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| 4 | ·7c9eb62c97f6a520fdddf7e40917266f·7333612·debug·optional·erlang-base-dbgsym_27.3+dfsg-1_armhf.deb | 4 | ·7c9eb62c97f6a520fdddf7e40917266f·7333612·debug·optional·erlang-base-dbgsym_27.3+dfsg-1_armhf.deb |
| 5 | ·4e282a5d1f4fd6e3bb0488f0e290f34f·10856816·interpreters·optional·erlang-base_27.3+dfsg-1_armhf.deb | 5 | ·4e282a5d1f4fd6e3bb0488f0e290f34f·10856816·interpreters·optional·erlang-base_27.3+dfsg-1_armhf.deb |
| 6 | ·0c6e2d6681e11ac98d6d132c4a098ce5·41956·debug·optional·erlang-common-test-dbgsym_27.3+dfsg-1_armhf.deb | 6 | ·0c6e2d6681e11ac98d6d132c4a098ce5·41956·debug·optional·erlang-common-test-dbgsym_27.3+dfsg-1_armhf.deb |
| 7 | ·8652a9f8d693ac1953cfe0edfd44e9b3·1312028·interpreters·optional·erlang-common-test_27.3+dfsg-1_armhf.deb | 7 | ·8652a9f8d693ac1953cfe0edfd44e9b3·1312028·interpreters·optional·erlang-common-test_27.3+dfsg-1_armhf.deb |
| 8 | ·6a20434d1aac6b1764f422d0e41ef037·121024·debug·optional·erlang-crypto-dbgsym_27.3+dfsg-1_armhf.deb | 8 | ·6a20434d1aac6b1764f422d0e41ef037·121024·debug·optional·erlang-crypto-dbgsym_27.3+dfsg-1_armhf.deb |
| 9 | ·11bfb1eb0c9009e24f979d8278207f7b·175024·interpreters·optional·erlang-crypto_27.3+dfsg-1_armhf.deb | 9 | ·11bfb1eb0c9009e24f979d8278207f7b·175024·interpreters·optional·erlang-crypto_27.3+dfsg-1_armhf.deb |
| 10 | ·b1297d0c0a761a77fbf23788534b98b5·479380·interpreters·optional·erlang-debugger_27.3+dfsg-1_armhf.deb | 10 | ·b1297d0c0a761a77fbf23788534b98b5·479380·interpreters·optional·erlang-debugger_27.3+dfsg-1_armhf.deb |
| 11 | · | 11 | ·7660f5014ca54f8eed043b694664e158·287520·interpreters·optional·erlang-dev_27.3+dfsg-1_armhf.deb |
| 12 | ·4ef4bc4862151fd2b899fdc18b7ce284·80052·debug·optional·erlang-dialyzer-dbgsym_27.3+dfsg-1_armhf.deb | 12 | ·4ef4bc4862151fd2b899fdc18b7ce284·80052·debug·optional·erlang-dialyzer-dbgsym_27.3+dfsg-1_armhf.deb |
| 13 | ·e5797ac5dd7e6f8f8ba16021afb33e58·1073240·interpreters·optional·erlang-dialyzer_27.3+dfsg-1_armhf.deb | 13 | ·e5797ac5dd7e6f8f8ba16021afb33e58·1073240·interpreters·optional·erlang-dialyzer_27.3+dfsg-1_armhf.deb |
| 14 | ·84dc1384c04c62fcfce6359acbbaf857·811972·interpreters·optional·erlang-diameter_27.3+dfsg-1_armhf.deb | 14 | ·84dc1384c04c62fcfce6359acbbaf857·811972·interpreters·optional·erlang-diameter_27.3+dfsg-1_armhf.deb |
| 15 | · | 15 | ·695e170cc24e91c51c9ca606947162d9·16771056·doc·optional·erlang-doc_27.3+dfsg-1_all.deb |
| 16 | ·099362485364a5511309890261c565b5·459444·interpreters·optional·erlang-edoc_27.3+dfsg-1_armhf.deb | 16 | ·099362485364a5511309890261c565b5·459444·interpreters·optional·erlang-edoc_27.3+dfsg-1_armhf.deb |
| 17 | ·35cdd30711ad50c777c8d007f343d4b8·137960·interpreters·optional·erlang-eldap_27.3+dfsg-1_armhf.deb | 17 | ·35cdd30711ad50c777c8d007f343d4b8·137960·interpreters·optional·erlang-eldap_27.3+dfsg-1_armhf.deb |
| 18 | ·861bfb6859cbc3c88110412e5355c693·185092·interpreters·optional·erlang-et_27.3+dfsg-1_armhf.deb | 18 | ·861bfb6859cbc3c88110412e5355c693·185092·interpreters·optional·erlang-et_27.3+dfsg-1_armhf.deb |
| 19 | ·e2ebc333589ba5ee72273be4853dcd2c·171720·interpreters·optional·erlang-eunit_27.3+dfsg-1_armhf.deb | 19 | ·e2ebc333589ba5ee72273be4853dcd2c·171720·interpreters·optional·erlang-eunit_27.3+dfsg-1_armhf.deb |
| 20 | ·694c6cfd6ab14d118e07c13376a09da4·963164·interpreters·optional·erlang-examples_27.3+dfsg-1_all.deb | 20 | ·694c6cfd6ab14d118e07c13376a09da4·963164·interpreters·optional·erlang-examples_27.3+dfsg-1_all.deb |
| 21 | ·cbe7f4ba3094b7aa1b6e47c7140ac5eb·106212·interpreters·optional·erlang-ftp_27.3+dfsg-1_armhf.deb | 21 | ·cbe7f4ba3094b7aa1b6e47c7140ac5eb·106212·interpreters·optional·erlang-ftp_27.3+dfsg-1_armhf.deb |
| 22 | ·ee8d4211beabf5c31117e7e2c47f1b0e·671124·interpreters·optional·erlang-inets_27.3+dfsg-1_armhf.deb | 22 | ·ee8d4211beabf5c31117e7e2c47f1b0e·671124·interpreters·optional·erlang-inets_27.3+dfsg-1_armhf.deb |
| 23 | · | 23 | ·634a70b75710db00767e2c1f17e53e22·113520·interpreters·optional·erlang-jinterface_27.3+dfsg-1_all.deb |
| 24 | ·c636890f8ccde47ba622ac2cea35073b·64612·debug·optional·erlang-megaco-dbgsym_27.3+dfsg-1_armhf.deb | 24 | ·c636890f8ccde47ba622ac2cea35073b·64612·debug·optional·erlang-megaco-dbgsym_27.3+dfsg-1_armhf.deb |
| 25 | ·ea30e1063c34c3a72a97e65bbc483d4b·3687324·interpreters·optional·erlang-megaco_27.3+dfsg-1_armhf.deb | 25 | ·ea30e1063c34c3a72a97e65bbc483d4b·3687324·interpreters·optional·erlang-megaco_27.3+dfsg-1_armhf.deb |
| 26 | ·9f1f8c350558457d1cf4839296838a40·897864·interpreters·optional·erlang-mnesia_27.3+dfsg-1_armhf.deb | 26 | ·9f1f8c350558457d1cf4839296838a40·897864·interpreters·optional·erlang-mnesia_27.3+dfsg-1_armhf.deb |
| 27 | ·ad03e798bf84ebdd2a7c760ac06b864a·93160·interpreters·optional·erlang-mode_27.3+dfsg-1_all.deb | 27 | ·ad03e798bf84ebdd2a7c760ac06b864a·93160·interpreters·optional·erlang-mode_27.3+dfsg-1_all.deb |
| 28 | ·c9ae41019dbc217a22f727159561d6c3·14812·interpreters·optional·erlang-nox_27.3+dfsg-1_all.deb | 28 | ·c9ae41019dbc217a22f727159561d6c3·14812·interpreters·optional·erlang-nox_27.3+dfsg-1_all.deb |
| 29 | ·d799980c6345ed434f14895744ff4c7e·1028148·interpreters·optional·erlang-observer_27.3+dfsg-1_armhf.deb | 29 | ·d799980c6345ed434f14895744ff4c7e·1028148·interpreters·optional·erlang-observer_27.3+dfsg-1_armhf.deb |
| 30 | ·7650e14d0e6aea9a1d6a8345214ef6e9·59872·debug·optional·erlang-odbc-dbgsym_27.3+dfsg-1_armhf.deb | 30 | ·7650e14d0e6aea9a1d6a8345214ef6e9·59872·debug·optional·erlang-odbc-dbgsym_27.3+dfsg-1_armhf.deb |
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| 34 | ·198ddb91a3cec787c9d64b77498e22ac·211268·interpreters·optional·erlang-parsetools_27.3+dfsg-1_armhf.deb | 34 | ·198ddb91a3cec787c9d64b77498e22ac·211268·interpreters·optional·erlang-parsetools_27.3+dfsg-1_armhf.deb |
| 35 | ·32779e56cc38370bad52d3d814a1a683·784184·interpreters·optional·erlang-public-key_27.3+dfsg-1_armhf.deb | 35 | ·32779e56cc38370bad52d3d814a1a683·784184·interpreters·optional·erlang-public-key_27.3+dfsg-1_armhf.deb |
| 36 | ·3ca1424d3e44c1d9114d49df18acd4be·384464·interpreters·optional·erlang-reltool_27.3+dfsg-1_armhf.deb | 36 | ·3ca1424d3e44c1d9114d49df18acd4be·384464·interpreters·optional·erlang-reltool_27.3+dfsg-1_armhf.deb |
| 37 | ·4903349ae4a9f08eac524cb1e4babeb9·25404·debug·optional·erlang-runtime-tools-dbgsym_27.3+dfsg-1_armhf.deb | 37 | ·4903349ae4a9f08eac524cb1e4babeb9·25404·debug·optional·erlang-runtime-tools-dbgsym_27.3+dfsg-1_armhf.deb |
| 38 | ·767bb409a3c7f808bff9f44c2d97903a·243296·interpreters·optional·erlang-runtime-tools_27.3+dfsg-1_armhf.deb | 38 | ·767bb409a3c7f808bff9f44c2d97903a·243296·interpreters·optional·erlang-runtime-tools_27.3+dfsg-1_armhf.deb |
| 39 | ·ac69e4542c389ab5bf9ba9dd7bff6236·1949760·interpreters·optional·erlang-snmp_27.3+dfsg-1_armhf.deb | 39 | ·ac69e4542c389ab5bf9ba9dd7bff6236·1949760·interpreters·optional·erlang-snmp_27.3+dfsg-1_armhf.deb |
| 40 | ·74c327e68c0435308e4fc78e18fdb71f·6105860·interpreters·optional·erlang-src_27.3+dfsg-1_all.deb | 40 | ·74c327e68c0435308e4fc78e18fdb71f·6105860·interpreters·optional·erlang-src_27.3+dfsg-1_all.deb |
| 41 | · | 41 | ·dea67b295337eb129920250b540bb017·1008828·interpreters·optional·erlang-ssh_27.3+dfsg-1_armhf.deb |
| 42 | ·ed36cf6e3f824be9940a4fd92a1370e7·1810092·interpreters·optional·erlang-ssl_27.3+dfsg-1_armhf.deb | 42 | ·ed36cf6e3f824be9940a4fd92a1370e7·1810092·interpreters·optional·erlang-ssl_27.3+dfsg-1_armhf.deb |
| 43 | ·69669f1dbaec6571c3d54fb517ff76d3·338648·interpreters·optional·erlang-syntax-tools_27.3+dfsg-1_armhf.deb | 43 | ·69669f1dbaec6571c3d54fb517ff76d3·338648·interpreters·optional·erlang-syntax-tools_27.3+dfsg-1_armhf.deb |
| 44 | ·c62a686dfc94a95c20e20999d4d6ec75·113192·interpreters·optional·erlang-tftp_27.3+dfsg-1_armhf.deb | 44 | ·c62a686dfc94a95c20e20999d4d6ec75·113192·interpreters·optional·erlang-tftp_27.3+dfsg-1_armhf.deb |
| 45 | ·0a3ceb77db1abe9986b86d65a1945304·622396·interpreters·optional·erlang-tools_27.3+dfsg-1_armhf.deb | 45 | ·0a3ceb77db1abe9986b86d65a1945304·622396·interpreters·optional·erlang-tools_27.3+dfsg-1_armhf.deb |
| 46 | ·aa0884fdd1fc459eac5489df6448a303·5184188·debug·optional·erlang-wx-dbgsym_27.3+dfsg-1_armhf.deb | 46 | ·aa0884fdd1fc459eac5489df6448a303·5184188·debug·optional·erlang-wx-dbgsym_27.3+dfsg-1_armhf.deb |
| 47 | ·41634b4a9ff87646d5822040d30843bc·4437472·interpreters·optional·erlang-wx_27.3+dfsg-1_armhf.deb | 47 | ·41634b4a9ff87646d5822040d30843bc·4437472·interpreters·optional·erlang-wx_27.3+dfsg-1_armhf.deb |
| 48 | ·f50f75245c3b5bee0d0f5a867712f707·14768·interpreters·optional·erlang-x11_27.3+dfsg-1_all.deb | 48 | ·f50f75245c3b5bee0d0f5a867712f707·14768·interpreters·optional·erlang-x11_27.3+dfsg-1_all.deb |
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| 2 | -rw-r--r--···0········0········0·····3648·2025-03-11·08:30:48.000000·control.tar.xz | 2 | -rw-r--r--···0········0········0·····3648·2025-03-11·08:30:48.000000·control.tar.xz |
| 3 | -rw-r--r--···0········0········0···283 | 3 | -rw-r--r--···0········0········0···283680·2025-03-11·08:30:48.000000·data.tar.xz |
| Offset 7, 308 lines modified | Offset 7, 308 lines modified | ||
| 7 | -define(VERSION,·"1:27.3+dfsg"). | 7 | -define(VERSION,·"1:27.3+dfsg"). |
| 8 | -define(ABI_VERSION,·"17.0"). | 8 | -define(ABI_VERSION,·"17.0"). |
| 9 | -define(PCRE_VERSION,·"8.44"). | 9 | -define(PCRE_VERSION,·"8.44"). |
| 10 | %·Since·all·packages·required·built·application·to·run·may·be·unavailable | 10 | %·Since·all·packages·required·built·application·to·run·may·be·unavailable |
| 11 | %·on·build·stage·it's·necessary·to·list·all·module-package·relationships | 11 | %·on·build·stage·it's·necessary·to·list·all·module-package·relationships |
| 12 | %·explicitly: | 12 | %·explicitly: |
| 13 | -define(MODULES,·[{" | 13 | -define(MODULES,·[{"ets",·"erlang-base"}, |
| 14 | {"release_handler_1",·"erlang-base"}, | ||
| 15 | {"sasl_report_file_h",·"erlang-base"}, | ||
| 16 | {"release_handler",·"erlang-base"}, | ||
| 17 | {"systools_rc",·"erlang-base"}, | ||
| 18 | {"sasl_report",·"erlang-base"}, | ||
| 19 | {"alarm_handler",·"erlang-base"}, | ||
| 20 | {"misc_supp",·"erlang-base"}, | ||
| 21 | {"rb",·"erlang-base"}, | ||
| 22 | {"rb_format_supp",·"erlang-base"}, | ||
| 23 | {"systools",·"erlang-base"}, | ||
| 24 | {"sasl",·"erlang-base"}, | ||
| 25 | {"systools_lib",·"erlang-base"}, | ||
| 26 | {"format_lib_supp",·"erlang-base"}, | ||
| 27 | {"systools_make",·"erlang-base"}, | ||
| 28 | {"sasl_report_tty_h",·"erlang-base"}, | ||
| 29 | {"erlsrv",·"erlang-base"}, | ||
| 30 | {"target_system",·"erlang-base"}, | ||
| 31 | {"application_starter",·"erlang-base"}, | ||
| 32 | {"raw_file_io",·"erlang-base"}, | ||
| 33 | {"code_server",·"erlang-base"}, | ||
| 34 | {"logger_handler",·"erlang-base"}, | ||
| 35 | {"logger_proxy",·"erlang-base"}, | ||
| 36 | {"user_sup",·"erlang-base"}, | ||
| 37 | {"file",·"erlang-base"}, | ||
| 38 | {"kernel_config",·"erlang-base"}, | ||
| 39 | {"ram_file",·"erlang-base"}, | ||
| 40 | {"pg2",·"erlang-base"}, | ||
| 41 | {"logger_olp",·"erlang-base"}, | ||
| 42 | {"disk_log_1",·"erlang-base"}, | ||
| 43 | {"raw_file_io_delayed",·"erlang-base"}, | ||
| 44 | {"inet_config",·"erlang-base"}, | ||
| 45 | {" | 14 | {"math",·"erlang-base"}, |
| 46 | {"logger_std_h",·"erlang-base"}, | ||
| 47 | {"dist_ac",·"erlang-base"}, | ||
| 48 | {"raw_file_io_compressed",·"erlang-base"}, | ||
| 49 | {"local_tcp",·"erlang-base"}, | ||
| 50 | {"inet_parse",·"erlang-base"}, | ||
| 51 | {"inet_dns_tsig",·"erlang-base"}, | ||
| 52 | {"prim_tty",·"erlang-base"}, | ||
| 53 | {"erts_debug",·"erlang-base"}, | ||
| 54 | {"rpc",·"erlang-base"}, | ||
| 55 | {"erl_signal_handler",·"erlang-base"}, | ||
| 56 | {"gen_udp",·"erlang-base"}, | ||
| 57 | {"inet_db",·"erlang-base"}, | ||
| 58 | {"dist_util",·"erlang-base"}, | ||
| 59 | {"kernel_refc",·"erlang-base"}, | ||
| 60 | {"socket",·"erlang-base"}, | ||
| 61 | {"disk_log_sup",·"erlang-base"}, | ||
| 62 | {"inet6_tcp",·"erlang-base"}, | ||
| 63 | {"error_logger",·"erlang-base"}, | ||
| 64 | {"erl_compile_server",·"erlang-base"}, | ||
| 65 | {"logger_filters",·"erlang-base"}, | ||
| 66 | {"gen_tcp",·"erlang-base"}, | ||
| 67 | {"inet6_udp",·"erlang-base"}, | ||
| 68 | {"raw_file_io_deflate",·"erlang-base"}, | ||
| 69 | {"trace",·"erlang-base"}, | ||
| 70 | {"logger_h_common",·"erlang-base"}, | ||
| 71 | {"group",·"erlang-base"}, | ||
| 72 | {"erl_kernel_errors",·"erlang-base"}, | ||
| 73 | {"group_history",·"erlang-base"}, | ||
| 74 | {"inet_sctp",·"erlang-base"}, | ||
| 75 | {"erl_erts_errors",·"erlang-base"}, | ||
| 76 | {"standard_error",·"erlang-base"}, | ||
| 77 | {"logger_simple_h",·"erlang-base"}, | ||
| 78 | {"inet6_tcp_dist",·"erlang-base"}, | ||
| 79 | {"inet_udp",·"erlang-base"}, | ||
| 80 | {"inet",·"erlang-base"}, | ||
| 81 | {"erl_ddll",·"erlang-base"}, | ||
| 82 | {"logger_sup",·"erlang-base"}, | ||
| 83 | {"logger_formatter",·"erlang-base"}, | ||
| 84 | {" | 15 | {"slave",·"erlang-base"}, |
| 85 | {"logger_config",·"erlang-base"}, | ||
| 86 | {"erl_epmd",·"erlang-base"}, | ||
| 87 | {"inet_tcp_dist",·"erlang-base"}, | ||
| 88 | {"inet6_sctp",·"erlang-base"}, | ||
| 89 | {"disk_log",·"erlang-base"}, | ||
| 90 | {"inet_epmd_dist",·"erlang-base"}, | ||
| 91 | {"inet_gethost_native",·"erlang-base"}, | ||
| 92 | {"inet_tcp",·"erlang-base"}, | ||
| 93 | {"pg",·"erlang-base"}, | ||
| 94 | {"logger_handler_watcher",·"erlang-base"}, | ||
| 95 | {"logger_backend",·"erlang-base"}, | ||
| 96 | {"code",·"erlang-base"}, | ||
| 97 | {"user_drv",·"erlang-base"}, | ||
| 98 | {"net",·"erlang-base"}, | ||
| 99 | {"error_handler",·"erlang-base"}, | ||
| 100 | {"inet_res",·"erlang-base"}, | ||
| 101 | {"heart",·"erlang-base"}, | ||
| 102 | {"erl_reply",·"erlang-base"}, | ||
| 103 | {"net_adm",·"erlang-base"}, | ||
| 104 | {"net_kernel",·"erlang-base"}, | ||
| 105 | {"raw_file_io_list",·"erlang-base"}, | ||
| 106 | {"raw_file_io_inflate",·"erlang-base"}, | ||
| 107 | {"global_search",·"erlang-base"}, | ||
| 108 | {"erpc",·"erlang-base"}, | ||
| 109 | {"inet_hosts",·"erlang-base"}, | ||
| 110 | {"local_udp",·"erlang-base"}, | ||
| 111 | {"logger_server",·"erlang-base"}, | ||
| 112 | {"file_io_server",·"erlang-base"}, | ||
| 113 | {"inet_dns",·"erlang-base"}, | ||
| 114 | {"application_master",·"erlang-base"}, | ||
| 115 | {"kernel",·"erlang-base"}, | ||
| 116 | {"wrap_log_reader",·"erlang-base"}, | ||
| 117 | {"gen_tcp_socket",·"erlang-base"}, | ||
| 118 | {"application_controller",·"erlang-base"}, | ||
| 119 | {"erl_distribution",·"erlang-base"}, | ||
| 120 | {"global",·"erlang-base"}, | ||
| 121 | {"erl_boot_server",·"erlang-base"}, | ||
| 122 | {"gen_sctp",·"erlang-base"}, | ||
| 123 | {"file_server",·"erlang-base"}, | ||
| 124 | {"logger_disk_log_h",·"erlang-base"}, | ||
| 125 | {"seq_trace",·"erlang-base"}, | ||
| 126 | {"logger",·"erlang-base"}, | ||
| 127 | {"global_group",·"erlang-base"}, | ||
| 128 | {"gen_udp_socket",·"erlang-base"}, | ||
| 129 | {"application",·"erlang-base"}, | ||
| 130 | {"disk_log_server",·"erlang-base"}, | ||
| 131 | {"inet_epmd_socket",·"erlang-base"}, | ||
| 132 | {"win32reg",·"erlang-base"}, | ||
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| 2 | -rw-r--r--···0········0········0····395 | 2 | -rw-r--r--···0········0········0····39560·2025-03-11·08:30:48.000000·control.tar.xz |
| 3 | -rw-r--r--···0········0········0·167 | 3 | -rw-r--r--···0········0········0·16731304·2025-03-11·08:30:48.000000·data.tar.xz |
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| 38 | dist/sidebar_items-E71B297A.js | 38 | dist/sidebar_items-E71B297A.js |
| 39 | edoc.html | 39 | edoc.html |
| 40 | edoc.html | 40 | edoc.html |
| 41 | efficiency_guide.html | 41 | efficiency_guide.html |
| 42 | efficiency_guide.html | 42 | efficiency_guide.html |
| 43 | eldap.html | 43 | eldap.html |
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| 108 | <div·id="search"> | 108 | <div·id="search"> |
| 109 | ··<h1> | 109 | ··<h1> |
| 110 | ····<span></span> | 110 | ····<span></span> |
| 111 | ··</h1> | 111 | ··</h1> |
| 112 | ··<div·class="loading"><div></div><div></div><div></div><div></div></div> | 112 | ··<div·class="loading"><div></div><div></div><div></div><div></div></div> |
| 113 | </div> | 113 | </div> |
| 114 | <script·src="dist/search_data- | 114 | <script·src="dist/search_data-A8289C95.js"></script> |
| 115 | ····<footer·class="footer"> | 115 | ····<footer·class="footer"> |
| 116 | ······<p> | 116 | ······<p> |
| 117 | ········<span·class="line"> | 117 | ········<span·class="line"> |
| 118 | ··········<button·class="a-main·footer-button·display-quick-switch"·title="Search·HexDocs·packages"> | 118 | ··········<button·class="a-main·footer-button·display-quick-switch"·title="Search·HexDocs·packages"> |
| 119 | ············Search·HexDocs | 119 | ············Search·HexDocs |
| 120 | ··········</button> | 120 | ··········</button> |
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| 1 | Zip·archive·data,·made·by·v6.1·UNIX,·extract·using·at·least·v1.0,·last·modified,·last·modified·Sun,·Mar·18·2025·0 | 1 | Zip·archive·data,·made·by·v6.1·UNIX,·extract·using·at·least·v1.0,·last·modified,·last·modified·Sun,·Mar·18·2025·08:53:20,·uncompressed·size·20,·method=store |
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| 30 | (grow·and·shrink·dynamically)·with·small·memory·footprint,·fast·to·create·and | 30 | (grow·and·shrink·dynamically)·with·small·memory·footprint,·fast·to·create·and |
| 31 | terminate,·and·the·scheduling·overhead·is·low.</p><h2·id="process-creation"·class="section-heading"> | 31 | terminate,·and·the·scheduling·overhead·is·low.</p><h2·id="process-creation"·class="section-heading"> |
| 32 | ··<a·href="#process-creation"·class="hover-link"> | 32 | ··<a·href="#process-creation"·class="hover-link"> |
| 33 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 33 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 34 | ··</a> | 34 | ··</a> |
| 35 | ··<span·class="text">Process·Creation</span> | 35 | ··<span·class="text">Process·Creation</span> |
| 36 | </h2> | 36 | </h2> |
| 37 | <p>A·process·is·created·by·calling·<a·href="../../../lib/../erts/doc/html/erlang.html#spawn/3"><code·class="inline">spawn()</code></a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">spawn</span><span·class="p"·data-group-id=" | 37 | <p>A·process·is·created·by·calling·<a·href="../../../lib/../erts/doc/html/erlang.html#spawn/3"><code·class="inline">spawn()</code></a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">spawn</span><span·class="p"·data-group-id="6347080233-1">(</span><span·class="n">Module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Args</span><span·class="p"·data-group-id="6347080233-1">)</span><s[·...·truncated·by·diffoscope;·len:·195,·SHA:·efe252205d07188a9cab7a12d3be19fa6e2e26ec971a38b4fa80cc5d95e3e9b2·...·]-2">)</span><span·class="w"> |
| 38 | ··</span><span·class="n">Module</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id=" | 38 | ··</span><span·class="n">Module</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="6347080233-3">(</span><span·class="p"·data-group-id="6347080233-3">)</span><span·class="w"> |
| 39 | ··</span><span·class="n">Args</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 39 | ··</span><span·class="n">Args</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6347080233-4">[</span><span·class="n">Arg1</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">,</span><span·class="n">ArgN</span><span·class="p"·data-group-id="6347080233-4">]</span><span·class="w"> |
| 40 | ····</span><span·class="n">ArgI</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id=" | 40 | ····</span><span·class="n">ArgI</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id="6347080233-5">(</span><span·class="p"·data-group-id="6347080233-5">)</span></code></pre><p><code·class="inline">spawn()</code>·creates·a·new·process·and·returns·the·pid.</p><p>The·new·process·starts·executing·in·<code·class="inline">Module:Name(Arg1,...,ArgN)</code>·where·the |
| 41 | arguments·are·the·elements·of·the·(possible·empty)·<code·class="inline">Args</code>·argument·list.</p><p>There·exist·a·number·of·different·<code·class="inline">spawn</code>·BIFs:</p><ul><li><a·href="../../../lib/../erts/doc/html/erlang.html#spawn/4"><code·class="inline">spawn/1,2,3,4</code></a></li><li><a·href="../../../lib/../erts/doc/html/erlang.html#spawn_link/4"><code·class="inline">spawn_link/1,2,3,4</code></a></li><li><a·href="../../../lib/../erts/doc/html/erlang.html#spawn_monitor/4"><code·class="inline">spawn_monitor/1,2,3,4</code></a></li><li><a·href="../../../lib/../erts/doc/html/erlang.html#spawn_opt/5"><code·class="inline">spawn_opt/2,3,4,5</code></a></li><li><a·href="../../../lib/../erts/doc/html/erlang.html#spawn_request/5"><code·class="inline">spawn_request/1,2,3,4,5</code></a></li></ul><h2·id="registered-processes"·class="section-heading"> | 41 | arguments·are·the·elements·of·the·(possible·empty)·<code·class="inline">Args</code>·argument·list.</p><p>There·exist·a·number·of·different·<code·class="inline">spawn</code>·BIFs:</p><ul><li><a·href="../../../lib/../erts/doc/html/erlang.html#spawn/4"><code·class="inline">spawn/1,2,3,4</code></a></li><li><a·href="../../../lib/../erts/doc/html/erlang.html#spawn_link/4"><code·class="inline">spawn_link/1,2,3,4</code></a></li><li><a·href="../../../lib/../erts/doc/html/erlang.html#spawn_monitor/4"><code·class="inline">spawn_monitor/1,2,3,4</code></a></li><li><a·href="../../../lib/../erts/doc/html/erlang.html#spawn_opt/5"><code·class="inline">spawn_opt/2,3,4,5</code></a></li><li><a·href="../../../lib/../erts/doc/html/erlang.html#spawn_request/5"><code·class="inline">spawn_request/1,2,3,4,5</code></a></li></ul><h2·id="registered-processes"·class="section-heading"> |
| 42 | ··<a·href="#registered-processes"·class="hover-link"> | 42 | ··<a·href="#registered-processes"·class="hover-link"> |
| 43 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 43 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 44 | ··</a> | 44 | ··</a> |
| 45 | ··<span·class="text">Registered·Processes</span> | 45 | ··<span·class="text">Registered·Processes</span> |
| 46 | </h2> | 46 | </h2> |
| 47 | <p>Besides·addressing·a·process·by·using·its·pid,·there·are·also·BIFs·for | 47 | <p>Besides·addressing·a·process·by·using·its·pid,·there·are·also·BIFs·for |
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| 33 | succeeds,·any·unbound·variables·in·the·pattern·become·bound.·If·the·matching | 33 | succeeds,·any·unbound·variables·in·the·pattern·become·bound.·If·the·matching |
| 34 | fails,·an·exception·is·raised.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">X</span><span·class="p">.</span><span·class="w"> | 34 | fails,·an·exception·is·raised.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">X</span><span·class="p">.</span><span·class="w"> |
| 35 | </span><span·class="gt">**·1:1:·variable·'X'·is·unbound·**</span><span·class="gp·unselectable"> | 35 | </span><span·class="gt">**·1:1:·variable·'X'·is·unbound·**</span><span·class="gp·unselectable"> |
| 36 | 2>·</span><span·class="n">X</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">2</span><span·class="p">.</span><span·class="w"> | 36 | 2>·</span><span·class="n">X</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">2</span><span·class="p">.</span><span·class="w"> |
| 37 | </span><span·class="mi">2</span><span·class="gp·unselectable"> | 37 | </span><span·class="mi">2</span><span·class="gp·unselectable"> |
| 38 | 3>·</span><span·class="n">X</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">.</span><span·class="w"> | 38 | 3>·</span><span·class="n">X</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">.</span><span·class="w"> |
| 39 | </span><span·class="mi">3</span><span·class="gp·unselectable"> | 39 | </span><span·class="mi">3</span><span·class="gp·unselectable"> |
| 40 | 4>·</span><span·class="p"·data-group-id=" | 40 | 4>·</span><span·class="p"·data-group-id="1620305296-1">{</span><span·class="n">X</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Y</span><span·class="p"·data-group-id="1620305296-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="[·...·truncated·by·diffoscope;·len:·179,·SHA:·b4d2f082fec80d55451e3d22a781943efc6fed436c567c1ee2c5deb1d49940d7·...·]-2">}</span><span·class="p">.</span><span·class="w"> |
| 41 | </span><span·class="gt">**·exception·error:·no·match·of·right·hand·side·value·{1,2}</span><span·class="gp·unselectable"> | 41 | </span><span·class="gt">**·exception·error:·no·match·of·right·hand·side·value·{1,2}</span><span·class="gp·unselectable"> |
| 42 | 5>·</span><span·class="p"·data-group-id=" | 42 | 5>·</span><span·class="p"·data-group-id="1620305296-3">{</span><span·class="n">X</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Y</span><span·class="p"·data-group-id="1620305296-3">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="[·...·truncated·by·diffoscope;·len:·179,·SHA:·68dd6a7d7d686435829cb0bcfbe739cfacea811d77322b6b078093add4f1a2eb·...·]-4">}</span><span·class="p">.</span><span·class="w"> |
| 43 | </span><span·class="p"·data-group-id=" | 43 | </span><span·class="p"·data-group-id="1620305296-5">{</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="1620305296-5">}</span><span·class="gp·unselectable"> |
| 44 | 6>·</span><span·class="n">Y</span><span·class="p">.</span><span·class="w"> | 44 | 6>·</span><span·class="n">Y</span><span·class="p">.</span><span·class="w"> |
| 45 | </span><span·class="mi">3</span></code></pre> | 45 | </span><span·class="mi">3</span></code></pre> |
| 46 | ··</body> | 46 | ··</body> |
| 47 | </html> | 47 | </html> |
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| 106 | ··</a> | 106 | ··</a> |
| 107 | ··<span·class="text">Sanity·check</span> | 107 | ··<span·class="text">Sanity·check</span> |
| 108 | </h2> | 108 | </h2> |
| 109 | <p>The·application·dependencies·can·be·checked·using·the·Erlang·shell. | 109 | <p>The·application·dependencies·can·be·checked·using·the·Erlang·shell. |
| 110 | Application·dependencies·are·verified·among·installed·applications·by | 110 | Application·dependencies·are·verified·among·installed·applications·by |
| 111 | <code·class="inline">otp_patch_apply</code>,·but·these·are·not·necessarily·those·actually·loaded. | 111 | <code·class="inline">otp_patch_apply</code>,·but·these·are·not·necessarily·those·actually·loaded. |
| 112 | By·calling·<code·class="inline">system_information:sanity_check()</code>·one·can·validate | 112 | By·calling·<code·class="inline">system_information:sanity_check()</code>·one·can·validate |
| 113 | dependencies·among·applications·actually·loaded.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">system_information</span><span·class="p">:</span><span·class="nf">sanity_check</span><span·class="p"·data-group-id=" | 113 | dependencies·among·applications·actually·loaded.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">system_information</span><span·class="p">:</span><span·class="nf">sanity_check</span><span·class="p"·data-group-id="4755004406-1">(</span><span·class="p"·data-group-id="4755004406-1">)</span><span·class="p">.</span><span·class="w"> |
| 114 | </span><span·class="ss">ok</span></code></pre><p>Please·take·a·look·at·the·reference·of·<a·href="../../../lib/runtime_tools/doc/html/system_information.html#sanity_check/0"·title="">sanity_check()</a>·for·more | 114 | </span><span·class="ss">ok</span></code></pre><p>Please·take·a·look·at·the·reference·of·<a·href="../../../lib/runtime_tools/doc/html/system_information.html#sanity_check/0"·title="">sanity_check()</a>·for·more |
| 115 | information.</p> | 115 | information.</p> |
| 116 | ··</body> | 116 | ··</body> |
| 117 | </html> | 117 | </html> |
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| 27 | ··<span·class="text">Opaque·Type·Aliases</span> | 27 | ··<span·class="text">Opaque·Type·Aliases</span> |
| 28 | </h2> | 28 | </h2> |
| 29 | <p>The·main·use·case·for·opacity·in·Erlang·is·to·hide·the·implementation·of·a·data | 29 | <p>The·main·use·case·for·opacity·in·Erlang·is·to·hide·the·implementation·of·a·data |
| 30 | type,·enabling·evolving·the·API·while·minimizing·the·risk·of·breaking·consumers. | 30 | type,·enabling·evolving·the·API·while·minimizing·the·risk·of·breaking·consumers. |
| 31 | The·runtime·does·not·check·opacity.·Dialyzer·provides·some·opacity-checking,·but | 31 | The·runtime·does·not·check·opacity.·Dialyzer·provides·some·opacity-checking,·but |
| 32 | the·rest·is·up·to·convention.</p><p>This·document·explains·what·Erlang·opacity·is·(and·the·trade-offs·involved)·via | 32 | the·rest·is·up·to·convention.</p><p>This·document·explains·what·Erlang·opacity·is·(and·the·trade-offs·involved)·via |
| 33 | the·example·of·the·<a·href="../../../lib/stdlib/doc/html/sets.html#t:set/0"><code·class="inline">sets:set()</code></a>·data·type.·This·type·<em>was</em> | 33 | the·example·of·the·<a·href="../../../lib/stdlib/doc/html/sets.html#t:set/0"><code·class="inline">sets:set()</code></a>·data·type.·This·type·<em>was</em> |
| 34 | defined·in·the·<code·class="inline">sets</code>·module·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">opaque</span><span·class="w">·</span><span·class="nf">set</span><span·class="p"·data-group-id="8498072032-1">(</span><span·class="n">Element</span><span·class="p"·data-group-id="8498072032-1">)</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">set</span><span·class="p"·data-group-id="8498072032-2">{</span><span·class="ss">segs</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">segs</span><span·class="p"·data-group-id="8498072032-3">(</span><span·class="n">Element</span><span·class="p"·data-group-id="8498072032-3">)</span><span·class="p"·data-group-id="8498072032-2">}</span><span·class="p">.</span></code></pre><p>OTP·24·changed·the·definition·to·the·following·in | ||
| 35 | 34 | defined·in·the·<code·class="inline">sets</code>·module·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">opaque</span><span·class="w">·</span><span·class="nf">set</span><span·class="p"·data-group-id="401[·...·truncated·by·diffoscope;·len:·732,·SHA:·c5510cc585ca1921b90e7c931519a8a6a6be5ada339b749ddf984f39848d5b11·...·] | |
| 35 | <a·href="https://github.com/erlang/otp/commit/e66941e8d7c47b973dff94c0308ea85a6be1958e">this·commit</a>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">opaque</span><span·class="w">·</span><span·class="nf">set</span><span·class="p"·data-group-id="7669266588-1">(</span><span·class="n">Element</span><span·class="p"·data-group-id="7669266588-1">)</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">set</span><span·class="p"·data-group-id="7669266588-2">{</span><span·class="ss">segs</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">segs</span><span·class="p"·data-group-id="7669266588-3">(</span><span·class="n">Element</span><span·class="p"·data-group-id="7669266588-3">)</span><span·class="p"·data-group-id="7669266588-2">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="7669266588-4">#{</span><span·class="n">Element</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="o">?</span><span·class="n">VALUE</span><span·class="p"·data-group-id="7669266588-4">}</span><span·class="p">.</span></code></pre><p>And·this·change·was·safer·and·more·backwards-compatible·than·if·the·type·had | ||
| 36 | been·defined·with·<code·class="inline">-type</code>·instead·of·<code·class="inline">-opaque</code>.·Here·is·why:·when·a·module | 36 | been·defined·with·<code·class="inline">-type</code>·instead·of·<code·class="inline">-opaque</code>.·Here·is·why:·when·a·module |
| 37 | defines·an·<code·class="inline">-opaque</code>,·the·contract·is·that·only·the·defining·module·should·rely | 37 | defines·an·<code·class="inline">-opaque</code>,·the·contract·is·that·only·the·defining·module·should·rely |
| 38 | on·the·definition·of·the·type:·no·other·modules·should·rely·on·the·definition.</p><p>This·means·that·code·that·pattern-matched·on·<code·class="inline">set</code>·as·a·record/tuple·technically | 38 | on·the·definition·of·the·type:·no·other·modules·should·rely·on·the·definition.</p><p>This·means·that·code·that·pattern-matched·on·<code·class="inline">set</code>·as·a·record/tuple·technically |
| 39 | broke·the·contract,·and·opted·in·to·being·potentially·broken·when·the·definition | 39 | broke·the·contract,·and·opted·in·to·being·potentially·broken·when·the·definition |
| 40 | of·<code·class="inline">set()</code>·changed.·Before·OTP·24,·this·code·printed·<code·class="inline">ok</code>.·In·OTP·24·it·may | 40 | of·<code·class="inline">set()</code>·changed.·Before·OTP·24,·this·code·printed·<code·class="inline">ok</code>.·In·OTP·24·it·may |
| 41 | error:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">case</span><span·class="w">·</span><span·class="nc">sets</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id=" | 41 | error:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">case</span><span·class="w">·</span><span·class="nc">sets</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id="1899317605-1">(</span><span·class="p"·data-group-id="1899317605-1">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 42 | ····</span><span·class="n">Set</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_tuple</span><span·class="p"·data-group-id=" | 42 | ····</span><span·class="n">Set</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_tuple</span><span·class="p"·data-group-id="1899317605-2">(</span><span·class="n">Set</span><span·class="p"·data-group-id="1899317605-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 43 | ········</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 43 | ········</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="1899317605-3">(</span><span·class="s">"ok"</span><span·class="p"·data-group-id="1899317605-3">)</span><span·class="w"> |
| 44 | </span><span·class="k">end</span><span·class="p">.</span></code></pre><p><strong>When·working·with·an·opaque·defined·in·another·module,·here·are·some | 44 | </span><span·class="k">end</span><span·class="p">.</span></code></pre><p><strong>When·working·with·an·opaque·defined·in·another·module,·here·are·some |
| 45 | recommendations:</strong></p><ul><li>Don't·examine·the·underlying·type·using·pattern-matching,·guards,·or·functions | 45 | recommendations:</strong></p><ul><li>Don't·examine·the·underlying·type·using·pattern-matching,·guards,·or·functions |
| 46 | that·reveal·the·type,·such·as·<a·href="../../../lib/../erts/doc/html/erlang.html#tuple_size/1"><code·class="inline">tuple_size/1</code></a>·.</li><li>Instead,·use·functions·provided·by·the·module·for·working·with·the·type.·For | 46 | that·reveal·the·type,·such·as·<a·href="../../../lib/../erts/doc/html/erlang.html#tuple_size/1"><code·class="inline">tuple_size/1</code></a>·.</li><li>Instead,·use·functions·provided·by·the·module·for·working·with·the·type.·For |
| 47 | example,·<code·class="inline">sets</code>·module·provides·<a·href="../../../lib/stdlib/doc/html/sets.html#new/0"><code·class="inline">sets:new/0</code></a>,·<a·href="../../../lib/stdlib/doc/html/sets.html#add_element/2"><code·class="inline">sets:add_element/2</code></a>, | 47 | example,·<code·class="inline">sets</code>·module·provides·<a·href="../../../lib/stdlib/doc/html/sets.html#new/0"><code·class="inline">sets:new/0</code></a>,·<a·href="../../../lib/stdlib/doc/html/sets.html#add_element/2"><code·class="inline">sets:add_element/2</code></a>, |
| 48 | <a·href="../../../lib/stdlib/doc/html/sets.html#is_element/2"><code·class="inline">sets:is_element/2</code></a>,·and·so·on.</li><li><p><a·href="../../../lib/stdlib/doc/html/sets.html#t:set/1"><code·class="inline">sets:set(a)</code></a>·is·a·subtype·of·<code·class="inline">sets:set(a·|·b)</code>·and·not·the | 48 | <a·href="../../../lib/stdlib/doc/html/sets.html#is_element/2"><code·class="inline">sets:is_element/2</code></a>,·and·so·on.</li><li><p><a·href="../../../lib/stdlib/doc/html/sets.html#t:set/1"><code·class="inline">sets:set(a)</code></a>·is·a·subtype·of·<code·class="inline">sets:set(a·|·b)</code>·and·not·the |
| 49 | other·way·around.·Generally,·you·can·rely·on·the·property·that·<code·class="inline">the_opaque(T)</code> | 49 | other·way·around.·Generally,·you·can·rely·on·the·property·that·<code·class="inline">the_opaque(T)</code> |
| 50 | is·a·subtype·of·<code·class="inline">the_opaque(U)</code>·when·T·is·a·subtype·of·U.</p></li></ul><p><strong>When·defining·your·own·opaques,·here·are·some·recommendations:</strong></p><ul><li>Since·consumers·are·expected·to·not·rely·on·the·definition·of·the·opaque·type, | 50 | is·a·subtype·of·<code·class="inline">the_opaque(U)</code>·when·T·is·a·subtype·of·U.</p></li></ul><p><strong>When·defining·your·own·opaques,·here·are·some·recommendations:</strong></p><ul><li>Since·consumers·are·expected·to·not·rely·on·the·definition·of·the·opaque·type, |
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| 200 | </span><span·class="gp·unselectable">$·</span><span·class="">cd·erts/emulator | 200 | </span><span·class="gp·unselectable">$·</span><span·class="">cd·erts/emulator |
| 201 | </span><span·class="gp·unselectable">$·</span><span·class="">make·debug | 201 | </span><span·class="gp·unselectable">$·</span><span·class="">make·debug |
| 202 | </span><span·class="gp·unselectable">$·</span><span·class="">cd·../etc | 202 | </span><span·class="gp·unselectable">$·</span><span·class="">cd·../etc |
| 203 | </span><span·class="gp·unselectable">$·</span><span·class="">make·debug | 203 | </span><span·class="gp·unselectable">$·</span><span·class="">make·debug |
| 204 | </span></code></pre><p>and·sometimes</p><pre><code·class="makeup·shell"·translate="no"><span·class="gp·unselectable">$·</span><span·class="">cd·$ERL_TOP | 204 | </span></code></pre><p>and·sometimes</p><pre><code·class="makeup·shell"·translate="no"><span·class="gp·unselectable">$·</span><span·class="">cd·$ERL_TOP |
| 205 | </span><span·class="gp·unselectable">$·</span><span·class="">make·local_setup | 205 | </span><span·class="gp·unselectable">$·</span><span·class="">make·local_setup |
| 206 | </span></code></pre><p>So·now·when·you·run·<code·class="inline">$ERL_TOP/erl.exe</code>,·you·should·have·a·debug·compiled | 206 | </span></code></pre><p>So·now·when·you·run·<code·class="inline">$ERL_TOP/erl.exe</code>,·you·should·have·a·debug·compiled |
| 207 | emulator,·which·you·will·see·if·you·do·a:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">system_info</span><span·class="p"·data-group-id=" | 207 | emulator,·which·you·will·see·if·you·do·a:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">system_info</span><span·class="p"·data-group-id="4794999693-1">(</span><span·class="ss">system_version</span><span·class="p"·data-group-id="4794999693-1">)</span><span·class="p">.</span></code></pre><p>in·the·erlang·shell.·If·the·returned·string·contains·<code·class="inline">[debug]</code>,·you |
| 208 | got·a·debug·compiled·emulator.</p><p>To·hack·the·erlang·libraries,·you·simply·do·a·<code·class="inline">make·opt</code>·in·the | 208 | got·a·debug·compiled·emulator.</p><p>To·hack·the·erlang·libraries,·you·simply·do·a·<code·class="inline">make·opt</code>·in·the |
| 209 | specific·"applications"·directory,·like:</p><pre><code·class="makeup·shell"·translate="no"><span·class="gp·unselectable">$·</span><span·class="">cd·$ERL_TOP/lib/stdlib | 209 | specific·"applications"·directory,·like:</p><pre><code·class="makeup·shell"·translate="no"><span·class="gp·unselectable">$·</span><span·class="">cd·$ERL_TOP/lib/stdlib |
| 210 | </span><span·class="gp·unselectable">$·</span><span·class="">make·opt | 210 | </span><span·class="gp·unselectable">$·</span><span·class="">make·opt |
| 211 | </span></code></pre><p>or·even·in·the·source·directory...</p><pre><code·class="makeup·shell"·translate="no"><span·class="gp·unselectable">$·</span><span·class="">cd·$ERL_TOP/lib/stdlib/src | 211 | </span></code></pre><p>or·even·in·the·source·directory...</p><pre><code·class="makeup·shell"·translate="no"><span·class="gp·unselectable">$·</span><span·class="">cd·$ERL_TOP/lib/stdlib/src |
| 212 | </span><span·class="gp·unselectable">$·</span><span·class="">make·opt | 212 | </span><span·class="gp·unselectable">$·</span><span·class="">make·opt |
| 213 | </span></code></pre><p>Note·that·you're·expected·to·have·a·fresh·Erlang·in·your·path·when | 213 | </span></code></pre><p>Note·that·you're·expected·to·have·a·fresh·Erlang·in·your·path·when |
| 214 | doing·this,·preferably·the·plain·27·you·have·built·in·the·previous | 214 | doing·this,·preferably·the·plain·27·you·have·built·in·the·previous |
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| 223 | </span><span·class="">:$ERL_TOP/erts/etc/win32/wsl_tools:$ERL_TOP/bootstrap/bin:$PATH | 223 | </span><span·class="">:$ERL_TOP/erts/etc/win32/wsl_tools:$ERL_TOP/bootstrap/bin:$PATH |
| 224 | </span></code></pre><p>That·should·make·it·possible·to·rebuild·any·library·without·hassle...</p><p>If·you·want·to·copy·a·library·(an·application)·newly·built,·to·a | 224 | </span></code></pre><p>That·should·make·it·possible·to·rebuild·any·library·without·hassle...</p><p>If·you·want·to·copy·a·library·(an·application)·newly·built,·to·a |
| 225 | release·area,·you·do·like·with·the·emulator:</p><pre><code·class="makeup·shell"·translate="no"><span·class="gp·unselectable">$·</span><span·class="">cd·$ERL_TOP/lib/stdlib | 225 | release·area,·you·do·like·with·the·emulator:</p><pre><code·class="makeup·shell"·translate="no"><span·class="gp·unselectable">$·</span><span·class="">cd·$ERL_TOP/lib/stdlib |
| 226 | </span><span·class="gp·unselectable">$·</span><span·class="">make·TESTROOT=/tmp/erlang_release·release | 226 | </span><span·class="gp·unselectable">$·</span><span·class="">make·TESTROOT=/tmp/erlang_release·release |
| 227 | </span></code></pre><p>Remember·that:</p><ul><li><p>··Windows·specific·C-code·goes·in·the·<code·class="inline">$ERL_TOP/erts/emulator/sys/win32</code>, | 227 | </span></code></pre><p>Remember·that:</p><ul><li><p>··Windows·specific·C-code·goes·in·the·<code·class="inline">$ERL_TOP/erts/emulator/sys/win32</code>, |
| 228 | <code·class="inline">$ERL_TOP/erts/emulator/drivers/win32</code>·or·<code·class="inline">$ERL_TOP/erts/etc/win32</code>.</p></li><li><p>··Windows·specific·erlang·code·should·be·used·conditionally·and·the | 228 | <code·class="inline">$ERL_TOP/erts/emulator/drivers/win32</code>·or·<code·class="inline">$ERL_TOP/erts/etc/win32</code>.</p></li><li><p>··Windows·specific·erlang·code·should·be·used·conditionally·and·the |
| 229 | host·OS·tested·in·<em>runtime</em>,·the·exactly·same·beam·files·should·be | 229 | host·OS·tested·in·<em>runtime</em>,·the·exactly·same·beam·files·should·be |
| 230 | distributed·for·every·platform!·So·write·code·like:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">case</span><span·class="w">·</span><span·class="nc">os</span><span·class="p">:</span><span·class="nf">type</span><span·class="p"·data-group-id=" | 230 | distributed·for·every·platform!·So·write·code·like:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">case</span><span·class="w">·</span><span·class="nc">os</span><span·class="p">:</span><span·class="nf">type</span><span·class="p"·data-group-id="7964676181-1">(</span><span·class="p"·data-group-id="7964676181-1">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 231 | ····</span><span·class="p"·data-group-id=" | 231 | ····</span><span·class="p"·data-group-id="7964676181-2">{</span><span·class="ss">win32</span><span·class="p">,</span><span·class="p">_</span><span·class="p"·data-group-id="7964676181-2">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 232 | ········</span><span·class="nf">do_windows_specific</span><span·class="p"·data-group-id=" | 232 | ········</span><span·class="nf">do_windows_specific</span><span·class="p"·data-group-id="7964676181-3">(</span><span·class="p"·data-group-id="7964676181-3">)</span><span·class="p">;</span><span·class="w"> |
| 233 | ····</span><span·class="n">Other</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 233 | ····</span><span·class="n">Other</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 234 | ········</span><span·class="nf">do_fallback_or_exit</span><span·class="p"·data-group-id=" | 234 | ········</span><span·class="nf">do_fallback_or_exit</span><span·class="p"·data-group-id="7964676181-4">(</span><span·class="p"·data-group-id="7964676181-4">)</span><span·class="w"> |
| 235 | </span><span·class="k">end</span><span·class="p">,</span></code></pre></li></ul><p>That's·basically·all·you·need·to·get·going.</p><h2·id="frequently-asked-questions"·class="section-heading"> | 235 | </span><span·class="k">end</span><span·class="p">,</span></code></pre></li></ul><p>That's·basically·all·you·need·to·get·going.</p><h2·id="frequently-asked-questions"·class="section-heading"> |
| 236 | ··<a·href="#frequently-asked-questions"·class="hover-link"> | 236 | ··<a·href="#frequently-asked-questions"·class="hover-link"> |
| 237 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 237 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 238 | ··</a> | 238 | ··</a> |
| 239 | ··<span·class="text">Frequently·Asked·Questions</span> | 239 | ··<span·class="text">Frequently·Asked·Questions</span> |
| 240 | </h2> | 240 | </h2> |
| 241 | <ul><li><p>··Q:·So,·now·I·can·build·Erlang·using·GCC·on·Windows?</p><p>A:·No,·unfortunately·not.·You'll·need·Microsoft's·Visual·C++ | 241 | <ul><li><p>··Q:·So,·now·I·can·build·Erlang·using·GCC·on·Windows?</p><p>A:·No,·unfortunately·not.·You'll·need·Microsoft's·Visual·C++ |
| Offset 36, 14 lines modified | Offset 36, 14 lines modified | ||
| 36 | int·bar(int·y)·{ | 36 | int·bar(int·y)·{ |
| 37 | ··return·y*2; | 37 | ··return·y*2; |
| 38 | }</code></pre><p>The·functions·are·deliberately·kept·as·simple·as·possible,·for·readability | 38 | }</code></pre><p>The·functions·are·deliberately·kept·as·simple·as·possible,·for·readability |
| 39 | reasons.</p><p>From·an·Erlang·perspective,·it·is·preferable·to·be·able·to·call·<code·class="inline">foo</code>·and·<code·class="inline">bar</code> | 39 | reasons.</p><p>From·an·Erlang·perspective,·it·is·preferable·to·be·able·to·call·<code·class="inline">foo</code>·and·<code·class="inline">bar</code> |
| 40 | without·having·to·bother·about·that·they·are·C·functions:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·Erlang·code</span><span·class="w"> | 40 | without·having·to·bother·about·that·they·are·C·functions:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·Erlang·code</span><span·class="w"> |
| 41 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 41 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 42 | </span><span·class="n">Res</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">complex</span><span·class="p">:</span><span·class="nf">foo</span><span·class="p"·data-group-id=" | 42 | </span><span·class="n">Res</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">complex</span><span·class="p">:</span><span·class="nf">foo</span><span·class="p"·data-group-id="7643875362-1">(</span><span·class="n">X</span><span·class="p"·data-group-id="7643875362-1">)</span><span·class="p">,</span><span·class="w"> |
| 43 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>Here,·the·communication·with·C·is·hidden·in·the·implementation·of·<code·class="inline">complex.erl</code>. | 43 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>Here,·the·communication·with·C·is·hidden·in·the·implementation·of·<code·class="inline">complex.erl</code>. |
| 44 | In·the·following·sections,·it·is·shown·how·this·module·can·be·implemented·using | 44 | In·the·following·sections,·it·is·shown·how·this·module·can·be·implemented·using |
| 45 | the·different·interoperability·mechanisms.</p> | 45 | the·different·interoperability·mechanisms.</p> |
| 46 | ··</body> | 46 | ··</body> |
| 47 | </html> | 47 | </html> |
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| 56 | classes,·with·different·origins.·The·<a·href="expressions.xhtml#try">try</a>·expression·can | 56 | classes,·with·different·origins.·The·<a·href="expressions.xhtml#try">try</a>·expression·can |
| 57 | distinguish·between·the·different·classes,·whereas·the | 57 | distinguish·between·the·different·classes,·whereas·the |
| 58 | <a·href="expressions.xhtml#catch-and-throw">catch</a>·expression·cannot.·<code·class="inline">try</code>·and·<code·class="inline">catch</code>·are·described | 58 | <a·href="expressions.xhtml#catch-and-throw">catch</a>·expression·cannot.·<code·class="inline">try</code>·and·<code·class="inline">catch</code>·are·described |
| 59 | in·<a·href="expressions.xhtml">Expressions</a>.</p><table><thead><tr><th·style="text-align:·left;"><em>Class</em></th><th·style="text-align:·left;"><em>Origin</em></th></tr></thead><tbody><tr><td·style="text-align:·left;"><code·class="inline">error</code></td><td·style="text-align:·left;">Run-time·error,·for·example,·<code·class="inline">1+a</code>,·or·the·process·called·<a·href="../../../lib/../erts/doc/html/erlang.html#error/1"><code·class="inline">error/1</code></a></td></tr><tr><td·style="text-align:·left;"><code·class="inline">exit</code></td><td·style="text-align:·left;">The·process·called·<a·href="../../../lib/../erts/doc/html/erlang.html#exit/1"><code·class="inline">exit/1</code></a></td></tr><tr><td·style="text-align:·left;"><code·class="inline">throw</code></td><td·style="text-align:·left;">The·process·called·<a·href="../../../lib/../erts/doc/html/erlang.html#throw/1"><code·class="inline">throw/1</code></a></td></tr></tbody></table><p><em>Table:·Exception·Classes.</em></p><p>All·of·the·above·exceptions·can·also·be·generated·by·calling·<a·href="../../../lib/../erts/doc/html/erlang.html#raise/3"><code·class="inline">erlang:raise/3</code></a>.</p><p>An·exception·consists·of·its·class,·an·exit·reason·(see | 59 | in·<a·href="expressions.xhtml">Expressions</a>.</p><table><thead><tr><th·style="text-align:·left;"><em>Class</em></th><th·style="text-align:·left;"><em>Origin</em></th></tr></thead><tbody><tr><td·style="text-align:·left;"><code·class="inline">error</code></td><td·style="text-align:·left;">Run-time·error,·for·example,·<code·class="inline">1+a</code>,·or·the·process·called·<a·href="../../../lib/../erts/doc/html/erlang.html#error/1"><code·class="inline">error/1</code></a></td></tr><tr><td·style="text-align:·left;"><code·class="inline">exit</code></td><td·style="text-align:·left;">The·process·called·<a·href="../../../lib/../erts/doc/html/erlang.html#exit/1"><code·class="inline">exit/1</code></a></td></tr><tr><td·style="text-align:·left;"><code·class="inline">throw</code></td><td·style="text-align:·left;">The·process·called·<a·href="../../../lib/../erts/doc/html/erlang.html#throw/1"><code·class="inline">throw/1</code></a></td></tr></tbody></table><p><em>Table:·Exception·Classes.</em></p><p>All·of·the·above·exceptions·can·also·be·generated·by·calling·<a·href="../../../lib/../erts/doc/html/erlang.html#raise/3"><code·class="inline">erlang:raise/3</code></a>.</p><p>An·exception·consists·of·its·class,·an·exit·reason·(see |
| 60 | <a·href="errors.xhtml#exit_reasons">Exit·Reason</a>),·and·a·stack·trace·(which·aids·in·finding | 60 | <a·href="errors.xhtml#exit_reasons">Exit·Reason</a>),·and·a·stack·trace·(which·aids·in·finding |
| 61 | the·code·location·of·the·exception).</p><p>The·stack·trace·can·be·bound·to·a·variable·from·within·a·<code·class="inline">try</code>·expression·for | 61 | the·code·location·of·the·exception).</p><p>The·stack·trace·can·be·bound·to·a·variable·from·within·a·<code·class="inline">try</code>·expression·for |
| 62 | any·exception·class,·or·as·part·of·the·exit·reason·when·a·run-time·error·is | 62 | any·exception·class,·or·as·part·of·the·exit·reason·when·a·run-time·error·is |
| 63 | caught·by·a·<code·class="inline">catch</code>.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="p"·data-group-id=" | 63 | caught·by·a·<code·class="inline">catch</code>.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="p"·data-group-id="5502542990-1">{</span><span·class="ss">'EXIT'</span><span·class="p">,</span><span·class="p"·data-group-id="5502542990-2">{</span><span·class="ss">test</span><span·class="p">,</span><span·class="n">Stacktrace</span><span·class="p"·data-group-id="550[·...·truncated·by·diffoscope;·len:·453,·SHA:·0f4d823e050a92ba5028552a3514a66de844521a16758f0cc5e00775dfdb7c13·...·]-3">)</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Stacktrace</span><span·class="p">.</span><span·class="w"> |
| 64 | </span><span·class="p"·data-group-id=" | 64 | </span><span·class="p"·data-group-id="5502542990-5">[</span><span·class="p"·data-group-id="5502542990-6">{</span><span·class="ss">shell</span><span·class="p">,</span><span·class="ss">apply_fun</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="p"·data-g[·...·truncated·by·diffoscope;·len:·125,·SHA:·603bb93f70b42bbd6fe378b15c62af65e0e0a8cc0d6489cb9b83bea65a31d47a·...·]-6">}</span><span·class="p">,</span><span·class="w"> |
| 65 | ·</span><span·class="p"·data-group-id=" | 65 | ·</span><span·class="p"·data-group-id="5502542990-8">{</span><span·class="ss">erl_eval</span><span·class="p">,</span><span·class="ss">do_apply</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="p"·data-group-id="5502542990-9">[</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·74,·SHA:·0e84b624af177ada488dcf49a6cfdbe96b5bb5c272b4279e6201c52d0f25656e·...·]-8">}</span><span·class="p">,</span><span·class="w"> |
| 66 | ·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id=" | 66 | ·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="5502542990-5">]</span><span·class="gp·unselectable"> |
| 67 | >·</span><span·class="k">try</span><span·class="w">·</span><span·class="nf">throw</span><span·class="p"·data-group-id=" | 67 | >·</span><span·class="k">try</span><span·class="w">·</span><span·class="nf">throw</span><span·class="p"·data-group-id="5502542990-10">(</span><span·class="ss">test</span><span·class="p"·data-group-id="5502542990-10">)</span><span·class="w">·</span><span·class="k">catch</span><span·class="w">·</span><span·class="n">Class</span><span·class="p">:</span><span·class="n">Reason</span><span·class="p">:</span><span·class="n">Stacktrace</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Stacktrace</span><span·class="w">·</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 68 | </span><span·class="p"·data-group-id=" | 68 | </span><span·class="p"·data-group-id="5502542990-11">[</span><span·class="p"·data-group-id="5502542990-12">{</span><span·class="ss">shell</span><span·class="p">,</span><span·class="ss">apply_fun</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·129,·SHA:·fd234c23e675a4c32fdb0e0384a3d1021bd9d731f68eee66d32f653bddb520b9·...·]-12">}</span><span·class="p">,</span><span·class="w"> |
| 69 | ·</span><span·class="p"·data-group-id=" | 69 | ·</span><span·class="p"·data-group-id="5502542990-14">{</span><span·class="ss">erl_eval</span><span·class="p">,</span><span·class="ss">do_apply</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="p"·data-group-id="5502542990-15">[</span><span·class="p"·da[·...·truncated·by·diffoscope;·len:·77,·SHA:·9efae72b4bb3abaa4f05412ac713271ca9f2bfecd101bb8a6e00f21574855f65·...·]-14">}</span><span·class="p">,</span><span·class="w"> |
| 70 | ·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id=" | 70 | ·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="5502542990-11">]</span></code></pre><p><a·href=""·id="stacktrace"></a></p><h3·id="the-call-stack-back-trace-stacktrace"·class="section-heading"> |
| 71 | ··<a·href="#the-call-stack-back-trace-stacktrace"·class="hover-link"> | 71 | ··<a·href="#the-call-stack-back-trace-stacktrace"·class="hover-link"> |
| 72 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 72 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 73 | ··</a> | 73 | ··</a> |
| 74 | ··<span·class="text">The·call-stack·back·trace·(stacktrace)</span> | 74 | ··<span·class="text">The·call-stack·back·trace·(stacktrace)</span> |
| 75 | </h3> | 75 | </h3> |
| 76 | <p>The·stack·back-trace·(<a·href="../../../lib/../erts/doc/html/erlang.html#t:stacktrace/0"><em>stacktrace</em></a>)·is·a·list·that | 76 | <p>The·stack·back-trace·(<a·href="../../../lib/../erts/doc/html/erlang.html#t:stacktrace/0"><em>stacktrace</em></a>)·is·a·list·that |
| 77 | contains·<code·class="inline">{Module,·Function,·Arity,·ExtraInfo}</code>·and/or·<code·class="inline">{Fun,·Arity,·ExtraInfo}</code> | 77 | contains·<code·class="inline">{Module,·Function,·Arity,·ExtraInfo}</code>·and/or·<code·class="inline">{Fun,·Arity,·ExtraInfo}</code> |
| Offset 27, 23 lines modified | Offset 27, 23 lines modified | ||
| 27 | ··<span·class="text">Drivers·and·Concurrency</span> | 27 | ··<span·class="text">Drivers·and·Concurrency</span> |
| 28 | </h2> | 28 | </h2> |
| 29 | <p>The·runtime·system·always·takes·a·lock·before·running·any·code·in·a·driver.</p><p>By·default,·that·lock·is·at·the·driver·level,·that·is,·if·several·ports·have | 29 | <p>The·runtime·system·always·takes·a·lock·before·running·any·code·in·a·driver.</p><p>By·default,·that·lock·is·at·the·driver·level,·that·is,·if·several·ports·have |
| 30 | been·opened·to·the·same·driver,·only·code·for·one·port·at·the·same·time·can·be | 30 | been·opened·to·the·same·driver,·only·code·for·one·port·at·the·same·time·can·be |
| 31 | running.</p><p>A·driver·can·be·configured·to·have·one·lock·for·each·port·instead.</p><p>If·a·driver·is·used·in·a·functional·way·(that·is,·holds·no·state,·but·only·does | 31 | running.</p><p>A·driver·can·be·configured·to·have·one·lock·for·each·port·instead.</p><p>If·a·driver·is·used·in·a·functional·way·(that·is,·holds·no·state,·but·only·does |
| 32 | some·heavy·calculation·and·returns·a·result),·several·ports·with·registered | 32 | some·heavy·calculation·and·returns·a·result),·several·ports·with·registered |
| 33 | names·can·be·opened·beforehand,·and·the·port·to·be·used·can·be·chosen·based·on | 33 | names·can·be·opened·beforehand,·and·the·port·to·be·used·can·be·chosen·based·on |
| 34 | the·scheduler·ID·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id=" | 34 | the·scheduler·ID·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="9598994254-1">(</span><span·class="n">PORT_NAMES</span><span·class="p"·data-group-id="9598994254-2">(</span><span·class="p"·data-group-id="9598994254-2">)</span><span·class="p">,</span><span·class="w"> |
| 35 | » </span><span·class="p"·data-group-id=" | 35 | » </span><span·class="p"·data-group-id="9598994254-3">{</span><span·class="ss">some_driver_01</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_02</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_03</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_04</span><span·class="p">,</span><span·class="w"> |
| 36 | » ·</span><span·class="ss">some_driver_05</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_06</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_07</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_08</span><span·class="p">,</span><span·class="w"> | 36 | » ·</span><span·class="ss">some_driver_05</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_06</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_07</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_08</span><span·class="p">,</span><span·class="w"> |
| 37 | » ·</span><span·class="ss">some_driver_09</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_10</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_11</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_12</span><span·class="p">,</span><span·class="w"> | 37 | » ·</span><span·class="ss">some_driver_09</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_10</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_11</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_12</span><span·class="p">,</span><span·class="w"> |
| 38 | » ·</span><span·class="ss">some_driver_13</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_14</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_15</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_16</span><span·class="p"·data-group-id=" | 38 | » ·</span><span·class="ss">some_driver_13</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_14</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_15</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_16</span><span·class="p"·data-group-id="9598994254-3">}</span><span·class="p"·data-group-id="9598994254-1">)</span><span·class="p">.</span><span·class="w"> |
| 39 | </span><span·class="nf">client_port</span><span·class="p"·data-group-id=" | 39 | </span><span·class="nf">client_port</span><span·class="p"·data-group-id="9598994254-4">(</span><span·class="p"·data-group-id="9598994254-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 40 | ····</span><span·class="nf">element</span><span·class="p"·data-group-id=" | 40 | ····</span><span·class="nf">element</span><span·class="p"·data-group-id="9598994254-5">(</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">system_info</span><span·class="p"·data-group-id="9598994254-6">(</span><span·class="ss">scheduler_id</span><span·class="p"·data-group-id="9598994254-6">)</span><sp[·...·truncated·by·diffoscope;·len:·363,·SHA:·8cbffd1c652bd55173364b7b5548df9a1abb78325d9d461bf93d5957be095558·...·]-7">)</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> |
| 41 | » ····</span><span·class="o">?</span><span·class="n">PORT_NAMES</span><span·class="p"·data-group-id=" | 41 | » ····</span><span·class="o">?</span><span·class="n">PORT_NAMES</span><span·class="p"·data-group-id="9598994254-9">(</span><span·class="p"·data-group-id="9598994254-9">)</span><span·class="p"·data-group-id="9598994254-5">)</span><span·class="p">.</span></code></pre><p>As·long·as·there·are·no·more·than·16·schedulers,·there·will·never·be·any·lock |
| 42 | contention·on·the·port·lock·for·the·driver.</p><h2·id="avoiding-copying-binaries-when-calling-a-driver"·class="section-heading"> | 42 | contention·on·the·port·lock·for·the·driver.</p><h2·id="avoiding-copying-binaries-when-calling-a-driver"·class="section-heading"> |
| 43 | ··<a·href="#avoiding-copying-binaries-when-calling-a-driver"·class="hover-link"> | 43 | ··<a·href="#avoiding-copying-binaries-when-calling-a-driver"·class="hover-link"> |
| 44 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 44 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 45 | ··</a> | 45 | ··</a> |
| 46 | ··<span·class="text">Avoiding·Copying·Binaries·When·Calling·a·Driver</span> | 46 | ··<span·class="text">Avoiding·Copying·Binaries·When·Calling·a·Driver</span> |
| 47 | </h2> | 47 | </h2> |
| 48 | <p>There·are·basically·two·ways·to·avoid·copying·a·binary·that·is·sent·to·a·driver:</p><ul><li><p>If·the·<code·class="inline">Data</code>·argument·for·<a·href="../../../lib/../erts/doc/html/erlang.html#port_control/3"><code·class="inline">port_control/3</code></a>·is·a | 48 | <p>There·are·basically·two·ways·to·avoid·copying·a·binary·that·is·sent·to·a·driver:</p><ul><li><p>If·the·<code·class="inline">Data</code>·argument·for·<a·href="../../../lib/../erts/doc/html/erlang.html#port_control/3"><code·class="inline">port_control/3</code></a>·is·a |
| Offset 47, 25 lines modified | Offset 47, 25 lines modified | ||
| 47 | </h2> | 47 | </h2> |
| 48 | <p>A·<em>node</em>·is·an·executing·Erlang·runtime·system·that·has·been·given·a·name,·using | 48 | <p>A·<em>node</em>·is·an·executing·Erlang·runtime·system·that·has·been·given·a·name,·using |
| 49 | the·command-line·flag·<a·href="../../../lib/../erts/doc/html/erl_cmd.xhtml#name"><code·class="inline">-name</code></a>·(long·names)·or | 49 | the·command-line·flag·<a·href="../../../lib/../erts/doc/html/erl_cmd.xhtml#name"><code·class="inline">-name</code></a>·(long·names)·or |
| 50 | <a·href="../../../lib/../erts/doc/html/erl_cmd.xhtml#sname"><code·class="inline">-sname</code></a>·(short·names).</p><p>The·format·of·the·node·name·is·an·atom·<code·class="inline">name@host</code>.·<code·class="inline">name</code>·is·the·name·given·by | 50 | <a·href="../../../lib/../erts/doc/html/erl_cmd.xhtml#sname"><code·class="inline">-sname</code></a>·(short·names).</p><p>The·format·of·the·node·name·is·an·atom·<code·class="inline">name@host</code>.·<code·class="inline">name</code>·is·the·name·given·by |
| 51 | the·user.·<code·class="inline">host</code>·is·the·full·host·name·if·long·names·are·used,·or·the·first·part | 51 | the·user.·<code·class="inline">host</code>·is·the·full·host·name·if·long·names·are·used,·or·the·first·part |
| 52 | of·the·host·name·if·short·names·are·used.·Function·<a·href="../../../lib/../erts/doc/html/erlang.html#node/0"><code·class="inline">node()</code></a> | 52 | of·the·host·name·if·short·names·are·used.·Function·<a·href="../../../lib/../erts/doc/html/erlang.html#node/0"><code·class="inline">node()</code></a> |
| 53 | returns·the·name·of·the·node.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl·-name·dilbert</span><span·class="w"> | 53 | returns·the·name·of·the·node.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl·-name·dilbert</span><span·class="w"> |
| 54 | </span><span·class="p"·data-group-id=" | 54 | </span><span·class="p"·data-group-id="8776772991-1">(</span><span·class="ss">dilbert@uab</span><span·class="p">.</span><span·class="ss">ericsson</span><span·class="p">.</span><span·class="ss">se</span><span·class="p"·data-group-id="8776772991-1">)</span><span·class="mi">1</span><span·class="o"[·...·truncated·by·diffoscope;·len:·158,·SHA:·b81a8431881ae369a661a4eb6f61519401bc106cb5d9a6070173b903c02169c3·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 55 | </span><span·class="ss">'dilbert@uab.ericsson.se'</span><span·class="w"> | 55 | </span><span·class="ss">'dilbert@uab.ericsson.se'</span><span·class="w"> |
| 56 | </span><span·class="c1">%·erl·-sname·dilbert</span><span·class="gp·unselectable"> | 56 | </span><span·class="c1">%·erl·-sname·dilbert</span><span·class="gp·unselectable"> |
| 57 | (dilbert@uab)1>·</span><span·class="nf">node</span><span·class="p"·data-group-id=" | 57 | (dilbert@uab)1>·</span><span·class="nf">node</span><span·class="p"·data-group-id="8776772991-3">(</span><span·class="p"·data-group-id="8776772991-3">)</span><span·class="p">.</span><span·class="w"> |
| 58 | </span><span·class="ss">dilbert@uab</span></code></pre><p>The·node·name·can·also·be·given·in·runtime·by·calling·<a·href="../../../lib/kernel/doc/html/net_kernel.html#start/1"><code·class="inline">net_kernel:start/1</code></a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl</span><span·class="gp·unselectable"> | 58 | </span><span·class="ss">dilbert@uab</span></code></pre><p>The·node·name·can·also·be·given·in·runtime·by·calling·<a·href="../../../lib/kernel/doc/html/net_kernel.html#start/1"><code·class="inline">net_kernel:start/1</code></a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl</span><span·class="gp·unselectable"> |
| 59 | 1>·</span><span·class="nf">node</span><span·class="p"·data-group-id="3 | 59 | 1>·</span><span·class="nf">node</span><span·class="p"·data-group-id="1357784675-1">(</span><span·class="p"·data-group-id="1357784675-1">)</span><span·class="p">.</span><span·class="w"> |
| 60 | </span><span·class="ss">nonode@nohost</span><span·class="gp·unselectable"> | 60 | </span><span·class="ss">nonode@nohost</span><span·class="gp·unselectable"> |
| 61 | 2>·</span><span·class="nc">net_kernel</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="3 | 61 | 2>·</span><span·class="nc">net_kernel</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="1357784675-2">(</span><span·class="p"·data-group-id="1357784675-3">[</span><span·class="ss">dilbert</span><span·class="p">,</span><span·class="ss">shortnames</span><span·class="p"·data-group-id="1357784675-3">]</span><span·class="p"·data-group-id="13577846[·...·truncated·by·diffoscope;·len:·2,·SHA:·f369cb89fc627e668987007d121ed1eacdc01db9e28f8bb26f358b7d8c4f08ac·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 62 | </span><span·class="p"·data-group-id="3 | 62 | </span><span·class="p"·data-group-id="1357784675-4">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.102</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="1357784675-4">}</span><span·class="gp·unselectable"> |
| 63 | (dilbert@uab)3>·</span><span·class="nf">node</span><span·class="p"·data-group-id="3 | 63 | (dilbert@uab)3>·</span><span·class="nf">node</span><span·class="p"·data-group-id="1357784675-5">(</span><span·class="p"·data-group-id="1357784675-5">)</span><span·class="p">.</span><span·class="w"> |
| 64 | </span><span·class="ss">dilbert@uab</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>A·node·with·a·long·node·name·cannot·communicate·with·a·node·with·a·short·node | 64 | </span><span·class="ss">dilbert@uab</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>A·node·with·a·long·node·name·cannot·communicate·with·a·node·with·a·short·node |
| 65 | name.</p></section><h2·id="node-connections"·class="section-heading"> | 65 | name.</p></section><h2·id="node-connections"·class="section-heading"> |
| 66 | ··<a·href="#node-connections"·class="hover-link"> | 66 | ··<a·href="#node-connections"·class="hover-link"> |
| 67 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 67 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 68 | ··</a> | 68 | ··</a> |
| 69 | ··<span·class="text">Node·Connections</span> | 69 | ··<span·class="text">Node·Connections</span> |
| 70 | </h2> | 70 | </h2> |
| Offset 49, 16 lines modified | Offset 49, 16 lines modified | ||
| 49 | fast·as·possible,·what·can·we·do?·One·way·could·be·to·generate·more | 49 | fast·as·possible,·what·can·we·do?·One·way·could·be·to·generate·more |
| 50 | than·two·bytes·at·the·time.</p><pre><code·class="text">%·erlperf·'rand:bytes(100).'·'crypto:strong_rand_bytes(100).' | 50 | than·two·bytes·at·the·time.</p><pre><code·class="text">%·erlperf·'rand:bytes(100).'·'crypto:strong_rand_bytes(100).' |
| 51 | Code···································||········QPS·······Time···Rel | 51 | Code···································||········QPS·······Time···Rel |
| 52 | rand:bytes(100).························1····2124·Ki·····470·ns··100% | 52 | rand:bytes(100).························1····2124·Ki·····470·ns··100% |
| 53 | crypto:strong_rand_bytes(100).··········1····1915·Ki·····522·ns···90%</code></pre><p><a·href="../../../lib/stdlib/doc/html/rand.html#bytes/1"><code·class="inline">rand:bytes/1</code></a>·is·still·faster·when·we·generate·100·bytes·at·the·time, | 53 | crypto:strong_rand_bytes(100).··········1····1915·Ki·····522·ns···90%</code></pre><p><a·href="../../../lib/stdlib/doc/html/rand.html#bytes/1"><code·class="inline">rand:bytes/1</code></a>·is·still·faster·when·we·generate·100·bytes·at·the·time, |
| 54 | but·the·relative·difference·is·smaller.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erlperf·'rand:bytes(1000).'·'crypto:strong_rand_bytes(1000).'</span><span·class="w"> | 54 | but·the·relative·difference·is·smaller.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erlperf·'rand:bytes(1000).'·'crypto:strong_rand_bytes(1000).'</span><span·class="w"> |
| 55 | </span><span·class="n">Code</span><span·class="w">····································</span><span·class="p">||</span><span·class="w">········</span><span·class="n">QPS</span><span·class="w">·······</span><span·class="n">Time</span><span·class="w">···</span><span·class="n">Rel</span><span·class="w"> | 55 | </span><span·class="n">Code</span><span·class="w">····································</span><span·class="p">||</span><span·class="w">········</span><span·class="n">QPS</span><span·class="w">·······</span><span·class="n">Time</span><span·class="w">···</span><span·class="n">Rel</span><span·class="w"> |
| 56 | </span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">strong_rand_bytes</span><span·class="p"·data-group-id=" | 56 | </span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">strong_rand_bytes</span><span·class="p"·data-group-id="9472286544-1">(</span><span·class="mi">1000</span><span·class="p"·data-group-id="9472286544-1">)</span><span·class="p">.</span><span·class="w">··········</span><span·class="mi">1</span><span·class="w">····</span><span·class="mi">1518</span><span·class="w">·</span><span·class="n">Ki</span><span·class="w">·····</span><span·class="mi">658</span><span·class="w">·</span><span·class="ss">ns</span><span·class="w">··</span><span·class="mi">100</span><span·class="c1">%</span><span·class="w"> |
| 57 | </span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">bytes</span><span·class="p"·data-group-id=" | 57 | </span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">bytes</span><span·class="p"·data-group-id="9472286544-2">(</span><span·class="mi">1000</span><span·class="p"·data-group-id="9472286544-2">)</span><span·class="p">.</span><span·class="w">························</span><span·class="mi">1</span><span·class="w">·····</span><span·class="mi">284</span><span·class="w">·</span><span·class="n">Ki</span><span·class="w">····</span><span·class="mi">3521</span><span·class="w">·</span><span·class="ss">ns</span><span·class="w">···</span><span·class="mi">19</span><span·class="c1">%</span></code></pre><p>When·we·generate·1000·bytes·at·the·time,·<a·href="../../../lib/crypto/doc/html/crypto.html#strong_rand_bytes/1"><code·class="inline">crypto:strong_rand_bytes/1</code></a>·is |
| 58 | now·the·fastest.</p><h2·id="benchmarking-using-erlang-otp-functionality"·class="section-heading"> | 58 | now·the·fastest.</p><h2·id="benchmarking-using-erlang-otp-functionality"·class="section-heading"> |
| 59 | ··<a·href="#benchmarking-using-erlang-otp-functionality"·class="hover-link"> | 59 | ··<a·href="#benchmarking-using-erlang-otp-functionality"·class="hover-link"> |
| 60 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 60 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 61 | ··</a> | 61 | ··</a> |
| 62 | ··<span·class="text">Benchmarking·using·Erlang/OTP·functionality</span> | 62 | ··<span·class="text">Benchmarking·using·Erlang/OTP·functionality</span> |
| 63 | </h2> | 63 | </h2> |
| 64 | <p>Benchmarks·can·measure·wall-clock·time·or·CPU·time.</p><ul><li><p><a·href="../../../lib/stdlib/doc/html/timer.html#tc/3"><code·class="inline">timer:tc/3</code></a>·measures·wall-clock·time.·The·advantage·with·wall-clock·time·is | 64 | <p>Benchmarks·can·measure·wall-clock·time·or·CPU·time.</p><ul><li><p><a·href="../../../lib/stdlib/doc/html/timer.html#tc/3"><code·class="inline">timer:tc/3</code></a>·measures·wall-clock·time.·The·advantage·with·wall-clock·time·is |
| Offset 135, 34 lines modified | Offset 135, 34 lines modified | ||
| 135 | <a·href="applications.html#app_dir">directory·structure</a>.</p><p><a·href=""·id="callback_module"></a></p><h2·id="application-callback-module"·class="section-heading"> | 135 | <a·href="applications.html#app_dir">directory·structure</a>.</p><p><a·href=""·id="callback_module"></a></p><h2·id="application-callback-module"·class="section-heading"> |
| 136 | ··<a·href="#application-callback-module"·class="hover-link"> | 136 | ··<a·href="#application-callback-module"·class="hover-link"> |
| 137 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 137 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 138 | ··</a> | 138 | ··</a> |
| 139 | ··<span·class="text">Application·Callback·Module</span> | 139 | ··<span·class="text">Application·Callback·Module</span> |
| 140 | </h2> | 140 | </h2> |
| 141 | <p>How·to·start·and·stop·the·code·for·the·application,·including·its·supervision | 141 | <p>How·to·start·and·stop·the·code·for·the·application,·including·its·supervision |
| 142 | tree,·is·described·by·two·callback·functions:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">start</span><span·class="p"·data-group-id="2760374383-1">(</span><span·class="n">StartType</span><span·class="p">,</span><span·class="w">·</span><span·class="n">StartArgs</span><span·class="p"·data-group-id="2760374383-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="2760374383-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pid</span><span·class="p"·data-group-id="2760374383-2">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="2760374383-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pid</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="p"·data-group-id="2760374383-3">}</span><span·class="w"> | ||
| 143 | 142 | tree,·is·described·by·two·callback·functions:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">start</span><span·class="p"·data-group-id="2982239667-1">(</span><span·class="n">StartType</span><span·class="p">,</span><span·class="w">·</sp[·...·truncated·by·diffoscope;·len:·740,·SHA:·5e3f78a9e58c2ee7fa66321011f7be526f8007d471136d88e985fa47317e96d2·...·] | |
| 143 | </span><span·class="nf">stop</span><span·class="p"·data-group-id="2982239667-4">(</span><span·class="n">State</span><span·class="p"·data-group-id="2982239667-4">)</span></code></pre><ul><li><code·class="inline">start/2</code>·is·called·when·starting·the·application·and·is·to·create·the | ||
| 144 | supervision·tree·by·starting·the·top·supervisor.·It·is·expected·to·return·the | 144 | supervision·tree·by·starting·the·top·supervisor.·It·is·expected·to·return·the |
| 145 | pid·of·the·top·supervisor·and·an·optional·term,·<code·class="inline">State</code>,·which·defaults·to | 145 | pid·of·the·top·supervisor·and·an·optional·term,·<code·class="inline">State</code>,·which·defaults·to |
| 146 | <code·class="inline">[]</code>.·This·term·is·passed·as·is·to·<code·class="inline">stop/1</code>.</li><li><code·class="inline">StartType</code>·is·usually·the·atom·<code·class="inline">normal</code>.·It·has·other·values·only·in·the·case | 146 | <code·class="inline">[]</code>.·This·term·is·passed·as·is·to·<code·class="inline">stop/1</code>.</li><li><code·class="inline">StartType</code>·is·usually·the·atom·<code·class="inline">normal</code>.·It·has·other·values·only·in·the·case |
| 147 | of·a·takeover·or·failover;·see | 147 | of·a·takeover·or·failover;·see |
| 148 | <a·href="distributed_applications.html">Distributed·Applications</a>.</li><li><code·class="inline">StartArgs</code>·is·defined·by·the·key·<code·class="inline">mod</code>·in·the | 148 | <a·href="distributed_applications.html">Distributed·Applications</a>.</li><li><code·class="inline">StartArgs</code>·is·defined·by·the·key·<code·class="inline">mod</code>·in·the |
| 149 | <a·href="applications.html#appl_res_file">application·resource·file</a>.</li><li><code·class="inline">stop/1</code>·is·called·<em>after</em>·the·application·has·been·stopped·and·is·to·do·any | 149 | <a·href="applications.html#appl_res_file">application·resource·file</a>.</li><li><code·class="inline">stop/1</code>·is·called·<em>after</em>·the·application·has·been·stopped·and·is·to·do·any |
| 150 | necessary·cleaning·up.·The·actual·stopping·of·the·application,·that·is, | 150 | necessary·cleaning·up.·The·actual·stopping·of·the·application,·that·is, |
| 151 | shutting·down·the·supervision·tree,·is·handled·automatically·as·described·in | 151 | shutting·down·the·supervision·tree,·is·handled·automatically·as·described·in |
| 152 | <a·href="applications.html#stopping">Starting·and·Stopping·Applications</a>.</li></ul><p><a·href=""·id="ch_app"></a></p><p>Example·of·an·application·callback·module·for·packaging·the·supervision·tree | 152 | <a·href="applications.html#stopping">Starting·and·Stopping·Applications</a>.</li></ul><p><a·href=""·id="ch_app"></a></p><p>Example·of·an·application·callback·module·for·packaging·the·supervision·tree |
| 153 | from·<a·href="sup_princ.html#ex">Supervisor·Behaviour</a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 153 | from·<a·href="sup_princ.html#ex">Supervisor·Behaviour</a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="3086761755-1">(</span><span·class="ss">ch_app</span><span·class="p"·data-group-id="3086761755-1">)</span><span·class="p">.</span><span·class="w"> |
| 154 | </span><span·class="p">-</span><span·class="na">behaviour</span><span·class="p"·data-group-id=" | 154 | </span><span·class="p">-</span><span·class="na">behaviour</span><span·class="p"·data-group-id="3086761755-2">(</span><span·class="ss">application</span><span·class="p"·data-group-id="3086761755-2">)</span><span·class="p">.</span><span·class="w"> |
| 155 | </span><span·class="w"> | 155 | </span><span·class="w"> |
| 156 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 156 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="3086761755-3">(</span><span·class="p"·data-group-id="3086761755-4">[</span><span·class="ss">start</span><span·class="p">/</span><span·class="mi">2</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">stop</span><span·class="p">/</span><sp[·...·truncated·by·diffoscope;·len:·116,·SHA:·3db505aefdddba81da002aed48535cd2a97320f7c8d2eb248fe1eb2aa6eb067c·...·]-3">)</span><span·class="p">.</span><span·class="w"> |
| 157 | </span><span·class="nf">start</span><span·class="p"·data-group-id=" | 157 | </span><span·class="nf">start</span><span·class="p"·data-group-id="3086761755-5">(</span><span·class="p">_</span><span·class="n">Type</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">Args</span><span·class="p"·data-group-id="3086761755-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 158 | ····</span><span·class="nc">ch_sup</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 158 | ····</span><span·class="nc">ch_sup</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id="3086761755-6">(</span><span·class="p"·data-group-id="3086761755-6">)</span><span·class="p">.</span><span·class="w"> |
| 159 | </span><span·class="nf">stop</span><span·class="p"·data-group-id=" | 159 | </span><span·class="nf">stop</span><span·class="p"·data-group-id="3086761755-7">(</span><span·class="p">_</span><span·class="n">State</span><span·class="p"·data-group-id="3086761755-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 160 | ····</span><span·class="ss">ok</span><span·class="p">.</span></code></pre><p>A·library·application·that·cannot·be·started·or·stopped·does·not·need·any | 160 | ····</span><span·class="ss">ok</span><span·class="p">.</span></code></pre><p>A·library·application·that·cannot·be·started·or·stopped·does·not·need·any |
| 161 | application·callback·module.</p><p><a·href=""·id="appl_res_file"></a></p><h2·id="application-resource-file"·class="section-heading"> | 161 | application·callback·module.</p><p><a·href=""·id="appl_res_file"></a></p><h2·id="application-resource-file"·class="section-heading"> |
| 162 | ··<a·href="#application-resource-file"·class="hover-link"> | 162 | ··<a·href="#application-resource-file"·class="hover-link"> |
| 163 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 163 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 164 | ··</a> | 164 | ··</a> |
| 165 | ··<span·class="text">Application·Resource·File</span> | 165 | ··<span·class="text">Application·Resource·File</span> |
| 166 | </h2> | 166 | </h2> |
| Offset 173, 22 lines modified | Offset 173, 22 lines modified | ||
| 173 | keys.</li></ul><p>The·contents·of·a·minimal·<code·class="inline">.app</code>·file·for·a·library·application·<code·class="inline">libapp</code>·looks | 173 | keys.</li></ul><p>The·contents·of·a·minimal·<code·class="inline">.app</code>·file·for·a·library·application·<code·class="inline">libapp</code>·looks |
| 174 | as·follows:</p><pre><code·class="text">{application,·libapp,·[]}.</code></pre><p>The·contents·of·a·minimal·<code·class="inline">.app</code>·file·<code·class="inline">ch_app.app</code>·for·a·supervision·tree | 174 | as·follows:</p><pre><code·class="text">{application,·libapp,·[]}.</code></pre><p>The·contents·of·a·minimal·<code·class="inline">.app</code>·file·<code·class="inline">ch_app.app</code>·for·a·supervision·tree |
| 175 | application·like·<code·class="inline">ch_app</code>·looks·as·follows:</p><pre><code·class="text">{application,·ch_app, | 175 | application·like·<code·class="inline">ch_app</code>·looks·as·follows:</p><pre><code·class="text">{application,·ch_app, |
| 176 | ·[{mod,·{ch_app,[]}}]}.</code></pre><p>The·key·<code·class="inline">mod</code>·defines·the·callback·module·and·start·argument·of·the·application, | 176 | ·[{mod,·{ch_app,[]}}]}.</code></pre><p>The·key·<code·class="inline">mod</code>·defines·the·callback·module·and·start·argument·of·the·application, |
| 177 | in·this·case·<code·class="inline">ch_app</code>·and·<code·class="inline">[]</code>,·respectively.·This·means·that·the·following·is | 177 | in·this·case·<code·class="inline">ch_app</code>·and·<code·class="inline">[]</code>,·respectively.·This·means·that·the·following·is |
| 178 | called·when·the·application·is·to·be·started:</p><pre><code·class="text">ch_app:start(normal,·[])</code></pre><p>The·following·is·called·when·the·application·is·stopped:</p><pre><code·class="text">ch_app:stop([])</code></pre><p>When·using·<a·href="../../lib/sasl-4.2.2/doc/html/systools.html"><code·class="inline">systools</code></a>,·the·Erlang/OTP·tools·for·packaging·code·(see·Section | 178 | called·when·the·application·is·to·be·started:</p><pre><code·class="text">ch_app:start(normal,·[])</code></pre><p>The·following·is·called·when·the·application·is·stopped:</p><pre><code·class="text">ch_app:stop([])</code></pre><p>When·using·<a·href="../../lib/sasl-4.2.2/doc/html/systools.html"><code·class="inline">systools</code></a>,·the·Erlang/OTP·tools·for·packaging·code·(see·Section |
| 179 | <a·href="release_structure.html">Releases</a>),·the·keys·<code·class="inline">description</code>,·<code·class="inline">vsn</code>,·<code·class="inline">modules</code>, | 179 | <a·href="release_structure.html">Releases</a>),·the·keys·<code·class="inline">description</code>,·<code·class="inline">vsn</code>,·<code·class="inline">modules</code>, |
| 180 | <code·class="inline">registered</code>,·and·<code·class="inline">applications</code>·are·also·to·be·specified:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 180 | <code·class="inline">registered</code>,·and·<code·class="inline">applications</code>·are·also·to·be·specified:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="1341239270-1">{</span><span·class="ss">application</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ch_app</span><span·class="p">,</span><span·class="w"> |
| 181 | ·</span><span·class="p"·data-group-id=" | 181 | ·</span><span·class="p"·data-group-id="1341239270-2">[</span><span·class="p"·data-group-id="1341239270-3">{</span><span·class="ss">description</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"Channel·allocator"</span><span·class="p"·data-group-id="1341239270-3">}</span><span·class="p">,</span><span·class="w"> |
| 182 | ··</span><span·class="p"·data-group-id=" | 182 | ··</span><span·class="p"·data-group-id="1341239270-4">{</span><span·class="ss">vsn</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"1"</span><span·class="p"·data-group-id="1341239270-4">}</span><span·class="p">,</span><span·class="w"> |
| 183 | ··</span><span·class="p"·data-group-id=" | 183 | ··</span><span·class="p"·data-group-id="1341239270-5">{</span><span·class="ss">modules</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1341239270-6">[</span><span·class="ss">ch_app</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ch_sup<[·...·truncated·by·diffoscope;·len:·175,·SHA:·8db6dd7925523d41dfb9c14db400eaf357a90859dbc65ca0efce39664673d60e·...·]-5">}</span><span·class="p">,</span><span·class="w"> |
| 184 | ··</span><span·class="p"·data-group-id=" | 184 | ··</span><span·class="p"·data-group-id="1341239270-7">{</span><span·class="ss">registered</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1341239270-8">[</span><span·class="ss">ch3</span><span·class="p"·data-group-id="1341239270-8">]</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·22,·SHA:·f27e7df9462ba04ed3b82c112e737d8d73b2d1c9dac24284905fe23200e55632·...·]-7">}</span><span·class="p">,</span><span·class="w"> |
| 185 | ··</span><span·class="p"·data-group-id=" | 185 | ··</span><span·class="p"·data-group-id="1341239270-9">{</span><span·class="ss">applications</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1341239270-10">[</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">s[·...·truncated·by·diffoscope;·len:·183,·SHA:·dbca09f5b0736cbf03423ecc1d6f4eba2e7c616a8530dcae24298ad010ef0755·...·]-9">}</span><span·class="p">,</span><span·class="w"> |
| 186 | ··</span><span·class="p"·data-group-id=" | 186 | ··</span><span·class="p"·data-group-id="1341239270-11">{</span><span·class="ss">mod</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1341239270-12">{</span><span·class="ss">ch_app</span><span·class="p">,</span><span·class="p"·data-group-id="1341239270-13">[</s[·...·truncated·by·diffoscope;·len:·153,·SHA:·545c6a50afe8a6f64b2efbf2e135c81c49656c591f0641405148f860e84339df·...·]-11">}</span><span·class="w"> |
| 187 | ·</span><span·class="p"·data-group-id=" | 187 | ·</span><span·class="p"·data-group-id="1341239270-2">]</span><span·class="p"·data-group-id="1341239270-1">}</span><span·class="p">.</span></code></pre><ul><li><code·class="inline">description</code>·-·A·short·description,·a·string.·Defaults·to·<code·class="inline">""</code>.</li><li><code·class="inline">vsn</code>·-·Version·number,·a·string.·Defaults·to·<code·class="inline">""</code>.</li><li><code·class="inline">modules</code>·-·All·modules·<em>introduced</em>·by·this·application.·<a·href="../../lib/sasl-4.2.2/doc/html/systools.html"><code·class="inline">systools</code></a>·uses |
| 188 | this·list·when·generating·boot·scripts·and·tar·files.·A·module·must·only | 188 | this·list·when·generating·boot·scripts·and·tar·files.·A·module·must·only |
| 189 | be·included·in·one·application.·Defaults·to·<code·class="inline">[]</code>.</li><li><code·class="inline">registered</code>·-·All·names·of·registered·processes·in·the·application. | 189 | be·included·in·one·application.·Defaults·to·<code·class="inline">[]</code>.</li><li><code·class="inline">registered</code>·-·All·names·of·registered·processes·in·the·application. |
| 190 | <a·href="../../lib/sasl-4.2.2/doc/html/systools.html"><code·class="inline">systools</code></a>·uses·this·list·to·detect·name·clashes·between·applications. | 190 | <a·href="../../lib/sasl-4.2.2/doc/html/systools.html"><code·class="inline">systools</code></a>·uses·this·list·to·detect·name·clashes·between·applications. |
| 191 | Defaults·to·<code·class="inline">[]</code>.</li><li><code·class="inline">applications</code>·-·All·applications·that·must·be·started·before·this | 191 | Defaults·to·<code·class="inline">[]</code>.</li><li><code·class="inline">applications</code>·-·All·applications·that·must·be·started·before·this |
| 192 | application·is·started.·<a·href="../../lib/sasl-4.2.2/doc/html/systools.html"><code·class="inline">systools</code></a>·uses·this·list·to·generate·correct·boot | 192 | application·is·started.·<a·href="../../lib/sasl-4.2.2/doc/html/systools.html"><code·class="inline">systools</code></a>·uses·this·list·to·generate·correct·boot |
| 193 | scripts.·Defaults·to·<code·class="inline">[]</code>.·Notice·that·all·applications·have·dependencies·to | 193 | scripts.·Defaults·to·<code·class="inline">[]</code>.·Notice·that·all·applications·have·dependencies·to |
| 194 | at·least·Kernel·and·STDLIB.</li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>For·details·about·the·syntax·and·contents·of·the·application·resource·file, | 194 | at·least·Kernel·and·STDLIB.</li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>For·details·about·the·syntax·and·contents·of·the·application·resource·file, |
| Offset 300, 38 lines modified | Offset 300, 38 lines modified | ||
| 300 | stop·applications.</p><h2·id="loading-and-unloading-applications"·class="section-heading"> | 300 | stop·applications.</p><h2·id="loading-and-unloading-applications"·class="section-heading"> |
| 301 | ··<a·href="#loading-and-unloading-applications"·class="hover-link"> | 301 | ··<a·href="#loading-and-unloading-applications"·class="hover-link"> |
| 302 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 302 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 303 | ··</a> | 303 | ··</a> |
| 304 | ··<span·class="text">Loading·and·Unloading·Applications</span> | 304 | ··<span·class="text">Loading·and·Unloading·Applications</span> |
| 305 | </h2> | 305 | </h2> |
| 306 | <p>Before·an·application·can·be·started,·it·must·be·<em>loaded</em>.·The·application | 306 | <p>Before·an·application·can·be·started,·it·must·be·<em>loaded</em>.·The·application |
| 307 | controller·reads·and·stores·the·information·from·the·<code·class="inline">.app</code>·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">application</span><span·class="p">:</span><span·class="nf">load</span><span·class="p"·data-group-id=" | 307 | controller·reads·and·stores·the·information·from·the·<code·class="inline">.app</code>·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">application</span><span·class="p">:</span><span·class="nf">load</span><span·class="p"·data-group-id="6360072226-1">(</span><span·class="ss">ch_app</span><span·class="p"·data-group-id="6360072226-1">)</span><span·class="p">.</span><span·class="w"> |
| 308 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 308 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 309 | 2>·</span><span·class="nc">application</span><span·class="p">:</span><span·class="nf">loaded_applications</span><span·class="p"·data-group-id=" | 309 | 2>·</span><span·class="nc">application</span><span·class="p">:</span><span·class="nf">loaded_applications</span><span·class="p"·data-group-id="6360072226-2">(</span><span·class="p"·data-group-id="6360072226-2">)</span><span·class="p">.</span><span·class="w"> |
| 310 | </span><span·class="p"·data-group-id=" | 310 | </span><span·class="p"·data-group-id="6360072226-3">[</span><span·class="p"·data-group-id="6360072226-4">{</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="s">"ERTS··CXC·138·10"</span><span·class="p">,</span><span·class="s">"2.8.1.3"</span><span·clas[·...·truncated·by·diffoscope;·len:·31,·SHA:·a11cd03ebf356a00c715e36155d98c4210ccb75648b1b5224bc773018fc4c752·...·]-4">}</span><span·class="p">,</span><span·class="w"> |
| 311 | ·</span><span·class="p"·data-group-id=" | 311 | ·</span><span·class="p"·data-group-id="6360072226-5">{</span><span·class="ss">stdlib</span><span·class="p">,</span><span·class="s">"ERTS··CXC·138·10"</span><span·class="p">,</span><span·class="s">"1.11.4.3"</span><span·class="p"·data-group-id="6360072226-5">}</span><span·class="p">,</span><span·class="w"> |
| 312 | ·</span><span·class="p"·data-group-id=" | 312 | ·</span><span·class="p"·data-group-id="6360072226-6">{</span><span·class="ss">ch_app</span><span·class="p">,</span><span·class="s">"Channel·allocator"</span><span·class="p">,</span><span·class="s">"1"</span><span·class="p"·data-group-id="6360072226-6">}</span><span·class="p"[·...·truncated·by·diffoscope;·len:·26,·SHA:·756cdd266a9e433c0014c8fb1e95f19dfc20fb5115ba157f64ef5f00c9ab0f53·...·]-3">]</span></code></pre><p>An·application·that·has·been·stopped,·or·has·never·been·started,·can·be |
| 313 | unloaded.·The·information·about·the·application·is·erased·from·the·internal | 313 | unloaded.·The·information·about·the·application·is·erased·from·the·internal |
| 314 | database·of·the·application·controller.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="nc">application</span><span·class="p">:</span><span·class="nf">unload</span><span·class="p"·data-group-id=" | 314 | database·of·the·application·controller.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="nc">application</span><span·class="p">:</span><span·class="nf">unload</span><span·class="p"·data-group-id="4949416556-1">(</span><span·class="ss">ch_app</span><span·class="p"·data-group-id="4949416556-1">)</span><span·class="p">.</span><span·class="w"> |
| 315 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 315 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 316 | 4>·</span><span·class="nc">application</span><span·class="p">:</span><span·class="nf">loaded_applications</span><span·class="p"·data-group-id=" | 316 | 4>·</span><span·class="nc">application</span><span·class="p">:</span><span·class="nf">loaded_applications</span><span·class="p"·data-group-id="4949416556-2">(</span><span·class="p"·data-group-id="4949416556-2">)</span><span·class="p">.</span><span·class="w"> |
| 317 | </span><span·class="p"·data-group-id=" | 317 | </span><span·class="p"·data-group-id="4949416556-3">[</span><span·class="p"·data-group-id="4949416556-4">{</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="s">"ERTS··CXC·138·10"</span><span·class="p">,</span><span·class="s">"2.8.1.3"</span><span·clas[·...·truncated·by·diffoscope;·len:·31,·SHA:·4f3bf3df3675714d4232b2ffa23458561580c37f262830f409d43bdee7987e82·...·]-4">}</span><span·class="p">,</span><span·class="w"> |
| 318 | ·</span><span·class="p"·data-group-id=" | 318 | ·</span><span·class="p"·data-group-id="4949416556-5">{</span><span·class="ss">stdlib</span><span·class="p">,</span><span·class="s">"ERTS··CXC·138·10"</span><span·class="p">,</span><span·class="s">"1.11.4.3"</span><span·class="p"·data-group-id="4949416556-5">}</span><span·cla[·...·truncated·by·diffoscope;·len:·32,·SHA:·bd37eb4adf533f97ee0bd778dde591741d3addb7f0ac875dd02f99899f0333c0·...·]-3">]</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Loading/unloading·an·application·does·not·load/unload·the·code·used·by·the |
| 319 | application.·Code·loading·is·handled·in·the·usual·way·by·the·code·server.</p></section><p><a·href=""·id="stopping"></a></p><h2·id="starting-and-stopping-applications"·class="section-heading"> | 319 | application.·Code·loading·is·handled·in·the·usual·way·by·the·code·server.</p></section><p><a·href=""·id="stopping"></a></p><h2·id="starting-and-stopping-applications"·class="section-heading"> |
| 320 | ··<a·href="#starting-and-stopping-applications"·class="hover-link"> | 320 | ··<a·href="#starting-and-stopping-applications"·class="hover-link"> |
| 321 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 321 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 322 | ··</a> | 322 | ··</a> |
| 323 | ··<span·class="text">Starting·and·Stopping·Applications</span> | 323 | ··<span·class="text">Starting·and·Stopping·Applications</span> |
| 324 | </h2> | 324 | </h2> |
| 325 | <p>An·application·is·started·by·calling:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">5>·</span><span·class="nc">application</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 325 | <p>An·application·is·started·by·calling:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">5>·</span><span·class="nc">application</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="2266508862-1">(</span><span·class="ss">ch_app</span><span·class="p"·data-group-id="2266508862-1">)</span><span·class="p">.</span><span·class="w"> |
| 326 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 326 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 327 | 6>·</span><span·class="nc">application</span><span·class="p">:</span><span·class="nf">which_applications</span><span·class="p"·data-group-id=" | 327 | 6>·</span><span·class="nc">application</span><span·class="p">:</span><span·class="nf">which_applications</span><span·class="p"·data-group-id="2266508862-2">(</span><span·class="p"·data-group-id="2266508862-2">)</span><span·class="p">.</span><span·class="w"> |
| 328 | </span><span·class="p"·data-group-id=" | 328 | </span><span·class="p"·data-group-id="2266508862-3">[</span><span·class="p"·data-group-id="2266508862-4">{</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="s">"ERTS··CXC·138·10"</span><span·class="p">,</span><span·class="s">"2.8.1.3"</span><span·clas[·...·truncated·by·diffoscope;·len:·31,·SHA:·1b40ed3a4e58f8517d36d78b026f0576fd329f442fe8eff0419288382edeb8c0·...·]-4">}</span><span·class="p">,</span><span·class="w"> |
| 329 | ·</span><span·class="p"·data-group-id=" | 329 | ·</span><span·class="p"·data-group-id="2266508862-5">{</span><span·class="ss">stdlib</span><span·class="p">,</span><span·class="s">"ERTS··CXC·138·10"</span><span·class="p">,</span><span·class="s">"1.11.4.3"</span><span·class="p"·data-group-id="2266508862-5">}</span><span·class="p">,</span><span·class="w"> |
| 330 | ·</span><span·class="p"·data-group-id=" | 330 | ·</span><span·class="p"·data-group-id="2266508862-6">{</span><span·class="ss">ch_app</span><span·class="p">,</span><span·class="s">"Channel·allocator"</span><span·class="p">,</span><span·class="s">"1"</span><span·class="p"·data-group-id="2266508862-6">}</span><span·class="p"[·...·truncated·by·diffoscope;·len:·26,·SHA:·15241fbaa7ce122e544f1030df545eb9a4def011d405ae8ee84db52ef429e78d·...·]-3">]</span></code></pre><p>If·the·application·is·not·already·loaded,·the·application·controller·first·loads |
| 331 | it·using·<a·href="../../lib/kernel-10.2.3/doc/html/application.html#load/1"><code·class="inline">application:load/1</code></a>.·It·checks·the·value·of·the·<code·class="inline">applications</code>·key·to | 331 | it·using·<a·href="../../lib/kernel-10.2.3/doc/html/application.html#load/1"><code·class="inline">application:load/1</code></a>.·It·checks·the·value·of·the·<code·class="inline">applications</code>·key·to |
| 332 | ensure·that·all·applications·that·are·to·be·started·before·this·application·are | 332 | ensure·that·all·applications·that·are·to·be·started·before·this·application·are |
| 333 | running.</p><p><a·href=""·id="application_master"></a></p><p>Following·that,·the·application·controller·creates·an·<em>application·master</em>·for | 333 | running.</p><p><a·href=""·id="application_master"></a></p><p>Following·that,·the·application·controller·creates·an·<em>application·master</em>·for |
| 334 | the·application.</p><p>The·application·master·establishes·itself·as·the·<a·href="../../erts-15.2.3/doc/html/erlang.html#group_leader/0">group | 334 | the·application.</p><p>The·application·master·establishes·itself·as·the·<a·href="../../erts-15.2.3/doc/html/erlang.html#group_leader/0">group |
| 335 | leader</a>·of·all·processes·in·the·application | 335 | leader</a>·of·all·processes·in·the·application |
| 336 | and·will·forward·I/O·to·the·previous·group·leader.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>The·purpose·of·the·application·master·being·the·group·leader·is·to·easily | 336 | and·will·forward·I/O·to·the·previous·group·leader.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>The·purpose·of·the·application·master·being·the·group·leader·is·to·easily |
| 337 | keep·track·of·which·processes·that·belong·to·the·application.·That·is·needed | 337 | keep·track·of·which·processes·that·belong·to·the·application.·That·is·needed |
| Offset 347, 55 lines modified | Offset 347, 55 lines modified | ||
| 347 | defined·by·the·<code·class="inline">mod</code>·key.</p><h2·id="configuring-an-application"·class="section-heading"> | 347 | defined·by·the·<code·class="inline">mod</code>·key.</p><h2·id="configuring-an-application"·class="section-heading"> |
| 348 | ··<a·href="#configuring-an-application"·class="hover-link"> | 348 | ··<a·href="#configuring-an-application"·class="hover-link"> |
| 349 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 349 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 350 | ··</a> | 350 | ··</a> |
| 351 | ··<span·class="text">Configuring·an·Application</span> | 351 | ··<span·class="text">Configuring·an·Application</span> |
| 352 | </h2> | 352 | </h2> |
| 353 | <p>An·application·can·be·configured·using·<em>configuration·parameters</em>.·These·are·a | 353 | <p>An·application·can·be·configured·using·<em>configuration·parameters</em>.·These·are·a |
| 354 | list·of·<code·class="inline">{Par,Val}</code>·tuples·specified·by·a·key·<code·class="inline">env</code>·in·the·<code·class="inline">.app</code>·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 354 | list·of·<code·class="inline">{Par,Val}</code>·tuples·specified·by·a·key·<code·class="inline">env</code>·in·the·<code·class="inline">.app</code>·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="3205877097-1">{</span><span·class="ss">application</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ch_app</span><span·class="p">,</span><span·class="w"> |
| 355 | ·</span><span·class="p"·data-group-id=" | 355 | ·</span><span·class="p"·data-group-id="3205877097-2">[</span><span·class="p"·data-group-id="3205877097-3">{</span><span·class="ss">description</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"Channel·allocator"</span><span·class="p"·data-group-id="3205877097-3">}</span><span·class="p">,</span><span·class="w"> |
| 356 | ··</span><span·class="p"·data-group-id=" | 356 | ··</span><span·class="p"·data-group-id="3205877097-4">{</span><span·class="ss">vsn</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"1"</span><span·class="p"·data-group-id="3205877097-4">}</span><span·class="p">,</span><span·class="w"> |
| 357 | ··</span><span·class="p"·data-group-id=" | 357 | ··</span><span·class="p"·data-group-id="3205877097-5">{</span><span·class="ss">modules</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3205877097-6">[</span><span·class="ss">ch_app</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ch_sup<[·...·truncated·by·diffoscope;·len:·175,·SHA:·b0d66cb6becf3d2b8d2e7d21a75aea9a6aef570faf2bf92cfc82cca50d213e70·...·]-5">}</span><span·class="p">,</span><span·class="w"> |
| 358 | ··</span><span·class="p"·data-group-id=" | 358 | ··</span><span·class="p"·data-group-id="3205877097-7">{</span><span·class="ss">registered</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3205877097-8">[</span><span·class="ss">ch3</span><span·class="p"·data-group-id="3205877097-8">]</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·22,·SHA:·9f8eee2d39de525102b1ca453d9e64074c56111c56fff6f7fd640a75b76d146a·...·]-7">}</span><span·class="p">,</span><span·class="w"> |
| 359 | ··</span><span·class="p"·data-group-id=" | 359 | ··</span><span·class="p"·data-group-id="3205877097-9">{</span><span·class="ss">applications</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3205877097-10">[</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">s[·...·truncated·by·diffoscope;·len:·183,·SHA:·680091ca2ba2b780a50d5b1b2288acf0e7c1f0b727c4dc1e419940a6e58e3342·...·]-9">}</span><span·class="p">,</span><span·class="w"> |
| 360 | ··</span><span·class="p"·data-group-id=" | 360 | ··</span><span·class="p"·data-group-id="3205877097-11">{</span><span·class="ss">mod</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3205877097-12">{</span><span·class="ss">ch_app</span><span·class="p">,</span><span·class="p"·data-group-id="3205877097-13">[</s[·...·truncated·by·diffoscope;·len:·153,·SHA:·8a3ead346dda811207e5af7f639a601d5a13905c91ed3fc23c68d71144b0bed4·...·]-11">}</span><span·class="p">,</span><span·class="w"> |
| 361 | ··</span><span·class="p"·data-group-id=" | 361 | ··</span><span·class="p"·data-group-id="3205877097-14">{</span><span·class="ss">env</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3205877097-15">[</span><span·class="p"·data-group-id="3205877097-16">{</span><span·class="ss">file</span><span·class="p">,</spa[·...·truncated·by·diffoscope;·len:·224,·SHA:·26f42bb8e571a1bad7513c57e4e32710983a01200c8d90898ddfdfcd8aeb3508·...·]-14">}</span><span·class="w"> |
| 362 | ·</span><span·class="p"·data-group-id=" | 362 | ·</span><span·class="p"·data-group-id="3205877097-2">]</span><span·class="p"·data-group-id="3205877097-1">}</span><span·class="p">.</span></code></pre><p><code·class="inline">Par</code>·is·to·be·an·atom.·<code·class="inline">Val</code>·is·any·term.·The·application·can·retrieve·the |
| 363 | value·of·a·configuration·parameter·by·calling·<code·class="inline">application:get_env(App,·Par)</code>·or | 363 | value·of·a·configuration·parameter·by·calling·<code·class="inline">application:get_env(App,·Par)</code>·or |
| 364 | a·number·of·similar·functions.·For·more·information,·see·module·<a·href="../../lib/kernel-10.2.3/doc/html/application.html"><code·class="inline">application</code></a> | 364 | a·number·of·similar·functions.·For·more·information,·see·module·<a·href="../../lib/kernel-10.2.3/doc/html/application.html"><code·class="inline">application</code></a> |
| 365 | in·Kernel.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl</span><span·class="w"> | 365 | in·Kernel.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl</span><span·class="w"> |
| 366 | </span><span·class="n">Erlang</span><span·class="w">·</span><span·class="p"·data-group-id=" | 366 | </span><span·class="n">Erlang</span><span·class="w">·</span><span·class="p"·data-group-id="2516850240-1">(</span><span·class="n">BEAM</span><span·class="p"·data-group-id="2516850240-1">)</span><span·class="w">·</span><span·class="ss">emulator</span><span·class="w">·</span><span·class="ss">version</span><span·class="w">·</span><span·class="mf">5.[·...·truncated·by·diffoscope;·len:·415,·SHA:·b7fa039a71bd0629ee7b1a043c3fa16734e63ced34034600c20cd4ea74ae3359·...·]-3">]</span><span·class="w"> |
| 367 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V5</span><span·class="p">.</span><span·class="mf">2.3</span><span·class="p">.</span><span·class="mi">6</span><span·class="w">··</span><span·class="p"·data-group-id=" | 367 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V5</span><span·class="p">.</span><span·class="mf">2.3</span><span·class="p">.</span><span·class="mi">6</span><span·class="w">··</span><span·class="p"·data-group-id="2516850240-4">(</span><span·class="ss">abort</span><span·class="w">·</span><span·class="ss">with</span><span·class="w">·</span><span·class="err">^</span><span·class="n">G</span><span·class="p"·data-group-id="2516850240-4">)</span><span·class="gp·unselectable"> |
| 368 | 1>·</span><span·class="nc">application</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 368 | 1>·</span><span·class="nc">application</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="2516850240-5">(</span><span·class="ss">ch_app</span><span·class="p"·data-group-id="2516850240-5">)</span><span·class="p">.</span><span·class="w"> |
| 369 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 369 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 370 | 2>·</span><span·class="nc">application</span><span·class="p">:</span><span·class="nf">get_env</span><span·class="p"·data-group-id=" | 370 | 2>·</span><span·class="nc">application</span><span·class="p">:</span><span·class="nf">get_env</span><span·class="p"·data-group-id="2516850240-6">(</span><span·class="ss">ch_app</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">file</span><span·class="p"·data-group-id="2516850240-6">)</span><span·class="p">.</span><span·class="w"> |
| 371 | </span><span·class="p"·data-group-id=" | 371 | </span><span·class="p"·data-group-id="2516850240-7">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="s">"/usr/local/log"</span><span·class="p"·data-group-id="2516850240-7">}</span></code></pre><p>The·values·in·the·<code·class="inline">.app</code>·file·can·be·overridden·by·values·in·a·<em>system |
| 372 | configuration·file</em>.·This·is·a·file·that·contains·configuration·parameters·for | 372 | configuration·file</em>.·This·is·a·file·that·contains·configuration·parameters·for |
| 373 | relevant·applications:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="2 | 373 | relevant·applications:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="2180287036-1">[</span><span·class="p"·data-group-id="2180287036-2">{</span><span·class="n">Application1</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2180287036-3">[</span><span·class="p"·data-group-id="2180287036-4">{[·...·truncated·by·diffoscope;·len:·330,·SHA:·3d2edc4b9a893459e15101d3f3acd35666e4c54625bbe61d0d4265dad4838e1d·...·]-2">}</span><span·class="p">,</span><span·class="w"> |
| 374 | ·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">,</span><span·class="w"> | 374 | ·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">,</span><span·class="w"> |
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| 120 | ··<a·href="#changing-a-functional-module"·class="hover-link"> | 120 | ··<a·href="#changing-a-functional-module"·class="hover-link"> |
| 121 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 121 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 122 | ··</a> | 122 | ··</a> |
| 123 | ··<span·class="text">Changing·a·Functional·Module</span> | 123 | ··<span·class="text">Changing·a·Functional·Module</span> |
| 124 | </h2> | 124 | </h2> |
| 125 | <p>When·a·functional·module·has·been·changed,·for·example,·if·a·new·function·has | 125 | <p>When·a·functional·module·has·been·changed,·for·example,·if·a·new·function·has |
| 126 | been·added·or·a·bug·has·been·corrected,·simple·code·replacement·is·sufficient, | 126 | been·added·or·a·bug·has·been·corrected,·simple·code·replacement·is·sufficient, |
| 127 | for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="215 | 127 | for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="2715636383-1">{</span><span·class="s">"2"</span><span·class="p">,</span><span·class="w"> |
| 128 | ·</span><span·class="p"·data-group-id="215 | 128 | ·</span><span·class="p"·data-group-id="2715636383-2">[</span><span·class="p"·data-group-id="2715636383-3">{</span><span·class="s">"1"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2715636383-4">[</span><span·class="p"·data-group-id="2715636383-5">[·...·truncated·by·diffoscope;·len:·316,·SHA:·902e1dc28d75e851693cf4b6fca662f2b86f23db72e7f38fc2811b312c947d6a·...·]-2">]</span><span·class="p">,</span><span·class="w"> |
| 129 | ·</span><span·class="p"·data-group-id="215 | 129 | ·</span><span·class="p"·data-group-id="2715636383-6">[</span><span·class="p"·data-group-id="2715636383-7">{</span><span·class="s">"1"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2715636383-8">[</span><span·class="p"·data-group-id="2715636383-9">[·...·truncated·by·diffoscope;·len:·316,·SHA:·4ebf5c7e76a4d3b0513d722a7aab46359763ef49726feaaa4b17afda68fff9f4·...·]-6">]</span><span·class="w"> |
| 130 | </span><span·class="p"·data-group-id="215 | 130 | </span><span·class="p"·data-group-id="2715636383-1">}</span><span·class="p">.</span></code></pre><h2·id="changing-a-residence-module"·class="section-heading"> |
| 131 | ··<a·href="#changing-a-residence-module"·class="hover-link"> | 131 | ··<a·href="#changing-a-residence-module"·class="hover-link"> |
| 132 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 132 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 133 | ··</a> | 133 | ··</a> |
| 134 | ··<span·class="text">Changing·a·Residence·Module</span> | 134 | ··<span·class="text">Changing·a·Residence·Module</span> |
| 135 | </h2> | 135 | </h2> |
| 136 | <p>In·a·system·implemented·according·to·the·OTP·design·principles,·all·processes, | 136 | <p>In·a·system·implemented·according·to·the·OTP·design·principles,·all·processes, |
| 137 | except·system·processes·and·special·processes,·reside·in·one·of·the·behaviours | 137 | except·system·processes·and·special·processes,·reside·in·one·of·the·behaviours |
| Offset 142, 46 lines modified | Offset 142, 46 lines modified | ||
| 142 | ··<a·href="#changing-a-callback-module"·class="hover-link"> | 142 | ··<a·href="#changing-a-callback-module"·class="hover-link"> |
| 143 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 143 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 144 | ··</a> | 144 | ··</a> |
| 145 | ··<span·class="text">Changing·a·Callback·Module</span> | 145 | ··<span·class="text">Changing·a·Callback·Module</span> |
| 146 | </h2> | 146 | </h2> |
| 147 | <p>A·callback·module·is·a·functional·module,·and·for·code·extensions·simple·code | 147 | <p>A·callback·module·is·a·functional·module,·and·for·code·extensions·simple·code |
| 148 | replacement·is·sufficient.</p><p><em>Example</em></p><p>When·adding·a·function·to·<code·class="inline">ch3</code>,·as·described·in·the·example·in | 148 | replacement·is·sufficient.</p><p><em>Example</em></p><p>When·adding·a·function·to·<code·class="inline">ch3</code>,·as·described·in·the·example·in |
| 149 | <a·href="release_handling.html#appup">Release·Handling</a>,·<code·class="inline">ch_app.appup</code>·looks·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 149 | <a·href="release_handling.html#appup">Release·Handling</a>,·<code·class="inline">ch_app.appup</code>·looks·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="2153440644-1">{</span><span·class="s">"2"</span><span·class="p">,</span><span·class="w"> |
| 150 | ·</span><span·class="p"·data-group-id=" | 150 | ·</span><span·class="p"·data-group-id="2153440644-2">[</span><span·class="p"·data-group-id="2153440644-3">{</span><span·class="s">"1"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2153440644-4">[</span><span·class="p"·data-group-id="2153440644-5"[·...·truncated·by·diffoscope;·len:·319,·SHA:·f9d1df0d1df1065b8f5f676acebc2fa1382407170f2375aeb19d01b5fb685590·...·]-2">]</span><span·class="p">,</span><span·class="w"> |
| 151 | ·</span><span·class="p"·data-group-id=" | 151 | ·</span><span·class="p"·data-group-id="2153440644-6">[</span><span·class="p"·data-group-id="2153440644-7">{</span><span·class="s">"1"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2153440644-8">[</span><span·class="p"·data-group-id="2153440644-9"[·...·truncated·by·diffoscope;·len:·319,·SHA:·1f5ad0c53ff5b10980e466e75bd84670e63d31e59cee72490893261629dff1de·...·]-6">]</span><span·class="w"> |
| 152 | </span><span·class="p"·data-group-id=" | 152 | </span><span·class="p"·data-group-id="2153440644-1">}</span><span·class="p">.</span></code></pre><p>OTP·also·supports·changing·the·internal·state·of·behaviour·processes;·see |
| 153 | <a·href="appup_cookbook.html#int_state">Changing·Internal·State</a>.</p><p><a·href=""·id="int_state"></a></p><h2·id="changing-internal-state"·class="section-heading"> | 153 | <a·href="appup_cookbook.html#int_state">Changing·Internal·State</a>.</p><p><a·href=""·id="int_state"></a></p><h2·id="changing-internal-state"·class="section-heading"> |
| 154 | ··<a·href="#changing-internal-state"·class="hover-link"> | 154 | ··<a·href="#changing-internal-state"·class="hover-link"> |
| 155 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 155 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 156 | ··</a> | 156 | ··</a> |
| 157 | ··<span·class="text">Changing·Internal·State</span> | 157 | ··<span·class="text">Changing·Internal·State</span> |
| 158 | </h2> | 158 | </h2> |
| 159 | <p>In·this·case,·simple·code·replacement·is·not·sufficient.·The·process·must | 159 | <p>In·this·case,·simple·code·replacement·is·not·sufficient.·The·process·must |
| 160 | explicitly·transform·its·state·using·the·callback·function·<code·class="inline">code_change/3</code>·before | 160 | explicitly·transform·its·state·using·the·callback·function·<code·class="inline">code_change/3</code>·before |
| 161 | switching·to·the·new·version·of·the·callback·module.·Thus,·synchronized·code | 161 | switching·to·the·new·version·of·the·callback·module.·Thus,·synchronized·code |
| 162 | replacement·is·used.</p><p><em>Example</em></p><p>Consider·the·<code·class="inline">ch3</code>·module·from | 162 | replacement·is·used.</p><p><em>Example</em></p><p>Consider·the·<code·class="inline">ch3</code>·module·from |
| 163 | <a·href="gen_server_concepts.html#ex">gen_server·Behaviour</a>.·The·internal·state·is·a·term | 163 | <a·href="gen_server_concepts.html#ex">gen_server·Behaviour</a>.·The·internal·state·is·a·term |
| 164 | <code·class="inline">Chs</code>·representing·the·available·channels.·Assume·you·want·to·add·a·counter·<code·class="inline">N</code>, | 164 | <code·class="inline">Chs</code>·representing·the·available·channels.·Assume·you·want·to·add·a·counter·<code·class="inline">N</code>, |
| 165 | which·keeps·track·of·the·number·of·<code·class="inline">alloc</code>·requests·so·far.·This·means·that·the | 165 | which·keeps·track·of·the·number·of·<code·class="inline">alloc</code>·requests·so·far.·This·means·that·the |
| 166 | format·must·be·changed·to·<code·class="inline">{Chs,N}</code>.</p><p>The·<code·class="inline">.appup</code>·file·can·look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 166 | format·must·be·changed·to·<code·class="inline">{Chs,N}</code>.</p><p>The·<code·class="inline">.appup</code>·file·can·look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8259540562-1">{</span><span·class="s">"2"</span><span·class="p">,</span><span·class="w"> |
| 167 | ·</span><span·class="p"·data-group-id="3866327112-2">[</span><span·class="p"·data-group-id="3866327112-3">{</span><span·class="s">"1"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3866327112-4">[</span><span·class="p"·data-group-id="3866327112-5">{</span><span·class="ss">update</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ch3</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3866327112-6">{</span><span·class="ss">advanced</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3866327112-7">[</span><span·class="p"·data-group-id="3866327112-7">]</span><span·class="p"·data-group-id="3866327112-6">}</span><span·class="p"·data-group-id="3866327112-5">}</span><span·class="p"·data-group-id="3866327112-4">]</span><span·class="p"·data-group-id="3866327112-3">}</span><span·class="p"·data-group-id="3866327112-2">]</span><span·class="p">,</span><span·class="w"> | ||
| 168 | ·</span><span·class="p"·data-group-id=" | 167 | ·</span><span·class="p"·data-group-id="8259540562-2">[</span><span·class="p"·data-group-id="8259540562-3">{</span><span·class="s">"1"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8259540562-4">[</span><span·class="p"·data-group-id="8259540562-5"[·...·truncated·by·diffoscope;·len:·683,·SHA:·2883c9af23b897b047d571968292799265ead88a8c8a2bccdeac84c4e81956b3·...·]</span><span·class="w"> |
| 168 | ·</span><span·class="p"·data-group-id="8259540562-8">[</span><span·class="p"·data-group-id="8259540562-9">{</span><span·class="s">"1"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8259540562-10">[</span><span·class="p"·data-group-id="8259540562-11">{</span><span·class="ss">update</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ch3</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8259540562-12">{</span><span·class="ss">advanced</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8259540562-13">[</span><span·class="p"·data-group-id="8259540562-13">]</span><span·class="p"·data-group-id="8259540562-12">}</span><span·class="p"·data-group-id="8259540562-11">}</span><span·class="p"·data-group-id="8259540562-10">]</span><span·class="p"·data-group-id="8259540562-9">}</span><span·class="p"·data-group-id="8259540562-8">]</span><span·class="w"> | ||
| 169 | </span><span·class="p"·data-group-id=" | 169 | </span><span·class="p"·data-group-id="8259540562-1">}</span><span·class="p">.</span></code></pre><p>The·third·element·of·the·<code·class="inline">update</code>·instruction·is·a·tuple·<code·class="inline">{advanced,Extra}</code>, |
| 170 | which·says·that·the·affected·processes·are·to·do·a·state·transformation·before | 170 | which·says·that·the·affected·processes·are·to·do·a·state·transformation·before |
| 171 | loading·the·new·version·of·the·module.·This·is·done·by·the·processes·calling·the | 171 | loading·the·new·version·of·the·module.·This·is·done·by·the·processes·calling·the |
| 172 | callback·function·<code·class="inline">code_change/3</code>·(see·<a·href="../../lib/stdlib-6.2.1/doc/html/gen_server.html"><code·class="inline">gen_server</code></a>·in·STDLIB). | 172 | callback·function·<code·class="inline">code_change/3</code>·(see·<a·href="../../lib/stdlib-6.2.1/doc/html/gen_server.html"><code·class="inline">gen_server</code></a>·in·STDLIB). |
| 173 | The·term·<code·class="inline">Extra</code>,·in·this·case·<code·class="inline">[]</code>,·is·passed·as·is·to·the·function:</p><p><a·href=""·id="code_change"></a></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 173 | The·term·<code·class="inline">Extra</code>,·in·this·case·<code·class="inline">[]</code>,·is·passed·as·is·to·the·function:</p><p><a·href=""·id="code_change"></a></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="2621152445-1">(</span><span·class="ss">ch3</span><span·class="p"·data-group-id="2621152445-1">)</span><span·class="p">.</span><span·class="w"> |
| 174 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 174 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 175 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 175 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="2621152445-2">(</span><span·class="p"·data-group-id="2621152445-3">[</span><span·class="ss">code_change</span><span·class="p">/</span><span·class="mi">3</span><span·class="p"·data-group-id="2621152445-3">]</span><span·class="p"·data-group-id="2621152445-2">)</span><span·class="p">.</span><span·class="w"> |
| 176 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 176 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 177 | </span><span·class="nf">code_change</span><span·class="p"·data-group-id=" | 177 | </span><span·class="nf">code_change</span><span·class="p"·data-group-id="2621152445-4">(</span><span·class="p"·data-group-id="2621152445-5">{</span><span·class="ss">down</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">Vsn</span><span·class="p"·data-group-id="2621152445-5">}</span><s[·...·truncated·by·diffoscope;·len:·391,·SHA:·4898e911049abe2234de9d194a6f78fce1f8f965cd05c5440d6cca3d5b9d4a23·...·]-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 178 | ····</span><span·class="p"·data-group-id=" | 178 | ····</span><span·class="p"·data-group-id="2621152445-7">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Chs</span><span·class="p"·data-group-id="2621152445-7">}</span><span·class="p">;</span><span·class="w"> |
| 179 | </span><span·class="nf">code_change</span><span·class="p"·data-group-id=" | 179 | </span><span·class="nf">code_change</span><span·class="p"·data-group-id="2621152445-8">(</span><span·class="p">_</span><span·class="n">Vsn</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Chs</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">Extra</span><span·clas[·...·truncated·by·diffoscope;·len:·31,·SHA:·9042de9c2468add4f528d53ea3fc14ded657f077cc707e2f8ead91a86bdf9201·...·]-8">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 180 | ····</span><span·class="p"·data-group-id=" | 180 | ····</span><span·class="p"·data-group-id="2621152445-9">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2621152445-10">{</span><span·class="n">Chs</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">0</span><span·c[·...·truncated·by·diffoscope;·len:·88,·SHA:·41091305b20c6e82f45ee8017c34d15c7efb5cdaa6ad83419a64c780e2e6261b·...·]-9">}</span><span·class="p">.</span></code></pre><p>The·first·argument·is·<code·class="inline">{down,Vsn}</code>·if·there·is·a·downgrade,·or·<code·class="inline">Vsn</code>·if·there·is |
| 181 | a·upgrade.·The·term·<code·class="inline">Vsn</code>·is·fetched·from·the·'original'·version·of·the·module, | 181 | a·upgrade.·The·term·<code·class="inline">Vsn</code>·is·fetched·from·the·'original'·version·of·the·module, |
| 182 | that·is,·the·version·you·are·upgrading·from,·or·downgrading·to.</p><p>The·version·is·defined·by·the·module·attribute·<code·class="inline">vsn</code>,·if·any.·There·is·no·such | 182 | that·is,·the·version·you·are·upgrading·from,·or·downgrading·to.</p><p>The·version·is·defined·by·the·module·attribute·<code·class="inline">vsn</code>,·if·any.·There·is·no·such |
| 183 | attribute·in·<code·class="inline">ch3</code>,·so·in·this·case·the·version·is·the·checksum·(a·huge·integer) | 183 | attribute·in·<code·class="inline">ch3</code>,·so·in·this·case·the·version·is·the·checksum·(a·huge·integer) |
| 184 | of·the·beam·file,·an·uninteresting·value,·which·is·ignored.</p><p>The·other·callback·functions·of·<code·class="inline">ch3</code>·must·also·be·modified·and·perhaps·a·new | 184 | of·the·beam·file,·an·uninteresting·value,·which·is·ignored.</p><p>The·other·callback·functions·of·<code·class="inline">ch3</code>·must·also·be·modified·and·perhaps·a·new |
| 185 | interface·function·must·be·added,·but·this·is·not·shown·here.</p><h2·id="module-dependencies"·class="section-heading"> | 185 | interface·function·must·be·added,·but·this·is·not·shown·here.</p><h2·id="module-dependencies"·class="section-heading"> |
| 186 | ··<a·href="#module-dependencies"·class="hover-link"> | 186 | ··<a·href="#module-dependencies"·class="hover-link"> |
| 187 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 187 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 190, 67 lines modified | Offset 190, 67 lines modified | ||
| 190 | </h2> | 190 | </h2> |
| 191 | <p>Assume·that·a·module·is·extended·by·adding·an·interface·function,·as·in·the | 191 | <p>Assume·that·a·module·is·extended·by·adding·an·interface·function,·as·in·the |
| 192 | example·in·<a·href="release_handling.html#appup">Release·Handling</a>,·where·a·function | 192 | example·in·<a·href="release_handling.html#appup">Release·Handling</a>,·where·a·function |
| 193 | <code·class="inline">available/0</code>·is·added·to·<code·class="inline">ch3</code>.</p><p>If·a·call·is·added·to·this·function,·say·in·module·<code·class="inline">m1</code>,·a·runtime·error·could | 193 | <code·class="inline">available/0</code>·is·added·to·<code·class="inline">ch3</code>.</p><p>If·a·call·is·added·to·this·function,·say·in·module·<code·class="inline">m1</code>,·a·runtime·error·could |
| 194 | can·occur·during·release·upgrade·if·the·new·version·of·<code·class="inline">m1</code>·is·loaded·first·and | 194 | can·occur·during·release·upgrade·if·the·new·version·of·<code·class="inline">m1</code>·is·loaded·first·and |
| 195 | calls·<code·class="inline">ch3:available/0</code>·before·the·new·version·of·<code·class="inline">ch3</code>·is·loaded.</p><p>Thus,·<code·class="inline">ch3</code>·must·be·loaded·before·<code·class="inline">m1</code>,·in·the·upgrade·case,·and·conversely·in | 195 | calls·<code·class="inline">ch3:available/0</code>·before·the·new·version·of·<code·class="inline">ch3</code>·is·loaded.</p><p>Thus,·<code·class="inline">ch3</code>·must·be·loaded·before·<code·class="inline">m1</code>,·in·the·upgrade·case,·and·conversely·in |
| 196 | the·downgrade·case.·<code·class="inline">m1</code>·is·said·to·be·<em>dependent·on</em>·<code·class="inline">ch3</code>.·In·a·release | 196 | the·downgrade·case.·<code·class="inline">m1</code>·is·said·to·be·<em>dependent·on</em>·<code·class="inline">ch3</code>.·In·a·release |
| 197 | handling·instruction,·this·is·expressed·by·the·<code·class="inline">DepMods</code>·element:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 197 | handling·instruction,·this·is·expressed·by·the·<code·class="inline">DepMods</code>·element:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="6916920932-1">{</span><span·class="nb">load_module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">DepMods</span><span·class="p"·data-group-id="6916920932-1">}</span><span·class="w"> |
| 198 | </span><span·class="p"·data-group-id=" | 198 | </span><span·class="p"·data-group-id="6916920932-2">{</span><span·class="ss">update</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Module</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6916920932-3">{</span><span·class="ss">advanced<[·...·truncated·by·diffoscope;·len:·254,·SHA:·bac453d376ce4f24161e19054df1274b1892c89ede14b55c8d3a82e7d2d41755·...·]-2">}</span></code></pre><p><code·class="inline">DepMods</code>·is·a·list·of·modules,·on·which·<code·class="inline">Module</code>·is·dependent.</p><p><em>Example</em></p><p>The·module·<code·class="inline">m1</code>·in·application·<code·class="inline">myapp</code>·is·dependent·on·<code·class="inline">ch3</code>·when |
| 199 | upgrading·from·"1"·to·"2",·or·downgrading·from·"2"·to·"1":</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">myapp</span><span·class="p">.</span><span·class="nc">appup</span><span·class="p">:</span><span·class="w"> | 199 | upgrading·from·"1"·to·"2",·or·downgrading·from·"2"·to·"1":</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">myapp</span><span·class="p">.</span><span·class="nc">appup</span><span·class="p">:</span><span·class="w"> |
| 200 | </span><span·class="p"·data-group-id="3 | 200 | </span><span·class="p"·data-group-id="3478352393-1">{</span><span·class="s">"2"</span><span·class="p">,</span><span·class="w"> |
| 201 | ·</span><span·class="p"·data-group-id="3 | 201 | ·</span><span·class="p"·data-group-id="3478352393-2">[</span><span·class="p"·data-group-id="3478352393-3">{</span><span·class="s">"1"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3478352393-4">[</span><span·class="p"·data-group-id="3478352393-5">[·...·truncated·by·diffoscope;·len:·498,·SHA:·ad452c88cf308071c22d03bc8081cd7b8aea73f10cf1a9152a84db9f8c90e3d6·...·]-2">]</span><span·class="p">,</span><span·class="w"> |
| 202 | ·</span><span·class="p"·data-group-id="3 | 202 | ·</span><span·class="p"·data-group-id="3478352393-7">[</span><span·class="p"·data-group-id="3478352393-8">{</span><span·class="s">"1"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3478352393-9">[</span><span·class="p"·data-group-id="3478352393-10"[·...·truncated·by·diffoscope;·len:·502,·SHA:·fb2edf607d0d10a3c24dac5236e53adc75c99327c1666aeae329871d54648745·...·]-7">]</span><span·class="w"> |
| 203 | </span><span·class="p"·data-group-id="3 | 203 | </span><span·class="p"·data-group-id="3478352393-1">}</span><span·class="p">.</span><span·class="w"> |
| 204 | </span><span·class="ss">ch_app</span><span·class="p">.</span><span·class="nc">appup</span><span·class="p">:</span><span·class="w"> | 204 | </span><span·class="ss">ch_app</span><span·class="p">.</span><span·class="nc">appup</span><span·class="p">:</span><span·class="w"> |
| 205 | </span><span·class="p"·data-group-id="3 | 205 | </span><span·class="p"·data-group-id="3478352393-12">{</span><span·class="s">"2"</span><span·class="p">,</span><span·class="w"> |
| 206 | ·</span><span·class="p"·data-group-id="3 | 206 | ·</span><span·class="p"·data-group-id="3478352393-13">[</span><span·class="p"·data-group-id="3478352393-14">{</span><span·class="s">"1"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3478352393-15">[</span><span·class="p"·data-group-id="3478352393-[·...·truncated·by·diffoscope;·len:·325,·SHA:·d68fe48215ecca534a5f2e52fbdc003eeacd4af4fe94f1bb14be27d76730f329·...·]-13">]</span><span·class="p">,</span><span·class="w"> |
| 207 | ·</span><span·class="p"·data-group-id="3 | 207 | ·</span><span·class="p"·data-group-id="3478352393-17">[</span><span·class="p"·data-group-id="3478352393-18">{</span><span·class="s">"1"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3478352393-19">[</span><span·class="p"·data-group-id="3478352393-[·...·truncated·by·diffoscope;·len:·325,·SHA:·6bcbd227dfa38327e7d38eaf9a8edc7686ebbb31f00d74229a29590abbbf676f·...·]-17">]</span><span·class="w"> |
| 208 | </span><span·class="p"·data-group-id="3 | 208 | </span><span·class="p"·data-group-id="3478352393-12">}</span><span·class="p">.</span></code></pre><p>If·instead·<code·class="inline">m1</code>·and·<code·class="inline">ch3</code>·belong·to·the·same·application,·the·<code·class="inline">.appup</code>·file·can |
| 209 | look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 209 | look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="0862508498-1">{</span><span·class="s">"2"</span><span·class="p">,</span><span·class="w"> |
| 210 | ·</span><span·class="p"·data-group-id=" | 210 | ·</span><span·class="p"·data-group-id="0862508498-2">[</span><span·class="p"·data-group-id="0862508498-3">{</span><span·class="s">"1"</span><span·class="p">,</span><span·class="w"> |
| 211 | ···</span><span·class="p"·data-group-id=" | 211 | ···</span><span·class="p"·data-group-id="0862508498-4">[</span><span·class="p"·data-group-id="0862508498-5">{</span><span·class="nb">load_module</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ch3</span><span·class="p"·data-group-id="0862508498-5">}</span><span·class="p">,</span><span·class="w"> |
| 212 | ····</span><span·class="p"·data-group-id=" | 212 | ····</span><span·class="p"·data-group-id="0862508498-6">{</span><span·class="nb">load_module</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">m1</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0862508498-7">[</span><span·class="ss">ch3</sp[·...·truncated·by·diffoscope;·len:·256,·SHA:·aa150d49af001c33c8a4162cf82b6422e89bc0210d3c4fb0fc6a6a1037d9d289·...·]-2">]</span><span·class="p">,</span><span·class="w"> |
| 213 | ·</span><span·class="p"·data-group-id=" | 213 | ·</span><span·class="p"·data-group-id="0862508498-8">[</span><span·class="p"·data-group-id="0862508498-9">{</span><span·class="s">"1"</span><span·class="p">,</span><span·class="w"> |
| 214 | ···</span><span·class="p"·data-group-id=" | 214 | ···</span><span·class="p"·data-group-id="0862508498-10">[</span><span·class="p"·data-group-id="0862508498-11">{</span><span·class="nb">load_module</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ch3</span><span·class="p"·data-group-id="0862508498-11">}</span><span·class="p">,</span><span·class="w"> |
| 215 | ····</span><span·class="p"·data-group-id=" | 215 | ····</span><span·class="p"·data-group-id="0862508498-12">{</span><span·class="nb">load_module</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">m1</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0862508498-13">[</span><span·class="ss">ch3</[·...·truncated·by·diffoscope;·len:·261,·SHA:·770896418f4160e08e8a438bb35e16714deeb7ae8f1dae82b8402b824a873302·...·]-8">]</span><span·class="w"> |
| 216 | </span><span·class="p"·data-group-id=" | 216 | </span><span·class="p"·data-group-id="0862508498-1">}</span><span·class="p">.</span></code></pre><p><code·class="inline">m1</code>·is·dependent·on·<code·class="inline">ch3</code>·also·when·downgrading.·<code·class="inline">systools</code>·knows·the |
| 217 | difference·between·up-·and·downgrading·and·generates·a·correct·<code·class="inline">relup</code>,·where | 217 | difference·between·up-·and·downgrading·and·generates·a·correct·<code·class="inline">relup</code>,·where |
| 218 | <code·class="inline">ch3</code>·is·loaded·before·<code·class="inline">m1</code>·when·upgrading,·but·<code·class="inline">m1</code>·is·loaded·before·<code·class="inline">ch3</code>·when | 218 | <code·class="inline">ch3</code>·is·loaded·before·<code·class="inline">m1</code>·when·upgrading,·but·<code·class="inline">m1</code>·is·loaded·before·<code·class="inline">ch3</code>·when |
| 219 | downgrading.</p><p><a·href=""·id="spec"></a></p><h2·id="changing-code-for-a-special-process"·class="section-heading"> | 219 | downgrading.</p><p><a·href=""·id="spec"></a></p><h2·id="changing-code-for-a-special-process"·class="section-heading"> |
| 220 | ··<a·href="#changing-code-for-a-special-process"·class="hover-link"> | 220 | ··<a·href="#changing-code-for-a-special-process"·class="hover-link"> |
| 221 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 221 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 222 | ··</a> | 222 | ··</a> |
| 223 | ··<span·class="text">Changing·Code·for·a·Special·Process</span> | 223 | ··<span·class="text">Changing·Code·for·a·Special·Process</span> |
| 224 | </h2> | 224 | </h2> |
| 225 | <p>In·this·case,·simple·code·replacement·is·not·sufficient.·When·a·new·version·of·a | 225 | <p>In·this·case,·simple·code·replacement·is·not·sufficient.·When·a·new·version·of·a |
| 226 | residence·module·for·a·special·process·is·loaded,·the·process·must·make·a·fully | 226 | residence·module·for·a·special·process·is·loaded,·the·process·must·make·a·fully |
| 227 | qualified·call·to·its·loop·function·to·switch·to·the·new·code.·Thus, | 227 | qualified·call·to·its·loop·function·to·switch·to·the·new·code.·Thus, |
| 228 | synchronized·code·replacement·must·be·used.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>The·name(s)·of·the·user-defined·residence·module(s)·must·be·listed·in·the | 228 | synchronized·code·replacement·must·be·used.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>The·name(s)·of·the·user-defined·residence·module(s)·must·be·listed·in·the |
| 229 | <code·class="inline">Modules</code>·part·of·the·child·specification·for·the·special·process.·Otherwise | 229 | <code·class="inline">Modules</code>·part·of·the·child·specification·for·the·special·process.·Otherwise |
| 230 | the·release·handler·cannot·find·the·process.</p></section><p><em>Example</em></p><p>Consider·the·example·<code·class="inline">ch4</code>·in·<a·href="spec_proc.html#ex">sys·and·proc_lib</a>. | 230 | the·release·handler·cannot·find·the·process.</p></section><p><em>Example</em></p><p>Consider·the·example·<code·class="inline">ch4</code>·in·<a·href="spec_proc.html#ex">sys·and·proc_lib</a>. |
| 231 | When·started·by·a·supervisor,·the·child·specification·can·look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 231 | When·started·by·a·supervisor,·the·child·specification·can·look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="2608904418-1">{</span><span·class="ss">ch4</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2608904418-2">{</span><span·class="ss">ch4</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">start_link</sp[·...·truncated·by·diffoscope;·len:·198,·SHA:·273150bbc97176a2faac64f717d59b1cfbb93fadd5226bdd21be7666842c5d2f·...·]-2">}</span><span·class="p">,</span><span·class="w"> |
| 232 | ·</span><span·class="ss">permanent</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">brutal_kill</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">worker</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id=" | 232 | ·</span><span·class="ss">permanent</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">brutal_kill</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">worker</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2608904418-4">[</span><span·class="ss">ch4</span><span·class="p"·data-group-id="2608904418-4">]</span><span·class="p"·data-group-id="2608904418-1">}</span></code></pre><p>If·<code·class="inline">ch4</code>·is·part·of·the·application·<code·class="inline">sp_app</code>·and·a·new·version·of·the·module·is |
| 233 | to·be·loaded·when·upgrading·from·version·"1"·to·"2"·of·this·application, | 233 | to·be·loaded·when·upgrading·from·version·"1"·to·"2"·of·this·application, |
| 234 | <code·class="inline">sp_app.appup</code>·can·look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 234 | <code·class="inline">sp_app.appup</code>·can·look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="6975483945-1">{</span><span·class="s">"2"</span><span·class="p">,</span><span·class="w"> |
| 235 | ·</span><span·class="p"·data-group-id="7477072347-2">[</span><span·class="p"·data-group-id="7477072347-3">{</span><span·class="s">"1"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7477072347-4">[</span><span·class="p"·data-group-id="7477072347-5">{</span><span·class="ss">update</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ch4</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7477072347-6">{</span><span·class="ss">advanced</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7477072347-7">[</span><span·class="p"·data-group-id="7477072347-7">]</span><span·class="p"·data-group-id="7477072347-6">}</span><span·class="p"·data-group-id="7477072347-5">}</span><span·class="p"·data-group-id="7477072347-4">]</span><span·class="p"·data-group-id="7477072347-3">}</span><span·class="p"·data-group-id="7477072347-2">]</span><span·class="p">,</span><span·class="w"> | ||
| 236 | ·</span><span·class="p"·data-group-id=" | 235 | ·</span><span·class="p"·data-group-id="6975483945-2">[</span><span·class="p"·data-group-id="6975483945-3">{</span><span·class="s">"1"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6975483945-4">[</span><span·class="p"·data-group-id="6975483945-5"[·...·truncated·by·diffoscope;·len:·683,·SHA:·06d6242a9d85bbeeaa1f9b18dda374670333adec80017ba4580183b2b7848459·...·]</span><span·class="w"> |
| 236 | ·</span><span·class="p"·data-group-id="6975483945-8">[</span><span·class="p"·data-group-id="6975483945-9">{</span><span·class="s">"1"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6975483945-10">[</span><span·class="p"·data-group-id="6975483945-11">{</span><span·class="ss">update</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ch4</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6975483945-12">{</span><span·class="ss">advanced</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6975483945-13">[</span><span·class="p"·data-group-id="6975483945-13">]</span><span·class="p"·data-group-id="6975483945-12">}</span><span·class="p"·data-group-id="6975483945-11">}</span><span·class="p"·data-group-id="6975483945-10">]</span><span·class="p"·data-group-id="6975483945-9">}</span><span·class="p"·data-group-id="6975483945-8">]</span><span·class="w"> | ||
| 237 | </span><span·class="p"·data-group-id=" | 237 | </span><span·class="p"·data-group-id="6975483945-1">}</span><span·class="p">.</span></code></pre><p>The·<code·class="inline">update</code>·instruction·must·contain·the·tuple·<code·class="inline">{advanced,Extra}</code>.·The |
| 238 | instruction·makes·the·special·process·call·the·callback·function | 238 | instruction·makes·the·special·process·call·the·callback·function |
| 239 | <code·class="inline">system_code_change/4</code>,·a·function·the·user·must·implement.·The·term·<code·class="inline">Extra</code>,·in | 239 | <code·class="inline">system_code_change/4</code>,·a·function·the·user·must·implement.·The·term·<code·class="inline">Extra</code>,·in |
| 240 | this·case·<code·class="inline">[]</code>,·is·passed·as·is·to·<code·class="inline">system_code_change/4</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 240 | this·case·<code·class="inline">[]</code>,·is·passed·as·is·to·<code·class="inline">system_code_change/4</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="9366937942-1">(</span><span·class="ss">ch4</span><span·class="p"·data-group-id="9366937942-1">)</span><span·class="p">.</span><span·class="w"> |
| 241 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 241 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 242 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 242 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="9366937942-2">(</span><span·class="p"·data-group-id="9366937942-3">[</span><span·class="ss">system_code_change</span><span·class="p">/</span><span·class="mi">4</span><span·class="p"·data-group-id="9366937942-3">]</span><span·class="p"·data-group-id="936693[·...·truncated·by·diffoscope;·len:·4,·SHA:·307fbf6a9dce8cfea50a88c7636ba44021ddb8a75b478b561890eae635a46b92·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 243 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 243 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 244 | </span><span·class="nf">system_code_change</span><span·class="p"·data-group-id=" | 244 | </span><span·class="nf">system_code_change</span><span·class="p"·data-group-id="9366937942-4">(</span><span·class="n">Chs</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">Module</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">OldVsn</span><span·[·...·truncated·by·diffoscope;·len:·135,·SHA:·30b153df3fd323c5ecacd45010e995fe35c2e04d93a92cd438e28a0d782fb26a·...·]-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| Max diff block lines reached; 101735/152518 bytes (66.70%) of diff not shown. | |||
| Offset 144, 16 lines modified | Offset 144, 16 lines modified | ||
| 144 | fast·as·possible,·what·can·we·do?·One·way·could·be·to·generate·more | 144 | fast·as·possible,·what·can·we·do?·One·way·could·be·to·generate·more |
| 145 | than·two·bytes·at·the·time.</p><pre><code·class="text">%·erlperf·'rand:bytes(100).'·'crypto:strong_rand_bytes(100).' | 145 | than·two·bytes·at·the·time.</p><pre><code·class="text">%·erlperf·'rand:bytes(100).'·'crypto:strong_rand_bytes(100).' |
| 146 | Code···································||········QPS·······Time···Rel | 146 | Code···································||········QPS·······Time···Rel |
| 147 | rand:bytes(100).························1····2124·Ki·····470·ns··100% | 147 | rand:bytes(100).························1····2124·Ki·····470·ns··100% |
| 148 | crypto:strong_rand_bytes(100).··········1····1915·Ki·····522·ns···90%</code></pre><p><a·href="../../lib/stdlib-6.2.1/doc/html/rand.html#bytes/1"><code·class="inline">rand:bytes/1</code></a>·is·still·faster·when·we·generate·100·bytes·at·the·time, | 148 | crypto:strong_rand_bytes(100).··········1····1915·Ki·····522·ns···90%</code></pre><p><a·href="../../lib/stdlib-6.2.1/doc/html/rand.html#bytes/1"><code·class="inline">rand:bytes/1</code></a>·is·still·faster·when·we·generate·100·bytes·at·the·time, |
| 149 | but·the·relative·difference·is·smaller.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erlperf·'rand:bytes(1000).'·'crypto:strong_rand_bytes(1000).'</span><span·class="w"> | 149 | but·the·relative·difference·is·smaller.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erlperf·'rand:bytes(1000).'·'crypto:strong_rand_bytes(1000).'</span><span·class="w"> |
| 150 | </span><span·class="n">Code</span><span·class="w">····································</span><span·class="p">||</span><span·class="w">········</span><span·class="n">QPS</span><span·class="w">·······</span><span·class="n">Time</span><span·class="w">···</span><span·class="n">Rel</span><span·class="w"> | 150 | </span><span·class="n">Code</span><span·class="w">····································</span><span·class="p">||</span><span·class="w">········</span><span·class="n">QPS</span><span·class="w">·······</span><span·class="n">Time</span><span·class="w">···</span><span·class="n">Rel</span><span·class="w"> |
| 151 | </span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">strong_rand_bytes</span><span·class="p"·data-group-id=" | 151 | </span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">strong_rand_bytes</span><span·class="p"·data-group-id="0026635922-1">(</span><span·class="mi">1000</span><span·class="p"·data-group-id="0026635922-1">)</span><span·class="p">.</span><span·class="w">··········</span><span·class="mi">1</span><span·class="w">····</span><span·class="mi">1518</span><span·class="w">·</span><span·class="n">Ki</span><span·class="w">·····</span><span·class="mi">658</span><span·class="w">·</span><span·class="ss">ns</span><span·class="w">··</span><span·class="mi">100</span><span·class="c1">%</span><span·class="w"> |
| 152 | </span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">bytes</span><span·class="p"·data-group-id=" | 152 | </span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">bytes</span><span·class="p"·data-group-id="0026635922-2">(</span><span·class="mi">1000</span><span·class="p"·data-group-id="0026635922-2">)</span><span·class="p">.</span><span·class="w">························</span><span·class="mi">1</span><span·class="w">·····</span><span·class="mi">284</span><span·class="w">·</span><span·class="n">Ki</span><span·class="w">····</span><span·class="mi">3521</span><span·class="w">·</span><span·class="ss">ns</span><span·class="w">···</span><span·class="mi">19</span><span·class="c1">%</span></code></pre><p>When·we·generate·1000·bytes·at·the·time,·<a·href="../../lib/crypto-5.5.3/doc/html/crypto.html#strong_rand_bytes/1"><code·class="inline">crypto:strong_rand_bytes/1</code></a>·is |
| 153 | now·the·fastest.</p><h2·id="benchmarking-using-erlang-otp-functionality"·class="section-heading"> | 153 | now·the·fastest.</p><h2·id="benchmarking-using-erlang-otp-functionality"·class="section-heading"> |
| 154 | ··<a·href="#benchmarking-using-erlang-otp-functionality"·class="hover-link"> | 154 | ··<a·href="#benchmarking-using-erlang-otp-functionality"·class="hover-link"> |
| 155 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 155 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 156 | ··</a> | 156 | ··</a> |
| 157 | ··<span·class="text">Benchmarking·using·Erlang/OTP·functionality</span> | 157 | ··<span·class="text">Benchmarking·using·Erlang/OTP·functionality</span> |
| 158 | </h2> | 158 | </h2> |
| 159 | <p>Benchmarks·can·measure·wall-clock·time·or·CPU·time.</p><ul><li><p><a·href="../../lib/stdlib-6.2.1/doc/html/timer.html#tc/3"><code·class="inline">timer:tc/3</code></a>·measures·wall-clock·time.·The·advantage·with·wall-clock·time·is | 159 | <p>Benchmarks·can·measure·wall-clock·time·or·CPU·time.</p><ul><li><p><a·href="../../lib/stdlib-6.2.1/doc/html/timer.html#tc/3"><code·class="inline">timer:tc/3</code></a>·measures·wall-clock·time.·The·advantage·with·wall-clock·time·is |
| Offset 114, 43 lines modified | Offset 114, 43 lines modified | ||
| 114 | ····<span>Constructing·and·Matching·Binaries</span> | 114 | ····<span>Constructing·and·Matching·Binaries</span> |
| 115 | ··</h1> | 115 | ··</h1> |
| 116 | <p>This·section·gives·a·few·examples·on·how·to·handle·binaries·in·an·efficient·way. | 116 | <p>This·section·gives·a·few·examples·on·how·to·handle·binaries·in·an·efficient·way. |
| 117 | The·sections·that·follow·take·an·in-depth·look·at·how·binaries·are·implemented | 117 | The·sections·that·follow·take·an·in-depth·look·at·how·binaries·are·implemented |
| 118 | and·how·to·best·take·advantages·of·the·optimizations·done·by·the·compiler·and | 118 | and·how·to·best·take·advantages·of·the·optimizations·done·by·the·compiler·and |
| 119 | runtime·system.</p><p>Binaries·can·be·efficiently·<em>built</em>·in·the·following·way:</p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">my_list_to_binary</span><span·class="p"·data-group-id=" | 119 | runtime·system.</p><p>Binaries·can·be·efficiently·<em>built</em>·in·the·following·way:</p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">my_list_to_binary</span><span·class="p"·data-group-id="9715057943-1">(</span><span·class="n">List</span><span·class="p"·data-group-id="9715057943-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 120 | ····</span><span·class="nf">my_list_to_binary</span><span·class="p"·data-group-id=" | 120 | ····</span><span·class="nf">my_list_to_binary</span><span·class="p"·data-group-id="9715057943-2">(</span><span·class="n">List</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9715057943-3"><<</span><span·class="p"·data-group-id="9715057943-3">>></span><span·class="p"·data-group-id="97150579[·...·truncated·by·diffoscope;·len:·2,·SHA:·44cb730c420480a0477b505ae68af508fb90f96cf0ec54c6ad16949dd427f13a·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 121 | </span><span·class="nf">my_list_to_binary</span><span·class="p"·data-group-id=" | 121 | </span><span·class="nf">my_list_to_binary</span><span·class="p"·data-group-id="9715057943-4">(</span><span·class="p"·data-group-id="9715057943-5">[</span><span·class="n">H</span><span·class="p">|</span><span·class="n">T</span><span·class="p"·data-group-id="9715057943-5">]</span><span·class="p">,</span><span·class="w">·</span><span·cl[·...·truncated·by·diffoscope;·len:·59,·SHA:·f263c78322f9921f5735084dafac60e9d2f8993e35b54c2196cf9fb7aa6c362e·...·]-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 122 | ····</span><span·class="nf">my_list_to_binary</span><span·class="p"·data-group-id=" | 122 | ····</span><span·class="nf">my_list_to_binary</span><span·class="p"·data-group-id="9715057943-6">(</span><span·class="n">T</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9715057943-7"><<</span><span·class="n">Acc</span><span·class="o">/</span><span·class="ss">binary</span><span·class="p">,</spa[·...·truncated·by·diffoscope;·len:·127,·SHA:·2e0abd53aea6d3f6b23bd66d9c59cb98f5b576292dd37178668922801919bb9b·...·]-6">)</span><span·class="p">;</span><span·class="w"> |
| 123 | </span><span·class="nf">my_list_to_binary</span><span·class="p"·data-group-id=" | 123 | </span><span·class="nf">my_list_to_binary</span><span·class="p"·data-group-id="9715057943-8">(</span><span·class="p"·data-group-id="9715057943-9">[</span><span·class="p"·data-group-id="9715057943-9">]</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Acc</span><span·class="p"·data-group-id="9715057943-8">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 124 | ····</span><span·class="n">Acc</span><span·class="p">.</span></code></pre><p>Appending·data·to·a·binary·as·in·the·example·is·efficient·because·it·is | 124 | ····</span><span·class="n">Acc</span><span·class="p">.</span></code></pre><p>Appending·data·to·a·binary·as·in·the·example·is·efficient·because·it·is |
| 125 | specially·optimized·by·the·runtime·system·to·avoid·copying·the·<code·class="inline">Acc</code>·binary | 125 | specially·optimized·by·the·runtime·system·to·avoid·copying·the·<code·class="inline">Acc</code>·binary |
| 126 | every·time.</p><p>Prepending·data·to·a·binary·in·a·loop·is·not·efficient:</p><p><strong>DO·NOT</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">rev_list_to_binary</span><span·class="p"·data-group-id="4 | 126 | every·time.</p><p>Prepending·data·to·a·binary·in·a·loop·is·not·efficient:</p><p><strong>DO·NOT</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">rev_list_to_binary</span><span·class="p"·data-group-id="4135350789-1">(</span><span·class="n">List</span><span·class="p"·data-group-id="4135350789-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 127 | ····</span><span·class="nf">rev_list_to_binary</span><span·class="p"·data-group-id="4 | 127 | ····</span><span·class="nf">rev_list_to_binary</span><span·class="p"·data-group-id="4135350789-2">(</span><span·class="n">List</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4135350789-3"><<</span><span·class="p"·data-group-id="4135350789-3">>></span><span·class="p"·data-group-id="413535078[·...·truncated·by·diffoscope;·len:·1,·SHA:·19581e27de7ced00ff1ce50b2047e7a567c76b1cbaebabe5ef03f7c3017bb5b7·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 128 | </span><span·class="nf">rev_list_to_binary</span><span·class="p"·data-group-id="4 | 128 | </span><span·class="nf">rev_list_to_binary</span><span·class="p"·data-group-id="4135350789-4">(</span><span·class="p"·data-group-id="4135350789-5">[</span><span·class="n">H</span><span·class="p">|</span><span·class="n">T</span><span·class="p"·data-group-id="4135350789-5">]</span><span·class="p">,</span><span·class="w">·</span><span·cla[·...·truncated·by·diffoscope;·len:·58,·SHA:·aaf4d08003889ae6f24a713d9618daa0b073da47f0b5b74fe0bf98f83f75c821·...·]-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 129 | ····</span><span·class="nf">rev_list_to_binary</span><span·class="p"·data-group-id="4 | 129 | ····</span><span·class="nf">rev_list_to_binary</span><span·class="p"·data-group-id="4135350789-6">(</span><span·class="n">T</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4135350789-7"><<</span><span·class="n">H</span><span·class="p">,</span><span·class="n">Acc</span><span·class="o">/</span><span[·...·truncated·by·diffoscope;·len:·126,·SHA:·99014d953d517959f4fb98dc20a00c02c2e769a37300b47a00ca0b5bfb7c03b3·...·]-6">)</span><span·class="p">;</span><span·class="w"> |
| 130 | </span><span·class="nf">rev_list_to_binary</span><span·class="p"·data-group-id="4 | 130 | </span><span·class="nf">rev_list_to_binary</span><span·class="p"·data-group-id="4135350789-8">(</span><span·class="p"·data-group-id="4135350789-9">[</span><span·class="p"·data-group-id="4135350789-9">]</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Acc</span><span·class="p"·data-group-id="4135350789-8">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 131 | ····</span><span·class="n">Acc</span><span·class="p">.</span></code></pre><p>This·is·not·efficient·for·long·lists·because·the·<code·class="inline">Acc</code>·binary·is·copied·every | 131 | ····</span><span·class="n">Acc</span><span·class="p">.</span></code></pre><p>This·is·not·efficient·for·long·lists·because·the·<code·class="inline">Acc</code>·binary·is·copied·every |
| 132 | time.·One·way·to·make·the·function·more·efficient·is·like·this:</p><p><strong>DO·NOT</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">rev_list_to_binary</span><span·class="p"·data-group-id=" | 132 | time.·One·way·to·make·the·function·more·efficient·is·like·this:</p><p><strong>DO·NOT</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">rev_list_to_binary</span><span·class="p"·data-group-id="6963893871-1">(</span><span·class="n">List</span><span·class="p"·data-group-id="6963893871-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 133 | ····</span><span·class="nf">rev_list_to_binary</span><span·class="p"·data-group-id=" | 133 | ····</span><span·class="nf">rev_list_to_binary</span><span·class="p"·data-group-id="6963893871-2">(</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">reverse</span><span·class="p"·data-group-id="6963893871-3">(</span><span·class="n">List</span><span·class="p"·data-group-id="6963893871-3">)</span><span·class="p">,[·...·truncated·by·diffoscope;·len:·192,·SHA:·9c2dc514b6454236c9074f76d6e86ec8b0145e917bf82ceb2868b4ad6049164d·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 134 | </span><span·class="nf">rev_list_to_binary</span><span·class="p"·data-group-id=" | 134 | </span><span·class="nf">rev_list_to_binary</span><span·class="p"·data-group-id="6963893871-5">(</span><span·class="p"·data-group-id="6963893871-6">[</span><span·class="n">H</span><span·class="p">|</span><span·class="n">T</span><span·class="p"·data-group-id="6963893871-6">]</span><span·class="p">,</span><span·class="w">·</span><span·cl[·...·truncated·by·diffoscope;·len:·59,·SHA:·eb1c1bda4883754e242949d50369d41bd4e49eb739b6317326eb2a24548cc2c2·...·]-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 135 | ····</span><span·class="nf">rev_list_to_binary</span><span·class="p"·data-group-id=" | 135 | ····</span><span·class="nf">rev_list_to_binary</span><span·class="p"·data-group-id="6963893871-7">(</span><span·class="n">T</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6963893871-8"><<</span><span·class="n">Acc</span><span·class="o">/</span><span·class="ss">binary</span><span·class="p">,</spa[·...·truncated·by·diffoscope;·len:·127,·SHA:·1137dfb1732ed23ae29a06266fbc64c854b19f0d405623371b8edaecb0446baf·...·]-7">)</span><span·class="p">;</span><span·class="w"> |
| 136 | </span><span·class="nf">rev_list_to_binary</span><span·class="p"·data-group-id=" | 136 | </span><span·class="nf">rev_list_to_binary</span><span·class="p"·data-group-id="6963893871-9">(</span><span·class="p"·data-group-id="6963893871-10">[</span><span·class="p"·data-group-id="6963893871-10">]</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Acc</span><span·class="p"·data-group-id="6963893871-9">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 137 | ····</span><span·class="n">Acc</span><span·class="p">.</span></code></pre><p>Another·way·to·avoid·copying·the·binary·each·time·is·like·this:</p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">rev_list_to_binary</span><span·class="p"·data-group-id="1 | 137 | ····</span><span·class="n">Acc</span><span·class="p">.</span></code></pre><p>Another·way·to·avoid·copying·the·binary·each·time·is·like·this:</p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">rev_list_to_binary</span><span·class="p"·data-group-id="0115170577-1">(</span><span·class="p"·data-group-id="0115170577-2">[</span><span·class="n">H</span><span·class="p">|</span><span·class="n">T</span><span·class="p"·data-group-id="0115170577-2">]</span><span·class="p"·data-group-id="0115170577-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 138 | ····</span><span·class="n">RevTail</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">rev_list_to_binary</span><span·class="p"·data-group-id="1 | 138 | ····</span><span·class="n">RevTail</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">rev_list_to_binary</span><span·class="p"·data-group-id="0115170577-3">(</span><span·class="n">T</span><span·class="p"·data-group-id="0115170577-3">)</span><span·class="p">,</span><span·class="w"> |
| 139 | ····</span><span·class="p"·data-group-id="1 | 139 | ····</span><span·class="p"·data-group-id="0115170577-4"><<</span><span·class="n">RevTail</span><span·class="o">/</span><span·class="ss">binary</span><span·class="p">,</span><span·class="n">H</span><span·class="p"·data-group-id="0115170577-4">>></span><span·class="p">;</span><span·class="w"> |
| 140 | </span><span·class="nf">rev_list_to_binary</span><span·class="p"·data-group-id="1 | 140 | </span><span·class="nf">rev_list_to_binary</span><span·class="p"·data-group-id="0115170577-5">(</span><span·class="p"·data-group-id="0115170577-6">[</span><span·class="p"·data-group-id="0115170577-6">]</span><span·class="p"·data-group-id="0115170577-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 141 | ····</span><span·class="p"·data-group-id="1 | 141 | ····</span><span·class="p"·data-group-id="0115170577-7"><<</span><span·class="p"·data-group-id="0115170577-7">>></span><span·class="p">.</span></code></pre><p>Note·that·in·each·of·the·<strong>DO</strong>·examples,·the·binary·to·be·appended·to·is·always |
| 142 | given·as·the·first·segment.</p><p>Binaries·can·be·efficiently·<em>matched</em>·in·the·following·way:</p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">my_binary_to_list</span><span·class="p"·data-group-id=" | 142 | given·as·the·first·segment.</p><p>Binaries·can·be·efficiently·<em>matched</em>·in·the·following·way:</p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">my_binary_to_list</span><span·class="p"·data-group-id="6532617151-1">(</span><span·class="p"·data-group-id="6532617151-2"><<</span><span·class="n">H</span><span·class="p">,</span><span·class="n">T</span><span·class="o">/</span><span·class="ss">binary</span><span·class="p"·data-group-id="6532617151-2">>[·...·truncated·by·diffoscope;·len:·53,·SHA:·bb67021ee6dc4bb1ca2cae452d11d018118f9cac3967ad06668a878261b34322·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 143 | ····</span><span·class="p"·data-group-id=" | 143 | ····</span><span·class="p"·data-group-id="6532617151-3">[</span><span·class="n">H</span><span·class="p">|</span><span·class="nf">my_binary_to_list</span><span·class="p"·data-group-id="6532617151-4">(</span><span·class="n">T</span><span·class="p"·data-group-id="6532617151-4">)</span><span·class="p"[·...·truncated·by·diffoscope;·len:·26,·SHA:·f8f97aaaf817c2816f0be74b31d357cd8e60b09a61f0d9ae6ce46b9dcaac88ff·...·]-3">]</span><span·class="p">;</span><span·class="w"> |
| 144 | </span><span·class="nf">my_binary_to_list</span><span·class="p"·data-group-id=" | 144 | </span><span·class="nf">my_binary_to_list</span><span·class="p"·data-group-id="6532617151-5">(</span><span·class="p"·data-group-id="6532617151-6"><<</span><span·class="p"·data-group-id="6532617151-6">>></span><span·class="p"·data-group-id="6532617151-5">)</span><span·class="w">·</span><span·class="p">-></span><span·cla[·...·truncated·by·diffoscope;·len:·109,·SHA:·e315fdf67bae966d69004ce74a17fa532a44ea3f60473990f999188cd01e18af·...·]-7">]</span><span·class="p">.</span></code></pre><h2·id="how-binaries-are-implemented"·class="section-heading"> |
| 145 | ··<a·href="#how-binaries-are-implemented"·class="hover-link"> | 145 | ··<a·href="#how-binaries-are-implemented"·class="hover-link"> |
| 146 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 146 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 147 | ··</a> | 147 | ··</a> |
| 148 | ··<span·class="text">How·Binaries·are·Implemented</span> | 148 | ··<span·class="text">How·Binaries·are·Implemented</span> |
| 149 | </h2> | 149 | </h2> |
| 150 | <p>Internally,·binaries·and·bitstrings·are·implemented·in·the·same·way.·In·this | 150 | <p>Internally,·binaries·and·bitstrings·are·implemented·in·the·same·way.·In·this |
| 151 | section,·they·are·called·<em>binaries</em>·because·that·is·what·they·are·called·in·the | 151 | section,·they·are·called·<em>binaries</em>·because·that·is·what·they·are·called·in·the |
| Offset 205, 29 lines modified | Offset 205, 29 lines modified | ||
| 205 | called·referential·transparency)·of·Erlang·would·break.</p><h2·id="constructing-binaries"·class="section-heading"> | 205 | called·referential·transparency)·of·Erlang·would·break.</p><h2·id="constructing-binaries"·class="section-heading"> |
| 206 | ··<a·href="#constructing-binaries"·class="hover-link"> | 206 | ··<a·href="#constructing-binaries"·class="hover-link"> |
| 207 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 207 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 208 | ··</a> | 208 | ··</a> |
| 209 | ··<span·class="text">Constructing·Binaries</span> | 209 | ··<span·class="text">Constructing·Binaries</span> |
| 210 | </h2> | 210 | </h2> |
| 211 | <p>Appending·to·a·binary·or·bitstring·in·the·following·way·is·specially·optimized | 211 | <p>Appending·to·a·binary·or·bitstring·in·the·following·way·is·specially·optimized |
| 212 | to·avoid·copying·the·binary:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 212 | to·avoid·copying·the·binary:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8099954401-1"><<</span><span·class="n">Binary</span><span·class="o">/</span><span·class="ss">binary</span><span·class="p">,</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-gro[·...·truncated·by·diffoscope;·len:·17,·SHA:·b76be9cf6c72f033be0b369e3a3101d8d773a271d9c517b4850d98b6b5190d9e·...·]-1">>></span><span·class="w"> |
| 213 | </span><span·class="c1">%%·-·OR·-</span><span·class="w"> | 213 | </span><span·class="c1">%%·-·OR·-</span><span·class="w"> |
| 214 | </span><span·class="p"·data-group-id=" | 214 | </span><span·class="p"·data-group-id="8099954401-2"><<</span><span·class="n">Binary</span><span·class="o">/</span><span·class="ss">bitstring</span><span·class="p">,</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·20,·SHA:·6abe22e4d5299d6ad8aef5dde7d707aae35568370b9602311c7228d4093b6697·...·]-2">>></span></code></pre><p>This·optimization·is·applied·by·the·runtime·system·in·a·way·that·makes·it |
| 215 | effective·in·most·circumstances·(for·exceptions,·see | 215 | effective·in·most·circumstances·(for·exceptions,·see |
| 216 | <a·href="binaryhandling.html#forced_copying">Circumstances·That·Force·Copying</a>).·The | 216 | <a·href="binaryhandling.html#forced_copying">Circumstances·That·Force·Copying</a>).·The |
| 217 | optimization·in·its·basic·form·does·not·need·any·help·from·the·compiler. | 217 | optimization·in·its·basic·form·does·not·need·any·help·from·the·compiler. |
| 218 | However,·the·compiler·add·hints·to·the·runtime·system·when·it·is·safe·to·apply | 218 | However,·the·compiler·add·hints·to·the·runtime·system·when·it·is·safe·to·apply |
| 219 | the·optimization·in·a·more·efficient·way.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Change</h4><p>The·compiler·support·for·making·the·optimization·more·efficient·was·added·in | 219 | the·optimization·in·a·more·efficient·way.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Change</h4><p>The·compiler·support·for·making·the·optimization·more·efficient·was·added·in |
| 220 | Erlang/OTP·26.</p></section><p>To·explain·how·the·basic·optimization·works,·let·us·examine·the·following·code | 220 | Erlang/OTP·26.</p></section><p>To·explain·how·the·basic·optimization·works,·let·us·examine·the·following·code |
| 221 | line·by·line:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Bin0</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4 | 221 | line·by·line:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Bin0</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4665561020-1"><<</span><span·class="mi">0</span><span·class="p"·data-group-id="4665561020-1">>></span><span·class="p">,</span><span·class="w">····················</span><span·class="c1">%%·1</span><span·class="w"> |
| 222 | </span><span·class="n">Bin1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4 | 222 | </span><span·class="n">Bin1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4665561020-2"><<</span><span·class="n">Bin0</span><span·class="o">/</span><span·class="ss">binary</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span>[·...·truncated·by·diffoscope;·len:·41,·SHA:·21318d4b38a68003e4c2feea0daf233d8c86f1c094ea56e1b6f759283914a387·...·]-2">>></span><span·class="p">,</span><span·class="w">····</span><span·class="c1">%%·2</span><span·class="w"> |
| 223 | </span><span·class="n">Bin2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4 | 223 | </span><span·class="n">Bin2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4665561020-3"><<</span><span·class="n">Bin1</span><span·class="o">/</span><span·class="ss">binary</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">5</span><span·class="p">,</span><span·class="mi">6</span>[·...·truncated·by·diffoscope;·len:·41,·SHA:·21318d4b38a68003e4c2feea0daf233d8c86f1c094ea56e1b6f759283914a387·...·]-3">>></span><span·class="p">,</span><span·class="w">····</span><span·class="c1">%%·3</span><span·class="w"> |
| 224 | </span><span·class="n">Bin3</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4 | 224 | </span><span·class="n">Bin3</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4665561020-4"><<</span><span·class="n">Bin2</span><span·class="o">/</span><span·class="ss">binary</span><span·class="p">,</span><span·class="mi">7</span><span·class="p">,</span><span·class="mi">8</span><span·class="p">,</span><span·class="mi">9</span>[·...·truncated·by·diffoscope;·len:·41,·SHA:·21318d4b38a68003e4c2feea0daf233d8c86f1c094ea56e1b6f759283914a387·...·]-4">>></span><span·class="p">,</span><span·class="w">····</span><span·class="c1">%%·4</span><span·class="w"> |
| 225 | </span><span·class="n">Bin4</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4 | 225 | </span><span·class="n">Bin4</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4665561020-5"><<</span><span·class="n">Bin1</span><span·class="o">/</span><span·class="ss">binary</span><span·class="p">,</span><span·class="mi">17</span><span·class="p"·data-group-id="4665561020-5">>></span><span·class="p">,</span><span·class="w">·······</span><span·class="c1">%%·5·!!!</span><span·class="w"> |
| 226 | </span><span·class="p"·data-group-id="4 | 226 | </span><span·class="p"·data-group-id="4665561020-6">{</span><span·class="n">Bin4</span><span·class="p">,</span><span·class="n">Bin3</span><span·class="p"·data-group-id="4665561020-6">}</span><span·class="w">······················</span><span·class="c1">%%·6</span></code></pre><ul><li><p>Line·1·(marked·with·the·<code·class="inline">%%·1</code>·comment),·assigns·a |
| 227 | <a·href="binaryhandling.html#heap_binary">heap·binary</a>·to·the·<code·class="inline">Bin0</code>·variable.</p></li><li><p>Line·2·is·an·append·operation.·As·<code·class="inline">Bin0</code>·has·not·been·involved·in·an·append | 227 | <a·href="binaryhandling.html#heap_binary">heap·binary</a>·to·the·<code·class="inline">Bin0</code>·variable.</p></li><li><p>Line·2·is·an·append·operation.·As·<code·class="inline">Bin0</code>·has·not·been·involved·in·an·append |
| 228 | operation,·a·new·<a·href="binaryhandling.html#refc_binary">refc·binary</a>·is·created·and | 228 | operation,·a·new·<a·href="binaryhandling.html#refc_binary">refc·binary</a>·is·created·and |
| 229 | the·contents·of·<code·class="inline">Bin0</code>·is·copied·into·it.·The·<em>ProcBin</em>·part·of·the·refc | 229 | the·contents·of·<code·class="inline">Bin0</code>·is·copied·into·it.·The·<em>ProcBin</em>·part·of·the·refc |
| 230 | binary·has·its·size·set·to·the·size·of·the·data·stored·in·the·binary,·while | 230 | binary·has·its·size·set·to·the·size·of·the·data·stored·in·the·binary,·while |
| 231 | the·binary·object·has·extra·space·allocated.·The·size·of·the·binary·object·is | 231 | the·binary·object·has·extra·space·allocated.·The·size·of·the·binary·object·is |
| 232 | either·twice·the·size·of·<code·class="inline">Bin1</code>·or·256,·whichever·is·larger.·In·this·case·it | 232 | either·twice·the·size·of·<code·class="inline">Bin1</code>·or·256,·whichever·is·larger.·In·this·case·it |
| 233 | is·256.</p></li><li><p>Line·3·is·more·interesting.·<code·class="inline">Bin1</code>·<em>has</em>·been·used·in·an·append·operation,·and | 233 | is·256.</p></li><li><p>Line·3·is·more·interesting.·<code·class="inline">Bin1</code>·<em>has</em>·been·used·in·an·append·operation,·and |
| Offset 253, 23 lines modified | Offset 253, 23 lines modified | ||
| 253 | handle·an·append·operation·to·a·heap·binary·by·copying·it·to·a·refc·binary·(line | 253 | handle·an·append·operation·to·a·heap·binary·by·copying·it·to·a·refc·binary·(line |
| 254 | 2),·and·also·handle·an·append·operation·to·a·previous·version·of·the·binary·by | 254 | 2),·and·also·handle·an·append·operation·to·a·previous·version·of·the·binary·by |
| 255 | copying·it·(line·5).·The·support·for·doing·that·does·not·come·for·free.·For | 255 | copying·it·(line·5).·The·support·for·doing·that·does·not·come·for·free.·For |
| 256 | example,·to·make·it·possible·to·know·when·it·is·necessary·to·copy·the·binary, | 256 | example,·to·make·it·possible·to·know·when·it·is·necessary·to·copy·the·binary, |
| 257 | for·every·append·operation,·the·runtime·system·must·create·a·sub·binary.</p><p>When·the·compiler·can·determine·that·none·of·those·situations·need·to·be·handled | 257 | for·every·append·operation,·the·runtime·system·must·create·a·sub·binary.</p><p>When·the·compiler·can·determine·that·none·of·those·situations·need·to·be·handled |
| 258 | and·that·the·append·operation·cannot·possibly·fail,·the·compiler·generates·code | 258 | and·that·the·append·operation·cannot·possibly·fail,·the·compiler·generates·code |
| 259 | that·causes·the·runtime·system·to·apply·a·more·efficient·variant·of·the | 259 | that·causes·the·runtime·system·to·apply·a·more·efficient·variant·of·the |
| 260 | optimization.</p><p><strong>Example:</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 260 | optimization.</p><p><strong>Example:</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="5548549617-1">(</span><span·class="ss">repack</span><span·class="p"·data-group-id="5548549617-1">)</span><span·class="p">.</span><span·class="w"> |
| 261 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 261 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="5548549617-2">(</span><span·class="p"·data-group-id="5548549617-3">[</span><span·class="ss">repack</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id="5548549617-3">]</span><span·class="p"·data-group-id="5548549617-2">)</span><span·class="p">.</span><span·class="w"> |
| 262 | </span><span·class="nf">repack</span><span·class="p"·data-group-id=" | 262 | </span><span·class="nf">repack</span><span·class="p"·data-group-id="5548549617-4">(</span><span·class="n">Bin</span><span·class="p"·data-group-id="5548549617-4">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_binary</span><span·class="p"·data-group-id="5548549617-5">(<[·...·truncated·by·diffoscope;·len:·73,·SHA:·cc5ebe66cf9e60df5fff375d155d6c963720f60dd9443081b7accb536165f1ef·...·]-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 263 | ····</span><span·class="nf">repack</span><span·class="p"·data-group-id=" | 263 | ····</span><span·class="nf">repack</span><span·class="p"·data-group-id="5548549617-6">(</span><span·class="n">Bin</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5548549617-7"><<</span><span·class="p"·data-group-id="5548549617-7">>></span><span·class="p"·data-group-id="554854961[·...·truncated·by·diffoscope;·len:·1,·SHA:·7902699be42c8a8e46fbbb4501726517e86b22c56a189f7625a6da49081b2451·...·]-6">)</span><span·class="p">.</span><span·class="w"> |
| 264 | </span><span·class="nf">repack</span><span·class="p"·data-group-id=" | 264 | </span><span·class="nf">repack</span><span·class="p"·data-group-id="5548549617-8">(</span><span·class="p"·data-group-id="5548549617-9"><<</span><span·class="n">C</span><span·class="p">:</span><span·class="mi">8</span><span·class="p">,</span><span·class="n">T</span><span·class="o">/</span><span·class="ss">binary</span[·...·truncated·by·diffoscope;·len:·179,·SHA:·c014d5f7eea0d509420ba76d4d9fc7b5903078943af9780e05fb985349d9da80·...·]-8">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 265 | ····</span><span·class="nf">repack</span><span·class="p"·data-group-id=" | 265 | ····</span><span·class="nf">repack</span><span·class="p"·data-group-id="5548549617-10">(</span><span·class="n">T</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5548549617-11"><<</span><span·class="n">Result</span><span·class="o">/</span><span·class="ss">binary</span><span·class="p">,[·...·truncated·by·diffoscope;·len:·183,·SHA:·14bc2bbe81fa326573bb9e829c2ea58381c0cf77206b47ba4e6b75a2ab0bb4c5·...·]-10">)</span><span·class="p">;</span><span·class="w"> |
| 266 | </span><span·class="nf">repack</span><span·class="p"·data-group-id=" | 266 | </span><span·class="nf">repack</span><span·class="p"·data-group-id="5548549617-12">(</span><span·class="p"·data-group-id="5548549617-13"><<</span><span·class="p"·data-group-id="5548549617-13">>></span><span·class="p">,</span><span·class="w">·</span><span·class="n">Result</span><span·class="p"·data-group-id="554[·...·truncated·by·diffoscope;·len:·7,·SHA:·8fd5e0107df155c0698b37071a85d4e83a8a3d01ba47dd805b540d9f8f7825b1·...·]-12">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 267 | ····</span><span·class="n">Result</span><span·class="p">.</span></code></pre><p>The·<code·class="inline">repack/2</code>·function·only·keeps·a·single·version·of·the·binary,·so·there·is | 267 | ····</span><span·class="n">Result</span><span·class="p">.</span></code></pre><p>The·<code·class="inline">repack/2</code>·function·only·keeps·a·single·version·of·the·binary,·so·there·is |
| 268 | never·any·need·to·copy·the·binary.·The·compiler·rewrites·the·creation·of·the | 268 | never·any·need·to·copy·the·binary.·The·compiler·rewrites·the·creation·of·the |
| 269 | empty·binary·in·<code·class="inline">repack/1</code>·to·instead·create·a·refc·binary·with·256·bytes | 269 | empty·binary·in·<code·class="inline">repack/1</code>·to·instead·create·a·refc·binary·with·256·bytes |
| 270 | already·reserved;·thus,·the·append·operation·in·<code·class="inline">repack/2</code>·never·needs·to·handle | 270 | already·reserved;·thus,·the·append·operation·in·<code·class="inline">repack/2</code>·never·needs·to·handle |
| 271 | a·binary·not·prepared·for·appending.</p><p><a·href=""·id="forced_copying"></a></p><h3·id="circumstances-that-force-copying"·class="section-heading"> | 271 | a·binary·not·prepared·for·appending.</p><p><a·href=""·id="forced_copying"></a></p><h3·id="circumstances-that-force-copying"·class="section-heading"> |
| 272 | ··<a·href="#circumstances-that-force-copying"·class="hover-link"> | 272 | ··<a·href="#circumstances-that-force-copying"·class="hover-link"> |
| 273 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 273 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 281, 72 lines modified | Offset 281, 72 lines modified | ||
| 281 | reason·is·that·the·binary·object·can·be·moved·(reallocated)·during·an·append | 281 | reason·is·that·the·binary·object·can·be·moved·(reallocated)·during·an·append |
| 282 | operation,·and·when·that·happens,·the·pointer·in·the·ProcBin·must·be·updated.·If | 282 | operation,·and·when·that·happens,·the·pointer·in·the·ProcBin·must·be·updated.·If |
| 283 | there·would·be·more·than·one·ProcBin·pointing·to·the·binary·object,·it·would·not | 283 | there·would·be·more·than·one·ProcBin·pointing·to·the·binary·object,·it·would·not |
| 284 | be·possible·to·find·and·update·all·of·them.</p><p>Therefore,·certain·operations·on·a·binary·mark·it·so·that·any·future·append | 284 | be·possible·to·find·and·update·all·of·them.</p><p>Therefore,·certain·operations·on·a·binary·mark·it·so·that·any·future·append |
| 285 | operation·will·be·forced·to·copy·the·binary.·In·most·cases,·the·binary·object | 285 | operation·will·be·forced·to·copy·the·binary.·In·most·cases,·the·binary·object |
| 286 | will·be·shrunk·at·the·same·time·to·reclaim·the·extra·space·allocated·for | 286 | will·be·shrunk·at·the·same·time·to·reclaim·the·extra·space·allocated·for |
| 287 | growing.</p><p>When·appending·to·a·binary·as·follows,·only·the·binary·returned·from·the·latest | 287 | growing.</p><p>When·appending·to·a·binary·as·follows,·only·the·binary·returned·from·the·latest |
| 288 | append·operation·will·support·further·cheap·append·operations:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Bin</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 288 | append·operation·will·support·further·cheap·append·operations:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Bin</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="8608962431-1"><<</span><span·class="n">Bin0</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="8608962431-1">>></span></code></pre><p>In·the·code·fragment·in·the·beginning·of·this·section,·appending·to·<code·class="inline">Bin</code>·will |
| 289 | be·cheap,·while·appending·to·<code·class="inline">Bin0</code>·will·force·the·creation·of·a·new·binary·and | 289 | be·cheap,·while·appending·to·<code·class="inline">Bin0</code>·will·force·the·creation·of·a·new·binary·and |
| 290 | copying·of·the·contents·of·<code·class="inline">Bin0</code>.</p><p>If·a·binary·is·sent·as·a·message·to·a·process·or·port,·the·binary·will·be·shrunk | 290 | copying·of·the·contents·of·<code·class="inline">Bin0</code>.</p><p>If·a·binary·is·sent·as·a·message·to·a·process·or·port,·the·binary·will·be·shrunk |
| 291 | and·any·further·append·operation·will·copy·the·binary·data·into·a·new·binary. | 291 | and·any·further·append·operation·will·copy·the·binary·data·into·a·new·binary. |
| 292 | For·example,·in·the·following·code·fragment·<code·class="inline">Bin1</code>·will·be·copied·in·the·third | 292 | For·example,·in·the·following·code·fragment·<code·class="inline">Bin1</code>·will·be·copied·in·the·third |
| 293 | line:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Bin1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 293 | line:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Bin1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="8334411090-1"><<</span><span·class="n">Bin0</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="8334411090-1">>></span><span·class="p">,</span><span·class="w"> |
| 294 | </span><span·class="n">PortOrPid</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="n">Bin1</span><span·class="p">,</span><span·class="w"> | 294 | </span><span·class="n">PortOrPid</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="n">Bin1</span><span·class="p">,</span><span·class="w"> |
| 295 | </span><span·class="n">Bin</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 295 | </span><span·class="n">Bin</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="8334411090-2"><<</span><span·class="n">Bin1</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="8334411090-2">>></span><span·class="w">··</span><span·class="c1">%%·Bin1·will·be·COPIED</span></code></pre><p>The·same·happens·if·you·insert·a·binary·into·an·Ets·table,·send·it·to·a·port |
| 296 | using·<a·href="../../erts-15.2.3/doc/html/erlang.html#port_command/2"><code·class="inline">erlang:port_command/2</code></a>,·or·pass·it·to | 296 | using·<a·href="../../erts-15.2.3/doc/html/erlang.html#port_command/2"><code·class="inline">erlang:port_command/2</code></a>,·or·pass·it·to |
| 297 | <a·href="../../erts-15.2.3/doc/html/erl_nif.html#enif_inspect_binary">enif_inspect_binary</a>·in·a·NIF.</p><p>Matching·a·binary·will·also·cause·it·to·shrink·and·the·next·append·operation | 297 | <a·href="../../erts-15.2.3/doc/html/erl_nif.html#enif_inspect_binary">enif_inspect_binary</a>·in·a·NIF.</p><p>Matching·a·binary·will·also·cause·it·to·shrink·and·the·next·append·operation |
| 298 | will·copy·the·binary·data:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Bin1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4 | 298 | will·copy·the·binary·data:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Bin1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4428287239-1"><<</span><span·class="n">Bin0</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="4428287239-1">>></span><span·class="p">,</span><span·class="w"> |
| 299 | </span><span·class="p"·data-group-id="4 | 299 | </span><span·class="p"·data-group-id="4428287239-2"><<</span><span·class="n">X</span><span·class="p">,</span><span·class="n">Y</span><span·class="p">,</span><span·class="n">Z</span><span·class="p">,</span><span·class="n">T</span><span·class="o">/</span><span·class="ss">binary</span><span·[·...·truncated·by·diffoscope;·len:·35,·SHA:·f048b2e795dc4105d98c8d7e315cc7a70d4424dab048a0fae106c9fd99ef2773·...·]-2">>></span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Bin1</span><span·class="p">,</span><span·class="w"> |
| 300 | </span><span·class="n">Bin</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4 | 300 | </span><span·class="n">Bin</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4428287239-3"><<</span><span·class="n">Bin1</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="4428287239-3">>></span><span·class="w">··</span><span·class="c1">%%·Bin1·will·be·COPIED</span></code></pre><p>The·reason·is·that·a·<a·href="binaryhandling.html#match_context">match·context</a>·contains·a |
| 301 | direct·pointer·to·the·binary·data.</p><p>If·a·process·simply·keeps·binaries·(either·in·"loop·data"·or·in·the·process | 301 | direct·pointer·to·the·binary·data.</p><p>If·a·process·simply·keeps·binaries·(either·in·"loop·data"·or·in·the·process |
| 302 | dictionary),·the·garbage·collector·can·eventually·shrink·the·binaries.·If·only | 302 | dictionary),·the·garbage·collector·can·eventually·shrink·the·binaries.·If·only |
| 303 | one·such·binary·is·kept,·it·will·not·be·shrunk.·If·the·process·later·appends·to | 303 | one·such·binary·is·kept,·it·will·not·be·shrunk.·If·the·process·later·appends·to |
| 304 | a·binary·that·has·been·shrunk,·the·binary·object·will·be·reallocated·to·make | 304 | a·binary·that·has·been·shrunk,·the·binary·object·will·be·reallocated·to·make |
| 305 | place·for·the·data·to·be·appended.</p><h2·id="matching-binaries"·class="section-heading"> | 305 | place·for·the·data·to·be·appended.</p><h2·id="matching-binaries"·class="section-heading"> |
| 306 | ··<a·href="#matching-binaries"·class="hover-link"> | 306 | ··<a·href="#matching-binaries"·class="hover-link"> |
| 307 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 307 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 308 | ··</a> | 308 | ··</a> |
| 309 | ··<span·class="text">Matching·Binaries</span> | 309 | ··<span·class="text">Matching·Binaries</span> |
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| 119 | ··<a·href="#introduction"·class="hover-link"> | 119 | ··<a·href="#introduction"·class="hover-link"> |
| 120 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 120 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 121 | ··</a> | 121 | ··</a> |
| 122 | ··<span·class="text">Introduction</span> | 122 | ··<span·class="text">Introduction</span> |
| 123 | </h2> | 123 | </h2> |
| 124 | <p>The·complete·specification·for·the·bit·syntax·appears·in·the | 124 | <p>The·complete·specification·for·the·bit·syntax·appears·in·the |
| 125 | <a·href="../../doc/system/expressions.html#bit-syntax-expressions">Reference·Manual</a>.</p><p>In·Erlang,·a·Bin·is·used·for·constructing·binaries·and·matching·binary·patterns. | 125 | <a·href="../../doc/system/expressions.html#bit-syntax-expressions">Reference·Manual</a>.</p><p>In·Erlang,·a·Bin·is·used·for·constructing·binaries·and·matching·binary·patterns. |
| 126 | A·Bin·is·written·with·the·following·syntax:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 126 | A·Bin·is·written·with·the·following·syntax:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8214196851-1"><<</span><span·class="n">E1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">E2</span><span·class="p">,</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·cla[·...·truncated·by·diffoscope;·len:·81,·SHA:·737e4b61b86a495489fa38c9ba74a1a0eb99594e108b2506cd67cc69de0b89ed·...·]-1">>></span></code></pre><p>A·Bin·is·a·low-level·sequence·of·bits·or·bytes.·The·purpose·of·a·Bin·is·to |
| 127 | enable·construction·of·binaries:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Bin</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 127 | enable·construction·of·binaries:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Bin</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="1760365688-1"><<</span><span·class="n">E1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">E2</span><span·class="p">,</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·cla[·...·truncated·by·diffoscope;·len:·582,·SHA:·200a6b425aacc2ae159bae32c02e9730624acb517ffb212e981bd976d57757ac·...·]-1">>></span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Bin</span></code></pre><p>Here,·<code·class="inline">Bin</code>·is·bound·and·the·elements·are·bound·or·unbound,·as·in·any·match.</p><p>A·Bin·does·not·need·to·consist·of·a·whole·number·of·bytes.</p><p>A·<em>bitstring</em>·is·a·sequence·of·zero·or·more·bits,·where·the·number·of·bits·does |
| 128 | not·need·to·be·divisible·by·8.·If·the·number·of·bits·is·divisible·by·8,·the | 128 | not·need·to·be·divisible·by·8.·If·the·number·of·bits·is·divisible·by·8,·the |
| 129 | bitstring·is·also·a·binary.</p><p>Each·element·specifies·a·certain·<em>segment</em>·of·the·bitstring.·A·segment·is·a·set | 129 | bitstring·is·also·a·binary.</p><p>Each·element·specifies·a·certain·<em>segment</em>·of·the·bitstring.·A·segment·is·a·set |
| 130 | of·contiguous·bits·of·the·binary·(not·necessarily·on·a·byte·boundary).·The·first | 130 | of·contiguous·bits·of·the·binary·(not·necessarily·on·a·byte·boundary).·The·first |
| 131 | element·specifies·the·initial·segment,·the·second·element·specifies·the | 131 | element·specifies·the·initial·segment,·the·second·element·specifies·the |
| 132 | following·segment,·and·so·on.</p><p>The·following·examples·illustrate·how·binaries·are·constructed,·or·matched,·and | 132 | following·segment,·and·so·on.</p><p>The·following·examples·illustrate·how·binaries·are·constructed,·or·matched,·and |
| 133 | how·elements·and·tails·are·specified.</p><h3·id="examples"·class="section-heading"> | 133 | how·elements·and·tails·are·specified.</p><h3·id="examples"·class="section-heading"> |
| 134 | ··<a·href="#examples"·class="hover-link"> | 134 | ··<a·href="#examples"·class="hover-link"> |
| 135 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 135 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 136 | ··</a> | 136 | ··</a> |
| 137 | ··<span·class="text">Examples</span> | 137 | ··<span·class="text">Examples</span> |
| 138 | </h3> | 138 | </h3> |
| 139 | <p><em>Example·1:</em>·A·binary·can·be·constructed·from·a·set·of·constants·or·a·string | 139 | <p><em>Example·1:</em>·A·binary·can·be·constructed·from·a·set·of·constants·or·a·string |
| 140 | literal:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Bin11</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="0 | 140 | literal:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Bin11</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="0498019869-1"><<</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">17</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">42</span><span·class="p"·data-group-id="0498019869-1">>></span><span·class="p">,</span><span·class="w"> |
| 141 | </span><span·class="n">Bin12</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="0 | 141 | </span><span·class="n">Bin12</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="0498019869-2"><<</span><span·class="s">"abc"</span><span·class="p"·data-group-id="0498019869-2">>></span></code></pre><p>This·gives·two·binaries·of·size·3,·with·the·following·evaluations:</p><ul><li><a·href="../../erts-15.2.3/doc/html/erlang.html#binary_to_list/1"><code·class="inline">binary_to_list(Bin11)</code></a>·evaluates·to·<code·class="inline">[1,·17,·42]</code>.</li><li><a·href="../../erts-15.2.3/doc/html/erlang.html#binary_to_list/1"><code·class="inline">binary_to_list(Bin12)</code></a>·evaluates·to·<code·class="inline">[97,·98,·99]</code>.</li></ul><p><em>Example·2:</em>Similarly,·a·binary·can·be·constructed·from·a·set·of·bound |
| 142 | variables:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">A</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">B</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">17</span><span·class="p">,</span><span·class="w">·</span><span·class="n">C</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">42</span><span·class="p">,</span><span·class="w"> | 142 | variables:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">A</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">B</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">17</span><span·class="p">,</span><span·class="w">·</span><span·class="n">C</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">42</span><span·class="p">,</span><span·class="w"> |
| 143 | </span><span·class="n">Bin2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 143 | </span><span·class="n">Bin2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="1131799853-1"><<</span><span·class="n">A</span><span·class="p">,</span><span·class="w">·</span><span·class="n">B</span><span·class="p">,</span><span·class="w">·</span><span·class="n">C</span><span·class="p">:</span><span·class="mi">16</span><span·cla[·...·truncated·by·diffoscope;·len:·32,·SHA:·a9acf34a446a5c04b7fa66bbd91e53920045635666ef38718063a3d78ab3f6ff·...·]-1">>></span></code></pre><p>This·gives·a·binary·of·size·4.·Here,·a·<em>size·expression</em>·is·used·for·the |
| 144 | variable·<code·class="inline">C</code>·to·specify·a·16-bits·segment·of·<code·class="inline">Bin2</code>.</p><p><a·href="../../erts-15.2.3/doc/html/erlang.html#binary_to_list/1"><code·class="inline">binary_to_list(Bin2)</code></a>·evaluates·to·<code·class="inline">[1,·17,·00,·42]</code>.</p><p><em>Example·3:</em>·A·Bin·can·also·be·used·for·matching.·<code·class="inline">D</code>,·<code·class="inline">E</code>,·and·<code·class="inline">F</code>·are·unbound | 144 | variable·<code·class="inline">C</code>·to·specify·a·16-bits·segment·of·<code·class="inline">Bin2</code>.</p><p><a·href="../../erts-15.2.3/doc/html/erlang.html#binary_to_list/1"><code·class="inline">binary_to_list(Bin2)</code></a>·evaluates·to·<code·class="inline">[1,·17,·00,·42]</code>.</p><p><em>Example·3:</em>·A·Bin·can·also·be·used·for·matching.·<code·class="inline">D</code>,·<code·class="inline">E</code>,·and·<code·class="inline">F</code>·are·unbound |
| 145 | variables,·and·<code·class="inline">Bin2</code>·is·bound,·as·in·Example·2:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="7 | 145 | variables,·and·<code·class="inline">Bin2</code>·is·bound,·as·in·Example·2:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="9770213697-1"><<</span><span·class="n">D</span><span·class="p">:</span><span·class="mi">16</span><span·class="p">,</span><span·class="w">·</span><span·class="n">E</span><span·class="p">,</span><span·class="w">·</span><span·class="n">F</span><span·cla[·...·truncated·by·diffoscope;·len:·86,·SHA:·e97bdf0b01b67ed7a0d2c25e02741410849614bb41181379eff02bde73d20888·...·]-1">>></span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Bin2</span></code></pre><p>This·gives·<code·class="inline">D·=·273</code>,·<code·class="inline">E·=·00</code>,·and·F·binds·to·a·binary·of·size·1: |
| 146 | <code·class="inline">binary_to_list(F)·=·[42]</code>.</p><p><em>Example·4:</em>·The·following·is·a·more·elaborate·example·of·matching.·Here, | 146 | <code·class="inline">binary_to_list(F)·=·[42]</code>.</p><p><em>Example·4:</em>·The·following·is·a·more·elaborate·example·of·matching.·Here, |
| 147 | <code·class="inline">Dgram</code>·is·bound·to·the·consecutive·bytes·of·an·IP·datagram·of·IP·protocol | 147 | <code·class="inline">Dgram</code>·is·bound·to·the·consecutive·bytes·of·an·IP·datagram·of·IP·protocol |
| 148 | version·4.·The·ambition·is·to·extract·the·header·and·the·data·of·the·datagram:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id=" | 148 | version·4.·The·ambition·is·to·extract·the·header·and·the·data·of·the·datagram:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="4035449309-1">(</span><span·class="n">IP_VERSION</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">4</span><span·class="p"·data-group-id="4035449309-1">)</span><span·class="p">.</span><span·class="w"> |
| 149 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id=" | 149 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="4035449309-2">(</span><span·class="n">IP_MIN_HDR_LEN</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">5</span><span·class="p"·data-group-id="4035449309-2">)</span><span·class="p">.</span><span·class="w"> |
| 150 | </span><span·class="n">DgramSize</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">byte_size</span><span·class="p"·data-group-id=" | 150 | </span><span·class="n">DgramSize</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">byte_size</span><span·class="p"·data-group-id="4035449309-3">(</span><span·class="n">Dgram</span><span·class="p"·data-group-id="4035449309-3">)</span><span·class="p">,</span><span·class="w"> |
| 151 | </span><span·class="k">case</span><span·class="w">·</span><span·class="n">Dgram</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> | 151 | </span><span·class="k">case</span><span·class="w">·</span><span·class="n">Dgram</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 152 | ····</span><span·class="p"·data-group-id=" | 152 | ····</span><span·class="p"·data-group-id="4035449309-4"><<</span><span·class="o">?</span><span·class="n">IP_VERSION</span><span·class="p">:</span><span·class="mi">4</span><span·class="p">,</span><span·class="w">·</span><span·class="n">HLen</span><span·class="p">:</span><span·class="mi">4</span><span·class="p">,</span><span·class="w">·</span><span·class="n">SrvcType</span><span·class="p">:</span><span·class="mi">8</span><span·class="p">,</span><span·class="w">·</span><span·class="n">TotLen</span><span·class="p">:</span><span·class="mi">16</span><span·class="p">,</span><span·class="w"> |
| 153 | ······</span><span·class="n">ID</span><span·class="p">:</span><span·class="mi">16</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Flgs</span><span·class="p">:</span><span·class="mi">3</span><span·class="p">,</span><span·class="w">·</span><span·class="n">FragOff</span><span·class="p">:</span><span·class="mi">13</span><span·class="p">,</span><span·class="w"> | 153 | ······</span><span·class="n">ID</span><span·class="p">:</span><span·class="mi">16</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Flgs</span><span·class="p">:</span><span·class="mi">3</span><span·class="p">,</span><span·class="w">·</span><span·class="n">FragOff</span><span·class="p">:</span><span·class="mi">13</span><span·class="p">,</span><span·class="w"> |
| 154 | ······</span><span·class="n">TTL</span><span·class="p">:</span><span·class="mi">8</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Proto</span><span·class="p">:</span><span·class="mi">8</span><span·class="p">,</span><span·class="w">·</span><span·class="n">HdrChkSum</span><span·class="p">:</span><span·class="mi">16</span><span·class="p">,</span><span·class="w"> | 154 | ······</span><span·class="n">TTL</span><span·class="p">:</span><span·class="mi">8</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Proto</span><span·class="p">:</span><span·class="mi">8</span><span·class="p">,</span><span·class="w">·</span><span·class="n">HdrChkSum</span><span·class="p">:</span><span·class="mi">16</span><span·class="p">,</span><span·class="w"> |
| 155 | ······</span><span·class="n">SrcIP</span><span·class="p">:</span><span·class="mi">32</span><span·class="p">,</span><span·class="w"> | 155 | ······</span><span·class="n">SrcIP</span><span·class="p">:</span><span·class="mi">32</span><span·class="p">,</span><span·class="w"> |
| 156 | ······</span><span·class="n">DestIP</span><span·class="p">:</span><span·class="mi">32</span><span·class="p">,</span><span·class="w">·</span><span·class="n">RestDgram</span><span·class="o">/</span><span·class="ss">binary</span><span·class="p"·data-group-id=" | 156 | ······</span><span·class="n">DestIP</span><span·class="p">:</span><span·class="mi">32</span><span·class="p">,</span><span·class="w">·</span><span·class="n">RestDgram</span><span·class="o">/</span><span·class="ss">binary</span><span·class="p"·data-group-id="4035449309-4">>></span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="n">HLen</span><span·class="o">>=</span><span·class="mi">5</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">4</span><span·class="o">*</span><span·class="n">HLen</span><span·class="o">=<</span><span·class="n">DgramSize</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 157 | ········</span><span·class="n">OptsLen</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">4</span><span·class="o">*</span><span·class="p"·data-group-id=" | 157 | ········</span><span·class="n">OptsLen</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">4</span><span·class="o">*</span><span·class="p"·data-group-id="4035449309-5">(</span><span·class="n">HLen</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">?</span><span·class="n">IP_MIN_HDR_LEN</span><span·class="p"·data-group-id="4035449309-5">)</span><span·class="p">,</span><span·class="w"> |
| 158 | ········</span><span·class="p"·data-group-id=" | 158 | ········</span><span·class="p"·data-group-id="4035449309-6"><<</span><span·class="n">Opts</span><span·class="p">:</span><span·class="n">OptsLen</span><span·class="o">/</span><span·class="ss">binary</span><span·class="p">,</span><span·class="n">Data</span><span·class="o">/</span><span·class="ss">[·...·truncated·by·diffoscope;·len:·54,·SHA:·c86ffde5b838d442d1ced6d558c4d77f50a61beb64efddf79d909d4936054943·...·]-6">>></span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">RestDgram</span><span·class="p">,</span><span·class="w"> |
| 159 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 159 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 160 | </span><span·class="k">end</span><span·class="p">.</span></code></pre><p>Here,·the·segment·corresponding·to·the·<code·class="inline">Opts</code>·variable·has·a·<em>type·modifier</em>, | 160 | </span><span·class="k">end</span><span·class="p">.</span></code></pre><p>Here,·the·segment·corresponding·to·the·<code·class="inline">Opts</code>·variable·has·a·<em>type·modifier</em>, |
| 161 | specifying·that·<code·class="inline">Opts</code>·is·to·bind·to·a·binary.·All·other·variables·have·the | 161 | specifying·that·<code·class="inline">Opts</code>·is·to·bind·to·a·binary.·All·other·variables·have·the |
| 162 | default·type·equal·to·unsigned·integer.</p><p>An·IP·datagram·header·is·of·variable·length.·This·length·is·measured·in·the | 162 | default·type·equal·to·unsigned·integer.</p><p>An·IP·datagram·header·is·of·variable·length.·This·length·is·measured·in·the |
| 163 | number·of·32-bit·words·and·is·given·in·the·segment·corresponding·to·<code·class="inline">HLen</code>.·The | 163 | number·of·32-bit·words·and·is·given·in·the·segment·corresponding·to·<code·class="inline">HLen</code>.·The |
| 164 | minimum·value·of·<code·class="inline">HLen</code>·is·5.·It·is·the·segment·corresponding·to·<code·class="inline">Opts</code>·that·is | 164 | minimum·value·of·<code·class="inline">HLen</code>·is·5.·It·is·the·segment·corresponding·to·<code·class="inline">Opts</code>·that·is |
| 165 | variable,·so·if·<code·class="inline">HLen</code>·is·equal·to·5,·<code·class="inline">Opts</code>·becomes·an·empty·binary.</p><p>The·tail·variables·<code·class="inline">RestDgram</code>·and·<code·class="inline">Data</code>·bind·to·binaries,·as·all·tail | 165 | variable,·so·if·<code·class="inline">HLen</code>·is·equal·to·5,·<code·class="inline">Opts</code>·becomes·an·empty·binary.</p><p>The·tail·variables·<code·class="inline">RestDgram</code>·and·<code·class="inline">Data</code>·bind·to·binaries,·as·all·tail |
| Offset 218, 80 lines modified | Offset 218, 80 lines modified | ||
| 218 | <p>This·section·describes·the·rules·for·constructing·binaries·using·the·bit·syntax. | 218 | <p>This·section·describes·the·rules·for·constructing·binaries·using·the·bit·syntax. |
| 219 | Unlike·when·constructing·lists·or·tuples,·the·construction·of·a·binary·can·fail | 219 | Unlike·when·constructing·lists·or·tuples,·the·construction·of·a·binary·can·fail |
| 220 | with·a·<code·class="inline">badarg</code>·exception.</p><p>There·can·be·zero·or·more·segments·in·a·binary·to·be·constructed.·The·expression | 220 | with·a·<code·class="inline">badarg</code>·exception.</p><p>There·can·be·zero·or·more·segments·in·a·binary·to·be·constructed.·The·expression |
| 221 | <code·class="inline"><<>></code>·constructs·a·zero·length·binary.</p><p>Each·segment·in·a·binary·can·consist·of·zero·or·more·bits.·There·are·no | 221 | <code·class="inline"><<>></code>·constructs·a·zero·length·binary.</p><p>Each·segment·in·a·binary·can·consist·of·zero·or·more·bits.·There·are·no |
| 222 | alignment·rules·for·individual·segments·of·type·<code·class="inline">integer</code>·and·<code·class="inline">float</code>.·For | 222 | alignment·rules·for·individual·segments·of·type·<code·class="inline">integer</code>·and·<code·class="inline">float</code>.·For |
| 223 | binaries·and·bitstrings·without·size,·the·unit·specifies·the·alignment.·Since | 223 | binaries·and·bitstrings·without·size,·the·unit·specifies·the·alignment.·Since |
| 224 | the·default·alignment·for·the·<code·class="inline">binary</code>·type·is·8,·the·size·of·a·binary·segment | 224 | the·default·alignment·for·the·<code·class="inline">binary</code>·type·is·8,·the·size·of·a·binary·segment |
| 225 | must·be·a·multiple·of·8·bits,·that·is,·only·whole·bytes.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 225 | must·be·a·multiple·of·8·bits,·that·is,·only·whole·bytes.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="6912285098-1"><<</span><span·class="n">Bin</span><span·class="o">/</span><span·class="ss">binary</span><span·class="p">,</span><span·class="n">Bitstring</span><span·class="o">/</span><span·class="ss">bitstring</span><span·class="p"·data-group-id="691[·...·truncated·by·diffoscope;·len:·7,·SHA:·0014159967cbf5d51560d282b97f9860b301d6da7df5cf6679c4479da3dc6c9b·...·]-1">>></span></code></pre><p>The·variable·<code·class="inline">Bin</code>·must·contain·a·whole·number·of·bytes,·because·the·<code·class="inline">binary</code> |
| 226 | type·defaults·to·<code·class="inline">unit:8</code>.·A·<code·class="inline">badarg</code>·exception·is·generated·if·<code·class="inline">Bin</code>·consist | 226 | type·defaults·to·<code·class="inline">unit:8</code>.·A·<code·class="inline">badarg</code>·exception·is·generated·if·<code·class="inline">Bin</code>·consist |
| 227 | of,·for·example,·17·bits.</p><p>The·<code·class="inline">Bitstring</code>·variable·can·consist·of·any·number·of·bits,·for·example,·0,·1, | 227 | of,·for·example,·17·bits.</p><p>The·<code·class="inline">Bitstring</code>·variable·can·consist·of·any·number·of·bits,·for·example,·0,·1, |
| 228 | 8,·11,·17,·42,·and·so·on.·This·is·because·the·default·<code·class="inline">unit</code>·for·bitstrings | 228 | 8,·11,·17,·42,·and·so·on.·This·is·because·the·default·<code·class="inline">unit</code>·for·bitstrings |
| 229 | is·1.</p><p>For·clarity,·it·is·recommended·not·to·change·the·unit·size·for·binaries. | 229 | is·1.</p><p>For·clarity,·it·is·recommended·not·to·change·the·unit·size·for·binaries. |
| 230 | Instead,·use·<code·class="inline">binary</code>·when·you·need·byte·alignment·and·<code·class="inline">bitstring</code>·when·you·need | 230 | Instead,·use·<code·class="inline">binary</code>·when·you·need·byte·alignment·and·<code·class="inline">bitstring</code>·when·you·need |
| 231 | bit·alignment.</p><p>The·following·example·successfully·constructs·a·bitstring·of·7·bits,·provided | 231 | bit·alignment.</p><p>The·following·example·successfully·constructs·a·bitstring·of·7·bits,·provided |
| 232 | that·all·of·X·and·Y·are·integers:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 232 | that·all·of·X·and·Y·are·integers:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8044963981-1"><<</span><span·class="n">X</span><span·class="p">:</span><span·class="mi">1</span><span·class="p">,</span><span·class="n">Y</span><span·class="p">:</span><span·class="mi">6</span><span·class="p"·data-group-id="8044963981-1">>></span></code></pre><p>As·mentioned·earlier,·segments·have·the·following·general·syntax:</p><p><code·class="inline">Value:Size/TypeSpecifierList</code></p><p>When·constructing·binaries,·<code·class="inline">Value</code>·and·<code·class="inline">Size</code>·can·be·any·Erlang·expression. |
| 233 | However,·for·syntactical·reasons,·both·<code·class="inline">Value</code>·and·<code·class="inline">Size</code>·must·be·enclosed·in | 233 | However,·for·syntactical·reasons,·both·<code·class="inline">Value</code>·and·<code·class="inline">Size</code>·must·be·enclosed·in |
| 234 | parenthesis·if·the·expression·consists·of·anything·more·than·a·single·literal·or | 234 | parenthesis·if·the·expression·consists·of·anything·more·than·a·single·literal·or |
| 235 | a·variable.·The·following·gives·a·compiler·syntax·error:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 235 | a·variable.·The·following·gives·a·compiler·syntax·error:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="4506235260-1"><<</span><span·class="n">X</span><span·class="o">+</span><span·class="mi">1</span><span·class="p">:</span><span·class="mi">8</span><span·class="p"·data-group-id="4506235260-1">>></span></code></pre><p>This·expression·must·be·rewritten·into·the·following,·to·be·accepted·by·the |
| 236 | compiler:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 236 | compiler:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="1318564889-1"><<</span><span·class="p"·data-group-id="1318564889-2">(</span><span·class="n">X</span><span·class="o">+</span><span·class="mi">1</span><span·class="p"·data-group-id="1318564889-2">)</span><span·class="p">:</span><span·class="mi">8</span[·...·truncated·by·diffoscope;·len:·42,·SHA:·aaa646dae4f6adf124d0f292b97049a9fe271ba57782d739e0ed3a7fbdc7bcef·...·]-1">>></span></code></pre><h3·id="including-literal-strings"·class="section-heading"> |
| 237 | ··<a·href="#including-literal-strings"·class="hover-link"> | 237 | ··<a·href="#including-literal-strings"·class="hover-link"> |
| 238 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 238 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 239 | ··</a> | 239 | ··</a> |
| 240 | ··<span·class="text">Including·Literal·Strings</span> | 240 | ··<span·class="text">Including·Literal·Strings</span> |
| 241 | </h3> | 241 | </h3> |
| 242 | <p>A·literal·string·can·be·written·instead·of·an·element:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 242 | <p>A·literal·string·can·be·written·instead·of·an·element:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="0030295283-1"><<</span><span·class="s">"hello"</span><span·class="p"·data-group-id="0030295283-1">>></span></code></pre><p>This·is·syntactic·sugar·for·the·following:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·d[·...·truncated·by·diffoscope;·len:·310,·SHA:·42177f7104fa479190486c31ec10a4b3ae2b01702736324dd2d55b1ddcf04c0c·...·]-1">>></span></code></pre><h2·id="matching-binaries"·class="section-heading"> |
| 243 | ··<a·href="#matching-binaries"·class="hover-link"> | 243 | ··<a·href="#matching-binaries"·class="hover-link"> |
| 244 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 244 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 245 | ··</a> | 245 | ··</a> |
| 246 | ··<span·class="text">Matching·Binaries</span> | 246 | ··<span·class="text">Matching·Binaries</span> |
| 247 | </h2> | 247 | </h2> |
| 248 | <p>This·section·describes·the·rules·for·matching·binaries,·using·the·bit·syntax.</p><p>There·can·be·zero·or·more·segments·in·a·binary·pattern.·A·binary·pattern·can | 248 | <p>This·section·describes·the·rules·for·matching·binaries,·using·the·bit·syntax.</p><p>There·can·be·zero·or·more·segments·in·a·binary·pattern.·A·binary·pattern·can |
| 249 | occur·wherever·patterns·are·allowed,·including·inside·other·patterns.·Binary | 249 | occur·wherever·patterns·are·allowed,·including·inside·other·patterns.·Binary |
| 250 | patterns·cannot·be·nested.·The·pattern·<code·class="inline"><<>></code>·matches·a·zero·length·binary.</p><p>Each·segment·in·a·binary·can·consist·of·zero·or·more·bits.·A·segment·of·type | 250 | patterns·cannot·be·nested.·The·pattern·<code·class="inline"><<>></code>·matches·a·zero·length·binary.</p><p>Each·segment·in·a·binary·can·consist·of·zero·or·more·bits.·A·segment·of·type |
| 251 | <code·class="inline">binary</code>·must·have·a·size·evenly·divisible·by·8·(or·divisible·by·the·unit·size, | 251 | <code·class="inline">binary</code>·must·have·a·size·evenly·divisible·by·8·(or·divisible·by·the·unit·size, |
| 252 | if·the·unit·size·has·been·changed).·A·segment·of·type·<code·class="inline">bitstring</code>·has·no | 252 | if·the·unit·size·has·been·changed).·A·segment·of·type·<code·class="inline">bitstring</code>·has·no |
| 253 | restrictions·on·the·size.·A·segment·of·type·<code·class="inline">float</code>·must·have·size·64·or·32.</p><p>As·mentioned·earlier,·segments·have·the·following·general·syntax:</p><p><code·class="inline">Value:Size/TypeSpecifierList</code></p><p>When·matching·<code·class="inline">Value</code>,·value·must·be·either·a·variable·or·an·integer,·or·a | 253 | restrictions·on·the·size.·A·segment·of·type·<code·class="inline">float</code>·must·have·size·64·or·32.</p><p>As·mentioned·earlier,·segments·have·the·following·general·syntax:</p><p><code·class="inline">Value:Size/TypeSpecifierList</code></p><p>When·matching·<code·class="inline">Value</code>,·value·must·be·either·a·variable·or·an·integer,·or·a |
| 254 | floating·point·literal.·Expressions·are·not·allowed.</p><p><code·class="inline">Size</code>·must·be·a | 254 | floating·point·literal.·Expressions·are·not·allowed.</p><p><code·class="inline">Size</code>·must·be·a |
| 255 | <a·href="../../doc/system/expressions.html#guard-expressions">guard·expression</a>,·which·can·use | 255 | <a·href="../../doc/system/expressions.html#guard-expressions">guard·expression</a>,·which·can·use |
| 256 | literals·and·previously·bound·variables.·The·following·is·not·allowed:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">foo</span><span·class="p"·data-group-id=" | 256 | literals·and·previously·bound·variables.·The·following·is·not·allowed:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">foo</span><span·class="p"·data-group-id="3299574070-1">(</span><span·class="n">N</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3299574070-2"><<</span><span·class="n">X</span><span·class="p">:</span><span·class="n">N</span><span·class="p">,</span><span·[·...·truncated·by·diffoscope;·len:·173,·SHA:·6138435c081c8ac477c54a87852098b91890d690786aaab2d435288ebb1c32ef·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 257 | ···</span><span·class="p"·data-group-id="0877689539-3">{</span><span·class="n">X</span><span·class="p">,</span><span·class="n">T</span><span·class="p"·data-group-id="0877689539-3">}</span><span·class="p">.</span></code></pre><p>The·two·occurrences·of·<code·class="inline">N</code>·are·not·related.·The·compiler·will·complain·that·the | ||
| 258 | 257 | ···</span><span·class="p"·data-group-id="3299574070-3">{</span><span·class="n">X</span><span·class="p">,</span><span·class="n">T</span><span·class="p"·data-group-id="3299574070-3">}</span><span·class="p">.</span></code></pre><p>The·two·occurrences·of·<code[·...·truncated·by·diffoscope;·len:·77,·SHA:·b79cd7a1b3a5d65635c58ed8a311bdfe1e6d3c335245d3f0a149a77a129ced39·...·] | |
| 258 | <code·class="inline">N</code>·in·the·size·field·is·unbound.</p><p>The·correct·way·to·write·this·example·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">foo</span><span·class="p"·data-group-id="4329037273-1">(</span><span·class="n">N</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Bin</span><span·class="p"·data-group-id="4329037273-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | ||
| 259 | ···</span><span·class="p"·data-group-id=" | 259 | ···</span><span·class="p"·data-group-id="4329037273-2"><<</span><span·class="n">X</span><span·class="p">:</span><span·class="n">N</span><span·class="p">,</span><span·class="n">T</span><span·class="o">/</span><span·class="ss">binary</span><span·class="p"·data-group-id="4329037273-2">>></span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Bin</span><span·class="p">,</span><span·class="w"> |
| 260 | ···</span><span·class="p"·data-group-id=" | 260 | ···</span><span·class="p"·data-group-id="4329037273-3">{</span><span·class="n">X</span><span·class="p">,</span><span·class="n">T</span><span·class="p"·data-group-id="4329037273-3">}</span><span·class="p">.</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Before·OTP·23,·<code·class="inline">Size</code>·was·restricted·to·be·an·integer·or·a·variable·bound·to |
| 261 | an·integer.</p></section><h3·id="binding-and-using-a-size-variable"·class="section-heading"> | 261 | an·integer.</p></section><h3·id="binding-and-using-a-size-variable"·class="section-heading"> |
| 262 | ··<a·href="#binding-and-using-a-size-variable"·class="hover-link"> | 262 | ··<a·href="#binding-and-using-a-size-variable"·class="hover-link"> |
| 263 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 263 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 264 | ··</a> | 264 | ··</a> |
| 265 | ··<span·class="text">Binding·and·Using·a·Size·Variable</span> | 265 | ··<span·class="text">Binding·and·Using·a·Size·Variable</span> |
| 266 | </h3> | 266 | </h3> |
| 267 | <p>There·is·one·exception·to·the·rule·that·a·variable·that·is·used·as·size·must·be | 267 | <p>There·is·one·exception·to·the·rule·that·a·variable·that·is·used·as·size·must·be |
| 268 | previously·bound.·It·is·possible·to·match·and·bind·a·variable,·and·use·it·as·a | 268 | previously·bound.·It·is·possible·to·match·and·bind·a·variable,·and·use·it·as·a |
| 269 | size·within·the·same·binary·pattern.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">bar</span><span·class="p"·data-group-id=" | 269 | size·within·the·same·binary·pattern.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">bar</span><span·class="p"·data-group-id="7374325462-1">(</span><span·class="p"·data-group-id="7374325462-2"><<</span><span·class="n">Sz</span><span·class="p">:</span><span·class="mi">8</span><span·class="p">,</span><span·class="n">Payload</span><span·class="p">:</span><span·class="n">Sz</sp[·...·truncated·by·diffoscope;·len:·364,·SHA:·4e9f0f93f6d491f556d9a4f74bbb756ef2d4cc65a174ddfda0a6b3164001a3a5·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 270 | ···</span><span·class="p"·data-group-id="7374325462-3">{</span><span·class="n">Payload</span><span·class="p">,</span><span·class="n">Rest</span><span·class="p"·data-group-id="7374325462-3">}</span><span·class="p">.</span></code></pre><p>Here·<code·class="inline">Sz</code>·is·bound·to·the·value·in·the·first·byte·of·the·binary.·<code·class="inline">Sz</code>·is·then | ||
| 271 | used·at·the·number·of·bytes·to·match·out·as·a·binary.</p><p>Starting·in·OTP·23,·the·size·can·be·a·guard·expression:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">bar</span><span·class="p"·data-group-id="8153193544-1">(</span><span·class="p"·data-group-id="8153193544-2"><<</span><span·class="n">Sz</span><span·class="p">:</span><span·class="mi">8</span><span·class="p">,</span><span·class="n">Payload</span><span·class="p">:</span><span·class="p"·data-group-id="8153193544-3">(</span><span·class="p"·data-group-id="8153193544-4">(</span><span·class="n">Sz</span><span·class="o">-</span><span·class="mi">1</span><span·class="p"·data-group-id="8153193544-4">)</span><span·class="o">*</span><span·class="mi">8</span><span·class="p"·data-group-id="8153193544-3">)</span><span·class="o">/</span><span·class="ss">binary</span><span·class="p">,</span><span·class="n">Rest</span><span·class="o">/</span><span·class="ss">binary</span><span·class="p"·data-group-id="8153193544-2">>></span><span·class="p"·data-group-id="8153193544-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | ||
| 270 | ···</span><span·class="p"·data-group-id=" | 272 | ···</span><span·class="p"·data-group-id="8153193544-5">{</span><span·class="n">Payload</span><span·class="p">,</span><span·class="n">Rest</span><span·class="p"·data-group-id="8153193544-5">}</span><span·class="p">.</span></code></pre><p>Here·<code·class="inline">Sz</code>·is·the·combined·size·of·[·...·truncated·by·diffoscope;·len:·46,·SHA:·d0b6d114708e778d0e39df8bdf4348dbe99c13881c34a8eaa4857ce97f752e5a·...·] |
| 271 | used·at·the·number·of·bytes·to·match·out·as·a·binary.</p><p>Starting·in·OTP·23,·the·size·can·be·a·guard·expression:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">bar</span><span·class="p"·data-group-id="2708874570-1">(</span><span·class="p"·data-group-id="2708874570-2"><<</span><span·class="n">Sz</span><span·class="p">:</span><span·class="mi">8</span><span·class="p">,</span><span·class="n">Payload</span><span·class="p">:</span><span·class="p"·data-group-id="2708874570-3">(</span><span·class="p"·data-group-id="2708874570-4">(</span><span·class="n">Sz</span><span·class="o">-</span><span·class="mi">1</span><span·class="p"·data-group-id="2708874570-4">)</span><span·class="o">*</span><span·class="mi">8</span><span·class="p"·data-group-id="2708874570-3">)</span><span·class="o">/</span><span·class="ss">binary</span><span·class="p">,</span><span·class="n">Rest</span><span·class="o">/</span><span·class="ss">binary</span><span·class="p"·data-group-id="2708874570-2">>></span><span·class="p"·data-group-id="2708874570-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | ||
| 272 | ···</span><span·class="p"·data-group-id="2708874570-5">{</span><span·class="n">Payload</span><span·class="p">,</span><span·class="n">Rest</span><span·class="p"·data-group-id="2708874570-5">}</span><span·class="p">.</span></code></pre><p>Here·<code·class="inline">Sz</code>·is·the·combined·size·of·the·header·and·the·payload,·so·we·will·need·to | ||
| 273 | subtract·one·byte·to·get·the·size·of·the·payload.</p><h3·id="getting-the-rest-of-the-binary-or-bitstring"·class="section-heading"> | 273 | subtract·one·byte·to·get·the·size·of·the·payload.</p><h3·id="getting-the-rest-of-the-binary-or-bitstring"·class="section-heading"> |
| 274 | ··<a·href="#getting-the-rest-of-the-binary-or-bitstring"·class="hover-link"> | 274 | ··<a·href="#getting-the-rest-of-the-binary-or-bitstring"·class="hover-link"> |
| 275 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 275 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 276 | ··</a> | 276 | ··</a> |
| 277 | ··<span·class="text">Getting·the·Rest·of·the·Binary·or·Bitstring</span> | 277 | ··<span·class="text">Getting·the·Rest·of·the·Binary·or·Bitstring</span> |
| 278 | </h3> | 278 | </h3> |
| 279 | <p>To·match·out·the·rest·of·a·binary,·specify·a·binary·field·without·size:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">foo</span><span·class="p"·data-group-id=" | 279 | <p>To·match·out·the·rest·of·a·binary,·specify·a·binary·field·without·size:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">foo</span><span·class="p"·data-group-id="4848141201-1">(</span><span·class="p"·data-group-id="4848141201-2"><<</span><span·class="n">A</span><span·class="p">:</span><span·class="mi">8</span><span·class="p">,</span><span·class="n">Rest</span><span·class="o">/</span><span·class="ss">binary</s[·...·truncated·by·diffoscope;·len:·784,·SHA:·d484351e13a967e7d729279e80cf01b26a246e5d6f275a00c22912475114d82d·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span></code></pre><p>There·are·no·restrictions·on·the·number·of·bits·in·the·tail.</p><h2·id="appending-to-a-binary"·class="section-heading"> |
| 280 | ··<a·href="#appending-to-a-binary"·class="hover-link"> | 280 | ··<a·href="#appending-to-a-binary"·class="hover-link"> |
| 281 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 281 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 282 | ··</a> | 282 | ··</a> |
| 283 | ··<span·class="text">Appending·to·a·Binary</span> | 283 | ··<span·class="text">Appending·to·a·Binary</span> |
| 284 | </h2> | 284 | </h2> |
| 285 | <p>Appending·to·a·binary·in·an·efficient·way·can·be·done·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">triples_to_bin</span><span·class="p"·data-group-id=" | 285 | <p>Appending·to·a·binary·in·an·efficient·way·can·be·done·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">triples_to_bin</span><span·class="p"·data-group-id="4641405555-1">(</span><span·class="n">T</span><span·class="p"·data-group-id="4641405555-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 286 | ····</span><span·class="nf">triples_to_bin</span><span·class="p"·data-group-id=" | 286 | ····</span><span·class="nf">triples_to_bin</span><span·class="p"·data-group-id="4641405555-2">(</span><span·class="n">T</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4641405555-3"><<</span><span·class="p"·data-group-id="4641405555-3">>></span><span·class="p"·data-group-id="4641405555-2">)</span><span·class="p">.</span><span·class="w"> |
| 287 | </span><span·class="nf">triples_to_bin</span><span·class="p"·data-group-id=" | 287 | </span><span·class="nf">triples_to_bin</span><span·class="p"·data-group-id="4641405555-4">(</span><span·class="p"·data-group-id="4641405555-5">[</span><span·class="p"·data-group-id="4641405555-6">{</span><span·class="n">X</span><span·class="p">,</span><span·class="n">Y</span><span·class="p">,</span><span·class="n">Z</span><span·cl[·...·truncated·by·diffoscope;·len:·309,·SHA:·ca55292a27d5cf3c13b589a2ef6d8e182f1a1a5f34d7d5b57f09822827181b93·...·]-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 288 | ····</span><span·class="nf">triples_to_bin</span><span·class="p"·data-group-id=" | 288 | ····</span><span·class="nf">triples_to_bin</span><span·class="p"·data-group-id="4641405555-7">(</span><span·class="n">T</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4641405555-8"><<</span><span·class="n">Acc</span><span·class="o">/</span><span·class="ss">binary</span><span·class="p">,</spa[·...·truncated·by·diffoscope;·len:·373,·SHA:·0ef4a0d71f0745cd060c55577937ed166470b053a79b974fb958623400324d12·...·]-7">)</span><span·class="p">;</span><span·class="w"> |
| 289 | </span><span·class="nf">triples_to_bin</span><span·class="p"·data-group-id=" | 289 | </span><span·class="nf">triples_to_bin</span><span·class="p"·data-group-id="4641405555-9">(</span><span·class="p"·data-group-id="4641405555-10">[</span><span·class="p"·data-group-id="4641405555-10">]</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Acc</span><span·class="p"·data-group-id="4641405555-9">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 290 | ····</span><span·class="n">Acc</span><span·class="p">.</span></code></pre> | 290 | ····</span><span·class="n">Acc</span><span·class="p">.</span></code></pre> |
| 291 | </div> | 291 | </div> |
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| 148 | external·program,·if·it·is·written·properly).</p><p>The·port·is·created·using·the·BIF·<a·href="../../erts-15.2.3/doc/html/erlang.html#open_port/2"><code·class="inline">open_port/2</code></a>·with | 148 | external·program,·if·it·is·written·properly).</p><p>The·port·is·created·using·the·BIF·<a·href="../../erts-15.2.3/doc/html/erlang.html#open_port/2"><code·class="inline">open_port/2</code></a>·with |
| 149 | <code·class="inline">{spawn,ExtPrg}</code>·as·the·first·argument.·The·string·<code·class="inline">ExtPrg</code>·is·the·name·of·the | 149 | <code·class="inline">{spawn,ExtPrg}</code>·as·the·first·argument.·The·string·<code·class="inline">ExtPrg</code>·is·the·name·of·the |
| 150 | external·program,·including·any·command·line·arguments.·The·second·argument·is·a | 150 | external·program,·including·any·command·line·arguments.·The·second·argument·is·a |
| 151 | list·of·options,·in·this·case·only·<code·class="inline">{packet,2}</code>.·This·option·says·that·a·2·byte | 151 | list·of·options,·in·this·case·only·<code·class="inline">{packet,2}</code>.·This·option·says·that·a·2·byte |
| 152 | length·indicator·is·to·be·used·to·simplify·the·communication·between·C·and | 152 | length·indicator·is·to·be·used·to·simplify·the·communication·between·C·and |
| 153 | Erlang.·The·Erlang·port·automatically·adds·the·length·indicator,·but·this·must | 153 | Erlang.·The·Erlang·port·automatically·adds·the·length·indicator,·but·this·must |
| 154 | be·done·explicitly·in·the·external·C·program.</p><p>The·process·is·also·set·to·trap·exits,·which·enables·detection·of·failure·of·the | 154 | be·done·explicitly·in·the·external·C·program.</p><p>The·process·is·also·set·to·trap·exits,·which·enables·detection·of·failure·of·the |
| 155 | external·program:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 155 | external·program:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="6342411522-1">(</span><span·class="ss">complex1</span><span·class="p"·data-group-id="6342411522-1">)</span><span·class="p">.</span><span·class="w"> |
| 156 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 156 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="6342411522-2">(</span><span·class="p"·data-group-id="6342411522-3">[</span><span·class="ss">start</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">init</span><span·class="p">/</span><sp[·...·truncated·by·diffoscope;·len:·116,·SHA:·7db673eb55ab17364f7052f3ef733ba59ee7509ea48637642c0680535a09f95a·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 157 | </span><span·class="nf">start</span><span·class="p"·data-group-id=" | 157 | </span><span·class="nf">start</span><span·class="p"·data-group-id="6342411522-4">(</span><span·class="n">ExtPrg</span><span·class="p"·data-group-id="6342411522-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 158 | ··</span><span·class="nf">spawn</span><span·class="p"·data-group-id=" | 158 | ··</span><span·class="nf">spawn</span><span·class="p"·data-group-id="6342411522-5">(</span><span·class="o">?</span><span·class="n">MODULE</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">init</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6342411522-6">[</span><spa[·...·truncated·by·diffoscope;·len:·119,·SHA:·115a7c181d680064e2e1f2980bb39b245b54e399d11b6bc4979f83851c7b0196·...·]-5">)</span><span·class="p">.</span><span·class="w"> |
| 159 | </span><span·class="nf">init</span><span·class="p"·data-group-id=" | 159 | </span><span·class="nf">init</span><span·class="p"·data-group-id="6342411522-7">(</span><span·class="n">ExtPrg</span><span·class="p"·data-group-id="6342411522-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 160 | ··</span><span·class="nf">register</span><span·class="p"·data-group-id=" | 160 | ··</span><span·class="nf">register</span><span·class="p"·data-group-id="6342411522-8">(</span><span·class="ss">complex</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="6342411522-9">(</span><span·class="p"·data-group-id="6342411522-9">)</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·20,·SHA:·52c1803760c33a696368b3fd74c37f5d54f5ef13566070563d8de07f1753aedd·...·]-8">)</span><span·class="p">,</span><span·class="w"> |
| 161 | ··</span><span·class="nf">process_flag</span><span·class="p"·data-group-id=" | 161 | ··</span><span·class="nf">process_flag</span><span·class="p"·data-group-id="6342411522-10">(</span><span·class="ss">trap_exit</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">true</span><span·class="p"·data-group-id="6342411522-10">)</span><span·class="p">,</span><span·class="w"> |
| 162 | ··</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">open_port</span><span·class="p"·data-group-id="5714967595-11">(</span><span·class="p"·data-group-id="5714967595-12">{</span><span·class="nb">spawn</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ExtPrg</span><span·class="p"·data-group-id="5714967595-12">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5714967595-13">[</span><span·class="p"·data-group-id="5714967595-14">{</span><span·class="ss">packet</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">2</span><span·class="p"·data-group-id="5714967595-14">}</span><span·class="p"·data-group-id="5714967595-13">]</span><span·class="p"·data-group-id="5714967595-11">)</span><span·class="p">,</span><span·class="w"> | ||
| 163 | ··</span><span·class="n | 162 | ··</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">open_port</span><span·class="p"·data-group-id="6342411522-11">(</span><span·class="p"·data-group-id="6342411522-12">{</span><span·class="nb">spawn</span><[·...·truncated·by·diffoscope;·len:·591,·SHA:·9fc0a9732c554a0dfdc5a3bb6380f378a1f2cc8d65e1189e3f1f7c1e6f3651b1·...·] |
| 163 | ··</span><span·class="nf">loop</span><span·class="p"·data-group-id="6342411522-15">(</span><span·class="n">Port</span><span·class="p"·data-group-id="6342411522-15">)</span><span·class="p">.</span></code></pre><p>Now·<code·class="inline">complex1:foo/1</code>·and·<code·class="inline">complex1:bar/1</code>·can·be·implemented.·Both·send·a | ||
| 164 | message·to·the·<code·class="inline">complex</code>·process·and·receive·the·following·replies:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">foo</span><span·class="p"·data-group-id=" | 164 | message·to·the·<code·class="inline">complex</code>·process·and·receive·the·following·replies:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">foo</span><span·class="p"·data-group-id="9889576020-1">(</span><span·class="n">X</span><span·class="p"·data-group-id="9889576020-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 165 | ··</span><span·class="nf">call_port</span><span·class="p"·data-group-id=" | 165 | ··</span><span·class="nf">call_port</span><span·class="p"·data-group-id="9889576020-2">(</span><span·class="p"·data-group-id="9889576020-3">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="n">X</span><span·class="p"·data-group-id="9889576020-3">}</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·12,·SHA:·0235b70a0b791cadc49835806d09209aab0ed8b9da9c1e08296407e3f51ad90c·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 166 | </span><span·class="nf">bar</span><span·class="p"·data-group-id=" | 166 | </span><span·class="nf">bar</span><span·class="p"·data-group-id="9889576020-4">(</span><span·class="n">Y</span><span·class="p"·data-group-id="9889576020-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 167 | ··</span><span·class="nf">call_port</span><span·class="p"·data-group-id=" | 167 | ··</span><span·class="nf">call_port</span><span·class="p"·data-group-id="9889576020-5">(</span><span·class="p"·data-group-id="9889576020-6">{</span><span·class="ss">bar</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Y</span><span·class="p"·data-group-id="9889576020-6">}</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·12,·SHA:·0235b70a0b791cadc49835806d09209aab0ed8b9da9c1e08296407e3f51ad90c·...·]-5">)</span><span·class="p">.</span><span·class="w"> |
| 168 | </span><span·class="nf">call_port</span><span·class="p"·data-group-id=" | 168 | </span><span·class="nf">call_port</span><span·class="p"·data-group-id="9889576020-7">(</span><span·class="n">Msg</span><span·class="p"·data-group-id="9889576020-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 169 | ··</span><span·class="ss">complex</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 169 | ··</span><span·class="ss">complex</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="9889576020-8">{</span><span·class="ss">call</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="9889576020-9">(</span><span·class="p"·data-group-id="9889576020-9">)</span><span·class="p">,</span>[·...·truncated·by·diffoscope;·len:·91,·SHA:·4ec6734344b2bc180dedf14980a15df4b9ccecb18b684e951f7c4ac383daf844·...·]-8">}</span><span·class="p">,</span><span·class="w"> |
| 170 | ··</span><span·class="k">receive</span><span·class="w"> | 170 | ··</span><span·class="k">receive</span><span·class="w"> |
| 171 | ····</span><span·class="p"·data-group-id=" | 171 | ····</span><span·class="p"·data-group-id="9889576020-10">{</span><span·class="ss">complex</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Result</span><span·class="p"·data-group-id="9889576020-10">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 172 | ······</span><span·class="n">Result</span><span·class="w"> | 172 | ······</span><span·class="n">Result</span><span·class="w"> |
| 173 | ··</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>The·<code·class="inline">complex</code>·process·does·the·following:</p><ul><li>Encodes·the·message·into·a·sequence·of·bytes.</li><li>Sends·it·to·the·port.</li><li>Waits·for·a·reply.</li><li>Decodes·the·reply.</li><li>Sends·it·back·to·the·caller:</li></ul><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">loop</span><span·class="p"·data-group-id=" | 173 | ··</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>The·<code·class="inline">complex</code>·process·does·the·following:</p><ul><li>Encodes·the·message·into·a·sequence·of·bytes.</li><li>Sends·it·to·the·port.</li><li>Waits·for·a·reply.</li><li>Decodes·the·reply.</li><li>Sends·it·back·to·the·caller:</li></ul><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">loop</span><span·class="p"·data-group-id="9428133622-1">(</span><span·class="n">Port</span><span·class="p"·data-group-id="9428133622-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 174 | ··</span><span·class="k">receive</span><span·class="w"> | 174 | ··</span><span·class="k">receive</span><span·class="w"> |
| 175 | ····</span><span·class="p"·data-group-id=" | 175 | ····</span><span·class="p"·data-group-id="9428133622-2">{</span><span·class="ss">call</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Caller</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p"·data-group-id="9428133622-2">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 176 | ······</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 176 | ······</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="9428133622-3">{</span><span·class="nf">self</span><span·class="p"·data-group-id="9428133622-4">(</span><span·class="p"·data-group-id="9428133622-4">)</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9428133622-5">{</span[·...·truncated·by·diffoscope;·len:·336,·SHA:·6d4f51af7285cced1138a81abe89c852224e3ec3fba9ded5e707732510084fd3·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 177 | ······</span><span·class="k">receive</span><span·class="w"> | 177 | ······</span><span·class="k">receive</span><span·class="w"> |
| 178 | ········</span><span·class="p"·data-group-id=" | 178 | ········</span><span·class="p"·data-group-id="9428133622-7">{</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9428133622-8">{</span><span·class="ss">data</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><sp[·...·truncated·by·diffoscope;·len:·91,·SHA:·495f8b641d52c71aa4a4bee7c34a38df967a3bdb61c6675e21261b1472b66c45·...·]-7">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 179 | ··········</span><span·class="n">Caller</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 179 | ··········</span><span·class="n">Caller</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="9428133622-9">{</span><span·class="ss">complex</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">decode</span><span·class="p"·data-group-id="9428133622-10">(</span><span·class="n">Data</span><span·class="p"·data-group-id="9428133622-10[·...·truncated·by·diffoscope;·len:·51,·SHA:·caf8515b0e7143ac9bd0cec9db644dfb7c082bc4fd028e3ceeb40f53c101fb49·...·]-9">}</span><span·class="w"> |
| 180 | ······</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 180 | ······</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 181 | ······</span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 181 | ······</span><span·class="nf">loop</span><span·class="p"·data-group-id="9428133622-11">(</span><span·class="n">Port</span><span·class="p"·data-group-id="9428133622-11">)</span><span·class="w"> |
| 182 | ··</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>Assuming·that·both·the·arguments·and·the·results·from·the·C·functions·are·less | 182 | ··</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>Assuming·that·both·the·arguments·and·the·results·from·the·C·functions·are·less |
| 183 | than·256,·a·simple·encoding/decoding·scheme·is·employed.·In·this·scheme,·<code·class="inline">foo</code> | 183 | than·256,·a·simple·encoding/decoding·scheme·is·employed.·In·this·scheme,·<code·class="inline">foo</code> |
| 184 | is·represented·by·byte·1,·<code·class="inline">bar</code>·is·represented·by·2,·and·the·argument/result·is | 184 | is·represented·by·byte·1,·<code·class="inline">bar</code>·is·represented·by·2,·and·the·argument/result·is |
| 185 | represented·by·a·single·byte·as·well:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">encode</span><span·class="p"·data-group-id="8 | 185 | represented·by·a·single·byte·as·well:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">encode</span><span·class="p"·data-group-id="8005837789-1">(</span><span·class="p"·data-group-id="8005837789-2">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="n">X</span><span·class="p"·data-group-id="8005837789-2">}</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·290,·SHA:·b23668e9b0858e3ada79309b2d0f409ddd2c131c89cb03da1f40d7ed1476794a·...·]-3">]</span><span·class="p">;</span><span·class="w"> |
| 186 | </span><span·class="nf">encode</span><span·class="p"·data-group-id="8 | 186 | </span><span·class="nf">encode</span><span·class="p"·data-group-id="8005837789-4">(</span><span·class="p"·data-group-id="8005837789-5">{</span><span·class="ss">bar</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Y</span><span·class="p"·data-group-id="8005837789-5">}</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·290,·SHA:·ea142537ee8618be2b5bb7b335a6e5758cf41210b663c7af5a818ce8187e2f4f·...·]-6">]</span><span·class="p">.</span><span·class="w"> |
| 187 | </span><span·class="nf">decode</span><span·class="p"·data-group-id="8704291993-7">(</span><span·class="p"·data-group-id="8704291993-8">[</span><span·class="n">Int</span><span·class="p"·data-group-id="8704291993-8">]</span><span·class="p"·data-group-id="8704291993-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Int</span><span·class="p">.</span></code></pre><p>The·resulting·Erlang·program,·including·functionality·for·stopping·the·port·and | ||
| 188 | 187 | </span><span·class="nf">decode</span><span·class="p"·data-group-id="8005837789-7">(</span><span·class="p"·data-group-id="8005837789-8">[</span><span·class="n">Int</span><span·class="p"·data-group-id="8005837789-8">]</span><span·class="p"·data-group-id="800[·...·truncated·by·diffoscope;·len:·240,·SHA:·93e244258aa46dad9581636be8cd84547165a6d67f8c20106f7586adbc362ee6·...·] | |
| 188 | detecting·port·failures,·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="8343179239-1">(</span><span·class="ss">complex1</span><span·class="p"·data-group-id="8343179239-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 189 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="34 | 189 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="8343179239-2">(</span><span·class="p"·data-group-id="8343179239-3">[</span><span·class="ss">start</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">stop</span><span·class="p">/</span><sp[·...·truncated·by·diffoscope;·len:·240,·SHA:·d09e975ca6361e7fd549305b37eceb42cf2d3c2b259959e18a46c9efb359d672·...·]9-2">)</span><span·class="p">.</span><span·class="w"> |
| 190 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="34 | 190 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="8343179239-4">(</span><span·class="p"·data-group-id="8343179239-5">[</span><span·class="ss">foo</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">bar</span><span·class="p">/</span><span·[·...·truncated·by·diffoscope;·len:·112,·SHA:·91b6528d227fd5aa224e834d273d301b868626d52c57165fe5360e4edab2e575·...·]9-4">)</span><span·class="p">.</span><span·class="w"> |
| 191 | </span><span·class="nf">start</span><span·class="p"·data-group-id="34 | 191 | </span><span·class="nf">start</span><span·class="p"·data-group-id="8343179239-6">(</span><span·class="n">ExtPrg</span><span·class="p"·data-group-id="8343179239-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 192 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id="34 | 192 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id="8343179239-7">(</span><span·class="o">?</span><span·class="n">MODULE</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">init</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8343179239-8">[</span><spa[·...·truncated·by·diffoscope;·len:·118,·SHA:·a500c6f286b4f5441b5df56ff2adf24646ed282353d968f381a9d9174f0dc11d·...·]9-7">)</span><span·class="p">.</span><span·class="w"> |
| 193 | </span><span·class="nf">stop</span><span·class="p"·data-group-id="34 | 193 | </span><span·class="nf">stop</span><span·class="p"·data-group-id="8343179239-9">(</span><span·class="p"·data-group-id="8343179239-9">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 194 | ····</span><span·class="ss">complex</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="ss">stop</span><span·class="p">.</span><span·class="w"> | 194 | ····</span><span·class="ss">complex</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="ss">stop</span><span·class="p">.</span><span·class="w"> |
| 195 | </span><span·class="nf">foo</span><span·class="p"·data-group-id="34 | 195 | </span><span·class="nf">foo</span><span·class="p"·data-group-id="8343179239-10">(</span><span·class="n">X</span><span·class="p"·data-group-id="8343179239-10">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 196 | ····</span><span·class="nf">call_port</span><span·class="p"·data-group-id="34 | 196 | ····</span><span·class="nf">call_port</span><span·class="p"·data-group-id="8343179239-11">(</span><span·class="p"·data-group-id="8343179239-12">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="n">X</span><span·class="p"·data-group-id="8343179239-12">}</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·14,·SHA:·1e7ea466af222666fe4364ee28b1c28a42449741b3ebfc1f20d028cae9509315·...·]9-11">)</span><span·class="p">.</span><span·class="w"> |
| 197 | </span><span·class="nf">bar</span><span·class="p"·data-group-id="34 | 197 | </span><span·class="nf">bar</span><span·class="p"·data-group-id="8343179239-13">(</span><span·class="n">Y</span><span·class="p"·data-group-id="8343179239-13">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 198 | ····</span><span·class="nf">call_port</span><span·class="p"·data-group-id="34 | 198 | ····</span><span·class="nf">call_port</span><span·class="p"·data-group-id="8343179239-14">(</span><span·class="p"·data-group-id="8343179239-15">{</span><span·class="ss">bar</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Y</span><span·class="p"·data-group-id="8343179239-15">}</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·14,·SHA:·1e7ea466af222666fe4364ee28b1c28a42449741b3ebfc1f20d028cae9509315·...·]9-14">)</span><span·class="p">.</span><span·class="w"> |
| 199 | </span><span·class="nf">call_port</span><span·class="p"·data-group-id="34 | 199 | </span><span·class="nf">call_port</span><span·class="p"·data-group-id="8343179239-16">(</span><span·class="n">Msg</span><span·class="p"·data-group-id="8343179239-16">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 200 | ····</span><span·class="ss">complex</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="34 | 200 | ····</span><span·class="ss">complex</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="8343179239-17">{</span><span·class="ss">call</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="8343179239-18">(</span><span·class="p"·data-group-id="8343179239-18">)</span><span·class="p">,</sp[·...·truncated·by·diffoscope;·len:·93,·SHA:·718f01ef1f19273c3ca6ac21eb283799360eb72acbf8db8ed73f2e07a8e66c31·...·]9-17">}</span><span·class="p">,</span><span·class="w"> |
| 201 | ····</span><span·class="k">receive</span><span·class="w"> | 201 | ····</span><span·class="k">receive</span><span·class="w"> |
| 202 | » </span><span·class="p"·data-group-id="34 | 202 | » </span><span·class="p"·data-group-id="8343179239-19">{</span><span·class="ss">complex</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Result</span><span·class="p"·data-group-id="8343179239-19">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 203 | » ····</span><span·class="n">Result</span><span·class="w"> | 203 | » ····</span><span·class="n">Result</span><span·class="w"> |
| 204 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 204 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 205 | </span><span·class="nf">init</span><span·class="p"·data-group-id="34 | 205 | </span><span·class="nf">init</span><span·class="p"·data-group-id="8343179239-20">(</span><span·class="n">ExtPrg</span><span·class="p"·data-group-id="8343179239-20">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 206 | ····</span><span·class="nf">register</span><span·class="p"·data-group-id="34 | 206 | ····</span><span·class="nf">register</span><span·class="p"·data-group-id="8343179239-21">(</span><span·class="ss">complex</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="8343179239-22">(</span><span·class="p"·data-group-id="8343179239-22">)</span><span·class="p"·da[·...·truncated·by·diffoscope;·len:·22,·SHA:·6eedb86f4b11cf42da86622f0feddb5d444f42195c100bc8ccdffca5e2e1af36·...·]9-21">)</span><span·class="p">,</span><span·class="w"> |
| 207 | ····</span><span·class="nf">process_flag</span><span·class="p"·data-group-id="34 | 207 | ····</span><span·class="nf">process_flag</span><span·class="p"·data-group-id="8343179239-23">(</span><span·class="ss">trap_exit</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">true</span><span·class="p"·data-group-id="8343179239-23">)</span><span·class="p">,</span><span·class="w"> |
| 208 | ····</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">open_port</span><span·class="p"·data-group-id="34 | 208 | ····</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">open_port</span><span·class="p"·data-group-id="8343179239-24">(</span><span·class="p"·data-group-id="8343179239-25">{</span><span·class="nb">spawn</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ExtPrg</span><span·class="p"·data-group-id="8343179239-25">}</span><span·class="p">,</[·...·truncated·by·diffoscope;·len:·388,·SHA:·5dbed25b26bee5f1c4ee976ac9bfe5b28c713614a95c11753691565913a2dca2·...·]9-24">)</span><span·class="p">,</span><span·class="w"> |
| 209 | ····</span><span·class="nf">loop</span><span·class="p"·data-group-id="34 | 209 | ····</span><span·class="nf">loop</span><span·class="p"·data-group-id="8343179239-28">(</span><span·class="n">Port</span><span·class="p"·data-group-id="8343179239-28">)</span><span·class="p">.</span><span·class="w"> |
| 210 | </span><span·class="nf">loop</span><span·class="p"·data-group-id="34 | 210 | </span><span·class="nf">loop</span><span·class="p"·data-group-id="8343179239-29">(</span><span·class="n">Port</span><span·class="p"·data-group-id="8343179239-29">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 211 | ····</span><span·class="k">receive</span><span·class="w"> | 211 | ····</span><span·class="k">receive</span><span·class="w"> |
| 212 | » </span><span·class="p"·data-group-id="34 | 212 | » </span><span·class="p"·data-group-id="8343179239-30">{</span><span·class="ss">call</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Caller</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p"·data-group-id="8343179239-30">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 213 | » ····</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="34 | 213 | » ····</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="8343179239-31">{</span><span·class="nf">self</span><span·class="p"·data-group-id="8343179239-32">(</span><span·class="p"·data-group-id="8343179239-32">)</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8343179239-33">{</[·...·truncated·by·diffoscope;·len:·342,·SHA:·a7d90b9c240cd9a00372b939eb53beed7b6340bb8d21d3cedcce1f5d18219455·...·]9-31">}</span><span·class="p">,</span><span·class="w"> |
| 214 | » ····</span><span·class="k">receive</span><span·class="w"> | 214 | » ····</span><span·class="k">receive</span><span·class="w"> |
| 215 | » » </span><span·class="p"·data-group-id="34 | 215 | » » </span><span·class="p"·data-group-id="8343179239-35">{</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8343179239-36">{</span><span·class="ss">data</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><[·...·truncated·by·diffoscope;·len:·93,·SHA:·e54eb27cdebd51e9c3522f6d078eda38385178df142f8b5b66073b90651f4168·...·]9-35">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 216 | » » ····</span><span·class="n">Caller</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="34 | 216 | » » ····</span><span·class="n">Caller</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="8343179239-37">{</span><span·class="ss">complex</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">decode</span><span·class="p"·data-group-id="8343179239-38">(</span><span·class="n">Data</span><span·class="p"·data-group-id="8343179239-3[·...·truncated·by·diffoscope;·len:·51,·SHA:·adf29b164ac8e39d57b0e09376e5e90de11e38be8228f81e0fc904639f017349·...·]9-37">}</span><span·class="w"> |
| 217 | » ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 217 | » ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 218 | » ····</span><span·class="nf">loop</span><span·class="p"·data-group-id="34 | 218 | » ····</span><span·class="nf">loop</span><span·class="p"·data-group-id="8343179239-39">(</span><span·class="n">Port</span><span·class="p"·data-group-id="8343179239-39">)</span><span·class="p">;</span><span·class="w"> |
| 219 | » </span><span·class="ss">stop</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 219 | » </span><span·class="ss">stop</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 220 | » ····</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="34 | 220 | » ····</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="8343179239-40">{</span><span·class="nf">self</span><span·class="p"·data-group-id="8343179239-41">(</span><span·class="p"·data-group-id="8343179239-41">)</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">close</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·20,·SHA:·51914e59d6806aa929b748119df917d9176fa8d09c61f297d29b77ba638be5af·...·]9-40">}</span><span·class="p">,</span><span·class="w"> |
| 221 | » ····</span><span·class="k">receive</span><span·class="w"> | 221 | » ····</span><span·class="k">receive</span><span·class="w"> |
| 222 | » » </span><span·class="p"·data-group-id="34 | 222 | » » </span><span·class="p"·data-group-id="8343179239-42">{</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">closed</span><span·class="p"·data-group-id="8343179239-42">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 223 | » » ····</span><span·class="nf">exit</span><span·class="p"·data-group-id="34 | 223 | » » ····</span><span·class="nf">exit</span><span·class="p"·data-group-id="8343179239-43">(</span><span·class="ss">normal</span><span·class="p"·data-group-id="8343179239-43">)</span><span·class="w"> |
| 224 | » ····</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> | 224 | » ····</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> |
| 225 | » </span><span·class="p"·data-group-id="34 | 225 | » </span><span·class="p"·data-group-id="8343179239-44">{</span><span·class="ss">'EXIT'</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="p"·data-group-id="8343179239-44">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 226 | » ····</span><span·class="nf">exit</span><span·class="p"·data-group-id="34 | 226 | » ····</span><span·class="nf">exit</span><span·class="p"·data-group-id="8343179239-45">(</span><span·class="ss">port_terminated</span><span·class="p"·data-group-id="8343179239-45">)</span><span·class="w"> |
| 227 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 227 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 228 | </span><span·class="nf">encode</span><span·class="p"·data-group-id="34 | 228 | </span><span·class="nf">encode</span><span·class="p"·data-group-id="8343179239-46">(</span><span·class="p"·data-group-id="8343179239-47">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="n">X</span><span·class="p"·data-group-id="8343179239-47">}</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·295,·SHA:·b4996a7c144a223b82172ef54dd46c5760bc95a59938b5b5da5b65cb086f75ae·...·]9-48">]</span><span·class="p">;</span><span·class="w"> |
| 229 | </span><span·class="nf">encode</span><span·class="p"·data-group-id="34 | 229 | </span><span·class="nf">encode</span><span·class="p"·data-group-id="8343179239-49">(</span><span·class="p"·data-group-id="8343179239-50">{</span><span·class="ss">bar</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Y</span><span·class="p"·data-group-id="8343179239-50">}</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·295,·SHA:·69310c1485b9c2ba13a374f181c97b322ee03fd38b605dfaba8d667ed275d0d2·...·]9-51">]</span><span·class="p">.</span><span·class="w"> |
| 230 | </span><span·class="nf">decode</span><span·class="p"·data-group-id="34 | 230 | </span><span·class="nf">decode</span><span·class="p"·data-group-id="8343179239-52">(</span><span·class="p"·data-group-id="8343179239-53">[</span><span·class="n">Int</span><span·class="p"·data-group-id="8343179239-53">]</span><span·class="p"·data-group-id="8343179239-52">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Int</span><span·class="p">.</span></code></pre><h2·id="c-program"·class="section-heading"> |
| 231 | ··<a·href="#c-program"·class="hover-link"> | 231 | ··<a·href="#c-program"·class="hover-link"> |
| 232 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 232 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 233 | ··</a> | 233 | ··</a> |
| 234 | ··<span·class="text">C·Program</span> | 234 | ··<span·class="text">C·Program</span> |
| 235 | </h2> | 235 | </h2> |
| 236 | <p>On·the·C·side,·it·is·necessary·to·write·functions·for·receiving·and·sending·data | 236 | <p>On·the·C·side,·it·is·necessary·to·write·functions·for·receiving·and·sending·data |
| 237 | with·2·byte·length·indicators·from/to·Erlang.·By·default,·the·C·program·is·to | 237 | with·2·byte·length·indicators·from/to·Erlang.·By·default,·the·C·program·is·to |
| Offset 333, 25 lines modified | Offset 333, 25 lines modified | ||
| 333 | and·terminates.</p><h2·id="running-the-example"·class="section-heading"> | 333 | and·terminates.</p><h2·id="running-the-example"·class="section-heading"> |
| 334 | ··<a·href="#running-the-example"·class="hover-link"> | 334 | ··<a·href="#running-the-example"·class="hover-link"> |
| 335 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 335 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 336 | ··</a> | 336 | ··</a> |
| 337 | ··<span·class="text">Running·the·Example</span> | 337 | ··<span·class="text">Running·the·Example</span> |
| 338 | </h2> | 338 | </h2> |
| 339 | <p><em>Step·1.</em>·Compile·the·C·code:</p><pre><code·class="text">$·gcc·-o·extprg·complex.c·erl_comm.c·port.c</code></pre><p><em>Step·2.</em>·Start·Erlang·and·compile·the·Erlang·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="ss">erl</span><span·class="w"> | 339 | <p><em>Step·1.</em>·Compile·the·C·code:</p><pre><code·class="text">$·gcc·-o·extprg·complex.c·erl_comm.c·port.c</code></pre><p><em>Step·2.</em>·Start·Erlang·and·compile·the·Erlang·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="ss">erl</span><span·class="w"> |
| 340 | </span><span·class="n">Erlang</span><span·class="o">/</span><span·class="n">OTP</span><span·class="w">·</span><span·class="mi">26</span><span·class="w">·</span><span·class="p"·data-group-id=" | 340 | </span><span·class="n">Erlang</span><span·class="o">/</span><span·class="n">OTP</span><span·class="w">·</span><span·class="mi">26</span><span·class="w">·</span><span·class="p"·data-group-id="7076114672-1">[</span><span·class="ss">erts</span><span·class="o">-</span><span·class="mf">14.2</span><span·class="p"·data-group-id="7076114672-1">]</span><span·class="w">·</span><span·class="p"·data-group-id="7076114672-2">[</span><span·class="ss">source<[·...·truncated·by·diffoscope;·len:·1283,·SHA:·168d3c3dc6db777a8922b20f13560bb5420c36eccd02980ca0d566707057873f·...·]-7">]</span><span·class="w"> |
| 341 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V14</span><span·class="p">.</span><span·class="mi">2</span><span·class="w">·</span><span·class="p"·data-group-id=" | 341 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V14</span><span·class="p">.</span><span·class="mi">2</span><span·class="w">·</span><span·class="p"·data-group-id="7076114672-8">(</span><span·class="ss">press</span><span·class="w">·</span><span·class="n">Ctrl</span><span·class="o">+</span><span·class="n">G</span><span·class="w">·</span><span·class="ss">to</span><span·class="w">·</span><span·class="ss">abort</span><sp[·...·truncated·by·diffoscope;·len:·399,·SHA:·2d39dc97d913b3f052c00e4fc8e981a8618e103d529e8e2894a102045326345d·...·]-8">)</span><span·class="gp·unselectable"> |
| 342 | 1>·</span><span·class="nf">c</span><span·class="p"·data-group-id=" | 342 | 1>·</span><span·class="nf">c</span><span·class="p"·data-group-id="7076114672-10">(</span><span·class="ss">complex1</span><span·class="p"·data-group-id="7076114672-10">)</span><span·class="p">.</span><span·class="w"> |
| 343 | </span><span·class="p"·data-group-id=" | 343 | </span><span·class="p"·data-group-id="7076114672-11">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="ss">complex1</span><span·class="p"·data-group-id="7076114672-11">}</span></code></pre><p><em>Step·3.</em>·Run·the·example:</p><pre><code·class="makeup·erlang"·translate="[·...·truncated·by·diffoscope;·len:·269,·SHA:·912939ec00a0ea464b0dd9bf8e1af376acb3838238f6e0ba50a406f751b20e4c·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 344 | </span><span·class="o"><</span><span·class="mf">0.34</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="gp·unselectable"> | 344 | </span><span·class="o"><</span><span·class="mf">0.34</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="gp·unselectable"> |
| 345 | 3>·</span><span·class="nc">complex1</span><span·class="p">:</span><span·class="nf">foo</span><span·class="p"·data-group-id=" | 345 | 3>·</span><span·class="nc">complex1</span><span·class="p">:</span><span·class="nf">foo</span><span·class="p"·data-group-id="3013437937-2">(</span><span·class="mi">3</span><span·class="p"·data-group-id="3013437937-2">)</span><span·class="p">.</span><span·class="w"> |
| 346 | </span><span·class="mi">4</span><span·class="gp·unselectable"> | 346 | </span><span·class="mi">4</span><span·class="gp·unselectable"> |
| 347 | 4>·</span><span·class="nc">complex1</span><span·class="p">:</span><span·class="nf">bar</span><span·class="p"·data-group-id=" | 347 | 4>·</span><span·class="nc">complex1</span><span·class="p">:</span><span·class="nf">bar</span><span·class="p"·data-group-id="3013437937-3">(</span><span·class="mi">5</span><span·class="p"·data-group-id="3013437937-3">)</span><span·class="p">.</span><span·class="w"> |
| 348 | </span><span·class="mi">10</span><span·class="gp·unselectable"> | 348 | </span><span·class="mi">10</span><span·class="gp·unselectable"> |
| 349 | 5>·</span><span·class="nc">complex1</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id=" | 349 | 5>·</span><span·class="nc">complex1</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id="3013437937-4">(</span><span·class="p"·data-group-id="3013437937-4">)</span><span·class="p">.</span><span·class="w"> |
| 350 | </span><span·class="ss">stop</span></code></pre> | 350 | </span><span·class="ss">stop</span></code></pre> |
| 351 | </div> | 351 | </div> |
| 352 | <div·class="bottom-actions"·id="bottom-actions"> | 352 | <div·class="bottom-actions"·id="bottom-actions"> |
| 353 | ··<div·class="bottom-actions-item"> | 353 | ··<div·class="bottom-actions-item"> |
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| 151 | <p>Like·a·port·program,·the·port·communicates·with·an·Erlang·process.·All | 151 | <p>Like·a·port·program,·the·port·communicates·with·an·Erlang·process.·All |
| 152 | communication·goes·through·one·Erlang·process·that·is·the·<em>connected·process</em>·of | 152 | communication·goes·through·one·Erlang·process·that·is·the·<em>connected·process</em>·of |
| 153 | the·port·driver.·Terminating·this·process·closes·the·port·driver.</p><p>Before·the·port·is·created,·the·driver·must·be·loaded.·This·is·done·with·the | 153 | the·port·driver.·Terminating·this·process·closes·the·port·driver.</p><p>Before·the·port·is·created,·the·driver·must·be·loaded.·This·is·done·with·the |
| 154 | function·<a·href="../../lib/kernel-10.2.3/doc/html/erl_ddll.html#load_driver/2"><code·class="inline">erl_ddll:load_driver/2</code></a>,·with·the·name·of·the·shared·library·as | 154 | function·<a·href="../../lib/kernel-10.2.3/doc/html/erl_ddll.html#load_driver/2"><code·class="inline">erl_ddll:load_driver/2</code></a>,·with·the·name·of·the·shared·library·as |
| 155 | argument.</p><p>The·port·is·then·created·using·the·BIF·<a·href="../../erts-15.2.3/doc/html/erlang.html#open_port/2"><code·class="inline">open_port/2</code></a>,·with·the | 155 | argument.</p><p>The·port·is·then·created·using·the·BIF·<a·href="../../erts-15.2.3/doc/html/erlang.html#open_port/2"><code·class="inline">open_port/2</code></a>,·with·the |
| 156 | tuple·<code·class="inline">{spawn,·DriverName}</code>·as·the·first·argument.·The·string·<code·class="inline">SharedLib</code>·is·the | 156 | tuple·<code·class="inline">{spawn,·DriverName}</code>·as·the·first·argument.·The·string·<code·class="inline">SharedLib</code>·is·the |
| 157 | name·of·the·port·driver.·The·second·argument·is·a·list·of·options,·none·in·this | 157 | name·of·the·port·driver.·The·second·argument·is·a·list·of·options,·none·in·this |
| 158 | case:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 158 | case:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="2441403949-1">(</span><span·class="ss">complex5</span><span·class="p"·data-group-id="2441403949-1">)</span><span·class="p">.</span><span·class="w"> |
| 159 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 159 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="2441403949-2">(</span><span·class="p"·data-group-id="2441403949-3">[</span><span·class="ss">start</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">init</span><span·class="p">/</span><sp[·...·truncated·by·diffoscope;·len:·116,·SHA:·78623b76d54779187899846d14747ca4fa01afa93ab4d96c8b9b178e167dc975·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 160 | </span><span·class="nf">start</span><span·class="p"·data-group-id=" | 160 | </span><span·class="nf">start</span><span·class="p"·data-group-id="2441403949-4">(</span><span·class="n">SharedLib</span><span·class="p"·data-group-id="2441403949-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 161 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">erl_ddll</span><span·class="p">:</span><span·class="nf">load_driver</span><span·class="p"·data-group-id=" | 161 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">erl_ddll</span><span·class="p">:</span><span·class="nf">load_driver</span><span·class="p"·data-group-id="2441403949-5">(</span><span·class="s">"."</span><span·class="p">,</span><span·class="w">·</span><span·class="n">SharedLib</span><span·class="p"·data-group-id="2441403949-5">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 162 | ········</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> | 162 | ········</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> |
| 163 | ········</span><span·class="p"·data-group-id=" | 163 | ········</span><span·class="p"·data-group-id="2441403949-6">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">already_loaded</span><span·class="p"·data-group-id="2441403949-6">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> |
| 164 | ········</span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">exit</span><span·class="p"·data-group-id=" | 164 | ········</span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">exit</span><span·class="p"·data-group-id="2441403949-7">(</span><span·class="p"·data-group-id="2441403949-8">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">could_not_load_driver</span><span·class="p"·data-group-id="2441403949-8">}</span><span·[·...·truncated·by·diffoscope;·len:·35,·SHA:·575ebd24bd2c00313d1179308928560d7ae644f673ae0236a3d67129b16c33f4·...·]-7">)</span><span·class="w"> |
| 165 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 165 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 166 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id=" | 166 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id="2441403949-9">(</span><span·class="o">?</span><span·class="n">MODULE</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">init</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2441403949-10">[</span><sp[·...·truncated·by·diffoscope;·len:·124,·SHA:·60aaf5e0fd411c91408a6a9761fc0f28f06d8b2b1c47c8df6a44d55c20c4fb24·...·]-9">)</span><span·class="p">.</span><span·class="w"> |
| 167 | </span><span·class="nf">init</span><span·class="p"·data-group-id=" | 167 | </span><span·class="nf">init</span><span·class="p"·data-group-id="2441403949-11">(</span><span·class="n">SharedLib</span><span·class="p"·data-group-id="2441403949-11">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 168 | ··</span><span·class="nf">register</span><span·class="p"·data-group-id=" | 168 | ··</span><span·class="nf">register</span><span·class="p"·data-group-id="2441403949-12">(</span><span·class="ss">complex</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="2441403949-13">(</span><span·class="p"·data-group-id="2441403949-13">)</span><span·class="p"·da[·...·truncated·by·diffoscope;·len:·23,·SHA:·467c6370c8349f0abfc6a502a35ed68abfe50c8d77b9505367fb53b4d16de988·...·]-12">)</span><span·class="p">,</span><span·class="w"> |
| 169 | ··</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">open_port</span><span·class="p"·data-group-id="9979382106-14">(</span><span·class="p"·data-group-id="9979382106-15">{</span><span·class="nb">spawn</span><span·class="p">,</span><span·class="w">·</span><span·class="n">SharedLib</span><span·class="p"·data-group-id="9979382106-15">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9979382106-16">[</span><span·class="p"·data-group-id="9979382106-16">]</span><span·class="p"·data-group-id="9979382106-14">)</span><span·class="p">,</span><span·class="w"> | ||
| 170 | ··</span><span·class="n | 169 | ··</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">open_port</span><span·class="p"·data-group-id="2441403949-14">(</span><span·class="p"·data-group-id="2441403949-15">{</span><span·class="nb">spawn</span><[·...·truncated·by·diffoscope;·len:·383,·SHA:·0d8741256b33a4b9a67a1134ac631e6959274b3886e2e277feff92b01d20d1a5·...·] |
| 170 | ··</span><span·class="nf">loop</span><span·class="p"·data-group-id="2441403949-17">(</span><span·class="n">Port</span><span·class="p"·data-group-id="2441403949-17">)</span><span·class="p">.</span></code></pre><p>Now·<code·class="inline">complex5:foo/1</code>·and·<code·class="inline">complex5:bar/1</code>·can·be·implemented.·Both·send·a | ||
| 171 | message·to·the·<code·class="inline">complex</code>·process·and·receive·the·following·reply:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">foo</span><span·class="p"·data-group-id=" | 171 | message·to·the·<code·class="inline">complex</code>·process·and·receive·the·following·reply:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">foo</span><span·class="p"·data-group-id="1094689125-1">(</span><span·class="n">X</span><span·class="p"·data-group-id="1094689125-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 172 | ····</span><span·class="nf">call_port</span><span·class="p"·data-group-id=" | 172 | ····</span><span·class="nf">call_port</span><span·class="p"·data-group-id="1094689125-2">(</span><span·class="p"·data-group-id="1094689125-3">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="n">X</span><span·class="p"·data-group-id="1094689125-3">}</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·11,·SHA:·598f03e60ee5a3296c25fb7fce84071db6034dbf212b65d6994492873f1695b6·...·]5-2">)</span><span·class="p">.</span><span·class="w"> |
| 173 | </span><span·class="nf">bar</span><span·class="p"·data-group-id=" | 173 | </span><span·class="nf">bar</span><span·class="p"·data-group-id="1094689125-4">(</span><span·class="n">Y</span><span·class="p"·data-group-id="1094689125-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 174 | ····</span><span·class="nf">call_port</span><span·class="p"·data-group-id=" | 174 | ····</span><span·class="nf">call_port</span><span·class="p"·data-group-id="1094689125-5">(</span><span·class="p"·data-group-id="1094689125-6">{</span><span·class="ss">bar</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Y</span><span·class="p"·data-group-id="1094689125-6">}</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·11,·SHA:·598f03e60ee5a3296c25fb7fce84071db6034dbf212b65d6994492873f1695b6·...·]5-5">)</span><span·class="p">.</span><span·class="w"> |
| 175 | </span><span·class="nf">call_port</span><span·class="p"·data-group-id=" | 175 | </span><span·class="nf">call_port</span><span·class="p"·data-group-id="1094689125-7">(</span><span·class="n">Msg</span><span·class="p"·data-group-id="1094689125-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 176 | ····</span><span·class="ss">complex</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 176 | ····</span><span·class="ss">complex</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="1094689125-8">{</span><span·class="ss">call</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="1094689125-9">(</span><span·class="p"·data-group-id="1094689125-9">)</span><span·class="p">,</span>[·...·truncated·by·diffoscope;·len:·90,·SHA:·fab7997407b20fd4730babe21ee1f21e8ea0549d588414f1a52eb5749e575ec6·...·]5-8">}</span><span·class="p">,</span><span·class="w"> |
| 177 | ····</span><span·class="k">receive</span><span·class="w"> | 177 | ····</span><span·class="k">receive</span><span·class="w"> |
| 178 | ········</span><span·class="p"·data-group-id=" | 178 | ········</span><span·class="p"·data-group-id="1094689125-10">{</span><span·class="ss">complex</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Result</span><span·class="p"·data-group-id="1094689125-10">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 179 | ············</span><span·class="n">Result</span><span·class="w"> | 179 | ············</span><span·class="n">Result</span><span·class="w"> |
| 180 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>The·<code·class="inline">complex</code>·process·performs·the·following:</p><ul><li>Encodes·the·message·into·a·sequence·of·bytes.</li><li>Sends·it·to·the·port.</li><li>Waits·for·a·reply.</li><li>Decodes·the·reply.</li><li>Sends·it·back·to·the·caller:</li></ul><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">loop</span><span·class="p"·data-group-id="5 | 180 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>The·<code·class="inline">complex</code>·process·performs·the·following:</p><ul><li>Encodes·the·message·into·a·sequence·of·bytes.</li><li>Sends·it·to·the·port.</li><li>Waits·for·a·reply.</li><li>Decodes·the·reply.</li><li>Sends·it·back·to·the·caller:</li></ul><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">loop</span><span·class="p"·data-group-id="7592866909-1">(</span><span·class="n">Port</span><span·class="p"·data-group-id="7592866909-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 181 | ····</span><span·class="k">receive</span><span·class="w"> | 181 | ····</span><span·class="k">receive</span><span·class="w"> |
| 182 | ········</span><span·class="p"·data-group-id="5 | 182 | ········</span><span·class="p"·data-group-id="7592866909-2">{</span><span·class="ss">call</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Caller</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p"·data-group-id="7592866909-2">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 183 | ············</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="5 | 183 | ············</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="7592866909-3">{</span><span·class="nf">self</span><span·class="p"·data-group-id="7592866909-4">(</span><span·class="p"·data-group-id="7592866909-4">)</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7592866909-5">{</span[·...·truncated·by·diffoscope;·len:·336,·SHA:·66d7a5e997d07ac321505c759def7768abd0b15dde51adf06cc202494bac21ae·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 184 | ············</span><span·class="k">receive</span><span·class="w"> | 184 | ············</span><span·class="k">receive</span><span·class="w"> |
| 185 | ················</span><span·class="p"·data-group-id="5 | 185 | ················</span><span·class="p"·data-group-id="7592866909-7">{</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7592866909-8">{</span><span·class="ss">data</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><sp[·...·truncated·by·diffoscope;·len:·91,·SHA:·83a60a3637f56ccd97f0d0409e939df6ea6cebb10f5569bccd1482c67b6b9029·...·]-7">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 186 | ····················</span><span·class="n">Caller</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="5 | 186 | ····················</span><span·class="n">Caller</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="7592866909-9">{</span><span·class="ss">complex</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">decode</span><span·class="p"·data-group-id="7592866909-10">(</span><span·class="n">Data</span><span·class="p"·data-group-id="7592866909-10[·...·truncated·by·diffoscope;·len:·51,·SHA:·1b05f6b2b6baa7ccea9aa46d25ac84b857e3b28a413a60d1119cbcf24bf8f262·...·]-9">}</span><span·class="w"> |
| 187 | ············</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 187 | ············</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 188 | ············</span><span·class="nf">loop</span><span·class="p"·data-group-id="5 | 188 | ············</span><span·class="nf">loop</span><span·class="p"·data-group-id="7592866909-11">(</span><span·class="n">Port</span><span·class="p"·data-group-id="7592866909-11">)</span><span·class="w"> |
| 189 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>Assuming·that·both·the·arguments·and·the·results·from·the·C·functions·are·less | 189 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>Assuming·that·both·the·arguments·and·the·results·from·the·C·functions·are·less |
| 190 | than·256,·a·simple·encoding/decoding·scheme·is·employed.·In·this·scheme,·<code·class="inline">foo</code> | 190 | than·256,·a·simple·encoding/decoding·scheme·is·employed.·In·this·scheme,·<code·class="inline">foo</code> |
| 191 | is·represented·by·byte·1,·<code·class="inline">bar</code>·is·represented·by·2,·and·the·argument/result·is | 191 | is·represented·by·byte·1,·<code·class="inline">bar</code>·is·represented·by·2,·and·the·argument/result·is |
| 192 | represented·by·a·single·byte·as·well:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">encode</span><span·class="p"·data-group-id=" | 192 | represented·by·a·single·byte·as·well:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">encode</span><span·class="p"·data-group-id="8702690443-1">(</span><span·class="p"·data-group-id="8702690443-2">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="n">X</span><span·class="p"·data-group-id="8702690443-2">}</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·291,·SHA:·19f758a598691afba9888259423375aff101cd7a43210dd86cd26e55b6ddf526·...·]-3">]</span><span·class="p">;</span><span·class="w"> |
| 193 | </span><span·class="nf">encode</span><span·class="p"·data-group-id=" | 193 | </span><span·class="nf">encode</span><span·class="p"·data-group-id="8702690443-4">(</span><span·class="p"·data-group-id="8702690443-5">{</span><span·class="ss">bar</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Y</span><span·class="p"·data-group-id="8702690443-5">}</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·291,·SHA:·1ddb4afc48af7a251d0367f7ece0fd5c20b3184432d87d443f5adbe5d7283320·...·]-6">]</span><span·class="p">.</span><span·class="w"> |
| 194 | </span><span·class="nf">decode</span><span·class="p"·data-group-id=" | 194 | </span><span·class="nf">decode</span><span·class="p"·data-group-id="8702690443-7">(</span><span·class="p"·data-group-id="8702690443-8">[</span><span·class="n">Int</span><span·class="p"·data-group-id="8702690443-8">]</span><span·class="p"·data-group-id="8702690443-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Int</span><span·class="p">.</span></code></pre><p>The·resulting·Erlang·program,·including·functions·for·stopping·the·port·and |
| 195 | detecting·port·failures,·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w"> | 195 | detecting·port·failures,·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w"> |
| 196 | </span><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 196 | </span><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="8739128408-1">(</span><span·class="ss">complex5</span><span·class="p"·data-group-id="8739128408-1">)</span><span·class="p">.</span><span·class="w"> |
| 197 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 197 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="8739128408-2">(</span><span·class="p"·data-group-id="8739128408-3">[</span><span·class="ss">start</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">stop</span><span·class="p">/</span><sp[·...·truncated·by·diffoscope;·len:·241,·SHA:·0998a08bf565bb7e8ca8939de24163769fb1d41020fe4ca8a6cc0de0f6fbaf95·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 198 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 198 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="8739128408-4">(</span><span·class="p"·data-group-id="8739128408-5">[</span><span·class="ss">foo</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">bar</span><span·class="p">/</span><span·[·...·truncated·by·diffoscope;·len:·113,·SHA:·d2384d0bee0a3af4fc4bc2c9b2995b507ea0c07e57f818e6bbc34506c7bfa1b0·...·]-4">)</span><span·class="p">.</span><span·class="w"> |
| 199 | </span><span·class="nf">start</span><span·class="p"·data-group-id=" | 199 | </span><span·class="nf">start</span><span·class="p"·data-group-id="8739128408-6">(</span><span·class="n">SharedLib</span><span·class="p"·data-group-id="8739128408-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 200 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">erl_ddll</span><span·class="p">:</span><span·class="nf">load_driver</span><span·class="p"·data-group-id=" | 200 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">erl_ddll</span><span·class="p">:</span><span·class="nf">load_driver</span><span·class="p"·data-group-id="8739128408-7">(</span><span·class="s">"."</span><span·class="p">,</span><span·class="w">·</span><span·class="n">SharedLib</span><span·class="p"·data-group-id="8739128408-7">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 201 | » </span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> | 201 | » </span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> |
| 202 | » </span><span·class="p"·data-group-id=" | 202 | » </span><span·class="p"·data-group-id="8739128408-8">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">already_loaded</span><span·class="p"·data-group-id="8739128408-8">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> |
| 203 | » </span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">exit</span><span·class="p"·data-group-id=" | 203 | » </span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">exit</span><span·class="p"·data-group-id="8739128408-9">(</span><span·class="p"·data-group-id="8739128408-10">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">could_not_load_driver</span><span·class="p"·data-group-id="8739128408-10">}</span><spa[·...·truncated·by·diffoscope;·len:·37,·SHA:·1ceddf5f1e856d5ac1f865e17f2fe91a5afdd85585bb86a4b3fcdf0b20df6d5f·...·]-9">)</span><span·class="w"> |
| 204 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 204 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 205 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id=" | 205 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id="8739128408-11">(</span><span·class="o">?</span><span·class="n">MODULE</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">init</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8739128408-12">[</span><s[·...·truncated·by·diffoscope;·len:·125,·SHA:·af1daee1f9de5dd6ff2c8da052e2a3c428170c65e4206be29b4f7678576c5235·...·]-11">)</span><span·class="p">.</span><span·class="w"> |
| 206 | </span><span·class="nf">init</span><span·class="p"·data-group-id=" | 206 | </span><span·class="nf">init</span><span·class="p"·data-group-id="8739128408-13">(</span><span·class="n">SharedLib</span><span·class="p"·data-group-id="8739128408-13">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 207 | ····</span><span·class="nf">register</span><span·class="p"·data-group-id=" | 207 | ····</span><span·class="nf">register</span><span·class="p"·data-group-id="8739128408-14">(</span><span·class="ss">complex</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="8739128408-15">(</span><span·class="p"·data-group-id="8739128408-15">)</span><span·class="p"·da[·...·truncated·by·diffoscope;·len:·23,·SHA:·ca62996980b2dc5c2678f2918541aafad6b748f7f5d309f48bb65ca385436be7·...·]-14">)</span><span·class="p">,</span><span·class="w"> |
| 208 | ····</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">open_port</span><span·class="p"·data-group-id=" | 208 | ····</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">open_port</span><span·class="p"·data-group-id="8739128408-16">(</span><span·class="p"·data-group-id="8739128408-17">{</span><span·class="nb">spawn</span><span·class="p">,</span><span·class="w">·</span><span·class="n">SharedLib</span><span·class="p"·data-group-id="8739128408-17">}</span><span·class="p">[·...·truncated·by·diffoscope;·len:·181,·SHA:·30828a6b7a3df2b94e3d877aeadd3bc4ebb6964a306c3f4ad02a259c50e83608·...·]-16">)</span><span·class="p">,</span><span·class="w"> |
| 209 | ····</span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 209 | ····</span><span·class="nf">loop</span><span·class="p"·data-group-id="8739128408-19">(</span><span·class="n">Port</span><span·class="p"·data-group-id="8739128408-19">)</span><span·class="p">.</span><span·class="w"> |
| 210 | </span><span·class="nf">stop</span><span·class="p"·data-group-id=" | 210 | </span><span·class="nf">stop</span><span·class="p"·data-group-id="8739128408-20">(</span><span·class="p"·data-group-id="8739128408-20">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 211 | ····</span><span·class="ss">complex</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="ss">stop</span><span·class="p">.</span><span·class="w"> | 211 | ····</span><span·class="ss">complex</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="ss">stop</span><span·class="p">.</span><span·class="w"> |
| 212 | </span><span·class="nf">foo</span><span·class="p"·data-group-id=" | 212 | </span><span·class="nf">foo</span><span·class="p"·data-group-id="8739128408-21">(</span><span·class="n">X</span><span·class="p"·data-group-id="8739128408-21">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 213 | ····</span><span·class="nf">call_port</span><span·class="p"·data-group-id=" | 213 | ····</span><span·class="nf">call_port</span><span·class="p"·data-group-id="8739128408-22">(</span><span·class="p"·data-group-id="8739128408-23">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="n">X</span><span·class="p"·data-group-id="8739128408-23">}</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·15,·SHA:·ae50dd8fc51f793e00838b30fa255cfd1cb8a18b06d2990ff01f55d3b676bbeb·...·]-22">)</span><span·class="p">.</span><span·class="w"> |
| 214 | </span><span·class="nf">bar</span><span·class="p"·data-group-id=" | 214 | </span><span·class="nf">bar</span><span·class="p"·data-group-id="8739128408-24">(</span><span·class="n">Y</span><span·class="p"·data-group-id="8739128408-24">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 215 | ····</span><span·class="nf">call_port</span><span·class="p"·data-group-id=" | 215 | ····</span><span·class="nf">call_port</span><span·class="p"·data-group-id="8739128408-25">(</span><span·class="p"·data-group-id="8739128408-26">{</span><span·class="ss">bar</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Y</span><span·class="p"·data-group-id="8739128408-26">}</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·15,·SHA:·ae50dd8fc51f793e00838b30fa255cfd1cb8a18b06d2990ff01f55d3b676bbeb·...·]-25">)</span><span·class="p">.</span><span·class="w"> |
| 216 | </span><span·class="nf">call_port</span><span·class="p"·data-group-id=" | 216 | </span><span·class="nf">call_port</span><span·class="p"·data-group-id="8739128408-27">(</span><span·class="n">Msg</span><span·class="p"·data-group-id="8739128408-27">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 217 | ····</span><span·class="ss">complex</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 217 | ····</span><span·class="ss">complex</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="8739128408-28">{</span><span·class="ss">call</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="8739128408-29">(</span><span·class="p"·data-group-id="8739128408-29">)</span><span·class="p">,</sp[·...·truncated·by·diffoscope;·len:·94,·SHA:·7d7e8d2aa1f6ac661649393142063c1afa6ec295cf4f14185880b8922bb341cc·...·]-28">}</span><span·class="p">,</span><span·class="w"> |
| 218 | ····</span><span·class="k">receive</span><span·class="w"> | 218 | ····</span><span·class="k">receive</span><span·class="w"> |
| 219 | » </span><span·class="p"·data-group-id=" | 219 | » </span><span·class="p"·data-group-id="8739128408-30">{</span><span·class="ss">complex</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Result</span><span·class="p"·data-group-id="8739128408-30">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 220 | » ····</span><span·class="n">Result</span><span·class="w"> | 220 | » ····</span><span·class="n">Result</span><span·class="w"> |
| 221 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 221 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 222 | </span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 222 | </span><span·class="nf">loop</span><span·class="p"·data-group-id="8739128408-31">(</span><span·class="n">Port</span><span·class="p"·data-group-id="8739128408-31">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 223 | ····</span><span·class="k">receive</span><span·class="w"> | 223 | ····</span><span·class="k">receive</span><span·class="w"> |
| 224 | » </span><span·class="p"·data-group-id=" | 224 | » </span><span·class="p"·data-group-id="8739128408-32">{</span><span·class="ss">call</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Caller</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p"·data-group-id="8739128408-32">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 225 | » ····</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 225 | » ····</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="8739128408-33">{</span><span·class="nf">self</span><span·class="p"·data-group-id="8739128408-34">(</span><span·class="p"·data-group-id="8739128408-34">)</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8739128408-35">{</[·...·truncated·by·diffoscope;·len:·343,·SHA:·4b7d139a1b06ec0a531978c7eeed368ed8972f29ebe97e5044550ed264daf560·...·]-33">}</span><span·class="p">,</span><span·class="w"> |
| 226 | » ····</span><span·class="k">receive</span><span·class="w"> | 226 | » ····</span><span·class="k">receive</span><span·class="w"> |
| 227 | » » </span><span·class="p"·data-group-id=" | 227 | » » </span><span·class="p"·data-group-id="8739128408-37">{</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8739128408-38">{</span><span·class="ss">data</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><[·...·truncated·by·diffoscope;·len:·94,·SHA:·203308fbb9510e1a82d1ebd61e23dd4936aea67c0acb92d1762fa67ac4993602·...·]-37">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 228 | » » ····</span><span·class="n">Caller</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 228 | » » ····</span><span·class="n">Caller</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="8739128408-39">{</span><span·class="ss">complex</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">decode</span><span·class="p"·data-group-id="8739128408-40">(</span><span·class="n">Data</span><span·class="p"·data-group-id="8739128408-4[·...·truncated·by·diffoscope;·len:·52,·SHA:·ab41168d22d13003f6d3f3241d91e28a5f59ac61b6e94620a0025e312fafb109·...·]-39">}</span><span·class="w"> |
| 229 | » ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 229 | » ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 230 | » ····</span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 230 | » ····</span><span·class="nf">loop</span><span·class="p"·data-group-id="8739128408-41">(</span><span·class="n">Port</span><span·class="p"·data-group-id="8739128408-41">)</span><span·class="p">;</span><span·class="w"> |
| 231 | » </span><span·class="ss">stop</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 231 | » </span><span·class="ss">stop</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 232 | » ····</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 232 | » ····</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="8739128408-42">{</span><span·class="nf">self</span><span·class="p"·data-group-id="8739128408-43">(</span><span·class="p"·data-group-id="8739128408-43">)</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">close</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·21,·SHA:·6acd7aa4b6d23407dd68a0635292a1b856d42537f82ecc7eeeb31845202fea53·...·]-42">}</span><span·class="p">,</span><span·class="w"> |
| 233 | » ····</span><span·class="k">receive</span><span·class="w"> | 233 | » ····</span><span·class="k">receive</span><span·class="w"> |
| 234 | » » </span><span·class="p"·data-group-id=" | 234 | » » </span><span·class="p"·data-group-id="8739128408-44">{</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">closed</span><span·class="p"·data-group-id="8739128408-44">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 235 | » » ····</span><span·class="nf">exit</span><span·class="p"·data-group-id=" | 235 | » » ····</span><span·class="nf">exit</span><span·class="p"·data-group-id="8739128408-45">(</span><span·class="ss">normal</span><span·class="p"·data-group-id="8739128408-45">)</span><span·class="w"> |
| 236 | » ····</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> | 236 | » ····</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> |
| 237 | » </span><span·class="p"·data-group-id=" | 237 | » </span><span·class="p"·data-group-id="8739128408-46">{</span><span·class="ss">'EXIT'</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="p"·data-group-id="8739128408-46">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 238 | » ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 238 | » ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="8739128408-47">(</span><span·class="s">"</span><span·class="si">~p</span><span·class="s">·</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8739128408-48">[</sp[·...·truncated·by·diffoscope;·len:·127,·SHA:·daa1c5977ddae275a71b635c4daa11ae4e569fec777b6d34fe446079a9797a8b·...·]-47">)</span><span·class="p">,</span><span·class="w"> |
| 239 | » ····</span><span·class="nf">exit</span><span·class="p"·data-group-id=" | 239 | » ····</span><span·class="nf">exit</span><span·class="p"·data-group-id="8739128408-49">(</span><span·class="ss">port_terminated</span><span·class="p"·data-group-id="8739128408-49">)</span><span·class="w"> |
| 240 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 240 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 241 | </span><span·class="nf">encode</span><span·class="p"·data-group-id=" | 241 | </span><span·class="nf">encode</span><span·class="p"·data-group-id="8739128408-50">(</span><span·class="p"·data-group-id="8739128408-51">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="n">X</span><span·class="p"·data-group-id="8739128408-51">}</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·296,·SHA:·00917524cf6a52ac03ebc4539f3526e56de723000fd747406a907383b52ff866·...·]-52">]</span><span·class="p">;</span><span·class="w"> |
| 242 | </span><span·class="nf">encode</span><span·class="p"·data-group-id=" | 242 | </span><span·class="nf">encode</span><span·class="p"·data-group-id="8739128408-53">(</span><span·class="p"·data-group-id="8739128408-54">{</span><span·class="ss">bar</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Y</span><span·class="p"·data-group-id="8739128408-54">}</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·296,·SHA:·5a26ac5178359c75da59509ae24913473b61ff46ab82d1858cd8745adba112bc·...·]-55">]</span><span·class="p">.</span><span·class="w"> |
| 243 | </span><span·class="nf">decode</span><span·class="p"·data-group-id=" | 243 | </span><span·class="nf">decode</span><span·class="p"·data-group-id="8739128408-56">(</span><span·class="p"·data-group-id="8739128408-57">[</span><span·class="n">Int</span><span·class="p"·data-group-id="8739128408-57">]</span><span·class="p"·data-group-id="8739128408-56">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Int</span><span·class="p">.</span></code></pre><h2·id="c-driver"·class="section-heading"> |
| 244 | ··<a·href="#c-driver"·class="hover-link"> | 244 | ··<a·href="#c-driver"·class="hover-link"> |
| 245 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 245 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 246 | ··</a> | 246 | ··</a> |
| 247 | ··<span·class="text">C·Driver</span> | 247 | ··<span·class="text">C·Driver</span> |
| 248 | </h2> | 248 | </h2> |
| 249 | <p>The·C·driver·is·a·module·that·is·compiled·and·linked·into·a·shared·library.·It | 249 | <p>The·C·driver·is·a·module·that·is·compiled·and·linked·into·a·shared·library.·It |
| 250 | uses·a·driver·structure·and·includes·the·header·file·<code·class="inline">erl_driver.h</code>.</p><p>The·driver·structure·is·filled·with·the·driver·name·and·function·pointers.·It·is | 250 | uses·a·driver·structure·and·includes·the·header·file·<code·class="inline">erl_driver.h</code>.</p><p>The·driver·structure·is·filled·with·the·driver·name·and·function·pointers.·It·is |
| Offset 347, 25 lines modified | Offset 347, 25 lines modified | ||
| 347 | ··<a·href="#running-the-example"·class="hover-link"> | 347 | ··<a·href="#running-the-example"·class="hover-link"> |
| 348 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 348 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 349 | ··</a> | 349 | ··</a> |
| 350 | ··<span·class="text">Running·the·Example</span> | 350 | ··<span·class="text">Running·the·Example</span> |
| 351 | </h2> | 351 | </h2> |
| 352 | <p><em>Step·1.</em>·Compile·the·C·code:</p><pre><code·class="text">unix>·gcc·-o·example_drv.so·-fpic·-shared·complex.c·port_driver.c | 352 | <p><em>Step·1.</em>·Compile·the·C·code:</p><pre><code·class="text">unix>·gcc·-o·example_drv.so·-fpic·-shared·complex.c·port_driver.c |
| 353 | windows>·cl·-LD·-MD·-Fe·example_drv.dll·complex.c·port_driver.c</code></pre><p><em>Step·2.</em>·Start·Erlang·and·compile·the·Erlang·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="ss">erl</span><span·class="w"> | 353 | windows>·cl·-LD·-MD·-Fe·example_drv.dll·complex.c·port_driver.c</code></pre><p><em>Step·2.</em>·Start·Erlang·and·compile·the·Erlang·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="ss">erl</span><span·class="w"> |
| 354 | </span><span·class="n">Erlang</span><span·class="o">/</span><span·class="n">OTP</span><span·class="w">·</span><span·class="mi">26</span><span·class="w">·</span><span·class="p"·data-group-id=" | 354 | </span><span·class="n">Erlang</span><span·class="o">/</span><span·class="n">OTP</span><span·class="w">·</span><span·class="mi">26</span><span·class="w">·</span><span·class="p"·data-group-id="2696677914-1">[</span><span·class="ss">erts</span><span·class="o">-</span><span·class="mf">14.2</span><span·class="p"·data-group-id="2696677914-1">]</span><span·class="w">·</span><span·class="p"·data-group-id="2696677914-2">[</span><span·class="ss">source<[·...·truncated·by·diffoscope;·len:·1283,·SHA:·cdca71f28e9edacb58e105c0a09b1151a51f85f92220cc67dc2198397265d637·...·]-7">]</span><span·class="w"> |
| 355 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V14</span><span·class="p">.</span><span·class="mi">2</span><span·class="w">·</span><span·class="p"·data-group-id=" | 355 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V14</span><span·class="p">.</span><span·class="mi">2</span><span·class="w">·</span><span·class="p"·data-group-id="2696677914-8">(</span><span·class="ss">press</span><span·class="w">·</span><span·class="n">Ctrl</span><span·class="o">+</span><span·class="n">G</span><span·class="w">·</span><span·class="ss">to</span><span·class="w">·</span><span·class="ss">abort</span><sp[·...·truncated·by·diffoscope;·len:·399,·SHA:·bc24b65609c254caaaccbf85e928fc9c89b67b0ad617b9a059a3b8b223d24e85·...·]-8">)</span><span·class="gp·unselectable"> |
| 356 | 1>·</span><span·class="nf">c</span><span·class="p"·data-group-id=" | 356 | 1>·</span><span·class="nf">c</span><span·class="p"·data-group-id="2696677914-10">(</span><span·class="ss">complex5</span><span·class="p"·data-group-id="2696677914-10">)</span><span·class="p">.</span><span·class="w"> |
| 357 | </span><span·class="p"·data-group-id=" | 357 | </span><span·class="p"·data-group-id="2696677914-11">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="ss">complex5</span><span·class="p"·data-group-id="2696677914-11">}</span></code></pre><p><em>Step·3.</em>·Run·the·example:</p><pre><code·class="makeup·erlang"·translate="[·...·truncated·by·diffoscope;·len:·272,·SHA:·3ff25367143a918b708da6ea55e4f3506b8f8af18ca118d083b0bfefaf4a54a7·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 358 | </span><span·class="o"><</span><span·class="mf">0.34</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="gp·unselectable"> | 358 | </span><span·class="o"><</span><span·class="mf">0.34</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="gp·unselectable"> |
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| Offset 122, 16 lines modified | Offset 122, 16 lines modified | ||
| 122 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 122 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 123 | ··</a> | 123 | ··</a> |
| 124 | ··<span·class="text">Compilation</span> | 124 | ··<span·class="text">Compilation</span> |
| 125 | </h2> | 125 | </h2> |
| 126 | <p>Erlang·programs·must·be·<em>compiled</em>·to·object·code.·The·compiler·can·generate·a | 126 | <p>Erlang·programs·must·be·<em>compiled</em>·to·object·code.·The·compiler·can·generate·a |
| 127 | new·file·that·contains·the·object·code.·The·current·abstract·machine,·which·runs | 127 | new·file·that·contains·the·object·code.·The·current·abstract·machine,·which·runs |
| 128 | the·object·code,·is·called·BEAM,·therefore·the·object·files·get·the·suffix | 128 | the·object·code,·is·called·BEAM,·therefore·the·object·files·get·the·suffix |
| 129 | <code·class="inline">.beam</code>.·The·compiler·can·also·generate·a·binary·which·can·be·loaded·directly.</p><p>The·compiler·is·located·in·the·module·<a·href="../../lib/compiler-8.6/doc/html/compile.html"><code·class="inline">compile</code></a>·in·Compiler.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">compile</span><span·class="p">:</span><span·class="nf">file</span><span·class="p"·data-group-id=" | 129 | <code·class="inline">.beam</code>.·The·compiler·can·also·generate·a·binary·which·can·be·loaded·directly.</p><p>The·compiler·is·located·in·the·module·<a·href="../../lib/compiler-8.6/doc/html/compile.html"><code·class="inline">compile</code></a>·in·Compiler.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">compile</span><span·class="p">:</span><span·class="nf">file</span><span·class="p"·data-group-id="0377897339-1">(</span><span·class="n">Module</span><span·class="p"·data-group-id="0377897339-1">)</span><span·class="w"> |
| 130 | </span><span·class="nc">compile</span><span·class="p">:</span><span·class="nf">file</span><span·class="p"·data-group-id=" | 130 | </span><span·class="nc">compile</span><span·class="p">:</span><span·class="nf">file</span><span·class="p"·data-group-id="0377897339-2">(</span><span·class="n">Module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Options</span><span·class="p"·data-group-id="0377897339-2">)</span></code></pre><p>The·Erlang·shell·understands·the·command·<code·class="inline">c(Module)</code>,·which·both·compiles·and |
| 131 | loads·<code·class="inline">Module</code>.</p><p>There·is·also·a·module·<code·class="inline">make</code>,·which·provides·a·set·of·functions·similar·to·the | 131 | loads·<code·class="inline">Module</code>.</p><p>There·is·also·a·module·<code·class="inline">make</code>,·which·provides·a·set·of·functions·similar·to·the |
| 132 | UNIX·type·Make·functions,·see·module·<a·href="../../lib/tools-4.1.1/doc/html/make.html"><code·class="inline">make</code></a>·in·Tools.</p><p>The·compiler·can·also·be·accessed·from·the·OS·prompt·using·the | 132 | UNIX·type·Make·functions,·see·module·<a·href="../../lib/tools-4.1.1/doc/html/make.html"><code·class="inline">make</code></a>·in·Tools.</p><p>The·compiler·can·also·be·accessed·from·the·OS·prompt·using·the |
| 133 | <a·href="../../erts-15.2.3/doc/html/erl_cmd.html">erl</a>·executable·in·ERTS.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl·-compile·Module1...ModuleN</span><span·class="w"> | 133 | <a·href="../../erts-15.2.3/doc/html/erl_cmd.html">erl</a>·executable·in·ERTS.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl·-compile·Module1...ModuleN</span><span·class="w"> |
| 134 | </span><span·class="c1">%·erl·-make</span></code></pre><p>The·<code·class="inline">erlc</code>·program·provides·way·to·compile·modules·from·the·OS | 134 | </span><span·class="c1">%·erl·-make</span></code></pre><p>The·<code·class="inline">erlc</code>·program·provides·way·to·compile·modules·from·the·OS |
| 135 | shell,·see·the·<a·href="../../erts-15.2.3/doc/html/erlc_cmd.html">erlc</a>·executable·in·ERTS.·It | 135 | shell,·see·the·<a·href="../../erts-15.2.3/doc/html/erlc_cmd.html">erlc</a>·executable·in·ERTS.·It |
| 136 | understands·a·number·of·flags·that·can·be·used·to·define·macros,·add·search | 136 | understands·a·number·of·flags·that·can·be·used·to·define·macros,·add·search |
| 137 | paths·for·include·files,·and·more.</p><pre><code·class="text">%·erlc·<flags>·File1.erl...FileN.erl</code></pre><p><a·href=""·id="loading"></a></p><h2·id="code-loading"·class="section-heading"> | 137 | paths·for·include·files,·and·more.</p><pre><code·class="text">%·erlc·<flags>·File1.erl...FileN.erl</code></pre><p><a·href=""·id="loading"></a></p><h2·id="code-loading"·class="section-heading"> |
| Offset 156, 54 lines modified | Offset 156, 54 lines modified | ||
| 156 | When·a·module·is·loaded·into·the·system·for·the·first·time,·the·code·becomes | 156 | When·a·module·is·loaded·into·the·system·for·the·first·time,·the·code·becomes |
| 157 | 'current'.·If·then·a·new·instance·of·the·module·is·loaded,·the·code·of·the | 157 | 'current'.·If·then·a·new·instance·of·the·module·is·loaded,·the·code·of·the |
| 158 | previous·instance·becomes·'old'·and·the·new·instance·becomes·'current'.</p><p>Both·old·and·current·code·is·valid,·and·can·be·evaluated·concurrently.·Fully | 158 | previous·instance·becomes·'old'·and·the·new·instance·becomes·'current'.</p><p>Both·old·and·current·code·is·valid,·and·can·be·evaluated·concurrently.·Fully |
| 159 | qualified·function·calls·always·refer·to·current·code.·Old·code·can·still·be | 159 | qualified·function·calls·always·refer·to·current·code.·Old·code·can·still·be |
| 160 | evaluated·because·of·processes·lingering·in·the·old·code.</p><p>If·a·third·instance·of·the·module·is·loaded,·the·code·server·removes·(purges) | 160 | evaluated·because·of·processes·lingering·in·the·old·code.</p><p>If·a·third·instance·of·the·module·is·loaded,·the·code·server·removes·(purges) |
| 161 | the·old·code·and·any·processes·lingering·in·it·is·terminated.·Then·the·third | 161 | the·old·code·and·any·processes·lingering·in·it·is·terminated.·Then·the·third |
| 162 | instance·becomes·'current'·and·the·previously·current·code·becomes·'old'.</p><p>To·change·from·old·code·to·current·code,·a·process·must·make·a·fully·qualified | 162 | instance·becomes·'current'·and·the·previously·current·code·becomes·'old'.</p><p>To·change·from·old·code·to·current·code,·a·process·must·make·a·fully·qualified |
| 163 | function·call.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 163 | function·call.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="3363826712-1">(</span><span·class="ss">m</span><span·class="p"·data-group-id="3363826712-1">)</span><span·class="p">.</span><span·class="w"> |
| 164 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 164 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="3363826712-2">(</span><span·class="p"·data-group-id="3363826712-3">[</span><span·class="ss">loop</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data-group-id="3363826712-3">]</span><span·class="p"·data-group-id="3363826712-2">)</span><span·class="p">.</span><span·class="w"> |
| 165 | </span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 165 | </span><span·class="nf">loop</span><span·class="p"·data-group-id="3363826712-4">(</span><span·class="p"·data-group-id="3363826712-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 166 | ····</span><span·class="k">receive</span><span·class="w"> | 166 | ····</span><span·class="k">receive</span><span·class="w"> |
| 167 | ········</span><span·class="ss">code_switch</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 167 | ········</span><span·class="ss">code_switch</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 168 | ············</span><span·class="nc">m</span><span·class="p">:</span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 168 | ············</span><span·class="nc">m</span><span·class="p">:</span><span·class="nf">loop</span><span·class="p"·data-group-id="3363826712-5">(</span><span·class="p"·data-group-id="3363826712-5">)</span><span·class="p">;</span><span·class="w"> |
| 169 | ········</span><span·class="n">Msg</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 169 | ········</span><span·class="n">Msg</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 170 | ············</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 170 | ············</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 171 | ············</span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 171 | ············</span><span·class="nf">loop</span><span·class="p"·data-group-id="3363826712-6">(</span><span·class="p"·data-group-id="3363826712-6">)</span><span·class="w"> |
| 172 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>To·make·the·process·change·code,·send·the·message·<code·class="inline">code_switch</code>·to·it.·The | 172 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>To·make·the·process·change·code,·send·the·message·<code·class="inline">code_switch</code>·to·it.·The |
| 173 | process·then·makes·a·fully·qualified·call·to·<code·class="inline">m:loop()</code>·and·changes·to·current | 173 | process·then·makes·a·fully·qualified·call·to·<code·class="inline">m:loop()</code>·and·changes·to·current |
| 174 | code.·Notice·that·<code·class="inline">m:loop/0</code>·must·be·exported.</p><p>For·code·replacement·of·funs·to·work,·use·the·syntax | 174 | code.·Notice·that·<code·class="inline">m:loop/0</code>·must·be·exported.</p><p>For·code·replacement·of·funs·to·work,·use·the·syntax |
| 175 | <code·class="inline">fun·Module:FunctionName/Arity</code>.</p><p><a·href=""·id="on_load"></a></p><h2·id="running-a-function-when-a-module-is-loaded"·class="section-heading"> | 175 | <code·class="inline">fun·Module:FunctionName/Arity</code>.</p><p><a·href=""·id="on_load"></a></p><h2·id="running-a-function-when-a-module-is-loaded"·class="section-heading"> |
| 176 | ··<a·href="#running-a-function-when-a-module-is-loaded"·class="hover-link"> | 176 | ··<a·href="#running-a-function-when-a-module-is-loaded"·class="hover-link"> |
| 177 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 177 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 178 | ··</a> | 178 | ··</a> |
| 179 | ··<span·class="text">Running·a·Function·When·a·Module·is·Loaded</span> | 179 | ··<span·class="text">Running·a·Function·When·a·Module·is·Loaded</span> |
| 180 | </h2> | 180 | </h2> |
| 181 | <p>The·<code·class="inline">-on_load()</code>·directive·names·a·function·that·is·to·be·run·automatically·when | 181 | <p>The·<code·class="inline">-on_load()</code>·directive·names·a·function·that·is·to·be·run·automatically·when |
| 182 | a·module·is·loaded.</p><p>Its·syntax·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">on_load</span><span·class="p"·data-group-id=" | 182 | a·module·is·loaded.</p><p>Its·syntax·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">on_load</span><span·class="p"·data-group-id="6948056275-1">(</span><span·class="n">Name</span><span·class="o">/</span><span·class="mi">0</span><span·class="p"·data-group-id="6948056275-1">)</span><span·class="p">.</span></code></pre><p>It·is·not·necessary·to·export·the·function.·It·is·called·in·a·freshly·spawned |
| 183 | process·(which·terminates·as·soon·as·the·function·returns).</p><p>The·function·must·return·<code·class="inline">ok</code>·if·the·module·is·to·become·the·new·current·code | 183 | process·(which·terminates·as·soon·as·the·function·returns).</p><p>The·function·must·return·<code·class="inline">ok</code>·if·the·module·is·to·become·the·new·current·code |
| 184 | for·the·module·and·become·callable.</p><p>Returning·any·other·value·or·generating·an·exception·causes·the·new·code·to·be | 184 | for·the·module·and·become·callable.</p><p>Returning·any·other·value·or·generating·an·exception·causes·the·new·code·to·be |
| 185 | unloaded.·If·the·return·value·is·not·an·atom,·a·warning·error·report·is·sent·to | 185 | unloaded.·If·the·return·value·is·not·an·atom,·a·warning·error·report·is·sent·to |
| 186 | the·error·logger.</p><p>If·there·already·is·current·code·for·the·module,·that·code·will·remain·current | 186 | the·error·logger.</p><p>If·there·already·is·current·code·for·the·module,·that·code·will·remain·current |
| 187 | and·can·be·called·until·the·<code·class="inline">on_load</code>·function·has·returned.·If·the·<code·class="inline">on_load</code> | 187 | and·can·be·called·until·the·<code·class="inline">on_load</code>·function·has·returned.·If·the·<code·class="inline">on_load</code> |
| 188 | function·fails,·the·current·code·(if·any)·will·remain·current.·If·there·is·no | 188 | function·fails,·the·current·code·(if·any)·will·remain·current.·If·there·is·no |
| 189 | current·code·for·a·module,·any·process·that·makes·an·external·call·to·the·module | 189 | current·code·for·a·module,·any·process·that·makes·an·external·call·to·the·module |
| 190 | before·the·<code·class="inline">on_load</code>·function·has·finished·will·be·suspended·until·the·<code·class="inline">on_load</code> | 190 | before·the·<code·class="inline">on_load</code>·function·has·finished·will·be·suspended·until·the·<code·class="inline">on_load</code> |
| 191 | function·have·finished.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Change</h4><p>Before·Erlang/OTP·19,·if·the·<code·class="inline">on_load</code>·function·failed,·any·previously·current | 191 | function·have·finished.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Change</h4><p>Before·Erlang/OTP·19,·if·the·<code·class="inline">on_load</code>·function·failed,·any·previously·current |
| 192 | code·would·become·old,·essentially·leaving·the·system·without·any·working·and | 192 | code·would·become·old,·essentially·leaving·the·system·without·any·working·and |
| 193 | reachable·instance·of·the·module.</p></section><p>In·embedded·mode,·first·all·modules·are·loaded.·Then·all·<code·class="inline">on_load</code>·functions·are | 193 | reachable·instance·of·the·module.</p></section><p>In·embedded·mode,·first·all·modules·are·loaded.·Then·all·<code·class="inline">on_load</code>·functions·are |
| 194 | called.·The·system·is·terminated·unless·all·of·the·<code·class="inline">on_load</code>·functions·return | 194 | called.·The·system·is·terminated·unless·all·of·the·<code·class="inline">on_load</code>·functions·return |
| 195 | <code·class="inline">ok</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 195 | <code·class="inline">ok</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="8314377812-1">(</span><span·class="ss">m</span><span·class="p"·data-group-id="8314377812-1">)</span><span·class="p">.</span><span·class="w"> |
| 196 | </span><span·class="p">-</span><span·class="na">on_load</span><span·class="p"·data-group-id=" | 196 | </span><span·class="p">-</span><span·class="na">on_load</span><span·class="p"·data-group-id="8314377812-2">(</span><span·class="ss">load_my_nifs</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data-group-id="8314377812-2">)</span><span·class="p">.</span><span·class="w"> |
| 197 | </span><span·class="nf">load_my_nifs</span><span·class="p"·data-group-id=" | 197 | </span><span·class="nf">load_my_nifs</span><span·class="p"·data-group-id="8314377812-3">(</span><span·class="p"·data-group-id="8314377812-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 198 | ····</span><span·class="n">NifPath</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">,</span><span·class="w">····</span><span·class="c1">%Set·up·the·path·to·the·NIF·library.</span><span·class="w"> | 198 | ····</span><span·class="n">NifPath</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">,</span><span·class="w">····</span><span·class="c1">%Set·up·the·path·to·the·NIF·library.</span><span·class="w"> |
| 199 | ····</span><span·class="n">Info</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">,</span><span·class="w">·······</span><span·class="c1">%Initialize·the·Info·term</span><span·class="w"> | 199 | ····</span><span·class="n">Info</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">,</span><span·class="w">·······</span><span·class="c1">%Initialize·the·Info·term</span><span·class="w"> |
| 200 | ····</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">load_nif</span><span·class="p"·data-group-id=" | 200 | ····</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">load_nif</span><span·class="p"·data-group-id="8314377812-4">(</span><span·class="n">NifPath</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Info</span><span·class="p"·data-group-id="8314377812-4">)</span><span·class="p">.</span></code></pre><p>If·the·call·to·<a·href="../../erts-15.2.3/doc/html/erlang.html#load_nif/2"><code·class="inline">erlang:load_nif/2</code></a>·fails,·the·module·is·unloaded·and·a·warning |
| 201 | report·is·sent·to·the·error·loader.</p> | 201 | report·is·sent·to·the·error·loader.</p> |
| 202 | </div> | 202 | </div> |
| 203 | <div·class="bottom-actions"·id="bottom-actions"> | 203 | <div·class="bottom-actions"·id="bottom-actions"> |
| 204 | ··<div·class="bottom-actions-item"> | 204 | ··<div·class="bottom-actions-item"> |
| 205 | ······<a·href="distributed.html"·class="bottom-actions-button"·rel="prev"> | 205 | ······<a·href="distributed.html"·class="bottom-actions-button"·rel="prev"> |
| Offset 118, 31 lines modified | Offset 118, 31 lines modified | ||
| 118 | <p>This·section·lists·a·few·constructs·to·watch·out·for.</p><h2·id="operator"·class="section-heading"> | 118 | <p>This·section·lists·a·few·constructs·to·watch·out·for.</p><h2·id="operator"·class="section-heading"> |
| 119 | ··<a·href="#operator"·class="hover-link"> | 119 | ··<a·href="#operator"·class="hover-link"> |
| 120 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 120 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 121 | ··</a> | 121 | ··</a> |
| 122 | ··<span·class="text">Operator·<code·class="inline">++</code></span> | 122 | ··<span·class="text">Operator·<code·class="inline">++</code></span> |
| 123 | </h2> | 123 | </h2> |
| 124 | <p>The·<code·class="inline">++</code>·operator·copies·its·left-hand·side·operand.·That·is·clearly | 124 | <p>The·<code·class="inline">++</code>·operator·copies·its·left-hand·side·operand.·That·is·clearly |
| 125 | seen·if·we·do·our·own·implementation·in·Erlang:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">my_plus_plus</span><span·class="p"·data-group-id=" | 125 | seen·if·we·do·our·own·implementation·in·Erlang:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">my_plus_plus</span><span·class="p"·data-group-id="3414625948-1">(</span><span·class="p"·data-group-id="3414625948-2">[</span><span·class="n">H</span><span·class="p">|</span><span·class="n">T</span><span·class="p"·data-group-id="3414625948-2">]</span><span·class="p">,</span><span·class="w">·</span><span·cl[·...·truncated·by·diffoscope;·len:·60,·SHA:·004d7cca86e62c0a01d20b7cbcd7d387efb741d8414bfe105d202485e1352b8c·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 126 | ····</span><span·class="p"·data-group-id=" | 126 | ····</span><span·class="p"·data-group-id="3414625948-3">[</span><span·class="n">H</span><span·class="p">|</span><span·class="nf">my_plus_plus</span><span·class="p"·data-group-id="3414625948-4">(</span><span·class="n">T</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tail</spa[·...·truncated·by·diffoscope;·len:·96,·SHA:·37997aebc0d7ca78e3a779a6d72650e6982e9c63025f23620017e06a599cb830·...·]-3">]</span><span·class="p">;</span><span·class="w"> |
| 127 | </span><span·class="nf">my_plus_plus</span><span·class="p"·data-group-id=" | 127 | </span><span·class="nf">my_plus_plus</span><span·class="p"·data-group-id="3414625948-5">(</span><span·class="p"·data-group-id="3414625948-6">[</span><span·class="p"·data-group-id="3414625948-6">]</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tail</span><span·class="p"·data-group-id="3414625948-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 128 | ····</span><span·class="n">Tail</span><span·class="p">.</span></code></pre><p>We·must·be·careful·how·we·use·<code·class="inline">++</code>·in·a·loop.·First·is·how·not·to·use·it:</p><p><strong>DO·NOT</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">naive_reverse</span><span·class="p"·data-group-id=" | 128 | ····</span><span·class="n">Tail</span><span·class="p">.</span></code></pre><p>We·must·be·careful·how·we·use·<code·class="inline">++</code>·in·a·loop.·First·is·how·not·to·use·it:</p><p><strong>DO·NOT</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">naive_reverse</span><span·class="p"·data-group-id="3846162408-1">(</span><span·class="p"·data-group-id="3846162408-2">[</span><span·class="n">H</span><span·class="p">|</span><span·class="n">T</span><span·class="p"·data-group-id="3846162408-2">]</span><span·class="p"·data-group-id="3846162408-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 129 | ····</span><span·class="nf">naive_reverse</span><span·class="p"·data-group-id=" | 129 | ····</span><span·class="nf">naive_reverse</span><span·class="p"·data-group-id="3846162408-3">(</span><span·class="n">T</span><span·class="p"·data-group-id="3846162408-3">)</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="p"·data-group-id="3846162408-4">[</span><span·class="n">H</span><span·c[·...·truncated·by·diffoscope;·len:·34,·SHA:·5a370756edff8a6e846806a94c84b4713118d7269f6f508d5c253d8fac8fdfbf·...·]-4">]</span><span·class="p">;</span><span·class="w"> |
| 130 | </span><span·class="nf">naive_reverse</span><span·class="p"·data-group-id=" | 130 | </span><span·class="nf">naive_reverse</span><span·class="p"·data-group-id="3846162408-5">(</span><span·class="p"·data-group-id="3846162408-6">[</span><span·class="p"·data-group-id="3846162408-6">]</span><span·class="p"·data-group-id="3846162408-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 131 | ····</span><span·class="p"·data-group-id=" | 131 | ····</span><span·class="p"·data-group-id="3846162408-7">[</span><span·class="p"·data-group-id="3846162408-7">]</span><span·class="p">.</span></code></pre><p>As·the·<code·class="inline">++</code>·operator·copies·its·left-hand·side·operand,·the·growing |
| 132 | result·is·copied·repeatedly,·leading·to·quadratic·complexity.</p><p>On·the·other·hand,·using·<code·class="inline">++</code>·in·loop·like·this·is·perfectly·fine:</p><p><strong>OK</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">naive_but_ok_reverse</span><span·class="p"·data-group-id=" | 132 | result·is·copied·repeatedly,·leading·to·quadratic·complexity.</p><p>On·the·other·hand,·using·<code·class="inline">++</code>·in·loop·like·this·is·perfectly·fine:</p><p><strong>OK</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">naive_but_ok_reverse</span><span·class="p"·data-group-id="2415725110-1">(</span><span·class="n">List</span><span·class="p"·data-group-id="2415725110-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 133 | ····</span><span·class="nf">naive_but_ok_reverse</span><span·class="p"·data-group-id=" | 133 | ····</span><span·class="nf">naive_but_ok_reverse</span><span·class="p"·data-group-id="2415725110-2">(</span><span·class="n">List</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2415725110-3">[</span><span·class="p"·data-group-id="2415725110-3">]</span><span·class="p"·data-group-id="2415725110-2">)</span><span·class="p">.</span><span·class="w"> |
| 134 | </span><span·class="nf">naive_but_ok_reverse</span><span·class="p"·data-group-id=" | 134 | </span><span·class="nf">naive_but_ok_reverse</span><span·class="p"·data-group-id="2415725110-4">(</span><span·class="p"·data-group-id="2415725110-5">[</span><span·class="n">H</span><span·class="p">|</span><span·class="n">T</span><span·class="p"·data-group-id="2415725110-5">]</span><span·class="p">,</span><span·class="w">·</span><span·cl[·...·truncated·by·diffoscope;·len:·59,·SHA:·c6a0d996a19d7650626829e72195a43ca2fb351d0d61d02969a8a42712c49cc7·...·]-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 135 | ····</span><span·class="nf">naive_but_ok_reverse</span><span·class="p"·data-group-id=" | 135 | ····</span><span·class="nf">naive_but_ok_reverse</span><span·class="p"·data-group-id="2415725110-6">(</span><span·class="n">T</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2415725110-7">[</span><span·class="n">H</span><span·class="p"·data-group-id="2415725110-7">]</span><span·class="w">·</span><span·cl[·...·truncated·by·diffoscope;·len:·108,·SHA:·3d7808c7d28057da6bd4eac900bb8b2fe942a3431d713aa23817dd7624341b37·...·]-6">)</span><span·class="p">;</span><span·class="w"> |
| 136 | </span><span·class="nf">naive_but_ok_reverse</span><span·class="p"·data-group-id=" | 136 | </span><span·class="nf">naive_but_ok_reverse</span><span·class="p"·data-group-id="2415725110-8">(</span><span·class="p"·data-group-id="2415725110-9">[</span><span·class="p"·data-group-id="2415725110-9">]</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Acc</span><span·class="p"·data-group-id="2415725110-8">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 137 | ····</span><span·class="n">Acc</span><span·class="p">.</span></code></pre><p>Each·list·element·is·copied·only·once.·The·growing·result·<code·class="inline">Acc</code>·is·the·right-hand | 137 | ····</span><span·class="n">Acc</span><span·class="p">.</span></code></pre><p>Each·list·element·is·copied·only·once.·The·growing·result·<code·class="inline">Acc</code>·is·the·right-hand |
| 138 | side·operand,·which·it·is·<em>not</em>·copied.</p><p>Experienced·Erlang·programmers·would·probably·write·as·follows:</p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">vanilla_reverse</span><span·class="p"·data-group-id=" | 138 | side·operand,·which·it·is·<em>not</em>·copied.</p><p>Experienced·Erlang·programmers·would·probably·write·as·follows:</p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">vanilla_reverse</span><span·class="p"·data-group-id="9493257482-1">(</span><span·class="p"·data-group-id="9493257482-2">[</span><span·class="n">H</span><span·class="p">|</span><span·class="n">T</span><span·class="p"·data-group-id="9493257482-2">]</span><span·class="p">,</span><span·class="w">·</span><span·cl[·...·truncated·by·diffoscope;·len:·59,·SHA:·bb15da0772f0f743b4e58e9fc014a6c2f70ff8796ebf728f053b33465d17e795·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 139 | ····</span><span·class="nf">vanilla_reverse</span><span·class="p"·data-group-id=" | 139 | ····</span><span·class="nf">vanilla_reverse</span><span·class="p"·data-group-id="9493257482-3">(</span><span·class="n">T</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9493257482-4">[</span><span·class="n">H</span><span·class="p">|</span><span·class="n">Acc</span><span·class="p"·data-group-id="9493[·...·truncated·by·diffoscope;·len:·59,·SHA:·eeab517dd10ce0c55804eb3632c0b410dc877141f19f4491a6da61de9fa6e63b·...·]-3">)</span><span·class="p">;</span><span·class="w"> |
| 140 | </span><span·class="nf">vanilla_reverse</span><span·class="p"·data-group-id=" | 140 | </span><span·class="nf">vanilla_reverse</span><span·class="p"·data-group-id="9493257482-5">(</span><span·class="p"·data-group-id="9493257482-6">[</span><span·class="p"·data-group-id="9493257482-6">]</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Acc</span><span·class="p"·data-group-id="9493257482-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 141 | ····</span><span·class="n">Acc</span><span·class="p">.</span></code></pre><p>In·principle,·this·is·slightly·more·efficient·because·the·list·element·<code·class="inline">[H]</code> | 141 | ····</span><span·class="n">Acc</span><span·class="p">.</span></code></pre><p>In·principle,·this·is·slightly·more·efficient·because·the·list·element·<code·class="inline">[H]</code> |
| 142 | is·not·built·before·being·copied·and·discarded.·In·practice,·the·compiler | 142 | is·not·built·before·being·copied·and·discarded.·In·practice,·the·compiler |
| 143 | rewrites·<code·class="inline">[H]·++·Acc</code>·to·<code·class="inline">[H|Acc]</code>.</p><h2·id="timer-module"·class="section-heading"> | 143 | rewrites·<code·class="inline">[H]·++·Acc</code>·to·<code·class="inline">[H|Acc]</code>.</p><h2·id="timer-module"·class="section-heading"> |
| 144 | ··<a·href="#timer-module"·class="hover-link"> | 144 | ··<a·href="#timer-module"·class="hover-link"> |
| 145 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 145 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 146 | ··</a> | 146 | ··</a> |
| 147 | ··<span·class="text">Timer·Module</span> | 147 | ··<span·class="text">Timer·Module</span> |
| Offset 160, 77 lines modified | Offset 160, 77 lines modified | ||
| 160 | therefore·harmless.</p><h2·id="accidental-copying-and-loss-of-sharing"·class="section-heading"> | 160 | therefore·harmless.</p><h2·id="accidental-copying-and-loss-of-sharing"·class="section-heading"> |
| 161 | ··<a·href="#accidental-copying-and-loss-of-sharing"·class="hover-link"> | 161 | ··<a·href="#accidental-copying-and-loss-of-sharing"·class="hover-link"> |
| 162 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 162 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 163 | ··</a> | 163 | ··</a> |
| 164 | ··<span·class="text">Accidental·Copying·and·Loss·of·Sharing</span> | 164 | ··<span·class="text">Accidental·Copying·and·Loss·of·Sharing</span> |
| 165 | </h2> | 165 | </h2> |
| 166 | <p>When·spawning·a·new·process·using·a·fun,·one·can·accidentally·copy·more·data·to | 166 | <p>When·spawning·a·new·process·using·a·fun,·one·can·accidentally·copy·more·data·to |
| 167 | the·process·than·intended.·For·example:</p><p><strong>DO·NOT</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">accidental1</span><span·class="p"·data-group-id=" | 167 | the·process·than·intended.·For·example:</p><p><strong>DO·NOT</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">accidental1</span><span·class="p"·data-group-id="5612472085-1">(</span><span·class="n">State</span><span·class="p"·data-group-id="5612472085-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 168 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id=" | 168 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id="5612472085-2">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="5612472085-3">(</span><span·class="p"·data-group-id="5612472085-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 169 | ··················</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 169 | ··················</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="5612472085-4">(</span><span·class="s">"</span><span·class="si">~p</span><span·class="s">\n"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5612472085-5">[</span><span·class="n">State</span><span·class="o">#</[·...·truncated·by·diffoscope;·len:·179,·SHA:·8ff7030bfc87ba05a8b7261e5814feede03a705c82628d3d89d19dc5110c69aa·...·]5-4">)</span><span·class="w"> |
| 170 | ··········</span><span·class="k">end</span><span·class="p"·data-group-id=" | 170 | ··········</span><span·class="k">end</span><span·class="p"·data-group-id="5612472085-2">)</span><span·class="p">.</span></code></pre><p>The·code·in·the·fun·will·extract·one·element·from·the·record·and·print·it.·The |
| 171 | rest·of·the·<code·class="inline">state</code>·record·is·not·used.·However,·when·the·<a·href="../../erts-15.2.3/doc/html/erlang.html#spawn/1"><code·class="inline">spawn/1</code></a> | 171 | rest·of·the·<code·class="inline">state</code>·record·is·not·used.·However,·when·the·<a·href="../../erts-15.2.3/doc/html/erlang.html#spawn/1"><code·class="inline">spawn/1</code></a> |
| 172 | function·is·executed,·the·entire·record·is·copied·to·the·newly·created·process.</p><p>The·same·kind·of·problem·can·happen·with·a·map:</p><p><strong>DO·NOT</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">accidental2</span><span·class="p"·data-group-id=" | 172 | function·is·executed,·the·entire·record·is·copied·to·the·newly·created·process.</p><p>The·same·kind·of·problem·can·happen·with·a·map:</p><p><strong>DO·NOT</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">accidental2</span><span·class="p"·data-group-id="1088869105-1">(</span><span·class="n">State</span><span·class="p"·data-group-id="1088869105-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 173 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id=" | 173 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id="1088869105-2">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="1088869105-3">(</span><span·class="p"·data-group-id="1088869105-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 174 | ··················</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 174 | ··················</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="1088869105-4">(</span><span·class="s">"</span><span·class="si">~p</span><span·class="s">\n"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1088869105-5">[</span><span·class="nf">map_get</span><span·class="p"·[·...·truncated·by·diffoscope;·len:·288,·SHA:·60786a525ce774d6e8c98ab9e1a0ceea43672f46fb654dad289f88542439cb56·...·]-4">)</span><span·class="w"> |
| 175 | ··········</span><span·class="k">end</span><span·class="p"·data-group-id=" | 175 | ··········</span><span·class="k">end</span><span·class="p"·data-group-id="1088869105-2">)</span><span·class="p">.</span></code></pre><p>In·the·following·example·(part·of·a·module·implementing·the·<a·href="../../lib/stdlib-6.2.1/doc/html/gen_server.html"><code·class="inline">gen_server</code></a> |
| 176 | behavior)·the·created·fun·is·sent·to·another·process:</p><p><strong>DO·NOT</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">handle_call</span><span·class="p"·data-group-id=" | 176 | behavior)·the·created·fun·is·sent·to·another·process:</p><p><strong>DO·NOT</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">handle_call</span><span·class="p"·data-group-id="8240455949-1">(</span><span·class="ss">give_me_a_fun</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">From</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="p"·data-g[·...·truncated·by·diffoscope;·len:·19,·SHA:·b4bd1701a07f2916be7a4c1a7362b4ae7653729634059c2b9b7e1cbb2434b007·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 177 | ····</span><span·class="n">Fun</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 177 | ····</span><span·class="n">Fun</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="8240455949-2">(</span><span·class="p"·data-group-id="8240455949-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">State</span><span·class="o">#</span><span·class="ss">state</span><span·class="p">.</span><span·class="nb">size</span><span·class="w">·</span><span·class="o">=:=</span><span·class="w">·</span><span·class="mi">42</span><span·class="w">·</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 178 | ····</span><span·class="p"·data-group-id=" | 178 | ····</span><span·class="p"·data-group-id="8240455949-3">{</span><span·class="ss">reply</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Fun</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="p"·data-group-id="8240455949-3">}</span><span·class="p">.</span></code></pre><p>How·bad·that·unnecessary·copy·is·depends·on·the·contents·of·the·record·or·the |
| 179 | map.</p><p>For·example,·if·the·<code·class="inline">state</code>·record·is·initialized·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">init1</span><span·class="p"·data-group-id="48 | 179 | map.</p><p>For·example,·if·the·<code·class="inline">state</code>·record·is·initialized·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">init1</span><span·class="p"·data-group-id="4879000013-1">(</span><span·class="p"·data-group-id="4879000013-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 180 | ····</span><span·class="o">#</span><span·class="ss">state</span><span·class="p"·data-group-id="48 | 180 | ····</span><span·class="o">#</span><span·class="ss">state</span><span·class="p"·data-group-id="4879000013-2">{</span><span·class="ss">data</span><span·class="o">=</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">seq</span><span·class="p"·data-group-id="4879000013-3">(</span><span·class="mi">1</span><span·class="p">,</span><s[·...·truncated·by·diffoscope;·len:·145,·SHA:·48cdefb14ae28deb2be07d044c177f0fbbeed82a90a002f3e33c18d27f2c122f·...·]-2">}</span><span·class="p">.</span></code></pre><p>a·list·with·10000·elements·(or·about·20000·heap·words)·will·be·copied·to·the |
| 181 | newly·created·process.</p><p>An·unnecessary·copy·of·10000·element·list·can·be·bad·enough,·but·it·can·get·even | 181 | newly·created·process.</p><p>An·unnecessary·copy·of·10000·element·list·can·be·bad·enough,·but·it·can·get·even |
| 182 | worse·if·the·<code·class="inline">state</code>·record·contains·<em>shared·subterms</em>.·Here·is·a·simple·example | 182 | worse·if·the·<code·class="inline">state</code>·record·contains·<em>shared·subterms</em>.·Here·is·a·simple·example |
| 183 | of·a·term·with·a·shared·subterm:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 183 | of·a·term·with·a·shared·subterm:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="5761500167-1">{</span><span·class="n">SubTerm</span><span·class="p">,</span><span·class="w">·</span><span·class="n">SubTerm</span><span·class="p"·data-group-id="5761500167-1">}</span></code></pre><p>When·a·term·is·copied·to·another·process,·sharing·of·subterms·will·be·lost·and |
| 184 | the·copied·term·can·be·many·times·larger·than·the·original·term.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">init2</span><span·class="p"·data-group-id="78 | 184 | the·copied·term·can·be·many·times·larger·than·the·original·term.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">init2</span><span·class="p"·data-group-id="1782295539-1">(</span><span·class="p"·data-group-id="1782295539-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 185 | ····</span><span·class="n">SharedSubTerms</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">foldl</span><span·class="p"·data-group-id="78 | 185 | ····</span><span·class="n">SharedSubTerms</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">foldl</span><span·class="p"·data-group-id="1782295539-2">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="1782295539-3">(</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·class="n">A</span><span·class="p"·data-group-id="1782295539-3">)</span><span[·...·truncated·by·diffoscope;·len:·851,·SHA:·8c4723e68069d82f3ec55fab80d7469775c64bc474882531ca1a919affcc1a8a·...·]9-2">)</span><span·class="p">,</span><span·class="w"> |
| 186 | ····</span><span·class="o">#</span><span·class="ss">state</span><span·class="p"·data-group-id="78 | 186 | ····</span><span·class="o">#</span><span·class="ss">state</span><span·class="p"·data-group-id="1782295539-7">{</span><span·class="ss">data</span><span·class="o">=</span><span·class="n">Shared</span><span·class="p"·data-group-id="1782295539-7">}</span><span·class="p">.</span></code></pre><p>In·the·process·that·calls·<code·class="inline">init2/0</code>,·the·size·of·the·<code·class="inline">data</code>·field·in·the·<code·class="inline">state</code> |
| 187 | record·will·be·32·heap·words.·When·the·record·is·copied·to·the·newly·created | 187 | record·will·be·32·heap·words.·When·the·record·is·copied·to·the·newly·created |
| 188 | process,·sharing·will·be·lost·and·the·size·of·the·copied·<code·class="inline">data</code>·field·will·be | 188 | process,·sharing·will·be·lost·and·the·size·of·the·copied·<code·class="inline">data</code>·field·will·be |
| 189 | 131070·heap·words.·More·details·about | 189 | 131070·heap·words.·More·details·about |
| 190 | <a·href="eff_guide_processes.html#loss-of-sharing">loss·off·sharing</a>·are·found·in·a·later | 190 | <a·href="eff_guide_processes.html#loss-of-sharing">loss·off·sharing</a>·are·found·in·a·later |
| 191 | section.</p><p>To·avoid·the·problem,·outside·of·the·fun·extract·only·the·fields·of·the·record | 191 | section.</p><p>To·avoid·the·problem,·outside·of·the·fun·extract·only·the·fields·of·the·record |
| 192 | that·are·actually·used:</p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fixed_accidental1</span><span·class="p"·data-group-id="3 | 192 | that·are·actually·used:</p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fixed_accidental1</span><span·class="p"·data-group-id="3688345662-1">(</span><span·class="n">State</span><span·class="p"·data-group-id="3688345662-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 193 | ····</span><span·class="n">Info</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">State</span><span·class="o">#</span><span·class="ss">state</span><span·class="p">.</span><span·class="ss">info</span><span·class="p">,</span><span·class="w"> | 193 | ····</span><span·class="n">Info</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">State</span><span·class="o">#</span><span·class="ss">state</span><span·class="p">.</span><span·class="ss">info</span><span·class="p">,</span><span·class="w"> |
| 194 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id="3 | 194 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id="3688345662-2">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="3688345662-3">(</span><span·class="p"·data-group-id="3688345662-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 195 | ··················</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="3 | 195 | ··················</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="3688345662-4">(</span><span·class="s">"</span><span·class="si">~p</span><span·class="s">\n"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3688345662-5">[</span><span·class="n">Info</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·73,·SHA:·697dd16d6518b3b6e90f1df4a6c71cb23505d26c81b8fce285fe121eff5f9e24·...·]-4">)</span><span·class="w"> |
| 196 | ··········</span><span·class="k">end</span><span·class="p"·data-group-id="3 | 196 | ··········</span><span·class="k">end</span><span·class="p"·data-group-id="3688345662-2">)</span><span·class="p">.</span></code></pre><p>Similarly,·outside·of·the·fun·extract·only·the·map·elements·that·are·actually |
| 197 | used:</p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fixed_accidental2</span><span·class="p"·data-group-id=" | 197 | used:</p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fixed_accidental2</span><span·class="p"·data-group-id="6876642597-1">(</span><span·class="n">State</span><span·class="p"·data-group-id="6876642597-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 198 | ····</span><span·class="n">Info</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">map_get</span><span·class="p"·data-group-id=" | 198 | ····</span><span·class="n">Info</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">map_get</span><span·class="p"·data-group-id="6876642597-2">(</span><span·class="ss">info</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="p"·data-group-id="6876642597-2">)</span><span·class="p">,</span><span·class="w"> |
| 199 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id=" | 199 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id="6876642597-3">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="6876642597-4">(</span><span·class="p"·data-group-id="6876642597-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 200 | ··················</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 200 | ··················</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="6876642597-5">(</span><span·class="s">"</span><span·class="si">~p</span><span·class="s">\n"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6876642597-6">[</span><span·class="n">Info</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·74,·SHA:·0409be8a0638906fbb47df5ab4f6ea80b36eebb0d77a985517725084ed8794d2·...·]-5">)</span><span·class="w"> |
| 201 | ··········</span><span·class="k">end</span><span·class="p"·data-group-id=" | 201 | ··········</span><span·class="k">end</span><span·class="p"·data-group-id="6876642597-3">)</span><span·class="p">.</span></code></pre><h2·id="list_to_atom-1"·class="section-heading"> |
| 202 | ··<a·href="#list_to_atom-1"·class="hover-link"> | 202 | ··<a·href="#list_to_atom-1"·class="hover-link"> |
| 203 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 203 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 204 | ··</a> | 204 | ··</a> |
| 205 | ··<span·class="text">list_to_atom/1</span> | 205 | ··<span·class="text">list_to_atom/1</span> |
| 206 | </h2> | 206 | </h2> |
| 207 | <p>Atoms·are·not·garbage-collected.·Once·an·atom·is·created,·it·is·never·removed. | 207 | <p>Atoms·are·not·garbage-collected.·Once·an·atom·is·created,·it·is·never·removed. |
| 208 | The·emulator·terminates·if·the·limit·for·the·number·of·atoms·(1,048,576·by | 208 | The·emulator·terminates·if·the·limit·for·the·number·of·atoms·(1,048,576·by |
| 209 | default)·is·reached.</p><p>Therefore,·converting·arbitrary·input·strings·to·atoms·can·be·dangerous·in·a | 209 | default)·is·reached.</p><p>Therefore,·converting·arbitrary·input·strings·to·atoms·can·be·dangerous·in·a |
| 210 | system·that·runs·continuously.·If·only·certain·well-defined·atoms·are·allowed·as | 210 | system·that·runs·continuously.·If·only·certain·well-defined·atoms·are·allowed·as |
| 211 | input,·<a·href="../../erts-15.2.3/doc/html/erlang.html#list_to_existing_atom/1"><code·class="inline">list_to_existing_atom/1</code></a>·or | 211 | input,·<a·href="../../erts-15.2.3/doc/html/erlang.html#list_to_existing_atom/1"><code·class="inline">list_to_existing_atom/1</code></a>·or |
| 212 | <a·href="../../erts-15.2.3/doc/html/erlang.html#binary_to_existing_atom/1"><code·class="inline">binary_to_existing_atom/1</code></a>·can·be·used | 212 | <a·href="../../erts-15.2.3/doc/html/erlang.html#binary_to_existing_atom/1"><code·class="inline">binary_to_existing_atom/1</code></a>·can·be·used |
| 213 | to·guard·against·a·denial-of-service·attack.·(All·atoms·that·are·allowed·must | 213 | to·guard·against·a·denial-of-service·attack.·(All·atoms·that·are·allowed·must |
| 214 | have·been·created·earlier,·for·example,·by·using·all·of·them·in·a·module | 214 | have·been·created·earlier,·for·example,·by·using·all·of·them·in·a·module |
| 215 | and·loading·that·module.)</p><p>Using·<a·href="../../erts-15.2.3/doc/html/erlang.html#list_to_atom/1"><code·class="inline">list_to_atom/1</code></a>·to·construct·an·atom·that | 215 | and·loading·that·module.)</p><p>Using·<a·href="../../erts-15.2.3/doc/html/erlang.html#list_to_atom/1"><code·class="inline">list_to_atom/1</code></a>·to·construct·an·atom·that |
| 216 | is·passed·to·<a·href="../../erts-15.2.3/doc/html/erlang.html#apply/3"><code·class="inline">apply/3</code></a>·is·quite·expensive.</p><p><strong>DO·NOT</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">apply</span><span·class="p"·data-group-id=" | 216 | is·passed·to·<a·href="../../erts-15.2.3/doc/html/erlang.html#apply/3"><code·class="inline">apply/3</code></a>·is·quite·expensive.</p><p><strong>DO·NOT</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">apply</span><span·class="p"·data-group-id="9661674770-1">(</span><span·class="nf">list_to_atom</span><span·class="p"·data-group-id="9661674770-2">(</span><span·class="s">"some_prefix"</span><span·class="o">++</span><span·class="n">Var</span><span·class="p"·data-group-id="9661674770-2">)</[·...·truncated·by·diffoscope;·len:·196,·SHA:·2fce5b78ad6d553af8b191f00c63a5f14688b4a9464dbdda2def7c79a1e5f37a·...·]-1">)</span></code></pre><h2·id="length-1"·class="section-heading"> |
| 217 | ··<a·href="#length-1"·class="hover-link"> | 217 | ··<a·href="#length-1"·class="hover-link"> |
| 218 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 218 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 219 | ··</a> | 219 | ··</a> |
| 220 | ··<span·class="text">length/1</span> | 220 | ··<span·class="text">length/1</span> |
| 221 | </h2> | 221 | </h2> |
| 222 | <p>The·time·for·calculating·the·length·of·a·list·is·proportional·to·the·length·of | 222 | <p>The·time·for·calculating·the·length·of·a·list·is·proportional·to·the·length·of |
| 223 | the·list,·as·opposed·to·<a·href="../../erts-15.2.3/doc/html/erlang.html#tuple_size/1"><code·class="inline">tuple_size/1</code></a>, | 223 | the·list,·as·opposed·to·<a·href="../../erts-15.2.3/doc/html/erlang.html#tuple_size/1"><code·class="inline">tuple_size/1</code></a>, |
| 224 | <a·href="../../erts-15.2.3/doc/html/erlang.html#byte_size/1"><code·class="inline">byte_size/1</code></a>,·and·<a·href="../../erts-15.2.3/doc/html/erlang.html#bit_size/1"><code·class="inline">bit_size/1</code></a>,·which·all | 224 | <a·href="../../erts-15.2.3/doc/html/erlang.html#byte_size/1"><code·class="inline">byte_size/1</code></a>,·and·<a·href="../../erts-15.2.3/doc/html/erlang.html#bit_size/1"><code·class="inline">bit_size/1</code></a>,·which·all |
| 225 | execute·in·constant·time.</p><p>Normally,·there·is·no·need·to·worry·about·the·speed·of·<a·href="../../erts-15.2.3/doc/html/erlang.html#length/1"><code·class="inline">length/1</code></a>, | 225 | execute·in·constant·time.</p><p>Normally,·there·is·no·need·to·worry·about·the·speed·of·<a·href="../../erts-15.2.3/doc/html/erlang.html#length/1"><code·class="inline">length/1</code></a>, |
| 226 | because·it·is·efficiently·implemented·in·C.·In·time-critical·code,·you·might | 226 | because·it·is·efficiently·implemented·in·C.·In·time-critical·code,·you·might |
| 227 | want·to·avoid·it·if·the·input·list·could·potentially·be·very·long.</p><p>Some·uses·of·<a·href="../../erts-15.2.3/doc/html/erlang.html#length/1"><code·class="inline">length/1</code></a>·can·be·replaced·by·matching.·For·example, | 227 | want·to·avoid·it·if·the·input·list·could·potentially·be·very·long.</p><p>Some·uses·of·<a·href="../../erts-15.2.3/doc/html/erlang.html#length/1"><code·class="inline">length/1</code></a>·can·be·replaced·by·matching.·For·example, |
| 228 | the·following·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">foo</span><span·class="p"·data-group-id=" | 228 | the·following·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">foo</span><span·class="p"·data-group-id="7829771100-1">(</span><span·class="n">L</span><span·class="p"·data-group-id="7829771100-1">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">length</span><span·class="p"·data-group-id="7829771100-2">(</span[·...·truncated·by·diffoscope;·len:·66,·SHA:·20e8054fa5ea2fc6371e4f0e3519125b629f1b6c8cf8edb9975ed79bae5990ae·...·]-2">)</span><span·class="w">·</span><span·class="o">>=</span><span·class="w">·</span><span·class="mi">3</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 229 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>can·be·rewritten·to:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">foo</span><span·class="p"·data-group-id=" | 229 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>can·be·rewritten·to:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">foo</span><span·class="p"·data-group-id="1354313873-1">(</span><span·class="p"·data-group-id="1354313873-2">[</span><span·class="p">_</span><span·class="p">,</span><span·class="p">_</span><span·class="p">,</span><span·class="p">_</span><span·class="p">|</span><span·class="p">_</span><span·class="[·...·truncated·by·diffoscope;·len:·129,·SHA:·7954509a4af9856a413f74f6685713a4325003118256ea4ba1a23c46bb66bdcf·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 230 | ···</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>One·slight·difference·is·that·<a·href="../../erts-15.2.3/doc/html/erlang.html#length/1"><code·class="inline">length(L)</code></a>·fails·if·<code·class="inline">L</code>·is·an | 230 | ···</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>One·slight·difference·is·that·<a·href="../../erts-15.2.3/doc/html/erlang.html#length/1"><code·class="inline">length(L)</code></a>·fails·if·<code·class="inline">L</code>·is·an |
| 231 | improper·list,·while·the·pattern·in·the·second·code·fragment·accepts·an·improper | 231 | improper·list,·while·the·pattern·in·the·second·code·fragment·accepts·an·improper |
| 232 | list.</p><h2·id="setelement-3"·class="section-heading"> | 232 | list.</p><h2·id="setelement-3"·class="section-heading"> |
| 233 | ··<a·href="#setelement-3"·class="hover-link"> | 233 | ··<a·href="#setelement-3"·class="hover-link"> |
| 234 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 234 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 235 | ··</a> | 235 | ··</a> |
| 236 | ··<span·class="text">setelement/3</span> | 236 | ··<span·class="text">setelement/3</span> |
| Offset 238, 18 lines modified | Offset 238, 18 lines modified | ||
| 238 | <p><a·href="../../erts-15.2.3/doc/html/erlang.html#setelement/3"><code·class="inline">setelement/3</code></a>·copies·the·tuple·it·modifies.·Therefore, | 238 | <p><a·href="../../erts-15.2.3/doc/html/erlang.html#setelement/3"><code·class="inline">setelement/3</code></a>·copies·the·tuple·it·modifies.·Therefore, |
| 239 | updating·a·tuple·in·a·loop·using·<a·href="../../erts-15.2.3/doc/html/erlang.html#setelement/3"><code·class="inline">setelement/3</code></a>·creates·a·new | 239 | updating·a·tuple·in·a·loop·using·<a·href="../../erts-15.2.3/doc/html/erlang.html#setelement/3"><code·class="inline">setelement/3</code></a>·creates·a·new |
| 240 | copy·of·the·tuple·every·time.</p><p>There·is·one·exception·to·the·rule·that·the·tuple·is·copied.·If·the·compiler | 240 | copy·of·the·tuple·every·time.</p><p>There·is·one·exception·to·the·rule·that·the·tuple·is·copied.·If·the·compiler |
| 241 | clearly·can·see·that·destructively·updating·the·tuple·would·give·the·same·result | 241 | clearly·can·see·that·destructively·updating·the·tuple·would·give·the·same·result |
| 242 | as·if·the·tuple·was·copied,·the·call·to·<a·href="../../erts-15.2.3/doc/html/erlang.html#setelement/3"><code·class="inline">setelement/3</code></a>·is | 242 | as·if·the·tuple·was·copied,·the·call·to·<a·href="../../erts-15.2.3/doc/html/erlang.html#setelement/3"><code·class="inline">setelement/3</code></a>·is |
| 243 | replaced·with·a·special·destructive·<code·class="inline">setelement</code>·instruction.·In·the·following | 243 | replaced·with·a·special·destructive·<code·class="inline">setelement</code>·instruction.·In·the·following |
| 244 | code·sequence,·the·first·<a·href="../../erts-15.2.3/doc/html/erlang.html#setelement/3"><code·class="inline">setelement/3</code></a>·call·copies·the·tuple | 244 | code·sequence,·the·first·<a·href="../../erts-15.2.3/doc/html/erlang.html#setelement/3"><code·class="inline">setelement/3</code></a>·call·copies·the·tuple |
| 245 | and·modifies·the·ninth·element:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">multiple_setelement</span><span·class="p"·data-group-id=" | 245 | and·modifies·the·ninth·element:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">multiple_setelement</span><span·class="p"·data-group-id="0440440485-1">(</span><span·class="n">T0</span><span·class="p"·data-group-id="0440440485-1">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">tuple_size</span><span·class="p"·data-group-id="0440440485-2">(<[·...·truncated·by·diffoscope;·len:·72,·SHA:·05ab5e34dd977ac91b1d53ca0960b67805fa41f89c1aa4bdec23d7cf83228a1d·...·]-2">)</span><span·class="w">·</span><span·class="o">=:=</span><span·class="w">·</span><span·class="mi">9</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 246 | ····</span><span·class="n">T1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">setelement</span><span·class="p"·data-group-id=" | 246 | ····</span><span·class="n">T1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">setelement</span><span·class="p"·data-group-id="0440440485-3">(</span><span·class="mi">9</span><span·class="p">,</span><span·class="w">·</span><span·class="n">T0</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">bar</span><span·class="p"·data-group-id="0440440485-3">)</span><span·class="p">,</span><span·class="w"> |
| 247 | ····</span><span·class="n">T2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">setelement</span><span·class="p"·data-group-id=" | 247 | ····</span><span·class="n">T2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">setelement</span><span·class="p"·data-group-id="0440440485-4">(</span><span·class="mi">7</span><span·class="p">,</span><span·class="w">·</span><span·class="n">T1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">foobar</span><span·class="p"·data-group-id="0440440485-4">)</span><span·class="p">,</span><span·class="w"> |
| 248 | ····</span><span·class="nf">setelement</span><span·class="p"·data-group-id=" | 248 | ····</span><span·class="nf">setelement</span><span·class="p"·data-group-id="0440440485-5">(</span><span·class="mi">5</span><span·class="p">,</span><span·class="w">·</span><span·class="n">T2</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">new_value</span><span·class="p"·data-group-id="0440440485-5">)</span><span·class="p">.</span></code></pre><p>The·two·following·<a·href="../../erts-15.2.3/doc/html/erlang.html#setelement/3"><code·class="inline">setelement/3</code></a>·calls·modify·the·tuple·in |
| 249 | place.</p><p>For·the·optimization·to·be·applied,·<em>all</em>·the·following·conditions·must·be·true:</p><ul><li>The·tuple·argument·must·be·known·to·be·a·tuple·of·a·known·size.</li><li>The·indices·must·be·integer·literals,·not·variables·or·expressions.</li><li>The·indices·must·be·given·in·descending·order.</li><li>There·must·be·no·calls·to·another·function·in·between·the·calls·to | 249 | place.</p><p>For·the·optimization·to·be·applied,·<em>all</em>·the·following·conditions·must·be·true:</p><ul><li>The·tuple·argument·must·be·known·to·be·a·tuple·of·a·known·size.</li><li>The·indices·must·be·integer·literals,·not·variables·or·expressions.</li><li>The·indices·must·be·given·in·descending·order.</li><li>There·must·be·no·calls·to·another·function·in·between·the·calls·to |
| 250 | <a·href="../../erts-15.2.3/doc/html/erlang.html#setelement/3"><code·class="inline">setelement/3</code></a>.</li><li>The·tuple·returned·from·one·<a·href="../../erts-15.2.3/doc/html/erlang.html#setelement/3"><code·class="inline">setelement/3</code></a>·call·must·only·be | 250 | <a·href="../../erts-15.2.3/doc/html/erlang.html#setelement/3"><code·class="inline">setelement/3</code></a>.</li><li>The·tuple·returned·from·one·<a·href="../../erts-15.2.3/doc/html/erlang.html#setelement/3"><code·class="inline">setelement/3</code></a>·call·must·only·be |
| 251 | used·in·the·subsequent·call·to·<a·href="../../erts-15.2.3/doc/html/erlang.html#setelement/3"><code·class="inline">setelement/3</code></a>.</li></ul><p>If·the·code·cannot·be·structured·as·in·the·<code·class="inline">multiple_setelement/1</code>·example,·the | 251 | used·in·the·subsequent·call·to·<a·href="../../erts-15.2.3/doc/html/erlang.html#setelement/3"><code·class="inline">setelement/3</code></a>.</li></ul><p>If·the·code·cannot·be·structured·as·in·the·<code·class="inline">multiple_setelement/1</code>·example,·the |
| 252 | best·way·to·modify·multiple·elements·in·a·large·tuple·is·to·convert·the·tuple·to | 252 | best·way·to·modify·multiple·elements·in·a·large·tuple·is·to·convert·the·tuple·to |
| 253 | a·list,·modify·the·list,·and·convert·it·back·to·a·tuple.</p><h2·id="size-1"·class="section-heading"> | 253 | a·list,·modify·the·list,·and·convert·it·back·to·a·tuple.</p><h2·id="size-1"·class="section-heading"> |
| 254 | ··<a·href="#size-1"·class="hover-link"> | 254 | ··<a·href="#size-1"·class="hover-link"> |
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| 132 | threads·of·execution·in·an·Erlang·program·and·to·allow·these·threads·to | 132 | threads·of·execution·in·an·Erlang·program·and·to·allow·these·threads·to |
| 133 | communicate·with·each·other.·In·Erlang,·each·thread·of·execution·is·called·a | 133 | communicate·with·each·other.·In·Erlang,·each·thread·of·execution·is·called·a |
| 134 | <em>process</em>.</p><p>(Aside:·the·term·"process"·is·usually·used·when·the·threads·of·execution·share | 134 | <em>process</em>.</p><p>(Aside:·the·term·"process"·is·usually·used·when·the·threads·of·execution·share |
| 135 | no·data·with·each·other·and·the·term·"thread"·when·they·share·data·in·some·way. | 135 | no·data·with·each·other·and·the·term·"thread"·when·they·share·data·in·some·way. |
| 136 | Threads·of·execution·in·Erlang·share·no·data,·that·is·why·they·are·called | 136 | Threads·of·execution·in·Erlang·share·no·data,·that·is·why·they·are·called |
| 137 | processes).</p><p>The·Erlang·BIF·<code·class="inline">spawn</code>·is·used·to·create·a·new·process: | 137 | processes).</p><p>The·Erlang·BIF·<code·class="inline">spawn</code>·is·used·to·create·a·new·process: |
| 138 | <code·class="inline">spawn(Module,·Exported_Function,·List·of·Arguments)</code>.·Consider·the·following | 138 | <code·class="inline">spawn(Module,·Exported_Function,·List·of·Arguments)</code>.·Consider·the·following |
| 139 | module:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 139 | module:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="7162486197-1">(</span><span·class="ss">tut14</span><span·class="p"·data-group-id="7162486197-1">)</span><span·class="p">.</span><span·class="w"> |
| 140 | </span><span·class="w"> | 140 | </span><span·class="w"> |
| 141 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 141 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="7162486197-2">(</span><span·class="p"·data-group-id="7162486197-3">[</span><span·class="ss">start</span><span·class="p">/</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">say_something</span><span·class="p">/<[·...·truncated·by·diffoscope;·len:·125,·SHA:·d58434b11116d0619c76dc9faacd8d54aab8055ebd6c1c1badf18968ee4183ef·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 142 | </span><span·class="nf">say_something</span><span·class="p"·data-group-id=" | 142 | </span><span·class="nf">say_something</span><span·class="p"·data-group-id="7162486197-4">(</span><span·class="n">What</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">0</span><span·class="p"·data-group-id="7162486197-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 143 | ····</span><span·class="ss">done</span><span·class="p">;</span><span·class="w"> | 143 | ····</span><span·class="ss">done</span><span·class="p">;</span><span·class="w"> |
| 144 | </span><span·class="nf">say_something</span><span·class="p"·data-group-id=" | 144 | </span><span·class="nf">say_something</span><span·class="p"·data-group-id="7162486197-5">(</span><span·class="n">What</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Times</span><span·class="p"·data-group-id="7162486197-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 145 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 145 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="7162486197-6">(</span><span·class="s">"</span><span·class="si">~p</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7162486197-7">[</span><span·class="n">What</s[·...·truncated·by·diffoscope;·len:·98,·SHA:·2f620ad7589541993bfaa431abcb5132411abc2369bab34eec60e3f32f90f998·...·]-6">)</span><span·class="p">,</span><span·class="w"> |
| 146 | ····</span><span·class="nf">say_something</span><span·class="p"·data-group-id=" | 146 | ····</span><span·class="nf">say_something</span><span·class="p"·data-group-id="7162486197-8">(</span><span·class="n">What</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Times</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="716[·...·truncated·by·diffoscope;·len:·7,·SHA:·cae7a2ca9f862e0873188d581841ec80549010ff5b6ba2e4125f01190cdddcca·...·]-8">)</span><span·class="p">.</span><span·class="w"> |
| 147 | </span><span·class="nf">start</span><span·class="p"·data-group-id=" | 147 | </span><span·class="nf">start</span><span·class="p"·data-group-id="7162486197-9">(</span><span·class="p"·data-group-id="7162486197-9">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 148 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id=" | 148 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id="7162486197-10">(</span><span·class="ss">tut14</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">say_something</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7162486197-11">[</span><span·class="ss">[·...·truncated·by·diffoscope;·len:·180,·SHA:·c1e7cb92adc2d636741fd8f8bf09efac2f84e8b0cd2317c85ce96a3b4a762d90·...·]-10">)</span><span·class="p">,</span><span·class="w"> |
| 149 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id=" | 149 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id="7162486197-12">(</span><span·class="ss">tut14</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">say_something</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7162486197-13">[</span><span·class="ss">[·...·truncated·by·diffoscope;·len:·471,·SHA:·a2eb7632cfaa656b819639fbc8feabf25eabbc1beb34035da80612e9aa79ec80·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 150 | </span><span·class="p"·data-group-id=" | 150 | </span><span·class="p"·data-group-id="4280113877-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="ss">tut14</span><span·class="p"·data-group-id="4280113877-2">}</span><span·class="gp·unselectable"> |
| 151 | 6>·</span><span·class="nc">tut14</span><span·class="p">:</span><span·class="nf">say_something</span><span·class="p"·data-group-id=" | 151 | 6>·</span><span·class="nc">tut14</span><span·class="p">:</span><span·class="nf">say_something</span><span·class="p"·data-group-id="4280113877-3">(</span><span·class="ss">hello</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">3</span><span·class="p"·data-group-id="4280113877-3">)</span><span·class="p">.</span><span·class="w"> |
| 152 | </span><span·class="ss">hello</span><span·class="w"> | 152 | </span><span·class="ss">hello</span><span·class="w"> |
| 153 | </span><span·class="ss">hello</span><span·class="w"> | 153 | </span><span·class="ss">hello</span><span·class="w"> |
| 154 | </span><span·class="ss">hello</span><span·class="w"> | 154 | </span><span·class="ss">hello</span><span·class="w"> |
| 155 | </span><span·class="ss">done</span></code></pre><p>As·shown,·the·function·<code·class="inline">say_something</code>·writes·its·first·argument·the·number·of | 155 | </span><span·class="ss">done</span></code></pre><p>As·shown,·the·function·<code·class="inline">say_something</code>·writes·its·first·argument·the·number·of |
| 156 | times·specified·by·second·argument.·The·function·<code·class="inline">start</code>·starts·two·Erlang | 156 | times·specified·by·second·argument.·The·function·<code·class="inline">start</code>·starts·two·Erlang |
| 157 | processes,·one·that·writes·"hello"·three·times·and·one·that·writes·"goodbye" | 157 | processes,·one·that·writes·"hello"·three·times·and·one·that·writes·"goodbye" |
| 158 | three·times.·Both·processes·use·the·function·<code·class="inline">say_something</code>.·Notice·that·a | 158 | three·times.·Both·processes·use·the·function·<code·class="inline">say_something</code>.·Notice·that·a |
| 159 | function·used·in·this·way·by·<code·class="inline">spawn</code>,·to·start·a·process,·must·be·exported·from | 159 | function·used·in·this·way·by·<code·class="inline">spawn</code>,·to·start·a·process,·must·be·exported·from |
| 160 | the·module·(that·is,·in·the·<code·class="inline">-export</code>·at·the·start·of·the·module).</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">9>·</span><span·class="nc">tut14</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 160 | the·module·(that·is,·in·the·<code·class="inline">-export</code>·at·the·start·of·the·module).</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">9>·</span><span·class="nc">tut14</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="8100890097-1">(</span><span·class="p"·data-group-id="8100890097-1">)</span><span·class="p">.</span><span·class="w"> |
| 161 | </span><span·class="ss">hello</span><span·class="w"> | 161 | </span><span·class="ss">hello</span><span·class="w"> |
| 162 | </span><span·class="ss">goodbye</span><span·class="w"> | 162 | </span><span·class="ss">goodbye</span><span·class="w"> |
| 163 | </span><span·class="o"><</span><span·class="mf">0.63</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w"> | 163 | </span><span·class="o"><</span><span·class="mf">0.63</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w"> |
| 164 | </span><span·class="ss">hello</span><span·class="w"> | 164 | </span><span·class="ss">hello</span><span·class="w"> |
| 165 | </span><span·class="ss">goodbye</span><span·class="w"> | 165 | </span><span·class="ss">goodbye</span><span·class="w"> |
| 166 | </span><span·class="ss">hello</span><span·class="w"> | 166 | </span><span·class="ss">hello</span><span·class="w"> |
| 167 | </span><span·class="ss">goodbye</span></code></pre><p>Notice·that·it·did·not·write·"hello"·three·times·and·then·"goodbye"·three·times. | 167 | </span><span·class="ss">goodbye</span></code></pre><p>Notice·that·it·did·not·write·"hello"·three·times·and·then·"goodbye"·three·times. |
| 168 | Instead,·the·first·process·wrote·a·"hello",·the·second·a·"goodbye",·the·first | 168 | Instead,·the·first·process·wrote·a·"hello",·the·second·a·"goodbye",·the·first |
| 169 | another·"hello"·and·so·forth.·But·where·did·the·<code·class="inline"><0.63.0></code>·come·from?·The·return | 169 | another·"hello"·and·so·forth.·But·where·did·the·<code·class="inline"><0.63.0></code>·come·from?·The·return |
| 170 | value·of·a·function·is·the·return·value·of·the·last·"thing"·in·the·function.·The | 170 | value·of·a·function·is·the·return·value·of·the·last·"thing"·in·the·function.·The |
| 171 | last·thing·in·the·function·<code·class="inline">start</code>·is</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">spawn</span><span·class="p"·data-group-id=" | 171 | last·thing·in·the·function·<code·class="inline">start</code>·is</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">spawn</span><span·class="p"·data-group-id="5963006126-1">(</span><span·class="ss">tut14</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">say_something</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5963006126-2">[</span><span·class="ss">go[·...·truncated·by·diffoscope;·len:·179,·SHA:·089ae42eb2c139e3453e820fe4592ba015f4dc63578c6bc4be8adb89899a1e80·...·]-1">)</span><span·class="p">.</span></code></pre><p><code·class="inline">spawn</code>·returns·a·<em>process·identifier</em>,·or·<em>pid</em>,·which·uniquely·identifies·the |
| 172 | process.·So·<code·class="inline"><0.63.0></code>·is·the·pid·of·the·<code·class="inline">spawn</code>·function·call·above.·The·next | 172 | process.·So·<code·class="inline"><0.63.0></code>·is·the·pid·of·the·<code·class="inline">spawn</code>·function·call·above.·The·next |
| 173 | example·shows·how·to·use·pids.</p><p>Notice·also·that·~p·is·used·instead·of·~w·in·<a·href="../../lib/stdlib-6.2.1/doc/html/io.html#format/2"><code·class="inline">io:format/2</code></a>.·To·quote·<a·href="../../lib/stdlib-6.2.1/doc/html/io.html#tilde_p">the·manual</a>:</p><blockquote><p>~p·Writes·the·data·with·standard·syntax·in·the·same·way·as·~w,·but·breaks·terms | 173 | example·shows·how·to·use·pids.</p><p>Notice·also·that·~p·is·used·instead·of·~w·in·<a·href="../../lib/stdlib-6.2.1/doc/html/io.html#format/2"><code·class="inline">io:format/2</code></a>.·To·quote·<a·href="../../lib/stdlib-6.2.1/doc/html/io.html#tilde_p">the·manual</a>:</p><blockquote><p>~p·Writes·the·data·with·standard·syntax·in·the·same·way·as·~w,·but·breaks·terms |
| 174 | whose·printed·representation·is·longer·than·one·line·into·many·lines·and·indents | 174 | whose·printed·representation·is·longer·than·one·line·into·many·lines·and·indents |
| 175 | each·line·sensibly.·It·also·tries·to·detect·flat·lists·of·printable·characters·and | 175 | each·line·sensibly.·It·also·tries·to·detect·flat·lists·of·printable·characters·and |
| 176 | to·output·these·as·strings</p></blockquote><h2·id="message-passing"·class="section-heading"> | 176 | to·output·these·as·strings</p></blockquote><h2·id="message-passing"·class="section-heading"> |
| 177 | ··<a·href="#message-passing"·class="hover-link"> | 177 | ··<a·href="#message-passing"·class="hover-link"> |
| 178 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 178 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 179 | ··</a> | 179 | ··</a> |
| 180 | ··<span·class="text">Message·Passing</span> | 180 | ··<span·class="text">Message·Passing</span> |
| 181 | </h2> | 181 | </h2> |
| 182 | <p>In·the·following·example·two·processes·are·created·and·they·send·messages·to | 182 | <p>In·the·following·example·two·processes·are·created·and·they·send·messages·to |
| 183 | each·other·a·number·of·times.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 183 | each·other·a·number·of·times.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="5594081788-1">(</span><span·class="ss">tut15</span><span·class="p"·data-group-id="5594081788-1">)</span><span·class="p">.</span><span·class="w"> |
| 184 | </span><span·class="w"> | 184 | </span><span·class="w"> |
| 185 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 185 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="5594081788-2">(</span><span·class="p"·data-group-id="5594081788-3">[</span><span·class="ss">start</span><span·class="p">/</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ping</span><span·class="p">/</span><sp[·...·truncated·by·diffoscope;·len:·241,·SHA:·4052fe4fe911b3c45c6f3089545dcb2df006d2d1fed08906671041ac67444c24·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 186 | </span><span·class="nf">ping</span><span·class="p"·data-group-id=" | 186 | </span><span·class="nf">ping</span><span·class="p"·data-group-id="5594081788-4">(</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pong_PID</span><span·class="p"·data-group-id="5594081788-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 187 | ····</span><span·class="n">Pong_PID</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="ss">finished</span><span·class="p">,</span><span·class="w"> | 187 | ····</span><span·class="n">Pong_PID</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="ss">finished</span><span·class="p">,</span><span·class="w"> |
| 188 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 188 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="5594081788-5">(</span><span·class="s">"ping·finished</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5594081788-6">[</span><span·class="p"·data-group-id="55940[·...·truncated·by·diffoscope;·len:·58,·SHA:·764753f50d4b665366e1f6dcd3eac2090a235e7305134e2730397def2e9f1894·...·]-5">)</span><span·class="p">;</span><span·class="w"> |
| 189 | </span><span·class="nf">ping</span><span·class="p"·data-group-id=" | 189 | </span><span·class="nf">ping</span><span·class="p"·data-group-id="5594081788-7">(</span><span·class="n">N</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pong_PID</span><span·class="p"·data-group-id="5594081788-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 190 | ····</span><span·class="n">Pong_PID</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 190 | ····</span><span·class="n">Pong_PID</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="5594081788-8">{</span><span·class="ss">ping</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="5594081788-9">(</span><span·class="p"·data-group-id="5594081788-9">)</span><span·class="p"·data-gro[·...·truncated·by·diffoscope;·len:·17,·SHA:·5f16634c61f59720660152571671b6da82594a903eb0da39e8220e62e8701b7b·...·]-8">}</span><span·class="p">,</span><span·class="w"> |
| 191 | ····</span><span·class="k">receive</span><span·class="w"> | 191 | ····</span><span·class="k">receive</span><span·class="w"> |
| 192 | ········</span><span·class="ss">pong</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 192 | ········</span><span·class="ss">pong</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 193 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 193 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="5594081788-10">(</span><span·class="s">"Ping·received·pong</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5594081788-11">[</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·66,·SHA:·dde410a685fd010c25b2af31c4be9c413f955f41355c600c1dad1c6dde1c0186·...·]-10">)</span><span·class="w"> |
| 194 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 194 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 195 | ····</span><span·class="nf">ping</span><span·class="p"·data-group-id=" | 195 | ····</span><span·class="nf">ping</span><span·class="p"·data-group-id="5594081788-12">(</span><span·class="n">N</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pong_PID</span><span·class="p"·data-group-id="55[·...·truncated·by·diffoscope;·len:·8,·SHA:·aca0c296af62af6fc17179af97b7d99ad1bdf5d673f5645b0b50d0c997088ab1·...·]-12">)</span><span·class="p">.</span><span·class="w"> |
| 196 | </span><span·class="nf">pong</span><span·class="p"·data-group-id=" | 196 | </span><span·class="nf">pong</span><span·class="p"·data-group-id="5594081788-13">(</span><span·class="p"·data-group-id="5594081788-13">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 197 | ····</span><span·class="k">receive</span><span·class="w"> | 197 | ····</span><span·class="k">receive</span><span·class="w"> |
| 198 | ········</span><span·class="ss">finished</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 198 | ········</span><span·class="ss">finished</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 199 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 199 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="5594081788-14">(</span><span·class="s">"Pong·finished</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5594081788-15">[</span><span·class="p"·data-group-id="559[·...·truncated·by·diffoscope;·len:·61,·SHA:·4d1abdc5b8ed953acdb3eaa9695d7aa1389e2a06baa03b230d64671d8b868a1b·...·]-14">)</span><span·class="p">;</span><span·class="w"> |
| 200 | ········</span><span·class="p"·data-group-id=" | 200 | ········</span><span·class="p"·data-group-id="5594081788-16">{</span><span·class="ss">ping</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ping_PID</span><span·class="p"·data-group-id="5594081788-16">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 201 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 201 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="5594081788-17">(</span><span·class="s">"Pong·received·ping</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5594081788-18">[</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·66,·SHA:·3aeb2b34fa9d9fabdcb742312bb25a0ee04145908d8f9bdb42798e80b094d91b·...·]-17">)</span><span·class="p">,</span><span·class="w"> |
| 202 | ············</span><span·class="n">Ping_PID</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="ss">pong</span><span·class="p">,</span><span·class="w"> | 202 | ············</span><span·class="n">Ping_PID</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="ss">pong</span><span·class="p">,</span><span·class="w"> |
| 203 | ············</span><span·class="nf">pong</span><span·class="p"·data-group-id=" | 203 | ············</span><span·class="nf">pong</span><span·class="p"·data-group-id="5594081788-19">(</span><span·class="p"·data-group-id="5594081788-19">)</span><span·class="w"> |
| 204 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 204 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 205 | </span><span·class="nf">start</span><span·class="p"·data-group-id=" | 205 | </span><span·class="nf">start</span><span·class="p"·data-group-id="5594081788-20">(</span><span·class="p"·data-group-id="5594081788-20">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 206 | ····</span><span·class="n">Pong_PID</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">spawn</span><span·class="p"·data-group-id=" | 206 | ····</span><span·class="n">Pong_PID</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">spawn</span><span·class="p"·data-group-id="5594081788-21">(</span><span·class="ss">tut15</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">pong</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5594081788-22">[</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·69,·SHA:·21523c79449145f885a3d95a7bc04a12bfc85d6b6d032ec87806532f0c9d9558·...·]-21">)</span><span·class="p">,</span><span·class="w"> |
| 207 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id=" | 207 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id="5594081788-23">(</span><span·class="ss">tut15</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ping</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5594081788-24">[</span><span·class="mi">3</span><[·...·truncated·by·diffoscope;·len:·462,·SHA:·2875af1933bd401e95f87c55c8f38fffb76c33949ffc8c16744e84521f5f1872·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 208 | </span><span·class="p"·data-group-id="9 | 208 | </span><span·class="p"·data-group-id="9732978846-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="ss">tut15</span><span·class="p"·data-group-id="9732978846-2">}</span><span·class="gp·unselectable"> |
| 209 | 2>·</span><span·class="nc">tut15</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">start</span><span·class="p"·data-group-id="9 | 209 | 2>·</span><span·class="nc">tut15</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">start</span><span·class="p"·data-group-id="9732978846-3">(</span><span·class="p"·data-group-id="9732978846-3">)</span><span·class="p">.</span><span·class="w"> |
| 210 | </span><span·class="o"><</span><span·class="mf">0.36</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w"> | 210 | </span><span·class="o"><</span><span·class="mf">0.36</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w"> |
| 211 | </span><span·class="n">Pong</span><span·class="w">·</span><span·class="ss">received</span><span·class="w">·</span><span·class="ss">ping</span><span·class="w"> | 211 | </span><span·class="n">Pong</span><span·class="w">·</span><span·class="ss">received</span><span·class="w">·</span><span·class="ss">ping</span><span·class="w"> |
| 212 | </span><span·class="n">Ping</span><span·class="w">·</span><span·class="ss">received</span><span·class="w">·</span><span·class="ss">pong</span><span·class="w"> | 212 | </span><span·class="n">Ping</span><span·class="w">·</span><span·class="ss">received</span><span·class="w">·</span><span·class="ss">pong</span><span·class="w"> |
| 213 | </span><span·class="n">Pong</span><span·class="w">·</span><span·class="ss">received</span><span·class="w">·</span><span·class="ss">ping</span><span·class="w"> | 213 | </span><span·class="n">Pong</span><span·class="w">·</span><span·class="ss">received</span><span·class="w">·</span><span·class="ss">ping</span><span·class="w"> |
| 214 | </span><span·class="n">Ping</span><span·class="w">·</span><span·class="ss">received</span><span·class="w">·</span><span·class="ss">pong</span><span·class="w"> | 214 | </span><span·class="n">Ping</span><span·class="w">·</span><span·class="ss">received</span><span·class="w">·</span><span·class="ss">pong</span><span·class="w"> |
| 215 | </span><span·class="n">Pong</span><span·class="w">·</span><span·class="ss">received</span><span·class="w">·</span><span·class="ss">ping</span><span·class="w"> | 215 | </span><span·class="n">Pong</span><span·class="w">·</span><span·class="ss">received</span><span·class="w">·</span><span·class="ss">ping</span><span·class="w"> |
| 216 | </span><span·class="n">Ping</span><span·class="w">·</span><span·class="ss">received</span><span·class="w">·</span><span·class="ss">pong</span><span·class="w"> | 216 | </span><span·class="n">Ping</span><span·class="w">·</span><span·class="ss">received</span><span·class="w">·</span><span·class="ss">pong</span><span·class="w"> |
| 217 | </span><span·class="ss">ping</span><span·class="w">·</span><span·class="ss">finished</span><span·class="w"> | 217 | </span><span·class="ss">ping</span><span·class="w">·</span><span·class="ss">finished</span><span·class="w"> |
| 218 | </span><span·class="n">Pong</span><span·class="w">·</span><span·class="ss">finished</span></code></pre><p>The·function·<code·class="inline">start</code>·first·creates·a·process,·let·us·call·it·"pong":</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Pong_PID</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">spawn</span><span·class="p"·data-group-id="73 | 218 | </span><span·class="n">Pong</span><span·class="w">·</span><span·class="ss">finished</span></code></pre><p>The·function·<code·class="inline">start</code>·first·creates·a·process,·let·us·call·it·"pong":</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Pong_PID</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">spawn</span><span·class="p"·data-group-id="6732128922-1">(</span><span·class="ss">tut15</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">pong</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6732128922-2">[</span><span·class="p"·data-group-i[·...·truncated·by·diffoscope;·len:·66,·SHA:·3f32b2e71c5dca0cab51378a2738a19a9c9275c2b36ac2dd96d05327942f4817·...·]-1">)</span></code></pre><p>This·process·executes·<code·class="inline">tut15:pong()</code>.·<code·class="inline">Pong_PID</code>·is·the·process·identity·of·the |
| 219 | "pong"·process.·The·function·<code·class="inline">start</code>·now·creates·another·process·"ping":</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">spawn</span><span·class="p"·data-group-id="6 | 219 | "pong"·process.·The·function·<code·class="inline">start</code>·now·creates·another·process·"ping":</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">spawn</span><span·class="p"·data-group-id="6839670081-1">(</span><span·class="ss">tut15</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ping</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6839670081-2">[</span><span·class="mi">3</span><spa[·...·truncated·by·diffoscope;·len:·574,·SHA:·43821f6d3efa4365d99e19ea631f5d29fb7a337e6cd3999f2f87f592141b1441·...·]-1">)</span></code></pre><p><code·class="inline"><0.36.0></code>·is·the·return·value·from·the·<code·class="inline">start</code>·function.</p><p>The·process·"pong"·now·does:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">receive</span><span·class="w"> |
| 220 | ····</span><span·class="ss">finished</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 220 | ····</span><span·class="ss">finished</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 221 | ········</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 221 | ········</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="6240112426-1">(</span><span·class="s">"Pong·finished</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6240112426-2">[</span><span·class="p"·data-group-id="62401[·...·truncated·by·diffoscope;·len:·58,·SHA:·fb0f6bc1bff0b68741640d2c9df2fb1aa67edc46b3de69d8f7a58a12fae8579d·...·]-1">)</span><span·class="p">;</span><span·class="w"> |
| 222 | ····</span><span·class="p"·data-group-id=" | 222 | ····</span><span·class="p"·data-group-id="6240112426-3">{</span><span·class="ss">ping</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ping_PID</span><span·class="p"·data-group-id="6240112426-3">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 223 | ········</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 223 | ········</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="6240112426-4">(</span><span·class="s">"Pong·received·ping</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6240112426-5">[</span><span·class="p"·data-group-id="[·...·truncated·by·diffoscope;·len:·63,·SHA:·e76f06d3d0bd02ab15d1fcac0c764d641429b6bcdaceb643738b54a2b8b9b584·...·]-4">)</span><span·class="p">,</span><span·class="w"> |
| 224 | ········</span><span·class="n">Ping_PID</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="ss">pong</span><span·class="p">,</span><span·class="w"> | 224 | ········</span><span·class="n">Ping_PID</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="ss">pong</span><span·class="p">,</span><span·class="w"> |
| 225 | ········</span><span·class="nf">pong</span><span·class="p"·data-group-id=" | 225 | ········</span><span·class="nf">pong</span><span·class="p"·data-group-id="6240112426-6">(</span><span·class="p"·data-group-id="6240112426-6">)</span><span·class="w"> |
| 226 | </span><span·class="k">end</span><span·class="p">.</span></code></pre><p>The·<code·class="inline">receive</code>·construct·is·used·to·allow·processes·to·wait·for·messages·from | 226 | </span><span·class="k">end</span><span·class="p">.</span></code></pre><p>The·<code·class="inline">receive</code>·construct·is·used·to·allow·processes·to·wait·for·messages·from |
| 227 | other·processes.·It·has·the·following·format:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">receive</span><span·class="w"> | 227 | other·processes.·It·has·the·following·format:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">receive</span><span·class="w"> |
| 228 | ···</span><span·class="ss">pattern1</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 228 | ···</span><span·class="ss">pattern1</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 229 | ·······</span><span·class="ss">actions1</span><span·class="p">;</span><span·class="w"> | 229 | ·······</span><span·class="ss">actions1</span><span·class="p">;</span><span·class="w"> |
| 230 | ···</span><span·class="ss">pattern2</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 230 | ···</span><span·class="ss">pattern2</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 231 | ·······</span><span·class="ss">actions2</span><span·class="p">;</span><span·class="w"> | 231 | ·······</span><span·class="ss">actions2</span><span·class="p">;</span><span·class="w"> |
| 232 | ···</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 232 | ···</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| Offset 253, 84 lines modified | Offset 253, 84 lines modified | ||
| 253 | queue·(keeping·the·first·message·and·any·other·messages·in·the·queue).·If·the | 253 | queue·(keeping·the·first·message·and·any·other·messages·in·the·queue).·If·the |
| 254 | second·message·does·not·match,·the·third·message·is·tried,·and·so·on,·until·the | 254 | second·message·does·not·match,·the·third·message·is·tried,·and·so·on,·until·the |
| 255 | end·of·the·queue·is·reached.·If·the·end·of·the·queue·is·reached,·the·process | 255 | end·of·the·queue·is·reached.·If·the·end·of·the·queue·is·reached,·the·process |
| 256 | blocks·(stops·execution)·and·waits·until·a·new·message·is·received·and·this | 256 | blocks·(stops·execution)·and·waits·until·a·new·message·is·received·and·this |
| 257 | procedure·is·repeated.</p><p>The·Erlang·implementation·is·"clever"·and·minimizes·the·number·of·times·each | 257 | procedure·is·repeated.</p><p>The·Erlang·implementation·is·"clever"·and·minimizes·the·number·of·times·each |
| 258 | message·is·tested·against·the·patterns·in·each·<code·class="inline">receive</code>.</p><p>Now·back·to·the·ping·pong·example.</p><p>"Pong"·is·waiting·for·messages.·If·the·atom·<code·class="inline">finished</code>·is·received,·"pong" | 258 | message·is·tested·against·the·patterns·in·each·<code·class="inline">receive</code>.</p><p>Now·back·to·the·ping·pong·example.</p><p>"Pong"·is·waiting·for·messages.·If·the·atom·<code·class="inline">finished</code>·is·received,·"pong" |
| 259 | writes·"Pong·finished"·to·the·output·and,·as·it·has·nothing·more·to·do, | 259 | writes·"Pong·finished"·to·the·output·and,·as·it·has·nothing·more·to·do, |
| 260 | terminates.·If·it·receives·a·message·with·the·format:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 260 | terminates.·If·it·receives·a·message·with·the·format:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="2019693806-1">{</span><span·class="ss">ping</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ping_PID</span><span·class="p"·data-group-id="2019693806-1">}</span></code></pre><p>it·writes·"Pong·received·ping"·to·the·output·and·sends·the·atom·<code·class="inline">pong</code>·to·the |
| 261 | process·"ping":</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Ping_PID</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="ss">pong</span></code></pre><p>Notice·how·the·operator·"!"·is·used·to·send·messages.·The·syntax·of·"!"·is:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Pid</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="n">Message</span></code></pre><p>That·is,·<code·class="inline">Message</code>·(any·Erlang·term)·is·sent·to·the·process·with·identity·<code·class="inline">Pid</code>.</p><p>After·sending·the·message·<code·class="inline">pong</code>·to·the·process·"ping",·"pong"·calls·the·<code·class="inline">pong</code> | 261 | process·"ping":</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Ping_PID</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="ss">pong</span></code></pre><p>Notice·how·the·operator·"!"·is·used·to·send·messages.·The·syntax·of·"!"·is:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Pid</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="n">Message</span></code></pre><p>That·is,·<code·class="inline">Message</code>·(any·Erlang·term)·is·sent·to·the·process·with·identity·<code·class="inline">Pid</code>.</p><p>After·sending·the·message·<code·class="inline">pong</code>·to·the·process·"ping",·"pong"·calls·the·<code·class="inline">pong</code> |
| 262 | function·again,·which·causes·it·to·get·back·to·the·<code·class="inline">receive</code>·again·and·wait·for | 262 | function·again,·which·causes·it·to·get·back·to·the·<code·class="inline">receive</code>·again·and·wait·for |
| 263 | another·message.</p><p>Now·let·us·look·at·the·process·"ping".·Recall·that·it·was·started·by·executing:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">tut15</span><span·class="p">:</span><span·class="nf">ping</span><span·class="p"·data-group-id=" | 263 | another·message.</p><p>Now·let·us·look·at·the·process·"ping".·Recall·that·it·was·started·by·executing:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">tut15</span><span·class="p">:</span><span·class="nf">ping</span><span·class="p"·data-group-id="1506198690-1">(</span><span·class="mi">3</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pong_PID</span><span·class="p"·data-group-id="1506198690-1">)</span></code></pre><p>Looking·at·the·function·<code·class="inline">ping/2</code>,·the·second·clause·of·<code·class="inline">ping/2</code>·is·executed |
| 264 | since·the·value·of·the·first·argument·is·3·(not·0)·(first·clause·head·is | 264 | since·the·value·of·the·first·argument·is·3·(not·0)·(first·clause·head·is |
| 265 | <code·class="inline">ping(0,Pong_PID)</code>,·second·clause·head·is·<code·class="inline">ping(N,Pong_PID)</code>,·so·<code·class="inline">N</code>·becomes·3).</p><p>The·second·clause·sends·a·message·to·"pong":</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Pong_PID</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="6 | 265 | <code·class="inline">ping(0,Pong_PID)</code>,·second·clause·head·is·<code·class="inline">ping(N,Pong_PID)</code>,·so·<code·class="inline">N</code>·becomes·3).</p><p>The·second·clause·sends·a·message·to·"pong":</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Pong_PID</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="6735486046-1">{</span><span·class="ss">ping</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="6735486046-2">(</span><span·class="p"·data-group-id="6735486046-2">)</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·16,·SHA:·c257529dba9090212eccde589bb2b8e1ceb02e31facf876a19f95f5b681ca922·...·]-1">}</span><span·class="p">,</span></code></pre><p><a·href="../../erts-15.2.3/doc/html/erlang.html#self/0"><code·class="inline">self/0</code></a>·returns·the·pid·of·the·process·that·executes·<a·href="../../erts-15.2.3/doc/html/erlang.html#self/0"><code·class="inline">self/0</code></a>,·in·this·case·the |
| 266 | pid·of·"ping".·(Recall·the·code·for·"pong",·this·lands·up·in·the·variable | 266 | pid·of·"ping".·(Recall·the·code·for·"pong",·this·lands·up·in·the·variable |
| 267 | <code·class="inline">Ping_PID</code>·in·the·<code·class="inline">receive</code>·previously·explained.)</p><p>"Ping"·now·waits·for·a·reply·from·"pong":</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">receive</span><span·class="w"> | 267 | <code·class="inline">Ping_PID</code>·in·the·<code·class="inline">receive</code>·previously·explained.)</p><p>"Ping"·now·waits·for·a·reply·from·"pong":</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">receive</span><span·class="w"> |
| 268 | ····</span><span·class="ss">pong</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 268 | ····</span><span·class="ss">pong</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 269 | ········</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 269 | ········</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="8148251785-1">(</span><span·class="s">"Ping·received·pong</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8148251785-2">[</span><span·class="p"·data-group-id="[·...·truncated·by·diffoscope;·len:·63,·SHA:·2acb914fdcddec0c2b0565543c1884580f1a4c056dbe9bff19f5e848d44a6a61·...·]-1">)</span><span·class="w"> |
| 270 | </span><span·class="k">end</span><span·class="p">,</span></code></pre><p>It·writes·"Ping·received·pong"·when·this·reply·arrives,·after·which·"ping"·calls | 270 | </span><span·class="k">end</span><span·class="p">,</span></code></pre><p>It·writes·"Ping·received·pong"·when·this·reply·arrives,·after·which·"ping"·calls |
| 271 | the·<code·class="inline">ping</code>·function·again.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">ping</span><span·class="p"·data-group-id="8 | 271 | the·<code·class="inline">ping</code>·function·again.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">ping</span><span·class="p"·data-group-id="8646416562-1">(</span><span·class="n">N</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pong_PID</span><span·class="p"·data-group-id="8646[·...·truncated·by·diffoscope;·len:·6,·SHA:·7b5010246868786afdc4192bc3a982c99ffebb2868a69e626e67631c159c14b8·...·]-1">)</span></code></pre><p><code·class="inline">N-1</code>·causes·the·first·argument·to·be·decremented·until·it·becomes·0.·When·this |
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| 138 | ··<span·class="text">Creating·a·Target·System</span> | 138 | ··<span·class="text">Creating·a·Target·System</span> |
| 139 | </h2> | 139 | </h2> |
| 140 | <p>It·is·assumed·that·you·have·a·working·Erlang/OTP·system·structured·according·to | 140 | <p>It·is·assumed·that·you·have·a·working·Erlang/OTP·system·structured·according·to |
| 141 | the·OTP·design·principles.</p><p><em>Step·1.</em>·Create·a·<code·class="inline">.rel</code>·file·(see·the·<a·href="../../lib/sasl-4.2.2/doc/html/rel.html">rel(4)</a>·manual·page·in | 141 | the·OTP·design·principles.</p><p><em>Step·1.</em>·Create·a·<code·class="inline">.rel</code>·file·(see·the·<a·href="../../lib/sasl-4.2.2/doc/html/rel.html">rel(4)</a>·manual·page·in |
| 142 | SASL),·which·specifies·the·ERTS·version·and·lists·all·applications·that·are·to | 142 | SASL),·which·specifies·the·ERTS·version·and·lists·all·applications·that·are·to |
| 143 | be·included·in·the·new·basic·target·system.·An·example·is·the·following | 143 | be·included·in·the·new·basic·target·system.·An·example·is·the·following |
| 144 | <code·class="inline">mysystem.rel</code>·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·mysystem.rel</span><span·class="w"> | 144 | <code·class="inline">mysystem.rel</code>·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·mysystem.rel</span><span·class="w"> |
| 145 | </span><span·class="p"·data-group-id=" | 145 | </span><span·class="p"·data-group-id="9002833791-1">{</span><span·class="ss">release</span><span·class="p">,</span><span·class="w"> |
| 146 | ·</span><span·class="p"·data-group-id=" | 146 | ·</span><span·class="p"·data-group-id="9002833791-2">{</span><span·class="s">"MYSYSTEM"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"FIRST"</span><span·class="p"·data-group-id="9002833791-2">}</span><span·class="p">,</span><span·class="w"> |
| 147 | ·</span><span·class="p"·data-group-id=" | 147 | ·</span><span·class="p"·data-group-id="9002833791-3">{</span><span·class="ss">erts</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"5.10.4"</span><span·class="p"·data-group-id="9002833791-3">}</span><span·class="p">,</span><span·class="w"> |
| 148 | ·</span><span·class="p"·data-group-id=" | 148 | ·</span><span·class="p"·data-group-id="9002833791-4">[</span><span·class="p"·data-group-id="9002833791-5">{</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"2.16.4"</span><span·class="p"·data-group-id="9002833791-5">}</span><span·class="p">,</span><span·class="w"> |
| 149 | ··</span><span·class="p"·data-group-id=" | 149 | ··</span><span·class="p"·data-group-id="9002833791-6">{</span><span·class="ss">stdlib</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"1.19.4"</span><span·class="p"·data-group-id="9002833791-6">}</span><span·class="p">,</span><span·class="w"> |
| 150 | ··</span><span·class="p"·data-group-id=" | 150 | ··</span><span·class="p"·data-group-id="9002833791-7">{</span><span·class="ss">sasl</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"2.3.4"</span><span·class="p"·data-group-id="9002833791-7">}</span><span·class="p">,</span><span·class="w"> |
| 151 | ··</span><span·class="p"·data-group-id=" | 151 | ··</span><span·class="p"·data-group-id="9002833791-8">{</span><span·class="ss">pea</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"1.0"</span><span·class="p"·data-group-id="9002833791-8">}</span><span·class="p"·data-group-id="9002833791-4">]</span><span·class="p"[·...·truncated·by·diffoscope;·len:·26,·SHA:·5e3ed1277b8e2d58dd066bc137aaaa04ce1a82df9afdab440d35f8743129c529·...·]-1">}</span><span·class="p">.</span></code></pre><p>The·listed·applications·are·not·only·original·Erlang/OTP·applications·but |
| 152 | possibly·also·new·applications·that·you·have·written·(here·exemplified·by·the | 152 | possibly·also·new·applications·that·you·have·written·(here·exemplified·by·the |
| 153 | application·Pea·(<code·class="inline">pea</code>)).</p><p><em>Step·2.</em>·Start·Erlang/OTP·from·the·directory·where·the·<code·class="inline">mysystem.rel</code>·file | 153 | application·Pea·(<code·class="inline">pea</code>)).</p><p><em>Step·2.</em>·Start·Erlang/OTP·from·the·directory·where·the·<code·class="inline">mysystem.rel</code>·file |
| 154 | resides:</p><pre><code·class="text">%·erl·-pa·/home/user/target_system/myapps/pea-1.0/ebin</code></pre><p>The·<code·class="inline">-pa</code>·argument·prepends·the·path·to·the·<code·class="inline">ebin</code>·directory·for | 154 | resides:</p><pre><code·class="text">%·erl·-pa·/home/user/target_system/myapps/pea-1.0/ebin</code></pre><p>The·<code·class="inline">-pa</code>·argument·prepends·the·path·to·the·<code·class="inline">ebin</code>·directory·for |
| 155 | the·Pea·application·to·the·code·path.</p><p><em>Step·3.</em>·Create·the·target·system:</p><pre><code·class="text">1>·target_system:create("mysystem").</code></pre><p>The·function·<code·class="inline">target_system:create/1</code>·performs·the·following:</p><ol><li><p>Reads·the·file·<code·class="inline">mysystem.rel</code>·and·creates·a·new·file·<code·class="inline">plain.rel</code>. | 155 | the·Pea·application·to·the·code·path.</p><p><em>Step·3.</em>·Create·the·target·system:</p><pre><code·class="text">1>·target_system:create("mysystem").</code></pre><p>The·function·<code·class="inline">target_system:create/1</code>·performs·the·following:</p><ol><li><p>Reads·the·file·<code·class="inline">mysystem.rel</code>·and·creates·a·new·file·<code·class="inline">plain.rel</code>. |
| 156 | The·new·file·is·identical·to·the·original,·except·that·it·only | 156 | The·new·file·is·identical·to·the·original,·except·that·it·only |
| 157 | lists·the·Kernel·and·STDLIB·applications.</p></li><li><p>From·the·files·<code·class="inline">mysystem.rel</code>·and·<code·class="inline">plain.rel</code>·creates·the·files | 157 | lists·the·Kernel·and·STDLIB·applications.</p></li><li><p>From·the·files·<code·class="inline">mysystem.rel</code>·and·<code·class="inline">plain.rel</code>·creates·the·files |
| 158 | <code·class="inline">mysystem.script</code>,·<code·class="inline">mysystem.boot</code>,·<code·class="inline">plain.script</code>,·and·<code·class="inline">plain.boot</code> | 158 | <code·class="inline">mysystem.script</code>,·<code·class="inline">mysystem.boot</code>,·<code·class="inline">plain.script</code>,·and·<code·class="inline">plain.boot</code> |
| Offset 242, 25 lines modified | Offset 242, 25 lines modified | ||
| 242 | ··<a·href="#creating-the-next-version"·class="hover-link"> | 242 | ··<a·href="#creating-the-next-version"·class="hover-link"> |
| 243 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 243 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 244 | ··</a> | 244 | ··</a> |
| 245 | ··<span·class="text">Creating·the·Next·Version</span> | 245 | ··<span·class="text">Creating·the·Next·Version</span> |
| 246 | </h2> | 246 | </h2> |
| 247 | <p>In·this·example·the·Pea·application·has·been·changed,·and·so·are·the | 247 | <p>In·this·example·the·Pea·application·has·been·changed,·and·so·are·the |
| 248 | applications·ERTS,·Kernel,·STDLIB·and·SASL.</p><p><em>Step·1.</em>·Create·the·file·<code·class="inline">.rel</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·mysystem2.rel</span><span·class="w"> | 248 | applications·ERTS,·Kernel,·STDLIB·and·SASL.</p><p><em>Step·1.</em>·Create·the·file·<code·class="inline">.rel</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·mysystem2.rel</span><span·class="w"> |
| 249 | </span><span·class="p"·data-group-id=" | 249 | </span><span·class="p"·data-group-id="1750482775-1">{</span><span·class="ss">release</span><span·class="p">,</span><span·class="w"> |
| 250 | ·</span><span·class="p"·data-group-id=" | 250 | ·</span><span·class="p"·data-group-id="1750482775-2">{</span><span·class="s">"MYSYSTEM"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"SECOND"</span><span·class="p"·data-group-id="1750482775-2">}</span><span·class="p">,</span><span·class="w"> |
| 251 | ·</span><span·class="p"·data-group-id=" | 251 | ·</span><span·class="p"·data-group-id="1750482775-3">{</span><span·class="ss">erts</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"6.0"</span><span·class="p"·data-group-id="1750482775-3">}</span><span·class="p">,</span><span·class="w"> |
| 252 | ·</span><span·class="p"·data-group-id=" | 252 | ·</span><span·class="p"·data-group-id="1750482775-4">[</span><span·class="p"·data-group-id="1750482775-5">{</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"3.0"</span><span·class="p"·data-group-id="1750482775-5">}</span><span·class="p">,</span><span·class="w"> |
| 253 | ··</span><span·class="p"·data-group-id=" | 253 | ··</span><span·class="p"·data-group-id="1750482775-6">{</span><span·class="ss">stdlib</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"2.0"</span><span·class="p"·data-group-id="1750482775-6">}</span><span·class="p">,</span><span·class="w"> |
| 254 | ··</span><span·class="p"·data-group-id=" | 254 | ··</span><span·class="p"·data-group-id="1750482775-7">{</span><span·class="ss">sasl</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"2.4"</span><span·class="p"·data-group-id="1750482775-7">}</span><span·class="p">,</span><span·class="w"> |
| 255 | ··</span><span·class="p"·data-group-id=" | 255 | ··</span><span·class="p"·data-group-id="1750482775-8">{</span><span·class="ss">pea</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"2.0"</span><span·class="p"·data-group-id="1750482775-8">}</span><span·class="p"·data-group-id="1750482775-4">]</span><span·class="p"[·...·truncated·by·diffoscope;·len:·26,·SHA:·d498a6edf91b83d1f832843512f2c585f1c092b1aa0e7edb4ac62d7887e07193·...·]-1">}</span><span·class="p">.</span></code></pre><p><em>Step·2.</em>·Create·the·application·upgrade·file·(see |
| 256 | <a·href="../../lib/sasl-4.2.2/doc/html/appup.html">appup</a>·in·SASL)·for·Pea,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·pea.appup</span><span·class="w"> | 256 | <a·href="../../lib/sasl-4.2.2/doc/html/appup.html">appup</a>·in·SASL)·for·Pea,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·pea.appup</span><span·class="w"> |
| 257 | </span><span·class="p"·data-group-id="8 | 257 | </span><span·class="p"·data-group-id="5833921059-1">{</span><span·class="s">"2.0"</span><span·class="p">,</span><span·class="w"> |
| 258 | ·</span><span·class="p"·data-group-id="8 | 258 | ·</span><span·class="p"·data-group-id="5833921059-2">[</span><span·class="p"·data-group-id="5833921059-3">{</span><span·class="s">"1.0"</span><span·class="p">,</span><span·class="p"·data-group-id="5833921059-4">[</span><span·class="p"·data-group-id="5833921059-5">{</span><span·class="[·...·truncated·by·diffoscope;·len:·277,·SHA:·84a1b5879ae783b47750abce5ad6c79a796563cb12415d94e1ce1b988cd8a6c3·...·]-2">]</span><span·class="p">,</span><span·class="w"> |
| 259 | ·</span><span·class="p"·data-group-id="8 | 259 | ·</span><span·class="p"·data-group-id="5833921059-6">[</span><span·class="p"·data-group-id="5833921059-7">{</span><span·class="s">"1.0"</span><span·class="p">,</span><span·class="p"·data-group-id="5833921059-8">[</span><span·class="p"·data-group-id="5833921059-9">{</span><span·class="[·...·truncated·by·diffoscope;·len:·330,·SHA:·3b41f6dfbbee0770f8f95b168fddcc03dd664737bac0962a962da3b85c948075·...·]-1">}</span><span·class="p">.</span></code></pre><p><em>Step·3.</em>·From·the·directory·where·the·file·<code·class="inline">mysystem2.rel</code>·resides,·start·the |
| 260 | Erlang/OTP·system,·giving·the·path·to·the·new·version·of·Pea:</p><pre><code·class="text">%·erl·-pa·/home/user/target_system/myapps/pea-2.0/ebin</code></pre><p><em>Step·4.</em>·Create·the·release·upgrade·file·(see·<a·href="../../lib/sasl-4.2.2/doc/html/relup.html">relup</a> | 260 | Erlang/OTP·system,·giving·the·path·to·the·new·version·of·Pea:</p><pre><code·class="text">%·erl·-pa·/home/user/target_system/myapps/pea-2.0/ebin</code></pre><p><em>Step·4.</em>·Create·the·release·upgrade·file·(see·<a·href="../../lib/sasl-4.2.2/doc/html/relup.html">relup</a> |
| 261 | in·SASL):</p><pre><code·class="text">1>·systools:make_relup("mysystem2",["mysystem"],["mysystem"], | 261 | in·SASL):</p><pre><code·class="text">1>·systools:make_relup("mysystem2",["mysystem"],["mysystem"], |
| 262 | ····[{path,["/home/user/target_system/myapps/pea-1.0/ebin", | 262 | ····[{path,["/home/user/target_system/myapps/pea-1.0/ebin", |
| 263 | ····"/my/old/erlang/lib/*/ebin"]}]).</code></pre><p>Here·<code·class="inline">"mysystem"</code>·is·the·base·release·and·<code·class="inline">"mysystem2"</code>·is·the·release·to | 263 | ····"/my/old/erlang/lib/*/ebin"]}]).</code></pre><p>Here·<code·class="inline">"mysystem"</code>·is·the·base·release·and·<code·class="inline">"mysystem2"</code>·is·the·release·to |
| 264 | upgrade·to.</p><p>The·<code·class="inline">path</code>·option·is·used·for·pointing·out·the·old·version·of·all·applications. | 264 | upgrade·to.</p><p>The·<code·class="inline">path</code>·option·is·used·for·pointing·out·the·old·version·of·all·applications. |
| 265 | (The·new·versions·are·already·in·the·code·path·-·assuming·of·course·that·the | 265 | (The·new·versions·are·already·in·the·code·path·-·assuming·of·course·that·the |
| 266 | Erlang·node·on·which·this·is·executed·is·running·the·correct·version·of | 266 | Erlang·node·on·which·this·is·executed·is·running·the·correct·version·of |
| Offset 292, 21 lines modified | Offset 292, 21 lines modified | ||
| 292 | {continue_after_restart,"FIRST",[]} | 292 | {continue_after_restart,"FIRST",[]} |
| 293 | heart:·Tue·Apr··1·12:15:10·2014:·Erlang·has·closed. | 293 | heart:·Tue·Apr··1·12:15:10·2014:·Erlang·has·closed. |
| 294 | heart:·Tue·Apr··1·12:15:11·2014:·Executed·"/usr/local/erl-target/bin/start·/usr/local/erl-target/releases/new_start_erl.data"·->·0.·Terminating. | 294 | heart:·Tue·Apr··1·12:15:11·2014:·Executed·"/usr/local/erl-target/bin/start·/usr/local/erl-target/releases/new_start_erl.data"·->·0.·Terminating. |
| 295 | [End]</code></pre><p>The·above·return·value·and·output·after·the·call·to | 295 | [End]</code></pre><p>The·above·return·value·and·output·after·the·call·to |
| 296 | <a·href="../../lib/sasl-4.2.2/doc/html/release_handler.html#install_release/1"><code·class="inline">release_handler:install_release/1</code></a>·means·that·the·<code·class="inline">release_handler</code>·has | 296 | <a·href="../../lib/sasl-4.2.2/doc/html/release_handler.html#install_release/1"><code·class="inline">release_handler:install_release/1</code></a>·means·that·the·<code·class="inline">release_handler</code>·has |
| 297 | restarted·the·node·by·using·<code·class="inline">heart</code>.·This·is·always·done·when·the·upgrade | 297 | restarted·the·node·by·using·<code·class="inline">heart</code>.·This·is·always·done·when·the·upgrade |
| 298 | involves·a·change·of·the·applications·ERTS,·Kernel,·STDLIB,·or·SASL.·For·more | 298 | involves·a·change·of·the·applications·ERTS,·Kernel,·STDLIB,·or·SASL.·For·more |
| 299 | information,·see·<a·href="upgrade.html">Upgrade·when·Erlang/OTP·has·Changed</a>.</p><p>The·node·is·accessible·through·a·new·pipe:</p><pre><code·class="text">%·/usr/local/erl-target/bin/to_erl·/tmp/erlang.pipe.2</code></pre><p>List·the·available·releases·in·the·system:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">release_handler</span><span·class="p">:</span><span·class="nf">which_releases</span><span·class="p"·data-group-id=" | 299 | information,·see·<a·href="upgrade.html">Upgrade·when·Erlang/OTP·has·Changed</a>.</p><p>The·node·is·accessible·through·a·new·pipe:</p><pre><code·class="text">%·/usr/local/erl-target/bin/to_erl·/tmp/erlang.pipe.2</code></pre><p>List·the·available·releases·in·the·system:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">release_handler</span><span·class="p">:</span><span·class="nf">which_releases</span><span·class="p"·data-group-id="1469048181-1">(</span><span·class="p"·data-group-id="1469048181-1">)</span><span·class="p">.</span><span·class="w"> |
| 300 | </span><span·class="p"·data-group-id=" | 300 | </span><span·class="p"·data-group-id="1469048181-2">[</span><span·class="p"·data-group-id="1469048181-3">{</span><span·class="s">"MYSYSTEM"</span><span·class="p">,</span><span·class="s">"SECOND"</span><span·class="p">,</span><span·class="w"> |
| 301 | ··</span><span·class="p"·data-group-id=" | 301 | ··</span><span·class="p"·data-group-id="1469048181-4">[</span><span·class="s">"kernel-3.0"</span><span·class="p">,</span><span·class="s">"stdlib-2.0"</span><span·class="p">,</span><span·class="s">"sasl-2.4"</span><span·class="p">,</span><span·class="s">"pea-2.0[·...·truncated·by·diffoscope;·len:·54,·SHA:·d1681dc089f4c54dfbb0cb64886d6aa25a1279d4750b128efbd0605c06c64572·...·]-4">]</span><span·class="p">,</span><span·class="w"> |
| 302 | ··</span><span·class="ss">current</span><span·class="p"·data-group-id=" | 302 | ··</span><span·class="ss">current</span><span·class="p"·data-group-id="1469048181-3">}</span><span·class="p">,</span><span·class="w"> |
| 303 | ·</span><span·class="p"·data-group-id=" | 303 | ·</span><span·class="p"·data-group-id="1469048181-5">{</span><span·class="s">"MYSYSTEM"</span><span·class="p">,</span><span·class="s">"FIRST"</span><span·class="p">,</span><span·class="w"> |
| 304 | ··</span><span·class="p"·data-group-id=" | 304 | ··</span><span·class="p"·data-group-id="1469048181-6">[</span><span·class="s">"kernel-2.16.4"</span><span·class="p">,</span><span·class="s">"stdlib-1.19.4"</span><span·class="p">,</span><span·class="s">"sasl-2.3.4"</span><span·class="p">,</span><span·class="s">"[·...·truncated·by·diffoscope;·len:·62,·SHA:·1038919afaa5175db390b029ed3ad1c9a17d59513b33daa3fec668d4113cfa06·...·]-6">]</span><span·class="p">,</span><span·class="w"> |
| 305 | ··</span><span·class="ss">permanent</span><span·class="p"·data-group-id=" | 305 | ··</span><span·class="ss">permanent</span><span·class="p"·data-group-id="1469048181-5">}</span><span·class="p"·data-group-id="1469048181-2">]</span></code></pre><p>Our·new·release,·"SECOND",·is·now·the·current·release,·but·we·can·also·see·that |
| 306 | our·"FIRST"·release·is·still·permanent.·This·means·that·if·the·node·would·be | 306 | our·"FIRST"·release·is·still·permanent.·This·means·that·if·the·node·would·be |
| 307 | restarted·now,·it·would·come·up·running·the·"FIRST"·release·again.</p><p><em>Step·3.</em>·Make·the·new·release·permanent:</p><pre><code·class="text">2>·release_handler:make_permanent("SECOND").</code></pre><p>Check·the·releases·again:</p><pre><code·class="c">3>·release_handler:which_releases(). | 307 | restarted·now,·it·would·come·up·running·the·"FIRST"·release·again.</p><p><em>Step·3.</em>·Make·the·new·release·permanent:</p><pre><code·class="text">2>·release_handler:make_permanent("SECOND").</code></pre><p>Check·the·releases·again:</p><pre><code·class="c">3>·release_handler:which_releases(). |
| 308 | [{"MYSYSTEM","SECOND", | 308 | [{"MYSYSTEM","SECOND", |
| 309 | ··["kernel-3.0","stdlib-2.0","sasl-2.4","pea-2.0"], | 309 | ··["kernel-3.0","stdlib-2.0","sasl-2.4","pea-2.0"], |
| 310 | ··permanent}, | 310 | ··permanent}, |
| 311 | ·{"MYSYSTEM","FIRST", | 311 | ·{"MYSYSTEM","FIRST", |
| 312 | ··["kernel-2.16.4","stdlib-1.19.4","sasl-2.3.4","pea-1.0"], | 312 | ··["kernel-2.16.4","stdlib-1.19.4","sasl-2.3.4","pea-1.0"], |
| Offset 315, 268 lines modified | Offset 315, 268 lines modified | ||
| 315 | ··<a·href="#listing-of-target_system-erl"·class="hover-link"> | 315 | ··<a·href="#listing-of-target_system-erl"·class="hover-link"> |
| 316 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 316 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 317 | ··</a> | 317 | ··</a> |
| 318 | ··<span·class="text">Listing·of·target_system.erl</span> | 318 | ··<span·class="text">Listing·of·target_system.erl</span> |
| 319 | </h2> | 319 | </h2> |
| 320 | <p>This·module·can·also·be·found·in·the·<code·class="inline">examples</code>·directory·of·the·SASL | 320 | <p>This·module·can·also·be·found·in·the·<code·class="inline">examples</code>·directory·of·the·SASL |
| 321 | application.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w"> | 321 | application.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w"> |
| 322 | </span><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 322 | </span><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="6728893661-1">(</span><span·class="ss">target_system</span><span·class="p"·data-group-id="6728893661-1">)</span><span·class="p">.</span><span·class="w"> |
| 323 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 323 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="6728893661-2">(</span><span·class="p"·data-group-id="6728893661-3">[</span><span·class="ss">create</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">create</span><span·class="p">/</span>[·...·truncated·by·diffoscope;·len:·247,·SHA:·531281e295a6d6b04be2cf436f10346c9178a9c2c87bb1d5a4589252bb6d80b3·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 324 | </span><span·class="c1">%%·Note:·RelFileName·below·is·the·*stem*·without·trailing·.rel,</span><span·class="w"> | 324 | </span><span·class="c1">%%·Note:·RelFileName·below·is·the·*stem*·without·trailing·.rel,</span><span·class="w"> |
| 325 | </span><span·class="c1">%%·.script·etc.</span><span·class="w"> | 325 | </span><span·class="c1">%%·.script·etc.</span><span·class="w"> |
| 326 | </span><span·class="c1">%%</span><span·class="w"> | 326 | </span><span·class="c1">%%</span><span·class="w"> |
| 327 | </span><span·class="c1">%%·create(RelFileName)</span><span·class="w"> | 327 | </span><span·class="c1">%%·create(RelFileName)</span><span·class="w"> |
| 328 | </span><span·class="c1">%%</span><span·class="w"> | 328 | </span><span·class="c1">%%</span><span·class="w"> |
| 329 | </span><span·class="nf">create</span><span·class="p"·data-group-id=" | 329 | </span><span·class="nf">create</span><span·class="p"·data-group-id="6728893661-4">(</span><span·class="n">RelFileName</span><span·class="p"·data-group-id="6728893661-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 330 | ····</span><span·class="nf">create</span><span·class="p"·data-group-id=" | 330 | ····</span><span·class="nf">create</span><span·class="p"·data-group-id="6728893661-5">(</span><span·class="n">RelFileName</span><span·class="p">,</span><span·class="p"·data-group-id="6728893661-6">[</span><span·class="p"·data-group-id="6728893661-6">]</span><span·class="p"·data-group-id="6728893661-5">)</span><span·class="p">.</span><span·class="w"> |
| 331 | </span><span·class="nf">create</span><span·class="p"·data-group-id=" | 331 | </span><span·class="nf">create</span><span·class="p"·data-group-id="6728893661-7">(</span><span·class="n">RelFileName</span><span·class="p">,</span><span·class="n">SystoolsOpts</span><span·class="p"·data-group-id="6728893661-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 332 | ····</span><span·class="n">RelFile</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">RelFileName</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="s">".rel"</span><span·class="p">,</span><span·class="w"> | 332 | ····</span><span·class="n">RelFile</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">RelFileName</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="s">".rel"</span><span·class="p">,</span><span·class="w"> |
| 333 | ····</span><span·class="n">Dir</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">dirname</span><span·class="p"·data-group-id=" | 333 | ····</span><span·class="n">Dir</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">dirname</span><span·class="p"·data-group-id="6728893661-8">(</span><span·class="n">RelFileName</span><span·class="p"·data-group-id="6728893661-8">)</span><span·class="p">,</span><span·class="w"> |
| 334 | ····</span><span·class="n">PlainRelFileName</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">join</span><span·class="p"·data-group-id=" | 334 | ····</span><span·class="n">PlainRelFileName</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">join</span><span·class="p"·data-group-id="6728893661-9">(</span><span·class="n">Dir</span><span·class="p">,</span><span·class="s">"plain"</span><span·class="p"·data-group-id="6728893661-9">)</span><span·class="p">,</span><span·class="w"> |
| 335 | ····</span><span·class="n">PlainRelFile</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">PlainRelFileName</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="s">".rel"</span><span·class="p">,</span><span·class="w"> | 335 | ····</span><span·class="n">PlainRelFile</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">PlainRelFileName</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="s">".rel"</span><span·class="p">,</span><span·class="w"> |
| 336 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fwrite</span><span·class="p"·data-group-id=" | 336 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fwrite</span><span·class="p"·data-group-id="6728893661-10">(</span><span·class="s">"Reading·file:·~ts·...</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6728893661-11">[</span><span·class="n">RelFile</s[·...·truncated·by·diffoscope;·len:·99,·SHA:·93d8b9d6b63bf32164a705490a9f68fad0a22915d1d70bd25ebf6fcba3fe875f·...·]-10">)</span><span·class="p">,</span><span·class="w"> |
| 337 | ····</span><span·class="p"·data-group-id=" | 337 | ····</span><span·class="p"·data-group-id="6728893661-12">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6728893661-13">[</span><span·class="n">RelSpec</span><span·class="p"·data-group-id="6728893661-13">]</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·313,·SHA:·9d53eef6f7bb3f25129afc4522f7b4af61e87c159971237acd520737cef02700·...·]-14">)</span><span·class="p">,</span><span·class="w"> |
| 338 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fwrite</span><span·class="p"·data-group-id=" | 338 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fwrite</span><span·class="p"·data-group-id="6728893661-15">(</span><span·class="s">"Creating·file:·~ts·from·~ts·...</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w"> |
| 339 | ··············</span><span·class="p"·data-group-id=" | 339 | ··············</span><span·class="p"·data-group-id="6728893661-16">[</span><span·class="n">PlainRelFile</span><span·class="p">,</span><span·class="w">·</span><span·class="n">RelFile</span><span·class="p"·data-group-id="6728893661-16">]</span><span·class="p"·data-group-id="6728893661-15">)</span><span·class="p">,</span><span·class="w"> |
| 340 | ····</span><span·class="p"·data-group-id=" | 340 | ····</span><span·class="p"·data-group-id="6728893661-17">{</span><span·class="ss">release</span><span·class="p">,</span><span·class="w"> |
| 341 | ·····</span><span·class="p"·data-group-id=" | 341 | ·····</span><span·class="p"·data-group-id="6728893661-18">{</span><span·class="n">RelName</span><span·class="p">,</span><span·class="w">·</span><span·class="n">RelVsn</span><span·class="p"·data-group-id="6728893661-18">}</span><span·class="p">,</span><span·class="w"> |
| 342 | ·····</span><span·class="p"·data-group-id=" | 342 | ·····</span><span·class="p"·data-group-id="6728893661-19">{</span><span·class="ss">erts</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ErtsVsn</span><span·class="p"·data-group-id="6728893661-19">}</span><span·class="p">,</span><span·class="w"> |
| 343 | ·····</span><span·class="n">AppVsns</span><span·class="p"·data-group-id=" | 343 | ·····</span><span·class="n">AppVsns</span><span·class="p"·data-group-id="6728893661-17">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">RelSpec</span><span·class="p">,</span><span·class="w"> |
| 344 | ····</span><span·class="n">PlainRelSpec</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 344 | ····</span><span·class="n">PlainRelSpec</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6728893661-20">{</span><span·class="ss">release</span><span·class="p">,</span><span·class="w"> |
| 345 | ····················</span><span·class="p"·data-group-id=" | 345 | ····················</span><span·class="p"·data-group-id="6728893661-21">{</span><span·class="n">RelName</span><span·class="p">,</span><span·class="w">·</span><span·class="n">RelVsn</span><span·class="p"·data-group-id="6728893661-21">}</span><span·class="p">,</span><span·class="w"> |
| 346 | ····················</span><span·class="p"·data-group-id=" | 346 | ····················</span><span·class="p"·data-group-id="6728893661-22">{</span><span·class="ss">erts</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ErtsVsn</span><span·class="p"·data-group-id="6728893661-22">}</span><span·class="p">,</span><span·class="w"> |
| 347 | ····················</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">filter</span><span·class="p"·data-group-id=" | 347 | ····················</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">filter</span><span·class="p"·data-group-id="6728893661-23">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="6728893661-24">(</span><span·class="p"·data-group-id="6728893661-25">{</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</s[·...·truncated·by·diffoscope;·len:·99,·SHA:·572739be0a4298bd216d1c7cdee2ae5dec8ede4e788748e80d0917fb64ef0c75·...·]-24">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 348 | ·········································</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> | 348 | ·········································</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> |
| 349 | ····································</span><span·class="p"·data-group-id=" | 349 | ····································</span><span·class="p"·data-group-id="6728893661-26">(</span><span·class="p"·data-group-id="6728893661-27">{</span><span·class="ss">stdlib</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="p"·data-group-id="6728893661-27">}</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·18,·SHA:·a6f47713c54566f0d502547f0c77b63b6c61d2be18eb65a86c8aa759470de717·...·]-26">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 350 | ·········································</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> | 350 | ·········································</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> |
| 351 | ····································</span><span·class="p"·data-group-id=" | 351 | ····································</span><span·class="p"·data-group-id="6728893661-28">(</span><span·class="p">_</span><span·class="p"·data-group-id="6728893661-28">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 352 | ·········································</span><span·class="ss">false</span><span·class="w"> | 352 | ·········································</span><span·class="ss">false</span><span·class="w"> |
| 353 | ·································</span><span·class="k">end</span><span·class="p">,</span><span·class="w">·</span><span·class="n">AppVsns</span><span·class="p"·data-group-id=" | 353 | ·································</span><span·class="k">end</span><span·class="p">,</span><span·class="w">·</span><span·class="n">AppVsns</span><span·class="p"·data-group-id="6728893661-23">)</span><span·class="w"> |
| 354 | ···················</span><span·class="p"·data-group-id=" | 354 | ···················</span><span·class="p"·data-group-id="6728893661-20">}</span><span·class="p">,</span><span·class="w"> |
| 355 | ····</span><span·class="p"·data-group-id=" | 355 | ····</span><span·class="p"·data-group-id="6728893661-29">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Fd</span><span·class="p"·data-group-id="6728893661-29">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·cl[·...·truncated·by·diffoscope;·len:·387,·SHA:·de073bbdb73cf3cea9d77ce04b549e360695c462178d7f2922dc1cfda80b5226·...·]-30">)</span><span·class="p">,</span><span·class="w"> |
| 356 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fwrite</span><span·class="p"·data-group-id=" | 356 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fwrite</span><span·class="p"·data-group-id="6728893661-32">(</span><span·class="n">Fd</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"</span><span·class="si">~p</span><span·class="s">.</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><s[·...·truncated·by·diffoscope;·len:·206,·SHA:·caec1ad58d1af01b3482920782223c5dcbcd9598a9853197270cd04d1cafaf12·...·]-32">)</span><span·class="p">,</span><span·class="w"> |
| 357 | ····</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id=" | 357 | ····</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id="6728893661-34">(</span><span·class="n">Fd</span><span·class="p"·data-group-id="6728893661-34">)</span><span·class="p">,</span><span·class="w"> |
| 358 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fwrite</span><span·class="p"·data-group-id=" | 358 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fwrite</span><span·class="p"·data-group-id="6728893661-35">(</span><span·class="s">"Making·\"~ts.script\"·and·\"~ts.boot\"·files·...</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w"> |
| 359 | » ······</span><span·class="p"·data-group-id=" | 359 | » ······</span><span·class="p"·data-group-id="6728893661-36">[</span><span·class="n">PlainRelFileName</span><span·class="p">,</span><span·class="n">PlainRelFileName</span><span·class="p"·data-group-id="6728893661-36">]</span><span·class="p"·data-group-id="6728893661-35">)</span><span·class="p">,</span><span·class="w"> |
| 360 | ····</span><span·class="nf">make_script</span><span·class="p"·data-group-id=" | 360 | ····</span><span·class="nf">make_script</span><span·class="p"·data-group-id="6728893661-37">(</span><span·class="n">PlainRelFileName</span><span·class="p">,</span><span·class="n">SystoolsOpts</span><span·class="p"·data-group-id="6728893661-37">)</span><span·class="p">,</span><span·class="w"> |
| 361 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fwrite</span><span·class="p"·data-group-id=" | 361 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fwrite</span><span·class="p"·data-group-id="6728893661-38">(</span><span·class="s">"Making·\"~ts.script\"·and·\"~ts.boot\"·files·...</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w"> |
| 362 | ··············</span><span·class="p"·data-group-id=" | 362 | ··············</span><span·class="p"·data-group-id="6728893661-39">[</span><span·class="n">RelFileName</span><span·class="p">,</span><span·class="w">·</span><span·class="n">RelFileName</span><span·class="p"·data-group-id="6728893661-39">]</span><span·class="p"·data-group-id="6728893661-38">)</span><span·class="p">,</span><span·class="w"> |
| 363 | ····</span><span·class="nf">make_script</span><span·class="p"·data-group-id=" | 363 | ····</span><span·class="nf">make_script</span><span·class="p"·data-group-id="6728893661-40">(</span><span·class="n">RelFileName</span><span·class="p">,</span><span·class="n">SystoolsOpts</span><span·class="p"·data-group-id="6728893661-40">)</span><span·class="p">,</span><span·class="w"> |
| 364 | ····</span><span·class="n">TarFileName</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">RelFileName</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="s">".tar.gz"</span><span·class="p">,</span><span·class="w"> | 364 | ····</span><span·class="n">TarFileName</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">RelFileName</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="s">".tar.gz"</span><span·class="p">,</span><span·class="w"> |
| 365 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fwrite</span><span·class="p"·data-group-id=" | 365 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fwrite</span><span·class="p"·data-group-id="6728893661-41">(</span><span·class="s">"Creating·tar·file·~ts·...</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6728893661-42">[</span><span·class="n">TarFil[·...·truncated·by·diffoscope;·len:·107,·SHA:·79500d17ad393c13e13ddfd15e6dd4ed9b0371ee90ec67213f7338b10843e0a9·...·]-41">)</span><span·class="p">,</span><span·class="w"> |
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| Offset 192, 18 lines modified | Offset 192, 18 lines modified | ||
| 192 | ··</a> | 192 | ··</a> |
| 193 | ··<span·class="text">Representation·of·Floating·Point·Numbers</span> | 193 | ··<span·class="text">Representation·of·Floating·Point·Numbers</span> |
| 194 | </h3> | 194 | </h3> |
| 195 | <p>When·working·with·floats·you·may·not·see·what·you·expect·when·printing·or·doing | 195 | <p>When·working·with·floats·you·may·not·see·what·you·expect·when·printing·or·doing |
| 196 | arithmetic·operations.·This·is·because·floats·are·represented·by·a·fixed·number | 196 | arithmetic·operations.·This·is·because·floats·are·represented·by·a·fixed·number |
| 197 | of·bits·in·a·base-2·system·while·printed·floats·are·represented·with·a·base-10 | 197 | of·bits·in·a·base-2·system·while·printed·floats·are·represented·with·a·base-10 |
| 198 | system.·Erlang·uses·64-bit·floats.·Here·are·examples·of·this·phenomenon:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="mf">0.1</span><span·class="o">+</span><span·class="mf">0.2</span><span·class="p">.</span><span·class="w"> | 198 | system.·Erlang·uses·64-bit·floats.·Here·are·examples·of·this·phenomenon:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="mf">0.1</span><span·class="o">+</span><span·class="mf">0.2</span><span·class="p">.</span><span·class="w"> |
| 199 | </span><span·class="mf">0.30000000000000004</span></code></pre><p>The·real·numbers·<code·class="inline">0.1</code>·and·<code·class="inline">0.2</code>·cannot·be·represented·exactly·as·floats.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="p"·data-group-id=" | 199 | </span><span·class="mf">0.30000000000000004</span></code></pre><p>The·real·numbers·<code·class="inline">0.1</code>·and·<code·class="inline">0.2</code>·cannot·be·represented·exactly·as·floats.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="p"·data-group-id="3540964034-1">{</span><span·class="mf">36028797018963968.0</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">36028797018963968</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="mf">36028797018963968.0</span><span·class="p">,</span><span·class="w"> |
| 200 | ··</span><span·class="mf">36028797018963970.0</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">36028797018963970</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="mf">36028797018963970.0</span><span·class="p"·data-group-id=" | 200 | ··</span><span·class="mf">36028797018963970.0</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">36028797018963970</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="mf">36028797018963970.0</span><span·class="p"·data-group-id="3540964034-1">}</span><span·class="p">.</span><span·class="w"> |
| 201 | </span><span·class="p"·data-group-id=" | 201 | </span><span·class="p"·data-group-id="3540964034-2">{</span><span·class="mf">3.602879701896397e16</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">true</span><span·class="p">,</span><span·class="w"> |
| 202 | ·</span><span·class="mf">3.602879701896397e16</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">false</span><span·class="p"·data-group-id=" | 202 | ·</span><span·class="mf">3.602879701896397e16</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">false</span><span·class="p"·data-group-id="3540964034-2">}</span><span·class="p">.</span></code></pre><p>The·value·<code·class="inline">36028797018963968</code>·can·be·represented·exactly·as·a·float·value·but |
| 203 | Erlang's·pretty·printer·rounds·<code·class="inline">36028797018963968.0</code>·to·<code·class="inline">3.602879701896397e16</code> | 203 | Erlang's·pretty·printer·rounds·<code·class="inline">36028797018963968.0</code>·to·<code·class="inline">3.602879701896397e16</code> |
| 204 | (<code·class="inline">=36028797018963970.0</code>)·as·all·values·in·the·range | 204 | (<code·class="inline">=36028797018963970.0</code>)·as·all·values·in·the·range |
| 205 | <code·class="inline">[36028797018963966.0,·36028797018963972.0]</code>·are·represented·by | 205 | <code·class="inline">[36028797018963966.0,·36028797018963972.0]</code>·are·represented·by |
| 206 | <code·class="inline">36028797018963968.0</code>.</p><p>For·more·information·about·floats·and·issues·with·them·see:</p><ul><li><a·href="https://floating-point-gui.de/">What·Every·Programmer·Should·Know·About·Floating-Point·Arithmetic</a></li><li><a·href="https://0.30000000000000004.com/">0.30000000000000004.com/</a></li><li><a·href="https://docs.python.org/3/tutorial/floatingpoint.html">Floating·Point·Arithmetic:·Issues·and·Limitations</a></li></ul><p>If·you·need·to·work·with·exact·decimal·fractions,·for·instance·to·represent | 206 | <code·class="inline">36028797018963968.0</code>.</p><p>For·more·information·about·floats·and·issues·with·them·see:</p><ul><li><a·href="https://floating-point-gui.de/">What·Every·Programmer·Should·Know·About·Floating-Point·Arithmetic</a></li><li><a·href="https://0.30000000000000004.com/">0.30000000000000004.com/</a></li><li><a·href="https://docs.python.org/3/tutorial/floatingpoint.html">Floating·Point·Arithmetic:·Issues·and·Limitations</a></li></ul><p>If·you·need·to·work·with·exact·decimal·fractions,·for·instance·to·represent |
| 207 | money,·it·is·recommended·to·use·a·library·that·handles·that,·or·work·in | 207 | money,·it·is·recommended·to·use·a·library·that·handles·that,·or·work·in |
| 208 | cents·instead·of·dollars·or·euros·so·that·decimal·fractions·are·not·needed.</p><p>Also·note·that·Erlang's·floats·do·not·exactly·match·IEEE·754·floats, | 208 | cents·instead·of·dollars·or·euros·so·that·decimal·fractions·are·not·needed.</p><p>Also·note·that·Erlang's·floats·do·not·exactly·match·IEEE·754·floats, |
| 209 | in·that·neither·<em>Inf</em>·nor·<em>NaN</em>·are·supported·in·Erlang.·Any | 209 | in·that·neither·<em>Inf</em>·nor·<em>NaN</em>·are·supported·in·Erlang.·Any |
| Offset 237, 52 lines modified | Offset 237, 52 lines modified | ||
| 237 | by·eight·are·called·<em>binaries</em>.</p><p><em>Examples:</em></p><pre><code·class="text">1>·<<10,20>>. | 237 | by·eight·are·called·<em>binaries</em>.</p><p><em>Examples:</em></p><pre><code·class="text">1>·<<10,20>>. |
| 238 | <<10,20>> | 238 | <<10,20>> |
| 239 | 2>·<<"ABC">>. | 239 | 2>·<<"ABC">>. |
| 240 | <<"ABC">> | 240 | <<"ABC">> |
| 241 | 3>·<<1:1,0:1>>. | 241 | 3>·<<1:1,0:1>>. |
| 242 | <<2:2>></code></pre><p>The·<a·href="../../erts-15.2.3/doc/html/erlang.html#is_bitstring/1"><code·class="inline">is_bitstring/1</code></a>·BIF·tests·whether·a | 242 | <<2:2>></code></pre><p>The·<a·href="../../erts-15.2.3/doc/html/erlang.html#is_bitstring/1"><code·class="inline">is_bitstring/1</code></a>·BIF·tests·whether·a |
| 243 | term·is·a·bit·string,·and·the·<a·href="../../erts-15.2.3/doc/html/erlang.html#is_binary/1"><code·class="inline">is_binary/1</code></a> | 243 | term·is·a·bit·string,·and·the·<a·href="../../erts-15.2.3/doc/html/erlang.html#is_binary/1"><code·class="inline">is_binary/1</code></a> |
| 244 | BIF·tests·whether·a·term·is·a·binary.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nf">is_bitstring</span><span·class="p"·data-group-id=" | 244 | BIF·tests·whether·a·term·is·a·binary.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nf">is_bitstring</span><span·class="p"·data-group-id="2458168610-1">(</span><span·class="p"·data-group-id="2458168610-2"><<</span><span·class="mi">1</span><span·class="p">:</span><span·class="mi">1</span><span·class="p"·data-group-id="2458168610-2">>></span><span·class="p"·data-group-id="245816861[·...·truncated·by·diffoscope;·len:·1,·SHA:·5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 245 | </span><span·class="ss">true</span><span·class="gp·unselectable"> | 245 | </span><span·class="ss">true</span><span·class="gp·unselectable"> |
| 246 | 2>·</span><span·class="nf">is_binary</span><span·class="p"·data-group-id=" | 246 | 2>·</span><span·class="nf">is_binary</span><span·class="p"·data-group-id="2458168610-3">(</span><span·class="p"·data-group-id="2458168610-4"><<</span><span·class="mi">1</span><span·class="p">:</span><span·class="mi">1</span><span·class="p"·data-group-id="2458168610-4">>></span><span·class="p"·data-group-id="245816861[·...·truncated·by·diffoscope;·len:·1,·SHA:·5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9·...·]-3">)</span><span·class="p">.</span><span·class="w"> |
| 247 | </span><span·class="ss">false</span><span·class="gp·unselectable"> | 247 | </span><span·class="ss">false</span><span·class="gp·unselectable"> |
| 248 | 3>·</span><span·class="nf">is_binary</span><span·class="p"·data-group-id=" | 248 | 3>·</span><span·class="nf">is_binary</span><span·class="p"·data-group-id="2458168610-5">(</span><span·class="p"·data-group-id="2458168610-6"><<</span><span·class="mi">42</span><span·class="p"·data-group-id="2458168610-6">>></span><span·class="p"·data-group-id="2458168610-5">)</span><span·class="p">.</span><span·class="w"> |
| 249 | </span><span·class="ss">true</span><span·class="w"> | 249 | </span><span·class="ss">true</span><span·class="w"> |
| 250 | </span></code></pre><p>For·more·examples,·see·<a·href="../../doc/system/bit_syntax.html">Programming·Examples</a>.</p><h2·id="reference"·class="section-heading"> | 250 | </span></code></pre><p>For·more·examples,·see·<a·href="../../doc/system/bit_syntax.html">Programming·Examples</a>.</p><h2·id="reference"·class="section-heading"> |
| 251 | ··<a·href="#reference"·class="hover-link"> | 251 | ··<a·href="#reference"·class="hover-link"> |
| 252 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 252 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 253 | ··</a> | 253 | ··</a> |
| 254 | ··<span·class="text">Reference</span> | 254 | ··<span·class="text">Reference</span> |
| 255 | </h2> | 255 | </h2> |
| 256 | <p>A·term·that·is·<a·href="../../doc/system/system_limits.html#unique_references">unique</a> | 256 | <p>A·term·that·is·<a·href="../../doc/system/system_limits.html#unique_references">unique</a> |
| 257 | among·connected·nodes.·A·reference·is·created·by·calling·the | 257 | among·connected·nodes.·A·reference·is·created·by·calling·the |
| 258 | <a·href="../../erts-15.2.3/doc/html/erlang.html#make_ref/0"><code·class="inline">make_ref/0</code></a>·BIF.·The | 258 | <a·href="../../erts-15.2.3/doc/html/erlang.html#make_ref/0"><code·class="inline">make_ref/0</code></a>·BIF.·The |
| 259 | <a·href="../../erts-15.2.3/doc/html/erlang.html#is_reference/1"><code·class="inline">is_reference/1</code></a>·BIF·tests·whether·a·term | 259 | <a·href="../../erts-15.2.3/doc/html/erlang.html#is_reference/1"><code·class="inline">is_reference/1</code></a>·BIF·tests·whether·a·term |
| 260 | is·a·reference.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">Ref</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">make_ref</span><span·class="p"·data-group-id=" | 260 | is·a·reference.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">Ref</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">make_ref</span><span·class="p"·data-group-id="8798104980-1">(</span><span·class="p"·data-group-id="8798104980-1">)</span><span·class="p">.</span><span·class="w"> |
| 261 | </span><span·class="p">#</span><span·class="n">Ref</span><span·class="o"><</span><span·class="mf">0.76482849</span><span·class="p">.</span><span·class="mf">3801088007.198204</span><span·class="o">></span><span·class="gp·unselectable"> | 261 | </span><span·class="p">#</span><span·class="n">Ref</span><span·class="o"><</span><span·class="mf">0.76482849</span><span·class="p">.</span><span·class="mf">3801088007.198204</span><span·class="o">></span><span·class="gp·unselectable"> |
| 262 | 2>·</span><span·class="nf">is_reference</span><span·class="p"·data-group-id=" | 262 | 2>·</span><span·class="nf">is_reference</span><span·class="p"·data-group-id="8798104980-2">(</span><span·class="n">Ref</span><span·class="p"·data-group-id="8798104980-2">)</span><span·class="p">.</span><span·class="w"> |
| 263 | </span><span·class="ss">true</span></code></pre><h2·id="fun"·class="section-heading"> | 263 | </span><span·class="ss">true</span></code></pre><h2·id="fun"·class="section-heading"> |
| 264 | ··<a·href="#fun"·class="hover-link"> | 264 | ··<a·href="#fun"·class="hover-link"> |
| 265 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 265 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 266 | ··</a> | 266 | ··</a> |
| 267 | ··<span·class="text">Fun</span> | 267 | ··<span·class="text">Fun</span> |
| 268 | </h2> | 268 | </h2> |
| 269 | <p>A·fun·is·a·functional·object.·Funs·make·it·possible·to·create·an·anonymous | 269 | <p>A·fun·is·a·functional·object.·Funs·make·it·possible·to·create·an·anonymous |
| 270 | function·and·pass·the·function·itself·—·not·its·name·—·as·argument·to·other | 270 | function·and·pass·the·function·itself·—·not·its·name·—·as·argument·to·other |
| 271 | functions.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">Fun1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="4 | 271 | functions.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">Fun1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="5446875551-1">(</span><span·class="n">X</span><span·class="p"·data-group-id="5446875551-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">X</span><span·class="o">+</span><span·class="mi">1</span><span·class="w">·</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 272 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="o"><</span><span·class="ss">erl_eval</span><span·class="p">.</span><span·class="mf">6.39074546</span><span·class="o">></span><span·class="gp·unselectable"> | 272 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="o"><</span><span·class="ss">erl_eval</span><span·class="p">.</span><span·class="mf">6.39074546</span><span·class="o">></span><span·class="gp·unselectable"> |
| 273 | 2>·</span><span·class="n">Fun1</span><span·class="p"·data-group-id="4 | 273 | 2>·</span><span·class="n">Fun1</span><span·class="p"·data-group-id="5446875551-2">(</span><span·class="mi">2</span><span·class="p"·data-group-id="5446875551-2">)</span><span·class="p">.</span><span·class="w"> |
| 274 | </span><span·class="mi">3</span></code></pre><p>The·<a·href="../../erts-15.2.3/doc/html/erlang.html#is_function/1"><code·class="inline">is_function/1</code></a>·and·<a·href="../../erts-15.2.3/doc/html/erlang.html#is_function/2"><code·class="inline">is_function/2</code></a> | 274 | </span><span·class="mi">3</span></code></pre><p>The·<a·href="../../erts-15.2.3/doc/html/erlang.html#is_function/1"><code·class="inline">is_function/1</code></a>·and·<a·href="../../erts-15.2.3/doc/html/erlang.html#is_function/2"><code·class="inline">is_function/2</code></a> |
| 275 | BIFs·tests·whether·a·term·is·a·fun.</p><p><em>Examples</em>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 275 | BIFs·tests·whether·a·term·is·a·fun.</p><p><em>Examples</em>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="1006610217-1">(</span><span·class="p"·data-group-id="1006610217-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="w">·</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 276 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="o"><</span><span·class="ss">erl_eval</span><span·class="p">.</span><span·class="mf">43.105768164</span><span·class="o">></span><span·class="gp·unselectable"> | 276 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="o"><</span><span·class="ss">erl_eval</span><span·class="p">.</span><span·class="mf">43.105768164</span><span·class="o">></span><span·class="gp·unselectable"> |
| 277 | 2>·</span><span·class="nf">is_function</span><span·class="p"·data-group-id=" | 277 | 2>·</span><span·class="nf">is_function</span><span·class="p"·data-group-id="1006610217-2">(</span><span·class="n">F</span><span·class="p"·data-group-id="1006610217-2">)</span><span·class="p">.</span><span·class="w"> |
| 278 | </span><span·class="ss">true</span><span·class="gp·unselectable"> | 278 | </span><span·class="ss">true</span><span·class="gp·unselectable"> |
| 279 | 3>·</span><span·class="nf">is_function</span><span·class="p"·data-group-id=" | 279 | 3>·</span><span·class="nf">is_function</span><span·class="p"·data-group-id="1006610217-3">(</span><span·class="n">F</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">0</span><span·class="p"·data-group-id="1006610217-3">)</span><span·class="p">.</span><span·class="w"> |
| 280 | </span><span·class="ss">true</span><span·class="gp·unselectable"> | 280 | </span><span·class="ss">true</span><span·class="gp·unselectable"> |
| 281 | 4>·</span><span·class="nf">is_function</span><span·class="p"·data-group-id=" | 281 | 4>·</span><span·class="nf">is_function</span><span·class="p"·data-group-id="1006610217-4">(</span><span·class="n">F</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="1006610217-4">)</span><span·class="p">.</span><span·class="w"> |
| 282 | </span><span·class="ss">false</span></code></pre><p>Read·more·about·funs·in·<a·href="expressions.html#fun-expressions">Fun·Expressions</a>.·For·more | 282 | </span><span·class="ss">false</span></code></pre><p>Read·more·about·funs·in·<a·href="expressions.html#fun-expressions">Fun·Expressions</a>.·For·more |
| 283 | examples,·see·<a·href="../../doc/system/funs.html">Programming·Examples</a>.</p><h2·id="port-identifier"·class="section-heading"> | 283 | examples,·see·<a·href="../../doc/system/funs.html">Programming·Examples</a>.</p><h2·id="port-identifier"·class="section-heading"> |
| 284 | ··<a·href="#port-identifier"·class="hover-link"> | 284 | ··<a·href="#port-identifier"·class="hover-link"> |
| 285 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 285 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 286 | ··</a> | 286 | ··</a> |
| 287 | ··<span·class="text">Port·Identifier</span> | 287 | ··<span·class="text">Port·Identifier</span> |
| 288 | </h2> | 288 | </h2> |
| Offset 300, 94 lines modified | Offset 300, 94 lines modified | ||
| 300 | for·a·new·process·after·a·while.</p><p>The·BIF·<a·href="../../erts-15.2.3/doc/html/erlang.html#self/0"><code·class="inline">self/0</code></a>·returns·the·Pid·of·the·calling·process.·When | 300 | for·a·new·process·after·a·while.</p><p>The·BIF·<a·href="../../erts-15.2.3/doc/html/erlang.html#self/0"><code·class="inline">self/0</code></a>·returns·the·Pid·of·the·calling·process.·When |
| 301 | <a·href="ref_man_processes.html#process-creation">creating·a·new·process</a>,·the·parent | 301 | <a·href="ref_man_processes.html#process-creation">creating·a·new·process</a>,·the·parent |
| 302 | process·will·be·able·to·get·the·Pid·of·the·child·process·either·via·the·return | 302 | process·will·be·able·to·get·the·Pid·of·the·child·process·either·via·the·return |
| 303 | value,·as·is·the·case·when·calling·the·<a·href="../../erts-15.2.3/doc/html/erlang.html#spawn/3"><code·class="inline">spawn/3</code></a>·BIF,·or·via | 303 | value,·as·is·the·case·when·calling·the·<a·href="../../erts-15.2.3/doc/html/erlang.html#spawn/3"><code·class="inline">spawn/3</code></a>·BIF,·or·via |
| 304 | a·message,·which·is·the·case·when·calling·the | 304 | a·message,·which·is·the·case·when·calling·the |
| 305 | <a·href="../../erts-15.2.3/doc/html/erlang.html#spawn_request/5"><code·class="inline">spawn_request/5</code></a>·BIF.·A·Pid·is·typically·used·when | 305 | <a·href="../../erts-15.2.3/doc/html/erlang.html#spawn_request/5"><code·class="inline">spawn_request/5</code></a>·BIF.·A·Pid·is·typically·used·when |
| 306 | when·sending·a·process·a·<a·href="ref_man_processes.html#signals">signal</a>.·The | 306 | when·sending·a·process·a·<a·href="ref_man_processes.html#signals">signal</a>.·The |
| 307 | <a·href="../../erts-15.2.3/doc/html/erlang.html#is_pid/1"><code·class="inline">is_pid/1</code></a>·BIF·tests·whether·a·term·is·a·Pid.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 307 | <a·href="../../erts-15.2.3/doc/html/erlang.html#is_pid/1"><code·class="inline">is_pid/1</code></a>·BIF·tests·whether·a·term·is·a·Pid.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="1520785498-1">(</span><span·class="ss">m</span><span·class="p"·data-group-id="1520785498-1">)</span><span·class="p">.</span><span·class="w"> |
| 308 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 308 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="1520785498-2">(</span><span·class="p"·data-group-id="1520785498-3">[</span><span·class="ss">loop</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data-group-id="1520785498-3">]</span><span·class="p"·data-group-id="1520785498-2">)</span><span·class="p">.</span><span·class="w"> |
| 309 | </span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 309 | </span><span·class="nf">loop</span><span·class="p"·data-group-id="1520785498-4">(</span><span·class="p"·data-group-id="1520785498-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 310 | ····</span><span·class="k">receive</span><span·class="w"> | 310 | ····</span><span·class="k">receive</span><span·class="w"> |
| 311 | ········</span><span·class="ss">who_are_you</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 311 | ········</span><span·class="ss">who_are_you</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 312 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 312 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="1520785498-5">(</span><span·class="s">"I·am·</span><span·class="si">~p</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1520785498-6">[</span><span·class="nf">s[·...·truncated·by·diffoscope;·len:·210,·SHA:·abe4a20c11a85901ea8b45b58fca9d380f8de36735db156c440031ab34a6c8cd·...·]-5">)</span><span·class="p">,</span><span·class="w"> |
| 313 | ············</span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 313 | ············</span><span·class="nf">loop</span><span·class="p"·data-group-id="1520785498-8">(</span><span·class="p"·data-group-id="1520785498-8">)</span><span·class="w"> |
| 314 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 314 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 315 | </span><span·class="mi">1</span><span·class="o">></span><span·class="w">·</span><span·class="n">P</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">spawn</span><span·class="p"·data-group-id=" | 315 | </span><span·class="mi">1</span><span·class="o">></span><span·class="w">·</span><span·class="n">P</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">spawn</span><span·class="p"·data-group-id="1520785498-9">(</span><span·class="ss">m</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">loop</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1520785498-10">[</span><span·class="p"·data-group-id="[·...·truncated·by·diffoscope;·len:·64,·SHA:·6874449877ef65a71f17d39e8d06edc0de36dd7b2c4c248e9d94ad9c68031bd9·...·]-9">)</span><span·class="p">.</span><span·class="w"> |
| 316 | </span><span·class="o"><</span><span·class="mf">0.58</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="gp·unselectable"> | 316 | </span><span·class="o"><</span><span·class="mf">0.58</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="gp·unselectable"> |
| 317 | 2>·</span><span·class="n">P</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="ss">who_are_you</span><span·class="p">.</span><span·class="w"> | 317 | 2>·</span><span·class="n">P</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="ss">who_are_you</span><span·class="p">.</span><span·class="w"> |
| 318 | </span><span·class="n">I</span><span·class="w">·</span><span·class="ss">am</span><span·class="w">·</span><span·class="o"><</span><span·class="mf">0.58</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w"> | 318 | </span><span·class="n">I</span><span·class="w">·</span><span·class="ss">am</span><span·class="w">·</span><span·class="o"><</span><span·class="mf">0.58</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w"> |
| 319 | </span><span·class="ss">who_are_you</span></code></pre><p>Read·more·about·processes·in·<a·href="ref_man_processes.html">Processes</a>.</p><h2·id="tuple"·class="section-heading"> | 319 | </span><span·class="ss">who_are_you</span></code></pre><p>Read·more·about·processes·in·<a·href="ref_man_processes.html">Processes</a>.</p><h2·id="tuple"·class="section-heading"> |
| 320 | ··<a·href="#tuple"·class="hover-link"> | 320 | ··<a·href="#tuple"·class="hover-link"> |
| 321 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 321 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 322 | ··</a> | 322 | ··</a> |
| 323 | ··<span·class="text">Tuple</span> | 323 | ··<span·class="text">Tuple</span> |
| 324 | </h2> | 324 | </h2> |
| 325 | <p>A·tuple·is·a·compound·data·type·with·a·fixed·number·of·terms:</p><pre><code·class="text">{Term1,...,TermN}</code></pre><p>Each·term·<code·class="inline">Term</code>·in·the·tuple·is·called·an·<em>element</em>.·The·number·of·elements·is | 325 | <p>A·tuple·is·a·compound·data·type·with·a·fixed·number·of·terms:</p><pre><code·class="text">{Term1,...,TermN}</code></pre><p>Each·term·<code·class="inline">Term</code>·in·the·tuple·is·called·an·<em>element</em>.·The·number·of·elements·is |
| 326 | said·to·be·the·<em>size</em>·of·the·tuple.</p><p>There·exists·a·number·of·BIFs·to·manipulate·tuples.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">P</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 326 | said·to·be·the·<em>size</em>·of·the·tuple.</p><p>There·exists·a·number·of·BIFs·to·manipulate·tuples.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">P</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6324692187-1">{</span><span·class="ss">adam</span><span·class="p">,</span><span·class="mi">24</span><span·class="p">,</span><span·class="p"·data-group-id="6324692187-2">{</span><span·class="ss">july</span><span·class="p">,</span><span·class="mi">29</span><[·...·truncated·by·diffoscope;·len:·93,·SHA:·56b9fbc15376ee3afca6995065e29a1b39efd946e1ce47db88899fcade66d14b·...·]-1">}</span><span·class="p">.</span><span·class="w"> |
| 327 | </span><span·class="p"·data-group-id=" | 327 | </span><span·class="p"·data-group-id="6324692187-3">{</span><span·class="ss">adam</span><span·class="p">,</span><span·class="mi">24</span><span·class="p">,</span><span·class="p"·data-group-id="6324692187-4">{</span><span·class="ss">july</span><span·class="p">,</span><span·class="mi">29</span><[·...·truncated·by·diffoscope;·len:·93,·SHA:·31c16d4eaa7944223db49e92520a18f9e02ca1a920e9eb7af73fe64aa11627a7·...·]-3">}</span><span·class="gp·unselectable"> |
| 328 | 2>·</span><span·class="nf">element</span><span·class="p"·data-group-id=" | 328 | 2>·</span><span·class="nf">element</span><span·class="p"·data-group-id="6324692187-5">(</span><span·class="mi">1</span><span·class="p">,</span><span·class="n">P</span><span·class="p"·data-group-id="6324692187-5">)</span><span·class="p">.</span><span·class="w"> |
| 329 | </span><span·class="ss">adam</span><span·class="gp·unselectable"> | 329 | </span><span·class="ss">adam</span><span·class="gp·unselectable"> |
| 330 | 3>·</span><span·class="nf">element</span><span·class="p"·data-group-id=" | 330 | 3>·</span><span·class="nf">element</span><span·class="p"·data-group-id="6324692187-6">(</span><span·class="mi">3</span><span·class="p">,</span><span·class="n">P</span><span·class="p"·data-group-id="6324692187-6">)</span><span·class="p">.</span><span·class="w"> |
| 331 | </span><span·class="p"·data-group-id=" | 331 | </span><span·class="p"·data-group-id="6324692187-7">{</span><span·class="ss">july</span><span·class="p">,</span><span·class="mi">29</span><span·class="p"·data-group-id="6324692187-7">}</span><span·class="gp·unselectable"> |
| 332 | 4>·</span><span·class="n">P2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">setelement</span><span·class="p"·data-group-id=" | 332 | 4>·</span><span·class="n">P2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">setelement</span><span·class="p"·data-group-id="6324692187-8">(</span><span·class="mi">2</span><span·class="p">,</span><span·class="n">P</span><span·class="p">,</span><span·class="mi">25</span><span·class="p"·data-group-id="6324692187-8">)</span><span·class="p">.</span><span·class="w"> |
| 333 | </span><span·class="p"·data-group-id=" | 333 | </span><span·class="p"·data-group-id="6324692187-9">{</span><span·class="ss">adam</span><span·class="p">,</span><span·class="mi">25</span><span·class="p">,</span><span·class="p"·data-group-id="6324692187-10">{</span><span·class="ss">july</span><span·class="p">,</span><span·class="mi">29</span>[·...·truncated·by·diffoscope;·len:·95,·SHA:·b68e264253344a388dc6e8bec013adec2f09151b842966b17c11a2af1c0803f0·...·]-9">}</span><span·class="gp·unselectable"> |
| 334 | 5>·</span><span·class="nf">tuple_size</span><span·class="p"·data-group-id=" | 334 | 5>·</span><span·class="nf">tuple_size</span><span·class="p"·data-group-id="6324692187-11">(</span><span·class="n">P</span><span·class="p"·data-group-id="6324692187-11">)</span><span·class="p">.</span><span·class="w"> |
| 335 | </span><span·class="mi">3</span><span·class="gp·unselectable"> | 335 | </span><span·class="mi">3</span><span·class="gp·unselectable"> |
| 336 | 6>·</span><span·class="nf">tuple_size</span><span·class="p"·data-group-id=" | 336 | 6>·</span><span·class="nf">tuple_size</span><span·class="p"·data-group-id="6324692187-12">(</span><span·class="p"·data-group-id="6324692187-13">{</span><span·class="p"·data-group-id="6324692187-13">}</span><span·class="p"·data-group-id="6324692187-12">)</span><span·class="p">.</span><span·class="w"> |
| 337 | </span><span·class="mi">0</span><span·class="gp·unselectable"> | 337 | </span><span·class="mi">0</span><span·class="gp·unselectable"> |
| 338 | 7>·</span><span·class="nf">is_tuple</span><span·class="p"·data-group-id=" | 338 | 7>·</span><span·class="nf">is_tuple</span><span·class="p"·data-group-id="6324692187-14">(</span><span·class="p"·data-group-id="6324692187-15">{</span><span·class="ss">a</span><span·class="p">,</span><span·class="ss">b</span><span·class="p">,</span><span·class="ss">c</span><span·class="p"·data-group-id="6324692187-15">}</span><s[·...·truncated·by·diffoscope;·len:·39,·SHA:·948cb1c87829f1a9dfb806e71c0696ebf10e85869fde3ae8eb25526599d43c11·...·]-14">)</span><span·class="p">.</span><span·class="w"> |
| 339 | </span><span·class="ss">true</span></code></pre><h2·id="map"·class="section-heading"> | 339 | </span><span·class="ss">true</span></code></pre><h2·id="map"·class="section-heading"> |
| 340 | ··<a·href="#map"·class="hover-link"> | 340 | ··<a·href="#map"·class="hover-link"> |
| 341 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 341 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 342 | ··</a> | 342 | ··</a> |
| 343 | ··<span·class="text">Map</span> | 343 | ··<span·class="text">Map</span> |
| 344 | </h2> | 344 | </h2> |
| 345 | <p>A·map·is·a·compound·data·type·with·a·variable·number·of·key-value·associations:</p><pre><code·class="text">#{Key1·=>·Value1,·...,·KeyN·=>·ValueN}</code></pre><p>Each·key-value·association·in·the·map·is·called·an·<em>association·pair</em>.·The·key | 345 | <p>A·map·is·a·compound·data·type·with·a·variable·number·of·key-value·associations:</p><pre><code·class="text">#{Key1·=>·Value1,·...,·KeyN·=>·ValueN}</code></pre><p>Each·key-value·association·in·the·map·is·called·an·<em>association·pair</em>.·The·key |
| 346 | and·value·parts·of·the·pair·are·called·<em>elements</em>.·The·number·of·association | 346 | and·value·parts·of·the·pair·are·called·<em>elements</em>.·The·number·of·association |
| 347 | pairs·is·said·to·be·the·<em>size</em>·of·the·map.</p><p>There·exists·a·number·of·BIFs·to·manipulate·maps.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">M1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 347 | pairs·is·said·to·be·the·<em>size</em>·of·the·map.</p><p>There·exists·a·number·of·BIFs·to·manipulate·maps.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">M1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="8584659540-1">#{</span><span·class="ss">name</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">adam</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">age</span><span·class="w">·</span><s[·...·truncated·by·diffoscope;·len:·453,·SHA:·e8eb8beb0d24aeccee3a2e681085b15bc18d499eb4e11dcbff8dfbb98e4b4779·...·]-1">}</span><span·class="p">.</span><span·class="w"> |
| 348 | </span><span·class="p"·data-group-id=" | 348 | </span><span·class="p"·data-group-id="8584659540-3">#{</span><span·class="ss">age</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">24</span><span·class="p">,</span><span·class="ss">date</span><span·class="w">·</span><span·class="p">=></span>[·...·truncated·by·diffoscope;·len:·405,·SHA:·c077e1cffdccc7deff2a004b0be8c5fd4bee217dccdfdef5a4603ab295445a00·...·]-3">}</span><span·class="gp·unselectable"> |
| 349 | 2>·</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">get</span><span·class="p"·data-group-id=" | 349 | 2>·</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">get</span><span·class="p"·data-group-id="8584659540-5">(</span><span·class="ss">name</span><span·class="p">,</span><span·class="w">·</span><span·class="n">M1</span><span·class="p"·data-group-id="8584659540-5">)</span><span·class="p">.</span><span·class="w"> |
| 350 | </span><span·class="ss">adam</span><span·class="gp·unselectable"> | 350 | </span><span·class="ss">adam</span><span·class="gp·unselectable"> |
| 351 | 3>·</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">get</span><span·class="p"·data-group-id=" | 351 | 3>·</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">get</span><span·class="p"·data-group-id="8584659540-6">(</span><span·class="ss">date</span><span·class="p">,</span><span·class="w">·</span><span·class="n">M1</span><span·class="p"·data-group-id="8584659540-6">)</span><span·class="p">.</span><span·class="w"> |
| 352 | </span><span·class="p"·data-group-id=" | 352 | </span><span·class="p"·data-group-id="8584659540-7">{</span><span·class="ss">july</span><span·class="p">,</span><span·class="mi">29</span><span·class="p"·data-group-id="8584659540-7">}</span><span·class="gp·unselectable"> |
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| 152 | the·code·for·a·process·in·a·generic·part·(a·behaviour·module)·and·a·specific | 152 | the·code·for·a·process·in·a·generic·part·(a·behaviour·module)·and·a·specific |
| 153 | part·(a·<em>callback·module</em>).</p><p>The·behaviour·module·is·part·of·Erlang/OTP.·To·implement·a·process·such·as·a | 153 | part·(a·<em>callback·module</em>).</p><p>The·behaviour·module·is·part·of·Erlang/OTP.·To·implement·a·process·such·as·a |
| 154 | supervisor,·the·user·only·needs·to·implement·the·callback·module,·which·is·to | 154 | supervisor,·the·user·only·needs·to·implement·the·callback·module,·which·is·to |
| 155 | export·a·pre-defined·set·of·functions,·the·<em>callback·functions</em>.</p><p>The·following·example·illustrate·how·code·can·be·divided·into·a·generic·and·a | 155 | export·a·pre-defined·set·of·functions,·the·<em>callback·functions</em>.</p><p>The·following·example·illustrate·how·code·can·be·divided·into·a·generic·and·a |
| 156 | specific·part.·Consider·the·following·code·(written·in·plain·Erlang)·for·a | 156 | specific·part.·Consider·the·following·code·(written·in·plain·Erlang)·for·a |
| 157 | simple·server,·which·keeps·track·of·a·number·of·"channels".·Other·processes·can | 157 | simple·server,·which·keeps·track·of·a·number·of·"channels".·Other·processes·can |
| 158 | allocate·and·free·the·channels·by·calling·the·functions·<code·class="inline">alloc/0</code>·and·<code·class="inline">free/1</code>, | 158 | allocate·and·free·the·channels·by·calling·the·functions·<code·class="inline">alloc/0</code>·and·<code·class="inline">free/1</code>, |
| 159 | respectively.</p><p><a·href=""·id="ch1"></a></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="72 | 159 | respectively.</p><p><a·href=""·id="ch1"></a></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="9072358945-1">(</span><span·class="ss">ch1</span><span·class="p"·data-group-id="9072358945-1">)</span><span·class="p">.</span><span·class="w"> |
| 160 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="72 | 160 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="9072358945-2">(</span><span·class="p"·data-group-id="9072358945-3">[</span><span·class="ss">start</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data-group-id="9072358945-3">]</span><span·class="p"·data-group-id="9072358945-2">)</span><span·class="p">.</span><span·class="w"> |
| 161 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="72 | 161 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="9072358945-4">(</span><span·class="p"·data-group-id="9072358945-5">[</span><span·class="ss">alloc</span><span·class="p">/</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">free</span><span·class="p">/</span><sp[·...·truncated·by·diffoscope;·len:·116,·SHA:·db25e2dc12833aa354e0d087630eaaee4cc65b552f577851f10fe69e47c73627·...·]-4">)</span><span·class="p">.</span><span·class="w"> |
| 162 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="72 | 162 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="9072358945-6">(</span><span·class="p"·data-group-id="9072358945-7">[</span><span·class="ss">init</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data-group-id="9072358945-7">]</span><span·class="p"·data-group-id="9072358945-6">)</span><span·class="p">.</span><span·class="w"> |
| 163 | </span><span·class="nf">start</span><span·class="p"·data-group-id="72 | 163 | </span><span·class="nf">start</span><span·class="p"·data-group-id="9072358945-8">(</span><span·class="p"·data-group-id="9072358945-8">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 164 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id="72 | 164 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id="9072358945-9">(</span><span·class="ss">ch1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">init</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9072358945-10">[</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·66,·SHA:·021ff8dc7c66e867b993ae62ca707d7e38cdbb1a95214fe31dccff5704726f0e·...·]-9">)</span><span·class="p">.</span><span·class="w"> |
| 165 | </span><span·class="nf">alloc</span><span·class="p"·data-group-id="72 | 165 | </span><span·class="nf">alloc</span><span·class="p"·data-group-id="9072358945-11">(</span><span·class="p"·data-group-id="9072358945-11">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 166 | ····</span><span·class="ss">ch1</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="72 | 166 | ····</span><span·class="ss">ch1</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="9072358945-12">{</span><span·class="nf">self</span><span·class="p"·data-group-id="9072358945-13">(</span><span·class="p"·data-group-id="9072358945-13">)</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">alloc</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·21,·SHA:·6cf314bcec25684678ff02ccd6a6d6924711a99c79680f8a658b7a719b60f0c4·...·]-12">}</span><span·class="p">,</span><span·class="w"> |
| 167 | ····</span><span·class="k">receive</span><span·class="w"> | 167 | ····</span><span·class="k">receive</span><span·class="w"> |
| 168 | ········</span><span·class="p"·data-group-id="72 | 168 | ········</span><span·class="p"·data-group-id="9072358945-14">{</span><span·class="ss">ch1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Res</span><span·class="p"·data-group-id="9072358945-14">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 169 | ············</span><span·class="n">Res</span><span·class="w"> | 169 | ············</span><span·class="n">Res</span><span·class="w"> |
| 170 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 170 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 171 | </span><span·class="nf">free</span><span·class="p"·data-group-id="72 | 171 | </span><span·class="nf">free</span><span·class="p"·data-group-id="9072358945-15">(</span><span·class="n">Ch</span><span·class="p"·data-group-id="9072358945-15">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 172 | ····</span><span·class="ss">ch1</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="72 | 172 | ····</span><span·class="ss">ch1</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="9072358945-16">{</span><span·class="ss">free</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ch</span><span·class="p"·data-group-id="9072358945-16">}</span><span·class="p">,</span><span·class="w"> |
| 173 | ····</span><span·class="ss">ok</span><span·class="p">.</span><span·class="w"> | 173 | ····</span><span·class="ss">ok</span><span·class="p">.</span><span·class="w"> |
| 174 | </span><span·class="nf">init</span><span·class="p"·data-group-id="72 | 174 | </span><span·class="nf">init</span><span·class="p"·data-group-id="9072358945-17">(</span><span·class="p"·data-group-id="9072358945-17">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 175 | ····</span><span·class="nf">register</span><span·class="p"·data-group-id="72 | 175 | ····</span><span·class="nf">register</span><span·class="p"·data-group-id="9072358945-18">(</span><span·class="ss">ch1</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="9072358945-19">(</span><span·class="p"·data-group-id="9072358945-19">)</span><span·class="p"·data-g[·...·truncated·by·diffoscope;·len:·19,·SHA:·53a94670e029203e88ce3bba27e421abe382a9611de4cd49b38d5da3cbcf60d9·...·]-18">)</span><span·class="p">,</span><span·class="w"> |
| 176 | ····</span><span·class="n">Chs</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">channels</span><span·class="p"·data-group-id="72 | 176 | ····</span><span·class="n">Chs</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">channels</span><span·class="p"·data-group-id="9072358945-20">(</span><span·class="p"·data-group-id="9072358945-20">)</span><span·class="p">,</span><span·class="w"> |
| 177 | ····</span><span·class="nf">loop</span><span·class="p"·data-group-id="72 | 177 | ····</span><span·class="nf">loop</span><span·class="p"·data-group-id="9072358945-21">(</span><span·class="n">Chs</span><span·class="p"·data-group-id="9072358945-21">)</span><span·class="p">.</span><span·class="w"> |
| 178 | </span><span·class="nf">loop</span><span·class="p"·data-group-id="72 | 178 | </span><span·class="nf">loop</span><span·class="p"·data-group-id="9072358945-22">(</span><span·class="n">Chs</span><span·class="p"·data-group-id="9072358945-22">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 179 | ····</span><span·class="k">receive</span><span·class="w"> | 179 | ····</span><span·class="k">receive</span><span·class="w"> |
| 180 | ········</span><span·class="p"·data-group-id="72 | 180 | ········</span><span·class="p"·data-group-id="9072358945-23">{</span><span·class="n">From</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">alloc</span><span·class="p"·data-group-id="9072358945-23">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 181 | ············</span><span·class="p"·data-group-id="72 | 181 | ············</span><span·class="p"·data-group-id="9072358945-24">{</span><span·class="n">Ch</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Chs2</span><span·class="p"·data-group-id="9072358945-24">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·c[·...·truncated·by·diffoscope;·len:·143,·SHA:·cb338e2b62fc6aea79f95ab6f2789a57dd428dd3edd9820ea6fcdb76aa9bd30a·...·]-25">)</span><span·class="p">,</span><span·class="w"> |
| 182 | ············</span><span·class="n">From</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="72 | 182 | ············</span><span·class="n">From</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="9072358945-26">{</span><span·class="ss">ch1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ch</span><span·class="p"·data-group-id="9072358945-26">}</span><span·class="p">,</span><span·class="w"> |
| 183 | ············</span><span·class="nf">loop</span><span·class="p"·data-group-id="72 | 183 | ············</span><span·class="nf">loop</span><span·class="p"·data-group-id="9072358945-27">(</span><span·class="n">Chs2</span><span·class="p"·data-group-id="9072358945-27">)</span><span·class="p">;</span><span·class="w"> |
| 184 | ········</span><span·class="p"·data-group-id="72 | 184 | ········</span><span·class="p"·data-group-id="9072358945-28">{</span><span·class="ss">free</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ch</span><span·class="p"·data-group-id="9072358945-28">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 185 | ············</span><span·class="n">Chs2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">free</span><span·class="p"·data-group-id="72 | 185 | ············</span><span·class="n">Chs2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">free</span><span·class="p"·data-group-id="9072358945-29">(</span><span·class="n">Ch</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Chs</span><span·class="p"·data-group-id="9072358945-29">)</span><span·class="p">,</span><span·class="w"> |
| 186 | ············</span><span·class="nf">loop</span><span·class="p"·data-group-id="72 | 186 | ············</span><span·class="nf">loop</span><span·class="p"·data-group-id="9072358945-30">(</span><span·class="n">Chs2</span><span·class="p"·data-group-id="9072358945-30">)</span><span·class="w"> |
| 187 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>The·code·for·the·server·can·be·rewritten·into·a·generic·part·<code·class="inline">server.erl</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 187 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>The·code·for·the·server·can·be·rewritten·into·a·generic·part·<code·class="inline">server.erl</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="8390760375-1">(</span><span·class="ss">server</span><span·class="p"·data-group-id="8390760375-1">)</span><span·class="p">.</span><span·class="w"> |
| 188 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 188 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="8390760375-2">(</span><span·class="p"·data-group-id="8390760375-3">[</span><span·class="ss">start</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id="8390760375-3">]</span><span·class="p"·data-group-id="8390760375-2">)</span><span·class="p">.</span><span·class="w"> |
| 189 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 189 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="8390760375-4">(</span><span·class="p"·data-group-id="8390760375-5">[</span><span·class="ss">call</span><span·class="p">/</span><span·class="mi">2</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">cast</span><span·class="p">/</span><spa[·...·truncated·by·diffoscope;·len:·115,·SHA:·1dbd27c6025dc933eac9645d5d54bab0bdaa65152a71b472ef94db71b9b81c53·...·]-4">)</span><span·class="p">.</span><span·class="w"> |
| 190 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 190 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="8390760375-6">(</span><span·class="p"·data-group-id="8390760375-7">[</span><span·class="ss">init</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id="8390760375-7">]</span><span·class="p"·data-group-id="8390760375-6">)</span><span·class="p">.</span><span·class="w"> |
| 191 | </span><span·class="nf">start</span><span·class="p"·data-group-id=" | 191 | </span><span·class="nf">start</span><span·class="p"·data-group-id="8390760375-8">(</span><span·class="n">Mod</span><span·class="p"·data-group-id="8390760375-8">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 192 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id=" | 192 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id="8390760375-9">(</span><span·class="ss">server</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">init</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8390760375-10">[</span><span·class="n">Mod</span>[·...·truncated·by·diffoscope;·len:·95,·SHA:·786c50c175fa739924d880461cc08643e438729381f3f19028933810ea7f5965·...·]-9">)</span><span·class="p">.</span><span·class="w"> |
| 193 | </span><span·class="nf">call</span><span·class="p"·data-group-id=" | 193 | </span><span·class="nf">call</span><span·class="p"·data-group-id="8390760375-11">(</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Req</span><span·class="p"·data-group-id="8390760375-11">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 194 | ····</span><span·class="n">Name</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 194 | ····</span><span·class="n">Name</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="8390760375-12">{</span><span·class="ss">call</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="8390760375-13">(</span><span·class="p"·data-group-id="8390760375-13">)</span><span·class="p">,</sp[·...·truncated·by·diffoscope;·len:·94,·SHA:·5686d1e534b71e333751dfedf058ef99079ee19cd5908da7eb9d27f4844d74df·...·]-12">}</span><span·class="p">,</span><span·class="w"> |
| 195 | ····</span><span·class="k">receive</span><span·class="w"> | 195 | ····</span><span·class="k">receive</span><span·class="w"> |
| 196 | ········</span><span·class="p"·data-group-id=" | 196 | ········</span><span·class="p"·data-group-id="8390760375-14">{</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Res</span><span·class="p"·data-group-id="8390760375-14">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 197 | ············</span><span·class="n">Res</span><span·class="w"> | 197 | ············</span><span·class="n">Res</span><span·class="w"> |
| 198 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 198 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 199 | </span><span·class="nf">cast</span><span·class="p"·data-group-id=" | 199 | </span><span·class="nf">cast</span><span·class="p"·data-group-id="8390760375-15">(</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Req</span><span·class="p"·data-group-id="8390760375-15">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 200 | ····</span><span·class="n">Name</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 200 | ····</span><span·class="n">Name</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="8390760375-16">{</span><span·class="ss">cast</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Req</span><span·class="p"·data-group-id="8390760375-16">}</span><span·class="p">,</span><span·class="w"> |
| 201 | ····</span><span·class="ss">ok</span><span·class="p">.</span><span·class="w"> | 201 | ····</span><span·class="ss">ok</span><span·class="p">.</span><span·class="w"> |
| 202 | </span><span·class="nf">init</span><span·class="p"·data-group-id=" | 202 | </span><span·class="nf">init</span><span·class="p"·data-group-id="8390760375-17">(</span><span·class="n">Mod</span><span·class="p"·data-group-id="8390760375-17">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 203 | ····</span><span·class="nf">register</span><span·class="p"·data-group-id=" | 203 | ····</span><span·class="nf">register</span><span·class="p"·data-group-id="8390760375-18">(</span><span·class="n">Mod</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="8390760375-19">(</span><span·class="p"·data-group-id="8390760375-19">)</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·18,·SHA:·584c61b752e77375ba9e3ef4c074d7830c82c7a6c4b598a1da427051f07a9dcd·...·]-18">)</span><span·class="p">,</span><span·class="w"> |
| 204 | ····</span><span·class="n">State</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Mod</span><span·class="p">:</span><span·class="nf">init</span><span·class="p"·data-group-id=" | 204 | ····</span><span·class="n">State</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Mod</span><span·class="p">:</span><span·class="nf">init</span><span·class="p"·data-group-id="8390760375-20">(</span><span·class="p"·data-group-id="8390760375-20">)</span><span·class="p">,</span><span·class="w"> |
| 205 | ····</span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 205 | ····</span><span·class="nf">loop</span><span·class="p"·data-group-id="8390760375-21">(</span><span·class="n">Mod</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="p"·data-group-id="8390760375-21">)</span><span·class="p">.</span><span·class="w"> |
| 206 | </span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 206 | </span><span·class="nf">loop</span><span·class="p"·data-group-id="8390760375-22">(</span><span·class="n">Mod</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="p"·data-group-id="8390760375-22">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 207 | ····</span><span·class="k">receive</span><span·class="w"> | 207 | ····</span><span·class="k">receive</span><span·class="w"> |
| 208 | ········</span><span·class="p"·data-group-id=" | 208 | ········</span><span·class="p"·data-group-id="8390760375-23">{</span><span·class="ss">call</span><span·class="p">,</span><span·class="w">·</span><span·class="n">From</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Req</span><span·class="p"·data-group-id="8390760375-23">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 209 | ············</span><span·class="p"·data-group-id=" | 209 | ············</span><span·class="p"·data-group-id="8390760375-24">{</span><span·class="n">Res</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State2</span><span·class="p"·data-group-id="8390760375-24">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><spa[·...·truncated·by·diffoscope;·len:·278,·SHA:·b41f683617258abe0e7a189452e848d66df86d9095bd0aa849d6dd8452450f9c·...·]-25">)</span><span·class="p">,</span><span·class="w"> |
| 210 | ············</span><span·class="n">From</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 210 | ············</span><span·class="n">From</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="8390760375-26">{</span><span·class="n">Mod</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Res</span><span·class="p"·data-group-id="8390760375-26">}</span><span·class="p">,</span><span·class="w"> |
| 211 | ············</span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 211 | ············</span><span·class="nf">loop</span><span·class="p"·data-group-id="8390760375-27">(</span><span·class="n">Mod</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State2</span><span·class="p"·data-group-id="8390760375-27">)</span><span·class="p">;</span><span·class="w"> |
| 212 | ········</span><span·class="p"·data-group-id=" | 212 | ········</span><span·class="p"·data-group-id="8390760375-28">{</span><span·class="ss">cast</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Req</span><span·class="p"·data-group-id="8390760375-28">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 213 | ············</span><span·class="n">State2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Mod</span><span·class="p">:</span><span·class="nf">handle_cast</span><span·class="p"·data-group-id=" | 213 | ············</span><span·class="n">State2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Mod</span><span·class="p">:</span><span·class="nf">handle_cast</span><span·class="p"·data-group-id="8390760375-29">(</span><span·class="n">Req</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="p"·data-group-id="8390760375-29">)</span><span·class="p">,</span><span·class="w"> |
| 214 | ············</span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 214 | ············</span><span·class="nf">loop</span><span·class="p"·data-group-id="8390760375-30">(</span><span·class="n">Mod</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State2</span><span·class="p"·data-group-id="8390760375-30">)</span><span·class="w"> |
| 215 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>And·a·callback·module·<code·class="inline">ch2.erl</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 215 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>And·a·callback·module·<code·class="inline">ch2.erl</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="2654843687-1">(</span><span·class="ss">ch2</span><span·class="p"·data-group-id="2654843687-1">)</span><span·class="p">.</span><span·class="w"> |
| 216 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 216 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="2654843687-2">(</span><span·class="p"·data-group-id="2654843687-3">[</span><span·class="ss">start</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data-group-id="2654843687-3">]</span><span·class="p"·data-group-id="2654843687-2">)</span><span·class="p">.</span><span·class="w"> |
| 217 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 217 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="2654843687-4">(</span><span·class="p"·data-group-id="2654843687-5">[</span><span·class="ss">alloc</span><span·class="p">/</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">free</span><span·class="p">/</span><sp[·...·truncated·by·diffoscope;·len:·116,·SHA:·e025ff5f8d20cdfb2a54e4874bb9567b4cbd90ab48fdd319c9131a5fcce771f1·...·]-4">)</span><span·class="p">.</span><span·class="w"> |
| 218 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 218 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="2654843687-6">(</span><span·class="p"·data-group-id="2654843687-7">[</span><span·class="ss">init</span><span·class="p">/</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">handle_call</span><span·class="p">/</sp[·...·truncated·by·diffoscope;·len:·254,·SHA:·a5042cc734fad62d542cf918fa9372569c86b582a9a6c4db2911af4a1f717fb8·...·]-6">)</span><span·class="p">.</span><span·class="w"> |
| 219 | </span><span·class="nf">start</span><span·class="p"·data-group-id=" | 219 | </span><span·class="nf">start</span><span·class="p"·data-group-id="2654843687-8">(</span><span·class="p"·data-group-id="2654843687-8">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 220 | ····</span><span·class="nc">server</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 220 | ····</span><span·class="nc">server</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="2654843687-9">(</span><span·class="ss">ch2</span><span·class="p"·data-group-id="2654843687-9">)</span><span·class="p">.</span><span·class="w"> |
| 221 | </span><span·class="nf">alloc</span><span·class="p"·data-group-id=" | 221 | </span><span·class="nf">alloc</span><span·class="p"·data-group-id="2654843687-10">(</span><span·class="p"·data-group-id="2654843687-10">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 222 | ····</span><span·class="nc">server</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id=" | 222 | ····</span><span·class="nc">server</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id="2654843687-11">(</span><span·class="ss">ch2</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">alloc</span><span·class="p"·data-group-id="2654843687-11">)</span><span·class="p">.</span><span·class="w"> |
| 223 | </span><span·class="nf">free</span><span·class="p"·data-group-id=" | 223 | </span><span·class="nf">free</span><span·class="p"·data-group-id="2654843687-12">(</span><span·class="n">Ch</span><span·class="p"·data-group-id="2654843687-12">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 224 | ····</span><span·class="nc">server</span><span·class="p">:</span><span·class="nf">cast</span><span·class="p"·data-group-id=" | 224 | ····</span><span·class="nc">server</span><span·class="p">:</span><span·class="nf">cast</span><span·class="p"·data-group-id="2654843687-13">(</span><span·class="ss">ch2</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2654843687-14">{</span><span·class="ss">free</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ch</span><sp[·...·truncated·by·diffoscope;·len:·92,·SHA:·b0ff2c108e5b2e36854757868a1da03e51fec358321aae9ff59a0093138743bc·...·]-13">)</span><span·class="p">.</span><span·class="w"> |
| 225 | </span><span·class="nf">init</span><span·class="p"·data-group-id=" | 225 | </span><span·class="nf">init</span><span·class="p"·data-group-id="2654843687-15">(</span><span·class="p"·data-group-id="2654843687-15">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 226 | ····</span><span·class="nf">channels</span><span·class="p"·data-group-id=" | 226 | ····</span><span·class="nf">channels</span><span·class="p"·data-group-id="2654843687-16">(</span><span·class="p"·data-group-id="2654843687-16">)</span><span·class="p">.</span><span·class="w"> |
| 227 | </span><span·class="nf">handle_call</span><span·class="p"·data-group-id=" | 227 | </span><span·class="nf">handle_call</span><span·class="p"·data-group-id="2654843687-17">(</span><span·class="ss">alloc</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Chs</span><span·class="p"·data-group-id="2654843687-17">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 228 | ····</span><span·class="nf">alloc</span><span·class="p"·data-group-id=" | 228 | ····</span><span·class="nf">alloc</span><span·class="p"·data-group-id="2654843687-18">(</span><span·class="n">Chs</span><span·class="p"·data-group-id="2654843687-18">)</span><span·class="p">.</span><span·class="w">·</span><span·class="c1">%·=>·{Ch,Chs2}</span><span·class="w"> |
| 229 | </span><span·class="nf">handle_cast</span><span·class="p"·data-group-id=" | 229 | </span><span·class="nf">handle_cast</span><span·class="p"·data-group-id="2654843687-19">(</span><span·class="p"·data-group-id="2654843687-20">{</span><span·class="ss">free</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ch</span><span·class="p"·data-group-id="2654843687-20">}</span><span·class="p">,</span>[·...·truncated·by·diffoscope;·len:·91,·SHA:·c9585fea823e3f97c92e24082079594966f840734e071ebdf67c880222b76729·...·]-19">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 230 | ····</span><span·class="nf">free</span><span·class="p"·data-group-id=" | 230 | ····</span><span·class="nf">free</span><span·class="p"·data-group-id="2654843687-21">(</span><span·class="n">Ch</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Chs</span><span·class="p"·data-group-id="2654843687-21">)</span><span·class="p">.</span><span·class="w">·</span><span·class="c1">%·=>·Chs2</span></code></pre><p>Notice·the·following:</p><ul><li>The·code·in·<code·class="inline">server</code>·can·be·reused·to·build·many·different·servers.</li><li>The·server·name,·in·this·example·the·atom·<code·class="inline">ch2</code>,·is·hidden·from·the·users·of |
| 231 | the·client·functions.·This·means·that·the·name·can·be·changed·without | 231 | the·client·functions.·This·means·that·the·name·can·be·changed·without |
| 232 | affecting·them.</li><li>The·protocol·(messages·sent·to·and·received·from·the·server)·is·also·hidden. | 232 | affecting·them.</li><li>The·protocol·(messages·sent·to·and·received·from·the·server)·is·also·hidden. |
| 233 | This·is·good·programming·practice·and·allows·one·to·change·the·protocol | 233 | This·is·good·programming·practice·and·allows·one·to·change·the·protocol |
| 234 | without·changing·the·code·using·the·interface·functions.</li><li>The·functionality·of·<code·class="inline">server</code>·can·be·extended·without·having·to·change·<code·class="inline">ch2</code> | 234 | without·changing·the·code·using·the·interface·functions.</li><li>The·functionality·of·<code·class="inline">server</code>·can·be·extended·without·having·to·change·<code·class="inline">ch2</code> |
| 235 | or·any·other·callback·module.</li></ul><p>In·<code·class="inline">ch1.erl</code>·and·<code·class="inline">ch2.erl</code>·above,·the·implementation·of·<code·class="inline">channels/0</code>,·<code·class="inline">alloc/1</code>, | 235 | or·any·other·callback·module.</li></ul><p>In·<code·class="inline">ch1.erl</code>·and·<code·class="inline">ch2.erl</code>·above,·the·implementation·of·<code·class="inline">channels/0</code>,·<code·class="inline">alloc/1</code>, |
| 236 | and·<code·class="inline">free/2</code>·has·been·intentionally·left·out,·as·it·is·not·relevant·to·the | 236 | and·<code·class="inline">free/2</code>·has·been·intentionally·left·out,·as·it·is·not·relevant·to·the |
| 237 | example.·For·completeness,·one·way·to·write·these·functions·is·given·below.·This | 237 | example.·For·completeness,·one·way·to·write·these·functions·is·given·below.·This |
| 238 | is·an·example·only,·a·realistic·implementation·must·be·able·to·handle·situations | 238 | is·an·example·only,·a·realistic·implementation·must·be·able·to·handle·situations |
| 239 | like·running·out·of·channels·to·allocate,·and·so·on.</p><p><a·href=""·id="channels-implementation"></a></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">channels</span><span·class="p"·data-group-id=" | 239 | like·running·out·of·channels·to·allocate,·and·so·on.</p><p><a·href=""·id="channels-implementation"></a></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">channels</span><span·class="p"·data-group-id="3328187582-1">(</span><span·class="p"·data-group-id="3328187582-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 240 | ···</span><span·class="p"·data-group-id=" | 240 | ···</span><span·class="p"·data-group-id="3328187582-2">{</span><span·class="p">_</span><span·class="n">Allocated</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="3328187582-3">[</span><span·class="p"·data-group-id="3328187582-3">]</span>[·...·truncated·by·diffoscope;·len:·498,·SHA:·cdd26517d6777c65ad3e9c25745cbf6d6c2e7d2e9c5f2a611d102182322180f3·...·]-2">}</span><span·class="p">.</span><span·class="w"> |
| 241 | </span><span·class="nf">alloc</span><span·class="p"·data-group-id=" | 241 | </span><span·class="nf">alloc</span><span·class="p"·data-group-id="3328187582-5">(</span><span·class="p"·data-group-id="3328187582-6">{</span><span·class="n">Allocated</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3328187582-7">[</span><span·class="n">H</span><span·class="p">|</span>[·...·truncated·by·diffoscope;·len:·294,·SHA:·f813e7410bc55cdca26961d11c385ec8136efe7344da05f13d72d93e0595137b·...·]-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 242 | ···</span><span·class="p"·data-group-id=" | 242 | ···</span><span·class="p"·data-group-id="3328187582-8">{</span><span·class="n">H</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3328187582-9">{</span><span·class="p"·data-group-id="3328187582-10">[</span><span·class="n">H</span><span·class="p">|</span><span·c[·...·truncated·by·diffoscope;·len:·245,·SHA:·ca18c3d5fd8ecdc762fb995be9f609136b48cfc49a9aa364da48ab829e0c18c8·...·]-8">}</span><span·class="p">.</span><span·class="w"> |
| 243 | </span><span·class="nf">free</span><span·class="p"·data-group-id=" | 243 | </span><span·class="nf">free</span><span·class="p"·data-group-id="3328187582-11">(</span><span·class="n">Ch</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3328187582-12">{</span><span·class="n">Alloc</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Free</span><sp[·...·truncated·by·diffoscope;·len:·195,·SHA:·ce6701c59f3da38ff5a727764218efb5bba5a7b0fb893e12d0858b41e2be5002·...·]-11">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 244 | ···</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">member</span><span·class="p"·data-group-id=" | 244 | ···</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">member</span><span·class="p"·data-group-id="3328187582-13">(</span><span·class="n">Ch</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Alloc</span><span·class="p"·data-group-id="3328187582-13">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 245 | ······</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 245 | ······</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 246 | ·········</span><span·class="p"·data-group-id=" | 246 | ·········</span><span·class="p"·data-group-id="3328187582-14">{</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">delete</span><span·class="p"·data-group-id="3328187582-15">(</span><span·class="n">Ch</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Alloc</[·...·truncated·by·diffoscope;·len:·332,·SHA:·8dac31125e2bcfd194332156af05d8e433e98b4385cd94546ca597e6a27fbb29·...·]-14">}</span><span·class="p">;</span><span·class="w"> |
| 247 | ······</span><span·class="ss">false</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 247 | ······</span><span·class="ss">false</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 248 | ·········</span><span·class="n">Channels</span><span·class="w"> | 248 | ·········</span><span·class="n">Channels</span><span·class="w"> |
| 249 | ···</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>Code·written·without·using·behaviours·can·be·more·efficient,·but·the·increased | 249 | ···</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>Code·written·without·using·behaviours·can·be·more·efficient,·but·the·increased |
| 250 | efficiency·is·at·the·expense·of·generality.·The·ability·to·manage·all | 250 | efficiency·is·at·the·expense·of·generality.·The·ability·to·manage·all |
| 251 | applications·in·the·system·in·a·consistent·manner·is·important.</p><p>Using·behaviours·also·makes·it·easier·to·read·and·understand·code·written·by | 251 | applications·in·the·system·in·a·consistent·manner·is·important.</p><p>Using·behaviours·also·makes·it·easier·to·read·and·understand·code·written·by |
| 252 | other·programmers.·Improvised·programming·structures,·while·possibly·more | 252 | other·programmers.·Improvised·programming·structures,·while·possibly·more |
| 253 | efficient,·are·always·more·difficult·to·understand.</p><p>The·<code·class="inline">server</code>·module·corresponds,·greatly·simplified,·to·the·Erlang/OTP·behaviour | 253 | efficient,·are·always·more·difficult·to·understand.</p><p>The·<code·class="inline">server</code>·module·corresponds,·greatly·simplified,·to·the·Erlang/OTP·behaviour |
| 254 | <code·class="inline">gen_server</code>.</p><p>The·standard·Erlang/OTP·behaviours·are:</p><ul><li><p><a·href="gen_server_concepts.html">gen_server</a></p><p>For·implementing·the·server·of·a·client-server·relation</p></li><li><p><a·href="statem.html">gen_statem</a></p><p>For·implementing·state·machines</p></li><li><p><a·href="events.html">gen_event</a></p><p>For·implementing·event·handling·functionality</p></li><li><p><a·href="sup_princ.html">supervisor</a></p><p>For·implementing·a·supervisor·in·a·supervision·tree</p></li></ul><p>The·compiler·understands·the·module·attribute·<code·class="inline">-behaviour(Behaviour)</code>·and·issues | 254 | <code·class="inline">gen_server</code>.</p><p>The·standard·Erlang/OTP·behaviours·are:</p><ul><li><p><a·href="gen_server_concepts.html">gen_server</a></p><p>For·implementing·the·server·of·a·client-server·relation</p></li><li><p><a·href="statem.html">gen_statem</a></p><p>For·implementing·state·machines</p></li><li><p><a·href="events.html">gen_event</a></p><p>For·implementing·event·handling·functionality</p></li><li><p><a·href="sup_princ.html">supervisor</a></p><p>For·implementing·a·supervisor·in·a·supervision·tree</p></li></ul><p>The·compiler·understands·the·module·attribute·<code·class="inline">-behaviour(Behaviour)</code>·and·issues |
| 255 | warnings·about·missing·callback·functions,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 255 | warnings·about·missing·callback·functions,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="1648875977-1">(</span><span·class="ss">chs3</span><span·class="p"·data-group-id="1648875977-1">)</span><span·class="p">.</span><span·class="w"> |
| 256 | </span><span·class="p">-</span><span·class="na">behaviour</span><span·class="p"·data-group-id=" | 256 | </span><span·class="p">-</span><span·class="na">behaviour</span><span·class="p"·data-group-id="1648875977-2">(</span><span·class="ss">gen_server</span><span·class="p"·data-group-id="1648875977-2">)</span><span·class="p">.</span><span·class="w"> |
| 257 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 257 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 258 | </span><span·class="mi">3</span><span·class="o">></span><span·class="w">·</span><span·class="nf">c</span><span·class="p"·data-group-id=" | 258 | </span><span·class="mi">3</span><span·class="o">></span><span·class="w">·</span><span·class="nf">c</span><span·class="p"·data-group-id="1648875977-3">(</span><span·class="ss">chs3</span><span·class="p"·data-group-id="1648875977-3">)</span><span·class="p">.</span><span·class="w"> |
| 259 | </span><span·class="p">.</span><span·class="o">/</span><span·class="ss">chs3</span><span·class="p">.</span><span·class="nc">erl</span><span·class="p">:</span><span·class="mi">10</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Warning</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">undefined</span><span·class="w">·</span><span·class="ss">call</span><span·class="o">-</span><span·class="ss">back</span><span·class="w">·</span><span·class="ss">function</span><span·class="w">·</span><span·class="ss">handle_call</span><span·class="p">/</span><span·class="mi">3</span><span·class="w"> | 259 | </span><span·class="p">.</span><span·class="o">/</span><span·class="ss">chs3</span><span·class="p">.</span><span·class="nc">erl</span><span·class="p">:</span><span·class="mi">10</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Warning</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">undefined</span><span·class="w">·</span><span·class="ss">call</span><span·class="o">-</span><span·class="ss">back</span><span·class="w">·</span><span·class="ss">function</span><span·class="w">·</span><span·class="ss">handle_call</span><span·class="p">/</span><span·class="mi">3</span><span·class="w"> |
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| 142 | </h2> | 142 | </h2> |
| 143 | <p>A·<em>node</em>·is·an·executing·Erlang·runtime·system·that·has·been·given·a·name,·using | 143 | <p>A·<em>node</em>·is·an·executing·Erlang·runtime·system·that·has·been·given·a·name,·using |
| 144 | the·command-line·flag·<a·href="../../erts-15.2.3/doc/html/erl_cmd.html#name"><code·class="inline">-name</code></a>·(long·names)·or | 144 | the·command-line·flag·<a·href="../../erts-15.2.3/doc/html/erl_cmd.html#name"><code·class="inline">-name</code></a>·(long·names)·or |
| 145 | <a·href="../../erts-15.2.3/doc/html/erl_cmd.html#sname"><code·class="inline">-sname</code></a>·(short·names).</p><p>The·format·of·the·node·name·is·an·atom·<code·class="inline">name@host</code>.·<code·class="inline">name</code>·is·the·name·given·by | 145 | <a·href="../../erts-15.2.3/doc/html/erl_cmd.html#sname"><code·class="inline">-sname</code></a>·(short·names).</p><p>The·format·of·the·node·name·is·an·atom·<code·class="inline">name@host</code>.·<code·class="inline">name</code>·is·the·name·given·by |
| 146 | the·user.·<code·class="inline">host</code>·is·the·full·host·name·if·long·names·are·used,·or·the·first·part | 146 | the·user.·<code·class="inline">host</code>·is·the·full·host·name·if·long·names·are·used,·or·the·first·part |
| 147 | of·the·host·name·if·short·names·are·used.·Function·<a·href="../../erts-15.2.3/doc/html/erlang.html#node/0"><code·class="inline">node()</code></a> | 147 | of·the·host·name·if·short·names·are·used.·Function·<a·href="../../erts-15.2.3/doc/html/erlang.html#node/0"><code·class="inline">node()</code></a> |
| 148 | returns·the·name·of·the·node.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl·-name·dilbert</span><span·class="w"> | 148 | returns·the·name·of·the·node.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl·-name·dilbert</span><span·class="w"> |
| 149 | </span><span·class="p"·data-group-id=" | 149 | </span><span·class="p"·data-group-id="6413546302-1">(</span><span·class="ss">dilbert@uab</span><span·class="p">.</span><span·class="ss">ericsson</span><span·class="p">.</span><span·class="ss">se</span><span·class="p"·data-group-id="6413546302-1">)</span><span·class="mi">1</span><span·class="o"[·...·truncated·by·diffoscope;·len:·158,·SHA:·77133e0baac67fcab804d7448f73480318a4eccf2cd7d112aa8827de4f4af222·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 150 | </span><span·class="ss">'dilbert@uab.ericsson.se'</span><span·class="w"> | 150 | </span><span·class="ss">'dilbert@uab.ericsson.se'</span><span·class="w"> |
| 151 | </span><span·class="c1">%·erl·-sname·dilbert</span><span·class="gp·unselectable"> | 151 | </span><span·class="c1">%·erl·-sname·dilbert</span><span·class="gp·unselectable"> |
| 152 | (dilbert@uab)1>·</span><span·class="nf">node</span><span·class="p"·data-group-id=" | 152 | (dilbert@uab)1>·</span><span·class="nf">node</span><span·class="p"·data-group-id="6413546302-3">(</span><span·class="p"·data-group-id="6413546302-3">)</span><span·class="p">.</span><span·class="w"> |
| 153 | </span><span·class="ss">dilbert@uab</span></code></pre><p>The·node·name·can·also·be·given·in·runtime·by·calling·<a·href="../../lib/kernel-10.2.3/doc/html/net_kernel.html#start/1"><code·class="inline">net_kernel:start/1</code></a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl</span><span·class="gp·unselectable"> | 153 | </span><span·class="ss">dilbert@uab</span></code></pre><p>The·node·name·can·also·be·given·in·runtime·by·calling·<a·href="../../lib/kernel-10.2.3/doc/html/net_kernel.html#start/1"><code·class="inline">net_kernel:start/1</code></a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl</span><span·class="gp·unselectable"> |
| 154 | 1>·</span><span·class="nf">node</span><span·class="p"·data-group-id=" | 154 | 1>·</span><span·class="nf">node</span><span·class="p"·data-group-id="1069079810-1">(</span><span·class="p"·data-group-id="1069079810-1">)</span><span·class="p">.</span><span·class="w"> |
| 155 | </span><span·class="ss">nonode@nohost</span><span·class="gp·unselectable"> | 155 | </span><span·class="ss">nonode@nohost</span><span·class="gp·unselectable"> |
| 156 | 2>·</span><span·class="nc">net_kernel</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 156 | 2>·</span><span·class="nc">net_kernel</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="1069079810-2">(</span><span·class="p"·data-group-id="1069079810-3">[</span><span·class="ss">dilbert</span><span·class="p">,</span><span·class="ss">shortnames</span><span·class="p"·data-group-id="1069079810-3">]</span><span·class="p"·data-group-id="10690798[·...·truncated·by·diffoscope;·len:·2,·SHA:·4a44dc15364204a80fe80e9039455cc1608281820fe2b24f1e5233ade6af1dd5·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 157 | </span><span·class="p"·data-group-id=" | 157 | </span><span·class="p"·data-group-id="1069079810-4">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.102</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="1069079810-4">}</span><span·class="gp·unselectable"> |
| 158 | (dilbert@uab)3>·</span><span·class="nf">node</span><span·class="p"·data-group-id=" | 158 | (dilbert@uab)3>·</span><span·class="nf">node</span><span·class="p"·data-group-id="1069079810-5">(</span><span·class="p"·data-group-id="1069079810-5">)</span><span·class="p">.</span><span·class="w"> |
| 159 | </span><span·class="ss">dilbert@uab</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>A·node·with·a·long·node·name·cannot·communicate·with·a·node·with·a·short·node | 159 | </span><span·class="ss">dilbert@uab</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>A·node·with·a·long·node·name·cannot·communicate·with·a·node·with·a·short·node |
| 160 | name.</p></section><h2·id="node-connections"·class="section-heading"> | 160 | name.</p></section><h2·id="node-connections"·class="section-heading"> |
| 161 | ··<a·href="#node-connections"·class="hover-link"> | 161 | ··<a·href="#node-connections"·class="hover-link"> |
| 162 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 162 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 163 | ··</a> | 163 | ··</a> |
| 164 | ··<span·class="text">Node·Connections</span> | 164 | ··<span·class="text">Node·Connections</span> |
| 165 | </h2> | 165 | </h2> |
| Offset 150, 36 lines modified | Offset 150, 36 lines modified | ||
| 150 | (within·the·time-out·specified·by·<code·class="inline">sync_nodes_timeout</code>).</li><li><p><code·class="inline">sync_nodes_timeout·=·integer()·|·infinity</code>·-·Specifies·how·many·milliseconds | 150 | (within·the·time-out·specified·by·<code·class="inline">sync_nodes_timeout</code>).</li><li><p><code·class="inline">sync_nodes_timeout·=·integer()·|·infinity</code>·-·Specifies·how·many·milliseconds |
| 151 | to·wait·for·the·other·nodes·to·start.</p></li></ul><p>When·started,·the·node·waits·for·all·nodes·specified·by·<code·class="inline">sync_nodes_mandatory</code> | 151 | to·wait·for·the·other·nodes·to·start.</p></li></ul><p>When·started,·the·node·waits·for·all·nodes·specified·by·<code·class="inline">sync_nodes_mandatory</code> |
| 152 | and·<code·class="inline">sync_nodes_optional</code>·to·come·up.·When·all·nodes·are·up,·or·when·all | 152 | and·<code·class="inline">sync_nodes_optional</code>·to·come·up.·When·all·nodes·are·up,·or·when·all |
| 153 | mandatory·nodes·are·up·and·the·time·specified·by·<code·class="inline">sync_nodes_timeout</code>·has | 153 | mandatory·nodes·are·up·and·the·time·specified·by·<code·class="inline">sync_nodes_timeout</code>·has |
| 154 | elapsed,·all·applications·start.·If·not·all·mandatory·nodes·are·up,·the·node | 154 | elapsed,·all·applications·start.·If·not·all·mandatory·nodes·are·up,·the·node |
| 155 | terminates.</p><p><em>Example:</em></p><p>An·application·<code·class="inline">myapp</code>·is·to·run·at·the·node·<code·class="inline">cp1@cave</code>.·If·this·node·goes·down, | 155 | terminates.</p><p><em>Example:</em></p><p>An·application·<code·class="inline">myapp</code>·is·to·run·at·the·node·<code·class="inline">cp1@cave</code>.·If·this·node·goes·down, |
| 156 | <code·class="inline">myapp</code>·is·to·be·restarted·at·<code·class="inline">cp2@cave</code>·or·<code·class="inline">cp3@cave</code>.·A·system·configuration | 156 | <code·class="inline">myapp</code>·is·to·be·restarted·at·<code·class="inline">cp2@cave</code>·or·<code·class="inline">cp3@cave</code>.·A·system·configuration |
| 157 | file·<code·class="inline">cp1.config</code>·for·<code·class="inline">cp1@cave</code>·can·look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 157 | file·<code·class="inline">cp1.config</code>·for·<code·class="inline">cp1@cave</code>·can·look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="0859036654-1">[</span><span·class="p"·data-group-id="0859036654-2">{</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="w"> |
| 158 | ··</span><span·class="p"·data-group-id=" | 158 | ··</span><span·class="p"·data-group-id="0859036654-3">[</span><span·class="p"·data-group-id="0859036654-4">{</span><span·class="ss">distributed</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0859036654-5">[</span><span·class="p"·data-group-id="0859036654-6">[·...·truncated·by·diffoscope;·len:·712,·SHA:·81194a87e036b392e70931e0154c6c015767b3a5ffe0b422f74b2b62edfd95e8·...·]-4">}</span><span·class="p">,</span><span·class="w"> |
| 159 | ···</span><span·class="p"·data-group-id=" | 159 | ···</span><span·class="p"·data-group-id="0859036654-9">{</span><span·class="ss">sync_nodes_mandatory</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0859036654-10">[</span><span·class="ss">cp2@cave</span><span·class="p">,</span><span·class="w">·</span><span·cl[·...·truncated·by·diffoscope;·len:·119,·SHA:·9be3ba56ffb5b79b9ef9ebdc9d736d9258d0466d49ffb2c8e944b43ad915a72d·...·]-9">}</span><span·class="p">,</span><span·class="w"> |
| 160 | ···</span><span·class="p"·data-group-id=" | 160 | ···</span><span·class="p"·data-group-id="0859036654-11">{</span><span·class="ss">sync_nodes_timeout</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">5000</span><span·class="p"·data-group-id="0859036654-11">}</span><span·class="w"> |
| 161 | ··</span><span·class="p"·data-group-id=" | 161 | ··</span><span·class="p"·data-group-id="0859036654-3">]</span><span·class="w"> |
| 162 | ·</span><span·class="p"·data-group-id=" | 162 | ·</span><span·class="p"·data-group-id="0859036654-2">}</span><span·class="w"> |
| 163 | </span><span·class="p"·data-group-id=" | 163 | </span><span·class="p"·data-group-id="0859036654-1">]</span><span·class="p">.</span></code></pre><p>The·system·configuration·files·for·<code·class="inline">cp2@cave</code>·and·<code·class="inline">cp3@cave</code>·are·identical, |
| 164 | except·for·the·list·of·mandatory·nodes,·which·is·to·be·<code·class="inline">[cp1@cave,·cp3@cave]</code> | 164 | except·for·the·list·of·mandatory·nodes,·which·is·to·be·<code·class="inline">[cp1@cave,·cp3@cave]</code> |
| 165 | for·<code·class="inline">cp2@cave</code>·and·<code·class="inline">[cp1@cave,·cp2@cave]</code>·for·<code·class="inline">cp3@cave</code>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>All·involved·nodes·must·have·the·same·value·for·<code·class="inline">distributed</code>·and | 165 | for·<code·class="inline">cp2@cave</code>·and·<code·class="inline">[cp1@cave,·cp2@cave]</code>·for·<code·class="inline">cp3@cave</code>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>All·involved·nodes·must·have·the·same·value·for·<code·class="inline">distributed</code>·and |
| 166 | <code·class="inline">sync_nodes_timeout</code>.·Otherwise·the·system·behavior·is·undefined.</p></section><h2·id="starting-and-stopping-distributed-applications"·class="section-heading"> | 166 | <code·class="inline">sync_nodes_timeout</code>.·Otherwise·the·system·behavior·is·undefined.</p></section><h2·id="starting-and-stopping-distributed-applications"·class="section-heading"> |
| 167 | ··<a·href="#starting-and-stopping-distributed-applications"·class="hover-link"> | 167 | ··<a·href="#starting-and-stopping-distributed-applications"·class="hover-link"> |
| 168 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 168 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 169 | ··</a> | 169 | ··</a> |
| 170 | ··<span·class="text">Starting·and·Stopping·Distributed·Applications</span> | 170 | ··<span·class="text">Starting·and·Stopping·Distributed·Applications</span> |
| 171 | </h2> | 171 | </h2> |
| 172 | <p>When·all·involved·(mandatory)·nodes·have·been·started,·the·distributed | 172 | <p>When·all·involved·(mandatory)·nodes·have·been·started,·the·distributed |
| 173 | application·can·be·started·by·calling·<code·class="inline">application:start(Application)</code>·at·<em>all | 173 | application·can·be·started·by·calling·<code·class="inline">application:start(Application)</code>·at·<em>all |
| 174 | of·these·nodes.</em></p><p>A·boot·script·(see·<a·href="release_structure.html">Releases</a>)·can·be·used·that | 174 | of·these·nodes.</em></p><p>A·boot·script·(see·<a·href="release_structure.html">Releases</a>)·can·be·used·that |
| 175 | automatically·starts·the·application.</p><p>The·application·is·started·at·the·first·operational·node·that·is·listed·in·the | 175 | automatically·starts·the·application.</p><p>The·application·is·started·at·the·first·operational·node·that·is·listed·in·the |
| 176 | list·of·nodes·in·the·<code·class="inline">distributed</code>·configuration·parameter.·The·application·is | 176 | list·of·nodes·in·the·<code·class="inline">distributed</code>·configuration·parameter.·The·application·is |
| 177 | started·as·usual.·That·is,·an·application·master·is·created·and·calls·the | 177 | started·as·usual.·That·is,·an·application·master·is·created·and·calls·the |
| 178 | application·callback·function:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Module</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 178 | application·callback·function:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Module</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="8400740190-1">(</span><span·class="ss">normal</span><span·class="p">,</span><span·class="w">·</span><span·class="n">StartArgs</span><span·class="p"·data-group-id="8400740190-1">)</span></code></pre><p>Example:</p><p>Continuing·the·example·from·the·previous·section,·the·three·nodes·are·started, |
| 179 | specifying·the·system·configuration·file:</p><pre><code·class="text">>·erl·-sname·cp1·-config·cp1 | 179 | specifying·the·system·configuration·file:</p><pre><code·class="text">>·erl·-sname·cp1·-config·cp1 |
| 180 | >·erl·-sname·cp2·-config·cp2 | 180 | >·erl·-sname·cp2·-config·cp2 |
| 181 | >·erl·-sname·cp3·-config·cp3</code></pre><p>When·all·nodes·are·operational,·<code·class="inline">myapp</code>·can·be·started.·This·is·achieved·by | 181 | >·erl·-sname·cp3·-config·cp3</code></pre><p>When·all·nodes·are·operational,·<code·class="inline">myapp</code>·can·be·started.·This·is·achieved·by |
| 182 | calling·<code·class="inline">application:start(myapp)</code>·at·all·three·nodes.·It·is·then·started·at | 182 | calling·<code·class="inline">application:start(myapp)</code>·at·all·three·nodes.·It·is·then·started·at |
| 183 | <code·class="inline">cp1</code>,·as·shown·in·the·following·figure:</p><p><a·href=""·id="dist1"></a></p><p><img·src="assets/dist1.gif"·alt="Application·myapp·-·Situation·1"·title="Application·myapp·-·Situation·1"/></p><p>Similarly,·the·application·must·be·stopped·by·calling | 183 | <code·class="inline">cp1</code>,·as·shown·in·the·following·figure:</p><p><a·href=""·id="dist1"></a></p><p><img·src="assets/dist1.gif"·alt="Application·myapp·-·Situation·1"·title="Application·myapp·-·Situation·1"/></p><p>Similarly,·the·application·must·be·stopped·by·calling |
| 184 | <code·class="inline">application:stop(Application)</code>·at·all·involved·nodes.</p><h2·id="failover"·class="section-heading"> | 184 | <code·class="inline">application:stop(Application)</code>·at·all·involved·nodes.</p><h2·id="failover"·class="section-heading"> |
| 185 | ··<a·href="#failover"·class="hover-link"> | 185 | ··<a·href="#failover"·class="hover-link"> |
| Offset 187, 30 lines modified | Offset 187, 30 lines modified | ||
| 187 | ··</a> | 187 | ··</a> |
| 188 | ··<span·class="text">Failover</span> | 188 | ··<span·class="text">Failover</span> |
| 189 | </h2> | 189 | </h2> |
| 190 | <p>If·the·node·where·the·application·is·running·goes·down,·the·application·is | 190 | <p>If·the·node·where·the·application·is·running·goes·down,·the·application·is |
| 191 | restarted·(after·the·specified·time-out)·at·the·first·operational·node·that·is | 191 | restarted·(after·the·specified·time-out)·at·the·first·operational·node·that·is |
| 192 | listed·in·the·list·of·nodes·in·the·<code·class="inline">distributed</code>·configuration·parameter.·This | 192 | listed·in·the·list·of·nodes·in·the·<code·class="inline">distributed</code>·configuration·parameter.·This |
| 193 | is·called·a·<em>failover</em>.</p><p>The·application·is·started·the·normal·way·at·the·new·node,·that·is,·by·the | 193 | is·called·a·<em>failover</em>.</p><p>The·application·is·started·the·normal·way·at·the·new·node,·that·is,·by·the |
| 194 | application·master·calling:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Module</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 194 | application·master·calling:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Module</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="9097302234-1">(</span><span·class="ss">normal</span><span·class="p">,</span><span·class="w">·</span><span·class="n">StartArgs</span><span·class="p"·data-group-id="9097302234-1">)</span></code></pre><p>An·exception·is·if·the·application·has·the·<code·class="inline">start_phases</code>·key·defined·(see |
| 195 | <a·href="included_applications.html">Included·Applications</a>).·The·application·is·then | 195 | <a·href="included_applications.html">Included·Applications</a>).·The·application·is·then |
| 196 | instead·started·by·calling:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Module</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 196 | instead·started·by·calling:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Module</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="7612462213-1">(</span><span·class="p"·data-group-id="7612462213-2">{</span><span·class="ss">failover</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Node</span><span·class="p"·data-group-id="7612462213-2">}</span><span·class="p">,</sp[·...·truncated·by·diffoscope;·len:·100,·SHA:·ba9c92d0a0c4c18dcd6494dbe4437ff6507daaa7d9ba9a014b3834707e30e227·...·]-1">)</span></code></pre><p>Here·<code·class="inline">Node</code>·is·the·terminated·node.</p><p><em>Example:</em></p><p>If·<code·class="inline">cp1</code>·goes·down,·the·system·checks·which·one·of·the·other·nodes,·<code·class="inline">cp2</code>·or |
| 197 | <code·class="inline">cp3</code>,·has·the·least·number·of·running·applications,·but·waits·for·5·seconds·for | 197 | <code·class="inline">cp3</code>,·has·the·least·number·of·running·applications,·but·waits·for·5·seconds·for |
| 198 | <code·class="inline">cp1</code>·to·restart.·If·<code·class="inline">cp1</code>·does·not·restart·and·<code·class="inline">cp2</code>·runs·fewer·applications | 198 | <code·class="inline">cp1</code>·to·restart.·If·<code·class="inline">cp1</code>·does·not·restart·and·<code·class="inline">cp2</code>·runs·fewer·applications |
| 199 | than·<code·class="inline">cp3</code>,·<code·class="inline">myapp</code>·is·restarted·on·<code·class="inline">cp2</code>.</p><p><a·href=""·id="dist2"></a></p><p><img·src="assets/dist2.gif"·alt="Application·myapp·-·Situation·2"·title="Application·myapp·-·Situation·2"/></p><p>Suppose·now·that·<code·class="inline">cp2</code>·goes·also·down·and·does·not·restart·within·5·seconds. | 199 | than·<code·class="inline">cp3</code>,·<code·class="inline">myapp</code>·is·restarted·on·<code·class="inline">cp2</code>.</p><p><a·href=""·id="dist2"></a></p><p><img·src="assets/dist2.gif"·alt="Application·myapp·-·Situation·2"·title="Application·myapp·-·Situation·2"/></p><p>Suppose·now·that·<code·class="inline">cp2</code>·goes·also·down·and·does·not·restart·within·5·seconds. |
| 200 | <code·class="inline">myapp</code>·is·now·restarted·on·<code·class="inline">cp3</code>.</p><p><a·href=""·id="dist3"></a></p><p><img·src="assets/dist3.gif"·alt="Application·myapp·-·Situation·3"·title="Application·myapp·-·Situation·3"/></p><h2·id="takeover"·class="section-heading"> | 200 | <code·class="inline">myapp</code>·is·now·restarted·on·<code·class="inline">cp3</code>.</p><p><a·href=""·id="dist3"></a></p><p><img·src="assets/dist3.gif"·alt="Application·myapp·-·Situation·3"·title="Application·myapp·-·Situation·3"/></p><h2·id="takeover"·class="section-heading"> |
| 201 | ··<a·href="#takeover"·class="hover-link"> | 201 | ··<a·href="#takeover"·class="hover-link"> |
| 202 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 202 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 203 | ··</a> | 203 | ··</a> |
| 204 | ··<span·class="text">Takeover</span> | 204 | ··<span·class="text">Takeover</span> |
| 205 | </h2> | 205 | </h2> |
| 206 | <p>If·a·node·is·started,·which·has·higher·priority·according·to·<code·class="inline">distributed</code>·than | 206 | <p>If·a·node·is·started,·which·has·higher·priority·according·to·<code·class="inline">distributed</code>·than |
| 207 | the·node·where·a·distributed·application·is·running,·the·application·is | 207 | the·node·where·a·distributed·application·is·running,·the·application·is |
| 208 | restarted·at·the·new·node·and·stopped·at·the·old·node.·This·is·called·a | 208 | restarted·at·the·new·node·and·stopped·at·the·old·node.·This·is·called·a |
| 209 | <em>takeover</em>.</p><p>The·application·is·started·by·the·application·master·calling:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Module</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="8 | 209 | <em>takeover</em>.</p><p>The·application·is·started·by·the·application·master·calling:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Module</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="9858204837-1">(</span><span·class="p"·data-group-id="9858204837-2">{</span><span·class="ss">takeover</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Node</span><span·class="p"·data-group-id="9858204837-2">}</span><span·class="p">,</sp[·...·truncated·by·diffoscope;·len:·100,·SHA:·9ef493f9df42a1de02ce8802d8f801eecec42f0c75294d403cbe9be25a96d856·...·]-1">)</span></code></pre><p>Here·<code·class="inline">Node</code>·is·the·old·node.</p><p><em>Example:</em></p><p>If·<code·class="inline">myapp</code>·is·running·at·<code·class="inline">cp3</code>,·and·if·<code·class="inline">cp2</code>·now·restarts,·it·does·not·restart |
| 210 | <code·class="inline">myapp</code>,·as·the·order·between·the·<code·class="inline">cp2</code>·and·<code·class="inline">cp3</code>·nodes·is·undefined.</p><p><a·href=""·id="dist4"></a></p><p><img·src="assets/dist4.gif"·alt="Application·myapp·-·Situation·4"·title="Application·myapp·-·Situation·4"/></p><p>However,·if·<code·class="inline">cp1</code>·also·restarts,·the·function·<a·href="../../lib/kernel-10.2.3/doc/html/application.html#takeover/2"><code·class="inline">application:takeover/2</code></a>·moves | 210 | <code·class="inline">myapp</code>,·as·the·order·between·the·<code·class="inline">cp2</code>·and·<code·class="inline">cp3</code>·nodes·is·undefined.</p><p><a·href=""·id="dist4"></a></p><p><img·src="assets/dist4.gif"·alt="Application·myapp·-·Situation·4"·title="Application·myapp·-·Situation·4"/></p><p>However,·if·<code·class="inline">cp1</code>·also·restarts,·the·function·<a·href="../../lib/kernel-10.2.3/doc/html/application.html#takeover/2"><code·class="inline">application:takeover/2</code></a>·moves |
| 211 | <code·class="inline">myapp</code>·to·<code·class="inline">cp1</code>,·as·<code·class="inline">cp1</code>·has·a·higher·priority·than·<code·class="inline">cp3</code>·for·this | 211 | <code·class="inline">myapp</code>·to·<code·class="inline">cp1</code>,·as·<code·class="inline">cp1</code>·has·a·higher·priority·than·<code·class="inline">cp3</code>·for·this |
| 212 | application.·In·this·case,·<code·class="inline">Module:start({takeover,·cp3@cave},·StartArgs)</code>·is | 212 | application.·In·this·case,·<code·class="inline">Module:start({takeover,·cp3@cave},·StartArgs)</code>·is |
| 213 | executed·at·<code·class="inline">cp1</code>·to·start·the·application.</p><p><a·href=""·id="dist5"></a></p><p><img·src="assets/dist5.gif"·alt="Application·myapp·-·Situation·5"·title="Application·myapp·-·Situation·5"/></p> | 213 | executed·at·<code·class="inline">cp1</code>·to·start·the·application.</p><p><a·href=""·id="dist5"></a></p><p><img·src="assets/dist5.gif"·alt="Application·myapp·-·Situation·5"·title="Application·myapp·-·Situation·5"/></p> |
| 214 | </div> | 214 | </div> |
| 215 | <div·class="bottom-actions"·id="bottom-actions"> | 215 | <div·class="bottom-actions"·id="bottom-actions"> |
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| 112 | ······</a> | 112 | ······</a> |
| 113 | ····<span>Documentation</span> | 113 | ····<span>Documentation</span> |
| 114 | ··</h1> | 114 | ··</h1> |
| 115 | <p>Documentation·in·Erlang·is·done·through·the·<code·class="inline">-moduledoc</code>·and·<code·class="inline">-doc</code> | 115 | <p>Documentation·in·Erlang·is·done·through·the·<code·class="inline">-moduledoc</code>·and·<code·class="inline">-doc</code> |
| 116 | <a·href="modules.html#module-attributes">attributes</a>.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 116 | <a·href="modules.html#module-attributes">attributes</a>.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="2157821979-1">(</span><span·class="ss">arith</span><span·class="p"·data-group-id="2157821979-1">)</span><span·class="p">.</span><span·class="w"> |
| 117 | </span><span·class="p">-</span><span·class="na">moduledoc</span><span·class="w">·</span><span·class="s">""" | 117 | </span><span·class="p">-</span><span·class="na">moduledoc</span><span·class="w">·</span><span·class="s">""" |
| 118 | A·module·for·basic·arithmetic. | 118 | A·module·for·basic·arithmetic. |
| 119 | """</span><span·class="p">.</span><span·class="w"> | 119 | """</span><span·class="p">.</span><span·class="w"> |
| 120 | </span><span·class="w"> | 120 | </span><span·class="w"> |
| 121 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 121 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="2157821979-2">(</span><span·class="p"·data-group-id="2157821979-3">[</span><span·class="ss">add</span><span·class="p">/</span><span·class="mi">2</span><span·class="p"·data-group-id="2157821979-3">]</span><span·class="p"·data-group-id="2157821979-2">)</span><span·class="p">.</span><span·class="w"> |
| 122 | </span><span·class="w"> | 122 | </span><span·class="w"> |
| 123 | </span><span·class="p">-</span><span·class="na">doc</span><span·class="w">·</span><span·class="s">"Adds·two·numbers."</span><span·class="p">.</span><span·class="w"> | 123 | </span><span·class="p">-</span><span·class="na">doc</span><span·class="w">·</span><span·class="s">"Adds·two·numbers."</span><span·class="p">.</span><span·class="w"> |
| 124 | </span><span·class="nf">add</span><span·class="p"·data-group-id=" | 124 | </span><span·class="nf">add</span><span·class="p"·data-group-id="2157821979-4">(</span><span·class="n">One</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Two</span><span·class="p"·data-group-id="2157821979-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">One</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="n">Two</span><span·class="p">.</span></code></pre><p>The·<code·class="inline">-moduledoc</code>·attribute·has·to·be·located·before·the·first·<code·class="inline">-doc</code>·attribute |
| 125 | or·function·declaration.·It·documents·the·overall·purpose·of·the·module.</p><p>The·<code·class="inline">-doc</code>·attribute·always·precedes·the·<a·href="ref_man_functions.html">function</a>·or | 125 | or·function·declaration.·It·documents·the·overall·purpose·of·the·module.</p><p>The·<code·class="inline">-doc</code>·attribute·always·precedes·the·<a·href="ref_man_functions.html">function</a>·or |
| 126 | <a·href="modules.html#module-attributes">attribute</a>·it·documents.·The | 126 | <a·href="modules.html#module-attributes">attribute</a>·it·documents.·The |
| 127 | attributes·that·can·be·documented·are | 127 | attributes·that·can·be·documented·are |
| 128 | <a·href="typespec.html#type-declarations-of-user-defined-types">user-defined·types</a> | 128 | <a·href="typespec.html#type-declarations-of-user-defined-types">user-defined·types</a> |
| 129 | (<code·class="inline">-type</code>·and·<code·class="inline">-opaque</code>)·and | 129 | (<code·class="inline">-type</code>·and·<code·class="inline">-opaque</code>)·and |
| 130 | <a·href="modules.html#behaviour-module-attribute">behaviour·module·attributes</a> | 130 | <a·href="modules.html#behaviour-module-attribute">behaviour·module·attributes</a> |
| 131 | (<code·class="inline">-callback</code>).</p><p>By·default·the·format·used·for·documentation·attributes·is | 131 | (<code·class="inline">-callback</code>).</p><p>By·default·the·format·used·for·documentation·attributes·is |
| Offset 140, 55 lines modified | Offset 140, 55 lines modified | ||
| 140 | <a·href="modules.html#documentation-attributes">Documentation·Attributes</a>.</p><p><code·class="inline">-doc</code>·attributes·have·been·available·since·Erlang/OTP·27.</p><h2·id="documentation-metadata"·class="section-heading"> | 140 | <a·href="modules.html#documentation-attributes">Documentation·Attributes</a>.</p><p><code·class="inline">-doc</code>·attributes·have·been·available·since·Erlang/OTP·27.</p><h2·id="documentation-metadata"·class="section-heading"> |
| 141 | ··<a·href="#documentation-metadata"·class="hover-link"> | 141 | ··<a·href="#documentation-metadata"·class="hover-link"> |
| 142 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 142 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 143 | ··</a> | 143 | ··</a> |
| 144 | ··<span·class="text">Documentation·metadata</span> | 144 | ··<span·class="text">Documentation·metadata</span> |
| 145 | </h2> | 145 | </h2> |
| 146 | <p>It·is·possible·to·add·metadata·to·the·documentation·entry.·You·do·this·by·adding | 146 | <p>It·is·possible·to·add·metadata·to·the·documentation·entry.·You·do·this·by·adding |
| 147 | a·<code·class="inline">-moduledoc</code>·or·<code·class="inline">-doc</code>·attribute·with·a·map·as·argument.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 147 | a·<code·class="inline">-moduledoc</code>·or·<code·class="inline">-doc</code>·attribute·with·a·map·as·argument.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="0746839717-1">(</span><span·class="ss">arith</span><span·class="p"·data-group-id="0746839717-1">)</span><span·class="p">.</span><span·class="w"> |
| 148 | </span><span·class="p">-</span><span·class="na">moduledoc</span><span·class="w">·</span><span·class="s">""" | 148 | </span><span·class="p">-</span><span·class="na">moduledoc</span><span·class="w">·</span><span·class="s">""" |
| 149 | A·module·for·basic·arithmetic. | 149 | A·module·for·basic·arithmetic. |
| 150 | """</span><span·class="p">.</span><span·class="w"> | 150 | """</span><span·class="p">.</span><span·class="w"> |
| 151 | </span><span·class="p">-</span><span·class="na">moduledoc</span><span·class="w">·</span><span·class="p"·data-group-id=" | 151 | </span><span·class="p">-</span><span·class="na">moduledoc</span><span·class="w">·</span><span·class="p"·data-group-id="0746839717-2">#{</span><span·class="ss">since</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"1.0"</span><span·class="p"·data-group-id="0746839717-2">}</span><span·class="p">.</span><span·class="w"> |
| 152 | </span><span·class="w"> | 152 | </span><span·class="w"> |
| 153 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 153 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="0746839717-3">(</span><span·class="p"·data-group-id="0746839717-4">[</span><span·class="ss">add</span><span·class="p">/</span><span·class="mi">2</span><span·class="p"·data-group-id="0746839717-4">]</span><span·class="p"·data-group-id="0746839717-3">)</span><span·class="p">.</span><span·class="w"> |
| 154 | </span><span·class="w"> | 154 | </span><span·class="w"> |
| 155 | </span><span·class="p">-</span><span·class="na">doc</span><span·class="w">·</span><span·class="s">"Adds·two·numbers."</span><span·class="p">.</span><span·class="w"> | 155 | </span><span·class="p">-</span><span·class="na">doc</span><span·class="w">·</span><span·class="s">"Adds·two·numbers."</span><span·class="p">.</span><span·class="w"> |
| 156 | </span><span·class="p">-</span><span·class="na">doc</span><span·class="p"·data-group-id=" | 156 | </span><span·class="p">-</span><span·class="na">doc</span><span·class="p"·data-group-id="0746839717-5">(</span><span·class="p"·data-group-id="0746839717-6">#{</span><span·class="ss">since</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"1.0"</span><span·class="p"·data-group-id="074683[·...·truncated·by·diffoscope;·len:·57,·SHA:·044d0b158116771d61c39adf165be8c38d086aae370b84588173502f74166a1d·...·]-5">)</span><span·class="p">.</span><span·class="w"> |
| 157 | </span><span·class="nf">add</span><span·class="p"·data-group-id=" | 157 | </span><span·class="nf">add</span><span·class="p"·data-group-id="0746839717-7">(</span><span·class="n">One</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Two</span><span·class="p"·data-group-id="0746839717-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">One</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="n">Two</span><span·class="p">.</span></code></pre><p>The·metadata·is·used·by·documentation·tools·to·provide·extra·information·to·the |
| 158 | user.·There·can·be·multiple·metadata·documentation·entries,·in·which·case·the | 158 | user.·There·can·be·multiple·metadata·documentation·entries,·in·which·case·the |
| 159 | maps·will·be·merged·with·the·latest·taking·precedence·if·there·are·duplicate | 159 | maps·will·be·merged·with·the·latest·taking·precedence·if·there·are·duplicate |
| 160 | keys.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">doc</span><span·class="w">·</span><span·class="s">"Adds·two·numbers."</span><span·class="p">.</span><span·class="w"> | 160 | keys.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">doc</span><span·class="w">·</span><span·class="s">"Adds·two·numbers."</span><span·class="p">.</span><span·class="w"> |
| 161 | </span><span·class="p">-</span><span·class="na">doc</span><span·class="w">·</span><span·class="p"·data-group-id=" | 161 | </span><span·class="p">-</span><span·class="na">doc</span><span·class="w">·</span><span·class="p"·data-group-id="9039595703-1">#{</span><span·class="ss">since</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"1.0"</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">author</span><span·class=[·...·truncated·by·diffoscope;·len:·142,·SHA:·20716668c2d7dfb3fb8c56f386cf948aabbdbf37db6c34f7525f4715ba82da42·...·]3-1">}</span><span·class="p">.</span><span·class="w"> |
| 162 | </span><span·class="p">-</span><span·class="na">doc</span><span·class="w">·</span><span·class="p"·data-group-id=" | 162 | </span><span·class="p">-</span><span·class="na">doc</span><span·class="w">·</span><span·class="p"·data-group-id="9039595703-2">#{</span><span·class="ss">since</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"2.0"</span><span·class="p"·data-group-id="9039595703-2">}</span><span·class="p">.</span><span·class="w"> |
| 163 | </span><span·class="nf">add</span><span·class="p"·data-group-id=" | 163 | </span><span·class="nf">add</span><span·class="p"·data-group-id="9039595703-3">(</span><span·class="n">One</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Two</span><span·class="p"·data-group-id="9039595703-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">One</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="n">Two</span><span·class="p">.</span></code></pre><p>This·will·result·in·a·metadata·entry·of·<code·class="inline">#{since·=>·"2.0",·author·=>·"Joe"}</code>.</p><p>The·keys·and·values·in·the·metadata·map·can·be·any·type,·but·it·is·recommended |
| 164 | that·only·<a·href="data_types.html#atom">atoms</a>·are·used·for·keys·and | 164 | that·only·<a·href="data_types.html#atom">atoms</a>·are·used·for·keys·and |
| 165 | <a·href="data_types.html#string">strings</a>·for·the·values.</p><h2·id="external-documentation-files"·class="section-heading"> | 165 | <a·href="data_types.html#string">strings</a>·for·the·values.</p><h2·id="external-documentation-files"·class="section-heading"> |
| 166 | ··<a·href="#external-documentation-files"·class="hover-link"> | 166 | ··<a·href="#external-documentation-files"·class="hover-link"> |
| 167 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 167 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 168 | ··</a> | 168 | ··</a> |
| 169 | ··<span·class="text">External·documentation·files</span> | 169 | ··<span·class="text">External·documentation·files</span> |
| 170 | </h2> | 170 | </h2> |
| 171 | <p>The·<code·class="inline">-moduledoc</code>·and·<code·class="inline">-doc</code>·can·also·be·placed·in·external·files.·To·do·so·use | 171 | <p>The·<code·class="inline">-moduledoc</code>·and·<code·class="inline">-doc</code>·can·also·be·placed·in·external·files.·To·do·so·use |
| 172 | <code·class="inline">-doc·{file,·"path/to/doc.md"}</code>·to·point·to·the·documentation.·The·path·used·is | 172 | <code·class="inline">-doc·{file,·"path/to/doc.md"}</code>·to·point·to·the·documentation.·The·path·used·is |
| 173 | relative·to·the·file·where·the·<code·class="inline">-doc</code>·attribute·is·located.·For·example:</p><pre><code·class="markdown">%%·doc/add.md | 173 | relative·to·the·file·where·the·<code·class="inline">-doc</code>·attribute·is·located.·For·example:</p><pre><code·class="markdown">%%·doc/add.md |
| 174 | Adds·two·numbers.</code></pre><p>and</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·src/arith.erl</span><span·class="w"> | 174 | Adds·two·numbers.</code></pre><p>and</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·src/arith.erl</span><span·class="w"> |
| 175 | </span><span·class="p">-</span><span·class="na">doc</span><span·class="p"·data-group-id=" | 175 | </span><span·class="p">-</span><span·class="na">doc</span><span·class="p"·data-group-id="1106811962-1">(</span><span·class="p"·data-group-id="1106811962-2">{</span><span·class="ss">file</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"../doc/add.md"</span><span·class="p"·data-group-id="1106811962-2">}</span><spa[·...·truncated·by·diffoscope;·len:·37,·SHA:·e0845471e75780208e28b4feae2470f876f52dc2186e67adf88fb34ff80e755a·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 176 | </span><span·class="nf">add</span><span·class="p"·data-group-id=" | 176 | </span><span·class="nf">add</span><span·class="p"·data-group-id="1106811962-3">(</span><span·class="n">One</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Two</span><span·class="p"·data-group-id="1106811962-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">One</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="n">Two</span><span·class="p">.</span></code></pre><h2·id="documenting-a-module"·class="section-heading"> |
| 177 | ··<a·href="#documenting-a-module"·class="hover-link"> | 177 | ··<a·href="#documenting-a-module"·class="hover-link"> |
| 178 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 178 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 179 | ··</a> | 179 | ··</a> |
| 180 | ··<span·class="text">Documenting·a·module</span> | 180 | ··<span·class="text">Documenting·a·module</span> |
| 181 | </h2> | 181 | </h2> |
| 182 | <p>The·module·description·should·include·details·on·how·to·use·the·API·and·examples | 182 | <p>The·module·description·should·include·details·on·how·to·use·the·API·and·examples |
| 183 | of·the·different·functions·working·together.·Here·is·a·good·place·to·use·images | 183 | of·the·different·functions·working·together.·Here·is·a·good·place·to·use·images |
| 184 | and·other·diagrams·to·better·show·the·usage·of·the·module.·Instead·of·writing·a | 184 | and·other·diagrams·to·better·show·the·usage·of·the·module.·Instead·of·writing·a |
| 185 | long·text·in·the·<code·class="inline">moduledoc</code>·attribute,·it·could·be·better·to·break·it·out·into | 185 | long·text·in·the·<code·class="inline">moduledoc</code>·attribute,·it·could·be·better·to·break·it·out·into |
| 186 | an·external·page.</p><p>The·<code·class="inline">moduledoc</code>·attribute·should·start·with·a·short·paragraph·describing·the | 186 | an·external·page.</p><p>The·<code·class="inline">moduledoc</code>·attribute·should·start·with·a·short·paragraph·describing·the |
| 187 | module·and·then·go·into·greater·details.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 187 | module·and·then·go·into·greater·details.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="0098724222-1">(</span><span·class="ss">arith</span><span·class="p"·data-group-id="0098724222-1">)</span><span·class="p">.</span><span·class="w"> |
| 188 | </span><span·class="p">-</span><span·class="na">moduledoc</span><span·class="w">·</span><span·class="s">""</span><span·class="s">" | 188 | </span><span·class="p">-</span><span·class="na">moduledoc</span><span·class="w">·</span><span·class="s">""</span><span·class="s">" |
| 189 | ···A·module·for·basic·arithmetic. | 189 | ···A·module·for·basic·arithmetic. |
| 190 | ···This·module·can·be·used·to·add·and·subtract·values.·For·example: | 190 | ···This·module·can·be·used·to·add·and·subtract·values.·For·example: |
| 191 | ···```erlang | 191 | ···```erlang |
| 192 | ···1>·arith:substract(arith:add(2,·3),·1). | 192 | ···1>·arith:substract(arith:add(2,·3),·1). |
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| 203 | <p>There·are·three·reserved·metadata·keys·for·<code·class="inline">-moduledoc</code>:</p><ul><li><code·class="inline">since</code>·-·Shows·in·which·version·of·the·application·the·module·was·added. | 203 | <p>There·are·three·reserved·metadata·keys·for·<code·class="inline">-moduledoc</code>:</p><ul><li><code·class="inline">since</code>·-·Shows·in·which·version·of·the·application·the·module·was·added. |
| 204 | If·this·is·added,·all·functions,·types,·and·callbacks·within·will·also·receive | 204 | If·this·is·added,·all·functions,·types,·and·callbacks·within·will·also·receive |
| 205 | the·same·<code·class="inline">since</code>·value·unless·specified·in·the·metadata·of·the·function,·type | 205 | the·same·<code·class="inline">since</code>·value·unless·specified·in·the·metadata·of·the·function,·type |
| 206 | or·callback.</li><li><code·class="inline">deprecated</code>·-·Shows·a·text·in·the·documentation·explaining·that·it·is | 206 | or·callback.</li><li><code·class="inline">deprecated</code>·-·Shows·a·text·in·the·documentation·explaining·that·it·is |
| 207 | deprecated·and·what·to·use·instead.</li><li><code·class="inline">format</code>·-·The·format·to·use·for·all·documentation·in·this·module.·The | 207 | deprecated·and·what·to·use·instead.</li><li><code·class="inline">format</code>·-·The·format·to·use·for·all·documentation·in·this·module.·The |
| 208 | default·is·<code·class="inline">text/markdown</code>.·It·should·be·written·using·the | 208 | default·is·<code·class="inline">text/markdown</code>.·It·should·be·written·using·the |
| 209 | <a·href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types">mime·type</a> | 209 | <a·href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types">mime·type</a> |
| 210 | of·the·format.</li></ul><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">moduledoc</span><span·class="w">·</span><span·class="p"·data-group-id=" | 210 | of·the·format.</li></ul><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">moduledoc</span><span·class="w">·</span><span·class="p"·data-group-id="7069244604-1">{</span><span·class="ss">file</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"../doc/arith.asciidoc"</span><span·class="p"·data-group-id="7069244604-1">}</span><span·class="p">.</span><span·class="w"> |
| 211 | </span><span·class="p">-</span><span·class="na">moduledoc</span><span·class="w">·</span><span·class="p"·data-group-id=" | 211 | </span><span·class="p">-</span><span·class="na">moduledoc</span><span·class="w">·</span><span·class="p"·data-group-id="7069244604-2">#{</span><span·class="ss">since</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"0.1"</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">format</span><span·class=[·...·truncated·by·diffoscope;·len:·153,·SHA:·d52725be6b664a8ec4763e5b39dfe34c0c3547feb0888de1bcea4866c16754b2·...·]-2">}</span><span·class="p">.</span><span·class="w"> |
| 212 | </span><span·class="p">-</span><span·class="na">moduledoc</span><span·class="w">·</span><span·class="p"·data-group-id=" | 212 | </span><span·class="p">-</span><span·class="na">moduledoc</span><span·class="w">·</span><span·class="p"·data-group-id="7069244604-3">#{</span><span·class="ss">deprecated</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"Use·the·Erlang·arithmetic·operators·instead."</span><span·class="p"·data-group-id="7069244604-3">}</span><span·class="p">.</span></code></pre><h2·id="documenting-functions-user-defined-types-and-callbacks"·class="section-heading"> |
| 213 | ··<a·href="#documenting-functions-user-defined-types-and-callbacks"·class="hover-link"> | 213 | ··<a·href="#documenting-functions-user-defined-types-and-callbacks"·class="hover-link"> |
| 214 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 214 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 215 | ··</a> | 215 | ··</a> |
| 216 | ··<span·class="text">Documenting·functions,·user-defined·types,·and·callbacks</span> | 216 | ··<span·class="text">Documenting·functions,·user-defined·types,·and·callbacks</span> |
| 217 | </h2> | 217 | </h2> |
| 218 | <p>Functions,·types,·and·callbacks·can·be·documented·using·the·<code·class="inline">-doc</code>·attribute. | 218 | <p>Functions,·types,·and·callbacks·can·be·documented·using·the·<code·class="inline">-doc</code>·attribute. |
| 219 | Each·entry·should·start·with·a·short·paragraph·describing·the·purpose·of·entity, | 219 | Each·entry·should·start·with·a·short·paragraph·describing·the·purpose·of·entity, |
| 220 | and·then·go·into·greater·detail·in·needed.</p><p>It·is·not·recommended·to·include·images·or·diagrams·in·this·documentation·as·it | 220 | and·then·go·into·greater·detail·in·needed.</p><p>It·is·not·recommended·to·include·images·or·diagrams·in·this·documentation·as·it |
| 221 | is·used·by·IDEs·and·<a·href="../../lib/stdlib-6.2.1/doc/html/c.html#h/1"><code·class="inline">c:h/1</code></a>·to·show·the·documentation·to·the·user.</p><p>For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">doc</span><span·class="w">·</span><span·class="s">""" | 221 | is·used·by·IDEs·and·<a·href="../../lib/stdlib-6.2.1/doc/html/c.html#h/1"><code·class="inline">c:h/1</code></a>·to·show·the·documentation·to·the·user.</p><p>For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">doc</span><span·class="w">·</span><span·class="s">""" |
| 222 | A·number·that·can·be·used·by·the·arith·module. | 222 | A·number·that·can·be·used·by·the·arith·module. |
| 223 | We·use·a·special·number·here·so·that·we·know | 223 | We·use·a·special·number·here·so·that·we·know |
| 224 | that·this·number·comes·from·this·module. | 224 | that·this·number·comes·from·this·module. |
| 225 | """</span><span·class="p">.</span><span·class="w"> | 225 | """</span><span·class="p">.</span><span·class="w"> |
| 226 | </span><span·class="p">-</span><span·class="na">opaque</span><span·class="w">·</span><span·class="nf">number</span><span·class="p"·data-group-id="5 | 226 | </span><span·class="p">-</span><span·class="na">opaque</span><span·class="w">·</span><span·class="nf">number</span><span·class="p"·data-group-id="3506878043-1">(</span><span·class="p"·data-group-id="3506878043-1">)</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="3506878043-2">{</span><span·class="ss">arith</span><sp[·...·truncated·by·diffoscope;·len:·276,·SHA:·df9f0d5265050475eb4d2141ddf5eeaa9b9ff183c95d460e2264417a46425a51·...·]-2">}</span><span·class="p">.</span><span·class="w"> |
| 227 | </span><span·class="w"> | 227 | </span><span·class="w"> |
| 228 | </span><span·class="p">-</span><span·class="na">doc</span><span·class="w">·</span><span·class="s">""" | 228 | </span><span·class="p">-</span><span·class="na">doc</span><span·class="w">·</span><span·class="s">""" |
| 229 | Adds·two·numbers. | 229 | Adds·two·numbers. |
| 230 | ###·Example: | 230 | ###·Example: |
| 231 | ``` | 231 | ``` |
| 232 | 1>·arith:add(arith:number(1),·arith:number(2)).·{number,·3} | 232 | 1>·arith:add(arith:number(1),·arith:number(2)).·{number,·3} |
| 233 | ``` | 233 | ``` |
| 234 | """</span><span·class="p">.</span><span·class="w"> | 234 | """</span><span·class="p">.</span><span·class="w"> |
| 235 | </span><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">add</span><span·class="p"·data-group-id="5 | 235 | </span><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">add</span><span·class="p"·data-group-id="3506878043-4">(</span><span·class="nf">number</span><span·class="p"·data-group-id="3506878043-5">(</span><span·class="p"·data-group-id="3506878043-5">)</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">number</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·339,·SHA:·6bf00819e31c49307ca0201981249f8e449b0c5de320c40d3dd9e64f563f0619·...·]-7">)</span><span·class="p">.</span><span·class="w"> |
| 236 | </span><span·class="nf">add</span><span·class="p"·data-group-id="5 | 236 | </span><span·class="nf">add</span><span·class="p"·data-group-id="3506878043-8">(</span><span·class="p"·data-group-id="3506878043-9">{</span><span·class="ss">number</span><span·class="p">,</span><span·class="w">·</span><span·class="n">One</span><span·class="p"·data-group-id="3506878043-9">}</span><span·class="p">,</span>[·...·truncated·by·diffoscope;·len:·662,·SHA:·ec783cc5dc39c3be2e0671dde1257912ef3dc99ecf5640fd4bc9bb34c4b7c912·...·]-11">}</span><span·class="p">.</span></code></pre><h3·id="doc-metadata"·class="section-heading"> |
| 237 | ··<a·href="#doc-metadata"·class="hover-link"> | 237 | ··<a·href="#doc-metadata"·class="hover-link"> |
| 238 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 238 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 239 | ··</a> | 239 | ··</a> |
| 240 | ··<span·class="text">Doc·metadata</span> | 240 | ··<span·class="text">Doc·metadata</span> |
| 241 | </h3> | 241 | </h3> |
| 242 | <p>There·are·four·reserved·metadata·keys·for·<code·class="inline">-doc</code>:</p><ul><li><p><code·class="inline">since·=>·unicode:chardata()</code>·-·Shows·which·version·of·the·application·the | 242 | <p>There·are·four·reserved·metadata·keys·for·<code·class="inline">-doc</code>:</p><ul><li><p><code·class="inline">since·=>·unicode:chardata()</code>·-·Shows·which·version·of·the·application·the |
| 243 | module·was·added.</p></li><li><p><code·class="inline">deprecated·=>·unicode:chardata()</code>·-·Shows·a·text·in·the·documentation | 243 | module·was·added.</p></li><li><p><code·class="inline">deprecated·=>·unicode:chardata()</code>·-·Shows·a·text·in·the·documentation |
| 244 | explaining·that·it·is·deprecated·and·what·to·use·instead.·The·compiler·will | 244 | explaining·that·it·is·deprecated·and·what·to·use·instead.·The·compiler·will |
| 245 | automatically·insert·this·key·if·there·is·a·<code·class="inline">-deprecated</code>·attribute·marking·a | 245 | automatically·insert·this·key·if·there·is·a·<code·class="inline">-deprecated</code>·attribute·marking·a |
| 246 | function·as·deprecated.</p></li><li><p><code·class="inline">equiv·=>·unicode:chardata()·|·F/A·|·F(...)</code>·-·Notes·that·this·function·is·equivalent·to | 246 | function·as·deprecated.</p></li><li><p><code·class="inline">equiv·=>·unicode:chardata()·|·F/A·|·F(...)</code>·-·Notes·that·this·function·is·equivalent·to |
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| 122 | ··<span·class="text">Drivers·and·Concurrency</span> | 122 | ··<span·class="text">Drivers·and·Concurrency</span> |
| 123 | </h2> | 123 | </h2> |
| 124 | <p>The·runtime·system·always·takes·a·lock·before·running·any·code·in·a·driver.</p><p>By·default,·that·lock·is·at·the·driver·level,·that·is,·if·several·ports·have | 124 | <p>The·runtime·system·always·takes·a·lock·before·running·any·code·in·a·driver.</p><p>By·default,·that·lock·is·at·the·driver·level,·that·is,·if·several·ports·have |
| 125 | been·opened·to·the·same·driver,·only·code·for·one·port·at·the·same·time·can·be | 125 | been·opened·to·the·same·driver,·only·code·for·one·port·at·the·same·time·can·be |
| 126 | running.</p><p>A·driver·can·be·configured·to·have·one·lock·for·each·port·instead.</p><p>If·a·driver·is·used·in·a·functional·way·(that·is,·holds·no·state,·but·only·does | 126 | running.</p><p>A·driver·can·be·configured·to·have·one·lock·for·each·port·instead.</p><p>If·a·driver·is·used·in·a·functional·way·(that·is,·holds·no·state,·but·only·does |
| 127 | some·heavy·calculation·and·returns·a·result),·several·ports·with·registered | 127 | some·heavy·calculation·and·returns·a·result),·several·ports·with·registered |
| 128 | names·can·be·opened·beforehand,·and·the·port·to·be·used·can·be·chosen·based·on | 128 | names·can·be·opened·beforehand,·and·the·port·to·be·used·can·be·chosen·based·on |
| 129 | the·scheduler·ID·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id=" | 129 | the·scheduler·ID·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="7678862350-1">(</span><span·class="n">PORT_NAMES</span><span·class="p"·data-group-id="7678862350-2">(</span><span·class="p"·data-group-id="7678862350-2">)</span><span·class="p">,</span><span·class="w"> |
| 130 | » </span><span·class="p"·data-group-id=" | 130 | » </span><span·class="p"·data-group-id="7678862350-3">{</span><span·class="ss">some_driver_01</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_02</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_03</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_04</span><span·class="p">,</span><span·class="w"> |
| 131 | » ·</span><span·class="ss">some_driver_05</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_06</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_07</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_08</span><span·class="p">,</span><span·class="w"> | 131 | » ·</span><span·class="ss">some_driver_05</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_06</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_07</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_08</span><span·class="p">,</span><span·class="w"> |
| 132 | » ·</span><span·class="ss">some_driver_09</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_10</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_11</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_12</span><span·class="p">,</span><span·class="w"> | 132 | » ·</span><span·class="ss">some_driver_09</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_10</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_11</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_12</span><span·class="p">,</span><span·class="w"> |
| 133 | » ·</span><span·class="ss">some_driver_13</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_14</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_15</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_16</span><span·class="p"·data-group-id=" | 133 | » ·</span><span·class="ss">some_driver_13</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_14</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_15</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">some_driver_16</span><span·class="p"·data-group-id="7678862350-3">}</span><span·class="p"·data-group-id="7678862350-1">)</span><span·class="p">.</span><span·class="w"> |
| 134 | </span><span·class="nf">client_port</span><span·class="p"·data-group-id=" | 134 | </span><span·class="nf">client_port</span><span·class="p"·data-group-id="7678862350-4">(</span><span·class="p"·data-group-id="7678862350-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 135 | ····</span><span·class="nf">element</span><span·class="p"·data-group-id="2695886361-5">(</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">system_info</span><span·class="p"·data-group-id="2695886361-6">(</span><span·class="ss">scheduler_id</span><span·class="p"·data-group-id="2695886361-6">)</span><span·class="w">·</span><span·class="ow">rem</span><span·class="w">·</span><span·class="nf">tuple_size</span><span·class="p"·data-group-id="2695886361-7">(</span><span·class="o">?</span><span·class="n">PORT_NAMES</span><span·class="p"·data-group-id="2695886361-8">(</span><span·class="p"·data-group-id="2695886361-8">)</span><span·class="p"·data-group-id="2695886361-7">)</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> | ||
| 136 | 135 | ····</span><span·class="nf">element</span><span·class="p"·data-group-id="7678862350-5">(</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">system_info</span><span·class="p"·data-group-id="7678862350-6">(</span><span·class="ss">sc[·...·truncated·by·diffoscope;·len:·585,·SHA:·ea6f89abdcf5dbae17859dfd89f05ea5ecf724af0a0bba49e810a971ebabeafb·...·] | |
| 136 | » ····</span><span·class="o">?</span><span·class="n">PORT_NAMES</span><span·class="p"·data-group-id="7678862350-9">(</span><span·class="p"·data-group-id="7678862350-9">)</span><span·class="p"·data-group-id="7678862350-5">)</span><span·class="p">.</span></code></pre><p>As·long·as·there·are·no·more·than·16·schedulers,·there·will·never·be·any·lock | ||
| 137 | contention·on·the·port·lock·for·the·driver.</p><h2·id="avoiding-copying-binaries-when-calling-a-driver"·class="section-heading"> | 137 | contention·on·the·port·lock·for·the·driver.</p><h2·id="avoiding-copying-binaries-when-calling-a-driver"·class="section-heading"> |
| 138 | ··<a·href="#avoiding-copying-binaries-when-calling-a-driver"·class="hover-link"> | 138 | ··<a·href="#avoiding-copying-binaries-when-calling-a-driver"·class="hover-link"> |
| 139 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 139 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 140 | ··</a> | 140 | ··</a> |
| 141 | ··<span·class="text">Avoiding·Copying·Binaries·When·Calling·a·Driver</span> | 141 | ··<span·class="text">Avoiding·Copying·Binaries·When·Calling·a·Driver</span> |
| 142 | </h2> | 142 | </h2> |
| 143 | <p>There·are·basically·two·ways·to·avoid·copying·a·binary·that·is·sent·to·a·driver:</p><ul><li><p>If·the·<code·class="inline">Data</code>·argument·for·<a·href="../../erts-15.2.3/doc/html/erlang.html#port_control/3"><code·class="inline">port_control/3</code></a>·is·a | 143 | <p>There·are·basically·two·ways·to·avoid·copying·a·binary·that·is·sent·to·a·driver:</p><ul><li><p>If·the·<code·class="inline">Data</code>·argument·for·<a·href="../../erts-15.2.3/doc/html/erlang.html#port_control/3"><code·class="inline">port_control/3</code></a>·is·a |
| Offset 122, 67 lines modified | Offset 122, 67 lines modified | ||
| 122 | ··<span·class="text">Pattern·Matching</span> | 122 | ··<span·class="text">Pattern·Matching</span> |
| 123 | </h2> | 123 | </h2> |
| 124 | <p>Pattern·matching·in·function·head·as·well·as·in·<code·class="inline">case</code>·and·<code·class="inline">receive</code>·clauses·are | 124 | <p>Pattern·matching·in·function·head·as·well·as·in·<code·class="inline">case</code>·and·<code·class="inline">receive</code>·clauses·are |
| 125 | optimized·by·the·compiler.·With·a·few·exceptions,·there·is·nothing·to·gain·by | 125 | optimized·by·the·compiler.·With·a·few·exceptions,·there·is·nothing·to·gain·by |
| 126 | rearranging·clauses.</p><p>One·exception·is·pattern·matching·of·binaries.·The·compiler·does·not·rearrange | 126 | rearranging·clauses.</p><p>One·exception·is·pattern·matching·of·binaries.·The·compiler·does·not·rearrange |
| 127 | clauses·that·match·binaries.·Placing·the·clause·that·matches·against·the·empty | 127 | clauses·that·match·binaries.·Placing·the·clause·that·matches·against·the·empty |
| 128 | binary·<em>last</em>·is·usually·slightly·faster·than·placing·it·<em>first</em>.</p><p>The·following·is·a·rather·unnatural·example·to·show·another·exception·where | 128 | binary·<em>last</em>·is·usually·slightly·faster·than·placing·it·<em>first</em>.</p><p>The·following·is·a·rather·unnatural·example·to·show·another·exception·where |
| 129 | rearranging·clauses·is·beneficial:</p><p><strong>DO·NOT</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">atom_map1</span><span·class="p"·data-group-id="0 | 129 | rearranging·clauses·is·beneficial:</p><p><strong>DO·NOT</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">atom_map1</span><span·class="p"·data-group-id="0827429270-1">(</span><span·class="ss">one</span><span·class="p"·data-group-id="0827429270-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="mi">1</span><span·class="p">;</span><span·class="w"> |
| 130 | </span><span·class="nf">atom_map1</span><span·class="p"·data-group-id="0 | 130 | </span><span·class="nf">atom_map1</span><span·class="p"·data-group-id="0827429270-2">(</span><span·class="ss">two</span><span·class="p"·data-group-id="0827429270-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="mi">2</span><span·class="p">;</span><span·class="w"> |
| 131 | </span><span·class="nf">atom_map1</span><span·class="p"·data-group-id="0 | 131 | </span><span·class="nf">atom_map1</span><span·class="p"·data-group-id="0827429270-3">(</span><span·class="ss">three</span><span·class="p"·data-group-id="0827429270-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="mi">3</span><span·class="p">;</span><span·class="w"> |
| 132 | </span><span·class="nf">atom_map1</span><span·class="p"·data-group-id="0 | 132 | </span><span·class="nf">atom_map1</span><span·class="p"·data-group-id="0827429270-4">(</span><span·class="n">Int</span><span·class="p"·data-group-id="0827429270-4">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_integer</span><span·class="p"·data-group-id="0827429270-5">(<[·...·truncated·by·diffoscope;·len:·73,·SHA:·9293198bf732fdcaf9409d11e96b5146753508f0b60f651f3fdef8ef443317ad·...·]-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Int</span><span·class="p">;</span><span·class="w"> |
| 133 | </span><span·class="nf">atom_map1</span><span·class="p"·data-group-id="0 | 133 | </span><span·class="nf">atom_map1</span><span·class="p"·data-group-id="0827429270-6">(</span><span·class="ss">four</span><span·class="p"·data-group-id="0827429270-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="mi">4</span><span·class="p">;</span><span·class="w"> |
| 134 | </span><span·class="nf">atom_map1</span><span·class="p"·data-group-id="0 | 134 | </span><span·class="nf">atom_map1</span><span·class="p"·data-group-id="0827429270-7">(</span><span·class="ss">five</span><span·class="p"·data-group-id="0827429270-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="mi">5</span><span·class="p">;</span><span·class="w"> |
| 135 | </span><span·class="nf">atom_map1</span><span·class="p"·data-group-id="0 | 135 | </span><span·class="nf">atom_map1</span><span·class="p"·data-group-id="0827429270-8">(</span><span·class="ss">six</span><span·class="p"·data-group-id="0827429270-8">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="mi">6</span><span·class="p">.</span></code></pre><p>The·problem·is·the·clause·with·the·variable·<code·class="inline">Int</code>.·As·a·variable·can·match |
| 136 | anything,·including·the·atoms·<code·class="inline">four</code>,·<code·class="inline">five</code>,·and·<code·class="inline">six</code>,·which·the·following | 136 | anything,·including·the·atoms·<code·class="inline">four</code>,·<code·class="inline">five</code>,·and·<code·class="inline">six</code>,·which·the·following |
| 137 | clauses·also·match,·the·compiler·must·generate·suboptimal·code·that·executes·as | 137 | clauses·also·match,·the·compiler·must·generate·suboptimal·code·that·executes·as |
| 138 | follows:</p><ul><li>First,·the·input·value·is·compared·to·<code·class="inline">one</code>,·<code·class="inline">two</code>,·and·<code·class="inline">three</code>·(using·a | 138 | follows:</p><ul><li>First,·the·input·value·is·compared·to·<code·class="inline">one</code>,·<code·class="inline">two</code>,·and·<code·class="inline">three</code>·(using·a |
| 139 | single·instruction·that·does·a·binary·search;·thus,·quite·efficient·even·if | 139 | single·instruction·that·does·a·binary·search;·thus,·quite·efficient·even·if |
| 140 | there·are·many·values)·to·select·which·one·of·the·first·three·clauses·to | 140 | there·are·many·values)·to·select·which·one·of·the·first·three·clauses·to |
| 141 | execute·(if·any).</li><li>If·none·of·the·first·three·clauses·match,·the·fourth·clause·match·as·a | 141 | execute·(if·any).</li><li>If·none·of·the·first·three·clauses·match,·the·fourth·clause·match·as·a |
| 142 | variable·always·matches.</li><li>If·the·guard·test·<a·href="../../erts-15.2.3/doc/html/erlang.html#is_integer/1"><code·class="inline">is_integer(Int)</code></a>·succeeds,·the·fourth | 142 | variable·always·matches.</li><li>If·the·guard·test·<a·href="../../erts-15.2.3/doc/html/erlang.html#is_integer/1"><code·class="inline">is_integer(Int)</code></a>·succeeds,·the·fourth |
| 143 | clause·is·executed.</li><li>If·the·guard·test·fails,·the·input·value·is·compared·to·<code·class="inline">four</code>,·<code·class="inline">five</code>,·and | 143 | clause·is·executed.</li><li>If·the·guard·test·fails,·the·input·value·is·compared·to·<code·class="inline">four</code>,·<code·class="inline">five</code>,·and |
| 144 | <code·class="inline">six</code>,·and·the·appropriate·clause·is·selected.·(There·is·a·<code·class="inline">function_clause</code> | 144 | <code·class="inline">six</code>,·and·the·appropriate·clause·is·selected.·(There·is·a·<code·class="inline">function_clause</code> |
| 145 | exception·if·none·of·the·values·matched.)</li></ul><p>Rewriting·to·either:</p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">atom_map2</span><span·class="p"·data-group-id=" | 145 | exception·if·none·of·the·values·matched.)</li></ul><p>Rewriting·to·either:</p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">atom_map2</span><span·class="p"·data-group-id="2005330850-1">(</span><span·class="ss">one</span><span·class="p"·data-group-id="2005330850-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="mi">1</span><span·class="p">;</span><span·class="w"> |
| 146 | </span><span·class="nf">atom_map2</span><span·class="p"·data-group-id=" | 146 | </span><span·class="nf">atom_map2</span><span·class="p"·data-group-id="2005330850-2">(</span><span·class="ss">two</span><span·class="p"·data-group-id="2005330850-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="mi">2</span><span·class="p">;</span><span·class="w"> |
| 147 | </span><span·class="nf">atom_map2</span><span·class="p"·data-group-id=" | 147 | </span><span·class="nf">atom_map2</span><span·class="p"·data-group-id="2005330850-3">(</span><span·class="ss">three</span><span·class="p"·data-group-id="2005330850-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="mi">3</span><span·class="p">;</span><span·class="w"> |
| 148 | </span><span·class="nf">atom_map2</span><span·class="p"·data-group-id=" | 148 | </span><span·class="nf">atom_map2</span><span·class="p"·data-group-id="2005330850-4">(</span><span·class="ss">four</span><span·class="p"·data-group-id="2005330850-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="mi">4</span><span·class="p">;</span><span·class="w"> |
| 149 | </span><span·class="nf">atom_map2</span><span·class="p"·data-group-id=" | 149 | </span><span·class="nf">atom_map2</span><span·class="p"·data-group-id="2005330850-5">(</span><span·class="ss">five</span><span·class="p"·data-group-id="2005330850-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="mi">5</span><span·class="p">;</span><span·class="w"> |
| 150 | </span><span·class="nf">atom_map2</span><span·class="p"·data-group-id=" | 150 | </span><span·class="nf">atom_map2</span><span·class="p"·data-group-id="2005330850-6">(</span><span·class="ss">six</span><span·class="p"·data-group-id="2005330850-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="mi">6</span><span·class="p">;</span><span·class="w"> |
| 151 | </span><span·class="nf">atom_map2</span><span·class="p"·data-group-id=" | 151 | </span><span·class="nf">atom_map2</span><span·class="p"·data-group-id="2005330850-7">(</span><span·class="n">Int</span><span·class="p"·data-group-id="2005330850-7">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_integer</span><span·class="p"·data-group-id="2005330850-8">([·...·truncated·by·diffoscope;·len:·702,·SHA:·8e956c5a9e0380ac334c992168488456aab2e253926255a92b5e065095a1a947·...·]8-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Int</span><span·class="p">;</span><span·class="w"> |
| 152 | </span><span·class="nf">atom_map3</span><span·class="p"·data-group-id=" | 152 | </span><span·class="nf">atom_map3</span><span·class="p"·data-group-id="6214233408-3">(</span><span·class="ss">one</span><span·class="p"·data-group-id="6214233408-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="mi">1</span><span·class="p">;</span><span·class="w"> |
| 153 | </span><span·class="nf">atom_map3</span><span·class="p"·data-group-id=" | 153 | </span><span·class="nf">atom_map3</span><span·class="p"·data-group-id="6214233408-4">(</span><span·class="ss">two</span><span·class="p"·data-group-id="6214233408-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="mi">2</span><span·class="p">;</span><span·class="w"> |
| 154 | </span><span·class="nf">atom_map3</span><span·class="p"·data-group-id=" | 154 | </span><span·class="nf">atom_map3</span><span·class="p"·data-group-id="6214233408-5">(</span><span·class="ss">three</span><span·class="p"·data-group-id="6214233408-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="mi">3</span><span·class="p">;</span><span·class="w"> |
| 155 | </span><span·class="nf">atom_map3</span><span·class="p"·data-group-id=" | 155 | </span><span·class="nf">atom_map3</span><span·class="p"·data-group-id="6214233408-6">(</span><span·class="ss">four</span><span·class="p"·data-group-id="6214233408-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="mi">4</span><span·class="p">;</span><span·class="w"> |
| 156 | </span><span·class="nf">atom_map3</span><span·class="p"·data-group-id=" | 156 | </span><span·class="nf">atom_map3</span><span·class="p"·data-group-id="6214233408-7">(</span><span·class="ss">five</span><span·class="p"·data-group-id="6214233408-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="mi">5</span><span·class="p">;</span><span·class="w"> |
| 157 | </span><span·class="nf">atom_map3</span><span·class="p"·data-group-id=" | 157 | </span><span·class="nf">atom_map3</span><span·class="p"·data-group-id="6214233408-8">(</span><span·class="ss">six</span><span·class="p"·data-group-id="6214233408-8">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="mi">6</span><span·class="p">.</span></code></pre><p>gives·slightl[·...·truncated·by·diffoscope;·len:·540,·SHA:·44aa2591d29df852cd0fe4d44295cbac0137c253b119508c1b22be21348b150f·...·]8-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 158 | ····</span><span·class="n">Ys</span><span·class="p">;</span><span·class="w"> | 158 | ····</span><span·class="n">Ys</span><span·class="p">;</span><span·class="w"> |
| 159 | </span><span·class="nf">map_pairs1</span><span·class="p"·data-group-id=" | 159 | </span><span·class="nf">map_pairs1</span><span·class="p"·data-group-id="3924252128-3">(</span><span·class="p">_</span><span·class="n">Map</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Xs</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3924252128-4">[</span><span·clas[·...·truncated·by·diffoscope;·len:·83,·SHA:·bd8936d8a0caed0d03fbef193fd679688e813db071ca2c648f4a5aaf26238ae1·...·]8-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 160 | ····</span><span·class="n">Xs</span><span·class="p">;</span><span·class="w"> | 160 | ····</span><span·class="n">Xs</span><span·class="p">;</span><span·class="w"> |
| 161 | </span><span·class="nf">map_pairs1</span><span·class="p"·data-group-id=" | 161 | </span><span·class="nf">map_pairs1</span><span·class="p"·data-group-id="3924252128-5">(</span><span·class="n">Map</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3924252128-6">[</span><span·class="n">X</span><span·class="p">|</span><span·class="n">Xs</span><span·class="p"·data-group-id="392[·...·truncated·by·diffoscope;·len:·286,·SHA:·996d224cc141f9e0e00f270ea3d5b43a505cbb55ce3d600c9270e35325dd5964·...·]8-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 162 | ····</span><span·class="p"·data-group-id=" | 162 | ····</span><span·class="p"·data-group-id="3924252128-8">[</span><span·class="n">Map</span><span·class="p"·data-group-id="3924252128-9">(</span><span·class="n">X</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Y</span><span·class="p"·data-group-id="3924252128-9">)</span><span·[·...·truncated·by·diffoscope;·len:·372,·SHA:·5c3ec0f9193cd58588fe829580a9e1e9c4a894c75601571b5263c02646575a94·...·]8-8">]</span><span·class="p">.</span></code></pre><p>The·first·argument·is·<em>not</em>·a·problem.·It·is·variable,·but·it·is·a·variable·in |
| 163 | all·clauses.·The·problem·is·the·variable·in·the·second·argument,·<code·class="inline">Xs</code>,·in·the | 163 | all·clauses.·The·problem·is·the·variable·in·the·second·argument,·<code·class="inline">Xs</code>,·in·the |
| 164 | middle·clause.·Because·the·variable·can·match·anything,·the·compiler·is·not | 164 | middle·clause.·Because·the·variable·can·match·anything,·the·compiler·is·not |
| 165 | allowed·to·rearrange·the·clauses,·but·must·generate·code·that·matches·them·in | 165 | allowed·to·rearrange·the·clauses,·but·must·generate·code·that·matches·them·in |
| 166 | the·order·written.</p><p>If·the·function·is·rewritten·as·follows,·the·compiler·is·free·to·rearrange·the | 166 | the·order·written.</p><p>If·the·function·is·rewritten·as·follows,·the·compiler·is·free·to·rearrange·the |
| 167 | clauses:</p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">map_pairs2</span><span·class="p"·data-group-id=" | 167 | clauses:</p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">map_pairs2</span><span·class="p"·data-group-id="9003524095-1">(</span><span·class="p">_</span><span·class="n">Map</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9003524095-2">[</span><span·class="p"·data-group-id="9003524095-2">]</span><span·class="p">,</span><span·[·...·truncated·by·diffoscope;·len:·84,·SHA:·2e7b53751e6a06e03e02f33af5978e543790fbb2062e07453ea855f680d8ece4·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 168 | ····</span><span·class="n">Ys</span><span·class="p">;</span><span·class="w"> | 168 | ····</span><span·class="n">Ys</span><span·class="p">;</span><span·class="w"> |
| 169 | </span><span·class="nf">map_pairs2</span><span·class="p"·data-group-id=" | 169 | </span><span·class="nf">map_pairs2</span><span·class="p"·data-group-id="9003524095-3">(</span><span·class="p">_</span><span·class="n">Map</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9003524095-4">[</span><span·class="p">_</span><span·class="p">|</span><span·class="p">_</span><span·class[·...·truncated·by·diffoscope;·len:·310,·SHA:·a0ff1a1714b09570b902ca6346959c89e162188c93b2670d30bd8d5bcaa2fd31·...·]-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 170 | ····</span><span·class="n">Xs</span><span·class="p">;</span><span·class="w"> | 170 | ····</span><span·class="n">Xs</span><span·class="p">;</span><span·class="w"> |
| 171 | </span><span·class="nf">map_pairs2</span><span·class="p"·data-group-id=" | 171 | </span><span·class="nf">map_pairs2</span><span·class="p"·data-group-id="9003524095-6">(</span><span·class="n">Map</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9003524095-7">[</span><span·class="n">X</span><span·class="p">|</span><span·class="n">Xs</span><span·class="p"·data-group-id="900[·...·truncated·by·diffoscope;·len:·287,·SHA:·819428b5f0f5408ea10255369ac998f75b1c1761b314e12bde78f5ebe7bba8b7·...·]-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 172 | ····</span><span·class="p"·data-group-id=" | 172 | ····</span><span·class="p"·data-group-id="9003524095-9">[</span><span·class="n">Map</span><span·class="p"·data-group-id="9003524095-10">(</span><span·class="n">X</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Y</span><span·class="p"·data-group-id="9003524095-10">)</span><spa[·...·truncated·by·diffoscope;·len:·898,·SHA:·8d81444a509b14f752065db55104e267186672ba124bb1cb732872965b7d5249·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 173 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="n">Xs0</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> | 173 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="n">Xs0</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 174 | » </span><span·class="p"·data-group-id=" | 174 | » </span><span·class="p"·data-group-id="3933525522-2">[</span><span·class="n">X</span><span·class="p">|</span><span·class="n">Xs</span><span·class="p"·data-group-id="3933525522-2">]</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 175 | » ····</span><span·class="k">case</span><span·class="w">·</span><span·class="n">Ys0</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> | 175 | » ····</span><span·class="k">case</span><span·class="w">·</span><span·class="n">Ys0</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 176 | » » </span><span·class="p"·data-group-id=" | 176 | » » </span><span·class="p"·data-group-id="3933525522-3">[</span><span·class="n">Y</span><span·class="p">|</span><span·class="n">Ys</span><span·class="p"·data-group-id="3933525522-3">]</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 177 | » » ····</span><span·class="p"·data-group-id=" | 177 | » » ····</span><span·class="p"·data-group-id="3933525522-4">[</span><span·class="n">Map</span><span·class="p"·data-group-id="3933525522-5">(</span><span·class="n">X</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Y</span><span·class="p"·data-group-id="3933525522-5">)</span><span·[·...·truncated·by·diffoscope;·len:·379,·SHA:·e01868a00d8655174f908d50708136d4092cbe9f6d988d4562a8ecf27635e4a4·...·]-4">]</span><span·class="p">;</span><span·class="w"> |
| 178 | » » </span><span·class="p"·data-group-id=" | 178 | » » </span><span·class="p"·data-group-id="3933525522-7">[</span><span·class="p"·data-group-id="3933525522-7">]</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 179 | » » ····</span><span·class="n">Xs0</span><span·class="w"> | 179 | » » ····</span><span·class="n">Xs0</span><span·class="w"> |
| 180 | » ····</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> | 180 | » ····</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> |
| 181 | » </span><span·class="p"·data-group-id=" | 181 | » </span><span·class="p"·data-group-id="3933525522-8">[</span><span·class="p"·data-group-id="3933525522-8">]</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 182 | » ····</span><span·class="n">Ys0</span><span·class="w"> | 182 | » ····</span><span·class="n">Ys0</span><span·class="w"> |
| 183 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>This·is·slightly·faster·for·probably·the·most·common·case·that·the·input·lists | 183 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>This·is·slightly·faster·for·probably·the·most·common·case·that·the·input·lists |
| 184 | are·not·empty·or·very·short.·(Another·advantage·is·that·Dialyzer·can·deduce·a | 184 | are·not·empty·or·very·short.·(Another·advantage·is·that·Dialyzer·can·deduce·a |
| 185 | better·type·for·the·<code·class="inline">Xs</code>·variable.)</p><h2·id="function-calls"·class="section-heading"> | 185 | better·type·for·the·<code·class="inline">Xs</code>·variable.)</p><h2·id="function-calls"·class="section-heading"> |
| 186 | ··<a·href="#function-calls"·class="hover-link"> | 186 | ··<a·href="#function-calls"·class="hover-link"> |
| 187 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 187 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 188 | ··</a> | 188 | ··</a> |
| Offset 119, 45 lines modified | Offset 119, 45 lines modified | ||
| 119 | ··<a·href="#creating-an-erlang-process"·class="hover-link"> | 119 | ··<a·href="#creating-an-erlang-process"·class="hover-link"> |
| 120 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 120 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 121 | ··</a> | 121 | ··</a> |
| 122 | ··<span·class="text">Creating·an·Erlang·Process</span> | 122 | ··<span·class="text">Creating·an·Erlang·Process</span> |
| 123 | </h2> | 123 | </h2> |
| 124 | <p>An·Erlang·process·is·lightweight·compared·to·threads·and·processes·in·operating | 124 | <p>An·Erlang·process·is·lightweight·compared·to·threads·and·processes·in·operating |
| 125 | systems.</p><p>A·newly·spawned·Erlang·process·uses·327·words·of·memory.·The·size·can·be·found | 125 | systems.</p><p>A·newly·spawned·Erlang·process·uses·327·words·of·memory.·The·size·can·be·found |
| 126 | as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Erlang</span><span·class="o">/</span><span·class="n">OTP</span><span·class="w">·</span><span·class="mi">27</span><span·class="w">·</span><span·class="p"·data-group-id=" | 126 | as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Erlang</span><span·class="o">/</span><span·class="n">OTP</span><span·class="w">·</span><span·class="mi">27</span><span·class="w">·</span><span·class="p"·data-group-id="8023171581-1">[</span><span·class="ss">erts</span><span·class="o">-</span><span·class="mf">14.2</span><span·class="p">.</span><span·class="mi">3</span><span·class="p"·data-group-id="8023171581-1">]</span><span·class="w">·</span><span·class="p"·data-group-i[·...·truncated·by·diffoscope;·len:·1122,·SHA:·b63c0f9b8b997feae2ee7d7100bca5842c946a93035684f70f78cb0ec927144d·...·]-6">]</span><span·class="w"> |
| 127 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V14</span><span·class="p">.</span><span·class="mf">2.3</span><span·class="w">·</span><span·class="p"·data-group-id=" | 127 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V14</span><span·class="p">.</span><span·class="mf">2.3</span><span·class="w">·</span><span·class="p"·data-group-id="8023171581-7">(</span><span·class="ss">press</span><span·class="w">·</span><span·class="n">Ctrl</span><span·class="o">+</span><span·class="n">G</span><span·class="w">·</span><span·class="ss">to</span><span·class="w">·</span><span·class="ss">abort</span><sp[·...·truncated·by·diffoscope;·len:·399,·SHA:·84a6be0c8359758224600648eceec84f21c06e2babc6f587dd718486ab2c5a91·...·]-7">)</span><span·class="gp·unselectable"> |
| 128 | 1>·</span><span·class="n">Fun</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 128 | 1>·</span><span·class="n">Fun</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="8023171581-9">(</span><span·class="p"·data-group-id="8023171581-9">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="k">receive</span><span·class="w">·</span><span·class="k">after</span><span·class="w">·</span><span·class="ss">infinity</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="w">·</span><span·class="k">end</span><span·class="w">·</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 129 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="o"><</span><span·class="ss">erl_eval</span><span·class="p">.</span><span·class="mf">43.39164016</span><span·class="o">></span><span·class="gp·unselectable"> | 129 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="o"><</span><span·class="ss">erl_eval</span><span·class="p">.</span><span·class="mf">43.39164016</span><span·class="o">></span><span·class="gp·unselectable"> |
| 130 | 2>·</span><span·class="p"·data-group-id=" | 130 | 2>·</span><span·class="p"·data-group-id="8023171581-10">{</span><span·class="p">_</span><span·class="p">,</span><span·class="n">Bytes</span><span·class="p"·data-group-id="8023171581-10">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">process_info</[·...·truncated·by·diffoscope;·len:·341,·SHA:·83a5447ae0f94530a87c18796fc3825f9d76cb496681cc3410cbb41020775949·...·]-11">)</span><span·class="p">.</span><span·class="w"> |
| 131 | </span><span·class="p"·data-group-id=" | 131 | </span><span·class="p"·data-group-id="8023171581-13">{</span><span·class="nb">memory</span><span·class="p">,</span><span·class="mi">2616</span><span·class="p"·data-group-id="8023171581-13">}</span><span·class="gp·unselectable"> |
| 132 | 3>·</span><span·class="n">Bytes</span><span·class="w">·</span><span·class="ow">div</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">system_info</span><span·class="p"·data-group-id=" | 132 | 3>·</span><span·class="n">Bytes</span><span·class="w">·</span><span·class="ow">div</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">system_info</span><span·class="p"·data-group-id="8023171581-14">(</span><span·class="ss">wordsize</span><span·class="p"·data-group-id="8023171581-14">)</span><span·class="p">.</span><span·class="w"> |
| 133 | </span><span·class="mi">327</span></code></pre><p>The·size·includes·233·words·for·the·heap·area·(which·includes·the·stack).·The | 133 | </span><span·class="mi">327</span></code></pre><p>The·size·includes·233·words·for·the·heap·area·(which·includes·the·stack).·The |
| 134 | garbage·collector·increases·the·heap·as·needed.</p><p>The·main·(outer)·loop·for·a·process·<em>must</em>·be·tail-recursive.·Otherwise,·the | 134 | garbage·collector·increases·the·heap·as·needed.</p><p>The·main·(outer)·loop·for·a·process·<em>must</em>·be·tail-recursive.·Otherwise,·the |
| 135 | stack·grows·until·the·process·terminates.</p><p><strong>DO·NOT</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">loop</span><span·class="p"·data-group-id=" | 135 | stack·grows·until·the·process·terminates.</p><p><strong>DO·NOT</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">loop</span><span·class="p"·data-group-id="7486053424-1">(</span><span·class="p"·data-group-id="7486053424-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 136 | ··</span><span·class="k">receive</span><span·class="w"> | 136 | ··</span><span·class="k">receive</span><span·class="w"> |
| 137 | ·····</span><span·class="p"·data-group-id=" | 137 | ·····</span><span·class="p"·data-group-id="7486053424-2">{</span><span·class="ss">sys</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p"·data-group-id="7486053424-2">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 138 | ·········</span><span·class="nf">handle_sys_msg</span><span·class="p"·data-group-id=" | 138 | ·········</span><span·class="nf">handle_sys_msg</span><span·class="p"·data-group-id="7486053424-3">(</span><span·class="n">Msg</span><span·class="p"·data-group-id="7486053424-3">)</span><span·class="p">,</span><span·class="w"> |
| 139 | ·········</span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 139 | ·········</span><span·class="nf">loop</span><span·class="p"·data-group-id="7486053424-4">(</span><span·class="p"·data-group-id="7486053424-4">)</span><span·class="p">;</span><span·class="w"> |
| 140 | ·····</span><span·class="p"·data-group-id=" | 140 | ·····</span><span·class="p"·data-group-id="7486053424-5">{</span><span·class="n">From</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p"·data-group-id="7486053424-5">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 141 | ··········</span><span·class="n">Reply</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">handle_msg</span><span·class="p"·data-group-id=" | 141 | ··········</span><span·class="n">Reply</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">handle_msg</span><span·class="p"·data-group-id="7486053424-6">(</span><span·class="n">Msg</span><span·class="p"·data-group-id="7486053424-6">)</span><span·class="p">,</span><span·class="w"> |
| 142 | ··········</span><span·class="n">From</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="n">Reply</span><span·class="p">,</span><span·class="w"> | 142 | ··········</span><span·class="n">From</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="n">Reply</span><span·class="p">,</span><span·class="w"> |
| 143 | ··········</span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 143 | ··········</span><span·class="nf">loop</span><span·class="p"·data-group-id="7486053424-7">(</span><span·class="p"·data-group-id="7486053424-7">)</span><span·class="w"> |
| 144 | ··</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 144 | ··</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 145 | ··</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 145 | ··</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="7486053424-8">(</span><span·class="s">"Message·is·processed</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7486053424-9">[</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·65,·SHA:·b6cf2455fb42c5ba0a2e8afbd2f5a3ef8ec81549c2b50ee2e0884bf215eb0485·...·]-8">)</span><span·class="p">.</span></code></pre><p>The·call·to·<a·href="../../lib/stdlib-6.2.1/doc/html/io.html#format/2"><code·class="inline">io:format/2</code></a>·will·never·be·executed,·but·a·return·address·will |
| 146 | still·be·pushed·to·the·stack·each·time·<code·class="inline">loop/0</code>·is·called·recursively.·The | 146 | still·be·pushed·to·the·stack·each·time·<code·class="inline">loop/0</code>·is·called·recursively.·The |
| 147 | correct·tail-recursive·version·of·the·function·looks·as·follows:</p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">loop</span><span·class="p"·data-group-id="5 | 147 | correct·tail-recursive·version·of·the·function·looks·as·follows:</p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">loop</span><span·class="p"·data-group-id="5109814511-1">(</span><span·class="p"·data-group-id="5109814511-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 148 | ···</span><span·class="k">receive</span><span·class="w"> | 148 | ···</span><span·class="k">receive</span><span·class="w"> |
| 149 | ······</span><span·class="p"·data-group-id="5 | 149 | ······</span><span·class="p"·data-group-id="5109814511-2">{</span><span·class="ss">sys</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p"·data-group-id="5109814511-2">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 150 | ·········</span><span·class="nf">handle_sys_msg</span><span·class="p"·data-group-id="5 | 150 | ·········</span><span·class="nf">handle_sys_msg</span><span·class="p"·data-group-id="5109814511-3">(</span><span·class="n">Msg</span><span·class="p"·data-group-id="5109814511-3">)</span><span·class="p">,</span><span·class="w"> |
| 151 | ·········</span><span·class="nf">loop</span><span·class="p"·data-group-id="5 | 151 | ·········</span><span·class="nf">loop</span><span·class="p"·data-group-id="5109814511-4">(</span><span·class="p"·data-group-id="5109814511-4">)</span><span·class="p">;</span><span·class="w"> |
| 152 | ······</span><span·class="p"·data-group-id="5 | 152 | ······</span><span·class="p"·data-group-id="5109814511-5">{</span><span·class="n">From</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p"·data-group-id="5109814511-5">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 153 | ·········</span><span·class="n">Reply</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">handle_msg</span><span·class="p"·data-group-id="5 | 153 | ·········</span><span·class="n">Reply</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">handle_msg</span><span·class="p"·data-group-id="5109814511-6">(</span><span·class="n">Msg</span><span·class="p"·data-group-id="5109814511-6">)</span><span·class="p">,</span><span·class="w"> |
| 154 | ·········</span><span·class="n">From</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="n">Reply</span><span·class="p">,</span><span·class="w"> | 154 | ·········</span><span·class="n">From</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="n">Reply</span><span·class="p">,</span><span·class="w"> |
| 155 | ·········</span><span·class="nf">loop</span><span·class="p"·data-group-id="5 | 155 | ·········</span><span·class="nf">loop</span><span·class="p"·data-group-id="5109814511-7">(</span><span·class="p"·data-group-id="5109814511-7">)</span><span·class="w"> |
| 156 | ·</span><span·class="k">end</span><span·class="p">.</span></code></pre><h3·id="initial-heap-size"·class="section-heading"> | 156 | ·</span><span·class="k">end</span><span·class="p">.</span></code></pre><h3·id="initial-heap-size"·class="section-heading"> |
| 157 | ··<a·href="#initial-heap-size"·class="hover-link"> | 157 | ··<a·href="#initial-heap-size"·class="hover-link"> |
| 158 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 158 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 159 | ··</a> | 159 | ··</a> |
| 160 | ··<span·class="text">Initial·Heap·Size</span> | 160 | ··<span·class="text">Initial·Heap·Size</span> |
| 161 | </h3> | 161 | </h3> |
| 162 | <p>The·default·initial·heap·size·of·233·words·is·quite·conservative·to·support | 162 | <p>The·default·initial·heap·size·of·233·words·is·quite·conservative·to·support |
| Offset 189, 30 lines modified | Offset 189, 30 lines modified | ||
| 189 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 189 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 190 | ··</a> | 190 | ··</a> |
| 191 | ··<span·class="text">Receiving·messages</span> | 191 | ··<span·class="text">Receiving·messages</span> |
| 192 | </h2> | 192 | </h2> |
| 193 | <p>The·cost·of·receiving·messages·depends·on·how·complicated·the·<code·class="inline">receive</code> | 193 | <p>The·cost·of·receiving·messages·depends·on·how·complicated·the·<code·class="inline">receive</code> |
| 194 | expression·is.·A·simple·expression·that·matches·any·message·is·very·cheap | 194 | expression·is.·A·simple·expression·that·matches·any·message·is·very·cheap |
| 195 | because·it·retrieves·the·first·message·in·the·message·queue:</p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">receive</span><span·class="w"> | 195 | because·it·retrieves·the·first·message·in·the·message·queue:</p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">receive</span><span·class="w"> |
| 196 | ····</span><span·class="n">Message</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">handle_msg</span><span·class="p"·data-group-id=" | 196 | ····</span><span·class="n">Message</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">handle_msg</span><span·class="p"·data-group-id="9315135977-1">(</span><span·class="n">Message</span><span·class="p"·data-group-id="9315135977-1">)</span><span·class="w"> |
| 197 | </span><span·class="k">end</span><span·class="p">.</span></code></pre><p>However,·this·is·not·always·convenient:·we·can·receive·a·message·that·we·do·not | 197 | </span><span·class="k">end</span><span·class="p">.</span></code></pre><p>However,·this·is·not·always·convenient:·we·can·receive·a·message·that·we·do·not |
| 198 | know·how·to·handle·at·this·point,·so·it·is·common·to·only·match·the·messages·we | 198 | know·how·to·handle·at·this·point,·so·it·is·common·to·only·match·the·messages·we |
| 199 | expect:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">receive</span><span·class="w"> | 199 | expect:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">receive</span><span·class="w"> |
| 200 | ····</span><span·class="p"·data-group-id=" | 200 | ····</span><span·class="p"·data-group-id="4604726514-1">{</span><span·class="n">Tag</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Message</span><span·class="p"·data-group-id="4604726514-1">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·157,·SHA:·ec0edc036604636c5d655b2ba2d3c65698ca1904bfbff2c03f2f3002bac3f3a4·...·]-2">)</span><span·class="w"> |
| 201 | </span><span·class="k">end</span><span·class="p">.</span></code></pre><p>While·this·is·convenient·it·means·that·the·entire·message·queue·must·be·searched | 201 | </span><span·class="k">end</span><span·class="p">.</span></code></pre><p>While·this·is·convenient·it·means·that·the·entire·message·queue·must·be·searched |
| 202 | until·it·finds·a·matching·message.·This·is·very·expensive·for·processes·with | 202 | until·it·finds·a·matching·message.·This·is·very·expensive·for·processes·with |
| 203 | long·message·queues,·so·there·is·an·optimization·for·the·common·case·of | 203 | long·message·queues,·so·there·is·an·optimization·for·the·common·case·of |
| 204 | sending·a·request·and·waiting·for·a·response·shortly·after:</p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">MRef</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">monitor</span><span·class="p"·data-group-id=" | 204 | sending·a·request·and·waiting·for·a·response·shortly·after:</p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">MRef</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">monitor</span><span·class="p"·data-group-id="0328136303-1">(</span><span·class="ss">process</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Process</span><span·class="p"·data-group-id="0328136303-1">)</span><span·class="p">,</span><span·class="w"> |
| 205 | </span><span·class="n">Process</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 205 | </span><span·class="n">Process</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="0328136303-2">{</span><span·class="nf">self</span><span·class="p"·data-group-id="0328136303-3">(</span><span·class="p"·data-group-id="0328136303-3">)</span><span·class="p">,</span><span·class="w">·</span><span·class="n">MRef</span><span·class="p">,</span><[·...·truncated·by·diffoscope;·len:·94,·SHA:·aa32242951e1934cad6ccdda62a169f9777961a8059645a1a3df7d303a3c626b·...·]-2">}</span><span·class="p">,</span><span·class="w"> |
| 206 | </span><span·class="k">receive</span><span·class="w"> | 206 | </span><span·class="k">receive</span><span·class="w"> |
| 207 | ····</span><span·class="p"·data-group-id=" | 207 | ····</span><span·class="p"·data-group-id="0328136303-4">{</span><span·class="n">MRef</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reply</span><span·class="p"·data-group-id="0328136303-4">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 208 | ········</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">demonitor</span><span·class="p"·data-group-id=" | 208 | ········</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">demonitor</span><span·class="p"·data-group-id="0328136303-5">(</span><span·class="n">MRef</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0328136303-6">[</span><span·class="ss">flush</span><span·class="p"·data-group-id="0328136303-6">]</span><span·class="p"·data-gro[·...·truncated·by·diffoscope;·len:·17,·SHA:·d8c38d797a1bef12c00c2402739214ad97c25c8bc83cd1d44dd69b62e27b3480·...·]-5">)</span><span·class="p">,</span><span·class="w"> |
| 209 | ········</span><span·class="nf">handle_reply</span><span·class="p"·data-group-id=" | 209 | ········</span><span·class="nf">handle_reply</span><span·class="p"·data-group-id="0328136303-7">(</span><span·class="n">Reply</span><span·class="p"·data-group-id="0328136303-7">)</span><span·class="p">;</span><span·class="w"> |
| 210 | ····</span><span·class="p"·data-group-id=" | 210 | ····</span><span·class="p"·data-group-id="0328136303-8">{</span><span·class="ss">'DOWN'</span><span·class="p">,</span><span·class="w">·</span><span·class="n">MRef</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·141,·SHA:·86cde906290630c3fb6f7fbc2c23185221322403fe930a9ffd4e01c59a2b09a0·...·]-8">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 211 | ········</span><span·class="nf">handle_error</span><span·class="p"·data-group-id=" | 211 | ········</span><span·class="nf">handle_error</span><span·class="p"·data-group-id="0328136303-9">(</span><span·class="n">Reason</span><span·class="p"·data-group-id="0328136303-9">)</span><span·class="w"> |
| 212 | </span><span·class="k">end</span><span·class="p">.</span></code></pre><p>Since·the·compiler·knows·that·the·reference·created·by | 212 | </span><span·class="k">end</span><span·class="p">.</span></code></pre><p>Since·the·compiler·knows·that·the·reference·created·by |
| 213 | <a·href="../../erts-15.2.3/doc/html/erlang.html#monitor/2"><code·class="inline">monitor/2</code></a>·cannot·exist·before·the·call·(since·it·is·a·globally | 213 | <a·href="../../erts-15.2.3/doc/html/erlang.html#monitor/2"><code·class="inline">monitor/2</code></a>·cannot·exist·before·the·call·(since·it·is·a·globally |
| 214 | unique·identifier),·and·that·the·<code·class="inline">receive</code>·only·matches·messages·that·contain | 214 | unique·identifier),·and·that·the·<code·class="inline">receive</code>·only·matches·messages·that·contain |
| 215 | said·reference,·it·will·tell·the·emulator·to·search·only·the·messages·that | 215 | said·reference,·it·will·tell·the·emulator·to·search·only·the·messages·that |
| 216 | arrived·after·the·call·to·<a·href="../../erts-15.2.3/doc/html/erlang.html#monitor/2"><code·class="inline">monitor/2</code></a>.</p><p>The·above·is·a·simple·example·where·one·is·but·guaranteed·that·the·optimization | 216 | arrived·after·the·call·to·<a·href="../../erts-15.2.3/doc/html/erlang.html#monitor/2"><code·class="inline">monitor/2</code></a>.</p><p>The·above·is·a·simple·example·where·one·is·but·guaranteed·that·the·optimization |
| 217 | will·take,·but·what·about·more·complicated·code?</p><p><a·href=""·id="recv_opt_info"></a></p><h3·id="option-recv_opt_info"·class="section-heading"> | 217 | will·take,·but·what·about·more·complicated·code?</p><p><a·href=""·id="recv_opt_info"></a></p><h3·id="option-recv_opt_info"·class="section-heading"> |
| 218 | ··<a·href="#option-recv_opt_info"·class="hover-link"> | 218 | ··<a·href="#option-recv_opt_info"·class="hover-link"> |
| Offset 228, 101 lines modified | Offset 228, 101 lines modified | ||
| 228 | </span><span·class="ss">efficiency_guide</span><span·class="p">.</span><span·class="nc">erl</span><span·class="p">:</span><span·class="mi">200</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Warning</span><span·class="p">:</span><span·class="w">·</span><span·class="n">NOT</span><span·class="w">·</span><span·class="n">OPTIMIZED</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">all</span><span·class="w">·</span><span·class="ss">clauses</span><span·class="w">·</span><span·class="ss">do</span><span·class="w">·</span><span·class="ow">not</span><span·class="w">·</span><span·class="ss">match</span><span·class="w">·</span><span·class="ss">a</span><span·class="w">·</span><span·class="ss">suitable</span><span·class="w">·</span><span·class="ss">reference</span><span·class="w"> | 228 | </span><span·class="ss">efficiency_guide</span><span·class="p">.</span><span·class="nc">erl</span><span·class="p">:</span><span·class="mi">200</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Warning</span><span·class="p">:</span><span·class="w">·</span><span·class="n">NOT</span><span·class="w">·</span><span·class="n">OPTIMIZED</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">all</span><span·class="w">·</span><span·class="ss">clauses</span><span·class="w">·</span><span·class="ss">do</span><span·class="w">·</span><span·class="ow">not</span><span·class="w">·</span><span·class="ss">match</span><span·class="w">·</span><span·class="ss">a</span><span·class="w">·</span><span·class="ss">suitable</span><span·class="w">·</span><span·class="ss">reference</span><span·class="w"> |
| 229 | </span><span·class="ss">efficiency_guide</span><span·class="p">.</span><span·class="nc">erl</span><span·class="p">:</span><span·class="mi">206</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Warning</span><span·class="p">:</span><span·class="w">·</span><span·class="n">OPTIMIZED</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">reference</span><span·class="w">·</span><span·class="ss">used</span><span·class="w">·</span><span·class="ss">to</span><span·class="w">·</span><span·class="ss">mark</span><span·class="w">·</span><span·class="ss">a</span><span·class="w">·</span><span·class="ss">message</span><span·class="w">·</span><span·class="ss">queue</span><span·class="w">·</span><span·class="ss">position</span><span·class="w"> | 229 | </span><span·class="ss">efficiency_guide</span><span·class="p">.</span><span·class="nc">erl</span><span·class="p">:</span><span·class="mi">206</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Warning</span><span·class="p">:</span><span·class="w">·</span><span·class="n">OPTIMIZED</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">reference</span><span·class="w">·</span><span·class="ss">used</span><span·class="w">·</span><span·class="ss">to</span><span·class="w">·</span><span·class="ss">mark</span><span·class="w">·</span><span·class="ss">a</span><span·class="w">·</span><span·class="ss">message</span><span·class="w">·</span><span·class="ss">queue</span><span·class="w">·</span><span·class="ss">position</span><span·class="w"> |
| 230 | </span><span·class="ss">efficiency_guide</span><span·class="p">.</span><span·class="nc">erl</span><span·class="p">:</span><span·class="mi">208</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Warning</span><span·class="p">:</span><span·class="w">·</span><span·class="n">OPTIMIZED</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">all</span><span·class="w">·</span><span·class="ss">clauses</span><span·class="w">·</span><span·class="ss">match</span><span·class="w">·</span><span·class="ss">reference</span><span·class="w">·</span><span·class="ss">created</span><span·class="w">·</span><span·class="ss">by</span><span·class="w">·</span><span·class="nb">monitor</span><span·class="p">/</span><span·class="mi">2</span><span·class="w">·</span><span·class="ss">at</span><span·class="w">·</span><span·class="ss">efficiency_guide</span><span·class="p">.</span><span·class="nc">erl</span><span·class="p">:</span><span·class="mi">206</span><span·class="w"> | 230 | </span><span·class="ss">efficiency_guide</span><span·class="p">.</span><span·class="nc">erl</span><span·class="p">:</span><span·class="mi">208</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Warning</span><span·class="p">:</span><span·class="w">·</span><span·class="n">OPTIMIZED</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">all</span><span·class="w">·</span><span·class="ss">clauses</span><span·class="w">·</span><span·class="ss">match</span><span·class="w">·</span><span·class="ss">reference</span><span·class="w">·</span><span·class="ss">created</span><span·class="w">·</span><span·class="ss">by</span><span·class="w">·</span><span·class="nb">monitor</span><span·class="p">/</span><span·class="mi">2</span><span·class="w">·</span><span·class="ss">at</span><span·class="w">·</span><span·class="ss">efficiency_guide</span><span·class="p">.</span><span·class="nc">erl</span><span·class="p">:</span><span·class="mi">206</span><span·class="w"> |
| 231 | </span><span·class="ss">efficiency_guide</span><span·class="p">.</span><span·class="nc">erl</span><span·class="p">:</span><span·class="mi">219</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Warning</span><span·class="p">:</span><span·class="w">·</span><span·class="n">INFO</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">passing</span><span·class="w">·</span><span·class="ss">reference</span><span·class="w">·</span><span·class="ss">created</span><span·class="w">·</span><span·class="ss">by</span><span·class="w">·</span><span·class="ss">make_ref</span><span·class="p">/</span><span·class="mi">0</span><span·class="w">·</span><span·class="ss">at</span><span·class="w">·</span><span·class="ss">efficiency_guide</span><span·class="p">.</span><span·class="nc">erl</span><span·class="p">:</span><span·class="mi">218</span><span·class="w"> | 231 | </span><span·class="ss">efficiency_guide</span><span·class="p">.</span><span·class="nc">erl</span><span·class="p">:</span><span·class="mi">219</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Warning</span><span·class="p">:</span><span·class="w">·</span><span·class="n">INFO</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">passing</span><span·class="w">·</span><span·class="ss">reference</span><span·class="w">·</span><span·class="ss">created</span><span·class="w">·</span><span·class="ss">by</span><span·class="w">·</span><span·class="ss">make_ref</span><span·class="p">/</span><span·class="mi">0</span><span·class="w">·</span><span·class="ss">at</span><span·class="w">·</span><span·class="ss">efficiency_guide</span><span·class="p">.</span><span·class="nc">erl</span><span·class="p">:</span><span·class="mi">218</span><span·class="w"> |
| 232 | </span><span·class="ss">efficiency_guide</span><span·class="p">.</span><span·class="nc">erl</span><span·class="p">:</span><span·class="mi">222</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Warning</span><span·class="p">:</span><span·class="w">·</span><span·class="n">OPTIMIZED</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">all</span><span·class="w">·</span><span·class="ss">clauses</span><span·class="w">·</span><span·class="ss">match</span><span·class="w">·</span><span·class="ss">reference</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">function</span><span·class="w">·</span><span·class="ss">parameter</span><span·class="w">·</span><span·class="mi">1</span></code></pre><p>To·make·it·clearer·exactly·what·code·the·warnings·refer·to,·the·warnings·in·the | 232 | </span><span·class="ss">efficiency_guide</span><span·class="p">.</span><span·class="nc">erl</span><span·class="p">:</span><span·class="mi">222</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Warning</span><span·class="p">:</span><span·class="w">·</span><span·class="n">OPTIMIZED</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">all</span><span·class="w">·</span><span·class="ss">clauses</span><span·class="w">·</span><span·class="ss">match</span><span·class="w">·</span><span·class="ss">reference</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">function</span><span·class="w">·</span><span·class="ss">parameter</span><span·class="w">·</span><span·class="mi">1</span></code></pre><p>To·make·it·clearer·exactly·what·code·the·warnings·refer·to,·the·warnings·in·the |
| 233 | following·examples·are·inserted·as·comments·after·the·clause·they·refer·to,·for | 233 | following·examples·are·inserted·as·comments·after·the·clause·they·refer·to,·for |
| 234 | example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·DO</span><span·class="w"> | 234 | example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·DO</span><span·class="w"> |
| 235 | </span><span·class="nf">simple_receive</span><span·class="p"·data-group-id="8 | 235 | </span><span·class="nf">simple_receive</span><span·class="p"·data-group-id="2876576457-1">(</span><span·class="p"·data-group-id="2876576457-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 236 | </span><span·class="c1">%%·efficiency_guide.erl:194:·Warning:·INFO:·not·a·selective·receive,·this·is·always·fast</span><span·class="w"> | 236 | </span><span·class="c1">%%·efficiency_guide.erl:194:·Warning:·INFO:·not·a·selective·receive,·this·is·always·fast</span><span·class="w"> |
| 237 | </span><span·class="k">receive</span><span·class="w"> | 237 | </span><span·class="k">receive</span><span·class="w"> |
| 238 | ····</span><span·class="n">Message</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">handle_msg</span><span·class="p"·data-group-id="8 | 238 | ····</span><span·class="n">Message</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">handle_msg</span><span·class="p"·data-group-id="2876576457-2">(</span><span·class="n">Message</span><span·class="p"·data-group-id="2876576457-2">)</span><span·class="w"> |
| 239 | </span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 239 | </span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 240 | </span><span·class="c1">%%·DO·NOT,·unless·Tag·is·known·to·be·a·suitable·reference:·see</span><span·class="w"> | 240 | </span><span·class="c1">%%·DO·NOT,·unless·Tag·is·known·to·be·a·suitable·reference:·see</span><span·class="w"> |
| 241 | </span><span·class="c1">%%·cross_function_receive/0·further·down.</span><span·class="w"> | 241 | </span><span·class="c1">%%·cross_function_receive/0·further·down.</span><span·class="w"> |
| 242 | </span><span·class="nf">selective_receive</span><span·class="p"·data-group-id="8 | 242 | </span><span·class="nf">selective_receive</span><span·class="p"·data-group-id="2876576457-3">(</span><span·class="n">Tag</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Message</span><span·class="p"·data-group-id="2876576457-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 243 | </span><span·class="c1">%%·efficiency_guide.erl:200:·Warning:·NOT·OPTIMIZED:·all·clauses·do·not·match·a·suitable·reference</span><span·class="w"> | 243 | </span><span·class="c1">%%·efficiency_guide.erl:200:·Warning:·NOT·OPTIMIZED:·all·clauses·do·not·match·a·suitable·reference</span><span·class="w"> |
| 244 | </span><span·class="k">receive</span><span·class="w"> | 244 | </span><span·class="k">receive</span><span·class="w"> |
| 245 | ····</span><span·class="p"·data-group-id="8 | 245 | ····</span><span·class="p"·data-group-id="2876576457-4">{</span><span·class="n">Tag</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Message</span><span·class="p"·data-group-id="2876576457-4">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·157,·SHA:·f5305a279f7aa93c7140ebf150bd59afa7faced779b8242ca01b47decc73234b·...·]-5">)</span><span·class="w"> |
| 246 | </span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 246 | </span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 247 | </span><span·class="c1">%%·DO</span><span·class="w"> | 247 | </span><span·class="c1">%%·DO</span><span·class="w"> |
| 248 | </span><span·class="nf">optimized_receive</span><span·class="p"·data-group-id="8 | 248 | </span><span·class="nf">optimized_receive</span><span·class="p"·data-group-id="2876576457-6">(</span><span·class="n">Process</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Request</span><span·class="p"·data-group-id="2876576457-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 249 | </span><span·class="c1">%%·efficiency_guide.erl:206:·Warning:·OPTIMIZED:·reference·used·to·mark·a·message·queue·position</span><span·class="w"> | 249 | </span><span·class="c1">%%·efficiency_guide.erl:206:·Warning:·OPTIMIZED:·reference·used·to·mark·a·message·queue·position</span><span·class="w"> |
| 250 | ····</span><span·class="n">MRef</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">monitor</span><span·class="p"·data-group-id="8 | 250 | ····</span><span·class="n">MRef</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">monitor</span><span·class="p"·data-group-id="2876576457-7">(</span><span·class="ss">process</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Process</span><span·class="p"·data-group-id="2876576457-7">)</span><span·class="p">,</span><span·class="w"> |
| 251 | ····</span><span·class="n">Process</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="8 | 251 | ····</span><span·class="n">Process</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="2876576457-8">{</span><span·class="nf">self</span><span·class="p"·data-group-id="2876576457-9">(</span><span·class="p"·data-group-id="2876576457-9">)</span><span·class="p">,</span><span·class="w">·</span><span·class="n">MRef</span><span·class="p">,</span><[·...·truncated·by·diffoscope;·len:·94,·SHA:·432988c367aba3532e661f510c6315bf4ac4035fea43ea4971e0de7becda663a·...·]-8">}</span><span·class="p">,</span><span·class="w"> |
| 252 | ····</span><span·class="c1">%%·efficiency_guide.erl:208:·Warning:·OPTIMIZED:·matches·reference·created·by·monitor/2·at·efficiency_guide.erl:206</span><span·class="w"> | 252 | ····</span><span·class="c1">%%·efficiency_guide.erl:208:·Warning:·OPTIMIZED:·matches·reference·created·by·monitor/2·at·efficiency_guide.erl:206</span><span·class="w"> |
| 253 | ····</span><span·class="k">receive</span><span·class="w"> | 253 | ····</span><span·class="k">receive</span><span·class="w"> |
| 254 | ········</span><span·class="p"·data-group-id="8 | 254 | ········</span><span·class="p"·data-group-id="2876576457-10">{</span><span·class="n">MRef</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reply</span><span·class="p"·data-group-id="2876576457-10">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 255 | ········</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">demonitor</span><span·class="p"·data-group-id="8 | 255 | ········</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">demonitor</span><span·class="p"·data-group-id="2876576457-11">(</span><span·class="n">MRef</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2876576457-12">[</span><span·class="ss">flush</span><span·class="p"·data-group-id="2876576457-12">]</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·20,·SHA:·c568ada662e390a6158c8dc9fe799e0a93151436122139bacc471cbb62378b87·...·]-11">)</span><span·class="p">,</span><span·class="w"> |
| 256 | ········</span><span·class="nf">handle_reply</span><span·class="p"·data-group-id="8 | 256 | ········</span><span·class="nf">handle_reply</span><span·class="p"·data-group-id="2876576457-13">(</span><span·class="n">Reply</span><span·class="p"·data-group-id="2876576457-13">)</span><span·class="p">;</span><span·class="w"> |
| 257 | ····</span><span·class="p"·data-group-id="8 | 257 | ····</span><span·class="p"·data-group-id="2876576457-14">{</span><span·class="ss">'DOWN'</span><span·class="p">,</span><span·class="w">·</span><span·class="n">MRef</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span>[·...·truncated·by·diffoscope;·len:·142,·SHA:·40811557eb195119d3513436b7d5992339d6bcd15eb339e3c72ccf49ed16a1a1·...·]-14">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 258 | ····</span><span·class="nf">handle_error</span><span·class="p"·data-group-id="8 | 258 | ····</span><span·class="nf">handle_error</span><span·class="p"·data-group-id="2876576457-15">(</span><span·class="n">Reason</span><span·class="p"·data-group-id="2876576457-15">)</span><span·class="w"> |
| 259 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 259 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 260 | </span><span·class="c1">%%·DO</span><span·class="w"> | 260 | </span><span·class="c1">%%·DO</span><span·class="w"> |
| 261 | </span><span·class="nf">cross_function_receive</span><span·class="p"·data-group-id="8 | 261 | </span><span·class="nf">cross_function_receive</span><span·class="p"·data-group-id="2876576457-16">(</span><span·class="p"·data-group-id="2876576457-16">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 262 | ····</span><span·class="c1">%%·efficiency_guide.erl:218:·Warning:·OPTIMIZED:·reference·used·to·mark·a·message·queue·position</span><span·class="w"> | 262 | ····</span><span·class="c1">%%·efficiency_guide.erl:218:·Warning:·OPTIMIZED:·reference·used·to·mark·a·message·queue·position</span><span·class="w"> |
| 263 | ····</span><span·class="n">Ref</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">make_ref</span><span·class="p"·data-group-id="8 | 263 | ····</span><span·class="n">Ref</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">make_ref</span><span·class="p"·data-group-id="2876576457-17">(</span><span·class="p"·data-group-id="2876576457-17">)</span><span·class="p">,</span><span·class="w"> |
| 264 | ····</span><span·class="c1">%%·efficiency_guide.erl:219:·Warning:·INFO:·passing·reference·created·by·make_ref/0·at·efficiency_guide.erl:218</span><span·class="w"> | 264 | ····</span><span·class="c1">%%·efficiency_guide.erl:219:·Warning:·INFO:·passing·reference·created·by·make_ref/0·at·efficiency_guide.erl:218</span><span·class="w"> |
| 265 | ····</span><span·class="nf">cross_function_receive</span><span·class="p"·data-group-id="8 | 265 | ····</span><span·class="nf">cross_function_receive</span><span·class="p"·data-group-id="2876576457-18">(</span><span·class="n">Ref</span><span·class="p"·data-group-id="2876576457-18">)</span><span·class="p">.</span><span·class="w"> |
| 266 | </span><span·class="nf">cross_function_receive</span><span·class="p"·data-group-id="8 | 266 | </span><span·class="nf">cross_function_receive</span><span·class="p"·data-group-id="2876576457-19">(</span><span·class="n">Ref</span><span·class="p"·data-group-id="2876576457-19">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 267 | ····</span><span·class="c1">%%·efficiency_guide.erl:222:·Warning:·OPTIMIZED:·all·clauses·match·reference·in·function·parameter·1</span><span·class="w"> | 267 | ····</span><span·class="c1">%%·efficiency_guide.erl:222:·Warning:·OPTIMIZED:·all·clauses·match·reference·in·function·parameter·1</span><span·class="w"> |
| 268 | ····</span><span·class="k">receive</span><span·class="w"> | 268 | ····</span><span·class="k">receive</span><span·class="w"> |
| 269 | ········</span><span·class="p"·data-group-id="8 | 269 | ········</span><span·class="p"·data-group-id="2876576457-20">{</span><span·class="n">Ref</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Message</span><span·class="p"·data-group-id="2876576457-20">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span[·...·truncated·by·diffoscope;·len:·160,·SHA:·0fca2721516d4ace03ab05a2650c53388419abe9e791b29d8f36f0a8c507d6b5·...·]-21">)</span><span·class="w"> |
| 270 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><h2·id="literal-pool"·class="section-heading"> | 270 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><h2·id="literal-pool"·class="section-heading"> |
| 271 | ··<a·href="#literal-pool"·class="hover-link"> | 271 | ··<a·href="#literal-pool"·class="hover-link"> |
| 272 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 272 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 273 | ··</a> | 273 | ··</a> |
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| 120 | to·read·the·port·example·in·<a·href="c_port.html">Ports</a>·before·reading·this·section.</p><h2·id="erlang-program"·class="section-heading"> | 120 | to·read·the·port·example·in·<a·href="c_port.html">Ports</a>·before·reading·this·section.</p><h2·id="erlang-program"·class="section-heading"> |
| 121 | ··<a·href="#erlang-program"·class="hover-link"> | 121 | ··<a·href="#erlang-program"·class="hover-link"> |
| 122 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 122 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 123 | ··</a> | 123 | ··</a> |
| 124 | ··<span·class="text">Erlang·Program</span> | 124 | ··<span·class="text">Erlang·Program</span> |
| 125 | </h2> | 125 | </h2> |
| 126 | <p>The·following·example·shows·an·Erlang·program·communicating·with·a·C·program | 126 | <p>The·following·example·shows·an·Erlang·program·communicating·with·a·C·program |
| 127 | over·a·plain·port·with·home·made·encoding:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="6 | 127 | over·a·plain·port·with·home·made·encoding:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="6846002328-1">(</span><span·class="ss">complex1</span><span·class="p"·data-group-id="6846002328-1">)</span><span·class="p">.</span><span·class="w"> |
| 128 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="6 | 128 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="6846002328-2">(</span><span·class="p"·data-group-id="6846002328-3">[</span><span·class="ss">start</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">stop</span><span·class="p">/</span><spa[·...·truncated·by·diffoscope;·len:·240,·SHA:·447f80a6c5e6dcc16a06f954a9ebb4900c390992f386279cebf18eeff73b5318·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 129 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="6 | 129 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="6846002328-4">(</span><span·class="p"·data-group-id="6846002328-5">[</span><span·class="ss">foo</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">bar</span><span·class="p">/</span><span·c[·...·truncated·by·diffoscope;·len:·112,·SHA:·0e498fa898fa7ad72b71004dc05239e15f91ab67cee12f9bb45321ae90a5a211·...·]-4">)</span><span·class="p">.</span><span·class="w"> |
| 130 | </span><span·class="nf">start</span><span·class="p"·data-group-id="6 | 130 | </span><span·class="nf">start</span><span·class="p"·data-group-id="6846002328-6">(</span><span·class="n">ExtPrg</span><span·class="p"·data-group-id="6846002328-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 131 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id="6 | 131 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id="6846002328-7">(</span><span·class="o">?</span><span·class="n">MODULE</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">init</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6846002328-8">[</span><span[·...·truncated·by·diffoscope;·len:·118,·SHA:·cef2f32329496465ff8491c4637c56890cef9c3cd36385d638d5a06d4f9adf0b·...·]-7">)</span><span·class="p">.</span><span·class="w"> |
| 132 | </span><span·class="nf">stop</span><span·class="p"·data-group-id="6 | 132 | </span><span·class="nf">stop</span><span·class="p"·data-group-id="6846002328-9">(</span><span·class="p"·data-group-id="6846002328-9">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 133 | ····</span><span·class="ss">complex</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="ss">stop</span><span·class="p">.</span><span·class="w"> | 133 | ····</span><span·class="ss">complex</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="ss">stop</span><span·class="p">.</span><span·class="w"> |
| 134 | </span><span·class="nf">foo</span><span·class="p"·data-group-id="6 | 134 | </span><span·class="nf">foo</span><span·class="p"·data-group-id="6846002328-10">(</span><span·class="n">X</span><span·class="p"·data-group-id="6846002328-10">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 135 | ····</span><span·class="nf">call_port</span><span·class="p"·data-group-id="6 | 135 | ····</span><span·class="nf">call_port</span><span·class="p"·data-group-id="6846002328-11">(</span><span·class="p"·data-group-id="6846002328-12">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="n">X</span><span·class="p"·data-group-id="6846002328-12">}</span><span·class="p"·data-group-[·...·truncated·by·diffoscope;·len:·14,·SHA:·efd916d87bef2da83adde9ba3163c2ce73d4444060c6aa47ab47aeee376136aa·...·]-11">)</span><span·class="p">.</span><span·class="w"> |
| 136 | </span><span·class="nf">bar</span><span·class="p"·data-group-id="6 | 136 | </span><span·class="nf">bar</span><span·class="p"·data-group-id="6846002328-13">(</span><span·class="n">Y</span><span·class="p"·data-group-id="6846002328-13">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 137 | ····</span><span·class="nf">call_port</span><span·class="p"·data-group-id="6 | 137 | ····</span><span·class="nf">call_port</span><span·class="p"·data-group-id="6846002328-14">(</span><span·class="p"·data-group-id="6846002328-15">{</span><span·class="ss">bar</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Y</span><span·class="p"·data-group-id="6846002328-15">}</span><span·class="p"·data-group-[·...·truncated·by·diffoscope;·len:·14,·SHA:·efd916d87bef2da83adde9ba3163c2ce73d4444060c6aa47ab47aeee376136aa·...·]-14">)</span><span·class="p">.</span><span·class="w"> |
| 138 | </span><span·class="nf">call_port</span><span·class="p"·data-group-id="6 | 138 | </span><span·class="nf">call_port</span><span·class="p"·data-group-id="6846002328-16">(</span><span·class="n">Msg</span><span·class="p"·data-group-id="6846002328-16">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 139 | ····</span><span·class="ss">complex</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="6 | 139 | ····</span><span·class="ss">complex</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="6846002328-17">{</span><span·class="ss">call</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="6846002328-18">(</span><span·class="p"·data-group-id="6846002328-18">)</span><span·class="p">,</spa[·...·truncated·by·diffoscope;·len:·93,·SHA:·fc446d178027fec4793231b0408274b1f5e1ec4ed58f88bc968401b341798235·...·]-17">}</span><span·class="p">,</span><span·class="w"> |
| 140 | ····</span><span·class="k">receive</span><span·class="w"> | 140 | ····</span><span·class="k">receive</span><span·class="w"> |
| 141 | » </span><span·class="p"·data-group-id="6 | 141 | » </span><span·class="p"·data-group-id="6846002328-19">{</span><span·class="ss">complex</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Result</span><span·class="p"·data-group-id="6846002328-19">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 142 | » ····</span><span·class="n">Result</span><span·class="w"> | 142 | » ····</span><span·class="n">Result</span><span·class="w"> |
| 143 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 143 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 144 | </span><span·class="nf">init</span><span·class="p"·data-group-id="6 | 144 | </span><span·class="nf">init</span><span·class="p"·data-group-id="6846002328-20">(</span><span·class="n">ExtPrg</span><span·class="p"·data-group-id="6846002328-20">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 145 | ····</span><span·class="nf">register</span><span·class="p"·data-group-id="6 | 145 | ····</span><span·class="nf">register</span><span·class="p"·data-group-id="6846002328-21">(</span><span·class="ss">complex</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="6846002328-22">(</span><span·class="p"·data-group-id="6846002328-22">)</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·22,·SHA:·c220759fba1e77f285a79a03a6522fa6b350caa07b9d7abc24011c8b1ef2bec5·...·]-21">)</span><span·class="p">,</span><span·class="w"> |
| 146 | ····</span><span·class="nf">process_flag</span><span·class="p"·data-group-id="6 | 146 | ····</span><span·class="nf">process_flag</span><span·class="p"·data-group-id="6846002328-23">(</span><span·class="ss">trap_exit</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">true</span><span·class="p"·data-group-id="6846002328-23">)</span><span·class="p">,</span><span·class="w"> |
| 147 | ····</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">open_port</span><span·class="p"·data-group-id="6 | 147 | ····</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">open_port</span><span·class="p"·data-group-id="6846002328-24">(</span><span·class="p"·data-group-id="6846002328-25">{</span><span·class="nb">spawn</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ExtPrg</span><span·class="p"·data-group-id="6846002328-25">}</span><span·class="p">,</s[·...·truncated·by·diffoscope;·len:·388,·SHA:·48297af2de7edaa09b05b52f54ba1237e217cce5b7292f5b9a473859aa4e75c7·...·]-24">)</span><span·class="p">,</span><span·class="w"> |
| 148 | ····</span><span·class="nf">loop</span><span·class="p"·data-group-id="6 | 148 | ····</span><span·class="nf">loop</span><span·class="p"·data-group-id="6846002328-28">(</span><span·class="n">Port</span><span·class="p"·data-group-id="6846002328-28">)</span><span·class="p">.</span><span·class="w"> |
| 149 | </span><span·class="nf">loop</span><span·class="p"·data-group-id="6 | 149 | </span><span·class="nf">loop</span><span·class="p"·data-group-id="6846002328-29">(</span><span·class="n">Port</span><span·class="p"·data-group-id="6846002328-29">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 150 | ····</span><span·class="k">receive</span><span·class="w"> | 150 | ····</span><span·class="k">receive</span><span·class="w"> |
| 151 | » </span><span·class="p"·data-group-id="6 | 151 | » </span><span·class="p"·data-group-id="6846002328-30">{</span><span·class="ss">call</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Caller</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p"·data-group-id="6846002328-30">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 152 | » ····</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="6 | 152 | » ····</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="6846002328-31">{</span><span·class="nf">self</span><span·class="p"·data-group-id="6846002328-32">(</span><span·class="p"·data-group-id="6846002328-32">)</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6846002328-33">{</s[·...·truncated·by·diffoscope;·len:·342,·SHA:·01aadcbd8329bd130ffb7b4e189b6c4fb47cf9894de1a71ffdb899bc97a9489b·...·]-31">}</span><span·class="p">,</span><span·class="w"> |
| 153 | » ····</span><span·class="k">receive</span><span·class="w"> | 153 | » ····</span><span·class="k">receive</span><span·class="w"> |
| 154 | » » </span><span·class="p"·data-group-id="6 | 154 | » » </span><span·class="p"·data-group-id="6846002328-35">{</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6846002328-36">{</span><span·class="ss">data</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><s[·...·truncated·by·diffoscope;·len:·93,·SHA:·c73d2ce83a9b801a36f98965da851adc04faddf8ed61c3a12a05e0f2700b2598·...·]-35">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 155 | » » ····</span><span·class="n">Caller</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="6 | 155 | » » ····</span><span·class="n">Caller</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="6846002328-37">{</span><span·class="ss">complex</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">decode</span><span·class="p"·data-group-id="6846002328-38">(</span><span·class="n">Data</span><span·class="p"·data-group-id="6846002328-38[·...·truncated·by·diffoscope;·len:·51,·SHA:·736f4a2748e9b685d4c9dce1eed1d5fb3908c6b060218d13dc29b0e7ef2c5302·...·]-37">}</span><span·class="w"> |
| 156 | » ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 156 | » ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 157 | » ····</span><span·class="nf">loop</span><span·class="p"·data-group-id="6 | 157 | » ····</span><span·class="nf">loop</span><span·class="p"·data-group-id="6846002328-39">(</span><span·class="n">Port</span><span·class="p"·data-group-id="6846002328-39">)</span><span·class="p">;</span><span·class="w"> |
| 158 | » </span><span·class="ss">stop</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 158 | » </span><span·class="ss">stop</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 159 | » ····</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="6 | 159 | » ····</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="6846002328-40">{</span><span·class="nf">self</span><span·class="p"·data-group-id="6846002328-41">(</span><span·class="p"·data-group-id="6846002328-41">)</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">close</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·20,·SHA:·3119100ba0411fea216575994ccdf50a904d4f9c972808de9f16d9203129c4d0·...·]-40">}</span><span·class="p">,</span><span·class="w"> |
| 160 | » ····</span><span·class="k">receive</span><span·class="w"> | 160 | » ····</span><span·class="k">receive</span><span·class="w"> |
| 161 | » » </span><span·class="p"·data-group-id="6 | 161 | » » </span><span·class="p"·data-group-id="6846002328-42">{</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">closed</span><span·class="p"·data-group-id="6846002328-42">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 162 | » » ····</span><span·class="nf">exit</span><span·class="p"·data-group-id="6 | 162 | » » ····</span><span·class="nf">exit</span><span·class="p"·data-group-id="6846002328-43">(</span><span·class="ss">normal</span><span·class="p"·data-group-id="6846002328-43">)</span><span·class="w"> |
| 163 | » ····</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> | 163 | » ····</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> |
| 164 | » </span><span·class="p"·data-group-id="6 | 164 | » </span><span·class="p"·data-group-id="6846002328-44">{</span><span·class="ss">'EXIT'</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="p"·data-group-id="6846002328-44">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 165 | » ····</span><span·class="nf">exit</span><span·class="p"·data-group-id="6 | 165 | » ····</span><span·class="nf">exit</span><span·class="p"·data-group-id="6846002328-45">(</span><span·class="ss">port_terminated</span><span·class="p"·data-group-id="6846002328-45">)</span><span·class="w"> |
| 166 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 166 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 167 | </span><span·class="nf">encode</span><span·class="p"·data-group-id="6 | 167 | </span><span·class="nf">encode</span><span·class="p"·data-group-id="6846002328-46">(</span><span·class="p"·data-group-id="6846002328-47">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="n">X</span><span·class="p"·data-group-id="6846002328-47">}</span><span·class="p"·data-group-[·...·truncated·by·diffoscope;·len:·295,·SHA:·67c0946c10fb1a45866b39a1591d2de19ae1bfc95d985755f73ab4efc191d571·...·]-48">]</span><span·class="p">;</span><span·class="w"> |
| 168 | </span><span·class="nf">encode</span><span·class="p"·data-group-id="6 | 168 | </span><span·class="nf">encode</span><span·class="p"·data-group-id="6846002328-49">(</span><span·class="p"·data-group-id="6846002328-50">{</span><span·class="ss">bar</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Y</span><span·class="p"·data-group-id="6846002328-50">}</span><span·class="p"·data-group-[·...·truncated·by·diffoscope;·len:·295,·SHA:·84bb1f25391fc5125e001c5160f113763d288f00c0d98f6b0cfae783470608c4·...·]-51">]</span><span·class="p">.</span><span·class="w"> |
| 169 | </span><span·class="nf">decode</span><span·class="p"·data-group-id="6 | 169 | </span><span·class="nf">decode</span><span·class="p"·data-group-id="6846002328-52">(</span><span·class="p"·data-group-id="6846002328-53">[</span><span·class="n">Int</span><span·class="p"·data-group-id="6846002328-53">]</span><span·class="p"·data-group-id="6846002328-52">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Int</span><span·class="p">.</span></code></pre><p>There·are·two·differences·when·using·Erl_Interface·on·the·C·side·compared·to·the |
| 170 | example·in·<a·href="c_port.html">Ports</a>,·using·only·the·plain·port:</p><ul><li>As·Erl_Interface·operates·on·the·Erlang·external·term·format,·the·port·must·be | 170 | example·in·<a·href="c_port.html">Ports</a>,·using·only·the·plain·port:</p><ul><li>As·Erl_Interface·operates·on·the·Erlang·external·term·format,·the·port·must·be |
| 171 | set·to·use·binaries.</li><li>Instead·of·inventing·an·encoding/decoding·scheme,·the | 171 | set·to·use·binaries.</li><li>Instead·of·inventing·an·encoding/decoding·scheme,·the |
| 172 | <a·href="../../erts-15.2.3/doc/html/erlang.html#term_to_binary/1"><code·class="inline">term_to_binary/1</code></a>·and | 172 | <a·href="../../erts-15.2.3/doc/html/erlang.html#term_to_binary/1"><code·class="inline">term_to_binary/1</code></a>·and |
| 173 | <a·href="../../erts-15.2.3/doc/html/erlang.html#binary_to_term/1"><code·class="inline">binary_to_term/1</code></a>·BIFs·are·to·be·used.</li></ul><p>That·is:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">open_port</span><span·class="p"·data-group-id=" | 173 | <a·href="../../erts-15.2.3/doc/html/erlang.html#binary_to_term/1"><code·class="inline">binary_to_term/1</code></a>·BIFs·are·to·be·used.</li></ul><p>That·is:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">open_port</span><span·class="p"·data-group-id="2345822919-1">(</span><span·class="p"·data-group-id="2345822919-2">{</span><span·class="nb">spawn</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ExtPrg</span><span·class="p"·data-group-id="2345822919-2">}</span><span·class="p">,</spa[·...·truncated·by·diffoscope;·len:·2065,·SHA:·c26773696bdd8ee69d97666b4095c1730dc7a6f98f602317b05206ee1449f7ed·...·]-1">}</span><span·class="p">,</span><span·class="w"> |
| 174 | </span><span·class="k">receive</span><span·class="w"> | 174 | </span><span·class="k">receive</span><span·class="w"> |
| 175 | ··</span><span·class="p"·data-group-id=" | 175 | ··</span><span·class="p"·data-group-id="9229775625-5">{</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9229775625-6">{</span><span·class="ss">data</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><sp[·...·truncated·by·diffoscope;·len:·91,·SHA:·3b389a182b96e8d877ffceed3c7f4de511302f0f539f584c46d50932b7cc4452·...·]-5">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 176 | ····</span><span·class="n">Caller</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 176 | ····</span><span·class="n">Caller</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="9229775625-7">{</span><span·class="ss">complex</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">decode</span><span·class="p"·data-group-id="9229775625-8">(</span><span·class="n">Data</span><span·class="p"·data-group-id="9229775625-8">[·...·truncated·by·diffoscope;·len:·49,·SHA:·473b51ea292018bd42a7537c7565c45d9d628844b713b6505de8c2a753dce2d5·...·]-7">}</span><span·class="w"> |
| 177 | </span><span·class="k">end</span></code></pre><p>is·replaced·with:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Port</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 177 | </span><span·class="k">end</span></code></pre><p>is·replaced·with:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Port</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="4545864044-1">{</span><span·class="nf">self</span><span·class="p"·data-group-id="4545864044-2">(</span><span·class="p"·data-group-id="4545864044-2">)</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4545864044-3">{</span[·...·truncated·by·diffoscope;·len:·344,·SHA:·ad4e663bb9e5bfd78d6ae0e2e8c7c5121b60371df28a530519f9e70bdf7d6e65·...·]-1">}</span><span·class="p">,</span><span·class="w"> |
| 178 | </span><span·class="k">receive</span><span·class="w"> | 178 | </span><span·class="k">receive</span><span·class="w"> |
| 179 | ··</span><span·class="p"·data-group-id=" | 179 | ··</span><span·class="p"·data-group-id="4545864044-5">{</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4545864044-6">{</span><span·class="ss">data</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><sp[·...·truncated·by·diffoscope;·len:·91,·SHA:·80a45038ab1946df20e888a260445b59677055aae503a9ffac07c6b6c7003db8·...·]-5">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 180 | ····</span><span·class="n">Caller</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 180 | ····</span><span·class="n">Caller</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="4545864044-7">{</span><span·class="ss">complex</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">binary_to_term</span><span·class="p"·data-group-id="4545864044-8">(</span><span·class="n">Data</span><span·class="p"·data-group-id="454586[·...·truncated·by·diffoscope;·len:·57,·SHA:·b9621a47e38fbffc8ad5252a04be0883b3511b517204331ac3c19964aa704292·...·]-7">}</span><span·class="w"> |
| 181 | </span><span·class="k">end</span></code></pre><p>The·resulting·Erlang·program·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 181 | </span><span·class="k">end</span></code></pre><p>The·resulting·Erlang·program·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="6595532551-1">(</span><span·class="ss">complex2</span><span·class="p"·data-group-id="6595532551-1">)</span><span·class="p">.</span><span·class="w"> |
| 182 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 182 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="6595532551-2">(</span><span·class="p"·data-group-id="6595532551-3">[</span><span·class="ss">start</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">stop</span><span·class="p">/</span><sp[·...·truncated·by·diffoscope;·len:·241,·SHA:·4bc687168fe721de7a5adaa05c1335a093a643f17625b4d3d2b4fa6960859dd4·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 183 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 183 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="6595532551-4">(</span><span·class="p"·data-group-id="6595532551-5">[</span><span·class="ss">foo</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">bar</span><span·class="p">/</span><span·[·...·truncated·by·diffoscope;·len:·113,·SHA:·7fbd89dc71be6d0495c532706fe529d0247981a6fed541992870bab18bc719a8·...·]-4">)</span><span·class="p">.</span><span·class="w"> |
| 184 | </span><span·class="nf">start</span><span·class="p"·data-group-id=" | 184 | </span><span·class="nf">start</span><span·class="p"·data-group-id="6595532551-6">(</span><span·class="n">ExtPrg</span><span·class="p"·data-group-id="6595532551-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 185 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id=" | 185 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id="6595532551-7">(</span><span·class="o">?</span><span·class="n">MODULE</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">init</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6595532551-8">[</span><spa[·...·truncated·by·diffoscope;·len:·119,·SHA:·10ea348fa157aa48984284ec1b317abffb53dd2ca973d2ff2064f93cd1797865·...·]-7">)</span><span·class="p">.</span><span·class="w"> |
| 186 | </span><span·class="nf">stop</span><span·class="p"·data-group-id=" | 186 | </span><span·class="nf">stop</span><span·class="p"·data-group-id="6595532551-9">(</span><span·class="p"·data-group-id="6595532551-9">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 187 | ····</span><span·class="ss">complex</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="ss">stop</span><span·class="p">.</span><span·class="w"> | 187 | ····</span><span·class="ss">complex</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="ss">stop</span><span·class="p">.</span><span·class="w"> |
| 188 | </span><span·class="nf">foo</span><span·class="p"·data-group-id=" | 188 | </span><span·class="nf">foo</span><span·class="p"·data-group-id="6595532551-10">(</span><span·class="n">X</span><span·class="p"·data-group-id="6595532551-10">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 189 | ····</span><span·class="nf">call_port</span><span·class="p"·data-group-id=" | 189 | ····</span><span·class="nf">call_port</span><span·class="p"·data-group-id="6595532551-11">(</span><span·class="p"·data-group-id="6595532551-12">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="n">X</span><span·class="p"·data-group-id="6595532551-12">}</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·15,·SHA:·e177606d927296b00847b4c547ffddcc8f183a0f645ad27e3df53633a8d139a3·...·]-11">)</span><span·class="p">.</span><span·class="w"> |
| 190 | </span><span·class="nf">bar</span><span·class="p"·data-group-id=" | 190 | </span><span·class="nf">bar</span><span·class="p"·data-group-id="6595532551-13">(</span><span·class="n">Y</span><span·class="p"·data-group-id="6595532551-13">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 191 | ····</span><span·class="nf">call_port</span><span·class="p"·data-group-id=" | 191 | ····</span><span·class="nf">call_port</span><span·class="p"·data-group-id="6595532551-14">(</span><span·class="p"·data-group-id="6595532551-15">{</span><span·class="ss">bar</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Y</span><span·class="p"·data-group-id="6595532551-15">}</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·15,·SHA:·e177606d927296b00847b4c547ffddcc8f183a0f645ad27e3df53633a8d139a3·...·]-14">)</span><span·class="p">.</span><span·class="w"> |
| 192 | </span><span·class="nf">call_port</span><span·class="p"·data-group-id=" | 192 | </span><span·class="nf">call_port</span><span·class="p"·data-group-id="6595532551-16">(</span><span·class="n">Msg</span><span·class="p"·data-group-id="6595532551-16">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 193 | ····</span><span·class="ss">complex</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 193 | ····</span><span·class="ss">complex</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="6595532551-17">{</span><span·class="ss">call</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="6595532551-18">(</span><span·class="p"·data-group-id="6595532551-18">)</span><span·class="p">,</sp[·...·truncated·by·diffoscope;·len:·94,·SHA:·2e0e1582087c9f1502bac2b27e652ed2a8479e150139baf1dbfea8069221dde9·...·]-17">}</span><span·class="p">,</span><span·class="w"> |
| 194 | ····</span><span·class="k">receive</span><span·class="w"> | 194 | ····</span><span·class="k">receive</span><span·class="w"> |
| 195 | » </span><span·class="p"·data-group-id=" | 195 | » </span><span·class="p"·data-group-id="6595532551-19">{</span><span·class="ss">complex</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Result</span><span·class="p"·data-group-id="6595532551-19">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 196 | » ····</span><span·class="n">Result</span><span·class="w"> | 196 | » ····</span><span·class="n">Result</span><span·class="w"> |
| 197 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 197 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 198 | </span><span·class="nf">init</span><span·class="p"·data-group-id=" | 198 | </span><span·class="nf">init</span><span·class="p"·data-group-id="6595532551-20">(</span><span·class="n">ExtPrg</span><span·class="p"·data-group-id="6595532551-20">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 199 | ····</span><span·class="nf">register</span><span·class="p"·data-group-id=" | 199 | ····</span><span·class="nf">register</span><span·class="p"·data-group-id="6595532551-21">(</span><span·class="ss">complex</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="6595532551-22">(</span><span·class="p"·data-group-id="6595532551-22">)</span><span·class="p"·da[·...·truncated·by·diffoscope;·len:·23,·SHA:·573ad8a02062a93a720314163dce327ed5df86282e6ab3679b2292ad364e6da5·...·]-21">)</span><span·class="p">,</span><span·class="w"> |
| 200 | ····</span><span·class="nf">process_flag</span><span·class="p"·data-group-id=" | 200 | ····</span><span·class="nf">process_flag</span><span·class="p"·data-group-id="6595532551-23">(</span><span·class="ss">trap_exit</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">true</span><span·class="p"·data-group-id="6595532551-23">)</span><span·class="p">,</span><span·class="w"> |
| 201 | ····</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">open_port</span><span·class="p"·data-group-id=" | 201 | ····</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">open_port</span><span·class="p"·data-group-id="6595532551-24">(</span><span·class="p"·data-group-id="6595532551-25">{</span><span·class="nb">spawn</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ExtPrg</span><span·class="p"·data-group-id="6595532551-25">}</span><span·class="p">,</[·...·truncated·by·diffoscope;·len:·467,·SHA:·c160cf010daccb503693dcddc8ad42bf6e6d1d7645c42a74e6f70640de6d8b57·...·]-24">)</span><span·class="p">,</span><span·class="w"> |
| 202 | ····</span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 202 | ····</span><span·class="nf">loop</span><span·class="p"·data-group-id="6595532551-28">(</span><span·class="n">Port</span><span·class="p"·data-group-id="6595532551-28">)</span><span·class="p">.</span><span·class="w"> |
| 203 | </span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 203 | </span><span·class="nf">loop</span><span·class="p"·data-group-id="6595532551-29">(</span><span·class="n">Port</span><span·class="p"·data-group-id="6595532551-29">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 204 | ····</span><span·class="k">receive</span><span·class="w"> | 204 | ····</span><span·class="k">receive</span><span·class="w"> |
| 205 | » </span><span·class="p"·data-group-id=" | 205 | » </span><span·class="p"·data-group-id="6595532551-30">{</span><span·class="ss">call</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Caller</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p"·data-group-id="6595532551-30">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 206 | » ····</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 206 | » ····</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="6595532551-31">{</span><span·class="nf">self</span><span·class="p"·data-group-id="6595532551-32">(</span><span·class="p"·data-group-id="6595532551-32">)</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6595532551-33">{</[·...·truncated·by·diffoscope;·len:·351,·SHA:·e14a533d325a4faaecf23814c9b5c9f5bf50aceb358fae1c5f4ee751d243e4e8·...·]-31">}</span><span·class="p">,</span><span·class="w"> |
| 207 | » ····</span><span·class="k">receive</span><span·class="w"> | 207 | » ····</span><span·class="k">receive</span><span·class="w"> |
| 208 | » » </span><span·class="p"·data-group-id=" | 208 | » » </span><span·class="p"·data-group-id="6595532551-35">{</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6595532551-36">{</span><span·class="ss">data</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><[·...·truncated·by·diffoscope;·len:·94,·SHA:·6447a89b648226c5db16949bbf3e3170750405e884d0aafea9eba4800ffba083·...·]-35">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 209 | » » ····</span><span·class="n">Caller</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 209 | » » ····</span><span·class="n">Caller</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="6595532551-37">{</span><span·class="ss">complex</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">binary_to_term</span><span·class="p"·data-group-id="6595532551-38">(</span><span·class="n">Data</span><span·class="p"·data-group-id="6595[·...·truncated·by·diffoscope;·len:·60,·SHA:·2a0c765c2c395d866281698e8cadd2de05c166c88aeca9b1e545d6ba63874a45·...·]-37">}</span><span·class="w"> |
| 210 | » ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 210 | » ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 211 | » ····</span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 211 | » ····</span><span·class="nf">loop</span><span·class="p"·data-group-id="6595532551-39">(</span><span·class="n">Port</span><span·class="p"·data-group-id="6595532551-39">)</span><span·class="p">;</span><span·class="w"> |
| 212 | » </span><span·class="ss">stop</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 212 | » </span><span·class="ss">stop</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 213 | » ····</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 213 | » ····</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="6595532551-40">{</span><span·class="nf">self</span><span·class="p"·data-group-id="6595532551-41">(</span><span·class="p"·data-group-id="6595532551-41">)</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">close</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·21,·SHA:·cc08dc75dd109076179e2c2db0ea442061daa480b15336e9cbe9e86e6ef3feba·...·]-40">}</span><span·class="p">,</span><span·class="w"> |
| 214 | » ····</span><span·class="k">receive</span><span·class="w"> | 214 | » ····</span><span·class="k">receive</span><span·class="w"> |
| 215 | » » </span><span·class="p"·data-group-id=" | 215 | » » </span><span·class="p"·data-group-id="6595532551-42">{</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">closed</span><span·class="p"·data-group-id="6595532551-42">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 216 | » » ····</span><span·class="nf">exit</span><span·class="p"·data-group-id=" | 216 | » » ····</span><span·class="nf">exit</span><span·class="p"·data-group-id="6595532551-43">(</span><span·class="ss">normal</span><span·class="p"·data-group-id="6595532551-43">)</span><span·class="w"> |
| 217 | » ····</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> | 217 | » ····</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> |
| 218 | » </span><span·class="p"·data-group-id=" | 218 | » </span><span·class="p"·data-group-id="6595532551-44">{</span><span·class="ss">'EXIT'</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="p"·data-group-id="6595532551-44">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 219 | » ····</span><span·class="nf">exit</span><span·class="p"·data-group-id=" | 219 | » ····</span><span·class="nf">exit</span><span·class="p"·data-group-id="6595532551-45">(</span><span·class="ss">port_terminated</span><span·class="p"·data-group-id="6595532551-45">)</span><span·class="w"> |
| 220 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>Notice·that·calling·<code·class="inline">complex2:foo/1</code>·and·<code·class="inline">complex2:bar/1</code>·results·in·the·tuple | 220 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>Notice·that·calling·<code·class="inline">complex2:foo/1</code>·and·<code·class="inline">complex2:bar/1</code>·results·in·the·tuple |
| 221 | <code·class="inline">{foo,X}</code>·or·<code·class="inline">{bar,Y}</code>·being·sent·to·the·<code·class="inline">complex</code>·process,·which·codes·them·as | 221 | <code·class="inline">{foo,X}</code>·or·<code·class="inline">{bar,Y}</code>·being·sent·to·the·<code·class="inline">complex</code>·process,·which·codes·them·as |
| 222 | binaries·and·sends·them·to·the·port.·This·means·that·the·C·program·must·be·able | 222 | binaries·and·sends·them·to·the·port.·This·means·that·the·C·program·must·be·able |
| 223 | to·handle·these·two·tuples.</p><h2·id="c-program"·class="section-heading"> | 223 | to·handle·these·two·tuples.</p><h2·id="c-program"·class="section-heading"> |
| 224 | ··<a·href="#c-program"·class="hover-link"> | 224 | ··<a·href="#c-program"·class="hover-link"> |
| 225 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 225 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 226 | ··</a> | 226 | ··</a> |
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| 362 | ····-L/usr/local/otp/lib/erl_interface-3.9.2/lib·\ | 362 | ····-L/usr/local/otp/lib/erl_interface-3.9.2/lib·\ |
| 363 | ····complex.c·erl_comm.c·ei.c·-lei·-lpthread</code></pre><p>In·Erlang/OTP·R5B·and·later·versions·of·OTP,·the·<code·class="inline">include</code>·and·<code·class="inline">lib</code>·directories | 363 | ····complex.c·erl_comm.c·ei.c·-lei·-lpthread</code></pre><p>In·Erlang/OTP·R5B·and·later·versions·of·OTP,·the·<code·class="inline">include</code>·and·<code·class="inline">lib</code>·directories |
| 364 | are·situated·under·<code·class="inline">$OTPROOT/lib/erl_interface-VSN</code>,·where·<code·class="inline">$OTPROOT</code>·is·the | 364 | are·situated·under·<code·class="inline">$OTPROOT/lib/erl_interface-VSN</code>,·where·<code·class="inline">$OTPROOT</code>·is·the |
| 365 | root·directory·of·the·OTP·installation·(<code·class="inline">/usr/local/otp</code>·in·the·recent·example) | 365 | root·directory·of·the·OTP·installation·(<code·class="inline">/usr/local/otp</code>·in·the·recent·example) |
| 366 | and·<code·class="inline">VSN</code>·is·the·version·of·the·Erl_interface·application·(3.2.1·in·the·recent | 366 | and·<code·class="inline">VSN</code>·is·the·version·of·the·Erl_interface·application·(3.2.1·in·the·recent |
| 367 | example).</p><p>In·R4B·and·earlier·versions·of·OTP,·<code·class="inline">include</code>·and·<code·class="inline">lib</code>·are·situated·under | 367 | example).</p><p>In·R4B·and·earlier·versions·of·OTP,·<code·class="inline">include</code>·and·<code·class="inline">lib</code>·are·situated·under |
| 368 | <code·class="inline">$OTPROOT/usr</code>.</p><p><em>Step·2.</em>·Start·Erlang·and·compile·the·Erlang·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="ss">erl</span><span·class="w"> | 368 | <code·class="inline">$OTPROOT/usr</code>.</p><p><em>Step·2.</em>·Start·Erlang·and·compile·the·Erlang·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="ss">erl</span><span·class="w"> |
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| 143 | reports·and·other·error·and·information·reports·are·by·default·logged·through | 143 | reports·and·other·error·and·information·reports·are·by·default·logged·through |
| 144 | the·log·handler·which·is·set·up·when·the·Kernel·application·is·started.</p><p>Prior·to·Erlang/OTP·21.0,·supervisor,·crash,·and·progress·reports·were·only | 144 | the·log·handler·which·is·set·up·when·the·Kernel·application·is·started.</p><p>Prior·to·Erlang/OTP·21.0,·supervisor,·crash,·and·progress·reports·were·only |
| 145 | logged·when·the·SASL·application·was·running.·This·behaviour·can,·for·backwards | 145 | logged·when·the·SASL·application·was·running.·This·behaviour·can,·for·backwards |
| 146 | compatibility,·be·enabled·by·setting·the·Kernel·configuration·parameter | 146 | compatibility,·be·enabled·by·setting·the·Kernel·configuration·parameter |
| 147 | <a·href="../../lib/kernel-10.2.3/doc/html/kernel_app.html#logger_sasl_compatible"><code·class="inline">logger_sasl_compatible</code></a>·to | 147 | <a·href="../../lib/kernel-10.2.3/doc/html/kernel_app.html#logger_sasl_compatible"><code·class="inline">logger_sasl_compatible</code></a>·to |
| 148 | <code·class="inline">true</code>.·For·more·information,·see | 148 | <code·class="inline">true</code>.·For·more·information,·see |
| 149 | <a·href="../../lib/sasl-4.2.2/doc/html/error_logging.html">SASL·Error·Logging</a>·in·the·SASL·User's·Guide.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl·-kernel·logger_level·info</span><span·class="w"> | 149 | <a·href="../../lib/sasl-4.2.2/doc/html/error_logging.html">SASL·Error·Logging</a>·in·the·SASL·User's·Guide.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl·-kernel·logger_level·info</span><span·class="w"> |
| 150 | </span><span·class="n">Erlang</span><span·class="o">/</span><span·class="n">OTP</span><span·class="w">·</span><span·class="mi">21</span><span·class="w">·</span><span·class="p"·data-group-id=" | 150 | </span><span·class="n">Erlang</span><span·class="o">/</span><span·class="n">OTP</span><span·class="w">·</span><span·class="mi">21</span><span·class="w">·</span><span·class="p"·data-group-id="8970946612-1">[</span><span·class="ss">erts</span><span·class="o">-</span><span·class="mf">10.0</span><span·class="p"·data-group-id="8970946612-1">]</span><span·class="w">·</span><span·class="p"·data-group-id="8970946612-2">[</span><span·class="ss">source<[·...·truncated·by·diffoscope;·len:·1312,·SHA:·bb482f155c593094e6c268ecececfdbfc59aeffc0c4233d5aee2b7e506f14483·...·]2-7">]</span><span·class="w"> |
| 151 | </span><span·class="o">=</span><span·class="n">PROGRESS</span><span·class="w">·</span><span·class="n">REPORT</span><span·class="o">==</span><span·class="o">==</span><span·class="w">·</span><span·class="mi">8</span><span·class="o">-</span><span·class="n">Jun</span><span·class="o">-</span><span·class="mi">2018</span><span·class="p">:</span><span·class="p">:</span><span·class="mi">16</span><span·class="p">:</span><span·class="mi">54</span><span·class="p">:</span><span·class="mf">19.916404</span><span·class="w">·</span><span·class="o">==</span><span·class="o">=</span><span·class="w"> | 151 | </span><span·class="o">=</span><span·class="n">PROGRESS</span><span·class="w">·</span><span·class="n">REPORT</span><span·class="o">==</span><span·class="o">==</span><span·class="w">·</span><span·class="mi">8</span><span·class="o">-</span><span·class="n">Jun</span><span·class="o">-</span><span·class="mi">2018</span><span·class="p">:</span><span·class="p">:</span><span·class="mi">16</span><span·class="p">:</span><span·class="mi">54</span><span·class="p">:</span><span·class="mf">19.916404</span><span·class="w">·</span><span·class="o">==</span><span·class="o">=</span><span·class="w"> |
| 152 | ····</span><span·class="nc">application</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">kernel</span><span·class="w"> | 152 | ····</span><span·class="nc">application</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">kernel</span><span·class="w"> |
| 153 | ····</span><span·class="nc">started_at</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">nonode@nohost</span><span·class="w"> | 153 | ····</span><span·class="nc">started_at</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">nonode@nohost</span><span·class="w"> |
| 154 | </span><span·class="o">=</span><span·class="n">PROGRESS</span><span·class="w">·</span><span·class="n">REPORT</span><span·class="o">==</span><span·class="o">==</span><span·class="w">·</span><span·class="mi">8</span><span·class="o">-</span><span·class="n">Jun</span><span·class="o">-</span><span·class="mi">2018</span><span·class="p">:</span><span·class="p">:</span><span·class="mi">16</span><span·class="p">:</span><span·class="mi">54</span><span·class="p">:</span><span·class="mf">19.922908</span><span·class="w">·</span><span·class="o">==</span><span·class="o">=</span><span·class="w"> | 154 | </span><span·class="o">=</span><span·class="n">PROGRESS</span><span·class="w">·</span><span·class="n">REPORT</span><span·class="o">==</span><span·class="o">==</span><span·class="w">·</span><span·class="mi">8</span><span·class="o">-</span><span·class="n">Jun</span><span·class="o">-</span><span·class="mi">2018</span><span·class="p">:</span><span·class="p">:</span><span·class="mi">16</span><span·class="p">:</span><span·class="mi">54</span><span·class="p">:</span><span·class="mf">19.922908</span><span·class="w">·</span><span·class="o">==</span><span·class="o">=</span><span·class="w"> |
| 155 | ····</span><span·class="nc">application</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">stdlib</span><span·class="w"> | 155 | ····</span><span·class="nc">application</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">stdlib</span><span·class="w"> |
| 156 | ····</span><span·class="nc">started_at</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">nonode@nohost</span><span·class="w"> | 156 | ····</span><span·class="nc">started_at</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">nonode@nohost</span><span·class="w"> |
| 157 | </span><span·class="o">=</span><span·class="n">PROGRESS</span><span·class="w">·</span><span·class="n">REPORT</span><span·class="o">==</span><span·class="o">==</span><span·class="w">·</span><span·class="mi">8</span><span·class="o">-</span><span·class="n">Jun</span><span·class="o">-</span><span·class="mi">2018</span><span·class="p">:</span><span·class="p">:</span><span·class="mi">16</span><span·class="p">:</span><span·class="mi">54</span><span·class="p">:</span><span·class="mf">19.925755</span><span·class="w">·</span><span·class="o">==</span><span·class="o">=</span><span·class="w"> | 157 | </span><span·class="o">=</span><span·class="n">PROGRESS</span><span·class="w">·</span><span·class="n">REPORT</span><span·class="o">==</span><span·class="o">==</span><span·class="w">·</span><span·class="mi">8</span><span·class="o">-</span><span·class="n">Jun</span><span·class="o">-</span><span·class="mi">2018</span><span·class="p">:</span><span·class="p">:</span><span·class="mi">16</span><span·class="p">:</span><span·class="mi">54</span><span·class="p">:</span><span·class="mf">19.925755</span><span·class="w">·</span><span·class="o">==</span><span·class="o">=</span><span·class="w"> |
| 158 | ····</span><span·class="nc">supervisor</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 158 | ····</span><span·class="nc">supervisor</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="8970946612-8">{</span><span·class="ss">local</span><span·class="p">,</span><span·class="ss">kernel_safe_sup</span><span·class="p"·data-group-id="8970946612-8">}</span><span·class="w"> |
| 159 | ····</span><span·class="nc">started</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 159 | ····</span><span·class="nc">started</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="8970946612-9">[</span><span·class="p"·data-group-id="8970946612-10">{</span><span·class="ss">pid</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.74</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></spa[·...·truncated·by·diffoscope;·len:·42,·SHA:·c893bc5d08f4af874f00c38511600a5cc66b7d0252df6de415752c5b56d7db64·...·]2-10">}</span><span·class="p">,</span><span·class="w"> |
| 160 | ··············</span><span·class="p"·data-group-id=" | 160 | ··············</span><span·class="p"·data-group-id="8970946612-11">{</span><span·class="ss">id</span><span·class="p">,</span><span·class="ss">disk_log_sup</span><span·class="p"·data-group-id="8970946612-11">}</span><span·class="p">,</span><span·class="w"> |
| 161 | ··············</span><span·class="p"·data-group-id=" | 161 | ··············</span><span·class="p"·data-group-id="8970946612-12">{</span><span·class="ss">mfargs</span><span·class="p">,</span><span·class="p"·data-group-id="8970946612-13">{</span><span·class="ss">disk_log_sup</span><span·class="p">,</span><span·class="ss">start_link</span><span·class="p">,</span><span·c[·...·truncated·by·diffoscope;·len:·195,·SHA:·ce24061063f3d78afb036497fac22fcf01afe63099664e1e0a0c3923da78f649·...·]2-12">}</span><span·class="p">,</span><span·class="w"> |
| 162 | ··············</span><span·class="p"·data-group-id=" | 162 | ··············</span><span·class="p"·data-group-id="8970946612-15">{</span><span·class="ss">restart_type</span><span·class="p">,</span><span·class="ss">permanent</span><span·class="p"·data-group-id="8970946612-15">}</span><span·class="p">,</span><span·class="w"> |
| 163 | ··············</span><span·class="p"·data-group-id=" | 163 | ··············</span><span·class="p"·data-group-id="8970946612-16">{</span><span·class="ss">shutdown</span><span·class="p">,</span><span·class="mi">1000</span><span·class="p"·data-group-id="8970946612-16">}</span><span·class="p">,</span><span·class="w"> |
| 164 | ··············</span><span·class="p"·data-group-id=" | 164 | ··············</span><span·class="p"·data-group-id="8970946612-17">{</span><span·class="ss">child_type</span><span·class="p">,</span><span·class="ss">supervisor</span><span·class="p"·data-group-id="8970946612-17">}</span><span·class="p"·data-group-id="8970946612-9">]</span><span·class="w"> |
| 165 | </span><span·class="o">=</span><span·class="n">PROGRESS</span><span·class="w">·</span><span·class="n">REPORT</span><span·class="o">==</span><span·class="o">==</span><span·class="w">·</span><span·class="mi">8</span><span·class="o">-</span><span·class="n">Jun</span><span·class="o">-</span><span·class="mi">2018</span><span·class="p">:</span><span·class="p">:</span><span·class="mi">16</span><span·class="p">:</span><span·class="mi">54</span><span·class="p">:</span><span·class="mf">19.926056</span><span·class="w">·</span><span·class="o">==</span><span·class="o">=</span><span·class="w"> | 165 | </span><span·class="o">=</span><span·class="n">PROGRESS</span><span·class="w">·</span><span·class="n">REPORT</span><span·class="o">==</span><span·class="o">==</span><span·class="w">·</span><span·class="mi">8</span><span·class="o">-</span><span·class="n">Jun</span><span·class="o">-</span><span·class="mi">2018</span><span·class="p">:</span><span·class="p">:</span><span·class="mi">16</span><span·class="p">:</span><span·class="mi">54</span><span·class="p">:</span><span·class="mf">19.926056</span><span·class="w">·</span><span·class="o">==</span><span·class="o">=</span><span·class="w"> |
| 166 | ····</span><span·class="nc">supervisor</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 166 | ····</span><span·class="nc">supervisor</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="8970946612-18">{</span><span·class="ss">local</span><span·class="p">,</span><span·class="ss">kernel_safe_sup</span><span·class="p"·data-group-id="8970946612-18">}</span><span·class="w"> |
| 167 | ····</span><span·class="nc">started</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 167 | ····</span><span·class="nc">started</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="8970946612-19">[</span><span·class="p"·data-group-id="8970946612-20">{</span><span·class="ss">pid</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.75</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></sp[·...·truncated·by·diffoscope;·len:·43,·SHA:·cd0cf3488302ecc1ed82593eb9c7485637df052501ebd549fd4d17bfd6d28794·...·]2-20">}</span><span·class="p">,</span><span·class="w"> |
| 168 | ··············</span><span·class="p"·data-group-id=" | 168 | ··············</span><span·class="p"·data-group-id="8970946612-21">{</span><span·class="ss">id</span><span·class="p">,</span><span·class="ss">disk_log_server</span><span·class="p"·data-group-id="8970946612-21">}</span><span·class="p">,</span><span·class="w"> |
| 169 | ··············</span><span·class="p"·data-group-id=" | 169 | ··············</span><span·class="p"·data-group-id="8970946612-22">{</span><span·class="ss">mfargs</span><span·class="p">,</span><span·class="p"·data-group-id="8970946612-23">{</span><span·class="ss">disk_log_server</span><span·class="p">,</span><span·class="ss">start_link</span><span·class="p">,</span><spa[·...·truncated·by·diffoscope;·len:·198,·SHA:·1b986366ce55c4ba1987b13dd9df6899b0db8cbbe89bf850c52ad78a339e0bb0·...·]2-22">}</span><span·class="p">,</span><span·class="w"> |
| 170 | ··············</span><span·class="p"·data-group-id=" | 170 | ··············</span><span·class="p"·data-group-id="8970946612-25">{</span><span·class="ss">restart_type</span><span·class="p">,</span><span·class="ss">permanent</span><span·class="p"·data-group-id="8970946612-25">}</span><span·class="p">,</span><span·class="w"> |
| 171 | ··············</span><span·class="p"·data-group-id=" | 171 | ··············</span><span·class="p"·data-group-id="8970946612-26">{</span><span·class="ss">shutdown</span><span·class="p">,</span><span·class="mi">2000</span><span·class="p"·data-group-id="8970946612-26">}</span><span·class="p">,</span><span·class="w"> |
| 172 | ··············</span><span·class="p"·data-group-id=" | 172 | ··············</span><span·class="p"·data-group-id="8970946612-27">{</span><span·class="ss">child_type</span><span·class="p">,</span><span·class="ss">worker</span><span·class="p"·data-group-id="8970946612-27">}</span><span·class="p"·data-group-id="8970946612-19">]</span><span·class="w"> |
| 173 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V10</span><span·class="p">.</span><span·class="mi">0</span><span·class="w">··</span><span·class="p"·data-group-id=" | 173 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V10</span><span·class="p">.</span><span·class="mi">0</span><span·class="w">··</span><span·class="p"·data-group-id="8970946612-28">(</span><span·class="ss">abort</span><span·class="w">·</span><span·class="ss">with</span><span·class="w">·</span><span·class="err">^</span><span·class="n">G</span><span·class="p"·data-group-id="8970946612-28">)</span><span·class="w"> |
| 174 | </span><span·class="mi">1</span><span·class="o">></span></code></pre> | 174 | </span><span·class="mi">1</span><span·class="o">></span></code></pre> |
| 175 | </div> | 175 | </div> |
| 176 | <div·class="bottom-actions"·id="bottom-actions"> | 176 | <div·class="bottom-actions"·id="bottom-actions"> |
| 177 | ··<div·class="bottom-actions-item"> | 177 | ··<div·class="bottom-actions-item"> |
| 178 | ······<a·href="system_principles.html"·class="bottom-actions-button"·rel="prev"> | 178 | ······<a·href="system_principles.html"·class="bottom-actions-button"·rel="prev"> |
| Offset 151, 22 lines modified | Offset 151, 22 lines modified | ||
| 151 | classes,·with·different·origins.·The·<a·href="expressions.html#try">try</a>·expression·can | 151 | classes,·with·different·origins.·The·<a·href="expressions.html#try">try</a>·expression·can |
| 152 | distinguish·between·the·different·classes,·whereas·the | 152 | distinguish·between·the·different·classes,·whereas·the |
| 153 | <a·href="expressions.html#catch-and-throw">catch</a>·expression·cannot.·<code·class="inline">try</code>·and·<code·class="inline">catch</code>·are·described | 153 | <a·href="expressions.html#catch-and-throw">catch</a>·expression·cannot.·<code·class="inline">try</code>·and·<code·class="inline">catch</code>·are·described |
| 154 | in·<a·href="expressions.html">Expressions</a>.</p><table><thead><tr><th·style="text-align:·left;"><em>Class</em></th><th·style="text-align:·left;"><em>Origin</em></th></tr></thead><tbody><tr><td·style="text-align:·left;"><code·class="inline">error</code></td><td·style="text-align:·left;">Run-time·error,·for·example,·<code·class="inline">1+a</code>,·or·the·process·called·<a·href="../../erts-15.2.3/doc/html/erlang.html#error/1"><code·class="inline">error/1</code></a></td></tr><tr><td·style="text-align:·left;"><code·class="inline">exit</code></td><td·style="text-align:·left;">The·process·called·<a·href="../../erts-15.2.3/doc/html/erlang.html#exit/1"><code·class="inline">exit/1</code></a></td></tr><tr><td·style="text-align:·left;"><code·class="inline">throw</code></td><td·style="text-align:·left;">The·process·called·<a·href="../../erts-15.2.3/doc/html/erlang.html#throw/1"><code·class="inline">throw/1</code></a></td></tr></tbody></table><p><em>Table:·Exception·Classes.</em></p><p>All·of·the·above·exceptions·can·also·be·generated·by·calling·<a·href="../../erts-15.2.3/doc/html/erlang.html#raise/3"><code·class="inline">erlang:raise/3</code></a>.</p><p>An·exception·consists·of·its·class,·an·exit·reason·(see | 154 | in·<a·href="expressions.html">Expressions</a>.</p><table><thead><tr><th·style="text-align:·left;"><em>Class</em></th><th·style="text-align:·left;"><em>Origin</em></th></tr></thead><tbody><tr><td·style="text-align:·left;"><code·class="inline">error</code></td><td·style="text-align:·left;">Run-time·error,·for·example,·<code·class="inline">1+a</code>,·or·the·process·called·<a·href="../../erts-15.2.3/doc/html/erlang.html#error/1"><code·class="inline">error/1</code></a></td></tr><tr><td·style="text-align:·left;"><code·class="inline">exit</code></td><td·style="text-align:·left;">The·process·called·<a·href="../../erts-15.2.3/doc/html/erlang.html#exit/1"><code·class="inline">exit/1</code></a></td></tr><tr><td·style="text-align:·left;"><code·class="inline">throw</code></td><td·style="text-align:·left;">The·process·called·<a·href="../../erts-15.2.3/doc/html/erlang.html#throw/1"><code·class="inline">throw/1</code></a></td></tr></tbody></table><p><em>Table:·Exception·Classes.</em></p><p>All·of·the·above·exceptions·can·also·be·generated·by·calling·<a·href="../../erts-15.2.3/doc/html/erlang.html#raise/3"><code·class="inline">erlang:raise/3</code></a>.</p><p>An·exception·consists·of·its·class,·an·exit·reason·(see |
| 155 | <a·href="errors.html#exit_reasons">Exit·Reason</a>),·and·a·stack·trace·(which·aids·in·finding | 155 | <a·href="errors.html#exit_reasons">Exit·Reason</a>),·and·a·stack·trace·(which·aids·in·finding |
| 156 | the·code·location·of·the·exception).</p><p>The·stack·trace·can·be·bound·to·a·variable·from·within·a·<code·class="inline">try</code>·expression·for | 156 | the·code·location·of·the·exception).</p><p>The·stack·trace·can·be·bound·to·a·variable·from·within·a·<code·class="inline">try</code>·expression·for |
| 157 | any·exception·class,·or·as·part·of·the·exit·reason·when·a·run-time·error·is | 157 | any·exception·class,·or·as·part·of·the·exit·reason·when·a·run-time·error·is |
| 158 | caught·by·a·<code·class="inline">catch</code>.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="p"·data-group-id=" | 158 | caught·by·a·<code·class="inline">catch</code>.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="p"·data-group-id="0726726711-1">{</span><span·class="ss">'EXIT'</span><span·class="p">,</span><span·class="p"·data-group-id="0726726711-2">{</span><span·class="ss">test</span><span·class="p">,</span><span·class="n">Stacktrace</span><span·class="p"·data-group-id="072[·...·truncated·by·diffoscope;·len:·453,·SHA:·7dff0e96e3aecdabf2679c8e8b7c3b05c60ece377a44089e10d1e326eae4f384·...·]-3">)</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Stacktrace</span><span·class="p">.</span><span·class="w"> |
| 159 | </span><span·class="p"·data-group-id=" | 159 | </span><span·class="p"·data-group-id="0726726711-5">[</span><span·class="p"·data-group-id="0726726711-6">{</span><span·class="ss">shell</span><span·class="p">,</span><span·class="ss">apply_fun</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="p"·data-g[·...·truncated·by·diffoscope;·len:·125,·SHA:·3d77ad21332123fc14111a4194bc0f20e2a984d3849a6fb31d6776bd8251a7e0·...·]-6">}</span><span·class="p">,</span><span·class="w"> |
| 160 | ·</span><span·class="p"·data-group-id=" | 160 | ·</span><span·class="p"·data-group-id="0726726711-8">{</span><span·class="ss">erl_eval</span><span·class="p">,</span><span·class="ss">do_apply</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="p"·data-group-id="0726726711-9">[</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·74,·SHA:·ce110b7929b1639a7314236b0e8988f03123e4011a56df743a489bde8a55f33c·...·]-8">}</span><span·class="p">,</span><span·class="w"> |
| 161 | ·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id=" | 161 | ·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="0726726711-5">]</span><span·class="gp·unselectable"> |
| 162 | >·</span><span·class="k">try</span><span·class="w">·</span><span·class="nf">throw</span><span·class="p"·data-group-id=" | 162 | >·</span><span·class="k">try</span><span·class="w">·</span><span·class="nf">throw</span><span·class="p"·data-group-id="0726726711-10">(</span><span·class="ss">test</span><span·class="p"·data-group-id="0726726711-10">)</span><span·class="w">·</span><span·class="k">catch</span><span·class="w">·</span><span·class="n">Class</span><span·class="p">:</span><span·class="n">Reason</span><span·class="p">:</span><span·class="n">Stacktrace</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Stacktrace</span><span·class="w">·</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 163 | </span><span·class="p"·data-group-id=" | 163 | </span><span·class="p"·data-group-id="0726726711-11">[</span><span·class="p"·data-group-id="0726726711-12">{</span><span·class="ss">shell</span><span·class="p">,</span><span·class="ss">apply_fun</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·129,·SHA:·3d5a161c5b7978e1241500f767981d383e6a2066a2f40df34378d047355e9919·...·]-12">}</span><span·class="p">,</span><span·class="w"> |
| 164 | ·</span><span·class="p"·data-group-id=" | 164 | ·</span><span·class="p"·data-group-id="0726726711-14">{</span><span·class="ss">erl_eval</span><span·class="p">,</span><span·class="ss">do_apply</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="p"·data-group-id="0726726711-15">[</span><span·class="p"·da[·...·truncated·by·diffoscope;·len:·77,·SHA:·81b8e8a0364b56ada097723bca87e7d3d4de8888ddb3df5b4a0dce4d2d5bb55c·...·]-14">}</span><span·class="p">,</span><span·class="w"> |
| 165 | ·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id=" | 165 | ·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="0726726711-11">]</span></code></pre><p><a·href=""·id="stacktrace"></a></p><h3·id="the-call-stack-back-trace-stacktrace"·class="section-heading"> |
| 166 | ··<a·href="#the-call-stack-back-trace-stacktrace"·class="hover-link"> | 166 | ··<a·href="#the-call-stack-back-trace-stacktrace"·class="hover-link"> |
| 167 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 167 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 168 | ··</a> | 168 | ··</a> |
| 169 | ··<span·class="text">The·call-stack·back·trace·(stacktrace)</span> | 169 | ··<span·class="text">The·call-stack·back·trace·(stacktrace)</span> |
| 170 | </h3> | 170 | </h3> |
| 171 | <p>The·stack·back-trace·(<a·href="../../erts-15.2.3/doc/html/erlang.html#t:stacktrace/0"><em>stacktrace</em></a>)·is·a·list·that | 171 | <p>The·stack·back-trace·(<a·href="../../erts-15.2.3/doc/html/erlang.html#t:stacktrace/0"><em>stacktrace</em></a>)·is·a·list·that |
| 172 | contains·<code·class="inline">{Module,·Function,·Arity,·ExtraInfo}</code>·and/or·<code·class="inline">{Fun,·Arity,·ExtraInfo}</code> | 172 | contains·<code·class="inline">{Module,·Function,·Arity,·ExtraInfo}</code>·and/or·<code·class="inline">{Fun,·Arity,·ExtraInfo}</code> |
| Offset 135, 43 lines modified | Offset 135, 43 lines modified | ||
| 135 | event·handler.</p><h2·id="example"·class="section-heading"> | 135 | event·handler.</p><h2·id="example"·class="section-heading"> |
| 136 | ··<a·href="#example"·class="hover-link"> | 136 | ··<a·href="#example"·class="hover-link"> |
| 137 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 137 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 138 | ··</a> | 138 | ··</a> |
| 139 | ··<span·class="text">Example</span> | 139 | ··<span·class="text">Example</span> |
| 140 | </h2> | 140 | </h2> |
| 141 | <p>The·callback·module·for·the·event·handler·writing·error·messages·to·the·terminal | 141 | <p>The·callback·module·for·the·event·handler·writing·error·messages·to·the·terminal |
| 142 | can·look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 142 | can·look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="4186578084-1">(</span><span·class="ss">terminal_logger</span><span·class="p"·data-group-id="4186578084-1">)</span><span·class="p">.</span><span·class="w"> |
| 143 | </span><span·class="p">-</span><span·class="na">behaviour</span><span·class="p"·data-group-id=" | 143 | </span><span·class="p">-</span><span·class="na">behaviour</span><span·class="p"·data-group-id="4186578084-2">(</span><span·class="ss">gen_event</span><span·class="p"·data-group-id="4186578084-2">)</span><span·class="p">.</span><span·class="w"> |
| 144 | </span><span·class="w"> | 144 | </span><span·class="w"> |
| 145 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 145 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="4186578084-3">(</span><span·class="p"·data-group-id="4186578084-4">[</span><span·class="ss">init</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">handle_event</span><span·class="p">/</s[·...·truncated·by·diffoscope;·len:·253,·SHA:·50f4946b5ad87d3641385b54b9eb42541f3080d2bd9ddd94edf88aa861278a43·...·]-3">)</span><span·class="p">.</span><span·class="w"> |
| 146 | </span><span·class="nf">init</span><span·class="p"·data-group-id=" | 146 | </span><span·class="nf">init</span><span·class="p"·data-group-id="4186578084-5">(</span><span·class="p">_</span><span·class="n">Args</span><span·class="p"·data-group-id="4186578084-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 147 | ····</span><span·class="p"·data-group-id=" | 147 | ····</span><span·class="p"·data-group-id="4186578084-6">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4186578084-7">[</span><span·class="p"·data-group-id="4186578084-7">]</span><span·class="p"·data-group-id="4186578084-6">}</span><span·class="p">.</span><span·class="w"> |
| 148 | </span><span·class="nf">handle_event</span><span·class="p"·data-group-id=" | 148 | </span><span·class="nf">handle_event</span><span·class="p"·data-group-id="4186578084-8">(</span><span·class="n">ErrorMsg</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="p"·data-group-id="4186578084-8">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 149 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 149 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="4186578084-9">(</span><span·class="s">"***Error***·</span><span·class="si">~p</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4186578084-10">[</span><span·clas[·...·truncated·by·diffoscope;·len:·116,·SHA:·c8cb2d7cd5e219276f7936932ef4dfc4ce4748e9207415074c791854efbd688b·...·]-9">)</span><span·class="p">,</span><span·class="w"> |
| 150 | ····</span><span·class="p"·data-group-id=" | 150 | ····</span><span·class="p"·data-group-id="4186578084-11">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="p"·data-group-id="4186578084-11">}</span><span·class="p">.</span><span·class="w"> |
| 151 | </span><span·class="nf">terminate</span><span·class="p"·data-group-id=" | 151 | </span><span·class="nf">terminate</span><span·class="p"·data-group-id="4186578084-12">(</span><span·class="p">_</span><span·class="n">Args</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">State</span><span·class="p"·data-group-id="4186578084-12">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 152 | ····</span><span·class="ss">ok</span><span·class="p">.</span></code></pre><p>The·callback·module·for·the·event·handler·writing·error·messages·to·a·file·can | 152 | ····</span><span·class="ss">ok</span><span·class="p">.</span></code></pre><p>The·callback·module·for·the·event·handler·writing·error·messages·to·a·file·can |
| 153 | look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 153 | look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="7428145290-1">(</span><span·class="ss">file_logger</span><span·class="p"·data-group-id="7428145290-1">)</span><span·class="p">.</span><span·class="w"> |
| 154 | </span><span·class="p">-</span><span·class="na">behaviour</span><span·class="p"·data-group-id=" | 154 | </span><span·class="p">-</span><span·class="na">behaviour</span><span·class="p"·data-group-id="7428145290-2">(</span><span·class="ss">gen_event</span><span·class="p"·data-group-id="7428145290-2">)</span><span·class="p">.</span><span·class="w"> |
| 155 | </span><span·class="w"> | 155 | </span><span·class="w"> |
| 156 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 156 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="7428145290-3">(</span><span·class="p"·data-group-id="7428145290-4">[</span><span·class="ss">init</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">handle_event</span><span·class="p">/</s[·...·truncated·by·diffoscope;·len:·253,·SHA:·5d8b86a57d1ef24fc6af125e251759ea5b3e02b95761bfe04c7eaccd8b8c90ad·...·]-3">)</span><span·class="p">.</span><span·class="w"> |
| 157 | </span><span·class="nf">init</span><span·class="p"·data-group-id=" | 157 | </span><span·class="nf">init</span><span·class="p"·data-group-id="7428145290-5">(</span><span·class="n">File</span><span·class="p"·data-group-id="7428145290-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 158 | ····</span><span·class="p"·data-group-id=" | 158 | ····</span><span·class="p"·data-group-id="7428145290-6">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Fd</span><span·class="p"·data-group-id="7428145290-6">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·clas[·...·truncated·by·diffoscope;·len:·267,·SHA:·78679ea844a69c7922932f63f4784f90557b836e876e029b71fe7b05be24e71a·...·]-7">)</span><span·class="p">,</span><span·class="w"> |
| 159 | ····</span><span·class="p"·data-group-id=" | 159 | ····</span><span·class="p"·data-group-id="7428145290-8">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Fd</span><span·class="p"·data-group-id="7428145290-8">}</span><span·class="p">.</span><span·class="w"> |
| 160 | </span><span·class="nf">handle_event</span><span·class="p"·data-group-id=" | 160 | </span><span·class="nf">handle_event</span><span·class="p"·data-group-id="7428145290-9">(</span><span·class="n">ErrorMsg</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Fd</span><span·class="p"·data-group-id="7428145290-9">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 161 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 161 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="7428145290-10">(</span><span·class="n">Fd</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"***Error***·</span><span·class="si">~p</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w[·...·truncated·by·diffoscope;·len:·190,·SHA:·5f33a440b3819c67d867cdefe4385810851b512d236c2cc02f84620f077ae099·...·]-10">)</span><span·class="p">,</span><span·class="w"> |
| 162 | ····</span><span·class="p"·data-group-id=" | 162 | ····</span><span·class="p"·data-group-id="7428145290-12">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Fd</span><span·class="p"·data-group-id="7428145290-12">}</span><span·class="p">.</span><span·class="w"> |
| 163 | </span><span·class="nf">terminate</span><span·class="p"·data-group-id=" | 163 | </span><span·class="nf">terminate</span><span·class="p"·data-group-id="7428145290-13">(</span><span·class="p">_</span><span·class="n">Args</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Fd</span><span·class="p"·data-group-id="7428145290-13">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 164 | ····</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id=" | 164 | ····</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id="7428145290-14">(</span><span·class="n">Fd</span><span·class="p"·data-group-id="7428145290-14">)</span><span·class="p">.</span></code></pre><p>The·code·is·explained·in·the·next·sections.</p><p><a·href=""·id="mgr"></a></p><h2·id="starting-an-event-manager"·class="section-heading"> |
| 165 | ··<a·href="#starting-an-event-manager"·class="hover-link"> | 165 | ··<a·href="#starting-an-event-manager"·class="hover-link"> |
| 166 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 166 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 167 | ··</a> | 167 | ··</a> |
| 168 | ··<span·class="text">Starting·an·Event·Manager</span> | 168 | ··<span·class="text">Starting·an·Event·Manager</span> |
| 169 | </h2> | 169 | </h2> |
| 170 | <p>To·start·an·event·manager·for·handling·errors,·as·described·in·the·previous | 170 | <p>To·start·an·event·manager·for·handling·errors,·as·described·in·the·previous |
| 171 | example,·call·the·following·function:</p><pre><code·class="text">gen_event:start_link({local,·error_man})</code></pre><p><a·href="../../lib/stdlib-6.2.1/doc/html/gen_event.html#start_link/1"><code·class="inline">gen_event:start_link/1</code></a>·spawns·and·links·to·a·new·event·manager·process.</p><p>The·argument,·<code·class="inline">{local,·error_man}</code>,·specifies·the·name·under·which·the | 171 | example,·call·the·following·function:</p><pre><code·class="text">gen_event:start_link({local,·error_man})</code></pre><p><a·href="../../lib/stdlib-6.2.1/doc/html/gen_event.html#start_link/1"><code·class="inline">gen_event:start_link/1</code></a>·spawns·and·links·to·a·new·event·manager·process.</p><p>The·argument,·<code·class="inline">{local,·error_man}</code>,·specifies·the·name·under·which·the |
| Offset 184, 57 lines modified | Offset 184, 57 lines modified | ||
| 184 | manager·that·is·not·part·of·a·supervision·tree.</p><h2·id="adding-an-event-handler"·class="section-heading"> | 184 | manager·that·is·not·part·of·a·supervision·tree.</p><h2·id="adding-an-event-handler"·class="section-heading"> |
| 185 | ··<a·href="#adding-an-event-handler"·class="hover-link"> | 185 | ··<a·href="#adding-an-event-handler"·class="hover-link"> |
| 186 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 186 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 187 | ··</a> | 187 | ··</a> |
| 188 | ··<span·class="text">Adding·an·Event·Handler</span> | 188 | ··<span·class="text">Adding·an·Event·Handler</span> |
| 189 | </h2> | 189 | </h2> |
| 190 | <p>The·following·example·shows·how·to·start·an·event·manager·and·add·an·event | 190 | <p>The·following·example·shows·how·to·start·an·event·manager·and·add·an·event |
| 191 | handler·to·it·by·using·the·shell:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">gen_event</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 191 | handler·to·it·by·using·the·shell:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">gen_event</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="9058862588-1">(</span><span·class="p"·data-group-id="9058862588-2">{</span><span·class="ss">local</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">error_man</span><span·class="p"·data-group-id="9058862588-2">}</span><span·class="p"·da[·...·truncated·by·diffoscope;·len:·23,·SHA:·2805af7270f54d73b0e7a9b960bac8133253005dac0dc5735e7c3a1280c147fd·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 192 | </span><span·class="p"·data-group-id=" | 192 | </span><span·class="p"·data-group-id="9058862588-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.31</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="9058862588-3">}</span><span·class="gp·unselectable"> |
| 193 | 2>·</span><span·class="nc">gen_event</span><span·class="p">:</span><span·class="nf">add_handler</span><span·class="p"·data-group-id=" | 193 | 2>·</span><span·class="nc">gen_event</span><span·class="p">:</span><span·class="nf">add_handler</span><span·class="p"·data-group-id="9058862588-4">(</span><span·class="ss">error_man</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">terminal_logger</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9058862588-5">[</span><span·class="[·...·truncated·by·diffoscope;·len:·81,·SHA:·57cec49cbba88f9a0712395e289949925c686859850d8c54c9837a9e2d09191a·...·]-4">)</span><span·class="p">.</span><span·class="w"> |
| 194 | </span><span·class="ss">ok</span></code></pre><p>This·function·sends·a·message·to·the·event·manager·registered·as·<code·class="inline">error_man</code>, | 194 | </span><span·class="ss">ok</span></code></pre><p>This·function·sends·a·message·to·the·event·manager·registered·as·<code·class="inline">error_man</code>, |
| 195 | telling·it·to·add·the·event·handler·<code·class="inline">terminal_logger</code>.·The·event·manager·calls | 195 | telling·it·to·add·the·event·handler·<code·class="inline">terminal_logger</code>.·The·event·manager·calls |
| 196 | the·callback·function·<code·class="inline">terminal_logger:init([])</code>,·where·the·argument·<code·class="inline">[]</code>·is·the | 196 | the·callback·function·<code·class="inline">terminal_logger:init([])</code>,·where·the·argument·<code·class="inline">[]</code>·is·the |
| 197 | third·argument·to·<code·class="inline">add_handler</code>.·<code·class="inline">init/1</code>·is·expected·to·return·<code·class="inline">{ok,·State}</code>, | 197 | third·argument·to·<code·class="inline">add_handler</code>.·<code·class="inline">init/1</code>·is·expected·to·return·<code·class="inline">{ok,·State}</code>, |
| 198 | where·<code·class="inline">State</code>·is·the·internal·state·of·the·event·handler.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">init</span><span·class="p"·data-group-id="9492416018-1">(</span><span·class="p">_</span><span·class="n">Args</span><span·class="p"·data-group-id="9492416018-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | ||
| 199 | 198 | where·<code·class="inline">State</code>·is·the·internal·state·of·the·event·handler.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">init</span><span·class="p"·data-group-id="9143465008-1">(</span><span·class="p">_</span><span·class="n">[·...·truncated·by·diffoscope;·len:·132,·SHA:·78ccd3dff33a088389d57fe3c2b23a377c2080e4d791c1bc572c51bf50ce627c·...·] | |
| 199 | ····</span><span·class="p"·data-group-id="9143465008-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9143465008-3">[</span><span·class="p"·data-group-id="9143465008-3">]</span><span·class="p"·data-group-id="9143465008-2">}</span><span·class="p">.</span></code></pre><p>Here,·<code·class="inline">init/1</code>·does·not·need·any·input·data·and·ignores·its·argument.·For | ||
| 200 | <code·class="inline">terminal_logger</code>,·the·internal·state·is·not·used.·For·<code·class="inline">file_logger</code>,·the | 200 | <code·class="inline">terminal_logger</code>,·the·internal·state·is·not·used.·For·<code·class="inline">file_logger</code>,·the |
| 201 | internal·state·is·used·to·save·the·open·file·descriptor.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">init</span><span·class="p"·data-group-id=" | 201 | internal·state·is·used·to·save·the·open·file·descriptor.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">init</span><span·class="p"·data-group-id="9430208098-1">(</span><span·class="n">File</span><span·class="p"·data-group-id="9430208098-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 202 | ····</span><span·class="p"·data-group-id=" | 202 | ····</span><span·class="p"·data-group-id="9430208098-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Fd</span><span·class="p"·data-group-id="9430208098-2">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·clas[·...·truncated·by·diffoscope;·len:·265,·SHA:·51faac41df97a6569220605a51fb2e2f7adea5fb1ea6de0cf50a027b5379baf9·...·]98-3">)</span><span·class="p">,</span><span·class="w"> |
| 203 | ····</span><span·class="p"·data-group-id=" | 203 | ····</span><span·class="p"·data-group-id="9430208098-4">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Fd</span><span·class="p"·data-group-id="9430208098-4">}</span><span·class="p">.</span></code></pre><h2·id="notifying-about-events"·class="section-heading"> |
| 204 | ··<a·href="#notifying-about-events"·class="hover-link"> | 204 | ··<a·href="#notifying-about-events"·class="hover-link"> |
| 205 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 205 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 206 | ··</a> | 206 | ··</a> |
| 207 | ··<span·class="text">Notifying·about·Events</span> | 207 | ··<span·class="text">Notifying·about·Events</span> |
| 208 | </h2> | 208 | </h2> |
| 209 | <pre><code·class="text">3>·gen_event:notify(error_man,·no_reply). | 209 | <pre><code·class="text">3>·gen_event:notify(error_man,·no_reply). |
| 210 | ***Error***·no_reply | 210 | ***Error***·no_reply |
| 211 | ok</code></pre><p><code·class="inline">error_man</code>·is·the·name·of·the·event·manager·and·<code·class="inline">no_reply</code>·is·the·event.</p><p>The·event·is·made·into·a·message·and·sent·to·the·event·manager.·When·the·event | 211 | ok</code></pre><p><code·class="inline">error_man</code>·is·the·name·of·the·event·manager·and·<code·class="inline">no_reply</code>·is·the·event.</p><p>The·event·is·made·into·a·message·and·sent·to·the·event·manager.·When·the·event |
| 212 | is·received,·the·event·manager·calls·<code·class="inline">handle_event(Event,·State)</code>·for·each | 212 | is·received,·the·event·manager·calls·<code·class="inline">handle_event(Event,·State)</code>·for·each |
| 213 | installed·event·handler,·in·the·same·order·as·they·were·added.·The·function·is | 213 | installed·event·handler,·in·the·same·order·as·they·were·added.·The·function·is |
| 214 | expected·to·return·a·tuple·<code·class="inline">{ok,State1}</code>,·where·<code·class="inline">State1</code>·is·a·new·value·for·the | 214 | expected·to·return·a·tuple·<code·class="inline">{ok,State1}</code>,·where·<code·class="inline">State1</code>·is·a·new·value·for·the |
| 215 | state·of·the·event·handler.</p><p>In·<code·class="inline">terminal_logger</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">handle_event</span><span·class="p"·data-group-id="8836285059-1">(</span><span·class="n">ErrorMsg</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="p"·data-group-id="8836285059-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | ||
| 216 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="8836285059-2">(</span><span·class="s">"***Error***·</span><span·class="si">~p</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8836285059-3">[</span><span·class="n">ErrorMsg</span><span·class="p"·data-group-id="8836285059-3">]</span><span·class="p"·data-group-id="8836285059-2">)</span><span·class="p">,</span><span·class="w"> | ||
| 217 | ····</ | 215 | state·of·the·event·handler.</p><p>In·<code·class="inline">terminal_logger</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">handle_event</span><span·class="p"·data-group-id="7889147832-1">(</span><span·class="n">ErrorMsg</span><sp[·...·truncated·by·diffoscope;·len:·114,·SHA:·bf1c16b2b386ff6107e9605f8bba52e123d24e01fcb50d702d208a357818d503·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 216 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="7889147832-2">(</span><span·class="s">"***Error***·</span><span·class="si">~p</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7889147832-3">[</span><span·class="n">ErrorMsg</span><span·class="p"·data-group-id="7889147832-3">]</span><span·class="p"·data-group-id="7889147832-2">)</span><span·class="p">,</span><span·class="w"> | ||
| 217 | ····</span><span·class="p"·data-group-id="7889147832-4">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="p"·data-group-id="7889147832-4">}</span><span·class="p">.</span></code></pre><p>In·<code·class="inline">file_logger</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">handle_event</span><span·class="p"·data-group-id="7274308089-1">(</span><span·class="n">ErrorMsg</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Fd</span><span·class="p"·data-group-id="7274308089-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | ||
| 218 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 218 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="7274308089-2">(</span><span·class="n">Fd</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"***Error***·</span><span·class="si">~p</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w"[·...·truncated·by·diffoscope;·len:·187,·SHA:·6c4bc9aa641e6d53499ca42a26bcc7e39189f34493c6c634f5fef4b506e30a23·...·]-2">)</span><span·class="p">,</span><span·class="w"> |
| 219 | ····</span><span·class="p"·data-group-id=" | 219 | ····</span><span·class="p"·data-group-id="7274308089-4">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Fd</span><span·class="p"·data-group-id="7274308089-4">}</span><span·class="p">.</span></code></pre><h2·id="deleting-an-event-handler"·class="section-heading"> |
| 220 | ··<a·href="#deleting-an-event-handler"·class="hover-link"> | 220 | ··<a·href="#deleting-an-event-handler"·class="hover-link"> |
| 221 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 221 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 222 | ··</a> | 222 | ··</a> |
| 223 | ··<span·class="text">Deleting·an·Event·Handler</span> | 223 | ··<span·class="text">Deleting·an·Event·Handler</span> |
| 224 | </h2> | 224 | </h2> |
| 225 | <pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">4>·</span><span·class="nc">gen_event</span><span·class="p">:</span><span·class="nf">delete_handler</span><span·class="p"·data-group-id=" | 225 | <pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">4>·</span><span·class="nc">gen_event</span><span·class="p">:</span><span·class="nf">delete_handler</span><span·class="p"·data-group-id="5734082714-1">(</span><span·class="ss">error_man</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">terminal_logger</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5734082714-2">[</span><span·class="[·...·truncated·by·diffoscope;·len:·81,·SHA:·7d04d5c7ffe388af91515772398acc177e697db93ff17b0c4d6d903019195691·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 226 | </span><span·class="ss">ok</span></code></pre><p>This·function·sends·a·message·to·the·event·manager·registered·as·<code·class="inline">error_man</code>, | 226 | </span><span·class="ss">ok</span></code></pre><p>This·function·sends·a·message·to·the·event·manager·registered·as·<code·class="inline">error_man</code>, |
| 227 | telling·it·to·delete·the·event·handler·<code·class="inline">terminal_logger</code>.·The·event·manager | 227 | telling·it·to·delete·the·event·handler·<code·class="inline">terminal_logger</code>.·The·event·manager |
| 228 | calls·the·callback·function·<code·class="inline">terminal_logger:terminate([],·State)</code>,·where·the | 228 | calls·the·callback·function·<code·class="inline">terminal_logger:terminate([],·State)</code>,·where·the |
| 229 | argument·<code·class="inline">[]</code>·is·the·third·argument·to·<code·class="inline">delete_handler</code>.·<code·class="inline">terminate/2</code>·is·to·be | 229 | argument·<code·class="inline">[]</code>·is·the·third·argument·to·<code·class="inline">delete_handler</code>.·<code·class="inline">terminate/2</code>·is·to·be |
| 230 | the·opposite·of·<code·class="inline">init/1</code>·and·do·any·necessary·cleaning·up.·Its·return·value·is | 230 | the·opposite·of·<code·class="inline">init/1</code>·and·do·any·necessary·cleaning·up.·Its·return·value·is |
| 231 | ignored.</p><p>For·<code·class="inline">terminal_logger</code>,·no·cleaning·up·is·necessary:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">terminate</span><span·class="p"·data-group-id=" | 231 | ignored.</p><p>For·<code·class="inline">terminal_logger</code>,·no·cleaning·up·is·necessary:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">terminate</span><span·class="p"·data-group-id="1883828617-1">(</span><span·class="p">_</span><span·class="n">Args</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">State</span><span·class="p"·data-group-id="1883828617-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 232 | ····</span><span·class="ss">ok</span><span·class="p">.</span></code></pre><p>For·<code·class="inline">file_logger</code>,·the·file·descriptor·opened·in·<code·class="inline">init</code>·must·be·closed:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">terminate</span><span·class="p"·data-group-id=" | 232 | ····</span><span·class="ss">ok</span><span·class="p">.</span></code></pre><p>For·<code·class="inline">file_logger</code>,·the·file·descriptor·opened·in·<code·class="inline">init</code>·must·be·closed:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">terminate</span><span·class="p"·data-group-id="4814617485-1">(</span><span·class="p">_</span><span·class="n">Args</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Fd</span><span·class="p"·data-group-id="4814617485-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 233 | ····</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id=" | 233 | ····</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id="4814617485-2">(</span><span·class="n">Fd</span><span·class="p"·data-group-id="4814617485-2">)</span><span·class="p">.</span></code></pre><h2·id="stopping"·class="section-heading"> |
| 234 | ··<a·href="#stopping"·class="hover-link"> | 234 | ··<a·href="#stopping"·class="hover-link"> |
| 235 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 235 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 236 | ··</a> | 236 | ··</a> |
| 237 | ··<span·class="text">Stopping</span> | 237 | ··<span·class="text">Stopping</span> |
| 238 | </h2> | 238 | </h2> |
| 239 | <p>When·an·event·manager·is·stopped,·it·gives·each·of·the·installed·event·handlers | 239 | <p>When·an·event·manager·is·stopped,·it·gives·each·of·the·installed·event·handlers |
| 240 | the·chance·to·clean·up·by·calling·<code·class="inline">terminate/2</code>,·the·same·way·as·when·deleting·a | 240 | the·chance·to·clean·up·by·calling·<code·class="inline">terminate/2</code>,·the·same·way·as·when·deleting·a |
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| 249 | this·is·done·is·defined·by·a·<a·href="sup_princ.html#shutdown">shutdown·strategy</a>·set·in | 249 | this·is·done·is·defined·by·a·<a·href="sup_princ.html#shutdown">shutdown·strategy</a>·set·in |
| 250 | the·supervisor.</p><h3·id="standalone-event-managers"·class="section-heading"> | 250 | the·supervisor.</p><h3·id="standalone-event-managers"·class="section-heading"> |
| 251 | ··<a·href="#standalone-event-managers"·class="hover-link"> | 251 | ··<a·href="#standalone-event-managers"·class="hover-link"> |
| 252 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 252 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 253 | ··</a> | 253 | ··</a> |
| 254 | ··<span·class="text">Standalone·Event·Managers</span> | 254 | ··<span·class="text">Standalone·Event·Managers</span> |
| 255 | </h3> | 255 | </h3> |
| 256 | <p>An·event·manager·can·also·be·stopped·by·calling:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">gen_event</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id=" | 256 | <p>An·event·manager·can·also·be·stopped·by·calling:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">gen_event</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id="3323402965-1">(</span><span·class="ss">error_man</span><span·class="p"·data-group-id="3323402965-1">)</span><span·class="p">.</span><span·class="w"> |
| 257 | </span><span·class="ss">ok</span></code></pre><h2·id="handling-other-messages"·class="section-heading"> | 257 | </span><span·class="ss">ok</span></code></pre><h2·id="handling-other-messages"·class="section-heading"> |
| 258 | ··<a·href="#handling-other-messages"·class="hover-link"> | 258 | ··<a·href="#handling-other-messages"·class="hover-link"> |
| 259 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 259 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 260 | ··</a> | 260 | ··</a> |
| 261 | ··<span·class="text">Handling·Other·Messages</span> | 261 | ··<span·class="text">Handling·Other·Messages</span> |
| 262 | </h2> | 262 | </h2> |
| 263 | <p>If·the·<code·class="inline">gen_event</code>·process·is·to·be·able·to·receive·other·messages | 263 | <p>If·the·<code·class="inline">gen_event</code>·process·is·to·be·able·to·receive·other·messages |
| 264 | than·events,·the·callback·function·<code·class="inline">handle_info(Info,·State)</code>·must·be | 264 | than·events,·the·callback·function·<code·class="inline">handle_info(Info,·State)</code>·must·be |
| 265 | implemented·to·handle·them.·Examples·of·other·messages·are·exit | 265 | implemented·to·handle·them.·Examples·of·other·messages·are·exit |
| 266 | messages·if·the·event·manager·is·linked·to·other·processes·than·the | 266 | messages·if·the·event·manager·is·linked·to·other·processes·than·the |
| 267 | supervisor·(for·example·via·<a·href="../../lib/stdlib-6.2.1/doc/html/gen_event.html#add_sup_handler/3"><code·class="inline">gen_event:add_sup_handler/3</code></a>)·and·is | 267 | supervisor·(for·example·via·<a·href="../../lib/stdlib-6.2.1/doc/html/gen_event.html#add_sup_handler/3"><code·class="inline">gen_event:add_sup_handler/3</code></a>)·and·is |
| 268 | trapping·exit·signals.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">handle_info</span><span·class="p"·data-group-id=" | 268 | trapping·exit·signals.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">handle_info</span><span·class="p"·data-group-id="9936867530-1">(</span><span·class="p"·data-group-id="9936867530-2">{</span><span·class="ss">'EXIT'</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pid</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reaso[·...·truncated·by·diffoscope;·len:·177,·SHA:·7037c518275bfccdae05b912507c53fd20c17d8fd740d4408f4b8ca42a00195e·...·]0-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 269 | ····</span><span·class="c1">%%·Code·to·handle·exits·here.</span><span·class="w"> | 269 | ····</span><span·class="c1">%%·Code·to·handle·exits·here.</span><span·class="w"> |
| 270 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 270 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
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| 131 | int·bar(int·y)·{ | 131 | int·bar(int·y)·{ |
| 132 | ··return·y*2; | 132 | ··return·y*2; |
| 133 | }</code></pre><p>The·functions·are·deliberately·kept·as·simple·as·possible,·for·readability | 133 | }</code></pre><p>The·functions·are·deliberately·kept·as·simple·as·possible,·for·readability |
| 134 | reasons.</p><p>From·an·Erlang·perspective,·it·is·preferable·to·be·able·to·call·<code·class="inline">foo</code>·and·<code·class="inline">bar</code> | 134 | reasons.</p><p>From·an·Erlang·perspective,·it·is·preferable·to·be·able·to·call·<code·class="inline">foo</code>·and·<code·class="inline">bar</code> |
| 135 | without·having·to·bother·about·that·they·are·C·functions:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·Erlang·code</span><span·class="w"> | 135 | without·having·to·bother·about·that·they·are·C·functions:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·Erlang·code</span><span·class="w"> |
| 136 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 136 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 137 | </span><span·class="n">Res</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">complex</span><span·class="p">:</span><span·class="nf">foo</span><span·class="p"·data-group-id=" | 137 | </span><span·class="n">Res</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">complex</span><span·class="p">:</span><span·class="nf">foo</span><span·class="p"·data-group-id="0537533995-1">(</span><span·class="n">X</span><span·class="p"·data-group-id="0537533995-1">)</span><span·class="p">,</span><span·class="w"> |
| 138 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>Here,·the·communication·with·C·is·hidden·in·the·implementation·of·<code·class="inline">complex.erl</code>. | 138 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>Here,·the·communication·with·C·is·hidden·in·the·implementation·of·<code·class="inline">complex.erl</code>. |
| 139 | In·the·following·sections,·it·is·shown·how·this·module·can·be·implemented·using | 139 | In·the·following·sections,·it·is·shown·how·this·module·can·be·implemented·using |
| 140 | the·different·interoperability·mechanisms.</p> | 140 | the·different·interoperability·mechanisms.</p> |
| 141 | </div> | 141 | </div> |
| 142 | <div·class="bottom-actions"·id="bottom-actions"> | 142 | <div·class="bottom-actions"·id="bottom-actions"> |
| 143 | ··<div·class="bottom-actions-item"> | 143 | ··<div·class="bottom-actions-item"> |
| Offset 151, 81 lines modified | Offset 151, 81 lines modified | ||
| 151 | </span><span·class="n">Phone_number</span><span·class="w"> | 151 | </span><span·class="n">Phone_number</span><span·class="w"> |
| 152 | </span><span·class="p">_</span><span·class="w"> | 152 | </span><span·class="p">_</span><span·class="w"> |
| 153 | </span><span·class="p">_</span><span·class="n">Height</span><span·class="w"> | 153 | </span><span·class="p">_</span><span·class="n">Height</span><span·class="w"> |
| 154 | </span><span·class="ss">name@node</span></code></pre><p>Variables·are·bound·to·values·using·<a·href="patterns.html">pattern·matching</a>.·Erlang·uses | 154 | </span><span·class="ss">name@node</span></code></pre><p>Variables·are·bound·to·values·using·<a·href="patterns.html">pattern·matching</a>.·Erlang·uses |
| 155 | <em>single·assignment</em>,·that·is,·a·variable·can·only·be·bound·once.</p><p>The·<em>anonymous·variable</em>·is·denoted·by·underscore·(_)·and·can·be·used·when·a | 155 | <em>single·assignment</em>,·that·is,·a·variable·can·only·be·bound·once.</p><p>The·<em>anonymous·variable</em>·is·denoted·by·underscore·(_)·and·can·be·used·when·a |
| 156 | variable·is·required·but·its·value·can·be·ignored.</p><p><em>Example:</em></p><pre><code·class="text">[H|_]·=·[1,2,3]</code></pre><p>Variables·starting·with·underscore·(<code·class="inline">_</code>),·for·example,·<code·class="inline">_Height</code>,·are·normal | 156 | variable·is·required·but·its·value·can·be·ignored.</p><p><em>Example:</em></p><pre><code·class="text">[H|_]·=·[1,2,3]</code></pre><p>Variables·starting·with·underscore·(<code·class="inline">_</code>),·for·example,·<code·class="inline">_Height</code>,·are·normal |
| 157 | variables,·not·anonymous.·However,·they·are·ignored·by·the·compiler·in·the·sense | 157 | variables,·not·anonymous.·However,·they·are·ignored·by·the·compiler·in·the·sense |
| 158 | that·they·do·not·generate·warnings.</p><p><em>Example:</em></p><p>The·following·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">member</span><span·class="p"·data-group-id="5999089814-1">(</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5999089814-2">[</span><span·class="p"·data-group-id="5999089814-2">]</span><span·class="p"·data-group-id="5999089814-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | ||
| 159 | 158 | that·they·do·not·generate·warnings.</p><p><em>Example:</em></p><p>The·following·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">member</span><span·class="p"·data-group-id="6432242662-1">(</span><span·class="p">_</span><span·class=[·...·truncated·by·diffoscope;·len:·183,·SHA:·b0d96ab6bee6a8788a85263dfedd2fa6244168a1ea6dadbac2b01639e5110c59·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | |
| 159 | ····</span><span·class="p"·data-group-id="6432242662-3">[</span><span·class="p"·data-group-id="6432242662-3">]</span><span·class="p">.</span></code></pre><p>can·be·rewritten·to·be·more·readable:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">member</span><span·class="p"·data-group-id="3793441288-1">(</span><span·class="n">Elem</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3793441288-2">[</span><span·class="p"·data-group-id="3793441288-2">]</span><span·class="p"·data-group-id="3793441288-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | ||
| 160 | ····</span><span·class="p"·data-group-id=" | 160 | ····</span><span·class="p"·data-group-id="3793441288-3">[</span><span·class="p"·data-group-id="3793441288-3">]</span><span·class="p">.</span></code></pre><p>This·causes·a·warning·for·an·unused·variable,·<code·class="inline">Elem</code>.·To·avoid·the·warning, |
| 161 | the·code·can·be·rewritten·to:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">member</span><span·class="p"·data-group-id=" | 161 | the·code·can·be·rewritten·to:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">member</span><span·class="p"·data-group-id="5167970085-1">(</span><span·class="p">_</span><span·class="n">Elem</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5167970085-2">[</span><span·class="p"·data-group-id="5167970085-2">]</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·12,·SHA:·0569a841bdbadc5f1b950b0d0466a73a6ceb0c1c112e722fdc52a38d850e797b·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 162 | ····</span><span·class="p"·data-group-id=" | 162 | ····</span><span·class="p"·data-group-id="5167970085-3">[</span><span·class="p"·data-group-id="5167970085-3">]</span><span·class="p">.</span></code></pre><p>Notice·that·since·variables·starting·with·an·underscore·are·not·anonymous,·the |
| 163 | following·example·matches:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="7 | 163 | following·example·matches:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="9075583943-1">{</span><span·class="p">_</span><span·class="p">,</span><span·class="p">_</span><span·class="p"·data-group-id="9075583943-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="907558[·...·truncated·by·diffoscope;·len:·700,·SHA:·395583b721c13ccf3e511275636cdb8d141c32e4d85e603dc5910622051603e0·...·]-2">}</span></code></pre><p>The·scope·for·a·variable·is·its·function·clause.·Variables·bound·in·a·branch·of |
| 164 | an·<code·class="inline">if</code>,·<code·class="inline">case</code>,·or·<code·class="inline">receive</code>·expression·must·be·bound·in·all·branches·to·have·a | 164 | an·<code·class="inline">if</code>,·<code·class="inline">case</code>,·or·<code·class="inline">receive</code>·expression·must·be·bound·in·all·branches·to·have·a |
| 165 | value·outside·the·expression.·Otherwise·they·are·regarded·as·unsafe·outside | 165 | value·outside·the·expression.·Otherwise·they·are·regarded·as·unsafe·outside |
| 166 | the·expression.</p><p>For·the·<code·class="inline">try</code>·expression·variable·scoping·is·limited·so·that·variables·bound·in | 166 | the·expression.</p><p>For·the·<code·class="inline">try</code>·expression·variable·scoping·is·limited·so·that·variables·bound·in |
| 167 | the·expression·are·always·unsafe·outside·the·expression.</p><h2·id="patterns"·class="section-heading"> | 167 | the·expression·are·always·unsafe·outside·the·expression.</p><h2·id="patterns"·class="section-heading"> |
| 168 | ··<a·href="#patterns"·class="hover-link"> | 168 | ··<a·href="#patterns"·class="hover-link"> |
| 169 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 169 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 170 | ··</a> | 170 | ··</a> |
| 171 | ··<span·class="text">Patterns</span> | 171 | ··<span·class="text">Patterns</span> |
| 172 | </h2> | 172 | </h2> |
| 173 | <p>A·pattern·has·the·same·structure·as·a·term·but·can·contain·unbound·variables.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Name1</span><span·class="w"> | 173 | <p>A·pattern·has·the·same·structure·as·a·term·but·can·contain·unbound·variables.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Name1</span><span·class="w"> |
| 174 | </span><span·class="p"·data-group-id="16 | 174 | </span><span·class="p"·data-group-id="2167527090-1">[</span><span·class="n">H</span><span·class="p">|</span><span·class="n">T</span><span·class="p"·data-group-id="2167527090-1">]</span><span·class="w"> |
| 175 | </span><span·class="p"·data-group-id="16 | 175 | </span><span·class="p"·data-group-id="2167527090-2">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="n">Reason</span><span·class="p"·data-group-id="2167527090-2">}</span></code></pre><p>Patterns·are·allowed·in·clause·heads,·<a·href="expressions.html#case">case·expressions</a>, |
| 176 | <a·href="expressions.html#receive">receive·expressions</a>,·and | 176 | <a·href="expressions.html#receive">receive·expressions</a>,·and |
| 177 | <a·href="expressions.html#the-match-operator">match·expressions</a>.</p><h3·id="the-compound-pattern-operator"·class="section-heading"> | 177 | <a·href="expressions.html#the-match-operator">match·expressions</a>.</p><h3·id="the-compound-pattern-operator"·class="section-heading"> |
| 178 | ··<a·href="#the-compound-pattern-operator"·class="hover-link"> | 178 | ··<a·href="#the-compound-pattern-operator"·class="hover-link"> |
| 179 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 179 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 180 | ··</a> | 180 | ··</a> |
| 181 | ··<span·class="text">The·Compound·Pattern·Operator</span> | 181 | ··<span·class="text">The·Compound·Pattern·Operator</span> |
| 182 | </h3> | 182 | </h3> |
| 183 | <p>If·<code·class="inline">Pattern1</code>·and·<code·class="inline">Pattern2</code>·are·valid·patterns,·the·following·is·also·a·valid | 183 | <p>If·<code·class="inline">Pattern1</code>·and·<code·class="inline">Pattern2</code>·are·valid·patterns,·the·following·is·also·a·valid |
| 184 | pattern:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Pattern1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Pattern2</span></code></pre><p>When·matched·against·a·term,·both·<code·class="inline">Pattern1</code>·and·<code·class="inline">Pattern2</code>·are·matched·against | 184 | pattern:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Pattern1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Pattern2</span></code></pre><p>When·matched·against·a·term,·both·<code·class="inline">Pattern1</code>·and·<code·class="inline">Pattern2</code>·are·matched·against |
| 185 | the·term.·The·idea·behind·this·feature·is·to·avoid·reconstruction·of·terms.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">f</span><span·class="p"·data-group-id=" | 185 | the·term.·The·idea·behind·this·feature·is·to·avoid·reconstruction·of·terms.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">f</span><span·class="p"·data-group-id="7154126097-1">(</span><span·class="p"·data-group-id="7154126097-2">{</span><span·class="ss">connect</span><span·class="p">,</span><span·class="n">From</span><span·class="p">,</span><span·class="n">To</span><span·class="p">,</span><span·class="n">Number</sp[·...·truncated·by·diffoscope;·len:·224,·SHA:·2da77f2491428d4884266f4d0bfeb871ba1b0b45b4a1040df5c4c5af20664788·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 186 | ····</span><span·class="n">Signal</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 186 | ····</span><span·class="n">Signal</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7154126097-3">{</span><span·class="ss">connect</span><span·class="p">,</span><span·class="n">From</span><span·class="p">,</span><span·class="n">To</span><span·class="p">,</span><span·class="n">Number</span><span·class="p">,</span><span·class="n">Options</s[·...·truncated·by·diffoscope;·len:·45,·SHA:·7db24acc8711fc5b3c083e8eacf80c22851590422373cd3c949a397aefdedf14·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 187 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">;</span><span·class="w"> | 187 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">;</span><span·class="w"> |
| 188 | </span><span·class="nf">f</span><span·class="p"·data-group-id=" | 188 | </span><span·class="nf">f</span><span·class="p"·data-group-id="7154126097-4">(</span><span·class="n">Signal</span><span·class="p">,</span><span·class="w">·</span><span·class="n">To</span><span·class="p"·data-group-id="7154126097-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 189 | ····</span><span·class="ss">ignore</span><span·class="p">.</span></code></pre><p>can·instead·be·written·as</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">f</span><span·class="p"·data-group-id=" | 189 | ····</span><span·class="ss">ignore</span><span·class="p">.</span></code></pre><p>can·instead·be·written·as</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">f</span><span·class="p"·data-group-id="1828530194-1">(</span><span·class="p"·data-group-id="1828530194-2">{</span><span·class="ss">connect</span><span·class="p">,</span><span·class="p">_</span><span·class="p">,</span><span·class="n">To</span><span·class="p">,</span><span·class="p">_</span><span[·...·truncated·by·diffoscope;·len:·311,·SHA:·dff581e3c2aaaa6755fed47e31d4c7298d471578b0b03ce7ee905f457ea42a28·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 190 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">;</span><span·class="w"> | 190 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">;</span><span·class="w"> |
| 191 | </span><span·class="nf">f</span><span·class="p"·data-group-id=" | 191 | </span><span·class="nf">f</span><span·class="p"·data-group-id="1828530194-3">(</span><span·class="n">Signal</span><span·class="p">,</span><span·class="w">·</span><span·class="n">To</span><span·class="p"·data-group-id="1828530194-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 192 | ····</span><span·class="ss">ignore</span><span·class="p">.</span></code></pre><p>The·compound·pattern·operator·does·not·imply·that·its·operands·are·matched·in | 192 | ····</span><span·class="ss">ignore</span><span·class="p">.</span></code></pre><p>The·compound·pattern·operator·does·not·imply·that·its·operands·are·matched·in |
| 193 | any·particular·order.·That·means·that·it·is·not·legal·to·bind·a·variable·in | 193 | any·particular·order.·That·means·that·it·is·not·legal·to·bind·a·variable·in |
| 194 | <code·class="inline">Pattern1</code>·and·use·it·in·<code·class="inline">Pattern2</code>,·or·vice·versa.</p><h3·id="string-prefix-in-patterns"·class="section-heading"> | 194 | <code·class="inline">Pattern1</code>·and·use·it·in·<code·class="inline">Pattern2</code>,·or·vice·versa.</p><h3·id="string-prefix-in-patterns"·class="section-heading"> |
| 195 | ··<a·href="#string-prefix-in-patterns"·class="hover-link"> | 195 | ··<a·href="#string-prefix-in-patterns"·class="hover-link"> |
| 196 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 196 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 197 | ··</a> | 197 | ··</a> |
| 198 | ··<span·class="text">String·Prefix·in·Patterns</span> | 198 | ··<span·class="text">String·Prefix·in·Patterns</span> |
| 199 | </h3> | 199 | </h3> |
| 200 | <p>When·matching·strings,·the·following·is·a·valid·pattern:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">f</span><span·class="p"·data-group-id=" | 200 | <p>When·matching·strings,·the·following·is·a·valid·pattern:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">f</span><span·class="p"·data-group-id="2910521901-1">(</span><span·class="s">"prefix"</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="n">Str</span><span·class="p"·data-group-id="2910521901-1">)</span><span·class="w">·</span><span·class="p">-[·...·truncated·by·diffoscope;·len:·837,·SHA:·0b9bf6b54228acec8917e41ee66160fb1e504b274a811f6b84936882e63e19c4·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><h3·id="expressions-in-patterns"·class="section-heading"> |
| 201 | ··<a·href="#expressions-in-patterns"·class="hover-link"> | 201 | ··<a·href="#expressions-in-patterns"·class="hover-link"> |
| 202 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 202 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 203 | ··</a> | 203 | ··</a> |
| 204 | ··<span·class="text">Expressions·in·Patterns</span> | 204 | ··<span·class="text">Expressions·in·Patterns</span> |
| 205 | </h3> | 205 | </h3> |
| 206 | <p>An·arithmetic·expression·can·be·used·within·a·pattern·if·it·meets·both·of·the | 206 | <p>An·arithmetic·expression·can·be·used·within·a·pattern·if·it·meets·both·of·the |
| 207 | following·two·conditions:</p><ul><li>It·uses·only·numeric·or·bitwise·operators.</li><li>Its·value·can·be·evaluated·to·a·constant·when·complied.</li></ul><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">case</span><span·class="w">·</span><span·class="p"·data-group-id=" | 207 | following·two·conditions:</p><ul><li>It·uses·only·numeric·or·bitwise·operators.</li><li>Its·value·can·be·evaluated·to·a·constant·when·complied.</li></ul><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">case</span><span·class="w">·</span><span·class="p"·data-group-id="9966161243-1">{</span><span·class="n">Value</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Result</span><span·class="p"·data-group-id="9966161243-1">}</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 208 | ····</span><span·class="p"·data-group-id=" | 208 | ····</span><span·class="p"·data-group-id="9966161243-2">{</span><span·class="o">?</span><span·class="n">THRESHOLD</span><span·class="o">+</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ok</span><span·class="p"·data-group-id="9966161243-2">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><h2·id="the-match-operator"·class="section-heading"> |
| 209 | ··<a·href="#the-match-operator"·class="hover-link"> | 209 | ··<a·href="#the-match-operator"·class="hover-link"> |
| 210 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 210 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 211 | ··</a> | 211 | ··</a> |
| 212 | ··<span·class="text">The·Match·Operator</span> | 212 | ··<span·class="text">The·Match·Operator</span> |
| 213 | </h2> | 213 | </h2> |
| 214 | <p>The·following·matches·<code·class="inline">Pattern</code>·against·<code·class="inline">Expr</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Pattern</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Expr</span></code></pre><p>If·the·matching·succeeds,·any·unbound·variable·in·the·pattern·becomes·bound·and | 214 | <p>The·following·matches·<code·class="inline">Pattern</code>·against·<code·class="inline">Expr</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Pattern</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Expr</span></code></pre><p>If·the·matching·succeeds,·any·unbound·variable·in·the·pattern·becomes·bound·and |
| 215 | the·value·of·<code·class="inline">Expr</code>·is·returned.</p><p>If·multiple·match·operators·are·applied·in·sequence,·they·will·be·evaluated·from | 215 | the·value·of·<code·class="inline">Expr</code>·is·returned.</p><p>If·multiple·match·operators·are·applied·in·sequence,·they·will·be·evaluated·from |
| 216 | right·to·left.</p><p>If·the·matching·fails,·a·<code·class="inline">badmatch</code>·run-time·error·occurs.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="p"·data-group-id=" | 216 | right·to·left.</p><p>If·the·matching·fails,·a·<code·class="inline">badmatch</code>·run-time·error·occurs.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="p"·data-group-id="5821984100-1">{</span><span·class="n">A</span><span·class="p">,</span><span·class="w">·</span><span·class="n">B</span><span·class="p"·data-group-id="5821984100-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="[·...·truncated·by·diffoscope;·len:·281,·SHA:·e09f3cf436a19b58badba0e52265ebf5a9e271fd280f427b22e34c170ced330a·...·]-2">}</span><span·class="p">.</span><span·class="w"> |
| 217 | </span><span·class="p"·data-group-id=" | 217 | </span><span·class="p"·data-group-id="5821984100-3">{</span><span·class="ss">answer</span><span·class="p">,</span><span·class="mi">42</span><span·class="p"·data-group-id="5821984100-3">}</span><span·class="gp·unselectable"> |
| 218 | 2>·</span><span·class="n">A</span><span·class="p">.</span><span·class="w"> | 218 | 2>·</span><span·class="n">A</span><span·class="p">.</span><span·class="w"> |
| 219 | </span><span·class="ss">answer</span><span·class="gp·unselectable"> | 219 | </span><span·class="ss">answer</span><span·class="gp·unselectable"> |
| 220 | 3>·</span><span·class="n">B</span><span·class="p">.</span><span·class="w"> | 220 | 3>·</span><span·class="n">B</span><span·class="p">.</span><span·class="w"> |
| 221 | </span><span·class="mi">42</span><span·class="gp·unselectable"> | 221 | </span><span·class="mi">42</span><span·class="gp·unselectable"> |
| 222 | 4>·</span><span·class="n">T</span><span·class="p">.</span><span·class="w"> | 222 | 4>·</span><span·class="n">T</span><span·class="p">.</span><span·class="w"> |
| 223 | </span><span·class="p"·data-group-id=" | 223 | </span><span·class="p"·data-group-id="5821984100-4">{</span><span·class="ss">answer</span><span·class="p">,</span><span·class="mi">42</span><span·class="p"·data-group-id="5821984100-4">}</span><span·class="gp·unselectable"> |
| 224 | 5>·</span><span·class="p"·data-group-id=" | 224 | 5>·</span><span·class="p"·data-group-id="5821984100-5">{</span><span·class="n">C</span><span·class="p">,</span><span·class="w">·</span><span·class="n">D</span><span·class="p"·data-group-id="5821984100-5">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="[·...·truncated·by·diffoscope;·len:·179,·SHA:·3d273f2a12070f5f7dfd9c44849b467c8325ba37c02192f1f8f4f9c3ead7d0f7·...·]-6">]</span><span·class="p">.</span><span·class="w"> |
| 225 | </span><span·class="gt">**·exception·error:·no·match·of·right-hand·side·value·[1,2]</span></code></pre><p>Because·multiple·match·operators·are·evaluated·from·right·to·left,·it·means | 225 | </span><span·class="gt">**·exception·error:·no·match·of·right-hand·side·value·[1,2]</span></code></pre><p>Because·multiple·match·operators·are·evaluated·from·right·to·left,·it·means |
| 226 | that:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Pattern1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Pattern2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p">.</span><span·class="w">·</span><span·class="p">.</span><span·class="w">·</span><span·class="p">.</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">PatternN</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Expression</span></code></pre><p>is·equivalent·to:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Temporary</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Expression</span><span·class="p">,</span><span·class="w"> | 226 | that:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Pattern1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Pattern2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p">.</span><span·class="w">·</span><span·class="p">.</span><span·class="w">·</span><span·class="p">.</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">PatternN</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Expression</span></code></pre><p>is·equivalent·to:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Temporary</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Expression</span><span·class="p">,</span><span·class="w"> |
| 227 | </span><span·class="n">PatternN</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Temporary</span><span·class="p">,</span><span·class="w"> | 227 | </span><span·class="n">PatternN</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Temporary</span><span·class="p">,</span><span·class="w"> |
| 228 | ···</span><span·class="p">.</span><span·class="w"> | 228 | ···</span><span·class="p">.</span><span·class="w"> |
| 229 | ···</span><span·class="p">.</span><span·class="w"> | 229 | ···</span><span·class="p">.</span><span·class="w"> |
| 230 | ···</span><span·class="p">.</span><span·class="p">,</span><span·class="w"> | 230 | ···</span><span·class="p">.</span><span·class="p">,</span><span·class="w"> |
| 231 | </span><span·class="n">Pattern2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Temporary</span><span·class="p">,</span><span·class="w"> | 231 | </span><span·class="n">Pattern2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Temporary</span><span·class="p">,</span><span·class="w"> |
| Offset 239, 30 lines modified | Offset 239, 30 lines modified | ||
| 239 | can·safely·be·skipped·on·a·first·reading.</p></section><p>The·<code·class="inline">=</code>·character·is·used·to·denote·two·similar·but·distinct·operators:·the | 239 | can·safely·be·skipped·on·a·first·reading.</p></section><p>The·<code·class="inline">=</code>·character·is·used·to·denote·two·similar·but·distinct·operators:·the |
| 240 | match·operator·and·the·compound·pattern·operator.·Which·one·is·meant·is | 240 | match·operator·and·the·compound·pattern·operator.·Which·one·is·meant·is |
| 241 | determined·by·context.</p><p>The·<em>compound·pattern·operator</em>·is·used·to·construct·a·compound·pattern·from·two | 241 | determined·by·context.</p><p>The·<em>compound·pattern·operator</em>·is·used·to·construct·a·compound·pattern·from·two |
| 242 | patterns.·Compound·patterns·are·accepted·everywhere·a·pattern·is·accepted.·A | 242 | patterns.·Compound·patterns·are·accepted·everywhere·a·pattern·is·accepted.·A |
| 243 | compound·pattern·matches·if·all·of·its·constituent·patterns·match.·It·is·not | 243 | compound·pattern·matches·if·all·of·its·constituent·patterns·match.·It·is·not |
| 244 | legal·for·a·pattern·that·is·part·of·a·compound·pattern·to·use·variables·(as·keys | 244 | legal·for·a·pattern·that·is·part·of·a·compound·pattern·to·use·variables·(as·keys |
| 245 | in·map·patterns·or·sizes·in·binary·patterns)·bound·in·other·sub·patterns·of·the | 245 | in·map·patterns·or·sizes·in·binary·patterns)·bound·in·other·sub·patterns·of·the |
| 246 | same·compound·pattern.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 246 | same·compound·pattern.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nf">fun</span><span·class="p"·data-group-id="7748003187-1">(</span><span·class="p"·data-group-id="7748003187-2">#{</span><span·class="n">Key</span><span·class="w">·</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">Value</span><span·class="p"·data-group-id="7748003187-2">}</span>[·...·truncated·by·diffoscope;·len:·346,·SHA:·d6d583d2649e83f00971d0cfa74b40c5e7d873f79e884370ab69af4d19f6dd3e·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Value</span><span·class="w">·</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 247 | </span><span·class="gt">*·1:7:·variable·'Key'·is·unbound</span><span·class="gp·unselectable"> | 247 | </span><span·class="gt">*·1:7:·variable·'Key'·is·unbound</span><span·class="gp·unselectable"> |
| 248 | 2>·</span><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 248 | 2>·</span><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="7748003187-4">(</span><span·class="p"·data-group-id="7748003187-5">{</span><span·class="n">A</span><span·class="p">,</span><span·class="w">·</span><span·class="n">B</span><span·class="p"·data-group-id="7748003187-5">}</span><span·class="w">·</span><span·cl[·...·truncated·by·diffoscope;·len:·887,·SHA:·c602c472e14b5c778764d6e27a31fe8d9ad68c0532b8e3eff6b4c999565a2922·...·]-7">)</span><span·class="p">.</span><span·class="w"> |
| 249 | </span><span·class="p"·data-group-id=" | 249 | </span><span·class="p"·data-group-id="7748003187-9">{</span><span·class="p"·data-group-id="7748003187-10">{</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="7748003187-10">}</span><span·class="p">,</span><span·class="mi">3</span><sp[·...·truncated·by·diffoscope;·len:·38,·SHA:·c9d7bccb66c0d05824947dba8563a1d9eb67b2c6f4f3a5be6f8dbfef4cd72606·...·]-9">}</span><span·class="gp·unselectable"> |
| 250 | 3>·</span><span·class="n">G</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 250 | 3>·</span><span·class="n">G</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="7748003187-11">(</span><span·class="p"·data-group-id="7748003187-12"><<</span><span·class="n">A</span><span·class="p">:</span><span·class="mi">8</span><span·class="p">,</span><span·class="n">B</span><span·class="p">:</span><span·class="mi">8</span><s[·...·truncated·by·diffoscope;·len:·1148,·SHA:·a3834a65803c314c9c2458e9a2aef6e4b152bc0a13d0333f6793b1269127b1f9·...·]-15">)</span><span·class="p">.</span><span·class="w"> |
| 251 | </span><span·class="p"·data-group-id=" | 251 | </span><span·class="p"·data-group-id="7748003187-17">{</span><span·class="mi">42</span><span·class="p">,</span><span·class="mi">43</span><span·class="p">,</span><span·class="mi">10795</span><span·class="p"·data-group-id="7748003187-17">}</span></code></pre><p>The·<em>match·operator</em>·is·allowed·everywhere·an·expression·is·allowed.·It·is·used |
| 252 | to·match·the·value·of·an·expression·to·a·pattern.·If·multiple·match·operators | 252 | to·match·the·value·of·an·expression·to·a·pattern.·If·multiple·match·operators |
| 253 | are·applied·in·sequence,·they·will·be·evaluated·from·right·to·left.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">M</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="8 | 253 | are·applied·in·sequence,·they·will·be·evaluated·from·right·to·left.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">M</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="8689565715-1">#{</span><span·class="ss">key</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">key2</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">key2</span><span·class="w">·</span><sp[·...·truncated·by·diffoscope;·len:·119,·SHA:·13400de4a528cfb75c3f58ac7ed8b588e5b74d3bec6dda11abf19f182ab66274·...·]-1">}</span><span·class="p">.</span><span·class="w"> |
| 254 | </span><span·class="p"·data-group-id="8 | 254 | </span><span·class="p"·data-group-id="8689565715-2">#{</span><span·class="ss">key</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">key2</span><span·class="p">,</span><span·class="ss">key2</span><span·class="w">·</span><span·class="p">=></span[·...·truncated·by·diffoscope;·len:·95,·SHA:·edf9466788e38f782a032379579677f555a55c70682109fe4baf789f6174daac·...·]-2">}</span><span·class="gp·unselectable"> |
| 255 | 2>·</span><span·class="nf">f</span><span·class="p"·data-group-id="8 | 255 | 2>·</span><span·class="nf">f</span><span·class="p"·data-group-id="8689565715-3">(</span><span·class="n">Key</span><span·class="p"·data-group-id="8689565715-3">)</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8689565715-4">#{</span><span·class="n">Key</span><span·class="w">·</span><spa[·...·truncated·by·diffoscope;·len:·419,·SHA:·3f439f36852e38c3357bfd18e0efa741a8bfd232c796aa883d6ca1c06a0bb29c·...·]-5">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">M</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Value</span><span·class="p">.</span><span·class="w"> |
| 256 | </span><span·class="ss">value</span><span·class="gp·unselectable"> | 256 | </span><span·class="ss">value</span><span·class="gp·unselectable"> |
| 257 | 3>·</span><span·class="nf">f</span><span·class="p"·data-group-id="8 | 257 | 3>·</span><span·class="nf">f</span><span·class="p"·data-group-id="8689565715-6">(</span><span·class="n">Key</span><span·class="p"·data-group-id="8689565715-6">)</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8689565715-7">#{</span><span·class="n">Key</span><span·class="w">·</span><spa[·...·truncated·by·diffoscope;·len:·621,·SHA:·cd5c1a3c8d761ccd806e597cc8cbd275cef6399cd2f7fb7b564764a546acc510·...·]-8">)</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Value</span><span·class="p">.</span><span·class="w"> |
| 258 | </span><span·class="ss">value</span><span·class="gp·unselectable"> | 258 | </span><span·class="ss">value</span><span·class="gp·unselectable"> |
| 259 | 4>·</span><span·class="nf">f</span><span·class="p"·data-group-id="8 | 259 | 4>·</span><span·class="nf">f</span><span·class="p"·data-group-id="8689565715-10">(</span><span·class="n">Key</span><span·class="p"·data-group-id="8689565715-10">)</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8689565715-11">(</span><span·class="p"·data-group-id="8689565715-12">#{</sp[·...·truncated·by·diffoscope;·len:·532,·SHA:·76cd649c750f5b2bfd934f753c6a456ca889dd8d2ace22ca2257cb264d99ce5c·...·]-11">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">M</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Value</span><span·class="p">.</span><span·class="w"> |
| 260 | </span><span·class="gt">*·1:12:·variable·'Key'·is·unbound</span><span·class="gp·unselectable"> | 260 | </span><span·class="gt">*·1:12:·variable·'Key'·is·unbound</span><span·class="gp·unselectable"> |
| 261 | 5>·</span><span·class="p"·data-group-id="8 | 261 | 5>·</span><span·class="p"·data-group-id="8689565715-14"><<</span><span·class="n">X</span><span·class="p">:</span><span·class="n">Y</span><span·class="p"·data-group-id="8689565715-14">>></span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="k">begin<[·...·truncated·by·diffoscope;·len:·376,·SHA:·a5e5054fb07f0e4ec7ee04f3f067957f9c165cb9c622bccb9dffdbea3dfdef90·...·]-15">>></span><span·class="w">·</span><span·class="k">end</span><span·class="p">,</span><span·class="w">·</span><span·class="n">X</span><span·class="p">.</span><span·class="w"> |
| 262 | </span><span·class="mi">42</span></code></pre><p>The·expression·at·prompt·<code·class="inline">2></code>·first·matches·the·value·of·variable·<code·class="inline">M</code>·against | 262 | </span><span·class="mi">42</span></code></pre><p>The·expression·at·prompt·<code·class="inline">2></code>·first·matches·the·value·of·variable·<code·class="inline">M</code>·against |
| 263 | pattern·<code·class="inline">#{key·:=·Key}</code>,·binding·variable·<code·class="inline">Key</code>.·It·then·matches·the·value·of | 263 | pattern·<code·class="inline">#{key·:=·Key}</code>,·binding·variable·<code·class="inline">Key</code>.·It·then·matches·the·value·of |
| 264 | <code·class="inline">M</code>·against·pattern·<code·class="inline">#{Key·:=·Value}</code>·using·variable·<code·class="inline">Key</code>·as·the·key,·binding | 264 | <code·class="inline">M</code>·against·pattern·<code·class="inline">#{Key·:=·Value}</code>·using·variable·<code·class="inline">Key</code>·as·the·key,·binding |
| 265 | variable·<code·class="inline">Value</code>.</p><p>The·expression·at·prompt·<code·class="inline">3></code>·matches·expression·<code·class="inline">(#{key·:=·Key}·=·M)</code>·against | 265 | variable·<code·class="inline">Value</code>.</p><p>The·expression·at·prompt·<code·class="inline">3></code>·matches·expression·<code·class="inline">(#{key·:=·Key}·=·M)</code>·against |
| 266 | pattern·<code·class="inline">#{Key·:=·Value}</code>.·The·expression·inside·the·parentheses·is·evaluated | 266 | pattern·<code·class="inline">#{Key·:=·Value}</code>.·The·expression·inside·the·parentheses·is·evaluated |
| 267 | first.·That·is,·<code·class="inline">M</code>·is·matched·against·<code·class="inline">#{key·:=·Key}</code>,·and·then·the·value·of | 267 | first.·That·is,·<code·class="inline">M</code>·is·matched·against·<code·class="inline">#{key·:=·Key}</code>,·and·then·the·value·of |
| 268 | <code·class="inline">M</code>·is·matched·against·pattern·<code·class="inline">#{Key·:=·Value}</code>.·That·is·the·same·evaluation | 268 | <code·class="inline">M</code>·is·matched·against·pattern·<code·class="inline">#{Key·:=·Value}</code>.·That·is·the·same·evaluation |
| Offset 276, 30 lines modified | Offset 276, 30 lines modified | ||
| 276 | binding·variable·<code·class="inline">Y</code>·and·creating·a·binary.·The·binary·is·then·matched·against | 276 | binding·variable·<code·class="inline">Y</code>·and·creating·a·binary.·The·binary·is·then·matched·against |
| 277 | pattern·<code·class="inline"><<X:Y>></code>·using·the·value·of·<code·class="inline">Y</code>·as·the·size·of·the·segment.</p><h2·id="function-calls"·class="section-heading"> | 277 | pattern·<code·class="inline"><<X:Y>></code>·using·the·value·of·<code·class="inline">Y</code>·as·the·size·of·the·segment.</p><h2·id="function-calls"·class="section-heading"> |
| 278 | ··<a·href="#function-calls"·class="hover-link"> | 278 | ··<a·href="#function-calls"·class="hover-link"> |
| 279 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 279 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 280 | ··</a> | 280 | ··</a> |
| 281 | ··<span·class="text">Function·Calls</span> | 281 | ··<span·class="text">Function·Calls</span> |
| 282 | </h2> | 282 | </h2> |
| 283 | <pre><code·class="makeup·erlang"·translate="no"><span·class="n">ExprF</span><span·class="p"·data-group-id=" | 283 | <pre><code·class="makeup·erlang"·translate="no"><span·class="n">ExprF</span><span·class="p"·data-group-id="4524846496-1">(</span><span·class="n">Expr1</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">,</span><span·class="n">ExprN</span><span·class="p"·data-group-id="4524846496-1">)</span><span·class="w"> |
| 284 | </span><span·class="n">ExprM</span><span·class="p">:</span><span·class="n">ExprF</span><span·class="p"·data-group-id=" | 284 | </span><span·class="n">ExprM</span><span·class="p">:</span><span·class="n">ExprF</span><span·class="p"·data-group-id="4524846496-2">(</span><span·class="n">Expr1</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">,</span><span·class="n">ExprN</span><span·class="p"·data-group-id="4524846496-2">)</span></code></pre><p>In·the·first·form·of·function·calls,·<code·class="inline">ExprM:ExprF(Expr1,...,ExprN)</code>,·each·of |
| 285 | <code·class="inline">ExprM</code>·and·<code·class="inline">ExprF</code>·must·be·an·atom·or·an·expression·that·evaluates·to·an·atom. | 285 | <code·class="inline">ExprM</code>·and·<code·class="inline">ExprF</code>·must·be·an·atom·or·an·expression·that·evaluates·to·an·atom. |
| 286 | The·function·is·said·to·be·called·by·using·the·<em>fully·qualified·function·name</em>. | 286 | The·function·is·said·to·be·called·by·using·the·<em>fully·qualified·function·name</em>. |
| 287 | This·is·often·referred·to·as·a·<em>remote</em>·or·<em>external·function·call</em>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">keyfind</span><span·class="p"·data-group-id=" | 287 | This·is·often·referred·to·as·a·<em>remote</em>·or·<em>external·function·call</em>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">keyfind</span><span·class="p"·data-group-id="1091892483-1">(</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">List</span><span·class="p"·data-group-id="1091892483-1">)</span></code></pre><p>In·the·second·form·of·function·calls,·<code·class="inline">ExprF(Expr1,...,ExprN)</code>,·<code·class="inline">ExprF</code>·must·be |
| 288 | an·atom·or·evaluate·to·a·fun.</p><p>If·<code·class="inline">ExprF</code>·is·an·atom,·the·function·is·said·to·be·called·by·using·the | 288 | an·atom·or·evaluate·to·a·fun.</p><p>If·<code·class="inline">ExprF</code>·is·an·atom,·the·function·is·said·to·be·called·by·using·the |
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| 117 | <h2·id="map"·class="section-heading"> | 117 | <h2·id="map"·class="section-heading"> |
| 118 | ··<a·href="#map"·class="hover-link"> | 118 | ··<a·href="#map"·class="hover-link"> |
| 119 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 119 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 120 | ··</a> | 120 | ··</a> |
| 121 | ··<span·class="text">map</span> | 121 | ··<span·class="text">map</span> |
| 122 | </h2> | 122 | </h2> |
| 123 | <p>The·following·function,·<code·class="inline">double</code>,·doubles·every·element·in·a·list:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">double</span><span·class="p"·data-group-id="5285306881-1">(</span><span·class="p"·data-group-id="5285306881-2">[</span><span·class="n">H</span><span·class="p">|</span><span·class="n">T</span><span·class="p"·data-group-id="5285306881-2">]</span><span·class="p"·data-group-id="5285306881-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="5285306881-3">[</span><span·class="mi">2</span><span·class="o">*</span><span·class="n">H</span><span·class="p">|</span><span·class="nf">double</span><span·class="p"·data-group-id="5285306881-4">(</span><span·class="n">T</span><span·class="p"·data-group-id="5285306881-4">)</span><span·class="p"·data-group-id="5285306881-3">]</span><span·class="p">;</span><span·class="w"> | ||
| 124 | </span><span·class="nf">double</span><span·class="p"·data-group-id="5285306881-5">(</span><span·class="p"·data-group-id="5285306881-6">[</span><span·class="p"·data-group-id="5285306881-6">]</span><span·class="p"·data-group-id="5285306881-5">)</span><span·class="w">····</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="5285306881-7">[</span><span·class="p"·data-group-id="5285306881-7">]</span><span·class="p">.</span></code></pre><p>Hence,·the·argument·entered·as·input·is·doubled·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nf">double</span><span·class="p"·data-group-id="3376745776-1">(</span><span·class="p"·data-group-id="3376745776-2">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">4</span><span·class="p"·data-group-id="3376745776-2">]</span><span·class="p"·data-group-id="3376745776-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 125 | </span><span·class="p"·data-group-id="3376745776-3">[</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">8</span><span·class="p"·data-group-id="3376745776-3">]</span></code></pre><p>The·following·function,·<code·class="inline">add_one</code>,·adds·one·to·every·element·in·a·list:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">add_one</span><span·class="p"·data-group-id="7211985212-1">(</span><span·class="p"·data-group-id="7211985212-2">[</span><span·class="n">H</span><span·class="p">|</span><span·class="n">T</span><span·class="p"·data-group-id="7211985212-2">]</span><span·class="p"·data-group-id="7211985212-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="7211985212-3">[</span><span·class="n">H</span><span·class="o">+</span><span·class="mi">1</span><span·class="p">|</span><span·class="nf">add_one</span><span·class="p"·data-group-id="7211985212-4">(</span><span·class="n">T</span><span·class="p"·data-group-id="7211985212-4">)</span><span·class="p"·data-group-id="7211985212-3">]</span><span·class="p">;</span><span·class="w"> | ||
| 126 | < | 123 | <p>The·following·function,·<code·class="inline">double</code>,·doubles·every·element·in·a·list:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">double</span><span·class="p"·data-group-id="5619064060-1">(</span><span·class="p"·data-group-[·...·truncated·by·diffoscope;·len:·683,·SHA:·85e08cba97fef8751ea47a7c8efbcde6c93c3648aa80dc10788bc4e9aa9ebf13·...·] |
| 124 | </span><span·class="nf">double</span><span·class="p"·data-group-id="5619064060-5">(</span><span·class="p"·data-group-id="5619064060-6">[</span><span·class="p"·data-group-id="5619064060-6">]</span><span·class="p"·data-group-id="5619064060-5">)</span><span·class="w">····</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="5619064060-7">[</span><span·class="p"·data-group-id="5619064060-7">]</span><span·class="p">.</span></code></pre><p>Hence,·the·argument·entered·as·input·is·doubled·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nf">double</span><span·class="p"·data-group-id="1477286281-1">(</span><span·class="p"·data-group-id="1477286281-2">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">4</span><span·class="p"·data-group-id="1477286281-2">]</span><span·class="p"·data-group-id="1477286281-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 125 | </span><span·class="p"·data-group-id="1477286281-3">[</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">8</span><span·class="p"·data-group-id="1477286281-3">]</span></code></pre><p>The·following·function,·<code·class="inline">add_one</code>,·adds·one·to·every·element·in·a·list:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">add_one</span><span·class="p"·data-group-id="2400158724-1">(</span><span·class="p"·data-group-id="2400158724-2">[</span><span·class="n">H</span><span·class="p">|</span><span·class="n">T</span><span·class="p"·data-group-id="2400158724-2">]</span><span·class="p"·data-group-id="2400158724-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="2400158724-3">[</span><span·class="n">H</span><span·class="o">+</span><span·class="mi">1</span><span·class="p">|</span><span·class="nf">add_one</span><span·class="p"·data-group-id="2400158724-4">(</span><span·class="n">T</span><span·class="p"·data-group-id="2400158724-4">)</span><span·class="p"·data-group-id="2400158724-3">]</span><span·class="p">;</span><span·class="w"> | ||
| 126 | </span><span·class="nf">add_one</span><span·class="p"·data-group-id="2400158724-5">(</span><span·class="p"·data-group-id="2400158724-6">[</span><span·class="p"·data-group-id="2400158724-6">]</span><span·class="p"·data-group-id="2400158724-5">)</span><span·class="w">····</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="2400158724-7">[</span><span·class="p"·data-group-id="2400158724-7">]</span><span·class="p">.</span></code></pre><p>The·functions·<code·class="inline">double</code>·and·<code·class="inline">add_one</code>·have·a·similar·structure.·This·can·be·used | ||
| 127 | by·writing·a·function·<code·class="inline">map</code>·that·expresses·this·similarity:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">map</span><span·class="p"·data-group-id="9 | 127 | by·writing·a·function·<code·class="inline">map</code>·that·expresses·this·similarity:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">map</span><span·class="p"·data-group-id="9350713639-1">(</span><span·class="n">F</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9350713639-2">[</span><span·class="n">H</span><span·class="p">|</span><span·class="n">T</span><span·class="p"·data-group-id="9350713[·...·truncated·by·diffoscope;·len:·645,·SHA:·2a3cb59138d457096c4a26334592b49418541aec3aac05a35047bde4dd35db02·...·]-3">]</span><span·class="p">;</span><span·class="w"> |
| 128 | </span><span·class="nf">map</span><span·class="p"·data-group-id="9 | 128 | </span><span·class="nf">map</span><span·class="p"·data-group-id="9350713639-6">(</span><span·class="n">F</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9350713639-7">[</span><span·class="p"·data-group-id="9350713639-7">]</span><span·class="p"·data-group-id="9350713639-6">)</span><spa[·...·truncated·by·diffoscope;·len:·169,·SHA:·62ef242cf6c4c8e1dec6386490c0c03ce6560d3a457b84801bbf118debef6630·...·]-8">]</span><span·class="p">.</span></code></pre><p>The·functions·<code·class="inline">double</code>·and·<code·class="inline">add_one</code>·can·now·be·expressed·in·terms·of·<code·class="inline">map</code>·as |
| 129 | follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">double</span><span·class="p"·data-group-id=" | 129 | follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">double</span><span·class="p"·data-group-id="6968840059-1">(</span><span·class="n">L</span><span·class="p"·data-group-id="6968840059-1">)</span><span·class="w">··</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">map</span><span·class="p"·data-group-id="6968840059-2">(</span>[·...·truncated·by·diffoscope;·len:·469,·SHA:·2e5864d591bb60cd642b9416a3e190bbb52117dfb1dd60630f4cb28e331655dc·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 130 | </span><span·class="nf">add_one</span><span·class="p"·data-group-id=" | 130 | </span><span·class="nf">add_one</span><span·class="p"·data-group-id="6968840059-4">(</span><span·class="n">L</span><span·class="p"·data-group-id="6968840059-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">map</span><span·class="p"·data-group-id="6968840059-5">(</span><[·...·truncated·by·diffoscope;·len:·516,·SHA:·b10f6b03d34739837c9ee9df0fc3a9e4dd51936a18547bace3dbec14cb0a3287·...·]-5">)</span><span·class="p">.</span></code></pre><p><code·class="inline">map(F,·List)</code>·is·a·function·that·takes·a·function·<code·class="inline">F</code>·and·a·list·<code·class="inline">L</code>·as |
| 131 | arguments·and·returns·a·new·list,·obtained·by·applying·<code·class="inline">F</code>·to·each·of·the | 131 | arguments·and·returns·a·new·list,·obtained·by·applying·<code·class="inline">F</code>·to·each·of·the |
| 132 | elements·in·<code·class="inline">L</code>.</p><p>The·process·of·abstracting·out·the·common·features·of·a·number·of·different | 132 | elements·in·<code·class="inline">L</code>.</p><p>The·process·of·abstracting·out·the·common·features·of·a·number·of·different |
| 133 | programs·is·called·<em>procedural·abstraction</em>.·Procedural·abstraction·can·be·used | 133 | programs·is·called·<em>procedural·abstraction</em>.·Procedural·abstraction·can·be·used |
| 134 | to·write·several·different·functions·that·have·a·similar·structure,·but·differ | 134 | to·write·several·different·functions·that·have·a·similar·structure,·but·differ |
| 135 | in·some·minor·detail.·This·is·done·as·follows:</p><ol><li><em>Step·1.</em>·Write·one·function·that·represents·the·common·features·of·these | 135 | in·some·minor·detail.·This·is·done·as·follows:</p><ol><li><em>Step·1.</em>·Write·one·function·that·represents·the·common·features·of·these |
| 136 | functions.</li><li><em>Step·2.</em>·Parameterize·the·difference·in·terms·of·functions·that·are·passed | 136 | functions.</li><li><em>Step·2.</em>·Parameterize·the·difference·in·terms·of·functions·that·are·passed |
| 137 | as·arguments·to·the·common·function.</li></ol><h2·id="foreach"·class="section-heading"> | 137 | as·arguments·to·the·common·function.</li></ol><h2·id="foreach"·class="section-heading"> |
| 138 | ··<a·href="#foreach"·class="hover-link"> | 138 | ··<a·href="#foreach"·class="hover-link"> |
| 139 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 139 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 140 | ··</a> | 140 | ··</a> |
| 141 | ··<span·class="text">foreach</span> | 141 | ··<span·class="text">foreach</span> |
| 142 | </h2> | 142 | </h2> |
| 143 | <p>This·section·illustrates·procedural·abstraction.·Initially,·the·following·two | 143 | <p>This·section·illustrates·procedural·abstraction.·Initially,·the·following·two |
| 144 | examples·are·written·as·conventional·functions.</p><p>This·function·prints·all·elements·of·a·list·onto·a·stream:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">print_list</span><span·class="p"·data-group-id=" | 144 | examples·are·written·as·conventional·functions.</p><p>This·function·prints·all·elements·of·a·list·onto·a·stream:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">print_list</span><span·class="p"·data-group-id="3566672981-1">(</span><span·class="n">Stream</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3566672981-2">[</span><span·class="n">H</span><span·class="p">|</span><span·class="n">T</span><span·class="p"·data-group-id="3[·...·truncated·by·diffoscope;·len:·62,·SHA:·ca0108cbe4eff65fc16029a71498bb31922414622a37a908b5e33834f5329d62·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 145 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 145 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="3566672981-3">(</span><span·class="n">Stream</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"</span><span·class="si">~p</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span[·...·truncated·by·diffoscope;·len:·172,·SHA:·1d0d1d0cb65dfaea7ee20bbd2dc617e5603dc982437dba8823bf550571932704·...·]-3">)</span><span·class="p">,</span><span·class="w"> |
| 146 | ····</span><span·class="nf">print_list</span><span·class="p"·data-group-id=" | 146 | ····</span><span·class="nf">print_list</span><span·class="p"·data-group-id="3566672981-5">(</span><span·class="n">Stream</span><span·class="p">,</span><span·class="w">·</span><span·class="n">T</span><span·class="p"·data-group-id="3566672981-5">)</span><span·class="p">;</span><span·class="w"> |
| 147 | </span><span·class="nf">print_list</span><span·class="p"·data-group-id=" | 147 | </span><span·class="nf">print_list</span><span·class="p"·data-group-id="3566672981-6">(</span><span·class="n">Stream</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3566672981-7">[</span><span·class="p"·data-group-id="3566672981-7">]</span><span·class="p"·data-group-id="3566672981-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 148 | ····</span><span·class="ss">true</span><span·class="p">.</span></code></pre><p>This·function·broadcasts·a·message·to·a·list·of·processes:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">broadcast</span><span·class="p"·data-group-id=" | 148 | ····</span><span·class="ss">true</span><span·class="p">.</span></code></pre><p>This·function·broadcasts·a·message·to·a·list·of·processes:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">broadcast</span><span·class="p"·data-group-id="3245763863-1">(</span><span·class="n">Msg</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3245763863-2">[</span><span·class="n">Pid</span><span·class="p">|</span><span·class="n">Pids</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·64,·SHA:·953eb9b600f70958873c285486041cd90a6129536111dc6664356d0b8f0a2383·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 149 | ····</span><span·class="n">Pid</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p">,</span><span·class="w"> | 149 | ····</span><span·class="n">Pid</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p">,</span><span·class="w"> |
| 150 | ····</span><span·class="nf">broadcast</span><span·class="p"·data-group-id=" | 150 | ····</span><span·class="nf">broadcast</span><span·class="p"·data-group-id="3245763863-3">(</span><span·class="n">Msg</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pids</span><span·class="p"·data-group-id="3245763863-3">)</span><span·class="p">;</span><span·class="w"> |
| 151 | </span><span·class="nf">broadcast</span><span·class="p"·data-group-id=" | 151 | </span><span·class="nf">broadcast</span><span·class="p"·data-group-id="3245763863-4">(</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3245763863-5">[</span><span·class="p"·data-group-id="3245763863-5">]</span><span·class="p"·data-group-id="3245763863-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 152 | ····</span><span·class="ss">true</span><span·class="p">.</span></code></pre><p>These·two·functions·have·a·similar·structure.·They·both·iterate·over·a·list·and | 152 | ····</span><span·class="ss">true</span><span·class="p">.</span></code></pre><p>These·two·functions·have·a·similar·structure.·They·both·iterate·over·a·list·and |
| 153 | do·something·to·each·element·in·the·list.·The·"something"·is·passed·on·as·an | 153 | do·something·to·each·element·in·the·list.·The·"something"·is·passed·on·as·an |
| 154 | extra·argument·to·the·function·that·does·this.</p><p>The·function·<code·class="inline">foreach</code>·expresses·this·similarity:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">foreach</span><span·class="p"·data-group-id=" | 154 | extra·argument·to·the·function·that·does·this.</p><p>The·function·<code·class="inline">foreach</code>·expresses·this·similarity:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">foreach</span><span·class="p"·data-group-id="4329134346-1">(</span><span·class="n">F</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4329134346-2">[</span><span·class="n">H</span><span·class="p">|</span><span·class="n">T</span><span·class="p"·data-group-id="432913[·...·truncated·by·diffoscope;·len:·57,·SHA:·c4d4cab3c0ce0c782a8464aa4aa638aedc939dade2aecd86d1656e1851cbf702·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 155 | ····</span><span·class="n">F</span><span·class="p"·data-group-id=" | 155 | ····</span><span·class="n">F</span><span·class="p"·data-group-id="4329134346-3">(</span><span·class="n">H</span><span·class="p"·data-group-id="4329134346-3">)</span><span·class="p">,</span><span·class="w"> |
| 156 | ····</span><span·class="nf">foreach</span><span·class="p"·data-group-id=" | 156 | ····</span><span·class="nf">foreach</span><span·class="p"·data-group-id="4329134346-4">(</span><span·class="n">F</span><span·class="p">,</span><span·class="w">·</span><span·class="n">T</span><span·class="p"·data-group-id="4329134346-4">)</span><span·class="p">;</span><span·class="w"> |
| 157 | </span><span·class="nf">foreach</span><span·class="p"·data-group-id="5618700972-5">(</span><span·class="n">F</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5618700972-6">[</span><span·class="p"·data-group-id="5618700972-6">]</span><span·class="p"·data-group-id="5618700972-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | ||
| 158 | 157 | </span><span·class="nf">foreach</span><span·class="p"·data-group-id="4329134346-5">(</span><span·class="n">F</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4329134346-6">[</span><span·class="p"·data-group-id="432913434[·...·truncated·by·diffoscope;·len:·133,·SHA:·345d1a9c1cac7a656d07ea337d048a511aaa267ae61807fbb6e693b443be90d7·...·]> | |
| 158 | ····</span><span·class="ss">ok</span><span·class="p">.</span></code></pre><p>Using·the·function·<code·class="inline">foreach</code>,·the·function·<code·class="inline">print_list</code>·becomes:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">foreach</span><span·class="p"·data-group-id="6208436962-1">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="6208436962-2">(</span><span·class="n">H</span><span·class="p"·data-group-id="6208436962-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="6208436962-3">(</span><span·class="n">S</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"</span><span·class="si">~p</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="p"·data-group-id="6208436962-4">[</span><span·class="n">H</span><span·class="p"·data-group-id="6208436962-4">]</span><span·class="p"·data-group-id="6208436962-3">)</span><span·class="w">·</span><span·class="k">end</span><span·class="p">,</span><span·class="w">·</span><span·class="n">L</span><span·class="p"·data-group-id="6208436962-1">)</span></code></pre><p>Using·the·function·<code·class="inline">foreach</code>,·the·function·<code·class="inline">broadcast</code>·becomes:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">foreach</span><span·class="p"·data-group-id="1443205864-1">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="1443205864-2">(</span><span·class="n">Pid</span><span·class="p"·data-group-id="1443205864-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Pid</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="n">M</span><span·class="w">·</span><span·class="k">end</span><span·class="p">,</span><span·class="w">·</span><span·class="n">L</span><span·class="p"·data-group-id="1443205864-1">)</span></code></pre><p><code·class="inline">foreach</code>·is·evaluated·for·its·side-effect·and·not·its·value.·<code·class="inline">foreach(Fun·,L)</code> | ||
| 159 | calls·<code·class="inline">Fun(X)</code>·for·each·element·<code·class="inline">X</code>·in·<code·class="inline">L</code>·and·the·processing·occurs·in·the | 159 | calls·<code·class="inline">Fun(X)</code>·for·each·element·<code·class="inline">X</code>·in·<code·class="inline">L</code>·and·the·processing·occurs·in·the |
| 160 | order·that·the·elements·were·defined·in·<code·class="inline">L</code>.·<code·class="inline">map</code>·does·not·define·the·order·in | 160 | order·that·the·elements·were·defined·in·<code·class="inline">L</code>.·<code·class="inline">map</code>·does·not·define·the·order·in |
| 161 | which·its·elements·are·processed.</p><h2·id="syntax-of-funs"·class="section-heading"> | 161 | which·its·elements·are·processed.</p><h2·id="syntax-of-funs"·class="section-heading"> |
| 162 | ··<a·href="#syntax-of-funs"·class="hover-link"> | 162 | ··<a·href="#syntax-of-funs"·class="hover-link"> |
| 163 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 163 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 164 | ··</a> | 164 | ··</a> |
| 165 | ··<span·class="text">Syntax·of·Funs</span> | 165 | ··<span·class="text">Syntax·of·Funs</span> |
| 166 | </h2> | 166 | </h2> |
| 167 | <p>Funs·are·written·with·the·following·syntax·(see | 167 | <p>Funs·are·written·with·the·following·syntax·(see |
| 168 | <a·href="../../doc/system/expressions.html#fun-expressions">Fun·Expressions·</a>for·full·description):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id=" | 168 | <a·href="../../doc/system/expressions.html#fun-expressions">Fun·Expressions·</a>for·full·description):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="5648920283-1">(</span><span·class="n">Arg1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Arg2</span><span·class="p">,</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class=[·...·truncated·by·diffoscope;·len:·80,·SHA:·6e2f952f55d0af0c633053faf266ee27dc924abb3e25b8c72c964e990ef0dd20·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 169 | ········</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 169 | ········</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 170 | ····</span><span·class="k">end</span></code></pre><p>This·creates·an·anonymous·function·of·<code·class="inline">N</code>·arguments·and·binds·it·to·the·variable | 170 | ····</span><span·class="k">end</span></code></pre><p>This·creates·an·anonymous·function·of·<code·class="inline">N</code>·arguments·and·binds·it·to·the·variable |
| 171 | <code·class="inline">F</code>.</p><p>Another·function,·<code·class="inline">FunctionName</code>,·written·in·the·same·module,·can·be·passed·as | 171 | <code·class="inline">F</code>.</p><p>Another·function,·<code·class="inline">FunctionName</code>,·written·in·the·same·module,·can·be·passed·as |
| 172 | an·argument,·using·the·following·syntax:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="n">FunctionName</span><span·class="o">/</span><span·class="n">Arity</span></code></pre><p>With·this·form·of·function·reference,·the·function·that·is·referred·to·does·not | 172 | an·argument,·using·the·following·syntax:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="n">FunctionName</span><span·class="o">/</span><span·class="n">Arity</span></code></pre><p>With·this·form·of·function·reference,·the·function·that·is·referred·to·does·not |
| 173 | need·to·be·exported·from·the·module.</p><p>It·is·also·possible·to·refer·to·a·function·defined·in·a·different·module,·with | 173 | need·to·be·exported·from·the·module.</p><p>It·is·also·possible·to·refer·to·a·function·defined·in·a·different·module,·with |
| 174 | the·following·syntax:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="n">Module</span><span·class="p">:</span><span·class="n">FunctionName</span><span·class="o">/</span><span·class="n">Arity</span></code></pre><p>In·this·case,·the·function·must·be·exported·from·the·module·in·question.</p><p>The·following·program·illustrates·the·different·ways·of·creating·funs:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 174 | the·following·syntax:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="n">Module</span><span·class="p">:</span><span·class="n">FunctionName</span><span·class="o">/</span><span·class="n">Arity</span></code></pre><p>In·this·case,·the·function·must·be·exported·from·the·module·in·question.</p><p>The·following·program·illustrates·the·different·ways·of·creating·funs:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="6680398878-1">(</span><span·class="ss">fun_test</span><span·class="p"·data-group-id="6680398878-1">)</span><span·class="p">.</span><span·class="w"> |
| 175 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 175 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="6680398878-2">(</span><span·class="p"·data-group-id="6680398878-3">[</span><span·class="ss">t1</span><span·class="p">/</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">t2</span><span·class="p">/</span><span·cl[·...·truncated·by·diffoscope;·len:·111,·SHA:·ad8d9103ff1500305edc8e109f2e630d316e845e1a27150e46f256841bc0bcb1·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 176 | </span><span·class="p">-</span><span·class="na">import</span><span·class="p"·data-group-id=" | 176 | </span><span·class="p">-</span><span·class="na">import</span><span·class="p"·data-group-id="6680398878-4">(</span><span·class="ss">lists</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6680398878-5">[</span><span·class="ss">map</span><span·class="p">/</span><span·class="mi">2</span><span·class="p"·data-group-i[·...·truncated·by·diffoscope;·len:·66,·SHA:·ac495b576f7dd88c8a843f54886c8494eae31e1bb57499811ce22f2b92d02fe0·...·]-4">)</span><span·class="p">.</span><span·class="w"> |
| 177 | </span><span·class="nf">t1</span><span·class="p"·data-group-id=" | 177 | </span><span·class="nf">t1</span><span·class="p"·data-group-id="6680398878-6">(</span><span·class="p"·data-group-id="6680398878-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">map</span><span·class="p"·data-group-id="6680398878-7">(</span><span·class="nf">fun</spa[·...·truncated·by·diffoscope;·len:·795,·SHA:·29aba93cce522f7b1351ab4874f3c6432ccba76285d99e4e271550b1b33d1a9b·...·]-7">)</span><span·class="p">.</span><span·class="w"> |
| 178 | </span><span·class="nf">t2</span><span·class="p"·data-group-id=" | 178 | </span><span·class="nf">t2</span><span·class="p"·data-group-id="6680398878-10">(</span><span·class="p"·data-group-id="6680398878-10">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">map</span><span·class="p"·data-group-id="6680398878-11">(</span><span·class="k">fun</s[·...·truncated·by·diffoscope;·len:·525,·SHA:·b8b46cf0ec2b8a10dd1e717c2344a34692351882d85c311d81ee1b3bda7f53b0·...·]-11">)</span><span·class="p">.</span><span·class="w"> |
| 179 | </span><span·class="nf">double</span><span·class="p"·data-group-id="3922066001-13">(</span><span·class="n">X</span><span·class="p"·data-group-id="3922066001-13">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">X</span><span·class="w">·</span><span·class="o">*</span><span·class="w">·</span><span·class="mi">2</span><span·class="p">.</span></code></pre><p>The·fun·<code·class="inline">F</code>·can·be·evaluated·with·the·following·syntax:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">F</span><span·class="p"·data-group-id="8787072980-1">(</span><span·class="n">Arg1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Arg2</span><span·class="p">,</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Argn</span><span·class="p"·data-group-id="8787072980-1">)</span></code></pre><p>To·check·whether·a·term·is·a·fun,·use·the·test | ||
| 180 | < | 179 | </span><span·class="nf">double</span><span·class="p"·data-group-id="6680398878-13">(</span><span·class="n">X</span><span·class="p"·data-group-id="6680398878-13">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class=[·...·truncated·by·diffoscope;·len:·771,·SHA:·b20872c2844fbba147b26b8fa9c3d3bc62053e3f6b3e42befd82cbddc0333129·...·] |
| 180 | <a·href="../../erts-15.2.3/doc/html/erlang.html#is_function/1"><code·class="inline">is_function/1</code></a>·in·a·guard.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">f</span><span·class="p"·data-group-id="0360371857-1">(</span><span·class="n">F</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Args</span><span·class="p"·data-group-id="0360371857-1">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_function</span><span·class="p"·data-group-id="0360371857-2">(</span><span·class="n">F</span><span·class="p"·data-group-id="0360371857-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | ||
| 181 | ···</span><span·class="nf">apply</span><span·class="p"·data-group-id=" | 181 | ···</span><span·class="nf">apply</span><span·class="p"·data-group-id="0360371857-3">(</span><span·class="n">F</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Args</span><span·class="p"·data-group-id="0360371857-3">)</span><span·class="p">;</span><span·class="w"> |
| 182 | </span><span·class="nf">f</span><span·class="p"·data-group-id=" | 182 | </span><span·class="nf">f</span><span·class="p"·data-group-id="0360371857-4">(</span><span·class="n">N</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="p"·data-group-id="0360371857-4">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·clas[·...·truncated·by·diffoscope;·len:·142,·SHA:·f78229f8c87cba755aa92e367d1a7d8f73af862b8f9bc162f3f9aad47628b352·...·]-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 183 | ···</span><span·class="n">N</span><span·class="p">.</span></code></pre><p>Funs·are·a·distinct·type.·The·BIFs·<code·class="inline">erlang:fun_info/1,2</code>·can·be·used·to·retrieve | 183 | ···</span><span·class="n">N</span><span·class="p">.</span></code></pre><p>Funs·are·a·distinct·type.·The·BIFs·<code·class="inline">erlang:fun_info/1,2</code>·can·be·used·to·retrieve |
| 184 | information·about·a·fun,·and·the·BIF·<a·href="../../erts-15.2.3/doc/html/erlang.html#fun_to_list/1"><code·class="inline">erlang:fun_to_list/1</code></a>·returns·a·textual | 184 | information·about·a·fun,·and·the·BIF·<a·href="../../erts-15.2.3/doc/html/erlang.html#fun_to_list/1"><code·class="inline">erlang:fun_to_list/1</code></a>·returns·a·textual |
| 185 | representation·of·a·fun.·The·<a·href="../../erts-15.2.3/doc/html/erlang.html#check_process_code/2"><code·class="inline">check_process_code/2</code></a> | 185 | representation·of·a·fun.·The·<a·href="../../erts-15.2.3/doc/html/erlang.html#check_process_code/2"><code·class="inline">check_process_code/2</code></a> |
| 186 | BIF·returns·<code·class="inline">true</code>·if·the·process·contains·funs·that·depend·on·the·old·version | 186 | BIF·returns·<code·class="inline">true</code>·if·the·process·contains·funs·that·depend·on·the·old·version |
| 187 | of·a·module.</p><h2·id="variable-bindings-within-a-fun"·class="section-heading"> | 187 | of·a·module.</p><h2·id="variable-bindings-within-a-fun"·class="section-heading"> |
| 188 | ··<a·href="#variable-bindings-within-a-fun"·class="hover-link"> | 188 | ··<a·href="#variable-bindings-within-a-fun"·class="hover-link"> |
| 189 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 189 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 190 | ··</a> | 190 | ··</a> |
| 191 | ··<span·class="text">Variable·Bindings·Within·a·Fun</span> | 191 | ··<span·class="text">Variable·Bindings·Within·a·Fun</span> |
| 192 | </h2> | 192 | </h2> |
| 193 | <p>The·scope·rules·for·variables·that·occur·in·funs·are·as·follows:</p><ul><li>All·variables·that·occur·in·the·head·of·a·fun·are·assumed·to·be·"fresh" | 193 | <p>The·scope·rules·for·variables·that·occur·in·funs·are·as·follows:</p><ul><li>All·variables·that·occur·in·the·head·of·a·fun·are·assumed·to·be·"fresh" |
| 194 | variables.</li><li>Variables·that·are·defined·before·the·fun,·and·that·occur·in·function·calls·or | 194 | variables.</li><li>Variables·that·are·defined·before·the·fun,·and·that·occur·in·function·calls·or |
| 195 | guard·tests·within·the·fun,·have·the·values·they·had·outside·the·fun.</li><li>Variables·cannot·be·exported·from·a·fun.</li></ul><p>The·following·examples·illustrate·these·rules:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">print_list</span><span·class="p"·data-group-id=" | 195 | guard·tests·within·the·fun,·have·the·values·they·had·outside·the·fun.</li><li>Variables·cannot·be·exported·from·a·fun.</li></ul><p>The·following·examples·illustrate·these·rules:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">print_list</span><span·class="p"·data-group-id="2569955263-1">(</span><span·class="n">File</span><span·class="p">,</span><span·class="w">·</span><span·class="n">List</span><span·class="p"·data-group-id="2569955263-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 196 | ····</span><span·class="p"·data-group-id=" | 196 | ····</span><span·class="p"·data-group-id="2569955263-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Stream</span><span·class="p"·data-group-id="2569955263-2">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·[·...·truncated·by·diffoscope;·len:·272,·SHA:·fd74a5936a4358b23d1535c72152c437ab209df18e56f386bce674f07def5f33·...·]-3">)</span><span·class="p">,</span><span·class="w"> |
| 197 | ····</span><span·class="nf">foreach</span><span·class="p"·data-group-id=" | 197 | ····</span><span·class="nf">foreach</span><span·class="p"·data-group-id="2569955263-4">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="2569955263-5">(</span><span·class="n">X</span><span·class="p"·data-group-id="2569955263-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·668,·SHA:·9931be9f6e1b1cb40c297fe6ed8d1a87f46121a585189e8de00fa4b7f2c0ccc4·...·]-4">)</span><span·class="p">,</span><span·class="w"> |
| 198 | ····</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id=" | 198 | ····</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id="2569955263-8">(</span><span·class="n">Stream</span><span·class="p"·data-group-id="2569955263-8">)</span><span·class="p">.</span></code></pre><p>Here,·the·variable·<code·class="inline">X</code>,·defined·in·the·head·of·the·fun,·is·a·new·variable.·The |
| 199 | variable·<code·class="inline">Stream</code>,·which·is·used·within·the·fun,·gets·its·value·from·the | 199 | variable·<code·class="inline">Stream</code>,·which·is·used·within·the·fun,·gets·its·value·from·the |
| 200 | <code·class="inline">file:open</code>·line.</p><p>As·any·variable·that·occurs·in·the·head·of·a·fun·is·considered·a·new·variable, | 200 | <code·class="inline">file:open</code>·line.</p><p>As·any·variable·that·occurs·in·the·head·of·a·fun·is·considered·a·new·variable, |
| 201 | it·is·equally·valid·to·write·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">print_list</span><span·class="p"·data-group-id=" | 201 | it·is·equally·valid·to·write·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">print_list</span><span·class="p"·data-group-id="2631967529-1">(</span><span·class="n">File</span><span·class="p">,</span><span·class="w">·</span><span·class="n">List</span><span·class="p"·data-group-id="2631967529-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 202 | ····</span><span·class="p"·data-group-id=" | 202 | ····</span><span·class="p"·data-group-id="2631967529-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Stream</span><span·class="p"·data-group-id="2631967529-2">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·[·...·truncated·by·diffoscope;·len:·272,·SHA:·c90c8853cd83efd5c29a47ce87c5872f61fc41ce2447f5d9531b67372c5f7cd5·...·]-3">)</span><span·class="p">,</span><span·class="w"> |
| 203 | ····</span><span·class="nf">foreach</span><span·class="p"·data-group-id=" | 203 | ····</span><span·class="nf">foreach</span><span·class="p"·data-group-id="2631967529-4">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="2631967529-5">(</span><span·class="n">File</span><span·class="p"·data-group-id="2631967529-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 204 | ················</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 204 | ················</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="2631967529-6">(</span><span·class="n">Stream</span><span·class="p">,</span><span·class="s">"</span><span·class="si">~p</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="p"·data-group-id="2631967529-7">[<[·...·truncated·by·diffoscope;·len:·127,·SHA:·de6a29e5d2a3df6ccb8314728cad765a3273241188b30d96f5d46d6679ca0636·...·]-6">)</span><span·class="w"> |
| 205 | ············</span><span·class="k">end</span><span·class="p">,</span><span·class="w">·</span><span·class="n">List</span><span·class="p"·data-group-id=" | 205 | ············</span><span·class="k">end</span><span·class="p">,</span><span·class="w">·</span><span·class="n">List</span><span·class="p"·data-group-id="2631967529-4">)</span><span·class="p">,</span><span·class="w"> |
| 206 | ····</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id=" | 206 | ····</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id="2631967529-8">(</span><span·class="n">Stream</span><span·class="p"·data-group-id="2631967529-8">)</span><span·class="p">.</span></code></pre><p>Here,·<code·class="inline">File</code>·is·used·as·the·new·variable·instead·of·<code·class="inline">X</code>.·This·is·not·so·wise |
| 207 | because·code·in·the·fun·body·cannot·refer·to·the·variable·<code·class="inline">File</code>,·which·is | 207 | because·code·in·the·fun·body·cannot·refer·to·the·variable·<code·class="inline">File</code>,·which·is |
| 208 | defined·outside·of·the·fun.·Compiling·this·example·gives·the·following | 208 | defined·outside·of·the·fun.·Compiling·this·example·gives·the·following |
| 209 | diagnostic:</p><pre><code·class="text">./FileName.erl:Line:·Warning:·variable·'File' | 209 | diagnostic:</p><pre><code·class="text">./FileName.erl:Line:·Warning:·variable·'File' |
| 210 | ······shadowed·in·'fun'</code></pre><p>This·indicates·that·the·variable·<code·class="inline">File</code>,·which·is·defined·inside·the·fun, | 210 | ······shadowed·in·'fun'</code></pre><p>This·indicates·that·the·variable·<code·class="inline">File</code>,·which·is·defined·inside·the·fun, |
| 211 | collides·with·the·variable·<code·class="inline">File</code>,·which·is·defined·outside·the·fun.</p><p>The·rules·for·importing·variables·into·a·fun·has·the·consequence·that·certain | 211 | collides·with·the·variable·<code·class="inline">File</code>,·which·is·defined·outside·the·fun.</p><p>The·rules·for·importing·variables·into·a·fun·has·the·consequence·that·certain |
| 212 | pattern·matching·operations·must·be·moved·into·guard·expressions·and·cannot·be | 212 | pattern·matching·operations·must·be·moved·into·guard·expressions·and·cannot·be |
| 213 | written·in·the·head·of·the·fun.·For·example,·you·might·write·the·following·code | 213 | written·in·the·head·of·the·fun.·For·example,·you·might·write·the·following·code |
| 214 | if·you·intend·the·first·clause·of·<code·class="inline">F</code>·to·be·evaluated·when·the·value·of·its | 214 | if·you·intend·the·first·clause·of·<code·class="inline">F</code>·to·be·evaluated·when·the·value·of·its |
| 215 | argument·is·<code·class="inline">Y</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">f</span><span·class="p"·data-group-id=" | 215 | argument·is·<code·class="inline">Y</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">f</span><span·class="p"·data-group-id="9143656732-1">(</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="9143656732-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 216 | ····</span><span·class="n">Y</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 216 | ····</span><span·class="n">Y</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 217 | ····</span><span·class="nf">map</span><span·class="p"·data-group-id=" | 217 | ····</span><span·class="nf">map</span><span·class="p"·data-group-id="9143656732-2">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="9143656732-3">(</span><span·class="n">X</span><span·class="p"·data-group-id="9143656732-3">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="n">X</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="n">Y</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 218 | ·············</span><span·class="p">;</span><span·class="w"> | 218 | ·············</span><span·class="p">;</span><span·class="w"> |
| 219 | ···········</span><span·class="p"·data-group-id=" | 219 | ···········</span><span·class="p"·data-group-id="9143656732-4">(</span><span·class="p">_</span><span·class="p"·data-group-id="9143656732-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 220 | ·············</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 220 | ·············</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 221 | ········</span><span·class="k">end</span><span·class="p">,</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id=" | 221 | ········</span><span·class="k">end</span><span·class="p">,</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="9143656732-2">)</span><span·class="w"> |
| 222 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>instead·of·writing·the·following·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">f</span><span·class="p"·data-group-id=" | 222 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>instead·of·writing·the·following·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">f</span><span·class="p"·data-group-id="3536563426-1">(</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="3536563426-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 223 | ····</span><span·class="n">Y</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 223 | ····</span><span·class="n">Y</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 224 | ····</span><span·class="nf">map</span><span·class="p"·data-group-id=" | 224 | ····</span><span·class="nf">map</span><span·class="p"·data-group-id="3536563426-2">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="3536563426-3">(</span><span·class="n">Y</span><span·class="p"·data-group-id="3536563426-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 225 | ·············</span><span·class="p">;</span><span·class="w"> | 225 | ·············</span><span·class="p">;</span><span·class="w"> |
| 226 | ···········</span><span·class="p"·data-group-id=" | 226 | ···········</span><span·class="p"·data-group-id="3536563426-4">(</span><span·class="p">_</span><span·class="p"·data-group-id="3536563426-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 227 | ·············</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 227 | ·············</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 228 | ········</span><span·class="k">end</span><span·class="p">,</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id=" | 228 | ········</span><span·class="k">end</span><span·class="p">,</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="3536563426-2">)</span><span·class="w"> |
| 229 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><h2·id="funs-and-module-lists"·class="section-heading"> | 229 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><h2·id="funs-and-module-lists"·class="section-heading"> |
| 230 | ··<a·href="#funs-and-module-lists"·class="hover-link"> | 230 | ··<a·href="#funs-and-module-lists"·class="hover-link"> |
| 231 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 231 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 232 | ··</a> | 232 | ··</a> |
| 233 | ··<span·class="text">Funs·and·Module·Lists</span> | 233 | ··<span·class="text">Funs·and·Module·Lists</span> |
| 234 | </h2> | 234 | </h2> |
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| 157 | ··<a·href="#example"·class="hover-link"> | 157 | ··<a·href="#example"·class="hover-link"> |
| 158 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 158 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 159 | ··</a> | 159 | ··</a> |
| 160 | ··<span·class="text">Example</span> | 160 | ··<span·class="text">Example</span> |
| 161 | </h2> | 161 | </h2> |
| 162 | <p>An·example·of·a·simple·server·written·in·plain·Erlang·is·provided·in | 162 | <p>An·example·of·a·simple·server·written·in·plain·Erlang·is·provided·in |
| 163 | <a·href="design_principles.html#ch1">Overview</a>.·The·server·can·be·reimplemented·using | 163 | <a·href="design_principles.html#ch1">Overview</a>.·The·server·can·be·reimplemented·using |
| 164 | <code·class="inline">gen_server</code>,·resulting·in·this·callback·module:</p><p><a·href=""·id="ex"></a></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 164 | <code·class="inline">gen_server</code>,·resulting·in·this·callback·module:</p><p><a·href=""·id="ex"></a></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="4345014958-1">(</span><span·class="ss">ch3</span><span·class="p"·data-group-id="4345014958-1">)</span><span·class="p">.</span><span·class="w"> |
| 165 | </span><span·class="p">-</span><span·class="na">behaviour</span><span·class="p"·data-group-id=" | 165 | </span><span·class="p">-</span><span·class="na">behaviour</span><span·class="p"·data-group-id="4345014958-2">(</span><span·class="ss">gen_server</span><span·class="p"·data-group-id="4345014958-2">)</span><span·class="p">.</span><span·class="w"> |
| 166 | </span><span·class="w"> | 166 | </span><span·class="w"> |
| 167 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 167 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="4345014958-3">(</span><span·class="p"·data-group-id="4345014958-4">[</span><span·class="ss">start_link</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data-group-id="4345014958-4">]</span><span·class="p"·data-group-id="4345014958-3">)</span><span·class="p">.</span><span·class="w"> |
| 168 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 168 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="4345014958-5">(</span><span·class="p"·data-group-id="4345014958-6">[</span><span·class="ss">alloc</span><span·class="p">/</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">free</span><span·class="p">/</span><sp[·...·truncated·by·diffoscope;·len:·116,·SHA:·f2ced13d6d62a8ccb5e0d1a4e905d540389a825779bf0caef88c4a0ff7ffc61e·...·]-5">)</span><span·class="p">.</span><span·class="w"> |
| 169 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 169 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="4345014958-7">(</span><span·class="p"·data-group-id="4345014958-8">[</span><span·class="ss">init</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">handle_call</span><span·class="p">/</sp[·...·truncated·by·diffoscope;·len:·254,·SHA:·9ed9da246c22acc0cc31bdb1443afd8ddd4d6a5d04312156faef9e16d1179f37·...·]-7">)</span><span·class="p">.</span><span·class="w"> |
| 170 | </span><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 170 | </span><span·class="nf">start_link</span><span·class="p"·data-group-id="4345014958-9">(</span><span·class="p"·data-group-id="4345014958-9">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 171 | ····</span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 171 | ····</span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id="4345014958-10">(</span><span·class="p"·data-group-id="4345014958-11">{</span><span·class="ss">local</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ch3</span><span·class="p"·data-group-id="4345014958-11">}</span><span·class="p">,</sp[·...·truncated·by·diffoscope;·len:·407,·SHA:·dea8315b0d5a70277d07c3472174878fd04e1cb3e4a93d555923edd5ff93a95b·...·]-10">)</span><span·class="p">.</span><span·class="w"> |
| 172 | </span><span·class="nf">alloc</span><span·class="p"·data-group-id=" | 172 | </span><span·class="nf">alloc</span><span·class="p"·data-group-id="4345014958-14">(</span><span·class="p"·data-group-id="4345014958-14">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 173 | ····</span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id=" | 173 | ····</span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id="4345014958-15">(</span><span·class="ss">ch3</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">alloc</span><span·class="p"·data-group-id="4345014958-15">)</span><span·class="p">.</span><span·class="w"> |
| 174 | </span><span·class="nf">free</span><span·class="p"·data-group-id=" | 174 | </span><span·class="nf">free</span><span·class="p"·data-group-id="4345014958-16">(</span><span·class="n">Ch</span><span·class="p"·data-group-id="4345014958-16">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 175 | ····</span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="nf">cast</span><span·class="p"·data-group-id=" | 175 | ····</span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="nf">cast</span><span·class="p"·data-group-id="4345014958-17">(</span><span·class="ss">ch3</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4345014958-18">{</span><span·class="ss">free</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ch</span><sp[·...·truncated·by·diffoscope;·len:·92,·SHA:·73c47bb2dd837a43761fd3ec25e205c476eb1e56f0876b085916e464f1d1a919·...·]-17">)</span><span·class="p">.</span><span·class="w"> |
| 176 | </span><span·class="nf">init</span><span·class="p"·data-group-id=" | 176 | </span><span·class="nf">init</span><span·class="p"·data-group-id="4345014958-19">(</span><span·class="p">_</span><span·class="n">Args</span><span·class="p"·data-group-id="4345014958-19">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 177 | ····</span><span·class="p"·data-group-id=" | 177 | ····</span><span·class="p"·data-group-id="4345014958-20">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">channels</span><span·class="p"·data-group-id="4345014958-21">(</span><span·class="p"·data-group-id="4345014958-21">)</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·22,·SHA:·7a0fbd7f4733b72dafc46cbd028d67ec8c8ff57ccd846fb58b75d227c3cb2500·...·]-20">}</span><span·class="p">.</span><span·class="w"> |
| 178 | </span><span·class="nf">handle_call</span><span·class="p"·data-group-id=" | 178 | </span><span·class="nf">handle_call</span><span·class="p"·data-group-id="4345014958-22">(</span><span·class="ss">alloc</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">From</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Chs</span><span·class="p"·data-group-id="[·...·truncated·by·diffoscope;·len:·10,·SHA:·a5acd36ac7dce753dc9c162c68ff305e1db36d1f5e5d3ff3891fca3bd99a0870·...·]-22">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 179 | ····</span><span·class="p"·data-group-id=" | 179 | ····</span><span·class="p"·data-group-id="4345014958-23">{</span><span·class="n">Ch</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Chs2</span><span·class="p"·data-group-id="4345014958-23">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·c[·...·truncated·by·diffoscope;·len:·143,·SHA:·00c63e3feb2b60d95e1f36946be4c60b81b5fe0288f0e1a5e29309bcb82d06e2·...·]-24">)</span><span·class="p">,</span><span·class="w"> |
| 180 | ····</span><span·class="p"·data-group-id=" | 180 | ····</span><span·class="p"·data-group-id="4345014958-25">{</span><span·class="ss">reply</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ch</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Chs2</span><span·class="p"·data-group-id="4345014958-25">}</span><span·class="p">.</span><span·class="w"> |
| 181 | </span><span·class="nf">handle_cast</span><span·class="p"·data-group-id=" | 181 | </span><span·class="nf">handle_cast</span><span·class="p"·data-group-id="4345014958-26">(</span><span·class="p"·data-group-id="4345014958-27">{</span><span·class="ss">free</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ch</span><span·class="p"·data-group-id="4345014958-27">}</span><span·class="p">,</span>[·...·truncated·by·diffoscope;·len:·91,·SHA:·39a64d74d8a9bc90b2f6c5228fb0c8a3c31b4f99d3c74c972bd22b7981a2fbc8·...·]-26">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 182 | ····</span><span·class="n">Chs2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">free</span><span·class="p"·data-group-id=" | 182 | ····</span><span·class="n">Chs2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">free</span><span·class="p"·data-group-id="4345014958-28">(</span><span·class="n">Ch</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Chs</span><span·class="p"·data-group-id="4345014958-28">)</span><span·class="p">,</span><span·class="w"> |
| 183 | ····</span><span·class="p"·data-group-id=" | 183 | ····</span><span·class="p"·data-group-id="4345014958-29">{</span><span·class="ss">noreply</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Chs2</span><span·class="p"·data-group-id="4345014958-29">}</span><span·class="p">.</span></code></pre><p>The·code·is·explained·in·the·next·sections.</p><h2·id="starting-a-gen_server"·class="section-heading"> |
| 184 | ··<a·href="#starting-a-gen_server"·class="hover-link"> | 184 | ··<a·href="#starting-a-gen_server"·class="hover-link"> |
| 185 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 185 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 186 | ··</a> | 186 | ··</a> |
| 187 | ··<span·class="text">Starting·a·Gen_Server</span> | 187 | ··<span·class="text">Starting·a·Gen_Server</span> |
| 188 | </h2> | 188 | </h2> |
| 189 | <p>In·the·example·in·the·previous·section,·<code·class="inline">gen_server</code>·is·started·by·calling | 189 | <p>In·the·example·in·the·previous·section,·<code·class="inline">gen_server</code>·is·started·by·calling |
| 190 | <code·class="inline">ch3:start_link()</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 190 | <code·class="inline">ch3:start_link()</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">start_link</span><span·class="p"·data-group-id="6450615940-1">(</span><span·class="p"·data-group-id="6450615940-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 191 | ····</span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 191 | ····</span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id="6450615940-2">(</span><span·class="p"·data-group-id="6450615940-3">{</span><span·class="ss">local</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ch3</span><span·class="p"·data-group-id="6450615940-3">}</span><span·class="p">,</span>[·...·truncated·by·diffoscope;·len:·682,·SHA:·dfa6c429039af0963e3a331804d97caefa6b90c1bd810cba29557b4ad816be23·...·]-6">}</span></code></pre><p><code·class="inline">start_link/0</code>·calls·function·<a·href="../../lib/stdlib-6.2.1/doc/html/gen_server.html#start_link/4"><code·class="inline">gen_server:start_link/4</code></a>.··This·function |
| 192 | spawns·and·links·to·a·new·process,·a·<code·class="inline">gen_server</code>.</p><ul><li><p>The·first·argument,·<code·class="inline">{local,·ch3}</code>,·specifies·the·name. | 192 | spawns·and·links·to·a·new·process,·a·<code·class="inline">gen_server</code>.</p><ul><li><p>The·first·argument,·<code·class="inline">{local,·ch3}</code>,·specifies·the·name. |
| 193 | The·gen_server·is·then·locally·registered·as·<code·class="inline">ch3</code>.</p><p>If·the·name·is·omitted,·the·<code·class="inline">gen_server</code>·is·not·registered.·Instead·its·pid | 193 | The·gen_server·is·then·locally·registered·as·<code·class="inline">ch3</code>.</p><p>If·the·name·is·omitted,·the·<code·class="inline">gen_server</code>·is·not·registered.·Instead·its·pid |
| 194 | must·be·used.·The·name·can·also·be·given·as·<code·class="inline">{global,·Name}</code>,·in·which·case | 194 | must·be·used.·The·name·can·also·be·given·as·<code·class="inline">{global,·Name}</code>,·in·which·case |
| 195 | the·<code·class="inline">gen_server</code>·is·registered·using·<a·href="../../lib/kernel-10.2.3/doc/html/global.html#register_name/2"><code·class="inline">global:register_name/2</code></a>.</p></li><li><p>The·second·argument,·<code·class="inline">ch3</code>,·is·the·name·of·the·callback·module,·which·is | 195 | the·<code·class="inline">gen_server</code>·is·registered·using·<a·href="../../lib/kernel-10.2.3/doc/html/global.html#register_name/2"><code·class="inline">global:register_name/2</code></a>.</p></li><li><p>The·second·argument,·<code·class="inline">ch3</code>,·is·the·name·of·the·callback·module,·which·is |
| 196 | the·module·where·the·callback·functions·are·located.</p><p>The·interface·functions·(<code·class="inline">start_link/0</code>,·<code·class="inline">alloc/0</code>,·and·<code·class="inline">free/1</code>)·are·located | 196 | the·module·where·the·callback·functions·are·located.</p><p>The·interface·functions·(<code·class="inline">start_link/0</code>,·<code·class="inline">alloc/0</code>,·and·<code·class="inline">free/1</code>)·are·located |
| 197 | in·the·same·module·as·the·callback·functions·(<code·class="inline">init/1</code>,·<code·class="inline">handle_call/3</code>,·and | 197 | in·the·same·module·as·the·callback·functions·(<code·class="inline">init/1</code>,·<code·class="inline">handle_call/3</code>,·and |
| 198 | <code·class="inline">handle_cast/2</code>).·It·is·usually·good·programming·practice·to·have·the·code | 198 | <code·class="inline">handle_cast/2</code>).·It·is·usually·good·programming·practice·to·have·the·code |
| 199 | corresponding·to·one·process·contained·in·a·single·module.</p></li><li><p>The·third·argument,·<code·class="inline">[]</code>,·is·a·term·that·is·passed·as·is·to·the·callback | 199 | corresponding·to·one·process·contained·in·a·single·module.</p></li><li><p>The·third·argument,·<code·class="inline">[]</code>,·is·a·term·that·is·passed·as·is·to·the·callback |
| 200 | function·<code·class="inline">init</code>.·Here,·<code·class="inline">init</code>·does·not·need·any·indata·and·ignores·the | 200 | function·<code·class="inline">init</code>.·Here,·<code·class="inline">init</code>·does·not·need·any·indata·and·ignores·the |
| 201 | argument.</p></li><li><p>The·fourth·argument,·<code·class="inline">[]</code>,·is·a·list·of·options.·See·<a·href="../../lib/stdlib-6.2.1/doc/html/gen_server.html"><code·class="inline">gen_server</code></a> | 201 | argument.</p></li><li><p>The·fourth·argument,·<code·class="inline">[]</code>,·is·a·list·of·options.·See·<a·href="../../lib/stdlib-6.2.1/doc/html/gen_server.html"><code·class="inline">gen_server</code></a> |
| 202 | for·the·available·options.</p></li></ul><p>If·name·registration·succeeds,·the·new·<code·class="inline">gen_server</code>·process·calls·the·callback | 202 | for·the·available·options.</p></li></ul><p>If·name·registration·succeeds,·the·new·<code·class="inline">gen_server</code>·process·calls·the·callback |
| 203 | function·<code·class="inline">ch3:init([])</code>.·<code·class="inline">init</code>·is·expected·to·return·<code·class="inline">{ok,·State}</code>,·where | 203 | function·<code·class="inline">ch3:init([])</code>.·<code·class="inline">init</code>·is·expected·to·return·<code·class="inline">{ok,·State}</code>,·where |
| 204 | <code·class="inline">State</code>·is·the·internal·state·of·the·<code·class="inline">gen_server</code>.·In·this·case,·the·state·is | 204 | <code·class="inline">State</code>·is·the·internal·state·of·the·<code·class="inline">gen_server</code>.·In·this·case,·the·state·is |
| 205 | the·available·channels.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">init</span><span·class="p"·data-group-id=" | 205 | the·available·channels.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">init</span><span·class="p"·data-group-id="6215325966-1">(</span><span·class="p">_</span><span·class="n">Args</span><span·class="p"·data-group-id="6215325966-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 206 | ····</span><span·class="p"·data-group-id=" | 206 | ····</span><span·class="p"·data-group-id="6215325966-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">channels</span><span·class="p"·data-group-id="6215325966-3">(</span><span·class="p"·data-group-id="6215325966-3">)</span><span·class="p"·data-g[·...·truncated·by·diffoscope;·len:·19,·SHA:·6b9b91209ee942a4c483eac926d3369c935100575fe8da51664f211c2f385ac8·...·]-2">}</span><span·class="p">.</span></code></pre><p><a·href="../../lib/stdlib-6.2.1/doc/html/gen_server.html#start_link/4"><code·class="inline">gen_server:start_link/4</code></a>·is·synchronous.·It·does·not·return·until·the |
| 207 | <code·class="inline">gen_server</code>·has·been·initialized·and·is·ready·to·receive·requests.</p><p><a·href="../../lib/stdlib-6.2.1/doc/html/gen_server.html#start_link/4"><code·class="inline">gen_server:start_link/4</code></a>·must·be·used·if·the·<code·class="inline">gen_server</code>·is·part·of | 207 | <code·class="inline">gen_server</code>·has·been·initialized·and·is·ready·to·receive·requests.</p><p><a·href="../../lib/stdlib-6.2.1/doc/html/gen_server.html#start_link/4"><code·class="inline">gen_server:start_link/4</code></a>·must·be·used·if·the·<code·class="inline">gen_server</code>·is·part·of |
| 208 | a·supervision·tree,·meaning·that·it·was·started·by·a·supervisor.·There | 208 | a·supervision·tree,·meaning·that·it·was·started·by·a·supervisor.·There |
| 209 | is·another·function,·<a·href="../../lib/stdlib-6.2.1/doc/html/gen_server.html#start/4"><code·class="inline">gen_server:start/4</code></a>,·to·start·a·standalone | 209 | is·another·function,·<a·href="../../lib/stdlib-6.2.1/doc/html/gen_server.html#start/4"><code·class="inline">gen_server:start/4</code></a>,·to·start·a·standalone |
| 210 | <code·class="inline">gen_server</code>·that·is·not·part·of·a·supervision·tree.</p><h2·id="synchronous-requests-call"·class="section-heading"> | 210 | <code·class="inline">gen_server</code>·that·is·not·part·of·a·supervision·tree.</p><h2·id="synchronous-requests-call"·class="section-heading"> |
| 211 | ··<a·href="#synchronous-requests-call"·class="hover-link"> | 211 | ··<a·href="#synchronous-requests-call"·class="hover-link"> |
| 212 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 212 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 213 | ··</a> | 213 | ··</a> |
| Offset 221, 32 lines modified | Offset 221, 32 lines modified | ||
| 221 | </h2> | 221 | </h2> |
| 222 | <p>The·synchronous·request·<code·class="inline">alloc()</code>·is·implemented·using·<a·href="../../lib/stdlib-6.2.1/doc/html/gen_server.html#call/2"><code·class="inline">gen_server:call/2</code></a>:</p><pre><code·class="text">alloc()·-> | 222 | <p>The·synchronous·request·<code·class="inline">alloc()</code>·is·implemented·using·<a·href="../../lib/stdlib-6.2.1/doc/html/gen_server.html#call/2"><code·class="inline">gen_server:call/2</code></a>:</p><pre><code·class="text">alloc()·-> |
| 223 | ····gen_server:call(ch3,·alloc).</code></pre><p><code·class="inline">ch3</code>·is·the·name·of·the·<code·class="inline">gen_server</code>·and·must·agree·with·the·name | 223 | ····gen_server:call(ch3,·alloc).</code></pre><p><code·class="inline">ch3</code>·is·the·name·of·the·<code·class="inline">gen_server</code>·and·must·agree·with·the·name |
| 224 | used·to·start·it.·<code·class="inline">alloc</code>·is·the·actual·request.</p><p>The·request·is·made·into·a·message·and·sent·to·the·<code·class="inline">gen_server</code>. | 224 | used·to·start·it.·<code·class="inline">alloc</code>·is·the·actual·request.</p><p>The·request·is·made·into·a·message·and·sent·to·the·<code·class="inline">gen_server</code>. |
| 225 | When·the·request·is·received,·the·<code·class="inline">gen_server</code>·calls | 225 | When·the·request·is·received,·the·<code·class="inline">gen_server</code>·calls |
| 226 | <code·class="inline">handle_call(Request,·From,·State)</code>,·which·is·expected·to·return | 226 | <code·class="inline">handle_call(Request,·From,·State)</code>,·which·is·expected·to·return |
| 227 | a·tuple·<code·class="inline">{reply,Reply,State1}</code>.·<code·class="inline">Reply</code>·is·the·reply·that·is·to·be·sent·back | 227 | a·tuple·<code·class="inline">{reply,Reply,State1}</code>.·<code·class="inline">Reply</code>·is·the·reply·that·is·to·be·sent·back |
| 228 | to·the·client,·and·<code·class="inline">State1</code>·is·a·new·value·for·the·state·of·the·<code·class="inline">gen_server</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">handle_call</span><span·class="p"·data-group-id=" | 228 | to·the·client,·and·<code·class="inline">State1</code>·is·a·new·value·for·the·state·of·the·<code·class="inline">gen_server</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">handle_call</span><span·class="p"·data-group-id="8017639037-1">(</span><span·class="ss">alloc</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">From</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Chs</span><span·class="p"·data-group-id="8[·...·truncated·by·diffoscope;·len:·8,·SHA:·a3c5799c6edf8f21f7640755dbcddd031bd4af585a0d970b6f8e35dc39e2272b·...·]7-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 229 | ····</span><span·class="p"·data-group-id=" | 229 | ····</span><span·class="p"·data-group-id="8017639037-2">{</span><span·class="n">Ch</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Chs2</span><span·class="p"·data-group-id="8017639037-2">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·cla[·...·truncated·by·diffoscope;·len:·139,·SHA:·25ea0dea293a8484ed1a5ca6e70add3f73ff0c27a87754bd6665540d5920d8e4·...·]7-3">)</span><span·class="p">,</span><span·class="w"> |
| 230 | ····</span><span·class="p"·data-group-id=" | 230 | ····</span><span·class="p"·data-group-id="8017639037-4">{</span><span·class="ss">reply</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ch</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Chs2</span><span·class="p"·data-group-id="8017639037-4">}</span><span·class="p">.</span></code></pre><p>In·this·case,·the·reply·is·the·allocated·channel·<code·class="inline">Ch</code>·and·the·new·state·is·the |
| 231 | set·of·remaining·available·channels·<code·class="inline">Chs2</code>.</p><p>Thus,·the·call·<code·class="inline">ch3:alloc()</code>·returns·the·allocated·channel·<code·class="inline">Ch</code>·and·the | 231 | set·of·remaining·available·channels·<code·class="inline">Chs2</code>.</p><p>Thus,·the·call·<code·class="inline">ch3:alloc()</code>·returns·the·allocated·channel·<code·class="inline">Ch</code>·and·the |
| 232 | <code·class="inline">gen_server</code>·then·waits·for·new·requests,·now·with·an·updated·list·of | 232 | <code·class="inline">gen_server</code>·then·waits·for·new·requests,·now·with·an·updated·list·of |
| 233 | available·channels.</p><h2·id="asynchronous-requests-cast"·class="section-heading"> | 233 | available·channels.</p><h2·id="asynchronous-requests-cast"·class="section-heading"> |
| 234 | ··<a·href="#asynchronous-requests-cast"·class="hover-link"> | 234 | ··<a·href="#asynchronous-requests-cast"·class="hover-link"> |
| 235 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 235 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 236 | ··</a> | 236 | ··</a> |
| 237 | ··<span·class="text">Asynchronous·Requests·-·Cast</span> | 237 | ··<span·class="text">Asynchronous·Requests·-·Cast</span> |
| 238 | </h2> | 238 | </h2> |
| 239 | <p>The·asynchronous·request·<code·class="inline">free(Ch)</code>·is·implemented·using·<a·href="../../lib/stdlib-6.2.1/doc/html/gen_server.html#cast/2"><code·class="inline">gen_server:cast/2</code></a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">free</span><span·class="p"·data-group-id="07 | 239 | <p>The·asynchronous·request·<code·class="inline">free(Ch)</code>·is·implemented·using·<a·href="../../lib/stdlib-6.2.1/doc/html/gen_server.html#cast/2"><code·class="inline">gen_server:cast/2</code></a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">free</span><span·class="p"·data-group-id="7074247681-1">(</span><span·class="n">Ch</span><span·class="p"·data-group-id="7074247681-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 240 | ····</span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="nf">cast</span><span·class="p"·data-group-id="07 | 240 | ····</span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="nf">cast</span><span·class="p"·data-group-id="7074247681-2">(</span><span·class="ss">ch3</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7074247681-3">{</span><span·class="ss">free</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ch</span><span[·...·truncated·by·diffoscope;·len:·89,·SHA:·a48dceab5943285c8f56a6db8472b3480db29b35677ab4c3f986f81a72cdf1ca·...·]-2">)</span><span·class="p">.</span></code></pre><p><code·class="inline">ch3</code>·is·the·name·of·the·<code·class="inline">gen_server</code>.·<code·class="inline">{free,·Ch}</code>·is·the·actual·request.</p><p>The·request·is·made·into·a·message·and·sent·to·the·<code·class="inline">gen_server</code>. |
| 241 | <code·class="inline">cast</code>,·and·thus·<code·class="inline">free</code>,·then·returns·<code·class="inline">ok</code>.</p><p>When·the·request·is·received,·the·<code·class="inline">gen_server</code>·calls | 241 | <code·class="inline">cast</code>,·and·thus·<code·class="inline">free</code>,·then·returns·<code·class="inline">ok</code>.</p><p>When·the·request·is·received,·the·<code·class="inline">gen_server</code>·calls |
| 242 | <code·class="inline">handle_cast(Request,·State)</code>,·which·is·expected·to·return·a·tuple | 242 | <code·class="inline">handle_cast(Request,·State)</code>,·which·is·expected·to·return·a·tuple |
| 243 | <code·class="inline">{noreply,State1}</code>.·<code·class="inline">State1</code>·is·a·new·value·for·the·state·of·the·<code·class="inline">gen_server</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">handle_cast</span><span·class="p"·data-group-id=" | 243 | <code·class="inline">{noreply,State1}</code>.·<code·class="inline">State1</code>·is·a·new·value·for·the·state·of·the·<code·class="inline">gen_server</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">handle_cast</span><span·class="p"·data-group-id="9922383152-1">(</span><span·class="p"·data-group-id="9922383152-2">{</span><span·class="ss">free</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ch</span><span·class="p"·data-group-id="9922383152-2">}</span><span·class="p">,</span><sp[·...·truncated·by·diffoscope;·len:·88,·SHA:·93b45758d661036f08d07b3baa1542b552557588072a7437e79293c424f7fd4f·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 244 | ····</span><span·class="n">Chs2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">free</span><span·class="p"·data-group-id=" | 244 | ····</span><span·class="n">Chs2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">free</span><span·class="p"·data-group-id="9922383152-3">(</span><span·class="n">Ch</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Chs</span><span·class="p"·data-group-id="9922383152-3">)</span><span·class="p">,</span><span·class="w"> |
| 245 | ····</span><span·class="p"·data-group-id=" | 245 | ····</span><span·class="p"·data-group-id="9922383152-4">{</span><span·class="ss">noreply</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Chs2</span><span·class="p"·data-group-id="9922383152-4">}</span><span·class="p">.</span></code></pre><p>In·this·case,·the·new·state·is·the·updated·list·of·available·channels·<code·class="inline">Chs2</code>. |
| 246 | The·<code·class="inline">gen_server</code>·is·now·ready·for·new·requests.</p><h2·id="stopping"·class="section-heading"> | 246 | The·<code·class="inline">gen_server</code>·is·now·ready·for·new·requests.</p><h2·id="stopping"·class="section-heading"> |
| 247 | ··<a·href="#stopping"·class="hover-link"> | 247 | ··<a·href="#stopping"·class="hover-link"> |
| 248 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 248 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 249 | ··</a> | 249 | ··</a> |
| 250 | ··<span·class="text">Stopping</span> | 250 | ··<span·class="text">Stopping</span> |
| 251 | </h2> | 251 | </h2> |
| 252 | <h3·id="in-a-supervision-tree"·class="section-heading"> | 252 | <h3·id="in-a-supervision-tree"·class="section-heading"> |
| Offset 257, 69 lines modified | Offset 257, 69 lines modified | ||
| 257 | </h3> | 257 | </h3> |
| 258 | <p>If·the·<code·class="inline">gen_server</code>·is·part·of·a·supervision·tree,·no·stop·function·is·needed. | 258 | <p>If·the·<code·class="inline">gen_server</code>·is·part·of·a·supervision·tree,·no·stop·function·is·needed. |
| 259 | The·<code·class="inline">gen_server</code>·is·automatically·terminated·by·its·supervisor.··Exactly·how | 259 | The·<code·class="inline">gen_server</code>·is·automatically·terminated·by·its·supervisor.··Exactly·how |
| 260 | this·is·done·is·defined·by·a·<a·href="sup_princ.html#shutdown">shutdown·strategy</a> | 260 | this·is·done·is·defined·by·a·<a·href="sup_princ.html#shutdown">shutdown·strategy</a> |
| 261 | set·in·the·supervisor.</p><p>If·it·is·necessary·to·clean·up·before·termination,·the·shutdown·strategy | 261 | set·in·the·supervisor.</p><p>If·it·is·necessary·to·clean·up·before·termination,·the·shutdown·strategy |
| 262 | must·be·a·time-out·value·and·the·<code·class="inline">gen_server</code>·must·be·set·to·trap·exit·signals | 262 | must·be·a·time-out·value·and·the·<code·class="inline">gen_server</code>·must·be·set·to·trap·exit·signals |
| 263 | in·function·<code·class="inline">init</code>.·When·ordered·to·shutdown,·the·<code·class="inline">gen_server</code>·then·calls | 263 | in·function·<code·class="inline">init</code>.·When·ordered·to·shutdown,·the·<code·class="inline">gen_server</code>·then·calls |
| 264 | the·callback·function·<code·class="inline">terminate(shutdown,·State)</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">init</span><span·class="p"·data-group-id=" | 264 | the·callback·function·<code·class="inline">terminate(shutdown,·State)</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">init</span><span·class="p"·data-group-id="8669278716-1">(</span><span·class="n">Args</span><span·class="p"·data-group-id="8669278716-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 265 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">,</span><span·class="w"> | 265 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">,</span><span·class="w"> |
| 266 | ····</span><span·class="nf">process_flag</span><span·class="p"·data-group-id=" | 266 | ····</span><span·class="nf">process_flag</span><span·class="p"·data-group-id="8669278716-2">(</span><span·class="ss">trap_exit</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">true</span><span·class="p"·data-group-id="8669278716-2">)</span><span·class="p">,</span><span·class="w"> |
| 267 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">,</span><span·class="w"> | 267 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">,</span><span·class="w"> |
| 268 | ····</span><span·class="p"·data-group-id=" | 268 | ····</span><span·class="p"·data-group-id="8669278716-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="p"·data-group-id="8669278716-3">}</span><span·class="p">.</span><span·class="w"> |
| 269 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 269 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 270 | </span><span·class="nf">terminate</span><span·class="p"·data-group-id=" | 270 | </span><span·class="nf">terminate</span><span·class="p"·data-group-id="8669278716-4">(</span><span·class="ss">shutdown</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="p"·data-group-id="8669278716-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 271 | ····</span><span·class="c1">%%·Code·for·cleaning·up·here</span><span·class="w"> | 271 | ····</span><span·class="c1">%%·Code·for·cleaning·up·here</span><span·class="w"> |
| 272 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 272 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 273 | ····</span><span·class="ss">ok</span><span·class="p">.</span></code></pre><h3·id="standalone-gen_servers"·class="section-heading"> | 273 | ····</span><span·class="ss">ok</span><span·class="p">.</span></code></pre><h3·id="standalone-gen_servers"·class="section-heading"> |
| 274 | ··<a·href="#standalone-gen_servers"·class="hover-link"> | 274 | ··<a·href="#standalone-gen_servers"·class="hover-link"> |
| 275 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 275 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 276 | ··</a> | 276 | ··</a> |
| 277 | ··<span·class="text">Standalone·Gen_Servers</span> | 277 | ··<span·class="text">Standalone·Gen_Servers</span> |
| 278 | </h3> | 278 | </h3> |
| 279 | <p>If·the·<code·class="inline">gen_server</code>·is·not·part·of·a·supervision·tree,·a·stop·function | 279 | <p>If·the·<code·class="inline">gen_server</code>·is·not·part·of·a·supervision·tree,·a·stop·function |
| 280 | can·be·useful,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 280 | can·be·useful,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 281 | </span><span·class="nf">export</span><span·class="p"·data-group-id="4 | 281 | </span><span·class="nf">export</span><span·class="p"·data-group-id="4099369583-1">(</span><span·class="p"·data-group-id="4099369583-2">[</span><span·class="ss">stop</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data-group-id="4099369583-2">]</span><span·class="p"·data-group-id="4099369583-1">)</span><span·class="p">.</span><span·class="w"> |
| 282 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 282 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 283 | </span><span·class="nf">stop</span><span·class="p"·data-group-id="4 | 283 | </span><span·class="nf">stop</span><span·class="p"·data-group-id="4099369583-3">(</span><span·class="p"·data-group-id="4099369583-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
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| Offset 161, 75 lines modified | Offset 161, 75 lines modified | ||
| 161 | belonging·to·the·primary·application.</p><h2·id="specifying-included-applications"·class="section-heading"> | 161 | belonging·to·the·primary·application.</p><h2·id="specifying-included-applications"·class="section-heading"> |
| 162 | ··<a·href="#specifying-included-applications"·class="hover-link"> | 162 | ··<a·href="#specifying-included-applications"·class="hover-link"> |
| 163 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 163 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 164 | ··</a> | 164 | ··</a> |
| 165 | ··<span·class="text">Specifying·Included·Applications</span> | 165 | ··<span·class="text">Specifying·Included·Applications</span> |
| 166 | </h2> | 166 | </h2> |
| 167 | <p>Which·applications·to·include·is·defined·by·the·<code·class="inline">included_applications</code>·key·in | 167 | <p>Which·applications·to·include·is·defined·by·the·<code·class="inline">included_applications</code>·key·in |
| 168 | the·<code·class="inline">.app</code>·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 168 | the·<code·class="inline">.app</code>·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8740287707-1">{</span><span·class="ss">application</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">prim_app</span><span·class="p">,</span><span·class="w"> |
| 169 | ·</span><span·class="p"·data-group-id=" | 169 | ·</span><span·class="p"·data-group-id="8740287707-2">[</span><span·class="p"·data-group-id="8740287707-3">{</span><span·class="ss">description</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"Tree·application"</span><span·class="p"·data-group-id="8740287707-3">}</span><span·class="p">,</span><span·class="w"> |
| 170 | ··</span><span·class="p"·data-group-id=" | 170 | ··</span><span·class="p"·data-group-id="8740287707-4">{</span><span·class="ss">vsn</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"1"</span><span·class="p"·data-group-id="8740287707-4">}</span><span·class="p">,</span><span·class="w"> |
| 171 | ··</span><span·class="p"·data-group-id=" | 171 | ··</span><span·class="p"·data-group-id="8740287707-5">{</span><span·class="ss">modules</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8740287707-6">[</span><span·class="ss">prim_app_cb</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">pr[·...·truncated·by·diffoscope;·len:·198,·SHA:·a5e3a0071ee8a3f6299adcf200e803c81e7de9620e6172885b01d80f3bf7373a·...·]-5">}</span><span·class="p">,</span><span·class="w"> |
| 172 | ··</span><span·class="p"·data-group-id=" | 172 | ··</span><span·class="p"·data-group-id="8740287707-7">{</span><span·class="ss">registered</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8740287707-8">[</span><span·class="ss">prim_app_server</span><span·class="p"·data-group-id="8740287707-8">]</span><span·c[·...·truncated·by·diffoscope;·len:·34,·SHA:·fab8c65f9352d57cab602dfce7f0267df11bf99ada62f5163878400853bccd3a·...·]-7">}</span><span·class="p">,</span><span·class="w"> |
| 173 | ··</span><span·class="p"·data-group-id=" | 173 | ··</span><span·class="p"·data-group-id="8740287707-9">{</span><span·class="ss">included_applications</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8740287707-10">[</span><span·class="ss">incl_app</span><span·class="p"·data-group-id="8740287707-10">]</span><[·...·truncated·by·diffoscope;·len:·40,·SHA:·691f414fdaa24df8e72cd74cbd07748bcbb42d7c801ceeba7b8bb7a4ca530073·...·]-9">}</span><span·class="p">,</span><span·class="w"> |
| 174 | ··</span><span·class="p"·data-group-id=" | 174 | ··</span><span·class="p"·data-group-id="8740287707-11">{</span><span·class="ss">applications</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8740287707-12">[</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">[·...·truncated·by·diffoscope;·len:·184,·SHA:·f506cbee2071b36c86e924f33495b5a5d21f951d7cca713d57ef7bfa942a1d74·...·]-11">}</span><span·class="p">,</span><span·class="w"> |
| 175 | ··</span><span·class="p"·data-group-id=" | 175 | ··</span><span·class="p"·data-group-id="8740287707-13">{</span><span·class="ss">mod</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8740287707-14">{</span><span·class="ss">prim_app_cb</span><span·class="p">,</span><span·class="p"·data-group-id="8740287707-15"[·...·truncated·by·diffoscope;·len:·158,·SHA:·2554b0341ab672d086a44eb26cde5b4f4fe54df8d0dc5f352c42de928ab984a2·...·]-13">}</span><span·class="p">,</span><span·class="w"> |
| 176 | ··</span><span·class="p"·data-group-id="9857971273-16">{</span><span·class="ss">env</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9857971273-17">[</span><span·class="p"·data-group-id="9857971273-18">{</span><span·class="ss">file</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"/usr/local/log"</span><span·class="p"·data-group-id="9857971273-18">}</span><span·class="p"·data-group-id="9857971273-17">]</span><span·class="p"·data-group-id="9857971273-16">}</span><span·class="w"> | ||
| 177 | ·</span><span·class="p"·data-group-id=" | 176 | ··</span><span·class="p"·data-group-id="8740287707-16">{</span><span·class="ss">env</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8740287707-17">[</span><span·class="p"·data-group-id="8740287707-18">{</span><span·class[·...·truncated·by·diffoscope;·len:·290,·SHA:·3ffc137f6474dc8c987adf83f737a7d7e62b835946714311e07ca355ad3e35a0·...·]"> |
| 177 | ·</span><span·class="p"·data-group-id="8740287707-2">]</span><span·class="p"·data-group-id="8740287707-1">}</span><span·class="p">.</span></code></pre><h2·id="synchronizing-processes-during-startup"·class="section-heading"> | ||
| 178 | ··<a·href="#synchronizing-processes-during-startup"·class="hover-link"> | 178 | ··<a·href="#synchronizing-processes-during-startup"·class="hover-link"> |
| 179 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 179 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 180 | ··</a> | 180 | ··</a> |
| 181 | ··<span·class="text">Synchronizing·Processes·during·Startup</span> | 181 | ··<span·class="text">Synchronizing·Processes·during·Startup</span> |
| 182 | </h2> | 182 | </h2> |
| 183 | <p>The·supervisor·tree·of·an·included·application·is·started·as·part·of·the | 183 | <p>The·supervisor·tree·of·an·included·application·is·started·as·part·of·the |
| 184 | supervisor·tree·of·the·including·application.·If·there·is·a·need·for | 184 | supervisor·tree·of·the·including·application.·If·there·is·a·need·for |
| 185 | synchronization·between·processes·in·the·including·and·included·applications, | 185 | synchronization·between·processes·in·the·including·and·included·applications, |
| 186 | this·can·be·achieved·by·using·<em>start·phases</em>.</p><p>Start·phases·are·defined·by·the·<code·class="inline">start_phases</code>·key·in·the·<code·class="inline">.app</code>·file·as·a·list | 186 | this·can·be·achieved·by·using·<em>start·phases</em>.</p><p>Start·phases·are·defined·by·the·<code·class="inline">start_phases</code>·key·in·the·<code·class="inline">.app</code>·file·as·a·list |
| 187 | of·tuples·<code·class="inline">{Phase,PhaseArgs}</code>,·where·<code·class="inline">Phase</code>·is·an·atom·and·<code·class="inline">PhaseArgs</code>·is·a | 187 | of·tuples·<code·class="inline">{Phase,PhaseArgs}</code>,·where·<code·class="inline">Phase</code>·is·an·atom·and·<code·class="inline">PhaseArgs</code>·is·a |
| 188 | term.</p><p>The·value·of·the·<code·class="inline">mod</code>·key·of·the·including·application·must·be·set·to | 188 | term.</p><p>The·value·of·the·<code·class="inline">mod</code>·key·of·the·including·application·must·be·set·to |
| 189 | <code·class="inline">{application_starter,[Module,StartArgs]}</code>,·where·<code·class="inline">Module</code>·as·usual·is·the | 189 | <code·class="inline">{application_starter,[Module,StartArgs]}</code>,·where·<code·class="inline">Module</code>·as·usual·is·the |
| 190 | application·callback·module.·<code·class="inline">StartArgs</code>·is·a·term·provided·as·argument·to·the | 190 | application·callback·module.·<code·class="inline">StartArgs</code>·is·a·term·provided·as·argument·to·the |
| 191 | callback·function·<code·class="inline">Module:start/2</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="2 | 191 | callback·function·<code·class="inline">Module:start/2</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="2324037179-1">{</span><span·class="ss">application</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">prim_app</span><span·class="p">,</span><span·class="w"> |
| 192 | ·</span><span·class="p"·data-group-id="2 | 192 | ·</span><span·class="p"·data-group-id="2324037179-2">[</span><span·class="p"·data-group-id="2324037179-3">{</span><span·class="ss">description</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"Tree·application"</span><span·class="p"·data-group-id="2324037179-3">}</span><span·class="p">,</span><span·class="w"> |
| 193 | ··</span><span·class="p"·data-group-id="2 | 193 | ··</span><span·class="p"·data-group-id="2324037179-4">{</span><span·class="ss">vsn</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"1"</span><span·class="p"·data-group-id="2324037179-4">}</span><span·class="p">,</span><span·class="w"> |
| 194 | ··</span><span·class="p"·data-group-id="2 | 194 | ··</span><span·class="p"·data-group-id="2324037179-5">{</span><span·class="ss">modules</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2324037179-6">[</span><span·class="ss">prim_app_cb</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">pri[·...·truncated·by·diffoscope;·len:·197,·SHA:·c1c7f76771e1d314d454ca7df2a492436409c6fe943acd0d82801ce96f6c0f54·...·]-5">}</span><span·class="p">,</span><span·class="w"> |
| 195 | ··</span><span·class="p"·data-group-id="2 | 195 | ··</span><span·class="p"·data-group-id="2324037179-7">{</span><span·class="ss">registered</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2324037179-8">[</span><span·class="ss">prim_app_server</span><span·class="p"·data-group-id="2324037179-8">]</span><span·cl[·...·truncated·by·diffoscope;·len:·33,·SHA:·6d579707d21187af920821954acc3ca70f5650778b41a360d2d7f363082fa960·...·]-7">}</span><span·class="p">,</span><span·class="w"> |
| 196 | ··</span><span·class="p"·data-group-id="2 | 196 | ··</span><span·class="p"·data-group-id="2324037179-9">{</span><span·class="ss">included_applications</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2324037179-10">[</span><span·class="ss">incl_app</span><span·class="p"·data-group-id="2324037179-10">]</span><s[·...·truncated·by·diffoscope;·len:·39,·SHA:·b4df5dca11cf124fac4eeb1bafd5d5aa6e77c273329bc671dfffc2457879122a·...·]-9">}</span><span·class="p">,</span><span·class="w"> |
| 197 | ··</span><span·class="p"·data-group-id="2 | 197 | ··</span><span·class="p"·data-group-id="2324037179-11">{</span><span·class="ss">start_phases</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2324037179-12">[</span><span·class="p"·data-group-id="2324037179-13">{</span><span·class="ss">init</span><span·class="p[·...·truncated·by·diffoscope;·len:·581,·SHA:·152def7b1602446967bb8b80f64bccdf60a702b4c9c95a8be8ddcfaa3744f3de·...·]-11">}</span><span·class="p">,</span><span·class="w"> |
| 198 | ··</span><span·class="p"·data-group-id="2 | 198 | ··</span><span·class="p"·data-group-id="2324037179-17">{</span><span·class="ss">applications</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2324037179-18">[</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">s[·...·truncated·by·diffoscope;·len:·183,·SHA:·72b76edc4fbc9496c5d197a089d1fa6e265f3d3de86fe0cddf3258ef76ced718·...·]-17">}</span><span·class="p">,</span><span·class="w"> |
| 199 | ··</span><span·class="p"·data-group-id="2 | 199 | ··</span><span·class="p"·data-group-id="2324037179-19">{</span><span·class="ss">mod</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2324037179-20">{</span><span·class="ss">application_starter</span><span·class="p">,</span><span·class="p"·data-group-id="2324037[·...·truncated·by·diffoscope;·len:·332,·SHA:·ae871d2a8d77609a1291fca2df958190fde6bac1478fc0201ae172a55fde5c37·...·]-19">}</span><span·class="p">,</span><span·class="w"> |
| 200 | ··</span><span·class="p"·data-group-id="2 | 200 | ··</span><span·class="p"·data-group-id="2324037179-23">{</span><span·class="ss">env</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2324037179-24">[</span><span·class="p"·data-group-id="2324037179-25">{</span><span·class="ss">file</span><span·class="p">,</span[·...·truncated·by·diffoscope;·len:·223,·SHA:·c27078ea4aee6a8c1be9c911ab4398afa23b9fa3ab7dd735b3871e8943daa9b4·...·]-23">}</span><span·class="w"> |
| 201 | ·</span><span·class="p"·data-group-id="2 | 201 | ·</span><span·class="p"·data-group-id="2324037179-2">]</span><span·class="p"·data-group-id="2324037179-1">}</span><span·class="p">.</span><span·class="w"> |
| 202 | </span><span·class="p"·data-group-id="2 | 202 | </span><span·class="p"·data-group-id="2324037179-26">{</span><span·class="ss">application</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">incl_app</span><span·class="p">,</span><span·class="w"> |
| 203 | ·</span><span·class="p"·data-group-id="2 | 203 | ·</span><span·class="p"·data-group-id="2324037179-27">[</span><span·class="p"·data-group-id="2324037179-28">{</span><span·class="ss">description</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"Included·application"</span><span·class="p"·data-group-id="2324037179-28">}</span><span·class="p">,</span><span·class="w"> |
| 204 | ··</span><span·class="p"·data-group-id="2 | 204 | ··</span><span·class="p"·data-group-id="2324037179-29">{</span><span·class="ss">vsn</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"1"</span><span·class="p"·data-group-id="2324037179-29">}</span><span·class="p">,</span><span·class="w"> |
| 205 | ··</span><span·class="p"·data-group-id="2 | 205 | ··</span><span·class="p"·data-group-id="2324037179-30">{</span><span·class="ss">modules</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2324037179-31">[</span><span·class="ss">incl_app_cb</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">i[·...·truncated·by·diffoscope;·len:·200,·SHA:·e4dbc6422d6c59b8b50f28db7119bd92eb3462e55b5220558f344496aa22ef44·...·]-30">}</span><span·class="p">,</span><span·class="w"> |
| 206 | ··</span><span·class="p"·data-group-id="2 | 206 | ··</span><span·class="p"·data-group-id="2324037179-32">{</span><span·class="ss">registered</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2324037179-33">[</span><span·class="p"·data-group-id="2324037179-33">]</span><span·class="p"·data-group-id="2324037179-32">}</span><span·class="p">,</span><span·class="w"> |
| 207 | ··</span><span·class="p"·data-group-id="2 | 207 | ··</span><span·class="p"·data-group-id="2324037179-34">{</span><span·class="ss">start_phases</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2324037179-35">[</span><span·class="p"·data-group-id="2324037179-36">{</span><span·class="ss">go</span><span·class="p">[·...·truncated·by·diffoscope;·len:·265,·SHA:·c53e1044bb22ff0e2cb5f2995770ab014cc93c7ff152a71b20adf49d31e35366·...·]-34">}</span><span·class="p">,</span><span·class="w"> |
| 208 | ··</span><span·class="p"·data-group-id="2 | 208 | ··</span><span·class="p"·data-group-id="2324037179-38">{</span><span·class="ss">applications</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2324037179-39">[</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">s[·...·truncated·by·diffoscope;·len:·183,·SHA:·503a24f189f07d1864170b5529ba250a1e570f3e740a3525dc58b392e1a02f86·...·]-38">}</span><span·class="p">,</span><span·class="w"> |
| 209 | ··</span><span·class="p"·data-group-id="2 | 209 | ··</span><span·class="p"·data-group-id="2324037179-40">{</span><span·class="ss">mod</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2324037179-41">{</span><span·class="ss">incl_app_cb</span><span·class="p">,</span><span·class="p"·data-group-id="2324037179-42">[·...·truncated·by·diffoscope;·len:·157,·SHA:·13cd3a5d582704bc4b2fc91a867c9e404af63570a3fc7e9ac084426e15bc1f37·...·]-40">}</span><span·class="w"> |
| 210 | ·</span><span·class="p"·data-group-id="2 | 210 | ·</span><span·class="p"·data-group-id="2324037179-27">]</span><span·class="p"·data-group-id="2324037179-26">}</span><span·class="p">.</span></code></pre><p>When·starting·a·primary·application·with·included·applications,·the·primary |
| 211 | application·is·started·the·normal·way,·that·is:</p><ul><li>The·application·controller·creates·an·application·master·for·the·application</li><li>The·application·master·calls·<code·class="inline">Module:start(normal,·StartArgs)</code>·to·start·the | 211 | application·is·started·the·normal·way,·that·is:</p><ul><li>The·application·controller·creates·an·application·master·for·the·application</li><li>The·application·master·calls·<code·class="inline">Module:start(normal,·StartArgs)</code>·to·start·the |
| 212 | top·supervisor.</li></ul><p>Then,·for·the·primary·application·and·each·included·application·in·top-down, | 212 | top·supervisor.</li></ul><p>Then,·for·the·primary·application·and·each·included·application·in·top-down, |
| 213 | left-to-right·order,·the·application·master·calls | 213 | left-to-right·order,·the·application·master·calls |
| 214 | <code·class="inline">Module:start_phase(Phase,·Type,·PhaseArgs)</code>·for·each·phase·defined·for·the | 214 | <code·class="inline">Module:start_phase(Phase,·Type,·PhaseArgs)</code>·for·each·phase·defined·for·the |
| 215 | primary·application,·in·that·order.·If·a·phase·is·not·defined·for·an·included | 215 | primary·application,·in·that·order.·If·a·phase·is·not·defined·for·an·included |
| 216 | application,·the·function·is·not·called·for·this·phase·and·application.</p><p>The·following·requirements·apply·to·the·<code·class="inline">.app</code>·file·for·an·included·application:</p><ul><li>The·<code·class="inline">{mod,·{Module,StartArgs}}</code>·option·must·be·included.·This·option·is·used | 216 | application,·the·function·is·not·called·for·this·phase·and·application.</p><p>The·following·requirements·apply·to·the·<code·class="inline">.app</code>·file·for·an·included·application:</p><ul><li>The·<code·class="inline">{mod,·{Module,StartArgs}}</code>·option·must·be·included.·This·option·is·used |
| 217 | to·find·the·callback·module·<code·class="inline">Module</code>·of·the·application.·<code·class="inline">StartArgs</code>·is | 217 | to·find·the·callback·module·<code·class="inline">Module</code>·of·the·application.·<code·class="inline">StartArgs</code>·is |
| 218 | ignored,·as·<code·class="inline">Module:start/2</code>·is·called·only·for·the·primary·application.</li><li>If·the·included·application·itself·contains·included·applications,·instead·the | 218 | ignored,·as·<code·class="inline">Module:start/2</code>·is·called·only·for·the·primary·application.</li><li>If·the·included·application·itself·contains·included·applications,·instead·the |
| 219 | <code·class="inline">{mod,·{application_starter,·[Module,StartArgs]}}</code>·option·must·be·included.</li><li>The·<code·class="inline">{start_phases,·[{Phase,PhaseArgs}]}</code>·option·must·be·included,·and·the·set | 219 | <code·class="inline">{mod,·{application_starter,·[Module,StartArgs]}}</code>·option·must·be·included.</li><li>The·<code·class="inline">{start_phases,·[{Phase,PhaseArgs}]}</code>·option·must·be·included,·and·the·set |
| 220 | of·specified·phases·must·be·a·subset·of·the·set·of·phases·specified·for·the | 220 | of·specified·phases·must·be·a·subset·of·the·set·of·phases·specified·for·the |
| 221 | primary·application.</li></ul><p>When·starting·<code·class="inline">prim_app</code>·as·defined·above,·the·application·controller·calls·the | 221 | primary·application.</li></ul><p>When·starting·<code·class="inline">prim_app</code>·as·defined·above,·the·application·controller·calls·the |
| 222 | following·callback·functions·before·<code·class="inline">application:start(prim_app)</code>·returns·a | 222 | following·callback·functions·before·<code·class="inline">application:start(prim_app)</code>·returns·a |
| 223 | value:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">application</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 223 | value:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">application</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="9009510752-1">(</span><span·class="ss">prim_app</span><span·class="p"·data-group-id="9009510752-1">)</span><span·class="w"> |
| 224 | ·</span><span·class="p">=></span><span·class="w">·</span><span·class="nc">prim_app_cb</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 224 | ·</span><span·class="p">=></span><span·class="w">·</span><span·class="nc">prim_app_cb</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="9009510752-2">(</span><span·class="ss">normal</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9009510752-3">[</span><span·class="p"·data-group-id="9009510752-3">]</span><span·class="p"·data-group-id="9009510752-2">)</span><span·class="w"> |
| 225 | ·</span><span·class="p">=></span><span·class="w">·</span><span·class="nc">prim_app_cb</span><span·class="p">:</span><span·class="nf">start_phase</span><span·class="p"·data-group-id=" | 225 | ·</span><span·class="p">=></span><span·class="w">·</span><span·class="nc">prim_app_cb</span><span·class="p">:</span><span·class="nf">start_phase</span><span·class="p"·data-group-id="9009510752-4">(</span><span·class="ss">init</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">normal</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9009510752-5">[</span><span·class="p"·data-group-[·...·truncated·by·diffoscope;·len:·67,·SHA:·00cd57f007a473f8cd832643f410939e3b30a9c98dfdbfe696b18f3bbb05f2c7·...·]-4">)</span><span·class="w"> |
| 226 | ·</span><span·class="p">=></span><span·class="w">·</span><span·class="nc">prim_app_cb</span><span·class="p">:</span><span·class="nf">start_phase</span><span·class="p"·data-group-id=" | 226 | ·</span><span·class="p">=></span><span·class="w">·</span><span·class="nc">prim_app_cb</span><span·class="p">:</span><span·class="nf">start_phase</span><span·class="p"·data-group-id="9009510752-6">(</span><span·class="ss">go</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">normal</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9009510752-7">[</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·65,·SHA:·065f448375ec0571573dca65ef66f8fd304d25e1cf4c43f57fdedf6be256ac56·...·]-6">)</span><span·class="w"> |
| 227 | ·</span><span·class="p">=></span><span·class="w">·</span><span·class="nc">incl_app_cb</span><span·class="p">:</span><span·class="nf">start_phase</span><span·class="p"·data-group-id=" | 227 | ·</span><span·class="p">=></span><span·class="w">·</span><span·class="nc">incl_app_cb</span><span·class="p">:</span><span·class="nf">start_phase</span><span·class="p"·data-group-id="9009510752-8">(</span><span·class="ss">go</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">normal</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9009510752-9">[</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·65,·SHA:·3a82b3043cfbf756d607eafca326e5b53e5e86885977b1a1d6b5d8dc253e5e2a·...·]-8">)</span><span·class="w"> |
| 228 | </span><span·class="ss">ok</span></code></pre> | 228 | </span><span·class="ss">ok</span></code></pre> |
| 229 | </div> | 229 | </div> |
| 230 | <div·class="bottom-actions"·id="bottom-actions"> | 230 | <div·class="bottom-actions"·id="bottom-actions"> |
| 231 | ··<div·class="bottom-actions-item"> | 231 | ··<div·class="bottom-actions-item"> |
| 232 | ······<a·href="applications.html"·class="bottom-actions-button"·rel="prev"> | 232 | ······<a·href="applications.html"·class="bottom-actions-button"·rel="prev"> |
| Offset 295, 15 lines modified | Offset 295, 15 lines modified | ||
| 295 | </span><span·class="gp·unselectable">$·</span><span·class="">cd·erts/emulator | 295 | </span><span·class="gp·unselectable">$·</span><span·class="">cd·erts/emulator |
| 296 | </span><span·class="gp·unselectable">$·</span><span·class="">make·debug | 296 | </span><span·class="gp·unselectable">$·</span><span·class="">make·debug |
| 297 | </span><span·class="gp·unselectable">$·</span><span·class="">cd·../etc | 297 | </span><span·class="gp·unselectable">$·</span><span·class="">cd·../etc |
| 298 | </span><span·class="gp·unselectable">$·</span><span·class="">make·debug | 298 | </span><span·class="gp·unselectable">$·</span><span·class="">make·debug |
| 299 | </span></code></pre><p>and·sometimes</p><pre><code·class="makeup·shell"·translate="no"><span·class="gp·unselectable">$·</span><span·class="">cd·$ERL_TOP | 299 | </span></code></pre><p>and·sometimes</p><pre><code·class="makeup·shell"·translate="no"><span·class="gp·unselectable">$·</span><span·class="">cd·$ERL_TOP |
| 300 | </span><span·class="gp·unselectable">$·</span><span·class="">make·local_setup | 300 | </span><span·class="gp·unselectable">$·</span><span·class="">make·local_setup |
| 301 | </span></code></pre><p>So·now·when·you·run·<code·class="inline">$ERL_TOP/erl.exe</code>,·you·should·have·a·debug·compiled | 301 | </span></code></pre><p>So·now·when·you·run·<code·class="inline">$ERL_TOP/erl.exe</code>,·you·should·have·a·debug·compiled |
| 302 | emulator,·which·you·will·see·if·you·do·a:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">system_info</span><span·class="p"·data-group-id=" | 302 | emulator,·which·you·will·see·if·you·do·a:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">system_info</span><span·class="p"·data-group-id="4007382784-1">(</span><span·class="ss">system_version</span><span·class="p"·data-group-id="4007382784-1">)</span><span·class="p">.</span></code></pre><p>in·the·erlang·shell.·If·the·returned·string·contains·<code·class="inline">[debug]</code>,·you |
| 303 | got·a·debug·compiled·emulator.</p><p>To·hack·the·erlang·libraries,·you·simply·do·a·<code·class="inline">make·opt</code>·in·the | 303 | got·a·debug·compiled·emulator.</p><p>To·hack·the·erlang·libraries,·you·simply·do·a·<code·class="inline">make·opt</code>·in·the |
| 304 | specific·"applications"·directory,·like:</p><pre><code·class="makeup·shell"·translate="no"><span·class="gp·unselectable">$·</span><span·class="">cd·$ERL_TOP/lib/stdlib | 304 | specific·"applications"·directory,·like:</p><pre><code·class="makeup·shell"·translate="no"><span·class="gp·unselectable">$·</span><span·class="">cd·$ERL_TOP/lib/stdlib |
| 305 | </span><span·class="gp·unselectable">$·</span><span·class="">make·opt | 305 | </span><span·class="gp·unselectable">$·</span><span·class="">make·opt |
| 306 | </span></code></pre><p>or·even·in·the·source·directory...</p><pre><code·class="makeup·shell"·translate="no"><span·class="gp·unselectable">$·</span><span·class="">cd·$ERL_TOP/lib/stdlib/src | 306 | </span></code></pre><p>or·even·in·the·source·directory...</p><pre><code·class="makeup·shell"·translate="no"><span·class="gp·unselectable">$·</span><span·class="">cd·$ERL_TOP/lib/stdlib/src |
| 307 | </span><span·class="gp·unselectable">$·</span><span·class="">make·opt | 307 | </span><span·class="gp·unselectable">$·</span><span·class="">make·opt |
| 308 | </span></code></pre><p>Note·that·you're·expected·to·have·a·fresh·Erlang·in·your·path·when | 308 | </span></code></pre><p>Note·that·you're·expected·to·have·a·fresh·Erlang·in·your·path·when |
| 309 | doing·this,·preferably·the·plain·27·you·have·built·in·the·previous | 309 | doing·this,·preferably·the·plain·27·you·have·built·in·the·previous |
| Offset 318, 19 lines modified | Offset 318, 19 lines modified | ||
| 318 | </span><span·class="">:$ERL_TOP/erts/etc/win32/wsl_tools:$ERL_TOP/bootstrap/bin:$PATH | 318 | </span><span·class="">:$ERL_TOP/erts/etc/win32/wsl_tools:$ERL_TOP/bootstrap/bin:$PATH |
| 319 | </span></code></pre><p>That·should·make·it·possible·to·rebuild·any·library·without·hassle...</p><p>If·you·want·to·copy·a·library·(an·application)·newly·built,·to·a | 319 | </span></code></pre><p>That·should·make·it·possible·to·rebuild·any·library·without·hassle...</p><p>If·you·want·to·copy·a·library·(an·application)·newly·built,·to·a |
| 320 | release·area,·you·do·like·with·the·emulator:</p><pre><code·class="makeup·shell"·translate="no"><span·class="gp·unselectable">$·</span><span·class="">cd·$ERL_TOP/lib/stdlib | 320 | release·area,·you·do·like·with·the·emulator:</p><pre><code·class="makeup·shell"·translate="no"><span·class="gp·unselectable">$·</span><span·class="">cd·$ERL_TOP/lib/stdlib |
| 321 | </span><span·class="gp·unselectable">$·</span><span·class="">make·TESTROOT=/tmp/erlang_release·release | 321 | </span><span·class="gp·unselectable">$·</span><span·class="">make·TESTROOT=/tmp/erlang_release·release |
| 322 | </span></code></pre><p>Remember·that:</p><ul><li><p>··Windows·specific·C-code·goes·in·the·<code·class="inline">$ERL_TOP/erts/emulator/sys/win32</code>, | 322 | </span></code></pre><p>Remember·that:</p><ul><li><p>··Windows·specific·C-code·goes·in·the·<code·class="inline">$ERL_TOP/erts/emulator/sys/win32</code>, |
| 323 | <code·class="inline">$ERL_TOP/erts/emulator/drivers/win32</code>·or·<code·class="inline">$ERL_TOP/erts/etc/win32</code>.</p></li><li><p>··Windows·specific·erlang·code·should·be·used·conditionally·and·the | 323 | <code·class="inline">$ERL_TOP/erts/emulator/drivers/win32</code>·or·<code·class="inline">$ERL_TOP/erts/etc/win32</code>.</p></li><li><p>··Windows·specific·erlang·code·should·be·used·conditionally·and·the |
| 324 | host·OS·tested·in·<em>runtime</em>,·the·exactly·same·beam·files·should·be | 324 | host·OS·tested·in·<em>runtime</em>,·the·exactly·same·beam·files·should·be |
| 325 | distributed·for·every·platform!·So·write·code·like:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">case</span><span·class="w">·</span><span·class="nc">os</span><span·class="p">:</span><span·class="nf">type</span><span·class="p"·data-group-id=" | 325 | distributed·for·every·platform!·So·write·code·like:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">case</span><span·class="w">·</span><span·class="nc">os</span><span·class="p">:</span><span·class="nf">type</span><span·class="p"·data-group-id="1050979404-1">(</span><span·class="p"·data-group-id="1050979404-1">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 326 | ····</span><span·class="p"·data-group-id=" | 326 | ····</span><span·class="p"·data-group-id="1050979404-2">{</span><span·class="ss">win32</span><span·class="p">,</span><span·class="p">_</span><span·class="p"·data-group-id="1050979404-2">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 327 | ········</span><span·class="nf">do_windows_specific</span><span·class="p"·data-group-id=" | 327 | ········</span><span·class="nf">do_windows_specific</span><span·class="p"·data-group-id="1050979404-3">(</span><span·class="p"·data-group-id="1050979404-3">)</span><span·class="p">;</span><span·class="w"> |
| 328 | ····</span><span·class="n">Other</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 328 | ····</span><span·class="n">Other</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 329 | ········</span><span·class="nf">do_fallback_or_exit</span><span·class="p"·data-group-id=" | 329 | ········</span><span·class="nf">do_fallback_or_exit</span><span·class="p"·data-group-id="1050979404-4">(</span><span·class="p"·data-group-id="1050979404-4">)</span><span·class="w"> |
| 330 | </span><span·class="k">end</span><span·class="p">,</span></code></pre></li></ul><p>That's·basically·all·you·need·to·get·going.</p><h2·id="frequently-asked-questions"·class="section-heading"> | 330 | </span><span·class="k">end</span><span·class="p">,</span></code></pre></li></ul><p>That's·basically·all·you·need·to·get·going.</p><h2·id="frequently-asked-questions"·class="section-heading"> |
| 331 | ··<a·href="#frequently-asked-questions"·class="hover-link"> | 331 | ··<a·href="#frequently-asked-questions"·class="hover-link"> |
| 332 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 332 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 333 | ··</a> | 333 | ··</a> |
| 334 | ··<span·class="text">Frequently·Asked·Questions</span> | 334 | ··<span·class="text">Frequently·Asked·Questions</span> |
| 335 | </h2> | 335 | </h2> |
| 336 | <ul><li><p>··Q:·So,·now·I·can·build·Erlang·using·GCC·on·Windows?</p><p>A:·No,·unfortunately·not.·You'll·need·Microsoft's·Visual·C++ | 336 | <ul><li><p>··Q:·So,·now·I·can·build·Erlang·using·GCC·on·Windows?</p><p>A:·No,·unfortunately·not.·You'll·need·Microsoft's·Visual·C++ |
| Offset 117, 33 lines modified | Offset 117, 33 lines modified | ||
| 117 | <h2·id="simple-examples"·class="section-heading"> | 117 | <h2·id="simple-examples"·class="section-heading"> |
| 118 | ··<a·href="#simple-examples"·class="hover-link"> | 118 | ··<a·href="#simple-examples"·class="hover-link"> |
| 119 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 119 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 120 | ··</a> | 120 | ··</a> |
| 121 | ··<span·class="text">Simple·Examples</span> | 121 | ··<span·class="text">Simple·Examples</span> |
| 122 | </h2> | 122 | </h2> |
| 123 | <p>This·section·starts·with·a·simple·example,·showing·a·generator·and·a·filter:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="p"·data-group-id="3 | 123 | <p>This·section·starts·with·a·simple·example,·showing·a·generator·and·a·filter:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="p"·data-group-id="3568643630-1">[</span><span·class="n">X</span><span·class="w">·</span><span·class="p">||</span><span·class="w">·</span><span·class="n">X</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="p"·data-group-id="3568643[·...·truncated·by·diffoscope;·len:·649,·SHA:·f8329e14f4d5f66c181f6104925fb916caf14b192e6538ad1e6288571a9fc1c0·...·]-1">]</span><span·class="p">.</span><span·class="w"> |
| 124 | </span><span·class="p"·data-group-id="3 | 124 | </span><span·class="p"·data-group-id="3568643630-3">[</span><span·class="ss">a</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="ss">b</span><span·class="p">,</span><span·class="mi">5</span><span·class="p">,</span><span·class="mi">6</span><span·class="p[·...·truncated·by·diffoscope;·len:·27,·SHA:·779883b33b32aea819168045235df19e9a34e69051ea89009a28a943a40affc5·...·]-3">]</span></code></pre><p>This·is·read·as·follows:·The·list·of·X·such·that·X·is·taken·from·the·list |
| 125 | <code·class="inline">[1,2,a,...]</code>·and·X·is·greater·than·3.</p><p>The·notation·<code·class="inline">X·<-·[1,2,a,...]</code>·is·a·generator·and·the·expression·<code·class="inline">X·>·3</code>·is·a | 125 | <code·class="inline">[1,2,a,...]</code>·and·X·is·greater·than·3.</p><p>The·notation·<code·class="inline">X·<-·[1,2,a,...]</code>·is·a·generator·and·the·expression·<code·class="inline">X·>·3</code>·is·a |
| 126 | filter.</p><p>An·additional·filter,·<a·href="../../erts-15.2.3/doc/html/erlang.html#is_integer/1"><code·class="inline">is_integer(X)</code></a>,·can·be·added·to | 126 | filter.</p><p>An·additional·filter,·<a·href="../../erts-15.2.3/doc/html/erlang.html#is_integer/1"><code·class="inline">is_integer(X)</code></a>,·can·be·added·to |
| 127 | restrict·the·result·to·integers:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="p"·data-group-id="87 | 127 | restrict·the·result·to·integers:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="p"·data-group-id="9878407946-1">[</span><span·class="n">X</span><span·class="w">·</span><span·class="p">||</span><span·class="w">·</span><span·class="n">X</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="p"·data-group-id="987840[·...·truncated·by·diffoscope;·len:·861,·SHA:·7ab940c9c825de9723d0940e397bd99a2d00416e424bf498d515571115e09e2d·...·]6-1">]</span><span·class="p">.</span><span·class="w"> |
| 128 | </span><span·class="p"·data-group-id="87 | 128 | </span><span·class="p"·data-group-id="9878407946-4">[</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">5</span><span·class="p">,</span><span·class="mi">6</span><span·class="p"·data-group-id="9878407946-4">]</span></code></pre><p>Generators·can·be·combined.·For·example,·the·Cartesian·product·of·two·lists·can |
| 129 | be·written·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="p"·data-group-id=" | 129 | be·written·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="p"·data-group-id="3884351416-1">[</span><span·class="p"·data-group-id="3884351416-2">{</span><span·class="n">X</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Y</span><span·class="p"·data-group-id="3884351416-2">}</span><span·class="w">·</span><span·cl[·...·truncated·by·diffoscope;·len:·739,·SHA:·f2a72124981174b9e3461f5eb070dce37329d6ce5b45028b4cfd7bd0b4d4b0f7·...·]-1">]</span><span·class="p">.</span><span·class="w"> |
| 130 | </span><span·class="p"·data-group-id=" | 130 | </span><span·class="p"·data-group-id="3884351416-5">[</span><span·class="p"·data-group-id="3884351416-6">{</span><span·class="mi">1</span><span·class="p">,</span><span·class="ss">a</span><span·class="p"·data-group-id="3884351416-6">}</span><span·class="p">,</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·1011,·SHA:·6b0c28ec1ee98a9743aa06a9dffedcef18302483c75cb3a305ed0ee4ecc00b16·...·]-5">]</span></code></pre><h2·id="quick-sort"·class="section-heading"> |
| 131 | ··<a·href="#quick-sort"·class="hover-link"> | 131 | ··<a·href="#quick-sort"·class="hover-link"> |
| 132 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 132 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 133 | ··</a> | 133 | ··</a> |
| 134 | ··<span·class="text">Quick·Sort</span> | 134 | ··<span·class="text">Quick·Sort</span> |
| 135 | </h2> | 135 | </h2> |
| 136 | <p>The·well-known·quick·sort·routine·can·be·written·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">sort</span><span·class="p"·data-group-id=" | 136 | <p>The·well-known·quick·sort·routine·can·be·written·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">sort</span><span·class="p"·data-group-id="4706690918-1">(</span><span·class="p"·data-group-id="4706690918-2">[</span><span·class="p"·data-group-id="4706690918-2">]</span><span·class="p"·data-group-id="4706690918-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span[·...·truncated·by·diffoscope;·len:·95,·SHA:·519f69afa8f7feacc9451b7ba52db032059d06465fa3c3d032c224134ff74d8f·...·]-3">]</span><span·class="p">;</span><span·class="w"> |
| 137 | </span><span·class="nf">sort</span><span·class="p"·data-group-id=" | 137 | </span><span·class="nf">sort</span><span·class="p"·data-group-id="4706690918-4">(</span><span·class="p"·data-group-id="4706690918-5">[</span><span·class="p">_</span><span·class="p"·data-group-id="4706690918-5">]</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">L</span><span·cl[·...·truncated·by·diffoscope;·len:·33,·SHA:·3942cda762a7a5866bffd04b43a0fccaf1fc0046acaec4572e240f7189dfc237·...·]-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">L</span><span·class="p">;</span><span·class="w"> |
| 138 | </span><span·class="nf">sort</span><span·class="p"·data-group-id=" | 138 | </span><span·class="nf">sort</span><span·class="p"·data-group-id="4706690918-6">(</span><span·class="p"·data-group-id="4706690918-7">[</span><span·class="n">Pivot</span><span·class="p">|</span><span·class="n">T</span><span·class="p"·data-group-id="4706690918-7">]</span><span·class="p"·data-group-id="4706690918-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 139 | ····</span><span·class="nf">sort</span><span·class="p"·data-group-id=" | 139 | ····</span><span·class="nf">sort</span><span·class="p"·data-group-id="4706690918-8">(</span><span·class="p"·data-group-id="4706690918-9">[</span><span·class="w">·</span><span·class="n">X</span><span·class="w">·</span><span·class="p">||</span><span·class="w">·</span><span·class="n">X</span><span·class="w">·</span><span·class=[·...·truncated·by·diffoscope;·len:·333,·SHA:·44f4ef1ff438dd8cd4bf4a45c372b4f6e18d8f828b377bdee7abd4373a6cf3ae·...·]-8">)</span><span·class="w">·</span><span·class="o">++</span><span·class="w"> |
| 140 | ····</span><span·class="p"·data-group-id=" | 140 | ····</span><span·class="p"·data-group-id="4706690918-10">[</span><span·class="n">Pivot</span><span·class="p"·data-group-id="4706690918-10">]</span><span·class="w">·</span><span·class="o">++</span><span·class="w"> |
| 141 | ····</span><span·class="nf">sort</span><span·class="p"·data-group-id=" | 141 | ····</span><span·class="nf">sort</span><span·class="p"·data-group-id="4706690918-11">(</span><span·class="p"·data-group-id="4706690918-12">[</span><span·class="w">·</span><span·class="n">X</span><span·class="w">·</span><span·class="p">||</span><span·class="w">·</span><span·class="n">X</span><span·class="w">·</span><span·clas[·...·truncated·by·diffoscope;·len:·337,·SHA:·676be9da3c6141b06113c48a4a87365aab957b6920f536e6620248ce87bbc164·...·]-11">)</span><span·class="p">.</span></code></pre><p>The·expression·<code·class="inline">[X·||·X·<-·T,·X·<·Pivot]</code>·is·the·list·of·all·elements·in·<code·class="inline">T</code> |
| 142 | that·are·less·than·<code·class="inline">Pivot</code>.</p><p><code·class="inline">[X·||·X·<-·T,·X·>=·Pivot]</code>·is·the·list·of·all·elements·in·<code·class="inline">T</code>·that·are·greater | 142 | that·are·less·than·<code·class="inline">Pivot</code>.</p><p><code·class="inline">[X·||·X·<-·T,·X·>=·Pivot]</code>·is·the·list·of·all·elements·in·<code·class="inline">T</code>·that·are·greater |
| 143 | than·or·equal·to·<code·class="inline">Pivot</code>.</p><p>With·the·algorithm·above,·a·list·is·sorted·as·follows:</p><ul><li>A·list·with·zero·or·one·element·is·trivially·sorted.</li><li>For·lists·with·more·than·one·element:<ol><li>The·first·element·in·the·list·is·isolated·as·the·pivot·element.</li><li>The·remaining·list·is·partitioned·into·two·sublists,·such·that:</li></ol><ul><li>The·first·sublist·contains·all·elements·that·are·smaller·than·the·pivot | 143 | than·or·equal·to·<code·class="inline">Pivot</code>.</p><p>With·the·algorithm·above,·a·list·is·sorted·as·follows:</p><ul><li>A·list·with·zero·or·one·element·is·trivially·sorted.</li><li>For·lists·with·more·than·one·element:<ol><li>The·first·element·in·the·list·is·isolated·as·the·pivot·element.</li><li>The·remaining·list·is·partitioned·into·two·sublists,·such·that:</li></ol><ul><li>The·first·sublist·contains·all·elements·that·are·smaller·than·the·pivot |
| 144 | element.</li><li>The·second·sublist·contains·all·elements·that·are·greater·than·or·equal·to | 144 | element.</li><li>The·second·sublist·contains·all·elements·that·are·greater·than·or·equal·to |
| 145 | the·pivot·element.</li></ul><ol><li>The·sublists·are·recursively·sorted·by·the·same·algorithm·and·the·results | 145 | the·pivot·element.</li></ul><ol><li>The·sublists·are·recursively·sorted·by·the·same·algorithm·and·the·results |
| 146 | are·combined,·resulting·in·a·list·consisting·of:</li></ol><ul><li>All·elements·from·the·first·sublist,·that·is·all·elements·smaller·than·the | 146 | are·combined,·resulting·in·a·list·consisting·of:</li></ol><ul><li>All·elements·from·the·first·sublist,·that·is·all·elements·smaller·than·the |
| 147 | pivot·element,·in·sorted·order.</li><li>The·pivot·element.</li><li>All·elements·from·the·second·sublist,·that·is·all·elements·greater·than·or | 147 | pivot·element,·in·sorted·order.</li><li>The·pivot·element.</li><li>All·elements·from·the·second·sublist,·that·is·all·elements·greater·than·or |
| 148 | equal·to·the·pivot·element,·in·sorted·order.</li></ul></li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>While·the·sorting·algorithm·as·shown·above·serves·as·a·nice·example·to | 148 | equal·to·the·pivot·element,·in·sorted·order.</li></ul></li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>While·the·sorting·algorithm·as·shown·above·serves·as·a·nice·example·to |
| Offset 151, 93 lines modified | Offset 151, 93 lines modified | ||
| 151 | <a·href="../../lib/stdlib-6.2.1/doc/html/lists.html"><code·class="inline">lists</code></a>·module·contains·sorting·functions·that·are·implemented·in·a·more | 151 | <a·href="../../lib/stdlib-6.2.1/doc/html/lists.html"><code·class="inline">lists</code></a>·module·contains·sorting·functions·that·are·implemented·in·a·more |
| 152 | efficient·way.</p></section><h2·id="permutations"·class="section-heading"> | 152 | efficient·way.</p></section><h2·id="permutations"·class="section-heading"> |
| 153 | ··<a·href="#permutations"·class="hover-link"> | 153 | ··<a·href="#permutations"·class="hover-link"> |
| 154 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 154 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 155 | ··</a> | 155 | ··</a> |
| 156 | ··<span·class="text">Permutations</span> | 156 | ··<span·class="text">Permutations</span> |
| 157 | </h2> | 157 | </h2> |
| 158 | <p>The·following·example·generates·all·permutations·of·the·elements·in·a·list:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">perms</span><span·class="p"·data-group-id="5 | 158 | <p>The·following·example·generates·all·permutations·of·the·elements·in·a·list:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">perms</span><span·class="p"·data-group-id="5157021728-1">(</span><span·class="p"·data-group-id="5157021728-2">[</span><span·class="p"·data-group-id="5157021728-2">]</span><span·class="p"·data-group-id="5157021728-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span>[·...·truncated·by·diffoscope;·len:·200,·SHA:·7a8e96d7e1259830582537103564828d7d37bc7c6c8ede3759054aadf112d237·...·]-3">]</span><span·class="p">;</span><span·class="w"> |
| 159 | </span><span·class="nf">perms</span><span·class="p"·data-group-id="5 | 159 | </span><span·class="nf">perms</span><span·class="p"·data-group-id="5157021728-5">(</span><span·class="n">L</span><span·class="p"·data-group-id="5157021728-5">)</span><span·class="w">··</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="5157021728-6">[</span><span·class="p"·data-group-i[·...·truncated·by·diffoscope;·len:·850,·SHA:·5fa3af767870406ef9659d86e41f0eb9090361c3c27e43c439449d9765be0248·...·]-6">]</span><span·class="p">.</span></code></pre><p>This·takes·<code·class="inline">H</code>·from·<code·class="inline">L</code>·in·all·possible·ways.·The·result·is·the·set·of·all·lists |
| 160 | <code·class="inline">[H|T]</code>,·where·<code·class="inline">T</code>·is·the·set·of·all·possible·permutations·of·<code·class="inline">L</code>,·with·<code·class="inline">H</code> | 160 | <code·class="inline">[H|T]</code>,·where·<code·class="inline">T</code>·is·the·set·of·all·possible·permutations·of·<code·class="inline">L</code>,·with·<code·class="inline">H</code> |
| 161 | removed:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nf">perms</span><span·class="p"·data-group-id=" | 161 | removed:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nf">perms</span><span·class="p"·data-group-id="3864191459-1">(</span><span·class="p"·data-group-id="3864191459-2">[</span><span·class="ss">b</span><span·class="p">,</span><span·class="ss">u</span><span·class="p">,</span><span·class="ss">g</span><span·class="p"·data-group-id="3864191459-2">]</span><span[·...·truncated·by·diffoscope;·len:·36,·SHA:·0f8cf510e5293c5ab18f3f118b130fe852096c9cec097bc310e79387d46788b2·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 162 | </span><span·class="p"·data-group-id=" | 162 | </span><span·class="p"·data-group-id="3864191459-3">[</span><span·class="p"·data-group-id="3864191459-4">[</span><span·class="ss">b</span><span·class="p">,</span><span·class="ss">u</span><span·class="p">,</span><span·class="ss">g</span><span·class="p"·data-group-id="3864191459-4">]</span><span[·...·truncated·by·diffoscope;·len:·1301,·SHA:·58434f69e3eb89f04fc5156eb521ea7c89fdbf068a087aa0b803288581947aed·...·]-3">]</span></code></pre><h2·id="pythagorean-triplets"·class="section-heading"> |
| 163 | ··<a·href="#pythagorean-triplets"·class="hover-link"> | 163 | ··<a·href="#pythagorean-triplets"·class="hover-link"> |
| 164 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 164 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 165 | ··</a> | 165 | ··</a> |
| 166 | ··<span·class="text">Pythagorean·Triplets</span> | 166 | ··<span·class="text">Pythagorean·Triplets</span> |
| 167 | </h2> | 167 | </h2> |
| 168 | <p>Pythagorean·triplets·are·sets·of·integers·<code·class="inline">{A,B,C}</code>·such·that | 168 | <p>Pythagorean·triplets·are·sets·of·integers·<code·class="inline">{A,B,C}</code>·such·that |
| 169 | <code·class="inline">A**2·+·B**2·=·C**2</code>.</p><p>The·function·<code·class="inline">pyth(N)</code>·generates·a·list·of·all·integers·<code·class="inline">{A,B,C}</code>·such·that | 169 | <code·class="inline">A**2·+·B**2·=·C**2</code>.</p><p>The·function·<code·class="inline">pyth(N)</code>·generates·a·list·of·all·integers·<code·class="inline">{A,B,C}</code>·such·that |
| 170 | <code·class="inline">A**2·+·B**2·=·C**2</code>·and·where·the·sum·of·the·sides·is·equal·to,·or·less·than, | 170 | <code·class="inline">A**2·+·B**2·=·C**2</code>·and·where·the·sum·of·the·sides·is·equal·to,·or·less·than, |
| 171 | <code·class="inline">N</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">pyth</span><span·class="p"·data-group-id=" | 171 | <code·class="inline">N</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">pyth</span><span·class="p"·data-group-id="1852805199-1">(</span><span·class="n">N</span><span·class="p"·data-group-id="1852805199-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 172 | ····</span><span·class="p"·data-group-id=" | 172 | ····</span><span·class="p"·data-group-id="1852805199-2">[</span><span·class="w">·</span><span·class="p"·data-group-id="1852805199-3">{</span><span·class="n">A</span><span·class="p">,</span><span·class="n">B</span><span·class="p">,</span><span·class="n">C</span><span·class="p"·data-group-id="185280[·...·truncated·by·diffoscope;·len:·4,·SHA:·aced70051e58a8841d88279bded07894af517957690986ff6ceff4f11870ae3d·...·]-3">}</span><span·class="w">·</span><span·class="p">||</span><span·class="w"> |
| 173 | ········</span><span·class="n">A</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">seq</span><span·class="p"·data-group-id=" | 173 | ········</span><span·class="n">A</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">seq</span><span·class="p"·data-group-id="1852805199-4">(</span><span·class="mi">1</span><span·class="p">,</span><span·class="n">N</span><span·class="p"·data-group-id="1852805199-4">)</span><span·class="p">,</span><span·class="w"> |
| 174 | ········</span><span·class="n">B</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">seq</span><span·class="p"·data-group-id=" | 174 | ········</span><span·class="n">B</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">seq</span><span·class="p"·data-group-id="1852805199-5">(</span><span·class="mi">1</span><span·class="p">,</span><span·class="n">N</span><span·class="p"·data-group-id="1852805199-5">)</span><span·class="p">,</span><span·class="w"> |
| 175 | ········</span><span·class="n">C</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">seq</span><span·class="p"·data-group-id=" | 175 | ········</span><span·class="n">C</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">seq</span><span·class="p"·data-group-id="1852805199-6">(</span><span·class="mi">1</span><span·class="p">,</span><span·class="n">N</span><span·class="p"·data-group-id="1852805199-6">)</span><span·class="p">,</span><span·class="w"> |
| 176 | ········</span><span·class="n">A</span><span·class="o">+</span><span·class="n">B</span><span·class="o">+</span><span·class="n">C</span><span·class="w">·</span><span·class="o">=<</span><span·class="w">·</span><span·class="n">N</span><span·class="p">,</span><span·class="w"> | 176 | ········</span><span·class="n">A</span><span·class="o">+</span><span·class="n">B</span><span·class="o">+</span><span·class="n">C</span><span·class="w">·</span><span·class="o">=<</span><span·class="w">·</span><span·class="n">N</span><span·class="p">,</span><span·class="w"> |
| 177 | ········</span><span·class="n">A</span><span·class="o">*</span><span·class="n">A</span><span·class="o">+</span><span·class="n">B</span><span·class="o">*</span><span·class="n">B</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="n">C</span><span·class="o">*</span><span·class="n">C</span><span·class="w"> | 177 | ········</span><span·class="n">A</span><span·class="o">*</span><span·class="n">A</span><span·class="o">+</span><span·class="n">B</span><span·class="o">*</span><span·class="n">B</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="n">C</span><span·class="o">*</span><span·class="n">C</span><span·class="w"> |
| 178 | ····</span><span·class="p"·data-group-id=" | 178 | ····</span><span·class="p"·data-group-id="1852805199-2">]</span><span·class="p">.</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nf">pyth</span><span·class="p"·data-group-id="7003630489-1">(</span><span·class="mi">3</span><[·...·truncated·by·diffoscope;·len:·40,·SHA:·04df41f7bab0688719c719d6f6a0c84697173c1562487ee65a833a7c76272217·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 179 | </span><span·class="p"·data-group-id=" | 179 | </span><span·class="p"·data-group-id="7003630489-2">[</span><span·class="p"·data-group-id="7003630489-2">]</span><span·class="p">.</span><span·class="gp·unselectable"> |
| 180 | >·</span><span·class="nf">pyth</span><span·class="p"·data-group-id=" | 180 | >·</span><span·class="nf">pyth</span><span·class="p"·data-group-id="7003630489-3">(</span><span·class="mi">11</span><span·class="p"·data-group-id="7003630489-3">)</span><span·class="p">.</span><span·class="w"> |
| 181 | </span><span·class="p"·data-group-id=" | 181 | </span><span·class="p"·data-group-id="7003630489-4">[</span><span·class="p"·data-group-id="7003630489-4">]</span><span·class="p">.</span><span·class="gp·unselectable"> |
| 182 | >·</span><span·class="nf">pyth</span><span·class="p"·data-group-id=" | 182 | >·</span><span·class="nf">pyth</span><span·class="p"·data-group-id="7003630489-5">(</span><span·class="mi">12</span><span·class="p"·data-group-id="7003630489-5">)</span><span·class="p">.</span><span·class="w"> |
| 183 | </span><span·class="p"·data-group-id=" | 183 | </span><span·class="p"·data-group-id="7003630489-6">[</span><span·class="p"·data-group-id="7003630489-7">{</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">5</span><span·class="p"·data-group-id="7003630489-7">}</span><span[·...·truncated·by·diffoscope;·len:·289,·SHA:·53745d6f4d55500c4300c6fbc5ba26eb80c5c59d909932522308406c1090ed4d·...·]-6">]</span><span·class="gp·unselectable"> |
| 184 | >·</span><span·class="nf">pyth</span><span·class="p"·data-group-id=" | 184 | >·</span><span·class="nf">pyth</span><span·class="p"·data-group-id="7003630489-9">(</span><span·class="mi">50</span><span·class="p"·data-group-id="7003630489-9">)</span><span·class="p">.</span><span·class="w"> |
| 185 | </span><span·class="p"·data-group-id=" | 185 | </span><span·class="p"·data-group-id="7003630489-10">[</span><span·class="p"·data-group-id="7003630489-11">{</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">5</span><span·class="p"·data-group-id="7003630489-11">}</span><span·class="p">,</span><span·class="w"> |
| 186 | ·</span><span·class="p"·data-group-id=" | 186 | ·</span><span·class="p"·data-group-id="7003630489-12">{</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">5</span><span·class="p"·data-group-id="7003630489-12">}</span><span·class="p">,</span><span·class="w"> |
| 187 | ·</span><span·class="p"·data-group-id=" | 187 | ·</span><span·class="p"·data-group-id="7003630489-13">{</span><span·class="mi">5</span><span·class="p">,</span><span·class="mi">12</span><span·class="p">,</span><span·class="mi">13</span><span·class="p"·data-group-id="7003630489-13">}</span><span·class="p">,</span><span·class="w"> |
| 188 | ·</span><span·class="p"·data-group-id=" | 188 | ·</span><span·class="p"·data-group-id="7003630489-14">{</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">8</span><span·class="p">,</span><span·class="mi">10</span><span·class="p"·data-group-id="7003630489-14">}</span><span·class="p">,</span><span·class="w"> |
| 189 | ·</span><span·class="p"·data-group-id=" | 189 | ·</span><span·class="p"·data-group-id="7003630489-15">{</span><span·class="mi">8</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">10</span><span·class="p"·data-group-id="7003630489-15">}</span><span·class="p">,</span><span·class="w"> |
| 190 | ·</span><span·class="p"·data-group-id=" | 190 | ·</span><span·class="p"·data-group-id="7003630489-16">{</span><span·class="mi">8</span><span·class="p">,</span><span·class="mi">15</span><span·class="p">,</span><span·class="mi">17</span><span·class="p"·data-group-id="7003630489-16">}</span><span·class="p">,</span><span·class="w"> |
| 191 | ·</span><span·class="p"·data-group-id=" | 191 | ·</span><span·class="p"·data-group-id="7003630489-17">{</span><span·class="mi">9</span><span·class="p">,</span><span·class="mi">12</span><span·class="p">,</span><span·class="mi">15</span><span·class="p"·data-group-id="7003630489-17">}</span><span·class="p">,</span><span·class="w"> |
| 192 | ·</span><span·class="p"·data-group-id=" | 192 | ·</span><span·class="p"·data-group-id="7003630489-18">{</span><span·class="mi">12</span><span·class="p">,</span><span·class="mi">5</span><span·class="p">,</span><span·class="mi">13</span><span·class="p"·data-group-id="7003630489-18">}</span><span·class="p">,</span><span·class="w"> |
| 193 | ·</span><span·class="p"·data-group-id=" | 193 | ·</span><span·class="p"·data-group-id="7003630489-19">{</span><span·class="mi">12</span><span·class="p">,</span><span·class="mi">9</span><span·class="p">,</span><span·class="mi">15</span><span·class="p"·data-group-id="7003630489-19">}</span><span·class="p">,</span><span·class="w"> |
| 194 | ·</span><span·class="p"·data-group-id=" | 194 | ·</span><span·class="p"·data-group-id="7003630489-20">{</span><span·class="mi">12</span><span·class="p">,</span><span·class="mi">16</span><span·class="p">,</span><span·class="mi">20</span><span·class="p"·data-group-id="7003630489-20">}</span><span·class="p">,</span><span·class="w"> |
| 195 | ·</span><span·class="p"·data-group-id=" | 195 | ·</span><span·class="p"·data-group-id="7003630489-21">{</span><span·class="mi">15</span><span·class="p">,</span><span·class="mi">8</span><span·class="p">,</span><span·class="mi">17</span><span·class="p"·data-group-id="7003630489-21">}</span><span·class="p">,</span><span·class="w"> |
| 196 | ·</span><span·class="p"·data-group-id=" | 196 | ·</span><span·class="p"·data-group-id="7003630489-22">{</span><span·class="mi">16</span><span·class="p">,</span><span·class="mi">12</span><span·class="p">,</span><span·class="mi">20</span><span·class="p"·data-group-id="7003630489-22">}</span><span·class="p"·data-group-id="7003630489-10">]</span[·...·truncated·by·diffoscope;·len:·282,·SHA:·35be4bd2bac8b93fb0ed3392be4b4f6337c9de19772163e10a80220649fd5a10·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 197 | ···</span><span·class="p"·data-group-id=" | 197 | ···</span><span·class="p"·data-group-id="6626419449-2">[</span><span·class="p"·data-group-id="6626419449-3">{</span><span·class="n">A</span><span·class="p">,</span><span·class="n">B</span><span·class="p">,</span><span·class="n">C</span><span·class="p"·data-group-id="6626419449-3">}</span><span·class="w">·</span><span·class="p">||</span><span·class="w"> |
| 198 | ·······</span><span·class="n">A</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">seq</span><span·class="p"·data-group-id=" | 198 | ·······</span><span·class="n">A</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">seq</span><span·class="p"·data-group-id="6626419449-4">(</span><span·class="mi">1</span><span·class="p">,</span><span·class="n">N</span><span·class="o">-</span><span·class="mi">2</span><span·class="p"·data-group-id="6626419449-4">)</span><span·class="p">,</span><span·class="w"> |
| 199 | ·······</span><span·class="n">B</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">seq</span><span·class="p"·data-group-id=" | 199 | ·······</span><span·class="n">B</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">seq</span><span·class="p"·data-group-id="6626419449-5">(</span><span·class="n">A</span><span·class="o">+</span><span·class="mi">1</span><span·class="p">,</span><span·class="n">N</span><span·class="o">-</span><span·class="mi">1</span><span·class="p"·data-group-id="6626419449-5">)</span><span·class="p">,</span><span·class="w"> |
| 200 | ·······</span><span·class="n">C</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">seq</span><span·class="p"·data-group-id=" | 200 | ·······</span><span·class="n">C</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">seq</span><span·class="p"·data-group-id="6626419449-6">(</span><span·class="n">B</span><span·class="o">+</span><span·class="mi">1</span><span·class="p">,</span><span·class="n">N</span><span·class="p"·data-group-id="6626419449-6">)</span><span·class="p">,</span><span·class="w"> |
| 201 | ·······</span><span·class="n">A</span><span·class="o">+</span><span·class="n">B</span><span·class="o">+</span><span·class="n">C</span><span·class="w">·</span><span·class="o">=<</span><span·class="w">·</span><span·class="n">N</span><span·class="p">,</span><span·class="w"> | 201 | ·······</span><span·class="n">A</span><span·class="o">+</span><span·class="n">B</span><span·class="o">+</span><span·class="n">C</span><span·class="w">·</span><span·class="o">=<</span><span·class="w">·</span><span·class="n">N</span><span·class="p">,</span><span·class="w"> |
| 202 | ·······</span><span·class="n">A</span><span·class="o">*</span><span·class="n">A</span><span·class="o">+</span><span·class="n">B</span><span·class="o">*</span><span·class="n">B</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="n">C</span><span·class="o">*</span><span·class="n">C</span><span·class="w">·</span><span·class="p"·data-group-id=" | 202 | ·······</span><span·class="n">A</span><span·class="o">*</span><span·class="n">A</span><span·class="o">+</span><span·class="n">B</span><span·class="o">*</span><span·class="n">B</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="n">C</span><span·class="o">*</span><span·class="n">C</span><span·class="w">·</span><span·class="p"·data-group-id="6626419449-2">]</span><span·class="p">.</span></code></pre><h2·id="simplifications-with-list-comprehensions"·class="section-heading"> |
| 203 | ··<a·href="#simplifications-with-list-comprehensions"·class="hover-link"> | 203 | ··<a·href="#simplifications-with-list-comprehensions"·class="hover-link"> |
| 204 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 204 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 205 | ··</a> | 205 | ··</a> |
| 206 | ··<span·class="text">Simplifications·With·List·Comprehensions</span> | 206 | ··<span·class="text">Simplifications·With·List·Comprehensions</span> |
| 207 | </h2> | 207 | </h2> |
| 208 | <p>As·an·example,·list·comprehensions·can·be·used·to·simplify·some·of·the·functions | 208 | <p>As·an·example,·list·comprehensions·can·be·used·to·simplify·some·of·the·functions |
| 209 | in·<code·class="inline">lists.erl</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">append</span><span·class="p"·data-group-id=" | 209 | in·<code·class="inline">lists.erl</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">append</span><span·class="p"·data-group-id="8019454708-1">(</span><span·class="n">L</span><span·class="p"·data-group-id="8019454708-1">)</span><span·class="w">···</span><span·class="p">-></span><span·class="w">··</span><span·class="p"·data-group-id="8019454708-2">[</span><span·class="n">X</span><[·...·truncated·by·diffoscope;·len:·411,·SHA:·48c7ec3db7dbd7d515abb78ac4d43b19e9a446047fceeeb292e5ed2a96974671·...·]-2">]</span><span·class="p">.</span><span·class="w"> |
| 210 | </span><span·class="nf">map</span><span·class="p"·data-group-id=" | 210 | </span><span·class="nf">map</span><span·class="p"·data-group-id="8019454708-3">(</span><span·class="n">Fun</span><span·class="p">,</span><span·class="w">·</span><span·class="n">L</span><span·class="p"·data-group-id="8019454708-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·c[·...·truncated·by·diffoscope;·len:·440,·SHA:·6724a01b5c4b3a2ab9e9dd0c9a28d5b04a7cec0b7a43c6ae0534617bd857b0b2·...·]-4">]</span><span·class="p">.</span><span·class="w"> |
| 211 | </span><span·class="nf">filter</span><span·class="p"·data-group-id=" | 211 | </span><span·class="nf">filter</span><span·class="p"·data-group-id="8019454708-6">(</span><span·class="n">Pred</span><span·class="p">,</span><span·class="w">·</span><span·class="n">L</span><span·class="p"·data-group-id="8019454708-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·[·...·truncated·by·diffoscope;·len:·514,·SHA:·af7d421b67711875b6caa388c2714a7d73b8caed1a8e75b5373e82b2f82e0bd5·...·]-7">]</span><span·class="p">.</span></code></pre><h2·id="variable-bindings-in-list-comprehensions"·class="section-heading"> |
| 212 | ··<a·href="#variable-bindings-in-list-comprehensions"·class="hover-link"> | 212 | ··<a·href="#variable-bindings-in-list-comprehensions"·class="hover-link"> |
| 213 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 213 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 214 | ··</a> | 214 | ··</a> |
| 215 | ··<span·class="text">Variable·Bindings·in·List·Comprehensions</span> | 215 | ··<span·class="text">Variable·Bindings·in·List·Comprehensions</span> |
| 216 | </h2> | 216 | </h2> |
| 217 | <p>The·scope·rules·for·variables·that·occur·in·list·comprehensions·are·as·follows:</p><ul><li>All·variables·that·occur·in·a·generator·pattern·are·assumed·to·be·"fresh" | 217 | <p>The·scope·rules·for·variables·that·occur·in·list·comprehensions·are·as·follows:</p><ul><li>All·variables·that·occur·in·a·generator·pattern·are·assumed·to·be·"fresh" |
| 218 | variables.</li><li>Any·variables·that·are·defined·before·the·list·comprehension,·and·that·are | 218 | variables.</li><li>Any·variables·that·are·defined·before·the·list·comprehension,·and·that·are |
| 219 | used·in·filters,·have·the·values·they·had·before·the·list·comprehension.</li><li>Variables·cannot·be·exported·from·a·list·comprehension.</li></ul><p>As·an·example·of·these·rules,·suppose·you·want·to·write·the·function·<code·class="inline">select</code>, | 219 | used·in·filters,·have·the·values·they·had·before·the·list·comprehension.</li><li>Variables·cannot·be·exported·from·a·list·comprehension.</li></ul><p>As·an·example·of·these·rules,·suppose·you·want·to·write·the·function·<code·class="inline">select</code>, |
| 220 | which·selects·certain·elements·from·a·list·of·tuples.·Suppose·you·write | 220 | which·selects·certain·elements·from·a·list·of·tuples.·Suppose·you·write |
| 221 | <code·class="inline">select(X,·L)·->·[Y·||·{X,·Y}·<-·L].</code>·with·the·intention·of·extracting·all | 221 | <code·class="inline">select(X,·L)·->·[Y·||·{X,·Y}·<-·L].</code>·with·the·intention·of·extracting·all |
| 222 | tuples·from·<code·class="inline">L</code>,·where·the·first·item·is·<code·class="inline">X</code>.</p><p>Compiling·this·gives·the·following·diagnostic:</p><pre><code·class="text">./FileName.erl:Line:·Warning:·variable·'X'·shadowed·in·generate</code></pre><p>This·diagnostic·warns·that·the·variable·<code·class="inline">X</code>·in·the·pattern·is·not·the·same·as | 222 | tuples·from·<code·class="inline">L</code>,·where·the·first·item·is·<code·class="inline">X</code>.</p><p>Compiling·this·gives·the·following·diagnostic:</p><pre><code·class="text">./FileName.erl:Line:·Warning:·variable·'X'·shadowed·in·generate</code></pre><p>This·diagnostic·warns·that·the·variable·<code·class="inline">X</code>·in·the·pattern·is·not·the·same·as |
| 223 | the·variable·<code·class="inline">X</code>·that·occurs·in·the·function·head.</p><p>Evaluating·<code·class="inline">select</code>·gives·the·following·result:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nf">select</span><span·class="p"·data-group-id=" | 223 | the·variable·<code·class="inline">X</code>·that·occurs·in·the·function·head.</p><p>Evaluating·<code·class="inline">select</code>·gives·the·following·result:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nf">select</span><span·class="p"·data-group-id="6757012765-1">(</span><span·class="ss">b</span><span·class="p">,</span><span·class="p"·data-group-id="6757012765-2">[</span><span·class="p"·data-group-id="6757012765-3">{</span><span·class="ss">a</span><span·class="p">,</span><span·class="mi">1</span><span[·...·truncated·by·diffoscope;·len:·754,·SHA:·8da0044b28122f1f3ece954757fe0119d7e7604bc5ca1c3febb664ce0db22656·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 224 | </span><span·class="p"·data-group-id=" | 224 | </span><span·class="p"·data-group-id="6757012765-7">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">7</span><span·class="p"·data-group-id="6757012765-7">]</span></code></pre><p>This·is·not·the·wanted·result.·To·achieve·the·desired·effect,·<code·class="inline">select</code>·must·be |
| 225 | written·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">select</span><span·class="p"·data-group-id="7 | 225 | written·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">select</span><span·class="p"·data-group-id="7348218579-1">(</span><span·class="n">X</span><span·class="p">,</span><span·class="w">·</span><span·class="n">L</span><span·class="p"·data-group-id="7348218579-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">··</span><span·cla[·...·truncated·by·diffoscope;·len:·655,·SHA:·4eb3dcf3ebab749f311c73e5966eeef257c0dcbbbdaf37fac4c91460870ca1af·...·]-2">]</span><span·class="p">.</span></code></pre><p>The·generator·now·contains·unbound·variables·and·the·test·has·been·moved·into |
| 226 | the·filter.</p><p>This·now·works·as·expected:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nf">select</span><span·class="p"·data-group-id="2000000612-1">(</span><span·class="ss">b</span><span·class="p">,</span><span·class="p"·data-group-id="2000000612-2">[</span><span·class="p"·data-group-id="2000000612-3">{</span><span·class="ss">a</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="2000000612-3">}</span><span·class="p">,</span><span·class="p"·data-group-id="2000000612-4">{</span><span·class="ss">b</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="2000000612-4">}</span><span·class="p">,</span><span·class="p"·data-group-id="2000000612-5">{</span><span·class="ss">c</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="2000000612-5">}</span><span·class="p">,</span><span·class="p"·data-group-id="2000000612-6">{</span><span·class="ss">b</span><span·class="p">,</span><span·class="mi">7</span><span·class="p"·data-group-id="2000000612-6">}</span><span·class="p"·data-group-id="2000000612-2">]</span><span·class="p"·data-group-id="2000000612-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 227 | </span><span·class="p"·data-group-id="2000000612-7">[</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">7</span><span·class="p"·data-group-id="2000000612-7">]</span></code></pre><p>Also·note·that·a·variable·in·a·generator·pattern·will·shadow·a·variable·with·the | ||
| 228 | same·name·bound·in·a·previous·generator·pattern.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="p"·data-group-id="1205956290-1">[</span><span·class="p"·data-group-id="1205956290-2">{</span><span·class="n">X</span><span·class="p">,</span><span·class="n">Y</span><span·class="p"·data-group-id="1205956290-2">}</span><span·class="w">·</span><span·class="p">||</span><span·class="w">·</span><span·class="n">X</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="p"·data-group-id="1205956290-3">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="1205956290-3">]</span><span·class="p">,</span><span·class="w">·</span><span·class="n">X</span><span·class="o">=</span><span·class="n">Y</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="p"·data-group-id="1205956290-4">[</span><span·class="ss">a</span><span·class="p">,</span><span·class="ss">b</span><span·class="p">,</span><span·class="ss">c</span><span·class="p"·data-group-id="1205956290-4">]</span><span·class="p"·data-group-id="1205956290-1">]</span><span·class="p">.</span><span·class="w"> | ||
| 229 | 226 | the·filter.</p><p>This·now·works·as·expected:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nf">select</span><span·class="p"·data-group-id="5210995266-1">(</span><span·class="ss">b</span><span·cla[·...·truncated·by·diffoscope;·len:·1006,·SHA:·b561b73c1004fecdfe14860747583aae659b4b7a7464778ac979d2d8b6fdb65b·...·] | |
| 227 | </span><span·class="p"·data-group-id="5210995266-7">[</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">7</span><span·class="p"·data-group-id="5210995266-7">]</span></code></pre><p>Also·note·that·a·variable·in·a·generator·pattern·will·shadow·a·variable·with·the | ||
| 228 | same·name·bound·in·a·previous·generator·pattern.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="p"·data-group-id="1862658499-1">[</span><span·class="p"·data-group-id="1862658499-2">{</span><span·class="n">X</span><span·class="p">,</span><span·class="n">Y</span><span·class="p"·data-group-id="1862658499-2">}</span><span·class="w">·</span><span·class="p">||</span><span·class="w">·</span><span·class="n">X</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="p"·data-group-id="1862658499-3">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="1862658499-3">]</span><span·class="p">,</span><span·class="w">·</span><span·class="n">X</span><span·class="o">=</span><span·class="n">Y</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="p"·data-group-id="1862658499-4">[</span><span·class="ss">a</span><span·class="p">,</span><span·class="ss">b</span><span·class="p">,</span><span·class="ss">c</span><span·class="p"·data-group-id="1862658499-4">]</span><span·class="p"·data-group-id="1862658499-1">]</span><span·class="p">.</span><span·class="w"> | ||
| 229 | </span><span·class="p"·data-group-id="1862658499-5">[</span><span·class="p"·data-group-id="1862658499-6">{</span><span·class="ss">a</span><span·class="p">,</span><span·class="ss">a</span><span·class="p"·data-group-id="1862658499-6">}</span><span·class="p">,</span><span·class="p"·data-group-id="1862658499-7">{</span><span·class="ss">b</span><span·class="p">,</span><span·class="ss">b</span><span·class="p"·data-group-id="1862658499-7">}</span><span·class="p">,</span><span·class="p"·data-group-id="1862658499-8">{</span><span·class="ss">c</span><span·class="p">,</span><span·class="ss">c</span><span·class="p"·data-group-id="1862658499-8">}</span><span·class="p">,</span><span·class="p"·data-group-id="1862658499-9">{</span><span·class="ss">a</span><span·class="p">,</span><span·class="ss">a</span><span·class="p"·data-group-id="1862658499-9">}</span><span·class="p">,</span><span·class="p"·data-group-id="1862658499-10">{</span><span·class="ss">b</span><span·class="p">,</span><span·class="ss">b</span><span·class="p"·data-group-id="1862658499-10">}</span><span·class="p">,</span><span·class="p"·data-group-id="1862658499-11">{</span><span·class="ss">c</span><span·class="p">,</span><span·class="ss">c</span><span·class="p"·data-group-id="1862658499-11">}</span><span·class="p">,</span><span·class="p"·data-group-id="1862658499-12">{</span><span·class="ss">a</span><span·class="p">,</span><span·class="ss">a</span><span·class="p"·data-group-id="1862658499-12">}</span><span·class="p">,</span><span·class="p"·data-group-id="1862658499-13">{</span><span·class="ss">b</span><span·class="p">,</span><span·class="ss">b</span><span·class="p"·data-group-id="1862658499-13">}</span><span·class="p">,</span><span·class="p"·data-group-id="1862658499-14">{</span><span·class="ss">c</span><span·class="p">,</span><span·class="ss">c</span><span·class="p"·data-group-id="1862658499-14">}</span><span·class="p"·data-group-id="1862658499-5">]</span></code></pre><p>A·consequence·of·the·rules·for·importing·variables·into·a·list·comprehensions·is | ||
| 230 | that·certain·pattern·matching·operations·must·be·moved·into·the·filters·and | 230 | that·certain·pattern·matching·operations·must·be·moved·into·the·filters·and |
| 231 | cannot·be·written·directly·in·the·generators.</p><p>To·illustrate·this,·do·<em>not</em>·write·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">f</span><span·class="p"·data-group-id=" | 231 | cannot·be·written·directly·in·the·generators.</p><p>To·illustrate·this,·do·<em>not</em>·write·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">f</span><span·class="p"·data-group-id="0769648478-1">(</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="0769648478-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 232 | ····</span><span·class="n">Y</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 232 | ····</span><span·class="n">Y</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 233 | ····</span><span·class="p"·data-group-id=" | 233 | ····</span><span·class="p"·data-group-id="0769648478-2">[</span><span·class="w">·</span><span·class="n">Expression</span><span·class="w">·</span><span·class="p">||</span><span·class="w">·</span><span·class="n">PatternInvolving</span><span·class="w">·</span><span·class="n">Y</span><span·class="w">·[·...·truncated·by·diffoscope;·len:·248,·SHA:·65b3e8c31fcaa474185eb55cab2bf3aaf62db2b62d2845512de765783836c8ee·...·]-2">]</span><span·class="w"> |
| 234 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>Instead,·write·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">f</span><span·class="p"·data-group-id=" | 234 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>Instead,·write·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">f</span><span·class="p"·data-group-id="3249942526-1">(</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="3249942526-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 235 | ····</span><span·class="n">Y</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 235 | ····</span><span·class="n">Y</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 236 | ····</span><span·class="p"·data-group-id=" | 236 | ····</span><span·class="p"·data-group-id="3249942526-2">[</span><span·class="w">·</span><span·class="n">Expression</span><span·class="w">·</span><span·class="p">||</span><span·class="w">·</span><span·class="n">PatternInvolving</span><span·class="w">·</span><span·class="n">Y1</span><span·class="w">[·...·truncated·by·diffoscope;·len:·419,·SHA:·c6831a8c70e192523f4d160e55345e3bf1b6d35ffe410edafcf671250eef1a37·...·]-2">]</span><span·class="w"> |
| 237 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre> | 237 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre> |
| 238 | </div> | 238 | </div> |
| 239 | <div·class="bottom-actions"·id="bottom-actions"> | 239 | <div·class="bottom-actions"·id="bottom-actions"> |
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| 120 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 120 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 121 | ··</a> | 121 | ··</a> |
| 122 | ··<span·class="text">Creating·a·List</span> | 122 | ··<span·class="text">Creating·a·List</span> |
| 123 | </h2> | 123 | </h2> |
| 124 | <p>Lists·can·only·be·built·starting·from·the·end·and·attaching·list·elements·at·the | 124 | <p>Lists·can·only·be·built·starting·from·the·end·and·attaching·list·elements·at·the |
| 125 | beginning.·If·you·use·the·<code·class="inline">++</code>·operator·as·follows,·a·new·list·is·created·that | 125 | beginning.·If·you·use·the·<code·class="inline">++</code>·operator·as·follows,·a·new·list·is·created·that |
| 126 | is·a·copy·of·the·elements·in·<code·class="inline">List1</code>,·followed·by·<code·class="inline">List2</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">List1</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="n">List2</span></code></pre><p>Looking·at·how·<a·href="../../lib/stdlib-6.2.1/doc/html/lists.html#append/2"><code·class="inline">lists:append/2</code></a>·or·<code·class="inline">++</code>·would·be·implemented·in·plain·Erlang, | 126 | is·a·copy·of·the·elements·in·<code·class="inline">List1</code>,·followed·by·<code·class="inline">List2</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">List1</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="n">List2</span></code></pre><p>Looking·at·how·<a·href="../../lib/stdlib-6.2.1/doc/html/lists.html#append/2"><code·class="inline">lists:append/2</code></a>·or·<code·class="inline">++</code>·would·be·implemented·in·plain·Erlang, |
| 127 | clearly·the·first·list·is·copied:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">append</span><span·class="p"·data-group-id="9 | 127 | clearly·the·first·list·is·copied:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">append</span><span·class="p"·data-group-id="9976848650-1">(</span><span·class="p"·data-group-id="9976848650-2">[</span><span·class="n">H</span><span·class="p">|</span><span·class="n">T</span><span·class="p"·data-group-id="9976848650-2">]</span><span·class="p">,</span><span·class="w">·</span><span·cla[·...·truncated·by·diffoscope;·len:·59,·SHA:·d838e50ed542fe836ba3ec30846592326e09bf5c97345b959d387a386cd44a2f·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 128 | ····</span><span·class="p"·data-group-id="9 | 128 | ····</span><span·class="p"·data-group-id="9976848650-3">[</span><span·class="n">H</span><span·class="p">|</span><span·class="nf">append</span><span·class="p"·data-group-id="9976848650-4">(</span><span·class="n">T</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tail</span><span[·...·truncated·by·diffoscope;·len:·89,·SHA:·0beade326d0c09f52f2a085ccc8577707faa4296f690535fa3f49c0942c09eb3·...·]-3">]</span><span·class="p">;</span><span·class="w"> |
| 129 | </span><span·class="nf">append</span><span·class="p"·data-group-id="9 | 129 | </span><span·class="nf">append</span><span·class="p"·data-group-id="9976848650-5">(</span><span·class="p"·data-group-id="9976848650-6">[</span><span·class="p"·data-group-id="9976848650-6">]</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tail</span><span·class="p"·data-group-id="9976848650-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 130 | ····</span><span·class="n">Tail</span><span·class="p">.</span></code></pre><p>When·recursing·and·building·a·list,·it·is·important·to·ensure·that·you·attach | 130 | ····</span><span·class="n">Tail</span><span·class="p">.</span></code></pre><p>When·recursing·and·building·a·list,·it·is·important·to·ensure·that·you·attach |
| 131 | the·new·elements·to·the·beginning·of·the·list.·In·this·way,·you·will·build·<em>one</em> | 131 | the·new·elements·to·the·beginning·of·the·list.·In·this·way,·you·will·build·<em>one</em> |
| 132 | list,·not·hundreds·or·thousands·of·copies·of·the·growing·result·list.</p><p>Let·us·first·see·how·it·is·not·to·be·done:</p><p><strong>DO·NOT</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">bad_fib</span><span·class="p"·data-group-id=" | 132 | list,·not·hundreds·or·thousands·of·copies·of·the·growing·result·list.</p><p>Let·us·first·see·how·it·is·not·to·be·done:</p><p><strong>DO·NOT</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">bad_fib</span><span·class="p"·data-group-id="2579004610-1">(</span><span·class="n">N</span><span·class="p"·data-group-id="2579004610-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 133 | ····</span><span·class="nf">bad_fib</span><span·class="p"·data-group-id=" | 133 | ····</span><span·class="nf">bad_fib</span><span·class="p"·data-group-id="2579004610-2">(</span><span·class="n">N</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·[·...·truncated·by·diffoscope;·len:·131,·SHA:·5d531eb299c66a66f018949627dfe579d1e39a084206245dddc457247f9403a8·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 134 | </span><span·class="nf">bad_fib</span><span·class="p"·data-group-id=" | 134 | </span><span·class="nf">bad_fib</span><span·class="p"·data-group-id="2579004610-4">(</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">Current</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">Next</span><span·cl[·...·truncated·by·diffoscope;·len:·108,·SHA:·9bcc23dcc77dabdba8d605cb79c1c9bc83bc00290229f478a5b42520a421cbcd·...·]-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 135 | ····</span><span·class="n">Fibs</span><span·class="p">;</span><span·class="w"> | 135 | ····</span><span·class="n">Fibs</span><span·class="p">;</span><span·class="w"> |
| 136 | </span><span·class="nf">bad_fib</span><span·class="p"·data-group-id=" | 136 | </span><span·class="nf">bad_fib</span><span·class="p"·data-group-id="2579004610-5">(</span><span·class="n">N</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Current</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Next</span><span·class="p">,</span><span·class="w">·</span><span·cla[·...·truncated·by·diffoscope;·len:·59,·SHA:·da6033a216469b8c7dc3e8b98522393d6559b9480561162a748d8e11f3518bb2·...·]-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 137 | ····</span><span·class="nf">bad_fib</span><span·class="p"·data-group-id=" | 137 | ····</span><span·class="nf">bad_fib</span><span·class="p"·data-group-id="2579004610-6">(</span><span·class="n">N</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Next</span><span·class="p">,</span><span·class="w[·...·truncated·by·diffoscope;·len:·464,·SHA:·dd4369940aa4d848e2595d6d9d37f977cf4bf9f0850f8abc0a0d68fdd7b66e03·...·]-6">)</span><span·class="p">.</span></code></pre><p>Here·more·than·one·list·is·built.·In·each·iteration·step·a·new·list·is·created |
| 138 | that·is·one·element·longer·than·the·new·previous·list.</p><p>To·avoid·copying·the·result·in·each·iteration,·build·the·list·in·reverse·order | 138 | that·is·one·element·longer·than·the·new·previous·list.</p><p>To·avoid·copying·the·result·in·each·iteration,·build·the·list·in·reverse·order |
| 139 | and·reverse·the·list·when·you·are·done:</p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">tail_recursive_fib</span><span·class="p"·data-group-id=" | 139 | and·reverse·the·list·when·you·are·done:</p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">tail_recursive_fib</span><span·class="p"·data-group-id="5243463689-1">(</span><span·class="n">N</span><span·class="p"·data-group-id="5243463689-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 140 | ····</span><span·class="nf">tail_recursive_fib</span><span·class="p"·data-group-id=" | 140 | ····</span><span·class="nf">tail_recursive_fib</span><span·class="p"·data-group-id="5243463689-2">(</span><span·class="n">N</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·[·...·truncated·by·diffoscope;·len:·130,·SHA:·a0c98b2b34533831c0076e1c923025cd13aa01a5658c5f4d0f04c93ab3713378·...·]9-2">)</span><span·class="p">.</span><span·class="w"> |
| 141 | </span><span·class="nf">tail_recursive_fib</span><span·class="p"·data-group-id=" | 141 | </span><span·class="nf">tail_recursive_fib</span><span·class="p"·data-group-id="5243463689-4">(</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">Current</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">Next</span><span·cl[·...·truncated·by·diffoscope;·len:·107,·SHA:·7e8d5cb967773809141c14f430c22a778b9d639ad5cadae77530cf5a31e7d4ef·...·]9-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 142 | ····</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">reverse</span><span·class="p"·data-group-id=" | 142 | ····</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">reverse</span><span·class="p"·data-group-id="5243463689-5">(</span><span·class="n">Fibs</span><span·class="p"·data-group-id="5243463689-5">)</span><span·class="p">;</span><span·class="w"> |
| 143 | </span><span·class="nf">tail_recursive_fib</span><span·class="p"·data-group-id=" | 143 | </span><span·class="nf">tail_recursive_fib</span><span·class="p"·data-group-id="5243463689-6">(</span><span·class="n">N</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Current</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Next</span><span·class="p">,</span><span·class="w">·</span><span·cla[·...·truncated·by·diffoscope;·len:·58,·SHA:·46b0559960a3d4249292f490bb3b28f661e780b334d04efe7ecfa810305eb89e·...·]9-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 144 | ····</span><span·class="nf">tail_recursive_fib</span><span·class="p"·data-group-id=" | 144 | ····</span><span·class="nf">tail_recursive_fib</span><span·class="p"·data-group-id="5243463689-7">(</span><span·class="n">N</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Next</span><span·class="p">,</span><span·class="w[·...·truncated·by·diffoscope;·len:·414,·SHA:·fb57436a08ca9ad1fafcd7cee20aed52ceb2f7afdb5d3de96e053e764f1964ee·...·]9-7">)</span><span·class="p">.</span></code></pre><h2·id="list-comprehensions"·class="section-heading"> |
| 145 | ··<a·href="#list-comprehensions"·class="hover-link"> | 145 | ··<a·href="#list-comprehensions"·class="hover-link"> |
| 146 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 146 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 147 | ··</a> | 147 | ··</a> |
| 148 | ··<span·class="text">List·Comprehensions</span> | 148 | ··<span·class="text">List·Comprehensions</span> |
| 149 | </h2> | 149 | </h2> |
| 150 | <p>A·list·comprehension:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 150 | <p>A·list·comprehension:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="5317840272-1">[</span><span·class="n">Expr</span><span·class="p"·data-group-id="5317840272-2">(</span><span·class="n">E</span><span·class="p"·data-group-id="5317840272-2">)</span><span·class="w">·</span><span·class="p">||</span><span·class="w">·</span><spa[·...·truncated·by·diffoscope;·len:·676,·SHA:·cf947edb009a0a90f6ad6d275733b834669c92eb6c69ac62303ae0282652510e·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 151 | ····</span><span·class="p"·data-group-id=" | 151 | ····</span><span·class="p"·data-group-id="3357264578-3">[</span><span·class="n">Expr</span><span·class="p"·data-group-id="3357264578-4">(</span><span·class="n">E</span><span·class="p"·data-group-id="3357264578-4">)</span><span·class="p">|</span><span·class="nf">'lc^0'</span><span·class="p"[·...·truncated·by·diffoscope;·len:·234,·SHA:·a4698b8cf28cc2ba32002e27fea973ece7bda7dde514913e9c979fc043479dd0·...·]-3">]</span><span·class="p">;</span><span·class="w"> |
| 152 | </span><span·class="nf">'lc^0'</span><span·class="p"·data-group-id=" | 152 | </span><span·class="nf">'lc^0'</span><span·class="p"·data-group-id="3357264578-6">(</span><span·class="p"·data-group-id="3357264578-7">[</span><span·class="p"·data-group-id="3357264578-7">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">Expr</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·194,·SHA:·73b5eae5c308f6fa8e58a9b62df6a86fd86191b565889b6414178a9dcbbdd402·...·]-8">]</span><span·class="p">.</span></code></pre><p>If·the·result·of·the·list·comprehension·will·<em>obviously</em>·not·be·used,·a·list |
| 153 | will·not·be·constructed.·For·example,·in·this·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 153 | will·not·be·constructed.·For·example,·in·this·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="2534705283-1">[</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">put_chars</span><span·class="p"·data-group-id="2534705283-2">(</span><span·class="n">E</span><span·class="p"·data-group-id="2534705283-2">)</span><span·class="w">·</sp[·...·truncated·by·diffoscope;·len:·220,·SHA:·d6f82a8a945e45af5b7028ee1cd70116d1413ea224abb789c6ca45e48549c009·...·]-1">]</span><span·class="p">,</span><span·class="w"> |
| 154 | </span><span·class="ss">ok</span><span·class="p">.</span></code></pre><p>or·in·this·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">case</span><span·class="w">·</span><span·class="n">Var</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> | 154 | </span><span·class="ss">ok</span><span·class="p">.</span></code></pre><p>or·in·this·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">case</span><span·class="w">·</span><span·class="n">Var</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 155 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 155 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 156 | ········</span><span·class="p"·data-group-id=" | 156 | ········</span><span·class="p"·data-group-id="1510294380-1">[</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">put_chars</span><span·class="p"·data-group-id="1510294380-2">(</span><span·class="n">E</span><span·class="p"·data-group-id="1510294380-2">)</span><span·class="w">·</sp[·...·truncated·by·diffoscope;·len:·220,·SHA:·6c566a541050fde05410d9e87304e2ecc436483178f285a998609803cc9566d8·...·]-1">]</span><span·class="p">;</span><span·class="w"> |
| 157 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 157 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 158 | </span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 158 | </span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 159 | </span><span·class="nf">some_function</span><span·class="p"·data-group-id=" | 159 | </span><span·class="nf">some_function</span><span·class="p"·data-group-id="1510294380-3">(</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="1510294380-3">)</span><span·class="p">,</span></code></pre><p>the·value·is·not·assigned·to·a·variable,·not·passed·to·another·function,·and·not |
| 160 | returned.·This·means·that·there·is·no·need·to·construct·a·list·and·the·compiler | 160 | returned.·This·means·that·there·is·no·need·to·construct·a·list·and·the·compiler |
| 161 | will·simplify·the·code·for·the·list·comprehension·to:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">'lc^0'</span><span·class="p"·data-group-id=" | 161 | will·simplify·the·code·for·the·list·comprehension·to:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">'lc^0'</span><span·class="p"·data-group-id="9556739539-1">(</span><span·class="p"·data-group-id="9556739539-2">[</span><span·class="n">E</span><span·class="p">|</span><span·class="n">Tail</span><span·class="p"·data-group-id="9556739539-2">]</span><span·class="p">,</span><span·class="w">·</span><span[·...·truncated·by·diffoscope;·len:·63,·SHA:·bd256400b23f3315c82e19e4339e8af94ca8cdf263366f65085e0c613d8be5b2·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 162 | ····</span><span·class="n">Expr</span><span·class="p"·data-group-id=" | 162 | ····</span><span·class="n">Expr</span><span·class="p"·data-group-id="9556739539-3">(</span><span·class="n">E</span><span·class="p"·data-group-id="9556739539-3">)</span><span·class="p">,</span><span·class="w"> |
| 163 | ····</span><span·class="nf">'lc^0'</span><span·class="p"·data-group-id=" | 163 | ····</span><span·class="nf">'lc^0'</span><span·class="p"·data-group-id="9556739539-4">(</span><span·class="n">Tail</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Expr</span><span·class="p"·data-group-id="9556739539-4">)</span><span·class="p">;</span><span·class="w"> |
| 164 | </span><span·class="nf">'lc^0'</span><span·class="p"·data-group-id=" | 164 | </span><span·class="nf">'lc^0'</span><span·class="p"·data-group-id="9556739539-5">(</span><span·class="p"·data-group-id="9556739539-6">[</span><span·class="p"·data-group-id="9556739539-6">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">Expr</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·194,·SHA:·58cd8d1b186b770333f540296da589e6958fe6574a633e192a9888ee0f888495·...·]-7">]</span><span·class="p">.</span></code></pre><p>The·compiler·also·understands·that·assigning·to·<code·class="inline">_</code>·means·that·the·value·will |
| 165 | not·be·used.·Therefore,·the·code·in·the·following·example·will·also·be·optimized:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">_</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 165 | not·be·used.·Therefore,·the·code·in·the·following·example·will·also·be·optimized:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">_</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="1955195556-1">[</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">put_chars</span><span·class="p"·data-group-id="1955195556-2">(</span><span·class="n">E</span><span·class="p"·data-group-id="1955195556-2">)</span><span·class="w">·</sp[·...·truncated·by·diffoscope;·len:·220,·SHA:·58b5ef04e8ecb191c917de3d1ef3ec22c740a5fc9c9e04f2f5e0097ce8ebcdc8·...·]-1">]</span><span·class="p">,</span><span·class="w"> |
| 166 | </span><span·class="ss">ok</span><span·class="p">.</span></code></pre><h2·id="deep-and-flat-lists"·class="section-heading"> | 166 | </span><span·class="ss">ok</span><span·class="p">.</span></code></pre><h2·id="deep-and-flat-lists"·class="section-heading"> |
| 167 | ··<a·href="#deep-and-flat-lists"·class="hover-link"> | 167 | ··<a·href="#deep-and-flat-lists"·class="hover-link"> |
| 168 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 168 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 169 | ··</a> | 169 | ··</a> |
| 170 | ··<span·class="text">Deep·and·Flat·Lists</span> | 170 | ··<span·class="text">Deep·and·Flat·Lists</span> |
| 171 | </h2> | 171 | </h2> |
| 172 | <p><a·href="../../lib/stdlib-6.2.1/doc/html/lists.html#flatten/1"><code·class="inline">lists:flatten/1</code></a>·builds·an·entirely·new·list.·It·is·therefore·expensive,·and | 172 | <p><a·href="../../lib/stdlib-6.2.1/doc/html/lists.html#flatten/1"><code·class="inline">lists:flatten/1</code></a>·builds·an·entirely·new·list.·It·is·therefore·expensive,·and |
| 173 | even·<em>more</em>·expensive·than·the·<code·class="inline">++</code>·operator·(which·copies·its·left·argument, | 173 | even·<em>more</em>·expensive·than·the·<code·class="inline">++</code>·operator·(which·copies·its·left·argument, |
| 174 | but·not·its·right·argument).</p><p>In·the·following·situations·it·is·unnecessary·to·call·<a·href="../../lib/stdlib-6.2.1/doc/html/lists.html#flatten/1"><code·class="inline">lists:flatten/1</code></a>:</p><ul><li>When·sending·data·to·a·port.·Ports·understand·deep·lists·so·there·is·no·reason | 174 | but·not·its·right·argument).</p><p>In·the·following·situations·it·is·unnecessary·to·call·<a·href="../../lib/stdlib-6.2.1/doc/html/lists.html#flatten/1"><code·class="inline">lists:flatten/1</code></a>:</p><ul><li>When·sending·data·to·a·port.·Ports·understand·deep·lists·so·there·is·no·reason |
| 175 | to·flatten·the·list·before·sending·it·to·the·port.</li><li>When·calling·BIFs·that·accept·deep·lists,·such·as | 175 | to·flatten·the·list·before·sending·it·to·the·port.</li><li>When·calling·BIFs·that·accept·deep·lists,·such·as |
| 176 | <a·href="../../erts-15.2.3/doc/html/erlang.html#list_to_binary/1"><code·class="inline">list_to_binary/1</code></a>·or | 176 | <a·href="../../erts-15.2.3/doc/html/erlang.html#list_to_binary/1"><code·class="inline">list_to_binary/1</code></a>·or |
| 177 | <a·href="../../erts-15.2.3/doc/html/erlang.html#iolist_to_binary/1"><code·class="inline">iolist_to_binary/1</code></a>.</li><li>When·you·know·that·your·list·is·only·one·level·deep.·Use·<a·href="../../lib/stdlib-6.2.1/doc/html/lists.html#append/1"><code·class="inline">lists:append/1</code></a> | 177 | <a·href="../../erts-15.2.3/doc/html/erlang.html#iolist_to_binary/1"><code·class="inline">iolist_to_binary/1</code></a>.</li><li>When·you·know·that·your·list·is·only·one·level·deep.·Use·<a·href="../../lib/stdlib-6.2.1/doc/html/lists.html#append/1"><code·class="inline">lists:append/1</code></a> |
| 178 | instead.</li></ul><p><em>Examples:</em></p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">port_command</span><span·class="p"·data-group-id="4 | 178 | instead.</li></ul><p><em>Examples:</em></p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">port_command</span><span·class="p"·data-group-id="4091622696-1">(</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="n">DeepList</span><span·class="p"·data-group-id="4091622696-1">)</span></code></pre><p><strong>DO·NOT</strong></p><pre><code·class="makeup·erlang"·[·...·truncated·by·diffoscope;·len:·953,·SHA:·10b7038911014ea33e89bc658a3026483c0e474505f47314aeb00f9daf9a177c·...·]-1">]</span><span·class="p">,</span><span·class="w"> |
| 179 | </span><span·class="nf">port_command</span><span·class="p"·data-group-id=" | 179 | </span><span·class="nf">port_command</span><span·class="p"·data-group-id="5713177064-2">(</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="n">TerminatedStr</span><span·class="p"·data-group-id="5713177064-2">)</span></code></pre><p>Instead:</p><p><strong>DO</strong></p><pre><code·class[·...·truncated·by·diffoscope;·len:·336,·SHA:·b9c5b02474ee0087a5a509bd00fdfbe4cd086da61dbd815e779619aadf3027be·...·]-1">]</span><span·class="p">,</span><span·class="w"> |
| 180 | </span><span·class="nf">port_command</span><span·class="p"·data-group-id=" | 180 | </span><span·class="nf">port_command</span><span·class="p"·data-group-id="5717279912-2">(</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="n">TerminatedStr</span><span·class="p"·data-group-id="5717279912-2">)</span></code></pre><p><strong>DO</strong></p><pre><code·class="makeup·erlang[·...·truncated·by·diffoscope;·len:·831,·SHA:·677c531d0495978a8d85941513e5591b3b15e5a93bd9f708b9c895595fdf9e4b·...·]0-1">)</span><span·class="p">.</span><span·class="w"> |
| 181 | </span><span·class="p"·data-group-id="1466159300-6">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="1466159300-6">]</span></code></pre><p><strong>DO·NOT</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">flatten</span><span·class="p"·data-group-id="3172025627-1">(</span><span·class="p"·data-group-id="3172025627-2">[</span><span·class="p"·data-group-id="3172025627-3">[</span><span·class="mi">1</span><span·class="p"·data-group-id="3172025627-3">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3172025627-4">[</span><span·class="mi">2</span><span·class="p"·data-group-id="3172025627-4">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3172025627-5">[</span><span·class="mi">3</span><span·class="p"·data-group-id="3172025627-5">]</span><span·class="p"·data-group-id="3172025627-2">]</span><span·class="p"·data-group-id="3172025627-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 182 | </span><span·class="p"·data-group-id=" | 181 | </span><span·class="p"·data-group-id="2872166430-6">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="2872166430-6">]</span></code></pre><p><strong>DO·NOT</strong></p><pre><code·clas[·...·truncated·by·diffoscope;·len:·899,·SHA:·42f04e3a03484064dc40ee4eddc1c98ae584b30ad79f29e5af2c1acdfe144615·...·]"> |
| 182 | </span><span·class="p"·data-group-id="9966079904-6">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="9966079904-6">]</span></code></pre><h2·id="recursive-list-functions"·class="section-heading"> | ||
| 183 | ··<a·href="#recursive-list-functions"·class="hover-link"> | 183 | ··<a·href="#recursive-list-functions"·class="hover-link"> |
| 184 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 184 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 185 | ··</a> | 185 | ··</a> |
| 186 | ··<span·class="text">Recursive·List·Functions</span> | 186 | ··<span·class="text">Recursive·List·Functions</span> |
| 187 | </h2> | 187 | </h2> |
| 188 | <p>There·are·two·basic·ways·to·write·a·function·that·traverses·a·list·and | 188 | <p>There·are·two·basic·ways·to·write·a·function·that·traverses·a·list·and |
| 189 | produces·a·new·list.</p><p>The·first·way·is·writing·a·<em>body-recursive</em>·function:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·Add·42·to·each·integer·in·the·list.</span><span·class="w"> | 189 | produces·a·new·list.</p><p>The·first·way·is·writing·a·<em>body-recursive</em>·function:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·Add·42·to·each·integer·in·the·list.</span><span·class="w"> |
| 190 | </span><span·class="nf">add_42_body</span><span·class="p"·data-group-id=" | 190 | </span><span·class="nf">add_42_body</span><span·class="p"·data-group-id="6123644322-1">(</span><span·class="p"·data-group-id="6123644322-2">[</span><span·class="n">H</span><span·class="p">|</span><span·class="n">T</span><span·class="p"·data-group-id="6123644322-2">]</span><span·class="p"·data-group-id="6123644322-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 191 | ····</span><span·class="p"·data-group-id=" | 191 | ····</span><span·class="p"·data-group-id="6123644322-3">[</span><span·class="n">H</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="mi">42</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="nf">add_42_body</span><span[·...·truncated·by·diffoscope;·len:·166,·SHA:·5588d52da1ed577c1c27b5caf927531725dd6081d3953fe20090cb5a98e75a05·...·]-3">]</span><span·class="p">;</span><span·class="w"> |
| 192 | </span><span·class="nf">add_42_body</span><span·class="p"·data-group-id=" | 192 | </span><span·class="nf">add_42_body</span><span·class="p"·data-group-id="6123644322-5">(</span><span·class="p"·data-group-id="6123644322-6">[</span><span·class="p"·data-group-id="6123644322-6">]</span><span·class="p"·data-group-id="6123644322-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 193 | ····</span><span·class="p"·data-group-id=" | 193 | ····</span><span·class="p"·data-group-id="6123644322-7">[</span><span·class="p"·data-group-id="6123644322-7">]</span><span·class="p">.</span></code></pre><p>The·second·way·is·writing·a·<em>tail-recursive</em>·function:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·Add·42·to·each·integer·in·the·list.</span><span·class="w"> |
| 194 | </span><span·class="nf">add_42_tail</span><span·class="p"·data-group-id=" | 194 | </span><span·class="nf">add_42_tail</span><span·class="p"·data-group-id="5782488750-1">(</span><span·class="n">List</span><span·class="p"·data-group-id="5782488750-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 195 | ····</span><span·class="nf">add_42_tail</span><span·class="p"·data-group-id=" | 195 | ····</span><span·class="nf">add_42_tail</span><span·class="p"·data-group-id="5782488750-2">(</span><span·class="n">List</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5782488750-3">[</span><span·class="p"·data-group-id="5782488750-3">]</span><span·class="p"·data-group-id="5782488750-2">)</span><span·class="p">.</span><span·class="w"> |
| 196 | </span><span·class="nf">add_42_tail</span><span·class="p"·data-group-id=" | 196 | </span><span·class="nf">add_42_tail</span><span·class="p"·data-group-id="5782488750-4">(</span><span·class="p"·data-group-id="5782488750-5">[</span><span·class="n">H</span><span·class="p">|</span><span·class="n">T</span><span·class="p"·data-group-id="5782488750-5">]</span><span·class="p">,</span><span·class="w">·</span><span·cl[·...·truncated·by·diffoscope;·len:·59,·SHA:·e4f00ab37c2de86f034f57ad00ff093bd1aa29f392e5e57c08e6d80593a9ade5·...·]-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 197 | ····</span><span·class="nf">add_42_tail</span><span·class="p"·data-group-id=" | 197 | ····</span><span·class="nf">add_42_tail</span><span·class="p"·data-group-id="5782488750-6">(</span><span·class="n">T</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5782488750-7">[</span><span·class="n">H</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="[·...·truncated·by·diffoscope;·len:·205,·SHA:·b077bc82de1e3a020add699c63ac1f8e781f97699b0f0bb7f3d628de27403297·...·]-6">)</span><span·class="p">;</span><span·class="w"> |
| 198 | </span><span·class="nf">add_42_tail</span><span·class="p"·data-group-id=" | 198 | </span><span·class="nf">add_42_tail</span><span·class="p"·data-group-id="5782488750-8">(</span><span·class="p"·data-group-id="5782488750-9">[</span><span·class="p"·data-group-id="5782488750-9">]</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Acc</span><span·class="p"·data-group-id="5782488750-8">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 199 | ····</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">reverse</span><span·class="p"·data-group-id=" | 199 | ····</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">reverse</span><span·class="p"·data-group-id="5782488750-10">(</span><span·class="n">Acc</span><span·class="p"·data-group-id="5782488750-10">)</span><span·class="p">.</span></code></pre><p>In·early·version·of·Erlang·the·tail-recursive·function·would·typically |
| 200 | be·more·efficient.·In·modern·versions·of·Erlang,·there·is·usually·not | 200 | be·more·efficient.·In·modern·versions·of·Erlang,·there·is·usually·not |
| 201 | much·difference·in·performance·between·a·body-recursive·list·function·and | 201 | much·difference·in·performance·between·a·body-recursive·list·function·and |
| 202 | tail-recursive·function·that·reverses·the·list·at·the·end.·Therefore, | 202 | tail-recursive·function·that·reverses·the·list·at·the·end.·Therefore, |
| 203 | concentrate·on·writing·beautiful·code·and·forget·about·the·performance | 203 | concentrate·on·writing·beautiful·code·and·forget·about·the·performance |
| 204 | of·your·list·functions.·In·the·time-critical·parts·of·your·code, | 204 | of·your·list·functions.·In·the·time-critical·parts·of·your·code, |
| 205 | <em>measure</em>·before·rewriting·your·code.</p><p>For·a·thorough·discussion·about·tail·and·body·recursion,·see | 205 | <em>measure</em>·before·rewriting·your·code.</p><p>For·a·thorough·discussion·about·tail·and·body·recursion,·see |
| 206 | <a·href="http://ferd.ca/erlang-s-tail-recursion-is-not-a-silver-bullet.html">Erlang's·Tail·Recursion·is·Not·a·Silver·Bullet</a>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>This·section·is·about·list·functions·that·<em>construct</em>·lists.·A·tail-recursive | 206 | <a·href="http://ferd.ca/erlang-s-tail-recursion-is-not-a-silver-bullet.html">Erlang's·Tail·Recursion·is·Not·a·Silver·Bullet</a>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>This·section·is·about·list·functions·that·<em>construct</em>·lists.·A·tail-recursive |
| 207 | function·that·does·not·construct·a·list·runs·in·constant·space,·while·the | 207 | function·that·does·not·construct·a·list·runs·in·constant·space,·while·the |
| 208 | corresponding·body-recursive·function·uses·stack·space·proportional·to·the | 208 | corresponding·body-recursive·function·uses·stack·space·proportional·to·the |
| 209 | length·of·the·list.</p></section><p>For·example,·a·function·that·sums·a·list·of·integers,·is·<em>not</em>·to·be·written·as | 209 | length·of·the·list.</p></section><p>For·example,·a·function·that·sums·a·list·of·integers,·is·<em>not</em>·to·be·written·as |
| 210 | follows:</p><p><strong>DO·NOT</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">recursive_sum</span><span·class="p"·data-group-id="3548605560-1">(</span><span·class="p"·data-group-id="3548605560-2">[</span><span·class="n">H</span><span·class="p">|</span><span·class="n">T</span><span·class="p"·data-group-id="3548605560-2">]</span><span·class="p"·data-group-id="3548605560-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">H</span><span·class="o">+</span><span·class="nf">recursive_sum</span><span·class="p"·data-group-id="3548605560-3">(</span><span·class="n">T</span><span·class="p"·data-group-id="3548605560-3">)</span><span·class="p">;</span><span·class="w"> | ||
| 211 | </ | 210 | follows:</p><p><strong>DO·NOT</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">recursive_sum</span><span·class="p"·data-group-id="4622150144-1">(</span><span·class="p"·data-group-id="4622150144-2">[</span><span·class="n">H</span[·...·truncated·by·diffoscope;·len:·463,·SHA:·2bbf3c1b234395d1d136627b6e66a4c606dba3fce128dc266d82f808d0a0c8e2·...·]</span><span·class="w"> |
| 211 | </span><span·class="nf">recursive_sum</span><span·class="p"·data-group-id="4622150144-4">(</span><span·class="p"·data-group-id="4622150144-5">[</span><span·class="p"·data-group-id="4622150144-5">]</span><span·class="p"·data-group-id="4622150144-4">)</span><span·class="w">····</span><span·class="p">-></span><span·class="w">·</span><span·class="mi">0</span><span·class="p">.</span></code></pre><p>Instead:</p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">sum</span><span·class="p"·data-group-id="3824599569-1">(</span><span·class="n">L</span><span·class="p"·data-group-id="3824599569-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">sum</span><span·class="p"·data-group-id="3824599569-2">(</span><span·class="n">L</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">0</span><span·class="p"·data-group-id="3824599569-2">)</span><span·class="p">.</span><span·class="w"> | ||
| 212 | </span><span·class="nf">sum</span><span·class="p"·data-group-id=" | 212 | </span><span·class="nf">sum</span><span·class="p"·data-group-id="3824599569-3">(</span><span·class="p"·data-group-id="3824599569-4">[</span><span·class="n">H</span><span·class="p">|</span><span·class="n">T</span><span·class="p"·data-group-id="3824599569-4">]</span><span·class="p">,</span><span·class="w">·</span><span·cl[·...·truncated·by·diffoscope;·len:·462,·SHA:·8e671a1312e576219d6f359c9209bfb47ab752e0a1a1a8c92274aba94dfea40e·...·]-5">)</span><span·class="p">;</span><span·class="w"> |
| 213 | </span><span·class="nf">sum</span><span·class="p"·data-group-id=" | 213 | </span><span·class="nf">sum</span><span·class="p"·data-group-id="3824599569-6">(</span><span·class="p"·data-group-id="3824599569-7">[</span><span·class="p"·data-group-id="3824599569-7">]</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Sum</span><span·class="p"·data-group-id="3824599569-6">)</span><span·class="w">····</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Sum</span><span·class="p">.</span></code></pre> |
| 214 | </div> | 214 | </div> |
| 215 | <div·class="bottom-actions"·id="bottom-actions"> | 215 | <div·class="bottom-actions"·id="bottom-actions"> |
| 216 | ··<div·class="bottom-actions-item"> | 216 | ··<div·class="bottom-actions-item"> |
| 217 | ······<a·href="maps.html"·class="bottom-actions-button"·rel="prev"> | 217 | ······<a·href="maps.html"·class="bottom-actions-button"·rel="prev"> |
| 218 | ········<span·class="subheader"> | 218 | ········<span·class="subheader"> |
| Offset 117, 56 lines modified | Offset 117, 56 lines modified | ||
| 117 | <h2·id="file-inclusion"·class="section-heading"> | 117 | <h2·id="file-inclusion"·class="section-heading"> |
| 118 | ··<a·href="#file-inclusion"·class="hover-link"> | 118 | ··<a·href="#file-inclusion"·class="hover-link"> |
| 119 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 119 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 120 | ··</a> | 120 | ··</a> |
| 121 | ··<span·class="text">File·Inclusion</span> | 121 | ··<span·class="text">File·Inclusion</span> |
| 122 | </h2> | 122 | </h2> |
| 123 | <p>A·file·can·be·included·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include</span><span·class="p"·data-group-id="5846060252-1">(</span><span·class="n">File</span><span·class="p"·data-group-id="5846060252-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 124 | < | 123 | <p>A·file·can·be·included·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include</span><span·class="p"·data-group-id="0079216174-1">(</span><span·class="n">File</span><span·class="p"·data-group-id="00[·...·truncated·by·diffoscope;·len:·60,·SHA:·b50bc4227554abae4ddccd1ab3145f08759c8971c17528c01521b4390dfc8227·...·] |
| 124 | </span><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="0079216174-2">(</span><span·class="n">File</span><span·class="p"·data-group-id="0079216174-2">)</span><span·class="p">.</span></code></pre><p><code·class="inline">File</code>,·a·string,·is·to·point·out·a·file.·The·contents·of·this·file·are·included | ||
| 125 | as·is,·at·the·position·of·the·directive.</p><p>Include·files·are·typically·used·for·record·and·macro·definitions·that·are | 125 | as·is,·at·the·position·of·the·directive.</p><p>Include·files·are·typically·used·for·record·and·macro·definitions·that·are |
| 126 | shared·by·several·modules.·It·is·recommended·to·use·the·file·name·extension | 126 | shared·by·several·modules.·It·is·recommended·to·use·the·file·name·extension |
| 127 | <code·class="inline">.hrl</code>·for·include·files.</p><p><code·class="inline">File</code>·can·start·with·a·path·component·<code·class="inline">$VAR</code>,·for·some·string·<code·class="inline">VAR</code>.·If·that·is | 127 | <code·class="inline">.hrl</code>·for·include·files.</p><p><code·class="inline">File</code>·can·start·with·a·path·component·<code·class="inline">$VAR</code>,·for·some·string·<code·class="inline">VAR</code>.·If·that·is |
| 128 | the·case,·the·value·of·the·environment·variable·<code·class="inline">VAR</code>·as·returned·by | 128 | the·case,·the·value·of·the·environment·variable·<code·class="inline">VAR</code>·as·returned·by |
| 129 | <code·class="inline">os:getenv(VAR)</code>·is·substituted·for·<code·class="inline">$VAR</code>.·If·<code·class="inline">os:getenv(VAR)</code>·returns·<code·class="inline">false</code>, | 129 | <code·class="inline">os:getenv(VAR)</code>·is·substituted·for·<code·class="inline">$VAR</code>.·If·<code·class="inline">os:getenv(VAR)</code>·returns·<code·class="inline">false</code>, |
| 130 | <code·class="inline">$VAR</code>·is·left·as·is.</p><p>If·the·filename·<code·class="inline">File</code>·is·absolute·(possibly·after·variable·substitution),·the | 130 | <code·class="inline">$VAR</code>·is·left·as·is.</p><p>If·the·filename·<code·class="inline">File</code>·is·absolute·(possibly·after·variable·substitution),·the |
| 131 | include·file·with·that·name·is·included.·Otherwise,·the·specified·file·is | 131 | include·file·with·that·name·is·included.·Otherwise,·the·specified·file·is |
| 132 | searched·for·in·the·following·directories,·and·in·this·order:</p><ol><li>The·current·working·directory</li><li>The·directory·where·the·module·is·being·compiled</li><li>The·directories·given·by·the·<code·class="inline">include</code>·option</li></ol><p>For·details,·see·<a·href="../../erts-15.2.3/doc/html/erlc_cmd.html">erlc</a>·in·ERTS·and | 132 | searched·for·in·the·following·directories,·and·in·this·order:</p><ol><li>The·current·working·directory</li><li>The·directory·where·the·module·is·being·compiled</li><li>The·directories·given·by·the·<code·class="inline">include</code>·option</li></ol><p>For·details,·see·<a·href="../../erts-15.2.3/doc/html/erlc_cmd.html">erlc</a>·in·ERTS·and |
| 133 | <a·href="../../lib/compiler-8.6/doc/html/compile.html"><code·class="inline">compile</code></a>·in·Compiler.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include</span><span·class="p"·data-group-id=" | 133 | <a·href="../../lib/compiler-8.6/doc/html/compile.html"><code·class="inline">compile</code></a>·in·Compiler.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include</span><span·class="p"·data-group-id="2522279470-1">(</span><span·class="s">"my_records.hrl"</span><span·class="p"·data-group-id="2522279470-1">)</span><span·class="p">.</span><span·class="w"> |
| 134 | </span><span·class="p">-</span><span·class="na">include</span><span·class="p"·data-group-id=" | 134 | </span><span·class="p">-</span><span·class="na">include</span><span·class="p"·data-group-id="2522279470-2">(</span><span·class="s">"incdir/my_records.hrl"</span><span·class="p"·data-group-id="2522279470-2">)</span><span·class="p">.</span><span·class="w"> |
| 135 | </span><span·class="p">-</span><span·class="na">include</span><span·class="p"·data-group-id=" | 135 | </span><span·class="p">-</span><span·class="na">include</span><span·class="p"·data-group-id="2522279470-3">(</span><span·class="s">"/home/user/proj/my_records.hrl"</span><span·class="p"·data-group-id="2522279470-3">)</span><span·class="p">.</span><span·class="w"> |
| 136 | </span><span·class="p">-</span><span·class="na">include</span><span·class="p"·data-group-id=" | 136 | </span><span·class="p">-</span><span·class="na">include</span><span·class="p"·data-group-id="2522279470-4">(</span><span·class="s">"$PROJ_ROOT/my_records.hrl"</span><span·class="p"·data-group-id="2522279470-4">)</span><span·class="p">.</span></code></pre><p><code·class="inline">include_lib</code>·is·similar·to·<code·class="inline">include</code>,·but·is·not·to·point·out·an·absolute·file. |
| 137 | Instead,·the·first·path·component·(possibly·after·variable·substitution)·is | 137 | Instead,·the·first·path·component·(possibly·after·variable·substitution)·is |
| 138 | assumed·to·be·the·name·of·an·application.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id=" | 138 | assumed·to·be·the·name·of·an·application.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="1069934305-1">(</span><span·class="s">"kernel/include/file.hrl"</span><span·class="p"·data-group-id="1069934305-1">)</span><span·class="p">.</span></code></pre><p>The·code·server·uses·<code·class="inline">code:lib_dir(kernel)</code>·to·find·the·directory·of·the·current |
| 139 | (latest)·version·of·Kernel,·and·then·the·subdirectory·<code·class="inline">include</code>·is·searched·for | 139 | (latest)·version·of·Kernel,·and·then·the·subdirectory·<code·class="inline">include</code>·is·searched·for |
| 140 | the·file·<code·class="inline">file.hrl</code>.</p><h2·id="defining-and-using-macros"·class="section-heading"> | 140 | the·file·<code·class="inline">file.hrl</code>.</p><h2·id="defining-and-using-macros"·class="section-heading"> |
| 141 | ··<a·href="#defining-and-using-macros"·class="hover-link"> | 141 | ··<a·href="#defining-and-using-macros"·class="hover-link"> |
| 142 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 142 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 143 | ··</a> | 143 | ··</a> |
| 144 | ··<span·class="text">Defining·and·Using·Macros</span> | 144 | ··<span·class="text">Defining·and·Using·Macros</span> |
| 145 | </h2> | 145 | </h2> |
| 146 | <p>A·macro·is·defined·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="4427869141-1">(</span><span·class="n">Const</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Replacement</span><span·class="p"·data-group-id="4427869141-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 147 | < | 146 | <p>A·macro·is·defined·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="9377107794-1">(</span><span·class="n">Const</span><span·class="p">,</span><span·class="[·...·truncated·by·diffoscope;·len:·138,·SHA:·7f530a6926c5d46bee7c2ae3d9636bccb5c9380d087074bd7ec43eb9ab2c48a5·...·] |
| 147 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="9377107794-2">(</span><span·class="n">Func</span><span·class="p"·data-group-id="9377107794-3">(</span><span·class="n">Var1</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">,</span><span·class="n">VarN</span><span·class="p"·data-group-id="9377107794-3">)</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Replacement</span><span·class="p"·data-group-id="9377107794-2">)</span><span·class="p">.</span></code></pre><p>A·macro·definition·can·be·placed·anywhere·among·the·attributes·and·function | ||
| 148 | declarations·of·a·module,·but·the·definition·must·come·before·any·usage·of·the | 148 | declarations·of·a·module,·but·the·definition·must·come·before·any·usage·of·the |
| 149 | macro.</p><p>If·a·macro·is·used·in·several·modules,·it·is·recommended·that·the·macro | 149 | macro.</p><p>If·a·macro·is·used·in·several·modules,·it·is·recommended·that·the·macro |
| 150 | definition·is·placed·in·an·include·file.</p><p>A·macro·is·used·as·follows:</p><pre><code·class="text">?Const | 150 | definition·is·placed·in·an·include·file.</p><p>A·macro·is·used·as·follows:</p><pre><code·class="text">?Const |
| 151 | ?Func(Arg1,...,ArgN)</code></pre><p>Macros·are·expanded·during·compilation.·A·simple·macro·<code·class="inline">?Const</code>·is·replaced·with | 151 | ?Func(Arg1,...,ArgN)</code></pre><p>Macros·are·expanded·during·compilation.·A·simple·macro·<code·class="inline">?Const</code>·is·replaced·with |
| 152 | <code·class="inline">Replacement</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="2 | 152 | <code·class="inline">Replacement</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="2226573684-1">(</span><span·class="n">TIMEOUT</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">200</span><span·class="p"·data-group-id="2226573684-1">)</span><span·class="p">.</span><span·class="w"> |
| 153 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 153 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 154 | </span><span·class="nf">call</span><span·class="p"·data-group-id="2 | 154 | </span><span·class="nf">call</span><span·class="p"·data-group-id="2226573684-2">(</span><span·class="n">Request</span><span·class="p"·data-group-id="2226573684-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 155 | ····</span><span·class="nc">server</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id="2 | 155 | ····</span><span·class="nc">server</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id="2226573684-3">(</span><span·class="ss">refserver</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Request</span><span·class="p">,</span><span·class="w">·</span><span·class="o">?</span><span·class="n">TIMEOUT</span><span·class="p"·data-g[·...·truncated·by·diffoscope;·len:·295,·SHA:·d840d8d3b8d4c102ac3f2fc03f1ee967efb2bba14519d816456fdfd471c866cf·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 156 | ····</span><span·class="nc">server</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id=" | 156 | ····</span><span·class="nc">server</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id="1888571054-2">(</span><span·class="ss">refserver</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Request</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">200</span><span·class="p"·data-group-id="1888571054-2">)</span><span·class="p">.</span></code></pre><p>A·macro·<code·class="inline">?Func(Arg1,...,ArgN)</code>·is·replaced·with·<code·class="inline">Replacement</code>,·where·all |
| 157 | occurrences·of·a·variable·<code·class="inline">Var</code>·from·the·macro·definition·are·replaced·with·the | 157 | occurrences·of·a·variable·<code·class="inline">Var</code>·from·the·macro·definition·are·replaced·with·the |
| 158 | corresponding·argument·<code·class="inline">Arg</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id=" | 158 | corresponding·argument·<code·class="inline">Arg</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="7258040161-1">(</span><span·class="n">MACRO1</span><span·class="p"·data-group-id="7258040161-2">(</span><span·class="n">X</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Y</span><span·class="p"·data-group-id="7258040161-2">)</span><sp[·...·truncated·by·diffoscope;·len:·432,·SHA:·c2ce7ade655b8eb9ccab2af650d815bb7e8a6e631e34ef363cc4805d93578c2c·...·]61-1">)</span><span·class="p">.</span><span·class="w"> |
| 159 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 159 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 160 | </span><span·class="nf">bar</span><span·class="p"·data-group-id=" | 160 | </span><span·class="nf">bar</span><span·class="p"·data-group-id="7258040161-4">(</span><span·class="n">X</span><span·class="p"·data-group-id="7258040161-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 161 | ····</span><span·class="o">?</span><span·class="n">MACRO1</span><span·class="p"·data-group-id=" | 161 | ····</span><span·class="o">?</span><span·class="n">MACRO1</span><span·class="p"·data-group-id="7258040161-5">(</span><span·class="ss">a</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">b</span><span·class="p"·data-group-id="7258040161-5">)</span><span·class="p">,</span><span·class="w"> |
| 162 | ····</span><span·class="o">?</span><span·class="n">MACRO1</span><span·class="p"·data-group-id=" | 162 | ····</span><span·class="o">?</span><span·class="n">MACRO1</span><span·class="p"·data-group-id="7258040161-6">(</span><span·class="n">X</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">123</span><span·class="p"·data-group-id="7258040161-6">)</span></code></pre><p>This·is·expanded·to:</p><pre><code·class="makeup·erlang"·translate[·...·truncated·by·diffoscope;·len:·151,·SHA:·4e825b64c4d7d0af69dc30c0a4cbf58e5583924620b99400249f21e5fd0fcc2e·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 163 | ····</span><span·class="p"·data-group-id=" | 163 | ····</span><span·class="p"·data-group-id="4373876372-2">{</span><span·class="ss">a</span><span·class="p">,</span><span·class="ss">a</span><span·class="p">,</span><span·class="ss">b</span><span·class="p">,</span><span·class="ss">b</span><span·class="p"·data-group-id="4373876372-2">}</span><span·class="p">,</span><span·class="w"> |
| 164 | ····</span><span·class="p"·data-group-id=" | 164 | ····</span><span·class="p"·data-group-id="4373876372-3">{</span><span·class="ss">a</span><span·class="p">,</span><span·class="n">X</span><span·class="p">,</span><span·class="ss">b</span><span·class="p">,</span><span·class="mi">123</span><span·class="p"·data-group-id="4373876372-3">}</span><span·class="p">.</span></code></pre><p>It·is·good·programming·practice,·but·not·mandatory,·to·ensure·that·a·macro |
| 165 | definition·is·a·valid·Erlang·syntactic·form.</p><p>To·view·the·result·of·macro·expansion,·a·module·can·be·compiled·with·the·<code·class="inline">'P'</code> | 165 | definition·is·a·valid·Erlang·syntactic·form.</p><p>To·view·the·result·of·macro·expansion,·a·module·can·be·compiled·with·the·<code·class="inline">'P'</code> |
| 166 | option.·<code·class="inline">compile:file(File,·['P'])</code>.·This·produces·a·listing·of·the·parsed·code | 166 | option.·<code·class="inline">compile:file(File,·['P'])</code>.·This·produces·a·listing·of·the·parsed·code |
| 167 | after·preprocessing·and·parse·transforms,·in·the·file·<code·class="inline">File.P</code>.</p><h2·id="predefined-macros"·class="section-heading"> | 167 | after·preprocessing·and·parse·transforms,·in·the·file·<code·class="inline">File.P</code>.</p><h2·id="predefined-macros"·class="section-heading"> |
| 168 | ··<a·href="#predefined-macros"·class="hover-link"> | 168 | ··<a·href="#predefined-macros"·class="hover-link"> |
| 169 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 169 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 170 | ··</a> | 170 | ··</a> |
| 171 | ··<span·class="text">Predefined·Macros</span> | 171 | ··<span·class="text">Predefined·Macros</span> |
| Offset 185, 29 lines modified | Offset 185, 29 lines modified | ||
| 185 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 185 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 186 | ··</a> | 186 | ··</a> |
| 187 | ··<span·class="text">Macros·Overloading</span> | 187 | ··<span·class="text">Macros·Overloading</span> |
| 188 | </h2> | 188 | </h2> |
| 189 | <p>It·is·possible·to·overload·macros,·except·for·predefined·macros.·An·overloaded | 189 | <p>It·is·possible·to·overload·macros,·except·for·predefined·macros.·An·overloaded |
| 190 | macro·has·more·than·one·definition,·each·with·a·different·number·of·arguments.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Change</h4><p>Support·for·overloading·of·macros·was·added·in·Erlang·5.7.5/OTP·R13B04.</p></section><p>A·macro·<code·class="inline">?Func(Arg1,...,ArgN)</code>·with·a·(possibly·empty)·list·of·arguments·results | 190 | macro·has·more·than·one·definition,·each·with·a·different·number·of·arguments.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Change</h4><p>Support·for·overloading·of·macros·was·added·in·Erlang·5.7.5/OTP·R13B04.</p></section><p>A·macro·<code·class="inline">?Func(Arg1,...,ArgN)</code>·with·a·(possibly·empty)·list·of·arguments·results |
| 191 | in·an·error·message·if·there·is·at·least·one·definition·of·<code·class="inline">Func</code>·with | 191 | in·an·error·message·if·there·is·at·least·one·definition·of·<code·class="inline">Func</code>·with |
| 192 | arguments,·but·none·with·N·arguments.</p><p>Assuming·these·definitions:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id=" | 192 | arguments,·but·none·with·N·arguments.</p><p>Assuming·these·definitions:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="1762543734-1">(</span><span·class="n">F0</span><span·class="p"·data-group-id="1762543734-2">(</span><span·class="p"·data-group-id="1762543734-2">)</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">c</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·11,·SHA:·81907d33dbf60129251f2c1eac9bddf33ecb396cef75cafdd0eac07305ae7aa4·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 193 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id=" | 193 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="1762543734-3">(</span><span·class="n">F1</span><span·class="p"·data-group-id="1762543734-4">(</span><span·class="n">A</span><span·class="p"·data-group-id="1762543734-4">)</span><span·class="p">,</span><span·class="w">·</span><span·class="n">A</span><span·c[·...·truncated·by·diffoscope;·len:·34,·SHA:·9a3685113be335656b5952b4f0121ea31265d15bc7d89c7c028a4638adaf5451·...·]-3">)</span><span·class="p">.</span><span·class="w"> |
| 194 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id=" | 194 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="1762543734-5">(</span><span·class="n">C</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">m</span><span·class="p">:</span><span·class="ss">f</span><span·class="p"·data-group-id="1762543734-5">)</span><span·class="p">.</span></code></pr[·...·truncated·by·diffoscope;·len:·205,·SHA:·16fb0cf6d29e0b19ec1603b9ce3fe302c4610257e9464acd5cd8467e3727dd3f·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 195 | ····</span><span·class="o">?</span><span·class="n">F0</span><span·class="p">.</span><span·class="w">·</span><span·class="c1">%·No,·an·empty·list·of·arguments·expected.</span><span·class="w"> | 195 | ····</span><span·class="o">?</span><span·class="n">F0</span><span·class="p">.</span><span·class="w">·</span><span·class="c1">%·No,·an·empty·list·of·arguments·expected.</span><span·class="w"> |
| 196 | </span><span·class="nf">f1</span><span·class="p"·data-group-id=" | 196 | </span><span·class="nf">f1</span><span·class="p"·data-group-id="8106736186-2">(</span><span·class="n">A</span><span·class="p"·data-group-id="8106736186-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 197 | ····</span><span·class="o">?</span><span·class="n">F1</span><span·class="p"·data-group-id=" | 197 | ····</span><span·class="o">?</span><span·class="n">F1</span><span·class="p"·data-group-id="8106736186-3">(</span><span·class="n">A</span><span·class="p">,</span><span·class="w">·</span><span·class="n">A</span><span·class="p"·data-group-id="8106736186-3">)</span><span·class="p">.</span><span·class="w">·</span><span·class="c1">%·No,·exactly·one·argument·expected.</span></code></pre><p>On·the·other·hand,</p><pre><code·class="text">f()·-> |
| 198 | ····?C().</code></pre><p>is·expanded·to</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">f</span><span·class="p"·data-group-id=" | 198 | ····?C().</code></pre><p>is·expanded·to</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">f</span><span·class="p"·data-group-id="1993066038-1">(</span><span·class="p"·data-group-id="1993066038-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 199 | ····</span><span·class="nc">m</span><span·class="p">:</span><span·class="nf">f</span><span·class="p"·data-group-id=" | 199 | ····</span><span·class="nc">m</span><span·class="p">:</span><span·class="nf">f</span><span·class="p"·data-group-id="1993066038-2">(</span><span·class="p"·data-group-id="1993066038-2">)</span><span·class="p">.</span></code></pre><h2·id="removing-a-macro-definition"·class="section-heading"> |
| 200 | ··<a·href="#removing-a-macro-definition"·class="hover-link"> | 200 | ··<a·href="#removing-a-macro-definition"·class="hover-link"> |
| 201 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 201 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 202 | ··</a> | 202 | ··</a> |
| 203 | ··<span·class="text">Removing·a·macro·definition</span> | 203 | ··<span·class="text">Removing·a·macro·definition</span> |
| 204 | </h2> | 204 | </h2> |
| 205 | <p>A·definition·of·macro·can·be·removed·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">undef</span><span·class="p"·data-group-id=" | 205 | <p>A·definition·of·macro·can·be·removed·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">undef</span><span·class="p"·data-group-id="1249549600-1">(</span><span·class="n">Macro</span><span·class="p"·data-group-id="1249549600-1">)</span><span·class="p">.</span></code></pre><h2·id="conditional-compilation"·class="section-heading"> |
| 206 | ··<a·href="#conditional-compilation"·class="hover-link"> | 206 | ··<a·href="#conditional-compilation"·class="hover-link"> |
| 207 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 207 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 208 | ··</a> | 208 | ··</a> |
| 209 | ··<span·class="text">Conditional·Compilation</span> | 209 | ··<span·class="text">Conditional·Compilation</span> |
| 210 | </h2> | 210 | </h2> |
| 211 | <p>The·following·macro·directives·support·conditional·compilation:</p><ul><li><p><strong><code·class="inline">-ifdef(Macro).</code></strong>·-·Evaluate·the·following·lines·only·if·<code·class="inline">Macro</code>·is | 211 | <p>The·following·macro·directives·support·conditional·compilation:</p><ul><li><p><strong><code·class="inline">-ifdef(Macro).</code></strong>·-·Evaluate·the·following·lines·only·if·<code·class="inline">Macro</code>·is |
| 212 | defined.</p></li><li><p><strong><code·class="inline">-ifndef(Macro).</code></strong>·-·Evaluate·the·following·lines·only·if·<code·class="inline">Macro</code>·is·not | 212 | defined.</p></li><li><p><strong><code·class="inline">-ifndef(Macro).</code></strong>·-·Evaluate·the·following·lines·only·if·<code·class="inline">Macro</code>·is·not |
| Offset 219, 43 lines modified | Offset 219, 43 lines modified | ||
| 219 | true,·and·the·<code·class="inline">Condition</code>·evaluates·to·true,·the·lines·following·the·<code·class="inline">elif</code> | 219 | true,·and·the·<code·class="inline">Condition</code>·evaluates·to·true,·the·lines·following·the·<code·class="inline">elif</code> |
| 220 | are·evaluated·instead.</p></li><li><p><strong><code·class="inline">-endif.</code></strong>·-·Specifies·the·end·of·a·series·of·control·flow·directives.</p></li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Macro·directives·cannot·be·used·inside·functions.</p></section><p>Syntactically,·the·<code·class="inline">Condition</code>·in·<code·class="inline">if</code>·and·<code·class="inline">elif</code>·must·be·a | 220 | are·evaluated·instead.</p></li><li><p><strong><code·class="inline">-endif.</code></strong>·-·Specifies·the·end·of·a·series·of·control·flow·directives.</p></li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Macro·directives·cannot·be·used·inside·functions.</p></section><p>Syntactically,·the·<code·class="inline">Condition</code>·in·<code·class="inline">if</code>·and·<code·class="inline">elif</code>·must·be·a |
| 221 | <a·href="expressions.html#guard-expressions">guard·expression</a>.·Other·constructs·(such·as | 221 | <a·href="expressions.html#guard-expressions">guard·expression</a>.·Other·constructs·(such·as |
| 222 | a·<code·class="inline">case</code>·expression)·result·in·a·compilation·error.</p><p>As·opposed·to·the·standard·guard·expressions,·an·expression·in·an·<code·class="inline">if</code>·and | 222 | a·<code·class="inline">case</code>·expression)·result·in·a·compilation·error.</p><p>As·opposed·to·the·standard·guard·expressions,·an·expression·in·an·<code·class="inline">if</code>·and |
| 223 | <code·class="inline">elif</code>·also·supports·calling·the·psuedo-function·<code·class="inline">defined(Name)</code>,·which·tests | 223 | <code·class="inline">elif</code>·also·supports·calling·the·psuedo-function·<code·class="inline">defined(Name)</code>,·which·tests |
| 224 | whether·the·<code·class="inline">Name</code>·argument·is·the·name·of·a·previously·defined·macro. | 224 | whether·the·<code·class="inline">Name</code>·argument·is·the·name·of·a·previously·defined·macro. |
| 225 | <code·class="inline">defined(Name)</code>·evaluates·to·<code·class="inline">true</code>·if·the·macro·is·defined·and·<code·class="inline">false</code> | 225 | <code·class="inline">defined(Name)</code>·evaluates·to·<code·class="inline">true</code>·if·the·macro·is·defined·and·<code·class="inline">false</code> |
| 226 | otherwise.·An·attempt·to·call·other·functions·results·in·a·compilation·error.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="93 | 226 | otherwise.·An·attempt·to·call·other·functions·results·in·a·compilation·error.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="6193828271-1">(</span><span·class="ss">m</span><span·class="p"·data-group-id="6193828271-1">)</span><span·class="p">.</span><span·class="w"> |
| 227 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 227 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 228 | </span><span·class="w"> | 228 | </span><span·class="w"> |
| 229 | </span><span·class="p">-</span><span·class="na">ifdef</span><span·class="p"·data-group-id="93 | 229 | </span><span·class="p">-</span><span·class="na">ifdef</span><span·class="p"·data-group-id="6193828271-2">(</span><span·class="ss">debug</span><span·class="p"·data-group-id="6193828271-2">)</span><span·class="p">.</span><span·class="w"> |
| 230 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="93 | 230 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="6193828271-3">(</span><span·class="n">LOG</span><span·class="p"·data-group-id="6193828271-4">(</span><span·class="n">X</span><span·class="p"·data-group-id="6193828271-4">)</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">io</span><spa[·...·truncated·by·diffoscope;·len:·740,·SHA:·b8f7d51150d309e6fd9297bc3993dead1aa4d4482fa2b41e4a208f361fc6fa74·...·]-3">)</span><span·class="p">.</span><span·class="w"> |
| 231 | </span><span·class="p">-</span><span·class="na">else</span><span·class="p">.</span><span·class="w"> | 231 | </span><span·class="p">-</span><span·class="na">else</span><span·class="p">.</span><span·class="w"> |
| 232 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="93 | 232 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="6193828271-7">(</span><span·class="n">LOG</span><span·class="p"·data-group-id="6193828271-8">(</span><span·class="n">X</span><span·class="p"·data-group-id="6193828271-8">)</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">true</span><s[·...·truncated·by·diffoscope;·len:·39,·SHA:·ca5988d66e8b1b8b3c3da0d24cad9e94e44a271a2e7bf18131c3d794760b0460·...·]-7">)</span><span·class="p">.</span><span·class="w"> |
| 233 | </span><span·class="p">-</span><span·class="na">endif</span><span·class="p">.</span><span·class="w"> | 233 | </span><span·class="p">-</span><span·class="na">endif</span><span·class="p">.</span><span·class="w"> |
| 234 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>When·trace·output·is·desired,·<code·class="inline">debug</code>·is·to·be·defined·when·the·module·<code·class="inline">m</code>·is | 234 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>When·trace·output·is·desired,·<code·class="inline">debug</code>·is·to·be·defined·when·the·module·<code·class="inline">m</code>·is |
| 235 | compiled:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erlc·-Ddebug·m.erl</span><span·class="w"> | 235 | compiled:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erlc·-Ddebug·m.erl</span><span·class="w"> |
| 236 | </span><span·class="ow">or</span><span·class="w"> | 236 | </span><span·class="ow">or</span><span·class="w"> |
| 237 | </span><span·class="mi">1</span><span·class="o">></span><span·class="w">·</span><span·class="nf">c</span><span·class="p"·data-group-id=" | 237 | </span><span·class="mi">1</span><span·class="o">></span><span·class="w">·</span><span·class="nf">c</span><span·class="p"·data-group-id="3787629390-1">(</span><span·class="ss">m</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3787629390-2">{</span><span·class="ss">d</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">debug</span><span·[·...·truncated·by·diffoscope;·len:·88,·SHA:·0bfc1cce1f1c1e66a678c24d735d2bf8959ab10a4f8007022d0f306e654ac178·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 238 | </span><span·class="p"·data-group-id="0767495744-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="ss">m</span><span·class="p"·data-group-id="0767495744-3">}</span></code></pre><p><code·class="inline">?LOG(Arg)</code>·is·then·expanded·to·a·call·to·<a·href="../../lib/stdlib-6.2.1/doc/html/io.html#format/2"><code·class="inline">io:format/2</code></a>·and·provide·the·user | ||
| 239 | 238 | </span><span·class="p"·data-group-id="3787629390-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="ss">m</span><span·class="p"·data-group-id="3787629390-3">}</span></code></pre><p><code·class="inline">?LOG(Arg)</code>·is·then·expand[·...·truncated·by·diffoscope;·len:·139,·SHA:·81aa4b261fc35763d1e49648e33c9024420c1981646c06768de9da41fd3bd87b·...·] | |
| 239 | with·some·simple·trace·output.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="8937063084-1">(</span><span·class="ss">m</span><span·class="p"·data-group-id="8937063084-1">)</span><span·class="w"> | ||
| 240 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 240 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 241 | </span><span·class="p">-</span><span·class="na">if</span><span·class="p"·data-group-id=" | 241 | </span><span·class="p">-</span><span·class="na">if</span><span·class="p"·data-group-id="8937063084-2">(</span><span·class="o">?</span><span·class="n">OTP_RELEASE</span><span·class="w">·</span><span·class="o">>=</span><span·class="w">·</span><span·class="mi">25</span><span·class="p"·data-group-id="8937063084-2">)</span><span·class="p">.</span><span·class="w"> |
| 242 | </span><span·class="c1">%%·Code·that·will·work·in·OTP·25·or·higher</span><span·class="w"> | 242 | </span><span·class="c1">%%·Code·that·will·work·in·OTP·25·or·higher</span><span·class="w"> |
| 243 | </span><span·class="p">-</span><span·class="na">elif</span><span·class="p"·data-group-id=" | 243 | </span><span·class="p">-</span><span·class="na">elif</span><span·class="p"·data-group-id="8937063084-3">(</span><span·class="o">?</span><span·class="n">OTP_RELEASE</span><span·class="w">·</span><span·class="o">>=</span><span·class="w">·</span><span·class="mi">26</span><span·class="p"·data-group-id="8937063084-3">)</span><span·class="p">.</span><span·class="w"> |
| 244 | </span><span·class="c1">%%·Code·that·will·work·in·OTP·26·or·higher</span><span·class="w"> | 244 | </span><span·class="c1">%%·Code·that·will·work·in·OTP·26·or·higher</span><span·class="w"> |
| 245 | </span><span·class="p">-</span><span·class="na">else</span><span·class="p">.</span><span·class="w"> | 245 | </span><span·class="p">-</span><span·class="na">else</span><span·class="p">.</span><span·class="w"> |
| 246 | </span><span·class="c1">%%·Code·that·will·work·in·OTP·24·or·lower.</span><span·class="w"> | 246 | </span><span·class="c1">%%·Code·that·will·work·in·OTP·24·or·lower.</span><span·class="w"> |
| 247 | </span><span·class="p">-</span><span·class="na">endif</span><span·class="p">.</span><span·class="w"> | 247 | </span><span·class="p">-</span><span·class="na">endif</span><span·class="p">.</span><span·class="w"> |
| 248 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>This·code·uses·the·<code·class="inline">OTP_RELEASE</code>·macro·to·conditionally·select·code·depending·on | 248 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>This·code·uses·the·<code·class="inline">OTP_RELEASE</code>·macro·to·conditionally·select·code·depending·on |
| 249 | release.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 249 | release.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="9360614472-1">(</span><span·class="ss">m</span><span·class="p"·data-group-id="9360614472-1">)</span><span·class="w"> |
| 250 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 250 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 251 | </span><span·class="p">-</span><span·class="na">if</span><span·class="p"·data-group-id=" | 251 | </span><span·class="p">-</span><span·class="na">if</span><span·class="p"·data-group-id="9360614472-2">(</span><span·class="o">?</span><span·class="n">OTP_RELEASE</span><span·class="w">·</span><span·class="o">>=</span><span·class="w">·</span><span·class="mi">26</span><span·class="w">·</span><span·class="ow">andalso</span><span·class="w">·</[·...·truncated·by·diffoscope;·len:·212,·SHA:·867e7779bae8b9324a8c00be14182d0d3a6ccaeb574251289f83d425f933ab23·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 252 | </span><span·class="c1">%%·Debugging·code·that·requires·OTP·26·or·later.</span><span·class="w"> | 252 | </span><span·class="c1">%%·Debugging·code·that·requires·OTP·26·or·later.</span><span·class="w"> |
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| Offset 148, 16 lines modified | Offset 148, 16 lines modified | ||
| 148 | single·function·that·constructs·the·map·using·the·map·syntax·and·always·use | 148 | single·function·that·constructs·the·map·using·the·map·syntax·and·always·use |
| 149 | it.</p></li><li><p>Always·update·the·map·using·the·<code·class="inline">:=</code>·operator·(that·is,·requiring·that·an | 149 | it.</p></li><li><p>Always·update·the·map·using·the·<code·class="inline">:=</code>·operator·(that·is,·requiring·that·an |
| 150 | element·with·that·key·already·exists).·The·<code·class="inline">:=</code>·operator·is·slightly·more | 150 | element·with·that·key·already·exists).·The·<code·class="inline">:=</code>·operator·is·slightly·more |
| 151 | efficient,·and·it·helps·catching·mispellings·of·keys.</p></li><li><p>Whenever·possible,·match·multiple·map·elements·at·once.</p></li><li><p>Whenever·possible,·update·multiple·map·elements·at·once.</p></li><li><p>Avoid·default·values·and·the·<a·href="../../lib/stdlib-6.2.1/doc/html/maps.html#get/3"><code·class="inline">maps:get/3</code></a>·function.·If·there·are·default | 151 | efficient,·and·it·helps·catching·mispellings·of·keys.</p></li><li><p>Whenever·possible,·match·multiple·map·elements·at·once.</p></li><li><p>Whenever·possible,·update·multiple·map·elements·at·once.</p></li><li><p>Avoid·default·values·and·the·<a·href="../../lib/stdlib-6.2.1/doc/html/maps.html#get/3"><code·class="inline">maps:get/3</code></a>·function.·If·there·are·default |
| 152 | values,·sharing·of·keys·between·different·instances·of·the·map·will·be·less | 152 | values,·sharing·of·keys·between·different·instances·of·the·map·will·be·less |
| 153 | effective,·and·it·is·not·possible·to·match·multiple·elements·having·default | 153 | effective,·and·it·is·not·possible·to·match·multiple·elements·having·default |
| 154 | values·in·one·go.</p></li><li><p>To·avoid·having·to·deal·with·a·map·that·may·lack·some·keys,·<a·href="../../lib/stdlib-6.2.1/doc/html/maps.html#merge/2"><code·class="inline">maps:merge/2</code></a>·can | 154 | values·in·one·go.</p></li><li><p>To·avoid·having·to·deal·with·a·map·that·may·lack·some·keys,·<a·href="../../lib/stdlib-6.2.1/doc/html/maps.html#merge/2"><code·class="inline">maps:merge/2</code></a>·can |
| 155 | efficiently·add·multiple·default·values.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">DefaultMap</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 155 | efficiently·add·multiple·default·values.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">DefaultMap</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2079503103-1">#{</span><span·class="ss">shoe_size</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">42</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">editor</span><span·class="w">·</s[·...·truncated·by·diffoscope;·len:·124,·SHA:·a10980bdcaff3359266de09985076f65bd950f422473302f714e126105aad692·...·]03-1">}</span><span·class="p">,</span><span·class="w"> |
| 156 | </span><span·class="n">MapWithDefaultsApplied</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">merge</span><span·class="p"·data-group-id=" | 156 | </span><span·class="n">MapWithDefaultsApplied</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">merge</span><span·class="p"·data-group-id="2079503103-2">(</span><span·class="n">DefaultMap</span><span·class="p">,</span><span·class="w">·</span><span·class="n">OtherMap</span><span·class="p"·data-group-id="2079503103-2">)</span></code></pre></li></ul><h2·id="using-maps-as-dictionaries"·class="section-heading"> |
| 157 | ··<a·href="#using-maps-as-dictionaries"·class="hover-link"> | 157 | ··<a·href="#using-maps-as-dictionaries"·class="hover-link"> |
| 158 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 158 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 159 | ··</a> | 159 | ··</a> |
| 160 | ··<span·class="text">Using·Maps·as·Dictionaries</span> | 160 | ··<span·class="text">Using·Maps·as·Dictionaries</span> |
| 161 | </h2> | 161 | </h2> |
| 162 | <p>Using·a·map·as·a·dictionary·implies·the·following·usage·pattern:</p><ul><li>Keys·are·usually·variables·not·known·at·compile-time.</li><li>There·can·be·any·number·of·elements·in·the·map.</li><li>Usually,·no·more·than·one·element·is·looked·up·or·updated·at·once.</li></ul><p>Given·that·usage·pattern,·the·difference·in·performance·between·using·the·map | 162 | <p>Using·a·map·as·a·dictionary·implies·the·following·usage·pattern:</p><ul><li>Keys·are·usually·variables·not·known·at·compile-time.</li><li>There·can·be·any·number·of·elements·in·the·map.</li><li>Usually,·no·more·than·one·element·is·looked·up·or·updated·at·once.</li></ul><p>Given·that·usage·pattern,·the·difference·in·performance·between·using·the·map |
| 163 | syntax·and·the·maps·module·is·usually·small.·Therefore,·which·one·to·use·is | 163 | syntax·and·the·maps·module·is·usually·small.·Therefore,·which·one·to·use·is |
| Offset 167, 18 lines modified | Offset 167, 18 lines modified | ||
| 167 | choice.</li></ul><h2·id="using-maps-as-sets"·class="section-heading"> | 167 | choice.</li></ul><h2·id="using-maps-as-sets"·class="section-heading"> |
| 168 | ··<a·href="#using-maps-as-sets"·class="hover-link"> | 168 | ··<a·href="#using-maps-as-sets"·class="hover-link"> |
| 169 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 169 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 170 | ··</a> | 170 | ··</a> |
| 171 | ··<span·class="text">Using·Maps·as·Sets</span> | 171 | ··<span·class="text">Using·Maps·as·Sets</span> |
| 172 | </h2> | 172 | </h2> |
| 173 | <p>Starting·in·OTP·24,·the·<a·href="../../lib/stdlib-6.2.1/doc/html/sets.html"><code·class="inline">sets</code></a>·module·has·an·option·to·represent·sets·as·maps. | 173 | <p>Starting·in·OTP·24,·the·<a·href="../../lib/stdlib-6.2.1/doc/html/sets.html"><code·class="inline">sets</code></a>·module·has·an·option·to·represent·sets·as·maps. |
| 174 | Examples:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">sets</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id="0 | 174 | Examples:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">sets</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id="7067527798-1">(</span><span·class="p"·data-group-id="7067527798-2">[</span><span·class="p"·data-group-id="7067527798-3">{</span><span·class="ss">version</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="7067527798-3">}</[·...·truncated·by·diffoscope;·len:·99,·SHA:·fb24daa9a5b665096fa3f80a76b912aba9e9007c00447e326e12f86ec9f5c21e·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 175 | </span><span·class="p"·data-group-id="0 | 175 | </span><span·class="p"·data-group-id="7067527798-4">#{</span><span·class="p"·data-group-id="7067527798-4">}</span><span·class="gp·unselectable"> |
| 176 | 2>·</span><span·class="nc">sets</span><span·class="p">:</span><span·class="nf">from_list</span><span·class="p"·data-group-id="0 | 176 | 2>·</span><span·class="nc">sets</span><span·class="p">:</span><span·class="nf">from_list</span><span·class="p"·data-group-id="7067527798-5">(</span><span·class="p"·data-group-id="7067527798-6">[</span><span·class="ss">x</span><span·class="p">,</span><span·class="ss">y</span><span·class="p">,</span><span·class="ss">z</span><span·class="p"·data-group-id="7067527798-6">]</span><span[·...·truncated·by·diffoscope;·len:·376,·SHA:·a235ef4b77b98722b9333ed91bf9fa5ab2dcd4ba603f810fb47dd903e3d1197f·...·]-5">)</span><span·class="p">.</span><span·class="w"> |
| 177 | </span><span·class="p"·data-group-id="0 | 177 | </span><span·class="p"·data-group-id="7067527798-9">#{</span><span·class="ss">x</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="7067527798-10">[</span><span·class="p"·data-group-id="7067527798-10">]</span><span·class="p">,</span>[·...·truncated·by·diffoscope;·len:·483,·SHA:·9158fd1e85dbcb607e1e1d3864201d47279da140b22e6be1f2ebf14c857dab53·...·]-9">}</span></code></pre><p><code·class="inline">sets</code>·backed·by·maps·is·generally·the·most·efficient·set·representation,·with·a |
| 178 | few·possible·exceptions:</p><ul><li><a·href="../../lib/stdlib-6.2.1/doc/html/ordsets.html#intersection/2"><code·class="inline">ordsets:intersection/2</code></a>·can·be·more·efficient·than·<a·href="../../lib/stdlib-6.2.1/doc/html/sets.html#intersection/2"><code·class="inline">sets:intersection/2</code></a>.·If | 178 | few·possible·exceptions:</p><ul><li><a·href="../../lib/stdlib-6.2.1/doc/html/ordsets.html#intersection/2"><code·class="inline">ordsets:intersection/2</code></a>·can·be·more·efficient·than·<a·href="../../lib/stdlib-6.2.1/doc/html/sets.html#intersection/2"><code·class="inline">sets:intersection/2</code></a>.·If |
| 179 | the·intersection·operation·is·frequently·used·and·operations·that·operate·on·a | 179 | the·intersection·operation·is·frequently·used·and·operations·that·operate·on·a |
| 180 | single·element·in·a·set·(such·as·<code·class="inline">is_element/2</code>)·are·avoided,·<a·href="../../lib/stdlib-6.2.1/doc/html/ordsets.html"><code·class="inline">ordsets</code></a>·can | 180 | single·element·in·a·set·(such·as·<code·class="inline">is_element/2</code>)·are·avoided,·<a·href="../../lib/stdlib-6.2.1/doc/html/ordsets.html"><code·class="inline">ordsets</code></a>·can |
| 181 | be·a·better·choice·than·<a·href="../../lib/stdlib-6.2.1/doc/html/sets.html"><code·class="inline">sets</code></a>.</li><li>If·the·intersection·operation·is·frequently·used·and·operations·that·operate | 181 | be·a·better·choice·than·<a·href="../../lib/stdlib-6.2.1/doc/html/sets.html"><code·class="inline">sets</code></a>.</li><li>If·the·intersection·operation·is·frequently·used·and·operations·that·operate |
| 182 | on·a·single·element·in·a·set·(such·as·<code·class="inline">is_element/2</code>)·must·also·be·efficient, | 182 | on·a·single·element·in·a·set·(such·as·<code·class="inline">is_element/2</code>)·must·also·be·efficient, |
| 183 | <a·href="../../lib/stdlib-6.2.1/doc/html/gb_sets.html"><code·class="inline">gb_sets</code></a>·can·potentially·be·a·better·choice·than·<a·href="../../lib/stdlib-6.2.1/doc/html/sets.html"><code·class="inline">sets</code></a>.</li><li>If·the·elements·of·the·set·are·integers·in·a·fairly·compact·range,·the·set·can | 183 | <a·href="../../lib/stdlib-6.2.1/doc/html/gb_sets.html"><code·class="inline">gb_sets</code></a>·can·potentially·be·a·better·choice·than·<a·href="../../lib/stdlib-6.2.1/doc/html/sets.html"><code·class="inline">sets</code></a>.</li><li>If·the·elements·of·the·set·are·integers·in·a·fairly·compact·range,·the·set·can |
| 184 | be·represented·as·an·integer·where·each·bit·represents·an·element·in·the·set. | 184 | be·represented·as·an·integer·where·each·bit·represents·an·element·in·the·set. |
| Offset 203, 18 lines modified | Offset 203, 18 lines modified | ||
| 203 | for·the·runtime·system).</p></li><li><p><strong>N</strong>·-·The·number·of·elements·in·the·map.</p></li><li><p><strong>Keys</strong>·-·A·tuple·with·keys·of·the·map:·<code·class="inline">{Key1,...,KeyN}</code>.·The·keys·are | 203 | for·the·runtime·system).</p></li><li><p><strong>N</strong>·-·The·number·of·elements·in·the·map.</p></li><li><p><strong>Keys</strong>·-·A·tuple·with·keys·of·the·map:·<code·class="inline">{Key1,...,KeyN}</code>.·The·keys·are |
| 204 | sorted.</p></li><li><p><strong>Value1</strong>·-·The·value·corresponding·to·the·first·key·in·the·key·tuple.</p></li><li><p><strong>ValueN</strong>·-·The·value·corresponding·to·the·last·key·in·the·key·tuple.</p></li></ul><p>As·an·example,·let·us·look·at·how·the·map·<code·class="inline">#{a·=>·foo,·z·=>·bar}</code>·is | 204 | sorted.</p></li><li><p><strong>Value1</strong>·-·The·value·corresponding·to·the·first·key·in·the·key·tuple.</p></li><li><p><strong>ValueN</strong>·-·The·value·corresponding·to·the·last·key·in·the·key·tuple.</p></li></ul><p>As·an·example,·let·us·look·at·how·the·map·<code·class="inline">#{a·=>·foo,·z·=>·bar}</code>·is |
| 205 | represented:</p><table><thead><tr><th·style="text-align:·center;">0</th><th·style="text-align:·left;">1</th><th·style="text-align:·center;">2</th><th·style="text-align:·center;">3</th><th·style="text-align:·left;">4</th></tr></thead><tbody><tr><td·style="text-align:·center;"><strong>FLATMAP</strong></td><td·style="text-align:·left;"><em>2</em></td><td·style="text-align:·center;"><code·class="inline">{a,z}</code></td><td·style="text-align:·center;"><code·class="inline">foo</code></td><td·style="text-align:·left;"><code·class="inline">bar</code></td></tr></tbody></table><p><em>Table:·#{a·=>·foo,·z·=>·bar}</em></p><p>Let·us·update·the·map:·<code·class="inline">M#{q·=>·baz}</code>.·The·map·now·looks·like·this:</p><table><thead><tr><th·style="text-align:·center;">0</th><th·style="text-align:·left;">1</th><th·style="text-align:·center;">2</th><th·style="text-align:·center;">3</th><th·style="text-align:·center;">4</th><th·style="text-align:·center;">5</th></tr></thead><tbody><tr><td·style="text-align:·center;"><strong>FLATMAP</strong></td><td·style="text-align:·left;"><em>3</em></td><td·style="text-align:·center;"><code·class="inline">{a,q,z}</code></td><td·style="text-align:·center;"><code·class="inline">foo</code></td><td·style="text-align:·center;"><code·class="inline">baz</code></td><td·style="text-align:·center;"><code·class="inline">bar</code></td></tr></tbody></table><p><em>Table:·#{a·=>·foo,·q·=>·baz,·z·=>·bar}</em></p><p>Finally,·change·the·value·of·one·element:·<code·class="inline">M#{z·:=·bird}</code>.·The·map·now·looks | 205 | represented:</p><table><thead><tr><th·style="text-align:·center;">0</th><th·style="text-align:·left;">1</th><th·style="text-align:·center;">2</th><th·style="text-align:·center;">3</th><th·style="text-align:·left;">4</th></tr></thead><tbody><tr><td·style="text-align:·center;"><strong>FLATMAP</strong></td><td·style="text-align:·left;"><em>2</em></td><td·style="text-align:·center;"><code·class="inline">{a,z}</code></td><td·style="text-align:·center;"><code·class="inline">foo</code></td><td·style="text-align:·left;"><code·class="inline">bar</code></td></tr></tbody></table><p><em>Table:·#{a·=>·foo,·z·=>·bar}</em></p><p>Let·us·update·the·map:·<code·class="inline">M#{q·=>·baz}</code>.·The·map·now·looks·like·this:</p><table><thead><tr><th·style="text-align:·center;">0</th><th·style="text-align:·left;">1</th><th·style="text-align:·center;">2</th><th·style="text-align:·center;">3</th><th·style="text-align:·center;">4</th><th·style="text-align:·center;">5</th></tr></thead><tbody><tr><td·style="text-align:·center;"><strong>FLATMAP</strong></td><td·style="text-align:·left;"><em>3</em></td><td·style="text-align:·center;"><code·class="inline">{a,q,z}</code></td><td·style="text-align:·center;"><code·class="inline">foo</code></td><td·style="text-align:·center;"><code·class="inline">baz</code></td><td·style="text-align:·center;"><code·class="inline">bar</code></td></tr></tbody></table><p><em>Table:·#{a·=>·foo,·q·=>·baz,·z·=>·bar}</em></p><p>Finally,·change·the·value·of·one·element:·<code·class="inline">M#{z·:=·bird}</code>.·The·map·now·looks |
| 206 | like·this:</p><table><thead><tr><th·style="text-align:·center;">0</th><th·style="text-align:·left;">1</th><th·style="text-align:·center;">2</th><th·style="text-align:·center;">3</th><th·style="text-align:·center;">4</th><th·style="text-align:·center;">5</th></tr></thead><tbody><tr><td·style="text-align:·center;"><strong>FLATMAP</strong></td><td·style="text-align:·left;"><em>3</em></td><td·style="text-align:·center;"><code·class="inline">{a,q,z}</code></td><td·style="text-align:·center;"><code·class="inline">foo</code></td><td·style="text-align:·center;"><code·class="inline">baz</code></td><td·style="text-align:·center;"><code·class="inline">bird</code></td></tr></tbody></table><p><em>Table:·#{a·=>·foo,·q·=>·baz,·z·=>·bird}</em></p><p>When·the·value·for·an·existing·key·is·updated,·the·key·tuple·is·not·updated, | 206 | like·this:</p><table><thead><tr><th·style="text-align:·center;">0</th><th·style="text-align:·left;">1</th><th·style="text-align:·center;">2</th><th·style="text-align:·center;">3</th><th·style="text-align:·center;">4</th><th·style="text-align:·center;">5</th></tr></thead><tbody><tr><td·style="text-align:·center;"><strong>FLATMAP</strong></td><td·style="text-align:·left;"><em>3</em></td><td·style="text-align:·center;"><code·class="inline">{a,q,z}</code></td><td·style="text-align:·center;"><code·class="inline">foo</code></td><td·style="text-align:·center;"><code·class="inline">baz</code></td><td·style="text-align:·center;"><code·class="inline">bird</code></td></tr></tbody></table><p><em>Table:·#{a·=>·foo,·q·=>·baz,·z·=>·bird}</em></p><p>When·the·value·for·an·existing·key·is·updated,·the·key·tuple·is·not·updated, |
| 207 | allowing·the·key·tuple·to·be·shared·with·other·instances·of·the·map·that·have | 207 | allowing·the·key·tuple·to·be·shared·with·other·instances·of·the·map·that·have |
| 208 | the·same·keys.·In·fact,·the·key·tuple·can·be·shared·between·all·maps·with·the | 208 | the·same·keys.·In·fact,·the·key·tuple·can·be·shared·between·all·maps·with·the |
| 209 | same·keys·with·some·care.·To·arrange·that,·define·a·function·that·returns·a·map. | 209 | same·keys·with·some·care.·To·arrange·that,·define·a·function·that·returns·a·map. |
| 210 | For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">new</span><span·class="p"·data-group-id=" | 210 | For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">new</span><span·class="p"·data-group-id="8388293953-1">(</span><span·class="p"·data-group-id="8388293953-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 211 | ····</span><span·class="p"·data-group-id=" | 211 | ····</span><span·class="p"·data-group-id="8388293953-2">#{</span><span·class="ss">a</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">default</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">b</span><span·class="w">·</span><spa[·...·truncated·by·diffoscope;·len:·300,·SHA:·374eb6f133bf8246061a9b140285922940359298708c24a9bb4324e33762f38a·...·]-2">}</span><span·class="p">.</span></code></pre><p>Defined·like·this,·the·key·tuple·<code·class="inline">{a,b,c}</code>·will·be·a·global·literal.·To·ensure |
| 212 | that·the·key·tuple·is·shared·when·creating·an·instance·of·the·map,·always·call | 212 | that·the·key·tuple·is·shared·when·creating·an·instance·of·the·map,·always·call |
| 213 | <code·class="inline">new()</code>·and·modify·the·returned·map:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">····</span><span·class="p"·data-group-id=" | 213 | <code·class="inline">new()</code>·and·modify·the·returned·map:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">····</span><span·class="p"·data-group-id="1283976388-1">(</span><span·class="n">SOME_MODULE</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id="1283976388-2">(</span><span·class="p"·data-group-id="1283976388-2">)</span><span·class="p"·data-group-id="1283976388-1[·...·truncated·by·diffoscope;·len:·229,·SHA:·c79d0b51de900a7280fa1c343dfabe9368f72328f22b54c03691332728ad27b9·...·]-3">}</span><span·class="p">.</span></code></pre><p>Using·the·map·syntax·with·small·maps·is·particularly·efficient.·As·long·as·the |
| 214 | keys·are·known·at·compile-time,·the·map·is·updated·in·one·go,·making·the·time·to | 214 | keys·are·known·at·compile-time,·the·map·is·updated·in·one·go,·making·the·time·to |
| 215 | update·a·map·essentially·constant·regardless·of·the·number·of·keys·updated.·The | 215 | update·a·map·essentially·constant·regardless·of·the·number·of·keys·updated.·The |
| 216 | same·goes·for·matching.·(When·the·keys·are·variables,·one·or·more·of·the·keys | 216 | same·goes·for·matching.·(When·the·keys·are·variables,·one·or·more·of·the·keys |
| 217 | could·be·identical,·so·the·operations·need·to·be·performed·sequentially·from | 217 | could·be·identical,·so·the·operations·need·to·be·performed·sequentially·from |
| 218 | left·to·right.)</p><p>The·memory·size·for·a·small·map·is·the·size·of·all·keys·and·values·plus·5·words. | 218 | left·to·right.)</p><p>The·memory·size·for·a·small·map·is·the·size·of·all·keys·and·values·plus·5·words. |
| 219 | See·<a·href="memory.html">Memory</a>·for·more·information·about·memory·sizes.</p><h3·id="how-large-maps-are-implemented"·class="section-heading"> | 219 | See·<a·href="memory.html">Memory</a>·for·more·information·about·memory·sizes.</p><h3·id="how-large-maps-are-implemented"·class="section-heading"> |
| 220 | ··<a·href="#how-large-maps-are-implemented"·class="hover-link"> | 220 | ··<a·href="#how-large-maps-are-implemented"·class="hover-link"> |
| Offset 241, 21 lines modified | Offset 241, 21 lines modified | ||
| 241 | ··<a·href="#using-the-map-syntax"·class="hover-link"> | 241 | ··<a·href="#using-the-map-syntax"·class="hover-link"> |
| 242 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 242 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 243 | ··</a> | 243 | ··</a> |
| 244 | ··<span·class="text">Using·the·Map·Syntax</span> | 244 | ··<span·class="text">Using·the·Map·Syntax</span> |
| 245 | </h2> | 245 | </h2> |
| 246 | <p>Using·the·map·syntax·is·usually·slightly·more·efficient·than·using·the | 246 | <p>Using·the·map·syntax·is·usually·slightly·more·efficient·than·using·the |
| 247 | corresponding·function·in·the·<a·href="../../lib/stdlib-6.2.1/doc/html/maps.html"><code·class="inline">maps</code></a>·module.</p><p>The·gain·in·efficiency·for·the·map·syntax·is·more·noticeable·for·the·following | 247 | corresponding·function·in·the·<a·href="../../lib/stdlib-6.2.1/doc/html/maps.html"><code·class="inline">maps</code></a>·module.</p><p>The·gain·in·efficiency·for·the·map·syntax·is·more·noticeable·for·the·following |
| 248 | operations·that·can·only·be·achieved·using·the·map·syntax:</p><ul><li>Matching·multiple·literal·keys</li><li>Updating·multiple·literal·keys</li><li>Adding·multiple·literal·keys·to·a·map</li></ul><p>For·example:</p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Map</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Map1</span><span·class="p"·data-group-id=" | 248 | operations·that·can·only·be·achieved·using·the·map·syntax:</p><ul><li>Matching·multiple·literal·keys</li><li>Updating·multiple·literal·keys</li><li>Adding·multiple·literal·keys·to·a·map</li></ul><p>For·example:</p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Map</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Map1</span><span·class="p"·data-group-id="0551401577-1">#{</span><span·class="ss">x</span><span·class="w">·</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">X</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">y</span><span·class="w">·</span><span·class="p[·...·truncated·by·diffoscope;·len:·820,·SHA:·3efee150d7c28105869ba7f9a2e783f8199b29a27284a7939a8b3e3637251472·...·]-1">)</span><span·class="p">,</span><span·class="w"> |
| 249 | </span><span·class="n">Map3</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">update</span><span·class="p"·data-group-id="6 | 249 | </span><span·class="n">Map3</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">update</span><span·class="p"·data-group-id="6547614562-2">(</span><span·class="ss">y</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Y</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Map2</span><span·class="p"·data-group-id="6547614562-2">)</span><span·class="p">,</span><span·class="w"> |
| 250 | </span><span·class="n">Map</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">update</span><span·class="p"·data-group-id="6 | 250 | </span><span·class="n">Map</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">update</span><span·class="p"·data-group-id="6547614562-3">(</span><span·class="ss">z</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Z</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Map3</span><span·class="p"·data-group-id="6547614562-3">)</span></code></pre><p>If·the·map·is·a·small·map,·the·first·example·runs·roughly·three·times·as·fast.</p><p>Note·that·for·variable·keys,·the·elements·are·updated·sequentially·from·left·to |
| 251 | right.·For·example,·given·the·following·update·with·variable·keys:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Map</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Map1</span><span·class="p"·data-group-id="2 | 251 | right.·For·example,·given·the·following·update·with·variable·keys:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Map</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Map1</span><span·class="p"·data-group-id="9288958855-1">#{</span><span·class="n">Key1</span><span·class="w">·</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">X</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Key2</span><span·class="w">·</span><span·clas[·...·truncated·by·diffoscope;·len:·276,·SHA:·0b8f8901c7a7e36cad5ced22b4ff091628d5a1d510839976adb5946dbcbaca49·...·]-1">}</span></code></pre><p>the·compiler·rewrites·it·like·this·to·ensure·that·the·updates·are·applied·from |
| 252 | left·to·right:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Map2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Map1</span><span·class="p"·data-group-id=" | 252 | left·to·right:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Map2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Map1</span><span·class="p"·data-group-id="8798017685-1">#{</span><span·class="n">Key1</span><span·class="w">·</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">X</span><span·class="p"·data-group-id="8798017685-1">}</span><span·class="p">,</span><span·class="w"> |
| 253 | </span><span·class="n">Map3</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Map2</span><span·class="p"·data-group-id=" | 253 | </span><span·class="n">Map3</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Map2</span><span·class="p"·data-group-id="8798017685-2">#{</span><span·class="n">Key2</span><span·class="w">·</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">Y</span><span·class="p"·data-group-id="8798017685-2">}</span><span·class="p">,</span><span·class="w"> |
| 254 | </span><span·class="n">Map</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Map3</span><span·class="p"·data-group-id=" | 254 | </span><span·class="n">Map</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Map3</span><span·class="p"·data-group-id="8798017685-3">#{</span><span·class="n">Key3</span><span·class="w">·</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">Z</span><span·class="p"·data-group-id="8798017685-3">}</span></code></pre><p>If·a·key·is·known·to·exist·in·a·map,·using·the·<code·class="inline">:=</code>·operator·is·slightly·more |
| 255 | efficient·than·using·the·<code·class="inline">=></code>·operator·for·a·small·map.</p><h2·id="using-the-functions-in-the-maps-module"·class="section-heading"> | 255 | efficient·than·using·the·<code·class="inline">=></code>·operator·for·a·small·map.</p><h2·id="using-the-functions-in-the-maps-module"·class="section-heading"> |
| 256 | ··<a·href="#using-the-functions-in-the-maps-module"·class="hover-link"> | 256 | ··<a·href="#using-the-functions-in-the-maps-module"·class="hover-link"> |
| 257 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 257 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 258 | ··</a> | 258 | ··</a> |
| 259 | ··<span·class="text">Using·the·Functions·in·the·maps·Module</span> | 259 | ··<span·class="text">Using·the·Functions·in·the·maps·Module</span> |
| 260 | </h2> | 260 | </h2> |
| 261 | <p>Here·follows·some·notes·about·most·of·the·functions·in·the·<code·class="inline">maps</code>·module.·For | 261 | <p>Here·follows·some·notes·about·most·of·the·functions·in·the·<code·class="inline">maps</code>·module.·For |
| Offset 306, 23 lines modified | Offset 306, 23 lines modified | ||
| 306 | ··<a·href="#maps-get-3"·class="hover-link"> | 306 | ··<a·href="#maps-get-3"·class="hover-link"> |
| 307 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 307 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 308 | ··</a> | 308 | ··</a> |
| 309 | ··<span·class="text">maps:get/3</span> | 309 | ··<span·class="text">maps:get/3</span> |
| 310 | </h3> | 310 | </h3> |
| 311 | <p>As·an·optimization,·the·compiler·will·rewrite·a·call·to·<a·href="../../lib/stdlib-6.2.1/doc/html/maps.html#get/3"><code·class="inline">maps:get/3</code></a>·to·Erlang | 311 | <p>As·an·optimization,·the·compiler·will·rewrite·a·call·to·<a·href="../../lib/stdlib-6.2.1/doc/html/maps.html#get/3"><code·class="inline">maps:get/3</code></a>·to·Erlang |
| 312 | code·similar·to·the·following:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Result</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="k">case</span><span·class="w">·</span><span·class="n">Map</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> | 312 | code·similar·to·the·following:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Result</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="k">case</span><span·class="w">·</span><span·class="n">Map</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 313 | ·············</span><span·class="p"·data-group-id=" | 313 | ·············</span><span·class="p"·data-group-id="5580022529-1">#{</span><span·class="n">Key</span><span·class="w">·</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">Value</span><span·class="p"·data-group-id="5580022529-1">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Value</span><span·class="p">;</span><span·class="w"> |
| 314 | ·············</span><span·class="p"·data-group-id=" | 314 | ·············</span><span·class="p"·data-group-id="5580022529-2">#{</span><span·class="p"·data-group-id="5580022529-2">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Default</span><span·class="w"> |
| 315 | ·········</span><span·class="k">end</span></code></pre><p>This·is·reasonably·efficient,·but·if·a·small·map·is·used·as·an·alternative·to | 315 | ·········</span><span·class="k">end</span></code></pre><p>This·is·reasonably·efficient,·but·if·a·small·map·is·used·as·an·alternative·to |
| 316 | using·a·record·it·is·often·better·not·to·rely·on·default·values·as·it·prevents | 316 | using·a·record·it·is·often·better·not·to·rely·on·default·values·as·it·prevents |
| 317 | sharing·of·keys,·which·may·in·the·end·use·more·memory·than·what·you·save·from | 317 | sharing·of·keys,·which·may·in·the·end·use·more·memory·than·what·you·save·from |
| 318 | not·storing·default·values·in·the·map.</p><p>If·default·values·are·nevertheless·required,·instead·of·calling·<a·href="../../lib/stdlib-6.2.1/doc/html/maps.html#get/3"><code·class="inline">maps:get/3</code></a> | 318 | not·storing·default·values·in·the·map.</p><p>If·default·values·are·nevertheless·required,·instead·of·calling·<a·href="../../lib/stdlib-6.2.1/doc/html/maps.html#get/3"><code·class="inline">maps:get/3</code></a> |
| 319 | multiple·times,·consider·putting·the·default·values·in·a·map·and·merging·that | 319 | multiple·times,·consider·putting·the·default·values·in·a·map·and·merging·that |
| 320 | map·with·the·other·map:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">DefaultMap</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 320 | map·with·the·other·map:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">DefaultMap</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="3825800029-1">#{</span><span·class="n">Key1</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="n">Value2</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Key2</span><span·class="w">·</span><s[·...·truncated·by·diffoscope;·len:·420,·SHA:·0e1087588b659f651664704883ec494dec5d9e34a513836a66e60cadacb05591·...·]-1">}</span><span·class="p">,</span><span·class="w"> |
| 321 | </span><span·class="n">MapWithDefaultsApplied</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">merge</span><span·class="p"·data-group-id=" | 321 | </span><span·class="n">MapWithDefaultsApplied</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">merge</span><span·class="p"·data-group-id="3825800029-2">(</span><span·class="n">DefaultMap</span><span·class="p">,</span><span·class="w">·</span><span·class="n">OtherMap</span><span·class="p"·data-group-id="3825800029-2">)</span></code></pre><p>This·helps·share·keys·between·the·default·map·and·the·one·you·applied·defaults |
| 322 | to,·as·long·as·the·default·map·contains·<em>all</em>·the·keys·that·will·ever·be·used | 322 | to,·as·long·as·the·default·map·contains·<em>all</em>·the·keys·that·will·ever·be·used |
| 323 | and·not·just·the·ones·with·default·values.·Whether·this·is·faster·than·calling | 323 | and·not·just·the·ones·with·default·values.·Whether·this·is·faster·than·calling |
| 324 | <a·href="../../lib/stdlib-6.2.1/doc/html/maps.html#get/3"><code·class="inline">maps:get/3</code></a>·multiple·times·depends·on·the·size·of·the·map·and·the·number·of | 324 | <a·href="../../lib/stdlib-6.2.1/doc/html/maps.html#get/3"><code·class="inline">maps:get/3</code></a>·multiple·times·depends·on·the·size·of·the·map·and·the·number·of |
| 325 | default·values.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Change</h4><p>Before·OTP·26.0·<a·href="../../lib/stdlib-6.2.1/doc/html/maps.html#get/3"><code·class="inline">maps:get/3</code></a>·was·implemented·by·calling·the·function·instead | 325 | default·values.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Change</h4><p>Before·OTP·26.0·<a·href="../../lib/stdlib-6.2.1/doc/html/maps.html#get/3"><code·class="inline">maps:get/3</code></a>·was·implemented·by·calling·the·function·instead |
| 326 | of·rewriting·it·as·an·Erlang·expression.·It·is·now·slightly·faster·but·can·no | 326 | of·rewriting·it·as·an·Erlang·expression.·It·is·now·slightly·faster·but·can·no |
| 327 | longer·be·traced.</p></section><h3·id="maps-intersect-2-maps-intersect_with-3"·class="section-heading"> | 327 | longer·be·traced.</p></section><h3·id="maps-intersect-2-maps-intersect_with-3"·class="section-heading"> |
| 328 | ··<a·href="#maps-intersect-2-maps-intersect_with-3"·class="hover-link"> | 328 | ··<a·href="#maps-intersect-2-maps-intersect_with-3"·class="hover-link"> |
| Offset 118, 20 lines modified | Offset 118, 20 lines modified | ||
| 118 | <h2·id="module-syntax"·class="section-heading"> | 118 | <h2·id="module-syntax"·class="section-heading"> |
| 119 | ··<a·href="#module-syntax"·class="hover-link"> | 119 | ··<a·href="#module-syntax"·class="hover-link"> |
| 120 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 120 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 121 | ··</a> | 121 | ··</a> |
| 122 | ··<span·class="text">Module·Syntax</span> | 122 | ··<span·class="text">Module·Syntax</span> |
| 123 | </h2> | 123 | </h2> |
| 124 | <p>Erlang·code·is·divided·into·<em>modules</em>.·A·module·consists·of·a·sequence·of | 124 | <p>Erlang·code·is·divided·into·<em>modules</em>.·A·module·consists·of·a·sequence·of |
| 125 | attributes·and·function·declarations,·each·terminated·by·a·period·(<code·class="inline">.</code>).</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 125 | attributes·and·function·declarations,·each·terminated·by·a·period·(<code·class="inline">.</code>).</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="7650690594-1">(</span><span·class="ss">m</span><span·class="p"·data-group-id="7650690594-1">)</span><span·class="p">.</span><span·class="w">··········</span><span·class="c1">%·module·attribute</span><span·class="w"> |
| 126 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 126 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="7650690594-2">(</span><span·class="p"·data-group-id="7650690594-3">[</span><span·class="ss">fact</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id="7650690594-3">]</span><span·class="p"·data-group-id="7650690594-2">)</span><span·class="p">.</span><span·class="w">···</span><span·class="c1">%·module·attribute</span><span·class="w"> |
| 127 | </span><span·class="nf">fact</span><span·class="p"·data-group-id=" | 127 | </span><span·class="nf">fact</span><span·class="p"·data-group-id="7650690594-4">(</span><span·class="n">N</span><span·class="p"·data-group-id="7650690594-4">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="n">N</span><span·class="o">></span><span·class="mi">0</span><span·class="w">·</span><span·class="p">-></span><span·class="w">··</span><span·class="c1">%·beginning·of·function·declaration</span><span·class="w"> |
| 128 | ····</span><span·class="n">N</span><span·class="w">·</span><span·class="o">*</span><span·class="w">·</span><span·class="nf">fact</span><span·class="p"·data-group-id=" | 128 | ····</span><span·class="n">N</span><span·class="w">·</span><span·class="o">*</span><span·class="w">·</span><span·class="nf">fact</span><span·class="p"·data-group-id="7650690594-5">(</span><span·class="n">N</span><span·class="o">-</span><span·class="mi">1</span><span·class="p"·data-group-id="7650690594-5">)</span><span·class="p">;</span><span·class="w">···</span><span·class="c1">%··|</span><span·class="w"> |
| 129 | </span><span·class="nf">fact</span><span·class="p"·data-group-id=" | 129 | </span><span·class="nf">fact</span><span·class="p"·data-group-id="7650690594-6">(</span><span·class="mi">0</span><span·class="p"·data-group-id="7650690594-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">···········</span><span·class="c1">%··|</span><span·class="w"> |
| 130 | ····</span><span·class="mi">1</span><span·class="p">.</span><span·class="w">···············</span><span·class="c1">%·end·of·function·declaration</span></code></pre><p>For·a·description·of·function·declarations,·see | 130 | ····</span><span·class="mi">1</span><span·class="p">.</span><span·class="w">···············</span><span·class="c1">%·end·of·function·declaration</span></code></pre><p>For·a·description·of·function·declarations,·see |
| 131 | <a·href="ref_man_functions.html">Function·Declaration·Syntax</a>.</p><h2·id="module-attributes"·class="section-heading"> | 131 | <a·href="ref_man_functions.html">Function·Declaration·Syntax</a>.</p><h2·id="module-attributes"·class="section-heading"> |
| 132 | ··<a·href="#module-attributes"·class="hover-link"> | 132 | ··<a·href="#module-attributes"·class="hover-link"> |
| 133 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 133 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 134 | ··</a> | 134 | ··</a> |
| 135 | ··<span·class="text">Module·Attributes</span> | 135 | ··<span·class="text">Module·Attributes</span> |
| 136 | </h2> | 136 | </h2> |
| Offset 176, 71 lines modified | Offset 176, 71 lines modified | ||
| 176 | meaning.</p></section></li></ul><h3·id="behaviour-module-attribute"·class="section-heading"> | 176 | meaning.</p></section></li></ul><h3·id="behaviour-module-attribute"·class="section-heading"> |
| 177 | ··<a·href="#behaviour-module-attribute"·class="hover-link"> | 177 | ··<a·href="#behaviour-module-attribute"·class="hover-link"> |
| 178 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 178 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 179 | ··</a> | 179 | ··</a> |
| 180 | ··<span·class="text">Behaviour·Module·Attribute</span> | 180 | ··<span·class="text">Behaviour·Module·Attribute</span> |
| 181 | </h3> | 181 | </h3> |
| 182 | <p>It·is·possible·to·specify·that·the·module·is·the·callback·module·for·a | 182 | <p>It·is·possible·to·specify·that·the·module·is·the·callback·module·for·a |
| 183 | <em>behaviour</em>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">behaviour</span><span·class="p"·data-group-id=" | 183 | <em>behaviour</em>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">behaviour</span><span·class="p"·data-group-id="3424530896-1">(</span><span·class="n">Behaviour</span><span·class="p"·data-group-id="3424530896-1">)</span><span·class="p">.</span></code></pre><p>The·atom·<code·class="inline">Behaviour</code>·gives·the·name·of·the·behaviour,·which·can·be·a |
| 184 | user-defined·behaviour·or·one·of·the·following·OTP·standard·behaviours:</p><ul><li><code·class="inline">gen_server</code></li><li><code·class="inline">gen_statem</code></li><li><code·class="inline">gen_event</code></li><li><code·class="inline">supervisor</code></li></ul><p>The·spelling·<code·class="inline">behavior</code>·is·also·accepted.</p><p>The·callback·functions·of·the·module·can·be·specified·either·directly·by·the | 184 | user-defined·behaviour·or·one·of·the·following·OTP·standard·behaviours:</p><ul><li><code·class="inline">gen_server</code></li><li><code·class="inline">gen_statem</code></li><li><code·class="inline">gen_event</code></li><li><code·class="inline">supervisor</code></li></ul><p>The·spelling·<code·class="inline">behavior</code>·is·also·accepted.</p><p>The·callback·functions·of·the·module·can·be·specified·either·directly·by·the |
| 185 | exported·function·<code·class="inline">behaviour_info/1</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">behaviour_info</span><span·class="p"·data-group-id=" | 185 | exported·function·<code·class="inline">behaviour_info/1</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">behaviour_info</span><span·class="p"·data-group-id="2413211464-1">(</span><span·class="ss">callbacks</span><span·class="p"·data-group-id="2413211464-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Callbacks</span><span·class="p">.</span></code></pre><p>[·...·truncated·by·diffoscope;·len:·368,·SHA:·2916e33b0070f02984533cc7a037eabb4196b878dc7c77f540f3608125b59c0c·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Result</span><span·class="p">.</span></code></pre><p>Here,·<code·class="inline">Arguments</code>·is·a·list·of·zero·or·more·arguments.·The·<code·class="inline">-callback</code>·attribute |
| 186 | is·to·be·preferred·since·the·extra·type·information·can·be·used·by·tools·to | 186 | is·to·be·preferred·since·the·extra·type·information·can·be·used·by·tools·to |
| 187 | produce·documentation·or·find·discrepancies.</p><p>Read·more·about·behaviours·and·callback·modules·in | 187 | produce·documentation·or·find·discrepancies.</p><p>Read·more·about·behaviours·and·callback·modules·in |
| 188 | <a·href="../../doc/system/spec_proc.html#behaviours">OTP·Design·Principles</a>.</p><h3·id="record-definitions"·class="section-heading"> | 188 | <a·href="../../doc/system/spec_proc.html#behaviours">OTP·Design·Principles</a>.</p><h3·id="record-definitions"·class="section-heading"> |
| 189 | ··<a·href="#record-definitions"·class="hover-link"> | 189 | ··<a·href="#record-definitions"·class="hover-link"> |
| 190 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 190 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 191 | ··</a> | 191 | ··</a> |
| 192 | ··<span·class="text">Record·Definitions</span> | 192 | ··<span·class="text">Record·Definitions</span> |
| 193 | </h3> | 193 | </h3> |
| 194 | <p>The·same·syntax·as·for·module·attributes·is·used·for·record·definitions:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 194 | <p>The·same·syntax·as·for·module·attributes·is·used·for·record·definitions:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="6055374782-1">(</span><span·class="n">Record</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Fields</span><span·class="p"·data-group-id="6055374782-1">)</span><span·class="p">.</span></code></pre><p>Record·definitions·are·allowed·anywhere·in·a·module,·also·among·the·function |
| 195 | declarations.·Read·more·in·<a·href="ref_man_records.html">Records</a>.</p><h3·id="preprocessor"·class="section-heading"> | 195 | declarations.·Read·more·in·<a·href="ref_man_records.html">Records</a>.</p><h3·id="preprocessor"·class="section-heading"> |
| 196 | ··<a·href="#preprocessor"·class="hover-link"> | 196 | ··<a·href="#preprocessor"·class="hover-link"> |
| 197 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 197 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 198 | ··</a> | 198 | ··</a> |
| 199 | ··<span·class="text">Preprocessor</span> | 199 | ··<span·class="text">Preprocessor</span> |
| 200 | </h3> | 200 | </h3> |
| 201 | <p>The·same·syntax·as·for·module·attributes·is·used·by·the·preprocessor,·which | 201 | <p>The·same·syntax·as·for·module·attributes·is·used·by·the·preprocessor,·which |
| 202 | supports·file·inclusion,·macros,·and·conditional·compilation:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include</span><span·class="p"·data-group-id=" | 202 | supports·file·inclusion,·macros,·and·conditional·compilation:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include</span><span·class="p"·data-group-id="0047192853-1">(</span><span·class="s">"SomeFile.hrl"</span><span·class="p"·data-group-id="0047192853-1">)</span><span·class="p">.</span><span·class="w"> |
| 203 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id=" | 203 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="0047192853-2">(</span><span·class="n">Macro</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Replacement</span><span·class="p"·data-group-id="0047192853-2">)</span><span·class="p">.</span></code></pre><p>Read·more·in·<a·href="macros.html">Preprocessor</a>.</p><h3·id="setting-file-and-line"·class="section-heading"> |
| 204 | ··<a·href="#setting-file-and-line"·class="hover-link"> | 204 | ··<a·href="#setting-file-and-line"·class="hover-link"> |
| 205 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 205 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 206 | ··</a> | 206 | ··</a> |
| 207 | ··<span·class="text">Setting·File·and·Line</span> | 207 | ··<span·class="text">Setting·File·and·Line</span> |
| 208 | </h3> | 208 | </h3> |
| 209 | <p>The·same·syntax·as·for·module·attributes·is·used·for·changing·the·pre-defined | 209 | <p>The·same·syntax·as·for·module·attributes·is·used·for·changing·the·pre-defined |
| 210 | macros·<code·class="inline">?FILE</code>·and·<code·class="inline">?LINE</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">file</span><span·class="p"·data-group-id=" | 210 | macros·<code·class="inline">?FILE</code>·and·<code·class="inline">?LINE</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">file</span><span·class="p"·data-group-id="3227685583-1">(</span><span·class="n">File</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Line</span><span·class="p"·data-group-id="3227685583-1">)</span><span·class="p">.</span></code></pre><p>This·attribute·is·used·by·tools,·such·as·Yecc,·to·inform·the·compiler·that·the |
| 211 | source·program·is·generated·by·another·tool.·It·also·indicates·the | 211 | source·program·is·generated·by·another·tool.·It·also·indicates·the |
| 212 | correspondence·of·source·files·to·lines·of·the·original·user-written·file,·from | 212 | correspondence·of·source·files·to·lines·of·the·original·user-written·file,·from |
| 213 | which·the·source·program·is·produced.</p><h3·id="types-and-function-specifications"·class="section-heading"> | 213 | which·the·source·program·is·produced.</p><h3·id="types-and-function-specifications"·class="section-heading"> |
| 214 | ··<a·href="#types-and-function-specifications"·class="hover-link"> | 214 | ··<a·href="#types-and-function-specifications"·class="hover-link"> |
| 215 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 215 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 216 | ··</a> | 216 | ··</a> |
| 217 | ··<span·class="text">Types·and·function·specifications</span> | 217 | ··<span·class="text">Types·and·function·specifications</span> |
| 218 | </h3> | 218 | </h3> |
| 219 | <p>A·similar·syntax·as·for·module·attributes·is·used·for·specifying·types·and | 219 | <p>A·similar·syntax·as·for·module·attributes·is·used·for·specifying·types·and |
| 220 | function·specifications:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">type</span><span·class="w">·</span><span·class="nf">my_type</span><span·class="p"·data-group-id="0624380944-1">(</span><span·class="p"·data-group-id="0624380944-1">)</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="0624380944-2">(</span><span·class="p"·data-group-id="0624380944-2">)</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="0624380944-3">(</span><span·class="p"·data-group-id="0624380944-3">)</span><span·class="p">.</span><span·class="w"> | ||
| 221 | 220 | function·specifications:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">type</span><span·class="w">·</span><span·class="nf">my_type</span><span·class="p"·data-group-id="0132866324-1">(</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·512,·SHA:·9375ce2bde09f033cfb47bf16ff9cce4b7aaa902e1a8aaa10fc9f7a7e6f1c03b·...·] | |
| 221 | </span><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">my_function</span><span·class="p"·data-group-id="0132866324-4">(</span><span·class="nf">integer</span><span·class="p"·data-group-id="0132866324-5">(</span><span·class="p"·data-group-id="0132866324-5">)</span><span·class="p"·data-group-id="0132866324-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="0132866324-6">(</span><span·class="p"·data-group-id="0132866324-6">)</span><span·class="p">.</span></code></pre><p>Read·more·in·<a·href="typespec.html">Types·and·Function·specifications</a>.</p><p>The·description·is·based·on | ||
| 222 | <a·href="http://www.erlang.org/eeps/eep-0008.html">EEP8·-·Types·and·function·specifications</a>, | 222 | <a·href="http://www.erlang.org/eeps/eep-0008.html">EEP8·-·Types·and·function·specifications</a>, |
| 223 | which·is·not·to·be·further·updated.</p><h3·id="documentation-attributes"·class="section-heading"> | 223 | which·is·not·to·be·further·updated.</p><h3·id="documentation-attributes"·class="section-heading"> |
| 224 | ··<a·href="#documentation-attributes"·class="hover-link"> | 224 | ··<a·href="#documentation-attributes"·class="hover-link"> |
| 225 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 225 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 226 | ··</a> | 226 | ··</a> |
| 227 | ··<span·class="text">Documentation·attributes</span> | 227 | ··<span·class="text">Documentation·attributes</span> |
| 228 | </h3> | 228 | </h3> |
| 229 | <p>The·module·attribute·<code·class="inline">-doc(Documentation)</code>·is·used·to·provide·user·documentation | 229 | <p>The·module·attribute·<code·class="inline">-doc(Documentation)</code>·is·used·to·provide·user·documentation |
| 230 | for·a·function/type/callback:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">doc</span><span·class="p"·data-group-id=" | 230 | for·a·function/type/callback:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">doc</span><span·class="p"·data-group-id="6237798602-1">(</span><span·class="s">"Example·documentation"</span><span·class="p"·data-group-id="6237798602-1">)</span><span·class="p">.</span><span·class="w"> |
| 231 | </span><span·class="nf">example</span><span·class="p"·data-group-id=" | 231 | </span><span·class="nf">example</span><span·class="p"·data-group-id="6237798602-2">(</span><span·class="p"·data-group-id="6237798602-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="p">.</span></code></pre><p>The·attribute·should·be·placed·just·before·the·entity·it·documents.The |
| 232 | parenthesis·are·optional·around·<code·class="inline">Documentation</code>.·The·allowed·values·for | 232 | parenthesis·are·optional·around·<code·class="inline">Documentation</code>.·The·allowed·values·for |
| 233 | <code·class="inline">Documentation</code>·are:</p><ul><li><p><strong><a·href="data_types.html#string">literal·string</a>·or | 233 | <code·class="inline">Documentation</code>·are:</p><ul><li><p><strong><a·href="data_types.html#string">literal·string</a>·or |
| 234 | <a·href="expressions.html#unicode-segments">utf-8·encoded·binary·string</a></strong>·-·The·string | 234 | <a·href="expressions.html#unicode-segments">utf-8·encoded·binary·string</a></strong>·-·The·string |
| 235 | documenting·the·entity.·Any·literal·string·is·allowed,·so·both | 235 | documenting·the·entity.·Any·literal·string·is·allowed,·so·both |
| 236 | <a·href="data_types.html#tqstring">triple·quoted·strings</a>·and | 236 | <a·href="data_types.html#tqstring">triple·quoted·strings</a>·and |
| 237 | <a·href="data_types.html#sigil">sigils</a>·that·translate·to·literal·strings·can·be·used. | 237 | <a·href="data_types.html#sigil">sigils</a>·that·translate·to·literal·strings·can·be·used. |
| 238 | The·following·examples·are·equivalent:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">doc</span><span·class="p"·data-group-id=" | 238 | The·following·examples·are·equivalent:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">doc</span><span·class="p"·data-group-id="6765988774-1">(</span><span·class="s">"Example·\"docs\""</span><span·class="p"·data-group-id="6765988774-1">)</span><span·class="p">.</span><span·class="w"> |
| 239 | </span><span·class="p">-</span><span·class="na">doc</span><span·class="p"·data-group-id=" | 239 | </span><span·class="p">-</span><span·class="na">doc</span><span·class="p"·data-group-id="6765988774-2">(</span><span·class="p"·data-group-id="6765988774-3"><<</span><span·class="s">"Example·\"docs\""</span><span·class="o">/</span><span·class="ss">utf8</span><span·class="p"·data-group-id="6765988774-3">>></span><[·...·truncated·by·diffoscope;·len:·40,·SHA:·483d36b29c4f17d867a7eaebb7f31979a4c8366f0ec4137d972001a1c569e34e·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 240 | </span><span·class="p">-</span><span·class="na">doc</span><span·class="w">·</span><span·class="s">~S/Example·"docs"/</span><span·class="p">.</span><span·class="w"> | 240 | </span><span·class="p">-</span><span·class="na">doc</span><span·class="w">·</span><span·class="s">~S/Example·"docs"/</span><span·class="p">.</span><span·class="w"> |
| 241 | </span><span·class="p">-</span><span·class="na">doc</span><span·class="w">·</span><span·class="s">""</span><span·class="s">" | 241 | </span><span·class="p">-</span><span·class="na">doc</span><span·class="w">·</span><span·class="s">""</span><span·class="s">" |
| 242 | ···Example·"</span><span·class="ss">docs</span><span·class="s">" | 242 | ···Example·"</span><span·class="ss">docs</span><span·class="s">" |
| 243 | ···"</span><span·class="s">""</span><span·class="w"> | 243 | ···"</span><span·class="s">""</span><span·class="w"> |
| 244 | </span><span·class="p">-</span><span·class="na">doc</span><span·class="w">·</span><span·class="s">~B|Example·"docs"|</span><span·class="p">.</span></code></pre><p>For·clarity·it·is·recommended·to·use·either·normal·<code·class="inline">"strings"</code>·or·triple | 244 | </span><span·class="p">-</span><span·class="na">doc</span><span·class="w">·</span><span·class="s">~B|Example·"docs"|</span><span·class="p">.</span></code></pre><p>For·clarity·it·is·recommended·to·use·either·normal·<code·class="inline">"strings"</code>·or·triple |
| 245 | quoted·strings·for·documentation·attributes.</p></li><li><p><strong><code·class="inline">{file,</code>·<a·href="../../lib/kernel-10.2.3/doc/html/file.html#t:name/0"><code·class="inline">file:name/0</code></a>·<code·class="inline">}</code></strong>·-·Read·the·contents·of·filename·and·use | 245 | quoted·strings·for·documentation·attributes.</p></li><li><p><strong><code·class="inline">{file,</code>·<a·href="../../lib/kernel-10.2.3/doc/html/file.html#t:name/0"><code·class="inline">file:name/0</code></a>·<code·class="inline">}</code></strong>·-·Read·the·contents·of·filename·and·use |
| 246 | that·as·the·documentation·string.</p></li><li><p><strong><code·class="inline">false</code></strong>·-·Set·the·current·entity·as·hidden,·that·is,·it·should·not·be | 246 | that·as·the·documentation·string.</p></li><li><p><strong><code·class="inline">false</code></strong>·-·Set·the·current·entity·as·hidden,·that·is,·it·should·not·be |
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| 253 | ··<a·href="#the-feature-directive"·class="hover-link"> | 253 | ··<a·href="#the-feature-directive"·class="hover-link"> |
| 254 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 254 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 255 | ··</a> | 255 | ··</a> |
| 256 | ··<span·class="text">The·feature·directive</span> | 256 | ··<span·class="text">The·feature·directive</span> |
| 257 | </h2> | 257 | </h2> |
| 258 | <p>While·not·a·module·attribute,·but·rather·a·directive·(since·it·might·affect | 258 | <p>While·not·a·module·attribute,·but·rather·a·directive·(since·it·might·affect |
| 259 | syntax),·there·is·the·<code·class="inline">-feature(..)</code>·directive·used·for·enabling·and·disabling | 259 | syntax),·there·is·the·<code·class="inline">-feature(..)</code>·directive·used·for·enabling·and·disabling |
| 260 | <a·href="../../doc/system/features.html#features">features</a>.</p><p>The·syntax·is·similar·to·that·of·an·attribute,·but·has·two·arguments:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">feature</span><span·class="p"·data-group-id=" | 260 | <a·href="../../doc/system/features.html#features">features</a>.</p><p>The·syntax·is·similar·to·that·of·an·attribute,·but·has·two·arguments:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">feature</span><span·class="p"·data-group-id="4008706226-1">(</span><span·class="n">FeatureName</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">enable</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">disable</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·22,·SHA:·2770be7734d676aa0c1bc999b30ba54ed5488ec903eb2e63790ea023fa16cc91·...·]-1">)</span><span·class="p">.</span></code></pre><p>Note·that·the·<a·href="macros.html#feature-directive">feature·directive</a>·can·only·appear |
| 261 | in·a·prefix·of·the·module.</p><h2·id="comments"·class="section-heading"> | 261 | in·a·prefix·of·the·module.</p><h2·id="comments"·class="section-heading"> |
| 262 | ··<a·href="#comments"·class="hover-link"> | 262 | ··<a·href="#comments"·class="hover-link"> |
| 263 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 263 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 264 | ··</a> | 264 | ··</a> |
| 265 | ··<span·class="text">Comments</span> | 265 | ··<span·class="text">Comments</span> |
| 266 | </h2> | 266 | </h2> |
| 267 | <p>Comments·can·be·placed·anywhere·in·a·module·except·within·strings·and | 267 | <p>Comments·can·be·placed·anywhere·in·a·module·except·within·strings·and |
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| 133 | ··<span·class="text">Erlang·Program</span> | 133 | ··<span·class="text">Erlang·Program</span> |
| 134 | </h2> | 134 | </h2> |
| 135 | <p>Even·if·all·functions·of·a·module·are·NIFs,·an·Erlang·module·is·still·needed·for | 135 | <p>Even·if·all·functions·of·a·module·are·NIFs,·an·Erlang·module·is·still·needed·for |
| 136 | two·reasons:</p><ul><li>The·NIF·library·must·be·explicitly·loaded·by·Erlang·code·in·the·same·module.</li><li>All·NIFs·of·a·module·must·have·an·Erlang·implementation·as·well.</li></ul><p>Normally·these·are·minimal·stub·implementations·that·throw·an·exception.·But | 136 | two·reasons:</p><ul><li>The·NIF·library·must·be·explicitly·loaded·by·Erlang·code·in·the·same·module.</li><li>All·NIFs·of·a·module·must·have·an·Erlang·implementation·as·well.</li></ul><p>Normally·these·are·minimal·stub·implementations·that·throw·an·exception.·But |
| 137 | they·can·also·be·used·as·fallback·implementations·for·functions·that·do·not·have | 137 | they·can·also·be·used·as·fallback·implementations·for·functions·that·do·not·have |
| 138 | native·implementations·on·some·architectures.</p><p>NIF·libraries·are·loaded·by·calling·<a·href="../../erts-15.2.3/doc/html/erlang.html#load_nif/2"><code·class="inline">erlang:load_nif/2</code></a>,·with·the·name·of·the | 138 | native·implementations·on·some·architectures.</p><p>NIF·libraries·are·loaded·by·calling·<a·href="../../erts-15.2.3/doc/html/erlang.html#load_nif/2"><code·class="inline">erlang:load_nif/2</code></a>,·with·the·name·of·the |
| 139 | shared·library·as·argument.·The·second·argument·can·be·any·term·that·will·be | 139 | shared·library·as·argument.·The·second·argument·can·be·any·term·that·will·be |
| 140 | passed·on·to·the·library·and·used·for·initialization:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 140 | passed·on·to·the·library·and·used·for·initialization:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="6631271958-1">(</span><span·class="ss">complex6</span><span·class="p"·data-group-id="6631271958-1">)</span><span·class="p">.</span><span·class="w"> |
| 141 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 141 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="6631271958-2">(</span><span·class="p"·data-group-id="6631271958-3">[</span><span·class="ss">foo</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">bar</span><span·class="p">/</span><span·[·...·truncated·by·diffoscope;·len:·113,·SHA:·b8e91c9c404531e7393ccc9d2ee18badfb444f2aaee00edb18cce671b84eaf56·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 142 | </span><span·class="p">-</span><span·class="na">nifs</span><span·class="p"·data-group-id=" | 142 | </span><span·class="p">-</span><span·class="na">nifs</span><span·class="p"·data-group-id="6631271958-4">(</span><span·class="p"·data-group-id="6631271958-5">[</span><span·class="ss">foo</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">bar</span><span·class="p">/</span><span·[·...·truncated·by·diffoscope;·len:·113,·SHA:·9a5736d7f109c5988961c47062e2e4fbe3aa74aad2323302779e3a138bb96587·...·]-4">)</span><span·class="p">.</span><span·class="w"> |
| 143 | </span><span·class="p">-</span><span·class="na">on_load</span><span·class="p"·data-group-id=" | 143 | </span><span·class="p">-</span><span·class="na">on_load</span><span·class="p"·data-group-id="6631271958-6">(</span><span·class="ss">init</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data-group-id="6631271958-6">)</span><span·class="p">.</span><span·class="w"> |
| 144 | </span><span·class="nf">init</span><span·class="p"·data-group-id=" | 144 | </span><span·class="nf">init</span><span·class="p"·data-group-id="6631271958-7">(</span><span·class="p"·data-group-id="6631271958-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 145 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">load_nif</span><span·class="p"·data-group-id=" | 145 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">load_nif</span><span·class="p"·data-group-id="6631271958-8">(</span><span·class="s">"./complex6_nif"</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">0</span><span·class="p"·data-group-id="6631271958-8">)</span><span·class="p">.</span><span·class="w"> |
| 146 | </span><span·class="nf">foo</span><span·class="p"·data-group-id=" | 146 | </span><span·class="nf">foo</span><span·class="p"·data-group-id="6631271958-9">(</span><span·class="p">_</span><span·class="n">X</span><span·class="p"·data-group-id="6631271958-9">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 147 | ····</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">nif_error</span><span·class="p"·data-group-id=" | 147 | ····</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">nif_error</span><span·class="p"·data-group-id="6631271958-10">(</span><span·class="ss">nif_library_not_loaded</span><span·class="p"·data-group-id="6631271958-10">)</span><span·class="p">.</span><span·class="w"> |
| 148 | </span><span·class="nf">bar</span><span·class="p"·data-group-id=" | 148 | </span><span·class="nf">bar</span><span·class="p"·data-group-id="6631271958-11">(</span><span·class="p">_</span><span·class="n">Y</span><span·class="p"·data-group-id="6631271958-11">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 149 | ····</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">nif_error</span><span·class="p"·data-group-id=" | 149 | ····</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">nif_error</span><span·class="p"·data-group-id="6631271958-12">(</span><span·class="ss">nif_library_not_loaded</span><span·class="p"·data-group-id="6631271958-12">)</span><span·class="p">.</span></code></pre><p>Here,·the·directive·<code·class="inline">on_load</code>·is·used·to·get·function·<code·class="inline">init</code>·to·be·automatically |
| 150 | called·when·the·module·is·loaded.·If·<code·class="inline">init</code>·returns·anything·other·than·<code·class="inline">ok</code>, | 150 | called·when·the·module·is·loaded.·If·<code·class="inline">init</code>·returns·anything·other·than·<code·class="inline">ok</code>, |
| 151 | such·when·the·loading·of·the·NIF·library·fails·in·this·example,·the·module·is | 151 | such·when·the·loading·of·the·NIF·library·fails·in·this·example,·the·module·is |
| 152 | unloaded·and·calls·to·functions·within·it,·fail.</p><p>Loading·the·NIF·library·overrides·the·stub·implementations·and·cause·calls·to | 152 | unloaded·and·calls·to·functions·within·it,·fail.</p><p>Loading·the·NIF·library·overrides·the·stub·implementations·and·cause·calls·to |
| 153 | <code·class="inline">foo</code>·and·<code·class="inline">bar</code>·to·be·dispatched·to·the·NIF·implementations·instead.</p><h2·id="nif-library-code"·class="section-heading"> | 153 | <code·class="inline">foo</code>·and·<code·class="inline">bar</code>·to·be·dispatched·to·the·NIF·implementations·instead.</p><h2·id="nif-library-code"·class="section-heading"> |
| 154 | ··<a·href="#nif-library-code"·class="hover-link"> | 154 | ··<a·href="#nif-library-code"·class="hover-link"> |
| 155 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 155 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 156 | ··</a> | 156 | ··</a> |
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| 209 | ··<a·href="#running-the-example"·class="hover-link"> | 209 | ··<a·href="#running-the-example"·class="hover-link"> |
| 210 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 210 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 211 | ··</a> | 211 | ··</a> |
| 212 | ··<span·class="text">Running·the·Example</span> | 212 | ··<span·class="text">Running·the·Example</span> |
| 213 | </h2> | 213 | </h2> |
| 214 | <p><em>Step·1.</em>·Compile·the·C·code:</p><pre><code·class="text">unix>·gcc·-o·complex6_nif.so·-fpic·-shared·complex.c·complex6_nif.c | 214 | <p><em>Step·1.</em>·Compile·the·C·code:</p><pre><code·class="text">unix>·gcc·-o·complex6_nif.so·-fpic·-shared·complex.c·complex6_nif.c |
| 215 | windows>·cl·-LD·-MD·-Fe·complex6_nif.dll·complex.c·complex6_nif.c</code></pre><p><em>Step·2:</em>·Start·Erlang·and·compile·the·Erlang·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="ss">erl</span><span·class="w"> | 215 | windows>·cl·-LD·-MD·-Fe·complex6_nif.dll·complex.c·complex6_nif.c</code></pre><p><em>Step·2:</em>·Start·Erlang·and·compile·the·Erlang·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="ss">erl</span><span·class="w"> |
| 216 | </span><span·class="n">Erlang</span><span·class="w">·</span><span·class="n">R13B04</span><span·class="w">·</span><span·class="p"·data-group-id=" | 216 | </span><span·class="n">Erlang</span><span·class="w">·</span><span·class="n">R13B04</span><span·class="w">·</span><span·class="p"·data-group-id="1595870232-1">(</span><span·class="ss">erts</span><span·class="o">-</span><span·class="mf">5.7</span><span·class="p">.</span><span·class="mi">5</span><span·class="p"·data-group-id="1595870232-1">)</span><span·class="w">·</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·1130,·SHA:·b759fd8890f9d7389eafba39914638a15b62a3fc5f985e25df682e9360cd676c·...·]-6">]</span><span·class="w"> |
| 217 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V5</span><span·class="p">.</span><span·class="mf">7.5</span><span·class="w">··</span><span·class="p"·data-group-id=" | 217 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V5</span><span·class="p">.</span><span·class="mf">7.5</span><span·class="w">··</span><span·class="p"·data-group-id="1595870232-7">(</span><span·class="ss">abort</span><span·class="w">·</span><span·class="ss">with</span><span·class="w">·</span><span·class="err">^</span><span·class="n">G</span><span·class="p"·data-group-id="1595870232-7">)</span><span·class="gp·unselectable"> |
| 218 | 1>·</span><span·class="nf">c</span><span·class="p"·data-group-id=" | 218 | 1>·</span><span·class="nf">c</span><span·class="p"·data-group-id="1595870232-8">(</span><span·class="ss">complex6</span><span·class="p"·data-group-id="1595870232-8">)</span><span·class="p">.</span><span·class="w"> |
| 219 | </span><span·class="p"·data-group-id=" | 219 | </span><span·class="p"·data-group-id="1595870232-9">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="ss">complex6</span><span·class="p"·data-group-id="1595870232-9">}</span></code></pre><p><em>Step·3:</em>·Run·the·example:</p><pre><code·class="makeup·erlang"·translate="no[·...·truncated·by·diffoscope;·len:·247,·SHA:·0f137c920fe74757c0122cc529593609d2be41138d666412c669ac7afe453ddf·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 220 | </span><span·class="mi">4</span><span·class="gp·unselectable"> | 220 | </span><span·class="mi">4</span><span·class="gp·unselectable"> |
| 221 | 4>·</span><span·class="nc">complex6</span><span·class="p">:</span><span·class="nf">bar</span><span·class="p"·data-group-id=" | 221 | 4>·</span><span·class="nc">complex6</span><span·class="p">:</span><span·class="nf">bar</span><span·class="p"·data-group-id="7032724983-2">(</span><span·class="mi">5</span><span·class="p"·data-group-id="7032724983-2">)</span><span·class="p">.</span><span·class="w"> |
| 222 | </span><span·class="mi">10</span><span·class="gp·unselectable"> | 222 | </span><span·class="mi">10</span><span·class="gp·unselectable"> |
| 223 | 5>·</span><span·class="nc">complex6</span><span·class="p">:</span><span·class="nf">foo</span><span·class="p"·data-group-id=" | 223 | 5>·</span><span·class="nc">complex6</span><span·class="p">:</span><span·class="nf">foo</span><span·class="p"·data-group-id="7032724983-3">(</span><span·class="s">"not·an·integer"</span><span·class="p"·data-group-id="7032724983-3">)</span><span·class="p">.</span><span·class="w"> |
| 224 | </span><span·class="gt">**·exception·error:·bad·argument | 224 | </span><span·class="gt">**·exception·error:·bad·argument |
| 225 | ·····in·function··complex6:foo/1 | 225 | ·····in·function··complex6:foo/1 |
| 226 | ········called·as·comlpex6:foo("not·an·integer")</span></code></pre> | 226 | ········called·as·comlpex6:foo("not·an·integer")</span></code></pre> |
| 227 | </div> | 227 | </div> |
| 228 | <div·class="bottom-actions"·id="bottom-actions"> | 228 | <div·class="bottom-actions"·id="bottom-actions"> |
| 229 | ··<div·class="bottom-actions-item"> | 229 | ··<div·class="bottom-actions-item"> |
| Offset 122, 24 lines modified | Offset 122, 24 lines modified | ||
| 122 | ··<span·class="text">Opaque·Type·Aliases</span> | 122 | ··<span·class="text">Opaque·Type·Aliases</span> |
| 123 | </h2> | 123 | </h2> |
| 124 | <p>The·main·use·case·for·opacity·in·Erlang·is·to·hide·the·implementation·of·a·data | 124 | <p>The·main·use·case·for·opacity·in·Erlang·is·to·hide·the·implementation·of·a·data |
| 125 | type,·enabling·evolving·the·API·while·minimizing·the·risk·of·breaking·consumers. | 125 | type,·enabling·evolving·the·API·while·minimizing·the·risk·of·breaking·consumers. |
| 126 | The·runtime·does·not·check·opacity.·Dialyzer·provides·some·opacity-checking,·but | 126 | The·runtime·does·not·check·opacity.·Dialyzer·provides·some·opacity-checking,·but |
| 127 | the·rest·is·up·to·convention.</p><p>This·document·explains·what·Erlang·opacity·is·(and·the·trade-offs·involved)·via | 127 | the·rest·is·up·to·convention.</p><p>This·document·explains·what·Erlang·opacity·is·(and·the·trade-offs·involved)·via |
| 128 | the·example·of·the·<a·href="../../lib/stdlib-6.2.1/doc/html/sets.html#t:set/0"><code·class="inline">sets:set()</code></a>·data·type.·This·type·<em>was</em> | 128 | the·example·of·the·<a·href="../../lib/stdlib-6.2.1/doc/html/sets.html#t:set/0"><code·class="inline">sets:set()</code></a>·data·type.·This·type·<em>was</em> |
| 129 | defined·in·the·<code·class="inline">sets</code>·module·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">opaque</span><span·class="w">·</span><span·class="nf">set</span><span·class="p"·data-group-id="9 | 129 | defined·in·the·<code·class="inline">sets</code>·module·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">opaque</span><span·class="w">·</span><span·class="nf">set</span><span·class="p"·data-group-id="9214692579-1">(</span><span·class="n">Element</span><span·class="p"·data-group-id="9214692579-1">)</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">set</span><span[·...·truncated·by·diffoscope;·len:·377,·SHA:·310e0f4c75b170ad732ecae99d6bdafeed4e4932514e842a1e65d8cb1ed60c01·...·]-2">}</span><span·class="p">.</span></code></pre><p>OTP·24·changed·the·definition·to·the·following·in |
| 130 | <a·href="https://github.com/erlang/otp/commit/e66941e8d7c47b973dff94c0308ea85a6be1958e">this·commit</a>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">opaque</span><span·class="w">·</span><span·class="nf">set</span><span·class="p"·data-group-id=" | 130 | <a·href="https://github.com/erlang/otp/commit/e66941e8d7c47b973dff94c0308ea85a6be1958e">this·commit</a>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">opaque</span><span·class="w">·</span><span·class="nf">set</span><span·class="p"·data-group-id="1188917355-1">(</span><span·class="n">Element</span><span·class="p"·data-group-id="1188917355-1">)</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">set</span><spa[·...·truncated·by·diffoscope;·len:·715,·SHA:·57c3d068ec597c7c78fce9a268b336c684ab72ec22581fb25e7f4d63108db9f5·...·]-4">}</span><span·class="p">.</span></code></pre><p>And·this·change·was·safer·and·more·backwards-compatible·than·if·the·type·had |
| 131 | been·defined·with·<code·class="inline">-type</code>·instead·of·<code·class="inline">-opaque</code>.·Here·is·why:·when·a·module | 131 | been·defined·with·<code·class="inline">-type</code>·instead·of·<code·class="inline">-opaque</code>.·Here·is·why:·when·a·module |
| 132 | defines·an·<code·class="inline">-opaque</code>,·the·contract·is·that·only·the·defining·module·should·rely | 132 | defines·an·<code·class="inline">-opaque</code>,·the·contract·is·that·only·the·defining·module·should·rely |
| 133 | on·the·definition·of·the·type:·no·other·modules·should·rely·on·the·definition.</p><p>This·means·that·code·that·pattern-matched·on·<code·class="inline">set</code>·as·a·record/tuple·technically | 133 | on·the·definition·of·the·type:·no·other·modules·should·rely·on·the·definition.</p><p>This·means·that·code·that·pattern-matched·on·<code·class="inline">set</code>·as·a·record/tuple·technically |
| 134 | broke·the·contract,·and·opted·in·to·being·potentially·broken·when·the·definition | 134 | broke·the·contract,·and·opted·in·to·being·potentially·broken·when·the·definition |
| 135 | of·<code·class="inline">set()</code>·changed.·Before·OTP·24,·this·code·printed·<code·class="inline">ok</code>.·In·OTP·24·it·may | 135 | of·<code·class="inline">set()</code>·changed.·Before·OTP·24,·this·code·printed·<code·class="inline">ok</code>.·In·OTP·24·it·may |
| 136 | error:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">case</span><span·class="w">·</span><span·class="nc">sets</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id=" | 136 | error:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">case</span><span·class="w">·</span><span·class="nc">sets</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id="8234039129-1">(</span><span·class="p"·data-group-id="8234039129-1">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 137 | ····</span><span·class="n">Set</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_tuple</span><span·class="p"·data-group-id=" | 137 | ····</span><span·class="n">Set</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_tuple</span><span·class="p"·data-group-id="8234039129-2">(</span><span·class="n">Set</span><span·class="p"·data-group-id="8234039129-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 138 | ········</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 138 | ········</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="8234039129-3">(</span><span·class="s">"ok"</span><span·class="p"·data-group-id="8234039129-3">)</span><span·class="w"> |
| 139 | </span><span·class="k">end</span><span·class="p">.</span></code></pre><p><strong>When·working·with·an·opaque·defined·in·another·module,·here·are·some | 139 | </span><span·class="k">end</span><span·class="p">.</span></code></pre><p><strong>When·working·with·an·opaque·defined·in·another·module,·here·are·some |
| 140 | recommendations:</strong></p><ul><li>Don't·examine·the·underlying·type·using·pattern-matching,·guards,·or·functions | 140 | recommendations:</strong></p><ul><li>Don't·examine·the·underlying·type·using·pattern-matching,·guards,·or·functions |
| 141 | that·reveal·the·type,·such·as·<a·href="../../erts-15.2.3/doc/html/erlang.html#tuple_size/1"><code·class="inline">tuple_size/1</code></a>·.</li><li>Instead,·use·functions·provided·by·the·module·for·working·with·the·type.·For | 141 | that·reveal·the·type,·such·as·<a·href="../../erts-15.2.3/doc/html/erlang.html#tuple_size/1"><code·class="inline">tuple_size/1</code></a>·.</li><li>Instead,·use·functions·provided·by·the·module·for·working·with·the·type.·For |
| 142 | example,·<code·class="inline">sets</code>·module·provides·<a·href="../../lib/stdlib-6.2.1/doc/html/sets.html#new/0"><code·class="inline">sets:new/0</code></a>,·<a·href="../../lib/stdlib-6.2.1/doc/html/sets.html#add_element/2"><code·class="inline">sets:add_element/2</code></a>, | 142 | example,·<code·class="inline">sets</code>·module·provides·<a·href="../../lib/stdlib-6.2.1/doc/html/sets.html#new/0"><code·class="inline">sets:new/0</code></a>,·<a·href="../../lib/stdlib-6.2.1/doc/html/sets.html#add_element/2"><code·class="inline">sets:add_element/2</code></a>, |
| 143 | <a·href="../../lib/stdlib-6.2.1/doc/html/sets.html#is_element/2"><code·class="inline">sets:is_element/2</code></a>,·and·so·on.</li><li><p><a·href="../../lib/stdlib-6.2.1/doc/html/sets.html#t:set/1"><code·class="inline">sets:set(a)</code></a>·is·a·subtype·of·<code·class="inline">sets:set(a·|·b)</code>·and·not·the | 143 | <a·href="../../lib/stdlib-6.2.1/doc/html/sets.html#is_element/2"><code·class="inline">sets:is_element/2</code></a>,·and·so·on.</li><li><p><a·href="../../lib/stdlib-6.2.1/doc/html/sets.html#t:set/1"><code·class="inline">sets:set(a)</code></a>·is·a·subtype·of·<code·class="inline">sets:set(a·|·b)</code>·and·not·the |
| 144 | other·way·around.·Generally,·you·can·rely·on·the·property·that·<code·class="inline">the_opaque(T)</code> | 144 | other·way·around.·Generally,·you·can·rely·on·the·property·that·<code·class="inline">the_opaque(T)</code> |
| 145 | is·a·subtype·of·<code·class="inline">the_opaque(U)</code>·when·T·is·a·subtype·of·U.</p></li></ul><p><strong>When·defining·your·own·opaques,·here·are·some·recommendations:</strong></p><ul><li>Since·consumers·are·expected·to·not·rely·on·the·definition·of·the·opaque·type, | 145 | is·a·subtype·of·<code·class="inline">the_opaque(U)</code>·when·T·is·a·subtype·of·U.</p></li></ul><p><strong>When·defining·your·own·opaques,·here·are·some·recommendations:</strong></p><ul><li>Since·consumers·are·expected·to·not·rely·on·the·definition·of·the·opaque·type, |
| Offset 201, 15 lines modified | Offset 201, 15 lines modified | ||
| 201 | ··</a> | 201 | ··</a> |
| 202 | ··<span·class="text">Sanity·check</span> | 202 | ··<span·class="text">Sanity·check</span> |
| 203 | </h2> | 203 | </h2> |
| 204 | <p>The·application·dependencies·can·be·checked·using·the·Erlang·shell. | 204 | <p>The·application·dependencies·can·be·checked·using·the·Erlang·shell. |
| 205 | Application·dependencies·are·verified·among·installed·applications·by | 205 | Application·dependencies·are·verified·among·installed·applications·by |
| 206 | <code·class="inline">otp_patch_apply</code>,·but·these·are·not·necessarily·those·actually·loaded. | 206 | <code·class="inline">otp_patch_apply</code>,·but·these·are·not·necessarily·those·actually·loaded. |
| 207 | By·calling·<code·class="inline">system_information:sanity_check()</code>·one·can·validate | 207 | By·calling·<code·class="inline">system_information:sanity_check()</code>·one·can·validate |
| 208 | dependencies·among·applications·actually·loaded.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">system_information</span><span·class="p">:</span><span·class="nf">sanity_check</span><span·class="p"·data-group-id="3 | 208 | dependencies·among·applications·actually·loaded.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">system_information</span><span·class="p">:</span><span·class="nf">sanity_check</span><span·class="p"·data-group-id="7385840372-1">(</span><span·class="p"·data-group-id="7385840372-1">)</span><span·class="p">.</span><span·class="w"> |
| 209 | </span><span·class="ss">ok</span></code></pre><p>Please·take·a·look·at·the·reference·of·<a·href="../../lib/runtime_tools-2.1.1/doc/html/system_information.html#sanity_check/0"·title="">sanity_check()</a>·for·more | 209 | </span><span·class="ss">ok</span></code></pre><p>Please·take·a·look·at·the·reference·of·<a·href="../../lib/runtime_tools-2.1.1/doc/html/system_information.html#sanity_check/0"·title="">sanity_check()</a>·for·more |
| 210 | information.</p> | 210 | information.</p> |
| 211 | </div> | 211 | </div> |
| 212 | <div·class="bottom-actions"·id="bottom-actions"> | 212 | <div·class="bottom-actions"·id="bottom-actions"> |
| 213 | ··<div·class="bottom-actions-item"> | 213 | ··<div·class="bottom-actions-item"> |
| Offset 128, 18 lines modified | Offset 128, 18 lines modified | ||
| 128 | succeeds,·any·unbound·variables·in·the·pattern·become·bound.·If·the·matching | 128 | succeeds,·any·unbound·variables·in·the·pattern·become·bound.·If·the·matching |
| 129 | fails,·an·exception·is·raised.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">X</span><span·class="p">.</span><span·class="w"> | 129 | fails,·an·exception·is·raised.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">X</span><span·class="p">.</span><span·class="w"> |
| 130 | </span><span·class="gt">**·1:1:·variable·'X'·is·unbound·**</span><span·class="gp·unselectable"> | 130 | </span><span·class="gt">**·1:1:·variable·'X'·is·unbound·**</span><span·class="gp·unselectable"> |
| 131 | 2>·</span><span·class="n">X</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">2</span><span·class="p">.</span><span·class="w"> | 131 | 2>·</span><span·class="n">X</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">2</span><span·class="p">.</span><span·class="w"> |
| 132 | </span><span·class="mi">2</span><span·class="gp·unselectable"> | 132 | </span><span·class="mi">2</span><span·class="gp·unselectable"> |
| 133 | 3>·</span><span·class="n">X</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">.</span><span·class="w"> | 133 | 3>·</span><span·class="n">X</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">.</span><span·class="w"> |
| 134 | </span><span·class="mi">3</span><span·class="gp·unselectable"> | 134 | </span><span·class="mi">3</span><span·class="gp·unselectable"> |
| 135 | 4>·</span><span·class="p"·data-group-id=" | 135 | 4>·</span><span·class="p"·data-group-id="8058975481-1">{</span><span·class="n">X</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Y</span><span·class="p"·data-group-id="8058975481-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="[·...·truncated·by·diffoscope;·len:·178,·SHA:·c81db81098f7ee3bccecb01e8f05105d6c67f34a4426849bef829b1f8dfa3d80·...·]1-2">}</span><span·class="p">.</span><span·class="w"> |
| 136 | </span><span·class="gt">**·exception·error:·no·match·of·right·hand·side·value·{1,2}</span><span·class="gp·unselectable"> | 136 | </span><span·class="gt">**·exception·error:·no·match·of·right·hand·side·value·{1,2}</span><span·class="gp·unselectable"> |
| 137 | 5>·</span><span·class="p"·data-group-id=" | 137 | 5>·</span><span·class="p"·data-group-id="8058975481-3">{</span><span·class="n">X</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Y</span><span·class="p"·data-group-id="8058975481-3">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="[·...·truncated·by·diffoscope;·len:·178,·SHA:·a2c4eba5cbdc0fc088ad96f1aa264ab80d5d67d38f974944614c6063654b008d·...·]1-4">}</span><span·class="p">.</span><span·class="w"> |
| 138 | </span><span·class="p"·data-group-id=" | 138 | </span><span·class="p"·data-group-id="8058975481-5">{</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="8058975481-5">}</span><span·class="gp·unselectable"> |
| 139 | 6>·</span><span·class="n">Y</span><span·class="p">.</span><span·class="w"> | 139 | 6>·</span><span·class="n">Y</span><span·class="p">.</span><span·class="w"> |
| 140 | </span><span·class="mi">3</span></code></pre> | 140 | </span><span·class="mi">3</span></code></pre> |
| 141 | </div> | 141 | </div> |
| 142 | <div·class="bottom-actions"·id="bottom-actions"> | 142 | <div·class="bottom-actions"·id="bottom-actions"> |
| 143 | ··<div·class="bottom-actions-item"> | 143 | ··<div·class="bottom-actions-item"> |
| Offset 122, 105 lines modified | Offset 122, 105 lines modified | ||
| 122 | ··<span·class="text">Records·and·Tuples</span> | 122 | ··<span·class="text">Records·and·Tuples</span> |
| 123 | </h2> | 123 | </h2> |
| 124 | <p>The·main·advantage·of·using·records·rather·than·tuples·is·that·fields·in·a | 124 | <p>The·main·advantage·of·using·records·rather·than·tuples·is·that·fields·in·a |
| 125 | record·are·accessed·by·name,·whereas·fields·in·a·tuple·are·accessed·by·position. | 125 | record·are·accessed·by·name,·whereas·fields·in·a·tuple·are·accessed·by·position. |
| 126 | To·illustrate·these·differences,·suppose·that·you·want·to·represent·a·person | 126 | To·illustrate·these·differences,·suppose·that·you·want·to·represent·a·person |
| 127 | with·the·tuple·<code·class="inline">{Name,·Address,·Phone}</code>.</p><p>To·write·functions·that·manipulate·this·data,·remember·the·following:</p><ul><li>The·<code·class="inline">Name</code>·field·is·the·first·element·of·the·tuple.</li><li>The·<code·class="inline">Address</code>·field·is·the·second·element.</li><li>The·<code·class="inline">Phone</code>·field·is·the·third·element.</li></ul><p>For·example,·to·extract·data·from·a·variable·<code·class="inline">P</code>·that·contains·such·a·tuple,·you | 127 | with·the·tuple·<code·class="inline">{Name,·Address,·Phone}</code>.</p><p>To·write·functions·that·manipulate·this·data,·remember·the·following:</p><ul><li>The·<code·class="inline">Name</code>·field·is·the·first·element·of·the·tuple.</li><li>The·<code·class="inline">Address</code>·field·is·the·second·element.</li><li>The·<code·class="inline">Phone</code>·field·is·the·third·element.</li></ul><p>For·example,·to·extract·data·from·a·variable·<code·class="inline">P</code>·that·contains·such·a·tuple,·you |
| 128 | can·write·the·following·code·and·then·use·pattern·matching·to·extract·the | 128 | can·write·the·following·code·and·then·use·pattern·matching·to·extract·the |
| 129 | relevant·fields:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">element</span><span·class="p"·data-group-id="8 | 129 | relevant·fields:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">element</span><span·class="p"·data-group-id="8417905996-1">(</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">P</span><span·class="p"·data-group-id="8417905996-1">)</span><span·class="p">,</span><span·class="w"> |
| 130 | </span><span·class="n">Address</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">element</span><span·class="p"·data-group-id="8 | 130 | </span><span·class="n">Address</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">element</span><span·class="p"·data-group-id="8417905996-2">(</span><span·class="mi">2</span><span·class="p">,</span><span·class="w">·</span><span·class="n">P</span><span·class="p"·data-group-id="8417905996-2">)</span><span·class="p">,</span><span·class="w"> |
| 131 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>Such·code·is·difficult·to·read·and·understand,·and·errors·occur·if·the·numbering | 131 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>Such·code·is·difficult·to·read·and·understand,·and·errors·occur·if·the·numbering |
| 132 | of·the·elements·in·the·tuple·is·wrong.·If·the·data·representation·of·the·fields | 132 | of·the·elements·in·the·tuple·is·wrong.·If·the·data·representation·of·the·fields |
| 133 | is·changed,·by·re-ordering,·adding,·or·removing·fields,·all·references·to·the | 133 | is·changed,·by·re-ordering,·adding,·or·removing·fields,·all·references·to·the |
| 134 | person·tuple·must·be·checked·and·possibly·modified.</p><p>Records·allow·references·to·the·fields·by·name,·instead·of·by·position.·In·the | 134 | person·tuple·must·be·checked·and·possibly·modified.</p><p>Records·allow·references·to·the·fields·by·name,·instead·of·by·position.·In·the |
| 135 | following·example,·a·record·instead·of·a·tuple·is·used·to·store·the·data:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 135 | following·example,·a·record·instead·of·a·tuple·is·used·to·store·the·data:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="1529725257-1">(</span><span·class="ss">person</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1529725257-2">{</span><span·class="ss">name</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">phone</spa[·...·truncated·by·diffoscope;·len:·175,·SHA:·a380361f899ecf55eeba7218cb0a234cb22709e982a433c699026c7ec1d759c4·...·]-1">)</span><span·class="p">.</span></code></pre><p>This·enables·references·to·the·fields·of·the·record·by·name.·For·example,·if·<code·class="inline">P</code> |
| 136 | is·a·variable·whose·value·is·a·<code·class="inline">person</code>·record,·the·following·code·access·the | 136 | is·a·variable·whose·value·is·a·<code·class="inline">person</code>·record,·the·following·code·access·the |
| 137 | name·and·address·fields·of·the·records:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">P</span><span·class="o">#</span><span·class="ss">person</span><span·class="p">.</span><span·class="ss">name</span><span·class="p">,</span><span·class="w"> | 137 | name·and·address·fields·of·the·records:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">P</span><span·class="o">#</span><span·class="ss">person</span><span·class="p">.</span><span·class="ss">name</span><span·class="p">,</span><span·class="w"> |
| 138 | </span><span·class="n">Address</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">P</span><span·class="o">#</span><span·class="ss">person</span><span·class="p">.</span><span·class="ss">address</span><span·class="p">,</span><span·class="w"> | 138 | </span><span·class="n">Address</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">P</span><span·class="o">#</span><span·class="ss">person</span><span·class="p">.</span><span·class="ss">address</span><span·class="p">,</span><span·class="w"> |
| 139 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>Internally,·records·are·represented·using·tagged·tuples:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 139 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>Internally,·records·are·represented·using·tagged·tuples:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="2510002353-1">{</span><span·class="ss">person</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Phone</span><span·class="p">,</span><span·class="w">·</span><span[·...·truncated·by·diffoscope;·len:·66,·SHA:·37f99e2f7709c09d006cb56bb09ceb87402b6664e742a25cfcae6a435c1313d4·...·]-1">}</span></code></pre><h2·id="defining-a-record"·class="section-heading"> |
| 140 | ··<a·href="#defining-a-record"·class="hover-link"> | 140 | ··<a·href="#defining-a-record"·class="hover-link"> |
| 141 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 141 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 142 | ··</a> | 142 | ··</a> |
| 143 | ··<span·class="text">Defining·a·Record</span> | 143 | ··<span·class="text">Defining·a·Record</span> |
| 144 | </h2> | 144 | </h2> |
| 145 | <p>This·following·definition·of·a·<code·class="inline">person</code>·is·used·in·several·examples·in·this | 145 | <p>This·following·definition·of·a·<code·class="inline">person</code>·is·used·in·several·examples·in·this |
| 146 | section.·Three·fields·are·included,·<code·class="inline">name</code>,·<code·class="inline">phone</code>,·and·<code·class="inline">address</code>.·The·default | 146 | section.·Three·fields·are·included,·<code·class="inline">name</code>,·<code·class="inline">phone</code>,·and·<code·class="inline">address</code>.·The·default |
| 147 | values·for·<code·class="inline">name</code>·and·<code·class="inline">phone</code>·is·""·and·[],·respectively.·The·default·value·for | 147 | values·for·<code·class="inline">name</code>·and·<code·class="inline">phone</code>·is·""·and·[],·respectively.·The·default·value·for |
| 148 | <code·class="inline">address</code>·is·the·atom·<code·class="inline">undefined</code>,·since·no·default·value·is·supplied·for·this | 148 | <code·class="inline">address</code>·is·the·atom·<code·class="inline">undefined</code>,·since·no·default·value·is·supplied·for·this |
| 149 | field:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="6134951943-1">(</span><span·class="ss">person</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6134951943-2">{</span><span·class="ss">name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">""</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">phone</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6134951943-3">[</span><span·class="p"·data-group-id="6134951943-3">]</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">address</span><span·class="p"·data-group-id="6134951943-2">}</span><span·class="p"·data-group-id="6134951943-1">)</span><span·class="p">.</span></code></pre><p>The·record·must·be·defined·in·the·shell·to·enable·use·of·the·record·syntax·in | ||
| 150 | 149 | field:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="6976961467-1">(</span><span·class="ss">person</span><span·class="p">,</span><span·class="w">·</span><span·class="[·...·truncated·by·diffoscope;·len:·732,·SHA:·d521b8356d3dd107eab261e533a64951dcf6012cc074fd65e7ad6e2ecff1d411·...·] | |
| 150 | the·examples:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nf">rd</span><span·class="p"·data-group-id="8634798813-1">(</span><span·class="ss">person</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8634798813-2">{</span><span·class="ss">name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">""</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">phone</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="8634798813-3">[</span><span·class="p"·data-group-id="8634798813-3">]</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">address</span><span·class="p"·data-group-id="8634798813-2">}</span><span·class="p"·data-group-id="8634798813-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 151 | </span><span·class="ss">person</span></code></pre><p>This·is·because·record·definitions·are·only·available·at·compile·time,·not·at | 151 | </span><span·class="ss">person</span></code></pre><p>This·is·because·record·definitions·are·only·available·at·compile·time,·not·at |
| 152 | runtime.·For·details·on·records·in·the·shell,·see·the·<a·href="../../lib/stdlib-6.2.1/doc/html/shell.html"><code·class="inline">shell</code></a>·manual·page·in | 152 | runtime.·For·details·on·records·in·the·shell,·see·the·<a·href="../../lib/stdlib-6.2.1/doc/html/shell.html"><code·class="inline">shell</code></a>·manual·page·in |
| 153 | STDLIB.</p><h2·id="creating-a-record"·class="section-heading"> | 153 | STDLIB.</p><h2·id="creating-a-record"·class="section-heading"> |
| 154 | ··<a·href="#creating-a-record"·class="hover-link"> | 154 | ··<a·href="#creating-a-record"·class="hover-link"> |
| 155 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 155 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 156 | ··</a> | 156 | ··</a> |
| 157 | ··<span·class="text">Creating·a·Record</span> | 157 | ··<span·class="text">Creating·a·Record</span> |
| 158 | </h2> | 158 | </h2> |
| 159 | <p>A·new·<code·class="inline">person</code>·record·is·created·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id=" | 159 | <p>A·new·<code·class="inline">person</code>·record·is·created·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id="6252482827-1">{</span><span·class="ss">phone</span><span·class="o">=</span><span·class="p"·data-group-id="6252482827-2">[</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">8</span><span·class="p">,</span><span·class="mi">2</span><span[·...·truncated·by·diffoscope;·len:·475,·SHA:·58f5708a993877fac7e97bf581025d105e871875d706b8e3ca2f07dbe3d68078·...·]-1">}</span><span·class="p">.</span><span·class="w"> |
| 160 | </span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id=" | 160 | </span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id="6252482827-3">{</span><span·class="ss">name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"Robert"</span><span·class="p">,</span><span·class="ss">phone</span><span·class="w">·</span><span·class="o">[·...·truncated·by·diffoscope;·len:·707,·SHA:·ce8143b6f7ddfaed6cc58f1c8a0f1a06faff0373751223fee01e9f3364eae96f·...·]-3">}</span></code></pre><p>As·the·<code·class="inline">address</code>·field·was·omitted,·its·default·value·is·used.</p><p>From·Erlang·5.1/OTP·R8B,·a·value·to·all·fields·in·a·record·can·be·set·with·the |
| 161 | special·field·<code·class="inline">_</code>.·<code·class="inline">_</code>·means·"all·fields·not·explicitly·specified".</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id=" | 161 | special·field·<code·class="inline">_</code>.·<code·class="inline">_</code>·means·"all·fields·not·explicitly·specified".</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id="4754341855-1">{</span><span·class="ss">name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"Jakob"</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="w">·</spa[·...·truncated·by·diffoscope;·len:·126,·SHA:·25a88c525e08813068cb5d30290feea91a9bb4ce476bddc5112c3d9a31d50577·...·]-1">}</span><span·class="p">.</span><span·class="w"> |
| 162 | </span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id=" | 162 | </span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id="4754341855-2">{</span><span·class="ss">name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"Jakob"</span><span·class="p">,</span><span·class="ss">phone</span><span·class="w">·</span><span·class="o">=[·...·truncated·by·diffoscope;·len:·269,·SHA:·5eebdfab82628b93949afeda046a4dd457f06c50c6e19c43c770f198be34cec6·...·]-2">}</span></code></pre><p>It·is·primarily·intended·to·be·used·in·<a·href="../../lib/stdlib-6.2.1/doc/html/ets.html#match/2"><code·class="inline">ets:match/2</code></a>·and |
| 163 | <a·href="../../lib/mnesia-4.23.4/doc/html/mnesia.html#match_object/3"><code·class="inline">mnesia:match_object/3</code></a>,·to·set·record·fields·to·the·atom·<code·class="inline">'_'</code>.·(This·is·a | 163 | <a·href="../../lib/mnesia-4.23.4/doc/html/mnesia.html#match_object/3"><code·class="inline">mnesia:match_object/3</code></a>,·to·set·record·fields·to·the·atom·<code·class="inline">'_'</code>.·(This·is·a |
| 164 | wildcard·in·<a·href="../../lib/stdlib-6.2.1/doc/html/ets.html#match/2"><code·class="inline">ets:match/2</code></a>.)</p><h2·id="accessing-a-record-field"·class="section-heading"> | 164 | wildcard·in·<a·href="../../lib/stdlib-6.2.1/doc/html/ets.html#match/2"><code·class="inline">ets:match/2</code></a>.)</p><h2·id="accessing-a-record-field"·class="section-heading"> |
| 165 | ··<a·href="#accessing-a-record-field"·class="hover-link"> | 165 | ··<a·href="#accessing-a-record-field"·class="hover-link"> |
| 166 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 166 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 167 | ··</a> | 167 | ··</a> |
| 168 | ··<span·class="text">Accessing·a·Record·Field</span> | 168 | ··<span·class="text">Accessing·a·Record·Field</span> |
| 169 | </h2> | 169 | </h2> |
| 170 | <p>The·following·example·shows·how·to·access·a·record·field:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">P</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id=" | 170 | <p>The·following·example·shows·how·to·access·a·record·field:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">P</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id="8687112792-1">{</span><span·class="ss">name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"Joe"</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">phone</span><span·class="w">·</[·...·truncated·by·diffoscope;·len:·568,·SHA:·1348180d87373aa9708db5db9bb56e9e5802b9cfab6c8f0b48fabcdc72175f9e·...·]-1">}</span><span·class="p">.</span><span·class="w"> |
| 171 | </span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id=" | 171 | </span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id="8687112792-3">{</span><span·class="ss">name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"Joe"</span><span·class="p">,</span><span·class="ss">phone</span><span·class="w">·</span><span·class="o">=</[·...·truncated·by·diffoscope;·len:·704,·SHA:·e93851df8c6fdce8a10583b32605a35a4811c2d52f19f1950345b047890ed9e6·...·]-3">}</span><span·class="gp·unselectable"> |
| 172 | >·</span><span·class="n">P</span><span·class="o">#</span><span·class="ss">person</span><span·class="p">.</span><span·class="ss">name</span><span·class="p">.</span><span·class="w"> | 172 | >·</span><span·class="n">P</span><span·class="o">#</span><span·class="ss">person</span><span·class="p">.</span><span·class="ss">name</span><span·class="p">.</span><span·class="w"> |
| 173 | </span><span·class="s">"Joe"</span></code></pre><h2·id="updating-a-record"·class="section-heading"> | 173 | </span><span·class="s">"Joe"</span></code></pre><h2·id="updating-a-record"·class="section-heading"> |
| 174 | ··<a·href="#updating-a-record"·class="hover-link"> | 174 | ··<a·href="#updating-a-record"·class="hover-link"> |
| 175 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 175 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 176 | ··</a> | 176 | ··</a> |
| 177 | ··<span·class="text">Updating·a·Record</span> | 177 | ··<span·class="text">Updating·a·Record</span> |
| 178 | </h2> | 178 | </h2> |
| 179 | <p>The·following·example·shows·how·to·update·a·record:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">P1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id=" | 179 | <p>The·following·example·shows·how·to·update·a·record:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">P1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id="1219924501-1">{</span><span·class="ss">name</span><span·class="o">=</span><span·class="s">"Joe"</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">phone</span><span·class="o">=</span><span·class="p"·data-group-id="1219924501-2[·...·truncated·by·diffoscope;·len:·373,·SHA:·7bc7320d10ca181bc5288edbbf79da11a76589f59f1ba10342151f2812d5f4ce·...·]-1">}</span><span·class="p">.</span><span·class="w"> |
| 180 | </span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id=" | 180 | </span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id="1219924501-3">{</span><span·class="ss">name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"Joe"</span><span·class="p">,</span><span·class="ss">phone</span><span·class="w">·</span><span·class="o">=</[·...·truncated·by·diffoscope;·len:·469,·SHA:·3b8785b5e8d9af7921aaad312b5d777194ab1136aa1945aa87055c577c03c2c2·...·]-3">}</span><span·class="gp·unselectable"> |
| 181 | >·</span><span·class="n">P2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">P1</span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id=" | 181 | >·</span><span·class="n">P2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">P1</span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id="1219924501-5">{</span><span·class="ss">name</span><span·class="o">=</span><span·class="s">"Robert"</span><span·class="p"·data-group-id="1219924501-5">}</span><span·class="p">.</span><span·class="w"> |
| 182 | </span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id=" | 182 | </span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id="1219924501-6">{</span><span·class="ss">name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"Robert"</span><span·class="p">,</span><span·class="ss">phone</span><span·class="w">·</span><span·class="o">[·...·truncated·by·diffoscope;·len:·472,·SHA:·931db20786694a09dccf948c515ee79258490734b2a2211c1ece3967f5e8ca91·...·]-6">}</span></code></pre><h2·id="type-testing"·class="section-heading"> |
| 183 | ··<a·href="#type-testing"·class="hover-link"> | 183 | ··<a·href="#type-testing"·class="hover-link"> |
| 184 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 184 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 185 | ··</a> | 185 | ··</a> |
| 186 | ··<span·class="text">Type·Testing</span> | 186 | ··<span·class="text">Type·Testing</span> |
| 187 | </h2> | 187 | </h2> |
| 188 | <p>The·following·example·shows·that·the·guard·succeeds·if·<code·class="inline">P</code>·is·record·of·type | 188 | <p>The·following·example·shows·that·the·guard·succeeds·if·<code·class="inline">P</code>·is·record·of·type |
| 189 | <code·class="inline">person</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">foo</span><span·class="p"·data-group-id=" | 189 | <code·class="inline">person</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">foo</span><span·class="p"·data-group-id="1549961019-1">(</span><span·class="n">P</span><span·class="p"·data-group-id="1549961019-1">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_record</span><span·class="p"·data-group-id="1549961019-2">(</s[·...·truncated·by·diffoscope;·len:·147,·SHA:·f98fb195675ca4143daa6304b8d603c064546a1c7c529a90e06eec12e6811432·...·]-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">a_person</span><span·class="p">;</span><span·class="w"> |
| 190 | </span><span·class="nf">foo</span><span·class="p"·data-group-id=" | 190 | </span><span·class="nf">foo</span><span·class="p"·data-group-id="1549961019-3">(</span><span·class="p">_</span><span·class="p"·data-group-id="1549961019-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">not_a_person</span><span·class="p">.</span></code></pre><h2·id="pattern-matching"·class="section-heading"> |
| 191 | ··<a·href="#pattern-matching"·class="hover-link"> | 191 | ··<a·href="#pattern-matching"·class="hover-link"> |
| 192 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 192 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 193 | ··</a> | 193 | ··</a> |
| 194 | ··<span·class="text">Pattern·Matching</span> | 194 | ··<span·class="text">Pattern·Matching</span> |
| 195 | </h2> | 195 | </h2> |
| 196 | <p>Matching·can·be·used·in·combination·with·records,·as·shown·in·the·following | 196 | <p>Matching·can·be·used·in·combination·with·records,·as·shown·in·the·following |
| 197 | example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">P3</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id=" | 197 | example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">P3</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id="1814379392-1">{</span><span·class="ss">name</span><span·class="o">=</span><span·class="s">"Joe"</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">phone</span><span·class="o">=</span><span·class="p"·data-group-id="1814379392-2[·...·truncated·by·diffoscope;·len:·372,·SHA:·ef335848a4b9df8f63d17cdf84e0e3df95a8136463f0973e1104f958dc4dbcab·...·]2-1">}</span><span·class="p">.</span><span·class="w"> |
| 198 | </span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id=" | 198 | </span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id="1814379392-3">{</span><span·class="ss">name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"Joe"</span><span·class="p">,</span><span·class="ss">phone</span><span·class="w">·</span><span·class="o">=</[·...·truncated·by·diffoscope;·len:·468,·SHA:·1b06168b97e66f4051cf2b24913aaa2db8ec90c4e8acf084e386190efb8e5892·...·]2-3">}</span><span·class="gp·unselectable"> |
| 199 | >·</span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id=" | 199 | >·</span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id="1814379392-5">{</span><span·class="ss">name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Name</span><span·class="p"·data-group-id="1814379392-5">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">P3</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Name</span><span·class="p">.</span><span·class="w"> |
| 200 | </span><span·class="s">"Joe"</span></code></pre><p>The·following·function·takes·a·list·of·<code·class="inline">person</code>·records·and·searches·for·the | 200 | </span><span·class="s">"Joe"</span></code></pre><p>The·following·function·takes·a·list·of·<code·class="inline">person</code>·records·and·searches·for·the |
| 201 | phone·number·of·a·person·with·a·particular·name:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">find_phone</span><span·class="p"·data-group-id=" | 201 | phone·number·of·a·person·with·a·particular·name:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">find_phone</span><span·class="p"·data-group-id="6648931602-1">(</span><span·class="p"·data-group-id="6648931602-2">[</span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id="6648931602-3">{</span><span·class="ss">name</span><span·class="o">=</span><span·class="n">Name</[·...·truncated·by·diffoscope;·len:·452,·SHA:·b7b0df86689921b59a223ce2ebed5c5f9aa79145eae561ff6e22e88a7d98d75f·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 202 | ····</span><span·class="p"·data-group-id=" | 202 | ····</span><span·class="p"·data-group-id="6648931602-4">{</span><span·class="ss">found</span><span·class="p">,</span><span·class="w">··</span><span·class="n">Phone</span><span·class="p"·data-group-id="6648931602-4">}</span><span·class="p">;</span><span·class="w"> |
| 203 | </span><span·class="nf">find_phone</span><span·class="p"·data-group-id=" | 203 | </span><span·class="nf">find_phone</span><span·class="p"·data-group-id="6648931602-5">(</span><span·class="p"·data-group-id="6648931602-6">[</span><span·class="p">_</span><span·class="p">|</span><span·class="w">·</span><span·class="n">T</span><span·class="p"·data-group-id="6648931602-6">]</span><span·class="p">,</span><span·cl[·...·truncated·by·diffoscope;·len:·84,·SHA:·6084c756a02bd6360b3a3dee39a384c47b205dd20deef6a9eac147017c55723c·...·]-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 204 | ····</span><span·class="nf">find_phone</span><span·class="p"·data-group-id=" | 204 | ····</span><span·class="nf">find_phone</span><span·class="p"·data-group-id="6648931602-7">(</span><span·class="n">T</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Name</span><span·class="p"·data-group-id="6648931602-7">)</span><span·class="p">;</span><span·class="w"> |
| 205 | </span><span·class="nf">find_phone</span><span·class="p"·data-group-id=" | 205 | </span><span·class="nf">find_phone</span><span·class="p"·data-group-id="6648931602-8">(</span><span·class="p"·data-group-id="6648931602-9">[</span><span·class="p"·data-group-id="6648931602-9">]</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Name</span><span·class="p"·data-group-id="6648931602-8">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 206 | ····</span><span·class="ss">not_found</span><span·class="p">.</span></code></pre><p>The·fields·referred·to·in·the·pattern·can·be·given·in·any·order.</p><h2·id="nested-records"·class="section-heading"> | 206 | ····</span><span·class="ss">not_found</span><span·class="p">.</span></code></pre><p>The·fields·referred·to·in·the·pattern·can·be·given·in·any·order.</p><h2·id="nested-records"·class="section-heading"> |
| 207 | ··<a·href="#nested-records"·class="hover-link"> | 207 | ··<a·href="#nested-records"·class="hover-link"> |
| 208 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 208 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 209 | ··</a> | 209 | ··</a> |
| 210 | ··<span·class="text">Nested·Records</span> | 210 | ··<span·class="text">Nested·Records</span> |
| 211 | </h2> | 211 | </h2> |
| 212 | <p>The·value·of·a·field·in·a·record·can·be·an·instance·of·a·record.·Retrieval·of | 212 | <p>The·value·of·a·field·in·a·record·can·be·an·instance·of·a·record.·Retrieval·of |
| 213 | nested·data·can·be·done·stepwise,·or·in·a·single·step,·as·shown·in·the·following | 213 | nested·data·can·be·done·stepwise,·or·in·a·single·step,·as·shown·in·the·following |
| 214 | example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="1729135318-1">(</span><span·class="ss">name</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1729135318-2">{</span><span·class="ss">first</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"Robert"</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">last</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"Ericsson"</span><span·class="p"·data-group-id="1729135318-2">}</span><span·class="p"·data-group-id="1729135318-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 215 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 214 | example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="8869907839-1">(</span><span·class="ss">name</span><span·class="p">,</span><span·class="w">·</span><span·class="[·...·truncated·by·diffoscope;·len:·469,·SHA:·6815af38cd33d4ccb18ea98b23146ff6094a60cc143e65f6d5dc532e03216ff7·...·]">)</span><span·class="p">.</span><span·class="w"> |
| 215 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="8869907839-3">(</span><span·class="ss">person</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8869907839-4">{</span><span·class="ss">name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">name</span><span·class="p"·data-group-id="8869907839-5">{</span><span·class="p"·data-group-id="8869907839-5">}</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">phone</span><span·class="p"·data-group-id="8869907839-4">}</span><span·class="p"·data-group-id="8869907839-3">)</span><span·class="p">.</span><span·class="w"> | ||
| 216 | </span><span·class="nf">demo</span><span·class="p"·data-group-id=" | 216 | </span><span·class="nf">demo</span><span·class="p"·data-group-id="8869907839-6">(</span><span·class="p"·data-group-id="8869907839-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 217 | ··</span><span·class="n">P</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id=" | 217 | ··</span><span·class="n">P</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id="8869907839-7">{</span><span·class="ss">name</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">name</span><span·class="p"·data-group-id="8869907839-8">{</span><span·class="ss">first</span><span·class="o">=</span>[·...·truncated·by·diffoscope;·len:·381,·SHA:·1c5c1c9d6e91dba43cc9ccc03df1d22f08d660b38236c48fea0e8cdf00bf8eb3·...·]-7">}</span><span·class="p">,</span><span·class="w"> |
| 218 | ··</span><span·class="n">First</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 218 | ··</span><span·class="n">First</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="8869907839-9">(</span><span·class="n">P</span><span·class="o">#</span><span·class="ss">person</span><span·class="p">.</span><span·class="ss">name</span><span·class="p"·data-group-id="8869907839-9">)</span><span·class="o">#</span><span·class="ss">name</span><span·class="p">.</span><span·class="ss">first</span><span·class="p">.</span></code></pre><p>Here,·<code·class="inline">demo()</code>·evaluates·to·<code·class="inline">"Robert"</code>.</p><h2·id="a-longer-example"·class="section-heading"> |
| 219 | ··<a·href="#a-longer-example"·class="hover-link"> | 219 | ··<a·href="#a-longer-example"·class="hover-link"> |
| 220 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 220 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 221 | ··</a> | 221 | ··</a> |
| 222 | ··<span·class="text">A·Longer·Example</span> | 222 | ··<span·class="text">A·Longer·Example</span> |
| 223 | </h2> | 223 | </h2> |
| 224 | <p>Comments·are·embedded·in·the·following·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·File:·person.hrl</span><span·class="w"> | 224 | <p>Comments·are·embedded·in·the·following·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·File:·person.hrl</span><span·class="w"> |
| Offset 230, 48 lines modified | Offset 230, 48 lines modified | ||
| 230 | </span><span·class="c1">%%····name:··A·string·(default·is·undefined).</span><span·class="w"> | 230 | </span><span·class="c1">%%····name:··A·string·(default·is·undefined).</span><span·class="w"> |
| 231 | </span><span·class="c1">%%····age:···An·integer·(default·is·undefined).</span><span·class="w"> | 231 | </span><span·class="c1">%%····age:···An·integer·(default·is·undefined).</span><span·class="w"> |
| 232 | </span><span·class="c1">%%····phone:·A·list·of·integers·(default·is·[]).</span><span·class="w"> | 232 | </span><span·class="c1">%%····phone:·A·list·of·integers·(default·is·[]).</span><span·class="w"> |
| 233 | </span><span·class="c1">%%····dict:··A·dictionary·containing·various·information</span><span·class="w"> | 233 | </span><span·class="c1">%%····dict:··A·dictionary·containing·various·information</span><span·class="w"> |
| 234 | </span><span·class="c1">%%···········about·the·person.</span><span·class="w"> | 234 | </span><span·class="c1">%%···········about·the·person.</span><span·class="w"> |
| 235 | </span><span·class="c1">%%···········A·{Key,·Value}·list·(default·is·the·empty·list).</span><span·class="w"> | 235 | </span><span·class="c1">%%···········A·{Key,·Value}·list·(default·is·the·empty·list).</span><span·class="w"> |
| 236 | </span><span·class="c1">%%------------------------------------------------------------</span><span·class="w"> | 236 | </span><span·class="c1">%%------------------------------------------------------------</span><span·class="w"> |
| 237 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 237 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="8615156804-1">(</span><span·class="ss">person</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8615156804-2">{</span><span·class="ss">name</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">age</span>[·...·truncated·by·diffoscope;·len:·878,·SHA:·6e304ee1bd0f25f8e82532f967b2c007b1c13cf8087e977992115dd58bf0313a·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 238 | </span><span·class="p">-</span><span·class="na">include</span><span·class="p"·data-group-id=" | 238 | </span><span·class="p">-</span><span·class="na">include</span><span·class="p"·data-group-id="2964134943-2">(</span><span·class="s">"person.hrl"</span><span·class="p"·data-group-id="2964134943-2">)</span><span·class="p">.</span><span·class="w"> |
| 239 | </span><span·class="p">-</span><span·class="na">compile</span><span·class="p"·data-group-id=" | 239 | </span><span·class="p">-</span><span·class="na">compile</span><span·class="p"·data-group-id="2964134943-3">(</span><span·class="ss">export_all</span><span·class="p"·data-group-id="2964134943-3">)</span><span·class="p">.</span><span·class="w">·</span><span·class="c1">%·For·test·purposes·only.</span><span·class="w"> |
| 240 | </span><span·class="c1">%%·This·creates·an·instance·of·a·person.</span><span·class="w"> | 240 | </span><span·class="c1">%%·This·creates·an·instance·of·a·person.</span><span·class="w"> |
| 241 | </span><span·class="c1">%%···Note:·The·phone·number·is·not·supplied·so·the</span><span·class="w"> | 241 | </span><span·class="c1">%%···Note:·The·phone·number·is·not·supplied·so·the</span><span·class="w"> |
| 242 | </span><span·class="c1">%%·········default·value·[]·will·be·used.</span><span·class="w"> | 242 | </span><span·class="c1">%%·········default·value·[]·will·be·used.</span><span·class="w"> |
| 243 | </span><span·class="nf">make_hacker_without_phone</span><span·class="p"·data-group-id=" | 243 | </span><span·class="nf">make_hacker_without_phone</span><span·class="p"·data-group-id="2964134943-4">(</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Age</span><span·class="p"·data-group-id="2964134943-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 244 | ···</span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id=" | 244 | ···</span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id="2964134943-5">{</span><span·class="ss">name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">age</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Age</span><span·class="p">,</span><span·class="w"> |
| 245 | ···········</span><span·class="ss">dict</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 245 | ···········</span><span·class="ss">dict</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2964134943-6">[</span><span·class="p"·data-group-id="2964134943-7">{</span><span·class="ss">computer_knowledge</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">excellent</span><span·class="p"·data-group-id="2964134943-7">}</span><span·class="p">,</span><span·class="w"> |
| 246 | ···················</span><span·class="p"·data-group-id=" | 246 | ···················</span><span·class="p"·data-group-id="2964134943-8">{</span><span·class="ss">drinks</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">coke</span><span·class="p"·data-group-id="2964134943-8">}</span><span·class="p"·data-group-id="2964134943-6">]</span><span·class="p"·data-g[·...·truncated·by·diffoscope;·len:·19,·SHA:·ea49ffde027c79762eed80b01eac9e5e828c519d4c3caec501efcabdeee375e1·...·]-5">}</span><span·class="p">.</span><span·class="w"> |
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| 124 | </h2> | 124 | </h2> |
| 125 | <p>To·illustrate·this,·the·messenger·example·from·the·previous·section·is·divided | 125 | <p>To·illustrate·this,·the·messenger·example·from·the·previous·section·is·divided |
| 126 | into·the·following·five·files:</p><ul><li><p><code·class="inline">mess_config.hrl</code></p><p>Header·file·for·configuration·data</p></li><li><p><code·class="inline">mess_interface.hrl</code></p><p>Interface·definitions·between·the·client·and·the·messenger</p></li><li><p><code·class="inline">user_interface.erl</code></p><p>Functions·for·the·user·interface</p></li><li><p><code·class="inline">mess_client.erl</code></p><p>Functions·for·the·client·side·of·the·messenger</p></li><li><p><code·class="inline">mess_server.erl</code></p><p>Functions·for·the·server·side·of·the·messenger</p></li></ul><p>While·doing·this,·the·message·passing·interface·between·the·shell,·the·client, | 126 | into·the·following·five·files:</p><ul><li><p><code·class="inline">mess_config.hrl</code></p><p>Header·file·for·configuration·data</p></li><li><p><code·class="inline">mess_interface.hrl</code></p><p>Interface·definitions·between·the·client·and·the·messenger</p></li><li><p><code·class="inline">user_interface.erl</code></p><p>Functions·for·the·user·interface</p></li><li><p><code·class="inline">mess_client.erl</code></p><p>Functions·for·the·client·side·of·the·messenger</p></li><li><p><code·class="inline">mess_server.erl</code></p><p>Functions·for·the·server·side·of·the·messenger</p></li></ul><p>While·doing·this,·the·message·passing·interface·between·the·shell,·the·client, |
| 127 | and·the·server·is·cleaned·up·and·is·defined·using·<em>records</em>.·Also,·<em>macros</em>·are | 127 | and·the·server·is·cleaned·up·and·is·defined·using·<em>records</em>.·Also,·<em>macros</em>·are |
| 128 | introduced:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%%----FILE·mess_config.hrl----</span><span·class="w"> | 128 | introduced:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%%----FILE·mess_config.hrl----</span><span·class="w"> |
| 129 | </span><span·class="c1">%%%·Configure·the·location·of·the·server·node,</span><span·class="w"> | 129 | </span><span·class="c1">%%%·Configure·the·location·of·the·server·node,</span><span·class="w"> |
| 130 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id=" | 130 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="4415512392-1">(</span><span·class="ss">server_node</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">messenger@super</span><span·class="p"·data-group-id="4415512392-1">)</span><span·class="p">.</span><span·class="w"> |
| 131 | </span><span·class="c1">%%%----END·FILE----</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%%----FILE·mess_interface.hrl----</span><span·class="w"> | 131 | </span><span·class="c1">%%%----END·FILE----</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%%----FILE·mess_interface.hrl----</span><span·class="w"> |
| 132 | </span><span·class="c1">%%%·Message·interface·between·client·and·server·and·client·shell·for</span><span·class="w"> | 132 | </span><span·class="c1">%%%·Message·interface·between·client·and·server·and·client·shell·for</span><span·class="w"> |
| 133 | </span><span·class="c1">%%%·messenger·program</span><span·class="w"> | 133 | </span><span·class="c1">%%%·messenger·program</span><span·class="w"> |
| 134 | </span><span·class="c1">%%%Messages·from·Client·to·server·received·in·server/1·function.</span><span·class="w"> | 134 | </span><span·class="c1">%%%Messages·from·Client·to·server·received·in·server/1·function.</span><span·class="w"> |
| 135 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 135 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="0040439504-1">(</span><span·class="ss">logon</span><span·class="p">,</span><span·class="p"·data-group-id="0040439504-2">{</span><span·class="ss">client_pid</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">username</span><span·class="p[·...·truncated·by·diffoscope;·len:·80,·SHA:·8a206e6269212fd45afe01dfda111197645b55e1e1c8b6eff085f7760aa15bcd·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 136 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 136 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="0040439504-3">(</span><span·class="ss">message</span><span·class="p">,</span><span·class="p"·data-group-id="0040439504-4">{</span><span·class="ss">client_pid</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">to_name</span><span·class="[·...·truncated·by·diffoscope;·len:·160,·SHA:·bf4ae7217247bd18d4e22c351f80fe8efb02dc8ef36fe1661d8c3072b3b6cb13·...·]-3">)</span><span·class="p">.</span><span·class="w"> |
| 137 | </span><span·class="c1">%%%·{'EXIT',·ClientPid,·Reason}··(client·terminated·or·unreachable.</span><span·class="w"> | 137 | </span><span·class="c1">%%%·{'EXIT',·ClientPid,·Reason}··(client·terminated·or·unreachable.</span><span·class="w"> |
| 138 | </span><span·class="c1">%%%·Messages·from·Server·to·Client,·received·in·await_result/0·function</span><span·class="w"> | 138 | </span><span·class="c1">%%%·Messages·from·Server·to·Client,·received·in·await_result/0·function</span><span·class="w"> |
| 139 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 139 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="0040439504-5">(</span><span·class="ss">abort_client</span><span·class="p">,</span><span·class="p"·data-group-id="0040439504-6">{</span><span·class="ss">message</span><span·class="p"·data-group-id="0040439504-6">}</span><span·class="p"·data-group-id="004043[·...·truncated·by·diffoscope;·len:·4,·SHA:·886359a0e6d7d6554327ef21870c583c3a8ec9fc586a13cd32ef8b94b241d098·...·]-5">)</span><span·class="p">.</span><span·class="w"> |
| 140 | </span><span·class="c1">%%%·Messages·are:·user_exists_at_other_node,</span><span·class="w"> | 140 | </span><span·class="c1">%%%·Messages·are:·user_exists_at_other_node,</span><span·class="w"> |
| 141 | </span><span·class="c1">%%%···············you_are_not_logged_on</span><span·class="w"> | 141 | </span><span·class="c1">%%%···············you_are_not_logged_on</span><span·class="w"> |
| 142 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 142 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="0040439504-7">(</span><span·class="ss">server_reply</span><span·class="p">,</span><span·class="p"·data-group-id="0040439504-8">{</span><span·class="ss">message</span><span·class="p"·data-group-id="0040439504-8">}</span><span·class="p"·data-group-id="004043[·...·truncated·by·diffoscope;·len:·4,·SHA:·886359a0e6d7d6554327ef21870c583c3a8ec9fc586a13cd32ef8b94b241d098·...·]-7">)</span><span·class="p">.</span><span·class="w"> |
| 143 | </span><span·class="c1">%%%·Messages·are:·logged_on</span><span·class="w"> | 143 | </span><span·class="c1">%%%·Messages·are:·logged_on</span><span·class="w"> |
| 144 | </span><span·class="c1">%%%···············receiver_not_found</span><span·class="w"> | 144 | </span><span·class="c1">%%%···············receiver_not_found</span><span·class="w"> |
| 145 | </span><span·class="c1">%%%···············sent··(Message·has·been·sent·(no·guarantee)</span><span·class="w"> | 145 | </span><span·class="c1">%%%···············sent··(Message·has·been·sent·(no·guarantee)</span><span·class="w"> |
| 146 | </span><span·class="c1">%%%·Messages·from·Server·to·Client·received·in·client/1·function</span><span·class="w"> | 146 | </span><span·class="c1">%%%·Messages·from·Server·to·Client·received·in·client/1·function</span><span·class="w"> |
| 147 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 147 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="0040439504-9">(</span><span·class="ss">message_from</span><span·class="p">,</span><span·class="p"·data-group-id="0040439504-10">{</span><span·class="ss">from_name</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">message</span><span·cl[·...·truncated·by·diffoscope;·len:·87,·SHA:·c8dc175521880b7cb45c1c20006f4b7b04e73951bafe320b67d294d24ffe4115·...·]-9">)</span><span·class="p">.</span><span·class="w"> |
| 148 | </span><span·class="c1">%%%·Messages·from·shell·to·Client·received·in·client/1·function</span><span·class="w"> | 148 | </span><span·class="c1">%%%·Messages·from·shell·to·Client·received·in·client/1·function</span><span·class="w"> |
| 149 | </span><span·class="c1">%%%·spawn(mess_client,·client,·[server_node(),·Name])</span><span·class="w"> | 149 | </span><span·class="c1">%%%·spawn(mess_client,·client,·[server_node(),·Name])</span><span·class="w"> |
| 150 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 150 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="0040439504-11">(</span><span·class="ss">message_to</span><span·class="p">,</span><span·class="p"·data-group-id="0040439504-12">{</span><span·class="ss">to_name</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">message</span><span·class[·...·truncated·by·diffoscope;·len:·84,·SHA:·9bb769a0bfdecac2d984c09478632c377db6c4cd17aedaacb15423b5d21e754e·...·]-11">)</span><span·class="p">.</span><span·class="w"> |
| 151 | </span><span·class="c1">%%%·logoff</span><span·class="w"> | 151 | </span><span·class="c1">%%%·logoff</span><span·class="w"> |
| 152 | </span><span·class="c1">%%%----END·FILE----</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%%----FILE·user_interface.erl----</span><span·class="w"> | 152 | </span><span·class="c1">%%%----END·FILE----</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%%----FILE·user_interface.erl----</span><span·class="w"> |
| 153 | </span><span·class="c1">%%%·User·interface·to·the·messenger·program</span><span·class="w"> | 153 | </span><span·class="c1">%%%·User·interface·to·the·messenger·program</span><span·class="w"> |
| 154 | </span><span·class="c1">%%%·login(Name)</span><span·class="w"> | 154 | </span><span·class="c1">%%%·login(Name)</span><span·class="w"> |
| 155 | </span><span·class="c1">%%%·····One·user·at·a·time·can·log·in·from·each·Erlang·node·in·the</span><span·class="w"> | 155 | </span><span·class="c1">%%%·····One·user·at·a·time·can·log·in·from·each·Erlang·node·in·the</span><span·class="w"> |
| Offset 170, 177 lines modified | Offset 170, 177 lines modified | ||
| 170 | </span><span·class="c1">%%%·····Logs·off·anybody·at·that·node</span><span·class="w"> | 170 | </span><span·class="c1">%%%·····Logs·off·anybody·at·that·node</span><span·class="w"> |
| 171 | </span><span·class="c1">%%%·message(ToName,·Message)</span><span·class="w"> | 171 | </span><span·class="c1">%%%·message(ToName,·Message)</span><span·class="w"> |
| 172 | </span><span·class="c1">%%%·····sends·Message·to·ToName.·Error·messages·if·the·user·of·this</span><span·class="w"> | 172 | </span><span·class="c1">%%%·····sends·Message·to·ToName.·Error·messages·if·the·user·of·this</span><span·class="w"> |
| 173 | </span><span·class="c1">%%%·····function·is·not·logged·on·or·if·ToName·is·not·logged·on·at</span><span·class="w"> | 173 | </span><span·class="c1">%%%·····function·is·not·logged·on·or·if·ToName·is·not·logged·on·at</span><span·class="w"> |
| 174 | </span><span·class="c1">%%%·····any·node.</span><span·class="w"> | 174 | </span><span·class="c1">%%%·····any·node.</span><span·class="w"> |
| 175 | </span><span·class="w"> | 175 | </span><span·class="w"> |
| 176 | </span><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 176 | </span><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="2334354249-1">(</span><span·class="ss">user_interface</span><span·class="p"·data-group-id="2334354249-1">)</span><span·class="p">.</span><span·class="w"> |
| 177 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 177 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="2334354249-2">(</span><span·class="p"·data-group-id="2334354249-3">[</span><span·class="ss">logon</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">logoff</span><span·class="p">/</span><[·...·truncated·by·diffoscope;·len:·246,·SHA:·72e53bc03d2cba3eac47972bebab48ae5ca1e1d7893c43f1c90850254ba1b86a·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 178 | </span><span·class="p">-</span><span·class="na">include</span><span·class="p"·data-group-id=" | 178 | </span><span·class="p">-</span><span·class="na">include</span><span·class="p"·data-group-id="2334354249-4">(</span><span·class="s">"mess_interface.hrl"</span><span·class="p"·data-group-id="2334354249-4">)</span><span·class="p">.</span><span·class="w"> |
| 179 | </span><span·class="p">-</span><span·class="na">include</span><span·class="p"·data-group-id=" | 179 | </span><span·class="p">-</span><span·class="na">include</span><span·class="p"·data-group-id="2334354249-5">(</span><span·class="s">"mess_config.hrl"</span><span·class="p"·data-group-id="2334354249-5">)</span><span·class="p">.</span><span·class="w"> |
| 180 | </span><span·class="nf">logon</span><span·class="p"·data-group-id=" | 180 | </span><span·class="nf">logon</span><span·class="p"·data-group-id="2334354249-6">(</span><span·class="n">Name</span><span·class="p"·data-group-id="2334354249-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 181 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">whereis</span><span·class="p"·data-group-id=" | 181 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">whereis</span><span·class="p"·data-group-id="2334354249-7">(</span><span·class="ss">mess_client</span><span·class="p"·data-group-id="2334354249-7">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 182 | ········</span><span·class="ss">undefined</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 182 | ········</span><span·class="ss">undefined</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 183 | ············</span><span·class="nf">register</span><span·class="p"·data-group-id=" | 183 | ············</span><span·class="nf">register</span><span·class="p"·data-group-id="2334354249-8">(</span><span·class="ss">mess_client</span><span·class="p">,</span><span·class="w"> |
| 184 | ·····················</span><span·class="nf">spawn</span><span·class="p"·data-group-id=" | 184 | ·····················</span><span·class="nf">spawn</span><span·class="p"·data-group-id="2334354249-9">(</span><span·class="ss">mess_client</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">client</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2334354249-10">[</span><span·class="o">?</[·...·truncated·by·diffoscope;·len:·263,·SHA:·abeabf2ab3a36ddb1ef9fa3da0c93083b7fdd76670a5e8a3fa79a17a20fcd449·...·]-8">)</span><span·class="p">;</span><span·class="w"> |
| 185 | ········</span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">already_logged_on</span><span·class="w"> | 185 | ········</span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">already_logged_on</span><span·class="w"> |
| 186 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 186 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 187 | </span><span·class="nf">logoff</span><span·class="p"·data-group-id=" | 187 | </span><span·class="nf">logoff</span><span·class="p"·data-group-id="2334354249-11">(</span><span·class="p"·data-group-id="2334354249-11">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 188 | ····</span><span·class="ss">mess_client</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="ss">logoff</span><span·class="p">.</span><span·class="w"> | 188 | ····</span><span·class="ss">mess_client</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="ss">logoff</span><span·class="p">.</span><span·class="w"> |
| 189 | </span><span·class="nf">message</span><span·class="p"·data-group-id=" | 189 | </span><span·class="nf">message</span><span·class="p"·data-group-id="2334354249-12">(</span><span·class="n">ToName</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Message</span><span·class="p"·data-group-id="2334354249-12">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 190 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">whereis</span><span·class="p"·data-group-id=" | 190 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">whereis</span><span·class="p"·data-group-id="2334354249-13">(</span><span·class="ss">mess_client</span><span·class="p"·data-group-id="2334354249-13">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w">·</span><span·class="c1">%·Test·if·the·client·is·running</span><span·class="w"> |
| 191 | ········</span><span·class="ss">undefined</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 191 | ········</span><span·class="ss">undefined</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 192 | ············</span><span·class="ss">not_logged_on</span><span·class="p">;</span><span·class="w"> | 192 | ············</span><span·class="ss">not_logged_on</span><span·class="p">;</span><span·class="w"> |
| 193 | ········</span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">mess_client</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">message_to</span><span·class="p"·data-group-id=" | 193 | ········</span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">mess_client</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">message_to</span><span·class="p"·data-group-id="2334354249-14">{</span><span·class="ss">to_name</span><span·class="o">=</span><span·class="n">ToName</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">message</span><span·class="o">=</span><span·class="n">Message</span><span·class="p"·[·...·truncated·by·diffoscope;·len:·25,·SHA:·2287f105daa9d62d7122907f406b8fc3a70e63d890355cae13416ffe1707f726·...·]-14">}</span><span·class="p">,</span><span·class="w"> |
| 194 | ·············</span><span·class="ss">ok</span><span·class="w"> | 194 | ·············</span><span·class="ss">ok</span><span·class="w"> |
| 195 | </span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 195 | </span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 196 | </span><span·class="c1">%%%----END·FILE----</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%%----FILE·mess_client.erl----</span><span·class="w"> | 196 | </span><span·class="c1">%%%----END·FILE----</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%%----FILE·mess_client.erl----</span><span·class="w"> |
| 197 | </span><span·class="c1">%%%·The·client·process·which·runs·on·each·user·node</span><span·class="w"> | 197 | </span><span·class="c1">%%%·The·client·process·which·runs·on·each·user·node</span><span·class="w"> |
| 198 | </span><span·class="w"> | 198 | </span><span·class="w"> |
| 199 | </span><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="2 | 199 | </span><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="2226197885-1">(</span><span·class="ss">mess_client</span><span·class="p"·data-group-id="2226197885-1">)</span><span·class="p">.</span><span·class="w"> |
| 200 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="2 | 200 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="2226197885-2">(</span><span·class="p"·data-group-id="2226197885-3">[</span><span·class="ss">client</span><span·class="p">/</span><span·class="mi">2</span><span·class="p"·data-group-id="2226197885-3">]</span><span·class="p"·data-group-id="2226197885-2">)</span><span·class="p">.</span><span·class="w"> |
| 201 | </span><span·class="p">-</span><span·class="na">include</span><span·class="p"·data-group-id="2 | 201 | </span><span·class="p">-</span><span·class="na">include</span><span·class="p"·data-group-id="2226197885-4">(</span><span·class="s">"mess_interface.hrl"</span><span·class="p"·data-group-id="2226197885-4">)</span><span·class="p">.</span><span·class="w"> |
| 202 | </span><span·class="nf">client</span><span·class="p"·data-group-id="2 | 202 | </span><span·class="nf">client</span><span·class="p"·data-group-id="2226197885-5">(</span><span·class="n">Server_Node</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Name</span><span·class="p"·data-group-id="2226197885-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 203 | ····</span><span·class="p"·data-group-id="2 | 203 | ····</span><span·class="p"·data-group-id="2226197885-6">{</span><span·class="ss">messenger</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Server_Node</span><span·class="p"·data-group-id="2226197885-6">}</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</[·...·truncated·by·diffoscope;·len:·475,·SHA:·1ea09e53e1ec5547f454188decada6e7393cfc3ba55d9a7ae5570257476fa221·...·]-7">}</span><span·class="p">,</span><span·class="w"> |
| 204 | ····</span><span·class="nf">await_result</span><span·class="p"·data-group-id="2 | 204 | ····</span><span·class="nf">await_result</span><span·class="p"·data-group-id="2226197885-9">(</span><span·class="p"·data-group-id="2226197885-9">)</span><span·class="p">,</span><span·class="w"> |
| 205 | ····</span><span·class="nf">client</span><span·class="p"·data-group-id="2 | 205 | ····</span><span·class="nf">client</span><span·class="p"·data-group-id="2226197885-10">(</span><span·class="n">Server_Node</span><span·class="p"·data-group-id="2226197885-10">)</span><span·class="p">.</span><span·class="w"> |
| 206 | </span><span·class="nf">client</span><span·class="p"·data-group-id="2 | 206 | </span><span·class="nf">client</span><span·class="p"·data-group-id="2226197885-11">(</span><span·class="n">Server_Node</span><span·class="p"·data-group-id="2226197885-11">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 207 | ····</span><span·class="k">receive</span><span·class="w"> | 207 | ····</span><span·class="k">receive</span><span·class="w"> |
| 208 | ········</span><span·class="ss">logoff</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 208 | ········</span><span·class="ss">logoff</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 209 | ············</span><span·class="nf">exit</span><span·class="p"·data-group-id="2 | 209 | ············</span><span·class="nf">exit</span><span·class="p"·data-group-id="2226197885-12">(</span><span·class="ss">normal</span><span·class="p"·data-group-id="2226197885-12">)</span><span·class="p">;</span><span·class="w"> |
| 210 | ········</span><span·class="o">#</span><span·class="ss">message_to</span><span·class="p"·data-group-id="2 | 210 | ········</span><span·class="o">#</span><span·class="ss">message_to</span><span·class="p"·data-group-id="2226197885-13">{</span><span·class="ss">to_name</span><span·class="o">=</span><span·class="n">ToName</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">message</span><span·class="o">=</span><span·class="n">Message</span><span·class="p"·d[·...·truncated·by·diffoscope;·len:·24,·SHA:·0f01cdbf931dd3c05f75a92ff0842a409da8af7bfba85ba9a871362b621c2f32·...·]-13">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 211 | ············</span><span·class="p"·data-group-id="2 | 211 | ············</span><span·class="p"·data-group-id="2226197885-14">{</span><span·class="ss">messenger</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Server_Node</span><span·class="p"·data-group-id="2226197885-14">}</span><span·class="w">·</span><span·class="o">!</span><span·class="w"> |
| 212 | ················</span><span·class="o">#</span><span·class="ss">message</span><span·class="p"·data-group-id="2 | 212 | ················</span><span·class="o">#</span><span·class="ss">message</span><span·class="p"·data-group-id="2226197885-15">{</span><span·class="ss">client_pid</span><span·class="o">=</span><span·class="nf">self</span><span·class="p"·data-group-id="2226197885-16">(</span><span·class="p"·data-group-id="2226197885-16">)</span><span·class="p">,</span><span·class="w">[·...·truncated·by·diffoscope;·len:·266,·SHA:·a5882d55291c8f940f12d5535c73651e0beac0fea551a8e4bf655899069d7a5f·...·]-15">}</span><span·class="p">,</span><span·class="w"> |
| 213 | ············</span><span·class="nf">await_result</span><span·class="p"·data-group-id="2 | 213 | ············</span><span·class="nf">await_result</span><span·class="p"·data-group-id="2226197885-17">(</span><span·class="p"·data-group-id="2226197885-17">)</span><span·class="p">;</span><span·class="w"> |
| 214 | ········</span><span·class="p"·data-group-id="2 | 214 | ········</span><span·class="p"·data-group-id="2226197885-18">{</span><span·class="ss">message_from</span><span·class="p">,</span><span·class="w">·</span><span·class="n">FromName</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Message</span><span·class="p"·data-group-id="2226197885-18">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 215 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="2 | 215 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="2226197885-19">(</span><span·class="s">"Message·from·</span><span·class="si">~p</span><span·class="s">:·</span><span·class="si">~p</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class=[·...·truncated·by·diffoscope;·len:·246,·SHA:·aecc60786dd2c0f1b98f98e65146f076de91493606f0ab2efa6f130bde3eb9e2·...·]-19">)</span><span·class="w"> |
| 216 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 216 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 217 | ····</span><span·class="nf">client</span><span·class="p"·data-group-id="2 | 217 | ····</span><span·class="nf">client</span><span·class="p"·data-group-id="2226197885-21">(</span><span·class="n">Server_Node</span><span·class="p"·data-group-id="2226197885-21">)</span><span·class="p">.</span><span·class="w"> |
| 218 | </span><span·class="c1">%%%·wait·for·a·response·from·the·server</span><span·class="w"> | 218 | </span><span·class="c1">%%%·wait·for·a·response·from·the·server</span><span·class="w"> |
| 219 | </span><span·class="nf">await_result</span><span·class="p"·data-group-id="2 | 219 | </span><span·class="nf">await_result</span><span·class="p"·data-group-id="2226197885-22">(</span><span·class="p"·data-group-id="2226197885-22">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 220 | ····</span><span·class="k">receive</span><span·class="w"> | 220 | ····</span><span·class="k">receive</span><span·class="w"> |
| 221 | ········</span><span·class="o">#</span><span·class="ss">abort_client</span><span·class="p"·data-group-id="2 | 221 | ········</span><span·class="o">#</span><span·class="ss">abort_client</span><span·class="p"·data-group-id="2226197885-23">{</span><span·class="ss">message</span><span·class="o">=</span><span·class="n">Why</span><span·class="p"·data-group-id="2226197885-23">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 222 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="2 | 222 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="2226197885-24">(</span><span·class="s">"</span><span·class="si">~p</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2226197885-25">[</span><span·class="n">Why</s[·...·truncated·by·diffoscope;·len:·99,·SHA:·2f616b6b32bac782453dbef177fffa0e8c37f9d679dc058ac2e81d1f4b17011f·...·]-24">)</span><span·class="p">,</span><span·class="w"> |
| 223 | ············</span><span·class="nf">exit</span><span·class="p"·data-group-id="2 | 223 | ············</span><span·class="nf">exit</span><span·class="p"·data-group-id="2226197885-26">(</span><span·class="ss">normal</span><span·class="p"·data-group-id="2226197885-26">)</span><span·class="p">;</span><span·class="w"> |
| 224 | ········</span><span·class="o">#</span><span·class="ss">server_reply</span><span·class="p"·data-group-id="2 | 224 | ········</span><span·class="o">#</span><span·class="ss">server_reply</span><span·class="p"·data-group-id="2226197885-27">{</span><span·class="ss">message</span><span·class="o">=</span><span·class="n">What</span><span·class="p"·data-group-id="2226197885-27">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 225 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="2 | 225 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="2226197885-28">(</span><span·class="s">"</span><span·class="si">~p</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2226197885-29">[</span><span·class="n">What</[·...·truncated·by·diffoscope;·len:·100,·SHA:·5a787a54503e6f5d8d59074f4450065825b3fa4a348e4feb7202fe8902c38a22·...·]-28">)</span><span·class="w"> |
| 226 | ····</span><span·class="k">after</span><span·class="w">·</span><span·class="mi">5000</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 226 | ····</span><span·class="k">after</span><span·class="w">·</span><span·class="mi">5000</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 227 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="2 | 227 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="2226197885-30">(</span><span·class="s">"No·response·from·server</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2226197885-31">[</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·70,·SHA:·8c2df3ffee21078cc0cd663457c85c9fabdd5f1db50f5d65e3fe8c0191ce66d9·...·]-30">)</span><span·class="p">,</span><span·class="w"> |
| 228 | ············</span><span·class="nf">exit</span><span·class="p"·data-group-id="2 | 228 | ············</span><span·class="nf">exit</span><span·class="p"·data-group-id="2226197885-32">(</span><span·class="ss">timeout</span><span·class="p"·data-group-id="2226197885-32">)</span><span·class="w"> |
| 229 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 229 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 230 | </span><span·class="c1">%%%----END·FILE---</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%%----FILE·mess_server.erl----</span><span·class="w"> | 230 | </span><span·class="c1">%%%----END·FILE---</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%%----FILE·mess_server.erl----</span><span·class="w"> |
| 231 | </span><span·class="c1">%%%·This·is·the·server·process·of·the·messenger·service</span><span·class="w"> | 231 | </span><span·class="c1">%%%·This·is·the·server·process·of·the·messenger·service</span><span·class="w"> |
| 232 | </span><span·class="w"> | 232 | </span><span·class="w"> |
| 233 | </span><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 233 | </span><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="4180778397-1">(</span><span·class="ss">mess_server</span><span·class="p"·data-group-id="4180778397-1">)</span><span·class="p">.</span><span·class="w"> |
| 234 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 234 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="4180778397-2">(</span><span·class="p"·data-group-id="4180778397-3">[</span><span·class="ss">start_server</span><span·class="p">/</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">server</span><span·class="p">/<[·...·truncated·by·diffoscope;·len:·124,·SHA:·aee49bf40ec349b2c32a9d66bf97a2e881026a09406025d7115ace7d6d2a89db·...·]7-2">)</span><span·class="p">.</span><span·class="w"> |
| 235 | </span><span·class="p">-</span><span·class="na">include</span><span·class="p"·data-group-id=" | 235 | </span><span·class="p">-</span><span·class="na">include</span><span·class="p"·data-group-id="4180778397-4">(</span><span·class="s">"mess_interface.hrl"</span><span·class="p"·data-group-id="4180778397-4">)</span><span·class="p">.</span><span·class="w"> |
| 236 | </span><span·class="nf">server</span><span·class="p"·data-group-id=" | 236 | </span><span·class="nf">server</span><span·class="p"·data-group-id="4180778397-5">(</span><span·class="p"·data-group-id="4180778397-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 237 | ····</span><span·class="nf">process_flag</span><span·class="p"·data-group-id=" | 237 | ····</span><span·class="nf">process_flag</span><span·class="p"·data-group-id="4180778397-6">(</span><span·class="ss">trap_exit</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">true</span><span·class="p"·data-group-id="4180778397-6">)</span><span·class="p">,</span><span·class="w"> |
| 238 | ····</span><span·class="nf">server</span><span·class="p"·data-group-id=" | 238 | ····</span><span·class="nf">server</span><span·class="p"·data-group-id="4180778397-7">(</span><span·class="p"·data-group-id="4180778397-8">[</span><span·class="p"·data-group-id="4180778397-8">]</span><span·class="p"·data-group-id="4180778397-7">)</span><span·class="p">.</span><span·class="w"> |
| 239 | </span><span·class="c1">%%%·the·user·list·has·the·format·[{ClientPid1,·Name1},{ClientPid22,·Name2},...]</span><span·class="w"> | 239 | </span><span·class="c1">%%%·the·user·list·has·the·format·[{ClientPid1,·Name1},{ClientPid22,·Name2},...]</span><span·class="w"> |
| 240 | </span><span·class="nf">server</span><span·class="p"·data-group-id=" | 240 | </span><span·class="nf">server</span><span·class="p"·data-group-id="4180778397-9">(</span><span·class="n">User_List</span><span·class="p"·data-group-id="4180778397-9">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 241 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 241 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="4180778397-10">(</span><span·class="s">"User·list·=·</span><span·class="si">~p</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4180778397-11">[</span><span·cla[·...·truncated·by·diffoscope;·len:·117,·SHA:·2e715cf1148185900e62d28c5d1d0fcb030cc4740907e29279e572d7d447ef07·...·]7-10">)</span><span·class="p">,</span><span·class="w"> |
| 242 | ····</span><span·class="k">receive</span><span·class="w"> | 242 | ····</span><span·class="k">receive</span><span·class="w"> |
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| 120 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 120 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 121 | ··</a> | 121 | ··</a> |
| 122 | ··<span·class="text">Function·Declaration·Syntax</span> | 122 | ··<span·class="text">Function·Declaration·Syntax</span> |
| 123 | </h2> | 123 | </h2> |
| 124 | <p>A·<em>function·declaration</em>·is·a·sequence·of·function·clauses·separated·by | 124 | <p>A·<em>function·declaration</em>·is·a·sequence·of·function·clauses·separated·by |
| 125 | semicolons,·and·terminated·by·a·period·(<code·class="inline">.</code>).</p><p>A·<em>function·clause</em>·consists·of·a·<em>clause·head</em>·and·a·<em>clause·body</em>,·separated·by | 125 | semicolons,·and·terminated·by·a·period·(<code·class="inline">.</code>).</p><p>A·<em>function·clause</em>·consists·of·a·<em>clause·head</em>·and·a·<em>clause·body</em>,·separated·by |
| 126 | <code·class="inline">-></code>.</p><p>A·clause·<em>head</em>·consists·of·the·function·name,·an·argument·list,·and·an·optional | 126 | <code·class="inline">-></code>.</p><p>A·clause·<em>head</em>·consists·of·the·function·name,·an·argument·list,·and·an·optional |
| 127 | guard·sequence·beginning·with·the·keyword·<code·class="inline">when</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Name</span><span·class="p"·data-group-id=" | 127 | guard·sequence·beginning·with·the·keyword·<code·class="inline">when</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Name</span><span·class="p"·data-group-id="0365494161-1">(</span><span·class="n">Pattern11</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">,</span><span·class="n">Pattern1N</span><span·class="p"·data-group-id="0365494161-1">)</sp[·...·truncated·by·diffoscope;·len:·204,·SHA:·b7ab952dda3b6515eb440c51d3f8c29ebb701c2c1386efd2273da76fab547060·...·]-2">]</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 128 | ····</span><span·class="n">Body1</span><span·class="p">;</span><span·class="w"> | 128 | ····</span><span·class="n">Body1</span><span·class="p">;</span><span·class="w"> |
| 129 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">;</span><span·class="w"> | 129 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">;</span><span·class="w"> |
| 130 | </span><span·class="n">Name</span><span·class="p"·data-group-id=" | 130 | </span><span·class="n">Name</span><span·class="p"·data-group-id="0365494161-3">(</span><span·class="n">PatternK1</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">,</span><span·class="n">PatternKN</span><span·class="p"·data-group-id="0365494161-3">)</sp[·...·truncated·by·diffoscope;·len:·204,·SHA:·64f25a821117de3a0208c3e5a8a0ca5cf69a8cdc1903326b431213f244d412bc·...·]-4">]</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 131 | ····</span><span·class="n">BodyK</span><span·class="p">.</span></code></pre><p>The·function·name·is·an·atom.·Each·argument·is·a·pattern.</p><p>The·number·of·arguments·<code·class="inline">N</code>·is·the·<em>arity</em>·of·the·function.·A·function·is | 131 | ····</span><span·class="n">BodyK</span><span·class="p">.</span></code></pre><p>The·function·name·is·an·atom.·Each·argument·is·a·pattern.</p><p>The·number·of·arguments·<code·class="inline">N</code>·is·the·<em>arity</em>·of·the·function.·A·function·is |
| 132 | uniquely·defined·by·the·module·name,·function·name,·and·arity.·That·is,·two | 132 | uniquely·defined·by·the·module·name,·function·name,·and·arity.·That·is,·two |
| 133 | functions·with·the·same·name·and·in·the·same·module,·but·with·different·arities | 133 | functions·with·the·same·name·and·in·the·same·module,·but·with·different·arities |
| 134 | are·two·different·functions.</p><p>A·function·named·<code·class="inline">f</code>·in·module·<code·class="inline">mod</code>·and·with·arity·<code·class="inline">N</code>·is·often·denoted·as | 134 | are·two·different·functions.</p><p>A·function·named·<code·class="inline">f</code>·in·module·<code·class="inline">mod</code>·and·with·arity·<code·class="inline">N</code>·is·often·denoted·as |
| 135 | <code·class="inline">mod:f/N</code>.</p><p>A·clause·<em>body</em>·consists·of·a·sequence·of·expressions·separated·by·comma·(<code·class="inline">,</code>):</p><pre><code·class="text">Expr1, | 135 | <code·class="inline">mod:f/N</code>.</p><p>A·clause·<em>body</em>·consists·of·a·sequence·of·expressions·separated·by·comma·(<code·class="inline">,</code>):</p><pre><code·class="text">Expr1, |
| 136 | ..., | 136 | ..., |
| 137 | ExprN</code></pre><p>Valid·Erlang·expressions·and·guard·sequences·are·described·in | 137 | ExprN</code></pre><p>Valid·Erlang·expressions·and·guard·sequences·are·described·in |
| 138 | <a·href="expressions.html">Expressions</a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fact</span><span·class="p"·data-group-id=" | 138 | <a·href="expressions.html">Expressions</a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fact</span><span·class="p"·data-group-id="0849621277-1">(</span><span·class="n">N</span><span·class="p"·data-group-id="0849621277-1">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="n">N</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="p">-></span><span·class="w">··</span><span·class="c1">%·first·clause·head</span><span·class="w"> |
| 139 | ····</span><span·class="n">N</span><span·class="w">·</span><span·class="o">*</span><span·class="w">·</span><span·class="nf">fact</span><span·class="p"·data-group-id=" | 139 | ····</span><span·class="n">N</span><span·class="w">·</span><span·class="o">*</span><span·class="w">·</span><span·class="nf">fact</span><span·class="p"·data-group-id="0849621277-2">(</span><span·class="n">N</span><span·class="o">-</span><span·class="mi">1</span><span·class="p"·data-group-id="0849621277-2">)</span><span·class="p">;</span><span·class="w">·····</span><span·class="c1">%·first·clause·body</span><span·class="w"> |
| 140 | </span><span·class="nf">fact</span><span·class="p"·data-group-id=" | 140 | </span><span·class="nf">fact</span><span·class="p"·data-group-id="0849621277-3">(</span><span·class="mi">0</span><span·class="p"·data-group-id="0849621277-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·············</span><span·class="c1">%·second·clause·head</span><span·class="w"> |
| 141 | ····</span><span·class="mi">1</span><span·class="p">.</span><span·class="w">·················</span><span·class="c1">%·second·clause·body</span></code></pre><p><a·href=""·id="eval"></a></p><h2·id="function-evaluation"·class="section-heading"> | 141 | ····</span><span·class="mi">1</span><span·class="p">.</span><span·class="w">·················</span><span·class="c1">%·second·clause·body</span></code></pre><p><a·href=""·id="eval"></a></p><h2·id="function-evaluation"·class="section-heading"> |
| 142 | ··<a·href="#function-evaluation"·class="hover-link"> | 142 | ··<a·href="#function-evaluation"·class="hover-link"> |
| 143 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 143 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 144 | ··</a> | 144 | ··</a> |
| 145 | ··<span·class="text">Function·Evaluation</span> | 145 | ··<span·class="text">Function·Evaluation</span> |
| 146 | </h2> | 146 | </h2> |
| 147 | <p>When·a·function·<code·class="inline">M:F/N</code>·is·called,·first·the·code·for·the·function·is·located. | 147 | <p>When·a·function·<code·class="inline">M:F/N</code>·is·called,·first·the·code·for·the·function·is·located. |
| 148 | If·the·function·cannot·be·found,·an·<code·class="inline">undef</code>·runtime·error·occurs.·Notice·that | 148 | If·the·function·cannot·be·found,·an·<code·class="inline">undef</code>·runtime·error·occurs.·Notice·that |
| 149 | the·function·must·be·exported·to·be·visible·outside·the·module·it·is·defined·in.</p><p>If·the·function·is·found,·the·function·clauses·are·scanned·sequentially·until·a | 149 | the·function·must·be·exported·to·be·visible·outside·the·module·it·is·defined·in.</p><p>If·the·function·is·found,·the·function·clauses·are·scanned·sequentially·until·a |
| 150 | clause·is·found·that·fulfills·both·of·the·following·two·conditions:</p><ol><li>The·patterns·in·the·clause·head·can·be·successfully·matched·against·the·given | 150 | clause·is·found·that·fulfills·both·of·the·following·two·conditions:</p><ol><li>The·patterns·in·the·clause·head·can·be·successfully·matched·against·the·given |
| 151 | arguments.</li><li>The·guard·sequence,·if·any,·is·true.</li></ol><p>If·such·a·clause·cannot·be·found,·a·<code·class="inline">function_clause</code>·runtime·error·occurs.</p><p>If·such·a·clause·is·found,·the·corresponding·clause·body·is·evaluated.·That·is, | 151 | arguments.</li><li>The·guard·sequence,·if·any,·is·true.</li></ol><p>If·such·a·clause·cannot·be·found,·a·<code·class="inline">function_clause</code>·runtime·error·occurs.</p><p>If·such·a·clause·is·found,·the·corresponding·clause·body·is·evaluated.·That·is, |
| 152 | the·expressions·in·the·body·are·evaluated·sequentially·and·the·value·of·the·last | 152 | the·expressions·in·the·body·are·evaluated·sequentially·and·the·value·of·the·last |
| 153 | expression·is·returned.</p><p>Consider·the·function·<code·class="inline">fact</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="5 | 153 | expression·is·returned.</p><p>Consider·the·function·<code·class="inline">fact</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="9510709579-1">(</span><span·class="ss">mod</span><span·class="p"·data-group-id="9510709579-1">)</span><span·class="p">.</span><span·class="w"> |
| 154 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="5 | 154 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="9510709579-2">(</span><span·class="p"·data-group-id="9510709579-3">[</span><span·class="ss">fact</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id="9510709579-3">]</span><span·class="p"·data-group-id="9510709579-2">)</span><span·class="p">.</span><span·class="w"> |
| 155 | </span><span·class="nf">fact</span><span·class="p"·data-group-id="5 | 155 | </span><span·class="nf">fact</span><span·class="p"·data-group-id="9510709579-4">(</span><span·class="n">N</span><span·class="p"·data-group-id="9510709579-4">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="n">N</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 156 | ····</span><span·class="n">N</span><span·class="w">·</span><span·class="o">*</span><span·class="w">·</span><span·class="nf">fact</span><span·class="p"·data-group-id="5 | 156 | ····</span><span·class="n">N</span><span·class="w">·</span><span·class="o">*</span><span·class="w">·</span><span·class="nf">fact</span><span·class="p"·data-group-id="9510709579-5">(</span><span·class="n">N</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="9510709579-5">)</span><span·class="p">;</span><span·class="w"> |
| 157 | </span><span·class="nf">fact</span><span·class="p"·data-group-id="5 | 157 | </span><span·class="nf">fact</span><span·class="p"·data-group-id="9510709579-6">(</span><span·class="mi">0</span><span·class="p"·data-group-id="9510709579-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 158 | ····</span><span·class="mi">1</span><span·class="p">.</span></code></pre><p>Assume·that·you·want·to·calculate·the·factorial·for·1:</p><pre><code·class="text">1>·mod:fact(1).</code></pre><p>Evaluation·starts·at·the·first·clause.·The·pattern·<code·class="inline">N</code>·is·matched·against | 158 | ····</span><span·class="mi">1</span><span·class="p">.</span></code></pre><p>Assume·that·you·want·to·calculate·the·factorial·for·1:</p><pre><code·class="text">1>·mod:fact(1).</code></pre><p>Evaluation·starts·at·the·first·clause.·The·pattern·<code·class="inline">N</code>·is·matched·against |
| 159 | argument·1.·The·matching·succeeds·and·the·guard·(<code·class="inline">N·>·0</code>)·is·true,·thus·<code·class="inline">N</code>·is | 159 | argument·1.·The·matching·succeeds·and·the·guard·(<code·class="inline">N·>·0</code>)·is·true,·thus·<code·class="inline">N</code>·is |
| 160 | bound·to·1,·and·the·corresponding·body·is·evaluated:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">N</span><span·class="w">·</span><span·class="o">*</span><span·class="w">·</span><span·class="nf">fact</span><span·class="p"·data-group-id=" | 160 | bound·to·1,·and·the·corresponding·body·is·evaluated:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">N</span><span·class="w">·</span><span·class="o">*</span><span·class="w">·</span><span·class="nf">fact</span><span·class="p"·data-group-id="4046066876-1">(</span><span·class="n">N</span><span·class="o">-</span><span·class="mi">1</span><span·class="p"·data-group-id="4046066876-1">)</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="4[·...·truncated·by·diffoscope;·len:·288,·SHA:·7b85e92e44764f7da3c414bf7ac0d4ecf7ad52f83e29c157607d06a79c152890·...·]-2">)</span><span·class="w"> |
| 161 | </span><span·class="mi">1</span><span·class="w">·</span><span·class="o">*</span><span·class="w">·</span><span·class="nf">fact</span><span·class="p"·data-group-id=" | 161 | </span><span·class="mi">1</span><span·class="w">·</span><span·class="o">*</span><span·class="w">·</span><span·class="nf">fact</span><span·class="p"·data-group-id="4046066876-3">(</span><span·class="mi">0</span><span·class="p"·data-group-id="4046066876-3">)</span></code></pre><p>Now,·<code·class="inline">fact(0)</code>·is·called,·and·the·function·clauses·are·scanned |
| 162 | sequentially·again.·First,·the·pattern·<code·class="inline">N</code>·is·matched·against·0.·The | 162 | sequentially·again.·First,·the·pattern·<code·class="inline">N</code>·is·matched·against·0.·The |
| 163 | matching·succeeds,·but·the·guard·(<code·class="inline">N·>·0</code>)·is·false.·Second,·the | 163 | matching·succeeds,·but·the·guard·(<code·class="inline">N·>·0</code>)·is·false.·Second,·the |
| 164 | pattern·<code·class="inline">0</code>·is·matched·against·the·argument·<code·class="inline">0</code>.·The·matching·succeeds | 164 | pattern·<code·class="inline">0</code>·is·matched·against·the·argument·<code·class="inline">0</code>.·The·matching·succeeds |
| 165 | and·the·body·is·evaluated:</p><pre><code·class="text">1·*·fact(0)·=> | 165 | and·the·body·is·evaluated:</p><pre><code·class="text">1·*·fact(0)·=> |
| 166 | 1·*·1·=> | 166 | 1·*·1·=> |
| 167 | 1</code></pre><p>Evaluation·has·succeed·and·<code·class="inline">mod:fact(1)</code>·returns·1.</p><p>If·<code·class="inline">mod:fact/1</code>·is·called·with·a·negative·number·as·argument,·no·clause·head | 167 | 1</code></pre><p>Evaluation·has·succeed·and·<code·class="inline">mod:fact(1)</code>·returns·1.</p><p>If·<code·class="inline">mod:fact/1</code>·is·called·with·a·negative·number·as·argument,·no·clause·head |
| 168 | matches.·A·<code·class="inline">function_clause</code>·runtime·error·occurs.</p><h2·id="tail-recursion"·class="section-heading"> | 168 | matches.·A·<code·class="inline">function_clause</code>·runtime·error·occurs.</p><h2·id="tail-recursion"·class="section-heading"> |
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| 173 | ··</a> | 173 | ··</a> |
| 174 | ··<span·class="text">Tail·recursion</span> | 174 | ··<span·class="text">Tail·recursion</span> |
| 175 | </h2> | 175 | </h2> |
| 176 | <p>If·the·last·expression·of·a·function·body·is·a·function·call,·a | 176 | <p>If·the·last·expression·of·a·function·body·is·a·function·call,·a |
| 177 | <em>tail-recursive·call</em>·is·done.·This·is·to·ensure·that·no·system | 177 | <em>tail-recursive·call</em>·is·done.·This·is·to·ensure·that·no·system |
| 178 | resources,·for·example,·call·stack,·are·consumed.·This·means·that·an | 178 | resources,·for·example,·call·stack,·are·consumed.·This·means·that·an |
| 179 | infinite·loop·using·tail-recursive·calls·will·not·exhaust·the·call | 179 | infinite·loop·using·tail-recursive·calls·will·not·exhaust·the·call |
| 180 | stack·and·can·(in·principle)·run·forever.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">loop</span><span·class="p"·data-group-id="3 | 180 | stack·and·can·(in·principle)·run·forever.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">loop</span><span·class="p"·data-group-id="3893039648-1">(</span><span·class="n">N</span><span·class="p"·data-group-id="3893039648-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 181 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="3 | 181 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="3893039648-2">(</span><span·class="s">"</span><span·class="si">~w</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3893039648-3">[</span><span·class="n">N</span>[·...·truncated·by·diffoscope;·len:·94,·SHA:·15372bab5959d8cfc1fa48c83e0fc45d6c3e9bc41ca5dfcd4e90ff26494ccc8a·...·]-2">)</span><span·class="p">,</span><span·class="w"> |
| 182 | ····</span><span·class="nf">loop</span><span·class="p"·data-group-id="3 | 182 | ····</span><span·class="nf">loop</span><span·class="p"·data-group-id="3893039648-4">(</span><span·class="n">N</span><span·class="o">+</span><span·class="mi">1</span><span·class="p"·data-group-id="3893039648-4">)</span><span·class="p">.</span></code></pre><p>The·earlier·factorial·example·is·a·counter-example.·It·is·not |
| 183 | tail-recursive,·since·a·multiplication·is·done·on·the·result·of·the·recursive | 183 | tail-recursive,·since·a·multiplication·is·done·on·the·result·of·the·recursive |
| 184 | call·to·<code·class="inline">fact(N-1)</code>.</p><h2·id="built-in-functions-bifs"·class="section-heading"> | 184 | call·to·<code·class="inline">fact(N-1)</code>.</p><h2·id="built-in-functions-bifs"·class="section-heading"> |
| 185 | ··<a·href="#built-in-functions-bifs"·class="hover-link"> | 185 | ··<a·href="#built-in-functions-bifs"·class="hover-link"> |
| 186 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 186 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 187 | ··</a> | 187 | ··</a> |
| 188 | ··<span·class="text">Built-In·Functions·(BIFs)</span> | 188 | ··<span·class="text">Built-In·Functions·(BIFs)</span> |
| 189 | </h2> | 189 | </h2> |
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| 191 | system.·BIFs·do·things·that·are·difficult·or·impossible·to·implement | 191 | system.·BIFs·do·things·that·are·difficult·or·impossible·to·implement |
| 192 | in·Erlang.·Most·of·the·BIFs·belong·to·module·<a·href="../../erts-15.2.3/doc/html/erlang.html"><code·class="inline">erlang</code></a>,·but·there | 192 | in·Erlang.·Most·of·the·BIFs·belong·to·module·<a·href="../../erts-15.2.3/doc/html/erlang.html"><code·class="inline">erlang</code></a>,·but·there |
| 193 | are·also·BIFs·belonging·to·a·few·other·modules,·for·example·<a·href="../../lib/stdlib-6.2.1/doc/html/lists.html"><code·class="inline">lists</code></a> | 193 | are·also·BIFs·belonging·to·a·few·other·modules,·for·example·<a·href="../../lib/stdlib-6.2.1/doc/html/lists.html"><code·class="inline">lists</code></a> |
| 194 | and·<a·href="../../lib/stdlib-6.2.1/doc/html/ets.html"><code·class="inline">ets</code></a>.</p><p>The·most·commonly·used·BIFs·belonging·to·<a·href="../../erts-15.2.3/doc/html/erlang.html"><code·class="inline">erlang</code></a>·are·<em>auto-imported</em>.·They·do | 194 | and·<a·href="../../lib/stdlib-6.2.1/doc/html/ets.html"><code·class="inline">ets</code></a>.</p><p>The·most·commonly·used·BIFs·belonging·to·<a·href="../../erts-15.2.3/doc/html/erlang.html"><code·class="inline">erlang</code></a>·are·<em>auto-imported</em>.·They·do |
| 195 | not·need·to·be·prefixed·with·the·module·name.·Which·BIFs·that·are·auto-imported | 195 | not·need·to·be·prefixed·with·the·module·name.·Which·BIFs·that·are·auto-imported |
| 196 | is·specified·in·the·<a·href="../../erts-15.2.3/doc/html/erlang.html"><code·class="inline">erlang</code></a>·module·in·ERTS.·For·example,·standard-type | 196 | is·specified·in·the·<a·href="../../erts-15.2.3/doc/html/erlang.html"><code·class="inline">erlang</code></a>·module·in·ERTS.·For·example,·standard-type |
| 197 | conversion·BIFs·like·<code·class="inline">atom_to_list</code>·and·BIFs·allowed·in·guards·can·be·called | 197 | conversion·BIFs·like·<code·class="inline">atom_to_list</code>·and·BIFs·allowed·in·guards·can·be·called |
| 198 | without·specifying·the·module·name.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nf">tuple_size</span><span·class="p"·data-group-id="75 | 198 | without·specifying·the·module·name.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nf">tuple_size</span><span·class="p"·data-group-id="7582245390-1">(</span><span·class="p"·data-group-id="7582245390-2">{</span><span·class="ss">a</span><span·class="p">,</span><span·class="ss">b</span><span·class="p">,</span><span·class="ss">c</span><span·class="p"·data-group-id="7582245390-2">}</span><span·c[·...·truncated·by·diffoscope;·len:·34,·SHA:·28e19beb87aee9b05a44d8357249218e13a45bcf6d21c2a3e4525dbc87ecefe1·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 199 | </span><span·class="mi">3</span><span·class="gp·unselectable"> | 199 | </span><span·class="mi">3</span><span·class="gp·unselectable"> |
| 200 | 2>·</span><span·class="nf">atom_to_list</span><span·class="p"·data-group-id="75 | 200 | 2>·</span><span·class="nf">atom_to_list</span><span·class="p"·data-group-id="7582245390-3">(</span><span·class="ss">'Erlang'</span><span·class="p"·data-group-id="7582245390-3">)</span><span·class="p">.</span><span·class="w"> |
| 201 | </span><span·class="s">"Erlang"</span></code></pre> | 201 | </span><span·class="s">"Erlang"</span></code></pre> |
| 202 | </div> | 202 | </div> |
| 203 | <div·class="bottom-actions"·id="bottom-actions"> | 203 | <div·class="bottom-actions"·id="bottom-actions"> |
| 204 | ··<div·class="bottom-actions-item"> | 204 | ··<div·class="bottom-actions-item"> |
| 205 | ······<a·href="documentation.html"·class="bottom-actions-button"·rel="prev"> | 205 | ······<a·href="documentation.html"·class="bottom-actions-button"·rel="prev"> |
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| 125 | (grow·and·shrink·dynamically)·with·small·memory·footprint,·fast·to·create·and | 125 | (grow·and·shrink·dynamically)·with·small·memory·footprint,·fast·to·create·and |
| 126 | terminate,·and·the·scheduling·overhead·is·low.</p><h2·id="process-creation"·class="section-heading"> | 126 | terminate,·and·the·scheduling·overhead·is·low.</p><h2·id="process-creation"·class="section-heading"> |
| 127 | ··<a·href="#process-creation"·class="hover-link"> | 127 | ··<a·href="#process-creation"·class="hover-link"> |
| 128 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 128 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 129 | ··</a> | 129 | ··</a> |
| 130 | ··<span·class="text">Process·Creation</span> | 130 | ··<span·class="text">Process·Creation</span> |
| 131 | </h2> | 131 | </h2> |
| 132 | <p>A·process·is·created·by·calling·<a·href="../../erts-15.2.3/doc/html/erlang.html#spawn/3"><code·class="inline">spawn()</code></a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">spawn</span><span·class="p"·data-group-id="8 | 132 | <p>A·process·is·created·by·calling·<a·href="../../erts-15.2.3/doc/html/erlang.html#spawn/3"><code·class="inline">spawn()</code></a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">spawn</span><span·class="p"·data-group-id="7870801365-1">(</span><span·class="n">Module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Args</span><span·class="p"·data-group-id="7870801365-1">)</span><s[·...·truncated·by·diffoscope;·len:·195,·SHA:·94a01959b2ca553f90d2e7d10ed5e17fd261f633bca4aca2a6c45512d2ee9dab·...·]-2">)</span><span·class="w"> |
| 133 | ··</span><span·class="n">Module</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="8 | 133 | ··</span><span·class="n">Module</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="7870801365-3">(</span><span·class="p"·data-group-id="7870801365-3">)</span><span·class="w"> |
| 134 | ··</span><span·class="n">Args</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="8 | 134 | ··</span><span·class="n">Args</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7870801365-4">[</span><span·class="n">Arg1</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">,</span><span·class="n">ArgN</span><span·class="p"·data-group-id="7870801365-4">]</span><span·class="w"> |
| 135 | ····</span><span·class="n">ArgI</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id="8 | 135 | ····</span><span·class="n">ArgI</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id="7870801365-5">(</span><span·class="p"·data-group-id="7870801365-5">)</span></code></pre><p><code·class="inline">spawn()</code>·creates·a·new·process·and·returns·the·pid.</p><p>The·new·process·starts·executing·in·<code·class="inline">Module:Name(Arg1,...,ArgN)</code>·where·the |
| 136 | arguments·are·the·elements·of·the·(possible·empty)·<code·class="inline">Args</code>·argument·list.</p><p>There·exist·a·number·of·different·<code·class="inline">spawn</code>·BIFs:</p><ul><li><a·href="../../erts-15.2.3/doc/html/erlang.html#spawn/4"><code·class="inline">spawn/1,2,3,4</code></a></li><li><a·href="../../erts-15.2.3/doc/html/erlang.html#spawn_link/4"><code·class="inline">spawn_link/1,2,3,4</code></a></li><li><a·href="../../erts-15.2.3/doc/html/erlang.html#spawn_monitor/4"><code·class="inline">spawn_monitor/1,2,3,4</code></a></li><li><a·href="../../erts-15.2.3/doc/html/erlang.html#spawn_opt/5"><code·class="inline">spawn_opt/2,3,4,5</code></a></li><li><a·href="../../erts-15.2.3/doc/html/erlang.html#spawn_request/5"><code·class="inline">spawn_request/1,2,3,4,5</code></a></li></ul><h2·id="registered-processes"·class="section-heading"> | 136 | arguments·are·the·elements·of·the·(possible·empty)·<code·class="inline">Args</code>·argument·list.</p><p>There·exist·a·number·of·different·<code·class="inline">spawn</code>·BIFs:</p><ul><li><a·href="../../erts-15.2.3/doc/html/erlang.html#spawn/4"><code·class="inline">spawn/1,2,3,4</code></a></li><li><a·href="../../erts-15.2.3/doc/html/erlang.html#spawn_link/4"><code·class="inline">spawn_link/1,2,3,4</code></a></li><li><a·href="../../erts-15.2.3/doc/html/erlang.html#spawn_monitor/4"><code·class="inline">spawn_monitor/1,2,3,4</code></a></li><li><a·href="../../erts-15.2.3/doc/html/erlang.html#spawn_opt/5"><code·class="inline">spawn_opt/2,3,4,5</code></a></li><li><a·href="../../erts-15.2.3/doc/html/erlang.html#spawn_request/5"><code·class="inline">spawn_request/1,2,3,4,5</code></a></li></ul><h2·id="registered-processes"·class="section-heading"> |
| 137 | ··<a·href="#registered-processes"·class="hover-link"> | 137 | ··<a·href="#registered-processes"·class="hover-link"> |
| 138 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 138 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 139 | ··</a> | 139 | ··</a> |
| 140 | ··<span·class="text">Registered·Processes</span> | 140 | ··<span·class="text">Registered·Processes</span> |
| 141 | </h2> | 141 | </h2> |
| 142 | <p>Besides·addressing·a·process·by·using·its·pid,·there·are·also·BIFs·for | 142 | <p>Besides·addressing·a·process·by·using·its·pid,·there·are·also·BIFs·for |
| Offset 123, 17 lines modified | Offset 123, 17 lines modified | ||
| 123 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 123 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 124 | ··</a> | 124 | ··</a> |
| 125 | ··<span·class="text">Defining·Records</span> | 125 | ··<span·class="text">Defining·Records</span> |
| 126 | </h2> | 126 | </h2> |
| 127 | <p>A·record·definition·consists·of·the·name·of·the·record,·followed·by·the·field | 127 | <p>A·record·definition·consists·of·the·name·of·the·record,·followed·by·the·field |
| 128 | names·of·the·record.·Record·and·field·names·must·be·atoms.·Each·field·can·be | 128 | names·of·the·record.·Record·and·field·names·must·be·atoms.·Each·field·can·be |
| 129 | given·an·optional·default·value.·If·no·default·value·is·supplied,·<code·class="inline">undefined</code>·is | 129 | given·an·optional·default·value.·If·no·default·value·is·supplied,·<code·class="inline">undefined</code>·is |
| 130 | used.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 130 | used.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="1216351136-1">(</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1216351136-2">{</span><span·class="n">Field1</span><span·class="w">·</span><span·class="p"·data-group-id="1216351136-3">[</span>[·...·truncated·by·diffoscope;·len:·117,·SHA:·31caa89f468e0328e8b9d79f6908b9105cef15d4f44b2f0f15f8145b477d4b46·...·]-3">]</span><span·class="p">,</span><span·class="w"> |
| 131 | ···············</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 131 | ···············</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 132 | ···············</span><span·class="n">FieldN</span><span·class="w">·</span><span·class="p"·data-group-id=" | 132 | ···············</span><span·class="n">FieldN</span><span·class="w">·</span><span·class="p"·data-group-id="1216351136-4">[</span><span·class="o">=</span><span·class="w">·</span><span·class="n">ExprN</span><span·class="p"·data-group-id="1216351136-4">]</span><span·class="p"·data-group-id="1216351136-2">}</span><span·class="p"·data-group-id="1216351136-1">)</span><span·class="p">.</span></code></pre><p>The·default·value·for·a·field·is·an·arbitrary·expression,·except·that·it·must |
| 133 | not·use·any·variables.</p><p>A·record·definition·can·be·placed·anywhere·among·the·attributes·and·function | 133 | not·use·any·variables.</p><p>A·record·definition·can·be·placed·anywhere·among·the·attributes·and·function |
| 134 | declarations·of·a·module,·but·the·definition·must·come·before·any·usage·of·the | 134 | declarations·of·a·module,·but·the·definition·must·come·before·any·usage·of·the |
| 135 | record.</p><p>If·a·record·is·used·in·several·modules,·it·is·recommended·that·the·record | 135 | record.</p><p>If·a·record·is·used·in·several·modules,·it·is·recommended·that·the·record |
| 136 | definition·is·placed·in·an·include·file.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Change</h4><p>Starting·from·Erlang/OTP·26,·records·can·be·defined·in·the·Erlang·shell | 136 | definition·is·placed·in·an·include·file.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Change</h4><p>Starting·from·Erlang/OTP·26,·records·can·be·defined·in·the·Erlang·shell |
| 137 | using·the·syntax·described·in·this·section.·In·earlier·releases,·it·was | 137 | using·the·syntax·described·in·this·section.·In·earlier·releases,·it·was |
| 138 | necessary·to·use·the·<a·href="../../lib/stdlib-6.2.1/doc/html/shell.html"><code·class="inline">shell</code></a>·built-in·function·<code·class="inline">rd/2</code>.</p></section><h2·id="creating-records"·class="section-heading"> | 138 | necessary·to·use·the·<a·href="../../lib/stdlib-6.2.1/doc/html/shell.html"><code·class="inline">shell</code></a>·built-in·function·<code·class="inline">rd/2</code>.</p></section><h2·id="creating-records"·class="section-heading"> |
| 139 | ··<a·href="#creating-records"·class="hover-link"> | 139 | ··<a·href="#creating-records"·class="hover-link"> |
| Offset 143, 32 lines modified | Offset 143, 32 lines modified | ||
| 143 | </h2> | 143 | </h2> |
| 144 | <p>The·following·expression·creates·a·new·<code·class="inline">Name</code>·record·where·the·value·of·each | 144 | <p>The·following·expression·creates·a·new·<code·class="inline">Name</code>·record·where·the·value·of·each |
| 145 | field·<code·class="inline">FieldI</code>·is·the·value·of·evaluating·the·corresponding·expression·<code·class="inline">ExprI</code>:</p><pre><code·class="text">#Name{Field1=Expr1,·...,·FieldK=ExprK}</code></pre><p>The·fields·can·be·in·any·order,·not·necessarily·the·same·order·as·in·the·record | 145 | field·<code·class="inline">FieldI</code>·is·the·value·of·evaluating·the·corresponding·expression·<code·class="inline">ExprI</code>:</p><pre><code·class="text">#Name{Field1=Expr1,·...,·FieldK=ExprK}</code></pre><p>The·fields·can·be·in·any·order,·not·necessarily·the·same·order·as·in·the·record |
| 146 | definition,·and·fields·can·be·omitted.·Omitted·fields·get·their·respective | 146 | definition,·and·fields·can·be·omitted.·Omitted·fields·get·their·respective |
| 147 | default·value·instead.</p><p>If·several·fields·are·to·be·assigned·the·same·value,·the·following·construction | 147 | default·value·instead.</p><p>If·several·fields·are·to·be·assigned·the·same·value,·the·following·construction |
| 148 | can·be·used:</p><pre><code·class="text">#Name{Field1=Expr1,·...,·FieldK=ExprK,·_=ExprL}</code></pre><p>Omitted·fields·then·get·the·value·of·evaluating·<code·class="inline">ExprL</code>·instead·of·their·default | 148 | can·be·used:</p><pre><code·class="text">#Name{Field1=Expr1,·...,·FieldK=ExprK,·_=ExprL}</code></pre><p>Omitted·fields·then·get·the·value·of·evaluating·<code·class="inline">ExprL</code>·instead·of·their·default |
| 149 | values.·This·feature·is·primarily·intended·to·be·used·to·create·patterns·for·ETS | 149 | values.·This·feature·is·primarily·intended·to·be·used·to·create·patterns·for·ETS |
| 150 | and·Mnesia·match·functions.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 150 | and·Mnesia·match·functions.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="0322598762-1">(</span><span·class="ss">person</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0322598762-2">{</span><span·class="ss">name</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">phone</spa[·...·truncated·by·diffoscope;·len:·175,·SHA:·0f2901ef02a291b1cc5d5e0ed56d779e88722b0bea5f60bf77b8086b8c4f183a·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 151 | </span><span·class="nf">lookup</span><span·class="p"·data-group-id=" | 151 | </span><span·class="nf">lookup</span><span·class="p"·data-group-id="0322598762-3">(</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tab</span><span·class="p"·data-group-id="0322598762-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 152 | ····</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">match_object</span><span·class="p"·data-group-id=" | 152 | ····</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">match_object</span><span·class="p"·data-group-id="0322598762-4">(</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id="0322598762-5">{</span><span·class="ss">name</span><span·class="o">=</span><[·...·truncated·by·diffoscope;·len:·251,·SHA:·4d69e2277c01f02b18ee0cb90e27dd92c391da46147edd3c6b2aa0127a3a7c28·...·]-4">)</span><span·class="p">.</span></code></pre><h2·id="accessing-record-fields"·class="section-heading"> |
| 153 | ··<a·href="#accessing-record-fields"·class="hover-link"> | 153 | ··<a·href="#accessing-record-fields"·class="hover-link"> |
| 154 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 154 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 155 | ··</a> | 155 | ··</a> |
| 156 | ··<span·class="text">Accessing·Record·Fields</span> | 156 | ··<span·class="text">Accessing·Record·Fields</span> |
| 157 | </h2> | 157 | </h2> |
| 158 | <pre><code·class="text">Expr#Name.Field</code></pre><p>Returns·the·value·of·the·specified·field.·<code·class="inline">Expr</code>·is·to·evaluate·to·a·<code·class="inline">Name</code> | 158 | <pre><code·class="text">Expr#Name.Field</code></pre><p>Returns·the·value·of·the·specified·field.·<code·class="inline">Expr</code>·is·to·evaluate·to·a·<code·class="inline">Name</code> |
| 159 | record.</p><p><em>Example</em>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="1 | 159 | record.</p><p><em>Example</em>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="1328579925-1">(</span><span·class="ss">person</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1328579925-2">{</span><span·class="ss">name</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">phone</span[·...·truncated·by·diffoscope;·len:·174,·SHA:·6f0d7cffb65c1af98aac065bfed26833fac77b74893340c617870684e89c01bf·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 160 | </span><span·class="nf">get_person_name</span><span·class="p"·data-group-id="1 | 160 | </span><span·class="nf">get_person_name</span><span·class="p"·data-group-id="1328579925-3">(</span><span·class="n">Person</span><span·class="p"·data-group-id="1328579925-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 161 | ····</span><span·class="n">Person</span><span·class="o">#</span><span·class="ss">person</span><span·class="p">.</span><span·class="ss">name</span><span·class="p">.</span></code></pre><p>The·following·expression·returns·the·position·of·the·specified·field·in·the | 161 | ····</span><span·class="n">Person</span><span·class="o">#</span><span·class="ss">person</span><span·class="p">.</span><span·class="ss">name</span><span·class="p">.</span></code></pre><p>The·following·expression·returns·the·position·of·the·specified·field·in·the |
| 162 | tuple·representation·of·the·record:</p><pre><code·class="text">#Name.Field</code></pre><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 162 | tuple·representation·of·the·record:</p><pre><code·class="text">#Name.Field</code></pre><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="9395131348-1">(</span><span·class="ss">person</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9395131348-2">{</span><span·class="ss">name</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">phone</spa[·...·truncated·by·diffoscope;·len:·173,·SHA:·b2a1b60bacec45c3d85d2c40c477df226078ea64e70fb3e183e203d828bfe124·...·]48-1">)</span><span·class="p">.</span><span·class="w"> |
| 163 | </span><span·class="nf">lookup</span><span·class="p"·data-group-id=" | 163 | </span><span·class="nf">lookup</span><span·class="p"·data-group-id="9395131348-3">(</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="n">List</span><span·class="p"·data-group-id="9395131348-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 164 | ····</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">keyfind</span><span·class="p"·data-group-id=" | 164 | ····</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">keyfind</span><span·class="p"·data-group-id="9395131348-4">(</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">person</span><span·class="p">.</span><span·class="ss">name</span><span·class="p">,</span><span·class="w">·</span><span[·...·truncated·by·diffoscope;·len:·61,·SHA:·281cee35ccafe85f77b19bfc7b602dfd2056da484e9a8d369bfb65a9bee9bbe6·...·]48-4">)</span><span·class="p">.</span></code></pre><h2·id="updating-records"·class="section-heading"> |
| 165 | ··<a·href="#updating-records"·class="hover-link"> | 165 | ··<a·href="#updating-records"·class="hover-link"> |
| 166 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 166 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 167 | ··</a> | 167 | ··</a> |
| 168 | ··<span·class="text">Updating·Records</span> | 168 | ··<span·class="text">Updating·Records</span> |
| 169 | </h2> | 169 | </h2> |
| 170 | <pre><code·class="text">Expr#Name{Field1=Expr1,·...,·FieldK=ExprK}</code></pre><p><code·class="inline">Expr</code>·is·to·evaluate·to·a·<code·class="inline">Name</code>·record.·A·copy·of·this·record·is·returned, | 170 | <pre><code·class="text">Expr#Name{Field1=Expr1,·...,·FieldK=ExprK}</code></pre><p><code·class="inline">Expr</code>·is·to·evaluate·to·a·<code·class="inline">Name</code>·record.·A·copy·of·this·record·is·returned, |
| 171 | with·the·value·of·each·specified·field·<code·class="inline">FieldI</code>·changed·to·the·value·of | 171 | with·the·value·of·each·specified·field·<code·class="inline">FieldI</code>·changed·to·the·value·of |
| Offset 178, 51 lines modified | Offset 178, 51 lines modified | ||
| 178 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 178 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 179 | ··</a> | 179 | ··</a> |
| 180 | ··<span·class="text">Records·in·Guards</span> | 180 | ··<span·class="text">Records·in·Guards</span> |
| 181 | </h2> | 181 | </h2> |
| 182 | <p>Since·record·expressions·are·expanded·to·tuple·expressions,·creating | 182 | <p>Since·record·expressions·are·expanded·to·tuple·expressions,·creating |
| 183 | records·and·accessing·record·fields·are·allowed·in·guards.·However, | 183 | records·and·accessing·record·fields·are·allowed·in·guards.·However, |
| 184 | all·subexpressions·(for·initializing·fields),·must·be·valid·guard | 184 | all·subexpressions·(for·initializing·fields),·must·be·valid·guard |
| 185 | expressions·as·well.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">handle</span><span·class="p"·data-group-id=" | 185 | expressions·as·well.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">handle</span><span·class="p"·data-group-id="0015525645-1">(</span><span·class="n">Msg</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="p"·data-group-id="0015525645-1">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><spa[·...·truncated·by·diffoscope;·len:·442,·SHA:·ee6d893017981c74e918c8054777b62d41189152db46a2773c8116840956348d·...·]-2">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 186 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 186 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 187 | </span><span·class="nf">handle</span><span·class="p"·data-group-id=" | 187 | </span><span·class="nf">handle</span><span·class="p"·data-group-id="0015525645-3">(</span><span·class="n">Msg</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="p"·data-group-id="0015525645-3">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="n">State</span><span·class="o">#</span><span·class="ss">state</span><span·class="p">.</span><span·class="ss">running</span><span·class="w">·</span><span·class="o">=:=</span><span·class="w">·</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 188 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>There·is·also·a·type·test·BIF·<a·href="../../erts-15.2.3/doc/html/erlang.html#is_record/2"><code·class="inline">is_record(Term,·RecordTag)</code></a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">is_person</span><span·class="p"·data-group-id=" | 188 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>There·is·also·a·type·test·BIF·<a·href="../../erts-15.2.3/doc/html/erlang.html#is_record/2"><code·class="inline">is_record(Term,·RecordTag)</code></a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">is_person</span><span·class="p"·data-group-id="5613900789-1">(</span><span·class="n">P</span><span·class="p"·data-group-id="5613900789-1">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_record</span><span·class="p"·data-group-id="5613900789-2">(</s[·...·truncated·by·diffoscope;·len:·146,·SHA:·07697de694f2fdea14670fbb27c12b88a25179fc2126a383d1cf7c0c8759019d·...·]9-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 189 | ····</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> | 189 | ····</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> |
| 190 | </span><span·class="nf">is_person</span><span·class="p"·data-group-id=" | 190 | </span><span·class="nf">is_person</span><span·class="p"·data-group-id="5613900789-3">(</span><span·class="p">_</span><span·class="n">P</span><span·class="p"·data-group-id="5613900789-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 191 | ····</span><span·class="ss">false</span><span·class="p">.</span></code></pre><h2·id="records-in-patterns"·class="section-heading"> | 191 | ····</span><span·class="ss">false</span><span·class="p">.</span></code></pre><h2·id="records-in-patterns"·class="section-heading"> |
| 192 | ··<a·href="#records-in-patterns"·class="hover-link"> | 192 | ··<a·href="#records-in-patterns"·class="hover-link"> |
| 193 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 193 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 194 | ··</a> | 194 | ··</a> |
| 195 | ··<span·class="text">Records·in·Patterns</span> | 195 | ··<span·class="text">Records·in·Patterns</span> |
| 196 | </h2> | 196 | </h2> |
| 197 | <p>A·pattern·that·matches·a·certain·record·is·created·in·the·same·way·as·a·record | 197 | <p>A·pattern·that·matches·a·certain·record·is·created·in·the·same·way·as·a·record |
| 198 | is·created:</p><pre><code·class="text">#Name{Field1=Expr1,·...,·FieldK=ExprK}</code></pre><p>In·this·case,·one·or·more·of·<code·class="inline">Expr1</code>·...·<code·class="inline">ExprK</code>·can·be·unbound·variables.</p><h2·id="nested-records"·class="section-heading"> | 198 | is·created:</p><pre><code·class="text">#Name{Field1=Expr1,·...,·FieldK=ExprK}</code></pre><p>In·this·case,·one·or·more·of·<code·class="inline">Expr1</code>·...·<code·class="inline">ExprK</code>·can·be·unbound·variables.</p><h2·id="nested-records"·class="section-heading"> |
| 199 | ··<a·href="#nested-records"·class="hover-link"> | 199 | ··<a·href="#nested-records"·class="hover-link"> |
| 200 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 200 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 201 | ··</a> | 201 | ··</a> |
| 202 | ··<span·class="text">Nested·Records</span> | 202 | ··<span·class="text">Nested·Records</span> |
| 203 | </h2> | 203 | </h2> |
| 204 | <p>Assume·the·following·record·definitions:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="2733387942-1">(</span><span·class="ss">nrec0</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2733387942-2">{</span><span·class="ss">name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"nested0"</span><span·class="p"·data-group-id="2733387942-2">}</span><span·class="p"·data-group-id="2733387942-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 205 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="2733387942-3">(</span><span·class="ss">nrec1</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2733387942-4">{</span><span·class="ss">name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"nested1"</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">nrec0</span><span·class="o">=</span><span·class="o">#</span><span·class="ss">nrec0</span><span·class="p"·data-group-id="2733387942-5">{</span><span·class="p"·data-group-id="2733387942-5">}</span><span·class="p"·data-group-id="2733387942-4">}</span><span·class="p"·data-group-id="2733387942-3">)</span><span·class="p">.</span><span·class="w"> | ||
| 206 | < | 204 | <p>Assume·the·following·record·definitions:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="3049951204-1">(</span><span·class="ss">nrec0</span><span·class="p">,</span><s[·...·truncated·by·diffoscope;·len:·313,·SHA:·86be37de1c4c10e776a5d5be365a029d6e101ce4bf0776eb06b68a510d043eca·...·]">)</span><span·class="p">.</span><span·class="w"> |
| 205 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="3049951204-3">(</span><span·class="ss">nrec1</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3049951204-4">{</span><span·class="ss">name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"nested1"</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">nrec0</span><span·class="o">=</span><span·class="o">#</span><span·class="ss">nrec0</span><span·class="p"·data-group-id="3049951204-5">{</span><span·class="p"·data-group-id="3049951204-5">}</span><span·class="p"·data-group-id="3049951204-4">}</span><span·class="p"·data-group-id="3049951204-3">)</span><span·class="p">.</span><span·class="w"> | ||
| 206 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="3049951204-6">(</span><span·class="ss">nrec2</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3049951204-7">{</span><span·class="ss">name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"nested2"</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">nrec1</span><span·class="o">=</span><span·class="o">#</span><span·class="ss">nrec1</span><span·class="p"·data-group-id="3049951204-8">{</span><span·class="p"·data-group-id="3049951204-8">}</span><span·class="p"·data-group-id="3049951204-7">}</span><span·class="p"·data-group-id="3049951204-6">)</span><span·class="p">.</span><span·class="w"> | ||
| 207 | </span><span·class="n">N2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">nrec2</span><span·class="p"·data-group-id=" | 207 | </span><span·class="n">N2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">nrec2</span><span·class="p"·data-group-id="3049951204-9">{</span><span·class="p"·data-group-id="3049951204-9">}</span><span·class="p">,</span></code></pre><p>Accessing·or·updating·nested·records·can·be·written·without·parentheses:</p><pre><code·class="text">"nested0"·=·N2#nrec2.nrec1#nrec1.nrec0#nrec0.name, |
| 208 | ····N0n·=·N2#nrec2.nrec1#nrec1.nrec0#nrec0{name·=·"nested0a"},</code></pre><p>which·is·equivalent·to:</p><pre><code·class="text">"nested0"·=·((N2#nrec2.nrec1)#nrec1.nrec0)#nrec0.name, | 208 | ····N0n·=·N2#nrec2.nrec1#nrec1.nrec0#nrec0{name·=·"nested0a"},</code></pre><p>which·is·equivalent·to:</p><pre><code·class="text">"nested0"·=·((N2#nrec2.nrec1)#nrec1.nrec0)#nrec0.name, |
| 209 | N0n·=·((N2#nrec2.nrec1)#nrec1.nrec0)#nrec0{name·=·"nested0a"},</code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Change</h4><p>Before·Erlang/OTP·R14,·parentheses·were·necessary·when·accessing·or·updating | 209 | N0n·=·((N2#nrec2.nrec1)#nrec1.nrec0)#nrec0{name·=·"nested0a"},</code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Change</h4><p>Before·Erlang/OTP·R14,·parentheses·were·necessary·when·accessing·or·updating |
| 210 | nested·records.</p></section><h2·id="internal-representation-of-records"·class="section-heading"> | 210 | nested·records.</p></section><h2·id="internal-representation-of-records"·class="section-heading"> |
| 211 | ··<a·href="#internal-representation-of-records"·class="hover-link"> | 211 | ··<a·href="#internal-representation-of-records"·class="hover-link"> |
| 212 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 212 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 213 | ··</a> | 213 | ··</a> |
| 214 | ··<span·class="text">Internal·Representation·of·Records</span> | 214 | ··<span·class="text">Internal·Representation·of·Records</span> |
| 215 | </h2> | 215 | </h2> |
| 216 | <p>Record·expressions·are·translated·to·tuple·expressions·during·compilation.·A | 216 | <p>Record·expressions·are·translated·to·tuple·expressions·during·compilation.·A |
| 217 | record·defined·as:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 217 | record·defined·as:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="5526343931-1">(</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5526343931-2">{</span><span·class="n">Field1</span><span·class="p">,</span><span·class="w">·</span><span·class="p">.</span><span[·...·truncated·by·diffoscope;·len:·214,·SHA:·cdfd0f3bd6e3d1c30e92302712cf3f7adf6cfda44c977acbe3f5c1c54b3bad0f·...·]-1">)</span><span·class="p">.</span></code></pre><p>is·internally·represented·by·the·tuple:</p><pre><code·class="text">{Name,·Value1,·...,·ValueN}</code></pre><p>Here·each·<code·class="inline">ValueI</code>·is·the·default·value·for·<code·class="inline">FieldI</code>.</p><p>To·each·module·using·records,·a·pseudo·function·is·added·during·compilation·to |
| 218 | obtain·information·about·records:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">record_info</span><span·class="p"·data-group-id=" | 218 | obtain·information·about·records:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">record_info</span><span·class="p"·data-group-id="4544318698-1">(</span><span·class="ss">fields</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Record</span><span·class="p"·data-group-id="4544318698-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</spa[·...·truncated·by·diffoscope;·len:·124,·SHA:·79751e79638559910ffea93b2e8e174c77a3c71a13070fb1d63b48f14eeb1481·...·]-2">]</span><span·class="w"> |
| 219 | </span><span·class="nf">record_info</span><span·class="p"·data-group-id=" | 219 | </span><span·class="nf">record_info</span><span·class="p"·data-group-id="4544318698-3">(</span><span·class="nb">size</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Record</span><span·class="p"·data-group-id="4544318698-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Size</span></code></pre><p><code·class="inline">Size</code>·is·the·size·of·the·tuple·representation,·that·is,·one·more·than·the |
| 220 | number·of·fields.</p> | 220 | number·of·fields.</p> |
| 221 | </div> | 221 | </div> |
| 222 | <div·class="bottom-actions"·id="bottom-actions"> | 222 | <div·class="bottom-actions"·id="bottom-actions"> |
| 223 | ··<div·class="bottom-actions-item"> | 223 | ··<div·class="bottom-actions-item"> |
| 224 | ······<a·href="macros.html"·class="bottom-actions-button"·rel="prev"> | 224 | ······<a·href="macros.html"·class="bottom-actions-button"·rel="prev"> |
| Offset 223, 38 lines modified | Offset 223, 38 lines modified | ||
| 223 | ··<span·class="text">update</span> | 223 | ··<span·class="text">update</span> |
| 224 | </h3> | 224 | </h3> |
| 225 | <p>If·a·more·complex·change·has·been·made,·for·example,·a·change·to·the·format·of | 225 | <p>If·a·more·complex·change·has·been·made,·for·example,·a·change·to·the·format·of |
| 226 | the·internal·state·of·a·<a·href="../../lib/stdlib-6.2.1/doc/html/gen_server.html"><code·class="inline">gen_server</code></a>,·simple·code·replacement·is·not·sufficient. | 226 | the·internal·state·of·a·<a·href="../../lib/stdlib-6.2.1/doc/html/gen_server.html"><code·class="inline">gen_server</code></a>,·simple·code·replacement·is·not·sufficient. |
| 227 | Instead,·it·is·necessary·to:</p><ul><li>Suspend·the·processes·using·the·module·(to·avoid·that·they·try·to·handle·any | 227 | Instead,·it·is·necessary·to:</p><ul><li>Suspend·the·processes·using·the·module·(to·avoid·that·they·try·to·handle·any |
| 228 | requests·before·the·code·replacement·is·completed).</li><li>Ask·them·to·transform·the·internal·state·format·and·switch·to·the·new·version | 228 | requests·before·the·code·replacement·is·completed).</li><li>Ask·them·to·transform·the·internal·state·format·and·switch·to·the·new·version |
| 229 | of·the·module.</li><li>Remove·the·old·version.</li><li>Resume·the·processes.</li></ul><p>This·is·called·<em>synchronized·code·replacement</em>·and·for·this·the·following | 229 | of·the·module.</li><li>Remove·the·old·version.</li><li>Resume·the·processes.</li></ul><p>This·is·called·<em>synchronized·code·replacement</em>·and·for·this·the·following |
| 230 | instructions·are·used:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="2060516343-1">{</span><span·class="ss">update</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Module</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2060516343-2">{</span><span·class="ss">advanced</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Extra</span><span·class="p"·data-group-id="2060516343-2">}</span><span·class="p"·data-group-id="2060516343-1">}</span><span·class="w"> | ||
| 231 | 230 | instructions·are·used:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="0766787845-1">{</span><span·class="ss">update</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Module</span><span·class="p">,</spa[·...·truncated·by·diffoscope;·len:·309,·SHA:·0f2bb8bf34e7d2bbab096e7e619caa9a96219e62348c63bd5dad4c8744c373eb·...·] | |
| 231 | </span><span·class="p"·data-group-id="0766787845-3">{</span><span·class="ss">update</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Module</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">supervisor</span><span·class="p"·data-group-id="0766787845-3">}</span></code></pre><p><code·class="inline">update</code>·with·argument·<code·class="inline">{advanced,Extra}</code>·is·used·when·changing·the·internal | ||
| 232 | state·of·a·behaviour·as·described·above.·It·causes·behaviour·processes·to·call | 232 | state·of·a·behaviour·as·described·above.·It·causes·behaviour·processes·to·call |
| 233 | the·callback·function·<code·class="inline">code_change/3</code>,·passing·the·term·<code·class="inline">Extra</code>·and·some·other | 233 | the·callback·function·<code·class="inline">code_change/3</code>,·passing·the·term·<code·class="inline">Extra</code>·and·some·other |
| 234 | information·as·arguments.·See·the·manual·pages·for·the·respective·behaviours·and | 234 | information·as·arguments.·See·the·manual·pages·for·the·respective·behaviours·and |
| 235 | <a·href="appup_cookbook.html#int_state">Appup·Cookbook</a>.</p><p><code·class="inline">update</code>·with·argument·<code·class="inline">supervisor</code>·is·used·when·changing·the·start | 235 | <a·href="appup_cookbook.html#int_state">Appup·Cookbook</a>.</p><p><code·class="inline">update</code>·with·argument·<code·class="inline">supervisor</code>·is·used·when·changing·the·start |
| 236 | specification·of·a·supervisor.·See·<a·href="appup_cookbook.html#sup">Appup·Cookbook</a>.</p><p>When·a·module·is·to·be·updated,·the·release·handler·finds·which·processes·that | 236 | specification·of·a·supervisor.·See·<a·href="appup_cookbook.html#sup">Appup·Cookbook</a>.</p><p>When·a·module·is·to·be·updated,·the·release·handler·finds·which·processes·that |
| 237 | are·<em>using</em>·the·module·by·traversing·the·supervision·tree·of·each·running | 237 | are·<em>using</em>·the·module·by·traversing·the·supervision·tree·of·each·running |
| 238 | application·and·checking·all·the·child·specifications:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 238 | application·and·checking·all·the·child·specifications:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="9196869351-1">{</span><span·class="n">Id</span><span·class="p">,</span><span·class="w">·</span><span·class="n">StartFunc</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Restart</span><span·class="p">,</span><span·class="w">·</span><sp[·...·truncated·by·diffoscope;·len:·222,·SHA:·0767548570077d311349fadd0b90c1144ab065b52608811336903d55f0bb10f8·...·]-1">}</span></code></pre><p>A·process·uses·a·module·if·the·name·is·listed·in·<code·class="inline">Modules</code>·in·the·child |
| 239 | specification·for·the·process.</p><p>If·<code·class="inline">Modules=dynamic</code>,·which·is·the·case·for·event·managers,·the·event·manager | 239 | specification·for·the·process.</p><p>If·<code·class="inline">Modules=dynamic</code>,·which·is·the·case·for·event·managers,·the·event·manager |
| 240 | process·informs·the·release·handler·about·the·list·of·currently·installed·event | 240 | process·informs·the·release·handler·about·the·list·of·currently·installed·event |
| 241 | handlers·(<code·class="inline">gen_event</code>),·and·it·is·checked·if·the·module·name·is·in·this·list | 241 | handlers·(<code·class="inline">gen_event</code>),·and·it·is·checked·if·the·module·name·is·in·this·list |
| 242 | instead.</p><p>The·release·handler·suspends,·asks·for·code·change,·and·resumes·processes·by | 242 | instead.</p><p>The·release·handler·suspends,·asks·for·code·change,·and·resumes·processes·by |
| 243 | calling·the·functions·<code·class="inline">sys:suspend/1,2</code>,·<code·class="inline">sys:change_code/4,5</code>,·and | 243 | calling·the·functions·<code·class="inline">sys:suspend/1,2</code>,·<code·class="inline">sys:change_code/4,5</code>,·and |
| 244 | <code·class="inline">sys:resume/1,2</code>,·respectively.</p><h3·id="add_module-and-delete_module"·class="section-heading"> | 244 | <code·class="inline">sys:resume/1,2</code>,·respectively.</p><h3·id="add_module-and-delete_module"·class="section-heading"> |
| 245 | ··<a·href="#add_module-and-delete_module"·class="hover-link"> | 245 | ··<a·href="#add_module-and-delete_module"·class="hover-link"> |
| 246 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 246 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 247 | ··</a> | 247 | ··</a> |
| 248 | ··<span·class="text">add_module·and·delete_module</span> | 248 | ··<span·class="text">add_module·and·delete_module</span> |
| 249 | </h3> | 249 | </h3> |
| 250 | <p>If·a·new·module·is·introduced,·the·following·instruction·is·used:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 250 | <p>If·a·new·module·is·introduced,·the·following·instruction·is·used:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="9914454575-1">{</span><span·class="ss">add_module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Module</span><span·class="p"·data-group-id="9914454575-1">}</span></code></pre><p>This·instruction·loads·module·<code·class="inline">Module</code>.·When·running·Erlang·in |
| 251 | embedded·mode·it·is·necessary·to·use·this·this·instruction.·It·is·not | 251 | embedded·mode·it·is·necessary·to·use·this·this·instruction.·It·is·not |
| 252 | strictly·required·when·running·Erlang·in·interactive·mode,·since·the | 252 | strictly·required·when·running·Erlang·in·interactive·mode,·since·the |
| 253 | code·server·automatically·searches·for·and·loads·unloaded·modules.</p><p>The·opposite·of·<code·class="inline">add_module</code>·is·<code·class="inline">delete_module</code>,·which·unloads·a·module:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 253 | code·server·automatically·searches·for·and·loads·unloaded·modules.</p><p>The·opposite·of·<code·class="inline">add_module</code>·is·<code·class="inline">delete_module</code>,·which·unloads·a·module:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="3999998699-1">{</span><span·class="nb">delete_module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Module</span><span·class="p"·data-group-id="3999998699-1">}</span></code></pre><p>Any·process,·in·any·application,·with·<code·class="inline">Module</code>·as·residence·module,·is |
| 254 | killed·when·the·instruction·is·evaluated.·Therefore,·the·user·must | 254 | killed·when·the·instruction·is·evaluated.·Therefore,·the·user·must |
| 255 | ensure·that·all·such·processes·are·terminated·before·deleting·module | 255 | ensure·that·all·such·processes·are·terminated·before·deleting·module |
| 256 | <code·class="inline">Module</code>·to·avoid·a·situation·with·failing·supervisor·restarts.</p><h3·id="application-instructions"·class="section-heading"> | 256 | <code·class="inline">Module</code>·to·avoid·a·situation·with·failing·supervisor·restarts.</p><h3·id="application-instructions"·class="section-heading"> |
| 257 | ··<a·href="#application-instructions"·class="hover-link"> | 257 | ··<a·href="#application-instructions"·class="hover-link"> |
| 258 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 258 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 259 | ··</a> | 259 | ··</a> |
| 260 | ··<span·class="text">Application·Instructions</span> | 260 | ··<span·class="text">Application·Instructions</span> |
| Offset 341, 60 lines modified | Offset 341, 60 lines modified | ||
| 341 | <code·class="inline">.app</code>·file.</li><li>Each·<code·class="inline">UpFromVsn</code>·is·a·previous·version·of·the·application·to·upgrade·from.</li><li>Each·<code·class="inline">DownToVsn</code>·is·a·previous·version·of·the·application·to·downgrade·to.</li><li>Each·<code·class="inline">Instructions</code>·is·a·list·of·release·handling·instructions.</li></ul><p><code·class="inline">UpFromVsn</code>·and·<code·class="inline">DownToVsn</code>·can·also·be·specified·as·regular·expressions.·For | 341 | <code·class="inline">.app</code>·file.</li><li>Each·<code·class="inline">UpFromVsn</code>·is·a·previous·version·of·the·application·to·upgrade·from.</li><li>Each·<code·class="inline">DownToVsn</code>·is·a·previous·version·of·the·application·to·downgrade·to.</li><li>Each·<code·class="inline">Instructions</code>·is·a·list·of·release·handling·instructions.</li></ul><p><code·class="inline">UpFromVsn</code>·and·<code·class="inline">DownToVsn</code>·can·also·be·specified·as·regular·expressions.·For |
| 342 | more·information·about·the·syntax·and·contents·of·the·<code·class="inline">.appup</code>·file,·see | 342 | more·information·about·the·syntax·and·contents·of·the·<code·class="inline">.appup</code>·file,·see |
| 343 | <a·href="../../lib/sasl-4.2.2/doc/html/appup.html"><code·class="inline">appup</code></a>·in·SASL.</p><p><a·href="appup_cookbook.html">Appup·Cookbook</a>·includes·examples·of·<code·class="inline">.appup</code>·files·for | 343 | <a·href="../../lib/sasl-4.2.2/doc/html/appup.html"><code·class="inline">appup</code></a>·in·SASL.</p><p><a·href="appup_cookbook.html">Appup·Cookbook</a>·includes·examples·of·<code·class="inline">.appup</code>·files·for |
| 344 | typical·upgrade/downgrade·cases.</p><p><em>Example:</em>·Consider·the·release·<code·class="inline">ch_rel-1</code>·from | 344 | typical·upgrade/downgrade·cases.</p><p><em>Example:</em>·Consider·the·release·<code·class="inline">ch_rel-1</code>·from |
| 345 | <a·href="release_structure.html#ch_rel">Releases</a>.·Assume·you·want·to·add·a·function | 345 | <a·href="release_structure.html#ch_rel">Releases</a>.·Assume·you·want·to·add·a·function |
| 346 | <code·class="inline">available/0</code>·to·server·<code·class="inline">ch3</code>,·which·returns·the·number·of·available·channels | 346 | <code·class="inline">available/0</code>·to·server·<code·class="inline">ch3</code>,·which·returns·the·number·of·available·channels |
| 347 | (when·trying·out·the·example,·make·the·change·in·a·copy·of·the·original | 347 | (when·trying·out·the·example,·make·the·change·in·a·copy·of·the·original |
| 348 | directory,·to·ensure·that·the·first·version·is·still·available):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 348 | directory,·to·ensure·that·the·first·version·is·still·available):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="3368157760-1">(</span><span·class="ss">ch3</span><span·class="p"·data-group-id="3368157760-1">)</span><span·class="p">.</span><span·class="w"> |
| 349 | </span><span·class="p">-</span><span·class="na">behaviour</span><span·class="p"·data-group-id=" | 349 | </span><span·class="p">-</span><span·class="na">behaviour</span><span·class="p"·data-group-id="3368157760-2">(</span><span·class="ss">gen_server</span><span·class="p"·data-group-id="3368157760-2">)</span><span·class="p">.</span><span·class="w"> |
| 350 | </span><span·class="w"> | 350 | </span><span·class="w"> |
| 351 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 351 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="3368157760-3">(</span><span·class="p"·data-group-id="3368157760-4">[</span><span·class="ss">start_link</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data-group-id="3368157760-4">]</span><span·class="p"·data-group-id="3368157760-3">)</span><span·class="p">.</span><span·class="w"> |
| 352 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 352 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="3368157760-5">(</span><span·class="p"·data-group-id="3368157760-6">[</span><span·class="ss">alloc</span><span·class="p">/</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">free</span><span·class="p">/</span><sp[·...·truncated·by·diffoscope;·len:·116,·SHA:·6e67b124538f7bbc9d638a50c27924f8f070d9f85cd5e121563ea1d492372910·...·]-5">)</span><span·class="p">.</span><span·class="w"> |
| 353 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 353 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="3368157760-7">(</span><span·class="p"·data-group-id="3368157760-8">[</span><span·class="ss">available</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data-group-id="3368157760-8">]</span><span·class="p"·data-group-id="3368157760-7">)</span><span·class="p">.</span><span·class="w"> |
| 354 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 354 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="3368157760-9">(</span><span·class="p"·data-group-id="3368157760-10">[</span><span·class="ss">init</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">handle_call</span><span·class="p">/</s[·...·truncated·by·diffoscope;·len:·256,·SHA:·e88dc47f1b528525d20f8a14fecd624eb87db7b0bc8688b7fc92b48884c9377a·...·]-9">)</span><span·class="p">.</span><span·class="w"> |
| 355 | </span><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 355 | </span><span·class="nf">start_link</span><span·class="p"·data-group-id="3368157760-11">(</span><span·class="p"·data-group-id="3368157760-11">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 356 | ····</span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 356 | ····</span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id="3368157760-12">(</span><span·class="p"·data-group-id="3368157760-13">{</span><span·class="ss">local</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ch3</span><span·class="p"·data-group-id="3368157760-13">}</span><span·class="p">,</sp[·...·truncated·by·diffoscope;·len:·407,·SHA:·f4b1e40d52bfbc151e320d056095b196b69986fc39dabc1bd8ea2945028ed22b·...·]-12">)</span><span·class="p">.</span><span·class="w"> |
| 357 | </span><span·class="nf">alloc</span><span·class="p"·data-group-id=" | 357 | </span><span·class="nf">alloc</span><span·class="p"·data-group-id="3368157760-16">(</span><span·class="p"·data-group-id="3368157760-16">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 358 | ····</span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id=" | 358 | ····</span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id="3368157760-17">(</span><span·class="ss">ch3</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">alloc</span><span·class="p"·data-group-id="3368157760-17">)</span><span·class="p">.</span><span·class="w"> |
| 359 | </span><span·class="nf">free</span><span·class="p"·data-group-id=" | 359 | </span><span·class="nf">free</span><span·class="p"·data-group-id="3368157760-18">(</span><span·class="n">Ch</span><span·class="p"·data-group-id="3368157760-18">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 360 | ····</span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="nf">cast</span><span·class="p"·data-group-id=" | 360 | ····</span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="nf">cast</span><span·class="p"·data-group-id="3368157760-19">(</span><span·class="ss">ch3</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3368157760-20">{</span><span·class="ss">free</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ch</span><sp[·...·truncated·by·diffoscope;·len:·92,·SHA:·ac38e1138d08293b2b449fb0074fc16d48f52499fd06a8957aab44fb36886185·...·]-19">)</span><span·class="p">.</span><span·class="w"> |
| 361 | </span><span·class="nf">available</span><span·class="p"·data-group-id=" | 361 | </span><span·class="nf">available</span><span·class="p"·data-group-id="3368157760-21">(</span><span·class="p"·data-group-id="3368157760-21">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 362 | ····</span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id=" | 362 | ····</span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id="3368157760-22">(</span><span·class="ss">ch3</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">available</span><span·class="p"·data-group-id="3368157760-22">)</span><span·class="p">.</span><span·class="w"> |
| 363 | </span><span·class="nf">init</span><span·class="p"·data-group-id=" | 363 | </span><span·class="nf">init</span><span·class="p"·data-group-id="3368157760-23">(</span><span·class="p">_</span><span·class="n">Args</span><span·class="p"·data-group-id="3368157760-23">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 364 | ····</span><span·class="p"·data-group-id=" | 364 | ····</span><span·class="p"·data-group-id="3368157760-24">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">channels</span><span·class="p"·data-group-id="3368157760-25">(</span><span·class="p"·data-group-id="3368157760-25">)</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·22,·SHA:·832c13115ac72cb29bf6551db4f99766caf47c7b9640c4966feff510b8df136e·...·]-24">}</span><span·class="p">.</span><span·class="w"> |
| 365 | </span><span·class="nf">handle_call</span><span·class="p"·data-group-id=" | 365 | </span><span·class="nf">handle_call</span><span·class="p"·data-group-id="3368157760-26">(</span><span·class="ss">alloc</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">From</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Chs</span><span·class="p"·data-group-id="[·...·truncated·by·diffoscope;·len:·10,·SHA:·686e4ee4feebbe10f391d517f59aa938ebb0a9e0de01d90d564a87c3ac5bbf37·...·]-26">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 366 | ····</span><span·class="p"·data-group-id=" | 366 | ····</span><span·class="p"·data-group-id="3368157760-27">{</span><span·class="n">Ch</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Chs2</span><span·class="p"·data-group-id="3368157760-27">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·c[·...·truncated·by·diffoscope;·len:·143,·SHA:·dff20c438eb5ae7044d38f40e28eda05e9965087158eba83dada371a02dd0c60·...·]-28">)</span><span·class="p">,</span><span·class="w"> |
| 367 | ····</span><span·class="p"·data-group-id=" | 367 | ····</span><span·class="p"·data-group-id="3368157760-29">{</span><span·class="ss">reply</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ch</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Chs2</span><span·class="p"·data-group-id="3368157760-29">}</span><span·class="p">;</span><span·class="w"> |
| 368 | </span><span·class="nf">handle_call</span><span·class="p"·data-group-id=" | 368 | </span><span·class="nf">handle_call</span><span·class="p"·data-group-id="3368157760-30">(</span><span·class="ss">available</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">From</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Chs</span><span·class="p"·data-group-[·...·truncated·by·diffoscope;·len:·14,·SHA:·c6d9e70902d6f575b3dbf33e256974f266bc2de9de3fced62d99cbab8327836f·...·]-30">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 369 | ····</span><span·class="n">N</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">available</span><span·class="p"·data-group-id=" | 369 | ····</span><span·class="n">N</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">available</span><span·class="p"·data-group-id="3368157760-31">(</span><span·class="n">Chs</span><span·class="p"·data-group-id="3368157760-31">)</span><span·class="p">,</span><span·class="w"> |
| 370 | ····</span><span·class="p"·data-group-id=" | 370 | ····</span><span·class="p"·data-group-id="3368157760-32">{</span><span·class="ss">reply</span><span·class="p">,</span><span·class="w">·</span><span·class="n">N</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Chs</span><span·class="p"·data-group-id="3368157760-32">}</span><span·class="p">.</span><span·class="w"> |
| 371 | </span><span·class="nf">handle_cast</span><span·class="p"·data-group-id=" | 371 | </span><span·class="nf">handle_cast</span><span·class="p"·data-group-id="3368157760-33">(</span><span·class="p"·data-group-id="3368157760-34">{</span><span·class="ss">free</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ch</span><span·class="p"·data-group-id="3368157760-34">}</span><span·class="p">,</span>[·...·truncated·by·diffoscope;·len:·91,·SHA:·a6222637651a3bc47d611a854eed02848cd492557d231a1e798dc83e3056068e·...·]-33">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 372 | ····</span><span·class="n">Chs2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">free</span><span·class="p"·data-group-id=" | 372 | ····</span><span·class="n">Chs2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">free</span><span·class="p"·data-group-id="3368157760-35">(</span><span·class="n">Ch</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Chs</span><span·class="p"·data-group-id="3368157760-35">)</span><span·class="p">,</span><span·class="w"> |
| 373 | ····</span><span·class="p"·data-group-id=" | 373 | ····</span><span·class="p"·data-group-id="3368157760-36">{</span><span·class="ss">noreply</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Chs2</span><span·class="p"·data-group-id="3368157760-36">}</span><span·class="p">.</span></code></pre><p>A·new·version·of·the·<code·class="inline">ch_app.app</code>·file·must·now·be·created,·where·the·version·is |
| 374 | updated:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 374 | updated:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="6313949778-1">{</span><span·class="ss">application</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ch_app</span><span·class="p">,</span><span·class="w"> |
| 375 | ·</span><span·class="p"·data-group-id=" | 375 | ·</span><span·class="p"·data-group-id="6313949778-2">[</span><span·class="p"·data-group-id="6313949778-3">{</span><span·class="ss">description</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"Channel·allocator"</span><span·class="p"·data-group-id="6313949778-3">}</span><span·class="p">,</span><span·class="w"> |
| 376 | ··</span><span·class="p"·data-group-id=" | 376 | ··</span><span·class="p"·data-group-id="6313949778-4">{</span><span·class="ss">vsn</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"2"</span><span·class="p"·data-group-id="6313949778-4">}</span><span·class="p">,</span><span·class="w"> |
| 377 | ··</span><span·class="p"·data-group-id=" | 377 | ··</span><span·class="p"·data-group-id="6313949778-5">{</span><span·class="ss">modules</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6313949778-6">[</span><span·class="ss">ch_app</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ch_sup<[·...·truncated·by·diffoscope;·len:·175,·SHA:·4259458e76bb4d9a4ed403f91547ba659811bf6dbf3f767e7ba63de056038763·...·]-5">}</span><span·class="p">,</span><span·class="w"> |
| 378 | ··</span><span·class="p"·data-group-id=" | 378 | ··</span><span·class="p"·data-group-id="6313949778-7">{</span><span·class="ss">registered</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6313949778-8">[</span><span·class="ss">ch3</span><span·class="p"·data-group-id="6313949778-8">]</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·22,·SHA:·8bc5f1d9f9f77e14528250efa2c6118f7aaaa519467842dc2a2abac79ecaf1f6·...·]-7">}</span><span·class="p">,</span><span·class="w"> |
| 379 | ··</span><span·class="p"·data-group-id=" | 379 | ··</span><span·class="p"·data-group-id="6313949778-9">{</span><span·class="ss">applications</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6313949778-10">[</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">s[·...·truncated·by·diffoscope;·len:·183,·SHA:·e2b518bcb7248051eda82ccb62f96e5b4217ea4b7cba0b956c81ce4c6f25f09b·...·]-9">}</span><span·class="p">,</span><span·class="w"> |
| 380 | ··</span><span·class="p"·data-group-id=" | 380 | ··</span><span·class="p"·data-group-id="6313949778-11">{</span><span·class="ss">mod</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6313949778-12">{</span><span·class="ss">ch_app</span><span·class="p">,</span><span·class="p"·data-group-id="6313949778-13">[</s[·...·truncated·by·diffoscope;·len:·153,·SHA:·d5f49e5ca00e4df41f3ba544a2854de3da7185ef38da98cef90c2eff1786bb48·...·]-11">}</span><span·class="w"> |
| 381 | ·</span><span·class="p"·data-group-id=" | 381 | ·</span><span·class="p"·data-group-id="6313949778-2">]</span><span·class="p"·data-group-id="6313949778-1">}</span><span·class="p">.</span></code></pre><p>To·upgrade·<code·class="inline">ch_app</code>·from·<code·class="inline">"1"</code>·to·<code·class="inline">"2"</code>·(and·to·downgrade·from·<code·class="inline">"2"</code>·to·<code·class="inline">"1"</code>), |
| 382 | you·only·need·to·load·the·new·(old)·version·of·the·<code·class="inline">ch3</code>·callback·module.·Create | 382 | you·only·need·to·load·the·new·(old)·version·of·the·<code·class="inline">ch3</code>·callback·module.·Create |
| 383 | the·application·upgrade·file·<code·class="inline">ch_app.appup</code>·in·the·<code·class="inline">ebin</code>·directory:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 383 | the·application·upgrade·file·<code·class="inline">ch_app.appup</code>·in·the·<code·class="inline">ebin</code>·directory:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8621021033-1">{</span><span·class="s">"2"</span><span·class="p">,</span><span·class="w"> |
| 384 | ·</span><span·class="p"·data-group-id=" | 384 | ·</span><span·class="p"·data-group-id="8621021033-2">[</span><span·class="p"·data-group-id="8621021033-3">{</span><span·class="s">"1"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8621021033-4">[</span><span·class="p"·data-group-id="8621021033-5"[·...·truncated·by·diffoscope;·len:·319,·SHA:·95d84eafa5a608faf97402f25e8c55767025299eefcfe0ad441816040be74610·...·]-2">]</span><span·class="p">,</span><span·class="w"> |
| 385 | ·</span><span·class="p"·data-group-id=" | 385 | ·</span><span·class="p"·data-group-id="8621021033-6">[</span><span·class="p"·data-group-id="8621021033-7">{</span><span·class="s">"1"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8621021033-8">[</span><span·class="p"·data-group-id="8621021033-9"[·...·truncated·by·diffoscope;·len:·319,·SHA:·c7703c949828491631ea61161e594876fd483cb4e44878d46145c98e335cac71·...·]-6">]</span><span·class="w"> |
| 386 | </span><span·class="p"·data-group-id=" | 386 | </span><span·class="p"·data-group-id="8621021033-1">}</span><span·class="p">.</span></code></pre><p><a·href=""·id="relup"></a></p><h2·id="release-upgrade-file"·class="section-heading"> |
| 387 | ··<a·href="#release-upgrade-file"·class="hover-link"> | 387 | ··<a·href="#release-upgrade-file"·class="hover-link"> |
| 388 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 388 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 389 | ··</a> | 389 | ··</a> |
| 390 | ··<span·class="text">Release·Upgrade·File</span> | 390 | ··<span·class="text">Release·Upgrade·File</span> |
| 391 | </h2> | 391 | </h2> |
| 392 | <p>To·define·how·to·upgrade/downgrade·between·the·new·version·and·previous·versions | 392 | <p>To·define·how·to·upgrade/downgrade·between·the·new·version·and·previous·versions |
| 393 | of·a·release,·a·<em>release·upgrade·file</em>,·or·in·short·<code·class="inline">.relup</code>·file,·is·to·be | 393 | of·a·release,·a·<em>release·upgrade·file</em>,·or·in·short·<code·class="inline">.relup</code>·file,·is·to·be |
| Offset 405, 22 lines modified | Offset 405, 22 lines modified | ||
| 405 | are·to·be·added·and·deleted,·and·which·applications·that·must·be·upgraded·and/or | 405 | are·to·be·added·and·deleted,·and·which·applications·that·must·be·upgraded·and/or |
| 406 | downgraded.·The·instructions·for·this·are·fetched·from·the·<code·class="inline">.appup</code>·files·and | 406 | downgraded.·The·instructions·for·this·are·fetched·from·the·<code·class="inline">.appup</code>·files·and |
| 407 | transformed·into·a·single·list·of·low-level·instructions·in·the·right·order.</p><p>If·the·<code·class="inline">relup</code>·file·is·relatively·simple,·it·can·be·created·manually.·It·is·only | 407 | transformed·into·a·single·list·of·low-level·instructions·in·the·right·order.</p><p>If·the·<code·class="inline">relup</code>·file·is·relatively·simple,·it·can·be·created·manually.·It·is·only |
| 408 | to·contain·low-level·instructions.</p><p>For·details·about·the·syntax·and·contents·of·the·release·upgrade·file,·see | 408 | to·contain·low-level·instructions.</p><p>For·details·about·the·syntax·and·contents·of·the·release·upgrade·file,·see |
| 409 | <a·href="../../lib/sasl-4.2.2/doc/html/relup.html"><code·class="inline">relup</code></a>·in·SASL.</p><p><em>Example,·continued·from·the·previous·section:</em>·You·have·a·new·version·"2"·of | 409 | <a·href="../../lib/sasl-4.2.2/doc/html/relup.html"><code·class="inline">relup</code></a>·in·SASL.</p><p><em>Example,·continued·from·the·previous·section:</em>·You·have·a·new·version·"2"·of |
| 410 | <code·class="inline">ch_app</code>·and·an·<code·class="inline">.appup</code>·file.·A·new·version·of·the·<code·class="inline">.rel</code>·file·is·also·needed. | 410 | <code·class="inline">ch_app</code>·and·an·<code·class="inline">.appup</code>·file.·A·new·version·of·the·<code·class="inline">.rel</code>·file·is·also·needed. |
| 411 | This·time·the·file·is·called·<code·class="inline">ch_rel-2.rel</code>·and·the·release·version·string·is | 411 | This·time·the·file·is·called·<code·class="inline">ch_rel-2.rel</code>·and·the·release·version·string·is |
| 412 | changed·from·"A"·to·"B":</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 412 | changed·from·"A"·to·"B":</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="4654350041-1">{</span><span·class="ss">release</span><span·class="p">,</span><span·class="w"> |
| 413 | ·</span><span·class="p"·data-group-id=" | 413 | ·</span><span·class="p"·data-group-id="4654350041-2">{</span><span·class="s">"ch_rel"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"B"</span><span·class="p"·data-group-id="4654350041-2">}</span><span·class="p">,</span><span·class="w"> |
| 414 | ·</span><span·class="p"·data-group-id=" | 414 | ·</span><span·class="p"·data-group-id="4654350041-3">{</span><span·class="ss">erts</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"14.2.5"</span><span·class="p"·data-group-id="4654350041-3">}</span><span·class="p">,</span><span·class="w"> |
| 415 | ·</span><span·class="p"·data-group-id=" | 415 | ·</span><span·class="p"·data-group-id="4654350041-4">[</span><span·class="p"·data-group-id="4654350041-5">{</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"9.2.4"</span><span·class="p"·data-group-id="4654350041-5">}</span><span·class="p">,</span><span·class="w"> |
| 416 | ··</span><span·class="p"·data-group-id=" | 416 | ··</span><span·class="p"·data-group-id="4654350041-6">{</span><span·class="ss">stdlib</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"5.2.3"</span><span·class="p"·data-group-id="4654350041-6">}</span><span·class="p">,</span><span·class="w"> |
| 417 | ··</span><span·class="p"·data-group-id=" | 417 | ··</span><span·class="p"·data-group-id="4654350041-7">{</span><span·class="ss">sasl</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"4.2.1"</span><span·class="p"·data-group-id="4654350041-7">}</span><span·class="p">,</span><span·class="w"> |
| 418 | ··</span><span·class="p"·data-group-id=" | 418 | ··</span><span·class="p"·data-group-id="4654350041-8">{</span><span·class="ss">ch_app</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"2"</span><span·class="p"·data-group-id="4654350041-8">}</span><span·class="p"·data-group-id="4654350041-4">]</span><span·class="w"> |
| 419 | </span><span·class="p"·data-group-id=" | 419 | </span><span·class="p"·data-group-id="4654350041-1">}</span><span·class="p">.</span></code></pre><p>Now·the·<code·class="inline">relup</code>·file·can·be·generated:</p><pre><code·class="text">1>·systools:make_relup("ch_rel-2",·["ch_rel-1"],·["ch_rel-1"]). |
| 420 | ok</code></pre><p>This·generates·a·<code·class="inline">relup</code>·file·with·instructions·for·how·to·upgrade·from·version | 420 | ok</code></pre><p>This·generates·a·<code·class="inline">relup</code>·file·with·instructions·for·how·to·upgrade·from·version |
| 421 | "A"·("ch_rel-1")·to·version·"B"·("ch_rel-2")·and·how·to·downgrade·from·version | 421 | "A"·("ch_rel-1")·to·version·"B"·("ch_rel-2")·and·how·to·downgrade·from·version |
| 422 | "B"·to·version·"A".</p><p>Both·the·old·and·new·versions·of·the·<code·class="inline">.app</code>·and·<code·class="inline">.rel</code>·files·must·be·in·the·code | 422 | "B"·to·version·"A".</p><p>Both·the·old·and·new·versions·of·the·<code·class="inline">.app</code>·and·<code·class="inline">.rel</code>·files·must·be·in·the·code |
| 423 | path,·as·well·as·the·<code·class="inline">.appup</code>·and·(new)·<code·class="inline">.beam</code>·files.·The·code·path·can·be | 423 | path,·as·well·as·the·<code·class="inline">.appup</code>·and·(new)·<code·class="inline">.beam</code>·files.·The·code·path·can·be |
| 424 | extended·by·using·the·option·<code·class="inline">path</code>:</p><pre><code·class="text">1>·systools:make_relup("ch_rel-2",·["ch_rel-1"],·["ch_rel-1"], | 424 | extended·by·using·the·option·<code·class="inline">path</code>:</p><pre><code·class="text">1>·systools:make_relup("ch_rel-2",·["ch_rel-1"],·["ch_rel-1"], |
| 425 | [{path,["../ch_rel-1", | 425 | [{path,["../ch_rel-1", |
| 426 | "../ch_rel-1/lib/ch_app-1/ebin"]}]). | 426 | "../ch_rel-1/lib/ch_app-1/ebin"]}]). |
| Offset 433, 25 lines modified | Offset 433, 25 lines modified | ||
| 433 | <p>When·you·have·made·a·new·version·of·a·release,·a·release·package·can·be·created | 433 | <p>When·you·have·made·a·new·version·of·a·release,·a·release·package·can·be·created |
| 434 | with·this·new·version·and·transferred·to·the·target·environment.</p><p>To·install·the·new·version·of·the·release·in·runtime,·the·<em>release | 434 | with·this·new·version·and·transferred·to·the·target·environment.</p><p>To·install·the·new·version·of·the·release·in·runtime,·the·<em>release |
| 435 | handler</em>·is·used.·This·is·a·process·belonging·to·the·SASL·application, | 435 | handler</em>·is·used.·This·is·a·process·belonging·to·the·SASL·application, |
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| 136 | ··<a·href="#release-resource-file"·class="hover-link"> | 136 | ··<a·href="#release-resource-file"·class="hover-link"> |
| 137 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 137 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 138 | ··</a> | 138 | ··</a> |
| 139 | ··<span·class="text">Release·Resource·File</span> | 139 | ··<span·class="text">Release·Resource·File</span> |
| 140 | </h2> | 140 | </h2> |
| 141 | <p>To·define·a·release,·create·a·<em>release·resource·file</em>,·or·in·short·a·<code·class="inline">.rel</code> | 141 | <p>To·define·a·release,·create·a·<em>release·resource·file</em>,·or·in·short·a·<code·class="inline">.rel</code> |
| 142 | file.·In·the·file,·specify·the·name·and·version·of·the·release,·which·ERTS | 142 | file.·In·the·file,·specify·the·name·and·version·of·the·release,·which·ERTS |
| 143 | version·it·is·based·on,·and·which·applications·it·consists·of:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 143 | version·it·is·based·on,·and·which·applications·it·consists·of:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="5452221746-1">{</span><span·class="ss">release</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5452221746-2">{</span><span·class="n">Name</span><span·class="p">,</span><span·class="n">Vsn</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·273,·SHA:·67324a7604daed366a4d4ba27c6133aab06e1674cdda73ff6decd62d0f652e72·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 144 | ·</span><span·class="p"·data-group-id=" | 144 | ·</span><span·class="p"·data-group-id="5452221746-4">[</span><span·class="p"·data-group-id="5452221746-5">{</span><span·class="n">Application1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">AppVsn1</span><span·class="p"·data-group-id="5452221746-5">}</span><span·class="p">,</span><span·class="w"> |
| 145 | ···</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 145 | ···</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 146 | ··</span><span·class="p"·data-group-id=" | 146 | ··</span><span·class="p"·data-group-id="5452221746-6">{</span><span·class="n">ApplicationN</span><span·class="p">,</span><span·class="w">·</span><span·class="n">AppVsnN</span><span·class="p"·data-group-id="5452221746-6">}</span><span·class="p"·data-group-id="5452221746-4">]</span><span·class="p"[·...·truncated·by·diffoscope;·len:·26,·SHA:·94eb7d8e3bb2d9f4fe72a34342c1949bb99cf3162d75213e66d3959158089162·...·]-1">}</span><span·class="p">.</span></code></pre><p><code·class="inline">Name</code>,·<code·class="inline">Vsn</code>,·<code·class="inline">EVsn</code>,·and·<code·class="inline">AppVsn</code>·are·strings.</p><p>The·file·must·be·named·<code·class="inline">Rel.rel</code>,·where·<code·class="inline">Rel</code>·is·a·unique·name.</p><p>Each·<code·class="inline">Application</code>·(atom)·and·<code·class="inline">AppVsn</code>·is·the·name·and·version·of·an·application |
| 147 | included·in·the·release.·The·minimal·release·based·on·Erlang/OTP·consists·of·the | 147 | included·in·the·release.·The·minimal·release·based·on·Erlang/OTP·consists·of·the |
| 148 | Kernel·and·STDLIB·applications,·so·these·applications·must·be·included·in·the | 148 | Kernel·and·STDLIB·applications,·so·these·applications·must·be·included·in·the |
| 149 | list.</p><p>If·the·release·is·to·be·upgraded,·it·must·also·include·the·SASL·application.</p><p><a·href=""·id="ch_rel"></a></p><p>Here·is·an·example·showing·the·<code·class="inline">.app</code>·file·for·a·release·of·<code·class="inline">ch_app</code>·from | 149 | list.</p><p>If·the·release·is·to·be·upgraded,·it·must·also·include·the·SASL·application.</p><p><a·href=""·id="ch_rel"></a></p><p>Here·is·an·example·showing·the·<code·class="inline">.app</code>·file·for·a·release·of·<code·class="inline">ch_app</code>·from |
| 150 | the·<a·href="applications.html#ch_app">Applications</a>·section:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 150 | the·<a·href="applications.html#ch_app">Applications</a>·section:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="0711136865-1">{</span><span·class="ss">application</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ch_app</span><span·class="p">,</span><span·class="w"> |
| 151 | ·</span><span·class="p"·data-group-id=" | 151 | ·</span><span·class="p"·data-group-id="0711136865-2">[</span><span·class="p"·data-group-id="0711136865-3">{</span><span·class="ss">description</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"Channel·allocator"</span><span·class="p"·data-group-id="0711136865-3">}</span><span·class="p">,</span><span·class="w"> |
| 152 | ··</span><span·class="p"·data-group-id=" | 152 | ··</span><span·class="p"·data-group-id="0711136865-4">{</span><span·class="ss">vsn</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"1"</span><span·class="p"·data-group-id="0711136865-4">}</span><span·class="p">,</span><span·class="w"> |
| 153 | ··</span><span·class="p"·data-group-id=" | 153 | ··</span><span·class="p"·data-group-id="0711136865-5">{</span><span·class="ss">modules</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0711136865-6">[</span><span·class="ss">ch_app</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ch_sup<[·...·truncated·by·diffoscope;·len:·175,·SHA:·ee29aaf67acf41cde48734ea11597f039d095d06010f27436515962e551e8a64·...·]-5">}</span><span·class="p">,</span><span·class="w"> |
| 154 | ··</span><span·class="p"·data-group-id=" | 154 | ··</span><span·class="p"·data-group-id="0711136865-7">{</span><span·class="ss">registered</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0711136865-8">[</span><span·class="ss">ch3</span><span·class="p"·data-group-id="0711136865-8">]</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·22,·SHA:·168215ea002061df4987da260e967eb3a93fb57c11049f3069ce33a3e9a6dcf6·...·]-7">}</span><span·class="p">,</span><span·class="w"> |
| 155 | ··</span><span·class="p"·data-group-id=" | 155 | ··</span><span·class="p"·data-group-id="0711136865-9">{</span><span·class="ss">applications</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0711136865-10">[</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">s[·...·truncated·by·diffoscope;·len:·183,·SHA:·7d548eaac76e4f041bb0d7e2c10f99ad3f24d76293d9e44bdbd65b0958b7adcf·...·]-9">}</span><span·class="p">,</span><span·class="w"> |
| 156 | ··</span><span·class="p"·data-group-id=" | 156 | ··</span><span·class="p"·data-group-id="0711136865-11">{</span><span·class="ss">mod</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0711136865-12">{</span><span·class="ss">ch_app</span><span·class="p">,</span><span·class="p"·data-group-id="0711136865-13">[</s[·...·truncated·by·diffoscope;·len:·153,·SHA:·b0001cd685ebafd84e7603f61c735d50762160d4913a2a09a1b6775774302dd3·...·]-11">}</span><span·class="w"> |
| 157 | ·</span><span·class="p"·data-group-id=" | 157 | ·</span><span·class="p"·data-group-id="0711136865-2">]</span><span·class="p"·data-group-id="0711136865-1">}</span><span·class="p">.</span></code></pre><p>The·<code·class="inline">.rel</code>·file·must·also·contain·<code·class="inline">kernel</code>,·<code·class="inline">stdlib</code>,·and·<code·class="inline">sasl</code>,·as·these |
| 158 | applications·are·required·by·<code·class="inline">ch_app</code>.·The·file·is·called·<code·class="inline">ch_rel-1.rel</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="4 | 158 | applications·are·required·by·<code·class="inline">ch_app</code>.·The·file·is·called·<code·class="inline">ch_rel-1.rel</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="4066352933-1">{</span><span·class="ss">release</span><span·class="p">,</span><span·class="w"> |
| 159 | ·</span><span·class="p"·data-group-id="4 | 159 | ·</span><span·class="p"·data-group-id="4066352933-2">{</span><span·class="s">"ch_rel"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"A"</span><span·class="p"·data-group-id="4066352933-2">}</span><span·class="p">,</span><span·class="w"> |
| 160 | ·</span><span·class="p"·data-group-id="4 | 160 | ·</span><span·class="p"·data-group-id="4066352933-3">{</span><span·class="ss">erts</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"14.2.5"</span><span·class="p"·data-group-id="4066352933-3">}</span><span·class="p">,</span><span·class="w"> |
| 161 | ·</span><span·class="p"·data-group-id="4 | 161 | ·</span><span·class="p"·data-group-id="4066352933-4">[</span><span·class="p"·data-group-id="4066352933-5">{</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"9.2.4"</span><span·class="p"·data-group-id="4066352933-5">}</span><span·class="p">,</span><span·class="w"> |
| 162 | ··</span><span·class="p"·data-group-id="4 | 162 | ··</span><span·class="p"·data-group-id="4066352933-6">{</span><span·class="ss">stdlib</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"5.2.3"</span><span·class="p"·data-group-id="4066352933-6">}</span><span·class="p">,</span><span·class="w"> |
| 163 | ··</span><span·class="p"·data-group-id="4 | 163 | ··</span><span·class="p"·data-group-id="4066352933-7">{</span><span·class="ss">sasl</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"4.2.1"</span><span·class="p"·data-group-id="4066352933-7">}</span><span·class="p">,</span><span·class="w"> |
| 164 | ··</span><span·class="p"·data-group-id="4 | 164 | ··</span><span·class="p"·data-group-id="4066352933-8">{</span><span·class="ss">ch_app</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"1"</span><span·class="p"·data-group-id="4066352933-8">}</span><span·class="p"·data-group-id="4066352933-4">]</span><span·class="w"> |
| 165 | </span><span·class="p"·data-group-id="4 | 165 | </span><span·class="p"·data-group-id="4066352933-1">}</span><span·class="p">.</span></code></pre><p><a·href=""·id="boot"></a></p><h2·id="generating-boot-scripts"·class="section-heading"> |
| 166 | ··<a·href="#generating-boot-scripts"·class="hover-link"> | 166 | ··<a·href="#generating-boot-scripts"·class="hover-link"> |
| 167 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 167 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 168 | ··</a> | 168 | ··</a> |
| 169 | ··<span·class="text">Generating·Boot·Scripts</span> | 169 | ··<span·class="text">Generating·Boot·Scripts</span> |
| 170 | </h2> | 170 | </h2> |
| 171 | <p><a·href="../../lib/sasl-4.2.2/doc/html/systools.html"><code·class="inline">systools</code></a>·in·the·SASL·application·includes·tools·to·build·and·check | 171 | <p><a·href="../../lib/sasl-4.2.2/doc/html/systools.html"><code·class="inline">systools</code></a>·in·the·SASL·application·includes·tools·to·build·and·check |
| 172 | releases.·The·functions·read·the·<code·class="inline">.rel</code>·and·<code·class="inline">.app</code>·files·and·perform | 172 | releases.·The·functions·read·the·<code·class="inline">.rel</code>·and·<code·class="inline">.app</code>·files·and·perform |
| Offset 190, 17 lines modified | Offset 190, 17 lines modified | ||
| 190 | ··<a·href="#creating-a-release-package"·class="hover-link"> | 190 | ··<a·href="#creating-a-release-package"·class="hover-link"> |
| 191 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 191 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 192 | ··</a> | 192 | ··</a> |
| 193 | ··<span·class="text">Creating·a·Release·Package</span> | 193 | ··<span·class="text">Creating·a·Release·Package</span> |
| 194 | </h2> | 194 | </h2> |
| 195 | <p>The·<a·href="../../lib/sasl-4.2.2/doc/html/systools.html#make_tar/2"><code·class="inline">systools:make_tar/1,2</code></a>·function·takes·a | 195 | <p>The·<a·href="../../lib/sasl-4.2.2/doc/html/systools.html#make_tar/2"><code·class="inline">systools:make_tar/1,2</code></a>·function·takes·a |
| 196 | <code·class="inline">.rel</code>·file·as·input·and·creates·a·zipped·tar·file·with·the·code·for | 196 | <code·class="inline">.rel</code>·file·as·input·and·creates·a·zipped·tar·file·with·the·code·for |
| 197 | the·specified·applications,·a·<em>release·package</em>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">systools</span><span·class="p">:</span><span·class="nf">make_script</span><span·class="p"·data-group-id=" | 197 | the·specified·applications,·a·<em>release·package</em>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">systools</span><span·class="p">:</span><span·class="nf">make_script</span><span·class="p"·data-group-id="5258784594-1">(</span><span·class="s">"ch_rel-1"</span><span·class="p"·data-group-id="5258784594-1">)</span><span·class="p">.</span><span·class="w"> |
| 198 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 198 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 199 | 2>·</span><span·class="nc">systools</span><span·class="p">:</span><span·class="nf">make_tar</span><span·class="p"·data-group-id=" | 199 | 2>·</span><span·class="nc">systools</span><span·class="p">:</span><span·class="nf">make_tar</span><span·class="p"·data-group-id="5258784594-2">(</span><span·class="s">"ch_rel-1"</span><span·class="p"·data-group-id="5258784594-2">)</span><span·class="p">.</span><span·class="w"> |
| 200 | </span><span·class="ss">ok</span></code></pre><p>The·release·package·by·default·contains:</p><ul><li>The·<code·class="inline">.app</code>·files</li><li>The·<code·class="inline">.rel</code>·file</li><li>The·object·code·for·all·applications,·structured·according·to·the | 200 | </span><span·class="ss">ok</span></code></pre><p>The·release·package·by·default·contains:</p><ul><li>The·<code·class="inline">.app</code>·files</li><li>The·<code·class="inline">.rel</code>·file</li><li>The·object·code·for·all·applications,·structured·according·to·the |
| 201 | <a·href="applications.html#app_dir">application·directory·structure</a></li><li>The·binary·boot·script·renamed·to·<code·class="inline">start.boot</code></li></ul><pre><code·class="text">%·tar·tf·ch_rel-1.tar | 201 | <a·href="applications.html#app_dir">application·directory·structure</a></li><li>The·binary·boot·script·renamed·to·<code·class="inline">start.boot</code></li></ul><pre><code·class="text">%·tar·tf·ch_rel-1.tar |
| 202 | lib/kernel-9.2.4/ebin/kernel.app | 202 | lib/kernel-9.2.4/ebin/kernel.app |
| 203 | lib/kernel-9.2.4/ebin/application.beam | 203 | lib/kernel-9.2.4/ebin/application.beam |
| 204 | ... | 204 | ... |
| 205 | lib/stdlib-5.2.3/ebin/stdlib.app | 205 | lib/stdlib-5.2.3/ebin/stdlib.app |
| 206 | lib/stdlib-5.2.3/ebin/argparse.beam | 206 | lib/stdlib-5.2.3/ebin/argparse.beam |
| Offset 128, 68 lines modified | Offset 128, 68 lines modified | ||
| 128 | </h2> | 128 | </h2> |
| 129 | <p>Before·improving·the·messenger·program,·let·us·look·at·some·general·principles, | 129 | <p>Before·improving·the·messenger·program,·let·us·look·at·some·general·principles, |
| 130 | using·the·ping·pong·program·as·an·example.·Recall·that·when·"ping"·finishes,·it | 130 | using·the·ping·pong·program·as·an·example.·Recall·that·when·"ping"·finishes,·it |
| 131 | tells·"pong"·that·it·has·done·so·by·sending·the·atom·<code·class="inline">finished</code>·as·a·message·to | 131 | tells·"pong"·that·it·has·done·so·by·sending·the·atom·<code·class="inline">finished</code>·as·a·message·to |
| 132 | "pong"·so·that·"pong"·can·also·finish.·Another·way·to·let·"pong"·finish·is·to | 132 | "pong"·so·that·"pong"·can·also·finish.·Another·way·to·let·"pong"·finish·is·to |
| 133 | make·"pong"·exit·if·it·does·not·receive·a·message·from·ping·within·a·certain | 133 | make·"pong"·exit·if·it·does·not·receive·a·message·from·ping·within·a·certain |
| 134 | time.·This·can·be·done·by·adding·a·<em>time-out</em>·to·<code·class="inline">pong</code>·as·shown·in·the | 134 | time.·This·can·be·done·by·adding·a·<em>time-out</em>·to·<code·class="inline">pong</code>·as·shown·in·the |
| 135 | following·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 135 | following·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="6349724608-1">(</span><span·class="ss">tut19</span><span·class="p"·data-group-id="6349724608-1">)</span><span·class="p">.</span><span·class="w"> |
| 136 | </span><span·class="w"> | 136 | </span><span·class="w"> |
| 137 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 137 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="6349724608-2">(</span><span·class="p"·data-group-id="6349724608-3">[</span><span·class="ss">start_ping</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">start_pong</span><span·class="p">[·...·truncated·by·diffoscope;·len:·378,·SHA:·4227bad24dd74a81a64393001960b7296a9720ff8f0268e0e919ad698115127f·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 138 | </span><span·class="nf">ping</span><span·class="p"·data-group-id=" | 138 | </span><span·class="nf">ping</span><span·class="p"·data-group-id="6349724608-4">(</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pong_Node</span><span·class="p"·data-group-id="6349724608-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 139 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 139 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="6349724608-5">(</span><span·class="s">"ping·finished</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6349724608-6">[</span><span·class="p"·data-group-id="63497[·...·truncated·by·diffoscope;·len:·58,·SHA:·965a293d897ac16a3d4ddba49c7f43b3a18ff0d113efdb3dd9281dd291b8946b·...·]-5">)</span><span·class="p">;</span><span·class="w"> |
| 140 | </span><span·class="nf">ping</span><span·class="p"·data-group-id=" | 140 | </span><span·class="nf">ping</span><span·class="p"·data-group-id="6349724608-7">(</span><span·class="n">N</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pong_Node</span><span·class="p"·data-group-id="6349724608-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 141 | ····</span><span·class="p"·data-group-id=" | 141 | ····</span><span·class="p"·data-group-id="6349724608-8">{</span><span·class="ss">pong</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pong_Node</span><span·class="p"·data-group-id="6349724608-8">}</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·305,·SHA:·0191d395a62c95512edab805c001f55d1ecdcdf26fcf9d6f47e6d6bea284649b·...·]-9">}</span><span·class="p">,</span><span·class="w"> |
| 142 | ····</span><span·class="k">receive</span><span·class="w"> | 142 | ····</span><span·class="k">receive</span><span·class="w"> |
| 143 | ········</span><span·class="ss">pong</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 143 | ········</span><span·class="ss">pong</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 144 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 144 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="6349724608-11">(</span><span·class="s">"Ping·received·pong</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6349724608-12">[</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·66,·SHA:·a9fb55d0864c6cb3247737e6fd282021b149662c6cbf95015434c6edda6d3311·...·]-11">)</span><span·class="w"> |
| 145 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 145 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 146 | ····</span><span·class="nf">ping</span><span·class="p"·data-group-id=" | 146 | ····</span><span·class="nf">ping</span><span·class="p"·data-group-id="6349724608-13">(</span><span·class="n">N</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pong_Node</span><span·class="p"·data-group-id="6[·...·truncated·by·diffoscope;·len:·9,·SHA:·e357aae835aea981fc992b4e9b5aab2089b998330369c7ee47a1b0855efc04a0·...·]-13">)</span><span·class="p">.</span><span·class="w"> |
| 147 | </span><span·class="nf">pong</span><span·class="p"·data-group-id=" | 147 | </span><span·class="nf">pong</span><span·class="p"·data-group-id="6349724608-14">(</span><span·class="p"·data-group-id="6349724608-14">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 148 | ····</span><span·class="k">receive</span><span·class="w"> | 148 | ····</span><span·class="k">receive</span><span·class="w"> |
| 149 | ········</span><span·class="p"·data-group-id=" | 149 | ········</span><span·class="p"·data-group-id="6349724608-15">{</span><span·class="ss">ping</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ping_PID</span><span·class="p"·data-group-id="6349724608-15">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 150 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 150 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="6349724608-16">(</span><span·class="s">"Pong·received·ping</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6349724608-17">[</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·66,·SHA:·6cd61e5cedf6331eeaffe4c20cd74069b30568b0f7561ee07710d587f8f0090b·...·]-16">)</span><span·class="p">,</span><span·class="w"> |
| 151 | ············</span><span·class="n">Ping_PID</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="ss">pong</span><span·class="p">,</span><span·class="w"> | 151 | ············</span><span·class="n">Ping_PID</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="ss">pong</span><span·class="p">,</span><span·class="w"> |
| 152 | ············</span><span·class="nf">pong</span><span·class="p"·data-group-id=" | 152 | ············</span><span·class="nf">pong</span><span·class="p"·data-group-id="6349724608-18">(</span><span·class="p"·data-group-id="6349724608-18">)</span><span·class="w"> |
| 153 | ····</span><span·class="k">after</span><span·class="w">·</span><span·class="mi">5000</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 153 | ····</span><span·class="k">after</span><span·class="w">·</span><span·class="mi">5000</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 154 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 154 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="6349724608-19">(</span><span·class="s">"Pong·timed·out</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6349724608-20">[</span><span·class="p"·data-group-id="63[·...·truncated·by·diffoscope;·len:·62,·SHA:·9c6c88a443657e84f41135a6808694f9a9e7c18b9b1d4c6c944bde338507ffc0·...·]-19">)</span><span·class="w"> |
| 155 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 155 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 156 | </span><span·class="nf">start_pong</span><span·class="p"·data-group-id=" | 156 | </span><span·class="nf">start_pong</span><span·class="p"·data-group-id="6349724608-21">(</span><span·class="p"·data-group-id="6349724608-21">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 157 | ····</span><span·class="nf">register</span><span·class="p"·data-group-id=" | 157 | ····</span><span·class="nf">register</span><span·class="p"·data-group-id="6349724608-22">(</span><span·class="ss">pong</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">spawn</span><span·class="p"·data-group-id="6349724608-23">(</span><span·class="ss">tut19</span><span·class="p">,</span><span·class="w">·</sp[·...·truncated·by·diffoscope;·len:·282,·SHA:·907498d7e87b437263bff25e0400d17db6ba6881c2c5e1caea5ad0c787778eac·...·]-22">)</span><span·class="p">.</span><span·class="w"> |
| 158 | </span><span·class="nf">start_ping</span><span·class="p"·data-group-id=" | 158 | </span><span·class="nf">start_ping</span><span·class="p"·data-group-id="6349724608-25">(</span><span·class="n">Pong_Node</span><span·class="p"·data-group-id="6349724608-25">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 159 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id=" | 159 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id="6349724608-26">(</span><span·class="ss">tut19</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ping</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6349724608-27">[</span><span·class="mi">3</span><[·...·truncated·by·diffoscope;·len:·174,·SHA:·127eaf3e5b360f8db6592325a7690a641515670cebc6b55210101a8da9445d65·...·]-26">)</span><span·class="p">.</span></code></pre><p>After·this·is·compiled·and·the·file·<code·class="inline">tut19.beam</code>·is·copied·to·the·necessary |
| 160 | directories,·the·following·is·seen·on·(pong@kosken):</p><pre><code·class="text">(pong@kosken)1>·tut19:start_pong(). | 160 | directories,·the·following·is·seen·on·(pong@kosken):</p><pre><code·class="text">(pong@kosken)1>·tut19:start_pong(). |
| 161 | true | 161 | true |
| 162 | Pong·received·ping | 162 | Pong·received·ping |
| 163 | Pong·received·ping | 163 | Pong·received·ping |
| 164 | Pong·received·ping | 164 | Pong·received·ping |
| 165 | Pong·timed·out</code></pre><p>And·the·following·is·seen·on·(ping@gollum):</p><pre><code·class="text">(ping@gollum)1>·tut19:start_ping(pong@kosken). | 165 | Pong·timed·out</code></pre><p>And·the·following·is·seen·on·(ping@gollum):</p><pre><code·class="text">(ping@gollum)1>·tut19:start_ping(pong@kosken). |
| 166 | <0.36.0> | 166 | <0.36.0> |
| 167 | Ping·received·pong | 167 | Ping·received·pong |
| 168 | Ping·received·pong | 168 | Ping·received·pong |
| 169 | Ping·received·pong | 169 | Ping·received·pong |
| 170 | ping·finished</code></pre><p>The·time-out·is·set·in:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">pong</span><span·class="p"·data-group-id=" | 170 | ping·finished</code></pre><p>The·time-out·is·set·in:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">pong</span><span·class="p"·data-group-id="9109020835-1">(</span><span·class="p"·data-group-id="9109020835-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 171 | ····</span><span·class="k">receive</span><span·class="w"> | 171 | ····</span><span·class="k">receive</span><span·class="w"> |
| 172 | ········</span><span·class="p"·data-group-id=" | 172 | ········</span><span·class="p"·data-group-id="9109020835-2">{</span><span·class="ss">ping</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ping_PID</span><span·class="p"·data-group-id="9109020835-2">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 173 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 173 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="9109020835-3">(</span><span·class="s">"Pong·received·ping</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9109020835-4">[</span><span·class="p"·data-group-id="[·...·truncated·by·diffoscope;·len:·61,·SHA:·e0b4ef92ad3bac481002d062d3b3cb948deedc29c9785616b38fd49d12724519·...·]35-3">)</span><span·class="p">,</span><span·class="w"> |
| 174 | ············</span><span·class="n">Ping_PID</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="ss">pong</span><span·class="p">,</span><span·class="w"> | 174 | ············</span><span·class="n">Ping_PID</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="ss">pong</span><span·class="p">,</span><span·class="w"> |
| 175 | ············</span><span·class="nf">pong</span><span·class="p"·data-group-id=" | 175 | ············</span><span·class="nf">pong</span><span·class="p"·data-group-id="9109020835-5">(</span><span·class="p"·data-group-id="9109020835-5">)</span><span·class="w"> |
| 176 | ····</span><span·class="k">after</span><span·class="w">·</span><span·class="mi">5000</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 176 | ····</span><span·class="k">after</span><span·class="w">·</span><span·class="mi">5000</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 177 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 177 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="9109020835-6">(</span><span·class="s">"Pong·timed·out</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9109020835-7">[</span><span·class="p"·data-group-id="9109[·...·truncated·by·diffoscope;·len:·57,·SHA:·850d953dc772c732b14957557f8e16502ce62a4de00f24c2a80b65da9ca33021·...·]35-6">)</span><span·class="w"> |
| 178 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>The·time-out·(<code·class="inline">after·5000</code>)·is·started·when·<code·class="inline">receive</code>·is·entered.·The·time-out | 178 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>The·time-out·(<code·class="inline">after·5000</code>)·is·started·when·<code·class="inline">receive</code>·is·entered.·The·time-out |
| 179 | is·canceled·if·<code·class="inline">{ping,Ping_PID}</code>·is·received.·If·<code·class="inline">{ping,Ping_PID}</code>·is·not | 179 | is·canceled·if·<code·class="inline">{ping,Ping_PID}</code>·is·received.·If·<code·class="inline">{ping,Ping_PID}</code>·is·not |
| 180 | received,·the·actions·following·the·time-out·are·done·after·5000·milliseconds. | 180 | received,·the·actions·following·the·time-out·are·done·after·5000·milliseconds. |
| 181 | <code·class="inline">after</code>·must·be·last·in·the·<code·class="inline">receive</code>,·that·is,·preceded·by·all·other·message | 181 | <code·class="inline">after</code>·must·be·last·in·the·<code·class="inline">receive</code>,·that·is,·preceded·by·all·other·message |
| 182 | reception·specifications·in·the·<code·class="inline">receive</code>.·It·is·also·possible·to·call·a | 182 | reception·specifications·in·the·<code·class="inline">receive</code>.·It·is·also·possible·to·call·a |
| 183 | function·that·returned·an·integer·for·the·time-out:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">after</span><span·class="w">·</span><span·class="nf">pong_timeout</span><span·class="p"·data-group-id=" | 183 | function·that·returned·an·integer·for·the·time-out:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">after</span><span·class="w">·</span><span·class="nf">pong_timeout</span><span·class="p"·data-group-id="8888594304-1">(</span><span·class="p"·data-group-id="8888594304-1">)</span><span·class="w">·</span><span·class="p">-></span></code></pre><p>In·general,·there·are·better·ways·than·using·time-outs·to·supervise·parts·of·a |
| 184 | distributed·Erlang·system.·Time-outs·are·usually·appropriate·to·supervise | 184 | distributed·Erlang·system.·Time-outs·are·usually·appropriate·to·supervise |
| 185 | external·events,·for·example,·if·you·have·expected·a·message·from·some·external | 185 | external·events,·for·example,·if·you·have·expected·a·message·from·some·external |
| 186 | system·within·a·specified·time.·For·example,·a·time-out·can·be·used·to·log·a | 186 | system·within·a·specified·time.·For·example,·a·time-out·can·be·used·to·log·a |
| 187 | user·out·of·the·messenger·system·if·they·have·not·accessed·it·for,·say,·ten | 187 | user·out·of·the·messenger·system·if·they·have·not·accessed·it·for,·say,·ten |
| 188 | minutes.</p><h2·id="error-handling"·class="section-heading"> | 188 | minutes.</p><h2·id="error-handling"·class="section-heading"> |
| 189 | ··<a·href="#error-handling"·class="hover-link"> | 189 | ··<a·href="#error-handling"·class="hover-link"> |
| 190 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 190 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 209, 96 lines modified | Offset 209, 96 lines modified | ||
| 209 | something·called·a·<em>signal</em>·to·all·the·processes·it·has·links·to.</p><p>The·signal·carries·information·about·the·pid·it·was·sent·from·and·the·exit | 209 | something·called·a·<em>signal</em>·to·all·the·processes·it·has·links·to.</p><p>The·signal·carries·information·about·the·pid·it·was·sent·from·and·the·exit |
| 210 | reason.</p><p>The·default·behaviour·of·a·process·that·receives·a·normal·exit·is·to·ignore·the | 210 | reason.</p><p>The·default·behaviour·of·a·process·that·receives·a·normal·exit·is·to·ignore·the |
| 211 | signal.</p><p>The·default·behaviour·in·the·two·other·cases·(that·is,·abnormal·exit)·above·is | 211 | signal.</p><p>The·default·behaviour·in·the·two·other·cases·(that·is,·abnormal·exit)·above·is |
| 212 | to:</p><ul><li>Bypass·all·messages·to·the·receiving·process.</li><li>Kill·the·receiving·process.</li><li>Propagate·the·same·error·signal·to·the·links·of·the·killed·process.</li></ul><p>In·this·way·you·can·connect·all·processes·in·a·transaction·together·using·links. | 212 | to:</p><ul><li>Bypass·all·messages·to·the·receiving·process.</li><li>Kill·the·receiving·process.</li><li>Propagate·the·same·error·signal·to·the·links·of·the·killed·process.</li></ul><p>In·this·way·you·can·connect·all·processes·in·a·transaction·together·using·links. |
| 213 | If·one·of·the·processes·exits·abnormally,·all·the·processes·in·the·transaction | 213 | If·one·of·the·processes·exits·abnormally,·all·the·processes·in·the·transaction |
| 214 | are·killed.·As·it·is·often·wanted·to·create·a·process·and·link·to·it·at·the·same | 214 | are·killed.·As·it·is·often·wanted·to·create·a·process·and·link·to·it·at·the·same |
| 215 | time,·there·is·a·special·BIF,·<a·href="../../erts-15.2.3/doc/html/erlang.html#spawn_link/1">spawn_link</a>·that·does·the | 215 | time,·there·is·a·special·BIF,·<a·href="../../erts-15.2.3/doc/html/erlang.html#spawn_link/1">spawn_link</a>·that·does·the |
| 216 | same·as·<code·class="inline">spawn</code>,·but·also·creates·a·link·to·the·spawned·process.</p><p>Now·an·example·of·the·ping·pong·example·using·links·to·terminate·"pong":</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 216 | same·as·<code·class="inline">spawn</code>,·but·also·creates·a·link·to·the·spawned·process.</p><p>Now·an·example·of·the·ping·pong·example·using·links·to·terminate·"pong":</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="1961444629-1">(</span><span·class="ss">tut20</span><span·class="p"·data-group-id="1961444629-1">)</span><span·class="p">.</span><span·class="w"> |
| 217 | </span><span·class="w"> | 217 | </span><span·class="w"> |
| 218 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 218 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="1961444629-2">(</span><span·class="p"·data-group-id="1961444629-3">[</span><span·class="ss">start</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">··</span><span·class="ss">ping</span><span·class="p">/</span><s[·...·truncated·by·diffoscope;·len:·242,·SHA:·e4e8c4ec6b665abc6edea6b91f7185086589d5ae2bfaa4243168be824a4a8f29·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 219 | </span><span·class="nf">ping</span><span·class="p"·data-group-id=" | 219 | </span><span·class="nf">ping</span><span·class="p"·data-group-id="1961444629-4">(</span><span·class="n">N</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pong_Pid</span><span·class="p"·data-group-id="1961444629-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 220 | ····</span><span·class="nf">link</span><span·class="p"·data-group-id=" | 220 | ····</span><span·class="nf">link</span><span·class="p"·data-group-id="1961444629-5">(</span><span·class="n">Pong_Pid</span><span·class="p"·data-group-id="1961444629-5">)</span><span·class="p">,</span><span·class="w"> |
| 221 | ····</span><span·class="nf">ping1</span><span·class="p"·data-group-id=" | 221 | ····</span><span·class="nf">ping1</span><span·class="p"·data-group-id="1961444629-6">(</span><span·class="n">N</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pong_Pid</span><span·class="p"·data-group-id="1961444629-6">)</span><span·class="p">.</span><span·class="w"> |
| 222 | </span><span·class="nf">ping1</span><span·class="p"·data-group-id=" | 222 | </span><span·class="nf">ping1</span><span·class="p"·data-group-id="1961444629-7">(</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="p"·data-group-id="1961444629-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 223 | ····</span><span·class="nf">exit</span><span·class="p"·data-group-id=" | 223 | ····</span><span·class="nf">exit</span><span·class="p"·data-group-id="1961444629-8">(</span><span·class="ss">ping</span><span·class="p"·data-group-id="1961444629-8">)</span><span·class="p">;</span><span·class="w"> |
| 224 | </span><span·class="nf">ping1</span><span·class="p"·data-group-id=" | 224 | </span><span·class="nf">ping1</span><span·class="p"·data-group-id="1961444629-9">(</span><span·class="n">N</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pong_Pid</span><span·class="p"·data-group-id="1961444629-9">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 225 | ····</span><span·class="n">Pong_Pid</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 225 | ····</span><span·class="n">Pong_Pid</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="1961444629-10">{</span><span·class="ss">ping</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="1961444629-11">(</span><span·class="p"·data-group-id="1961444629-11">)</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·20,·SHA:·ac5d57f0476164a0d94967ad130aadeefc11df61807fbae88a5dbc8149839f89·...·]-10">}</span><span·class="p">,</span><span·class="w"> |
| 226 | ····</span><span·class="k">receive</span><span·class="w"> | 226 | ····</span><span·class="k">receive</span><span·class="w"> |
| 227 | ········</span><span·class="ss">pong</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 227 | ········</span><span·class="ss">pong</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 228 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 228 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="1961444629-12">(</span><span·class="s">"Ping·received·pong</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1961444629-13">[</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·66,·SHA:·d54b2eb3ebbe90d9772a841954e8f1c96b7b3b38d4db395489f01e1883d89530·...·]-12">)</span><span·class="w"> |
| 229 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 229 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 230 | ····</span><span·class="nf">ping1</span><span·class="p"·data-group-id=" | 230 | ····</span><span·class="nf">ping1</span><span·class="p"·data-group-id="1961444629-14">(</span><span·class="n">N</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pong_Pid</span><span·class="p"·data-group-id="19[·...·truncated·by·diffoscope;·len:·8,·SHA:·6506f5a8e125d1359f987b96dd295e02fe4c98e7abe611f3335fee41cdd63c51·...·]-14">)</span><span·class="p">.</span><span·class="w"> |
| 231 | </span><span·class="nf">pong</span><span·class="p"·data-group-id=" | 231 | </span><span·class="nf">pong</span><span·class="p"·data-group-id="1961444629-15">(</span><span·class="p"·data-group-id="1961444629-15">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 232 | ····</span><span·class="k">receive</span><span·class="w"> | 232 | ····</span><span·class="k">receive</span><span·class="w"> |
| 233 | ········</span><span·class="p"·data-group-id=" | 233 | ········</span><span·class="p"·data-group-id="1961444629-16">{</span><span·class="ss">ping</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ping_PID</span><span·class="p"·data-group-id="1961444629-16">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 234 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 234 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="1961444629-17">(</span><span·class="s">"Pong·received·ping</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1961444629-18">[</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·66,·SHA:·8df69eedd9289b62c6c715d0cfcd750cf7fc3f48fa7dc391774d96b654b9e5ad·...·]-17">)</span><span·class="p">,</span><span·class="w"> |
| 235 | ············</span><span·class="n">Ping_PID</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="ss">pong</span><span·class="p">,</span><span·class="w"> | 235 | ············</span><span·class="n">Ping_PID</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="ss">pong</span><span·class="p">,</span><span·class="w"> |
| 236 | ············</span><span·class="nf">pong</span><span·class="p"·data-group-id=" | 236 | ············</span><span·class="nf">pong</span><span·class="p"·data-group-id="1961444629-19">(</span><span·class="p"·data-group-id="1961444629-19">)</span><span·class="w"> |
| 237 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 237 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 238 | </span><span·class="nf">start</span><span·class="p"·data-group-id=" | 238 | </span><span·class="nf">start</span><span·class="p"·data-group-id="1961444629-20">(</span><span·class="n">Ping_Node</span><span·class="p"·data-group-id="1961444629-20">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 239 | ····</span><span·class="n">PongPID</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">spawn</span><span·class="p"·data-group-id=" | 239 | ····</span><span·class="n">PongPID</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">spawn</span><span·class="p"·data-group-id="1961444629-21">(</span><span·class="ss">tut20</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">pong</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1961444629-22">[</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·69,·SHA:·9a2eca0e08c3c8d2f0456302c02e74cf897cfecb8d77c7df1b2c814d9bac05c7·...·]-21">)</span><span·class="p">,</span><span·class="w"> |
| 240 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id=" | 240 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id="1961444629-23">(</span><span·class="n">Ping_Node</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">tut20</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ping</span><span·class="p">,</span><span·class="w">·</span>[·...·truncated·by·diffoscope;·len:·252,·SHA:·01c93d84b1da327237c6415e1144cb2b7f3df9903e6d89027997295ababaf092·...·]-23">)</span><span·class="p">.</span></code></pre><pre><code·class="text">(s1@bill)3>·tut20:start(s2@kosken). |
| 241 | Pong·received·ping | 241 | Pong·received·ping |
| 242 | <3820.41.0> | 242 | <3820.41.0> |
| 243 | Ping·received·pong | 243 | Ping·received·pong |
| 244 | Pong·received·ping | 244 | Pong·received·ping |
| 245 | Ping·received·pong | 245 | Ping·received·pong |
| 246 | Pong·received·ping | 246 | Pong·received·ping |
| 247 | Ping·received·pong</code></pre><p>This·is·a·slight·modification·of·the·ping·pong·program·where·both·processes·are | 247 | Ping·received·pong</code></pre><p>This·is·a·slight·modification·of·the·ping·pong·program·where·both·processes·are |
| 248 | spawned·from·the·same·<code·class="inline">start/1</code>·function,·and·the·"ping"·process·can·be·spawned | 248 | spawned·from·the·same·<code·class="inline">start/1</code>·function,·and·the·"ping"·process·can·be·spawned |
| 249 | on·a·separate·node.·Notice·the·use·of·the·<code·class="inline">link</code>·BIF.·"Ping"·calls | 249 | on·a·separate·node.·Notice·the·use·of·the·<code·class="inline">link</code>·BIF.·"Ping"·calls |
| 250 | <a·href="../../erts-15.2.3/doc/html/erlang.html#exit/1"><code·class="inline">exit(ping)</code></a>·when·it·finishes·and·this·causes·an·exit·signal·to·be | 250 | <a·href="../../erts-15.2.3/doc/html/erlang.html#exit/1"><code·class="inline">exit(ping)</code></a>·when·it·finishes·and·this·causes·an·exit·signal·to·be |
| 251 | sent·to·"pong",·which·also·terminates.</p><p>It·is·possible·to·modify·the·default·behaviour·of·a·process·so·that·it·does·not | 251 | sent·to·"pong",·which·also·terminates.</p><p>It·is·possible·to·modify·the·default·behaviour·of·a·process·so·that·it·does·not |
| 252 | get·killed·when·it·receives·abnormal·exit·signals.·Instead,·all·signals·are | 252 | get·killed·when·it·receives·abnormal·exit·signals.·Instead,·all·signals·are |
| 253 | turned·into·normal·messages·on·the·format·<code·class="inline">{'EXIT',FromPID,Reason}</code>·and·added·to | 253 | turned·into·normal·messages·on·the·format·<code·class="inline">{'EXIT',FromPID,Reason}</code>·and·added·to |
| 254 | the·end·of·the·receiving·process'·message·queue.·This·behaviour·is·set·by:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">process_flag</span><span·class="p"·data-group-id=" | 254 | the·end·of·the·receiving·process'·message·queue.·This·behaviour·is·set·by:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">process_flag</span><span·class="p"·data-group-id="1244990766-1">(</span><span·class="ss">trap_exit</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">true</span><span·class="p"·data-group-id="1244990766-1">)</span></code></pre><p>There·are·several·other·process·flags,·see·<a·href="../../erts-15.2.3/doc/html/erlang.html#process_flag/2">erlang(3)</a>. |
| 255 | Changing·the·default·behaviour·of·a·process·in·this·way·is·usually·not·done·in | 255 | Changing·the·default·behaviour·of·a·process·in·this·way·is·usually·not·done·in |
| 256 | standard·user·programs,·but·is·left·to·the·supervisory·programs·in·OTP.·However, | 256 | standard·user·programs,·but·is·left·to·the·supervisory·programs·in·OTP.·However, |
| 257 | the·ping·pong·program·is·modified·to·illustrate·exit·trapping.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 257 | the·ping·pong·program·is·modified·to·illustrate·exit·trapping.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="6825998969-1">(</span><span·class="ss">tut21</span><span·class="p"·data-group-id="6825998969-1">)</span><span·class="p">.</span><span·class="w"> |
| 258 | </span><span·class="w"> | 258 | </span><span·class="w"> |
| 259 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 259 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="6825998969-2">(</span><span·class="p"·data-group-id="6825998969-3">[</span><span·class="ss">start</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">··</span><span·class="ss">ping</span><span·class="p">/</span><s[·...·truncated·by·diffoscope;·len:·241,·SHA:·c4e2b2cb8277b55424419c5a858d18187b1f4d413cde9713d0100f82118e0144·...·]9-2">)</span><span·class="p">.</span><span·class="w"> |
| 260 | </span><span·class="nf">ping</span><span·class="p"·data-group-id=" | 260 | </span><span·class="nf">ping</span><span·class="p"·data-group-id="6825998969-4">(</span><span·class="n">N</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pong_Pid</span><span·class="p"·data-group-id="6825998969-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| Max diff block lines reached; 72732/115788 bytes (62.81%) of diff not shown. | |||
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| 136 | </span><span·class="mi">7</span><span·class="gp·unselectable"> | 136 | </span><span·class="mi">7</span><span·class="gp·unselectable"> |
| 137 | 2>·</span></code></pre><p>As·shown,·the·Erlang·shell·numbers·the·lines·that·can·be·entered,·(as·1>·2>)·and | 137 | 2>·</span></code></pre><p>As·shown,·the·Erlang·shell·numbers·the·lines·that·can·be·entered,·(as·1>·2>)·and |
| 138 | that·it·correctly·says·that·2·+·5·is·7.·If·you·make·writing·mistakes·in·the | 138 | that·it·correctly·says·that·2·+·5·is·7.·If·you·make·writing·mistakes·in·the |
| 139 | shell,·you·can·delete·with·the·backspace·key,·as·in·most·shells.·There·are·many | 139 | shell,·you·can·delete·with·the·backspace·key,·as·in·most·shells.·There·are·many |
| 140 | more·editing·commands·in·the·shell·(see | 140 | more·editing·commands·in·the·shell·(see |
| 141 | <a·href="../../erts-15.2.3/doc/html/tty.html">tty·-·A·command·line·interface</a>·in·ERTS·User's·Guide).</p><p>(Notice·that·many·line·numbers·given·by·the·shell·in·the·following·examples·are | 141 | <a·href="../../erts-15.2.3/doc/html/tty.html">tty·-·A·command·line·interface</a>·in·ERTS·User's·Guide).</p><p>(Notice·that·many·line·numbers·given·by·the·shell·in·the·following·examples·are |
| 142 | out·of·sequence.·This·is·because·this·tutorial·was·written·and·code-tested·in | 142 | out·of·sequence.·This·is·because·this·tutorial·was·written·and·code-tested·in |
| 143 | separate·sessions).</p><p>Here·is·a·bit·more·complex·calculation:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="p"·data-group-id=" | 143 | separate·sessions).</p><p>Here·is·a·bit·more·complex·calculation:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="p"·data-group-id="4461202087-1">(</span><span·class="mi">42</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="mi">77</span><span·class="p"·data-group-id="4461202087-1">)</span><span·class="w">·</span><span·class="o">*</span><span·class="w">·</span><span·class="mi">66</span><span·class="w">·</span><span·class="o">/</span><span·class="w">·</span><span·class="mi">3</span><span·class="p">.</span><span·class="w"> |
| 144 | </span><span·class="mf">2618.0</span></code></pre><p>Notice·the·use·of·brackets,·the·multiplication·operator·<code·class="inline">*</code>,·and·the·division | 144 | </span><span·class="mf">2618.0</span></code></pre><p>Notice·the·use·of·brackets,·the·multiplication·operator·<code·class="inline">*</code>,·and·the·division |
| 145 | operator·<code·class="inline">/</code>,·as·in·normal·arithmetic·(see | 145 | operator·<code·class="inline">/</code>,·as·in·normal·arithmetic·(see |
| 146 | <a·href="../../doc/system/expressions.html">Expressions</a>).</p><p>Press·Control-C·to·shut·down·the·Erlang·system·and·the·Erlang·shell.</p><p>The·following·output·is·shown:</p><pre><code·class="text">BREAK:·(a)bort·(c)ontinue·(p)roc·info·(i)nfo·(l)oaded | 146 | <a·href="../../doc/system/expressions.html">Expressions</a>).</p><p>Press·Control-C·to·shut·down·the·Erlang·system·and·the·Erlang·shell.</p><p>The·following·output·is·shown:</p><pre><code·class="text">BREAK:·(a)bort·(c)ontinue·(p)roc·info·(i)nfo·(l)oaded |
| 147 | ·······(v)ersion·(k)ill·(D)b-tables·(d)istribution | 147 | ·······(v)ersion·(k)ill·(D)b-tables·(d)istribution |
| 148 | a | 148 | a |
| 149 | $</code></pre><p>Type·<code·class="inline">a</code>·to·leave·the·Erlang·system.</p><p>Another·way·to·shut·down·the·Erlang·system·is·by·entering·<a·href="../../erts-15.2.3/doc/html/erlang.html#halt/0"><code·class="inline">halt/0</code></a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="nf">halt</span><span·class="p"·data-group-id=" | 149 | $</code></pre><p>Type·<code·class="inline">a</code>·to·leave·the·Erlang·system.</p><p>Another·way·to·shut·down·the·Erlang·system·is·by·entering·<a·href="../../erts-15.2.3/doc/html/erlang.html#halt/0"><code·class="inline">halt/0</code></a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="nf">halt</span><span·class="p"·data-group-id="7990181837-1">(</span><span·class="p"·data-group-id="7990181837-1">)</span><span·class="p">.</span><span·class="w"> |
| 150 | </span><span·class="err">$</span></code></pre><h2·id="modules-and-functions"·class="section-heading"> | 150 | </span><span·class="err">$</span></code></pre><h2·id="modules-and-functions"·class="section-heading"> |
| 151 | ··<a·href="#modules-and-functions"·class="hover-link"> | 151 | ··<a·href="#modules-and-functions"·class="hover-link"> |
| 152 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 152 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 153 | ··</a> | 153 | ··</a> |
| 154 | ··<span·class="text">Modules·and·Functions</span> | 154 | ··<span·class="text">Modules·and·Functions</span> |
| 155 | </h2> | 155 | </h2> |
| 156 | <p>A·programming·language·is·not·much·use·if·you·only·can·run·code·from·the·shell. | 156 | <p>A·programming·language·is·not·much·use·if·you·only·can·run·code·from·the·shell. |
| 157 | So·here·is·a·small·Erlang·program.·Enter·it·into·a·file·named·<code·class="inline">tut.erl</code>·using·a | 157 | So·here·is·a·small·Erlang·program.·Enter·it·into·a·file·named·<code·class="inline">tut.erl</code>·using·a |
| 158 | suitable·text·editor.·The·file·name·<code·class="inline">tut.erl</code>·is·important,·and·also·that·it·is | 158 | suitable·text·editor.·The·file·name·<code·class="inline">tut.erl</code>·is·important,·and·also·that·it·is |
| 159 | in·the·same·directory·as·the·one·where·you·started·<code·class="inline">erl</code>).·If·you·are·lucky·your | 159 | in·the·same·directory·as·the·one·where·you·started·<code·class="inline">erl</code>).·If·you·are·lucky·your |
| 160 | editor·has·an·Erlang·mode·that·makes·it·easier·for·you·to·enter·and·format·your | 160 | editor·has·an·Erlang·mode·that·makes·it·easier·for·you·to·enter·and·format·your |
| 161 | code·nicely·(see·<a·href="../../lib/tools-4.1.1/doc/html/erlang_mode_chapter.html">The·Erlang·mode·for·Emacs</a> | 161 | code·nicely·(see·<a·href="../../lib/tools-4.1.1/doc/html/erlang_mode_chapter.html">The·Erlang·mode·for·Emacs</a> |
| 162 | in·Tools·User's·Guide),·but·you·can·manage·perfectly·well·without.·Here·is·the | 162 | in·Tools·User's·Guide),·but·you·can·manage·perfectly·well·without.·Here·is·the |
| 163 | code·to·enter:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="8900522038-1">(</span><span·class="ss">tut</span><span·class="p"·data-group-id="8900522038-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 164 | 163 | code·to·enter:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="6924033214-1">(</span><span·class="ss">tut</span><span·class="p"·data-group-id="6924033214-1">)</span><span·class="p">.</span><span·class="w"> | |
| 164 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="6924033214-2">(</span><span·class="p"·data-group-id="6924033214-3">[</span><span·class="ss">double</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id="6924033214-3">]</span><span·class="p"·data-group-id="6924033214-2">)</span><span·class="p">.</span><span·class="w"> | ||
| 165 | </span><span·class="nf">double</span><span·class="p"·data-group-id=" | 165 | </span><span·class="nf">double</span><span·class="p"·data-group-id="6924033214-4">(</span><span·class="n">X</span><span·class="p"·data-group-id="6924033214-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 166 | ····</span><span·class="mi">2</span><span·class="w">·</span><span·class="o">*</span><span·class="w">·</span><span·class="n">X</span><span·class="p">.</span></code></pre><p>It·is·not·hard·to·guess·that·this·program·doubles·the·value·of·numbers.·The | 166 | ····</span><span·class="mi">2</span><span·class="w">·</span><span·class="o">*</span><span·class="w">·</span><span·class="n">X</span><span·class="p">.</span></code></pre><p>It·is·not·hard·to·guess·that·this·program·doubles·the·value·of·numbers.·The |
| 167 | first·two·lines·of·the·code·are·described·later.·Let·us·compile·the·program. | 167 | first·two·lines·of·the·code·are·described·later.·Let·us·compile·the·program. |
| 168 | This·can·be·done·in·an·Erlang·shell·as·follows,·where·<code·class="inline">c</code>·means·compile:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="nf">c</span><span·class="p"·data-group-id="9 | 168 | This·can·be·done·in·an·Erlang·shell·as·follows,·where·<code·class="inline">c</code>·means·compile:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="nf">c</span><span·class="p"·data-group-id="9236375861-1">(</span><span·class="ss">tut</span><span·class="p"·data-group-id="9236375861-1">)</span><span·class="p">.</span><span·class="w"> |
| 169 | </span><span·class="p"·data-group-id="9 | 169 | </span><span·class="p"·data-group-id="9236375861-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="ss">tut</span><span·class="p"·data-group-id="9236375861-2">}</span></code></pre><p>The·<code·class="inline">{ok,tut}</code>·means·that·the·compilation·is·OK.·If·it·says·<code·class="inline">error</code>·it·means |
| 170 | that·there·is·some·mistake·in·the·text·that·you·entered.·Additional·error | 170 | that·there·is·some·mistake·in·the·text·that·you·entered.·Additional·error |
| 171 | messages·gives·an·idea·to·what·is·wrong·so·you·can·modify·the·text·and·then·try | 171 | messages·gives·an·idea·to·what·is·wrong·so·you·can·modify·the·text·and·then·try |
| 172 | to·compile·the·program·again.</p><p>Now·run·the·program:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">4>·</span><span·class="nc">tut</span><span·class="p">:</span><span·class="nf">double</span><span·class="p"·data-group-id=" | 172 | to·compile·the·program·again.</p><p>Now·run·the·program:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">4>·</span><span·class="nc">tut</span><span·class="p">:</span><span·class="nf">double</span><span·class="p"·data-group-id="0805666731-1">(</span><span·class="mi">10</span><span·class="p"·data-group-id="0805666731-1">)</span><span·class="p">.</span><span·class="w"> |
| 173 | </span><span·class="mi">20</span></code></pre><p>As·expected,·double·of·10·is·20.</p><p>Now·let·us·get·back·to·the·first·two·lines·of·the·code.·Erlang·programs·are | 173 | </span><span·class="mi">20</span></code></pre><p>As·expected,·double·of·10·is·20.</p><p>Now·let·us·get·back·to·the·first·two·lines·of·the·code.·Erlang·programs·are |
| 174 | written·in·files.·Each·file·contains·an·Erlang·<em>module</em>.·The·first·line·of·code | 174 | written·in·files.·Each·file·contains·an·Erlang·<em>module</em>.·The·first·line·of·code |
| 175 | in·the·module·is·the·module·name·(see·<a·href="../../doc/system/modules.html">Modules</a>):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 175 | in·the·module·is·the·module·name·(see·<a·href="../../doc/system/modules.html">Modules</a>):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="6787421320-1">(</span><span·class="ss">tut</span><span·class="p"·data-group-id="6787421320-1">)</span><span·class="p">.</span></code></pre><p>Thus,·the·module·is·called·<em>tut</em>.·Notice·the·full·stop·<code·class="inline">.</code>·at·the·end·of·the |
| 176 | line.·The·files·which·are·used·to·store·the·module·must·have·the·same·name·as | 176 | line.·The·files·which·are·used·to·store·the·module·must·have·the·same·name·as |
| 177 | the·module·but·with·the·extension·<code·class="inline">.erl</code>.·In·this·case·the·file·name·is | 177 | the·module·but·with·the·extension·<code·class="inline">.erl</code>.·In·this·case·the·file·name·is |
| 178 | <code·class="inline">tut.erl</code>.·When·using·a·function·in·another·module,·the·syntax | 178 | <code·class="inline">tut.erl</code>.·When·using·a·function·in·another·module,·the·syntax |
| 179 | <code·class="inline">module_name:function_name(arguments)</code>·is·used.·So·the·following·means·call | 179 | <code·class="inline">module_name:function_name(arguments)</code>·is·used.·So·the·following·means·call |
| 180 | function·<code·class="inline">double</code>·in·module·<code·class="inline">tut</code>·with·argument·<code·class="inline">10</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">4>·</span><span·class="nc">tut</span><span·class="p">:</span><span·class="nf">double</span><span·class="p"·data-group-id=" | 180 | function·<code·class="inline">double</code>·in·module·<code·class="inline">tut</code>·with·argument·<code·class="inline">10</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">4>·</span><span·class="nc">tut</span><span·class="p">:</span><span·class="nf">double</span><span·class="p"·data-group-id="8999692079-1">(</span><span·class="mi">10</span><span·class="p"·data-group-id="8999692079-1">)</span><span·class="p">.</span></code></pre><p>The·second·line·says·that·the·module·<code·class="inline">tut</code>·contains·a·function·called·<code·class="inline">double</code>, |
| 181 | which·takes·one·argument·(<code·class="inline">X</code>·in·our·example):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 181 | which·takes·one·argument·(<code·class="inline">X</code>·in·our·example):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="6092314300-1">(</span><span·class="p"·data-group-id="6092314300-2">[</span><span·class="ss">double</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id="6092314300-2">]</span><span·class="p"·data-group-id="6092314300-1">)</span><span·class="p">.</span></code></pre><p>The·second·line·also·says·that·this·function·can·be·called·from·outside·the |
| 182 | module·<code·class="inline">tut</code>.·More·about·this·later.·Again,·notice·the·<code·class="inline">.</code>·at·the·end·of·the | 182 | module·<code·class="inline">tut</code>.·More·about·this·later.·Again,·notice·the·<code·class="inline">.</code>·at·the·end·of·the |
| 183 | line.</p><p>Now·for·a·more·complicated·example,·the·factorial·of·a·number.·For·example,·the | 183 | line.</p><p>Now·for·a·more·complicated·example,·the·factorial·of·a·number.·For·example,·the |
| 184 | factorial·of·4·is·4·<em>·3·</em>·2·*·1,·which·equals·24.</p><p>Enter·the·following·code·in·a·file·named·<code·class="inline">tut1.erl</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 184 | factorial·of·4·is·4·<em>·3·</em>·2·*·1,·which·equals·24.</p><p>Enter·the·following·code·in·a·file·named·<code·class="inline">tut1.erl</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="1229333499-1">(</span><span·class="ss">tut1</span><span·class="p"·data-group-id="1229333499-1">)</span><span·class="p">.</span><span·class="w"> |
| 185 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 185 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="1229333499-2">(</span><span·class="p"·data-group-id="1229333499-3">[</span><span·class="ss">fac</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id="1229333499-3">]</span><span·class="p"·data-group-id="1229333499-2">)</span><span·class="p">.</span><span·class="w"> |
| 186 | </span><span·class="nf">fac</span><span·class="p"·data-group-id=" | 186 | </span><span·class="nf">fac</span><span·class="p"·data-group-id="1229333499-4">(</span><span·class="mi">1</span><span·class="p"·data-group-id="1229333499-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 187 | ····</span><span·class="mi">1</span><span·class="p">;</span><span·class="w"> | 187 | ····</span><span·class="mi">1</span><span·class="p">;</span><span·class="w"> |
| 188 | </span><span·class="nf">fac</span><span·class="p"·data-group-id=" | 188 | </span><span·class="nf">fac</span><span·class="p"·data-group-id="1229333499-5">(</span><span·class="n">N</span><span·class="p"·data-group-id="1229333499-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 189 | ····</span><span·class="n">N</span><span·class="w">·</span><span·class="o">*</span><span·class="w">·</span><span·class="nf">fac</span><span·class="p"·data-group-id=" | 189 | ····</span><span·class="n">N</span><span·class="w">·</span><span·class="o">*</span><span·class="w">·</span><span·class="nf">fac</span><span·class="p"·data-group-id="1229333499-6">(</span><span·class="n">N</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="1229333499-6">)</span><span·class="p">.</span></code></pre><p>So·this·is·a·module,·called·<code·class="inline">tut1</code>·that·contains·a·function·called·<code·class="inline">fac></code>,·which |
| 190 | takes·one·argument,·<code·class="inline">N</code>.</p><p>The·first·part·says·that·the·factorial·of·1·is·1.:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fac</span><span·class="p"·data-group-id=" | 190 | takes·one·argument,·<code·class="inline">N</code>.</p><p>The·first·part·says·that·the·factorial·of·1·is·1.:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fac</span><span·class="p"·data-group-id="3159600877-1">(</span><span·class="mi">1</span><span·class="p"·data-group-id="3159600877-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 191 | ····</span><span·class="mi">1</span><span·class="p">;</span></code></pre><p>Notice·that·this·part·ends·with·a·semicolon·<code·class="inline">;</code>·that·indicates·that·there·is | 191 | ····</span><span·class="mi">1</span><span·class="p">;</span></code></pre><p>Notice·that·this·part·ends·with·a·semicolon·<code·class="inline">;</code>·that·indicates·that·there·is |
| 192 | more·of·the·function·<code·class="inline">fac></code>·to·come.</p><p>The·second·part·says·that·the·factorial·of·N·is·N·multiplied·by·the·factorial·of | 192 | more·of·the·function·<code·class="inline">fac></code>·to·come.</p><p>The·second·part·says·that·the·factorial·of·N·is·N·multiplied·by·the·factorial·of |
| 193 | N·-·1:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fac</span><span·class="p"·data-group-id="8781717434-1">(</span><span·class="n">N</span><span·class="p"·data-group-id="8781717434-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | ||
| 194 | ····</span><span·class="n">N</span><span·class="w">·</span><span·class="o">*</span><span·class="w">·</span><span·class="nf">fac</span><span·class="p"·data-group-id="8781717434-2">(</span><span·class="n">N</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="8781717434-2">)</span><span·class="p">.</span></code></pre><p>Notice·that·this·part·ends·with·a·<code·class="inline">.</code>·saying·that·there·are·no·more·parts·of | ||
| 195 | this·function.</p><p>Compile·the·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">5>·</span><span·class="nf">c</span><span·class="p"·data-group-id="4590603093-1">(</span><span·class="ss">tut1</span><span·class="p"·data-group-id="4590603093-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 196 | </ | 193 | N·-·1:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fac</span><span·class="p"·data-group-id="4822449372-1">(</span><span·class="n">N</span><span·class="p"·data-group-id="4822449372-1">)</span><span·class="w">·</span><span·class="p">-[·...·truncated·by·diffoscope;·len:·4,·SHA:·77d57e39b407cbca2770fb31b55c148c757f4f84d1e2ce824c7d5cf9412a6298·...·]</span><span·class="w"> |
| 194 | ····</span><span·class="n">N</span><span·class="w">·</span><span·class="o">*</span><span·class="w">·</span><span·class="nf">fac</span><span·class="p"·data-group-id="4822449372-2">(</span><span·class="n">N</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="4822449372-2">)</span><span·class="p">.</span></code></pre><p>Notice·that·this·part·ends·with·a·<code·class="inline">.</code>·saying·that·there·are·no·more·parts·of | ||
| 195 | this·function.</p><p>Compile·the·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">5>·</span><span·class="nf">c</span><span·class="p"·data-group-id="5045298142-1">(</span><span·class="ss">tut1</span><span·class="p"·data-group-id="5045298142-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 196 | </span><span·class="p"·data-group-id="5045298142-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="ss">tut1</span><span·class="p"·data-group-id="5045298142-2">}</span></code></pre><p>And·now·calculate·the·factorial·of·4.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">6>·</span><span·class="nc">tut1</span><span·class="p">:</span><span·class="nf">fac</span><span·class="p"·data-group-id="7790285377-1">(</span><span·class="mi">4</span><span·class="p"·data-group-id="7790285377-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 197 | </span><span·class="mi">24</span></code></pre><p>Here·the·function·<code·class="inline">fac></code>·in·module·<code·class="inline">tut1</code>·is·called·with·argument·<code·class="inline">4</code>.</p><p>A·function·can·have·many·arguments.·Let·us·expand·the·module·<code·class="inline">tut1</code>·with·the | 197 | </span><span·class="mi">24</span></code></pre><p>Here·the·function·<code·class="inline">fac></code>·in·module·<code·class="inline">tut1</code>·is·called·with·argument·<code·class="inline">4</code>.</p><p>A·function·can·have·many·arguments.·Let·us·expand·the·module·<code·class="inline">tut1</code>·with·the |
| 198 | function·to·multiply·two·numbers:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 198 | function·to·multiply·two·numbers:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="8238508514-1">(</span><span·class="ss">tut1</span><span·class="p"·data-group-id="8238508514-1">)</span><span·class="p">.</span><span·class="w"> |
| 199 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 199 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="8238508514-2">(</span><span·class="p"·data-group-id="8238508514-3">[</span><span·class="ss">fac</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">mult</span><span·class="p">/</span><span[·...·truncated·by·diffoscope;·len:·114,·SHA:·574636ac6e5eebdfc44d6a4f01ed29af7d2b9cc8398c898ee0bffa8aa3096057·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 200 | </span><span·class="nf">fac</span><span·class="p"·data-group-id=" | 200 | </span><span·class="nf">fac</span><span·class="p"·data-group-id="8238508514-4">(</span><span·class="mi">1</span><span·class="p"·data-group-id="8238508514-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 201 | ····</span><span·class="mi">1</span><span·class="p">;</span><span·class="w"> | 201 | ····</span><span·class="mi">1</span><span·class="p">;</span><span·class="w"> |
| 202 | </span><span·class="nf">fac</span><span·class="p"·data-group-id=" | 202 | </span><span·class="nf">fac</span><span·class="p"·data-group-id="8238508514-5">(</span><span·class="n">N</span><span·class="p"·data-group-id="8238508514-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 203 | ····</span><span·class="n">N</span><span·class="w">·</span><span·class="o">*</span><span·class="w">·</span><span·class="nf">fac</span><span·class="p"·data-group-id=" | 203 | ····</span><span·class="n">N</span><span·class="w">·</span><span·class="o">*</span><span·class="w">·</span><span·class="nf">fac</span><span·class="p"·data-group-id="8238508514-6">(</span><span·class="n">N</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="8238508514-6">)</span><span·class="p">.</span><span·class="w"> |
| 204 | </span><span·class="nf">mult</span><span·class="p"·data-group-id=" | 204 | </span><span·class="nf">mult</span><span·class="p"·data-group-id="8238508514-7">(</span><span·class="n">X</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Y</span><span·class="p"·data-group-id="8238508514-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 205 | ····</span><span·class="n">X</span><span·class="w">·</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Y</span><span·class="p">.</span></code></pre><p>Notice·that·it·is·also·required·to·expand·the·<code·class="inline">-export</code>·line·with·the | 205 | ····</span><span·class="n">X</span><span·class="w">·</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Y</span><span·class="p">.</span></code></pre><p>Notice·that·it·is·also·required·to·expand·the·<code·class="inline">-export</code>·line·with·the |
| 206 | information·that·there·is·another·function·<code·class="inline">mult</code>·with·two·arguments.</p><p>Compile:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">7>·</span><span·class="nf">c</span><span·class="p"·data-group-id=" | 206 | information·that·there·is·another·function·<code·class="inline">mult</code>·with·two·arguments.</p><p>Compile:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">7>·</span><span·class="nf">c</span><span·class="p"·data-group-id="3060085588-1">(</span><span·class="ss">tut1</span><span·class="p"·data-group-id="3060085588-1">)</span><span·class="p">.</span><span·class="w"> |
| 207 | </span><span·class="p"·data-group-id=" | 207 | </span><span·class="p"·data-group-id="3060085588-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="ss">tut1</span><span·class="p"·data-group-id="3060085588-2">}</span></code></pre><p>Try·out·the·new·function·<code·class="inline">mult</code>:</p><pre><code·class="makeup·[·...·truncated·by·diffoscope;·len:·314,·SHA:·9b88895d84f9bd63141920d1f9496f5a625ca52cd9d639534605a7bc42d9bfb8·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 208 | </span><span·class="mi">12</span></code></pre><p>In·this·example·the·numbers·are·integers·and·the·arguments·in·the·functions·in | 208 | </span><span·class="mi">12</span></code></pre><p>In·this·example·the·numbers·are·integers·and·the·arguments·in·the·functions·in |
| 209 | the·code·<code·class="inline">N</code>,·<code·class="inline">X</code>,·and·<code·class="inline">Y</code>·are·called·variables.·Variables·must·start·with·a | 209 | the·code·<code·class="inline">N</code>,·<code·class="inline">X</code>,·and·<code·class="inline">Y</code>·are·called·variables.·Variables·must·start·with·a |
| 210 | capital·letter·(see·<a·href="../../doc/system/expressions.html">Variables</a>).·Examples·of | 210 | capital·letter·(see·<a·href="../../doc/system/expressions.html">Variables</a>).·Examples·of |
| 211 | variables·are·<code·class="inline">Number</code>,·<code·class="inline">ShoeSize</code>,·and·<code·class="inline">Age</code>.</p><h2·id="atoms"·class="section-heading"> | 211 | variables·are·<code·class="inline">Number</code>,·<code·class="inline">ShoeSize</code>,·and·<code·class="inline">Age</code>.</p><h2·id="atoms"·class="section-heading"> |
| 212 | ··<a·href="#atoms"·class="hover-link"> | 212 | ··<a·href="#atoms"·class="hover-link"> |
| 213 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 213 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 214 | ··</a> | 214 | ··</a> |
| 215 | ··<span·class="text">Atoms</span> | 215 | ··<span·class="text">Atoms</span> |
| 216 | </h2> | 216 | </h2> |
| 217 | <p>Atom·is·another·data·type·in·Erlang.·Atoms·start·with·a·small·letter·(see | 217 | <p>Atom·is·another·data·type·in·Erlang.·Atoms·start·with·a·small·letter·(see |
| 218 | <a·href="../../doc/system/data_types.html">Atom</a>),·for·example,·<code·class="inline">charles</code>,·<code·class="inline">centimeter</code>,·and | 218 | <a·href="../../doc/system/data_types.html">Atom</a>),·for·example,·<code·class="inline">charles</code>,·<code·class="inline">centimeter</code>,·and |
| 219 | <code·class="inline">inch</code>.·Atoms·are·simply·names,·nothing·else.·They·are·not·like·variables,·which | 219 | <code·class="inline">inch</code>.·Atoms·are·simply·names,·nothing·else.·They·are·not·like·variables,·which |
| 220 | can·have·a·value.</p><p>Enter·the·next·program·in·a·file·named·<code·class="inline">tut2.erl</code>).·It·can·be·useful·for | 220 | can·have·a·value.</p><p>Enter·the·next·program·in·a·file·named·<code·class="inline">tut2.erl</code>).·It·can·be·useful·for |
| 221 | converting·from·inches·to·centimeters·and·conversely:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 221 | converting·from·inches·to·centimeters·and·conversely:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="2947767494-1">(</span><span·class="ss">tut2</span><span·class="p"·data-group-id="2947767494-1">)</span><span·class="p">.</span><span·class="w"> |
| 222 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 222 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="2947767494-2">(</span><span·class="p"·data-group-id="2947767494-3">[</span><span·class="ss">convert</span><span·class="p">/</span><span·class="mi">2</span><span·class="p"·data-group-id="2947767494-3">]</span><span·class="p"·data-group-id="2947767494-2">)</span><span·class="p">.</span><span·class="w"> |
| 223 | </span><span·class="nf">convert</span><span·class="p"·data-group-id=" | 223 | </span><span·class="nf">convert</span><span·class="p"·data-group-id="2947767494-4">(</span><span·class="n">M</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">inch</span><span·class="p"·data-group-id="2947767494-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 224 | ····</span><span·class="n">M</span><span·class="w">·</span><span·class="o">/</span><span·class="w">·</span><span·class="mf">2.54</span><span·class="p">;</span><span·class="w"> | 224 | ····</span><span·class="n">M</span><span·class="w">·</span><span·class="o">/</span><span·class="w">·</span><span·class="mf">2.54</span><span·class="p">;</span><span·class="w"> |
| 225 | </span><span·class="nf">convert</span><span·class="p"·data-group-id=" | 225 | </span><span·class="nf">convert</span><span·class="p"·data-group-id="2947767494-5">(</span><span·class="n">N</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">centimeter</span><span·class="p"·data-group-id="2947767494-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 226 | ····</span><span·class="n">N</span><span·class="w">·</span><span·class="o">*</span><span·class="w">·</span><span·class="mf">2.54</span><span·class="p">.</span></code></pre><p>Compile:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">9>·</span><span·class="nf">c</span><span·class="p"·data-group-id=" | 226 | ····</span><span·class="n">N</span><span·class="w">·</span><span·class="o">*</span><span·class="w">·</span><span·class="mf">2.54</span><span·class="p">.</span></code></pre><p>Compile:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">9>·</span><span·class="nf">c</span><span·class="p"·data-group-id="5372022781-1">(</span><span·class="ss">tut2</span><span·class="p"·data-group-id="5372022781-1">)</span><span·class="p">.</span><span·class="w"> |
| 227 | </span><span·class="p"·data-group-id=" | 227 | </span><span·class="p"·data-group-id="5372022781-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="ss">tut2</span><span·class="p"·data-group-id="5372022781-2">}</span></code></pre><p>Test:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">[·...·truncated·by·diffoscope;·len:·292,·SHA:·56cb5ac5e113ac856df116afc779384c87b6574bc858a690a6f785dfd0dcaee2·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 228 | </span><span·class="mf">1.1811023622047243</span><span·class="gp·unselectable"> | 228 | </span><span·class="mf">1.1811023622047243</span><span·class="gp·unselectable"> |
| 229 | 11>·</span><span·class="nc">tut2</span><span·class="p">:</span><span·class="nf">convert</span><span·class="p"·data-group-id=" | 229 | 11>·</span><span·class="nc">tut2</span><span·class="p">:</span><span·class="nf">convert</span><span·class="p"·data-group-id="4305833564-2">(</span><span·class="mi">7</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">centimeter</span><span·class="p"·data-group-id="4305833564-2">)</span><span·class="p">.</span><span·class="w"> |
| 230 | </span><span·class="mf">17.78</span></code></pre><p>Notice·the·introduction·of·decimals·(floating·point·numbers)·without·any | 230 | </span><span·class="mf">17.78</span></code></pre><p>Notice·the·introduction·of·decimals·(floating·point·numbers)·without·any |
| 231 | explanation.·Hopefully·you·can·cope·with·that.</p><p>Let·us·see·what·happens·if·something·other·than·<code·class="inline">centimeter</code>·or·<code·class="inline">inch</code>·is | 231 | explanation.·Hopefully·you·can·cope·with·that.</p><p>Let·us·see·what·happens·if·something·other·than·<code·class="inline">centimeter</code>·or·<code·class="inline">inch</code>·is |
| 232 | entered·in·the·<code·class="inline">convert</code>·function:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">12>·</span><span·class="nc">tut2</span><span·class="p">:</span><span·class="nf">convert</span><span·class="p"·data-group-id=" | 232 | entered·in·the·<code·class="inline">convert</code>·function:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">12>·</span><span·class="nc">tut2</span><span·class="p">:</span><span·class="nf">convert</span><span·class="p"·data-group-id="6510434073-1">(</span><span·class="mi">3</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">miles</span><span·class="p"·data-group-id="6510434073-1">)</span><span·class="p">.</span><span·class="w"> |
| 233 | </span><span·class="gt">**·exception·error:·no·function·clause·matching·tut2:convert(3,miles)·(tut2.erl,·line·4)</span></code></pre><p>The·two·parts·of·the·<code·class="inline">convert</code>·function·are·called·its·clauses.·As·shown, | 233 | </span><span·class="gt">**·exception·error:·no·function·clause·matching·tut2:convert(3,miles)·(tut2.erl,·line·4)</span></code></pre><p>The·two·parts·of·the·<code·class="inline">convert</code>·function·are·called·its·clauses.·As·shown, |
| 234 | <code·class="inline">miles</code>·is·not·part·of·either·of·the·clauses.·The·Erlang·system·cannot·<em>match</em> | 234 | <code·class="inline">miles</code>·is·not·part·of·either·of·the·clauses.·The·Erlang·system·cannot·<em>match</em> |
| 235 | either·of·the·clauses·so·an·error·message·<code·class="inline">function_clause</code>·is·returned.·The | 235 | either·of·the·clauses·so·an·error·message·<code·class="inline">function_clause</code>·is·returned.·The |
| 236 | shell·formats·the·error·message·nicely,·but·the·error·tuple·is·saved·in·the | 236 | shell·formats·the·error·message·nicely,·but·the·error·tuple·is·saved·in·the |
| 237 | shell's·history·list·and·can·be·output·by·the·shell·command·<code·class="inline">v/1</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">13>·</span><span·class="nf">v</span><span·class="p"·data-group-id="4 | 237 | shell's·history·list·and·can·be·output·by·the·shell·command·<code·class="inline">v/1</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">13>·</span><span·class="nf">v</span><span·class="p"·data-group-id="4124661085-1">(</span><span·class="mi">12</span><span·class="p"·data-group-id="4124661085-1">)</span><span·class="p">.</span><span·class="w"> |
| 238 | </span><span·class="p"·data-group-id="4 | 238 | </span><span·class="p"·data-group-id="4124661085-2">{</span><span·class="ss">'EXIT'</span><span·class="p">,</span><span·class="p"·data-group-id="4124661085-3">{</span><span·class="ss">function_clause</span><span·class="p">,</span><span·class="p"·data-group-id="4124661085-4">[</span><spa[·...·truncated·by·diffoscope;·len:·37,·SHA:·ba830f29e1cdca34729ca0e093ee29ba12b693c1af33654ae545997700642b79·...·]-5">{</span><span·class="ss">tut2</span><span·class="p">,</span><span·class="ss">convert</span><span·class="p">,</span><span·class="w"> |
| 239 | ································</span><span·class="p"·data-group-id="4 | 239 | ································</span><span·class="p"·data-group-id="4124661085-6">[</span><span·class="mi">3</span><span·class="p">,</span><span·class="ss">miles</span><span·class="p"·data-group-id="4124661085-6">]</span><span·class="p">,</span><span·class="w"> |
| 240 | ································</span><span·class="p"·data-group-id="4 | 240 | ································</span><span·class="p"·data-group-id="4124661085-7">[</span><span·class="p"·data-group-id="4124661085-8">{</span><span·class="ss">file</span><span·class="p">,</span><span·class="s">"tut2.erl"</span><span·class="p"·data-group-id="4124661085-8">}</span><span·class="p">,</span><span·clas[·...·truncated·by·diffoscope;·len:·267,·SHA:·ff5be310b5089e3897d40e971d886b5f2ef30f68e068fecedc868e0df423d7c9·...·]-5">}</span><span·class="p">,</span><span·class="w"> |
| 241 | ··························</span><span·class="p"·data-group-id="4 | 241 | ··························</span><span·class="p"·data-group-id="4124661085-10">{</span><span·class="ss">erl_eval</span><span·class="p">,</span><span·class="ss">do_apply</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="w"> |
| 242 | ····································</span><span·class="p"·data-group-id="4530481602-11">[</span><span·class="p"·data-group-id="4530481602-12">{</span><span·class="ss">file</span><span·class="p">,</span><span·class="s">"erl_eval.erl"</span><span·class="p"·data-group-id="4530481602-12">}</span><span·class="p">,</span><span·class="p"·data-group-id="4530481602-13">{</span><span·class="ss">line</span><span·class="p">,</span><span·class="mi">677</span><span·class="p"·data-group-id="4530481602-13">}</span><span·class="p"·data-group-id="4530481602-11">]</span><span·class="p"·data-group-id="4530481602-10">}</span><span·class="p">,</span><span·class="w"> | ||
| 243 | ··························</span><span·class="p"·data-group-id="4 | 242 | ····································</span><span·class="p"·data-group-id="4124661085-11">[</span><span·class="p"·data-group-id="4124661085-12">{</span><span·class="ss">file</span><span·class="p">,</span><span·class="s">"erl_eval.erl"</span><span·class="p"·data-group-id="4[·...·truncated·by·diffoscope;·len:·331,·SHA:·5b9e8193fc0f52cb940a3154d1d336ac39479e30bc5e1fb73b8134ab8b8f4db8·...·]">}</span><span·class="p">,</span><span·class="w"> |
| 243 | ··························</span><span·class="p"·data-group-id="4124661085-14">{</span><span·class="ss">shell</span><span·class="p">,</span><span·class="ss">exprs</span><span·class="p">,</span><span·class="mi">7</span><span·class="p">,</span><span·class="p"·data-group-id="4124661085-15">[</span><span·class="p"·data-group-id="4124661085-16">{</span><span·class="ss">file</span><span·class="p">,</span><span·class="s">"shell.erl"</span><span·class="p"·data-group-id="4124661085-16">}</span><span·class="p">,</span><span·class="p"·data-group-id="4124661085-17">{</span><span·class="ss">line</span><span·class="p">,</span><span·class="mi">687</span><span·class="p"·data-group-id="4124661085-17">}</span><span·class="p"·data-group-id="4124661085-15">]</span><span·class="p"·data-group-id="4124661085-14">}</span><span·class="p">,</span><span·class="w"> | ||
| 244 | ··························</span><span·class="p"·data-group-id="4 | 244 | ··························</span><span·class="p"·data-group-id="4124661085-18">{</span><span·class="ss">shell</span><span·class="p">,</span><span·class="ss">eval_exprs</span><span·class="p">,</span><span·class="mi">7</span><span·class="p">,</span><span·class="p"·data-group-id="4124661085-19">[</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·490,·SHA:·2eb21944f077581dd3f3ea3f679eecc60ce2191f0833981627775d2d1d92e9a6·...·]-18">}</span><span·class="p">,</span><span·class="w"> |
| 245 | ··························</span><span·class="p"·data-group-id="4 | 245 | ··························</span><span·class="p"·data-group-id="4124661085-22">{</span><span·class="ss">shell</span><span·class="p">,</span><span·class="ss">eval_loop</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="w"> |
| 246 | ·································</span><span·class="p"·data-group-id="4 | 246 | ·································</span><span·class="p"·data-group-id="4124661085-23">[</span><span·class="p"·data-group-id="4124661085-24">{</span><span·class="ss">file</span><span·class="p">,</span><span·class="s">"shell.erl"</span><span·class="p"·data-group-id="4124661085-24">}</span><span·class="p">,</span><span·[·...·truncated·by·diffoscope;·len:·436,·SHA:·336be1025d1a29e657ad5bdd715514edabc90d451d5083a6ad6d7dafb9770845·...·]-2">}</span></code></pre><h2·id="tuples"·class="section-heading"> |
| 247 | ··<a·href="#tuples"·class="hover-link"> | 247 | ··<a·href="#tuples"·class="hover-link"> |
| 248 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 248 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 249 | ··</a> | 249 | ··</a> |
| 250 | ··<span·class="text">Tuples</span> | 250 | ··<span·class="text">Tuples</span> |
| 251 | </h2> | 251 | </h2> |
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| 123 | ··<a·href="#simple-debugging"·class="hover-link"> | 123 | ··<a·href="#simple-debugging"·class="hover-link"> |
| 124 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 124 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 125 | ··</a> | 125 | ··</a> |
| 126 | ··<span·class="text">Simple·Debugging</span> | 126 | ··<span·class="text">Simple·Debugging</span> |
| 127 | </h2> | 127 | </h2> |
| 128 | <p>The·<a·href="../../lib/stdlib-6.2.1/doc/html/sys.html"><code·class="inline">sys</code></a>·module·has·functions·for·simple·debugging·of·processes·implemented | 128 | <p>The·<a·href="../../lib/stdlib-6.2.1/doc/html/sys.html"><code·class="inline">sys</code></a>·module·has·functions·for·simple·debugging·of·processes·implemented |
| 129 | using·behaviours.·The·<code·class="inline">code_lock</code>·example·from | 129 | using·behaviours.·The·<code·class="inline">code_lock</code>·example·from |
| 130 | <a·href="statem.html#example">gen_statem·Behaviour</a>·is·used·to·illustrate·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Erlang</span><span·class="o">/</span><span·class="n">OTP</span><span·class="w">·</span><span·class="mi">27</span><span·class="w">·</span><span·class="p"·data-group-id=" | 130 | <a·href="statem.html#example">gen_statem·Behaviour</a>·is·used·to·illustrate·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Erlang</span><span·class="o">/</span><span·class="n">OTP</span><span·class="w">·</span><span·class="mi">27</span><span·class="w">·</span><span·class="p"·data-group-id="7202921575-1">[</span><span·class="ss">erts</span><span·class="o">-</span><span·class="mf">15.0</span><span·class="p"·data-group-id="7202921575-1">]</span><span·class="w">·</span><span·class="p"·data-group-id="7202921575-2">[</span><span·class="mi">64</spa[·...·truncated·by·diffoscope;·len:·1073,·SHA:·39979fc6891a22c6537408af4ba2d114e22c9ee946dacb670a65c3cf33abe285·...·]-6">]</span><span·class="w"> |
| 131 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V15</span><span·class="p">.</span><span·class="mi">0</span><span·class="w">·</span><span·class="p"·data-group-id=" | 131 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V15</span><span·class="p">.</span><span·class="mi">0</span><span·class="w">·</span><span·class="p"·data-group-id="7202921575-7">(</span><span·class="ss">press</span><span·class="w">·</span><span·class="n">Ctrl</span><span·class="o">+</span><span·class="n">G</span><span·class="w">·</span><span·class="ss">to</span><span·class="w">·</span><span·class="ss">abort</span><sp[·...·truncated·by·diffoscope;·len:·399,·SHA:·acd1a26294487b5acf3e9216c099e8b12ea38cd8aa509594d45dacd33c3fda9c·...·]-7">)</span><span·class="gp·unselectable"> |
| 132 | 1>·</span><span·class="nc">code_lock</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 132 | 1>·</span><span·class="nc">code_lock</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id="7202921575-9">(</span><span·class="p"·data-group-id="7202921575-10">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">4</span><span·cl[·...·truncated·by·diffoscope;·len:·87,·SHA:·e55ab9b9d44d29e63a13a9967e48dc7bcbf29b3181ff9fadd11c571012c560ef·...·]-9">)</span><span·class="p">.</span><span·class="w"> |
| 133 | </span><span·class="n">Lock</span><span·class="w"> | 133 | </span><span·class="n">Lock</span><span·class="w"> |
| 134 | </span><span·class="p"·data-group-id=" | 134 | </span><span·class="p"·data-group-id="7202921575-11">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.90</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="7202921575-11">}</span><span·class="gp·unselectable"> |
| 135 | 2>·</span><span·class="nc">sys</span><span·class="p">:</span><span·class="nf">statistics</span><span·class="p"·data-group-id=" | 135 | 2>·</span><span·class="nc">sys</span><span·class="p">:</span><span·class="nf">statistics</span><span·class="p"·data-group-id="7202921575-12">(</span><span·class="ss">code_lock</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">true</span><span·class="p"·data-group-id="7202921575-12">)</span><span·class="p">.</span><span·class="w"> |
| 136 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 136 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 137 | 3>·</span><span·class="nc">sys</span><span·class="p">:</span><span·class="nf">trace</span><span·class="p"·data-group-id=" | 137 | 3>·</span><span·class="nc">sys</span><span·class="p">:</span><span·class="nf">trace</span><span·class="p"·data-group-id="7202921575-13">(</span><span·class="ss">code_lock</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">true</span><span·class="p"·data-group-id="7202921575-13">)</span><span·class="p">.</span><span·class="w"> |
| 138 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 138 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 139 | 4>·</span><span·class="nc">code_lock</span><span·class="p">:</span><span·class="nf">button</span><span·class="p"·data-group-id=" | 139 | 4>·</span><span·class="nc">code_lock</span><span·class="p">:</span><span·class="nf">button</span><span·class="p"·data-group-id="7202921575-14">(</span><span·class="mi">1</span><span·class="p"·data-group-id="7202921575-14">)</span><span·class="p">.</span><span·class="w"> |
| 140 | </span><span·class="o">*</span><span·class="n">DBG</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">code_lock</span><span·class="w">·</span><span·class="k">receive</span><span·class="w">·</span><span·class="ss">cast</span><span·class="w">·</span><span·class="p"·data-group-id=" | 140 | </span><span·class="o">*</span><span·class="n">DBG</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">code_lock</span><span·class="w">·</span><span·class="k">receive</span><span·class="w">·</span><span·class="ss">cast</span><span·class="w">·</span><span·class="p"·data-group-id="7202921575-15">{</span><span·class="ss">button</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="7202921575-15">}</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">state</span><span·class="w">·</span><span·class="ss">locked</span><span·class="w"> |
| 141 | </span><span·class="ss">ok</span><span·class="w"> | 141 | </span><span·class="ss">ok</span><span·class="w"> |
| 142 | </span><span·class="o">*</span><span·class="n">DBG</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">code_lock</span><span·class="w">·</span><span·class="ss">consume</span><span·class="w">·</span><span·class="ss">cast</span><span·class="w">·</span><span·class="p"·data-group-id=" | 142 | </span><span·class="o">*</span><span·class="n">DBG</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">code_lock</span><span·class="w">·</span><span·class="ss">consume</span><span·class="w">·</span><span·class="ss">cast</span><span·class="w">·</span><span·class="p"·data-group-id="7202921575-16">{</span><span·class="ss">button</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="7202921575-16">}</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">state</span><span·class="w">·</span><span·class="ss">locked</span><span·class="gp·unselectable"> |
| 143 | 5>·</span><span·class="nc">code_lock</span><span·class="p">:</span><span·class="nf">button</span><span·class="p"·data-group-id=" | 143 | 5>·</span><span·class="nc">code_lock</span><span·class="p">:</span><span·class="nf">button</span><span·class="p"·data-group-id="7202921575-17">(</span><span·class="mi">2</span><span·class="p"·data-group-id="7202921575-17">)</span><span·class="p">.</span><span·class="w"> |
| 144 | </span><span·class="o">*</span><span·class="n">DBG</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">code_lock</span><span·class="w">·</span><span·class="k">receive</span><span·class="w">·</span><span·class="ss">cast</span><span·class="w">·</span><span·class="p"·data-group-id=" | 144 | </span><span·class="o">*</span><span·class="n">DBG</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">code_lock</span><span·class="w">·</span><span·class="k">receive</span><span·class="w">·</span><span·class="ss">cast</span><span·class="w">·</span><span·class="p"·data-group-id="7202921575-18">{</span><span·class="ss">button</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="7202921575-18">}</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">state</span><span·class="w">·</span><span·class="ss">locked</span><span·class="w"> |
| 145 | </span><span·class="ss">ok</span><span·class="w"> | 145 | </span><span·class="ss">ok</span><span·class="w"> |
| 146 | </span><span·class="o">*</span><span·class="n">DBG</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">code_lock</span><span·class="w">·</span><span·class="ss">consume</span><span·class="w">·</span><span·class="ss">cast</span><span·class="w">·</span><span·class="p"·data-group-id=" | 146 | </span><span·class="o">*</span><span·class="n">DBG</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">code_lock</span><span·class="w">·</span><span·class="ss">consume</span><span·class="w">·</span><span·class="ss">cast</span><span·class="w">·</span><span·class="p"·data-group-id="7202921575-19">{</span><span·class="ss">button</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="7202921575-19">}</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">state</span><span·class="w">·</span><span·class="ss">locked</span><span·class="gp·unselectable"> |
| 147 | 6>·</span><span·class="nc">code_lock</span><span·class="p">:</span><span·class="nf">button</span><span·class="p"·data-group-id=" | 147 | 6>·</span><span·class="nc">code_lock</span><span·class="p">:</span><span·class="nf">button</span><span·class="p"·data-group-id="7202921575-20">(</span><span·class="mi">3</span><span·class="p"·data-group-id="7202921575-20">)</span><span·class="p">.</span><span·class="w"> |
| 148 | </span><span·class="o">*</span><span·class="n">DBG</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">code_lock</span><span·class="w">·</span><span·class="k">receive</span><span·class="w">·</span><span·class="ss">cast</span><span·class="w">·</span><span·class="p"·data-group-id=" | 148 | </span><span·class="o">*</span><span·class="n">DBG</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">code_lock</span><span·class="w">·</span><span·class="k">receive</span><span·class="w">·</span><span·class="ss">cast</span><span·class="w">·</span><span·class="p"·data-group-id="7202921575-21">{</span><span·class="ss">button</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="7202921575-21">}</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">state</span><span·class="w">·</span><span·class="ss">locked</span><span·class="w"> |
| 149 | </span><span·class="ss">ok</span><span·class="w"> | 149 | </span><span·class="ss">ok</span><span·class="w"> |
| 150 | </span><span·class="o">*</span><span·class="n">DBG</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">code_lock</span><span·class="w">·</span><span·class="ss">consume</span><span·class="w">·</span><span·class="ss">cast</span><span·class="w">·</span><span·class="p"·data-group-id=" | 150 | </span><span·class="o">*</span><span·class="n">DBG</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">code_lock</span><span·class="w">·</span><span·class="ss">consume</span><span·class="w">·</span><span·class="ss">cast</span><span·class="w">·</span><span·class="p"·data-group-id="7202921575-22">{</span><span·class="ss">button</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="7202921575-22">}</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">state</span><span·class="w">·</span><span·class="ss">locked</span><span·class="gp·unselectable"> |
| 151 | 7>·</span><span·class="nc">code_lock</span><span·class="p">:</span><span·class="nf">button</span><span·class="p"·data-group-id=" | 151 | 7>·</span><span·class="nc">code_lock</span><span·class="p">:</span><span·class="nf">button</span><span·class="p"·data-group-id="7202921575-23">(</span><span·class="mi">4</span><span·class="p"·data-group-id="7202921575-23">)</span><span·class="p">.</span><span·class="w"> |
| 152 | </span><span·class="o">*</span><span·class="n">DBG</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">code_lock</span><span·class="w">·</span><span·class="k">receive</span><span·class="w">·</span><span·class="ss">cast</span><span·class="w">·</span><span·class="p"·data-group-id=" | 152 | </span><span·class="o">*</span><span·class="n">DBG</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">code_lock</span><span·class="w">·</span><span·class="k">receive</span><span·class="w">·</span><span·class="ss">cast</span><span·class="w">·</span><span·class="p"·data-group-id="7202921575-24">{</span><span·class="ss">button</span><span·class="p">,</span><span·class="mi">4</span><span·class="p"·data-group-id="7202921575-24">}</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">state</span><span·class="w">·</span><span·class="ss">locked</span><span·class="w"> |
| 153 | </span><span·class="ss">ok</span><span·class="w"> | 153 | </span><span·class="ss">ok</span><span·class="w"> |
| 154 | </span><span·class="n">Unlock</span><span·class="w"> | 154 | </span><span·class="n">Unlock</span><span·class="w"> |
| 155 | </span><span·class="o">*</span><span·class="n">DBG</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">code_lock</span><span·class="w">·</span><span·class="ss">consume</span><span·class="w">·</span><span·class="ss">cast</span><span·class="w">·</span><span·class="p"·data-group-id=" | 155 | </span><span·class="o">*</span><span·class="n">DBG</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">code_lock</span><span·class="w">·</span><span·class="ss">consume</span><span·class="w">·</span><span·class="ss">cast</span><span·class="w">·</span><span·class="p"·data-group-id="7202921575-25">{</span><span·class="ss">button</span><span·class="p">,</span><span·class="mi">4</span><span·class="p"·data-group-id="7202921575-25">}</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">state</span><span·class="w">·</span><span·class="ss">locked</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">open</span><span·class="w"> |
| 156 | </span><span·class="o">*</span><span·class="n">DBG</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">code_lock</span><span·class="w">·</span><span·class="nb">start_timer</span><span·class="w">·</span><span·class="p"·data-group-id=" | 156 | </span><span·class="o">*</span><span·class="n">DBG</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">code_lock</span><span·class="w">·</span><span·class="nb">start_timer</span><span·class="w">·</span><span·class="p"·data-group-id="7202921575-26">{</span><span·class="ss">state_timeout</span><span·class="p">,</span><span·class="mi">10000</span><span·class="p">,</span><span·class="ss">lock</span><span·class="p">,</span><span·class="p"·data-group-id="7202921575-27">[</span><span·class="[·...·truncated·by·diffoscope;·len:·82,·SHA:·8190a7cc3568495a50efac55c52d205759e4ae002224878fa2989b9b0d199a1b·...·]-26">}</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">state</span><span·class="w">·</span><span·class="ss">open</span><span·class="w"> |
| 157 | </span><span·class="o">*</span><span·class="n">DBG</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">code_lock</span><span·class="w">·</span><span·class="k">receive</span><span·class="w">·</span><span·class="ss">state_timeout</span><span·class="w">·</span><span·class="ss">lock</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">state</span><span·class="w">·</span><span·class="ss">open</span><span·class="w"> | 157 | </span><span·class="o">*</span><span·class="n">DBG</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">code_lock</span><span·class="w">·</span><span·class="k">receive</span><span·class="w">·</span><span·class="ss">state_timeout</span><span·class="w">·</span><span·class="ss">lock</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">state</span><span·class="w">·</span><span·class="ss">open</span><span·class="w"> |
| 158 | </span><span·class="n">Lock</span><span·class="w"> | 158 | </span><span·class="n">Lock</span><span·class="w"> |
| 159 | </span><span·class="o">*</span><span·class="n">DBG</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">code_lock</span><span·class="w">·</span><span·class="ss">consume</span><span·class="w">·</span><span·class="ss">state_timeout</span><span·class="w">·</span><span·class="ss">lock</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">state</span><span·class="w">·</span><span·class="ss">open</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">locked</span><span·class="gp·unselectable"> | 159 | </span><span·class="o">*</span><span·class="n">DBG</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">code_lock</span><span·class="w">·</span><span·class="ss">consume</span><span·class="w">·</span><span·class="ss">state_timeout</span><span·class="w">·</span><span·class="ss">lock</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">state</span><span·class="w">·</span><span·class="ss">open</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">locked</span><span·class="gp·unselectable"> |
| 160 | 8>·</span><span·class="nc">sys</span><span·class="p">:</span><span·class="nf">statistics</span><span·class="p"·data-group-id=" | 160 | 8>·</span><span·class="nc">sys</span><span·class="p">:</span><span·class="nf">statistics</span><span·class="p"·data-group-id="7202921575-28">(</span><span·class="ss">code_lock</span><span·class="p">,</span><span·class="w">·</span><span·class="nb">get</span><span·class="p"·data-group-id="7202921575-28">)</span><span·class="p">.</span><span·class="w"> |
| 161 | </span><span·class="p"·data-group-id="3238911889-29">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="3238911889-30">[</span><span·class="p"·data-group-id="3238911889-31">{</span><span·class="ss">start_time</span><span·class="p">,</span><span·class="p"·data-group-id="3238911889-32">{</span><span·class="p"·data-group-id="3238911889-33">{</span><span·class="mi">2024</span><span·class="p">,</span><span·class="mi">5</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="3238911889-33">}</span><span·class="p">,</span><span·class="p"·data-group-id="3238911889-34">{</span><span·class="mi">8</span><span·class="p">,</span><span·class="mi">11</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="3238911889-34">}</span><span·class="p"·data-group-id="3238911889-32">}</span><span·class="p"·data-group-id="3238911889-31">}</span><span·class="p">,</span><span·class="w"> | ||
| 162 | 161 | </span><span·class="p"·data-group-id="7202921575-29">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="7202921575-30">[</span><span·class="p"·data-group-id="7202921575-31">{</span><span·class="ss">start_time</span><sp[·...·truncated·by·diffoscope;·len:·663,·SHA:·f7216d5bfc121314c3b49329e699f079d28b6fe8769b44d4b64851deddf1f545·...·]">}</span><span·class="p">,</span><span·class="w"> | |
| 162 | ·····</span><span·class="p"·data-group-id="7202921575-35">{</span><span·class="ss">current_time</span><span·class="p">,</span><span·class="p"·data-group-id="7202921575-36">{</span><span·class="p"·data-group-id="7202921575-37">{</span><span·class="mi">2024</span><span·class="p">,</span><span·class="mi">5</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="7202921575-37">}</span><span·class="p">,</span><span·class="p"·data-group-id="7202921575-38">{</span><span·class="mi">8</span><span·class="p">,</span><span·class="mi">11</span><span·class="p">,</span><span·class="mi">48</span><span·class="p"·data-group-id="7202921575-38">}</span><span·class="p"·data-group-id="7202921575-36">}</span><span·class="p"·data-group-id="7202921575-35">}</span><span·class="p">,</span><span·class="w"> | ||
| 163 | ·····</span><span·class="p"·data-group-id=" | 163 | ·····</span><span·class="p"·data-group-id="7202921575-39">{</span><span·class="ss">reductions</span><span·class="p">,</span><span·class="mi">4098</span><span·class="p"·data-group-id="7202921575-39">}</span><span·class="p">,</span><span·class="w"> |
| 164 | ·····</span><span·class="p"·data-group-id=" | 164 | ·····</span><span·class="p"·data-group-id="7202921575-40">{</span><span·class="ss">messages_in</span><span·class="p">,</span><span·class="mi">5</span><span·class="p"·data-group-id="7202921575-40">}</span><span·class="p">,</span><span·class="w"> |
| 165 | ·····</span><span·class="p"·data-group-id=" | 165 | ·····</span><span·class="p"·data-group-id="7202921575-41">{</span><span·class="ss">messages_out</span><span·class="p">,</span><span·class="mi">0</span><span·class="p"·data-group-id="7202921575-41">}</span><span·class="p"·data-group-id="7202921575-30">]</span><span·class="p"·data-group-id="720292157[·...·truncated·by·diffoscope;·len:·1,·SHA:·ef2d127de37b942baad06145e54b0c619a1f22327b2ebbcfbec78f5564afe39d·...·]-29">}</span><span·class="gp·unselectable"> |
| 166 | 9>·</span><span·class="nc">sys</span><span·class="p">:</span><span·class="nf">statistics</span><span·class="p"·data-group-id=" | 166 | 9>·</span><span·class="nc">sys</span><span·class="p">:</span><span·class="nf">statistics</span><span·class="p"·data-group-id="7202921575-42">(</span><span·class="ss">code_lock</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">false</span><span·class="p"·data-group-id="7202921575-42">)</span><span·class="p">.</span><span·class="w"> |
| 167 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 167 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 168 | 10>·</span><span·class="nc">sys</span><span·class="p">:</span><span·class="nf">trace</span><span·class="p"·data-group-id=" | 168 | 10>·</span><span·class="nc">sys</span><span·class="p">:</span><span·class="nf">trace</span><span·class="p"·data-group-id="7202921575-43">(</span><span·class="ss">code_lock</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">false</span><span·class="p"·data-group-id="7202921575-43">)</span><span·class="p">.</span><span·class="w"> |
| 169 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 169 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 170 | 11>·</span><span·class="nc">sys</span><span·class="p">:</span><span·class="nf">get_status</span><span·class="p"·data-group-id=" | 170 | 11>·</span><span·class="nc">sys</span><span·class="p">:</span><span·class="nf">get_status</span><span·class="p"·data-group-id="7202921575-44">(</span><span·class="ss">code_lock</span><span·class="p"·data-group-id="7202921575-44">)</span><span·class="p">.</span><span·class="w"> |
| 171 | </span><span·class="p"·data-group-id=" | 171 | </span><span·class="p"·data-group-id="7202921575-45">{</span><span·class="ss">status</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.90</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="w"> |
| 172 | ········</span><span·class="p"·data-group-id=" | 172 | ········</span><span·class="p"·data-group-id="7202921575-46">{</span><span·class="ss">module</span><span·class="p">,</span><span·class="ss">gen_statem</span><span·class="p"·data-group-id="7202921575-46">}</span><span·class="p">,</span><span·class="w"> |
| 173 | ········</span><span·class="p"·data-group-id=" | 173 | ········</span><span·class="p"·data-group-id="7202921575-47">[</span><span·class="p"·data-group-id="7202921575-48">[</span><span·class="p"·data-group-id="7202921575-49">{</span><span·class="ss">'$initial_call'</span><span·class="p">,</span><span·class="p"·data-group-id="7202921575-50">{</span>[·...·truncated·by·diffoscope;·len:·229,·SHA:·e52143d49afc59b30c1e375bdf7d17f845ba4bb9955fb5774675ca43c10e0811·...·]-49">}</span><span·class="p">,</span><span·class="w"> |
| 174 | ··········</span><span·class="p"·data-group-id=" | 174 | ··········</span><span·class="p"·data-group-id="7202921575-51">{</span><span·class="ss">'$ancestors'</span><span·class="p">,</span><span·class="p"·data-group-id="7202921575-52">[</span><span·class="o"><</span><span·class="mf">0.88</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.87</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.70</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.65</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.69</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="w"> |
| 175 | ·························</span><span·class="o"><</span><span·class="mf">0.64</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="ss">kernel_sup</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.47</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id=" | 175 | ·························</span><span·class="o"><</span><span·class="mf">0.64</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="ss">kernel_sup</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.47</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="7202921575-52">]</span><span·class="p"·data-group-id="7202921575-51">}</span><span·class="p"·data-group-id="7202921575-48">]</span><span·class="p">,</span><span·class="w"> |
| 176 | ·········</span><span·class="ss">running</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.88</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="p"·data-group-id=" | 176 | ·········</span><span·class="ss">running</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.88</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="p"·data-group-id="7202921575-53">[</span><span·class="p"·data-group-id="7202921575-53">]</span><span·class="p">,</span><span·class="w"> |
| 177 | ·········</span><span·class="p"·data-group-id=" | 177 | ·········</span><span·class="p"·data-group-id="7202921575-54">[</span><span·class="p"·data-group-id="7202921575-55">{</span><span·class="ss">header</span><span·class="p">,</span><span·class="s">"Status·for·state·machine·code_lock"</span><span·class="p"·data-group-id="7202921575-55">}</span><span·class="p">,</span><span·class="w"> |
| 178 | ··········</span><span·class="p"·data-group-id=" | 178 | ··········</span><span·class="p"·data-group-id="7202921575-56">{</span><span·class="ss">data</span><span·class="p">,</span><span·class="p"·data-group-id="7202921575-57">[</span><span·class="p"·data-group-id="7202921575-58">{</span><span·class="s">"Status"</span><span·class="p">,</span><span·cl[·...·truncated·by·diffoscope;·len:·64,·SHA:·4f7d6b5696c4271536e911bed79697027d04c101594f8d7fd348c91836739f9c·...·]-58">}</span><span·class="p">,</span><span·class="w"> |
| 179 | ·················</span><span·class="p"·data-group-id=" | 179 | ·················</span><span·class="p"·data-group-id="7202921575-59">{</span><span·class="s">"Parent"</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.88</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="720292[·...·truncated·by·diffoscope;·len:·4,·SHA:·679b0ecadd205e5143506d637aaec6849987ae11c8c8280fb79f4d1080326eec·...·]-59">}</span><span·class="p">,</span><span·class="w"> |
| 180 | ·················</span><span·class="p"·data-group-id=" | 180 | ·················</span><span·class="p"·data-group-id="7202921575-60">{</span><span·class="s">"Modules"</span><span·class="p">,</span><span·class="p"·data-group-id="7202921575-61">[</span><span·class="ss">code_lock</span><span·class="p"·data-group-id="7202921575-61">]</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·15,·SHA:·940f2722b605cd285c9d0dde3324bd2083720936e282cc0b4f4d2ac262b28ac0·...·]-60">}</span><span·class="p">,</span><span·class="w"> |
| 181 | ·················</span><span·class="p"·data-group-id=" | 181 | ·················</span><span·class="p"·data-group-id="7202921575-62">{</span><span·class="s">"Time-outs"</span><span·class="p">,</span><span·class="p"·data-group-id="7202921575-63">{</span><span·class="mi">0</span><span·class="p">,</span><span·class="p"·data-group-id="7202921575-64">[</span><span·cl[·...·truncated·by·diffoscope;·len:·141,·SHA:·bc75f30090c7c9d610a03eb83f1f3b9c0f270729de6b4466b59b877e02ab9a31·...·]-62">}</span><span·class="p">,</span><span·class="w"> |
| 182 | ·················</span><span·class="p"·data-group-id=" | 182 | ·················</span><span·class="p"·data-group-id="7202921575-65">{</span><span·class="s">"Logged·Events"</span><span·class="p">,</span><span·class="p"·data-group-id="7202921575-66">[</span><span·class="p"·data-group-id="7202921575-66">]</span><span·class="p"·data-group-id="7202921575-65">}</span><span·class="p">,</span><span·class="w"> |
| 183 | ·················</span><span·class="p"·data-group-id=" | 183 | ·················</span><span·class="p"·data-group-id="7202921575-67">{</span><span·class="s">"Postponed"</span><span·class="p">,</span><span·class="p"·data-group-id="7202921575-68">[</span><span·class="p"·data-group-id="7202921575-68">]</span><span·class="p"·data-group-id="7202921575-67">}</span><sp[·...·truncated·by·diffoscope;·len:·92,·SHA:·b28e48f772e29a270048f45d390d14ee9a385c4ae9f31417c5fc619f3caf5809·...·]-56">}</span><span·class="p">,</span><span·class="w"> |
| 184 | ··········</span><span·class="p"·data-group-id=" | 184 | ··········</span><span·class="p"·data-group-id="7202921575-69">{</span><span·class="ss">data</span><span·class="p">,</span><span·class="p"·data-group-id="7202921575-70">[</span><span·class="p"·data-group-id="7202921575-71">{</span><span·class="s">"State"</span><span·class="p">,</span><span·class="w"> |
| 185 | ··················</span><span·class="p"·data-group-id=" | 185 | ··················</span><span·class="p"·data-group-id="7202921575-72">{</span><span·class="ss">locked</span><span·class="p">,</span><span·class="p"·data-group-id="7202921575-73">#{</span><span·class="ss">code</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·247,·SHA:·52c7e426a03cf3d287f8df744af0cf18ed64415ef84f8bf087b8b4975c405d31·...·]-74">]</span><span·class="p">,</span><span·class="w"> |
| 186 | ····························</span><span·class="nb">length</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">4</span><span·class="p">,</span><span·class="ss">buttons</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 186 | ····························</span><span·class="nb">length</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">4</span><span·class="p">,</span><span·class="ss">buttons</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="7202921575-75">[</span><span·class="p"·data-group-id="7202921575-75">]</span><span·class="p"·data-group-id="7202921575-73">}</span><span·class="p"·data-group-id="7202921575-72">}</span><span·class="p"·data-group-id="7202921575-71">}</span><span·class="p"·d[·...·truncated·by·diffoscope;·len:·240,·SHA:·54ece83f8e0bd3fa52b67e07bc231e04eea53a49c01a13481023c974261fc7b1·...·]-45">}</span></code></pre><h2·id="special-processes"·class="section-heading"> |
| 187 | ··<a·href="#special-processes"·class="hover-link"> | 187 | ··<a·href="#special-processes"·class="hover-link"> |
| 188 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 188 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 189 | ··</a> | 189 | ··</a> |
| 190 | ··<span·class="text">Special·Processes</span> | 190 | ··<span·class="text">Special·Processes</span> |
| 191 | </h2> | 191 | </h2> |
| 192 | <p>This·section·describes·how·to·write·a·process·that·complies·to·the·OTP·design | 192 | <p>This·section·describes·how·to·write·a·process·that·complies·to·the·OTP·design |
| 193 | principles,·without·using·a·standard·behaviour.·Such·a·process·is·to:</p><ul><li>Be·started·in·a·way·that·makes·the·process·fit·into·a·supervision·tree</li><li>Support·the·<code·class="inline">sys</code>·<a·href="spec_proc.html#debug">debug·facilities</a></li><li>Take·care·of·<a·href="spec_proc.html#msg">system·messages</a>.</li></ul><p>System·messages·are·messages·with·a·special·meaning,·used·in·the·supervision | 193 | principles,·without·using·a·standard·behaviour.·Such·a·process·is·to:</p><ul><li>Be·started·in·a·way·that·makes·the·process·fit·into·a·supervision·tree</li><li>Support·the·<code·class="inline">sys</code>·<a·href="spec_proc.html#debug">debug·facilities</a></li><li>Take·care·of·<a·href="spec_proc.html#msg">system·messages</a>.</li></ul><p>System·messages·are·messages·with·a·special·meaning,·used·in·the·supervision |
| Offset 198, 238 lines modified | Offset 198, 238 lines modified | ||
| 198 | ··<a·href="#example"·class="hover-link"> | 198 | ··<a·href="#example"·class="hover-link"> |
| 199 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 199 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 200 | ··</a> | 200 | ··</a> |
| 201 | ··<span·class="text">Example</span> | 201 | ··<span·class="text">Example</span> |
| 202 | </h3> | 202 | </h3> |
| 203 | <p>Here·follows·the·simple·server·from | 203 | <p>Here·follows·the·simple·server·from |
| 204 | <a·href="design_principles.html#ch1">Overview</a>, | 204 | <a·href="design_principles.html#ch1">Overview</a>, |
| 205 | implemented·using·<code·class="inline">sys</code>·and·<code·class="inline">proc_lib</code>·to·fit·into·a·supervision·tree:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 205 | implemented·using·<code·class="inline">sys</code>·and·<code·class="inline">proc_lib</code>·to·fit·into·a·supervision·tree:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="5502017921-1">(</span><span·class="ss">ch4</span><span·class="p"·data-group-id="5502017921-1">)</span><span·class="p">.</span><span·class="w"> |
| 206 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 206 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="5502017921-2">(</span><span·class="p"·data-group-id="5502017921-3">[</span><span·class="ss">start_link</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data-group-id="5502017921-3">]</span><span·class="p"·data-group-id="5502017921-2">)</span><span·class="p">.</span><span·class="w"> |
| 207 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 207 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="5502017921-4">(</span><span·class="p"·data-group-id="5502017921-5">[</span><span·class="ss">alloc</span><span·class="p">/</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">free</span><span·class="p">/</span><sp[·...·truncated·by·diffoscope;·len:·116,·SHA:·d9de6e0ecdb1773ed74500f54279b54346f66af697137daa927cba2946b22f34·...·]-4">)</span><span·class="p">.</span><span·class="w"> |
| 208 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 208 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="5502017921-6">(</span><span·class="p"·data-group-id="5502017921-7">[</span><span·class="ss">init</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id="5502017921-7">]</span><span·class="p"·data-group-id="5502017921-6">)</span><span·class="p">.</span><span·class="w"> |
| 209 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 209 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="5502017921-8">(</span><span·class="p"·data-group-id="5502017921-9">[</span><span·class="ss">system_continue</span><span·class="p">/</span><span·class="mi">3</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">system_terminate</span><span·class="p">/</span><span·class="mi">4</span><span·class="p">,</span><span·class="w"> |
| 210 | ·········</span><span·class="ss">write_debug</span><span·class="p">/</span><span·class="mi">3</span><span·class="p">,</span><span·class="w"> | 210 | ·········</span><span·class="ss">write_debug</span><span·class="p">/</span><span·class="mi">3</span><span·class="p">,</span><span·class="w"> |
| 211 | ·········</span><span·class="ss">system_get_state</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">system_replace_state</span><span·class="p">/</span><span·class="mi">2</span><span·class="p"·data-group-id=" | 211 | ·········</span><span·class="ss">system_get_state</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">system_replace_state</span><span·class="p">/</span><span·class="mi">2</span><span·class="p"·data-group-id="5502017921-9">]</span><span·class="p"·data-group-id="5502017921-8">)</span><span·class="p">.</span><span·class="w"> |
| 212 | </span><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 212 | </span><span·class="nf">start_link</span><span·class="p"·data-group-id="5502017921-10">(</span><span·class="p"·data-group-id="5502017921-10">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 213 | ····</span><span·class="nc">proc_lib</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 213 | ····</span><span·class="nc">proc_lib</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id="5502017921-11">(</span><span·class="ss">ch4</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">init</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5502017921-12">[</span><span·class="nf">self</span>[·...·truncated·by·diffoscope;·len:·203,·SHA:·f09369a42bd9c7656289cf4fa9b5ea4dddb9c122b4baa361d0955fe4a1538828·...·]-11">)</span><span·class="p">.</span><span·class="w"> |
| 214 | </span><span·class="nf">alloc</span><span·class="p"·data-group-id=" | 214 | </span><span·class="nf">alloc</span><span·class="p"·data-group-id="5502017921-14">(</span><span·class="p"·data-group-id="5502017921-14">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 215 | ····</span><span·class="ss">ch4</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 215 | ····</span><span·class="ss">ch4</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="5502017921-15">{</span><span·class="nf">self</span><span·class="p"·data-group-id="5502017921-16">(</span><span·class="p"·data-group-id="5502017921-16">)</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">alloc</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·21,·SHA:·6d0c56d68397713ddb8cc580ae6f808d483bd05e45919eb8f806156eab320de4·...·]-15">}</span><span·class="p">,</span><span·class="w"> |
| 216 | ····</span><span·class="k">receive</span><span·class="w"> | 216 | ····</span><span·class="k">receive</span><span·class="w"> |
| 217 | ········</span><span·class="p"·data-group-id=" | 217 | ········</span><span·class="p"·data-group-id="5502017921-17">{</span><span·class="ss">ch4</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Res</span><span·class="p"·data-group-id="5502017921-17">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 218 | ············</span><span·class="n">Res</span><span·class="w"> | 218 | ············</span><span·class="n">Res</span><span·class="w"> |
| 219 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 219 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 220 | </span><span·class="nf">free</span><span·class="p"·data-group-id=" | 220 | </span><span·class="nf">free</span><span·class="p"·data-group-id="5502017921-18">(</span><span·class="n">Ch</span><span·class="p"·data-group-id="5502017921-18">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 221 | ····</span><span·class="ss">ch4</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 221 | ····</span><span·class="ss">ch4</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="5502017921-19">{</span><span·class="ss">free</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ch</span><span·class="p"·data-group-id="5502017921-19">}</span><span·class="p">,</span><span·class="w"> |
| 222 | ····</span><span·class="ss">ok</span><span·class="p">.</span><span·class="w"> | 222 | ····</span><span·class="ss">ok</span><span·class="p">.</span><span·class="w"> |
| 223 | </span><span·class="nf">init</span><span·class="p"·data-group-id=" | 223 | </span><span·class="nf">init</span><span·class="p"·data-group-id="5502017921-20">(</span><span·class="n">Parent</span><span·class="p"·data-group-id="5502017921-20">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 224 | ····</span><span·class="nf">register</span><span·class="p"·data-group-id=" | 224 | ····</span><span·class="nf">register</span><span·class="p"·data-group-id="5502017921-21">(</span><span·class="ss">ch4</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="5502017921-22">(</span><span·class="p"·data-group-id="5502017921-22">)</span><span·class="p"·data-g[·...·truncated·by·diffoscope;·len:·19,·SHA:·cc578901207c671fa689bb12ed44f234c35a9302e9a7261ff27daa4255b16130·...·]-21">)</span><span·class="p">,</span><span·class="w"> |
| 225 | ····</span><span·class="n">Chs</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">channels</span><span·class="p"·data-group-id=" | 225 | ····</span><span·class="n">Chs</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">channels</span><span·class="p"·data-group-id="5502017921-23">(</span><span·class="p"·data-group-id="5502017921-23">)</span><span·class="p">,</span><span·class="w"> |
| 226 | ····</span><span·class="n">Deb</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sys</span><span·class="p">:</span><span·class="nf">debug_options</span><span·class="p"·data-group-id=" | 226 | ····</span><span·class="n">Deb</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sys</span><span·class="p">:</span><span·class="nf">debug_options</span><span·class="p"·data-group-id="5502017921-24">(</span><span·class="p"·data-group-id="5502017921-25">[</span><span·class="p"·data-group-id="5502017921-25">]</span><span·class="p"·data-group-id="5502017921-24">)</span><span·class="p">,</span><span·class="w"> |
| 227 | ····</span><span·class="nc">proc_lib</span><span·class="p">:</span><span·class="nf">init_ack</span><span·class="p"·data-group-id=" | 227 | ····</span><span·class="nc">proc_lib</span><span·class="p">:</span><span·class="nf">init_ack</span><span·class="p"·data-group-id="5502017921-26">(</span><span·class="n">Parent</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5502017921-27">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">self</span>[·...·truncated·by·diffoscope;·len:·203,·SHA:·0b432d3fea79c9ed8584e46605a23fe43cde6c0fca82a69afcc110ac148892e4·...·]-26">)</span><span·class="p">,</span><span·class="w"> |
| 228 | ····</span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 228 | ····</span><span·class="nf">loop</span><span·class="p"·data-group-id="5502017921-29">(</span><span·class="n">Chs</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Parent</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Deb</span><span·class="p"·data-group-id="5502017921-29">)</span><span·class="p">.</span><span·class="w"> |
| 229 | </span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 229 | </span><span·class="nf">loop</span><span·class="p"·data-group-id="5502017921-30">(</span><span·class="n">Chs</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Parent</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Deb</span><span·class="p"·data-group-id="5502017921-30">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 230 | ····</span><span·class="k">receive</span><span·class="w"> | 230 | ····</span><span·class="k">receive</span><span·class="w"> |
| 231 | ········</span><span·class="p"·data-group-id=" | 231 | ········</span><span·class="p"·data-group-id="5502017921-31">{</span><span·class="n">From</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">alloc</span><span·class="p"·data-group-id="5502017921-31">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 232 | ············</span><span·class="n">Deb2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sys</span><span·class="p">:</span><span·class="nf">handle_debug</span><span·class="p"·data-group-id=" | 232 | ············</span><span·class="n">Deb2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sys</span><span·class="p">:</span><span·class="nf">handle_debug</span><span·class="p"·data-group-id="5502017921-32">(</span><span·class="n">Deb</span><span·class="p">,</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="nc">ch4</span><span·class="p">:</span><span·class="ss">write_debug</span><span·class="p">/</span><span·class="mi">3</span><span·class="p">,</span><span·class="w"> |
| 233 | ····································</span><span·class="ss">ch4</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id=" | 233 | ····································</span><span·class="ss">ch4</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5502017921-33">{</span><span·class="ss">in</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">alloc</span><span·class="p">,</span><span·class="w">·</span><span·class="n">From</span><span·class="p"·data-group-id="5502017921-33">}</span><[·...·truncated·by·diffoscope;·len:·40,·SHA:·220aa41dafa98062a549d9268b1f7d2bdc52019f74be653911ee04c3a6635312·...·]-32">)</span><span·class="p">,</span><span·class="w"> |
| 234 | ············</span><span·class="p"·data-group-id=" | 234 | ············</span><span·class="p"·data-group-id="5502017921-34">{</span><span·class="n">Ch</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Chs2</span><span·class="p"·data-group-id="5502017921-34">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·c[·...·truncated·by·diffoscope;·len:·143,·SHA:·6499f558f1cad075299abf8bc1b408cd692e277daa2a057fb8f122e227a2b0c2·...·]-35">)</span><span·class="p">,</span><span·class="w"> |
| 235 | ············</span><span·class="n">From</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 235 | ············</span><span·class="n">From</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="5502017921-36">{</span><span·class="ss">ch4</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ch</span><span·class="p"·data-group-id="5502017921-36">}</span><span·class="p">,</span><span·class="w"> |
| 236 | ············</span><span·class="n">Deb3</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sys</span><span·class="p">:</span><span·class="nf">handle_debug</span><span·class="p"·data-group-id=" | 236 | ············</span><span·class="n">Deb3</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sys</span><span·class="p">:</span><span·class="nf">handle_debug</span><span·class="p"·data-group-id="5502017921-37">(</span><span·class="n">Deb2</span><span·class="p">,</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="nc">ch4</span><span·class="p">:</span><span·class="ss">write_debug</span><span·class="p">/</span><span·class="mi">3</span><span·class="p">,</span><span·class="w"> |
| 237 | ····································</span><span·class="ss">ch4</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id=" | 237 | ····································</span><span·class="ss">ch4</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5502017921-38">{</span><span·class="ss">out</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5502017921-39">{</span><span·class="ss">ch4</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ch</span><spa[·...·truncated·by·diffoscope;·len:·220,·SHA:·8d8373d3f4377215eaa36c2d64c37778094f89a17fb92ce7f5c599ac0acc7457·...·]-37">)</span><span·class="p">,</span><span·class="w"> |
| 238 | ············</span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 238 | ············</span><span·class="nf">loop</span><span·class="p"·data-group-id="5502017921-40">(</span><span·class="n">Chs2</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Parent</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Deb3</span><span·class="p"·data-group-id="5502017921-40">)</span><span·class="p">;</span><span·class="w"> |
| 239 | ········</span><span·class="p"·data-group-id=" | 239 | ········</span><span·class="p"·data-group-id="5502017921-41">{</span><span·class="ss">free</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ch</span><span·class="p"·data-group-id="5502017921-41">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 240 | ············</span><span·class="n">Deb2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sys</span><span·class="p">:</span><span·class="nf">handle_debug</span><span·class="p"·data-group-id=" | 240 | ············</span><span·class="n">Deb2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sys</span><span·class="p">:</span><span·class="nf">handle_debug</span><span·class="p"·data-group-id="5502017921-42">(</span><span·class="n">Deb</span><span·class="p">,</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="nc">ch4</span><span·class="p">:</span><span·class="ss">write_debug</span><span·class="p">/</span><span·class="mi">3</span><span·class="p">,</span><span·class="w"> |
| 241 | ····································</span><span·class="ss">ch4</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id=" | 241 | ····································</span><span·class="ss">ch4</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5502017921-43">{</span><span·class="ss">in</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5502017921-44">{</span><span·class="ss">free</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ch</span><spa[·...·truncated·by·diffoscope;·len:·145,·SHA:·5a459660a4da0aec5e2dbfc5eefe8153d7bfbe261a5ccdf14587c30bb00b600e·...·]-42">)</span><span·class="p">,</span><span·class="w"> |
| 242 | ············</span><span·class="n">Chs2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">free</span><span·class="p"·data-group-id=" | 242 | ············</span><span·class="n">Chs2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">free</span><span·class="p"·data-group-id="5502017921-45">(</span><span·class="n">Ch</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Chs</span><span·class="p"·data-group-id="5502017921-45">)</span><span·class="p">,</span><span·class="w"> |
| 243 | ············</span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 243 | ············</span><span·class="nf">loop</span><span·class="p"·data-group-id="5502017921-46">(</span><span·class="n">Chs2</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Parent</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Deb2</span><span·class="p"·data-group-id="5502017921-46">)</span><span·class="p">;</span><span·class="w"> |
| 244 | ········</span><span·class="p"·data-group-id=" | 244 | ········</span><span·class="p"·data-group-id="5502017921-47">{</span><span·class="ss">system</span><span·class="p">,</span><span·class="w">·</span><span·class="n">From</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Request</span><span·class="p"·data-group-id="5502017921-47">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
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| Offset 124, 15 lines modified | Offset 124, 15 lines modified | ||
| 124 | </h2> | 124 | </h2> |
| 125 | <p>Established·Automata·Theory·does·not·deal·much·with·how·a·<em>state·transition</em> | 125 | <p>Established·Automata·Theory·does·not·deal·much·with·how·a·<em>state·transition</em> |
| 126 | is·triggered,·but·assumes·that·the·output·is·a·function·of·the·input | 126 | is·triggered,·but·assumes·that·the·output·is·a·function·of·the·input |
| 127 | (and·the·state)·and·that·they·are·some·kind·of·values.</p><p>For·an·Event-Driven·State·Machine,·the·input·is·an·<em>event</em>·that·triggers | 127 | (and·the·state)·and·that·they·are·some·kind·of·values.</p><p>For·an·Event-Driven·State·Machine,·the·input·is·an·<em>event</em>·that·triggers |
| 128 | a·<em>state·transition</em>·and·the·output·is·actions·executed·during | 128 | a·<em>state·transition</em>·and·the·output·is·actions·executed·during |
| 129 | the·<em>state·transition</em>.··Analogously·to·the·mathematical·model | 129 | the·<em>state·transition</em>.··Analogously·to·the·mathematical·model |
| 130 | of·a·Finite·State·Machine,·it·can·be·described·as·a·set·of·relations | 130 | of·a·Finite·State·Machine,·it·can·be·described·as·a·set·of·relations |
| 131 | of·the·following·form:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">State</span><span·class="p"·data-group-id="9 | 131 | of·the·following·form:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">State</span><span·class="p"·data-group-id="9177187831-1">(</span><span·class="n">S</span><span·class="p"·data-group-id="9177187831-1">)</span><span·class="w">·</span><span·class="ss">x</span><span·class="w">·</span><span·class="n">Event</span><span·class="p"·data-group-id="9177187831-2">(</span><spa[·...·truncated·by·diffoscope;·len:·532,·SHA:·40574d4849dcb645a47aab0e3adf744b1b61d172177b26047ec7050dfa948bac·...·]1-4">)</span></code></pre><p>These·relations·are·interpreted·as·follows:·if·we·are·in·state·<code·class="inline">S</code>, |
| 132 | and·event·<code·class="inline">E</code>·occurs,·we·are·to·perform·actions·<code·class="inline">A</code>,·and·make·a·transition | 132 | and·event·<code·class="inline">E</code>·occurs,·we·are·to·perform·actions·<code·class="inline">A</code>,·and·make·a·transition |
| 133 | to·state·<code·class="inline">S'</code>.··Notice·that·<code·class="inline">S'</code>·can·be·equal·to·<code·class="inline">S</code>, | 133 | to·state·<code·class="inline">S'</code>.··Notice·that·<code·class="inline">S'</code>·can·be·equal·to·<code·class="inline">S</code>, |
| 134 | and·that·<code·class="inline">A</code>·can·be·empty.</p><p>In·<code·class="inline">gen_statem</code>·we·define·a·<em>state·change</em>·as·a·<em>state·transition</em>·in·which·the | 134 | and·that·<code·class="inline">A</code>·can·be·empty.</p><p>In·<code·class="inline">gen_statem</code>·we·define·a·<em>state·change</em>·as·a·<em>state·transition</em>·in·which·the |
| 135 | new·state·<code·class="inline">S'</code>·is·different·from·the·current·state·<code·class="inline">S</code>,·where·"different"·means | 135 | new·state·<code·class="inline">S'</code>·is·different·from·the·current·state·<code·class="inline">S</code>,·where·"different"·means |
| 136 | Erlang's·strict·inequality:·<code·class="inline">=/=</code>·also·known·as·"does·not·match".·<code·class="inline">gen_statem</code> | 136 | Erlang's·strict·inequality:·<code·class="inline">=/=</code>·also·known·as·"does·not·match".·<code·class="inline">gen_statem</code> |
| 137 | does·more·things·during·<em>state·changes</em>·than·during·other·<em>state·transitions</em>.</p><p>As·<code·class="inline">A</code>·and·<code·class="inline">S'</code>·depend·only·on·<code·class="inline">S</code>·and·<code·class="inline">E</code>,·the·kind·of·state·machine·described | 137 | does·more·things·during·<em>state·changes</em>·than·during·other·<em>state·transitions</em>.</p><p>As·<code·class="inline">A</code>·and·<code·class="inline">S'</code>·depend·only·on·<code·class="inline">S</code>·and·<code·class="inline">E</code>,·the·kind·of·state·machine·described |
| 138 | here·is·a·Mealy·machine·(see,·for·example,·the·Wikipedia·article | 138 | here·is·a·Mealy·machine·(see,·for·example,·the·Wikipedia·article |
| Offset 405, 20 lines modified | Offset 405, 20 lines modified | ||
| 405 | ··</a> | 405 | ··</a> |
| 406 | ··<span·class="text">State·Enter·Calls</span> | 406 | ··<span·class="text">State·Enter·Calls</span> |
| 407 | </h2> | 407 | </h2> |
| 408 | <p>The·<code·class="inline">gen_statem</code>·behaviour·can,·if·this·is·enabled,·regardless·of·<em>callback | 408 | <p>The·<code·class="inline">gen_statem</code>·behaviour·can,·if·this·is·enabled,·regardless·of·<em>callback |
| 409 | mode</em>,·automatically·call·the·<a·href="../../lib/stdlib-6.2.1/doc/html/gen_statem.html#t:state_enter/0"><em>state·callback</em></a> | 409 | mode</em>,·automatically·call·the·<a·href="../../lib/stdlib-6.2.1/doc/html/gen_statem.html#t:state_enter/0"><em>state·callback</em></a> |
| 410 | with·special·arguments·whenever·the·state·changes,·so·you·can·write | 410 | with·special·arguments·whenever·the·state·changes,·so·you·can·write |
| 411 | state·enter·actions·near·the·rest·of·the·<em>state·transition</em>·rules. | 411 | state·enter·actions·near·the·rest·of·the·<em>state·transition</em>·rules. |
| 412 | It·typically·looks·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">StateName</span><span·class="p"·data-group-id="2 | 412 | It·typically·looks·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">StateName</span><span·class="p"·data-group-id="2966451097-1">(</span><span·class="ss">enter</span><span·class="p">,</span><span·class="w">·</span><span·class="n">OldState</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="2966451097-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 413 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="ss">code</span><span·class="w">·</span><span·class="ss">for</span><span·class="w">·</span><span·class="ss">state</span><span·class="w">·</span><span·class="ss">enter</span><span·class="w">·</span><span·class="ss">actions</span><span·class="w">·</span><span·class="ss">here</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 413 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="ss">code</span><span·class="w">·</span><span·class="ss">for</span><span·class="w">·</span><span·class="ss">state</span><span·class="w">·</span><span·class="ss">enter</span><span·class="w">·</span><span·class="ss">actions</span><span·class="w">·</span><span·class="ss">here</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 414 | ····</span><span·class="p"·data-group-id="2 | 414 | ····</span><span·class="p"·data-group-id="2966451097-2">{</span><span·class="ss">keep_state</span><span·class="p">,</span><span·class="w">·</span><span·class="n">NewData</span><span·class="p"·data-group-id="2966451097-2">}</span><span·class="p">;</span><span·class="w"> |
| 415 | </span><span·class="n">StateName</span><span·class="p"·data-group-id="2 | 415 | </span><span·class="n">StateName</span><span·class="p"·data-group-id="2966451097-3">(</span><span·class="n">EventType</span><span·class="p">,</span><span·class="w">·</span><span·class="n">EventContent</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="2966451097-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 416 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="ss">code</span><span·class="w">·</span><span·class="ss">for</span><span·class="w">·</span><span·class="ss">actions</span><span·class="w">·</span><span·class="ss">here</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 416 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="ss">code</span><span·class="w">·</span><span·class="ss">for</span><span·class="w">·</span><span·class="ss">actions</span><span·class="w">·</span><span·class="ss">here</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 417 | ····</span><span·class="p"·data-group-id="2 | 417 | ····</span><span·class="p"·data-group-id="2966451097-4">{</span><span·class="ss">next_state</span><span·class="p">,</span><span·class="w">·</span><span·class="n">NewStateName</span><span·class="p">,</span><span·class="w">·</span><span·class="n">NewData</span><span·class="p"·data-group-id="296645109[·...·truncated·by·diffoscope;·len:·1,·SHA:·7902699be42c8a8e46fbbb4501726517e86b22c56a189f7625a6da49081b2451·...·]-4">}</span><span·class="p">.</span></code></pre><p>Since·the·<em>state·enter·call</em>·is·not·an·event·there·are·restrictions·on·the |
| 418 | allowed·return·value·and·state·<a·href="#transition-actions"><em>transition·actions</em></a>. | 418 | allowed·return·value·and·state·<a·href="#transition-actions"><em>transition·actions</em></a>. |
| 419 | You·must·not·change·the·state,·<a·href="#postponing-events">postpone</a>·this·non-event, | 419 | You·must·not·change·the·state,·<a·href="#postponing-events">postpone</a>·this·non-event, |
| 420 | <a·href="#inserted-events">insert·any·events</a>,·or·change·the | 420 | <a·href="#inserted-events">insert·any·events</a>,·or·change·the |
| 421 | <a·href="#callback-module"><em>callback·module</em></a>.</p><p>The·first·state·that·is·entered·after·<a·href="../../lib/stdlib-6.2.1/doc/html/gen_statem.html#c:init/1"><code·class="inline">gen_statem:init/1</code></a>·will·get | 421 | <a·href="#callback-module"><em>callback·module</em></a>.</p><p>The·first·state·that·is·entered·after·<a·href="../../lib/stdlib-6.2.1/doc/html/gen_statem.html#c:init/1"><code·class="inline">gen_statem:init/1</code></a>·will·get |
| 422 | a·<em>state·enter·call</em>·with·<code·class="inline">OldState</code>·equal·to·the·current·state.</p><p>You·may·repeat·the·<em>state·enter·call</em>·using·the·<code·class="inline">{repeat_state,...}</code>·return | 422 | a·<em>state·enter·call</em>·with·<code·class="inline">OldState</code>·equal·to·the·current·state.</p><p>You·may·repeat·the·<em>state·enter·call</em>·using·the·<code·class="inline">{repeat_state,...}</code>·return |
| 423 | value·from·the·<a·href="#state-callback"><em>state·callback</em></a>.·In·this·case | 423 | value·from·the·<a·href="#state-callback"><em>state·callback</em></a>.·In·this·case |
| 424 | <code·class="inline">OldState</code>·will·also·be·equal·to·the·current·state.</p><p>Depending·on·how·your·state·machine·is·specified,·this·can·be·a·very·useful | 424 | <code·class="inline">OldState</code>·will·also·be·equal·to·the·current·state.</p><p>Depending·on·how·your·state·machine·is·specified,·this·can·be·a·very·useful |
| Offset 499, 72 lines modified | Offset 499, 72 lines modified | ||
| 499 | ····locked······-->·check_code·:·{button, Button}\n* Collect·Buttons | 499 | ····locked······-->·check_code·:·{button, Button}\n* Collect·Buttons |
| 500 | ····check_code··-->·locked·····:·Incorrect·code | 500 | ····check_code··-->·locked·····:·Incorrect·code |
| 501 | ····check_code··-->·open·······:·Correct·code\n* do_unlock()\n* Clear·Buttons\n* Set·state_timeout·10·s | 501 | ····check_code··-->·open·······:·Correct·code\n* do_unlock()\n* Clear·Buttons\n* Set·state_timeout·10·s |
| 502 | ····open········-->·open···:·{button, Digit} | 502 | ····open········-->·open···:·{button, Digit} |
| 503 | ····open········-->·locked·:·state_timeout\n* do_lock()</code></pre><p>This·code·lock·state·machine·can·be·implemented·using·<a·href="../../lib/stdlib-6.2.1/doc/html/gen_statem.html"><code·class="inline">gen_statem</code></a>·with | 503 | ····open········-->·locked·:·state_timeout\n* do_lock()</code></pre><p>This·code·lock·state·machine·can·be·implemented·using·<a·href="../../lib/stdlib-6.2.1/doc/html/gen_statem.html"><code·class="inline">gen_statem</code></a>·with |
| 504 | the·following·<em>callback·module</em>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 504 | the·following·<em>callback·module</em>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="0957047820-1">(</span><span·class="ss">code_lock</span><span·class="p"·data-group-id="0957047820-1">)</span><span·class="p">.</span><span·class="w"> |
| 505 | </span><span·class="p">-</span><span·class="na">behaviour</span><span·class="p"·data-group-id=" | 505 | </span><span·class="p">-</span><span·class="na">behaviour</span><span·class="p"·data-group-id="0957047820-2">(</span><span·class="ss">gen_statem</span><span·class="p"·data-group-id="0957047820-2">)</span><span·class="p">.</span><span·class="w"> |
| 506 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id=" | 506 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="0957047820-3">(</span><span·class="n">NAME</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">code_lock</span><span·class="p"·data-group-id="0957047820-3">)</span><span·class="p">.</span><span·class="w"> |
| 507 | </span><span·class="w"> | 507 | </span><span·class="w"> |
| 508 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 508 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="0957047820-4">(</span><span·class="p"·data-group-id="0957047820-5">[</span><span·class="ss">start_link</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id="0957047820-5">]</span><span·class="p"·data-group-id="0957047820-4">)</span><span·class="p">.</span><span·class="w"> |
| 509 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 509 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="0957047820-6">(</span><span·class="p"·data-group-id="0957047820-7">[</span><span·class="ss">button</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id="0957047820-7">]</span><span·class="p"·data-group-id="0957047820-6">)</span><span·class="p">.</span><span·class="w"> |
| 510 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 510 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="0957047820-8">(</span><span·class="p"·data-group-id="0957047820-9">[</span><span·class="ss">init</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="ss">callback_mode</span><span·class="p">/</span><span·class="mi">0<[·...·truncated·by·diffoscope;·len:·206,·SHA:·484f06b0748e5bdc8746b378a7e5f0a7305f196fdb97cd6dca4272f6eece9b19·...·]-8">)</span><span·class="p">.</span><span·class="w"> |
| 511 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 511 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="0957047820-10">(</span><span·class="p"·data-group-id="0957047820-11">[</span><span·class="ss">locked</span><span·class="p">/</span><span·class="mi">3</span><span·class="p">,</span><span·class="ss">open</span><span·class="p">/</span><span·class="mi">3</span[·...·truncated·by·diffoscope;·len:·96,·SHA:·fce8d890602fc42a817e4b8158a06a105748cb28c15172986c4a4ac3a3f69992·...·]-10">)</span><span·class="p">.</span><span·class="w"> |
| 512 | </span><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 512 | </span><span·class="nf">start_link</span><span·class="p"·data-group-id="0957047820-12">(</span><span·class="n">Code</span><span·class="p"·data-group-id="0957047820-12">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 513 | ····</span><span·class="nc">gen_statem</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 513 | ····</span><span·class="nc">gen_statem</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id="0957047820-13">(</span><span·class="p"·data-group-id="0957047820-14">{</span><span·class="ss">local</span><span·class="p">,</span><span·class="o">?</span><span·class="n">NAME</span><span·class="p"·data-group-id="0957047820-14">}</span><span·class="p">,</sp[·...·truncated·by·diffoscope;·len:·352,·SHA:·5d12fd0ab49b2592da1f90df83c966fac24d507202b6c9ffbf8facae0723bd13·...·]-13">)</span><span·class="p">.</span><span·class="w"> |
| 514 | </span><span·class="nf">button</span><span·class="p"·data-group-id=" | 514 | </span><span·class="nf">button</span><span·class="p"·data-group-id="0957047820-16">(</span><span·class="n">Button</span><span·class="p"·data-group-id="0957047820-16">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 515 | ····</span><span·class="nc">gen_statem</span><span·class="p">:</span><span·class="nf">cast</span><span·class="p"·data-group-id=" | 515 | ····</span><span·class="nc">gen_statem</span><span·class="p">:</span><span·class="nf">cast</span><span·class="p"·data-group-id="0957047820-17">(</span><span·class="o">?</span><span·class="n">NAME</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0957047820-18">{</span><span·class="ss">button</span><span·class="p">,</span><span·class="n">Button</sp[·...·truncated·by·diffoscope;·len:·98,·SHA:·9290dc33a0982dc9c83daf3ceed198e56a46d0dea38eac7a1d900496ece78437·...·]-17">)</span><span·class="p">.</span><span·class="w"> |
| 516 | </span><span·class="nf">init</span><span·class="p"·data-group-id=" | 516 | </span><span·class="nf">init</span><span·class="p"·data-group-id="0957047820-19">(</span><span·class="n">Code</span><span·class="p"·data-group-id="0957047820-19">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 517 | ····</span><span·class="nf">do_lock</span><span·class="p"·data-group-id=" | 517 | ····</span><span·class="nf">do_lock</span><span·class="p"·data-group-id="0957047820-20">(</span><span·class="p"·data-group-id="0957047820-20">)</span><span·class="p">,</span><span·class="w"> |
| 518 | ····</span><span·class="n">Data</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 518 | ····</span><span·class="n">Data</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="0957047820-21">#{</span><span·class="ss">code</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="n">Code</span><span·class="p">,</span><span·class="w">·</span><span·class="nb">length</span><span·class="w">·</span[·...·truncated·by·diffoscope;·len:·522,·SHA:·608f4f886573ea7d56ac96f47f7d2a2e60296cab03862d184242e32d56501c8c·...·]-21">}</span><span·class="p">,</span><span·class="w"> |
| 519 | ····</span><span·class="p"·data-group-id=" | 519 | ····</span><span·class="p"·data-group-id="0957047820-24">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">locked</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="0957047820-24">}</span><span·class="p">.</span><span·class="w"> |
| 520 | </span><span·class="nf">callback_mode</span><span·class="p"·data-group-id=" | 520 | </span><span·class="nf">callback_mode</span><span·class="p"·data-group-id="0957047820-25">(</span><span·class="p"·data-group-id="0957047820-25">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 521 | ····</span><span·class="ss">state_functions</span><span·class="p">.</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">locked</span><span·class="p"·data-group-id=" | 521 | ····</span><span·class="ss">state_functions</span><span·class="p">.</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">locked</span><span·class="p"·data-group-id="8159266074-1">(</span><span·class="w"> |
| 522 | ··</span><span·class="ss">cast</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id=" | 522 | ··</span><span·class="ss">cast</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8159266074-2">{</span><span·class="ss">button</span><span·class="p">,</span><span·class="n">Button</span><span·class="p"·data-group-id="8159266074-2">}</span><span·class="p">,</span><span·class="w"> |
| 523 | ··</span><span·class="p"·data-group-id=" | 523 | ··</span><span·class="p"·data-group-id="8159266074-3">#{</span><span·class="ss">code</span><span·class="w">·</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">Code</span><span·class="p">,</span><span·class="w">·</span><span·class="nb">length</span><span·class="w">·</span><sp[·...·truncated·by·diffoscope;·len:·450,·SHA:·1daf381f77acf9cdafce3735a385d5e9d90ea73c842041923aa6b4cb74eac26a·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 524 | ····</span><span·class="n">NewButtons</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 524 | ····</span><span·class="n">NewButtons</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 525 | ········</span><span·class="k">if</span><span·class="w"> | 525 | ········</span><span·class="k">if</span><span·class="w"> |
| 526 | ············</span><span·class="nf">length</span><span·class="p"·data-group-id=" | 526 | ············</span><span·class="nf">length</span><span·class="p"·data-group-id="8159266074-4">(</span><span·class="n">Buttons</span><span·class="p"·data-group-id="8159266074-4">)</span><span·class="w">·</span><span·class="o"><</span><span·class="w">·</span><span·class="n">Length</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 527 | ················</span><span·class="n">Buttons</span><span·class="p">;</span><span·class="w"> | 527 | ················</span><span·class="n">Buttons</span><span·class="p">;</span><span·class="w"> |
| 528 | ············</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 528 | ············</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 529 | ················</span><span·class="nf">tl</span><span·class="p"·data-group-id=" | 529 | ················</span><span·class="nf">tl</span><span·class="p"·data-group-id="8159266074-5">(</span><span·class="n">Buttons</span><span·class="p"·data-group-id="8159266074-5">)</span><span·class="w"> |
| 530 | ········</span><span·class="k">end</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="p"·data-group-id=" | 530 | ········</span><span·class="k">end</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="p"·data-group-id="8159266074-6">[</span><span·class="n">Button</span><span·class="p"·data-group-id="8159266074-6">]</span><span·class="p">,</span><span·class="w"> |
| 531 | ····</span><span·class="k">if</span><span·class="w"> | 531 | ····</span><span·class="k">if</span><span·class="w"> |
| 532 | ········</span><span·class="n">NewButtons</span><span·class="w">·</span><span·class="o">=:=</span><span·class="w">·</span><span·class="n">Code</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="c1">%·Correct</span><span·class="w"> | 532 | ········</span><span·class="n">NewButtons</span><span·class="w">·</span><span·class="o">=:=</span><span·class="w">·</span><span·class="n">Code</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="c1">%·Correct</span><span·class="w"> |
| 533 | » ····</span><span·class="nf">do_unlock</span><span·class="p"·data-group-id=" | 533 | » ····</span><span·class="nf">do_unlock</span><span·class="p"·data-group-id="8159266074-7">(</span><span·class="p"·data-group-id="8159266074-7">)</span><span·class="p">,</span><span·class="w"> |
| 534 | ············</span><span·class="p"·data-group-id=" | 534 | ············</span><span·class="p"·data-group-id="8159266074-8">{</span><span·class="ss">next_state</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">open</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="8159266074-9">#{</[·...·truncated·by·diffoscope;·len:·258,·SHA:·ee93dfc330d87bab28fd18c8d5acd7c1dbb25c89702ceb5d5ebfb242fe827a28·...·]-9">}</span><span·class="p">,</span><span·class="w"> |
| 535 | ·············</span><span·class="p"·data-group-id=" | 535 | ·············</span><span·class="p"·data-group-id="8159266074-11">[</span><span·class="p"·data-group-id="8159266074-12">{</span><span·class="ss">state_timeout</span><span·class="p">,</span><span·class="mi">10</span><span·class="p">_</span><span·class="mi">000</span><span·class="p">,</span><span·class="ss">[·...·truncated·by·diffoscope;·len:·160,·SHA:·ecc28326b510585873ce8714ff37e51d1144160342036c056dcf17f54a591fa8·...·]-8">}</span><span·class="p">;</span><span·class="w">·</span><span·class="c1">%·Time·in·milliseconds</span><span·class="w"> |
| 536 | » </span><span·class="ss">true</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="c1">%·Incomplete·|·Incorrect</span><span·class="w"> | 536 | » </span><span·class="ss">true</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="c1">%·Incomplete·|·Incorrect</span><span·class="w"> |
| 537 | ············</span><span·class="p"·data-group-id=" | 537 | ············</span><span·class="p"·data-group-id="8159266074-13">{</span><span·class="ss">next_state</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">locked</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="8159266074-14">[·...·truncated·by·diffoscope;·len:·241,·SHA:·866b9702354de7ab48406c4ce0b78f9057f1382a75b0ef2771153c9007a94d01·...·]-13">}</span><span·class="w"> |
| 538 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">open</span><span·class="p"·data-group-id=" | 538 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">open</span><span·class="p"·data-group-id="2800030445-1">(</span><span·class="ss">state_timeout</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">lock</span><span·class="p">,</span><span·class="w">··</span><span·class="n">Data</span><span·class="p"·data-group-id="2800030445-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 539 | ····</span><span·class="nf">do_lock</span><span·class="p"·data-group-id=" | 539 | ····</span><span·class="nf">do_lock</span><span·class="p"·data-group-id="2800030445-2">(</span><span·class="p"·data-group-id="2800030445-2">)</span><span·class="p">,</span><span·class="w"> |
| 540 | ····</span><span·class="p"·data-group-id=" | 540 | ····</span><span·class="p"·data-group-id="2800030445-3">{</span><span·class="ss">next_state</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">locked</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="2800030445-3">}</span><span·class="p">;</span><span·class="w"> |
| 541 | </span><span·class="nf">open</span><span·class="p"·data-group-id=" | 541 | </span><span·class="nf">open</span><span·class="p"·data-group-id="2800030445-4">(</span><span·class="ss">cast</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2800030445-5">{</span><span·class="ss">button</span><span·class="p">,</span><span·class="p">_</span><span·class="p"·data-group-[·...·truncated·by·diffoscope;·len:·142,·SHA:·09fe5e757d71776abd3fb1152811d25ec33a37eb5314ecfd9311c2612f794ca0·...·]-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 542 | ····</span><span·class="p"·data-group-id=" | 542 | ····</span><span·class="p"·data-group-id="2800030445-6">{</span><span·class="ss">next_state</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">open</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="2800030445-6">}</s[·...·truncated·by·diffoscope;·len:·214,·SHA:·039d917c70c588d90f88002c35448526e600e779644a2863ccfa352f2b4bbee5·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 543 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 543 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="2366960341-2">(</span><span·class="s">"Lock</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2366960341-3">[</span><span·class="p"·data-group-id="2366960341-3">[·...·truncated·by·diffoscope;·len:·49,·SHA:·4d31196f96defc8087852a82826de7aca8bfcfeee0a6d9d4827a859e3ba5ec32·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 544 | </span><span·class="nf">do_unlock</span><span·class="p"·data-group-id=" | 544 | </span><span·class="nf">do_unlock</span><span·class="p"·data-group-id="2366960341-4">(</span><span·class="p"·data-group-id="2366960341-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 545 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 545 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="2366960341-5">(</span><span·class="s">"Unlock</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2366960341-6">[</span><span·class="p"·data-group-id="2366960341-6[·...·truncated·by·diffoscope;·len:·51,·SHA:·ce8df99f234225f2c5b161c15381aae80f70849329263a3632e1a9903324604f·...·]-5">)</span><span·class="p">.</span><span·class="w"> |
| 546 | </span><span·class="nf">terminate</span><span·class="p"·data-group-id=" | 546 | </span><span·class="nf">terminate</span><span·class="p"·data-group-id="2366960341-7">(</span><span·class="p">_</span><span·class="n">Reason</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">Data</span><span·[·...·truncated·by·diffoscope;·len:·35,·SHA:·a5485d48a00ef472f61e17404e08cdf8f0825877940d5be1aed9cc79411cd2be·...·]-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 547 | ····</span><span·class="n">State</span><span·class="w">·</span><span·class="o">=/=</span><span·class="w">·</span><span·class="ss">locked</span><span·class="w">·</span><span·class="ow">andalso</span><span·class="w">·</span><span·class="nf">do_lock</span><span·class="p"·data-group-id=" | 547 | ····</span><span·class="n">State</span><span·class="w">·</span><span·class="o">=/=</span><span·class="w">·</span><span·class="ss">locked</span><span·class="w">·</span><span·class="ow">andalso</span><span·class="w">·</span><span·class="nf">do_lock</span><span·class="p"·data-group-id="2366960341-8">(</span><span·class="p"·data-group-id="2366960341-8">)</span><span·class="p">,</span><span·class="w"> |
| 548 | ····</span><span·class="ss">ok</span><span·class="p">.</span></code></pre><p>The·code·is·explained·in·the·next·sections.</p><h2·id="starting-gen_statem"·class="section-heading"> | 548 | ····</span><span·class="ss">ok</span><span·class="p">.</span></code></pre><p>The·code·is·explained·in·the·next·sections.</p><h2·id="starting-gen_statem"·class="section-heading"> |
| 549 | ··<a·href="#starting-gen_statem"·class="hover-link"> | 549 | ··<a·href="#starting-gen_statem"·class="hover-link"> |
| 550 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 550 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 551 | ··</a> | 551 | ··</a> |
| 552 | ··<span·class="text">Starting·gen_statem</span> | 552 | ··<span·class="text">Starting·gen_statem</span> |
| 553 | </h2> | 553 | </h2> |
| 554 | <p>In·the·example·in·the·previous·section,·<code·class="inline">gen_statem</code>·is·started·by·calling | 554 | <p>In·the·example·in·the·previous·section,·<code·class="inline">gen_statem</code>·is·started·by·calling |
| 555 | <code·class="inline">code_lock:start_link(Code)</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 555 | <code·class="inline">code_lock:start_link(Code)</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">start_link</span><span·class="p"·data-group-id="6761320007-1">(</span><span·class="n">Code</span><span·class="p"·data-group-id="6761320007-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 556 | ····</span><span·class="nc">gen_statem</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 556 | ····</span><span·class="nc">gen_statem</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id="6761320007-2">(</span><span·class="p"·data-group-id="6761320007-3">{</span><span·class="ss">local</span><span·class="p">,</span><span·class="o">?</span><span·class="n">NAME</span><span·class="p"·data-group-id="6761320007-3">}</span><span·class="p">,</span>[·...·truncated·by·diffoscope;·len:·347,·SHA:·470bea2679290c067de2f9587cdaf14598a20bb311eaa8ee014090521c836ecb·...·]-2">)</span><span·class="p">.</span></code></pre><p><code·class="inline">start_link/1</code>·calls·function·<a·href="../../lib/stdlib-6.2.1/doc/html/gen_statem.html#start_link/4"><code·class="inline">gen_statem:start_link/4</code></a>, |
| 557 | which·spawns·and·links·to·a·new·process,·a·<code·class="inline">gen_statem</code>.</p><ul><li><p>The·first·argument,·<code·class="inline">{local,?NAME}</code>,·specifies·the·name.·In·this·case,·the | 557 | which·spawns·and·links·to·a·new·process,·a·<code·class="inline">gen_statem</code>.</p><ul><li><p>The·first·argument,·<code·class="inline">{local,?NAME}</code>,·specifies·the·name.·In·this·case,·the |
| 558 | <code·class="inline">gen_statem</code>·is·locally·registered·as·<code·class="inline">code_lock</code>·through·the·macro·<code·class="inline">?NAME</code>.</p><p>If·the·name·is·omitted,·the·<code·class="inline">gen_statem</code>·is·not·registered.·Instead·its·pid | 558 | <code·class="inline">gen_statem</code>·is·locally·registered·as·<code·class="inline">code_lock</code>·through·the·macro·<code·class="inline">?NAME</code>.</p><p>If·the·name·is·omitted,·the·<code·class="inline">gen_statem</code>·is·not·registered.·Instead·its·pid |
| 559 | must·be·used.·The·name·can·also·be·specified·as·<code·class="inline">{global, Name}</code>,·then·the | 559 | must·be·used.·The·name·can·also·be·specified·as·<code·class="inline">{global, Name}</code>,·then·the |
| 560 | <code·class="inline">gen_statem</code>·is·registered·using·<a·href="../../lib/kernel-10.2.3/doc/html/global.html#register_name/2"><code·class="inline">global:register_name/2</code></a>·in·Kernel.</p></li><li><p>The·second·argument,·<code·class="inline">?MODULE</code>,·is·the·name·of·the·<em>callback·module</em>, | 560 | <code·class="inline">gen_statem</code>·is·registered·using·<a·href="../../lib/kernel-10.2.3/doc/html/global.html#register_name/2"><code·class="inline">global:register_name/2</code></a>·in·Kernel.</p></li><li><p>The·second·argument,·<code·class="inline">?MODULE</code>,·is·the·name·of·the·<em>callback·module</em>, |
| 561 | that·is,·the·module·where·the·callback·functions·are·located, | 561 | that·is,·the·module·where·the·callback·functions·are·located, |
| 562 | which·is·this·module.</p><p>The·interface·functions·(<code·class="inline">start_link/1</code>·and·<code·class="inline">button/1</code>)·are·located·in·the | 562 | which·is·this·module.</p><p>The·interface·functions·(<code·class="inline">start_link/1</code>·and·<code·class="inline">button/1</code>)·are·located·in·the |
| 563 | same·module·as·the·callback·functions·(<code·class="inline">init/1</code>,·<code·class="inline">locked/3</code>,·and·<code·class="inline">open/3</code>). | 563 | same·module·as·the·callback·functions·(<code·class="inline">init/1</code>,·<code·class="inline">locked/3</code>,·and·<code·class="inline">open/3</code>). |
| Offset 574, 184 lines modified | Offset 574, 184 lines modified | ||
| 574 | see·<a·href="../../lib/stdlib-6.2.1/doc/html/gen_statem.html#start_link/3"><code·class="inline">gen_statem:start_link/3</code></a>.</p></li></ul><p>If·name·registration·succeeds,·the·new·<code·class="inline">gen_statem</code>·process·calls·callback | 574 | see·<a·href="../../lib/stdlib-6.2.1/doc/html/gen_statem.html#start_link/3"><code·class="inline">gen_statem:start_link/3</code></a>.</p></li></ul><p>If·name·registration·succeeds,·the·new·<code·class="inline">gen_statem</code>·process·calls·callback |
| 575 | function·<code·class="inline">code_lock:init(Code)</code>.·This·function·is·expected·to·return | 575 | function·<code·class="inline">code_lock:init(Code)</code>.·This·function·is·expected·to·return |
| 576 | <code·class="inline">{ok,·State,·Data}</code>,·where·<code·class="inline">State</code>·is·the·initial·state·of·the·<code·class="inline">gen_statem</code>, | 576 | <code·class="inline">{ok,·State,·Data}</code>,·where·<code·class="inline">State</code>·is·the·initial·state·of·the·<code·class="inline">gen_statem</code>, |
| 577 | in·this·case·<code·class="inline">locked</code>;·assuming·that·the·door·is·locked·to·begin·with. | 577 | in·this·case·<code·class="inline">locked</code>;·assuming·that·the·door·is·locked·to·begin·with. |
| 578 | <code·class="inline">Data</code>·is·the·internal·server·data·of·the·<code·class="inline">gen_statem</code>.·Here·the·server·data | 578 | <code·class="inline">Data</code>·is·the·internal·server·data·of·the·<code·class="inline">gen_statem</code>.·Here·the·server·data |
| 579 | is·a·<a·href="../../lib/stdlib-6.2.1/doc/html/maps.html"><code·class="inline">map()</code></a>·with·key·<code·class="inline">code</code>·that·stores·the·correct | 579 | is·a·<a·href="../../lib/stdlib-6.2.1/doc/html/maps.html"><code·class="inline">map()</code></a>·with·key·<code·class="inline">code</code>·that·stores·the·correct |
| 580 | button·sequence,·key·<code·class="inline">length</code>·store·its·length,·and·key·<code·class="inline">buttons</code> | 580 | button·sequence,·key·<code·class="inline">length</code>·store·its·length,·and·key·<code·class="inline">buttons</code> |
| 581 | that·stores·the·collected·buttons·up·to·the·same·length.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">init</span><span·class="p"·data-group-id=" | 581 | that·stores·the·collected·buttons·up·to·the·same·length.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">init</span><span·class="p"·data-group-id="6261072874-1">(</span><span·class="n">Code</span><span·class="p"·data-group-id="6261072874-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 582 | ····</span><span·class="nf">do_lock</span><span·class="p"·data-group-id=" | 582 | ····</span><span·class="nf">do_lock</span><span·class="p"·data-group-id="6261072874-2">(</span><span·class="p"·data-group-id="6261072874-2">)</span><span·class="p">,</span><span·class="w"> |
| 583 | ····</span><span·class="n">Data</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 583 | ····</span><span·class="n">Data</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6261072874-3">#{</span><span·class="ss">code</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="n">Code</span><span·class="p">,</span><span·class="w">·</span><span·class="nb">length</span><span·class="w">·</span>[·...·truncated·by·diffoscope;·len:·517,·SHA:·e83ae3e846d824e2517daf9da52960d778bc793531863a8cb77ea8991aa9a54b·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 584 | ····</span><span·class="p"·data-group-id=" | 584 | ····</span><span·class="p"·data-group-id="6261072874-6">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">locked</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="6261072874-6">}</span><span·class="p">.</span></code></pre><p>Function·<a·href="../../lib/stdlib-6.2.1/doc/html/gen_statem.html#start_link/3"><code·class="inline">gen_statem:start_link/3,4</code></a> |
| 585 | is·synchronous.·It·does·not·return·until·the·<code·class="inline">gen_statem</code>·is·initialized | 585 | is·synchronous.·It·does·not·return·until·the·<code·class="inline">gen_statem</code>·is·initialized |
| 586 | and·is·ready·to·receive·events.</p><p>Function·<a·href="../../lib/stdlib-6.2.1/doc/html/gen_statem.html#start_link/3"><code·class="inline">gen_statem:start_link/3,4</code></a> | 586 | and·is·ready·to·receive·events.</p><p>Function·<a·href="../../lib/stdlib-6.2.1/doc/html/gen_statem.html#start_link/3"><code·class="inline">gen_statem:start_link/3,4</code></a> |
| 587 | must·be·used·if·the·<code·class="inline">gen_statem</code>·is·part·of·a·supervision·tree,·that·is, | 587 | must·be·used·if·the·<code·class="inline">gen_statem</code>·is·part·of·a·supervision·tree,·that·is, |
| 588 | started·by·a·supervisor.··Function, | 588 | started·by·a·supervisor.··Function, |
| 589 | <a·href="../../lib/stdlib-6.2.1/doc/html/gen_statem.html#start/3"><code·class="inline">gen_statem:start/3,4</code></a>·can·be·used·to·start | 589 | <a·href="../../lib/stdlib-6.2.1/doc/html/gen_statem.html#start/3"><code·class="inline">gen_statem:start/3,4</code></a>·can·be·used·to·start |
| 590 | a·standalone·<code·class="inline">gen_statem</code>,·meaning·it·is·not·part·of·a·supervision·tree.</p><p>Function·<a·href="../../lib/stdlib-6.2.1/doc/html/gen_statem.html#c:callback_mode/0"><code·class="inline">Module:callback_mode/0</code></a>·selects | 590 | a·standalone·<code·class="inline">gen_statem</code>,·meaning·it·is·not·part·of·a·supervision·tree.</p><p>Function·<a·href="../../lib/stdlib-6.2.1/doc/html/gen_statem.html#c:callback_mode/0"><code·class="inline">Module:callback_mode/0</code></a>·selects |
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| 128 | the·order·specified·by·this·list,·and·are·terminated·in·the·reverse·order.</p><h2·id="example"·class="section-heading"> | 128 | the·order·specified·by·this·list,·and·are·terminated·in·the·reverse·order.</p><h2·id="example"·class="section-heading"> |
| 129 | ··<a·href="#example"·class="hover-link"> | 129 | ··<a·href="#example"·class="hover-link"> |
| 130 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 130 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 131 | ··</a> | 131 | ··</a> |
| 132 | ··<span·class="text">Example</span> | 132 | ··<span·class="text">Example</span> |
| 133 | </h2> | 133 | </h2> |
| 134 | <p>The·callback·module·for·a·supervisor·starting·the·server·from | 134 | <p>The·callback·module·for·a·supervisor·starting·the·server·from |
| 135 | <a·href="gen_server_concepts.html#ex">gen_server·Behaviour</a>·can·look·as·follows:</p><p><a·href=""·id="ex"></a></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 135 | <a·href="gen_server_concepts.html#ex">gen_server·Behaviour</a>·can·look·as·follows:</p><p><a·href=""·id="ex"></a></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="6746761971-1">(</span><span·class="ss">ch_sup</span><span·class="p"·data-group-id="6746761971-1">)</span><span·class="p">.</span><span·class="w"> |
| 136 | </span><span·class="p">-</span><span·class="na">behaviour</span><span·class="p"·data-group-id=" | 136 | </span><span·class="p">-</span><span·class="na">behaviour</span><span·class="p"·data-group-id="6746761971-2">(</span><span·class="ss">supervisor</span><span·class="p"·data-group-id="6746761971-2">)</span><span·class="p">.</span><span·class="w"> |
| 137 | </span><span·class="w"> | 137 | </span><span·class="w"> |
| 138 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="3355179740-3">(</span><span·class="p"·data-group-id="3355179740-4">[</span><span·class="ss">start_link</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data-group-id="3355179740-4">]</span><span·class="p"·data-group-id="3355179740-3">)</span><span·class="p">.</span><span·class="w"> | ||
| 139 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 138 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="6746761971-3">(</span><span·class="p"·data-group-id="6746761971-4">[</span><span·class="ss">start_link</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data-group-id="6746761971-4">]</span><span·class="p"·data-group-id="6746761971-3">)</span><span·class="p">.</span><span·class="w"> |
| 139 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="6746761971-5">(</span><span·class="p"·data-group-id="6746761971-6">[</span><span·class="ss">init</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id="6746761971-6">]</span><span·class="p"·data-group-id="6746761971-5">)</span><span·class="p">.</span><span·class="w"> | ||
| 140 | </span><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 140 | </span><span·class="nf">start_link</span><span·class="p"·data-group-id="6746761971-7">(</span><span·class="p"·data-group-id="6746761971-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 141 | ····</span><span·class="nc">supervisor</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 141 | ····</span><span·class="nc">supervisor</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id="6746761971-8">(</span><span·class="ss">ch_sup</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6746761971-9">[</span><span·class="p"·data-group-id="6746761971-9">]</span><span·class="p"·data-group-id="6746761971-8">)</span><span·class="p">.</span><span·class="w"> |
| 142 | </span><span·class="nf">init</span><span·class="p"·data-group-id=" | 142 | </span><span·class="nf">init</span><span·class="p"·data-group-id="6746761971-10">(</span><span·class="p">_</span><span·class="n">Args</span><span·class="p"·data-group-id="6746761971-10">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 143 | ····</span><span·class="n">SupFlags</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 143 | ····</span><span·class="n">SupFlags</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6746761971-11">#{</span><span·class="ss">strategy</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">one_for_one</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">intensity</span><span·cl[·...·truncated·by·diffoscope;·len:·313,·SHA:·7ca11c3f324a8f95ba5ea78d58f6b01a759c84e49b8cf718ac8fd4389da472fd·...·]-11">}</span><span·class="p">,</span><span·class="w"> |
| 144 | ····</span><span·class="n">ChildSpecs</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 144 | ····</span><span·class="n">ChildSpecs</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6746761971-12">[</span><span·class="p"·data-group-id="6746761971-13">#{</span><span·class="ss">id</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">ch3</span><span·class="p">,</span><span·class="w"> |
| 145 | ····················</span><span·class="ss">start</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 145 | ····················</span><span·class="ss">start</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="6746761971-14">{</span><span·class="ss">ch3</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">start_link</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6746761971-15">[</span><span·class="p"·data-g[·...·truncated·by·diffoscope;·len:·73,·SHA:·5eb93bf8273d74db0fd7baf0d7a262b137430999f96e292f17cd15dcc2340bed·...·]-14">}</span><span·class="p">,</span><span·class="w"> |
| 146 | ····················</span><span·class="ss">restart</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">permanent</span><span·class="p">,</span><span·class="w"> | 146 | ····················</span><span·class="ss">restart</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">permanent</span><span·class="p">,</span><span·class="w"> |
| 147 | ····················</span><span·class="ss">shutdown</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">brutal_kill</span><span·class="p">,</span><span·class="w"> | 147 | ····················</span><span·class="ss">shutdown</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">brutal_kill</span><span·class="p">,</span><span·class="w"> |
| 148 | ····················</span><span·class="ss">type</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">worker</span><span·class="p">,</span><span·class="w"> | 148 | ····················</span><span·class="ss">type</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">worker</span><span·class="p">,</span><span·class="w"> |
| 149 | ····················</span><span·class="ss">modules</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 149 | ····················</span><span·class="ss">modules</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="6746761971-16">[</span><span·class="ss">ch3</span><span·class="p"·data-group-id="6746761971-16">]</span><span·class="p"·data-group-id="6746761971-13">}</span><span·class="p"·data-group-id="6746761971-12">]</span><span·class="p">,</span><span·class="w"> |
| 150 | ····</span><span·class="p"·data-group-id=" | 150 | ····</span><span·class="p"·data-group-id="6746761971-17">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6746761971-18">{</span><span·class="n">SupFlags</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ChildSpecs[·...·truncated·by·diffoscope;·len:·102,·SHA:·bc80f799dbb1b2e7d1dddc3a4df066e0f6bbbb460dbf8fae093868ab575572a3·...·]-17">}</span><span·class="p">.</span></code></pre><p>The·<code·class="inline">SupFlags</code>·variable·in·the·return·value·from·<code·class="inline">init/1</code>·represents·the |
| 151 | <a·href="sup_princ.html#flags">supervisor·flags</a>.</p><p>The·<code·class="inline">ChildSpecs</code>·variable·in·the·return·value·from·<code·class="inline">init/1</code>·is·a·list·of | 151 | <a·href="sup_princ.html#flags">supervisor·flags</a>.</p><p>The·<code·class="inline">ChildSpecs</code>·variable·in·the·return·value·from·<code·class="inline">init/1</code>·is·a·list·of |
| 152 | <a·href="sup_princ.html#spec">child·specifications</a>.</p><p><a·href=""·id="flags"></a></p><h2·id="supervisor-flags"·class="section-heading"> | 152 | <a·href="sup_princ.html#spec">child·specifications</a>.</p><p><a·href=""·id="flags"></a></p><h2·id="supervisor-flags"·class="section-heading"> |
| 153 | ··<a·href="#supervisor-flags"·class="hover-link"> | 153 | ··<a·href="#supervisor-flags"·class="hover-link"> |
| 154 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 154 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 155 | ··</a> | 155 | ··</a> |
| 156 | ··<span·class="text">Supervisor·Flags</span> | 156 | ··<span·class="text">Supervisor·Flags</span> |
| 157 | </h2> | 157 | </h2> |
| 158 | <p>This·is·the·type·definition·for·the·supervisor·flags:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">sup_flags</span><span·class="p"·data-group-id="9017021975-1">(</span><span·class="p"·data-group-id="9017021975-1">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="9017021975-2">#{</span><span·class="ss">strategy</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">strategy</span><span·class="p"·data-group-id="9017021975-3">(</span><span·class="p"·data-group-id="9017021975-3">)</span><span·class="p">,</span><span·class="w">···········</span><span·class="c1">%·optional</span><span·class="w"> | ||
| 159 | ················</span><span·class="ss">intensity</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">non_neg_integer</span><span·class="p"·data-group-id="9017021975-4">(</span><span·class="p"·data-group-id="9017021975-4">)</span><span·class="p">,</span><span·class="w">···</span><span·class="c1">%·optional</span><span·class="w"> | ||
| 160 | 158 | <p>This·is·the·type·definition·for·the·supervisor·flags:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">sup_flags</span><span·class="p"·data-group-id="9831249049-1">(</span><span·class="p"·data-group-id="9831249049-1">)</span><span·cla[·...·truncated·by·diffoscope;·len:·404,·SHA:·f8e812c7e51d21d692293a89f427ba9644bd78a938a19a5785fb3d30e79c0709·...·]··········</span><span·class="c1">%·optional</span><span·class="w"> | |
| 159 | ················</span><span·class="ss">intensity</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">non_neg_integer</span><span·class="p"·data-group-id="9831249049-4">(</span><span·class="p"·data-group-id="9831249049-4">)</span><span·class="p">,</span><span·class="w">···</span><span·class="c1">%·optional</span><span·class="w"> | ||
| 160 | ················</span><span·class="ss">period</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">pos_integer</span><span·class="p"·data-group-id="9831249049-5">(</span><span·class="p"·data-group-id="9831249049-5">)</span><span·class="p">,</span><span·class="w">··········</span><span·class="c1">%·optional</span><span·class="w"> | ||
| 161 | ················</span><span·class="ss">auto_shutdown</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">auto_shutdown</span><span·class="p"·data-group-id="9 | 161 | ················</span><span·class="ss">auto_shutdown</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">auto_shutdown</span><span·class="p"·data-group-id="9831249049-6">(</span><span·class="p"·data-group-id="9831249049-6">)</span><span·class="p"·data-group-id="9831249049-2">}</span><span·class="w">·</span><span·class="c1">%·optional</span><span·class="w"> |
| 162 | ····</span><span·class="nf">strategy</span><span·class="p"·data-group-id="9 | 162 | ····</span><span·class="nf">strategy</span><span·class="p"·data-group-id="9831249049-7">(</span><span·class="p"·data-group-id="9831249049-7">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">one_for_all</span><span·class="w"> |
| 163 | ···············</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">one_for_one</span><span·class="w"> | 163 | ···············</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">one_for_one</span><span·class="w"> |
| 164 | ···············</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">rest_for_one</span><span·class="w"> | 164 | ···············</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">rest_for_one</span><span·class="w"> |
| 165 | ···············</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">simple_one_for_one</span><span·class="w"> | 165 | ···············</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">simple_one_for_one</span><span·class="w"> |
| 166 | ····</span><span·class="nf">auto_shutdown</span><span·class="p"·data-group-id="9 | 166 | ····</span><span·class="nf">auto_shutdown</span><span·class="p"·data-group-id="9831249049-8">(</span><span·class="p"·data-group-id="9831249049-8">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">never</span><span·class="w"> |
| 167 | ····················</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">any_significant</span><span·class="w"> | 167 | ····················</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">any_significant</span><span·class="w"> |
| 168 | ····················</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">all_significant</span></code></pre><ul><li><code·class="inline">strategy</code>·specifies·the·<a·href="sup_princ.html#strategy">restart·strategy</a>.</li><li><code·class="inline">intensity</code>·and·<code·class="inline">period</code>·specify·the | 168 | ····················</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">all_significant</span></code></pre><ul><li><code·class="inline">strategy</code>·specifies·the·<a·href="sup_princ.html#strategy">restart·strategy</a>.</li><li><code·class="inline">intensity</code>·and·<code·class="inline">period</code>·specify·the |
| 169 | <a·href="sup_princ.html#max_intensity">maximum·restart·intensity</a>.</li><li><code·class="inline">auto_shutdown</code>·specifies·whether·and·when·a·supervisor·should | 169 | <a·href="sup_princ.html#max_intensity">maximum·restart·intensity</a>.</li><li><code·class="inline">auto_shutdown</code>·specifies·whether·and·when·a·supervisor·should |
| 170 | <a·href="sup_princ.html#automatic-shutdown">automatically·shut·itself·down</a>.</li></ul><p><a·href=""·id="strategy"></a></p><h2·id="restart-strategy"·class="section-heading"> | 170 | <a·href="sup_princ.html#automatic-shutdown">automatically·shut·itself·down</a>.</li></ul><p><a·href=""·id="strategy"></a></p><h2·id="restart-strategy"·class="section-heading"> |
| 171 | ··<a·href="#restart-strategy"·class="hover-link"> | 171 | ··<a·href="#restart-strategy"·class="hover-link"> |
| 172 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 172 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 173 | ··</a> | 173 | ··</a> |
| Offset 408, 28 lines modified | Offset 408, 28 lines modified | ||
| 408 | exhaust·the·<a·href="sup_princ.html#max_intensity">Maximum·Restart·Intensity</a>·of·the | 408 | exhaust·the·<a·href="sup_princ.html#max_intensity">Maximum·Restart·Intensity</a>·of·the |
| 409 | parent·supervisor.</p></section><p><a·href=""·id="spec"></a></p><h2·id="child-specification"·class="section-heading"> | 409 | parent·supervisor.</p></section><p><a·href=""·id="spec"></a></p><h2·id="child-specification"·class="section-heading"> |
| 410 | ··<a·href="#child-specification"·class="hover-link"> | 410 | ··<a·href="#child-specification"·class="hover-link"> |
| 411 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 411 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 412 | ··</a> | 412 | ··</a> |
| 413 | ··<span·class="text">Child·Specification</span> | 413 | ··<span·class="text">Child·Specification</span> |
| 414 | </h2> | 414 | </h2> |
| 415 | <p>The·type·definition·for·a·child·specification·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">child_spec</span><span·class="p"·data-group-id="9536701112-1">(</span><span·class="p"·data-group-id="9536701112-1">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="9536701112-2">#{</span><span·class="ss">id</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">child_id</span><span·class="p"·data-group-id="9536701112-3">(</span><span·class="p"·data-group-id="9536701112-3">)</span><span·class="p">,</span><span·class="w">·············</span><span·class="c1">%·mandatory</span><span·class="w"> | ||
| 416 | 415 | <p>The·type·definition·for·a·child·specification·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">child_spec</span><span·class="p"·data-group-id="6725426256-1">(</span><span·class="p"·data-group-id="6725426256-1">)</span><[·...·truncated·by·diffoscope;·len:·406,·SHA:·250786f4a3afd25442ee14e6806360ae3dbe329b6bc0574311f820ae73e04e30·...·]············</span><span·class="c1">%·mandatory</span><span·class="w"> | |
| 416 | ·················</span><span·class="ss">start</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">mfargs</span><span·class="p"·data-group-id="6725426256-4">(</span><span·class="p"·data-group-id="6725426256-4">)</span><span·class="p">,</span><span·class="w">············</span><span·class="c1">%·mandatory</span><span·class="w"> | ||
| 417 | ·················</span><span·class="ss">restart</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">restart</span><span·class="p"·data-group-id=" | 417 | ·················</span><span·class="ss">restart</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">restart</span><span·class="p"·data-group-id="6725426256-5">(</span><span·class="p"·data-group-id="6725426256-5">)</span><span·class="p">,</span><span·class="w">·········</span><span·class="c1">%·optional</span><span·class="w"> |
| 418 | ·················</span><span·class="ss">significant</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">significant</span><span·class="p"·data-group-id="9536701112-6">(</span><span·class="p"·data-group-id="9536701112-6">)</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%·optional</span><span·class="w"> | ||
| 419 | ·················</span><span·class="ss">shutdown</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">shutdown</span><span·class="p"·data-group-id="9536701112-7">(</span><span·class="p"·data-group-id="9536701112-7">)</span><span·class="p">,</span><span·class="w">·······</span><span·class="c1">%·optional</span><span·class="w"> | ||
| 420 | ·················</span><span·class="ss"> | 418 | ·················</span><span·class="ss">significant</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">significant</span><span·class="p"·data-group-id="6725426256-6">(</span><span·class="p"·data-group-id="6725426256-6">)</span><span·class="p">,</sp[·...·truncated·by·diffoscope;·len:·19,·SHA:·887e09d9f57385f2929afb80f23f02203796ca6431e1f51107d90a29beb84747·...·]·</span><span·class="c1">%·optional</span><span·class="w"> |
| 419 | ·················</span><span·class="ss">shutdown</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">shutdown</span><span·class="p"·data-group-id="6725426256-7">(</span><span·class="p"·data-group-id="6725426256-7">)</span><span·class="p">,</span><span·class="w">·······</span><span·class="c1">%·optional</span><span·class="w"> | ||
| 420 | ·················</span><span·class="ss">type</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">worker</span><span·class="p"·data-group-id="6725426256-8">(</span><span·class="p"·data-group-id="6725426256-8">)</span><span·class="p">,</span><span·class="w">·············</span><span·class="c1">%·optional</span><span·class="w"> | ||
| 421 | ·················</span><span·class="ss">modules</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">modules</span><span·class="p"·data-group-id=" | 421 | ·················</span><span·class="ss">modules</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">modules</span><span·class="p"·data-group-id="6725426256-9">(</span><span·class="p"·data-group-id="6725426256-9">)</span><span·class="p"·data-group-id="6725426256-2">}</span><span·class="w">·········</span><span·class="c1">%·optional</span><span·class="w"> |
| 422 | ····</span><span·class="nf">child_id</span><span·class="p"·data-group-id=" | 422 | ····</span><span·class="nf">child_id</span><span·class="p"·data-group-id="6725426256-10">(</span><span·class="p"·data-group-id="6725426256-10">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id="6725426256-11">(</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·16,·SHA:·55874340bf6fd48efed2c5a8ac3c2ba8d305114c95b77b30f5459d52744ceed4·...·]-11">)</span><span·class="w"> |
| 423 | ····</span><span·class="nf">mfargs</span><span·class="p"·data-group-id=" | 423 | ····</span><span·class="nf">mfargs</span><span·class="p"·data-group-id="6725426256-12">(</span><span·class="p"·data-group-id="6725426256-12">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6725426256-13">{</span><span·class="n">M</span><span·class="w">·</span><span[·...·truncated·by·diffoscope;·len:·962,·SHA:·ff44cddfc49a0da634e5d1a74150ca5f0cb1fff51d97395875c27ffde398ad70·...·]-13">}</span><span·class="w"> |
| 424 | ····</span><span·class="nf">modules</span><span·class="p"·data-group-id=" | 424 | ····</span><span·class="nf">modules</span><span·class="p"·data-group-id="6725426256-18">(</span><span·class="p"·data-group-id="6725426256-18">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6725426256-19">[</span><span·class="nf">module</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·126,·SHA:·3b6db6c1fd22a8fc771d07bc67f9ebbcdaf5213ec3d995fe5e5b9da3e4b21fb0·...·]-19">]</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">dynamic</span><span·class="w"> |
| 425 | ····</span><span·class="nf">restart</span><span·class="p"·data-group-id=" | 425 | ····</span><span·class="nf">restart</span><span·class="p"·data-group-id="6725426256-21">(</span><span·class="p"·data-group-id="6725426256-21">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">permanent</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">transient</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">temporary</span><span·class="w"> |
| 426 | ····</span><span·class="nf">significant</span><span·class="p"·data-group-id=" | 426 | ····</span><span·class="nf">significant</span><span·class="p"·data-group-id="6725426256-22">(</span><span·class="p"·data-group-id="6725426256-22">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">boolean</span><span·class="p"·data-group-id="6725426256-23">(</span><span·class="p"·data-g[·...·truncated·by·diffoscope;·len:·19,·SHA:·f69bd5e64d730a0ab55cbec35c67e3976b3c3a8b187c0c33867fb3ac9a4afd6d·...·]-23">)</span><span·class="w"> |
| 427 | ····</span><span·class="nf">shutdown</span><span·class="p"·data-group-id=" | 427 | ····</span><span·class="nf">shutdown</span><span·class="p"·data-group-id="6725426256-24">(</span><span·class="p"·data-group-id="6725426256-24">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">brutal_kill</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span>[·...·truncated·by·diffoscope;·len:·126,·SHA:·8f98bc166860c9c255b2ddc3061bd2cf30a48fbca189449925d64beed893af4e·...·]-25">)</span><span·class="w"> |
| 428 | ····</span><span·class="nf">worker</span><span·class="p"·data-group-id=" | 428 | ····</span><span·class="nf">worker</span><span·class="p"·data-group-id="6725426256-26">(</span><span·class="p"·data-group-id="6725426256-26">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">worker</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">supervisor</span></code></pre><ul><li><p><code·class="inline">id</code>·is·used·to·identify·the·child·specification·internally·by·the·supervisor.</p><p>The·<code·class="inline">id</code>·key·is·mandatory.</p><p>Note·that·this·identifier·occasionally·has·been·called·"name".·As·far·as |
| 429 | possible,·the·terms·"identifier"·or·"id"·are·now·used·but·in·order·to·keep | 429 | possible,·the·terms·"identifier"·or·"id"·are·now·used·but·in·order·to·keep |
| 430 | backwards·compatibility,·some·occurrences·of·"name"·can·still·be·found,·for | 430 | backwards·compatibility,·some·occurrences·of·"name"·can·still·be·found,·for |
| 431 | example·in·error·messages.</p></li><li><p><code·class="inline">start</code>·defines·the·function·call·used·to·start·the·child·process.·It·is·a | 431 | example·in·error·messages.</p></li><li><p><code·class="inline">start</code>·defines·the·function·call·used·to·start·the·child·process.·It·is·a |
| 432 | module-function-arguments·tuple·used·as·<a·href="../../erts-15.2.3/doc/html/erlang.html#apply/3"><code·class="inline">apply(M,·F,·A)</code></a>.</p><p>It·is·to·be·(or·result·in)·a·call·to·any·of·the·following:</p><ul><li><a·href="../../lib/stdlib-6.2.1/doc/html/supervisor.html#start_link/3"><code·class="inline">supervisor:start_link/2,3</code></a></li><li><a·href="../../lib/stdlib-6.2.1/doc/html/gen_server.html#start_link/4"><code·class="inline">gen_server:start_link/3,4</code></a></li><li><a·href="../../lib/stdlib-6.2.1/doc/html/gen_statem.html#start_link/4"><code·class="inline">gen_statem:start_link/3,4</code></a></li><li><a·href="../../lib/stdlib-6.2.1/doc/html/gen_event.html#start_link/2"><code·class="inline">gen_event:start_link/0,1,2</code></a></li><li>A·function·compliant·with·these·functions.·For·details,·see | 432 | module-function-arguments·tuple·used·as·<a·href="../../erts-15.2.3/doc/html/erlang.html#apply/3"><code·class="inline">apply(M,·F,·A)</code></a>.</p><p>It·is·to·be·(or·result·in)·a·call·to·any·of·the·following:</p><ul><li><a·href="../../lib/stdlib-6.2.1/doc/html/supervisor.html#start_link/3"><code·class="inline">supervisor:start_link/2,3</code></a></li><li><a·href="../../lib/stdlib-6.2.1/doc/html/gen_server.html#start_link/4"><code·class="inline">gen_server:start_link/3,4</code></a></li><li><a·href="../../lib/stdlib-6.2.1/doc/html/gen_statem.html#start_link/4"><code·class="inline">gen_statem:start_link/3,4</code></a></li><li><a·href="../../lib/stdlib-6.2.1/doc/html/gen_event.html#start_link/2"><code·class="inline">gen_event:start_link/0,1,2</code></a></li><li>A·function·compliant·with·these·functions.·For·details,·see |
| 433 | <a·href="../../lib/stdlib-6.2.1/doc/html/supervisor.html"><code·class="inline">supervisor</code></a>.</li></ul><p>The·<code·class="inline">start</code>·key·is·mandatory.</p></li><li><p><a·href=""·id="restart"></a>·<code·class="inline">restart</code>·defines·when·a·terminated·child·process·is·to·be | 433 | <a·href="../../lib/stdlib-6.2.1/doc/html/supervisor.html"><code·class="inline">supervisor</code></a>.</li></ul><p>The·<code·class="inline">start</code>·key·is·mandatory.</p></li><li><p><a·href=""·id="restart"></a>·<code·class="inline">restart</code>·defines·when·a·terminated·child·process·is·to·be |
| 434 | restarted.</p><ul><li>A·<code·class="inline">permanent</code>·child·process·is·always·restarted.</li><li>A·<code·class="inline">temporary</code>·child·process·is·never·restarted·(not·even·when·the·supervisor | 434 | restarted.</p><ul><li>A·<code·class="inline">permanent</code>·child·process·is·always·restarted.</li><li>A·<code·class="inline">temporary</code>·child·process·is·never·restarted·(not·even·when·the·supervisor |
| 435 | restart·strategy·is·<code·class="inline">rest_for_one</code>·or·<code·class="inline">one_for_all</code>·and·a·sibling·death | 435 | restart·strategy·is·<code·class="inline">rest_for_one</code>·or·<code·class="inline">one_for_all</code>·and·a·sibling·death |
| Offset 457, 53 lines modified | Offset 457, 53 lines modified | ||
| 457 | <code·class="inline">supervisor</code>,·the·default·value·<code·class="inline">infinity</code>·will·be·used.</p></li><li><p><code·class="inline">type</code>·specifies·whether·the·child·process·is·a·supervisor·or·a·worker.</p><p>The·<code·class="inline">type</code>·key·is·optional.·If·it·is·not·given,·the·default·value·<code·class="inline">worker</code> | 457 | <code·class="inline">supervisor</code>,·the·default·value·<code·class="inline">infinity</code>·will·be·used.</p></li><li><p><code·class="inline">type</code>·specifies·whether·the·child·process·is·a·supervisor·or·a·worker.</p><p>The·<code·class="inline">type</code>·key·is·optional.·If·it·is·not·given,·the·default·value·<code·class="inline">worker</code> |
| 458 | will·be·used.</p></li><li><p><code·class="inline">modules</code>·has·to·be·a·list·consisting·of·a·single·element.·The·value | 458 | will·be·used.</p></li><li><p><code·class="inline">modules</code>·has·to·be·a·list·consisting·of·a·single·element.·The·value |
| 459 | of·that·element·depends·on·the·behaviour·of·the·process:</p><ul><li>If·the·child·process·is·a·<code·class="inline">gen_event</code>,·the·element·has·to·be·the·atom | 459 | of·that·element·depends·on·the·behaviour·of·the·process:</p><ul><li>If·the·child·process·is·a·<code·class="inline">gen_event</code>,·the·element·has·to·be·the·atom |
| 460 | <code·class="inline">dynamic</code>.</li><li>Otherwise,·the·element·should·be·<code·class="inline">Module</code>,·where·<code·class="inline">Module</code>·is·the | 460 | <code·class="inline">dynamic</code>.</li><li>Otherwise,·the·element·should·be·<code·class="inline">Module</code>,·where·<code·class="inline">Module</code>·is·the |
| 461 | name·of·the·callback·module.</li></ul><p>This·information·is·used·by·the·release·handler·during·upgrades·and | 461 | name·of·the·callback·module.</li></ul><p>This·information·is·used·by·the·release·handler·during·upgrades·and |
| 462 | downgrades;·see·<a·href="release_handling.html">Release·Handling</a>.</p><p>The·<code·class="inline">modules</code>·key·is·optional.·If·it·is·not·given,·it·defaults·to·<code·class="inline">[M]</code>,·where | 462 | downgrades;·see·<a·href="release_handling.html">Release·Handling</a>.</p><p>The·<code·class="inline">modules</code>·key·is·optional.·If·it·is·not·given,·it·defaults·to·<code·class="inline">[M]</code>,·where |
| 463 | <code·class="inline">M</code>·comes·from·the·child's·start·<code·class="inline">{M,F,A}</code>.</p></li></ul><p><em>Example:</em>·The·child·specification·to·start·the·server·<code·class="inline">ch3</code>·in·the·previous | 463 | <code·class="inline">M</code>·comes·from·the·child's·start·<code·class="inline">{M,F,A}</code>.</p></li></ul><p><em>Example:</em>·The·child·specification·to·start·the·server·<code·class="inline">ch3</code>·in·the·previous |
| 464 | example·look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 464 | example·look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="3420301283-1">#{</span><span·class="ss">id</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">ch3</span><span·class="p">,</span><span·class="w"> |
| 465 | ··</span><span·class="ss">start</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 465 | ··</span><span·class="ss">start</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="3420301283-2">{</span><span·class="ss">ch3</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">start_link</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3420301283-3">[</span><span·class="p"·data-gro[·...·truncated·by·diffoscope;·len:·70,·SHA:·d97150088b0f236ae81587c59856a35ea997b5343804ce142ed25762aad36bcd·...·]-2">}</span><span·class="p">,</span><span·class="w"> |
| 466 | ··</span><span·class="ss">restart</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">permanent</span><span·class="p">,</span><span·class="w"> | 466 | ··</span><span·class="ss">restart</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">permanent</span><span·class="p">,</span><span·class="w"> |
| 467 | ··</span><span·class="ss">shutdown</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">brutal_kill</span><span·class="p">,</span><span·class="w"> | 467 | ··</span><span·class="ss">shutdown</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">brutal_kill</span><span·class="p">,</span><span·class="w"> |
| 468 | ··</span><span·class="ss">type</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">worker</span><span·class="p">,</span><span·class="w"> | 468 | ··</span><span·class="ss">type</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">worker</span><span·class="p">,</span><span·class="w"> |
| 469 | ··</span><span·class="ss">modules</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 469 | ··</span><span·class="ss">modules</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="3420301283-4">[</span><span·class="ss">ch3</span><span·class="p"·data-group-id="3420301283-4">]</span><span·class="p"·data-group-id="3420301283-1">}</span></code></pre><p>or·simplified,·relying·on·the·default·values:</p><pre><code·class="text">#{id·=>·ch3, |
| 470 | ··start·=>·{ch3,·start_link,·[]}, | 470 | ··start·=>·{ch3,·start_link,·[]}, |
| 471 | ··shutdown·=>·brutal_kill}</code></pre><p>Example:·A·child·specification·to·start·the·event·manager·from·the·chapter·about | 471 | ··shutdown·=>·brutal_kill}</code></pre><p>Example:·A·child·specification·to·start·the·event·manager·from·the·chapter·about |
| 472 | <a·href="events.html#mgr">gen_event</a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 472 | <a·href="events.html#mgr">gen_event</a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="5861896967-1">#{</span><span·class="ss">id</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">error_man</span><span·class="p">,</span><span·class="w"> |
| 473 | ··</span><span·class="ss">start</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 473 | ··</span><span·class="ss">start</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="5861896967-2">{</span><span·class="ss">gen_event</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">start_link</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5861896967-3">[</span><span·class="p"·da[·...·truncated·by·diffoscope;·len:·292,·SHA:·251141509e39af3ec457a0118406d21209df2f26938390193ae39c7cf0f45e07·...·]-2">}</span><span·class="p">,</span><span·class="w"> |
| 474 | ··</span><span·class="ss">modules</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">dynamic</span><span·class="p"·data-group-id=" | 474 | ··</span><span·class="ss">modules</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">dynamic</span><span·class="p"·data-group-id="5861896967-1">}</span></code></pre><p>Both·server·and·event·manager·are·registered·processes·which·can·be·expected·to |
| 475 | be·always·accessible.·Thus·they·are·specified·to·be·<code·class="inline">permanent</code>.</p><p><code·class="inline">ch3</code>·does·not·need·to·do·any·cleaning·up·before·termination.·Thus,·no·shutdown | 475 | be·always·accessible.·Thus·they·are·specified·to·be·<code·class="inline">permanent</code>.</p><p><code·class="inline">ch3</code>·does·not·need·to·do·any·cleaning·up·before·termination.·Thus,·no·shutdown |
| 476 | time·is·needed,·but·<code·class="inline">brutal_kill</code>·is·sufficient.·<code·class="inline">error_man</code>·can·need·some·time | 476 | time·is·needed,·but·<code·class="inline">brutal_kill</code>·is·sufficient.·<code·class="inline">error_man</code>·can·need·some·time |
| 477 | for·the·event·handlers·to·clean·up,·thus·the·shutdown·time·is·set·to·5000·ms | 477 | for·the·event·handlers·to·clean·up,·thus·the·shutdown·time·is·set·to·5000·ms |
| 478 | (which·is·the·default·value).</p><p>Example:·A·child·specification·to·start·another·supervisor:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 478 | (which·is·the·default·value).</p><p>Example:·A·child·specification·to·start·another·supervisor:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="0320249305-1">#{</span><span·class="ss">id</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">sup</span><span·class="p">,</span><span·class="w"> |
| 479 | ··</span><span·class="ss">start</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 479 | ··</span><span·class="ss">start</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="0320249305-2">{</span><span·class="ss">sup</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">start_link</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0320249305-3">[</span><span·class="p"·data-gro[·...·truncated·by·diffoscope;·len:·70,·SHA:·e14a359cbf853aae09efc3da3c2516a0d67551755fb3baa00e76720184726b79·...·]-2">}</span><span·class="p">,</span><span·class="w"> |
| 480 | ··</span><span·class="ss">restart</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">transient</span><span·class="p">,</span><span·class="w"> | 480 | ··</span><span·class="ss">restart</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">transient</span><span·class="p">,</span><span·class="w"> |
| 481 | ··</span><span·class="ss">type</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">supervisor</span><span·class="p"·data-group-id=" | 481 | ··</span><span·class="ss">type</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">supervisor</span><span·class="p"·data-group-id="0320249305-1">}</span><span·class="w">·</span><span·class="c1">%·will·cause·default·shutdown=>infinity</span></code></pre><p><a·href=""·id="super_tree"></a></p><h2·id="starting-a-supervisor"·class="section-heading"> |
| 482 | ··<a·href="#starting-a-supervisor"·class="hover-link"> | 482 | ··<a·href="#starting-a-supervisor"·class="hover-link"> |
| 483 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 483 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 484 | ··</a> | 484 | ··</a> |
| 485 | ··<span·class="text">Starting·a·Supervisor</span> | 485 | ··<span·class="text">Starting·a·Supervisor</span> |
| 486 | </h2> | 486 | </h2> |
| 487 | <p>In·the·previous·example,·the·supervisor·is·started·by·calling | 487 | <p>In·the·previous·example,·the·supervisor·is·started·by·calling |
| 488 | <code·class="inline">ch_sup:start_link()</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 488 | <code·class="inline">ch_sup:start_link()</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">start_link</span><span·class="p"·data-group-id="2581053577-1">(</span><span·class="p"·data-group-id="2581053577-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 489 | ····</span><span·class="nc">supervisor</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 489 | ····</span><span·class="nc">supervisor</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id="2581053577-2">(</span><span·class="ss">ch_sup</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2581053577-3">[</span><span·class="p"·data-group-id="2581053577-3">]</span><span·class="p"·data-group-id="2581053577-2">)</span><span·class="p">.</span></code></pre><p><code·class="inline">ch_sup:start_link</code>·calls·function·<a·href="../../lib/stdlib-6.2.1/doc/html/supervisor.html#start_link/2"><code·class="inline">supervisor:start_link/2</code></a>,·which·spawns·and |
| 490 | links·to·a·new·process,·a·supervisor.</p><ul><li>The·first·argument,·<code·class="inline">ch_sup</code>,·is·the·name·of·the·callback·module,·that·is,·the | 490 | links·to·a·new·process,·a·supervisor.</p><ul><li>The·first·argument,·<code·class="inline">ch_sup</code>,·is·the·name·of·the·callback·module,·that·is,·the |
| 491 | module·where·the·<code·class="inline">init</code>·callback·function·is·located.</li><li>The·second·argument,·<code·class="inline">[]</code>,·is·a·term·that·is·passed·as·is·to·the·callback | 491 | module·where·the·<code·class="inline">init</code>·callback·function·is·located.</li><li>The·second·argument,·<code·class="inline">[]</code>,·is·a·term·that·is·passed·as·is·to·the·callback |
| 492 | function·<code·class="inline">init</code>.·Here,·<code·class="inline">init</code>·does·not·need·any·data·and·ignores·the·argument.</li></ul><p>In·this·case,·the·supervisor·is·not·registered.·Instead·its·pid·must·be·used.·A | 492 | function·<code·class="inline">init</code>.·Here,·<code·class="inline">init</code>·does·not·need·any·data·and·ignores·the·argument.</li></ul><p>In·this·case,·the·supervisor·is·not·registered.·Instead·its·pid·must·be·used.·A |
| 493 | name·can·be·specified·by·calling | 493 | name·can·be·specified·by·calling |
| 494 | <a·href="../../lib/stdlib-6.2.1/doc/html/supervisor.html#start_link/3"><code·class="inline">supervisor:start_link({local,·Name},·Module,·Args)</code></a> | 494 | <a·href="../../lib/stdlib-6.2.1/doc/html/supervisor.html#start_link/3"><code·class="inline">supervisor:start_link({local,·Name},·Module,·Args)</code></a> |
| 495 | or | 495 | or |
| 496 | <a·href="../../lib/stdlib-6.2.1/doc/html/supervisor.html#start_link/3"><code·class="inline">supervisor:start_link({global,·Name},·Module,·Args)</code></a>.</p><p>The·new·supervisor·process·calls·the·callback·function·<code·class="inline">ch_sup:init([])</code>.·<code·class="inline">init</code> | 496 | <a·href="../../lib/stdlib-6.2.1/doc/html/supervisor.html#start_link/3"><code·class="inline">supervisor:start_link({global,·Name},·Module,·Args)</code></a>.</p><p>The·new·supervisor·process·calls·the·callback·function·<code·class="inline">ch_sup:init([])</code>.·<code·class="inline">init</code> |
| 497 | has·to·return·<code·class="inline">{ok,·{SupFlags,·ChildSpecs}}</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">init</span><span·class="p"·data-group-id=" | 497 | has·to·return·<code·class="inline">{ok,·{SupFlags,·ChildSpecs}}</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">init</span><span·class="p"·data-group-id="4608353179-1">(</span><span·class="p">_</span><span·class="n">Args</span><span·class="p"·data-group-id="4608353179-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 498 | ····</span><span·class="n">SupFlags</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 498 | ····</span><span·class="n">SupFlags</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4608353179-2">#{</span><span·class="p"·data-group-id="4608353179-2">}</span><span·class="p">,</span><span·class="w"> |
| 499 | ····</span><span·class="n">ChildSpecs</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 499 | ····</span><span·class="n">ChildSpecs</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4608353179-3">[</span><span·class="p"·data-group-id="4608353179-4">#{</span><span·class="ss">id</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">ch3</span><span·class="p">,</span><span·class="w"> |
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| 146 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 146 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 147 | ··</a> | 147 | ··</a> |
| 148 | ··<span·class="text">Deleting·an·Element</span> | 148 | ··<span·class="text">Deleting·an·Element</span> |
| 149 | </h3> | 149 | </h3> |
| 150 | <p>The·<code·class="inline">delete</code>·operation·is·considered·successful·if·the·element·was·not·present | 150 | <p>The·<code·class="inline">delete</code>·operation·is·considered·successful·if·the·element·was·not·present |
| 151 | in·the·table.·Hence·all·attempts·to·check·that·the·element·is·present·in·the | 151 | in·the·table.·Hence·all·attempts·to·check·that·the·element·is·present·in·the |
| 152 | Ets/Mnesia·table·before·deletion·are·unnecessary.·Here·follows·an·example·for | 152 | Ets/Mnesia·table·before·deletion·are·unnecessary.·Here·follows·an·example·for |
| 153 | Ets·tables:</p><p><strong>DO</strong></p><pre><code·class="text">ets:delete(Tab,·Key),</code></pre><p><strong>DO·NOT</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">case</span><span·class="w">·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">lookup</span><span·class="p"·data-group-id=" | 153 | Ets·tables:</p><p><strong>DO</strong></p><pre><code·class="text">ets:delete(Tab,·Key),</code></pre><p><strong>DO·NOT</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">case</span><span·class="w">·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">lookup</span><span·class="p"·data-group-id="6022697288-1">(</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Key</span><span·class="p"·data-group-id="6022697288-1">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 154 | ····</span><span·class="p"·data-group-id=" | 154 | ····</span><span·class="p"·data-group-id="6022697288-2">[</span><span·class="p"·data-group-id="6022697288-2">]</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 155 | ········</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> | 155 | ········</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> |
| 156 | ····</span><span·class="p"·data-group-id=" | 156 | ····</span><span·class="p"·data-group-id="6022697288-3">[</span><span·class="p">_</span><span·class="p">|</span><span·class="p">_</span><span·class="p"·data-group-id="6022697288-3">]</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 157 | ········</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">delete</span><span·class="p"·data-group-id=" | 157 | ········</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">delete</span><span·class="p"·data-group-id="6022697288-4">(</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Key</span><span·class="p"·data-group-id="6022697288-4">)</span><span·class="w"> |
| 158 | </span><span·class="k">end</span><span·class="p">,</span></code></pre><h3·id="fetching-data"·class="section-heading"> | 158 | </span><span·class="k">end</span><span·class="p">,</span></code></pre><h3·id="fetching-data"·class="section-heading"> |
| 159 | ··<a·href="#fetching-data"·class="hover-link"> | 159 | ··<a·href="#fetching-data"·class="hover-link"> |
| 160 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 160 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 161 | ··</a> | 161 | ··</a> |
| 162 | ··<span·class="text">Fetching·Data</span> | 162 | ··<span·class="text">Fetching·Data</span> |
| 163 | </h3> | 163 | </h3> |
| 164 | <p>Do·not·fetch·data·that·you·already·have.</p><p>Consider·that·you·have·a·module·that·handles·the·abstract·data·type·<code·class="inline">Person</code>. | 164 | <p>Do·not·fetch·data·that·you·already·have.</p><p>Consider·that·you·have·a·module·that·handles·the·abstract·data·type·<code·class="inline">Person</code>. |
| 165 | You·export·the·interface·function·<code·class="inline">print_person/1</code>,·which·uses·the·internal | 165 | You·export·the·interface·function·<code·class="inline">print_person/1</code>,·which·uses·the·internal |
| 166 | functions·<code·class="inline">print_name/1</code>,·<code·class="inline">print_age/1</code>,·and·<code·class="inline">print_occupation/1</code>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>If·the·function·<code·class="inline">print_name/1</code>,·and·so·on,·had·been·interface·functions,·the | 166 | functions·<code·class="inline">print_name/1</code>,·<code·class="inline">print_age/1</code>,·and·<code·class="inline">print_occupation/1</code>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>If·the·function·<code·class="inline">print_name/1</code>,·and·so·on,·had·been·interface·functions,·the |
| 167 | situation·would·have·been·different,·as·you·do·not·want·the·user·of·the | 167 | situation·would·have·been·different,·as·you·do·not·want·the·user·of·the |
| 168 | interface·to·know·about·the·internal·data·representation.</p></section><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%%·Interface·function</span><span·class="w"> | 168 | interface·to·know·about·the·internal·data·representation.</p></section><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%%·Interface·function</span><span·class="w"> |
| 169 | </span><span·class="nf">print_person</span><span·class="p"·data-group-id=" | 169 | </span><span·class="nf">print_person</span><span·class="p"·data-group-id="5085928665-1">(</span><span·class="n">PersonId</span><span·class="p"·data-group-id="5085928665-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 170 | ····</span><span·class="c1">%%·Look·up·the·person·in·the·named·table·person,</span><span·class="w"> | 170 | ····</span><span·class="c1">%%·Look·up·the·person·in·the·named·table·person,</span><span·class="w"> |
| 171 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">lookup</span><span·class="p"·data-group-id=" | 171 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">lookup</span><span·class="p"·data-group-id="5085928665-2">(</span><span·class="ss">person</span><span·class="p">,</span><span·class="w">·</span><span·class="n">PersonId</span><span·class="p"·data-group-id="5085928665-2">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 172 | ········</span><span·class="p"·data-group-id=" | 172 | ········</span><span·class="p"·data-group-id="5085928665-3">[</span><span·class="n">Person</span><span·class="p"·data-group-id="5085928665-3">]</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 173 | ············</span><span·class="nf">print_name</span><span·class="p"·data-group-id=" | 173 | ············</span><span·class="nf">print_name</span><span·class="p"·data-group-id="5085928665-4">(</span><span·class="n">Person</span><span·class="p"·data-group-id="5085928665-4">)</span><span·class="p">,</span><span·class="w"> |
| 174 | ············</span><span·class="nf">print_age</span><span·class="p"·data-group-id=" | 174 | ············</span><span·class="nf">print_age</span><span·class="p"·data-group-id="5085928665-5">(</span><span·class="n">Person</span><span·class="p"·data-group-id="5085928665-5">)</span><span·class="p">,</span><span·class="w"> |
| 175 | ············</span><span·class="nf">print_occupation</span><span·class="p"·data-group-id=" | 175 | ············</span><span·class="nf">print_occupation</span><span·class="p"·data-group-id="5085928665-6">(</span><span·class="n">Person</span><span·class="p"·data-group-id="5085928665-6">)</span><span·class="p">;</span><span·class="w"> |
| 176 | ········</span><span·class="p"·data-group-id=" | 176 | ········</span><span·class="p"·data-group-id="5085928665-7">[</span><span·class="p"·data-group-id="5085928665-7">]</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 177 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 177 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="5085928665-8">(</span><span·class="s">"No·person·with·ID·=·</span><span·class="si">~p</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5085928665-9">[</span><sp[·...·truncated·by·diffoscope;·len:·122,·SHA:·c3deb678c3f98f6dda1f2e861a5971f0712a1cfbd014e1c4b142be766649c3e7·...·]-8">)</span><span·class="w"> |
| 178 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 178 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 179 | </span><span·class="c1">%%%·Internal·functions</span><span·class="w"> | 179 | </span><span·class="c1">%%%·Internal·functions</span><span·class="w"> |
| 180 | </span><span·class="nf">print_name</span><span·class="p"·data-group-id=" | 180 | </span><span·class="nf">print_name</span><span·class="p"·data-group-id="5085928665-10">(</span><span·class="n">Person</span><span·class="p"·data-group-id="5085928665-10">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 181 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 181 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="5085928665-11">(</span><span·class="s">"No·person·</span><span·class="si">~p</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5085928665-12">[</span><span·class[·...·truncated·by·diffoscope;·len:·219,·SHA:·9d40b33536828b0ea4e66bd2854e508255ac418d7bc2dc25c55b331b740fb4ef·...·]-11">)</span><span·class="p">.</span><span·class="w"> |
| 182 | </span><span·class="nf">print_age</span><span·class="p"·data-group-id=" | 182 | </span><span·class="nf">print_age</span><span·class="p"·data-group-id="5085928665-13">(</span><span·class="n">Person</span><span·class="p"·data-group-id="5085928665-13">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 183 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 183 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="5085928665-14">(</span><span·class="s">"No·person·</span><span·class="si">~p</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5085928665-15">[</span><span·class[·...·truncated·by·diffoscope;·len:·218,·SHA:·356e6c26cd42f302fb11e73f6af1ac512e3586b2ae8f31edd73347fc638d04b5·...·]-14">)</span><span·class="p">.</span><span·class="w"> |
| 184 | </span><span·class="nf">print_occupation</span><span·class="p"·data-group-id=" | 184 | </span><span·class="nf">print_occupation</span><span·class="p"·data-group-id="5085928665-16">(</span><span·class="n">Person</span><span·class="p"·data-group-id="5085928665-16">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 185 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 185 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="5085928665-17">(</span><span·class="s">"No·person·</span><span·class="si">~p</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5085928665-18">[</span><span·class[·...·truncated·by·diffoscope;·len:·225,·SHA:·d12b31708b35d2fca1dc71b6aa1e4be19b9c9589494ba653809dbce383c4ce69·...·]-17">)</span><span·class="p">.</span></code></pre><p><strong>DO·NOT</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%%·Interface·function</span><span·class="w"> |
| 186 | </span><span·class="nf">print_person</span><span·class="p"·data-group-id=" | 186 | </span><span·class="nf">print_person</span><span·class="p"·data-group-id="9540648828-1">(</span><span·class="n">PersonId</span><span·class="p"·data-group-id="9540648828-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 187 | ····</span><span·class="c1">%%·Look·up·the·person·in·the·named·table·person,</span><span·class="w"> | 187 | ····</span><span·class="c1">%%·Look·up·the·person·in·the·named·table·person,</span><span·class="w"> |
| 188 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">lookup</span><span·class="p"·data-group-id=" | 188 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">lookup</span><span·class="p"·data-group-id="9540648828-2">(</span><span·class="ss">person</span><span·class="p">,</span><span·class="w">·</span><span·class="n">PersonId</span><span·class="p"·data-group-id="9540648828-2">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 189 | ········</span><span·class="p"·data-group-id=" | 189 | ········</span><span·class="p"·data-group-id="9540648828-3">[</span><span·class="n">Person</span><span·class="p"·data-group-id="9540648828-3">]</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 190 | ············</span><span·class="nf">print_name</span><span·class="p"·data-group-id=" | 190 | ············</span><span·class="nf">print_name</span><span·class="p"·data-group-id="9540648828-4">(</span><span·class="n">PersonID</span><span·class="p"·data-group-id="9540648828-4">)</span><span·class="p">,</span><span·class="w"> |
| 191 | ············</span><span·class="nf">print_age</span><span·class="p"·data-group-id=" | 191 | ············</span><span·class="nf">print_age</span><span·class="p"·data-group-id="9540648828-5">(</span><span·class="n">PersonID</span><span·class="p"·data-group-id="9540648828-5">)</span><span·class="p">,</span><span·class="w"> |
| 192 | ············</span><span·class="nf">print_occupation</span><span·class="p"·data-group-id=" | 192 | ············</span><span·class="nf">print_occupation</span><span·class="p"·data-group-id="9540648828-6">(</span><span·class="n">PersonID</span><span·class="p"·data-group-id="9540648828-6">)</span><span·class="p">;</span><span·class="w"> |
| 193 | ········</span><span·class="p"·data-group-id=" | 193 | ········</span><span·class="p"·data-group-id="9540648828-7">[</span><span·class="p"·data-group-id="9540648828-7">]</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 194 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 194 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="9540648828-8">(</span><span·class="s">"No·person·with·ID·=·</span><span·class="si">~p</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9540648828-9">[</span><sp[·...·truncated·by·diffoscope;·len:·122,·SHA:·b80883191ad65d7df712d62ce82595882b5ba087591bfaa757443df912a0f958·...·]-8">)</span><span·class="w"> |
| 195 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 195 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 196 | </span><span·class="c1">%%%·Internal·functions</span><span·class="w"> | 196 | </span><span·class="c1">%%%·Internal·functions</span><span·class="w"> |
| 197 | </span><span·class="nf">print_name</span><span·class="p"·data-group-id=" | 197 | </span><span·class="nf">print_name</span><span·class="p"·data-group-id="9540648828-10">(</span><span·class="n">PersonID</span><span·class="p"·data-group-id="9540648828-10">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 198 | ····</span><span·class="p"·data-group-id=" | 198 | ····</span><span·class="p"·data-group-id="9540648828-11">[</span><span·class="n">Person</span><span·class="p"·data-group-id="9540648828-11">]</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">lookup</sp[·...·truncated·by·diffoscope;·len:·207,·SHA:·62a73c2b218b6a36c72e5998cba69b70ddea773324b539434275b8b322c4b923·...·]-12">)</span><span·class="p">,</span><span·class="w"> |
| 199 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 199 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="9540648828-13">(</span><span·class="s">"No·person·</span><span·class="si">~p</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9540648828-14">[</span><span·class[·...·truncated·by·diffoscope;·len:·219,·SHA:·a2c48f26b7cdebeef5971fd4b9a3c1e276218f2e1c2c31224a78b99924f5f43d·...·]-13">)</span><span·class="p">.</span><span·class="w"> |
| 200 | </span><span·class="nf">print_age</span><span·class="p"·data-group-id=" | 200 | </span><span·class="nf">print_age</span><span·class="p"·data-group-id="9540648828-15">(</span><span·class="n">PersonID</span><span·class="p"·data-group-id="9540648828-15">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 201 | ····</span><span·class="p"·data-group-id=" | 201 | ····</span><span·class="p"·data-group-id="9540648828-16">[</span><span·class="n">Person</span><span·class="p"·data-group-id="9540648828-16">]</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">lookup</sp[·...·truncated·by·diffoscope;·len:·207,·SHA:·f174e38352a9d5a082acd808785fed736b6227b8cf119b815c9bef67f47e7b2a·...·]-17">)</span><span·class="p">,</span><span·class="w"> |
| 202 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 202 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="9540648828-18">(</span><span·class="s">"No·person·</span><span·class="si">~p</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9540648828-19">[</span><span·class[·...·truncated·by·diffoscope;·len:·218,·SHA:·5907eb27ecd20ed1b105d68fce6a678ddc7e725dc69e7a831456ce0228979d95·...·]-18">)</span><span·class="p">.</span><span·class="w"> |
| 203 | </span><span·class="nf">print_occupation</span><span·class="p"·data-group-id=" | 203 | </span><span·class="nf">print_occupation</span><span·class="p"·data-group-id="9540648828-20">(</span><span·class="n">PersonID</span><span·class="p"·data-group-id="9540648828-20">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 204 | ····</span><span·class="p"·data-group-id=" | 204 | ····</span><span·class="p"·data-group-id="9540648828-21">[</span><span·class="n">Person</span><span·class="p"·data-group-id="9540648828-21">]</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">lookup</sp[·...·truncated·by·diffoscope;·len:·207,·SHA:·706b58b522cf22010d5e1f5ea985dc5a7b654edab6a508826eaac3a22d0bb6ba·...·]-22">)</span><span·class="p">,</span><span·class="w"> |
| 205 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 205 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="9540648828-23">(</span><span·class="s">"No·person·</span><span·class="si">~p</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9540648828-24">[</span><span·class[·...·truncated·by·diffoscope;·len:·225,·SHA:·42652e7904e7d7d15672438de7551fb0940a20d4e12a51201c435e527bcfe5cc·...·]-23">)</span><span·class="p">.</span></code></pre><h3·id="non-persistent-database-storage"·class="section-heading"> |
| 206 | ··<a·href="#non-persistent-database-storage"·class="hover-link"> | 206 | ··<a·href="#non-persistent-database-storage"·class="hover-link"> |
| 207 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 207 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 208 | ··</a> | 208 | ··</a> |
| 209 | ··<span·class="text">Non-Persistent·Database·Storage</span> | 209 | ··<span·class="text">Non-Persistent·Database·Storage</span> |
| 210 | </h3> | 210 | </h3> |
| 211 | <p>For·non-persistent·database·storage,·prefer·Ets·tables·over·Mnesia | 211 | <p>For·non-persistent·database·storage,·prefer·Ets·tables·over·Mnesia |
| 212 | <code·class="inline">local_content</code>·tables.·Even·the·Mnesia·<code·class="inline">dirty_write</code>·operations·carry·a·fixed | 212 | <code·class="inline">local_content</code>·tables.·Even·the·Mnesia·<code·class="inline">dirty_write</code>·operations·carry·a·fixed |
| Offset 226, 38 lines modified | Offset 226, 38 lines modified | ||
| 226 | </h3> | 226 | </h3> |
| 227 | <p>Assuming·an·Ets·table·that·uses·<code·class="inline">idno</code>·as·key·and·contains·the·following:</p><pre><code·class="text">[#person{idno·=·1,·name·=·"Adam",··age·=·31,·occupation·=·"mailman"}, | 227 | <p>Assuming·an·Ets·table·that·uses·<code·class="inline">idno</code>·as·key·and·contains·the·following:</p><pre><code·class="text">[#person{idno·=·1,·name·=·"Adam",··age·=·31,·occupation·=·"mailman"}, |
| 228 | ·#person{idno·=·2,·name·=·"Bryan",·age·=·31,·occupation·=·"cashier"}, | 228 | ·#person{idno·=·2,·name·=·"Bryan",·age·=·31,·occupation·=·"cashier"}, |
| 229 | ·#person{idno·=·3,·name·=·"Bryan",·age·=·35,·occupation·=·"banker"}, | 229 | ·#person{idno·=·3,·name·=·"Bryan",·age·=·35,·occupation·=·"banker"}, |
| 230 | ·#person{idno·=·4,·name·=·"Carl",··age·=·25,·occupation·=·"mailman"}]</code></pre><p>If·you·<em>must</em>·return·all·data·stored·in·the·Ets·table,·you·can·use | 230 | ·#person{idno·=·4,·name·=·"Carl",··age·=·25,·occupation·=·"mailman"}]</code></pre><p>If·you·<em>must</em>·return·all·data·stored·in·the·Ets·table,·you·can·use |
| 231 | <a·href="../../lib/stdlib-6.2.1/doc/html/ets.html#tab2list/1"><code·class="inline">ets:tab2list/1</code></a>.·However,·usually·you·are·only·interested·in·a·subset·of·the | 231 | <a·href="../../lib/stdlib-6.2.1/doc/html/ets.html#tab2list/1"><code·class="inline">ets:tab2list/1</code></a>.·However,·usually·you·are·only·interested·in·a·subset·of·the |
| 232 | information·in·which·case·<a·href="../../lib/stdlib-6.2.1/doc/html/ets.html#tab2list/1"><code·class="inline">ets:tab2list/1</code></a>·is·expensive.·If·you·only·want·to | 232 | information·in·which·case·<a·href="../../lib/stdlib-6.2.1/doc/html/ets.html#tab2list/1"><code·class="inline">ets:tab2list/1</code></a>·is·expensive.·If·you·only·want·to |
| 233 | extract·one·field·from·each·record,·for·example,·the·age·of·every·person,·then:</p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id=" | 233 | extract·one·field·from·each·record,·for·example,·the·age·of·every·person,·then:</p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id="8133754089-1">(</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8133754089-2">[</span><span·class="p"·data-group-id="8133754089-3">{</span><span·class="o">#</span><span·class="ss">person</span>[·...·truncated·by·diffoscope;·len:·41,·SHA:·da5b13fa75dfba126bd40537b325ce75690d63728d3870457c1a53270c4fca51·...·]-4">{</span><span·class="ss">idno</span><span·class="o">=</span><span·class="ss">'_'</span><span·class="p">,</span><span·class="w"> |
| 234 | ··························</span><span·class="ss">name</span><span·class="o">=</span><span·class="ss">'_'</span><span·class="p">,</span><span·class="w"> | 234 | ··························</span><span·class="ss">name</span><span·class="o">=</span><span·class="ss">'_'</span><span·class="p">,</span><span·class="w"> |
| 235 | ··························</span><span·class="ss">age</span><span·class="o">=</span><span·class="ss">'$1'</span><span·class="p">,</span><span·class="w"> | 235 | ··························</span><span·class="ss">age</span><span·class="o">=</span><span·class="ss">'$1'</span><span·class="p">,</span><span·class="w"> |
| 236 | ··························</span><span·class="ss">occupation</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">'_'</span><span·class="p"·data-group-id=" | 236 | ··························</span><span·class="ss">occupation</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">'_'</span><span·class="p"·data-group-id="8133754089-4">}</span><span·class="p">,</span><span·class="w"> |
| 237 | ················</span><span·class="p"·data-group-id=" | 237 | ················</span><span·class="p"·data-group-id="8133754089-5">[</span><span·class="p"·data-group-id="8133754089-5">]</span><span·class="p">,</span><span·class="w"> |
| 238 | ················</span><span·class="p"·data-group-id=" | 238 | ················</span><span·class="p"·data-group-id="8133754089-6">[</span><span·class="ss">'$1'</span><span·class="p"·data-group-id="8133754089-6">]</span><span·class="p"·data-group-id="8133754089-3">}</span><span·class="p"·data-group-id="8133754089-2">]</span><span·class="p"·data-group-id="81337540[·...·truncated·by·diffoscope;·len:·434,·SHA:·faec106a514f993aef6d13e1737a143d20b94ccfab763a1fe537e596acf31334·...·]-1">)</span><span·class="p">,</span><span·class="w"> |
| 239 | </span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">map</span><span·class="p"·data-group-id=" | 239 | </span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">map</span><span·class="p"·data-group-id="9897793661-2">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="9897793661-3">(</span><span·class="n">X</span><span·class="p"·data-group-id="9897793661-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·919,·SHA:·708c2216340f4b516487c1bdf1cb082553fe6b4ca20c6f0b942b480fb86e9cb7·...·]-4">{</span><span·class="ss">idno</span><span·class="o">=</span><span·class="ss">'_'</span><span·class="p">,</span><span·class="w"> |
| 240 | ··························</span><span·class="ss">name</span><span·class="o">=</span><span·class="s">"Bryan"</span><span·class="p">,</span><span·class="w"> | 240 | ··························</span><span·class="ss">name</span><span·class="o">=</span><span·class="s">"Bryan"</span><span·class="p">,</span><span·class="w"> |
| 241 | ··························</span><span·class="ss">age</span><span·class="o">=</span><span·class="ss">'$1'</span><span·class="p">,</span><span·class="w"> | 241 | ··························</span><span·class="ss">age</span><span·class="o">=</span><span·class="ss">'$1'</span><span·class="p">,</span><span·class="w"> |
| 242 | ··························</span><span·class="ss">occupation</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">'_'</span><span·class="p"·data-group-id=" | 242 | ··························</span><span·class="ss">occupation</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">'_'</span><span·class="p"·data-group-id="9001619095-4">}</span><span·class="p">,</span><span·class="w"> |
| 243 | ················</span><span·class="p"·data-group-id=" | 243 | ················</span><span·class="p"·data-group-id="9001619095-5">[</span><span·class="p"·data-group-id="9001619095-5">]</span><span·class="p">,</span><span·class="w"> |
| 244 | ················</span><span·class="p"·data-group-id=" | 244 | ················</span><span·class="p"·data-group-id="9001619095-6">[</span><span·class="ss">'$1'</span><span·class="p"·data-group-id="9001619095-6">]</span><span·class="p"·data-group-id="9001619095-3">}</span><span·class="p"·data-group-id="9001619095-2">]</span><span·class="p"·data-group-id="90016190[·...·truncated·by·diffoscope;·len:·410,·SHA:·93c9953eb9b83adac36b1c9e8a9d7f236062f2fae6616e04ed8a080235860ec5·...·]-1">)</span><span·class="p">,</span><span·class="w"> |
| 245 | </span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">foldl</span><span·class="p"·data-group-id=" | 245 | </span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">foldl</span><span·class="p"·data-group-id="2504068440-2">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="2504068440-3">(</span><span·class="n">X</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Acc</span><span·class="p"·data-group-id="2504068440-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="k">case</span><span·class="w">·</span><span·class="n">X</span><span·class="o">#</span><span·class="ss">person</span><span·class="p">.</span><span·class="ss">name</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 246 | ································</span><span·class="s">"Bryan"</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 246 | ································</span><span·class="s">"Bryan"</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 247 | ····································</span><span·class="p"·data-group-id=" | 247 | ····································</span><span·class="p"·data-group-id="2504068440-4">[</span><span·class="n">X</span><span·class="o">#</span><span·class="ss">person</span><span·class="p">.</span><span·class="ss">age</span><span·class="p">|</span><span·class="n">Acc</span><span·class="p"·data-group-id="2504068440-4">]</span><span·class="p">;</span><span·class="w"> |
| 248 | ·································</span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 248 | ·································</span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 249 | ·····································</span><span·class="n">Acc</span><span·class="w"> | 249 | ·····································</span><span·class="n">Acc</span><span·class="w"> |
| 250 | ···························</span><span·class="k">end</span><span·class="w"> | 250 | ···························</span><span·class="k">end</span><span·class="w"> |
| 251 | ·············</span><span·class="k">end</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id=" | 251 | ·············</span><span·class="k">end</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2504068440-5">[</span><span·class="p"·data-group-id="2504068440-5">]</span><span·class="p">,</span><span·class="w">·</span><span·class="n">TabList</span><span·class="p"·data-group-id="2504068440-2">)</span></code></pre><p>If·you·need·all·information·stored·in·the·Ets·table·about·persons·named·"Bryan", |
| 252 | then:</p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id=" | 252 | then:</p><p><strong>DO</strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id="4137866919-1">(</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4137866919-2">[</span><span·class="p"·data-group-id="4137866919-3">{</span><span·class="o">#</span><span·class="ss">person</span>[·...·truncated·by·diffoscope;·len:·41,·SHA:·b76a5d8c11b6be14f0cce03947c10cf6e35aeedd01f53b7fe780dbbef9a8fb2b·...·]-4">{</span><span·class="ss">idno</span><span·class="o">=</span><span·class="ss">'_'</span><span·class="p">,</span><span·class="w"> |
| 253 | ··························</span><span·class="ss">name</span><span·class="o">=</span><span·class="s">"Bryan"</span><span·class="p">,</span><span·class="w"> | 253 | ··························</span><span·class="ss">name</span><span·class="o">=</span><span·class="s">"Bryan"</span><span·class="p">,</span><span·class="w"> |
| 254 | ··························</span><span·class="ss">age</span><span·class="o">=</span><span·class="ss">'_'</span><span·class="p">,</span><span·class="w"> | 254 | ··························</span><span·class="ss">age</span><span·class="o">=</span><span·class="ss">'_'</span><span·class="p">,</span><span·class="w"> |
| 255 | ··························</span><span·class="ss">occupation</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">'_'</span><span·class="p"·data-group-id=" | 255 | ··························</span><span·class="ss">occupation</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">'_'</span><span·class="p"·data-group-id="4137866919-4">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4137866919-5">[</span><span·class="p"·data-group-id="4137866919-5">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4[·...·truncated·by·diffoscope;·len:·688,·SHA:·6ea0e9be7af999ee6c3d40f879fb7b28ff07cfc9090918fd8cd7780e2b2de106·...·]5-1">)</span><span·class="p">,</span><span·class="w"> |
| 256 | </span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">filter</span><span·class="p"·data-group-id=" | 256 | </span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">filter</span><span·class="p"·data-group-id="4570305755-2">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="4570305755-3">(</span><span·class="n">X</span><span·class="p"·data-group-id="4570305755-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·410,·SHA:·ae96726f7d4fd549c5ea96aab27e42513ea4d1fc26b39af125b89305aef0a580·...·]5-2">)</span><span·class="p">,</span></code></pre><h3·id="ordered_set-tables"·class="section-heading"> |
| 257 | ··<a·href="#ordered_set-tables"·class="hover-link"> | 257 | ··<a·href="#ordered_set-tables"·class="hover-link"> |
| 258 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 258 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 259 | ··</a> | 259 | ··</a> |
| 260 | ··<span·class="text"><code·class="inline">ordered_set</code>·Tables</span> | 260 | ··<span·class="text"><code·class="inline">ordered_set</code>·Tables</span> |
| 261 | </h3> | 261 | </h3> |
| 262 | <p>If·the·data·in·the·table·is·to·be·accessed·so·that·the·order·of·the·keys·in·the | 262 | <p>If·the·data·in·the·table·is·to·be·accessed·so·that·the·order·of·the·keys·in·the |
| 263 | table·is·significant,·the·table·type·<code·class="inline">ordered_set</code>·can·be·used·instead·of·the | 263 | table·is·significant,·the·table·type·<code·class="inline">ordered_set</code>·can·be·used·instead·of·the |
| Offset 293, 20 lines modified | Offset 293, 20 lines modified | ||
| 293 | Clearly,·the·second·table·would·have·to·be·kept·consistent·with·the·master | 293 | Clearly,·the·second·table·would·have·to·be·kept·consistent·with·the·master |
| 294 | table.·Mnesia·can·do·this·for·you,·but·a·home-brew·index·table·can·be·very | 294 | table.·Mnesia·can·do·this·for·you,·but·a·home-brew·index·table·can·be·very |
| 295 | efficient·compared·to·the·overhead·involved·in·using·Mnesia.</p><p>An·index·table·for·the·table·in·the·previous·examples·would·have·to·be·a·bag·(as | 295 | efficient·compared·to·the·overhead·involved·in·using·Mnesia.</p><p>An·index·table·for·the·table·in·the·previous·examples·would·have·to·be·a·bag·(as |
| 296 | keys·would·appear·more·than·once)·and·can·have·the·following·contents:</p><pre><code·class="text">[#index_entry{name="Adam",·idno=1}, | 296 | keys·would·appear·more·than·once)·and·can·have·the·following·contents:</p><pre><code·class="text">[#index_entry{name="Adam",·idno=1}, |
| 297 | ·#index_entry{name="Bryan",·idno=2}, | 297 | ·#index_entry{name="Bryan",·idno=2}, |
| 298 | ·#index_entry{name="Bryan",·idno=3}, | 298 | ·#index_entry{name="Bryan",·idno=3}, |
| 299 | ·#index_entry{name="Carl",·idno=4}]</code></pre><p>Given·this·index·table,·a·lookup·of·the·<code·class="inline">age</code>·fields·for·all·persons·named | 299 | ·#index_entry{name="Carl",·idno=4}]</code></pre><p>Given·this·index·table,·a·lookup·of·the·<code·class="inline">age</code>·fields·for·all·persons·named |
| 300 | "Bryan"·can·be·done·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">MatchingIDs</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">lookup</span><span·class="p"·data-group-id=" | 300 | "Bryan"·can·be·done·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">MatchingIDs</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">lookup</span><span·class="p"·data-group-id="2006675350-1">(</span><span·class="n">IndexTable</span><span·class="p">,</span><span·class="s">"Bryan"</span><span·class="p"·data-group-id="2006675350-1">)</span><span·class="p">,</span><span·class="w"> |
| 301 | </span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">map</span><span·class="p"·data-group-id=" | 301 | </span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">map</span><span·class="p"·data-group-id="2006675350-2">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="2006675350-3">(</span><span·class="o">#</span><span·class="ss">index_entry</span><span·class="p"·data-group-id="2006675350-4">{</span><span·class="ss">idno</span><span·class="w[·...·truncated·by·diffoscope;·len:·177,·SHA:·1c11d66a346ab5424298840c81da4b7bdf7eb4ca17c6d754d599be69f77d00c4·...·]-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 302 | ·················</span><span·class="p"·data-group-id=" | 302 | ·················</span><span·class="p"·data-group-id="2006675350-5">[</span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id="2006675350-6">{</span><span·class="ss">age</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Age</span><s[·...·truncated·by·diffoscope;·len:·458,·SHA:·7a28b7e0dd731545e92c04dfabda2499d55ffc6bf4a7afb65159f43cd6dbc00b·...·]-7">)</span><span·class="p">,</span><span·class="w"> |
| 303 | ·················</span><span·class="n">Age</span><span·class="w"> | 303 | ·················</span><span·class="n">Age</span><span·class="w"> |
| 304 | ··········</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 304 | ··········</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 305 | ··········</span><span·class="n">MatchingIDs</span><span·class="p"·data-group-id=" | 305 | ··········</span><span·class="n">MatchingIDs</span><span·class="p"·data-group-id="2006675350-2">)</span><span·class="p">,</span></code></pre><p>Notice·that·this·code·does·not·use·<a·href="../../lib/stdlib-6.2.1/doc/html/ets.html#match/2"><code·class="inline">ets:match/2</code></a>,·but·instead·uses·the |
| 306 | <a·href="../../lib/stdlib-6.2.1/doc/html/ets.html#lookup/2"><code·class="inline">ets:lookup/2</code></a>·call.·The·<a·href="../../lib/stdlib-6.2.1/doc/html/lists.html#map/2"><code·class="inline">lists:map/2</code></a>·call·is·only·used·to·traverse·the·<code·class="inline">idno</code>s | 306 | <a·href="../../lib/stdlib-6.2.1/doc/html/ets.html#lookup/2"><code·class="inline">ets:lookup/2</code></a>·call.·The·<a·href="../../lib/stdlib-6.2.1/doc/html/lists.html#map/2"><code·class="inline">lists:map/2</code></a>·call·is·only·used·to·traverse·the·<code·class="inline">idno</code>s |
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| 238 | and·optional·<code·class="inline">(=>)</code>·association·types.·If·an·association·type·is·mandatory,·an | 238 | and·optional·<code·class="inline">(=>)</code>·association·types.·If·an·association·type·is·mandatory,·an |
| 239 | association·with·that·type·needs·to·be·present.·In·the·case·of·an·optional | 239 | association·with·that·type·needs·to·be·present.·In·the·case·of·an·optional |
| 240 | association·type·it·is·not·required·for·the·key·type·to·be·present.</p><p>The·notation·<code·class="inline">#{}</code>·specifies·the·singleton·type·for·the·empty·map.·Note·that | 240 | association·type·it·is·not·required·for·the·key·type·to·be·present.</p><p>The·notation·<code·class="inline">#{}</code>·specifies·the·singleton·type·for·the·empty·map.·Note·that |
| 241 | this·notation·is·not·a·shorthand·for·the·<a·href="../../erts-15.2.3/doc/html/erlang.html#t:map/0"><code·class="inline">map/0</code></a>·type.</p><p>For·convenience,·the·following·types·are·also·built-in.·They·can·be·thought·as | 241 | this·notation·is·not·a·shorthand·for·the·<a·href="../../erts-15.2.3/doc/html/erlang.html#t:map/0"><code·class="inline">map/0</code></a>·type.</p><p>For·convenience,·the·following·types·are·also·built-in.·They·can·be·thought·as |
| 242 | predefined·aliases·for·the·type·unions·also·shown·in·the·table.</p><p><a·href=""·id="builtin_types"></a></p><table><thead><tr><th·style="text-align:·left;"><em>Built-in·type</em></th><th·style="text-align:·left;"><em>Defined·as</em></th></tr></thead><tbody><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:term/0"><code·class="inline">term/0</code></a></td><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:any/0"><code·class="inline">any/0</code></a></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:binary/0"><code·class="inline">binary/0</code></a></td><td·style="text-align:·left;"><code·class="inline"><<_:_*8>></code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:nonempty_binary/0"><code·class="inline">nonempty_binary/0</code></a></td><td·style="text-align:·left;"><code·class="inline"><<_:8,·_:_*8>></code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:bitstring/0"><code·class="inline">bitstring/0</code></a></td><td·style="text-align:·left;"><code·class="inline"><<_:_*1>></code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:nonempty_bitstring/0"><code·class="inline">nonempty_bitstring/0</code></a></td><td·style="text-align:·left;"><code·class="inline"><<_:1,·_:_*1>></code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:boolean/0"><code·class="inline">boolean/0</code></a></td><td·style="text-align:·left;"><code·class="inline">'false'</code>·|·<code·class="inline">'true'</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:byte/0"><code·class="inline">byte/0</code></a></td><td·style="text-align:·left;"><code·class="inline">0..255</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:char/0"><code·class="inline">char/0</code></a></td><td·style="text-align:·left;"><code·class="inline">0..16#10ffff</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:nil/0"><code·class="inline">nil/0</code></a></td><td·style="text-align:·left;"><code·class="inline">[]</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:number/0"><code·class="inline">number/0</code></a></td><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:integer/0"><code·class="inline">integer/0</code></a>·|·<a·href="../../erts-15.2.3/doc/html/erlang.html#t:float/0"><code·class="inline">float/0</code></a></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:list/0"><code·class="inline">list/0</code></a></td><td·style="text-align:·left;"><code·class="inline">[any()]</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:maybe_improper_list/0"><code·class="inline">maybe_improper_list/0</code></a></td><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:maybe_improper_list/2"><code·class="inline">maybe_improper_list(any(),·any())</code></a></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:nonempty_list/0"><code·class="inline">nonempty_list/0</code></a></td><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:nonempty_list/1"><code·class="inline">nonempty_list(any())</code></a></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:string/0"><code·class="inline">string/0</code></a></td><td·style="text-align:·left;"><code·class="inline">[char()]</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:nonempty_string/0"><code·class="inline">nonempty_string/0</code></a></td><td·style="text-align:·left;"><code·class="inline">[char(),...]</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:iodata/0"><code·class="inline">iodata/0</code></a></td><td·style="text-align:·left;"><code·class="inline">iolist()</code>·|·<code·class="inline">binary()</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:iolist/0"><code·class="inline">iolist/0</code></a></td><td·style="text-align:·left;"><code·class="inline">maybe_improper_list(byte()</code>·|·<code·class="inline">binary()</code>·|·<code·class="inline">iolist(),·binary()</code>·|·<code·class="inline">[])</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:map/0"><code·class="inline">map/0</code></a></td><td·style="text-align:·left;"><code·class="inline">#{any()·=>·any()}</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:function/0"><code·class="inline">function/0</code></a></td><td·style="text-align:·left;"><code·class="inline">fun()</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:module/0"><code·class="inline">module/0</code></a></td><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:atom/0"><code·class="inline">atom/0</code></a></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:mfa/0"><code·class="inline">mfa/0</code></a></td><td·style="text-align:·left;"><code·class="inline">{module(),atom(),arity()}</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:arity/0"><code·class="inline">arity/0</code></a></td><td·style="text-align:·left;"><code·class="inline">0..255</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:identifier/0"><code·class="inline">identifier/0</code></a></td><td·style="text-align:·left;"><code·class="inline">pid()</code>·|·<code·class="inline">port()</code>·|·<code·class="inline">reference()</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#node/0"><code·class="inline">node/0</code></a></td><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:atom/0"><code·class="inline">atom/0</code></a></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:timeout/0"><code·class="inline">timeout/0</code></a></td><td·style="text-align:·left;"><code·class="inline">'infinity'</code>·|·<code·class="inline">non_neg_integer()</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:no_return/0"><code·class="inline">no_return/0</code></a></td><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:none/0"><code·class="inline">none/0</code></a></td></tr></tbody></table><p><em>Table:·Built-in·types,·predefined·aliases</em></p><p>In·addition,·the·following·three·built-in·types·exist·and·can·be·thought·as | 242 | predefined·aliases·for·the·type·unions·also·shown·in·the·table.</p><p><a·href=""·id="builtin_types"></a></p><table><thead><tr><th·style="text-align:·left;"><em>Built-in·type</em></th><th·style="text-align:·left;"><em>Defined·as</em></th></tr></thead><tbody><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:term/0"><code·class="inline">term/0</code></a></td><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:any/0"><code·class="inline">any/0</code></a></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:binary/0"><code·class="inline">binary/0</code></a></td><td·style="text-align:·left;"><code·class="inline"><<_:_*8>></code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:nonempty_binary/0"><code·class="inline">nonempty_binary/0</code></a></td><td·style="text-align:·left;"><code·class="inline"><<_:8,·_:_*8>></code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:bitstring/0"><code·class="inline">bitstring/0</code></a></td><td·style="text-align:·left;"><code·class="inline"><<_:_*1>></code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:nonempty_bitstring/0"><code·class="inline">nonempty_bitstring/0</code></a></td><td·style="text-align:·left;"><code·class="inline"><<_:1,·_:_*1>></code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:boolean/0"><code·class="inline">boolean/0</code></a></td><td·style="text-align:·left;"><code·class="inline">'false'</code>·|·<code·class="inline">'true'</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:byte/0"><code·class="inline">byte/0</code></a></td><td·style="text-align:·left;"><code·class="inline">0..255</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:char/0"><code·class="inline">char/0</code></a></td><td·style="text-align:·left;"><code·class="inline">0..16#10ffff</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:nil/0"><code·class="inline">nil/0</code></a></td><td·style="text-align:·left;"><code·class="inline">[]</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:number/0"><code·class="inline">number/0</code></a></td><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:integer/0"><code·class="inline">integer/0</code></a>·|·<a·href="../../erts-15.2.3/doc/html/erlang.html#t:float/0"><code·class="inline">float/0</code></a></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:list/0"><code·class="inline">list/0</code></a></td><td·style="text-align:·left;"><code·class="inline">[any()]</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:maybe_improper_list/0"><code·class="inline">maybe_improper_list/0</code></a></td><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:maybe_improper_list/2"><code·class="inline">maybe_improper_list(any(),·any())</code></a></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:nonempty_list/0"><code·class="inline">nonempty_list/0</code></a></td><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:nonempty_list/1"><code·class="inline">nonempty_list(any())</code></a></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:string/0"><code·class="inline">string/0</code></a></td><td·style="text-align:·left;"><code·class="inline">[char()]</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:nonempty_string/0"><code·class="inline">nonempty_string/0</code></a></td><td·style="text-align:·left;"><code·class="inline">[char(),...]</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:iodata/0"><code·class="inline">iodata/0</code></a></td><td·style="text-align:·left;"><code·class="inline">iolist()</code>·|·<code·class="inline">binary()</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:iolist/0"><code·class="inline">iolist/0</code></a></td><td·style="text-align:·left;"><code·class="inline">maybe_improper_list(byte()</code>·|·<code·class="inline">binary()</code>·|·<code·class="inline">iolist(),·binary()</code>·|·<code·class="inline">[])</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:map/0"><code·class="inline">map/0</code></a></td><td·style="text-align:·left;"><code·class="inline">#{any()·=>·any()}</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:function/0"><code·class="inline">function/0</code></a></td><td·style="text-align:·left;"><code·class="inline">fun()</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:module/0"><code·class="inline">module/0</code></a></td><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:atom/0"><code·class="inline">atom/0</code></a></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:mfa/0"><code·class="inline">mfa/0</code></a></td><td·style="text-align:·left;"><code·class="inline">{module(),atom(),arity()}</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:arity/0"><code·class="inline">arity/0</code></a></td><td·style="text-align:·left;"><code·class="inline">0..255</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:identifier/0"><code·class="inline">identifier/0</code></a></td><td·style="text-align:·left;"><code·class="inline">pid()</code>·|·<code·class="inline">port()</code>·|·<code·class="inline">reference()</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#node/0"><code·class="inline">node/0</code></a></td><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:atom/0"><code·class="inline">atom/0</code></a></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:timeout/0"><code·class="inline">timeout/0</code></a></td><td·style="text-align:·left;"><code·class="inline">'infinity'</code>·|·<code·class="inline">non_neg_integer()</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:no_return/0"><code·class="inline">no_return/0</code></a></td><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:none/0"><code·class="inline">none/0</code></a></td></tr></tbody></table><p><em>Table:·Built-in·types,·predefined·aliases</em></p><p>In·addition,·the·following·three·built-in·types·exist·and·can·be·thought·as |
| 243 | defined·below,·though·strictly·their·"type·definition"·is·not·valid·syntax | 243 | defined·below,·though·strictly·their·"type·definition"·is·not·valid·syntax |
| 244 | according·to·the·type·language·defined·above.</p><table><thead><tr><th·style="text-align:·left;"><em>Built-in·type</em></th><th·style="text-align:·left;"><em>Can·be·thought·defined·by·the·syntax</em></th></tr></thead><tbody><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0"><code·class="inline">non_neg_integer/0</code></a></td><td·style="text-align:·left;"><code·class="inline">0..</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:pos_integer/0"><code·class="inline">pos_integer/0</code></a></td><td·style="text-align:·left;"><code·class="inline">1..</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:neg_integer/0"><code·class="inline">neg_integer/0</code></a></td><td·style="text-align:·left;"><code·class="inline">..-1</code></td></tr></tbody></table><p><em>Table:·Additional·built-in·types</em></p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>The·following·built-in·list·types·also·exist,·but·they·are·expected·to·be | 244 | according·to·the·type·language·defined·above.</p><table><thead><tr><th·style="text-align:·left;"><em>Built-in·type</em></th><th·style="text-align:·left;"><em>Can·be·thought·defined·by·the·syntax</em></th></tr></thead><tbody><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0"><code·class="inline">non_neg_integer/0</code></a></td><td·style="text-align:·left;"><code·class="inline">0..</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:pos_integer/0"><code·class="inline">pos_integer/0</code></a></td><td·style="text-align:·left;"><code·class="inline">1..</code></td></tr><tr><td·style="text-align:·left;"><a·href="../../erts-15.2.3/doc/html/erlang.html#t:neg_integer/0"><code·class="inline">neg_integer/0</code></a></td><td·style="text-align:·left;"><code·class="inline">..-1</code></td></tr></tbody></table><p><em>Table:·Additional·built-in·types</em></p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>The·following·built-in·list·types·also·exist,·but·they·are·expected·to·be |
| 245 | rarely·used.·Hence,·they·have·long·names:</p></section><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">nonempty_maybe_improper_list</span><span·class="p"·data-group-id=" | 245 | rarely·used.·Hence,·they·have·long·names:</p></section><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">nonempty_maybe_improper_list</span><span·class="p"·data-group-id="6576283360-1">(</span><span·class="p"·data-group-id="6576283360-1">)</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">nonempty_maybe_improper_list</span><span·class="p"·data-group-id="65[·...·truncated·by·diffoscope;·len:·375,·SHA:·1c1e508db95eb6fcbcbf025aa99a86d0a17c3f7f409fdb098c8b36e9a2517e8b·...·]-2">)</span><span·class="w"> |
| 246 | </span><span·class="nf">nonempty_improper_list</span><span·class="p"·data-group-id=" | 246 | </span><span·class="nf">nonempty_improper_list</span><span·class="p"·data-group-id="6576283360-5">(</span><span·class="n">Type1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Type2</span><span·class="p"·data-group-id="6576283360-5">)</span><span·class="w"> |
| 247 | </span><span·class="nf">nonempty_maybe_improper_list</span><span·class="p"·data-group-id=" | 247 | </span><span·class="nf">nonempty_maybe_improper_list</span><span·class="p"·data-group-id="6576283360-6">(</span><span·class="n">Type1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Type2</span><span·class="p"·data-group-id="6576283360-6">)</span></code></pre><p>where·the·last·two·types·define·the·set·of·Erlang·terms·one·would·expect.</p><p>Also·for·convenience,·record·notation·is·allowed·to·be·used.·Records·are |
| 248 | shorthands·for·the·corresponding·tuples:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Record</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="p">#</span><span·class="n">Erlang_Atom</span><span·class="p"·data-group-id="1444 | 248 | shorthands·for·the·corresponding·tuples:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Record</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="p">#</span><span·class="n">Erlang_Atom</span><span·class="p"·data-group-id="4541444981-1">{</span><span·class="p"·data-group-id="4541444981-1">}</span><span·class="w"> |
| 249 | ········</span><span·class="p">|</span><span·class="w">·</span><span·class="p">#</span><span·class="n">Erlang_Atom</span><span·class="p"·data-group-id="1444 | 249 | ········</span><span·class="p">|</span><span·class="w">·</span><span·class="p">#</span><span·class="n">Erlang_Atom</span><span·class="p"·data-group-id="4541444981-2">{</span><span·class="n">Fields</span><span·class="p"·data-group-id="4541444981-2">}</span></code></pre><p>Records·are·extended·to·possibly·contain·type·information.·This·is·described·in |
| 250 | <a·href="typespec.html#typeinrecords">Type·Information·in·Record·Declarations</a>.</p><h3·id="redefining-built-in-types"·class="section-heading"> | 250 | <a·href="typespec.html#typeinrecords">Type·Information·in·Record·Declarations</a>.</p><h3·id="redefining-built-in-types"·class="section-heading"> |
| 251 | ··<a·href="#redefining-built-in-types"·class="hover-link"> | 251 | ··<a·href="#redefining-built-in-types"·class="hover-link"> |
| 252 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 252 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 253 | ··</a> | 253 | ··</a> |
| 254 | ··<span·class="text">Redefining·built-in·types</span> | 254 | ··<span·class="text">Redefining·built-in·types</span> |
| 255 | </h3> | 255 | </h3> |
| 256 | <section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Change</h4><p>Starting·from·Erlang/OTP·26,·it·is·permitted·to·define·a·type·having·the·same | 256 | <section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Change</h4><p>Starting·from·Erlang/OTP·26,·it·is·permitted·to·define·a·type·having·the·same |
| 257 | name·as·a·built-in·type.</p></section><p>It·is·recommended·to·avoid·deliberately·reusing·built-in·names·because·it·can·be | 257 | name·as·a·built-in·type.</p></section><p>It·is·recommended·to·avoid·deliberately·reusing·built-in·names·because·it·can·be |
| 258 | confusing.·However,·when·an·Erlang/OTP·release·introduces·a·new·type,·code·that | 258 | confusing.·However,·when·an·Erlang/OTP·release·introduces·a·new·type,·code·that |
| 259 | happened·to·define·its·own·type·having·the·same·name·will·continue·to·work.</p><p>As·an·example,·imagine·that·the·Erlang/OTP·42·release·introduces·a·new·type | 259 | happened·to·define·its·own·type·having·the·same·name·will·continue·to·work.</p><p>As·an·example,·imagine·that·the·Erlang/OTP·42·release·introduces·a·new·type |
| 260 | <code·class="inline">gadget()</code>·defined·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">type</span><span·class="w">·</span><span·class="nf">gadget</span><span·class="p"·data-group-id="7460970397-1">(</span><span·class="p"·data-group-id="7460970397-1">)</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="7460970397-2">{</span><span·class="ss">'gadget'</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">reference</span><span·class="p"·data-group-id="7460970397-3">(</span><span·class="p"·data-group-id="7460970397-3">)</span><span·class="p"·data-group-id="7460970397-2">}</span><span·class="p">.</span></code></pre><p>Further·imagine·that·some·code·has·its·own·(different)·definition·of·<code·class="inline">gadget()</code>, | ||
| 261 | 260 | <code·class="inline">gadget()</code>·defined·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">type</span><span·class="w">·</span><span·class="nf">gadget</span><span·class="p"·data-group-id="3580007921-1[·...·truncated·by·diffoscope;·len:·638,·SHA:·06f85ef6f68f3fe60fe76550c727ef3e01c887adc1b540a7544287104efcb842·...·] | |
| 261 | for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">type</span><span·class="w">·</span><span·class="nf">gadget</span><span·class="p"·data-group-id="8379286973-1">(</span><span·class="p"·data-group-id="8379286973-1">)</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="8379286973-2">#{</span><span·class="p"·data-group-id="8379286973-2">}</span><span·class="p">.</span></code></pre><p>Since·redefinitions·are·allowed,·the·code·will·still·compile·(but·with·a | ||
| 262 | warning),·and·Dialyzer·will·not·emit·any·additional·warnings.</p><h2·id="type-declarations-of-user-defined-types"·class="section-heading"> | 262 | warning),·and·Dialyzer·will·not·emit·any·additional·warnings.</p><h2·id="type-declarations-of-user-defined-types"·class="section-heading"> |
| 263 | ··<a·href="#type-declarations-of-user-defined-types"·class="hover-link"> | 263 | ··<a·href="#type-declarations-of-user-defined-types"·class="hover-link"> |
| 264 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 264 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 265 | ··</a> | 265 | ··</a> |
| 266 | ··<span·class="text">Type·Declarations·of·User-Defined·Types</span> | 266 | ··<span·class="text">Type·Declarations·of·User-Defined·Types</span> |
| 267 | </h2> | 267 | </h2> |
| 268 | <p>As·seen,·the·basic·syntax·of·a·type·is·an·atom·followed·by·closed·parentheses. | 268 | <p>As·seen,·the·basic·syntax·of·a·type·is·an·atom·followed·by·closed·parentheses. |
| 269 | New·types·are·declared·using·<code·class="inline">-type</code>·and·<code·class="inline">-opaque</code>·attributes·as·in·the | 269 | New·types·are·declared·using·<code·class="inline">-type</code>·and·<code·class="inline">-opaque</code>·attributes·as·in·the |
| 270 | following:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">type</span><span·class="w">·</span><span·class="nf">my_struct_type</span><span·class="p"·data-group-id=" | 270 | following:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">type</span><span·class="w">·</span><span·class="nf">my_struct_type</span><span·class="p"·data-group-id="1661036463-1">(</span><span·class="p"·data-group-id="1661036463-1">)</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Type</span><span·class="p">.</span><span·class="w"> |
| 271 | </span><span·class="p">-</span><span·class="na">opaque</span><span·class="w">·</span><span·class="nf">my_opaq_type</span><span·class="p"·data-group-id=" | 271 | </span><span·class="p">-</span><span·class="na">opaque</span><span·class="w">·</span><span·class="nf">my_opaq_type</span><span·class="p"·data-group-id="1661036463-2">(</span><span·class="p"·data-group-id="1661036463-2">)</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Type</span><span·class="p">.</span></code></pre><p>The·type·name·is·the·atom·<code·class="inline">my_struct_type</code>,·followed·by·parentheses.·<code·class="inline">Type</code>·is·a |
| 272 | type·as·defined·in·the·previous·section.·A·current·restriction·is·that·<code·class="inline">Type</code> | 272 | type·as·defined·in·the·previous·section.·A·current·restriction·is·that·<code·class="inline">Type</code> |
| 273 | can·contain·only·predefined·types,·or·user-defined·types·which·are·either·of·the | 273 | can·contain·only·predefined·types,·or·user-defined·types·which·are·either·of·the |
| 274 | following:</p><ul><li>Module-local·type,·that·is,·with·a·definition·that·is·present·in·the·code·of | 274 | following:</p><ul><li>Module-local·type,·that·is,·with·a·definition·that·is·present·in·the·code·of |
| 275 | the·module</li><li>Remote·type,·that·is,·type·defined·in,·and·exported·by,·other·modules;·more | 275 | the·module</li><li>Remote·type,·that·is,·type·defined·in,·and·exported·by,·other·modules;·more |
| 276 | about·this·soon.</li></ul><p>For·module-local·types,·the·restriction·that·their·definition·exists·in·the | 276 | about·this·soon.</li></ul><p>For·module-local·types,·the·restriction·that·their·definition·exists·in·the |
| 277 | module·is·enforced·by·the·compiler·and·results·in·a·compilation·error.·(A | 277 | module·is·enforced·by·the·compiler·and·results·in·a·compilation·error.·(A |
| 278 | similar·restriction·currently·exists·for·records.)</p><p>Type·declarations·can·also·be·parameterized·by·including·type·variables·between | 278 | similar·restriction·currently·exists·for·records.)</p><p>Type·declarations·can·also·be·parameterized·by·including·type·variables·between |
| 279 | the·parentheses.·The·syntax·of·type·variables·is·the·same·as·Erlang·variables, | 279 | the·parentheses.·The·syntax·of·type·variables·is·the·same·as·Erlang·variables, |
| 280 | that·is,·starts·with·an·upper-case·letter.·These·variables·is·to | 280 | that·is,·starts·with·an·upper-case·letter.·These·variables·is·to |
| 281 | appear·on·the·RHS·of·the·definition.·A·concrete·example·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">type</span><span·class="w">·</span><span·class="nf">orddict</span><span·class="p"·data-group-id="6 | 281 | appear·on·the·RHS·of·the·definition.·A·concrete·example·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">type</span><span·class="w">·</span><span·class="nf">orddict</span><span·class="p"·data-group-id="6667684460-1">(</span><span·class="n">Key</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Val</span><span·class="p"·data-group-id="6667684460-1">)</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·clas[·...·truncated·by·diffoscope;·len:·313,·SHA:·9762de72250cb02cf8bc36e031783891c2a6458d991248664ed63ef0a52aceae·...·]0-2">]</span><span·class="p">.</span></code></pre><p>A·module·can·export·some·types·to·declare·that·other·modules·are·allowed·to |
| 282 | refer·to·them·as·<em>remote·types</em>.·This·declaration·has·the·following·form:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">export_type</span><span·class="p"·data-group-id="8 | 282 | refer·to·them·as·<em>remote·types</em>.·This·declaration·has·the·following·form:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">export_type</span><span·class="p"·data-group-id="8376712302-1">(</span><span·class="p"·data-group-id="8376712302-2">[</span><span·class="n">T1</span><span·class="o">/</span><span·class="n">A1</span><span·class="p">,</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class=[·...·truncated·by·diffoscope;·len:·964,·SHA:·9da1e29a7ac35dfe82e7fd52d0f5c9d57e64c1c4ee6f5beb78f1e5df3f4c9a12·...·]-1">)</span><span·class="p">.</span></code></pre><p>Assuming·that·these·types·are·exported·from·module·<code·class="inline">'mod'</code>,·you·can·refer·to |
| 283 | them·from·other·modules·using·remote·type·expressions·like·the·following:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mod</span><span·class="p">:</span><span·class="nf">my_struct_type</span><span·class="p"·data-group-id="5 | 283 | them·from·other·modules·using·remote·type·expressions·like·the·following:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mod</span><span·class="p">:</span><span·class="nf">my_struct_type</span><span·class="p"·data-group-id="0536321989-1">(</span><span·class="p"·data-group-id="0536321989-1">)</span><span·class="w"> |
| 284 | </span><span·class="nc">mod</span><span·class="p">:</span><span·class="nf">orddict</span><span·class="p"·data-group-id="5 | 284 | </span><span·class="nc">mod</span><span·class="p">:</span><span·class="nf">orddict</span><span·class="p"·data-group-id="0536321989-2">(</span><span·class="nf">atom</span><span·class="p"·data-group-id="0536321989-3">(</span><span·class="p"·data-group-id="0536321989-3">)</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-gro[·...·truncated·by·diffoscope;·len:·123,·SHA:·540894a13553a684293907d869d869ea358b20e9474e7642e2cf573729e06b47·...·]-2">)</span></code></pre><p>It·is·not·allowed·to·refer·to·types·that·are·not·declared·as·exported.</p><p>Types·declared·as·<code·class="inline">opaque</code>·represent·sets·of·terms·whose·structure·is·not |
| 285 | supposed·to·be·visible·from·outside·of·their·defining·module.·That·is,·only·the | 285 | supposed·to·be·visible·from·outside·of·their·defining·module.·That·is,·only·the |
| 286 | module·defining·them·is·allowed·to·depend·on·their·term·structure.·Consequently, | 286 | module·defining·them·is·allowed·to·depend·on·their·term·structure.·Consequently, |
| 287 | such·types·do·not·make·much·sense·as·module·local·-·module·local·types·are·not | 287 | such·types·do·not·make·much·sense·as·module·local·-·module·local·types·are·not |
| 288 | accessible·by·other·modules·anyway·-·and·is·always·to·be·exported.</p><p>Read·more·on·<a·href="opaques.html">Opaques</a></p><p><a·href=""·id="typeinrecords"></a></p><h2·id="type-information-in-record-declarations"·class="section-heading"> | 288 | accessible·by·other·modules·anyway·-·and·is·always·to·be·exported.</p><p>Read·more·on·<a·href="opaques.html">Opaques</a></p><p><a·href=""·id="typeinrecords"></a></p><h2·id="type-information-in-record-declarations"·class="section-heading"> |
| 289 | ··<a·href="#type-information-in-record-declarations"·class="hover-link"> | 289 | ··<a·href="#type-information-in-record-declarations"·class="hover-link"> |
| 290 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 290 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 291 | ··</a> | 291 | ··</a> |
| 292 | ··<span·class="text">Type·Information·in·Record·Declarations</span> | 292 | ··<span·class="text">Type·Information·in·Record·Declarations</span> |
| 293 | </h2> | 293 | </h2> |
| 294 | <p>The·types·of·record·fields·can·be·specified·in·the·declaration·of·the·record. | 294 | <p>The·types·of·record·fields·can·be·specified·in·the·declaration·of·the·record. |
| 295 | The·syntax·for·this·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 295 | The·syntax·for·this·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="5679279254-1">(</span><span·class="ss">rec</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5679279254-2">{</span><span·class="ss">field1</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><spa[·...·truncated·by·diffoscope;·len:·422,·SHA:·8af504a0cc7b3655165ec6fa70b83614dd6c8a96efb03fef9e5b517fe5e70c17·...·]-1">)</span><span·class="p">.</span></code></pre><p>For·fields·without·type·annotations,·their·type·defaults·to·<code·class="inline">any()</code>.·That·is,·the |
| 296 | previous·example·is·a·shorthand·for·the·following:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 296 | previous·example·is·a·shorthand·for·the·following:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="9508964140-1">(</span><span·class="ss">rec</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9508964140-2">{</span><span·class="ss">field1</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><spa[·...·truncated·by·diffoscope;·len:·651,·SHA:·977461d10efd79860581fb4cf1a525d3625f1edbfce953de03f5418fdc1e2324·...·]-1">)</span><span·class="p">.</span></code></pre><p>In·the·presence·of·initial·values·for·fields,·the·type·must·be·declared·after |
| 297 | the·initialization,·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 297 | the·initialization,·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="9677484983-1">(</span><span·class="ss">rec</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9677484983-2">{</span><span·class="ss">field1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><spa[·...·truncated·by·diffoscope;·len:·698,·SHA:·ff67652b36ca914c60a09e9d8ae6e68cc77f688bd30e17fbbc89d1fb8d7ba6cc·...·]-1">)</span><span·class="p">.</span></code></pre><p>The·initial·values·for·fields·are·to·be·compatible·with·(that·is,·a·member·of) |
| 298 | the·corresponding·types.·This·is·checked·by·the·compiler·and·results·in·a | 298 | the·corresponding·types.·This·is·checked·by·the·compiler·and·results·in·a |
| 299 | compilation·error·if·a·violation·is·detected.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Change</h4><p>Before·Erlang/OTP·19,·for·fields·without·initial·values,·the·singleton·type | 299 | compilation·error·if·a·violation·is·detected.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Change</h4><p>Before·Erlang/OTP·19,·for·fields·without·initial·values,·the·singleton·type |
| 300 | <code·class="inline">'undefined'</code>·was·added·to·all·declared·types.·In·other·words,·the·following | 300 | <code·class="inline">'undefined'</code>·was·added·to·all·declared·types.·In·other·words,·the·following |
| 301 | two·record·declarations·had·identical·effects:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 301 | two·record·declarations·had·identical·effects:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="8188673366-1">(</span><span·class="ss">rec</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8188673366-2">{</span><span·class="ss">f1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·cl[·...·truncated·by·diffoscope;·len:·239,·SHA:·ff93fada225490cca4f24fb8fed6e1040ea1ada748786c3a46097a6d62ca616b·...·]-3">)</span><span·class="p">,</span><span·class="w"> |
| 302 | ·············</span><span·class="ss">f2</span><span·class="w">······</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">float</span><span·class="p"·data-group-id=" | 302 | ·············</span><span·class="ss">f2</span><span·class="w">······</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">float</span><span·class="p"·data-group-id="8188673366-4">(</span><span·class="p"·data-group-id="8188673366-4">)</span><span·class="p">,</span><span·class="w"> |
| 303 | ·············</span><span·class="ss">f3</span><span·class="w">······</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">'a'</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">'b'</span><span·class="p"·data-group-id=" | 303 | ·············</span><span·class="ss">f3</span><span·class="w">······</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">'a'</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">'b'</span><span·class="p"·data-group-id="8188673366-2">}</span><span·class="p"·data-group-id="8188673366-1">)</span><span·class="p">.</span><span·class="w"> |
| 304 | </span><span·class="w"> | 304 | </span><span·class="w"> |
| 305 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 305 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="8188673366-5">(</span><span·class="ss">rec</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8188673366-6">{</span><span·class="ss">f1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·cl[·...·truncated·by·diffoscope;·len:·239,·SHA:·8768b7a37d6bd50073b47868a3492bf691b7d4be1fb1e22fedd912d383869649·...·]-7">)</span><span·class="p">,</span><span·class="w"> |
| 306 | ··············</span><span·class="ss">f2</span><span·class="w">······</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">'undefined'</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="nf">float</span><span·class="p"·data-group-id=" | 306 | ··············</span><span·class="ss">f2</span><span·class="w">······</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">'undefined'</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="nf">float</span><span·class="p"·data-group-id="8188673366-8">(</span><span·class="p"·data-group-id="8188673366-8">)</span><span·class="p">,</span><span·class="w"> |
| 307 | ··············</span><span·class="ss">f3</span><span·class="w">······</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">'undefined'</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">'a'</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">'b'</span><span·class="p"·data-group-id=" | 307 | ··············</span><span·class="ss">f3</span><span·class="w">······</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">'undefined'</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">'a'</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">'b'</span><span·class="p"·data-group-id="8188673366-6">}</span><span·class="p"·data-group-id="8188673366-5">)</span><span·class="p">.</span></code></pre><p>This·is·no·longer·the·case.·If·you·require·<code·class="inline">'undefined'</code>·in·your·record·field |
| 308 | type,·you·must·explicitly·add·it·to·the·typespec,·as·in·the·2nd·example.</p></section><p>Any·record,·containing·type·information·or·not,·once·defined,·can·be·used·as·a | 308 | type,·you·must·explicitly·add·it·to·the·typespec,·as·in·the·2nd·example.</p></section><p>Any·record,·containing·type·information·or·not,·once·defined,·can·be·used·as·a |
| 309 | type·using·the·following·syntax:</p><pre><code·class="text">#rec{}</code></pre><p>In·addition,·the·record·fields·can·be·further·specified·when·using·a·record·type | 309 | type·using·the·following·syntax:</p><pre><code·class="text">#rec{}</code></pre><p>In·addition,·the·record·fields·can·be·further·specified·when·using·a·record·type |
| 310 | by·adding·type·information·about·the·field·as·follows:</p><pre><code·class="text">#rec{some_field·::·Type}</code></pre><p>Any·unspecified·fields·are·assumed·to·have·the·type·in·the·original·record | 310 | by·adding·type·information·about·the·field·as·follows:</p><pre><code·class="text">#rec{some_field·::·Type}</code></pre><p>Any·unspecified·fields·are·assumed·to·have·the·type·in·the·original·record |
| 311 | declaration.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>When·records·are·used·to·create·patterns·for·ETS·and·Mnesia·match·functions, | 311 | declaration.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>When·records·are·used·to·create·patterns·for·ETS·and·Mnesia·match·functions, |
| 312 | Dialyzer·may·need·some·help·not·to·emit·bad·warnings.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">type</span><span·class="w">·</span><span·class="nf">height</span><span·class="p"·data-group-id=" | 312 | Dialyzer·may·need·some·help·not·to·emit·bad·warnings.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">type</span><span·class="w">·</span><span·class="nf">height</span><span·class="p"·data-group-id="3877956705-1">(</span><span·class="p"·data-group-id="3877956705-1">)</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">pos_integer</span><span·class="p"·data-group-id="3877956705-2">(</sp[·...·truncated·by·diffoscope;·len:·44,·SHA:·585fd8d19bc1919e86a8690ecf5152ae7c2e965f9bf24be70ba989292cc6d46a·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 313 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 313 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="3877956705-3">(</span><span·class="ss">person</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3877956705-4">{</span><span·class="ss">name</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><sp[·...·truncated·by·diffoscope;·len:·561,·SHA:·644c9f216293d1fea1a65b77b3bbcb764c766f22e930fd90ece1196c07475605·...·]-3">)</span><span·class="p">.</span><span·class="w"> |
| 314 | </span><span·class="nf">lookup</span><span·class="p"·data-group-id=" | 314 | </span><span·class="nf">lookup</span><span·class="p"·data-group-id="3877956705-7">(</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tab</span><span·class="p"·data-group-id="3877956705-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 315 | ····</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">match_object</span><span·class="p"·data-group-id=" | 315 | ····</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">match_object</span><span·class="p"·data-group-id="3877956705-8">(</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id="3877956705-9">{</span><span·class="ss">name</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·347,·SHA:·e0dce0024ee5da23bf2e8eedefcec64568e6c31baf2d08d5da41a2b3e6730b30·...·]-8">)</span><span·class="p">.</span></code></pre><p>Dialyzer·will·emit·a·warning·since·<code·class="inline">'_'</code>·is·not·in·the·type·of·record·field |
| 316 | <code·class="inline">height</code>.</p><p>The·recommended·way·of·dealing·with·this·is·to·declare·the·smallest·record | 316 | <code·class="inline">height</code>.</p><p>The·recommended·way·of·dealing·with·this·is·to·declare·the·smallest·record |
| 317 | field·types·to·accommodate·all·your·needs,·and·then·create·refinements·as | 317 | field·types·to·accommodate·all·your·needs,·and·then·create·refinements·as |
| 318 | needed.·The·modified·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 318 | needed.·The·modified·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="6680646653-1">(</span><span·class="ss">person</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6680646653-2">{</span><span·class="ss">name</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><sp[·...·truncated·by·diffoscope;·len:·667,·SHA:·b48da1dfc29a501c112862ace7e931b5118a723f7f0df3b4666b9734758bf8e5·...·]3-1">)</span><span·class="p">.</span><span·class="w"> |
| 319 | </span><span·class="w"> | 319 | </span><span·class="w"> |
| 320 | </span><span·class="p">-</span><span·class="na">type</span><span·class="w">·</span><span·class="nf">person</span><span·class="p"·data-group-id=" | 320 | </span><span·class="p">-</span><span·class="na">type</span><span·class="w">·</span><span·class="nf">person</span><span·class="p"·data-group-id="6680646653-5">(</span><span·class="p"·data-group-id="6680646653-5">)</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id="[·...·truncated·by·diffoscope;·len:·324,·SHA:·308661d109a0eca21d40bc222ccf4e45896fae30f205ff7636ab338777ca95a5·...·]3-6">}</span><span·class="p">.</span></code></pre><p>In·specifications·and·type·declarations·the·type·<code·class="inline">person()</code>·is·to·be·preferred |
| 321 | before·<code·class="inline">#person{}</code>.</p></section><h2·id="specifications-for-functions"·class="section-heading"> | 321 | before·<code·class="inline">#person{}</code>.</p></section><h2·id="specifications-for-functions"·class="section-heading"> |
| 322 | ··<a·href="#specifications-for-functions"·class="hover-link"> | 322 | ··<a·href="#specifications-for-functions"·class="hover-link"> |
| 323 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 323 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 324 | ··</a> | 324 | ··</a> |
| 325 | ··<span·class="text">Specifications·for·Functions</span> | 325 | ··<span·class="text">Specifications·for·Functions</span> |
| 326 | </h2> | 326 | </h2> |
| 327 | <p>A·specification·(or·contract)·for·a·function·is·given·using·the·<code·class="inline">-spec</code> | 327 | <p>A·specification·(or·contract)·for·a·function·is·given·using·the·<code·class="inline">-spec</code> |
| 328 | attribute.·The·general·format·is·as·follows:</p><pre><code·class="text">-spec·Function(ArgType1,·...,·ArgTypeN)·->·ReturnType.</code></pre><p>An·implementation·of·the·function·with·the·same·name·<code·class="inline">Function</code>·must·exist·in | 328 | attribute.·The·general·format·is·as·follows:</p><pre><code·class="text">-spec·Function(ArgType1,·...,·ArgTypeN)·->·ReturnType.</code></pre><p>An·implementation·of·the·function·with·the·same·name·<code·class="inline">Function</code>·must·exist·in |
| 329 | the·current·module,·and·the·arity·of·the·function·must·match·the·number·of | 329 | the·current·module,·and·the·arity·of·the·function·must·match·the·number·of |
| 330 | arguments,·otherwise·the·compilation·fails.</p><p>The·following·longer·format·with·module·name·is·also·valid·as·long·as·<code·class="inline">Module</code> | 330 | arguments,·otherwise·the·compilation·fails.</p><p>The·following·longer·format·with·module·name·is·also·valid·as·long·as·<code·class="inline">Module</code> |
| 331 | is·the·name·of·the·current·module.·This·can·be·useful·for·documentation | 331 | is·the·name·of·the·current·module.·This·can·be·useful·for·documentation |
| 332 | purposes.</p><pre><code·class="text">-spec·Module:Function(ArgType1,·...,·ArgTypeN)·->·ReturnType.</code></pre><p>Also,·for·documentation·purposes,·argument·names·can·be·given:</p><pre><code·class="text">-spec·Function(ArgName1·::·Type1,·...,·ArgNameN·::·TypeN)·->·RT.</code></pre><p>A·function·specification·can·be·overloaded.·That·is,·it·can·have·several·types, | 332 | purposes.</p><pre><code·class="text">-spec·Module:Function(ArgType1,·...,·ArgTypeN)·->·ReturnType.</code></pre><p>Also,·for·documentation·purposes,·argument·names·can·be·given:</p><pre><code·class="text">-spec·Function(ArgName1·::·Type1,·...,·ArgNameN·::·TypeN)·->·RT.</code></pre><p>A·function·specification·can·be·overloaded.·That·is,·it·can·have·several·types, |
| 333 | separated·by·a·semicolon·(<code·class="inline">;</code>).·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">foo</span><span·class="p"·data-group-id=" | 333 | separated·by·a·semicolon·(<code·class="inline">;</code>).·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">foo</span><span·class="p"·data-group-id="3338065157-1">(</span><span·class="n">T1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">T2</span><span·class="p"·data-group-id="3338065157-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">T3</span><span·class="p">;</span><span·class="w"> |
| 334 | ·········</span><span·class="p"·data-group-id=" | 334 | ·········</span><span·class="p"·data-group-id="3338065157-2">(</span><span·class="n">T4</span><span·class="p">,</span><span·class="w">·</span><span·class="n">T5</span><span·class="p"·data-group-id="3338065157-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">T6</span><span·class="p">.</span></code></pre><p>A·current·restriction,·which·currently·results·in·a·warning·by·Dialyzer,·is·that |
| 335 | the·domains·of·the·argument·types·cannot·overlap.·For·example,·the·following | 335 | the·domains·of·the·argument·types·cannot·overlap.·For·example,·the·following |
| 336 | specification·results·in·a·warning:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">foo</span><span·class="p"·data-group-id="1674205752-1">(</span><span·class="nf">pos_integer</span><span·class="p"·data-group-id="1674205752-2">(</span><span·class="p"·data-group-id="1674205752-2">)</span><span·class="p"·data-group-id="1674205752-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">pos_integer</span><span·class="p"·data-group-id="1674205752-3">(</span><span·class="p"·data-group-id="1674205752-3">)</span><span·class="p">;</span><span·class="w"> | ||
| 337 | ···· | 336 | specification·results·in·a·warning:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">foo</span><span·class="p"·data-group-id="9178493918-1">(</span><span·class="[·...·truncated·by·diffoscope;·len:·438,·SHA:·aad925de9ddffef6a99cbff1466b70559f66dcbd9718487b8872faf3f681e1c2·...·] |
| 337 | ·········</span><span·class="p"·data-group-id="9178493918-4">(</span><span·class="nf">integer</span><span·class="p"·data-group-id="9178493918-5">(</span><span·class="p"·data-group-id="9178493918-5">)</span><span·class="p"·data-group-id="9178493918-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="9178493918-6">(</span><span·class="p"·data-group-id="9178493918-6">)</span><span·class="p">.</span></code></pre><p>Type·variables·can·be·used·in·specifications·to·specify·relations·for·the·input | ||
| 338 | and·output·arguments·of·a·function.·For·example,·the·following·specification | 338 | and·output·arguments·of·a·function.·For·example,·the·following·specification |
| 339 | defines·the·type·of·a·polymorphic·identity·function:</p><pre><code·class="text">-spec·id(X)·->·X.</code></pre><p>Notice·that·the·above·specification·does·not·restrict·the·input·and·output·type | 339 | defines·the·type·of·a·polymorphic·identity·function:</p><pre><code·class="text">-spec·id(X)·->·X.</code></pre><p>Notice·that·the·above·specification·does·not·restrict·the·input·and·output·type |
| 340 | in·any·way.·These·types·can·be·constrained·by·guard-like·subtype·constraints·and | 340 | in·any·way.·These·types·can·be·constrained·by·guard-like·subtype·constraints·and |
| 341 | provide·bounded·quantification:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">id</span><span·class="p"·data-group-id=" | 341 | provide·bounded·quantification:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">id</span><span·class="p"·data-group-id="3802868740-1">(</span><span·class="n">X</span><span·class="p"·data-group-id="3802868740-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">X</span><span·class="w">·</span><span·class="k">when</span><span·[·...·truncated·by·diffoscope;·len:·261,·SHA:·300c5cb2f3e5254e336dd5c9a87ddeb04dccefe59c85eadf041e8ffa4ebfe752·...·]-2">)</span><span·class="p">.</span></code></pre><p>Currently,·the·<code·class="inline">::</code>·constraint·(read·as·"is·a·subtype·of")·is·the·only·guard |
| 342 | constraint·that·can·be·used·in·the·<code·class="inline">when</code>·part·of·a·<code·class="inline">-spec</code>·attribute.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>The·above·function·specification·uses·multiple·occurrences·of·the·same·type | 342 | constraint·that·can·be·used·in·the·<code·class="inline">when</code>·part·of·a·<code·class="inline">-spec</code>·attribute.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>The·above·function·specification·uses·multiple·occurrences·of·the·same·type |
| 343 | variable.·That·provides·more·type·information·than·the·following·function | 343 | variable.·That·provides·more·type·information·than·the·following·function |
| 344 | specification,·where·the·type·variables·are·missing:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">id</span><span·class="p"·data-group-id=" | 344 | specification,·where·the·type·variables·are·missing:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">id</span><span·class="p"·data-group-id="0588157797-1">(</span><span·class="nf">tuple</span><span·class="p"·data-group-id="0588157797-2">(</span><span·class="p"·data-group-id="0588157797-2">)</span><span·class="p"·data-group-id="0588157797-1">)</span><span·class="w">·</span><span·class="p">-><[·...·truncated·by·diffoscope;·len:·153,·SHA:·64fdc2e9c0ddfe033c70001425ba062456a1e38e40a2d370c0d95d79d9f55527·...·]-3">)</span><span·class="p">.</span></code></pre><p>The·latter·specification·says·that·the·function·takes·some·tuple·and·returns |
| 345 | some·tuple.·The·specification·with·the·<code·class="inline">X</code>·type·variable·specifies·that·the | 345 | some·tuple.·The·specification·with·the·<code·class="inline">X</code>·type·variable·specifies·that·the |
| 346 | function·takes·a·tuple·and·returns·<em>the·same</em>·tuple.</p><p>However,·it·is·up·to·the·tools·that·process·the·specifications·to·choose | 346 | function·takes·a·tuple·and·returns·<em>the·same</em>·tuple.</p><p>However,·it·is·up·to·the·tools·that·process·the·specifications·to·choose |
| 347 | whether·to·take·this·extra·information·into·account·or·not.</p></section><p>The·scope·of·a·<code·class="inline">::</code>·constraint·is·the·<code·class="inline">(...)·->·RetType</code>·specification·after | 347 | whether·to·take·this·extra·information·into·account·or·not.</p></section><p>The·scope·of·a·<code·class="inline">::</code>·constraint·is·the·<code·class="inline">(...)·->·RetType</code>·specification·after |
| 348 | which·it·appears.·To·avoid·confusion,·it·is·suggested·that·different·variables | 348 | which·it·appears.·To·avoid·confusion,·it·is·suggested·that·different·variables |
| 349 | are·used·in·different·constituents·of·an·overloaded·contract,·as·shown·in·the | 349 | are·used·in·different·constituents·of·an·overloaded·contract,·as·shown·in·the |
| 350 | following·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">foo</span><span·class="p"·data-group-id="5151129936-1">(</span><span·class="p"·data-group-id="5151129936-2">{</span><span·class="n">X</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="5151129936-3">(</span><span·class="p"·data-group-id="5151129936-3">)</span><span·class="p"·data-group-id="5151129936-2">}</span><span·class="p"·data-group-id="5151129936-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">X</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="n">X</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="5151129936-4">(</span><span·class="p"·data-group-id="5151129936-4">)</span><span·class="p">;</span><span·class="w"> | ||
| 351 | · | 350 | following·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">foo</span><span·class="p"·data-group-id="1042651466-1">(</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·807,·SHA:·85186f41a6a4e20c9f6ba97bd50fa0593a3cb17bfc94f7d083a0709dc5ffccdf·...·] |
| 351 | ·········</span><span·class="p"·data-group-id="1042651466-5">(</span><span·class="p"·data-group-id="1042651466-6">[</span><span·class="n">Y</span><span·class="p"·data-group-id="1042651466-6">]</span><span·class="p"·data-group-id="1042651466-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Y</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="n">Y</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">number</span><span·class="p"·data-group-id="1042651466-7">(</span><span·class="p"·data-group-id="1042651466-7">)</span><span·class="p">.</span></code></pre><p>Some·functions·in·Erlang·are·not·meant·to·return;·either·because·they·define | ||
| 352 | servers·or·because·they·are·used·to·throw·exceptions,·as·in·the·following | 352 | servers·or·because·they·are·used·to·throw·exceptions,·as·in·the·following |
| 353 | function:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">my_error</span><span·class="p"·data-group-id=" | 353 | function:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">my_error</span><span·class="p"·data-group-id="8342480220-1">(</span><span·class="n">Err</span><span·class="p"·data-group-id="8342480220-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">throw</span><span·class="p"·data-group-id="8342480220-2">(</sp[·...·truncated·by·diffoscope;·len:·253,·SHA:·7c857bdd5424429247b72e5ee8dd7cc9b4548f2b151ca7d8b2b15cf09e2c1005·...·]-2">)</span><span·class="p">.</span></code></pre><p>For·such·functions,·it·is·recommended·to·use·the·special·<a·href="../../erts-15.2.3/doc/html/erlang.html#t:no_return/0"><code·class="inline">no_return/0</code></a>·type |
| 354 | for·their·"return",·through·a·contract·of·the·following·form:</p><pre><code·class="text">-spec·my_error(term())·->·no_return().</code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Erlang·uses·the·shorthand·version·<code·class="inline">_</code>·as·an·anonymous·type·variable·equivalent | 354 | for·their·"return",·through·a·contract·of·the·following·form:</p><pre><code·class="text">-spec·my_error(term())·->·no_return().</code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Erlang·uses·the·shorthand·version·<code·class="inline">_</code>·as·an·anonymous·type·variable·equivalent |
| 355 | to·<a·href="../../erts-15.2.3/doc/html/erlang.html#t:term/0"><code·class="inline">term/0</code></a>·or·<a·href="../../erts-15.2.3/doc/html/erlang.html#t:any/0"><code·class="inline">any/0</code></a>.·For·example,·the·following·function</p><pre><code·class="text">-spec·Function(string(),·_)·->·string().</code></pre><p>is·equivalent·to:</p><pre><code·class="text">-spec·Function(string(),·any())·->·string().</code></pre></section> | 355 | to·<a·href="../../erts-15.2.3/doc/html/erlang.html#t:term/0"><code·class="inline">term/0</code></a>·or·<a·href="../../erts-15.2.3/doc/html/erlang.html#t:any/0"><code·class="inline">any/0</code></a>.·For·example,·the·following·function</p><pre><code·class="text">-spec·Function(string(),·_)·->·string().</code></pre><p>is·equivalent·to:</p><pre><code·class="text">-spec·Function(string(),·any())·->·string().</code></pre></section> |
| 356 | </div> | 356 | </div> |
| 357 | <div·class="bottom-actions"·id="bottom-actions"> | 357 | <div·class="bottom-actions"·id="bottom-actions"> |
| 358 | ··<div·class="bottom-actions-item"> | 358 | ··<div·class="bottom-actions-item"> |
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| 149 | occurrences·of·<code·class="inline">maybe</code>·without·quotes.</p><p><a·href=""·id="float_matching"></a></p><h3·id="0-0-and-0-0-will-no-longer-be-exactly-equal"·class="section-heading"> | 149 | occurrences·of·<code·class="inline">maybe</code>·without·quotes.</p><p><a·href=""·id="float_matching"></a></p><h3·id="0-0-and-0-0-will-no-longer-be-exactly-equal"·class="section-heading"> |
| 150 | ··<a·href="#0-0-and-0-0-will-no-longer-be-exactly-equal"·class="hover-link"> | 150 | ··<a·href="#0-0-and-0-0-will-no-longer-be-exactly-equal"·class="hover-link"> |
| 151 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 151 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 152 | ··</a> | 152 | ··</a> |
| 153 | ··<span·class="text">0.0·and·-0.0·will·no·longer·be·exactly·equal</span> | 153 | ··<span·class="text">0.0·and·-0.0·will·no·longer·be·exactly·equal</span> |
| 154 | </h3> | 154 | </h3> |
| 155 | <p>Currently,·the·floating·point·numbers·<code·class="inline">0.0</code>·and·<code·class="inline">-0.0</code>·have·distinct·internal | 155 | <p>Currently,·the·floating·point·numbers·<code·class="inline">0.0</code>·and·<code·class="inline">-0.0</code>·have·distinct·internal |
| 156 | representations.·That·can·be·seen·if·they·are·converted·to·binaries:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="p"·data-group-id=" | 156 | representations.·That·can·be·seen·if·they·are·converted·to·binaries:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="p"·data-group-id="7528086839-1"><<</span><span·class="mf">0.0</span><span·class="o">/</span><span·class="nb">float</span><span·class="p"·data-group-id="7528086839-1">>></span><span·class="p">.</span><span·class="w"> |
| 157 | </span><span·class="p"·data-group-id=" | 157 | </span><span·class="p"·data-group-id="7528086839-2"><<</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·[·...·truncated·by·diffoscope;·len:·182,·SHA:·8a24917b42012071d60fe5cee39b8fa63a327640d942ca9b44bb5cfe33ab870c·...·]-2">>></span><span·class="gp·unselectable"> |
| 158 | 2>·</span><span·class="p"·data-group-id=" | 158 | 2>·</span><span·class="p"·data-group-id="7528086839-3"><<</span><span·class="o">-</span><span·class="mf">0.0</span><span·class="o">/</span><span·class="nb">float</span><span·class="p"·data-group-id="7528086839-3">>></span><span·class="p">.</span><span·class="w"> |
| 159 | </span><span·class="p"·data-group-id=" | 159 | </span><span·class="p"·data-group-id="7528086839-4"><<</span><span·class="mi">128</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><spa[·...·truncated·by·diffoscope;·len:·184,·SHA:·add27f1ef6a331890dc15f6fbb70da28b5cb6e916639bc665d0157e9c0dd9737·...·]-4">>></span></code></pre><p>However,·when·they·are·matched·against·each·other·or·compared·using·the·<code·class="inline">=:=</code> |
| 160 | operator,·they·are·considered·to·be·equal.·Thus,·<code·class="inline">0.0·=:=·-0.0</code>·currently | 160 | operator,·they·are·considered·to·be·equal.·Thus,·<code·class="inline">0.0·=:=·-0.0</code>·currently |
| 161 | returns·<code·class="inline">true</code>.</p><p>In·Erlang/OTP·27,·<code·class="inline">0.0·=:=·-0.0</code>·will·return·<code·class="inline">false</code>,·and·matching·<code·class="inline">0.0</code>·against | 161 | returns·<code·class="inline">true</code>.</p><p>In·Erlang/OTP·27,·<code·class="inline">0.0·=:=·-0.0</code>·will·return·<code·class="inline">false</code>,·and·matching·<code·class="inline">0.0</code>·against |
| 162 | <code·class="inline">-0.0</code>·will·fail.·When·used·as·map·keys,·<code·class="inline">0.0</code>·and·<code·class="inline">-0.0</code>·will·be·considered·to | 162 | <code·class="inline">-0.0</code>·will·fail.·When·used·as·map·keys,·<code·class="inline">0.0</code>·and·<code·class="inline">-0.0</code>·will·be·considered·to |
| 163 | be·distinct.</p><p>The·<code·class="inline">==</code>·operator·will·continue·to·return·<code·class="inline">true</code>·for·<code·class="inline">0.0·==·-0.0</code>.</p><p>To·help·to·find·code·that·might·need·to·be·revised,·in·OTP·27·there·will·be·a | 163 | be·distinct.</p><p>The·<code·class="inline">==</code>·operator·will·continue·to·return·<code·class="inline">true</code>·for·<code·class="inline">0.0·==·-0.0</code>.</p><p>To·help·to·find·code·that·might·need·to·be·revised,·in·OTP·27·there·will·be·a |
| 164 | new·compiler·warning·when·matching·against·<code·class="inline">0.0</code>·or·comparing·to·that·value | 164 | new·compiler·warning·when·matching·against·<code·class="inline">0.0</code>·or·comparing·to·that·value |
| 165 | using·the·<code·class="inline">=:=</code>·operator.·The·warning·can·be·suppressed·by·matching·against | 165 | using·the·<code·class="inline">=:=</code>·operator.·The·warning·can·be·suppressed·by·matching·against |
| 166 | <code·class="inline">+0.0</code>·instead·of·<code·class="inline">0.0</code>.</p><p>We·plan·to·introduce·the·same·warning·in·OTP·26.1,·but·by·default·it·will·be | 166 | <code·class="inline">+0.0</code>·instead·of·<code·class="inline">0.0</code>.</p><p>We·plan·to·introduce·the·same·warning·in·OTP·26.1,·but·by·default·it·will·be |
| 167 | disabled.</p><p><a·href=""·id="singleton_typevars"></a></p><h3·id="singleton-type-variables-will-become-a-compile-time-error"·class="section-heading"> | 167 | disabled.</p><p><a·href=""·id="singleton_typevars"></a></p><h3·id="singleton-type-variables-will-become-a-compile-time-error"·class="section-heading"> |
| 168 | ··<a·href="#singleton-type-variables-will-become-a-compile-time-error"·class="hover-link"> | 168 | ··<a·href="#singleton-type-variables-will-become-a-compile-time-error"·class="hover-link"> |
| 169 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 169 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 170 | ··</a> | 170 | ··</a> |
| 171 | ··<span·class="text">Singleton·type·variables·will·become·a·compile-time·error</span> | 171 | ··<span·class="text">Singleton·type·variables·will·become·a·compile-time·error</span> |
| 172 | </h3> | 172 | </h3> |
| 173 | <p>Before·Erlang/OTP·26,·the·compiler·would·silenty·accept·the·following·spec:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">f</span><span·class="p"·data-group-id=" | 173 | <p>Before·Erlang/OTP·26,·the·compiler·would·silenty·accept·the·following·spec:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">f</span><span·class="p"·data-group-id="8677108191-1">(</span><span·class="n">Opts</span><span·class="p"·data-group-id="8677108191-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id="8677108191-2">(</sp[·...·truncated·by·diffoscope;·len:·44,·SHA:·aab5699ee41f35973d791959d49eb45ec92a66e61f788d3d681e8f6e6d4d2f53·...·]-2">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w"> |
| 174 | ····</span><span·class="n">Opts</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 174 | ····</span><span·class="n">Opts</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="8677108191-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Unknown</span><span·class="p"·data-group-id="8677108191-3">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span[·...·truncated·by·diffoscope;·len:·196,·SHA:·521aef677ad2a223e8eca42ea45c614898a014aec8843c5d45f05ba7c33fed21·...·]-4">}</span><span·class="p">.</span><span·class="w"> |
| 175 | </span><span·class="nf">f</span><span·class="p"·data-group-id=" | 175 | </span><span·class="nf">f</span><span·class="p"·data-group-id="8677108191-5">(</span><span·class="p">_</span><span·class="p"·data-group-id="8677108191-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">error</span><span·class="p">.</span></code></pre><p>In·OTP·26,·the·compiler·emits·a·warning·pointing·out·that·the·type·variable |
| 176 | <code·class="inline">Unknown</code>·is·unbound:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">t</span><span·class="p">.</span><span·class="nc">erl</span><span·class="p">:</span><span·class="mi">6</span><span·class="p">:</span><span·class="mi">18</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Warning</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">type</span><span·class="w">·</span><span·class="ss">variable</span><span·class="w">·</span><span·class="ss">'Unknown'</span><span·class="w">·</span><span·class="ss">is</span><span·class="w">·</span><span·class="ss">only</span><span·class="w">·</span><span·class="ss">used</span><span·class="w">·</span><span·class="nf">once</span><span·class="w">·</span><span·class="p"·data-group-id="07 | 176 | <code·class="inline">Unknown</code>·is·unbound:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">t</span><span·class="p">.</span><span·class="nc">erl</span><span·class="p">:</span><span·class="mi">6</span><span·class="p">:</span><span·class="mi">18</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Warning</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">type</span><span·class="w">·</span><span·class="ss">variable</span><span·class="w">·</span><span·class="ss">'Unknown'</span><span·class="w">·</span><span·class="ss">is</span><span·class="w">·</span><span·class="ss">only</span><span·class="w">·</span><span·class="ss">used</span><span·class="w">·</span><span·class="nf">once</span><span·class="w">·</span><span·class="p"·data-group-id="0375634322-1">(</span><span·class="ss">is</span><span·class="w">·</span><span·class="ss">unbound</span><span·class="p"·data-group-id="0375634322-1">)</span><span·class="w"> |
| 177 | </span><span·class="c1">%····6|·····Opts·::·{ok,·Unknown}·|·{error,·Unknown}.</span><span·class="w"> | 177 | </span><span·class="c1">%····6|·····Opts·::·{ok,·Unknown}·|·{error,·Unknown}.</span><span·class="w"> |
| 178 | </span><span·class="c1">%·····|··················^</span></code></pre><p>In·OTP·27,·that·warning·will·become·an·error.</p><p><a·href=""·id="escripts_will_be_compiled"></a></p><h3·id="escripts-will-be-compiled-by-default"·class="section-heading"> | 178 | </span><span·class="c1">%·····|··················^</span></code></pre><p>In·OTP·27,·that·warning·will·become·an·error.</p><p><a·href=""·id="escripts_will_be_compiled"></a></p><h3·id="escripts-will-be-compiled-by-default"·class="section-heading"> |
| 179 | ··<a·href="#escripts-will-be-compiled-by-default"·class="hover-link"> | 179 | ··<a·href="#escripts-will-be-compiled-by-default"·class="hover-link"> |
| 180 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 180 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 181 | ··</a> | 181 | ··</a> |
| 182 | ··<span·class="text">Escripts·will·be·compiled·by·default</span> | 182 | ··<span·class="text">Escripts·will·be·compiled·by·default</span> |
| 183 | </h3> | 183 | </h3> |
| 184 | <p>Escripts·will·be·compiled·by·default·instead·of·interpreted.·That·means·that·the | 184 | <p>Escripts·will·be·compiled·by·default·instead·of·interpreted.·That·means·that·the |
| 185 | <code·class="inline">compiler</code>·application·must·be·available.</p><p>The·old·behavior·of·interpreting·escripts·can·be·restored·by·adding·the | 185 | <code·class="inline">compiler</code>·application·must·be·available.</p><p>The·old·behavior·of·interpreting·escripts·can·be·restored·by·adding·the |
| 186 | following·line·to·the·script·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">mode</span><span·class="p"·data-group-id=" | 186 | following·line·to·the·script·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">mode</span><span·class="p"·data-group-id="1284358926-1">(</span><span·class="ss">interpret</span><span·class="p"·data-group-id="1284358926-1">)</span><span·class="p">.</span></code></pre><p>In·OTP·28,·support·for·interpreting·an·escript·will·be·removed.</p><h3·id="code_path_choice-will-default-to-strict"·class="section-heading"> |
| 187 | ··<a·href="#code_path_choice-will-default-to-strict"·class="hover-link"> | 187 | ··<a·href="#code_path_choice-will-default-to-strict"·class="hover-link"> |
| 188 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 188 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 189 | ··</a> | 189 | ··</a> |
| 190 | ··<span·class="text">-code_path_choice·will·default·to·strict</span> | 190 | ··<span·class="text">-code_path_choice·will·default·to·strict</span> |
| 191 | </h3> | 191 | </h3> |
| 192 | <p>This·command·line·option·controls·if·paths·given·in·the·command·line,·boot | 192 | <p>This·command·line·option·controls·if·paths·given·in·the·command·line,·boot |
| 193 | scripts,·and·the·code·server·should·be·interpreted·as·is·strict·or·relaxed.</p><p>OTP·26·and·earlier·defaults·to·<code·class="inline">relaxed</code>,·which·means·<code·class="inline">-pa·myapp/ebin</code>·would | 193 | scripts,·and·the·code·server·should·be·interpreted·as·is·strict·or·relaxed.</p><p>OTP·26·and·earlier·defaults·to·<code·class="inline">relaxed</code>,·which·means·<code·class="inline">-pa·myapp/ebin</code>·would |
| Offset 231, 18 lines modified | Offset 231, 18 lines modified | ||
| 231 | " | 231 | " |
| 232 | String·Content | 232 | String·Content |
| 233 | " | 233 | " |
| 234 | %% | 234 | %% |
| 235 | %%·In·OTP·27·it·is·instead·interpreted·as·a | 235 | %%·In·OTP·27·it·is·instead·interpreted·as·a |
| 236 | %%·Triple-Quoted·String·equivalent·to | 236 | %%·Triple-Quoted·String·equivalent·to |
| 237 | "String·Content"</code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="s">""</span><span·class="s">""</span><span·class="w"> | 237 | "String·Content"</code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="s">""</span><span·class="s">""</span><span·class="w"> |
| 238 | </span><span·class="o">++</span><span·class="w">·</span><span·class="nf">foo</span><span·class="p"·data-group-id=" | 238 | </span><span·class="o">++</span><span·class="w">·</span><span·class="nf">foo</span><span·class="p"·data-group-id="1102768591-1">(</span><span·class="p"·data-group-id="1102768591-1">)</span><span·class="w">·</span><span·class="o">++</span><span·class="w"> |
| 239 | </span><span·class="s">""</span><span·class="s">""</span><span·class="w"> | 239 | </span><span·class="s">""</span><span·class="s">""</span><span·class="w"> |
| 240 | </span><span·class="c1">%%·Became</span><span·class="w"> | 240 | </span><span·class="c1">%%·Became</span><span·class="w"> |
| 241 | </span><span·class="s">""</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="nf">foo</span><span·class="p"·data-group-id=" | 241 | </span><span·class="s">""</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="nf">foo</span><span·class="p"·data-group-id="1102768591-2">(</span><span·class="p"·data-group-id="1102768591-2">)</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="s">""</span><span·class="w"> |
| 242 | </span><span·class="c1">%%</span><span·class="w"> | 242 | </span><span·class="c1">%%</span><span·class="w"> |
| 243 | </span><span·class="c1">%%·In·OTP·27·it·is·instead·interpreted·as·a</span><span·class="w"> | 243 | </span><span·class="c1">%%·In·OTP·27·it·is·instead·interpreted·as·a</span><span·class="w"> |
| 244 | </span><span·class="c1">%%·Triple-Quoted·String·(triple-or-more)·equivalent·to</span><span·class="w"> | 244 | </span><span·class="c1">%%·Triple-Quoted·String·(triple-or-more)·equivalent·to</span><span·class="w"> |
| 245 | </span><span·class="s">"++·foo()·++"</span></code></pre><p>From·Erlang/OTP·26.1·up·to·27.0·the·compiler·issues·a·warning·for·a·sequence·of | 245 | </span><span·class="s">"++·foo()·++"</span></code></pre><p>From·Erlang/OTP·26.1·up·to·27.0·the·compiler·issues·a·warning·for·a·sequence·of |
| 246 | 3·or·more·double-quote·characters·since·that·is·almost·certainly·a·mistake·or | 246 | 3·or·more·double-quote·characters·since·that·is·almost·certainly·a·mistake·or |
| 247 | something·like·a·result·of·bad·automatic·code·generation.·If·a·users·gets·that | 247 | something·like·a·result·of·bad·automatic·code·generation.·If·a·users·gets·that |
| 248 | warning,·the·code·should·be·corrected·for·example·by·inserting·appropriate | 248 | warning,·the·code·should·be·corrected·for·example·by·inserting·appropriate |
| Offset 237, 50 lines modified | Offset 237, 50 lines modified | ||
| 237 | <code·class="inline">uds_dist</code>·example·using·a·port·driver·written·in·C,·<code·class="inline">erl_uds_dist</code>·is·written | 237 | <code·class="inline">uds_dist</code>·example·using·a·port·driver·written·in·C,·<code·class="inline">erl_uds_dist</code>·is·written |
| 238 | entirely·in·Erlang.</p><h3·id="exported-callback-functions"·class="section-heading"> | 238 | entirely·in·Erlang.</p><h3·id="exported-callback-functions"·class="section-heading"> |
| 239 | ··<a·href="#exported-callback-functions"·class="hover-link"> | 239 | ··<a·href="#exported-callback-functions"·class="hover-link"> |
| 240 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 240 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 241 | ··</a> | 241 | ··</a> |
| 242 | ··<span·class="text">Exported·Callback·Functions</span> | 242 | ··<span·class="text">Exported·Callback·Functions</span> |
| 243 | </h3> | 243 | </h3> |
| 244 | <p>The·following·functions·are·mandatory:</p><ul><li><pre·id="listen"><code·class="makeup·erlang"·translate="no"><span·class="nf">listen</span><span·class="p"·data-group-id=" | 244 | <p>The·following·functions·are·mandatory:</p><ul><li><pre·id="listen"><code·class="makeup·erlang"·translate="no"><span·class="nf">listen</span><span·class="p"·data-group-id="9817916230-1">(</span><span·class="n">Name</span><span·class="p"·data-group-id="9817916230-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 245 | </span><span·class="err"> </span><span·class="err"> </span><span·class="p"·data-group-id=" | 245 | </span><span·class="err"> </span><span·class="err"> </span><span·class="p"·data-group-id="9817916230-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9817916230-3">{</span><span·class="n">Listen</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Address</span>[·...·truncated·by·diffoscope;·len:·456,·SHA:·d887052944bbf2d49a3e7c2f15b55fb650c9c7d9b66d6a59cb16d841dbb76f04·...·]-4">}</span><span·class="w"> |
| 246 | </span><span·class="nf">listen</span><span·class="p"·data-group-id=" | 246 | </span><span·class="nf">listen</span><span·class="p"·data-group-id="9817916230-5">(</span><span·class="n">Name</span><span·class="p">,</span><span·class="n">Host</span><span·class="p"·data-group-id="9817916230-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 247 | </span><span·class="err"> </span><span·class="err"> </span><span·class="p"·data-group-id=" | 247 | </span><span·class="err"> </span><span·class="err"> </span><span·class="p"·data-group-id="9817916230-6">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9817916230-7">{</span><span·class="n">Listen</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Address</span>[·...·truncated·by·diffoscope;·len:·456,·SHA:·b7f0126e3705bb8d8ecdf5ce128c6c0d80b96f05cc714d780ee9eff4980e574e·...·]-8">}</span></code></pre><p><code·class="inline">listen/2</code>·is·called·once·in·order·to·listen·for·incoming·connection·requests. |
| 248 | The·call·is·made·when·the·distribution·is·brought·up.·The·argument·<code·class="inline">Name</code>·is | 248 | The·call·is·made·when·the·distribution·is·brought·up.·The·argument·<code·class="inline">Name</code>·is |
| 249 | the·part·of·the·node·name·before·the·<code·class="inline">@</code>·sign·in·the·full·node·name.·It·can·be | 249 | the·part·of·the·node·name·before·the·<code·class="inline">@</code>·sign·in·the·full·node·name.·It·can·be |
| 250 | either·an·atom·or·a·string.·The·argument·<code·class="inline">Host</code>·is·the·part·of·the·node·name | 250 | either·an·atom·or·a·string.·The·argument·<code·class="inline">Host</code>·is·the·part·of·the·node·name |
| 251 | after·the·<code·class="inline">@</code>·sign·in·the·full·node·name.·It·is·always·a·string.</p><p>The·return·value·consists·of·a·<code·class="inline">Listen</code>·handle·(which·is·later·passed·to·the | 251 | after·the·<code·class="inline">@</code>·sign·in·the·full·node·name.·It·is·always·a·string.</p><p>The·return·value·consists·of·a·<code·class="inline">Listen</code>·handle·(which·is·later·passed·to·the |
| 252 | <a·href="alt_dist.html#accept"><code·class="inline">accept/1</code></a>·callback),·<code·class="inline">Address</code>·which·is·a | 252 | <a·href="alt_dist.html#accept"><code·class="inline">accept/1</code></a>·callback),·<code·class="inline">Address</code>·which·is·a |
| 253 | <code·class="inline">#net_address{}</code>·record·with·information·about·the·address·for·the·node·(the | 253 | <code·class="inline">#net_address{}</code>·record·with·information·about·the·address·for·the·node·(the |
| 254 | <code·class="inline">#net_address{}</code>·record·is·defined·in·<code·class="inline">kernel/include/net_address.hrl</code>),·and | 254 | <code·class="inline">#net_address{}</code>·record·is·defined·in·<code·class="inline">kernel/include/net_address.hrl</code>),·and |
| 255 | <code·class="inline">Creation</code>·which·(currently)·is·an·integer·<code·class="inline">1</code>,·<code·class="inline">2</code>,·or·<code·class="inline">3</code>.</p><p>If·<a·href="epmd_cmd.html"><code·class="inline">epmd</code></a>·is·to·be·used·for·node·discovery,·you·typically·want | 255 | <code·class="inline">Creation</code>·which·(currently)·is·an·integer·<code·class="inline">1</code>,·<code·class="inline">2</code>,·or·<code·class="inline">3</code>.</p><p>If·<a·href="epmd_cmd.html"><code·class="inline">epmd</code></a>·is·to·be·used·for·node·discovery,·you·typically·want |
| 256 | to·use·the·<code·class="inline">erl_epmd</code>·module·(part·of·the·<code·class="inline">kernel</code>·application)·in·order·to | 256 | to·use·the·<code·class="inline">erl_epmd</code>·module·(part·of·the·<code·class="inline">kernel</code>·application)·in·order·to |
| 257 | register·the·listen·port·with·<code·class="inline">epmd</code>·and·retrieve·<code·class="inline">Creation</code>·to·use.</p></li><li><pre·id="address"><code·class="makeup·erlang"·translate="no"><span·class="nf">address</span><span·class="p"·data-group-id=" | 257 | register·the·listen·port·with·<code·class="inline">epmd</code>·and·retrieve·<code·class="inline">Creation</code>·to·use.</p></li><li><pre·id="address"><code·class="makeup·erlang"·translate="no"><span·class="nf">address</span><span·class="p"·data-group-id="5137342705-1">(</span><span·class="p"·data-group-id="5137342705-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 258 | </span><span·class="err"> </span><span·class="err"> </span><span·class="n">Address</span></code></pre><p><code·class="inline">address/0</code>·is·called·in·order·to·get·the·<code·class="inline">Address</code>·part·of·the | 258 | </span><span·class="err"> </span><span·class="err"> </span><span·class="n">Address</span></code></pre><p><code·class="inline">address/0</code>·is·called·in·order·to·get·the·<code·class="inline">Address</code>·part·of·the |
| 259 | <a·href="alt_dist.html#listen"><code·class="inline">listen/2</code></a>·function·without·creating·a·listen·socket. | 259 | <a·href="alt_dist.html#listen"><code·class="inline">listen/2</code></a>·function·without·creating·a·listen·socket. |
| 260 | All·fields·except·<code·class="inline">address</code>·have·to·be·set·in·the·returned·record</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">address</span><span·class="p"·data-group-id=" | 260 | All·fields·except·<code·class="inline">address</code>·have·to·be·set·in·the·returned·record</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">address</span><span·class="p"·data-group-id="7947804062-1">(</span><span·class="p"·data-group-id="7947804062-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 261 | ····</span><span·class="p"·data-group-id=" | 261 | ····</span><span·class="p"·data-group-id="7947804062-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Host</span><span·class="p"·data-group-id="7947804062-2">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·cl[·...·truncated·by·diffoscope;·len:·173,·SHA:·36e818f022c4e194e3d22e062f0b687a7b0786eebd4575beadc12cdbae620908·...·]-3">)</span><span·class="p">,</span><span·class="w"> |
| 262 | ····</span><span·class="o">#</span><span·class="ss">net_address</span><span·class="p"·data-group-id=" | 262 | ····</span><span·class="o">#</span><span·class="ss">net_address</span><span·class="p"·data-group-id="7947804062-4">{</span><span·class="w">·</span><span·class="ss">host</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Host</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">protocol</span><sp[·...·truncated·by·diffoscope;·len:·611,·SHA:·b667f9624a3e1c30cd3b1ab5d7614c0812dd428245ba5ebf21c2eeafa6f69a71·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 263 | </span><span·class="err"> </span><span·class="err"> </span><span·class="n">AcceptorPid</span></code></pre><p><code·class="inline">accept/1</code>·should·spawn·a·process·that·accepts·connections.·This·process | 263 | </span><span·class="err"> </span><span·class="err"> </span><span·class="n">AcceptorPid</span></code></pre><p><code·class="inline">accept/1</code>·should·spawn·a·process·that·accepts·connections.·This·process |
| 264 | should·preferably·execute·on·<code·class="inline">max</code>·priority.·The·process·identifier·of·this | 264 | should·preferably·execute·on·<code·class="inline">max</code>·priority.·The·process·identifier·of·this |
| 265 | process·should·be·returned.</p><p>The·<code·class="inline">Listen</code>·argument·will·be·the·same·as·the·<code·class="inline">Listen</code>·handle·part·of·the | 265 | process·should·be·returned.</p><p>The·<code·class="inline">Listen</code>·argument·will·be·the·same·as·the·<code·class="inline">Listen</code>·handle·part·of·the |
| 266 | return·value·of·the·<a·href="alt_dist.html#listen"><code·class="inline">listen/1</code></a>·callback·above. | 266 | return·value·of·the·<a·href="alt_dist.html#listen"><code·class="inline">listen/1</code></a>·callback·above. |
| 267 | <code·class="inline">accept/1</code>·is·called·only·once·when·the·distribution·protocol·is·started.</p><p>The·caller·of·this·function·is·a·representative·for·<code·class="inline">net_kernel</code>·(this·may·or | 267 | <code·class="inline">accept/1</code>·is·called·only·once·when·the·distribution·protocol·is·started.</p><p>The·caller·of·this·function·is·a·representative·for·<code·class="inline">net_kernel</code>·(this·may·or |
| 268 | may·not·be·the·process·registered·as·<code·class="inline">net_kernel</code>)·and·is·in·this·document | 268 | may·not·be·the·process·registered·as·<code·class="inline">net_kernel</code>)·and·is·in·this·document |
| 269 | identified·as·<code·class="inline">Kernel</code>.·When·a·connection·has·been·accepted·by·the·acceptor | 269 | identified·as·<code·class="inline">Kernel</code>.·When·a·connection·has·been·accepted·by·the·acceptor |
| 270 | process,·it·needs·to·inform·<code·class="inline">Kernel</code>·about·the·accepted·connection.·This·is | 270 | process,·it·needs·to·inform·<code·class="inline">Kernel</code>·about·the·accepted·connection.·This·is |
| 271 | done·by·passing·a·message·on·the·form:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Kernel</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="9 | 271 | done·by·passing·a·message·on·the·form:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Kernel</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="9441103368-1">{</span><span·class="ss">accept</span><span·class="p">,</span><span·class="w">·</span><span·class="n">AcceptorPid</span><span·class="p">,</span><span·class="w">·</span><span·class="n">DistController</span><span·class="p">,</span><span·class="w[·...·truncated·by·diffoscope;·len:·156,·SHA:·8f2efa4b3ca9081f0dec7ddfbc9c3c6e28fe3894c66b1e0b69b483aa81b215c8·...·]-1">}</span></code></pre><p><code·class="inline">DistController</code>·is·either·the·process·or·port·identifier·of·the·distribution |
| 272 | controller·for·the·connection.·The·distribution·controller·should·be·created | 272 | controller·for·the·connection.·The·distribution·controller·should·be·created |
| 273 | by·the·acceptor·processes·when·a·new·connection·is·accepted.·Its·job·is·to | 273 | by·the·acceptor·processes·when·a·new·connection·is·accepted.·Its·job·is·to |
| 274 | dispatch·traffic·on·the·connection.</p><p><code·class="inline">Kernel</code>·responds·with·one·of·the·following·messages:</p><ul><li><p><strong><code·class="inline">{Kernel,·controller,·SupervisorPid}</code></strong>·-·The·request·was·accepted·and | 274 | dispatch·traffic·on·the·connection.</p><p><code·class="inline">Kernel</code>·responds·with·one·of·the·following·messages:</p><ul><li><p><strong><code·class="inline">{Kernel,·controller,·SupervisorPid}</code></strong>·-·The·request·was·accepted·and |
| 275 | <code·class="inline">SupervisorPid</code>·is·the·process·identifier·of·the·connection·supervisor | 275 | <code·class="inline">SupervisorPid</code>·is·the·process·identifier·of·the·connection·supervisor |
| 276 | process·(which·is·created·in·the | 276 | process·(which·is·created·in·the |
| 277 | <a·href="alt_dist.html#accept_connection"><code·class="inline">accept_connection/5</code></a>·callback).</p></li><li><p><strong><code·class="inline">{Kernel,·unsupported_protocol}</code></strong>·-·The·request·was·rejected.·This·is·a | 277 | <a·href="alt_dist.html#accept_connection"><code·class="inline">accept_connection/5</code></a>·callback).</p></li><li><p><strong><code·class="inline">{Kernel,·unsupported_protocol}</code></strong>·-·The·request·was·rejected.·This·is·a |
| 278 | fatal·error.·The·acceptor·process·should·terminate.</p></li></ul><p>When·an·accept·sequence·has·been·completed·the·acceptor·process·is·expected·to | 278 | fatal·error.·The·acceptor·process·should·terminate.</p></li></ul><p>When·an·accept·sequence·has·been·completed·the·acceptor·process·is·expected·to |
| 279 | continue·accepting·further·requests.</p></li><li><pre·id="accept_connection"><code·class="makeup·erlang"·translate="no"><span·class="nf">accept_connection</span><span·class="p"·data-group-id=" | 279 | continue·accepting·further·requests.</p></li><li><pre·id="accept_connection"><code·class="makeup·erlang"·translate="no"><span·class="nf">accept_connection</span><span·class="p"·data-group-id="9655333864-1">(</span><span·class="n">AcceptorPid</span><span·class="p">,</span><span·class="w">·</span><span·class="n">DistCtrl</span><span·class="p">,</span><span·class="w">·</span><span·class="n">MyNode</span><span·class="p">,</span><span·class="w">·</s[·...·truncated·by·diffoscope;·len:·155,·SHA:·718cbf09bdc80c7de2eed80fc0a98eb6e22d73e0b6a68288d24f413ab3663401·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 280 | </span><span·class="err"> </span><span·class="err"> </span><span·class="n">ConnectionSupervisorPid</span></code></pre><p><code·class="inline">accept_connection/5</code>·should·spawn·a·process·that·will·perform·the·Erlang | 280 | </span><span·class="err"> </span><span·class="err"> </span><span·class="n">ConnectionSupervisorPid</span></code></pre><p><code·class="inline">accept_connection/5</code>·should·spawn·a·process·that·will·perform·the·Erlang |
| 281 | distribution·handshake·for·the·connection.·If·the·handshake·successfully | 281 | distribution·handshake·for·the·connection.·If·the·handshake·successfully |
| 282 | completes·it·should·continue·to·function·as·a·connection·supervisor.·This | 282 | completes·it·should·continue·to·function·as·a·connection·supervisor.·This |
| 283 | process·should·preferably·execute·on·<code·class="inline">max</code>·priority·and·should·be·linked·to | 283 | process·should·preferably·execute·on·<code·class="inline">max</code>·priority·and·should·be·linked·to |
| 284 | the·caller.·The·<code·class="inline">dist_util:net_ticker_spawn_options()</code>·function·can·be·called | 284 | the·caller.·The·<code·class="inline">dist_util:net_ticker_spawn_options()</code>·function·can·be·called |
| 285 | to·get·spawn·options·suitable·for·this·process·which·can·be·passed·directly·to | 285 | to·get·spawn·options·suitable·for·this·process·which·can·be·passed·directly·to |
| 286 | <a·href="erlang.html#spawn_opt/4"><code·class="inline">erlang:spawn_opt/4</code></a>.·<code·class="inline">dist_util:net_ticker_spawn_options()</code>·will·by·default | 286 | <a·href="erlang.html#spawn_opt/4"><code·class="inline">erlang:spawn_opt/4</code></a>.·<code·class="inline">dist_util:net_ticker_spawn_options()</code>·will·by·default |
| Offset 294, 15 lines modified | Offset 294, 15 lines modified | ||
| 294 | <code·class="inline">dist_util:handshake_other_started(HsData)</code>.</p></li><li><p><strong><code·class="inline">Allowed</code></strong>·-·To·be·passed·along·to | 294 | <code·class="inline">dist_util:handshake_other_started(HsData)</code>.</p></li><li><p><strong><code·class="inline">Allowed</code></strong>·-·To·be·passed·along·to |
| 295 | <code·class="inline">dist_util:handshake_other_started(HsData)</code>.</p></li><li><p><strong><code·class="inline">SetupTime</code></strong>·-·Time·used·for·creating·a·setup·timer·by·a·call·to | 295 | <code·class="inline">dist_util:handshake_other_started(HsData)</code>.</p></li><li><p><strong><code·class="inline">SetupTime</code></strong>·-·Time·used·for·creating·a·setup·timer·by·a·call·to |
| 296 | <code·class="inline">dist_util:start_timer(SetupTime)</code>.·The·timer·should·be·passed·along·to | 296 | <code·class="inline">dist_util:start_timer(SetupTime)</code>.·The·timer·should·be·passed·along·to |
| 297 | <code·class="inline">dist_util:handshake_other_started(HsData)</code>.</p></li></ul><p>The·created·process·should·provide·callbacks·and·other·information·needed·for | 297 | <code·class="inline">dist_util:handshake_other_started(HsData)</code>.</p></li></ul><p>The·created·process·should·provide·callbacks·and·other·information·needed·for |
| 298 | the·handshake·in·a·<a·href="alt_dist.html#hs_data_record"><code·class="inline">#hs_data{}</code></a>·record·and·call | 298 | the·handshake·in·a·<a·href="alt_dist.html#hs_data_record"><code·class="inline">#hs_data{}</code></a>·record·and·call |
| 299 | <code·class="inline">dist_util:handshake_other_started(HsData)</code>·with·this·record.</p><p><code·class="inline">dist_util:handshake_other_started(HsData)</code>·will·perform·the·handshake·and·if | 299 | <code·class="inline">dist_util:handshake_other_started(HsData)</code>·with·this·record.</p><p><code·class="inline">dist_util:handshake_other_started(HsData)</code>·will·perform·the·handshake·and·if |
| 300 | the·handshake·successfully·completes·this·process·will·then·continue·in·a | 300 | the·handshake·successfully·completes·this·process·will·then·continue·in·a |
| 301 | connection·supervisor·loop·as·long·as·the·connection·is·up.</p></li><li><pre·id="setup"><code·class="makeup·erlang"·translate="no"><span·class="nf">setup</span><span·class="p"·data-group-id=" | 301 | connection·supervisor·loop·as·long·as·the·connection·is·up.</p></li><li><pre·id="setup"><code·class="makeup·erlang"·translate="no"><span·class="nf">setup</span><span·class="p"·data-group-id="3294028013-1">(</span><span·class="n">Node</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Type</span><span·class="p">,</span><span·class="w">·</span><span·class="n">MyNode</span><span·class="p">,</span><span·class="w">·</span><span·c[·...·truncated·by·diffoscope;·len:·153,·SHA:·086794bac48ef728004145ea6980a69cd79eeb2766bdfcbf40642bda8a07e127·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 302 | </span><span·class="err"> </span><span·class="err"> </span><span·class="n">ConnectionSupervisorPid</span></code></pre><p><code·class="inline">setup/5</code>·should·spawn·a·process·that·connects·to·<code·class="inline">Node</code>.·When·connection·has | 302 | </span><span·class="err"> </span><span·class="err"> </span><span·class="n">ConnectionSupervisorPid</span></code></pre><p><code·class="inline">setup/5</code>·should·spawn·a·process·that·connects·to·<code·class="inline">Node</code>.·When·connection·has |
| 303 | been·established·it·should·perform·the·Erlang·distribution·handshake·for·the | 303 | been·established·it·should·perform·the·Erlang·distribution·handshake·for·the |
| 304 | connection.·If·the·handshake·successfully·completes·it·should·continue·to | 304 | connection.·If·the·handshake·successfully·completes·it·should·continue·to |
| 305 | function·as·a·connection·supervisor.·This·process·should·preferably·execute·on | 305 | function·as·a·connection·supervisor.·This·process·should·preferably·execute·on |
| 306 | <code·class="inline">max</code>·priority·and·should·be·linked·to·the·caller.·The | 306 | <code·class="inline">max</code>·priority·and·should·be·linked·to·the·caller.·The |
| 307 | <code·class="inline">dist_util:net_ticker_spawn_options()</code>·function·can·be·called·to·get·spawn | 307 | <code·class="inline">dist_util:net_ticker_spawn_options()</code>·function·can·be·called·to·get·spawn |
| 308 | options·suitable·for·this·process·which·can·be·passed·directly·to | 308 | options·suitable·for·this·process·which·can·be·passed·directly·to |
| Offset 320, 23 lines modified | Offset 320, 23 lines modified | ||
| 320 | may·not·be·the·process·registered·as·<code·class="inline">net_kernel</code>)·and·is·in·this·document | 320 | may·not·be·the·process·registered·as·<code·class="inline">net_kernel</code>)·and·is·in·this·document |
| 321 | identified·as·<code·class="inline">Kernel</code>.</p><p>This·function·should,·besides·spawning·the·connection·supervisor,·also·create | 321 | identified·as·<code·class="inline">Kernel</code>.</p><p>This·function·should,·besides·spawning·the·connection·supervisor,·also·create |
| 322 | a·distribution·controller.·The·distribution·controller·is·either·a·process·or | 322 | a·distribution·controller.·The·distribution·controller·is·either·a·process·or |
| 323 | a·port·which·is·responsible·for·dispatching·traffic.</p><p>The·created·process·should·provide·callbacks·and·other·information·needed·for | 323 | a·port·which·is·responsible·for·dispatching·traffic.</p><p>The·created·process·should·provide·callbacks·and·other·information·needed·for |
| 324 | the·handshake·in·a·<a·href="alt_dist.html#hs_data_record"><code·class="inline">#hs_data{}</code></a>·record·and·call | 324 | the·handshake·in·a·<a·href="alt_dist.html#hs_data_record"><code·class="inline">#hs_data{}</code></a>·record·and·call |
| 325 | <code·class="inline">dist_util:handshake_we_started(HsData)</code>·with·this·record.</p><p><code·class="inline">dist_util:handshake_we_started(HsData)</code>·will·perform·the·handshake·and·the | 325 | <code·class="inline">dist_util:handshake_we_started(HsData)</code>·with·this·record.</p><p><code·class="inline">dist_util:handshake_we_started(HsData)</code>·will·perform·the·handshake·and·the |
| 326 | handshake·successfully·completes·this·process·will·then·continue·in·a | 326 | handshake·successfully·completes·this·process·will·then·continue·in·a |
| 327 | connection·supervisor·loop·as·long·as·the·connection·is·up.</p></li><li><pre·id="close"><code·class="makeup·erlang"·translate="no"><span·class="nf">close</span><span·class="p"·data-group-id=" | 327 | connection·supervisor·loop·as·long·as·the·connection·is·up.</p></li><li><pre·id="close"><code·class="makeup·erlang"·translate="no"><span·class="nf">close</span><span·class="p"·data-group-id="1470005689-1">(</span><span·class="n">Listen</span><span·class="p"·data-group-id="1470005689-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 328 | </span><span·class="err"> </span><span·class="err"> </span><span·class="nf">void</span><span·class="p"·data-group-id=" | 328 | </span><span·class="err"> </span><span·class="err"> </span><span·class="nf">void</span><span·class="p"·data-group-id="1470005689-2">(</span><span·class="p"·data-group-id="1470005689-2">)</span></code></pre><p>Called·in·order·to·close·the·<code·class="inline">Listen</code>·handle·that·originally·was·passed·from |
| 329 | the·<a·href="alt_dist.html#listen"><code·class="inline">listen/1</code></a>·callback.</p></li><li><pre·id="select"><code·class="makeup·erlang"·translate="no"><span·class="nf">select</span><span·class="p"·data-group-id=" | 329 | the·<a·href="alt_dist.html#listen"><code·class="inline">listen/1</code></a>·callback.</p></li><li><pre·id="select"><code·class="makeup·erlang"·translate="no"><span·class="nf">select</span><span·class="p"·data-group-id="3685517778-1">(</span><span·class="n">NodeName</span><span·class="p"·data-group-id="3685517778-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 330 | </span><span·class="err"> </span><span·class="err"> </span><span·class="nf">boolean</span><span·class="p"·data-group-id=" | 330 | </span><span·class="err"> </span><span·class="err"> </span><span·class="nf">boolean</span><span·class="p"·data-group-id="3685517778-2">(</span><span·class="p"·data-group-id="3685517778-2">)</span></code></pre><p>Return·<code·class="inline">true</code>·if·the·host·name·part·of·the·<code·class="inline">NodeName</code>·is·valid·for·use·with |
| 331 | this·protocol;·otherwise,·<code·class="inline">false</code>.</p></li></ul><p>There·are·also·two·optional·functions·that·may·be·exported:</p><ul><li><pre·id="setopts"><code·class="makeup·erlang"·translate="no"><span·class="nf">setopts</span><span·class="p"·data-group-id="6955974497-1">(</span><span·class="n">Listen</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opts</span><span·class="p"·data-group-id="6955974497-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | ||
| 332 | 331 | this·protocol;·otherwise,·<code·class="inline">false</code>.</p></li></ul><p>There·are·also·two·optional·functions·that·may·be·exported:</p><ul><li><pre·id="setopts"><code·class="makeup·erlang"·translate="no"><span·class="nf">setopts</span><span·class="p"·[·...·truncated·by·diffoscope;·len:·262,·SHA:·23b177301da21d8a928d9688579822a8da8fe6c02fa8989bdb8091bcef2b2a69·...·] | |
| 332 | </span><span·class="err"> </span><span·class="err"> </span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="8566510784-2">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Error</span><span·class="p"·data-group-id="8566510784-2">}</span></code></pre><p>The·argument·<code·class="inline">Listen</code>·is·the·handle·originally·passed·from·the | ||
| 333 | <a·href="alt_dist.html#listen"><code·class="inline">listen/1</code></a>·callback.·The·argument·<code·class="inline">Opts</code>·is·a·list·of | 333 | <a·href="alt_dist.html#listen"><code·class="inline">listen/1</code></a>·callback.·The·argument·<code·class="inline">Opts</code>·is·a·list·of |
| 334 | options·to·set·on·future·connections.</p></li><li><pre·id="getopts"><code·class="makeup·erlang"·translate="no"><span·class="nf">getopts</span><span·class="p"·data-group-id=" | 334 | options·to·set·on·future·connections.</p></li><li><pre·id="getopts"><code·class="makeup·erlang"·translate="no"><span·class="nf">getopts</span><span·class="p"·data-group-id="7823720885-1">(</span><span·class="n">Listen</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opts</span><span·class="p"·data-group-id="7823720885-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 335 | </span><span·class="err"> </span><span·class="err"> </span><span·class="p"·data-group-id=" | 335 | </span><span·class="err"> </span><span·class="err"> </span><span·class="p"·data-group-id="7823720885-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">OptionValues</span><span·class="p"·data-group-id="7823720885-2">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span>[·...·truncated·by·diffoscope;·len:·199,·SHA:·e2f2ab102c6e09ab847555f83e063cd6f663e3b4b652cc3d6217aba1a7d2da10·...·]-3">}</span></code></pre><p>The·argument·<code·class="inline">Listen</code>·is·the·handle·originally·passed·from·the |
| 336 | <a·href="alt_dist.html#listen"><code·class="inline">listen/1</code></a>·callback.·The·argument·<code·class="inline">Opts</code>·is·a·list·of | 336 | <a·href="alt_dist.html#listen"><code·class="inline">listen/1</code></a>·callback.·The·argument·<code·class="inline">Opts</code>·is·a·list·of |
| 337 | options·to·read·for·future·connections.</p></li></ul><p><a·href=""·id="hs_data_record"></a></p><h3·id="the-hs_data-record"·class="section-heading"> | 337 | options·to·read·for·future·connections.</p></li></ul><p><a·href=""·id="hs_data_record"></a></p><h3·id="the-hs_data-record"·class="section-heading"> |
| 338 | ··<a·href="#the-hs_data-record"·class="hover-link"> | 338 | ··<a·href="#the-hs_data-record"·class="hover-link"> |
| 339 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 339 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 340 | ··</a> | 340 | ··</a> |
| 341 | ··<span·class="text">The·#hs_data{}·Record</span> | 341 | ··<span·class="text">The·#hs_data{}·Record</span> |
| 342 | </h3> | 342 | </h3> |
| Offset 350, 44 lines modified | Offset 350, 44 lines modified | ||
| 350 | <a·href="alt_dist.html#accept_connection"><code·class="inline">accept_connection/5</code></a>.</p></li><li><p><strong><code·class="inline"·id="hs_data_other_node">other_node</code></strong>·-·Name·of·the·other·node.·This·field | 350 | <a·href="alt_dist.html#accept_connection"><code·class="inline">accept_connection/5</code></a>.</p></li><li><p><strong><code·class="inline"·id="hs_data_other_node">other_node</code></strong>·-·Name·of·the·other·node.·This·field |
| 351 | is·only·mandatory·when·this·node·initiates·the·connection.·That·is,·when | 351 | is·only·mandatory·when·this·node·initiates·the·connection.·That·is,·when |
| 352 | connection·is·set·up·via·<a·href="alt_dist.html#setup"><code·class="inline">setup/5</code></a>.</p></li><li><p><strong><code·class="inline"·id="hs_data_this_node">this_node</code></strong>·-·The·node·name·of·this·node.</p></li><li><p><strong><code·class="inline"·id="hs_data_socket">socket</code></strong>·-·The·identifier·of·the·distribution | 352 | connection·is·set·up·via·<a·href="alt_dist.html#setup"><code·class="inline">setup/5</code></a>.</p></li><li><p><strong><code·class="inline"·id="hs_data_this_node">this_node</code></strong>·-·The·node·name·of·this·node.</p></li><li><p><strong><code·class="inline"·id="hs_data_socket">socket</code></strong>·-·The·identifier·of·the·distribution |
| 353 | controller.</p></li><li><p><strong><code·class="inline"·id="hs_data_timer">timer</code></strong>·-·The·timer·created·using | 353 | controller.</p></li><li><p><strong><code·class="inline"·id="hs_data_timer">timer</code></strong>·-·The·timer·created·using |
| 354 | <code·class="inline">dist_util:start_timer/1</code>.</p></li><li><p><strong><code·class="inline"·id="hs_data_allowed">allowed</code></strong>·-·Information·passed·as·<code·class="inline">Allowed</code>·to | 354 | <code·class="inline">dist_util:start_timer/1</code>.</p></li><li><p><strong><code·class="inline"·id="hs_data_allowed">allowed</code></strong>·-·Information·passed·as·<code·class="inline">Allowed</code>·to |
| 355 | <code·class="inline">accept_connection/5</code>.·This·field·is·only·mandatory·when·the·remote·node | 355 | <code·class="inline">accept_connection/5</code>.·This·field·is·only·mandatory·when·the·remote·node |
| 356 | initiated·the·connection.·That·is,·when·the·connection·is·set·up·via | 356 | initiated·the·connection.·That·is,·when·the·connection·is·set·up·via |
| 357 | <a·href="alt_dist.html#accept_connection"><code·class="inline">accept_connection/5</code></a>.</p></li><li><p><strong><code·class="inline"·id="hs_data_f_send">f_send</code></strong>·-·A·fun·with·the·following·signature:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="3388383024-1">(</span><span·class="n">DistCtrlr</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="3388383024-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="3388383024-2">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Error</span><span·class="p"·data-group-id="3388383024-2">}</span></code></pre><p>where·<code·class="inline">DistCtrlr</code>·is·the·identifier·of·the·distribution·controller·and·<code·class="inline">Data</code> | ||
| 358 | 357 | <a·href="alt_dist.html#accept_connection"><code·class="inline">accept_connection/5</code></a>.</p></li><li><p><strong><code·class="inline"·id="hs_data_f_send">f_send</code></strong>·-·A·fun·with·the·following·signature:</p><pre><code·class="makeup·erlang"·[·...·truncated·by·diffoscope;·len:·809,·SHA:·0b5a99ea5a08cda888d392043a830336a219bd84a84f86ad7664f6712019fe39·...·] | |
| 358 | is·io·data·to·pass·to·the·other·side.</p><p>Only·used·during·handshake·phase.</p></li><li><p><strong><code·class="inline"·id="hs_data_f_recv">f_recv</code></strong>·-·A·fun·with·the·following·signature:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="3523134116-1">(</span><span·class="n">DistCtrlr</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Length</span><span·class="p"·data-group-id="3523134116-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="3523134116-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Packet</span><span·class="p"·data-group-id="3523134116-2">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="3523134116-3">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="p"·data-group-id="3523134116-3">}</span></code></pre><p>where·<code·class="inline">DistCtrlr</code>·is·the·identifier·of·the·distribution·controller.·If | ||
| 359 | <code·class="inline">Length</code>·is·<code·class="inline">0</code>,·all·available·bytes·should·be·returned.·If·<code·class="inline">Length·>·0</code>, | 359 | <code·class="inline">Length</code>·is·<code·class="inline">0</code>,·all·available·bytes·should·be·returned.·If·<code·class="inline">Length·>·0</code>, |
| 360 | exactly·<code·class="inline">Length</code>·bytes·should·be·returned,·or·an·error;·possibly·discarding | 360 | exactly·<code·class="inline">Length</code>·bytes·should·be·returned,·or·an·error;·possibly·discarding |
| 361 | less·than·<code·class="inline">Length</code>·bytes·of·data·when·the·connection·is·closed·from·the·other | 361 | less·than·<code·class="inline">Length</code>·bytes·of·data·when·the·connection·is·closed·from·the·other |
| 362 | side.·It·is·used·for·passive·receive·of·data·from·the·other·end.</p><p>Only·used·during·handshake·phase.</p></li><li><p><strong><code·class="inline"·id="hs_data_f_setopts_pre_nodeup">f_setopts_pre_nodeup</code></strong>·-·A·fun·with·the | 362 | side.·It·is·used·for·passive·receive·of·data·from·the·other·end.</p><p>Only·used·during·handshake·phase.</p></li><li><p><strong><code·class="inline"·id="hs_data_f_setopts_pre_nodeup">f_setopts_pre_nodeup</code></strong>·-·A·fun·with·the |
| 363 | following·signature:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id=" | 363 | following·signature:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="6894103537-1">(</span><span·class="n">DistCtrlr</span><span·class="p"·data-group-id="6894103537-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">|</span[·...·truncated·by·diffoscope;·len:·224,·SHA:·36f8bc63ac99e09edb3834dbf4e4c4caea8e1e10f41dd1407841fcb07becb231·...·]-2">}</span></code></pre><p>where·<code·class="inline">DistCtrlr</code>·is·the·identifier·of·the·distribution·controller.·Called |
| 364 | just·before·the·distribution·channel·is·taken·up·for·normal·traffic.</p><p>Only·used·during·handshake·phase.</p></li><li><p><strong><code·class="inline"·id="hs_data_f_setopts_post_nodeup">f_setopts_post_nodeup</code></strong>·-·A·fun·with | 364 | just·before·the·distribution·channel·is·taken·up·for·normal·traffic.</p><p>Only·used·during·handshake·phase.</p></li><li><p><strong><code·class="inline"·id="hs_data_f_setopts_post_nodeup">f_setopts_post_nodeup</code></strong>·-·A·fun·with |
| 365 | the·following·signature:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id=" | 365 | the·following·signature:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="9055078227-1">(</span><span·class="n">DistCtrlr</span><span·class="p"·data-group-id="9055078227-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">|</span[·...·truncated·by·diffoscope;·len:·224,·SHA:·a5401cad282eba3f21ab245e11cb00a55c07fb3ed2fbe5d6a337b5014501cf99·...·]-2">}</span></code></pre><p>where·<code·class="inline">DistCtrlr</code>·is·the·identifier·of·the·distribution·controller.·Called |
| 366 | just·after·distribution·channel·has·been·taken·up·for·normal·traffic.</p><p>Only·used·during·handshake·phase.</p></li><li><p><strong><code·class="inline"·id="hs_data_f_getll">f_getll</code></strong>·-·A·fun·with·the·following·signature:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="9 | 366 | just·after·distribution·channel·has·been·taken·up·for·normal·traffic.</p><p>Only·used·during·handshake·phase.</p></li><li><p><strong><code·class="inline"·id="hs_data_f_getll">f_getll</code></strong>·-·A·fun·with·the·following·signature:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="9962480531-1">(</span><span·class="n">DistCtrlr</span><span·class="p"·data-group-id="9962480531-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">ID</span></code></pre><p>where·<code·class="inline">DistCtrlr</code>·is·the·identifier·of·the·distribution·controller·and·<code·class="inline">ID</code>·is |
| 367 | the·identifier·of·the·low·level·entity·that·handles·the·connection·(often | 367 | the·identifier·of·the·low·level·entity·that·handles·the·connection·(often |
| 368 | <code·class="inline">DistCtrlr</code>·itself).</p><p>Only·used·during·handshake·phase.</p></li><li><p><strong><code·class="inline"·id="hs_data_f_address">f_address</code></strong>·-·A·fun·with·the·following·signature:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id=" | 368 | <code·class="inline">DistCtrlr</code>·itself).</p><p>Only·used·during·handshake·phase.</p></li><li><p><strong><code·class="inline"·id="hs_data_f_address">f_address</code></strong>·-·A·fun·with·the·following·signature:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="2463859482-1">(</span><span·class="n">DistCtrlr</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Node</span><span·class="p"·data-group-id="2463859482-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">NetAddress</span></code></pre><p>where·<code·class="inline">DistCtrlr</code>·is·the·identifier·of·the·distribution·controller,·<code·class="inline">Node</code>·is |
| 369 | the·node·name·of·the·node·on·the·other·end,·and·<code·class="inline">NetAddress</code>·is·a | 369 | the·node·name·of·the·node·on·the·other·end,·and·<code·class="inline">NetAddress</code>·is·a |
| 370 | <code·class="inline">#net_address{}</code>·record·with·information·about·the·address·for·the·<code·class="inline">Node</code>·on | 370 | <code·class="inline">#net_address{}</code>·record·with·information·about·the·address·for·the·<code·class="inline">Node</code>·on |
| 371 | the·other·end·of·the·connection.·The·<code·class="inline">#net_address{}</code>·record·is·defined·in | 371 | the·other·end·of·the·connection.·The·<code·class="inline">#net_address{}</code>·record·is·defined·in |
| 372 | <code·class="inline">kernel/include/net_address.hrl</code>.</p><p>Only·used·during·handshake·phase.</p></li><li><p><strong><code·class="inline"·id="hs_data_mf_tick">mf_tick</code></strong>·-·A·fun·with·the·following·signature:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id=" | 372 | <code·class="inline">kernel/include/net_address.hrl</code>.</p><p>Only·used·during·handshake·phase.</p></li><li><p><strong><code·class="inline"·id="hs_data_mf_tick">mf_tick</code></strong>·-·A·fun·with·the·following·signature:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="7307667601-1">(</span><span·class="n">DistCtrlr</span><span·class="p"·data-group-id="7307667601-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">void</span><span·class="p"·data-group-id="7307667601-2">[·...·truncated·by·diffoscope;·len:·49,·SHA:·d8afd80420e724099fa39372461d66acd37f3b1084a54ac8307a149c5a2a4f6a·...·]-2">)</span></code></pre><p>where·<code·class="inline">DistCtrlr</code>·is·the·identifier·of·the·distribution·controller.·This |
| 373 | function·should·send·information·over·the·connection·that·is·not·interpreted | 373 | function·should·send·information·over·the·connection·that·is·not·interpreted |
| 374 | by·the·other·end·while·increasing·the·statistics·of·received·packets·on·the | 374 | by·the·other·end·while·increasing·the·statistics·of·received·packets·on·the |
| 375 | other·end.·This·is·usually·implemented·by·sending·an·empty·packet.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>It·is·of·vital·importance·that·this·operation·does·not·block·the·caller·for | 375 | other·end.·This·is·usually·implemented·by·sending·an·empty·packet.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>It·is·of·vital·importance·that·this·operation·does·not·block·the·caller·for |
| 376 | a·long·time.·This·since·it·is·called·from·the·connection·supervisor.</p></section><p>Used·when·connection·is·up.</p></li><li><p><strong><code·class="inline"·id="hs_data_mf_getstat">mf_getstat</code></strong>·-·A·fun·with·the·following·signature:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id=" | 376 | a·long·time.·This·since·it·is·called·from·the·connection·supervisor.</p></section><p>Used·when·connection·is·up.</p></li><li><p><strong><code·class="inline"·id="hs_data_mf_getstat">mf_getstat</code></strong>·-·A·fun·with·the·following·signature:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="4679915219-1">(</span><span·class="n">DistCtrlr</span><span·class="p"·data-group-id="4679915219-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="4679915219-2">{</span><span·class="ss">ok<[·...·truncated·by·diffoscope;·len:·280,·SHA:·6dd4a418bfb084fed114e3b4c479aef0a567698d912b65b5427a361e595157bd·...·]-2">}</span></code></pre><p>where·<code·class="inline">DistCtrlr</code>·is·the·identifier·of·the·distribution·controller,·<code·class="inline">Received</code> |
| 377 | is·received·packets,·<code·class="inline">Sent</code>·is·sent·packets,·and·<code·class="inline">PendSend</code>·is·amount·of·data | 377 | is·received·packets,·<code·class="inline">Sent</code>·is·sent·packets,·and·<code·class="inline">PendSend</code>·is·amount·of·data |
| 378 | in·queue·to·be·sent·(typically·in·bytes,·but·<code·class="inline">dist_util</code>·only·checks·whether | 378 | in·queue·to·be·sent·(typically·in·bytes,·but·<code·class="inline">dist_util</code>·only·checks·whether |
| 379 | the·value·is·non-zero·to·know·there·is·data·in·queue)·or·a·<a·href="erlang.html#t:boolean/0"><code·class="inline">boolean/0</code></a> | 379 | the·value·is·non-zero·to·know·there·is·data·in·queue)·or·a·<a·href="erlang.html#t:boolean/0"><code·class="inline">boolean/0</code></a> |
| 380 | indicating·whether·there·are·packets·in·queue·to·be·sent.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>It·is·of·vital·importance·that·this·operation·does·not·block·the·caller·for | 380 | indicating·whether·there·are·packets·in·queue·to·be·sent.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>It·is·of·vital·importance·that·this·operation·does·not·block·the·caller·for |
| 381 | a·long·time.·This·since·it·is·called·from·the·connection·supervisor.</p></section><p>Used·when·connection·is·up.</p></li><li><p><strong><code·class="inline"·id="hs_data_request_type">request_type</code></strong>·-·The·request·<code·class="inline">Type</code>·as·passed·to | 381 | a·long·time.·This·since·it·is·called·from·the·connection·supervisor.</p></section><p>Used·when·connection·is·up.</p></li><li><p><strong><code·class="inline"·id="hs_data_request_type">request_type</code></strong>·-·The·request·<code·class="inline">Type</code>·as·passed·to |
| 382 | <a·href="alt_dist.html#setup"><code·class="inline">setup/5</code></a>.·This·is·only·mandatory·when·the·connection·has | 382 | <a·href="alt_dist.html#setup"><code·class="inline">setup/5</code></a>.·This·is·only·mandatory·when·the·connection·has |
| 383 | been·initiated·by·this·node.·That·is,·the·connection·is·set·up·via·<code·class="inline">setup/5</code>.</p></li><li><p><strong><code·class="inline"·id="hs_data_mf_setopts">mf_setopts</code></strong>·-·A·fun·with·the·following·signature:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="6438609771-1">(</span><span·class="n">DistCtrl</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opts</span><span·class="p"·data-group-id="6438609771-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="6438609771-2">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Error</span><span·class="p"·data-group-id="6438609771-2">}</span></code></pre><p>where·<code·class="inline">DistCtrlr</code>·is·the·identifier·of·the·distribution·controller·and·<code·class="inline">Opts</code> | ||
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| 209 | they·have·to·follow·certain·restrictions.·The·convention·for·making | 209 | they·have·to·follow·certain·restrictions.·The·convention·for·making |
| 210 | this·clear·is·to·have·a·comment·above·the·function·that·explains·that | 210 | this·clear·is·to·have·a·comment·above·the·function·that·explains·that |
| 211 | the·function·is·transformed·by·YCF·(see·<code·class="inline">maps_values_1_helper</code>·in | 211 | the·function·is·transformed·by·YCF·(see·<code·class="inline">maps_values_1_helper</code>·in |
| 212 | <code·class="inline">erl_map.c</code>·for·an·example).·If·only·the·transformed·version·of·the | 212 | <code·class="inline">erl_map.c</code>·for·an·example).·If·only·the·transformed·version·of·the |
| 213 | function·is·used,·the·convention·is·to·"comment·out"·the·source·for·the | 213 | function·is·used,·the·convention·is·to·"comment·out"·the·source·for·the |
| 214 | function·by·surrounding·it·with·the·following·<code·class="inline">#ifdef</code>·(this·way,·one | 214 | function·by·surrounding·it·with·the·following·<code·class="inline">#ifdef</code>·(this·way,·one |
| 215 | will·not·get·warnings·about·unused·functions):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">#</span><span·class="ss">ifdef</span><span·class="w">·</span><span·class="n">INCLUDE_YCF_TRANSFORMED_ONLY_FUNCTIONS</span><span·class="w"> | 215 | will·not·get·warnings·about·unused·functions):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">#</span><span·class="ss">ifdef</span><span·class="w">·</span><span·class="n">INCLUDE_YCF_TRANSFORMED_ONLY_FUNCTIONS</span><span·class="w"> |
| 216 | </span><span·class="ss">void</span><span·class="w">·</span><span·class="nf">my_fun</span><span·class="p"·data-group-id=" | 216 | </span><span·class="ss">void</span><span·class="w">·</span><span·class="nf">my_fun</span><span·class="p"·data-group-id="3048560056-1">(</span><span·class="p"·data-group-id="3048560056-1">)</span><span·class="w">·</span><span·class="p"·data-group-id="3048560056-2">{</span><span·class="w"> |
| 217 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 217 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 218 | </span><span·class="p"·data-group-id=" | 218 | </span><span·class="p"·data-group-id="3048560056-2">}</span><span·class="w"> |
| 219 | </span><span·class="p">#</span><span·class="ss">endif</span><span·class="w">·</span><span·class="o">/</span><span·class="o">*</span><span·class="w">·</span><span·class="n">INCLUDE_YCF_TRANSFORMED_ONLY_FUNCTIONS</span><span·class="w">·</span><span·class="o">*</span><span·class="o">/</span></code></pre><p>While·editing·the·function·one·can·define | 219 | </span><span·class="p">#</span><span·class="ss">endif</span><span·class="w">·</span><span·class="o">/</span><span·class="o">*</span><span·class="w">·</span><span·class="n">INCLUDE_YCF_TRANSFORMED_ONLY_FUNCTIONS</span><span·class="w">·</span><span·class="o">*</span><span·class="o">/</span></code></pre><p>While·editing·the·function·one·can·define |
| 220 | <code·class="inline">INCLUDE_YCF_TRANSFORMED_ONLY_FUNCTIONS</code>·so·that·one·can·see·errors | 220 | <code·class="inline">INCLUDE_YCF_TRANSFORMED_ONLY_FUNCTIONS</code>·so·that·one·can·see·errors |
| 221 | and·warnings·in·the·non-transformed·source.</p><h3·id="where-to-place-ycf-transformed-functions"·class="section-heading"> | 221 | and·warnings·in·the·non-transformed·source.</p><h3·id="where-to-place-ycf-transformed-functions"·class="section-heading"> |
| 222 | ··<a·href="#where-to-place-ycf-transformed-functions"·class="hover-link"> | 222 | ··<a·href="#where-to-place-ycf-transformed-functions"·class="hover-link"> |
| 223 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 223 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 224 | ··</a> | 224 | ··</a> |
| 225 | ··<span·class="text">Where·to·Place·YCF·Transformed·Functions</span> | 225 | ··<span·class="text">Where·to·Place·YCF·Transformed·Functions</span> |
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| 151 | The·loader·translates·generic·instructions·to·specific·instructions. | 151 | The·loader·translates·generic·instructions·to·specific·instructions. |
| 152 | In·general,·for·each·generic·instruction,·there·exists·a·family·of | 152 | In·general,·for·each·generic·instruction,·there·exists·a·family·of |
| 153 | specific·instructions.··The·OTP·20·release·has·389·specific | 153 | specific·instructions.··The·OTP·20·release·has·389·specific |
| 154 | instructions.</p></li><li><p>The·implementation·of·specific·instructions·for·the·traditional | 154 | instructions.</p></li><li><p>The·implementation·of·specific·instructions·for·the·traditional |
| 155 | BEAM·interpreter.·For·the·<a·href="beamasm.html">BeamAsm·JIT</a>·introduced | 155 | BEAM·interpreter.·For·the·<a·href="beamasm.html">BeamAsm·JIT</a>·introduced |
| 156 | in·OTP·24,·the·implementation·of·instructions·are·defined·in·emitter | 156 | in·OTP·24,·the·implementation·of·instructions·are·defined·in·emitter |
| 157 | functions·written·in·C++.</p></li></ul><p>Generic·instructions·have·typed·operands.·Here·are·a·few·examples·of | 157 | functions·written·in·C++.</p></li></ul><p>Generic·instructions·have·typed·operands.·Here·are·a·few·examples·of |
| 158 | operands·for·<code·class="inline">move/2</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 158 | operands·for·<code·class="inline">move/2</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="7068765655-1">{</span><span·class="ss">move</span><span·class="p">,</span><span·class="p"·data-group-id="7068765655-2">{</span><span·class="ss">atom</span><span·class="p">,</span><span·class="ss">id</span><span·class="p"·data-group-id="7068765655-2">}</spa[·...·truncated·by·diffoscope;·len:·247,·SHA:·b34fcb0c6bca78364160dcf3eb76bc264889651db6766110567ec44e7eafba5c·...·]-1">}</span><span·class="p">.</span><span·class="w"> |
| 159 | </span><span·class="p"·data-group-id=" | 159 | </span><span·class="p"·data-group-id="7068765655-4">{</span><span·class="ss">move</span><span·class="p">,</span><span·class="p"·data-group-id="7068765655-5">{</span><span·class="ss">x</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="7068765655-5">}</span><s[·...·truncated·by·diffoscope;·len:·243,·SHA:·544d2c48891d7b2270da0d4e2cd664e5eff82235a6a7bfccb5904abeff09d51b·...·]-4">}</span><span·class="p">.</span><span·class="w"> |
| 160 | </span><span·class="p"·data-group-id=" | 160 | </span><span·class="p"·data-group-id="7068765655-7">{</span><span·class="ss">move</span><span·class="p">,</span><span·class="p"·data-group-id="7068765655-8">{</span><span·class="ss">x</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="7068765655-8">}</span><s[·...·truncated·by·diffoscope;·len:·243,·SHA:·2a2b4454ebb93708bc37ae5dead1a751129962fcea0a22883b9a9f3c15366769·...·]-7">}</span><span·class="p">.</span></code></pre><p>When·those·instructions·are·loaded,·the·loader·rewrites·them |
| 161 | to·specific·instructions:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">move_cx</span><span·class="w">·</span><span·class="ss">id</span><span·class="w">·</span><span·class="mi">5</span><span·class="w"> | 161 | to·specific·instructions:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">move_cx</span><span·class="w">·</span><span·class="ss">id</span><span·class="w">·</span><span·class="mi">5</span><span·class="w"> |
| 162 | </span><span·class="ss">move_xx</span><span·class="w">·</span><span·class="mi">3</span><span·class="w">·</span><span·class="mi">0</span><span·class="w"> | 162 | </span><span·class="ss">move_xx</span><span·class="w">·</span><span·class="mi">3</span><span·class="w">·</span><span·class="mi">0</span><span·class="w"> |
| 163 | </span><span·class="ss">move_xy</span><span·class="w">·</span><span·class="mi">2</span><span·class="w">·</span><span·class="mi">1</span></code></pre><p>Corresponding·to·each·generic·instruction,·there·is·a·family·of | 163 | </span><span·class="ss">move_xy</span><span·class="w">·</span><span·class="mi">2</span><span·class="w">·</span><span·class="mi">1</span></code></pre><p>Corresponding·to·each·generic·instruction,·there·is·a·family·of |
| 164 | specific·instructions.··The·types·that·an·instance·of·a·specific | 164 | specific·instructions.··The·types·that·an·instance·of·a·specific |
| 165 | instruction·can·handle·are·encoded·in·the·instruction·names.··For | 165 | instruction·can·handle·are·encoded·in·the·instruction·names.··For |
| 166 | example,·<code·class="inline">move_xy</code>·takes·an·X·register·number·as·the·first·operand·and | 166 | example,·<code·class="inline">move_xy</code>·takes·an·X·register·number·as·the·first·operand·and |
| 167 | a·Y·register·number·as·the·second·operand.··<code·class="inline">move_cx</code>·takes·a·tagged | 167 | a·Y·register·number·as·the·second·operand.··<code·class="inline">move_cx</code>·takes·a·tagged |
| Offset 185, 17 lines modified | Offset 185, 17 lines modified | ||
| 185 | </span><span·class="ss">move</span><span·class="w">·</span><span·class="ss">c</span><span·class="w">·</span><span·class="ss">x</span></code></pre><p>Each·specific·instructions·is·defined·by·following·the·name·of·the | 185 | </span><span·class="ss">move</span><span·class="w">·</span><span·class="ss">c</span><span·class="w">·</span><span·class="ss">x</span></code></pre><p>Each·specific·instructions·is·defined·by·following·the·name·of·the |
| 186 | instruction·with·the·types·for·each·operand.··An·operand·type·is·a | 186 | instruction·with·the·types·for·each·operand.··An·operand·type·is·a |
| 187 | single·letter.··For·example,·<code·class="inline">x</code>·means·an·X·register,·<code·class="inline">y</code> | 187 | single·letter.··For·example,·<code·class="inline">x</code>·means·an·X·register,·<code·class="inline">y</code> |
| 188 | means·a·Y·register,·and·<code·class="inline">c</code>·is·a·"constant"·(a·tagged·term·such·as | 188 | means·a·Y·register,·and·<code·class="inline">c</code>·is·a·"constant"·(a·tagged·term·such·as |
| 189 | an·integer,·an·atom,·or·a·literal).</p><p>Now·let's·look·at·the·implementation·of·the·<code·class="inline">move</code>·instruction.··There | 189 | an·integer,·an·atom,·or·a·literal).</p><p>Now·let's·look·at·the·implementation·of·the·<code·class="inline">move</code>·instruction.··There |
| 190 | are·multiple·files·containing·implementations·of·instructions·in·the | 190 | are·multiple·files·containing·implementations·of·instructions·in·the |
| 191 | <code·class="inline">erts/emulator/beam/emu</code>·directory.··The·<code·class="inline">move</code>·instruction·is·defined | 191 | <code·class="inline">erts/emulator/beam/emu</code>·directory.··The·<code·class="inline">move</code>·instruction·is·defined |
| 192 | in·<code·class="inline">instrs.tab</code>.··It·looks·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">move</span><span·class="p"·data-group-id=" | 192 | in·<code·class="inline">instrs.tab</code>.··It·looks·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">move</span><span·class="p"·data-group-id="3974270656-1">(</span><span·class="n">Src</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Dst</span><span·class="p"·data-group-id="3974270656-1">)</span><span·class="w">·</span><span·class="p"·data-group-id="3974270656-2">{</span><span·class="w"> |
| 193 | ····</span><span·class="sc">$D</span><span·class="ss">st</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="sc">$S</span><span·class="ss">rc</span><span·class="p">;</span><span·class="w"> | 193 | ····</span><span·class="sc">$D</span><span·class="ss">st</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="sc">$S</span><span·class="ss">rc</span><span·class="p">;</span><span·class="w"> |
| 194 | </span><span·class="p"·data-group-id=" | 194 | </span><span·class="p"·data-group-id="3974270656-2">}</span></code></pre><p>The·implementation·for·an·instruction·largely·follows·the·C·syntax, |
| 195 | except·that·the·variables·in·the·function·head·don't·have·any·types. | 195 | except·that·the·variables·in·the·function·head·don't·have·any·types. |
| 196 | The·<code·class="inline">$</code>·before·an·identifier·denotes·a·macro·expansion.··Thus, | 196 | The·<code·class="inline">$</code>·before·an·identifier·denotes·a·macro·expansion.··Thus, |
| 197 | <code·class="inline">$Src</code>·will·expand·to·the·code·to·pick·up·the·source·operand·for | 197 | <code·class="inline">$Src</code>·will·expand·to·the·code·to·pick·up·the·source·operand·for |
| 198 | the·instruction·and·<code·class="inline">$Dst</code>·to·the·code·for·the·destination·register.</p><p>We·will·look·at·the·code·for·each·specific·instruction·in·turn.··To | 198 | the·instruction·and·<code·class="inline">$Dst</code>·to·the·code·for·the·destination·register.</p><p>We·will·look·at·the·code·for·each·specific·instruction·in·turn.··To |
| 199 | make·the·code·easier·to·understand,·let's·first·look·at·the·memory | 199 | make·the·code·easier·to·understand,·let's·first·look·at·the·memory |
| 200 | layout·for·the·instruction·<code·class="inline">{move,{atom,id},{x,5}}</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·····</span><span·class="o">+</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">+</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">+</span><span·class="w"> | 200 | layout·for·the·instruction·<code·class="inline">{move,{atom,id},{x,5}}</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·····</span><span·class="o">+</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">+</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">+</span><span·class="w"> |
| 201 | </span><span·class="n">I</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p">|</span><span·class="w">·················</span><span·class="mi">40</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·······</span><span·class="p">&&</span><span·class="ss">lb_move_cx</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> | 201 | </span><span·class="n">I</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p">|</span><span·class="w">·················</span><span·class="mi">40</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·······</span><span·class="p">&&</span><span·class="ss">lb_move_cx</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| Offset 204, 61 lines modified | Offset 204, 61 lines modified | ||
| 204 | ·····</span><span·class="o">+</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">+</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">+</span></code></pre><p>This·example·and·all·other·examples·in·the·document·assumes·a·64-bit | 204 | ·····</span><span·class="o">+</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">+</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">+</span></code></pre><p>This·example·and·all·other·examples·in·the·document·assumes·a·64-bit |
| 205 | architecture,·and·furthermore·that·pointers·to·C·code·fit·in·32·bits.</p><p><code·class="inline">I</code>·in·the·BEAM·virtual·machine·is·the·instruction·pointer.··When·BEAM | 205 | architecture,·and·furthermore·that·pointers·to·C·code·fit·in·32·bits.</p><p><code·class="inline">I</code>·in·the·BEAM·virtual·machine·is·the·instruction·pointer.··When·BEAM |
| 206 | executes·an·instruction,·<code·class="inline">I</code>·points·to·the·first·word·of·the | 206 | executes·an·instruction,·<code·class="inline">I</code>·points·to·the·first·word·of·the |
| 207 | instruction.</p><p><code·class="inline">&&lb_move_cx</code>·is·the·address·to·C·code·that·implements·<code·class="inline">move_cx</code>.··It | 207 | instruction.</p><p><code·class="inline">&&lb_move_cx</code>·is·the·address·to·C·code·that·implements·<code·class="inline">move_cx</code>.··It |
| 208 | is·stored·in·the·lower·32·bits·of·the·word.··In·the·upper·32·bits·is | 208 | is·stored·in·the·lower·32·bits·of·the·word.··In·the·upper·32·bits·is |
| 209 | the·byte·offset·to·the·X·register;·the·register·number·5·has·been | 209 | the·byte·offset·to·the·X·register;·the·register·number·5·has·been |
| 210 | multiplied·by·the·word·size·size·8.</p><p>In·the·next·word·the·tagged·atom·<code·class="inline">id</code>·is·stored.</p><p>With·that·background,·we·can·look·at·the·generated·code·for·<code·class="inline">move_cx</code> | 210 | multiplied·by·the·word·size·size·8.</p><p>In·the·next·word·the·tagged·atom·<code·class="inline">id</code>·is·stored.</p><p>With·that·background,·we·can·look·at·the·generated·code·for·<code·class="inline">move_cx</code> |
| 211 | in·<code·class="inline">beam_hot.h</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">OpCase</span><span·class="p"·data-group-id=" | 211 | in·<code·class="inline">beam_hot.h</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">OpCase</span><span·class="p"·data-group-id="7202659229-1">(</span><span·class="ss">move_cx</span><span·class="p"·data-group-id="7202659229-1">)</span><span·class="p">:</span><span·class="w"> |
| 212 | </span><span·class="p"·data-group-id=" | 212 | </span><span·class="p"·data-group-id="7202659229-2">{</span><span·class="w"> |
| 213 | ··</span><span·class="n">BeamInstr</span><span·class="w">·</span><span·class="ss">next_pf</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">BeamCodeAddr</span><span·class="p"·data-group-id=" | 213 | ··</span><span·class="n">BeamInstr</span><span·class="w">·</span><span·class="ss">next_pf</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">BeamCodeAddr</span><span·class="p"·data-group-id="7202659229-3">(</span><span·class="n">I</span><span·class="p"·data-group-id="7202659229-4">[</span><span·class="mi">2</span><span·class="p"·data-group-id="7202659229-4">]</span><span·class="p"·data-group-id="7202659229-3">)</span><span·class="p">;</span><span·class="w"> |
| 214 | ··</span><span·class="nf">xb</span><span·class="p"·data-group-id=" | 214 | ··</span><span·class="nf">xb</span><span·class="p"·data-group-id="7202659229-5">(</span><span·class="n">BeamExtraData</span><span·class="p"·data-group-id="7202659229-6">(</span><span·class="n">I</span><span·class="p"·data-group-id="7202659229-7">[</span><span·class="mi">0</span><span·class="p"·data-group-id="7202659229-7[·...·truncated·by·diffoscope;·len:·331,·SHA:·470d1cd41ac2e5ae2176ed231b8944f2c205bb623f17eb189bd7df3ccd0493ac·...·]-8">]</span><span·class="p">;</span><span·class="w"> |
| 215 | ··</span><span·class="n">I</span><span·class="w">·</span><span·class="o">+</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">2</span><span·class="p">;</span><span·class="w"> | 215 | ··</span><span·class="n">I</span><span·class="w">·</span><span·class="o">+</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">2</span><span·class="p">;</span><span·class="w"> |
| 216 | ··</span><span·class="n">ASSERT</span><span·class="p"·data-group-id=" | 216 | ··</span><span·class="n">ASSERT</span><span·class="p"·data-group-id="7202659229-9">(</span><span·class="n">VALID_INSTR</span><span·class="p"·data-group-id="7202659229-10">(</span><span·class="ss">next_pf</span><span·class="p"·data-group-id="7202659229-10">)</span><span·class="p"·data-group-id="7202659229-9">)</span><span·class="p">;</span><span·class="w"> |
| 217 | ··</span><span·class="n">GotoPF</span><span·class="p"·data-group-id=" | 217 | ··</span><span·class="n">GotoPF</span><span·class="p"·data-group-id="7202659229-11">(</span><span·class="ss">next_pf</span><span·class="p"·data-group-id="7202659229-11">)</span><span·class="p">;</span><span·class="w"> |
| 218 | </span><span·class="p"·data-group-id=" | 218 | </span><span·class="p"·data-group-id="7202659229-2">}</span></code></pre><p>We·will·go·through·each·line·in·turn.</p><ul><li><p><code·class="inline">OpCase(move_cx):</code>·defines·a·label·for·the·instruction.··The |
| 219 | <code·class="inline">OpCase()</code>·macro·is·defined·in·<code·class="inline">beam_emu.c</code>.··It·will·expand·this·line | 219 | <code·class="inline">OpCase()</code>·macro·is·defined·in·<code·class="inline">beam_emu.c</code>.··It·will·expand·this·line |
| 220 | to·<code·class="inline">lb_move_cx:</code>.</p></li><li><p><code·class="inline">BeamInstr·next_pf·=·BeamCodeAddr(I[2]);</code>·fetches·the·pointer·to | 220 | to·<code·class="inline">lb_move_cx:</code>.</p></li><li><p><code·class="inline">BeamInstr·next_pf·=·BeamCodeAddr(I[2]);</code>·fetches·the·pointer·to |
| 221 | code·for·the·next·instruction·to·be·executed.··The·<code·class="inline">BeamCodeAddr()</code> | 221 | code·for·the·next·instruction·to·be·executed.··The·<code·class="inline">BeamCodeAddr()</code> |
| 222 | macro·extracts·the·pointer·from·the·lower·32·bits·of·the·instruction | 222 | macro·extracts·the·pointer·from·the·lower·32·bits·of·the·instruction |
| 223 | word.</p></li><li><p><code·class="inline">xb(BeamExtraData(I[0]))·=·I[1];</code>·is·the·expansion·of·<code·class="inline">$Dst·=·$Src</code>. | 223 | word.</p></li><li><p><code·class="inline">xb(BeamExtraData(I[0]))·=·I[1];</code>·is·the·expansion·of·<code·class="inline">$Dst·=·$Src</code>. |
| 224 | <code·class="inline">BeamExtraData()</code>·is·a·macro·that·will·extract·the·upper·32·bits·from | 224 | <code·class="inline">BeamExtraData()</code>·is·a·macro·that·will·extract·the·upper·32·bits·from |
| 225 | the·instruction·word.··In·this·example,·it·will·return·40·which·is·the | 225 | the·instruction·word.··In·this·example,·it·will·return·40·which·is·the |
| 226 | byte·offset·for·X·register·5.··The·<code·class="inline">xb()</code>·macro·will·cast·a·byte | 226 | byte·offset·for·X·register·5.··The·<code·class="inline">xb()</code>·macro·will·cast·a·byte |
| 227 | pointer·to·an·<code·class="inline">Eterm</code>·pointer·and·dereference·it.··The·<code·class="inline">I[1]</code>·on | 227 | pointer·to·an·<code·class="inline">Eterm</code>·pointer·and·dereference·it.··The·<code·class="inline">I[1]</code>·on |
| 228 | the·right-hand·side·of·the·<code·class="inline">=</code>·fetches·an·Erlang·term·(the·atom·<code·class="inline">id</code>·in | 228 | the·right-hand·side·of·the·<code·class="inline">=</code>·fetches·an·Erlang·term·(the·atom·<code·class="inline">id</code>·in |
| 229 | this·case).</p></li><li><p><code·class="inline">I·+=·2</code>·advances·the·instruction·pointer·to·the·next | 229 | this·case).</p></li><li><p><code·class="inline">I·+=·2</code>·advances·the·instruction·pointer·to·the·next |
| 230 | instruction.</p></li><li><p>In·a·debug-compiled·emulator,·<code·class="inline">ASSERT(VALID_INSTR(next_pf));</code>·makes | 230 | instruction.</p></li><li><p>In·a·debug-compiled·emulator,·<code·class="inline">ASSERT(VALID_INSTR(next_pf));</code>·makes |
| 231 | sure·that·<code·class="inline">next_pf</code>·is·a·valid·instruction·(that·is,·that·it·points | 231 | sure·that·<code·class="inline">next_pf</code>·is·a·valid·instruction·(that·is,·that·it·points |
| 232 | within·the·<code·class="inline">process_main()</code>·function·in·<code·class="inline">beam_emu.c</code>).</p></li><li><p><code·class="inline">GotoPF(next_pf);</code>·transfers·control·to·the·next·instruction.</p></li></ul><p>Now·let's·look·at·the·implementation·of·<code·class="inline">move_xx</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">OpCase</span><span·class="p"·data-group-id=" | 232 | within·the·<code·class="inline">process_main()</code>·function·in·<code·class="inline">beam_emu.c</code>).</p></li><li><p><code·class="inline">GotoPF(next_pf);</code>·transfers·control·to·the·next·instruction.</p></li></ul><p>Now·let's·look·at·the·implementation·of·<code·class="inline">move_xx</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">OpCase</span><span·class="p"·data-group-id="8670922796-1">(</span><span·class="ss">move_xx</span><span·class="p"·data-group-id="8670922796-1">)</span><span·class="p">:</span><span·class="w"> |
| 233 | </span><span·class="p"·data-group-id=" | 233 | </span><span·class="p"·data-group-id="8670922796-2">{</span><span·class="w"> |
| 234 | ··</span><span·class="n">Eterm</span><span·class="w">·</span><span·class="ss">tmp_packed1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">BeamExtraData</span><span·class="p"·data-group-id=" | 234 | ··</span><span·class="n">Eterm</span><span·class="w">·</span><span·class="ss">tmp_packed1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">BeamExtraData</span><span·class="p"·data-group-id="8670922796-3">(</span><span·class="n">I</span><span·class="p"·data-group-id="8670922796-4">[</span><span·class="mi">0</span><span·class="p"·data-group-id="8670922796-4">]</span><span·class="p"·data-group-id="8670922796-3">)</span><span·class="p">;</span><span·class="w"> |
| 235 | ··</span><span·class="n">BeamInstr</span><span·class="w">·</span><span·class="ss">next_pf</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">BeamCodeAddr</span><span·class="p"·data-group-id=" | 235 | ··</span><span·class="n">BeamInstr</span><span·class="w">·</span><span·class="ss">next_pf</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">BeamCodeAddr</span><span·class="p"·data-group-id="8670922796-5">(</span><span·class="n">I</span><span·class="p"·data-group-id="8670922796-6">[</span><span·class="mi">1</span><span·class="p"·data-group-id="8670922796-6">]</span><span·class="p"·data-group-id="8670922796-5">)</span><span·class="p">;</span><span·class="w"> |
| 236 | ··</span><span·class="nf">xb</span><span·class="p"·data-group-id=" | 236 | ··</span><span·class="nf">xb</span><span·class="p"·data-group-id="8670922796-7">(</span><span·class="p"·data-group-id="8670922796-8">(</span><span·class="ss">tmp_packed1</span><span·class="p">>></span><span·class="n">BEAM_TIGHT_SHIFT</span><span·class="p"·data-group-id="8670922796-8">)</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·325,·SHA:·cd3bdb14e029c9e11f1f366a7303df4d08e1a02809ec28f46cb7c20c78b2f6dd·...·]-9">)</span><span·class="p">;</span><span·class="w"> |
| 237 | ··</span><span·class="n">I</span><span·class="w">·</span><span·class="o">+</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">;</span><span·class="w"> | 237 | ··</span><span·class="n">I</span><span·class="w">·</span><span·class="o">+</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">;</span><span·class="w"> |
| 238 | ··</span><span·class="n">ASSERT</span><span·class="p"·data-group-id=" | 238 | ··</span><span·class="n">ASSERT</span><span·class="p"·data-group-id="8670922796-10">(</span><span·class="n">VALID_INSTR</span><span·class="p"·data-group-id="8670922796-11">(</span><span·class="ss">next_pf</span><span·class="p"·data-group-id="8670922796-11">)</span><span·class="p"·data-group-id="8670922796-10">)</span><span·class="p">;</span><span·class="w"> |
| 239 | ··</span><span·class="n">GotoPF</span><span·class="p"·data-group-id=" | 239 | ··</span><span·class="n">GotoPF</span><span·class="p"·data-group-id="8670922796-12">(</span><span·class="ss">next_pf</span><span·class="p"·data-group-id="8670922796-12">)</span><span·class="p">;</span><span·class="w"> |
| 240 | </span><span·class="p"·data-group-id=" | 240 | </span><span·class="p"·data-group-id="8670922796-2">}</span></code></pre><p>We·will·go·through·the·lines·that·are·new·or·have·changed·compared·to |
| 241 | <code·class="inline">move_cx</code>.</p><ul><li><p><code·class="inline">Eterm·tmp_packed1·=·BeamExtraData(I[0]);</code>·picks·up·both·X·register | 241 | <code·class="inline">move_cx</code>.</p><ul><li><p><code·class="inline">Eterm·tmp_packed1·=·BeamExtraData(I[0]);</code>·picks·up·both·X·register |
| 242 | numbers·packed·into·the·upper·32·bits·of·the·instruction·word.</p></li><li><p><code·class="inline">BeamInstr·next_pf·=·BeamCodeAddr(I[1]);</code>·pre-fetches·the·address·of | 242 | numbers·packed·into·the·upper·32·bits·of·the·instruction·word.</p></li><li><p><code·class="inline">BeamInstr·next_pf·=·BeamCodeAddr(I[1]);</code>·pre-fetches·the·address·of |
| 243 | the·next·instruction.·Note·that·because·both·X·registers·operands·fits | 243 | the·next·instruction.·Note·that·because·both·X·registers·operands·fits |
| 244 | into·the·instruction·word,·the·next·instruction·is·in·the·very·next | 244 | into·the·instruction·word,·the·next·instruction·is·in·the·very·next |
| 245 | word.</p></li><li><p><code·class="inline">xb((tmp_packed1>>BEAM_TIGHT_SHIFT))·=·xb(tmp_packed1&BEAM_TIGHT_MASK);</code> | 245 | word.</p></li><li><p><code·class="inline">xb((tmp_packed1>>BEAM_TIGHT_SHIFT))·=·xb(tmp_packed1&BEAM_TIGHT_MASK);</code> |
| 246 | copies·the·source·to·the·destination.··(For·a·64-bit·architecture, | 246 | copies·the·source·to·the·destination.··(For·a·64-bit·architecture, |
| 247 | <code·class="inline">BEAM_TIGHT_SHIFT</code>·is·16·and·<code·class="inline">BEAM_TIGHT_MASK</code>·is·<code·class="inline">0xFFFF</code>.)</p></li><li><p><code·class="inline">I·+=·1;</code>·advances·the·instruction·pointer·to·the·next·instruction.</p></li></ul><p><code·class="inline">move_xy</code>·is·almost·identical·to·<code·class="inline">move_xx</code>.··The·only·difference·is | 247 | <code·class="inline">BEAM_TIGHT_SHIFT</code>·is·16·and·<code·class="inline">BEAM_TIGHT_MASK</code>·is·<code·class="inline">0xFFFF</code>.)</p></li><li><p><code·class="inline">I·+=·1;</code>·advances·the·instruction·pointer·to·the·next·instruction.</p></li></ul><p><code·class="inline">move_xy</code>·is·almost·identical·to·<code·class="inline">move_xx</code>.··The·only·difference·is |
| 248 | the·use·of·the·<code·class="inline">yb()</code>·macro·instead·of·<code·class="inline">xb()</code>·to·reference·the | 248 | the·use·of·the·<code·class="inline">yb()</code>·macro·instead·of·<code·class="inline">xb()</code>·to·reference·the |
| 249 | destination·register:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">OpCase</span><span·class="p"·data-group-id=" | 249 | destination·register:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">OpCase</span><span·class="p"·data-group-id="5774278698-1">(</span><span·class="ss">move_xy</span><span·class="p"·data-group-id="5774278698-1">)</span><span·class="p">:</span><span·class="w"> |
| 250 | </span><span·class="p"·data-group-id=" | 250 | </span><span·class="p"·data-group-id="5774278698-2">{</span><span·class="w"> |
| 251 | ··</span><span·class="n">Eterm</span><span·class="w">·</span><span·class="ss">tmp_packed1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">BeamExtraData</span><span·class="p"·data-group-id=" | 251 | ··</span><span·class="n">Eterm</span><span·class="w">·</span><span·class="ss">tmp_packed1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">BeamExtraData</span><span·class="p"·data-group-id="5774278698-3">(</span><span·class="n">I</span><span·class="p"·data-group-id="5774278698-4">[</span><span·class="mi">0</span><span·class="p"·data-group-id="5774278698-4">]</span><span·class="p"·data-group-id="5774278698-3">)</span><span·class="p">;</span><span·class="w"> |
| 252 | ··</span><span·class="n">BeamInstr</span><span·class="w">·</span><span·class="ss">next_pf</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">BeamCodeAddr</span><span·class="p"·data-group-id=" | 252 | ··</span><span·class="n">BeamInstr</span><span·class="w">·</span><span·class="ss">next_pf</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">BeamCodeAddr</span><span·class="p"·data-group-id="5774278698-5">(</span><span·class="n">I</span><span·class="p"·data-group-id="5774278698-6">[</span><span·class="mi">1</span><span·class="p"·data-group-id="5774278698-6">]</span><span·class="p"·data-group-id="5774278698-5">)</span><span·class="p">;</span><span·class="w"> |
| 253 | ··</span><span·class="nf">yb</span><span·class="p"·data-group-id=" | 253 | ··</span><span·class="nf">yb</span><span·class="p"·data-group-id="5774278698-7">(</span><span·class="p"·data-group-id="5774278698-8">(</span><span·class="ss">tmp_packed1</span><span·class="p">>></span><span·class="n">BEAM_TIGHT_SHIFT</span><span·class="p"·data-group-id="5774278698-8">)</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·325,·SHA:·06aaf0318b0d52c0c767ee787b694d5d4701d3285945669d734180536db3f569·...·]-9">)</span><span·class="p">;</span><span·class="w"> |
| 254 | ··</span><span·class="n">I</span><span·class="w">·</span><span·class="o">+</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">;</span><span·class="w"> | 254 | ··</span><span·class="n">I</span><span·class="w">·</span><span·class="o">+</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">;</span><span·class="w"> |
| 255 | ··</span><span·class="n">ASSERT</span><span·class="p"·data-group-id=" | 255 | ··</span><span·class="n">ASSERT</span><span·class="p"·data-group-id="5774278698-10">(</span><span·class="n">VALID_INSTR</span><span·class="p"·data-group-id="5774278698-11">(</span><span·class="ss">next_pf</span><span·class="p"·data-group-id="5774278698-11">)</span><span·class="p"·data-group-id="5774278698-10">)</span><span·class="p">;</span><span·class="w"> |
| 256 | ··</span><span·class="n">GotoPF</span><span·class="p"·data-group-id=" | 256 | ··</span><span·class="n">GotoPF</span><span·class="p"·data-group-id="5774278698-12">(</span><span·class="ss">next_pf</span><span·class="p"·data-group-id="5774278698-12">)</span><span·class="p">;</span><span·class="w"> |
| 257 | </span><span·class="p"·data-group-id=" | 257 | </span><span·class="p"·data-group-id="5774278698-2">}</span></code></pre><h3·id="transformation-rules"·class="section-heading"> |
| 258 | ··<a·href="#transformation-rules"·class="hover-link"> | 258 | ··<a·href="#transformation-rules"·class="hover-link"> |
| 259 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 259 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 260 | ··</a> | 260 | ··</a> |
| 261 | ··<span·class="text">Transformation·rules</span> | 261 | ··<span·class="text">Transformation·rules</span> |
| 262 | </h3> | 262 | </h3> |
| 263 | <p>Next·let's·look·at·how·we·can·do·some·optimizations·using·transformation | 263 | <p>Next·let's·look·at·how·we·can·do·some·optimizations·using·transformation |
| 264 | rules.··For·simple·instructions·such·as·<code·class="inline">move/2</code>,·the·instruction·dispatch | 264 | rules.··For·simple·instructions·such·as·<code·class="inline">move/2</code>,·the·instruction·dispatch |
| Offset 271, 21 lines modified | Offset 271, 21 lines modified | ||
| 271 | with·an·uppercase·letter·just·as·in·Erlang.··A·pattern·variable·may·be | 271 | with·an·uppercase·letter·just·as·in·Erlang.··A·pattern·variable·may·be |
| 272 | followed·<code·class="inline">=</code>·and·one·or·more·type·letters·to·constrain·the·match·to | 272 | followed·<code·class="inline">=</code>·and·one·or·more·type·letters·to·constrain·the·match·to |
| 273 | one·of·those·types.··The·variables·that·are·bound·on·the·left-hand·side·can | 273 | one·of·those·types.··The·variables·that·are·bound·on·the·left-hand·side·can |
| 274 | be·used·on·the·right-hand·side.</p><p>We·will·also·need·to·define·a·specific·instruction·and·an·implementation:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">#</span><span·class="w">·</span><span·class="n">In</span><span·class="w">·</span><span·class="ss">ops</span><span·class="p">.</span><span·class="ss">tab</span><span·class="w"> | 274 | be·used·on·the·right-hand·side.</p><p>We·will·also·need·to·define·a·specific·instruction·and·an·implementation:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">#</span><span·class="w">·</span><span·class="n">In</span><span·class="w">·</span><span·class="ss">ops</span><span·class="p">.</span><span·class="ss">tab</span><span·class="w"> |
| 275 | </span><span·class="ss">move2</span><span·class="w">·</span><span·class="ss">x</span><span·class="w">·</span><span·class="ss">y</span><span·class="w">·</span><span·class="ss">x</span><span·class="w">·</span><span·class="ss">y</span><span·class="w"> | 275 | </span><span·class="ss">move2</span><span·class="w">·</span><span·class="ss">x</span><span·class="w">·</span><span·class="ss">y</span><span·class="w">·</span><span·class="ss">x</span><span·class="w">·</span><span·class="ss">y</span><span·class="w"> |
| 276 | </span><span·class="o">/</span><span·class="o">/</span><span·class="w">·</span><span·class="n">In</span><span·class="w">·</span><span·class="ss">instrs</span><span·class="p">.</span><span·class="ss">tab</span><span·class="w"> | 276 | </span><span·class="o">/</span><span·class="o">/</span><span·class="w">·</span><span·class="n">In</span><span·class="w">·</span><span·class="ss">instrs</span><span·class="p">.</span><span·class="ss">tab</span><span·class="w"> |
| 277 | </span><span·class="nf">move2</span><span·class="p"·data-group-id=" | 277 | </span><span·class="nf">move2</span><span·class="p"·data-group-id="9056648676-1">(</span><span·class="n">S1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">D1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">S2</span><span·class="p">,</span><span·class="w">·</span><span·class="n"[·...·truncated·by·diffoscope;·len:·128,·SHA:·39f68da947070b214bb4f26ebf6dd699961ff54a969fe3273dec860c55e562b6·...·]-2">{</span><span·class="w"> |
| 278 | ····</span><span·class="n">Eterm</span><span·class="w">·</span><span·class="n">V1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">V2</span><span·class="p">;</span><span·class="w"> | 278 | ····</span><span·class="n">Eterm</span><span·class="w">·</span><span·class="n">V1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">V2</span><span·class="p">;</span><span·class="w"> |
| 279 | ····</span><span·class="n">V1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="sc">$S</span><span·class="mi">1</span><span·class="p">;</span><span·class="w"> | 279 | ····</span><span·class="n">V1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="sc">$S</span><span·class="mi">1</span><span·class="p">;</span><span·class="w"> |
| 280 | ····</span><span·class="n">V2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="sc">$S</span><span·class="mi">2</span><span·class="p">;</span><span·class="w"> | 280 | ····</span><span·class="n">V2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="sc">$S</span><span·class="mi">2</span><span·class="p">;</span><span·class="w"> |
| 281 | ····</span><span·class="sc">$D</span><span·class="mi">1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">V1</span><span·class="p">;</span><span·class="w"> | 281 | ····</span><span·class="sc">$D</span><span·class="mi">1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">V1</span><span·class="p">;</span><span·class="w"> |
| 282 | ····</span><span·class="sc">$D</span><span·class="mi">2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">V2</span><span·class="p">;</span><span·class="w"> | 282 | ····</span><span·class="sc">$D</span><span·class="mi">2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">V2</span><span·class="p">;</span><span·class="w"> |
| 283 | </span><span·class="p"·data-group-id=" | 283 | </span><span·class="p"·data-group-id="9056648676-2">}</span></code></pre><p>When·the·loader·has·found·a·match·and·replaced·the·matched·instructions, |
| 284 | it·will·match·the·new·instructions·against·the·transformation·rules. | 284 | it·will·match·the·new·instructions·against·the·transformation·rules. |
| 285 | Because·of·that,·we·can·define·the·rule·for·a·<code·class="inline">move3/6</code>·instruction | 285 | Because·of·that,·we·can·define·the·rule·for·a·<code·class="inline">move3/6</code>·instruction |
| 286 | as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">move2</span><span·class="w">·</span><span·class="n">X1</span><span·class="o">=</span><span·class="ss">x</span><span·class="w">·</span><span·class="n">Y1</span><span·class="o">=</span><span·class="ss">y</span><span·class="w">·</span><span·class="n">X2</span><span·class="o">=</span><span·class="ss">x</span><span·class="w">·</span><span·class="n">Y2</span><span·class="o">=</span><span·class="ss">y</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">move</span><span·class="w">·</span><span·class="n">X3</span><span·class="o">=</span><span·class="ss">x</span><span·class="w">·</span><span·class="n">Y3</span><span·class="o">=</span><span·class="ss">y</span><span·class="w">·</span><span·class="p">=></span><span·class="w"> | 286 | as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">move2</span><span·class="w">·</span><span·class="n">X1</span><span·class="o">=</span><span·class="ss">x</span><span·class="w">·</span><span·class="n">Y1</span><span·class="o">=</span><span·class="ss">y</span><span·class="w">·</span><span·class="n">X2</span><span·class="o">=</span><span·class="ss">x</span><span·class="w">·</span><span·class="n">Y2</span><span·class="o">=</span><span·class="ss">y</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">move</span><span·class="w">·</span><span·class="n">X3</span><span·class="o">=</span><span·class="ss">x</span><span·class="w">·</span><span·class="n">Y3</span><span·class="o">=</span><span·class="ss">y</span><span·class="w">·</span><span·class="p">=></span><span·class="w"> |
| 287 | ······</span><span·class="ss">move3</span><span·class="w">·</span><span·class="n">X1</span><span·class="w">·</span><span·class="n">Y1</span><span·class="w">·</span><span·class="n">X2</span><span·class="w">·</span><span·class="n">Y2</span><span·class="w">·</span><span·class="n">X3</span><span·class="w">·</span><span·class="n">Y3</span></code></pre><p>(For·readability,·a·long·transformation·line·can·be·broken·after·<code·class="inline">|</code> | 287 | ······</span><span·class="ss">move3</span><span·class="w">·</span><span·class="n">X1</span><span·class="w">·</span><span·class="n">Y1</span><span·class="w">·</span><span·class="n">X2</span><span·class="w">·</span><span·class="n">Y2</span><span·class="w">·</span><span·class="n">X3</span><span·class="w">·</span><span·class="n">Y3</span></code></pre><p>(For·readability,·a·long·transformation·line·can·be·broken·after·<code·class="inline">|</code> |
| 288 | and·<code·class="inline">=></code>·operators.)</p><p>It·would·also·be·possible·to·define·it·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">move</span><span·class="w">·</span><span·class="n">X1</span><span·class="o">=</span><span·class="ss">x</span><span·class="w">·</span><span·class="n">Y1</span><span·class="o">=</span><span·class="ss">y</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">move</span><span·class="w">·</span><span·class="n">X2</span><span·class="o">=</span><span·class="ss">x</span><span·class="w">·</span><span·class="n">Y2</span><span·class="o">=</span><span·class="ss">y</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">move</span><span·class="w">·</span><span·class="n">X3</span><span·class="o">=</span><span·class="ss">x</span><span·class="w">·</span><span·class="n">Y3</span><span·class="o">=</span><span·class="ss">y</span><span·class="w">·</span><span·class="p">=></span><span·class="w"> | 288 | and·<code·class="inline">=></code>·operators.)</p><p>It·would·also·be·possible·to·define·it·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">move</span><span·class="w">·</span><span·class="n">X1</span><span·class="o">=</span><span·class="ss">x</span><span·class="w">·</span><span·class="n">Y1</span><span·class="o">=</span><span·class="ss">y</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">move</span><span·class="w">·</span><span·class="n">X2</span><span·class="o">=</span><span·class="ss">x</span><span·class="w">·</span><span·class="n">Y2</span><span·class="o">=</span><span·class="ss">y</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">move</span><span·class="w">·</span><span·class="n">X3</span><span·class="o">=</span><span·class="ss">x</span><span·class="w">·</span><span·class="n">Y3</span><span·class="o">=</span><span·class="ss">y</span><span·class="w">·</span><span·class="p">=></span><span·class="w"> |
| 289 | ·····</span><span·class="ss">move3</span><span·class="w">·</span><span·class="n">X1</span><span·class="w">·</span><span·class="n">Y1</span><span·class="w">·</span><span·class="n">X2</span><span·class="w">·</span><span·class="n">Y2</span><span·class="w">·</span><span·class="n">X3</span><span·class="w">·</span><span·class="n">Y3</span></code></pre><p>but·in·that·case·it·must·be·defined·before·the·rule·for·<code·class="inline">move2/4</code> | 289 | ·····</span><span·class="ss">move3</span><span·class="w">·</span><span·class="n">X1</span><span·class="w">·</span><span·class="n">Y1</span><span·class="w">·</span><span·class="n">X2</span><span·class="w">·</span><span·class="n">Y2</span><span·class="w">·</span><span·class="n">X3</span><span·class="w">·</span><span·class="n">Y3</span></code></pre><p>but·in·that·case·it·must·be·defined·before·the·rule·for·<code·class="inline">move2/4</code> |
| 290 | because·the·first·matching·rule·will·be·applied.</p><p>One·must·be·careful·not·to·create·infinite·loops.··For·example,·if·we | 290 | because·the·first·matching·rule·will·be·applied.</p><p>One·must·be·careful·not·to·create·infinite·loops.··For·example,·if·we |
| Offset 433, 29 lines modified | Offset 433, 29 lines modified | ||
| 433 | </span><span·class="ss">i_bs_get_integer_32</span><span·class="w">·</span><span·class="ss">x</span><span·class="w">·</span><span·class="ss">f</span><span·class="o">?</span><span·class="w">·</span><span·class="ss">x</span><span·class="w"> | 433 | </span><span·class="ss">i_bs_get_integer_32</span><span·class="w">·</span><span·class="ss">x</span><span·class="w">·</span><span·class="ss">f</span><span·class="o">?</span><span·class="w">·</span><span·class="ss">x</span><span·class="w"> |
| 434 | </span><span·class="c1">%endif</span></code></pre><p>The·specific·instruction·<code·class="inline">i_bs_get_integer_32</code>·will·only·be·defined | 434 | </span><span·class="c1">%endif</span></code></pre><p>The·specific·instruction·<code·class="inline">i_bs_get_integer_32</code>·will·only·be·defined |
| 435 | on·a·64-bit·machine.</p><p>The·condition·can·be·inverted·by·using·<code·class="inline">%unless</code>·instead·of·<code·class="inline">%if</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%unless·NO_FPE_SIGNALS</span><span·class="w"> | 435 | on·a·64-bit·machine.</p><p>The·condition·can·be·inverted·by·using·<code·class="inline">%unless</code>·instead·of·<code·class="inline">%if</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%unless·NO_FPE_SIGNALS</span><span·class="w"> |
| 436 | </span><span·class="ss">fcheckerror</span><span·class="w">·</span><span·class="ss">p</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">i_fcheckerror</span><span·class="w"> | 436 | </span><span·class="ss">fcheckerror</span><span·class="w">·</span><span·class="ss">p</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">i_fcheckerror</span><span·class="w"> |
| 437 | </span><span·class="ss">i_fcheckerror</span><span·class="w"> | 437 | </span><span·class="ss">i_fcheckerror</span><span·class="w"> |
| 438 | </span><span·class="ss">fclearerror</span><span·class="w"> | 438 | </span><span·class="ss">fclearerror</span><span·class="w"> |
| 439 | </span><span·class="c1">%endif</span></code></pre><p>It·is·also·possible·to·add·an·<code·class="inline">%else</code>·clause:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%if·ARCH_64</span><span·class="w"> | 439 | </span><span·class="c1">%endif</span></code></pre><p>It·is·also·possible·to·add·an·<code·class="inline">%else</code>·clause:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%if·ARCH_64</span><span·class="w"> |
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| 145 | </h2> | 145 | </h2> |
| 146 | <p>The·code·is·loaded·very·similarly·to·how·it·is·loaded·for·the·interpreter.·Each·beam | 146 | <p>The·code·is·loaded·very·similarly·to·how·it·is·loaded·for·the·interpreter.·Each·beam |
| 147 | file·is·parsed·and·then·optimized·through·the·transformations·described·in | 147 | file·is·parsed·and·then·optimized·through·the·transformations·described·in |
| 148 | <a·href="beam_makeops.html#defining-transformation-rules">beam_makeops</a>.·The·transformations | 148 | <a·href="beam_makeops.html#defining-transformation-rules">beam_makeops</a>.·The·transformations |
| 149 | used·in·BeamAsm·are·much·simpler·than·the·interpreter's,·as·most·of·the | 149 | used·in·BeamAsm·are·much·simpler·than·the·interpreter's,·as·most·of·the |
| 150 | transformations·for·the·interpreter·are·done·only·to·eliminate·the·instruction | 150 | transformations·for·the·interpreter·are·done·only·to·eliminate·the·instruction |
| 151 | dispatch·overhead.</p><p>Then·each·instruction·is·encoded·using·the·C++·functions·in·the | 151 | dispatch·overhead.</p><p>Then·each·instruction·is·encoded·using·the·C++·functions·in·the |
| 152 | <code·class="inline">jit/$ARCH/instr_*.cpp</code>·files.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">void</span><span·class="w">·</span><span·class="n">BeamModuleAssembler</span><span·class="p">:</span><span·class="p">:</span><span·class="nf">emit_is_nonempty_list</span><span·class="p"·data-group-id=" | 152 | <code·class="inline">jit/$ARCH/instr_*.cpp</code>·files.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">void</span><span·class="w">·</span><span·class="n">BeamModuleAssembler</span><span·class="p">:</span><span·class="p">:</span><span·class="nf">emit_is_nonempty_list</span><span·class="p"·data-group-id="1410266247-1">(</span><span·class="ss">const</span><span·class="w">·</span><span·class="n">ArgVal</span><span·class="w">·</span><span·class="err">&</span><span·class="n">Fail</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">const<[·...·truncated·by·diffoscope;·len:·257,·SHA:·b535d9c63e0d2acfc496d5150b9c29183835bdbf1ad8184c60ac6277aa9b5dca·...·]-2">{</span><span·class="w"> |
| 153 | ··</span><span·class="ss">a</span><span·class="p">.</span><span·class="nf">test</span><span·class="p"·data-group-id=" | 153 | ··</span><span·class="ss">a</span><span·class="p">.</span><span·class="nf">test</span><span·class="p"·data-group-id="1410266247-3">(</span><span·class="nf">getArgRef</span><span·class="p"·data-group-id="1410266247-4">(</span><span·class="n">Src</span><span·class="p"·data-group-id="1410266247-4">)</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">imm<[·...·truncated·by·diffoscope;·len:·327,·SHA:·de740e7311406961cf51ac9188f787ba511d8e641bee2e884269caa1d85508d9·...·]-3">)</span><span·class="p">;</span><span·class="w"> |
| 154 | ··</span><span·class="ss">a</span><span·class="p">.</span><span·class="nf">jne</span><span·class="p"·data-group-id=" | 154 | ··</span><span·class="ss">a</span><span·class="p">.</span><span·class="nf">jne</span><span·class="p"·data-group-id="1410266247-6">(</span><span·class="ss">labels</span><span·class="p"·data-group-id="1410266247-7">[</span><span·class="n">Fail</span><span·class="p">.</span><span·class="nf">getLabel</span><span·class="p"·data-group-id="1410266247-8">(</span><span·class="p"[·...·truncated·by·diffoscope;·len:·132,·SHA:·da258e194dacd29821a72d08d8222852a0b7b07d8a23d9ed107f3762f5ee5d87·...·]-6">)</span><span·class="p">;</span><span·class="w"> |
| 155 | </span><span·class="p"·data-group-id=" | 155 | </span><span·class="p"·data-group-id="1410266247-2">}</span></code></pre><p><a·href="https://github.com/asmjit/asmjit">asmjit</a>·provides·a·fairly·straightforward |
| 156 | mapping·from·a·C++·function·call·to·the·x86·assembly·instruction.·The·above | 156 | mapping·from·a·C++·function·call·to·the·x86·assembly·instruction.·The·above |
| 157 | instruction·tests·if·the·value·in·the·<code·class="inline">Src</code>·register·is·a·non-empty·list·and·if | 157 | instruction·tests·if·the·value·in·the·<code·class="inline">Src</code>·register·is·a·non-empty·list·and·if |
| 158 | it·is·not·then·it·jumps·to·the·fail·label.</p><p>For·comparison,·the·interpreter·has·8·combinations·and·specializations·of | 158 | it·is·not·then·it·jumps·to·the·fail·label.</p><p>For·comparison,·the·interpreter·has·8·combinations·and·specializations·of |
| 159 | this·implementation·to·minimize·the·instruction·dispatch·overhead·for | 159 | this·implementation·to·minimize·the·instruction·dispatch·overhead·for |
| 160 | common·patterns.</p><p>The·original·register·allocation·done·by·the·Erlang·compiler·is·used·to·manage·the | 160 | common·patterns.</p><p>The·original·register·allocation·done·by·the·Erlang·compiler·is·used·to·manage·the |
| 161 | liveness·of·values·and·the·physical·registers·are·statically·allocated·to·keep | 161 | liveness·of·values·and·the·physical·registers·are·statically·allocated·to·keep |
| 162 | the·necessary·process·state.·At·the·moment·this·is·the·static·register | 162 | the·necessary·process·state.·At·the·moment·this·is·the·static·register |
| 163 | allocation·on·x86-64:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">rbx</span><span·class="p">:</span><span·class="w">·</span><span·class="n">ErtsSchedulerRegisters</span><span·class="w">·</span><span·class="nf">struct</span><span·class="w">·</span><span·class="p"·data-group-id=" | 163 | allocation·on·x86-64:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">rbx</span><span·class="p">:</span><span·class="w">·</span><span·class="n">ErtsSchedulerRegisters</span><span·class="w">·</span><span·class="nf">struct</span><span·class="w">·</span><span·class="p"·data-group-id="6096113576-1">(</span><span·class="ss">contains</span><span·class="w">·</span><span·class="ss">x</span><span·class="o">/</span><span·class="nb">float</span><span·class="w">·</span><span·class="ss">registers</span><span·class="w">·</span><span·class="ow">an[·...·truncated·by·diffoscope;·len:·156,·SHA:·ab3987a0aa3dac47cc914111f8b8bbc052675dd25ddb42090317c96209dfd136·...·]6-1">)</span><span·class="w"> |
| 164 | </span><span·class="nc">rbp</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Current</span><span·class="w">·</span><span·class="ss">frame</span><span·class="w">·</span><span·class="ss">pointer</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="err">`</span><span·class="ss">perf</span><span·class="err">`</span><span·class="w">·</span><span·class="ss">support</span><span·class="w">·</span><span·class="ss">is</span><span·class="w">·</span><span·class="ss">enabled</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">otherwise</span><span·class="w">·</span><span·class="ss">this</span><span·class="w"> | 164 | </span><span·class="nc">rbp</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Current</span><span·class="w">·</span><span·class="ss">frame</span><span·class="w">·</span><span·class="ss">pointer</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="err">`</span><span·class="ss">perf</span><span·class="err">`</span><span·class="w">·</span><span·class="ss">support</span><span·class="w">·</span><span·class="ss">is</span><span·class="w">·</span><span·class="ss">enabled</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">otherwise</span><span·class="w">·</span><span·class="ss">this</span><span·class="w"> |
| 165 | ·····</span><span·class="ss">is</span><span·class="w">·</span><span·class="ss">an</span><span·class="w">·</span><span·class="ss">optional</span><span·class="w">·</span><span·class="ss">save</span><span·class="w">·</span><span·class="ss">slot</span><span·class="w">·</span><span·class="ss">for</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="n">Erlang</span><span·class="w">·</span><span·class="ss">stack</span><span·class="w">·</span><span·class="ss">pointer</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="ss">executing</span><span·class="w">·</span><span·class="n">C</span><span·class="w"> | 165 | ·····</span><span·class="ss">is</span><span·class="w">·</span><span·class="ss">an</span><span·class="w">·</span><span·class="ss">optional</span><span·class="w">·</span><span·class="ss">save</span><span·class="w">·</span><span·class="ss">slot</span><span·class="w">·</span><span·class="ss">for</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="n">Erlang</span><span·class="w">·</span><span·class="ss">stack</span><span·class="w">·</span><span·class="ss">pointer</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="ss">executing</span><span·class="w">·</span><span·class="n">C</span><span·class="w"> |
| 166 | ·····</span><span·class="ss">code</span><span·class="p">.</span><span·class="w"> | 166 | ·····</span><span·class="ss">code</span><span·class="p">.</span><span·class="w"> |
| 167 | </span><span·class="nc">r12</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Active</span><span·class="w">·</span><span·class="ss">code</span><span·class="w">·</span><span·class="ss">index</span><span·class="w"> | 167 | </span><span·class="nc">r12</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Active</span><span·class="w">·</span><span·class="ss">code</span><span·class="w">·</span><span·class="ss">index</span><span·class="w"> |
| 168 | </span><span·class="nc">r13</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Current</span><span·class="w">·</span><span·class="ss">running</span><span·class="w">·</span><span·class="ss">process</span><span·class="w"> | 168 | </span><span·class="nc">r13</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Current</span><span·class="w">·</span><span·class="ss">running</span><span·class="w">·</span><span·class="ss">process</span><span·class="w"> |
| 169 | </span><span·class="nc">r14</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Remaining</span><span·class="w">·</span><span·class="ss">reductions</span><span·class="w"> | 169 | </span><span·class="nc">r14</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Remaining</span><span·class="w">·</span><span·class="ss">reductions</span><span·class="w"> |
| 170 | </span><span·class="nc">r15</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Erlang</span><span·class="w">·</span><span·class="ss">heap</span><span·class="w">·</span><span·class="ss">pointer</span></code></pre><p>Note·that·all·of·these·are·callee·save·registers·under·the·System·V·and·Windows | 170 | </span><span·class="nc">r15</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Erlang</span><span·class="w">·</span><span·class="ss">heap</span><span·class="w">·</span><span·class="ss">pointer</span></code></pre><p>Note·that·all·of·these·are·callee·save·registers·under·the·System·V·and·Windows |
| Offset 183, 21 lines modified | Offset 183, 21 lines modified | ||
| 183 | shared·and·only·the·arguments·to·the·instructions·vary.·Using·as·little·memory·as | 183 | shared·and·only·the·arguments·to·the·instructions·vary.·Using·as·little·memory·as |
| 184 | possible·has·many·advantages;·less·memory·is·used,·loading·time·decreases, | 184 | possible·has·many·advantages;·less·memory·is·used,·loading·time·decreases, |
| 185 | higher·cache·hit-rate.</p><p>In·BeamAsm·we·need·to·achieve·something·similar·since·the·load-time·of·a·module | 185 | higher·cache·hit-rate.</p><p>In·BeamAsm·we·need·to·achieve·something·similar·since·the·load-time·of·a·module |
| 186 | scales·almost·linearly·with·the·amount·of·memory·it·uses.·Early·BeamAsm·prototypes | 186 | scales·almost·linearly·with·the·amount·of·memory·it·uses.·Early·BeamAsm·prototypes |
| 187 | used·about·double·the·amount·of·memory·for·code·as·the·interpreter,·while·current | 187 | used·about·double·the·amount·of·memory·for·code·as·the·interpreter,·while·current |
| 188 | versions·use·about·10%·more.·How·was·this·achieved?</p><p>In·BeamAsm·we·heavily·use·shared·code·fragments·to·try·to·emit·as·much·code·as | 188 | versions·use·about·10%·more.·How·was·this·achieved?</p><p>In·BeamAsm·we·heavily·use·shared·code·fragments·to·try·to·emit·as·much·code·as |
| 189 | possible·as·global·shared·fragments·instead·of·duplicating·the·code·unnecessarily. | 189 | possible·as·global·shared·fragments·instead·of·duplicating·the·code·unnecessarily. |
| 190 | For·instance,·the·return·instruction·looks·something·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Label</span><span·class="w">·</span><span·class="ss">yield</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">a</span><span·class="p">.</span><span·class="nf">newLabel</span><span·class="p"·data-group-id=" | 190 | For·instance,·the·return·instruction·looks·something·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Label</span><span·class="w">·</span><span·class="ss">yield</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">a</span><span·class="p">.</span><span·class="nf">newLabel</span><span·class="p"·data-group-id="7066523068-1">(</span><span·class="p"·data-group-id="7066523068-1">)</span><span·class="p">;</span><span·class="w"> |
| 191 | </span><span·class="o">/</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Decrement</span><span·class="w">·</span><span·class="ss">reduction</span><span·class="w">·</span><span·class="ss">counter</span><span·class="w">·</span><span·class="o">*</span><span·class="o">/</span><span·class="w"> | 191 | </span><span·class="o">/</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Decrement</span><span·class="w">·</span><span·class="ss">reduction</span><span·class="w">·</span><span·class="ss">counter</span><span·class="w">·</span><span·class="o">*</span><span·class="o">/</span><span·class="w"> |
| 192 | </span><span·class="ss">a</span><span·class="p">.</span><span·class="nf">dec</span><span·class="p"·data-group-id=" | 192 | </span><span·class="ss">a</span><span·class="p">.</span><span·class="nf">dec</span><span·class="p"·data-group-id="7066523068-2">(</span><span·class="n">FCALLS</span><span·class="p"·data-group-id="7066523068-2">)</span><span·class="p">;</span><span·class="w"> |
| 193 | </span><span·class="o">/</span><span·class="o">*</span><span·class="w">·</span><span·class="n">If</span><span·class="w">·</span><span·class="n">FCALLS</span><span·class="w">·</span><span·class="o"><</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">jump</span><span·class="w">·</span><span·class="ss">to</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="ss">yield</span><span·class="o">-</span><span·class="ss">on</span><span·class="o">-</span><span·class="ss">return</span><span·class="w">·</span><span·class="ss">fragment</span><span·class="w">·</span><span·class="o">*</span><span·class="o">/</span><span·class="w"> | 193 | </span><span·class="o">/</span><span·class="o">*</span><span·class="w">·</span><span·class="n">If</span><span·class="w">·</span><span·class="n">FCALLS</span><span·class="w">·</span><span·class="o"><</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">jump</span><span·class="w">·</span><span·class="ss">to</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="ss">yield</span><span·class="o">-</span><span·class="ss">on</span><span·class="o">-</span><span·class="ss">return</span><span·class="w">·</span><span·class="ss">fragment</span><span·class="w">·</span><span·class="o">*</span><span·class="o">/</span><span·class="w"> |
| 194 | </span><span·class="ss">a</span><span·class="p">.</span><span·class="nf">jl</span><span·class="p"·data-group-id=" | 194 | </span><span·class="ss">a</span><span·class="p">.</span><span·class="nf">jl</span><span·class="p"·data-group-id="7066523068-3">(</span><span·class="nf">resolve_fragment</span><span·class="p"·data-group-id="7066523068-4">(</span><span·class="ss">ga</span><span·class="p">-></span><span·class="nf">get_dispatch_return</span><span·class="p"·data-group-id="7066523068-5"[·...·truncated·by·diffoscope;·len:·156,·SHA:·03c7b3a1d40b6bd93a5eaf544db947615d9f5413cc61769a0b41f86981f9996e·...·]-3">)</span><span·class="p">;</span><span·class="w"> |
| 195 | </span><span·class="ss">a</span><span·class="p">.</span><span·class="nf">ret</span><span·class="p"·data-group-id=" | 195 | </span><span·class="ss">a</span><span·class="p">.</span><span·class="nf">ret</span><span·class="p"·data-group-id="7066523068-6">(</span><span·class="p"·data-group-id="7066523068-6">)</span><span·class="p">;</span></code></pre><p>The·code·above·is·not·exactly·what·is·emitted,·but·close·enough.·The·thing·to·note |
| 196 | is·that·the·code·for·doing·the·context·switch·is·never·emitted.·Instead,·we·jump | 196 | is·that·the·code·for·doing·the·context·switch·is·never·emitted.·Instead,·we·jump |
| 197 | to·a·global·fragment·that·all·return·instructions·share.·This·greatly·reduces | 197 | to·a·global·fragment·that·all·return·instructions·share.·This·greatly·reduces |
| 198 | the·amount·of·code·that·has·to·be·emitted·for·each·module.</p><h2·id="running-erlang-code"·class="section-heading"> | 198 | the·amount·of·code·that·has·to·be·emitted·for·each·module.</p><h2·id="running-erlang-code"·class="section-heading"> |
| 199 | ··<a·href="#running-erlang-code"·class="hover-link"> | 199 | ··<a·href="#running-erlang-code"·class="hover-link"> |
| 200 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 200 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 201 | ··</a> | 201 | ··</a> |
| 202 | ··<span·class="text">Running·Erlang·code</span> | 202 | ··<span·class="text">Running·Erlang·code</span> |
| Offset 239, 43 lines modified | Offset 239, 43 lines modified | ||
| 239 | ··<a·href="#running-c-code"·class="hover-link"> | 239 | ··<a·href="#running-c-code"·class="hover-link"> |
| 240 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 240 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 241 | ··</a> | 241 | ··</a> |
| 242 | ··<span·class="text">Running·C·code</span> | 242 | ··<span·class="text">Running·C·code</span> |
| 243 | </h2> | 243 | </h2> |
| 244 | <p>As·Erlang·stacks·can·be·very·small,·we·have·to·switch·over·to·a·different·stack | 244 | <p>As·Erlang·stacks·can·be·very·small,·we·have·to·switch·over·to·a·different·stack |
| 245 | when·we·need·to·execute·C·code·(which·may·expect·a·much·larger·stack).·This·is | 245 | when·we·need·to·execute·C·code·(which·may·expect·a·much·larger·stack).·This·is |
| 246 | done·through·<code·class="inline">emit_enter_runtime</code>·and·<code·class="inline">emit_leave_runtime</code>,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">mov_arg</span><span·class="p"·data-group-id=" | 246 | done·through·<code·class="inline">emit_enter_runtime</code>·and·<code·class="inline">emit_leave_runtime</code>,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">mov_arg</span><span·class="p"·data-group-id="9063884479-1">(</span><span·class="n">ARG4</span><span·class="p">,</span><span·class="w">·</span><span·class="n">NumFree</span><span·class="p"·data-group-id="9063884479-1">)</span><span·class="p">;</span><span·class="w"> |
| 247 | </span><span·class="o">/</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Move</span><span·class="w">·</span><span·class="ss">to</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="n">C</span><span·class="w">·</span><span·class="ss">stack</span><span·class="w">·</span><span·class="ow">and</span><span·class="w">·</span><span·class="ss">swap</span><span·class="w">·</span><span·class="ss">out</span><span·class="w">·</span><span·class="ss">our</span><span·class="w">·</span><span·class="ss">current</span><span·class="w">·</span><span·class="ss">reductions</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">stack</span><span·class="o">-</span><span·class="p">,</span><span·class="w">·</span><span·class="ow">and</span><span·class="w"> | 247 | </span><span·class="o">/</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Move</span><span·class="w">·</span><span·class="ss">to</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="n">C</span><span·class="w">·</span><span·class="ss">stack</span><span·class="w">·</span><span·class="ow">and</span><span·class="w">·</span><span·class="ss">swap</span><span·class="w">·</span><span·class="ss">out</span><span·class="w">·</span><span·class="ss">our</span><span·class="w">·</span><span·class="ss">current</span><span·class="w">·</span><span·class="ss">reductions</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">stack</span><span·class="o">-</span><span·class="p">,</span><span·class="w">·</span><span·class="ow">and</span><span·class="w"> |
| 248 | ·</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">heap</span><span·class="w">·</span><span·class="ss">pointer</span><span·class="w">·</span><span·class="ss">to</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="ss">process</span><span·class="w">·</span><span·class="ss">structure</span><span·class="p">.</span><span·class="w">·</span><span·class="o">*</span><span·class="o">/</span><span·class="w"> | 248 | ·</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">heap</span><span·class="w">·</span><span·class="ss">pointer</span><span·class="w">·</span><span·class="ss">to</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="ss">process</span><span·class="w">·</span><span·class="ss">structure</span><span·class="p">.</span><span·class="w">·</span><span·class="o">*</span><span·class="o">/</span><span·class="w"> |
| 249 | </span><span·class="ss">emit_enter_runtime</span><span·class="o"><</span><span·class="n">Update</span><span·class="p">:</span><span·class="p">:</span><span·class="ss">eReductions</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="n">Update</span><span·class="p">:</span><span·class="p">:</span><span·class="ss">eStack</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="n">Update</span><span·class="p">:</span><span·class="p">:</span><span·class="ss">eHeap</span><span·class="o">></span><span·class="p"·data-group-id=" | 249 | </span><span·class="ss">emit_enter_runtime</span><span·class="o"><</span><span·class="n">Update</span><span·class="p">:</span><span·class="p">:</span><span·class="ss">eReductions</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="n">Update</span><span·class="p">:</span><span·class="p">:</span><span·class="ss">eStack</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="n">Update</span><span·class="p">:</span><span·class="p">:</span><span·class="ss">eHeap</span><span·class="o">></span><span·class="p"·data-group-id="9063884479-2">(</span><span·class="p"·data-group-id="9063884479-2">)</span><span·class="p">;</span><span·class="w"> |
| 250 | </span><span·class="ss">a</span><span·class="p">.</span><span·class="nf">mov</span><span·class="p"·data-group-id=" | 250 | </span><span·class="ss">a</span><span·class="p">.</span><span·class="nf">mov</span><span·class="p"·data-group-id="9063884479-3">(</span><span·class="n">ARG1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">c_p</span><span·class="p"·data-group-id="9063884479-3">)</span><span·class="p">;</span><span·class="w"> |
| 251 | </span><span·class="nf">load_x_reg_array</span><span·class="p"·data-group-id=" | 251 | </span><span·class="nf">load_x_reg_array</span><span·class="p"·data-group-id="9063884479-4">(</span><span·class="n">ARG2</span><span·class="p"·data-group-id="9063884479-4">)</span><span·class="p">;</span><span·class="w"> |
| 252 | </span><span·class="nf">make_move_patch</span><span·class="p"·data-group-id=" | 252 | </span><span·class="nf">make_move_patch</span><span·class="p"·data-group-id="9063884479-5">(</span><span·class="n">ARG3</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">lambdas</span><span·class="p"·data-group-id="9063884479-6">[</span><span·class="n">Fun</span><span·class="p">.</span><span·class="nf">getValue[·...·truncated·by·diffoscope;·len:·262,·SHA:·5d0aa4bb921df1da1ff1419ca6ab8bbf0e435a27701c53c4abb97d479f8e3af5·...·]-5">)</span><span·class="p">;</span><span·class="w"> |
| 253 | </span><span·class="o">/</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Call</span><span·class="w">·</span><span·class="err">`</span><span·class="ss">new_fun</span><span·class="err">`</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">asserting</span><span·class="w">·</span><span·class="ss">that</span><span·class="w">·</span><span·class="ss">we</span><span·class="err">'</span><span·class="ss">re</span><span·class="w">·</span><span·class="ss">on</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="n">C</span><span·class="w">·</span><span·class="ss">stack</span><span·class="p">.</span><span·class="w">·</span><span·class="o">*</span><span·class="o">/</span><span·class="w"> | 253 | </span><span·class="o">/</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Call</span><span·class="w">·</span><span·class="err">`</span><span·class="ss">new_fun</span><span·class="err">`</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">asserting</span><span·class="w">·</span><span·class="ss">that</span><span·class="w">·</span><span·class="ss">we</span><span·class="err">'</span><span·class="ss">re</span><span·class="w">·</span><span·class="ss">on</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="n">C</span><span·class="w">·</span><span·class="ss">stack</span><span·class="p">.</span><span·class="w">·</span><span·class="o">*</span><span·class="o">/</span><span·class="w"> |
| 254 | </span><span·class="ss">runtime_call</span><span·class="o"><</span><span·class="mi">4</span><span·class="o">></span><span·class="p"·data-group-id=" | 254 | </span><span·class="ss">runtime_call</span><span·class="o"><</span><span·class="mi">4</span><span·class="o">></span><span·class="p"·data-group-id="9063884479-8">(</span><span·class="ss">new_fun</span><span·class="p"·data-group-id="9063884479-8">)</span><span·class="p">;</span><span·class="w"> |
| 255 | </span><span·class="o">/</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Move</span><span·class="w">·</span><span·class="ss">back</span><span·class="w">·</span><span·class="ss">to</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="n">C</span><span·class="w">·</span><span·class="ss">stack</span><span·class="p">,</span><span·class="w">·</span><span·class="ow">and</span><span·class="w">·</span><span·class="ss">read</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="ss">updated</span><span·class="w">·</span><span·class="ss">values</span><span·class="w">·</span><span·class="ss">from</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="ss">process</span><span·class="w"> | 255 | </span><span·class="o">/</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Move</span><span·class="w">·</span><span·class="ss">back</span><span·class="w">·</span><span·class="ss">to</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="n">C</span><span·class="w">·</span><span·class="ss">stack</span><span·class="p">,</span><span·class="w">·</span><span·class="ow">and</span><span·class="w">·</span><span·class="ss">read</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="ss">updated</span><span·class="w">·</span><span·class="ss">values</span><span·class="w">·</span><span·class="ss">from</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="ss">process</span><span·class="w"> |
| 256 | ·</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">structure</span><span·class="w">·</span><span·class="o">*</span><span·class="o">/</span><span·class="w"> | 256 | ·</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">structure</span><span·class="w">·</span><span·class="o">*</span><span·class="o">/</span><span·class="w"> |
| 257 | </span><span·class="ss">emit_leave_runtime</span><span·class="o"><</span><span·class="n">Update</span><span·class="p">:</span><span·class="p">:</span><span·class="ss">eReductions</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="n">Update</span><span·class="p">:</span><span·class="p">:</span><span·class="ss">eStack</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="n">Update</span><span·class="p">:</span><span·class="p">:</span><span·class="ss">eHeap</span><span·class="o">></span><span·class="p"·data-group-id=" | 257 | </span><span·class="ss">emit_leave_runtime</span><span·class="o"><</span><span·class="n">Update</span><span·class="p">:</span><span·class="p">:</span><span·class="ss">eReductions</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="n">Update</span><span·class="p">:</span><span·class="p">:</span><span·class="ss">eStack</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="n">Update</span><span·class="p">:</span><span·class="p">:</span><span·class="ss">eHeap</span><span·class="o">></span><span·class="p"·data-group-id="9063884479-9">(</span><span·class="p"·data-group-id="9063884479-9">)</span><span·class="p">;</span><span·class="w"> |
| 258 | </span><span·class="ss">a</span><span·class="p">.</span><span·class="nf">mov</span><span·class="p"·data-group-id=" | 258 | </span><span·class="ss">a</span><span·class="p">.</span><span·class="nf">mov</span><span·class="p"·data-group-id="9063884479-10">(</span><span·class="nf">getXRef</span><span·class="p"·data-group-id="9063884479-11">(</span><span·class="mi">0</span><span·class="p"·data-group-id="9063884479-11">)</span><span·class="p">,</span><span·class="w">·</span><span·class="n">RET</[·...·truncated·by·diffoscope;·len:·46,·SHA:·386bc0adc0610bc3e5aea4ca8384d99696240a853c8d512ba5b0165f507dd4be·...·]-10">)</span><span·class="p">;</span></code></pre><p>All·combinations·of·the·<code·class="inline">Update</code>·constants·are·legal,·but·the·ones·given·to |
| 259 | <code·class="inline">emit_leave_runtime</code>·<em>must</em>·be·the·same·as·those·given·to·<code·class="inline">emit_enter_runtime</code>.</p><h2·id="tracing-and-nif-loading"·class="section-heading"> | 259 | <code·class="inline">emit_leave_runtime</code>·<em>must</em>·be·the·same·as·those·given·to·<code·class="inline">emit_enter_runtime</code>.</p><h2·id="tracing-and-nif-loading"·class="section-heading"> |
| 260 | ··<a·href="#tracing-and-nif-loading"·class="hover-link"> | 260 | ··<a·href="#tracing-and-nif-loading"·class="hover-link"> |
| 261 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 261 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 262 | ··</a> | 262 | ··</a> |
| 263 | ··<span·class="text">Tracing·and·NIF·Loading</span> | 263 | ··<span·class="text">Tracing·and·NIF·Loading</span> |
| 264 | </h2> | 264 | </h2> |
| 265 | <p>To·make·tracing·and·NIF·loading·work·there·needs·to·be·a·way·to·intercept | 265 | <p>To·make·tracing·and·NIF·loading·work·there·needs·to·be·a·way·to·intercept |
| 266 | any·function·call.·In·the·interpreter,·this·is·done·by·rewriting·the·loaded | 266 | any·function·call.·In·the·interpreter,·this·is·done·by·rewriting·the·loaded |
| 267 | BEAM·code,·but·this·is·more·complicated·in·BeamAsm·as·we·want·to·have·a·fast | 267 | BEAM·code,·but·this·is·more·complicated·in·BeamAsm·as·we·want·to·have·a·fast |
| 268 | and·compact·way·to·do·this.·This·is·solved·by·emitting·the·code·below·at·the | 268 | and·compact·way·to·do·this.·This·is·solved·by·emitting·the·code·below·at·the |
| 269 | start·of·each·function·(x86·variant·below):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··</span><span·class="mi">0</span><span·class="nc">x0</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">short</span><span·class="w">·</span><span·class="ss">jmp</span><span·class="w">·</span><span·class="mi">6</span><span·class="w">·</span><span·class="p"·data-group-id=" | 269 | start·of·each·function·(x86·variant·below):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··</span><span·class="mi">0</span><span·class="nc">x0</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">short</span><span·class="w">·</span><span·class="ss">jmp</span><span·class="w">·</span><span·class="mi">6</span><span·class="w">·</span><span·class="p"·data-group-id="6949692563-1">(</span><span·class="ss">address</span><span·class="w">·</span><span·class="mi">0</span><span·class="ss">x8</span><span·class="p"·data-group-id="6949692563-1">)</span><span·class="w"> |
| 270 | ··</span><span·class="mi">0</span><span·class="nc">x2</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">nop</span><span·class="w"> | 270 | ··</span><span·class="mi">0</span><span·class="nc">x2</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">nop</span><span·class="w"> |
| 271 | ··</span><span·class="mi">0</span><span·class="nc">x3</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">relative</span><span·class="w">·</span><span·class="ss">near</span><span·class="w">·</span><span·class="ss">call</span><span·class="w">·</span><span·class="ss">to</span><span·class="w">·</span><span·class="ss">shared</span><span·class="w">·</span><span·class="ss">breakpoint</span><span·class="w">·</span><span·class="ss">fragment</span><span·class="w"> | 271 | ··</span><span·class="mi">0</span><span·class="nc">x3</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">relative</span><span·class="w">·</span><span·class="ss">near</span><span·class="w">·</span><span·class="ss">call</span><span·class="w">·</span><span·class="ss">to</span><span·class="w">·</span><span·class="ss">shared</span><span·class="w">·</span><span·class="ss">breakpoint</span><span·class="w">·</span><span·class="ss">fragment</span><span·class="w"> |
| 272 | ··</span><span·class="mi">0</span><span·class="nc">x8</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">actual</span><span·class="w">·</span><span·class="ss">code</span><span·class="w">·</span><span·class="ss">for</span><span·class="w">·</span><span·class="ss">function</span></code></pre><p>When·code·starts·to·execute·it·will·simply·see·the·<code·class="inline">short·jmp·6</code>·instruction | 272 | ··</span><span·class="mi">0</span><span·class="nc">x8</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">actual</span><span·class="w">·</span><span·class="ss">code</span><span·class="w">·</span><span·class="ss">for</span><span·class="w">·</span><span·class="ss">function</span></code></pre><p>When·code·starts·to·execute·it·will·simply·see·the·<code·class="inline">short·jmp·6</code>·instruction |
| 273 | which·skips·the·prologue·and·starts·to·execute·the·code·directly.</p><p>When·we·want·to·enable·a·certain·breakpoint·we·set·the·jmp·target·to·be·1, | 273 | which·skips·the·prologue·and·starts·to·execute·the·code·directly.</p><p>When·we·want·to·enable·a·certain·breakpoint·we·set·the·jmp·target·to·be·1, |
| 274 | which·means·it·will·land·on·the·call·to·the·shared·breakpoint·fragment.·This | 274 | which·means·it·will·land·on·the·call·to·the·shared·breakpoint·fragment.·This |
| 275 | fragment·checks·the·current·<code·class="inline">breakpoint_flag</code>·stored·in·the·ErtsCodeInfo·of | 275 | fragment·checks·the·current·<code·class="inline">breakpoint_flag</code>·stored·in·the·ErtsCodeInfo·of |
| 276 | this·function,·and·then·calls·<code·class="inline">erts_call_nif_early</code>·and | 276 | this·function,·and·then·calls·<code·class="inline">erts_call_nif_early</code>·and |
| Offset 289, 31 lines modified | Offset 289, 31 lines modified | ||
| 289 | ··<span·class="text">Updating·code</span> | 289 | ··<span·class="text">Updating·code</span> |
| 290 | </h3> | 290 | </h3> |
| 291 | <p>Because·many·environments·enforce·<a·href="https://en.wikipedia.org/wiki/W%5EX"·title="">W^X</a>·it's·not·always·possible·to·write | 291 | <p>Because·many·environments·enforce·<a·href="https://en.wikipedia.org/wiki/W%5EX"·title="">W^X</a>·it's·not·always·possible·to·write |
| 292 | directly·to·the·code·pages.·Because·of·this·we·map·code·twice:·once·with·an | 292 | directly·to·the·code·pages.·Because·of·this·we·map·code·twice:·once·with·an |
| 293 | executable·page·and·once·with·a·writable·page.·Since·they're·backed·by·the | 293 | executable·page·and·once·with·a·writable·page.·Since·they're·backed·by·the |
| 294 | same·memory,·writes·to·the·writable·page·appear·magically·in·the·executable | 294 | same·memory,·writes·to·the·writable·page·appear·magically·in·the·executable |
| 295 | one.</p><p>The·<code·class="inline">erts_writable_code_ptr</code>·function·can·be·used·to·get·writable·pointers | 295 | one.</p><p>The·<code·class="inline">erts_writable_code_ptr</code>·function·can·be·used·to·get·writable·pointers |
| 296 | given·a·module·instance,·provided·that·it·has·been·unsealed·first:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">for</span><span·class="w">·</span><span·class="p"·data-group-id=" | 296 | given·a·module·instance,·provided·that·it·has·been·unsealed·first:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">for</span><span·class="w">·</span><span·class="p"·data-group-id="2244260628-1">(</span><span·class="ss">i</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">;</span><span·class="w">·</span><span·class="ss">i</span><span·class="w">·</span><span·class="o"[·...·truncated·by·diffoscope;·len:·277,·SHA:·d1c08f9539917519a4948f58e11d26f0d132404c8ba7f335ca757faf7e10e738·...·]-2">{</span><span·class="w"> |
| 297 | ····</span><span·class="ss">const</span><span·class="w">·</span><span·class="n">ErtsCodeInfo</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">ci_exec</span><span·class="p">;</span><span·class="w"> | 297 | ····</span><span·class="ss">const</span><span·class="w">·</span><span·class="n">ErtsCodeInfo</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">ci_exec</span><span·class="p">;</span><span·class="w"> |
| 298 | ····</span><span·class="n">ErtsCodeInfo</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">ci_rw</span><span·class="p">;</span><span·class="w"> | 298 | ····</span><span·class="n">ErtsCodeInfo</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">ci_rw</span><span·class="p">;</span><span·class="w"> |
| 299 | ····</span><span·class="ss">void</span><span·class="w">·</span><span·class="o">*</span><span·class="ss">w_ptr</span><span·class="p">;</span><span·class="w"> | 299 | ····</span><span·class="ss">void</span><span·class="w">·</span><span·class="o">*</span><span·class="ss">w_ptr</span><span·class="p">;</span><span·class="w"> |
| 300 | ····</span><span·class="nf">erts_unseal_module</span><span·class="p"·data-group-id=" | 300 | ····</span><span·class="nf">erts_unseal_module</span><span·class="p"·data-group-id="2244260628-3">(</span><span·class="err">&</span><span·class="ss">modp</span><span·class="p">-></span><span·class="ss">curr</span><span·class="p"·data-group-id="2244260628-3">)</span><span·class="p">;</span><span·class="w"> |
| 301 | ····</span><span·class="ss">ci_exec</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">code_hdr</span><span·class="p">-></span><span·class="ss">functions</span><span·class="p"·data-group-id=" | 301 | ····</span><span·class="ss">ci_exec</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">code_hdr</span><span·class="p">-></span><span·class="ss">functions</span><span·class="p"·data-group-id="2244260628-4">[</span><span·class="ss">i</span><span·class="p"·data-group-id="2244260628-4">]</span><span·class="p">;</span><span·class="w"> |
| 302 | ····</span><span·class="ss">w_ptr</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">erts_writable_code_ptr</span><span·class="p"·data-group-id=" | 302 | ····</span><span·class="ss">w_ptr</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">erts_writable_code_ptr</span><span·class="p"·data-group-id="2244260628-5">(</span><span·class="err">&</span><span·class="ss">modp</span><span·class="p">-></span><span·class="ss">curr</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ci_exec</span><span·class="p"·data-group-id="2244260628-5">)</span><span·class="p">;</span><span·class="w"> |
| 303 | ····</span><span·class="ss">ci_rw</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 303 | ····</span><span·class="ss">ci_rw</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2244260628-6">(</span><span·class="n">ErtsCodeInfo</span><span·class="o">*</span><span·class="p"·data-group-id="2244260628-6">)</span><span·class="ss">w_ptr</span><span·class="p">;</span><span·class="w"> |
| 304 | ····</span><span·class="nf">uninstall_breakpoint</span><span·class="p"·data-group-id=" | 304 | ····</span><span·class="nf">uninstall_breakpoint</span><span·class="p"·data-group-id="2244260628-7">(</span><span·class="ss">ci_rw</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ci_exec</span><span·class="p"·data-group-id="2244260628-7">)</span><span·class="p">;</span><span·class="w"> |
| 305 | ····</span><span·class="nf">consolidate_bp_data</span><span·class="p"·data-group-id=" | 305 | ····</span><span·class="nf">consolidate_bp_data</span><span·class="p"·data-group-id="2244260628-8">(</span><span·class="ss">modp</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ci_rw</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="2244260628-8">)</span><span·class="p">;</span><span·class="w"> |
| 306 | ····</span><span·class="n">ASSERT</span><span·class="p"·data-group-id=" | 306 | ····</span><span·class="n">ASSERT</span><span·class="p"·data-group-id="2244260628-9">(</span><span·class="ss">ci_rw</span><span·class="p">-></span><span·class="ss">gen_bp</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="n">NULL</span><span·class="p"·data-group-id="2244260628-9">)</span><span·class="p">;</span><span·class="w"> |
| 307 | ····</span><span·class="nf">erts_seal_module</span><span·class="p"·data-group-id=" | 307 | ····</span><span·class="nf">erts_seal_module</span><span·class="p"·data-group-id="2244260628-10">(</span><span·class="err">&</span><span·class="ss">modp</span><span·class="p">-></span><span·class="ss">curr</span><span·class="p"·data-group-id="2244260628-10">)</span><span·class="p">;</span><span·class="w"> |
| 308 | </span><span·class="p"·data-group-id=" | 308 | </span><span·class="p"·data-group-id="2244260628-2">}</span></code></pre><p>Without·the·module·instance·there's·no·reliable·way·to·figure·out·the·writable |
| 309 | address·of·a·code·page,·and·we·rely·on·<em>address·space·layout·randomization</em> | 309 | address·of·a·code·page,·and·we·rely·on·<em>address·space·layout·randomization</em> |
| 310 | (ASLR)·to·make·it·difficult·to·guess.·On·some·platforms,·security·is·further | 310 | (ASLR)·to·make·it·difficult·to·guess.·On·some·platforms,·security·is·further |
| 311 | enhanced·by·protecting·the·writable·area·from·writes·until·the·module·has·been | 311 | enhanced·by·protecting·the·writable·area·from·writes·until·the·module·has·been |
| 312 | unsealed·by·<code·class="inline">erts_unseal_module</code>.</p><h3·id="export-tracing"·class="section-heading"> | 312 | unsealed·by·<code·class="inline">erts_unseal_module</code>.</p><h3·id="export-tracing"·class="section-heading"> |
| 313 | ··<a·href="#export-tracing"·class="hover-link"> | 313 | ··<a·href="#export-tracing"·class="hover-link"> |
| 314 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 314 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 315 | ··</a> | 315 | ··</a> |
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| 393 | </span><span·class="ss">perf</span><span·class="w">·</span><span·class="ss">script</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="ss">out</span><span·class="p">.</span><span·class="ss">perf</span><span·class="w"> | 393 | </span><span·class="ss">perf</span><span·class="w">·</span><span·class="ss">script</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="ss">out</span><span·class="p">.</span><span·class="ss">perf</span><span·class="w"> |
| 394 | </span><span·class="p">#</span><span·class="p">#</span><span·class="w">·</span><span·class="ss">run</span><span·class="w">·</span><span·class="ss">stackcollapse</span><span·class="w"> | 394 | </span><span·class="p">#</span><span·class="p">#</span><span·class="w">·</span><span·class="ss">run</span><span·class="w">·</span><span·class="ss">stackcollapse</span><span·class="w"> |
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| 163 | only·be·done·by·one·loader·process·at·a·time.·A·second·loader·process | 163 | only·be·done·by·one·loader·process·at·a·time.·A·second·loader·process |
| 164 | trying·to·enter·finishing·phase·will·be·suspended·until·the·first | 164 | trying·to·enter·finishing·phase·will·be·suspended·until·the·first |
| 165 | loader·is·done.·This·will·only·block·the·process,·the·scheduler·is | 165 | loader·is·done.·This·will·only·block·the·process,·the·scheduler·is |
| 166 | free·to·schedule·other·work·while·the·second·loader·is·waiting.·(See | 166 | free·to·schedule·other·work·while·the·second·loader·is·waiting.·(See |
| 167 | <code·class="inline">erts_try_seize_code_load_permission</code>·and | 167 | <code·class="inline">erts_try_seize_code_load_permission</code>·and |
| 168 | <code·class="inline">erts_release_code_load_permission</code>).</p><p>The·ability·to·prepare·several·modules·in·parallel·is·not·currently | 168 | <code·class="inline">erts_release_code_load_permission</code>).</p><p>The·ability·to·prepare·several·modules·in·parallel·is·not·currently |
| 169 | used·as·almost·all·code·loading·is·serialized·by·the·code_server | 169 | used·as·almost·all·code·loading·is·serialized·by·the·code_server |
| 170 | process.·The·BIF·interface·is·however·prepared·for·this.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">prepare_loading</span><span·class="p"·data-group-id="0731625702-1">(</span><span·class="n">Module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Code</span><span·class="p"·data-group-id="0731625702-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">LoaderState</span><span·class="w"> | ||
| 171 | 170 | process.·The·BIF·interface·is·however·prepared·for·this.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">prepare_loading</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·306,·SHA:·7b002dfd147a6c80c069ae43ef4c94d4c95b779efd8c800d557ced557f7f6d73·...·] | |
| 171 | ··</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">finish_loading</span><span·class="p"·data-group-id="2556591582-2">(</span><span·class="p"·data-group-id="2556591582-3">[</span><span·class="n">LoaderState</span><span·class="p"·data-group-id="2556591582-3">]</span><span·class="p"·data-group-id="2556591582-2">)</span></code></pre><p>The·idea·is·that·<code·class="inline">prepare_loading</code>·could·be·called·in·parallel·for | ||
| 172 | different·modules·and·returns·a·"magic·binary"·containing·the·internal | 172 | different·modules·and·returns·a·"magic·binary"·containing·the·internal |
| 173 | state·of·each·prepared·module.·Function·<code·class="inline">finish_loading</code>·could·take·a | 173 | state·of·each·prepared·module.·Function·<code·class="inline">finish_loading</code>·could·take·a |
| 174 | list·of·such·states·and·do·the·finishing·of·all·of·them·in·one·go.</p><p>Currently·we·use·the·legacy·BIF·<code·class="inline">erlang:load_module</code>·which·is·now | 174 | list·of·such·states·and·do·the·finishing·of·all·of·them·in·one·go.</p><p>Currently·we·use·the·legacy·BIF·<code·class="inline">erlang:load_module</code>·which·is·now |
| 175 | implemented·in·Erlang·by·calling·the·above·two·functions·in | 175 | implemented·in·Erlang·by·calling·the·above·two·functions·in |
| 176 | sequence.·Function·<code·class="inline">finish_loading</code>·is·limited·to·only·accepts·a·list | 176 | sequence.·Function·<code·class="inline">finish_loading</code>·is·limited·to·only·accepts·a·list |
| 177 | with·one·module·state·as·we·do·not·yet·use·the·multi·module·loading | 177 | with·one·module·state·as·we·do·not·yet·use·the·multi·module·loading |
| 178 | feature.</p><h2·id="the-finishing-sequence"·class="section-heading"> | 178 | feature.</p><h2·id="the-finishing-sequence"·class="section-heading"> |
| Offset 401, 21 lines modified | Offset 401, 21 lines modified | ||
| 401 | <a·href="erlang.html#put/2"><code·class="inline">put/2</code></a>·and·<a·href="erlang.html#get/1"><code·class="inline">get/1</code></a>·thing)·is·non-empty.</p><p>The·raw·memory·information·can·be·decoded·by·the·Crashdump·Viewer·tool.·You·can | 401 | <a·href="erlang.html#put/2"><code·class="inline">put/2</code></a>·and·<a·href="erlang.html#get/1"><code·class="inline">get/1</code></a>·thing)·is·non-empty.</p><p>The·raw·memory·information·can·be·decoded·by·the·Crashdump·Viewer·tool.·You·can |
| 402 | then·see·the·stack·dump,·the·message·queue·(if·any),·and·the·dictionary·(if | 402 | then·see·the·stack·dump,·the·message·queue·(if·any),·and·the·dictionary·(if |
| 403 | any).</p><p>The·stack·dump·is·a·dump·of·the·Erlang·process·stack.·Most·of·the·live·data | 403 | any).</p><p>The·stack·dump·is·a·dump·of·the·Erlang·process·stack.·Most·of·the·live·data |
| 404 | (that·is,·variables·currently·in·use)·are·placed·on·the·stack;·thus·this·can·be | 404 | (that·is,·variables·currently·in·use)·are·placed·on·the·stack;·thus·this·can·be |
| 405 | interesting.·One·has·to·"guess"·what·is·what,·but·as·the·information·is | 405 | interesting.·One·has·to·"guess"·what·is·what,·but·as·the·information·is |
| 406 | symbolic,·thorough·reading·of·this·information·can·be·useful.·As·an·example,·we | 406 | symbolic,·thorough·reading·of·this·information·can·be·useful.·As·an·example,·we |
| 407 | can·find·the·state·variable·of·the·Erlang·primitive·loader·online·<code·class="inline">(5)</code>·and | 407 | can·find·the·state·variable·of·the·Erlang·primitive·loader·online·<code·class="inline">(5)</code>·and |
| 408 | <code·class="inline">(6)</code>·in·the·following·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="1 | 408 | <code·class="inline">(6)</code>·in·the·following·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="1173940291-1">(</span><span·class="mi">1</span><span·class="p"·data-group-id="1173940291-1">)</span><span·class="w">··</span><span·class="mi">3</span><span·class="ss">cac44</span><span·class="w">···</span><span·class="n">Return</span><span·class="w">·</span[·...·truncated·by·diffoscope;·len:·425,·SHA:·516c85010484f018a892f1bddcb8d5b11f69f63a4f5c4a62e449e262b4282308·...·]-2">)</span><span·class="w"> |
| 409 | </span><span·class="p"·data-group-id="1 | 409 | </span><span·class="p"·data-group-id="1173940291-3">(</span><span·class="mi">2</span><span·class="p"·data-group-id="1173940291-3">)</span><span·class="w">··</span><span·class="nf">y</span><span·class="p"·data-group-id="1173940291-4">(</span><span·class="mi">0</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·93,·SHA:·dcc4fb94a8a7d06db9f02be5cffd6fa729b3c720850d40877aea55a141e9b49e·...·]-5">[</span><span·class="s">"/view/siri_r10_dev/clearcase/otp/erts/lib/kernel/ebin"</span><span·class="p">,</span><span·class="w"> |
| 410 | </span><span·class="p"·data-group-id="1 | 410 | </span><span·class="p"·data-group-id="1173940291-6">(</span><span·class="mi">3</span><span·class="p"·data-group-id="1173940291-6">)</span><span·class="w">············</span><span·class="s">"/view/siri_r10_dev/clearcase/otp/erts/lib/stdlib/ebin"</span><span·class="p"·data-group-id="117[·...·truncated·by·diffoscope;·len:·7,·SHA:·eb6fe2282e48686ffe83e4ff0cf153c545121e0d1c31e0f8d71ad6190d3c22e5·...·]-5">]</span><span·class="w"> |
| 411 | </span><span·class="p"·data-group-id="1 | 411 | </span><span·class="p"·data-group-id="1173940291-7">(</span><span·class="mi">4</span><span·class="p"·data-group-id="1173940291-7">)</span><span·class="w">··</span><span·class="nf">y</span><span·class="p"·data-group-id="1173940291-8">(</span><span·class="mi">1</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·12,·SHA:·dca005190b83cafa3e682cfaac21247d3745c364b6183f81670b524310f29934·...·]-8">)</span><span·class="w">·····</span><span·class="o"><</span><span·class="mf">0.1</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w"> |
| 412 | </span><span·class="p"·data-group-id="1 | 412 | </span><span·class="p"·data-group-id="1173940291-9">(</span><span·class="mi">5</span><span·class="p"·data-group-id="1173940291-9">)</span><span·class="w">··</span><span·class="nf">y</span><span·class="p"·data-group-id="1173940291-10">(</span><span·class="mi">2</span><span·class="p"·data-group-i[·...·truncated·by·diffoscope;·len:·256,·SHA:·d05da5fb7cef4af4961fd72538822fe4cd670a57261435e003b89ece4ebf4b5e·...·]-12">]</span><span·class="p">,</span><span·class="ss">none</span><span·class="p">,</span><span·class="p">#</span><span·class="n">Fun</span><span·class="o"><</span><span·class="ss">erl_prim_loader</span><span·class="p">.</span><span·class="mf">6.7085890</span><span·class="o">></span><span·class="p">,</span><span·class="ss">undefined</span><span·class="p">,</span><span·class="p">#</span><span·class="n">Fun</span><span·class="o"><</span><span·class="ss">erl_prim_loader</span><span·class="p">.</span><span·class="mf">7.9000327</span><span·class="o">></span><span·class="p">,</span><span·class="w"> |
| 413 | </span><span·class="p"·data-group-id="1 | 413 | </span><span·class="p"·data-group-id="1173940291-13">(</span><span·class="mi">6</span><span·class="p"·data-group-id="1173940291-13">)</span><span·class="w">············</span><span·class="p">#</span><span·class="n">Fun</span><span·class="o"><</span><span·class="ss">erl_prim_loader</span><spa[·...·truncated·by·diffoscope;·len:·560,·SHA:·36978b3e58f6f4e646f211221c5746bbd822b6c0d05faf0a2dee14a9a5baca73·...·]-11">}</span><span·class="w"> |
| 414 | </span><span·class="p"·data-group-id="1 | 414 | </span><span·class="p"·data-group-id="1173940291-14">(</span><span·class="mi">7</span><span·class="p"·data-group-id="1173940291-14">)</span><span·class="w">··</span><span·class="nf">y</span><span·class="p"·data-group-id="1173940291-15">(</span><span·class="mi">3</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·15,·SHA:·be2a7274827a628ac9ace9299d7f02c21a59c174d0f64a3d7d61dc47ec9c9f6f·...·]-15">)</span><span·class="w">·····</span><span·class="ss">infinity</span></code></pre><p>When·interpreting·the·data·for·a·process,·it·is·helpful·to·know·that·anonymous |
| 415 | function·objects·(funs)·are·given·the·following:</p><ul><li>A·name·constructed·from·the·name·of·the·function·in·which·they·are·created</li><li>A·number·(starting·with·0)·indicating·the·number·of·that·fun·within·that | 415 | function·objects·(funs)·are·given·the·following:</p><ul><li>A·name·constructed·from·the·name·of·the·function·in·which·they·are·created</li><li>A·number·(starting·with·0)·indicating·the·number·of·that·fun·within·that |
| 416 | function</li></ul><h2·id="atoms"·class="section-heading"> | 416 | function</li></ul><h2·id="atoms"·class="section-heading"> |
| 417 | ··<a·href="#atoms"·class="hover-link"> | 417 | ··<a·href="#atoms"·class="hover-link"> |
| 418 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 418 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 419 | ··</a> | 419 | ··</a> |
| 420 | ··<span·class="text">Atoms</span> | 420 | ··<span·class="text">Atoms</span> |
| 421 | </h2> | 421 | </h2> |
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| 364 | <p>Before·a·driver·can·be·called·from·Erlang,·it·must·be·loaded·and·opened.·Loading | 364 | <p>Before·a·driver·can·be·called·from·Erlang,·it·must·be·loaded·and·opened.·Loading |
| 365 | is·done·using·the·<a·href="../../../lib/kernel-10.2.3/doc/html/erl_ddll.html"><code·class="inline">erl_ddll</code></a>·module·(the·<a·href="../../../lib/kernel-10.2.3/doc/html/erl_ddll.html"><code·class="inline">erl_ddll</code></a>·driver·that·loads·dynamic | 365 | is·done·using·the·<a·href="../../../lib/kernel-10.2.3/doc/html/erl_ddll.html"><code·class="inline">erl_ddll</code></a>·module·(the·<a·href="../../../lib/kernel-10.2.3/doc/html/erl_ddll.html"><code·class="inline">erl_ddll</code></a>·driver·that·loads·dynamic |
| 366 | driver·is·actually·a·driver·itself).·If·loading·is·successful,·the·port·can·be | 366 | driver·is·actually·a·driver·itself).·If·loading·is·successful,·the·port·can·be |
| 367 | opened·with·<a·href="erlang.html#open_port/2"><code·class="inline">open_port/2</code></a>.·The·port·name·must·match·the·name·of | 367 | opened·with·<a·href="erlang.html#open_port/2"><code·class="inline">open_port/2</code></a>.·The·port·name·must·match·the·name·of |
| 368 | the·shared·library·and·the·name·in·the·driver·entry·structure.</p><p>When·the·port·has·been·opened,·the·driver·can·be·called.·In·the·<code·class="inline">pg_sync</code> | 368 | the·shared·library·and·the·name·in·the·driver·entry·structure.</p><p>When·the·port·has·been·opened,·the·driver·can·be·called.·In·the·<code·class="inline">pg_sync</code> |
| 369 | example,·we·do·not·have·any·data·from·the·port,·only·the·return·value·from·the | 369 | example,·we·do·not·have·any·data·from·the·port,·only·the·return·value·from·the |
| 370 | <a·href="erlang.html#port_control/3"><code·class="inline">port_control/3</code></a>.</p><p>The·following·code·is·the·Erlang·part·of·the·synchronous·postgres·driver, | 370 | <a·href="erlang.html#port_control/3"><code·class="inline">port_control/3</code></a>.</p><p>The·following·code·is·the·Erlang·part·of·the·synchronous·postgres·driver, |
| 371 | <code·class="inline">pg_sync.erl</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 371 | <code·class="inline">pg_sync.erl</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="0798395537-1">(</span><span·class="ss">pg_sync</span><span·class="p"·data-group-id="0798395537-1">)</span><span·class="p">.</span><span·class="w"> |
| 372 | </span><span·class="w"> | 372 | </span><span·class="w"> |
| 373 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id=" | 373 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="0798395537-2">(</span><span·class="n">DRV_CONNECT</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="0798395537-2">)</span><span·class="p">.</span><span·class="w"> |
| 374 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id=" | 374 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="0798395537-3">(</span><span·class="n">DRV_DISCONNECT</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">2</span><span·class="p"·data-group-id="0798395537-3">)</span><span·class="p">.</span><span·class="w"> |
| 375 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id=" | 375 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="0798395537-4">(</span><span·class="n">DRV_SELECT</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">3</span><span·class="p"·data-group-id="0798395537-4">)</span><span·class="p">.</span><span·class="w"> |
| 376 | </span><span·class="w"> | 376 | </span><span·class="w"> |
| 377 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 377 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="0798395537-5">(</span><span·class="p"·data-group-id="0798395537-6">[</span><span·class="ss">connect</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">disconnect</span><span·class="p">/</[·...·truncated·by·diffoscope;·len:·251,·SHA:·603d8d4a60852c82f95cc3cb3104fa6400ac47e21f0598df2a9b1db44e7cda63·...·]-5">)</span><span·class="p">.</span><span·class="w"> |
| 378 | </span><span·class="nf">connect</span><span·class="p"·data-group-id=" | 378 | </span><span·class="nf">connect</span><span·class="p"·data-group-id="0798395537-7">(</span><span·class="n">ConnectStr</span><span·class="p"·data-group-id="0798395537-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 379 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">erl_ddll</span><span·class="p">:</span><span·class="nf">load_driver</span><span·class="p"·data-group-id=" | 379 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">erl_ddll</span><span·class="p">:</span><span·class="nf">load_driver</span><span·class="p"·data-group-id="0798395537-8">(</span><span·class="s">"."</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"pg_sync"</span><span·class="p"·data-group-id="0798395537-8">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 380 | ········</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> | 380 | ········</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> |
| 381 | ········</span><span·class="p"·data-group-id=" | 381 | ········</span><span·class="p"·data-group-id="0798395537-9">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">already_loaded</span><span·class="p"·data-group-id="0798395537-9">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> |
| 382 | ········</span><span·class="n">E</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">exit</span><span·class="p"·data-group-id=" | 382 | ········</span><span·class="n">E</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">exit</span><span·class="p"·data-group-id="0798395537-10">(</span><span·class="p"·data-group-id="0798395537-11">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="n">E</span><span·class="p"·data-group-id="0798395537-11">}</span><span·class="p"·data-gro[·...·truncated·by·diffoscope;·len:·17,·SHA:·383cc3e2da6ff9ad8de3ad3975bfb5ecb13689418c56a34d36265aa22aaf593c·...·]-10">)</span><span·class="w"> |
| 383 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 383 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 384 | ····</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">open_port</span><span·class="p"·data-group-id=" | 384 | ····</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">open_port</span><span·class="p"·data-group-id="0798395537-12">(</span><span·class="p"·data-group-id="0798395537-13">{</span><span·class="nb">spawn</span><span·class="p">,</span><span·class="w">·</span><span·class="o">?</span><span·class="n">MODULE</span><span·class="p"·data-group-id="0798395537-13">}</[·...·truncated·by·diffoscope;·len:·202,·SHA:·07b3ecf7ac5efc83b047c347c15c8f3559e05535b3f2578984a045f1833e1eee·...·]-12">)</span><span·class="p">,</span><span·class="w"> |
| 385 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">binary_to_term</span><span·class="p"·data-group-id=" | 385 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">binary_to_term</span><span·class="p"·data-group-id="0798395537-15">(</span><span·class="nf">port_control</span><span·class="p"·data-group-id="0798395537-16">(</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="o">?</span><span·class="n">DRV_CONNECT</span><span·clas[·...·truncated·by·diffoscope;·len:·166,·SHA:·24c9f18d98bd8bdfe295d4eb831439b27410395f0166a091857d626fd1a2d4ad·...·]-15">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 386 | ········</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id=" | 386 | ········</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="0798395537-17">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Port</span><span·class="p"·data-group-id="0798395537-17">}</span><span·class="p">;</span><span·class="w"> |
| 387 | ········</span><span·class="n">Error</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Error</span><span·class="w"> | 387 | ········</span><span·class="n">Error</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Error</span><span·class="w"> |
| 388 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 388 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 389 | </span><span·class="nf">disconnect</span><span·class="p"·data-group-id=" | 389 | </span><span·class="nf">disconnect</span><span·class="p"·data-group-id="0798395537-18">(</span><span·class="n">Port</span><span·class="p"·data-group-id="0798395537-18">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 390 | ····</span><span·class="n">R</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">binary_to_term</span><span·class="p"·data-group-id=" | 390 | ····</span><span·class="n">R</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">binary_to_term</span><span·class="p"·data-group-id="0798395537-19">(</span><span·class="nf">port_control</span><span·class="p"·data-group-id="0798395537-20">(</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="o">?</span><span·class="n">DRV_DISCONNECT</span><span·c[·...·truncated·by·diffoscope;·len:·171,·SHA:·9091b0387b0a39d13925553dfd652030bcf5d6b7087026c3bdf435ec60557c71·...·]-19">)</span><span·class="p">,</span><span·class="w"> |
| 391 | ····</span><span·class="nf">port_close</span><span·class="p"·data-group-id=" | 391 | ····</span><span·class="nf">port_close</span><span·class="p"·data-group-id="0798395537-21">(</span><span·class="n">Port</span><span·class="p"·data-group-id="0798395537-21">)</span><span·class="p">,</span><span·class="w"> |
| 392 | ····</span><span·class="n">R</span><span·class="p">.</span><span·class="w"> | 392 | ····</span><span·class="n">R</span><span·class="p">.</span><span·class="w"> |
| 393 | </span><span·class="nf">select</span><span·class="p"·data-group-id=" | 393 | </span><span·class="nf">select</span><span·class="p"·data-group-id="0798395537-22">(</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Query</span><span·class="p"·data-group-id="0798395537-22">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 394 | ····</span><span·class="nf">binary_to_term</span><span·class="p"·data-group-id=" | 394 | ····</span><span·class="nf">binary_to_term</span><span·class="p"·data-group-id="0798395537-23">(</span><span·class="nf">port_control</span><span·class="p"·data-group-id="0798395537-24">(</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="o">?</span><span·class="n">DRV_SELECT</span><span·class[·...·truncated·by·diffoscope;·len:·160,·SHA:·1e13ba45d8be18f2fdc10949fbc968a1e9d37f75c3fec59f5d97d00d0e0dbdd5·...·]-23">)</span><span·class="p">.</span></code></pre><p>The·API·is·simple:</p><ul><li><code·class="inline">connect/1</code>·loads·the·driver,·opens·it,·and·logs·on·to·the·database,·returning |
| 395 | the·Erlang·port·if·successful.</li><li><code·class="inline">select/2</code>·sends·a·query·to·the·driver·and·returns·the·result.</li><li><code·class="inline">disconnect/1</code>·closes·the·database·connection·and·the·driver.·(However,·it | 395 | the·Erlang·port·if·successful.</li><li><code·class="inline">select/2</code>·sends·a·query·to·the·driver·and·returns·the·result.</li><li><code·class="inline">disconnect/1</code>·closes·the·database·connection·and·the·driver.·(However,·it |
| 396 | does·not·unload·it.)</li></ul><p>The·connection·string·is·to·be·a·connection·string·for·postgres.</p><p>The·driver·is·loaded·with·<a·href="../../../lib/kernel-10.2.3/doc/html/erl_ddll.html#load_driver/2"><code·class="inline">erl_ddll:load_driver/2</code></a>.·If·this·is·successful,·or·if | 396 | does·not·unload·it.)</li></ul><p>The·connection·string·is·to·be·a·connection·string·for·postgres.</p><p>The·driver·is·loaded·with·<a·href="../../../lib/kernel-10.2.3/doc/html/erl_ddll.html#load_driver/2"><code·class="inline">erl_ddll:load_driver/2</code></a>.·If·this·is·successful,·or·if |
| 397 | it·is·already·loaded,·it·is·opened.·This·will·call·the·<code·class="inline">start</code>·function·in·the | 397 | it·is·already·loaded,·it·is·opened.·This·will·call·the·<code·class="inline">start</code>·function·in·the |
| 398 | driver.</p><p>We·use·the·<a·href="erlang.html#port_control/3"><code·class="inline">port_control/3</code></a>·function·for·all·calls·into·the | 398 | driver.</p><p>We·use·the·<a·href="erlang.html#port_control/3"><code·class="inline">port_control/3</code></a>·function·for·all·calls·into·the |
| 399 | driver.·The·result·from·the·driver·is·returned·immediately·and·converted·to | 399 | driver.·The·result·from·the·driver·is·returned·immediately·and·converted·to |
| 400 | terms·by·calling·<a·href="erlang.html#binary_to_term/1"><code·class="inline">binary_to_term/1</code></a>.·(We·trust·that·the | 400 | terms·by·calling·<a·href="erlang.html#binary_to_term/1"><code·class="inline">binary_to_term/1</code></a>.·(We·trust·that·the |
| 401 | terms·returned·from·the·driver·are·well-formed,·otherwise·the·<a·href="erlang.html#binary_to_term/1"><code·class="inline">binary_to_term/1</code></a> | 401 | terms·returned·from·the·driver·are·well-formed,·otherwise·the·<a·href="erlang.html#binary_to_term/1"><code·class="inline">binary_to_term/1</code></a> |
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| 536 | successful,·or·error·if·it·is·not.·If·the·connection·is·not·yet·established,·we | 536 | successful,·or·error·if·it·is·not.·If·the·connection·is·not·yet·established,·we |
| 537 | simply·return;·<code·class="inline">ready_io</code>·is·called·again.</p><p>If·we·have·a·result·from·a·connect,·indicated·by·having·data·in·the·<code·class="inline">x</code>·buffer, | 537 | simply·return;·<code·class="inline">ready_io</code>·is·called·again.</p><p>If·we·have·a·result·from·a·connect,·indicated·by·having·data·in·the·<code·class="inline">x</code>·buffer, |
| 538 | we·no·longer·need·to·select·on·output·(<a·href="../../../erts-15.2.3/doc/html/driver_entry.html#ready_output"·title=""><code·class="inline">ready_output</code></a>),·so·we·remove·this·by | 538 | we·no·longer·need·to·select·on·output·(<a·href="../../../erts-15.2.3/doc/html/driver_entry.html#ready_output"·title=""><code·class="inline">ready_output</code></a>),·so·we·remove·this·by |
| 539 | calling·<a·href="../../../erts-15.2.3/doc/html/erl_driver.html#driver_select"·title=""><code·class="inline">driver_select</code></a>.</p><p>If·we·are·not·connecting,·we·wait·for·results·from·a·<code·class="inline">PQsendQuery</code>,·so·we·get | 539 | calling·<a·href="../../../erts-15.2.3/doc/html/erl_driver.html#driver_select"·title=""><code·class="inline">driver_select</code></a>.</p><p>If·we·are·not·connecting,·we·wait·for·results·from·a·<code·class="inline">PQsendQuery</code>,·so·we·get |
| 540 | the·result·and·return·it.·The·encoding·is·done·with·the·same·functions·as·in·the | 540 | the·result·and·return·it.·The·encoding·is·done·with·the·same·functions·as·in·the |
| 541 | earlier·example.</p><p>Error·handling·is·to·be·added·here,·for·example,·checking·that·the·socket·is | 541 | earlier·example.</p><p>Error·handling·is·to·be·added·here,·for·example,·checking·that·the·socket·is |
| 542 | still·open,·but·this·is·only·a·simple·example.</p><p>The·Erlang·part·of·the·asynchronous·driver·consists·of·the·sample·file | 542 | still·open,·but·this·is·only·a·simple·example.</p><p>The·Erlang·part·of·the·asynchronous·driver·consists·of·the·sample·file |
| 543 | <code·class="inline">pg_async.erl</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 543 | <code·class="inline">pg_async.erl</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="6158484456-1">(</span><span·class="ss">pg_async</span><span·class="p"·data-group-id="6158484456-1">)</span><span·class="p">.</span><span·class="w"> |
| 544 | </span><span·class="w"> | 544 | </span><span·class="w"> |
| 545 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id=" | 545 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="6158484456-2">(</span><span·class="n">DRV_CONNECT</span><span·class="p">,</span><span·class="w">·</span><span·class="sc">$C</span><span·class="p"·data-group-id="6158484456-2">)</span><span·class="p">.</span><span·class="w"> |
| 546 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id=" | 546 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="6158484456-3">(</span><span·class="n">DRV_DISCONNECT</span><span·class="p">,</span><span·class="w">·</span><span·class="sc">$D</span><span·class="p"·data-group-id="6158484456-3">)</span><span·class="p">.</span><span·class="w"> |
| 547 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id=" | 547 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="6158484456-4">(</span><span·class="n">DRV_SELECT</span><span·class="p">,</span><span·class="w">·</span><span·class="sc">$S</span><span·class="p"·data-group-id="6158484456-4">)</span><span·class="p">.</span><span·class="w"> |
| 548 | </span><span·class="w"> | 548 | </span><span·class="w"> |
| 549 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 549 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="6158484456-5">(</span><span·class="p"·data-group-id="6158484456-6">[</span><span·class="ss">connect</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">disconnect</span><span·class="p">/</[·...·truncated·by·diffoscope;·len:·251,·SHA:·ded25f3e3117ca8a783c24b74f6e2a9bb67df026f9902845aa90b0d1510dcfc2·...·]-5">)</span><span·class="p">.</span><span·class="w"> |
| 550 | </span><span·class="nf">connect</span><span·class="p"·data-group-id=" | 550 | </span><span·class="nf">connect</span><span·class="p"·data-group-id="6158484456-7">(</span><span·class="n">ConnectStr</span><span·class="p"·data-group-id="6158484456-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 551 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">erl_ddll</span><span·class="p">:</span><span·class="nf">load_driver</span><span·class="p"·data-group-id=" | 551 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">erl_ddll</span><span·class="p">:</span><span·class="nf">load_driver</span><span·class="p"·data-group-id="6158484456-8">(</span><span·class="s">"."</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"pg_async"</span><span·class="p"·data-group-id="6158484456-8">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 552 | ········</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> | 552 | ········</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> |
| 553 | ········</span><span·class="p"·data-group-id=" | 553 | ········</span><span·class="p"·data-group-id="6158484456-9">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">already_loaded</span><span·class="p"·data-group-id="6158484456-9">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> |
| 554 | ········</span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">exit</span><span·class="p"·data-group-id=" | 554 | ········</span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">exit</span><span·class="p"·data-group-id="6158484456-10">(</span><span·class="p"·data-group-id="6158484456-11">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">could_not_load_driver</span><span·class="p"·data-group-id="6158484456-11">}</span><sp[·...·truncated·by·diffoscope;·len:·38,·SHA:·57ec1660f00126ed453fad5853118b0f9f87acdc4aff3e5e76e1dfb660ff2fa1·...·]-10">)</span><span·class="w"> |
| 555 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 555 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 556 | ····</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">open_port</span><span·class="p"·data-group-id=" | 556 | ····</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">open_port</span><span·class="p"·data-group-id="6158484456-12">(</span><span·class="p"·data-group-id="6158484456-13">{</span><span·class="nb">spawn</span><span·class="p">,</span><span·class="w">·</span><span·class="o">?</span><span·class="n">MODULE</span><span·class="p"·data-group-id="6158484456-13">}</[·...·truncated·by·diffoscope;·len:·232,·SHA:·246dff7af2d09b366760e88449d591dc3e74dbaeb912e19aa8263482343096a5·...·]-12">)</span><span·class="p">,</span><span·class="w"> |
| 557 | ····</span><span·class="nf">port_control</span><span·class="p"·data-group-id=" | 557 | ····</span><span·class="nf">port_control</span><span·class="p"·data-group-id="6158484456-15">(</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="o">?</span><span·class="n">DRV_CONNECT</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ConnectStr</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·22,·SHA:·f4d1d70d3014309800c82ceacc3ee7e75f75b11885302fcf19f6e51ca1c4b786·...·]-15">)</span><span·class="p">,</span><span·class="w"> |
| 558 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">return_port_data</span><span·class="p"·data-group-id=" | 558 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">return_port_data</span><span·class="p"·data-group-id="6158484456-16">(</span><span·class="n">Port</span><span·class="p"·data-group-id="6158484456-16">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 559 | ········</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 559 | ········</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 560 | ············</span><span·class="p"·data-group-id=" | 560 | ············</span><span·class="p"·data-group-id="6158484456-17">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Port</span><span·class="p"·data-group-id="6158484456-17">}</span><span·class="p">;</span><span·class="w"> |
| 561 | ········</span><span·class="n">Error</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 561 | ········</span><span·class="n">Error</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 562 | ············</span><span·class="n">Error</span><span·class="w"> | 562 | ············</span><span·class="n">Error</span><span·class="w"> |
| 563 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 563 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 564 | </span><span·class="nf">disconnect</span><span·class="p"·data-group-id=" | 564 | </span><span·class="nf">disconnect</span><span·class="p"·data-group-id="6158484456-18">(</span><span·class="n">Port</span><span·class="p"·data-group-id="6158484456-18">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 565 | ····</span><span·class="nf">port_control</span><span·class="p"·data-group-id=" | 565 | ····</span><span·class="nf">port_control</span><span·class="p"·data-group-id="6158484456-19">(</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="o">?</span><span·class="n">DRV_DISCONNECT</span><span·class="p">,</span><span·class="w">·</span><span·class="s">""</span><span·class="p[·...·truncated·by·diffoscope;·len:·27,·SHA:·c6d5e28594a0a935c4ba7d1c20469528df0689a016f1adf6862062739969c58a·...·]-19">)</span><span·class="p">,</span><span·class="w"> |
| 566 | ····</span><span·class="n">R</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">return_port_data</span><span·class="p"·data-group-id=" | 566 | ····</span><span·class="n">R</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">return_port_data</span><span·class="p"·data-group-id="6158484456-20">(</span><span·class="n">Port</span><span·class="p"·data-group-id="6158484456-20">)</span><span·class="p">,</span><span·class="w"> |
| 567 | ····</span><span·class="nf">port_close</span><span·class="p"·data-group-id=" | 567 | ····</span><span·class="nf">port_close</span><span·class="p"·data-group-id="6158484456-21">(</span><span·class="n">Port</span><span·class="p"·data-group-id="6158484456-21">)</span><span·class="p">,</span><span·class="w"> |
| 568 | ····</span><span·class="n">R</span><span·class="p">.</span><span·class="w"> | 568 | ····</span><span·class="n">R</span><span·class="p">.</span><span·class="w"> |
| 569 | </span><span·class="nf">select</span><span·class="p"·data-group-id=" | 569 | </span><span·class="nf">select</span><span·class="p"·data-group-id="6158484456-22">(</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Query</span><span·class="p"·data-group-id="6158484456-22">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 570 | ····</span><span·class="nf">port_control</span><span·class="p"·data-group-id=" | 570 | ····</span><span·class="nf">port_control</span><span·class="p"·data-group-id="6158484456-23">(</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="o">?</span><span·class="n">DRV_SELECT</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Query</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·16,·SHA:·65821967aba60bae7970d7e19f80953cddb127c8f3c6082ae5c04b7822f4122b·...·]-23">)</span><span·class="p">,</span><span·class="w"> |
| 571 | ····</span><span·class="nf">return_port_data</span><span·class="p"·data-group-id=" | 571 | ····</span><span·class="nf">return_port_data</span><span·class="p"·data-group-id="6158484456-24">(</span><span·class="n">Port</span><span·class="p"·data-group-id="6158484456-24">)</span><span·class="p">.</span><span·class="w"> |
| 572 | </span><span·class="nf">return_port_data</span><span·class="p"·data-group-id=" | 572 | </span><span·class="nf">return_port_data</span><span·class="p"·data-group-id="6158484456-25">(</span><span·class="n">Port</span><span·class="p"·data-group-id="6158484456-25">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 573 | ····</span><span·class="k">receive</span><span·class="w"> | 573 | ····</span><span·class="k">receive</span><span·class="w"> |
| 574 | ········</span><span·class="p"·data-group-id=" | 574 | ········</span><span·class="p"·data-group-id="6158484456-26">{</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6158484456-27">{</span><span·class="ss">data</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><[·...·truncated·by·diffoscope;·len:·94,·SHA:·d14df4855c9cdccb50e1a5023c9146762f9a0c10b5afcc968612f5a9dbebbde6·...·]-26">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 575 | ············</span><span·class="nf">binary_to_term</span><span·class="p"·data-group-id=" | 575 | ············</span><span·class="nf">binary_to_term</span><span·class="p"·data-group-id="6158484456-28">(</span><span·class="n">Data</span><span·class="p"·data-group-id="6158484456-28">)</span><span·class="w"> |
| 576 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>The·Erlang·code·is·slightly·different,·as·we·do·not·return·the·result | 576 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>The·Erlang·code·is·slightly·different,·as·we·do·not·return·the·result |
| 577 | synchronously·from·<a·href="erlang.html#port_control/3"><code·class="inline">port_control/3</code></a>,·instead·we·get·it·from·<a·href="../../../erts-15.2.3/doc/html/erl_driver.html#driver_output"·title=""><code·class="inline">driver_output</code></a>·as | 577 | synchronously·from·<a·href="erlang.html#port_control/3"><code·class="inline">port_control/3</code></a>,·instead·we·get·it·from·<a·href="../../../erts-15.2.3/doc/html/erl_driver.html#driver_output"·title=""><code·class="inline">driver_output</code></a>·as |
| 578 | data·in·the·message·queue.·The·function·<code·class="inline">return_port_data</code>·above·receives·data | 578 | data·in·the·message·queue.·The·function·<code·class="inline">return_port_data</code>·above·receives·data |
| 579 | from·the·port.·As·the·data·is·in·binary·format,·we·use | 579 | from·the·port.·As·the·data·is·in·binary·format,·we·use |
| 580 | <a·href="erlang.html#binary_to_term/1"><code·class="inline">binary_to_term/1</code></a>·to·convert·it·to·an·Erlang·term.·Notice | 580 | <a·href="erlang.html#binary_to_term/1"><code·class="inline">binary_to_term/1</code></a>·to·convert·it·to·an·Erlang·term.·Notice |
| 581 | that·the·driver·is·opened·in·binary·mode·(<a·href="erlang.html#open_port/2"><code·class="inline">open_port/2</code></a>·is | 581 | that·the·driver·is·opened·in·binary·mode·(<a·href="erlang.html#open_port/2"><code·class="inline">open_port/2</code></a>·is |
| 582 | called·with·option·<code·class="inline">[binary]</code>).·This·means·that·data·sent·from·the·driver·to·the | 582 | called·with·option·<code·class="inline">[binary]</code>).·This·means·that·data·sent·from·the·driver·to·the |
| Offset 677, 59 lines modified | Offset 677, 59 lines modified | ||
| 677 | ····*rp++·=·ERL_DRV_LIST; | 677 | ····*rp++·=·ERL_DRV_LIST; |
| 678 | ····*rp++·=·n+1; | 678 | ····*rp++·=·n+1; |
| 679 | ····driver_output_term(port,·result,·result_n); | 679 | ····driver_output_term(port,·result,·result_n); |
| 680 | ····delete[]·result; | 680 | ····delete[]·result; |
| 681 | ····delete·d; | 681 | ····delete·d; |
| 682 | }</code></pre><p>This·driver·is·called·like·the·others·from·Erlang.·However,·as·we·use | 682 | }</code></pre><p>This·driver·is·called·like·the·others·from·Erlang.·However,·as·we·use |
| 683 | <a·href="../../../erts-15.2.3/doc/html/erl_driver.html#driver_output_term"·title=""><code·class="inline">driver_output_term</code></a>,·there·is·no·need·to·call·<a·href="erlang.html#binary_to_term/1"><code·class="inline">binary_to_term/1</code></a>.·The·Erlang·code | 683 | <a·href="../../../erts-15.2.3/doc/html/erl_driver.html#driver_output_term"·title=""><code·class="inline">driver_output_term</code></a>,·there·is·no·need·to·call·<a·href="erlang.html#binary_to_term/1"><code·class="inline">binary_to_term/1</code></a>.·The·Erlang·code |
| 684 | is·in·the·sample·file·<code·class="inline">next_perm.erl</code>.</p><p>The·input·is·changed·into·a·list·of·integers·and·sent·to·the·driver.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="9 | 684 | is·in·the·sample·file·<code·class="inline">next_perm.erl</code>.</p><p>The·input·is·changed·into·a·list·of·integers·and·sent·to·the·driver.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="9601618078-1">(</span><span·class="ss">next_perm</span><span·class="p"·data-group-id="9601618078-1">)</span><span·class="p">.</span><span·class="w"> |
| 685 | </span><span·class="w"> | 685 | </span><span·class="w"> |
| 686 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="9 | 686 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="9601618078-2">(</span><span·class="p"·data-group-id="9601618078-3">[</span><span·class="ss">next_perm</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">prev_perm</span><span·class="p">/</[·...·truncated·by·diffoscope;·len:·378,·SHA:·bf4011921f6a86e57c310a7db38a2c328f233875fa0a1565dc73643982430ffb·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 687 | </span><span·class="nf">load</span><span·class="p"·data-group-id="9 | 687 | </span><span·class="nf">load</span><span·class="p"·data-group-id="9601618078-4">(</span><span·class="p"·data-group-id="9601618078-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 688 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">whereis</span><span·class="p"·data-group-id="9 | 688 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">whereis</span><span·class="p"·data-group-id="9601618078-5">(</span><span·class="ss">next_perm</span><span·class="p"·data-group-id="9601618078-5">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 689 | ········</span><span·class="ss">undefined</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 689 | ········</span><span·class="ss">undefined</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 690 | ············</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">erl_ddll</span><span·class="p">:</span><span·class="nf">load_driver</span><span·class="p"·data-group-id="9 | 690 | ············</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">erl_ddll</span><span·class="p">:</span><span·class="nf">load_driver</span><span·class="p"·data-group-id="9601618078-6">(</span><span·class="s">"."</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"next_perm"</span><span·class="p"·data-group-id="9601618078-6">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 691 | ················</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> | 691 | ················</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> |
| 692 | ················</span><span·class="p"·data-group-id="9 | 692 | ················</span><span·class="p"·data-group-id="9601618078-7">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">already_loaded</span><span·class="p"·data-group-id="9601618078-7">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> |
| 693 | ················</span><span·class="n">E</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">exit</span><span·class="p"·data-group-id="9 | 693 | ················</span><span·class="n">E</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">exit</span><span·class="p"·data-group-id="9601618078-8">(</span><span·class="n">E</span><span·class="p"·data-group-id="9601618078-8">)</span><span·class="w"> |
| 694 | ············</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 694 | ············</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 695 | ············</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">open_port</span><span·class="p"·data-group-id="9 | 695 | ············</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">open_port</span><span·class="p"·data-group-id="9601618078-9">(</span><span·class="p"·data-group-id="9601618078-10">{</span><span·class="nb">spawn</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"next_perm"</span><span·class="p"·data-group-id="9601618078-10">}</span><span·[·...·truncated·by·diffoscope;·len:·191,·SHA:·1f11ff464c239a226e095e0c1a3af5d0f6f6ea2cee1bcdd1caa4e30c2ad656ef·...·]-9">)</span><span·class="p">,</span><span·class="w"> |
| 696 | ············</span><span·class="nf">register</span><span·class="p"·data-group-id="9 | 696 | ············</span><span·class="nf">register</span><span·class="p"·data-group-id="9601618078-12">(</span><span·class="ss">next_perm</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Port</span><span·class="p"·data-group-id="9601618078-12">)</span><span·class="p">;</span><span·class="w"> |
| 697 | ········</span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 697 | ········</span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 698 | ············</span><span·class="ss">ok</span><span·class="w"> | 698 | ············</span><span·class="ss">ok</span><span·class="w"> |
| 699 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 699 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 700 | </span><span·class="nf">list_to_integer_binaries</span><span·class="p"·data-group-id="9 | 700 | </span><span·class="nf">list_to_integer_binaries</span><span·class="p"·data-group-id="9601618078-13">(</span><span·class="n">L</span><span·class="p"·data-group-id="9601618078-13">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 701 | ····</span><span·class="p"·data-group-id="9 | 701 | ····</span><span·class="p"·data-group-id="9601618078-14">[</span><span·class="p"·data-group-id="9601618078-15"><<</span><span·class="n">I</span><span·class="p">:</span><span·class="mi">32</span><span·class="o">/</span><span·class="ss">integer</span><span·class="o">-</span><span·class="ss">nat[·...·truncated·by·diffoscope;·len:·309,·SHA:·5017d406e33b3b3af61d2835dad4698dae344523c6132e434e373fb729ecce0d·...·]-14">]</span><span·class="p">.</span><span·class="w"> |
| 702 | </span><span·class="nf">next_perm</span><span·class="p"·data-group-id="9 | 702 | </span><span·class="nf">next_perm</span><span·class="p"·data-group-id="9601618078-16">(</span><span·class="n">L</span><span·class="p"·data-group-id="9601618078-16">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 703 | ····</span><span·class="nf">next_perm</span><span·class="p"·data-group-id="9 | 703 | ····</span><span·class="nf">next_perm</span><span·class="p"·data-group-id="9601618078-17">(</span><span·class="n">L</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="9601618078-17">)</span><span·class="p">.</span><span·class="w"> |
| 704 | </span><span·class="nf">prev_perm</span><span·class="p"·data-group-id="9 | 704 | </span><span·class="nf">prev_perm</span><span·class="p"·data-group-id="9601618078-18">(</span><span·class="n">L</span><span·class="p"·data-group-id="9601618078-18">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 705 | ····</span><span·class="nf">next_perm</span><span·class="p"·data-group-id="9 | 705 | ····</span><span·class="nf">next_perm</span><span·class="p"·data-group-id="9601618078-19">(</span><span·class="n">L</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">2</span><span·class="p"·data-group-id="9601618078-19">)</span><span·class="p">.</span><span·class="w"> |
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| 149 | runtime·system,·more·specifically·to·the·<code·class="inline">init</code>·system·process,·see·<a·href="init.html"><code·class="inline">init</code></a>.</p><p>The·<code·class="inline">init</code>·process·itself·interprets·some·of·these·flags,·the·<em>init·flags</em>.·It | 149 | runtime·system,·more·specifically·to·the·<code·class="inline">init</code>·system·process,·see·<a·href="init.html"><code·class="inline">init</code></a>.</p><p>The·<code·class="inline">init</code>·process·itself·interprets·some·of·these·flags,·the·<em>init·flags</em>.·It |
| 150 | also·stores·any·remaining·flags,·the·<em>user·flags</em>.·The·latter·can·be·retrieved | 150 | also·stores·any·remaining·flags,·the·<em>user·flags</em>.·The·latter·can·be·retrieved |
| 151 | by·calling·<a·href="init.html#get_argument/1"><code·class="inline">init:get_argument/1</code></a>.</p><p>A·small·number·of·"-"·flags·exist,·which·now·actually·are·emulator·flags,·see | 151 | by·calling·<a·href="init.html#get_argument/1"><code·class="inline">init:get_argument/1</code></a>.</p><p>A·small·number·of·"-"·flags·exist,·which·now·actually·are·emulator·flags,·see |
| 152 | the·description·below.</p></li><li><p>Plain·arguments·are·not·interpreted·in·any·way.·They·are·also·stored·by·the | 152 | the·description·below.</p></li><li><p>Plain·arguments·are·not·interpreted·in·any·way.·They·are·also·stored·by·the |
| 153 | <code·class="inline">init</code>·process·and·can·be·retrieved·by·calling·<a·href="init.html#get_plain_arguments/0"><code·class="inline">init:get_plain_arguments/0</code></a>. | 153 | <code·class="inline">init</code>·process·and·can·be·retrieved·by·calling·<a·href="init.html#get_plain_arguments/0"><code·class="inline">init:get_plain_arguments/0</code></a>. |
| 154 | Plain·arguments·can·occur·before·the·first·flag,·or·after·a·<code·class="inline">--</code>·flag.·Also, | 154 | Plain·arguments·can·occur·before·the·first·flag,·or·after·a·<code·class="inline">--</code>·flag.·Also, |
| 155 | the·<code·class="inline">-extra</code>·flag·causes·everything·that·follows·to·become·plain·arguments.</p></li></ul><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl·+W·w·-sname·arnie·+R·9·-s·my_init·-extra·+bertie</span><span·class="gp·unselectable"> | 155 | the·<code·class="inline">-extra</code>·flag·causes·everything·that·follows·to·become·plain·arguments.</p></li></ul><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl·+W·w·-sname·arnie·+R·9·-s·my_init·-extra·+bertie</span><span·class="gp·unselectable"> |
| 156 | (arnie@host)1>·</span><span·class="nc">init</span><span·class="p">:</span><span·class="nf">get_argument</span><span·class="p"·data-group-id=" | 156 | (arnie@host)1>·</span><span·class="nc">init</span><span·class="p">:</span><span·class="nf">get_argument</span><span·class="p"·data-group-id="2874453777-1">(</span><span·class="ss">sname</span><span·class="p"·data-group-id="2874453777-1">)</span><span·class="p">.</span><span·class="w"> |
| 157 | </span><span·class="p"·data-group-id=" | 157 | </span><span·class="p"·data-group-id="2874453777-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="2874453777-3">[</span><span·class="p"·data-group-id="2874453777-4">[</span><span·class="s">"arnie"</span><span·class="p"·data-group-id="2874453[·...·truncated·by·diffoscope;·len:·109,·SHA:·934323bc16b1c81ed19f925926949ce453cc835fd089519caa869fcd61eb0467·...·]-2">}</span><span·class="gp·unselectable"> |
| 158 | (arnie@host)2>·</span><span·class="nc">init</span><span·class="p">:</span><span·class="nf">get_plain_arguments</span><span·class="p"·data-group-id=" | 158 | (arnie@host)2>·</span><span·class="nc">init</span><span·class="p">:</span><span·class="nf">get_plain_arguments</span><span·class="p"·data-group-id="2874453777-5">(</span><span·class="p"·data-group-id="2874453777-5">)</span><span·class="p">.</span><span·class="w"> |
| 159 | </span><span·class="p"·data-group-id=" | 159 | </span><span·class="p"·data-group-id="2874453777-6">[</span><span·class="s">"+bertie"</span><span·class="p"·data-group-id="2874453777-6">]</span></code></pre><p>Here·<code·class="inline">+W·w</code>·and·<code·class="inline">+R·9</code>·are·emulator·flags.·<code·class="inline">-s·my_init</code>·is·an·init·flag, |
| 160 | interpreted·by·<code·class="inline">init</code>.·<code·class="inline">-sname·arnie</code>·is·a·user·flag,·stored·by·<code·class="inline">init</code>.·It·is | 160 | interpreted·by·<code·class="inline">init</code>.·<code·class="inline">-sname·arnie</code>·is·a·user·flag,·stored·by·<code·class="inline">init</code>.·It·is |
| 161 | read·by·Kernel·and·causes·the·Erlang·runtime·system·to·become·distributed. | 161 | read·by·Kernel·and·causes·the·Erlang·runtime·system·to·become·distributed. |
| 162 | Finally,·everything·after·<code·class="inline">-extra</code>·(that·is,·<code·class="inline">+bertie</code>)·is·considered·as·plain | 162 | Finally,·everything·after·<code·class="inline">-extra</code>·(that·is,·<code·class="inline">+bertie</code>)·is·considered·as·plain |
| 163 | arguments.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl·-myflag·1</span><span·class="gp·unselectable"> | 163 | arguments.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl·-myflag·1</span><span·class="gp·unselectable"> |
| 164 | 1>·</span><span·class="nc">init</span><span·class="p">:</span><span·class="nf">get_argument</span><span·class="p"·data-group-id=" | 164 | 1>·</span><span·class="nc">init</span><span·class="p">:</span><span·class="nf">get_argument</span><span·class="p"·data-group-id="2466661211-1">(</span><span·class="ss">myflag</span><span·class="p"·data-group-id="2466661211-1">)</span><span·class="p">.</span><span·class="w"> |
| 165 | </span><span·class="p"·data-group-id=" | 165 | </span><span·class="p"·data-group-id="2466661211-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="2466661211-3">[</span><span·class="p"·data-group-id="2466661211-4">[</span><span·class="s">"1"</span><span·class="p"·data-group-id="2466661211-[·...·truncated·by·diffoscope;·len:·105,·SHA:·a53fdb557e626fe8a561c4c605c26d2382ef17a3a10b3b2cc3cccb30f29d137f·...·]-2">}</span><span·class="gp·unselectable"> |
| 166 | 2>·</span><span·class="nc">init</span><span·class="p">:</span><span·class="nf">get_plain_arguments</span><span·class="p"·data-group-id=" | 166 | 2>·</span><span·class="nc">init</span><span·class="p">:</span><span·class="nf">get_plain_arguments</span><span·class="p"·data-group-id="2466661211-5">(</span><span·class="p"·data-group-id="2466661211-5">)</span><span·class="p">.</span><span·class="w"> |
| 167 | </span><span·class="p"·data-group-id=" | 167 | </span><span·class="p"·data-group-id="2466661211-6">[</span><span·class="p"·data-group-id="2466661211-6">]</span></code></pre><p>Here·the·user·flag·<code·class="inline">-myflag·1</code>·is·passed·to·and·stored·by·the·<code·class="inline">init</code>·process.·It |
| 168 | is·a·user-defined·flag,·presumably·used·by·some·user-defined·application.</p><h2·id="flags"·class="section-heading"> | 168 | is·a·user-defined·flag,·presumably·used·by·some·user-defined·application.</p><h2·id="flags"·class="section-heading"> |
| 169 | ··<a·href="#flags"·class="hover-link"> | 169 | ··<a·href="#flags"·class="hover-link"> |
| 170 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 170 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 171 | ··</a> | 171 | ··</a> |
| 172 | ··<span·class="text">Flags</span> | 172 | ··<span·class="text">Flags</span> |
| 173 | </h2> | 173 | </h2> |
| 174 | <p>In·the·following·list,·init·flags·are·marked·"(init·flag)".·Unless·otherwise | 174 | <p>In·the·following·list,·init·flags·are·marked·"(init·flag)".·Unless·otherwise |
| Offset 700, 15 lines modified | Offset 700, 15 lines modified | ||
| 700 | processes)·into·a·smaller·set·of·schedulers·when·schedulers·frequently·run | 700 | processes)·into·a·smaller·set·of·schedulers·when·schedulers·frequently·run |
| 701 | out·of·work.·When·disabled,·the·frequency·with·which·schedulers·run·out·of | 701 | out·of·work.·When·disabled,·the·frequency·with·which·schedulers·run·out·of |
| 702 | work·is·not·taken·into·account·by·the·load·balancing·logic.</p><p><code·class="inline">+scl·false</code>·is·similar·to·<a·href="#%2Bsub"><code·class="inline">+sub·true</code></a>,·but·<code·class="inline">+sub·true</code> | 702 | work·is·not·taken·into·account·by·the·load·balancing·logic.</p><p><code·class="inline">+scl·false</code>·is·similar·to·<a·href="#%2Bsub"><code·class="inline">+sub·true</code></a>,·but·<code·class="inline">+sub·true</code> |
| 703 | also·balances·scheduler·utilization·between·schedulers.</p></li><li><p><strong><code·class="inline"·id="+sct">+sct·CpuTopology</code></strong>·-·Sets·a·user-defined·CPU·topology. | 703 | also·balances·scheduler·utilization·between·schedulers.</p></li><li><p><strong><code·class="inline"·id="+sct">+sct·CpuTopology</code></strong>·-·Sets·a·user-defined·CPU·topology. |
| 704 | The·user-defined·CPU·topology·overrides | 704 | The·user-defined·CPU·topology·overrides |
| 705 | any·automatically·detected·CPU·topology.·The·CPU·topology·is·used·when | 705 | any·automatically·detected·CPU·topology.·The·CPU·topology·is·used·when |
| 706 | <a·href="#%2Bsbt">binding·schedulers·to·logical·processors</a>.·This·option·must·be·before | 706 | <a·href="#%2Bsbt">binding·schedulers·to·logical·processors</a>.·This·option·must·be·before |
| 707 | <a·href="#%2Bsbt"><code·class="inline">+sbt</code></a>·on·the·command-line.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o"><</span><span·class="n">Id</span><span·class="o">></span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="0 | 707 | <a·href="#%2Bsbt"><code·class="inline">+sbt</code></a>·on·the·command-line.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o"><</span><span·class="n">Id</span><span·class="o">></span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="0425182861-1">(</span><span·class="p"·data-group-id="0425182861-1">)</span><span·class="p">;</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="o">=<</span><span·class="w">·</span><span·class="o"><</span><span·class="n">Id</span><span·class="o">></span><span·class="w">·</span><span·class="o">=<</span><span·class="w">·</span><span·class="mi">65535</span><span·class="w"> |
| 708 | </span><span·class="o"><</span><span·class="n">IdRange</span><span·class="o">></span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o"><</span><span·class="n">Id</span><span·class="o">></span><span·class="o">-</span><span·class="o"><</span><span·class="n">Id</span><span·class="o">></span><span·class="w"> | 708 | </span><span·class="o"><</span><span·class="n">IdRange</span><span·class="o">></span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o"><</span><span·class="n">Id</span><span·class="o">></span><span·class="o">-</span><span·class="o"><</span><span·class="n">Id</span><span·class="o">></span><span·class="w"> |
| 709 | </span><span·class="o"><</span><span·class="n">IdOrIdRange</span><span·class="o">></span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o"><</span><span·class="n">Id</span><span·class="o">></span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="o"><</span><span·class="n">IdRange</span><span·class="o">></span><span·class="w"> | 709 | </span><span·class="o"><</span><span·class="n">IdOrIdRange</span><span·class="o">></span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o"><</span><span·class="n">Id</span><span·class="o">></span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="o"><</span><span·class="n">IdRange</span><span·class="o">></span><span·class="w"> |
| 710 | </span><span·class="o"><</span><span·class="n">IdList</span><span·class="o">></span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o"><</span><span·class="n">IdOrIdRange</span><span·class="o">></span><span·class="p">,</span><span·class="o"><</span><span·class="n">IdOrIdRange</span><span·class="o">></span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="o"><</span><span·class="n">IdOrIdRange</span><span·class="o">></span><span·class="w"> | 710 | </span><span·class="o"><</span><span·class="n">IdList</span><span·class="o">></span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o"><</span><span·class="n">IdOrIdRange</span><span·class="o">></span><span·class="p">,</span><span·class="o"><</span><span·class="n">IdOrIdRange</span><span·class="o">></span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="o"><</span><span·class="n">IdOrIdRange</span><span·class="o">></span><span·class="w"> |
| 711 | </span><span·class="o"><</span><span·class="n">LogicalIds</span><span·class="o">></span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">L</span><span·class="o"><</span><span·class="n">IdList</span><span·class="o">></span><span·class="w"> | 711 | </span><span·class="o"><</span><span·class="n">LogicalIds</span><span·class="o">></span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">L</span><span·class="o"><</span><span·class="n">IdList</span><span·class="o">></span><span·class="w"> |
| 712 | </span><span·class="o"><</span><span·class="n">ThreadIds</span><span·class="o">></span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">T</span><span·class="o"><</span><span·class="n">IdList</span><span·class="o">></span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">t</span><span·class="o"><</span><span·class="n">IdList</span><span·class="o">></span><span·class="w"> | 712 | </span><span·class="o"><</span><span·class="n">ThreadIds</span><span·class="o">></span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">T</span><span·class="o"><</span><span·class="n">IdList</span><span·class="o">></span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">t</span><span·class="o"><</span><span·class="n">IdList</span><span·class="o">></span><span·class="w"> |
| 713 | </span><span·class="o"><</span><span·class="n">CoreIds</span><span·class="o">></span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">C</span><span·class="o"><</span><span·class="n">IdList</span><span·class="o">></span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">c</span><span·class="o"><</span><span·class="n">IdList</span><span·class="o">></span><span·class="w"> | 713 | </span><span·class="o"><</span><span·class="n">CoreIds</span><span·class="o">></span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">C</span><span·class="o"><</span><span·class="n">IdList</span><span·class="o">></span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">c</span><span·class="o"><</span><span·class="n">IdList</span><span·class="o">></span><span·class="w"> |
| 714 | </span><span·class="o"><</span><span·class="n">ProcessorIds</span><span·class="o">></span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">P</span><span·class="o"><</span><span·class="n">IdList</span><span·class="o">></span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">p</span><span·class="o"><</span><span·class="n">IdList</span><span·class="o">></span><span·class="w"> | 714 | </span><span·class="o"><</span><span·class="n">ProcessorIds</span><span·class="o">></span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">P</span><span·class="o"><</span><span·class="n">IdList</span><span·class="o">></span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">p</span><span·class="o"><</span><span·class="n">IdList</span><span·class="o">></span><span·class="w"> |
| Offset 733, 30 lines modified | Offset 733, 30 lines modified | ||
| 733 | node.</li><li><code·class="inline"><LogicalIds><ThreadIds><CoreIds><NodeIds><ProcessorIds></code>,·that·is,·thread | 733 | node.</li><li><code·class="inline"><LogicalIds><ThreadIds><CoreIds><NodeIds><ProcessorIds></code>,·that·is,·thread |
| 734 | is·part·of·a·core·that·is·part·of·a·NUMA·node,·which·is·part·of·a | 734 | is·part·of·a·core·that·is·part·of·a·NUMA·node,·which·is·part·of·a |
| 735 | processor.</li></ul><p>A·CPU·topology·can·consist·of·both·processor·external,·and·processor | 735 | processor.</li></ul><p>A·CPU·topology·can·consist·of·both·processor·external,·and·processor |
| 736 | internal·NUMA·nodes·as·long·as·each·logical·processor·belongs·to·only·one | 736 | internal·NUMA·nodes·as·long·as·each·logical·processor·belongs·to·only·one |
| 737 | NUMA·node.·If·<code·class="inline"><ProcessorIds></code>·is·omitted,·its·default·position·is·before | 737 | NUMA·node.·If·<code·class="inline"><ProcessorIds></code>·is·omitted,·its·default·position·is·before |
| 738 | <code·class="inline"><NodeIds></code>.·That·is,·the·default·is·processor·external·NUMA·nodes.</p><p>If·a·list·of·identifiers·is·used·in·an·<code·class="inline"><IdDefs></code>:</p><ul><li><code·class="inline"><LogicalIds></code>·must·be·a·list·of·identifiers.</li><li>At·least·one·other·identifier·type·besides·<code·class="inline"><LogicalIds></code>·must·also·have·a | 738 | <code·class="inline"><NodeIds></code>.·That·is,·the·default·is·processor·external·NUMA·nodes.</p><p>If·a·list·of·identifiers·is·used·in·an·<code·class="inline"><IdDefs></code>:</p><ul><li><code·class="inline"><LogicalIds></code>·must·be·a·list·of·identifiers.</li><li>At·least·one·other·identifier·type·besides·<code·class="inline"><LogicalIds></code>·must·also·have·a |
| 739 | list·of·identifiers.</li><li>All·lists·of·identifiers·must·produce·the·same·number·of·identifiers.</li></ul><p>A·simple·example.·A·single·quad·core·processor·can·be·described·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl·+sct·L0-3c0-3</span><span·class="gp·unselectable"> | 739 | list·of·identifiers.</li><li>All·lists·of·identifiers·must·produce·the·same·number·of·identifiers.</li></ul><p>A·simple·example.·A·single·quad·core·processor·can·be·described·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl·+sct·L0-3c0-3</span><span·class="gp·unselectable"> |
| 740 | 1>·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">system_info</span><span·class="p"·data-group-id=" | 740 | 1>·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">system_info</span><span·class="p"·data-group-id="3370303521-1">(</span><span·class="ss">cpu_topology</span><span·class="p"·data-group-id="3370303521-1">)</span><span·class="p">.</span><span·class="w"> |
| 741 | </span><span·class="p"·data-group-id=" | 741 | </span><span·class="p"·data-group-id="3370303521-2">[</span><span·class="p"·data-group-id="3370303521-3">{</span><span·class="ss">processor</span><span·class="p">,</span><span·class="p"·data-group-id="3370303521-4">[</span><span·class="p"·data-group-id="3370303521-5">{</span><span·class="ss">c[·...·truncated·by·diffoscope;·len:·261,·SHA:·55ab6244d70238d9870b2f99e6420489dd7053670bf0751154a06a939e989fa3·...·]-5">}</span><span·class="p">,</span><span·class="w"> |
| 742 | ·············</span><span·class="p"·data-group-id=" | 742 | ·············</span><span·class="p"·data-group-id="3370303521-7">{</span><span·class="ss">core</span><span·class="p">,</span><span·class="p"·data-group-id="3370303521-8">{</span><span·class="ss">logical</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="3370303521-8">}</s[·...·truncated·by·diffoscope;·len:·45,·SHA:·54a2de408149464e2a4bc0a5246650a6a2ed271f4d685e44901599083cba1803·...·]-7">}</span><span·class="p">,</span><span·class="w"> |
| 743 | ·············</span><span·class="p"·data-group-id=" | 743 | ·············</span><span·class="p"·data-group-id="3370303521-9">{</span><span·class="ss">core</span><span·class="p">,</span><span·class="p"·data-group-id="3370303521-10">{</span><span·class="ss">logical</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="3370303521-10">}<[·...·truncated·by·diffoscope;·len:·47,·SHA:·4f67dec2d0fb39fe8de0b632e88540ada2cd43691ba9687b324b4114ab89d507·...·]-9">}</span><span·class="p">,</span><span·class="w"> |
| 744 | ·············</span><span·class="p"·data-group-id=" | 744 | ·············</span><span·class="p"·data-group-id="3370303521-11">{</span><span·class="ss">core</span><span·class="p">,</span><span·class="p"·data-group-id="3370303521-12">{</span><span·class="ss">logical</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="3370303521-12">}[·...·truncated·by·diffoscope;·len:·208,·SHA:·abb5e6f288c77c89d2dc066929bbddfac85a98136aeaed4ee0e6e14ba94b2250·...·]-2">]</span></code></pre><p>A·more·complicated·example·with·two·quad·core·processors,·each·processor·in |
| 745 | its·own·NUMA·node.·The·ordering·of·logical·processors·is·a·bit·weird.·This | 745 | its·own·NUMA·node.·The·ordering·of·logical·processors·is·a·bit·weird.·This |
| 746 | to·give·a·better·example·of·identifier·lists:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl·+sct·L0-1,3-2c0-3p0N0:L7,4,6-5c0-3p1N1</span><span·class="gp·unselectable"> | 746 | to·give·a·better·example·of·identifier·lists:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl·+sct·L0-1,3-2c0-3p0N0:L7,4,6-5c0-3p1N1</span><span·class="gp·unselectable"> |
| 747 | 1>·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">system_info</span><span·class="p"·data-group-id=" | 747 | 1>·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">system_info</span><span·class="p"·data-group-id="8716205349-1">(</span><span·class="ss">cpu_topology</span><span·class="p"·data-group-id="8716205349-1">)</span><span·class="p">.</span><span·class="w"> |
| 748 | </span><span·class="p"·data-group-id=" | 748 | </span><span·class="p"·data-group-id="8716205349-2">[</span><span·class="p"·data-group-id="8716205349-3">{</span><span·class="nb">node</span><span·class="p">,</span><span·class="p"·data-group-id="8716205349-4">[</span><span·class="p"·data-group-id="8716205349-5">{</span><span·class="ss">proces[·...·truncated·by·diffoscope;·len:·419,·SHA:·a3f726bd6c08a7a734ed4b05e75e76395d66f588332e76e6e1b28c41e22588e9·...·]-7">}</span><span·class="p">,</span><span·class="w"> |
| 749 | ····················</span><span·class="p"·data-group-id=" | 749 | ····················</span><span·class="p"·data-group-id="8716205349-9">{</span><span·class="ss">core</span><span·class="p">,</span><span·class="p"·data-group-id="8716205349-10">{</span><span·class="ss">logical</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="8716205349-10">}<[·...·truncated·by·diffoscope;·len:·47,·SHA:·cd5b318a8c9cd99fbba815f1335d82510d67368ca2a264203c360ebec6cbc40a·...·]-9">}</span><span·class="p">,</span><span·class="w"> |
| 750 | ····················</span><span·class="p"·data-group-id=" | 750 | ····················</span><span·class="p"·data-group-id="8716205349-11">{</span><span·class="ss">core</span><span·class="p">,</span><span·class="p"·data-group-id="8716205349-12">{</span><span·class="ss">logical</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="8716205349-12">}[·...·truncated·by·diffoscope;·len:·48,·SHA:·f84c8dc56685518f6156c264b3e7fd90cd5a8efbc5c45dc9a41766ed671c2cc4·...·]-11">}</span><span·class="p">,</span><span·class="w"> |
| 751 | ····················</span><span·class="p"·data-group-id=" | 751 | ····················</span><span·class="p"·data-group-id="8716205349-13">{</span><span·class="ss">core</span><span·class="p">,</span><span·class="p"·data-group-id="8716205349-14">{</span><span·class="ss">logical</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="8716205349-14">}[·...·truncated·by·diffoscope;·len:·261,·SHA:·e9ce707449171a5cc71b84c369a42940de1f3f434a9c3dff1bfb2c774a8cad54·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 752 | ·</span><span·class="p"·data-group-id=" | 752 | ·</span><span·class="p"·data-group-id="8716205349-15">{</span><span·class="nb">node</span><span·class="p">,</span><span·class="p"·data-group-id="8716205349-16">[</span><span·class="p"·data-group-id="8716205349-17">{</span><span·class="ss">processor</span><span·class="p">,</span><span·class="p"·[·...·truncated·by·diffoscope;·len:·373,·SHA:·c3b76c2a848585a583f4b97913fbd9e7ab61657e51ac3d4801a62801e4be7392·...·]-19">}</span><span·class="p">,</span><span·class="w"> |
| 753 | ····················</span><span·class="p"·data-group-id=" | 753 | ····················</span><span·class="p"·data-group-id="8716205349-21">{</span><span·class="ss">core</span><span·class="p">,</span><span·class="p"·data-group-id="8716205349-22">{</span><span·class="ss">logical</span><span·class="p">,</span><span·class="mi">4</span><span·class="p"·data-group-id="8716205349-22">}[·...·truncated·by·diffoscope;·len:·48,·SHA:·f84c8dc56685518f6156c264b3e7fd90cd5a8efbc5c45dc9a41766ed671c2cc4·...·]-21">}</span><span·class="p">,</span><span·class="w"> |
| 754 | ····················</span><span·class="p"·data-group-id=" | 754 | ····················</span><span·class="p"·data-group-id="8716205349-23">{</span><span·class="ss">core</span><span·class="p">,</span><span·class="p"·data-group-id="8716205349-24">{</span><span·class="ss">logical</span><span·class="p">,</span><span·class="mi">6</span><span·class="p"·data-group-id="8716205349-24">}[·...·truncated·by·diffoscope;·len:·48,·SHA:·f84c8dc56685518f6156c264b3e7fd90cd5a8efbc5c45dc9a41766ed671c2cc4·...·]-23">}</span><span·class="p">,</span><span·class="w"> |
| 755 | ····················</span><span·class="p"·data-group-id=" | 755 | ····················</span><span·class="p"·data-group-id="8716205349-25">{</span><span·class="ss">core</span><span·class="p">,</span><span·class="p"·data-group-id="8716205349-26">{</span><span·class="ss">logical</span><span·class="p">,</span><span·class="mi">5</span><span·class="p"·data-group-id="8716205349-26">}[·...·truncated·by·diffoscope;·len:·318,·SHA:·ab63cc1efc588fd2df93dcef73360f28df130294092af85b370bac6339425c39·...·]-2">]</span></code></pre><p>As·long·as·real·identifiers·are·correct,·it·is·OK·to·pass·a·CPU·topology |
| 756 | that·is·not·a·correct·description·of·the·CPU·topology.·When·used·with·care | 756 | that·is·not·a·correct·description·of·the·CPU·topology.·When·used·with·care |
| 757 | this·can·be·very·useful.·This·to·trick·the·emulator·to·bind·its·schedulers | 757 | this·can·be·very·useful.·This·to·trick·the·emulator·to·bind·its·schedulers |
| 758 | as·you·want.·For·example,·if·you·want·to·run·multiple·Erlang·runtime·systems | 758 | as·you·want.·For·example,·if·you·want·to·run·multiple·Erlang·runtime·systems |
| 759 | on·the·same·machine,·you·want·to·reduce·the·number·of·schedulers·used·and | 759 | on·the·same·machine,·you·want·to·reduce·the·number·of·schedulers·used·and |
| 760 | manipulate·the·CPU·topology·so·that·they·bind·to·different·logical·CPUs.·An | 760 | manipulate·the·CPU·topology·so·that·they·bind·to·different·logical·CPUs.·An |
| 761 | example,·with·two·Erlang·runtime·systems·on·a·quad·core·machine:</p><pre><code·class="text">%·erl·+sct·L0-3c0-3·+sbt·db·+S3:2·-detached·-noinput·-noshell·-sname·one | 761 | example,·with·two·Erlang·runtime·systems·on·a·quad·core·machine:</p><pre><code·class="text">%·erl·+sct·L0-3c0-3·+sbt·db·+S3:2·-detached·-noinput·-noshell·-sname·one |
| 762 | %·erl·+sct·L3-0c0-3·+sbt·db·+S3:2·-detached·-noinput·-noshell·-sname·two</code></pre><p>In·this·example,·each·runtime·system·have·two·schedulers·each·online,·and | 762 | %·erl·+sct·L3-0c0-3·+sbt·db·+S3:2·-detached·-noinput·-noshell·-sname·two</code></pre><p>In·this·example,·each·runtime·system·have·two·schedulers·each·online,·and |
| Offset 923, 18 lines modified | Offset 923, 18 lines modified | ||
| 923 | </h2> | 923 | </h2> |
| 924 | <p>The·standard·Erlang/OTP·system·can·be·reconfigured·to·change·the·default | 924 | <p>The·standard·Erlang/OTP·system·can·be·reconfigured·to·change·the·default |
| 925 | behavior·on·startup.</p><ul><li><p><strong>The·<code·class="inline">.erlang</code>·startup·file</strong>·-·When·Erlang/OTP·is·started,·the·system | 925 | behavior·on·startup.</p><ul><li><p><strong>The·<code·class="inline">.erlang</code>·startup·file</strong>·-·When·Erlang/OTP·is·started,·the·system |
| 926 | searches·for·a·file·named·<code·class="inline">.erlang</code>·in·the | 926 | searches·for·a·file·named·<code·class="inline">.erlang</code>·in·the |
| 927 | <a·href="init.html#home">user's·home·directory</a>·and·then | 927 | <a·href="init.html#home">user's·home·directory</a>·and·then |
| 928 | <a·href="../../../lib/stdlib-6.2.1/doc/html/filename.html#user_config"><code·class="inline">filename:basedir(user_config,·"erlang")</code></a>.</p><p>If·an·<code·class="inline">.erlang</code>·file·is·found,·it·is·assumed·to·contain·valid·Erlang | 928 | <a·href="../../../lib/stdlib-6.2.1/doc/html/filename.html#user_config"><code·class="inline">filename:basedir(user_config,·"erlang")</code></a>.</p><p>If·an·<code·class="inline">.erlang</code>·file·is·found,·it·is·assumed·to·contain·valid·Erlang |
| 929 | expressions.·These·expressions·are·evaluated·as·if·they·were·input·to·the | 929 | expressions.·These·expressions·are·evaluated·as·if·they·were·input·to·the |
| 930 | shell.</p><p>A·typical·<code·class="inline">.erlang</code>·file·contains·a·set·of·search·paths,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 930 | shell.</p><p>A·typical·<code·class="inline">.erlang</code>·file·contains·a·set·of·search·paths,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="0438512176-1">(</span><span·class="s">"executing·user·profile·in·$HOME/.erlang\n"</span><span·class="p">,</span><span·class="p"·data-group-id="0438512176-2">[</span><span·class="p"·data-group-id="0438512176-2">]</span><span·class="p"·data-group-i[·...·truncated·by·diffoscope;·len:·13,·SHA:·1b9fe540678563ecebcaa049ca20ae7a0016b7c9c0f552b0c60f49edc42b59aa·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 931 | </span><span·class="nc">code</span><span·class="p">:</span><span·class="nf">add_path</span><span·class="p"·data-group-id=" | 931 | </span><span·class="nc">code</span><span·class="p">:</span><span·class="nf">add_path</span><span·class="p"·data-group-id="0438512176-3">(</span><span·class="s">"/home/calvin/test/ebin"</span><span·class="p"·data-group-id="0438512176-3">)</span><span·class="p">.</span><span·class="w"> |
| 932 | </span><span·class="nc">code</span><span·class="p">:</span><span·class="nf">add_path</span><span·class="p"·data-group-id=" | 932 | </span><span·class="nc">code</span><span·class="p">:</span><span·class="nf">add_path</span><span·class="p"·data-group-id="0438512176-4">(</span><span·class="s">"/home/hobbes/bigappl-1.2/ebin"</span><span·class="p"·data-group-id="0438512176-4">)</span><span·class="p">.</span><span·class="w"> |
| 933 | </span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 933 | </span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="0438512176-5">(</span><span·class="s">".erlang·rc·finished\n"</span><span·class="p">,</span><span·class="p"·data-group-id="0438512176-6">[</span><span·class="p"·data-group-id="0438512176-6">]</span><span·class="p"·data-group-id="0438512176-5">)</span><span·class="p">.</span></code></pre></li><li><p><strong>user_default</strong>·and·<strong>shell_default</strong>·-·Functions·in·the·shell·that·are·not |
| 934 | prefixed·by·a·module·name·are·assumed·to·be·functional·objects·(funs), | 934 | prefixed·by·a·module·name·are·assumed·to·be·functional·objects·(funs), |
| 935 | built-in·functions·(BIFs),·or·belong·to·the·module·<code·class="inline">user_default</code>·or | 935 | built-in·functions·(BIFs),·or·belong·to·the·module·<code·class="inline">user_default</code>·or |
| 936 | <code·class="inline">shell_default</code>.</p><p>To·include·private·shell·commands,·define·them·in·a·module·<code·class="inline">user_default</code>·and | 936 | <code·class="inline">shell_default</code>.</p><p>To·include·private·shell·commands,·define·them·in·a·module·<code·class="inline">user_default</code>·and |
| 937 | add·the·following·argument·as·the·first·line·in·the·<code·class="inline">.erlang</code>·file:</p><pre><code·class="text">code:load_abs("..../user_default").</code></pre></li><li><p><strong>erl</strong>·-·If·the·contents·of·<code·class="inline">.erlang</code>·are·changed·and·a·private·version·of | 937 | add·the·following·argument·as·the·first·line·in·the·<code·class="inline">.erlang</code>·file:</p><pre><code·class="text">code:load_abs("..../user_default").</code></pre></li><li><p><strong>erl</strong>·-·If·the·contents·of·<code·class="inline">.erlang</code>·are·changed·and·a·private·version·of |
| 938 | <code·class="inline">user_default</code>·is·defined,·the·Erlang/OTP·environment·can·be·customized.·More | 938 | <code·class="inline">user_default</code>·is·defined,·the·Erlang/OTP·environment·can·be·customized.·More |
| 939 | powerful·changes·can·be·made·by·supplying·command-line·arguments·in·the | 939 | powerful·changes·can·be·made·by·supplying·command-line·arguments·in·the |
| 940 | startup·script·<code·class="inline">erl</code>.·For·more·information,·see·<a·href="init.html"><code·class="inline">init</code></a>.</p></li></ul><h2·id="see-also"·class="section-heading"> | 940 | startup·script·<code·class="inline">erl</code>.·For·more·information,·see·<a·href="init.html"><code·class="inline">init</code></a>.</p></li></ul><h2·id="see-also"·class="section-heading"> |
| Offset 252, 32 lines modified | Offset 252, 32 lines modified | ||
| 252 | --- | 252 | --- |
| 253 | sequenceDiagram | 253 | sequenceDiagram |
| 254 | ····participant·client·as·Client·(or·Node) | 254 | ····participant·client·as·Client·(or·Node) |
| 255 | ····participant·EPMD | 255 | ····participant·EPMD |
| 256 | ···· | 256 | ···· |
| 257 | ····client·->>·EPMD:·NAMES_REQ | 257 | ····client·->>·EPMD:·NAMES_REQ |
| 258 | ····EPMD·-->>·client:·NAMES_RESP</code></pre><table><thead><tr><th·style="text-align:·left;">1</th></tr></thead><tbody><tr><td·style="text-align:·left;"><code·class="inline">110</code></td></tr></tbody></table><p><em>Table:·NAMES_REQ·(110)</em></p><p>The·response·for·a·<code·class="inline">NAMES_REQ</code>·is·as·follows:</p><table><thead><tr><th·style="text-align:·left;">4</th><th·style="text-align:·left;"></th></tr></thead><tbody><tr><td·style="text-align:·left;"><code·class="inline">EPMDPortNo</code></td><td·style="text-align:·left;"><code·class="inline">NodeInfo*</code></td></tr></tbody></table><p><em>Table:·NAMES_RESP</em></p><p><code·class="inline">NodeInfo</code>·is·a·string·written·for·each·active·node.·When·all·<code·class="inline">NodeInfo</code>·has | 258 | ····EPMD·-->>·client:·NAMES_RESP</code></pre><table><thead><tr><th·style="text-align:·left;">1</th></tr></thead><tbody><tr><td·style="text-align:·left;"><code·class="inline">110</code></td></tr></tbody></table><p><em>Table:·NAMES_REQ·(110)</em></p><p>The·response·for·a·<code·class="inline">NAMES_REQ</code>·is·as·follows:</p><table><thead><tr><th·style="text-align:·left;">4</th><th·style="text-align:·left;"></th></tr></thead><tbody><tr><td·style="text-align:·left;"><code·class="inline">EPMDPortNo</code></td><td·style="text-align:·left;"><code·class="inline">NodeInfo*</code></td></tr></tbody></table><p><em>Table:·NAMES_RESP</em></p><p><code·class="inline">NodeInfo</code>·is·a·string·written·for·each·active·node.·When·all·<code·class="inline">NodeInfo</code>·has |
| 259 | been·written·the·connection·is·closed·by·the·EPMD.</p><p><code·class="inline">NodeInfo</code>·is,·as·expressed·in·Erlang:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 259 | been·written·the·connection·is·closed·by·the·EPMD.</p><p><code·class="inline">NodeInfo</code>·is,·as·expressed·in·Erlang:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="5514488304-1">(</span><span·class="s">"name·~ts·at·port·</span><span·class="si">~p</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5514488304-2">[</span><span·[·...·truncated·by·diffoscope;·len:·194,·SHA:·dab4c757f7877615a93abea4b2d9de02253969394d8bd8dcb6aed689a1c1dec2·...·]-1">)</span><span·class="p">.</span></code></pre><h3·id="dump-all-data-from-epmd"·class="section-heading"> |
| 260 | ··<a·href="#dump-all-data-from-epmd"·class="hover-link"> | 260 | ··<a·href="#dump-all-data-from-epmd"·class="hover-link"> |
| 261 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 261 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 262 | ··</a> | 262 | ··</a> |
| 263 | ··<span·class="text">Dump·All·Data·from·EPMD</span> | 263 | ··<span·class="text">Dump·All·Data·from·EPMD</span> |
| 264 | </h3> | 264 | </h3> |
| 265 | <p>This·request·is·not·really·used,·it·is·to·be·regarded·as·a·debug·feature.</p><pre><code·class="mermaid">--- | 265 | <p>This·request·is·not·really·used,·it·is·to·be·regarded·as·a·debug·feature.</p><pre><code·class="mermaid">--- |
| 266 | title:·Dump·All·Data·from·EPMD | 266 | title:·Dump·All·Data·from·EPMD |
| 267 | --- | 267 | --- |
| 268 | sequenceDiagram | 268 | sequenceDiagram |
| 269 | ····participant·client·as·Client·(or·Node) | 269 | ····participant·client·as·Client·(or·Node) |
| 270 | ····participant·EPMD | 270 | ····participant·EPMD |
| 271 | ···· | 271 | ···· |
| 272 | ····client·->>·EPMD:·DUMP_REQ | 272 | ····client·->>·EPMD:·DUMP_REQ |
| 273 | ····EPMD·-->>·client:·DUMP_RESP</code></pre><table><thead><tr><th·style="text-align:·left;">1</th></tr></thead><tbody><tr><td·style="text-align:·left;"><code·class="inline">100</code></td></tr></tbody></table><p><em>Table:·DUMP_REQ</em></p><p>The·response·for·a·<code·class="inline">DUMP_REQ</code>·is·as·follows:</p><table><thead><tr><th·style="text-align:·left;">4</th><th·style="text-align:·left;"></th></tr></thead><tbody><tr><td·style="text-align:·left;"><code·class="inline">EPMDPortNo</code></td><td·style="text-align:·left;"><code·class="inline">NodeInfo*</code></td></tr></tbody></table><p><em>Table:·DUMP_RESP</em></p><p><code·class="inline">NodeInfo</code>·is·a·string·written·for·each·node·kept·in·the·EPMD.·When·all | 273 | ····EPMD·-->>·client:·DUMP_RESP</code></pre><table><thead><tr><th·style="text-align:·left;">1</th></tr></thead><tbody><tr><td·style="text-align:·left;"><code·class="inline">100</code></td></tr></tbody></table><p><em>Table:·DUMP_REQ</em></p><p>The·response·for·a·<code·class="inline">DUMP_REQ</code>·is·as·follows:</p><table><thead><tr><th·style="text-align:·left;">4</th><th·style="text-align:·left;"></th></tr></thead><tbody><tr><td·style="text-align:·left;"><code·class="inline">EPMDPortNo</code></td><td·style="text-align:·left;"><code·class="inline">NodeInfo*</code></td></tr></tbody></table><p><em>Table:·DUMP_RESP</em></p><p><code·class="inline">NodeInfo</code>·is·a·string·written·for·each·node·kept·in·the·EPMD.·When·all |
| 274 | <code·class="inline">NodeInfo</code>·has·been·written·the·connection·is·closed·by·the·EPMD.</p><p><code·class="inline">NodeInfo</code>·is,·as·expressed·in·Erlang:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 274 | <code·class="inline">NodeInfo</code>·has·been·written·the·connection·is·closed·by·the·EPMD.</p><p><code·class="inline">NodeInfo</code>·is,·as·expressed·in·Erlang:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="8400377824-1">(</span><span·class="s">"active·name·····~ts·at·port·</span><span·class="si">~p</span><span·class="s">,·fd·=·</span><span·class="si">~p</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w"> |
| 275 | ··········</span><span·class="p"·data-group-id=" | 275 | ··········</span><span·class="p"·data-group-id="8400377824-2">[</span><span·class="n">NodeName</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Fd</span><span·class="p"·data-group-id="8400377824-2">]</span><s[·...·truncated·by·diffoscope;·len:·266,·SHA:·2e14f9c2dd3906489876a528273928c03e62e44470ca9a2c91f347ec16efa299·...·]-1">(</span><span·class="s">"old/unused·name·~ts·at·port·</span><span·class="si">~p</span><span·class="s">,·fd·=·</span><span·class="si">~p</span><span·class="s">·</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w"> |
| 276 | ··········</span><span·class="p"·data-group-id="8 | 276 | ··········</span><span·class="p"·data-group-id="9898320184-2">[</span><span·class="n">NodeName</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Fd</span><span·class="p"·data-group-id="9898320184-2">]</span><s[·...·truncated·by·diffoscope;·len:·39,·SHA:·c52cb9c8c83890eb15028873054824a2ad3e17c3c4d45fae377f6e665741d8cb·...·]-1">)</span><span·class="p">.</span></code></pre><h3·id="kill-epmd"·class="section-heading"> |
| 277 | ··<a·href="#kill-epmd"·class="hover-link"> | 277 | ··<a·href="#kill-epmd"·class="hover-link"> |
| 278 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 278 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 279 | ··</a> | 279 | ··</a> |
| 280 | ··<span·class="text">Kill·EPMD</span> | 280 | ··<span·class="text">Kill·EPMD</span> |
| 281 | </h3> | 281 | </h3> |
| 282 | <p>This·request·kills·the·running·EPMD.·It·is·almost·never·used.</p><pre><code·class="mermaid">--- | 282 | <p>This·request·kills·the·running·EPMD.·It·is·almost·never·used.</p><pre><code·class="mermaid">--- |
| 283 | title:·Kill·EPMD | 283 | title:·Kill·EPMD |
| Offset 407, 54 lines modified | Offset 407, 54 lines modified | ||
| 407 | received·from·<code·class="inline">A</code>·is·correct·and·generates·a·digest·from·the·challenge | 407 | received·from·<code·class="inline">A</code>·is·correct·and·generates·a·digest·from·the·challenge |
| 408 | received·from·<code·class="inline">A</code>.·The·digest·is·then·sent·to·<code·class="inline">A</code>.·The·message·is·as·follows:</p><table><thead><tr><th·style="text-align:·left;">1</th><th·style="text-align:·left;">16</th></tr></thead><tbody><tr><td·style="text-align:·left;"><code·class="inline">'a'</code></td><td·style="text-align:·left;"><code·class="inline">Digest</code></td></tr></tbody></table><p><em>Table:·The·challenge_ack·message</em></p><p><code·class="inline">Digest</code>·is·the·digest·calculated·by·<code·class="inline">B</code>·for·<code·class="inline">A</code>'s·challenge.</p></li><li><p><strong>7)·check</strong>·-·<code·class="inline">A</code>·checks·the·digest·from·<code·class="inline">B</code>·and·the·connection·is·up.</p></li></ul><h3·id="semigraphic-view"·class="section-heading"> | 408 | received·from·<code·class="inline">A</code>.·The·digest·is·then·sent·to·<code·class="inline">A</code>.·The·message·is·as·follows:</p><table><thead><tr><th·style="text-align:·left;">1</th><th·style="text-align:·left;">16</th></tr></thead><tbody><tr><td·style="text-align:·left;"><code·class="inline">'a'</code></td><td·style="text-align:·left;"><code·class="inline">Digest</code></td></tr></tbody></table><p><em>Table:·The·challenge_ack·message</em></p><p><code·class="inline">Digest</code>·is·the·digest·calculated·by·<code·class="inline">B</code>·for·<code·class="inline">A</code>'s·challenge.</p></li><li><p><strong>7)·check</strong>·-·<code·class="inline">A</code>·checks·the·digest·from·<code·class="inline">B</code>·and·the·connection·is·up.</p></li></ul><h3·id="semigraphic-view"·class="section-heading"> |
| 409 | ··<a·href="#semigraphic-view"·class="hover-link"> | 409 | ··<a·href="#semigraphic-view"·class="hover-link"> |
| 410 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 410 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 411 | ··</a> | 411 | ··</a> |
| 412 | ··<span·class="text">Semigraphic·View</span> | 412 | ··<span·class="text">Semigraphic·View</span> |
| 413 | </h3> | 413 | </h3> |
| 414 | <pre><code·class="makeup·erlang"·translate="no"><span·class="n">A</span><span·class="w">·</span><span·class="p"·data-group-id=" | 414 | <pre><code·class="makeup·erlang"·translate="no"><span·class="n">A</span><span·class="w">·</span><span·class="p"·data-group-id="4563757949-1">(</span><span·class="ss">initiator</span><span·class="p"·data-group-id="4563757949-1">)</span><span·class="w">······································</span><span·class="n">B</span><span·class="w">·</span><span·class="p"·data-group-id="45637579[·...·truncated·by·diffoscope;·len:·87,·SHA:·157b3a17f2932c455e07eb2cee6cf5a85b3408bfaabc3ebeed221f8c7f51771e·...·]-2">)</span><span·class="w"> |
| 415 | </span><span·class="n">TCP</span><span·class="w">·</span><span·class="ss">connect</span><span·class="w">·</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">></span><span·class="w"> | 415 | </span><span·class="n">TCP</span><span·class="w">·</span><span·class="ss">connect</span><span·class="w">·</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">></span><span·class="w"> |
| 416 | ···················································</span><span·class="n">TCP</span><span·class="w">·</span><span·class="ss">accept</span><span·class="w"> | 416 | ···················································</span><span·class="n">TCP</span><span·class="w">·</span><span·class="ss">accept</span><span·class="w"> |
| 417 | </span><span·class="ss">send_name</span><span·class="w">·</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">></span><span·class="w"> | 417 | </span><span·class="ss">send_name</span><span·class="w">·</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">></span><span·class="w"> |
| 418 | ···················································</span><span·class="ss">recv_name</span><span·class="w"> | 418 | ···················································</span><span·class="ss">recv_name</span><span·class="w"> |
| 419 | ··</span><span·class="o"><-</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">-</span><span·class="w">·</span><span·class="ss">send_status</span><span·class="w"> | 419 | ··</span><span·class="o"><-</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">-</span><span·class="w">·</span><span·class="ss">send_status</span><span·class="w"> |
| 420 | </span><span·class="nf">recv_status</span><span·class="w"> | 420 | </span><span·class="nf">recv_status</span><span·class="w"> |
| 421 | </span><span·class="p"·data-group-id=" | 421 | </span><span·class="p"·data-group-id="4563757949-3">(</span><span·class="k">if</span><span·class="w">·</span><span·class="ss">status</span><span·class="w">·</span><span·class="ss">was</span><span·class="w">·</span><span·class="ss">'alive'</span><span·class="w"> |
| 422 | ·</span><span·class="ss">send_status</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 422 | ·</span><span·class="ss">send_status</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 423 | ···················································</span><span·class="ss">recv_status</span><span·class="p"·data-group-id=" | 423 | ···················································</span><span·class="ss">recv_status</span><span·class="p"·data-group-id="4563757949-3">)</span><span·class="w"> |
| 424 | ··························</span><span·class="p"·data-group-id=" | 424 | ··························</span><span·class="p"·data-group-id="4563757949-4">(</span><span·class="n">ChB</span><span·class="p"·data-group-id="4563757949-4">)</span><span·class="w">······················</span><span·class="n">ChB</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class=[·...·truncated·by·diffoscope;·len:·119,·SHA:·eeac0c98ef2b57bb2dc82e894432b15c80273d20e85012edc9ae1f96848444b7·...·]-5">)</span><span·class="w"> |
| 425 | ··</span><span·class="o"><-</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">-</span><span·class="w">·</span><span·class="ss">send_challenge</span><span·class="w"> | 425 | ··</span><span·class="o"><-</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">-</span><span·class="w">·</span><span·class="ss">send_challenge</span><span·class="w"> |
| 426 | </span><span·class="nf">recv_challenge</span><span·class="w"> | 426 | </span><span·class="nf">recv_challenge</span><span·class="w"> |
| 427 | </span><span·class="p"·data-group-id=" | 427 | </span><span·class="p"·data-group-id="4563757949-6">(</span><span·class="k">if</span><span·class="w">·</span><span·class="ss">old</span><span·class="w">·</span><span·class="ss">send_name</span><span·class="w"> |
| 428 | ·</span><span·class="ss">send_complement</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 428 | ·</span><span·class="ss">send_complement</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 429 | ···················································</span><span·class="ss">recv_complement</span><span·class="p"·data-group-id=" | 429 | ···················································</span><span·class="ss">recv_complement</span><span·class="p"·data-group-id="4563757949-6">)</span><span·class="w"> |
| 430 | </span><span·class="n">ChA</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">gen_challenge</span><span·class="p"·data-group-id=" | 430 | </span><span·class="n">ChA</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">gen_challenge</span><span·class="p"·data-group-id="4563757949-7">(</span><span·class="p"·data-group-id="4563757949-7">)</span><span·class="p">,</span><span·class="w"> |
| 431 | </span><span·class="n">OCA</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">out_cookie</span><span·class="p"·data-group-id=" | 431 | </span><span·class="n">OCA</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">out_cookie</span><span·class="p"·data-group-id="4563757949-8">(</span><span·class="n">B</span><span·class="p"·data-group-id="4563757949-8">)</span><span·class="p">,</span><span·class="w"> |
| 432 | </span><span·class="n">DiA</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">gen_digest</span><span·class="p"·data-group-id=" | 432 | </span><span·class="n">DiA</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">gen_digest</span><span·class="p"·data-group-id="4563757949-9">(</span><span·class="n">ChB</span><span·class="p">,</span><span·class="w">·</span><span·class="n">OCA</span><span·class="p"·data-group-id="4563757949-9">)</span><span·class="w"> |
| 433 | ··························</span><span·class="p"·data-group-id=" | 433 | ··························</span><span·class="p"·data-group-id="4563757949-10">(</span><span·class="n">ChA</span><span·class="p">,</span><span·class="w">·</span><span·class="n">DiA</span><span·class="p"·data-group-id="4563757949-10">)</span><span·class="w"> |
| 434 | </span><span·class="ss">send_challenge_reply</span><span·class="w">·</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="p">-></span><span·class="w"> | 434 | </span><span·class="ss">send_challenge_reply</span><span·class="w">·</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="p">-></span><span·class="w"> |
| 435 | ···················································</span><span·class="ss">recv_challenge_reply</span><span·class="w"> | 435 | ···················································</span><span·class="ss">recv_challenge_reply</span><span·class="w"> |
| 436 | ···················································</span><span·class="n">ICB</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">in_cookie</span><span·class="p"·data-group-id=" | 436 | ···················································</span><span·class="n">ICB</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">in_cookie</span><span·class="p"·data-group-id="4563757949-11">(</span><span·class="n">A</span><span·class="p"·data-group-id="4563757949-11">)</span><span·class="p">,</span><span·class="w"> |
| 437 | ···················································</span><span·class="nc">check</span><span·class="p">:</span><span·class="w"> | 437 | ···················································</span><span·class="nc">check</span><span·class="p">:</span><span·class="w"> |
| 438 | ···················································</span><span·class="n">DiA</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="nf">gen_digest</span><span·class="w">·</span><span·class="p"·data-group-id=" | 438 | ···················································</span><span·class="n">DiA</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="nf">gen_digest</span><span·class="w">·</span><span·class="p"·data-group-id="4563757949-12">(</span><span·class="n">ChB</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ICB</span><span·class="p"·data-group-id="4563757949-12">)</span><span·class="o">?</span><span·class="w"> |
| 439 | </span><span·class="w">···················································</span><span·class="p">-</span><span·class="w">·</span><span·class="na">if</span><span·class="w">·</span><span·class="n">OK</span><span·class="p">:</span><span·class="w"> | 439 | </span><span·class="w">···················································</span><span·class="p">-</span><span·class="w">·</span><span·class="na">if</span><span·class="w">·</span><span·class="n">OK</span><span·class="p">:</span><span·class="w"> |
| 440 | ····················································</span><span·class="n">OCB</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">out_cookie</span><span·class="p"·data-group-id=" | 440 | ····················································</span><span·class="n">OCB</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">out_cookie</span><span·class="p"·data-group-id="4563757949-13">(</span><span·class="n">A</span><span·class="p"·data-group-id="4563757949-13">)</span><span·class="p">,</span><span·class="w"> |
| 441 | ····················································</span><span·class="n">DiB</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">gen_digest</span><span·class="w">·</span><span·class="p"·data-group-id=" | 441 | ····················································</span><span·class="n">DiB</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">gen_digest</span><span·class="w">·</span><span·class="p"·data-group-id="4563757949-14">(</span><span·class="n">ChA</span><span·class="p">,</span><span·class="w">·</span><span·class="n">OCB</span><span·class="p"·data-group-id="4563757949-14">)</span><span·class="w"> |
| 442 | ··························</span><span·class="p"·data-group-id=" | 442 | ··························</span><span·class="p"·data-group-id="4563757949-15">(</span><span·class="n">DiB</span><span·class="p"·data-group-id="4563757949-15">)</span><span·class="w"> |
| 443 | ··</span><span·class="o"><-</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="w">·</span><span·class="ss">send_challenge_ack</span><span·class="w"> | 443 | ··</span><span·class="o"><-</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="w">·</span><span·class="ss">send_challenge_ack</span><span·class="w"> |
| 444 | </span><span·class="ss">recv_challenge_ack</span><span·class="w">··································</span><span·class="n">DONE</span><span·class="w"> | 444 | </span><span·class="ss">recv_challenge_ack</span><span·class="w">··································</span><span·class="n">DONE</span><span·class="w"> |
| 445 | </span><span·class="n">ICA</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">in_cookie</span><span·class="p"·data-group-id=" | 445 | </span><span·class="n">ICA</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">in_cookie</span><span·class="p"·data-group-id="4563757949-16">(</span><span·class="n">B</span><span·class="p"·data-group-id="4563757949-16">)</span><span·class="p">,</span><span·class="w">································</span><span·class="o">-</span><span·class="w">·</span><span·class="nc">else</span><span·class="p">:</span><span·class="w"> |
| 446 | </span><span·class="nc">check</span><span·class="p">:</span><span·class="w">··············································</span><span·class="n">CLOSE</span><span·class="w"> | 446 | </span><span·class="nc">check</span><span·class="p">:</span><span·class="w">··············································</span><span·class="n">CLOSE</span><span·class="w"> |
| 447 | </span><span·class="n">DiB</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="nf">gen_digest</span><span·class="p"·data-group-id=" | 447 | </span><span·class="n">DiB</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="nf">gen_digest</span><span·class="p"·data-group-id="4563757949-17">(</span><span·class="n">ChA</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ICA</span><span·class="p"·data-group-id="4563757949-17">)</span><span·class="o">?</span><span·class="w"> |
| 448 | </span><span·class="p">-</span><span·class="w">·</span><span·class="na">if</span><span·class="w">·</span><span·class="n">OK</span><span·class="p">:</span><span·class="w"> | 448 | </span><span·class="p">-</span><span·class="w">·</span><span·class="na">if</span><span·class="w">·</span><span·class="n">OK</span><span·class="p">:</span><span·class="w"> |
| 449 | ·</span><span·class="n">DONE</span><span·class="w"> | 449 | ·</span><span·class="n">DONE</span><span·class="w"> |
| 450 | </span><span·class="p">-</span><span·class="w">·</span><span·class="na">else</span><span·class="p">:</span><span·class="w"> | 450 | </span><span·class="p">-</span><span·class="w">·</span><span·class="na">else</span><span·class="p">:</span><span·class="w"> |
| 451 | ·</span><span·class="n">CLOSE</span></code></pre><p><a·href=""·id="dflags"></a></p><h3·id="distribution-flags"·class="section-heading"> | 451 | ·</span><span·class="n">CLOSE</span></code></pre><p><a·href=""·id="dflags"></a></p><h3·id="distribution-flags"·class="section-heading"> |
| 452 | ··<a·href="#distribution-flags"·class="hover-link"> | 452 | ··<a·href="#distribution-flags"·class="hover-link"> |
| 453 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 453 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 454 | ··</a> | 454 | ··</a> |
| Offset 436, 15 lines modified | Offset 436, 15 lines modified | ||
| 436 | ··</a> | 436 | ··</a> |
| 437 | ··<span·class="text">SMALL_BIG_EXT</span> | 437 | ··<span·class="text">SMALL_BIG_EXT</span> |
| 438 | </h2> | 438 | </h2> |
| 439 | <table><thead><tr><th·style="text-align:·left;">1</th><th·style="text-align:·left;">1</th><th·style="text-align:·left;">1</th><th·style="text-align:·left;">n</th></tr></thead><tbody><tr><td·style="text-align:·left;"><code·class="inline">110</code></td><td·style="text-align:·left;"><code·class="inline">n</code></td><td·style="text-align:·left;"><code·class="inline">Sign</code></td><td·style="text-align:·left;"><code·class="inline">d(0)</code>·...·<code·class="inline">d(n-1)</code></td></tr></tbody></table><p>Bignums·are·stored·in·unary·form·with·a·<code·class="inline">Sign</code>·byte,·that·is,·0·if·the·bignum·is | 439 | <table><thead><tr><th·style="text-align:·left;">1</th><th·style="text-align:·left;">1</th><th·style="text-align:·left;">1</th><th·style="text-align:·left;">n</th></tr></thead><tbody><tr><td·style="text-align:·left;"><code·class="inline">110</code></td><td·style="text-align:·left;"><code·class="inline">n</code></td><td·style="text-align:·left;"><code·class="inline">Sign</code></td><td·style="text-align:·left;"><code·class="inline">d(0)</code>·...·<code·class="inline">d(n-1)</code></td></tr></tbody></table><p>Bignums·are·stored·in·unary·form·with·a·<code·class="inline">Sign</code>·byte,·that·is,·0·if·the·bignum·is |
| 440 | positive·and·1·if·it·is·negative.·The·digits·are·stored·with·the·least | 440 | positive·and·1·if·it·is·negative.·The·digits·are·stored·with·the·least |
| 441 | significant·byte·stored·first.·To·calculate·the·integer,·the·following·formula | 441 | significant·byte·stored·first.·To·calculate·the·integer,·the·following·formula |
| 442 | can·be·used:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">B</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">256</span><span·class="w"> | 442 | can·be·used:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">B</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">256</span><span·class="w"> |
| 443 | </span><span·class="p"·data-group-id="5 | 443 | </span><span·class="p"·data-group-id="5936677362-1">(</span><span·class="ss">d0</span><span·class="o">*</span><span·class="n">B</span><span·class="err">^</span><span·class="mi">0</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="ss">d1</span><span·class=[·...·truncated·by·diffoscope;·len:·951,·SHA:·2efa231134676216aa3f76d745019bafe2a3a25b9b2744f67045d9273f900c0b·...·]-1">)</span></code></pre><h2·id="large_big_ext"·class="section-heading"> |
| 444 | ··<a·href="#large_big_ext"·class="hover-link"> | 444 | ··<a·href="#large_big_ext"·class="hover-link"> |
| 445 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 445 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 446 | ··</a> | 446 | ··</a> |
| 447 | ··<span·class="text">LARGE_BIG_EXT</span> | 447 | ··<span·class="text">LARGE_BIG_EXT</span> |
| 448 | </h2> | 448 | </h2> |
| 449 | <table><thead><tr><th·style="text-align:·left;">1</th><th·style="text-align:·left;">4</th><th·style="text-align:·left;">1</th><th·style="text-align:·left;">n</th></tr></thead><tbody><tr><td·style="text-align:·left;"><code·class="inline">111</code></td><td·style="text-align:·left;"><code·class="inline">n</code></td><td·style="text-align:·left;"><code·class="inline">Sign</code></td><td·style="text-align:·left;"><code·class="inline">d(0)</code>·...·<code·class="inline">d(n-1)</code></td></tr></tbody></table><p>Same·as·<a·href="erl_ext_dist.html#small_big_ext"><code·class="inline">SMALL_BIG_EXT</code></a>·except·that·the·length | 449 | <table><thead><tr><th·style="text-align:·left;">1</th><th·style="text-align:·left;">4</th><th·style="text-align:·left;">1</th><th·style="text-align:·left;">n</th></tr></thead><tbody><tr><td·style="text-align:·left;"><code·class="inline">111</code></td><td·style="text-align:·left;"><code·class="inline">n</code></td><td·style="text-align:·left;"><code·class="inline">Sign</code></td><td·style="text-align:·left;"><code·class="inline">d(0)</code>·...·<code·class="inline">d(n-1)</code></td></tr></tbody></table><p>Same·as·<a·href="erl_ext_dist.html#small_big_ext"><code·class="inline">SMALL_BIG_EXT</code></a>·except·that·the·length |
| 450 | field·is·an·unsigned·4·byte·integer.</p><h2·id="reference_ext-deprecated"·class="section-heading"> | 450 | field·is·an·unsigned·4·byte·integer.</p><h2·id="reference_ext-deprecated"·class="section-heading"> |
| Offset 161, 27 lines modified | Offset 161, 27 lines modified | ||
| 161 | } | 161 | } |
| 162 | static·ErlNifFunc·nif_funcs[]·= | 162 | static·ErlNifFunc·nif_funcs[]·= |
| 163 | { | 163 | { |
| 164 | ····{"hello",·0,·hello} | 164 | ····{"hello",·0,·hello} |
| 165 | }; | 165 | }; |
| 166 | ERL_NIF_INIT(niftest,nif_funcs,NULL,NULL,NULL,NULL)</code></pre><p>The·Erlang·module·can·look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 166 | ERL_NIF_INIT(niftest,nif_funcs,NULL,NULL,NULL,NULL)</code></pre><p>The·Erlang·module·can·look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="5821493935-1">(</span><span·class="ss">niftest</span><span·class="p"·data-group-id="5821493935-1">)</span><span·class="p">.</span><span·class="w"> |
| 167 | </span><span·class="w"> | 167 | </span><span·class="w"> |
| 168 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 168 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="5821493935-2">(</span><span·class="p"·data-group-id="5821493935-3">[</span><span·class="ss">init</span><span·class="p">/</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">hello</span><span·class="p">/</span><sp[·...·truncated·by·diffoscope;·len:·115,·SHA:·8a8f286860f8853bbc353d774198fa066b5d66f053ebdbdec1a5090a2c18c269·...·]5-2">)</span><span·class="p">.</span><span·class="w"> |
| 169 | </span><span·class="w"> | 169 | </span><span·class="w"> |
| 170 | </span><span·class="p">-</span><span·class="na">nifs</span><span·class="p"·data-group-id=" | 170 | </span><span·class="p">-</span><span·class="na">nifs</span><span·class="p"·data-group-id="5821493935-4">(</span><span·class="p"·data-group-id="5821493935-5">[</span><span·class="ss">hello</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data-group-id="5821493935-5">]</span><span·class="p"·data-group-id="5821493935-4">)</span><span·class="p">.</span><span·class="w"> |
| 171 | </span><span·class="w"> | 171 | </span><span·class="w"> |
| 172 | </span><span·class="p">-</span><span·class="na">on_load</span><span·class="p"·data-group-id=" | 172 | </span><span·class="p">-</span><span·class="na">on_load</span><span·class="p"·data-group-id="5821493935-6">(</span><span·class="ss">init</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data-group-id="5821493935-6">)</span><span·class="p">.</span><span·class="w"> |
| 173 | </span><span·class="nf">init</span><span·class="p"·data-group-id=" | 173 | </span><span·class="nf">init</span><span·class="p"·data-group-id="5821493935-7">(</span><span·class="p"·data-group-id="5821493935-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 174 | ······</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">load_nif</span><span·class="p"·data-group-id=" | 174 | ······</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">load_nif</span><span·class="p"·data-group-id="5821493935-8">(</span><span·class="s">"./niftest"</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">0</span><span·class="p"·data-group-id="5821493935-8">)</span><span·class="p">.</span><span·class="w"> |
| 175 | </span><span·class="nf">hello</span><span·class="p"·data-group-id=" | 175 | </span><span·class="nf">hello</span><span·class="p"·data-group-id="5821493935-9">(</span><span·class="p"·data-group-id="5821493935-9">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 176 | ······</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">nif_error</span><span·class="p"·data-group-id=" | 176 | ······</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">nif_error</span><span·class="p"·data-group-id="5821493935-10">(</span><span·class="s">"NIF·library·not·loaded"</span><span·class="p"·data-group-id="5821493935-10">)</span><span·class="p">.</span></code></pre><p>Compile·and·test·can·look·as·follows·(on·Linux):</p><pre><code·class="text">$>·gcc·-fPIC·-shared·-o·niftest.so·niftest.c·-I·$ERL_ROOT/usr/include/ |
| 177 | $>·erl | 177 | $>·erl |
| 178 | 1>·c(niftest). | 178 | 1>·c(niftest). |
| 179 | {ok,niftest} | 179 | {ok,niftest} |
| 180 | 2>·niftest:hello(). | 180 | 2>·niftest:hello(). |
| 181 | "Hello·world!"</code></pre><p>In·the·example·above·the·<a·href="../../../doc/system/code_loading.html#on_load"><em><code·class="inline">on_load</code></em></a> | 181 | "Hello·world!"</code></pre><p>In·the·example·above·the·<a·href="../../../doc/system/code_loading.html#on_load"><em><code·class="inline">on_load</code></em></a> |
| 182 | directive·is·used·get·function·<code·class="inline">init</code>·called·automatically·when·the·module·is | 182 | directive·is·used·get·function·<code·class="inline">init</code>·called·automatically·when·the·module·is |
| Offset 398, 15 lines modified | Offset 398, 15 lines modified | ||
| 398 | ························when·Filename·::·<a·href="erlang.html#t:string/0">string</a>(),·FileInfo·::·<a·href="../../../lib/kernel-10.2.3/doc/html/file.html#t:file_info/0">file:file_info</a>().</pre> | 398 | ························when·Filename·::·<a·href="erlang.html#t:string/0">string</a>(),·FileInfo·::·<a·href="../../../lib/kernel-10.2.3/doc/html/file.html#t:file_info/0">file:file_info</a>().</pre> |
| 399 | ······</div> | 399 | ······</div> |
| 400 | <p>Retrieves·information·about·a·file.</p><p>Returns·<code·class="inline">{ok,·FileInfo}</code>·if·successful,·otherwise·<code·class="inline">error</code>.·<code·class="inline">FileInfo</code>·is·a | 400 | <p>Retrieves·information·about·a·file.</p><p>Returns·<code·class="inline">{ok,·FileInfo}</code>·if·successful,·otherwise·<code·class="inline">error</code>.·<code·class="inline">FileInfo</code>·is·a |
| 401 | record·<a·href="../../../lib/kernel-10.2.3/doc/html/file.html#t:file_info/0"><code·class="inline">file_info</code></a>,·defined·in·the·Kernel·include·file | 401 | record·<a·href="../../../lib/kernel-10.2.3/doc/html/file.html#t:file_info/0"><code·class="inline">file_info</code></a>,·defined·in·the·Kernel·include·file |
| 402 | ·<code·class="inline">file.hrl</code>.·Include·the·following·directive·in·the·module·from·which·the | 402 | ·<code·class="inline">file.hrl</code>.·Include·the·following·directive·in·the·module·from·which·the |
| 403 | function·is·called:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id=" | 403 | function·is·called:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="2884498196-1">(</span><span·class="s">"kernel/include/file.hrl"</span><span·class="p"·data-group-id="2884498196-1">)</span><span·class="p">.</span></code></pre><p>For·more·information·about·the·record·see·<a·href="../../../lib/kernel-10.2.3/doc/html/file.html#read_file_info/2"><code·class="inline">file:read_file_info/2</code></a>.</p><p><code·class="inline">Filename</code>·can·also·be·a·file·in·an·archive,·for·example, |
| 404 | <code·class="inline">$OTPROOT/lib/mnesia-4.4.7.ez/mnesia-4.4.7/ebin/mnesia</code>.·For·information | 404 | <code·class="inline">$OTPROOT/lib/mnesia-4.4.7.ez/mnesia-4.4.7/ebin/mnesia</code>.·For·information |
| 405 | about·archive·files,·see·<a·href="../../../lib/kernel-10.2.3/doc/html/code.html"><code·class="inline">code</code></a>.</p> | 405 | about·archive·files,·see·<a·href="../../../lib/kernel-10.2.3/doc/html/code.html"><code·class="inline">code</code></a>.</p> |
| 406 | ··</section> | 406 | ··</section> |
| 407 | </section> | 407 | </section> |
| 408 | <section·class="detail"·id="read_link_info/1"> | 408 | <section·class="detail"·id="read_link_info/1"> |
| 409 | ··<div·class="detail-header"> | 409 | ··<div·class="detail-header"> |
| Offset 145, 44 lines modified | Offset 145, 44 lines modified | ||
| 145 | ··<span·class="text">Erl·Tracer·Module·Example</span> | 145 | ··<span·class="text">Erl·Tracer·Module·Example</span> |
| 146 | </h2> | 146 | </h2> |
| 147 | <p>In·this·example,·a·tracer·module·with·a·NIF·back·end·sends·a·message·for·each | 147 | <p>In·this·example,·a·tracer·module·with·a·NIF·back·end·sends·a·message·for·each |
| 148 | <code·class="inline">send</code>·trace·tag·containing·only·the·sender·and·receiver.·Using·this·tracer | 148 | <code·class="inline">send</code>·trace·tag·containing·only·the·sender·and·receiver.·Using·this·tracer |
| 149 | module,·a·much·more·lightweight·message·tracer·is·used,·which·only·records·who | 149 | module,·a·much·more·lightweight·message·tracer·is·used,·which·only·records·who |
| 150 | sent·messages·to·who.</p><p>The·following·is·an·example·session·using·it·on·Linux:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="ss">gcc</span><span·class="w">·</span><span·class="o">-</span><span·class="n">I</span><span·class="w">·</span><span·class="ss">erts</span><span·class="o">-</span><span·class="mf">8.0</span><span·class="o">/</span><span·class="ss">include</span><span·class="o">/</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">fPIC</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">shared</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">o</span><span·class="w">·</span><span·class="ss">erl_msg_tracer</span><span·class="p">.</span><span·class="ss">so</span><span·class="w">·</span><span·class="ss">erl_msg_tracer</span><span·class="p">.</span><span·class="ss">c</span><span·class="w"> | 150 | sent·messages·to·who.</p><p>The·following·is·an·example·session·using·it·on·Linux:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="ss">gcc</span><span·class="w">·</span><span·class="o">-</span><span·class="n">I</span><span·class="w">·</span><span·class="ss">erts</span><span·class="o">-</span><span·class="mf">8.0</span><span·class="o">/</span><span·class="ss">include</span><span·class="o">/</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">fPIC</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">shared</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">o</span><span·class="w">·</span><span·class="ss">erl_msg_tracer</span><span·class="p">.</span><span·class="ss">so</span><span·class="w">·</span><span·class="ss">erl_msg_tracer</span><span·class="p">.</span><span·class="ss">c</span><span·class="w"> |
| 151 | </span><span·class="sc">$·</span><span·class="ss">erl</span><span·class="w"> | 151 | </span><span·class="sc">$·</span><span·class="ss">erl</span><span·class="w"> |
| 152 | </span><span·class="n">Erlang</span><span·class="o">/</span><span·class="n">OTP</span><span·class="w">·</span><span·class="mi">19</span><span·class="w">·</span><span·class="p"·data-group-id=" | 152 | </span><span·class="n">Erlang</span><span·class="o">/</span><span·class="n">OTP</span><span·class="w">·</span><span·class="mi">19</span><span·class="w">·</span><span·class="p"·data-group-id="6071570281-1">[</span><span·class="n">DEVELOPMENT</span><span·class="p"·data-group-id="6071570281-1">]</span><span·class="w">·</span><span·class="p"·data-group-id="6071570281-2">[</span><span·class="ss">erts</span><span·class="o">-</span><span·class="mf">8[·...·truncated·by·diffoscope;·len:·1414,·SHA:·2df1bc8aaf93290f3556bb16617ebf38bd23236beaf442db5523b76e83d6818f·...·]-8">]</span><span·class="w"> |
| 153 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V8</span><span·class="p">.</span><span·class="mi">0</span><span·class="w">··</span><span·class="p"·data-group-id=" | 153 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V8</span><span·class="p">.</span><span·class="mi">0</span><span·class="w">··</span><span·class="p"·data-group-id="6071570281-9">(</span><span·class="ss">abort</span><span·class="w">·</span><span·class="ss">with</span><span·class="w">·</span><span·class="err">^</span><span·class="n">G</span><span·class="p"·data-group-id="6071570281-9">)</span><span·class="gp·unselectable"> |
| 154 | 1>·</span><span·class="nf">c</span><span·class="p"·data-group-id=" | 154 | 1>·</span><span·class="nf">c</span><span·class="p"·data-group-id="6071570281-10">(</span><span·class="ss">erl_msg_tracer</span><span·class="p"·data-group-id="6071570281-10">)</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">erl_msg_tracer</span><span·class="p">:</span><span·class="nf">load</span><sp[·...·truncated·by·diffoscope;·len:·92,·SHA:·6546e6ed056fd4c4fb068d36981951bf7ed35e6461248e429006f104d96ac152·...·]-11">)</span><span·class="p">.</span><span·class="w"> |
| 155 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 155 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 156 | 2>·</span><span·class="n">Tracer</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">spawn</span><span·class="p"·data-group-id=" | 156 | 2>·</span><span·class="n">Tracer</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">spawn</span><span·class="p"·data-group-id="6071570281-12">(</span><span·class="k">fun</span><span·class="w">·</span><span·class="n">F</span><span·class="p"·data-group-id="6071570281-13">(</span><span·class="p"·data-group-id="6071570281-13">)</span><span·class="w">·</span><span·class="p">-></span[·...·truncated·by·diffoscope;·len:·954,·SHA:·c24553c93f2d500eeae1a5c3576c23247849a17cd0676a71f854f5b70968a222·...·]-12">)</span><span·class="p">.</span><span·class="w"> |
| 157 | </span><span·class="o"><</span><span·class="mf">0.37</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="gp·unselectable"> | 157 | </span><span·class="o"><</span><span·class="mf">0.37</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="gp·unselectable"> |
| 158 | 3>·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">trace</span><span·class="p"·data-group-id=" | 158 | 3>·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">trace</span><span·class="p"·data-group-id="6071570281-17">(</span><span·class="ss">new</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">true</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6071570281-18">[</span><span·class="nb">send</span>[·...·truncated·by·diffoscope;·len:·420,·SHA:·44987e091ad39bada70f79b1bcc8ea277a7c3183c902b158bd48c3f3621ea260·...·]-17">)</span><span·class="p">.</span><span·class="w"> |
| 159 | </span><span·class="mi">0</span><span·class="w"> | 159 | </span><span·class="mi">0</span><span·class="w"> |
| 160 | </span><span·class="p"·data-group-id=" | 160 | </span><span·class="p"·data-group-id="6071570281-20">{</span><span·class="nb">trace</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.39</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="o"><</spa[·...·truncated·by·diffoscope;·len:·147,·SHA:·341af26f1398b1f8654c6d59fc0b031bef53dd348af1efd7d87b66f64846ae6b·...·]-20">}</span><span·class="gp·unselectable"> |
| 161 | 4>·</span><span·class="p"·data-group-id=" | 161 | 4>·</span><span·class="p"·data-group-id="6071570281-21">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">D</span><span·class="p"·data-group-id="6071570281-21">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·cla[·...·truncated·by·diffoscope;·len:·375,·SHA:·cfde993fceffcfdcc4fdb13c473eea418588e0d6e1000c25c9d322b80078015a·...·]-22">)</span><span·class="p">.</span><span·class="w"> |
| 162 | </span><span·class="p"·data-group-id=" | 162 | </span><span·class="p"·data-group-id="6071570281-24">{</span><span·class="nb">trace</span><span·class="p">,</span><span·class="p">#</span><span·class="n">Port</span><span·class="o"><</span><span·class="mf">0.486</span><span·class="o">></span><span·class="p">,</span><span·class="o"><</[·...·truncated·by·diffoscope;·len:·150,·SHA:·9df5a72f4ff01a078517dfc91231f8dc50d374f4b280a6af1e23b682741e938a·...·]-24">}</span><span·class="w"> |
| 163 | </span><span·class="p"·data-group-id=" | 163 | </span><span·class="p"·data-group-id="6071570281-25">{</span><span·class="nb">trace</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.40</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="o"><</spa[·...·truncated·by·diffoscope;·len:·147,·SHA:·07c9f714d229f726897f2dda93952ff4cf94e42dad6eff088d01e12cd87f7215·...·]-25">}</span><span·class="w"> |
| 164 | </span><span·class="p"·data-group-id=" | 164 | </span><span·class="p"·data-group-id="6071570281-26">{</span><span·class="nb">trace</span><span·class="p">,</span><span·class="p">#</span><span·class="n">Port</span><span·class="o"><</span><span·class="mf">0.487</span><span·class="o">></span><span·class="p">,</span><span·class="o"><</[·...·truncated·by·diffoscope;·len:·149,·SHA:·722985e31b94907145e8717b24cb8b64faf6f44c011b453589d5c66a77403ba2·...·]-26">}</span><span·class="w"> |
| 165 | </span><span·class="p"·data-group-id=" | 165 | </span><span·class="p"·data-group-id="6071570281-27">{</span><span·class="nb">trace</span><span·class="p">,</span><span·class="p">#</span><span·class="n">Port</span><span·class="o"><</span><span·class="mf">0.488</span><span·class="o">></span><span·class="p">,</span><span·class="o"><</[·...·truncated·by·diffoscope;·len:·149,·SHA:·722985e31b94907145e8717b24cb8b64faf6f44c011b453589d5c66a77403ba2·...·]-27">}</span><span·class="w"> |
| 166 | </span><span·class="p"·data-group-id=" | 166 | </span><span·class="p"·data-group-id="6071570281-28">{</span><span·class="nb">trace</span><span·class="p">,</span><span·class="p">#</span><span·class="n">Port</span><span·class="o"><</span><span·class="mf">0.489</span><span·class="o">></span><span·class="p">,</span><span·class="o"><</[·...·truncated·by·diffoscope;·len:·149,·SHA:·722985e31b94907145e8717b24cb8b64faf6f44c011b453589d5c66a77403ba2·...·]-28">}</span><span·class="w"> |
| 167 | </span><span·class="p"·data-group-id=" | 167 | </span><span·class="p"·data-group-id="6071570281-29">{</span><span·class="nb">trace</span><span·class="p">,</span><span·class="p">#</span><span·class="n">Port</span><span·class="o"><</span><span·class="mf">0.490</span><span·class="o">></span><span·class="p">,</span><span·class="o"><</[·...·truncated·by·diffoscope;·len:·149,·SHA:·722985e31b94907145e8717b24cb8b64faf6f44c011b453589d5c66a77403ba2·...·]-29">}</span><span·class="w"> |
| 168 | </span><span·class="p"·data-group-id=" | 168 | </span><span·class="p"·data-group-id="6071570281-30">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.40</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="6071570281-30">}</span><span·class="w"> |
| 169 | </span><span·class="p"·data-group-id=" | 169 | </span><span·class="p"·data-group-id="6071570281-31">{</span><span·class="nb">trace</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.41</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="o"><</spa[·...·truncated·by·diffoscope;·len:·147,·SHA:·341af26f1398b1f8654c6d59fc0b031bef53dd348af1efd7d87b66f64846ae6b·...·]-31">}</span><span·class="w"> |
| 170 | </span><span·class="mi">5</span><span·class="o">></span></code></pre><p><code·class="inline">erl_msg_tracer.erl</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 170 | </span><span·class="mi">5</span><span·class="o">></span></code></pre><p><code·class="inline">erl_msg_tracer.erl</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="0198738895-1">(</span><span·class="ss">erl_msg_tracer</span><span·class="p"·data-group-id="0198738895-1">)</span><span·class="p">.</span><span·class="w"> |
| 171 | </span><span·class="w"> | 171 | </span><span·class="w"> |
| 172 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 172 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="0198738895-2">(</span><span·class="p"·data-group-id="0198738895-3">[</span><span·class="ss">enabled</span><span·class="p">/</span><span·class="mi">3</span><span·class="p">,</span><span·class="w">·</span><span·class="nb">trace</span><span·class="p">/</span>[·...·truncated·by·diffoscope;·len:·243,·SHA:·2746db46cd15d0f3adbf5c1fb01e3f2a514797ab2ce58d15292ce70a667af961·...·]5-2">)</span><span·class="p">.</span><span·class="w"> |
| 173 | </span><span·class="nf">load</span><span·class="p"·data-group-id=" | 173 | </span><span·class="nf">load</span><span·class="p"·data-group-id="0198738895-4">(</span><span·class="p"·data-group-id="0198738895-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 174 | ····</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">load_nif</span><span·class="p"·data-group-id=" | 174 | ····</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">load_nif</span><span·class="p"·data-group-id="0198738895-5">(</span><span·class="s">"erl_msg_tracer"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0198738895-6">[</span><span·class="p"·data-group-id="0198738895-6">]</span><span·class="p"·data-group-id="[·...·truncated·by·diffoscope;·len:·9,·SHA:·938b9aaba09f93f3ea9a72302e341ed33c7a1173b9a0c6321bbc3d05d30eec97·...·]5-5">)</span><span·class="p">.</span><span·class="w"> |
| 175 | </span><span·class="nf">enabled</span><span·class="p"·data-group-id=" | 175 | </span><span·class="nf">enabled</span><span·class="p"·data-group-id="0198738895-7">(</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="p"·data-group-id="0198738895-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 176 | ····</span><span·class="ss">error</span><span·class="p">.</span><span·class="w"> | 176 | ····</span><span·class="ss">error</span><span·class="p">.</span><span·class="w"> |
| 177 | </span><span·class="nf">trace</span><span·class="p"·data-group-id=" | 177 | </span><span·class="nf">trace</span><span·class="p"·data-group-id="0198738895-8">(</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_<[·...·truncated·by·diffoscope;·len:·118,·SHA:·9fbba6f7a64d533bee17eef1845f25975834f66401fbea4268bc99dd91241f1a·...·]5-8">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 178 | ····</span><span·class="ss">error</span><span·class="p">.</span></code></pre><p><code·class="inline">erl_msg_tracer.c</code>:</p><pre><code·class="c">#include·<erl_nif.h> | 178 | ····</span><span·class="ss">error</span><span·class="p">.</span></code></pre><p><code·class="inline">erl_msg_tracer.c</code>:</p><pre><code·class="c">#include·<erl_nif.h> |
| 179 | /*·NIF·interface·declarations·*/ | 179 | /*·NIF·interface·declarations·*/ |
| 180 | static·int·load(ErlNifEnv*·env,·void**·priv_data,·ERL_NIF_TERM·load_info); | 180 | static·int·load(ErlNifEnv*·env,·void**·priv_data,·ERL_NIF_TERM·load_info); |
| 181 | static·int·upgrade(ErlNifEnv*·env,·void**·priv_data,·void**·old_priv_data,·ERL_NIF_TERM·load_info); | 181 | static·int·upgrade(ErlNifEnv*·env,·void**·priv_data,·void**·old_priv_data,·ERL_NIF_TERM·load_info); |
| 182 | static·void·unload(ErlNifEnv*·env,·void*·priv_data); | 182 | static·void·unload(ErlNifEnv*·env,·void*·priv_data); |
| Offset 6846, 16 lines modified | Offset 6846, 16 lines modified | ||
| 6846 | ······<div·class="specs"> | 6846 | ······<div·class="specs"> |
| 6847 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·adler32(OldAdler,·Data)·->·<a·href="#t:non_neg_integer/0">non_neg_integer</a>()·when·OldAdler·::·<a·href="#t:non_neg_integer/0">non_neg_integer</a>(),·Data·::·<a·href="#t:iodata/0">iodata</a>().</pre> | 6847 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·adler32(OldAdler,·Data)·->·<a·href="#t:non_neg_integer/0">non_neg_integer</a>()·when·OldAdler·::·<a·href="#t:non_neg_integer/0">non_neg_integer</a>(),·Data·::·<a·href="#t:iodata/0">iodata</a>().</pre> |
| 6848 | ······</div> | 6848 | ······</div> |
| 6849 | <p>Continues·computing·the·adler32·checksum·by·combining·the·previous·checksum, | 6849 | <p>Continues·computing·the·adler32·checksum·by·combining·the·previous·checksum, |
| 6850 | <code·class="inline">OldAdler</code>,·with·the·checksum·of·<code·class="inline">Data</code>.</p><p>The·following·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">X</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">adler32</span><span·class="p"·data-group-id=" | 6850 | <code·class="inline">OldAdler</code>,·with·the·checksum·of·<code·class="inline">Data</code>.</p><p>The·following·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">X</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">adler32</span><span·class="p"·data-group-id="2424177995-1">(</span><span·class="n">Data1</span><span·class="p"·data-group-id="2424177995-1">)</span><span·class="p">,</span><span·class="w"> |
| 6851 | </span><span·class="n">Y</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">adler32</span><span·class="p"·data-group-id=" | 6851 | </span><span·class="n">Y</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">adler32</span><span·class="p"·data-group-id="2424177995-2">(</span><span·class="n">X</span><span·class="p">,</span><span·class="n">Data2</span><span·class="p"·data-group-id="2424177995-2">)</span><span·class="p">.</span></code></pre><p>assigns·the·same·value·to·<code·class="inline">Y</code>·as·this:<[·...·truncated·by·diffoscope;·len:·512,·SHA:·9576d3cd5e70aa3961f029dd05d25e0e60f02b7cc7da4e9c3263ab62f1d03b1c·...·]-1">)</span><span·class="p">.</span></code></pre> |
| 6852 | ··</section> | 6852 | ··</section> |
| 6853 | </section> | 6853 | </section> |
| 6854 | <section·class="detail"·id="adler32_combine/3"> | 6854 | <section·class="detail"·id="adler32_combine/3"> |
| 6855 | ··<div·class="detail-header"> | 6855 | ··<div·class="detail-header"> |
| 6856 | ····<a·href="#adler32_combine/3"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 6856 | ····<a·href="#adler32_combine/3"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 6857 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 6857 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 6878, 18 lines modified | Offset 6878, 18 lines modified | ||
| 6878 | ·····························FirstAdler·::·<a·href="#t:non_neg_integer/0">non_neg_integer</a>(), | 6878 | ·····························FirstAdler·::·<a·href="#t:non_neg_integer/0">non_neg_integer</a>(), |
| 6879 | ·····························SecondAdler·::·<a·href="#t:non_neg_integer/0">non_neg_integer</a>(), | 6879 | ·····························SecondAdler·::·<a·href="#t:non_neg_integer/0">non_neg_integer</a>(), |
| 6880 | ·····························SecondSize·::·<a·href="#t:non_neg_integer/0">non_neg_integer</a>().</pre> | 6880 | ·····························SecondSize·::·<a·href="#t:non_neg_integer/0">non_neg_integer</a>().</pre> |
| 6881 | ······</div> | 6881 | ······</div> |
| 6882 | <p>Combines·two·previously·computed·adler32·checksums.</p><p>This·computation·requires·the·size·of·the·data·object·for·the·second·checksum | 6882 | <p>Combines·two·previously·computed·adler32·checksums.</p><p>This·computation·requires·the·size·of·the·data·object·for·the·second·checksum |
| 6883 | to·be·known.</p><p>The·following·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Y</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">adler32</span><span·class="p"·data-group-id=" | 6883 | to·be·known.</p><p>The·following·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Y</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">adler32</span><span·class="p"·data-group-id="8382010555-1">(</span><span·class="n">Data1</span><span·class="p"·data-group-id="8382010555-1">)</span><span·class="p">,</span><span·class="w"> |
| 6884 | </span><span·class="n">Z</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">adler32</span><span·class="p"·data-group-id=" | 6884 | </span><span·class="n">Z</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">adler32</span><span·class="p"·data-group-id="8382010555-2">(</span><span·class="n">Y</span><span·class="p">,</span><span·class="n">Data2</span><span·class="p"·data-group-id="8382010555-2">)</span><span·class="p">.</span></code></pre><p>assigns·the·same·value·to·<code·class="inline">Z</code>·as·this:<[·...·truncated·by·diffoscope;·len:·354,·SHA:·bd63170b0d6fccdf3297069ad902dc843384ee999c61263d0fee3690e883cb04·...·]-1">)</span><span·class="p">,</span><span·class="w"> |
| 6885 | </span><span·class="n">Y</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">adler32</span><span·class="p"·data-group-id=" | 6885 | </span><span·class="n">Y</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">adler32</span><span·class="p"·data-group-id="4340529963-2">(</span><span·class="n">Data2</span><span·class="p"·data-group-id="4340529963-2">)</span><span·class="p">,</span><span·class="w"> |
| 6886 | </span><span·class="n">Z</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">adler32_combine</span><span·class="p"·data-group-id=" | 6886 | </span><span·class="n">Z</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">adler32_combine</span><span·class="p"·data-group-id="4340529963-3">(</span><span·class="n">X</span><span·class="p">,</span><span·class="n">Y</span><span·class="p">,</span><span·class="nf">iolist_size</span><span·class="p"·data-group-id="4340529963-4">(</span><span·class="n">Data2</span><span·class="p"·data-g[·...·truncated·by·diffoscope;·len:·72,·SHA:·0f7bce55f16703f44d05aa5bd73be2fd518b39727a52e17a4ac014611b2953c7·...·]-3">)</span><span·class="p">.</span></code></pre> |
| 6887 | ··</section> | 6887 | ··</section> |
| 6888 | </section> | 6888 | </section> |
| 6889 | <section·class="detail"·id="crc32/1"> | 6889 | <section·class="detail"·id="crc32/1"> |
| 6890 | ··<div·class="detail-header"> | 6890 | ··<div·class="detail-header"> |
| 6891 | ····<a·href="#crc32/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 6891 | ····<a·href="#crc32/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 6892 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 6892 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 6934, 16 lines modified | Offset 6934, 16 lines modified | ||
| 6934 | ······<div·class="specs"> | 6934 | ······<div·class="specs"> |
| 6935 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·crc32(OldCrc,·Data)·->·<a·href="#t:non_neg_integer/0">non_neg_integer</a>()·when·OldCrc·::·<a·href="#t:non_neg_integer/0">non_neg_integer</a>(),·Data·::·<a·href="#t:iodata/0">iodata</a>().</pre> | 6935 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·crc32(OldCrc,·Data)·->·<a·href="#t:non_neg_integer/0">non_neg_integer</a>()·when·OldCrc·::·<a·href="#t:non_neg_integer/0">non_neg_integer</a>(),·Data·::·<a·href="#t:iodata/0">iodata</a>().</pre> |
| 6936 | ······</div> | 6936 | ······</div> |
| 6937 | <p>Continues·computing·the·crc32·checksum·by·combining·the·previous·checksum, | 6937 | <p>Continues·computing·the·crc32·checksum·by·combining·the·previous·checksum, |
| 6938 | <code·class="inline">OldCrc</code>,·with·the·checksum·of·<code·class="inline">Data</code>.</p><p>The·following·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">X</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">crc32</span><span·class="p"·data-group-id=" | 6938 | <code·class="inline">OldCrc</code>,·with·the·checksum·of·<code·class="inline">Data</code>.</p><p>The·following·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">X</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">crc32</span><span·class="p"·data-group-id="5666165730-1">(</span><span·class="n">Data1</span><span·class="p"·data-group-id="5666165730-1">)</span><span·class="p">,</span><span·class="w"> |
| 6939 | </span><span·class="n">Y</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">crc32</span><span·class="p"·data-group-id=" | 6939 | </span><span·class="n">Y</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">crc32</span><span·class="p"·data-group-id="5666165730-2">(</span><span·class="n">X</span><span·class="p">,</span><span·class="n">Data2</span><span·class="p"·data-group-id="5666165730-2">)</span><span·class="p">.</span></code></pre><p>assigns·the·same·value·to·<code·class="inline">Y</code>·as·this:<[·...·truncated·by·diffoscope;·len:·510,·SHA:·952bc92e406d0c1056a119765543a0419252e63c1173ee194e9409929740b3fe·...·]-1">)</span><span·class="p">.</span></code></pre> |
| 6940 | ··</section> | 6940 | ··</section> |
| 6941 | </section> | 6941 | </section> |
| 6942 | <section·class="detail"·id="crc32_combine/3"> | 6942 | <section·class="detail"·id="crc32_combine/3"> |
| 6943 | ··<div·class="detail-header"> | 6943 | ··<div·class="detail-header"> |
| 6944 | ····<a·href="#crc32_combine/3"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 6944 | ····<a·href="#crc32_combine/3"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 6945 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 6945 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 6966, 18 lines modified | Offset 6966, 18 lines modified | ||
| 6966 | ···························FirstCrc·::·<a·href="#t:non_neg_integer/0">non_neg_integer</a>(), | 6966 | ···························FirstCrc·::·<a·href="#t:non_neg_integer/0">non_neg_integer</a>(), |
| 6967 | ···························SecondCrc·::·<a·href="#t:non_neg_integer/0">non_neg_integer</a>(), | 6967 | ···························SecondCrc·::·<a·href="#t:non_neg_integer/0">non_neg_integer</a>(), |
| 6968 | ···························SecondSize·::·<a·href="#t:non_neg_integer/0">non_neg_integer</a>().</pre> | 6968 | ···························SecondSize·::·<a·href="#t:non_neg_integer/0">non_neg_integer</a>().</pre> |
| 6969 | ······</div> | 6969 | ······</div> |
| 6970 | <p>Combines·two·previously·computed·crc32·checksums.</p><p>This·computation·requires·the·size·of·the·data·object·for·the·second·checksum | 6970 | <p>Combines·two·previously·computed·crc32·checksums.</p><p>This·computation·requires·the·size·of·the·data·object·for·the·second·checksum |
| 6971 | to·be·known.</p><p>The·following·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Y</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">crc32</span><span·class="p"·data-group-id=" | 6971 | to·be·known.</p><p>The·following·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Y</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">crc32</span><span·class="p"·data-group-id="9822964852-1">(</span><span·class="n">Data1</span><span·class="p"·data-group-id="9822964852-1">)</span><span·class="p">,</span><span·class="w"> |
| 6972 | </span><span·class="n">Z</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">crc32</span><span·class="p"·data-group-id=" | 6972 | </span><span·class="n">Z</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">crc32</span><span·class="p"·data-group-id="9822964852-2">(</span><span·class="n">Y</span><span·class="p">,</span><span·class="n">Data2</span><span·class="p"·data-group-id="9822964852-2">)</span><span·class="p">.</span></code></pre><p>assigns·the·same·value·to·<code·class="inline">Z</code>·as·this:<[·...·truncated·by·diffoscope;·len:·352,·SHA:·fb35cb5bf681321b13cfde04ed82c06e7a6c34f3117c7dcb5ad7464fd5350b98·...·]-1">)</span><span·class="p">,</span><span·class="w"> |
| 6973 | </span><span·class="n">Y</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">crc32</span><span·class="p"·data-group-id=" | 6973 | </span><span·class="n">Y</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">crc32</span><span·class="p"·data-group-id="7340596710-2">(</span><span·class="n">Data2</span><span·class="p"·data-group-id="7340596710-2">)</span><span·class="p">,</span><span·class="w"> |
| 6974 | </span><span·class="n">Z</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">crc32_combine</span><span·class="p"·data-group-id=" | 6974 | </span><span·class="n">Z</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">crc32_combine</span><span·class="p"·data-group-id="7340596710-3">(</span><span·class="n">X</span><span·class="p">,</span><span·class="n">Y</span><span·class="p">,</span><span·class="nf">iolist_size</span><span·class="p"·data-group-id="7340596710-4">(</span><span·class="n">Data2</span><span·class="p"·data-g[·...·truncated·by·diffoscope;·len:·72,·SHA:·e487e1ba026ce7a1c89d1ca92d48f5047925f1675ca1fa1f48d7d3362eb18834·...·]-3">)</span><span·class="p">.</span></code></pre> |
| 6975 | ··</section> | 6975 | ··</section> |
| 6976 | </section> | 6976 | </section> |
| 6977 | <section·class="detail"·id="md5/1"> | 6977 | <section·class="detail"·id="md5/1"> |
| 6978 | ··<div·class="detail-header"> | 6978 | ··<div·class="detail-header"> |
| 6979 | ····<a·href="#md5/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 6979 | ····<a·href="#md5/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 6980 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 6980 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 8129, 19 lines modified | Offset 8129, 19 lines modified | ||
| 8129 | the·<code·class="inline">Info</code>·map·in·the·returned·result·will·contain·the·key·<code·class="inline">node_type</code> | 8129 | the·<code·class="inline">Info</code>·map·in·the·returned·result·will·contain·the·key·<code·class="inline">node_type</code> |
| 8130 | associated·with·the·value·<code·class="inline">NodeTypeInfo</code>.·Currently·the·following·node·types | 8130 | associated·with·the·value·<code·class="inline">NodeTypeInfo</code>.·Currently·the·following·node·types |
| 8131 | exist:</p><ul><li><p><strong><code·class="inline">visible</code></strong>·-·The·node·is·connected·to·the·node·of·the·calling·process | 8131 | exist:</p><ul><li><p><strong><code·class="inline">visible</code></strong>·-·The·node·is·connected·to·the·node·of·the·calling·process |
| 8132 | through·an·ordinary·visible·connection.·That·is,·the·node·name·would·appear | 8132 | through·an·ordinary·visible·connection.·That·is,·the·node·name·would·appear |
| 8133 | in·the·result·returned·by·<a·href="#nodes/0"><code·class="inline">nodes/0</code></a>.</p></li><li><p><strong><code·class="inline">hidden</code></strong>·-·The·node·is·connected·to·the·node·of·the·calling·process | 8133 | in·the·result·returned·by·<a·href="#nodes/0"><code·class="inline">nodes/0</code></a>.</p></li><li><p><strong><code·class="inline">hidden</code></strong>·-·The·node·is·connected·to·the·node·of·the·calling·process |
| 8134 | through·a·hidden·connection.·That·is,·the·node·name·would·<em>not</em>·appear·in | 8134 | through·a·hidden·connection.·That·is,·the·node·name·would·<em>not</em>·appear·in |
| 8135 | the·result·returned·by·<a·href="#nodes/0"><code·class="inline">nodes/0</code></a>.</p></li><li><p><strong><code·class="inline">this</code></strong>·-·This·is·the·node·of·the·calling·process.</p></li><li><p><strong><code·class="inline">known</code></strong>·-·The·node·is·not·connected·but·known·to·the·node·of·the·calling | 8135 | the·result·returned·by·<a·href="#nodes/0"><code·class="inline">nodes/0</code></a>.</p></li><li><p><strong><code·class="inline">this</code></strong>·-·This·is·the·node·of·the·calling·process.</p></li><li><p><strong><code·class="inline">known</code></strong>·-·The·node·is·not·connected·but·known·to·the·node·of·the·calling |
| 8136 | process.</p></li></ul></li></ul><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">(a@localhost)1>·</span><span·class="nf">nodes</span><span·class="p"·data-group-id=" | 8136 | process.</p></li></ul></li></ul><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">(a@localhost)1>·</span><span·class="nf">nodes</span><span·class="p"·data-group-id="2036107943-1">(</span><span·class="p"·data-group-id="2036107943-2">[</span><span·class="ss">this</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">connected</span><span·class="p"·data-group-id="2036107943-2">]</span><span·class="p">,</[·...·truncated·by·diffoscope;·len:·407,·SHA:·0678535aa1d37aa7a34f3b5413e9d0c89e74634c6b0521b45d57d680b207180d·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 8137 | </span><span·class="p"·data-group-id=" | 8137 | </span><span·class="p"·data-group-id="2036107943-4">[</span><span·class="p"·data-group-id="2036107943-5">{</span><span·class="ss">c@localhost</span><span·class="p">,</span><span·class="p"·data-group-id="2036107943-6">#{</span><span·class="ss">connection_id</span><span·class="w">·</span><span·c[·...·truncated·by·diffoscope;·len:·334,·SHA:·8d023dec84d5f99e775d5306b64197312edec5ea893a1d63249790856dce0bcc·...·]-5">}</span><span·class="p">,</span><span·class="w"> |
| 8138 | ·</span><span·class="p"·data-group-id=" | 8138 | ·</span><span·class="p"·data-group-id="2036107943-7">{</span><span·class="ss">b@localhost</span><span·class="p">,</span><span·class="p"·data-group-id="2036107943-8">#{</span><span·class="ss">connection_id</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·cl[·...·truncated·by·diffoscope;·len:·281,·SHA:·de290307814e1d6409613b6a2ab2f876ca30e6daf4c3046bdc29936a82ec4323·...·]-7">}</span><span·class="p">,</span><span·class="w"> |
| 8139 | ·</span><span·class="p"·data-group-id=" | 8139 | ·</span><span·class="p"·data-group-id="2036107943-9">{</span><span·class="ss">a@localhost</span><span·class="p">,</span><span·class="p"·data-group-id="2036107943-10">#{</span><span·class="ss">connection_id</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·c[·...·truncated·by·diffoscope;·len:·335,·SHA:·6ed098485af93227b3c1cbf0b902248dff0c6669b3a485a22a2b2a59d9e32a42·...·]-4">]</span><span·class="w"> |
| 8140 | </span><span·class="p"·data-group-id=" | 8140 | </span><span·class="p"·data-group-id="2036107943-11">(</span><span·class="ss">a@localhost</span><span·class="p"·data-group-id="2036107943-11">)</span><span·class="mi">2</span><span·class="o">></span></code></pre> |
| 8141 | ··</section> | 8141 | ··</section> |
| 8142 | </section> | 8142 | </section> |
| 8143 | <section·class="detail"·id="set_cookie/1"> | 8143 | <section·class="detail"·id="set_cookie/1"> |
| 8144 | ··<div·class="detail-header"> | 8144 | ··<div·class="detail-header"> |
| 8145 | ····<a·href="#set_cookie/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 8145 | ····<a·href="#set_cookie/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 8146 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 8146 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 8237, 17 lines modified | Offset 8237, 17 lines modified | ||
| 8237 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·abs(Float)·->·<a·href="#t:float/0">float</a>()·when·Float·::·<a·href="#t:float/0">float</a>(); | 8237 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·abs(Float)·->·<a·href="#t:float/0">float</a>()·when·Float·::·<a·href="#t:float/0">float</a>(); |
| 8238 | ·········(Int)·->·<a·href="#t:non_neg_integer/0">non_neg_integer</a>()·when·Int·::·<a·href="#t:integer/0">integer</a>().</pre> | 8238 | ·········(Int)·->·<a·href="#t:non_neg_integer/0">non_neg_integer</a>()·when·Int·::·<a·href="#t:integer/0">integer</a>().</pre> |
| 8239 | ······</div> | 8239 | ······</div> |
| 8240 | <p>Returns·an·integer·or·float·that·is·the·arithmetical·absolute·value·of·<code·class="inline">Float</code> | 8240 | <p>Returns·an·integer·or·float·that·is·the·arithmetical·absolute·value·of·<code·class="inline">Float</code> |
| 8241 | or·<code·class="inline">Int</code>.</p><p>For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nf">abs</span><span·class="p"·data-group-id="5 | 8241 | or·<code·class="inline">Int</code>.</p><p>For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nf">abs</span><span·class="p"·data-group-id="5840136612-1">(</span><span·class="o">-</span><span·class="mf">3.33</span><span·class="p"·data-group-id="5840136612-1">)</span><span·class="p">.</span><span·class="w"> |
| 8242 | </span><span·class="mf">3.33</span><span·class="gp·unselectable"> | 8242 | </span><span·class="mf">3.33</span><span·class="gp·unselectable"> |
| 8243 | >·</span><span·class="nf">abs</span><span·class="p"·data-group-id="5 | 8243 | >·</span><span·class="nf">abs</span><span·class="p"·data-group-id="5840136612-2">(</span><span·class="o">-</span><span·class="mi">3</span><span·class="p"·data-group-id="5840136612-2">)</span><span·class="p">.</span><span·class="w"> |
| 8244 | </span><span·class="mi">3</span></code></pre> | 8244 | </span><span·class="mi">3</span></code></pre> |
| 8245 | ··</section> | 8245 | ··</section> |
| 8246 | </section> | 8246 | </section> |
| 8247 | <section·class="detail"·id="append_element/2"> | 8247 | <section·class="detail"·id="append_element/2"> |
| 8248 | ··<div·class="detail-header"> | 8248 | ··<div·class="detail-header"> |
| 8249 | ····<a·href="#append_element/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 8249 | ····<a·href="#append_element/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 8269, 16 lines modified | Offset 8269, 16 lines modified | ||
| 8269 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·append_element(Tuple1,·Term)·->·Tuple2·when·Tuple1·::·<a·href="#t:tuple/0">tuple</a>(),·Tuple2·::·<a·href="#t:tuple/0">tuple</a>(),·Term·::·<a·href="#t:term/0">term</a>().</pre> | 8269 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·append_element(Tuple1,·Term)·->·Tuple2·when·Tuple1·::·<a·href="#t:tuple/0">tuple</a>(),·Tuple2·::·<a·href="#t:tuple/0">tuple</a>(),·Term·::·<a·href="#t:term/0">term</a>().</pre> |
| 8270 | ······</div> | 8270 | ······</div> |
| 8271 | <p>Returns·a·new·tuple·that·has·one·element·more·than·<code·class="inline">Tuple1</code>,·and·contains·the | 8271 | <p>Returns·a·new·tuple·that·has·one·element·more·than·<code·class="inline">Tuple1</code>,·and·contains·the |
| 8272 | elements·in·<code·class="inline">Tuple1</code>·followed·by·<code·class="inline">Term</code>·as·the·last·element.</p><p>Semantically·equivalent·to | 8272 | elements·in·<code·class="inline">Tuple1</code>·followed·by·<code·class="inline">Term</code>·as·the·last·element.</p><p>Semantically·equivalent·to |
| 8273 | <a·href="#list_to_tuple/1"><code·class="inline">list_to_tuple(tuple_to_list(Tuple1)·++·[Term])</code></a>,·but·much | 8273 | <a·href="#list_to_tuple/1"><code·class="inline">list_to_tuple(tuple_to_list(Tuple1)·++·[Term])</code></a>,·but·much |
| 8274 | faster.</p><p>For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">append_element</span><span·class="p"·data-group-id="3668918698-1">(</span><span·class="p"·data-group-id="3668918698-2">{</span><span·class="ss">one</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">two</span><span·class="p"·data-group-id="3668918698-2">}</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">three</span><span·class="p"·data-group-id="3668918698-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 8275 | 8274 | faster.</p><p>For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">append_element</span><span·class="p"·data-group-id="1250870549-1"[·...·truncated·by·diffoscope;·len:·386,·SHA:·b6ca40f8f6037fc4d355c3dd174a9ef60ed8e5e4931c2bc48652ab9d11371648·...·]> | |
| 8275 | </span><span·class="p"·data-group-id="1250870549-3">{</span><span·class="ss">one</span><span·class="p">,</span><span·class="ss">two</span><span·class="p">,</span><span·class="ss">three</span><span·class="p"·data-group-id="1250870549-3">}</span></code></pre> | ||
| 8276 | ··</section> | 8276 | ··</section> |
| 8277 | </section> | 8277 | </section> |
| 8278 | <section·class="detail"·id="atom_to_binary/1"> | 8278 | <section·class="detail"·id="atom_to_binary/1"> |
| 8279 | ··<div·class="detail-header"> | 8279 | ··<div·class="detail-header"> |
| 8280 | ····<a·href="#atom_to_binary/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 8280 | ····<a·href="#atom_to_binary/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 8281 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 8281 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 127 | <p>Run·a·script·written·in·Erlang.</p><h2·id="synopsis"·class="section-heading"> | 127 | <p>Run·a·script·written·in·Erlang.</p><h2·id="synopsis"·class="section-heading"> |
| 128 | ··<a·href="#synopsis"·class="hover-link"> | 128 | ··<a·href="#synopsis"·class="hover-link"> |
| 129 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 129 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 130 | ··</a> | 130 | ··</a> |
| 131 | ··<span·class="text">Synopsis</span> | 131 | ··<span·class="text">Synopsis</span> |
| 132 | </h2> | 132 | </h2> |
| 133 | <pre><code·class="makeup·erlang"·translate="no"><span·class="ss">script</span><span·class="o">-</span><span·class="ss">name</span><span·class="w">·</span><span·class="p"·data-group-id=" | 133 | <pre><code·class="makeup·erlang"·translate="no"><span·class="ss">script</span><span·class="o">-</span><span·class="ss">name</span><span·class="w">·</span><span·class="p"·data-group-id="8020772411-1">[</span><span·class="ss">arg1</span><span·class="w">·</span><span·class="ss">arg2</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="8020772411-1">]</span></code></pre><h2·id="description"·class="section-heading"> |
| 134 | ··<a·href="#description"·class="hover-link"> | 134 | ··<a·href="#description"·class="hover-link"> |
| 135 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 135 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 136 | ··</a> | 136 | ··</a> |
| 137 | ··<span·class="text">Description</span> | 137 | ··<span·class="text">Description</span> |
| 138 | </h2> | 138 | </h2> |
| 139 | <p><code·class="inline">escript</code>·provides·support·for·running·short·Erlang·programs·without·having·to | 139 | <p><code·class="inline">escript</code>·provides·support·for·running·short·Erlang·programs·without·having·to |
| 140 | compile·them·first,·and·an·easy·way·to·retrieve·the·command-line·arguments. | 140 | compile·them·first,·and·an·easy·way·to·retrieve·the·command-line·arguments. |
| 141 | <code·class="inline">escript</code>s·are·created·by·either·writing·them·by·hand·or·using·<a·href="../../../lib/stdlib-6.2.1/doc/html/escript.html#create/2"><code·class="inline">escript:create/2</code></a>.</p><p>escripts·are·run·by·directly·invoking·them·(does·not·work·on·Windows):</p><pre><code·class="text">script-name·[arg1·arg2...]</code></pre><p>or·by·calling·the·<code·class="inline">escript</code>·program·(works·on·all·platforms):</p><pre><code·class="text">escript·[escript-flags]·script-name.escript·[arg1·arg2...]</code></pre><p>For·example:</p><pre><code·class="text">$·chmod·u+x·factorial | 141 | <code·class="inline">escript</code>s·are·created·by·either·writing·them·by·hand·or·using·<a·href="../../../lib/stdlib-6.2.1/doc/html/escript.html#create/2"><code·class="inline">escript:create/2</code></a>.</p><p>escripts·are·run·by·directly·invoking·them·(does·not·work·on·Windows):</p><pre><code·class="text">script-name·[arg1·arg2...]</code></pre><p>or·by·calling·the·<code·class="inline">escript</code>·program·(works·on·all·platforms):</p><pre><code·class="text">escript·[escript-flags]·script-name.escript·[arg1·arg2...]</code></pre><p>For·example:</p><pre><code·class="text">$·chmod·u+x·factorial |
| 142 | $·cat·factorial</code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="ch">#!/usr/bin/env·escript | 142 | $·cat·factorial</code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="ch">#!/usr/bin/env·escript |
| 143 | </span><span·class="c1">%%·-*-·erlang·-*-</span><span·class="w"> | 143 | </span><span·class="c1">%%·-*-·erlang·-*-</span><span·class="w"> |
| 144 | </span><span·class="c1">%%!·-sname·factorial·-mnesia·debug·verbose</span><span·class="w"> | 144 | </span><span·class="c1">%%!·-sname·factorial·-mnesia·debug·verbose</span><span·class="w"> |
| 145 | </span><span·class="nf">main</span><span·class="p"·data-group-id=" | 145 | </span><span·class="nf">main</span><span·class="p"·data-group-id="0827275038-1">(</span><span·class="p"·data-group-id="0827275038-2">[</span><span·class="n">String</span><span·class="p"·data-group-id="0827275038-2">]</span><span·class="p"·data-group-id="0827275038-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 146 | ····</span><span·class="k">try</span><span·class="w"> | 146 | ····</span><span·class="k">try</span><span·class="w"> |
| 147 | ········</span><span·class="n">N</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">list_to_integer</span><span·class="p"·data-group-id=" | 147 | ········</span><span·class="n">N</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">list_to_integer</span><span·class="p"·data-group-id="0827275038-3">(</span><span·class="n">String</span><span·class="p"·data-group-id="0827275038-3">)</span><span·class="p">,</span><span·class="w"> |
| 148 | ········</span><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fac</span><span·class="p"·data-group-id=" | 148 | ········</span><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fac</span><span·class="p"·data-group-id="0827275038-4">(</span><span·class="n">N</span><span·class="p"·data-group-id="0827275038-4">)</span><span·class="p">,</span><span·class="w"> |
| 149 | ········</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 149 | ········</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="0827275038-5">(</span><span·class="s">"factorial·</span><span·class="si">~w</span><span·class="s">·=·</span><span·class="si">~w</span><span·class="s">\n"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0827275[·...·truncated·by·diffoscope;·len:·181,·SHA:·213c9fce5ef7d83da89c67ed84245ecafa81e916515e4b9fb884cc2acc6dc707·...·]-5">)</span><span·class="w"> |
| 150 | ····</span><span·class="k">catch</span><span·class="w"> | 150 | ····</span><span·class="k">catch</span><span·class="w"> |
| 151 | ········</span><span·class="p">_</span><span·class="p">:</span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 151 | ········</span><span·class="p">_</span><span·class="p">:</span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 152 | ············</span><span·class="nf">usage</span><span·class="p"·data-group-id=" | 152 | ············</span><span·class="nf">usage</span><span·class="p"·data-group-id="0827275038-7">(</span><span·class="p"·data-group-id="0827275038-7">)</span><span·class="w"> |
| 153 | ····</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> | 153 | ····</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> |
| 154 | </span><span·class="nf">main</span><span·class="p"·data-group-id=" | 154 | </span><span·class="nf">main</span><span·class="p"·data-group-id="0827275038-8">(</span><span·class="p">_</span><span·class="p"·data-group-id="0827275038-8">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 155 | ····</span><span·class="nf">usage</span><span·class="p"·data-group-id=" | 155 | ····</span><span·class="nf">usage</span><span·class="p"·data-group-id="0827275038-9">(</span><span·class="p"·data-group-id="0827275038-9">)</span><span·class="p">.</span><span·class="w"> |
| 156 | </span><span·class="nf">usage</span><span·class="p"·data-group-id=" | 156 | </span><span·class="nf">usage</span><span·class="p"·data-group-id="0827275038-10">(</span><span·class="p"·data-group-id="0827275038-10">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 157 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 157 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="0827275038-11">(</span><span·class="s">"usage:·factorial·integer\n"</span><span·class="p"·data-group-id="0827275038-11">)</span><span·class="p">,</span><span·class="w"> |
| 158 | ····</span><span·class="nf">halt</span><span·class="p"·data-group-id=" | 158 | ····</span><span·class="nf">halt</span><span·class="p"·data-group-id="0827275038-12">(</span><span·class="mi">1</span><span·class="p"·data-group-id="0827275038-12">)</span><span·class="p">.</span><span·class="w"> |
| 159 | </span><span·class="nf">fac</span><span·class="p"·data-group-id=" | 159 | </span><span·class="nf">fac</span><span·class="p"·data-group-id="0827275038-13">(</span><span·class="mi">0</span><span·class="p"·data-group-id="0827275038-13">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="mi">1</span><span·class="p">;</span><span·class="w"> |
| 160 | </span><span·class="nf">fac</span><span·class="p"·data-group-id=" | 160 | </span><span·class="nf">fac</span><span·class="p"·data-group-id="0827275038-14">(</span><span·class="n">N</span><span·class="p"·data-group-id="0827275038-14">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">N</span><span·class="w">·</span><span·class="o">*</span><span·c[·...·truncated·by·diffoscope;·len:·212,·SHA:·62e1647560b38527ddb556f54597d985158964c2bb3e2dc3afdb27a9feb86045·...·]-15">)</span><span·class="p">.</span></code></pre><pre><code·class="text">$·./factorial·5 |
| 161 | factorial·5·=·120 | 161 | factorial·5·=·120 |
| 162 | $·./factorial | 162 | $·./factorial |
| 163 | usage:·factorial·integer | 163 | usage:·factorial·integer |
| 164 | $·./factorial·five | 164 | $·./factorial·five |
| 165 | usage:·factorial·integer</code></pre><p>The·header·of·the·Erlang·script·in·the·example·differs·from·a·normal·Erlang | 165 | usage:·factorial·integer</code></pre><p>The·header·of·the·Erlang·script·in·the·example·differs·from·a·normal·Erlang |
| 166 | module.·The·first·line·is·intended·to·be·the·interpreter·line,·which·invokes | 166 | module.·The·first·line·is·intended·to·be·the·interpreter·line,·which·invokes |
| 167 | <code·class="inline">escript</code>.</p><p>However,·if·you·invoke·the·<code·class="inline">escript</code>·as·follows,·the·contents·of·the·first·line | 167 | <code·class="inline">escript</code>.</p><p>However,·if·you·invoke·the·<code·class="inline">escript</code>·as·follows,·the·contents·of·the·first·line |
| 168 | do·not·matter,·but·it·cannot·contain·Erlang·code·as·it·will·be·ignored:</p><pre><code·class="text">$·escript·factorial·5</code></pre><p>The·second·line·in·the·example·contains·an·optional·directive·to·the·<code·class="inline">Emacs</code> | 168 | do·not·matter,·but·it·cannot·contain·Erlang·code·as·it·will·be·ignored:</p><pre><code·class="text">$·escript·factorial·5</code></pre><p>The·second·line·in·the·example·contains·an·optional·directive·to·the·<code·class="inline">Emacs</code> |
| 169 | editor,·which·causes·it·to·enter·the·major·mode·for·editing·Erlang·source·files. | 169 | editor,·which·causes·it·to·enter·the·major·mode·for·editing·Erlang·source·files. |
| 170 | If·the·directive·is·present,·it·must·be·located·on·the·second·line.</p><p>If·a·comment·selecting·the·<a·href="../../../lib/stdlib-6.2.1/doc/html/epp.html#encoding">encoding</a>·exists,·it·can·be | 170 | If·the·directive·is·present,·it·must·be·located·on·the·second·line.</p><p>If·a·comment·selecting·the·<a·href="../../../lib/stdlib-6.2.1/doc/html/epp.html#encoding">encoding</a>·exists,·it·can·be |
| 171 | located·on·the·second·line.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>The·encoding·specified·by·the·above·mentioned·comment·applies·to·the·script | 171 | located·on·the·second·line.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>The·encoding·specified·by·the·above·mentioned·comment·applies·to·the·script |
| 172 | itself.·The·encoding·of·the·I/O-server,·however,·must·be·set·explicitly·as | 172 | itself.·The·encoding·of·the·I/O-server,·however,·must·be·set·explicitly·as |
| 173 | follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">io</span><span·class="p">:</span><span·class="nf">setopts</span><span·class="p"·data-group-id=" | 173 | follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">io</span><span·class="p">:</span><span·class="nf">setopts</span><span·class="p"·data-group-id="9229217754-1">(</span><span·class="p"·data-group-id="9229217754-2">[</span><span·class="p"·data-group-id="9229217754-3">{</span><span·class="ss">encoding</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">latin1</span><span·class="p"·da[·...·truncated·by·diffoscope;·len:·129,·SHA:·3142ef23f7b8cb2920f2743280673eca3ca40e5cf15da7f10c1ff5b468c76207·...·]-1">)</span></code></pre><p>The·default·encoding·of·the·I/O-server·for |
| 174 | <a·href="../../../lib/stdlib-6.2.1/doc/html/io.html#t:standard_io/0"><code·class="inline">standard_io</code></a>·is·<code·class="inline">unicode</code>·if·its·supported.·(see | 174 | <a·href="../../../lib/stdlib-6.2.1/doc/html/io.html#t:standard_io/0"><code·class="inline">standard_io</code></a>·is·<code·class="inline">unicode</code>·if·its·supported.·(see |
| 175 | section | 175 | section |
| 176 | <a·href="../../../lib/stdlib-6.2.1/doc/html/unicode_usage.html#unicode_options_summary">Summary·of·Options</a>)·in | 176 | <a·href="../../../lib/stdlib-6.2.1/doc/html/unicode_usage.html#unicode_options_summary">Summary·of·Options</a>)·in |
| 177 | the·STDLIB·User's·Guide.</p></section><p>On·the·third·line·(or·second·line·depending·on·the·presence·of·the·Emacs | 177 | the·STDLIB·User's·Guide.</p></section><p>On·the·third·line·(or·second·line·depending·on·the·presence·of·the·Emacs |
| 178 | directive),·arguments·can·be·specified·to·the·emulator,·for·example:</p><pre><code·class="text">%%!·-sname·factorial·-mnesia·debug·verbose</code></pre><p>Such·an·argument·line·must·start·with·<code·class="inline">%%!</code>·and·the·remaining·line·is | 178 | directive),·arguments·can·be·specified·to·the·emulator,·for·example:</p><pre><code·class="text">%%!·-sname·factorial·-mnesia·debug·verbose</code></pre><p>Such·an·argument·line·must·start·with·<code·class="inline">%%!</code>·and·the·remaining·line·is |
| 179 | interpreted·as·arguments·to·the·emulator.</p><p>If·you·know·the·location·of·the·<code·class="inline">escript</code>·executable,·the·first·line·can | 179 | interpreted·as·arguments·to·the·emulator.</p><p>If·you·know·the·location·of·the·<code·class="inline">escript</code>·executable,·the·first·line·can |
| 180 | directly·give·the·path·to·<code·class="inline">escript</code>,·for·example:</p><pre><code·class="text">#!/usr/local/bin/escript</code></pre><p>As·any·other·type·of·scripts,·Erlang·scripts·do·not·work·on·Unix·platforms·if | 180 | directly·give·the·path·to·<code·class="inline">escript</code>,·for·example:</p><pre><code·class="text">#!/usr/local/bin/escript</code></pre><p>As·any·other·type·of·scripts,·Erlang·scripts·do·not·work·on·Unix·platforms·if |
| Offset 188, 23 lines modified | Offset 188, 23 lines modified | ||
| 188 | arguments·specified·to·the·script·(not·changed·or·interpreted·in·any·way).</p><p>If·the·<code·class="inline">main/1</code>·function·in·the·script·returns·successfully,·the·exit·status·for | 188 | arguments·specified·to·the·script·(not·changed·or·interpreted·in·any·way).</p><p>If·the·<code·class="inline">main/1</code>·function·in·the·script·returns·successfully,·the·exit·status·for |
| 189 | the·script·is·<code·class="inline">0</code>.·If·an·exception·is·generated·during·execution,·a·short | 189 | the·script·is·<code·class="inline">0</code>.·If·an·exception·is·generated·during·execution,·a·short |
| 190 | message·is·printed·and·the·script·terminates·with·exit·status·<code·class="inline">127</code>.</p><p>To·return·your·own·non-zero·exit·code,·call·<a·href="erlang.html#halt/1"><code·class="inline">halt(ExitCode)</code></a>,·for | 190 | message·is·printed·and·the·script·terminates·with·exit·status·<code·class="inline">127</code>.</p><p>To·return·your·own·non-zero·exit·code,·call·<a·href="erlang.html#halt/1"><code·class="inline">halt(ExitCode)</code></a>,·for |
| 191 | example:</p><pre><code·class="text">halt(1).</code></pre><p>To·retrieve·the·pathname·of·the·script,·call·<a·href="../../../lib/stdlib-6.2.1/doc/html/escript.html#script_name/0"><code·class="inline">escript:script_name/0</code></a>·from·your | 191 | example:</p><pre><code·class="text">halt(1).</code></pre><p>To·retrieve·the·pathname·of·the·script,·call·<a·href="../../../lib/stdlib-6.2.1/doc/html/escript.html#script_name/0"><code·class="inline">escript:script_name/0</code></a>·from·your |
| 192 | script·(the·pathname·is·usually,·but·not·always,·absolute).</p><p>If·the·file·contains·source·code·(as·in·the·example·above),·it·is·processed·by | 192 | script·(the·pathname·is·usually,·but·not·always,·absolute).</p><p>If·the·file·contains·source·code·(as·in·the·example·above),·it·is·processed·by |
| 193 | the·<a·href="../../../lib/stdlib-6.2.1/doc/html/epp.html"><code·class="inline">epp</code></a>·preprocessor.·This·means·that·you,·for·example,·can·use·predefined | 193 | the·<a·href="../../../lib/stdlib-6.2.1/doc/html/epp.html"><code·class="inline">epp</code></a>·preprocessor.·This·means·that·you,·for·example,·can·use·predefined |
| 194 | macros·(such·as·<code·class="inline">?MODULE</code>)·and·include·directives·like·the·<code·class="inline">-include_lib</code> | 194 | macros·(such·as·<code·class="inline">?MODULE</code>)·and·include·directives·like·the·<code·class="inline">-include_lib</code> |
| 195 | directive.·For·example,·use</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id=" | 195 | directive.·For·example,·use</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="3088068639-1">(</span><span·class="s">"kernel/include/file.hrl"</span><span·class="p"·data-group-id="3088068639-1">)</span><span·class="p">.</span></code></pre><p>to·include·the·record·definitions·for·the·records·used·by·function |
| 196 | <a·href="../../../lib/kernel-10.2.3/doc/html/file.html#read_link_info/1"><code·class="inline">file:read_link_info/1</code></a>.·You·can·also·select·encoding·by·including·an·encoding | 196 | <a·href="../../../lib/kernel-10.2.3/doc/html/file.html#read_link_info/1"><code·class="inline">file:read_link_info/1</code></a>.·You·can·also·select·encoding·by·including·an·encoding |
| 197 | comment·here,·but·if·a·valid·encoding·comment·exists·on·the·second·line,·it | 197 | comment·here,·but·if·a·valid·encoding·comment·exists·on·the·second·line,·it |
| 198 | takes·precedence.</p><p>The·script·is·checked·for·syntactic·and·semantic·correctness·before·it·is·run. | 198 | takes·precedence.</p><p>The·script·is·checked·for·syntactic·and·semantic·correctness·before·it·is·run. |
| 199 | If·there·are·warnings·(such·as·unused·variables),·they·are·printed·and·the | 199 | If·there·are·warnings·(such·as·unused·variables),·they·are·printed·and·the |
| 200 | script·will·still·be·run.·If·there·are·errors,·they·are·printed·and·the·script | 200 | script·will·still·be·run.·If·there·are·errors,·they·are·printed·and·the·script |
| 201 | will·not·be·run·and·its·exit·status·is·<code·class="inline">127</code>.</p><p>Both·the·module·declaration·and·the·export·declaration·of·the·<code·class="inline">main/1</code>·function | 201 | will·not·be·run·and·its·exit·status·is·<code·class="inline">127</code>.</p><p>Both·the·module·declaration·and·the·export·declaration·of·the·<code·class="inline">main/1</code>·function |
| 202 | are·optional.</p><p>By·default,·the·script·will·be·compiled·by·the·Erlang·compiler.</p><p>It·is·possible·to·force·it·to·be·interpreted·by·including·the·following·line | 202 | are·optional.</p><p>By·default,·the·script·will·be·compiled·by·the·Erlang·compiler.</p><p>It·is·possible·to·force·it·to·be·interpreted·by·including·the·following·line |
| 203 | somewhere·in·the·script·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">mode</span><span·class="p"·data-group-id=" | 203 | somewhere·in·the·script·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">mode</span><span·class="p"·data-group-id="7764708732-1">(</span><span·class="ss">interpret</span><span·class="p"·data-group-id="7764708732-1">)</span><span·class="p">.</span></code></pre><p>Execution·of·interpreted·code·is·slower·than·compiled·code,·and·some·language |
| 204 | constructs·will·not·work,·but·there·is·no·requirement·for·the·Erlang·compiler | 204 | constructs·will·not·work,·but·there·is·no·requirement·for·the·Erlang·compiler |
| 205 | application·to·be·available.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Change</h4><p>Before·Erlang/OTP·27·the·script·would·be·interpreted·by·default.</p></section><h2·id="precompiled-escripts"·class="section-heading"> | 205 | application·to·be·available.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Change</h4><p>Before·Erlang/OTP·27·the·script·would·be·interpreted·by·default.</p></section><h2·id="precompiled-escripts"·class="section-heading"> |
| 206 | ··<a·href="#precompiled-escripts"·class="hover-link"> | 206 | ··<a·href="#precompiled-escripts"·class="hover-link"> |
| 207 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 207 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 208 | ··</a> | 208 | ··</a> |
| 209 | ··<span·class="text">Precompiled·escripts</span> | 209 | ··<span·class="text">Precompiled·escripts</span> |
| 210 | </h2> | 210 | </h2> |
| Offset 133, 33 lines modified | Offset 133, 33 lines modified | ||
| 133 | </h2> | 133 | </h2> |
| 134 | <p>Each·Erlang·process·has·its·own·stack·and·heap·which·are·allocated·in·the·same·memory·block·and·grow·towards·each·other.·When·the·stack·and·the·heap·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/beam_emu.c#L387">meet</a>,·the·garbage·collector·is·triggered·and·memory·is·reclaimed.·If·not·enough·memory·was·reclaimed,·the·heap·will·grow.</p><h3·id="creating-data"·class="section-heading"> | 134 | <p>Each·Erlang·process·has·its·own·stack·and·heap·which·are·allocated·in·the·same·memory·block·and·grow·towards·each·other.·When·the·stack·and·the·heap·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/beam_emu.c#L387">meet</a>,·the·garbage·collector·is·triggered·and·memory·is·reclaimed.·If·not·enough·memory·was·reclaimed,·the·heap·will·grow.</p><h3·id="creating-data"·class="section-heading"> |
| 135 | ··<a·href="#creating-data"·class="hover-link"> | 135 | ··<a·href="#creating-data"·class="hover-link"> |
| 136 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 136 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 137 | ··</a> | 137 | ··</a> |
| 138 | ··<span·class="text">Creating·Data</span> | 138 | ··<span·class="text">Creating·Data</span> |
| 139 | </h3> | 139 | </h3> |
| 140 | <p>Terms·are·created·on·the·heap·by·evaluating·expressions.·There·are·two·major·types·of·terms:·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_term.h#L88-L97">immediate·terms</a>·which·require·no·heap·space·(small·integers,·atoms,·pids,·port·ids·etc)·and·cons·or·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_term.h#L106-L120">boxed·terms</a>·(tuple,·big·num,·binaries·etc)·that·do·require·heap·space.·Immediate·terms·do·not·need·any·heap·space·because·they·are·embedded·into·the·containing·structure.</p><p>Let's·look·at·an·example·that·returns·a·tuple·with·the·newly·created·data.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">data</span><span·class="p"·data-group-id=" | 140 | <p>Terms·are·created·on·the·heap·by·evaluating·expressions.·There·are·two·major·types·of·terms:·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_term.h#L88-L97">immediate·terms</a>·which·require·no·heap·space·(small·integers,·atoms,·pids,·port·ids·etc)·and·cons·or·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_term.h#L106-L120">boxed·terms</a>·(tuple,·big·num,·binaries·etc)·that·do·require·heap·space.·Immediate·terms·do·not·need·any·heap·space·because·they·are·embedded·into·the·containing·structure.</p><p>Let's·look·at·an·example·that·returns·a·tuple·with·the·newly·created·data.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">data</span><span·class="p"·data-group-id="3400293921-1">(</span><span·class="n">Foo</span><span·class="p"·data-group-id="3400293921-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 141 | ···</span><span·class="n">Cons</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 141 | ···</span><span·class="n">Cons</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="3400293921-2">[</span><span·class="mi">42</span><span·class="p">|</span><span·class="n">Foo</span><span·class="p"·data-group-id="3400293921-2">]</span><span·class="p">,</span><span·class="w"> |
| 142 | ···</span><span·class="n">Literal</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 142 | ···</span><span·class="n">Literal</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="3400293921-3">{</span><span·class="ss">text</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"hello·world!"</span><span·class="p"·data-group-id="3400293921-3">}</span><span·class="p">,</span><span·class="w"> |
| 143 | ···</span><span·class="p"·data-group-id=" | 143 | ···</span><span·class="p"·data-group-id="3400293921-4">{</span><span·class="ss">tag</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cons</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Literal</span><span·class="p"·data-group-id="3400293921-4">}</span><span·class="p">.</span></code></pre><p>In·this·example·we·first·create·a·new·cons·cell·with·an·integer·and·a·tuple·with·some·text.·Then·a·tuple·of·size·three·wrapping·the·other·values·with·an·atom·tag·is·created·and·returned.</p><p>On·the·heap·tuples·require·a·word·size·for·each·of·its·elements·as·well·as·for·the·header.·Cons·cells·always·require·two·words.·Adding·these·things·together,·we·get·seven·words·for·the·tuples·and·26·words·for·the·cons·cells.·The·string·<code·class="inline">"hello·world!"</code>·is·a·list·of·cons·cells·and·thus·requires·24·words.·The·atom·<code·class="inline">tag</code>·and·the·integer·<code·class="inline">42</code>·do·not·require·any·additional·heap·memory·since·it·is·an·<em>immediate</em>.·Adding·all·the·terms·together,·the·heap·space·required·in·this·example·should·be·33·words.</p><p>Compiling·this·code·to·beam·assembly·(<code·class="inline">erlc·-S</code>)·shows·exactly·what·is·happening.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 144 | </span><span·class="p"·data-group-id=" | 144 | </span><span·class="p"·data-group-id="0114190262-1">{</span><span·class="ss">test_heap</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="0114190262-1">}</span><span·class="p">.</span><span·class="w"> |
| 145 | </span><span·class="p"·data-group-id=" | 145 | </span><span·class="p"·data-group-id="0114190262-2">{</span><span·class="ss">put_list</span><span·class="p">,</span><span·class="p"·data-group-id="0114190262-3">{</span><span·class="ss">integer</span><span·class="p">,</span><span·class="mi">42</span><span·class="p"·data-group-id="0114190262-3"[·...·truncated·by·diffoscope;·len:·457,·SHA:·86ae0c120058ef19a9d306524295a2bcceb41479a30295ee2eac22c182ebc058·...·]2-2">}</span><span·class="p">.</span><span·class="w"> |
| 146 | </span><span·class="p"·data-group-id=" | 146 | </span><span·class="p"·data-group-id="0114190262-6">{</span><span·class="ss">put_tuple</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="p"·data-group-id="0114190262-7">{</span><span·class="ss">x</span><span·class="p">,</span><span·class="mi">0</span><[·...·truncated·by·diffoscope;·len:·92,·SHA:·3e1850499e5bbb341ebfaa1364b1924d102c84c13719245a5873843cd5114c93·...·]2-6">}</span><span·class="p">.</span><span·class="w"> |
| 147 | </span><span·class="p"·data-group-id=" | 147 | </span><span·class="p"·data-group-id="0114190262-8">{</span><span·class="nb">put</span><span·class="p">,</span><span·class="p"·data-group-id="0114190262-9">{</span><span·class="ss">atom</span><span·class="p">,</span><span·class="ss">tag</span><span·class="p"·data-group-id="0114190262-9">}</spa[·...·truncated·by·diffoscope;·len:·42,·SHA:·d8ca8ba4805095a33747d41a2f71d1d884a3b9ec7e7adb07ab0972ff0ef48828·...·]2-8">}</span><span·class="p">.</span><span·class="w"> |
| 148 | </span><span·class="p"·data-group-id=" | 148 | </span><span·class="p"·data-group-id="0114190262-10">{</span><span·class="nb">put</span><span·class="p">,</span><span·class="p"·data-group-id="0114190262-11">{</span><span·class="ss">x</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="0114190262-11">}</span>[·...·truncated·by·diffoscope;·len:·40,·SHA:·6ba83e4a94e576bde5f762d0ba3ba0b4c8c3bc9d3e8561c43db7f3b5a433a366·...·]2-10">}</span><span·class="p">.</span><span·class="w"> |
| 149 | </span><span·class="p"·data-group-id=" | 149 | </span><span·class="p"·data-group-id="0114190262-12">{</span><span·class="nb">put</span><span·class="p">,</span><span·class="p"·data-group-id="0114190262-13">{</span><span·class="ss">literal</span><span·class="p">,</span><span·class="p"·data-group-id="0114190262-14">{</span><span·class="ss">te[·...·truncated·by·diffoscope;·len:·228,·SHA:·4bc20621c6770318a452de257a750d541e09e1d76aeac92caa80569d0f7a6d33·...·]2-12">}</span><span·class="p">.</span><span·class="w"> |
| 150 | </span><span·class="ss">return</span><span·class="p">.</span></code></pre><p>Looking·at·the·assembler·code·we·can·see·three·things:·The·heap·requirement·in·this·function·turns·out·to·be·only·six·words,·as·seen·by·the·<code·class="inline">{test_heap,6,1}</code>·instruction.·All·the·allocations·are·combined·to·a·single·instruction.·The·bulk·of·the·data·<code·class="inline">{text,·"hello·world!"}</code>·is·a·<em>literal</em>.·Literals,·sometimes·referred·to·as·constants,·are·not·allocated·in·the·function·since·they·are·a·part·of·the·module·and·allocated·at·load·time.</p><p>If·there·is·not·enough·space·available·on·the·heap·to·satisfy·the·<code·class="inline">test_heap</code>·instructions·request·for·memory,·then·a·garbage·collection·is·initiated.·It·may·happen·immediately·in·the·<code·class="inline">test_heap</code>·instruction,·or·it·can·be·delayed·until·a·later·time·depending·on·what·state·the·process·is·in.·If·the·garbage·collection·is·delayed,·any·memory·needed·will·be·allocated·in·heap·fragments.·Heap·fragments·are·extra·memory·blocks·that·are·a·part·of·the·young·heap,·but·are·not·allocated·in·the·contiguous·area·where·terms·normally·reside.·See·<a·href="#the-young-heap">The·young·heap</a>·for·more·details.</p><h3·id="the-collector"·class="section-heading"> | 150 | </span><span·class="ss">return</span><span·class="p">.</span></code></pre><p>Looking·at·the·assembler·code·we·can·see·three·things:·The·heap·requirement·in·this·function·turns·out·to·be·only·six·words,·as·seen·by·the·<code·class="inline">{test_heap,6,1}</code>·instruction.·All·the·allocations·are·combined·to·a·single·instruction.·The·bulk·of·the·data·<code·class="inline">{text,·"hello·world!"}</code>·is·a·<em>literal</em>.·Literals,·sometimes·referred·to·as·constants,·are·not·allocated·in·the·function·since·they·are·a·part·of·the·module·and·allocated·at·load·time.</p><p>If·there·is·not·enough·space·available·on·the·heap·to·satisfy·the·<code·class="inline">test_heap</code>·instructions·request·for·memory,·then·a·garbage·collection·is·initiated.·It·may·happen·immediately·in·the·<code·class="inline">test_heap</code>·instruction,·or·it·can·be·delayed·until·a·later·time·depending·on·what·state·the·process·is·in.·If·the·garbage·collection·is·delayed,·any·memory·needed·will·be·allocated·in·heap·fragments.·Heap·fragments·are·extra·memory·blocks·that·are·a·part·of·the·young·heap,·but·are·not·allocated·in·the·contiguous·area·where·terms·normally·reside.·See·<a·href="#the-young-heap">The·young·heap</a>·for·more·details.</p><h3·id="the-collector"·class="section-heading"> |
| 151 | ··<a·href="#the-collector"·class="hover-link"> | 151 | ··<a·href="#the-collector"·class="hover-link"> |
| 152 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 152 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 153 | ··</a> | 153 | ··</a> |
| 154 | ··<span·class="text">The·collector</span> | 154 | ··<span·class="text">The·collector</span> |
| 155 | </h3> | 155 | </h3> |
| 156 | <p>Erlang·has·a·copying·semi-space·garbage·collector.·This·means·that·when·doing·a·garbage·collection,·the·terms·are·copied·from·one·distinct·area,·called·the·<em>from·space</em>,·to·a·new·clean·area,·called·the·<em>to·space</em>.·The·collector·starts·by·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L1980">scanning·the·root-set</a>·(stack,·registers,·etc).</p><p><img·src="assets/gc-start.png"·alt="Garbage·collection:·initial·values"/></p><p>It·follows·all·the·pointers·from·the·root-set·to·the·heap·and·copies·each·term·word·by·word·to·the·<em>to·space</em>.</p><p>After·the·header·word·has·been·copied·a·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.h#L45-L46"><em>move·marker</em></a>·is·destructively·placed·in·it·pointing·to·the·term·in·the·<em>to·space</em>.·Any·other·term·that·points·to·the·already·moved·term·will·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L1125">see·this·move·marker</a>·and·copy·the·referring·pointer·instead.·For·example,·if·the·have·the·following·Erlang·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">foo</span><span·class="p"·data-group-id=" | 156 | <p>Erlang·has·a·copying·semi-space·garbage·collector.·This·means·that·when·doing·a·garbage·collection,·the·terms·are·copied·from·one·distinct·area,·called·the·<em>from·space</em>,·to·a·new·clean·area,·called·the·<em>to·space</em>.·The·collector·starts·by·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L1980">scanning·the·root-set</a>·(stack,·registers,·etc).</p><p><img·src="assets/gc-start.png"·alt="Garbage·collection:·initial·values"/></p><p>It·follows·all·the·pointers·from·the·root-set·to·the·heap·and·copies·each·term·word·by·word·to·the·<em>to·space</em>.</p><p>After·the·header·word·has·been·copied·a·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.h#L45-L46"><em>move·marker</em></a>·is·destructively·placed·in·it·pointing·to·the·term·in·the·<em>to·space</em>.·Any·other·term·that·points·to·the·already·moved·term·will·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L1125">see·this·move·marker</a>·and·copy·the·referring·pointer·instead.·For·example,·if·the·have·the·following·Erlang·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">foo</span><span·class="p"·data-group-id="4608831144-1">(</span><span·class="n">Arg</span><span·class="p"·data-group-id="4608831144-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 157 | ····</span><span·class="n">T</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 157 | ····</span><span·class="n">T</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4608831144-2">{</span><span·class="ss">test</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Arg</span><span·class="p"·data-group-id="4608831144-2">}</span><span·class="p">,</span><span·class="w"> |
| 158 | ····</span><span·class="p"·data-group-id=" | 158 | ····</span><span·class="p"·data-group-id="4608831144-3">{</span><span·class="ss">wrapper</span><span·class="p">,</span><span·class="w">·</span><span·class="n">T</span><span·class="p">,</span><span·class="w">·</span><span·class="n">T</span><span·class="p">,</span><span·class="w">·</span><span·class[·...·truncated·by·diffoscope;·len:·54,·SHA:·048f148f5dee9c0929f1c64e446d02a713d8aaf4060679c75721f861eadd60b8·...·]-3">}</span><span·class="p">.</span></code></pre><p>Only·one·copy·of·T·exists·on·the·heap·and·during·the·garbage·collection·only·the·first·time·T·is·encountered·will·it·be·copied.</p><p><img·src="assets/gc-rootset-scan.png"·alt="Garbage·collection:·root·set·scan"/></p><p>After·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L1089">all·terms</a>·referenced·by·the·root-set·have·been·copied,·the·collector·scans·the·<em>to·space</em>·and·copies·all·terms·that·these·terms·reference.·When·scanning,·the·collector·steps·through·each·term·on·the·<em>to·space</em>·and·any·term·still·referencing·the·<em>from·space</em>·is·copied·over·to·the·<em>to·space</em>.·Some·terms·contain·non-term·data·(the·payload·of·a·on·heap·binary·for·instance).·When·encountered·by·the·collector,·these·values·are·simply·skipped.</p><p><img·src="assets/gc-heap-scan1.png"·alt="Garbage·collection:·heap·scan"/></p><p>Every·term·object·we·can·reach·is·copied·to·the·<em>to·space</em>·and·stored·on·top·off·the·<em>scan·stop</em>·line,·and·then·the·scan·stop·is·moved·to·the·end·of·the·last·object.</p><p><img·src="assets/gc-heap-stop.png"·alt="Garbage·collection:·heap·scan"/></p><p>When·<em>scan·stop</em>·marker·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L1103">catches·up</a>·to·the·<em>scan·start</em>·marker,·the·garbage·collection·is·done.·At·this·point·we·can·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L1206">deallocate</a>·the·entire·<em>from·space</em>·and·therefore·reclaim·the·entire·young·heap.</p><h2·id="generational-garbage-collection"·class="section-heading"> |
| 159 | ··<a·href="#generational-garbage-collection"·class="hover-link"> | 159 | ··<a·href="#generational-garbage-collection"·class="hover-link"> |
| 160 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 160 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 161 | ··</a> | 161 | ··</a> |
| 162 | ··<span·class="text">Generational·Garbage·Collection</span> | 162 | ··<span·class="text">Generational·Garbage·Collection</span> |
| 163 | </h2> | 163 | </h2> |
| 164 | <p>In·addition·to·the·collection·algorithm·described·above,·the·Erlang·garbage·collector·also·provides·generational·garbage·collection.·An·additional·heap,·called·the·old·heap,·is·used·where·the·long·lived·data·is·stored.·The·original·heap·is·called·the·young·heap,·or·sometimes·the·allocation·heap.</p><p>With·this·in·mind·we·can·look·at·the·Erlang's·garbage·collection·again.·During·the·copy·stage·anything·that·should·be·copied·to·the·young·<em>to·space</em>·is·instead·copied·to·the·old·<em>to·space</em>·<em>if</em>·it·is·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L1127">below·the·<em>high-watermark</em></a>.</p><p><img·src="assets/gc-watermark.png"·alt="Garbage·collection:·heap·scan"/></p><p>The·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_process.h#L1021"><em>high-watermark</em></a>·is·placed·where·the·previous·garbage·collection·(described·in·<a·href="#overview">Overview</a>)·ended·and·we·have·introduced·a·new·area·called·the·old·heap.·When·doing·the·normal·garbage·collection·pass,·any·term·that·is·located·below·the·high-watermark·is·copied·to·the·old·<em>to·space</em>·instead·of·the·young.</p><p><img·src="assets/gc-watermark-2.png"·alt="Garbage·collection:·heap·scan"/></p><p>In·the·next·garbage·collection,·any·pointers·to·the·old·heap·will·be·ignored·and·not·scanned.·This·way·the·garbage·collector·does·not·have·to·scan·the·long-lived·terms.</p><p>Generational·garbage·collection·aims·to·increase·performance·at·the·expense·of·memory.·This·is·achieved·because·only·the·young,·smaller,·heap·is·considered·in·most·garbage·collections.</p><p>The·generational·hypothesis·predicts·that·most·terms·tend·to·die·young·(see·D.·Ungar·in·<a·href="#references">References</a>),·and·for·an·immutable·language·such·as·Erlang,·young·terms·die·even·faster·than·in·other·languages.·So·for·most·usage·patterns·the·data·in·the·new·heap·will·die·very·soon·after·it·is·allocated.·This·is·good·because·it·limits·the·amount·of·data·copied·to·the·old·heap·and·also·because·the·garbage·collection·algorithm·used·is·proportional·to·the·amount·of·live·data·on·the·heap.</p><p>One·critical·issue·to·note·here·is·that·any·term·on·the·young·heap·can·reference·terms·on·the·old·heap·but·<em>no</em>·term·on·the·old·heap·may·refer·to·a·term·on·the·young·heap.·This·is·due·to·the·nature·of·the·copy·algorithm.·Anything·referenced·by·an·old·heap·term·is·not·included·in·the·reference·tree,·root-set·and·its·followers,·and·hence·is·not·copied.·If·it·was,·the·data·would·be·lost,·fire·and·brimstone·would·rise·to·cover·the·earth.·Fortunately,·this·comes·naturally·for·Erlang·because·the·terms·are·immutable·and·thus·there·can·be·no·pointers·modified·on·the·old·heap·to·point·to·the·young·heap.</p><p>To·reclaim·data·from·the·old·heap,·both·young·and·old·heaps·are·included·during·the·collection·and·copied·to·a·common·<em>to·space</em>.·Both·the·<em>from·space</em>·of·the·young·and·old·heap·are·then·deallocated·and·the·procedure·will·start·over·from·the·beginning.·This·type·of·garbage·collection·is·called·a·full·sweep·and·is·triggered·when·the·size·of·the·area·under·the·high-watermark·is·larger·than·the·size·of·the·free·area·of·the·old·heap.·It·can·also·be·triggered·by·doing·a·manual·call·to·<a·href="http://erlang.org/doc/man/erlang.html#garbage_collect-0">erlang:garbage_collect()</a>,·or·by·running·into·the·young·garbage·collection·limit·set·by·[spawn_opt(fun(),<a·href="http://erlang.org/doc/man/erlang.html#spawn_opt-4">{fullsweep_after,·N}])</a>·where·N·is·the·number·of·young·garbage·collections·to·do·before·forcing·a·garbage·collection·of·both·young·and·old·heap.</p><h2·id="the-young-heap"·class="section-heading"> | 164 | <p>In·addition·to·the·collection·algorithm·described·above,·the·Erlang·garbage·collector·also·provides·generational·garbage·collection.·An·additional·heap,·called·the·old·heap,·is·used·where·the·long·lived·data·is·stored.·The·original·heap·is·called·the·young·heap,·or·sometimes·the·allocation·heap.</p><p>With·this·in·mind·we·can·look·at·the·Erlang's·garbage·collection·again.·During·the·copy·stage·anything·that·should·be·copied·to·the·young·<em>to·space</em>·is·instead·copied·to·the·old·<em>to·space</em>·<em>if</em>·it·is·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L1127">below·the·<em>high-watermark</em></a>.</p><p><img·src="assets/gc-watermark.png"·alt="Garbage·collection:·heap·scan"/></p><p>The·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_process.h#L1021"><em>high-watermark</em></a>·is·placed·where·the·previous·garbage·collection·(described·in·<a·href="#overview">Overview</a>)·ended·and·we·have·introduced·a·new·area·called·the·old·heap.·When·doing·the·normal·garbage·collection·pass,·any·term·that·is·located·below·the·high-watermark·is·copied·to·the·old·<em>to·space</em>·instead·of·the·young.</p><p><img·src="assets/gc-watermark-2.png"·alt="Garbage·collection:·heap·scan"/></p><p>In·the·next·garbage·collection,·any·pointers·to·the·old·heap·will·be·ignored·and·not·scanned.·This·way·the·garbage·collector·does·not·have·to·scan·the·long-lived·terms.</p><p>Generational·garbage·collection·aims·to·increase·performance·at·the·expense·of·memory.·This·is·achieved·because·only·the·young,·smaller,·heap·is·considered·in·most·garbage·collections.</p><p>The·generational·hypothesis·predicts·that·most·terms·tend·to·die·young·(see·D.·Ungar·in·<a·href="#references">References</a>),·and·for·an·immutable·language·such·as·Erlang,·young·terms·die·even·faster·than·in·other·languages.·So·for·most·usage·patterns·the·data·in·the·new·heap·will·die·very·soon·after·it·is·allocated.·This·is·good·because·it·limits·the·amount·of·data·copied·to·the·old·heap·and·also·because·the·garbage·collection·algorithm·used·is·proportional·to·the·amount·of·live·data·on·the·heap.</p><p>One·critical·issue·to·note·here·is·that·any·term·on·the·young·heap·can·reference·terms·on·the·old·heap·but·<em>no</em>·term·on·the·old·heap·may·refer·to·a·term·on·the·young·heap.·This·is·due·to·the·nature·of·the·copy·algorithm.·Anything·referenced·by·an·old·heap·term·is·not·included·in·the·reference·tree,·root-set·and·its·followers,·and·hence·is·not·copied.·If·it·was,·the·data·would·be·lost,·fire·and·brimstone·would·rise·to·cover·the·earth.·Fortunately,·this·comes·naturally·for·Erlang·because·the·terms·are·immutable·and·thus·there·can·be·no·pointers·modified·on·the·old·heap·to·point·to·the·young·heap.</p><p>To·reclaim·data·from·the·old·heap,·both·young·and·old·heaps·are·included·during·the·collection·and·copied·to·a·common·<em>to·space</em>.·Both·the·<em>from·space</em>·of·the·young·and·old·heap·are·then·deallocated·and·the·procedure·will·start·over·from·the·beginning.·This·type·of·garbage·collection·is·called·a·full·sweep·and·is·triggered·when·the·size·of·the·area·under·the·high-watermark·is·larger·than·the·size·of·the·free·area·of·the·old·heap.·It·can·also·be·triggered·by·doing·a·manual·call·to·<a·href="http://erlang.org/doc/man/erlang.html#garbage_collect-0">erlang:garbage_collect()</a>,·or·by·running·into·the·young·garbage·collection·limit·set·by·[spawn_opt(fun(),<a·href="http://erlang.org/doc/man/erlang.html#spawn_opt-4">{fullsweep_after,·N}])</a>·where·N·is·the·number·of·young·garbage·collections·to·do·before·forcing·a·garbage·collection·of·both·young·and·old·heap.</p><h2·id="the-young-heap"·class="section-heading"> |
| 165 | ··<a·href="#the-young-heap"·class="hover-link"> | 165 | ··<a·href="#the-young-heap"·class="hover-link"> |
| Offset 175, 19 lines modified | Offset 175, 19 lines modified | ||
| 175 | </h2> | 175 | </h2> |
| 176 | <p>As·mentioned·in·the·Overview·the·size·of·the·heap·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L247">grows</a>·to·accommodate·more·data.·Heaps·grow·in·two·stages,·first·a·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L199-L208">variation·of·the·Fibonacci·sequence</a>·is·used·starting·at·233·words.·Then·at·about·1·mega·words·the·heap·only·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L215-L227">grows·in·20%·increments</a>.</p><p>There·are·two·occasions·when·the·young·heap·grows:</p><ul><li>if·the·total·size·of·the·heap·+·message·and·heap·fragments·exceeds·the·current·heap·size.</li><li>if·after·a·fullsweep,·the·total·amount·of·live·objects·is·greater·than·75%.</li></ul><p>There·are·two·occasions·when·the·young·heap·is·shrunk:</p><ul><li>if·after·a·young·collection,·the·total·amount·of·live·objects·is·less·than·25%·of·the·heap·and·the·young·heap·is·"big"</li><li>if·after·a·fullsweep,·the·total·amount·of·live·objects·is·less·than·25%·of·the·heap.</li></ul><p>The·old·heap·is·always·one·step·ahead·in·the·heap·growth·stages·than·the·young·heap.</p><h2·id="literals"·class="section-heading"> | 176 | <p>As·mentioned·in·the·Overview·the·size·of·the·heap·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L247">grows</a>·to·accommodate·more·data.·Heaps·grow·in·two·stages,·first·a·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L199-L208">variation·of·the·Fibonacci·sequence</a>·is·used·starting·at·233·words.·Then·at·about·1·mega·words·the·heap·only·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L215-L227">grows·in·20%·increments</a>.</p><p>There·are·two·occasions·when·the·young·heap·grows:</p><ul><li>if·the·total·size·of·the·heap·+·message·and·heap·fragments·exceeds·the·current·heap·size.</li><li>if·after·a·fullsweep,·the·total·amount·of·live·objects·is·greater·than·75%.</li></ul><p>There·are·two·occasions·when·the·young·heap·is·shrunk:</p><ul><li>if·after·a·young·collection,·the·total·amount·of·live·objects·is·less·than·25%·of·the·heap·and·the·young·heap·is·"big"</li><li>if·after·a·fullsweep,·the·total·amount·of·live·objects·is·less·than·25%·of·the·heap.</li></ul><p>The·old·heap·is·always·one·step·ahead·in·the·heap·growth·stages·than·the·young·heap.</p><h2·id="literals"·class="section-heading"> |
| 177 | ··<a·href="#literals"·class="hover-link"> | 177 | ··<a·href="#literals"·class="hover-link"> |
| 178 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 178 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 179 | ··</a> | 179 | ··</a> |
| 180 | ··<span·class="text">Literals</span> | 180 | ··<span·class="text">Literals</span> |
| 181 | </h2> | 181 | </h2> |
| 182 | <p>When·garbage·collecting·a·heap·(young·or·old)·all·literals·are·left·in·place·and·not·copied.·To·figure·out·if·a·term·should·be·copied·or·not·when·doing·a·garbage·collection·the·following·pseudo·code·is·used:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">if</span><span·class="w">·</span><span·class="p"·data-group-id=" | 182 | <p>When·garbage·collecting·a·heap·(young·or·old)·all·literals·are·left·in·place·and·not·copied.·To·figure·out·if·a·term·should·be·copied·or·not·when·doing·a·garbage·collection·the·following·pseudo·code·is·used:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">if</span><span·class="w">·</span><span·class="p"·data-group-id="2056202677-1">(</span><span·class="nf">erts_is_literal</span><span·class="p"·data-group-id="2056202677-2">(</span><span·class="ss">ptr</span><span·class="p"·data-group-id="2056202677-2">)</span><span·class="w">·</span><span·class="p">||</span><span·class="[·...·truncated·by·diffoscope;·len:·541,·SHA:·b0b3045994df754606fb535a62753f29921c4c23dd153cb3c3ac2bddc71cd8b5·...·]-5">{</span><span·class="w"> |
| 183 | ··</span><span·class="o">/</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">literal</span><span·class="w">·</span><span·class="ow">or</span><span·class="w">·</span><span·class="ss">non</span><span·class="w">·</span><span·class="ss">fullsweep</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="ss">do</span><span·class="w">·</span><span·class="ow">not</span><span·class="w">·</span><span·class="ss">copy</span><span·class="w">·</span><span·class="o">*</span><span·class="o">/</span><span·class="w"> | 183 | ··</span><span·class="o">/</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">literal</span><span·class="w">·</span><span·class="ow">or</span><span·class="w">·</span><span·class="ss">non</span><span·class="w">·</span><span·class="ss">fullsweep</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="ss">do</span><span·class="w">·</span><span·class="ow">not</span><span·class="w">·</span><span·class="ss">copy</span><span·class="w">·</span><span·class="o">*</span><span·class="o">/</span><span·class="w"> |
| 184 | </span><span·class="p"·data-group-id=" | 184 | </span><span·class="p"·data-group-id="2056202677-5">}</span><span·class="w">·</span><span·class="k">else</span><span·class="w">·</span><span·class="p"·data-group-id="2056202677-6">{</span><span·class="w"> |
| 185 | ··</span><span·class="nf">copy</span><span·class="p"·data-group-id=" | 185 | ··</span><span·class="nf">copy</span><span·class="p"·data-group-id="2056202677-7">(</span><span·class="ss">ptr</span><span·class="p"·data-group-id="2056202677-7">)</span><span·class="p">;</span><span·class="w"> |
| 186 | </span><span·class="p"·data-group-id=" | 186 | </span><span·class="p"·data-group-id="2056202677-6">}</span></code></pre><p>The·<a·href="https://github.com/erlang/otp/blob/OTP-19.0/erts/emulator/beam/global.h#L1452-L1465"><code·class="inline">erts_is_literal</code></a>·check·works·differently·on·different·architectures·and·operating·systems.</p><p>On·64·bit·systems·that·allow·mapping·of·unreserved·virtual·memory·areas·(most·operating·systems·except·Windows),·an·area·of·size·1·GB·(by·default)·is·mapped·and·then·all·literals·are·placed·within·that·area.·Then·all·that·has·to·be·done·to·determine·if·something·is·a·literal·or·not·is·<a·href="https://github.com/erlang/otp/blob/OTP-19.0/erts/emulator/beam/erl_alloc.h#L322-L324">two·quick·pointer·checks</a>.·This·system·relies·on·the·fact·that·a·memory·page·that·has·not·been·touched·yet·does·not·take·any·actual·space.·So·even·if·1·GB·of·virtual·memory·is·mapped,·only·the·memory·which·is·actually·needed·for·literals·is·allocated·in·ram.·The·size·of·the·literal·area·is·configurable·through·the·+MIscs·erts_alloc·option.</p><p>On·32·bit·systems,·there·is·not·enough·virtual·memory·space·to·allocate·1·GB·for·just·literals,·so·instead·small·256·KB·sized·literal·regions·are·created·on·demand·and·a·card·mark·bit-array·of·the·entire·32·bit·memory·space·is·then·used·to·determine·if·a·term·is·a·literal·or·not.·Since·the·total·memory·space·is·only·32·bits,·the·card·mark·bit-array·is·only·256·words·large.·On·a·64·bit·system·the·same·bit-array·would·have·to·be·1·tera·words·large,·so·this·technique·is·only·viable·on·32·bit·systems.·Doing·<a·href="https://github.com/erlang/otp/blob/OTP-19.0/erts/emulator/beam/erl_alloc.h#L316-L319">lookups·in·the·array</a>·is·a·little·more·expensive·then·just·doing·the·pointer·checks·that·can·be·done·in·64·bit·systems,·but·not·extremely·so.</p><p>On·64·bit·windows,·on·which·erts_alloc·cannot·do·unreserved·virtual·memory·mappings,·a·<a·href="https://github.com/erlang/otp/blob/OTP-19.0/erts/emulator/beam/erl_term.h#L59">special·tag</a>·within·the·Erlang·term·object·is·used·to·determine·if·something·<a·href="https://github.com/erlang/otp/blob/OTP-19.0/erts/emulator/beam/erl_term.h#L248-L252">is·a·literal·or·not</a>.·This·is·very·cheap,·however,·the·tag·is·only·available·on·64·bit·machines,·and·it·is·possible·to·do·a·great·deal·of·other·nice·optimizations·with·this·tag·in·the·future·(like·for·instance·a·more·compact·list·implementation)·so·it·is·not·used·on·operating·systems·where·it·is·not·needed.</p><p>This·behaviour·is·different·from·how·it·worked·prior·to·Erlang/OTP·19.0.·Before·19.0·the·literal·check·was·done·by·checking·if·the·pointer·pointed·to·the·young·or·old·heap·block.·If·it·did·not,·then·it·was·considered·a·literal.·This·lead·to·considerable·overhead·and·strange·memory·usage·scenarios,·so·it·was·removed·in·19.0.</p><h2·id="binary-heap"·class="section-heading"> |
| 187 | ··<a·href="#binary-heap"·class="hover-link"> | 187 | ··<a·href="#binary-heap"·class="hover-link"> |
| 188 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 188 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 189 | ··</a> | 189 | ··</a> |
| 190 | ··<span·class="text">Binary·heap</span> | 190 | ··<span·class="text">Binary·heap</span> |
| 191 | </h2> | 191 | </h2> |
| 192 | <p>The·binary·heap·works·as·a·large·object·space·for·binary·terms·that·are·greater·than·64·bytes·(from·now·on·called·off-heap·binaries).·The·binary·heap·is·<a·href="https://en.wikipedia.org/wiki/Reference_counting">reference·counted</a>·and·a·pointer·to·the·off-heap·binary·is·stored·on·the·process·heap.·To·keep·track·of·when·to·decrement·the·reference·counter·of·the·off-heap·binary,·a·linked·list·(the·MSO·-·mark·and·sweep·object·list)·containing·funs·and·externals·as·well·as·off-heap·binaries·is·woven·through·the·heap.·After·a·garbage·collection·is·done,·the·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L2299">MSO·list·is·swept</a>·and·any·off-heap·binary·that·does·not·have·a·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L2325">move·marker</a>·written·into·the·header·words·has·its·reference·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L2344-L2367">decremented·and·is·potentially·freed</a>.</p><p>All·items·in·the·MSO·list·are·ordered·by·the·time·they·were·added·to·the·process·heap,·so·when·doing·a·minor·garbage·collection,·the·MSO·sweeper·only·has·to·sweep·until·it·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L2369">encounters·an·off-heap·binary·that·is·on·the·old·heap</a>.</p><h3·id="virtual-binary-heap"·class="section-heading"> | 192 | <p>The·binary·heap·works·as·a·large·object·space·for·binary·terms·that·are·greater·than·64·bytes·(from·now·on·called·off-heap·binaries).·The·binary·heap·is·<a·href="https://en.wikipedia.org/wiki/Reference_counting">reference·counted</a>·and·a·pointer·to·the·off-heap·binary·is·stored·on·the·process·heap.·To·keep·track·of·when·to·decrement·the·reference·counter·of·the·off-heap·binary,·a·linked·list·(the·MSO·-·mark·and·sweep·object·list)·containing·funs·and·externals·as·well·as·off-heap·binaries·is·woven·through·the·heap.·After·a·garbage·collection·is·done,·the·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L2299">MSO·list·is·swept</a>·and·any·off-heap·binary·that·does·not·have·a·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L2325">move·marker</a>·written·into·the·header·words·has·its·reference·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L2344-L2367">decremented·and·is·potentially·freed</a>.</p><p>All·items·in·the·MSO·list·are·ordered·by·the·time·they·were·added·to·the·process·heap,·so·when·doing·a·minor·garbage·collection,·the·MSO·sweeper·only·has·to·sweep·until·it·<a·href="https://github.com/erlang/otp/blob/OTP-18.0/erts/emulator/beam/erl_gc.c#L2369">encounters·an·off-heap·binary·that·is·on·the·old·heap</a>.</p><h3·id="virtual-binary-heap"·class="section-heading"> |
| 193 | ··<a·href="#virtual-binary-heap"·class="hover-link"> | 193 | ··<a·href="#virtual-binary-heap"·class="hover-link"> |
| Offset 161, 108 lines modified | Offset 161, 108 lines modified | ||
| 161 | configuration·files·(or·system·registry):</p><ul><li>Hostnames·and·host·addresses</li><li>Domain·name</li><li>Nameservers</li><li>Search·domains</li><li>Lookup·method</li></ul><p>This·data·can·also·be·specified·explicitly·in·the·user·configuration·file.·This | 161 | configuration·files·(or·system·registry):</p><ul><li>Hostnames·and·host·addresses</li><li>Domain·name</li><li>Nameservers</li><li>Search·domains</li><li>Lookup·method</li></ul><p>This·data·can·also·be·specified·explicitly·in·the·user·configuration·file.·This |
| 162 | file·is·to·contain·lines·of·configuration·parameters·(each·terminated·with·a | 162 | file·is·to·contain·lines·of·configuration·parameters·(each·terminated·with·a |
| 163 | full·stop).·Some·parameters·add·data·to·the·configuration·(such·as·host·and | 163 | full·stop).·Some·parameters·add·data·to·the·configuration·(such·as·host·and |
| 164 | nameserver),·others·overwrite·any·previous·settings·(such·as·domain·and·lookup). | 164 | nameserver),·others·overwrite·any·previous·settings·(such·as·domain·and·lookup). |
| 165 | The·user·configuration·file·is·always·examined·last·in·the·configuration | 165 | The·user·configuration·file·is·always·examined·last·in·the·configuration |
| 166 | process,·making·it·possible·for·the·user·to·override·any·default·values·or | 166 | process,·making·it·possible·for·the·user·to·override·any·default·values·or |
| 167 | previously·made·settings.·Call·<code·class="inline">inet:get_rc()</code>·to·view·the·state·of·the·<code·class="inline">inet</code> | 167 | previously·made·settings.·Call·<code·class="inline">inet:get_rc()</code>·to·view·the·state·of·the·<code·class="inline">inet</code> |
| 168 | configuration·database.</p><p>The·valid·configuration·parameters·are·as·follows:</p><ul><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 168 | configuration·database.</p><p>The·valid·configuration·parameters·are·as·follows:</p><ul><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="6119145235-1">{</span><span·class="ss">file</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Format</span><span·class="p">,</span><span·class="w">·</span><span·class="n">File</span><span·class="p"·data-group-id="6119145235-1">}</span><span·class="p">.</span><span·class="w"> |
| 169 | ··</span><span·class="n">Format</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id=" | 169 | ··</span><span·class="n">Format</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="6119145235-2">(</span><span·class="p"·data-group-id="6119145235-2">)</span><span·class="w"> |
| 170 | ··</span><span·class="n">File</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">string</span><span·class="p"·data-group-id=" | 170 | ··</span><span·class="n">File</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">string</span><span·class="p"·data-group-id="6119145235-3">(</span><span·class="p"·data-group-id="6119145235-3">)</span></code></pre><p>Specify·a·system·file·that·Erlang·is·to·read·configuration·data·from.·<code·class="inline">Format</code> |
| 171 | tells·the·parser·how·the·file·is·to·be·interpreted:</p><ul><li><code·class="inline">resolv</code>·(Unix·resolv.conf)</li><li><code·class="inline">host_conf_freebsd</code>·(FreeBSD·host.conf)</li><li><code·class="inline">host_conf_bsdos</code>·(BSDOS·host.conf)</li><li><code·class="inline">host_conf_linux</code>·(Linux·host.conf)</li><li><code·class="inline">nsswitch_conf</code>·(Unix·nsswitch.conf)</li><li><code·class="inline">hosts</code>·(Unix·hosts)</li></ul><p><code·class="inline">File</code>·is·to·specify·the·filename·with·full·path.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 171 | tells·the·parser·how·the·file·is·to·be·interpreted:</p><ul><li><code·class="inline">resolv</code>·(Unix·resolv.conf)</li><li><code·class="inline">host_conf_freebsd</code>·(FreeBSD·host.conf)</li><li><code·class="inline">host_conf_bsdos</code>·(BSDOS·host.conf)</li><li><code·class="inline">host_conf_linux</code>·(Linux·host.conf)</li><li><code·class="inline">nsswitch_conf</code>·(Unix·nsswitch.conf)</li><li><code·class="inline">hosts</code>·(Unix·hosts)</li></ul><p><code·class="inline">File</code>·is·to·specify·the·filename·with·full·path.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="4395894275-1">{</span><span·class="ss">resolv_conf</span><span·class="p">,</span><span·class="w">·</span><span·class="n">File</span><span·class="p"·data-group-id="4395894275-1">}</span><span·class="p">.</span><span·class="w"> |
| 172 | ··</span><span·class="n">File</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">string</span><span·class="p"·data-group-id=" | 172 | ··</span><span·class="n">File</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">string</span><span·class="p"·data-group-id="4395894275-2">(</span><span·class="p"·data-group-id="4395894275-2">)</span></code></pre><p>Specify·a·system·file·that·Erlang·is·to·read·resolver·configuration·from·for |
| 173 | the·internal·DNS·client·<a·href="../../../lib/kernel-10.2.3/doc/html/inet_res.html"><code·class="inline">inet_res</code></a>,·and·monitor·for·changes,·even·if·it·does | 173 | the·internal·DNS·client·<a·href="../../../lib/kernel-10.2.3/doc/html/inet_res.html"><code·class="inline">inet_res</code></a>,·and·monitor·for·changes,·even·if·it·does |
| 174 | not·exist.·The·path·must·be·absolute.</p><p>This·can·override·the·configuration·parameters·<code·class="inline">nameserver</code>·and·<code·class="inline">search</code> | 174 | not·exist.·The·path·must·be·absolute.</p><p>This·can·override·the·configuration·parameters·<code·class="inline">nameserver</code>·and·<code·class="inline">search</code> |
| 175 | depending·on·the·contents·of·the·specified·file.·They·can·also·change·any·time | 175 | depending·on·the·contents·of·the·specified·file.·They·can·also·change·any·time |
| 176 | in·the·future·reflecting·the·file·contents.</p><p>If·the·file·is·specified·as·an·empty·string·<code·class="inline">""</code>,·no·file·is·read·or·monitored | 176 | in·the·future·reflecting·the·file·contents.</p><p>If·the·file·is·specified·as·an·empty·string·<code·class="inline">""</code>,·no·file·is·read·or·monitored |
| 177 | in·the·future.·This·emulates·the·old·behavior·of·not·configuring·the·DNS | 177 | in·the·future.·This·emulates·the·old·behavior·of·not·configuring·the·DNS |
| 178 | client·when·the·node·is·started·in·short·name·distributed·mode.</p><p>If·this·parameter·is·not·specified,·it·defaults·to·<code·class="inline">/etc/resolv.conf</code>·unless | 178 | client·when·the·node·is·started·in·short·name·distributed·mode.</p><p>If·this·parameter·is·not·specified,·it·defaults·to·<code·class="inline">/etc/resolv.conf</code>·unless |
| 179 | environment·variable·<code·class="inline">ERL_INET_ETC_DIR</code>·is·set,·which·defines·the·directory | 179 | environment·variable·<code·class="inline">ERL_INET_ETC_DIR</code>·is·set,·which·defines·the·directory |
| 180 | for·this·file·to·some·maybe·other·than·<code·class="inline">/etc</code>.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 180 | for·this·file·to·some·maybe·other·than·<code·class="inline">/etc</code>.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="6391052170-1">{</span><span·class="ss">hosts_file</span><span·class="p">,</span><span·class="w">·</span><span·class="n">File</span><span·class="p"·data-group-id="6391052170-1">}</span><span·class="p">.</span><span·class="w"> |
| 181 | ··</span><span·class="n">File</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">string</span><span·class="p"·data-group-id=" | 181 | ··</span><span·class="n">File</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">string</span><span·class="p"·data-group-id="6391052170-2">(</span><span·class="p"·data-group-id="6391052170-2">)</span></code></pre><p>Specify·a·system·file·that·Erlang·is·to·read·resolver·configuration·from·for |
| 182 | the·internal·hosts·file·resolver,·and·monitor·for·changes,·even·if·it·does·not | 182 | the·internal·hosts·file·resolver,·and·monitor·for·changes,·even·if·it·does·not |
| 183 | exist.·The·path·must·be·absolute.</p><p>These·host·entries·are·searched·after·all·added·with·<code·class="inline">{file,·hosts,·File}</code> | 183 | exist.·The·path·must·be·absolute.</p><p>These·host·entries·are·searched·after·all·added·with·<code·class="inline">{file,·hosts,·File}</code> |
| 184 | above·or·<code·class="inline">{host,·IP,·Aliases}</code>·below·when·lookup·option·<code·class="inline">file</code>·is·used.</p><p>If·the·file·is·specified·as·an·empty·string·<code·class="inline">""</code>,·no·file·is·read·or·monitored | 184 | above·or·<code·class="inline">{host,·IP,·Aliases}</code>·below·when·lookup·option·<code·class="inline">file</code>·is·used.</p><p>If·the·file·is·specified·as·an·empty·string·<code·class="inline">""</code>,·no·file·is·read·or·monitored |
| 185 | in·the·future.·This·emulates·the·old·behavior·of·not·configuring·the·DNS | 185 | in·the·future.·This·emulates·the·old·behavior·of·not·configuring·the·DNS |
| 186 | client·when·the·node·is·started·in·short·name·distributed·mode.</p><p>If·this·parameter·is·not·specified,·it·defaults·to·<code·class="inline">/etc/hosts</code>·unless | 186 | client·when·the·node·is·started·in·short·name·distributed·mode.</p><p>If·this·parameter·is·not·specified,·it·defaults·to·<code·class="inline">/etc/hosts</code>·unless |
| 187 | environment·variable·<code·class="inline">ERL_INET_ETC_DIR</code>·is·set,·which·defines·the·directory | 187 | environment·variable·<code·class="inline">ERL_INET_ETC_DIR</code>·is·set,·which·defines·the·directory |
| 188 | for·this·file·to·some·maybe·other·than·<code·class="inline">/etc</code>.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 188 | for·this·file·to·some·maybe·other·than·<code·class="inline">/etc</code>.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="3704084136-1">{</span><span·class="ss">registry</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Type</span><span·class="p"·data-group-id="3704084136-1">}</span><span·class="p">.</span><span·class="w"> |
| 189 | ··</span><span·class="n">Type</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id=" | 189 | ··</span><span·class="n">Type</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="3704084136-2">(</span><span·class="p"·data-group-id="3704084136-2">)</span></code></pre><p>Specify·a·system·registry·that·Erlang·is·to·read·configuration·data·from. |
| 190 | <code·class="inline">win32</code>·is·the·only·valid·option.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 190 | <code·class="inline">win32</code>·is·the·only·valid·option.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="5322247140-1">{</span><span·class="ss">host</span><span·class="p">,</span><span·class="w">·</span><span·class="n">IP</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Aliases</span><span·class="p"·data-group-id="5322247140-1">}</span><span·class="p">.</span><span·class="w"> |
| 191 | ··</span><span·class="n">IP</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">tuple</span><span·class="p"·data-group-id=" | 191 | ··</span><span·class="n">IP</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">tuple</span><span·class="p"·data-group-id="5322247140-2">(</span><span·class="p"·data-group-id="5322247140-2">)</span></code></pre><p><code·class="inline">Aliases·=·[string()]</code></p><p>Add·host·entry·to·the·hosts·table.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"[·...·truncated·by·diffoscope;·len:·186,·SHA:·bb19179f79686398e3612b481347a37324e852aad833aa3cd80e5698ee6878ec·...·]-1">}</span><span·class="p">.</span><span·class="w"> |
| 192 | ··</span><span·class="n">Domain</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">string</span><span·class="p"·data-group-id=" | 192 | ··</span><span·class="n">Domain</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">string</span><span·class="p"·data-group-id="4675562574-2">(</span><span·class="p"·data-group-id="4675562574-2">)</span></code></pre><p>Set·domain·name.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="9033345725-1">{</span><span·class="ss">nameserver</span><[·...·truncated·by·diffoscope;·len:·294,·SHA:·0b3e0f3b472fca3f9104e837fccc3ac44a42609e5dec91c37b141efe404bfafa·...·]-1">}</span><span·class="p">.</span><span·class="w"> |
| 193 | ··</span><span·class="n">IP</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">tuple</span><span·class="p"·data-group-id=" | 193 | ··</span><span·class="n">IP</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">tuple</span><span·class="p"·data-group-id="9033345725-3">(</span><span·class="p"·data-group-id="9033345725-3">)</span><span·class="w"> |
| 194 | ··</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id=" | 194 | ··</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="9033345725-4">(</span><span·class="p"·data-group-id="9033345725-4">)</span></code></pre><p>Add·address·(and·port,·if·other·than·default)·of·the·primary·nameserver·to·use |
| 195 | for·<a·href="../../../lib/kernel-10.2.3/doc/html/inet_res.html"><code·class="inline">inet_res</code></a>.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="2 | 195 | for·<a·href="../../../lib/kernel-10.2.3/doc/html/inet_res.html"><code·class="inline">inet_res</code></a>.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="2264850225-1">{</span><span·class="ss">alt_nameserver</span><span·class="p">,</span><span·class="w">·</span><span·class="n">IP</span><span·class="w">·</span><span·class="p"·data-group-id="2264850225-2">[</span><span·class="p">,</span><span·class="n">Port</s[·...·truncated·by·diffoscope;·len:·98,·SHA:·e9a38afdbc0177f9de8b810c314035009004745d76cb9e37744359a1f9182d9b·...·]-1">}</span><span·class="p">.</span><span·class="w"> |
| 196 | ··</span><span·class="n">IP</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">tuple</span><span·class="p"·data-group-id="2 | 196 | ··</span><span·class="n">IP</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">tuple</span><span·class="p"·data-group-id="2264850225-3">(</span><span·class="p"·data-group-id="2264850225-3">)</span><span·class="w"> |
| 197 | ··</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="2 | 197 | ··</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="2264850225-4">(</span><span·class="p"·data-group-id="2264850225-4">)</span></code></pre><p>Add·address·(and·port,·if·other·than·default)·of·the·secondary·nameserver·for |
| 198 | <a·href="../../../lib/kernel-10.2.3/doc/html/inet_res.html"><code·class="inline">inet_res</code></a>.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="5160437698-1">{</span><span·class="ss">search</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Domains</span><span·class="p"·data-group-id="5160437698-1">}</span><span·class="p">.</span><span·class="w"> | ||
| 199 | ··</span><span·class="n">Domains</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="5160437698-2">[</span><span·class="nf">string</span><span·class="p"·data-group-id="5160437698-3">(</span><span·class="p"·data-group-id="5160437698-3">)</span><span·class="p"·data-group-id="5160437698-2">]</span></code></pre><p>Add·search·domains·for·<a·href="../../../lib/kernel-10.2.3/doc/html/inet_res.html"><code·class="inline">inet_res</code></a>.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="4668585295-1">{</span><span·class="ss">lookup</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Methods</span><span·class="p"·data-group-id="4668585295-1">}</span><span·class="p">.</span><span·class="w"> | ||
| 200 | · | 198 | <a·href="../../../lib/kernel-10.2.3/doc/html/inet_res.html"><code·class="inline">inet_res</code></a>.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="0960503416-1">{</span><span·class="ss">search</span><span·class[·...·truncated·by·diffoscope;·len:·160,·SHA:·303be93512a3c5c404bbf837a62224f0657f7bfa799dca5ee829ef581d40234c·...·] |
| 199 | ··</span><span·class="n">Domains</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="0960503416-2">[</span><span·class="nf">string</span><span·class="p"·data-group-id="0960503416-3">(</span><span·class="p"·data-group-id="0960503416-3">)</span><span·class="p"·data-group-id="0960503416-2">]</span></code></pre><p>Add·search·domains·for·<a·href="../../../lib/kernel-10.2.3/doc/html/inet_res.html"><code·class="inline">inet_res</code></a>.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="6662578437-1">{</span><span·class="ss">lookup</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Methods</span><span·class="p"·data-group-id="6662578437-1">}</span><span·class="p">.</span><span·class="w"> | ||
| 200 | ··</span><span·class="n">Methods</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6662578437-2">[</span><span·class="nf">atom</span><span·class="p"·data-group-id="6662578437-3">(</span><span·class="p"·data-group-id="6662578437-3">)</span><span·class="p"·data-group-id="6662578437-2">]</span></code></pre><p>Specify·lookup·methods·and·in·which·order·to·try·them.·The·valid·methods·are | ||
| 201 | as·follows:</p><ul><li><code·class="inline">native</code>·(use·system·calls)</li><li><code·class="inline">file</code>·(use·host·data·retrieved·from·system·configuration·files·and/or·the | 201 | as·follows:</p><ul><li><code·class="inline">native</code>·(use·system·calls)</li><li><code·class="inline">file</code>·(use·host·data·retrieved·from·system·configuration·files·and/or·the |
| 202 | user·configuration·file)</li><li><code·class="inline">dns</code>·(use·the·Erlang·DNS·client·<a·href="../../../lib/kernel-10.2.3/doc/html/inet_res.html"><code·class="inline">inet_res</code></a>·for·nameserver·queries)</li></ul><p>The·lookup·method·<code·class="inline">string</code>·tries·to·parse·the·hostname·as·an·IPv4·or·IPv6 | 202 | user·configuration·file)</li><li><code·class="inline">dns</code>·(use·the·Erlang·DNS·client·<a·href="../../../lib/kernel-10.2.3/doc/html/inet_res.html"><code·class="inline">inet_res</code></a>·for·nameserver·queries)</li></ul><p>The·lookup·method·<code·class="inline">string</code>·tries·to·parse·the·hostname·as·an·IPv4·or·IPv6 |
| 203 | string·and·return·the·resulting·IP·address.·It·is·automatically·tried·first | 203 | string·and·return·the·resulting·IP·address.·It·is·automatically·tried·first |
| 204 | when·<code·class="inline">native</code>·is·<em>not</em>·in·the·<code·class="inline">Methods</code>·list.·To·skip·it·in·this·case,·the | 204 | when·<code·class="inline">native</code>·is·<em>not</em>·in·the·<code·class="inline">Methods</code>·list.·To·skip·it·in·this·case,·the |
| 205 | pseudo·lookup·method·<code·class="inline">nostring</code>·can·be·inserted·anywhere·in·the·<code·class="inline">Methods</code> | 205 | pseudo·lookup·method·<code·class="inline">nostring</code>·can·be·inserted·anywhere·in·the·<code·class="inline">Methods</code> |
| 206 | list.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="4 | 206 | list.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="1420297796-1">{</span><span·class="ss">cache_size</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Size</span><span·class="p"·data-group-id="1420297796-1">}</span><span·class="p">.</span><span·class="w"> |
| 207 | ··</span><span·class="n">Size</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="4 | 207 | ··</span><span·class="n">Size</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="1420297796-2">(</span><span·class="p"·data-group-id="1420297796-2">)</span></code></pre><p>Set·the·resolver·cache·size·for·<code·class="inline">dns</code>·lookups.·<code·class="inline">native</code>·lookups·are·not |
| 208 | cached.·Defaults·to·100·DNS·records.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 208 | cached.·Defaults·to·100·DNS·records.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="7222286403-1">{</span><span·class="ss">cache_refresh</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Time</span><span·class="p"·data-group-id="7222286403-1">}</span><span·class="p">.</span><span·class="w"> |
| 209 | ··</span><span·class="n">Time</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id=" | 209 | ··</span><span·class="n">Time</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="7222286403-2">(</span><span·class="p"·data-group-id="7222286403-2">)</span></code></pre><p>Set·how·often·(in·milliseconds)·the·resolver·cache·for·<a·href="../../../lib/kernel-10.2.3/doc/html/inet_res.html"><code·class="inline">inet_res</code></a>·is |
| 210 | refreshed·(that·is,·expired·DNS·records·are·deleted).·Defaults·to·1·hour.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 210 | refreshed·(that·is,·expired·DNS·records·are·deleted).·Defaults·to·1·hour.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="3390203673-1">{</span><span·class="ss">timeout</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Time</span><span·class="p"·data-group-id="3390203673-1">}</span><span·class="p">.</span><span·class="w"> |
| 211 | ··</span><span·class="n">Time</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id=" | 211 | ··</span><span·class="n">Time</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="3390203673-2">(</span><span·class="p"·data-group-id="3390203673-2">)</span></code></pre><p>Set·the·time·to·wait·until·retry·(in·milliseconds)·for·DNS·queries·made·by |
| 212 | <a·href="../../../lib/kernel-10.2.3/doc/html/inet_res.html"><code·class="inline">inet_res</code></a>.·Defaults·to·2·seconds.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 212 | <a·href="../../../lib/kernel-10.2.3/doc/html/inet_res.html"><code·class="inline">inet_res</code></a>.·Defaults·to·2·seconds.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8046639728-1">{</span><span·class="ss">retry</span><span·class="p">,</span><span·class="w">·</span><span·class="n">N</span><span·class="p"·data-group-id="8046639728-1">}</span><span·class="p">.</span><span·class="w"> |
| 213 | ··</span><span·class="n">N</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id=" | 213 | ··</span><span·class="n">N</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="8046639728-2">(</span><span·class="p"·data-group-id="8046639728-2">)</span></code></pre><p>Set·the·number·of·DNS·queries·<a·href="../../../lib/kernel-10.2.3/doc/html/inet_res.html"><code·class="inline">inet_res</code></a>·will·try·before·giving·up.·Defaults |
| 214 | to·3.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 214 | to·3.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8149317752-1">{</span><span·class="ss">servfail_retry_timeout</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Time</span><span·class="p"·data-group-id="8149317752-1">}</span><span·class="p">.</span><span·class="w"> |
| 215 | ··</span><span·class="n">Time</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">non_neg_integer</span><span·class="p"·data-group-id=" | 215 | ··</span><span·class="n">Time</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">non_neg_integer</span><span·class="p"·data-group-id="8149317752-2">(</span><span·class="p"·data-group-id="8149317752-2">)</span></code></pre><p>After·all·name·servers·have·been·tried,·there·is·a·timeout·before·the·name |
| 216 | servers·are·tried·again.·This·is·to·prevent·the·server·from·answering·the | 216 | servers·are·tried·again.·This·is·to·prevent·the·server·from·answering·the |
| 217 | query·with·what's·in·the·servfail·cache, | 217 | query·with·what's·in·the·servfail·cache, |
| 218 | <a·href="../../../lib/kernel-10.2.3/doc/html/inet_res.html#servfail_retry_timeout"><code·class="inline">inet_res</code></a>.·Defaults·to·1500·milli | 218 | <a·href="../../../lib/kernel-10.2.3/doc/html/inet_res.html#servfail_retry_timeout"><code·class="inline">inet_res</code></a>.·Defaults·to·1500·milli |
| 219 | seconds·.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 219 | seconds·.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="6167040811-1">{</span><span·class="ss">inet6</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Bool</span><span·class="p"·data-group-id="6167040811-1">}</span><span·class="p">.</span><span·class="w"> |
| 220 | ··</span><span·class="n">Bool</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">false</span></code></pre><p>Tells·the·DNS·client·<a·href="../../../lib/kernel-10.2.3/doc/html/inet_res.html"><code·class="inline">inet_res</code></a>·to·look·up·IPv6·addresses.·Defaults·to | 220 | ··</span><span·class="n">Bool</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">false</span></code></pre><p>Tells·the·DNS·client·<a·href="../../../lib/kernel-10.2.3/doc/html/inet_res.html"><code·class="inline">inet_res</code></a>·to·look·up·IPv6·addresses.·Defaults·to |
| 221 | <code·class="inline">false</code>.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 221 | <code·class="inline">false</code>.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="7803340308-1">{</span><span·class="ss">usevc</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Bool</span><span·class="p"·data-group-id="7803340308-1">}</span><span·class="p">.</span><span·class="w"> |
| 222 | ··</span><span·class="n">Bool</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">false</span></code></pre><p>Tells·the·DNS·client·<a·href="../../../lib/kernel-10.2.3/doc/html/inet_res.html"><code·class="inline">inet_res</code></a>·to·use·TCP·(Virtual·Circuit)·instead·of·UDP. | 222 | ··</span><span·class="n">Bool</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">false</span></code></pre><p>Tells·the·DNS·client·<a·href="../../../lib/kernel-10.2.3/doc/html/inet_res.html"><code·class="inline">inet_res</code></a>·to·use·TCP·(Virtual·Circuit)·instead·of·UDP. |
| 223 | Defaults·to·<code·class="inline">false</code>.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 223 | Defaults·to·<code·class="inline">false</code>.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="1300181501-1">{</span><span·class="ss">edns</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Version</span><span·class="p"·data-group-id="1300181501-1">}</span><span·class="p">.</span><span·class="w"> |
| 224 | ··</span><span·class="n">Version</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">false</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="mi">0</span></code></pre><p>Sets·the·EDNS·version·that·<a·href="../../../lib/kernel-10.2.3/doc/html/inet_res.html"><code·class="inline">inet_res</code></a>·will·use.·The·only·allowed·version·is | 224 | ··</span><span·class="n">Version</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">false</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="mi">0</span></code></pre><p>Sets·the·EDNS·version·that·<a·href="../../../lib/kernel-10.2.3/doc/html/inet_res.html"><code·class="inline">inet_res</code></a>·will·use.·The·only·allowed·version·is |
| 225 | zero.·Defaults·to·<code·class="inline">false</code>,·which·means·not·to·use·EDNS.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 225 | zero.·Defaults·to·<code·class="inline">false</code>,·which·means·not·to·use·EDNS.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="5063157039-1">{</span><span·class="ss">udp_payload_size</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Size</span><span·class="p"·data-group-id="5063157039-1">}</span><span·class="p">.</span><span·class="w"> |
| 226 | ··</span><span·class="n">N</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id=" | 226 | ··</span><span·class="n">N</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="5063157039-2">(</span><span·class="p"·data-group-id="5063157039-2">)</span></code></pre><p>Sets·the·allowed·UDP·payload·size·<a·href="../../../lib/kernel-10.2.3/doc/html/inet_res.html"><code·class="inline">inet_res</code></a>·will·advertise·in·EDNS·queries. |
| 227 | Also·sets·the·limit·when·the·DNS·query·will·be·deemed·too·large·for·UDP | 227 | Also·sets·the·limit·when·the·DNS·query·will·be·deemed·too·large·for·UDP |
| 228 | forcing·a·TCP·query·instead;·this·is·not·entirely·correct,·as·the·advertised | 228 | forcing·a·TCP·query·instead;·this·is·not·entirely·correct,·as·the·advertised |
| 229 | UDP·payload·size·of·the·individual·nameserver·is·what·is·to·be·used,·but·this | 229 | UDP·payload·size·of·the·individual·nameserver·is·what·is·to·be·used,·but·this |
| 230 | simple·strategy·will·do·until·a·more·intelligent·(probing,·caching)·algorithm | 230 | simple·strategy·will·do·until·a·more·intelligent·(probing,·caching)·algorithm |
| 231 | needs·to·be·implemented.·Default·to·1280,·which·stems·from·the·standard | 231 | needs·to·be·implemented.·Default·to·1280,·which·stems·from·the·standard |
| 232 | Ethernet·MTU·size.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 232 | Ethernet·MTU·size.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="1168423042-1">{</span><span·class="ss">udp</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Module</span><span·class="p"·data-group-id="1168423042-1">}</span><span·class="p">.</span><span·class="w"> |
| 233 | ··</span><span·class="n">Module</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id=" | 233 | ··</span><span·class="n">Module</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="1168423042-2">(</span><span·class="p"·data-group-id="1168423042-2">)</span></code></pre><p>Tell·Erlang·to·use·another·primitive·UDP·module·than·<code·class="inline">inet_udp</code>.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="p[·...·truncated·by·diffoscope;·len:·184,·SHA:·2b4c8a978c627d79869ad5fd9c5dbea9b3a88ef70bbca1453dc119c94f4e56f1·...·]-1">}</span><span·class="p">.</span><span·class="w"> |
| 234 | ··</span><span·class="n">Module</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id=" | 234 | ··</span><span·class="n">Module</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="2268155287-2">(</span><span·class="p"·data-group-id="2268155287-2">)</span></code></pre><p>Tell·Erlang·to·use·another·primitive·TCP·module·than·<code·class="inline">inet_tcp</code>.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">clear_hosts</span><span·class="p">.</span></code></pre><p>Clear·the·hosts·table.</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">clear_ns</span><span·class="p">.</span></code></pre><p>Clear·the·list·of·recorded·nameservers·(primary·and·secondary).</p></li><li><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">clear_search</span><span·class="p">.</span></code></pre><p>Clear·the·list·of·search·domains.</p></li></ul><h2·id="user-configuration-example"·class="section-heading"> |
| 235 | ··<a·href="#user-configuration-example"·class="hover-link"> | 235 | ··<a·href="#user-configuration-example"·class="hover-link"> |
| 236 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 236 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 237 | ··</a> | 237 | ··</a> |
| 238 | ··<span·class="text">User·Configuration·Example</span> | 238 | ··<span·class="text">User·Configuration·Example</span> |
| 239 | </h2> | 239 | </h2> |
| 240 | <p>Assume·that·a·user·does·not·want·Erlang·to·use·the·native·lookup·method,·but | 240 | <p>Assume·that·a·user·does·not·want·Erlang·to·use·the·native·lookup·method,·but |
| 241 | wants·Erlang·to·read·all·information·necessary·from·start·and·use·that·for | 241 | wants·Erlang·to·read·all·information·necessary·from·start·and·use·that·for |
| 242 | resolving·names·and·addresses.·If·lookup·fails,·Erlang·is·to·request·the·data | 242 | resolving·names·and·addresses.·If·lookup·fails,·Erlang·is·to·request·the·data |
| 243 | from·a·nameserver·(using·the·Erlang·DNS·client,·set·to·use·EDNS·allowing·larger | 243 | from·a·nameserver·(using·the·Erlang·DNS·client,·set·to·use·EDNS·allowing·larger |
| 244 | responses).·The·resolver·configuration·is·updated·when·its·configuration·file | 244 | responses).·The·resolver·configuration·is·updated·when·its·configuration·file |
| 245 | changes.·Also,·DNS·records·are·never·to·be·cached.·The·user·configuration·file | 245 | changes.·Also,·DNS·records·are·never·to·be·cached.·The·user·configuration·file |
| 246 | (in·this·example·named·<code·class="inline">erl_inetrc</code>,·stored·in·directory·<code·class="inline">./cfg_files</code>)·can·then | 246 | (in·this·example·named·<code·class="inline">erl_inetrc</code>,·stored·in·directory·<code·class="inline">./cfg_files</code>)·can·then |
| 247 | look·as·follows·(Unix):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·--·ERLANG·INET·CONFIGURATION·FILE·--</span><span·class="w"> | 247 | look·as·follows·(Unix):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·--·ERLANG·INET·CONFIGURATION·FILE·--</span><span·class="w"> |
| 248 | </span><span·class="c1">%%·read·the·hosts·file</span><span·class="w"> | 248 | </span><span·class="c1">%%·read·the·hosts·file</span><span·class="w"> |
| 249 | </span><span·class="p"·data-group-id=" | 249 | </span><span·class="p"·data-group-id="8291452833-1">{</span><span·class="ss">file</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">hosts</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"/etc/hosts"</span><span·class="p"·data-group-id="82914[·...·truncated·by·diffoscope;·len:·4,·SHA:·01ec3d27560e00b678b8ea3afd7c9279919d3cf28eb4ec2bf640c8ecf7629ccc·...·]3-1">}</span><span·class="p">.</span><span·class="w"> |
| 250 | </span><span·class="c1">%%·add·a·particular·host</span><span·class="w"> | 250 | </span><span·class="c1">%%·add·a·particular·host</span><span·class="w"> |
| 251 | </span><span·class="p"·data-group-id=" | 251 | </span><span·class="p"·data-group-id="8291452833-2">{</span><span·class="ss">host</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8291452833-3">{</span><span·class="mi">134</span><span·class="p">,</span><span·class="mi">138</span><span·class="p">,</span><sp[·...·truncated·by·diffoscope;·len:·362,·SHA:·127fd9bd66b7b253bb434e69b570403009e4b6cd9a3b999cdfce9a2e7fc7073e·...·]3-2">}</span><span·class="p">.</span><span·class="w"> |
| 252 | </span><span·class="c1">%%·do·not·monitor·the·hosts·file</span><span·class="w"> | 252 | </span><span·class="c1">%%·do·not·monitor·the·hosts·file</span><span·class="w"> |
| 253 | </span><span·class="p"·data-group-id=" | 253 | </span><span·class="p"·data-group-id="8291452833-5">{</span><span·class="ss">hosts_file</span><span·class="p">,</span><span·class="w">·</span><span·class="s">""</span><span·class="p"·data-group-id="8291452833-5">}</span><span·class="p">.</span><span·class="w"> |
| 254 | </span><span·class="c1">%%·read·and·monitor·nameserver·config·from·here</span><span·class="w"> | 254 | </span><span·class="c1">%%·read·and·monitor·nameserver·config·from·here</span><span·class="w"> |
| 255 | </span><span·class="p"·data-group-id=" | 255 | </span><span·class="p"·data-group-id="8291452833-6">{</span><span·class="ss">resolv_conf</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"/usr/local/etc/resolv.conf"</span><span·class="p"·data-group-id="8291452833-6">}</span><span·class="p">.</span><span·class="w"> |
| 256 | </span><span·class="c1">%%·enable·EDNS</span><span·class="w"> | 256 | </span><span·class="c1">%%·enable·EDNS</span><span·class="w"> |
| 257 | </span><span·class="p"·data-group-id=" | 257 | </span><span·class="p"·data-group-id="8291452833-7">{</span><span·class="ss">edns</span><span·class="p">,</span><span·class="mi">0</span><span·class="p"·data-group-id="8291452833-7">}</span><span·class="p">.</span><span·class="w"> |
| 258 | </span><span·class="c1">%%·disable·caching</span><span·class="w"> | 258 | </span><span·class="c1">%%·disable·caching</span><span·class="w"> |
| 259 | </span><span·class="p"·data-group-id=" | 259 | </span><span·class="p"·data-group-id="8291452833-8">{</span><span·class="ss">cache_size</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">0</span><span·class="p"·data-group-id="8291452833-8">}</span><span·class="p">.</span><span·class="w"> |
| 260 | </span><span·class="c1">%%·specify·lookup·method</span><span·class="w"> | 260 | </span><span·class="c1">%%·specify·lookup·method</span><span·class="w"> |
| 261 | </span><span·class="p"·data-group-id=" | 261 | </span><span·class="p"·data-group-id="8291452833-9">{</span><span·class="ss">lookup</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8291452833-10">[</span><span·class="ss">file</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">dns</span[·...·truncated·by·diffoscope;·len:·95,·SHA:·0bb5d0c7635adfff79fb9011ff8ec976d0b8c92619c835703639978c69b40c08·...·]3-9">}</span><span·class="p">.</span></code></pre><p>And·Erlang·can,·for·example,·be·started·as·follows:</p><pre><code·class="text">%·erl·-sname·my_node·-kernel·inetrc·'"./cfg_files/erl_inetrc"'</code></pre> |
| 262 | </div> | 262 | </div> |
| 263 | <div·class="bottom-actions"·id="bottom-actions"> | 263 | <div·class="bottom-actions"·id="bottom-actions"> |
| 264 | ··<div·class="bottom-actions-item"> | 264 | ··<div·class="bottom-actions-item"> |
| 265 | ······<a·href="driver.html"·class="bottom-actions-button"·rel="prev"> | 265 | ······<a·href="driver.html"·class="bottom-actions-button"·rel="prev"> |
| 266 | ········<span·class="subheader"> | 266 | ········<span·class="subheader"> |
| Offset 157, 16 lines modified | Offset 157, 16 lines modified | ||
| 157 | BF</code></pre><p>If·multiple·<code·class="inline">-eval</code>·expressions·are·specified,·they·are·evaluated·sequentially | 157 | BF</code></pre><p>If·multiple·<code·class="inline">-eval</code>·expressions·are·specified,·they·are·evaluated·sequentially |
| 158 | in·the·order·specified.·<code·class="inline">-eval</code>·expressions·are·evaluated·sequentially·with | 158 | in·the·order·specified.·<code·class="inline">-eval</code>·expressions·are·evaluated·sequentially·with |
| 159 | <code·class="inline">-s</code>·and·<code·class="inline">-run</code>·function·calls·(this·also·in·the·order·specified).·As·with | 159 | <code·class="inline">-s</code>·and·<code·class="inline">-run</code>·function·calls·(this·also·in·the·order·specified).·As·with |
| 160 | <code·class="inline">-s</code>·and·<code·class="inline">-run</code>,·an·evaluation·that·does·not·terminate·blocks·the·system | 160 | <code·class="inline">-s</code>·and·<code·class="inline">-run</code>,·an·evaluation·that·does·not·terminate·blocks·the·system |
| 161 | initialization·process.</p></li><li><p><strong><code·class="inline">-extra</code></strong>·-·Everything·following·<code·class="inline">-extra</code>·is·considered·plain·arguments·and | 161 | initialization·process.</p></li><li><p><strong><code·class="inline">-extra</code></strong>·-·Everything·following·<code·class="inline">-extra</code>·is·considered·plain·arguments·and |
| 162 | can·be·retrieved·using·<a·href="#get_plain_arguments/0"><code·class="inline">get_plain_arguments/0</code></a>.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl·-extra·+A·1·--</span><span·class="w"> | 162 | can·be·retrieved·using·<a·href="#get_plain_arguments/0"><code·class="inline">get_plain_arguments/0</code></a>.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl·-extra·+A·1·--</span><span·class="w"> |
| 163 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="gp·unselectable"> | 163 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="gp·unselectable"> |
| 164 | 1>·</span><span·class="nc">init</span><span·class="p">:</span><span·class="nf">get_plain_arguments</span><span·class="p"·data-group-id=" | 164 | 1>·</span><span·class="nc">init</span><span·class="p">:</span><span·class="nf">get_plain_arguments</span><span·class="p"·data-group-id="0442453065-1">(</span><span·class="p"·data-group-id="0442453065-1">)</span><span·class="p">.</span><span·class="w"> |
| 165 | </span><span·class="p"·data-group-id=" | 165 | </span><span·class="p"·data-group-id="0442453065-2">[</span><span·class="s">"+A"</span><span·class="p">,</span><span·class="s">"1"</span><span·class="p">,</span><span·class="s">"--"</span><span·class="p"·data-group-id="0442453065-2">]</span></code></pre><p>The·<code·class="inline">-extra</code>·flag·can·be·passed·on·the·command·line,·through·<code·class="inline">ERL_*FLAGS</code>·or |
| 166 | <code·class="inline">-args_file</code>.·It·only·effects·the·remaining·command-line·flags·in·the·entity | 166 | <code·class="inline">-args_file</code>.·It·only·effects·the·remaining·command-line·flags·in·the·entity |
| 167 | in·which·it·is·passed.·If·multiple·<code·class="inline">-extra</code>·flags·are·passed·they·are | 167 | in·which·it·is·passed.·If·multiple·<code·class="inline">-extra</code>·flags·are·passed·they·are |
| 168 | concatenated·using·the·same·order·rules·as·<code·class="inline">ERL_*FLAGS</code>·or·<code·class="inline">-args_file</code>·in | 168 | concatenated·using·the·same·order·rules·as·<code·class="inline">ERL_*FLAGS</code>·or·<code·class="inline">-args_file</code>·in |
| 169 | which·they·are·given.</p><p>Example:</p><pre><code·class="text">%·ERL_AFLAGS="-extra·a"·ERL_ZFLAGS="-extra·d"·erl·-extra·b·-extra·c | 169 | which·they·are·given.</p><p>Example:</p><pre><code·class="text">%·ERL_AFLAGS="-extra·a"·ERL_ZFLAGS="-extra·d"·erl·-extra·b·-extra·c |
| 170 | ... | 170 | ... |
| 171 | 1>·init:get_plain_arguments(). | 171 | 1>·init:get_plain_arguments(). |
| 172 | ["a","b","-extra","c","d"]</code></pre></li><li><p><strong><code·class="inline">-S·Mod·[Func·[Arg1,·Arg2,·...]]</code></strong>·-·Evaluates·the·specified·function·call | 172 | ["a","b","-extra","c","d"]</code></pre></li><li><p><strong><code·class="inline">-S·Mod·[Func·[Arg1,·Arg2,·...]]</code></strong>·-·Evaluates·the·specified·function·call |
| Offset 212, 21 lines modified | Offset 212, 21 lines modified | ||
| 212 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 212 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 213 | ··</a> | 213 | ··</a> |
| 214 | ··<span·class="text">Example</span> | 214 | ··<span·class="text">Example</span> |
| 215 | </h2> | 215 | </h2> |
| 216 | <pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl·--·a·b·-children·thomas·claire·-ages·7·3·--·x·y</span><span·class="w"> | 216 | <pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl·--·a·b·-children·thomas·claire·-ages·7·3·--·x·y</span><span·class="w"> |
| 217 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 217 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 218 | </span><span·class="mi">1</span><span·class="o">></span><span·class="w">·</span><span·class="nc">init</span><span·class="p">:</span><span·class="nf">get_plain_arguments</span><span·class="p"·data-group-id=" | 218 | </span><span·class="mi">1</span><span·class="o">></span><span·class="w">·</span><span·class="nc">init</span><span·class="p">:</span><span·class="nf">get_plain_arguments</span><span·class="p"·data-group-id="4064166503-1">(</span><span·class="p"·data-group-id="4064166503-1">)</span><span·class="p">.</span><span·class="w"> |
| 219 | </span><span·class="p"·data-group-id=" | 219 | </span><span·class="p"·data-group-id="4064166503-2">[</span><span·class="s">"a"</span><span·class="p">,</span><span·class="s">"b"</span><span·class="p">,</span><span·class="s">"x"</span><span·class="p">,</span><span·class="s">"y"</span><span·class="p"·da[·...·truncated·by·diffoscope;·len:·23,·SHA:·eb9d4d9195ec4d0659b3e607bbfd1b4b27c34abce52b33bf9c0ac988157e7747·...·]-2">]</span><span·class="gp·unselectable"> |
| 220 | 2>·</span><span·class="nc">init</span><span·class="p">:</span><span·class="nf">get_argument</span><span·class="p"·data-group-id=" | 220 | 2>·</span><span·class="nc">init</span><span·class="p">:</span><span·class="nf">get_argument</span><span·class="p"·data-group-id="4064166503-3">(</span><span·class="ss">children</span><span·class="p"·data-group-id="4064166503-3">)</span><span·class="p">.</span><span·class="w"> |
| 221 | </span><span·class="p"·data-group-id=" | 221 | </span><span·class="p"·data-group-id="4064166503-4">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="4064166503-5">[</span><span·class="p"·data-group-id="4064166503-6">[</span><span·class="s">"thomas"</span><span·class="p">,</span><span·class="[·...·truncated·by·diffoscope;·len:·175,·SHA:·1ca1290cd937f7f8c29f96d9149dd399a329f92424d252e2a76a1f29af5c75e8·...·]-4">}</span><span·class="gp·unselectable"> |
| 222 | 3>·</span><span·class="nc">init</span><span·class="p">:</span><span·class="nf">get_argument</span><span·class="p"·data-group-id=" | 222 | 3>·</span><span·class="nc">init</span><span·class="p">:</span><span·class="nf">get_argument</span><span·class="p"·data-group-id="4064166503-7">(</span><span·class="ss">ages</span><span·class="p"·data-group-id="4064166503-7">)</span><span·class="p">.</span><span·class="w"> |
| 223 | </span><span·class="p"·data-group-id=" | 223 | </span><span·class="p"·data-group-id="4064166503-8">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4064166503-9">[</span><span·class="p"·data-group-id="4064166503-10">[</span><span·class="s">"7"</span><span·class="p">,[·...·truncated·by·diffoscope;·len:·191,·SHA:·58ddac904ece189474d4c0821ececc7672d2eaaa904970b4a7010cf56fb355f3·...·]-8">}</span><span·class="gp·unselectable"> |
| 224 | 4>·</span><span·class="nc">init</span><span·class="p">:</span><span·class="nf">get_argument</span><span·class="p"·data-group-id=" | 224 | 4>·</span><span·class="nc">init</span><span·class="p">:</span><span·class="nf">get_argument</span><span·class="p"·data-group-id="4064166503-11">(</span><span·class="ss">silly</span><span·class="p"·data-group-id="4064166503-11">)</span><span·class="p">.</span><span·class="w"> |
| 225 | </span><span·class="ss">error</span></code></pre><h2·id="module-see-also"·class="section-heading"> | 225 | </span><span·class="ss">error</span></code></pre><h2·id="module-see-also"·class="section-heading"> |
| 226 | ··<a·href="#module-see-also"·class="hover-link"> | 226 | ··<a·href="#module-see-also"·class="hover-link"> |
| 227 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 227 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 228 | ··</a> | 228 | ··</a> |
| 229 | ··<span·class="text">See·Also</span> | 229 | ··<span·class="text">See·Also</span> |
| 230 | </h2> | 230 | </h2> |
| 231 | <p><a·href="erl_prim_loader.html"><code·class="inline">erl_prim_loader</code></a>,·<a·href="../../../lib/kernel-10.2.3/doc/html/heart.html"><code·class="inline">heart</code></a></p> | 231 | <p><a·href="erl_prim_loader.html"><code·class="inline">erl_prim_loader</code></a>,·<a·href="../../../lib/kernel-10.2.3/doc/html/heart.html"><code·class="inline">heart</code></a></p> |
| Offset 512, 20 lines modified | Offset 512, 20 lines modified | ||
| 512 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·get_argument(Flag)·->·{ok,·Arg}·|·error·when·Flag·::·<a·href="erlang.html#t:atom/0">atom</a>(),·Arg·::·[Values·::·[<a·href="erlang.html#t:string/0">string</a>()]].</pre> | 512 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·get_argument(Flag)·->·{ok,·Arg}·|·error·when·Flag·::·<a·href="erlang.html#t:atom/0">atom</a>(),·Arg·::·[Values·::·[<a·href="erlang.html#t:string/0">string</a>()]].</pre> |
| 513 | ······</div> | 513 | ······</div> |
| 514 | <p>Returns·all·values·associated·with·the·command-line·user·flag·<code·class="inline">Flag</code>.</p><p>If·<code·class="inline">Flag</code>·is·provided·several·times,·each·<code·class="inline">Values</code>·is·returned·in·preserved·order. | 514 | <p>Returns·all·values·associated·with·the·command-line·user·flag·<code·class="inline">Flag</code>.</p><p>If·<code·class="inline">Flag</code>·is·provided·several·times,·each·<code·class="inline">Values</code>·is·returned·in·preserved·order. |
| 515 | Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl·-a·b·c·-a·d</span><span·class="w"> | 515 | Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl·-a·b·c·-a·d</span><span·class="w"> |
| 516 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="gp·unselectable"> | 516 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="gp·unselectable"> |
| 517 | 1>·</span><span·class="nc">init</span><span·class="p">:</span><span·class="nf">get_argument</span><span·class="p"·data-group-id=" | 517 | 1>·</span><span·class="nc">init</span><span·class="p">:</span><span·class="nf">get_argument</span><span·class="p"·data-group-id="2950336838-1">(</span><span·class="ss">a</span><span·class="p"·data-group-id="2950336838-1">)</span><span·class="p">.</span><span·class="w"> |
| 518 | </span><span·class="p"·data-group-id=" | 518 | </span><span·class="p"·data-group-id="2950336838-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="2950336838-3">[</span><span·class="p"·data-group-id="2950336838-4">[</span><span·class="s">"b"</span><span·class="p">,</span><span·class="s">&q[·...·truncated·by·diffoscope;·len:·331,·SHA:·2739bc7cfd7035118558e5439ec6af03e823d341b1f72c355f63952dca1a5b29·...·]-2">}</span></code></pre><p>The·following·flags·are·defined·automatically·and·can·be·retrieved·using·this |
| 519 | function:</p><ul><li><p><strong><code·class="inline">root</code></strong>·-·The·installation·directory·of·Erlang/OTP,·<code·class="inline">$ROOT</code>:</p><pre><code·class="text">2>·init:get_argument(root). | 519 | function:</p><ul><li><p><strong><code·class="inline">root</code></strong>·-·The·installation·directory·of·Erlang/OTP,·<code·class="inline">$ROOT</code>:</p><pre><code·class="text">2>·init:get_argument(root). |
| 520 | {ok,[["/usr/local/otp/releases/otp_beam_solaris8_r10b_patched"]]}</code></pre></li><li><p><strong><code·class="inline">progname</code></strong>·-·The·name·of·the·program·which·started·Erlang:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="nc">init</span><span·class="p">:</span><span·class="nf">get_argument</span><span·class="p"·data-group-id=" | 520 | {ok,[["/usr/local/otp/releases/otp_beam_solaris8_r10b_patched"]]}</code></pre></li><li><p><strong><code·class="inline">progname</code></strong>·-·The·name·of·the·program·which·started·Erlang:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="nc">init</span><span·class="p">:</span><span·class="nf">get_argument</span><span·class="p"·data-group-id="1346576695-1">(</span><span·class="ss">progname</span><span·class="p"·data-group-id="1346576695-1">)</span><span·class="p">.</span><span·class="w"> |
| 521 | </span><span·class="p"·data-group-id=" | 521 | </span><span·class="p"·data-group-id="1346576695-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="1346576695-3">[</span><span·class="p"·data-group-id="1346576695-4">[</span><span·class="s">"erl"</span><span·class="p"·data-group-id="134657669[·...·truncated·by·diffoscope;·len:·560,·SHA:·f2d00f492c7d1729cdc9e72cec1542c31af9dc5d26c14868e29bdcd416aca765·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 522 | </span><span·class="p"·data-group-id=" | 522 | </span><span·class="p"·data-group-id="4095233485-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="4095233485-3">[</span><span·class="p"·data-group-id="4095233485-4">[</span><span·class="s">"/home/harry"</span><span·class="p"·data-group-id="4[·...·truncated·by·diffoscope;·len:·115,·SHA:·6dcfeac57fcfdb6ae58b879b45ebe8788e389e7ad1db81f08bc121a94d70a50d·...·]-2">}</span></code></pre></li></ul><p>Returns·<code·class="inline">error</code>·if·no·value·is·associated·with·<code·class="inline">Flag</code>.</p> |
| 523 | ··</section> | 523 | ··</section> |
| 524 | </section> | 524 | </section> |
| 525 | <section·class="detail"·id="get_arguments/0"> | 525 | <section·class="detail"·id="get_arguments/0"> |
| 526 | ··<div·class="detail-header"> | 526 | ··<div·class="detail-header"> |
| 527 | ····<a·href="#get_arguments/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 527 | ····<a·href="#get_arguments/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 528 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 528 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 367, 78 lines modified | Offset 367, 78 lines modified | ||
| 367 | language,·that·is,·for·their·side·effects.·Functions·with·side·effects·are·also | 367 | language,·that·is,·for·their·side·effects.·Functions·with·side·effects·are·also |
| 368 | allowed·when·tracing.</p><h2·id="tracing-examples"·class="section-heading"> | 368 | allowed·when·tracing.</p><h2·id="tracing-examples"·class="section-heading"> |
| 369 | ··<a·href="#tracing-examples"·class="hover-link"> | 369 | ··<a·href="#tracing-examples"·class="hover-link"> |
| 370 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 370 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 371 | ··</a> | 371 | ··</a> |
| 372 | ··<span·class="text">Tracing·Examples</span> | 372 | ··<span·class="text">Tracing·Examples</span> |
| 373 | </h2> | 373 | </h2> |
| 374 | <p>Match·an·argument·list·of·three,·where·the·first·and·third·arguments·are·equal:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 374 | <p>Match·an·argument·list·of·three,·where·the·first·and·third·arguments·are·equal:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="3584551171-1">[</span><span·class="p"·data-group-id="3584551171-2">{</span><span·class="p"·data-group-id="3584551171-3">[</span><span·class="ss">'$1'</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'_'</span><span·cla[·...·truncated·by·diffoscope;·len:·116,·SHA:·fe3596a9146372a7eaa5feee823532ae445c852784108f0134da3e999589723c·...·]-3">]</span><span·class="p">,</span><span·class="w"> |
| 375 | ··</span><span·class="p"·data-group-id=" | 375 | ··</span><span·class="p"·data-group-id="3584551171-4">[</span><span·class="p"·data-group-id="3584551171-4">]</span><span·class="p">,</span><span·class="w"> |
| 376 | ··</span><span·class="p"·data-group-id=" | 376 | ··</span><span·class="p"·data-group-id="3584551171-5">[</span><span·class="p"·data-group-id="3584551171-5">]</span><span·class="p"·data-group-id="3584551171-2">}</span><span·class="p"·data-group-id="3584551171-1">]</span></code></pre><p>Match·an·argument·list·of·three,·where·the·second·argument·[·...·truncated·by·diffoscope;·len:·473,·SHA:·227c8c2bb12f447ca20cd6a6cfe362b305c2dad6a81fcf8080641ecde4f2c2b2·...·]-3">]</span><span·class="p">,</span><span·class="w"> |
| 377 | ··</span><span·class="p"·data-group-id=" | 377 | ··</span><span·class="p"·data-group-id="7478062609-4">[</span><span·class="p"·data-group-id="7478062609-5">{</span><span·class="w">·</span><span·class="ss">'>'</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'$1'</span><span·class="p">,</span><span·class[·...·truncated·by·diffoscope;·len:·132,·SHA:·1da46566e40ac137d55d7b0030165fe8d15a00823a5e64609f67be1fc4218086·...·]-4">]</span><span·class="p">,</span><span·class="w"> |
| 378 | ··</span><span·class="p"·data-group-id=" | 378 | ··</span><span·class="p"·data-group-id="7478062609-6">[</span><span·class="p"·data-group-id="7478062609-6">]</span><span·class="p"·data-group-id="7478062609-2">}</span><span·class="p"·data-group-id="7478062609-1">]</span></code></pre><p>Match·an·argument·list·of·three,·where·the·third·argument·is·either·a·tuple |
| 379 | containing·argument·one·and·two,·<em>or</em>·a·list·beginning·with·argument·one·and·two | 379 | containing·argument·one·and·two,·<em>or</em>·a·list·beginning·with·argument·one·and·two |
| 380 | (that·is,·<code·class="inline">[a,b,[a,b,c]]</code>·or·<code·class="inline">[a,b,{a,b}]</code>):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 380 | (that·is,·<code·class="inline">[a,b,[a,b,c]]</code>·or·<code·class="inline">[a,b,{a,b}]</code>):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="0943935314-1">[</span><span·class="p"·data-group-id="0943935314-2">{</span><span·class="p"·data-group-id="0943935314-3">[</span><span·class="ss">'$1'</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'$2'</span><span·cl[·...·truncated·by·diffoscope;·len:·116,·SHA:·e279eb1359a0b150dc68464d2a5dd0068aed61c87407289868a6fd830b62ccdc·...·]4-3">]</span><span·class="p">,</span><span·class="w"> |
| 381 | ··</span><span·class="p"·data-group-id=" | 381 | ··</span><span·class="p"·data-group-id="0943935314-4">[</span><span·class="p"·data-group-id="0943935314-5">{</span><span·class="ss">'orelse'</span><span·class="p">,</span><span·class="w"> |
| 382 | ······</span><span·class="p"·data-group-id=" | 382 | ······</span><span·class="p"·data-group-id="0943935314-6">{</span><span·class="ss">'=:='</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'$3'</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0943935314-7">{</span><span·class=[·...·truncated·by·diffoscope;·len:·283,·SHA:·4b1613528ce4c93b2a61a99fcadeecf4f883f0aec94023246cacd1d33aa51130·...·]4-6">}</span><span·class="p">,</span><span·class="w"> |
| 383 | ······</span><span·class="p"·data-group-id=" | 383 | ······</span><span·class="p"·data-group-id="0943935314-9">{</span><span·class="ss">'and'</span><span·class="p">,</span><span·class="w"> |
| 384 | ········</span><span·class="p"·data-group-id=" | 384 | ········</span><span·class="p"·data-group-id="0943935314-10">{</span><span·class="ss">'=:='</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'$1'</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0943935314-11">{</span><span·clas[·...·truncated·by·diffoscope;·len:·194,·SHA:·4693ffca5ccc657c908d8b14288321942ea1b009f0d8a8689f1c970982f66278·...·]4-10">}</span><span·class="p">,</span><span·class="w"> |
| 385 | ········</span><span·class="p"·data-group-id=" | 385 | ········</span><span·class="p"·data-group-id="0943935314-12">{</span><span·class="ss">'=:='</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'$2'</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0943935314-13">{</span><span·clas[·...·truncated·by·diffoscope;·len:·536,·SHA:·4d63f1a5ada7415b08953ea56ecaf116cb983b6e5a7723c9efb1abf1870468e2·...·]4-4">]</span><span·class="p">,</span><span·class="w"> |
| 386 | ··</span><span·class="p"·data-group-id=" | 386 | ··</span><span·class="p"·data-group-id="0943935314-15">[</span><span·class="p"·data-group-id="0943935314-15">]</span><span·class="p"·data-group-id="0943935314-2">}</span><span·class="p"·data-group-id="0943935314-1">]</span></code></pre><p>The·above·problem·can·also·be·solved·as·follows:</p><pre>[·...·truncated·by·diffoscope;·len:·411,·SHA:·1aadb71f31a49e65bd04d702e86842c8c445a9c63d98ea35ea16c5b60d21351d·...·]-4">{</span><span·class="ss">'$1'</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'$2}],·[],·[]}, |
| 387 | ·{['</span><span·class="sc">$1</span><span·class="ss">',·'</span><span·class="sc">$2</span><span·class="ss">',·['</span><span·class="sc">$1</span><span·class="ss">',·'</span><span·class="sc">$2</span><span·class="ss">'·|·'</span><span·class="p">_</span><span·class="err">'</span><span·class="p">]</span><span·class="p">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id=" | 387 | ·{['</span><span·class="sc">$1</span><span·class="ss">',·'</span><span·class="sc">$2</span><span·class="ss">',·['</span><span·class="sc">$1</span><span·class="ss">',·'</span><span·class="sc">$2</span><span·class="ss">'·|·'</span><span·class="p">_</span><span·class="err">'</span><span·class="p">]</span><span·class="p">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0650273387-5">[</span><span·class="p"·data-group-id="0650273387-5">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0650273387-6">[</span><span·class="p"·data-group-id="0650273387-6">]</span><span·class="p"·data-group-[·...·truncated·by·diffoscope;·len:·67,·SHA:·891e73129c059e57ec98577d903490db7f8a44832c28309bb69723dddbe26606·...·]-3">]</span></code></pre><p>Match·two·arguments,·where·the·first·is·a·tuple·beginning·with·a·list·that·in |
| 388 | turn·begins·with·the·second·argument·times·two·(that·is,·<code·class="inline">[{[4,x],y},2]</code>·or | 388 | turn·begins·with·the·second·argument·times·two·(that·is,·<code·class="inline">[{[4,x],y},2]</code>·or |
| 389 | <code·class="inline">[{[8],·y,·z},4])</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 389 | <code·class="inline">[{[8],·y,·z},4])</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="9917768860-1">[</span><span·class="p"·data-group-id="9917768860-2">{</span><span·class="p"·data-group-id="9917768860-3">[</span><span·class="ss">'$1'</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'$2'</span><span·cl[·...·truncated·by·diffoscope;·len:·1174,·SHA:·ab50623fee3d48f51d910d76753c2637c10d8c6aeb08a963230bc0d3a5dda917·...·]-4">]</span><span·class="p">,</span><span·class="w"> |
| 390 | ··</span><span·class="p"·data-group-id=" | 390 | ··</span><span·class="p"·data-group-id="9917768860-9">[</span><span·class="p"·data-group-id="9917768860-9">]</span><span·class="p"·data-group-id="9917768860-2">}</span><span·class="p"·data-group-id="9917768860-1">]</span></code></pre><p>Match·three·arguments.·When·all·three·are·equal·and·are·numbers,·append·the |
| 391 | process·dump·to·the·trace·message,·otherwise·let·the·trace·message·be·"as·is", | 391 | process·dump·to·the·trace·message,·otherwise·let·the·trace·message·be·"as·is", |
| 392 | but·set·the·sequential·trace·token·label·to·4711:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="58 | 392 | but·set·the·sequential·trace·token·label·to·4711:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="5833093942-1">[</span><span·class="p"·data-group-id="5833093942-2">{</span><span·class="p"·data-group-id="5833093942-3">[</span><span·class="ss">'$1'</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'$1'</span><span·clas[·...·truncated·by·diffoscope;·len:·115,·SHA:·3df5c2516bb7f3efb27ee4e19062638fb89d30ba673a5764629758f52b242458·...·]-3">]</span><span·class="p">,</span><span·class="w"> |
| 393 | ··</span><span·class="p"·data-group-id="5812268151-4">[</span><span·class="p"·data-group-id="5812268151-5">{</span><span·class="nb">is_number</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'$1'</span><span·class="p"·data-group-id="5812268151-5">}</span><span·class="p"·data-group-id="5812268151-4">]</span><span·class="p">,</span><span·class="w"> | ||
| 394 | ··</span><span·class="p"·data-group-id="58 | 393 | ··</span><span·class="p"·data-group-id="5833093942-4">[</span><span·class="p"·data-group-id="5833093942-5">{</span><span·class="nb">is_number</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'$1'</span><span·class="p"·data-group-id="5833093942-5">}</span><span·class="[·...·truncated·by·diffoscope;·len:·33,·SHA:·a58fa6b3418c26fa52867cb721e19163382d693c2fd6535f4138dffb60e8b45d·...·]</span><span·class="p">,</span><span·class="w"> |
| 394 | ··</span><span·class="p"·data-group-id="5833093942-6">[</span><span·class="p"·data-group-id="5833093942-7">{</span><span·class="ss">message</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5833093942-8">{</span><span·class="ss">process_dump</span><span·class="p"·data-group-id="5833093942-8">}</span><span·class="p"·data-group-id="5833093942-7">}</span><span·class="p"·data-group-id="5833093942-6">]</span><span·class="p"·data-group-id="5833093942-2">}</span><span·class="p">,</span><span·class="w"> | ||
| 395 | ·</span><span·class="p"·data-group-id="58 | 395 | ·</span><span·class="p"·data-group-id="5833093942-9">{</span><span·class="ss">'_'</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5833093942-10">[</span><span·class="p"·data-group-id="5833093942-10">]</span><span·class="p">,</span><span·class="w">·</sp[·...·truncated·by·diffoscope;·len:·503,·SHA:·f3389c6e71c821c2c56cd72f2d0190ebaf4861dcbc324741f8495ffc5bce902c·...·]-1">]</span></code></pre><p>As·can·be·noted·above,·the·parameter·list·can·be·matched·against·a·single |
| 396 | <code·class="inline">MatchVariable</code>·or·an·<code·class="inline">'_'</code>.·To·replace·the·whole·parameter·list·with·a·single | 396 | <code·class="inline">MatchVariable</code>·or·an·<code·class="inline">'_'</code>.·To·replace·the·whole·parameter·list·with·a·single |
| 397 | variable·is·a·special·case.·In·all·other·cases·the·<code·class="inline">MatchHead</code>·must·be·a | 397 | variable·is·a·special·case.·In·all·other·cases·the·<code·class="inline">MatchHead</code>·must·be·a |
| 398 | <em>proper</em>·list.</p><p>Generate·a·trace·message·only·if·the·trace·control·word·is·set·to·1:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 398 | <em>proper</em>·list.</p><p>Generate·a·trace·message·only·if·the·trace·control·word·is·set·to·1:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="2881884611-1">[</span><span·class="p"·data-group-id="2881884611-2">{</span><span·class="ss">'_'</span><span·class="p">,</span><span·class="w"> |
| 399 | ··</span><span·class="p"·data-group-id="0940297589-3">[</span><span·class="p"·data-group-id="0940297589-4">{</span><span·class="ss">'=='</span><span·class="p">,</span><span·class="p"·data-group-id="0940297589-5">{</span><span·class="ss">get_tcw</span><span·class="p"·data-group-id="0940297589-5">}</span><span·class="p">,</span><span·class="p"·data-group-id="0940297589-6">{</span><span·class="ss">const</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="0940297589-6">}</span><span·class="p"·data-group-id="0940297589-4">}</span><span·class="p"·data-group-id="0940297589-3">]</span><span·class="p">,</span><span·class="w"> | ||
| 400 | ··</span><span·class="p"·data-group-id=" | 399 | ··</span><span·class="p"·data-group-id="2881884611-3">[</span><span·class="p"·data-group-id="2881884611-4">{</span><span·class="ss">'=='</span><span·class="p">,</span><span·class="p"·data-group-id="2881884611-5">{</span><span·class="ss">get_tcw</span><span·class="p"·data-group-id="288188[·...·truncated·by·diffoscope;·len:·347,·SHA:·fd03e337a8737ceb6cef38f905e2175729c26d576ee85303193850108db062fe·...·]</span><span·class="p">,</span><span·class="w"> |
| 400 | ··</span><span·class="p"·data-group-id="2881884611-7">[</span><span·class="p"·data-group-id="2881884611-7">]</span><span·class="p"·data-group-id="2881884611-2">}</span><span·class="p"·data-group-id="2881884611-1">]</span></code></pre><p>Generate·a·trace·message·only·if·there·is·a·<code·class="inline">seq_trace</code>·token:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="2483032992-1">[</span><span·class="p"·data-group-id="2483032992-2">{</span><span·class="ss">'_'</span><span·class="p">,</span><span·class="w"> | ||
| 401 | ··</span><span·class="p"·data-group-id=" | 401 | ··</span><span·class="p"·data-group-id="2483032992-3">[</span><span·class="p"·data-group-id="2483032992-4">{</span><span·class="ss">'=='</span><span·class="p">,</span><span·class="p"·data-group-id="2483032992-5">{</span><span·class="ss">is_seq_trace</span><span·class="p"·data-group-id="2[·...·truncated·by·diffoscope;·len:·347,·SHA:·9784b9e5adc96ab5c7684e0c9e6ea178434011ad28891d75153de7992106df2c·...·]-3">]</span><span·class="p">,</span><span·class="w"> |
| 402 | ··</span><span·class="p"·data-group-id=" | 402 | ··</span><span·class="p"·data-group-id="2483032992-7">[</span><span·class="p"·data-group-id="2483032992-7">]</span><span·class="p"·data-group-id="2483032992-2">}</span><span·class="p"·data-group-id="2483032992-1">]</span></code></pre><p>Remove·the·<code·class="inline">'silent'</code>·trace·flag·when·the·first·argument·is·<code·class="inline">'verbose'</code>,·and·add |
| 403 | it·when·it·is·<code·class="inline">'silent':</code></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="3 | 403 | it·when·it·is·<code·class="inline">'silent':</code></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8392946186-1">[</span><span·class="p"·data-group-id="8392946186-2">{</span><span·class="ss">'$1'</span><span·class="p">,</span><span·class="w"> |
| 404 | ··</span><span·class="p"·data-group-id="3 | 404 | ··</span><span·class="p"·data-group-id="8392946186-3">[</span><span·class="p"·data-group-id="8392946186-4">{</span><span·class="ss">'=='</span><span·class="p">,</span><span·class="p"·data-group-id="8392946186-5">{</span><span·class="nb">hd</span><span·class="p">,</span><span·class="w">·<[·...·truncated·by·diffoscope;·len:·244,·SHA:·8c4c6f0d26ae76b36481098e58590a01c076c4b5daa61aeb16c840f76599a52c·...·]-3">]</span><span·class="p">,</span><span·class="w"> |
| 405 | ··</span><span·class="p"·data-group-id="3 | 405 | ··</span><span·class="p"·data-group-id="8392946186-6">[</span><span·class="p"·data-group-id="8392946186-7">{</span><span·class="nb">trace</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8392946186-8">[</span><span·class="ss">silent</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·309,·SHA:·abaf1416c6e21164f01087e5d78d4e31409f9f08ad0eb52ce6fa759bb8f77c0b·...·]-2">}</span><span·class="p">,</span><span·class="w"> |
| 406 | ·</span><span·class="p"·data-group-id="3 | 406 | ·</span><span·class="p"·data-group-id="8392946186-10">{</span><span·class="ss">'$1'</span><span·class="p">,</span><span·class="w"> |
| 407 | ··</span><span·class="p"·data-group-id="3 | 407 | ··</span><span·class="p"·data-group-id="8392946186-11">[</span><span·class="p"·data-group-id="8392946186-12">{</span><span·class="ss">'=='</span><span·class="p">,</span><span·class="p"·data-group-id="8392946186-13">{</span><span·class="nb">hd</span><span·class="p">,</span><span·class="w"[·...·truncated·by·diffoscope;·len:·248,·SHA:·9fd4e0cbdedd688102ba41adf6a4baaf7fdbd54c7fbca55ef893192fb905b855·...·]-11">]</span><span·class="p">,</span><span·class="w"> |
| 408 | ··</span><span·class="p"·data-group-id="3 | 408 | ··</span><span·class="p"·data-group-id="8392946186-14">[</span><span·class="p"·data-group-id="8392946186-15">{</span><span·class="nb">trace</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8392946186-16">[</span><span·class="p"·data-group-id="8392946186-16">]<[·...·truncated·by·diffoscope;·len:·630,·SHA:·4056b891b7e15da2d202544a16b21d9dbebf6a6c9b0a841f81598f60ff0f4a97·...·]-2">{</span><span·class="ss">'$1'</span><span·class="p">,</span><span·class="w"> |
| 409 | ··</span><span·class="p"·data-group-id=" | 409 | ··</span><span·class="p"·data-group-id="9978041408-3">[</span><span·class="p"·data-group-id="9978041408-4">{</span><span·class="ss">'=='</span><span·class="p">,</span><span·class="p"·data-group-id="9978041408-5">{</span><span·class="nb">length</span><span·class="p">,</span><span·class="w[·...·truncated·by·diffoscope;·len:·242,·SHA:·d767f6e66e81c791f616b38c78f852b72a9de1092047e8e05b56e8f9254b8cfc·...·]-3">]</span><span·class="p">,</span><span·class="w"> |
| 410 | ··</span><span·class="p"·data-group-id=" | 410 | ··</span><span·class="p"·data-group-id="9978041408-6">[</span><span·class="p"·data-group-id="9978041408-7">{</span><span·class="ss">return_trace</span><span·class="p"·data-group-id="9978041408-7">}</span><span·class="p"·data-group-id="9978041408-6">]</span><span·class="p"·data-group-id="99780414[·...·truncated·by·diffoscope;·len:·2,·SHA:·323783be9a53a31e158ec9600626a4703e99f4e183bc1acb8772cbdf5c3a1ece·...·]-2">}</span><span·class="p">,</span><span·class="w"> |
| 411 | ·</span><span·class="p"·data-group-id=" | 411 | ·</span><span·class="p"·data-group-id="9978041408-8">{</span><span·class="ss">'_'</span><span·class="p">,</span><span·class="p"·data-group-id="9978041408-9">[</span><span·class="p"·data-group-id="9978041408-9">]</span><span·class="p">,</span><span·class="p"·data-group-id="9978041408-10"[·...·truncated·by·diffoscope;·len:·157,·SHA:·b15dc9c92fcff80f353adb2c088c96f95b6dc31f42f19b6bfde6c77f7bd4b237·...·]-1">]</span></code></pre><p>Generate·a·trace·message·only·if·the·function·is·of·arity·3·and·the·first |
| 412 | argument·is·<code·class="inline">'trace'</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 412 | argument·is·<code·class="inline">'trace'</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="2230210492-1">[</span><span·class="p"·data-group-id="2230210492-2">{</span><span·class="p"·data-group-id="2230210492-3">[</span><span·class="ss">'trace'</span><span·class="p">,</span><span·class="ss">'$2'</span><span·class="p">,</span><span[·...·truncated·by·diffoscope;·len:·71,·SHA:·44793a25e7166c2cbbad5d96ca0dff281127f41f0d1afab19ca4df43fc4da456·...·]2-3">]</span><span·class="p">,</span><span·class="w"> |
| 413 | ··</span><span·class="p"·data-group-id=" | 413 | ··</span><span·class="p"·data-group-id="2230210492-4">[</span><span·class="p"·data-group-id="2230210492-4">]</span><span·class="p">,</span><span·class="w"> |
| 414 | ··</span><span·class="p"·data-group-id=" | 414 | ··</span><span·class="p"·data-group-id="2230210492-5">[</span><span·class="p"·data-group-id="2230210492-5">]</span><span·class="p"·data-group-id="2230210492-2">}</span><span·class="p">,</span><span·class="w"> |
| 415 | ·</span><span·class="p"·data-group-id=" | 415 | ·</span><span·class="p"·data-group-id="2230210492-6">{</span><span·class="ss">'_'</span><span·class="p">,</span><span·class="p"·data-group-id="2230210492-7">[</span><span·class="p"·data-group-id="2230210492-7">]</span><span·class="p">,</span><span·class="p"·data-group-id="2230210492-8">[·...·truncated·by·diffoscope;·len:·154,·SHA:·a3ccbef102d34980524279630e2ab648adad105fe57b9276db4b6a355efc3032·...·]2-1">]</span></code></pre><h2·id="ets-examples"·class="section-heading"> |
| 416 | ··<a·href="#ets-examples"·class="hover-link"> | 416 | ··<a·href="#ets-examples"·class="hover-link"> |
| 417 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 417 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 418 | ··</a> | 418 | ··</a> |
| 419 | ··<span·class="text">ETS·Examples</span> | 419 | ··<span·class="text">ETS·Examples</span> |
| 420 | </h2> | 420 | </h2> |
| 421 | <p>Match·all·objects·in·an·ETS·table,·where·the·first·element·is·the·atom | 421 | <p>Match·all·objects·in·an·ETS·table,·where·the·first·element·is·the·atom |
| 422 | <code·class="inline">'strider'</code>·and·the·tuple·arity·is·3,·and·return·the·whole·object:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 422 | <code·class="inline">'strider'</code>·and·the·tuple·arity·is·3,·and·return·the·whole·object:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="1283153541-1">[</span><span·class="p"·data-group-id="1283153541-2">{</span><span·class="p"·data-group-id="1283153541-3">{</span><span·class="ss">strider</span><span·class="p">,</span><span·class="ss">'_'</span><span·class="p">,</span><span·class="s[·...·truncated·by·diffoscope;·len:·62,·SHA:·211cf0e06dad946e9daf091979d13991b0d516cfd1754e9232d98b6b76275b72·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 423 | ··</span><span·class="p"·data-group-id=" | 423 | ··</span><span·class="p"·data-group-id="1283153541-4">[</span><span·class="p"·data-group-id="1283153541-4">]</span><span·class="p">,</span><span·class="w"> |
| 424 | ··</span><span·class="p"·data-group-id=" | 424 | ··</span><span·class="p"·data-group-id="1283153541-5">[</span><span·class="ss">'$_'</span><span·class="p"·data-group-id="1283153541-5">]</span><span·class="p"·data-group-id="1283153541-2">}</span><span·class="p"·data-group-id="1283153541-1">]</span></code></pre><p>Match·all·objects·in·an·ETS·table·with·arity·>·1·and·the·first·element·is |
| 425 | 'gandalf',·and·return·element·2:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="3 | 425 | 'gandalf',·and·return·element·2:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="7308208653-1">[</span><span·class="p"·data-group-id="7308208653-2">{</span><span·class="ss">'$1'</span><span·class="p">,</span><span·class="w"> |
| 426 | ··</span><span·class="p"·data-group-id="3 | 426 | ··</span><span·class="p"·data-group-id="7308208653-3">[</span><span·class="p"·data-group-id="7308208653-4">{</span><span·class="ss">'=='</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">gandalf</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·da[·...·truncated·by·diffoscope;·len:·830,·SHA:·9310e67e17bcdc58f6e62bbc287d52f160ec6de5a23390048737a382958a4de6·...·]-3">]</span><span·class="p">,</span><span·class="w"> |
| 427 | ··</span><span·class="p"·data-group-id="3 | 427 | ··</span><span·class="p"·data-group-id="7308208653-8">[</span><span·class="p"·data-group-id="7308208653-9">{</span><span·class="nb">element</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="ss">'$1'</span><span·class="p"·data-group-id="7308208653[·...·truncated·by·diffoscope;·len:·159,·SHA:·da6c537a456608b256a72d7cd7be18fd81e0d865838376308c2aff283db48b4e·...·]-1">]</span></code></pre><p>In·this·example,·if·the·first·element·had·been·the·key,·it·is·much·more |
| 428 | efficient·to·match·that·key·in·the·<code·class="inline">MatchHead</code>·part·than·in·the | 428 | efficient·to·match·that·key·in·the·<code·class="inline">MatchHead</code>·part·than·in·the |
| 429 | <code·class="inline">MatchConditions</code>·part.·The·search·space·of·the·tables·is·restricted·with | 429 | <code·class="inline">MatchConditions</code>·part.·The·search·space·of·the·tables·is·restricted·with |
| 430 | regards·to·the·<code·class="inline">MatchHead</code>·so·that·only·objects·with·the·matching·key·are | 430 | regards·to·the·<code·class="inline">MatchHead</code>·so·that·only·objects·with·the·matching·key·are |
| 431 | searched.</p><p>Match·tuples·of·three·elements,·where·the·second·element·is·either·<code·class="inline">'merry'</code>·or | 431 | searched.</p><p>Match·tuples·of·three·elements,·where·the·second·element·is·either·<code·class="inline">'merry'</code>·or |
| 432 | <code·class="inline">'pippin'</code>,·and·return·the·whole·objects:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 432 | <code·class="inline">'pippin'</code>,·and·return·the·whole·objects:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="0361875217-1">[</span><span·class="p"·data-group-id="0361875217-2">{</span><span·class="p"·data-group-id="0361875217-3">{</span><span·class="ss">'_'</span><span·class="p">,</span><span·class="ss">merry</span><span·class="p">,</span><span·class="ss"[·...·truncated·by·diffoscope;·len:·60,·SHA:·a91dacfa80d78f055ef363801013e27cef2cd30dac32654a954116c7cb7ddd04·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 433 | ··</span><span·class="p"·data-group-id=" | 433 | ··</span><span·class="p"·data-group-id="0361875217-4">[</span><span·class="p"·data-group-id="0361875217-4">]</span><span·class="p">,</span><span·class="w"> |
| 434 | ··</span><span·class="p"·data-group-id=" | 434 | ··</span><span·class="p"·data-group-id="0361875217-5">[</span><span·class="ss">'$_'</span><span·class="p"·data-group-id="0361875217-5">]</span><span·class="p"·data-group-id="0361875217-2">}</span><span·class="p">,</span><span·class="w"> |
| 435 | ·</span><span·class="p"·data-group-id=" | 435 | ·</span><span·class="p"·data-group-id="0361875217-6">{</span><span·class="p"·data-group-id="0361875217-7">{</span><span·class="ss">'_'</span><span·class="p">,</span><span·class="ss">pippin</span><span·class="p">,</span><span·class="ss">'_'</span><span·class="p"·data-group-id="03[·...·truncated·by·diffoscope;·len:·8,·SHA:·c5e59ac2fd31279bafe0e97dd45d8380020eebcf8b090b72d2b5ed6d91f400ea·...·]-7">}</span><span·class="p">,</span><span·class="w"> |
| 436 | ··</span><span·class="p"·data-group-id=" | 436 | ··</span><span·class="p"·data-group-id="0361875217-8">[</span><span·class="p"·data-group-id="0361875217-8">]</span><span·class="p">,</span><span·class="w"> |
| 437 | ··</span><span·class="p"·data-group-id=" | 437 | ··</span><span·class="p"·data-group-id="0361875217-9">[</span><span·class="ss">'$_'</span><span·class="p"·data-group-id="0361875217-9">]</span><span·class="p"·data-group-id="0361875217-6">}</span><span·class="p"·data-group-id="0361875217-1">]</span></code></pre><p>Function·<a·href="../../../lib/stdlib-6.2.1/doc/html/ets.html#test_ms/2"><code·class="inline">ets:test_ms/2</code></a>·can·be·useful·for·testing·complicated·ETS·matches.</p> |
| 438 | </div> | 438 | </div> |
| 439 | <div·class="bottom-actions"·id="bottom-actions"> | 439 | <div·class="bottom-actions"·id="bottom-actions"> |
| 440 | ··<div·class="bottom-actions-item"> | 440 | ··<div·class="bottom-actions-item"> |
| 441 | ······<a·href="time_correction.html"·class="bottom-actions-button"·rel="prev"> | 441 | ······<a·href="time_correction.html"·class="bottom-actions-button"·rel="prev"> |
| 442 | ········<span·class="subheader"> | 442 | ········<span·class="subheader"> |
| Offset 176, 15 lines modified | Offset 176, 15 lines modified | ||
| 176 | <ul><li><p><a·href="../../../lib/kernel-10.2.3/doc/html/gen_sctp.html#peeloff/2"><code·class="inline">gen_sctp:peeloff/2</code></a>·has·been·fixed·to·inherit·socket·options·to·the·peeled·off·socket·more·like·<a·href="../../../lib/kernel-10.2.3/doc/html/gen_tcp.html#accept/1"><code·class="inline">gen_tcp:accept/1</code></a>,·for·example·the·options·<code·class="inline">tos</code>·or·<code·class="inline">tclass</code>.</p><p>When·setting·SCTP·options·that·are·unsupported·on·the·platform,·some·should·be·silently·ignored,·but·a·bug·caused·the·option·parsing·to·derail·so·the·options·after·could·bail·out·and·cause·an·error·instead.··This·has·been·fixed.</p><p>Own·Id:·OTP-19225·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8789"·title="">PR-8789</a></p></li><li><p>Fixed·a·bug·where·Erlang·would·corrupt·the·terminal·settings·if·stdin·was·a·TTY·but·stdout·was·not.</p><p>Own·Id:·OTP-19232·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8794"·title="">PR-8794</a>,·<a·href="https://github.com/erlang/otp/issues/8487"·title="">GH-8487</a></p></li><li><p>Fixed·a·bug·in·the·non-JIT·VM·when·loading·a·NIF·over·a·function·that·is·already·traced·by·more·than·one·session.·This·caused·a·VM·crash.·This·bug·has·existed·since·OTP-27.0,·where·multiple·trace·sessions·were·introduced.</p><p>Own·Id:·OTP-19248·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8856"·title="">PR-8856</a></p></li><li><p>Fixed·a·bug·where·the·loading·of·modules·with·extremely·large·binary·construction·instructions·crashed·the·emulator·on·AArch64.</p><p>Own·Id:·OTP-19261·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8815"·title="">GH-8815</a>,·<a·href="https://github.com/erlang/otp/pull/8816"·title="">PR-8816</a></p></li><li><p><a·href="../../../lib/kernel-10.2.3/doc/html/inet.html#getifaddrs/1"><code·class="inline">inet:getifaddrs/0,1</code></a>·is·improved·when·using | 176 | <ul><li><p><a·href="../../../lib/kernel-10.2.3/doc/html/gen_sctp.html#peeloff/2"><code·class="inline">gen_sctp:peeloff/2</code></a>·has·been·fixed·to·inherit·socket·options·to·the·peeled·off·socket·more·like·<a·href="../../../lib/kernel-10.2.3/doc/html/gen_tcp.html#accept/1"><code·class="inline">gen_tcp:accept/1</code></a>,·for·example·the·options·<code·class="inline">tos</code>·or·<code·class="inline">tclass</code>.</p><p>When·setting·SCTP·options·that·are·unsupported·on·the·platform,·some·should·be·silently·ignored,·but·a·bug·caused·the·option·parsing·to·derail·so·the·options·after·could·bail·out·and·cause·an·error·instead.··This·has·been·fixed.</p><p>Own·Id:·OTP-19225·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8789"·title="">PR-8789</a></p></li><li><p>Fixed·a·bug·where·Erlang·would·corrupt·the·terminal·settings·if·stdin·was·a·TTY·but·stdout·was·not.</p><p>Own·Id:·OTP-19232·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8794"·title="">PR-8794</a>,·<a·href="https://github.com/erlang/otp/issues/8487"·title="">GH-8487</a></p></li><li><p>Fixed·a·bug·in·the·non-JIT·VM·when·loading·a·NIF·over·a·function·that·is·already·traced·by·more·than·one·session.·This·caused·a·VM·crash.·This·bug·has·existed·since·OTP-27.0,·where·multiple·trace·sessions·were·introduced.</p><p>Own·Id:·OTP-19248·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8856"·title="">PR-8856</a></p></li><li><p>Fixed·a·bug·where·the·loading·of·modules·with·extremely·large·binary·construction·instructions·crashed·the·emulator·on·AArch64.</p><p>Own·Id:·OTP-19261·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8815"·title="">GH-8815</a>,·<a·href="https://github.com/erlang/otp/pull/8816"·title="">PR-8816</a></p></li><li><p><a·href="../../../lib/kernel-10.2.3/doc/html/inet.html#getifaddrs/1"><code·class="inline">inet:getifaddrs/0,1</code></a>·is·improved·when·using |
| 177 | inet_backend·=·socket.</p><p>Own·Id:·OTP-19264</p></li><li><p><a·href="../../../lib/stdlib-6.2.1/doc/html/win32reg.html#value/2"><code·class="inline">win32reg:value/2</code></a>·will·no·longer·crash·the·emulator·when·the·value·is·an·unterminated·REG_SZ·of·size·0.</p><p>Own·Id:·OTP-19283·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8903"·title="">GH-8903</a>,·<a·href="https://github.com/erlang/otp/pull/8912"·title="">PR-8912</a></p></li><li><p><code·class="inline">Makefile</code>·dependency·generation·on·Windows·in·WSL·2·has·been·corrected.</p><p>Own·Id:·OTP-19300·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8955"·title="">PR-8955</a></p></li><li><p>Fix·lock·order·violation·if·a·NIF·monitor·<code·class="inline">down</code>·callback·calls·<code·class="inline">enif_whereis_pid</code>.·Would·cause·debug·emulator·to·crash·but·could·potentially·lead·to·deadlocks·in·optimized·emulator.</p><p>Own·Id:·OTP-19330·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8983"·title="">GH-8983</a>,·<a·href="https://github.com/erlang/otp/pull/9008"·title="">PR-9008</a></p></li><li><p>Fixed·compilation·faults·when·compiling·using·<code·class="inline">--enable-vm-probes</code>.</p><p>Own·Id:·OTP-19333</p></li><li><p>Fixed·<code·class="inline">erl_nif.h</code>·on·Windows·to·compile·when·gcc·or·clang·is·used.</p><p>Own·Id:·OTP-19341·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/9016"·title="">PR-9016</a></p></li><li><p>Fixed·a·minor·issue·in·the·JIT·debug·information·that·confused·tools·like·GDB·and·perf.</p><p>Own·Id:·OTP-19362·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/9003"·title="">PR-9003</a></p></li></ul><h3·id="improvements-and-new-features"·class="section-heading"> | 177 | inet_backend·=·socket.</p><p>Own·Id:·OTP-19264</p></li><li><p><a·href="../../../lib/stdlib-6.2.1/doc/html/win32reg.html#value/2"><code·class="inline">win32reg:value/2</code></a>·will·no·longer·crash·the·emulator·when·the·value·is·an·unterminated·REG_SZ·of·size·0.</p><p>Own·Id:·OTP-19283·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8903"·title="">GH-8903</a>,·<a·href="https://github.com/erlang/otp/pull/8912"·title="">PR-8912</a></p></li><li><p><code·class="inline">Makefile</code>·dependency·generation·on·Windows·in·WSL·2·has·been·corrected.</p><p>Own·Id:·OTP-19300·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8955"·title="">PR-8955</a></p></li><li><p>Fix·lock·order·violation·if·a·NIF·monitor·<code·class="inline">down</code>·callback·calls·<code·class="inline">enif_whereis_pid</code>.·Would·cause·debug·emulator·to·crash·but·could·potentially·lead·to·deadlocks·in·optimized·emulator.</p><p>Own·Id:·OTP-19330·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8983"·title="">GH-8983</a>,·<a·href="https://github.com/erlang/otp/pull/9008"·title="">PR-9008</a></p></li><li><p>Fixed·compilation·faults·when·compiling·using·<code·class="inline">--enable-vm-probes</code>.</p><p>Own·Id:·OTP-19333</p></li><li><p>Fixed·<code·class="inline">erl_nif.h</code>·on·Windows·to·compile·when·gcc·or·clang·is·used.</p><p>Own·Id:·OTP-19341·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/9016"·title="">PR-9016</a></p></li><li><p>Fixed·a·minor·issue·in·the·JIT·debug·information·that·confused·tools·like·GDB·and·perf.</p><p>Own·Id:·OTP-19362·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/9003"·title="">PR-9003</a></p></li></ul><h3·id="improvements-and-new-features"·class="section-heading"> |
| 178 | ··<a·href="#improvements-and-new-features"·class="hover-link"> | 178 | ··<a·href="#improvements-and-new-features"·class="hover-link"> |
| 179 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 179 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 180 | ··</a> | 180 | ··</a> |
| 181 | ··<span·class="text">Improvements·and·New·Features</span> | 181 | ··<span·class="text">Improvements·and·New·Features</span> |
| 182 | </h3> | 182 | </h3> |
| 183 | <ul><li><p>Improved·documentation·of·<a·href="time_correction.html#timers">timers</a>.</p><p>Own·Id:·OTP-19360·Aux·Id:·ERIERL-1149,·<a·href="https://github.com/erlang/otp/pull/9062"·title="">PR-9062</a></p></li><li><p>The·label·for·a·process·can·now·be·retrieved·also·using·<code·class="inline">process_info(Pid,·label)</code>·in·addition·to·<a·href="../../../lib/stdlib-6.2.1/doc/html/proc_lib.html#get_label/1"><code·class="inline">proc_lib:get_label/1</code></a>.</p><p>This·new·option·is·useful·when·one·wants·to·retrieve·more·than·one·process·info·item.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">process_info</span><span·class="p"·data-group-id=" | 183 | <ul><li><p>Improved·documentation·of·<a·href="time_correction.html#timers">timers</a>.</p><p>Own·Id:·OTP-19360·Aux·Id:·ERIERL-1149,·<a·href="https://github.com/erlang/otp/pull/9062"·title="">PR-9062</a></p></li><li><p>The·label·for·a·process·can·now·be·retrieved·also·using·<code·class="inline">process_info(Pid,·label)</code>·in·addition·to·<a·href="../../../lib/stdlib-6.2.1/doc/html/proc_lib.html#get_label/1"><code·class="inline">proc_lib:get_label/1</code></a>.</p><p>This·new·option·is·useful·when·one·wants·to·retrieve·more·than·one·process·info·item.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">process_info</span><span·class="p"·data-group-id="1854289821-1">(</span><span·class="n">Pid</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1854289821-2">[</span><span·class="ss">label</span><span·class="p">,</span><span·class="ss">registered_name</span><span·class="p"[·...·truncated·by·diffoscope;·len:·79,·SHA:·e76e4d242cc2d1301d5581eee3d1558731a06e1e1ccbff14218528cd492554f3·...·]-1">)</span></code></pre><p>Own·Id:·OTP-19373·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/9108"·title="">PR-9108</a></p></li></ul><h2·id="erts-15-1-3"·class="section-heading"> |
| 184 | ··<a·href="#erts-15-1-3"·class="hover-link"> | 184 | ··<a·href="#erts-15-1-3"·class="hover-link"> |
| 185 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 185 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 186 | ··</a> | 186 | ··</a> |
| 187 | ··<span·class="text">Erts·15.1.3</span> | 187 | ··<span·class="text">Erts·15.1.3</span> |
| 188 | </h2> | 188 | </h2> |
| 189 | <h3·id="fixed-bugs-and-malfunctions-4"·class="section-heading"> | 189 | <h3·id="fixed-bugs-and-malfunctions-4"·class="section-heading"> |
| 190 | ··<a·href="#fixed-bugs-and-malfunctions-4"·class="hover-link"> | 190 | ··<a·href="#fixed-bugs-and-malfunctions-4"·class="hover-link"> |
| Offset 224, 16 lines modified | Offset 224, 16 lines modified | ||
| 224 | </h2> | 224 | </h2> |
| 225 | <h3·id="fixed-bugs-and-malfunctions-7"·class="section-heading"> | 225 | <h3·id="fixed-bugs-and-malfunctions-7"·class="section-heading"> |
| 226 | ··<a·href="#fixed-bugs-and-malfunctions-7"·class="hover-link"> | 226 | ··<a·href="#fixed-bugs-and-malfunctions-7"·class="hover-link"> |
| 227 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 227 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 228 | ··</a> | 228 | ··</a> |
| 229 | ··<span·class="text">Fixed·Bugs·and·Malfunctions</span> | 229 | ··<span·class="text">Fixed·Bugs·and·Malfunctions</span> |
| 230 | </h3> | 230 | </h3> |
| 231 | <ul><li><p>The·<code·class="inline">erl·-man·example</code>·has·been·corrected·to·not·consider·values·set·in·<code·class="inline">ERL_ZFLAGS</code>·and·stop·parsing·arguments·when·a·<code·class="inline">--</code>·is·encountered.</p><p>Own·Id:·OTP-19098·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8478"·title="">PR-8478</a>,·<a·href="https://github.com/erlang/otp/issues/8477"·title="">GH-8477</a></p></li><li><p>Compiler·warnings·for··Windows·I/O·back-end·have·been·silenced.</p><p>Own·Id:·OTP-19113</p></li><li><p>Bugs·related·to·<code·class="inline">return_to</code>·trace·have·been·fixed.·It·did·not·work·for·more·than·once·trace·session·and·it·did·sometimes·not·trigger·for·exceptions.</p><p>Own·Id:·OTP-19122</p></li><li><p>Potential·deadlocks·while·writing·a·crash·dump·have·been·eliminated.</p><p>Own·Id:·OTP-19133·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8521"·title="">PR-8521</a>,·<a·href="https://github.com/erlang/otp/issues/8498"·title="">GH-8498</a></p></li><li><p>When·loading·a·damaged·or·too·old·BEAM·file,·the·runtime·system·could·crash.</p><p>Own·Id:·OTP-19153·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8623"·title="">PR-8623</a></p></li><li><p>A·scheduler·thread·could·get·stuck·when·deleting·a·memory·allocator·carrier·when·adjacent·carriers·were·deleted·and/or·inserted·simultaneously·by·other·schedulers.·This·in·turn·could·cause·the·other·schedulers·to·get·stuck·as·well.</p><p>Own·Id:·OTP-19154·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8613"·title="">GH-8613</a>,·<a·href="https://github.com/erlang/otp/pull/8627"·title="">PR-8627</a></p></li><li><p>Statistics·for·number·of·carriers·in·a·shared·pool·after·calling·<code·class="inline">instrument:allocations</code>·or·<code·class="inline">instrument:carriers</code>·are·now·correct.·Also,·a·potential·bug·in·carrier·block·scanning·was·eliminated.</p><p>Own·Id:·OTP-19166·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8636"·title="">PR-8636</a></p></li><li><p>A·race·in·the·kTLS·flavour·of·SSL·distribution·has·been·fixed·so·that·<code·class="inline">inet_drv.c</code>·doesn't·read·ahead·too·much·data,·which·could·cause·the·kTLS·encryption·to·be·activated·too·late·when·some·encrypted·data·had·already·been·read·into·the·<code·class="inline">inet_drv.c</code>·buffer·as·unencrypted.</p><p>Own·Id:·OTP-19175·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8561"·title="">GH-8561</a>,·<a·href="https://github.com/erlang/otp/pull/8690"·title="">PR-8690</a></p></li><li><p>Fixed·an·emulator·crash·relating·to·compressed·ETS·tables.</p><p>Own·Id:·OTP-19176·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8683"·title="">PR-8683</a></p></li><li><p>A·function·(encode_sockaddr)·was·called·with·superfluous·argument,·on·Windows,·in·the·net·nif.</p><p>Own·Id:·OTP-19181</p></li><li><p>Fixed·a·crash·that·could·happen·on·reallocation·failure.</p><p>Own·Id:·OTP-19192</p></li><li><p>Man·pages·are·now·available·for·<code·class="inline">erl</code>,·<code·class="inline">erlc</code>,·<code·class="inline">dialyzer</code>,·and·all·other·programs·that·are·included·in·Erlang/OTP.</p><p>Own·Id:·OTP-19201·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8740"·title="">PR-8740</a></p></li><li><p>A·previous·correction·in·the·Erlang/OTP·27.0.1·emergency·patch·had·the·unfortunate·side·effect·of·sometimes·causing·an·unnecessary·fullsweep·(major)·garbage·collection·instead·of·a··generation·(minor)·garbage·collection.·This·has·been·corrected.</p><p>Own·Id:·OTP-19209·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8751"·title="">PR-8751</a>,·<a·href="https://github.com/erlang/otp/pull/8539"·title="">PR-8539</a></p></li><li><p>Fixed·trace·matchspec·functions·<code·class="inline">trace</code>·and·<code·class="inline">enable_trace</code>·to·use·the·session·tracer·when·enabling·trace·flags·on·untraced·processes.</p><p>Own·Id:·OTP-19211·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8657"·title="">GH-8657</a></p></li><li><p>Fixed·a·typo·in·the·type·spec·for·<a·href="erlang.html#t:garbage_collection_defaults/0"><code·class="inline">erlang:garbage_collection_defaults/0</code></a>.</p><p>Own·Id:·OTP-19215·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8757"·title="">PR-8757</a></p></li><li><p>Corrected·socket:ioctl·for·genaddr·(SIOCGENADDR).</p><p>Own·Id:·OTP-19216</p></li><li><p>The·support·for·Transparent·Huge·Pages·has·been·disabled·on·non-amd64·Linux·systems.</p><p>Own·Id:·OTP-19219·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8702"·title="">PR-8702</a></p></li><li><p>Fixed·a·race·condition·on·Windows·when·upgrading·from·<code·class="inline">-noshell</code>·to·a·shell·that·would·cause·Erlang·to·crash·with·the·error:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 231 | <ul><li><p>The·<code·class="inline">erl·-man·example</code>·has·been·corrected·to·not·consider·values·set·in·<code·class="inline">ERL_ZFLAGS</code>·and·stop·parsing·arguments·when·a·<code·class="inline">--</code>·is·encountered.</p><p>Own·Id:·OTP-19098·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8478"·title="">PR-8478</a>,·<a·href="https://github.com/erlang/otp/issues/8477"·title="">GH-8477</a></p></li><li><p>Compiler·warnings·for··Windows·I/O·back-end·have·been·silenced.</p><p>Own·Id:·OTP-19113</p></li><li><p>Bugs·related·to·<code·class="inline">return_to</code>·trace·have·been·fixed.·It·did·not·work·for·more·than·once·trace·session·and·it·did·sometimes·not·trigger·for·exceptions.</p><p>Own·Id:·OTP-19122</p></li><li><p>Potential·deadlocks·while·writing·a·crash·dump·have·been·eliminated.</p><p>Own·Id:·OTP-19133·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8521"·title="">PR-8521</a>,·<a·href="https://github.com/erlang/otp/issues/8498"·title="">GH-8498</a></p></li><li><p>When·loading·a·damaged·or·too·old·BEAM·file,·the·runtime·system·could·crash.</p><p>Own·Id:·OTP-19153·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8623"·title="">PR-8623</a></p></li><li><p>A·scheduler·thread·could·get·stuck·when·deleting·a·memory·allocator·carrier·when·adjacent·carriers·were·deleted·and/or·inserted·simultaneously·by·other·schedulers.·This·in·turn·could·cause·the·other·schedulers·to·get·stuck·as·well.</p><p>Own·Id:·OTP-19154·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8613"·title="">GH-8613</a>,·<a·href="https://github.com/erlang/otp/pull/8627"·title="">PR-8627</a></p></li><li><p>Statistics·for·number·of·carriers·in·a·shared·pool·after·calling·<code·class="inline">instrument:allocations</code>·or·<code·class="inline">instrument:carriers</code>·are·now·correct.·Also,·a·potential·bug·in·carrier·block·scanning·was·eliminated.</p><p>Own·Id:·OTP-19166·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8636"·title="">PR-8636</a></p></li><li><p>A·race·in·the·kTLS·flavour·of·SSL·distribution·has·been·fixed·so·that·<code·class="inline">inet_drv.c</code>·doesn't·read·ahead·too·much·data,·which·could·cause·the·kTLS·encryption·to·be·activated·too·late·when·some·encrypted·data·had·already·been·read·into·the·<code·class="inline">inet_drv.c</code>·buffer·as·unencrypted.</p><p>Own·Id:·OTP-19175·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8561"·title="">GH-8561</a>,·<a·href="https://github.com/erlang/otp/pull/8690"·title="">PR-8690</a></p></li><li><p>Fixed·an·emulator·crash·relating·to·compressed·ETS·tables.</p><p>Own·Id:·OTP-19176·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8683"·title="">PR-8683</a></p></li><li><p>A·function·(encode_sockaddr)·was·called·with·superfluous·argument,·on·Windows,·in·the·net·nif.</p><p>Own·Id:·OTP-19181</p></li><li><p>Fixed·a·crash·that·could·happen·on·reallocation·failure.</p><p>Own·Id:·OTP-19192</p></li><li><p>Man·pages·are·now·available·for·<code·class="inline">erl</code>,·<code·class="inline">erlc</code>,·<code·class="inline">dialyzer</code>,·and·all·other·programs·that·are·included·in·Erlang/OTP.</p><p>Own·Id:·OTP-19201·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8740"·title="">PR-8740</a></p></li><li><p>A·previous·correction·in·the·Erlang/OTP·27.0.1·emergency·patch·had·the·unfortunate·side·effect·of·sometimes·causing·an·unnecessary·fullsweep·(major)·garbage·collection·instead·of·a··generation·(minor)·garbage·collection.·This·has·been·corrected.</p><p>Own·Id:·OTP-19209·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8751"·title="">PR-8751</a>,·<a·href="https://github.com/erlang/otp/pull/8539"·title="">PR-8539</a></p></li><li><p>Fixed·trace·matchspec·functions·<code·class="inline">trace</code>·and·<code·class="inline">enable_trace</code>·to·use·the·session·tracer·when·enabling·trace·flags·on·untraced·processes.</p><p>Own·Id:·OTP-19211·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8657"·title="">GH-8657</a></p></li><li><p>Fixed·a·typo·in·the·type·spec·for·<a·href="erlang.html#t:garbage_collection_defaults/0"><code·class="inline">erlang:garbage_collection_defaults/0</code></a>.</p><p>Own·Id:·OTP-19215·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8757"·title="">PR-8757</a></p></li><li><p>Corrected·socket:ioctl·for·genaddr·(SIOCGENADDR).</p><p>Own·Id:·OTP-19216</p></li><li><p>The·support·for·Transparent·Huge·Pages·has·been·disabled·on·non-amd64·Linux·systems.</p><p>Own·Id:·OTP-19219·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8702"·title="">PR-8702</a></p></li><li><p>Fixed·a·race·condition·on·Windows·when·upgrading·from·<code·class="inline">-noshell</code>·to·a·shell·that·would·cause·Erlang·to·crash·with·the·error:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="6503223943-1">{</span><span·class="ss">'GetOverlappedResult'</span><span·class="p">,</span><span·class="w"> |
| 232 | ··</span><span·class="ss">'The·I/O·operation·has·been·aborted·because·of·either·a·thread·exit·or·an·application·request.'</span><span·class="p"·data-group-id=" | 232 | ··</span><span·class="ss">'The·I/O·operation·has·been·aborted·because·of·either·a·thread·exit·or·an·application·request.'</span><span·class="p"·data-group-id="6503223943-1">}</span><span·class="p">.</span></code></pre><p>Own·Id:·OTP-19220·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8774"·title="">PR-8774</a>,·<a·href="https://github.com/erlang/otp/issues/7621"·title="">GH-7621</a></p></li></ul><h3·id="improvements-and-new-features-1"·class="section-heading"> |
| 233 | ··<a·href="#improvements-and-new-features-1"·class="hover-link"> | 233 | ··<a·href="#improvements-and-new-features-1"·class="hover-link"> |
| 234 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 234 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 235 | ··</a> | 235 | ··</a> |
| 236 | ··<span·class="text">Improvements·and·New·Features</span> | 236 | ··<span·class="text">Improvements·and·New·Features</span> |
| 237 | </h3> | 237 | </h3> |
| 238 | <ul><li><p>Added·functions·<code·class="inline">getservbyname</code>·and·<code·class="inline">getservbyport</code>·to·the·<code·class="inline">net</code>·module.</p><p>Own·Id:·OTP-19101·Aux·Id:·OTP-18835</p></li><li><p>Introduced·enet·|·esock·variants·of·<a·href="../../../lib/kernel-10.2.3/doc/html/inet.html"><code·class="inline">inet</code></a>·functions,·either·when·called·with·sockets, | 238 | <ul><li><p>Added·functions·<code·class="inline">getservbyname</code>·and·<code·class="inline">getservbyport</code>·to·the·<code·class="inline">net</code>·module.</p><p>Own·Id:·OTP-19101·Aux·Id:·OTP-18835</p></li><li><p>Introduced·enet·|·esock·variants·of·<a·href="../../../lib/kernel-10.2.3/doc/html/inet.html"><code·class="inline">inet</code></a>·functions,·either·when·called·with·sockets, |
| 239 | with·explicit·inet_backend·config·or·with·the·e·inet_backend·kernel·config·option.</p><p>Own·Id:·OTP-19132·Aux·Id:·OTP-19101</p></li><li><p>Optimize·process·and·port·creation·when·such·tracing·is·not·enabled·by·any·trace·session.</p><p>Own·Id:·OTP-19167·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8655"·title="">PR-8655</a></p></li><li><p>Compiler·warnings·for·some·removed·functions·have·been·corrected·to·point·out·the·correct·replacement·functions.</p><p>Own·Id:·OTP-19186·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8709"·title="">PR-8709</a></p></li><li><p>A·boolean·option·<code·class="inline">read_ahead</code>·has·been·implemented·for·<code·class="inline">gen_tcp</code>,·default·<code·class="inline">true</code>,·to·facilitate·not·reading·past·(caching·data)·the·end·of·a·packet.··In·particular,·for·kTLS,·caching·data·could·read·in·data·that·was·supposed·to·be·decrypted·by·the·platform's·network·stack,·before·crypto·parameters·could·be·activated.</p><p>Own·Id:·OTP-19199·Aux·Id:·OTP-19175,·<a·href="https://github.com/erlang/otp/issues/8561"·title="">GH-8561</a>,·<a·href="https://github.com/erlang/otp/issues/8690"·title="">GH-8690</a>,·<a·href="https://github.com/erlang/otp/issues/8785"·title="">GH-8785</a></p></li><li><p>The·<a·href="../../../lib/stdlib-6.2.1/doc/html/zip.html"><code·class="inline">zip</code></a>·module·has·been·updated·with·support·for:</p><ul><li>zip64·archives·-·Archives·larger·than·4GB·or·with·more·than·2^32·entries.</li><li>extended·timestamps·-·Higher·resolution·and·in·UTC.</li><li>UID/GID·-·Save·and·extract·the·original·UID/GID.</li><li>Fixes·so·that·permission·mode·attributes·are·correctly·read·and·set·for·files·in·archives.</li><li><a·href="../../../lib/stdlib-6.2.1/doc/html/zip.html#list_dir/2"><code·class="inline">zip:list_dir/2</code></a>·now·also·returns·directories,·not·only·files.·(You·can·disable·this·behaviour·by·using·the·option·<code·class="inline">skip_directories</code>).</li></ul><p>Various·bugs·in·the·original·implementation·have·also·been·fixed,·such·as:</p><ul><li>Correctly·encode·and·decode·the·DOS·timestamps·for·entries·within·an·archive·(that·is·the·non-extended·timestamp).</li><li>Fix·DOS·timestamps·to·be·set·to·localtime·instead·of·UTC·(use·extended·timestamps·for·UTC·timestamps).</li><li>Use·the·unix·file·attributes·read·from·disk·when·creating·archives·instead·of·setting·everything·to·644.</li></ul><p>Own·Id:·OTP-19214·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8765"·title="">PR-8765</a></p></li></ul><h2·id="erts-15-0-1"·class="section-heading"> | 239 | with·explicit·inet_backend·config·or·with·the·e·inet_backend·kernel·config·option.</p><p>Own·Id:·OTP-19132·Aux·Id:·OTP-19101</p></li><li><p>Optimize·process·and·port·creation·when·such·tracing·is·not·enabled·by·any·trace·session.</p><p>Own·Id:·OTP-19167·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8655"·title="">PR-8655</a></p></li><li><p>Compiler·warnings·for·some·removed·functions·have·been·corrected·to·point·out·the·correct·replacement·functions.</p><p>Own·Id:·OTP-19186·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8709"·title="">PR-8709</a></p></li><li><p>A·boolean·option·<code·class="inline">read_ahead</code>·has·been·implemented·for·<code·class="inline">gen_tcp</code>,·default·<code·class="inline">true</code>,·to·facilitate·not·reading·past·(caching·data)·the·end·of·a·packet.··In·particular,·for·kTLS,·caching·data·could·read·in·data·that·was·supposed·to·be·decrypted·by·the·platform's·network·stack,·before·crypto·parameters·could·be·activated.</p><p>Own·Id:·OTP-19199·Aux·Id:·OTP-19175,·<a·href="https://github.com/erlang/otp/issues/8561"·title="">GH-8561</a>,·<a·href="https://github.com/erlang/otp/issues/8690"·title="">GH-8690</a>,·<a·href="https://github.com/erlang/otp/issues/8785"·title="">GH-8785</a></p></li><li><p>The·<a·href="../../../lib/stdlib-6.2.1/doc/html/zip.html"><code·class="inline">zip</code></a>·module·has·been·updated·with·support·for:</p><ul><li>zip64·archives·-·Archives·larger·than·4GB·or·with·more·than·2^32·entries.</li><li>extended·timestamps·-·Higher·resolution·and·in·UTC.</li><li>UID/GID·-·Save·and·extract·the·original·UID/GID.</li><li>Fixes·so·that·permission·mode·attributes·are·correctly·read·and·set·for·files·in·archives.</li><li><a·href="../../../lib/stdlib-6.2.1/doc/html/zip.html#list_dir/2"><code·class="inline">zip:list_dir/2</code></a>·now·also·returns·directories,·not·only·files.·(You·can·disable·this·behaviour·by·using·the·option·<code·class="inline">skip_directories</code>).</li></ul><p>Various·bugs·in·the·original·implementation·have·also·been·fixed,·such·as:</p><ul><li>Correctly·encode·and·decode·the·DOS·timestamps·for·entries·within·an·archive·(that·is·the·non-extended·timestamp).</li><li>Fix·DOS·timestamps·to·be·set·to·localtime·instead·of·UTC·(use·extended·timestamps·for·UTC·timestamps).</li><li>Use·the·unix·file·attributes·read·from·disk·when·creating·archives·instead·of·setting·everything·to·644.</li></ul><p>Own·Id:·OTP-19214·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8765"·title="">PR-8765</a></p></li></ul><h2·id="erts-15-0-1"·class="section-heading"> |
| Offset 262, 25 lines modified | Offset 262, 25 lines modified | ||
| 262 | </h3> | 262 | </h3> |
| 263 | <ul><li><p>Bugs·in·how·<code·class="inline">erl·-extra</code>·interacts·with·passing·flags·via·ERL_*FLAGS·or·<code·class="inline">-args_file</code>·have·been·fixed.</p><p>Own·Id:·OTP-18766·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7639"·title="">PR-7639</a></p></li><li><p>Fixed·a·bug·that·prevented·the·emulator·from·building·on·recent·versions·of·Yocto·Linux.</p><p>Own·Id:·OTP-18918·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7952"·title="">PR-7952</a></p></li><li><p>Fixed·spectre·mitigation·configure·test·to·work·with·GCC·patches·to·always·add·<code·class="inline">-fcf-protection=full</code>.</p><p>Own·Id:·OTP-18928·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8006"·title="">PR-8006</a></p></li><li><p>A··call·to·<code·class="inline">socket:[recv|recvfrom|recvmsg]/*</code>·with·Timeout·=·0·on·Windows·could·cause·a·(case·clause)·crash·if·data·is·immediately·available.</p><p>Own·Id:·OTP-19063·Aux·Id:·OTP-18835</p></li><li><p>Fix·bug·on·Windows·where·<code·class="inline">exit_status</code>·would·not·be·sent·when·a·port·exits·after·the·stdin/stdout·handles·have·been·closed.</p><p>Own·Id:·OTP-19077·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8324"·title="">PR-8324</a></p></li></ul><h3·id="improvements-and-new-features-2"·class="section-heading"> | 263 | <ul><li><p>Bugs·in·how·<code·class="inline">erl·-extra</code>·interacts·with·passing·flags·via·ERL_*FLAGS·or·<code·class="inline">-args_file</code>·have·been·fixed.</p><p>Own·Id:·OTP-18766·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7639"·title="">PR-7639</a></p></li><li><p>Fixed·a·bug·that·prevented·the·emulator·from·building·on·recent·versions·of·Yocto·Linux.</p><p>Own·Id:·OTP-18918·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7952"·title="">PR-7952</a></p></li><li><p>Fixed·spectre·mitigation·configure·test·to·work·with·GCC·patches·to·always·add·<code·class="inline">-fcf-protection=full</code>.</p><p>Own·Id:·OTP-18928·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8006"·title="">PR-8006</a></p></li><li><p>A··call·to·<code·class="inline">socket:[recv|recvfrom|recvmsg]/*</code>·with·Timeout·=·0·on·Windows·could·cause·a·(case·clause)·crash·if·data·is·immediately·available.</p><p>Own·Id:·OTP-19063·Aux·Id:·OTP-18835</p></li><li><p>Fix·bug·on·Windows·where·<code·class="inline">exit_status</code>·would·not·be·sent·when·a·port·exits·after·the·stdin/stdout·handles·have·been·closed.</p><p>Own·Id:·OTP-19077·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8324"·title="">PR-8324</a></p></li></ul><h3·id="improvements-and-new-features-2"·class="section-heading"> |
| 264 | ··<a·href="#improvements-and-new-features-2"·class="hover-link"> | 264 | ··<a·href="#improvements-and-new-features-2"·class="hover-link"> |
| 265 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 265 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 266 | ··</a> | 266 | ··</a> |
| 267 | ··<span·class="text">Improvements·and·New·Features</span> | 267 | ··<span·class="text">Improvements·and·New·Features</span> |
| 268 | </h3> | 268 | </h3> |
| 269 | <ul><li><p>Refactored·how·the·JIT·handles·POSIX·signals·and·how·they·affect·thread·stacks,·allowing·us·to·use·the·native·stack·register·for·Erlang·stacks·on·more·platforms.</p><p>Notably,·containers·built·on·64-bit·x86·Alpine·Linux·images·will·now·perform·much·better·in·sequential·code.·As·an·example,·running·<code·class="inline">dialyzer</code>·over·the·OTP·code·base·finishes·about·15%·quicker.</p><p>Own·Id:·OTP-18568·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7174"·title="">PR-7174</a></p></li><li><p>The·<a·href="../../../lib/runtime_tools-2.1.1/doc/html/instrument.html"><code·class="inline">instrument</code></a>·module·can·now·track·allocations·on·a·per-process·or·per-port·basis.</p><p>Own·Id:·OTP-18577·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7236"·title="">PR-7236</a></p></li><li><p>The·<code·class="inline">pid</code>·field·returned·from·<a·href="erlang.html#fun_info/2"><code·class="inline">erlang:fun_info/1,2</code></a>·is·now·always·the·pid·for·the·<code·class="inline">init</code>·process·of·the·local·node,·not·the·pid·for·the·actual·process·that·created·the·fun.</p><p><strong><em>·POTENTIAL·INCOMPATIBILITY·</em></strong></p><p>Own·Id:·OTP-18594·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7274"·title="">PR-7274</a></p></li><li><p>By·default,·escripts·will·now·be·compiled·instead·of·interpreted.·That·means·that·the·<code·class="inline">compiler</code>·application·must·be·installed.</p><p><strong><em>·POTENTIAL·INCOMPATIBILITY·</em></strong></p><p>Own·Id:·OTP-18639·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7348"·title="">PR-7348</a></p></li><li><p>A·binary·returned·from·the·<a·href="../../../lib/kernel-10.2.3/doc/html/socket.html"><code·class="inline">socket</code></a>·receive·functions·is·no·longer·created·as·a·sub·binary·of·an·often·large·receive·buffer·binary·(socket·option·<code·class="inline">{otp,rcvbuf}</code>).··This·avoids·space·waste,·trusting·the·allocators·to·implement·reallocation·efficiently.</p><p>Own·Id:·OTP-18642·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/6152"·title="">GH-6152</a>,·<a·href="https://github.com/erlang/otp/pull/7465"·title="">PR-7465</a></p></li><li><p>The·default·process·limit·has·been·raised·to·<code·class="inline">1048576</code>·processes.</p><p>Own·Id:·OTP-18699·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7388"·title="">PR-7388</a></p></li><li><p>The·<a·href="erlang.html#system_monitor/2"><code·class="inline">erlang:system_monitor/2</code></a>·functionality·is·now·able·to·monitor·long·message·queues·in·the·system.</p><p>Own·Id:·OTP-18709·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7651"·title="">PR-7651</a></p></li><li><p>The·<code·class="inline">erl</code>·command·now·supports·the·<code·class="inline">-S</code>·flag,·which·is·similar·to·the·<code·class="inline">-run</code>·flag,·except·that·it·will·pass·all·arguments·up·to·end·of·the·command·line·to·the·called·function.·(The·<code·class="inline">-run</code>·flag·will·not·pass·arguments·beginning·with·a·hyphen.)·Another·difference·is·that·<code·class="inline">-S</code>·will·always·call·a·function·with·one·argument,·passing·an·empty·list·if·no·arguments·were·given.</p><p>Own·Id:·OTP-18744·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7470"·title="">PR-7470</a></p></li><li><p>When·implementing·an·alternative·carrier·for·the·Erlang·distribution,·a·separate·input·handler·process·may·now·be·registered,·using·<a·href="erlang.html#dist_ctrl_input_handler/2"><code·class="inline">erlang:dist_ctrl_input_handler/2</code></a>,·also·in·the·case·when·the·distribution·controller·is·a·port.</p><p>Own·Id:·OTP-18774·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7110"·title="">PR-7110</a></p></li><li><p>The·call·stack·trace·has·now·been·added·to·the·error·reported·by·<a·href="erlang.html#process_flag/2"><code·class="inline">erlang:process_flag/2</code></a>·when·<code·class="inline">max_heap_size</code>·limit·has·been·exceeded.</p><p>Own·Id:·OTP-18779·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7592"·title="">PR-7592</a></p></li><li><p><code·class="inline">-callback</code>·attributes·have·been·added·to·<a·href="erl_tracer.html"><code·class="inline">erl_tracer</code></a>.</p><p>Own·Id:·OTP-18794·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7703"·title="">PR-7703</a></p></li><li><p>For·<code·class="inline">inet_backend·=·socket</code>,·setting·the·<code·class="inline">active</code>·socket·option·alone,·to·<code·class="inline">once</code>,·<code·class="inline">true</code>·or·<code·class="inline">N</code>·has·been·optimized,·as·well·as·the·corresponding·data·delivery.</p><p>Own·Id:·OTP-18835</p></li><li><p>New·functions·<code·class="inline">socket:sendv/*</code>·for·sending·I/O·vectors·have·been·added.</p><p>Own·Id:·OTP-18845</p></li><li><p>Socket·options·that·take·string·now·also·accept·binaries.</p><p>Own·Id:·OTP-18849·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/6510"·title="">PR-6510</a></p></li><li><p>Native·coverage·support·has·been·implemented·in·the·JIT.·It·will··automatically·be·used·by·the·<a·href="../../../lib/tools-4.1.1/doc/html/cover.html"><code·class="inline">cover</code></a>·tool·to·reduce·the·execution·overhead·when·running·cover-compiled·code.</p><p>There·are·also·new·APIs·to·support·native·coverage·without·using·the·<code·class="inline">cover</code>·tool.</p><p>To·instrument·code·for·native·coverage·it·must·be·compiled·with·the·<a·href="../../../lib/compiler-8.6/doc/html/compile.html#line_coverage"><code·class="inline">line_coverage</code></a>·option.</p><p>To·enable·native·coverage·in·the·runtime·system,·start·it·like·so:</p><pre><code·class="text">$·erl·+JPcover·true</code></pre><p>There·are·also·the·following·new·functions·for·supporting·native·coverage:</p><ul><li><a·href="../../../lib/kernel-10.2.3/doc/html/code.html#coverage_support/0"><code·class="inline">code:coverage_support/0</code></a></li><li><a·href="../../../lib/kernel-10.2.3/doc/html/code.html#get_coverage/2"><code·class="inline">code:get_coverage/2</code></a></li><li><a·href="../../../lib/kernel-10.2.3/doc/html/code.html#reset_coverage/1"><code·class="inline">code:reset_coverage/1</code></a></li><li><a·href="../../../lib/kernel-10.2.3/doc/html/code.html#get_coverage_mode/0"><code·class="inline">code:get_coverage_mode/0</code></a></li><li><a·href="../../../lib/kernel-10.2.3/doc/html/code.html#get_coverage_mode/1"><code·class="inline">code:get_coverage_mode/1</code></a></li><li><a·href="../../../lib/kernel-10.2.3/doc/html/code.html#set_coverage_mode/1"><code·class="inline">code:set_coverage_mode/1</code></a></li></ul><p>Own·Id:·OTP-18856·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7856"·title="">PR-7856</a></p></li><li><p>Changed·the·default·value·of·the·command·line·flag·<code·class="inline">-code_path_choice</code>·to·<code·class="inline">strict</code>.·</p><p>Note·that·for·application·systems·using·archives,·it·is·necessary·to·add·the·<code·class="inline">code_path_choice·relaxed</code>·to·the·command·line·that·invokes·<code·class="inline">erl</code>.</p><p>Own·Id:·OTP-18894·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7243"·title="">PR-7243</a></p></li><li><p>Added·module·loading·to·<code·class="inline">erl·-init_debug</code>·printouts.</p><p>Own·Id:·OTP-18929·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8004"·title="">PR-8004</a></p></li><li><p>When·the·runtime·system·halts,·it·performs·various·flush·operations·before·terminating.·By·default·there·is·no·limit·on·how·much·time·the·flush·operations·are·allowed·to·take.·A·new·<em>halt·flush·timeout</em>·functionality·has·been·introduced·which·can·be·used·for·limiting·the·amount·of·time·that·the·flushing·operations·are·allowed·to·take.·For·more·information·see·the·documentation·of·the·<a·href="erlang.html#halt_flush_timeout"><code·class="inline">flush_timeout</code></a>·option·of·the·<a·href="erlang.html#halt/2"><code·class="inline">erlang:halt/2</code></a>·BIF·and·the·documentation·of·the·<code·class="inline">erl</code>·<a·href="erl_cmd.html#+zhft"><code·class="inline">+zhft·<Timeout></code></a>·command·line·flag.</p><p>Own·Id:·OTP-18938·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8035"·title="">PR-8035</a>,·<a·href="https://github.com/erlang/otp/issues/7438"·title="">GH-7438</a></p></li><li><p>Optimized·code·loading·by·moving·certain·operations·from·the·code·server·to·the·caller.</p><p>Own·Id:·OTP-18941·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7981"·title="">PR-7981</a></p></li><li><p>Updated·asmjit·to·version·a465fe71ab3d0e224b2b4bd0fac69ae68ab9239d</p><p>Own·Id:·OTP-18942</p></li><li><p>The·deprecated·functions·in·<a·href="zlib.html"><code·class="inline">zlib</code></a>·have·been·removed.·That·includes·<code·class="inline">inflateChunk/{1,2}</code>,·<code·class="inline">getBufSize/1</code>,·<code·class="inline">setBufSize/2</code>,·the·CRC32·functions,·and·the·Adler·checksum·functions.</p><p>Own·Id:·OTP-18950</p></li><li><p>The·documentation·has·been·migrated·to·use·Markdown·and·ExDoc.</p><p>Own·Id:·OTP-18955·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8026"·title="">PR-8026</a></p></li><li><p>Safe·destructive·update·of·tuples·has·been·implemented·in·the·compiler·and·runtime·system.·This·allows·the·VM·to·update·tuples·in-place·when·it·is·safe·to·do·so,·thus·improving·performance·by·doing·less·copying·but·also·by·producing·less·garbage.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="8 | 269 | <ul><li><p>Refactored·how·the·JIT·handles·POSIX·signals·and·how·they·affect·thread·stacks,·allowing·us·to·use·the·native·stack·register·for·Erlang·stacks·on·more·platforms.</p><p>Notably,·containers·built·on·64-bit·x86·Alpine·Linux·images·will·now·perform·much·better·in·sequential·code.·As·an·example,·running·<code·class="inline">dialyzer</code>·over·the·OTP·code·base·finishes·about·15%·quicker.</p><p>Own·Id:·OTP-18568·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7174"·title="">PR-7174</a></p></li><li><p>The·<a·href="../../../lib/runtime_tools-2.1.1/doc/html/instrument.html"><code·class="inline">instrument</code></a>·module·can·now·track·allocations·on·a·per-process·or·per-port·basis.</p><p>Own·Id:·OTP-18577·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7236"·title="">PR-7236</a></p></li><li><p>The·<code·class="inline">pid</code>·field·returned·from·<a·href="erlang.html#fun_info/2"><code·class="inline">erlang:fun_info/1,2</code></a>·is·now·always·the·pid·for·the·<code·class="inline">init</code>·process·of·the·local·node,·not·the·pid·for·the·actual·process·that·created·the·fun.</p><p><strong><em>·POTENTIAL·INCOMPATIBILITY·</em></strong></p><p>Own·Id:·OTP-18594·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7274"·title="">PR-7274</a></p></li><li><p>By·default,·escripts·will·now·be·compiled·instead·of·interpreted.·That·means·that·the·<code·class="inline">compiler</code>·application·must·be·installed.</p><p><strong><em>·POTENTIAL·INCOMPATIBILITY·</em></strong></p><p>Own·Id:·OTP-18639·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7348"·title="">PR-7348</a></p></li><li><p>A·binary·returned·from·the·<a·href="../../../lib/kernel-10.2.3/doc/html/socket.html"><code·class="inline">socket</code></a>·receive·functions·is·no·longer·created·as·a·sub·binary·of·an·often·large·receive·buffer·binary·(socket·option·<code·class="inline">{otp,rcvbuf}</code>).··This·avoids·space·waste,·trusting·the·allocators·to·implement·reallocation·efficiently.</p><p>Own·Id:·OTP-18642·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/6152"·title="">GH-6152</a>,·<a·href="https://github.com/erlang/otp/pull/7465"·title="">PR-7465</a></p></li><li><p>The·default·process·limit·has·been·raised·to·<code·class="inline">1048576</code>·processes.</p><p>Own·Id:·OTP-18699·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7388"·title="">PR-7388</a></p></li><li><p>The·<a·href="erlang.html#system_monitor/2"><code·class="inline">erlang:system_monitor/2</code></a>·functionality·is·now·able·to·monitor·long·message·queues·in·the·system.</p><p>Own·Id:·OTP-18709·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7651"·title="">PR-7651</a></p></li><li><p>The·<code·class="inline">erl</code>·command·now·supports·the·<code·class="inline">-S</code>·flag,·which·is·similar·to·the·<code·class="inline">-run</code>·flag,·except·that·it·will·pass·all·arguments·up·to·end·of·the·command·line·to·the·called·function.·(The·<code·class="inline">-run</code>·flag·will·not·pass·arguments·beginning·with·a·hyphen.)·Another·difference·is·that·<code·class="inline">-S</code>·will·always·call·a·function·with·one·argument,·passing·an·empty·list·if·no·arguments·were·given.</p><p>Own·Id:·OTP-18744·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7470"·title="">PR-7470</a></p></li><li><p>When·implementing·an·alternative·carrier·for·the·Erlang·distribution,·a·separate·input·handler·process·may·now·be·registered,·using·<a·href="erlang.html#dist_ctrl_input_handler/2"><code·class="inline">erlang:dist_ctrl_input_handler/2</code></a>,·also·in·the·case·when·the·distribution·controller·is·a·port.</p><p>Own·Id:·OTP-18774·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7110"·title="">PR-7110</a></p></li><li><p>The·call·stack·trace·has·now·been·added·to·the·error·reported·by·<a·href="erlang.html#process_flag/2"><code·class="inline">erlang:process_flag/2</code></a>·when·<code·class="inline">max_heap_size</code>·limit·has·been·exceeded.</p><p>Own·Id:·OTP-18779·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7592"·title="">PR-7592</a></p></li><li><p><code·class="inline">-callback</code>·attributes·have·been·added·to·<a·href="erl_tracer.html"><code·class="inline">erl_tracer</code></a>.</p><p>Own·Id:·OTP-18794·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7703"·title="">PR-7703</a></p></li><li><p>For·<code·class="inline">inet_backend·=·socket</code>,·setting·the·<code·class="inline">active</code>·socket·option·alone,·to·<code·class="inline">once</code>,·<code·class="inline">true</code>·or·<code·class="inline">N</code>·has·been·optimized,·as·well·as·the·corresponding·data·delivery.</p><p>Own·Id:·OTP-18835</p></li><li><p>New·functions·<code·class="inline">socket:sendv/*</code>·for·sending·I/O·vectors·have·been·added.</p><p>Own·Id:·OTP-18845</p></li><li><p>Socket·options·that·take·string·now·also·accept·binaries.</p><p>Own·Id:·OTP-18849·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/6510"·title="">PR-6510</a></p></li><li><p>Native·coverage·support·has·been·implemented·in·the·JIT.·It·will··automatically·be·used·by·the·<a·href="../../../lib/tools-4.1.1/doc/html/cover.html"><code·class="inline">cover</code></a>·tool·to·reduce·the·execution·overhead·when·running·cover-compiled·code.</p><p>There·are·also·new·APIs·to·support·native·coverage·without·using·the·<code·class="inline">cover</code>·tool.</p><p>To·instrument·code·for·native·coverage·it·must·be·compiled·with·the·<a·href="../../../lib/compiler-8.6/doc/html/compile.html#line_coverage"><code·class="inline">line_coverage</code></a>·option.</p><p>To·enable·native·coverage·in·the·runtime·system,·start·it·like·so:</p><pre><code·class="text">$·erl·+JPcover·true</code></pre><p>There·are·also·the·following·new·functions·for·supporting·native·coverage:</p><ul><li><a·href="../../../lib/kernel-10.2.3/doc/html/code.html#coverage_support/0"><code·class="inline">code:coverage_support/0</code></a></li><li><a·href="../../../lib/kernel-10.2.3/doc/html/code.html#get_coverage/2"><code·class="inline">code:get_coverage/2</code></a></li><li><a·href="../../../lib/kernel-10.2.3/doc/html/code.html#reset_coverage/1"><code·class="inline">code:reset_coverage/1</code></a></li><li><a·href="../../../lib/kernel-10.2.3/doc/html/code.html#get_coverage_mode/0"><code·class="inline">code:get_coverage_mode/0</code></a></li><li><a·href="../../../lib/kernel-10.2.3/doc/html/code.html#get_coverage_mode/1"><code·class="inline">code:get_coverage_mode/1</code></a></li><li><a·href="../../../lib/kernel-10.2.3/doc/html/code.html#set_coverage_mode/1"><code·class="inline">code:set_coverage_mode/1</code></a></li></ul><p>Own·Id:·OTP-18856·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7856"·title="">PR-7856</a></p></li><li><p>Changed·the·default·value·of·the·command·line·flag·<code·class="inline">-code_path_choice</code>·to·<code·class="inline">strict</code>.·</p><p>Note·that·for·application·systems·using·archives,·it·is·necessary·to·add·the·<code·class="inline">code_path_choice·relaxed</code>·to·the·command·line·that·invokes·<code·class="inline">erl</code>.</p><p>Own·Id:·OTP-18894·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7243"·title="">PR-7243</a></p></li><li><p>Added·module·loading·to·<code·class="inline">erl·-init_debug</code>·printouts.</p><p>Own·Id:·OTP-18929·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8004"·title="">PR-8004</a></p></li><li><p>When·the·runtime·system·halts,·it·performs·various·flush·operations·before·terminating.·By·default·there·is·no·limit·on·how·much·time·the·flush·operations·are·allowed·to·take.·A·new·<em>halt·flush·timeout</em>·functionality·has·been·introduced·which·can·be·used·for·limiting·the·amount·of·time·that·the·flushing·operations·are·allowed·to·take.·For·more·information·see·the·documentation·of·the·<a·href="erlang.html#halt_flush_timeout"><code·class="inline">flush_timeout</code></a>·option·of·the·<a·href="erlang.html#halt/2"><code·class="inline">erlang:halt/2</code></a>·BIF·and·the·documentation·of·the·<code·class="inline">erl</code>·<a·href="erl_cmd.html#+zhft"><code·class="inline">+zhft·<Timeout></code></a>·command·line·flag.</p><p>Own·Id:·OTP-18938·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8035"·title="">PR-8035</a>,·<a·href="https://github.com/erlang/otp/issues/7438"·title="">GH-7438</a></p></li><li><p>Optimized·code·loading·by·moving·certain·operations·from·the·code·server·to·the·caller.</p><p>Own·Id:·OTP-18941·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7981"·title="">PR-7981</a></p></li><li><p>Updated·asmjit·to·version·a465fe71ab3d0e224b2b4bd0fac69ae68ab9239d</p><p>Own·Id:·OTP-18942</p></li><li><p>The·deprecated·functions·in·<a·href="zlib.html"><code·class="inline">zlib</code></a>·have·been·removed.·That·includes·<code·class="inline">inflateChunk/{1,2}</code>,·<code·class="inline">getBufSize/1</code>,·<code·class="inline">setBufSize/2</code>,·the·CRC32·functions,·and·the·Adler·checksum·functions.</p><p>Own·Id:·OTP-18950</p></li><li><p>The·documentation·has·been·migrated·to·use·Markdown·and·ExDoc.</p><p>Own·Id:·OTP-18955·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8026"·title="">PR-8026</a></p></li><li><p>Safe·destructive·update·of·tuples·has·been·implemented·in·the·compiler·and·runtime·system.·This·allows·the·VM·to·update·tuples·in-place·when·it·is·safe·to·do·so,·thus·improving·performance·by·doing·less·copying·but·also·by·producing·less·garbage.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="8643012812-1">(</span><span·class="ss">rec</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8643012812-2">{</span><span·class="ss">a</span><span·class="p">,</span><span·class="ss">b</span><span·class="p">,</span><span·cla[·...·truncated·by·diffoscope;·len:·110,·SHA:·ca0e9417d80ab0deeaaf881e06ec74d08fa57558cf20f3787bb05542ca79a52e·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 270 | </span><span·class="nf">update</span><span·class="p"·data-group-id="8 | 270 | </span><span·class="nf">update</span><span·class="p"·data-group-id="8643012812-3">(</span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id="8643012812-4">{</span><span·class="ss">a</span><span·class="o">=</span><span·class="ss">needs_update</span><span·class="p">,</span><span·class="ss">b</sp[·...·truncated·by·diffoscope;·len:·194,·SHA:·a93f3f57296e1888c547d8b034808ebf47c25f692dbdf311effd46f05b370083·...·]-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 271 | ····</span><span·class="n">R</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">R0</span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id="8 | 271 | ····</span><span·class="n">R</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">R0</span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id="8643012812-5">{</span><span·class="ss">a</span><span·class="o">=</span><span·class="ss">up_to_date</span><span·class="p"·data-group-id="8643012812-5">}</span><span·class="p">,</span><span·class="w"> |
| 272 | ····</span><span·class="k">if</span><span·class="w"> | 272 | ····</span><span·class="k">if</span><span·class="w"> |
| 273 | ········</span><span·class="n">N</span><span·class="w">·</span><span·class="o"><</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 273 | ········</span><span·class="n">N</span><span·class="w">·</span><span·class="o"><</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 274 | ············</span><span·class="n">R</span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id="8 | 274 | ············</span><span·class="n">R</span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id="8643012812-6">{</span><span·class="ss">c</span><span·class="o">=</span><span·class="ss">negative</span><span·class="p"·data-group-id="8643012812-6">}</span><span·class="p">;</span><span·class="w"> |
| 275 | ········</span><span·class="n">N</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 275 | ········</span><span·class="n">N</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 276 | ············</span><span·class="n">R</span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id="8 | 276 | ············</span><span·class="n">R</span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id="8643012812-7">{</span><span·class="ss">c</span><span·class="o">=</span><span·class="ss">zero</span><span·class="p"·data-group-id="8643012812-7">}</span><span·class="p">;</span><span·class="w"> |
| 277 | ········</span><span·class="n">N</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 277 | ········</span><span·class="n">N</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 278 | ············</span><span·class="n">R</span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id="8 | 278 | ············</span><span·class="n">R</span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id="8643012812-8">{</span><span·class="ss">c</span><span·class="o">=</span><span·class="ss">positive</span><span·class="p"·data-group-id="8643012812-8">}</span><span·class="w"> |
| 279 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>The·record·updates·in·each·of·the·three·clauses·of·the·<code·class="inline">if</code>·can·safely·be·done·in-place,·because·variable·<code·class="inline">R</code>·is·not·used·again.</p><p>Own·Id:·OTP-18972·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8090"·title="">PR-8090</a></p></li><li><p>The·obsolete·and·undocumented·support·for·opening·a·port·to·an·external | 279 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>The·record·updates·in·each·of·the·three·clauses·of·the·<code·class="inline">if</code>·can·safely·be·done·in-place,·because·variable·<code·class="inline">R</code>·is·not·used·again.</p><p>Own·Id:·OTP-18972·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8090"·title="">PR-8090</a></p></li><li><p>The·obsolete·and·undocumented·support·for·opening·a·port·to·an·external |
| 280 | resource·by·passing·an·atom·(or·a·string)·as·first·argument·to | 280 | resource·by·passing·an·atom·(or·a·string)·as·first·argument·to |
| 281 | <a·href="erlang.html#open_port/2"><code·class="inline">open_port()</code></a>,·implemented·by·the·vanilla·driver, | 281 | <a·href="erlang.html#open_port/2"><code·class="inline">open_port()</code></a>,·implemented·by·the·vanilla·driver, |
| 282 | has·been·removed.·This·feature·has·been·scheduled·for·removal·in·OTP·27 | 282 | has·been·removed.·This·feature·has·been·scheduled·for·removal·in·OTP·27 |
| 283 | since·the·release·of·OTP·26.</p><p>Own·Id:·OTP-18976·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7125"·title="">PR-7125</a></p></li><li><p>An·optional·NIF·callback·<code·class="inline">ERL_NIF_OPT_ON_UNLOAD_THREAD</code>·to·be·called·by·all·scheduler·threads·when·a·NIF·library·is·unloaded.·Used·for·releasing·thread·specific·data.·Can·be·set·with·function·<code·class="inline">enif_set_option</code>.</p><p>Own·Id:·OTP-18977·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7809"·title="">PR-7809</a></p></li><li><p>There·is·a·new·module·<a·href="../../../lib/kernel-10.2.3/doc/html/trace.html"><code·class="inline">trace</code></a>·in·Kernel·providing·the·same·trace·functionality·as·<a·href="erlang.html#trace/3"><code·class="inline">erlang:trace/3</code></a>·and·<a·href="erlang.html#trace_pattern/3"><code·class="inline">erlang:trace_pattern/3</code></a>,·but·with·the·addition·of·<strong>dynamic·isolated·trace·sessions</strong>.</p><p>Own·Id:·OTP-18980</p></li><li><p>Added·the·<code·class="inline">+MMlp·on|off</code>·emulator·option·to·let·the·<code·class="inline">mseg</code>·allocator·use·"large·pages"·(sometimes·known·as·"huge·pages"·or·"super·pages").·This·currently·only·affects·super-carrier·allocations,·but·may·be·extended·in·the·future.</p><p>Own·Id:·OTP-18984·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7977"·title="">PR-7977</a></p></li><li><p><code·class="inline">inet_backend·=·socket</code>·has·been·optimized·and·reworked·to·be·more·compatible·with·the·original·<code·class="inline">inet_backend·=·inet</code>.</p><p>Own·Id:·OTP-19004·Aux·Id:·OTP-18835</p></li><li><p>The·<code·class="inline">socket</code>·documentation·has·been·reworked,·and·due·to | 283 | since·the·release·of·OTP·26.</p><p>Own·Id:·OTP-18976·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7125"·title="">PR-7125</a></p></li><li><p>An·optional·NIF·callback·<code·class="inline">ERL_NIF_OPT_ON_UNLOAD_THREAD</code>·to·be·called·by·all·scheduler·threads·when·a·NIF·library·is·unloaded.·Used·for·releasing·thread·specific·data.·Can·be·set·with·function·<code·class="inline">enif_set_option</code>.</p><p>Own·Id:·OTP-18977·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7809"·title="">PR-7809</a></p></li><li><p>There·is·a·new·module·<a·href="../../../lib/kernel-10.2.3/doc/html/trace.html"><code·class="inline">trace</code></a>·in·Kernel·providing·the·same·trace·functionality·as·<a·href="erlang.html#trace/3"><code·class="inline">erlang:trace/3</code></a>·and·<a·href="erlang.html#trace_pattern/3"><code·class="inline">erlang:trace_pattern/3</code></a>,·but·with·the·addition·of·<strong>dynamic·isolated·trace·sessions</strong>.</p><p>Own·Id:·OTP-18980</p></li><li><p>Added·the·<code·class="inline">+MMlp·on|off</code>·emulator·option·to·let·the·<code·class="inline">mseg</code>·allocator·use·"large·pages"·(sometimes·known·as·"huge·pages"·or·"super·pages").·This·currently·only·affects·super-carrier·allocations,·but·may·be·extended·in·the·future.</p><p>Own·Id:·OTP-18984·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7977"·title="">PR-7977</a></p></li><li><p><code·class="inline">inet_backend·=·socket</code>·has·been·optimized·and·reworked·to·be·more·compatible·with·the·original·<code·class="inline">inet_backend·=·inet</code>.</p><p>Own·Id:·OTP-19004·Aux·Id:·OTP-18835</p></li><li><p>The·<code·class="inline">socket</code>·documentation·has·been·reworked,·and·due·to |
| 284 | that·a·few·details·were·fixed:</p><ul><li><a·href="../../../lib/kernel-10.2.3/doc/html/socket.html#is_supported/1"><code·class="inline">socket:is_supported/1</code></a>·now·returns·<code·class="inline">true</code>·for·example·for·<code·class="inline">protocols</code> | 284 | that·a·few·details·were·fixed:</p><ul><li><a·href="../../../lib/kernel-10.2.3/doc/html/socket.html#is_supported/1"><code·class="inline">socket:is_supported/1</code></a>·now·returns·<code·class="inline">true</code>·for·example·for·<code·class="inline">protocols</code> |
| 285 | that·is·a·"category",·not·an·item.</li><li><a·href="../../../lib/kernel-10.2.3/doc/html/socket.html#cancel_monitor/1"><code·class="inline">socket:cancel_monitor/1</code></a>·no·longer·badargs·for·a·monitor·that·was·set·by | 285 | that·is·a·"category",·not·an·item.</li><li><a·href="../../../lib/kernel-10.2.3/doc/html/socket.html#cancel_monitor/1"><code·class="inline">socket:cancel_monitor/1</code></a>·no·longer·badargs·for·a·monitor·that·was·set·by |
| Offset 3218, 17 lines modified | Offset 3218, 17 lines modified | ||
| 3218 | markedly·so·when·the·maximum·number·of·file·descriptors·has·been·tuned·to·a | 3218 | markedly·so·when·the·maximum·number·of·file·descriptors·has·been·tuned·to·a |
| 3219 | large·number.</p><p>Instead,·in·erl_child_setup,·walk·the·open·descriptors·under·<code·class="inline">/dev/fd</code>·and | 3219 | large·number.</p><p>Instead,·in·erl_child_setup,·walk·the·open·descriptors·under·<code·class="inline">/dev/fd</code>·and |
| 3220 | close·only·those·which·are·open.</p><p>This·optimization·affects·the·CPU·usage·of·starting·a·new·Erlang·instance.</p><p>Own·Id:·OTP-16270</p></li><li><p>Optimized·<a·href="../../../lib/stdlib-6.2.1/doc/html/maps.html#merge/2"><code·class="inline">maps:merge/2</code></a>·for·trivial·cases·of·an·empty·map(s)·or·same·map.</p><p>Own·Id:·OTP-16283·Aux·Id:·PR-2441</p></li><li><p>The·new·experimental·<code·class="inline">socket</code>·module·has·been·moved·to·the·Kernel·application.</p><p>Own·Id:·OTP-16312</p></li><li><p>Improved·the·presentation·of·allocations·and·carriers·in·the·<code·class="inline">instrument</code> | 3220 | close·only·those·which·are·open.</p><p>This·optimization·affects·the·CPU·usage·of·starting·a·new·Erlang·instance.</p><p>Own·Id:·OTP-16270</p></li><li><p>Optimized·<a·href="../../../lib/stdlib-6.2.1/doc/html/maps.html#merge/2"><code·class="inline">maps:merge/2</code></a>·for·trivial·cases·of·an·empty·map(s)·or·same·map.</p><p>Own·Id:·OTP-16283·Aux·Id:·PR-2441</p></li><li><p>The·new·experimental·<code·class="inline">socket</code>·module·has·been·moved·to·the·Kernel·application.</p><p>Own·Id:·OTP-16312</p></li><li><p>Improved·the·presentation·of·allocations·and·carriers·in·the·<code·class="inline">instrument</code> |
| 3221 | module.</p><p>Own·Id:·OTP-16327</p></li><li><p>As·announced·in·OTP·22.0,·the·previously·existing·limited·support·for·VxWorks | 3221 | module.</p><p>Own·Id:·OTP-16327</p></li><li><p>As·announced·in·OTP·22.0,·the·previously·existing·limited·support·for·VxWorks |
| 3222 | has·now·been·removed.</p><p>*<strong>·POTENTIAL·INCOMPATIBILITY·*</strong></p><p>Own·Id:·OTP-16329·Aux·Id:·OTP-15621</p></li><li><p>The·return·value·when·using·the·<code·class="inline">httph</code>·and·<code·class="inline">httph_bin</code>·option·to | 3222 | has·now·been·removed.</p><p>*<strong>·POTENTIAL·INCOMPATIBILITY·*</strong></p><p>Own·Id:·OTP-16329·Aux·Id:·OTP-15621</p></li><li><p>The·return·value·when·using·the·<code·class="inline">httph</code>·and·<code·class="inline">httph_bin</code>·option·to |
| 3223 | <a·href="erlang.html#decode_packet/3"><code·class="inline">erlang:decode_packet/3</code></a>·and·<a·href="../../../lib/kernel-10.2.3/doc/html/inet.html#setopts/2"><code·class="inline">inet:setopts/2</code></a>·has·been·changed·to·also·include | 3223 | <a·href="erlang.html#decode_packet/3"><code·class="inline">erlang:decode_packet/3</code></a>·and·<a·href="../../../lib/kernel-10.2.3/doc/html/inet.html#setopts/2"><code·class="inline">inet:setopts/2</code></a>·has·been·changed·to·also·include |
| 3224 | the·original·header·unmodified.·See·<a·href="erlang.html#decode_packet/3"><code·class="inline">erlang:decode_packet/3</code></a>.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="o">></span><span·class="w"> | 3224 | the·original·header·unmodified.·See·<a·href="erlang.html#decode_packet/3"><code·class="inline">erlang:decode_packet/3</code></a>.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="o">></span><span·class="w"> |
| 3225 | ······</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">decode_packet</span><span·class="p"·data-group-id=" | 3225 | ······</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">decode_packet</span><span·class="p"·data-group-id="2681557504-1">(</span><span·class="ss">httph_bin</span><span·class="p">,</span><span·class="p"·data-group-id="2681557504-2"><<</span><span·class="s">"HELLO: |
| 3226 | ······hi\r\n\r\n"</span><span·class="p"·data-group-id="3709634420-2">>></span><span·class="p">,</span><span·class="p"·data-group-id="3709634420-3">[</span><span·class="p"·data-group-id="3709634420-3">]</span><span·class="p"·data-group-id="3709634420-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 3227 | ······</span><span·class="p"·data-group-id=" | 3226 | ······hi\r\n\r\n"</span><span·class="p"·data-group-id="2681557504-2">>></span><span·class="p">,</span><span·class="p"·data-group-id="2681557504-3">[</span><span·class="p"·data-group-id="2681557504-3">]</span><span·class="p"·data-group-id="2681557504-1[·...·truncated·by·diffoscope;·len:·50,·SHA:·7c76ffcbdd2b9b0809992215d4bc03869c03819d4f2872424fd7856db727c221·...·] |
| 3227 | ······</span><span·class="p"·data-group-id="2681557504-4">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="2681557504-5">{</span><span·class="ss">http_header</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="p"·data-group-id="2681557504-6"><<</span><span·class="s">"Hello"</span><span·class="p"·data-group-id="2681557504-6">>></span><span·class="p">,</span><span·class="p"·data-group-id="2681557504-7"><<</span><span·class="s">"HELLO"</span><span·class="p"·data-group-id="2681557504-7">>></span><span·class="p">,</span><span·class="p"·data-group-id="2681557504-8"><<</span><span·class="s">"hi"</span><span·class="p"·data-group-id="2681557504-8">>></span><span·class="p"·data-group-id="2681557504-5">}</span><span·class="p">,</span><span·class="p"·data-group-id="2681557504-9"><<</span><span·class="s">"\r\n"</span><span·class="p"·data-group-id="2681557504-9">>></span><span·class="p"·data-group-id="2681557504-4">}</span></code></pre><p>Own·Id:·OTP-16347·Aux·Id:·PR-2466</p></li><li><p>Ensure·<a·href="../../../lib/kernel-10.2.3/doc/html/net_kernel.html#monitor_nodes/1"><code·class="inline">net_kernel:monitor_nodes/1</code></a>·sends·<code·class="inline">nodedown</code>·messages·of·a·failed | ||
| 3228 | connection·before·<code·class="inline">nodeup</code>·messages·of·a·reestablished·connection·toward·the | 3228 | connection·before·<code·class="inline">nodeup</code>·messages·of·a·reestablished·connection·toward·the |
| 3229 | same·node.</p><p>Own·Id:·OTP-16362</p></li><li><p>Update·of·<a·href="../../../lib/kernel-10.2.3/doc/html/seq_trace.html#whatis">sequential·tracing</a>·to·also·support·other | 3229 | same·node.</p><p>Own·Id:·OTP-16362</p></li><li><p>Update·of·<a·href="../../../lib/kernel-10.2.3/doc/html/seq_trace.html#whatis">sequential·tracing</a>·to·also·support·other |
| 3230 | information·transfers·than·message·passing.</p><p>Own·Id:·OTP-16370·Aux·Id:·OTP-15251,·OTP-15232</p></li><li><p>socket:·It·is·now·possible·to·create·a·socket·from·an·already·existing·file | 3230 | information·transfers·than·message·passing.</p><p>Own·Id:·OTP-16370·Aux·Id:·OTP-15251,·OTP-15232</p></li><li><p>socket:·It·is·now·possible·to·create·a·socket·from·an·already·existing·file |
| 3231 | descriptor.</p><p>Own·Id:·OTP-16398·Aux·Id:·ERL-1154</p></li><li><p>socket:·The·socket:supports/1·function·now·also·report·if·netns·is·supported | 3231 | descriptor.</p><p>Own·Id:·OTP-16398·Aux·Id:·ERL-1154</p></li><li><p>socket:·The·socket:supports/1·function·now·also·report·if·netns·is·supported |
| 3232 | or·not.</p><p>Own·Id:·OTP-16432</p></li><li><p><code·class="inline">=:=</code>·has·been·optimized·to·return·<code·class="inline">false</code>·immediately·when·comparing·two·maps | 3232 | or·not.</p><p>Own·Id:·OTP-16432</p></li><li><p><code·class="inline">=:=</code>·has·been·optimized·to·return·<code·class="inline">false</code>·immediately·when·comparing·two·maps |
| 3233 | of·different·sizes.</p><p>Own·Id:·OTP-16454</p></li><li><p>Changed·the·behaviour·of·passing·the·<code·class="inline">erl</code>·command·line·argument | 3233 | of·different·sizes.</p><p>Own·Id:·OTP-16454</p></li><li><p>Changed·the·behaviour·of·passing·the·<code·class="inline">erl</code>·command·line·argument |
| 3234 | <a·href="erl_cmd.html#async_thread_pool_size"><code·class="inline">+A·0</code></a>·to·silently·imply·<code·class="inline">+A·1</code>.·That·is, | 3234 | <a·href="erl_cmd.html#async_thread_pool_size"><code·class="inline">+A·0</code></a>·to·silently·imply·<code·class="inline">+A·1</code>.·That·is, |
| Offset 10935, 20 lines modified | Offset 10935, 20 lines modified | ||
| 10935 | <ul><li><p>Previously·<a·href="erlang.html#unlink/1"><code·class="inline">unlink/1</code></a>·and·<a·href="erlang.html#demonitor/2"><code·class="inline">erlang:demonitor/2</code></a>·behaved | 10935 | <ul><li><p>Previously·<a·href="erlang.html#unlink/1"><code·class="inline">unlink/1</code></a>·and·<a·href="erlang.html#demonitor/2"><code·class="inline">erlang:demonitor/2</code></a>·behaved |
| 10936 | completely·asynchronous.·This·had·one·undesirable·effect,·though.·You·could | 10936 | completely·asynchronous.·This·had·one·undesirable·effect,·though.·You·could |
| 10937 | never·know·when·you·were·guaranteed·<em>not</em>·to·be·affected·by·a·link·that·you | 10937 | never·know·when·you·were·guaranteed·<em>not</em>·to·be·affected·by·a·link·that·you |
| 10938 | had·unlinked·or·a·monitor·that·you·had·demonitored.</p><p>The·new·behavior·of·<a·href="erlang.html#unlink/1"><code·class="inline">unlink/1</code></a>·and·<a·href="erlang.html#demonitor/2"><code·class="inline">erlang:demonitor/2</code></a>·can·be | 10938 | had·unlinked·or·a·monitor·that·you·had·demonitored.</p><p>The·new·behavior·of·<a·href="erlang.html#unlink/1"><code·class="inline">unlink/1</code></a>·and·<a·href="erlang.html#demonitor/2"><code·class="inline">erlang:demonitor/2</code></a>·can·be |
| 10939 | viewed·as·two·operations·performed·atomically.·Asynchronously·send·an·unlink | 10939 | viewed·as·two·operations·performed·atomically.·Asynchronously·send·an·unlink |
| 10940 | signal·or·a·demonitor·signal,·and·ignore·any·future·results·of·the·link·or | 10940 | signal·or·a·demonitor·signal,·and·ignore·any·future·results·of·the·link·or |
| 10941 | monitor.</p><p><em>NOTE</em>:·This·change·can·cause·some·obscure·code·to·fail·which·previously·did | 10941 | monitor.</p><p><em>NOTE</em>:·This·change·can·cause·some·obscure·code·to·fail·which·previously·did |
| 10942 | not.·For·example,·the·following·code·might·hang:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">············</span><span·class="n">Mon</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">monitor</span><span·class="p"·data-group-id=" | 10942 | not.·For·example,·the·following·code·might·hang:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">············</span><span·class="n">Mon</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">monitor</span><span·class="p"·data-group-id="7331514843-1">(</span><span·class="ss">process</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pid</span><span·class="p"·data-group-id="7331514843-1">)</span><span·class="p">,</span><span·class="w"> |
| 10943 | ············</span><span·class="c1">%%·...</span><span·class="w"> | 10943 | ············</span><span·class="c1">%%·...</span><span·class="w"> |
| 10944 | ············</span><span·class="nf">exit</span><span·class="p"·data-group-id=" | 10944 | ············</span><span·class="nf">exit</span><span·class="p"·data-group-id="7331514843-2">(</span><span·class="n">Pid</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">bang</span><span·class="p"·data-group-id="7331514843-2">)</span><span·class="p">,</span><span·class="w"> |
| 10945 | ············</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">demonitor</span><span·class="p"·data-group-id=" | 10945 | ············</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">demonitor</span><span·class="p"·data-group-id="7331514843-3">(</span><span·class="n">Mon</span><span·class="p"·data-group-id="7331514843-3">)</span><span·class="p">,</span><span·class="w"> |
| 10946 | ············</span><span·class="k">receive</span><span·class="w"> | 10946 | ············</span><span·class="k">receive</span><span·class="w"> |
| 10947 | ················</span><span·class="p"·data-group-id=" | 10947 | ················</span><span·class="p"·data-group-id="7331514843-4">{</span><span·class="ss">'DOWN'</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Mon</span><span·class="w">·</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">process</span><span·class="p">,</[·...·truncated·by·diffoscope;·len:·168,·SHA:·83f02f15eb85d5d34088fbe759dfcf97422cb6d4df3e14bfac98a1888bc47ed9·...·]-4">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="w"> |
| 10948 | ············</span><span·class="c1">%%·We·were·previously·guaranteed·to·get·a·down·message</span><span·class="w"> | 10948 | ············</span><span·class="c1">%%·We·were·previously·guaranteed·to·get·a·down·message</span><span·class="w"> |
| 10949 | ············</span><span·class="c1">%%·(since·we·exited·the·process·ourself),·so·we·could</span><span·class="w"> | 10949 | ············</span><span·class="c1">%%·(since·we·exited·the·process·ourself),·so·we·could</span><span·class="w"> |
| 10950 | ············</span><span·class="c1">%%·in·this·case·leave·out:</span><span·class="w"> | 10950 | ············</span><span·class="c1">%%·in·this·case·leave·out:</span><span·class="w"> |
| 10951 | ············</span><span·class="c1">%%·after·0·->·ok</span><span·class="w"> | 10951 | ············</span><span·class="c1">%%·after·0·->·ok</span><span·class="w"> |
| 10952 | ············</span><span·class="k">end</span><span·class="p">,</span></code></pre><p>*<strong>·POTENTIAL·INCOMPATIBILITY·*</strong></p><p>Own·Id:·OTP-5772</p></li><li><p>Two·bugs·fixed:·If·the·environment·variable·<code·class="inline">ERL_FLAGS</code>·was·set,·its·contents | 10952 | ············</span><span·class="k">end</span><span·class="p">,</span></code></pre><p>*<strong>·POTENTIAL·INCOMPATIBILITY·*</strong></p><p>Own·Id:·OTP-5772</p></li><li><p>Two·bugs·fixed:·If·the·environment·variable·<code·class="inline">ERL_FLAGS</code>·was·set,·its·contents |
| 10953 | would·be·appended·to·the·end·of·the·command·line·even·if·the·command·line·had | 10953 | would·be·appended·to·the·end·of·the·command·line·even·if·the·command·line·had |
| 10954 | an·<code·class="inline">-extra</code>·options.·Changed·to·place·the·options·from·<code·class="inline">ERL_FLAGS</code>·just·before | 10954 | an·<code·class="inline">-extra</code>·options.·Changed·to·place·the·options·from·<code·class="inline">ERL_FLAGS</code>·just·before |
| Offset 196, 17 lines modified | Offset 196, 17 lines modified | ||
| 196 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 196 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 197 | ··</a> | 197 | ··</a> |
| 198 | ··<span·class="text">Example</span> | 198 | ··<span·class="text">Example</span> |
| 199 | </h2> | 199 | </h2> |
| 200 | <p>The·following·example·shows·how·lock·contention·for·ETS·tables·can·be·minimized | 200 | <p>The·following·example·shows·how·lock·contention·for·ETS·tables·can·be·minimized |
| 201 | by·having·one·ETS·table·for·each·scheduler.·The·table·identifiers·for·the·ETS | 201 | by·having·one·ETS·table·for·each·scheduler.·The·table·identifiers·for·the·ETS |
| 202 | tables·are·stored·as·a·single·persistent·term:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">····</span><span·class="c1">%%·There·is·one·ETS·table·for·each·scheduler.</span><span·class="w"> | 202 | tables·are·stored·as·a·single·persistent·term:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">····</span><span·class="c1">%%·There·is·one·ETS·table·for·each·scheduler.</span><span·class="w"> |
| 203 | ····</span><span·class="n">Sid</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">system_info</span><span·class="p"·data-group-id=" | 203 | ····</span><span·class="n">Sid</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">system_info</span><span·class="p"·data-group-id="6853317268-1">(</span><span·class="ss">scheduler_id</span><span·class="p"·data-group-id="6853317268-1">)</span><span·class="p">,</span><span·class="w"> |
| 204 | ····</span><span·class="n">Tid</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">element</span><span·class="p"·data-group-id=" | 204 | ····</span><span·class="n">Tid</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">element</span><span·class="p"·data-group-id="6853317268-2">(</span><span·class="n">Sid</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">persistent_term</span><span·class="p">:</span><span·class="nf">get</span><span·class="p"·data-group-id="6853317268-3">(</span><span·class="o">?[·...·truncated·by·diffoscope;·len:·129,·SHA:·3dd14e1326a6b60c241129db85a8fae815ff0cdc22ecc9ac11f4a92a815da8dd·...·]8-2">)</span><span·class="p">,</span><span·class="w"> |
| 205 | ····</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">update_counter</span><span·class="p"·data-group-id=" | 205 | ····</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">update_counter</span><span·class="p"·data-group-id="6853317268-4">(</span><span·class="n">Tid</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Key</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="6853317268-4">)</span><span·class="p">.</span></code></pre> |
| 206 | ····</section> | 206 | ····</section> |
| 207 | </div> | 207 | </div> |
| 208 | ··<section·id="summary"·class="details-list"> | 208 | ··<section·id="summary"·class="details-list"> |
| 209 | ····<h1·class="section-heading"> | 209 | ····<h1·class="section-heading"> |
| 210 | ······<a·class="hover-link"·href="#summary"> | 210 | ······<a·class="hover-link"·href="#summary"> |
| Offset 225, 20 lines modified | Offset 225, 20 lines modified | ||
| 225 | (alloc_util·and·the·different·strategies).·However,·that·would·not·be | 225 | (alloc_util·and·the·different·strategies).·However,·that·would·not·be |
| 226 | as·straight·forward·as·one·can·think·and·can·also·waste·quite·a·lot·of | 226 | as·straight·forward·as·one·can·think·and·can·also·waste·quite·a·lot·of |
| 227 | memory·as·it·uses·prepended·block·headers.·The·granularity·of·the | 227 | memory·as·it·uses·prepended·block·headers.·The·granularity·of·the |
| 228 | super·carrier·is·one·memory·page·(usually·4kb).·We·want·to·allocate | 228 | super·carrier·is·one·memory·page·(usually·4kb).·We·want·to·allocate |
| 229 | and·free·entire·pages·and·we·don't·want·to·waste·an·entire·page·just | 229 | and·free·entire·pages·and·we·don't·want·to·waste·an·entire·page·just |
| 230 | to·hold·the·block·header·of·the·following·pages.</p><p>Instead·we·store·the·meta·information·about·all·the·free·segments·in·a | 230 | to·hold·the·block·header·of·the·following·pages.</p><p>Instead·we·store·the·meta·information·about·all·the·free·segments·in·a |
| 231 | dedicated·area·apart·from·the·<code·class="inline">sa</code>·and·<code·class="inline">sua</code>·areas.·Every·free·segment·is | 231 | dedicated·area·apart·from·the·<code·class="inline">sa</code>·and·<code·class="inline">sua</code>·areas.·Every·free·segment·is |
| 232 | represented·by·a·descriptor·struct·(<code·class="inline">ErtsFreeSegDesc</code>).</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">typedef</span><span·class="w">·</span><span·class="ss">struct</span><span·class="w">·</span><span·class="p"·data-group-id=" | 232 | represented·by·a·descriptor·struct·(<code·class="inline">ErtsFreeSegDesc</code>).</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">typedef</span><span·class="w">·</span><span·class="ss">struct</span><span·class="w">·</span><span·class="p"·data-group-id="5942284590-1">{</span><span·class="w"> |
| 233 | ····</span><span·class="n">RBTNode</span><span·class="w">·</span><span·class="ss">snode</span><span·class="p">;</span><span·class="w">······</span><span·class="o">/</span><span·class="o">*</span><span·class="w">·</span><span·class="nb">node</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">'stree'</span><span·class="w">·</span><span·class="o">*</span><span·class="o">/</span><span·class="w"> | 233 | ····</span><span·class="n">RBTNode</span><span·class="w">·</span><span·class="ss">snode</span><span·class="p">;</span><span·class="w">······</span><span·class="o">/</span><span·class="o">*</span><span·class="w">·</span><span·class="nb">node</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">'stree'</span><span·class="w">·</span><span·class="o">*</span><span·class="o">/</span><span·class="w"> |
| 234 | ····</span><span·class="n">RBTNode</span><span·class="w">·</span><span·class="ss">anode</span><span·class="p">;</span><span·class="w">······</span><span·class="o">/</span><span·class="o">*</span><span·class="w">·</span><span·class="nb">node</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">'atree'</span><span·class="w">·</span><span·class="o">*</span><span·class="o">/</span><span·class="w"> | 234 | ····</span><span·class="n">RBTNode</span><span·class="w">·</span><span·class="ss">anode</span><span·class="p">;</span><span·class="w">······</span><span·class="o">/</span><span·class="o">*</span><span·class="w">·</span><span·class="nb">node</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">'atree'</span><span·class="w">·</span><span·class="o">*</span><span·class="o">/</span><span·class="w"> |
| 235 | ····</span><span·class="ss">char</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">start</span><span·class="p">;</span><span·class="w"> | 235 | ····</span><span·class="ss">char</span><span·class="o">*</span><span·class="w">·</span><span·class="ss">start</span><span·class="p">;</span><span·class="w"> |
| 236 | ····</span><span·class="ss">char</span><span·class="o">*</span><span·class="w">·</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> | 236 | ····</span><span·class="ss">char</span><span·class="o">*</span><span·class="w">·</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> |
| 237 | </span><span·class="p"·data-group-id=" | 237 | </span><span·class="p"·data-group-id="5942284590-1">}</span><span·class="n">ErtsFreeSegDesc</span><span·class="p">;</span></code></pre><p>To·find·the·smallest·free·segment·that·will·satisfy·a·carrier·allocation |
| 238 | (best·fit),·the·free·segments·are·organized·in·a·tree·sorted·by | 238 | (best·fit),·the·free·segments·are·organized·in·a·tree·sorted·by |
| 239 | size·(<code·class="inline">stree</code>).·We·search·in·this·tree·at·allocation.·If·no·free·segment·of | 239 | size·(<code·class="inline">stree</code>).·We·search·in·this·tree·at·allocation.·If·no·free·segment·of |
| 240 | sufficient·size·was·found,·the·area·(<code·class="inline">sa</code>·or·<code·class="inline">sua</code>)·is·instead·expanded. | 240 | sufficient·size·was·found,·the·area·(<code·class="inline">sa</code>·or·<code·class="inline">sua</code>)·is·instead·expanded. |
| 241 | If·two·or·more·free·segments·with·equal·size·exist,·the·one·at·lowest | 241 | If·two·or·more·free·segments·with·equal·size·exist,·the·one·at·lowest |
| 242 | address·is·chosen·for·<code·class="inline">sa</code>·and·highest·address·for·<code·class="inline">sua</code>.</p><p>At·carrier·deallocation,·we·want·to·coalesce·with·any·adjacent·free | 242 | address·is·chosen·for·<code·class="inline">sa</code>·and·highest·address·for·<code·class="inline">sua</code>.</p><p>At·carrier·deallocation,·we·want·to·coalesce·with·any·adjacent·free |
| 243 | segments,·to·form·one·large·free·segment.·To·do·that,·all·free | 243 | segments,·to·form·one·large·free·segment.·To·do·that,·all·free |
| 244 | segments·are·also·organized·in·a·tree·sorted·in·address·order·(<code·class="inline">atree</code>).</p><p>So,·in·total·we·keep·four·trees·of·free·descriptors·for·the·super | 244 | segments·are·also·organized·in·a·tree·sorted·in·address·order·(<code·class="inline">atree</code>).</p><p>So,·in·total·we·keep·four·trees·of·free·descriptors·for·the·super |
| Offset 560, 17 lines modified | Offset 560, 17 lines modified | ||
| 560 | the·event·occurs.</p></section><section·role="note"·class="admonition·tip"><h4·class="admonition-title·tip">Do</h4><p>Determine·the·order·of·events·by·saving·the·integer·returned·by | 560 | the·event·occurs.</p></section><section·role="note"·class="admonition·tip"><h4·class="admonition-title·tip">Do</h4><p>Determine·the·order·of·events·by·saving·the·integer·returned·by |
| 561 | <a·href="erlang.html#unique_integer/1"><code·class="inline">erlang:unique_integer([monotonic])</code></a>·when·the | 561 | <a·href="erlang.html#unique_integer/1"><code·class="inline">erlang:unique_integer([monotonic])</code></a>·when·the |
| 562 | event·occurs.·These·integers·are·strictly·monotonically·ordered·on·current | 562 | event·occurs.·These·integers·are·strictly·monotonically·ordered·on·current |
| 563 | runtime·system·instance·corresponding·to·creation·time.</p></section><h4>Determine·Order·of·Events·with·Time·of·the·Event</h4><section·role="note"·class="admonition·error"><h4·class="admonition-title·error">Dont</h4><p>Determine·the·order·of·events·by·saving·a·time·stamp·with·<a·href="erlang.html#now/0"><code·class="inline">erlang:now/0</code></a>·when | 563 | runtime·system·instance·corresponding·to·creation·time.</p></section><h4>Determine·Order·of·Events·with·Time·of·the·Event</h4><section·role="note"·class="admonition·error"><h4·class="admonition-title·error">Dont</h4><p>Determine·the·order·of·events·by·saving·a·time·stamp·with·<a·href="erlang.html#now/0"><code·class="inline">erlang:now/0</code></a>·when |
| 564 | the·event·occurs.</p></section><section·role="note"·class="admonition·tip"><h4·class="admonition-title·tip">Do</h4><p>Determine·the·order·of·events·by·saving·a·tuple·containing | 564 | the·event·occurs.</p></section><section·role="note"·class="admonition·tip"><h4·class="admonition-title·tip">Do</h4><p>Determine·the·order·of·events·by·saving·a·tuple·containing |
| 565 | <a·href="erlang.html#monotonic_time/0">monotonic·time</a>·and·a | 565 | <a·href="erlang.html#monotonic_time/0">monotonic·time</a>·and·a |
| 566 | <a·href="erlang.html#unique_integer/1">strictly·monotonically·increasing·integer</a>·as | 566 | <a·href="erlang.html#unique_integer/1">strictly·monotonically·increasing·integer</a>·as |
| 567 | follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Time</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">monotonic_time</span><span·class="p"·data-group-id=" | 567 | follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Time</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">monotonic_time</span><span·class="p"·data-group-id="5849434544-1">(</span><span·class="p"·data-group-id="5849434544-1">)</span><span·class="p">,</span><span·class="w"> |
| 568 | </span><span·class="n">UMI</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">unique_integer</span><span·class="p"·data-group-id=" | 568 | </span><span·class="n">UMI</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">unique_integer</span><span·class="p"·data-group-id="5849434544-2">(</span><span·class="p"·data-group-id="5849434544-3">[</span><span·class="ss">monotonic</span><span·class="p"·data-group-id="5849434544-3">]</span><span·class="p"·data-group-id="5849434544-2">)</span><span·class="p">,</span><span·class="w"> |
| 569 | </span><span·class="n">EventTag</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 569 | </span><span·class="n">EventTag</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="5849434544-4">{</span><span·class="n">Time</span><span·class="p">,</span><span·class="w">·</span><span·class="n">UMI</span><span·class="p"·data-group-id="5849434544-4">}</span></code></pre><p>These·tuples·are·strictly·monotonically·ordered·on·the·current·runtime·system |
| 570 | instance·according·to·creation·time.·It·is·important·that·the·monotonic·time | 570 | instance·according·to·creation·time.·It·is·important·that·the·monotonic·time |
| 571 | is·in·the·first·element·(the·most·significant·element·when·comparing | 571 | is·in·the·first·element·(the·most·significant·element·when·comparing |
| 572 | two-tuples).·Using·the·monotonic·time·in·the·tuples,·you·can·calculate·time | 572 | two-tuples).·Using·the·monotonic·time·in·the·tuples,·you·can·calculate·time |
| 573 | between·events.</p><p>If·you·are·interested·in·Erlang·system·time·at·the·time·when·the·event | 573 | between·events.</p><p>If·you·are·interested·in·Erlang·system·time·at·the·time·when·the·event |
| 574 | occurred,·you·can·also·save·the·time·offset·before·or·after·saving·the·events | 574 | occurred,·you·can·also·save·the·time·offset·before·or·after·saving·the·events |
| 575 | using·<a·href="erlang.html#time_offset/0"><code·class="inline">erlang:time_offset/0</code></a>.·Erlang·monotonic·time·added·with·the·time·offset | 575 | using·<a·href="erlang.html#time_offset/0"><code·class="inline">erlang:time_offset/0</code></a>.·Erlang·monotonic·time·added·with·the·time·offset |
| 576 | corresponds·to·Erlang·system·time.</p><p>If·you·are·executing·in·a·mode·where·time·offset·can·change,·and·you·want·to | 576 | corresponds·to·Erlang·system·time.</p><p>If·you·are·executing·in·a·mode·where·time·offset·can·change,·and·you·want·to |
| Offset 145, 31 lines modified | Offset 145, 31 lines modified | ||
| 145 | on·functions·that·never·return,·as·each·call·pushes·a·frame·that·will | 145 | on·functions·that·never·return,·as·each·call·pushes·a·frame·that·will |
| 146 | never·be·removed.</p><p>Another·limitation·is·that·since·the·breakpoint·is·in·the·<em>callee</em>·and·not | 146 | never·be·removed.</p><p>Another·limitation·is·that·since·the·breakpoint·is·in·the·<em>callee</em>·and·not |
| 147 | the·<em>caller</em>,·we're·limited·to·the·information·we·have·on·function·ingress. | 147 | the·<em>caller</em>,·we're·limited·to·the·information·we·have·on·function·ingress. |
| 148 | This·means·that·we·can't·actually·tell·who·called·us:·since·we're·limited | 148 | This·means·that·we·can't·actually·tell·who·called·us:·since·we're·limited |
| 149 | to·inspecting·the·stack·we·can·only·say·where·we're·<em>going·to·return·to</em>, | 149 | to·inspecting·the·stack·we·can·only·say·where·we're·<em>going·to·return·to</em>, |
| 150 | which·is·not·quite·the·same·thing.</p><p>As·an·illustration,·when·the·<code·class="inline">caller</code>·option·is·enabled·all·trace·messages | 150 | which·is·not·quite·the·same·thing.</p><p>As·an·illustration,·when·the·<code·class="inline">caller</code>·option·is·enabled·all·trace·messages |
| 151 | from·<code·class="inline">bar/1</code>··will·say·that·they·were·called·from·<code·class="inline">foo/0</code>,·even·though·it | 151 | from·<code·class="inline">bar/1</code>··will·say·that·they·were·called·from·<code·class="inline">foo/0</code>,·even·though·it |
| 152 | went·through·a·bunch·of·other·functions·on·the·way:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">foo</span><span·class="p"·data-group-id=" | 152 | went·through·a·bunch·of·other·functions·on·the·way:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">foo</span><span·class="p"·data-group-id="9677182167-1">(</span><span·class="p"·data-group-id="9677182167-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 153 | ····</span><span·class="nf">lots</span><span·class="p"·data-group-id=" | 153 | ····</span><span·class="nf">lots</span><span·class="p"·data-group-id="9677182167-2">(</span><span·class="p"·data-group-id="9677182167-2">)</span><span·class="p">,</span><span·class="w"> |
| 154 | ····</span><span·class="ss">ok</span><span·class="p">.</span><span·class="w"> | 154 | ····</span><span·class="ss">ok</span><span·class="p">.</span><span·class="w"> |
| 155 | </span><span·class="nf">lots</span><span·class="p"·data-group-id=" | 155 | </span><span·class="nf">lots</span><span·class="p"·data-group-id="9677182167-3">(</span><span·class="p"·data-group-id="9677182167-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 156 | ····</span><span·class="nf">'of'</span><span·class="p"·data-group-id=" | 156 | ····</span><span·class="nf">'of'</span><span·class="p"·data-group-id="9677182167-4">(</span><span·class="p"·data-group-id="9677182167-4">)</span><span·class="p">.</span><span·class="w"> |
| 157 | </span><span·class="nf">'of'</span><span·class="p"·data-group-id=" | 157 | </span><span·class="nf">'of'</span><span·class="p"·data-group-id="9677182167-5">(</span><span·class="p"·data-group-id="9677182167-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 158 | ····</span><span·class="nf">indirections</span><span·class="p"·data-group-id=" | 158 | ····</span><span·class="nf">indirections</span><span·class="p"·data-group-id="9677182167-6">(</span><span·class="p"·data-group-id="9677182167-6">)</span><span·class="p">.</span><span·class="w"> |
| 159 | </span><span·class="nf">indirections</span><span·class="p"·data-group-id=" | 159 | </span><span·class="nf">indirections</span><span·class="p"·data-group-id="9677182167-7">(</span><span·class="p"·data-group-id="9677182167-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 160 | ····</span><span·class="nf">bar</span><span·class="p"·data-group-id=" | 160 | ····</span><span·class="nf">bar</span><span·class="p"·data-group-id="9677182167-8">(</span><span·class="mi">10</span><span·class="p"·data-group-id="9677182167-8">)</span><span·class="p">.</span><span·class="w"> |
| 161 | </span><span·class="nf">bar</span><span·class="p"·data-group-id=" | 161 | </span><span·class="nf">bar</span><span·class="p"·data-group-id="9677182167-9">(</span><span·class="mi">0</span><span·class="p"·data-group-id="9677182167-9">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 162 | ····</span><span·class="ss">done</span><span·class="p">;</span><span·class="w"> | 162 | ····</span><span·class="ss">done</span><span·class="p">;</span><span·class="w"> |
| 163 | </span><span·class="nf">bar</span><span·class="p"·data-group-id=" | 163 | </span><span·class="nf">bar</span><span·class="p"·data-group-id="9677182167-10">(</span><span·class="n">N</span><span·class="p"·data-group-id="9677182167-10">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 164 | ····</span><span·class="nf">bar</span><span·class="p"·data-group-id=" | 164 | ····</span><span·class="nf">bar</span><span·class="p"·data-group-id="9677182167-11">(</span><span·class="n">N</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="9677182167-11">)</span><span·class="p">.</span></code></pre><h3·id="export-tracing"·class="section-heading"> |
| 165 | ··<a·href="#export-tracing"·class="hover-link"> | 165 | ··<a·href="#export-tracing"·class="hover-link"> |
| 166 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 166 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 167 | ··</a> | 167 | ··</a> |
| 168 | ··<span·class="text">Export·tracing</span> | 168 | ··<span·class="text">Export·tracing</span> |
| 169 | </h3> | 169 | </h3> |
| 170 | <p>In·the·interpreter,·breakpoints·are·set·inside·the·code·trampoline·for | 170 | <p>In·the·interpreter,·breakpoints·are·set·inside·the·code·trampoline·for |
| 171 | export·entries,·and·their·address·vector·is·updated·to·point·to·them. | 171 | export·entries,·and·their·address·vector·is·updated·to·point·to·them. |
| Offset 129, 26 lines modified | Offset 129, 26 lines modified | ||
| 129 | ····<section·id="moduledoc"> | 129 | ····<section·id="moduledoc"> |
| 130 | <p>zlib·compression·interface.</p><p>This·module·provides·an·API·for·the·zlib·library | 130 | <p>zlib·compression·interface.</p><p>This·module·provides·an·API·for·the·zlib·library |
| 131 | (<a·href="http://www.zlib.net">www.zlib.net</a>).·It·is·used·to·compress·and·decompress | 131 | (<a·href="http://www.zlib.net">www.zlib.net</a>).·It·is·used·to·compress·and·decompress |
| 132 | data.·The·data·format·is·described·by | 132 | data.·The·data·format·is·described·by |
| 133 | <a·href="https://www.ietf.org/rfc/rfc1950.txt">RFC·1950</a>, | 133 | <a·href="https://www.ietf.org/rfc/rfc1950.txt">RFC·1950</a>, |
| 134 | <a·href="https://www.ietf.org/rfc/rfc1951.txt">RFC·1951</a>,·and | 134 | <a·href="https://www.ietf.org/rfc/rfc1951.txt">RFC·1951</a>,·and |
| 135 | <a·href="https://www.ietf.org/rfc/rfc1952.txt">RFC·1952</a>.</p><p>A·typical·(compress)·usage·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Z</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">open</span><span·class="p"·data-group-id=" | 135 | <a·href="https://www.ietf.org/rfc/rfc1952.txt">RFC·1952</a>.</p><p>A·typical·(compress)·usage·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Z</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">open</span><span·class="p"·data-group-id="7240083832-1">(</span><span·class="p"·data-group-id="7240083832-1">)</span><span·class="p">,</span><span·class="w"> |
| 136 | </span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">deflateInit</span><span·class="p"·data-group-id=" | 136 | </span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">deflateInit</span><span·class="p"·data-group-id="7240083832-2">(</span><span·class="n">Z</span><span·class="p">,</span><span·class="ss">default</span><span·class="p"·data-group-id="7240083832-2">)</span><span·class="p">,</span><span·class="w"> |
| 137 | </span><span·class="n">Compress</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 137 | </span><span·class="n">Compress</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="7240083832-3">(</span><span·class="ss">end_of_data</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">Cont</span><span·class="p"·data-group-id="7240083832-3">)</span><span·class="w">·</span><span·class="p">-></[·...·truncated·by·diffoscope;·len:·123,·SHA:·2878dfda55fa114a91a0cc0b981020f1048405b43ff7f9ecb171c61105913d9d·...·]-4">]</span><span·class="p">;</span><span·class="w"> |
| 138 | ··············</span><span·class="p"·data-group-id=" | 138 | ··············</span><span·class="p"·data-group-id="7240083832-5">(</span><span·class="n">Data</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cont</span><span·class="p"·data-group-id="7240083832-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 139 | ·················</span><span·class="p"·data-group-id=" | 139 | ·················</span><span·class="p"·data-group-id="7240083832-6">[</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">deflate</span><span·class="p"·data-group-id="7240083832-7">(</span><span·class="n">Z</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span[·...·truncated·by·diffoscope;·len:·436,·SHA:·f2ad51142388f4e9fca37c3769c7ceefe4c00b988a47b4afa22ba06257372268·...·]-6">]</span><span·class="w"> |
| 140 | ···········</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 140 | ···········</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 141 | </span><span·class="n">Compressed</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Compress</span><span·class="p"·data-group-id=" | 141 | </span><span·class="n">Compressed</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Compress</span><span·class="p"·data-group-id="7240083832-10">(</span><span·class="n">Read</span><span·class="p"·data-group-id="7240083832-11">(</span><span·class="p"·data-group-id="7240083832-11">)</span><span·class="p">,</span><span·class="n">Compress</span><span·class="p"·data-group-id="7240083832-10">)</span><span·class="p">,</span><span·class="w"> |
| 142 | </span><span·class="n">Last</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">deflate</span><span·class="p"·data-group-id=" | 142 | </span><span·class="n">Last</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">deflate</span><span·class="p"·data-group-id="7240083832-12">(</span><span·class="n">Z</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7240083832-13">[</span><span·class="p"·data-group-id="7240083832-13">]</span><span·class="p">,</span><span·class="w">·</span><span[·...·truncated·by·diffoscope;·len:·66,·SHA:·b638b66a9d6a1ba266de1d822ce5248f0e1f889f081a244da91138c8c5fc3a43·...·]-12">)</span><span·class="p">,</span><span·class="w"> |
| 143 | </span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">deflateEnd</span><span·class="p"·data-group-id=" | 143 | </span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">deflateEnd</span><span·class="p"·data-group-id="7240083832-14">(</span><span·class="n">Z</span><span·class="p"·data-group-id="7240083832-14">)</span><span·class="p">,</span><span·class="w"> |
| 144 | </span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id=" | 144 | </span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id="7240083832-15">(</span><span·class="n">Z</span><span·class="p"·data-group-id="7240083832-15">)</span><span·class="p">,</span><span·class="w"> |
| 145 | </span><span·class="nf">list_to_binary</span><span·class="p"·data-group-id=" | 145 | </span><span·class="nf">list_to_binary</span><span·class="p"·data-group-id="7240083832-16">(</span><span·class="p"·data-group-id="7240083832-17">[</span><span·class="n">Compressed</span><span·class="p">|</span><span·class="n">Last</span><span·class="p"·data-group-id="7240083832-17">]</span><span·class="p"·data-group-id="7240083832-16">)</span></code></pre><p>In·all·functions·errors,·<code·class="inline">{'EXIT',{Reason,Backtrace}}</code>,·can·be·thrown,·where |
| 146 | <code·class="inline">Reason</code>·describes·the·error.</p><p>Typical·<code·class="inline">Reason</code>s:</p><ul><li><p><strong><code·class="inline">badarg</code></strong>·-·Bad·argument.</p></li><li><p><strong><code·class="inline">not_initialized</code></strong>·-·The·stream·hasn't·been·initialized,·eg.·if | 146 | <code·class="inline">Reason</code>·describes·the·error.</p><p>Typical·<code·class="inline">Reason</code>s:</p><ul><li><p><strong><code·class="inline">badarg</code></strong>·-·Bad·argument.</p></li><li><p><strong><code·class="inline">not_initialized</code></strong>·-·The·stream·hasn't·been·initialized,·eg.·if |
| 147 | <a·href="#inflateInit/1"><code·class="inline">inflateInit/1</code></a>·wasn't·called·prior·to·a·call·to·<a·href="#inflate/2"><code·class="inline">inflate/2</code></a>.</p></li><li><p><strong><code·class="inline">not_on_controlling_process</code></strong>·-·The·stream·was·used·by·a·process·that | 147 | <a·href="#inflateInit/1"><code·class="inline">inflateInit/1</code></a>·wasn't·called·prior·to·a·call·to·<a·href="#inflate/2"><code·class="inline">inflate/2</code></a>.</p></li><li><p><strong><code·class="inline">not_on_controlling_process</code></strong>·-·The·stream·was·used·by·a·process·that |
| 148 | doesn't·control·it.·Use·<a·href="#set_controlling_process/2"><code·class="inline">set_controlling_process/2</code></a>·if·you·need·to·transfer·a | 148 | doesn't·control·it.·Use·<a·href="#set_controlling_process/2"><code·class="inline">set_controlling_process/2</code></a>·if·you·need·to·transfer·a |
| 149 | stream·to·a·different·process.</p></li><li><p><strong><code·class="inline">data_error</code></strong>·-·The·data·contains·errors.</p></li><li><p><strong><code·class="inline">stream_error</code></strong>·-·Inconsistent·stream·state.</p></li><li><p><strong><code·class="inline">{need_dictionary,Adler32}</code></strong>·-·See·<a·href="#inflate/2"><code·class="inline">inflate/2</code></a>.</p></li></ul> | 149 | stream·to·a·different·process.</p></li><li><p><strong><code·class="inline">data_error</code></strong>·-·The·data·contains·errors.</p></li><li><p><strong><code·class="inline">stream_error</code></strong>·-·Inconsistent·stream·state.</p></li><li><p><strong><code·class="inline">{need_dictionary,Adler32}</code></strong>·-·See·<a·href="#inflate/2"><code·class="inline">inflate/2</code></a>.</p></li></ul> |
| 150 | ····</section> | 150 | ····</section> |
| 151 | </div> | 151 | </div> |
| Offset 827, 19 lines modified | Offset 827, 19 lines modified | ||
| 827 | all·input·data·available·so·far.·Flushing·can·degrade·compression·for·some | 827 | all·input·data·available·so·far.·Flushing·can·degrade·compression·for·some |
| 828 | compression·algorithms;·thus,·use·it·only·when·necessary.</p><p>If·<code·class="inline">Flush</code>·is·set·to·<code·class="inline">full</code>,·all·output·is·flushed·as·with·<code·class="inline">sync</code>,·and·the | 828 | compression·algorithms;·thus,·use·it·only·when·necessary.</p><p>If·<code·class="inline">Flush</code>·is·set·to·<code·class="inline">full</code>,·all·output·is·flushed·as·with·<code·class="inline">sync</code>,·and·the |
| 829 | compression·state·is·reset·so·that·decompression·can·restart·from·this·point·if | 829 | compression·state·is·reset·so·that·decompression·can·restart·from·this·point·if |
| 830 | previous·compressed·data·has·been·damaged·or·if·random·access·is·desired.·Using | 830 | previous·compressed·data·has·been·damaged·or·if·random·access·is·desired.·Using |
| 831 | <code·class="inline">full</code>·too·often·can·seriously·degrade·the·compression.</p><p>If·<code·class="inline">Flush</code>·is·set·to·<code·class="inline">finish</code>,·pending·input·is·processed,·pending·output·is | 831 | <code·class="inline">full</code>·too·often·can·seriously·degrade·the·compression.</p><p>If·<code·class="inline">Flush</code>·is·set·to·<code·class="inline">finish</code>,·pending·input·is·processed,·pending·output·is |
| 832 | flushed,·and·<a·href="#deflate/3"><code·class="inline">deflate/3</code></a>·returns.·Afterwards·the·only·possible | 832 | flushed,·and·<a·href="#deflate/3"><code·class="inline">deflate/3</code></a>·returns.·Afterwards·the·only·possible |
| 833 | operations·on·the·stream·are·<a·href="#deflateReset/1"><code·class="inline">deflateReset/1</code></a>·or·<a·href="#deflateEnd/1"><code·class="inline">deflateEnd/1</code></a>.</p><p><code·class="inline">Flush</code>·can·be·set·to·<code·class="inline">finish</code>·immediately·after | 833 | operations·on·the·stream·are·<a·href="#deflateReset/1"><code·class="inline">deflateReset/1</code></a>·or·<a·href="#deflateEnd/1"><code·class="inline">deflateEnd/1</code></a>.</p><p><code·class="inline">Flush</code>·can·be·set·to·<code·class="inline">finish</code>·immediately·after |
| 834 | <a·href="#deflateInit/1"><code·class="inline">deflateInit</code></a>·if·all·compression·is·to·be·done·in·one·step.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">deflateInit</span><span·class="p"·data-group-id=" | 834 | <a·href="#deflateInit/1"><code·class="inline">deflateInit</code></a>·if·all·compression·is·to·be·done·in·one·step.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">deflateInit</span><span·class="p"·data-group-id="7788726259-1">(</span><span·class="n">Z</span><span·class="p"·data-group-id="7788726259-1">)</span><span·class="p">,</span><span·class="w"> |
| 835 | </span><span·class="n">B1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">deflate</span><span·class="p"·data-group-id=" | 835 | </span><span·class="n">B1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">deflate</span><span·class="p"·data-group-id="7788726259-2">(</span><span·class="n">Z</span><span·class="p">,</span><span·class="n">Data</span><span·class="p"·data-group-id="7788726259-2">)</span><span·class="p">,</span><span·class="w"> |
| 836 | </span><span·class="n">B2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">deflate</span><span·class="p"·data-group-id=" | 836 | </span><span·class="n">B2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">deflate</span><span·class="p"·data-group-id="7788726259-3">(</span><span·class="n">Z</span><span·class="p">,</span><span·class="p"·data-group-id="7788726259-4"><<</span><span·class="w">·</span><span·class="p"·data-group-id="7788726259-4">>></span><span·class="p">,</span><span·class="ss">f[·...·truncated·by·diffoscope;·len:·53,·SHA:·de8ea0f6dbc074e7fc147882d5554537d1e42367b844ee1b592078096104b4f2·...·]-3">)</span><span·class="p">,</span><span·class="w"> |
| 837 | </span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">deflateEnd</span><span·class="p"·data-group-id=" | 837 | </span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">deflateEnd</span><span·class="p"·data-group-id="7788726259-5">(</span><span·class="n">Z</span><span·class="p"·data-group-id="7788726259-5">)</span><span·class="p">,</span><span·class="w"> |
| 838 | </span><span·class="nf">list_to_binary</span><span·class="p"·data-group-id=" | 838 | </span><span·class="nf">list_to_binary</span><span·class="p"·data-group-id="7788726259-6">(</span><span·class="p"·data-group-id="7788726259-7">[</span><span·class="n">B1</span><span·class="p">,</span><span·class="n">B2</span><span·class="p"·data-group-id="7788726259-7">]</span><span·class="p"·data-group-id="7788726259-6">)</span></code></pre> |
| 839 | ··</section> | 839 | ··</section> |
| 840 | </section> | 840 | </section> |
| 841 | <section·class="detail"·id="deflateEnd/1"> | 841 | <section·class="detail"·id="deflateEnd/1"> |
| 842 | ··<div·class="detail-header"> | 842 | ··<div·class="detail-header"> |
| 843 | ····<a·href="#deflateEnd/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 843 | ····<a·href="#deflateEnd/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 844 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 844 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 1349, 28 lines modified | Offset 1349, 28 lines modified | ||
| 1349 | <p>Initializes·the·decompression·dictionary·from·the·specified·uncompressed·byte | 1349 | <p>Initializes·the·decompression·dictionary·from·the·specified·uncompressed·byte |
| 1350 | sequence.</p><p>This·function·must·be·called·as·a·response·to·an·inflate·operation | 1350 | sequence.</p><p>This·function·must·be·called·as·a·response·to·an·inflate·operation |
| 1351 | (eg.·<a·href="#safeInflate/2"><code·class="inline">safeInflate/2</code></a>)·returning·<code·class="inline">{need_dictionary,Adler,Output}</code>·or·in·the·case | 1351 | (eg.·<a·href="#safeInflate/2"><code·class="inline">safeInflate/2</code></a>)·returning·<code·class="inline">{need_dictionary,Adler,Output}</code>·or·in·the·case |
| 1352 | of·deprecated·functions,·throwing·an | 1352 | of·deprecated·functions,·throwing·an |
| 1353 | <code·class="inline">{'EXIT',{{need_dictionary,Adler},_StackTrace}}</code>·exception.</p><p>The·dictionary·chosen·by·the·compressor·can·be·determined·from·the·Adler·value | 1353 | <code·class="inline">{'EXIT',{{need_dictionary,Adler},_StackTrace}}</code>·exception.</p><p>The·dictionary·chosen·by·the·compressor·can·be·determined·from·the·Adler·value |
| 1354 | returned·or·thrown·by·the·call·to·the·inflate·function.·The·compressor·and | 1354 | returned·or·thrown·by·the·call·to·the·inflate·function.·The·compressor·and |
| 1355 | decompressor·must·use·the·same·dictionary·(See·<a·href="#deflateSetDictionary/2"><code·class="inline">deflateSetDictionary/2</code></a>).</p><p>After·setting·the·dictionary·the·inflate·operation·should·be·retried·without·new | 1355 | decompressor·must·use·the·same·dictionary·(See·<a·href="#deflateSetDictionary/2"><code·class="inline">deflateSetDictionary/2</code></a>).</p><p>After·setting·the·dictionary·the·inflate·operation·should·be·retried·without·new |
| 1356 | input.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">deprecated_unpack</span><span·class="p"·data-group-id=" | 1356 | input.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">deprecated_unpack</span><span·class="p"·data-group-id="4966480222-1">(</span><span·class="n">Z</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Compressed</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Dict</span><span·class="p"·data-group-id="4966480222-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1357 | ·····</span><span·class="k">case</span><span·class="w">·</span><span·class="k">catch</span><span·class="w">·</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">inflate</span><span·class="p"·data-group-id=" | 1357 | ·····</span><span·class="k">case</span><span·class="w">·</span><span·class="k">catch</span><span·class="w">·</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">inflate</span><span·class="p"·data-group-id="4966480222-2">(</span><span·class="n">Z</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Compressed</span><span·class="p"·data-group-id="4966480222-2">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 1358 | ··········</span><span·class="p"·data-group-id=" | 1358 | ··········</span><span·class="p"·data-group-id="4966480222-3">{</span><span·class="ss">'EXIT'</span><span·class="p">,</span><span·class="p"·data-group-id="4966480222-4">{</span><span·class="p"·data-group-id="4966480222-5">{</span><span·class="ss">need_dictionary</span><span·class="p">,</span><sp[·...·truncated·by·diffoscope;·len:·245,·SHA:·103f02df8e6a59a0a4af3bce19feefc2d72c1806a1e9faaa99286975dcef3f74·...·]-3">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1359 | ·················</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">inflateSetDictionary</span><span·class="p"·data-group-id=" | 1359 | ·················</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">inflateSetDictionary</span><span·class="p"·data-group-id="4966480222-6">(</span><span·class="n">Z</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Dict</span><span·class="p"·data-group-id="4966480222-6">)</span><span·class="p">,</span><span·class="w"> |
| 1360 | ·················</span><span·class="n">Uncompressed</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">inflate</span><span·class="p"·data-group-id=" | 1360 | ·················</span><span·class="n">Uncompressed</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">inflate</span><span·class="p"·data-group-id="4966480222-7">(</span><span·class="n">Z</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4966480222-8">[</span><span·class="p"·data-group-id="4966480222-8">]</span><span·class="p"·data-group-id="4966480222-7">)</span><span·class="p">;</span><span·class="w"> |
| 1361 | ··········</span><span·class="n">Uncompressed</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 1361 | ··········</span><span·class="n">Uncompressed</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1362 | ·················</span><span·class="n">Uncompressed</span><span·class="w"> | 1362 | ·················</span><span·class="n">Uncompressed</span><span·class="w"> |
| 1363 | ·····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 1363 | ·····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 1364 | </span><span·class="nf">new_unpack</span><span·class="p"·data-group-id=" | 1364 | </span><span·class="nf">new_unpack</span><span·class="p"·data-group-id="4966480222-9">(</span><span·class="n">Z</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Compressed</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Dict</span><span·class="p"·data-group-id="4966480222-9">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1365 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">inflate</span><span·class="p"·data-group-id=" | 1365 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">inflate</span><span·class="p"·data-group-id="4966480222-10">(</span><span·class="n">Z</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Compressed</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4966480222-11">[</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·300,·SHA:·707a1b4121df67b5492ca143e687f98364bd3adc7ff804a156102e820c6f776a·...·]-10">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 1366 | ········</span><span·class="p"·data-group-id=" | 1366 | ········</span><span·class="p"·data-group-id="4966480222-13">{</span><span·class="ss">need_dictionary</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">DictId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Output</span><span·class="p"·[·...·truncated·by·diffoscope;·len:·25,·SHA:·1c9d0052f851d43a3906471928f1cc25e3772c9739215580f890f6d42b03e4a3·...·]-13">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1367 | ············</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">inflateSetDictionary</span><span·class="p"·data-group-id=" | 1367 | ············</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">inflateSetDictionary</span><span·class="p"·data-group-id="4966480222-14">(</span><span·class="n">Z</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Dict</span><span·class="p"·data-group-id="4966480222-14">)</span><span·class="p">,</span><span·class="w"> |
| 1368 | ············</span><span·class="p"·data-group-id=" | 1368 | ············</span><span·class="p"·data-group-id="4966480222-15">[</span><span·class="n">Output</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">inflate</span><span·class="p"·data-group-id="4966480222-16">(</[·...·truncated·by·diffoscope;·len:·280,·SHA:·b5a6503c42e5dc8588af4b03180f2c413e45614f390299f19a31d645116b97a6·...·]-15">]</span><span·class="p">;</span><span·class="w"> |
| 1369 | ········</span><span·class="n">Uncompressed</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 1369 | ········</span><span·class="n">Uncompressed</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1370 | ············</span><span·class="n">Uncompressed</span><span·class="w"> | 1370 | ············</span><span·class="n">Uncompressed</span><span·class="w"> |
| 1371 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre> | 1371 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre> |
| 1372 | ··</section> | 1372 | ··</section> |
| 1373 | </section> | 1373 | </section> |
| 1374 | <section·class="detail"·id="open/0"> | 1374 | <section·class="detail"·id="open/0"> |
| Offset 1434, 26 lines modified | Offset 1434, 26 lines modified | ||
| 1434 | implementation-defined·threshold.·It's·useful·when·decompressing·untrusted·input | 1434 | implementation-defined·threshold.·It's·useful·when·decompressing·untrusted·input |
| 1435 | which·could·have·been·maliciously·crafted·to·expand·until·the·system·runs·out·of | 1435 | which·could·have·been·maliciously·crafted·to·expand·until·the·system·runs·out·of |
| 1436 | memory.</p><p>This·function·returns·<code·class="inline">{continue·|·finished,·Output}</code>,·where·Output·is·the·data | 1436 | memory.</p><p>This·function·returns·<code·class="inline">{continue·|·finished,·Output}</code>,·where·Output·is·the·data |
| 1437 | that·was·decompressed·in·this·call.·New·input·can·be·queued·up·on·each·call·if | 1437 | that·was·decompressed·in·this·call.·New·input·can·be·queued·up·on·each·call·if |
| 1438 | desired,·and·the·function·will·return·<code·class="inline">{finished,·Output}</code>·once·all·queued·data | 1438 | desired,·and·the·function·will·return·<code·class="inline">{finished,·Output}</code>·once·all·queued·data |
| 1439 | has·been·decompressed.</p><p>This·function·can·introduce·some·output·latency·(reading·input·without·producing | 1439 | has·been·decompressed.</p><p>This·function·can·introduce·some·output·latency·(reading·input·without·producing |
| 1440 | any·output).</p><p>If·a·preset·dictionary·is·required·for·further·decompression,·this·function | 1440 | any·output).</p><p>If·a·preset·dictionary·is·required·for·further·decompression,·this·function |
| 1441 | returns·a·<code·class="inline">need_dictionary</code>·tuple.·See·<a·href="#inflateSetDictionary/2"><code·class="inline">inflateSetDictionary/2</code></a>)·for·details.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">walk</span><span·class="p"·data-group-id=" | 1441 | returns·a·<code·class="inline">need_dictionary</code>·tuple.·See·<a·href="#inflateSetDictionary/2"><code·class="inline">inflateSetDictionary/2</code></a>)·for·details.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">walk</span><span·class="p"·data-group-id="0533083783-1">(</span><span·class="n">Compressed</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Handler</span><span·class="p"·data-group-id="0533083783-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1442 | ····</span><span·class="n">Z</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">open</span><span·class="p"·data-group-id=" | 1442 | ····</span><span·class="n">Z</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">open</span><span·class="p"·data-group-id="0533083783-2">(</span><span·class="p"·data-group-id="0533083783-2">)</span><span·class="p">,</span><span·class="w"> |
| 1443 | ····</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">inflateInit</span><span·class="p"·data-group-id=" | 1443 | ····</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">inflateInit</span><span·class="p"·data-group-id="0533083783-3">(</span><span·class="n">Z</span><span·class="p"·data-group-id="0533083783-3">)</span><span·class="p">,</span><span·class="w"> |
| 1444 | ····</span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 1444 | ····</span><span·class="nf">loop</span><span·class="p"·data-group-id="0533083783-4">(</span><span·class="n">Z</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Handler</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">safeInflate</sp[·...·truncated·by·diffoscope;·len:·255,·SHA:·cd03a695a5239faef8077927bc0e29105d7322d48a2cd250329a385d263f2cf5·...·]-4">)</span><span·class="p">,</span><span·class="w"> |
| 1445 | ····</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">inflateEnd</span><span·class="p"·data-group-id=" | 1445 | ····</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">inflateEnd</span><span·class="p"·data-group-id="0533083783-6">(</span><span·class="n">Z</span><span·class="p"·data-group-id="0533083783-6">)</span><span·class="p">,</span><span·class="w"> |
| 1446 | ····</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id=" | 1446 | ····</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id="0533083783-7">(</span><span·class="n">Z</span><span·class="p"·data-group-id="0533083783-7">)</span><span·class="p">.</span><span·class="w"> |
| 1447 | </span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 1447 | </span><span·class="nf">loop</span><span·class="p"·data-group-id="0533083783-8">(</span><span·class="n">Z</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Handler</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0533083783-9">{</span><span·class="ss">continue</span[·...·truncated·by·diffoscope;·len:·172,·SHA:·9f1cbf6043bc00d995064f741a0ef3480ec472979f48f16a0260e8bb9eff3ffe·...·]-8">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1448 | ····</span><span·class="n">Handler</span><span·class="p"·data-group-id=" | 1448 | ····</span><span·class="n">Handler</span><span·class="p"·data-group-id="0533083783-10">(</span><span·class="n">Output</span><span·class="p"·data-group-id="0533083783-10">)</span><span·class="p">,</span><span·class="w"> |
| 1449 | ····</span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 1449 | ····</span><span·class="nf">loop</span><span·class="p"·data-group-id="0533083783-11">(</span><span·class="n">Z</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Handler</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">zlib</span><span·class="p">:</span><span·class="nf">safeInflate</s[·...·truncated·by·diffoscope;·len:·333,·SHA:·8ce4bd9d82715816903de36051113bdf46ba44f1091154683311eff541d3f025·...·]-11">)</span><span·class="p">;</span><span·class="w"> |
| 1450 | </span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 1450 | </span><span·class="nf">loop</span><span·class="p"·data-group-id="0533083783-14">(</span><span·class="n">Z</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Handler</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0533083783-15">{</span><span·class="ss">finished</sp[·...·truncated·by·diffoscope;·len:·175,·SHA:·40444805a578f781a593804320abc3fcb06432264d61d87b876df0f9187742c2·...·]-14">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1451 | ····</span><span·class="n">Handler</span><span·class="p"·data-group-id=" | 1451 | ····</span><span·class="n">Handler</span><span·class="p"·data-group-id="0533083783-16">(</span><span·class="n">Output</span><span·class="p"·data-group-id="0533083783-16">)</span><span·class="p">.</span></code></pre> |
| 1452 | ··</section> | 1452 | ··</section> |
| 1453 | </section> | 1453 | </section> |
| 1454 | <section·class="detail"·id="set_controlling_process/2"> | 1454 | <section·class="detail"·id="set_controlling_process/2"> |
| 1455 | ··<div·class="detail-header"> | 1455 | ··<div·class="detail-header"> |
| 1456 | ····<a·href="#set_controlling_process/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1456 | ····<a·href="#set_controlling_process/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1457 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1457 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 16 | ?rw-r--r--··6.1·unx·····3296·bx·defN·25-Mar-18·0 | 16 | ?rw-r--r--··6.1·unx·····3296·bx·defN·25-Mar-18·08:47·OEBPS/asn1_introduction.xhtml |
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| 18 | ?rw-r--r--··6.1·unx······252·bx·defN·25-Mar-18·0 | 18 | ?rw-r--r--··6.1·unx······252·bx·defN·25-Mar-18·08:47·META-INF/container.xml |
| 19 | ?rw-r--r--··6.1·unx······162·bx·defN·25-Mar-18·0 | 19 | ?rw-r--r--··6.1·unx······162·bx·defN·25-Mar-18·08:47·META-INF/com.apple.ibooks.display-options.xml |
| 20 | 18·files,·359110·bytes·uncompressed,·9134 | 20 | 18·files,·359110·bytes·uncompressed,·91343·bytes·compressed:··74.6% |
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| 1 | Zip·archive·data,·made·by·v6.1·UNIX,·extract·using·at·least·v1.0,·last·modified,·last·modified·Sun,·Mar·18·2025·0 | 1 | Zip·archive·data,·made·by·v6.1·UNIX,·extract·using·at·least·v1.0,·last·modified,·last·modified·Sun,·Mar·18·2025·08:47:42,·uncompressed·size·20,·method=store |
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| 365 | <p>Performs·a·test·of·encode·and·decode·of·types·in·<code·class="inline">Module</code>.</p><p>The·generated·functions·are·called·by·this·function.·This·function·is | 365 | <p>Performs·a·test·of·encode·and·decode·of·types·in·<code·class="inline">Module</code>.</p><p>The·generated·functions·are·called·by·this·function.·This·function·is |
| 366 | useful·for·testing·to·ensure·that·the·generated·encode·and·decode | 366 | useful·for·testing·to·ensure·that·the·generated·encode·and·decode |
| 367 | functions·as·well·as·the·general·runtime·support·work·as·expected.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Currently,·the·<code·class="inline">test</code>·functions·have·many·limitations.·Essentially,·they·will | 367 | functions·as·well·as·the·general·runtime·support·work·as·expected.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Currently,·the·<code·class="inline">test</code>·functions·have·many·limitations.·Essentially,·they·will |
| 368 | mostly·work·for·old·specifications·based·on·the·1997·standard·for·ASN.1,·but | 368 | mostly·work·for·old·specifications·based·on·the·1997·standard·for·ASN.1,·but |
| 369 | not·for·most·modern-style·applications.·Another·limitation·is·that·the·<code·class="inline">test</code> | 369 | not·for·most·modern-style·applications.·Another·limitation·is·that·the·<code·class="inline">test</code> |
| 370 | functions·may·not·work·if·options·that·change·code·generations·strategies·such | 370 | functions·may·not·work·if·options·that·change·code·generations·strategies·such |
| 371 | as·the·options·<code·class="inline">macro_name_prefix</code>·and·<code·class="inline">record_name_prefix</code>·have·been·used.</p></section><ul><li><a·href="#test/1"><code·class="inline">test/1</code></a>·iterates·over·all·types·in·<code·class="inline">Module</code>.</li><li><a·href="#test/2"><code·class="inline">test/2</code></a>·tests·type·<code·class="inline">Type</code>·with·a·random·value.</li><li><a·href="#test/3"><code·class="inline">test/3</code></a>·tests·type·<code·class="inline">Type</code>·with·<code·class="inline">Value</code>.</li></ul><p>Schematically,·the·following·occurs·for·each·type·in·the·module:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id=" | 371 | as·the·options·<code·class="inline">macro_name_prefix</code>·and·<code·class="inline">record_name_prefix</code>·have·been·used.</p></section><ul><li><a·href="#test/1"><code·class="inline">test/1</code></a>·iterates·over·all·types·in·<code·class="inline">Module</code>.</li><li><a·href="#test/2"><code·class="inline">test/2</code></a>·tests·type·<code·class="inline">Type</code>·with·a·random·value.</li><li><a·href="#test/3"><code·class="inline">test/3</code></a>·tests·type·<code·class="inline">Type</code>·with·<code·class="inline">Value</code>.</li></ul><p>Schematically,·the·following·occurs·for·each·type·in·the·module:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id="9946835090-1">{</samp><samp·class="ss">ok</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Value</samp><samp·class="p"·data-group-id="9946835090-1">}</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·c[·...·truncated·by·diffoscope;·len:·274,·SHA:·34b9ccce56ac3a31cac84a7d5a0e63793679a6718b2a7f14b09b610c119d86c3·...·]-2">)</samp><samp·class="p">,</samp><samp·class="w"> |
| 372 | </samp><samp·class="p"·data-group-id=" | 372 | </samp><samp·class="p"·data-group-id="9946835090-3">{</samp><samp·class="ss">ok</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Bytes</samp><samp·class="p"·data-group-id="9946835090-3">}</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·c[·...·truncated·by·diffoscope;·len:·273,·SHA:·a5883729551bf76b5a0b484f84150983bdf9cb7d3f25413cf9879ebdbc3fe32d·...·]-4">)</samp><samp·class="p">,</samp><samp·class="w"> |
| 373 | </samp><samp·class="p"·data-group-id=" | 373 | </samp><samp·class="p"·data-group-id="9946835090-5">{</samp><samp·class="ss">ok</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Value</samp><samp·class="p"·data-group-id="9946835090-5">}</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·c[·...·truncated·by·diffoscope;·len:·273,·SHA:·4ff642144c26a6c0a893b7f42d2c588534ffa86d7178f9742f0f05fb0b3a4da1·...·]-6">)</samp><samp·class="p">.</samp></code></pre><p>The·<code·class="inline">test</code>·functions·use·the·<code·class="inline">*.asn1db</code>·files·for·all·included·modules.·If·they |
| 374 | are·located·in·a·different·directory·than·the·current·working·directory,·use·the | 374 | are·located·in·a·different·directory·than·the·current·working·directory,·use·the |
| 375 | <code·class="inline">include</code>·option·to·add·paths.·This·is·only·needed·when·automatically·generating | 375 | <code·class="inline">include</code>·option·to·add·paths.·This·is·only·needed·when·automatically·generating |
| 376 | values.·For·static·values·using·<code·class="inline">Value</code>·no·options·are·needed.</p> | 376 | values.·For·static·values·using·<code·class="inline">Value</code>·no·options·are·needed.</p> |
| 377 | ··</section> | 377 | ··</section> |
| 378 | </section> | 378 | </section> |
| 379 | <section·class="detail"·id="value/2"> | 379 | <section·class="detail"·id="value/2"> |
| Offset 139, 45 lines modified | Offset 139, 45 lines modified | ||
| 139 | ····location·INTEGER·{home(0),field(1),roving(2)}, | 139 | ····location·INTEGER·{home(0),field(1),roving(2)}, |
| 140 | ····age·INTEGER·OPTIONAL | 140 | ····age·INTEGER·OPTIONAL |
| 141 | ··} | 141 | ··} |
| 142 | END</code></pre><p>This·file·must·be·compiled·before·it·can·be·used.·The·ASN.1·compiler·checks·that | 142 | END</code></pre><p>This·file·must·be·compiled·before·it·can·be·used.·The·ASN.1·compiler·checks·that |
| 143 | the·syntax·is·correct·and·that·the·text·represents·proper·ASN.1·code·before | 143 | the·syntax·is·correct·and·that·the·text·represents·proper·ASN.1·code·before |
| 144 | generating·an·abstract·syntax·tree.·The·code·generator·then·uses·the·abstract | 144 | generating·an·abstract·syntax·tree.·The·code·generator·then·uses·the·abstract |
| 145 | syntax·tree·to·generate·code.</p><p>The·generated·Erlang·files·are·placed·in·the·current·directory·or·in·the | 145 | syntax·tree·to·generate·code.</p><p>The·generated·Erlang·files·are·placed·in·the·current·directory·or·in·the |
| 146 | directory·specified·with·option·<code·class="inline">{outdir,Dir}</code>.</p><p>The·compiler·can·be·called·from·the·Erlang·shell·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">asn1ct</span><span·class="p">:</span><span·class="nf">compile</span><span·class="p"·data-group-id=" | 146 | directory·specified·with·option·<code·class="inline">{outdir,Dir}</code>.</p><p>The·compiler·can·be·called·from·the·Erlang·shell·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">asn1ct</span><span·class="p">:</span><span·class="nf">compile</span><span·class="p"·data-group-id="0410409198-1">(</span><span·class="s">"People"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0410409198-2">[</span><span·class="ss">ber</span><span·class="p"·data-group-id="0410409198-2">]</span><span·class=[·...·truncated·by·diffoscope;·len:·29,·SHA:·f5b1580435baa65551601f63d83b9893e66a4ae3802b19475b9337f4a55be4f4·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 147 | </span><span·class="ss">ok</span></code></pre><p>Option·<code·class="inline">verbose</code>·can·be·added·to·get·information·about·the·generated·files:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">asn1ct</span><span·class="p">:</span><span·class="nf">compile</span><span·class="p"·data-group-id=" | 147 | </span><span·class="ss">ok</span></code></pre><p>Option·<code·class="inline">verbose</code>·can·be·added·to·get·information·about·the·generated·files:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">asn1ct</span><span·class="p">:</span><span·class="nf">compile</span><span·class="p"·data-group-id="3232777979-1">(</span><span·class="s">"People"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3232777979-2">[</span><span·class="ss">ber</span><span·class="p">,</span><span·class="ss">verbose</span><span·clas[·...·truncated·by·diffoscope;·len:·84,·SHA:·63d477b740790fb4029b802a09b8770fc3894d907452c139b9173adb32690031·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 148 | </span><span·class="n">Erlang</span><span·class="w">·</span><span·class="n">ASN</span><span·class="p">.</span><span·class="mi">1</span><span·class="w">·</span><span·class="ss">compiling</span><span·class="w">·</span><span·class="s">"People.asn"</span><span·class="w"> | 148 | </span><span·class="n">Erlang</span><span·class="w">·</span><span·class="n">ASN</span><span·class="p">.</span><span·class="mi">1</span><span·class="w">·</span><span·class="ss">compiling</span><span·class="w">·</span><span·class="s">"People.asn"</span><span·class="w"> |
| 149 | </span><span·class="o">--</span><span·class="p"·data-group-id=" | 149 | </span><span·class="o">--</span><span·class="p"·data-group-id="3232777979-3">{</span><span·class="ss">generated</span><span·class="p">,</span><span·class="s">"People.asn1db"</span><span·class="p"·data-group-id="3232777979-3">}</span><span·class="o">--</span><span·class="w"> |
| 150 | </span><span·class="o">--</span><span·class="p"·data-group-id=" | 150 | </span><span·class="o">--</span><span·class="p"·data-group-id="3232777979-4">{</span><span·class="ss">generated</span><span·class="p">,</span><span·class="s">"People.hrl"</span><span·class="p"·data-group-id="3232777979-4">}</span><span·class="o">--</span><span·class="w"> |
| 151 | </span><span·class="o">--</span><span·class="p"·data-group-id=" | 151 | </span><span·class="o">--</span><span·class="p"·data-group-id="3232777979-5">{</span><span·class="ss">generated</span><span·class="p">,</span><span·class="s">"People.erl"</span><span·class="p"·data-group-id="3232777979-5">}</span><span·class="o">--</span><span·class="w"> |
| 152 | </span><span·class="ss">ok</span></code></pre><p>ASN.1·module·<code·class="inline">People</code>·is·now·accepted·and·the·abstract·syntax·tree·is·saved·in | 152 | </span><span·class="ss">ok</span></code></pre><p>ASN.1·module·<code·class="inline">People</code>·is·now·accepted·and·the·abstract·syntax·tree·is·saved·in |
| 153 | file·<code·class="inline">People.asn1db</code>.·The·generated·Erlang·code·is·compiled·using·the·Erlang | 153 | file·<code·class="inline">People.asn1db</code>.·The·generated·Erlang·code·is·compiled·using·the·Erlang |
| 154 | compiler·and·loaded·into·the·Erlang·runtime·system.·There·is·now·an·API·for | 154 | compiler·and·loaded·into·the·Erlang·runtime·system.·There·is·now·an·API·for |
| 155 | <code·class="inline">encode/2</code>·and·<code·class="inline">decode/2</code>·in·module·<code·class="inline">People</code>,·which·is·called·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">'People'</span><span·class="p">:</span><span·class="nf">encode</span><span·class="p"·data-group-id=" | 155 | <code·class="inline">encode/2</code>·and·<code·class="inline">decode/2</code>·in·module·<code·class="inline">People</code>,·which·is·called·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">'People'</span><span·class="p">:</span><span·class="nf">encode</span><span·class="p"·data-group-id="9753719813-1">(</span><span·class="o"><</span><span·class="n">Type</span><span·class="w">·</span><span·class="ss">name</span><span·class="o">></span><span·class="p">,</span><span·class="w">·</span><span·class="o"><</span><span·class="n">Value</spa[·...·truncated·by·diffoscope;·len:·604,·SHA:·903a6d3e0e00177806b97cb7b5e260770f220061f48b1699f71c80ddf981ecd0·...·]-1">)</span></code></pre><p>Assume·that·there·is·a·network·application·that·receives·instances·of·the·ASN.1 |
| 156 | defined·type·<code·class="inline">Person</code>,·modifies,·and·sends·them·back·again:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">receive</span><span·class="w"> | 156 | defined·type·<code·class="inline">Person</code>,·modifies,·and·sends·them·back·again:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">receive</span><span·class="w"> |
| 157 | ···</span><span·class="p"·data-group-id=" | 157 | ···</span><span·class="p"·data-group-id="0968289536-1">{</span><span·class="n">Port</span><span·class="p">,</span><span·class="p"·data-group-id="0968289536-2">{</span><span·class="ss">data</span><span·class="p">,</span><span·class="n">Bytes</span><span·class="p"·data-group-id="0968289536-2">}</sp[·...·truncated·by·diffoscope;·len:·44,·SHA:·2e712e84b5347764824da18e270c960b4bcc25b7d13729e53e4f5c5d51269dba·...·]-1">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 158 | ·······</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">'People'</span><span·class="p">:</span><span·class="nf">decode</span><span·class="p"·data-group-id=" | 158 | ·······</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">'People'</span><span·class="p">:</span><span·class="nf">decode</span><span·class="p"·data-group-id="0968289536-3">(</span><span·class="ss">'Person'</span><span·class="p">,</span><span·class="n">Bytes</span><span·class="p"·data-group-id="0968289536-3">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 159 | ···········</span><span·class="p"·data-group-id=" | 159 | ···········</span><span·class="p"·data-group-id="0968289536-4">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">P</span><span·class="p"·data-group-id="0968289536-4">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 160 | ···············</span><span·class="p"·data-group-id=" | 160 | ···············</span><span·class="p"·data-group-id="0968289536-5">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">Answer</span><span·class="p"·data-group-id="0968289536-5">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">'People&#[·...·truncated·by·diffoscope;·len:·385,·SHA:·7c9e707b982bd27e737a9c386419b1116b494e0772cfd3c98563ac814f23899a·...·]-6">)</span><span·class="p">,</span><span·class="w"> |
| 161 | ···············</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 161 | ···············</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="0968289536-8">{</span><span·class="nf">self</span><span·class="p"·data-group-id="0968289536-9">(</span><span·class="p"·data-group-id="0968289536-9">)</span><span·class="p">,</span><span·class="p"·data-group-id="0968289536-10">{</span><span·class="ss">comma[·...·truncated·by·diffoscope;·len:·157,·SHA:·56589ef2c7b1199c78bbf4e75ed2aae8675401c81e23a56141d92a45e720e428·...·]-8">}</span><span·class="p">;</span><span·class="w"> |
| 162 | ···········</span><span·class="p"·data-group-id=" | 162 | ···········</span><span·class="p"·data-group-id="0968289536-11">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="n">Reason</span><span·class="p"·data-group-id="0968289536-11">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 163 | ···············</span><span·class="nf">exit</span><span·class="p"·data-group-id=" | 163 | ···············</span><span·class="nf">exit</span><span·class="p"·data-group-id="0968289536-12">(</span><span·class="p"·data-group-id="0968289536-13">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="n">Reason</span><span·class="p"·data-group-id="0968289536-13">}</span><span·class="p"·data-group-id="0968289536-12">)</span><span·class="w"> |
| 164 | ·······</span><span·class="k">end</span><span·class="w"> | 164 | ·······</span><span·class="k">end</span><span·class="w"> |
| 165 | ····</span><span·class="k">end</span><span·class="p">,</span></code></pre><p>In·this·example,·a·series·of·bytes·is·received·from·an·external·source·and·the | 165 | ····</span><span·class="k">end</span><span·class="p">,</span></code></pre><p>In·this·example,·a·series·of·bytes·is·received·from·an·external·source·and·the |
| 166 | bytes·are·then·decoded·into·a·valid·Erlang·term.·This·was·achieved·with·the·call | 166 | bytes·are·then·decoded·into·a·valid·Erlang·term.·This·was·achieved·with·the·call |
| 167 | <code·class="inline">'People':decode('Person',Bytes)</code>,·which·returned·an·Erlang·value·of·the·ASN.1 | 167 | <code·class="inline">'People':decode('Person',Bytes)</code>,·which·returned·an·Erlang·value·of·the·ASN.1 |
| 168 | type·<code·class="inline">Person</code>.·Then·an·answer·was·constructed·and·encoded·using | 168 | type·<code·class="inline">Person</code>.·Then·an·answer·was·constructed·and·encoded·using |
| 169 | <code·class="inline">'People':encode('Person',Answer)</code>,·which·takes·an·instance·of·a·defined·ASN.1 | 169 | <code·class="inline">'People':encode('Person',Answer)</code>,·which·takes·an·instance·of·a·defined·ASN.1 |
| 170 | type·and·transforms·it·to·a·binary·according·to·the·BER·or·PER·encoding·rules.</p><p>The·encoder·and·decoder·can·also·be·run·from·the·shell:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="n">Rockstar</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 170 | type·and·transforms·it·to·a·binary·according·to·the·BER·or·PER·encoding·rules.</p><p>The·encoder·and·decoder·can·also·be·run·from·the·shell:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="n">Rockstar</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6264507824-1">{</span><span·class="ss">'Person'</span><span·class="p">,</span><span·class="s">"Some·Name"</span><span·class="p">,</span><span·class="ss">roving</span><span·class="p">,</span><span·class="mi">50</span><span·class="p"·data-g[·...·truncated·by·diffoscope;·len:·19,·SHA:·dda6740ea3bec379df5bdfbbd12aaa239ff1e51cd2eb8f998bd34c6fffcc9679·...·]-1">}</span><span·class="p">.</span><span·class="w"> |
| 171 | </span><span·class="p"·data-group-id=" | 171 | </span><span·class="p"·data-group-id="6264507824-2">{</span><span·class="ss">'Person'</span><span·class="p">,</span><span·class="s">"Some·Name"</span><span·class="p">,</span><span·class="ss">roving</span><span·class="p">,</span><span·class="mi">50</span><span·class="p"·data-g[·...·truncated·by·diffoscope;·len:·19,·SHA:·dda6740ea3bec379df5bdfbbd12aaa239ff1e51cd2eb8f998bd34c6fffcc9679·...·]-2">}</span><span·class="gp·unselectable"> |
| 172 | 3>·</span><span·class="p"·data-group-id=" | 172 | 3>·</span><span·class="p"·data-group-id="6264507824-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">Bin</span><span·class="p"·data-group-id="6264507824-3">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">'People'[·...·truncated·by·diffoscope;·len:·250,·SHA:·b276d1966c05aa9cb3254ff59720804383de1e38e06975a4fc525220c4b3e523·...·]-4">)</span><span·class="p">.</span><span·class="w"> |
| 173 | </span><span·class="p"·data-group-id=" | 173 | </span><span·class="p"·data-group-id="6264507824-5">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="6264507824-6"><<</span><span·class="mi">243</span><span·class="p">,</span><span·class="mi">17</span><span·class="p">,</span><span·class="mi">19</span><span·class="p">,</span><span·class="mi">9</span><span·class="p">,</span><span·class="mi">83</span><span·class="p">,</span><span·class="mi">111</span><span·class="p">,</span><span·class="mi">109</span><span·class="p">,</span><span·class="mi">101</span><span·class="p">,</span><span·class="mi">32</span><span·class="p">,</span><span·class="mi">78</span><span·class="p">,</span><span·class="mi">97</span><span·class="p">,</span><span·class="mi">109</span><span·class="p">,</span><span·class="mi">101</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="w"> |
| 174 | ······</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">50</span><span·class="p"·data-group-id=" | 174 | ······</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">50</span><span·class="p"·data-group-id="6264507824-6">>></span><span·class="p"·data-group-id="6264507824-5">}</span><span·class="gp·unselectable"> |
| 175 | 4>·</span><span·class="p"·data-group-id=" | 175 | 4>·</span><span·class="p"·data-group-id="6264507824-7">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">Person</span><span·class="p"·data-group-id="6264507824-7">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">'People&#[·...·truncated·by·diffoscope;·len:·248,·SHA:·9078f48fcaaf5a6cf10490c8cbae8434f43dbc860cc381dfe11ed291b2306a0b·...·]-8">)</span><span·class="p">.</span><span·class="w"> |
| 176 | </span><span·class="p"·data-group-id=" | 176 | </span><span·class="p"·data-group-id="6264507824-9">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="6264507824-10">{</span><span·class="ss">'Person'</span><span·class="p">,</span><span·class="s">"Some·Name"</span><span·class="p">,</spa[·...·truncated·by·diffoscope;·len:·177,·SHA:·466b7e10636a98ef6258fe5ce9fdc01a3c8535d7099a41fdb3ef03d9e746cd12·...·]-9">}</span></code></pre><h3·id="module-dependencies"·class="section-heading"> |
| 177 | ··<a·href="#module-dependencies"·class="hover-link"> | 177 | ··<a·href="#module-dependencies"·class="hover-link"> |
| 178 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 178 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 179 | ··</a> | 179 | ··</a> |
| 180 | ··<span·class="text">Module·Dependencies</span> | 180 | ··<span·class="text">Module·Dependencies</span> |
| 181 | </h3> | 181 | </h3> |
| 182 | <p>It·is·common·that·ASN.1·modules·import·defined·types,·values,·and·other·entities | 182 | <p>It·is·common·that·ASN.1·modules·import·defined·types,·values,·and·other·entities |
| 183 | from·another·ASN.1·module.</p><p>Earlier·versions·of·the·ASN.1·compiler·required·that·modules·that·were·imported | 183 | from·another·ASN.1·module.</p><p>Earlier·versions·of·the·ASN.1·compiler·required·that·modules·that·were·imported |
| Offset 267, 35 lines modified | Offset 267, 35 lines modified | ||
| 267 | ··</a> | 267 | ··</a> |
| 268 | ··<span·class="text">Note·about·tags</span> | 268 | ··<span·class="text">Note·about·tags</span> |
| 269 | </h2> | 269 | </h2> |
| 270 | <p>Tags·used·to·be·important·for·all·users·of·ASN.1,·because·it·was·necessary·to | 270 | <p>Tags·used·to·be·important·for·all·users·of·ASN.1,·because·it·was·necessary·to |
| 271 | to·manually·add·tags·to·certain·constructs·in·order·for·the·ASN.1·specification·to | 271 | to·manually·add·tags·to·certain·constructs·in·order·for·the·ASN.1·specification·to |
| 272 | be·valid.·Example·of·an·old-style·specification:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Tags</span><span·class="w">·</span><span·class="n">DEFINITIONS</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w"> | 272 | be·valid.·Example·of·an·old-style·specification:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Tags</span><span·class="w">·</span><span·class="n">DEFINITIONS</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w"> |
| 273 | </span><span·class="n">BEGIN</span><span·class="w"> | 273 | </span><span·class="n">BEGIN</span><span·class="w"> |
| 274 | ··</span><span·class="n">Afters</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">CHOICE</span><span·class="w">·</span><span·class="p"·data-group-id=" | 274 | ··</span><span·class="n">Afters</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">CHOICE</span><span·class="w">·</span><span·class="p"·data-group-id="5457023611-1">{</span><span·class="w">·</span><span·class="ss">cheese</span><span·class="w">·</span><span·class="p"·data-group-id="5457023611-2">[</span><span·class="mi">0</span><span·class="p"·data-group-id="5457023611-2">]</span><span·class="w">·</span><span·class="n">IA5String</span><span·class="p">,</span><span·class="w"> |
| 275 | ······················</span><span·class="ss">dessert</span><span·class="w">·</span><span·class="p"·data-group-id=" | 275 | ······················</span><span·class="ss">dessert</span><span·class="w">·</span><span·class="p"·data-group-id="5457023611-3">[</span><span·class="mi">1</span><span·class="p"·data-group-id="5457023611-3">]</span><span·class="w">·</span><span·class="n">IA5String</span><span·class="w">·</span><span·class="p"·data-group-id="5457023611-1">}</span><span·class="w"> |
| 276 | </span><span·class="n">END</span></code></pre><p>Without·the·tags·(the·numbers·in·square·brackets)·the·ASN.1·compiler·refused·to | 276 | </span><span·class="n">END</span></code></pre><p>Without·the·tags·(the·numbers·in·square·brackets)·the·ASN.1·compiler·refused·to |
| 277 | compile·the·file.</p><p>In·1994·the·global·tagging·mode·<code·class="inline">AUTOMATIC·TAGS</code>·was·introduced.·By·putting | 277 | compile·the·file.</p><p>In·1994·the·global·tagging·mode·<code·class="inline">AUTOMATIC·TAGS</code>·was·introduced.·By·putting |
| 278 | <code·class="inline">AUTOMATIC·TAGS</code>·in·the·module·header,·the·ASN.1·compiler·automatically·adds | 278 | <code·class="inline">AUTOMATIC·TAGS</code>·in·the·module·header,·the·ASN.1·compiler·automatically·adds |
| 279 | tags·when·needed.·The·following·is·the·same·specification·in·<code·class="inline">AUTOMATIC·TAGS</code> | 279 | tags·when·needed.·The·following·is·the·same·specification·in·<code·class="inline">AUTOMATIC·TAGS</code> |
| 280 | mode:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Tags</span><span·class="w">·</span><span·class="n">DEFINITIONS</span><span·class="w">·</span><span·class="n">AUTOMATIC</span><span·class="w">·</span><span·class="n">TAGS</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w"> | 280 | mode:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Tags</span><span·class="w">·</span><span·class="n">DEFINITIONS</span><span·class="w">·</span><span·class="n">AUTOMATIC</span><span·class="w">·</span><span·class="n">TAGS</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w"> |
| 281 | </span><span·class="n">BEGIN</span><span·class="w"> | 281 | </span><span·class="n">BEGIN</span><span·class="w"> |
| 282 | ··</span><span·class="n">Afters</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">CHOICE</span><span·class="w">·</span><span·class="p"·data-group-id=" | 282 | ··</span><span·class="n">Afters</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">CHOICE</span><span·class="w">·</span><span·class="p"·data-group-id="6126175250-1">{</span><span·class="w">·</span><span·class="ss">cheese</span><span·class="w">·</span><span·class="n">IA5String</span><span·class="p">,</span><span·class="w"> |
| 283 | ······················</span><span·class="ss">dessert</span><span·class="w">·</span><span·class="n">IA5String</span><span·class="w">·</span><span·class="p"·data-group-id=" | 283 | ······················</span><span·class="ss">dessert</span><span·class="w">·</span><span·class="n">IA5String</span><span·class="w">·</span><span·class="p"·data-group-id="6126175250-1">}</span><span·class="w"> |
| 284 | </span><span·class="n">END</span></code></pre><p><a·href=""·id="ASN1Types"></a></p><h2·id="asn-1-types"·class="section-heading"> | 284 | </span><span·class="n">END</span></code></pre><p><a·href=""·id="ASN1Types"></a></p><h2·id="asn-1-types"·class="section-heading"> |
| 285 | ··<a·href="#asn-1-types"·class="hover-link"> | 285 | ··<a·href="#asn-1-types"·class="hover-link"> |
| 286 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 286 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 287 | ··</a> | 287 | ··</a> |
| 288 | ··<span·class="text">ASN.1·Types</span> | 288 | ··<span·class="text">ASN.1·Types</span> |
| 289 | </h2> | 289 | </h2> |
| 290 | <p>This·section·describes·the·ASN.1·types·including·their·functionality,·purpose, | 290 | <p>This·section·describes·the·ASN.1·types·including·their·functionality,·purpose, |
| 291 | and·how·values·are·assigned·in·Erlang.</p><p>ASN.1·has·both·primitive·and·constructed·types:</p><table><thead><tr><th·style="text-align:·left;"><em>Primitive·Types</em></th><th·style="text-align:·left;"><em>Constructed·Types</em></th></tr></thead><tbody><tr><td·style="text-align:·left;"><a·href="asn1_getting_started.html#boolean">BOOLEAN</a></td><td·style="text-align:·left;"><a·href="asn1_getting_started.html#sequence">SEQUENCE</a></td></tr><tr><td·style="text-align:·left;"><a·href="asn1_getting_started.html#integer">INTEGER</a></td><td·style="text-align:·left;"><a·href="asn1_getting_started.html#set">SET</a></td></tr><tr><td·style="text-align:·left;"><a·href="asn1_getting_started.html#real">REAL</a></td><td·style="text-align:·left;"><a·href="asn1_getting_started.html#choice">CHOICE</a></td></tr><tr><td·style="text-align:·left;"><a·href="asn1_getting_started.html#null">NULL</a></td><td·style="text-align:·left;"><a·href="asn1_getting_started.html#SOF">SET·OF·and·SEQUENCE·OF</a></td></tr><tr><td·style="text-align:·left;"><a·href="asn1_getting_started.html#enumerated">ENUMERATED</a></td><td·style="text-align:·left;"><a·href="asn1_getting_started.html#ANY">ANY</a></td></tr><tr><td·style="text-align:·left;"><a·href="asn1_getting_started.html#bit-string">BIT·STRING</a></td><td·style="text-align:·left;"><a·href="asn1_getting_started.html#ANY">ANY·DEFINED·BY</a></td></tr><tr><td·style="text-align:·left;"><a·href="asn1_getting_started.html#octet-string">OCTET·STRING</a></td><td·style="text-align:·left;"><a·href="asn1_getting_started.html#NegotiationTypes">EXTERNAL</a></td></tr><tr><td·style="text-align:·left;"><a·href="asn1_getting_started.html#character-strings">Character·Strings</a></td><td·style="text-align:·left;"><a·href="asn1_getting_started.html#NegotiationTypes">EMBEDDED·PDV</a></td></tr><tr><td·style="text-align:·left;"><a·href="asn1_getting_started.html#object-identifier">OBJECT·IDENTIFIER</a></td><td·style="text-align:·left;"><a·href="asn1_getting_started.html#NegotiationTypes">CHARACTER·STRING</a></td></tr><tr><td·style="text-align:·left;"><a·href="asn1_getting_started.html#object-descriptor">Object·Descriptor</a></td><td·style="text-align:·left;"></td></tr><tr><td·style="text-align:·left;"><a·href="asn1_getting_started.html#The-TIME-types">TIME·Types</a></td><td·style="text-align:·left;"></td></tr></tbody></table><p><em>Table:·Supported·ASN.1·Types</em></p><p><a·href=""·id="TypeNameValue"></a></p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>The·values·of·each·ASN.1·type·have·their·own·representation·in·Erlang,·as | 291 | and·how·values·are·assigned·in·Erlang.</p><p>ASN.1·has·both·primitive·and·constructed·types:</p><table><thead><tr><th·style="text-align:·left;"><em>Primitive·Types</em></th><th·style="text-align:·left;"><em>Constructed·Types</em></th></tr></thead><tbody><tr><td·style="text-align:·left;"><a·href="asn1_getting_started.html#boolean">BOOLEAN</a></td><td·style="text-align:·left;"><a·href="asn1_getting_started.html#sequence">SEQUENCE</a></td></tr><tr><td·style="text-align:·left;"><a·href="asn1_getting_started.html#integer">INTEGER</a></td><td·style="text-align:·left;"><a·href="asn1_getting_started.html#set">SET</a></td></tr><tr><td·style="text-align:·left;"><a·href="asn1_getting_started.html#real">REAL</a></td><td·style="text-align:·left;"><a·href="asn1_getting_started.html#choice">CHOICE</a></td></tr><tr><td·style="text-align:·left;"><a·href="asn1_getting_started.html#null">NULL</a></td><td·style="text-align:·left;"><a·href="asn1_getting_started.html#SOF">SET·OF·and·SEQUENCE·OF</a></td></tr><tr><td·style="text-align:·left;"><a·href="asn1_getting_started.html#enumerated">ENUMERATED</a></td><td·style="text-align:·left;"><a·href="asn1_getting_started.html#ANY">ANY</a></td></tr><tr><td·style="text-align:·left;"><a·href="asn1_getting_started.html#bit-string">BIT·STRING</a></td><td·style="text-align:·left;"><a·href="asn1_getting_started.html#ANY">ANY·DEFINED·BY</a></td></tr><tr><td·style="text-align:·left;"><a·href="asn1_getting_started.html#octet-string">OCTET·STRING</a></td><td·style="text-align:·left;"><a·href="asn1_getting_started.html#NegotiationTypes">EXTERNAL</a></td></tr><tr><td·style="text-align:·left;"><a·href="asn1_getting_started.html#character-strings">Character·Strings</a></td><td·style="text-align:·left;"><a·href="asn1_getting_started.html#NegotiationTypes">EMBEDDED·PDV</a></td></tr><tr><td·style="text-align:·left;"><a·href="asn1_getting_started.html#object-identifier">OBJECT·IDENTIFIER</a></td><td·style="text-align:·left;"><a·href="asn1_getting_started.html#NegotiationTypes">CHARACTER·STRING</a></td></tr><tr><td·style="text-align:·left;"><a·href="asn1_getting_started.html#object-descriptor">Object·Descriptor</a></td><td·style="text-align:·left;"></td></tr><tr><td·style="text-align:·left;"><a·href="asn1_getting_started.html#The-TIME-types">TIME·Types</a></td><td·style="text-align:·left;"></td></tr></tbody></table><p><em>Table:·Supported·ASN.1·Types</em></p><p><a·href=""·id="TypeNameValue"></a></p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>The·values·of·each·ASN.1·type·have·their·own·representation·in·Erlang,·as |
| 292 | described·in·the·following·sections.·Users·must·provide·these·values·for | 292 | described·in·the·following·sections.·Users·must·provide·these·values·for |
| 293 | encoding·according·to·the·representation,·as·shown·in·the·following·example:</p></section><pre><code·class="text">Operational·::=·BOOLEAN·--ASN.1·definition</code></pre><p>In·Erlang·code·it·can·look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Val</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">true</span><span·class="p">,</span><span·class="w"> | 293 | encoding·according·to·the·representation,·as·shown·in·the·following·example:</p></section><pre><code·class="text">Operational·::=·BOOLEAN·--ASN.1·definition</code></pre><p>In·Erlang·code·it·can·look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Val</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">true</span><span·class="p">,</span><span·class="w"> |
| 294 | </span><span·class="p"·data-group-id=" | 294 | </span><span·class="p"·data-group-id="2047999785-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">Bytes</span><span·class="p"·data-group-id="2047999785-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">MyModule</span>[·...·truncated·by·diffoscope;·len:·267,·SHA:·79abc7e3cc120f5e2dd7d010cd2003638d86209c361f386d66d2ba45d863cb34·...·]-2">)</span><span·class="p">,</span></code></pre><h3·id="boolean"·class="section-heading"> |
| 295 | ··<a·href="#boolean"·class="hover-link"> | 295 | ··<a·href="#boolean"·class="hover-link"> |
| 296 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 296 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 297 | ··</a> | 297 | ··</a> |
| 298 | ··<span·class="text">BOOLEAN</span> | 298 | ··<span·class="text">BOOLEAN</span> |
| 299 | </h3> | 299 | </h3> |
| 300 | <p>Booleans·in·ASN.1·express·values·that·can·be·either·<code·class="inline">TRUE</code>·or·<code·class="inline">FALSE</code>.·The | 300 | <p>Booleans·in·ASN.1·express·values·that·can·be·either·<code·class="inline">TRUE</code>·or·<code·class="inline">FALSE</code>.·The |
| 301 | meanings·assigned·to·<code·class="inline">TRUE</code>·and·<code·class="inline">FALSE</code>·are·outside·the·scope·of·this·text.</p><p>In·ASN.1·it·is·possible·to·have:</p><pre><code·class="text">Operational·::=·BOOLEAN</code></pre><p>Assigning·a·value·to·type·<code·class="inline">Operational</code>·in·Erlang·is·possible·by·using·the | 301 | meanings·assigned·to·<code·class="inline">TRUE</code>·and·<code·class="inline">FALSE</code>·are·outside·the·scope·of·this·text.</p><p>In·ASN.1·it·is·possible·to·have:</p><pre><code·class="text">Operational·::=·BOOLEAN</code></pre><p>Assigning·a·value·to·type·<code·class="inline">Operational</code>·in·Erlang·is·possible·by·using·the |
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| 304 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 304 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 305 | ··</a> | 305 | ··</a> |
| 306 | ··<span·class="text">INTEGER</span> | 306 | ··<span·class="text">INTEGER</span> |
| 307 | </h3> | 307 | </h3> |
| 308 | <p>An·ASN.1·INTEGER·is·represented·by·an·integer·in·Erlang.</p><p>The·concept·of·subtyping·can·be·applied·to·integers·and·to·other·ASN.1·types. | 308 | <p>An·ASN.1·INTEGER·is·represented·by·an·integer·in·Erlang.</p><p>The·concept·of·subtyping·can·be·applied·to·integers·and·to·other·ASN.1·types. |
| 309 | The·details·of·subtyping·are·not·explained·here;·for·more·information,·see | 309 | The·details·of·subtyping·are·not·explained·here;·for·more·information,·see |
| 310 | X.680.·Various·syntaxes·are·allowed·when·defining·a·type·as·an·integer:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">T1</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">INTEGER</span><span·class="w"> | 310 | X.680.·Various·syntaxes·are·allowed·when·defining·a·type·as·an·integer:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">T1</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">INTEGER</span><span·class="w"> |
| 311 | </span><span·class="n">T2</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">INTEGER</span><span·class="w">·</span><span·class="p"·data-group-id=" | 311 | </span><span·class="n">T2</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">INTEGER</span><span·class="w">·</span><span·class="p"·data-group-id="4681806024-1">(</span><span·class="o">-</span><span·class="mi">2</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">7</span><span·class="p"·data-group-id="4681806024-1">)</span><span·class="w"> |
| 312 | </span><span·class="n">T3</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">INTEGER</span><span·class="w">·</span><span·class="p"·data-group-id=" | 312 | </span><span·class="n">T3</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">INTEGER</span><span·class="w">·</span><span·class="p"·data-group-id="4681806024-2">(</span><span·class="mi">0</span><span·class="p">.</span><span·class="p">.</span><span·class="n">MAX</span><span·class="p"·data-group-id="4681806024-2">)</span><span·class="w"> |
| 313 | </span><span·class="n">T4</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">INTEGER</span><span·class="w">·</span><span·class="p"·data-group-id=" | 313 | </span><span·class="n">T4</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">INTEGER</span><span·class="w">·</span><span·class="p"·data-group-id="4681806024-3">(</span><span·class="mi">0</span><span·class="o"><</span><span·class="p">.</span><span·class="p">.</span><span·class="n">MAX</span><span·class="p"·data-group-id="4681806024-3">)</span><span·class="w"> |
| 314 | </span><span·class="n">T5</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">INTEGER</span><span·class="w">·</span><span·class="p"·data-group-id=" | 314 | </span><span·class="n">T5</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">INTEGER</span><span·class="w">·</span><span·class="p"·data-group-id="4681806024-4">(</span><span·class="n">MIN</span><span·class="o"><</span><span·class="p">.</span><span·class="p">.</span><span·class="o">-</span><span·class="mi">99</span><span·class="p"·data-group-id="4681806024-4">)</span><span·class="w"> |
| 315 | </span><span·class="n">T6</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">INTEGER</span><span·class="w">·</span><span·class="p"·data-group-id=" | 315 | </span><span·class="n">T6</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">INTEGER</span><span·class="w">·</span><span·class="p"·data-group-id="4681806024-5">{</span><span·class="nf">red</span><span·class="p"·data-group-id="4681806024-6">(</span><span·class="mi">0</span><span·class="p"·data-group-id="4681806024-6">)</span><span·class="p">,</span><span·class="nf">blue</span><span·class="p"·data-gro[·...·truncated·by·diffoscope;·len:·332,·SHA:·82493dd3d98797875fa080828f73c6e187ccd966b3afee84a3e79f350a3a20d0·...·]-5">}</span></code></pre><p>The·Erlang·representation·of·an·ASN.1·<code·class="inline">INTEGER</code>·is·an·integer·or·an·atom·if·a |
| 316 | <code·class="inline">Named·Number·List</code>·(see·<code·class="inline">T6</code>·in·the·previous·list)·is·specified.</p><p>The·following·is·an·example·of·Erlang·code·that·assigns·values·for·the·types·in | 316 | <code·class="inline">Named·Number·List</code>·(see·<code·class="inline">T6</code>·in·the·previous·list)·is·specified.</p><p>The·following·is·an·example·of·Erlang·code·that·assigns·values·for·the·types·in |
| 317 | the·previous·list:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">T1value</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">,</span><span·class="w"> | 317 | the·previous·list:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">T1value</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">,</span><span·class="w"> |
| 318 | </span><span·class="n">T2value</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">6</span><span·class="p">,</span><span·class="w"> | 318 | </span><span·class="n">T2value</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">6</span><span·class="p">,</span><span·class="w"> |
| 319 | </span><span·class="n">T6value1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">blue</span><span·class="p">,</span><span·class="w"> | 319 | </span><span·class="n">T6value1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">blue</span><span·class="p">,</span><span·class="w"> |
| 320 | </span><span·class="n">T6value2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">,</span><span·class="w"> | 320 | </span><span·class="n">T6value2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">,</span><span·class="w"> |
| 321 | </span><span·class="n">T6value3</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">white</span></code></pre><p>These·Erlang·variables·are·now·bound·to·valid·instances·of·ASN.1·defined·types. | 321 | </span><span·class="n">T6value3</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">white</span></code></pre><p>These·Erlang·variables·are·now·bound·to·valid·instances·of·ASN.1·defined·types. |
| 322 | This·style·of·value·can·be·passed·directly·to·the·encoder·for·transformation | 322 | This·style·of·value·can·be·passed·directly·to·the·encoder·for·transformation |
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| 357 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 357 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 358 | ··</a> | 358 | ··</a> |
| 359 | ··<span·class="text">BIT·STRING</span> | 359 | ··<span·class="text">BIT·STRING</span> |
| 360 | </h3> | 360 | </h3> |
| 361 | <p>The·type·<code·class="inline">BIT·STRING</code>·can·be·used·to·model·information·that·is·made·up·of | 361 | <p>The·type·<code·class="inline">BIT·STRING</code>·can·be·used·to·model·information·that·is·made·up·of |
| 362 | arbitrary·length·series·of·bits.·It·is·intended·to·be·used·for·selection·of | 362 | arbitrary·length·series·of·bits.·It·is·intended·to·be·used·for·selection·of |
| 363 | flags,·not·for·binary·files.</p><p>In·ASN.1,·<code·class="inline">BIT·STRING</code>·definitions·can·look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Bits1</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">BIT</span><span·class="w">·</span><span·class="n">STRING</span><span·class="w"> | 363 | flags,·not·for·binary·files.</p><p>In·ASN.1,·<code·class="inline">BIT·STRING</code>·definitions·can·look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Bits1</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">BIT</span><span·class="w">·</span><span·class="n">STRING</span><span·class="w"> |
| 364 | </span><span·class="n">Bits2</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">BIT</span><span·class="w">·</span><span·class="n">STRING</span><span·class="w">·</span><span·class="p"·data-group-id=" | 364 | </span><span·class="n">Bits2</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">BIT</span><span·class="w">·</span><span·class="n">STRING</span><span·class="w">·</span><span·class="p"·data-group-id="4154187526-1">{</span><span·class="nf">foo</span><span·class="p"·data-group-id="4154187526-2">(</span><span·class="mi">0</span><span·class="p"·data-group-id="4154187526-2">)</span><span·class="p">,</span><span·class="nf">bar</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·697,·SHA:·7a186495fbf7e891ea2b46c59dbe0a303eb46830fe0b1a0fc0b285f7a13e4374·...·]-1">}</span></code></pre><p>The·following·two·notations·are·available·for·representation·of·<code·class="inline">BIT·STRING</code> |
| 365 | values·in·Erlang·and·as·input·to·the·encode·functions:</p><ol><li>A·bitstring.·By·default,·a·<code·class="inline">BIT·STRING</code>·with·no·symbolic·names·is·decoded·to | 365 | values·in·Erlang·and·as·input·to·the·encode·functions:</p><ol><li>A·bitstring.·By·default,·a·<code·class="inline">BIT·STRING</code>·with·no·symbolic·names·is·decoded·to |
| 366 | an·Erlang·bitstring.</li><li>A·list·of·atoms·corresponding·to·atoms·in·the·<code·class="inline">NamedBitList</code>·in·the | 366 | an·Erlang·bitstring.</li><li>A·list·of·atoms·corresponding·to·atoms·in·the·<code·class="inline">NamedBitList</code>·in·the |
| 367 | <code·class="inline">BIT·STRING</code>·definition.·A·<code·class="inline">BIT·STRING</code>·with·symbolic·names·is·always·decoded | 367 | <code·class="inline">BIT·STRING</code>·definition.·A·<code·class="inline">BIT·STRING</code>·with·symbolic·names·is·always·decoded |
| 368 | to·the·format·shown·in·the·following·example:</li></ol><pre><code·class="text">Bits1Val1·=·<<0:1,1:1,0:1,1:1,1:1>>, | 368 | to·the·format·shown·in·the·following·example:</li></ol><pre><code·class="text">Bits1Val1·=·<<0:1,1:1,0:1,1:1,1:1>>, |
| 369 | Bits2Val1·=·[gnu,punk], | 369 | Bits2Val1·=·[gnu,punk], |
| 370 | Bits2Val2·=·<<2#1110:4>>, | 370 | Bits2Val2·=·<<2#1110:4>>, |
| 371 | Bits2Val3·=·[bar,gnu,gnome],</code></pre><p><code·class="inline">Bits2Val2</code>·and·<code·class="inline">Bits2Val3</code>·denote·the·same·value.</p><p><code·class="inline">Bits2Val1</code>·is·assigned·symbolic·values.·The·assignment·means·that·the·bits | 371 | Bits2Val3·=·[bar,gnu,gnome],</code></pre><p><code·class="inline">Bits2Val2</code>·and·<code·class="inline">Bits2Val3</code>·denote·the·same·value.</p><p><code·class="inline">Bits2Val1</code>·is·assigned·symbolic·values.·The·assignment·means·that·the·bits |
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| 385 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 385 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 386 | ··</a> | 386 | ··</a> |
| 387 | ··<span·class="text">OCTET·STRING</span> | 387 | ··<span·class="text">OCTET·STRING</span> |
| 388 | </h3> | 388 | </h3> |
| 389 | <p><code·class="inline">OCTET·STRING</code>·is·the·simplest·of·all·ASN.1·types.·<code·class="inline">OCTET·STRING</code>·only·moves·or | 389 | <p><code·class="inline">OCTET·STRING</code>·is·the·simplest·of·all·ASN.1·types.·<code·class="inline">OCTET·STRING</code>·only·moves·or |
| 390 | transfers,·for·example,·binary·files·or·other·unstructured·information·complying | 390 | transfers,·for·example,·binary·files·or·other·unstructured·information·complying |
| 391 | with·two·rules:·the·bytes·consist·of·octets·and·encoding·is·not·required.</p><p>It·is·possible·to·have·the·following·ASN.1·type·definitions:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">O1</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">OCTET</span><span·class="w">·</span><span·class="n">STRING</span><span·class="w"> | 391 | with·two·rules:·the·bytes·consist·of·octets·and·encoding·is·not·required.</p><p>It·is·possible·to·have·the·following·ASN.1·type·definitions:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">O1</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">OCTET</span><span·class="w">·</span><span·class="n">STRING</span><span·class="w"> |
| 392 | </span><span·class="n">O2</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">OCTET</span><span·class="w">·</span><span·class="n">STRING</span><span·class="w">·</span><span·class="p"·data-group-id=" | 392 | </span><span·class="n">O2</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">OCTET</span><span·class="w">·</span><span·class="n">STRING</span><span·class="w">·</span><span·class="p"·data-group-id="7711604270-1">(</span><span·class="n">SIZE</span><span·class="p"·data-group-id="7711604270-2">(</span><span·class="mi">28</span><span·class="p"·data-group-id="7711604270-2">)</span><span·class="p"·data-group-id="7711604270-1">)</span></code></pre><p>With·the·following·example·assignments·in·Erlang:</p><pre><code·class="text">O1Val·=·<<17,13,19,20,0,0,255,254>>, |
| 393 | O2Val·=·<<"must·be·exactly·28·chars....">>,</code></pre><p>By·default,·an·<code·class="inline">OCTET·STRING</code>·is·always·represented·as·an·Erlang·binary.·If·the | 393 | O2Val·=·<<"must·be·exactly·28·chars....">>,</code></pre><p>By·default,·an·<code·class="inline">OCTET·STRING</code>·is·always·represented·as·an·Erlang·binary.·If·the |
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| 161 | </h3> | 161 | </h3> |
| 162 | <p>The·runtime·user·interface·for·exclusive·decode·comprises·the·following·two | 162 | <p>The·runtime·user·interface·for·exclusive·decode·comprises·the·following·two |
| 163 | functions:</p><ul><li>A·function·for·an·exclusive·decode,·whose·name·the·user·decides·in·the | 163 | functions:</p><ul><li>A·function·for·an·exclusive·decode,·whose·name·the·user·decides·in·the |
| 164 | configuration·file</li><li>A·<code·class="inline">decode_part/2</code>·function·generated·by·the·ASN.1·compiler·when | 164 | configuration·file</li><li>A·<code·class="inline">decode_part/2</code>·function·generated·by·the·ASN.1·compiler·when |
| 165 | exclusive·decode·is·enabled.·This·function·decodes·the·parts·that | 165 | exclusive·decode·is·enabled.·This·function·decodes·the·parts·that |
| 166 | were·left·undecoded·during·the·exclusive·decode.</li></ul><p>Both·functions·are·described·in·the·following.</p><p>If·the·exclusive·decode·function·has,·for·example,·the·name·<code·class="inline">decode_exclusive</code> | 166 | were·left·undecoded·during·the·exclusive·decode.</li></ul><p>Both·functions·are·described·in·the·following.</p><p>If·the·exclusive·decode·function·has,·for·example,·the·name·<code·class="inline">decode_exclusive</code> |
| 167 | and·an·ASN.1·encoded·message·<code·class="inline">Bin</code>·is·to·be·exclusive·decoded,·the·call·is·as | 167 | and·an·ASN.1·encoded·message·<code·class="inline">Bin</code>·is·to·be·exclusive·decoded,·the·call·is·as |
| 168 | follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 168 | follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="7521742557-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">ExclMessage</span><span·class="p"·data-group-id="7521742557-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">'MyM[·...·truncated·by·diffoscope;·len:·201,·SHA:·2b435ef2bb30cf1e2f412a4acac17dcb3db86909f599228360620731513d8f99·...·]-2">)</span></code></pre><p><a·href=""·id="UndecodedPart"></a>·The·result·<code·class="inline">ExclMessage</code>·has·the·same·structure·as·a |
| 169 | complete·decode·would·have,·except·for·the·parts·of·the·top·type·that·were·not | 169 | complete·decode·would·have,·except·for·the·parts·of·the·top·type·that·were·not |
| 170 | decoded.·The·undecoded·parts·are·on·their·places·in·the·structure·on·format | 170 | decoded.·The·undecoded·parts·are·on·their·places·in·the·structure·on·format |
| 171 | <code·class="inline">{TypeKey,UndecodedValue}</code>.</p><p>Each·undecoded·part·that·is·to·be·decoded·must·be·fed·into·function | 171 | <code·class="inline">{TypeKey,UndecodedValue}</code>.</p><p>Each·undecoded·part·that·is·to·be·decoded·must·be·fed·into·function |
| 172 | <code·class="inline">decode_part/2</code>·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 172 | <code·class="inline">decode_part/2</code>·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8340959971-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">PartMessage</span><span·class="p"·data-group-id="8340959971-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">'MyM[·...·truncated·by·diffoscope;·len:·285,·SHA:·f9c0812ff4513dbeceaf0ca90e32e393479bceb501596c76bc59bf5770269a10·...·]-2">)</span></code></pre><p><a·href=""·id="Exclusive-Instruction"></a></p><h3·id="writing-an-exclusive-decode-instruction"·class="section-heading"> |
| 173 | ··<a·href="#writing-an-exclusive-decode-instruction"·class="hover-link"> | 173 | ··<a·href="#writing-an-exclusive-decode-instruction"·class="hover-link"> |
| 174 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 174 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 175 | ··</a> | 175 | ··</a> |
| 176 | ··<span·class="text">Writing·an·Exclusive·Decode·Instruction</span> | 176 | ··<span·class="text">Writing·an·Exclusive·Decode·Instruction</span> |
| 177 | </h3> | 177 | </h3> |
| 178 | <p>This·instruction·is·written·in·the·configuration·file·in·the·following·format:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">ExclusiveDecodeInstruction</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 178 | <p>This·instruction·is·written·in·the·configuration·file·in·the·following·format:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">ExclusiveDecodeInstruction</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="0884102737-1">{</span><span·class="ss">exclusive_decode</span><span·class="p">,</span><span·class="p"·data-group-id="0884102737-2">{</span><span·class="n">ModuleName</span><span·class="p">,</span><span·class="n">DecodeInstructions</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·75,·SHA:·4a53a67a5a6f4fa8819ec23b0026f9414089f83cf12c9e7f55aac21849d68d13·...·]-1">}</span><span·class="p">.</span><span·class="w"> |
| 179 | </span><span·class="n">ModuleName</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id=" | 179 | </span><span·class="n">ModuleName</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="0884102737-3">(</span><span·class="p"·data-group-id="0884102737-3">)</span><span·class="w"> |
| 180 | </span><span·class="n">DecodeInstructions</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 180 | </span><span·class="n">DecodeInstructions</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="0884102737-4">[</span><span·class="n">DecodeInstruction</span><span·class="p"·data-group-id="0884102737-4">]</span><span·class="o">+</span><span·class="w"> |
| 181 | </span><span·class="n">DecodeInstruction</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 181 | </span><span·class="n">DecodeInstruction</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="0884102737-5">{</span><span·class="n">ExclusiveDecodeFunctionName</span><span·class="p">,</span><span·class="n">TypeList</span><span·class="p"·data-group-id="0884102737-5">}</span><span·class="w"> |
| 182 | </span><span·class="n">ExclusiveDecodeFunctionName</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id=" | 182 | </span><span·class="n">ExclusiveDecodeFunctionName</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="0884102737-6">(</span><span·class="p"·data-group-id="0884102737-6">)</span><span·class="w"> |
| 183 | </span><span·class="n">TypeList</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 183 | </span><span·class="n">TypeList</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="0884102737-7">[</span><span·class="n">TopType</span><span·class="p">,</span><span·class="n">ElementList</span><span·class="p"·data-group-id="0884102737-7">]</span><span·class="w"> |
| 184 | </span><span·class="n">ElementList</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 184 | </span><span·class="n">ElementList</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="0884102737-8">[</span><span·class="n">Element</span><span·class="p"·data-group-id="0884102737-8">]</span><span·class="o">+</span><span·class="w"> |
| 185 | </span><span·class="n">Element</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 185 | </span><span·class="n">Element</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="0884102737-9">{</span><span·class="n">Name</span><span·class="p">,</span><span·class="ss">parts</span><span·class="p"·data-group-id="0884102737-9">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 186 | ··········</span><span·class="p"·data-group-id=" | 186 | ··········</span><span·class="p"·data-group-id="0884102737-10">{</span><span·class="n">Name</span><span·class="p">,</span><span·class="ss">undecoded</span><span·class="p"·data-group-id="0884102737-10">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 187 | ··········</span><span·class="p"·data-group-id=" | 187 | ··········</span><span·class="p"·data-group-id="0884102737-11">{</span><span·class="n">Name</span><span·class="p">,</span><span·class="n">ElementList</span><span·class="p"·data-group-id="0884102737-11">}</span><span·class="w"> |
| 188 | </span><span·class="n">TopType</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id=" | 188 | </span><span·class="n">TopType</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="0884102737-12">(</span><span·class="p"·data-group-id="0884102737-12">)</span><span·class="w"> |
| 189 | </span><span·class="n">Name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id=" | 189 | </span><span·class="n">Name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="0884102737-13">(</span><span·class="p"·data-group-id="0884102737-13">)</span></code></pre><p>The·instruction·must·be·a·valid·Erlang·term·terminated·by·a·dot.</p><p>In·<code·class="inline">TypeList</code>·the·path·from·the·top·type·to·each·undecoded·subcomponent·is |
| 190 | described.·<code·class="inline">TopType</code>·is·the·name·of·a·top-level·type·in·the·ASN.1·specification. | 190 | described.·<code·class="inline">TopType</code>·is·the·name·of·a·top-level·type·in·the·ASN.1·specification. |
| 191 | The·action·for·each·component·in·<code·class="inline">ElementList</code>·is·described·by·one·of:</p><ul><li><code·class="inline">{Name,parts}</code></li><li><code·class="inline">{Name,undecoded}</code></li><li><code·class="inline">{Name,ElementList}</code></li></ul><p>The·use·and·effect·of·the·actions·are·as·follows:</p><ul><li><p><strong><code·class="inline">{Name,undecoded}</code></strong>·-·Leaves·the·element·undecoded.·The·type·of·<code·class="inline">Name</code>·can | 191 | The·action·for·each·component·in·<code·class="inline">ElementList</code>·is·described·by·one·of:</p><ul><li><code·class="inline">{Name,parts}</code></li><li><code·class="inline">{Name,undecoded}</code></li><li><code·class="inline">{Name,ElementList}</code></li></ul><p>The·use·and·effect·of·the·actions·are·as·follows:</p><ul><li><p><strong><code·class="inline">{Name,undecoded}</code></strong>·-·Leaves·the·element·undecoded.·The·type·of·<code·class="inline">Name</code>·can |
| 192 | be·any·ASN.1·type.·The·value·of·element·<code·class="inline">Name</code>·is·returned·as·a·tuple·(as | 192 | be·any·ASN.1·type.·The·value·of·element·<code·class="inline">Name</code>·is·returned·as·a·tuple·(as |
| 193 | mentioned·in·the·previous·section)·in·the·value·structure·of·the·top·type.</p></li><li><p><strong><code·class="inline">{Name,parts}</code></strong>·-·The·type·of·<code·class="inline">Name</code>·must·be·either·<code·class="inline">SEQUENCE·OF</code>·or | 193 | mentioned·in·the·previous·section)·in·the·value·structure·of·the·top·type.</p></li><li><p><strong><code·class="inline">{Name,parts}</code></strong>·-·The·type·of·<code·class="inline">Name</code>·must·be·either·<code·class="inline">SEQUENCE·OF</code>·or |
| 194 | <code·class="inline">SET·OF</code>.·The·action·implies·that·the·different·components·of·<code·class="inline">Name</code>·are·left | 194 | <code·class="inline">SET·OF</code>.·The·action·implies·that·the·different·components·of·<code·class="inline">Name</code>·are·left |
| 195 | undecoded.·The·value·of·<code·class="inline">Name</code>·is·returned·as·a·tuple·(as·mentioned·in·the | 195 | undecoded.·The·value·of·<code·class="inline">Name</code>·is·returned·as·a·tuple·(as·mentioned·in·the |
| 196 | previous·section)·where·the·second·element·is·a·list·of·binaries.·This·is | 196 | previous·section)·where·the·second·element·is·a·list·of·binaries.·This·is |
| Offset 257, 86 lines modified | Offset 257, 86 lines modified | ||
| 257 | ·{'GUI', | 257 | ·{'GUI', |
| 258 | ··[{decode_Window_exclusive, | 258 | ··[{decode_Window_exclusive, |
| 259 | ····['Window',[{status,[{buttonList,parts},{actions,undecoded}]}]]}, | 259 | ····['Window',[{status,[{buttonList,parts},{actions,undecoded}]}]]}, |
| 260 | ···{decode_Button_exclusive, | 260 | ···{decode_Button_exclusive, |
| 261 | ····['Button',[{number,undecoded}]]}]}}.</code></pre><p>The·following·figure·shows·the·bytes·of·a·<code·class="inline">Window:status</code>·message.·The | 261 | ····['Button',[{number,undecoded}]]}]}}.</code></pre><p>The·following·figure·shows·the·bytes·of·a·<code·class="inline">Window:status</code>·message.·The |
| 262 | components·<code·class="inline">buttonList</code>·and·<code·class="inline">actions</code>·are·excluded·from·decode.·Only·<code·class="inline">state</code>·and | 262 | components·<code·class="inline">buttonList</code>·and·<code·class="inline">actions</code>·are·excluded·from·decode.·Only·<code·class="inline">state</code>·and |
| 263 | <code·class="inline">enabled</code>·are·decoded·when·<code·class="inline">decode__Window_exclusive</code>·is·called.</p><p><img·src="assets/exclusive_Win_But.gif"·alt="Bytes·of·a·Window:status·Message"·title="Bytes·of·a·Window:status·Message"/></p><p>Here·follows·an·example·of·how·the·module.·Note·that·option·<code·class="inline">no_ok_wrapper</code>·is | 263 | <code·class="inline">enabled</code>·are·decoded·when·<code·class="inline">decode__Window_exclusive</code>·is·called.</p><p><img·src="assets/exclusive_Win_But.gif"·alt="Bytes·of·a·Window:status·Message"·title="Bytes·of·a·Window:status·Message"/></p><p>Here·follows·an·example·of·how·the·module.·Note·that·option·<code·class="inline">no_ok_wrapper</code>·is |
| 264 | used·to·make·the·example·more·concise.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">asn1ct</span><span·class="p">:</span><span·class="nf">compile</span><span·class="p"·data-group-id=" | 264 | used·to·make·the·example·more·concise.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">asn1ct</span><span·class="p">:</span><span·class="nf">compile</span><span·class="p"·data-group-id="4513511363-1">(</span><span·class="ss">'GUI'</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4513511363-2">[</span><span·class="ss">ber</span><span·class="p">,</span><span·class="ss">asn1config</span><span·class[·...·truncated·by·diffoscope;·len:·144,·SHA:·bb6bdad24980a7d7d5e2dbd2fa17da83c14040faa5a861fd476b556e092e9dd3·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 265 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 265 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 266 | 2>·</span><span·class="nf">rr</span><span·class="p"·data-group-id=" | 266 | 2>·</span><span·class="nf">rr</span><span·class="p"·data-group-id="4513511363-3">(</span><span·class="ss">'GUI'</span><span·class="p"·data-group-id="4513511363-3">)</span><span·class="p">.</span><span·class="w"> |
| 267 | </span><span·class="p"·data-group-id=" | 267 | </span><span·class="p"·data-group-id="4513511363-4">[</span><span·class="ss">'Action'</span><span·class="p">,</span><span·class="ss">'Button'</span><span·class="p">,</span><span·class="ss">'Status'</span><span·class="p"·data-group-id="4513511363-4">]</span><span·class="gp·unselectable"> |
| 268 | 3>·</span><span·class="n">ButtonMsg</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">'Button'</span><span·class="p"·data-group-id=" | 268 | 3>·</span><span·class="n">ButtonMsg</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">'Button'</span><span·class="p"·data-group-id="4513511363-5">{</span><span·class="ss">number</span><span·class="o">=</span><span·class="mi">123</span><span·class="p">,</span><span·class="ss">on</span><span·class="o">=</span><span·class="ss">true</span><span·class="p"·data-group-id="4513511363-5">}</span><span·class="p">.</span><span·class="w"> |
| 269 | </span><span·class="o">#</span><span·class="ss">'Button'</span><span·class="p"·data-group-id=" | 269 | </span><span·class="o">#</span><span·class="ss">'Button'</span><span·class="p"·data-group-id="4513511363-6">{</span><span·class="ss">number</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">123</span><span·class="p">,</span><span·class="ss">on</span><span·class="w">·</span><span·class="o">=</span><span·c[·...·truncated·by·diffoscope;·len:·86,·SHA:·4a60a3cb5fbce6f179fcc64ce2109ce759ab2387142fb9d5fdc8c6680956aa61·...·]-6">}</span><span·class="gp·unselectable"> |
| 270 | 4>·</span><span·class="n">ButtonBytes</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">'GUI'</span><span·class="p">:</span><span·class="nf">encode</span><span·class="p"·data-group-id=" | 270 | 4>·</span><span·class="n">ButtonBytes</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">'GUI'</span><span·class="p">:</span><span·class="nf">encode</span><span·class="p"·data-group-id="4513511363-7">(</span><span·class="ss">'Button'</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ButtonMsg</span><span·class="p"·data-group-id="4513511363-7">)</span><span·class="p">.</span><span·class="w"> |
| 271 | </span><span·class="p"·data-group-id=" | 271 | </span><span·class="p"·data-group-id="4513511363-8"><<</span><span·class="mi">48</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">128</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">123</span><[·...·truncated·by·diffoscope;·len:·191,·SHA:·2f5b75a904e8fa190ffb01d488780047b2ea6d3f8f84b77dd45a0fe873900bc4·...·]-8">>></span><span·class="gp·unselectable"> |
| 272 | 5>·</span><span·class="n">ExclusiveMsgButton</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">'GUI'</span><span·class="p">:</span><span·class="nf">decode_Button_exclusive</span><span·class="p"·data-group-id=" | 272 | 5>·</span><span·class="n">ExclusiveMsgButton</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">'GUI'</span><span·class="p">:</span><span·class="nf">decode_Button_exclusive</span><span·class="p"·data-group-id="4513511363-9">(</span><span·class="n">ButtonBytes</span><span·class="p"·data-group-id="4513511363-9">)</span><span·class="p">.</span><span·class="w"> |
| 273 | </span><span·class="o">#</span><span·class="ss">'Button'</span><span·class="p"·data-group-id=" | 273 | </span><span·class="o">#</span><span·class="ss">'Button'</span><span·class="p"·data-group-id="4513511363-10">{</span><span·class="ss">number</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4513511363-11">{</span><span·class="ss">'Button_number'</span><span·class="p">,</span><span·[·...·truncated·by·diffoscope;·len:·284,·SHA:·40e45c180f9c7a0f5b097a90dcc0a53ec6cbaa2a88a9749ddbea84c04fa828ad·...·]-11">}</span><span·class="p">,</span><span·class="w"> |
| 274 | ··········</span><span·class="ss">on</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">true</span><span·class="p"·data-group-id=" | 274 | ··········</span><span·class="ss">on</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">true</span><span·class="p"·data-group-id="4513511363-10">}</span><span·class="gp·unselectable"> |
| 275 | 6>·</span><span·class="p"·data-group-id=" | 275 | 6>·</span><span·class="p"·data-group-id="4513511363-13">{</span><span·class="n">UndecKey</span><span·class="p">,</span><span·class="n">UndecBytes</span><span·class="p"·data-group-id="4513511363-13">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">ExclusiveMsgButton</span><span·class="o">#</span><span·class="ss">'Button'</span><span·class="p">.</span><span·class="ss">number</span><span·class="p">.</span><span·class="w"> |
| 276 | </span><span·class="p"·data-group-id=" | 276 | </span><span·class="p"·data-group-id="4513511363-14">{</span><span·class="ss">'Button_number'</span><span·class="p">,</span><span·class="p"·data-group-id="4513511363-15"><<</span><span·class="mi">128</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><[·...·truncated·by·diffoscope;·len:·128,·SHA:·12a9cf41255ef87f8621b58d0f57ea246fae712b5c4296bfadd303f276ea1279·...·]-14">}</span><span·class="gp·unselectable"> |
| 277 | 7>·</span><span·class="nc">'GUI'</span><span·class="p">:</span><span·class="nf">decode_part</span><span·class="p"·data-group-id=" | 277 | 7>·</span><span·class="nc">'GUI'</span><span·class="p">:</span><span·class="nf">decode_part</span><span·class="p"·data-group-id="4513511363-16">(</span><span·class="n">UndecKey</span><span·class="p">,</span><span·class="w">·</span><span·class="n">UndecBytes</span><span·class="p"·data-group-id="4513511363-16">)</span><span·class="p">.</span><span·class="w"> |
| 278 | </span><span·class="mi">123</span><span·class="gp·unselectable"> | 278 | </span><span·class="mi">123</span><span·class="gp·unselectable"> |
| 279 | 8>·</span><span·class="n">WindowMsg</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 279 | 8>·</span><span·class="n">WindowMsg</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 280 | </span><span·class="p"·data-group-id=" | 280 | </span><span·class="p"·data-group-id="4513511363-17">{</span><span·class="ss">status</span><span·class="p">,</span><span·class="p"·data-group-id="4513511363-18">{</span><span·class="ss">'Status'</span><span·class="p">,</span><span·class="mi">35</span><span·class="p">,</span><span·class="w"> |
| 281 | ···</span><span·class="p"·data-group-id=" | 281 | ···</span><span·class="p"·data-group-id="4513511363-19">[</span><span·class="p"·data-group-id="4513511363-20">{</span><span·class="ss">'Button'</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="ss">true</span><span·class="p"·data-group-id="4513511[·...·truncated·by·diffoscope;·len:·3,·SHA:·a43231c2216f23db8d65bbd57e0ce6573654f9a102365cd4b345723f1437ab2b·...·]-20">}</span><span·class="p">,</span><span·class="w"> |
| 282 | ····</span><span·class="p"·data-group-id=" | 282 | ····</span><span·class="p"·data-group-id="4513511363-21">{</span><span·class="ss">'Button'</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="ss">false</span><span·class="p"·data-group-id="4513511363-21">}</span><span·class="p">,</span><span·class="w"> |
| 283 | ····</span><span·class="p"·data-group-id=" | 283 | ····</span><span·class="p"·data-group-id="4513511363-22">{</span><span·class="ss">'Button'</span><span·class="p">,</span><span·class="mi">5</span><span·class="p">,</span><span·class="ss">true</span><span·class="p"·data-group-id="4513511363-22">}</span><span·class="p">,</span><span·class="w"> |
| 284 | ····</span><span·class="p"·data-group-id=" | 284 | ····</span><span·class="p"·data-group-id="4513511363-23">{</span><span·class="ss">'Button'</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="ss">true</span><span·class="p"·data-group-id="4513511363-23">}</span><span·class="p">,</span><span·class="w"> |
| 285 | ····</span><span·class="p"·data-group-id=" | 285 | ····</span><span·class="p"·data-group-id="4513511363-24">{</span><span·class="ss">'Button'</span><span·class="p">,</span><span·class="mi">7</span><span·class="p">,</span><span·class="ss">false</span><span·class="p"·data-group-id="4513511363-24">}</span><span·class="p"·data-group-id="451351[·...·truncated·by·diffoscope;·len:·4,·SHA:·52558cb584c322ce06bc71777ddf400d2585bec7e64a888334aca9c24b016287·...·]-19">]</span><span·class="p">,</span><span·class="w"> |
| 286 | ···</span><span·class="ss">false</span><span·class="p">,</span><span·class="w"> | 286 | ···</span><span·class="ss">false</span><span·class="p">,</span><span·class="w"> |
| 287 | ···</span><span·class="p"·data-group-id=" | 287 | ···</span><span·class="p"·data-group-id="4513511363-25">{</span><span·class="ss">possibleActions</span><span·class="p">,</span><span·class="p"·data-group-id="4513511363-26">[</span><span·class="p"·data-group-id="4513511363-27">{</span><span·class="ss">'Action'</span><span·class="p">,</spa[·...·truncated·by·diffoscope;·len:·559,·SHA:·42554dbf3ba0f954e6422f5e35a8d01d522bd89a36eefbffb74094b36dd16332·...·]-17">}</span><span·class="p">.</span><span·class="w"> |
| 288 | </span><span·class="p"·data-group-id=" | 288 | </span><span·class="p"·data-group-id="4513511363-29">{</span><span·class="ss">status</span><span·class="p">,</span><span·class="o">#</span><span·class="ss">'Status'</span><span·class="p"·data-group-id="4513511363-30">{</span><span·class="ss">state</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">35</span><span·class="p">,</span><span·class="w"> |
| 289 | ········</span><span·class="ss">buttonList</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 289 | ········</span><span·class="ss">buttonList</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4513511363-31">[</span><span·class="o">#</span><span·class="ss">'Button'</span><span·class="p"·data-group-id="4513511363-32">{</span><span·class="ss">number</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="[·...·truncated·by·diffoscope;·len:·203,·SHA:·89dc67cf8f861c2bf96984bae8a88f9f920a61688ba32d997ced142ffecccc46·...·]-32">}</span><span·class="p">,</span><span·class="w"> |
| 290 | ······················</span><span·class="o">#</span><span·class="ss">'Button'</span><span·class="p"·data-group-id=" | 290 | ······················</span><span·class="o">#</span><span·class="ss">'Button'</span><span·class="p"·data-group-id="4513511363-33">{</span><span·class="ss">number</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">4</span><span·class="p">,</span><span·class="ss">on</span><span·class="w">·</span><span·class="o">=</span><span·cl[·...·truncated·by·diffoscope;·len:·86,·SHA:·0beddb41d5f2f8c780cd4c9f584adb5ba8c17718bf83a091295b08573740d0b2·...·]-33">}</span><span·class="p">,</span><span·class="w"> |
| 291 | ······················</span><span·class="o">#</span><span·class="ss">'Button'</span><span·class="p"·data-group-id=" | 291 | ······················</span><span·class="o">#</span><span·class="ss">'Button'</span><span·class="p"·data-group-id="4513511363-34">{</span><span·class="ss">number</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">5</span><span·class="p">,</span><span·class="ss">on</span><span·class="w">·</span><span·class="o">=</span><span·cl[·...·truncated·by·diffoscope;·len:·85,·SHA:·8aede2de64993db2a44e222a750ed9c665423db6d6cad18879fe5aa257d0898a·...·]-34">}</span><span·class="p">,</span><span·class="w"> |
| 292 | ······················</span><span·class="o">#</span><span·class="ss">'Button'</span><span·class="p"·data-group-id=" | 292 | ······················</span><span·class="o">#</span><span·class="ss">'Button'</span><span·class="p"·data-group-id="4513511363-35">{</span><span·class="ss">number</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">6</span><span·class="p">,</span><span·class="ss">on</span><span·class="w">·</span><span·class="o">=</span><span·cl[·...·truncated·by·diffoscope;·len:·85,·SHA:·8aede2de64993db2a44e222a750ed9c665423db6d6cad18879fe5aa257d0898a·...·]-35">}</span><span·class="p">,</span><span·class="w"> |
| 293 | ······················</span><span·class="o">#</span><span·class="ss">'Button'</span><span·class="p"·data-group-id=" | 293 | ······················</span><span·class="o">#</span><span·class="ss">'Button'</span><span·class="p"·data-group-id="4513511363-36">{</span><span·class="ss">number</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">7</span><span·class="p">,</span><span·class="ss">on</span><span·class="w">·</span><span·class="o">=</span><span·cl[·...·truncated·by·diffoscope;·len:·140,·SHA:·e4ae24430bb4267bae272ef97b93a81d9cb633d7d327201f499c0f1c25ebd921·...·]-31">]</span><span·class="p">,</span><span·class="w"> |
| 294 | ········</span><span·class="ss">enabled</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">false</span><span·class="p">,</span><span·class="w"> | 294 | ········</span><span·class="ss">enabled</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">false</span><span·class="p">,</span><span·class="w"> |
| 295 | ········</span><span·class="ss">actions</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 295 | ········</span><span·class="ss">actions</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4513511363-37">{</span><span·class="ss">possibleActions</span><span·class="p">,</span><span·class="p"·data-group-id="4513511363-38">[</span><span·class="o">#</span><span·class="ss">'Action'</span><span·class="p"·data-group-id="4513511363-39">{</span><span·class="ss">number</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">16</span><span·class="p">,</span><span·class="w"> |
| 296 | ··············································</span><span·class="ss">handle</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">'Button'</span><span·class="p"·data-group-id=" | 296 | ··············································</span><span·class="ss">handle</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">'Button'</span><span·class="p"·data-group-id="4513511363-40">{</span><span·class="ss">number</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">17</span><span·class="p">,</span><span·class="ss">on</span><span·class="w">·</span><span·class="o">=</span><span·c[·...·truncated·by·diffoscope;·len:·356,·SHA:·2fa3d3c61b486fbef65e66afba4d26370cb0eea9ad403cc42eabe9342fc24b69·...·]-29">}</span><span·class="gp·unselectable"> |
| 297 | 9>·</span><span·class="n">WindowBytes</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">'GUI'</span><span·class="p">:</span><span·class="nf">encode</span><span·class="p"·data-group-id=" | 297 | 9>·</span><span·class="n">WindowBytes</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">'GUI'</span><span·class="p">:</span><span·class="nf">encode</span><span·class="p"·data-group-id="4513511363-41">(</span><span·class="ss">'Window'</span><span·class="p">,</span><span·class="w">·</span><span·class="n">WindowMsg</span><span·class="p"·data-group-id="4513511363-41">)</span><span·class="p">.</span><span·class="w"> |
| 298 | </span><span·class="p"·data-group-id=" | 298 | </span><span·class="p"·data-group-id="4513511363-42"><<</span><span·class="mi">161</span><span·class="p">,</span><span·class="mi">65</span><span·class="p">,</span><span·class="mi">128</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">35</span><span·class="p">,</span><span·class="mi">161</span><span·class="p">,</span><span·class="mi">40</span><span·class="p">,</span><span·class="mi">48</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">128</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">129</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">255</span><span·class="p">,</span><span·class="mi">48</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">128</span><span·class="p">,</span><span·class="w"> |
| 299 | ··</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">129</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">48</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">128</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">5</span><span·class="p">,</span><span·class="mi">129</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id=" | 299 | ··</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">129</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">48</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">128</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">5</span><span·class="p">,</span><span·class="mi">129</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="4513511363-42">>></span><span·class="gp·unselectable"> |
| 300 | 10>·</span><span·class="p"·data-group-id=" | 300 | 10>·</span><span·class="p"·data-group-id="4513511363-43">{</span><span·class="ss">status</span><span·class="p">,</span><span·class="o">#</span><span·class="ss">'Status'</span><span·class="p"·data-group-id="4513511363-44">{</span><span·class="ss">buttonList</span><span·class="o">=</span><sp[·...·truncated·by·diffoscope;·len:·300,·SHA:·7038ccd8b212ac0723ee4a04cd968c4fc16eae5292c576be64e2aeead8a1e653·...·]-43">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 301 | </span><span·class="nc">'GUI'</span><span·class="p">:</span><span·class="nf">decode_Window_exclusive</span><span·class="p"·data-group-id=" | 301 | </span><span·class="nc">'GUI'</span><span·class="p">:</span><span·class="nf">decode_Window_exclusive</span><span·class="p"·data-group-id="4513511363-46">(</span><span·class="n">WindowBytes</span><span·class="p"·data-group-id="4513511363-46">)</span><span·class="p">.</span><span·class="w"> |
| 302 | </span><span·class="p"·data-group-id=" | 302 | </span><span·class="p"·data-group-id="4513511363-47">{</span><span·class="ss">status</span><span·class="p">,</span><span·class="o">#</span><span·class="ss">'Status'</span><span·class="p"·data-group-id="4513511363-48">{</span><span·class="ss">state</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">35</span><span·class="p">,</span><span·class="w"> |
| 303 | ··················</span><span·class="ss">buttonList</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 303 | ··················</span><span·class="ss">buttonList</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4513511363-49">{</span><span·class="ss">'Status_buttonList'</span><span·class="p">,</span><span·class="p"·data-group-id="4513511363-50">[</span><span·class="p"·data-group-id="4513511363-51"><<</span><span·class="mi">48</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">128</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">129</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> |
| 304 | ·······················································</span><span·class="mi">255</span><span·class="p"·data-group-id=" | 304 | ·······················································</span><span·class="mi">255</span><span·class="p"·data-group-id="4513511363-51">>></span><span·class="p">,</span><span·class="w"> |
| 305 | ·····················································</span><span·class="p"·data-group-id=" | 305 | ·····················································</span><span·class="p"·data-group-id="4513511363-52"><<</span><span·class="mi">48</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">128</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">4</span><s[·...·truncated·by·diffoscope;·len:·188,·SHA:·dc7fd121451242b574a354d8f61979c7794d24dffdc86bec97f53a0b6dc87aae·...·]-52">>></span><span·class="p">,</span><span·class="w"> |
| 306 | ·····················································</span><span·class="p"·data-group-id=" | 306 | ·····················································</span><span·class="p"·data-group-id="4513511363-53"><<</span><span·class="mi">48</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">128</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">5</span><s[·...·truncated·by·diffoscope;·len:·190,·SHA:·92712b6ef36edbee6a268dd4d3fa52f73236c70f1d57e4da786a9e45b2e7efe7·...·]-53">>></span><span·class="p">,</span><span·class="w"> |
| 307 | ·····················································</span><span·class="p"·data-group-id=" | 307 | ·····················································</span><span·class="p"·data-group-id="4513511363-54"><<</span><span·class="mi">48</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">128</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">6</span><s[·...·truncated·by·diffoscope;·len:·190,·SHA:·92712b6ef36edbee6a268dd4d3fa52f73236c70f1d57e4da786a9e45b2e7efe7·...·]-54">>></span><span·class="p">,</span><span·class="w"> |
| 308 | ·····················································</span><span·class="p"·data-group-id=" | 308 | ·····················································</span><span·class="p"·data-group-id="4513511363-55"><<</span><span·class="mi">48</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">128</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">7</span><s[·...·truncated·by·diffoscope;·len:·303,·SHA:·901a455c4eec4e90be8b0f51b955d550f52fc0e24838ddb9c8c82e13e7870f9c·...·]-49">}</span><span·class="p">,</span><span·class="w"> |
| 309 | ··················</span><span·class="ss">enabled</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">false</span><span·class="p">,</span><span·class="w"> | 309 | ··················</span><span·class="ss">enabled</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">false</span><span·class="p">,</span><span·class="w"> |
| 310 | ··················</span><span·class="ss">actions</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 310 | ··················</span><span·class="ss">actions</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4513511363-56">{</span><span·class="ss">'Status_actions'</span><span·class="p">,</span><span·class="p"·data-group-id="4513511363-57"><<</span><span·class="mi">163</span><span·class="p">,</span><span·class="mi">15</span><span·class="p">,</span><span·class="mi">160</span><span·class="p">,</span><span·class="mi">13</span><span·class="p">,</span><span·class="mi">48</span><span·class="p">,</span><span·class="mi">11</span><span·class="p">,</span><span·class="mi">128</span><span·class="p">,</span><span·class="w"> |
| 311 | ················································</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">16</span><span·class="p">,</span><span·class="mi">161</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">128</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">17</span><span·class="p">,</span><span·class="mi">129</span><span·class="p">,</span><span·class="w"> | 311 | ················································</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">16</span><span·class="p">,</span><span·class="mi">161</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">128</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">17</span><span·class="p">,</span><span·class="mi">129</span><span·class="p">,</span><span·class="w"> |
| 312 | ················································</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">255</span><span·class="p"·data-group-id=" | 312 | ················································</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">255</span><span·class="p"·data-group-id="4513511363-57">>></span><span·class="p"·data-group-id="4513511363-56">}</span><span·class="p"·data-group-id="4513511363-48">}</span><span·class="p"·data-group-id="4513511363-47">}</span><span·class="gp·unselectable"> |
| 313 | 11>·</span><span·class="nc">'GUI'</span><span·class="p">:</span><span·class="nf">decode_part</span><span·class="p"·data-group-id=" | 313 | 11>·</span><span·class="nc">'GUI'</span><span·class="p">:</span><span·class="nf">decode_part</span><span·class="p"·data-group-id="4513511363-58">(</span><span·class="n">UndecWindowKey</span><span·class="p">,</span><span·class="w">·</span><span·class="n">UndecWindowParts</span><span·class="p"·data-group-id="4513511363-58">)</span><span·class="p">.</span><span·class="w"> |
| 314 | </span><span·class="p"·data-group-id=" | 314 | </span><span·class="p"·data-group-id="4513511363-59">[</span><span·class="o">#</span><span·class="ss">'Button'</span><span·class="p"·data-group-id="4513511363-60">{</span><span·class="ss">number</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="[·...·truncated·by·diffoscope;·len:·203,·SHA:·89dc67cf8f861c2bf96984bae8a88f9f920a61688ba32d997ced142ffecccc46·...·]-60">}</span><span·class="p">,</span><span·class="w"> |
| 315 | ·</span><span·class="o">#</span><span·class="ss">'Button'</span><span·class="p"·data-group-id=" | 315 | ·</span><span·class="o">#</span><span·class="ss">'Button'</span><span·class="p"·data-group-id="4513511363-61">{</span><span·class="ss">number</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">4</span><span·class="p">,</span><span·class="ss">on</span><span·class="w">·</span><span·class="o">=</span><span·cl[·...·truncated·by·diffoscope;·len:·86,·SHA:·0beddb41d5f2f8c780cd4c9f584adb5ba8c17718bf83a091295b08573740d0b2·...·]-61">}</span><span·class="p">,</span><span·class="w"> |
| 316 | ·</span><span·class="o">#</span><span·class="ss">'Button'</span><span·class="p"·data-group-id=" | 316 | ·</span><span·class="o">#</span><span·class="ss">'Button'</span><span·class="p"·data-group-id="4513511363-62">{</span><span·class="ss">number</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">5</span><span·class="p">,</span><span·class="ss">on</span><span·class="w">·</span><span·class="o">=</span><span·cl[·...·truncated·by·diffoscope;·len:·85,·SHA:·8aede2de64993db2a44e222a750ed9c665423db6d6cad18879fe5aa257d0898a·...·]-62">}</span><span·class="p">,</span><span·class="w"> |
| 317 | ·</span><span·class="o">#</span><span·class="ss">'Button'</span><span·class="p"·data-group-id=" | 317 | ·</span><span·class="o">#</span><span·class="ss">'Button'</span><span·class="p"·data-group-id="4513511363-63">{</span><span·class="ss">number</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">6</span><span·class="p">,</span><span·class="ss">on</span><span·class="w">·</span><span·class="o">=</span><span·cl[·...·truncated·by·diffoscope;·len:·85,·SHA:·8aede2de64993db2a44e222a750ed9c665423db6d6cad18879fe5aa257d0898a·...·]-63">}</span><span·class="p">,</span><span·class="w"> |
| 318 | ·</span><span·class="o">#</span><span·class="ss">'Button'</span><span·class="p"·data-group-id=" | 318 | ·</span><span·class="o">#</span><span·class="ss">'Button'</span><span·class="p"·data-group-id="4513511363-64">{</span><span·class="ss">number</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">7</span><span·class="p">,</span><span·class="ss">on</span><span·class="w">·</span><span·class="o">=</span><span·cl[·...·truncated·by·diffoscope;·len:·140,·SHA:·e649242075c9b151cf2b16bb926602877bed69e6b2bb42558d10be6a560383e5·...·]-59">]</span><span·class="gp·unselectable"> |
| 319 | 12>·</span><span·class="nc">'GUI'</span><span·class="p">:</span><span·class="nf">decode_part</span><span·class="p"·data-group-id=" | 319 | 12>·</span><span·class="nc">'GUI'</span><span·class="p">:</span><span·class="nf">decode_part</span><span·class="p"·data-group-id="4513511363-65">(</span><span·class="n">UndecWindowKey</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">hd</span><span·class="p"·data-group-id="4513511363-66">(</span><span·class="n">UndecWindowParts</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·66,·SHA:·dc0d8926af4540100731963c9c7c4f6cad694491168ad0954e8413aec0412d03·...·]-65">)</span><span·class="p">.</span><span·class="w"> |
| 320 | </span><span·class="o">#</span><span·class="ss">'Button'</span><span·class="p"·data-group-id=" | 320 | </span><span·class="o">#</span><span·class="ss">'Button'</span><span·class="p"·data-group-id="4513511363-67">{</span><span·class="ss">number</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">3</span><span·class="p">,</span><span·class="ss">on</span><span·class="w">·</span><span·class="o">=</span><span·cl[·...·truncated·by·diffoscope;·len:·85,·SHA:·8aede2de64993db2a44e222a750ed9c665423db6d6cad18879fe5aa257d0898a·...·]-67">}</span><span·class="gp·unselectable"> |
| 321 | 13>·</span><span·class="p"·data-group-id=" | 321 | 13>·</span><span·class="p"·data-group-id="4513511363-68">{</span><span·class="ss">status</span><span·class="p">,</span><span·class="o">#</span><span·class="ss">'Status'</span><span·class="p"·data-group-id="4513511363-69">{</span><span·class="ss">actions</span><span·class="o">=</span><span·[·...·truncated·by·diffoscope;·len:·518,·SHA:·4dc1567dc9cfea39425115d450b24d7e208894955d78e2be86ef204daa1cb24d·...·]-71">)</span><span·class="p">.</span><span·class="w"> |
| 322 | </span><span·class="p"·data-group-id=" | 322 | </span><span·class="p"·data-group-id="4513511363-72">{</span><span·class="ss">status</span><span·class="p">,</span><span·class="o">#</span><span·class="ss">'Status'</span><span·class="p"·data-group-id="4513511363-73">{</span><span·class="ss">state</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">35</span><span·class="p">,</span><span·class="w"> |
| 323 | ··················</span><span·class="ss">buttonList</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 323 | ··················</span><span·class="ss">buttonList</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4513511363-74">{</span><span·class="ss">'Status_buttonList'</span><span·class="p">,</span><span·class="p"·data-group-id="4513511363-75">[</span><span·class="p"·data-group-id="4513511363-76"><<</span><span·class="mi">48</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">128</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">129</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> |
| 324 | ·······················································</span><span·class="mi">255</span><span·class="p"·data-group-id=" | 324 | ·······················································</span><span·class="mi">255</span><span·class="p"·data-group-id="4513511363-76">>></span><span·class="p">,</span><span·class="w"> |
| 325 | ·····················································</span><span·class="p"·data-group-id=" | 325 | ·····················································</span><span·class="p"·data-group-id="4513511363-77"><<</span><span·class="mi">48</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">128</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">4</span><s[·...·truncated·by·diffoscope;·len:·188,·SHA:·dc7fd121451242b574a354d8f61979c7794d24dffdc86bec97f53a0b6dc87aae·...·]-77">>></span><span·class="p">,</span><span·class="w"> |
| 326 | ·····················································</span><span·class="p"·data-group-id=" | 326 | ·····················································</span><span·class="p"·data-group-id="4513511363-78"><<</span><span·class="mi">48</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">128</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">5</span><s[·...·truncated·by·diffoscope;·len:·190,·SHA:·92712b6ef36edbee6a268dd4d3fa52f73236c70f1d57e4da786a9e45b2e7efe7·...·]-78">>></span><span·class="p">,</span><span·class="w"> |
| 327 | ·····················································</span><span·class="p"·data-group-id=" | 327 | ·····················································</span><span·class="p"·data-group-id="4513511363-79"><<</span><span·class="mi">48</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">128</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">6</span><s[·...·truncated·by·diffoscope;·len:·190,·SHA:·92712b6ef36edbee6a268dd4d3fa52f73236c70f1d57e4da786a9e45b2e7efe7·...·]-79">>></span><span·class="p">,</span><span·class="w"> |
| 328 | ·····················································</span><span·class="p"·data-group-id=" | 328 | ·····················································</span><span·class="p"·data-group-id="4513511363-80"><<</span><span·class="mi">48</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">128</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">7</span><s[·...·truncated·by·diffoscope;·len:·303,·SHA:·9d996359dddda1a9cbf2c7936345cae7f88606af49a7b2232cf216e071ea2970·...·]-74">}</span><span·class="p">,</span><span·class="w"> |
| 329 | ··················</span><span·class="ss">enabled</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">false</span><span·class="p">,</span><span·class="w"> | 329 | ··················</span><span·class="ss">enabled</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">false</span><span·class="p">,</span><span·class="w"> |
| 330 | ··················</span><span·class="ss">actions</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 330 | ··················</span><span·class="ss">actions</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4513511363-81">{</span><span·class="ss">'Status_actions'</span><span·class="p">,</span><span·class="p"·data-group-id="4513511363-82"><<</span><span·class="mi">163</span><span·class="p">,</span><span·class="mi">15</span><span·class="p">,</span><span·class="mi">160</span><span·class="p">,</span><span·class="mi">13</span><span·class="p">,</span><span·class="mi">48</span><span·class="p">,</span><span·class="mi">11</span><span·class="p">,</span><span·class="mi">128</span><span·class="p">,</span><span·class="w"> |
| 331 | ················································</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">16</span><span·class="p">,</span><span·class="mi">161</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">128</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">17</span><span·class="p">,</span><span·class="mi">129</span><span·class="p">,</span><span·class="w"> | 331 | ················································</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">16</span><span·class="p">,</span><span·class="mi">161</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">128</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">17</span><span·class="p">,</span><span·class="mi">129</span><span·class="p">,</span><span·class="w"> |
| 332 | ················································</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">255</span><span·class="p"·data-group-id=" | 332 | ················································</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">255</span><span·class="p"·data-group-id="4513511363-82">>></span><span·class="p"·data-group-id="4513511363-81">}</span><span·class="p"·data-group-id="4513511363-73">}</span><span·class="p"·data-group-id="4513511363-72">}</span><span·class="gp·unselectable"> |
| 333 | 14>·</span><span·class="nc">'GUI'</span><span·class="p">:</span><span·class="nf">decode_part</span><span·class="p"·data-group-id=" | 333 | 14>·</span><span·class="nc">'GUI'</span><span·class="p">:</span><span·class="nf">decode_part</span><span·class="p"·data-group-id="4513511363-83">(</span><span·class="n">ChoiceKey</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ChoiceUndec</span><span·class="p"·data-group-id="4513511363-83">)</span><span·class="p">.</span><span·class="w"> |
| 334 | </span><span·class="p"·data-group-id=" | 334 | </span><span·class="p"·data-group-id="4513511363-84">{</span><span·class="ss">possibleActions</span><span·class="p">,</span><span·class="p"·data-group-id="4513511363-85">[</span><span·class="o">#</span><span·class="ss">'Action'</span><span·class="p"·data-group-id="4513511363-86">{</span><span·class="ss">number</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">16</span><span·class="p">,</span><span·class="w"> |
| 335 | ····························</span><span·class="ss">handle</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">'Button'</span><span·class="p"·data-group-id=" | 335 | ····························</span><span·class="ss">handle</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">'Button'</span><span·class="p"·data-group-id="4513511363-87">{</span><span·class="ss">number</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">17</span><span·class="p">,</span><span·class="ss">on</span><span·class="w">·</span><span·class="o">=</span><span·c[·...·truncated·by·diffoscope;·len:·248,·SHA:·b602f8be17298c214fb7b8e2b6d17b1107e115ac3dea08c85af63f2c74004436·...·]-84">}</span></code></pre><h2·id="selective-decode"·class="section-heading"> |
| 336 | ··<a·href="#selective-decode"·class="hover-link"> | 336 | ··<a·href="#selective-decode"·class="hover-link"> |
| 337 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 337 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
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| Offset 481, 17 lines modified | Offset 481, 17 lines modified | ||
| 481 | <p>Performs·a·test·of·encode·and·decode·of·types·in·<code·class="inline">Module</code>.</p><p>The·generated·functions·are·called·by·this·function.·This·function·is | 481 | <p>Performs·a·test·of·encode·and·decode·of·types·in·<code·class="inline">Module</code>.</p><p>The·generated·functions·are·called·by·this·function.·This·function·is |
| 482 | useful·for·testing·to·ensure·that·the·generated·encode·and·decode | 482 | useful·for·testing·to·ensure·that·the·generated·encode·and·decode |
| 483 | functions·as·well·as·the·general·runtime·support·work·as·expected.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Currently,·the·<code·class="inline">test</code>·functions·have·many·limitations.·Essentially,·they·will | 483 | functions·as·well·as·the·general·runtime·support·work·as·expected.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Currently,·the·<code·class="inline">test</code>·functions·have·many·limitations.·Essentially,·they·will |
| 484 | mostly·work·for·old·specifications·based·on·the·1997·standard·for·ASN.1,·but | 484 | mostly·work·for·old·specifications·based·on·the·1997·standard·for·ASN.1,·but |
| 485 | not·for·most·modern-style·applications.·Another·limitation·is·that·the·<code·class="inline">test</code> | 485 | not·for·most·modern-style·applications.·Another·limitation·is·that·the·<code·class="inline">test</code> |
| 486 | functions·may·not·work·if·options·that·change·code·generations·strategies·such | 486 | functions·may·not·work·if·options·that·change·code·generations·strategies·such |
| 487 | as·the·options·<code·class="inline">macro_name_prefix</code>·and·<code·class="inline">record_name_prefix</code>·have·been·used.</p></section><ul><li><a·href="#test/1"><code·class="inline">test/1</code></a>·iterates·over·all·types·in·<code·class="inline">Module</code>.</li><li><a·href="#test/2"><code·class="inline">test/2</code></a>·tests·type·<code·class="inline">Type</code>·with·a·random·value.</li><li><a·href="#test/3"><code·class="inline">test/3</code></a>·tests·type·<code·class="inline">Type</code>·with·<code·class="inline">Value</code>.</li></ul><p>Schematically,·the·following·occurs·for·each·type·in·the·module:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 487 | as·the·options·<code·class="inline">macro_name_prefix</code>·and·<code·class="inline">record_name_prefix</code>·have·been·used.</p></section><ul><li><a·href="#test/1"><code·class="inline">test/1</code></a>·iterates·over·all·types·in·<code·class="inline">Module</code>.</li><li><a·href="#test/2"><code·class="inline">test/2</code></a>·tests·type·<code·class="inline">Type</code>·with·a·random·value.</li><li><a·href="#test/3"><code·class="inline">test/3</code></a>·tests·type·<code·class="inline">Type</code>·with·<code·class="inline">Value</code>.</li></ul><p>Schematically,·the·following·occurs·for·each·type·in·the·module:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="3885623317-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Value</span><span·class="p"·data-group-id="3885623317-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·c[·...·truncated·by·diffoscope;·len:·274,·SHA:·c9dbcbce0c1ff5fa98869fa5b5b0f1735d0409cf8546f021dac908e3008543e8·...·]-2">)</span><span·class="p">,</span><span·class="w"> |
| 488 | </span><span·class="p"·data-group-id=" | 488 | </span><span·class="p"·data-group-id="3885623317-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Bytes</span><span·class="p"·data-group-id="3885623317-3">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·c[·...·truncated·by·diffoscope;·len:·273,·SHA:·e8d074f0f84e964af2fda548ceeb0e3409dd6114b8cc8287fcc5b3378e2446b2·...·]-4">)</span><span·class="p">,</span><span·class="w"> |
| 489 | </span><span·class="p"·data-group-id=" | 489 | </span><span·class="p"·data-group-id="3885623317-5">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Value</span><span·class="p"·data-group-id="3885623317-5">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·c[·...·truncated·by·diffoscope;·len:·273,·SHA:·f94293adbbc5b7ef91e72db975d41ecfb9c5c3d2a56231750337bc8b0403c8b0·...·]-6">)</span><span·class="p">.</span></code></pre><p>The·<code·class="inline">test</code>·functions·use·the·<code·class="inline">*.asn1db</code>·files·for·all·included·modules.·If·they |
| 490 | are·located·in·a·different·directory·than·the·current·working·directory,·use·the | 490 | are·located·in·a·different·directory·than·the·current·working·directory,·use·the |
| 491 | <code·class="inline">include</code>·option·to·add·paths.·This·is·only·needed·when·automatically·generating | 491 | <code·class="inline">include</code>·option·to·add·paths.·This·is·only·needed·when·automatically·generating |
| 492 | values.·For·static·values·using·<code·class="inline">Value</code>·no·options·are·needed.</p> | 492 | values.·For·static·values·using·<code·class="inline">Value</code>·no·options·are·needed.</p> |
| 493 | ··</section> | 493 | ··</section> |
| 494 | </section> | 494 | </section> |
| 495 | <section·class="detail"·id="value/2"> | 495 | <section·class="detail"·id="value/2"> |
| Offset 211, 23 lines modified | Offset 211, 23 lines modified | ||
| 211 | <a·href="write_test_chapter.html#intro">Writing·Test·Suites</a>.</p><p>A·test·case·is·considered·successful·if·it·returns·to·the·caller,·no·matter·what | 211 | <a·href="write_test_chapter.html#intro">Writing·Test·Suites</a>.</p><p>A·test·case·is·considered·successful·if·it·returns·to·the·caller,·no·matter·what |
| 212 | the·returned·value·is.·However,·a·few·return·values·have·special·meaning·as | 212 | the·returned·value·is.·However,·a·few·return·values·have·special·meaning·as |
| 213 | follows:</p><ul><li><code·class="inline">{skip,Reason}</code>·indicates·that·the·test·case·is·skipped.</li><li><code·class="inline">{comment,Comment}</code>·prints·a·comment·in·the·log·for·the·test·case.</li><li><code·class="inline">{save_config,Config}</code>·makes·the·<code·class="inline">Common·Test</code>·test·server·pass·<code·class="inline">Config</code>·to | 213 | follows:</p><ul><li><code·class="inline">{skip,Reason}</code>·indicates·that·the·test·case·is·skipped.</li><li><code·class="inline">{comment,Comment}</code>·prints·a·comment·in·the·log·for·the·test·case.</li><li><code·class="inline">{save_config,Config}</code>·makes·the·<code·class="inline">Common·Test</code>·test·server·pass·<code·class="inline">Config</code>·to |
| 214 | the·next·test·case.</li></ul><p>A·test·case·failure·is·specified·as·a·runtime·error·(a·crash),·no·matter·what | 214 | the·next·test·case.</li></ul><p>A·test·case·failure·is·specified·as·a·runtime·error·(a·crash),·no·matter·what |
| 215 | the·reason·for·termination·is.·If·you·use·Erlang·pattern·matching·effectively, | 215 | the·reason·for·termination·is.·If·you·use·Erlang·pattern·matching·effectively, |
| 216 | you·can·take·advantage·of·this·property.·The·result·is·concise·and·readable·test | 216 | you·can·take·advantage·of·this·property.·The·result·is·concise·and·readable·test |
| 217 | case·functions·that·look·much·more·like·scripts·than·actual·programs.·A·simple | 217 | case·functions·that·look·much·more·like·scripts·than·actual·programs.·A·simple |
| 218 | example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">session</span><span·class="p"·data-group-id=" | 218 | example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">session</span><span·class="p"·data-group-id="9334858068-1">(</span><span·class="p">_</span><span·class="n">Config</span><span·class="p"·data-group-id="9334858068-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 219 | ····</span><span·class="p"·data-group-id=" | 219 | ····</span><span·class="p"·data-group-id="9334858068-2">{</span><span·class="ss">started</span><span·class="p">,</span><span·class="n">ServerId</span><span·class="p"·data-group-id="9334858068-2">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">my_ser[·...·truncated·by·diffoscope;·len:·156,·SHA:·06a742a8d1673aa3501b103e69e61ff6103b9b08a9779dcf67ec8023f16bced6·...·]8-3">)</span><span·class="p">,</span><span·class="w"> |
| 220 | ····</span><span·class="p"·data-group-id=" | 220 | ····</span><span·class="p"·data-group-id="9334858068-4">{</span><span·class="ss">clients</span><span·class="p">,</span><span·class="p"·data-group-id="9334858068-5">[</span><span·class="p"·data-group-id="9334858068-5">]</span><span·class="p"·data-group-id="9334858068-4">}</span><span·class="w">·</s[·...·truncated·by·diffoscope;·len:·268,·SHA:·c8039c29aa6db83a6cfb4d4ec65a66a3688013802e0a43141f7ac9fb4730e5dd·...·]8-6">)</span><span·class="p">,</span><span·class="w"> |
| 221 | ····</span><span·class="n">MyId</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id=" | 221 | ····</span><span·class="n">MyId</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="9334858068-7">(</span><span·class="p"·data-group-id="9334858068-7">)</span><span·class="p">,</span><span·class="w"> |
| 222 | ····</span><span·class="ss">connected</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">my_server</span><span·class="p">:</span><span·class="nf">connect</span><span·class="p"·data-group-id=" | 222 | ····</span><span·class="ss">connected</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">my_server</span><span·class="p">:</span><span·class="nf">connect</span><span·class="p"·data-group-id="9334858068-8">(</span><span·class="n">ServerId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">MyId</span><span·class="p"·data-group-id="9334858068-8">)</span><span·class="p">,</span><span·class="w"> |
| 223 | ····</span><span·class="p"·data-group-id=" | 223 | ····</span><span·class="p"·data-group-id="9334858068-9">{</span><span·class="ss">clients</span><span·class="p">,</span><span·class="p"·data-group-id="9334858068-10">[</span><span·class="n">MyId</span><span·class="p"·data-group-id="9334858068-10">]</span><span·class="p"·data-group-id="9334858068-9"[·...·truncated·by·diffoscope;·len:·298,·SHA:·7f5b43bfe544dc03b1858abd7ce2666283fa354d9594fc1e59de0fde124c7cbc·...·]8-11">)</span><span·class="p">,</span><span·class="w"> |
| 224 | ····</span><span·class="ss">disconnected</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">my_server</span><span·class="p">:</span><span·class="nf">disconnect</span><span·class="p"·data-group-id=" | 224 | ····</span><span·class="ss">disconnected</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">my_server</span><span·class="p">:</span><span·class="nf">disconnect</span><span·class="p"·data-group-id="9334858068-12">(</span><span·class="n">ServerId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">MyId</span><span·class="p"·data-group-id="9334858068-12">)</span><span·class="p">,</span><span·class="w"> |
| 225 | ····</span><span·class="p"·data-group-id=" | 225 | ····</span><span·class="p"·data-group-id="9334858068-13">{</span><span·class="ss">clients</span><span·class="p">,</span><span·class="p"·data-group-id="9334858068-14">[</span><span·class="p"·data-group-id="9334858068-14">]</span><span·class="p"·data-group-id="9334858068-13">}</span><span·class="w">[·...·truncated·by·diffoscope;·len:·273,·SHA:·7fc0f152bb745dc4eb06c7e2992a0d4c10396c7764dddd7bba305c5c9fbaebd4·...·]8-15">)</span><span·class="p">,</span><span·class="w"> |
| 226 | ····</span><span·class="ss">stopped</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">my_server</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id=" | 226 | ····</span><span·class="ss">stopped</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">my_server</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id="9334858068-16">(</span><span·class="n">ServerId</span><span·class="p"·data-group-id="9334858068-16">)</span><span·class="p">.</span></code></pre><p>As·a·test·suite·runs,·all·information·(including·output·to·<code·class="inline">stdout</code>)·is·recorded |
| 227 | in·many·different·log·files.·A·minimum·of·information·is·displayed·in·the·user | 227 | in·many·different·log·files.·A·minimum·of·information·is·displayed·in·the·user |
| 228 | console·(only·start·and·stop·information,·plus·a·note·for·each·failed·test | 228 | console·(only·start·and·stop·information,·plus·a·note·for·each·failed·test |
| 229 | case).</p><p>The·result·from·each·test·case·is·recorded·in·a·dedicated·HTML·log·file,·created | 229 | case).</p><p>The·result·from·each·test·case·is·recorded·in·a·dedicated·HTML·log·file,·created |
| 230 | for·the·particular·test·run.·An·overview·page·displays·each·test·case | 230 | for·the·particular·test·run.·An·overview·page·displays·each·test·case |
| 231 | represented·by·a·table·row·showing·total·execution·time,·if·the·case·was | 231 | represented·by·a·table·row·showing·total·execution·time,·if·the·case·was |
| 232 | successful,·failed,·or·skipped,·plus·an·optional·user·comment.·For·a·failed·test | 232 | successful,·failed,·or·skipped,·plus·an·optional·user·comment.·For·a·failed·test |
| 233 | case,·the·reason·for·termination·is·also·printed·in·the·comment·field.·The | 233 | case,·the·reason·for·termination·is·also·printed·in·the·comment·field.·The |
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| 3 | ?rw-r--r--··6.1·unx···103544·bx·defN·25-Mar-18·0 | 3 | ?rw-r--r--··6.1·unx···103544·bx·defN·25-Mar-18·08:46·OEBPS/write_test_chapter.xhtml |
| 4 | ?rw-r--r--··6.1·unx·····3151·bx·defN·25-Mar-18·0 | 4 | ?rw-r--r--··6.1·unx·····3151·bx·defN·25-Mar-18·08:46·OEBPS/why_test_chapter.xhtml |
| 5 | ?rw-r--r--··6.1·unx····10048·bx·defN·25-Mar-18·0 | 5 | ?rw-r--r--··6.1·unx····10048·bx·defN·25-Mar-18·08:46·OEBPS/unix_telnet.xhtml |
| 6 | ?rw-r--r--··6.1·unx······728·bx·defN·25-Mar-18·0 | 6 | ?rw-r--r--··6.1·unx······728·bx·defN·25-Mar-18·08:46·OEBPS/title.xhtml |
| 7 | ?rw-r--r--··6.1·unx·····6485·bx·defN·25-Mar-18·0 | 7 | ?rw-r--r--··6.1·unx·····6485·bx·defN·25-Mar-18·08:46·OEBPS/test_structure_chapter.xhtml |
| 8 | ?rw-r--r--··6.1·unx···172128·bx·defN·25-Mar-18·0 | 8 | ?rw-r--r--··6.1·unx···172128·bx·defN·25-Mar-18·08:46·OEBPS/run_test_chapter.xhtml |
| 9 | ?rw-r--r--··6.1·unx···202817·bx·defN·25-Mar-18·0 | 9 | ?rw-r--r--··6.1·unx···202817·bx·defN·25-Mar-18·08:46·OEBPS/notes.xhtml |
| 10 | ?rw-r--r--··6.1·unx·····3287·bx·defN·25-Mar-18·0 | 10 | ?rw-r--r--··6.1·unx·····3287·bx·defN·25-Mar-18·08:46·OEBPS/nav.xhtml |
| 11 | ?rw-r--r--··6.1·unx·····2798·bx·defN·25-Mar-18·0 | 11 | ?rw-r--r--··6.1·unx·····2798·bx·defN·25-Mar-18·08:46·OEBPS/introduction.xhtml |
| 12 | ?rw-r--r--··6.1·unx·····1925·bx·defN·25-Mar-18·0 | 12 | ?rw-r--r--··6.1·unx·····1925·bx·defN·25-Mar-18·08:46·OEBPS/install_chapter.xhtml |
| 13 | ?rw-r--r--··6.1·unx····20657·bx·defN·25-Mar-18·0 | 13 | ?rw-r--r--··6.1·unx····20657·bx·defN·25-Mar-18·08:46·OEBPS/getting_started_chapter.xhtml |
| 14 | ?rw-r--r--··6.1·unx····56479·bx·defN·25-Mar-18·0 | 14 | ?rw-r--r--··6.1·unx····56479·bx·defN·25-Mar-18·08:46·OEBPS/example_chapter.xhtml |
| 15 | ?rw-r--r--··6.1·unx····25326·bx·defN·25-Mar-18·0 | 15 | ?rw-r--r--··6.1·unx····25326·bx·defN·25-Mar-18·08:46·OEBPS/event_handler_chapter.xhtml |
| 16 | ?rw-r--r--··6.1·unx····14562·bx·defN·25-Mar-18·0 | 16 | ?rw-r--r--··6.1·unx····14562·bx·defN·25-Mar-18·08:46·OEBPS/dist/epub-erlang-ESPT6BQV.css |
| 17 | ?rw-r--r--··6.1·unx······499·bx·defN·25-Mar-18·0 | 17 | ?rw-r--r--··6.1·unx······499·bx·defN·25-Mar-18·08:46·OEBPS/dist/epub-LSJCIYTM.js |
| 18 | ?rw-r--r--··6.1·unx····36534·bx·defN·25-Mar-18·0 | 18 | ?rw-r--r--··6.1·unx····36534·bx·defN·25-Mar-18·08:46·OEBPS/dependencies_chapter.xhtml |
| 19 | ?rw-r--r--··6.1·unx·····4070·bx·defN·25-Mar-18·0 | 19 | ?rw-r--r--··6.1·unx·····4070·bx·defN·25-Mar-18·08:46·OEBPS/ct_testspec.xhtml |
| 20 | ?rw-r--r--··6.1·unx····63484·bx·defN·25-Mar-18·0 | 20 | ?rw-r--r--··6.1·unx····63484·bx·defN·25-Mar-18·08:46·OEBPS/ct_telnet.xhtml |
| 21 | ?rw-r--r--··6.1·unx····62171·bx·defN·25-Mar-18·0 | 21 | ?rw-r--r--··6.1·unx····62171·bx·defN·25-Mar-18·08:46·OEBPS/ct_suite.xhtml |
| 22 | ?rw-r--r--··6.1·unx···159584·bx·defN·25-Mar-18·0 | 22 | ?rw-r--r--··6.1·unx···159584·bx·defN·25-Mar-18·08:46·OEBPS/ct_ssh.xhtml |
| 23 | ?rw-r--r--··6.1·unx····67902·bx·defN·25-Mar-18·0 | 23 | ?rw-r--r--··6.1·unx····67902·bx·defN·25-Mar-18·08:46·OEBPS/ct_snmp.xhtml |
| 24 | ?rw-r--r--··6.1·unx····18764·bx·defN·25-Mar-18·0 | 24 | ?rw-r--r--··6.1·unx····18764·bx·defN·25-Mar-18·08:46·OEBPS/ct_slave.xhtml |
| 25 | ?rw-r--r--··6.1·unx····10667·bx·defN·25-Mar-18·0 | 25 | ?rw-r--r--··6.1·unx····10667·bx·defN·25-Mar-18·08:46·OEBPS/ct_run_cmd.xhtml |
| 26 | ?rw-r--r--··6.1·unx····20853·bx·defN·25-Mar-18·0 | 26 | ?rw-r--r--··6.1·unx····20853·bx·defN·25-Mar-18·08:46·OEBPS/ct_rpc.xhtml |
| 27 | ?rw-r--r--··6.1·unx····16244·bx·defN·25-Mar-18·0 | 27 | ?rw-r--r--··6.1·unx····16244·bx·defN·25-Mar-18·08:46·OEBPS/ct_property_test_chapter.xhtml |
| 28 | ?rw-r--r--··6.1·unx····43143·bx·defN·25-Mar-18·0 | 28 | ?rw-r--r--··6.1·unx····43143·bx·defN·25-Mar-18·08:46·OEBPS/ct_property_test.xhtml |
| 29 | ?rw-r--r--··6.1·unx···133642·bx·defN·25-Mar-18·0 | 29 | ?rw-r--r--··6.1·unx···133642·bx·defN·25-Mar-18·08:46·OEBPS/ct_netconfc.xhtml |
| 30 | ?rw-r--r--··6.1·unx····27158·bx·defN·25-Mar-18·0 | 30 | ?rw-r--r--··6.1·unx····27158·bx·defN·25-Mar-18·08:46·OEBPS/ct_master_chapter.xhtml |
| 31 | ?rw-r--r--··6.1·unx····29516·bx·defN·25-Mar-18·0 | 31 | ?rw-r--r--··6.1·unx····29516·bx·defN·25-Mar-18·08:46·OEBPS/ct_master.xhtml |
| 32 | ?rw-r--r--··6.1·unx····53918·bx·defN·25-Mar-18·0 | 32 | ?rw-r--r--··6.1·unx····53918·bx·defN·25-Mar-18·08:46·OEBPS/ct_hooks_chapter.xhtml |
| 33 | ?rw-r--r--··6.1·unx····71358·bx·defN·25-Mar-18·0 | 33 | ?rw-r--r--··6.1·unx····71358·bx·defN·25-Mar-18·08:46·OEBPS/ct_hooks.xhtml |
| 34 | ?rw-r--r--··6.1·unx····23974·bx·defN·25-Mar-18·0 | 34 | ?rw-r--r--··6.1·unx····23974·bx·defN·25-Mar-18·08:46·OEBPS/ct_ftp.xhtml |
| 35 | ?rw-r--r--··6.1·unx·····6486·bx·defN·25-Mar-18·0 | 35 | ?rw-r--r--··6.1·unx·····6486·bx·defN·25-Mar-18·08:46·OEBPS/ct_cover.xhtml |
| 36 | ?rw-r--r--··6.1·unx···176246·bx·defN·25-Mar-18·0 | 36 | ?rw-r--r--··6.1·unx···176246·bx·defN·25-Mar-18·08:46·OEBPS/ct.xhtml |
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| 20 | ····<h1·id="content"> | 20 | ····<h1·id="content"> |
| 21 | unix_telnet· | 21 | unix_telnet· |
| 22 | ····</h1> | 22 | ····</h1> |
| 23 | ······<section·id="moduledoc"·class="docstring"> | 23 | ······<section·id="moduledoc"·class="docstring"> |
| 24 | <p>Callback·module·for·<a·href="ct_telnet.xhtml"><code·class="inline">ct_telnet</code></a>,·for·connecting·to·a·Telnet·server·on·a·UNIX | 24 | <p>Callback·module·for·<a·href="ct_telnet.xhtml"><code·class="inline">ct_telnet</code></a>,·for·connecting·to·a·Telnet·server·on·a·UNIX |
| 25 | host.</p><p>It·requires·the·following·entry·in·the·configuration·file:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id=" | 25 | host.</p><p>It·requires·the·following·entry·in·the·configuration·file:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id="7446070693-1">{</samp><samp·class="ss">unix</samp><samp·class="p">,</samp><samp·class="p"·data-group-id="7446070693-2">[</samp><samp·class="p"·data-group-id="7446070693-3">{</samp><samp·class="ss">telnet</samp><samp·class="p">,</samp><samp·class="n">HostNa[·...·truncated·by·diffoscope;·len:·61,·SHA:·c1d39d7b65820beba7a48874466d1c9529764ab1a7304c66956ce827cc1337b6·...·]-3">}</samp><samp·class="p">,</samp><samp·class="w"> |
| 26 | ·······</samp><samp·class="p"·data-group-id=" | 26 | ·······</samp><samp·class="p"·data-group-id="7446070693-4">{</samp><samp·class="ss">port</samp><samp·class="p">,</samp><samp·class="n">PortNum</samp><samp·class="p"·data-group-id="7446070693-4">}</samp><samp·class="p">,</samp><samp·class="w">·················</samp><samp·class="c1">%·optional</samp><samp·class="w"> |
| 27 | ·······</samp><samp·class="p"·data-group-id=" | 27 | ·······</samp><samp·class="p"·data-group-id="7446070693-5">{</samp><samp·class="ss">username</samp><samp·class="p">,</samp><samp·class="n">UserName</samp><samp·class="p"·data-group-id="7446070693-5">}</samp><samp·class="p">,</samp><samp·class="w"> |
| 28 | ·······</samp><samp·class="p"·data-group-id=" | 28 | ·······</samp><samp·class="p"·data-group-id="7446070693-6">{</samp><samp·class="ss">password</samp><samp·class="p">,</samp><samp·class="n">Password</samp><samp·class="p"·data-group-id="7446070693-6">}</samp><samp·class="p">,</samp><samp·class="w"> |
| 29 | ·······</samp><samp·class="p"·data-group-id=" | 29 | ·······</samp><samp·class="p"·data-group-id="7446070693-7">{</samp><samp·class="ss">keep_alive</samp><samp·class="p">,</samp><samp·class="n">Bool</samp><samp·class="p"·data-group-id="7446070693-7">}</samp><samp·class="p"·data-group-id="7446070693-2">]</samp><samp·class="p"·data-group-id="7446070693-1">}</samp><samp·class="p">.</samp><samp·class="w">············</samp><samp·class="c1">%·optional</samp></code></pre><p>To·communicate·through·Telnet·to·the·host·specified·by·<code·class="inline">HostNameOrIpAddress</code>, |
| 30 | use·the·interface·functions·in·<a·href="ct_telnet.xhtml"><code·class="inline">ct_telnet</code></a>,·for·example,·<code·class="inline">open(Name)</code>·and | 30 | use·the·interface·functions·in·<a·href="ct_telnet.xhtml"><code·class="inline">ct_telnet</code></a>,·for·example,·<code·class="inline">open(Name)</code>·and |
| 31 | <code·class="inline">cmd(Name,Cmd)</code>.</p><p><code·class="inline">Name</code>·is·the·name·you·allocated·to·the·Unix·host·in·your·<code·class="inline">require</code>·statement, | 31 | <code·class="inline">cmd(Name,Cmd)</code>.</p><p><code·class="inline">Name</code>·is·the·name·you·allocated·to·the·Unix·host·in·your·<code·class="inline">require</code>·statement, |
| 32 | for·example:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nf">suite</samp><samp·class="p"·data-group-id="7 | 32 | for·example:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nf">suite</samp><samp·class="p"·data-group-id="7425150849-1">(</samp><samp·class="p"·data-group-id="7425150849-1">)</samp><samp·class="w">·</samp><samp·class="p">-></samp><samp·class="w">·</samp><samp·class="p"·data-group-id="7425150849-2">[</samp><samp·class="p"·data-group-id="7425150849-3">{</samp>[·...·truncated·by·diffoscope;·len:·1120,·SHA:·f07b90fbaa3b77efc296b63b2280b54c7ff6f38fdf57adc9052b94b2d8f9942d·...·]-1">)</samp><samp·class="p">.</samp></code></pre><p>The·"keep·alive"·activity·(that·is,·that·<code·class="inline">Common·Test</code>·sends·NOP·to·the·server |
| 33 | every·10·seconds·if·the·connection·is·idle)·can·be·enabled·or·disabled·for·one | 33 | every·10·seconds·if·the·connection·is·idle)·can·be·enabled·or·disabled·for·one |
| 34 | particular·connection·as·described·here.·It·can·be·disabled·for·all·connections | 34 | particular·connection·as·described·here.·It·can·be·disabled·for·all·connections |
| 35 | using·<code·class="inline">telnet_settings</code>·(see·<a·href="ct_telnet.xhtml"><code·class="inline">ct_telnet</code></a>).</p><p>The·<code·class="inline">{port,PortNum}</code>·tuple·is·optional·and·if·omitted,·default·Telnet·port·23·is | 35 | using·<code·class="inline">telnet_settings</code>·(see·<a·href="ct_telnet.xhtml"><code·class="inline">ct_telnet</code></a>).</p><p>The·<code·class="inline">{port,PortNum}</code>·tuple·is·optional·and·if·omitted,·default·Telnet·port·23·is |
| 36 | used.·Also·the·<code·class="inline">keep_alive</code>·tuple·is·optional,·and·the·value·default·to·<code·class="inline">true</code> | 36 | used.·Also·the·<code·class="inline">keep_alive</code>·tuple·is·optional,·and·the·value·default·to·<code·class="inline">true</code> |
| 37 | (enabled).</p><h2·id="module-see-also"·class="section-heading"> | 37 | (enabled).</p><h2·id="module-see-also"·class="section-heading"> |
| 38 | ··<a·href="#module-see-also"·class="hover-link"> | 38 | ··<a·href="#module-see-also"·class="hover-link"> |
| 39 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 39 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 59 | </h2> | 59 | </h2> |
| 60 | <p>Event·handlers·can·be·installed·by·an·<code·class="inline">event_handler</code>·start·flag | 60 | <p>Event·handlers·can·be·installed·by·an·<code·class="inline">event_handler</code>·start·flag |
| 61 | (<a·href="ct_run_cmd.xhtml"><code·class="inline">ct_run</code></a>)·or·option·<a·href="ct.xhtml#run_test/1"><code·class="inline">ct:run_test/1</code></a>,·where·the·argument | 61 | (<a·href="ct_run_cmd.xhtml"><code·class="inline">ct_run</code></a>)·or·option·<a·href="ct.xhtml#run_test/1"><code·class="inline">ct:run_test/1</code></a>,·where·the·argument |
| 62 | specifies·the·names·of·one·or·more·event·handler·modules.</p><p><em>Example:</em></p><p><code·class="inline">$·ct_run·-suite·test/my_SUITE·-event_handler·handlers/my_evh1·handlers/my_evh2·-pa·$PWD/handlers</code></p><p>To·pass·start·arguments·to·the·event·handler·init·function,·use·option | 62 | specifies·the·names·of·one·or·more·event·handler·modules.</p><p><em>Example:</em></p><p><code·class="inline">$·ct_run·-suite·test/my_SUITE·-event_handler·handlers/my_evh1·handlers/my_evh2·-pa·$PWD/handlers</code></p><p>To·pass·start·arguments·to·the·event·handler·init·function,·use·option |
| 63 | <code·class="inline">ct_run·-event_handler_init</code>·instead·of·<code·class="inline">-event_handler</code>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>All·event·handler·modules·must·have·<code·class="inline">gen_event</code>·behavior.·These·modules·must | 63 | <code·class="inline">ct_run·-event_handler_init</code>·instead·of·<code·class="inline">-event_handler</code>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>All·event·handler·modules·must·have·<code·class="inline">gen_event</code>·behavior.·These·modules·must |
| 64 | be·precompiled·and·their·locations·must·be·added·explicitly·to·the·Erlang·code | 64 | be·precompiled·and·their·locations·must·be·added·explicitly·to·the·Erlang·code |
| 65 | server·search·path·(as·in·the·previous·example).</p></section><p>An·event_handler·tuple·in·argument·<code·class="inline">Opts</code>·has·the·following·definition·(see | 65 | server·search·path·(as·in·the·previous·example).</p></section><p>An·event_handler·tuple·in·argument·<code·class="inline">Opts</code>·has·the·following·definition·(see |
| 66 | <a·href="ct.xhtml#run_test/1"><code·class="inline">ct:run_test/1</code></a>):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="3 | 66 | <a·href="ct.xhtml#run_test/1"><code·class="inline">ct:run_test/1</code></a>):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="3015006915-1">{</span><span·class="ss">event_handler</span><span·class="p">,</span><span·class="n">EventHandlers</span><span·class="p"·data-group-id="3015006915-1">}</span><span·class="w"> |
| 67 | </span><span·class="n">EventHandlers</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">EH</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="3 | 67 | </span><span·class="n">EventHandlers</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">EH</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="3015006915-2">[</span><span·class="n">EH</span><span·class="p"·data-group-id="3015006915-2">]</span><span·class="w"> |
| 68 | </span><span·class="n">EH</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="3313904874-3">(</span><span·class="p"·data-group-id="3313904874-3">)</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="3313904874-4">{</span><span·class="nf">atom</span><span·class="p"·data-group-id="3313904874-5">(</span><span·class="p"·data-group-id="3313904874-5">)</span><span·class="p">,</span><span·class="n">InitArgs</span><span·class="p"·data-group-id="3313904874-4">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="3313904874-6">{</span><span·class="p"·data-group-id="3313904874-7">[</span><span·class="nf">atom</span><span·class="p"·data-group-id="3313904874-8">(</span><span·class="p"·data-group-id="3313904874-8">)</span><span·class="p"·data-group-id="3313904874-7">]</span><span·class="p">,</span><span·class="n">InitArgs</span><span·class="p"·data-group-id="3313904874-6">}</span><span·class="w"> | ||
| 69 | </span><span·class="n">InitArgs</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="3313904874-9">[</span><span·class="nf">term</span><span·class="p"·data-group-id="3313904874-10">(</span><span·class="p"·data-group-id="3313904874-10">)</span><span·class="p"·data-group-id="3313904874-9">]</span></code></pre><p>In·the·following·example,·two·event·handlers·for·the·<code·class="inline">my_SUITE</code>·test·are | ||
| 70 | 68 | </span><span·class="n">EH</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="3015006915-3">(</span><span·class="p"·data-group-id="3015006915-3">)</span><span·class="w">·<[·...·truncated·by·diffoscope;·len:·838,·SHA:·4662b3b0b6cfa2a94eead14110e4f80a178dcb6624c277b4e8d1c0f0192ba423·...·] | |
| 69 | </span><span·class="n">InitArgs</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="3015006915-9">[</span><span·class="nf">term</span><span·class="p"·data-group-id="3015006915-10">(</span><span·class="p"·data-group-id="3015006915-10">)</span><span·class="p"·data-group-id="3015006915-9">]</span></code></pre><p>In·the·following·example,·two·event·handlers·for·the·<code·class="inline">my_SUITE</code>·test·are | ||
| 70 | installed:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">run_test</span><span·class="p"·data-group-id="4026720906-1">(</span><span·class="p"·data-group-id="4026720906-2">[</span><span·class="p"·data-group-id="4026720906-3">{</span><span·class="ss">suite</span><span·class="p">,</span><span·class="s">"test/my_SUITE"</span><span·class="p"·data-group-id="4026720906-3">}</span><span·class="p">,</span><span·class="p"·data-group-id="4026720906-4">{</span><span·class="ss">event_handler</span><span·class="p">,</span><span·class="p"·data-group-id="4026720906-5">[</span><span·class="ss">my_evh1</span><span·class="p">,</span><span·class="p"·data-group-id="4026720906-6">{</span><span·class="ss">my_evh2</span><span·class="p">,</span><span·class="p"·data-group-id="4026720906-7">[</span><span·class="nf">node</span><span·class="p"·data-group-id="4026720906-8">(</span><span·class="p"·data-group-id="4026720906-8">)</span><span·class="p"·data-group-id="4026720906-7">]</span><span·class="p"·data-group-id="4026720906-6">}</span><span·class="p"·data-group-id="4026720906-5">]</span><span·class="p"·data-group-id="4026720906-4">}</span><span·class="p"·data-group-id="4026720906-2">]</span><span·class="p"·data-group-id="4026720906-1">)</span><span·class="p">.</span></code></pre><p>Event·handler·<code·class="inline">my_evh1</code>·is·started·with·<code·class="inline">[]</code>·as·argument·to·the·init·function. | ||
| 71 | Event·handler·<code·class="inline">my_evh2</code>·is·started·with·the·name·of·the·current·node·in·the·init | 71 | Event·handler·<code·class="inline">my_evh2</code>·is·started·with·the·name·of·the·current·node·in·the·init |
| 72 | argument·list.</p><p>Event·handlers·can·also·be·plugged·in·using·one·of·the·following | 72 | argument·list.</p><p>Event·handlers·can·also·be·plugged·in·using·one·of·the·following |
| 73 | <a·href="run_test_chapter.xhtml#test_specifications">test·specification</a>·terms:</p><ul><li><code·class="inline">{event_handler,·EventHandlers}</code></li><li><code·class="inline">{event_handler,·EventHandlers,·InitArgs}</code></li><li><code·class="inline">{event_handler,·NodeRefs,·EventHandlers}</code></li><li><code·class="inline">{event_handler,·NodeRefs,·EventHandlers,·InitArgs}</code></li></ul><p><code·class="inline">EventHandlers</code>·is·a·list·of·module·names.·Before·a·test·session·starts,·the | 73 | <a·href="run_test_chapter.xhtml#test_specifications">test·specification</a>·terms:</p><ul><li><code·class="inline">{event_handler,·EventHandlers}</code></li><li><code·class="inline">{event_handler,·EventHandlers,·InitArgs}</code></li><li><code·class="inline">{event_handler,·NodeRefs,·EventHandlers}</code></li><li><code·class="inline">{event_handler,·NodeRefs,·EventHandlers,·InitArgs}</code></li></ul><p><code·class="inline">EventHandlers</code>·is·a·list·of·module·names.·Before·a·test·session·starts,·the |
| 74 | init·function·of·each·plugged·in·event·handler·is·called·(with·the·<code·class="inline">InitArgs</code> | 74 | init·function·of·each·plugged·in·event·handler·is·called·(with·the·<code·class="inline">InitArgs</code> |
| 75 | list·as·argument·or·<code·class="inline">[]</code>·if·no·start·arguments·are·specified).</p><p>To·plug·in·a·handler·to·the·<code·class="inline">Common·Test</code>·Master·event·manager,·specify·<code·class="inline">master</code> | 75 | list·as·argument·or·<code·class="inline">[]</code>·if·no·start·arguments·are·specified).</p><p>To·plug·in·a·handler·to·the·<code·class="inline">Common·Test</code>·Master·event·manager,·specify·<code·class="inline">master</code> |
| 76 | as·the·node·in·<code·class="inline">NodeRefs</code>.</p><p>To·be·able·to·match·on·events,·the·event·handler·module·must·include·the·header | 76 | as·the·node·in·<code·class="inline">NodeRefs</code>.</p><p>To·be·able·to·match·on·events,·the·event·handler·module·must·include·the·header |
| 77 | file·<code·class="inline">ct_event.hrl</code>.·An·event·is·a·record·with·the·following·definition:</p><p><code·class="inline">#event{name,·node,·data}</code></p><ul><li><p><strong><code·class="inline">name</code></strong>·-·Label·(type)·of·the·event.</p></li><li><p><strong><code·class="inline">node</code></strong>·-·Name·of·the·node·that·the·event·originated·from·(only·relevant | 77 | file·<code·class="inline">ct_event.hrl</code>.·An·event·is·a·record·with·the·following·definition:</p><p><code·class="inline">#event{name,·node,·data}</code></p><ul><li><p><strong><code·class="inline">name</code></strong>·-·Label·(type)·of·the·event.</p></li><li><p><strong><code·class="inline">node</code></strong>·-·Name·of·the·node·that·the·event·originated·from·(only·relevant |
| Offset 24, 22 lines modified | Offset 24, 22 lines modified | ||
| 24 | ······<section·id="moduledoc"·class="docstring"> | 24 | ······<section·id="moduledoc"·class="docstring"> |
| 25 | <p>SSH/SFTP·client·module.</p><p>This·module·uses·application·<code·class="inline">SSH</code>,·which·provides·detailed·information·about, | 25 | <p>SSH/SFTP·client·module.</p><p>This·module·uses·application·<code·class="inline">SSH</code>,·which·provides·detailed·information·about, |
| 26 | for·example,·functions,·types,·and·options.</p><p>Argument·<code·class="inline">Server</code>·in·the·SFTP·functions·is·only·to·be·used·for·SFTP·sessions | 26 | for·example,·functions,·types,·and·options.</p><p>Argument·<code·class="inline">Server</code>·in·the·SFTP·functions·is·only·to·be·used·for·SFTP·sessions |
| 27 | that·have·been·started·on·existing·SSH·connections·(that·is,·when·the·original | 27 | that·have·been·started·on·existing·SSH·connections·(that·is,·when·the·original |
| 28 | connection·type·is·<code·class="inline">ssh</code>).·Whenever·the·connection·type·is·<code·class="inline">sftp</code>,·use·the·SSH | 28 | connection·type·is·<code·class="inline">ssh</code>).·Whenever·the·connection·type·is·<code·class="inline">sftp</code>,·use·the·SSH |
| 29 | connection·reference·only.</p><p>The·following·options·are·valid·for·specifying·an·SSH/SFTP·connection·(that·is, | 29 | connection·reference·only.</p><p>The·following·options·are·valid·for·specifying·an·SSH/SFTP·connection·(that·is, |
| 30 | can·be·used·as·configuration·elements):</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id=" | 30 | can·be·used·as·configuration·elements):</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id="6282239360-1">[</samp><samp·class="p"·data-group-id="6282239360-2">{</samp><samp·class="n">ConnType</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Addr</samp><samp·class="p"·data-group-id="6282239360-2">}</samp><samp·class="p">,</samp><samp·class="w"> |
| 31 | ·</samp><samp·class="p"·data-group-id=" | 31 | ·</samp><samp·class="p"·data-group-id="6282239360-3">{</samp><samp·class="ss">port</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Port</samp><samp·class="p"·data-group-id="6282239360-3">}</samp><samp·class="p">,</samp><samp·class="w"> |
| 32 | ·</samp><samp·class="p"·data-group-id=" | 32 | ·</samp><samp·class="p"·data-group-id="6282239360-4">{</samp><samp·class="ss">user</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">UserName</samp><samp·class="p"·data-group-id="6282239360-4">}</samp><samp·class="w"> |
| 33 | ·</samp><samp·class="p"·data-group-id=" | 33 | ·</samp><samp·class="p"·data-group-id="6282239360-5">{</samp><samp·class="ss">password</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Pwd</samp><samp·class="p"·data-group-id="6282239360-5">}</samp><samp·class="w"> |
| 34 | ·</samp><samp·class="p"·data-group-id=" | 34 | ·</samp><samp·class="p"·data-group-id="6282239360-6">{</samp><samp·class="ss">user_dir</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">String</samp><samp·class="p"·data-group-id="6282239360-6">}</samp><samp·class="w"> |
| 35 | ·</samp><samp·class="p"·data-group-id=" | 35 | ·</samp><samp·class="p"·data-group-id="6282239360-7">{</samp><samp·class="ss">public_key_alg</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">PubKeyAlg</samp><samp·class="p"·data-group-id="6282239360-7">}</samp><samp·class="w"> |
| 36 | ·</samp><samp·class="p"·data-group-id=" | 36 | ·</samp><samp·class="p"·data-group-id="6282239360-8">{</samp><samp·class="ss">connect_timeout</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Timeout</samp><samp·class="p"·data-group-id="6282239360-8">}</samp><samp·class="w"> |
| 37 | ·</samp><samp·class="p"·data-group-id=" | 37 | ·</samp><samp·class="p"·data-group-id="6282239360-9">{</samp><samp·class="ss">key_cb</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">KeyCallbackMod</samp><samp·class="p"·data-group-id="6282239360-9">}</samp><samp·class="p"·data-group-id="6282239360-1">]</samp></code></pre><p><code·class="inline">ConnType·=·ssh·|·sftp</code>.</p><p>For·other·types,·see·<a·href="../../../../lib/ssh/doc/html/ssh.html"><code·class="inline">ssh</code></a>.</p><p>All·time-out·parameters·in·<code·class="inline">ct_ssh</code>·functions·are·values·in·milliseconds.</p> |
| 38 | ······</section> | 38 | ······</section> |
| 39 | ······<section·id="summary"·class="details-list"> | 39 | ······<section·id="summary"·class="details-list"> |
| 40 | ········<h1·class="section-heading">Summary</h1> | 40 | ········<h1·class="section-heading">Summary</h1> |
| 41 | <div·class="summary-types·summary"> | 41 | <div·class="summary-types·summary"> |
| 42 | ··<h2> | 42 | ··<h2> |
| Offset 41, 23 lines modified | Offset 41, 23 lines modified | ||
| 41 | configuration·files·have·default·values·set·by·the·<code·class="inline">SNMP</code>·application.·These | 41 | configuration·files·have·default·values·set·by·the·<code·class="inline">SNMP</code>·application.·These |
| 42 | values·can·be·overridden·by·suppling·a·list·of·valid·configuration·values·or·a | 42 | values·can·be·overridden·by·suppling·a·list·of·valid·configuration·values·or·a |
| 43 | file·located·in·the·test·suites·data·directory,·which·can·produce·a·list·of | 43 | file·located·in·the·test·suites·data·directory,·which·can·produce·a·list·of |
| 44 | valid·configuration·values·if·you·apply·function·<a·href="../../../../lib/kernel/doc/html/file.html#consult/1"><code·class="inline">file:consult/1</code></a>·to·the·file.</p><ul><li><p><strong><code·class="inline">{agent_contexts,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·-·Optional.</p></li><li><p><strong><code·class="inline">{agent_community,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·-·Optional.</p></li><li><p><strong><code·class="inline">{agent_sysinfo,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·-·Optional.</p></li><li><p><strong><code·class="inline">{agent_vacm,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·-·Optional.</p></li><li><p><strong><code·class="inline">{agent_usm,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·-·Optional.</p></li><li><p><strong><code·class="inline">{agent_notify_def,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·-·Optional.</p></li><li><p><strong><code·class="inline">{agent_target_address_def,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·- | 44 | valid·configuration·values·if·you·apply·function·<a·href="../../../../lib/kernel/doc/html/file.html#consult/1"><code·class="inline">file:consult/1</code></a>·to·the·file.</p><ul><li><p><strong><code·class="inline">{agent_contexts,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·-·Optional.</p></li><li><p><strong><code·class="inline">{agent_community,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·-·Optional.</p></li><li><p><strong><code·class="inline">{agent_sysinfo,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·-·Optional.</p></li><li><p><strong><code·class="inline">{agent_vacm,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·-·Optional.</p></li><li><p><strong><code·class="inline">{agent_usm,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·-·Optional.</p></li><li><p><strong><code·class="inline">{agent_notify_def,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·-·Optional.</p></li><li><p><strong><code·class="inline">{agent_target_address_def,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·- |
| 45 | Optional.</p></li><li><p><strong><code·class="inline">{agent_target_param_def,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·- | 45 | Optional.</p></li><li><p><strong><code·class="inline">{agent_target_param_def,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·- |
| 46 | Optional.</p></li></ul><p>Parameter·<code·class="inline">MgrAgentConfName</code>·in·the·functions·is·to·be·a·name·you·allocate·in | 46 | Optional.</p></li></ul><p>Parameter·<code·class="inline">MgrAgentConfName</code>·in·the·functions·is·to·be·a·name·you·allocate·in |
| 47 | your·test·suite·using·a·<code·class="inline">require</code>·statement.·Example·(where | 47 | your·test·suite·using·a·<code·class="inline">require</code>·statement.·Example·(where |
| 48 | <code·class="inline">MgrAgentConfName·=·snmp_mgr_agent</code>):</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nf">suite</samp><samp·class="p"·data-group-id="02 | 48 | <code·class="inline">MgrAgentConfName·=·snmp_mgr_agent</code>):</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nf">suite</samp><samp·class="p"·data-group-id="3990247767-1">(</samp><samp·class="p"·data-group-id="3990247767-1">)</samp><samp·class="w">·</samp><samp·class="p">-></samp><samp·class="w">·</samp><samp·class="p"·data-group-id="3990247767-2">[</samp><samp·class="p"·data-group-id="3990247767-3">{</samp[·...·truncated·by·diffoscope;·len:·683,·SHA:·02a8dc1066c5a87e5101540110d83e31f28b034b6d07f519d093e444cfce4375·...·]-1">)</samp><samp·class="p">.</samp></code></pre><p>Notice·that·USM·users·are·needed·for·SNMPv3·configuration·and·are·not·to·be |
| 49 | confused·with·users.</p><p>SNMP·traps,·inform,·and·report·messages·are·handled·by·the·user·callback·module. | 49 | confused·with·users.</p><p>SNMP·traps,·inform,·and·report·messages·are·handled·by·the·user·callback·module. |
| 50 | For·details,·see·the·<a·href="../../../../lib/snmp/doc/html/index.html"><code·class="inline">SNMP</code></a>·application.</p><p>It·is·recommended·to·use·the·<code·class="inline">.hrl</code>·files·created·by·the·Erlang/OTP·MIB·compiler | 50 | For·details,·see·the·<a·href="../../../../lib/snmp/doc/html/index.html"><code·class="inline">SNMP</code></a>·application.</p><p>It·is·recommended·to·use·the·<code·class="inline">.hrl</code>·files·created·by·the·Erlang/OTP·MIB·compiler |
| 51 | to·define·the·Object·Identifiers·(OIDs).·For·example,·to·get·the·Erlang·node | 51 | to·define·the·Object·Identifiers·(OIDs).·For·example,·to·get·the·Erlang·node |
| 52 | name·from·<code·class="inline">erlNodeTable</code>·in·the·OTP-MIB:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="n">Oid</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="o">?</samp><samp·class="ss">erlNodeEntry</samp><samp·class="w">·</samp><samp·class="o">++</samp><samp·class="w">·</samp><samp·class="p"·data-group-id="9 | 52 | name·from·<code·class="inline">erlNodeTable</code>·in·the·OTP-MIB:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="n">Oid</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="o">?</samp><samp·class="ss">erlNodeEntry</samp><samp·class="w">·</samp><samp·class="o">++</samp><samp·class="w">·</samp><samp·class="p"·data-group-id="9463061492-1">[</samp><samp·class="o">?</samp><samp·class="ss">erlNodeName</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="mi">1</samp><samp·class="p"·data-group-id="9463061492-1">]</samp></code></pre><p>Furthermore,·values·can·be·set·for·<code·class="inline">SNMP</code>·application·configuration·parameters, |
| 53 | <code·class="inline">config</code>,·<code·class="inline">server</code>,·<code·class="inline">net_if</code>,·and·so·on·(for·a·list·of·valid·parameters·and | 53 | <code·class="inline">config</code>,·<code·class="inline">server</code>,·<code·class="inline">net_if</code>,·and·so·on·(for·a·list·of·valid·parameters·and |
| 54 | types,·see·the·<a·href="../../../../lib/snmp/doc/html/index.html"><code·class="inline">User's·Guide·for·the·SNMP·application</code></a>). | 54 | types,·see·the·<a·href="../../../../lib/snmp/doc/html/index.html"><code·class="inline">User's·Guide·for·the·SNMP·application</code></a>). |
| 55 | This·is·done·by·defining·a·configuration·data·variable·on·the·following·form:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id="3855528046-1">{</samp><samp·class="ss">snmp_app</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="p"·data-group-id="3855528046-2">[</samp><samp·class="p"·data-group-id="3855528046-3">{</samp><samp·class="ss">manager</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="p"·data-group-id="3855528046-4">[</samp><samp·class="nf">snmp_app_manager_params</samp><samp·class="p"·data-group-id="3855528046-5">(</samp><samp·class="p"·data-group-id="3855528046-5">)</samp><samp·class="p"·data-group-id="3855528046-4">]</samp><samp·class="p"·data-group-id="3855528046-3">}</samp><samp·class="p">,</samp><samp·class="w"> | ||
| 56 | 55 | This·is·done·by·defining·a·configuration·data·variable·on·the·following·form:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id="6693467020-1">{</samp><samp·class="ss">snmp_app</samp><samp·class="p">,</samp><samp·class="w">·<[·...·truncated·by·diffoscope;·len:·543,·SHA:·b715be8f4c045e929665628402f25d431990206a380bb067ab51c24ab1d3cbe5·...·] | |
| 56 | ············</samp><samp·class="p"·data-group-id="6693467020-6">{</samp><samp·class="ss">agent</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="p"·data-group-id="6693467020-7">[</samp><samp·class="nf">snmp_app_agent_params</samp><samp·class="p"·data-group-id="6693467020-8">(</samp><samp·class="p"·data-group-id="6693467020-8">)</samp><samp·class="p"·data-group-id="6693467020-7">]</samp><samp·class="p"·data-group-id="6693467020-6">}</samp><samp·class="p"·data-group-id="6693467020-2">]</samp><samp·class="p"·data-group-id="6693467020-1">}</samp><samp·class="p">.</samp></code></pre><p>A·name·for·the·data·must·be·allocated·in·the·suite·using·<code·class="inline">require</code>·(see·the | ||
| 57 | example·above).·Pass·this·name·as·argument·<code·class="inline">SnmpAppConfName</code>·to | 57 | example·above).·Pass·this·name·as·argument·<code·class="inline">SnmpAppConfName</code>·to |
| 58 | <a·href="#start/3"><code·class="inline">ct_snmp:start/3</code></a>.·<code·class="inline">ct_snmp</code>·specifies·default·values·for·some | 58 | <a·href="#start/3"><code·class="inline">ct_snmp:start/3</code></a>.·<code·class="inline">ct_snmp</code>·specifies·default·values·for·some |
| 59 | <code·class="inline">SNMP</code>·application·configuration·parameters·(such·as·<code·class="inline">{verbosity,trace}</code>·for | 59 | <code·class="inline">SNMP</code>·application·configuration·parameters·(such·as·<code·class="inline">{verbosity,trace}</code>·for |
| 60 | parameter·<code·class="inline">config</code>).·This·set·of·defaults·is·merged·with·the·parameters | 60 | parameter·<code·class="inline">config</code>).·This·set·of·defaults·is·merged·with·the·parameters |
| 61 | specified·by·the·user.·The·user·values·override·<code·class="inline">ct_snmp</code>·defaults.</p> | 61 | specified·by·the·user.·The·user·values·override·<code·class="inline">ct_snmp</code>·defaults.</p> |
| 62 | ······</section> | 62 | ······</section> |
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| 142 | ··[-keep_logs·all·|·NLogs]</code></pre><h2·id="run-common-test-in-interactive-mode"·class="section-heading"> | 142 | ··[-keep_logs·all·|·NLogs]</code></pre><h2·id="run-common-test-in-interactive-mode"·class="section-heading"> |
| 143 | ··<a·href="#run-common-test-in-interactive-mode"·class="hover-link"> | 143 | ··<a·href="#run-common-test-in-interactive-mode"·class="hover-link"> |
| 144 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 144 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 145 | ··</a> | 145 | ··</a> |
| 146 | ··<span·class="text">Run·Common·Test·in·Interactive·Mode</span> | 146 | ··<span·class="text">Run·Common·Test·in·Interactive·Mode</span> |
| 147 | </h2> | 147 | </h2> |
| 148 | <pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="ss">ct_run</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">shell</span><span·class="w"> | 148 | <pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="ss">ct_run</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">shell</span><span·class="w"> |
| 149 | ··</span><span·class="p"·data-group-id=" | 149 | ··</span><span·class="p"·data-group-id="5459534969-1">[</span><span·class="o">-</span><span·class="ss">config</span><span·class="w">·</span><span·class="n">ConfigFile1</span><span·class="w">·</span><span·class="n">ConfigFile2</span><span·class="w">·</span><span·class="p">.</span><span·class="p">[·...·truncated·by·diffoscope;·len:·131,·SHA:·acb10f88c0c213b4e49e65cae780593e0181af41b848707c7a451da483abc831·...·]-1">]</span><span·class="w"> |
| 150 | ··</span><span·class="p"·data-group-id=" | 150 | ··</span><span·class="p"·data-group-id="5459534969-2">[</span><span·class="o">-</span><span·class="ss">userconfig</span><span·class="w">·</span><span·class="n">CallbackModule1</span><span·class="w">·</span><span·class="n">ConfigString1</span><span·class="w">·</span><span·class="ow">and</span><span·class="w">·</span><span·class="n">CallbackModule2</span><span·class="w"> |
| 151 | ···</span><span·class="n">ConfigString2</span><span·class="w">·</span><span·class="ow">and</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="ow">and</span><span·class="w">·</span><span·class="n">CallbackModuleN</span><span·class="w">·</span><span·class="n">ConfigStringN</span><span·class="p"·data-group-id=" | 151 | ···</span><span·class="n">ConfigString2</span><span·class="w">·</span><span·class="ow">and</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="ow">and</span><span·class="w">·</span><span·class="n">CallbackModuleN</span><span·class="w">·</span><span·class="n">ConfigStringN</span><span·class="p"·data-group-id="5459534969-2">]</span><span·class="w"> |
| 152 | ··</span><span·class="p"·data-group-id=" | 152 | ··</span><span·class="p"·data-group-id="5459534969-3">[</span><span·class="o">-</span><span·class="ss">decrypt_key</span><span·class="w">·</span><span·class="n">Key</span><span·class="p"·data-group-id="5459534969-3">]</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span>[·...·truncated·by·diffoscope;·len:·208,·SHA:·713e967a7387729045508cc5bb3e810e13c676b4cc41e1d3aa58b0e346dac54d·...·]-4">]</span></code></pre><h2·id="start-a-common-test-master-node"·class="section-heading"> |
| 153 | ··<a·href="#start-a-common-test-master-node"·class="hover-link"> | 153 | ··<a·href="#start-a-common-test-master-node"·class="hover-link"> |
| 154 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 154 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 155 | ··</a> | 155 | ··</a> |
| 156 | ··<span·class="text">Start·a·Common·Test·Master·Node</span> | 156 | ··<span·class="text">Start·a·Common·Test·Master·Node</span> |
| 157 | </h2> | 157 | </h2> |
| 158 | <pre><code·class="text">·ct_run·-ctmaster</code></pre><h2·id="see-also"·class="section-heading"> | 158 | <pre><code·class="text">·ct_run·-ctmaster</code></pre><h2·id="see-also"·class="section-heading"> |
| 159 | ··<a·href="#see-also"·class="hover-link"> | 159 | ··<a·href="#see-also"·class="hover-link"> |
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| 313 | ······<div·class="specs"> | 313 | ······<div·class="specs"> |
| 314 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·get_event_mgr_ref()·->·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:atom/0">atom</a>().</pre> | 314 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·get_event_mgr_ref()·->·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:atom/0">atom</a>().</pre> |
| 315 | ······</div> | 315 | ······</div> |
| 316 | <p>Gets·a·reference·to·the·<code·class="inline">Common·Test</code>·master·event·manager.·The·reference·can·be | 316 | <p>Gets·a·reference·to·the·<code·class="inline">Common·Test</code>·master·event·manager.·The·reference·can·be |
| 317 | used·to,·for·example,·add·a·user-specific·event·handler·while·tests·are·running.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nc">gen_event</samp><samp·class="p">:</samp><samp·class="nf">add_handler</samp><samp·class="p"·data-group-id=" | 317 | used·to,·for·example,·add·a·user-specific·event·handler·while·tests·are·running.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nc">gen_event</samp><samp·class="p">:</samp><samp·class="nf">add_handler</samp><samp·class="p"·data-group-id="0522498685-1">(</samp><samp·class="nc">ct_master</samp><samp·class="p">:</samp><samp·class="nf">get_event_mgr_ref</samp><samp·class="p"·data-group-id="0522498685-2">(</samp><samp·class="p"·data-group-id="0522498685-2">)</samp><samp·class="p">,</samp><samp·[·...·truncated·by·diffoscope;·len:·244,·SHA:·dece1b0058ce4ad48d6d07e357678d23b9e0bc124f92181a85f147b9ed446beb·...·]-1">)</samp></code></pre> |
| 318 | ··</section> | 318 | ··</section> |
| 319 | </section> | 319 | </section> |
| 320 | <section·class="detail"·id="progress/0"> | 320 | <section·class="detail"·id="progress/0"> |
| 321 | ··<div·class="detail-header"> | 321 | ··<div·class="detail-header"> |
| 322 | ····<a·href="#progress/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 322 | ····<a·href="#progress/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 323 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 323 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 446 | ·················LocalFile·::·<a·href="../../../../lib/kernel/doc/html/file.html#t:filename/0">file:filename</a>(), | 446 | ·················LocalFile·::·<a·href="../../../../lib/kernel/doc/html/file.html#t:filename/0">file:filename</a>(), |
| 447 | ·················RemoteFile·::·<a·href="../../../../lib/kernel/doc/html/file.html#t:filename/0">file:filename</a>(), | 447 | ·················RemoteFile·::·<a·href="../../../../lib/kernel/doc/html/file.html#t:filename/0">file:filename</a>(), |
| 448 | ·················Reason·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:term/0">term</a>().</pre> | 448 | ·················Reason·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 449 | ······</div> | 449 | ······</div> |
| 450 | <p>Opens·an·FTP·connection·and·sends·a·file·to·the·remote·host.</p><p><code·class="inline">LocalFile</code>·and·<code·class="inline">RemoteFile</code>·must·be·absolute·paths.</p><p>If·the·target·host·is·a·"special"·node,·the·FTP·address·must·be·specified·in·the | 450 | <p>Opens·an·FTP·connection·and·sends·a·file·to·the·remote·host.</p><p><code·class="inline">LocalFile</code>·and·<code·class="inline">RemoteFile</code>·must·be·absolute·paths.</p><p>If·the·target·host·is·a·"special"·node,·the·FTP·address·must·be·specified·in·the |
| 451 | configuration·file·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id="4044619767-1">{</samp><samp·class="nb">node</samp><samp·class="p">,</samp><samp·class="p"·data-group-id="4044619767-2">[</samp><samp·class="p"·data-group-id="4044619767-3">{</samp><samp·class="ss">ftp</samp><samp·class="p">,</samp><samp·class="n">IpAddr</samp><samp·class="p"·data-group-id="4044619767-3">}</samp><samp·class="p"·data-group-id="4044619767-2">]</samp><samp·class="p"·data-group-id="4044619767-1">}</samp><samp·class="p">.</samp></code></pre><p>If·the·target·host·is·something·else,·for·example,·a·UNIX·host,·the | ||
| 452 | configuration·file· | 451 | configuration·file·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id="1682064487-1">{</samp><samp·class="nb">node</samp><samp·class="p">,</samp><samp·class="p"·data-group-id="1682064487-2">[</samp><samp·class="p"·data-group-id="1682[·...·truncated·by·diffoscope;·len:·364,·SHA:·304c87a0ccc15e1484169fee0f2a72608999fc5720318be9cc506e7d7c8914a8·...·] |
| 452 | configuration·file·must·also·include·the·username·and·password·(both·strings):</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id="2630770473-1">{</samp><samp·class="ss">unix</samp><samp·class="p">,</samp><samp·class="p"·data-group-id="2630770473-2">[</samp><samp·class="p"·data-group-id="2630770473-3">{</samp><samp·class="ss">ftp</samp><samp·class="p">,</samp><samp·class="n">IpAddr</samp><samp·class="p"·data-group-id="2630770473-3">}</samp><samp·class="p">,</samp><samp·class="w"> | ||
| 453 | ·······</samp><samp·class="p"·data-group-id="2 | 453 | ·······</samp><samp·class="p"·data-group-id="2630770473-4">{</samp><samp·class="ss">username</samp><samp·class="p">,</samp><samp·class="n">Username</samp><samp·class="p"·data-group-id="2630770473-4">}</samp><samp·class="p">,</samp><samp·class="w"> |
| 454 | ·······</samp><samp·class="p"·data-group-id="2 | 454 | ·······</samp><samp·class="p"·data-group-id="2630770473-5">{</samp><samp·class="ss">password</samp><samp·class="p">,</samp><samp·class="n">Password</samp><samp·class="p"·data-group-id="2630770473-5">}</samp><samp·class="p"·data-group-id="2630770473-2">]</samp><samp·class="p"·data-group-id="2630770473-1">}</samp><samp·class="p">.</samp></code></pre><p>See·also·<a·href="ct.xhtml#require/2"><code·class="inline">ct:require/2</code></a>.</p> |
| 455 | ··</section> | 455 | ··</section> |
| 456 | </section> | 456 | </section> |
| 457 | <section·class="detail"·id="recv/2"> | 457 | <section·class="detail"·id="recv/2"> |
| 458 | ··<div·class="detail-header"> | 458 | ··<div·class="detail-header"> |
| 459 | ····<a·href="#recv/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 459 | ····<a·href="#recv/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 460 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 460 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 106 | <a·href="write_test_chapter.xhtml#intro">Writing·Test·Suites</a>.</p><p>A·test·case·is·considered·successful·if·it·returns·to·the·caller,·no·matter·what | 106 | <a·href="write_test_chapter.xhtml#intro">Writing·Test·Suites</a>.</p><p>A·test·case·is·considered·successful·if·it·returns·to·the·caller,·no·matter·what |
| 107 | the·returned·value·is.·However,·a·few·return·values·have·special·meaning·as | 107 | the·returned·value·is.·However,·a·few·return·values·have·special·meaning·as |
| 108 | follows:</p><ul><li><code·class="inline">{skip,Reason}</code>·indicates·that·the·test·case·is·skipped.</li><li><code·class="inline">{comment,Comment}</code>·prints·a·comment·in·the·log·for·the·test·case.</li><li><code·class="inline">{save_config,Config}</code>·makes·the·<code·class="inline">Common·Test</code>·test·server·pass·<code·class="inline">Config</code>·to | 108 | follows:</p><ul><li><code·class="inline">{skip,Reason}</code>·indicates·that·the·test·case·is·skipped.</li><li><code·class="inline">{comment,Comment}</code>·prints·a·comment·in·the·log·for·the·test·case.</li><li><code·class="inline">{save_config,Config}</code>·makes·the·<code·class="inline">Common·Test</code>·test·server·pass·<code·class="inline">Config</code>·to |
| 109 | the·next·test·case.</li></ul><p>A·test·case·failure·is·specified·as·a·runtime·error·(a·crash),·no·matter·what | 109 | the·next·test·case.</li></ul><p>A·test·case·failure·is·specified·as·a·runtime·error·(a·crash),·no·matter·what |
| 110 | the·reason·for·termination·is.·If·you·use·Erlang·pattern·matching·effectively, | 110 | the·reason·for·termination·is.·If·you·use·Erlang·pattern·matching·effectively, |
| 111 | you·can·take·advantage·of·this·property.·The·result·is·concise·and·readable·test | 111 | you·can·take·advantage·of·this·property.·The·result·is·concise·and·readable·test |
| 112 | case·functions·that·look·much·more·like·scripts·than·actual·programs.·A·simple | 112 | case·functions·that·look·much·more·like·scripts·than·actual·programs.·A·simple |
| 113 | example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">session</span><span·class="p"·data-group-id=" | 113 | example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">session</span><span·class="p"·data-group-id="4029445824-1">(</span><span·class="p">_</span><span·class="n">Config</span><span·class="p"·data-group-id="4029445824-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 114 | ····</span><span·class="p"·data-group-id=" | 114 | ····</span><span·class="p"·data-group-id="4029445824-2">{</span><span·class="ss">started</span><span·class="p">,</span><span·class="n">ServerId</span><span·class="p"·data-group-id="4029445824-2">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">my_ser[·...·truncated·by·diffoscope;·len:·157,·SHA:·c7bf40fd222c37ea6bba943edcdede9c6f5a94d7faf9e3809f2e6d56fd77d8ef·...·]-3">)</span><span·class="p">,</span><span·class="w"> |
| 115 | ····</span><span·class="p"·data-group-id=" | 115 | ····</span><span·class="p"·data-group-id="4029445824-4">{</span><span·class="ss">clients</span><span·class="p">,</span><span·class="p"·data-group-id="4029445824-5">[</span><span·class="p"·data-group-id="4029445824-5">]</span><span·class="p"·data-group-id="4029445824-4">}</span><span·class="w">·</s[·...·truncated·by·diffoscope;·len:·269,·SHA:·9b79a1949f26e316a38ba5b70d54c587ffdbc05397927034b7701bc2e674f056·...·]-6">)</span><span·class="p">,</span><span·class="w"> |
| 116 | ····</span><span·class="n">MyId</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id=" | 116 | ····</span><span·class="n">MyId</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="4029445824-7">(</span><span·class="p"·data-group-id="4029445824-7">)</span><span·class="p">,</span><span·class="w"> |
| 117 | ····</span><span·class="ss">connected</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">my_server</span><span·class="p">:</span><span·class="nf">connect</span><span·class="p"·data-group-id=" | 117 | ····</span><span·class="ss">connected</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">my_server</span><span·class="p">:</span><span·class="nf">connect</span><span·class="p"·data-group-id="4029445824-8">(</span><span·class="n">ServerId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">MyId</span><span·class="p"·data-group-id="4029445824-8">)</span><span·class="p">,</span><span·class="w"> |
| 118 | ····</span><span·class="p"·data-group-id=" | 118 | ····</span><span·class="p"·data-group-id="4029445824-9">{</span><span·class="ss">clients</span><span·class="p">,</span><span·class="p"·data-group-id="4029445824-10">[</span><span·class="n">MyId</span><span·class="p"·data-group-id="4029445824-10">]</span><span·class="p"·data-group-id="4029445824-9"[·...·truncated·by·diffoscope;·len:·299,·SHA:·74d7d227e043ad621679ef1d6cf8d218e31851c6ee4432a9585f86a15e3b4531·...·]-11">)</span><span·class="p">,</span><span·class="w"> |
| 119 | ····</span><span·class="ss">disconnected</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">my_server</span><span·class="p">:</span><span·class="nf">disconnect</span><span·class="p"·data-group-id=" | 119 | ····</span><span·class="ss">disconnected</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">my_server</span><span·class="p">:</span><span·class="nf">disconnect</span><span·class="p"·data-group-id="4029445824-12">(</span><span·class="n">ServerId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">MyId</span><span·class="p"·data-group-id="4029445824-12">)</span><span·class="p">,</span><span·class="w"> |
| 120 | ····</span><span·class="p"·data-group-id=" | 120 | ····</span><span·class="p"·data-group-id="4029445824-13">{</span><span·class="ss">clients</span><span·class="p">,</span><span·class="p"·data-group-id="4029445824-14">[</span><span·class="p"·data-group-id="4029445824-14">]</span><span·class="p"·data-group-id="4029445824-13">}</span><span·class="w">[·...·truncated·by·diffoscope;·len:·274,·SHA:·380a5b63a84eff939a7d510f18dc58c1ddd361ebb3bb20399d21143b8931b5e0·...·]-15">)</span><span·class="p">,</span><span·class="w"> |
| 121 | ····</span><span·class="ss">stopped</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">my_server</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id=" | 121 | ····</span><span·class="ss">stopped</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">my_server</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id="4029445824-16">(</span><span·class="n">ServerId</span><span·class="p"·data-group-id="4029445824-16">)</span><span·class="p">.</span></code></pre><p>As·a·test·suite·runs,·all·information·(including·output·to·<code·class="inline">stdout</code>)·is·recorded |
| 122 | in·many·different·log·files.·A·minimum·of·information·is·displayed·in·the·user | 122 | in·many·different·log·files.·A·minimum·of·information·is·displayed·in·the·user |
| 123 | console·(only·start·and·stop·information,·plus·a·note·for·each·failed·test | 123 | console·(only·start·and·stop·information,·plus·a·note·for·each·failed·test |
| 124 | case).</p><p>The·result·from·each·test·case·is·recorded·in·a·dedicated·HTML·log·file,·created | 124 | case).</p><p>The·result·from·each·test·case·is·recorded·in·a·dedicated·HTML·log·file,·created |
| 125 | for·the·particular·test·run.·An·overview·page·displays·each·test·case | 125 | for·the·particular·test·run.·An·overview·page·displays·each·test·case |
| 126 | represented·by·a·table·row·showing·total·execution·time,·if·the·case·was | 126 | represented·by·a·table·row·showing·total·execution·time,·if·the·case·was |
| 127 | successful,·failed,·or·skipped,·plus·an·optional·user·comment.·For·a·failed·test | 127 | successful,·failed,·or·skipped,·plus·an·optional·user·comment.·For·a·failed·test |
| 128 | case,·the·reason·for·termination·is·also·printed·in·the·comment·field.·The | 128 | case,·the·reason·for·termination·is·also·printed·in·the·comment·field.·The |
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| 138 | properties·without·modifying·the·test·suites·using·the·data.·Examples·of | 138 | properties·without·modifying·the·test·suites·using·the·data.·Examples·of |
| 139 | configuration·data·follows:</p><ul><li>Addresses·to·the·test·plant·or·other·instruments</li><li>User·login·information</li><li>Names·of·files·needed·by·the·test</li><li>Names·of·programs·to·be·executed·during·the·test</li><li>Any·other·variable·needed·by·the·test</li></ul><h2·id="syntax"·class="section-heading"> | 139 | configuration·data·follows:</p><ul><li>Addresses·to·the·test·plant·or·other·instruments</li><li>User·login·information</li><li>Names·of·files·needed·by·the·test</li><li>Names·of·programs·to·be·executed·during·the·test</li><li>Any·other·variable·needed·by·the·test</li></ul><h2·id="syntax"·class="section-heading"> |
| 140 | ··<a·href="#syntax"·class="hover-link"> | 140 | ··<a·href="#syntax"·class="hover-link"> |
| 141 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 141 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 142 | ··</a> | 142 | ··</a> |
| 143 | ··<span·class="text">Syntax</span> | 143 | ··<span·class="text">Syntax</span> |
| 144 | </h2> | 144 | </h2> |
| 145 | <p>A·configuration·file·can·contain·any·number·of·elements·of·the·type:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="1422739871-1">{</span><span·class="n">CfgVarName</span><span·class="p">,</span><span·class="n">Value</span><span·class="p"·data-group-id="1422739871-1">}</span><span·class="p">.</span></code></pre><p>where</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">CfgVarName</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="7668322100-1">(</span><span·class="p"·data-group-id="7668322100-1">)</span><span·class="w"> | ||
| 146 | < | 145 | <p>A·configuration·file·can·contain·any·number·of·elements·of·the·type:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="0824938242-1">{</span><span·class="n">CfgVarName</span><span·class="p">,</span><span·class="n">Value</s[·...·truncated·by·diffoscope;·len:·407,·SHA:·f3c409517cc36e05c2de77bfb43d0c9224154fd5fe44f0449c4f97db41a4aef3·...·]"> |
| 146 | </span><span·class="n">Value</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id="5263917920-2">(</span><span·class="p"·data-group-id="5263917920-2">)</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="5263917920-3">[</span><span·class="p"·data-group-id="5263917920-4">{</span><span·class="n">CfgVarName</span><span·class="p">,</span><span·class="n">Value</span><span·class="p"·data-group-id="5263917920-4">}</span><span·class="p"·data-group-id="5263917920-3">]</span></code></pre><h2·id="requiring-and-reading-configuration-data"·class="section-heading"> | ||
| 147 | ··<a·href="#requiring-and-reading-configuration-data"·class="hover-link"> | 147 | ··<a·href="#requiring-and-reading-configuration-data"·class="hover-link"> |
| 148 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 148 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 149 | ··</a> | 149 | ··</a> |
| 150 | ··<span·class="text">Requiring·and·Reading·Configuration·Data</span> | 150 | ··<span·class="text">Requiring·and·Reading·Configuration·Data</span> |
| 151 | </h2> | 151 | </h2> |
| 152 | <p><a·href=""·id="require_config_data"></a></p><p>In·a·test·suite,·one·must·<em>require</em>·that·a·configuration·variable·(<code·class="inline">CfgVarName</code> | 152 | <p><a·href=""·id="require_config_data"></a></p><p>In·a·test·suite,·one·must·<em>require</em>·that·a·configuration·variable·(<code·class="inline">CfgVarName</code> |
| 153 | in·the·previous·definition)·exists·before·attempting·to·read·the·associated | 153 | in·the·previous·definition)·exists·before·attempting·to·read·the·associated |
| Offset 166, 21 lines modified | Offset 166, 21 lines modified | ||
| 166 | <code·class="inline">{require,AliasName,CfgVarName}</code>.·The·arguments·<code·class="inline">AliasName</code>·and·<code·class="inline">CfgVarName</code>·are | 166 | <code·class="inline">{require,AliasName,CfgVarName}</code>.·The·arguments·<code·class="inline">AliasName</code>·and·<code·class="inline">CfgVarName</code>·are |
| 167 | the·same·as·the·arguments·to·<a·href="ct.html#require/1"><code·class="inline">ct:require/1,2</code></a>.·<code·class="inline">AliasName</code> | 167 | the·same·as·the·arguments·to·<a·href="ct.html#require/1"><code·class="inline">ct:require/1,2</code></a>.·<code·class="inline">AliasName</code> |
| 168 | becomes·an·alias·for·the·configuration·variable,·and·can·be·used·as·reference·to | 168 | becomes·an·alias·for·the·configuration·variable,·and·can·be·used·as·reference·to |
| 169 | the·configuration·data·value.·The·configuration·variable·can·be·associated·with | 169 | the·configuration·data·value.·The·configuration·variable·can·be·associated·with |
| 170 | any·number·of·alias·names,·but·each·name·must·be·unique·within·the·same·test | 170 | any·number·of·alias·names,·but·each·name·must·be·unique·within·the·same·test |
| 171 | suite.·The·two·main·uses·for·alias·names·follows:</p><ul><li>To·identify·connections·(described·later).</li><li>To·help·adapt·configuration·data·to·a·test·suite·(or·test·case)·and·improve | 171 | suite.·The·two·main·uses·for·alias·names·follows:</p><ul><li>To·identify·connections·(described·later).</li><li>To·help·adapt·configuration·data·to·a·test·suite·(or·test·case)·and·improve |
| 172 | readability.</li></ul><p>To·read·the·value·of·a·configuration·variable,·use·function | 172 | readability.</li></ul><p>To·read·the·value·of·a·configuration·variable,·use·function |
| 173 | <a·href="ct.html#get_config/1"><code·class="inline">get_config/1,2,3</code></a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">suite</span><span·class="p"·data-group-id="3 | 173 | <a·href="ct.html#get_config/1"><code·class="inline">get_config/1,2,3</code></a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">suite</span><span·class="p"·data-group-id="3441942966-1">(</span><span·class="p"·data-group-id="3441942966-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 174 | ····</span><span·class="p"·data-group-id="3 | 174 | ····</span><span·class="p"·data-group-id="3441942966-2">[</span><span·class="p"·data-group-id="3441942966-3">{</span><span·class="ss">require</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">domain</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'CON[·...·truncated·by·diffoscope;·len:·123,·SHA:·ace386736f2578f6ae5deea7b3c4579e1b51886be94c00fe1e9d8d5b58dbfd22·...·]-2">]</span><span·class="p">.</span><span·class="w"> |
| 175 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 175 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 176 | </span><span·class="nf">testcase</span><span·class="p"·data-group-id="3 | 176 | </span><span·class="nf">testcase</span><span·class="p"·data-group-id="3441942966-4">(</span><span·class="n">Config</span><span·class="p"·data-group-id="3441942966-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 177 | ····</span><span·class="n">Domain</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">get_config</span><span·class="p"·data-group-id="3 | 177 | ····</span><span·class="n">Domain</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">get_config</span><span·class="p"·data-group-id="3441942966-5">(</span><span·class="ss">domain</span><span·class="p"·data-group-id="3441942966-5">)</span><span·class="p">,</span><span·class="w"> |
| 178 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><h2·id="using-configuration-variables-defined-in-multiple-files"·class="section-heading"> | 178 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><h2·id="using-configuration-variables-defined-in-multiple-files"·class="section-heading"> |
| 179 | ··<a·href="#using-configuration-variables-defined-in-multiple-files"·class="hover-link"> | 179 | ··<a·href="#using-configuration-variables-defined-in-multiple-files"·class="hover-link"> |
| 180 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 180 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 181 | ··</a> | 181 | ··</a> |
| 182 | ··<span·class="text">Using·Configuration·Variables·Defined·in·Multiple·Files</span> | 182 | ··<span·class="text">Using·Configuration·Variables·Defined·in·Multiple·Files</span> |
| 183 | </h2> | 183 | </h2> |
| 184 | <p>If·a·configuration·variable·is·defined·in·multiple·files·and·you·want·to·access | 184 | <p>If·a·configuration·variable·is·defined·in·multiple·files·and·you·want·to·access |
| Offset 257, 19 lines modified | Offset 257, 19 lines modified | ||
| 257 | ···<ftp_host> | 257 | ···<ftp_host> |
| 258 | ·······<ftp>"targethost"</ftp> | 258 | ·······<ftp>"targethost"</ftp> |
| 259 | ·······<username>"tester"</username> | 259 | ·······<username>"tester"</username> |
| 260 | ·······<password>"letmein"</password> | 260 | ·······<password>"letmein"</password> |
| 261 | ···</ftp_host> | 261 | ···</ftp_host> |
| 262 | ···<lm_directory>"/test/loadmodules"</lm_directory> | 262 | ···<lm_directory>"/test/loadmodules"</lm_directory> |
| 263 | </config></code></pre><p>Once·read,·this·file·produces·the·same·configuration·variables·as·the·following | 263 | </config></code></pre><p>Once·read,·this·file·produces·the·same·configuration·variables·as·the·following |
| 264 | text·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 264 | text·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="0381155951-1">{</span><span·class="ss">ftp_host</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0381155951-2">[</span><span·class="p"·data-group-id="0381155951-3">{</span><span·class="ss">ftp</span><span·class="p">,</sp[·...·truncated·by·diffoscope;·len:·89,·SHA:·e5991f77c048367e076b6b7581575c210a5e24fbd7a170b45baf8450b014090a·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 265 | ············</span><span·class="p"·data-group-id=" | 265 | ············</span><span·class="p"·data-group-id="0381155951-4">{</span><span·class="ss">username</span><span·class="p">,</span><span·class="s">"tester"</span><span·class="p"·data-group-id="0381155951-4">}</span><span·class="p">,</span><span·class="w"> |
| 266 | ············</span><span·class="p"·data-group-id=" | 266 | ············</span><span·class="p"·data-group-id="0381155951-5">{</span><span·class="ss">password</span><span·class="p">,</span><span·class="s">"letmein"</span><span·class="p"·data-group-id="0381155951-5">}</span><span·class="p"·data-group-id="0381155951-2">]</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·11,·SHA:·f33f546703fa49c75dd303ad99370efa7831b71d8f4752d3285c728e1d20ce65·...·]-1">}</span><span·class="p">.</span><span·class="w"> |
| 267 | </span><span·class="p"·data-group-id=" | 267 | </span><span·class="p"·data-group-id="0381155951-6">{</span><span·class="ss">lm_directory</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"/test/loadmodules"</span><span·class="p"·data-group-id="0381155951-6">}</span><span·class="p">.</span></code></pre><h3·id="implement-a-user-specific-handler"·class="section-heading"> |
| 268 | ··<a·href="#implement-a-user-specific-handler"·class="hover-link"> | 268 | ··<a·href="#implement-a-user-specific-handler"·class="hover-link"> |
| 269 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 269 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 270 | ··</a> | 270 | ··</a> |
| 271 | ··<span·class="text">Implement·a·User-Specific·Handler</span> | 271 | ··<span·class="text">Implement·a·User-Specific·Handler</span> |
| 272 | </h3> | 272 | </h3> |
| 273 | <p>The·user-specific·handler·can·be·written·to·handle·special·configuration·file | 273 | <p>The·user-specific·handler·can·be·written·to·handle·special·configuration·file |
| 274 | formats.·The·parameter·can·be·either·file·names·or·configuration·strings·(the | 274 | formats.·The·parameter·can·be·either·file·names·or·configuration·strings·(the |
| Offset 280, 150 lines modified | Offset 280, 150 lines modified | ||
| 280 | specified·configuration·parameter·is·valid:</p><ul><li><code·class="inline">{ok,·{file,·FileName}}</code>·-·the·parameter·is·a·file·name·and·the·file·exists.</li><li><code·class="inline">{ok,·{config,·ConfigString}}</code>·-·the·parameter·is·a·configuration·string·and | 280 | specified·configuration·parameter·is·valid:</p><ul><li><code·class="inline">{ok,·{file,·FileName}}</code>·-·the·parameter·is·a·file·name·and·the·file·exists.</li><li><code·class="inline">{ok,·{config,·ConfigString}}</code>·-·the·parameter·is·a·configuration·string·and |
| 281 | it·is·correct.</li><li><code·class="inline">{error,·{nofile,·FileName}}</code>·-·there·is·no·file·with·the·specified·name·in | 281 | it·is·correct.</li><li><code·class="inline">{error,·{nofile,·FileName}}</code>·-·there·is·no·file·with·the·specified·name·in |
| 282 | the·current·directory.</li><li><code·class="inline">{error,·{wrong_config,·ConfigString}}</code>·-·the·configuration·string·is·wrong.</li></ul><p>The·function·<code·class="inline">Callback:read_config/1</code>·is·to·be·exported·from·the·callback·module | 282 | the·current·directory.</li><li><code·class="inline">{error,·{wrong_config,·ConfigString}}</code>·-·the·configuration·string·is·wrong.</li></ul><p>The·function·<code·class="inline">Callback:read_config/1</code>·is·to·be·exported·from·the·callback·module |
| 283 | to·read·configuration·data,·initially·before·the·tests·start,·or·as·a·result·of | 283 | to·read·configuration·data,·initially·before·the·tests·start,·or·as·a·result·of |
| 284 | data·being·reloaded·during·test·execution.·The·input·argument·is·the·same·as·for | 284 | data·being·reloaded·during·test·execution.·The·input·argument·is·the·same·as·for |
| 285 | function·<code·class="inline">check_parameter/1</code>.</p><p>The·return·value·is·to·be·either·of·the·following:</p><ul><li><code·class="inline">{ok,·Config}</code>·-·if·the·configuration·variables·are·read·successfully.</li><li><code·class="inline">{error,·{Error,·ErrorDetails}}</code>·-·if·the·callback·module·fails·to·proceed | 285 | function·<code·class="inline">check_parameter/1</code>.</p><p>The·return·value·is·to·be·either·of·the·following:</p><ul><li><code·class="inline">{ok,·Config}</code>·-·if·the·configuration·variables·are·read·successfully.</li><li><code·class="inline">{error,·{Error,·ErrorDetails}}</code>·-·if·the·callback·module·fails·to·proceed |
| 286 | with·the·specified·configuration·parameters.</li></ul><p><code·class="inline">Config</code>·is·the·proper·Erlang·key-value·list,·with·possible·key-value·sublists | 286 | with·the·specified·configuration·parameters.</li></ul><p><code·class="inline">Config</code>·is·the·proper·Erlang·key-value·list,·with·possible·key-value·sublists |
| 287 | as·values,·like·the·earlier·configuration·file·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8 | 287 | as·values,·like·the·earlier·configuration·file·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8869469797-1">[</span><span·class="p"·data-group-id="8869469797-2">{</span><span·class="ss">ftp_host</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8869469797-3">[</span><span·class="p"·data-group-id="8869469797-4">{</s[·...·truncated·by·diffoscope;·len:·821,·SHA:·c2f9a099f9c28860a129be6e8b4e78d03bed3c797e7ebf231ddf1e92773abcd1·...·]7-2">}</span><span·class="p">,</span><span·class="w"> |
| 288 | ·</span><span·class="p"·data-group-id="8 | 288 | ·</span><span·class="p"·data-group-id="8869469797-7">{</span><span·class="ss">lm_directory</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"/test/loadmodules"</span><span·class="p"·data-group-id="8869469797-7">}</span><span·class="p"·data-group-id="8869469797-1">]</span></code></pre><h2·id="examples-of-configuration-data-handling"·class="section-heading"> |
| 289 | ··<a·href="#examples-of-configuration-data-handling"·class="hover-link"> | 289 | ··<a·href="#examples-of-configuration-data-handling"·class="hover-link"> |
| 290 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 290 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 291 | ··</a> | 291 | ··</a> |
| 292 | ··<span·class="text">Examples·of·Configuration·Data·Handling</span> | 292 | ··<span·class="text">Examples·of·Configuration·Data·Handling</span> |
| 293 | </h2> | 293 | </h2> |
| 294 | <p>A·configuration·file·for·using·the·FTP·client·to·access·files·on·a·remote·host | 294 | <p>A·configuration·file·for·using·the·FTP·client·to·access·files·on·a·remote·host |
| 295 | can·look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 295 | can·look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="3443577384-1">{</span><span·class="ss">ftp_host</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3443577384-2">[</span><span·class="p"·data-group-id="3443577384-3">{</span><span·class="ss">ftp</span><span·class="p">,</sp[·...·truncated·by·diffoscope;·len:·89,·SHA:·3c80602faaef1816aa05346c23f0c53a5d2bd4127c6d508ac5c67eea302635c7·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 296 | ············</span><span·class="p"·data-group-id=" | 296 | ············</span><span·class="p"·data-group-id="3443577384-4">{</span><span·class="ss">username</span><span·class="p">,</span><span·class="s">"tester"</span><span·class="p"·data-group-id="3443577384-4">}</span><span·class="p">,</span><span·class="w"> |
| 297 | ············</span><span·class="p"·data-group-id=" | 297 | ············</span><span·class="p"·data-group-id="3443577384-5">{</span><span·class="ss">password</span><span·class="p">,</span><span·class="s">"letmein"</span><span·class="p"·data-group-id="3443577384-5">}</span><span·class="p"·data-group-id="3443577384-2">]</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·11,·SHA:·4a3cebb2546642942f15831c7d02cd5799bb4bd431894f5d5bbb945284cf471c·...·]-1">}</span><span·class="p">.</span><span·class="w"> |
| 298 | </span><span·class="p"·data-group-id=" | 298 | </span><span·class="p"·data-group-id="3443577384-6">{</span><span·class="ss">lm_directory</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"/test/loadmodules"</span><span·class="p"·data-group-id="3443577384-6">}</span><span·class="p">.</span></code></pre><p>The·XML·version·shown·earlier·can·also·be·used,·but·it·is·to·be·explicitly |
| 299 | specified·that·the·<code·class="inline">ct_config_xml</code>·callback·module·is·to·be·used·by | 299 | specified·that·the·<code·class="inline">ct_config_xml</code>·callback·module·is·to·be·used·by |
| 300 | <code·class="inline">Common·Test</code>.</p><p>The·following·is·an·example·of·how·to·assert·that·the·configuration·data·is | 300 | <code·class="inline">Common·Test</code>.</p><p>The·following·is·an·example·of·how·to·assert·that·the·configuration·data·is |
| 301 | available·and·can·be·used·for·an·FTP·session:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">init_per_testcase</span><span·class="p"·data-group-id=" | 301 | available·and·can·be·used·for·an·FTP·session:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">init_per_testcase</span><span·class="p"·data-group-id="7079164688-1">(</span><span·class="ss">ftptest</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Config</span><span·class="p"·data-group-id="7079164688-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 302 | ····</span><span·class="p"·data-group-id=" | 302 | ····</span><span·class="p"·data-group-id="7079164688-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p">_</span><span·class="p"·data-group-id="7079164688-2">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ct_ftp</span><span[·...·truncated·by·diffoscope;·len:·168,·SHA:·bc93e254c8c0939c178257d914ee4f915f75405c3509c89895666ae80e6b89fc·...·]-3">)</span><span·class="p">,</span><span·class="w"> |
| 303 | ····</span><span·class="n">Config</span><span·class="p">.</span><span·class="w"> | 303 | ····</span><span·class="n">Config</span><span·class="p">.</span><span·class="w"> |
| 304 | </span><span·class="nf">end_per_testcase</span><span·class="p"·data-group-id=" | 304 | </span><span·class="nf">end_per_testcase</span><span·class="p"·data-group-id="7079164688-4">(</span><span·class="ss">ftptest</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">Config</span><span·class="p"·data-group-id="7079164688-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 305 | ····</span><span·class="nc">ct_ftp</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id=" | 305 | ····</span><span·class="nc">ct_ftp</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id="7079164688-5">(</span><span·class="ss">ftp</span><span·class="p"·data-group-id="7079164688-5">)</span><span·class="p">.</span><span·class="w"> |
| 306 | </span><span·class="nf">ftptest</span><span·class="p"·data-group-id=" | 306 | </span><span·class="nf">ftptest</span><span·class="p"·data-group-id="7079164688-6">(</span><span·class="p"·data-group-id="7079164688-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 307 | ····</span><span·class="p"·data-group-id=" | 307 | ····</span><span·class="p"·data-group-id="7079164688-7">[</span><span·class="p"·data-group-id="7079164688-8">{</span><span·class="ss">require</span><span·class="p">,</span><span·class="ss">ftp</span><span·class="p">,</span><span·class="ss">ftp_host</span><span·class="p"·data-group-id="7079164688-8">}</span><span·class="p">,</span><span·class="w"> |
| 308 | ·····</span><span·class="p"·data-group-id=" | 308 | ·····</span><span·class="p"·data-group-id="7079164688-9">{</span><span·class="ss">require</span><span·class="p">,</span><span·class="ss">lm_directory</span><span·class="p"·data-group-id="7079164688-9">}</span><span·class="p"·data-group-id="7079164688-7">]</span><span·class="p">.</span><span·class="w"> |
| 309 | </span><span·class="nf">ftptest</span><span·class="p"·data-group-id=" | 309 | </span><span·class="nf">ftptest</span><span·class="p"·data-group-id="7079164688-10">(</span><span·class="n">Config</span><span·class="p"·data-group-id="7079164688-10">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 310 | ····</span><span·class="n">Remote</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">join</span><span·class="p"·data-group-id=" | 310 | ····</span><span·class="n">Remote</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">join</span><span·class="p"·data-group-id="7079164688-11">(</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">get_config</span><span·class="p"·data-group-id="7079164688-12">(</span><span·class="ss">lm_directory</span><span·class="p"·data-group-id="7079164688-12">)</span><span[·...·truncated·by·diffoscope;·len:·127,·SHA:·8ce82d37f84638f2ccf4a20d7af523ab4f71abf09517ed01318c67d6c0f3c5e4·...·]-11">)</span><span·class="p">,</span><span·class="w"> |
| 311 | ····</span><span·class="n">Local</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">join</span><span·class="p"·data-group-id=" | 311 | ····</span><span·class="n">Local</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">join</span><span·class="p"·data-group-id="7079164688-13">(</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id="7079164688-14">(</span><span·class="ss">priv_dir</span><span·class="p">,</span><span·class="n">Config</span><spa[·...·truncated·by·diffoscope;·len:·184,·SHA:·da33ee20dd8e35f591d8ca0c4423a77323388b55ef107484eb4bceb035934ec0·...·]-13">)</span><span·class="p">,</span><span·class="w"> |
| 312 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ct_ftp</span><span·class="p">:</span><span·class="nf">recv</span><span·class="p"·data-group-id=" | 312 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ct_ftp</span><span·class="p">:</span><span·class="nf">recv</span><span·class="p"·data-group-id="7079164688-15">(</span><span·class="ss">ftp</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Remote</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Local</span><span·class="p"·data-group-id="7079164688-15">)</span><span·class="p">,</span><span·class="w"> |
| 313 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>The·following·is·an·example·of·how·the·functions·in·the·previous·example·can·be | 313 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>The·following·is·an·example·of·how·the·functions·in·the·previous·example·can·be |
| 314 | rewritten·if·it·is·necessary·to·open·multiple·connections·to·the·FTP·server:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">init_per_testcase</span><span·class="p"·data-group-id=" | 314 | rewritten·if·it·is·necessary·to·open·multiple·connections·to·the·FTP·server:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">init_per_testcase</span><span·class="p"·data-group-id="1658559706-1">(</span><span·class="ss">ftptest</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Config</span><span·class="p"·data-group-id="1658559706-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 315 | ····</span><span·class="p"·data-group-id=" | 315 | ····</span><span·class="p"·data-group-id="1658559706-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">Handle1</span><span·class="p"·data-group-id="1658559706-2">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ct_ftp</span[·...·truncated·by·diffoscope;·len:·178,·SHA:·b9f95c6115852b6711b8e4f1401381e4032052dd312d0250e5050c4573a092a4·...·]6-3">)</span><span·class="p">,</span><span·class="w"> |
| 316 | ····</span><span·class="p"·data-group-id=" | 316 | ····</span><span·class="p"·data-group-id="1658559706-4">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">Handle2</span><span·class="p"·data-group-id="1658559706-4">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ct_ftp</span[·...·truncated·by·diffoscope;·len:·178,·SHA:·236305a2274ff14880778ccf0e66cf933030085c48cd00f6e7feb849e016ea3b·...·]6-5">)</span><span·class="p">,</span><span·class="w"> |
| 317 | ····</span><span·class="p"·data-group-id=" | 317 | ····</span><span·class="p"·data-group-id="1658559706-6">[</span><span·class="p"·data-group-id="1658559706-7">{</span><span·class="ss">ftp_handles</span><span·class="p">,</span><span·class="p"·data-group-id="1658559706-8">[</span><span·class="n">Handle1</span><span·class="p">,</span><span·class="n"[·...·truncated·by·diffoscope;·len:·262,·SHA:·3c17ece675fe87c4c3eb682ab6612a98826b22ec4f3f1eb8ecbd45fea8ae8814·...·]6-6">]</span><span·class="p">.</span><span·class="w"> |
| 318 | </span><span·class="nf">end_per_testcase</span><span·class="p"·data-group-id=" | 318 | </span><span·class="nf">end_per_testcase</span><span·class="p"·data-group-id="1658559706-9">(</span><span·class="ss">ftptest</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Config</span><span·class="p"·data-group-id="1658559706-9">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 319 | ····</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">foreach</span><span·class="p"·data-group-id=" | 319 | ····</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">foreach</span><span·class="p"·data-group-id="1658559706-10">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="1658559706-11">(</span><span·class="n">Handle</span><span·class="p"·data-group-id="1658559706-11">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·[·...·truncated·by·diffoscope;·len:·213,·SHA:·f6843846e064853e7e2360abd3cfbe7ecbfd3c6356df1cf6960a13b66dee5513·...·]6-12">)</span><span·class="w">·</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 320 | ··················</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id=" | 320 | ··················</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id="1658559706-13">(</span><span·class="ss">ftp_handles</span><span·class="p">,</span><span·class="n">Config</span><span·class="p"·data-group-id="1658559706-13">)</span><span·class="p"·data-group-id="1658559706-10">)</span><span·class="p">.</span><span·class="w"> |
| 321 | </span><span·class="nf">ftptest</span><span·class="p"·data-group-id=" | 321 | </span><span·class="nf">ftptest</span><span·class="p"·data-group-id="1658559706-14">(</span><span·class="p"·data-group-id="1658559706-14">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 322 | ····</span><span·class="p"·data-group-id=" | 322 | ····</span><span·class="p"·data-group-id="1658559706-15">[</span><span·class="p"·data-group-id="1658559706-16">{</span><span·class="ss">require</span><span·class="p">,</span><span·class="ss">ftp_host</span><span·class="p"·data-group-id="1658559706-16">}</span><span·class="p">,</span><span·class="w"> |
| 323 | ·····</span><span·class="p"·data-group-id=" | 323 | ·····</span><span·class="p"·data-group-id="1658559706-17">{</span><span·class="ss">require</span><span·class="p">,</span><span·class="ss">lm_directory</span><span·class="p"·data-group-id="1658559706-17">}</span><span·class="p"·data-group-id="1658559706-15">]</span><span·class="p">.</span><span·class="w"> |
| 324 | </span><span·class="nf">ftptest</span><span·class="p"·data-group-id=" | 324 | </span><span·class="nf">ftptest</span><span·class="p"·data-group-id="1658559706-18">(</span><span·class="n">Config</span><span·class="p"·data-group-id="1658559706-18">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 325 | ····</span><span·class="n">Remote</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">join</span><span·class="p"·data-group-id=" | 325 | ····</span><span·class="n">Remote</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">join</span><span·class="p"·data-group-id="1658559706-19">(</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">get_config</span><span·class="p"·data-group-id="1658559706-20">(</span><span·class="ss">lm_directory</span><span·class="p"·data-group-id="1658559706-20">)</span><span[·...·truncated·by·diffoscope;·len:·126,·SHA:·f24f403452b2ba5e3763e21c60ebdd5b148f5d0ad063b38bc0bf75187a1756db·...·]6-19">)</span><span·class="p">,</span><span·class="w"> |
| 326 | ····</span><span·class="n">Local</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">join</span><span·class="p"·data-group-id=" | 326 | ····</span><span·class="n">Local</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">join</span><span·class="p"·data-group-id="1658559706-21">(</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id="1658559706-22">(</span><span·class="ss">priv_dir</span><span·class="p">,</span><span·class="n">Config</span><spa[·...·truncated·by·diffoscope;·len:·183,·SHA:·73ddaf3e55bba2e675a9642b69c5767f7d6173985d8db95a47bb5dfa6943ce34·...·]6-21">)</span><span·class="p">,</span><span·class="w"> |
| 327 | ····</span><span·class="p"·data-group-id=" | 327 | ····</span><span·class="p"·data-group-id="1658559706-23">[</span><span·class="n">Handle</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="n">MoreHandles</span><span·class="p"·data-group-id="1658559706-23">]</span><span·class="w">·</span><span·class="o">=</s[·...·truncated·by·diffoscope;·len:·300,·SHA:·f47ae86f664a46d5b34705e3ee12c4828407c3acd9ce2660aba994d0e5006821·...·]6-24">)</span><span·class="p">,</span><span·class="w"> |
| 328 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ct_ftp</span><span·class="p">:</span><span·class="nf">recv</span><span·class="p"·data-group-id=" | 328 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ct_ftp</span><span·class="p">:</span><span·class="nf">recv</span><span·class="p"·data-group-id="1658559706-25">(</span><span·class="n">Handle</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Remote</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Local</span><span·class="p"·data-group-id="1658559706-25">)</span><span·class="p">,</span><span·class="w"> |
| 329 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><h2·id="example-of-user-specific-configuration-handler"·class="section-heading"> | 329 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><h2·id="example-of-user-specific-configuration-handler"·class="section-heading"> |
| 330 | ··<a·href="#example-of-user-specific-configuration-handler"·class="hover-link"> | 330 | ··<a·href="#example-of-user-specific-configuration-handler"·class="hover-link"> |
| 331 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 331 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 332 | ··</a> | 332 | ··</a> |
| 333 | ··<span·class="text">Example·of·User-Specific·Configuration·Handler</span> | 333 | ··<span·class="text">Example·of·User-Specific·Configuration·Handler</span> |
| 334 | </h2> | 334 | </h2> |
| 335 | <p>A·simple·configuration·handling·driver,·asking·an·external·server·for | 335 | <p>A·simple·configuration·handling·driver,·asking·an·external·server·for |
| 336 | configuration·data,·can·be·implemented·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 336 | configuration·data,·can·be·implemented·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="9069886600-1">(</span><span·class="ss">config_driver</span><span·class="p"·data-group-id="9069886600-1">)</span><span·class="p">.</span><span·class="w"> |
| 337 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 337 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="9069886600-2">(</span><span·class="p"·data-group-id="9069886600-3">[</span><span·class="ss">read_config</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">check_parameter</span><span·clas[·...·truncated·by·diffoscope;·len:·133,·SHA:·ef531c9bc7713206d4a63057baf5c1e057eedccf0deecd7111001339676db3a3·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 338 | </span><span·class="nf">read_config</span><span·class="p"·data-group-id=" | 338 | </span><span·class="nf">read_config</span><span·class="p"·data-group-id="9069886600-4">(</span><span·class="n">ServerName</span><span·class="p"·data-group-id="9069886600-4">)</span><span·class="p">-></span><span·class="w"> |
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| Offset 197, 67 lines modified | Offset 197, 67 lines modified | ||
| 197 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 197 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 198 | ··</a> | 198 | ··</a> |
| 199 | ··<span·class="text">General·Config</span> | 199 | ··<span·class="text">General·Config</span> |
| 200 | </h3> | 200 | </h3> |
| 201 | <p>Here·follows·the·general·configuration·terms·that·are·allowed·in·a·cover | 201 | <p>Here·follows·the·general·configuration·terms·that·are·allowed·in·a·cover |
| 202 | specification·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·List·of·Nodes·on·which·cover·will·be·active·during·test.</span><span·class="w"> | 202 | specification·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·List·of·Nodes·on·which·cover·will·be·active·during·test.</span><span·class="w"> |
| 203 | </span><span·class="c1">%%·Nodes·=·[atom()]</span><span·class="w"> | 203 | </span><span·class="c1">%%·Nodes·=·[atom()]</span><span·class="w"> |
| 204 | </span><span·class="p"·data-group-id=" | 204 | </span><span·class="p"·data-group-id="2491984432-1">{</span><span·class="nb">nodes</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Nodes</span><span·class="p"·data-group-id="2491984432-1">}</span><span·class="p">.</span><span·class="w"> |
| 205 | </span><span·class="c1">%%·Files·with·previously·exported·cover·data·to·include·in·analysis.</span><span·class="w"> | 205 | </span><span·class="c1">%%·Files·with·previously·exported·cover·data·to·include·in·analysis.</span><span·class="w"> |
| 206 | </span><span·class="c1">%%·CoverDataFiles·=·[string()]</span><span·class="w"> | 206 | </span><span·class="c1">%%·CoverDataFiles·=·[string()]</span><span·class="w"> |
| 207 | </span><span·class="p"·data-group-id=" | 207 | </span><span·class="p"·data-group-id="2491984432-2">{</span><span·class="ss">import</span><span·class="p">,</span><span·class="w">·</span><span·class="n">CoverDataFiles</span><span·class="p"·data-group-id="2491984432-2">}</span><span·class="p">.</span><span·class="w"> |
| 208 | </span><span·class="c1">%%·Cover·data·file·to·export·from·this·session.</span><span·class="w"> | 208 | </span><span·class="c1">%%·Cover·data·file·to·export·from·this·session.</span><span·class="w"> |
| 209 | </span><span·class="c1">%%·CoverDataFile·=·string()</span><span·class="w"> | 209 | </span><span·class="c1">%%·CoverDataFile·=·string()</span><span·class="w"> |
| 210 | </span><span·class="p"·data-group-id=" | 210 | </span><span·class="p"·data-group-id="2491984432-3">{</span><span·class="ss">export</span><span·class="p">,</span><span·class="w">·</span><span·class="n">CoverDataFile</span><span·class="p"·data-group-id="2491984432-3">}</span><span·class="p">.</span><span·class="w"> |
| 211 | </span><span·class="c1">%%·Cover·analysis·level.</span><span·class="w"> | 211 | </span><span·class="c1">%%·Cover·analysis·level.</span><span·class="w"> |
| 212 | </span><span·class="c1">%%·Level·=·details·|·overview</span><span·class="w"> | 212 | </span><span·class="c1">%%·Level·=·details·|·overview</span><span·class="w"> |
| 213 | </span><span·class="p"·data-group-id=" | 213 | </span><span·class="p"·data-group-id="2491984432-4">{</span><span·class="ss">level</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Level</span><span·class="p"·data-group-id="2491984432-4">}</span><span·class="p">.</span><span·class="w"> |
| 214 | </span><span·class="c1">%%·Directories·to·include·in·cover.</span><span·class="w"> | 214 | </span><span·class="c1">%%·Directories·to·include·in·cover.</span><span·class="w"> |
| 215 | </span><span·class="c1">%%·Dirs·=·[string()]</span><span·class="w"> | 215 | </span><span·class="c1">%%·Dirs·=·[string()]</span><span·class="w"> |
| 216 | </span><span·class="p"·data-group-id=" | 216 | </span><span·class="p"·data-group-id="2491984432-5">{</span><span·class="ss">incl_dirs</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Dirs</span><span·class="p"·data-group-id="2491984432-5">}</span><span·class="p">.</span><span·class="w"> |
| 217 | </span><span·class="c1">%%·Directories,·including·subdirectories,·to·include.</span><span·class="w"> | 217 | </span><span·class="c1">%%·Directories,·including·subdirectories,·to·include.</span><span·class="w"> |
| 218 | </span><span·class="p"·data-group-id=" | 218 | </span><span·class="p"·data-group-id="2491984432-6">{</span><span·class="ss">incl_dirs_r</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Dirs</span><span·class="p"·data-group-id="2491984432-6">}</span><span·class="p">.</span><span·class="w"> |
| 219 | </span><span·class="c1">%%·Specific·modules·to·include·in·cover.</span><span·class="w"> | 219 | </span><span·class="c1">%%·Specific·modules·to·include·in·cover.</span><span·class="w"> |
| 220 | </span><span·class="c1">%%·Mods·=·[atom()]</span><span·class="w"> | 220 | </span><span·class="c1">%%·Mods·=·[atom()]</span><span·class="w"> |
| 221 | </span><span·class="p"·data-group-id=" | 221 | </span><span·class="p"·data-group-id="2491984432-7">{</span><span·class="ss">incl_mods</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Mods</span><span·class="p"·data-group-id="2491984432-7">}</span><span·class="p">.</span><span·class="w"> |
| 222 | </span><span·class="c1">%%·Directories·to·exclude·in·cover.</span><span·class="w"> | 222 | </span><span·class="c1">%%·Directories·to·exclude·in·cover.</span><span·class="w"> |
| 223 | </span><span·class="p"·data-group-id=" | 223 | </span><span·class="p"·data-group-id="2491984432-8">{</span><span·class="ss">excl_dirs</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Dirs</span><span·class="p"·data-group-id="2491984432-8">}</span><span·class="p">.</span><span·class="w"> |
| 224 | </span><span·class="c1">%%·Directories,·including·subdirectories,·to·exclude.</span><span·class="w"> | 224 | </span><span·class="c1">%%·Directories,·including·subdirectories,·to·exclude.</span><span·class="w"> |
| 225 | </span><span·class="p"·data-group-id=" | 225 | </span><span·class="p"·data-group-id="2491984432-9">{</span><span·class="ss">excl_dirs_r</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Dirs</span><span·class="p"·data-group-id="2491984432-9">}</span><span·class="p">.</span><span·class="w"> |
| 226 | </span><span·class="c1">%%·Specific·modules·to·exclude·in·cover.</span><span·class="w"> | 226 | </span><span·class="c1">%%·Specific·modules·to·exclude·in·cover.</span><span·class="w"> |
| 227 | </span><span·class="p"·data-group-id=" | 227 | </span><span·class="p"·data-group-id="2491984432-10">{</span><span·class="ss">excl_mods</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Mods</span><span·class="p"·data-group-id="2491984432-10">}</span><span·class="p">.</span><span·class="w"> |
| 228 | </span><span·class="c1">%%·Cross·cover·compilation</span><span·class="w"> | 228 | </span><span·class="c1">%%·Cross·cover·compilation</span><span·class="w"> |
| 229 | </span><span·class="c1">%%·Tag·=·atom(),·an·identifier·for·a·test·run</span><span·class="w"> | 229 | </span><span·class="c1">%%·Tag·=·atom(),·an·identifier·for·a·test·run</span><span·class="w"> |
| 230 | </span><span·class="c1">%%·Mod·=·[atom()],·modules·to·compile·for·accumulated·analysis</span><span·class="w"> | 230 | </span><span·class="c1">%%·Mod·=·[atom()],·modules·to·compile·for·accumulated·analysis</span><span·class="w"> |
| 231 | </span><span·class="p"·data-group-id=" | 231 | </span><span·class="p"·data-group-id="2491984432-11">{</span><span·class="ss">cross</span><span·class="p">,</span><span·class="p"·data-group-id="2491984432-12">[</span><span·class="p"·data-group-id="2491984432-13">{</span><span·class="n">Tag</span><span·class="p">,</span><span·class="n">Mods</[·...·truncated·by·diffoscope;·len:·153,·SHA:·aa6f54161b230322c83de1cbfbad4a3474b4678931c979bae134332814fc7653·...·]2-11">}</span><span·class="p">.</span></code></pre><p>The·terms·<code·class="inline">incl_dirs_r</code>·and·<code·class="inline">excl_dirs_r</code>·tell·<code·class="inline">Common·Test</code>·to·search·the |
| 232 | specified·directories·recursively·and·include·or·exclude·any·module·found·during | 232 | specified·directories·recursively·and·include·or·exclude·any·module·found·during |
| 233 | the·search.·The·terms·<code·class="inline">incl_dirs</code>·and·<code·class="inline">excl_dirs</code>·result·in·a·non-recursive | 233 | the·search.·The·terms·<code·class="inline">incl_dirs</code>·and·<code·class="inline">excl_dirs</code>·result·in·a·non-recursive |
| 234 | search·for·modules·(that·is,·only·modules·found·in·the·specified·directories·are | 234 | search·for·modules·(that·is,·only·modules·found·in·the·specified·directories·are |
| 235 | included·or·excluded).</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Directories·containing·Erlang·modules·to·be·included·in·a·code·coverage·test | 235 | included·or·excluded).</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Directories·containing·Erlang·modules·to·be·included·in·a·code·coverage·test |
| 236 | must·exist·in·the·code·server·path.·Otherwise,·the·Cover·tool·fails·to | 236 | must·exist·in·the·code·server·path.·Otherwise,·the·Cover·tool·fails·to |
| 237 | recompile·the·modules.·It·is·not·sufficient·to·specify·these·directories·in | 237 | recompile·the·modules.·It·is·not·sufficient·to·specify·these·directories·in |
| 238 | the·cover·specification·file·for·<code·class="inline">Common·Test</code>.</p></section><h3·id="otp-application-config"·class="section-heading"> | 238 | the·cover·specification·file·for·<code·class="inline">Common·Test</code>.</p></section><h3·id="otp-application-config"·class="section-heading"> |
| 239 | ··<a·href="#otp-application-config"·class="hover-link"> | 239 | ··<a·href="#otp-application-config"·class="hover-link"> |
| 240 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 240 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 241 | ··</a> | 241 | ··</a> |
| 242 | ··<span·class="text">OTP·application·Config</span> | 242 | ··<span·class="text">OTP·application·Config</span> |
| 243 | </h3> | 243 | </h3> |
| 244 | <p>When·using·a·cover·specification·in·the·testing·of·an·OTP·application·itself, | 244 | <p>When·using·a·cover·specification·in·the·testing·of·an·OTP·application·itself, |
| 245 | there·is·a·special·incl_app·directive·that·includes·the·applications·modules·for | 245 | there·is·a·special·incl_app·directive·that·includes·the·applications·modules·for |
| 246 | the·cover·compilation.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 246 | the·cover·compilation.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="7483153548-1">{</span><span·class="ss">incl_app</span><span·class="p">,</span><span·class="w">·</span><span·class="n">AppName</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cover</span><span·class="w">·</span><span·class="p">:</span>[·...·truncated·by·diffoscope;·len:·224,·SHA:·87b287594c28f9faac38a4e375832b8ea4e186fa3c6c0388106b75660c67aaef·...·]-1">}</span><span·class="p">.</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>If·you·desire·to·also·use·some·other·general·cover·configuration·together·with |
| 247 | this·option·you·should·insert·the·AppName·in·between·the·option·and·its·value | 247 | this·option·you·should·insert·the·AppName·in·between·the·option·and·its·value |
| 248 | creating·a·three·tuple.</p></section><p><a·href=""·id="cross_cover"></a></p><h2·id="cross-cover-analysis"·class="section-heading"> | 248 | creating·a·three·tuple.</p></section><p><a·href=""·id="cross_cover"></a></p><h2·id="cross-cover-analysis"·class="section-heading"> |
| 249 | ··<a·href="#cross-cover-analysis"·class="hover-link"> | 249 | ··<a·href="#cross-cover-analysis"·class="hover-link"> |
| 250 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 250 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 251 | ··</a> | 251 | ··</a> |
| 252 | ··<span·class="text">Cross·Cover·Analysis</span> | 252 | ··<span·class="text">Cross·Cover·Analysis</span> |
| 253 | </h2> | 253 | </h2> |
| Offset 276, 15 lines modified | Offset 276, 15 lines modified | ||
| 276 | ··{incl_mods,[m1]}.</code></pre><p>This·gives·an·entry·for·<code·class="inline">m1</code>·also·in·the·cover·log·for·test·run·<code·class="inline">s2</code>.·The | 276 | ··{incl_mods,[m1]}.</code></pre><p>This·gives·an·entry·for·<code·class="inline">m1</code>·also·in·the·cover·log·for·test·run·<code·class="inline">s2</code>.·The |
| 277 | problem·is·that·this·only·reflects·the·coverage·by·<code·class="inline">s2</code>·tests,·not·the | 277 | problem·is·that·this·only·reflects·the·coverage·by·<code·class="inline">s2</code>·tests,·not·the |
| 278 | accumulated·result·over·<code·class="inline">s1</code>·and·<code·class="inline">s2</code>.·This·is·where·the·cross·cover·mechanism | 278 | accumulated·result·over·<code·class="inline">s1</code>·and·<code·class="inline">s2</code>.·This·is·where·the·cross·cover·mechanism |
| 279 | comes·in·handy.</p><p>If·instead·the·cover·specification·for·<code·class="inline">s2</code>·is·like·the·following:</p><pre><code·class="text">s2.cover: | 279 | comes·in·handy.</p><p>If·instead·the·cover·specification·for·<code·class="inline">s2</code>·is·like·the·following:</p><pre><code·class="text">s2.cover: |
| 280 | ··{cross,[{s1,[m1]}]}.</code></pre><p>Then·<code·class="inline">m1</code>·is·cover·compiled·in·test·run·<code·class="inline">s2</code>,·but·not·shown·in·the·coverage·log. | 280 | ··{cross,[{s1,[m1]}]}.</code></pre><p>Then·<code·class="inline">m1</code>·is·cover·compiled·in·test·run·<code·class="inline">s2</code>,·but·not·shown·in·the·coverage·log. |
| 281 | Instead,·if·<a·href="ct_cover.html#cross_cover_analyse/2"><code·class="inline">ct_cover:cross_cover_analyse/2</code></a>·is·called·after·both·<code·class="inline">s1</code>·and·<code·class="inline">s2</code> | 281 | Instead,·if·<a·href="ct_cover.html#cross_cover_analyse/2"><code·class="inline">ct_cover:cross_cover_analyse/2</code></a>·is·called·after·both·<code·class="inline">s1</code>·and·<code·class="inline">s2</code> |
| 282 | test·runs·are·completed,·the·accumulated·result·for·<code·class="inline">m1</code>·is·available·in·the | 282 | test·runs·are·completed,·the·accumulated·result·for·<code·class="inline">m1</code>·is·available·in·the |
| 283 | cross·cover·log·for·test·run·<code·class="inline">s1</code>.</p><p>The·call·to·the·analyze·function·must·be·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">ct_cover</span><span·class="p">:</span><span·class="nf">cross_cover_analyse</span><span·class="p"·data-group-id=" | 283 | cross·cover·log·for·test·run·<code·class="inline">s1</code>.</p><p>The·call·to·the·analyze·function·must·be·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">ct_cover</span><span·class="p">:</span><span·class="nf">cross_cover_analyse</span><span·class="p"·data-group-id="4721215950-1">(</span><span·class="n">Level</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4721215950-2">[</span><span·class="p"·data-group-id="4721215950-3">{</span><span·class="ss">s1</span><span·class="p">,</span><s[·...·truncated·by·diffoscope;·len:·387,·SHA:·367e219c58e0b34f3bc75f285aa79826af4d265df7811a6a02c0f86f4caec289·...·]-1">)</span><span·class="p">.</span></code></pre><p>Here,·<code·class="inline">S1LogDir</code>·and·<code·class="inline">S2LogDir</code>·are·the·directories·named·<code·class="inline"><TestName>.logs</code>·for |
| 284 | each·test·respectively.</p><p>Notice·the·tags·<code·class="inline">s1</code>·and·<code·class="inline">s2</code>,·which·are·used·in·the·cover·specification·file | 284 | each·test·respectively.</p><p>Notice·the·tags·<code·class="inline">s1</code>·and·<code·class="inline">s2</code>,·which·are·used·in·the·cover·specification·file |
| 285 | and·in·the·call·to·<a·href="ct_cover.html#cross_cover_analyse/2"><code·class="inline">ct_cover:cross_cover_analyse/2</code></a>.·The·purpose·of·these·is | 285 | and·in·the·call·to·<a·href="ct_cover.html#cross_cover_analyse/2"><code·class="inline">ct_cover:cross_cover_analyse/2</code></a>.·The·purpose·of·these·is |
| 286 | only·to·map·the·modules·specified·in·the·cover·specification·to·the·log | 286 | only·to·map·the·modules·specified·in·the·cover·specification·to·the·log |
| 287 | directory·specified·in·the·call·to·the·analyze·function.·The·tag·name·has·no | 287 | directory·specified·in·the·call·to·the·analyze·function.·The·tag·name·has·no |
| 288 | meaning·beyond·this.</p><h2·id="logging"·class="section-heading"> | 288 | meaning·beyond·this.</p><h2·id="logging"·class="section-heading"> |
| 289 | ··<a·href="#logging"·class="hover-link"> | 289 | ··<a·href="#logging"·class="hover-link"> |
| 290 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 290 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 1916, 25 lines modified | Offset 1916, 25 lines modified | ||
| 1916 | ························Opt·::·element·|·all, | 1916 | ························Opt·::·element·|·all, |
| 1917 | ························ValueOrElement·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>()·|·Default.</pre> | 1917 | ························ValueOrElement·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>()·|·Default.</pre> |
| 1918 | ······</div> | 1918 | ······</div> |
| 1919 | <p>Reads·configuration·data·values.</p><p>Returns·the·matching·values·or·configuration·elements,·given·a·configuration | 1919 | <p>Reads·configuration·data·values.</p><p>Returns·the·matching·values·or·configuration·elements,·given·a·configuration |
| 1920 | variable·key·or·its·associated·name·(if·one·has·been·specified·with | 1920 | variable·key·or·its·associated·name·(if·one·has·been·specified·with |
| 1921 | <a·href="#require/2"><code·class="inline">ct:require/2</code></a>·or·a·<code·class="inline">require</code>·statement).</p><p><em>Example:</em></p><p>Given·the·following·configuration·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="4574241806-1">{</span><span·class="ss">unix</span><span·class="p">,</span><span·class="p"·data-group-id="4574241806-2">[</span><span·class="p"·data-group-id="4574241806-3">{</span><span·class="ss">telnet</span><span·class="p">,</span><span·class="n">IpAddr</span><span·class="p"·data-group-id="4574241806-3">}</span><span·class="p">,</span><span·class="w"> | ||
| 1922 | ·······</span><span·class="p"·data-group-id="4574241806-4">{</span><span·class="ss">user</span><span·class="p">,</span><span·class="p"·data-group-id="4574241806-5">[</span><span·class="p"·data-group-id="4574241806-6">{</span><span·class="ss">username</span><span·class="p">,</span><span·class="n">Username</span><span·class="p"·data-group-id="4574241806-6">}</span><span·class="p">,</span><span·class="w"> | ||
| 1923 | ··············</span><span·class="p"·data-group-id="4574241806-7">{</span><span·class="ss">password</span><span·class="p">,</span><span·class="n">Password</span><span·class="p"·data-group-id="4574241806-7">}</span><span·class="p"·data-group-id="4574241806-5">]</span><span·class="p"·data-group-id="4574241806-4">}</span><span·class="p"·data-group-id="4574241806-2">]</span><span·class="p"·data-group-id="4574241806-1">}</span><span·class="p">.</span></code></pre><p>Then:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">get_config</span><span·class="p"·data-group-id="1630416510-1">(</span><span·class="ss">unix</span><span·class="p">,</span><span·class="n">Default</span><span·class="p"·data-group-id="1630416510-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="1630416510-2">[</span><span·class="p"·data-group-id="1630416510-3">{</span><span·class="ss">telnet</span><span·class="p">,</span><span·class="n">IpAddr</span><span·class="p"·data-group-id="1630416510-3">}</span><span·class="p">,</span><span·class="w"> | ||
| 1924 | · | 1921 | <a·href="#require/2"><code·class="inline">ct:require/2</code></a>·or·a·<code·class="inline">require</code>·statement).</p><p><em>Example:</em></p><p>Given·the·following·configuration·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·[·...·truncated·by·diffoscope;·len:·348,·SHA:·57f3526942d616be4d9be5f5bfb7c8b24067b336d3c11db0e267d068951b9efb·...·]</span><span·class="w"> |
| 1922 | ·······</span><span·class="p"·data-group-id="6445962814-4">{</span><span·class="ss">user</span><span·class="p">,</span><span·class="p"·data-group-id="6445962814-5">[</span><span·class="p"·data-group-id="6445962814-6">{</span><span·class="ss">username</span><span·class="p">,</span><span·class="n">Username</span><span·class="p"·data-group-id="6445962814-6">}</span><span·class="p">,</span><span·class="w"> | ||
| 1923 | ··············</span><span·class="p"·data-group-id="6445962814-7">{</span><span·class="ss">password</span><span·class="p">,</span><span·class="n">Password</span><span·class="p"·data-group-id="6445962814-7">}</span><span·class="p"·data-group-id="6445962814-5">]</span><span·class="p"·data-group-id="6445962814-4">}</span><span·class="p"·data-group-id="6445962814-2">]</span><span·class="p"·data-group-id="6445962814-1">}</span><span·class="p">.</span></code></pre><p>Then:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">get_config</span><span·class="p"·data-group-id="1441648188-1">(</span><span·class="ss">unix</span><span·class="p">,</span><span·class="n">Default</span><span·class="p"·data-group-id="1441648188-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="1441648188-2">[</span><span·class="p"·data-group-id="1441648188-3">{</span><span·class="ss">telnet</span><span·class="p">,</span><span·class="n">IpAddr</span><span·class="p"·data-group-id="1441648188-3">}</span><span·class="p">,</span><span·class="w"> | ||
| 1924 | ·</span><span·class="p"·data-group-id="1441648188-4">{</span><span·class="ss">user</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1441648188-5">[</span><span·class="p"·data-group-id="1441648188-6">{</span><span·class="ss">username</span><span·class="p">,</span><span·class="n">Username</span><span·class="p"·data-group-id="1441648188-6">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1441648188-7">{</span><span·class="ss">password</span><span·class="p">,</span><span·class="n">Password</span><span·class="p"·data-group-id="1441648188-7">}</span><span·class="p"·data-group-id="1441648188-5">]</span><span·class="p"·data-group-id="1441648188-4">}</span><span·class="p"·data-group-id="1441648188-2">]</span><span·class="w"> | ||
| 1925 | </span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">get_config</span><span·class="p"·data-group-id="1 | 1925 | </span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">get_config</span><span·class="p"·data-group-id="1441648188-8">(</span><span·class="p"·data-group-id="1441648188-9">{</span><span·class="ss">unix</span><span·class="p">,</span><span·class="ss">telnet</span><span·class="p"·data-group-id="1441648188-9">}</span><span·class="p">,</span><span·class="n">Default[·...·truncated·by·diffoscope;·len:·48,·SHA:·9dd106b2703c0aeed815dc9c30ac4f51ab601017eafc5bedc3748bbb776f8ba6·...·]-8">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">IpAddr</span><span·class="w"> |
| 1926 | </span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">get_config</span><span·class="p"·data-group-id="1 | 1926 | </span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">get_config</span><span·class="p"·data-group-id="1441648188-10">(</span><span·class="p"·data-group-id="1441648188-11">{</span><span·class="ss">unix</span><span·class="p">,</span><span·class="ss">user</span><span·class="p">,</span><span·class="ss">username</span><span·class="p"·data-group-id="1441648188-11[·...·truncated·by·diffoscope;·len:·105,·SHA:·8dae0d0719d9b0098db8d9b01eecf43b3b5d88c3bdc2fa7399925cd60576cf3a·...·]-10">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Username</span><span·class="w"> |
| 1927 | </span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">get_config</span><span·class="p"·data-group-id="1 | 1927 | </span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">get_config</span><span·class="p"·data-group-id="1441648188-12">(</span><span·class="p"·data-group-id="1441648188-13">{</span><span·class="ss">unix</span><span·class="p">,</span><span·class="ss">ftp</span><span·class="p"·data-group-id="1441648188-13">}</span><span·class="p">,</span><span·class="n">Default[·...·truncated·by·diffoscope;·len:·48,·SHA:·9dd106b2703c0aeed815dc9c30ac4f51ab601017eafc5bedc3748bbb776f8ba6·...·]-12">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Default</span><span·class="w"> |
| 1928 | </span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">get_config</span><span·class="p"·data-group-id="1 | 1928 | </span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">get_config</span><span·class="p"·data-group-id="1441648188-14">(</span><span·class="ss">unknownkey</span><span·class="p">,</span><span·class="n">Default</span><span·class="p"·data-group-id="1441648188-14">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Default</span></code></pre><p>If·a·configuration·variable·key·has·been·associated·with·a·name·(by |
| 1929 | <a·href="#require/2"><code·class="inline">ct:require/2</code></a>·or·a·<code·class="inline">require</code>·statement),·the·name·can·be·used | 1929 | <a·href="#require/2"><code·class="inline">ct:require/2</code></a>·or·a·<code·class="inline">require</code>·statement),·the·name·can·be·used |
| 1930 | instead·of·the·key·to·read·the·value:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">require</span><span·class="p"·data-group-id=" | 1930 | instead·of·the·key·to·read·the·value:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">require</span><span·class="p"·data-group-id="4686141216-1">(</span><span·class="ss">myuser</span><span·class="p">,</span><span·class="p"·data-group-id="4686141216-2">{</span><span·class="ss">unix</span><span·class="p">,</span><span·class="ss">user</span><span·class="p"·data-group-id="4686141216-2">}<[·...·truncated·by·diffoscope;·len:·47,·SHA:·cb5bb61573f31d02a8c753560f2744801bb936853d5ef292bfd00c2c591fd2cd·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="p">.</span><span·class="w"> |
| 1931 | </span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">get_config</span><span·class="p"·data-group-id=" | 1931 | </span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">get_config</span><span·class="p"·data-group-id="4686141216-3">(</span><span·class="ss">myuser</span><span·class="p">,</span><span·class="n">Default</span><span·class="p"·data-group-id="4686141216-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·507,·SHA:·34084f4fca90a162e893e725046ea07b80761ba6f2dcce8302a567d775f1b3db·...·]-4">]</span></code></pre><p>If·a·configuration·variable·is·defined·in·multiple·files,·use·option·<code·class="inline">all</code>·to |
| 1932 | access·all·possible·values.·The·values·are·returned·in·a·list.·The·order·of·the | 1932 | access·all·possible·values.·The·values·are·returned·in·a·list.·The·order·of·the |
| 1933 | elements·corresponds·to·the·order·that·the·configuration·files·were·specified·at | 1933 | elements·corresponds·to·the·order·that·the·configuration·files·were·specified·at |
| 1934 | startup.</p><p>If·configuration·elements·(key-value·tuples)·are·to·be·returned·as·result | 1934 | startup.</p><p>If·configuration·elements·(key-value·tuples)·are·to·be·returned·as·result |
| 1935 | instead·of·values,·use·option·<code·class="inline">element</code>.·The·returned·elements·are·then·on·the | 1935 | instead·of·values,·use·option·<code·class="inline">element</code>.·The·returned·elements·are·then·on·the |
| 1936 | form·<code·class="inline">{Required,Value}</code>.</p><p>See·also·<a·href="#get_config/1"><code·class="inline">ct:get_config/1</code></a>, | 1936 | form·<code·class="inline">{Required,Value}</code>.</p><p>See·also·<a·href="#get_config/1"><code·class="inline">ct:get_config/1</code></a>, |
| 1937 | <a·href="#get_config/2"><code·class="inline">ct:get_config/2</code></a>,·<a·href="#require/1"><code·class="inline">ct:require/1</code></a>, | 1937 | <a·href="#get_config/2"><code·class="inline">ct:get_config/2</code></a>,·<a·href="#require/1"><code·class="inline">ct:require/1</code></a>, |
| 1938 | <a·href="#require/2"><code·class="inline">ct:require/2</code></a>.</p> | 1938 | <a·href="#require/2"><code·class="inline">ct:require/2</code></a>.</p> |
| Offset 1962, 15 lines modified | Offset 1962, 15 lines modified | ||
| 1962 | ······<div·class="specs"> | 1962 | ······<div·class="specs"> |
| 1963 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·get_event_mgr_ref()·->·EvMgrRef·when·EvMgrRef·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:atom/0">atom</a>().</pre> | 1963 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·get_event_mgr_ref()·->·EvMgrRef·when·EvMgrRef·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:atom/0">atom</a>().</pre> |
| 1964 | ······</div> | 1964 | ······</div> |
| 1965 | <p>Gets·a·reference·to·the·<code·class="inline">Common·Test</code>·event·manager.·The·reference·can·be·used | 1965 | <p>Gets·a·reference·to·the·<code·class="inline">Common·Test</code>·event·manager.·The·reference·can·be·used |
| 1966 | to,·for·example,·add·a·user-specific·event·handler·while·tests·are·running.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">gen_event</span><span·class="p">:</span><span·class="nf">add_handler</span><span·class="p"·data-group-id=" | 1966 | to,·for·example,·add·a·user-specific·event·handler·while·tests·are·running.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">gen_event</span><span·class="p">:</span><span·class="nf">add_handler</span><span·class="p"·data-group-id="7095396939-1">(</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">get_event_mgr_ref</span><span·class="p"·data-group-id="7095396939-2">(</span><span·class="p"·data-group-id="7095396939-2">)</span><span·class="p">,</span><span·class="[·...·truncated·by·diffoscope;·len:·237,·SHA:·45f6c76639a8fbaa80c4298b286da4d33b0728b6940c10065742f33c7315dcd5·...·]-1">)</span></code></pre> |
| 1967 | ··</section> | 1967 | ··</section> |
| 1968 | </section> | 1968 | </section> |
| 1969 | <section·class="detail"·id="get_progname/0"> | 1969 | <section·class="detail"·id="get_progname/0"> |
| 1970 | ··<div·class="detail-header"> | 1970 | ··<div·class="detail-header"> |
| 1971 | ····<a·href="#get_progname/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1971 | ····<a·href="#get_progname/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1972 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1972 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 2235, 15 lines modified | Offset 2235, 15 lines modified | ||
| 2235 | ·····················KeyOrFile·::·{key,·Key}·|·{file,·KeyFile}, | 2235 | ·····················KeyOrFile·::·{key,·Key}·|·{file,·KeyFile}, |
| 2236 | ·····················Key·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>(), | 2236 | ·····················Key·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>(), |
| 2237 | ·····················KeyFile·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>(), | 2237 | ·····················KeyFile·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>(), |
| 2238 | ·····················Reason·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> | 2238 | ·····················Reason·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 2239 | ······</div> | 2239 | ······</div> |
| 2240 | <p>Installs·configuration·files·and·event·handlers.</p><p>Run·this·function·once·before·the·first·test.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">install</span><span·class="p"·data-group-id=" | 2240 | <p>Installs·configuration·files·and·event·handlers.</p><p>Run·this·function·once·before·the·first·test.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">install</span><span·class="p"·data-group-id="5799690363-1">(</span><span·class="p"·data-group-id="5799690363-2">[</span><span·class="p"·data-group-id="5799690363-3">{</span><span·class="ss">config</span><span·class="p">,</span><span·class="p"·data-group-id="5799690363-4">[</span><span·class="s">"[·...·truncated·by·diffoscope;·len:·302,·SHA:·1bd35fac0d5d2a916bce83d7d8a09a27f524553d597e203b890062584c42ce60·...·]3-1">)</span></code></pre><p>This·function·is·automatically·run·by·program·<code·class="inline">ct_run</code>.</p> |
| 2241 | ··</section> | 2241 | ··</section> |
| 2242 | </section> | 2242 | </section> |
| 2243 | <section·class="detail"·id="listenv/1"> | 2243 | <section·class="detail"·id="listenv/1"> |
| 2244 | ··<div·class="detail-header"> | 2244 | ··<div·class="detail-header"> |
| 2245 | ····<a·href="#listenv/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 2245 | ····<a·href="#listenv/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 2246 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 2246 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 3026, 15 lines modified | Offset 3026, 15 lines modified | ||
| 3026 | ·····················SubKey·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:atom/0">atom</a>(), | 3026 | ·····················SubKey·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:atom/0">atom</a>(), |
| 3027 | ·····················Reason·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> | 3027 | ·····················Reason·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 3028 | ······</div> | 3028 | ······</div> |
| 3029 | <p>Checks·if·the·required·configuration·is·available.·Arbitrarily·deep·tuples·can | 3029 | <p>Checks·if·the·required·configuration·is·available.·Arbitrarily·deep·tuples·can |
| 3030 | be·specified·as·<code·class="inline">Required</code>.·Only·the·last·element·of·the·tuple·can·be·a·list·of | 3030 | be·specified·as·<code·class="inline">Required</code>.·Only·the·last·element·of·the·tuple·can·be·a·list·of |
| 3031 | <code·class="inline">SubKey</code>s.</p><p><em>Example·1.</em>·Require·the·variable·<code·class="inline">myvar</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">require</span><span·class="p"·data-group-id=" | 3031 | <code·class="inline">SubKey</code>s.</p><p><em>Example·1.</em>·Require·the·variable·<code·class="inline">myvar</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">require</span><span·class="p"·data-group-id="8914998829-1">(</span><span·class="ss">myvar</span><span·class="p"·data-group-id="8914998829-1">)</span><span·class="p">.</span></code></pre><p>In·this·case·the·configuration·file·must·at·least·contain:</p><pre><code·class="makeup·erlang"·translate="no"><s[·...·truncated·by·diffoscope;·len:·3488,·SHA:·aca7d1455d525c0a0cf895b16b5aa0d6b9b05d06adb13bc4e1147f4452020ed7·...·]-1">}</span><span·class="p">.</span></code></pre><p>See·also·<a·href="#get_config/1"><code·class="inline">ct:get_config/1</code></a>, |
| 3032 | <a·href="#get_config/2"><code·class="inline">ct:get_config/2</code></a>,·<a·href="#get_config/3"><code·class="inline">ct:get_config/3</code></a>, | 3032 | <a·href="#get_config/2"><code·class="inline">ct:get_config/2</code></a>,·<a·href="#get_config/3"><code·class="inline">ct:get_config/3</code></a>, |
| 3033 | <a·href="#require/2"><code·class="inline">ct:require/2</code></a>.</p> | 3033 | <a·href="#require/2"><code·class="inline">ct:require/2</code></a>.</p> |
| 3034 | ··</section> | 3034 | ··</section> |
| 3035 | </section> | 3035 | </section> |
| 3036 | <section·class="detail"·id="require/2"> | 3036 | <section·class="detail"·id="require/2"> |
| 3037 | ··<div·class="detail-header"> | 3037 | ··<div·class="detail-header"> |
| Offset 3066, 16 lines modified | Offset 3066, 16 lines modified | ||
| 3066 | <p>Checks·if·the·required·configuration·is·available·and·gives·it·a·name.·The | 3066 | <p>Checks·if·the·required·configuration·is·available·and·gives·it·a·name.·The |
| 3067 | semantics·for·<code·class="inline">Required</code>·is·the·same·as·in·<a·href="#require/1"><code·class="inline">ct:require/1</code></a>·except | 3067 | semantics·for·<code·class="inline">Required</code>·is·the·same·as·in·<a·href="#require/1"><code·class="inline">ct:require/1</code></a>·except |
| 3068 | that·a·list·of·<code·class="inline">SubKey</code>s·cannot·be·specified.</p><p>If·the·requested·data·is·available,·the·subentry·is·associated·with·<code·class="inline">Name</code>·so | 3068 | that·a·list·of·<code·class="inline">SubKey</code>s·cannot·be·specified.</p><p>If·the·requested·data·is·available,·the·subentry·is·associated·with·<code·class="inline">Name</code>·so |
| 3069 | that·the·value·of·the·element·can·be·read·with | 3069 | that·the·value·of·the·element·can·be·read·with |
| 3070 | <a·href="#get_config/1"><code·class="inline">ct:get_config/1,2</code></a>·provided·<code·class="inline">Name</code>·is·used·instead·of·the | 3070 | <a·href="#get_config/1"><code·class="inline">ct:get_config/1,2</code></a>·provided·<code·class="inline">Name</code>·is·used·instead·of·the |
| 3071 | whole·<code·class="inline">Required</code>·term.</p><p><em>Example:</em></p><p>Require·one·node·with·a·Telnet·connection·and·an·FTP·connection.·Name·the·node | 3071 | whole·<code·class="inline">Required</code>·term.</p><p><em>Example:</em></p><p>Require·one·node·with·a·Telnet·connection·and·an·FTP·connection.·Name·the·node |
| 3072 | <code·class="inline">a</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">require</span><span·class="p"·data-group-id="7919117605-1">(</span><span·class="ss">a</span><span·class="p">,</span><span·class="p"·data-group-id="7919117605-2">{</span><span·class="ss">machine</span><span·class="p">,</span><span·class="nb">node</span><span·class="p"·data-group-id="7919117605-2">}</span><span·class="p"·data-group-id="7919117605-1">)</span><span·class="p">.</span></code></pre><p>All·references·to·this·node·can·then·use·the·node·name.·For·example,·a·file·over | ||
| 3073 | 3072 | <code·class="inline">a</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">require</[·...·truncated·by·diffoscope;·len:·469,·SHA:·b5f6cd964e65d4b9775dfc9bfa74ac07d73a9d01c067eab1866aa02310d045d7·...·] | |
| 3073 | FTP·is·fetched·like·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">ftp_get</span><span·class="p"·data-group-id="3846728542-1">(</span><span·class="ss">a</span><span·class="p">,</span><span·class="n">RemoteFile</span><span·class="p">,</span><span·class="n">LocalFile</span><span·class="p"·data-group-id="3846728542-1">)</span><span·class="p">.</span></code></pre><p>For·this·to·work,·the·configuration·file·must·at·least·contain:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="7928339821-1">{</span><span·class="ss">machine</span><span·class="p">,</span><span·class="p"·data-group-id="7928339821-2">[</span><span·class="p"·data-group-id="7928339821-3">{</span><span·class="nb">node</span><span·class="p">,</span><span·class="p"·data-group-id="7928339821-4">[</span><span·class="p"·data-group-id="7928339821-5">{</span><span·class="ss">telnet</span><span·class="p">,</span><span·class="n">IpAddr</span><span·class="p"·data-group-id="7928339821-5">}</span><span·class="p">,</span><span·class="p"·data-group-id="7928339821-6">{</span><span·class="ss">ftp</span><span·class="p">,</span><span·class="n">IpAddr</span><span·class="p"·data-group-id="7928339821-6">}</span><span·class="p"·data-group-id="7928339821-4">]</span><span·class="p"·data-group-id="7928339821-3">}</span><span·class="p"·data-group-id="7928339821-2">]</span><span·class="p"·data-group-id="7928339821-1">}</span><span·class="p">.</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>The·behavior·of·this·function·changed·radically·in·<code·class="inline">Common·Test</code>·1.6.2.·To | ||
| 3074 | keep·some·backwards·compatibility,·it·is·still·possible·to·do: | 3074 | keep·some·backwards·compatibility,·it·is·still·possible·to·do: |
| 3075 | <code·class="inline">ct:require(a,{node,[telnet,ftp]}).</code>·This·associates·the·name·<code·class="inline">a</code>·with·the | 3075 | <code·class="inline">ct:require(a,{node,[telnet,ftp]}).</code>·This·associates·the·name·<code·class="inline">a</code>·with·the |
| 3076 | top-level·<code·class="inline">node</code>·entry.·For·this·to·work,·the·configuration·file·must·at·least | 3076 | top-level·<code·class="inline">node</code>·entry.·For·this·to·work,·the·configuration·file·must·at·least |
| 3077 | contain:·<code·class="inline">{node,[{telnet,IpAddr},{ftp,IpAddr}]}.</code></p></section><p>See·also·<a·href="#get_config/1"><code·class="inline">ct:get_config/1</code></a>, | 3077 | contain:·<code·class="inline">{node,[{telnet,IpAddr},{ftp,IpAddr}]}.</code></p></section><p>See·also·<a·href="#get_config/1"><code·class="inline">ct:get_config/1</code></a>, |
| 3078 | <a·href="#get_config/2"><code·class="inline">ct:get_config/2</code></a>,·<a·href="#get_config/3"><code·class="inline">ct:get_config/3</code></a>, | 3078 | <a·href="#get_config/2"><code·class="inline">ct:get_config/2</code></a>,·<a·href="#get_config/3"><code·class="inline">ct:get_config/3</code></a>, |
| 3079 | <a·href="#require/1"><code·class="inline">ct:require/1</code></a>.</p> | 3079 | <a·href="#require/1"><code·class="inline">ct:require/1</code></a>.</p> |
| 3080 | ··</section> | 3080 | ··</section> |
| Offset 3426, 20 lines modified | Offset 3426, 20 lines modified | ||
| 3426 | ······</div> | 3426 | ······</div> |
| 3427 | <p>Starts·<code·class="inline">Common·Test</code>·in·interactive·mode.</p><p>From·this·mode,·all·test·case·support·functions·can·be·executed·directly·from | 3427 | <p>Starts·<code·class="inline">Common·Test</code>·in·interactive·mode.</p><p>From·this·mode,·all·test·case·support·functions·can·be·executed·directly·from |
| 3428 | the·Erlang·shell.·The·interactive·mode·can·also·be·started·from·the·OS·command | 3428 | the·Erlang·shell.·The·interactive·mode·can·also·be·started·from·the·OS·command |
| 3429 | line·with·<code·class="inline">ct_run·-shell·[-config·File...]</code>.</p><p>If·any·functions·(for·example,·Telnet·or·FTP)·using·"required·configuration | 3429 | line·with·<code·class="inline">ct_run·-shell·[-config·File...]</code>.</p><p>If·any·functions·(for·example,·Telnet·or·FTP)·using·"required·configuration |
| 3430 | data"·are·to·be·called·from·the·Erlang·shell,·configuration·data·must·first·be | 3430 | data"·are·to·be·called·from·the·Erlang·shell,·configuration·data·must·first·be |
| 3431 | required·with·<a·href="#require/2"><code·class="inline">ct:require/2</code></a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">require</span><span·class="p"·data-group-id=" | 3431 | required·with·<a·href="#require/2"><code·class="inline">ct:require/2</code></a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">require</span><span·class="p"·data-group-id="9382764865-1">(</span><span·class="ss">unix_telnet</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">unix</span><span·class="p"·data-group-id="9382764865-1">)</span><span·class="p">.</span><span·class="w"> |
| 3432 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 3432 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 3433 | >·</span><span·class="nc">ct_telnet</span><span·class="p">:</span><span·class="nf">open</span><span·class="p"·data-group-id=" | 3433 | >·</span><span·class="nc">ct_telnet</span><span·class="p">:</span><span·class="nf">open</span><span·class="p"·data-group-id="9382764865-2">(</span><span·class="ss">unix_telnet</span><span·class="p"·data-group-id="9382764865-2">)</span><span·class="p">.</span><span·class="w"> |
| 3434 | </span><span·class="p"·data-group-id=" | 3434 | </span><span·class="p"·data-group-id="9382764865-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.105</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="9382764865-3">}</span><span·class="gp·unselectable"> |
| 3435 | >·</span><span·class="nc">ct_telnet</span><span·class="p">:</span><span·class="nf">cmd</span><span·class="p"·data-group-id=" | 3435 | >·</span><span·class="nc">ct_telnet</span><span·class="p">:</span><span·class="nf">cmd</span><span·class="p"·data-group-id="9382764865-4">(</span><span·class="ss">unix_telnet</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"ls·."</span><span·class="p"·data-group-id="9382764865-4">)</span><span·class="p">.</span><span·class="w"> |
| 3436 | </span><span·class="p"·data-group-id=" | 3436 | </span><span·class="p"·data-group-id="9382764865-5">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="9382764865-6">[</span><span·class="s">"ls"</span><span·class="p">,</span><span·class="s">"file1··..."</span><span·class="p">,</span><[·...·truncated·by·diffoscope;·len:·165,·SHA:·01cf37c1dacd318ce1261fbfcbf9c099a4bc3d74495e5576ca8855a643e62937·...·]-5">}</span></code></pre> |
| 3437 | ··</section> | 3437 | ··</section> |
| 3438 | </section> | 3438 | </section> |
| 3439 | <section·class="detail"·id="step/3"> | 3439 | <section·class="detail"·id="step/3"> |
| 3440 | ··<div·class="detail-header"> | 3440 | ··<div·class="detail-header"> |
| 3441 | ····<a·href="#step/3"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 3441 | ····<a·href="#step/3"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 3442 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 3442 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 567 | ·················LocalFile·::·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#t:filename/0">file:filename</a>(), | 567 | ·················LocalFile·::·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#t:filename/0">file:filename</a>(), |
| 568 | ·················RemoteFile·::·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#t:filename/0">file:filename</a>(), | 568 | ·················RemoteFile·::·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#t:filename/0">file:filename</a>(), |
| 569 | ·················Reason·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> | 569 | ·················Reason·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 570 | ······</div> | 570 | ······</div> |
| 571 | <p>Opens·an·FTP·connection·and·sends·a·file·to·the·remote·host.</p><p><code·class="inline">LocalFile</code>·and·<code·class="inline">RemoteFile</code>·must·be·absolute·paths.</p><p>If·the·target·host·is·a·"special"·node,·the·FTP·address·must·be·specified·in·the | 571 | <p>Opens·an·FTP·connection·and·sends·a·file·to·the·remote·host.</p><p><code·class="inline">LocalFile</code>·and·<code·class="inline">RemoteFile</code>·must·be·absolute·paths.</p><p>If·the·target·host·is·a·"special"·node,·the·FTP·address·must·be·specified·in·the |
| 572 | configuration·file·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="7404156898-1">{</span><span·class="nb">node</span><span·class="p">,</span><span·class="p"·data-group-id="7404156898-2">[</span><span·class="p"·data-group-id="7404156898-3">{</span><span·class="ss">ftp</span><span·class="p">,</span><span·class="n">IpAddr</span><span·class="p"·data-group-id="7404156898-3">}</span><span·class="p"·data-group-id="7404156898-2">]</span><span·class="p"·data-group-id="7404156898-1">}</span><span·class="p">.</span></code></pre><p>If·the·target·host·is·something·else,·for·example,·a·UNIX·host,·the | ||
| 573 | configuration·file· | 572 | configuration·file·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="5526084888-1">{</span><span·class="nb">node</span><span·class="p">,</span><span·class="p"·data-group-id="5526084888-2">[</span><span·class="p"·data-group-id="5526[·...·truncated·by·diffoscope;·len:·364,·SHA:·56844711d61d3b5fecc260afe9c02ff3822c9d7840d6e810e7649c7db42b4622·...·] |
| 573 | configuration·file·must·also·include·the·username·and·password·(both·strings):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="4300261165-1">{</span><span·class="ss">unix</span><span·class="p">,</span><span·class="p"·data-group-id="4300261165-2">[</span><span·class="p"·data-group-id="4300261165-3">{</span><span·class="ss">ftp</span><span·class="p">,</span><span·class="n">IpAddr</span><span·class="p"·data-group-id="4300261165-3">}</span><span·class="p">,</span><span·class="w"> | ||
| 574 | ·······</span><span·class="p"·data-group-id=" | 574 | ·······</span><span·class="p"·data-group-id="4300261165-4">{</span><span·class="ss">username</span><span·class="p">,</span><span·class="n">Username</span><span·class="p"·data-group-id="4300261165-4">}</span><span·class="p">,</span><span·class="w"> |
| 575 | ·······</span><span·class="p"·data-group-id=" | 575 | ·······</span><span·class="p"·data-group-id="4300261165-5">{</span><span·class="ss">password</span><span·class="p">,</span><span·class="n">Password</span><span·class="p"·data-group-id="4300261165-5">}</span><span·class="p"·data-group-id="4300261165-2">]</span><span·class="p"·data-group-id="4300261165-1">}</span><span·class="p">.</span></code></pre><p>See·also·<a·href="ct.html#require/2"><code·class="inline">ct:require/2</code></a>.</p> |
| 576 | ··</section> | 576 | ··</section> |
| 577 | </section> | 577 | </section> |
| 578 | <section·class="detail"·id="recv/2"> | 578 | <section·class="detail"·id="recv/2"> |
| 579 | ··<div·class="detail-header"> | 579 | ··<div·class="detail-header"> |
| 580 | ····<a·href="#recv/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 580 | ····<a·href="#recv/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 581 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 581 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 249, 20 lines modified | Offset 249, 20 lines modified | ||
| 249 | </h3> | 249 | </h3> |
| 250 | <p>In·a·CTH,·the·behavior·can·be·hooked·in·before·the·following·functions:</p><ul><li><a·href="ct_suite.html#c:init_per_suite/1"><code·class="inline">init_per_suite</code></a></li><li><a·href="ct_suite.html#c:init_per_group/2"><code·class="inline">init_per_group</code></a></li><li><a·href="ct_suite.html#c:init_per_testcase/2"><code·class="inline">init_per_testcase</code></a></li><li><a·href="ct_suite.html#c:end_per_testcase/2"><code·class="inline">end_per_testcase</code></a></li><li><a·href="ct_suite.html#c:end_per_group/2"><code·class="inline">end_per_group</code></a></li><li><a·href="ct_suite.html#c:end_per_suite/1"><code·class="inline">end_per_suite</code></a></li></ul><p>This·is·done·in·the·CTH·functions·called·<code·class="inline">pre_<name·of·function></code>.·These | 250 | <p>In·a·CTH,·the·behavior·can·be·hooked·in·before·the·following·functions:</p><ul><li><a·href="ct_suite.html#c:init_per_suite/1"><code·class="inline">init_per_suite</code></a></li><li><a·href="ct_suite.html#c:init_per_group/2"><code·class="inline">init_per_group</code></a></li><li><a·href="ct_suite.html#c:init_per_testcase/2"><code·class="inline">init_per_testcase</code></a></li><li><a·href="ct_suite.html#c:end_per_testcase/2"><code·class="inline">end_per_testcase</code></a></li><li><a·href="ct_suite.html#c:end_per_group/2"><code·class="inline">end_per_group</code></a></li><li><a·href="ct_suite.html#c:end_per_suite/1"><code·class="inline">end_per_suite</code></a></li></ul><p>This·is·done·in·the·CTH·functions·called·<code·class="inline">pre_<name·of·function></code>.·These |
| 251 | functions·take·the·arguments·<code·class="inline">SuiteName</code>,·<code·class="inline">Name</code>·(group·or·test·case·name,·if | 251 | functions·take·the·arguments·<code·class="inline">SuiteName</code>,·<code·class="inline">Name</code>·(group·or·test·case·name,·if |
| 252 | applicable),·<code·class="inline">Config</code>,·and·<code·class="inline">CTHState</code>.·The·return·value·of·the·CTH·function·is | 252 | applicable),·<code·class="inline">Config</code>,·and·<code·class="inline">CTHState</code>.·The·return·value·of·the·CTH·function·is |
| 253 | always·a·combination·of·a·result·for·the·suite/group/test·and·an·updated | 253 | always·a·combination·of·a·result·for·the·suite/group/test·and·an·updated |
| 254 | <code·class="inline">CTHState</code>.</p><p>To·let·the·test·suite·continue·on·executing,·return·the·configuration·list·that | 254 | <code·class="inline">CTHState</code>.</p><p>To·let·the·test·suite·continue·on·executing,·return·the·configuration·list·that |
| 255 | you·want·the·test·to·use·as·the·result.</p><p>All·pre·hooks,·except·<code·class="inline">pre_end_per_testcase/4</code>,·can·skip·or·fail·the·test·by | 255 | you·want·the·test·to·use·as·the·result.</p><p>All·pre·hooks,·except·<code·class="inline">pre_end_per_testcase/4</code>,·can·skip·or·fail·the·test·by |
| 256 | returning·a·tuple·with·<code·class="inline">skip</code>·or·<code·class="inline">fail</code>,·and·a·reason·as·the·result.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">pre_init_per_suite</span><span·class="p"·data-group-id="6 | 256 | returning·a·tuple·with·<code·class="inline">skip</code>·or·<code·class="inline">fail</code>,·and·a·reason·as·the·result.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">pre_init_per_suite</span><span·class="p"·data-group-id="6268845227-1">(</span><span·class="n">SuiteName</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Config</span><span·class="p">,</span><span·class="w">·</span><span·class="n">CTHState</span><span·class="p"·data-group-id="6268845227-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 257 | ··</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">db</span><span·class="p">:</span><span·class="nf">connect</span><span·class="p"·data-group-id="6 | 257 | ··</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">db</span><span·class="p">:</span><span·class="nf">connect</span><span·class="p"·data-group-id="6268845227-2">(</span><span·class="p"·data-group-id="6268845227-2">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 258 | ····</span><span·class="p"·data-group-id="6 | 258 | ····</span><span·class="p"·data-group-id="6268845227-3">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="p">_</span><span·class="n">Reason</span><span·class="p"·data-group-id="6268845227-3">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 259 | ······</span><span·class="p"·data-group-id="6 | 259 | ······</span><span·class="p"·data-group-id="6268845227-4">{</span><span·class="p"·data-group-id="6268845227-5">{</span><span·class="ss">fail</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"Could·not·connect·to·DB"</span><span·class="p"·data-group-id="6268845227-5">}</[·...·truncated·by·diffoscope;·len:·125,·SHA:·63b05a44482c1cf8699554baf2f5522e64bd6af8bcf220cab398668f0e272689·...·]-4">}</span><span·class="p">;</span><span·class="w"> |
| 260 | ····</span><span·class="p"·data-group-id="6 | 260 | ····</span><span·class="p"·data-group-id="6268845227-6">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Handle</span><span·class="p"·data-group-id="6268845227-6">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 261 | ······</span><span·class="p"·data-group-id="6 | 261 | ······</span><span·class="p"·data-group-id="6268845227-7">{</span><span·class="p"·data-group-id="6268845227-8">[</span><span·class="p"·data-group-id="6268845227-9">{</span><span·class="ss">db_handle</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Handle</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·648,·SHA:·e042e0cd20d1c70c4a043b3da895f2a76edebdcc8a38175338eb3d33707753fa·...·]-7">}</span><span·class="w"> |
| 262 | ··</span><span·class="k">end</span><span·class="p">.</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>If·you·use·multiple·CTHs,·the·first·part·of·the·return·tuple·is·used·as·input | 262 | ··</span><span·class="k">end</span><span·class="p">.</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>If·you·use·multiple·CTHs,·the·first·part·of·the·return·tuple·is·used·as·input |
| 263 | for·the·next·CTH.·So·in·the·previous·example·the·next·CTH·can·get | 263 | for·the·next·CTH.·So·in·the·previous·example·the·next·CTH·can·get |
| 264 | <code·class="inline">{fail,Reason}</code>·as·the·second·parameter.·If·you·have·many·CTHs·interacting,·do | 264 | <code·class="inline">{fail,Reason}</code>·as·the·second·parameter.·If·you·have·many·CTHs·interacting,·do |
| 265 | not·let·each·CTH·return·<code·class="inline">fail</code>·or·<code·class="inline">skip</code>.·Instead,·return·that·an·action·is·to | 265 | not·let·each·CTH·return·<code·class="inline">fail</code>·or·<code·class="inline">skip</code>.·Instead,·return·that·an·action·is·to |
| 266 | be·taken·through·the·<code·class="inline">Config</code>·list·and·implement·a·CTH·that,·at·the·end,·takes | 266 | be·taken·through·the·<code·class="inline">Config</code>·list·and·implement·a·CTH·that,·at·the·end,·takes |
| 267 | the·correct·action.</p></section><p><a·href=""·id="post"></a></p><h3·id="post-hooks"·class="section-heading"> | 267 | the·correct·action.</p></section><p><a·href=""·id="post"></a></p><h3·id="post-hooks"·class="section-heading"> |
| 268 | ··<a·href="#post-hooks"·class="hover-link"> | 268 | ··<a·href="#post-hooks"·class="hover-link"> |
| Offset 276, 26 lines modified | Offset 276, 26 lines modified | ||
| 276 | same·<code·class="inline">Config</code>·as·the·testcase·is·called·with.·<code·class="inline">Return</code>·is·the·value·returned·by | 276 | same·<code·class="inline">Config</code>·as·the·testcase·is·called·with.·<code·class="inline">Return</code>·is·the·value·returned·by |
| 277 | the·testcase.·If·the·testcase·fails·by·crashing,·<code·class="inline">Return</code>·is | 277 | the·testcase.·If·the·testcase·fails·by·crashing,·<code·class="inline">Return</code>·is |
| 278 | <code·class="inline">{'EXIT',{{Error,Reason},Stacktrace}}</code>.</p><p>The·return·value·of·the·CTH·function·is·always·a·combination·of·a·result·for·the | 278 | <code·class="inline">{'EXIT',{{Error,Reason},Stacktrace}}</code>.</p><p>The·return·value·of·the·CTH·function·is·always·a·combination·of·a·result·for·the |
| 279 | suite/group/test·and·an·updated·<code·class="inline">CTHState</code>.·If·you·do·not·want·the·callback·to | 279 | suite/group/test·and·an·updated·<code·class="inline">CTHState</code>.·If·you·do·not·want·the·callback·to |
| 280 | affect·the·outcome·of·the·test,·return·the·<code·class="inline">Return</code>·data·as·it·is·given·to·the | 280 | affect·the·outcome·of·the·test,·return·the·<code·class="inline">Return</code>·data·as·it·is·given·to·the |
| 281 | CTH.·You·can·also·modify·the·test·result.·By·returning·the·<code·class="inline">Config</code>·list·with | 281 | CTH.·You·can·also·modify·the·test·result.·By·returning·the·<code·class="inline">Config</code>·list·with |
| 282 | element·<code·class="inline">tc_status</code>·removed,·you·can·recover·from·a·test·failure.·As·in·all·the | 282 | element·<code·class="inline">tc_status</code>·removed,·you·can·recover·from·a·test·failure.·As·in·all·the |
| 283 | pre·hooks,·it·is·also·possible·to·fail/skip·the·test·case·in·the·post·hook.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">post_end_per_testcase</span><span·class="p"·data-group-id=" | 283 | pre·hooks,·it·is·also·possible·to·fail/skip·the·test·case·in·the·post·hook.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">post_end_per_testcase</span><span·class="p"·data-group-id="5702149459-1">(</span><span·class="p">_</span><span·class="n">Suite</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">TC</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Config</span><span·cl[·...·truncated·by·diffoscope;·len:·505,·SHA:·7026eaa004cd9d63ae50f70285b5a0ceb5436ae4fe66436d6c8a45db0d5caf8d·...·]9-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 284 | ··</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">db</span><span·class="p">:</span><span·class="nf">check_consistency</span><span·class="p"·data-group-id=" | 284 | ··</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">db</span><span·class="p">:</span><span·class="nf">check_consistency</span><span·class="p"·data-group-id="5702149459-4">(</span><span·class="p"·data-group-id="5702149459-4">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 285 | ····</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 285 | ····</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 286 | ······</span><span·class="c1">%%·DB·is·good,·pass·the·test.</span><span·class="w"> | 286 | ······</span><span·class="c1">%%·DB·is·good,·pass·the·test.</span><span·class="w"> |
| 287 | ······</span><span·class="p"·data-group-id=" | 287 | ······</span><span·class="p"·data-group-id="5702149459-5">{</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">delete</span><span·class="p"·data-group-id="5702149459-6">(</span><span·class="ss">tc_status</span><span·class="p">,</span><span·class="w">·</span><span·class="[·...·truncated·by·diffoscope;·len:·188,·SHA:·f73d55f7a3a0520ba4d8ee33084cf42fd48e45b44995cba0120335c5a27d837c·...·]9-5">}</span><span·class="p">;</span><span·class="w"> |
| 288 | ····</span><span·class="ss">false</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 288 | ····</span><span·class="ss">false</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 289 | ······</span><span·class="c1">%%·DB·is·not·good,·mark·as·skipped·instead·of·failing</span><span·class="w"> | 289 | ······</span><span·class="c1">%%·DB·is·not·good,·mark·as·skipped·instead·of·failing</span><span·class="w"> |
| 290 | ······</span><span·class="p"·data-group-id=" | 290 | ······</span><span·class="p"·data-group-id="5702149459-7">{</span><span·class="p"·data-group-id="5702149459-8">{</span><span·class="ss">skip</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"DB·is·inconsistent!"</span><span·class="p"·data-group-id="5702149459-8">}</spa[·...·truncated·by·diffoscope;·len:·121,·SHA:·8babf9755f75168bef8a9b1bdfc9531fc239e0a1b4613af1dbfb9c87222ad818·...·]9-7">}</span><span·class="w"> |
| 291 | ··</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> | 291 | ··</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> |
| 292 | </span><span·class="nf">post_end_per_testcase</span><span·class="p"·data-group-id=" | 292 | </span><span·class="nf">post_end_per_testcase</span><span·class="p"·data-group-id="5702149459-9">(</span><span·class="p">_</span><span·class="n">Suite</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">TC</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Config</span><span·cl[·...·truncated·by·diffoscope;·len:·188,·SHA:·500bb035cd5d5a4033d379ff3a62f66c1c991f3082ada65e772ba1619360f171·...·]9-9">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 293 | ··</span><span·class="c1">%%·Do·nothing·if·tc·does·not·crash.</span><span·class="w"> | 293 | ··</span><span·class="c1">%%·Do·nothing·if·tc·does·not·crash.</span><span·class="w"> |
| 294 | ··</span><span·class="p"·data-group-id=" | 294 | ··</span><span·class="p"·data-group-id="5702149459-10">{</span><span·class="n">Return</span><span·class="p">,</span><span·class="w">·</span><span·class="n">CTHState</span><span·class="p"·data-group-id="5702149459-10">}</span><span·class="p">.</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Do·recover·from·a·testcase·failure·using·CTHs·only·a·last·resort.·If·used |
| 295 | wrongly,·it·can·be·very·difficult·to·determine·which·tests·that·pass·or·fail | 295 | wrongly,·it·can·be·very·difficult·to·determine·which·tests·that·pass·or·fail |
| 296 | in·a·test·run.</p></section><h3·id="skip-and-fail-hooks"·class="section-heading"> | 296 | in·a·test·run.</p></section><h3·id="skip-and-fail-hooks"·class="section-heading"> |
| 297 | ··<a·href="#skip-and-fail-hooks"·class="hover-link"> | 297 | ··<a·href="#skip-and-fail-hooks"·class="hover-link"> |
| 298 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 298 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 299 | ··</a> | 299 | ··</a> |
| 300 | ··<span·class="text">Skip·and·Fail·Hooks</span> | 300 | ··<span·class="text">Skip·and·Fail·Hooks</span> |
| 301 | </h3> | 301 | </h3> |
| Offset 336, 88 lines modified | Offset 336, 88 lines modified | ||
| 336 | <p>The·following·CTH·logs·information·about·a·test·run·into·a·format·parseable·by | 336 | <p>The·following·CTH·logs·information·about·a·test·run·into·a·format·parseable·by |
| 337 | <a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#consult/1"><code·class="inline">file:consult/1</code></a>·(in·Kernel):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%%·Common·Test·Example·Common·Test·Hook·module.</span><span·class="w"> | 337 | <a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#consult/1"><code·class="inline">file:consult/1</code></a>·(in·Kernel):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%%·Common·Test·Example·Common·Test·Hook·module.</span><span·class="w"> |
| 338 | </span><span·class="c1">%%%</span><span·class="w"> | 338 | </span><span·class="c1">%%%</span><span·class="w"> |
| 339 | </span><span·class="c1">%%%·To·use·this·hook,·on·the·command·line:</span><span·class="w"> | 339 | </span><span·class="c1">%%%·To·use·this·hook,·on·the·command·line:</span><span·class="w"> |
| 340 | </span><span·class="c1">%%%·····ct_run·-suite·example_SUITE·-pa·.·-ct_hooks·example_cth</span><span·class="w"> | 340 | </span><span·class="c1">%%%·····ct_run·-suite·example_SUITE·-pa·.·-ct_hooks·example_cth</span><span·class="w"> |
| 341 | </span><span·class="c1">%%%</span><span·class="w"> | 341 | </span><span·class="c1">%%%</span><span·class="w"> |
| 342 | </span><span·class="c1">%%%·Note·`-pa·.`:·the·hook·beam·file·must·be·in·the·code·path·when·installing.</span><span·class="w"> | 342 | </span><span·class="c1">%%%·Note·`-pa·.`:·the·hook·beam·file·must·be·in·the·code·path·when·installing.</span><span·class="w"> |
| 343 | </span><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 343 | </span><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="6190203119-1">(</span><span·class="ss">example_cth</span><span·class="p"·data-group-id="6190203119-1">)</span><span·class="p">.</span><span·class="w"> |
| 344 | </span><span·class="c1">%%·Mandatory·Callbacks</span><span·class="w"> | 344 | </span><span·class="c1">%%·Mandatory·Callbacks</span><span·class="w"> |
| 345 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 345 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="6190203119-2">(</span><span·class="p"·data-group-id="6190203119-3">[</span><span·class="ss">init</span><span·class="p">/</span><span·class="mi">2</span><span·class="p"·data-group-id="6190203119-3">]</span><span·class="p"·data-group-id="6190203119-2">)</span><span·class="p">.</span><span·class="w"> |
| 346 | </span><span·class="c1">%%·Optional·Callbacks</span><span·class="w"> | 346 | </span><span·class="c1">%%·Optional·Callbacks</span><span·class="w"> |
| 347 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 347 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="6190203119-4">(</span><span·class="p"·data-group-id="6190203119-5">[</span><span·class="ss">id</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id="6190203119-5">]</span><span·class="p"·data-group-id="6190203119-4">)</span><span·class="p">.</span><span·class="w"> |
| 348 | </span><span·class="w"> | 348 | </span><span·class="w"> |
| 349 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 349 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="6190203119-6">(</span><span·class="p"·data-group-id="6190203119-7">[</span><span·class="ss">pre_init_per_suite</span><span·class="p">/</span><span·class="mi">3</span><span·class="p"·data-group-id="6190203119-7">]</span><span·class="p"·data-group-id="619020[·...·truncated·by·diffoscope;·len:·4,·SHA:·2c7881a5e706e7ad13217ab8e9dc6da1f5f8e96e2c45ed0244437477d09432d2·...·]-6">)</span><span·class="p">.</span><span·class="w"> |
| 350 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 350 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="6190203119-8">(</span><span·class="p"·data-group-id="6190203119-9">[</span><span·class="ss">post_end_per_suite</span><span·class="p">/</span><span·class="mi">4</span><span·class="p"·data-group-id="6190203119-9">]</span><span·class="p"·data-group-id="619020[·...·truncated·by·diffoscope;·len:·4,·SHA:·2c7881a5e706e7ad13217ab8e9dc6da1f5f8e96e2c45ed0244437477d09432d2·...·]-8">)</span><span·class="p">.</span><span·class="w"> |
| 351 | </span><span·class="w"> | 351 | </span><span·class="w"> |
| 352 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 352 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="6190203119-10">(</span><span·class="p"·data-group-id="6190203119-11">[</span><span·class="ss">pre_init_per_testcase</span><span·class="p">/</span><span·class="mi">4</span><span·class="p"·data-group-id="6190203119-11">]</span><span·class="p"·data-group-id="[·...·truncated·by·diffoscope;·len:·10,·SHA:·c4ca6917dbab3496277ad4303a88aa8ca5ee135f4b9b138853fec9a0df8b5a16·...·]-10">)</span><span·class="p">.</span><span·class="w"> |
| 353 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 353 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="6190203119-12">(</span><span·class="p"·data-group-id="6190203119-13">[</span><span·class="ss">post_end_per_testcase</span><span·class="p">/</span><span·class="mi">5</span><span·class="p"·data-group-id="6190203119-13">]</span><span·class="p"·data-group-id="[·...·truncated·by·diffoscope;·len:·10,·SHA:·c4ca6917dbab3496277ad4303a88aa8ca5ee135f4b9b138853fec9a0df8b5a16·...·]-12">)</span><span·class="p">.</span><span·class="w"> |
| 354 | </span><span·class="w"> | 354 | </span><span·class="w"> |
| 355 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 355 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="6190203119-14">(</span><span·class="p"·data-group-id="6190203119-15">[</span><span·class="ss">on_tc_skip</span><span·class="p">/</span><span·class="mi">4</span><span·class="p"·data-group-id="6190203119-15">]</span><span·class="p"·data-group-id="6190203119-14">)</span><span·class="p">.</span><span·class="w"> |
| 356 | </span><span·class="w"> | 356 | </span><span·class="w"> |
| 357 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 357 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="6190203119-16">(</span><span·class="p"·data-group-id="6190203119-17">[</span><span·class="ss">terminate</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id="6190203119-17">]</span><span·class="p"·data-group-id="6190203119-16">)</span><span·class="p">.</span><span·class="w"> |
| 358 | </span><span·class="c1">%%·This·hook·state·is·threaded·through·all·the·callbacks.</span><span·class="w"> | 358 | </span><span·class="c1">%%·This·hook·state·is·threaded·through·all·the·callbacks.</span><span·class="w"> |
| 359 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 359 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="6190203119-18">(</span><span·class="ss">state</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6190203119-19">{</span><span·class="ss">filename</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">total[·...·truncated·by·diffoscope;·len:·489,·SHA:·e1659573562e68f5c2285af085f2a78098adfde083ebf17ca8e709472fa51334·...·]-18">)</span><span·class="p">.</span><span·class="w"> |
| 360 | </span><span·class="c1">%%·This·example·hook·prints·its·results·to·a·file,·see·terminate/1.</span><span·class="w"> | 360 | </span><span·class="c1">%%·This·example·hook·prints·its·results·to·a·file,·see·terminate/1.</span><span·class="w"> |
| 361 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 361 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="6190203119-20">(</span><span·class="ss">test_run</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6190203119-21">{</span><span·class="ss">total</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">skipp[·...·truncated·by·diffoscope;·len:·182,·SHA:·51f2bd621dfe272053e37823c98079e370da0d09f437db7cb3e67302fede1735·...·]-20">)</span><span·class="p">.</span><span·class="w"> |
| 362 | </span><span·class="c1">%%·Return·a·unique·id·for·this·CTH.</span><span·class="w"> | 362 | </span><span·class="c1">%%·Return·a·unique·id·for·this·CTH.</span><span·class="w"> |
| 363 | </span><span·class="c1">%%·Using·the·filename·means·the·hook·can·be·used·with·different</span><span·class="w"> | 363 | </span><span·class="c1">%%·Using·the·filename·means·the·hook·can·be·used·with·different</span><span·class="w"> |
| 364 | </span><span·class="c1">%%·log·files·to·separate·timing·data·within·the·same·test·run.</span><span·class="w"> | 364 | </span><span·class="c1">%%·log·files·to·separate·timing·data·within·the·same·test·run.</span><span·class="w"> |
| 365 | </span><span·class="c1">%%·See·Installing·a·CTH·for·more·information.</span><span·class="w"> | 365 | </span><span·class="c1">%%·See·Installing·a·CTH·for·more·information.</span><span·class="w"> |
| 366 | </span><span·class="nf">id</span><span·class="p"·data-group-id=" | 366 | </span><span·class="nf">id</span><span·class="p"·data-group-id="6190203119-22">(</span><span·class="n">Opts</span><span·class="p"·data-group-id="6190203119-22">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 367 | ····</span><span·class="c1">%%·the·path·is·relative·to·the·test·run·directory</span><span·class="w"> | 367 | ····</span><span·class="c1">%%·the·path·is·relative·to·the·test·run·directory</span><span·class="w"> |
| 368 | ····</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id=" | 368 | ····</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id="6190203119-23">(</span><span·class="ss">filename</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opts</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"example_cth.log"</span><span·class="p"·data-group-i[·...·truncated·by·diffoscope;·len:·13,·SHA:·7289eacffdb4d278db8496379394ce89743e72a794b84dfa154b1eff64d4a366·...·]-23">)</span><span·class="p">.</span><span·class="w"> |
| 369 | </span><span·class="c1">%%·Always·called·before·any·other·callback·function.·Use·this·to·initiate</span><span·class="w"> | 369 | </span><span·class="c1">%%·Always·called·before·any·other·callback·function.·Use·this·to·initiate</span><span·class="w"> |
| 370 | </span><span·class="c1">%%·any·common·state.</span><span·class="w"> | 370 | </span><span·class="c1">%%·any·common·state.</span><span·class="w"> |
| 371 | </span><span·class="nf">init</span><span·class="p"·data-group-id=" | 371 | </span><span·class="nf">init</span><span·class="p"·data-group-id="6190203119-24">(</span><span·class="n">Id</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">Opts</span><span·class="p"·data-group-id="6190203119-24">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 372 | ····</span><span·class="p"·data-group-id=" | 372 | ····</span><span·class="p"·data-group-id="6190203119-25">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">state</span><span·class="p"·data-group-id="6190203119-26">{</span><span·class="ss">filename</span><span·class="w">·</s[·...·truncated·by·diffoscope;·len:·602,·SHA:·06886472713235e2046aee26e48d5b1eea17099be06a1cff620c78b0df8825cd·...·]-25">}</span><span·class="p">.</span><span·class="w"> |
| 373 | </span><span·class="c1">%%·Called·before·init_per_suite·is·called.</span><span·class="w"> | 373 | </span><span·class="c1">%%·Called·before·init_per_suite·is·called.</span><span·class="w"> |
| 374 | </span><span·class="nf">pre_init_per_suite</span><span·class="p"·data-group-id=" | 374 | </span><span·class="nf">pre_init_per_suite</span><span·class="p"·data-group-id="6190203119-28">(</span><span·class="p">_</span><span·class="n">Suite</span><span·class="p">,</span><span·class="n">Config</span><span·class="p">,</span><span·class="n">State</span><span·class="p"·data-group-id="6190203119-28">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 375 | ····</span><span·class="p"·data-group-id=" | 375 | ····</span><span·class="p"·data-group-id="6190203119-29">{</span><span·class="n">Config</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="o">#</span><span·class="ss">state</span><span·class="p"·data-group-id="6190203119-30">{</span><span·class="ss">suit[·...·truncated·by·diffoscope;·len:·461,·SHA:·fc551b026905aec951c264fe2607af6bbaa47758c068401b4ab69a96e0f382b1·...·]-29">}</span><span·class="p">.</span><span·class="w"> |
| 376 | </span><span·class="c1">%%·Called·after·end_per_suite.</span><span·class="w"> | 376 | </span><span·class="c1">%%·Called·after·end_per_suite.</span><span·class="w"> |
| 377 | </span><span·class="nf">post_end_per_suite</span><span·class="p"·data-group-id=" | 377 | </span><span·class="nf">post_end_per_suite</span><span·class="p"·data-group-id="6190203119-32">(</span><span·class="n">Suite</span><span·class="p">,</span><span·class="p">_</span><span·class="n">Config</span><span·class="p">,</span><span·class="n">Return</span><span·class="p">,</span><span·class="n">State</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·18,·SHA:·afb2bfdab875370f597da92902637223fbc7c0d429cce5660f3443ef047ea403·...·]-32">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 378 | ····</span><span·class="n">Data</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 378 | ····</span><span·class="n">Data</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6190203119-33">{</span><span·class="ss">suites</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Suite</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="o">#</span><span·class="ss">state</span><span·class="p">.</span><span·class="ss">suite_total</span><span·class="p">,</span><span·class="w"> |
| 379 | ············</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">reverse</span><span·class="p"·data-group-id=" | 379 | ············</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">reverse</span><span·class="p"·data-group-id="6190203119-34">(</span><span·class="n">State</span><span·class="o">#</span><span·class="ss">state</span><span·class="p">.</span><span·class="ss">tcs</span><span·class="p"·data-group-id="6190203119-34">)</span><span·class="p"·data-group-id="6190203119-33">}</span><span·class="p">,</span><span·class="w"> |
| 380 | ····</span><span·class="p"·data-group-id=" | 380 | ····</span><span·class="p"·data-group-id="6190203119-35">{</span><span·class="n">Return</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="o">#</span><span·class="ss">state</span><span·class="p"·data-group-id="6190203119-36">{</span><span·class="ss">data[·...·truncated·by·diffoscope;·len:·406,·SHA:·a53171b404d02c3e6cbbb888af2c3b6777c21e710da12692cb8999cfa0b256d9·...·]-37">]</span><span·class="p">,</span><span·class="w"> |
| 381 | ·························</span><span·class="ss">total</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">State</span><span·class="o">#</span><span·class="ss">state</span><span·class="p">.</span><span·class="ss">total</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="n">State</span><span·class="o">#</span><span·class="ss">state</span><span·class="p">.</span><span·class="ss">suite_total</span><span·class="p"·data-group-id=" | 381 | ·························</span><span·class="ss">total</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">State</span><span·class="o">#</span><span·class="ss">state</span><span·class="p">.</span><span·class="ss">total</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="n">State</span><span·class="o">#</span><span·class="ss">state</span><span·class="p">.</span><span·class="ss">suite_total</span><span·class="p"·data-group-id="6190203119-36">}</span><span·class="p"·data-group-id="6190203119-35">}</span><span·class="p">.</span><span·class="w"> |
| 382 | </span><span·class="c1">%%·Called·before·each·init_per_testcase.</span><span·class="w"> | 382 | </span><span·class="c1">%%·Called·before·each·init_per_testcase.</span><span·class="w"> |
| 383 | </span><span·class="nf">pre_init_per_testcase</span><span·class="p"·data-group-id=" | 383 | </span><span·class="nf">pre_init_per_testcase</span><span·class="p"·data-group-id="6190203119-38">(</span><span·class="p">_</span><span·class="n">Suite</span><span·class="p">,</span><span·class="p">_</span><span·class="n">TC</span><span·class="p">,</span><span·class="n">Config</span><span·class="p">,</span><span·class="n">State</span><sp[·...·truncated·by·diffoscope;·len:·38,·SHA:·ba77baf0eef4d3d30c39cef8efc70de2fb1db6f3916e3bc5effa6d7f5330cd77·...·]-38">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 384 | ····</span><span·class="n">Now</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">monotonic_time</span><span·class="p"·data-group-id=" | 384 | ····</span><span·class="n">Now</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">monotonic_time</span><span·class="p"·data-group-id="6190203119-39">(</span><span·class="ss">microsecond</span><span·class="p"·data-group-id="6190203119-39">)</span><span·class="p">,</span><span·class="w"> |
| 385 | ····</span><span·class="p"·data-group-id=" | 385 | ····</span><span·class="p"·data-group-id="6190203119-40">{</span><span·class="n">Config</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="o">#</span><span·class="ss">state</span><span·class="p"·data-group-id="6190203119-41">{</span><span·class="ss">ts</[·...·truncated·by·diffoscope;·len:·590,·SHA:·c1ca12179b4503970b9d1538ffa29d2b126b216628a418d8b03f9c2e81a577bc·...·]-40">}</span><span·class="p">.</span><span·class="w"> |
| 386 | </span><span·class="c1">%%·Called·after·each·end_per_testcase.</span><span·class="w"> | 386 | </span><span·class="c1">%%·Called·after·each·end_per_testcase.</span><span·class="w"> |
| 387 | </span><span·class="nf">post_end_per_testcase</span><span·class="p"·data-group-id=" | 387 | </span><span·class="nf">post_end_per_testcase</span><span·class="p"·data-group-id="6190203119-42">(</span><span·class="n">Suite</span><span·class="p">,</span><span·class="n">TC</span><span·class="p">,</span><span·class="p">_</span><span·class="n">Config</span><span·class="p">,</span><span·class="n">Return</span><span·class="p">,</span><s[·...·truncated·by·diffoscope;·len:·67,·SHA:·9896352ea8e6be86f9c5aaa48ef9dca5681b4309b1586b263048dc37a36335d8·...·]-42">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 388 | ····</span><span·class="n">Now</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">monotonic_time</span><span·class="p"·data-group-id=" | 388 | ····</span><span·class="n">Now</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">monotonic_time</span><span·class="p"·data-group-id="6190203119-43">(</span><span·class="ss">microsecond</span><span·class="p"·data-group-id="6190203119-43">)</span><span·class="p">,</span><span·class="w"> |
| 389 | ····</span><span·class="n">TCInfo</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 389 | ····</span><span·class="n">TCInfo</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6190203119-44">{</span><span·class="ss">testcase</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Suite</span><span·class="p">,</span><span·class="w">·</span><span·class="n">TC</span><span·class="p">,</span><span·class="w">·</span><spa[·...·truncated·by·diffoscope;·len:·343,·SHA:·05176ff98c0ac68333a270d19a9cf018d05892ccec574623635cfe5823089171·...·]-44">}</span><span·class="p">,</span><span·class="w"> |
| 390 | ····</span><span·class="p"·data-group-id=" | 390 | ····</span><span·class="p"·data-group-id="6190203119-45">{</span><span·class="n">Return</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="o">#</span><span·class="ss">state</span><span·class="p"·data-group-id="6190203119-46">{</span><span·class="ss">ts</[·...·truncated·by·diffoscope;·len:·693,·SHA:·3b06136fb01782454c60404f66cf728e84e1aa7e13bd0db70a1cb0369b2f9f7e·...·]-45">}</span><span·class="p">.</span><span·class="w"> |
| 391 | </span><span·class="c1">%%·Called·when·a·test·case·is·skipped·by·either·user·action</span><span·class="w"> | 391 | </span><span·class="c1">%%·Called·when·a·test·case·is·skipped·by·either·user·action</span><span·class="w"> |
| 392 | </span><span·class="c1">%%·or·due·to·an·init·function·failing.</span><span·class="w"> | 392 | </span><span·class="c1">%%·or·due·to·an·init·function·failing.</span><span·class="w"> |
| 393 | </span><span·class="nf">on_tc_skip</span><span·class="p"·data-group-id=" | 393 | </span><span·class="nf">on_tc_skip</span><span·class="p"·data-group-id="6190203119-48">(</span><span·class="p">_</span><span·class="n">Suite</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">TC</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class=[·...·truncated·by·diffoscope;·len:·134,·SHA:·4a825b38e1b263663ea67d1835e991919b3c2309d7854bde3197754c856d1c3b·...·]-48">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 394 | ····</span><span·class="n">State</span><span·class="o">#</span><span·class="ss">state</span><span·class="p"·data-group-id=" | 394 | ····</span><span·class="n">State</span><span·class="o">#</span><span·class="ss">state</span><span·class="p"·data-group-id="6190203119-49">{</span><span·class="ss">skipped</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">State</span><span·class="o">#</span><span·class="ss">state</span><span·class="p">.</span><span·class="ss">skipped<[·...·truncated·by·diffoscope;·len:·144,·SHA:·b67cea248bbe605d8f48ef9a2774ea582cbc59f151ef3ed86a920baca01150a2·...·]-49">}</span><span·class="p">.</span><span·class="w"> |
| 395 | </span><span·class="c1">%%·Called·when·the·scope·of·the·CTH·is·done.</span><span·class="w"> | 395 | </span><span·class="c1">%%·Called·when·the·scope·of·the·CTH·is·done.</span><span·class="w"> |
| 396 | </span><span·class="nf">terminate</span><span·class="p"·data-group-id=" | 396 | </span><span·class="nf">terminate</span><span·class="p"·data-group-id="6190203119-50">(</span><span·class="n">State</span><span·class="p"·data-group-id="6190203119-50">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 397 | ····</span><span·class="c1">%%·use·append·to·avoid·data·loss·if·the·path·is·reused</span><span·class="w"> | 397 | ····</span><span·class="c1">%%·use·append·to·avoid·data·loss·if·the·path·is·reused</span><span·class="w"> |
| 398 | ····</span><span·class="p"·data-group-id=" | 398 | ····</span><span·class="p"·data-group-id="6190203119-51">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">File</span><span·class="p"·data-group-id="6190203119-51">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·[·...·truncated·by·diffoscope;·len:·569,·SHA:·3b3752a2a6be0d2e9095af36ae21ad82d5aecfd0fc12e325440af5a8018701b0·...·]-52">)</span><span·class="p">,</span><span·class="w"> |
| 399 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 399 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="6190203119-54">(</span><span·class="n">File</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"</span><span·class="si">~p</span><span·class="s">.</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span>[·...·truncated·by·diffoscope;·len:·340,·SHA:·9485d982a9ac9b15b0483303bedaa1279befa54bb66163f94616e044dc881b1d·...·]-54">)</span><span·class="p">,</span><span·class="w"> |
| 400 | ····</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id=" | 400 | ····</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id="6190203119-57">(</span><span·class="n">File</span><span·class="p"·data-group-id="6190203119-57">)</span><span·class="p">,</span><span·class="w"> |
| 401 | ····</span><span·class="ss">ok</span><span·class="p">.</span><span·class="w"> | 401 | ····</span><span·class="ss">ok</span><span·class="p">.</span><span·class="w"> |
| 402 | </span><span·class="nf">results</span><span·class="p"·data-group-id=" | 402 | </span><span·class="nf">results</span><span·class="p"·data-group-id="6190203119-58">(</span><span·class="n">State</span><span·class="p"·data-group-id="6190203119-58">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
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| Offset 434, 15 lines modified | Offset 434, 15 lines modified | ||
| 434 | ······<div·class="specs"> | 434 | ······<div·class="specs"> |
| 435 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·get_event_mgr_ref()·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:atom/0">atom</a>().</pre> | 435 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·get_event_mgr_ref()·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:atom/0">atom</a>().</pre> |
| 436 | ······</div> | 436 | ······</div> |
| 437 | <p>Gets·a·reference·to·the·<code·class="inline">Common·Test</code>·master·event·manager.·The·reference·can·be | 437 | <p>Gets·a·reference·to·the·<code·class="inline">Common·Test</code>·master·event·manager.·The·reference·can·be |
| 438 | used·to,·for·example,·add·a·user-specific·event·handler·while·tests·are·running.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">gen_event</span><span·class="p">:</span><span·class="nf">add_handler</span><span·class="p"·data-group-id=" | 438 | used·to,·for·example,·add·a·user-specific·event·handler·while·tests·are·running.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">gen_event</span><span·class="p">:</span><span·class="nf">add_handler</span><span·class="p"·data-group-id="3502268395-1">(</span><span·class="nc">ct_master</span><span·class="p">:</span><span·class="nf">get_event_mgr_ref</span><span·class="p"·data-group-id="3502268395-2">(</span><span·class="p"·data-group-id="3502268395-2">)</span><span·class="p">,</span><span·[·...·truncated·by·diffoscope;·len:·244,·SHA:·2670beec06522bc0c910d6d23248bfebeecb4c8fcf8731b1a2a1f8d75dd2d319·...·]-1">)</span></code></pre> |
| 439 | ··</section> | 439 | ··</section> |
| 440 | </section> | 440 | </section> |
| 441 | <section·class="detail"·id="progress/0"> | 441 | <section·class="detail"·id="progress/0"> |
| 442 | ··<div·class="detail-header"> | 442 | ··<div·class="detail-header"> |
| 443 | ····<a·href="#progress/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 443 | ····<a·href="#progress/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 444 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 444 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 152 | a·common·file·system.·<code·class="inline">Common·Test</code>·Master·cannot·start·test·nodes | 152 | a·common·file·system.·<code·class="inline">Common·Test</code>·Master·cannot·start·test·nodes |
| 153 | automatically.·The·nodes·must·be·started·in·advance·for·<code·class="inline">Common·Test</code>·Master·to | 153 | automatically.·The·nodes·must·be·started·in·advance·for·<code·class="inline">Common·Test</code>·Master·to |
| 154 | be·able·to·start·test·sessions·on·them.</p><p>Tests·are·started·by·calling·<a·href="ct_master.html#run/1"><code·class="inline">ct_master:run(TestSpecs)</code></a>·or | 154 | be·able·to·start·test·sessions·on·them.</p><p>Tests·are·started·by·calling·<a·href="ct_master.html#run/1"><code·class="inline">ct_master:run(TestSpecs)</code></a>·or |
| 155 | <a·href="ct_master.html#run/3"><code·class="inline">ct_master:run(TestSpecs,·InclNodes,·ExclNodes)</code></a></p><p><code·class="inline">TestSpecs</code>·is·either·the·name·of·a·test·specification·file·(string)·or·a·list | 155 | <a·href="ct_master.html#run/3"><code·class="inline">ct_master:run(TestSpecs,·InclNodes,·ExclNodes)</code></a></p><p><code·class="inline">TestSpecs</code>·is·either·the·name·of·a·test·specification·file·(string)·or·a·list |
| 156 | of·test·specifications.·If·it·is·a·list,·the·specifications·are·handled·(and·the | 156 | of·test·specifications.·If·it·is·a·list,·the·specifications·are·handled·(and·the |
| 157 | corresponding·tests·executed)·in·sequence.·An·element·in·a·<code·class="inline">TestSpecs</code>·list·can | 157 | corresponding·tests·executed)·in·sequence.·An·element·in·a·<code·class="inline">TestSpecs</code>·list·can |
| 158 | also·be·list·of·test·specifications.·The·specifications·in·such·a·list·are | 158 | also·be·list·of·test·specifications.·The·specifications·in·such·a·list·are |
| 159 | merged·into·one·combined·specification·before·test·execution.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">ct_master</span><span·class="p">:</span><span·class="nf">run</span><span·class="p"·data-group-id=" | 159 | merged·into·one·combined·specification·before·test·execution.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">ct_master</span><span·class="p">:</span><span·class="nf">run</span><span·class="p"·data-group-id="5089214528-1">(</span><span·class="p"·data-group-id="5089214528-2">[</span><span·class="s">"ts1"</span><span·class="p">,</span><span·class="s">"ts2"</span><span·class="p">,</span><span·class="p"·data-group-id="5089214528-3">[</span><spa[·...·truncated·by·diffoscope;·len:·243,·SHA:·6f519e8ccc66b9508a019f9e7728d77984df05011004082f2720f59bce26cb68·...·]-1">)</span></code></pre><p>Here,·the·tests·specified·by·"ts1"·run·first,·then·the·tests·specified·by·"ts2", |
| 160 | and·finally·the·tests·specified·by·both·"ts3"·and·"ts4".</p><p>The·<code·class="inline">InclNodes</code>·argument·to·<code·class="inline">run/3</code>·is·a·list·of·node·names.·Function·<code·class="inline">run/3</code> | 160 | and·finally·the·tests·specified·by·both·"ts3"·and·"ts4".</p><p>The·<code·class="inline">InclNodes</code>·argument·to·<code·class="inline">run/3</code>·is·a·list·of·node·names.·Function·<code·class="inline">run/3</code> |
| 161 | runs·the·tests·in·<code·class="inline">TestSpecs</code>·just·like·<code·class="inline">run/1</code>,·but·also·takes·any·test·in | 161 | runs·the·tests·in·<code·class="inline">TestSpecs</code>·just·like·<code·class="inline">run/1</code>,·but·also·takes·any·test·in |
| 162 | <code·class="inline">TestSpecs</code>,·which·is·not·explicitly·tagged·with·a·particular·node·name,·and | 162 | <code·class="inline">TestSpecs</code>,·which·is·not·explicitly·tagged·with·a·particular·node·name,·and |
| 163 | execute·it·on·the·nodes·listed·in·<code·class="inline">InclNodes</code>.·By·using·<code·class="inline">run/3</code>·this·way,·any | 163 | execute·it·on·the·nodes·listed·in·<code·class="inline">InclNodes</code>.·By·using·<code·class="inline">run/3</code>·this·way,·any |
| 164 | test·specification·can·be·used,·with·or·without·node·information,·in·a | 164 | test·specification·can·be·used,·with·or·without·node·information,·in·a |
| 165 | large-scale·test·environment.</p><p><code·class="inline">ExclNodes</code>·is·a·list·of·nodes·to·be·excluded·from·the·test.·That·is,·tests·that | 165 | large-scale·test·environment.</p><p><code·class="inline">ExclNodes</code>·is·a·list·of·nodes·to·be·excluded·from·the·test.·That·is,·tests·that |
| 166 | are·specified·in·the·test·specification·to·run·on·a·particular·node·are·not | 166 | are·specified·in·the·test·specification·to·run·on·a·particular·node·are·not |
| Offset 192, 40 lines modified | Offset 192, 40 lines modified | ||
| 192 | achieved·using·constants).·The·alias·is·declared·with·a·<code·class="inline">node</code>·term·as·follows:</p><p><code·class="inline">{node,·NodeAlias,·NodeName}</code></p><p>If·<code·class="inline">NodeRefs</code>·has·the·value·<code·class="inline">all_nodes</code>,·the·operation·or·test·is·performed·on | 192 | achieved·using·constants).·The·alias·is·declared·with·a·<code·class="inline">node</code>·term·as·follows:</p><p><code·class="inline">{node,·NodeAlias,·NodeName}</code></p><p>If·<code·class="inline">NodeRefs</code>·has·the·value·<code·class="inline">all_nodes</code>,·the·operation·or·test·is·performed·on |
| 193 | all·specified·test·nodes.·(Declaring·a·term·without·a·<code·class="inline">NodeRefs</code>·element·has·the | 193 | all·specified·test·nodes.·(Declaring·a·term·without·a·<code·class="inline">NodeRefs</code>·element·has·the |
| 194 | same·effect).·If·<code·class="inline">NodeRefs</code>·has·the·value·<code·class="inline">master</code>,·the·operation·is·only | 194 | same·effect).·If·<code·class="inline">NodeRefs</code>·has·the·value·<code·class="inline">master</code>,·the·operation·is·only |
| 195 | performed·on·the·<code·class="inline">Common·Test</code>·Master·node·(namely·set·the·log·directory·or | 195 | performed·on·the·<code·class="inline">Common·Test</code>·Master·node·(namely·set·the·log·directory·or |
| 196 | install·an·event·handler).</p><p>Consider·the·example·in·section | 196 | install·an·event·handler).</p><p>Consider·the·example·in·section |
| 197 | <a·href="run_test_chapter.html#test_specifications">Test·Specifications</a>·in·section | 197 | <a·href="run_test_chapter.html#test_specifications">Test·Specifications</a>·in·section |
| 198 | Running·Tests·and·Analysing·Results,·now·extended·with·node·information·and | 198 | Running·Tests·and·Analysing·Results,·now·extended·with·node·information·and |
| 199 | intended·to·be·executed·by·<code·class="inline">Common·Test</code>·Master:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 199 | intended·to·be·executed·by·<code·class="inline">Common·Test</code>·Master:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="3116390881-1">{</span><span·class="ss">define</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'Top'</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"/home/test"</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·15,·SHA:·fbbfe556cddbb6ac39f921021517dfd217b022080d5da6fefd41114dcb60d07a·...·]-1">}</span><span·class="p">.</span><span·class="w"> |
| 200 | </span><span·class="p"·data-group-id=" | 200 | </span><span·class="p"·data-group-id="3116390881-2">{</span><span·class="ss">define</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'T1'</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"'Top'/t1"</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·20,·SHA:·d4097a0e1f39504b7b1afbac3d1676f423c8937c8723a190e30c01c39ba35182·...·]-2">}</span><span·class="p">.</span><span·class="w"> |
| 201 | </span><span·class="p"·data-group-id=" | 201 | </span><span·class="p"·data-group-id="3116390881-3">{</span><span·class="ss">define</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'T2'</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"'Top'/t2"</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·20,·SHA:·d4097a0e1f39504b7b1afbac3d1676f423c8937c8723a190e30c01c39ba35182·...·]-3">}</span><span·class="p">.</span><span·class="w"> |
| 202 | </span><span·class="p"·data-group-id=" | 202 | </span><span·class="p"·data-group-id="3116390881-4">{</span><span·class="ss">define</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'T3'</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"'Top'/t3"</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·20,·SHA:·d4097a0e1f39504b7b1afbac3d1676f423c8937c8723a190e30c01c39ba35182·...·]-4">}</span><span·class="p">.</span><span·class="w"> |
| 203 | </span><span·class="p"·data-group-id=" | 203 | </span><span·class="p"·data-group-id="3116390881-5">{</span><span·class="ss">define</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'CfgFile'</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"config.cfg"</span><span·class="p"·data-g[·...·truncated·by·diffoscope;·len:·19,·SHA:·2848bc83e9c5de0bdecd1052abcaa206750c8a5a6c600f9aba9d3bb648e3fd48·...·]-5">}</span><span·class="p">.</span><span·class="w"> |
| 204 | </span><span·class="p"·data-group-id=" | 204 | </span><span·class="p"·data-group-id="3116390881-6">{</span><span·class="ss">define</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'Node'</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ct_node</span><span·class="p"·data-group-id="31163908[·...·truncated·by·diffoscope;·len:·2,·SHA:·5316ca1c5ddca8e6ceccfce58f3b8540e540ee22f6180fb89492904051b3d531·...·]-6">}</span><span·class="p">.</span><span·class="w"> |
| 205 | </span><span·class="p"·data-group-id=" | 205 | </span><span·class="p"·data-group-id="3116390881-7">{</span><span·class="nb">node</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">node1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'Node@host_x'</span><span·class="p"·data-group-id="31163[·...·truncated·by·diffoscope;·len:·5,·SHA:·45733e271e269f699f201ef03fab42bdf0b2351d7bf7a678159092c6a40f13cd·...·]-7">}</span><span·class="p">.</span><span·class="w"> |
| 206 | </span><span·class="p"·data-group-id=" | 206 | </span><span·class="p"·data-group-id="3116390881-8">{</span><span·class="nb">node</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">node2</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'Node@host_y'</span><span·class="p"·data-group-id="31163[·...·truncated·by·diffoscope;·len:·5,·SHA:·45733e271e269f699f201ef03fab42bdf0b2351d7bf7a678159092c6a40f13cd·...·]-8">}</span><span·class="p">.</span><span·class="w"> |
| 207 | </span><span·class="p"·data-group-id=" | 207 | </span><span·class="p"·data-group-id="3116390881-9">{</span><span·class="ss">logdir</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">master</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"'Top'/master_logs"</span><span·class="p"·da[·...·truncated·by·diffoscope;·len:·23,·SHA:·fd7febeda1a9fafae8f34f1e644d585169d1944d5c55f3a39977a28e4ac23e34·...·]-9">}</span><span·class="p">.</span><span·class="w"> |
| 208 | </span><span·class="p"·data-group-id=" | 208 | </span><span·class="p"·data-group-id="3116390881-10">{</span><span·class="ss">logdir</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"'Top'/logs"</span><span·class="p"·data-group-id="3116390881-10">}</span><span·class="p">.</span><span·class="w"> |
| 209 | </span><span·class="p"·data-group-id=" | 209 | </span><span·class="p"·data-group-id="3116390881-11">{</span><span·class="ss">config</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">node1</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"'T1'/'CfgFile'"</span><span·class="[·...·truncated·by·diffoscope;·len:·28,·SHA:·c54345ca34c6181249c5343cfe349f72d205dae52d0641fdfd1b797a89914dc6·...·]-11">}</span><span·class="p">.</span><span·class="w"> |
| 210 | </span><span·class="p"·data-group-id=" | 210 | </span><span·class="p"·data-group-id="3116390881-12">{</span><span·class="ss">config</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">node2</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"'T2'/'CfgFile'"</span><span·class="[·...·truncated·by·diffoscope;·len:·28,·SHA:·c54345ca34c6181249c5343cfe349f72d205dae52d0641fdfd1b797a89914dc6·...·]-12">}</span><span·class="p">.</span><span·class="w"> |
| 211 | </span><span·class="p"·data-group-id=" | 211 | </span><span·class="p"·data-group-id="3116390881-13">{</span><span·class="ss">config</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"'T3'/'CfgFile'"</span><span·class="p"·data-group-id="3116390881-13">}</span><span·class="p">.</span><span·class="w"> |
| 212 | </span><span·class="p"·data-group-id=" | 212 | </span><span·class="p"·data-group-id="3116390881-14">{</span><span·class="ss">suites</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">node1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'T1'</span><span·class="p">,</span><span·class="w">·<[·...·truncated·by·diffoscope;·len:·74,·SHA:·c6b40033a209c5af3d829777979e37b624ec5d0adbc35a0ac49c1ad46791015a·...·]-14">}</span><span·class="p">.</span><span·class="w"> |
| 213 | </span><span·class="p"·data-group-id=" | 213 | </span><span·class="p"·data-group-id="3116390881-15">{</span><span·class="ss">skip_suites</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">node1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'T1'</span><span·class="p">,</span><span·class="[·...·truncated·by·diffoscope;·len:·348,·SHA:·213292531806140a86febbf967991b7bd99c4110af71741b8830864e981cadc2·...·]-15">}</span><span·class="p">.</span><span·class="w"> |
| 214 | </span><span·class="p"·data-group-id=" | 214 | </span><span·class="p"·data-group-id="3116390881-17">{</span><span·class="ss">skip_cases</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">node1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'T1'</span><span·class="p">,</span><span·class="w[·...·truncated·by·diffoscope;·len:·415,·SHA:·0e0c9338bc63f899700710761bcad4141e819b128058097c8db598698e038e02·...·]-17">}</span><span·class="p">.</span><span·class="w"> |
| 215 | </span><span·class="p"·data-group-id=" | 215 | </span><span·class="p"·data-group-id="3116390881-19">{</span><span·class="ss">skip_cases</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">node1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'T1'</span><span·class="p">,</span><span·class="w[·...·truncated·by·diffoscope;·len:·358,·SHA:·07b1ba03d300452f484738ddc6b7fec8318ab9e65a813be81646375172924da9·...·]-19">}</span><span·class="p">.</span><span·class="w"> |
| 216 | </span><span·class="p"·data-group-id=" | 216 | </span><span·class="p"·data-group-id="3116390881-21">{</span><span·class="ss">suites</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">node2</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'T2'</span><span·class="p">,</span><span·class="w">·<[·...·truncated·by·diffoscope;·len:·245,·SHA:·3d13a0835fa9f2c07389a4ea9c6ec4e8e1a85d8c4aa69a30f97bf871f233b70b·...·]-21">}</span><span·class="p">.</span><span·class="w"> |
| 217 | </span><span·class="p"·data-group-id=" | 217 | </span><span·class="p"·data-group-id="3116390881-23">{</span><span·class="ss">cases</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">node2</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'T2'</span><span·class="p">,</span><span·class="w">·</[·...·truncated·by·diffoscope;·len:·370,·SHA:·4488dbbc87d86959c388ad27078bb891672173d5ce9fdd3bee5d3113b5586ffd·...·]-23">}</span><span·class="p">.</span><span·class="w"> |
| 218 | </span><span·class="p"·data-group-id=" | 218 | </span><span·class="p"·data-group-id="3116390881-25">{</span><span·class="ss">skip_suites</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'T3'</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">all</span><span·class="p">,</span><span·class="w"[·...·truncated·by·diffoscope;·len:·100,·SHA:·622e8f1907854bb50aa360be3f096e89b542c03debd267c4b59773543758a803·...·]-25">}</span><span·class="p">.</span></code></pre><p>This·example·specifies·the·same·tests·as·the·original·example.·But·now·if |
| 219 | started·with·a·call·to·<code·class="inline">ct_master:run(TestSpecName)</code>,·test·<code·class="inline">t1</code>·is·executed·on | 219 | started·with·a·call·to·<code·class="inline">ct_master:run(TestSpecName)</code>,·test·<code·class="inline">t1</code>·is·executed·on |
| 220 | node·<code·class="inline">ct_node@host_x</code>·(<code·class="inline">node1</code>),·test·<code·class="inline">t2</code>·on·<code·class="inline">ct_node@host_y</code>·(<code·class="inline">node2</code>)·and | 220 | node·<code·class="inline">ct_node@host_x</code>·(<code·class="inline">node1</code>),·test·<code·class="inline">t2</code>·on·<code·class="inline">ct_node@host_y</code>·(<code·class="inline">node2</code>)·and |
| 221 | test·<code·class="inline">t3</code>·on·both·<code·class="inline">node1</code>·and·<code·class="inline">node2</code>.·Configuration·file·<code·class="inline">t1</code>·is·only·read·on | 221 | test·<code·class="inline">t3</code>·on·both·<code·class="inline">node1</code>·and·<code·class="inline">node2</code>.·Configuration·file·<code·class="inline">t1</code>·is·only·read·on |
| 222 | <code·class="inline">node1</code>·and·configuration·file·<code·class="inline">t2</code>·only·on·<code·class="inline">node2</code>,·while·the·configuration | 222 | <code·class="inline">node1</code>·and·configuration·file·<code·class="inline">t2</code>·only·on·<code·class="inline">node2</code>,·while·the·configuration |
| 223 | file·<code·class="inline">t3</code>·is·read·on·both·<code·class="inline">node1</code>·and·<code·class="inline">node2</code>.·Both·test·nodes·write·log·files | 223 | file·<code·class="inline">t3</code>·is·read·on·both·<code·class="inline">node1</code>·and·<code·class="inline">node2</code>.·Both·test·nodes·write·log·files |
| 224 | to·the·same·directory.·(However,·the·<code·class="inline">Common·Test</code>·Master·node·uses·a·different | 224 | to·the·same·directory.·(However,·the·<code·class="inline">Common·Test</code>·Master·node·uses·a·different |
| 225 | log·directory·than·the·test·nodes.)</p><p>If·the·test·session·is·instead·started·with·a·call·to | 225 | log·directory·than·the·test·nodes.)</p><p>If·the·test·session·is·instead·started·with·a·call·to |
| Offset 240, 21 lines modified | Offset 240, 21 lines modified | ||
| 240 | always·performed·too,·of·course.</p><h2·id="automatic-startup-of-test-target-nodes"·class="section-heading"> | 240 | always·performed·too,·of·course.</p><h2·id="automatic-startup-of-test-target-nodes"·class="section-heading"> |
| 241 | ··<a·href="#automatic-startup-of-test-target-nodes"·class="hover-link"> | 241 | ··<a·href="#automatic-startup-of-test-target-nodes"·class="hover-link"> |
| 242 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 242 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 243 | ··</a> | 243 | ··</a> |
| 244 | ··<span·class="text">Automatic·Startup·of·Test·Target·Nodes</span> | 244 | ··<span·class="text">Automatic·Startup·of·Test·Target·Nodes</span> |
| 245 | </h2> | 245 | </h2> |
| 246 | <p><a·href=""·id="ct_slave"></a></p><p>Initial·actions·can·be·started·and·performed·automatically·on·test·target·nodes | 246 | <p><a·href=""·id="ct_slave"></a></p><p>Initial·actions·can·be·started·and·performed·automatically·on·test·target·nodes |
| 247 | using·test·specification·term·<code·class="inline">init</code>.</p><p>Two·subterms·are·supported,·<code·class="inline">node_start</code>·and·<code·class="inline">eval</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 247 | using·test·specification·term·<code·class="inline">init</code>.</p><p>Two·subterms·are·supported,·<code·class="inline">node_start</code>·and·<code·class="inline">eval</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="1627691890-1">{</span><span·class="nb">node</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">node1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">node1@host1</span><span·class="p"·data-group-id="1627691890-1">}</span><span·class="p">.</span><span·class="w"> |
| 248 | </span><span·class="p"·data-group-id=" | 248 | </span><span·class="p"·data-group-id="1627691890-2">{</span><span·class="nb">node</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">node2</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">node1@host2</span><span·class="p"·data-group-id="1627691890-2">}</span><span·class="p">.</span><span·class="w"> |
| 249 | </span><span·class="p"·data-group-id=" | 249 | </span><span·class="p"·data-group-id="1627691890-3">{</span><span·class="nb">node</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">node3</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">node2@host2</span><span·class="p"·data-group-id="1627691890-3">}</span><span·class="p">.</span><span·class="w"> |
| 250 | </span><span·class="p"·data-group-id=" | 250 | </span><span·class="p"·data-group-id="1627691890-4">{</span><span·class="nb">node</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">node4</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">node1@host3</span><span·class="p"·data-group-id="1627691890-4">}</span><span·class="p">.</span><span·class="w"> |
| 251 | </span><span·class="p"·data-group-id="8579724870-5">{</span><span·class="ss">init</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">node1</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8579724870-6">[</span><span·class="p"·data-group-id="8579724870-7">{</span><span·class="ss">node_start</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8579724870-8">[</span><span·class="p"·data-group-id="8579724870-9">{</span><span·class="ss">callback_module</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">my_slave_callback</span><span·class="p"·data-group-id="8579724870-9">}</span><span·class="p"·data-group-id="8579724870-8">]</span><span·class="p"·data-group-id="8579724870-7">}</span><span·class="p"·data-group-id="8579724870-6">]</span><span·class="p"·data-group-id="8579724870-5">}</span><span·class="p">.</span><span·class="w"> | ||
| 252 | </span><span·class="p"·data-group-id="8579724870-10">{</span><span·class="ss">init</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8579724870-11">[</span><span·class="ss">node2</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">node3</span><span·class="p"·data-group-id="8579724870-11">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8579724870-12">{</span><span·class="ss">node_start</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8579724870-13">[</span><span·class="p"·data-group-id="8579724870-14">{</span><span·class="ss">username</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"ct_user"</span><span·class="p"·data-group-id="8579724870-14">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8579724870-15">{</span><span·class="ss">password</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"ct_password"</span><span·class="p"·data-group-id="8579724870-15">}</span><span·class="p"·data-group-id="8579724870-13">]</span><span·class="p"·data-group-id="8579724870-12">}</span><span·class="p"·data-group-id="8579724870-10">}</span><span·class="p">.</span><span·class="w"> | ||
| 253 | </span><span·class="p"·data-group-id=" | 251 | </span><span·class="p"·data-group-id="1627691890-5">{</span><span·class="ss">init</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">node1</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1627691890-6">[</span><span·class="p"·data-group-i[·...·truncated·by·diffoscope;·len:·646,·SHA:·79736b5f57b8497d33fd55fb9e7da8b5d92b63f10670e9d2f87a4126cf47b9cb·...·] |
| 252 | </span><span·class="p"·data-group-id="1627691890-10">{</span><span·class="ss">init</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1627691890-11">[</span><span·class="ss">node2</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">node3</span><span·class="p"·data-group-id="1627691890-11">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1627691890-12">{</span><span·class="ss">node_start</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1627691890-13">[</span><span·class="p"·data-group-id="1627691890-14">{</span><span·class="ss">username</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"ct_user"</span><span·class="p"·data-group-id="1627691890-14">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1627691890-15">{</span><span·class="ss">password</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"ct_password"</span><span·class="p"·data-group-id="1627691890-15">}</span><span·class="p"·data-group-id="1627691890-13">]</span><span·class="p"·data-group-id="1627691890-12">}</span><span·class="p"·data-group-id="1627691890-10">}</span><span·class="p">.</span><span·class="w"> | ||
| 253 | </span><span·class="p"·data-group-id="1627691890-16">{</span><span·class="ss">init</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">node4</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1627691890-17">{</span><span·class="ss">eval</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1627691890-18">{</span><span·class="ss">module</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">function</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1627691890-19">[</span><span·class="p"·data-group-id="1627691890-19">]</span><span·class="p"·data-group-id="1627691890-18">}</span><span·class="p"·data-group-id="1627691890-17">}</span><span·class="p"·data-group-id="1627691890-16">}</span><span·class="p">.</span></code></pre><p>This·test·specification·declares·that·<code·class="inline">node1@host1</code>·is·to·be·started·using·the | ||
| 254 | user·callback·function·<code·class="inline">callback_module:my_slave_callback/0</code>,·and·nodes | 254 | user·callback·function·<code·class="inline">callback_module:my_slave_callback/0</code>,·and·nodes |
| 255 | <code·class="inline">node1@host2</code>·and·<code·class="inline">node2@host2</code>·are·to·be·started·with·the·default·callback | 255 | <code·class="inline">node1@host2</code>·and·<code·class="inline">node2@host2</code>·are·to·be·started·with·the·default·callback |
| 256 | module·<code·class="inline">ct_slave</code>.·The·specified·username·and·password·are·used·to·log·on·to | 256 | module·<code·class="inline">ct_slave</code>.·The·specified·username·and·password·are·used·to·log·on·to |
| 257 | remote·host·<code·class="inline">host2</code>.·Also,·function·<code·class="inline">module:function/0</code>·is·evaluated·on | 257 | remote·host·<code·class="inline">host2</code>.·Also,·function·<code·class="inline">module:function/0</code>·is·evaluated·on |
| 258 | <code·class="inline">node1@host3</code>,·and·the·result·of·this·call·is·printed·to·the·log.</p><p>The·default·callback·module·<a·href="ct_slave.html"><code·class="inline">ct_slave</code></a>,·has·the·following·features:</p><ul><li>Starting·Erlang·target·nodes·on·local·or·remote·hosts·(application·<code·class="inline">SSH</code>·is | 258 | <code·class="inline">node1@host3</code>,·and·the·result·of·this·call·is·printed·to·the·log.</p><p>The·default·callback·module·<a·href="ct_slave.html"><code·class="inline">ct_slave</code></a>,·has·the·following·features:</p><ul><li>Starting·Erlang·target·nodes·on·local·or·remote·hosts·(application·<code·class="inline">SSH</code>·is |
| 259 | used·for·communication).</li><li>Ability·to·start·an·Erlang·emulator·with·more·flags·(any·flags·supported·by | 259 | used·for·communication).</li><li>Ability·to·start·an·Erlang·emulator·with·more·flags·(any·flags·supported·by |
| 260 | <code·class="inline">erl</code>·are·supported).</li><li>Supervision·of·a·node·being·started·using·internal·callback·functions.·Used·to | 260 | <code·class="inline">erl</code>·are·supported).</li><li>Supervision·of·a·node·being·started·using·internal·callback·functions.·Used·to |
| Offset 133, 50 lines modified | Offset 133, 50 lines modified | ||
| 133 | and·with·support·for·RFC·5277,·NETCONF·Event·Notifications.</p><p><a·href=""·id="Connecting"></a></p><p><em>Connecting·to·a·NETCONF·server</em></p><p>Call·<a·href="#connect/1"><code·class="inline">connect/1,2</code></a>·to·establish·a·connection·to·a·server,·then | 133 | and·with·support·for·RFC·5277,·NETCONF·Event·Notifications.</p><p><a·href=""·id="Connecting"></a></p><p><em>Connecting·to·a·NETCONF·server</em></p><p>Call·<a·href="#connect/1"><code·class="inline">connect/1,2</code></a>·to·establish·a·connection·to·a·server,·then |
| 134 | pass·the·returned·handle·to·<a·href="#session/1"><code·class="inline">session/1-3</code></a>·to·establish·a·NETCONF | 134 | pass·the·returned·handle·to·<a·href="#session/1"><code·class="inline">session/1-3</code></a>·to·establish·a·NETCONF |
| 135 | session·on·a·new·SSH·channel.·Each·call·to·<a·href="#session/1"><code·class="inline">session/1-3</code></a> | 135 | session·on·a·new·SSH·channel.·Each·call·to·<a·href="#session/1"><code·class="inline">session/1-3</code></a> |
| 136 | establishes·a·new·session·on·the·same·connection,·and·results·in·a·hello·message | 136 | establishes·a·new·session·on·the·same·connection,·and·results·in·a·hello·message |
| 137 | to·the·server.</p><p>Alternately,·<a·href="#open/1"><code·class="inline">open/1,2</code></a>·can·be·used·to·establish·a·single·session·on | 137 | to·the·server.</p><p>Alternately,·<a·href="#open/1"><code·class="inline">open/1,2</code></a>·can·be·used·to·establish·a·single·session·on |
| 138 | a·dedicated·connection.·(Or,·equivalently,·<a·href="#only_open/1"><code·class="inline">only_open/1,2</code></a> | 138 | a·dedicated·connection.·(Or,·equivalently,·<a·href="#only_open/1"><code·class="inline">only_open/1,2</code></a> |
| 139 | followed·by·<a·href="#hello/1"><code·class="inline">hello/1-3</code></a>.)</p><p>Connect/session·options·can·be·specified·in·a·configuration·file·with·entries | 139 | followed·by·<a·href="#hello/1"><code·class="inline">hello/1-3</code></a>.)</p><p>Connect/session·options·can·be·specified·in·a·configuration·file·with·entries |
| 140 | like·the·following.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="3 | 140 | like·the·following.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="3878249510-1">{</span><span·class="nf">server_id</span><span·class="p"·data-group-id="3878249510-2">(</span><span·class="p"·data-group-id="3878249510-2">)</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3878249510-3">[</[·...·truncated·by·diffoscope;·len:·235,·SHA:·266e76aa14510f42a48674926b16eb97902e398bf63e6fa57223e3640b72a8b8·...·]-1">}</span><span·class="p">.</span></code></pre><p>The·<a·href="#t:server_id/0"><code·class="inline">server_id/0</code></a>·or·an·associated·<a·href="ct.html#t:target_name/0"><code·class="inline">ct:target_name/0</code></a>·can·then·be·passed·to |
| 141 | the·aforementioned·functions·to·use·the·referenced·configuration.</p><p><a·href=""·id="Signaling"></a></p><p><em>Signaling</em></p><p>Protocol·operations·in·the·NETCONF·protocol·are·realized·as·remote·procedure | 141 | the·aforementioned·functions·to·use·the·referenced·configuration.</p><p><a·href=""·id="Signaling"></a></p><p><em>Signaling</em></p><p>Protocol·operations·in·the·NETCONF·protocol·are·realized·as·remote·procedure |
| 142 | calls·(RPCs)·from·client·to·server·and·a·corresponding·reply·from·server·to | 142 | calls·(RPCs)·from·client·to·server·and·a·corresponding·reply·from·server·to |
| 143 | client.·RPCs·are·sent·using·like-named·functions·(eg. | 143 | client.·RPCs·are·sent·using·like-named·functions·(eg. |
| 144 | <a·href="#edit_config/3"><code·class="inline">edit_config/3-5</code></a>·to·send·an·edit-config·RPC),·with·the | 144 | <a·href="#edit_config/3"><code·class="inline">edit_config/3-5</code></a>·to·send·an·edit-config·RPC),·with·the |
| 145 | server·reply·as·return·value.·There·are·functions·for·each·RPC·defined·in·RFC | 145 | server·reply·as·return·value.·There·are·functions·for·each·RPC·defined·in·RFC |
| 146 | 6241·and·the·create-subscription·RPC·from·RFC·5277,·all·of·which·are·wrappers·on | 146 | 6241·and·the·create-subscription·RPC·from·RFC·5277,·all·of·which·are·wrappers·on |
| 147 | <a·href="#send_rpc/2"><code·class="inline">send_rpc/2,3</code></a>,·that·can·be·used·to·send·an·arbitrary·RPC·not | 147 | <a·href="#send_rpc/2"><code·class="inline">send_rpc/2,3</code></a>,·that·can·be·used·to·send·an·arbitrary·RPC·not |
| 148 | defined·in·RFC·6241·or·RFC·5277.</p><p>All·of·the·signaling·functions·have·one·variant·with·a·<code·class="inline">Timeout</code>·argument·and | 148 | defined·in·RFC·6241·or·RFC·5277.</p><p>All·of·the·signaling·functions·have·one·variant·with·a·<code·class="inline">Timeout</code>·argument·and |
| 149 | one·without,·corresponding·to·an·infinite·timeout.·The·latter·is·inappropriate | 149 | one·without,·corresponding·to·an·infinite·timeout.·The·latter·is·inappropriate |
| 150 | in·most·cases·since·a·non-response·by·the·server·or·a·missing·message-id·causes | 150 | in·most·cases·since·a·non-response·by·the·server·or·a·missing·message-id·causes |
| 151 | the·call·to·hang·indefinitely.</p><p><a·href=""·id="Logging"></a></p><p><em>Logging</em></p><p>The·NETCONF·server·uses·<code·class="inline">error_logger</code>·for·logging·of·NETCONF·traffic.·A·special | 151 | the·call·to·hang·indefinitely.</p><p><a·href=""·id="Logging"></a></p><p><em>Logging</em></p><p>The·NETCONF·server·uses·<code·class="inline">error_logger</code>·for·logging·of·NETCONF·traffic.·A·special |
| 152 | purpose·error·handler·is·implemented·in·<code·class="inline">ct_conn_log_h</code>.·To·use·this·error | 152 | purpose·error·handler·is·implemented·in·<code·class="inline">ct_conn_log_h</code>.·To·use·this·error |
| 153 | handler,·add·the·<code·class="inline">cth_conn_log</code>·hook·in·the·test·suite,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">suite</span><span·class="p"·data-group-id=" | 153 | handler,·add·the·<code·class="inline">cth_conn_log</code>·hook·in·the·test·suite,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">suite</span><span·class="p"·data-group-id="3697110257-1">(</span><span·class="p"·data-group-id="3697110257-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 154 | ····</span><span·class="p"·data-group-id=" | 154 | ····</span><span·class="p"·data-group-id="3697110257-2">[</span><span·class="p"·data-group-id="3697110257-3">{</span><span·class="ss">ct_hooks</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3697110257-4">[</span><span·class="p"·data-group-id="3697110257-5">{</[·...·truncated·by·diffoscope;·len:·937,·SHA:·4b653b050fc680499afa394a9a4934f1ba2326d61ad5538d2332196c46ee747e·...·]-2">]</span><span·class="p">.</span></code></pre><p><code·class="inline">conn_log_mod()</code>·is·the·name·of·the·<code·class="inline">Common·Test</code>·module·implementing·the |
| 155 | connection·protocol,·for·example,·<code·class="inline">ct_netconfc</code>.</p><p>Hook·option·<code·class="inline">log_type</code>·specifies·the·type·of·logging:</p><ul><li><p><strong><code·class="inline">raw</code></strong>·-·The·sent·and·received·NETCONF·data·is·logged·to·a·separate·text | 155 | connection·protocol,·for·example,·<code·class="inline">ct_netconfc</code>.</p><p>Hook·option·<code·class="inline">log_type</code>·specifies·the·type·of·logging:</p><ul><li><p><strong><code·class="inline">raw</code></strong>·-·The·sent·and·received·NETCONF·data·is·logged·to·a·separate·text |
| 156 | file·"as·is"·without·any·formatting.·A·link·to·the·file·is·added·to·the·test | 156 | file·"as·is"·without·any·formatting.·A·link·to·the·file·is·added·to·the·test |
| 157 | case·HTML·log.</p></li><li><p><strong><code·class="inline">pretty</code></strong>·-·The·sent·and·received·NETCONF·data·is·logged·to·a·separate·text | 157 | case·HTML·log.</p></li><li><p><strong><code·class="inline">pretty</code></strong>·-·The·sent·and·received·NETCONF·data·is·logged·to·a·separate·text |
| 158 | file·with·XML·data·nicely·indented.·A·link·to·the·file·is·added·to·the·test | 158 | file·with·XML·data·nicely·indented.·A·link·to·the·file·is·added·to·the·test |
| 159 | case·HTML·log.</p></li><li><p><strong><code·class="inline">html·(default)</code></strong>·-·The·sent·and·received·NETCONF·traffic·is·pretty·printed | 159 | case·HTML·log.</p></li><li><p><strong><code·class="inline">html·(default)</code></strong>·-·The·sent·and·received·NETCONF·traffic·is·pretty·printed |
| 160 | directly·in·the·test·case·HTML·log.</p></li><li><p><strong><code·class="inline">silent</code></strong>·-·NETCONF·traffic·is·not·logged.</p></li></ul><p>By·default,·all·NETCONF·traffic·is·logged·in·one·single·log·file.·However, | 160 | directly·in·the·test·case·HTML·log.</p></li><li><p><strong><code·class="inline">silent</code></strong>·-·NETCONF·traffic·is·not·logged.</p></li></ul><p>By·default,·all·NETCONF·traffic·is·logged·in·one·single·log·file.·However, |
| 161 | different·connections·can·be·logged·in·separate·files.·To·do·this,·use·hook | 161 | different·connections·can·be·logged·in·separate·files.·To·do·this,·use·hook |
| 162 | option·<code·class="inline">hosts</code>·and·list·the·names·of·the·servers/connections·to·be·used·in·the | 162 | option·<code·class="inline">hosts</code>·and·list·the·names·of·the·servers/connections·to·be·used·in·the |
| 163 | suite.·The·connections·must·be·named·for·this·to·work,·that·is,·they·must·be | 163 | suite.·The·connections·must·be·named·for·this·to·work,·that·is,·they·must·be |
| 164 | opened·with·<a·href="#open/2"><code·class="inline">open/2</code></a>.</p><p>Option·<code·class="inline">hosts</code>·has·no·effect·if·<code·class="inline">log_type</code>·is·set·to·<code·class="inline">html</code>·or·<code·class="inline">silent</code>.</p><p>The·hook·options·can·also·be·specified·in·a·configuration·file·with | 164 | opened·with·<a·href="#open/2"><code·class="inline">open/2</code></a>.</p><p>Option·<code·class="inline">hosts</code>·has·no·effect·if·<code·class="inline">log_type</code>·is·set·to·<code·class="inline">html</code>·or·<code·class="inline">silent</code>.</p><p>The·hook·options·can·also·be·specified·in·a·configuration·file·with |
| 165 | configuration·variable·<code·class="inline">ct_conn_log</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="2707793058-1">{</span><span·class="ss">ct_conn_log</span><span·class="p">,</span><span·class="p"·data-group-id="2707793058-2">[</span><span·class="p"·data-group-id="2707793058-3">{</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">conn_log_mod</span><span·class="p"·data-group-id="2707793058-4">(</span><span·class="p"·data-group-id="2707793058-4">)</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">conn_log_options</span><span·class="p"·data-group-id="2707793058-5">(</span><span·class="p"·data-group-id="2707793058-5">)</span><span·class="p"·data-group-id="2707793058-3">}</span><span·class="p"·data-group-id="2707793058-2">]</span><span·class="p"·data-group-id="2707793058-1">}</span><span·class="p">.</span></code></pre><p>For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="2738294934-1">{</span><span·class="ss">ct_conn_log</span><span·class="p">,</span><span·class="p"·data-group-id="2738294934-2">[</span><span·class="p"·data-group-id="2738294934-3">{</span><span·class="ss">ct_netconfc</span><span·class="p">,</span><span·class="p"·data-group-id="2738294934-4">[</span><span·class="p"·data-group-id="2738294934-5">{</span><span·class="ss">log_type</span><span·class="p">,</span><span·class="ss">pretty</span><span·class="p"·data-group-id="2738294934-5">}</span><span·class="p">,</span><span·class="w"> | ||
| 166 | 165 | configuration·variable·<code·class="inline">ct_conn_log</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="4248659187-1">{</span><span·class="ss">ct_conn_log</span><span·class="p">,</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·1338,·SHA:·9e0eba58fac1c7b169dbbb9f465778c494b85cc242e71eeeaa2c1125cf64336c·...·] | |
| 166 | ····························</span><span·class="p"·data-group-id="1491687853-6">{</span><span·class="ss">hosts</span><span·class="p">,</span><span·class="p"·data-group-id="1491687853-7">[</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">key_or_name</span><span·class="p"·data-group-id="1491687853-8">(</span><span·class="p"·data-group-id="1491687853-8">)</span><span·class="p"·data-group-id="1491687853-7">]</span><span·class="p"·data-group-id="1491687853-6">}</span><span·class="p"·data-group-id="1491687853-4">]</span><span·class="p"·data-group-id="1491687853-3">}</span><span·class="p"·data-group-id="1491687853-2">]</span><span·class="p"·data-group-id="1491687853-1">}</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Hook·options·specified·in·a·configuration·file·overwrite·the·hard-coded·hook | ||
| 167 | options·in·the·test·suite.</p></section><p><em>Logging·Example·1:</em></p><p><a·href=""·id="Logging_example_1"></a></p><p>The·following·<code·class="inline">ct_hooks</code>·statement·causes·pretty·printing·of·NETCONF·traffic·to | 167 | options·in·the·test·suite.</p></section><p><em>Logging·Example·1:</em></p><p><a·href=""·id="Logging_example_1"></a></p><p>The·following·<code·class="inline">ct_hooks</code>·statement·causes·pretty·printing·of·NETCONF·traffic·to |
| 168 | separate·logs·for·the·connections·named·<code·class="inline">nc_server1</code>·and·<code·class="inline">nc_server2</code>.·Any·other | 168 | separate·logs·for·the·connections·named·<code·class="inline">nc_server1</code>·and·<code·class="inline">nc_server2</code>.·Any·other |
| 169 | connections·are·logged·to·default·NETCONF·log.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">suite</span><span·class="p"·data-group-id=" | 169 | connections·are·logged·to·default·NETCONF·log.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">suite</span><span·class="p"·data-group-id="8479298820-1">(</span><span·class="p"·data-group-id="8479298820-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 170 | ···</span><span·class="p"·data-group-id=" | 170 | ···</span><span·class="p"·data-group-id="8479298820-2">[</span><span·class="p"·data-group-id="8479298820-3">{</span><span·class="ss">ct_hooks</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8479298820-4">[</span><span·class="p"·data-group-id="8479298820-5">{</[·...·truncated·by·diffoscope;·len:·487,·SHA:·36f4e3601ba24ad331ccaf6a454a1295db2e3e0187e6a4fb7f86390a447523fc·...·]-9">}</span><span·class="p">}</span><span·class="p">,</span><span·class="w"> |
| 171 | ··············································</span><span·class="p"·data-group-id="5034465762-10">{</span><span·class="ss">hosts</span><span·class="p">,</span><span·class="p"·data-group-id="5034465762-11">[</span><span·class="ss">nc_server1</span><span·class="p">,</span><span·class="ss">nc_server2</span><span·class="p"·data-group-id="5034465762-11">]</span><span·class="p"·data-group-id="5034465762-10">}</span><span·class="p"·data-group-id="5034465762-8">]</span><span·class="p"·data-group-id="5034465762-7">}</span><span·class="w"> | ||
| 172 | ·······························</span><span·class="p"·data-group-id="5034465762-6">]</span><span·class="p"·data-group-id="5034465762-5">}</span><span·class="p"·data-group-id="5034465762-4">]</span><span·class="p"·data-group-id="5034465762-3">}</span><span·class="p"·data-group-id="5034465762-2">]</span><span·class="p">.</span></code></pre><p>Connections·must·be·opened·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">open</span><span·class="p"·data-group-id="9463201355-1">(</span><span·class="ss">nc_server1</span><span·class="p">,</span><span·class="p"·data-group-id="9463201355-2">[</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="9463201355-2">]</span><span·class="p"·data-group-id="9463201355-1">)</span><span·class="p">,</span><span·class="w"> | ||
| 173 | </span><span·class="nf">open</span><span·class="p"·data-group-id="9463201355-3">(</span><span·class="ss">nc_server2</span><span·class="p">,</span><span·class="p"·data-group-id="9463201355-4">[</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="9463201355-4">]</span><span·class="p"·data-group-id="9463201355-3">)</span><span·class="p">.</span></code></pre><p><em>Logging·Example·2:</em></p><p><a·href=""·id="Logging_example_2"></a></p><p>The·following·configuration·file·causes·raw·logging·of·all·NETCONF·traffic·in·to | ||
| 174 | one·single·text·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="3519087353-1">{</span><span·class="ss">ct_conn_log</span><span·class="p">,</span><span·class="p"·data-group-id="3519087353-2">[</span><span·class="p"·data-group-id="3519087353-3">{</span><span·class="ss">ct_netconfc</span><span·class="p">,</span><span·class="p"·data-group-id="3519087353-4">[</span><span·class="p"·data-group-id="3519087353-5">{</span><span·class="ss">log_type</span><span·class="p">,</span><span·class="ss">raw</span><span·class="p"·data-group-id="3519087353-5">}</span><span·class="p"·data-group-id="3519087353-4">]</span><span·class="p"·data-group-id="3519087353-3">}</span><span·class="p"·data-group-id="3519087353-2">]</span><span·class="p"·data-group-id="3519087353-1">}</span><span·class="p">.</span></code></pre><p>The·<code·class="inline">ct_hooks</code>·statement·must·look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">suite</span><span·class="p"·data-group-id="0094769476-1">(</span><span·class="p"·data-group-id="0094769476-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | ||
| 175 | ···· | 171 | ··············································</span><span·class="p"·data-group-id="8479298820-10">{</span><span·class="ss">hosts</span><span·class="p">,</span><span·class="p"·data-group-id="8479298820-11">[</span><span·class="ss">nc_server1</span><span·class=[·...·truncated·by·diffoscope;·len:·276,·SHA:·14669949de16c799b2d6b6b68983028cf9adbdea849f617b2f9dc1c2330fe43a·...·] |
| 172 | ·······························</span><span·class="p"·data-group-id="8479298820-6">]</span><span·class="p"·data-group-id="8479298820-5">}</span><span·class="p"·data-group-id="8479298820-4">]</span><span·class="p"·data-group-id="8479298820-3">}</span><span·class="p"·data-group-id="8479298820-2">]</span><span·class="p">.</span></code></pre><p>Connections·must·be·opened·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">open</span><span·class="p"·data-group-id="4839809577-1">(</span><span·class="ss">nc_server1</span><span·class="p">,</span><span·class="p"·data-group-id="4839809577-2">[</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="4839809577-2">]</span><span·class="p"·data-group-id="4839809577-1">)</span><span·class="p">,</span><span·class="w"> | ||
| 173 | </span><span·class="nf">open</span><span·class="p"·data-group-id="4839809577-3">(</span><span·class="ss">nc_server2</span><span·class="p">,</span><span·class="p"·data-group-id="4839809577-4">[</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="4839809577-4">]</span><span·class="p"·data-group-id="4839809577-3">)</span><span·class="p">.</span></code></pre><p><em>Logging·Example·2:</em></p><p><a·href=""·id="Logging_example_2"></a></p><p>The·following·configuration·file·causes·raw·logging·of·all·NETCONF·traffic·in·to | ||
| 174 | one·single·text·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="4251485275-1">{</span><span·class="ss">ct_conn_log</span><span·class="p">,</span><span·class="p"·data-group-id="4251485275-2">[</span><span·class="p"·data-group-id="4251485275-3">{</span><span·class="ss">ct_netconfc</span><span·class="p">,</span><span·class="p"·data-group-id="4251485275-4">[</span><span·class="p"·data-group-id="4251485275-5">{</span><span·class="ss">log_type</span><span·class="p">,</span><span·class="ss">raw</span><span·class="p"·data-group-id="4251485275-5">}</span><span·class="p"·data-group-id="4251485275-4">]</span><span·class="p"·data-group-id="4251485275-3">}</span><span·class="p"·data-group-id="4251485275-2">]</span><span·class="p"·data-group-id="4251485275-1">}</span><span·class="p">.</span></code></pre><p>The·<code·class="inline">ct_hooks</code>·statement·must·look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">suite</span><span·class="p"·data-group-id="7730259177-1">(</span><span·class="p"·data-group-id="7730259177-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | ||
| 175 | ····</span><span·class="p"·data-group-id="7730259177-2">[</span><span·class="p"·data-group-id="7730259177-3">{</span><span·class="ss">ct_hooks</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7730259177-4">[</span><span·class="p"·data-group-id="7730259177-5">{</span><span·class="ss">cth_conn_log</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7730259177-6">[</span><span·class="p"·data-group-id="7730259177-6">]</span><span·class="p"·data-group-id="7730259177-5">}</span><span·class="p"·data-group-id="7730259177-4">]</span><span·class="p"·data-group-id="7730259177-3">}</span><span·class="p"·data-group-id="7730259177-2">]</span><span·class="p">.</span></code></pre><p>The·same·<code·class="inline">ct_hooks</code>·statement·without·the·configuration·file·would·cause·HTML | ||
| 176 | logging·of·all·NETCONF·connections·in·to·the·test·case·HTML·log.</p> | 176 | logging·of·all·NETCONF·connections·in·to·the·test·case·HTML·log.</p> |
| 177 | ····</section> | 177 | ····</section> |
| 178 | </div> | 178 | </div> |
| 179 | ··<section·id="summary"·class="details-list"> | 179 | ··<section·id="summary"·class="details-list"> |
| 180 | ····<h1·class="section-heading"> | 180 | ····<h1·class="section-heading"> |
| Offset 2097, 16 lines modified | Offset 2097, 16 lines modified | ||
| 2097 | ·························Result·::·ok·|·{error,·<a·href="#t:error_reason/0">error_reason</a>()}.</pre> | 2097 | ·························Result·::·ok·|·{error,·<a·href="#t:error_reason/0">error_reason</a>()}.</pre> |
| 2098 | ······</div> | 2098 | ······</div> |
| 2099 | <p>Edits·configuration·data.</p><p>By·default·only·the·running·target·is·available,·unless·the·server·includes | 2099 | <p>Edits·configuration·data.</p><p>By·default·only·the·running·target·is·available,·unless·the·server·includes |
| 2100 | <code·class="inline">:candidate</code>·or·<code·class="inline">:startup</code>·in·its·list·of·capabilities.</p><p><code·class="inline">OptParams</code>·can·be·used·for·specifying·optional·parameters·(<code·class="inline">default-operation</code>, | 2100 | <code·class="inline">:candidate</code>·or·<code·class="inline">:startup</code>·in·its·list·of·capabilities.</p><p><code·class="inline">OptParams</code>·can·be·used·for·specifying·optional·parameters·(<code·class="inline">default-operation</code>, |
| 2101 | <code·class="inline">test-option</code>,·or·<code·class="inline">error-option</code>)·to·be·added·to·the·<code·class="inline">edit-config</code>·request.·The | 2101 | <code·class="inline">test-option</code>,·or·<code·class="inline">error-option</code>)·to·be·added·to·the·<code·class="inline">edit-config</code>·request.·The |
| 2102 | value·must·be·a·list·containing·valid·simple·XML,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 2102 | value·must·be·a·list·containing·valid·simple·XML,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8471232259-1">[</span><span·class="p"·data-group-id="8471232259-2">{</span><span·class="ss">'default-operation'</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8471232259-3">[</span><span·class="s">"none&qu[·...·truncated·by·diffoscope;·len:·104,·SHA:·e93062e4e364796b22aae5ce4bd2484497ff55751c5f3efd5212f1d4eaa21dc6·...·]-2">}</span><span·class="p">,</span><span·class="w"> |
| 2103 | ·</span><span·class="p"·data-group-id=" | 2103 | ·</span><span·class="p"·data-group-id="8471232259-4">{</span><span·class="ss">'error-option'</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8471232259-5">[</span><span·class="s">"rollback-on-error"</span><span·class="p"·data-group-id="8471[·...·truncated·by·diffoscope;·len:·112,·SHA:·9fb984bdecce6a6249ed445112971ed6c2e4f37d98ccecc31393ae354605445f·...·]-1">]</span></code></pre><p>If·<code·class="inline">OptParams</code>·is·not·given,·the·default·value·<code·class="inline">[]</code>·is·used.</p> |
| 2104 | ··</section> | 2104 | ··</section> |
| 2105 | </section> | 2105 | </section> |
| 2106 | <section·class="detail"·id="get/2"> | 2106 | <section·class="detail"·id="get/2"> |
| 2107 | ··<div·class="detail-header"> | 2107 | ··<div·class="detail-header"> |
| 2108 | ····<a·href="#get/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 2108 | ····<a·href="#get/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 2109 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 2109 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 131 | <p>Support·in·Common·Test·for·running·property-based·tests.</p><p>This·module·helps·running·property-based·tests·in·the·<code·class="inline">Common·Test</code>·framework. | 131 | <p>Support·in·Common·Test·for·running·property-based·tests.</p><p>This·module·helps·running·property-based·tests·in·the·<code·class="inline">Common·Test</code>·framework. |
| 132 | One·(or·more)·of·the·property·testing·tools</p><ul><li><a·href="http://www.quviq.com">QuickCheck</a>,</li><li><a·href="https://proper-testing.github.io">PropEr</a>·or</li><li><a·href="https://github.com/krestenkrab/triq">Triq</a></li></ul><p>is·assumed·to·be·installed.</p><p>The·idea·with·this·module·is·to·have·a·<code·class="inline">Common·Test</code>·test·suite·calling·a | 132 | One·(or·more)·of·the·property·testing·tools</p><ul><li><a·href="http://www.quviq.com">QuickCheck</a>,</li><li><a·href="https://proper-testing.github.io">PropEr</a>·or</li><li><a·href="https://github.com/krestenkrab/triq">Triq</a></li></ul><p>is·assumed·to·be·installed.</p><p>The·idea·with·this·module·is·to·have·a·<code·class="inline">Common·Test</code>·test·suite·calling·a |
| 133 | property·testing·tool·with·special·property·test·suites·as·defined·by·that·tool. | 133 | property·testing·tool·with·special·property·test·suites·as·defined·by·that·tool. |
| 134 | The·tests·are·collected·in·the·<code·class="inline">test</code>·directory·of·the·application.·The·<code·class="inline">test</code> | 134 | The·tests·are·collected·in·the·<code·class="inline">test</code>·directory·of·the·application.·The·<code·class="inline">test</code> |
| 135 | directory·has·a·subdirectory·<code·class="inline">property_test</code>,·where·everything·needed·for·the | 135 | directory·has·a·subdirectory·<code·class="inline">property_test</code>,·where·everything·needed·for·the |
| 136 | property·tests·are·collected.·The·usual·Erlang·application·directory·structure | 136 | property·tests·are·collected.·The·usual·Erlang·application·directory·structure |
| 137 | is·assumed.</p><p>A·typical·<code·class="inline">Common·Test</code>·test·suite·using·<code·class="inline">ct_property_test</code>·is·organized·as | 137 | is·assumed.</p><p>A·typical·<code·class="inline">Common·Test</code>·test·suite·using·<code·class="inline">ct_property_test</code>·is·organized·as |
| 138 | follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 138 | follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="9452088598-1">(</span><span·class="ss">my_prop_test_SUITE</span><span·class="p"·data-group-id="9452088598-1">)</span><span·class="p">.</span><span·class="w"> |
| 139 | </span><span·class="p">-</span><span·class="na">compile</span><span·class="p"·data-group-id=" | 139 | </span><span·class="p">-</span><span·class="na">compile</span><span·class="p"·data-group-id="9452088598-2">(</span><span·class="ss">export_all</span><span·class="p"·data-group-id="9452088598-2">)</span><span·class="p">.</span><span·class="w"> |
| 140 | </span><span·class="w"> | 140 | </span><span·class="w"> |
| 141 | </span><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id=" | 141 | </span><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="9452088598-3">(</span><span·class="s">"common_test/include/ct.hrl"</span><span·class="p"·data-group-id="9452088598-3">)</span><span·class="p">.</span><span·class="w"> |
| 142 | </span><span·class="nf">all</span><span·class="p"·data-group-id=" | 142 | </span><span·class="nf">all</span><span·class="p"·data-group-id="9452088598-4">(</span><span·class="p"·data-group-id="9452088598-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="9452088598-5">[</span><span·class="ss">prop_ftp_case</span><span·class="p"[·...·truncated·by·diffoscope;·len:·26,·SHA:·0dadf2a6028d64b86b56020f03716b23cad5103b8753bc1d6285f135ecf062b0·...·]-5">]</span><span·class="p">.</span><span·class="w"> |
| 143 | </span><span·class="nf">init_per_suite</span><span·class="p"·data-group-id=" | 143 | </span><span·class="nf">init_per_suite</span><span·class="p"·data-group-id="9452088598-6">(</span><span·class="n">Config</span><span·class="p"·data-group-id="9452088598-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 144 | ····</span><span·class="nc">ct_property_test</span><span·class="p">:</span><span·class="nf">init_per_suite</span><span·class="p"·data-group-id=" | 144 | ····</span><span·class="nc">ct_property_test</span><span·class="p">:</span><span·class="nf">init_per_suite</span><span·class="p"·data-group-id="9452088598-7">(</span><span·class="n">Config</span><span·class="p"·data-group-id="9452088598-7">)</span><span·class="p">.</span><span·class="w"> |
| 145 | </span><span·class="c1">%%%----·test·case</span><span·class="w"> | 145 | </span><span·class="c1">%%%----·test·case</span><span·class="w"> |
| 146 | </span><span·class="nf">prop_ftp_case</span><span·class="p"·data-group-id=" | 146 | </span><span·class="nf">prop_ftp_case</span><span·class="p"·data-group-id="9452088598-8">(</span><span·class="n">Config</span><span·class="p"·data-group-id="9452088598-8">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 147 | ····</span><span·class="nc">ct_property_test</span><span·class="p">:</span><span·class="nf">quickcheck</span><span·class="p"·data-group-id=" | 147 | ····</span><span·class="nc">ct_property_test</span><span·class="p">:</span><span·class="nf">quickcheck</span><span·class="p"·data-group-id="9452088598-9">(</span><span·class="w"> |
| 148 | ······</span><span·class="nc">ftp_simple_client_server</span><span·class="p">:</span><span·class="nf">prop_ftp</span><span·class="p"·data-group-id=" | 148 | ······</span><span·class="nc">ftp_simple_client_server</span><span·class="p">:</span><span·class="nf">prop_ftp</span><span·class="p"·data-group-id="9452088598-10">(</span><span·class="p"·data-group-id="9452088598-10">)</span><span·class="p">,</span><span·class="w"> |
| 149 | ······</span><span·class="n">Config</span><span·class="w"> | 149 | ······</span><span·class="n">Config</span><span·class="w"> |
| 150 | ·····</span><span·class="p"·data-group-id=" | 150 | ·····</span><span·class="p"·data-group-id="9452088598-9">)</span><span·class="p">.</span></code></pre><p>and·the·the·property·test·module·(in·this·example |
| 151 | <code·class="inline">ftp_simple_client_server.erl</code>)·as·almost·a·usual·property·testing·module·(More | 151 | <code·class="inline">ftp_simple_client_server.erl</code>)·as·almost·a·usual·property·testing·module·(More |
| 152 | examples·are·in·<a·href="ct_property_test_chapter.html">the·User's·Guide</a>):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="6106562558-1">(</span><span·class="ss">ftp_simple_client_server</span><span·class="p"·data-group-id="6106562558-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 153 | 152 | examples·are·in·<a·href="ct_property_test_chapter.html">the·User's·Guide</a>):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="9633269652-1">(</span><span·class="ss">ft[·...·truncated·by·diffoscope;·len:·72,·SHA:·d2a0465c4b8c8e0f737e81a6379fd4a43a5f2967fe64fa7fd081d47501efa50b·...·]">)</span><span·class="p">.</span><span·class="w"> | |
| 153 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="9633269652-2">(</span><span·class="p"·data-group-id="9633269652-3">[</span><span·class="ss">prop_ftp</span><span·class="p">/</span><span·class="mi">0</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="9633269652-3">]</span><span·class="p"·data-group-id="9633269652-2">)</span><span·class="p">.</span><span·class="w"> | ||
| 154 | </span><span·class="w"> | 154 | </span><span·class="w"> |
| 155 | </span><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id=" | 155 | </span><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="9633269652-4">(</span><span·class="s">"common_test/include/ct_property_test.hrl"</span><span·class="p"·data-group-id="9633269652-4">)</span><span·class="p">.</span><span·class="w"> |
| 156 | </span><span·class="nf">prop_ftp</span><span·class="p"·data-group-id=" | 156 | </span><span·class="nf">prop_ftp</span><span·class="p"·data-group-id="9633269652-5">(</span><span·class="p"·data-group-id="9633269652-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 157 | ····</span><span·class="o">?</span><span·class="n">FORALL</span><span·class="p"·data-group-id=" | 157 | ····</span><span·class="o">?</span><span·class="n">FORALL</span><span·class="p"·data-group-id="9633269652-6">(</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre> |
| 158 | ····</section> | 158 | ····</section> |
| 159 | </div> | 159 | </div> |
| 160 | ··<section·id="summary"·class="details-list"> | 160 | ··<section·id="summary"·class="details-list"> |
| 161 | ····<h1·class="section-heading"> | 161 | ····<h1·class="section-heading"> |
| 162 | ······<a·class="hover-link"·href="#summary"> | 162 | ······<a·class="hover-link"·href="#summary"> |
| Offset 842, 15 lines modified | Offset 842, 15 lines modified | ||
| 842 | <code·class="inline">{fail,·Explanation}</code>.</p><p>If·support·is·found,·the·option·<code·class="inline">{property_test_tool,ToolModule}</code>·with·the | 842 | <code·class="inline">{fail,·Explanation}</code>.</p><p>If·support·is·found,·the·option·<code·class="inline">{property_test_tool,ToolModule}</code>·with·the |
| 843 | selected·tool·main·module·name·(<code·class="inline">eqc</code>,·<code·class="inline">proper</code>·or·<code·class="inline">triq</code>)·is·added·to·the·list | 843 | selected·tool·main·module·name·(<code·class="inline">eqc</code>,·<code·class="inline">proper</code>·or·<code·class="inline">triq</code>)·is·added·to·the·list |
| 844 | <code·class="inline">Config</code>·which·then·is·returned.</p><p>The·property·tests·are·assumed·to·be·in·a·subdirectory·named·<code·class="inline">property_test</code>. | 844 | <code·class="inline">Config</code>·which·then·is·returned.</p><p>The·property·tests·are·assumed·to·be·in·a·subdirectory·named·<code·class="inline">property_test</code>. |
| 845 | All·found·Erlang·files·in·that·directory·are·compiled·with·one·of·the·macros | 845 | All·found·Erlang·files·in·that·directory·are·compiled·with·one·of·the·macros |
| 846 | <code·class="inline">'EQC'</code>,·<code·class="inline">'PROPER'</code>·or·<code·class="inline">'TRIQ'</code>·set,·depending·on·which·tool·that·is·first | 846 | <code·class="inline">'EQC'</code>,·<code·class="inline">'PROPER'</code>·or·<code·class="inline">'TRIQ'</code>·set,·depending·on·which·tool·that·is·first |
| 847 | found.·This·could·make·parts·of·the·Erlang·property·tests·code·to·be·included·or | 847 | found.·This·could·make·parts·of·the·Erlang·property·tests·code·to·be·included·or |
| 848 | excluded·with·the·macro·directives·<code·class="inline">-ifdef(Macro).</code>·or·<code·class="inline">-ifndef(Macro).</code>.</p><p>The·file(s)·in·the·<code·class="inline">property_test</code>·subdirectory·could,·or·should,·include·the | 848 | excluded·with·the·macro·directives·<code·class="inline">-ifdef(Macro).</code>·or·<code·class="inline">-ifndef(Macro).</code>.</p><p>The·file(s)·in·the·<code·class="inline">property_test</code>·subdirectory·could,·or·should,·include·the |
| 849 | ct_property_test·include·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id=" | 849 | ct_property_test·include·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="0177304526-1">(</span><span·class="s">"common_test/include/ct_property_test.hrl"</span><span·class="p"·data-group-id="0177304526-1">)</span><span·class="p">.</span></code></pre><p>This·included·file·will:</p><ul><li>Include·the·correct·tool's·include·file</li><li>Set·the·macro·<code·class="inline">'MOD_eqc'</code>·to·the·correct·module·name·for·the·selected·tool. |
| 850 | That·is,·the·macro·<code·class="inline">'MOD_eqc'</code>·is·set·to·either·<code·class="inline">eqc</code>,·<code·class="inline">proper</code>·or·<code·class="inline">triq</code>.</li></ul> | 850 | That·is,·the·macro·<code·class="inline">'MOD_eqc'</code>·is·set·to·either·<code·class="inline">eqc</code>,·<code·class="inline">proper</code>·or·<code·class="inline">triq</code>.</li></ul> |
| 851 | ··</section> | 851 | ··</section> |
| 852 | </section> | 852 | </section> |
| 853 | <section·class="detail"·id="num_calls/1"> | 853 | <section·class="detail"·id="num_calls/1"> |
| 854 | ··<div·class="detail-header"> | 854 | ··<div·class="detail-header"> |
| 855 | ····<a·href="#num_calls/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 855 | ····<a·href="#num_calls/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 947, 34 lines modified | Offset 947, 34 lines modified | ||
| 947 | ····························Config·::·<a·href="../../../../lib/stdlib-6.2.1/doc/html/proplists.html#t:proplist/0">proplists:proplist</a>(), | 947 | ····························Config·::·<a·href="../../../../lib/stdlib-6.2.1/doc/html/proplists.html#t:proplist/0">proplists:proplist</a>(), |
| 948 | ····························Options0·::·<a·href="../../../../lib/stdlib-6.2.1/doc/html/proplists.html#t:proplist/0">proplists:proplist</a>().</pre> | 948 | ····························Options0·::·<a·href="../../../../lib/stdlib-6.2.1/doc/html/proplists.html#t:proplist/0">proplists:proplist</a>().</pre> |
| 949 | ······</div> | 949 | ······</div> |
| 950 | <p>Presents·the·result·of·<em>stateful·(statem)·property·testing</em>·using·the·aggregate | 950 | <p>Presents·the·result·of·<em>stateful·(statem)·property·testing</em>·using·the·aggregate |
| 951 | function·in·PropEr,·QuickCheck·or·other·similar·property·testing·tool.</p><p>It·is·assumed·to·be·called·inside·the·property·called·by·<a·href="#quickcheck/2"><code·class="inline">quickcheck/2</code></a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 951 | function·in·PropEr,·QuickCheck·or·other·similar·property·testing·tool.</p><p>It·is·assumed·to·be·called·inside·the·property·called·by·<a·href="#quickcheck/2"><code·class="inline">quickcheck/2</code></a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 952 | </span><span·class="n">RunResult</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">run_parallel_commands</span><span·class="p"·data-group-id="5 | 952 | </span><span·class="n">RunResult</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">run_parallel_commands</span><span·class="p"·data-group-id="7955078467-1">(</span><span·class="o">?</span><span·class="n">MODULE</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cmds</span><span·class="p"·data-group-id="7955078467-1">)</span><span·class="p">,</span><span·class="w"> |
| 953 | </span><span·class="nc">ct_property_test</span><span·class="p">:</span><span·class="nf">present_result</span><span·class="p"·data-group-id="5 | 953 | </span><span·class="nc">ct_property_test</span><span·class="p">:</span><span·class="nf">present_result</span><span·class="p"·data-group-id="7955078467-2">(</span><span·class="o">?</span><span·class="n">MODULE</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cmds</span><span·class="p">,</span><span·class="w">·</span><span·class="n">RunResult</span><span·class="p">,</span><s[·...·truncated·by·diffoscope;·len:·92,·SHA:·0cc7c5dcb77bd93ba801a5128f3574c4735ba3f5c53d1c8609e01d68554f21b7·...·]-2">)</span><span·class="w"> |
| 954 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>See·the·<a·href="ct_property_test_chapter.html#stateful1">User's·Guide</a>·for·an·example·of | 954 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>See·the·<a·href="ct_property_test_chapter.html#stateful1">User's·Guide</a>·for·an·example·of |
| 955 | the·usage·and·of·the·default·printout.</p><p>The·<code·class="inline">StatisticsSpec</code>·is·a·list·of·the·tuples:</p><ul><li><code·class="inline">{Title::string(),·CollectFun::fun/1}</code></li><li><code·class="inline">{Title::string(),·FrequencyFun::/0,·CollectFun::fun/1}</code></li></ul><p>Each·tuple·will·produce·one·table·in·the·order·of·their·places·in·the·list.</p><ul><li><p><code·class="inline">Title</code>·will·be·the·title·of·one·result·table</p></li><li><p><code·class="inline">CollectFun</code>·is·called·with·one·argument:·the·<code·class="inline">Cmds</code>.·It·should·return·a·list | 955 | the·usage·and·of·the·default·printout.</p><p>The·<code·class="inline">StatisticsSpec</code>·is·a·list·of·the·tuples:</p><ul><li><code·class="inline">{Title::string(),·CollectFun::fun/1}</code></li><li><code·class="inline">{Title::string(),·FrequencyFun::/0,·CollectFun::fun/1}</code></li></ul><p>Each·tuple·will·produce·one·table·in·the·order·of·their·places·in·the·list.</p><ul><li><p><code·class="inline">Title</code>·will·be·the·title·of·one·result·table</p></li><li><p><code·class="inline">CollectFun</code>·is·called·with·one·argument:·the·<code·class="inline">Cmds</code>.·It·should·return·a·list |
| 956 | of·the·values·to·be·counted.·The·following·pre-defined·functions·exist:</p><ul><li><a·href="#cmnd_names/1"><code·class="inline">ct_property_test:cmnd_names/1</code></a>·returns·a·list·of·commands·(function·calls) | 956 | of·the·values·to·be·counted.·The·following·pre-defined·functions·exist:</p><ul><li><a·href="#cmnd_names/1"><code·class="inline">ct_property_test:cmnd_names/1</code></a>·returns·a·list·of·commands·(function·calls) |
| 957 | generated·in·the·<code·class="inline">Cmnd</code>·sequence,·without·Module,·Arguments·and·other | 957 | generated·in·the·<code·class="inline">Cmnd</code>·sequence,·without·Module,·Arguments·and·other |
| 958 | details.</li><li><a·href="#num_calls/1"><code·class="inline">ct_property_test:num_calls/1</code></a>·returns·a·list·of·the·length·of·commands | 958 | details.</li><li><a·href="#num_calls/1"><code·class="inline">ct_property_test:num_calls/1</code></a>·returns·a·list·of·the·length·of·commands |
| 959 | lists</li><li><a·href="#sequential_parallel/1"><code·class="inline">ct_property_test:sequential_parallel/1</code></a>·returns·a·list·with·information | 959 | lists</li><li><a·href="#sequential_parallel/1"><code·class="inline">ct_property_test:sequential_parallel/1</code></a>·returns·a·list·with·information |
| 960 | about·sequential·and·parallel·parts·from·<code·class="inline">Tool:parallel_commands/1,2</code></li></ul></li><li><p><code·class="inline">FrequencyFun/0</code>·returns·a·fun/1·which·is·supposed·to·take·a·list·of·items·as | 960 | about·sequential·and·parallel·parts·from·<code·class="inline">Tool:parallel_commands/1,2</code></li></ul></li><li><p><code·class="inline">FrequencyFun/0</code>·returns·a·fun/1·which·is·supposed·to·take·a·list·of·items·as |
| 961 | input,·and·return·an·iolist·which·will·be·printed·as·the·table.·Per·default, | 961 | input,·and·return·an·iolist·which·will·be·printed·as·the·table.·Per·default, |
| 962 | the·number·of·each·item·is·counted·and·the·percentage·is·printed·for·each.·The | 962 | the·number·of·each·item·is·counted·and·the·percentage·is·printed·for·each.·The |
| 963 | list·[a,b,a,a,c]·could·for·example·return</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 963 | list·[a,b,a,a,c]·could·for·example·return</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="4954197068-1">[</span><span·class="s">"a·60%\n"</span><span·class="p">,</span><span·class="s">"b·20%\n"</span><span·class="p">,</span><span·class="s">"c·20%\n"</span><span·class="p"·data-group-id="4954197068-1">]</span></code></pre><p>which·will·be·printed·by·the·<code·class="inline">print_fun</code>.·The·default·<code·class="inline">print_fun</code>·will·print |
| 964 | it·as:</p><pre><code·class="text">a·60% | 964 | it·as:</p><pre><code·class="text">a·60% |
| 965 | b·20% | 965 | b·20% |
| 966 | c·20%</code></pre></li></ul><p>The·default·<code·class="inline">StatisticsSpec</code>·is:</p><ul><li><p>For·sequential·commands:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 966 | c·20%</code></pre></li></ul><p>The·default·<code·class="inline">StatisticsSpec</code>·is:</p><ul><li><p>For·sequential·commands:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="0356624014-1">[</span><span·class="p"·data-group-id="0356624014-2">{</span><span·class="s">"Function·calls"</span><span·class="p">,</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">cmnd_names</span>[·...·truncated·by·diffoscope;·len:·90,·SHA:·7efa92b5b63de7e009f658909a74464dadccf858f5fd966f568ae67a58f5ccd4·...·]-2">}</span><span·class="p">,</span><span·class="w"> |
| 967 | ·</span><span·class="p"·data-group-id=" | 967 | ·</span><span·class="p"·data-group-id="0356624014-3">{</span><span·class="s">"Length·of·command·sequences"</span><span·class="p">,</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">print_frequency_ranges</span><span·class="p">/</span><span·class="mi">0</span><span·class="p">,</span><span·class="w"> |
| 968 | ··················································</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">num_calls</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id=" | 968 | ··················································</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">num_calls</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id="0356624014-3">}</span><span·class="p"·data-group-id="0356624014-1">]</span></code></pre></li><li><p>For·parallel·commands:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="7544271148-1">[</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·322,·SHA:·3562ed524051b68a9909ccfb044d0da1d223d500eda28b36fb148509e49d03fb·...·]-2">}</span><span·class="p">,</span><span·class="w"> |
| 969 | ·</span><span·class="p"·data-group-id="7 | 969 | ·</span><span·class="p"·data-group-id="7544271148-3">{</span><span·class="s">"Function·calls"</span><span·class="p">,</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">cmnd_names</span><span·class="p">/</span><span·class="mi">1</span><span[·...·truncated·by·diffoscope;·len:·36,·SHA:·49ff813e674038128863020b25c97ce83af4f331360df2a61acc0f6a4f03d62e·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 970 | ·</span><span·class="p"·data-group-id="7 | 970 | ·</span><span·class="p"·data-group-id="7544271148-4">{</span><span·class="s">"Length·of·command·sequences"</span><span·class="p">,</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">print_frequency_ranges</span><span·class="p">/</span><span·class="mi">0</span><span·class="p">,</span><span·class="w"> |
| 971 | ··················································</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">num_calls</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id="7 | 971 | ··················································</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">num_calls</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id="7544271148-4">}</span><span·class="p"·data-group-id="7544271148-1">]</span></code></pre></li></ul> |
| 972 | ··</section> | 972 | ··</section> |
| 973 | </section> | 973 | </section> |
| 974 | <section·class="detail"·id="quickcheck/2"> | 974 | <section·class="detail"·id="quickcheck/2"> |
| 975 | ··<div·class="detail-header"> | 975 | ··<div·class="detail-header"> |
| 976 | ····<a·href="#quickcheck/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 976 | ····<a·href="#quickcheck/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 977 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 977 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 143, 59 lines modified | Offset 143, 59 lines modified | ||
| 143 | <p>The·<a·href="ct_property_test.html#">ct_property_test</a>·module·does·the·following:</p><ul><li>Compiles·the·files·with·property·tests·in·the·subdirectory·<code·class="inline">property_test</code></li><li>Tests·properties·in·those·files·using·the·first·found·Property·Testing·Tool.</li><li>Saves·the·results·-·that·is·the·printouts·-·in·the·usual·Common·Test·Log</li></ul><h2·id="introductory-example"·class="section-heading"> | 143 | <p>The·<a·href="ct_property_test.html#">ct_property_test</a>·module·does·the·following:</p><ul><li>Compiles·the·files·with·property·tests·in·the·subdirectory·<code·class="inline">property_test</code></li><li>Tests·properties·in·those·files·using·the·first·found·Property·Testing·Tool.</li><li>Saves·the·results·-·that·is·the·printouts·-·in·the·usual·Common·Test·Log</li></ul><h2·id="introductory-example"·class="section-heading"> |
| 144 | ··<a·href="#introductory-example"·class="hover-link"> | 144 | ··<a·href="#introductory-example"·class="hover-link"> |
| 145 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 145 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 146 | ··</a> | 146 | ··</a> |
| 147 | ··<span·class="text">Introductory·Example</span> | 147 | ··<span·class="text">Introductory·Example</span> |
| 148 | </h2> | 148 | </h2> |
| 149 | <p>Assume·that·we·want·to·test·the·lists:sort/1·function.</p><p>We·need·a·property·to·test·the·function.·In·normal·way,·we·create | 149 | <p>Assume·that·we·want·to·test·the·lists:sort/1·function.</p><p>We·need·a·property·to·test·the·function.·In·normal·way,·we·create |
| 150 | <code·class="inline">property_test/ct_prop.erl</code>·module·in·the·<code·class="inline">test</code>·directory·in·our·application:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 150 | <code·class="inline">property_test/ct_prop.erl</code>·module·in·the·<code·class="inline">test</code>·directory·in·our·application:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="8863989084-1">(</span><span·class="ss">ct_prop</span><span·class="p"·data-group-id="8863989084-1">)</span><span·class="p">.</span><span·class="w"> |
| 151 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 151 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="8863989084-2">(</span><span·class="p"·data-group-id="8863989084-3">[</span><span·class="ss">prop_sort</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data-group-id="8863989084-3">]</span><span·class="p"·data-group-id="8863989084-2">)</span><span·class="p">.</span><span·class="w"> |
| 152 | </span><span·class="c1">%%%·This·will·include·the·.hrl·file·for·the·installed·testing·tool:</span><span·class="w"> | 152 | </span><span·class="c1">%%%·This·will·include·the·.hrl·file·for·the·installed·testing·tool:</span><span·class="w"> |
| 153 | </span><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id=" | 153 | </span><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="8863989084-4">(</span><span·class="s">"common_test/include/ct_property_test.hrl"</span><span·class="p"·data-group-id="8863989084-4">)</span><span·class="p">.</span><span·class="w"> |
| 154 | </span><span·class="c1">%%%·The·property·we·want·to·check:</span><span·class="w"> | 154 | </span><span·class="c1">%%%·The·property·we·want·to·check:</span><span·class="w"> |
| 155 | </span><span·class="c1">%%%···For·all·possibly·unsorted·lists,</span><span·class="w"> | 155 | </span><span·class="c1">%%%···For·all·possibly·unsorted·lists,</span><span·class="w"> |
| 156 | </span><span·class="c1">%%%···the·result·of·lists:sort/1·is·sorted.</span><span·class="w"> | 156 | </span><span·class="c1">%%%···the·result·of·lists:sort/1·is·sorted.</span><span·class="w"> |
| 157 | </span><span·class="nf">prop_sort</span><span·class="p"·data-group-id=" | 157 | </span><span·class="nf">prop_sort</span><span·class="p"·data-group-id="8863989084-5">(</span><span·class="p"·data-group-id="8863989084-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 158 | ····</span><span·class="o">?</span><span·class="n">FORALL</span><span·class="p"·data-group-id=" | 158 | ····</span><span·class="o">?</span><span·class="n">FORALL</span><span·class="p"·data-group-id="8863989084-6">(</span><span·class="n">UnSorted</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">list</span><span·class="p"·data-group-id="8863989084-7">(</span><span·class="p"·data-group-id="8863989084-7">)</span><span·class="p">,</span><span·class="w"> |
| 159 | ············</span><span·class="nf">is_sorted</span><span·class="p"·data-group-id=" | 159 | ············</span><span·class="nf">is_sorted</span><span·class="p"·data-group-id="8863989084-8">(</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">sort</span><span·class="p"·data-group-id="8863989084-9">(</span><span·class="n">UnSorted</span><span·class="p"·data-group-id="8863989084-9">)</span><span·class="p"·[·...·truncated·by·diffoscope;·len:·25,·SHA:·3b80a3df22b18f7585c6b07d0a2c51fe425f940e3123fcd977be6d75c3d1616c·...·]-8">)</span><span·class="w"> |
| 160 | ···········</span><span·class="p"·data-group-id=" | 160 | ···········</span><span·class="p"·data-group-id="8863989084-6">)</span><span·class="p">.</span><span·class="w"> |
| 161 | </span><span·class="c1">%%%·Function·to·check·that·a·list·is·sorted:</span><span·class="w"> | 161 | </span><span·class="c1">%%%·Function·to·check·that·a·list·is·sorted:</span><span·class="w"> |
| 162 | </span><span·class="nf">is_sorted</span><span·class="p"·data-group-id=" | 162 | </span><span·class="nf">is_sorted</span><span·class="p"·data-group-id="8863989084-10">(</span><span·class="p"·data-group-id="8863989084-11">[</span><span·class="p"·data-group-id="8863989084-11">]</span><span·class="p"·data-group-id="8863989084-10">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 163 | ····</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> | 163 | ····</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> |
| 164 | </span><span·class="nf">is_sorted</span><span·class="p"·data-group-id=" | 164 | </span><span·class="nf">is_sorted</span><span·class="p"·data-group-id="8863989084-12">(</span><span·class="p"·data-group-id="8863989084-13">[</span><span·class="p">_</span><span·class="p"·data-group-id="8863989084-13">]</span><span·class="p"·data-group-id="8863989084-12">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 165 | ····</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> | 165 | ····</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> |
| 166 | </span><span·class="nf">is_sorted</span><span·class="p"·data-group-id=" | 166 | </span><span·class="nf">is_sorted</span><span·class="p"·data-group-id="8863989084-14">(</span><span·class="p"·data-group-id="8863989084-15">[</span><span·class="n">H1</span><span·class="p">,</span><span·class="n">H2</span><span·class="p">|</span><span·class="n">SortedTail</span><span·class="p"·data-group-id="8863989084-15">]<[·...·truncated·by·diffoscope;·len:·47,·SHA:·70bbfe960955caf0a556dd24bb442ec76ca2966f32d6272a79d495218a9ab5c2·...·]-14">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="n">H1</span><span·class="w">·</span><span·class="o">=<</span><span·class="w">·</span><span·class="n">H2</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 167 | ····</span><span·class="nf">is_sorted</span><span·class="p"·data-group-id=" | 167 | ····</span><span·class="nf">is_sorted</span><span·class="p"·data-group-id="8863989084-16">(</span><span·class="p"·data-group-id="8863989084-17">[</span><span·class="n">H2</span><span·class="p">|</span><span·class="n">SortedTail</span><span·class="p"·data-group-id="8863989084-17">]</span><span·class="p"·data-group-id="8863989084-16">)</span><span·class="p">;</span><span·class="w"> |
| 168 | </span><span·class="nf">is_sorted</span><span·class="p"·data-group-id=" | 168 | </span><span·class="nf">is_sorted</span><span·class="p"·data-group-id="8863989084-18">(</span><span·class="p">_</span><span·class="p"·data-group-id="8863989084-18">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 169 | ····</span><span·class="ss">false</span><span·class="p">.</span></code></pre><p>We·also·need·a·CommonTest·test·suite:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="2 | 169 | ····</span><span·class="ss">false</span><span·class="p">.</span></code></pre><p>We·also·need·a·CommonTest·test·suite:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="2313783586-1">(</span><span·class="ss">ct_property_test_SUITE</span><span·class="p"·data-group-id="2313783586-1">)</span><span·class="p">.</span><span·class="w"> |
| 170 | </span><span·class="p">-</span><span·class="na">compile</span><span·class="p"·data-group-id="2 | 170 | </span><span·class="p">-</span><span·class="na">compile</span><span·class="p"·data-group-id="2313783586-2">(</span><span·class="ss">export_all</span><span·class="p"·data-group-id="2313783586-2">)</span><span·class="p">.</span><span·class="w">·</span><span·class="c1">%·Only·in·tests!</span><span·class="w"> |
| 171 | </span><span·class="w"> | 171 | </span><span·class="w"> |
| 172 | </span><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="2 | 172 | </span><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="2313783586-3">(</span><span·class="s">"common_test/include/ct.hrl"</span><span·class="p"·data-group-id="2313783586-3">)</span><span·class="p">.</span><span·class="w"> |
| 173 | </span><span·class="nf">all</span><span·class="p"·data-group-id="2 | 173 | </span><span·class="nf">all</span><span·class="p"·data-group-id="2313783586-4">(</span><span·class="p"·data-group-id="2313783586-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="2313783586-5">[</span><span·class="ss">prop_sort</span><span·class="w"> |
| 174 | ·········</span><span·class="p"·data-group-id="2 | 174 | ·········</span><span·class="p"·data-group-id="2313783586-5">]</span><span·class="p">.</span><span·class="w"> |
| 175 | </span><span·class="c1">%%%·First·prepare·Config·and·compile·the·property·tests·for·the·found·tool:</span><span·class="w"> | 175 | </span><span·class="c1">%%%·First·prepare·Config·and·compile·the·property·tests·for·the·found·tool:</span><span·class="w"> |
| 176 | </span><span·class="nf">init_per_suite</span><span·class="p"·data-group-id="2 | 176 | </span><span·class="nf">init_per_suite</span><span·class="p"·data-group-id="2313783586-6">(</span><span·class="n">Config</span><span·class="p"·data-group-id="2313783586-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 177 | ····</span><span·class="nc">ct_property_test</span><span·class="p">:</span><span·class="nf">init_per_suite</span><span·class="p"·data-group-id="2 | 177 | ····</span><span·class="nc">ct_property_test</span><span·class="p">:</span><span·class="nf">init_per_suite</span><span·class="p"·data-group-id="2313783586-7">(</span><span·class="n">Config</span><span·class="p"·data-group-id="2313783586-7">)</span><span·class="p">.</span><span·class="w"> |
| 178 | </span><span·class="nf">end_per_suite</span><span·class="p"·data-group-id="2 | 178 | </span><span·class="nf">end_per_suite</span><span·class="p"·data-group-id="2313783586-8">(</span><span·class="n">Config</span><span·class="p"·data-group-id="2313783586-8">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 179 | ····</span><span·class="n">Config</span><span·class="p">.</span><span·class="w"> | 179 | ····</span><span·class="n">Config</span><span·class="p">.</span><span·class="w"> |
| 180 | </span><span·class="c1">%%%================================================================</span><span·class="w"> | 180 | </span><span·class="c1">%%%================================================================</span><span·class="w"> |
| 181 | </span><span·class="c1">%%%·Test·suites</span><span·class="w"> | 181 | </span><span·class="c1">%%%·Test·suites</span><span·class="w"> |
| 182 | </span><span·class="c1">%%%</span><span·class="w"> | 182 | </span><span·class="c1">%%%</span><span·class="w"> |
| 183 | </span><span·class="nf">prop_sort</span><span·class="p"·data-group-id="2 | 183 | </span><span·class="nf">prop_sort</span><span·class="p"·data-group-id="2313783586-9">(</span><span·class="n">Config</span><span·class="p"·data-group-id="2313783586-9">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 184 | ····</span><span·class="nc">ct_property_test</span><span·class="p">:</span><span·class="nf">quickcheck</span><span·class="p"·data-group-id="2 | 184 | ····</span><span·class="nc">ct_property_test</span><span·class="p">:</span><span·class="nf">quickcheck</span><span·class="p"·data-group-id="2313783586-10">(</span><span·class="w"> |
| 185 | ······</span><span·class="nc">ct_prop</span><span·class="p">:</span><span·class="nf">prop_sort</span><span·class="p"·data-group-id="2 | 185 | ······</span><span·class="nc">ct_prop</span><span·class="p">:</span><span·class="nf">prop_sort</span><span·class="p"·data-group-id="2313783586-11">(</span><span·class="p"·data-group-id="2313783586-11">)</span><span·class="p">,</span><span·class="w"> |
| 186 | ······</span><span·class="n">Config</span><span·class="w"> | 186 | ······</span><span·class="n">Config</span><span·class="w"> |
| 187 | ·····</span><span·class="p"·data-group-id="2 | 187 | ·····</span><span·class="p"·data-group-id="2313783586-10">)</span><span·class="p">.</span></code></pre><p>We·run·it·as·usual,·for·example·with·ct_run·in·the·OS·shell:</p><pre><code·class="text">..../test$·ct_run·-suite·ct_property_test_SUITE |
| 188 | ..... | 188 | ..... |
| 189 | Common·Test:·Running·make·in·test·directories... | 189 | Common·Test:·Running·make·in·test·directories... |
| 190 | TEST·INFO:·1·test(s),·1·case(s)·in·1·suite(s) | 190 | TEST·INFO:·1·test(s),·1·case(s)·in·1·suite(s) |
| 191 | Testing·lib.common_test.ct_property_test_SUITE:·Starting·test,·1·test·cases | 191 | Testing·lib.common_test.ct_property_test_SUITE:·Starting·test,·1·test·cases |
| Offset 217, 21 lines modified | Offset 217, 21 lines modified | ||
| 217 | ....</code></pre><p><a·href=""·id="stateful1"></a></p><h2·id="a-stateful-testing-example"·class="section-heading"> | 217 | ....</code></pre><p><a·href=""·id="stateful1"></a></p><h2·id="a-stateful-testing-example"·class="section-heading"> |
| 218 | ··<a·href="#a-stateful-testing-example"·class="hover-link"> | 218 | ··<a·href="#a-stateful-testing-example"·class="hover-link"> |
| 219 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 219 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 220 | ··</a> | 220 | ··</a> |
| 221 | ··<span·class="text">A·stateful·testing·example</span> | 221 | ··<span·class="text">A·stateful·testing·example</span> |
| 222 | </h2> | 222 | </h2> |
| 223 | <p>Assume·a·test·that·generates·some·parallel·stateful·commands,·and·runs·300 | 223 | <p>Assume·a·test·that·generates·some·parallel·stateful·commands,·and·runs·300 |
| 224 | tests:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">prop_parallel</span><span·class="p"·data-group-id="19 | 224 | tests:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">prop_parallel</span><span·class="p"·data-group-id="1928499846-1">(</span><span·class="n">Config</span><span·class="p"·data-group-id="1928499846-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 225 | ····</span><span·class="nf">numtests</span><span·class="p"·data-group-id="19 | 225 | ····</span><span·class="nf">numtests</span><span·class="p"·data-group-id="1928499846-2">(</span><span·class="mi">300</span><span·class="p">,</span><span·class="w"> |
| 226 | ·············</span><span·class="o">?</span><span·class="n">FORALL</span><span·class="p"·data-group-id="19 | 226 | ·············</span><span·class="o">?</span><span·class="n">FORALL</span><span·class="p"·data-group-id="1928499846-3">(</span><span·class="n">Cmds</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">parallel_commands</span><span·class="p"·data-group-id="1928499846-4">(</span><span·class="o">?</span><span·class="n">MODULE</span><span·class="p[·...·truncated·by·diffoscope;·len:·27,·SHA:·9ec1b806471fda8920ac1d28ff86fab9275e17206def3e44a696004ea8311b8f·...·]-4">)</span><span·class="p">,</span><span·class="w"> |
| 227 | ·····················</span><span·class="k">begin</span><span·class="w"> | 227 | ·····················</span><span·class="k">begin</span><span·class="w"> |
| 228 | ·························</span><span·class="n">RunResult</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">run_parallel_commands</span><span·class="p"·data-group-id="19 | 228 | ·························</span><span·class="n">RunResult</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">run_parallel_commands</span><span·class="p"·data-group-id="1928499846-5">(</span><span·class="o">?</span><span·class="n">MODULE</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cmds</span><span·class="p"·data-group-id="1928499846-5">)</span><span·class="p">,</span><span·class="w"> |
| 229 | ·························</span><span·class="nc">ct_property_test</span><span·class="p">:</span><span·class="nf">present_result</span><span·class="p"·data-group-id="19 | 229 | ·························</span><span·class="nc">ct_property_test</span><span·class="p">:</span><span·class="nf">present_result</span><span·class="p"·data-group-id="1928499846-6">(</span><span·class="o">?</span><span·class="n">MODULE</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cmds</span><span·class="p">,</span><span·class="w">·</span><span·class="n">RunResult</span><span·class="p">,</span><spa[·...·truncated·by·diffoscope;·len:·90,·SHA:·017df8c13bfa5abac775863b9a7df27359c3a44588c6cc834aa3d67d86ee76d6·...·]-6">)</span><span·class="w"> |
| 230 | ·····················</span><span·class="k">end</span><span·class="p"·data-group-id="19 | 230 | ·····················</span><span·class="k">end</span><span·class="p"·data-group-id="1928499846-3">)</span><span·class="p"·data-group-id="1928499846-2">)</span><span·class="p">.</span></code></pre><p>The·<a·href="ct_property_test.html#present_result/4"><code·class="inline">ct_property_test:present_result/4</code></a>·is·a·help·function·for·printing·some |
| 231 | statistics·in·the·CommonTest·log·file.</p><p>Our·example·test·could·for·example·be·a·simple·test·of·an·ftp·server,·where·we | 231 | statistics·in·the·CommonTest·log·file.</p><p>Our·example·test·could·for·example·be·a·simple·test·of·an·ftp·server,·where·we |
| 232 | perform·get,·put·and·delete·requests,·some·of·them·in·parallel.·Per·default,·the | 232 | perform·get,·put·and·delete·requests,·some·of·them·in·parallel.·Per·default,·the |
| 233 | result·has·three·sections:</p><pre><code·class="text">***·User·2019-12-11·13:28:17.504·*** | 233 | result·has·three·sections:</p><pre><code·class="text">***·User·2019-12-11·13:28:17.504·*** |
| 234 | Distribution·sequential/parallel | 234 | Distribution·sequential/parallel |
| 235 | ·57.7%·sequential | 235 | ·57.7%·sequential |
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| 247 | ··[-keep_logs·all·|·NLogs]</code></pre><h2·id="run-common-test-in-interactive-mode"·class="section-heading"> | 247 | ··[-keep_logs·all·|·NLogs]</code></pre><h2·id="run-common-test-in-interactive-mode"·class="section-heading"> |
| 248 | ··<a·href="#run-common-test-in-interactive-mode"·class="hover-link"> | 248 | ··<a·href="#run-common-test-in-interactive-mode"·class="hover-link"> |
| 249 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 249 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 250 | ··</a> | 250 | ··</a> |
| 251 | ··<span·class="text">Run·Common·Test·in·Interactive·Mode</span> | 251 | ··<span·class="text">Run·Common·Test·in·Interactive·Mode</span> |
| 252 | </h2> | 252 | </h2> |
| 253 | <pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="ss">ct_run</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">shell</span><span·class="w"> | 253 | <pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="ss">ct_run</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">shell</span><span·class="w"> |
| 254 | ··</span><span·class="p"·data-group-id=" | 254 | ··</span><span·class="p"·data-group-id="4987426543-1">[</span><span·class="o">-</span><span·class="ss">config</span><span·class="w">·</span><span·class="n">ConfigFile1</span><span·class="w">·</span><span·class="n">ConfigFile2</span><span·class="w">·</span><span·class="p">.</span><span·class="p">[·...·truncated·by·diffoscope;·len:·131,·SHA:·be0b8c7fc2d55be0e2cad64bc848e06e00c7079e6cba3dab3904311a88ef839d·...·]-1">]</span><span·class="w"> |
| 255 | ··</span><span·class="p"·data-group-id=" | 255 | ··</span><span·class="p"·data-group-id="4987426543-2">[</span><span·class="o">-</span><span·class="ss">userconfig</span><span·class="w">·</span><span·class="n">CallbackModule1</span><span·class="w">·</span><span·class="n">ConfigString1</span><span·class="w">·</span><span·class="ow">and</span><span·class="w">·</span><span·class="n">CallbackModule2</span><span·class="w"> |
| 256 | ···</span><span·class="n">ConfigString2</span><span·class="w">·</span><span·class="ow">and</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="ow">and</span><span·class="w">·</span><span·class="n">CallbackModuleN</span><span·class="w">·</span><span·class="n">ConfigStringN</span><span·class="p"·data-group-id=" | 256 | ···</span><span·class="n">ConfigString2</span><span·class="w">·</span><span·class="ow">and</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="ow">and</span><span·class="w">·</span><span·class="n">CallbackModuleN</span><span·class="w">·</span><span·class="n">ConfigStringN</span><span·class="p"·data-group-id="4987426543-2">]</span><span·class="w"> |
| 257 | ··</span><span·class="p"·data-group-id=" | 257 | ··</span><span·class="p"·data-group-id="4987426543-3">[</span><span·class="o">-</span><span·class="ss">decrypt_key</span><span·class="w">·</span><span·class="n">Key</span><span·class="p"·data-group-id="4987426543-3">]</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span>[·...·truncated·by·diffoscope;·len:·208,·SHA:·cde8f04d0314113ee6e7e31fbefd1f23bc1264b73c49b165cc5c40d4c5c65c6f·...·]-4">]</span></code></pre><h2·id="start-a-common-test-master-node"·class="section-heading"> |
| 258 | ··<a·href="#start-a-common-test-master-node"·class="hover-link"> | 258 | ··<a·href="#start-a-common-test-master-node"·class="hover-link"> |
| 259 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 259 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 260 | ··</a> | 260 | ··</a> |
| 261 | ··<span·class="text">Start·a·Common·Test·Master·Node</span> | 261 | ··<span·class="text">Start·a·Common·Test·Master·Node</span> |
| 262 | </h2> | 262 | </h2> |
| 263 | <pre><code·class="text">·ct_run·-ctmaster</code></pre><h2·id="see-also"·class="section-heading"> | 263 | <pre><code·class="text">·ct_run·-ctmaster</code></pre><h2·id="see-also"·class="section-heading"> |
| 264 | ··<a·href="#see-also"·class="hover-link"> | 264 | ··<a·href="#see-also"·class="hover-link"> |
| Offset 146, 23 lines modified | Offset 146, 23 lines modified | ||
| 146 | configuration·files·have·default·values·set·by·the·<code·class="inline">SNMP</code>·application.·These | 146 | configuration·files·have·default·values·set·by·the·<code·class="inline">SNMP</code>·application.·These |
| 147 | values·can·be·overridden·by·suppling·a·list·of·valid·configuration·values·or·a | 147 | values·can·be·overridden·by·suppling·a·list·of·valid·configuration·values·or·a |
| 148 | file·located·in·the·test·suites·data·directory,·which·can·produce·a·list·of | 148 | file·located·in·the·test·suites·data·directory,·which·can·produce·a·list·of |
| 149 | valid·configuration·values·if·you·apply·function·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#consult/1"><code·class="inline">file:consult/1</code></a>·to·the·file.</p><ul><li><p><strong><code·class="inline">{agent_contexts,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·-·Optional.</p></li><li><p><strong><code·class="inline">{agent_community,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·-·Optional.</p></li><li><p><strong><code·class="inline">{agent_sysinfo,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·-·Optional.</p></li><li><p><strong><code·class="inline">{agent_vacm,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·-·Optional.</p></li><li><p><strong><code·class="inline">{agent_usm,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·-·Optional.</p></li><li><p><strong><code·class="inline">{agent_notify_def,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·-·Optional.</p></li><li><p><strong><code·class="inline">{agent_target_address_def,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·- | 149 | valid·configuration·values·if·you·apply·function·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#consult/1"><code·class="inline">file:consult/1</code></a>·to·the·file.</p><ul><li><p><strong><code·class="inline">{agent_contexts,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·-·Optional.</p></li><li><p><strong><code·class="inline">{agent_community,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·-·Optional.</p></li><li><p><strong><code·class="inline">{agent_sysinfo,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·-·Optional.</p></li><li><p><strong><code·class="inline">{agent_vacm,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·-·Optional.</p></li><li><p><strong><code·class="inline">{agent_usm,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·-·Optional.</p></li><li><p><strong><code·class="inline">{agent_notify_def,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·-·Optional.</p></li><li><p><strong><code·class="inline">{agent_target_address_def,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·- |
| 150 | Optional.</p></li><li><p><strong><code·class="inline">{agent_target_param_def,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·- | 150 | Optional.</p></li><li><p><strong><code·class="inline">{agent_target_param_def,·[term()]·|·{data_dir_file,·rel_path()}}</code></strong>·- |
| 151 | Optional.</p></li></ul><p>Parameter·<code·class="inline">MgrAgentConfName</code>·in·the·functions·is·to·be·a·name·you·allocate·in | 151 | Optional.</p></li></ul><p>Parameter·<code·class="inline">MgrAgentConfName</code>·in·the·functions·is·to·be·a·name·you·allocate·in |
| 152 | your·test·suite·using·a·<code·class="inline">require</code>·statement.·Example·(where | 152 | your·test·suite·using·a·<code·class="inline">require</code>·statement.·Example·(where |
| 153 | <code·class="inline">MgrAgentConfName·=·snmp_mgr_agent</code>):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">suite</span><span·class="p"·data-group-id=" | 153 | <code·class="inline">MgrAgentConfName·=·snmp_mgr_agent</code>):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">suite</span><span·class="p"·data-group-id="7032139916-1">(</span><span·class="p"·data-group-id="7032139916-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="7032139916-2">[</span><span·class="p"·data-group-id="7032139916-3">{</span[·...·truncated·by·diffoscope;·len:·683,·SHA:·f43dfe904c12b6481f652de98f2f4d1f69a1c154d933bed0d8324300160d5927·...·]-1">)</span><span·class="p">.</span></code></pre><p>Notice·that·USM·users·are·needed·for·SNMPv3·configuration·and·are·not·to·be |
| 154 | confused·with·users.</p><p>SNMP·traps,·inform,·and·report·messages·are·handled·by·the·user·callback·module. | 154 | confused·with·users.</p><p>SNMP·traps,·inform,·and·report·messages·are·handled·by·the·user·callback·module. |
| 155 | For·details,·see·the·<a·href="../../../../lib/snmp-5.18.1/doc/html/index.html"><code·class="inline">SNMP</code></a>·application.</p><p>It·is·recommended·to·use·the·<code·class="inline">.hrl</code>·files·created·by·the·Erlang/OTP·MIB·compiler | 155 | For·details,·see·the·<a·href="../../../../lib/snmp-5.18.1/doc/html/index.html"><code·class="inline">SNMP</code></a>·application.</p><p>It·is·recommended·to·use·the·<code·class="inline">.hrl</code>·files·created·by·the·Erlang/OTP·MIB·compiler |
| 156 | to·define·the·Object·Identifiers·(OIDs).·For·example,·to·get·the·Erlang·node | 156 | to·define·the·Object·Identifiers·(OIDs).·For·example,·to·get·the·Erlang·node |
| 157 | name·from·<code·class="inline">erlNodeTable</code>·in·the·OTP-MIB:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Oid</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">?</span><span·class="ss">erlNodeEntry</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="p"·data-group-id=" | 157 | name·from·<code·class="inline">erlNodeTable</code>·in·the·OTP-MIB:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Oid</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">?</span><span·class="ss">erlNodeEntry</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="p"·data-group-id="3255690454-1">[</span><span·class="o">?</span><span·class="ss">erlNodeName</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="3255690454-1">]</span></code></pre><p>Furthermore,·values·can·be·set·for·<code·class="inline">SNMP</code>·application·configuration·parameters, |
| 158 | <code·class="inline">config</code>,·<code·class="inline">server</code>,·<code·class="inline">net_if</code>,·and·so·on·(for·a·list·of·valid·parameters·and | 158 | <code·class="inline">config</code>,·<code·class="inline">server</code>,·<code·class="inline">net_if</code>,·and·so·on·(for·a·list·of·valid·parameters·and |
| 159 | types,·see·the·<a·href="../../../../lib/snmp-5.18.1/doc/html/index.html"><code·class="inline">User's·Guide·for·the·SNMP·application</code></a>). | 159 | types,·see·the·<a·href="../../../../lib/snmp-5.18.1/doc/html/index.html"><code·class="inline">User's·Guide·for·the·SNMP·application</code></a>). |
| 160 | This·is·done·by·defining·a·configuration·data·variable·on·the·following·form:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="6065892262-1">{</span><span·class="ss">snmp_app</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6065892262-2">[</span><span·class="p"·data-group-id="6065892262-3">{</span><span·class="ss">manager</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6065892262-4">[</span><span·class="nf">snmp_app_manager_params</span><span·class="p"·data-group-id="6065892262-5">(</span><span·class="p"·data-group-id="6065892262-5">)</span><span·class="p"·data-group-id="6065892262-4">]</span><span·class="p"·data-group-id="6065892262-3">}</span><span·class="p">,</span><span·class="w"> | ||
| 161 | 160 | This·is·done·by·defining·a·configuration·data·variable·on·the·following·form:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="2891280652-1">{</span><span·class="ss">snmp_app</span><span·class="p">,</span><span·class="w">·<[·...·truncated·by·diffoscope;·len:·543,·SHA:·2fc4e610e25c209f519f930ad58a431926ae990eed7e6bc8a2fcac382ab09c18·...·] | |
| 161 | ············</span><span·class="p"·data-group-id="2891280652-6">{</span><span·class="ss">agent</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2891280652-7">[</span><span·class="nf">snmp_app_agent_params</span><span·class="p"·data-group-id="2891280652-8">(</span><span·class="p"·data-group-id="2891280652-8">)</span><span·class="p"·data-group-id="2891280652-7">]</span><span·class="p"·data-group-id="2891280652-6">}</span><span·class="p"·data-group-id="2891280652-2">]</span><span·class="p"·data-group-id="2891280652-1">}</span><span·class="p">.</span></code></pre><p>A·name·for·the·data·must·be·allocated·in·the·suite·using·<code·class="inline">require</code>·(see·the | ||
| 162 | example·above).·Pass·this·name·as·argument·<code·class="inline">SnmpAppConfName</code>·to | 162 | example·above).·Pass·this·name·as·argument·<code·class="inline">SnmpAppConfName</code>·to |
| 163 | <a·href="#start/3"><code·class="inline">ct_snmp:start/3</code></a>.·<code·class="inline">ct_snmp</code>·specifies·default·values·for·some | 163 | <a·href="#start/3"><code·class="inline">ct_snmp:start/3</code></a>.·<code·class="inline">ct_snmp</code>·specifies·default·values·for·some |
| 164 | <code·class="inline">SNMP</code>·application·configuration·parameters·(such·as·<code·class="inline">{verbosity,trace}</code>·for | 164 | <code·class="inline">SNMP</code>·application·configuration·parameters·(such·as·<code·class="inline">{verbosity,trace}</code>·for |
| 165 | parameter·<code·class="inline">config</code>).·This·set·of·defaults·is·merged·with·the·parameters | 165 | parameter·<code·class="inline">config</code>).·This·set·of·defaults·is·merged·with·the·parameters |
| 166 | specified·by·the·user.·The·user·values·override·<code·class="inline">ct_snmp</code>·defaults.</p> | 166 | specified·by·the·user.·The·user·values·override·<code·class="inline">ct_snmp</code>·defaults.</p> |
| 167 | ····</section> | 167 | ····</section> |
| Offset 129, 22 lines modified | Offset 129, 22 lines modified | ||
| 129 | ····<section·id="moduledoc"> | 129 | ····<section·id="moduledoc"> |
| 130 | <p>SSH/SFTP·client·module.</p><p>This·module·uses·application·<code·class="inline">SSH</code>,·which·provides·detailed·information·about, | 130 | <p>SSH/SFTP·client·module.</p><p>This·module·uses·application·<code·class="inline">SSH</code>,·which·provides·detailed·information·about, |
| 131 | for·example,·functions,·types,·and·options.</p><p>Argument·<code·class="inline">Server</code>·in·the·SFTP·functions·is·only·to·be·used·for·SFTP·sessions | 131 | for·example,·functions,·types,·and·options.</p><p>Argument·<code·class="inline">Server</code>·in·the·SFTP·functions·is·only·to·be·used·for·SFTP·sessions |
| 132 | that·have·been·started·on·existing·SSH·connections·(that·is,·when·the·original | 132 | that·have·been·started·on·existing·SSH·connections·(that·is,·when·the·original |
| 133 | connection·type·is·<code·class="inline">ssh</code>).·Whenever·the·connection·type·is·<code·class="inline">sftp</code>,·use·the·SSH | 133 | connection·type·is·<code·class="inline">ssh</code>).·Whenever·the·connection·type·is·<code·class="inline">sftp</code>,·use·the·SSH |
| 134 | connection·reference·only.</p><p>The·following·options·are·valid·for·specifying·an·SSH/SFTP·connection·(that·is, | 134 | connection·reference·only.</p><p>The·following·options·are·valid·for·specifying·an·SSH/SFTP·connection·(that·is, |
| 135 | can·be·used·as·configuration·elements):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="0 | 135 | can·be·used·as·configuration·elements):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="0858158121-1">[</span><span·class="p"·data-group-id="0858158121-2">{</span><span·class="n">ConnType</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Addr</span><span·class="p"·data-group-id="0858158121-2">}</span><span·class="p">,</span><span·class="w"> |
| 136 | ·</span><span·class="p"·data-group-id="0 | 136 | ·</span><span·class="p"·data-group-id="0858158121-3">{</span><span·class="ss">port</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Port</span><span·class="p"·data-group-id="0858158121-3">}</span><span·class="p">,</span><span·class="w"> |
| 137 | ·</span><span·class="p"·data-group-id="0 | 137 | ·</span><span·class="p"·data-group-id="0858158121-4">{</span><span·class="ss">user</span><span·class="p">,</span><span·class="w">·</span><span·class="n">UserName</span><span·class="p"·data-group-id="0858158121-4">}</span><span·class="w"> |
| 138 | ·</span><span·class="p"·data-group-id="0 | 138 | ·</span><span·class="p"·data-group-id="0858158121-5">{</span><span·class="ss">password</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pwd</span><span·class="p"·data-group-id="0858158121-5">}</span><span·class="w"> |
| 139 | ·</span><span·class="p"·data-group-id="0 | 139 | ·</span><span·class="p"·data-group-id="0858158121-6">{</span><span·class="ss">user_dir</span><span·class="p">,</span><span·class="w">·</span><span·class="n">String</span><span·class="p"·data-group-id="0858158121-6">}</span><span·class="w"> |
| 140 | ·</span><span·class="p"·data-group-id="0 | 140 | ·</span><span·class="p"·data-group-id="0858158121-7">{</span><span·class="ss">public_key_alg</span><span·class="p">,</span><span·class="w">·</span><span·class="n">PubKeyAlg</span><span·class="p"·data-group-id="0858158121-7">}</span><span·class="w"> |
| 141 | ·</span><span·class="p"·data-group-id="0 | 141 | ·</span><span·class="p"·data-group-id="0858158121-8">{</span><span·class="ss">connect_timeout</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Timeout</span><span·class="p"·data-group-id="0858158121-8">}</span><span·class="w"> |
| 142 | ·</span><span·class="p"·data-group-id="0 | 142 | ·</span><span·class="p"·data-group-id="0858158121-9">{</span><span·class="ss">key_cb</span><span·class="p">,</span><span·class="w">·</span><span·class="n">KeyCallbackMod</span><span·class="p"·data-group-id="0858158121-9">}</span><span·class="p"·data-group-id="0858158121-1">]</span></code></pre><p><code·class="inline">ConnType·=·ssh·|·sftp</code>.</p><p>For·other·types,·see·<a·href="../../../../lib/ssh-5.2.8/doc/html/ssh.html"><code·class="inline">ssh</code></a>.</p><p>All·time-out·parameters·in·<code·class="inline">ct_ssh</code>·functions·are·values·in·milliseconds.</p> |
| 143 | ····</section> | 143 | ····</section> |
| 144 | </div> | 144 | </div> |
| 145 | ··<section·id="summary"·class="details-list"> | 145 | ··<section·id="summary"·class="details-list"> |
| 146 | ····<h1·class="section-heading"> | 146 | ····<h1·class="section-heading"> |
| 147 | ······<a·class="hover-link"·href="#summary"> | 147 | ······<a·class="hover-link"·href="#summary"> |
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| 132 | matching·on·the·result.·For·information·about·how·to·use·<code·class="inline">ct_telnet</code>·and | 132 | matching·on·the·result.·For·information·about·how·to·use·<code·class="inline">ct_telnet</code>·and |
| 133 | configure·connections,·specifically·for·UNIX·hosts,·see·the·<a·href="unix_telnet.html"><code·class="inline">unix_telnet</code></a> | 133 | configure·connections,·specifically·for·UNIX·hosts,·see·the·<a·href="unix_telnet.html"><code·class="inline">unix_telnet</code></a> |
| 134 | manual·page.</p><p>Default·values·defined·in·<code·class="inline">ct_telnet</code>:</p><p><a·href=""·id="Default_values"></a></p><ul><li>Connection·timeout·(time·to·wait·for·connection)·=·10·seconds</li><li>Command·timeout·(time·to·wait·for·a·command·to·return)·=·10·seconds</li><li>Max·number·of·reconnection·attempts·=·3</li><li>Reconnection·interval·(time·to·wait·in·between·reconnection·attempts)·=·5 | 134 | manual·page.</p><p>Default·values·defined·in·<code·class="inline">ct_telnet</code>:</p><p><a·href=""·id="Default_values"></a></p><ul><li>Connection·timeout·(time·to·wait·for·connection)·=·10·seconds</li><li>Command·timeout·(time·to·wait·for·a·command·to·return)·=·10·seconds</li><li>Max·number·of·reconnection·attempts·=·3</li><li>Reconnection·interval·(time·to·wait·in·between·reconnection·attempts)·=·5 |
| 135 | seconds</li><li>Keep·alive·(sends·NOP·to·the·server·every·8·sec·if·connection·is·idle)·= | 135 | seconds</li><li>Keep·alive·(sends·NOP·to·the·server·every·8·sec·if·connection·is·idle)·= |
| 136 | <code·class="inline">true</code></li><li>Polling·limit·(max·number·of·times·to·poll·to·get·a·remaining·string | 136 | <code·class="inline">true</code></li><li>Polling·limit·(max·number·of·times·to·poll·to·get·a·remaining·string |
| 137 | terminated)·=·0</li><li>Polling·interval·(sleep·time·between·polls)·=·1·second</li><li>The·TCP_NODELAY·option·for·the·telnet·socket·is·disabled·(set·to·<code·class="inline">false</code>)·per | 137 | terminated)·=·0</li><li>Polling·interval·(sleep·time·between·polls)·=·1·second</li><li>The·TCP_NODELAY·option·for·the·telnet·socket·is·disabled·(set·to·<code·class="inline">false</code>)·per |
| 138 | default</li></ul><p>These·parameters·can·be·modified·by·the·user·with·the·following·configuration | 138 | default</li></ul><p>These·parameters·can·be·modified·by·the·user·with·the·following·configuration |
| 139 | term:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 139 | term:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="6054753312-1">{</span><span·class="ss">telnet_settings</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6054753312-2">[</span><span·class="p"·data-group-id="6054753312-3">{</span><span·class="ss">connect_timeout</span><s[·...·truncated·by·diffoscope;·len:·94,·SHA:·28e5a580a0e2523aa4fd4f60e1180033fc14bb3c44e41df32cd31747e73b747c·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 140 | ···················</span><span·class="p"·data-group-id=" | 140 | ···················</span><span·class="p"·data-group-id="6054753312-4">{</span><span·class="ss">command_timeout</span><span·class="p">,</span><span·class="n">Millisec</span><span·class="p"·data-group-id="6054753312-4">}</span><span·class="p">,</span><span·class="w"> |
| 141 | ···················</span><span·class="p"·data-group-id=" | 141 | ···················</span><span·class="p"·data-group-id="6054753312-5">{</span><span·class="ss">reconnection_attempts</span><span·class="p">,</span><span·class="n">N</span><span·class="p"·data-group-id="6054753312-5">}</span><span·class="p">,</span><span·class="w"> |
| 142 | ···················</span><span·class="p"·data-group-id=" | 142 | ···················</span><span·class="p"·data-group-id="6054753312-6">{</span><span·class="ss">reconnection_interval</span><span·class="p">,</span><span·class="n">Millisec</span><span·class="p"·data-group-id="6054753312-6">}</span><span·class="p">,</span><span·class="w"> |
| 143 | ···················</span><span·class="p"·data-group-id=" | 143 | ···················</span><span·class="p"·data-group-id="6054753312-7">{</span><span·class="ss">keep_alive</span><span·class="p">,</span><span·class="n">Bool</span><span·class="p"·data-group-id="6054753312-7">}</span><span·class="p">,</span><span·class="w"> |
| 144 | ···················</span><span·class="p"·data-group-id=" | 144 | ···················</span><span·class="p"·data-group-id="6054753312-8">{</span><span·class="ss">poll_limit</span><span·class="p">,</span><span·class="n">N</span><span·class="p"·data-group-id="6054753312-8">}</span><span·class="p">,</span><span·class="w"> |
| 145 | ···················</span><span·class="p"·data-group-id=" | 145 | ···················</span><span·class="p"·data-group-id="6054753312-9">{</span><span·class="ss">poll_interval</span><span·class="p">,</span><span·class="n">Millisec</span><span·class="p"·data-group-id="6054753312-9">}</span><span·class="p">,</span><span·class="w"> |
| 146 | ···················</span><span·class="p"·data-group-id=" | 146 | ···················</span><span·class="p"·data-group-id="6054753312-10">{</span><span·class="ss">tcp_nodelay</span><span·class="p">,</span><span·class="n">Bool</span><span·class="p"·data-group-id="6054753312-10">}</span><span·class="p"·data-group-id="6054753312-2">]</span><span·class="p"·data-group-id="605475331[·...·truncated·by·diffoscope;·len:·1,·SHA:·d4735e3a265e16eee03f59718b9b5d03019c07d8b6c51f90da3a666eec13ab35·...·]-1">}</span><span·class="p">.</span></code></pre><p><code·class="inline">Millisec·=·integer(),·N·=·integer()</code></p><p>Enter·the·<code·class="inline">telnet_settings</code>·term·in·a·configuration·file·included·in·the·test |
| 147 | and·<code·class="inline">ct_telnet</code>·retrieves·the·information·automatically.</p><p><code·class="inline">keep_alive</code>·can·be·specified·per·connection,·if·necessary.·For·details,·see | 147 | and·<code·class="inline">ct_telnet</code>·retrieves·the·information·automatically.</p><p><code·class="inline">keep_alive</code>·can·be·specified·per·connection,·if·necessary.·For·details,·see |
| 148 | <a·href="unix_telnet.html"><code·class="inline">unix_telnet</code></a>.</p><h2·id="module-logging"·class="section-heading"> | 148 | <a·href="unix_telnet.html"><code·class="inline">unix_telnet</code></a>.</p><h2·id="module-logging"·class="section-heading"> |
| 149 | ··<a·href="#module-logging"·class="hover-link"> | 149 | ··<a·href="#module-logging"·class="hover-link"> |
| 150 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 150 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 151 | ··</a> | 151 | ··</a> |
| 152 | ··<span·class="text">Logging</span> | 152 | ··<span·class="text">Logging</span> |
| 153 | </h2> | 153 | </h2> |
| 154 | <p><a·href=""·id="Logging"></a></p><p>The·default·logging·behavior·of·<code·class="inline">ct_telnet</code>·is·to·print·information·about | 154 | <p><a·href=""·id="Logging"></a></p><p>The·default·logging·behavior·of·<code·class="inline">ct_telnet</code>·is·to·print·information·about |
| 155 | performed·operations,·commands,·and·their·corresponding·results·to·the·test·case | 155 | performed·operations,·commands,·and·their·corresponding·results·to·the·test·case |
| 156 | HTML·log.·The·following·is·not·printed·to·the·HTML·log:·text·strings·sent·from | 156 | HTML·log.·The·following·is·not·printed·to·the·HTML·log:·text·strings·sent·from |
| 157 | the·Telnet·server·that·are·not·explicitly·received·by·a·<code·class="inline">ct_telnet</code>·function, | 157 | the·Telnet·server·that·are·not·explicitly·received·by·a·<code·class="inline">ct_telnet</code>·function, |
| 158 | such·as·<a·href="#expect/3"><code·class="inline">expect/3</code></a>.·However,·<code·class="inline">ct_telnet</code>·can·be·configured·to·use | 158 | such·as·<a·href="#expect/3"><code·class="inline">expect/3</code></a>.·However,·<code·class="inline">ct_telnet</code>·can·be·configured·to·use |
| 159 | a·special·purpose·event·handler,·implemented·in·<code·class="inline">ct_conn_log_h</code>,·for·logging | 159 | a·special·purpose·event·handler,·implemented·in·<code·class="inline">ct_conn_log_h</code>,·for·logging |
| 160 | <em>all</em>·Telnet·traffic.·To·use·this·handler,·install·a·<code·class="inline">Common·Test</code>·hook·named | 160 | <em>all</em>·Telnet·traffic.·To·use·this·handler,·install·a·<code·class="inline">Common·Test</code>·hook·named |
| 161 | <code·class="inline">cth_conn_log</code>.·Example·(using·the·test·suite·information·function):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">suite</span><span·class="p"·data-group-id=" | 161 | <code·class="inline">cth_conn_log</code>.·Example·(using·the·test·suite·information·function):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">suite</span><span·class="p"·data-group-id="8006599192-1">(</span><span·class="p"·data-group-id="8006599192-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 162 | ····</span><span·class="p"·data-group-id=" | 162 | ····</span><span·class="p"·data-group-id="8006599192-2">[</span><span·class="p"·data-group-id="8006599192-3">{</span><span·class="ss">ct_hooks</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8006599192-4">[</span><span·class="p"·data-group-id="8006599192-5">{</[·...·truncated·by·diffoscope;·len:·805,·SHA:·f57c70fd5a7b4ef9bd5e8554cfddbb1e894be8806e9ac78cd2e6fde7f3c75733·...·]-2">]</span><span·class="p">.</span></code></pre><p><code·class="inline">conn_mod()</code>·is·the·name·of·the·<code·class="inline">Common·Test</code>·module·implementing·the·connection |
| 163 | protocol,·that·is,·<code·class="inline">ct_telnet</code>.</p><p>The·<code·class="inline">cth_conn_log</code>·hook·performs·unformatted·logging·of·Telnet·data·to·a | 163 | protocol,·that·is,·<code·class="inline">ct_telnet</code>.</p><p>The·<code·class="inline">cth_conn_log</code>·hook·performs·unformatted·logging·of·Telnet·data·to·a |
| 164 | separate·text·file.·All·Telnet·communication·is·captured·and·printed,·including | 164 | separate·text·file.·All·Telnet·communication·is·captured·and·printed,·including |
| 165 | any·data·sent·from·the·server.·The·link·to·this·text·file·is·located·at·the·top | 165 | any·data·sent·from·the·server.·The·link·to·this·text·file·is·located·at·the·top |
| 166 | of·the·test·case·HTML·log.</p><p>By·default,·data·for·all·Telnet·connections·is·logged·in·one·common·file·(named | 166 | of·the·test·case·HTML·log.</p><p>By·default,·data·for·all·Telnet·connections·is·logged·in·one·common·file·(named |
| 167 | <code·class="inline">default</code>),·which·can·get·messy,·for·example,·if·multiple·Telnet·sessions·are | 167 | <code·class="inline">default</code>),·which·can·get·messy,·for·example,·if·multiple·Telnet·sessions·are |
| 168 | running·in·parallel.·Therefore·a·separate·log·file·can·be·created·for·each | 168 | running·in·parallel.·Therefore·a·separate·log·file·can·be·created·for·each |
| 169 | connection.·To·configure·this,·use·hook·option·<code·class="inline">hosts</code>·and·list·the·names·of·the | 169 | connection.·To·configure·this,·use·hook·option·<code·class="inline">hosts</code>·and·list·the·names·of·the |
| Offset 172, 23 lines modified | Offset 172, 23 lines modified | ||
| 172 | default·value·of·this·option·is·<code·class="inline">raw</code>,·which·results·in·the·behavior·described | 172 | default·value·of·this·option·is·<code·class="inline">raw</code>,·which·results·in·the·behavior·described |
| 173 | above.·If·the·value·is·set·to·<code·class="inline">html</code>,·all·Telnet·communication·is·printed·to·the | 173 | above.·If·the·value·is·set·to·<code·class="inline">html</code>,·all·Telnet·communication·is·printed·to·the |
| 174 | test·case·HTML·log·instead.</p><p>For·raw·logs,·<code·class="inline">prefix</code>·option·can·be·used·for·adjusting·prefix·data | 174 | test·case·HTML·log·instead.</p><p>For·raw·logs,·<code·class="inline">prefix</code>·option·can·be·used·for·adjusting·prefix·data |
| 175 | added·to·connection·log.·The·default·value·of·this·option·is | 175 | added·to·connection·log.·The·default·value·of·this·option·is |
| 176 | <code·class="inline">disabled</code>,·which·results·with·no·prefix·data.·If·the·value·is·set·to | 176 | <code·class="inline">disabled</code>,·which·results·with·no·prefix·data.·If·the·value·is·set·to |
| 177 | <code·class="inline">full</code>·prefix·contains·timestamp·and·additonal·information.·If·the | 177 | <code·class="inline">full</code>·prefix·contains·timestamp·and·additonal·information.·If·the |
| 178 | value·is·set·to·<code·class="inline">short</code>·prefix·includes·only·human·readable·timestamp.</p><p>All·<code·class="inline">cth_conn_log</code>·hook·options·described·can·also·be·specified·in·a | 178 | value·is·set·to·<code·class="inline">short</code>·prefix·includes·only·human·readable·timestamp.</p><p>All·<code·class="inline">cth_conn_log</code>·hook·options·described·can·also·be·specified·in·a |
| 179 | configuration·file·with·configuration·variable·<code·class="inline">ct_conn_log</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="5642750802-1">{</span><span·class="ss">ct_conn_log</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5642750802-2">[</span><span·class="p"·data-group-id="5642750802-3">{</span><span·class="ss">ct_telnet</span><span·class="p">,</span><span·class="p"·data-group-id="5642750802-4">[</span><span·class="p"·data-group-id="5642750802-5">{</span><span·class="ss">log_type</span><span·class="p">,</span><span·class="ss">raw</span><span·class="p"·data-group-id="5642750802-5">}</span><span·class="p">,</span><span·class="w"> | ||
| 180 | 179 | configuration·file·with·configuration·variable·<code·class="inline">ct_conn_log</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8914909898-1">{</span><span·class="ss">ct_conn_log</span><span[·...·truncated·by·diffoscope;·len:·488,·SHA:·1e0315d42942750c2ff829cc6c146de4601ce1df9867b12734c65804c23535d4·...·] | |
| 180 | ···························</span><span·class="p"·data-group-id="8914909898-6">{</span><span·class="ss">hosts</span><span·class="p">,</span><span·class="p"·data-group-id="8914909898-7">[</span><span·class="nf">key_or_name</span><span·class="p"·data-group-id="8914909898-8">(</span><span·class="p"·data-group-id="8914909898-8">)</span><span·class="p"·data-group-id="8914909898-7">]</span><span·class="p"·data-group-id="8914909898-6">}</span><span·class="p"·data-group-id="8914909898-4">]</span><span·class="p"·data-group-id="8914909898-3">}</span><span·class="p"·data-group-id="8914909898-2">]</span><span·class="p"·data-group-id="8914909898-1">}</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Hook·options·specified·in·a·configuration·file·overwrite·any·hard-coded·hook | ||
| 181 | options·in·the·test·suite.</p></section><p><a·href=""·id="Logging_example"></a></p><p><em>Logging·Example:</em></p><p>The·following·<code·class="inline">ct_hooks</code>·statement·causes·printing·of·Telnet·traffic·to·separate | 181 | options·in·the·test·suite.</p></section><p><a·href=""·id="Logging_example"></a></p><p><em>Logging·Example:</em></p><p>The·following·<code·class="inline">ct_hooks</code>·statement·causes·printing·of·Telnet·traffic·to·separate |
| 182 | logs·for·the·connections·<code·class="inline">server1</code>·and·<code·class="inline">server2</code>.·Traffic·for·any·other | 182 | logs·for·the·connections·<code·class="inline">server1</code>·and·<code·class="inline">server2</code>.·Traffic·for·any·other |
| 183 | connections·is·logged·in·the·default·Telnet·log.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">suite</span><span·class="p"·data-group-id=" | 183 | connections·is·logged·in·the·default·Telnet·log.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">suite</span><span·class="p"·data-group-id="0147766833-1">(</span><span·class="p"·data-group-id="0147766833-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 184 | ····</span><span·class="p"·data-group-id=" | 184 | ····</span><span·class="p"·data-group-id="0147766833-2">[</span><span·class="p"·data-group-id="0147766833-3">{</span><span·class="ss">ct_hooks</span><span·class="p">,</span><span·class="w"> |
| 185 | ······</span><span·class="p"·data-group-id="2370976069-4">[</span><span·class="p"·data-group-id="2370976069-5">{</span><span·class="ss">cth_conn_log</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2370976069-6">[</span><span·class="p"·data-group-id="2370976069-7">{</span><span·class="ss">ct_telnet</span><span·class="p">,</span><span·class="p"·data-group-id="2370976069-8">[</span><span·class="p"·data-group-id="2370976069-9">{</span><span·class="ss">hosts</span><span·class="p">,</span><span·class="p"·data-group-id="2370976069-10">[</span><span·class="ss">server1</span><span·class="p">,</span><span·class="ss">server2</span><span·class="p"·data-group-id="2370976069-10">]</span><span·class="p"·data-group-id="2370976069-9">}</span><span·class="p"·data-group-id="2370976069-8">]</span><span·class="p"·data-group-id="2370976069-7">}</span><span·class="p"·data-group-id="2370976069-6">]</span><span·class="p"·data-group-id="2370976069-5">}</span><span·class="p"·data-group-id="2370976069-4">]</span><span·class="p"·data-group-id="2370976069-3">}</span><span·class="p"·data-group-id="2370976069-2">]</span><span·class="p">.</span></code></pre><p>As·previously·explained,·this·specification·can·also·be·provided·by·an·entry | ||
| 186 | like·the·following·in·a·configuration·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="3564007894-1">{</span><span·class="ss">ct_conn_log</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3564007894-2">[</span><span·class="p"·data-group-id="3564007894-3">{</span><span·class="ss">ct_telnet</span><span·class="p">,</span><span·class="p"·data-group-id="3564007894-4">[</span><span·class="p"·data-group-id="3564007894-5">{</span><span·class="ss">hosts</span><span·class="p">,</span><span·class="p"·data-group-id="3564007894-6">[</span><span·class="ss">server1</span><span·class="p">,</span><span·class="ss">server2</span><span·class="p"·data-group-id="3564007894-6">]</span><span·class="p"·data-group-id="3564007894-5">}</span><span·class="p"·data-group-id="3564007894-4">]</span><span·class="p"·data-group-id="3564007894-3">}</span><span·class="p"·data-group-id="3564007894-2">]</span><span·class="p"·data-group-id="3564007894-1">}</span><span·class="p">.</span></code></pre><p>In·this·case·the·<code·class="inline">ct_hooks</code>·statement·in·the·test·suite·can·look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">suite</span><span·class="p"·data-group-id="3060381783-1">(</span><span·class="p"·data-group-id="3060381783-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | ||
| 187 | ····</span><span·class="p"·data-group-id=" | 185 | ······</span><span·class="p"·data-group-id="0147766833-4">[</span><span·class="p"·data-group-id="0147766833-5">{</span><span·class="ss">cth_conn_log</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0147766833-6">[</span><spa[·...·truncated·by·diffoscope;·len:·999,·SHA:·998574010f89a3c3e55439b9bd9f1d50b944b2e42227f225854b722fa53cbad9·...·] |
| 186 | like·the·following·in·a·configuration·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="2690011391-1">{</span><span·class="ss">ct_conn_log</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2690011391-2">[</span><span·class="p"·data-group-id="2690011391-3">{</span><span·class="ss">ct_telnet</span><span·class="p">,</span><span·class="p"·data-group-id="2690011391-4">[</span><span·class="p"·data-group-id="2690011391-5">{</span><span·class="ss">hosts</span><span·class="p">,</span><span·class="p"·data-group-id="2690011391-6">[</span><span·class="ss">server1</span><span·class="p">,</span><span·class="ss">server2</span><span·class="p"·data-group-id="2690011391-6">]</span><span·class="p"·data-group-id="2690011391-5">}</span><span·class="p"·data-group-id="2690011391-4">]</span><span·class="p"·data-group-id="2690011391-3">}</span><span·class="p"·data-group-id="2690011391-2">]</span><span·class="p"·data-group-id="2690011391-1">}</span><span·class="p">.</span></code></pre><p>In·this·case·the·<code·class="inline">ct_hooks</code>·statement·in·the·test·suite·can·look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">suite</span><span·class="p"·data-group-id="6415057100-1">(</span><span·class="p"·data-group-id="6415057100-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | ||
| 187 | ····</span><span·class="p"·data-group-id="6415057100-2">[</span><span·class="p"·data-group-id="6415057100-3">{</span><span·class="ss">ct_hooks</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6415057100-4">[</span><span·class="p"·data-group-id="6415057100-5">{</span><span·class="ss">cth_conn_log</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6415057100-6">[</span><span·class="p"·data-group-id="6415057100-6">]</span><span·class="p"·data-group-id="6415057100-5">}</span><span·class="p"·data-group-id="6415057100-4">]</span><span·class="p"·data-group-id="6415057100-3">}</span><span·class="p"·data-group-id="6415057100-2">]</span><span·class="p">.</span></code></pre><h2·id="module-see-also"·class="section-heading"> | ||
| 188 | ··<a·href="#module-see-also"·class="hover-link"> | 188 | ··<a·href="#module-see-also"·class="hover-link"> |
| 189 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 189 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 190 | ··</a> | 190 | ··</a> |
| 191 | ··<span·class="text">See·Also</span> | 191 | ··<span·class="text">See·Also</span> |
| 192 | </h2> | 192 | </h2> |
| 193 | <p><a·href="unix_telnet.html"><code·class="inline">unix_telnet</code></a></p> | 193 | <p><a·href="unix_telnet.html"><code·class="inline">unix_telnet</code></a></p> |
| 194 | ····</section> | 194 | ····</section> |
| Offset 865, 17 lines modified | Offset 865, 17 lines modified | ||
| 865 | of·waiting·for·prompt.</p></li><li><p><strong><code·class="inline">repeat·|·repeat,·N</code></strong>·-·The·pattern(s)·must·be·matched·multiple·times.·If | 865 | of·waiting·for·prompt.</p></li><li><p><strong><code·class="inline">repeat·|·repeat,·N</code></strong>·-·The·pattern(s)·must·be·matched·multiple·times.·If |
| 866 | <code·class="inline">N</code>·is·specified,·the·pattern(s)·are·matched·<code·class="inline">N</code>·times,·and·the·function | 866 | <code·class="inline">N</code>·is·specified,·the·pattern(s)·are·matched·<code·class="inline">N</code>·times,·and·the·function |
| 867 | returns·<code·class="inline">HaltReason·=·done</code>.·This·option·can·be·interrupted·by·one·or·more | 867 | returns·<code·class="inline">HaltReason·=·done</code>.·This·option·can·be·interrupted·by·one·or·more |
| 868 | <code·class="inline">HaltPatterns</code>.·<code·class="inline">MatchList</code>·is·always·returned,·that·is,·a·list·of·<code·class="inline">Match</code> | 868 | <code·class="inline">HaltPatterns</code>.·<code·class="inline">MatchList</code>·is·always·returned,·that·is,·a·list·of·<code·class="inline">Match</code> |
| 869 | instead·of·only·one·<code·class="inline">Match</code>.·Also·<code·class="inline">HaltReason</code>·is·returned.</p></li><li><p><strong><code·class="inline">sequence</code></strong>·-·All·patterns·must·be·matched·in·a·sequence.·A·match·is·not | 869 | instead·of·only·one·<code·class="inline">Match</code>.·Also·<code·class="inline">HaltReason</code>·is·returned.</p></li><li><p><strong><code·class="inline">sequence</code></strong>·-·All·patterns·must·be·matched·in·a·sequence.·A·match·is·not |
| 870 | concluded·until·all·patterns·are·matched.·This·option·can·be·interrupted·by | 870 | concluded·until·all·patterns·are·matched.·This·option·can·be·interrupted·by |
| 871 | one·or·more·<code·class="inline">HaltPatterns</code>.·<code·class="inline">MatchList</code>·is·always·returned,·that·is,·a·list·of | 871 | one·or·more·<code·class="inline">HaltPatterns</code>.·<code·class="inline">MatchList</code>·is·always·returned,·that·is,·a·list·of |
| 872 | <code·class="inline">Match</code>·instead·of·only·one·<code·class="inline">Match</code>.·Also·<code·class="inline">HaltReason</code>·is·returned.</p></li></ul><p><em>Example·1:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">expect</span><span·class="p"·data-group-id="1 | 872 | <code·class="inline">Match</code>·instead·of·only·one·<code·class="inline">Match</code>.·Also·<code·class="inline">HaltReason</code>·is·returned.</p></li></ul><p><em>Example·1:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">expect</span><span·class="p"·data-group-id="1948645202-1">(</span><span·class="n">Connection</span><span·class="p">,</span><span·class="p"·data-group-id="1948645202-2">[</span><span·class="p"·data-group-id="1948645202-3">{</span><span·class="ss">abc</span><span·class="p">,</span><span·class="s">"[·...·truncated·by·diffoscope;·len:·1028,·SHA:·52d56c68e33481777e145768e292901e981a0b5fd6368b249241ca7c04232460·...·]-1">)</span></code></pre><p>First·this·tries·to·match·<code·class="inline">"ABC"</code>,·and·then·<code·class="inline">"XYZ"</code>,·but·if·<code·class="inline">"NNN"</code>·appears,·the |
| 873 | function·returns·<code·class="inline">{error,{nnn,["NNN"]}}</code>.·If·both·<code·class="inline">"ABC"</code>·and·<code·class="inline">"XYZ"</code>·are | 873 | function·returns·<code·class="inline">{error,{nnn,["NNN"]}}</code>.·If·both·<code·class="inline">"ABC"</code>·and·<code·class="inline">"XYZ"</code>·are |
| 874 | matched,·the·function·returns·<code·class="inline">{ok,[AbcMatch,XyzMatch]}</code>.</p><p><em>Example·2:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">expect</span><span·class="p"·data-group-id="33 | 874 | matched,·the·function·returns·<code·class="inline">{ok,[AbcMatch,XyzMatch]}</code>.</p><p><em>Example·2:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">expect</span><span·class="p"·data-group-id="3737081020-1">(</span><span·class="n">Connection</span><span·class="p">,</span><span·class="p"·data-group-id="3737081020-2">[</span><span·class="p"·data-group-id="3737081020-3">{</span><span·class="ss">abc</span><span·class="p">,</span><span·class="s">"[·...·truncated·by·diffoscope;·len:·1181,·SHA:·1fa882e726f04c4d2eb6d224b503a15a2951e4f06a05755aad07b6176fe244d3·...·]-1">)</span></code></pre><p>This·tries·to·match·<code·class="inline">"ABC"</code>·or·<code·class="inline">"XYZ"</code>·twice.·If·<code·class="inline">"NNN"</code>·appears,·the·function |
| 875 | returns·<code·class="inline">HaltReason·=·{nnn,["NNN"]}</code>.</p><p>Options·<code·class="inline">repeat</code>·and·<code·class="inline">sequence</code>·can·be·combined·to·match·a·sequence·multiple | 875 | returns·<code·class="inline">HaltReason·=·{nnn,["NNN"]}</code>.</p><p>Options·<code·class="inline">repeat</code>·and·<code·class="inline">sequence</code>·can·be·combined·to·match·a·sequence·multiple |
| 876 | times.</p> | 876 | times.</p> |
| 877 | ··</section> | 877 | ··</section> |
| 878 | </section> | 878 | </section> |
| 879 | <section·class="detail"·id="get_data/1"> | 879 | <section·class="detail"·id="get_data/1"> |
| 880 | ··<div·class="detail-header"> | 880 | ··<div·class="detail-header"> |
| Offset 157, 73 lines modified | Offset 157, 73 lines modified | ||
| 157 | between·the·cases·and·therefore·introduce·dependencies·between·them.</p><p>To·avoid·this,·we·can·consider·starting·and·stopping·the·server·for·every·test. | 157 | between·the·cases·and·therefore·introduce·dependencies·between·them.</p><p>To·avoid·this,·we·can·consider·starting·and·stopping·the·server·for·every·test. |
| 158 | We·can·thus·implement·the·start·and·stop·action·as·common·functions·to·be·called | 158 | We·can·thus·implement·the·start·and·stop·action·as·common·functions·to·be·called |
| 159 | from·<a·href="ct_suite.html#c:init_per_testcase/2"><code·class="inline">init_per_testcase</code></a>·and | 159 | from·<a·href="ct_suite.html#c:init_per_testcase/2"><code·class="inline">init_per_testcase</code></a>·and |
| 160 | <a·href="ct_suite.html#c:end_per_testcase/2"><code·class="inline">end_per_testcase</code></a>.·(Remember·to·test·the | 160 | <a·href="ct_suite.html#c:end_per_testcase/2"><code·class="inline">end_per_testcase</code></a>.·(Remember·to·test·the |
| 161 | start·and·stop·functionality·separately.)·The·configuration·can·also·be | 161 | start·and·stop·functionality·separately.)·The·configuration·can·also·be |
| 162 | implemented·as·a·common·function,·maybe·grouped·with·the·start·function. | 162 | implemented·as·a·common·function,·maybe·grouped·with·the·start·function. |
| 163 | Finally,·the·testing·of·connecting·and·disconnecting·a·client·can·be·grouped | 163 | Finally,·the·testing·of·connecting·and·disconnecting·a·client·can·be·grouped |
| 164 | into·one·test·case.·The·resulting·suite·can·look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 164 | into·one·test·case.·The·resulting·suite·can·look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="3599747740-1">(</span><span·class="ss">my_server_SUITE</span><span·class="p"·data-group-id="3599747740-1">)</span><span·class="p">.</span><span·class="w"> |
| 165 | </span><span·class="p">-</span><span·class="na">compile</span><span·class="p"·data-group-id=" | 165 | </span><span·class="p">-</span><span·class="na">compile</span><span·class="p"·data-group-id="3599747740-2">(</span><span·class="ss">export_all</span><span·class="p"·data-group-id="3599747740-2">)</span><span·class="p">.</span><span·class="w"> |
| 166 | </span><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id=" | 166 | </span><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="3599747740-3">(</span><span·class="s">"ct.hrl"</span><span·class="p"·data-group-id="3599747740-3">)</span><span·class="p">.</span><span·class="w"> |
| 167 | </span><span·class="c1">%%%·init·and·end·functions...</span><span·class="w"> | 167 | </span><span·class="c1">%%%·init·and·end·functions...</span><span·class="w"> |
| 168 | </span><span·class="nf">suite</span><span·class="p"·data-group-id=" | 168 | </span><span·class="nf">suite</span><span·class="p"·data-group-id="3599747740-4">(</span><span·class="p"·data-group-id="3599747740-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="3599747740-5">[</span><span·class="p"·data-group-id="3599747740-6">{</span[·...·truncated·by·diffoscope;·len:·187,·SHA:·6152ebf2517950c6c376b54865d9f76b7ce1e3a2276b48a98811e364336c0792·...·]-5">]</span><span·class="p">.</span><span·class="w"> |
| 169 | </span><span·class="nf">init_per_testcase</span><span·class="p"·data-group-id=" | 169 | </span><span·class="nf">init_per_testcase</span><span·class="p"·data-group-id="3599747740-7">(</span><span·class="ss">start_and_stop</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Config</span><span·class="p"·data-group-id="3599747740-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 170 | ····</span><span·class="n">Config</span><span·class="p">;</span><span·class="w"> | 170 | ····</span><span·class="n">Config</span><span·class="p">;</span><span·class="w"> |
| 171 | </span><span·class="nf">init_per_testcase</span><span·class="p"·data-group-id=" | 171 | </span><span·class="nf">init_per_testcase</span><span·class="p"·data-group-id="3599747740-8">(</span><span·class="ss">config</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Config</span><span·class="p"·data-group-id="3599747740-8">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 172 | ····</span><span·class="p"·data-group-id=" | 172 | ····</span><span·class="p"·data-group-id="3599747740-9">[</span><span·class="p"·data-group-id="3599747740-10">{</span><span·class="ss">server_pid</span><span·class="p">,</span><span·class="nf">start_server</span><span·class="p"·data-group-id="3599747740-11">(</span><span·class="p"·data-group-id="3[·...·truncated·by·diffoscope;·len:·218,·SHA:·94551f27bfbbc3826b4450c44faa01bd42fba84b0642ce38bd6a7c711b5e625e·...·]-9">]</span><span·class="p">;</span><span·class="w"> |
| 173 | </span><span·class="nf">init_per_testcase</span><span·class="p"·data-group-id=" | 173 | </span><span·class="nf">init_per_testcase</span><span·class="p"·data-group-id="3599747740-12">(</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Config</span><span·class="p"·data-group-id="3599747740-12">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 174 | ····</span><span·class="n">ServerPid</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">start_server</span><span·class="p"·data-group-id=" | 174 | ····</span><span·class="n">ServerPid</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">start_server</span><span·class="p"·data-group-id="3599747740-13">(</span><span·class="p"·data-group-id="3599747740-13">)</span><span·class="p">,</span><span·class="w"> |
| 175 | ····</span><span·class="nf">configure_server</span><span·class="p"·data-group-id=" | 175 | ····</span><span·class="nf">configure_server</span><span·class="p"·data-group-id="3599747740-14">(</span><span·class="p"·data-group-id="3599747740-14">)</span><span·class="p">,</span><span·class="w"> |
| 176 | ····</span><span·class="p"·data-group-id=" | 176 | ····</span><span·class="p"·data-group-id="3599747740-15">[</span><span·class="p"·data-group-id="3599747740-16">{</span><span·class="ss">server_pid</span><span·class="p">,</span><span·class="n">ServerPid</span><span·class="p"·data-group-id="3599747740-16">}</span><span·class="w">·</span><span·class[·...·truncated·by·diffoscope;·len:·107,·SHA:·b89c0c8d7eee9d61bd15884319cedb7022d2107496c5228d01b401850b50298e·...·]-15">]</span><span·class="p">.</span><span·class="w"> |
| 177 | </span><span·class="nf">end_per_testcase</span><span·class="p"·data-group-id=" | 177 | </span><span·class="nf">end_per_testcase</span><span·class="p"·data-group-id="3599747740-17">(</span><span·class="ss">start_and_stop</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="p"·data-group-id="3599747740-17">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 178 | ····</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> | 178 | ····</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> |
| 179 | </span><span·class="nf">end_per_testcase</span><span·class="p"·data-group-id=" | 179 | </span><span·class="nf">end_per_testcase</span><span·class="p"·data-group-id="3599747740-18">(</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Config</span><span·class="p"·data-group-id="3599747740-18">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 180 | ····</span><span·class="n">ServerPid</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id=" | 180 | ····</span><span·class="n">ServerPid</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id="3599747740-19">(</span><span·class="ss">server_pid</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Config</span><span·class="p"·data-group-id="3599747740-19">)</span><span·class="p">,</span><span·class="w"> |
| 181 | ····</span><span·class="nf">stop_server</span><span·class="p"·data-group-id=" | 181 | ····</span><span·class="nf">stop_server</span><span·class="p"·data-group-id="3599747740-20">(</span><span·class="n">ServerPid</span><span·class="p"·data-group-id="3599747740-20">)</span><span·class="p">.</span><span·class="w"> |
| 182 | </span><span·class="c1">%%%·test·cases...</span><span·class="w"> | 182 | </span><span·class="c1">%%%·test·cases...</span><span·class="w"> |
| 183 | </span><span·class="nf">all</span><span·class="p"·data-group-id=" | 183 | </span><span·class="nf">all</span><span·class="p"·data-group-id="3599747740-21">(</span><span·class="p"·data-group-id="3599747740-21">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="3599747740-22">[</span><span·class="ss">start_and_stop</span><span·class[·...·truncated·by·diffoscope;·len:·202,·SHA:·bae529f9444bca1df9f90473c893157b9250cc522b54126d4876aaf08b04108a·...·]-22">]</span><span·class="p">.</span><span·class="w"> |
| 184 | </span><span·class="c1">%%·test·that·starting·and·stopping·works</span><span·class="w"> | 184 | </span><span·class="c1">%%·test·that·starting·and·stopping·works</span><span·class="w"> |
| 185 | </span><span·class="nf">start_and_stop</span><span·class="p"·data-group-id=" | 185 | </span><span·class="nf">start_and_stop</span><span·class="p"·data-group-id="3599747740-23">(</span><span·class="p">_</span><span·class="p"·data-group-id="3599747740-23">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 186 | ····</span><span·class="n">ServerPid</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">start_server</span><span·class="p"·data-group-id=" | 186 | ····</span><span·class="n">ServerPid</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">start_server</span><span·class="p"·data-group-id="3599747740-24">(</span><span·class="p"·data-group-id="3599747740-24">)</span><span·class="p">,</span><span·class="w"> |
| 187 | ····</span><span·class="nf">stop_server</span><span·class="p"·data-group-id=" | 187 | ····</span><span·class="nf">stop_server</span><span·class="p"·data-group-id="3599747740-25">(</span><span·class="n">ServerPid</span><span·class="p"·data-group-id="3599747740-25">)</span><span·class="p">.</span><span·class="w"> |
| 188 | </span><span·class="c1">%%·configuration·test</span><span·class="w"> | 188 | </span><span·class="c1">%%·configuration·test</span><span·class="w"> |
| 189 | </span><span·class="nf">config</span><span·class="p"·data-group-id=" | 189 | </span><span·class="nf">config</span><span·class="p"·data-group-id="3599747740-26">(</span><span·class="n">Config</span><span·class="p"·data-group-id="3599747740-26">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 190 | ····</span><span·class="n">ServerPid</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id=" | 190 | ····</span><span·class="n">ServerPid</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id="3599747740-27">(</span><span·class="ss">server_pid</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Config</span><span·class="p"·data-group-id="3599747740-27">)</span><span·class="p">,</span><span·class="w"> |
| 191 | ····</span><span·class="nf">configure_server</span><span·class="p"·data-group-id=" | 191 | ····</span><span·class="nf">configure_server</span><span·class="p"·data-group-id="3599747740-28">(</span><span·class="n">ServerPid</span><span·class="p"·data-group-id="3599747740-28">)</span><span·class="p">.</span><span·class="w"> |
| 192 | </span><span·class="c1">%%·test·connecting·and·disconnecting·client</span><span·class="w"> | 192 | </span><span·class="c1">%%·test·connecting·and·disconnecting·client</span><span·class="w"> |
| 193 | </span><span·class="nf">connect_and_disconnect</span><span·class="p"·data-group-id=" | 193 | </span><span·class="nf">connect_and_disconnect</span><span·class="p"·data-group-id="3599747740-29">(</span><span·class="n">Config</span><span·class="p"·data-group-id="3599747740-29">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 194 | ····</span><span·class="n">ServerPid</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id=" | 194 | ····</span><span·class="n">ServerPid</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id="3599747740-30">(</span><span·class="ss">server_pid</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Config</span><span·class="p"·data-group-id="3599747740-30">)</span><span·class="p">,</span><span·class="w"> |
| 195 | ····</span><span·class="p"·data-group-id=" | 195 | ····</span><span·class="p"·data-group-id="3599747740-31">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">SessionId</span><span·class="p"·data-group-id="3599747740-31">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">my_serve[·...·truncated·by·diffoscope;·len:·190,·SHA:·42a39718835ea3b6d7daf6a2eb9cf9e0af3f116f8104427b8e49964a39a80066·...·]-32">)</span><span·class="p">,</span><span·class="w"> |
| 196 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">my_server</span><span·class="p">:</span><span·class="nf">disconnect</span><span·class="p"·data-group-id=" | 196 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">my_server</span><span·class="p">:</span><span·class="nf">disconnect</span><span·class="p"·data-group-id="3599747740-33">(</span><span·class="n">ServerPid</span><span·class="p">,</span><span·class="w">·</span><span·class="n">SessionId</span><span·class="p"·data-group-id="3599747740-33">)</span><span·class="p">.</span><span·class="w"> |
| 197 | </span><span·class="c1">%%%·common·functions...</span><span·class="w"> | 197 | </span><span·class="c1">%%%·common·functions...</span><span·class="w"> |
| 198 | </span><span·class="nf">start_server</span><span·class="p"·data-group-id=" | 198 | </span><span·class="nf">start_server</span><span·class="p"·data-group-id="3599747740-34">(</span><span·class="p"·data-group-id="3599747740-34">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 199 | ····</span><span·class="p"·data-group-id=" | 199 | ····</span><span·class="p"·data-group-id="3599747740-35">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">ServerPid</span><span·class="p"·data-group-id="3599747740-35">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">my_serve[·...·truncated·by·diffoscope;·len:·156,·SHA:·5b93de0b4aad4b076ee5cf9c8eed20b46ead9de4cc212d35a225d8bad68cb29d·...·]-36">)</span><span·class="p">,</span><span·class="w"> |
| 200 | ····</span><span·class="n">ServerPid</span><span·class="p">.</span><span·class="w"> | 200 | ····</span><span·class="n">ServerPid</span><span·class="p">.</span><span·class="w"> |
| 201 | </span><span·class="nf">stop_server</span><span·class="p"·data-group-id=" | 201 | </span><span·class="nf">stop_server</span><span·class="p"·data-group-id="3599747740-37">(</span><span·class="n">ServerPid</span><span·class="p"·data-group-id="3599747740-37">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 202 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">my_server</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id=" | 202 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">my_server</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id="3599747740-38">(</span><span·class="p"·data-group-id="3599747740-38">)</span><span·class="p">,</span><span·class="w"> |
| 203 | ····</span><span·class="ss">ok</span><span·class="p">.</span><span·class="w"> | 203 | ····</span><span·class="ss">ok</span><span·class="p">.</span><span·class="w"> |
| 204 | </span><span·class="nf">configure_server</span><span·class="p"·data-group-id=" | 204 | </span><span·class="nf">configure_server</span><span·class="p"·data-group-id="3599747740-39">(</span><span·class="n">ServerPid</span><span·class="p"·data-group-id="3599747740-39">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 205 | ····</span><span·class="n">ServerCfgData</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">get_config</span><span·class="p"·data-group-id=" | 205 | ····</span><span·class="n">ServerCfgData</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">get_config</span><span·class="p"·data-group-id="3599747740-40">(</span><span·class="ss">my_server_cfg</span><span·class="p"·data-group-id="3599747740-40">)</span><span·class="p">,</span><span·class="w"> |
| 206 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">my_server</span><span·class="p">:</span><span·class="nf">configure</span><span·class="p"·data-group-id=" | 206 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">my_server</span><span·class="p">:</span><span·class="nf">configure</span><span·class="p"·data-group-id="3599747740-41">(</span><span·class="n">ServerPid</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ServerCfgData</span><span·class="p"·data-group-id="3599747740-41">)</span><span·class="p">,</span><span·class="w"> |
| 207 | ····</span><span·class="ss">ok</span><span·class="p">.</span></code></pre><p><a·href=""·id="save_config"></a></p><h2·id="saving-configuration-data"·class="section-heading"> | 207 | ····</span><span·class="ss">ok</span><span·class="p">.</span></code></pre><p><a·href=""·id="save_config"></a></p><h2·id="saving-configuration-data"·class="section-heading"> |
| 208 | ··<a·href="#saving-configuration-data"·class="hover-link"> | 208 | ··<a·href="#saving-configuration-data"·class="hover-link"> |
| 209 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 209 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 210 | ··</a> | 210 | ··</a> |
| 211 | ··<span·class="text">Saving·Configuration·Data</span> | 211 | ··<span·class="text">Saving·Configuration·Data</span> |
| 212 | </h2> | 212 | </h2> |
| 213 | <p>Sometimes·it·is·impossible,·or·infeasible,·to·implement·independent·test·cases. | 213 | <p>Sometimes·it·is·impossible,·or·infeasible,·to·implement·independent·test·cases. |
| Offset 243, 48 lines modified | Offset 243, 48 lines modified | ||
| 243 | <code·class="inline">Saver</code>·is·always·matched·to·the·expected·name·of·the·saving·test·case.·This | 243 | <code·class="inline">Saver</code>·is·always·matched·to·the·expected·name·of·the·saving·test·case.·This |
| 244 | way,·problems·because·of·restructuring·of·the·test·suite·can·be·avoided.·Also, | 244 | way,·problems·because·of·restructuring·of·the·test·suite·can·be·avoided.·Also, |
| 245 | it·makes·the·dependency·more·explicit·and·the·test·suite·easier·to·read·and | 245 | it·makes·the·dependency·more·explicit·and·the·test·suite·easier·to·read·and |
| 246 | maintain.</p><p>To·pass·data·from·one·test·suite·to·another,·the·same·mechanism·is·used.·The | 246 | maintain.</p><p>To·pass·data·from·one·test·suite·to·another,·the·same·mechanism·is·used.·The |
| 247 | data·is·to·be·saved·by·finction·<a·href="ct_suite.html#c:end_per_suite/1"><code·class="inline">end_per_suite</code></a> | 247 | data·is·to·be·saved·by·finction·<a·href="ct_suite.html#c:end_per_suite/1"><code·class="inline">end_per_suite</code></a> |
| 248 | and·read·by·function·<a·href="ct_suite.html#c:init_per_suite/1"><code·class="inline">init_per_suite</code></a>·in·the | 248 | and·read·by·function·<a·href="ct_suite.html#c:init_per_suite/1"><code·class="inline">init_per_suite</code></a>·in·the |
| 249 | suite·that·follows.·When·passing·data·between·suites,·<code·class="inline">Saver</code>·carries·the·name | 249 | suite·that·follows.·When·passing·data·between·suites,·<code·class="inline">Saver</code>·carries·the·name |
| 250 | of·the·test·suite.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 250 | of·the·test·suite.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="9479987833-1">(</span><span·class="ss">server_b_SUITE</span><span·class="p"·data-group-id="9479987833-1">)</span><span·class="p">.</span><span·class="w"> |
| 251 | </span><span·class="p">-</span><span·class="na">compile</span><span·class="p"·data-group-id=" | 251 | </span><span·class="p">-</span><span·class="na">compile</span><span·class="p"·data-group-id="9479987833-2">(</span><span·class="ss">export_all</span><span·class="p"·data-group-id="9479987833-2">)</span><span·class="p">.</span><span·class="w"> |
| 252 | </span><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id=" | 252 | </span><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="9479987833-3">(</span><span·class="s">"ct.hrl"</span><span·class="p"·data-group-id="9479987833-3">)</span><span·class="p">.</span><span·class="w"> |
| 253 | </span><span·class="c1">%%%·init·and·end·functions...</span><span·class="w"> | 253 | </span><span·class="c1">%%%·init·and·end·functions...</span><span·class="w"> |
| 254 | </span><span·class="nf">init_per_suite</span><span·class="p"·data-group-id=" | 254 | </span><span·class="nf">init_per_suite</span><span·class="p"·data-group-id="9479987833-4">(</span><span·class="n">Config</span><span·class="p"·data-group-id="9479987833-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 255 | ····</span><span·class="c1">%%·read·config·saved·by·previous·test·suite</span><span·class="w"> | 255 | ····</span><span·class="c1">%%·read·config·saved·by·previous·test·suite</span><span·class="w"> |
| 256 | ····</span><span·class="p"·data-group-id=" | 256 | ····</span><span·class="p"·data-group-id="9479987833-5">{</span><span·class="ss">server_a_SUITE</span><span·class="p">,</span><span·class="n">OldConfig</span><span·class="p"·data-group-id="9479987833-5">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc[·...·truncated·by·diffoscope;·len:·282,·SHA:·a56059be8059e9816da2e33f789a24cab11530189ce6fb910e47be3f81134f8b·...·]-6">)</span><span·class="p">,</span><span·class="w"> |
| 257 | ····</span><span·class="c1">%%·extract·server·identity·(comes·from·server_a_SUITE)</span><span·class="w"> | 257 | ····</span><span·class="c1">%%·extract·server·identity·(comes·from·server_a_SUITE)</span><span·class="w"> |
| 258 | ····</span><span·class="n">ServerId</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id=" | 258 | ····</span><span·class="n">ServerId</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id="9479987833-7">(</span><span·class="ss">server_id</span><span·class="p">,</span><span·class="w">·</span><span·class="n">OldConfig</span><span·class="p"·data-group-id="9479987833-7">)</span><span·class="p">,</span><span·class="w"> |
| 259 | ····</span><span·class="n">SessionId</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">connect_to_server</span><span·class="p"·data-group-id=" | 259 | ····</span><span·class="n">SessionId</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">connect_to_server</span><span·class="p"·data-group-id="9479987833-8">(</span><span·class="n">ServerId</span><span·class="p"·data-group-id="9479987833-8">)</span><span·class="p">,</span><span·class="w"> |
| 260 | ····</span><span·class="p"·data-group-id=" | 260 | ····</span><span·class="p"·data-group-id="9479987833-9">[</span><span·class="p"·data-group-id="9479987833-10">{</span><span·class="ss">ids</span><span·class="p">,</span><span·class="p"·data-group-id="9479987833-11">{</span><span·class="n">ServerId</span><span·class="p">,</span><span·class="n">Sess[·...·truncated·by·diffoscope;·len:·262,·SHA:·100cc147a9238197b9f4c1b50d9fc5bf891aef6eb88438da59b5887672d184d0·...·]-9">]</span><span·class="p">.</span><span·class="w"> |
| 261 | </span><span·class="nf">end_per_suite</span><span·class="p"·data-group-id=" | 261 | </span><span·class="nf">end_per_suite</span><span·class="p"·data-group-id="9479987833-12">(</span><span·class="n">Config</span><span·class="p"·data-group-id="9479987833-12">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 262 | ····</span><span·class="c1">%%·save·config·for·server_c_SUITE·(session_id·and·server_id)</span><span·class="w"> | 262 | ····</span><span·class="c1">%%·save·config·for·server_c_SUITE·(session_id·and·server_id)</span><span·class="w"> |
| 263 | ····</span><span·class="p"·data-group-id=" | 263 | ····</span><span·class="p"·data-group-id="9479987833-13">{</span><span·class="ss">save_config</span><span·class="p">,</span><span·class="n">Config</span><span·class="p"·data-group-id="9479987833-13">}</span><span·class="w"> |
| 264 | </span><span·class="c1">%%%·test·cases...</span><span·class="w"> | 264 | </span><span·class="c1">%%%·test·cases...</span><span·class="w"> |
| 265 | </span><span·class="nf">all</span><span·class="p"·data-group-id=" | 265 | </span><span·class="nf">all</span><span·class="p"·data-group-id="9479987833-14">(</span><span·class="p"·data-group-id="9479987833-14">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="9479987833-15">[</span><span·class="ss">allocate</span><span·class="p">,[·...·truncated·by·diffoscope;·len:·106,·SHA:·fd7bca10528b6c45275dad571bfade41bb03e3c8d3f103011b52888f56904ec8·...·]-15">]</span><span·class="p">.</span><span·class="w"> |
| 266 | </span><span·class="nf">allocate</span><span·class="p"·data-group-id=" | 266 | </span><span·class="nf">allocate</span><span·class="p"·data-group-id="9479987833-16">(</span><span·class="n">Config</span><span·class="p"·data-group-id="9479987833-16">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 267 | ····</span><span·class="p"·data-group-id=" | 267 | ····</span><span·class="p"·data-group-id="9479987833-17">{</span><span·class="n">ServerId</span><span·class="p">,</span><span·class="n">SessionId</span><span·class="p"·data-group-id="9479987833-17">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">pro[·...·truncated·by·diffoscope;·len:·269,·SHA:·628c3bdff67b9516d8b986dc1af38923d3e684a86a8afe5d60bc38fd038db025·...·]-18">)</span><span·class="p">,</span><span·class="w"> |
| 268 | ····</span><span·class="p"·data-group-id=" | 268 | ····</span><span·class="p"·data-group-id="9479987833-19">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">Handle</span><span·class="p"·data-group-id="9479987833-19">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">allocate_re[·...·truncated·by·diffoscope;·len:·219,·SHA:·e4d5517e843a4392d60060dce0e29cbba5cd084279ebd149e23ff66e5fbde3a1·...·]-20">)</span><span·class="p">,</span><span·class="w"> |
| 269 | ····</span><span·class="c1">%%·save·handle·for·deallocation·test</span><span·class="w"> | 269 | ····</span><span·class="c1">%%·save·handle·for·deallocation·test</span><span·class="w"> |
| 270 | ····</span><span·class="n">NewConfig</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 270 | ····</span><span·class="n">NewConfig</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="9479987833-21">[</span><span·class="p"·data-group-id="9479987833-22">{</span><span·class="ss">handle</span><span·class="p">,</span><span·class="n">Handle</span><span·class="p"·data-group-id="9479987833-22">}</span><span·class="p"·data-group-id="9479987833-21">]</span><span·class="p">,</span><span·class="w"> |
| 271 | ····</span><span·class="p"·data-group-id=" | 271 | ····</span><span·class="p"·data-group-id="9479987833-23">{</span><span·class="ss">save_config</span><span·class="p">,</span><span·class="n">NewConfig</span><span·class="p"·data-group-id="9479987833-23">}</span><span·class="p">.</span><span·class="w"> |
| 272 | </span><span·class="nf">deallocate</span><span·class="p"·data-group-id=" | 272 | </span><span·class="nf">deallocate</span><span·class="p"·data-group-id="9479987833-24">(</span><span·class="n">Config</span><span·class="p"·data-group-id="9479987833-24">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 273 | ····</span><span·class="p"·data-group-id=" | 273 | ····</span><span·class="p"·data-group-id="9479987833-25">{</span><span·class="n">ServerId</span><span·class="p">,</span><span·class="n">SessionId</span><span·class="p"·data-group-id="9479987833-25">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">pro[·...·truncated·by·diffoscope;·len:·269,·SHA:·24ccb0570eac3cf0f8925fed38b65b624fed7b4862bc040c177dfc3146eefe5c·...·]-26">)</span><span·class="p">,</span><span·class="w"> |
| 274 | ····</span><span·class="p"·data-group-id=" | 274 | ····</span><span·class="p"·data-group-id="9479987833-27">{</span><span·class="ss">allocate</span><span·class="p">,</span><span·class="n">OldConfig</span><span·class="p"·data-group-id="9479987833-27">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">pr[·...·truncated·by·diffoscope;·len:·279,·SHA:·fe7737948afdd4131e502600252f3671024fa47485e065843eaaf5a34e7dcc57·...·]-28">)</span><span·class="p">,</span><span·class="w"> |
| 275 | ····</span><span·class="n">Handle</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id=" | 275 | ····</span><span·class="n">Handle</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id="9479987833-29">(</span><span·class="ss">handle</span><span·class="p">,</span><span·class="w">·</span><span·class="n">OldConfig</span><span·class="p"·data-group-id="9479987833-29">)</span><span·class="p">,</span><span·class="w"> |
| 276 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">deallocate_resource</span><span·class="p"·data-group-id=" | 276 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">deallocate_resource</span><span·class="p"·data-group-id="9479987833-30">(</span><span·class="n">ServerId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">SessionId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Handle</span><span·class="p"·data-group-id="9479987833-30">)</span><span·class="p">.</span></code></pre><p>To·save·<code·class="inline">Config</code>·data·from·a·test·case·that·is·to·be·skipped,·return·tuple |
| 277 | <code·class="inline">{skip_and_save,Reason,ConfigList}</code>.</p><p>The·result·is·that·the·test·case·is·skipped·with·<code·class="inline">Reason</code>·printed·to·the·log | 277 | <code·class="inline">{skip_and_save,Reason,ConfigList}</code>.</p><p>The·result·is·that·the·test·case·is·skipped·with·<code·class="inline">Reason</code>·printed·to·the·log |
| 278 | file·(as·described·earlier)·and·<code·class="inline">ConfigList</code>·is·saved·for·the·next·test·case. | 278 | file·(as·described·earlier)·and·<code·class="inline">ConfigList</code>·is·saved·for·the·next·test·case. |
| 279 | <code·class="inline">ConfigList</code>·can·be·read·using·<code·class="inline">proplists:get_value(saved_config,·Config)</code>,·as | 279 | <code·class="inline">ConfigList</code>·can·be·read·using·<code·class="inline">proplists:get_value(saved_config,·Config)</code>,·as |
| 280 | described·earlier.·<code·class="inline">skip_and_save</code>·can·also·be·returned·from·<code·class="inline">init_per_suite</code>. | 280 | described·earlier.·<code·class="inline">skip_and_save</code>·can·also·be·returned·from·<code·class="inline">init_per_suite</code>. |
| 281 | In·this·case,·the·saved·data·can·be·read·by·<code·class="inline">init_per_suite</code>·in·the·suite·that | 281 | In·this·case,·the·saved·data·can·be·read·by·<code·class="inline">init_per_suite</code>·in·the·suite·that |
| 282 | follows.</p><h2·id="sequences"·class="section-heading"> | 282 | follows.</p><h2·id="sequences"·class="section-heading"> |
| 283 | ··<a·href="#sequences"·class="hover-link"> | 283 | ··<a·href="#sequences"·class="hover-link"> |
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| 296 | following·tests·are·not·to·be·executed.·Typically,·if·the·<code·class="inline">save_config</code>·facility | 296 | following·tests·are·not·to·be·executed.·Typically,·if·the·<code·class="inline">save_config</code>·facility |
| 297 | is·used·and·a·test·case·that·is·expected·to·save·data·crashes,·the·following | 297 | is·used·and·a·test·case·that·is·expected·to·save·data·crashes,·the·following |
| 298 | case·cannot·run.·<code·class="inline">Common·Test</code>·offers·a·way·to·declare·such·dependencies,·called | 298 | case·cannot·run.·<code·class="inline">Common·Test</code>·offers·a·way·to·declare·such·dependencies,·called |
| 299 | sequences.</p><p>A·sequence·of·test·cases·is·defined·as·a·test·case·group·with·a·<code·class="inline">sequence</code> | 299 | sequences.</p><p>A·sequence·of·test·cases·is·defined·as·a·test·case·group·with·a·<code·class="inline">sequence</code> |
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| 164 | </h2> | 164 | </h2> |
| 165 | <p>Event·handlers·can·be·installed·by·an·<code·class="inline">event_handler</code>·start·flag | 165 | <p>Event·handlers·can·be·installed·by·an·<code·class="inline">event_handler</code>·start·flag |
| 166 | (<a·href="ct_run_cmd.html"><code·class="inline">ct_run</code></a>)·or·option·<a·href="ct.html#run_test/1"><code·class="inline">ct:run_test/1</code></a>,·where·the·argument | 166 | (<a·href="ct_run_cmd.html"><code·class="inline">ct_run</code></a>)·or·option·<a·href="ct.html#run_test/1"><code·class="inline">ct:run_test/1</code></a>,·where·the·argument |
| 167 | specifies·the·names·of·one·or·more·event·handler·modules.</p><p><em>Example:</em></p><p><code·class="inline">$·ct_run·-suite·test/my_SUITE·-event_handler·handlers/my_evh1·handlers/my_evh2·-pa·$PWD/handlers</code></p><p>To·pass·start·arguments·to·the·event·handler·init·function,·use·option | 167 | specifies·the·names·of·one·or·more·event·handler·modules.</p><p><em>Example:</em></p><p><code·class="inline">$·ct_run·-suite·test/my_SUITE·-event_handler·handlers/my_evh1·handlers/my_evh2·-pa·$PWD/handlers</code></p><p>To·pass·start·arguments·to·the·event·handler·init·function,·use·option |
| 168 | <code·class="inline">ct_run·-event_handler_init</code>·instead·of·<code·class="inline">-event_handler</code>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>All·event·handler·modules·must·have·<code·class="inline">gen_event</code>·behavior.·These·modules·must | 168 | <code·class="inline">ct_run·-event_handler_init</code>·instead·of·<code·class="inline">-event_handler</code>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>All·event·handler·modules·must·have·<code·class="inline">gen_event</code>·behavior.·These·modules·must |
| 169 | be·precompiled·and·their·locations·must·be·added·explicitly·to·the·Erlang·code | 169 | be·precompiled·and·their·locations·must·be·added·explicitly·to·the·Erlang·code |
| 170 | server·search·path·(as·in·the·previous·example).</p></section><p>An·event_handler·tuple·in·argument·<code·class="inline">Opts</code>·has·the·following·definition·(see | 170 | server·search·path·(as·in·the·previous·example).</p></section><p>An·event_handler·tuple·in·argument·<code·class="inline">Opts</code>·has·the·following·definition·(see |
| 171 | <a·href="ct.html#run_test/1"><code·class="inline">ct:run_test/1</code></a>):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 171 | <a·href="ct.html#run_test/1"><code·class="inline">ct:run_test/1</code></a>):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="1883498247-1">{</span><span·class="ss">event_handler</span><span·class="p">,</span><span·class="n">EventHandlers</span><span·class="p"·data-group-id="1883498247-1">}</span><span·class="w"> |
| 172 | </span><span·class="n">EventHandlers</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">EH</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id=" | 172 | </span><span·class="n">EventHandlers</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">EH</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="1883498247-2">[</span><span·class="n">EH</span><span·class="p"·data-group-id="1883498247-2">]</span><span·class="w"> |
| 173 | </span><span·class="n">EH</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="6685473298-3">(</span><span·class="p"·data-group-id="6685473298-3">)</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="6685473298-4">{</span><span·class="nf">atom</span><span·class="p"·data-group-id="6685473298-5">(</span><span·class="p"·data-group-id="6685473298-5">)</span><span·class="p">,</span><span·class="n">InitArgs</span><span·class="p"·data-group-id="6685473298-4">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="6685473298-6">{</span><span·class="p"·data-group-id="6685473298-7">[</span><span·class="nf">atom</span><span·class="p"·data-group-id="6685473298-8">(</span><span·class="p"·data-group-id="6685473298-8">)</span><span·class="p"·data-group-id="6685473298-7">]</span><span·class="p">,</span><span·class="n">InitArgs</span><span·class="p"·data-group-id="6685473298-6">}</span><span·class="w"> | ||
| 174 | </span><span·class="n">InitArgs</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6685473298-9">[</span><span·class="nf">term</span><span·class="p"·data-group-id="6685473298-10">(</span><span·class="p"·data-group-id="6685473298-10">)</span><span·class="p"·data-group-id="6685473298-9">]</span></code></pre><p>In·the·following·example,·two·event·handlers·for·the·<code·class="inline">my_SUITE</code>·test·are | ||
| 175 | 173 | </span><span·class="n">EH</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="1883498247-3">(</span><span·class="p"·data-group-id="1883498247-3">)</span><span·class="w">·<[·...·truncated·by·diffoscope;·len:·838,·SHA:·abee66e3c59177583e2decd173f3074b713a19935bd678a1b32b8768abeffcf0·...·] | |
| 174 | </span><span·class="n">InitArgs</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="1883498247-9">[</span><span·class="nf">term</span><span·class="p"·data-group-id="1883498247-10">(</span><span·class="p"·data-group-id="1883498247-10">)</span><span·class="p"·data-group-id="1883498247-9">]</span></code></pre><p>In·the·following·example,·two·event·handlers·for·the·<code·class="inline">my_SUITE</code>·test·are | ||
| 175 | installed:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">run_test</span><span·class="p"·data-group-id="5276158700-1">(</span><span·class="p"·data-group-id="5276158700-2">[</span><span·class="p"·data-group-id="5276158700-3">{</span><span·class="ss">suite</span><span·class="p">,</span><span·class="s">"test/my_SUITE"</span><span·class="p"·data-group-id="5276158700-3">}</span><span·class="p">,</span><span·class="p"·data-group-id="5276158700-4">{</span><span·class="ss">event_handler</span><span·class="p">,</span><span·class="p"·data-group-id="5276158700-5">[</span><span·class="ss">my_evh1</span><span·class="p">,</span><span·class="p"·data-group-id="5276158700-6">{</span><span·class="ss">my_evh2</span><span·class="p">,</span><span·class="p"·data-group-id="5276158700-7">[</span><span·class="nf">node</span><span·class="p"·data-group-id="5276158700-8">(</span><span·class="p"·data-group-id="5276158700-8">)</span><span·class="p"·data-group-id="5276158700-7">]</span><span·class="p"·data-group-id="5276158700-6">}</span><span·class="p"·data-group-id="5276158700-5">]</span><span·class="p"·data-group-id="5276158700-4">}</span><span·class="p"·data-group-id="5276158700-2">]</span><span·class="p"·data-group-id="5276158700-1">)</span><span·class="p">.</span></code></pre><p>Event·handler·<code·class="inline">my_evh1</code>·is·started·with·<code·class="inline">[]</code>·as·argument·to·the·init·function. | ||
| 176 | Event·handler·<code·class="inline">my_evh2</code>·is·started·with·the·name·of·the·current·node·in·the·init | 176 | Event·handler·<code·class="inline">my_evh2</code>·is·started·with·the·name·of·the·current·node·in·the·init |
| 177 | argument·list.</p><p>Event·handlers·can·also·be·plugged·in·using·one·of·the·following | 177 | argument·list.</p><p>Event·handlers·can·also·be·plugged·in·using·one·of·the·following |
| 178 | <a·href="run_test_chapter.html#test_specifications">test·specification</a>·terms:</p><ul><li><code·class="inline">{event_handler,·EventHandlers}</code></li><li><code·class="inline">{event_handler,·EventHandlers,·InitArgs}</code></li><li><code·class="inline">{event_handler,·NodeRefs,·EventHandlers}</code></li><li><code·class="inline">{event_handler,·NodeRefs,·EventHandlers,·InitArgs}</code></li></ul><p><code·class="inline">EventHandlers</code>·is·a·list·of·module·names.·Before·a·test·session·starts,·the | 178 | <a·href="run_test_chapter.html#test_specifications">test·specification</a>·terms:</p><ul><li><code·class="inline">{event_handler,·EventHandlers}</code></li><li><code·class="inline">{event_handler,·EventHandlers,·InitArgs}</code></li><li><code·class="inline">{event_handler,·NodeRefs,·EventHandlers}</code></li><li><code·class="inline">{event_handler,·NodeRefs,·EventHandlers,·InitArgs}</code></li></ul><p><code·class="inline">EventHandlers</code>·is·a·list·of·module·names.·Before·a·test·session·starts,·the |
| 179 | init·function·of·each·plugged·in·event·handler·is·called·(with·the·<code·class="inline">InitArgs</code> | 179 | init·function·of·each·plugged·in·event·handler·is·called·(with·the·<code·class="inline">InitArgs</code> |
| 180 | list·as·argument·or·<code·class="inline">[]</code>·if·no·start·arguments·are·specified).</p><p>To·plug·in·a·handler·to·the·<code·class="inline">Common·Test</code>·Master·event·manager,·specify·<code·class="inline">master</code> | 180 | list·as·argument·or·<code·class="inline">[]</code>·if·no·start·arguments·are·specified).</p><p>To·plug·in·a·handler·to·the·<code·class="inline">Common·Test</code>·Master·event·manager,·specify·<code·class="inline">master</code> |
| 181 | as·the·node·in·<code·class="inline">NodeRefs</code>.</p><p>To·be·able·to·match·on·events,·the·event·handler·module·must·include·the·header | 181 | as·the·node·in·<code·class="inline">NodeRefs</code>.</p><p>To·be·able·to·match·on·events,·the·event·handler·module·must·include·the·header |
| 182 | file·<code·class="inline">ct_event.hrl</code>.·An·event·is·a·record·with·the·following·definition:</p><p><code·class="inline">#event{name,·node,·data}</code></p><ul><li><p><strong><code·class="inline">name</code></strong>·-·Label·(type)·of·the·event.</p></li><li><p><strong><code·class="inline">node</code></strong>·-·Name·of·the·node·that·the·event·originated·from·(only·relevant | 182 | file·<code·class="inline">ct_event.hrl</code>.·An·event·is·a·record·with·the·following·definition:</p><p><code·class="inline">#event{name,·node,·data}</code></p><ul><li><p><strong><code·class="inline">name</code></strong>·-·Label·(type)·of·the·event.</p></li><li><p><strong><code·class="inline">node</code></strong>·-·Name·of·the·node·that·the·event·originated·from·(only·relevant |
| Offset 127, 136 lines modified | Offset 127, 136 lines modified | ||
| 127 | <p><a·href=""·id="top"></a></p><h2·id="test-suite-example"·class="section-heading"> | 127 | <p><a·href=""·id="top"></a></p><h2·id="test-suite-example"·class="section-heading"> |
| 128 | ··<a·href="#test-suite-example"·class="hover-link"> | 128 | ··<a·href="#test-suite-example"·class="hover-link"> |
| 129 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 129 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 130 | ··</a> | 130 | ··</a> |
| 131 | ··<span·class="text">Test·Suite·Example</span> | 131 | ··<span·class="text">Test·Suite·Example</span> |
| 132 | </h2> | 132 | </h2> |
| 133 | <p>The·following·example·test·suite·shows·some·tests·of·a·database·server:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 133 | <p>The·following·example·test·suite·shows·some·tests·of·a·database·server:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="9569010140-1">(</span><span·class="ss">db_data_type_SUITE</span><span·class="p"·data-group-id="9569010140-1">)</span><span·class="p">.</span><span·class="w"> |
| 134 | </span><span·class="w"> | 134 | </span><span·class="w"> |
| 135 | </span><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id=" | 135 | </span><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="9569010140-2">(</span><span·class="s">"common_test/include/ct.hrl"</span><span·class="p"·data-group-id="9569010140-2">)</span><span·class="p">.</span><span·class="w"> |
| 136 | </span><span·class="c1">%%·Test·server·callbacks</span><span·class="w"> | 136 | </span><span·class="c1">%%·Test·server·callbacks</span><span·class="w"> |
| 137 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 137 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="9569010140-3">(</span><span·class="p"·data-group-id="9569010140-4">[</span><span·class="ss">suite</span><span·class="p">/</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">all</span><span·class="p">/</span><span·class="mi">0</span><span·class="p">,</span><span·class="w"> |
| 138 | ·········</span><span·class="ss">init_per_suite</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">end_per_suite</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> | 138 | ·········</span><span·class="ss">init_per_suite</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">end_per_suite</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> |
| 139 | ·········</span><span·class="ss">init_per_testcase</span><span·class="p">/</span><span·class="mi">2</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">end_per_testcase</span><span·class="p">/</span><span·class="mi">2</span><span·class="p"·data-group-id=" | 139 | ·········</span><span·class="ss">init_per_testcase</span><span·class="p">/</span><span·class="mi">2</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">end_per_testcase</span><span·class="p">/</span><span·class="mi">2</span><span·class="p"·data-group-id="9569010140-4">]</span><span·class="p"·data-group-id="9569010140-3">)</span><span·class="p">.</span><span·class="w"> |
| 140 | </span><span·class="c1">%%·Test·cases</span><span·class="w"> | 140 | </span><span·class="c1">%%·Test·cases</span><span·class="w"> |
| 141 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 141 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="9569010140-5">(</span><span·class="p"·data-group-id="9569010140-6">[</span><span·class="ss">string</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">integer</span><span·class="p">/</span[·...·truncated·by·diffoscope;·len:·120,·SHA:·e8401cfbcf28c76aeaf782eb6e03eea4d4bb1161f8b5907c388bc7fb53f4757f·...·]-5">)</span><span·class="p">.</span><span·class="w"> |
| 142 | </span><span·class="w"> | 142 | </span><span·class="w"> |
| 143 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id=" | 143 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="9569010140-7">(</span><span·class="n">CONNECT_STR</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"DSN=sqlserver;UID=alladin;PWD=sesame"</span><span·class="p"·data-group-id="9569010140-7">)</span><span·class="p">.</span><span·class="w"> |
| 144 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> | 144 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> |
| 145 | </span><span·class="c1">%%·COMMON·TEST·CALLBACK·FUNCTIONS</span><span·class="w"> | 145 | </span><span·class="c1">%%·COMMON·TEST·CALLBACK·FUNCTIONS</span><span·class="w"> |
| 146 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> | 146 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> |
| 147 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> | 147 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> |
| 148 | </span><span·class="c1">%%·Function:·suite()·->·Info</span><span·class="w"> | 148 | </span><span·class="c1">%%·Function:·suite()·->·Info</span><span·class="w"> |
| 149 | </span><span·class="c1">%%</span><span·class="w"> | 149 | </span><span·class="c1">%%</span><span·class="w"> |
| 150 | </span><span·class="c1">%%·Info·=·[tuple()]</span><span·class="w"> | 150 | </span><span·class="c1">%%·Info·=·[tuple()]</span><span·class="w"> |
| 151 | </span><span·class="c1">%%···List·of·key/value·pairs.</span><span·class="w"> | 151 | </span><span·class="c1">%%···List·of·key/value·pairs.</span><span·class="w"> |
| 152 | </span><span·class="c1">%%</span><span·class="w"> | 152 | </span><span·class="c1">%%</span><span·class="w"> |
| 153 | </span><span·class="c1">%%·Description:·Returns·list·of·tuples·to·set·default·properties</span><span·class="w"> | 153 | </span><span·class="c1">%%·Description:·Returns·list·of·tuples·to·set·default·properties</span><span·class="w"> |
| 154 | </span><span·class="c1">%%··············for·the·suite.</span><span·class="w"> | 154 | </span><span·class="c1">%%··············for·the·suite.</span><span·class="w"> |
| 155 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> | 155 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> |
| 156 | </span><span·class="nf">suite</span><span·class="p"·data-group-id=" | 156 | </span><span·class="nf">suite</span><span·class="p"·data-group-id="9569010140-8">(</span><span·class="p"·data-group-id="9569010140-8">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 157 | ····</span><span·class="p"·data-group-id=" | 157 | ····</span><span·class="p"·data-group-id="9569010140-9">[</span><span·class="p"·data-group-id="9569010140-10">{</span><span·class="ss">timetrap</span><span·class="p">,</span><span·class="p"·data-group-id="9569010140-11">{</span><span·class="ss">minutes</span><span·class="p">,</span><span·class="mi[·...·truncated·by·diffoscope;·len:·159,·SHA:·9ad994fb6f9e729ed0f248b5489d8ce4180cbddf6f08cb796575f9f895acf452·...·]-9">]</span><span·class="p">.</span><span·class="w"> |
| 158 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> | 158 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> |
| 159 | </span><span·class="c1">%%·Function:·init_per_suite(Config0)·->·Config1</span><span·class="w"> | 159 | </span><span·class="c1">%%·Function:·init_per_suite(Config0)·->·Config1</span><span·class="w"> |
| 160 | </span><span·class="c1">%%</span><span·class="w"> | 160 | </span><span·class="c1">%%</span><span·class="w"> |
| 161 | </span><span·class="c1">%%·Config0·=·Config1·=·[tuple()]</span><span·class="w"> | 161 | </span><span·class="c1">%%·Config0·=·Config1·=·[tuple()]</span><span·class="w"> |
| 162 | </span><span·class="c1">%%···A·list·of·key/value·pairs,·holding·the·test·case·configuration.</span><span·class="w"> | 162 | </span><span·class="c1">%%···A·list·of·key/value·pairs,·holding·the·test·case·configuration.</span><span·class="w"> |
| 163 | </span><span·class="c1">%%</span><span·class="w"> | 163 | </span><span·class="c1">%%</span><span·class="w"> |
| 164 | </span><span·class="c1">%%·Description:·Initialization·before·the·suite.</span><span·class="w"> | 164 | </span><span·class="c1">%%·Description:·Initialization·before·the·suite.</span><span·class="w"> |
| 165 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> | 165 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> |
| 166 | </span><span·class="nf">init_per_suite</span><span·class="p"·data-group-id=" | 166 | </span><span·class="nf">init_per_suite</span><span·class="p"·data-group-id="9569010140-12">(</span><span·class="n">Config</span><span·class="p"·data-group-id="9569010140-12">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 167 | ····</span><span·class="p"·data-group-id=" | 167 | ····</span><span·class="p"·data-group-id="9569010140-13">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ref</span><span·class="p"·data-group-id="9569010140-13">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·c[·...·truncated·by·diffoscope;·len:·383,·SHA:·3c45e3a1d788d7f488b8bc7bd8096325e4f7baae3f044f48abe8fb3f40380696·...·]-14">)</span><span·class="p">,</span><span·class="w"> |
| 168 | ····</span><span·class="n">TableName</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">db_lib</span><span·class="p">:</span><span·class="nf">unique_table_name</span><span·class="p"·data-group-id=" | 168 | ····</span><span·class="n">TableName</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">db_lib</span><span·class="p">:</span><span·class="nf">unique_table_name</span><span·class="p"·data-group-id="9569010140-16">(</span><span·class="p"·data-group-id="9569010140-16">)</span><span·class="p">,</span><span·class="w"> |
| 169 | ····</span><span·class="p"·data-group-id=" | 169 | ····</span><span·class="p"·data-group-id="9569010140-17">[</span><span·class="p"·data-group-id="9569010140-18">{</span><span·class="ss">con_ref</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ref</span><span·class="w">·</span><span·class="p"·data-group-id="9569010140-18">}</s[·...·truncated·by·diffoscope;·len:·368,·SHA:·63b6aa6c7d7668571e60dc26a659666107417dd923853d10c932b5a2e7fc0a82·...·]-17">]</span><span·class="p">.</span><span·class="w"> |
| 170 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> | 170 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> |
| 171 | </span><span·class="c1">%%·Function:·end_per_suite(Config)·->·term()</span><span·class="w"> | 171 | </span><span·class="c1">%%·Function:·end_per_suite(Config)·->·term()</span><span·class="w"> |
| 172 | </span><span·class="c1">%%</span><span·class="w"> | 172 | </span><span·class="c1">%%</span><span·class="w"> |
| 173 | </span><span·class="c1">%%·Config·=·[tuple()]</span><span·class="w"> | 173 | </span><span·class="c1">%%·Config·=·[tuple()]</span><span·class="w"> |
| 174 | </span><span·class="c1">%%···A·list·of·key/value·pairs,·holding·the·test·case·configuration.</span><span·class="w"> | 174 | </span><span·class="c1">%%···A·list·of·key/value·pairs,·holding·the·test·case·configuration.</span><span·class="w"> |
| 175 | </span><span·class="c1">%%</span><span·class="w"> | 175 | </span><span·class="c1">%%</span><span·class="w"> |
| 176 | </span><span·class="c1">%%·Description:·Cleanup·after·the·suite.</span><span·class="w"> | 176 | </span><span·class="c1">%%·Description:·Cleanup·after·the·suite.</span><span·class="w"> |
| 177 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> | 177 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> |
| 178 | </span><span·class="nf">end_per_suite</span><span·class="p"·data-group-id=" | 178 | </span><span·class="nf">end_per_suite</span><span·class="p"·data-group-id="9569010140-20">(</span><span·class="n">Config</span><span·class="p"·data-group-id="9569010140-20">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 179 | ····</span><span·class="n">Ref</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id=" | 179 | ····</span><span·class="n">Ref</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id="9569010140-21">(</span><span·class="ss">con_ref</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Config</span><span·class="p"·data-group-id="9569010140-21">)</span><span·class="p">,</span><span·class="w"> |
| 180 | ····</span><span·class="nc">db</span><span·class="p">:</span><span·class="nf">disconnect</span><span·class="p"·data-group-id=" | 180 | ····</span><span·class="nc">db</span><span·class="p">:</span><span·class="nf">disconnect</span><span·class="p"·data-group-id="9569010140-22">(</span><span·class="n">Ref</span><span·class="p"·data-group-id="9569010140-22">)</span><span·class="p">,</span><span·class="w"> |
| 181 | ····</span><span·class="ss">ok</span><span·class="p">.</span><span·class="w"> | 181 | ····</span><span·class="ss">ok</span><span·class="p">.</span><span·class="w"> |
| 182 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> | 182 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> |
| 183 | </span><span·class="c1">%%·Function:·init_per_testcase(TestCase,·Config0)·->·Config1</span><span·class="w"> | 183 | </span><span·class="c1">%%·Function:·init_per_testcase(TestCase,·Config0)·->·Config1</span><span·class="w"> |
| 184 | </span><span·class="c1">%%</span><span·class="w"> | 184 | </span><span·class="c1">%%</span><span·class="w"> |
| 185 | </span><span·class="c1">%%·TestCase·=·atom()</span><span·class="w"> | 185 | </span><span·class="c1">%%·TestCase·=·atom()</span><span·class="w"> |
| 186 | </span><span·class="c1">%%···Name·of·the·test·case·that·is·about·to·run.</span><span·class="w"> | 186 | </span><span·class="c1">%%···Name·of·the·test·case·that·is·about·to·run.</span><span·class="w"> |
| 187 | </span><span·class="c1">%%·Config0·=·Config1·=·[tuple()]</span><span·class="w"> | 187 | </span><span·class="c1">%%·Config0·=·Config1·=·[tuple()]</span><span·class="w"> |
| 188 | </span><span·class="c1">%%···A·list·of·key/value·pairs,·holding·the·test·case·configuration.</span><span·class="w"> | 188 | </span><span·class="c1">%%···A·list·of·key/value·pairs,·holding·the·test·case·configuration.</span><span·class="w"> |
| 189 | </span><span·class="c1">%%</span><span·class="w"> | 189 | </span><span·class="c1">%%</span><span·class="w"> |
| 190 | </span><span·class="c1">%%·Description:·Initialization·before·each·test·case.</span><span·class="w"> | 190 | </span><span·class="c1">%%·Description:·Initialization·before·each·test·case.</span><span·class="w"> |
| 191 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> | 191 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> |
| 192 | </span><span·class="nf">init_per_testcase</span><span·class="p"·data-group-id=" | 192 | </span><span·class="nf">init_per_testcase</span><span·class="p"·data-group-id="9569010140-23">(</span><span·class="n">Case</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Config</span><span·class="p"·data-group-id="9569010140-23">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 193 | ····</span><span·class="n">Ref</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id=" | 193 | ····</span><span·class="n">Ref</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id="9569010140-24">(</span><span·class="ss">con_ref</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Config</span><span·class="p"·data-group-id="9569010140-24">)</span><span·class="p">,</span><span·class="w"> |
| 194 | ····</span><span·class="n">TableName</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id=" | 194 | ····</span><span·class="n">TableName</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id="9569010140-25">(</span><span·class="ss">table_name</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Config</span><span·class="p"·data-group-id="9569010140-25">)</span><span·class="p">,</span><span·class="w"> |
| 195 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">db</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id=" | 195 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">db</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id="9569010140-26">(</span><span·class="n">Ref</span><span·class="p">,</span><span·class="w">·</span><span·class="n">TableName</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">table_type</span><span·class="p"·data-group-id="9569010140-27"[·...·truncated·by·diffoscope;·len:·131,·SHA:·77359dc636a2fda50276dc45d28d4c251ab43e3533129471564ed4144b661f53·...·]-26">)</span><span·class="p">,</span><span·class="w"> |
| 196 | ····</span><span·class="n">Config</span><span·class="p">.</span><span·class="w"> | 196 | ····</span><span·class="n">Config</span><span·class="p">.</span><span·class="w"> |
| 197 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> | 197 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> |
| 198 | </span><span·class="c1">%%·Function:·end_per_testcase(TestCase,·Config)·->·term()</span><span·class="w"> | 198 | </span><span·class="c1">%%·Function:·end_per_testcase(TestCase,·Config)·->·term()</span><span·class="w"> |
| 199 | </span><span·class="c1">%%</span><span·class="w"> | 199 | </span><span·class="c1">%%</span><span·class="w"> |
| 200 | </span><span·class="c1">%%·TestCase·=·atom()</span><span·class="w"> | 200 | </span><span·class="c1">%%·TestCase·=·atom()</span><span·class="w"> |
| 201 | </span><span·class="c1">%%···Name·of·the·test·case·that·is·finished.</span><span·class="w"> | 201 | </span><span·class="c1">%%···Name·of·the·test·case·that·is·finished.</span><span·class="w"> |
| 202 | </span><span·class="c1">%%·Config·=·[tuple()]</span><span·class="w"> | 202 | </span><span·class="c1">%%·Config·=·[tuple()]</span><span·class="w"> |
| 203 | </span><span·class="c1">%%···A·list·of·key/value·pairs,·holding·the·test·case·configuration.</span><span·class="w"> | 203 | </span><span·class="c1">%%···A·list·of·key/value·pairs,·holding·the·test·case·configuration.</span><span·class="w"> |
| 204 | </span><span·class="c1">%%</span><span·class="w"> | 204 | </span><span·class="c1">%%</span><span·class="w"> |
| 205 | </span><span·class="c1">%%·Description:·Cleanup·after·each·test·case.</span><span·class="w"> | 205 | </span><span·class="c1">%%·Description:·Cleanup·after·each·test·case.</span><span·class="w"> |
| 206 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> | 206 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> |
| 207 | </span><span·class="nf">end_per_testcase</span><span·class="p"·data-group-id=" | 207 | </span><span·class="nf">end_per_testcase</span><span·class="p"·data-group-id="9569010140-28">(</span><span·class="p">_</span><span·class="n">Case</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Config</span><span·class="p"·data-group-id="9569010140-28">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 208 | ····</span><span·class="n">Ref</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id=" | 208 | ····</span><span·class="n">Ref</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id="9569010140-29">(</span><span·class="ss">con_ref</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Config</span><span·class="p"·data-group-id="9569010140-29">)</span><span·class="p">,</span><span·class="w"> |
| 209 | ····</span><span·class="n">TableName</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id=" | 209 | ····</span><span·class="n">TableName</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id="9569010140-30">(</span><span·class="ss">table_name</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Config</span><span·class="p"·data-group-id="9569010140-30">)</span><span·class="p">,</span><span·class="w"> |
| 210 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">db</span><span·class="p">:</span><span·class="nf">delete_table</span><span·class="p"·data-group-id=" | 210 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">db</span><span·class="p">:</span><span·class="nf">delete_table</span><span·class="p"·data-group-id="9569010140-31">(</span><span·class="n">Ref</span><span·class="p">,</span><span·class="w">·</span><span·class="n">TableName</span><span·class="p"·data-group-id="9569010140-31">)</span><span·class="p">,</span><span·class="w"> |
| 211 | ····</span><span·class="ss">ok</span><span·class="p">.</span><span·class="w"> | 211 | ····</span><span·class="ss">ok</span><span·class="p">.</span><span·class="w"> |
| 212 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> | 212 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> |
| 213 | </span><span·class="c1">%%·Function:·all()·->·GroupsAndTestCases</span><span·class="w"> | 213 | </span><span·class="c1">%%·Function:·all()·->·GroupsAndTestCases</span><span·class="w"> |
| 214 | </span><span·class="c1">%%</span><span·class="w"> | 214 | </span><span·class="c1">%%</span><span·class="w"> |
| 215 | </span><span·class="c1">%%·GroupsAndTestCases·=·[{group,GroupName}·|·TestCase]</span><span·class="w"> | 215 | </span><span·class="c1">%%·GroupsAndTestCases·=·[{group,GroupName}·|·TestCase]</span><span·class="w"> |
| 216 | </span><span·class="c1">%%·GroupName·=·atom()</span><span·class="w"> | 216 | </span><span·class="c1">%%·GroupName·=·atom()</span><span·class="w"> |
| 217 | </span><span·class="c1">%%···Name·of·a·test·case·group.</span><span·class="w"> | 217 | </span><span·class="c1">%%···Name·of·a·test·case·group.</span><span·class="w"> |
| 218 | </span><span·class="c1">%%·TestCase·=·atom()</span><span·class="w"> | 218 | </span><span·class="c1">%%·TestCase·=·atom()</span><span·class="w"> |
| 219 | </span><span·class="c1">%%···Name·of·a·test·case.</span><span·class="w"> | 219 | </span><span·class="c1">%%···Name·of·a·test·case.</span><span·class="w"> |
| 220 | </span><span·class="c1">%%</span><span·class="w"> | 220 | </span><span·class="c1">%%</span><span·class="w"> |
| 221 | </span><span·class="c1">%%·Description:·Returns·the·list·of·groups·and·test·cases·that</span><span·class="w"> | 221 | </span><span·class="c1">%%·Description:·Returns·the·list·of·groups·and·test·cases·that</span><span·class="w"> |
| 222 | </span><span·class="c1">%%··············are·to·be·executed.</span><span·class="w"> | 222 | </span><span·class="c1">%%··············are·to·be·executed.</span><span·class="w"> |
| 223 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> | 223 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> |
| 224 | </span><span·class="nf">all</span><span·class="p"·data-group-id=" | 224 | </span><span·class="nf">all</span><span·class="p"·data-group-id="9569010140-32">(</span><span·class="p"·data-group-id="9569010140-32">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 225 | ····</span><span·class="p"·data-group-id=" | 225 | ····</span><span·class="p"·data-group-id="9569010140-33">[</span><span·class="ss">string</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">integer</span><span·class="p"·data-group-id="9569010140-33">]</span><span·class="p">.</span><span·class="w"> |
| 226 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> | 226 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> |
| 227 | </span><span·class="c1">%%·TEST·CASES</span><span·class="w"> | 227 | </span><span·class="c1">%%·TEST·CASES</span><span·class="w"> |
| 228 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> | 228 | </span><span·class="c1">%%--------------------------------------------------------------------</span><span·class="w"> |
| 229 | </span><span·class="nf">string</span><span·class="p"·data-group-id=" | 229 | </span><span·class="nf">string</span><span·class="p"·data-group-id="9569010140-34">(</span><span·class="n">Config</span><span·class="p"·data-group-id="9569010140-34">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 230 | ····</span><span·class="nf">insert_and_lookup</span><span·class="p"·data-group-id=" | 230 | ····</span><span·class="nf">insert_and_lookup</span><span·class="p"·data-group-id="9569010140-35">(</span><span·class="ss">dummy_key</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"Dummy·string"</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Config</span><span·class="p"·data-group-i[·...·truncated·by·diffoscope;·len:·13,·SHA:·aadb3d59f1c42d2d1c68ccb9f4da28be2c32c7bf05da1ca1c38cd92f7200a3bb·...·]-35">)</span><span·class="p">.</span><span·class="w"> |
| 231 | </span><span·class="nf">integer</span><span·class="p"·data-group-id=" | 231 | </span><span·class="nf">integer</span><span·class="p"·data-group-id="9569010140-36">(</span><span·class="n">Config</span><span·class="p"·data-group-id="9569010140-36">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 232 | ····</span><span·class="nf">insert_and_lookup</span><span·class="p"·data-group-id=" | 232 | ····</span><span·class="nf">insert_and_lookup</span><span·class="p"·data-group-id="9569010140-37">(</span><span·class="ss">dummy_key</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">42</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Config</span><span·class="p"·data-group-id="9569010140-37">)</span><span·class="p">.</span><span·class="w"> |
| 233 | </span><span·class="nf">insert_and_lookup</span><span·class="p"·data-group-id=" | 233 | </span><span·class="nf">insert_and_lookup</span><span·class="p"·data-group-id="9569010140-38">(</span><span·class="n">Key</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Value</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Config</span><span·class="p"·data-group-id="9569010140-38">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 234 | ····</span><span·class="n">Ref</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id=" | 234 | ····</span><span·class="n">Ref</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id="9569010140-39">(</span><span·class="ss">con_ref</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Config</span><span·class="p"·data-group-id="9569010140-39">)</span><span·class="p">,</span><span·class="w"> |
| 235 | ····</span><span·class="n">TableName</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id=" | 235 | ····</span><span·class="n">TableName</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id="9569010140-40">(</span><span·class="ss">table_name</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Config</span><span·class="p"·data-group-id="9569010140-40">)</span><span·class="p">,</span><span·class="w"> |
| 236 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">db</span><span·class="p">:</span><span·class="nf">insert</span><span·class="p"·data-group-id=" | 236 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">db</span><span·class="p">:</span><span·class="nf">insert</span><span·class="p"·data-group-id="9569010140-41">(</span><span·class="n">Ref</span><span·class="p">,</span><span·class="w">·</span><span·class="n">TableName</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Key</span><span·class="p">,</span><span·class="w">·</span><span[·...·truncated·by·diffoscope;·len:·64,·SHA:·be30cd96b7bcbf6e1867054ebeefcbcce918b704cb45ebacbacf8c006b6d6499·...·]-41">)</span><span·class="p">,</span><span·class="w"> |
| 237 | ····</span><span·class="p"·data-group-id=" | 237 | ····</span><span·class="p"·data-group-id="9569010140-42">[</span><span·class="n">Value</span><span·class="p"·data-group-id="9569010140-42">]</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">db</span><span·class="p">:</span><span·class="nf">lookup</span[·...·truncated·by·diffoscope;·len:·276,·SHA:·61c56ab1109c52d3a058de0b84ec561dbafc712e252436c1883f26c33c6b04f9·...·]-43">)</span><span·class="p">,</span><span·class="w"> |
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| 165 | ··</a> | 165 | ··</a> |
| 166 | ··<span·class="text">A·Simple·Test·Suite</span> | 166 | ··<span·class="text">A·Simple·Test·Suite</span> |
| 167 | </h2> | 167 | </h2> |
| 168 | <p>As·shown·in·section·<a·href="basics_chapter.html#External_Interfaces">Common·Test·Basics</a>, | 168 | <p>As·shown·in·section·<a·href="basics_chapter.html#External_Interfaces">Common·Test·Basics</a>, |
| 169 | the·test·suite·module·implements·<a·href="ct_suite.html">callback·functions</a>·(mandatory | 169 | the·test·suite·module·implements·<a·href="ct_suite.html">callback·functions</a>·(mandatory |
| 170 | or·optional)·for·various·purposes,·for·example:</p><ul><li>Init/end·configuration·function·for·the·test·suite</li><li>Init/end·configuration·function·for·a·test·case</li><li>Init/end·configuration·function·for·a·test·case·group</li><li>Test·cases</li></ul><p>The·configuration·functions·are·optional.·The·following·example·is·a·test·suite | 170 | or·optional)·for·various·purposes,·for·example:</p><ul><li>Init/end·configuration·function·for·the·test·suite</li><li>Init/end·configuration·function·for·a·test·case</li><li>Init/end·configuration·function·for·a·test·case·group</li><li>Test·cases</li></ul><p>The·configuration·functions·are·optional.·The·following·example·is·a·test·suite |
| 171 | without·configuration·functions,·including·one·simple·test·case,·to·check·that | 171 | without·configuration·functions,·including·one·simple·test·case,·to·check·that |
| 172 | module·<code·class="inline">mymod</code>·exists·(that·is,·can·be·successfully·loaded·by·the·code·server):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 172 | module·<code·class="inline">mymod</code>·exists·(that·is,·can·be·successfully·loaded·by·the·code·server):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="0735386098-1">(</span><span·class="ss">my1st_SUITE</span><span·class="p"·data-group-id="0735386098-1">)</span><span·class="p">.</span><span·class="w"> |
| 173 | </span><span·class="p">-</span><span·class="na">compile</span><span·class="p"·data-group-id=" | 173 | </span><span·class="p">-</span><span·class="na">compile</span><span·class="p"·data-group-id="0735386098-2">(</span><span·class="ss">export_all</span><span·class="p"·data-group-id="0735386098-2">)</span><span·class="p">.</span><span·class="w"> |
| 174 | </span><span·class="nf">all</span><span·class="p"·data-group-id=" | 174 | </span><span·class="nf">all</span><span·class="p"·data-group-id="0735386098-3">(</span><span·class="p"·data-group-id="0735386098-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 175 | ····</span><span·class="p"·data-group-id=" | 175 | ····</span><span·class="p"·data-group-id="0735386098-4">[</span><span·class="ss">mod_exists</span><span·class="p"·data-group-id="0735386098-4">]</span><span·class="p">.</span><span·class="w"> |
| 176 | </span><span·class="nf">mod_exists</span><span·class="p"·data-group-id=" | 176 | </span><span·class="nf">mod_exists</span><span·class="p"·data-group-id="0735386098-5">(</span><span·class="p">_</span><span·class="p"·data-group-id="0735386098-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 177 | ····</span><span·class="p"·data-group-id=" | 177 | ····</span><span·class="p"·data-group-id="0735386098-6">{</span><span·class="ss">module</span><span·class="p">,</span><span·class="ss">mymod</span><span·class="p"·data-group-id="0735386098-6">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">code</spa[·...·truncated·by·diffoscope;·len:·182,·SHA:·8b4bc2cde61138921202be9b9497060449ed7224f3c40143d630cdedbbcd850e·...·]-7">)</span><span·class="p">.</span></code></pre><p>If·the·operation·fails,·a·bad·match·error·occurs·that·terminates·the·test·case.</p><h2·id="a-test-suite-with-configuration-functions"·class="section-heading"> |
| 178 | ··<a·href="#a-test-suite-with-configuration-functions"·class="hover-link"> | 178 | ··<a·href="#a-test-suite-with-configuration-functions"·class="hover-link"> |
| 179 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 179 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 180 | ··</a> | 180 | ··</a> |
| 181 | ··<span·class="text">A·Test·Suite·with·Configuration·Functions</span> | 181 | ··<span·class="text">A·Test·Suite·with·Configuration·Functions</span> |
| 182 | </h2> | 182 | </h2> |
| 183 | <p>If·you·need·to·perform·configuration·operations·to·run·your·test,·you·can | 183 | <p>If·you·need·to·perform·configuration·operations·to·run·your·test,·you·can |
| 184 | implement·configuration·functions·in·your·suite.·The·result·from·a·configuration | 184 | implement·configuration·functions·in·your·suite.·The·result·from·a·configuration |
| 185 | function·is·configuration·data,·or·<code·class="inline">Config</code>.·This·is·a·list·of·key-value·tuples | 185 | function·is·configuration·data,·or·<code·class="inline">Config</code>.·This·is·a·list·of·key-value·tuples |
| 186 | that·get·passed·from·the·configuration·function·to·the·test·cases·(possibly | 186 | that·get·passed·from·the·configuration·function·to·the·test·cases·(possibly |
| 187 | through·configuration·functions·on·"lower·level").·The·data·flow·looks·as | 187 | through·configuration·functions·on·"lower·level").·The·data·flow·looks·as |
| 188 | follows:</p><p><img·src="assets/config.gif"·alt="Configuration·Data·Flow·in·a·Suite"·title="Configuration·Data·Flow·in·a·Suite"/></p><p>The·following·example·shows·a·test·suite·that·uses·configuration·functions·to | 188 | follows:</p><p><img·src="assets/config.gif"·alt="Configuration·Data·Flow·in·a·Suite"·title="Configuration·Data·Flow·in·a·Suite"/></p><p>The·following·example·shows·a·test·suite·that·uses·configuration·functions·to |
| 189 | open·and·close·a·log·file·for·the·test·cases·(an·operation·that·is·unnecessary | 189 | open·and·close·a·log·file·for·the·test·cases·(an·operation·that·is·unnecessary |
| 190 | and·irrelevant·to·perform·by·each·test·case):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="0 | 190 | and·irrelevant·to·perform·by·each·test·case):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="8094954422-1">(</span><span·class="ss">check_log_SUITE</span><span·class="p"·data-group-id="8094954422-1">)</span><span·class="p">.</span><span·class="w"> |
| 191 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="0 | 191 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="8094954422-2">(</span><span·class="p"·data-group-id="8094954422-3">[</span><span·class="ss">all</span><span·class="p">/</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">init_per_suite</span><span·class="p">/</[·...·truncated·by·diffoscope;·len:·258,·SHA:·aad62a72e7c06b6d1808ec4d7d9cce76fe9e12a17e749832f1c1a221a805b86f·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 192 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="0 | 192 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="8094954422-4">(</span><span·class="p"·data-group-id="8094954422-5">[</span><span·class="ss">check_restart_result</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">check_no_errors</span><[·...·truncated·by·diffoscope;·len:·142,·SHA:·d269a294c8aaa869fca9bc83ac21976d6ae1976b707c481818813f55a3066545·...·]-4">)</span><span·class="p">.</span><span·class="w"> |
| 193 | </span><span·class="w"> | 193 | </span><span·class="w"> |
| 194 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="0 | 194 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="8094954422-6">(</span><span·class="nf">value</span><span·class="p"·data-group-id="8094954422-7">(</span><span·class="n">Key</span><span·class="p">,</span><span·class="n">Config</span><span·class="p"·data-group-id="8094954422-7">)</span><span·class="p">,</s[·...·truncated·by·diffoscope;·len:·344,·SHA:·c560b053dd285afdc2697871859eba257bc6a49c42e32c81fd9a60e6ffcb7dbe·...·]-6">)</span><span·class="p">.</span><span·class="w"> |
| 195 | </span><span·class="nf">all</span><span·class="p"·data-group-id="0 | 195 | </span><span·class="nf">all</span><span·class="p"·data-group-id="8094954422-9">(</span><span·class="p"·data-group-id="8094954422-9">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="8094954422-10">[</span><span·class="ss">check_restart_result</span><span·c[·...·truncated·by·diffoscope;·len:·121,·SHA:·b9e1a34dd990166df5c8f64b723f06e6732a1e1f0e95f726e9da1bf6b59fbc3a·...·]-10">]</span><span·class="p">.</span><span·class="w"> |
| 196 | </span><span·class="nf">init_per_suite</span><span·class="p"·data-group-id="0 | 196 | </span><span·class="nf">init_per_suite</span><span·class="p"·data-group-id="8094954422-11">(</span><span·class="n">InitConfigData</span><span·class="p"·data-group-id="8094954422-11">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 197 | ····</span><span·class="p"·data-group-id="0 | 197 | ····</span><span·class="p"·data-group-id="8094954422-12">[</span><span·class="p"·data-group-id="8094954422-13">{</span><span·class="ss">logref</span><span·class="p">,</span><span·class="nf">open_log</span><span·class="p"·data-group-id="8094954422-14">(</span><span·class="p"·data-group-id="80949544[·...·truncated·by·diffoscope;·len:·219,·SHA:·3cc2a0c6e395ce61c31c073b737f1305edccc04ac460e388406d67d367516460·...·]-12">]</span><span·class="p">.</span><span·class="w"> |
| 198 | </span><span·class="nf">end_per_suite</span><span·class="p"·data-group-id="0 | 198 | </span><span·class="nf">end_per_suite</span><span·class="p"·data-group-id="8094954422-15">(</span><span·class="n">ConfigData</span><span·class="p"·data-group-id="8094954422-15">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 199 | ····</span><span·class="nf">close_log</span><span·class="p"·data-group-id="0 | 199 | ····</span><span·class="nf">close_log</span><span·class="p"·data-group-id="8094954422-16">(</span><span·class="o">?</span><span·class="nf">value</span><span·class="p"·data-group-id="8094954422-17">(</span><span·class="ss">logref</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ConfigData</span><span·class="p"[·...·truncated·by·diffoscope;·len:·80,·SHA:·4aea6c301349981f3a2fd4781d47dd10b8fa3a0a130f1aa30a53d7cf68e440db·...·]-16">)</span><span·class="p">.</span><span·class="w"> |
| 200 | </span><span·class="nf">check_restart_result</span><span·class="p"·data-group-id="0 | 200 | </span><span·class="nf">check_restart_result</span><span·class="p"·data-group-id="8094954422-18">(</span><span·class="n">ConfigData</span><span·class="p"·data-group-id="8094954422-18">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 201 | ····</span><span·class="n">TestData</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">read_log</span><span·class="p"·data-group-id="0 | 201 | ····</span><span·class="n">TestData</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">read_log</span><span·class="p"·data-group-id="8094954422-19">(</span><span·class="ss">restart</span><span·class="p">,</span><span·class="w">·</span><span·class="o">?</span><span·class="nf">value</span><span·class="p"·data-group-id="8094954422-20">(</span><span·class="ss">logref</span><span·class="p">,[·...·truncated·by·diffoscope;·len:·159,·SHA:·b0c9e6c844e341cf258e30102d3388c34d93dc035a29769b643f57dd66d38df8·...·]-19">)</span><span·class="p">,</span><span·class="w"> |
| 202 | ····</span><span·class="p"·data-group-id="0 | 202 | ····</span><span·class="p"·data-group-id="8094954422-21">{</span><span·class="ss">match</span><span·class="p">,</span><span·class="p">_</span><span·class="n">Line</span><span·class="p"·data-group-id="8094954422-21">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><sp[·...·truncated·by·diffoscope;·len:·258,·SHA:·4b12447d99480b3cd2a48d7be8a42bdc3bee2858e08bc13709f10d122694beed·...·]-22">)</span><span·class="p">.</span><span·class="w"> |
| 203 | </span><span·class="nf">check_no_errors</span><span·class="p"·data-group-id="0 | 203 | </span><span·class="nf">check_no_errors</span><span·class="p"·data-group-id="8094954422-23">(</span><span·class="n">ConfigData</span><span·class="p"·data-group-id="8094954422-23">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 204 | ····</span><span·class="n">TestData</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">read_log</span><span·class="p"·data-group-id="0 | 204 | ····</span><span·class="n">TestData</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">read_log</span><span·class="p"·data-group-id="8094954422-24">(</span><span·class="ss">all</span><span·class="p">,</span><span·class="w">·</span><span·class="o">?</span><span·class="nf">value</span><span·class="p"·data-group-id="8094954422-25">(</span><span·class="ss">logref</span><span·class="p">,</sp[·...·truncated·by·diffoscope;·len:·155,·SHA:·e130183c9eb05de03d76a64339e8e19125788bf3c5c54c314a86cdf004608216·...·]-24">)</span><span·class="p">,</span><span·class="w"> |
| 205 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">search_for</span><span·class="p"·data-group-id="0 | 205 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">search_for</span><span·class="p"·data-group-id="8094954422-26">(</span><span·class="s">"error"</span><span·class="p">,</span><span·class="w">·</span><span·class="n">TestData</span><span·class="p"·data-group-id="8094954422-26">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 206 | ········</span><span·class="p"·data-group-id="0 | 206 | ········</span><span·class="p"·data-group-id="8094954422-27">{</span><span·class="ss">match</span><span·class="p">,</span><span·class="n">Line</span><span·class="p"·data-group-id="8094954422-27">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nc">ct</sp[·...·truncated·by·diffoscope;·len:·351,·SHA:·1269fca187d12dc6900bb334af4cbe47c0c157857968b2a2c65677b6377dbbe7·...·]-28">)</span><span·class="p">;</span><span·class="w"> |
| 207 | ········</span><span·class="ss">nomatch</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="w"> | 207 | ········</span><span·class="ss">nomatch</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="w"> |
| 208 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>The·test·cases·verify,·by·parsing·a·log·file,·that·our·SUT·has·performed·a | 208 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>The·test·cases·verify,·by·parsing·a·log·file,·that·our·SUT·has·performed·a |
| 209 | successful·restart·and·that·no·unexpected·errors·are·printed.</p><p>To·execute·the·test·cases·in·the·recent·test·suite,·type·the·following·on·the | 209 | successful·restart·and·that·no·unexpected·errors·are·printed.</p><p>To·execute·the·test·cases·in·the·recent·test·suite,·type·the·following·on·the |
| 210 | UNIX/Linux·command·line·(assuming·that·the·suite·module·is·in·the·current | 210 | UNIX/Linux·command·line·(assuming·that·the·suite·module·is·in·the·current |
| 211 | working·directory):</p><pre><code·class="text">$·ct_run·-dir·.</code></pre><p>or:</p><pre><code·class="text">$·ct_run·-suite·check_log_SUITE</code></pre><p>To·use·the·Erlang·shell·to·run·our·test,·you·can·evaluate·the·following·call:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">run_test</span><span·class="p"·data-group-id=" | 211 | working·directory):</p><pre><code·class="text">$·ct_run·-dir·.</code></pre><p>or:</p><pre><code·class="text">$·ct_run·-suite·check_log_SUITE</code></pre><p>To·use·the·Erlang·shell·to·run·our·test,·you·can·evaluate·the·following·call:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">run_test</span><span·class="p"·data-group-id="2471156175-1">(</span><span·class="p"·data-group-id="2471156175-2">[</span><span·class="p"·data-group-id="2471156175-3">{</span><span·class="ss">dir</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"."</span><span·class="p"·d[·...·truncated·by·diffoscope;·len:·795,·SHA:·490ed0a2e19d627daa523779a07fce18f14440f4d532f267ad78f126ba719b3d·...·]-1">)</span><span·class="p">.</span></code></pre><p>The·result·from·running·the·test·is·printed·in·log·files·in·HTML·format·(stored |
| 212 | in·unique·log·directories·on·a·different·level).·The·following·illustration | 212 | in·unique·log·directories·on·a·different·level).·The·following·illustration |
| 213 | shows·the·log·file·structure:</p><p><img·src="assets/html_logs.gif"·alt="HTML·Log·File·Structure"·title="HTML·Log·File·Structure"/></p><h2·id="questions-and-answers"·class="section-heading"> | 213 | shows·the·log·file·structure:</p><p><img·src="assets/html_logs.gif"·alt="HTML·Log·File·Structure"·title="HTML·Log·File·Structure"/></p><h2·id="questions-and-answers"·class="section-heading"> |
| 214 | ··<a·href="#questions-and-answers"·class="hover-link"> | 214 | ··<a·href="#questions-and-answers"·class="hover-link"> |
| 215 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 215 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 216 | ··</a> | 216 | ··</a> |
| 217 | ··<span·class="text">Questions·and·Answers</span> | 217 | ··<span·class="text">Questions·and·Answers</span> |
| 218 | </h2> | 218 | </h2> |
| Offset 275, 15 lines modified | Offset 275, 15 lines modified | ||
| 275 | ··<a·href="#test-case-group-execution"·class="hover-link"> | 275 | ··<a·href="#test-case-group-execution"·class="hover-link"> |
| 276 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 276 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 277 | ··</a> | 277 | ··</a> |
| 278 | ··<span·class="text">Test·Case·Group·Execution</span> | 278 | ··<span·class="text">Test·Case·Group·Execution</span> |
| 279 | </h2> | 279 | </h2> |
| 280 | <p>With·the·<code·class="inline">ct_run</code>·flag,·or·<a·href="ct.html#run_test/1"><code·class="inline">ct:run_test/1</code></a>·option·<code·class="inline">group</code>,·one·or·more·test·case | 280 | <p>With·the·<code·class="inline">ct_run</code>·flag,·or·<a·href="ct.html#run_test/1"><code·class="inline">ct:run_test/1</code></a>·option·<code·class="inline">group</code>,·one·or·more·test·case |
| 281 | groups·can·be·specified,·optionally·in·combination·with·specific·test·cases.·The | 281 | groups·can·be·specified,·optionally·in·combination·with·specific·test·cases.·The |
| 282 | syntax·for·specifying·groups·on·the·command·line·is·as·follows:</p><pre><code·class="text">$·ct_run·-group·<group_names_or_paths>·[-case·<cases>]</code></pre><p>The·syntax·in·the·Erlang·shell·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">run_test</span><span·class="p"·data-group-id=" | 282 | syntax·for·specifying·groups·on·the·command·line·is·as·follows:</p><pre><code·class="text">$·ct_run·-group·<group_names_or_paths>·[-case·<cases>]</code></pre><p>The·syntax·in·the·Erlang·shell·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">run_test</span><span·class="p"·data-group-id="4761055769-1">(</span><span·class="p"·data-group-id="4761055769-2">[</span><span·class="p"·data-group-id="4761055769-3">{</span><span·class="ss">group</span><span·class="p">,</span><span·class="n">GroupsNamesOrPaths</span><span·class="p"·data-group-id="476[·...·truncated·by·diffoscope;·len:·346,·SHA:·14a8634596e0dea1ad05836d75ec6a93b8adfc1f27e135cd52c518f1b46d7fae·...·]-1">)</span><span·class="p">.</span></code></pre><p>Parameter·<code·class="inline">group_names_or_paths</code>·specifies·one·or·more·group·names·and/or·one·or |
| 283 | more·group·paths.·At·startup,·<code·class="inline">Common·Test</code>·searches·for·matching·groups·in·the | 283 | more·group·paths.·At·startup,·<code·class="inline">Common·Test</code>·searches·for·matching·groups·in·the |
| 284 | group·definitions·tree·(that·is,·the·list·returned·from·<code·class="inline">Suite:groups/0</code>;·for | 284 | group·definitions·tree·(that·is,·the·list·returned·from·<code·class="inline">Suite:groups/0</code>;·for |
| 285 | details,·see·section·<a·href="write_test_chapter.html#test_case_groups">Test·Case·Groups</a>.</p><p>Given·a·group·name,·say·<code·class="inline">g</code>,·<code·class="inline">Common·Test</code>·searches·for·all·paths·leading·to | 285 | details,·see·section·<a·href="write_test_chapter.html#test_case_groups">Test·Case·Groups</a>.</p><p>Given·a·group·name,·say·<code·class="inline">g</code>,·<code·class="inline">Common·Test</code>·searches·for·all·paths·leading·to |
| 286 | <code·class="inline">g</code>.·By·path·is·meant·a·sequence·of·nested·groups,·which·must·be·followed·to·get | 286 | <code·class="inline">g</code>.·By·path·is·meant·a·sequence·of·nested·groups,·which·must·be·followed·to·get |
| 287 | from·the·top-level·group·to·<code·class="inline">g</code>.·To·execute·the·test·cases·in·group·<code·class="inline">g</code>, | 287 | from·the·top-level·group·to·<code·class="inline">g</code>.·To·execute·the·test·cases·in·group·<code·class="inline">g</code>, |
| 288 | <code·class="inline">Common·Test</code>·must·call·the·<code·class="inline">init_per_group/2</code>·function·for·each·group·in·the | 288 | <code·class="inline">Common·Test</code>·must·call·the·<code·class="inline">init_per_group/2</code>·function·for·each·group·in·the |
| 289 | path·to·<code·class="inline">g</code>,·and·all·corresponding·<code·class="inline">end_per_group/2</code>·functions·afterwards.·This | 289 | path·to·<code·class="inline">g</code>,·and·all·corresponding·<code·class="inline">end_per_group/2</code>·functions·afterwards.·This |
| Offset 307, 38 lines modified | Offset 307, 38 lines modified | ||
| 307 | all·<code·class="inline">init</code>·configuration·functions·in·the·path·to·<code·class="inline">g4</code>,·that·is,·<code·class="inline">g1..g3..g4</code>. | 307 | all·<code·class="inline">init</code>·configuration·functions·in·the·path·to·<code·class="inline">g4</code>,·that·is,·<code·class="inline">g1..g3..g4</code>. |
| 308 | It·then·calls·test·cases·<code·class="inline">tc1</code>·and·<code·class="inline">tc5</code>·in·<code·class="inline">g4</code>,·and·finally·all·<code·class="inline">end</code> | 308 | It·then·calls·test·cases·<code·class="inline">tc1</code>·and·<code·class="inline">tc5</code>·in·<code·class="inline">g4</code>,·and·finally·all·<code·class="inline">end</code> |
| 309 | configuration·functions·in·order·<code·class="inline">g4..g3..g1</code>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>The·group·path·specification·does·not·necessarily·have·to·include·<em>all</em>·groups | 309 | configuration·functions·in·order·<code·class="inline">g4..g3..g1</code>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>The·group·path·specification·does·not·necessarily·have·to·include·<em>all</em>·groups |
| 310 | in·the·path·to·the·terminating·group.·<code·class="inline">Common·Test</code>·searches·for·all·matching | 310 | in·the·path·to·the·terminating·group.·<code·class="inline">Common·Test</code>·searches·for·all·matching |
| 311 | paths·if·an·incomplete·group·path·is·specified.</p></section><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Group·names·and·group·paths·can·be·combined·with·parameter | 311 | paths·if·an·incomplete·group·path·is·specified.</p></section><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Group·names·and·group·paths·can·be·combined·with·parameter |
| 312 | <code·class="inline">group_names_or_paths</code>.·Each·element·is·treated·as·an·individual·specification | 312 | <code·class="inline">group_names_or_paths</code>.·Each·element·is·treated·as·an·individual·specification |
| 313 | in·combination·with·parameter·<code·class="inline">cases</code>.·The·following·examples·illustrates | 313 | in·combination·with·parameter·<code·class="inline">cases</code>.·The·following·examples·illustrates |
| 314 | this.</p></section><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 314 | this.</p></section><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="5675628512-1">(</span><span·class="ss">x_SUITE</span><span·class="p"·data-group-id="5675628512-1">)</span><span·class="p">.</span><span·class="w"> |
| 315 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 315 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 316 | </span><span·class="c1">%%·The·group·definitions:</span><span·class="w"> | 316 | </span><span·class="c1">%%·The·group·definitions:</span><span·class="w"> |
| 317 | </span><span·class="nf">groups</span><span·class="p"·data-group-id=" | 317 | </span><span·class="nf">groups</span><span·class="p"·data-group-id="5675628512-2">(</span><span·class="p"·data-group-id="5675628512-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 318 | ··</span><span·class="p"·data-group-id=" | 318 | ··</span><span·class="p"·data-group-id="5675628512-3">[</span><span·class="p"·data-group-id="5675628512-4">{</span><span·class="ss">top1</span><span·class="p">,</span><span·class="p"·data-group-id="5675628512-5">[</span><span·class="p"·data-group-id="5675628512-5">]</span><span·class="p">,</span[·...·truncated·by·diffoscope;·len:·42,·SHA:·489e0d6a194a9ad5e342291ca83222a2c6a607a8fb43656a9ef9cd3812f77374·...·]-6">[</span><span·class="ss">tc11</span><span·class="p">,</span><span·class="ss">tc12</span><span·class="p">,</span><span·class="w"> |
| 319 | ·············</span><span·class="p"·data-group-id=" | 319 | ·············</span><span·class="p"·data-group-id="5675628512-7">{</span><span·class="ss">sub11</span><span·class="p">,</span><span·class="p"·data-group-id="5675628512-8">[</span><span·class="p"·data-group-id="5675628512-8">]</span><span·class="p">,</span><span·class="p"·data-group-id="5675628512-9">[</spa[·...·truncated·by·diffoscope;·len:·176,·SHA:·2e72e23ea73194ca7f9b9a195bd607c5714772c1dce77ea0ea54d7960f063a56·...·]-7">}</span><span·class="p">,</span><span·class="w"> |
| 320 | ·············</span><span·class="p"·data-group-id=" | 320 | ·············</span><span·class="p"·data-group-id="5675628512-10">{</span><span·class="ss">sub12</span><span·class="p">,</span><span·class="p"·data-group-id="5675628512-11">[</span><span·class="p"·data-group-id="5675628512-11">]</span><span·class="p">,</span><span·class="p"·data-group-id="5675628512-12">[</span><span·class="ss">tc14</span><span·class="p">,</span><span·class="ss">tc15</span><span·class="p">,</span><span·class="w"> |
| 321 | ·······» » ·</span><span·class="p"·data-group-id=" | 321 | ·······» » ·</span><span·class="p"·data-group-id="5675628512-13">{</span><span·class="ss">sub121</span><span·class="p">,</span><span·class="p"·data-group-id="5675628512-14">[</span><span·class="p"·data-group-id="5675628512-14">]</span><span·class="p">,</span><span·class="p"·data-group-id="5675628512-15">[[·...·truncated·by·diffoscope;·len:·397,·SHA:·f60b38d73bab02e223a29f80fcf5c88bedc48a62a82d2cdc09e9f4179e8c31f0·...·]-4">}</span><span·class="p">,</span><span·class="w"> |
| 322 | ···</span><span·class="p"·data-group-id="1819914126-16">{</span><span·class="ss">top2</span><span·class="p">,</span><span·class="p"·data-group-id="1819914126-17">[</span><span·class="p"·data-group-id="1819914126-17">]</span><span·class="p">,</span><span·class="p"·data-group-id="1819914126-18">[</span><span·class="p"·data-group-id="1819914126-19">{</span><span·class="ss">group</span><span·class="p">,</span><span·class="ss">sub21</span><span·class="p"·data-group-id="1819914126-19">}</span><span·class="p">,</span><span·class="p"·data-group-id="1819914126-20">{</span><span·class="ss">group</span><span·class="p">,</span><span·class="ss">sub22</span><span·class="p"·data-group-id="1819914126-20">}</span><span·class="p"·data-group-id="1819914126-18">]</span><span·class="p"·data-group-id="1819914126-16">}</span><span·class="p">,</span><span·class="w"> | ||
| 323 | ···</span><span·class="p"·data-group-id="1819914126-21">{</span><span·class="ss">sub21</span><span·class="p">,</span><span·class="p"·data-group-id="1819914126-22">[</span><span·class="p"·data-group-id="1819914126-22">]</span><span·class="p">,</span><span·class="p"·data-group-id="1819914126-23">[</span><span·class="ss">tc21</span><span·class="p">,</span><span·class="p"·data-group-id="1819914126-24">{</span><span·class="ss">group</span><span·class="p">,</span><span·class="ss">sub2X2</span><span·class="p"·data-group-id="1819914126-24">}</span><span·class="p"·data-group-id="1819914126-23">]</span><span·class="p"·data-group-id="1819914126-21">}</span><span·class="p">,</span><span·class="w"> | ||
| 324 | ···</span><span·class="p"·data-group-id=" | 322 | ···</span><span·class="p"·data-group-id="5675628512-16">{</span><span·class="ss">top2</span><span·class="p">,</span><span·class="p"·data-group-id="5675628512-17">[</span><span·class="p"·data-group-id="5675628512-17">]</span><span·class="p">,</span><span·class="p"·data-group-id="5675628512-18">[</[·...·truncated·by·diffoscope;·len:·507,·SHA:·0ac4a20d6f395304ee7331a97dc9a9e5f8c4b5a422fed508ac8924be7184f13e·...·]">}</span><span·class="p">,</span><span·class="w"> |
| 323 | ···</span><span·class="p"·data-group-id="5675628512-21">{</span><span·class="ss">sub21</span><span·class="p">,</span><span·class="p"·data-group-id="5675628512-22">[</span><span·class="p"·data-group-id="5675628512-22">]</span><span·class="p">,</span><span·class="p"·data-group-id="5675628512-23">[</span><span·class="ss">tc21</span><span·class="p">,</span><span·class="p"·data-group-id="5675628512-24">{</span><span·class="ss">group</span><span·class="p">,</span><span·class="ss">sub2X2</span><span·class="p"·data-group-id="5675628512-24">}</span><span·class="p"·data-group-id="5675628512-23">]</span><span·class="p"·data-group-id="5675628512-21">}</span><span·class="p">,</span><span·class="w"> | ||
| 324 | ···</span><span·class="p"·data-group-id="5675628512-25">{</span><span·class="ss">sub22</span><span·class="p">,</span><span·class="p"·data-group-id="5675628512-26">[</span><span·class="p"·data-group-id="5675628512-26">]</span><span·class="p">,</span><span·class="p"·data-group-id="5675628512-27">[</span><span·class="p"·data-group-id="5675628512-28">{</span><span·class="ss">group</span><span·class="p">,</span><span·class="ss">sub221</span><span·class="p"·data-group-id="5675628512-28">}</span><span·class="p">,</span><span·class="ss">tc21</span><span·class="p">,</span><span·class="ss">tc22</span><span·class="p">,</span><span·class="p"·data-group-id="5675628512-29">{</span><span·class="ss">group</span><span·class="p">,</span><span·class="ss">sub2X2</span><span·class="p"·data-group-id="5675628512-29">}</span><span·class="p"·data-group-id="5675628512-27">]</span><span·class="p"·data-group-id="5675628512-25">}</span><span·class="p">,</span><span·class="w"> | ||
| 325 | ···</span><span·class="p"·data-group-id=" | 325 | ···</span><span·class="p"·data-group-id="5675628512-30">{</span><span·class="ss">sub221</span><span·class="p">,</span><span·class="p"·data-group-id="5675628512-31">[</span><span·class="p"·data-group-id="5675628512-31">]</span><span·class="p">,</span><span·class="p"·data-group-id="5675628512-32">[[·...·truncated·by·diffoscope;·len:·182,·SHA:·09d85d32071d15d6316c28d8675cf6eeb1f751c43f03bc6dd00dc1ccbf7d3bf7·...·]-30">}</span><span·class="p">,</span><span·class="w"> |
| 326 | ···</span><span·class="p"·data-group-id=" | 326 | ···</span><span·class="p"·data-group-id="5675628512-33">{</span><span·class="ss">sub2X2</span><span·class="p">,</span><span·class="p"·data-group-id="5675628512-34">[</span><span·class="p"·data-group-id="5675628512-34">]</span><span·class="p">,</span><span·class="p"·data-group-id="5675628512-35">[[·...·truncated·by·diffoscope;·len:·236,·SHA:·9a3186737d7c3e4e51f66aedfbe22165f9937155beb6df43c5ba880d0d040012·...·]-3">]</span><span·class="p">.</span></code></pre><p>The·following·executes·two·tests,·one·for·all·cases·and·all·subgroups·under |
| 327 | <code·class="inline">top1</code>,·and·one·for·all·under·<code·class="inline">top2</code>:</p><pre><code·class="text">$·ct_run·-suite·"x_SUITE"·-group·all</code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">run_test</span><span·class="p"·data-group-id=" | 327 | <code·class="inline">top1</code>,·and·one·for·all·under·<code·class="inline">top2</code>:</p><pre><code·class="text">$·ct_run·-suite·"x_SUITE"·-group·all</code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">run_test</span><span·class="p"·data-group-id="4266202532-1">(</span><span·class="p"·data-group-id="4266202532-2">[</span><span·class="p"·data-group-id="4266202532-3">{</span><span·class="ss">suite</span><span·class="p">,</span><span·class="s">"x_SUITE"</span><span·class="p"·data-group-id="42[·...·truncated·by·diffoscope;·len:·1634,·SHA:·33f31251ea86c6d555a95030e4bcbae403a3be0905c92df2102c7fdbb72cc101·...·]-1">)</span><span·class="p">.</span></code></pre><p>The·following·runs·a·test·executing·<code·class="inline">tc12</code>·in·<code·class="inline">top1</code>·and·any·subgroup·under |
| 328 | <code·class="inline">top1</code>·where·it·can·be·found·(<code·class="inline">sub11</code>·and·<code·class="inline">sub121</code>):</p><pre><code·class="text">$·ct_run·-suite·"x_SUITE"·-group·top1·-case·tc12</code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">run_test</span><span·class="p"·data-group-id="8964648191-1">(</span><span·class="p"·data-group-id="8964648191-2">[</span><span·class="p"·data-group-id="8964648191-3">{</span><span·class="ss">suite</span><span·class="p">,</span><span·class="s">"x_SUITE"</span><span·class="p"·data-group-id="8964648191-3">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8964648191-4">{</span><span·class="ss">group</span><span·class="p">,</span><span·class="p"·data-group-id="8964648191-5">[</span><span·class="ss">top1</span><span·class="p"·data-group-id="8964648191-5">]</span><span·class="p"·data-group-id="8964648191-4">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8964648191-6">{</span><span·class="ss">testcase</span><span·class="p">,</span><span·class="p"·data-group-id="8964648191-7">[</span><span·class="ss">tc12</span><span·class="p"·data-group-id="8964648191-7">]</span><span·class="p"·data-group-id="8964648191-6">}</span><span·class="p"·data-group-id="8964648191-2">]</span><span·class="p"·data-group-id="8964648191-1">)</span><span·class="p">.</span></code></pre><p>The·following·executes·<code·class="inline">tc12</code>·<em>only</em>·in·group·<code·class="inline">top1</code>:</p><pre><code·class="text">$·ct_run·-suite·"x_SUITE"·-group·[top1]·-case·tc12</code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">run_test</span><span·class="p"·data-group-id="6047279698-1">(</span><span·class="p"·data-group-id="6047279698-2">[</span><span·class="p"·data-group-id="6047279698-3">{</span><span·class="ss">suite</span><span·class="p">,</span><span·class="s">"x_SUITE"</span><span·class="p"·data-group-id="6047279698-3">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6047279698-4">{</span><span·class="ss">group</span><span·class="p">,</span><span·class="p"·data-group-id="6047279698-5">[</span><span·class="p"·data-group-id="6047279698-6">[</span><span·class="ss">top1</span><span·class="p"·data-group-id="6047279698-6">]</span><span·class="p"·data-group-id="6047279698-5">]</span><span·class="p"·data-group-id="6047279698-4">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6047279698-7">{</span><span·class="ss">testcase</span><span·class="p">,</span><span·class="p"·data-group-id="6047279698-8">[</span><span·class="ss">tc12</span><span·class="p"·data-group-id="6047279698-8">]</span><span·class="p"·data-group-id="6047279698-7">}</span><span·class="p"·data-group-id="6047279698-2">]</span><span·class="p"·data-group-id="6047279698-1">)</span><span·class="p">.</span></code></pre><p>The·following·searches·<code·class="inline">top1</code>·and·all·its·subgroups·for·<code·class="inline">tc16</code>·resulting·in·that | ||
| 329 | t | 328 | <code·class="inline">top1</code>·where·it·can·be·found·(<code·class="inline">sub11</code>·and·<code·class="inline">sub121</code>):</p><pre><code·class="text">$·ct_run·-suite·"x_SUITE"·-group·top1·-case·tc12</code></pre><pre><code·class="makeup·er[·...·truncated·by·diffoscope;·len:·3046,·SHA:·512cb1613a13d07c19e7b3cd5932704cb028054c5bddd2bec62474c9c5a71ffd·...·] |
| 329 | this·test·case·executes·in·group·<code·class="inline">sub121</code>:</p><pre><code·class="text">$·ct_run·-suite·"x_SUITE"·-group·top1·-case·tc16</code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">run_test</span><span·class="p"·data-group-id="1273604228-1">(</span><span·class="p"·data-group-id="1273604228-2">[</span><span·class="p"·data-group-id="1273604228-3">{</span><span·class="ss">suite</span><span·class="p">,</span><span·class="s">"x_SUITE"</span><span·class="p"·data-group-id="1273604228-3">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1273604228-4">{</span><span·class="ss">group</span><span·class="p">,</span><span·class="p"·data-group-id="1273604228-5">[</span><span·class="ss">top1</span><span·class="p"·data-group-id="1273604228-5">]</span><span·class="p"·data-group-id="1273604228-4">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1273604228-6">{</span><span·class="ss">testcase</span><span·class="p">,</span><span·class="p"·data-group-id="1273604228-7">[</span><span·class="ss">tc16</span><span·class="p"·data-group-id="1273604228-7">]</span><span·class="p"·data-group-id="1273604228-6">}</span><span·class="p"·data-group-id="1273604228-2">]</span><span·class="p"·data-group-id="1273604228-1">)</span><span·class="p">.</span></code></pre><p>Using·the·specific·path·<code·class="inline">-group·[sub121]</code>·or·<code·class="inline">{group,[[sub121]]}</code>·gives·the·same | ||
| 330 | result·in·this·example.</p><p>The·following·executes·two·tests,·one·including·all·cases·and·subgroups·under | 330 | result·in·this·example.</p><p>The·following·executes·two·tests,·one·including·all·cases·and·subgroups·under |
| 331 | <code·class="inline">sub12</code>,·and·one·with·<em>only</em>·the·test·cases·in·<code·class="inline">sub12</code>:</p><pre><code·class="text">$·ct_run·-suite·"x_SUITE"·-group·sub12·[sub12]</code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">run_test</span><span·class="p"·data-group-id=" | 331 | <code·class="inline">sub12</code>,·and·one·with·<em>only</em>·the·test·cases·in·<code·class="inline">sub12</code>:</p><pre><code·class="text">$·ct_run·-suite·"x_SUITE"·-group·sub12·[sub12]</code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">run_test</span><span·class="p"·data-group-id="9176954947-1">(</span><span·class="p"·data-group-id="9176954947-2">[</span><span·class="p"·data-group-id="9176954947-3">{</span><span·class="ss">suite</span><span·class="p">,</span><span·class="s">"x_SUITE"</span><span·class="p"·data-group-id="91[·...·truncated·by·diffoscope;·len:·613,·SHA:·9997153eaa48a06c34ff81b278a18fc077e915717faa1ebbe2218732c5636376·...·]47-1">)</span><span·class="p">.</span></code></pre><p>In·the·following·example,·<code·class="inline">Common·Test</code>·finds·and·executes·two·tests,·one·for |
| 332 | the·path·from·<code·class="inline">top2</code>·to·<code·class="inline">sub2X2</code>·through·<code·class="inline">sub21</code>,·and·one·from·<code·class="inline">top2</code>·to | 332 | the·path·from·<code·class="inline">top2</code>·to·<code·class="inline">sub2X2</code>·through·<code·class="inline">sub21</code>,·and·one·from·<code·class="inline">top2</code>·to |
| 333 | <code·class="inline">sub2X2</code>·through·<code·class="inline">sub22</code>:</p><pre><code·class="text">$·ct_run·-suite·"x_SUITE"·-group·sub2X2</code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">run_test</span><span·class="p"·data-group-id=" | 333 | <code·class="inline">sub2X2</code>·through·<code·class="inline">sub22</code>:</p><pre><code·class="text">$·ct_run·-suite·"x_SUITE"·-group·sub2X2</code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">run_test</span><span·class="p"·data-group-id="6840521689-1">(</span><span·class="p"·data-group-id="6840521689-2">[</span><span·class="p"·data-group-id="6840521689-3">{</span><span·class="ss">suite</span><span·class="p">,</span><span·class="s">"x_SUITE"</span><span·class="p"·data-group-id="68[·...·truncated·by·diffoscope;·len:·457,·SHA:·a344075609d61cf960725618785b9851cf69c5c245f3180b9967daa498bdaa08·...·]-1">)</span><span·class="p">.</span></code></pre><p>In·the·following·example,·by·specifying·the·unique·path |
| 334 | <code·class="inline">top2·->·sub21·->·sub2X2</code>,·only·one·test·is·executed.·The·second·possible·path, | 334 | <code·class="inline">top2·->·sub21·->·sub2X2</code>,·only·one·test·is·executed.·The·second·possible·path, |
| 335 | from·<code·class="inline">top2</code>·to·<code·class="inline">sub2X2</code>·(from·the·former·example)·is·discarded:</p><pre><code·class="text">$·ct_run·-suite·"x_SUITE"·-group·[sub21,sub2X2]</code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">run_test</span><span·class="p"·data-group-id="1145022468-1">(</span><span·class="p"·data-group-id="1145022468-2">[</span><span·class="p"·data-group-id="1145022468-3">{</span><span·class="ss">suite</span><span·class="p">,</span><span·class="s">"x_SUITE"</span><span·class="p"·data-group-id="1145022468-3">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1145022468-4">{</span><span·class="ss">group</span><span·class="p">,</span><span·class="p"·data-group-id="1145022468-5">[</span><span·class="p"·data-group-id="1145022468-6">[</span><span·class="ss">sub21</span><span·class="p">,</span><span·class="ss">sub2X2</span><span·class="p"·data-group-id="1145022468-6">]</span><span·class="p"·data-group-id="1145022468-5">]</span><span·class="p"·data-group-id="1145022468-4">}</span><span·class="p"·data-group-id="1145022468-2">]</span><span·class="p"·data-group-id="1145022468-1">)</span><span·class="p">.</span></code></pre><p>The·following·executes·only·the·test·cases·for·<code·class="inline">sub22</code>·and·in·reverse·order | ||
| 336 | co | 335 | from·<code·class="inline">top2</code>·to·<code·class="inline">sub2X2</code>·(from·the·former·example)·is·discarded:</p><pre><code·class="text">$·ct_run·-suite·"x_SUITE"·-group·[sub21,sub2X2]</code></pre><pre><code·class="makeup·erlang"·translate=[·...·truncated·by·diffoscope;·len:·1186,·SHA:·0796aaedf3409677b6d1765d1c7bb51d1e4a55b5cb41e0fa71fc7b4a29f3c0f4·...·] |
| 336 | compared·to·the·group·definition:</p><pre><code·class="text">$·ct_run·-suite·"x_SUITE"·-group·[sub22]·-case·tc22·tc21</code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">run_test</span><span·class="p"·data-group-id="1570703128-1">(</span><span·class="p"·data-group-id="1570703128-2">[</span><span·class="p"·data-group-id="1570703128-3">{</span><span·class="ss">suite</span><span·class="p">,</span><span·class="s">"x_SUITE"</span><span·class="p"·data-group-id="1570703128-3">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1570703128-4">{</span><span·class="ss">group</span><span·class="p">,</span><span·class="p"·data-group-id="1570703128-5">[</span><span·class="p"·data-group-id="1570703128-6">[</span><span·class="ss">sub22</span><span·class="p"·data-group-id="1570703128-6">]</span><span·class="p"·data-group-id="1570703128-5">]</span><span·class="p"·data-group-id="1570703128-4">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1570703128-7">{</span><span·class="ss">testcase</span><span·class="p">,</span><span·class="p"·data-group-id="1570703128-8">[</span><span·class="ss">tc22</span><span·class="p">,</span><span·class="ss">tc21</span><span·class="p"·data-group-id="1570703128-8">]</span><span·class="p"·data-group-id="1570703128-7">}</span><span·class="p"·data-group-id="1570703128-2">]</span><span·class="p"·data-group-id="1570703128-1">)</span><span·class="p">.</span></code></pre><p>If·a·test·case·belonging·to·a·group·(according·to·the·group·definition)·is | ||
| 337 | executed·without·a·group·specification,·that·is,·simply·by·(using·the·command | 337 | executed·without·a·group·specification,·that·is,·simply·by·(using·the·command |
| 338 | line):</p><p><code·class="inline">$·ct_run·-suite·"my_SUITE"·-case·my_tc</code></p><p>or·(using·the·Erlang·shell):</p><p><code·class="inline">1>·ct:run_test([{suite,"my_SUITE"},·{testcase,my_tc}]).</code></p><p>then·<code·class="inline">Common·Test</code>·ignores·the·group·definition·and·executes·the·test·case·in | 338 | line):</p><p><code·class="inline">$·ct_run·-suite·"my_SUITE"·-case·my_tc</code></p><p>or·(using·the·Erlang·shell):</p><p><code·class="inline">1>·ct:run_test([{suite,"my_SUITE"},·{testcase,my_tc}]).</code></p><p>then·<code·class="inline">Common·Test</code>·ignores·the·group·definition·and·executes·the·test·case·in |
| 339 | the·scope·of·the·test·suite·only·(no·group·configuration·functions·are·called).</p><p>The·group·specification·feature,·as·presented·in·this·section,·can·also·be·used | 339 | the·scope·of·the·test·suite·only·(no·group·configuration·functions·are·called).</p><p>The·group·specification·feature,·as·presented·in·this·section,·can·also·be·used |
| 340 | in·<a·href="run_test_chapter.html#test_specifications">Test·Specifications</a>·(with·some | 340 | in·<a·href="run_test_chapter.html#test_specifications">Test·Specifications</a>·(with·some |
| 341 | extra·features·added).</p><h2·id="running-the-interactive-shell-mode"·class="section-heading"> | 341 | extra·features·added).</p><h2·id="running-the-interactive-shell-mode"·class="section-heading"> |
| 342 | ··<a·href="#running-the-interactive-shell-mode"·class="hover-link"> | 342 | ··<a·href="#running-the-interactive-shell-mode"·class="hover-link"> |
| 343 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 343 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 358, 20 lines modified | Offset 358, 20 lines modified | ||
| 358 | displayed.·If·<code·class="inline">Common·Test</code>·has·been·run·from·the·same·directory·earlier,·the | 358 | displayed.·If·<code·class="inline">Common·Test</code>·has·been·run·from·the·same·directory·earlier,·the |
| 359 | same·configuration·file(s)·are·used·again.·If·<code·class="inline">Common·Test</code>·has·not·been·run | 359 | same·configuration·file(s)·are·used·again.·If·<code·class="inline">Common·Test</code>·has·not·been·run |
| 360 | from·this·directory·before,·no·configuration·files·are·available.</p><p>If·any·functions·using·"required·configuration·data"·(for·example,·functions | 360 | from·this·directory·before,·no·configuration·files·are·available.</p><p>If·any·functions·using·"required·configuration·data"·(for·example,·functions |
| 361 | <code·class="inline">ct_telnet</code>·or·<code·class="inline">ct_ftp</code>)·are·to·be·called·from·the·Erlang·shell,·first·require | 361 | <code·class="inline">ct_telnet</code>·or·<code·class="inline">ct_ftp</code>)·are·to·be·called·from·the·Erlang·shell,·first·require |
| 362 | configuration·data·with·<a·href="ct.html#require/1"><code·class="inline">ct:require/1,2</code></a>.·This·is·equivalent | 362 | configuration·data·with·<a·href="ct.html#require/1"><code·class="inline">ct:require/1,2</code></a>.·This·is·equivalent |
| 363 | to·a·<code·class="inline">require</code>·statement·in·the | 363 | to·a·<code·class="inline">require</code>·statement·in·the |
| 364 | <a·href="write_test_chapter.html#suite">Test·Suite·Information·Function</a>·or·in·the | 364 | <a·href="write_test_chapter.html#suite">Test·Suite·Information·Function</a>·or·in·the |
| 365 | <a·href="write_test_chapter.html#info_function">Test·Case·Information·Function</a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">require</span><span·class="p"·data-group-id="2 | 365 | <a·href="write_test_chapter.html#info_function">Test·Case·Information·Function</a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ct</span><span·class="p">:</span><span·class="nf">require</span><span·class="p"·data-group-id="2354426446-1">(</span><span·class="ss">unix_telnet</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">unix</span><span·class="p"·data-group-id="2354426446-1">)</span><span·class="p">.</span><span·class="w"> |
| 366 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 366 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 367 | 2>·</span><span·class="nc">ct_telnet</span><span·class="p">:</span><span·class="nf">open</span><span·class="p"·data-group-id="2 | 367 | 2>·</span><span·class="nc">ct_telnet</span><span·class="p">:</span><span·class="nf">open</span><span·class="p"·data-group-id="2354426446-2">(</span><span·class="ss">unix_telnet</span><span·class="p"·data-group-id="2354426446-2">)</span><span·class="p">.</span><span·class="w"> |
| 368 | </span><span·class="p"·data-group-id="2 | 368 | </span><span·class="p"·data-group-id="2354426446-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.105</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="2354426446-3">}</span><span·class="gp·unselectable"> |
| 369 | 4>·</span><span·class="nc">ct_telnet</span><span·class="p">:</span><span·class="nf">cmd</span><span·class="p"·data-group-id="2 | 369 | 4>·</span><span·class="nc">ct_telnet</span><span·class="p">:</span><span·class="nf">cmd</span><span·class="p"·data-group-id="2354426446-4">(</span><span·class="ss">unix_telnet</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"ls·."</span><span·class="p"·data-group-id="2354426446-4">)</span><span·class="p">.</span><span·class="w"> |
| 370 | </span><span·class="p"·data-group-id="2 | 370 | </span><span·class="p"·data-group-id="2354426446-5">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="2354426446-6">[</span><span·class="s">"ls·."</span><span·class="p">,</span><span·class="s">"file1··..."</span><span·class="p">,</span>[·...·truncated·by·diffoscope;·len:·166,·SHA:·8565e8d470c480f5b666986becc63109d9c11701cb4bbc27a9a2e9c658603f17·...·]-5">}</span></code></pre><p>Everything·that·<code·class="inline">Common·Test</code>·normally·prints·in·the·test·case·logs,·are·in·the |
| 371 | interactive·mode·written·to·a·log·named·<code·class="inline">ctlog.html</code>·in·directory | 371 | interactive·mode·written·to·a·log·named·<code·class="inline">ctlog.html</code>·in·directory |
| 372 | <code·class="inline">ct_run.<timestamp></code>.·A·link·to·this·file·is·available·in·the·file·named | 372 | <code·class="inline">ct_run.<timestamp></code>.·A·link·to·this·file·is·available·in·the·file·named |
| 373 | <code·class="inline">last_interactive.html</code>·in·the·directory·from·which·you·execute·<code·class="inline">ct_run</code>. | 373 | <code·class="inline">last_interactive.html</code>·in·the·directory·from·which·you·execute·<code·class="inline">ct_run</code>. |
| 374 | Specifying·a·different·root·directory·for·the·logs·than·the·current·working | 374 | Specifying·a·different·root·directory·for·the·logs·than·the·current·working |
| 375 | directory·is·not·supported.</p><p>If·you·wish·to·exit·the·interactive·mode·(for·example,·to·start·an·automated | 375 | directory·is·not·supported.</p><p>If·you·wish·to·exit·the·interactive·mode·(for·example,·to·start·an·automated |
| 376 | test·run·with·<a·href="ct.html#run_test/1"><code·class="inline">ct:run_test/1</code></a>),·call·function·<a·href="ct.html#stop_interactive/0"><code·class="inline">ct:stop_interactive/0</code></a>.·This | 376 | test·run·with·<a·href="ct.html#run_test/1"><code·class="inline">ct:run_test/1</code></a>),·call·function·<a·href="ct.html#stop_interactive/0"><code·class="inline">ct:stop_interactive/0</code></a>.·This |
| 377 | shuts·down·the·running·<code·class="inline">ct</code>·application.·Associations·between·configuration | 377 | shuts·down·the·running·<code·class="inline">ct</code>·application.·Associations·between·configuration |
| Offset 450, 16 lines modified | Offset 450, 16 lines modified | ||
| 450 | ··</a> | 450 | ··</a> |
| 451 | ··<span·class="text">Test·Specification·File·Inclusion</span> | 451 | ··<span·class="text">Test·Specification·File·Inclusion</span> |
| 452 | </h3> | 452 | </h3> |
| 453 | <p>With·the·term·<code·class="inline">specs</code>,·a·test·specification·can·include·other·specifications.·An | 453 | <p>With·the·term·<code·class="inline">specs</code>,·a·test·specification·can·include·other·specifications.·An |
| 454 | included·specification·can·either·be·joined·with·the·source·specification·or | 454 | included·specification·can·either·be·joined·with·the·source·specification·or |
| 455 | used·to·produce·a·separate·test·run·(as·with·start·flag/option·<code·class="inline">join_specs</code> | 455 | used·to·produce·a·separate·test·run·(as·with·start·flag/option·<code·class="inline">join_specs</code> |
| 456 | above).</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·In·specification·file·"a.spec"</span><span·class="w"> | 456 | above).</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·In·specification·file·"a.spec"</span><span·class="w"> |
| 457 | </span><span·class="p"·data-group-id=" | 457 | </span><span·class="p"·data-group-id="8677798158-1">{</span><span·class="ss">specs</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">join</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8677798158-2">[</span><span·class="s">"b.spec[·...·truncated·by·diffoscope;·len:·196,·SHA:·ab77eca35105569c2a023bee248fe38fe20482103f65882c22e1ceb01720b62b·...·]-1">}</span><span·class="p">.</span><span·class="w"> |
| 458 | </span><span·class="p"·data-group-id=" | 458 | </span><span·class="p"·data-group-id="8677798158-3">{</span><span·class="ss">specs</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">separate</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8677798158-4">[</span><span·class="s">"d.[·...·truncated·by·diffoscope;·len:·200,·SHA:·bb91e85042a21465f67959499ee32d564a7565d53b9d18ccea42b8224c4f5400·...·]-3">}</span><span·class="p">.</span><span·class="w"> |
| 459 | </span><span·class="c1">%%·Config·and·test·terms·follow</span><span·class="w"> | 459 | </span><span·class="c1">%%·Config·and·test·terms·follow</span><span·class="w"> |
| 460 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>In·this·example,·the·test·terms·defined·in·files·"b.spec"·and·"c.spec"·are | 460 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>In·this·example,·the·test·terms·defined·in·files·"b.spec"·and·"c.spec"·are |
| 461 | joined·with·the·terms·in·source·specification·"a.spec"·(if·any).·The·inclusion | 461 | joined·with·the·terms·in·source·specification·"a.spec"·(if·any).·The·inclusion |
| 462 | of·specifications·"d.spec"·and·"e.spec"·results·in·two·separate,·and | 462 | of·specifications·"d.spec"·and·"e.spec"·results·in·two·separate,·and |
| 463 | independent,·test·runs·(one·for·each·included·specification).</p><p>Option·<code·class="inline">join</code>·does·not·imply·that·the·test·terms·are·merged,·only·that·all·tests | 463 | independent,·test·runs·(one·for·each·included·specification).</p><p>Option·<code·class="inline">join</code>·does·not·imply·that·the·test·terms·are·merged,·only·that·all·tests |
| 464 | are·executed·in·one·single·test·run.</p><p>Joined·specifications·share·common·configuration·settings,·such·as·the·list·of | 464 | are·executed·in·one·single·test·run.</p><p>Joined·specifications·share·common·configuration·settings,·such·as·the·list·of |
| 465 | <code·class="inline">config</code>·files·or·<code·class="inline">include</code>·directories.·For·configurations·that·cannot·be | 465 | <code·class="inline">config</code>·files·or·<code·class="inline">include</code>·directories.·For·configurations·that·cannot·be |
| Offset 513, 162 lines modified | Offset 513, 162 lines modified | ||
| 513 | Testing).·The·node·parameters·in·term·<code·class="inline">init</code>·are·only·relevant·in·the·latter | 513 | Testing).·The·node·parameters·in·term·<code·class="inline">init</code>·are·only·relevant·in·the·latter |
| 514 | (see·section·<a·href="ct_master_chapter.html#test_specifications">Test·Specifications</a>·in | 514 | (see·section·<a·href="ct_master_chapter.html#test_specifications">Test·Specifications</a>·in |
| 515 | Large·Scale·Testing).·For·details·about·the·various·terms,·see·the·corresponding | 515 | Large·Scale·Testing).·For·details·about·the·various·terms,·see·the·corresponding |
| 516 | sections·in·the·User's·Guide,·for·example,·the·following:</p><ul><li>The·<a·href="run_test_chapter.html#ct_run"><code·class="inline">ct_run</code>·program</a>·for·an·overview·of | 516 | sections·in·the·User's·Guide,·for·example,·the·following:</p><ul><li>The·<a·href="run_test_chapter.html#ct_run"><code·class="inline">ct_run</code>·program</a>·for·an·overview·of |
| 517 | available·start·flags·(as·most·flags·have·a·corresponding·configuration·term)</li><li><a·href="write_test_chapter.html#logging">Logging</a>·(for·terms·<code·class="inline">verbosity</code>,·<code·class="inline">stylesheet</code>, | 517 | available·start·flags·(as·most·flags·have·a·corresponding·configuration·term)</li><li><a·href="write_test_chapter.html#logging">Logging</a>·(for·terms·<code·class="inline">verbosity</code>,·<code·class="inline">stylesheet</code>, |
| 518 | <code·class="inline">basic_html</code>·and·<code·class="inline">esc_chars</code>)</li><li><a·href="config_file_chapter.html#top">External·Configuration·Data</a>·(for·terms·<code·class="inline">config</code> | 518 | <code·class="inline">basic_html</code>·and·<code·class="inline">esc_chars</code>)</li><li><a·href="config_file_chapter.html#top">External·Configuration·Data</a>·(for·terms·<code·class="inline">config</code> |
| 519 | and·<code·class="inline">userconfig</code>)</li><li><a·href="event_handler_chapter.html#event_handling">Event·Handling</a>·(for·the | 519 | and·<code·class="inline">userconfig</code>)</li><li><a·href="event_handler_chapter.html#event_handling">Event·Handling</a>·(for·the |
| 520 | <code·class="inline">event_handler</code>·term)</li><li><a·href="ct_hooks_chapter.html#installing">Common·Test·Hooks</a>·(for·term·<code·class="inline">ct_hooks</code>)</li></ul><p><em>Configuration·terms:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 520 | <code·class="inline">event_handler</code>·term)</li><li><a·href="ct_hooks_chapter.html#installing">Common·Test·Hooks</a>·(for·term·<code·class="inline">ct_hooks</code>)</li></ul><p><em>Configuration·terms:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="7245733618-1">{</span><span·class="ss">merge_tests</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Bool</span><span·class="p"·data-group-id="7245733618-1">}</span><span·class="p">.</span><span·class="w"> |
| 521 | </span><span·class="p"·data-group-id=" | 521 | </span><span·class="p"·data-group-id="7245733618-2">{</span><span·class="ss">define</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Constant</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Value</span><span·class="p"·data-group-id="7245733618-2">}</span><span·class="p">.</span><span·class="w"> |
| 522 | </span><span·class="p"·data-group-id=" | 522 | </span><span·class="p"·data-group-id="7245733618-3">{</span><span·class="ss">specs</span><span·class="p">,</span><span·class="w">·</span><span·class="n">InclSpecsOption</span><span·class="p">,</span><span·class="w">·</span><span·class="n">TestSpecs</span><span·class="p"·data-group-id="72457336[·...·truncated·by·diffoscope;·len:·2,·SHA:·4ec9599fc203d176a301536c2e091a19bc852759b255bd6818810a42c5fed14a·...·]-3">}</span><span·class="p">.</span><span·class="w"> |
| 523 | </span><span·class="p"·data-group-id=" | 523 | </span><span·class="p"·data-group-id="7245733618-4">{</span><span·class="nb">node</span><span·class="p">,</span><span·class="w">·</span><span·class="n">NodeAlias</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Node</span><span·class="p"·data-group-id="7245733618-4">}</span><span·class="p">.</span><span·class="w"> |
| 524 | </span><span·class="p"·data-group-id=" | 524 | </span><span·class="p"·data-group-id="7245733618-5">{</span><span·class="ss">init</span><span·class="p">,</span><span·class="w">·</span><span·class="n">InitOptions</span><span·class="p"·data-group-id="7245733618-5">}</span><span·class="p">.</span><span·class="w"> |
| 525 | </span><span·class="p"·data-group-id=" | 525 | </span><span·class="p"·data-group-id="7245733618-6">{</span><span·class="ss">init</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7245733618-7">[</span><span·class="n">NodeAlias</span><span·class="p"·data-group-id="7245733618-7">]</span><span·class="p">,</s[·...·truncated·by·diffoscope;·len:·103,·SHA:·4a0c95de0c7c97b2d449a041feae4283b03f201b8d1fe03f4852bcf1ea52158e·...·]-6">}</span><span·class="p">.</span><span·class="w"> |
| 526 | </span><span·class="p"·data-group-id=" | 526 | </span><span·class="p"·data-group-id="7245733618-8">{</span><span·class="ss">label</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Label</span><span·class="p"·data-group-id="7245733618-8">}</span><span·class="p">.</span><span·class="w"> |
| 527 | </span><span·class="p"·data-group-id=" | 527 | </span><span·class="p"·data-group-id="7245733618-9">{</span><span·class="ss">label</span><span·class="p">,</span><span·class="w">·</span><span·class="n">NodeRefs</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Label</span><span·class="p"·data-group-id="7245733618-9">}</span><span·class="p">.</span><span·class="w"> |
| 528 | </span><span·class="p"·data-group-id=" | 528 | </span><span·class="p"·data-group-id="7245733618-10">{</span><span·class="ss">verbosity</span><span·class="p">,</span><span·class="w">·</span><span·class="n">VerbosityLevels</span><span·class="p"·data-group-id="7245733618-10">}</span><span·class="p">.</span><span·class="w"> |
| 529 | </span><span·class="p"·data-group-id=" | 529 | </span><span·class="p"·data-group-id="7245733618-11">{</span><span·class="ss">verbosity</span><span·class="p">,</span><span·class="w">·</span><span·class="n">NodeRefs</span><span·class="p">,</span><span·class="w">·</span><span·class="n">VerbosityLevels</span><span·class="p"·data-group-id="7245[·...·truncated·by·diffoscope;·len:·6,·SHA:·e3ad3dc43ba93d8e71c14dfa11019774e2f9386286e3c1884169c67d4fc762ac·...·]-11">}</span><span·class="p">.</span><span·class="w"> |
| 530 | </span><span·class="p"·data-group-id=" | 530 | </span><span·class="p"·data-group-id="7245733618-12">{</span><span·class="ss">stylesheet</span><span·class="p">,</span><span·class="w">·</span><span·class="n">CSSFile</span><span·class="p"·data-group-id="7245733618-12">}</span><span·class="p">.</span><span·class="w"> |
| 531 | </span><span·class="p"·data-group-id=" | 531 | </span><span·class="p"·data-group-id="7245733618-13">{</span><span·class="ss">stylesheet</span><span·class="p">,</span><span·class="w">·</span><span·class="n">NodeRefs</span><span·class="p">,</span><span·class="w">·</span><span·class="n">CSSFile</span><span·class="p"·data-group-id="7245733618-13">}</span><span·class="p">.</span><span·class="w"> |
| 532 | </span><span·class="p"·data-group-id=" | 532 | </span><span·class="p"·data-group-id="7245733618-14">{</span><span·class="ss">silent_connections</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ConnTypes</span><span·class="p"·data-group-id="7245733618-14">}</span><span·class="p">.</span><span·class="w"> |
| 533 | </span><span·class="p"·data-group-id=" | 533 | </span><span·class="p"·data-group-id="7245733618-15">{</span><span·class="ss">silent_connections</span><span·class="p">,</span><span·class="w">·</span><span·class="n">NodeRefs</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ConnTypes</span><span·class="p"·data-group-id="7[·...·truncated·by·diffoscope;·len:·9,·SHA:·d9712f43a4b375fded75ec78b0d3789ee26ca1182fbbe57a73d1a3ed5f162f48·...·]-15">}</span><span·class="p">.</span><span·class="w"> |
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| 125 | ····<small·class="app-vsn"·translate="no">(common_test·v1.27.7)</small> | 125 | ····<small·class="app-vsn"·translate="no">(common_test·v1.27.7)</small> |
| 126 | ··</h1> | 126 | ··</h1> |
| 127 | ····<section·id="moduledoc"> | 127 | ····<section·id="moduledoc"> |
| 128 | <p>Callback·module·for·<a·href="ct_telnet.html"><code·class="inline">ct_telnet</code></a>,·for·connecting·to·a·Telnet·server·on·a·UNIX | 128 | <p>Callback·module·for·<a·href="ct_telnet.html"><code·class="inline">ct_telnet</code></a>,·for·connecting·to·a·Telnet·server·on·a·UNIX |
| 129 | host.</p><p>It·requires·the·following·entry·in·the·configuration·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 129 | host.</p><p>It·requires·the·following·entry·in·the·configuration·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="7270867299-1">{</span><span·class="ss">unix</span><span·class="p">,</span><span·class="p"·data-group-id="7270867299-2">[</span><span·class="p"·data-group-id="7270867299-3">{</span><span·class="ss">telnet</span><span·class="p">,</span><span·class="n">HostNa[·...·truncated·by·diffoscope;·len:·61,·SHA:·65d3f0458c39ff5a18abf6606f580c0ccd44f86e532ea1feb90dcae32513c5fe·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 130 | ·······</span><span·class="p"·data-group-id=" | 130 | ·······</span><span·class="p"·data-group-id="7270867299-4">{</span><span·class="ss">port</span><span·class="p">,</span><span·class="n">PortNum</span><span·class="p"·data-group-id="7270867299-4">}</span><span·class="p">,</span><span·class="w">·················</span><span·class="c1">%·optional</span><span·class="w"> |
| 131 | ·······</span><span·class="p"·data-group-id=" | 131 | ·······</span><span·class="p"·data-group-id="7270867299-5">{</span><span·class="ss">username</span><span·class="p">,</span><span·class="n">UserName</span><span·class="p"·data-group-id="7270867299-5">}</span><span·class="p">,</span><span·class="w"> |
| 132 | ·······</span><span·class="p"·data-group-id="8004655295-6">{</span><span·class="ss">password</span><span·class="p">,</span><span·class="n">Password</span><span·class="p"·data-group-id="8004655295-6">}</span><span·class="p">,</span><span·class="w"> | ||
| 133 | ·······</span><span·class="p"·data-group-id=" | 132 | ·······</span><span·class="p"·data-group-id="7270867299-6">{</span><span·class="ss">password</span><span·class="p">,</span><span·class="n">Password</span><span·class="p"·data-group-id="7270867299-6">}</span><span·class="p">,</span><span·class="w"> |
| 133 | ·······</span><span·class="p"·data-group-id="7270867299-7">{</span><span·class="ss">keep_alive</span><span·class="p">,</span><span·class="n">Bool</span><span·class="p"·data-group-id="7270867299-7">}</span><span·class="p"·data-group-id="7270867299-2">]</span><span·class="p"·data-group-id="7270867299-1">}</span><span·class="p">.</span><span·class="w">············</span><span·class="c1">%·optional</span></code></pre><p>To·communicate·through·Telnet·to·the·host·specified·by·<code·class="inline">HostNameOrIpAddress</code>, | ||
| 134 | use·the·interface·functions·in·<a·href="ct_telnet.html"><code·class="inline">ct_telnet</code></a>,·for·example,·<code·class="inline">open(Name)</code>·and | 134 | use·the·interface·functions·in·<a·href="ct_telnet.html"><code·class="inline">ct_telnet</code></a>,·for·example,·<code·class="inline">open(Name)</code>·and |
| 135 | <code·class="inline">cmd(Name,Cmd)</code>.</p><p><code·class="inline">Name</code>·is·the·name·you·allocated·to·the·Unix·host·in·your·<code·class="inline">require</code>·statement, | 135 | <code·class="inline">cmd(Name,Cmd)</code>.</p><p><code·class="inline">Name</code>·is·the·name·you·allocated·to·the·Unix·host·in·your·<code·class="inline">require</code>·statement, |
| 136 | for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">suite</span><span·class="p"·data-group-id="6 | 136 | for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">suite</span><span·class="p"·data-group-id="6710321427-1">(</span><span·class="p"·data-group-id="6710321427-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="6710321427-2">[</span><span·class="p"·data-group-id="6710321427-3">{</span>[·...·truncated·by·diffoscope;·len:·1120,·SHA:·b763e96d30245c0e5cced789546e121cea71e0179ec7a75c0a60f299bf2bd75a·...·]-1">)</span><span·class="p">.</span></code></pre><p>The·"keep·alive"·activity·(that·is,·that·<code·class="inline">Common·Test</code>·sends·NOP·to·the·server |
| 137 | every·10·seconds·if·the·connection·is·idle)·can·be·enabled·or·disabled·for·one | 137 | every·10·seconds·if·the·connection·is·idle)·can·be·enabled·or·disabled·for·one |
| 138 | particular·connection·as·described·here.·It·can·be·disabled·for·all·connections | 138 | particular·connection·as·described·here.·It·can·be·disabled·for·all·connections |
| 139 | using·<code·class="inline">telnet_settings</code>·(see·<a·href="ct_telnet.html"><code·class="inline">ct_telnet</code></a>).</p><p>The·<code·class="inline">{port,PortNum}</code>·tuple·is·optional·and·if·omitted,·default·Telnet·port·23·is | 139 | using·<code·class="inline">telnet_settings</code>·(see·<a·href="ct_telnet.html"><code·class="inline">ct_telnet</code></a>).</p><p>The·<code·class="inline">{port,PortNum}</code>·tuple·is·optional·and·if·omitted,·default·Telnet·port·23·is |
| 140 | used.·Also·the·<code·class="inline">keep_alive</code>·tuple·is·optional,·and·the·value·default·to·<code·class="inline">true</code> | 140 | used.·Also·the·<code·class="inline">keep_alive</code>·tuple·is·optional,·and·the·value·default·to·<code·class="inline">true</code> |
| 141 | (enabled).</p><h2·id="module-see-also"·class="section-heading"> | 141 | (enabled).</p><h2·id="module-see-also"·class="section-heading"> |
| 142 | ··<a·href="#module-see-also"·class="hover-link"> | 142 | ··<a·href="#module-see-also"·class="hover-link"> |
| 143 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 143 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 262, 58 lines modified | Offset 262, 58 lines modified | ||
| 262 | <a·href="write_test_chapter.html#timetraps">Timetrap·Time-Outs</a>.</p></li><li><p><strong><code·class="inline">userdata</code></strong>·-·Specifies·any·data·related·to·the·test·case.·This·data·can·be | 262 | <a·href="write_test_chapter.html#timetraps">Timetrap·Time-Outs</a>.</p></li><li><p><strong><code·class="inline">userdata</code></strong>·-·Specifies·any·data·related·to·the·test·case.·This·data·can·be |
| 263 | retrieved·at·any·time·using·the·<a·href="ct.html#userdata/3"><code·class="inline">ct:userdata/3</code></a>·utility·function.</p></li><li><p><strong><code·class="inline">silent_connections</code></strong>·-·For·details,·see·section | 263 | retrieved·at·any·time·using·the·<a·href="ct.html#userdata/3"><code·class="inline">ct:userdata/3</code></a>·utility·function.</p></li><li><p><strong><code·class="inline">silent_connections</code></strong>·-·For·details,·see·section |
| 264 | <a·href="run_test_chapter.html#silent_connections">Silent·Connections</a>.</p></li><li><p><strong><code·class="inline">require</code></strong>·-·Specifies·configuration·variables·required·by·the·test·case. | 264 | <a·href="run_test_chapter.html#silent_connections">Silent·Connections</a>.</p></li><li><p><strong><code·class="inline">require</code></strong>·-·Specifies·configuration·variables·required·by·the·test·case. |
| 265 | If·the·required·configuration·variables·are·not·found·in·any·of·the·test | 265 | If·the·required·configuration·variables·are·not·found·in·any·of·the·test |
| 266 | system·configuration·files,·the·test·case·is·skipped.</p><p>A·required·variable·can·also·be·given·a·default·value·to·be·used·if·the | 266 | system·configuration·files,·the·test·case·is·skipped.</p><p>A·required·variable·can·also·be·given·a·default·value·to·be·used·if·the |
| 267 | variable·is·not·found·in·any·configuration·file.·To·specify·a·default·value, | 267 | variable·is·not·found·in·any·configuration·file.·To·specify·a·default·value, |
| 268 | add·a·tuple·on·the·form·<code·class="inline">{default_config,ConfigVariableName,Value}</code>·to·the | 268 | add·a·tuple·on·the·form·<code·class="inline">{default_config,ConfigVariableName,Value}</code>·to·the |
| 269 | test·case·information·list·(the·position·in·the·list·is·irrelevant).</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">testcase1</span><span·class="p"·data-group-id=" | 269 | test·case·information·list·(the·position·in·the·list·is·irrelevant).</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">testcase1</span><span·class="p"·data-group-id="0340144710-1">(</span><span·class="p"·data-group-id="0340144710-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 270 | ····</span><span·class="p"·data-group-id=" | 270 | ····</span><span·class="p"·data-group-id="0340144710-2">[</span><span·class="p"·data-group-id="0340144710-3">{</span><span·class="ss">require</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ftp</span><span·class="p"·data-group-id="0340144710-3">}</span><span·class="p">,</span><span·class="w"> |
| 271 | ·····</span><span·class="p"·data-group-id=" | 271 | ·····</span><span·class="p"·data-group-id="0340144710-4">{</span><span·class="ss">default_config</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ftp</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0340144710-5">[</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·195,·SHA:·10466530680ff61d52f899db6989e6cafdca41b5c8bf9bef93dee46f44f883a6·...·]-6">}</span><span·class="p">,</span><span·class="w"> |
| 272 | ····························</span><span·class="p"·data-group-id="0340144710-7">{</span><span·class="ss">username</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"aladdin"</span><span·class="p"·data-group-id="0340144710-7">}</span><span·class="p">,</span><span·class="w"> | ||
| 273 | ····························</span><span·class="p"·data-group-id="0340144710-8">{</span><span·class="ss">password</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"sesame"</span><span·class="p"·data-group-id="0340144710-8">}</span><span·class="p"·data-group-id="0340144710-5">]</span><span·class="p"·data-group-id="0340144710-4">}</span><span·class="p">}</span><span·class="p"·data-group-id="0340144710-2">]</span><span·class="p">.</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">testcase2</span><span·class="p"·data-group-id="3874081410-1">(</span><span·class="p"·data-group-id="3874081410-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | ||
| 274 | ····</span><span·class="p"·data-group-id="3874081410-2">[</span><span·class="p"·data-group-id="3874081410-3">{</span><span·class="ss">require</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">unix_telnet</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">unix</span><span·class="p"·data-group-id="3874081410-3">}</span><span·class="p">,</span><span·class="w"> | ||
| 275 | ·····</span><span·class="p"·data-group-id="3874081410-4">{</span><span·class="ss">require</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3874081410-5">{</span><span·class="ss">unix</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3874081410-6">[</span><span·class="ss">telnet</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">username</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">password</span><span·class="p"·data-group-id="3874081410-6">]</span><span·class="p"·data-group-id="3874081410-5">}</span><span·class="p"·data-group-id="3874081410-4">}</span><span·class="p">,</span><span·class="w"> | ||
| 276 | ·····</span><span·class="p"·data-group-id="3874081410-7">{</span><span·class="ss">default_config</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">unix</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3874081410-8">[</span><span·class="p"·data-group-id="3874081410-9">{</span><span·class="ss">telnet</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"my_telnet_host"</span><span·class="p"·data-group-id="3874081410-9">}</span><span·class="p">,</span><span·class="w"> | ||
| 272 | ····························</span><span·class="p"·data-group-id="8 | 277 | ·····························</span><span·class="p"·data-group-id="3874081410-10">{</span><span·class="ss">username</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"aladdin"</span><span·class="p"·data-group-id="3874081410-10">}</span><span·class="p">,</span><span·class="w"> |
| 273 | ····························</span><span·class="p"·data-group-id="8467864179-8">{</span><span·class="ss">password</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"sesame"</span><span·class="p"·data-group-id="8467864179-8">}</span><span·class="p"·data-group-id="8467864179-5">]</span><span·class="p"·data-group-id="8467864179-4">}</span><span·class="p">}</span><span·class="p"·data-group-id="8467864179-2">]</span><span·class="p">.</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">testcase2</span><span·class="p"·data-group-id="7056655869-1">(</span><span·class="p"·data-group-id="7056655869-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | ||
| 274 | ····</span><span·class="p"·data-group-id="7056655869-2">[</span><span·class="p"·data-group-id="7056655869-3">{</span><span·class="ss">require</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">unix_telnet</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">unix</span><span·class="p"·data-group-id="7056655869-3">}</span><span·class="p">,</span><span·class="w"> | ||
| 275 | ·····</span><span·class="p"·data-group-id="7056655869-4">{</span><span·class="ss">require</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7056655869-5">{</span><span·class="ss">unix</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7056655869-6">[</span><span·class="ss">telnet</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">username</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">password</span><span·class="p"·data-group-id="7056655869-6">]</span><span·class="p"·data-group-id="7056655869-5">}</span><span·class="p"·data-group-id="7056655869-4">}</span><span·class="p">,</span><span·class="w"> | ||
| 276 | ·····</span><span·class="p"·data-group-id="7056655869-7">{</span><span·class="ss">default_config</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">unix</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7056655869-8">[</span><span·class="p"·data-group-id="7056655869-9">{</span><span·class="ss">telnet</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"my_telnet_host"</span><span·class="p"·data-group-id="7056655869-9">}</span><span·class="p">,</span><span·class="w"> | ||
| 277 | ·····························</span><span·class="p"·data-group-id="7056655869-10">{</span><span·class="ss">username</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"aladdin"</span><span·class="p"·data-group-id="7056655869-10">}</span><span·class="p">,</span><span·class="w"> | ||
| 278 | ·····························</span><span·class="p"·data-group-id=" | 278 | ·····························</span><span·class="p"·data-group-id="3874081410-11">{</span><span·class="ss">password</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"sesame"</span><span·class="p"·data-group-id="3874081410-11">}</span><span·class="p"·data-group-id="3874081410-8">]</span><span[·...·truncated·by·diffoscope;·len:·113,·SHA:·9725e46715b01d16442c73a0141fe6f1eea4c0c9d290d51bafdf90fa5b2de1ac·...·]-2">]</span><span·class="p">.</span></code></pre></li></ul><p>For·more·information·about·<code·class="inline">require</code>,·see·section |
| 279 | <a·href="config_file_chapter.html#require_config_data">Requiring·and·Reading·Configuration·Data</a> | 279 | <a·href="config_file_chapter.html#require_config_data">Requiring·and·Reading·Configuration·Data</a> |
| 280 | in·section·External·Configuration·Data·and·function | 280 | in·section·External·Configuration·Data·and·function |
| 281 | <a·href="ct.html#require/1"><code·class="inline">ct:require/1/2</code></a>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Specifying·a·default·value·for·a·required·variable·can·result·in·a·test·case | 281 | <a·href="ct.html#require/1"><code·class="inline">ct:require/1/2</code></a>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Specifying·a·default·value·for·a·required·variable·can·result·in·a·test·case |
| 282 | always·getting·executed.·This·might·not·be·a·desired·behavior.</p></section><p>If·<code·class="inline">timetrap</code>·or·<code·class="inline">require</code>,·or·both,·is·not·set·specifically·for·a·particular | 282 | always·getting·executed.·This·might·not·be·a·desired·behavior.</p></section><p>If·<code·class="inline">timetrap</code>·or·<code·class="inline">require</code>,·or·both,·is·not·set·specifically·for·a·particular |
| 283 | test·case,·default·values·specified·by·function | 283 | test·case,·default·values·specified·by·function |
| 284 | <a·href="ct_suite.html#c:suite/0"><code·class="inline">suite/0</code></a>·are·used.</p><p>Tags·other·than·the·earlier·mentioned·are·ignored·by·the·test·server.</p><p>An·example·of·a·test·case·information·function·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">reboot_node</span><span·class="p"·data-group-id=" | 284 | <a·href="ct_suite.html#c:suite/0"><code·class="inline">suite/0</code></a>·are·used.</p><p>Tags·other·than·the·earlier·mentioned·are·ignored·by·the·test·server.</p><p>An·example·of·a·test·case·information·function·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">reboot_node</span><span·class="p"·data-group-id="7534080896-1">(</span><span·class="p"·data-group-id="7534080896-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 285 | ····</span><span·class="p"·data-group-id=" | 285 | ····</span><span·class="p"·data-group-id="7534080896-2">[</span><span·class="w"> |
| 286 | ·····</span><span·class="p"·data-group-id=" | 286 | ·····</span><span·class="p"·data-group-id="7534080896-3">{</span><span·class="ss">timetrap</span><span·class="p">,</span><span·class="p"·data-group-id="7534080896-4">{</span><span·class="ss">seconds</span><span·class="p">,</span><span·class="mi">60</span><span·class="p"·data-group-id="7534080896-4"[·...·truncated·by·diffoscope;·len:·50,·SHA:·57635a502717a43cb3b2ffb3e7297ba153dc38013f4bb08646ed0ae88666f0d5·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 287 | ·····</span><span·class="p"·data-group-id=" | 287 | ·····</span><span·class="p"·data-group-id="7534080896-5">{</span><span·class="ss">require</span><span·class="p">,</span><span·class="ss">interfaces</span><span·class="p"·data-group-id="7534080896-5">}</span><span·class="p">,</span><span·class="w"> |
| 288 | ·····</span><span·class="p"·data-group-id=" | 288 | ·····</span><span·class="p"·data-group-id="7534080896-6">{</span><span·class="ss">userdata</span><span·class="p">,</span><span·class="w"> |
| 289 | ·········</span><span·class="p"·data-group-id=" | 289 | ·········</span><span·class="p"·data-group-id="7534080896-7">[</span><span·class="p"·data-group-id="7534080896-8">{</span><span·class="ss">description</span><span·class="p">,</span><span·class="s">"System·Upgrade:·RpuAddition·Normal·RebootNode"</span><span·class="p"·data-group-id="7534080896-8">}</span><span·class="p">,</span><span·class="w"> |
| 290 | ··········</span><span·class="p"·data-group-id=" | 290 | ··········</span><span·class="p"·data-group-id="7534080896-9">{</span><span·class="ss">fts</span><span·class="p">,</span><span·class="s">"http://someserver.ericsson.se/test_doc4711.pdf"</span><span·class="p"·data-group-id="7534080896-9">}</span><span·class="p"·data-group-id="7534080896-7">]</s[·...·truncated·by·diffoscope;·len:·45,·SHA:·220a939619197f8aee5e9213b985bb4d43b35d22ac4311d60517570ba3c3fa23·...·]-6">}</span><span·class="w"> |
| 291 | ····</span><span·class="p"·data-group-id=" | 291 | ····</span><span·class="p"·data-group-id="7534080896-2">]</span><span·class="p">.</span></code></pre><p><a·href=""·id="suite"></a></p><h2·id="test-suite-information-function"·class="section-heading"> |
| 292 | ··<a·href="#test-suite-information-function"·class="hover-link"> | 292 | ··<a·href="#test-suite-information-function"·class="hover-link"> |
| 293 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 293 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 294 | ··</a> | 294 | ··</a> |
| 295 | ··<span·class="text">Test·Suite·Information·Function</span> | 295 | ··<span·class="text">Test·Suite·Information·Function</span> |
| 296 | </h2> | 296 | </h2> |
| 297 | <p>Function·<a·href="ct_suite.html#c:suite/0"><code·class="inline">suite/0</code></a>·can,·for·example,·be·used·in·a·test | 297 | <p>Function·<a·href="ct_suite.html#c:suite/0"><code·class="inline">suite/0</code></a>·can,·for·example,·be·used·in·a·test |
| 298 | suite·module·to·set·a·default·<code·class="inline">timetrap</code>·value·and·to·<code·class="inline">require</code>·external | 298 | suite·module·to·set·a·default·<code·class="inline">timetrap</code>·value·and·to·<code·class="inline">require</code>·external |
| 299 | configuration·data.·If·a·test·case,·or·a·group·information·function·also | 299 | configuration·data.·If·a·test·case,·or·a·group·information·function·also |
| 300 | specifies·any·of·the·information·tags,·it·overrides·the·default·values·set·by | 300 | specifies·any·of·the·information·tags,·it·overrides·the·default·values·set·by |
| 301 | <code·class="inline">suite/0</code>.·For·details,·see | 301 | <code·class="inline">suite/0</code>.·For·details,·see |
| 302 | <a·href="write_test_chapter.html#info_function">Test·Case·Information·Function</a>·and | 302 | <a·href="write_test_chapter.html#info_function">Test·Case·Information·Function</a>·and |
| 303 | <a·href="write_test_chapter.html#test_case_groups">Test·Case·Groups</a>.</p><p>The·following·options·can·also·be·specified·with·the·suite·information·list:</p><ul><li><code·class="inline">stylesheet</code>,·see·<a·href="run_test_chapter.html#html_stylesheet">HTML·Style·Sheets</a></li><li><code·class="inline">userdata</code>,·see | 303 | <a·href="write_test_chapter.html#test_case_groups">Test·Case·Groups</a>.</p><p>The·following·options·can·also·be·specified·with·the·suite·information·list:</p><ul><li><code·class="inline">stylesheet</code>,·see·<a·href="run_test_chapter.html#html_stylesheet">HTML·Style·Sheets</a></li><li><code·class="inline">userdata</code>,·see |
| 304 | <a·href="write_test_chapter.html#info_function">Test·Case·Information·Function</a></li><li><code·class="inline">silent_connections</code>,·see | 304 | <a·href="write_test_chapter.html#info_function">Test·Case·Information·Function</a></li><li><code·class="inline">silent_connections</code>,·see |
| 305 | <a·href="run_test_chapter.html#silent_connections">Silent·Connections</a></li></ul><p>An·example·of·the·suite·information·function·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">suite</span><span·class="p"·data-group-id=" | 305 | <a·href="run_test_chapter.html#silent_connections">Silent·Connections</a></li></ul><p>An·example·of·the·suite·information·function·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">suite</span><span·class="p"·data-group-id="9804677100-1">(</span><span·class="p"·data-group-id="9804677100-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 306 | ····</span><span·class="p"·data-group-id=" | 306 | ····</span><span·class="p"·data-group-id="9804677100-2">[</span><span·class="w"> |
| 307 | ·····</span><span·class="p"·data-group-id=" | 307 | ·····</span><span·class="p"·data-group-id="9804677100-3">{</span><span·class="ss">timetrap</span><span·class="p">,</span><span·class="p"·data-group-id="9804677100-4">{</span><span·class="ss">minutes</span><span·class="p">,</span><span·class="mi">10</span><span·class="p"·data-group-id="9804677100-4"[·...·truncated·by·diffoscope;·len:·50,·SHA:·22dd75b2f4dfcc2d4c6d566b1aefffb55b9330dc266551a96e159769861ab3e5·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 308 | ·····</span><span·class="p"·data-group-id=" | 308 | ·····</span><span·class="p"·data-group-id="9804677100-5">{</span><span·class="ss">require</span><span·class="p">,</span><span·class="ss">global_names</span><span·class="p"·data-group-id="9804677100-5">}</span><span·class="p">,</span><span·class="w"> |
| 309 | ·····</span><span·class="p"·data-group-id=" | 309 | ·····</span><span·class="p"·data-group-id="9804677100-6">{</span><span·class="ss">userdata</span><span·class="p">,</span><span·class="p"·data-group-id="9804677100-7">[</span><span·class="p"·data-group-id="9804677100-8">{</span><span·class="ss">info</span><span·class="p">,</span><span·class="s">&quo[·...·truncated·by·diffoscope;·len:·201,·SHA:·acd2076eb6ad5ce72c7ad0f330ef1734eb4f21631677073dc4b2c57765046dd9·...·]-6">}</span><span·class="p">,</span><span·class="w"> |
| 310 | ·····</span><span·class="p"·data-group-id=" | 310 | ·····</span><span·class="p"·data-group-id="9804677100-9">{</span><span·class="ss">silent_connections</span><span·class="p">,</span><span·class="p"·data-group-id="9804677100-10">[</span><span·class="ss">telnet</span><span·class="p"·data-group-id="9804677100-10">]</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·11,·SHA:·4a6b4d5345ff04e2f05b7e7724013b6c817b2cdf4eb0f7f4908a291a82a258a7·...·]-9">}</span><span·class="p">,</span><span·class="w"> |
| 311 | ·····</span><span·class="p"·data-group-id=" | 311 | ·····</span><span·class="p"·data-group-id="9804677100-11">{</span><span·class="ss">stylesheet</span><span·class="p">,</span><span·class="s">"db_testing.css"</span><span·class="p"·data-group-id="9804677100-11">}</span><span·class="w"> |
| 312 | ····</span><span·class="p"·data-group-id=" | 312 | ····</span><span·class="p"·data-group-id="9804677100-2">]</span><span·class="p">.</span></code></pre><p><a·href=""·id="test_case_groups"></a></p><h2·id="test-case-groups"·class="section-heading"> |
| 313 | ··<a·href="#test-case-groups"·class="hover-link"> | 313 | ··<a·href="#test-case-groups"·class="hover-link"> |
| 314 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 314 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 315 | ··</a> | 315 | ··</a> |
| 316 | ··<span·class="text">Test·Case·Groups</span> | 316 | ··<span·class="text">Test·Case·Groups</span> |
| 317 | </h2> | 317 | </h2> |
| 318 | <p>A·test·case·group·is·a·set·of·test·cases·sharing·configuration·functions·and | 318 | <p>A·test·case·group·is·a·set·of·test·cases·sharing·configuration·functions·and |
| 319 | execution·properties.·Test·case·groups·are·defined·by·function | 319 | execution·properties.·Test·case·groups·are·defined·by·function |
| Offset 327, 63 lines modified | Offset 327, 63 lines modified | ||
| 327 | GroupName·=·atom() | 327 | GroupName·=·atom() |
| 328 | GroupsAndTestCases·=·[GroupDef·|·{group,GroupName}·|·TestCase·| | 328 | GroupsAndTestCases·=·[GroupDef·|·{group,GroupName}·|·TestCase·| |
| 329 | ·····················{testcase,TestCase,TCRepeatProps}] | 329 | ·····················{testcase,TestCase,TCRepeatProps}] |
| 330 | TestCase·=·atom() | 330 | TestCase·=·atom() |
| 331 | TCRepeatProps·=·[{repeat,N}·|·{repeat_until_ok,N}·|·{repeat_until_fail,N}]</code></pre><p><code·class="inline">GroupName</code>·is·the·name·of·the·group·and·must·be·unique·within·the·test·suite | 331 | TCRepeatProps·=·[{repeat,N}·|·{repeat_until_ok,N}·|·{repeat_until_fail,N}]</code></pre><p><code·class="inline">GroupName</code>·is·the·name·of·the·group·and·must·be·unique·within·the·test·suite |
| 332 | module.·Groups·can·be·nested,·by·including·a·group·definition·within·the | 332 | module.·Groups·can·be·nested,·by·including·a·group·definition·within·the |
| 333 | <code·class="inline">GroupsAndTestCases</code>·list·of·another·group.·<code·class="inline">Properties</code>·is·the·list·of | 333 | <code·class="inline">GroupsAndTestCases</code>·list·of·another·group.·<code·class="inline">Properties</code>·is·the·list·of |
| 334 | execution·properties·for·the·group.·The·possible·values·are·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Properties</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 334 | execution·properties·for·the·group.·The·possible·values·are·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Properties</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="5853314636-1">[</span><span·class="ss">parallel</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">sequence</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="n">Shuffle</s[·...·truncated·by·diffoscope;·len:·309,·SHA:·ce27bc8adfb6ef6bce2f6f6198bff1192f993d19b96a03716ecee12f0b88beda·...·]-1">]</span><span·class="w"> |
| 335 | </span><span·class="n">Shuffle</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">shuffle</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id=" | 335 | </span><span·class="n">Shuffle</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">shuffle</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="5853314636-3">{</span><span·class="ss">shuffle</span><span·class="p">,</span><span·class="n">Seed</span><span·class="p"·data-group-id="5853314636-3">}</span><span·class="w"> |
| 336 | </span><span·class="n">Seed</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 336 | </span><span·class="n">Seed</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="5853314636-4">{</span><span·class="nf">integer</span><span·class="p"·data-group-id="5853314636-5">(</span><span·class="p"·data-group-id="5853314636-5">)</span><span·class="p">,</span><span·class="nf">integer</span><span·class="p"·data-group-id="5853314636-[·...·truncated·by·diffoscope;·len:·266,·SHA:·2383351aec2d3ea99a6c92ebf52d11fd606d2219a12371b85f526ceb393e5b08·...·]-4">}</span><span·class="w"> |
| 337 | </span><span·class="n">GroupRepeatType</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">repeat</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">repeat_until_all_ok</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">repeat_until_all_fail</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> | 337 | </span><span·class="n">GroupRepeatType</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">repeat</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">repeat_until_all_ok</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">repeat_until_all_fail</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 338 | ··················</span><span·class="ss">repeat_until_any_ok</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">repeat_until_any_fail</span><span·class="w"> | 338 | ··················</span><span·class="ss">repeat_until_any_ok</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">repeat_until_any_fail</span><span·class="w"> |
| 339 | </span><span·class="n">N</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id=" | 339 | </span><span·class="n">N</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="5853314636-8">(</span><span·class="p"·data-group-id="5853314636-8">)</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">forever</span></code></pre><p><em>Explanations:</em></p><ul><li><p><strong><code·class="inline">parallel</code></strong>·-·<code·class="inline">Common·Test</code>·executes·all·test·cases·in·the·group·in |
| 340 | parallel.</p></li><li><p><strong><code·class="inline">sequence</code></strong>·-·The·cases·are·executed·in·a·sequence·as·described·in·section | 340 | parallel.</p></li><li><p><strong><code·class="inline">sequence</code></strong>·-·The·cases·are·executed·in·a·sequence·as·described·in·section |
| 341 | <a·href="dependencies_chapter.html#sequences">Sequences</a>·in·section·Dependencies·Between | 341 | <a·href="dependencies_chapter.html#sequences">Sequences</a>·in·section·Dependencies·Between |
| 342 | Test·Cases·and·Suites.</p></li><li><p><strong><code·class="inline">shuffle</code></strong>·-·The·cases·in·the·group·are·executed·in·random·order.</p></li><li><p><strong><code·class="inline">repeat,·repeat_until_*</code></strong>·-·Orders·<code·class="inline">Common·Test</code>·to·repeat·execution·of·all | 342 | Test·Cases·and·Suites.</p></li><li><p><strong><code·class="inline">shuffle</code></strong>·-·The·cases·in·the·group·are·executed·in·random·order.</p></li><li><p><strong><code·class="inline">repeat,·repeat_until_*</code></strong>·-·Orders·<code·class="inline">Common·Test</code>·to·repeat·execution·of·all |
| 343 | the·cases·in·the·group·a·given·number·of·times,·or·until·any,·or·all,·cases | 343 | the·cases·in·the·group·a·given·number·of·times,·or·until·any,·or·all,·cases |
| 344 | fail·or·succeed.</p></li></ul><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">groups</span><span·class="p"·data-group-id="25 | 344 | fail·or·succeed.</p></li></ul><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">groups</span><span·class="p"·data-group-id="2353137666-1">(</span><span·class="p"·data-group-id="2353137666-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="2353137666-2">[</span><span·class="p"·data-group-id="2353137666-3">{</span>[·...·truncated·by·diffoscope;·len:·495,·SHA:·4459483759c8e6a5a2754a0a35b3e2d1eb4b76e63501131d5ef962a8164be367·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 345 | ·············</span><span·class="p"·data-group-id="25 | 345 | ·············</span><span·class="p"·data-group-id="2353137666-6">{</span><span·class="ss">group2</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2353137666-7">[</span><span·class="ss">shuffle</span><span·class="p">,</span><span·class="ss">sequence</span><span·class="p"·d[·...·truncated·by·diffoscope;·len:·422,·SHA:·94422a9091ed01f943274975a1354bf1070161f969494106698680ed1b43437b·...·]-2">]</span><span·class="p">.</span></code></pre><p>To·specify·in·which·order·groups·are·to·be·executed·(also·with·respect·to·test |
| 346 | cases·that·are·not·part·of·any·group),·add·tuples·on·the·form | 346 | cases·that·are·not·part·of·any·group),·add·tuples·on·the·form |
| 347 | <code·class="inline">{group,GroupName}</code>·to·the·<code·class="inline">all/0</code>·list.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">all</span><span·class="p"·data-group-id=" | 347 | <code·class="inline">{group,GroupName}</code>·to·the·<code·class="inline">all/0</code>·list.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">all</span><span·class="p"·data-group-id="3630599542-1">(</span><span·class="p"·data-group-id="3630599542-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="3630599542-2">[</span><span·class="ss">testcase1</span><span·class="p">,</[·...·truncated·by·diffoscope;·len:·1055,·SHA:·c818a42872999b6db17a69aa0f51f41f4c3380da2e333b9a75030851755bdf2a·...·]-2">]</span><span·class="p">.</span></code></pre><p>Execution·properties·with·a·group·tuple·in·<code·class="inline">all/0</code>: |
| 348 | <code·class="inline">{group,GroupName,Properties}</code>·can·also·be·specified.·These·properties·override | 348 | <code·class="inline">{group,GroupName,Properties}</code>·can·also·be·specified.·These·properties·override |
| 349 | those·specified·in·the·group·definition·(see·<code·class="inline">groups/0</code>·earlier).·This·way,·the | 349 | those·specified·in·the·group·definition·(see·<code·class="inline">groups/0</code>·earlier).·This·way,·the |
| 350 | same·set·of·tests·can·be·run,·but·with·different·properties,·without·having·to | 350 | same·set·of·tests·can·be·run,·but·with·different·properties,·without·having·to |
| 351 | make·copies·of·the·group·definition·in·question.</p><p>If·a·group·contains·subgroups,·the·execution·properties·for·these·can·also·be | 351 | make·copies·of·the·group·definition·in·question.</p><p>If·a·group·contains·subgroups,·the·execution·properties·for·these·can·also·be |
| 352 | specified·in·the·group·tuple:·<code·class="inline">{group,GroupName,Properties,SubGroups}</code>·Where, | 352 | specified·in·the·group·tuple:·<code·class="inline">{group,GroupName,Properties,SubGroups}</code>·Where, |
| 353 | <code·class="inline">SubGroups</code>·is·a·list·of·tuples,·<code·class="inline">{GroupName,Properties}</code>·or | 353 | <code·class="inline">SubGroups</code>·is·a·list·of·tuples,·<code·class="inline">{GroupName,Properties}</code>·or |
| 354 | <code·class="inline">{GroupName,Properties,SubGroups}</code>·representing·the·subgroups.·Any·subgroups | 354 | <code·class="inline">{GroupName,Properties,SubGroups}</code>·representing·the·subgroups.·Any·subgroups |
| 355 | defined·in·<code·class="inline">groups/0</code>·for·a·group,·that·are·not·specified·in·the·<code·class="inline">SubGroups</code> | 355 | defined·in·<code·class="inline">groups/0</code>·for·a·group,·that·are·not·specified·in·the·<code·class="inline">SubGroups</code> |
| 356 | list,·executes·with·their·predefined·properties.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">groups</span><span·class="p"·data-group-id="3577202595-1">(</span><span·class="p"·data-group-id="3577202595-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="3577202595-2">[</span><span·class="p"·data-group-id="3577202595-3">{</span><span·class="ss">tests1</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3577202595-4">[</span><span·class="p"·data-group-id="3577202595-4">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3577202595-5">[</span><span·class="p"·data-group-id="3577202595-6">{</span><span·class="ss">tests2</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3577202595-7">[</span><span·class="p"·data-group-id="3577202595-7">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3577202595-8">[</span><span·class="ss">t2a</span><span·class="p">,</span><span·class="ss">t2b</span><span·class="p"·data-group-id="3577202595-8">]</span><span·class="p"·data-group-id="3577202595-6">}</span><span·class="p">,</span><span·class="w"> | ||
| 357 | 356 | list,·executes·with·their·predefined·properties.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">groups</span><span·class="p"·data-group-id="9120619973-1">(</span><span·class="p"·data-group-id="9120619973-1">)</s[·...·truncated·by·diffoscope;·len:·1033,·SHA:·d7c8fbb7d5591479d6214b0525f72666e6390a8890d76d34c48ef38f01668a11·...·] | |
| 357 | ··························</span><span·class="p"·data-group-id="9120619973-9">{</span><span·class="ss">tests3</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9120619973-10">[</span><span·class="p"·data-group-id="9120619973-10">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9120619973-11">[</span><span·class="ss">t31</span><span·class="p">,</span><span·class="ss">t3b</span><span·class="p"·data-group-id="9120619973-11">]</span><span·class="p"·data-group-id="9120619973-9">}</span><span·class="p"·data-group-id="9120619973-5">]</span><span·class="p"·data-group-id="9120619973-3">}</span><span·class="p"·data-group-id="9120619973-2">]</span><span·class="p">.</span></code></pre><p>To·execute·group·<code·class="inline">tests1</code>·twice·with·different·properties·for·<code·class="inline">tests2</code>·each | ||
| 358 | time:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">all</span><span·class="p"·data-group-id=" | 358 | time:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">all</span><span·class="p"·data-group-id="5471267733-1">(</span><span·class="p"·data-group-id="5471267733-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 359 | ···</span><span·class="p"·data-group-id=" | 359 | ···</span><span·class="p"·data-group-id="5471267733-2">[</span><span·class="p"·data-group-id="5471267733-3">{</span><span·class="ss">group</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">tests1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">default</[·...·truncated·by·diffoscope;·len:·522,·SHA:·2ce094ad6815664ab86c39e1056ffe02276ded0ee53272e34edbc69d5f630474·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 360 | ····</span><span·class="p"·data-group-id="2390524289-7">{</span><span·class="ss">group</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">tests1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">default</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2390524289-8">[</span><span·class="p"·data-group-id="2390524289-9">{</span><span·class="ss">tests2</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2390524289-10">[</span><span·class="ss">shuffle</span><span·class="p">,</span><span·class="p"·data-group-id="2390524289-11">{</span><span·class="ss">repeat</span><span·class="p">,</span><span·class="mi">10</span><span·class="p"·data-group-id="2390524289-11">}</span><span·class="p"·data-group-id="2390524289-10">]</span><span·class="p"·data-group-id="2390524289-9">}</span><span·class="p"·data-group-id="2390524289-8">]</span><span·class="p"·data-group-id="2390524289-7">}</span><span·class="p"·data-group-id="2390524289-2">]</span><span·class="p">.</span></code></pre><p>This·is·equivalent·to·the·following·specification:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">all</span><span·class="p"·data-group-id="9552719678-1">(</span><span·class="p"·data-group-id="9552719678-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | ||
| 361 | ···</span><span·class="p"·data-group-id=" | 360 | ····</span><span·class="p"·data-group-id="5471267733-7">{</span><span·class="ss">group</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">tests1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">default</span><span·cla[·...·truncated·by·diffoscope;·len:·1106,·SHA:·0acf7248c886262fb97306544d3122023e79e5545aec0e50046a3eef51c7f7cf·...·]</span><span·class="w"> |
| 361 | ···</span><span·class="p"·data-group-id="6356328755-2">[</span><span·class="p"·data-group-id="6356328755-3">{</span><span·class="ss">group</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">tests1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">default</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6356328755-4">[</span><span·class="p"·data-group-id="6356328755-5">{</span><span·class="ss">tests2</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6356328755-6">[</span><span·class="ss">parallel</span><span·class="p"·data-group-id="6356328755-6">]</span><span·class="p"·data-group-id="6356328755-5">}</span><span·class="p">,</span><span·class="w"> | ||
| 362 | ······························</span><span·class="p"·data-group-id=" | 362 | ······························</span><span·class="p"·data-group-id="6356328755-7">{</span><span·class="ss">tests3</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">default</span><span·class="p"·data-group-id="6356328755-7">}</span><span·class="p"·data-group-id="6356328755-4">]</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·22,·SHA:·ce3528838ebb1b5185febb167c22c3263e9d6d316d70162b81c2baa8c9faff1a·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 363 | ····</span><span·class="p"·data-group-id=" | 363 | ····</span><span·class="p"·data-group-id="6356328755-8">{</span><span·class="ss">group</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">tests1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">default</span><span·class="p">,</span><span·class="w">·</span>[·...·truncated·by·diffoscope;·len:·577,·SHA:·6d200df3f7a2641cf21e8e32bbb774c9d8a94a644f0605af2bcb2dbc345fd863·...·]-10">}</span><span·class="p">,</span><span·class="w"> |
| 364 | ······························</span><span·class="p"·data-group-id=" | 364 | ······························</span><span·class="p"·data-group-id="6356328755-13">{</span><span·class="ss">tests3</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">default</span><span·class="p"·data-group-id="6356328755-13">}</span><span·class="p"·data-group-id="6356328755-9">]</span><span·class="p"·d[·...·truncated·by·diffoscope;·len:·77,·SHA:·198f21403a302d03cd83b2d0ab129a7f309718c5c5ec9a023c95a33a72faf8a9·...·]-2">]</span><span·class="p">.</span></code></pre><p>Value·<code·class="inline">default</code>·states·that·the·predefined·properties·are·to·be·used.</p><p>The·following·example·shows·how·to·override·properties·in·a·scenario·with·deeply |
| 365 | nested·groups:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">groups</span><span·class="p"·data-group-id=" | 365 | nested·groups:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">groups</span><span·class="p"·data-group-id="1710174405-1">(</span><span·class="p"·data-group-id="1710174405-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 366 | ···</span><span·class="p"·data-group-id="0874524560-2">[</span><span·class="p"·data-group-id="0874524560-3">{</span><span·class="ss">tests1</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0874524560-4">[</span><span·class="p"·data-group-id="0874524560-4">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0874524560-5">[</span><span·class="p"·data-group-id="0874524560-6">{</span><span·class="ss">group</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">tests2</span><span·class="p"·data-group-id="0874524560-6">}</span><span·class="p"·data-group-id="0874524560-5">]</span><span·class="p"·data-group-id="0874524560-3">}</span><span·class="p">,</span><span·class="w"> | ||
| 367 | ··· | 366 | ···</span><span·class="p"·data-group-id="1710174405-2">[</span><span·class="p"·data-group-id="1710174405-3">{</span><span·class="ss">tests1</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1710174405-4">[</span><span·class=[·...·truncated·by·diffoscope;·len:·451,·SHA:·e3fd07d6f01f9bcd2fe375be15e823b04c276d08c0fe48eedccefd2f39ddb7f5·...·]">}</span><span·class="p">,</span><span·class="w"> |
| 367 | ····</span><span·class="p"·data-group-id="1710174405-7">{</span><span·class="ss">tests2</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1710174405-8">[</span><span·class="p"·data-group-id="1710174405-8">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1710174405-9">[</span><span·class="p"·data-group-id="1710174405-10">{</span><span·class="ss">group</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">tests3</span><span·class="p"·data-group-id="1710174405-10">}</span><span·class="p"·data-group-id="1710174405-9">]</span><span·class="p"·data-group-id="1710174405-7">}</span><span·class="p">,</span><span·class="w"> | ||
| 368 | ····</span><span·class="p"·data-group-id=" | 368 | ····</span><span·class="p"·data-group-id="1710174405-11">{</span><span·class="ss">tests3</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1710174405-12">[</span><span·class="p"·data-group-id="1710174405-13">{</span><span·class="ss">repeat</span><span·class="p">,[·...·truncated·by·diffoscope;·len:·520,·SHA:·7a5b304a305be964f4f84734028dfd47c06536a8e6f7ae2fcadc2a61f0110d37·...·]-2">]</span><span·class="p">.</span><span·class="w"> |
| 369 | </span><span·class="nf">all</span><span·class="p"·data-group-id=" | 369 | </span><span·class="nf">all</span><span·class="p"·data-group-id="1710174405-15">(</span><span·class="p"·data-group-id="1710174405-15">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 370 | ···</span><span·class="p"·data-group-id=" | 370 | ···</span><span·class="p"·data-group-id="1710174405-16">[</span><span·class="p"·data-group-id="1710174405-17">{</span><span·class="ss">group</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">tests1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">default</span><span·class="p">,</span><span·class="w"> |
| 371 | ·····</span><span·class="p"·data-group-id=" | 371 | ·····</span><span·class="p"·data-group-id="1710174405-18">[</span><span·class="p"·data-group-id="1710174405-19">{</span><span·class="ss">tests2</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">default</span><span·class="p">,</span><span·class="w"> |
| 372 | ·······</span><span·class="p"·data-group-id=" | 372 | ·······</span><span·class="p"·data-group-id="1710174405-20">[</span><span·class="p"·data-group-id="1710174405-21">{</span><span·class="ss">tests3</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1710174405-22">[</span><span·class="ss">parallel</span><span·class="p"[·...·truncated·by·diffoscope;·len:·563,·SHA:·6003c0b6902692268cc7b808fd8b6ac24b284fd10ef9c1211348d53a1a1bfd49·...·]-16">]</span><span·class="p">.</span></code></pre><p>For·ease·of·readability,·all·syntax·definitions·can·be·replaced·by·a·function |
| 373 | call·whose·return·value·should·match·the·expected·syntax·case.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">all</span><span·class="p"·data-group-id=" | 373 | call·whose·return·value·should·match·the·expected·syntax·case.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">all</span><span·class="p"·data-group-id="5318174933-1">(</span><span·class="p"·data-group-id="5318174933-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 374 | ···</span><span·class="p"·data-group-id=" | 374 | ···</span><span·class="p"·data-group-id="5318174933-2">[</span><span·class="p"·data-group-id="5318174933-3">{</span><span·class="ss">group</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">tests1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">default</[·...·truncated·by·diffoscope;·len:·234,·SHA:·92fa7006d9c7a439007b9d6a4dc02d4957a427980390faaae459276606b0e5f1·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 375 | ····</span><span·class="p"·data-group-id=" | 375 | ····</span><span·class="p"·data-group-id="5318174933-5">{</span><span·class="ss">group</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">tests1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">default</span><span·class="p">,</span><span·class="w">·</span>[·...·truncated·by·diffoscope;·len:·183,·SHA:·945cf2c796211cb52ea65ac9e6e74421bdfdaf40a49ffafcabccad288db12335·...·]-7">)</span><span·class="p">,</span><span·class="w"> |
| 376 | ······························</span><span·class="p"·data-group-id=" | 376 | ······························</span><span·class="p"·data-group-id="5318174933-8">{</span><span·class="ss">tests3</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">default</span><span·class="p"·data-group-id="5318174933-8">}</span><span·class="p"·data-group-id="5318174933-6">]</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·75,·SHA:·71421319ada6a1ea12a976f07b09260d0d02f13b72368e282f40ca01070b0f47·...·]-2">]</span><span·class="p">.</span><span·class="w"> |
| 377 | </span><span·class="nf">test_cases</span><span·class="p"·data-group-id=" | 377 | </span><span·class="nf">test_cases</span><span·class="p"·data-group-id="5318174933-9">(</span><span·class="p"·data-group-id="5318174933-9">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 378 | ···</span><span·class="p"·data-group-id=" | 378 | ···</span><span·class="p"·data-group-id="5318174933-10">[</span><span·class="p"·data-group-id="5318174933-11">{</span><span·class="ss">tests2</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5318174933-12">[</span><span·class="ss">parallel</span><span·class="p"[·...·truncated·by·diffoscope;·len:·399,·SHA:·6106672815abbea8e5365955b7279ecc4738a060d1264420b28938e873dc3866·...·]-10">]</span><span·class="p">.</span><span·class="w"> |
| 379 | </span><span·class="nf">shuffle_test</span><span·class="p"·data-group-id=" | 379 | </span><span·class="nf">shuffle_test</span><span·class="p"·data-group-id="5318174933-14">(</span><span·class="p"·data-group-id="5318174933-14">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 380 | ···</span><span·class="p"·data-group-id=" | 380 | ···</span><span·class="p"·data-group-id="5318174933-15">{</span><span·class="ss">tests2</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5318174933-16">[</span><span·class="ss">shuffle</span><span·class="p">,</span><span·class="p"·data-group-id="5318174933-17">[·...·truncated·by·diffoscope;·len:·237,·SHA:·88ac1b344a80213db4f8030e15d375c5da5ec9aa5db7c9259798e38cae20ff91·...·]-15">}</span><span·class="p">.</span></code></pre><p>The·described·syntax·can·also·be·used·in·test·specifications·to·change·group |
| 381 | properties·at·the·time·of·execution,·without·having·to·edit·the·test·suite.·For | 381 | properties·at·the·time·of·execution,·without·having·to·edit·the·test·suite.·For |
| 382 | more·information,·see·section | 382 | more·information,·see·section |
| 383 | <a·href="run_test_chapter.html#test_specifications">Test·Specifications</a>·in·section | 383 | <a·href="run_test_chapter.html#test_specifications">Test·Specifications</a>·in·section |
| 384 | Running·Tests·and·Analyzing·Results.</p><p>As·illustrated,·properties·can·be·combined.·If,·for·example,·<code·class="inline">shuffle</code>, | 384 | Running·Tests·and·Analyzing·Results.</p><p>As·illustrated,·properties·can·be·combined.·If,·for·example,·<code·class="inline">shuffle</code>, |
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| 184 | </span><span·class="nc">landing_pad_block</span><span·class="p">:</span><span·class="w"> | 184 | </span><span·class="nc">landing_pad_block</span><span·class="p">:</span><span·class="w"> |
| 185 | ···</span><span·class="p">@</span><span·class="ss">aggregate</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">landingpad</span><span·class="w">·</span><span·class="k">catch</span><span·class="p">,</span><span·class="w">·</span><span·class="p">@</span><span·class="ss">tag</span><span·class="w"> | 185 | ···</span><span·class="p">@</span><span·class="ss">aggregate</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">landingpad</span><span·class="w">·</span><span·class="k">catch</span><span·class="p">,</span><span·class="w">·</span><span·class="p">@</span><span·class="ss">tag</span><span·class="w"> |
| 186 | ···</span><span·class="p">@</span><span·class="ss">catched_val</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">extract</span><span·class="w">·</span><span·class="p">@</span><span·class="ss">ssa_agg</span><span·class="p">,</span><span·class="w">·</span><span·class="err">`</span><span·class="mi">0</span><span·class="err">`</span><span·class="w"> | 186 | ···</span><span·class="p">@</span><span·class="ss">catched_val</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">extract</span><span·class="w">·</span><span·class="p">@</span><span·class="ss">ssa_agg</span><span·class="p">,</span><span·class="w">·</span><span·class="err">`</span><span·class="mi">0</span><span·class="err">`</span><span·class="w"> |
| 187 | ···</span><span·class="ss">br</span><span·class="w">·</span><span·class="err">^</span><span·class="ss">common_end_of_catch</span><span·class="w"> | 187 | ···</span><span·class="ss">br</span><span·class="w">·</span><span·class="err">^</span><span·class="ss">common_end_of_catch</span><span·class="w"> |
| 188 | </span><span·class="nc">common_end_of_catch</span><span·class="p">:</span><span·class="w"> | 188 | </span><span·class="nc">common_end_of_catch</span><span·class="p">:</span><span·class="w"> |
| 189 | ··</span><span·class="p">@</span><span·class="ss">tmp</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">phi</span><span·class="w">·</span><span·class="p"·data-group-id=" | 189 | ··</span><span·class="p">@</span><span·class="ss">tmp</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">phi</span><span·class="w">·</span><span·class="p"·data-group-id="3584349152-1">{</span><span·class="w">·</span><span·class="p">@</span><span·class="ss">catched_val</span><span·class="p">,</span><span·class="w">·</span><span·class="err">^</span><span·class="ss">landing_pad_block</span><span·class="w">·</span><span·class=[·...·truncated·by·diffoscope;·len:·29,·SHA:·6f1a9b4c5c96cd2f13bf834bc160612f289ce14b8f59427faf1d067e19d34163·...·]-1">}</span><span·class="p">,</span><span·class="w"> |
| 190 | ·············</span><span·class="p"·data-group-id=" | 190 | ·············</span><span·class="p"·data-group-id="3584349152-2">{</span><span·class="w">·</span><span·class="p">@</span><span·class="ss">successful_result</span><span·class="p">,</span><span·class="w">·</span><span·class="err">^</span><span·class="ss">protected_blockN</span><span·class="w">·</span><span·c[·...·truncated·by·diffoscope;·len:·34,·SHA:·96e6031f70cbfe7c61dc0ce2118fa315072373acc976f012da1722da279298b3·...·]-2">}</span><span·class="w"> |
| 191 | ··</span><span·class="p">@</span><span·class="ss">result_of_catch_expr</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">catch_end</span><span·class="w">·</span><span·class="p">@</span><span·class="ss">tag</span><span·class="p">,</span><span·class="w">·</span><span·class="p">@</span><span·class="ss">tmp</span></code></pre><p>Just·as·for·a·<code·class="inline">try</code>-<code·class="inline">catch</code>·expression·all·code·that·can·cause·an | 191 | ··</span><span·class="p">@</span><span·class="ss">result_of_catch_expr</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">catch_end</span><span·class="w">·</span><span·class="p">@</span><span·class="ss">tag</span><span·class="p">,</span><span·class="w">·</span><span·class="p">@</span><span·class="ss">tmp</span></code></pre><p>Just·as·for·a·<code·class="inline">try</code>-<code·class="inline">catch</code>·expression·all·code·that·can·cause·an |
| 192 | exception·in·one·of·the·protected·blocks·must·have·explicit·control | 192 | exception·in·one·of·the·protected·blocks·must·have·explicit·control |
| 193 | flow·edges·to·the·landing·pad·block.</p><h2·id="exception-re-issuing"·class="section-heading"> | 193 | flow·edges·to·the·landing·pad·block.</p><h2·id="exception-re-issuing"·class="section-heading"> |
| 194 | ··<a·href="#exception-re-issuing"·class="hover-link"> | 194 | ··<a·href="#exception-re-issuing"·class="hover-link"> |
| 195 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 195 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 196 | ··</a> | 196 | ··</a> |
| 197 | ··<span·class="text">Exception·Re-issuing</span> | 197 | ··<span·class="text">Exception·Re-issuing</span> |
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| 230 | proven·to·always·succeed·or·fail.</p></li></ul><h2·id="variable-naming"·class="section-heading"> | 230 | proven·to·always·succeed·or·fail.</p></li></ul><h2·id="variable-naming"·class="section-heading"> |
| 231 | ··<a·href="#variable-naming"·class="hover-link"> | 231 | ··<a·href="#variable-naming"·class="hover-link"> |
| 232 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 232 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 233 | ··</a> | 233 | ··</a> |
| 234 | ··<span·class="text">Variable·Naming</span> | 234 | ··<span·class="text">Variable·Naming</span> |
| 235 | </h2> | 235 | </h2> |
| 236 | <p>A·variable·name·in·BEAM·SSA·is·either·an·atom·or·a·non-negative | 236 | <p>A·variable·name·in·BEAM·SSA·is·either·an·atom·or·a·non-negative |
| 237 | integer:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">atom</span><span·class="p"·data-group-id=" | 237 | integer:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">atom</span><span·class="p"·data-group-id="8330799284-1">(</span><span·class="p"·data-group-id="8330799284-1">)</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="nf">non_neg_integer</span><span·class="p"·data-group-id="8330799284-2">(</span><span·class="p"·d[·...·truncated·by·diffoscope;·len:·24,·SHA:·7ebc5fb2bbdc986bb9b1ea43f413282699fa268f01f5c9256b8686697d638909·...·]-2">)</span></code></pre><p>In·order·to·generate·fresh·unused·variable·names,·all·compiler |
| 238 | transforms·maintain·a·counter,·the·<code·class="inline">cnt</code>-field·in·the·<code·class="inline">b_function</code>·and | 238 | transforms·maintain·a·counter,·the·<code·class="inline">cnt</code>-field·in·the·<code·class="inline">b_function</code>·and |
| 239 | <code·class="inline">opt_st</code>·records,·which·is·incremented·each·time·a·new·variable·or | 239 | <code·class="inline">opt_st</code>·records,·which·is·incremented·each·time·a·new·variable·or |
| 240 | label·is·created.·In·the·following·description·the·value·of·the | 240 | label·is·created.·In·the·following·description·the·value·of·the |
| 241 | <code·class="inline">cnt</code>-field·is·called·<code·class="inline">Cnt</code>.·The·<code·class="inline">Cnt</code>·value·is·guaranteed·to·never | 241 | <code·class="inline">cnt</code>-field·is·called·<code·class="inline">Cnt</code>.·The·<code·class="inline">Cnt</code>·value·is·guaranteed·to·never |
| 242 | clash·with·a·previously·defined·variable·name.·Therefore,·value·of | 242 | clash·with·a·previously·defined·variable·name.·Therefore,·value·of |
| 243 | <code·class="inline">Cnt</code>·can·directly·be·used·as·a·variable·name·in·the·SSA·passes.</p><p>Note·that·the·rules·were·more·complicated·before·Erlang/OTP·27,·because | 243 | <code·class="inline">Cnt</code>·can·directly·be·used·as·a·variable·name·in·the·SSA·passes.</p><p>Note·that·the·rules·were·more·complicated·before·Erlang/OTP·27,·because |
| 244 | the·<code·class="inline">Cnt</code>·value·could·clash·with·other·variables.</p> | 244 | the·<code·class="inline">Cnt</code>·value·could·clash·with·other·variables.</p> |
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| 149 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 149 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 150 | ··</a> | 150 | ··</a> |
| 151 | ··<span·class="text">Order·of·Compiler·Options</span> | 151 | ··<span·class="text">Order·of·Compiler·Options</span> |
| 152 | </h2> | 152 | </h2> |
| 153 | <p>Options·given·in·the·<code·class="inline">compile()</code>·attribute·in·the·source·code·take | 153 | <p>Options·given·in·the·<code·class="inline">compile()</code>·attribute·in·the·source·code·take |
| 154 | precedence·over·options·given·to·the·compiler,·which·in·turn·take | 154 | precedence·over·options·given·to·the·compiler,·which·in·turn·take |
| 155 | precedence·over·options·given·in·the·environment.</p><p>A·later·compiler·option·takes·precedence·over·an·earlier·one·in·the | 155 | precedence·over·options·given·in·the·environment.</p><p>A·later·compiler·option·takes·precedence·over·an·earlier·one·in·the |
| 156 | option·list.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">compile</span><span·class="p">:</span><span·class="nf">file</span><span·class="p"·data-group-id=" | 156 | option·list.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">compile</span><span·class="p">:</span><span·class="nf">file</span><span·class="p"·data-group-id="3154040598-1">(</span><span·class="ss">something</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3154040598-2">[</span><span·class="ss">nowarn_missing_spec</span><span·class="p">,</span><span·class="ss">warn_missing_spe[·...·truncated·by·diffoscope;·len:·101,·SHA:·b2967fec33fa99e0e8f7f5356de5b53db9312db034e4b9efab3d578a13d0fece·...·]8-1">)</span><span·class="p">.</span></code></pre><p>Warnings·will·be·emitted·for·functions·without·specifications,·unless |
| 157 | the·source·code·for·module·<code·class="inline">something</code>·contains·a·<code·class="inline">compile(nowarn_missing_spec)</code> | 157 | the·source·code·for·module·<code·class="inline">something</code>·contains·a·<code·class="inline">compile(nowarn_missing_spec)</code> |
| 158 | attribute.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Change</h4><p>In·Erlang/OTP·26·and·earlier,·the·option·order·was·the·opposite·of·what | 158 | attribute.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Change</h4><p>In·Erlang/OTP·26·and·earlier,·the·option·order·was·the·opposite·of·what |
| 159 | is·described·here.</p></section><h2·id="module-inlining"·class="section-heading"> | 159 | is·described·here.</p></section><h2·id="module-inlining"·class="section-heading"> |
| 160 | ··<a·href="#module-inlining"·class="hover-link"> | 160 | ··<a·href="#module-inlining"·class="hover-link"> |
| 161 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 161 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 162 | ··</a> | 162 | ··</a> |
| 163 | ··<span·class="text">Inlining</span> | 163 | ··<span·class="text">Inlining</span> |
| Offset 173, 22 lines modified | Offset 173, 22 lines modified | ||
| 173 | all·calls·to·the·function·are·inlined.</p><p>Inlining·does·not·necessarily·improve·running·time.·For·example,·inlining·can | 173 | all·calls·to·the·function·are·inlined.</p><p>Inlining·does·not·necessarily·improve·running·time.·For·example,·inlining·can |
| 174 | increase·Beam·stack·use,·which·probably·is·detrimental·to·performance·for | 174 | increase·Beam·stack·use,·which·probably·is·detrimental·to·performance·for |
| 175 | recursive·functions.</p><p>Inlining·is·never·default.·It·must·be·explicitly·enabled·with·a·compiler·option | 175 | recursive·functions.</p><p>Inlining·is·never·default.·It·must·be·explicitly·enabled·with·a·compiler·option |
| 176 | or·a·<code·class="inline">-compile()</code>·attribute·in·the·source·module.</p><p>To·enable·inlining,·either·use·the·option·<code·class="inline">inline</code>·to·let·the·compiler·decide | 176 | or·a·<code·class="inline">-compile()</code>·attribute·in·the·source·module.</p><p>To·enable·inlining,·either·use·the·option·<code·class="inline">inline</code>·to·let·the·compiler·decide |
| 177 | which·functions·to·inline,·or·<code·class="inline">{inline,[{Name,Arity},...]}</code>·to·have·the·compiler | 177 | which·functions·to·inline,·or·<code·class="inline">{inline,[{Name,Arity},...]}</code>·to·have·the·compiler |
| 178 | inline·all·calls·to·the·given·functions.·If·the·option·is·given·inside·a | 178 | inline·all·calls·to·the·given·functions.·If·the·option·is·given·inside·a |
| 179 | <code·class="inline">compile</code>·directive·in·an·Erlang·module,·<code·class="inline">{Name,Arity}</code>·can·be·written·as | 179 | <code·class="inline">compile</code>·directive·in·an·Erlang·module,·<code·class="inline">{Name,Arity}</code>·can·be·written·as |
| 180 | <code·class="inline">Name/Arity</code>.</p><p>Example·of·explicit·inlining:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">compile</span><span·class="p"·data-group-id=" | 180 | <code·class="inline">Name/Arity</code>.</p><p>Example·of·explicit·inlining:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">compile</span><span·class="p"·data-group-id="2423074183-1">(</span><span·class="p"·data-group-id="2423074183-2">{</span><span·class="ss">inline</span><span·class="p">,</span><span·class="p"·data-group-id="2423074183-3">[</span><span·class="ss">pi</span><span·class="p">/</span><span·class="mi">0</span[·...·truncated·by·diffoscope;·len:·148,·SHA:·cf31ab29672935ba118ab66c42b75c71a1160d70ee397db560da9d3c81654e46·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 181 | </span><span·class="nf">pi</span><span·class="p"·data-group-id=" | 181 | </span><span·class="nf">pi</span><span·class="p"·data-group-id="2423074183-4">(</span><span·class="p"·data-group-id="2423074183-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="mf">3.1416</span><span·class="p">.</span></code></pre><p>Example·of·implicit·inlining:</p><pre><code·class="text">-compile(inline).</code></pre><p>The·option·<code·class="inline">{inline_size,Size}</code>·controls·how·large·functions·that·are·allowed·to |
| 182 | be·inlined.·Default·is·<code·class="inline">24</code>,·which·keeps·the·size·of·the·inlined·code·roughly | 182 | be·inlined.·Default·is·<code·class="inline">24</code>,·which·keeps·the·size·of·the·inlined·code·roughly |
| 183 | the·same·as·the·un-inlined·version·(only·relatively·small·functions·are | 183 | the·same·as·the·un-inlined·version·(only·relatively·small·functions·are |
| 184 | inlined).</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·Aggressive·inlining·-·will·increase·code·size.</span><span·class="w"> | 184 | inlined).</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·Aggressive·inlining·-·will·increase·code·size.</span><span·class="w"> |
| 185 | </span><span·class="p">-</span><span·class="na">compile</span><span·class="p"·data-group-id="7 | 185 | </span><span·class="p">-</span><span·class="na">compile</span><span·class="p"·data-group-id="4795643479-1">(</span><span·class="ss">inline</span><span·class="p"·data-group-id="4795643479-1">)</span><span·class="p">.</span><span·class="w"> |
| 186 | </span><span·class="p">-</span><span·class="na">compile</span><span·class="p"·data-group-id="7 | 186 | </span><span·class="p">-</span><span·class="na">compile</span><span·class="p"·data-group-id="4795643479-2">(</span><span·class="p"·data-group-id="4795643479-3">{</span><span·class="ss">inline_size</span><span·class="p">,</span><span·class="mi">100</span><span·class="p"·data-group-id="4795643479-3">}</span><span·class="p"·data-group-id="4795643479-2">)</span><span·class="p">.</span></code></pre><h2·id="module-inlining-of-list-functions"·class="section-heading"> |
| 187 | ··<a·href="#module-inlining-of-list-functions"·class="hover-link"> | 187 | ··<a·href="#module-inlining-of-list-functions"·class="hover-link"> |
| 188 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 188 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 189 | ··</a> | 189 | ··</a> |
| 190 | ··<span·class="text">Inlining·of·List·Functions</span> | 190 | ··<span·class="text">Inlining·of·List·Functions</span> |
| 191 | </h2> | 191 | </h2> |
| 192 | <p>The·compiler·can·also·inline·various·list·manipulation·functions·from·the·module | 192 | <p>The·compiler·can·also·inline·various·list·manipulation·functions·from·the·module |
| 193 | <code·class="inline">list</code>·in·STDLIB.</p><p>This·feature·must·be·explicitly·enabled·with·a·compiler·option·or·a·<code·class="inline">-compile()</code> | 193 | <code·class="inline">list</code>·in·STDLIB.</p><p>This·feature·must·be·explicitly·enabled·with·a·compiler·option·or·a·<code·class="inline">-compile()</code> |
| Offset 900, 18 lines modified | Offset 900, 18 lines modified | ||
| 900 | features.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>This·option·has·no·effect·when·used·in·a·<code·class="inline">-compile(..)</code>·attribute.·Instead, | 900 | features.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>This·option·has·no·effect·when·used·in·a·<code·class="inline">-compile(..)</code>·attribute.·Instead, |
| 901 | the·<code·class="inline">-feature(..)</code>·directive·(described·next)·should·be·used.</p><p><a·href=""·id="feature-directive"></a>·A·feature·can·also·be·enabled·(disabled)·using | 901 | the·<code·class="inline">-feature(..)</code>·directive·(described·next)·should·be·used.</p><p><a·href=""·id="feature-directive"></a>·A·feature·can·also·be·enabled·(disabled)·using |
| 902 | the·<code·class="inline">-feature(Feature,·enable·|·disable).</code>·module·directive.·Note·that·this | 902 | the·<code·class="inline">-feature(Feature,·enable·|·disable).</code>·module·directive.·Note·that·this |
| 903 | directive·can·only·be·present·in·a·prefix·of·the·file,·before·exports·and | 903 | directive·can·only·be·present·in·a·prefix·of·the·file,·before·exports·and |
| 904 | function·definitions.·This·is·the·preferred·method·of·enabling·and·disabling | 904 | function·definitions.·This·is·the·preferred·method·of·enabling·and·disabling |
| 905 | features,·since·it·is·a·local·property·of·a·module.</p></section></li><li><p><strong><code·class="inline">makedep</code></strong>·-·Produces·a·Makefile·rule·to·track·headers·dependencies.·No | 905 | features,·since·it·is·a·local·property·of·a·module.</p></section></li><li><p><strong><code·class="inline">makedep</code></strong>·-·Produces·a·Makefile·rule·to·track·headers·dependencies.·No |
| 906 | object·file·is·produced.</p><p>By·default,·this·rule·is·written·to·<code·class="inline"><File>.Pbeam</code>.·However,·if·option | 906 | object·file·is·produced.</p><p>By·default,·this·rule·is·written·to·<code·class="inline"><File>.Pbeam</code>.·However,·if·option |
| 907 | <code·class="inline">binary</code>·is·set,·nothing·is·written·and·the·rule·is·returned·in·<code·class="inline">Binary</code>.</p><p>The·output·will·be·encoded·in·UTF-8.</p><p>For·example,·if·you·have·the·following·module:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 907 | <code·class="inline">binary</code>·is·set,·nothing·is·written·and·the·rule·is·returned·in·<code·class="inline">Binary</code>.</p><p>The·output·will·be·encoded·in·UTF-8.</p><p>For·example,·if·you·have·the·following·module:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="0208170274-1">(</span><span·class="ss">module</span><span·class="p"·data-group-id="0208170274-1">)</span><span·class="p">.</span><span·class="w"> |
| 908 | </span><span·class="w"> | 908 | </span><span·class="w"> |
| 909 | </span><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id=" | 909 | </span><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="0208170274-2">(</span><span·class="s">"eunit/include/eunit.hrl"</span><span·class="p"·data-group-id="0208170274-2">)</span><span·class="p">.</span><span·class="w"> |
| 910 | </span><span·class="p">-</span><span·class="na">include</span><span·class="p"·data-group-id=" | 910 | </span><span·class="p">-</span><span·class="na">include</span><span·class="p"·data-group-id="0208170274-3">(</span><span·class="s">"header.hrl"</span><span·class="p"·data-group-id="0208170274-3">)</span><span·class="p">.</span></code></pre><p>The·Makefile·rule·generated·by·this·option·looks·as·follows:</p><pre><code·class="text">module.beam:·module.erl·\ |
| 911 | ··/usr/local/lib/erlang/lib/eunit/include/eunit.hrl·\ | 911 | ··/usr/local/lib/erlang/lib/eunit/include/eunit.hrl·\ |
| 912 | ··header.hrl</code></pre></li><li><p><strong><code·class="inline">makedep_side_effect</code></strong>·-·The·dependencies·are·created·as·a·side·effect·to | 912 | ··header.hrl</code></pre></li><li><p><strong><code·class="inline">makedep_side_effect</code></strong>·-·The·dependencies·are·created·as·a·side·effect·to |
| 913 | the·normal·compilation·process.·This·means·that·the·object·file·will·also·be | 913 | the·normal·compilation·process.·This·means·that·the·object·file·will·also·be |
| 914 | produced.·This·option·override·the·<code·class="inline">makedep</code>·option.</p></li><li><p><strong><code·class="inline">{makedep_output,·Output}</code></strong>·-·Writes·generated·rules·to·<code·class="inline">Output</code>·instead·of | 914 | produced.·This·option·override·the·<code·class="inline">makedep</code>·option.</p></li><li><p><strong><code·class="inline">{makedep_output,·Output}</code></strong>·-·Writes·generated·rules·to·<code·class="inline">Output</code>·instead·of |
| 915 | the·default·<code·class="inline"><File>.Pbeam</code>.·<code·class="inline">Output</code>·can·be·a·filename·or·an·<code·class="inline">io_device()</code>.·To | 915 | the·default·<code·class="inline"><File>.Pbeam</code>.·<code·class="inline">Output</code>·can·be·a·filename·or·an·<code·class="inline">io_device()</code>.·To |
| 916 | write·to·stdout,·use·<code·class="inline">standard_io</code>.·However,·if·<code·class="inline">binary</code>·is·set,·nothing·is | 916 | write·to·stdout,·use·<code·class="inline">standard_io</code>.·However,·if·<code·class="inline">binary</code>·is·set,·nothing·is |
| 917 | written·to·<code·class="inline">Output</code>·and·the·result·is·returned·to·the·caller·with | 917 | written·to·<code·class="inline">Output</code>·and·the·result·is·returned·to·the·caller·with |
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| 969 | that·verification·(there·will·not·even·be·a·warning·if·there·is·a | 969 | that·verification·(there·will·not·even·be·a·warning·if·there·is·a |
| 970 | mismatch).</p></li><li><p><strong><code·class="inline">{no_auto_import,[{F,A},·...]}</code></strong>·-·Makes·the·function·<code·class="inline">F/A</code>·no·longer·being | 970 | mismatch).</p></li><li><p><strong><code·class="inline">{no_auto_import,[{F,A},·...]}</code></strong>·-·Makes·the·function·<code·class="inline">F/A</code>·no·longer·being |
| 971 | auto-imported·from·the·<code·class="inline">erlang</code>·module,·which·resolves·BIF·name·clashes.·This | 971 | auto-imported·from·the·<code·class="inline">erlang</code>·module,·which·resolves·BIF·name·clashes.·This |
| 972 | option·must·be·used·to·resolve·name·clashes·with·auto-imported·BIFs·that·existed | 972 | option·must·be·used·to·resolve·name·clashes·with·auto-imported·BIFs·that·existed |
| 973 | before·Erlang/OTP·R14A··when·calling·a·local·function·with·the·same·name | 973 | before·Erlang/OTP·R14A··when·calling·a·local·function·with·the·same·name |
| 974 | as·an·auto-imported·BIF·without·module·prefix.</p><p>If·the·BIF·is·to·be·called,·use·the·<code·class="inline">erlang</code>·module·prefix | 974 | as·an·auto-imported·BIF·without·module·prefix.</p><p>If·the·BIF·is·to·be·called,·use·the·<code·class="inline">erlang</code>·module·prefix |
| 975 | in·the·call,·not·<code·class="inline">{no_auto_import,[{F,A},·...]}</code>.</p><p>If·this·option·is·written·in·the·source·code,·as·a·<code·class="inline">-compile</code>·directive,·the | 975 | in·the·call,·not·<code·class="inline">{no_auto_import,[{F,A},·...]}</code>.</p><p>If·this·option·is·written·in·the·source·code,·as·a·<code·class="inline">-compile</code>·directive,·the |
| 976 | syntax·<code·class="inline">F/A</code>·can·be·used·instead·of·<code·class="inline">{F,A}</code>.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">compile</span><span·class="p"·data-group-id=" | 976 | syntax·<code·class="inline">F/A</code>·can·be·used·instead·of·<code·class="inline">{F,A}</code>.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">compile</span><span·class="p"·data-group-id="5667410343-1">(</span><span·class="p"·data-group-id="5667410343-2">{</span><span·class="ss">no_auto_import</span><span·class="p">,</span><span·class="p"·data-group-id="5667410343-3">[</span><span·class="ss">error</span><span·class="p">/</span><span·class="[·...·truncated·by·diffoscope;·len:·159,·SHA:·c6a6e5b14c8939c126cf21416d21f0679b8c9982da5f52efe2307f25bed40e5e·...·]-1">)</span><span·class="p">.</span></code></pre></li><li><p><strong><code·class="inline">no_auto_import</code></strong>·-·Do·not·auto-import·any·functions·from·<code·class="inline">erlang</code>·module.</p></li><li><p><strong><code·class="inline">no_line_info</code></strong>·-·Omits·line·number·information·to·produce·a·slightly |
| 977 | smaller·output·file.</p></li><li><p><strong><code·class="inline">no_lint</code></strong>·-·Skips·the·pass·that·checks·for·errors·and·warnings.·Only | 977 | smaller·output·file.</p></li><li><p><strong><code·class="inline">no_lint</code></strong>·-·Skips·the·pass·that·checks·for·errors·and·warnings.·Only |
| 978 | applicable·together·with·the·<code·class="inline">from_abstr</code>·option.·This·is·mainly·for | 978 | applicable·together·with·the·<code·class="inline">from_abstr</code>·option.·This·is·mainly·for |
| 979 | implementations·of·other·languages·on·top·of·Erlang,·which·have·already·done | 979 | implementations·of·other·languages·on·top·of·Erlang,·which·have·already·done |
| 980 | their·own·checks·to·guarantee·correctness·of·the·code.</p><p>Caveat:·When·this·option·is·used,·there·are·no·guarantees·that·the·code·output | 980 | their·own·checks·to·guarantee·correctness·of·the·code.</p><p>Caveat:·When·this·option·is·used,·there·are·no·guarantees·that·the·code·output |
| 981 | by·the·compiler·is·correct·and·safe·to·use.·The·responsibility·for·correctness | 981 | by·the·compiler·is·correct·and·safe·to·use.·The·responsibility·for·correctness |
| 982 | lies·on·the·code·or·person·generating·the·abstract·format.·If·the·code | 982 | lies·on·the·code·or·person·generating·the·abstract·format.·If·the·code |
| 983 | contains·errors,·the·compiler·may·crash·or·produce·unsafe·code.</p></li><li><p><strong><code·class="inline">{extra_chunks,·[{binary(),·binary()}]}</code></strong>·-·Pass·extra·chunks·to·be·stored | 983 | contains·errors,·the·compiler·may·crash·or·produce·unsafe·code.</p></li><li><p><strong><code·class="inline">{extra_chunks,·[{binary(),·binary()}]}</code></strong>·-·Pass·extra·chunks·to·be·stored |
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| 79 | </span><span·class="nc">landing_pad_block</span><span·class="p">:</span><span·class="w"> | 79 | </span><span·class="nc">landing_pad_block</span><span·class="p">:</span><span·class="w"> |
| 80 | ···</span><span·class="p">@</span><span·class="ss">aggregate</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">landingpad</span><span·class="w">·</span><span·class="k">catch</span><span·class="p">,</span><span·class="w">·</span><span·class="p">@</span><span·class="ss">tag</span><span·class="w"> | 80 | ···</span><span·class="p">@</span><span·class="ss">aggregate</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">landingpad</span><span·class="w">·</span><span·class="k">catch</span><span·class="p">,</span><span·class="w">·</span><span·class="p">@</span><span·class="ss">tag</span><span·class="w"> |
| 81 | ···</span><span·class="p">@</span><span·class="ss">catched_val</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">extract</span><span·class="w">·</span><span·class="p">@</span><span·class="ss">ssa_agg</span><span·class="p">,</span><span·class="w">·</span><span·class="err">`</span><span·class="mi">0</span><span·class="err">`</span><span·class="w"> | 81 | ···</span><span·class="p">@</span><span·class="ss">catched_val</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">extract</span><span·class="w">·</span><span·class="p">@</span><span·class="ss">ssa_agg</span><span·class="p">,</span><span·class="w">·</span><span·class="err">`</span><span·class="mi">0</span><span·class="err">`</span><span·class="w"> |
| 82 | ···</span><span·class="ss">br</span><span·class="w">·</span><span·class="err">^</span><span·class="ss">common_end_of_catch</span><span·class="w"> | 82 | ···</span><span·class="ss">br</span><span·class="w">·</span><span·class="err">^</span><span·class="ss">common_end_of_catch</span><span·class="w"> |
| 83 | </span><span·class="nc">common_end_of_catch</span><span·class="p">:</span><span·class="w"> | 83 | </span><span·class="nc">common_end_of_catch</span><span·class="p">:</span><span·class="w"> |
| 84 | ··</span><span·class="p">@</span><span·class="ss">tmp</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">phi</span><span·class="w">·</span><span·class="p"·data-group-id=" | 84 | ··</span><span·class="p">@</span><span·class="ss">tmp</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">phi</span><span·class="w">·</span><span·class="p"·data-group-id="1600354308-1">{</span><span·class="w">·</span><span·class="p">@</span><span·class="ss">catched_val</span><span·class="p">,</span><span·class="w">·</span><span·class="err">^</span><span·class="ss">landing_pad_block</span><span·class="w">·</span><span·class=[·...·truncated·by·diffoscope;·len:·29,·SHA:·c86f2ce96732d34cd82c6bc8802414107abb41985282ed9b54593865692baebd·...·]-1">}</span><span·class="p">,</span><span·class="w"> |
| 85 | ·············</span><span·class="p"·data-group-id=" | 85 | ·············</span><span·class="p"·data-group-id="1600354308-2">{</span><span·class="w">·</span><span·class="p">@</span><span·class="ss">successful_result</span><span·class="p">,</span><span·class="w">·</span><span·class="err">^</span><span·class="ss">protected_blockN</span><span·class="w">·</span><span·c[·...·truncated·by·diffoscope;·len:·34,·SHA:·67c1a8609e94156345ef983518858868d61e6fccf5f1740b22a8a5171147cefa·...·]-2">}</span><span·class="w"> |
| 86 | ··</span><span·class="p">@</span><span·class="ss">result_of_catch_expr</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">catch_end</span><span·class="w">·</span><span·class="p">@</span><span·class="ss">tag</span><span·class="p">,</span><span·class="w">·</span><span·class="p">@</span><span·class="ss">tmp</span></code></pre><p>Just·as·for·a·<code·class="inline">try</code>-<code·class="inline">catch</code>·expression·all·code·that·can·cause·an | 86 | ··</span><span·class="p">@</span><span·class="ss">result_of_catch_expr</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">catch_end</span><span·class="w">·</span><span·class="p">@</span><span·class="ss">tag</span><span·class="p">,</span><span·class="w">·</span><span·class="p">@</span><span·class="ss">tmp</span></code></pre><p>Just·as·for·a·<code·class="inline">try</code>-<code·class="inline">catch</code>·expression·all·code·that·can·cause·an |
| 87 | exception·in·one·of·the·protected·blocks·must·have·explicit·control | 87 | exception·in·one·of·the·protected·blocks·must·have·explicit·control |
| 88 | flow·edges·to·the·landing·pad·block.</p><h2·id="exception-re-issuing"·class="section-heading"> | 88 | flow·edges·to·the·landing·pad·block.</p><h2·id="exception-re-issuing"·class="section-heading"> |
| 89 | ··<a·href="#exception-re-issuing"·class="hover-link"> | 89 | ··<a·href="#exception-re-issuing"·class="hover-link"> |
| 90 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 90 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 91 | ··</a> | 91 | ··</a> |
| 92 | ··<span·class="text">Exception·Re-issuing</span> | 92 | ··<span·class="text">Exception·Re-issuing</span> |
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| 125 | proven·to·always·succeed·or·fail.</p></li></ul><h2·id="variable-naming"·class="section-heading"> | 125 | proven·to·always·succeed·or·fail.</p></li></ul><h2·id="variable-naming"·class="section-heading"> |
| 126 | ··<a·href="#variable-naming"·class="hover-link"> | 126 | ··<a·href="#variable-naming"·class="hover-link"> |
| 127 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 127 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 128 | ··</a> | 128 | ··</a> |
| 129 | ··<span·class="text">Variable·Naming</span> | 129 | ··<span·class="text">Variable·Naming</span> |
| 130 | </h2> | 130 | </h2> |
| 131 | <p>A·variable·name·in·BEAM·SSA·is·either·an·atom·or·a·non-negative | 131 | <p>A·variable·name·in·BEAM·SSA·is·either·an·atom·or·a·non-negative |
| 132 | integer:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">atom</span><span·class="p"·data-group-id="6 | 132 | integer:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">atom</span><span·class="p"·data-group-id="8566884072-1">(</span><span·class="p"·data-group-id="8566884072-1">)</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="nf">non_neg_integer</span><span·class="p"·data-group-id="8566884072-2">(</span><span·class="p"·d[·...·truncated·by·diffoscope;·len:·24,·SHA:·1d1237aafd818c4f1e5bce9aa14ad531e289f95d2e85266589062c1aa0a959e9·...·]-2">)</span></code></pre><p>In·order·to·generate·fresh·unused·variable·names,·all·compiler |
| 133 | transforms·maintain·a·counter,·the·<code·class="inline">cnt</code>-field·in·the·<code·class="inline">b_function</code>·and | 133 | transforms·maintain·a·counter,·the·<code·class="inline">cnt</code>-field·in·the·<code·class="inline">b_function</code>·and |
| 134 | <code·class="inline">opt_st</code>·records,·which·is·incremented·each·time·a·new·variable·or | 134 | <code·class="inline">opt_st</code>·records,·which·is·incremented·each·time·a·new·variable·or |
| 135 | label·is·created.·In·the·following·description·the·value·of·the | 135 | label·is·created.·In·the·following·description·the·value·of·the |
| 136 | <code·class="inline">cnt</code>-field·is·called·<code·class="inline">Cnt</code>.·The·<code·class="inline">Cnt</code>·value·is·guaranteed·to·never | 136 | <code·class="inline">cnt</code>-field·is·called·<code·class="inline">Cnt</code>.·The·<code·class="inline">Cnt</code>·value·is·guaranteed·to·never |
| 137 | clash·with·a·previously·defined·variable·name.·Therefore,·value·of | 137 | clash·with·a·previously·defined·variable·name.·Therefore,·value·of |
| 138 | <code·class="inline">Cnt</code>·can·directly·be·used·as·a·variable·name·in·the·SSA·passes.</p><p>Note·that·the·rules·were·more·complicated·before·Erlang/OTP·27,·because | 138 | <code·class="inline">Cnt</code>·can·directly·be·used·as·a·variable·name·in·the·SSA·passes.</p><p>Note·that·the·rules·were·more·complicated·before·Erlang/OTP·27,·because |
| 139 | the·<code·class="inline">Cnt</code>·value·could·clash·with·other·variables.</p> | 139 | the·<code·class="inline">Cnt</code>·value·could·clash·with·other·variables.</p> |
| Offset 157, 18 lines modified | Offset 157, 18 lines modified | ||
| 157 | </h2> | 157 | </h2> |
| 158 | <h3·id="fixed-bugs-and-malfunctions-1"·class="section-heading"> | 158 | <h3·id="fixed-bugs-and-malfunctions-1"·class="section-heading"> |
| 159 | ··<a·href="#fixed-bugs-and-malfunctions-1"·class="hover-link"> | 159 | ··<a·href="#fixed-bugs-and-malfunctions-1"·class="hover-link"> |
| 160 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 160 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 161 | ··</a> | 161 | ··</a> |
| 162 | ··<span·class="text">Fixed·Bugs·and·Malfunctions</span> | 162 | ··<span·class="text">Fixed·Bugs·and·Malfunctions</span> |
| 163 | </h3> | 163 | </h3> |
| 164 | <ul><li><p>Fixed·a·crash·in·the·common·sub-expression·elimination·pass.</p><p>Own·Id:·OTP-19243·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8818"·title="">GH-8818</a>,·<a·href="https://github.com/erlang/otp/pull/8838"·title="">PR-8838</a></p></li><li><p>Fixed·a·bug·where·bogus·code·was·generated·for·consecutive·calls·to·<code·class="inline">erlang:setelement/2</code>,·potentially·crashing·the·runtime·system.</p><p>Own·Id:·OTP-19270·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8783"·title="">GH-8783</a>,·<a·href="https://github.com/erlang/otp/pull/8898"·title="">PR-8898</a></p></li><li><p>When·the·<code·class="inline">line_coverage</code>·option·was·used,·exceptions·could·show·the·wrong·line·for·where·the·exception·was·raised.</p><p>Own·Id:·OTP-19282·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8907"·title="">PR-8907</a></p></li><li><p>The·<code·class="inline">line_coverage</code>·option·would·be·ignored·if·given·in·a·<code·class="inline">compile()</code>·attribute·within·a·module.</p><p>Own·Id:·OTP-19309·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8942"·title="">GH-8942</a>,·<a·href="https://github.com/erlang/otp/pull/8970"·title="">PR-8970</a></p></li><li><p>A·segment·matching·a·float·in·a·binary·generator·will·now·skip·any·invalid·float·(such·as·a·NaN)·and·continue·matching·the·rest·of·the·binary.·Before·this·correction,·the·comprehension·would·stop·as·soon·as·an·invalid·float·was·encountered.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">BadFloat</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 164 | <ul><li><p>Fixed·a·crash·in·the·common·sub-expression·elimination·pass.</p><p>Own·Id:·OTP-19243·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8818"·title="">GH-8818</a>,·<a·href="https://github.com/erlang/otp/pull/8838"·title="">PR-8838</a></p></li><li><p>Fixed·a·bug·where·bogus·code·was·generated·for·consecutive·calls·to·<code·class="inline">erlang:setelement/2</code>,·potentially·crashing·the·runtime·system.</p><p>Own·Id:·OTP-19270·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8783"·title="">GH-8783</a>,·<a·href="https://github.com/erlang/otp/pull/8898"·title="">PR-8898</a></p></li><li><p>When·the·<code·class="inline">line_coverage</code>·option·was·used,·exceptions·could·show·the·wrong·line·for·where·the·exception·was·raised.</p><p>Own·Id:·OTP-19282·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8907"·title="">PR-8907</a></p></li><li><p>The·<code·class="inline">line_coverage</code>·option·would·be·ignored·if·given·in·a·<code·class="inline">compile()</code>·attribute·within·a·module.</p><p>Own·Id:·OTP-19309·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8942"·title="">GH-8942</a>,·<a·href="https://github.com/erlang/otp/pull/8970"·title="">PR-8970</a></p></li><li><p>A·segment·matching·a·float·in·a·binary·generator·will·now·skip·any·invalid·float·(such·as·a·NaN)·and·continue·matching·the·rest·of·the·binary.·Before·this·correction,·the·comprehension·would·stop·as·soon·as·an·invalid·float·was·encountered.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">BadFloat</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4920987096-1"><<</span><span·class="o">-</span><span·class="mi">1</span><span·class="p">:</span><span·class="mi">64</span><span·class="p"·data-group-id="4920987096-1">>></span><span·class="p">.</span><span·class="w"> |
| 165 | </span><span·class="p"·data-group-id=" | 165 | </span><span·class="p"·data-group-id="4920987096-2"><<</span><span·class="s">"ÿÿÿÿÿÿÿÿ"</span><span·class="p"·data-group-id="4920987096-2">>></span><span·class="gp·unselectable"> |
| 166 | 2>·</span><span·class="p"·data-group-id=" | 166 | 2>·</span><span·class="p"·data-group-id="4920987096-3">[</span><span·class="n">X</span><span·class="w">·</span><span·class="p">||</span><span·class="w">·</span><span·class="p"·data-group-id="4920987096-4"><<</span><span·class="n">X</span><span·class="p">:</span><span·class="mi">64</span><sp[·...·truncated·by·diffoscope;·len:·641,·SHA:·260539923727f39a50f50f5546f3f1e47cc15bc7646e77a85712822190232dbb·...·]-3">]</span><span·class="p">.</span><span·class="w"> |
| 167 | </span><span·class="p"·data-group-id=" | 167 | </span><span·class="p"·data-group-id="4920987096-6">[</span><span·class="mf">0.0</span><span·class="p">,</span><span·class="mf">42.0</span><span·class="p"·data-group-id="4920987096-6">]</span></code></pre><p>Own·Id:·OTP-19331·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8978"·title="">PR-8978</a></p></li></ul><h2·id="compiler-8-5-3"·class="section-heading"> |
| 168 | ··<a·href="#compiler-8-5-3"·class="hover-link"> | 168 | ··<a·href="#compiler-8-5-3"·class="hover-link"> |
| 169 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 169 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 170 | ··</a> | 170 | ··</a> |
| 171 | ··<span·class="text">Compiler·8.5.3</span> | 171 | ··<span·class="text">Compiler·8.5.3</span> |
| 172 | </h2> | 172 | </h2> |
| 173 | <h3·id="fixed-bugs-and-malfunctions-2"·class="section-heading"> | 173 | <h3·id="fixed-bugs-and-malfunctions-2"·class="section-heading"> |
| 174 | ··<a·href="#fixed-bugs-and-malfunctions-2"·class="hover-link"> | 174 | ··<a·href="#fixed-bugs-and-malfunctions-2"·class="hover-link"> |
| Offset 208, 61 lines modified | Offset 208, 61 lines modified | ||
| 208 | </h2> | 208 | </h2> |
| 209 | <h3·id="fixed-bugs-and-malfunctions-5"·class="section-heading"> | 209 | <h3·id="fixed-bugs-and-malfunctions-5"·class="section-heading"> |
| 210 | ··<a·href="#fixed-bugs-and-malfunctions-5"·class="hover-link"> | 210 | ··<a·href="#fixed-bugs-and-malfunctions-5"·class="hover-link"> |
| 211 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 211 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 212 | ··</a> | 212 | ··</a> |
| 213 | ··<span·class="text">Fixed·Bugs·and·Malfunctions</span> | 213 | ··<span·class="text">Fixed·Bugs·and·Malfunctions</span> |
| 214 | </h3> | 214 | </h3> |
| 215 | <ul><li><p>Generators·for·binary·comprehensions·could·be·evaluated·before·it·was·known·that·they·would·be·needed.·That·could·result·in·a·binary·comprehensions·failing·if·a·generator·that·should·not·be·evaluated·until·later·failed.</p><p>As·an·example,·consider·this·module:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 215 | <ul><li><p>Generators·for·binary·comprehensions·could·be·evaluated·before·it·was·known·that·they·would·be·needed.·That·could·result·in·a·binary·comprehensions·failing·if·a·generator·that·should·not·be·evaluated·until·later·failed.</p><p>As·an·example,·consider·this·module:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="4690896707-1">(</span><span·class="ss">t</span><span·class="p"·data-group-id="4690896707-1">)</span><span·class="p">.</span><span·class="w"> |
| 216 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 216 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="4690896707-2">(</span><span·class="p"·data-group-id="4690896707-3">[</span><span·class="ss">f</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data-group-id="4690896707-3">]</span><span·class="p"·data-group-id="4690896707-2">)</span><span·class="p">.</span><span·class="w"> |
| 217 | </span><span·class="nf">f</span><span·class="p"·data-group-id=" | 217 | </span><span·class="nf">f</span><span·class="p"·data-group-id="4690896707-4">(</span><span·class="p"·data-group-id="4690896707-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 218 | ····</span><span·class="p"·data-group-id=" | 218 | ····</span><span·class="p"·data-group-id="4690896707-5"><<</span><span·class="mi">0</span><span·class="w">·</span><span·class="p">||</span><span·class="w">·</span><span·class="p">_</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·730,·SHA:·2dfe3eebaa41471d5c74a3d59c63fdadeb55642c7ec3c8848bd497379e26d2ba·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 219 | </span><span·class="gt">**·exception·error:·bad·generator·ok | 219 | </span><span·class="gt">**·exception·error:·bad·generator·ok |
| 220 | ·····in·function··t:f/0·(t.erl,·line·6)</span></code></pre><p>In·Erlang/OTP·27·it·returns·an·empty·binary:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">t</span><span·class="p">:</span><span·class="nf">f</span><span·class="p"·data-group-id=" | 220 | ·····in·function··t:f/0·(t.erl,·line·6)</span></code></pre><p>In·Erlang/OTP·27·it·returns·an·empty·binary:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">t</span><span·class="p">:</span><span·class="nf">f</span><span·class="p"·data-group-id="0278582654-1">(</span><span·class="p"·data-group-id="0278582654-1">)</span><span·class="p">.</span><span·class="w"> |
| 221 | </span><span·class="p"·data-group-id=" | 221 | </span><span·class="p"·data-group-id="0278582654-2"><<</span><span·class="p"·data-group-id="0278582654-2">>></span></code></pre><p>Own·Id:·OTP-18703·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/7494"·title="">GH-7494</a>,·<a·href="https://github.com/erlang/otp/pull/7538"·title="">PR-7538</a></p></li><li><p>The·documentation·for·the·preprocessor·now·mentions·that·<code·class="inline">defined(Name)</code>·can·be·called·in·the·condition·for·an·<code·class="inline">-if</code>·or·<code·class="inline">-elif</code>·directive·to·test·whether·<code·class="inline">Name</code>·is·the·name·of·a·defined·macro.·(This·feature·was·implemented·in·OTP·21.)</p><p>If·a·function·call·in·an·<code·class="inline">-if</code>·or·<code·class="inline">-elif</code>·with·a·name·that·is·not·the·name·of·a·guard·BIF,·there·would·not·be·a·compilation·error,·but·would·instead·cause·the·lines·following·the·directive·to·be·skipped.·This·has·now·been·changed·to·be·a·compilation·error.</p><p><strong><em>·POTENTIAL·INCOMPATIBILITY·</em></strong></p><p>Own·Id:·OTP-18784·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/7706"·title="">GH-7706</a>,·<a·href="https://github.com/erlang/otp/pull/7726"·title="">PR-7726</a></p></li></ul><h3·id="improvements-and-new-features-1"·class="section-heading"> |
| 222 | ··<a·href="#improvements-and-new-features-1"·class="hover-link"> | 222 | ··<a·href="#improvements-and-new-features-1"·class="hover-link"> |
| 223 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 223 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 224 | ··</a> | 224 | ··</a> |
| 225 | ··<span·class="text">Improvements·and·New·Features</span> | 225 | ··<span·class="text">Improvements·and·New·Features</span> |
| 226 | </h3> | 226 | </h3> |
| 227 | <ul><li><p>The·compiler·now·emits·nicer·error·message·for·function·head·mismatches. | 227 | <ul><li><p>The·compiler·now·emits·nicer·error·message·for·function·head·mismatches. |
| 228 | For·example,·given:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">a</span><span·class="p"·data-group-id=" | 228 | For·example,·given:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">a</span><span·class="p"·data-group-id="8694440693-1">(</span><span·class="p"·data-group-id="8694440693-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> |
| 229 | </span><span·class="nf">a</span><span·class="p"·data-group-id=" | 229 | </span><span·class="nf">a</span><span·class="p"·data-group-id="8694440693-2">(</span><span·class="p">_</span><span·class="p"·data-group-id="8694440693-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">error</span><span·class="p">.</span></code></pre><p>Erlang/OTP·26·and·earlier·would·emit·a·diagnostic·similar·to:</p><pre><code·class="text">t.erl:6:1:·head·mismatch |
| 230 | %····6|·a(_)·->·error. | 230 | %····6|·a(_)·->·error. |
| 231 | %·····|·^</code></pre><p>while·in·Erlang/OTP·27·the·diagnostic·is·similar·to:</p><pre><code·class="text">t.erl:6:1:·head·mismatch:·function·a·with·arities·0·and·1·is·regarded·as·two·distinct·functions.·Is·the·number·of·arguments·incorrect·or·is·the·semicolon·in·a/0·unwanted? | 231 | %·····|·^</code></pre><p>while·in·Erlang/OTP·27·the·diagnostic·is·similar·to:</p><pre><code·class="text">t.erl:6:1:·head·mismatch:·function·a·with·arities·0·and·1·is·regarded·as·two·distinct·functions.·Is·the·number·of·arguments·incorrect·or·is·the·semicolon·in·a/0·unwanted? |
| 232 | %····6|·a(_)·->·error. | 232 | %····6|·a(_)·->·error. |
| 233 | %·····|·^</code></pre><p>Own·Id:·OTP-18648·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7383"·title="">PR-7383</a></p></li><li><p>The·compiler·now·optimizes·creation·of·binaries·that·are·known·to·be·constant.</p><p>Consider·this·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">bin</span><span·class="p"·data-group-id=" | 233 | %·····|·^</code></pre><p>Own·Id:·OTP-18648·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7383"·title="">PR-7383</a></p></li><li><p>The·compiler·now·optimizes·creation·of·binaries·that·are·known·to·be·constant.</p><p>Consider·this·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">bin</span><span·class="p"·data-group-id="6875746293-1">(</span><span·class="p"·data-group-id="6875746293-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 234 | ····</span><span·class="n">C</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">char</span><span·class="p"·data-group-id=" | 234 | ····</span><span·class="n">C</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">char</span><span·class="p"·data-group-id="6875746293-2">(</span><span·class="p"·data-group-id="6875746293-2">)</span><span·class="p">,</span><span·class="w"> |
| 235 | ····</span><span·class="p"·data-group-id=" | 235 | ····</span><span·class="p"·data-group-id="6875746293-3"><<</span><span·class="n">C</span><span·class="p"·data-group-id="6875746293-3">>></span><span·class="p">.</span><span·class="w"> |
| 236 | </span><span·class="nf">char</span><span·class="p"·data-group-id=" | 236 | </span><span·class="nf">char</span><span·class="p"·data-group-id="6875746293-4">(</span><span·class="p"·data-group-id="6875746293-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="sc">$*</span><span·class="p">.</span></code></pre><p>Essentially,·the·compiler·rewrites·the·[·...·truncated·by·diffoscope;·len:·212,·SHA:·67292874c444dcce00950aaadc7afefa54c3094609d8d17bdc397d136da80a57·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 237 | ····</span><span·class="p">_</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">char</span><span·class="p"·data-group-id=" | 237 | ····</span><span·class="p">_</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">char</span><span·class="p"·data-group-id="3561412813-2">(</span><span·class="p"·data-group-id="3561412813-2">)</span><span·class="p">,</span><span·class="w"> |
| 238 | ····</span><span·class="p"·data-group-id=" | 238 | ····</span><span·class="p"·data-group-id="3561412813-3"><<</span><span·class="sc">$*</span><span·class="p"·data-group-id="3561412813-3">>></span><span·class="p">.</span><span·class="w"> |
| 239 | </span><span·class="nf">char</span><span·class="p"·data-group-id=" | 239 | </span><span·class="nf">char</span><span·class="p"·data-group-id="3561412813-4">(</span><span·class="p"·data-group-id="3561412813-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="sc">$*</span><span·class="p">.</span></code></pre><p>Own·Id:·OTP-18673·Aux·Id:·<a·href="http[·...·truncated·by·diffoscope;·len:·818,·SHA:·a43e4cda7874267ccb41140d3a1509c69b43d7bfba644adfd2ee079557d13463·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 240 | </span><span·class="nf">update</span><span·class="p"·data-group-id="4 | 240 | </span><span·class="nf">update</span><span·class="p"·data-group-id="4739808306-3">(</span><span·class="n">Value</span><span·class="p"·data-group-id="4739808306-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 241 | ····</span><span·class="n">R0</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">r</span><span·class="p"·data-group-id="4 | 241 | ····</span><span·class="n">R0</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">r</span><span·class="p"·data-group-id="4739808306-4">{</span><span·class="p"·data-group-id="4739808306-4">}</span><span·class="p">,</span><span·class="w"> |
| 242 | ····</span><span·class="n">R1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">R0</span><span·class="o">#</span><span·class="ss">r</span><span·class="p"·data-group-id="4 | 242 | ····</span><span·class="n">R1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">R0</span><span·class="o">#</span><span·class="ss">r</span><span·class="p"·data-group-id="4739808306-5">{</span><span·class="ss">a</span><span·class="o">=</span><span·class="n">Value</span><span·class="p"·data-group-id="4739808306-5">}</span><span·class="p">,</span><span·class="w"> |
| 243 | ····</span><span·class="n">R2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">R1</span><span·class="o">#</span><span·class="ss">r</span><span·class="p"·data-group-id="4 | 243 | ····</span><span·class="n">R2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">R1</span><span·class="o">#</span><span·class="ss">r</span><span·class="p"·data-group-id="4739808306-6">{</span><span·class="ss">b</span><span·class="o">=</span><span·class="mi">2</span><span·class="p"·data-group-id="4739808306-6">}</span><span·class="p">,</span><span·class="w"> |
| 244 | ····</span><span·class="n">R2</span><span·class="o">#</span><span·class="ss">r</span><span·class="p"·data-group-id="4 | 244 | ····</span><span·class="n">R2</span><span·class="o">#</span><span·class="ss">r</span><span·class="p"·data-group-id="4739808306-7">{</span><span·class="ss">c</span><span·class="o">=</span><span·class="mi">3</span><span·class="p"·data-group-id="4739808306-7">}</span><span·class="p">.</span></code></pre><p>Own·Id:·OTP-18680·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7491"·title="">PR-7491</a>,·<a·href="https://github.com/erlang/otp/pull/8086"·title="">PR-8086</a>,·ERIERL-967</p></li><li><p>Improved·the·performance·of·the·alias·analysis·pass.</p><p>Own·Id:·OTP-18714·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7528"·title="">PR-7528</a>,·<a·href="https://github.com/erlang/otp/issues/7432"·title="">GH-7432</a></p></li><li><p><code·class="inline">-spec</code>·attributes·are·now·used·for·documentation.</p><p>Own·Id:·OTP-18801·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7739"·title="">PR-7739</a></p></li><li><p>Native·coverage·support·has·been·implemented·in·the·JIT.·It·will··automatically·be·used·by·the·<a·href="../../../../lib/tools-4.1.1/doc/html/cover.html"><code·class="inline">cover</code></a>·tool·to·reduce·the·execution·overhead·when·running·cover-compiled·code.</p><p>There·are·also·new·APIs·to·support·native·coverage·without·using·the·<code·class="inline">cover</code>·tool.</p><p>To·instrument·code·for·native·coverage·it·must·be·compiled·with·the·<a·href="compile.html#line_coverage"><code·class="inline">line_coverage</code></a>·option.</p><p>To·enable·native·coverage·in·the·runtime·system,·start·it·like·so:</p><pre><code·class="text">$·erl·+JPcover·true</code></pre><p>There·are·also·the·following·new·functions·for·supporting·native·coverage:</p><ul><li><a·href="../../../../lib/kernel-10.2.3/doc/html/code.html#coverage_support/0"><code·class="inline">code:coverage_support/0</code></a></li><li><a·href="../../../../lib/kernel-10.2.3/doc/html/code.html#get_coverage/2"><code·class="inline">code:get_coverage/2</code></a></li><li><a·href="../../../../lib/kernel-10.2.3/doc/html/code.html#reset_coverage/1"><code·class="inline">code:reset_coverage/1</code></a></li><li><a·href="../../../../lib/kernel-10.2.3/doc/html/code.html#get_coverage_mode/0"><code·class="inline">code:get_coverage_mode/0</code></a></li><li><a·href="../../../../lib/kernel-10.2.3/doc/html/code.html#get_coverage_mode/1"><code·class="inline">code:get_coverage_mode/1</code></a></li><li><a·href="../../../../lib/kernel-10.2.3/doc/html/code.html#set_coverage_mode/1"><code·class="inline">code:set_coverage_mode/1</code></a></li></ul><p>Own·Id:·OTP-18856·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7856"·title="">PR-7856</a></p></li><li><p><a·href="https://www.erlang.org/eeps/eep-0059">EEP-59·-·Documentation·Attributes</a>·has·been·implemented.</p><p>Documentation·attributes·can·be·used·to·document·functions,·types,·callbacks,·and·modules. |
| 245 | The·keyword·<code·class="inline">-moduledoc·"Documentation·here".</code>·is·used·to·document·modules,·while·<code·class="inline">-doc·"Documentation·here".</code>·can·be·used·on·top·of·functions,·types,·and·callbacks·to·document·them,·respectively.</p><ul><li><p>Types,·callbacks,·and·function·documentation·can·be·set·to·<code·class="inline">hidden</code>·either·via·<code·class="inline">-doc·false</code>·or·<code·class="inline">-doc·hidden</code>.·When·documentation·attributes·mark·a·type·as·hidden,·they·will·not·be·part·of·the·documentation.</p></li><li><p>The·documentation·from·<code·class="inline">moduledoc</code>·and·<code·class="inline">doc</code>·gets·added·by·default·to·the·binary·beam·file,·following·the·format·of·<a·href="https://www.erlang.org/eeps/eep-0048">EEP-48</a>.</p></li><li><p>Using·the·compiler·flag·<code·class="inline">warn_missing_doc</code>·will·raise·a·warning·when | 245 | The·keyword·<code·class="inline">-moduledoc·"Documentation·here".</code>·is·used·to·document·modules,·while·<code·class="inline">-doc·"Documentation·here".</code>·can·be·used·on·top·of·functions,·types,·and·callbacks·to·document·them,·respectively.</p><ul><li><p>Types,·callbacks,·and·function·documentation·can·be·set·to·<code·class="inline">hidden</code>·either·via·<code·class="inline">-doc·false</code>·or·<code·class="inline">-doc·hidden</code>.·When·documentation·attributes·mark·a·type·as·hidden,·they·will·not·be·part·of·the·documentation.</p></li><li><p>The·documentation·from·<code·class="inline">moduledoc</code>·and·<code·class="inline">doc</code>·gets·added·by·default·to·the·binary·beam·file,·following·the·format·of·<a·href="https://www.erlang.org/eeps/eep-0048">EEP-48</a>.</p></li><li><p>Using·the·compiler·flag·<code·class="inline">warn_missing_doc</code>·will·raise·a·warning·when |
| 246 | <code·class="inline">-doc</code>·attributes·are·missing·in·exported·functions,·types,·and·callbacks.</p></li><li><p>Using·the·compiler·flag·<code·class="inline">warn_missing_spec_documented</code>·will·raise·a·warning·when | 246 | <code·class="inline">-doc</code>·attributes·are·missing·in·exported·functions,·types,·and·callbacks.</p></li><li><p>Using·the·compiler·flag·<code·class="inline">warn_missing_spec_documented</code>·will·raise·a·warning·when |
| 247 | spec·attributes·are·missing·in·documented·functions,·types,·and·callbacks.</p></li><li><p><code·class="inline">moduledoc</code>s·and·<code·class="inline">doc</code>s·may·refer·to·external·files·to·be·embedded,·such·as·<code·class="inline">-doc·{file,·"README.md"}.</code>,·which·refers·to·the·file·<code·class="inline">README.md</code>·found·in·the·current·working·directory.</p></li><li><p>The·compiler·warns·about·exported·functions·whose·specs·refer·to·hidden·types.·Thus,·there·will·be·warnings·when·a·hidden·type·(meaning,·the·type·is·not·part·of·the·documentation)·gets·used·in·an·exported·function.</p></li></ul><p>Own·Id:·OTP-18916·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7936"·title="">PR-7936</a></p></li><li><p>The·documentation·has·been·migrated·to·use·Markdown·and·ExDoc.</p><p>Own·Id:·OTP-18955·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8026"·title="">PR-8026</a></p></li><li><p>The·order·in·which·the·compiler·looks·up·options·has·changed.</p><p>When·there·is·a·conflict·in·the·compiler·options·given·in·the·<code·class="inline">-compile()</code>·attribute·and·options·given·to·the·compiler,·the·options·given·in·the·<code·class="inline">-compile()</code>·attribute·overrides·the·option·given·to·the·compiler,·which·in·turn·overrides·options·given·in·the·<code·class="inline">ERL_COMPILER_OPTIONS</code>·environment·variable.</p><p>Example:</p><p>If··<code·class="inline">some_module.erl</code>·has·the·following·attribute:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">compile</span><span·class="p"·data-group-id=" | 247 | spec·attributes·are·missing·in·documented·functions,·types,·and·callbacks.</p></li><li><p><code·class="inline">moduledoc</code>s·and·<code·class="inline">doc</code>s·may·refer·to·external·files·to·be·embedded,·such·as·<code·class="inline">-doc·{file,·"README.md"}.</code>,·which·refers·to·the·file·<code·class="inline">README.md</code>·found·in·the·current·working·directory.</p></li><li><p>The·compiler·warns·about·exported·functions·whose·specs·refer·to·hidden·types.·Thus,·there·will·be·warnings·when·a·hidden·type·(meaning,·the·type·is·not·part·of·the·documentation)·gets·used·in·an·exported·function.</p></li></ul><p>Own·Id:·OTP-18916·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7936"·title="">PR-7936</a></p></li><li><p>The·documentation·has·been·migrated·to·use·Markdown·and·ExDoc.</p><p>Own·Id:·OTP-18955·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8026"·title="">PR-8026</a></p></li><li><p>The·order·in·which·the·compiler·looks·up·options·has·changed.</p><p>When·there·is·a·conflict·in·the·compiler·options·given·in·the·<code·class="inline">-compile()</code>·attribute·and·options·given·to·the·compiler,·the·options·given·in·the·<code·class="inline">-compile()</code>·attribute·overrides·the·option·given·to·the·compiler,·which·in·turn·overrides·options·given·in·the·<code·class="inline">ERL_COMPILER_OPTIONS</code>·environment·variable.</p><p>Example:</p><p>If··<code·class="inline">some_module.erl</code>·has·the·following·attribute:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">compile</span><span·class="p"·data-group-id="1494503042-1">(</span><span·class="p"·data-group-id="1494503042-2">[</span><span·class="ss">nowarn_missing_spec</span><span·class="p"·data-group-id="1494503042-2">]</span><span·class="p"·data-group-id="1494503042-1">)</span><span·class="p">.</span></code><[·...·truncated·by·diffoscope;·len:·1215,·SHA:·d88d23f2bc20dd02a1a527256e63509bdacfb19156f63412838f79738fb5d6eb·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 248 | </span><span·class="nf">update</span><span·class="p"·data-group-id=" | 248 | </span><span·class="nf">update</span><span·class="p"·data-group-id="3703346298-3">(</span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id="3703346298-4">{</span><span·class="ss">a</span><span·class="o">=</span><span·class="ss">needs_update</span><span·class="p">,</span><span·class="ss">b</s[·...·truncated·by·diffoscope;·len:·195,·SHA:·dd39f84feb6994fec48ecc677fb2440be700b8387da41cf563523139d15ac747·...·]-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 249 | ····</span><span·class="n">R</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">R0</span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id=" | 249 | ····</span><span·class="n">R</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">R0</span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id="3703346298-5">{</span><span·class="ss">a</span><span·class="o">=</span><span·class="ss">up_to_date</span><span·class="p"·data-group-id="3703346298-5">}</span><span·class="p">,</span><span·class="w"> |
| 250 | ····</span><span·class="k">if</span><span·class="w"> | 250 | ····</span><span·class="k">if</span><span·class="w"> |
| 251 | ········</span><span·class="n">N</span><span·class="w">·</span><span·class="o"><</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 251 | ········</span><span·class="n">N</span><span·class="w">·</span><span·class="o"><</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 252 | ············</span><span·class="n">R</span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id=" | 252 | ············</span><span·class="n">R</span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id="3703346298-6">{</span><span·class="ss">c</span><span·class="o">=</span><span·class="ss">negative</span><span·class="p"·data-group-id="3703346298-6">}</span><span·class="p">;</span><span·class="w"> |
| 253 | ········</span><span·class="n">N</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 253 | ········</span><span·class="n">N</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 254 | ············</span><span·class="n">R</span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id=" | 254 | ············</span><span·class="n">R</span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id="3703346298-7">{</span><span·class="ss">c</span><span·class="o">=</span><span·class="ss">zero</span><span·class="p"·data-group-id="3703346298-7">}</span><span·class="p">;</span><span·class="w"> |
| 255 | ········</span><span·class="n">N</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 255 | ········</span><span·class="n">N</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 256 | ············</span><span·class="n">R</span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id=" | 256 | ············</span><span·class="n">R</span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id="3703346298-8">{</span><span·class="ss">c</span><span·class="o">=</span><span·class="ss">positive</span><span·class="p"·data-group-id="3703346298-8">}</span><span·class="w"> |
| 257 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>The·record·updates·in·each·of·the·three·clauses·of·the·<code·class="inline">if</code>·can·safely·be·done·in-place,·because·variable·<code·class="inline">R</code>·is·not·used·again.</p><p>Own·Id:·OTP-18972·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8090"·title="">PR-8090</a></p></li><li><p>Improved·the·match·context·reuse·optimization·slightly,·allowing·match·contexts·to·be·passed·as-is·to·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#bit_size/1"><code·class="inline">bit_size/1</code></a>·and·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#byte_size/1"><code·class="inline">byte_size/1</code></a>.</p><p>Own·Id:·OTP-18987</p></li><li><p><a·href="../../../../lib/stdlib-6.2.1/doc/html/erl_lint.html"><code·class="inline">erl_lint</code></a>·(and·by·extension·the·<a·href="compile.html"><code·class="inline">compiler</code></a>)·will·now·warn·for·code·using·deprecated·callbacks.</p><p>The·only·callback·currenly·deprecated·is·<code·class="inline">format_status/2</code>·in·<a·href="../../../../lib/stdlib-6.2.1/doc/html/gen_server.html#c:format_status/2"><code·class="inline">gen_server</code></a>,·<a·href="../../../../lib/stdlib-6.2.1/doc/html/gen_event.html#c:format_status/2"><code·class="inline">gen_event</code></a>·and·<a·href="../../../../lib/stdlib-6.2.1/doc/html/gen_server.html#c:format_status/2"><code·class="inline">gen_statem</code></a>.</p><p>You·can·use·<code·class="inline">nowarn_deprecated_callback</code>·to·silence·the·warning.</p><p>Own·Id:·OTP-19010·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8205"·title="">PR-8205</a></p></li></ul><h2·id="compiler-8-4-3-2"·class="section-heading"> | 257 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>The·record·updates·in·each·of·the·three·clauses·of·the·<code·class="inline">if</code>·can·safely·be·done·in-place,·because·variable·<code·class="inline">R</code>·is·not·used·again.</p><p>Own·Id:·OTP-18972·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8090"·title="">PR-8090</a></p></li><li><p>Improved·the·match·context·reuse·optimization·slightly,·allowing·match·contexts·to·be·passed·as-is·to·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#bit_size/1"><code·class="inline">bit_size/1</code></a>·and·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#byte_size/1"><code·class="inline">byte_size/1</code></a>.</p><p>Own·Id:·OTP-18987</p></li><li><p><a·href="../../../../lib/stdlib-6.2.1/doc/html/erl_lint.html"><code·class="inline">erl_lint</code></a>·(and·by·extension·the·<a·href="compile.html"><code·class="inline">compiler</code></a>)·will·now·warn·for·code·using·deprecated·callbacks.</p><p>The·only·callback·currenly·deprecated·is·<code·class="inline">format_status/2</code>·in·<a·href="../../../../lib/stdlib-6.2.1/doc/html/gen_server.html#c:format_status/2"><code·class="inline">gen_server</code></a>,·<a·href="../../../../lib/stdlib-6.2.1/doc/html/gen_event.html#c:format_status/2"><code·class="inline">gen_event</code></a>·and·<a·href="../../../../lib/stdlib-6.2.1/doc/html/gen_server.html#c:format_status/2"><code·class="inline">gen_statem</code></a>.</p><p>You·can·use·<code·class="inline">nowarn_deprecated_callback</code>·to·silence·the·warning.</p><p>Own·Id:·OTP-19010·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8205"·title="">PR-8205</a></p></li></ul><h2·id="compiler-8-4-3-2"·class="section-heading"> |
| 258 | ··<a·href="#compiler-8-4-3-2"·class="hover-link"> | 258 | ··<a·href="#compiler-8-4-3-2"·class="hover-link"> |
| 259 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 259 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 260 | ··</a> | 260 | ··</a> |
| 261 | ··<span·class="text">Compiler·8.4.3.2</span> | 261 | ··<span·class="text">Compiler·8.4.3.2</span> |
| 262 | </h2> | 262 | </h2> |
| 263 | <h3·id="fixed-bugs-and-malfunctions-6"·class="section-heading"> | 263 | <h3·id="fixed-bugs-and-malfunctions-6"·class="section-heading"> |
| Offset 118, 15 lines modified | Offset 118, 15 lines modified | ||
| 118 | <div·id="search"> | 118 | <div·id="search"> |
| 119 | ··<h1> | 119 | ··<h1> |
| 120 | ····<span></span> | 120 | ····<span></span> |
| 121 | ··</h1> | 121 | ··</h1> |
| 122 | ··<div·class="loading"><div></div><div></div><div></div><div></div></div> | 122 | ··<div·class="loading"><div></div><div></div><div></div><div></div></div> |
| 123 | </div> | 123 | </div> |
| 124 | <script·src="dist/search_data- | 124 | <script·src="dist/search_data-62F7C547.js"></script> |
| 125 | ····<footer·class="footer"> | 125 | ····<footer·class="footer"> |
| 126 | ······<p> | 126 | ······<p> |
| 127 | ········<span·class="line"> | 127 | ········<span·class="line"> |
| 128 | ··········<button·class="a-main·footer-button·display-quick-switch"·title="Search·HexDocs·packages"> | 128 | ··········<button·class="a-main·footer-button·display-quick-switch"·title="Search·HexDocs·packages"> |
| 129 | ············Search·HexDocs | 129 | ············Search·HexDocs |
| 130 | ··········</button> | 130 | ··········</button> |
| Offset 138, 50 lines modified | Offset 138, 50 lines modified | ||
| 138 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 138 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 139 | ··</a> | 139 | ··</a> |
| 140 | ··<span·class="text">Syntax</span> | 140 | ··<span·class="text">Syntax</span> |
| 141 | </h2> | 141 | </h2> |
| 142 | <p>SSA·checks·are·embedded·in·the·source·code·as·comments·starting·with | 142 | <p>SSA·checks·are·embedded·in·the·source·code·as·comments·starting·with |
| 143 | with·one·of·<code·class="inline">%ssa%</code>,·<code·class="inline">%%ssa%</code>·or·<code·class="inline">%%%ssa%</code>.·This·is·a·short | 143 | with·one·of·<code·class="inline">%ssa%</code>,·<code·class="inline">%%ssa%</code>·or·<code·class="inline">%%%ssa%</code>.·This·is·a·short |
| 144 | introduction·the·syntax,·for·the·full·syntax·please·refer·to·the | 144 | introduction·the·syntax,·for·the·full·syntax·please·refer·to·the |
| 145 | <code·class="inline">ssa_check_when_clause</code>·production·in·<code·class="inline">erl_parse.yrl</code>.</p><p>SSA·checks·can·be·placed·inside·any·Erlang·function,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">t0</span><span·class="p"·data-group-id="0 | 145 | <code·class="inline">ssa_check_when_clause</code>·production·in·<code·class="inline">erl_parse.yrl</code>.</p><p>SSA·checks·can·be·placed·inside·any·Erlang·function,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">t0</span><span·class="p"·data-group-id="0467167417-1">(</span><span·class="p"·data-group-id="0467167417-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 146 | </span><span·class="c1">%ssa%·()·when·post_ssa_opt·-></span><span·class="w"> | 146 | </span><span·class="c1">%ssa%·()·when·post_ssa_opt·-></span><span·class="w"> |
| 147 | </span><span·class="c1">%ssa%···ret(#{}).</span><span·class="w"> | 147 | </span><span·class="c1">%ssa%···ret(#{}).</span><span·class="w"> |
| 148 | ··</span><span·class="p"·data-group-id="0 | 148 | ··</span><span·class="p"·data-group-id="0467167417-2">#{</span><span·class="p"·data-group-id="0467167417-2">}</span><span·class="p">.</span></code></pre><p>will·check·that·<code·class="inline">t0/0</code>·returns·the·literal·<code·class="inline">#{}</code>.·If·we·want·to·check |
| 149 | that·a·function·returns·its·first·formal·parameter,·we·can·write:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">t1</span><span·class="p"·data-group-id="63 | 149 | that·a·function·returns·its·first·formal·parameter,·we·can·write:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">t1</span><span·class="p"·data-group-id="4630709635-1">(</span><span·class="n">A</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">B</span><span·class="p"·data-group-id="4630709635-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 150 | </span><span·class="c1">%ssa%·(X,·_)·when·post_ssa_opt·-></span><span·class="w"> | 150 | </span><span·class="c1">%ssa%·(X,·_)·when·post_ssa_opt·-></span><span·class="w"> |
| 151 | </span><span·class="c1">%ssa%···ret(X).</span><span·class="w"> | 151 | </span><span·class="c1">%ssa%···ret(X).</span><span·class="w"> |
| 152 | ··</span><span·class="n">A</span><span·class="p">.</span></code></pre><p>Note·how·we·match·the·first·formal·parameter·using·<code·class="inline">X</code>.·The·reason·for | 152 | ··</span><span·class="n">A</span><span·class="p">.</span></code></pre><p>Note·how·we·match·the·first·formal·parameter·using·<code·class="inline">X</code>.·The·reason·for |
| 153 | having·our·own·formal·parameters·for·the·SSA·check,·is·that·we·don't | 153 | having·our·own·formal·parameters·for·the·SSA·check,·is·that·we·don't |
| 154 | want·to·introduce·new·identifiers·at·the·Erlang·level·to·support | 154 | want·to·introduce·new·identifiers·at·the·Erlang·level·to·support |
| 155 | SSA-level·checks.·Consider·if·<code·class="inline">t1/2</code>·had·been·defined·as·<code·class="inline">t1([A|As],·B)</code>·we·would·have·had·to·introduce·a·new·identifier·for·the·aggregate | 155 | SSA-level·checks.·Consider·if·<code·class="inline">t1/2</code>·had·been·defined·as·<code·class="inline">t1([A|As],·B)</code>·we·would·have·had·to·introduce·a·new·identifier·for·the·aggregate |
| 156 | value·<code·class="inline">[A|As]</code>.</p><p>The·full·syntax·for·a·SSA·check·clause·is:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o"><</span><span·class="ss">expected</span><span·class="o">-</span><span·class="ss">result</span><span·class="o">></span><span·class="o">?</span><span·class="w">·</span><span·class="p"·data-group-id=" | 156 | value·<code·class="inline">[A|As]</code>.</p><p>The·full·syntax·for·a·SSA·check·clause·is:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o"><</span><span·class="ss">expected</span><span·class="o">-</span><span·class="ss">result</span><span·class="o">></span><span·class="o">?</span><span·class="w">·</span><span·class="p"·data-group-id="2943907564-1">(</span><span·class="o"><</span><span·class="ss">formals</span><span·class="o">></span><span·class="p"·data-group-id="2943907564-1">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="o"><</span><span·class="ss">pipeline</span><span·class="o">-</span><span·class="ss">location</span><span·class="o">></span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="o"><</span><span·class="ss">checks</span><span·class="o">></span><span·class="w">·</span><span·class="ss">'.'</span></code></pre><p>where·<code·class="inline"><expected-result></code>·can·be·one·of·<code·class="inline">pass</code>·(the·check·must |
| 157 | succeed),·<code·class="inline">fail</code>·and·<code·class="inline">xfail</code>·(the·check·must·fail).·Omitting | 157 | succeed),·<code·class="inline">fail</code>·and·<code·class="inline">xfail</code>·(the·check·must·fail).·Omitting |
| 158 | <code·class="inline"><expected-result></code>·is·parsed·as·an·implicit·<code·class="inline">pass</code>.</p><p><code·class="inline"><formals></code>·is·a·comma-separated·list·of·variables.</p><p><code·class="inline"><pipeline-location></code>·specifies·when·in·the·compiler·pipeline·to·run | 158 | <code·class="inline"><expected-result></code>·is·parsed·as·an·implicit·<code·class="inline">pass</code>.</p><p><code·class="inline"><formals></code>·is·a·comma-separated·list·of·variables.</p><p><code·class="inline"><pipeline-location></code>·specifies·when·in·the·compiler·pipeline·to·run |
| 159 | the·checks.·For·now·the·only·supported·value·for·<code·class="inline"><pipeline-location></code> | 159 | the·checks.·For·now·the·only·supported·value·for·<code·class="inline"><pipeline-location></code> |
| 160 | is·<code·class="inline">post_ssa_opt</code>·which·runs·the·checks·after·the·<code·class="inline">ssa_opt</code>·pass.</p><p><code·class="inline"><checks></code>·is·a·comma-separated·list·of·matches·against·the·BEAM·SSA | 160 | is·<code·class="inline">post_ssa_opt</code>·which·runs·the·checks·after·the·<code·class="inline">ssa_opt</code>·pass.</p><p><code·class="inline"><checks></code>·is·a·comma-separated·list·of·matches·against·the·BEAM·SSA |
| 161 | code.·For·non-flow-control·operations·the·syntax·is:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o"><</span><span·class="ss">variable</span><span·class="o">></span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o"><</span><span·class="ss">operation</span><span·class="o">></span><span·class="w">·</span><span·class="p"·data-group-id=" | 161 | code.·For·non-flow-control·operations·the·syntax·is:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o"><</span><span·class="ss">variable</span><span·class="o">></span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o"><</span><span·class="ss">operation</span><span·class="o">></span><span·class="w">·</span><span·class="p"·data-group-id="2014895720-1">(</span><span·class="w">·</span><span·class="o"><</span><span·class="ss">arguments</span><span·class="o">></span><span·class="w">·</span><span·class="p"·data-group-id="2014895720-1">)</span><span·class="w">·</span><span·class="o"><</span><span·class="ss">annotation</span><span·class="o">></span><span·class="o">?</span></code></pre><p>where·<code·class="inline"><operation></code>·is·the·<code·class="inline">#b_set.op</code>·field·from·the·internal·SSA |
| 162 | representation.·BIFs·are·written·as·<code·class="inline">bif:<atom></code>.</p><p><code·class="inline"><arguments></code>·is·a·comma-separated·list·of·variables·or·literals.</p><p>For·flow·control·operations·and·labels,·the·syntax·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">br</span><span·class="p"·data-group-id=" | 162 | representation.·BIFs·are·written·as·<code·class="inline">bif:<atom></code>.</p><p><code·class="inline"><arguments></code>·is·a·comma-separated·list·of·variables·or·literals.</p><p>For·flow·control·operations·and·labels,·the·syntax·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">br</span><span·class="p"·data-group-id="5366179322-1">(</span><span·class="o"><</span><span·class="ss">bool</span><span·class="o">></span><span·class="p">,</span><span·class="w">·</span><span·class="o"><</span><span·class="ss">true</span><span·class="o">-</span><span·class="ss">label</s[·...·truncated·by·diffoscope;·len:·256,·SHA:·14714801a221f03febd5da5c784cdd45e5cdba776731a1caf1bfe4573f145fab·...·]-1">)</span><span·class="w"> |
| 163 | </span><span·class="nf">switch</span><span·class="p"·data-group-id=" | 163 | </span><span·class="nf">switch</span><span·class="p"·data-group-id="5366179322-2">(</span><span·class="o"><</span><span·class="ss">value</span><span·class="o">></span><span·class="p">,</span><span·class="w">·</span><span·class="o"><</span><span·class="ss">fail</span><span·class="o">-</span><span·class="ss">label</[·...·truncated·by·diffoscope;·len:·619,·SHA:·c4b87ab8e4e04126c721dd7938d304b995f1e5a09bf9dfbf8be53abc2373921c·...·]-2">)</span><span·class="w"> |
| 164 | </span><span·class="nf">ret</span><span·class="p"·data-group-id=" | 164 | </span><span·class="nf">ret</span><span·class="p"·data-group-id="5366179322-5">(</span><span·class="o"><</span><span·class="ss">value</span><span·class="o">></span><span·class="p"·data-group-id="5366179322-5">)</span><span·class="w"> |
| 165 | </span><span·class="ss">label</span><span·class="w">·</span><span·class="o"><</span><span·class="ss">value</span><span·class="o">></span></code></pre><p>where·<code·class="inline"><value></code>·is·a·literal·or·a·variable.</p><p>A·check·can·also·include·an·assertion·on·operation·annotations.·The | 165 | </span><span·class="ss">label</span><span·class="w">·</span><span·class="o"><</span><span·class="ss">value</span><span·class="o">></span></code></pre><p>where·<code·class="inline"><value></code>·is·a·literal·or·a·variable.</p><p>A·check·can·also·include·an·assertion·on·operation·annotations.·The |
| 166 | assertion·is·written·as·a·map-like·pattern·following·the·argument | 166 | assertion·is·written·as·a·map-like·pattern·following·the·argument |
| 167 | list,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">t0</span><span·class="p"·data-group-id="3 | 167 | list,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">t0</span><span·class="p"·data-group-id="3687938027-1">(</span><span·class="p"·data-group-id="3687938027-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 168 | </span><span·class="c1">%ssa%·()·when·post_ssa_opt·-></span><span·class="w"> | 168 | </span><span·class="c1">%ssa%·()·when·post_ssa_opt·-></span><span·class="w"> |
| 169 | </span><span·class="c1">%ssa%·_·=·call(fun·return_int/0)·{·result_type·=>·{t_integer,{17,17}},</span><span·class="w"> | 169 | </span><span·class="c1">%ssa%·_·=·call(fun·return_int/0)·{·result_type·=>·{t_integer,{17,17}},</span><span·class="w"> |
| 170 | </span><span·class="c1">%ssa%······························location·=>·{_,32}·},</span><span·class="w"> | 170 | </span><span·class="c1">%ssa%······························location·=>·{_,32}·},</span><span·class="w"> |
| 171 | </span><span·class="c1">%ssa%·_·=·call(fun·return_tuple/0)·{</span><span·class="w"> | 171 | </span><span·class="c1">%ssa%·_·=·call(fun·return_tuple/0)·{</span><span·class="w"> |
| 172 | </span><span·class="c1">%ssa%····result_type·=>·{t_tuple,2,true,#{1·=>·{t_integer,{1,1}},</span><span·class="w"> | 172 | </span><span·class="c1">%ssa%····result_type·=>·{t_tuple,2,true,#{1·=>·{t_integer,{1,1}},</span><span·class="w"> |
| 173 | </span><span·class="c1">%ssa%·····································2·=>·{t_integer,{2,2}}}}</span><span·class="w"> | 173 | </span><span·class="c1">%ssa%·····································2·=>·{t_integer,{2,2}}}}</span><span·class="w"> |
| 174 | </span><span·class="c1">%ssa%·}.</span><span·class="w"> | 174 | </span><span·class="c1">%ssa%·}.</span><span·class="w"> |
| 175 | ····</span><span·class="n">X</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">return_int</span><span·class="p"·data-group-id="3 | 175 | ····</span><span·class="n">X</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">return_int</span><span·class="p"·data-group-id="3687938027-2">(</span><span·class="p"·data-group-id="3687938027-2">)</span><span·class="p">,</span><span·class="w"> |
| 176 | ····</span><span·class="n">Y</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">return_tuple</span><span·class="p"·data-group-id="3 | 176 | ····</span><span·class="n">Y</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">return_tuple</span><span·class="p"·data-group-id="3687938027-3">(</span><span·class="p"·data-group-id="3687938027-3">)</span><span·class="p">,</span><span·class="w"> |
| 177 | ····</span><span·class="p"·data-group-id="3 | 177 | ····</span><span·class="p"·data-group-id="3687938027-4">{</span><span·class="n">X</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Y</span><span·class="p"·data-group-id="3687938027-4">}</span><span·class="p">.</span></code></pre><h2·id="semantics"·class="section-heading"> |
| 178 | ··<a·href="#semantics"·class="hover-link"> | 178 | ··<a·href="#semantics"·class="hover-link"> |
| 179 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 179 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 180 | ··</a> | 180 | ··</a> |
| 181 | ··<span·class="text">Semantics</span> | 181 | ··<span·class="text">Semantics</span> |
| 182 | </h2> | 182 | </h2> |
| 183 | <p>When·an·SSA·assertion·is·matched·against·the·BEAM·SSA·for·a·function, | 183 | <p>When·an·SSA·assertion·is·matched·against·the·BEAM·SSA·for·a·function, |
| 184 | patterns·are·applied·sequentially.·If·the·current·pattern·doesn't | 184 | patterns·are·applied·sequentially.·If·the·current·pattern·doesn't |
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| 3 | ?rw-r--r--··6.1·unx······716·bx·defN·25-Mar-18·0 | 3 | ?rw-r--r--··6.1·unx······716·bx·defN·25-Mar-18·08:50·OEBPS/title.xhtml |
| 4 | ?rw-r--r--··6.1·unx···142075·bx·defN·25-Mar-18·0 | 4 | ?rw-r--r--··6.1·unx···142075·bx·defN·25-Mar-18·08:50·OEBPS/notes.xhtml |
| 5 | ?rw-r--r--··6.1·unx····48579·bx·defN·25-Mar-18·0 | 5 | ?rw-r--r--··6.1·unx····48579·bx·defN·25-Mar-18·08:50·OEBPS/new_api.xhtml |
| 6 | ?rw-r--r--··6.1·unx·····1443·bx·defN·25-Mar-18·0 | 6 | ?rw-r--r--··6.1·unx·····1443·bx·defN·25-Mar-18·08:50·OEBPS/nav.xhtml |
| 7 | ?rw-r--r--··6.1·unx·····7065·bx·defN·25-Mar-18·0 | 7 | ?rw-r--r--··6.1·unx·····7065·bx·defN·25-Mar-18·08:50·OEBPS/licenses.xhtml |
| 8 | ?rw-r--r--··6.1·unx·····9663·bx·defN·25-Mar-18·0 | 8 | ?rw-r--r--··6.1·unx·····9663·bx·defN·25-Mar-18·08:50·OEBPS/fips.xhtml |
| 9 | ?rw-r--r--··6.1·unx····14857·bx·defN·25-Mar-18·0 | 9 | ?rw-r--r--··6.1·unx····14857·bx·defN·25-Mar-18·08:50·OEBPS/engine_load.xhtml |
| 10 | ?rw-r--r--··6.1·unx····13755·bx·defN·25-Mar-18·0 | 10 | ?rw-r--r--··6.1·unx····13755·bx·defN·25-Mar-18·08:50·OEBPS/engine_keys.xhtml |
| 11 | ?rw-r--r--··6.1·unx····14562·bx·defN·25-Mar-18·0 | 11 | ?rw-r--r--··6.1·unx····14562·bx·defN·25-Mar-18·08:50·OEBPS/dist/epub-erlang-ESPT6BQV.css |
| 12 | ?rw-r--r--··6.1·unx······499·bx·defN·25-Mar-18·0 | 12 | ?rw-r--r--··6.1·unx······499·bx·defN·25-Mar-18·08:50·OEBPS/dist/epub-LSJCIYTM.js |
| 13 | ?rw-r--r--··6.1·unx·····3970·bx·defN·25-Mar-18·0 | 13 | ?rw-r--r--··6.1·unx·····3970·bx·defN·25-Mar-18·08:50·OEBPS/crypto_app.xhtml |
| 14 | ?rw-r--r--··6.1·unx···285776·bx·defN·25-Mar-18·0 | 14 | ?rw-r--r--··6.1·unx···285776·bx·defN·25-Mar-18·08:50·OEBPS/crypto.xhtml |
| 15 | ?rw-r--r--··6.1·unx·····2365·bx·defN·25-Mar-18·0 | 15 | ?rw-r--r--··6.1·unx·····2365·bx·defN·25-Mar-18·08:50·OEBPS/content.opf |
| 16 | ?rw-r--r--··6.1·unx·····5837·bx·defN·25-Mar-18·0 | 16 | ?rw-r--r--··6.1·unx·····5837·bx·defN·25-Mar-18·08:50·OEBPS/assets/logo.png |
| 17 | ?rw-r--r--··6.1·unx····29121·bx·defN·25-Mar-18·0 | 17 | ?rw-r--r--··6.1·unx····29121·bx·defN·25-Mar-18·08:50·OEBPS/algorithm_details.xhtml |
| 18 | ?rw-r--r--··6.1·unx······252·bx·defN·25-Mar-18·0 | 18 | ?rw-r--r--··6.1·unx······252·bx·defN·25-Mar-18·08:50·META-INF/container.xml |
| 19 | ?rw-r--r--··6.1·unx······162·bx·defN·25-Mar-18·0 | 19 | ?rw-r--r--··6.1·unx······162·bx·defN·25-Mar-18·08:50·META-INF/com.apple.ibooks.display-options.xml |
| 20 | 18·files,·580717·bytes·uncompressed,·12393 | 20 | 18·files,·580717·bytes·uncompressed,·123933·bytes·compressed:··78.7% |
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| 1 | Zip·archive·data,·made·by·v6.1·UNIX,·extract·using·at·least·v1.0,·last·modified,·last·modified·Sun,·Mar·18·2025·0 | 1 | Zip·archive·data,·made·by·v6.1·UNIX,·extract·using·at·least·v1.0,·last·modified,·last·modified·Sun,·Mar·18·2025·08:50:20,·uncompressed·size·20,·method=store |
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| 591 | ····<div·class="summary-row"> | 591 | ····<div·class="summary-row"> |
| 592 | ······<div·class="summary-signature"> | 592 | ······<div·class="summary-signature"> |
| 593 | ········<a·href="#t:rsa_params/0"·data-no-tooltip·translate="no">rsa_params()</a> | 593 | ········<a·href="#t:rsa_params/0"·data-no-tooltip·translate="no">rsa_params()</a> |
| 594 | ······</div> | 594 | ······</div> |
| 595 | ········<div·class="summary-synopsis"><pre><code·class="text">rsa_public()·=·[E,·N]</code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">rsa_private</span><span·class="p"·data-group-id=" | 595 | ········<div·class="summary-synopsis"><pre><code·class="text">rsa_public()·=·[E,·N]</code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">rsa_private</span><span·class="p"·data-group-id="5809920801-1">(</span><span·class="p"·data-group-id="5809920801-1">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="5809920801-2">[</span><span·class="n">E</span><span·class="p">,</span><span·cl[·...·truncated·by·diffoscope;·len:·863,·SHA:·3221dcc277cffb6c42410a8220a34ba716b70afe81616f1da2a1d80a478ed2d1·...·]-3">]</span></code></pre><p>Where·E·is·the·public·exponent,·N·is·public·modulus·and·D·is·the·private |
| 596 | exponent.·The·longer·key·format·contains·redundant·information·that·will·make | 596 | exponent.·The·longer·key·format·contains·redundant·information·that·will·make |
| 597 | the·calculation·faster.·P1·and·P2·are·first·and·second·prime·factors.·E1·and·E2 | 597 | the·calculation·faster.·P1·and·P2·are·first·and·second·prime·factors.·E1·and·E2 |
| 598 | are·first·and·second·exponents.·C·is·the·CRT·coefficient.·The·terminology·is | 598 | are·first·and·second·exponents.·C·is·the·CRT·coefficient.·The·terminology·is |
| 599 | taken·from·<a·href="http://www.ietf.org/rfc/rfc3447.txt">RFC·3447</a>.</p></div> | 599 | taken·from·<a·href="http://www.ietf.org/rfc/rfc3447.txt">RFC·3447</a>.</p></div> |
| 600 | ····</div> | 600 | ····</div> |
| Offset 3033, 15 lines modified | Offset 3033, 15 lines modified | ||
| 3033 | ······<div·class="specs"> | 3033 | ······<div·class="specs"> |
| 3034 | ··········<pre·translate="no"><span·class="attribute">-type</span>·rsa_params()·::·{ModulusSizeInBits·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:integer/0">integer</a>(),·PublicExponent·::·<a·href="#t:key_integer/0">key_integer</a>()}.</pre> | 3034 | ··········<pre·translate="no"><span·class="attribute">-type</span>·rsa_params()·::·{ModulusSizeInBits·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:integer/0">integer</a>(),·PublicExponent·::·<a·href="#t:key_integer/0">key_integer</a>()}.</pre> |
| 3035 | ······</div> | 3035 | ······</div> |
| 3036 | <pre><code·class="text">rsa_public()·=·[E,·N]</code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">rsa_private</span><span·class="p"·data-group-id=" | 3036 | <pre><code·class="text">rsa_public()·=·[E,·N]</code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">rsa_private</span><span·class="p"·data-group-id="5809920801-1">(</span><span·class="p"·data-group-id="5809920801-1">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="5809920801-2">[</span><span·class="n">E</span><span·class="p">,</span><span·cl[·...·truncated·by·diffoscope;·len:·863,·SHA:·3221dcc277cffb6c42410a8220a34ba716b70afe81616f1da2a1d80a478ed2d1·...·]-3">]</span></code></pre><p>Where·E·is·the·public·exponent,·N·is·public·modulus·and·D·is·the·private |
| 3037 | exponent.·The·longer·key·format·contains·redundant·information·that·will·make | 3037 | exponent.·The·longer·key·format·contains·redundant·information·that·will·make |
| 3038 | the·calculation·faster.·P1·and·P2·are·first·and·second·prime·factors.·E1·and·E2 | 3038 | the·calculation·faster.·P1·and·P2·are·first·and·second·prime·factors.·E1·and·E2 |
| 3039 | are·first·and·second·exponents.·C·is·the·CRT·coefficient.·The·terminology·is | 3039 | are·first·and·second·exponents.·C·is·the·CRT·coefficient.·The·terminology·is |
| 3040 | taken·from·<a·href="http://www.ietf.org/rfc/rfc3447.txt">RFC·3447</a>.</p> | 3040 | taken·from·<a·href="http://www.ietf.org/rfc/rfc3447.txt">RFC·3447</a>.</p> |
| 3041 | ··</section> | 3041 | ··</section> |
| 3042 | </section> | 3042 | </section> |
| 3043 | <section·class="detail"·id="t:rsa_private/0"> | 3043 | <section·class="detail"·id="t:rsa_private/0"> |
| Offset 5316, 17 lines modified | Offset 5316, 17 lines modified | ||
| 5316 | ······</div> | 5316 | ······</div> |
| 5317 | <p>Create·a·state·object·for·<a·href="../../../../lib/stdlib-6.2.1/doc/html/rand.html">random·number·generation</a>,·in·order·to | 5317 | <p>Create·a·state·object·for·<a·href="../../../../lib/stdlib-6.2.1/doc/html/rand.html">random·number·generation</a>,·in·order·to |
| 5318 | generate·cryptographically·strong·random·numbers·(based·on·OpenSSL's | 5318 | generate·cryptographically·strong·random·numbers·(based·on·OpenSSL's |
| 5319 | <code·class="inline">BN_rand_range</code>).</p><p>Saves·the·state·in·the·process·dictionary·before·returning·it·as | 5319 | <code·class="inline">BN_rand_range</code>).</p><p>Saves·the·state·in·the·process·dictionary·before·returning·it·as |
| 5320 | well.·See·also·<a·href="../../../../lib/stdlib-6.2.1/doc/html/rand.html#seed/1"><code·class="inline">rand:seed/1</code></a>·and·<a·href="#rand_seed_s/0"><code·class="inline">rand_seed_s/0</code></a>.</p><p>When·using·the·state·object·from·this·function·the·<a·href="../../../../lib/stdlib-6.2.1/doc/html/rand.html"><code·class="inline">rand</code></a>·functions·using·it | 5320 | well.·See·also·<a·href="../../../../lib/stdlib-6.2.1/doc/html/rand.html#seed/1"><code·class="inline">rand:seed/1</code></a>·and·<a·href="#rand_seed_s/0"><code·class="inline">rand_seed_s/0</code></a>.</p><p>When·using·the·state·object·from·this·function·the·<a·href="../../../../lib/stdlib-6.2.1/doc/html/rand.html"><code·class="inline">rand</code></a>·functions·using·it |
| 5321 | may·raise·exception·<code·class="inline">error:low_entropy</code>·in·case·the·random·generator·failed·due | 5321 | may·raise·exception·<code·class="inline">error:low_entropy</code>·in·case·the·random·generator·failed·due |
| 5322 | to·lack·of·secure·"randomness".</p><p><em>Example</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">_</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">rand_seed</span><span·class="p"·data-group-id=" | 5322 | to·lack·of·secure·"randomness".</p><p><em>Example</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">_</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">rand_seed</span><span·class="p"·data-group-id="0814048345-1">(</span><span·class="p"·data-group-id="0814048345-1">)</span><span·class="p">,</span><span·class="w"> |
| 5323 | </span><span·class="p">_</span><span·class="n">IntegerValue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">uniform</span><span·class="p"·data-group-id=" | 5323 | </span><span·class="p">_</span><span·class="n">IntegerValue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">uniform</span><span·class="p"·data-group-id="0814048345-2">(</span><span·class="mi">42</span><span·class="p"·data-group-id="0814048345-2">)</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%·[1;·42]</span><span·class="w"> |
| 5324 | </span><span·class="p">_</span><span·class="n">FloatValue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">uniform</span><span·class="p"·data-group-id=" | 5324 | </span><span·class="p">_</span><span·class="n">FloatValue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">uniform</span><span·class="p"·data-group-id="0814048345-3">(</span><span·class="p"·data-group-id="0814048345-3">)</span><span·class="p">.</span><span·class="w">·····</span><span·class="c1">%·[0.0;·1.0[</span></code></pre> |
| 5325 | ··</section> | 5325 | ··</section> |
| 5326 | </section> | 5326 | </section> |
| 5327 | <section·class="detail"·id="rand_seed/1"> | 5327 | <section·class="detail"·id="rand_seed/1"> |
| 5328 | ··<div·class="detail-header"> | 5328 | ··<div·class="detail-header"> |
| 5329 | ····<a·href="#rand_seed/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 5329 | ····<a·href="#rand_seed/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 5330 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 5330 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 5380, 17 lines modified | Offset 5380, 17 lines modified | ||
| 5380 | ······</div> | 5380 | ······</div> |
| 5381 | <p>Create·a·state·object·for·<a·href="../../../../lib/stdlib-6.2.1/doc/html/rand.html">random·number·generation</a>,·in·order·to | 5381 | <p>Create·a·state·object·for·<a·href="../../../../lib/stdlib-6.2.1/doc/html/rand.html">random·number·generation</a>,·in·order·to |
| 5382 | generate·cryptographically·strong·random·numbers.</p><p>Saves·the·state·in·the·process·dictionary·before·returning·it·as·well.·See·also | 5382 | generate·cryptographically·strong·random·numbers.</p><p>Saves·the·state·in·the·process·dictionary·before·returning·it·as·well.·See·also |
| 5383 | <a·href="../../../../lib/stdlib-6.2.1/doc/html/rand.html#seed/1"><code·class="inline">rand:seed/1</code></a>·and·<a·href="#rand_seed_alg_s/1"><code·class="inline">rand_seed_alg_s/1</code></a>.</p><p>When·using·the·state·object·from·this·function·the·<a·href="../../../../lib/stdlib-6.2.1/doc/html/rand.html"><code·class="inline">rand</code></a>·functions·using·it | 5383 | <a·href="../../../../lib/stdlib-6.2.1/doc/html/rand.html#seed/1"><code·class="inline">rand:seed/1</code></a>·and·<a·href="#rand_seed_alg_s/1"><code·class="inline">rand_seed_alg_s/1</code></a>.</p><p>When·using·the·state·object·from·this·function·the·<a·href="../../../../lib/stdlib-6.2.1/doc/html/rand.html"><code·class="inline">rand</code></a>·functions·using·it |
| 5384 | may·raise·exception·<code·class="inline">error:low_entropy</code>·in·case·the·random·generator·failed·due | 5384 | may·raise·exception·<code·class="inline">error:low_entropy</code>·in·case·the·random·generator·failed·due |
| 5385 | to·lack·of·secure·"randomness".</p><p><em>Example</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">_</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">rand_seed_alg</span><span·class="p"·data-group-id=" | 5385 | to·lack·of·secure·"randomness".</p><p><em>Example</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">_</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">rand_seed_alg</span><span·class="p"·data-group-id="8724023855-1">(</span><span·class="ss">crypto_cache</span><span·class="p"·data-group-id="8724023855-1">)</span><span·class="p">,</span><span·class="w"> |
| 5386 | </span><span·class="p">_</span><span·class="n">IntegerValue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">uniform</span><span·class="p"·data-group-id=" | 5386 | </span><span·class="p">_</span><span·class="n">IntegerValue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">uniform</span><span·class="p"·data-group-id="8724023855-2">(</span><span·class="mi">42</span><span·class="p"·data-group-id="8724023855-2">)</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%·[1;·42]</span><span·class="w"> |
| 5387 | </span><span·class="p">_</span><span·class="n">FloatValue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">uniform</span><span·class="p"·data-group-id=" | 5387 | </span><span·class="p">_</span><span·class="n">FloatValue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">uniform</span><span·class="p"·data-group-id="8724023855-3">(</span><span·class="p"·data-group-id="8724023855-3">)</span><span·class="p">.</span><span·class="w">·····</span><span·class="c1">%·[0.0;·1.0[</span></code></pre> |
| 5388 | ··</section> | 5388 | ··</section> |
| 5389 | </section> | 5389 | </section> |
| 5390 | <section·class="detail"·id="rand_seed_alg/2"> | 5390 | <section·class="detail"·id="rand_seed_alg/2"> |
| 5391 | ··<div·class="detail-header"> | 5391 | ··<div·class="detail-header"> |
| 5392 | ····<a·href="#rand_seed_alg/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 5392 | ····<a·href="#rand_seed_alg/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 5393 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 5393 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 5412, 20 lines modified | Offset 5412, 20 lines modified | ||
| 5412 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·rand_seed_alg(Alg·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:atom/0">atom</a>(),·Seed·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>())·->·{<a·href="../../../../lib/stdlib-6.2.1/doc/html/rand.html#t:alg_handler/0">rand:alg_handler</a>(),·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:atom/0">atom</a>()·|·<a·href="#t:rand_cache_seed/0">rand_cache_seed</a>()}.</pre> | 5412 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·rand_seed_alg(Alg·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:atom/0">atom</a>(),·Seed·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>())·->·{<a·href="../../../../lib/stdlib-6.2.1/doc/html/rand.html#t:alg_handler/0">rand:alg_handler</a>(),·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:atom/0">atom</a>()·|·<a·href="#t:rand_cache_seed/0">rand_cache_seed</a>()}.</pre> |
| 5413 | ······</div> | 5413 | ······</div> |
| 5414 | <p>Creates·a·state·object·for·<a·href="../../../../lib/stdlib-6.2.1/doc/html/rand.html">random·number·generation</a>,·in·order·to | 5414 | <p>Creates·a·state·object·for·<a·href="../../../../lib/stdlib-6.2.1/doc/html/rand.html">random·number·generation</a>,·in·order·to |
| 5415 | generate·cryptographically·unpredictable·random·numbers.</p><p>Saves·the·state·in·the·process·dictionary·before·returning·it·as·well.·See·also | 5415 | generate·cryptographically·unpredictable·random·numbers.</p><p>Saves·the·state·in·the·process·dictionary·before·returning·it·as·well.·See·also |
| 5416 | <a·href="#rand_seed_alg_s/2"><code·class="inline">rand_seed_alg_s/2</code></a>.</p><p><em>Example</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">_</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">rand_seed_alg</span><span·class="p"·data-group-id=" | 5416 | <a·href="#rand_seed_alg_s/2"><code·class="inline">rand_seed_alg_s/2</code></a>.</p><p><em>Example</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">_</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">rand_seed_alg</span><span·class="p"·data-group-id="5772002889-1">(</span><span·class="ss">crypto_aes</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"my·seed"</span><span·class="p"·data-group-id="5772002889-1">)</span><span·class="p">,</span><span·class="w"> |
| 5417 | </span><span·class="n">IntegerValue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">uniform</span><span·class="p"·data-group-id=" | 5417 | </span><span·class="n">IntegerValue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">uniform</span><span·class="p"·data-group-id="5772002889-2">(</span><span·class="mi">42</span><span·class="p"·data-group-id="5772002889-2">)</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%·[1;·42]</span><span·class="w"> |
| 5418 | </span><span·class="n">FloatValue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">uniform</span><span·class="p"·data-group-id=" | 5418 | </span><span·class="n">FloatValue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">uniform</span><span·class="p"·data-group-id="5772002889-3">(</span><span·class="p"·data-group-id="5772002889-3">)</span><span·class="p">,</span><span·class="w">·····</span><span·class="c1">%·[0.0;·1.0[</span><span·class="w"> |
| 5419 | </span><span·class="p">_</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">rand_seed_alg</span><span·class="p"·data-group-id=" | 5419 | </span><span·class="p">_</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">rand_seed_alg</span><span·class="p"·data-group-id="5772002889-4">(</span><span·class="ss">crypto_aes</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"my·seed"</span><span·class="p"·data-group-id="5772002889-4">)</span><span·class="p">,</span><span·class="w"> |
| 5420 | </span><span·class="n">IntegerValue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">uniform</span><span·class="p"·data-group-id=" | 5420 | </span><span·class="n">IntegerValue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">uniform</span><span·class="p"·data-group-id="5772002889-5">(</span><span·class="mi">42</span><span·class="p"·data-group-id="5772002889-5">)</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%·Same·values</span><span·class="w"> |
| 5421 | </span><span·class="n">FloatValue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">uniform</span><span·class="p"·data-group-id=" | 5421 | </span><span·class="n">FloatValue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">uniform</span><span·class="p"·data-group-id="5772002889-6">(</span><span·class="p"·data-group-id="5772002889-6">)</span><span·class="p">.</span><span·class="w">·····</span><span·class="c1">%·again</span></code></pre> |
| 5422 | ··</section> | 5422 | ··</section> |
| 5423 | </section> | 5423 | </section> |
| 5424 | <section·class="detail"·id="rand_seed_alg_s/1"> | 5424 | <section·class="detail"·id="rand_seed_alg_s/1"> |
| 5425 | ··<div·class="detail-header"> | 5425 | ··<div·class="detail-header"> |
| 5426 | ····<a·href="#rand_seed_alg_s/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 5426 | ····<a·href="#rand_seed_alg_s/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 5427 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 5427 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 5886, 20 lines modified | Offset 5886, 20 lines modified | ||
| 5886 | ················cryptolib_version_compiled·=>·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>()·|·undefined, | 5886 | ················cryptolib_version_compiled·=>·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>()·|·undefined, |
| 5887 | ················cryptolib_version_linked·:=·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>(), | 5887 | ················cryptolib_version_linked·:=·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>(), |
| 5888 | ················link_type·:=·dynamic·|·static, | 5888 | ················link_type·:=·dynamic·|·static, |
| 5889 | ················otp_crypto_version·:=·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>()}.</pre> | 5889 | ················otp_crypto_version·:=·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>()}.</pre> |
| 5890 | ······</div> | 5890 | ······</div> |
| 5891 | <p>Get·information·about·crypto·and·the·OpenSSL·backend.</p><p>Returns·a·map·with·information·about·the·compilation·and·linking·of·crypto.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">info</span><span·class="p"·data-group-id=" | 5891 | <p>Get·information·about·crypto·and·the·OpenSSL·backend.</p><p>Returns·a·map·with·information·about·the·compilation·and·linking·of·crypto.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">info</span><span·class="p"·data-group-id="2184400495-1">(</span><span·class="p"·data-group-id="2184400495-1">)</span><span·class="p">.</span><span·class="w"> |
| 5892 | </span><span·class="p"·data-group-id=" | 5892 | </span><span·class="p"·data-group-id="2184400495-2">#{</span><span·class="ss">compile_type</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">normal</span><span·class="p">,</span><span·class="w"> |
| 5893 | ··</span><span·class="ss">cryptolib_version_compiled</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"OpenSSL·3.0.0·7·sep·2021"</span><span·class="p">,</span><span·class="w"> | 5893 | ··</span><span·class="ss">cryptolib_version_compiled</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"OpenSSL·3.0.0·7·sep·2021"</span><span·class="p">,</span><span·class="w"> |
| 5894 | ··</span><span·class="ss">cryptolib_version_linked</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"OpenSSL·3.0.0·7·sep·2021"</span><span·class="p">,</span><span·class="w"> | 5894 | ··</span><span·class="ss">cryptolib_version_linked</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"OpenSSL·3.0.0·7·sep·2021"</span><span·class="p">,</span><span·class="w"> |
| 5895 | ··</span><span·class="ss">link_type</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">dynamic</span><span·class="p">,</span><span·class="w"> | 5895 | ··</span><span·class="ss">link_type</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">dynamic</span><span·class="p">,</span><span·class="w"> |
| 5896 | ··</span><span·class="ss">otp_crypto_version</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"5.0.2"</span><span·class="p"·data-group-id=" | 5896 | ··</span><span·class="ss">otp_crypto_version</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"5.0.2"</span><span·class="p"·data-group-id="2184400495-2">}</span><span·class="w"> |
| 5897 | </span><span·class="mi">2</span><span·class="o">></span></code></pre><p>More·association·types·than·documented·may·be·present·in·the·map.</p> | 5897 | </span><span·class="mi">2</span><span·class="o">></span></code></pre><p>More·association·types·than·documented·may·be·present·in·the·map.</p> |
| 5898 | ··</section> | 5898 | ··</section> |
| 5899 | </section> | 5899 | </section> |
| 5900 | <section·class="detail"·id="info_fips/0"> | 5900 | <section·class="detail"·id="info_fips/0"> |
| 5901 | ··<div·class="detail-header"> | 5901 | ··<div·class="detail-header"> |
| 5902 | ····<a·href="#info_fips/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 5902 | ····<a·href="#info_fips/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 5954, 16 lines modified | Offset 5954, 16 lines modified | ||
| 5954 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·info_lib()·->·[{Name,·VerNum,·VerStr}] | 5954 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·info_lib()·->·[{Name,·VerNum,·VerStr}] |
| 5955 | ··················when·Name·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>(),·VerNum·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:integer/0">integer</a>(),·VerStr·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>().</pre> | 5955 | ··················when·Name·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>(),·VerNum·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:integer/0">integer</a>(),·VerStr·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>().</pre> |
| 5956 | ······</div> | 5956 | ······</div> |
| 5957 | <p>Get·the·name·and·version·of·the·libraries·used·by·crypto.</p><p><code·class="inline">Name</code>·is·the·name·of·the·library.·<code·class="inline">VerNum</code>·is·the·numeric·version·according·to | 5957 | <p>Get·the·name·and·version·of·the·libraries·used·by·crypto.</p><p><code·class="inline">Name</code>·is·the·name·of·the·library.·<code·class="inline">VerNum</code>·is·the·numeric·version·according·to |
| 5958 | the·library's·own·versioning·scheme.·<code·class="inline">VerStr</code>·contains·a·text·variant·of·the | 5958 | the·library's·own·versioning·scheme.·<code·class="inline">VerStr</code>·contains·a·text·variant·of·the |
| 5959 | version.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nf">info_lib</span><span·class="p"·data-group-id=" | 5959 | version.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nf">info_lib</span><span·class="p"·data-group-id="8987758321-1">(</span><span·class="p"·data-group-id="8987758321-1">)</span><span·class="p">.</span><span·class="w"> |
| 5960 | </span><span·class="p"·data-group-id=" | 5960 | </span><span·class="p"·data-group-id="8987758321-2">[</span><span·class="p"·data-group-id="8987758321-3">{</span><span·class="p"·data-group-id="8987758321-4"><<</span><span·class="s">"OpenSSL"</span><span·class="p"·data-group-id="8987758321-4">>></span><span·class="p">,</[·...·truncated·by·diffoscope;·len:·366,·SHA:·8e6f91769ccb80b7b3781f772abd1dcd2a8ed13eb76eb3dd9c131021b1e8f8b4·...·]1-2">]</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>From·OTP·R16·the·<em>numeric·version</em>·represents·the·version·of·the·OpenSSL |
| 5961 | <em>header·files</em>·(<code·class="inline">openssl/opensslv.h</code>)·used·when·crypto·was·compiled.·The·text | 5961 | <em>header·files</em>·(<code·class="inline">openssl/opensslv.h</code>)·used·when·crypto·was·compiled.·The·text |
| 5962 | variant·represents·the·libcrypto·library·used·at·runtime.·In·earlier·OTP | 5962 | variant·represents·the·libcrypto·library·used·at·runtime.·In·earlier·OTP |
| 5963 | versions·both·numeric·and·text·was·taken·from·the·library.</p></section> | 5963 | versions·both·numeric·and·text·was·taken·from·the·library.</p></section> |
| 5964 | ··</section> | 5964 | ··</section> |
| 5965 | </section> | 5965 | </section> |
| 5966 | <section·class="detail"·id="mod_pow/3"> | 5966 | <section·class="detail"·id="mod_pow/3"> |
| Offset 157, 50 lines modified | Offset 157, 50 lines modified | ||
| 157 | <h3·id="sign-with-an-engine-stored-private-key"·class="section-heading"> | 157 | <h3·id="sign-with-an-engine-stored-private-key"·class="section-heading"> |
| 158 | ··<a·href="#sign-with-an-engine-stored-private-key"·class="hover-link"> | 158 | ··<a·href="#sign-with-an-engine-stored-private-key"·class="hover-link"> |
| 159 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 159 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 160 | ··</a> | 160 | ··</a> |
| 161 | ··<span·class="text">Sign·with·an·engine·stored·private·key</span> | 161 | ··<span·class="text">Sign·with·an·engine·stored·private·key</span> |
| 162 | </h3> | 162 | </h3> |
| 163 | <p>This·example·shows·how·to·construct·a·key·reference·that·is·used·in·a·sign | 163 | <p>This·example·shows·how·to·construct·a·key·reference·that·is·used·in·a·sign |
| 164 | operation.·The·actual·key·is·stored·in·the·engine·that·is·loaded·at·prompt·1.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="p"·data-group-id=" | 164 | operation.·The·actual·key·is·stored·in·the·engine·that·is·loaded·at·prompt·1.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="p"·data-group-id="8908255613-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">EngineRef</span><span·class="p"·data-group-id="8908255613-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><sp[·...·truncated·by·diffoscope;·len:·276,·SHA:·2e5dea04131a59f127e1f0fc93af0674034fe60d495cd83fa41b23fafa3d39b1·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 165 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 165 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 166 | </span><span·class="p"·data-group-id=" | 166 | </span><span·class="p"·data-group-id="8908255613-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p">#</span><span·class="n">Ref</span><span·class="o"><</span><span·class="mf">0.2399045421</span><span·class="p">.</span><span·class="mf">3028942852.173962</span><span·[·...·truncated·by·diffoscope;·len:·62,·SHA:·530fb916313f8aa543ccf2cd93cbeb28b5e8036b5c5b813e292ee5a93e174b43·...·]-3">}</span><span·class="gp·unselectable"> |
| 167 | 2>·</span><span·class="n">PrivKey</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 167 | 2>·</span><span·class="n">PrivKey</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="8908255613-4">#{</span><span·class="ss">engine</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="n">EngineRef</span><span·class="p">,</span><span·class="w"> |
| 168 | ···············</span><span·class="ss">key_id</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"id·of·the·private·key·in·Engine"</span><span·class="p"·data-group-id=" | 168 | ···············</span><span·class="ss">key_id</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"id·of·the·private·key·in·Engine"</span><span·class="p"·data-group-id="8908255613-4">}</span><span·class="p">.</span><span·class="w"> |
| 169 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="gp·unselectable"> | 169 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="gp·unselectable"> |
| 170 | 3>·</span><span·class="n">Signature</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">sign</span><span·class="p"·data-group-id=" | 170 | 3>·</span><span·class="n">Signature</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">sign</span><span·class="p"·data-group-id="8908255613-5">(</span><span·class="ss">rsa</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">sha</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8908255613-6"><<</span><span·class="s">"Th[·...·truncated·by·diffoscope;·len:·201,·SHA:·4fc5d23bf7d83804a29e0e04ebe196877c91393724cc4cfc537eb195a5c696ac·...·]-5">)</span><span·class="p">.</span><span·class="w"> |
| 171 | </span><span·class="p"·data-group-id=" | 171 | </span><span·class="p"·data-group-id="8908255613-7"><<</span><span·class="mi">65</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">125</span><span·class="p">,</span><span·class="mi">254</span><span·class="p">,</span><span·class="mi">54</span><span·class="p">,</span><span·class="mi">233</span><span·class="p">,</span><span·class="mi">84</span><span·class="p">,</span><span·class="mi">77</span><span·class="p">,</span><span·class="mi">83</span><span·class="p">,</span><span·class="mi">63</span><span·class="p">,</span><span·class="mi">168</span><span·class="p">,</span><span·class="mi">28</span><span·class="p">,</span><span·class="mi">169</span><span·class="p">,</span><span·class="mi">214</span><span·class="p">,</span><span·class="mi">121</span><span·class="p">,</span><span·class="mi">76</span><span·class="p">,</span><span·class="w"> |
| 172 | ··</span><span·class="mi">207</span><span·class="p">,</span><span·class="mi">177</span><span·class="p">,</span><span·class="mi">124</span><span·class="p">,</span><span·class="mi">183</span><span·class="p">,</span><span·class="mi">156</span><span·class="p">,</span><span·class="mi">185</span><span·class="p">,</span><span·class="mi">160</span><span·class="p">,</span><span·class="mi">243</span><span·class="p">,</span><span·class="mi">36</span><span·class="p">,</span><span·class="mi">79</span><span·class="p">,</span><span·class="mi">125</span><span·class="p">,</span><span·class="mi">230</span><span·class="p">,</span><span·class="mi">231</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id=" | 172 | ··</span><span·class="mi">207</span><span·class="p">,</span><span·class="mi">177</span><span·class="p">,</span><span·class="mi">124</span><span·class="p">,</span><span·class="mi">183</span><span·class="p">,</span><span·class="mi">156</span><span·class="p">,</span><span·class="mi">185</span><span·class="p">,</span><span·class="mi">160</span><span·class="p">,</span><span·class="mi">243</span><span·class="p">,</span><span·class="mi">36</span><span·class="p">,</span><span·class="mi">79</span><span·class="p">,</span><span·class="mi">125</span><span·class="p">,</span><span·class="mi">230</span><span·class="p">,</span><span·class="mi">231</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="8908255613-7">>></span></code></pre><h3·id="verify-with-an-engine-stored-public-key"·class="section-heading"> |
| 173 | ··<a·href="#verify-with-an-engine-stored-public-key"·class="hover-link"> | 173 | ··<a·href="#verify-with-an-engine-stored-public-key"·class="hover-link"> |
| 174 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 174 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 175 | ··</a> | 175 | ··</a> |
| 176 | ··<span·class="text">Verify·with·an·engine·stored·public·key</span> | 176 | ··<span·class="text">Verify·with·an·engine·stored·public·key</span> |
| 177 | </h3> | 177 | </h3> |
| 178 | <p>Here·the·signature·and·message·in·the·last·example·is·verifyed·using·the·public | 178 | <p>Here·the·signature·and·message·in·the·last·example·is·verifyed·using·the·public |
| 179 | key.·The·public·key·is·stored·in·an·engine,·only·to·exemplify·that·it·is | 179 | key.·The·public·key·is·stored·in·an·engine,·only·to·exemplify·that·it·is |
| 180 | possible.·The·public·key·could·of·course·be·handled·openly·as·usual.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">4>·</span><span·class="n">PublicKey</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 180 | possible.·The·public·key·could·of·course·be·handled·openly·as·usual.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">4>·</span><span·class="n">PublicKey</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="9202241411-1">#{</span><span·class="ss">engine</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="n">EngineRef</span><span·class="p">,</span><span·class="w"> |
| 181 | ·················</span><span·class="ss">key_id</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"id·of·the·public·key·in·Engine"</span><span·class="p"·data-group-id=" | 181 | ·················</span><span·class="ss">key_id</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"id·of·the·public·key·in·Engine"</span><span·class="p"·data-group-id="9202241411-1">}</span><span·class="p">.</span><span·class="w"> |
| 182 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="gp·unselectable"> | 182 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="gp·unselectable"> |
| 183 | 5>·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">verify</span><span·class="p"·data-group-id=" | 183 | 5>·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">verify</span><span·class="p"·data-group-id="9202241411-2">(</span><span·class="ss">rsa</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">sha</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9202241411-3"><<</span><span·class="s">"Th[·...·truncated·by·diffoscope;·len:·283,·SHA:·42ed65f96520b1174937d5dbf97bab1427118300d41053c658c7d895393d1631·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 184 | </span><span·class="ss">true</span><span·class="w"> | 184 | </span><span·class="ss">true</span><span·class="w"> |
| 185 | </span><span·class="mi">6</span><span·class="o">></span></code></pre><h3·id="using-a-password-protected-private-key"·class="section-heading"> | 185 | </span><span·class="mi">6</span><span·class="o">></span></code></pre><h3·id="using-a-password-protected-private-key"·class="section-heading"> |
| 186 | ··<a·href="#using-a-password-protected-private-key"·class="hover-link"> | 186 | ··<a·href="#using-a-password-protected-private-key"·class="hover-link"> |
| 187 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 187 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 188 | ··</a> | 188 | ··</a> |
| 189 | ··<span·class="text">Using·a·password·protected·private·key</span> | 189 | ··<span·class="text">Using·a·password·protected·private·key</span> |
| 190 | </h3> | 190 | </h3> |
| 191 | <p>The·same·example·as·the·first·sign·example,·except·that·a·password·protects·the | 191 | <p>The·same·example·as·the·first·sign·example,·except·that·a·password·protects·the |
| 192 | key·down·in·the·Engine.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">6>·</span><span·class="n">PrivKeyPwd</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 192 | key·down·in·the·Engine.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">6>·</span><span·class="n">PrivKeyPwd</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6060681748-1">#{</span><span·class="ss">engine</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="n">EngineRef</span><span·class="p">,</span><span·class="w"> |
| 193 | ··················</span><span·class="ss">key_id</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"id·of·the·pwd·protected·private·key·in·Engine"</span><span·class="p">,</span><span·class="w"> | 193 | ··················</span><span·class="ss">key_id</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"id·of·the·pwd·protected·private·key·in·Engine"</span><span·class="p">,</span><span·class="w"> |
| 194 | » » ··</span><span·class="ss">password</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"password"</span><span·class="p"·data-group-id=" | 194 | » » ··</span><span·class="ss">password</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"password"</span><span·class="p"·data-group-id="6060681748-1">}</span><span·class="p">.</span><span·class="w"> |
| 195 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="gp·unselectable"> | 195 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="gp·unselectable"> |
| 196 | 7>·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">sign</span><span·class="p"·data-group-id=" | 196 | 7>·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">sign</span><span·class="p"·data-group-id="6060681748-2">(</span><span·class="ss">rsa</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">sha</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6060681748-3"><<</span><span·class="s">"Th[·...·truncated·by·diffoscope;·len:·204,·SHA:·8819af8d338447502acdcd5fdede56f5e3c8ada28062a6ba86d8230fda261fd1·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 197 | </span><span·class="p"·data-group-id=" | 197 | </span><span·class="p"·data-group-id="6060681748-4"><<</span><span·class="mi">140</span><span·class="p">,</span><span·class="mi">80</span><span·class="p">,</span><span·class="mi">168</span><span·class="p">,</span><span·class="mi">101</span><span·class="p">,</span><span·class="mi">234</span><span·class="p">,</span><span·class="mi">211</span><span·class="p">,</span><span·class="mi">146</span><span·class="p">,</span><span·class="mi">183</span><span·class="p">,</span><span·class="mi">231</span><span·class="p">,</span><span·class="mi">190</span><span·class="p">,</span><span·class="mi">160</span><span·class="p">,</span><span·class="mi">82</span><span·class="p">,</span><span·class="mi">85</span><span·class="p">,</span><span·class="mi">163</span><span·class="p">,</span><span·class="w"> |
| 198 | ··</span><span·class="mi">175</span><span·class="p">,</span><span·class="mi">106</span><span·class="p">,</span><span·class="mi">77</span><span·class="p">,</span><span·class="mi">241</span><span·class="p">,</span><span·class="mi">141</span><span·class="p">,</span><span·class="mi">120</span><span·class="p">,</span><span·class="mi">72</span><span·class="p">,</span><span·class="mi">149</span><span·class="p">,</span><span·class="mi">181</span><span·class="p">,</span><span·class="mi">181</span><span·class="p">,</span><span·class="mi">194</span><span·class="p">,</span><span·class="mi">154</span><span·class="p">,</span><span·class="mi">175</span><span·class="p">,</span><span·class="mi">76</span><span·class="p">,</span><span·class="w"> | 198 | ··</span><span·class="mi">175</span><span·class="p">,</span><span·class="mi">106</span><span·class="p">,</span><span·class="mi">77</span><span·class="p">,</span><span·class="mi">241</span><span·class="p">,</span><span·class="mi">141</span><span·class="p">,</span><span·class="mi">120</span><span·class="p">,</span><span·class="mi">72</span><span·class="p">,</span><span·class="mi">149</span><span·class="p">,</span><span·class="mi">181</span><span·class="p">,</span><span·class="mi">181</span><span·class="p">,</span><span·class="mi">194</span><span·class="p">,</span><span·class="mi">154</span><span·class="p">,</span><span·class="mi">175</span><span·class="p">,</span><span·class="mi">76</span><span·class="p">,</span><span·class="w"> |
| 199 | ··</span><span·class="mi">223</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id=" | 199 | ··</span><span·class="mi">223</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="6060681748-4">>></span><span·class="w"> |
| 200 | </span><span·class="mi">8</span><span·class="o">></span></code></pre> | 200 | </span><span·class="mi">8</span><span·class="o">></span></code></pre> |
| 201 | </div> | 201 | </div> |
| 202 | <div·class="bottom-actions"·id="bottom-actions"> | 202 | <div·class="bottom-actions"·id="bottom-actions"> |
| 203 | ··<div·class="bottom-actions-item"> | 203 | ··<div·class="bottom-actions-item"> |
| 204 | ······<a·href="engine_load.html"·class="bottom-actions-button"·rel="prev"> | 204 | ······<a·href="engine_load.html"·class="bottom-actions-button"·rel="prev"> |
| Offset 148, 64 lines modified | Offset 148, 64 lines modified | ||
| 148 | <h3·id="dynamically-load-an-engine-from-default-directory"·class="section-heading"> | 148 | <h3·id="dynamically-load-an-engine-from-default-directory"·class="section-heading"> |
| 149 | ··<a·href="#dynamically-load-an-engine-from-default-directory"·class="hover-link"> | 149 | ··<a·href="#dynamically-load-an-engine-from-default-directory"·class="hover-link"> |
| 150 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 150 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 151 | ··</a> | 151 | ··</a> |
| 152 | ··<span·class="text">Dynamically·load·an·engine·from·default·directory</span> | 152 | ··<span·class="text">Dynamically·load·an·engine·from·default·directory</span> |
| 153 | </h3> | 153 | </h3> |
| 154 | <p>If·the·engine·is·located·in·the·OpenSSL/LibreSSL·installation·<code·class="inline">engines</code> | 154 | <p>If·the·engine·is·located·in·the·OpenSSL/LibreSSL·installation·<code·class="inline">engines</code> |
| 155 | directory.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="p"·data-group-id="7260929343-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Engine</span><span·class="p"·data-group-id="7260929343-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">engine_load</span><span·class="p"·data-group-id="7260929343-2">(</span><span·class="p"·data-group-id="7260929343-3"><<</span><span·class="s">"otp_test_engine"</span><span·class="p"·data-group-id="7260929343-3">>></span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7260929343-4">[</span><span·class="p"·data-group-id="7260929343-4">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7260929343-5">[</span><span·class="p"·data-group-id="7260929343-5">]</span><span·class="p"·data-group-id="7260929343-2">)</span><span·class="p">.</span><span·class="w"> | ||
| 156 | 155 | directory.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="p"·data-group-id="4529582222-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Engine</[·...·truncated·by·diffoscope;·len:·841,·SHA:·9ef41841956d890ade34bffa897affa3686409e619915d36cd23762d995fce5e·...·]"> | |
| 156 | ·</span><span·class="p"·data-group-id="4529582222-6">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p">#</span><span·class="n">Ref</span><span·class="p"·data-group-id="4529582222-6">}</span></code></pre><h3·id="load-an-engine-with-the-dynamic-engine"·class="section-heading"> | ||
| 157 | ··<a·href="#load-an-engine-with-the-dynamic-engine"·class="hover-link"> | 157 | ··<a·href="#load-an-engine-with-the-dynamic-engine"·class="hover-link"> |
| 158 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 158 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 159 | ··</a> | 159 | ··</a> |
| 160 | ··<span·class="text">Load·an·engine·with·the·dynamic·engine</span> | 160 | ··<span·class="text">Load·an·engine·with·the·dynamic·engine</span> |
| 161 | </h3> | 161 | </h3> |
| 162 | <p>Load·an·engine·with·the·help·of·the·dynamic·engine·by·giving·the·path·to·the | 162 | <p>Load·an·engine·with·the·help·of·the·dynamic·engine·by·giving·the·path·to·the |
| 163 | library.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">2</span><span·class="o">></span><span·class="w">·</span><span·class="p"·data-group-id=" | 163 | library.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">2</span><span·class="o">></span><span·class="w">·</span><span·class="p"·data-group-id="5638868677-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Engine</span><span·class="p"·data-group-id="5638868677-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·[·...·truncated·by·diffoscope;·len:·279,·SHA:·c99bee41bcf9fdbb6be0db8d08d0ea59cee19b95ecdde43be9edbd86c7fd8053·...·]-3">>></span><span·class="p">,</span><span·class="w"> |
| 164 | ······································</span><span·class="p"·data-group-id=" | 164 | ······································</span><span·class="p"·data-group-id="5638868677-4">[</span><span·class="p"·data-group-id="5638868677-5">{</span><span·class="p"·data-group-id="5638868677-6"><<</span><span·class="s">"SO_PATH"</span><span·class="p"·data-group-id="5638868677-6">>></span><span·class="p">,</span><span·class="w"> |
| 165 | ········································</span><span·class="p"·data-group-id=" | 165 | ········································</span><span·class="p"·data-group-id="5638868677-7"><<</span><span·class="s">"/some/path/otp_test_engine.so"</span><span·class="p"·data-group-id="5638868677-7">>></span><span·class="p"·data-group-id="5638868677-5">}</span><span·class="p">,</span><span·class="w"> |
| 166 | ·······································</span><span·class="p"·data-group-id=" | 166 | ·······································</span><span·class="p"·data-group-id="5638868677-8">{</span><span·class="p"·data-group-id="5638868677-9"><<</span><span·class="s">"ID"</span><span·class="p"·data-group-id="5638868677-9">>></span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·172,·SHA:·d3585d5133aca0eacae314bdc101107ac5b6def921b0497338398250057916fa·...·]-8">}</span><span·class="p">,</span><span·class="w"> |
| 167 | ·······································</span><span·class="p"·data-group-id=" | 167 | ·······································</span><span·class="p"·data-group-id="5638868677-11"><<</span><span·class="s">"LOAD"</span><span·class="p"·data-group-id="5638868677-11">>></span><span·class="p"·data-group-id="5638868677-4">]</span><span·class="p">,</span><span·class="w"> |
| 168 | ······································</span><span·class="p"·data-group-id=" | 168 | ······································</span><span·class="p"·data-group-id="5638868677-12">[</span><span·class="p"·data-group-id="5638868677-12">]</span><span·class="p"·data-group-id="5638868677-2">)</span><span·class="p">.</span><span·class="w"> |
| 169 | ·</span><span·class="p"·data-group-id=" | 169 | ·</span><span·class="p"·data-group-id="5638868677-13">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p">#</span><span·class="n">Ref</span><span·class="p"·data-group-id="5638868677-13">}</span></code></pre><h3·id="load-an-engine-and-replace-some-methods"·class="section-heading"> |
| 170 | ··<a·href="#load-an-engine-and-replace-some-methods"·class="hover-link"> | 170 | ··<a·href="#load-an-engine-and-replace-some-methods"·class="hover-link"> |
| 171 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 171 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 172 | ··</a> | 172 | ··</a> |
| 173 | ··<span·class="text">Load·an·engine·and·replace·some·methods</span> | 173 | ··<span·class="text">Load·an·engine·and·replace·some·methods</span> |
| 174 | </h3> | 174 | </h3> |
| 175 | <p>Load·an·engine·with·the·help·of·the·dynamic·engine·and·just·replace·some·engine | 175 | <p>Load·an·engine·with·the·help·of·the·dynamic·engine·and·just·replace·some·engine |
| 176 | methods.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">3</span><span·class="o">></span><span·class="w">·</span><span·class="p"·data-group-id="9830411992-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Engine</span><span·class="p"·data-group-id="9830411992-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">engine_load</span><span·class="p"·data-group-id="9830411992-2">(</span><span·class="p"·data-group-id="9830411992-3"><<</span><span·class="s">"dynamic"</span><span·class="p"·data-group-id="9830411992-3">>></span><span·class="p">,</span><span·class="w"> | ||
| 177 | 176 | methods.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">3</span><span·class="o">></span><span·class="w">·</span><span·class="p"·data-group-id="6581786091-1">{</span><span·class="ss">ok</span><span·class="p">,[·...·truncated·by·diffoscope;·len:·472,·SHA:·e727a501ed0a01114b29883c6cbf2e95ebab8f6d955b0538a43f0b4859389d4d·...·]">>></span><span·class="p">,</span><span·class="w"> | |
| 177 | ······································</span><span·class="p"·data-group-id="6581786091-4">[</span><span·class="p"·data-group-id="6581786091-5">{</span><span·class="p"·data-group-id="6581786091-6"><<</span><span·class="s">"SO_PATH"</span><span·class="p"·data-group-id="6581786091-6">>></span><span·class="p">,</span><span·class="w"> | ||
| 178 | ········································</span><span·class="p"·data-group-id=" | 178 | ········································</span><span·class="p"·data-group-id="6581786091-7"><<</span><span·class="s">"/some/path/otp_test_engine.so"</span><span·class="p"·data-group-id="6581786091-7">>></span><span·class="p"·data-group-id="6581786091-5">}</span><span·class="p">,</span><span·class="w"> |
| 179 | ·······································</span><span·class="p"·data-group-id=" | 179 | ·······································</span><span·class="p"·data-group-id="6581786091-8">{</span><span·class="p"·data-group-id="6581786091-9"><<</span><span·class="s">"ID"</span><span·class="p"·data-group-id="6581786091-9">>></span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·172,·SHA:·b39b86b50b4af195a02c78d8c2f7011007e1bde9646b2baa08610a32e0bab9b8·...·]-8">}</span><span·class="p">,</span><span·class="w"> |
| 180 | ·······································</span><span·class="p"·data-group-id=" | 180 | ·······································</span><span·class="p"·data-group-id="6581786091-11"><<</span><span·class="s">"LOAD"</span><span·class="p"·data-group-id="6581786091-11">>></span><span·class="p"·data-group-id="6581786091-4">]</span><span·class="p">,</span><span·class="w"> |
| 181 | ······································</span><span·class="p"·data-group-id=" | 181 | ······································</span><span·class="p"·data-group-id="6581786091-12">[</span><span·class="p"·data-group-id="6581786091-12">]</span><span·class="p"·data-group-id="6581786091-2">)</span><span·class="p">.</span><span·class="w"> |
| 182 | </span><span·class="p"·data-group-id=" | 182 | </span><span·class="p"·data-group-id="6581786091-13">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p">#</span><span·class="n">Ref</span><span·class="p"·data-group-id="6581786091-13">}</span><span·class="gp·unselectable"> |
| 183 | 4>·</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">engine_register</span><span·class="p"·data-group-id=" | 183 | 4>·</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">engine_register</span><span·class="p"·data-group-id="6581786091-14">(</span><span·class="n">Engine</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6581786091-15">[</span><span·class="ss">engine_method_digests</span><span·class="p"·data-group-id="6581786091-15">]</span><sp[·...·truncated·by·diffoscope;·len:·38,·SHA:·3b27b5da03712d0deffd2e88620b0dac17cbe1bcc730ad4fc2d611d50d6a1355·...·]-14">)</span><span·class="p">.</span><span·class="w"> |
| 184 | </span><span·class="ss">ok</span></code></pre><h3·id="load-with-the-ensure-loaded-function"·class="section-heading"> | 184 | </span><span·class="ss">ok</span></code></pre><h3·id="load-with-the-ensure-loaded-function"·class="section-heading"> |
| 185 | ··<a·href="#load-with-the-ensure-loaded-function"·class="hover-link"> | 185 | ··<a·href="#load-with-the-ensure-loaded-function"·class="hover-link"> |
| 186 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 186 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 187 | ··</a> | 187 | ··</a> |
| 188 | ··<span·class="text">Load·with·the·ensure·loaded·function</span> | 188 | ··<span·class="text">Load·with·the·ensure·loaded·function</span> |
| 189 | </h3> | 189 | </h3> |
| 190 | <p>This·function·makes·sure·the·engine·is·loaded·just·once·and·the·ID·is·added·to | 190 | <p>This·function·makes·sure·the·engine·is·loaded·just·once·and·the·ID·is·added·to |
| 191 | the·internal·engine·list·of·OpenSSL.·The·following·calls·to·the·function·will | 191 | the·internal·engine·list·of·OpenSSL.·The·following·calls·to·the·function·will |
| 192 | check·if·the·ID·is·loaded·and·then·just·get·a·new·reference·to·the·engine.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">5</span><span·class="o">></span><span·class="w">·</span><span·class="p"·data-group-id=" | 192 | check·if·the·ID·is·loaded·and·then·just·get·a·new·reference·to·the·engine.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">5</span><span·class="o">></span><span·class="w">·</span><span·class="p"·data-group-id="6641063290-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Engine</span><span·class="p"·data-group-id="6641063290-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·[·...·truncated·by·diffoscope;·len:·284,·SHA:·51b0ee0870ef8f0a8f79aed862d4acc8f18990f958371a26291cda2690320269·...·]-3">>></span><span·class="p">,</span><span·class="w"> |
| 193 | ···············································</span><span·class="p"·data-group-id=" | 193 | ···············································</span><span·class="p"·data-group-id="6641063290-4"><<</span><span·class="s">"/some/path/otp_test_engine.so"</span><span·class="p"·data-group-id="6641063290-4">>></span><span·class="p"·data-group-id="6641063290-2">)</span><span·class="p">.</span><span·class="w"> |
| 194 | ·</span><span·class="p"·data-group-id=" | 194 | ·</span><span·class="p"·data-group-id="6641063290-5">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p">#</span><span·class="n">Ref</span><span·class="p"·data-group-id="6641063290-5">}</span></code></pre><p>To·remove·the·tag·from·the·OpenSSL·engine[·...·truncated·by·diffoscope;·len:·469,·SHA:·27239d5508c4ccfbcc9fb6b60bf3e09ba15e62c8a05b87fb92b5e1b00522c903·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 195 | ·</span><span·class="ss">ok</span></code></pre><p>To·unload·it·use·<a·href="crypto.html#engine_unload/1"><code·class="inline">crypto:engine_unload/1</code></a>·which·removes·the·references·to·the | 195 | ·</span><span·class="ss">ok</span></code></pre><p>To·unload·it·use·<a·href="crypto.html#engine_unload/1"><code·class="inline">crypto:engine_unload/1</code></a>·which·removes·the·references·to·the |
| 196 | engine.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">6</span><span·class="o">></span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">engine_unload</span><span·class="p"·data-group-id="2 | 196 | engine.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">6</span><span·class="o">></span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">engine_unload</span><span·class="p"·data-group-id="2045583554-1">(</span><span·class="n">Engine</span><span·class="p"·data-group-id="2045583554-1">)</span><span·class="p">.</span><span·class="w"> |
| 197 | ·</span><span·class="ss">ok</span></code></pre><h3·id="list-all-engines-currently-loaded"·class="section-heading"> | 197 | ·</span><span·class="ss">ok</span></code></pre><h3·id="list-all-engines-currently-loaded"·class="section-heading"> |
| 198 | ··<a·href="#list-all-engines-currently-loaded"·class="hover-link"> | 198 | ··<a·href="#list-all-engines-currently-loaded"·class="hover-link"> |
| 199 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 199 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 200 | ··</a> | 200 | ··</a> |
| 201 | ··<span·class="text">List·all·engines·currently·loaded</span> | 201 | ··<span·class="text">List·all·engines·currently·loaded</span> |
| 202 | </h3> | 202 | </h3> |
| 203 | <pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">8</span><span·class="o">></span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">engine_list</span><span·class="p"·data-group-id=" | 203 | <pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">8</span><span·class="o">></span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">engine_list</span><span·class="p"·data-group-id="6146287919-1">(</span><span·class="p"·data-group-id="6146287919-1">)</span><span·class="p">.</span><span·class="w"> |
| 204 | </span><span·class="p"·data-group-id=" | 204 | </span><span·class="p"·data-group-id="6146287919-2">[</span><span·class="p"·data-group-id="6146287919-3"><<</span><span·class="s">"dynamic"</span><span·class="p"·data-group-id="6146287919-3">>></span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-gro[·...·truncated·by·diffoscope;·len:·175,·SHA:·3b91ddbce4acc13699e59664e8402628396627a49784973164e608368e5bc03d·...·]-2">]</span></code></pre> |
| 205 | </div> | 205 | </div> |
| 206 | <div·class="bottom-actions"·id="bottom-actions"> | 206 | <div·class="bottom-actions"·id="bottom-actions"> |
| 207 | ··<div·class="bottom-actions-item"> | 207 | ··<div·class="bottom-actions-item"> |
| 208 | ······<a·href="fips.html"·class="bottom-actions-button"·rel="prev"> | 208 | ······<a·href="fips.html"·class="bottom-actions-button"·rel="prev"> |
| 209 | ········<span·class="subheader"> | 209 | ········<span·class="subheader"> |
| Offset 188, 111 lines modified | Offset 188, 111 lines modified | ||
| 188 | </h3> | 188 | </h3> |
| 189 | <p>The·functions·<a·href="crypto.html#crypto_init/4">crypto_init/4</a>·and | 189 | <p>The·functions·<a·href="crypto.html#crypto_init/4">crypto_init/4</a>·and |
| 190 | <a·href="crypto.html#crypto_update/2">crypto_update/2</a>·are·intended·to·be·used·for | 190 | <a·href="crypto.html#crypto_update/2">crypto_update/2</a>·are·intended·to·be·used·for |
| 191 | encrypting·or·decrypting·a·sequence·of·blocks.·First·one·call·of·<code·class="inline">crypto_init/4</code> | 191 | encrypting·or·decrypting·a·sequence·of·blocks.·First·one·call·of·<code·class="inline">crypto_init/4</code> |
| 192 | initialises·the·crypto·context.·One·or·more·calls·<code·class="inline">crypto_update/2</code>·does·the | 192 | initialises·the·crypto·context.·One·or·more·calls·<code·class="inline">crypto_update/2</code>·does·the |
| 193 | actual·encryption·or·decryption·for·each·block.</p><p>This·example·shows·first·the·encryption·of·two·blocks·and·then·decryptions·of | 193 | actual·encryption·or·decryption·for·each·block.</p><p>This·example·shows·first·the·encryption·of·two·blocks·and·then·decryptions·of |
| 194 | the·cipher·text,·but·divided·into·three·blocks·just·to·show·that·it·is·possible | 194 | the·cipher·text,·but·divided·into·three·blocks·just·to·show·that·it·is·possible |
| 195 | to·divide·the·plain·text·and·cipher·text·differently·for·some·ciphers:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">» </span><span·class="mi">1</span><span·class="o">></span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 195 | to·divide·the·plain·text·and·cipher·text·differently·for·some·ciphers:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">» </span><span·class="mi">1</span><span·class="o">></span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="0282813553-1">(</span><span·class="p"·data-group-id="0282813553-1">)</span><span·class="p">.</span><span·class="w"> |
| 196 | » </span><span·class="ss">ok</span><span·class="w"> | 196 | » </span><span·class="ss">ok</span><span·class="w"> |
| 197 | » </span><span·class="mi">2</span><span·class="o">></span><span·class="w">·</span><span·class="n">Key</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 197 | » </span><span·class="mi">2</span><span·class="o">></span><span·class="w">·</span><span·class="n">Key</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="0282813553-2"><<</span><span·class="mi">1</span><span·class="p">:</span><span·class="mi">128</span><span·class="p"·data-group-id="0282813553-2">>></span><span·class="p">.</span><span·class="w"> |
| 198 | » </span><span·class="p"·data-group-id=" | 198 | » </span><span·class="p"·data-group-id="0282813553-3"><<</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·[·...·truncated·by·diffoscope;·len:·574,·SHA:·cb1b6878a9a12115969da00263de030b5deb596a818e555ef7a80b6979d268f9·...·]-3">>></span><span·class="w"> |
| 199 | » </span><span·class="mi">3</span><span·class="o">></span><span·class="w">·</span><span·class="n">IV</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 199 | » </span><span·class="mi">3</span><span·class="o">></span><span·class="w">·</span><span·class="n">IV</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="0282813553-4"><<</span><span·class="mi">0</span><span·class="p">:</span><span·class="mi">128</span><span·class="p"·data-group-id="0282813553-4">>></span><span·class="p">.</span><span·class="w"> |
| 200 | » </span><span·class="p"·data-group-id=" | 200 | » </span><span·class="p"·data-group-id="0282813553-5"><<</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·[·...·truncated·by·diffoscope;·len:·574,·SHA:·de94b51070825d81af72c52676f1b8b6b746a6c0b1c285d0f19e171f0ccd1aad·...·]-5">>></span><span·class="w"> |
| 201 | » </span><span·class="mi">4</span><span·class="o">></span><span·class="w">·</span><span·class="n">StateEnc</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">crypto_init</span><span·class="p"·data-group-id=" | 201 | » </span><span·class="mi">4</span><span·class="o">></span><span·class="w">·</span><span·class="n">StateEnc</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">crypto_init</span><span·class="p"·data-group-id="0282813553-6">(</span><span·class="ss">aes_128_ctr</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Key</span><span·class="p">,</span><span·class="w">·</span><span·class="n">IV</span><span·class="p">,</span><span·class="w">·</span><spa[·...·truncated·by·diffoscope;·len:·65,·SHA:·0432a2660224d68e5de87697d93859e180cfe459b1a210796ae9c4ba941b6229·...·]-6">)</span><span·class="p">.</span><span·class="w">·</span><span·class="c1">%·encrypt·->·true</span><span·class="w"> |
| 202 | » </span><span·class="p">#</span><span·class="n">Ref</span><span·class="o"><</span><span·class="mf">0.3768901617</span><span·class="p">.</span><span·class="mf">1128660993.124047</span><span·class="o">></span><span·class="w"> | 202 | » </span><span·class="p">#</span><span·class="n">Ref</span><span·class="o"><</span><span·class="mf">0.3768901617</span><span·class="p">.</span><span·class="mf">1128660993.124047</span><span·class="o">></span><span·class="w"> |
| 203 | » </span><span·class="mi">5</span><span·class="o">></span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">crypto_update</span><span·class="p"·data-group-id=" | 203 | » </span><span·class="mi">5</span><span·class="o">></span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">crypto_update</span><span·class="p"·data-group-id="0282813553-7">(</span><span·class="n">StateEnc</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0282813553-8"><<</span><span·class="s">"First·bytes"</span><span·class="p"·data-group-id="0282813553-8">>[·...·truncated·by·diffoscope;·len:·52,·SHA:·2afc9e48121b2698ba597bafbc1f9dcd496d68cbd7e0c62a19e063747c5afc22·...·]-7">)</span><span·class="p">.</span><span·class="w"> |
| 204 | » </span><span·class="p"·data-group-id=" | 204 | » </span><span·class="p"·data-group-id="0282813553-9"><<</span><span·class="mi">67</span><span·class="p">,</span><span·class="mi">44</span><span·class="p">,</span><span·class="mi">216</span><span·class="p">,</span><span·class="mi">166</span><span·class="p">,</span><span·class="mi">25</span[·...·truncated·by·diffoscope;·len:·343,·SHA:·1c1bca45eb930a99f91fc9d2f84f61c1719057f9554c6ee6141f90552a3b41a8·...·]-9">>></span><span·class="w"> |
| 205 | » </span><span·class="mi">6</span><span·class="o">></span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">crypto_update</span><span·class="p"·data-group-id=" | 205 | » </span><span·class="mi">6</span><span·class="o">></span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">crypto_update</span><span·class="p"·data-group-id="0282813553-10">(</span><span·class="n">StateEnc</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0282813553-11"><<</span><span·class="s">"Second·bytes"</span><span·class="p"·data-group-id="0282813553-11">[·...·truncated·by·diffoscope;·len:·56,·SHA:·efb5510824f0a9b122254f2b17befb89e49c6a881cc626fddac3129f96ce807d·...·]-10">)</span><span·class="p">.</span><span·class="w"> |
| 206 | » </span><span·class="p"·data-group-id=" | 206 | » </span><span·class="p"·data-group-id="0282813553-12"><<</span><span·class="mi">16</span><span·class="p">,</span><span·class="mi">79</span><span·class="p">,</span><span·class="mi">94</span><span·class="p">,</span><span·class="mi">115</span><span·class="p">,</span><span·class="mi">234</spa[·...·truncated·by·diffoscope;·len:·397,·SHA:·bcf4412e69f8cdb51bb148413d6ffd664931c49c5fb4d84e03619a760edafd57·...·]-12">>></span><span·class="w"> |
| 207 | » </span><span·class="mi">7</span><span·class="o">></span><span·class="w"> | 207 | » </span><span·class="mi">7</span><span·class="o">></span><span·class="w"> |
| 208 | » </span><span·class="mi">7</span><span·class="o">></span><span·class="w">·</span><span·class="n">StateDec</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">crypto_init</span><span·class="p"·data-group-id=" | 208 | » </span><span·class="mi">7</span><span·class="o">></span><span·class="w">·</span><span·class="n">StateDec</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">crypto_init</span><span·class="p"·data-group-id="0282813553-13">(</span><span·class="ss">aes_128_ctr</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Key</span><span·class="p">,</span><span·class="w">·</span><span·class="n">IV</span><span·class="p">,</span><span·class="w">·</span><sp[·...·truncated·by·diffoscope;·len:·67,·SHA:·b5b3d1f2cb14f440d98237d48206bf7b0a44003b9c10f1bd243af57691375b76·...·]-13">)</span><span·class="p">.</span><span·class="w">·</span><span·class="c1">%·decrypt·->·false</span><span·class="w"> |
| 209 | » </span><span·class="p">#</span><span·class="n">Ref</span><span·class="o"><</span><span·class="mf">0.3768901617</span><span·class="p">.</span><span·class="mf">1128660994.124255</span><span·class="o">></span><span·class="w"> | 209 | » </span><span·class="p">#</span><span·class="n">Ref</span><span·class="o"><</span><span·class="mf">0.3768901617</span><span·class="p">.</span><span·class="mf">1128660994.124255</span><span·class="o">></span><span·class="w"> |
| 210 | » </span><span·class="mi">8</span><span·class="o">></span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">crypto_update</span><span·class="p"·data-group-id=" | 210 | » </span><span·class="mi">8</span><span·class="o">></span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">crypto_update</span><span·class="p"·data-group-id="0282813553-14">(</span><span·class="n">StateDec</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0282813553-15"><<</span><span·class="mi">67</span><span·class="p">,</span><span·class="mi">44</span><span·class="p">,[·...·truncated·by·diffoscope;·len:·339,·SHA:·464f438a7f2d9e68292f3cbed9af44b9eb95261743980e9f82e17c085c8d9345·...·]-14">)</span><span·class="p">.</span><span·class="w"> |
| 211 | » </span><span·class="p"·data-group-id=" | 211 | » </span><span·class="p"·data-group-id="0282813553-16"><<</span><span·class="s">"First·b"</span><span·class="p"·data-group-id="0282813553-16">>></span><span·class="w"> |
| 212 | » </span><span·class="mi">9</span><span·class="o">></span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">crypto_update</span><span·class="p"·data-group-id=" | 212 | » </span><span·class="mi">9</span><span·class="o">></span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">crypto_update</span><span·class="p"·data-group-id="0282813553-17">(</span><span·class="n">StateDec</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0282813553-18"><<</span><span·class="mi">5</span><span·class="p">,</span><span·class="mi">66</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">162</span><span·class="p">,</span><span·class="mi">16</span><span·class="p">,</span><span·class="mi">79</span><span·class="p">,</span><span·class="mi">94</span><span·class="p">,</span><span·class="mi">115</span><span·class="p">,</span><span·class="mi">234</span><span·class="p">,</span><span·class="mi">197</span><span·class="p">,</span><span·class="w"> |
| 213 | ········</span><span·class="mi">94</span><span·class="p">,</span><span·class="mi">253</span><span·class="p">,</span><span·class="mi">16</span><span·class="p">,</span><span·class="mi">144</span><span·class="p">,</span><span·class="mi">151</span><span·class="p"·data-group-id=" | 213 | ········</span><span·class="mi">94</span><span·class="p">,</span><span·class="mi">253</span><span·class="p">,</span><span·class="mi">16</span><span·class="p">,</span><span·class="mi">144</span><span·class="p">,</span><span·class="mi">151</span><span·class="p"·data-group-id="0282813553-18">>></span><span·class="p"·data-group-id="0282813553-17">)</span><span·class="p">.</span><span·class="w"> |
| 214 | » </span><span·class="p"·data-group-id=" | 214 | » </span><span·class="p"·data-group-id="0282813553-19"><<</span><span·class="s">"ytesSecond·byte"</span><span·class="p"·data-group-id="0282813553-19">>></span><span·class="w"> |
| 215 | » </span><span·class="mi">10</span><span·class="o">></span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">crypto_update</span><span·class="p"·data-group-id=" | 215 | » </span><span·class="mi">10</span><span·class="o">></span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">crypto_update</span><span·class="p"·data-group-id="0282813553-20">(</span><span·class="n">StateDec</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0282813553-21"><<</span><span·class="mi">41</span><span·class="p"·data-group-id="0282813553-21">>></span><span·[·...·truncated·by·diffoscope;·len:·35,·SHA:·4990a9d27892c2687d47b5b70faaeb8acde90d5f9f73c56533abbd82b327fbf0·...·]-20">)</span><span·class="p">.</span><span·class="w"> |
| 216 | » </span><span·class="p"·data-group-id=" | 216 | » </span><span·class="p"·data-group-id="0282813553-22"><<</span><span·class="s">"s"</span><span·class="p"·data-group-id="0282813553-22">>></span><span·class="w"> |
| 217 | » </span><span·class="mi">11</span><span·class="o">></span></code></pre><p>Note·that·the·internal·data·that·the·<code·class="inline">StateEnc</code>·and·<code·class="inline">StateDec</code>·references·are | 217 | » </span><span·class="mi">11</span><span·class="o">></span></code></pre><p>Note·that·the·internal·data·that·the·<code·class="inline">StateEnc</code>·and·<code·class="inline">StateDec</code>·references·are |
| 218 | destructivly·updated·by·the·calls·to | 218 | destructivly·updated·by·the·calls·to |
| 219 | <a·href="crypto.html#crypto_update/2">crypto_update/2</a>.·This·is·to·gain·time·in·the·calls | 219 | <a·href="crypto.html#crypto_update/2">crypto_update/2</a>.·This·is·to·gain·time·in·the·calls |
| 220 | of·the·nifs·interfacing·the·cryptolib.·In·a·loop·where·the·state·is·saved·in·the | 220 | of·the·nifs·interfacing·the·cryptolib.·In·a·loop·where·the·state·is·saved·in·the |
| 221 | loop's·state,·it·also·saves·one·update·of·the·loop·state·per·crypto·operation.</p><p>For·example,·a·simple·server·receiving·text·parts·to·encrypt·and·send·the·result | 221 | loop's·state,·it·also·saves·one·update·of·the·loop·state·per·crypto·operation.</p><p>For·example,·a·simple·server·receiving·text·parts·to·encrypt·and·send·the·result |
| 222 | back·to·the·one·who·sent·them·(the·<code·class="inline">Requester</code>):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">» </span><span·class="nf">encode</span><span·class="p"·data-group-id=" | 222 | back·to·the·one·who·sent·them·(the·<code·class="inline">Requester</code>):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">» </span><span·class="nf">encode</span><span·class="p"·data-group-id="8598854557-1">(</span><span·class="n">Crypto</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Key</span><span·class="p">,</span><span·class="w">·</span><span·class="n">IV</span><span·class="p"·data-group-id="8598854557-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 223 | » </span><span·class="nf">crypto_loop</span><span·class="p"·data-group-id=" | 223 | » </span><span·class="nf">crypto_loop</span><span·class="p"·data-group-id="8598854557-2">(</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">crypto_init</span><span·class="p"·data-group-id="8598854557-3">(</span><span·class="n">Crypto</span><span·class="p">,</span><span·class="w">·</span><span·class="n"[·...·truncated·by·diffoscope;·len:·254,·SHA:·b322432f19d348332fedf206a1588ff2e9696a1556795406c294843b18f9dbe8·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 224 | » </span><span·class="nf">crypto_loop</span><span·class="p"·data-group-id=" | 224 | » </span><span·class="nf">crypto_loop</span><span·class="p"·data-group-id="8598854557-4">(</span><span·class="n">State</span><span·class="p"·data-group-id="8598854557-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 225 | » </span><span·class="k">receive</span><span·class="w"> | 225 | » </span><span·class="k">receive</span><span·class="w"> |
| 226 | ········</span><span·class="p"·data-group-id=" | 226 | ········</span><span·class="p"·data-group-id="8598854557-5">{</span><span·class="n">Text</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Requester</span><span·class="p"·data-group-id="8598854557-5">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 227 | ········</span><span·class="n">Requester</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">crypto_update</span><span·class="p"·data-group-id=" | 227 | ········</span><span·class="n">Requester</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">crypto_update</span><span·class="p"·data-group-id="8598854557-6">(</span><span·class="n">State</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Text</span><span·class="p"·data-group-id="8598854557-6">)</span><span·class="p">,</span><span·class="w"> |
| 228 | » </span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 228 | » </span><span·class="nf">loop</span><span·class="p"·data-group-id="8598854557-7">(</span><span·class="n">State</span><span·class="p"·data-group-id="8598854557-7">)</span><span·class="w"> |
| 229 | » </span><span·class="k">end</span><span·class="p">.</span></code></pre><h3·id="example-of-crypto_one_time-5"·class="section-heading"> | 229 | » </span><span·class="k">end</span><span·class="p">.</span></code></pre><h3·id="example-of-crypto_one_time-5"·class="section-heading"> |
| 230 | ··<a·href="#example-of-crypto_one_time-5"·class="hover-link"> | 230 | ··<a·href="#example-of-crypto_one_time-5"·class="hover-link"> |
| 231 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 231 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 232 | ··</a> | 232 | ··</a> |
| 233 | ··<span·class="text">Example·of·crypto_one_time/5</span> | 233 | ··<span·class="text">Example·of·crypto_one_time/5</span> |
| 234 | </h3> | 234 | </h3> |
| 235 | <p>The·same·example·as·in·the | 235 | <p>The·same·example·as·in·the |
| 236 | <a·href="new_api.html#examples-of-crypto_init-4-and-crypto_update-2">previous·section</a>, | 236 | <a·href="new_api.html#examples-of-crypto_init-4-and-crypto_update-2">previous·section</a>, |
| 237 | but·now·with·one·call·to·<a·href="crypto.html#crypto_one_time/5">crypto_one_time/5</a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">» </span><span·class="mi">1</span><span·class="o">></span><span·class="w">·</span><span·class="n">Key</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6 | 237 | but·now·with·one·call·to·<a·href="crypto.html#crypto_one_time/5">crypto_one_time/5</a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">» </span><span·class="mi">1</span><span·class="o">></span><span·class="w">·</span><span·class="n">Key</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6673014847-1"><<</span><span·class="mi">1</span><span·class="p">:</span><span·class="mi">128</span><span·class="p"·data-group-id="6673014847-1">>></span><span·class="p">.</span><span·class="w"> |
| 238 | » </span><span·class="p"·data-group-id="6 | 238 | » </span><span·class="p"·data-group-id="6673014847-2"><<</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·c[·...·truncated·by·diffoscope;·len:·573,·SHA:·0785596b959352eef0bc42da7e3242617eafd42fe73800d9814c6287ed770889·...·]-2">>></span><span·class="w"> |
| 239 | » </span><span·class="mi">2</span><span·class="o">></span><span·class="w">·</span><span·class="n">IV</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6 | 239 | » </span><span·class="mi">2</span><span·class="o">></span><span·class="w">·</span><span·class="n">IV</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6673014847-3"><<</span><span·class="mi">0</span><span·class="p">:</span><span·class="mi">128</span><span·class="p"·data-group-id="6673014847-3">>></span><span·class="p">.</span><span·class="w"> |
| 240 | » </span><span·class="p"·data-group-id="6 | 240 | » </span><span·class="p"·data-group-id="6673014847-4"><<</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·c[·...·truncated·by·diffoscope;·len:·573,·SHA:·e920db61df7ec89d24bbd54cae056d5d264787b05032bb27fb1781097be141f6·...·]-4">>></span><span·class="w"> |
| 241 | » </span><span·class="mi">3</span><span·class="o">></span><span·class="w">·</span><span·class="n">Txt</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6 | 241 | » </span><span·class="mi">3</span><span·class="o">></span><span·class="w">·</span><span·class="n">Txt</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6673014847-5">[</span><span·class="p"·data-group-id="6673014847-6"><<</span><span·class="s">"First·bytes"</span><span·class="p"·data-group-id="6673014847-6">>></span><span·class="p">,</span><span·class="p"·data-group-id="6673014847-7">[·...·truncated·by·diffoscope;·len:·163,·SHA:·462e3eec0ed60b2b0ad5fd7b773c8fffa08b03bdb1838820e72656bbe66a9838·...·]-5">]</span><span·class="p">.</span><span·class="w"> |
| 242 | » </span><span·class="p"·data-group-id="6 | 242 | » </span><span·class="p"·data-group-id="6673014847-8">[</span><span·class="p"·data-group-id="6673014847-9"><<</span><span·class="s">"First·bytes"</span><span·class="p"·data-group-id="6673014847-9">>></span><span·class="p">,</span><span·class="p"·data-group-id="6673014847-10"[·...·truncated·by·diffoscope;·len:·165,·SHA:·a19af68bffeb1fb76585070aff8a4da3acfb2cccadbd44143133f0641f497643·...·]-8">]</span><span·class="w"> |
| 243 | » </span><span·class="mi">4</span><span·class="o">></span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">crypto_one_time</span><span·class="p"·data-group-id="6 | 243 | » </span><span·class="mi">4</span><span·class="o">></span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">crypto_one_time</span><span·class="p"·data-group-id="6673014847-11">(</span><span·class="ss">aes_128_ctr</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Key</span><span·class="p">,</span><span·class="w">·</span><span·class="n">IV</span><span·class="p">,</span><span·class="w">·</span><spa[·...·truncated·by·diffoscope;·len:·139,·SHA:·64540edaf97317544ac3806712d9b47e1b9dabccaec451ff2f2b802a54a99a95·...·]-11">)</span><span·class="p">.</span><span·class="w"> |
| 244 | » </span><span·class="p"·data-group-id="6 | 244 | » </span><span·class="p"·data-group-id="6673014847-12"><<</span><span·class="mi">67</span><span·class="p">,</span><span·class="mi">44</span><span·class="p">,</span><span·class="mi">216</span><span·class="p">,</span><span·class="mi">166</span><span·class="p">,</span><span·class="mi">25</span><span·class="p">,</span><span·class="mi">130</span><span·class="p">,</span><span·class="mi">203</span><span·class="p">,</span><span·class="mi">5</span><span·class="p">,</span><span·class="mi">66</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">162</span><span·class="p">,</span><span·class="mi">16</span><span·class="p">,</span><span·class="mi">79</span><span·class="p">,</span><span·class="mi">94</span><span·class="p">,</span><span·class="mi">115</span><span·class="p">,</span><span·class="mi">234</span><span·class="p">,</span><span·class="w"> |
| 245 | » </span><span·class="mi">197</span><span·class="p">,</span><span·class="mi">94</span><span·class="p">,</span><span·class="mi">253</span><span·class="p">,</span><span·class="mi">16</span><span·class="p">,</span><span·class="mi">144</span><span·class="p">,</span><span·class="mi">151</span><span·class="p">,</span><span·class="mi">41</span><span·class="p"·data-group-id="6 | 245 | » </span><span·class="mi">197</span><span·class="p">,</span><span·class="mi">94</span><span·class="p">,</span><span·class="mi">253</span><span·class="p">,</span><span·class="mi">16</span><span·class="p">,</span><span·class="mi">144</span><span·class="p">,</span><span·class="mi">151</span><span·class="p">,</span><span·class="mi">41</span><span·class="p"·data-group-id="6673014847-12">>></span><span·class="w"> |
| 246 | » </span><span·class="mi">5</span><span·class="o">></span></code></pre><p>The·<code·class="inline">[<<"First·bytes">>,<<"Second·bytes">>]</code>·could·of·course·have·been·one | 246 | » </span><span·class="mi">5</span><span·class="o">></span></code></pre><p>The·<code·class="inline">[<<"First·bytes">>,<<"Second·bytes">>]</code>·could·of·course·have·been·one |
| 247 | single·binary:·<code·class="inline"><<"First·bytesSecond·bytes">></code>.</p><h3·id="example-of-crypto_one_time_aead-6"·class="section-heading"> | 247 | single·binary:·<code·class="inline"><<"First·bytesSecond·bytes">></code>.</p><h3·id="example-of-crypto_one_time_aead-6"·class="section-heading"> |
| 248 | ··<a·href="#example-of-crypto_one_time_aead-6"·class="hover-link"> | 248 | ··<a·href="#example-of-crypto_one_time_aead-6"·class="hover-link"> |
| 249 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 249 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 250 | ··</a> | 250 | ··</a> |
| 251 | ··<span·class="text">Example·of·crypto_one_time_aead/6</span> | 251 | ··<span·class="text">Example·of·crypto_one_time_aead/6</span> |
| 252 | </h3> | 252 | </h3> |
| 253 | <p>The·same·example·as·in·the | 253 | <p>The·same·example·as·in·the |
| 254 | <a·href="new_api.html#example-of-crypto_one_time-5">previous·section</a>,·but·now·with·one | 254 | <a·href="new_api.html#example-of-crypto_one_time-5">previous·section</a>,·but·now·with·one |
| 255 | call·to·<a·href="crypto.html#crypto_one_time_aead/6">crypto_one_time_aead/6</a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">» </span><span·class="mi">1</span><span·class="o">></span><span·class="w">·</span><span·class="n">Key</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4 | 255 | call·to·<a·href="crypto.html#crypto_one_time_aead/6">crypto_one_time_aead/6</a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">» </span><span·class="mi">1</span><span·class="o">></span><span·class="w">·</span><span·class="n">Key</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4370678461-1"><<</span><span·class="mi">1</span><span·class="p">:</span><span·class="mi">128</span><span·class="p"·data-group-id="4370678461-1">>></span><span·class="p">.</span><span·class="w"> |
| 256 | » </span><span·class="p"·data-group-id="4 | 256 | » </span><span·class="p"·data-group-id="4370678461-2"><<</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·c[·...·truncated·by·diffoscope;·len:·573,·SHA:·27b5a3f33972d696bc56cc20315fd506ccc377734bbee67676bc1fb8c7a769a5·...·]-2">>></span><span·class="w"> |
| 257 | » </span><span·class="mi">2</span><span·class="o">></span><span·class="w">·</span><span·class="n">IV</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4 | 257 | » </span><span·class="mi">2</span><span·class="o">></span><span·class="w">·</span><span·class="n">IV</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4370678461-3"><<</span><span·class="mi">0</span><span·class="p">:</span><span·class="mi">128</span><span·class="p"·data-group-id="4370678461-3">>></span><span·class="p">.</span><span·class="w"> |
| 258 | » </span><span·class="p"·data-group-id="4 | 258 | » </span><span·class="p"·data-group-id="4370678461-4"><<</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·c[·...·truncated·by·diffoscope;·len:·573,·SHA:·a76f79ea192d525c85285b32e7febf0c112311d607f712f9d2e3703b6e99cdba·...·]-4">>></span><span·class="w"> |
| 259 | » </span><span·class="mi">3</span><span·class="o">></span><span·class="w">·</span><span·class="n">Txt</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4 | 259 | » </span><span·class="mi">3</span><span·class="o">></span><span·class="w">·</span><span·class="n">Txt</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4370678461-5">[</span><span·class="p"·data-group-id="4370678461-6"><<</span><span·class="s">"First·bytes"</span><span·class="p"·data-group-id="4370678461-6">>></span><span·class="p">,</span><span·class="p"·data-group-id="4370678461-7">[·...·truncated·by·diffoscope;·len:·163,·SHA:·5575e2c7b4c3411d1d97ac30f6d70320f34a45274e3c8c139ddb2b472bb65638·...·]-5">]</span><span·class="p">.</span><span·class="w"> |
| 260 | » </span><span·class="p"·data-group-id="4 | 260 | » </span><span·class="p"·data-group-id="4370678461-8">[</span><span·class="p"·data-group-id="4370678461-9"><<</span><span·class="s">"First·bytes"</span><span·class="p"·data-group-id="4370678461-9">>></span><span·class="p">,</span><span·class="p"·data-group-id="4370678461-10"[·...·truncated·by·diffoscope;·len:·165,·SHA:·e7f3c49494a319b29db2555d0c394403eedfdbedaaa1a61080b113143d9316da·...·]-8">]</span><span·class="w"> |
| 261 | » </span><span·class="mi">4</span><span·class="o">></span><span·class="w">·</span><span·class="n">AAD</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4 | 261 | » </span><span·class="mi">4</span><span·class="o">></span><span·class="w">·</span><span·class="n">AAD</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4370678461-11"><<</span><span·class="s">"Some·additional·auth·data"</span><span·class="p"·data-group-id="4370678461-11">>></span><span·class="p">.</span><span·class="w"> |
| 262 | » </span><span·class="p"·data-group-id="4 | 262 | » </span><span·class="p"·data-group-id="4370678461-12"><<</span><span·class="s">"Some·additional·auth·data"</span><span·class="p"·data-group-id="4370678461-12">>></span><span·class="w"> |
| 263 | » </span><span·class="mi">5</span><span·class="o">></span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">crypto_one_time_aead</span><span·class="p"·data-group-id="4 | 263 | » </span><span·class="mi">5</span><span·class="o">></span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">crypto_one_time_aead</span><span·class="p"·data-group-id="4370678461-13">(</span><span·class="ss">aes_128_gcm</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Key</span><span·class="p">,</span><span·class="w">·</span><span·class="n">IV</span><span·class="p">,</span><span·class="w">·</span><spa[·...·truncated·by·diffoscope;·len:·213,·SHA:·ff43e0736acfc53ba3ea675d843f3afa357791d114aa62739131bfe0e8d3eb6a·...·]-13">)</span><span·class="p">.</span><span·class="w"> |
| 264 | » </span><span·class="p"·data-group-id="4 | 264 | » </span><span·class="p"·data-group-id="4370678461-14">{</span><span·class="p"·data-group-id="4370678461-15"><<</span><span·class="mi">240</span><span·class="p">,</span><span·class="mi">130</span><span·class="p">,</span><span·class="mi">38</span><span·class="p">,</span><span·class="mi">96</span><span·class="p">,</span><span·class="mi">130</span><span·class="p">,</span><span·class="mi">241</span><span·class="p">,</span><span·class="mi">189</span><span·class="p">,</span><span·class="mi">52</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">190</span><span·class="p">,</span><span·class="mi">179</span><span·class="p">,</span><span·class="mi">213</span><span·class="p">,</span><span·class="mi">132</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">72</span><span·class="p">,</span><span·class="w"> |
| 265 | » </span><span·class="mi">192</span><span·class="p">,</span><span·class="mi">103</span><span·class="p">,</span><span·class="mi">176</span><span·class="p">,</span><span·class="mi">90</span><span·class="p">,</span><span·class="mi">104</span><span·class="p">,</span><span·class="mi">15</span><span·class="p">,</span><span·class="mi">71</span><span·class="p">,</span><span·class="mi">158</span><span·class="p"·data-group-id="4 | 265 | » </span><span·class="mi">192</span><span·class="p">,</span><span·class="mi">103</span><span·class="p">,</span><span·class="mi">176</span><span·class="p">,</span><span·class="mi">90</span><span·class="p">,</span><span·class="mi">104</span><span·class="p">,</span><span·class="mi">15</span><span·class="p">,</span><span·class="mi">71</span><span·class="p">,</span><span·class="mi">158</span><span·class="p"·data-group-id="4370678461-15">>></span><span·class="p">,</span><span·class="w"> |
| 266 | » </span><span·class="p"·data-group-id="4 | 266 | » </span><span·class="p"·data-group-id="4370678461-16"><<</span><span·class="mi">131</span><span·class="p">,</span><span·class="mi">47</span><span·class="p">,</span><span·class="mi">45</span><span·class="p">,</span><span·class="mi">91</span><span·class="p">,</span><span·class="mi">142</span[·...·truncated·by·diffoscope;·len:·656,·SHA:·20a298dc73e09480b006858af527d84167abfcc1c1f27183f8f4dd352e7667ad·...·]-14">}</span><span·class="w"> |
| 267 | » </span><span·class="mi">6</span><span·class="o">></span></code></pre><p>The·<code·class="inline">[<<"First·bytes">>,<<"Second·bytes">>]</code>·could·of·course·have·been·one | 267 | » </span><span·class="mi">6</span><span·class="o">></span></code></pre><p>The·<code·class="inline">[<<"First·bytes">>,<<"Second·bytes">>]</code>·could·of·course·have·been·one |
| 268 | single·binary:·<code·class="inline"><<"First·bytesSecond·bytes">></code>.</p><h3·id="example-of-mac_init-mac_update-and-mac_final"·class="section-heading"> | 268 | single·binary:·<code·class="inline"><<"First·bytesSecond·bytes">></code>.</p><h3·id="example-of-mac_init-mac_update-and-mac_final"·class="section-heading"> |
| 269 | ··<a·href="#example-of-mac_init-mac_update-and-mac_final"·class="hover-link"> | 269 | ··<a·href="#example-of-mac_init-mac_update-and-mac_final"·class="hover-link"> |
| 270 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 270 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 271 | ··</a> | 271 | ··</a> |
| 272 | ··<span·class="text">Example·of·mac_init·mac_update·and·mac_final</span> | 272 | ··<span·class="text">Example·of·mac_init·mac_update·and·mac_final</span> |
| 273 | </h3> | 273 | </h3> |
| 274 | <pre><code·class="makeup·erlang"·translate="no"><span·class="w">» </span><span·class="mi">1</span><span·class="o">></span><span·class="w">·</span><span·class="n">Key</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 274 | <pre><code·class="makeup·erlang"·translate="no"><span·class="w">» </span><span·class="mi">1</span><span·class="o">></span><span·class="w">·</span><span·class="n">Key</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="3053535166-1"><<</span><span·class="mi">1</span><span·class="p">:</span><span·class="mi">128</span><span·class="p"·data-group-id="3053535166-1">>></span><span·class="p">.</span><span·class="w"> |
| 275 | » </span><span·class="p"·data-group-id=" | 275 | » </span><span·class="p"·data-group-id="3053535166-2"><<</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·[·...·truncated·by·diffoscope;·len:·574,·SHA:·78550913e09e75d02214be7dc68f8fc7c647347e004608b1c640ee3c23e51191·...·]-2">>></span><span·class="w"> |
| 276 | » </span><span·class="mi">2</span><span·class="o">></span><span·class="w">·</span><span·class="n">StateMac</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">mac_init</span><span·class="p"·data-group-id=" | 276 | » </span><span·class="mi">2</span><span·class="o">></span><span·class="w">·</span><span·class="n">StateMac</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">mac_init</span><span·class="p"·data-group-id="3053535166-3">(</span><span·class="ss">cmac</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">aes_128_cbc</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Key</span><span·class="p"·data-group-id="3053535166-3">)</span><span·class="p">.</span><span·class="w"> |
| 277 | » </span><span·class="p">#</span><span·class="n">Ref</span><span·class="o"><</span><span·class="mf">0.2424664121</span><span·class="p">.</span><span·class="mf">2781478916.232610</span><span·class="o">></span><span·class="w"> | 277 | » </span><span·class="p">#</span><span·class="n">Ref</span><span·class="o"><</span><span·class="mf">0.2424664121</span><span·class="p">.</span><span·class="mf">2781478916.232610</span><span·class="o">></span><span·class="w"> |
| 278 | » </span><span·class="mi">3</span><span·class="o">></span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">mac_update</span><span·class="p"·data-group-id=" | 278 | » </span><span·class="mi">3</span><span·class="o">></span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">mac_update</span><span·class="p"·data-group-id="3053535166-4">(</span><span·class="n">StateMac</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3053535166-5"><<</span><span·class="s">"First·bytes"</span><span·class="p"·data-group-id="3053535166-5">>[·...·truncated·by·diffoscope;·len:·52,·SHA:·f1fe52b7cd6862e8e3ce6660c597fa400d6fd0d02cb374672e99f9413ecb7646·...·]-4">)</span><span·class="p">.</span><span·class="w"> |
| 279 | » </span><span·class="p">#</span><span·class="n">Ref</span><span·class="o"><</span><span·class="mf">0.2424664121</span><span·class="p">.</span><span·class="mf">2781478916.232610</span><span·class="o">></span><span·class="w"> | 279 | » </span><span·class="p">#</span><span·class="n">Ref</span><span·class="o"><</span><span·class="mf">0.2424664121</span><span·class="p">.</span><span·class="mf">2781478916.232610</span><span·class="o">></span><span·class="w"> |
| 280 | » </span><span·class="mi">4</span><span·class="o">></span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">mac_update</span><span·class="p"·data-group-id=" | 280 | » </span><span·class="mi">4</span><span·class="o">></span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">mac_update</span><span·class="p"·data-group-id="3053535166-6">(</span><span·class="n">StateMac</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"·"</span><span·class="p"·data-group-id="3053535166-6">)</span><span·class="p">.</span><span·class="w"> |
| 281 | » </span><span·class="p">#</span><span·class="n">Ref</span><span·class="o"><</span><span·class="mf">0.2424664121</span><span·class="p">.</span><span·class="mf">2781478916.232610</span><span·class="o">></span><span·class="w"> | 281 | » </span><span·class="p">#</span><span·class="n">Ref</span><span·class="o"><</span><span·class="mf">0.2424664121</span><span·class="p">.</span><span·class="mf">2781478916.232610</span><span·class="o">></span><span·class="w"> |
| 282 | » </span><span·class="mi">5</span><span·class="o">></span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">mac_update</span><span·class="p"·data-group-id=" | 282 | » </span><span·class="mi">5</span><span·class="o">></span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">mac_update</span><span·class="p"·data-group-id="3053535166-7">(</span><span·class="n">StateMac</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3053535166-8"><<</span><span·class="s">"last·bytes"</span><span·class="p"·data-group-id="3053535166-8">>&[·...·truncated·by·diffoscope;·len:·51,·SHA:·9b464d027e4af7dbc66dcff173fa44561ae96074a3b82a924815e572f2db6d86·...·]-7">)</span><span·class="p">.</span><span·class="w"> |
| 283 | » </span><span·class="p">#</span><span·class="n">Ref</span><span·class="o"><</span><span·class="mf">0.2424664121</span><span·class="p">.</span><span·class="mf">2781478916.232610</span><span·class="o">></span><span·class="w"> | 283 | » </span><span·class="p">#</span><span·class="n">Ref</span><span·class="o"><</span><span·class="mf">0.2424664121</span><span·class="p">.</span><span·class="mf">2781478916.232610</span><span·class="o">></span><span·class="w"> |
| 284 | » </span><span·class="mi">6</span><span·class="o">></span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">mac_final</span><span·class="p"·data-group-id=" | 284 | » </span><span·class="mi">6</span><span·class="o">></span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">mac_final</span><span·class="p"·data-group-id="3053535166-9">(</span><span·class="n">StateMac</span><span·class="p"·data-group-id="3053535166-9">)</span><span·class="p">.</span><span·class="w"> |
| 285 | » </span><span·class="p"·data-group-id=" | 285 | » </span><span·class="p"·data-group-id="3053535166-10"><<</span><span·class="mi">68</span><span·class="p">,</span><span·class="mi">191</span><span·class="p">,</span><span·class="mi">219</span><span·class="p">,</span><span·class="mi">128</span><span·class="p">,</span><span·class="mi">84</span><span·class="p">,</span><span·class="mi">77</span><span·class="p">,</span><span·class="mi">11</span><span·class="p">,</span><span·class="mi">193</span><span·class="p">,</span><span·class="mi">197</span><span·class="p">,</span><span·class="mi">238</span><span·class="p">,</span><span·class="mi">107</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">214</span><span·class="p">,</span><span·class="mi">141</span><span·class="p">,</span><span·class="mi">160</span><span·class="p">,</span><span·class="w"> |
| 286 | » </span><span·class="mi">249</span><span·class="p"·data-group-id=" | 286 | » </span><span·class="mi">249</span><span·class="p"·data-group-id="3053535166-10">>></span><span·class="w"> |
| 287 | » </span><span·class="mi">7</span><span·class="o">></span></code></pre><p>and·compare·the·result·with·a·single·calculation·just·for·this·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">» </span><span·class="mi">7</span><span·class="o">></span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">mac</span><span·class="p"·data-group-id=" | 287 | » </span><span·class="mi">7</span><span·class="o">></span></code></pre><p>and·compare·the·result·with·a·single·calculation·just·for·this·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">» </span><span·class="mi">7</span><span·class="o">></span><span·class="w">·</span><span·class="nc">crypto</span><span·class="p">:</span><span·class="nf">mac</span><span·class="p"·data-group-id="4662921461-1">(</span><span·class="ss">cmac</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">aes_128_cbc</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Key</span><span·class="p">,</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·97,·SHA:·b82365894019d0450bd790ea3b819680b0ecd88e4a5dcc95bff5d7ed1ecd8c3e·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 288 | » </span><span·class="p"·data-group-id=" | 288 | » </span><span·class="p"·data-group-id="4662921461-2"><<</span><span·class="mi">68</span><span·class="p">,</span><span·class="mi">191</span><span·class="p">,</span><span·class="mi">219</span><span·class="p">,</span><span·class="mi">128</span><span·class="p">,</span><span·class="mi">84</span><span·class="p">,</span><span·class="mi">77</span><span·class="p">,</span><span·class="mi">11</span><span·class="p">,</span><span·class="mi">193</span><span·class="p">,</span><span·class="mi">197</span><span·class="p">,</span><span·class="mi">238</span><span·class="p">,</span><span·class="mi">107</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">214</span><span·class="p">,</span><span·class="mi">141</span><span·class="p">,</span><span·class="mi">160</span><span·class="p">,</span><span·class="w"> |
| 289 | » </span><span·class="mi">249</span><span·class="p"·data-group-id=" | 289 | » </span><span·class="mi">249</span><span·class="p"·data-group-id="4662921461-2">>></span><span·class="w"> |
| 290 | » </span><span·class="mi">8</span><span·class="o">></span><span·class="w">·</span><span·class="nf">v</span><span·class="p"·data-group-id=" | 290 | » </span><span·class="mi">8</span><span·class="o">></span><span·class="w">·</span><span·class="nf">v</span><span·class="p"·data-group-id="4662921461-3">(</span><span·class="mi">7</span><span·class="p"·data-group-id="4662921461-3">)</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="nf">v</span><span·class="p"·data-group-id="4662921461-4">(</span><span[·...·truncated·by·diffoscope;·len:·61,·SHA:·8b206c4f144ee484d9430b4e791f87ef641ae565b9114c1ec6e0cdb3054fdf15·...·]-4">)</span><span·class="p">.</span><span·class="w"> |
| 291 | » </span><span·class="ss">true</span><span·class="w"> | 291 | » </span><span·class="ss">true</span><span·class="w"> |
| 292 | » </span><span·class="mi">9</span><span·class="o">></span></code></pre><h2·id="retired-cipher-names"·class="section-heading"> | 292 | » </span><span·class="mi">9</span><span·class="o">></span></code></pre><h2·id="retired-cipher-names"·class="section-heading"> |
| 293 | ··<a·href="#retired-cipher-names"·class="hover-link"> | 293 | ··<a·href="#retired-cipher-names"·class="hover-link"> |
| 294 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 294 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 295 | ··</a> | 295 | ··</a> |
| 296 | ··<span·class="text">Retired·cipher·names</span> | 296 | ··<span·class="text">Retired·cipher·names</span> |
| 297 | </h2> | 297 | </h2> |
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| 31 | dist/search_data-B | 31 | dist/search_data-B8379476.js |
| 32 | dist/sidebar_items-2E1AB7CA.js | 32 | dist/sidebar_items-2E1AB7CA.js |
| 33 | i.html | 33 | i.html |
| 34 | index.html | 34 | index.html |
| 35 | int.html | 35 | int.html |
| 36 | introduction.html | 36 | introduction.html |
| 37 | notes.html | 37 | notes.html |
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| 30 | ··<a·href="#fixed-bugs-and-malfunctions"·class="hover-link"> | 30 | ··<a·href="#fixed-bugs-and-malfunctions"·class="hover-link"> |
| 31 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 31 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 32 | ··</a> | 32 | ··</a> |
| 33 | ··<span·class="text">Fixed·Bugs·and·Malfunctions</span> | 33 | ··<span·class="text">Fixed·Bugs·and·Malfunctions</span> |
| 34 | </h3> | 34 | </h3> |
| 35 | <ul><li><p>Defining·a·fun·in·the·shell·using·the·syntax·<code·class="inline">fun·Name/Arity</code>·would·fail.·This·has·been·corrected·so·that·the·following·now·works:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="nb">is_atom</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">.</span><span·class="w"> | 35 | <ul><li><p>Defining·a·fun·in·the·shell·using·the·syntax·<code·class="inline">fun·Name/Arity</code>·would·fail.·This·has·been·corrected·so·that·the·following·now·works:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="nb">is_atom</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">.</span><span·class="w"> |
| 36 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="p">.</span><span·class="ss">erl</span><span·class="p">.</span><span·class="mf">42.18682967</span><span·class="o">></span><span·class="gp·unselectable"> | 36 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="p">.</span><span·class="ss">erl</span><span·class="p">.</span><span·class="mf">42.18682967</span><span·class="o">></span><span·class="gp·unselectable"> |
| 37 | >·</span><span·class="n">F</span><span·class="p"·data-group-id="85 | 37 | >·</span><span·class="n">F</span><span·class="p"·data-group-id="0856118055-1">(</span><span·class="ss">a</span><span·class="p"·data-group-id="0856118055-1">)</span><span·class="p">.</span><span·class="w"> |
| 38 | </span><span·class="ss">true</span><span·class="gp·unselectable"> | 38 | </span><span·class="ss">true</span><span·class="gp·unselectable"> |
| 39 | 3>·</span><span·class="n">Id</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">id</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">.</span><span·class="w"> | 39 | 3>·</span><span·class="n">Id</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">id</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">.</span><span·class="w"> |
| 40 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="p">.</span><span·class="ss">erl</span><span·class="p">.</span><span·class="mf">42.18682967</span><span·class="o">></span><span·class="gp·unselectable"> | 40 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="p">.</span><span·class="ss">erl</span><span·class="p">.</span><span·class="mf">42.18682967</span><span·class="o">></span><span·class="gp·unselectable"> |
| 41 | 4>·</span><span·class="n">Id</span><span·class="p"·data-group-id="85 | 41 | 4>·</span><span·class="n">Id</span><span·class="p"·data-group-id="0856118055-2">(</span><span·class="mi">42</span><span·class="p"·data-group-id="0856118055-2">)</span><span·class="p">.</span><span·class="w"> |
| 42 | </span><span·class="gt">**·exception·error:·undefined·shell·command·id/1</span><span·class="gp·unselectable"> | 42 | </span><span·class="gt">**·exception·error:·undefined·shell·command·id/1</span><span·class="gp·unselectable"> |
| 43 | 5>·</span><span·class="nf">id</span><span·class="p"·data-group-id="85 | 43 | 5>·</span><span·class="nf">id</span><span·class="p"·data-group-id="0856118055-3">(</span><span·class="n">I</span><span·class="p"·data-group-id="0856118055-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">I</span><span·class="p">.</span><span·class="w"> |
| 44 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 44 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 45 | 6>·</span><span·class="n">Id</span><span·class="p"·data-group-id="85 | 45 | 6>·</span><span·class="n">Id</span><span·class="p"·data-group-id="0856118055-4">(</span><span·class="mi">42</span><span·class="p"·data-group-id="0856118055-4">)</span><span·class="p">.</span><span·class="w"> |
| 46 | </span><span·class="mi">42</span></code></pre><p>The·Debugger·has·also·been·corrected·to·correctly·handle·this·syntax·for·a·BIF.</p><p>Own·Id:·OTP-19322·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8963"·title="">GH-8963</a>,·<a·href="https://github.com/erlang/otp/pull/8987"·title="">PR-8987</a></p></li></ul><h3·id="improvements-and-new-features"·class="section-heading"> | 46 | </span><span·class="mi">42</span></code></pre><p>The·Debugger·has·also·been·corrected·to·correctly·handle·this·syntax·for·a·BIF.</p><p>Own·Id:·OTP-19322·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8963"·title="">GH-8963</a>,·<a·href="https://github.com/erlang/otp/pull/8987"·title="">PR-8987</a></p></li></ul><h3·id="improvements-and-new-features"·class="section-heading"> |
| 47 | ··<a·href="#improvements-and-new-features"·class="hover-link"> | 47 | ··<a·href="#improvements-and-new-features"·class="hover-link"> |
| 48 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 48 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 49 | ··</a> | 49 | ··</a> |
| 50 | ··<span·class="text">Improvements·and·New·Features</span> | 50 | ··<span·class="text">Improvements·and·New·Features</span> |
| 51 | </h3> | 51 | </h3> |
| 52 | <ul><li><p>Erlang/OTP·type·specifications·has·been·updated·to·eliminate·overlapping·domains.</p><p>Own·Id:·OTP-19310·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8810"·title="">GH-8810</a>,·<a·href="https://github.com/erlang/otp/issues/8821"·title="">GH-8821</a>,·<a·href="https://github.com/erlang/otp/pull/8986"·title="">PR-8986</a></p></li></ul><h2·id="debugger-5-4"·class="section-heading"> | 52 | <ul><li><p>Erlang/OTP·type·specifications·has·been·updated·to·eliminate·overlapping·domains.</p><p>Own·Id:·OTP-19310·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8810"·title="">GH-8810</a>,·<a·href="https://github.com/erlang/otp/issues/8821"·title="">GH-8821</a>,·<a·href="https://github.com/erlang/otp/pull/8986"·title="">PR-8986</a></p></li></ul><h2·id="debugger-5-4"·class="section-heading"> |
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| 554 | ·························Args·::·[<a·href="../../../../lib/../erts/doc/html/erlang.html#t:term/0">term</a>()].</pre> | 554 | ·························Args·::·[<a·href="../../../../lib/../erts/doc/html/erlang.html#t:term/0">term</a>()].</pre> |
| 555 | ······</div> | 555 | ······</div> |
| 556 | <p>Sets·when·and·how·to·attach·automatically·to·a·process·executing·code | 556 | <p>Sets·when·and·how·to·attach·automatically·to·a·process·executing·code |
| 557 | in·interpreted·modules.</p><p>By·default·when·the·interpreter·is·started,·automatic·attach·is·disabled.</p><p>If·<code·class="inline">Flags</code>·is·an·empty·list,·automatic·attach·is·disabled.</p><p>Otherwise·<code·class="inline">Flags</code>·should·be·a·list·containing··at·least·one·of·the·following | 557 | in·interpreted·modules.</p><p>By·default·when·the·interpreter·is·started,·automatic·attach·is·disabled.</p><p>If·<code·class="inline">Flags</code>·is·an·empty·list,·automatic·attach·is·disabled.</p><p>Otherwise·<code·class="inline">Flags</code>·should·be·a·list·containing··at·least·one·of·the·following |
| 558 | flags:</p><ul><li><code·class="inline">init</code>·-·Attach·when·a·process·for·the·first·time·calls·an·interpreted | 558 | flags:</p><ul><li><code·class="inline">init</code>·-·Attach·when·a·process·for·the·first·time·calls·an·interpreted |
| 559 | function.</li><li><code·class="inline">break</code>·-·Attach·whenever·a·process·reaches·a·breakpoint.</li><li><code·class="inline">exit</code>·-·Attach·when·a·process·terminates.</li></ul><p>When·the·specified·event·occurs,·the·function·<code·class="inline">Function</code>·is·called·as:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nf">spawn</samp><samp·class="p"·data-group-id=" | 559 | function.</li><li><code·class="inline">break</code>·-·Attach·whenever·a·process·reaches·a·breakpoint.</li><li><code·class="inline">exit</code>·-·Attach·when·a·process·terminates.</li></ul><p>When·the·specified·event·occurs,·the·function·<code·class="inline">Function</code>·is·called·as:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nf">spawn</samp><samp·class="p"·data-group-id="2630313966-1">(</samp><samp·class="n">Module</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Name</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="p"·data-group-id="2630313966-2">[</samp><samp·class="n">Pid</samp><sa[·...·truncated·by·diffoscope;·len:·190,·SHA:·f8ca4139415abf85bae025921405e1c6e2ae46a7fecc424148daefdd1d372e04·...·]-1">)</samp></code></pre><p><code·class="inline">Pid</code>·is·the·pid·of·the·process·executing·interpreted·code.</p> |
| 560 | ··</section> | 560 | ··</section> |
| 561 | </section> | 561 | </section> |
| 562 | <section·class="detail"·id="break/2"> | 562 | <section·class="detail"·id="break/2"> |
| 563 | ··<div·class="detail-header"> | 563 | ··<div·class="detail-header"> |
| 564 | ····<a·href="#break/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 564 | ····<a·href="#break/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 565 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 565 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 25 | ······<section·id="moduledoc"·class="docstring"> | 25 | ······<section·id="moduledoc"·class="docstring"> |
| 26 | <p>Debugger/Interpreter·Interface.</p><p>The·<code·class="inline">i</code>·module·provides·short·forms·for·some·of·the·functions·used·by·the | 26 | <p>Debugger/Interpreter·Interface.</p><p>The·<code·class="inline">i</code>·module·provides·short·forms·for·some·of·the·functions·used·by·the |
| 27 | graphical·Debugger·and·some·of·the·functions·in·module·<a·href="int.xhtml"><code·class="inline">int</code></a>,·the·Erlang | 27 | graphical·Debugger·and·some·of·the·functions·in·module·<a·href="int.xhtml"><code·class="inline">int</code></a>,·the·Erlang |
| 28 | interpreter.</p><p>This·module·also·provides·facilities·for·displaying·status·information·about | 28 | interpreter.</p><p>This·module·also·provides·facilities·for·displaying·status·information·about |
| 29 | interpreted·processes·and·break·points.</p><p>It·is·possible·to·attach·to·interpreted·processes·by·only·giving·the·corresponding | 29 | interpreted·processes·and·break·points.</p><p>It·is·possible·to·attach·to·interpreted·processes·by·only·giving·the·corresponding |
| 30 | process·identity.·By·default,·an·attachment·window·is·displayed.·Processes | 30 | process·identity.·By·default,·an·attachment·window·is·displayed.·Processes |
| 31 | at·other·Erlang·nodes·can·be·attached·manually·or·automatically.</p><p>The·functions·in·this·module·are·defined·in·the·Erlang·shell.·That·is, | 31 | at·other·Erlang·nodes·can·be·attached·manually·or·automatically.</p><p>The·functions·in·this·module·are·defined·in·the·Erlang·shell.·That·is, |
| 32 | they·can·be·called·without·the·<code·class="inline">i:</code>·prefix.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="gp·unselectable">1>·</samp><samp·class="nf">ii</samp><samp·class="p"·data-group-id=" | 32 | they·can·be·called·without·the·<code·class="inline">i:</code>·prefix.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="gp·unselectable">1>·</samp><samp·class="nf">ii</samp><samp·class="p"·data-group-id="2477139624-1">(</samp><samp·class="ss">t</samp><samp·class="p"·data-group-id="2477139624-1">)</samp><samp·class="p">.</samp><samp·class="w"> |
| 33 | </samp><samp·class="p"·data-group-id=" | 33 | </samp><samp·class="p"·data-group-id="2477139624-2">{</samp><samp·class="ss">module</samp><samp·class="p">,</samp><samp·class="ss">t</samp><samp·class="p"·data-group-id="2477139624-2">}</samp><samp·class="gp·unselectable"> |
| 34 | 2>·</samp><samp·class="nf">iaa</samp><samp·class="p"·data-group-id=" | 34 | 2>·</samp><samp·class="nf">iaa</samp><samp·class="p"·data-group-id="2477139624-3">(</samp><samp·class="p"·data-group-id="2477139624-4">[</samp><samp·class="ss">init</samp><samp·class="p"·data-group-id="2477139624-4">]</samp><samp·class="p"·data-group-id="2477139624-3">)</samp><samp·class="p">.</samp><samp·class="w"> |
| 35 | </samp><samp·class="ss">true</samp></code></pre> | 35 | </samp><samp·class="ss">true</samp></code></pre> |
| 36 | ······</section> | 36 | ······</section> |
| 37 | ······<section·id="summary"·class="details-list"> | 37 | ······<section·id="summary"·class="details-list"> |
| 38 | ········<h1·class="section-heading">Summary</h1> | 38 | ········<h1·class="section-heading">Summary</h1> |
| 39 | <div·class="summary-functions·summary"> | 39 | <div·class="summary-functions·summary"> |
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| 160 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 160 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 161 | ··</a> | 161 | ··</a> |
| 162 | ··<span·class="text">Executable·Lines</span> | 162 | ··<span·class="text">Executable·Lines</span> |
| 163 | </h3> | 163 | </h3> |
| 164 | <p>To·have·an·effect,·a·breakpoint·must·be·set·at·an·<em>executable·line</em>,·which·is·a | 164 | <p>To·have·an·effect,·a·breakpoint·must·be·set·at·an·<em>executable·line</em>,·which·is·a |
| 165 | line·of·code·containing·an·executable·expression·such·as·a·matching·or·a | 165 | line·of·code·containing·an·executable·expression·such·as·a·matching·or·a |
| 166 | function·call.·A·blank·line·or·a·line·containing·a·comment,·function·head,·or | 166 | function·call.·A·blank·line·or·a·line·containing·a·comment,·function·head,·or |
| 167 | pattern·in·a·<code·class="inline">case</code>·statement·or·<code·class="inline">receive</code>·statement·is·not·executable.</p><p>In·the·following·example,·lines·2,·4,·6,·8,·and·11·are·executable·lines:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">1</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">is_loaded</span><span·class="p"·data-group-id=" | 167 | pattern·in·a·<code·class="inline">case</code>·statement·or·<code·class="inline">receive</code>·statement·is·not·executable.</p><p>In·the·following·example,·lines·2,·4,·6,·8,·and·11·are·executable·lines:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">1</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">is_loaded</span><span·class="p"·data-group-id="3124472875-1">(</span><span·class="n">Module</span><span·class="p">,</span><span·class="n">Compiled</span><span·class="p"·data-group-id="3124472875-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 168 | </span><span·class="mi">2</span><span·class="p">:</span><span·class="w">···</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">get_file</span><span·class="p"·data-group-id=" | 168 | </span><span·class="mi">2</span><span·class="p">:</span><span·class="w">···</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">get_file</span><span·class="p"·data-group-id="3124472875-2">(</span><span·class="n">Module</span><span·class="p">,</span><span·class="n">Compiled</span><span·class="p"·data-group-id="3124472875-2">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 169 | </span><span·class="mi">3</span><span·class="p">:</span><span·class="w">·····</span><span·class="p"·data-group-id=" | 169 | </span><span·class="mi">3</span><span·class="p">:</span><span·class="w">·····</span><span·class="p"·data-group-id="3124472875-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">File</span><span·class="p"·data-group-id="3124472875-3">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 170 | </span><span·class="mi">4</span><span·class="p">:</span><span·class="w">·······</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">code</span><span·class="p">:</span><span·class="nf">which</span><span·class="p"·data-group-id=" | 170 | </span><span·class="mi">4</span><span·class="p">:</span><span·class="w">·······</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">code</span><span·class="p">:</span><span·class="nf">which</span><span·class="p"·data-group-id="3124472875-4">(</span><span·class="n">Module</span><span·class="p"·data-group-id="3124472875-4">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 171 | </span><span·class="mi">5</span><span·class="p">:</span><span·class="w">·········</span><span·class="o">?</span><span·class="n">TAG</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 171 | </span><span·class="mi">5</span><span·class="p">:</span><span·class="w">·········</span><span·class="o">?</span><span·class="n">TAG</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 172 | </span><span·class="mi">6</span><span·class="p">:</span><span·class="w">···········</span><span·class="p"·data-group-id=" | 172 | </span><span·class="mi">6</span><span·class="p">:</span><span·class="w">···········</span><span·class="p"·data-group-id="3124472875-5">{</span><span·class="ss">loaded</span><span·class="p">,</span><span·class="n">File</span><span·class="p"·data-group-id="3124472875-5">}</span><span·class="p">;</span><span·class="w"> |
| 173 | </span><span·class="mi">7</span><span·class="p">:</span><span·class="w">·········</span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 173 | </span><span·class="mi">7</span><span·class="p">:</span><span·class="w">·········</span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 174 | </span><span·class="mi">8</span><span·class="p">:</span><span·class="w">···········</span><span·class="ss">unloaded</span><span·class="w"> | 174 | </span><span·class="mi">8</span><span·class="p">:</span><span·class="w">···········</span><span·class="ss">unloaded</span><span·class="w"> |
| 175 | </span><span·class="mi">9</span><span·class="p">:</span><span·class="w">·······</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> | 175 | </span><span·class="mi">9</span><span·class="p">:</span><span·class="w">·······</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> |
| 176 | </span><span·class="mi">10</span><span·class="p">:</span><span·class="w">····</span><span·class="ss">false</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 176 | </span><span·class="mi">10</span><span·class="p">:</span><span·class="w">····</span><span·class="ss">false</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 177 | </span><span·class="mi">11</span><span·class="p">:</span><span·class="w">······</span><span·class="ss">false</span><span·class="w"> | 177 | </span><span·class="mi">11</span><span·class="p">:</span><span·class="w">······</span><span·class="ss">false</span><span·class="w"> |
| 178 | </span><span·class="mi">12</span><span·class="p">:</span><span·class="w">··</span><span·class="k">end</span><span·class="p">.</span></code></pre><h3·id="status-and-trigger-action"·class="section-heading"> | 178 | </span><span·class="mi">12</span><span·class="p">:</span><span·class="w">··</span><span·class="k">end</span><span·class="p">.</span></code></pre><h3·id="status-and-trigger-action"·class="section-heading"> |
| 179 | ··<a·href="#status-and-trigger-action"·class="hover-link"> | 179 | ··<a·href="#status-and-trigger-action"·class="hover-link"> |
| Offset 204, 21 lines modified | Offset 204, 21 lines modified | ||
| 204 | returns·<code·class="inline">true</code>,·the·process·stops.·If·the·function·call·returns·<code·class="inline">false</code>,·the | 204 | returns·<code·class="inline">true</code>,·the·process·stops.·If·the·function·call·returns·<code·class="inline">false</code>,·the |
| 205 | breakpoint·is·silently·ignored.</p><p><code·class="inline">Bindings</code>·is·a·list·of·variable·bindings.·To·retrieve·the·value·of·<code·class="inline">Variable</code> | 205 | breakpoint·is·silently·ignored.</p><p><code·class="inline">Bindings</code>·is·a·list·of·variable·bindings.·To·retrieve·the·value·of·<code·class="inline">Variable</code> |
| 206 | (given·as·an·atom),·use·function | 206 | (given·as·an·atom),·use·function |
| 207 | <a·href="int.html#get_binding/2"><code·class="inline">int:get_binding(Variable,·Bindings)</code></a>.·The·function | 207 | <a·href="int.html#get_binding/2"><code·class="inline">int:get_binding(Variable,·Bindings)</code></a>.·The·function |
| 208 | returns·<code·class="inline">unbound</code>·or·<code·class="inline">{value,Value}</code>.</p><p><img·src="assets/cond_break_dialog.jpg"·alt="Conditional·Break·Dialog·Window"·title="Conditional·Break·Dialog·Window"/></p><p>Right-click·the·<em>Module</em>·entry·to·open·a·popup·menu·from·which·the·appropriate | 208 | returns·<code·class="inline">unbound</code>·or·<code·class="inline">{value,Value}</code>.</p><p><img·src="assets/cond_break_dialog.jpg"·alt="Conditional·Break·Dialog·Window"·title="Conditional·Break·Dialog·Window"/></p><p>Right-click·the·<em>Module</em>·entry·to·open·a·popup·menu·from·which·the·appropriate |
| 209 | module·can·be·selected.</p><p><em>Example:</em></p><p>A·conditional·breakpoint·calling·<code·class="inline">c_test:c_break/1</code>·is·added·at·line·6·in·module | 209 | module·can·be·selected.</p><p><em>Example:</em></p><p>A·conditional·breakpoint·calling·<code·class="inline">c_test:c_break/1</code>·is·added·at·line·6·in·module |
| 210 | <code·class="inline">fact</code>.·Each·time·the·breakpoint·is·reached,·the·function·is·called.·When·<code·class="inline">N</code>·is | 210 | <code·class="inline">fact</code>.·Each·time·the·breakpoint·is·reached,·the·function·is·called.·When·<code·class="inline">N</code>·is |
| 211 | equal·to·3,·the·function·returns·<code·class="inline">true</code>·and·the·process·stops.</p><p>Extract·from·<code·class="inline">fact.erl</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">5</span><span·class="p">.</span><span·class="w">·</span><span·class="nf">fac</span><span·class="p"·data-group-id=" | 211 | equal·to·3,·the·function·returns·<code·class="inline">true</code>·and·the·process·stops.</p><p>Extract·from·<code·class="inline">fact.erl</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">5</span><span·class="p">.</span><span·class="w">·</span><span·class="nf">fac</span><span·class="p"·data-group-id="0477530198-1">(</span><span·class="mi">0</span><span·class="p"·data-group-id="0477530198-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="mi">1</span><span·class="p">;</span><span·class="w"> |
| 212 | </span><span·class="mi">6</span><span·class="p">.</span><span·class="w">·</span><span·class="nf">fac</span><span·class="p"·data-group-id="2279519536-2">(</span><span·class="n">N</span><span·class="p"·data-group-id="2279519536-2">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="n">N</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">is_integer</span><span·class="p"·data-group-id="2279519536-3">(</span><span·class="n">N</span><span·class="p"·data-group-id="2279519536-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">N</span><span·class="w">·</span><span·class="o">*</span><span·class="w">·</span><span·class="nf">fac</span><span·class="p"·data-group-id="2279519536-4">(</span><span·class="n">N</span><span·class="o">-</span><span·class="mi">1</span><span·class="p"·data-group-id="2279519536-4">)</span><span·class="p">.</span></code></pre><p>Definition·of·<code·class="inline">c_test:c_break/1</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="5510709610-1">(</span><span·class="ss">c_test</span><span·class="p"·data-group-id="5510709610-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 213 | </span><span·class=" | 212 | </span><span·class="mi">6</span><span·class="p">.</span><span·class="w">·</span><span·class="nf">fac</span><span·class="p"·data-group-id="0477530198-2">(</span><span·class="n">N</span><span·class="p"·data-group-id="0477530198-2">)</span><span·class="w">·</span><span·class="k"[·...·truncated·by·diffoscope;·len:·1081,·SHA:·fa01d25660037c89e3c12570d100a1f3456bade483cc01a84dd41358403e0ed8·...·]">)</span><span·class="p">.</span><span·class="w"> |
| 213 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="4971323582-2">(</span><span·class="p"·data-group-id="4971323582-3">[</span><span·class="ss">c_break</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id="4971323582-3">]</span><span·class="p"·data-group-id="4971323582-2">)</span><span·class="p">.</span><span·class="w"> | ||
| 214 | </span><span·class="nf">c_break</span><span·class="p"·data-group-id=" | 214 | </span><span·class="nf">c_break</span><span·class="p"·data-group-id="4971323582-4">(</span><span·class="n">Bindings</span><span·class="p"·data-group-id="4971323582-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 215 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">int</span><span·class="p">:</span><span·class="nf">get_binding</span><span·class="p"·data-group-id=" | 215 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">int</span><span·class="p">:</span><span·class="nf">get_binding</span><span·class="p"·data-group-id="4971323582-5">(</span><span·class="ss">'N'</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Bindings</span><span·class="p"·data-group-id="4971323582-5">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 216 | ········</span><span·class="p"·data-group-id=" | 216 | ········</span><span·class="p"·data-group-id="4971323582-6">{</span><span·class="ss">value</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">3</span><span·class="p"·data-group-id="4971323582-6">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 217 | ············</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> | 217 | ············</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> |
| 218 | ········</span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 218 | ········</span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 219 | ············</span><span·class="ss">false</span><span·class="w"> | 219 | ············</span><span·class="ss">false</span><span·class="w"> |
| 220 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><h3·id="function-breakpoints"·class="section-heading"> | 220 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><h3·id="function-breakpoints"·class="section-heading"> |
| 221 | ··<a·href="#function-breakpoints"·class="hover-link"> | 221 | ··<a·href="#function-breakpoints"·class="hover-link"> |
| 222 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 222 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 223 | ··</a> | 223 | ··</a> |
| Offset 231, 20 lines modified | Offset 231, 20 lines modified | ||
| 231 | ··<a·href="#stack-trace"·class="hover-link"> | 231 | ··<a·href="#stack-trace"·class="hover-link"> |
| 232 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 232 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 233 | ··</a> | 233 | ··</a> |
| 234 | ··<span·class="text">Stack·Trace</span> | 234 | ··<span·class="text">Stack·Trace</span> |
| 235 | </h2> | 235 | </h2> |
| 236 | <p>The·Erlang·emulator·keeps·track·of·a·<em>stack·trace</em>,·information·about·recent | 236 | <p>The·Erlang·emulator·keeps·track·of·a·<em>stack·trace</em>,·information·about·recent |
| 237 | function·calls.·This·information·is·used·if·an·error·occurs,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="k">catch</span><span·class="w">·</span><span·class="ss">a</span><span·class="o">+</span><span·class="mi">1</span><span·class="p">.</span><span·class="w"> | 237 | function·calls.·This·information·is·used·if·an·error·occurs,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="k">catch</span><span·class="w">·</span><span·class="ss">a</span><span·class="o">+</span><span·class="mi">1</span><span·class="p">.</span><span·class="w"> |
| 238 | </span><span·class="p"·data-group-id=" | 238 | </span><span·class="p"·data-group-id="5225628568-1">{</span><span·class="ss">'EXIT'</span><span·class="p">,</span><span·class="p"·data-group-id="5225628568-2">{</span><span·class="ss">badarith</span><span·class="p">,</span><span·class="p"·data-group-id="5225628568-3">[</span><span·clas[·...·truncated·by·diffoscope;·len:·507,·SHA:·8f452f1a34f2a6036aad2ce35a3af8bbc041b2c629f2d05317fc4059ee4b01fc·...·]-4">}</span><span·class="p">,</span><span·class="w"> |
| 239 | ···················</span><span·class="p"·data-group-id=" | 239 | ···················</span><span·class="p"·data-group-id="5225628568-7">{</span><span·class="ss">erl_eval</span><span·class="p">,</span><span·class="ss">do_apply</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="p"·data-group-id="5225628568-8">[</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·490,·SHA:·b6d912b2533778ba1342b77b4b862248d29298d9cf5d9024c1872df55b9e5806·...·]-7">}</span><span·class="p">,</span><span·class="w"> |
| 240 | ···················</span><span·class="p"·data-group-id=" | 240 | ···················</span><span·class="p"·data-group-id="5225628568-11">{</span><span·class="ss">erl_eval</span><span·class="p">,</span><span·class="ss">expr</span><span·class="p">,</span><span·class="mi">5</span><span·class="p">,</span><span·class="p"·data-group-id="5225628568-12">[</span><span·class="p"·data-g[·...·truncated·by·diffoscope;·len:·491,·SHA:·dd70d1677f47169b1424948a06b26124dcfcf065a13849d6d65daae9a9083499·...·]-11">}</span><span·class="p">,</span><span·class="w"> |
| 241 | ···················</span><span·class="p"·data-group-id=" | 241 | ···················</span><span·class="p"·data-group-id="5225628568-15">{</span><span·class="ss">shell</span><span·class="p">,</span><span·class="ss">exprs</span><span·class="p">,</span><span·class="mi">7</span><span·class="p">,</span><span·class="p"·data-group-id="5225628568-16">[</span><span·class="p"·data-gro[·...·truncated·by·diffoscope;·len:·486,·SHA:·62970e7d32245f6f9fc29c3bbd23bff5b05641a94e8ab8b9ad9087461e144b9e·...·]-15">}</span><span·class="p">,</span><span·class="w"> |
| 242 | ···················</span><span·class="p"·data-group-id=" | 242 | ···················</span><span·class="p"·data-group-id="5225628568-19">{</span><span·class="ss">shell</span><span·class="p">,</span><span·class="ss">eval_exprs</span><span·class="p">,</span><span·class="mi">7</span><span·class="p">,</span><span·class="p"·data-group-id="5225628568-20">[</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·491,·SHA:·1fdd27d39453578afece2d13bd12d365781f0bfcb44b31d77268d0b958f05299·...·]-19">}</span><span·class="p">,</span><span·class="w"> |
| 243 | ···················</span><span·class="p"·data-group-id=" | 243 | ···················</span><span·class="p"·data-group-id="5225628568-23">{</span><span·class="ss">shell</span><span·class="p">,</span><span·class="ss">eval_loop</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="p"·data-group-id="5225628568-24">[</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·650,·SHA:·c87087b080f159f3e85fce3fb0f0b8d0b92f13704a16a483231e49ae25864b3e·...·]-1">}</span></code></pre><p>For·details·about·the·stack·trace,·see·section |
| 244 | <a·href="../../../../doc/system/errors.html">Errors·and·Error·Handling</a>·in·the·Erlang·Reference | 244 | <a·href="../../../../doc/system/errors.html">Errors·and·Error·Handling</a>·in·the·Erlang·Reference |
| 245 | Manual.</p><p>Debugger·emulates·the·stack·trace·by·keeping·track·of·recently·called | 245 | Manual.</p><p>Debugger·emulates·the·stack·trace·by·keeping·track·of·recently·called |
| 246 | interpreted·functions.·(The·real·stack·trace·cannot·be·used,·as·it·shows·which | 246 | interpreted·functions.·(The·real·stack·trace·cannot·be·used,·as·it·shows·which |
| 247 | functions·of·Debugger·have·been·called,·rather·than·which·interpreted | 247 | functions·of·Debugger·have·been·called,·rather·than·which·interpreted |
| 248 | functions.)</p><p>This·information·can·be·used·to·traverse·the·chain·of·function·calls,·using·the | 248 | functions.)</p><p>This·information·can·be·used·to·traverse·the·chain·of·function·calls,·using·the |
| 249 | <em>Up</em>·and·<em>Down</em>·buttons·in·the | 249 | <em>Up</em>·and·<em>Down</em>·buttons·in·the |
| 250 | <a·href="debugger_chapter.html#attach">Attach·Process·window</a>.</p><p>By·default,·Debugger·only·saves·information·about·recursive·function·calls,·that | 250 | <a·href="debugger_chapter.html#attach">Attach·Process·window</a>.</p><p>By·default,·Debugger·only·saves·information·about·recursive·function·calls,·that |
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| 130 | ····<section·id="moduledoc"> | 130 | ····<section·id="moduledoc"> |
| 131 | <p>Debugger/Interpreter·Interface.</p><p>The·<code·class="inline">i</code>·module·provides·short·forms·for·some·of·the·functions·used·by·the | 131 | <p>Debugger/Interpreter·Interface.</p><p>The·<code·class="inline">i</code>·module·provides·short·forms·for·some·of·the·functions·used·by·the |
| 132 | graphical·Debugger·and·some·of·the·functions·in·module·<a·href="int.html"><code·class="inline">int</code></a>,·the·Erlang | 132 | graphical·Debugger·and·some·of·the·functions·in·module·<a·href="int.html"><code·class="inline">int</code></a>,·the·Erlang |
| 133 | interpreter.</p><p>This·module·also·provides·facilities·for·displaying·status·information·about | 133 | interpreter.</p><p>This·module·also·provides·facilities·for·displaying·status·information·about |
| 134 | interpreted·processes·and·break·points.</p><p>It·is·possible·to·attach·to·interpreted·processes·by·only·giving·the·corresponding | 134 | interpreted·processes·and·break·points.</p><p>It·is·possible·to·attach·to·interpreted·processes·by·only·giving·the·corresponding |
| 135 | process·identity.·By·default,·an·attachment·window·is·displayed.·Processes | 135 | process·identity.·By·default,·an·attachment·window·is·displayed.·Processes |
| 136 | at·other·Erlang·nodes·can·be·attached·manually·or·automatically.</p><p>The·functions·in·this·module·are·defined·in·the·Erlang·shell.·That·is, | 136 | at·other·Erlang·nodes·can·be·attached·manually·or·automatically.</p><p>The·functions·in·this·module·are·defined·in·the·Erlang·shell.·That·is, |
| 137 | they·can·be·called·without·the·<code·class="inline">i:</code>·prefix.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nf">ii</span><span·class="p"·data-group-id=" | 137 | they·can·be·called·without·the·<code·class="inline">i:</code>·prefix.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nf">ii</span><span·class="p"·data-group-id="7306679688-1">(</span><span·class="ss">t</span><span·class="p"·data-group-id="7306679688-1">)</span><span·class="p">.</span><span·class="w"> |
| 138 | </span><span·class="p"·data-group-id=" | 138 | </span><span·class="p"·data-group-id="7306679688-2">{</span><span·class="ss">module</span><span·class="p">,</span><span·class="ss">t</span><span·class="p"·data-group-id="7306679688-2">}</span><span·class="gp·unselectable"> |
| 139 | 2>·</span><span·class="nf">iaa</span><span·class="p"·data-group-id=" | 139 | 2>·</span><span·class="nf">iaa</span><span·class="p"·data-group-id="7306679688-3">(</span><span·class="p"·data-group-id="7306679688-4">[</span><span·class="ss">init</span><span·class="p"·data-group-id="7306679688-4">]</span><span·class="p"·data-group-id="7306679688-3">)</span><span·class="p">.</span><span·class="w"> |
| 140 | </span><span·class="ss">true</span></code></pre> | 140 | </span><span·class="ss">true</span></code></pre> |
| 141 | ····</section> | 141 | ····</section> |
| 142 | </div> | 142 | </div> |
| 143 | ··<section·id="summary"·class="details-list"> | 143 | ··<section·id="summary"·class="details-list"> |
| 144 | ····<h1·class="section-heading"> | 144 | ····<h1·class="section-heading"> |
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| 670 | ·························Args·::·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>()].</pre> | 670 | ·························Args·::·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>()].</pre> |
| 671 | ······</div> | 671 | ······</div> |
| 672 | <p>Sets·when·and·how·to·attach·automatically·to·a·process·executing·code | 672 | <p>Sets·when·and·how·to·attach·automatically·to·a·process·executing·code |
| 673 | in·interpreted·modules.</p><p>By·default·when·the·interpreter·is·started,·automatic·attach·is·disabled.</p><p>If·<code·class="inline">Flags</code>·is·an·empty·list,·automatic·attach·is·disabled.</p><p>Otherwise·<code·class="inline">Flags</code>·should·be·a·list·containing··at·least·one·of·the·following | 673 | in·interpreted·modules.</p><p>By·default·when·the·interpreter·is·started,·automatic·attach·is·disabled.</p><p>If·<code·class="inline">Flags</code>·is·an·empty·list,·automatic·attach·is·disabled.</p><p>Otherwise·<code·class="inline">Flags</code>·should·be·a·list·containing··at·least·one·of·the·following |
| 674 | flags:</p><ul><li><code·class="inline">init</code>·-·Attach·when·a·process·for·the·first·time·calls·an·interpreted | 674 | flags:</p><ul><li><code·class="inline">init</code>·-·Attach·when·a·process·for·the·first·time·calls·an·interpreted |
| 675 | function.</li><li><code·class="inline">break</code>·-·Attach·whenever·a·process·reaches·a·breakpoint.</li><li><code·class="inline">exit</code>·-·Attach·when·a·process·terminates.</li></ul><p>When·the·specified·event·occurs,·the·function·<code·class="inline">Function</code>·is·called·as:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">spawn</span><span·class="p"·data-group-id=" | 675 | function.</li><li><code·class="inline">break</code>·-·Attach·whenever·a·process·reaches·a·breakpoint.</li><li><code·class="inline">exit</code>·-·Attach·when·a·process·terminates.</li></ul><p>When·the·specified·event·occurs,·the·function·<code·class="inline">Function</code>·is·called·as:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">spawn</span><span·class="p"·data-group-id="9604695750-1">(</span><span·class="n">Module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9604695750-2">[</span><span·class="n">Pid</span><sp[·...·truncated·by·diffoscope;·len:·190,·SHA:·a56603f894e3c92d921bd529b0f8daef05529758e74e47ddd5f48b12e49329d6·...·]-1">)</span></code></pre><p><code·class="inline">Pid</code>·is·the·pid·of·the·process·executing·interpreted·code.</p> |
| 676 | ··</section> | 676 | ··</section> |
| 677 | </section> | 677 | </section> |
| 678 | <section·class="detail"·id="break/2"> | 678 | <section·class="detail"·id="break/2"> |
| 679 | ··<div·class="detail-header"> | 679 | ··<div·class="detail-header"> |
| 680 | ····<a·href="#break/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 680 | ····<a·href="#break/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 681 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 681 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 135 | ··<a·href="#fixed-bugs-and-malfunctions"·class="hover-link"> | 135 | ··<a·href="#fixed-bugs-and-malfunctions"·class="hover-link"> |
| 136 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 136 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 137 | ··</a> | 137 | ··</a> |
| 138 | ··<span·class="text">Fixed·Bugs·and·Malfunctions</span> | 138 | ··<span·class="text">Fixed·Bugs·and·Malfunctions</span> |
| 139 | </h3> | 139 | </h3> |
| 140 | <ul><li><p>Defining·a·fun·in·the·shell·using·the·syntax·<code·class="inline">fun·Name/Arity</code>·would·fail.·This·has·been·corrected·so·that·the·following·now·works:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="nb">is_atom</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">.</span><span·class="w"> | 140 | <ul><li><p>Defining·a·fun·in·the·shell·using·the·syntax·<code·class="inline">fun·Name/Arity</code>·would·fail.·This·has·been·corrected·so·that·the·following·now·works:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="nb">is_atom</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">.</span><span·class="w"> |
| 141 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="p">.</span><span·class="ss">erl</span><span·class="p">.</span><span·class="mf">42.18682967</span><span·class="o">></span><span·class="gp·unselectable"> | 141 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="p">.</span><span·class="ss">erl</span><span·class="p">.</span><span·class="mf">42.18682967</span><span·class="o">></span><span·class="gp·unselectable"> |
| 142 | >·</span><span·class="n">F</span><span·class="p"·data-group-id=" | 142 | >·</span><span·class="n">F</span><span·class="p"·data-group-id="9318242105-1">(</span><span·class="ss">a</span><span·class="p"·data-group-id="9318242105-1">)</span><span·class="p">.</span><span·class="w"> |
| 143 | </span><span·class="ss">true</span><span·class="gp·unselectable"> | 143 | </span><span·class="ss">true</span><span·class="gp·unselectable"> |
| 144 | 3>·</span><span·class="n">Id</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">id</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">.</span><span·class="w"> | 144 | 3>·</span><span·class="n">Id</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">id</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">.</span><span·class="w"> |
| 145 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="p">.</span><span·class="ss">erl</span><span·class="p">.</span><span·class="mf">42.18682967</span><span·class="o">></span><span·class="gp·unselectable"> | 145 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="p">.</span><span·class="ss">erl</span><span·class="p">.</span><span·class="mf">42.18682967</span><span·class="o">></span><span·class="gp·unselectable"> |
| 146 | 4>·</span><span·class="n">Id</span><span·class="p"·data-group-id=" | 146 | 4>·</span><span·class="n">Id</span><span·class="p"·data-group-id="9318242105-2">(</span><span·class="mi">42</span><span·class="p"·data-group-id="9318242105-2">)</span><span·class="p">.</span><span·class="w"> |
| 147 | </span><span·class="gt">**·exception·error:·undefined·shell·command·id/1</span><span·class="gp·unselectable"> | 147 | </span><span·class="gt">**·exception·error:·undefined·shell·command·id/1</span><span·class="gp·unselectable"> |
| 148 | 5>·</span><span·class="nf">id</span><span·class="p"·data-group-id=" | 148 | 5>·</span><span·class="nf">id</span><span·class="p"·data-group-id="9318242105-3">(</span><span·class="n">I</span><span·class="p"·data-group-id="9318242105-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">I</span><span·class="p">.</span><span·class="w"> |
| 149 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 149 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 150 | 6>·</span><span·class="n">Id</span><span·class="p"·data-group-id=" | 150 | 6>·</span><span·class="n">Id</span><span·class="p"·data-group-id="9318242105-4">(</span><span·class="mi">42</span><span·class="p"·data-group-id="9318242105-4">)</span><span·class="p">.</span><span·class="w"> |
| 151 | </span><span·class="mi">42</span></code></pre><p>The·Debugger·has·also·been·corrected·to·correctly·handle·this·syntax·for·a·BIF.</p><p>Own·Id:·OTP-19322·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8963"·title="">GH-8963</a>,·<a·href="https://github.com/erlang/otp/pull/8987"·title="">PR-8987</a></p></li></ul><h3·id="improvements-and-new-features"·class="section-heading"> | 151 | </span><span·class="mi">42</span></code></pre><p>The·Debugger·has·also·been·corrected·to·correctly·handle·this·syntax·for·a·BIF.</p><p>Own·Id:·OTP-19322·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8963"·title="">GH-8963</a>,·<a·href="https://github.com/erlang/otp/pull/8987"·title="">PR-8987</a></p></li></ul><h3·id="improvements-and-new-features"·class="section-heading"> |
| 152 | ··<a·href="#improvements-and-new-features"·class="hover-link"> | 152 | ··<a·href="#improvements-and-new-features"·class="hover-link"> |
| 153 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 153 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 154 | ··</a> | 154 | ··</a> |
| 155 | ··<span·class="text">Improvements·and·New·Features</span> | 155 | ··<span·class="text">Improvements·and·New·Features</span> |
| 156 | </h3> | 156 | </h3> |
| 157 | <ul><li><p>Erlang/OTP·type·specifications·has·been·updated·to·eliminate·overlapping·domains.</p><p>Own·Id:·OTP-19310·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8810"·title="">GH-8810</a>,·<a·href="https://github.com/erlang/otp/issues/8821"·title="">GH-8821</a>,·<a·href="https://github.com/erlang/otp/pull/8986"·title="">PR-8986</a></p></li></ul><h2·id="debugger-5-4"·class="section-heading"> | 157 | <ul><li><p>Erlang/OTP·type·specifications·has·been·updated·to·eliminate·overlapping·domains.</p><p>Own·Id:·OTP-19310·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8810"·title="">GH-8810</a>,·<a·href="https://github.com/erlang/otp/issues/8821"·title="">GH-8821</a>,·<a·href="https://github.com/erlang/otp/pull/8986"·title="">PR-8986</a></p></li></ul><h2·id="debugger-5-4"·class="section-heading"> |
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| 118 | <div·id="search"> | 118 | <div·id="search"> |
| 119 | ··<h1> | 119 | ··<h1> |
| 120 | ····<span></span> | 120 | ····<span></span> |
| 121 | ··</h1> | 121 | ··</h1> |
| 122 | ··<div·class="loading"><div></div><div></div><div></div><div></div></div> | 122 | ··<div·class="loading"><div></div><div></div><div></div><div></div></div> |
| 123 | </div> | 123 | </div> |
| 124 | <script·src="dist/search_data-B | 124 | <script·src="dist/search_data-B8379476.js"></script> |
| 125 | ····<footer·class="footer"> | 125 | ····<footer·class="footer"> |
| 126 | ······<p> | 126 | ······<p> |
| 127 | ········<span·class="line"> | 127 | ········<span·class="line"> |
| 128 | ··········<button·class="a-main·footer-button·display-quick-switch"·title="Search·HexDocs·packages"> | 128 | ··········<button·class="a-main·footer-button·display-quick-switch"·title="Search·HexDocs·packages"> |
| 129 | ············Search·HexDocs | 129 | ············Search·HexDocs |
| 130 | ··········</button> | 130 | ··········</button> |
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| 1 | Zip·archive·data,·made·by·v6.1·UNIX,·extract·using·at·least·v1.0,·last·modified,·last·modified·Sun,·Mar·18·2025·0 | 1 | Zip·archive·data,·made·by·v6.1·UNIX,·extract·using·at·least·v1.0,·last·modified,·last·modified·Sun,·Mar·18·2025·08:51:56,·uncompressed·size·20,·method=store |
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| 266 | the·value·is·a·list,·it·is·used·as·is.·If·it·is·not·a·list,·it·is·put·into·a | 266 | the·value·is·a·list,·it·is·used·as·is.·If·it·is·not·a·list,·it·is·put·into·a |
| 267 | list.</p><p>The·list·is·appended·to·any·options·given·to·<a·href="#run/1"><code·class="inline">run/1</code></a>·or·on·the·command·line.</p><p>The·list·can·be·retrieved·with·<a·href="../../../../lib/compiler-8.6/doc/html/compile.html#env_compiler_options/0"><code·class="inline">compile:env_compiler_options/0</code></a>.</p><p>Currently·the·only·option·used·is·the | 267 | list.</p><p>The·list·is·appended·to·any·options·given·to·<a·href="#run/1"><code·class="inline">run/1</code></a>·or·on·the·command·line.</p><p>The·list·can·be·retrieved·with·<a·href="../../../../lib/compiler-8.6/doc/html/compile.html#env_compiler_options/0"><code·class="inline">compile:env_compiler_options/0</code></a>.</p><p>Currently·the·only·option·used·is·the |
| 268 | <a·href="dialyzer.html#error_location"><code·class="inline">error_location</code></a>·option.</p><p><em>Dialyzer·configuration·file:</em></p><p>Dialyzer's·configuration·file·may·also·be·used·to·augment·the·default·options | 268 | <a·href="dialyzer.html#error_location"><code·class="inline">error_location</code></a>·option.</p><p><em>Dialyzer·configuration·file:</em></p><p>Dialyzer's·configuration·file·may·also·be·used·to·augment·the·default·options |
| 269 | and·those·given·directly·to·the·Dialyzer·command.·It·is·commonly·used·to·avoid | 269 | and·those·given·directly·to·the·Dialyzer·command.·It·is·commonly·used·to·avoid |
| 270 | repeating·options·which·would·otherwise·need·to·be·given·explicitly·to·Dialyzer | 270 | repeating·options·which·would·otherwise·need·to·be·given·explicitly·to·Dialyzer |
| 271 | on·every·invocation.</p><p>The·location·of·the·configuration·file·can·be·set·via·the·<code·class="inline">DIALYZER_CONFIG</code> | 271 | on·every·invocation.</p><p>The·location·of·the·configuration·file·can·be·set·via·the·<code·class="inline">DIALYZER_CONFIG</code> |
| 272 | environment·variable,·and·defaults·to·within·the·<code·class="inline">user_config</code>·from | 272 | environment·variable,·and·defaults·to·within·the·<code·class="inline">user_config</code>·from |
| 273 | <a·href="../../../../lib/stdlib-6.2.1/doc/html/filename.html#basedir/3"><code·class="inline">filename:basedir/3</code></a>.</p><p>An·example·configuration·file's·contents·might·be:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">······</span><span·class="p"·data-group-id=" | 273 | <a·href="../../../../lib/stdlib-6.2.1/doc/html/filename.html#basedir/3"><code·class="inline">filename:basedir/3</code></a>.</p><p>An·example·configuration·file's·contents·might·be:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">······</span><span·class="p"·data-group-id="1717683194-1">{</span><span·class="ss">incremental</span><span·class="p">,</span><span·class="w"> |
| 274 | ········</span><span·class="p"·data-group-id=" | 274 | ········</span><span·class="p"·data-group-id="1717683194-2">{</span><span·class="ss">default_apps</span><span·class="p">,</span><span·class="p"·data-group-id="1717683194-3">[</span><span·class="ss">stdlib</span><span·class="p">,</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="[·...·truncated·by·diffoscope;·len:·109,·SHA:·8dad5a9f9ac64a63ac1cd8d511bd278fe4aec303128cdac158fb6bdc9a04c1fd·...·]-2">}</span><span·class="p">,</span><span·class="w"> |
| 275 | ········</span><span·class="p"·data-group-id=" | 275 | ········</span><span·class="p"·data-group-id="1717683194-4">{</span><span·class="ss">default_warning_apps</span><span·class="p">,</span><span·class="p"·data-group-id="1717683194-5">[</span><span·class="ss">stdlib</span><span·class="p"·data-group-id="1717683194-5">]</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·11,·SHA:·26ff45841126071f7d653e319da7f2d8c66275d215aa2eeb6711a0f2857a1d3b·...·]-4">}</span><span·class="w"> |
| 276 | ······</span><span·class="p"·data-group-id=" | 276 | ······</span><span·class="p"·data-group-id="1717683194-1">}</span><span·class="p">.</span><span·class="w"> |
| 277 | ······</span><span·class="p"·data-group-id=" | 277 | ······</span><span·class="p"·data-group-id="1717683194-6">{</span><span·class="ss">warnings</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1717683194-7">[</span><span·class="ss">no_improper_lists</span><span·class="p"·data-group-id="1717683194-7">]</span><span·c[·...·truncated·by·diffoscope;·len:·34,·SHA:·b26057803b640fa36e06bfabf05c39cf6a380d4f212bb78bbc3b06e98992a393·...·]-6">}</span><span·class="p">.</span><span·class="w"> |
| 278 | ······</span><span·class="p"·data-group-id=" | 278 | ······</span><span·class="p"·data-group-id="1717683194-8">{</span><span·class="ss">add_pathsa</span><span·class="p">,</span><span·class="p"·data-group-id="1717683194-9">[</span><span·class="s">"/users/samwise/potatoes/ebin"</span><span·class="p"·data-group-id="1717683194-9">]</span><span·c[·...·truncated·by·diffoscope;·len:·34,·SHA:·b26057803b640fa36e06bfabf05c39cf6a380d4f212bb78bbc3b06e98992a393·...·]-8">}</span><span·class="p">.</span><span·class="w"> |
| 279 | ······</span><span·class="p"·data-group-id=" | 279 | ······</span><span·class="p"·data-group-id="1717683194-10">{</span><span·class="ss">add_pathsz</span><span·class="p">,</span><span·class="p"·data-group-id="1717683194-11">[</span><span·class="s">"/users/smeagol/fish/ebin"</span><span·class="p"·data-group-id="1717683194-11">]</span><span·cl[·...·truncated·by·diffoscope;·len:·33,·SHA:·51c084fe32059b4401259d46c12c3d7bc66740139999c45e73904983e15cf61b·...·]-10">}</span><span·class="p">.</span></code></pre><p><a·href=""·id="suppression"></a></p><h2·id="module-requesting-or-suppressing-warnings-in-source-files"·class="section-heading"> |
| 280 | ··<a·href="#module-requesting-or-suppressing-warnings-in-source-files"·class="hover-link"> | 280 | ··<a·href="#module-requesting-or-suppressing-warnings-in-source-files"·class="hover-link"> |
| 281 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 281 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 282 | ··</a> | 282 | ··</a> |
| 283 | ··<span·class="text">Requesting·or·Suppressing·Warnings·in·Source·Files</span> | 283 | ··<span·class="text">Requesting·or·Suppressing·Warnings·in·Source·Files</span> |
| 284 | </h2> | 284 | </h2> |
| 285 | <p>Attribute·<code·class="inline">-dialyzer()</code>·can·be·used·for·turning·off·warnings·in·a·module·by | 285 | <p>Attribute·<code·class="inline">-dialyzer()</code>·can·be·used·for·turning·off·warnings·in·a·module·by |
| 286 | specifying·functions·or·warning·options.·For·example,·to·turn·off·all·warnings | 286 | specifying·functions·or·warning·options.·For·example,·to·turn·off·all·warnings |
| 287 | for·the·function·<code·class="inline">f/0</code>,·include·the·following·line:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">dialyzer</span><span·class="p"·data-group-id=" | 287 | for·the·function·<code·class="inline">f/0</code>,·include·the·following·line:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">dialyzer</span><span·class="p"·data-group-id="2546844569-1">(</span><span·class="p"·data-group-id="2546844569-2">{</span><span·class="ss">nowarn_function</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">f</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·74,·SHA:·9c693c178191f7cb7b9f9801b4e5ba17cf710cd08e52d1b72421b9cf58fd0576·...·]-1">)</span><span·class="p">.</span></code></pre><p>To·turn·off·warnings·for·improper·lists,·add·the·following·line·to·the·source |
| 288 | file:</p><pre><code·class="text">-dialyzer(no_improper_lists).</code></pre><p>Attribute·<code·class="inline">-dialyzer()</code>·is·allowed·after·function·declarations.·Lists·of·warning | 288 | file:</p><pre><code·class="text">-dialyzer(no_improper_lists).</code></pre><p>Attribute·<code·class="inline">-dialyzer()</code>·is·allowed·after·function·declarations.·Lists·of·warning |
| 289 | options·or·functions·are·allowed:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">dialyzer</span><span·class="p"·data-group-id=" | 289 | options·or·functions·are·allowed:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">dialyzer</span><span·class="p"·data-group-id="6353053804-1">(</span><span·class="p"·data-group-id="6353053804-2">[</span><span·class="p"·data-group-id="6353053804-3">{</span><span·class="ss">nowarn_function</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6353053804[·...·truncated·by·diffoscope;·len:·1866,·SHA:·2b18057b6f51dd417865a872102bdc8bf38ebb367db2a2aa75d0113c7a5581ca·...·]6-1">)</span><span·class="p">.</span></code></pre><p>The·warning·option·for·underspecified·functions,·<code·class="inline">-Wunderspecs</code>,·can·result·in |
| 290 | useful·warnings,·but·often·functions·with·specifications·that·are·strictly·more | 290 | useful·warnings,·but·often·functions·with·specifications·that·are·strictly·more |
| 291 | allowing·than·the·success·typing·cannot·easily·be·modified·to·be·less·allowing. | 291 | allowing·than·the·success·typing·cannot·easily·be·modified·to·be·less·allowing. |
| 292 | To·turn·off·the·warning·for·underspecified·function·<code·class="inline">f/0</code>,·include·the·following | 292 | To·turn·off·the·warning·for·underspecified·function·<code·class="inline">f/0</code>,·include·the·following |
| 293 | line:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">dialyzer</span><span·class="p"·data-group-id=" | 293 | line:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">dialyzer</span><span·class="p"·data-group-id="5793141305-1">(</span><span·class="p"·data-group-id="5793141305-2">{</span><span·class="ss">no_underspecs</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">f</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data-g[·...·truncated·by·diffoscope;·len:·71,·SHA:·2ae15cd688179b686e366ce1cc95aa3ee7f9f33ec930e472ffa965ab050a07df·...·]5-1">)</span><span·class="p">.</span></code></pre><p>For·help·on·the·warning·options,·use·<code·class="inline">dialyzer·-Whelp</code>.·The·options·are·also |
| 294 | enumerated,·see·type·<a·href="#t:warn_option/0"><code·class="inline">warn_option/0</code></a>.</p><p>Attribute·<code·class="inline">-dialyzer()</code>·can·also·be·used·for·turning·on·warnings.·For·example, | 294 | enumerated,·see·type·<a·href="#t:warn_option/0"><code·class="inline">warn_option/0</code></a>.</p><p>Attribute·<code·class="inline">-dialyzer()</code>·can·also·be·used·for·turning·on·warnings.·For·example, |
| 295 | if·a·module·has·been·fixed·regarding·unmatched·returns,·adding·the·following | 295 | if·a·module·has·been·fixed·regarding·unmatched·returns,·adding·the·following |
| 296 | line·can·help·in·assuring·that·no·new·unmatched·return·warnings·are·introduced:</p><pre><code·class="text">-dialyzer(unmatched_returns).</code></pre> | 296 | line·can·help·in·assuring·that·no·new·unmatched·return·warnings·are·introduced:</p><pre><code·class="text">-dialyzer(unmatched_returns).</code></pre> |
| 297 | ····</section> | 297 | ····</section> |
| 298 | </div> | 298 | </div> |
| Offset 205, 37 lines modified | Offset 205, 37 lines modified | ||
| 205 | spec·is·invalid·with·respect·to·the·implementation.·However,·if·they·do·overlap, | 205 | spec·is·invalid·with·respect·to·the·implementation.·However,·if·they·do·overlap, |
| 206 | Dialyzer·will·proceed·under·the·assumption·that·the·correct·type·for·the·given | 206 | Dialyzer·will·proceed·under·the·assumption·that·the·correct·type·for·the·given |
| 207 | function·is·the·intersection·of·the·inferred·type·and·the·specified·type·(the | 207 | function·is·the·intersection·of·the·inferred·type·and·the·specified·type·(the |
| 208 | rationale·being·that·the·user·may·know·something·that·Dialyzer·itself·cannot | 208 | rationale·being·that·the·user·may·know·something·that·Dialyzer·itself·cannot |
| 209 | deduce).·One·implication·of·this·is·that·if·the·user·gives·a·spec·for·a·function | 209 | deduce).·One·implication·of·this·is·that·if·the·user·gives·a·spec·for·a·function |
| 210 | which·overlaps·with·Dialyzer's·inferred·type,·but·is·more·restrictive,·Dialyzer | 210 | which·overlaps·with·Dialyzer's·inferred·type,·but·is·more·restrictive,·Dialyzer |
| 211 | will·trust·those·restrictions.·This·may·then·generate·an·error·elsewhere·that | 211 | will·trust·those·restrictions.·This·may·then·generate·an·error·elsewhere·that |
| 212 | follows·from·the·erroneously·restricted·spec.</p><p><em>Examples:</em></p><p>Non-overlapping·argument:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">foo</span><span·class="p"·data-group-id=" | 212 | follows·from·the·erroneously·restricted·spec.</p><p><em>Examples:</em></p><p>Non-overlapping·argument:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">foo</span><span·class="p"·data-group-id="2497931812-1">(</span><span·class="nf">boolean</span><span·class="p"·data-group-id="2497931812-2">(</span><span·class="p"·data-group-id="2497931812-2">)</span><span·class="p"·data-group-id="2497931812-1">)</span><span·class="w">·</span><span·class="p">->[·...·truncated·by·diffoscope;·len:·156,·SHA:·d1f05afc6bee4fd2541ea54c848be1035fbe6444bd843a98fe041ee691ca44ac·...·]-3">)</span><span·class="p">.</span><span·class="w"> |
| 213 | </span><span·class="c1">%%·Dialyzer·will·infer:·foo(integer())·->·string().</span><span·class="w"> | 213 | </span><span·class="c1">%%·Dialyzer·will·infer:·foo(integer())·->·string().</span><span·class="w"> |
| 214 | </span><span·class="nf">foo</span><span·class="p"·data-group-id=" | 214 | </span><span·class="nf">foo</span><span·class="p"·data-group-id="2497931812-4">(</span><span·class="n">N</span><span·class="p"·data-group-id="2497931812-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 215 | ····</span><span·class="nf">integer_to_list</span><span·class="p"·data-group-id=" | 215 | ····</span><span·class="nf">integer_to_list</span><span·class="p"·data-group-id="2497931812-5">(</span><span·class="n">N</span><span·class="p"·data-group-id="2497931812-5">)</span><span·class="p">.</span></code></pre><p>Since·the·type·of·the·argument·in·the·spec·is·different·from·the·type·that |
| 216 | Dialyzer·inferred,·Dialyzer·will·generate·the·following·warning:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">some_module</span><span·class="p">.</span><span·class="nc">erl</span><span·class="p">:</span><span·class="mi">7</span><span·class="p">:</span><span·class="mi">2</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Invalid</span><span·class="w">·</span><span·class="ss">type</span><span·class="w">·</span><span·class="ss">specification</span><span·class="w">·</span><span·class="ss">for</span><span·class="w">·</span><span·class="ss">function</span><span·class="w">·</span><span·class="nc">some_module</span><span·class="p">:</span><span·class="ss">foo</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">.</span><span·class="w"> | 216 | Dialyzer·inferred,·Dialyzer·will·generate·the·following·warning:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">some_module</span><span·class="p">.</span><span·class="nc">erl</span><span·class="p">:</span><span·class="mi">7</span><span·class="p">:</span><span·class="mi">2</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Invalid</span><span·class="w">·</span><span·class="ss">type</span><span·class="w">·</span><span·class="ss">specification</span><span·class="w">·</span><span·class="ss">for</span><span·class="w">·</span><span·class="ss">function</span><span·class="w">·</span><span·class="nc">some_module</span><span·class="p">:</span><span·class="ss">foo</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">.</span><span·class="w"> |
| 217 | ·</span><span·class="n">The</span><span·class="w">·</span><span·class="ss">success</span><span·class="w">·</span><span·class="ss">typing</span><span·class="w">·</span><span·class="ss">is</span><span·class="w">·</span><span·class="nc">some_module</span><span·class="p">:</span><span·class="nf">foo</span><span·class="w"> | 217 | ·</span><span·class="n">The</span><span·class="w">·</span><span·class="ss">success</span><span·class="w">·</span><span·class="ss">typing</span><span·class="w">·</span><span·class="ss">is</span><span·class="w">·</span><span·class="nc">some_module</span><span·class="p">:</span><span·class="nf">foo</span><span·class="w"> |
| 218 | ··········</span><span·class="p"·data-group-id=" | 218 | ··········</span><span·class="p"·data-group-id="0435433720-1">(</span><span·class="nf">integer</span><span·class="p"·data-group-id="0435433720-2">(</span><span·class="p"·data-group-id="0435433720-2">)</span><span·class="p"·data-group-id="0435433720-1">)</span><span·class="w">·</span><span·class="p">->[·...·truncated·by·diffoscope;·len:·156,·SHA:·5618eabab44df649498ae8ae34d367313de662fe869004a9969d6295f68f4b66·...·]-3">)</span><span·class="w"> |
| 219 | ·</span><span·class="n">But</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="ss">spec</span><span·class="w">·</span><span·class="ss">is</span><span·class="w">·</span><span·class="nc">some_module</span><span·class="p">:</span><span·class="nf">foo</span><span·class="w"> | 219 | ·</span><span·class="n">But</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="ss">spec</span><span·class="w">·</span><span·class="ss">is</span><span·class="w">·</span><span·class="nc">some_module</span><span·class="p">:</span><span·class="nf">foo</span><span·class="w"> |
| 220 | ··········</span><span·class="p"·data-group-id=" | 220 | ··········</span><span·class="p"·data-group-id="0435433720-4">(</span><span·class="nf">boolean</span><span·class="p"·data-group-id="0435433720-5">(</span><span·class="p"·data-group-id="0435433720-5">)</span><span·class="p"·data-group-id="0435433720-4">)</span><span·class="w">·</span><span·class="p">->[·...·truncated·by·diffoscope;·len:·156,·SHA:·b3502cde960c691357e1585ad4a022ec1228ace821cf785ee40b37734efefcd5·...·]-6">)</span><span·class="w"> |
| 221 | ·</span><span·class="n">They</span><span·class="w">·</span><span·class="ss">do</span><span·class="w">·</span><span·class="ow">not</span><span·class="w">·</span><span·class="ss">overlap</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="mi">1</span><span·class="ss">st</span><span·class="w">·</span><span·class="ss">argument</span></code></pre><p>Non-overlapping·return:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">bar</span><span·class="p"·data-group-id=" | 221 | ·</span><span·class="n">They</span><span·class="w">·</span><span·class="ss">do</span><span·class="w">·</span><span·class="ow">not</span><span·class="w">·</span><span·class="ss">overlap</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="mi">1</span><span·class="ss">st</span><span·class="w">·</span><span·class="ss">argument</span></code></pre><p>Non-overlapping·return:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">bar</span><span·class="p"·data-group-id="7379133773-1">(</span><span·class="ss">a</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">b</span><span·class="p"·data-group-id="7379133773-1">)</span><span·class="w">·</span><span·class="p">-></span><span·c[·...·truncated·by·diffoscope;·len:·139,·SHA:·ba6493a8eac48774df252d4192acc5166e12ef02a4be00f6de716ac5c9ae396d·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 222 | </span><span·class="c1">%%·Dialyzer·will·infer:·bar(a·|·b)·->·binary().</span><span·class="w"> | 222 | </span><span·class="c1">%%·Dialyzer·will·infer:·bar(a·|·b)·->·binary().</span><span·class="w"> |
| 223 | </span><span·class="nf">bar</span><span·class="p"·data-group-id="6616539627-3">(</span><span·class="ss">a</span><span·class="p"·data-group-id="6616539627-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="6616539627-4"><<</span><span·class="s">"a"</span><span·class="p"·data-group-id="6616539627-4">>></span><span·class="p">;</span><span·class="w"> | ||
| 224 | </span><span·class="nf">bar</span><span·class="p"·data-group-id=" | 223 | </span><span·class="nf">bar</span><span·class="p"·data-group-id="7379133773-3">(</span><span·class="ss">a</span><span·class="p"·data-group-id="7379133773-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="7379133773-4"><<</span><span·class="s">&quo[·...·truncated·by·diffoscope;·len:·116,·SHA:·f2026305c1547f73e903bc45e07163598069a9a0d3f2846938b321fb6e599277·...·] |
| 224 | </span><span·class="nf">bar</span><span·class="p"·data-group-id="7379133773-5">(</span><span·class="ss">b</span><span·class="p"·data-group-id="7379133773-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="7379133773-6"><<</span><span·class="s">"b"</span><span·class="p"·data-group-id="7379133773-6">>></span><span·class="p">.</span></code></pre><p>Since·the·return·value·in·the·spec·and·the·return·value·inferred·by·Dialyzer·are | ||
| 225 | different,·Dialyzer·will·generate·the·following·warning:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">some_module</span><span·class="p">.</span><span·class="nc">erl</span><span·class="p">:</span><span·class="mi">11</span><span·class="p">:</span><span·class="mi">2</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Invalid</span><span·class="w">·</span><span·class="ss">type</span><span·class="w">·</span><span·class="ss">specification</span><span·class="w">·</span><span·class="ss">for</span><span·class="w">·</span><span·class="ss">function</span><span·class="w">·</span><span·class="nc">some_module</span><span·class="p">:</span><span·class="ss">bar</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">.</span><span·class="w"> | 225 | different,·Dialyzer·will·generate·the·following·warning:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">some_module</span><span·class="p">.</span><span·class="nc">erl</span><span·class="p">:</span><span·class="mi">11</span><span·class="p">:</span><span·class="mi">2</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Invalid</span><span·class="w">·</span><span·class="ss">type</span><span·class="w">·</span><span·class="ss">specification</span><span·class="w">·</span><span·class="ss">for</span><span·class="w">·</span><span·class="ss">function</span><span·class="w">·</span><span·class="nc">some_module</span><span·class="p">:</span><span·class="ss">bar</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">.</span><span·class="w"> |
| 226 | ·</span><span·class="n">The</span><span·class="w">·</span><span·class="ss">success</span><span·class="w">·</span><span·class="ss">typing</span><span·class="w">·</span><span·class="ss">is</span><span·class="w">·</span><span·class="nc">some_module</span><span·class="p">:</span><span·class="nf">bar</span><span·class="w"> | 226 | ·</span><span·class="n">The</span><span·class="w">·</span><span·class="ss">success</span><span·class="w">·</span><span·class="ss">typing</span><span·class="w">·</span><span·class="ss">is</span><span·class="w">·</span><span·class="nc">some_module</span><span·class="p">:</span><span·class="nf">bar</span><span·class="w"> |
| 227 | ··········</span><span·class="p"·data-group-id="316 | 227 | ··········</span><span·class="p"·data-group-id="3816417230-1">(</span><span·class="ss">'a'</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">'b'</span><span·class="p"·data-group-id="3816417230-1">)</span><span·class="w">·</span><span·class="p">[·...·truncated·by·diffoscope;·len:·210,·SHA:·ccbeb86fe977b8811dc85db8c08b23d2e53ce5c334bb5d83534b7cd5ad735cee·...·]-2">>></span><span·class="w"> |
| 228 | ·</span><span·class="n">But</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="ss">spec</span><span·class="w">·</span><span·class="ss">is</span><span·class="w">·</span><span·class="nc">some_module</span><span·class="p">:</span><span·class="nf">bar</span><span·class="w"> | 228 | ·</span><span·class="n">But</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="ss">spec</span><span·class="w">·</span><span·class="ss">is</span><span·class="w">·</span><span·class="nc">some_module</span><span·class="p">:</span><span·class="nf">bar</span><span·class="w"> |
| 229 | ··········</span><span·class="p"·data-group-id="316 | 229 | ··········</span><span·class="p"·data-group-id="3816417230-3">(</span><span·class="ss">'a'</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">'b'</span><span·class="p"·data-group-id="3816417230-3">)</span><span·class="w">·</span><span·class="p">[·...·truncated·by·diffoscope;·len:·158,·SHA:·774c327587b88d85c811675ae91686dc8992272ac62d2beba264a4b380778299·...·]-4">)</span><span·class="w"> |
| 230 | ·</span><span·class="n">The</span><span·class="w">·</span><span·class="ss">return</span><span·class="w">·</span><span·class="ss">types</span><span·class="w">·</span><span·class="ss">do</span><span·class="w">·</span><span·class="ow">not</span><span·class="w">·</span><span·class="ss">overlap</span></code></pre><p>Overlapping·spec·and·inferred·type:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">baz</span><span·class="p"·data-group-id=" | 230 | ·</span><span·class="n">The</span><span·class="w">·</span><span·class="ss">return</span><span·class="w">·</span><span·class="ss">types</span><span·class="w">·</span><span·class="ss">do</span><span·class="w">·</span><span·class="ow">not</span><span·class="w">·</span><span·class="ss">overlap</span></code></pre><p>Overlapping·spec·and·inferred·type:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">baz</span><span·class="p"·data-group-id="1909732167-1">(</span><span·class="ss">a</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">b</span><span·class="p"·data-group-id="1909732167-1">)</span><span·class="w">·</span><span·class="p">-></span><span·c[·...·truncated·by·diffoscope;·len:·150,·SHA:·d22c8603cfbd0c2a5fd0ebcd726f23f597bf393d546e23e5707046572bf65762·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 231 | </span><span·class="c1">%%·Dialyzer·will·infer:·baz(b·|·c·|·d)·->·-1·|·0·|·1.</span><span·class="w"> | 231 | </span><span·class="c1">%%·Dialyzer·will·infer:·baz(b·|·c·|·d)·->·-1·|·0·|·1.</span><span·class="w"> |
| 232 | </span><span·class="nf">baz</span><span·class="p"·data-group-id=" | 232 | </span><span·class="nf">baz</span><span·class="p"·data-group-id="1909732167-3">(</span><span·class="ss">b</span><span·class="p"·data-group-id="1909732167-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="o">-</span><span·class="mi">1</span><span·class="p">;</span><span·class="w"> |
| 233 | </span><span·class="nf">baz</span><span·class="p"·data-group-id=" | 233 | </span><span·class="nf">baz</span><span·class="p"·data-group-id="1909732167-4">(</span><span·class="ss">c</span><span·class="p"·data-group-id="1909732167-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="mi">0</span><span·class="p">;</span><span·class="w"> |
| 234 | </span><span·class="nf">baz</span><span·class="p"·data-group-id=" | 234 | </span><span·class="nf">baz</span><span·class="p"·data-group-id="1909732167-5">(</span><span·class="ss">d</span><span·class="p"·data-group-id="1909732167-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="mi">1</span><span·class="p">.</span></code></pre><p>Dialyzer·will·"trust"·the·spec·and·using·the·intersection·of·the·spec·and |
| 235 | inferred·type:</p><pre><code·class="text">baz(b)·->·0·|·1.</code></pre><p>Notice·how·the·<code·class="inline">c</code>·and·<code·class="inline">d</code>·from·the·argument·to·<code·class="inline">baz/1</code>·and·the·<code·class="inline">-1</code>·in·the | 235 | inferred·type:</p><pre><code·class="text">baz(b)·->·0·|·1.</code></pre><p>Notice·how·the·<code·class="inline">c</code>·and·<code·class="inline">d</code>·from·the·argument·to·<code·class="inline">baz/1</code>·and·the·<code·class="inline">-1</code>·in·the |
| 236 | return·from·the·inferred·type·were·dropped·once·the·spec·and·inferred·type·were | 236 | return·from·the·inferred·type·were·dropped·once·the·spec·and·inferred·type·were |
| 237 | intersected.·This·could·result·in·warnings·being·emitted·for·later·functions.</p><p>For·example,·if·<code·class="inline">baz/1</code>·is·called·like·this:</p><pre><code·class="text">call_baz1(A)·-> | 237 | intersected.·This·could·result·in·warnings·being·emitted·for·later·functions.</p><p>For·example,·if·<code·class="inline">baz/1</code>·is·called·like·this:</p><pre><code·class="text">call_baz1(A)·-> |
| 238 | ····case·baz(A)·of | 238 | ····case·baz(A)·of |
| 239 | ········-1·->·negative; | 239 | ········-1·->·negative; |
| 240 | ········0·->·zero; | 240 | ········0·->·zero; |
| 241 | ········1·->·positive | 241 | ········1·->·positive |
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| 118 | <div·id="search"> | 118 | <div·id="search"> |
| 119 | ··<h1> | 119 | ··<h1> |
| 120 | ····<span></span> | 120 | ····<span></span> |
| 121 | ··</h1> | 121 | ··</h1> |
| 122 | ··<div·class="loading"><div></div><div></div><div></div><div></div></div> | 122 | ··<div·class="loading"><div></div><div></div><div></div><div></div></div> |
| 123 | </div> | 123 | </div> |
| 124 | <script·src="dist/search_data- | 124 | <script·src="dist/search_data-6D666814.js"></script> |
| 125 | ····<footer·class="footer"> | 125 | ····<footer·class="footer"> |
| 126 | ······<p> | 126 | ······<p> |
| 127 | ········<span·class="line"> | 127 | ········<span·class="line"> |
| 128 | ··········<button·class="a-main·footer-button·display-quick-switch"·title="Search·HexDocs·packages"> | 128 | ··········<button·class="a-main·footer-button·display-quick-switch"·title="Search·HexDocs·packages"> |
| 129 | ············Search·HexDocs | 129 | ············Search·HexDocs |
| 130 | ··········</button> | 130 | ··········</button> |
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| 1 | Zip·file·size:·1437 | 1 | Zip·file·size:·143782·bytes,·number·of·entries:·24 |
| 2 | ?rw-r--r--··6.1·unx·······20·bx·stor·25-Mar-18·0 | 2 | ?rw-r--r--··6.1·unx·······20·bx·stor·25-Mar-18·08:51·mimetype |
| 3 | ?rw-r--r--··6.1·unx······720·bx·defN·25-Mar-18·0 | 3 | ?rw-r--r--··6.1·unx······720·bx·defN·25-Mar-18·08:51·OEBPS/title.xhtml |
| 4 | ?rw-r--r--··6.1·unx····93844·bx·defN·25-Mar-18·0 | 4 | ?rw-r--r--··6.1·unx····93844·bx·defN·25-Mar-18·08:51·OEBPS/notes.xhtml |
| 5 | ?rw-r--r--··6.1·unx·····2002·bx·defN·25-Mar-18·0 | 5 | ?rw-r--r--··6.1·unx·····2002·bx·defN·25-Mar-18·08:51·OEBPS/nav.xhtml |
| 6 | ?rw-r--r--··6.1·unx····14562·bx·defN·25-Mar-18·0 | 6 | ?rw-r--r--··6.1·unx····14562·bx·defN·25-Mar-18·08:51·OEBPS/dist/epub-erlang-ESPT6BQV.css |
| 7 | ?rw-r--r--··6.1·unx······499·bx·defN·25-Mar-18·0 | 7 | ?rw-r--r--··6.1·unx······499·bx·defN·25-Mar-18·08:51·OEBPS/dist/epub-LSJCIYTM.js |
| 8 | ?rw-r--r--··6.1·unx·····3956·bx·defN·25-Mar-18·0 | 8 | ?rw-r--r--··6.1·unx·····3956·bx·defN·25-Mar-18·08:51·OEBPS/diameterc_cmd.xhtml |
| 9 | ?rw-r--r--··6.1·unx······620·bx·defN·25-Mar-18·0 | 9 | ?rw-r--r--··6.1·unx······620·bx·defN·25-Mar-18·08:51·OEBPS/diameter_using.xhtml |
| 10 | ?rw-r--r--··6.1·unx····13050·bx·defN·25-Mar-18·0 | 10 | ?rw-r--r--··6.1·unx····13050·bx·defN·25-Mar-18·08:51·OEBPS/diameter_transport.xhtml |
| 11 | ?rw-r--r--··6.1·unx····17167·bx·defN·25-Mar-18·0 | 11 | ?rw-r--r--··6.1·unx····17167·bx·defN·25-Mar-18·08:51·OEBPS/diameter_tcp.xhtml |
| 12 | ?rw-r--r--··6.1·unx····43142·bx·defN·25-Mar-18·0 | 12 | ?rw-r--r--··6.1·unx····43142·bx·defN·25-Mar-18·08:51·OEBPS/diameter_soc.xhtml |
| 13 | ?rw-r--r--··6.1·unx·····2082·bx·defN·25-Mar-18·0 | 13 | ?rw-r--r--··6.1·unx·····2082·bx·defN·25-Mar-18·08:51·OEBPS/diameter_service.xhtml |
| 14 | ?rw-r--r--··6.1·unx····14287·bx·defN·25-Mar-18·0 | 14 | ?rw-r--r--··6.1·unx····14287·bx·defN·25-Mar-18·08:51·OEBPS/diameter_sctp.xhtml |
| 15 | ?rw-r--r--··6.1·unx····16021·bx·defN·25-Mar-18·0 | 15 | ?rw-r--r--··6.1·unx····16021·bx·defN·25-Mar-18·08:51·OEBPS/diameter_make.xhtml |
| 16 | ?rw-r--r--··6.1·unx·····3472·bx·defN·25-Mar-18·0 | 16 | ?rw-r--r--··6.1·unx·····3472·bx·defN·25-Mar-18·08:51·OEBPS/diameter_intro.xhtml |
| 17 | ?rw-r--r--··6.1·unx······718·bx·defN·25-Mar-18·0 | 17 | ?rw-r--r--··6.1·unx······718·bx·defN·25-Mar-18·08:51·OEBPS/diameter_examples.xhtml |
| 18 | ?rw-r--r--··6.1·unx····26449·bx·defN·25-Mar-18·0 | 18 | ?rw-r--r--··6.1·unx····26449·bx·defN·25-Mar-18·08:51·OEBPS/diameter_dict.xhtml |
| 19 | ?rw-r--r--··6.1·unx····23141·bx·defN·25-Mar-18·0 | 19 | ?rw-r--r--··6.1·unx····23141·bx·defN·25-Mar-18·08:51·OEBPS/diameter_codec.xhtml |
| 20 | ?rw-r--r--··6.1·unx····51180·bx·defN·25-Mar-18·0 | 20 | ?rw-r--r--··6.1·unx····51180·bx·defN·25-Mar-18·08:51·OEBPS/diameter_app.xhtml |
| 21 | ?rw-r--r--··6.1·unx···247889·bx·defN·25-Mar-18·0 | 21 | ?rw-r--r--··6.1·unx···247889·bx·defN·25-Mar-18·08:51·OEBPS/diameter.xhtml |
| 22 | ?rw-r--r--··6.1·unx·····3430·bx·defN·25-Mar-18·0 | 22 | ?rw-r--r--··6.1·unx·····3430·bx·defN·25-Mar-18·08:51·OEBPS/content.opf |
| 23 | ?rw-r--r--··6.1·unx·····5837·bx·defN·25-Mar-18·0 | 23 | ?rw-r--r--··6.1·unx·····5837·bx·defN·25-Mar-18·08:51·OEBPS/assets/logo.png |
| 24 | ?rw-r--r--··6.1·unx······252·bx·defN·25-Mar-18·0 | 24 | ?rw-r--r--··6.1·unx······252·bx·defN·25-Mar-18·08:51·META-INF/container.xml |
| 25 | ?rw-r--r--··6.1·unx······162·bx·defN·25-Mar-18·0 | 25 | ?rw-r--r--··6.1·unx······162·bx·defN·25-Mar-18·08:51·META-INF/com.apple.ibooks.display-options.xml |
| 26 | 24·files,·584502·bytes·uncompressed,·1395 | 26 | 24·files,·584502·bytes·uncompressed,·139526·bytes·compressed:··76.1% |
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| 1 | Zip·archive·data,·made·by·v6.1·UNIX,·extract·using·at·least·v1.0,·last·modified,·last·modified·Sun,·Mar·18·2025·0 | 1 | Zip·archive·data,·made·by·v6.1·UNIX,·extract·using·at·least·v1.0,·last·modified,·last·modified·Sun,·Mar·18·2025·08:51:14,·uncompressed·size·20,·method=store |
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| 22 | ····</h1> | 22 | ····</h1> |
| 23 | <p>Compile·a·diameter·dictionary·to·Erlang·source.</p><h2·id="synopsis"·class="section-heading"> | 23 | <p>Compile·a·diameter·dictionary·to·Erlang·source.</p><h2·id="synopsis"·class="section-heading"> |
| 24 | ··<a·href="#synopsis"·class="hover-link"> | 24 | ··<a·href="#synopsis"·class="hover-link"> |
| 25 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 25 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 26 | ··</a> | 26 | ··</a> |
| 27 | ··<span·class="text">Synopsis</span> | 27 | ··<span·class="text">Synopsis</span> |
| 28 | </h2> | 28 | </h2> |
| 29 | <pre><code·class="makeup·erlang"·translate="no"><span·class="ss">diameterc</span><span·class="w">·</span><span·class="p"·data-group-id=" | 29 | <pre><code·class="makeup·erlang"·translate="no"><span·class="ss">diameterc</span><span·class="w">·</span><span·class="p"·data-group-id="4360770628-1">[</span><span·class="o"><</span><span·class="ss">options</span><span·class="o">></span><span·class="p"·data-group-id="4360770628-1">]</span><span·class="w">·</span><span·class="o"><</span><span·class="ss">file</span><span·class="o">></span></code></pre><h2·id="description"·class="section-heading"> |
| 30 | ··<a·href="#description"·class="hover-link"> | 30 | ··<a·href="#description"·class="hover-link"> |
| 31 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 31 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 32 | ··</a> | 32 | ··</a> |
| 33 | ··<span·class="text">Description</span> | 33 | ··<span·class="text">Description</span> |
| 34 | </h2> | 34 | </h2> |
| 35 | <p>The·diameterc·utility·is·used·to·compile·a·diameter | 35 | <p>The·diameterc·utility·is·used·to·compile·a·diameter |
| 36 | <a·href="diameter_dict.xhtml">dictionary·file</a>·into·Erlang·source.·The·resulting·source | 36 | <a·href="diameter_dict.xhtml">dictionary·file</a>·into·Erlang·source.·The·resulting·source |
| Offset 30, 15 lines modified | Offset 30, 15 lines modified | ||
| 30 | encode/decode.</p><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>The·diameter·user·does·not·need·to·call·functions·here·explicitly·when·sending | 30 | encode/decode.</p><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>The·diameter·user·does·not·need·to·call·functions·here·explicitly·when·sending |
| 31 | and·receiving·messages·using·<a·href="diameter.xhtml#call/4"><code·class="inline">diameter:call/4</code></a>·and·the·callback·interface | 31 | and·receiving·messages·using·<a·href="diameter.xhtml#call/4"><code·class="inline">diameter:call/4</code></a>·and·the·callback·interface |
| 32 | documented·in·<a·href="diameter_app.xhtml"><code·class="inline">diameter_app</code></a>:·diameter·itself·provides·encode/decode·as·a | 32 | documented·in·<a·href="diameter_app.xhtml"><code·class="inline">diameter_app</code></a>:·diameter·itself·provides·encode/decode·as·a |
| 33 | consequence·of·configuration·passed·to·<a·href="diameter.xhtml#start_service/2"><code·class="inline">diameter:start_service/2</code></a>,·and·the | 33 | consequence·of·configuration·passed·to·<a·href="diameter.xhtml#start_service/2"><code·class="inline">diameter:start_service/2</code></a>,·and·the |
| 34 | results·may·differ·from·those·returned·by·the·functions·documented·here, | 34 | results·may·differ·from·those·returned·by·the·functions·documented·here, |
| 35 | depending·on·configuration.</p></section><p>The·<a·href="diameter_codec.xhtml#header">header()</a>·and | 35 | depending·on·configuration.</p></section><p>The·<a·href="diameter_codec.xhtml#header">header()</a>·and |
| 36 | <a·href="diameter_codec.xhtml#packet">packet()</a>·records·below·are·defined·in·diameter.hrl, | 36 | <a·href="diameter_codec.xhtml#packet">packet()</a>·records·below·are·defined·in·diameter.hrl, |
| 37 | which·can·be·included·as·follows.</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p">-</samp><samp·class="na">include_lib</samp><samp·class="p"·data-group-id=" | 37 | which·can·be·included·as·follows.</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p">-</samp><samp·class="na">include_lib</samp><samp·class="p"·data-group-id="4255102203-1">(</samp><samp·class="s">"diameter/include/diameter.hrl"</samp><samp·class="p"·data-group-id="4255102203-1">)</samp><samp·class="p">.</samp></code></pre><p>Application-specific·records·are·defined·in·the·hrl·files·resulting·from |
| 38 | dictionary·file·compilation.</p><h2·id="module-data-types"·class="section-heading"> | 38 | dictionary·file·compilation.</p><h2·id="module-data-types"·class="section-heading"> |
| 39 | ··<a·href="#module-data-types"·class="hover-link"> | 39 | ··<a·href="#module-data-types"·class="hover-link"> |
| 40 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 40 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 41 | ··</a> | 41 | ··</a> |
| 42 | ··<span·class="text">DATA·TYPES</span> | 42 | ··<span·class="text">DATA·TYPES</span> |
| 43 | </h2> | 43 | </h2> |
| 44 | <ul><li><p><strong><code·class="inline"·id="integers">uint8() ·=·0..255</code></strong></p></li><li><p><strong><code·class="inline">uint24()·=·0..16777215</code></strong></p></li><li><p><strong><code·class="inline">uint32()·=·0..4294967295</code></strong>·-·8-bit,·24-bit·and·32-bit·integers·occurring | 44 | <ul><li><p><strong><code·class="inline"·id="integers">uint8() ·=·0..255</code></strong></p></li><li><p><strong><code·class="inline">uint24()·=·0..16777215</code></strong></p></li><li><p><strong><code·class="inline">uint32()·=·0..4294967295</code></strong>·-·8-bit,·24-bit·and·32-bit·integers·occurring |
| Offset 576, 20 lines modified | Offset 576, 20 lines modified | ||
| 576 | ······</div> | 576 | ······</div> |
| 577 | <p>Invoked·when·a·request·message·is·received·from·a·peer.·The·application·in·which | 577 | <p>Invoked·when·a·request·message·is·received·from·a·peer.·The·application·in·which |
| 578 | the·callback·takes·place·(that·is,·the·callback·module·as·configured·with | 578 | the·callback·takes·place·(that·is,·the·callback·module·as·configured·with |
| 579 | <a·href="diameter.xhtml#start_service/2"><code·class="inline">diameter:start_service/2</code></a>)·is·determined·by·the·Application·Identifier·in·the | 579 | <a·href="diameter.xhtml#start_service/2"><code·class="inline">diameter:start_service/2</code></a>)·is·determined·by·the·Application·Identifier·in·the |
| 580 | header·of·the·incoming·request·message,·the·selected·module·being·the·one·whose | 580 | header·of·the·incoming·request·message,·the·selected·module·being·the·one·whose |
| 581 | corresponding·dictionary·declares·itself·as·defining·either·the·application·in | 581 | corresponding·dictionary·declares·itself·as·defining·either·the·application·in |
| 582 | question·or·the·Relay·application.</p><p>The·argument·<a·href="#t:packet/0">packet()</a>·has·the·following·signature.</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="o">#</samp><samp·class="ss">diameter_packet</samp><samp·class="p"·data-group-id=" | 582 | question·or·the·Relay·application.</p><p>The·argument·<a·href="#t:packet/0">packet()</a>·has·the·following·signature.</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="o">#</samp><samp·class="ss">diameter_packet</samp><samp·class="p"·data-group-id="6532850977-1">{</samp><samp·class="ss">header</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="o">#</samp><samp·class="ss">diameter_header</samp><samp·class="p"·data-group-id="6532850977-2">{</samp><samp·class="p"·[·...·truncated·by·diffoscope;·len:·25,·SHA:·cda0b7ec8c38e282768d277a69bdf1d2dfff938d94d1ded3c24596f9f8a9fe3b·...·]-2">}</samp><samp·class="p">,</samp><samp·class="w"> |
| 583 | ·················</samp><samp·class="ss">avps</samp><samp·class="w">···</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="p"·data-group-id=" | 583 | ·················</samp><samp·class="ss">avps</samp><samp·class="w">···</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="p"·data-group-id="6532850977-3">[</samp><samp·class="o">#</samp><samp·class="ss">diameter_avp</samp><samp·class="p"·data-group-id="6532850977-4">{</samp><samp·class="p"·data-group-id="6532850977-4">}</samp><samp·class="p"·data-group-id="6532850977-3">]</samp><samp·class="p">,</samp><samp·class="w"> |
| 584 | ·················</samp><samp·class="ss">msg</samp><samp·class="w">····</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="nf">record</samp><samp·class="p"·data-group-id=" | 584 | ·················</samp><samp·class="ss">msg</samp><samp·class="w">····</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="nf">record</samp><samp·class="p"·data-group-id="6532850977-5">(</samp><samp·class="p"·data-group-id="6532850977-5">)</samp><samp·class="w">·</samp><samp·class="p">|</samp><samp·class="w">·</samp><samp·class="ss">undefined</samp><samp·class="p">,</samp><samp·class="w"> |
| 585 | ·················</samp><samp·class="ss">errors</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="p"·data-group-id=" | 585 | ·················</samp><samp·class="ss">errors</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="p"·data-group-id="6532850977-6">[</samp><samp·class="n">Unsigned32</samp><samp·class="p"·data-group-id="6532850977-7">(</samp><samp·class="p"·data-group-id="6532850977-7">)</samp><samp·class="w">·</samp><samp·class="p">|</samp><samp·class="w">·</samp><samp·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·479,·SHA:·f0d2bfb3c3eda260fdcc6866ec79a006c0c523392c00648c88ae0405a3369eb3·...·]-6">]</samp><samp·class="p">,</samp><samp·class="w"> |
| 586 | ·················</samp><samp·class="ss">bin</samp><samp·class="w">····</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="nf">binary</samp><samp·class="p"·data-group-id=" | 586 | ·················</samp><samp·class="ss">bin</samp><samp·class="w">····</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="nf">binary</samp><samp·class="p"·data-group-id="6532850977-11">(</samp><samp·class="p"·data-group-id="6532850977-11">)</samp><samp·class="p">,</samp><samp·class="w"> |
| 587 | ·················</samp><samp·class="ss">transport_data</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="nf">term</samp><samp·class="p"·data-group-id=" | 587 | ·················</samp><samp·class="ss">transport_data</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="nf">term</samp><samp·class="p"·data-group-id="6532850977-12">(</samp><samp·class="p"·data-group-id="6532850977-12">)</samp><samp·class="p"·data-group-id="6532850977-1">}</samp></code></pre><p>The·<code·class="inline">msg</code>·field·will·be·<code·class="inline">undefined</code>·in·case·the·request·has·been·received·in·the |
| 588 | relay·application.·Otherwise·it·contains·the·record·representing·the·request·as | 588 | relay·application.·Otherwise·it·contains·the·record·representing·the·request·as |
| 589 | outlined·in·<a·href="diameter_dict.xhtml#MESSAGE_RECORDS">diameter_dict(4)</a>.</p><p>The·<code·class="inline">errors</code>·field·specifies·any·results·codes·identifying·errors·found·while | 589 | outlined·in·<a·href="diameter_dict.xhtml#MESSAGE_RECORDS">diameter_dict(4)</a>.</p><p>The·<code·class="inline">errors</code>·field·specifies·any·results·codes·identifying·errors·found·while |
| 590 | decoding·the·request.·This·is·used·to·set·Result-Code·and/or·Failed-AVP·in·a | 590 | decoding·the·request.·This·is·used·to·set·Result-Code·and/or·Failed-AVP·in·a |
| 591 | returned·answer·unless·the·callback·returns·a·<code·class="inline">#diameter_packet{}</code>·whose | 591 | returned·answer·unless·the·callback·returns·a·<code·class="inline">#diameter_packet{}</code>·whose |
| 592 | <code·class="inline">errors</code>·field·is·set·to·either·a·non-empty·list·of·its·own,·in·which·case·this | 592 | <code·class="inline">errors</code>·field·is·set·to·either·a·non-empty·list·of·its·own,·in·which·case·this |
| 593 | list·is·used·instead,·or·the·atom·<code·class="inline">false</code>·to·disable·any·setting·of·Result-Code | 593 | list·is·used·instead,·or·the·atom·<code·class="inline">false</code>·to·disable·any·setting·of·Result-Code |
| 594 | and·Failed-AVP.·Note·that·the·errors·detected·by·diameter·are·of·the·3xxx·and | 594 | and·Failed-AVP.·Note·that·the·errors·detected·by·diameter·are·of·the·3xxx·and |
| Offset 225, 22 lines modified | Offset 225, 22 lines modified | ||
| 225 | not·setting·a·value,·as·documented·in·RFC·6733.·The·function | 225 | not·setting·a·value,·as·documented·in·RFC·6733.·The·function |
| 226 | <a·href="#origin_state_id/0"><code·class="inline">origin_state_id/0</code></a>·can·be·used·as·to·retrieve·a·value·that·is·computed·when | 226 | <a·href="#origin_state_id/0"><code·class="inline">origin_state_id/0</code></a>·can·be·used·as·to·retrieve·a·value·that·is·computed·when |
| 227 | the·diameter·application·is·started.</p></li><li><p><strong><code·class="inline">{'Supported-Vendor-Id',·[</code><a·href="diameter_dict.html#DATA_TYPES"><code·class="inline">Unsigned32()</code></a><code·class="inline">]}</code></strong></p></li><li><p><strong><code·class="inline">{'Auth-Application-Id',·[</code><a·href="diameter_dict.html#DATA_TYPES"><code·class="inline">Unsigned32()</code></a><code·class="inline">]}</code></strong></p></li><li><p><strong><code·class="inline">{'Inband-Security-Id',·[</code><a·href="diameter_dict.html#DATA_TYPES"><code·class="inline">Unsigned32()</code></a><code·class="inline">]}</code></strong>·- | 227 | the·diameter·application·is·started.</p></li><li><p><strong><code·class="inline">{'Supported-Vendor-Id',·[</code><a·href="diameter_dict.html#DATA_TYPES"><code·class="inline">Unsigned32()</code></a><code·class="inline">]}</code></strong></p></li><li><p><strong><code·class="inline">{'Auth-Application-Id',·[</code><a·href="diameter_dict.html#DATA_TYPES"><code·class="inline">Unsigned32()</code></a><code·class="inline">]}</code></strong></p></li><li><p><strong><code·class="inline">{'Inband-Security-Id',·[</code><a·href="diameter_dict.html#DATA_TYPES"><code·class="inline">Unsigned32()</code></a><code·class="inline">]}</code></strong>·- |
| 228 | Inband-Security-Id·defaults·to·the·empty·list,·which·is·equivalent·to·a·list | 228 | Inband-Security-Id·defaults·to·the·empty·list,·which·is·equivalent·to·a·list |
| 229 | containing·only·0·(NO_INBAND_SECURITY).·If·1·(TLS)·is·specified·then·TLS·is | 229 | containing·only·0·(NO_INBAND_SECURITY).·If·1·(TLS)·is·specified·then·TLS·is |
| 230 | selected·if·the·CER/CEA·received·from·the·peer·offers·it.</p></li><li><p><strong><code·class="inline">{'Acct-Application-Id',·[</code><a·href="diameter_dict.html#DATA_TYPES"><code·class="inline">Unsigned32()</code></a><code·class="inline">]}</code></strong></p></li><li><p><strong><code·class="inline">{'Vendor-Specific-Application-Id',·[</code><a·href="diameter_dict.html#DATA_TYPES"><code·class="inline">Grouped()</code></a><code·class="inline">]}</code></strong></p></li><li><p><strong><code·class="inline">{'Firmware-Revision',</code><a·href="diameter_dict.html#DATA_TYPES"><code·class="inline">Unsigned32()</code></a><code·class="inline">}</code></strong></p></li></ul><p>Note·that·each·tuple·communicates·one·or·more·AVP·values.·It·is·an·error·to | 230 | selected·if·the·CER/CEA·received·from·the·peer·offers·it.</p></li><li><p><strong><code·class="inline">{'Acct-Application-Id',·[</code><a·href="diameter_dict.html#DATA_TYPES"><code·class="inline">Unsigned32()</code></a><code·class="inline">]}</code></strong></p></li><li><p><strong><code·class="inline">{'Vendor-Specific-Application-Id',·[</code><a·href="diameter_dict.html#DATA_TYPES"><code·class="inline">Grouped()</code></a><code·class="inline">]}</code></strong></p></li><li><p><strong><code·class="inline">{'Firmware-Revision',</code><a·href="diameter_dict.html#DATA_TYPES"><code·class="inline">Unsigned32()</code></a><code·class="inline">}</code></strong></p></li></ul><p>Note·that·each·tuple·communicates·one·or·more·AVP·values.·It·is·an·error·to |
| 231 | specify·duplicate·tuples.</p><p><a·href=""·id="eval"></a></p></li><li><p><strong><code·class="inline">eval()·=·{M,F,A}·|·fun()·|·[eval()·|·A]</code></strong>·-·An·expression·that·can·be | 231 | specify·duplicate·tuples.</p><p><a·href=""·id="eval"></a></p></li><li><p><strong><code·class="inline">eval()·=·{M,F,A}·|·fun()·|·[eval()·|·A]</code></strong>·-·An·expression·that·can·be |
| 232 | evaluated·as·a·function·in·the·following·sense.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">eval</span><span·class="p"·data-group-id=" | 232 | evaluated·as·a·function·in·the·following·sense.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">eval</span><span·class="p"·data-group-id="9228198283-1">(</span><span·class="p"·data-group-id="9228198283-2">[</span><span·class="p"·data-group-id="9228198283-3">{</span><span·class="n">M</span><span·class="p">,</span><span·class="n">F</span><span·class="p">,</span><span·class="n">A</span><span·cl[·...·truncated·by·diffoscope;·len:·235,·SHA:·ee40595f4c692278c8cb191492a67a9887d49675919bbee4097c8269f5655e4b·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 233 | ····</span><span·class="nf">apply</span><span·class="p"·data-group-id=" | 233 | ····</span><span·class="nf">apply</span><span·class="p"·data-group-id="9228198283-4">(</span><span·class="n">M</span><span·class="p">,</span><span·class="w">·</span><span·class="n">F</span><span·class="p">,</span><span·class="w">·</span><span·class="n">T</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·[·...·truncated·by·diffoscope;·len:·72,·SHA:·c4bd92cf8b058cd0914a5e4d8a81901efbe3ca43ca873718923a8b1d9df2aeb7·...·]-4">)</span><span·class="p">;</span><span·class="w"> |
| 234 | </span><span·class="nf">eval</span><span·class="p"·data-group-id=" | 234 | </span><span·class="nf">eval</span><span·class="p"·data-group-id="9228198283-5">(</span><span·class="p"·data-group-id="9228198283-6">[</span><span·class="p"·data-group-id="9228198283-7">[</span><span·class="n">F</span><span·class="p">|</span><span·class="n">A</span><span·class="p"·data-group-id="9228198283-7">]</span><sp[·...·truncated·by·diffoscope;·len:·187,·SHA:·911ae50726db018c1090f5c966395dcdc6f547998b53d2f1f44e25123f5919b8·...·]-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 235 | ····</span><span·class="nf">eval</span><span·class="p"·data-group-id=" | 235 | ····</span><span·class="nf">eval</span><span·class="p"·data-group-id="9228198283-8">(</span><span·class="p"·data-group-id="9228198283-9">[</span><span·class="n">F</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="n">T</span><span·class="w">·</span><span·class="o">++</span><span·class=[·...·truncated·by·diffoscope;·len:·130,·SHA:·f2ef348f36eae62202c3e7dbb3df126524e3ee7f35125b0292d6ae2c62802d63·...·]-8">)</span><span·class="p">;</span><span·class="w"> |
| 236 | </span><span·class="nf">eval</span><span·class="p"·data-group-id=" | 236 | </span><span·class="nf">eval</span><span·class="p"·data-group-id="9228198283-10">(</span><span·class="p"·data-group-id="9228198283-11">[</span><span·class="n">F</span><span·class="p">|</span><span·class="n">A</span><span·class="p"·data-group-id="9228198283-11">]</span><span·class="p"·data-group-id="9228198283-10">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 237 | ····</span><span·class="nf">apply</span><span·class="p"·data-group-id=" | 237 | ····</span><span·class="nf">apply</span><span·class="p"·data-group-id="9228198283-12">(</span><span·class="n">F</span><span·class="p">,</span><span·class="w">·</span><span·class="n">A</span><span·class="p"·data-group-id="9228198283-12">)</span><span·class="p">;</span><span·class="w"> |
| 238 | </span><span·class="nf">eval</span><span·class="p"·data-group-id=" | 238 | </span><span·class="nf">eval</span><span·class="p"·data-group-id="9228198283-13">(</span><span·class="n">F</span><span·class="p"·data-group-id="9228198283-13">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 239 | ····</span><span·class="nf">eval</span><span·class="p"·data-group-id=" | 239 | ····</span><span·class="nf">eval</span><span·class="p"·data-group-id="9228198283-14">(</span><span·class="p"·data-group-id="9228198283-15">[</span><span·class="n">F</span><span·class="p"·data-group-id="9228198283-15">]</span><span·class="p"·data-group-id="9228198283-14">)</span><span·class="p">.</span></code></pre><p>Applying·an·<a·href="diameter.html#eval"><code·class="inline">eval()</code></a>·<code·class="inline">E</code>·to·an·argument·list·<code·class="inline">A</code>·is·meant |
| 240 | in·the·sense·of·<code·class="inline">eval([E|A])</code>.</p><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>Beware·of·using·fun·expressions·of·the·form·<code·class="inline">fun·Name/Arity</code>·in·situations | 240 | in·the·sense·of·<code·class="inline">eval([E|A])</code>.</p><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>Beware·of·using·fun·expressions·of·the·form·<code·class="inline">fun·Name/Arity</code>·in·situations |
| 241 | in·which·the·fun·is·not·short-lived·and·code·is·to·be·upgraded·at·runtime | 241 | in·which·the·fun·is·not·short-lived·and·code·is·to·be·upgraded·at·runtime |
| 242 | since·any·processes·retaining·such·a·fun·will·have·a·reference·to·old·code. | 242 | since·any·processes·retaining·such·a·fun·will·have·a·reference·to·old·code. |
| 243 | In·particular,·such·a·value·is·typically·inappropriate·in·configuration | 243 | In·particular,·such·a·value·is·typically·inappropriate·in·configuration |
| 244 | passed·to·<a·href="#start_service/2"><code·class="inline">start_service/2</code></a>·or·<a·href="#add_transport/2"><code·class="inline">add_transport/2</code></a>.</p></section><p><a·href=""·id="peer_filter"></a></p></li><li><p><strong><code·class="inline">peer_filter()·=·term()</code></strong>·-·Filter·passed·to·<a·href="#call/4"><code·class="inline">call/4</code></a>·in·order·to·select | 244 | passed·to·<a·href="#start_service/2"><code·class="inline">start_service/2</code></a>·or·<a·href="#add_transport/2"><code·class="inline">add_transport/2</code></a>.</p></section><p><a·href=""·id="peer_filter"></a></p></li><li><p><strong><code·class="inline">peer_filter()·=·term()</code></strong>·-·Filter·passed·to·<a·href="#call/4"><code·class="inline">call/4</code></a>·in·order·to·select |
| 245 | candidate·peers·for·a·<a·href="diameter_app.html#c:pick_peer/4">pick_peer/4</a>·callback. | 245 | candidate·peers·for·a·<a·href="diameter_app.html#c:pick_peer/4">pick_peer/4</a>·callback. |
| 246 | Has·one·of·the·following·types.</p><ul><li><p><strong><code·class="inline">none</code></strong>·-·Matches·any·peer.·This·is·a·convenience·that·provides·a·filter | 246 | Has·one·of·the·following·types.</p><ul><li><p><strong><code·class="inline">none</code></strong>·-·Matches·any·peer.·This·is·a·convenience·that·provides·a·filter |
| Offset 304, 18 lines modified | Offset 304, 18 lines modified | ||
| 304 | peer·respectively.·<code·class="inline">Pkt</code>·contains·the·CER·in·question.·In·the·case·of | 304 | peer·respectively.·<code·class="inline">Pkt</code>·contains·the·CER·in·question.·In·the·case·of |
| 305 | rejection·by·a·capabilities·callback,·the·tuple·contains·the·rejecting | 305 | rejection·by·a·capabilities·callback,·the·tuple·contains·the·rejecting |
| 306 | callback.</p></li><li><p><strong><code·class="inline">{'CER',·Caps,·{ResultCode,·Pkt}}</code></strong></p><pre><code·class="text">ResultCode·=·integer() | 306 | callback.</p></li><li><p><strong><code·class="inline">{'CER',·Caps,·{ResultCode,·Pkt}}</code></strong></p><pre><code·class="text">ResultCode·=·integer() |
| 307 | Caps·=·#diameter_caps{} | 307 | Caps·=·#diameter_caps{} |
| 308 | Pkt··=·#diameter_packet{}</code></pre><p>An·incoming·CER·contained·errors·and·has·been·answered·with·the·indicated | 308 | Pkt··=·#diameter_packet{}</code></pre><p>An·incoming·CER·contained·errors·and·has·been·answered·with·the·indicated |
| 309 | result·code.·<code·class="inline">Caps</code>·contains·values·for·the·local·node·only.·<code·class="inline">Pkt</code> | 309 | result·code.·<code·class="inline">Caps</code>·contains·values·for·the·local·node·only.·<code·class="inline">Pkt</code> |
| 310 | contains·the·CER·in·question.</p></li><li><p><strong><code·class="inline">{'CER',·timeout}</code></strong>·-·An·expected·CER·was·not·received·within | 310 | contains·the·CER·in·question.</p></li><li><p><strong><code·class="inline">{'CER',·timeout}</code></strong>·-·An·expected·CER·was·not·received·within |
| 311 | <a·href="diameter.html#capx_timeout">capx_timeout</a>·of·connection·establishment.</p></li><li><p><strong><code·class="inline">{'CEA',·Result,·Caps,·Pkt}</code></strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Result</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">ResultCode</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id=" | 311 | <a·href="diameter.html#capx_timeout">capx_timeout</a>·of·connection·establishment.</p></li><li><p><strong><code·class="inline">{'CEA',·Result,·Caps,·Pkt}</code></strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Result</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">ResultCode</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="9717515277-1">(</span><span·class="p"·data-group-id="9717515277-1">)</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="9717515277-2">{</span><span·class="ss">capabilities_cb</span><span·class="p">,[·...·truncated·by·diffoscope;·len:·233,·SHA:·d55d91980f13f0ad1fb23553e84c3121246282cdd52ce46b7fb4f6cd9666d3ae·...·]-2">}</span><span·class="w"> |
| 312 | </span><span·class="n">Caps</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">diameter_caps</span><span·class="p"·data-group-id=" | 312 | </span><span·class="n">Caps</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">diameter_caps</span><span·class="p"·data-group-id="9717515277-3">{</span><span·class="p"·data-group-id="9717515277-3">}</span><span·class="w"> |
| 313 | </span><span·class="n">Pkt</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">diameter_packet</span><span·class="p"·data-group-id=" | 313 | </span><span·class="n">Pkt</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">diameter_packet</span><span·class="p"·data-group-id="9717515277-4">{</span><span·class="p"·data-group-id="9717515277-4">}</span><span·class="w"> |
| 314 | </span><span·class="n">ResultCode</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id=" | 314 | </span><span·class="n">ResultCode</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="9717515277-5">(</span><span·class="p"·data-group-id="9717515277-5">)</span></code></pre><p>An·incoming·CEA·has·been·rejected·for·the·indicated·reason.·An |
| 315 | integer-valued·<code·class="inline">Result</code>·indicates·the·result·code·sent·by·the·peer.·<code·class="inline">Caps</code> | 315 | integer-valued·<code·class="inline">Result</code>·indicates·the·result·code·sent·by·the·peer.·<code·class="inline">Caps</code> |
| 316 | contains·pairs·of·values·for·the·local·node·and·remote·peer.·<code·class="inline">Pkt</code> | 316 | contains·pairs·of·values·for·the·local·node·and·remote·peer.·<code·class="inline">Pkt</code> |
| 317 | contains·the·CEA·in·question.·In·the·case·of·rejection·by·a·capabilities | 317 | contains·the·CEA·in·question.·In·the·case·of·rejection·by·a·capabilities |
| 318 | callback,·the·tuple·contains·the·rejecting·callback.</p></li><li><p><strong><code·class="inline">{'CEA',·Caps,·Pkt}</code></strong></p><pre><code·class="text">Caps·=·#diameter_caps{} | 318 | callback,·the·tuple·contains·the·rejecting·callback.</p></li><li><p><strong><code·class="inline">{'CEA',·Caps,·Pkt}</code></strong></p><pre><code·class="text">Caps·=·#diameter_caps{} |
| 319 | Pkt··=·#diameter_packet{}</code></pre><p>An·incoming·CEA·contained·errors·and·has·been·rejected.·<code·class="inline">Caps</code>·contains | 319 | Pkt··=·#diameter_packet{}</code></pre><p>An·incoming·CEA·contained·errors·and·has·been·rejected.·<code·class="inline">Caps</code>·contains |
| 320 | only·values·for·the·local·node.·<code·class="inline">Pkt</code>·contains·the·CEA·in·question.</p></li><li><p><strong><code·class="inline">{'CEA',·timeout}</code></strong>·-·An·expected·CEA·was·not·received·within | 320 | only·values·for·the·local·node.·<code·class="inline">Pkt</code>·contains·the·CEA·in·question.</p></li><li><p><strong><code·class="inline">{'CEA',·timeout}</code></strong>·-·An·expected·CEA·was·not·received·within |
| 321 | <a·href="diameter.html#capx_timeout">capx_timeout</a>·of·connection·establishment.</p></li></ul></li><li><p><strong><code·class="inline">{watchdog,·Ref,·PeerRef,·{From,·To},·Config}</code></strong></p><pre><code·class="c">Ref·=·transport_ref() | 321 | <a·href="diameter.html#capx_timeout">capx_timeout</a>·of·connection·establishment.</p></li></ul></li><li><p><strong><code·class="inline">{watchdog,·Ref,·PeerRef,·{From,·To},·Config}</code></strong></p><pre><code·class="c">Ref·=·transport_ref() |
| Offset 565, 18 lines modified | Offset 565, 18 lines modified | ||
| 565 | Term·passed·as·the·third·argument·to·the | 565 | Term·passed·as·the·third·argument·to·the |
| 566 | <a·href="diameter_transport.html#c:start/3">start/3</a>·function·of·the·relevant | 566 | <a·href="diameter_transport.html#c:start/3">start/3</a>·function·of·the·relevant |
| 567 | <a·href="diameter_transport.html">transport·module</a>·in·order·to·start·a·transport | 567 | <a·href="diameter_transport.html">transport·module</a>·in·order·to·start·a·transport |
| 568 | process.·Defaults·to·the·empty·list.</p><p>The·3-tuple·form·additionally·specifies·an·interval,·in·milliseconds,·after | 568 | process.·Defaults·to·the·empty·list.</p><p>The·3-tuple·form·additionally·specifies·an·interval,·in·milliseconds,·after |
| 569 | which·a·started·transport·process·should·be·terminated·if·it·has·not·yet | 569 | which·a·started·transport·process·should·be·terminated·if·it·has·not·yet |
| 570 | established·a·connection.·For·example,·the·following·options·on·a·connecting | 570 | established·a·connection.·For·example,·the·following·options·on·a·connecting |
| 571 | transport·request·a·connection·with·one·peer·over·SCTP·or·another·(typically | 571 | transport·request·a·connection·with·one·peer·over·SCTP·or·another·(typically |
| 572 | the·same)·over·TCP.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 572 | the·same)·over·TCP.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="5782110248-1">{</span><span·class="ss">transport_module</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">diameter_sctp</span><span·class="p"·data-group-id="5782110248-1">}</span><span·class="w"> |
| 573 | </span><span·class="p"·data-group-id=" | 573 | </span><span·class="p"·data-group-id="5782110248-2">{</span><span·class="ss">transport_config</span><span·class="p">,</span><span·class="w">·</span><span·class="n">SctpOpts</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">5000</span><span·class="p"·data-group-id="57821102[·...·truncated·by·diffoscope;·len:·2,·SHA:·98010bd9270f9b100b6214a21754fd33bdc8d41b2bc9f9dd16ff54d3c34ffd71·...·]-2">}</span><span·class="w"> |
| 574 | </span><span·class="p"·data-group-id=" | 574 | </span><span·class="p"·data-group-id="5782110248-3">{</span><span·class="ss">transport_module</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">diameter_tcp</span><span·class="p"·data-group-id="5782110248-3">}</span><span·class="w"> |
| 575 | </span><span·class="p"·data-group-id=" | 575 | </span><span·class="p"·data-group-id="5782110248-4">{</span><span·class="ss">transport_config</span><span·class="p">,</span><span·class="w">·</span><span·class="n">TcpOpts</span><span·class="p"·data-group-id="5782110248-4">}</span></code></pre><p>To·listen·on·both·SCTP·and·TCP,·define·one·transport·for·each.</p></li><li><p><strong><code·class="inline"·id="transport_module">{transport_module,·atom()}</code></strong>·-·Module·implementing |
| 576 | a·transport·process·as·defined·in·<a·href="diameter_transport.html"><code·class="inline">diameter_transport</code></a>.·Defaults·to | 576 | a·transport·process·as·defined·in·<a·href="diameter_transport.html"><code·class="inline">diameter_transport</code></a>.·Defaults·to |
| 577 | <code·class="inline">diameter_tcp</code>.</p><p>Multiple·<code·class="inline">transport_module</code>·and | 577 | <code·class="inline">diameter_tcp</code>.</p><p>Multiple·<code·class="inline">transport_module</code>·and |
| 578 | <a·href="diameter.html#transport_config">transport_config</a>·options·are·allowed.·The | 578 | <a·href="diameter.html#transport_config">transport_config</a>·options·are·allowed.·The |
| 579 | order·of·these·is·significant·in·this·case·(and·only·in·this·case),·a | 579 | order·of·these·is·significant·in·this·case·(and·only·in·this·case),·a |
| 580 | <code·class="inline">transport_module</code>·being·paired·with·the·first | 580 | <code·class="inline">transport_module</code>·being·paired·with·the·first |
| 581 | <a·href="diameter.html#transport_config">transport_config</a>·following·it·in·the | 581 | <a·href="diameter.html#transport_config">transport_config</a>·following·it·in·the |
| 582 | options·list,·or·the·default·value·for·trailing·modules.·Transport·starts | 582 | options·list,·or·the·default·value·for·trailing·modules.·Transport·starts |
| Offset 2471, 21 lines modified | Offset 2471, 21 lines modified | ||
| 2471 | ··························when·SvcName·::·<a·href="#t:service_name/0">service_name</a>(),·Pred·::·<a·href="#t:transport_pred/0">transport_pred</a>(),·Reason·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> | 2471 | ··························when·SvcName·::·<a·href="#t:service_name/0">service_name</a>(),·Pred·::·<a·href="#t:transport_pred/0">transport_pred</a>(),·Reason·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 2472 | ······</div> | 2472 | ······</div> |
| 2473 | <p>Remove·previously·added·transports.</p><p><code·class="inline">Pred</code>·determines·which·transports·to·remove.·An·arity-3-valued·<code·class="inline">Pred</code>·removes | 2473 | <p>Remove·previously·added·transports.</p><p><code·class="inline">Pred</code>·determines·which·transports·to·remove.·An·arity-3-valued·<code·class="inline">Pred</code>·removes |
| 2474 | all·transports·for·which·<code·class="inline">Pred(Ref,·Type,·Opts)</code>·returns·<code·class="inline">true</code>,·where·<code·class="inline">Type</code> | 2474 | all·transports·for·which·<code·class="inline">Pred(Ref,·Type,·Opts)</code>·returns·<code·class="inline">true</code>,·where·<code·class="inline">Type</code> |
| 2475 | and·<code·class="inline">Opts</code>·are·as·passed·to·<a·href="#add_transport/2"><code·class="inline">add_transport/2</code></a>·and·<code·class="inline">Ref</code>·is·as·returned·by·it. | 2475 | and·<code·class="inline">Opts</code>·are·as·passed·to·<a·href="#add_transport/2"><code·class="inline">add_transport/2</code></a>·and·<code·class="inline">Ref</code>·is·as·returned·by·it. |
| 2476 | The·remaining·forms·are·equivalent·to·an·arity-3·fun·as·follows.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Pred</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 2476 | The·remaining·forms·are·equivalent·to·an·arity-3·fun·as·follows.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Pred</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="0884750619-1">(</span><span·class="nf">transport_ref</span><span·class="p"·data-group-id="0884750619-2">(</span><span·class="p"·data-group-id="0884750619-2">)</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">list</span><span·class="p"[·...·truncated·by·diffoscope;·len:·797,·SHA:·a138c761b94e3aa4847884b474d391d18bb75199b5c098f8500d7834921bc42a·...·]-5">)</span><span·class="w">·</span><span·class="k">end</span><span·class="w"> |
| 2477 | </span><span·class="n">Pred</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 2477 | </span><span·class="n">Pred</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="0884750619-6">(</span><span·class="nf">list</span><span·class="p"·data-group-id="0884750619-7">(</span><span·class="p"·data-group-id="0884750619-7">)</span><span·class="p"·data-group-id="0884750619-6">)</span><span·class="p">:</span><span·class="w">·······[·...·truncated·by·diffoscope;·len:·547,·SHA:·53c27f9678a16e7c2d6b0c33765b1ba3dc8c9d2d7839812c6b9c0d815822a65e·...·]-9">)</span><span·class="w">·</span><span·class="k">end</span><span·class="w"> |
| 2478 | </span><span·class="n">Pred</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">transport_ref</span><span·class="p"·data-group-id=" | 2478 | </span><span·class="n">Pred</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">transport_ref</span><span·class="p"·data-group-id="0884750619-10">(</span><span·class="p"·data-group-id="0884750619-10">)</span><span·class="p">:</span><span·class="w">···············</span><span·class="nf">fun</span><span·class="p"·data-group-id="0884750619-11">(</span><span·class="n">Ref</span><span·clas[·...·truncated·by·diffoscope;·len:·175,·SHA:·b689baab2094999e51f8f75e4d564ef0a1eaee61f0ee8cddd86b1cea727ba908·...·]-11">)</span><span·class="w">··</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Pred</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="n">Ref</span><span·class="w">·</span><span·class="k">end</span><span·class="w"> |
| 2479 | </span><span·class="n">Pred</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">list</span><span·class="p"·data-group-id=" | 2479 | </span><span·class="n">Pred</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">list</span><span·class="p"·data-group-id="0884750619-12">(</span><span·class="p"·data-group-id="0884750619-12">)</span><span·class="p">:</span><span·class="w">························</span><span·class="nf">fun</span><span·class="p"·data-group-id="0884750619-13">(</span><span·class="p">_</span><sp[·...·truncated·by·diffoscope;·len:·369,·SHA:·829da9fd7a658712c6b6017ab24dc91c4c26bbfe4304074fbb750a8cd912047d·...·]-14">]</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="n">Pred</span><span·class="w">·</span><span·class="o">--</span><span·class="w">·</span><span·class="n">Opts</span><span·class="w">·</span><span·class="k">end</span><span·class="w"> |
| 2480 | </span><span·class="n">Pred</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">true</span><span·class="p">:</span><span·class="w">··························</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 2480 | </span><span·class="n">Pred</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">true</span><span·class="p">:</span><span·class="w">··························</span><span·class="nf">fun</span><span·class="p"·data-group-id="0884750619-15">(</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="p"·data-group-id="0884750619-15">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">true</span><span·class="w">·</span><span·class="k">end</span><span·class="w"> |
| 2481 | </span><span·class="n">Pred</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">false</span><span·class="p">:</span><span·class="w">·························</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 2481 | </span><span·class="n">Pred</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">false</span><span·class="p">:</span><span·class="w">·························</span><span·class="nf">fun</span><span·class="p"·data-group-id="0884750619-16">(</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="p"·data-group-id="0884750619-16">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">false</span><span·class="w">·</span><span·class="k">end</span><span·class="w"> |
| 2482 | </span><span·class="n">Pred</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 2482 | </span><span·class="n">Pred</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="0884750619-17">{</span><span·class="n">M</span><span·class="p">,</span><span·class="n">F</span><span·class="p">,</span><span·class="n">A</span><span·class="p"·data-group-id="0884750619-17">}</span><span·class="p">:</span><span·class="w">··</span><span·clas[·...·truncated·by·diffoscope;·len:·1025,·SHA:·acbabfed83b18c25c3741a2f32656162ec191337c2021775db3e4efc04472408·...·]-19">)</span><span·class="w">·</span><span·class="k">end</span></code></pre><p>Removing·a·transport·causes·the·corresponding·transport·processes·to·be |
| 2483 | terminated.·Whether·or·not·a·DPR·message·is·sent·to·a·peer·is·controlled·by | 2483 | terminated.·Whether·or·not·a·DPR·message·is·sent·to·a·peer·is·controlled·by |
| 2484 | value·of·<a·href="diameter.html#disconnect_cb">disconnect_cb</a>·configured·on·the | 2484 | value·of·<a·href="diameter.html#disconnect_cb">disconnect_cb</a>·configured·on·the |
| 2485 | transport.</p> | 2485 | transport.</p> |
| 2486 | ··</section> | 2486 | ··</section> |
| 2487 | </section> | 2487 | </section> |
| 2488 | <section·class="detail"·id="service_info/2"> | 2488 | <section·class="detail"·id="service_info/2"> |
| Offset 2519, 60 lines modified | Offset 2519, 60 lines modified | ||
| 2519 | <a·href="#start_service/2"><code·class="inline">start_service/2</code></a>.</p></li><li><p><strong><code·class="inline">applications</code></strong>·-·Return·the·list·of·applications·as·configured·with | 2519 | <a·href="#start_service/2"><code·class="inline">start_service/2</code></a>.</p></li><li><p><strong><code·class="inline">applications</code></strong>·-·Return·the·list·of·applications·as·configured·with |
| 2520 | <a·href="#start_service/2"><code·class="inline">start_service/2</code></a>.</p></li><li><p><strong><code·class="inline">capabilities</code></strong>·-·Return·a·tagged·list·of·all·capabilities·values·as | 2520 | <a·href="#start_service/2"><code·class="inline">start_service/2</code></a>.</p></li><li><p><strong><code·class="inline">capabilities</code></strong>·-·Return·a·tagged·list·of·all·capabilities·values·as |
| 2521 | configured·with·<a·href="#start_service/2"><code·class="inline">start_service/2</code></a>.</p></li><li><p><strong><code·class="inline">transport</code></strong>·-·Return·a·list·containing·one·entry·for·each·of·the·service's | 2521 | configured·with·<a·href="#start_service/2"><code·class="inline">start_service/2</code></a>.</p></li><li><p><strong><code·class="inline">transport</code></strong>·-·Return·a·list·containing·one·entry·for·each·of·the·service's |
| 2522 | transport·as·configured·with·<a·href="#add_transport/2"><code·class="inline">add_transport/2</code></a>.·Each·entry·is·a·tagged·list | 2522 | transport·as·configured·with·<a·href="#add_transport/2"><code·class="inline">add_transport/2</code></a>.·Each·entry·is·a·tagged·list |
| 2523 | containing·both·configuration·and·information·about·established·peer | 2523 | containing·both·configuration·and·information·about·established·peer |
| 2524 | connections.·An·example·return·value·with·for·a·client·service·with | 2524 | connections.·An·example·return·value·with·for·a·client·service·with |
| 2525 | Origin-Host·"client.example.com"·configured·with·a·single·transport·connected | 2525 | Origin-Host·"client.example.com"·configured·with·a·single·transport·connected |
| 2526 | to·"server.example.com"·might·look·as·follows.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="6 | 2526 | to·"server.example.com"·might·look·as·follows.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="6735408844-1">[</span><span·class="p"·data-group-id="6735408844-2">[</span><span·class="p"·data-group-id="6735408844-3">{</span><span·class="ss">ref</span><span·class="p">,</span><span·class="p">#</span><span·class="n">Ref</span><span·class="o"><</span><[·...·truncated·by·diffoscope;·len:·146,·SHA:·e85f3df415b09f91623468f7d765142b75c284fa6c5a6c1cfc83ea1b417034d2·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 2527 | ··</span><span·class="p"·data-group-id="6 | 2527 | ··</span><span·class="p"·data-group-id="6735408844-4">{</span><span·class="ss">type</span><span·class="p">,</span><span·class="ss">connect</span><span·class="p"·data-group-id="6735408844-4">}</span><span·class="p">,</span><span·class="w"> |
| 2528 | ··</span><span·class="p"·data-group-id="6241196306-5">{</span><span·class="ss">options</span><span·class="p">,</span><span·class="p"·data-group-id="6241196306-6">[</span><span·class="p"·data-group-id="6241196306-7">{</span><span·class="ss">transport_module</span><span·class="p">,</span><span·class="ss">diameter_tcp</span><span·class="p"·data-group-id="6241196306-7">}</span><span·class="p">,</span><span·class="w"> | ||
| 2529 | ·· | 2528 | ··</span><span·class="p"·data-group-id="6735408844-5">{</span><span·class="ss">options</span><span·class="p">,</span><span·class="p"·data-group-id="6735408844-6">[</span><span·class="p"·data-group-id="6735408844-7">{</span><span·class="ss">transport_module</[·...·truncated·by·diffoscope;·len:·108,·SHA:·558549081e167167f32ebe65e5b1b87abdd3631ed713dcb26d0bfe5b9df055b1·...·]">}</span><span·class="p">,</span><span·class="w"> |
| 2529 | ············</span><span·class="p"·data-group-id="6735408844-8">{</span><span·class="ss">transport_config</span><span·class="p">,</span><span·class="p"·data-group-id="6735408844-9">[</span><span·class="p"·data-group-id="6735408844-10">{</span><span·class="ss">ip</span><span·class="p">,</span><span·class="p"·data-group-id="6735408844-11">{</span><span·class="mi">127</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="6735408844-11">}</span><span·class="p"·data-group-id="6735408844-10">}</span><span·class="p">,</span><span·class="w"> | ||
| 2530 | ·······························</span><span·class="p"·data-group-id="6 | 2530 | ·······························</span><span·class="p"·data-group-id="6735408844-12">{</span><span·class="ss">raddr</span><span·class="p">,</span><span·class="p"·data-group-id="6735408844-13">{</span><span·class="mi">127</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><s[·...·truncated·by·diffoscope;·len:·142,·SHA:·37099a61db00b4933ea518658f89220b38e01a8f5f15ed4a14f013480b72d0e8·...·]-12">}</span><span·class="p">,</span><span·class="w"> |
| 2531 | ·······························</span><span·class="p"·data-group-id="6 | 2531 | ·······························</span><span·class="p"·data-group-id="6735408844-14">{</span><span·class="ss">rport</span><span·class="p">,</span><span·class="mi">3868</span><span·class="p"·data-group-id="6735408844-14">}</span><span·class="p">,</span><span·class="w"> |
| 2532 | ·······························</span><span·class="p"·data-group-id="6 | 2532 | ·······························</span><span·class="p"·data-group-id="6735408844-15">{</span><span·class="ss">reuseaddr</span><span·class="p">,</span><span·class="ss">true</span><span·class="p"·data-group-id="6735408844-15">}</span><span·class="p"·data-group-id="6735408844-9">]</span><span·class="p"·data-group-id="6735408844-[·...·truncated·by·diffoscope;·len:·105,·SHA:·250b6e82699d48f3c57c131c43e0b1d6ece5c74cff8e4449fb95307d5b9567f8·...·]-5">}</span><span·class="p">,</span><span·class="w"> |
| 2533 | ··</span><span·class="p"·data-group-id="6 | 2533 | ··</span><span·class="p"·data-group-id="6735408844-16">{</span><span·class="ss">watchdog</span><span·class="p">,</span><span·class="p"·data-group-id="6735408844-17">{</span><span·class="o"><</span><span·class="mf">0.66</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">>[·...·truncated·by·diffoscope;·len:·244,·SHA:·d700516e6b15925608457dbe464c791d52da71c737d3ea1d6545b94cb05d268d·...·]-16">}</span><span·class="p">,</span><span·class="w"> |
| 2534 | ··</span><span·class="p"·data-group-id="6 | 2534 | ··</span><span·class="p"·data-group-id="6735408844-18">{</span><span·class="ss">peer</span><span·class="p">,</span><span·class="p"·data-group-id="6735408844-19">{</span><span·class="o"><</span><span·class="mf">0.67</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></sp[·...·truncated·by·diffoscope;·len:·188,·SHA:·a570d70c469f19695d7686d7751c59533e1d9888526fc7db2fd5a3686277ef6d·...·]-18">}</span><span·class="p">,</span><span·class="w"> |
| 2535 | ··</span><span·class="p"·data-group-id="6 | 2535 | ··</span><span·class="p"·data-group-id="6735408844-20">{</span><span·class="ss">apps</span><span·class="p">,</span><span·class="p"·data-group-id="6735408844-21">[</span><span·class="p"·data-group-id="6735408844-22">{</span><span·class="mi">0</span><span·class="p">,</span><span·class="ss">common</[·...·truncated·by·diffoscope;·len:·154,·SHA:·3d2b05fe8a76d6f3ec479dbe61a89ba6da16b8f4bc0bf65b0e4879f5c521c0e0·...·]-20">}</span><span·class="p">,</span><span·class="w"> |
| 2536 | ··</span><span·class="p"·data-group-id="6 | 2536 | ··</span><span·class="p"·data-group-id="6735408844-23">{</span><span·class="ss">caps</span><span·class="p">,</span><span·class="p"·data-group-id="6735408844-24">[</span><span·class="p"·data-group-id="6735408844-25">{</span><span·class="ss">origin_host</span><span·class="p">,</span><span·class="p"[·...·truncated·by·diffoscope;·len:·264,·SHA:·ba2e790a8169773d11e268689c972eb784be556cfb3f84786029bb15d7c78f0b·...·]-25">}</span><span·class="p">,</span><span·class="w"> |
| 2537 | ·········</span><span·class="p"·data-group-id="6241196306-27">{</span><span·class="ss">origin_realm</span><span·class="p">,</span><span·class="p"·data-group-id="6241196306-28">{</span><span·class="s">"example.com"</span><span·class="p">,</span><span·class="s">"example.com"</span><span·class="p"·data-group-id="6241196306-28">}</span><span·class="p"·data-group-id="6241196306-27">}</span><span·class="p">,</span><span·class="w"> | ||
| 2538 | ·········</span><span·class="p"·data-group-id="6 | 2537 | ·········</span><span·class="p"·data-group-id="6735408844-27">{</span><span·class="ss">origin_realm</span><span·class="p">,</span><span·class="p"·data-group-id="6735408844-28">{</span><span·class="s">"example.com"</span><span·class="p">,</span><span·class="s">"example.com"</span><spa[·...·truncated·by·diffoscope;·len:·94,·SHA:·951a0b0f8942c23b87016e69fe3008fcb79302ffb8d24580a8f37e00a3f02cf9·...·]">}</span><span·class="p">,</span><span·class="w"> |
| 2538 | ·········</span><span·class="p"·data-group-id="6735408844-29">{</span><span·class="ss">host_ip_address</span><span·class="p">,</span><span·class="p"·data-group-id="6735408844-30">{</span><span·class="p"·data-group-id="6735408844-31">[</span><span·class="p"·data-group-id="6735408844-32">{</span><span·class="mi">127</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="6735408844-32">}</span><span·class="p"·data-group-id="6735408844-31">]</span><span·class="p">,</span><span·class="p"·data-group-id="6735408844-33">[</span><span·class="p"·data-group-id="6735408844-34">{</span><span·class="mi">127</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="6735408844-34">}</span><span·class="p"·data-group-id="6735408844-33">]</span><span·class="p"·data-group-id="6735408844-30">}</span><span·class="p"·data-group-id="6735408844-29">}</span><span·class="p">,</span><span·class="w"> | ||
| 2539 | ·········</span><span·class="p"·data-group-id="6 | 2539 | ·········</span><span·class="p"·data-group-id="6735408844-35">{</span><span·class="ss">vendor_id</span><span·class="p">,</span><span·class="p"·data-group-id="6735408844-36">{</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">193</span><span·class="p"·data-group-id="6735408844-36">}[·...·truncated·by·diffoscope;·len:·48,·SHA:·dc482bf08e3f5be916247344d64d3f6535a404c527b15a0f009eb7ed58504ace·...·]-35">}</span><span·class="p">,</span><span·class="w"> |
| 2540 | ·········</span><span·class="p"·data-group-id="6 | 2540 | ·········</span><span·class="p"·data-group-id="6735408844-37">{</span><span·class="ss">product_name</span><span·class="p">,</span><span·class="p"·data-group-id="6735408844-38">{</span><span·class="s">"Client"</span><span·class="p">,</span><span·class="s">"Server"</span><span·class="p[·...·truncated·by·diffoscope;·len:·81,·SHA:·4fc94ea7b3fb0ee2a12fd243f3c0a534044e87243a5cb475306520ff330b0f4c·...·]-37">}</span><span·class="p">,</span><span·class="w"> |
| 2541 | ·········</span><span·class="p"·data-group-id="6 | 2541 | ·········</span><span·class="p"·data-group-id="6735408844-39">{</span><span·class="ss">origin_state_id</span><span·class="p">,</span><span·class="p"·data-group-id="6735408844-40">{</span><span·class="p"·data-group-id="6735408844-41">[</span><span·class="p"·data-group-id="6735408844-41">]</span><span·cla[·...·truncated·by·diffoscope;·len:·218,·SHA:·28822623340a27ca6f0b71af5fecc907a6853e3c4a7b0722088c1684f4759a2d·...·]-39">}</span><span·class="p">,</span><span·class="w"> |
| 2542 | ·········</span><span·class="p"·data-group-id="6 | 2542 | ·········</span><span·class="p"·data-group-id="6735408844-43">{</span><span·class="ss">supported_vendor_id</span><span·class="p">,</span><span·class="p"·data-group-id="6735408844-44">{</span><span·class="p"·data-group-id="6735408844-45">[</span><span·class="p"·data-group-id="6735408844-45">]</span><span[·...·truncated·by·diffoscope;·len:·222,·SHA:·eabd74118d38f0b589bc7c6b0461dd7a38c88aeed2344a4c0092bf896dbbaa57·...·]-43">}</span><span·class="p">,</span><span·class="w"> |
| 2543 | ·········</span><span·class="p"·data-group-id="6241196306-47">{</span><span·class="ss">auth_application_id</span><span·class="p">,</span><span·class="p"·data-group-id="6241196306-48">{</span><span·class="p"·data-group-id="6241196306-49">[</span><span·class="mi">0</span><span·class="p"·data-group-id="6241196306-49">]</span><span·class="p">,</span><span·class="p"·data-group-id="6241196306-50">[</span><span·class="mi">0</span><span·class="p"·data-group-id="6241196306-50">]</span><span·class="p"·data-group-id="6241196306-48">}</span><span·class="p"·data-group-id="6241196306-47">}</span><span·class="p">,</span><span·class="w"> | ||
| 2544 | ·········</span><span·class="p"·data-group-id="6 | 2543 | ·········</span><span·class="p"·data-group-id="6735408844-47">{</span><span·class="ss">auth_application_id</span><span·class="p">,</span><span·class="p"·data-group-id="6735408844-48">{</span><span·class="p"·data-group-id="6735408844-49">[</span><span·class="mi">0</span><span·class="p"·data-group-id="673[·...·truncated·by·diffoscope;·len:·275,·SHA:·39e27d470c5d2f5a1d007d643ef7cbb1013edc60b5c929985cdd155eabb33ec6·...·]">}</span><span·class="p">,</span><span·class="w"> |
| 2544 | ·········</span><span·class="p"·data-group-id="6735408844-51">{</span><span·class="ss">inband_security_id</span><span·class="p">,</span><span·class="p"·data-group-id="6735408844-52">{</span><span·class="p"·data-group-id="6735408844-53">[</span><span·class="p"·data-group-id="6735408844-53">]</span><span·class="p">,</span><span·class="p"·data-group-id="6735408844-54">[</span><span·class="mi">0</span><span·class="p"·data-group-id="6735408844-54">]</span><span·class="p"·data-group-id="6735408844-52">}</span><span·class="p"·data-group-id="6735408844-51">}</span><span·class="p">,</span><span·class="w"> | ||
| 2545 | ·········</span><span·class="p"·data-group-id="6 | 2545 | ·········</span><span·class="p"·data-group-id="6735408844-55">{</span><span·class="ss">acct_application_id</span><span·class="p">,</span><span·class="p"·data-group-id="6735408844-56">{</span><span·class="p"·data-group-id="6735408844-57">[</span><span·class="p"·data-group-id="6735408844-57">]</span><span[·...·truncated·by·diffoscope;·len:·222,·SHA:·3948462634cf023c63132951aa6895753f928dae720cdba21c3a4c419ac074f5·...·]-55">}</span><span·class="p">,</span><span·class="w"> |
| 2546 | ·········</span><span·class="p"·data-group-id="6 | 2546 | ·········</span><span·class="p"·data-group-id="6735408844-59">{</span><span·class="ss">vendor_specific_application_id</span><span·class="p">,</span><span·class="p"·data-group-id="6735408844-60">{</span><span·class="p"·data-group-id="6735408844-61">[</span><span·class="p"·data-group-id="6735408844-61">]<[·...·truncated·by·diffoscope;·len:·233,·SHA:·4914d01dc6d5cabf03d418d2f176d9ff33bd673cea36989812c9865bcdd78e75·...·]-59">}</span><span·class="p">,</span><span·class="w"> |
| 2547 | ·········</span><span·class="p"·data-group-id="6 | 2547 | ·········</span><span·class="p"·data-group-id="6735408844-63">{</span><span·class="ss">firmware_revision</span><span·class="p">,</span><span·class="p"·data-group-id="6735408844-64">{</span><span·class="p"·data-group-id="6735408844-65">[</span><span·class="p"·data-group-id="6735408844-65">]</span><span·c[·...·truncated·by·diffoscope;·len:·220,·SHA:·9a888f873cfdfadbed23024166d8ec7aeac847997bb5ade36d54b58ac66c5706·...·]-63">}</span><span·class="p">,</span><span·class="w"> |
| 2548 | ·········</span><span·class="p"·data-group-id="6 | 2548 | ·········</span><span·class="p"·data-group-id="6735408844-67">{</span><span·class="ss">avp</span><span·class="p">,</span><span·class="p"·data-group-id="6735408844-68">{</span><span·class="p"·data-group-id="6735408844-69">[</span><span·class="p"·data-group-id="6735408844-69">]</span><span·class="p">,</sp[·...·truncated·by·diffoscope;·len:·314,·SHA:·4bd4cfda191a8d3db22856d403d0d92ae59eed7178763c83f729cbb448c9ad6f·...·]-23">}</span><span·class="p">,</span><span·class="w"> |
| 2549 | ··</span><span·class="p"·data-group-id="6 | 2549 | ··</span><span·class="p"·data-group-id="6735408844-71">{</span><span·class="ss">port</span><span·class="p">,</span><span·class="p"·data-group-id="6735408844-72">[</span><span·class="p"·data-group-id="6735408844-73">{</span><span·class="ss">owner</span><span·class="p">,</span><span·class="o"><<[·...·truncated·by·diffoscope;·len:·151,·SHA:·5696ae2950c66cd91a550ab9ba00252fb74e33b8ac83b5a3befa029cca33131b·...·]-73">}</span><span·class="p">,</span><span·class="w"> |
| 2550 | ·········</span><span·class="p"·data-group-id="6 | 2550 | ·········</span><span·class="p"·data-group-id="6735408844-74">{</span><span·class="ss">module</span><span·class="p">,</span><span·class="ss">diameter_tcp</span><span·class="p"·data-group-id="6735408844-74">}</span><span·class="p">,</span><span·class="w"> |
| 2551 | ·········</span><span·class="p"·data-group-id="6 | 2551 | ·········</span><span·class="p"·data-group-id="6735408844-75">{</span><span·class="ss">socket</span><span·class="p">,</span><span·class="p"·data-group-id="6735408844-76">{</span><span·class="p"·data-group-id="6735408844-77">{</span><span·class="mi">127</span><span·class="p">,</span><span·class="mi">0</s[·...·truncated·by·diffoscope;·len:·304,·SHA:·1a9fc20b9258ab00ed06174a56d260e5afddbbe012dd7bd275a13d4b103df83f·...·]-75">}</span><span·class="p">,</span><span·class="w"> |
| 2552 | ·········</span><span·class="p"·data-group-id="6 | 2552 | ·········</span><span·class="p"·data-group-id="6735408844-78">{</span><span·class="ss">peer</span><span·class="p">,</span><span·class="p"·data-group-id="6735408844-79">{</span><span·class="p"·data-group-id="6735408844-80">{</span><span·class="mi">127</span><span·class="p">,</span><span·class="mi">0</spa[·...·truncated·by·diffoscope;·len:·301,·SHA:·c3d549b6225ea85a2a0a156fba679b9a06d2fa3e98ba144cb641fdac0fdcdb24·...·]-78">}</span><span·class="p">,</span><span·class="w"> |
| 2553 | ·········</span><span·class="p"·data-group-id="6 | 2553 | ·········</span><span·class="p"·data-group-id="6735408844-81">{</span><span·class="nb">statistics</span><span·class="p">,</span><span·class="p"·data-group-id="6735408844-82">[</span><span·class="p"·data-group-id="6735408844-83">{</span><span·class="ss">recv_oct</span><span·class="p">,</span><span·class=[·...·truncated·by·diffoscope;·len:·56,·SHA:·5f02380a145c56909ea182a7f782f1d8935a445ea96c0efcd6609b8cde5cbbaf·...·]-83">}</span><span·class="p">,</span><span·class="w"> |
| 2554 | ······················</span><span·class="p"·data-group-id="6 | 2554 | ······················</span><span·class="p"·data-group-id="6735408844-84">{</span><span·class="ss">recv_cnt</span><span·class="p">,</span><span·class="mi">6</span><span·class="p"·data-group-id="6735408844-84">}</span><span·class="p">,</span><span·class="w"> |
| 2555 | ······················</span><span·class="p"·data-group-id="6 | 2555 | ······················</span><span·class="p"·data-group-id="6735408844-85">{</span><span·class="ss">recv_max</span><span·class="p">,</span><span·class="mi">148</span><span·class="p"·data-group-id="6735408844-85">}</span><span·class="p">,</span><span·class="w"> |
| 2556 | ······················</span><span·class="p"·data-group-id="6 | 2556 | ······················</span><span·class="p"·data-group-id="6735408844-86">{</span><span·class="ss">recv_avg</span><span·class="p">,</span><span·class="mi">109</span><span·class="p"·data-group-id="6735408844-86">}</span><span·class="p">,</span><span·class="w"> |
| 2557 | ······················</span><span·class="p"·data-group-id="6 | 2557 | ······················</span><span·class="p"·data-group-id="6735408844-87">{</span><span·class="ss">recv_dvi</span><span·class="p">,</span><span·class="mi">19</span><span·class="p"·data-group-id="6735408844-87">}</span><span·class="p">,</span><span·class="w"> |
| 2558 | ······················</span><span·class="p"·data-group-id="6 | 2558 | ······················</span><span·class="p"·data-group-id="6735408844-88">{</span><span·class="ss">send_oct</span><span·class="p">,</span><span·class="mi">836</span><span·class="p"·data-group-id="6735408844-88">}</span><span·class="p">,</span><span·class="w"> |
| 2559 | ······················</span><span·class="p"·data-group-id="6 | 2559 | ······················</span><span·class="p"·data-group-id="6735408844-89">{</span><span·class="ss">send_cnt</span><span·class="p">,</span><span·class="mi">6</span><span·class="p"·data-group-id="6735408844-89">}</span><span·class="p">,</span><span·class="w"> |
| Max diff block lines reached; 116439/202476 bytes (57.51%) of diff not shown. | |||
| Offset 697, 20 lines modified | Offset 697, 20 lines modified | ||
| 697 | ······</div> | 697 | ······</div> |
| 698 | <p>Invoked·when·a·request·message·is·received·from·a·peer.·The·application·in·which | 698 | <p>Invoked·when·a·request·message·is·received·from·a·peer.·The·application·in·which |
| 699 | the·callback·takes·place·(that·is,·the·callback·module·as·configured·with | 699 | the·callback·takes·place·(that·is,·the·callback·module·as·configured·with |
| 700 | <a·href="diameter.html#start_service/2"><code·class="inline">diameter:start_service/2</code></a>)·is·determined·by·the·Application·Identifier·in·the | 700 | <a·href="diameter.html#start_service/2"><code·class="inline">diameter:start_service/2</code></a>)·is·determined·by·the·Application·Identifier·in·the |
| 701 | header·of·the·incoming·request·message,·the·selected·module·being·the·one·whose | 701 | header·of·the·incoming·request·message,·the·selected·module·being·the·one·whose |
| 702 | corresponding·dictionary·declares·itself·as·defining·either·the·application·in | 702 | corresponding·dictionary·declares·itself·as·defining·either·the·application·in |
| 703 | question·or·the·Relay·application.</p><p>The·argument·<a·href="#t:packet/0">packet()</a>·has·the·following·signature.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">#</span><span·class="ss">diameter_packet</span><span·class="p"·data-group-id=" | 703 | question·or·the·Relay·application.</p><p>The·argument·<a·href="#t:packet/0">packet()</a>·has·the·following·signature.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">#</span><span·class="ss">diameter_packet</span><span·class="p"·data-group-id="2622888394-1">{</span><span·class="ss">header</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">diameter_header</span><span·class="p"·data-group-id="2622888394-2">{</span><span·class="p"·[·...·truncated·by·diffoscope;·len:·25,·SHA:·afda41c89b8ea802b8bf98f0124fa0ddafb2f775b4567c66191bd32b23a259ea·...·]-2">}</span><span·class="p">,</span><span·class="w"> |
| 704 | ·················</span><span·class="ss">avps</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 704 | ·················</span><span·class="ss">avps</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2622888394-3">[</span><span·class="o">#</span><span·class="ss">diameter_avp</span><span·class="p"·data-group-id="2622888394-4">{</span><span·class="p"·data-group-id="2622888394-4">}</span><span·class="p"·data-group-id="2622888394-3">]</span><span·class="p">,</span><span·class="w"> |
| 705 | ·················</span><span·class="ss">msg</span><span·class="w">····</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">record</span><span·class="p"·data-group-id=" | 705 | ·················</span><span·class="ss">msg</span><span·class="w">····</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">record</span><span·class="p"·data-group-id="2622888394-5">(</span><span·class="p"·data-group-id="2622888394-5">)</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">undefined</span><span·class="p">,</span><span·class="w"> |
| 706 | ·················</span><span·class="ss">errors</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 706 | ·················</span><span·class="ss">errors</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2622888394-6">[</span><span·class="n">Unsigned32</span><span·class="p"·data-group-id="2622888394-7">(</span><span·class="p"·data-group-id="2622888394-7">)</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·479,·SHA:·bd9f16147e5730b59a8d7e4b9ab5783c9fe49dfe8b567d17b22772b987060a01·...·]-6">]</span><span·class="p">,</span><span·class="w"> |
| 707 | ·················</span><span·class="ss">bin</span><span·class="w">····</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">binary</span><span·class="p"·data-group-id=" | 707 | ·················</span><span·class="ss">bin</span><span·class="w">····</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">binary</span><span·class="p"·data-group-id="2622888394-11">(</span><span·class="p"·data-group-id="2622888394-11">)</span><span·class="p">,</span><span·class="w"> |
| 708 | ·················</span><span·class="ss">transport_data</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id=" | 708 | ·················</span><span·class="ss">transport_data</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id="2622888394-12">(</span><span·class="p"·data-group-id="2622888394-12">)</span><span·class="p"·data-group-id="2622888394-1">}</span></code></pre><p>The·<code·class="inline">msg</code>·field·will·be·<code·class="inline">undefined</code>·in·case·the·request·has·been·received·in·the |
| 709 | relay·application.·Otherwise·it·contains·the·record·representing·the·request·as | 709 | relay·application.·Otherwise·it·contains·the·record·representing·the·request·as |
| 710 | outlined·in·<a·href="diameter_dict.html#MESSAGE_RECORDS">diameter_dict(4)</a>.</p><p>The·<code·class="inline">errors</code>·field·specifies·any·results·codes·identifying·errors·found·while | 710 | outlined·in·<a·href="diameter_dict.html#MESSAGE_RECORDS">diameter_dict(4)</a>.</p><p>The·<code·class="inline">errors</code>·field·specifies·any·results·codes·identifying·errors·found·while |
| 711 | decoding·the·request.·This·is·used·to·set·Result-Code·and/or·Failed-AVP·in·a | 711 | decoding·the·request.·This·is·used·to·set·Result-Code·and/or·Failed-AVP·in·a |
| 712 | returned·answer·unless·the·callback·returns·a·<code·class="inline">#diameter_packet{}</code>·whose | 712 | returned·answer·unless·the·callback·returns·a·<code·class="inline">#diameter_packet{}</code>·whose |
| 713 | <code·class="inline">errors</code>·field·is·set·to·either·a·non-empty·list·of·its·own,·in·which·case·this | 713 | <code·class="inline">errors</code>·field·is·set·to·either·a·non-empty·list·of·its·own,·in·which·case·this |
| 714 | list·is·used·instead,·or·the·atom·<code·class="inline">false</code>·to·disable·any·setting·of·Result-Code | 714 | list·is·used·instead,·or·the·atom·<code·class="inline">false</code>·to·disable·any·setting·of·Result-Code |
| 715 | and·Failed-AVP.·Note·that·the·errors·detected·by·diameter·are·of·the·3xxx·and | 715 | and·Failed-AVP.·Note·that·the·errors·detected·by·diameter·are·of·the·3xxx·and |
| Offset 135, 15 lines modified | Offset 135, 15 lines modified | ||
| 135 | encode/decode.</p><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>The·diameter·user·does·not·need·to·call·functions·here·explicitly·when·sending | 135 | encode/decode.</p><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>The·diameter·user·does·not·need·to·call·functions·here·explicitly·when·sending |
| 136 | and·receiving·messages·using·<a·href="diameter.html#call/4"><code·class="inline">diameter:call/4</code></a>·and·the·callback·interface | 136 | and·receiving·messages·using·<a·href="diameter.html#call/4"><code·class="inline">diameter:call/4</code></a>·and·the·callback·interface |
| 137 | documented·in·<a·href="diameter_app.html"><code·class="inline">diameter_app</code></a>:·diameter·itself·provides·encode/decode·as·a | 137 | documented·in·<a·href="diameter_app.html"><code·class="inline">diameter_app</code></a>:·diameter·itself·provides·encode/decode·as·a |
| 138 | consequence·of·configuration·passed·to·<a·href="diameter.html#start_service/2"><code·class="inline">diameter:start_service/2</code></a>,·and·the | 138 | consequence·of·configuration·passed·to·<a·href="diameter.html#start_service/2"><code·class="inline">diameter:start_service/2</code></a>,·and·the |
| 139 | results·may·differ·from·those·returned·by·the·functions·documented·here, | 139 | results·may·differ·from·those·returned·by·the·functions·documented·here, |
| 140 | depending·on·configuration.</p></section><p>The·<a·href="diameter_codec.html#header">header()</a>·and | 140 | depending·on·configuration.</p></section><p>The·<a·href="diameter_codec.html#header">header()</a>·and |
| 141 | <a·href="diameter_codec.html#packet">packet()</a>·records·below·are·defined·in·diameter.hrl, | 141 | <a·href="diameter_codec.html#packet">packet()</a>·records·below·are·defined·in·diameter.hrl, |
| 142 | which·can·be·included·as·follows.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id=" | 142 | which·can·be·included·as·follows.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="7322514896-1">(</span><span·class="s">"diameter/include/diameter.hrl"</span><span·class="p"·data-group-id="7322514896-1">)</span><span·class="p">.</span></code></pre><p>Application-specific·records·are·defined·in·the·hrl·files·resulting·from |
| 143 | dictionary·file·compilation.</p><h2·id="module-data-types"·class="section-heading"> | 143 | dictionary·file·compilation.</p><h2·id="module-data-types"·class="section-heading"> |
| 144 | ··<a·href="#module-data-types"·class="hover-link"> | 144 | ··<a·href="#module-data-types"·class="hover-link"> |
| 145 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 145 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 146 | ··</a> | 146 | ··</a> |
| 147 | ··<span·class="text">DATA·TYPES</span> | 147 | ··<span·class="text">DATA·TYPES</span> |
| 148 | </h2> | 148 | </h2> |
| 149 | <ul><li><p><strong><code·class="inline"·id="integers">uint8() ·=·0..255</code></strong></p></li><li><p><strong><code·class="inline">uint24()·=·0..16777215</code></strong></p></li><li><p><strong><code·class="inline">uint32()·=·0..4294967295</code></strong>·-·8-bit,·24-bit·and·32-bit·integers·occurring | 149 | <ul><li><p><strong><code·class="inline"·id="integers">uint8() ·=·0..255</code></strong></p></li><li><p><strong><code·class="inline">uint24()·=·0..16777215</code></strong></p></li><li><p><strong><code·class="inline">uint32()·=·0..4294967295</code></strong>·-·8-bit,·24-bit·and·32-bit·integers·occurring |
| Offset 305, 37 lines modified | Offset 305, 37 lines modified | ||
| 305 | ("Derived·AVP·Data·Formats")·of·RFC·6733·are·encoded·as·values·of·the·types | 305 | ("Derived·AVP·Data·Formats")·of·RFC·6733·are·encoded·as·values·of·the·types |
| 306 | defined·here.·Values·are·passed·to·<a·href="diameter.html#call/4"><code·class="inline">diameter:call/4</code></a>·in·a·request·record·when | 306 | defined·here.·Values·are·passed·to·<a·href="diameter.html#call/4"><code·class="inline">diameter:call/4</code></a>·in·a·request·record·when |
| 307 | sending·a·request,·returned·in·a·resulting·answer·record·and·passed·to·a | 307 | sending·a·request,·returned·in·a·resulting·answer·record·and·passed·to·a |
| 308 | <a·href="diameter_app.html#c:handle_request/3">handle_request/3</a>·callback·upon·reception·of | 308 | <a·href="diameter_app.html#c:handle_request/3">handle_request/3</a>·callback·upon·reception·of |
| 309 | an·incoming·request.</p><p>In·cases·in·which·there·is·a·choice·between·string()·and·binary()·types·for | 309 | an·incoming·request.</p><p>In·cases·in·which·there·is·a·choice·between·string()·and·binary()·types·for |
| 310 | OctetString()·and·derived·types,·the·representation·is·determined·by·the·value | 310 | OctetString()·and·derived·types,·the·representation·is·determined·by·the·value |
| 311 | of·<a·href="diameter.html#service_opt">diameter:service_opt()</a> | 311 | of·<a·href="diameter.html#service_opt">diameter:service_opt()</a> |
| 312 | <a·href="diameter.html#string_decode">string_decode</a>.</p><p><em>Basic·AVP·Data·Formats</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">OctetString</span><span·class="p"·data-group-id=" | 312 | <a·href="diameter.html#string_decode">string_decode</a>.</p><p><em>Basic·AVP·Data·Formats</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">OctetString</span><span·class="p"·data-group-id="1346087105-1">(</span><span·class="p"·data-group-id="1346087105-1">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">string</span><span·class="p"·data-group-id="1346087105-2">(</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·223,·SHA:·9c2044362da84bfe6ef0557d714132ba1c2533d0e755bccac9d396409b788c00·...·]-3">)</span><span·class="w"> |
| 313 | </span><span·class="n">Integer32</span><span·class="p"·data-group-id=" | 313 | </span><span·class="n">Integer32</span><span·class="p"·data-group-id="1346087105-4">(</span><span·class="p"·data-group-id="1346087105-4">)</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="o">-</span><span·class="mi">2147483647</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">2147483647</span><span·class="w"> |
| 314 | </span><span·class="n">Integer64</span><span·class="p"·data-group-id=" | 314 | </span><span·class="n">Integer64</span><span·class="p"·data-group-id="1346087105-5">(</span><span·class="p"·data-group-id="1346087105-5">)</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="o">-</span><span·class="mi">9223372036854775807</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">9223372036854775807</span><span·class="w"> |
| 315 | </span><span·class="n">Unsigned32</span><span·class="p"·data-group-id=" | 315 | </span><span·class="n">Unsigned32</span><span·class="p"·data-group-id="1346087105-6">(</span><span·class="p"·data-group-id="1346087105-6">)</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">4294967295</span><span·class="w"> |
| 316 | </span><span·class="n">Unsigned64</span><span·class="p"·data-group-id=" | 316 | </span><span·class="n">Unsigned64</span><span·class="p"·data-group-id="1346087105-7">(</span><span·class="p"·data-group-id="1346087105-7">)</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">18446744073709551615</span><span·class="w"> |
| 317 | </span><span·class="n">Float32</span><span·class="p"·data-group-id=" | 317 | </span><span·class="n">Float32</span><span·class="p"·data-group-id="1346087105-8">(</span><span·class="p"·data-group-id="1346087105-8">)</span><span·class="w">·····</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">'-infinity'</span><span·class="w">·</span><span·class="p">|</span><span·class="w[·...·truncated·by·diffoscope;·len:·133,·SHA:·31832fbafcaa8fc22386cbd8eb48c277e11f351b6f66597d3d5c9ab489ae6e10·...·]-9">)</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">infinity</span><span·class="w"> |
| 318 | </span><span·class="n">Float64</span><span·class="p"·data-group-id=" | 318 | </span><span·class="n">Float64</span><span·class="p"·data-group-id="1346087105-10">(</span><span·class="p"·data-group-id="1346087105-10">)</span><span·class="w">·····</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">'-infinity'</span><span·class="w">·</span><span·class="p">|</span><span·class=[·...·truncated·by·diffoscope;·len:·136,·SHA:·fe1670a9f047a0832131096ec3b74f5d11625df6f35eaf6f40086967f2208bd5·...·]-11">)</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">infinity</span><span·class="w"> |
| 319 | </span><span·class="n">Grouped</span><span·class="p"·data-group-id=" | 319 | </span><span·class="n">Grouped</span><span·class="p"·data-group-id="1346087105-12">(</span><span·class="p"·data-group-id="1346087105-12">)</span><span·class="w">·····</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">record</span><span·class="p"·data-group-id="1346087105-13">(</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·22,·SHA:·1713b220010db0c11be6551b33180edac36b43ff096cea3f96312f802ca0ff55·...·]-13">)</span></code></pre><p>On·encode,·an·OctetString()·can·be·specified·as·an·iolist(),·excessively·large |
| 320 | floats·(in·absolute·value)·are·equivalent·to·<code·class="inline">infinity</code>·or·<code·class="inline">'-infinity'</code>·and | 320 | floats·(in·absolute·value)·are·equivalent·to·<code·class="inline">infinity</code>·or·<code·class="inline">'-infinity'</code>·and |
| 321 | excessively·large·integers·result·in·encode·failure.·The·records·for·grouped | 321 | excessively·large·integers·result·in·encode·failure.·The·records·for·grouped |
| 322 | AVPs·are·as·discussed·in·the·previous·section.</p><p><em>Derived·AVP·Data·Formats</em></p><p><a·href=""·id="Address"></a></p><pre><code·class="text">Address()·=·OctetString() | 322 | AVPs·are·as·discussed·in·the·previous·section.</p><p><em>Derived·AVP·Data·Formats</em></p><p><a·href=""·id="Address"></a></p><pre><code·class="text">Address()·=·OctetString() |
| 323 | ··········|·tuple()</code></pre><p>On·encode,·an·OctetString()·IPv4·address·is·parsed·in·the·usual·x.x.x.x·format | 323 | ··········|·tuple()</code></pre><p>On·encode,·an·OctetString()·IPv4·address·is·parsed·in·the·usual·x.x.x.x·format |
| 324 | while·an·IPv6·address·is·parsed·in·any·of·the·formats·specified·by·section·2.2 | 324 | while·an·IPv6·address·is·parsed·in·any·of·the·formats·specified·by·section·2.2 |
| 325 | of·RFC·2373,·"Text·Representation·of·Addresses".·An·IPv4·tuple()·has·length·4 | 325 | of·RFC·2373,·"Text·Representation·of·Addresses".·An·IPv4·tuple()·has·length·4 |
| 326 | and·contains·values·of·type·0..255.·An·IPv6·tuple()·has·length·8·and·contains | 326 | and·contains·values·of·type·0..255.·An·IPv6·tuple()·has·length·8·and·contains |
| 327 | values·of·type·0..65535.·The·tuple·representation·is·used·on·decode.</p><p><a·href=""·id="Time"></a></p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Time</span><span·class="p"·data-group-id=" | 327 | values·of·type·0..65535.·The·tuple·representation·is·used·on·decode.</p><p><a·href=""·id="Time"></a></p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Time</span><span·class="p"·data-group-id="2206122420-1">(</span><span·class="p"·data-group-id="2206122420-1">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2206122420-2">{</span><span·class="nf">date</span><span·class="p"·data-group-i[·...·truncated·by·diffoscope;·len:·301,·SHA:·e0a0c9c696b0e322353c4e02fb4ac2649f5d1907ce990ecdda2d5704ce645dae·...·]-2">}</span><span·class="w"> |
| 328 | </span><span·class="ss">where</span><span·class="w"> | 328 | </span><span·class="ss">where</span><span·class="w"> |
| 329 | ··</span><span·class="nf">date</span><span·class="p"·data-group-id=" | 329 | ··</span><span·class="nf">date</span><span·class="p"·data-group-id="2206122420-5">(</span><span·class="p"·data-group-id="2206122420-5">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2206122420-6">{</span><span·class="n">Year</span><span·class="p">,</span><span[·...·truncated·by·diffoscope;·len:·162,·SHA:·37a204d70bbe52d5c30fd94101b919da859964dd8ccc2789ceb7b21fe258d7b5·...·]-6">}</span><span·class="w"> |
| 330 | ··</span><span·class="nf">time</span><span·class="p"·data-group-id=" | 330 | ··</span><span·class="nf">time</span><span·class="p"·data-group-id="2206122420-7">(</span><span·class="p"·data-group-id="2206122420-7">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2206122420-8">{</span><span·class="n">Hour</span><span·class="p">,</span><span[·...·truncated·by·diffoscope;·len:·166,·SHA:·bba190a764b55cb333a906d31b9aa093721b00b8af3356da2252e934fd26eb6f·...·]-8">}</span><span·class="w"> |
| 331 | ··</span><span·class="n">Year</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id=" | 331 | ··</span><span·class="n">Year</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="2206122420-9">(</span><span·class="p"·data-group-id="2206122420-9">)</span><span·class="w"> |
| 332 | ··</span><span·class="n">Month</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">12</span><span·class="w"> | 332 | ··</span><span·class="n">Month</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">12</span><span·class="w"> |
| 333 | ··</span><span·class="n">Day</span><span·class="w">····</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">31</span><span·class="w"> | 333 | ··</span><span·class="n">Day</span><span·class="w">····</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">31</span><span·class="w"> |
| 334 | ··</span><span·class="n">Hour</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">23</span><span·class="w"> | 334 | ··</span><span·class="n">Hour</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">23</span><span·class="w"> |
| 335 | ··</span><span·class="n">Minute</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">59</span><span·class="w"> | 335 | ··</span><span·class="n">Minute</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">59</span><span·class="w"> |
| 336 | ··</span><span·class="n">Second</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">59</span></code></pre><p>Additionally,·values·that·can·be·encoded·are·limited·by·way·of·their·encoding·as | 336 | ··</span><span·class="n">Second</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">59</span></code></pre><p>Additionally,·values·that·can·be·encoded·are·limited·by·way·of·their·encoding·as |
| 337 | four·octets·as·required·by·RFC·6733·with·the·required·extension·from·RFC·2030. | 337 | four·octets·as·required·by·RFC·6733·with·the·required·extension·from·RFC·2030. |
| 338 | In·particular,·only·values·between·<code·class="inline">{{1968,1,20},{3,14,8}}</code>·and | 338 | In·particular,·only·values·between·<code·class="inline">{{1968,1,20},{3,14,8}}</code>·and |
| Offset 355, 16 lines modified | Offset 355, 16 lines modified | ||
| 355 | ··FQDN·=·OctetString() | 355 | ··FQDN·=·OctetString() |
| 356 | ··Port·=·integer() | 356 | ··Port·=·integer() |
| 357 | ··Transport·=·sctp·|·tcp | 357 | ··Transport·=·sctp·|·tcp |
| 358 | ··Protocol··=·diameter·|·radius·|·'tacacs+'</code></pre><p>On·encode,·fields·port,·transport·and·protocol·default·to·3868,·sctp·and | 358 | ··Protocol··=·diameter·|·radius·|·'tacacs+'</code></pre><p>On·encode,·fields·port,·transport·and·protocol·default·to·3868,·sctp·and |
| 359 | diameter·respectively.·The·grammar·of·an·OctetString-valued·DiameterURI()·is·as | 359 | diameter·respectively.·The·grammar·of·an·OctetString-valued·DiameterURI()·is·as |
| 360 | specified·in·section·4.3·of·RFC·6733.·The·record·representation·is·used·on | 360 | specified·in·section·4.3·of·RFC·6733.·The·record·representation·is·used·on |
| 361 | decode.</p><p><a·href=""·id="Enumerated"></a></p><pre><code·class="text">Enumerated()·=·Integer32()</code></pre><p>On·encode,·values·can·be·specified·using·the·macros·defined·in·a·dictionary's | 361 | decode.</p><p><a·href=""·id="Enumerated"></a></p><pre><code·class="text">Enumerated()·=·Integer32()</code></pre><p>On·encode,·values·can·be·specified·using·the·macros·defined·in·a·dictionary's |
| 362 | hrl·file.</p><p><a·href=""·id="IPFilterRule"></a>·<a·href=""·id="QoSFilterRule"></a></p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">IPFilterRule</span><span·class="p"·data-group-id="6973288491-1">(</span><span·class="p"·data-group-id="6973288491-1">)</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="n">OctetString</span><span·class="p"·data-group-id="6973288491-2">(</span><span·class="p"·data-group-id="6973288491-2">)</span><span·class="w"> | ||
| 363 | 362 | hrl·file.</p><p><a·href=""·id="IPFilterRule"></a>·<a·href=""·id="QoSFilterRule"></a></p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">IPFilterRule</span><span·class="p"·data-group-id="0900337812-1">(</span><span·class="p"·data-group-id="0[·...·truncated·by·diffoscope;·len:·248,·SHA:·709e5ebcdebf592f36587d88c82e9f6016aae3a425d2493ca9df4d5c8bbbb328·...·]"> | |
| 363 | </span><span·class="n">QoSFilterRule</span><span·class="p"·data-group-id="0900337812-3">(</span><span·class="p"·data-group-id="0900337812-3">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">OctetString</span><span·class="p"·data-group-id="0900337812-4">(</span><span·class="p"·data-group-id="0900337812-4">)</span></code></pre><p>Values·of·these·types·are·not·currently·parsed·by·diameter.</p><h2·id="see-also"·class="section-heading"> | ||
| 364 | ··<a·href="#see-also"·class="hover-link"> | 364 | ··<a·href="#see-also"·class="hover-link"> |
| 365 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 365 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 366 | ··</a> | 366 | ··</a> |
| 367 | ··<span·class="text">SEE·ALSO</span> | 367 | ··<span·class="text">SEE·ALSO</span> |
| 368 | </h2> | 368 | </h2> |
| 369 | <p><a·href="diameterc_cmd.html">diameterc(1)</a>,·<a·href="diameter.html"><code·class="inline">diameter</code></a>,·<a·href="diameter_app.html"><code·class="inline">diameter_app</code></a>, | 369 | <p><a·href="diameterc_cmd.html">diameterc(1)</a>,·<a·href="diameter.html"><code·class="inline">diameter</code></a>,·<a·href="diameter_app.html"><code·class="inline">diameter_app</code></a>, |
| 370 | <a·href="diameter_codec.html"><code·class="inline">diameter_codec</code></a>,·<a·href="diameter_make.html"><code·class="inline">diameter_make</code></a></p> | 370 | <a·href="diameter_codec.html"><code·class="inline">diameter_codec</code></a>,·<a·href="diameter_make.html"><code·class="inline">diameter_make</code></a></p> |
| Offset 127, 15 lines modified | Offset 127, 15 lines modified | ||
| 127 | <p>Compile·a·diameter·dictionary·to·Erlang·source.</p><h2·id="synopsis"·class="section-heading"> | 127 | <p>Compile·a·diameter·dictionary·to·Erlang·source.</p><h2·id="synopsis"·class="section-heading"> |
| 128 | ··<a·href="#synopsis"·class="hover-link"> | 128 | ··<a·href="#synopsis"·class="hover-link"> |
| 129 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 129 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 130 | ··</a> | 130 | ··</a> |
| 131 | ··<span·class="text">Synopsis</span> | 131 | ··<span·class="text">Synopsis</span> |
| 132 | </h2> | 132 | </h2> |
| 133 | <pre><code·class="makeup·erlang"·translate="no"><span·class="ss">diameterc</span><span·class="w">·</span><span·class="p"·data-group-id=" | 133 | <pre><code·class="makeup·erlang"·translate="no"><span·class="ss">diameterc</span><span·class="w">·</span><span·class="p"·data-group-id="7042349201-1">[</span><span·class="o"><</span><span·class="ss">options</span><span·class="o">></span><span·class="p"·data-group-id="7042349201-1">]</span><span·class="w">·</span><span·class="o"><</span><span·class="ss">file</span><span·class="o">></span></code></pre><h2·id="description"·class="section-heading"> |
| 134 | ··<a·href="#description"·class="hover-link"> | 134 | ··<a·href="#description"·class="hover-link"> |
| 135 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 135 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 136 | ··</a> | 136 | ··</a> |
| 137 | ··<span·class="text">Description</span> | 137 | ··<span·class="text">Description</span> |
| 138 | </h2> | 138 | </h2> |
| 139 | <p>The·diameterc·utility·is·used·to·compile·a·diameter | 139 | <p>The·diameterc·utility·is·used·to·compile·a·diameter |
| 140 | <a·href="diameter_dict.html">dictionary·file</a>·into·Erlang·source.·The·resulting·source | 140 | <a·href="diameter_dict.html">dictionary·file</a>·into·Erlang·source.·The·resulting·source |
| Offset 124, 16 lines modified | Offset 124, 16 lines modified | ||
| 124 | ····<span·translate="no">edoc_doclet_markdown</span>· | 124 | ····<span·translate="no">edoc_doclet_markdown</span>· |
| 125 | ····<small·class="app-vsn"·translate="no">(edoc·v1.3.2)</small> | 125 | ····<small·class="app-vsn"·translate="no">(edoc·v1.3.2)</small> |
| 126 | ··</h1> | 126 | ··</h1> |
| 127 | ····<section·id="moduledoc"> | 127 | ····<section·id="moduledoc"> |
| 128 | <p>Doclet·converting·an·edoc·application·to·use·<a·href="https://www.erlang.org/eeps/eep-0059">EEP-59</a>·and·Markdown.</p><p>This·doclet·has·to·be·used·together·with·<a·href="edoc_layout_chunks.html"><code>edoc_layout_chunks</code></a>.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">1</span><span·class="o">></span><span·class="w">·</span><span·class="nc">edoc</span><span·class="p">:</span><span·class="nf">application</span><span·class="p"·data-group-id="0115371721-1">(</span><span·class="ss">example</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0115371721-2">[</span><span·class="p"·data-group-id="0115371721-3">{</span><span·class="ss">preprocess</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">true</span><span·class="p"·data-group-id="0115371721-3">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0115371721-4">{</span><span·class="ss">doclet</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">edoc_doclet_markdown</span><span·class="p"·data-group-id="0115371721-4">}</span><span·class="p">,</span><span·class="w"> | ||
| 129 | 128 | <p>Doclet·converting·an·edoc·application·to·use·<a·href="https://www.erlang.org/eeps/eep-0059">EEP-59</a>·and·Markdown.</p><p>This·doclet·has·to·be·used·together·with·<a·href="edoc_layout_chunks.html"><code>edoc_layout_chunks</code></a>.</p><p>Example:</p>[·...·truncated·by·diffoscope;·len:·951,·SHA:·288612086c828395347472abb904b70b76cf70913ad2d2ad743db861632889a4·...·]> | |
| 129 | ·······</span><span·class="p"·data-group-id="3260786765-5">{</span><span·class="ss">layout</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">edoc_layout_chunks</span><span·class="p"·data-group-id="3260786765-5">}</span><span·class="p"·data-group-id="3260786765-2">]</span><span·class="p"·data-group-id="3260786765-1">)</span><span·class="p">.</span></code></pre><p>It·will·convert·the·overview·to·Markdown·and·any·module·documentation·to·use·<code>-doc</code>·attributes·and·Markdown.·Any·XHTML·tags·in·the·edoc·documentation·that·are·not·part·of·the·tags·supported·by·<a·href="doc_storage.html#erlang-documentation-format">Erlang·Documentation·Format</a>·will·be·added·as·HTML·tags·in·the·Markdown.</p><p>It·does·not·delete·the·old·edoc·documentation.</p><p><em>See·also:·</em><a·href="edoc_layout_chunks.html">edoc_layout_chunks</a>.</p> | ||
| 130 | ····</section> | 130 | ····</section> |
| 131 | </div> | 131 | </div> |
| 132 | ··<section·id="summary"·class="details-list"> | 132 | ··<section·id="summary"·class="details-list"> |
| 133 | ····<h1·class="section-heading"> | 133 | ····<h1·class="section-heading"> |
| 134 | ······<a·class="hover-link"·href="#summary"> | 134 | ······<a·class="hover-link"·href="#summary"> |
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| 1 | Zip·file·size:·33098·bytes,·number·of·entries:·11 | 1 | Zip·file·size:·33098·bytes,·number·of·entries:·11 |
| 2 | ?rw-r--r--··6.1·unx·······20·bx·stor·25-Mar-18·0 | 2 | ?rw-r--r--··6.1·unx·······20·bx·stor·25-Mar-18·08:51·mimetype |
| 3 | ?rw-r--r--··6.1·unx······716·bx·defN·25-Mar-18·0 | 3 | ?rw-r--r--··6.1·unx······716·bx·defN·25-Mar-18·08:51·OEBPS/title.xhtml |
| 4 | ?rw-r--r--··6.1·unx····19167·bx·defN·25-Mar-18·0 | 4 | ?rw-r--r--··6.1·unx····19167·bx·defN·25-Mar-18·08:51·OEBPS/notes.xhtml |
| 5 | ?rw-r--r--··6.1·unx······936·bx·defN·25-Mar-18·0 | 5 | ?rw-r--r--··6.1·unx······936·bx·defN·25-Mar-18·08:51·OEBPS/nav.xhtml |
| 6 | ?rw-r--r--··6.1·unx····88626·bx·defN·25-Mar-18·0 | 6 | ?rw-r--r--··6.1·unx····88626·bx·defN·25-Mar-18·08:51·OEBPS/eldap.xhtml |
| 7 | ?rw-r--r--··6.1·unx····14562·bx·defN·25-Mar-18·0 | 7 | ?rw-r--r--··6.1·unx····14562·bx·defN·25-Mar-18·08:51·OEBPS/dist/epub-erlang-ESPT6BQV.css |
| 8 | ?rw-r--r--··6.1·unx······499·bx·defN·25-Mar-18·0 | 8 | ?rw-r--r--··6.1·unx······499·bx·defN·25-Mar-18·08:51·OEBPS/dist/epub-LSJCIYTM.js |
| 9 | ?rw-r--r--··6.1·unx·····1323·bx·defN·25-Mar-18·0 | 9 | ?rw-r--r--··6.1·unx·····1323·bx·defN·25-Mar-18·08:51·OEBPS/content.opf |
| 10 | ?rw-r--r--··6.1·unx·····5837·bx·defN·25-Mar-18·0 | 10 | ?rw-r--r--··6.1·unx·····5837·bx·defN·25-Mar-18·08:51·OEBPS/assets/logo.png |
| 11 | ?rw-r--r--··6.1·unx······252·bx·defN·25-Mar-18·0 | 11 | ?rw-r--r--··6.1·unx······252·bx·defN·25-Mar-18·08:51·META-INF/container.xml |
| 12 | ?rw-r--r--··6.1·unx······162·bx·defN·25-Mar-18·0 | 12 | ?rw-r--r--··6.1·unx······162·bx·defN·25-Mar-18·08:51·META-INF/com.apple.ibooks.display-options.xml |
| 13 | 11·files,·132100·bytes·uncompressed,·31186·bytes·compressed:··76.4% | 13 | 11·files,·132100·bytes·uncompressed,·31186·bytes·compressed:··76.4% |
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| 1 | Zip·archive·data,·made·by·v6.1·UNIX,·extract·using·at·least·v1.0,·last·modified,·last·modified·Sun,·Mar·18·2025·0 | 1 | Zip·archive·data,·made·by·v6.1·UNIX,·extract·using·at·least·v1.0,·last·modified,·last·modified·Sun,·Mar·18·2025·08:51:50,·uncompressed·size·20,·method=store |
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| 1 | <?xml·version="1.0"·encoding="utf-8"?> | 1 | <?xml·version="1.0"·encoding="utf-8"?> |
| 2 | <package·xmlns="http://www.idpf.org/2007/opf"·unique-identifier="project-eldap"·version="3.0"> | 2 | <package·xmlns="http://www.idpf.org/2007/opf"·unique-identifier="project-eldap"·version="3.0"> |
| 3 | ··<metadata·xmlns:dc="http://purl.org/dc/elements/1.1/"> | 3 | ··<metadata·xmlns:dc="http://purl.org/dc/elements/1.1/"> |
| 4 | ····<dc:title>eldap·-·1.2.14</dc:title> | 4 | ····<dc:title>eldap·-·1.2.14</dc:title> |
| 5 | ····<dc:identifier·id="project-eldap">urn:uuid: | 5 | ····<dc:identifier·id="project-eldap">urn:uuid:3846bb89-05ce-e8a4-8add-18f58959c06c</dc:identifier> |
| 6 | ····<dc:language>en</dc:language> | 6 | ····<dc:language>en</dc:language> |
| 7 | ····<meta·property="dcterms:modified">2025-03-18T0 | 7 | ····<meta·property="dcterms:modified">2025-03-18T08:51:50Z</meta> |
| 8 | ··</metadata> | 8 | ··</metadata> |
| 9 | ··<manifest> | 9 | ··<manifest> |
| 10 | ····<item·id="nav"·href="nav.xhtml"·media-type="application/xhtml+xml"·properties="nav·scripted"/> | 10 | ····<item·id="nav"·href="nav.xhtml"·media-type="application/xhtml+xml"·properties="nav·scripted"/> |
| 11 | ····<item·id="cover"·href="title.xhtml"·media-type="application/xhtml+xml"·properties="scripted"/> | 11 | ····<item·id="cover"·href="title.xhtml"·media-type="application/xhtml+xml"·properties="scripted"/> |
| 12 | ····<item·id="notes"·href="notes.xhtml"·media-type="application/xhtml+xml"·properties="scripted"/> | 12 | ····<item·id="notes"·href="notes.xhtml"·media-type="application/xhtml+xml"·properties="scripted"/> |
| 13 | ····<item·id="eldap"·href="eldap.xhtml"·media-type="application/xhtml+xml"·properties="scripted"/> | 13 | ····<item·id="eldap"·href="eldap.xhtml"·media-type="application/xhtml+xml"·properties="scripted"/> |
| 14 | ····<item·id="epub-lsjciytm-js"·href="dist/epub-LSJCIYTM.js"·media-type="text/javascript"/> | 14 | ····<item·id="epub-lsjciytm-js"·href="dist/epub-LSJCIYTM.js"·media-type="text/javascript"/> |
| Offset 951, 21 lines modified | Offset 951, 21 lines modified | ||
| 951 | ·················Dn·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>(), | 951 | ·················Dn·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>(), |
| 952 | ·················Attributes·::·[<a·href="#t:attribute/0">attribute</a>()], | 952 | ·················Attributes·::·[<a·href="#t:attribute/0">attribute</a>()], |
| 953 | ·················Refs·::·{referral,·<a·href="#t:referrals/0">referrals</a>()}, | 953 | ·················Refs·::·{referral,·<a·href="#t:referrals/0">referrals</a>()}, |
| 954 | ·················Reason·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> | 954 | ·················Reason·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 955 | ······</div> | 955 | ······</div> |
| 956 | <p>Add·an·entry.·The·entry·must·not·exist.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··</span><span·class="nf">add</span><span·class="p"·data-group-id="8 | 956 | <p>Add·an·entry.·The·entry·must·not·exist.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··</span><span·class="nf">add</span><span·class="p"·data-group-id="8785861284-1">(</span><span·class="n">Handle</span><span·class="p">,</span><span·class="w"> |
| 957 | ······</span><span·class="s">"cn=Bill·Valentine,·ou=people,·o=Example·Org,·dc=example,·dc=com"</span><span·class="p">,</span><span·class="w"> | 957 | ······</span><span·class="s">"cn=Bill·Valentine,·ou=people,·o=Example·Org,·dc=example,·dc=com"</span><span·class="p">,</span><span·class="w"> |
| 958 | ·······</span><span·class="p"·data-group-id="8 | 958 | ·······</span><span·class="p"·data-group-id="8785861284-2">[</span><span·class="p"·data-group-id="8785861284-3">{</span><span·class="s">"objectclass"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8785861284-4">[</span><span·class="s">"person"<[·...·truncated·by·diffoscope;·len:·98,·SHA:·257abf751001ab2c4aa4e0695586f15aff2033a93d12c16dadcbc3616227233e·...·]84-3">}</span><span·class="p">,</span><span·class="w"> |
| 959 | ········</span><span·class="p"·data-group-id="8 | 959 | ········</span><span·class="p"·data-group-id="8785861284-5">{</span><span·class="s">"cn"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8785861284-6">[</span><span·class="s">"Bill·Valentine"</span><span·class="p"·data-group-id="8785861284-6">]</[·...·truncated·by·diffoscope;·len:·44,·SHA:·f88aacfcddf51918e133ac7c131ba1be8aa97b84e9cad775505e2b9c69603406·...·]84-5">}</span><span·class="p">,</span><span·class="w"> |
| 960 | ········</span><span·class="p"·data-group-id="8 | 960 | ········</span><span·class="p"·data-group-id="8785861284-7">{</span><span·class="s">"sn"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8785861284-8">[</span><span·class="s">"Valentine"</span><span·class="p"·data-group-id="8785861284-8">]</span>[·...·truncated·by·diffoscope;·len:·39,·SHA:·9e6f5479ca9c211ccf63179bdf28856f228d272372536f844263a63e3463f350·...·]84-7">}</span><span·class="p">,</span><span·class="w"> |
| 961 | ········</span><span·class="p"·data-group-id="8 | 961 | ········</span><span·class="p"·data-group-id="8785861284-9">{</span><span·class="s">"telephoneNumber"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8785861284-10">[</span><span·class="s">"545·555·00"</span><span·class="p"·data-group-id="8785861[·...·truncated·by·diffoscope;·len:·108,·SHA:·9763deac32b7e38b46d50502f229211e852e8ec8ead4e9a9be57c690da4b4759·...·]84-2">]</span><span·class="w"> |
| 962 | ·····</span><span·class="p"·data-group-id="8 | 962 | ·····</span><span·class="p"·data-group-id="8785861284-1">)</span></code></pre> |
| 963 | ··</section> | 963 | ··</section> |
| 964 | </section> | 964 | </section> |
| 965 | <section·class="detail"·id="and/1"> | 965 | <section·class="detail"·id="and/1"> |
| 966 | ··<div·class="detail-header"> | 966 | ··<div·class="detail-header"> |
| 967 | ····<a·href="#and/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 967 | ····<a·href="#and/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 968 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 968 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 1249, 15 lines modified | Offset 1249, 15 lines modified | ||
| 1249 | ·····························OptionalAttrs·:: | 1249 | ·····························OptionalAttrs·:: |
| 1250 | ·································[{matchingRule,·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>()}·| | 1250 | ·································[{matchingRule,·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>()}·| |
| 1251 | ··································{type,·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>()}·| | 1251 | ··································{type,·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>()}·| |
| 1252 | ··································{dnAttributes,·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:boolean/0">boolean</a>()}].</pre> | 1252 | ··································{dnAttributes,·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:boolean/0">boolean</a>()}].</pre> |
| 1253 | ······</div> | 1253 | ······</div> |
| 1254 | <p>Creates·an·extensible·match·filter.·For·example,</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··</span><span·class="nc">eldap</span><span·class="p">:</span><span·class="nf">extensibleMatch</span><span·class="p"·data-group-id="2 | 1254 | <p>Creates·an·extensible·match·filter.·For·example,</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··</span><span·class="nc">eldap</span><span·class="p">:</span><span·class="nf">extensibleMatch</span><span·class="p"·data-group-id="6203743717-1">(</span><span·class="s">"Bar"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6203743717-2">[</span><span·class="p"·data-group-id="6203743717-3">{</span><span·class="ss">type</span><span·class="p[·...·truncated·by·diffoscope;·len:·457,·SHA:·b130075337bad5cf44e261a6412c1d596cc3530783a63c3c259af377d7a86439·...·]-1">)</span><span·class="p">)</span></code></pre><p>creates·a·filter·which·performs·a·<code·class="inline">caseExactMatch</code>·on·the·attribute·<code·class="inline">sn</code>·and |
| 1255 | matches·with·the·value·<code·class="inline">"Bar"</code>.·The·default·value·of·<code·class="inline">dnAttributes</code>·is·<code·class="inline">false</code>.</p> | 1255 | matches·with·the·value·<code·class="inline">"Bar"</code>.·The·default·value·of·<code·class="inline">dnAttributes</code>·is·<code·class="inline">false</code>.</p> |
| 1256 | ··</section> | 1256 | ··</section> |
| 1257 | </section> | 1257 | </section> |
| 1258 | <section·class="detail"·id="greaterOrEqual/2"> | 1258 | <section·class="detail"·id="greaterOrEqual/2"> |
| 1259 | ··<div·class="detail-header"> | 1259 | ··<div·class="detail-header"> |
| 1260 | ····<a·href="#greaterOrEqual/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1260 | ····<a·href="#greaterOrEqual/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 1453, 17 lines modified | Offset 1453, 17 lines modified | ||
| 1453 | ····················Dn·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>(), | 1453 | ····················Dn·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>(), |
| 1454 | ····················ModifyOps·::·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>()], | 1454 | ····················ModifyOps·::·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>()], |
| 1455 | ····················Refs·::·{referral,·<a·href="#t:referrals/0">referrals</a>()}, | 1455 | ····················Refs·::·{referral,·<a·href="#t:referrals/0">referrals</a>()}, |
| 1456 | ····················Reason·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> | 1456 | ····················Reason·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 1457 | ······</div> | 1457 | ······</div> |
| 1458 | <p>Modify·an·entry.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··</span><span·class="nf">modify</span><span·class="p"·data-group-id=" | 1458 | <p>Modify·an·entry.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··</span><span·class="nf">modify</span><span·class="p"·data-group-id="6353089327-1">(</span><span·class="n">Handle</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"cn=Bill·Valentine,·ou=people,·o=Example·Org,·dc=example,·dc=com"</span><span·class="p">,</span><span·class="w"> |
| 1459 | ·········</span><span·class="p"·data-group-id="3127449043-2">[</span><span·class="nc">eldap</span><span·class="p">:</span><span·class="nf">mod_replace</span><span·class="p"·data-group-id="3127449043-3">(</span><span·class="s">"telephoneNumber"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3127449043-4">[</span><span·class="s">"555·555·00"</span><span·class="p"·data-group-id="3127449043-4">]</span><span·class="p"·data-group-id="3127449043-3">)</span><span·class="p">,</span><span·class="w"> | ||
| 1460 | 1459 | ·········</span><span·class="p"·data-group-id="6353089327-2">[</span><span·class="nc">eldap</span><span·class="p">:</span><span·class="nf">mod_replace</span><span·class="p"·data-group-id="6353089327-3">(</span><span·class="s">"telephoneNumber"</s[·...·truncated·by·diffoscope;·len:·295,·SHA:·07473d3cf830e30005e8315b2eee5a94c0633d2073f1e38e5831645a6a6b14ec·...·]> | |
| 1460 | » ··</span><span·class="nc">eldap</span><span·class="p">:</span><span·class="nf">mod_add</span><span·class="p"·data-group-id="6353089327-5">(</span><span·class="s">"description"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6353089327-6">[</span><span·class="s">"LDAP·Hacker"</span><span·class="p"·data-group-id="6353089327-6">]</span><span·class="p"·data-group-id="6353089327-5">)</span><span·class="w">·</span><span·class="p"·data-group-id="6353089327-2">]</span><span·class="p"·data-group-id="6353089327-1">)</span></code></pre> | ||
| 1461 | ··</section> | 1461 | ··</section> |
| 1462 | </section> | 1462 | </section> |
| 1463 | <section·class="detail"·id="modify_dn/5"> | 1463 | <section·class="detail"·id="modify_dn/5"> |
| 1464 | ··<div·class="detail-header"> | 1464 | ··<div·class="detail-header"> |
| 1465 | ····<a·href="#modify_dn/5"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1465 | ····<a·href="#modify_dn/5"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1466 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1466 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 1757, 16 lines modified | Offset 1757, 16 lines modified | ||
| 1757 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·paged_result_control(PageSize)·->·{control,·ControlOID,·true,·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>()} | 1757 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·paged_result_control(PageSize)·->·{control,·ControlOID,·true,·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>()} |
| 1758 | ······························when·PageSize·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:integer/0">integer</a>(),·ControlOID·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>().</pre> | 1758 | ······························when·PageSize·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:integer/0">integer</a>(),·ControlOID·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>().</pre> |
| 1759 | ······</div> | 1759 | ······</div> |
| 1760 | <p>Paged·results·is·an·extension·to·the·LDAP·protocol·specified·by·RFC2696</p><p>This·function·creates·a·control·with·the·specified·page·size·for·use·in | 1760 | <p>Paged·results·is·an·extension·to·the·LDAP·protocol·specified·by·RFC2696</p><p>This·function·creates·a·control·with·the·specified·page·size·for·use·in |
| 1761 | <code·class="inline">search/3</code>,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Control</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">eldap</span><span·class="p">:</span><span·class="nf">paged_result_control</span><span·class="p"·data-group-id=" | 1761 | <code·class="inline">search/3</code>,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Control</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">eldap</span><span·class="p">:</span><span·class="nf">paged_result_control</span><span·class="p"·data-group-id="8896554568-1">(</span><span·class="mi">50</span><span·class="p"·data-group-id="8896554568-1">)</span><span·class="p">,</span><span·class="w"> |
| 1762 | </span><span·class="p"·data-group-id=" | 1762 | </span><span·class="p"·data-group-id="8896554568-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">SearchResults</span><span·class="p"·data-group-id="8896554568-2">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span[·...·truncated·by·diffoscope;·len:·727,·SHA:·b819817014d5a70ae69f51de7a09fd279a914793d2a431ac0a57b524d94c97c8·...·]-3">)</span><span·class="p">,</span></code></pre> |
| 1763 | ··</section> | 1763 | ··</section> |
| 1764 | </section> | 1764 | </section> |
| 1765 | <section·class="detail"·id="paged_result_control/2"> | 1765 | <section·class="detail"·id="paged_result_control/2"> |
| 1766 | ··<div·class="detail-header"> | 1766 | ··<div·class="detail-header"> |
| 1767 | ····<a·href="#paged_result_control/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1767 | ····<a·href="#paged_result_control/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1768 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1768 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 1789, 20 lines modified | Offset 1789, 20 lines modified | ||
| 1789 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·paged_result_control(PageSize,·Cookie)·->·{control,·ControlOID,·true,·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>()} | 1789 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·paged_result_control(PageSize,·Cookie)·->·{control,·ControlOID,·true,·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>()} |
| 1790 | ······························when·PageSize·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:integer/0">integer</a>(),·Cookie·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>(),·ControlOID·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>().</pre> | 1790 | ······························when·PageSize·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:integer/0">integer</a>(),·Cookie·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>(),·ControlOID·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>().</pre> |
| 1791 | ······</div> | 1791 | ······</div> |
| 1792 | <p>Paged·results·is·an·extension·to·the·LDAP·protocol·specified·by·RFC2696</p><p>This·function·creates·a·control·with·the·specified·page·size·and·cookie·for·use | 1792 | <p>Paged·results·is·an·extension·to·the·LDAP·protocol·specified·by·RFC2696</p><p>This·function·creates·a·control·with·the·specified·page·size·and·cookie·for·use |
| 1793 | in·<code·class="inline">search/3</code>·to·retrieve·the·next·results·page.</p><p>For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">PageSize</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">50</span><span·class="p">,</span><span·class="w"> | 1793 | in·<code·class="inline">search/3</code>·to·retrieve·the·next·results·page.</p><p>For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">PageSize</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">50</span><span·class="p">,</span><span·class="w"> |
| 1794 | </span><span·class="n">Control1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">eldap</span><span·class="p">:</span><span·class="nf">paged_result_control</span><span·class="p"·data-group-id=" | 1794 | </span><span·class="n">Control1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">eldap</span><span·class="p">:</span><span·class="nf">paged_result_control</span><span·class="p"·data-group-id="2009492717-1">(</span><span·class="n">PageSize</span><span·class="p"·data-group-id="2009492717-1">)</span><span·class="p">,</span><span·class="w"> |
| 1795 | </span><span·class="p"·data-group-id=" | 1795 | </span><span·class="p"·data-group-id="2009492717-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">SearchResults1</span><span·class="p"·data-group-id="2009492717-2">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</spa[·...·truncated·by·diffoscope;·len:·729,·SHA:·a418048f630eaba4c0a1a36d1cd5d651b14956a2492f74ab348ec62c807af964·...·]-3">)</span><span·class="p">,</span><span·class="w"> |
| 1796 | </span><span·class="c1">%%·retrieve·the·returned·cookie·from·the·search·results</span><span·class="w"> | 1796 | </span><span·class="c1">%%·retrieve·the·returned·cookie·from·the·search·results</span><span·class="w"> |
| 1797 | </span><span·class="p"·data-group-id=" | 1797 | </span><span·class="p"·data-group-id="2009492717-7">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cookie1</span><span·class="p"·data-group-id="2009492717-7">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span[·...·truncated·by·diffoscope;·len:·222,·SHA:·474a5221733ddee2b5969a8e20e5f0d0e5a7bdee4cb5e08e120d8a251a15b9b3·...·]-8">)</span><span·class="p">,</span><span·class="w"> |
| 1798 | </span><span·class="n">Control2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">eldap</span><span·class="p">:</span><span·class="nf">paged_result_control</span><span·class="p"·data-group-id=" | 1798 | </span><span·class="n">Control2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">eldap</span><span·class="p">:</span><span·class="nf">paged_result_control</span><span·class="p"·data-group-id="2009492717-9">(</span><span·class="n">PageSize</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cookie1</span><span·class="p"·data-group-id="2009492717-9">)</span><span·class="p">,</span><span·class="w"> |
| 1799 | </span><span·class="p"·data-group-id=" | 1799 | </span><span·class="p"·data-group-id="2009492717-10">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">SearchResults2</span><span·class="p"·data-group-id="2009492717-10">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</s[·...·truncated·by·diffoscope;·len:·790,·SHA:·de81cda5b9b06c95208391e7a461d7c6f20651bda56d2e44ab5960eeb6936bdd·...·]-11">)</span><span·class="p">,</span><span·class="w"> |
| 1800 | </span><span·class="c1">%%·etc</span></code></pre> | 1800 | </span><span·class="c1">%%·etc</span></code></pre> |
| 1801 | ··</section> | 1801 | ··</section> |
| 1802 | </section> | 1802 | </section> |
| 1803 | <section·class="detail"·id="paged_result_cookie/1"> | 1803 | <section·class="detail"·id="paged_result_cookie/1"> |
| 1804 | ··<div·class="detail-header"> | 1804 | ··<div·class="detail-header"> |
| 1805 | ····<a·href="#paged_result_cookie/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1805 | ····<a·href="#paged_result_cookie/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 1908, 16 lines modified | Offset 1908, 16 lines modified | ||
| 1908 | ····················Refs·::·{referral,·<a·href="#t:referrals/0">referrals</a>()}, | 1908 | ····················Refs·::·{referral,·<a·href="#t:referrals/0">referrals</a>()}, |
| 1909 | ····················Reason·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> | 1909 | ····················Reason·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 1910 | ······</div> | 1910 | ······</div> |
| 1911 | <p>Search·the·directory·with·the·supplied·the·SearchOptions.</p><p>The·base·and·filter | 1911 | <p>Search·the·directory·with·the·supplied·the·SearchOptions.</p><p>The·base·and·filter |
| 1912 | options·must·be·supplied.·Default·values:·scope·is·<a·href="#wholeSubtree/0"><code·class="inline">wholeSubtree/0</code></a>,·deref·is | 1912 | options·must·be·supplied.·Default·values:·scope·is·<a·href="#wholeSubtree/0"><code·class="inline">wholeSubtree/0</code></a>,·deref·is |
| 1913 | <a·href="#derefAlways/0"><code·class="inline">derefAlways/0</code></a>,·types_only·is·<code·class="inline">false</code>·and·timeout·is·<code·class="inline">0</code>·(meaning·infinity).</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··</span><span·class="n">Filter</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">eldap</span><span·class="p">:</span><span·class="nf">substrings</span><span·class="p"·data-group-id=" | 1913 | <a·href="#derefAlways/0"><code·class="inline">derefAlways/0</code></a>,·types_only·is·<code·class="inline">false</code>·and·timeout·is·<code·class="inline">0</code>·(meaning·infinity).</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··</span><span·class="n">Filter</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">eldap</span><span·class="p">:</span><span·class="nf">substrings</span><span·class="p"·data-group-id="0001313804-1">(</span><span·class="s">"cn"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0001313804-2">[</span><span·class="p"·data-group-id="0001313804-3">{</span><span·class="ss">any</span><span·class="p">[·...·truncated·by·diffoscope;·len:·191,·SHA:·58cf38391dc37098ba5a56b32a31dbde222c12f95a965d5d19540749efd6f682·...·]-1">)</span><span·class="p">,</span><span·class="w"> |
| 1914 | ··</span><span·class="nf">search</span><span·class="p"·data-group-id=" | 1914 | ··</span><span·class="nf">search</span><span·class="p"·data-group-id="0001313804-4">(</span><span·class="n">Handle</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0001313804-5">[</span><span·class="p"·data-group-id="0001313804-6">{</span><span·class="ss">base</span><span·class="p">,</span[·...·truncated·by·diffoscope;·len:·865,·SHA:·df6763d8756d79e16785fd432a4a8a5fb7e4ae99519d09ccd8a4e076bbb0f142·...·]-4">)</span><span·class="p">,</span></code></pre><p>The·<code·class="inline">timeout</code>·option·in·the·<code·class="inline">SearchOptions</code>·is·for·the·ldap·server,·while·the |
| 1915 | timeout·in·<a·href="#open/2">eldap:open/2</a>·is·used·for·each·individual·request·in·the | 1915 | timeout·in·<a·href="#open/2">eldap:open/2</a>·is·used·for·each·individual·request·in·the |
| 1916 | search·operation.</p> | 1916 | search·operation.</p> |
| 1917 | ··</section> | 1917 | ··</section> |
| 1918 | </section> | 1918 | </section> |
| 1919 | <section·class="detail"·id="simple_bind/3"> | 1919 | <section·class="detail"·id="simple_bind/3"> |
| 1920 | ··<div·class="detail-header"> | 1920 | ··<div·class="detail-header"> |
| Offset 247, 16 lines modified | Offset 247, 16 lines modified | ||
| 247 | ·{<madonna@chivas.du.etx.ericsson.se,17,0>, | 247 | ·{<madonna@chivas.du.etx.ericsson.se,17,0>, |
| 248 | ··················{registered_name,code_server}}, | 248 | ··················{registered_name,code_server}}, |
| 249 | ·{<madonna@chivas.du.etx.ericsson.se,20,0>, | 249 | ·{<madonna@chivas.du.etx.ericsson.se,20,0>, |
| 250 | ··················{registered_name,user}}, | 250 | ··················{registered_name,user}}, |
| 251 | ·{<madonna@chivas.du.etx.ericsson.se,38,0>, | 251 | ·{<madonna@chivas.du.etx.ericsson.se,38,0>, |
| 252 | ··················[]}]</code></pre><p>To·forward·standard·output·without·printing·the·result·term·(<em>again,·the·input | 252 | ··················[]}]</code></pre><p>To·forward·standard·output·without·printing·the·result·term·(<em>again,·the·input |
| 253 | ends·with·EOF·(Control-D)</em>):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">erl_call</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">s</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">e</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">sname</span><span·class="w">·</span><span·class="ss">madonna</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">fetch_stdout</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">no_result_term</span><span·class="w"> | 253 | ends·with·EOF·(Control-D)</em>):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">erl_call</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">s</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">e</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">sname</span><span·class="w">·</span><span·class="ss">madonna</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">fetch_stdout</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">no_result_term</span><span·class="w"> |
| 254 | </span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="9 | 254 | </span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="9508372796-1">(</span><span·class="s">"Number·of·schedulers:·</span><span·class="si">~p</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9508372796-2">[</span><s[·...·truncated·by·diffoscope;·len:·321,·SHA:·b1c3ba1ac503ade65bd2968b01b94d4bb3ee7859f70621747a1a54d5f4444cf5·...·]-1">)</span><span·class="p">,</span><span·class="w"> |
| 255 | </span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="9 | 255 | </span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="9508372796-4">(</span><span·class="s">"Number·of·logical·cores:·</span><span·class="si">~p</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9508372796-5">[</span[·...·truncated·by·diffoscope;·len:·342,·SHA:·e8196495fc7dd7299704c1449104725bfee293b47ecd72c92dbbd20211db25b6·...·]-4">)</span><span·class="p">.</span><span·class="w"> |
| 256 | </span><span·class="err">^</span><span·class="n">D</span><span·class="w"> | 256 | </span><span·class="err">^</span><span·class="n">D</span><span·class="w"> |
| 257 | </span><span·class="n">Number</span><span·class="w">·</span><span·class="k">of</span><span·class="w">·</span><span·class="nc">schedulers</span><span·class="p">:</span><span·class="w">·</span><span·class="mi">8</span><span·class="w"> | 257 | </span><span·class="n">Number</span><span·class="w">·</span><span·class="k">of</span><span·class="w">·</span><span·class="nc">schedulers</span><span·class="p">:</span><span·class="w">·</span><span·class="mi">8</span><span·class="w"> |
| 258 | </span><span·class="n">Number</span><span·class="w">·</span><span·class="k">of</span><span·class="w">·</span><span·class="ss">logical</span><span·class="w">·</span><span·class="nc">cores</span><span·class="p">:</span><span·class="w">·</span><span·class="mi">8</span></code></pre> | 258 | </span><span·class="n">Number</span><span·class="w">·</span><span·class="k">of</span><span·class="w">·</span><span·class="ss">logical</span><span·class="w">·</span><span·class="nc">cores</span><span·class="p">:</span><span·class="w">·</span><span·class="mi">8</span></code></pre> |
| 259 | </div> | 259 | </div> |
| 260 | <div·class="bottom-actions"·id="bottom-actions"> | 260 | <div·class="bottom-actions"·id="bottom-actions"> |
| 261 | ··<div·class="bottom-actions-item"> | 261 | ··<div·class="bottom-actions-item"> |
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| 3 | ?rw-r--r--··6.1·unx······730·bx·defN·25-Mar-18·0 | 3 | ?rw-r--r--··6.1·unx······730·bx·defN·25-Mar-18·08:47·OEBPS/title.xhtml |
| 4 | ?rw-r--r--··6.1·unx···105507·bx·defN·25-Mar-18·0 | 4 | ?rw-r--r--··6.1·unx···105507·bx·defN·25-Mar-18·08:47·OEBPS/notes.xhtml |
| 5 | ?rw-r--r--··6.1·unx·····1261·bx·defN·25-Mar-18·0 | 5 | ?rw-r--r--··6.1·unx·····1261·bx·defN·25-Mar-18·08:47·OEBPS/nav.xhtml |
| 6 | ?rw-r--r--··6.1·unx····16997·bx·defN·25-Mar-18·0 | 6 | ?rw-r--r--··6.1·unx····16997·bx·defN·25-Mar-18·08:47·OEBPS/erl_call_cmd.xhtml |
| 7 | ?rw-r--r--··6.1·unx····21296·bx·defN·25-Mar-18·0 | 7 | ?rw-r--r--··6.1·unx····21296·bx·defN·25-Mar-18·08:47·OEBPS/ei_users_guide.xhtml |
| 8 | ?rw-r--r--··6.1·unx·····6279·bx·defN·25-Mar-18·0 | 8 | ?rw-r--r--··6.1·unx·····6279·bx·defN·25-Mar-18·08:47·OEBPS/ei_global.xhtml |
| 9 | ?rw-r--r--··6.1·unx····67143·bx·defN·25-Mar-18·0 | 9 | ?rw-r--r--··6.1·unx····67143·bx·defN·25-Mar-18·08:47·OEBPS/ei_connect.xhtml |
| 10 | ?rw-r--r--··6.1·unx····68130·bx·defN·25-Mar-18·0 | 10 | ?rw-r--r--··6.1·unx····68130·bx·defN·25-Mar-18·08:47·OEBPS/ei.xhtml |
| 11 | ?rw-r--r--··6.1·unx····14562·bx·defN·25-Mar-18·0 | 11 | ?rw-r--r--··6.1·unx····14562·bx·defN·25-Mar-18·08:47·OEBPS/dist/epub-erlang-ESPT6BQV.css |
| 12 | ?rw-r--r--··6.1·unx······499·bx·defN·25-Mar-18·0 | 12 | ?rw-r--r--··6.1·unx······499·bx·defN·25-Mar-18·08:47·OEBPS/dist/epub-LSJCIYTM.js |
| 13 | ?rw-r--r--··6.1·unx·····1948·bx·defN·25-Mar-18·0 | 13 | ?rw-r--r--··6.1·unx·····1948·bx·defN·25-Mar-18·08:47·OEBPS/content.opf |
| 14 | ?rw-r--r--··6.1·unx·····5837·bx·defN·25-Mar-18·0 | 14 | ?rw-r--r--··6.1·unx·····5837·bx·defN·25-Mar-18·08:47·OEBPS/assets/logo.png |
| 15 | ?rw-r--r--··6.1·unx······252·bx·defN·25-Mar-18·0 | 15 | ?rw-r--r--··6.1·unx······252·bx·defN·25-Mar-18·08:47·META-INF/container.xml |
| 16 | ?rw-r--r--··6.1·unx······162·bx·defN·25-Mar-18·0 | 16 | ?rw-r--r--··6.1·unx······162·bx·defN·25-Mar-18·08:47·META-INF/com.apple.ibooks.display-options.xml |
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| 1 | Zip·archive·data,·made·by·v6.1·UNIX,·extract·using·at·least·v1.0,·last·modified,·last·modified·Sun,·Mar·18·2025·0 | 1 | Zip·archive·data,·made·by·v6.1·UNIX,·extract·using·at·least·v1.0,·last·modified,·last·modified·Sun,·Mar·18·2025·08:47:36,·uncompressed·size·20,·method=store |
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| 152 | ·{<madonna@chivas.du.etx.ericsson.se,17,0>, | 152 | ·{<madonna@chivas.du.etx.ericsson.se,17,0>, |
| 153 | ··················{registered_name,code_server}}, | 153 | ··················{registered_name,code_server}}, |
| 154 | ·{<madonna@chivas.du.etx.ericsson.se,20,0>, | 154 | ·{<madonna@chivas.du.etx.ericsson.se,20,0>, |
| 155 | ··················{registered_name,user}}, | 155 | ··················{registered_name,user}}, |
| 156 | ·{<madonna@chivas.du.etx.ericsson.se,38,0>, | 156 | ·{<madonna@chivas.du.etx.ericsson.se,38,0>, |
| 157 | ··················[]}]</code></pre><p>To·forward·standard·output·without·printing·the·result·term·(<em>again,·the·input | 157 | ··················[]}]</code></pre><p>To·forward·standard·output·without·printing·the·result·term·(<em>again,·the·input |
| 158 | ends·with·EOF·(Control-D)</em>):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">erl_call</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">s</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">e</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">sname</span><span·class="w">·</span><span·class="ss">madonna</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">fetch_stdout</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">no_result_term</span><span·class="w"> | 158 | ends·with·EOF·(Control-D)</em>):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">erl_call</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">s</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">e</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">sname</span><span·class="w">·</span><span·class="ss">madonna</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">fetch_stdout</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">no_result_term</span><span·class="w"> |
| 159 | </span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 159 | </span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="5673773624-1">(</span><span·class="s">"Number·of·schedulers:·</span><span·class="si">~p</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5673773624-2">[</span><[·...·truncated·by·diffoscope;·len:·322,·SHA:·fae6a114326aace4868c15e9b7619b32a80dc369d57ba8a338ff4f64a5d33030·...·]-1">)</span><span·class="p">,</span><span·class="w"> |
| 160 | </span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 160 | </span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="5673773624-4">(</span><span·class="s">"Number·of·logical·cores:·</span><span·class="si">~p</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5673773624-5">[</spa[·...·truncated·by·diffoscope;·len:·343,·SHA:·0c7441e23d7a762534523ec1ad3f8f83121148421b70c48194b80a082ec053fc·...·]-4">)</span><span·class="p">.</span><span·class="w"> |
| 161 | </span><span·class="err">^</span><span·class="n">D</span><span·class="w"> | 161 | </span><span·class="err">^</span><span·class="n">D</span><span·class="w"> |
| 162 | </span><span·class="n">Number</span><span·class="w">·</span><span·class="k">of</span><span·class="w">·</span><span·class="nc">schedulers</span><span·class="p">:</span><span·class="w">·</span><span·class="mi">8</span><span·class="w"> | 162 | </span><span·class="n">Number</span><span·class="w">·</span><span·class="k">of</span><span·class="w">·</span><span·class="nc">schedulers</span><span·class="p">:</span><span·class="w">·</span><span·class="mi">8</span><span·class="w"> |
| 163 | </span><span·class="n">Number</span><span·class="w">·</span><span·class="k">of</span><span·class="w">·</span><span·class="ss">logical</span><span·class="w">·</span><span·class="nc">cores</span><span·class="p">:</span><span·class="w">·</span><span·class="mi">8</span></code></pre> | 163 | </span><span·class="n">Number</span><span·class="w">·</span><span·class="k">of</span><span·class="w">·</span><span·class="ss">logical</span><span·class="w">·</span><span·class="nc">cores</span><span·class="p">:</span><span·class="w">·</span><span·class="mi">8</span></code></pre> |
| 164 | ··</body> | 164 | ··</body> |
| 165 | </html> | 165 | </html> |
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| 26 | dist/lato-latin-300-normal-YUMVEFOL.woff2 | 26 | dist/lato-latin-300-normal-YUMVEFOL.woff2 |
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| 32 | dist/remixicon-NKANDIL5.woff2 | 32 | dist/remixicon-NKANDIL5.woff2 |
| 33 | dist/search_data- | 33 | dist/search_data-07FF68FB.js |
| 34 | dist/sidebar_items-639C3385.js | 34 | dist/sidebar_items-639C3385.js |
| 35 | et.html | 35 | et.html |
| 36 | et_collector.html | 36 | et_collector.html |
| 37 | et_desc.html | 37 | et_desc.html |
| 38 | et_examples.html | 38 | et_examples.html |
| 39 | et_intro.html | 39 | et_intro.html |
| 40 | et_selector.html | 40 | et_selector.html |
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| 1 | Zip·file·size:·30254 | 1 | Zip·file·size:·302543·bytes,·number·of·entries:·29 |
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| 3 | ?rw-r--r--··6.1·unx······708·bx·defN·25-Mar-18·0 | 3 | ?rw-r--r--··6.1·unx······708·bx·defN·25-Mar-18·08:51·OEBPS/title.xhtml |
| 4 | ?rw-r--r--··6.1·unx····20297·bx·defN·25-Mar-18·0 | 4 | ?rw-r--r--··6.1·unx····20297·bx·defN·25-Mar-18·08:51·OEBPS/notes.xhtml |
| 5 | ?rw-r--r--··6.1·unx·····1427·bx·defN·25-Mar-18·0 | 5 | ?rw-r--r--··6.1·unx·····1427·bx·defN·25-Mar-18·08:51·OEBPS/nav.xhtml |
| 6 | ?rw-r--r--··6.1·unx····15128·bx·defN·25-Mar-18·0 | 6 | ?rw-r--r--··6.1·unx····15128·bx·defN·25-Mar-18·08:51·OEBPS/et_viewer.xhtml |
| 7 | ?rw-r--r--··6.1·unx····39785·bx·defN·25-Mar-18·0 | 7 | ?rw-r--r--··6.1·unx····39785·bx·defN·25-Mar-18·08:51·OEBPS/et_tutorial.xhtml |
| 8 | ?rw-r--r--··6.1·unx····14495·bx·defN·25-Mar-18·0 | 8 | ?rw-r--r--··6.1·unx····14495·bx·defN·25-Mar-18·08:51·OEBPS/et_selector.xhtml |
| 9 | ?rw-r--r--··6.1·unx·····3893·bx·defN·25-Mar-18·0 | 9 | ?rw-r--r--··6.1·unx·····3893·bx·defN·25-Mar-18·08:51·OEBPS/et_intro.xhtml |
| 10 | ?rw-r--r--··6.1·unx····94737·bx·defN·25-Mar-18·0 | 10 | ?rw-r--r--··6.1·unx····94737·bx·defN·25-Mar-18·08:51·OEBPS/et_examples.xhtml |
| 11 | ?rw-r--r--··6.1·unx····46399·bx·defN·25-Mar-18·0 | 11 | ?rw-r--r--··6.1·unx····46399·bx·defN·25-Mar-18·08:51·OEBPS/et_desc.xhtml |
| 12 | ?rw-r--r--··6.1·unx····51100·bx·defN·25-Mar-18·0 | 12 | ?rw-r--r--··6.1·unx····51100·bx·defN·25-Mar-18·08:51·OEBPS/et_collector.xhtml |
| 13 | ?rw-r--r--··6.1·unx····16970·bx·defN·25-Mar-18·0 | 13 | ?rw-r--r--··6.1·unx····16970·bx·defN·25-Mar-18·08:51·OEBPS/et.xhtml |
| 14 | ?rw-r--r--··6.1·unx····14562·bx·defN·25-Mar-18·0 | 14 | ?rw-r--r--··6.1·unx····14562·bx·defN·25-Mar-18·08:51·OEBPS/dist/epub-erlang-ESPT6BQV.css |
| 15 | ?rw-r--r--··6.1·unx······499·bx·defN·25-Mar-18·0 | 15 | ?rw-r--r--··6.1·unx······499·bx·defN·25-Mar-18·08:51·OEBPS/dist/epub-LSJCIYTM.js |
| 16 | ?rw-r--r--··6.1·unx·····3489·bx·defN·25-Mar-18·0 | 16 | ?rw-r--r--··6.1·unx·····3489·bx·defN·25-Mar-18·08:51·OEBPS/content.opf |
| 17 | ?rw-r--r--··6.1·unx····13425·bx·defN·25-Mar-18·0 | 17 | ?rw-r--r--··6.1·unx····13425·bx·defN·25-Mar-18·08:51·OEBPS/assets/sim_trans_write_lock.png |
| 18 | ?rw-r--r--··6.1·unx····19026·bx·defN·25-Mar-18·0 | 18 | ?rw-r--r--··6.1·unx····19026·bx·defN·25-Mar-18·08:51·OEBPS/assets/sim_trans_move_actor.png |
| 19 | ?rw-r--r--··6.1·unx····18936·bx·defN·25-Mar-18·0 | 19 | ?rw-r--r--··6.1·unx····18936·bx·defN·25-Mar-18·08:51·OEBPS/assets/sim_trans_mgr_actors.png |
| 20 | ?rw-r--r--··6.1·unx····15235·bx·defN·25-Mar-18·0 | 20 | ?rw-r--r--··6.1·unx····15235·bx·defN·25-Mar-18·08:51·OEBPS/assets/sim_trans_contents_viewer_mgr_actors.png |
| 21 | ?rw-r--r--··6.1·unx····13361·bx·defN·25-Mar-18·0 | 21 | ?rw-r--r--··6.1·unx····13361·bx·defN·25-Mar-18·08:51·OEBPS/assets/sim_trans_contents_viewer_collector.png |
| 22 | ?rw-r--r--··6.1·unx····19026·bx·defN·25-Mar-18·0 | 22 | ?rw-r--r--··6.1·unx····19026·bx·defN·25-Mar-18·08:51·OEBPS/assets/sim_trans.png |
| 23 | ?rw-r--r--··6.1·unx····46696·bx·defN·25-Mar-18·0 | 23 | ?rw-r--r--··6.1·unx····46696·bx·defN·25-Mar-18·08:51·OEBPS/assets/megaco_tracer.png |
| 24 | ?rw-r--r--··6.1·unx····19067·bx·defN·25-Mar-18·0 | 24 | ?rw-r--r--··6.1·unx····19067·bx·defN·25-Mar-18·08:51·OEBPS/assets/megaco_filter.png |
| 25 | ?rw-r--r--··6.1·unx····37915·bx·defN·25-Mar-18·0 | 25 | ?rw-r--r--··6.1·unx····37915·bx·defN·25-Mar-18·08:51·OEBPS/assets/megaco_collector.png |
| 26 | ?rw-r--r--··6.1·unx·····5837·bx·defN·25-Mar-18·0 | 26 | ?rw-r--r--··6.1·unx·····5837·bx·defN·25-Mar-18·08:51·OEBPS/assets/logo.png |
| 27 | ?rw-r--r--··6.1·unx····19999·bx·defN·25-Mar-18·0 | 27 | ?rw-r--r--··6.1·unx····19999·bx·defN·25-Mar-18·08:51·OEBPS/assets/live_trans.png |
| 28 | ?rw-r--r--··6.1·unx····23692·bx·defN·25-Mar-18·0 | 28 | ?rw-r--r--··6.1·unx····23692·bx·defN·25-Mar-18·08:51·OEBPS/assets/coffee_order.png |
| 29 | ?rw-r--r--··6.1·unx······252·bx·defN·25-Mar-18·0 | 29 | ?rw-r--r--··6.1·unx······252·bx·defN·25-Mar-18·08:51·META-INF/container.xml |
| 30 | ?rw-r--r--··6.1·unx······162·bx·defN·25-Mar-18·0 | 30 | ?rw-r--r--··6.1·unx······162·bx·defN·25-Mar-18·08:51·META-INF/com.apple.ibooks.display-options.xml |
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| 1 | Zip·archive·data,·made·by·v6.1·UNIX,·extract·using·at·least·v1.0,·last·modified,·last·modified·Sun,·Mar·18·2025·0 | 1 | Zip·archive·data,·made·by·v6.1·UNIX,·extract·using·at·least·v1.0,·last·modified,·last·modified·Sun,·Mar·18·2025·08:51:18,·uncompressed·size·20,·method=store |
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| 134 | <p>The·two·major·components·of·the·<code·class="inline">Event·Tracer·(ET)</code>·tool·is·a·graphical·sequence | 134 | <p>The·two·major·components·of·the·<code·class="inline">Event·Tracer·(ET)</code>·tool·is·a·graphical·sequence |
| 135 | chart·viewer·(<code·class="inline">et_viewer</code>)·and·its·backing·storage·(<code·class="inline">et_collector</code>).·One | 135 | chart·viewer·(<code·class="inline">et_viewer</code>)·and·its·backing·storage·(<code·class="inline">et_collector</code>).·One |
| 136 | <code·class="inline">Collector</code>·may·be·used·as·backing·storage·for·several·simultaneous·<code·class="inline">Viewers</code> | 136 | <code·class="inline">Collector</code>·may·be·used·as·backing·storage·for·several·simultaneous·<code·class="inline">Viewers</code> |
| 137 | where·each·one·may·display·a·different·view·of·the·same·trace·data.</p><p>The·interface·between·the·<code·class="inline">Collector</code>·and·its·<code·class="inline">Viewers</code>·is·public·in·order·to | 137 | where·each·one·may·display·a·different·view·of·the·same·trace·data.</p><p>The·interface·between·the·<code·class="inline">Collector</code>·and·its·<code·class="inline">Viewers</code>·is·public·in·order·to |
| 138 | enable·other·types·of·<code·class="inline">Viewers</code>.·However·in·the·following·text·we·will·focus·on | 138 | enable·other·types·of·<code·class="inline">Viewers</code>.·However·in·the·following·text·we·will·focus·on |
| 139 | usage·of·the·<code·class="inline">et_viewer</code>.</p><p>The·main·start·function·is·<a·href="et_viewer.html#start/1"><code·class="inline">et_viewer:start/1</code></a>.·By·default·it·will·start·both·an | 139 | usage·of·the·<code·class="inline">et_viewer</code>.</p><p>The·main·start·function·is·<a·href="et_viewer.html#start/1"><code·class="inline">et_viewer:start/1</code></a>.·By·default·it·will·start·both·an |
| 140 | <code·class="inline">et_collector</code>·and·an·<code·class="inline">et_viewer</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl·-pa·et/examples</span><span·class="w"> | 140 | <code·class="inline">et_collector</code>·and·an·<code·class="inline">et_viewer</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl·-pa·et/examples</span><span·class="w"> |
| 141 | </span><span·class="n">Erlang</span><span·class="w">·</span><span·class="n">R13B03</span><span·class="w">·</span><span·class="p"·data-group-id=" | 141 | </span><span·class="n">Erlang</span><span·class="w">·</span><span·class="n">R13B03</span><span·class="w">·</span><span·class="p"·data-group-id="0042710402-1">(</span><span·class="ss">erts</span><span·class="o">-</span><span·class="mf">5.7</span><span·class="p">.</span><span·class="mi">4</span><span·class="p"·data-group-id="0042710402-1">)</span><span·class="w">·</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·1130,·SHA:·6df8a5cfae858316b3d283f12fd7532afc066e469f3b6993bb7e76abdaba2f4a·...·]-6">]</span><span·class="w"> |
| 142 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V5</span><span·class="p">.</span><span·class="mf">7.4</span><span·class="w">··</span><span·class="p"·data-group-id=" | 142 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V5</span><span·class="p">.</span><span·class="mf">7.4</span><span·class="w">··</span><span·class="p"·data-group-id="0042710402-7">(</span><span·class="ss">abort</span><span·class="w">·</span><span·class="ss">with</span><span·class="w">·</span><span·class="err">^</span><span·class="n">G</span><span·class="p"·data-group-id="0042710402-7">)</span><span·class="gp·unselectable"> |
| 143 | 1>·</span><span·class="p"·data-group-id=" | 143 | 1>·</span><span·class="p"·data-group-id="0042710402-8">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Viewer</span><span·class="p"·data-group-id="0042710402-8">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·[·...·truncated·by·diffoscope;·len:·282,·SHA:·8d916eedd13c5422b94546bf201f38e929f385caa1f2fbb4f7297a054bfadfed·...·]-9">)</span><span·class="p">.</span><span·class="w"> |
| 144 | </span><span·class="p"·data-group-id=" | 144 | </span><span·class="p"·data-group-id="0042710402-11">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.40</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="0042710402-11">}</span></code></pre><p>A·<code·class="inline">Viewer</code>·gets·trace·<code·class="inline">Events</code>·from·its·<code·class="inline">Collector</code>·by·polling·it·regularly·for |
| 145 | more·<code·class="inline">Events</code>·to·display.·<code·class="inline">Events</code>·are·for·example·reported·to·the·<code·class="inline">Collector</code> | 145 | more·<code·class="inline">Events</code>·to·display.·<code·class="inline">Events</code>·are·for·example·reported·to·the·<code·class="inline">Collector</code> |
| 146 | with·<a·href="et_collector.html#report_event/6"><code·class="inline">et_collector:report_event/6</code></a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="n">Collector</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">et_viewer</span><span·class="p">:</span><span·class="nf">get_collector_pid</span><span·class="p"·data-group-id=" | 146 | with·<a·href="et_collector.html#report_event/6"><code·class="inline">et_collector:report_event/6</code></a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="n">Collector</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">et_viewer</span><span·class="p">:</span><span·class="nf">get_collector_pid</span><span·class="p"·data-group-id="7466553816-1">(</span><span·class="n">Viewer</span><span·class="p"·data-group-id="7466553816-1">)</span><span·class="p">.</span><span·class="w"> |
| 147 | </span><span·class="o"><</span><span·class="mf">0.39</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="gp·unselectable"> | 147 | </span><span·class="o"><</span><span·class="mf">0.39</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="gp·unselectable"> |
| 148 | 3>·</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id=" | 148 | 3>·</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id="7466553816-2">(</span><span·class="n">Collector</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">60</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">my_shell</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">mnesia_tm</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">start_outer</span><span·class="p">,</span><span·class="gp·unselectable"> |
| 149 | 3>·</span><span·class="w">··························</span><span·class="s">"Start·outer·transaction"</span><span·class="p"·data-group-id=" | 149 | 3>·</span><span·class="w">··························</span><span·class="s">"Start·outer·transaction"</span><span·class="p"·data-group-id="7466553816-2">)</span><span·class="p">,</span><span·class="gp·unselectable"> |
| 150 | 3>·</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id=" | 150 | 3>·</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id="7466553816-3">(</span><span·class="n">Collector</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">40</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">mnesia_tm</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">my_shell</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">new_tid</span><span·class="p">,</span><span·class="gp·unselectable"> |
| 151 | 3>·</span><span·class="w">··························</span><span·class="s">"New·transaction·id·is·4711"</span><span·class="p"·data-group-id=" | 151 | 3>·</span><span·class="w">··························</span><span·class="s">"New·transaction·id·is·4711"</span><span·class="p"·data-group-id="7466553816-3">)</span><span·class="p">,</span><span·class="gp·unselectable"> |
| 152 | 3>·</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id=" | 152 | 3>·</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id="7466553816-4">(</span><span·class="n">Collector</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">20</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">my_shell</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">mnesia_locker</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">try_write_lock</span><span·class="p">,</span><span·class="gp·unselectable"> |
| 153 | 3>·</span><span·class="w">··························</span><span·class="s">"Acquire·write·lock·for·{my_tab,·key}"</span><span·class="p"·data-group-id=" | 153 | 3>·</span><span·class="w">··························</span><span·class="s">"Acquire·write·lock·for·{my_tab,·key}"</span><span·class="p"·data-group-id="7466553816-4">)</span><span·class="p">,</span><span·class="gp·unselectable"> |
| 154 | 3>·</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id=" | 154 | 3>·</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id="7466553816-5">(</span><span·class="n">Collector</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">10</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">mnesia_locker</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">my_shell</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">granted</span><span·class="p">,</span><span·class="gp·unselectable"> |
| 155 | 3>·</span><span·class="w">··························</span><span·class="s">"You·got·the·write·lock·for·{my_tab,·key}"</span><span·class="p"·data-group-id=" | 155 | 3>·</span><span·class="w">··························</span><span·class="s">"You·got·the·write·lock·for·{my_tab,·key}"</span><span·class="p"·data-group-id="7466553816-5">)</span><span·class="p">,</span><span·class="gp·unselectable"> |
| 156 | 3>·</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id=" | 156 | 3>·</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id="7466553816-6">(</span><span·class="n">Collector</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">60</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">my_shell</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">do_commit</span><span·class="p">,</span><span·class="gp·unselectable"> |
| 157 | 3>·</span><span·class="w">··························</span><span·class="s">"Perform··transaction·commit"</span><span·class="p"·data-group-id=" | 157 | 3>·</span><span·class="w">··························</span><span·class="s">"Perform··transaction·commit"</span><span·class="p"·data-group-id="7466553816-6">)</span><span·class="p">,</span><span·class="gp·unselectable"> |
| 158 | 3>·</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id=" | 158 | 3>·</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id="7466553816-7">(</span><span·class="n">Collector</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">40</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">my_shell</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">mnesia_locker</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">release_tid</span><span·class="p">,</span><span·class="gp·unselectable"> |
| 159 | 3>·</span><span·class="w">··························</span><span·class="s">"Release·all·locks·for·transaction·4711"</span><span·class="p"·data-group-id=" | 159 | 3>·</span><span·class="w">··························</span><span·class="s">"Release·all·locks·for·transaction·4711"</span><span·class="p"·data-group-id="7466553816-7">)</span><span·class="p">,</span><span·class="gp·unselectable"> |
| 160 | 3>·</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id=" | 160 | 3>·</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id="7466553816-8">(</span><span·class="n">Collector</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">60</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">my_shell</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">mnesia_tm</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">delete_transaction</span><span·class="p">,</span><span·class="gp·unselectable"> |
| 161 | 3>·</span><span·class="w">··························</span><span·class="s">"End·of·outer·transaction"</span><span·class="p"·data-group-id=" | 161 | 3>·</span><span·class="w">··························</span><span·class="s">"End·of·outer·transaction"</span><span·class="p"·data-group-id="7466553816-8">)</span><span·class="p">,</span><span·class="gp·unselectable"> |
| 162 | 3>·</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id=" | 162 | 3>·</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id="7466553816-9">(</span><span·class="n">Collector</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">20</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">my_shell</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">end_outer</span><span·class="p">,</span><span·class="gp·unselectable"> |
| 163 | 3>·</span><span·class="w">··························</span><span·class="s">"Transaction·returned·{atomic,·ok}"</span><span·class="p"·data-group-id=" | 163 | 3>·</span><span·class="w">··························</span><span·class="s">"Transaction·returned·{atomic,·ok}"</span><span·class="p"·data-group-id="7466553816-9">)</span><span·class="p">.</span><span·class="w"> |
| 164 | </span><span·class="p"·data-group-id=" | 164 | </span><span·class="p"·data-group-id="7466553816-10">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="7466553816-11">{</span><span·class="ss">table_handle</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.39</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="mi">16402</span><span·class="p">,</span><span·class="ss">trace_ts</span><span·class="p">,</span><span·class="w"> |
| 165 | ·····</span><span·class="p">#</span><span·class="n">Fun</span><span·class="o"><</span><span·class="ss">et_collector</span><span·class="p">.</span><span·class="mf">0.62831470</span><span·class="o">></span><span·class="p"·data-group-id=" | 165 | ·····</span><span·class="p">#</span><span·class="n">Fun</span><span·class="o"><</span><span·class="ss">et_collector</span><span·class="p">.</span><span·class="mf">0.62831470</span><span·class="o">></span><span·class="p"·data-group-id="7466553816-11">}</span><span·class="p"·data-group-id="7466553816-10">}</span></code></pre><p>This·actually·is·a·simulation·of·the·process·<code·class="inline">Events</code>·caused·by·a·<code·class="inline">Mnesia</code> |
| 166 | transaction·that·writes·a·record·in·a·local·table:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">transaction</span><span·class="p"·data-group-id="0 | 166 | transaction·that·writes·a·record·in·a·local·table:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">transaction</span><span·class="p"·data-group-id="0924462623-1">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="0924462623-2">(</span><span·class="p"·data-group-id="0924462623-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nc">mnesia</s[·...·truncated·by·diffoscope;·len:·540,·SHA:·80c8ee1fec63d59180eb958a3f16354950161dce96510507bc08f81921dde223·...·]-1">)</span><span·class="p">.</span></code></pre><p>At·this·stage·when·we·have·a·couple·of·<code·class="inline">Events</code>,·it·is·time·to·show·how·it·looks |
| 167 | like·in·the·graphical·interface·of·<code·class="inline">et_viewer</code>:</p><p><img·src="assets/sim_trans.png"·alt="A·simulated·Mnesia·transaction·which·writes·one·record"·title="A·simulated·Mnesia·transaction·which·writes·one·record"/></p><p>In·the·sequence·chart,·the·actors·(which·symbolically·has·performed·the·<code·class="inline">Event</code>) | 167 | like·in·the·graphical·interface·of·<code·class="inline">et_viewer</code>:</p><p><img·src="assets/sim_trans.png"·alt="A·simulated·Mnesia·transaction·which·writes·one·record"·title="A·simulated·Mnesia·transaction·which·writes·one·record"/></p><p>In·the·sequence·chart,·the·actors·(which·symbolically·has·performed·the·<code·class="inline">Event</code>) |
| 168 | are·shown·as·named·vertical·bars.·The·order·of·the·actors·may·be·altered·by | 168 | are·shown·as·named·vertical·bars.·The·order·of·the·actors·may·be·altered·by |
| 169 | dragging·(hold·mouse·button·1·pressed·during·the·operation)·the·name·tag·of·an | 169 | dragging·(hold·mouse·button·1·pressed·during·the·operation)·the·name·tag·of·an |
| 170 | actor·and·drop·it·elsewhere:</p><p><img·src="assets/sim_trans_move_actor.png"·alt="Two·actors·has·switched·places"·title="Two·actors·has·switched·places"/></p><p>An·<code·class="inline">Event</code>·may·be·an·action·performed·by·one·single·actor·(blue·text·label)·or | 170 | actor·and·drop·it·elsewhere:</p><p><img·src="assets/sim_trans_move_actor.png"·alt="Two·actors·has·switched·places"·title="Two·actors·has·switched·places"/></p><p>An·<code·class="inline">Event</code>·may·be·an·action·performed·by·one·single·actor·(blue·text·label)·or |
| 171 | it·may·involve·two·actors·and·is·then·depicted·as·an·arrow·directed·from·one | 171 | it·may·involve·two·actors·and·is·then·depicted·as·an·arrow·directed·from·one |
| 172 | actor·to·another·(red·text·label).·Details·of·an·<code·class="inline">Event</code>·can·be·shown·by | 172 | actor·to·another·(red·text·label).·Details·of·an·<code·class="inline">Event</code>·can·be·shown·by |
| 173 | clicking·(press·and·release·the·mouse·button·1)·on·the·event·label·text·or·on | 173 | clicking·(press·and·release·the·mouse·button·1)·on·the·event·label·text·or·on |
| Offset 177, 19 lines modified | Offset 177, 19 lines modified | ||
| 177 | ··<a·href="#filters-and-dictionary"·class="hover-link"> | 177 | ··<a·href="#filters-and-dictionary"·class="hover-link"> |
| 178 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 178 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 179 | ··</a> | 179 | ··</a> |
| 180 | ··<span·class="text">Filters·and·dictionary</span> | 180 | ··<span·class="text">Filters·and·dictionary</span> |
| 181 | </h2> | 181 | </h2> |
| 182 | <p>The·<code·class="inline">Event·Tracer·(ET)</code>·uses·named·filters·in·various·contexts.·An·Event·Trace | 182 | <p>The·<code·class="inline">Event·Tracer·(ET)</code>·uses·named·filters·in·various·contexts.·An·Event·Trace |
| 183 | filter·is·an·<code·class="inline">Erlang·fun</code>·that·takes·some·trace·data·as·input·and·returns·a | 183 | filter·is·an·<code·class="inline">Erlang·fun</code>·that·takes·some·trace·data·as·input·and·returns·a |
| 184 | possibly·modified·version·of·it:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">filter</span><span·class="p"·data-group-id=" | 184 | possibly·modified·version·of·it:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">filter</span><span·class="p"·data-group-id="4845961447-1">(</span><span·class="n">TraceData</span><span·class="p"·data-group-id="4845961447-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">false</span><span·class="w">·</span><span·class="p">|</s[·...·truncated·by·diffoscope;·len:·329,·SHA:·5cfc49448c63ec3314b3d860f5ed17d85e8586966086abd158fa54303001ea57·...·]-2">}</span><span·class="w"> |
| 185 | </span><span·class="n">TraceData</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Event</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="nf">erlang_trace_data</span><span·class="p"·data-group-id=" | 185 | </span><span·class="n">TraceData</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Event</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="nf">erlang_trace_data</span><span·class="p"·data-group-id="4845961447-3">(</span><span·class="p"·data-group-id="4845961447-3">)</span><span·class="w"> |
| 186 | </span><span·class="n">Event</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">event</span><span·class="p"·data-group-id=" | 186 | </span><span·class="n">Event</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">event</span><span·class="p"·data-group-id="4845961447-4">{</span><span·class="p"·data-group-id="4845961447-4">}</span><span·class="w"> |
| 187 | </span><span·class="n">NewEvent</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">event</span><span·class="p"·data-group-id=" | 187 | </span><span·class="n">NewEvent</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">event</span><span·class="p"·data-group-id="4845961447-5">{</span><span·class="p"·data-group-id="4845961447-5">}</span></code></pre><p>The·interface·of·the·filter·function·is·the·same·as·the·the·filter·functions·for |
| 188 | the·good·old·<a·href="../../../../lib/stdlib-6.2.1/doc/html/lists.html#filtermap/2"><code·class="inline">lists:filtermap/2</code></a>.·If·the·filter·returns·<code·class="inline">false</code>·it·means·that | 188 | the·good·old·<a·href="../../../../lib/stdlib-6.2.1/doc/html/lists.html#filtermap/2"><code·class="inline">lists:filtermap/2</code></a>.·If·the·filter·returns·<code·class="inline">false</code>·it·means·that |
| 189 | the·trace·data·should·silently·be·dropped.·<code·class="inline">true</code>·means·that·the·trace·data·data | 189 | the·trace·data·should·silently·be·dropped.·<code·class="inline">true</code>·means·that·the·trace·data·data |
| 190 | already·is·an·<code·class="inline">Event·Record</code>·and·that·it·should·be·kept·as·it·is.·<code·class="inline">true</code>·means | 190 | already·is·an·<code·class="inline">Event·Record</code>·and·that·it·should·be·kept·as·it·is.·<code·class="inline">true</code>·means |
| 191 | that·the·<code·class="inline">TraceData</code>·already·is·an·<code·class="inline">Event·Record</code>·and·that·it·should·be·kept·as | 191 | that·the·<code·class="inline">TraceData</code>·already·is·an·<code·class="inline">Event·Record</code>·and·that·it·should·be·kept·as |
| 192 | it·is.·<code·class="inline">{true,·NewEvent}</code>·means·that·the·original·trace·data·should·be·replaced | 192 | it·is.·<code·class="inline">{true,·NewEvent}</code>·means·that·the·original·trace·data·should·be·replaced |
| 193 | with·<code·class="inline">Event</code>.·This·provides·means·to·get·rid·of·unwanted·<code·class="inline">Events</code>·as·well·as | 193 | with·<code·class="inline">Event</code>.·This·provides·means·to·get·rid·of·unwanted·<code·class="inline">Events</code>·as·well·as |
| 194 | enabling·alternate·views·of·an·<code·class="inline">Event</code>.</p><p>The·first·filter·that·the·trace·data·is·exposed·for·is·the·<code·class="inline">Collector·Filter</code>. | 194 | enabling·alternate·views·of·an·<code·class="inline">Event</code>.</p><p>The·first·filter·that·the·trace·data·is·exposed·for·is·the·<code·class="inline">Collector·Filter</code>. |
| Offset 208, 29 lines modified | Offset 208, 29 lines modified | ||
| 208 | When·a·<code·class="inline">Viewer</code>·is·started·it·is·registered·as·a·subscriber·of·dictionary | 208 | When·a·<code·class="inline">Viewer</code>·is·started·it·is·registered·as·a·subscriber·of·dictionary |
| 209 | updates.</p><p>In·each·<code·class="inline">Viewer</code>·there·is·only·one·filter·that·is·active·and·all·trace·<code·class="inline">Events</code> | 209 | updates.</p><p>In·each·<code·class="inline">Viewer</code>·there·is·only·one·filter·that·is·active·and·all·trace·<code·class="inline">Events</code> |
| 210 | that·the·<code·class="inline">Viewer</code>·gets·from·the·<code·class="inline">Collector</code>·will·pass·thru·that·filter.·By | 210 | that·the·<code·class="inline">Viewer</code>·gets·from·the·<code·class="inline">Collector</code>·will·pass·thru·that·filter.·By |
| 211 | writing·clever·filters·it·is·possible·to·customize·how·the·<code·class="inline">Events</code>·looks·like | 211 | writing·clever·filters·it·is·possible·to·customize·how·the·<code·class="inline">Events</code>·looks·like |
| 212 | in·the·viewer.·The·following·filter·in·<code·class="inline">et/examples/et_demo.erl</code>·replaces·the | 212 | in·the·viewer.·The·following·filter·in·<code·class="inline">et/examples/et_demo.erl</code>·replaces·the |
| 213 | actor·names·<code·class="inline">mnesia_tm</code>·and·<code·class="inline">mnesia_locker</code>·and·leaves·everything·else·in·the | 213 | actor·names·<code·class="inline">mnesia_tm</code>·and·<code·class="inline">mnesia_locker</code>·and·leaves·everything·else·in·the |
| 214 | record·as·it·was:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w"> | 214 | record·as·it·was:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w"> |
| 215 | </span><span·class="nf">mgr_actors</span><span·class="p"·data-group-id=" | 215 | </span><span·class="nf">mgr_actors</span><span·class="p"·data-group-id="3719517774-1">(</span><span·class="n">E</span><span·class="p"·data-group-id="3719517774-1">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_record</span><span·class="p"·data-group-id="3719517774-2">(</s[·...·truncated·by·diffoscope;·len:·146,·SHA:·85332d607955a63ee0f2b9d007e17c7c23a1c96187629737d6966bf17cd825c0·...·]-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 216 | ····</span><span·class="n">Actor</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 216 | ····</span><span·class="n">Actor</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="3719517774-3">(</span><span·class="n">A</span><span·class="p"·data-group-id="3719517774-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 217 | ···············</span><span·class="k">case</span><span·class="w">·</span><span·class="n">A</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> | 217 | ···············</span><span·class="k">case</span><span·class="w">·</span><span·class="n">A</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 218 | ···················</span><span·class="ss">mnesia_tm</span><span·class="w">·····</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">trans_mgr</span><span·class="p">;</span><span·class="w"> | 218 | ···················</span><span·class="ss">mnesia_tm</span><span·class="w">·····</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">trans_mgr</span><span·class="p">;</span><span·class="w"> |
| 219 | ···················</span><span·class="ss">mnesia_locker</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">lock_mgr</span><span·class="p">;</span><span·class="w"> | 219 | ···················</span><span·class="ss">mnesia_locker</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">lock_mgr</span><span·class="p">;</span><span·class="w"> |
| 220 | ···················</span><span·class="p">_</span><span·class="w">·············</span><span·class="p">-></span><span·class="w">·</span><span·class="n">A</span><span·class="w"> | 220 | ···················</span><span·class="p">_</span><span·class="w">·············</span><span·class="p">-></span><span·class="w">·</span><span·class="n">A</span><span·class="w"> |
| 221 | ···············</span><span·class="k">end</span><span·class="w"> | 221 | ···············</span><span·class="k">end</span><span·class="w"> |
| 222 | ············</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 222 | ············</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 223 | ····</span><span·class="p"·data-group-id=" | 223 | ····</span><span·class="p"·data-group-id="3719517774-4">{</span><span·class="ss">true</span><span·class="p">,</span><span·class="w">·</span><span·class="n">E</span><span·class="o">#</span><span·class="ss">event</span><span·class="p"·data-group-id="3719517774-5">{</span><span·class="ss">from</span>[·...·truncated·by·diffoscope;·len:·323,·SHA:·c0691d346551d60107374ebe038d8261a4b30a5811d9d02f05281449189c2e43·...·]-6">)</span><span·class="p">,</span><span·class="w"> |
| 224 | ···················</span><span·class="ss">to</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Actor</span><span·class="p"·data-group-id=" | 224 | ···················</span><span·class="ss">to</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Actor</span><span·class="p"·data-group-id="3719517774-7">(</span><span·class="n">E</span><span·class="o">#</span><span·class="ss">event</span><span·class="p">.</span><span·class="ss">to</span><span·class="p"·data-group-id="3719517774-7">)</span><span·class="p">,</span><span·class="w"> |
| 225 | ···················</span><span·class="ss">contents</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 225 | ···················</span><span·class="ss">contents</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="3719517774-8">[</span><span·class="p"·data-group-id="3719517774-9">{</span><span·class="ss">orig_from</span><span·class="p">,</span><span·class="w">·</span><span·class="n">E</span><span·class="o">#</span><span·class="ss">event</span><span·class="p">.</span[·...·truncated·by·diffoscope;·len:·70,·SHA:·2c023d04db32cc8f5522d2528bdd61f0565040874055ea7352b7ee6e06c43860·...·]-9">}</span><span·class="p">,</span><span·class="w"> |
| 226 | ·······························</span><span·class="p"·data-group-id=" | 226 | ·······························</span><span·class="p"·data-group-id="3719517774-10">{</span><span·class="ss">orig_to</span><span·class="p">,</span><span·class="w">···</span><span·class="n">E</span><span·class="o">#</span><span·class="ss">event</span><span·class="p">.</span><span·class="ss">to</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·16,·SHA:·c35f7b0ef9d38360bd5864c130397ca84e7de380383842e85eb346a63dc02cab·...·]-10">}</span><span·class="p">,</span><span·class="w"> |
| 227 | ·······························</span><span·class="p"·data-group-id=" | 227 | ·······························</span><span·class="p"·data-group-id="3719517774-11">{</span><span·class="ss">orig_contents</span><span·class="p">,</span><span·class="w">·</span><span·class="n">E</span><span·class="o">#</span><span·class="ss">event</span><span·class="p">.</span><span·class="ss">contents</span><span·class="p"[·...·truncated·by·diffoscope;·len:·949,·SHA:·f81429e8fa11a6df6e4550356fbbd3df751891c995253963b5ac160694f49bcb·...·]-2">)</span><span·class="w">·</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 228 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="o"><</span><span·class="ss">erl_eval</span><span·class="p">.</span><span·class="mf">6.13229925</span><span·class="o">></span><span·class="gp·unselectable"> | 228 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="o"><</span><span·class="ss">erl_eval</span><span·class="p">.</span><span·class="mf">6.13229925</span><span·class="o">></span><span·class="gp·unselectable"> |
| 229 | 5>·</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">dict_insert</span><span·class="p"·data-group-id=" | 229 | 5>·</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">dict_insert</span><span·class="p"·data-group-id="5775902026-3">(</span><span·class="n">Collector</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5775902026-4">{</span><span·class="ss">filter</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">mgr_ac[·...·truncated·by·diffoscope;·len:·179,·SHA:·748c6de8b39cb03bc546716859572099e8569a46826470e1dc9dd7bc43a6a066·...·]-3">)</span><span·class="p">.</span><span·class="w"> |
| 230 | </span><span·class="ss">ok</span></code></pre><p>you·will·see·that·the·<code·class="inline">Filter</code>·menu·in·all·viewers·have·got·a·new·entry·called | 230 | </span><span·class="ss">ok</span></code></pre><p>you·will·see·that·the·<code·class="inline">Filter</code>·menu·in·all·viewers·have·got·a·new·entry·called |
| 231 | <code·class="inline">mgr_actors</code>.·Select·it,·and·a·new·<code·class="inline">Viewer</code>·window·will·pop·up:</p><p><img·src="assets/sim_trans_mgr_actors.png"·alt="The·same·trace·data·in·a·different·view"·title="The·same·trace·data·in·a·different·view"/></p><p>In·order·to·see·the·nitty·gritty·details·of·an·<code·class="inline">Event</code>·you·may·click·on·the | 231 | <code·class="inline">mgr_actors</code>.·Select·it,·and·a·new·<code·class="inline">Viewer</code>·window·will·pop·up:</p><p><img·src="assets/sim_trans_mgr_actors.png"·alt="The·same·trace·data·in·a·different·view"·title="The·same·trace·data·in·a·different·view"/></p><p>In·order·to·see·the·nitty·gritty·details·of·an·<code·class="inline">Event</code>·you·may·click·on·the |
| 232 | <code·class="inline">Event</code>·in·order·to·start·a·<code·class="inline">Contents·Viewer</code>·for·that·<code·class="inline">Event</code>.·In·the | 232 | <code·class="inline">Event</code>·in·order·to·start·a·<code·class="inline">Contents·Viewer</code>·for·that·<code·class="inline">Event</code>.·In·the |
| 233 | <code·class="inline">Contents·Viewer</code>·there·also·is·a·filter·menu·that·enables·inspection·of·the | 233 | <code·class="inline">Contents·Viewer</code>·there·also·is·a·filter·menu·that·enables·inspection·of·the |
| 234 | <code·class="inline">Event</code>·from·other·views·than·the·one·selected·in·the·viewer.·A·click·on·the | 234 | <code·class="inline">Event</code>·from·other·views·than·the·one·selected·in·the·viewer.·A·click·on·the |
| 235 | <code·class="inline">new_tid</code>·<code·class="inline">Event</code>·will·cause·a·<code·class="inline">Contents·Viewer</code>·window·to·pop·up,·showing·the | 235 | <code·class="inline">new_tid</code>·<code·class="inline">Event</code>·will·cause·a·<code·class="inline">Contents·Viewer</code>·window·to·pop·up,·showing·the |
| 236 | <code·class="inline">Event</code>·in·the·<code·class="inline">mgr_actors</code>·view:</p><p><img·src="assets/sim_trans_contents_viewer_mgr_actors.png"·alt="The·trace·Event·in·the·mgr_actors·view"·title="The·trace·Event·in·the·mgr_actors·view"/></p><p>Select·the·<code·class="inline">all</code>·entry·in·the·<code·class="inline">Filters</code>·menu·and·a·new·<code·class="inline">Contents·Viewer·window</code> | 236 | <code·class="inline">Event</code>·in·the·<code·class="inline">mgr_actors</code>·view:</p><p><img·src="assets/sim_trans_contents_viewer_mgr_actors.png"·alt="The·trace·Event·in·the·mgr_actors·view"·title="The·trace·Event·in·the·mgr_actors·view"/></p><p>Select·the·<code·class="inline">all</code>·entry·in·the·<code·class="inline">Filters</code>·menu·and·a·new·<code·class="inline">Contents·Viewer·window</code> |
| Offset 129, 178 lines modified | Offset 129, 178 lines modified | ||
| 129 | ··<a·href="#a-simulated-mnesia-transaction"·class="hover-link"> | 129 | ··<a·href="#a-simulated-mnesia-transaction"·class="hover-link"> |
| 130 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 130 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 131 | ··</a> | 131 | ··</a> |
| 132 | ··<span·class="text">A·simulated·Mnesia·transaction</span> | 132 | ··<span·class="text">A·simulated·Mnesia·transaction</span> |
| 133 | </h2> | 133 | </h2> |
| 134 | <p>The·Erlang·code·for·running·the·simulated·<code·class="inline">Mnesia</code>·transaction·example·in·the | 134 | <p>The·Erlang·code·for·running·the·simulated·<code·class="inline">Mnesia</code>·transaction·example·in·the |
| 135 | previous·chapter·is·included·in·the·<code·class="inline">et/examples/et_demo.erl</code>·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w"> | 135 | previous·chapter·is·included·in·the·<code·class="inline">et/examples/et_demo.erl</code>·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w"> |
| 136 | </span><span·class="nf">sim_trans</span><span·class="p"·data-group-id=" | 136 | </span><span·class="nf">sim_trans</span><span·class="p"·data-group-id="6027526414-1">(</span><span·class="p"·data-group-id="6027526414-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 137 | ····</span><span·class="nf">sim_trans</span><span·class="p"·data-group-id=" | 137 | ····</span><span·class="nf">sim_trans</span><span·class="p"·data-group-id="6027526414-2">(</span><span·class="p"·data-group-id="6027526414-3">[</span><span·class="p"·data-group-id="6027526414-3">]</span><span·class="p"·data-group-id="6027526414-2">)</span><span·class="p">.</span><span·class="w"> |
| 138 | </span><span·class="nf">sim_trans</span><span·class="p"·data-group-id=" | 138 | </span><span·class="nf">sim_trans</span><span·class="p"·data-group-id="6027526414-4">(</span><span·class="n">ExtraOptions</span><span·class="p"·data-group-id="6027526414-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 139 | ····</span><span·class="n">Options</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="8939722255-5">[</span><span·class="p"·data-group-id="8939722255-6">{</span><span·class="ss">dict_insert</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8939722255-7">{</span><span·class="ss">filter</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">mgr_actors</span><span·class="p"·data-group-id="8939722255-7">}</span><span·class="p">,</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">mgr_actors</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id="8939722255-6">}</span><span·class="p"·data-group-id="8939722255-5">]</span><span·class="p">,</span><span·class="w"> | ||
| 140 | ····</span><span·class=" | 139 | ····</span><span·class="n">Options</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6027526414-5">[</span><span·class="p"·data-group-id="6027526414-6">{</span><span·class="ss">dict_insert</span><span·class="p">,</span><s[·...·truncated·by·diffoscope;·len:·520,·SHA:·b7ff82625c22211ace11013ced7ba3ef73276e43a05474410ab9e58bb18f7f7c·...·]</span><span·class="p">,</span><span·class="w"> |
| 140 | ····</span><span·class="p"·data-group-id="6027526414-8">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Viewer</span><span·class="p"·data-group-id="6027526414-8">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">et_viewer</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id="6027526414-9">(</span><span·class="n">Options</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="n">ExtraOptions</span><span·class="p"·data-group-id="6027526414-9">)</span><span·class="p">,</span><span·class="w"> | ||
| 141 | ····</span><span·class="n">Collector</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">et_viewer</span><span·class="p">:</span><span·class="nf">get_collector_pid</span><span·class="p"·data-group-id=" | 141 | ····</span><span·class="n">Collector</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">et_viewer</span><span·class="p">:</span><span·class="nf">get_collector_pid</span><span·class="p"·data-group-id="6027526414-10">(</span><span·class="n">Viewer</span><span·class="p"·data-group-id="6027526414-10">)</span><span·class="p">,</span><span·class="w"> |
| 142 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id=" | 142 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id="6027526414-11">(</span><span·class="n">Collector</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">60</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">my_shell</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">mnesia_tm</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">start_outer</span><span·class="p">,</span><span·class="w"> |
| 143 | ······························</span><span·class="s">"Start·outer·transaction"</span><span·class="p"·data-group-id=" | 143 | ······························</span><span·class="s">"Start·outer·transaction"</span><span·class="p"·data-group-id="6027526414-11">)</span><span·class="p">,</span><span·class="w"> |
| 144 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id=" | 144 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id="6027526414-12">(</span><span·class="n">Collector</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">40</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">mnesia_tm</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">my_shell</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">new_tid</span><span·class="p">,</span><span·class="w"> |
| 145 | ······························</span><span·class="s">"New·transaction·id·is·4711"</span><span·class="p"·data-group-id=" | 145 | ······························</span><span·class="s">"New·transaction·id·is·4711"</span><span·class="p"·data-group-id="6027526414-12">)</span><span·class="p">,</span><span·class="w"> |
| 146 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id=" | 146 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id="6027526414-13">(</span><span·class="n">Collector</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">20</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">my_shell</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">mnesia_locker</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">try_write_lock</span><span·class="p">,</span><span·class="w"> |
| 147 | ······························</span><span·class="s">"Acquire·write·lock·for·{my_tab,·key}"</span><span·class="p"·data-group-id=" | 147 | ······························</span><span·class="s">"Acquire·write·lock·for·{my_tab,·key}"</span><span·class="p"·data-group-id="6027526414-13">)</span><span·class="p">,</span><span·class="w"> |
| 148 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id=" | 148 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id="6027526414-14">(</span><span·class="n">Collector</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">10</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">mnesia_locker</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">my_shell</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">granted</span><span·class="p">,</span><span·class="w"> |
| 149 | ······························</span><span·class="s">"You·got·the·write·lock·for·{my_tab,·key}"</span><span·class="p"·data-group-id=" | 149 | ······························</span><span·class="s">"You·got·the·write·lock·for·{my_tab,·key}"</span><span·class="p"·data-group-id="6027526414-14">)</span><span·class="p">,</span><span·class="w"> |
| 150 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id=" | 150 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id="6027526414-15">(</span><span·class="n">Collector</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">60</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">my_shell</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">do_commit</span><span·class="p">,</span><span·class="w"> |
| 151 | ······························</span><span·class="s">"Perform··transaction·commit"</span><span·class="p"·data-group-id=" | 151 | ······························</span><span·class="s">"Perform··transaction·commit"</span><span·class="p"·data-group-id="6027526414-15">)</span><span·class="p">,</span><span·class="w"> |
| 152 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id=" | 152 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id="6027526414-16">(</span><span·class="n">Collector</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">40</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">my_shell</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">mnesia_locker</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">release_tid</span><span·class="p">,</span><span·class="w"> |
| 153 | ······························</span><span·class="s">"Release·all·locks·for·transaction·4711"</span><span·class="p"·data-group-id=" | 153 | ······························</span><span·class="s">"Release·all·locks·for·transaction·4711"</span><span·class="p"·data-group-id="6027526414-16">)</span><span·class="p">,</span><span·class="w"> |
| 154 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id=" | 154 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id="6027526414-17">(</span><span·class="n">Collector</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">60</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">my_shell</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">mnesia_tm</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">delete_transaction</span><span·class="p">,</span><span·class="w"> |
| 155 | ······························</span><span·class="s">"End·of·outer·transaction"</span><span·class="p"·data-group-id=" | 155 | ······························</span><span·class="s">"End·of·outer·transaction"</span><span·class="p"·data-group-id="6027526414-17">)</span><span·class="p">,</span><span·class="w"> |
| 156 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id=" | 156 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id="6027526414-18">(</span><span·class="n">Collector</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">20</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">my_shell</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">end_outer</span><span·class="p">,</span><span·class="w"> |
| 157 | ······························</span><span·class="s">"Transaction·returned·{atomic,·ok}"</span><span·class="p"·data-group-id=" | 157 | ······························</span><span·class="s">"Transaction·returned·{atomic,·ok}"</span><span·class="p"·data-group-id="6027526414-18">)</span><span·class="p">,</span><span·class="w"> |
| 158 | ····</span><span·class="p"·data-group-id=" | 158 | ····</span><span·class="p"·data-group-id="6027526414-19">{</span><span·class="ss">collector</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Collector</span><span·class="p"·data-group-id="6027526414-19">}</span><span·class="p">.</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="w"> |
| 159 | </span><span·class="nf">mgr_actors</span><span·class="p"·data-group-id=" | 159 | </span><span·class="nf">mgr_actors</span><span·class="p"·data-group-id="8046469725-1">(</span><span·class="n">E</span><span·class="p"·data-group-id="8046469725-1">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_record</span><span·class="p"·data-group-id="8046469725-2">(</s[·...·truncated·by·diffoscope;·len:·146,·SHA:·ce9248fbacd5fc6cb1164b7b126e6af65074f075082ee05658d8015efec56a40·...·]-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 160 | ····</span><span·class="n">Actor</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 160 | ····</span><span·class="n">Actor</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="8046469725-3">(</span><span·class="n">A</span><span·class="p"·data-group-id="8046469725-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 161 | ···············</span><span·class="k">case</span><span·class="w">·</span><span·class="n">A</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> | 161 | ···············</span><span·class="k">case</span><span·class="w">·</span><span·class="n">A</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 162 | ···················</span><span·class="ss">mnesia_tm</span><span·class="w">·····</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">trans_mgr</span><span·class="p">;</span><span·class="w"> | 162 | ···················</span><span·class="ss">mnesia_tm</span><span·class="w">·····</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">trans_mgr</span><span·class="p">;</span><span·class="w"> |
| 163 | ···················</span><span·class="ss">mnesia_locker</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">lock_mgr</span><span·class="p">;</span><span·class="w"> | 163 | ···················</span><span·class="ss">mnesia_locker</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">lock_mgr</span><span·class="p">;</span><span·class="w"> |
| 164 | ···················</span><span·class="p">_</span><span·class="w">·············</span><span·class="p">-></span><span·class="w">·</span><span·class="n">A</span><span·class="w"> | 164 | ···················</span><span·class="p">_</span><span·class="w">·············</span><span·class="p">-></span><span·class="w">·</span><span·class="n">A</span><span·class="w"> |
| 165 | ···············</span><span·class="k">end</span><span·class="w"> | 165 | ···············</span><span·class="k">end</span><span·class="w"> |
| 166 | ············</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 166 | ············</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 167 | ····</span><span·class="p"·data-group-id=" | 167 | ····</span><span·class="p"·data-group-id="8046469725-4">{</span><span·class="ss">true</span><span·class="p">,</span><span·class="w">·</span><span·class="n">E</span><span·class="o">#</span><span·class="ss">event</span><span·class="p"·data-group-id="8046469725-5">{</span><span·class="ss">from</span>[·...·truncated·by·diffoscope;·len:·323,·SHA:·0eb7d80ab6d81b817f5141d1d9334a2963bf33d9432dc34ee25bd8fa335b1ce4·...·]-6">)</span><span·class="p">,</span><span·class="w"> |
| 168 | ···················</span><span·class="ss">to</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Actor</span><span·class="p"·data-group-id=" | 168 | ···················</span><span·class="ss">to</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Actor</span><span·class="p"·data-group-id="8046469725-7">(</span><span·class="n">E</span><span·class="o">#</span><span·class="ss">event</span><span·class="p">.</span><span·class="ss">to</span><span·class="p"·data-group-id="8046469725-7">)</span><span·class="p">,</span><span·class="w"> |
| 169 | ···················</span><span·class="ss">contents</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 169 | ···················</span><span·class="ss">contents</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="8046469725-8">[</span><span·class="p"·data-group-id="8046469725-9">{</span><span·class="ss">orig_from</span><span·class="p">,</span><span·class="w">·</span><span·class="n">E</span><span·class="o">#</span><span·class="ss">event</span><span·class="p">.</span[·...·truncated·by·diffoscope;·len:·70,·SHA:·a34cf49bbd23bac4c71a86189bbb09e0e88641c6ed4af76cbc3d94e7a2f25f3c·...·]-9">}</span><span·class="p">,</span><span·class="w"> |
| 170 | ·······························</span><span·class="p"·data-group-id=" | 170 | ·······························</span><span·class="p"·data-group-id="8046469725-10">{</span><span·class="ss">orig_to</span><span·class="p">,</span><span·class="w">···</span><span·class="n">E</span><span·class="o">#</span><span·class="ss">event</span><span·class="p">.</span><span·class="ss">to</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·16,·SHA:·f3eef60466ea07be7c1e38e331a3cf8b764f1106d2210d58bead4214f1c99aab·...·]-10">}</span><span·class="p">,</span><span·class="w"> |
| 171 | ·······························</span><span·class="p"·data-group-id=" | 171 | ·······························</span><span·class="p"·data-group-id="8046469725-11">{</span><span·class="ss">orig_contents</span><span·class="p">,</span><span·class="w">·</span><span·class="n">E</span><span·class="o">#</span><span·class="ss">event</span><span·class="p">.</span><span·class="ss">contents</span><span·class="p"[·...·truncated·by·diffoscope;·len:·186,·SHA:·7bbb19f334a1d85e3443531cae84dc17816720ae11258f5f1510769057703ff0·...·]-4">}</span><span·class="p">.</span></code></pre><p>If·you·invoke·the·<code·class="inline">et_demo:sim_trans()</code>·function,·a·<code·class="inline">Viewer</code>·window·will·pop·up |
| 172 | and·the·sequence·trace·will·be·almost·the·same·as·if·the·following·<code·class="inline">Mnesia</code> | 172 | and·the·sequence·trace·will·be·almost·the·same·as·if·the·following·<code·class="inline">Mnesia</code> |
| 173 | transaction·would·have·been·run:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">transaction</span><span·class="p"·data-group-id=" | 173 | transaction·would·have·been·run:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">transaction</span><span·class="p"·data-group-id="6774501200-1">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="6774501200-2">(</span><span·class="p"·data-group-id="6774501200-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nc">mnesia</[·...·truncated·by·diffoscope;·len:·2205,·SHA:·c45f02c720194d67bf046a847318de092421896cd10596d631758a109513a29b·...·]-6">]</span><span·class="w"> |
| 174 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V5</span><span·class="p">.</span><span·class="mf">7.4</span><span·class="w">··</span><span·class="p"·data-group-id=" | 174 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V5</span><span·class="p">.</span><span·class="mf">7.4</span><span·class="w">··</span><span·class="p"·data-group-id="2550255183-7">(</span><span·class="ss">abort</span><span·class="w">·</span><span·class="ss">with</span><span·class="w">·</span><span·class="err">^</span><span·class="n">G</span><span·class="p"·data-group-id="2550255183-7">)</span><span·class="gp·unselectable"> |
| 175 | 1>·</span><span·class="p"·data-group-id=" | 175 | 1>·</span><span·class="p"·data-group-id="2550255183-8">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Viewer</span><span·class="p"·data-group-id="2550255183-8">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·[·...·truncated·by·diffoscope;·len:·282,·SHA:·50d2e6fd83f6d3be86f9e367a5115f8271eee852d9cceb4b9eaf853f1f944226·...·]-9">)</span><span·class="p">.</span><span·class="w"> |
| 176 | </span><span·class="p"·data-group-id=" | 176 | </span><span·class="p"·data-group-id="2550255183-11">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.40</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">;</span><span·class="p"·data-group-i[·...·truncated·by·diffoscope;·len:·13,·SHA:·b7a173d9c03f84a30947f048cc147f43083ab7f7296f80a0fccf61b62962c62d·...·]-11">}</span><span·class="gp·unselectable"> |
| 177 | 2>·</span><span·class="nc">et_demo</span><span·class="p">:</span><span·class="nf">sim_trans</span><span·class="p"·data-group-id=" | 177 | 2>·</span><span·class="nc">et_demo</span><span·class="p">:</span><span·class="nf">sim_trans</span><span·class="p"·data-group-id="2550255183-12">(</span><span·class="p"·data-group-id="2550255183-12">)</span><span·class="p">.</span><span·class="w"> |
| 178 | </span><span·class="p"·data-group-id=" | 178 | </span><span·class="p"·data-group-id="2550255183-13">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="2550255183-14">{</span><span·class="ss">table_handle</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.45</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="mi">24596</span><span·class="p">,</span><span·class="ss">trace_ts</span><span·class="p">,</span><span·class="w"> |
| 179 | ·····</span><span·class="p">#</span><span·class="n">Fun</span><span·class="o"><</span><span·class="ss">et_collector</span><span·class="p">.</span><span·class="mf">0.62831470</span><span·class="o">></span><span·class="p"·data-group-id=" | 179 | ·····</span><span·class="p">#</span><span·class="n">Fun</span><span·class="o"><</span><span·class="ss">et_collector</span><span·class="p">.</span><span·class="mf">0.62831470</span><span·class="o">></span><span·class="p"·data-group-id="2550255183-14">}</span><span·class="p"·data-group-id="2550255183-13">}</span></code></pre><p><img·src="assets/sim_trans.png"·alt="A·simulated·Mnesia·transaction·which·writes·one·record"·title="A·simulated·Mnesia·transaction·which·writes·one·record"/></p><h2·id="some-convenient-functions-used-in-the-mnesia-transaction-example"·class="section-heading"> |
| 180 | ··<a·href="#some-convenient-functions-used-in-the-mnesia-transaction-example"·class="hover-link"> | 180 | ··<a·href="#some-convenient-functions-used-in-the-mnesia-transaction-example"·class="hover-link"> |
| 181 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 181 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 182 | ··</a> | 182 | ··</a> |
| 183 | ··<span·class="text">Some·convenient·functions·used·in·the·Mnesia·transaction·example</span> | 183 | ··<span·class="text">Some·convenient·functions·used·in·the·Mnesia·transaction·example</span> |
| 184 | </h2> | 184 | </h2> |
| 185 | <p>The·<code·class="inline">module_as_actor</code>·filter·converts·the·<code·class="inline">Event·Records</code>·so·the·module·names | 185 | <p>The·<code·class="inline">module_as_actor</code>·filter·converts·the·<code·class="inline">Event·Records</code>·so·the·module·names |
| 186 | becomes·actors·and·the·invoked·functions·becomes·labels.·If·the·information | 186 | becomes·actors·and·the·invoked·functions·becomes·labels.·If·the·information |
| 187 | about·who·the·caller·was·it·will·be·displayed·as·an·arrow·directed·from·the | 187 | about·who·the·caller·was·it·will·be·displayed·as·an·arrow·directed·from·the |
| 188 | caller·to·the·callee.·The·<code·class="inline">[{message,·{caller}},·{return_trace}]</code>·options·to | 188 | caller·to·the·callee.·The·<code·class="inline">[{message,·{caller}},·{return_trace}]</code>·options·to |
| 189 | <a·href="../../../../lib/runtime_tools-2.1.1/doc/html/dbg.html#tpl/2"><code·class="inline">dbg:tpl/2</code></a>·function·will·imply·the·necessary·information·in·the·Erlang·traces. | 189 | <a·href="../../../../lib/runtime_tools-2.1.1/doc/html/dbg.html#tpl/2"><code·class="inline">dbg:tpl/2</code></a>·function·will·imply·the·necessary·information·in·the·Erlang·traces. |
| 190 | Here·follows·the·<code·class="inline">module_as_actor</code>·filter:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w"> | 190 | Here·follows·the·<code·class="inline">module_as_actor</code>·filter:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w"> |
| 191 | </span><span·class="nf">module_as_actor</span><span·class="p"·data-group-id=" | 191 | </span><span·class="nf">module_as_actor</span><span·class="p"·data-group-id="4799413663-1">(</span><span·class="n">E</span><span·class="p"·data-group-id="4799413663-1">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_record</span><span·class="p"·data-group-id="4799413663-2">(</s[·...·truncated·by·diffoscope;·len:·146,·SHA:·703d6e4beeb1393da04957e1c94dc40dee55f4523f679054e2a10b36d93a0274·...·]-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 192 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">keysearch</span><span·class="p"·data-group-id=" | 192 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">keysearch</span><span·class="p"·data-group-id="4799413663-3">(</span><span·class="ss">mfa</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">E</span><span·class="o">#</span><span·class="ss">event</span><span·cla[·...·truncated·by·diffoscope;·len:·88,·SHA:·89912f0f7b53f16badba895a3e561f8586f6685d49c0537af411e2008dacac67·...·]-3">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 193 | ········</span><span·class="p"·data-group-id=" | 193 | ········</span><span·class="p"·data-group-id="4799413663-4">{</span><span·class="ss">value</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4799413663-5">{</span><span·class="ss">mfa</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·363,·SHA:·3cde260504601c35a7ca38b2d721f52eecfeea25be284e334274f26703619be8·...·]-4">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 194 | ············</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">keysearch</span><span·class="p"·data-group-id=" | 194 | ············</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">keysearch</span><span·class="p"·data-group-id="4799413663-7">(</span><span·class="ss">pam_result</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">E</span><span·class="o">#</span><span·class="ss">event</span><s[·...·truncated·by·diffoscope;·len:·95,·SHA:·a6a57e66db910fcaf02cee873c3c75d06f3480a1bf2de580b7c107ac7eb6343e·...·]-7">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 195 | ················</span><span·class="p"·data-group-id=" | 195 | ················</span><span·class="p"·data-group-id="4799413663-8">{</span><span·class="ss">value</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4799413663-9">{</span><span·class="ss">pam_result</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-g[·...·truncated·by·diffoscope;·len:·399,·SHA:·9876f9eadeb74617f56253fd0820c3a0d1160b7f7eaa46eb253189e8ee8f438d·...·]-8">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 196 | ····················</span><span·class="p"·data-group-id=" | 196 | ····················</span><span·class="p"·data-group-id="4799413663-11">{</span><span·class="ss">true</span><span·class="p">,</span><span·class="w">·</span><span·class="n">E</span><span·class="o">#</span><span·class="ss">event</span><span·class="p"·data-group-id="4799413663-12">{</span><span·class="ss">label</sp[·...·truncated·by·diffoscope;·len:·537,·SHA:·5244448cb02bf7622eed0e3fbedc6cbe7b2d2d67a8f3b40f4e5d5b0f5bd430e2·...·]-11">}</span><span·class="p">;</span><span·class="w"> |
| 197 | ················</span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 197 | ················</span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 198 | ····················</span><span·class="p"·data-group-id=" | 198 | ····················</span><span·class="p"·data-group-id="4799413663-13">{</span><span·class="ss">true</span><span·class="p">,</span><span·class="w">·</span><span·class="n">E</span><span·class="o">#</span><span·class="ss">event</span><span·class="p"·data-group-id="4799413663-14">{</span><span·class="ss">label</sp[·...·truncated·by·diffoscope;·len:·536,·SHA:·20fb737af67e9debb98d51578f16f9ee7b693fe41d216446b83261a5c0d63405·...·]-13">}</span><span·class="w"> |
| 199 | ············</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> | 199 | ············</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> |
| 200 | ········</span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 200 | ········</span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 201 | ············</span><span·class="ss">false</span><span·class="w"> | 201 | ············</span><span·class="ss">false</span><span·class="w"> |
| 202 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>The·<code·class="inline">plain_process_info</code>·filter·does·not·alter·the·<code·class="inline">Event·Records</code>.·It·merely | 202 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>The·<code·class="inline">plain_process_info</code>·filter·does·not·alter·the·<code·class="inline">Event·Records</code>.·It·merely |
| 203 | ensures·that·the·event·not·related·to·processes·are·skipped:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w"> | 203 | ensures·that·the·event·not·related·to·processes·are·skipped:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w"> |
| 204 | </span><span·class="nf">plain_process_info</span><span·class="p"·data-group-id=" | 204 | </span><span·class="nf">plain_process_info</span><span·class="p"·data-group-id="7258693854-1">(</span><span·class="n">E</span><span·class="p"·data-group-id="7258693854-1">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_record</span><span·class="p"·data-group-id="7258693854-2">(</s[·...·truncated·by·diffoscope;·len:·146,·SHA:·3f4bdeaeab0ef541b74345e88016f6a3ee3724e78981f1f686ffa2e7bc5bfacf·...·]-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 205 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="n">E</span><span·class="o">#</span><span·class="ss">event</span><span·class="p">.</span><span·class="ss">label</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> | 205 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="n">E</span><span·class="o">#</span><span·class="ss">event</span><span·class="p">.</span><span·class="ss">label</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 206 | ········</span><span·class="nb">send</span><span·class="w">··························</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> | 206 | ········</span><span·class="nb">send</span><span·class="w">··························</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> |
| 207 | ········</span><span·class="ss">send_to_non_existing_process</span><span·class="w">··</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> | 207 | ········</span><span·class="ss">send_to_non_existing_process</span><span·class="w">··</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> |
| 208 | ········</span><span·class="ss">'receive'</span><span·class="w">·····················</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> | 208 | ········</span><span·class="ss">'receive'</span><span·class="w">·····················</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> |
| 209 | ········</span><span·class="nb">spawn</span><span·class="w">·························</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> | 209 | ········</span><span·class="nb">spawn</span><span·class="w">·························</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> |
| 210 | ········</span><span·class="nb">exit</span><span·class="w">··························</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> | 210 | ········</span><span·class="nb">exit</span><span·class="w">··························</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> |
| 211 | ········</span><span·class="nb">link</span><span·class="w">··························</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> | 211 | ········</span><span·class="nb">link</span><span·class="w">··························</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> |
| 212 | ········</span><span·class="nb">unlink</span><span·class="w">························</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> | 212 | ········</span><span·class="nb">unlink</span><span·class="w">························</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> |
| 213 | ········</span><span·class="ss">getting_linked</span><span·class="w">················</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> | 213 | ········</span><span·class="ss">getting_linked</span><span·class="w">················</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> |
| 214 | ········</span><span·class="p"·data-group-id=" | 214 | ········</span><span·class="p"·data-group-id="7258693854-3">{</span><span·class="ss">seq_send</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">Label</span><span·class="p"·data-group-id="7258693854-3">}</span><span·class="w">············</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> |
| 215 | ········</span><span·class="p"·data-group-id=" | 215 | ········</span><span·class="p"·data-group-id="7258693854-4">{</span><span·class="ss">seq_receive</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">Label</span><span·class="p"·data-group-id="7258693854-4">}</span><span·class="w">·········</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> |
| 216 | ········</span><span·class="p"·data-group-id=" | 216 | ········</span><span·class="p"·data-group-id="7258693854-5">{</span><span·class="ss">seq_print</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">Label</span><span·class="p"·data-group-id="7258693854-5">}</span><span·class="w">···········</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> |
| 217 | ········</span><span·class="p"·data-group-id=" | 217 | ········</span><span·class="p"·data-group-id="7258693854-6">{</span><span·class="ss">drop</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">N</span><span·class="p"·data-group-id="7258693854-6">}</span><span·class="w">····················</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> |
| 218 | ········</span><span·class="p">_</span><span·class="w">·····························</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">false</span><span·class="w"> | 218 | ········</span><span·class="p">_</span><span·class="w">·····························</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">false</span><span·class="w"> |
| 219 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>The·<code·class="inline">plain_process_info_nolink</code>·filter·does·not·alter·the·<code·class="inline">Event·Records</code>.·It·do | 219 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>The·<code·class="inline">plain_process_info_nolink</code>·filter·does·not·alter·the·<code·class="inline">Event·Records</code>.·It·do |
| 220 | makes·use·of·the·<code·class="inline">plain_process_info</code>·,·but·do·also·ensure·that·the·process·info | 220 | makes·use·of·the·<code·class="inline">plain_process_info</code>·,·but·do·also·ensure·that·the·process·info |
| 221 | related·to·linking·and·unlinking·is·skipped:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w"> | 221 | related·to·linking·and·unlinking·is·skipped:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w"> |
| 222 | </span><span·class="nf">plain_process_info_nolink</span><span·class="p"·data-group-id=" | 222 | </span><span·class="nf">plain_process_info_nolink</span><span·class="p"·data-group-id="8221926047-1">(</span><span·class="n">E</span><span·class="p"·data-group-id="8221926047-1">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_record</span><span·class="p"·data-group-id="8221926047-2">(</s[·...·truncated·by·diffoscope;·len:·146,·SHA:·b4e11f009f1b33888d5fa556a6f5b2d931d21b1d90615e2539c44eba961920da·...·]-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 223 | ····</span><span·class="p"·data-group-id=" | 223 | ····</span><span·class="p"·data-group-id="8221926047-3">(</span><span·class="n">E</span><span·class="o">#</span><span·class="ss">event</span><span·class="p">.</span><span·class="ss">label</span><span·class="w">·</span><span·class="o">/=</span><span·class="w">·</span><span·class="nb">link</span><sp[·...·truncated·by·diffoscope;·len:·38,·SHA:·fffea3451630b1ce5632e2c1fa3594b93b7b41c4a511f7b1f809a43415db14d7·...·]-3">)</span><span·class="w">·</span><span·class="nf">and</span><span·class="w"> |
| 224 | ····</span><span·class="p"·data-group-id=" | 224 | ····</span><span·class="p"·data-group-id="8221926047-4">(</span><span·class="n">E</span><span·class="o">#</span><span·class="ss">event</span><span·class="p">.</span><span·class="ss">label</span><span·class="w">·</span><span·class="o">/=</span><span·class="w">·</span><span·class="nb">unlink</span><[·...·truncated·by·diffoscope;·len:·40,·SHA:·e21b472ac7e9192684aa979366236c4fd66e7232888eea3a724cc207b808034f·...·]-4">)</span><span·class="w">·</span><span·class="nf">and</span><span·class="w"> |
| 225 | ····</span><span·class="p"·data-group-id=" | 225 | ····</span><span·class="p"·data-group-id="8221926047-5">(</span><span·class="n">E</span><span·class="o">#</span><span·class="ss">event</span><span·class="p">.</span><span·class="ss">label</span><span·class="w">·</span><span·class="o">/=</span><span·class="w">·</span><span·class="ss">getting_linked[·...·truncated·by·diffoscope;·len:·48,·SHA:·338ba496aab7686a885227c34b71ffb413383f7e295b0349a453855c69b3172f·...·]-5">)</span><span·class="w">·</span><span·class="ow">and</span><span·class="w"> |
| 226 | ····</span><span·class="nf">plain_process_info</span><span·class="p"·data-group-id=" | 226 | ····</span><span·class="nf">plain_process_info</span><span·class="p"·data-group-id="8221926047-6">(</span><span·class="n">E</span><span·class="p"·data-group-id="8221926047-6">)</span><span·class="p">.</span></code></pre><p>In·order·to·simplify·the·startup·of·an·<code·class="inline">et_viewer</code>·process·with·the·filters |
| 227 | mentioned·above,·plus·some·others·(that·also·are·found·in | 227 | mentioned·above,·plus·some·others·(that·also·are·found·in |
| 228 | <code·class="inline">et/examples/et_demo.erl</code>·src/et_collector.erl·the·<code·class="inline">et_demo:start/0,1</code>·functions | 228 | <code·class="inline">et/examples/et_demo.erl</code>·src/et_collector.erl·the·<code·class="inline">et_demo:start/0,1</code>·functions |
| 229 | can·be·used:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w"> | 229 | can·be·used:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w"> |
| 230 | </span><span·class="nf">start</span><span·class="p"·data-group-id=" | 230 | </span><span·class="nf">start</span><span·class="p"·data-group-id="9662116673-1">(</span><span·class="p"·data-group-id="9662116673-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 231 | ····</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 231 | ····</span><span·class="nf">start</span><span·class="p"·data-group-id="9662116673-2">(</span><span·class="p"·data-group-id="9662116673-3">[</span><span·class="p"·data-group-id="9662116673-3">]</span><span·class="p"·data-group-id="9662116673-2">)</span><span·class="p">.</span><span·class="w"> |
| 232 | </span><span·class="nf">start</span><span·class="p"·data-group-id=" | 232 | </span><span·class="nf">start</span><span·class="p"·data-group-id="9662116673-4">(</span><span·class="n">ExtraOptions</span><span·class="p"·data-group-id="9662116673-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 233 | ····</span><span·class="n">Options</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 233 | ····</span><span·class="n">Options</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="9662116673-5">[</span><span·class="p"·data-group-id="9662116673-6">{</span><span·class="ss">trace_global</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">true</span><span·class="p"·data-group-id="9662116673-6">}</span><span·class="p">,</span><span·class="w"> |
| 234 | ···············</span><span·class="p"·data-group-id=" | 234 | ···············</span><span·class="p"·data-group-id="9662116673-7">{</span><span·class="ss">parent_pid</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">undefined</span><span·class="p"·data-group-id="9662116673-7">}</span><span·class="p">,</span><span·class="w"> |
| 235 | ···············</span><span·class="p"·data-group-id=" | 235 | ···············</span><span·class="p"·data-group-id="9662116673-8">{</span><span·class="ss">max_actors</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">infinity</span><span·class="p"·data-group-id="9662116673-8">}</span><span·class="p">,</span><span·class="w"> |
| 236 | ···············</span><span·class="p"·data-group-id=" | 236 | ···············</span><span·class="p"·data-group-id="9662116673-9">{</span><span·class="ss">max_events</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1000</span><span·class="p"·data-group-id="9662116673-9">}</span><span·class="p">,</span><span·class="w"> |
| 237 | ···············</span><span·class="p"·data-group-id=" | 237 | ···············</span><span·class="p"·data-group-id="9662116673-10">{</span><span·class="ss">active_filter</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">module_as_actor</span><span·class="p"·data-group-id="9662116673-10">}</span><span·class="p"·data-group-id="9662116673-5">]</span><span·class="p">,</span><span·class="w"> |
| 238 | ····</span><span·class="nc">et_viewer</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 238 | ····</span><span·class="nc">et_viewer</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id="9662116673-11">(</span><span·class="nf">filters</span><span·class="p"·data-group-id="9662116673-12">(</span><span·class="p"·data-group-id="9662116673-12">)</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="n">Optio[·...·truncated·by·diffoscope;·len:·158,·SHA:·03f133876f9879f7f0e9145af5882bcf111babf69d07db74e9cadaf50b26bb81·...·]-11">)</span><span·class="p">.</span></code></pre><p>A·simple·one-liner·starts·the·tool:</p><pre><code·class="text">··········erl·-pa·../examples·-s·et_demo</code></pre><p>The·filters·are·included·by·the·following·parameters:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w"> |
| 239 | </span><span·class="nf">filters</span><span·class="p"·data-group-id=" | 239 | </span><span·class="nf">filters</span><span·class="p"·data-group-id="8418758149-1">(</span><span·class="p"·data-group-id="8418758149-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 240 | ····</span><span·class="p"·data-group-id=" | 240 | ····</span><span·class="p"·data-group-id="8418758149-2">[</span><span·class="p"·data-group-id="8418758149-3">{</span><span·class="ss">dict_insert</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8418758149-4">{</span><span·class="ss">filter</span><span·class="p"[·...·truncated·by·diffoscope;·len:·113,·SHA:·8730cb3bb389ee7454dfac7ef93b6c60cf90482850191d9edba73fc2ca0b06a0·...·]-4">}</span><span·class="p">,</span><span·class="w"> |
| 241 | ···················</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">module_as_actor</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id=" | 241 | ···················</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">module_as_actor</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id="8418758149-3">}</span><span·class="p">,</span><span·class="w"> |
| 242 | ·····</span><span·class="p"·data-group-id=" | 242 | ·····</span><span·class="p"·data-group-id="8418758149-5">{</span><span·class="ss">dict_insert</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8418758149-6">{</span><span·class="ss">filter</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">pla[·...·truncated·by·diffoscope;·len:·63,·SHA:·45b2c11b7064a7fe7733cea0cbfbf18e349c82c380d6d8262269bd8007e9ec33·...·]-6">}</span><span·class="p">,</span><span·class="w"> |
| 243 | ···················</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">plain_process_info</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id=" | 243 | ···················</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">plain_process_info</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id="8418758149-5">}</span><span·class="p">,</span><span·class="w"> |
| 244 | ·····</span><span·class="p"·data-group-id=" | 244 | ·····</span><span·class="p"·data-group-id="8418758149-7">{</span><span·class="ss">dict_insert</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8418758149-8">{</span><span·class="ss">filter</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">pla[·...·truncated·by·diffoscope;·len:·70,·SHA:·783727be6d5dfd77c692e84bb6b7e6c2ab483deb6a0a3f59bc06e0e79e9c66d4·...·]-8">}</span><span·class="p">,</span><span·class="w"> |
| 245 | ···················</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">plain_process_info_nolink</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id=" | 245 | ···················</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">plain_process_info_nolink</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id="8418758149-7">}</span><span·class="p">,</span><span·class="w"> |
| 246 | ·····</span><span·class="p"·data-group-id=" | 246 | ·····</span><span·class="p"·data-group-id="8418758149-9">{</span><span·class="ss">dict_insert</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8418758149-10">{</span><span·class="ss">filter</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">na[·...·truncated·by·diffoscope;·len:·64,·SHA:·91023946cc022c8a9945496c8a0a207159976690f7e8f3ad0518d95b84e18837·...·]-10">}</span><span·class="p">,</span><span·class="w"> |
| 247 | ···················</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">named_process_info</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id=" | 247 | ···················</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">named_process_info</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id="8418758149-9">}</span><span·class="p">,</span><span·class="w"> |
| 248 | ·····</span><span·class="p"·data-group-id=" | 248 | ·····</span><span·class="p"·data-group-id="8418758149-11">{</span><span·class="ss">dict_insert</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8418758149-12">{</span><span·class="ss">filter</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">n[·...·truncated·by·diffoscope;·len:·72,·SHA:·d4c1408d69df7bf85cbcd885f82da4e4c970f7c66ff07f5f0c317170a058ec11·...·]-12">}</span><span·class="p">,</span><span·class="w"> |
| 249 | ···················</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">named_process_info_nolink</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id=" | 249 | ···················</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">named_process_info_nolink</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id="8418758149-11">}</span><span·class="p">,</span><span·class="w"> |
| 250 | ·····</span><span·class="p"·data-group-id=" | 250 | ·····</span><span·class="p"·data-group-id="8418758149-13">{</span><span·class="ss">dict_insert</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8418758149-14">{</span><span·class="ss">filter</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">n[·...·truncated·by·diffoscope;·len:·64,·SHA:·c097f4ca44ce50812000081faccbc09f236b7875537048e03ff4667a97e462c9·...·]-14">}</span><span·class="p">,</span><span·class="w"> |
| 251 | ···················</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">node_process_info</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id=" | 251 | ···················</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">node_process_info</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id="8418758149-13">}</span><span·class="p">,</span><span·class="w"> |
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| 129 | ··<a·href="#visualizing-message-sequence-charts"·class="hover-link"> | 129 | ··<a·href="#visualizing-message-sequence-charts"·class="hover-link"> |
| 130 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 130 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 131 | ··</a> | 131 | ··</a> |
| 132 | ··<span·class="text">Visualizing·Message·Sequence·Charts</span> | 132 | ··<span·class="text">Visualizing·Message·Sequence·Charts</span> |
| 133 | </h2> | 133 | </h2> |
| 134 | <p>The·easiest·way·of·using·<code·class="inline">ET</code>,·is·to·just·use·it·as·a·graphical·tool·for | 134 | <p>The·easiest·way·of·using·<code·class="inline">ET</code>,·is·to·just·use·it·as·a·graphical·tool·for |
| 135 | displaying·message·sequence·charts.·In·order·to·do·that·you·need·to·first·start | 135 | displaying·message·sequence·charts.·In·order·to·do·that·you·need·to·first·start |
| 136 | a·<code·class="inline">Viewer</code>·(which·by·default·starts·a·<code·class="inline">Collector</code>):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">······</span><span·class="p"·data-group-id=" | 136 | a·<code·class="inline">Viewer</code>·(which·by·default·starts·a·<code·class="inline">Collector</code>):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">······</span><span·class="p"·data-group-id="6275025966-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ViewerPid</span><span·class="p"·data-group-id="6275025966-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><sp[·...·truncated·by·diffoscope;·len:·489,·SHA:·fe035a9c6d24112cadf0d6000c24a52bb40a764b7fc5e0aa9cae0ccf58f6b837·...·]-2">)</span><span·class="p">,</span><span·class="w"> |
| 137 | ······</span><span·class="n">CollectorPid</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">et_viewer</span><span·class="p">:</span><span·class="nf">get_collector_pid</span><span·class="p"·data-group-id=" | 137 | ······</span><span·class="n">CollectorPid</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">et_viewer</span><span·class="p">:</span><span·class="nf">get_collector_pid</span><span·class="p"·data-group-id="6275025966-5">(</span><span·class="n">ViewerPid</span><span·class="p"·data-group-id="6275025966-5">)</span><span·class="p">.</span></code></pre><p><a·href=""·id="report_event"></a></p><p>Then·you·send·events·to·the·<code·class="inline">Collector</code>·with·the·function |
| 138 | <a·href="et_collector.html#report_event/6"><code·class="inline">et_collector:report_event/6</code></a>·like·this:</p><pre><code·class="text">······et_collector:report_event(CollectorPid,85,from,to,message,extra_stuff).</code></pre><p>The·<code·class="inline">Viewer</code>·will·automatically·pull·events·from·the·<code·class="inline">Collector</code>·and·display | 138 | <a·href="et_collector.html#report_event/6"><code·class="inline">et_collector:report_event/6</code></a>·like·this:</p><pre><code·class="text">······et_collector:report_event(CollectorPid,85,from,to,message,extra_stuff).</code></pre><p>The·<code·class="inline">Viewer</code>·will·automatically·pull·events·from·the·<code·class="inline">Collector</code>·and·display |
| 139 | them·on·the·screen.</p><p>The·number·(in·this·case·85)·is·an·integer·from·1·to·100·that·specifies·the | 139 | them·on·the·screen.</p><p>The·number·(in·this·case·85)·is·an·integer·from·1·to·100·that·specifies·the |
| 140 | "detail·level"·of·the·message.·The·higher·the·number,·the·more·important·it·is. | 140 | "detail·level"·of·the·message.·The·higher·the·number,·the·more·important·it·is. |
| 141 | This·provides·a·crude·form·of·priority·filtering.</p><p>The·<code·class="inline">from</code>,·<code·class="inline">to</code>,·and·<code·class="inline">message</code>·parameters·are·exactly·what·they·sound·like. | 141 | This·provides·a·crude·form·of·priority·filtering.</p><p>The·<code·class="inline">from</code>,·<code·class="inline">to</code>,·and·<code·class="inline">message</code>·parameters·are·exactly·what·they·sound·like. |
| 142 | <code·class="inline">from</code>·and·<code·class="inline">to</code>·are·visualized·in·the·<code·class="inline">Viewer</code>·as·"lifelines",·with·the·message | 142 | <code·class="inline">from</code>·and·<code·class="inline">to</code>·are·visualized·in·the·<code·class="inline">Viewer</code>·as·"lifelines",·with·the·message |
| 143 | passing·from·one·to·the·other.·If·<code·class="inline">from</code>·and·<code·class="inline">to</code>·are·the·same·value,·then·it·is | 143 | passing·from·one·to·the·other.·If·<code·class="inline">from</code>·and·<code·class="inline">to</code>·are·the·same·value,·then·it·is |
| 144 | displayed·next·to·the·lifeline·as·an·"action".·The·<code·class="inline">extra_stuff</code>value·is·simply | 144 | displayed·next·to·the·lifeline·as·an·"action".·The·<code·class="inline">extra_stuff</code>value·is·simply |
| 145 | data·that·you·can·attach·that·will·be·displayed·when·someone·actually·clicks·on | 145 | data·that·you·can·attach·that·will·be·displayed·when·someone·actually·clicks·on |
| 146 | the·action·or·message·in·the·<code·class="inline">Viewer</code>·window.</p><p>The·module·<code·class="inline">et/examples/et_display_demo.erl</code>·illustrates·how·it·can·be·used:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w"> | 146 | the·action·or·message·in·the·<code·class="inline">Viewer</code>·window.</p><p>The·module·<code·class="inline">et/examples/et_display_demo.erl</code>·illustrates·how·it·can·be·used:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w"> |
| 147 | </span><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 147 | </span><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="6841769747-1">(</span><span·class="ss">et_display_demo</span><span·class="p"·data-group-id="6841769747-1">)</span><span·class="p">.</span><span·class="w"> |
| 148 | </span><span·class="w"> | 148 | </span><span·class="w"> |
| 149 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 149 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="6841769747-2">(</span><span·class="p"·data-group-id="6841769747-3">[</span><span·class="ss">test</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data-group-id="6841769747-3">]</span><span·class="p"·data-group-id="6841769747-2">)</span><span·class="p">.</span><span·class="w"> |
| 150 | </span><span·class="nf">test</span><span·class="p"·data-group-id=" | 150 | </span><span·class="nf">test</span><span·class="p"·data-group-id="6841769747-4">(</span><span·class="p"·data-group-id="6841769747-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 151 | ····</span><span·class="p"·data-group-id=" | 151 | ····</span><span·class="p"·data-group-id="6841769747-5">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Viewer</span><span·class="p"·data-group-id="6841769747-5">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·[·...·truncated·by·diffoscope;·len:·724,·SHA:·74da9ea9f9a5b95e420ed00e6273e98febd2fbc457e65195c0ec1dd7c9567044·...·]-6">)</span><span·class="p">,</span><span·class="w"> |
| 152 | ····</span><span·class="n">Drink</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 152 | ····</span><span·class="n">Drink</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6841769747-10">{</span><span·class="ss">drink</span><span·class="p">,</span><span·class="ss">iced_chai_latte</span><span·class="p"·data-group-id="6841769747-10">}</span><span·class="p">,</span><span·class="w"> |
| 153 | ····</span><span·class="n">Size</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 153 | ····</span><span·class="n">Size</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6841769747-11">{</span><span·class="nb">size</span><span·class="p">,</span><span·class="ss">grande</span><span·class="p"·data-group-id="6841769747-11">}</span><span·class="p">,</span><span·class="w"> |
| 154 | ····</span><span·class="n">Milk</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 154 | ····</span><span·class="n">Milk</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6841769747-12">{</span><span·class="ss">milk</span><span·class="p">,</span><span·class="ss">whole</span><span·class="p"·data-group-id="6841769747-12">}</span><span·class="p">,</span><span·class="w"> |
| 155 | ····</span><span·class="n">Flavor</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 155 | ····</span><span·class="n">Flavor</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6841769747-13">{</span><span·class="ss">flavor</span><span·class="p">,</span><span·class="ss">vanilla</span><span·class="p"·data-group-id="6841769747-13">}</span><span·class="p">,</span><span·class="w"> |
| 156 | ····</span><span·class="n">C</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">et_viewer</span><span·class="p">:</span><span·class="nf">get_collector_pid</span><span·class="p"·data-group-id=" | 156 | ····</span><span·class="n">C</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">et_viewer</span><span·class="p">:</span><span·class="nf">get_collector_pid</span><span·class="p"·data-group-id="6841769747-14">(</span><span·class="n">Viewer</span><span·class="p"·data-group-id="6841769747-14">)</span><span·class="p">,</span><span·class="w"> |
| 157 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id=" | 157 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id="6841769747-15">(</span><span·class="n">C</span><span·class="p">,</span><span·class="mi">99</span><span·class="p">,</span><span·class="ss">customer</span><span·class="p">,</span><span·class="ss">barrista1</span><span·class="p">,</span><span·class="ss">place[·...·truncated·by·diffoscope;·len:·369,·SHA:·3adfc5c00bc3fa8ff87009dae6e4c6bd51bdee45800755cdbb441407300cfc88·...·]-15">)</span><span·class="p">,</span><span·class="w"> |
| 158 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id=" | 158 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id="6841769747-17">(</span><span·class="n">C</span><span·class="p">,</span><span·class="mi">80</span><span·class="p">,</span><span·class="ss">barrista1</span><span·class="p">,</span><span·class="nb">register</span><span·class="p">,</span><span·class="ss">enter[·...·truncated·by·diffoscope;·len:·318,·SHA:·0089be3f103839a46e70267ec6d391a5ebfe996f281731cb4fb634a1818b83b4·...·]-17">)</span><span·class="p">,</span><span·class="w"> |
| 159 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id=" | 159 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id="6841769747-19">(</span><span·class="n">C</span><span·class="p">,</span><span·class="mi">80</span><span·class="p">,</span><span·class="nb">register</span><span·class="p">,</span><span·class="ss">barrista1</span><span·class="p">,</span><span·class="ss">give_[·...·truncated·by·diffoscope;·len:·114,·SHA:·fcf2fd603a5eb476cef80df7040cdf3c2c491642a8d80209aa354b0acc990d45·...·]-19">)</span><span·class="p">,</span><span·class="w"> |
| 160 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id=" | 160 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id="6841769747-20">(</span><span·class="n">C</span><span·class="p">,</span><span·class="mi">80</span><span·class="p">,</span><span·class="ss">barrista1</span><span·class="p">,</span><span·class="ss">barrista1</span><span·class="p">,</span><span·class="ss">get_[·...·truncated·by·diffoscope;·len:·262,·SHA:·d248a07b4b7579712c950c820904824507de0eef16ebce288e1e4c38b0ac40a5·...·]-20">)</span><span·class="p">,</span><span·class="w"> |
| 161 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id=" | 161 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id="6841769747-22">(</span><span·class="n">C</span><span·class="p">,</span><span·class="mi">80</span><span·class="p">,</span><span·class="ss">barrista1</span><span·class="p">,</span><span·class="ss">barrista2</span><span·class="p">,</span><span·class="ss">give[·...·truncated·by·diffoscope;·len:·184,·SHA:·f40f61b6870c8678855bfe9f570c0b229cde6b3c9f31933bd141105fe8bec6ea·...·]-22">)</span><span·class="p">,</span><span·class="w"> |
| 162 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id=" | 162 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id="6841769747-24">(</span><span·class="n">C</span><span·class="p">,</span><span·class="mi">90</span><span·class="p">,</span><span·class="ss">barrista1</span><span·class="p">,</span><span·class="ss">customer</span><span·class="p">,</span><span·class="ss">reque[·...·truncated·by·diffoscope;·len:·117,·SHA:·cb6a9f70513def306863d85fbe0687a3c73bf199e16101f38620854d942b8f7f·...·]-24">)</span><span·class="p">,</span><span·class="w"> |
| 163 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id=" | 163 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id="6841769747-25">(</span><span·class="n">C</span><span·class="p">,</span><span·class="mi">90</span><span·class="p">,</span><span·class="ss">customer</span><span·class="p">,</span><span·class="ss">barrista1</span><span·class="p">,</span><span·class="ss">pay_m[·...·truncated·by·diffoscope;·len:·113,·SHA:·b9b922bd7609562c85375307b17ca70e7c4fac94ef3a9754f59dc49e10e3fed8·...·]-25">)</span><span·class="p">,</span><span·class="w"> |
| 164 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id=" | 164 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id="6841769747-26">(</span><span·class="n">C</span><span·class="p">,</span><span·class="mi">80</span><span·class="p">,</span><span·class="ss">barrista2</span><span·class="p">,</span><span·class="ss">barrista2</span><span·class="p">,</span><span·class="ss">get_[·...·truncated·by·diffoscope;·len:·188,·SHA:·e8b58f3837d89ecdf40aaf66f74eebff173af83179839c86288ae79d34b53aa1·...·]-26">)</span><span·class="p">,</span><span·class="w"> |
| 165 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id=" | 165 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id="6841769747-28">(</span><span·class="n">C</span><span·class="p">,</span><span·class="mi">80</span><span·class="p">,</span><span·class="ss">barrista2</span><span·class="p">,</span><span·class="ss">barrista2</span><span·class="p">,</span><span·class="ss">add_[·...·truncated·by·diffoscope;·len:·215,·SHA:·540df04e5b8823bb698c9d0bc1191bb0c9a8f2dffff8f1639c3ca1e52c44d067·...·]-28">)</span><span·class="p">,</span><span·class="w"> |
| 166 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id=" | 166 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id="6841769747-30">(</span><span·class="n">C</span><span·class="p">,</span><span·class="mi">80</span><span·class="p">,</span><span·class="ss">barrista2</span><span·class="p">,</span><span·class="ss">barrista2</span><span·class="p">,</span><span·class="ss">add_[·...·truncated·by·diffoscope;·len:·211,·SHA:·61e25f1bc3bc7ba88c8ffa1a3d4c860a2fa0b16b842aeb945e7f747a056023d6·...·]-30">)</span><span·class="p">,</span><span·class="w"> |
| 167 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id=" | 167 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id="6841769747-32">(</span><span·class="n">C</span><span·class="p">,</span><span·class="mi">80</span><span·class="p">,</span><span·class="ss">barrista2</span><span·class="p">,</span><span·class="ss">barrista2</span><span·class="p">,</span><span·class="ss">add_[·...·truncated·by·diffoscope;·len:·183,·SHA:·162de4db49f655ecc4e6c19aeca5bbb9cd7b67b9ff4f92e9fef2d2c904bf0f01·...·]-32">)</span><span·class="p">,</span><span·class="w"> |
| 168 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id=" | 168 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id="6841769747-34">(</span><span·class="n">C</span><span·class="p">,</span><span·class="mi">80</span><span·class="p">,</span><span·class="ss">barrista2</span><span·class="p">,</span><span·class="ss">barrista2</span><span·class="p">,</span><span·class="ss">swir[·...·truncated·by·diffoscope;·len:·181,·SHA:·c8abc73832f102bffb4001cf181d4a2684a6fab06235626cbc275626837795c4·...·]-34">)</span><span·class="p">,</span><span·class="w"> |
| 169 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id=" | 169 | ····</span><span·class="nc">et_collector</span><span·class="p">:</span><span·class="nf">report_event</span><span·class="p"·data-group-id="6841769747-36">(</span><span·class="n">C</span><span·class="p">,</span><span·class="mi">80</span><span·class="p">,</span><span·class="ss">barrista2</span><span·class="p">,</span><span·class="ss">customer</span><span·class="p">,</span><span·class="ss">give_[·...·truncated·by·diffoscope;·len:·273,·SHA:·1a4330388fb6d2bfcd64018874f6a458647548c8f135f432d51a5655b91d7f00·...·]-36">)</span><span·class="p">,</span><span·class="w"> |
| 170 | ····</span><span·class="ss">ok</span><span·class="p">.</span></code></pre><p>When·you·run·the·<code·class="inline">et_display_demo:test().</code>·function·in·the·example·above,·the | 170 | ····</span><span·class="ss">ok</span><span·class="p">.</span></code></pre><p>When·you·run·the·<code·class="inline">et_display_demo:test().</code>·function·in·the·example·above,·the |
| 171 | <code·class="inline">Viewer</code>·window·will·look·like·this:</p><p><img·src="assets/coffee_order.png"·alt="Screenshot·of·the·Viewer·window"·title="Screenshot·of·the·Viewer·window"/></p><h2·id="four-modules"·class="section-heading"> | 171 | <code·class="inline">Viewer</code>·window·will·look·like·this:</p><p><img·src="assets/coffee_order.png"·alt="Screenshot·of·the·Viewer·window"·title="Screenshot·of·the·Viewer·window"/></p><h2·id="four-modules"·class="section-heading"> |
| 172 | ··<a·href="#four-modules"·class="hover-link"> | 172 | ··<a·href="#four-modules"·class="hover-link"> |
| 173 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 173 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 174 | ··</a> | 174 | ··</a> |
| 175 | ··<span·class="text">Four·Modules</span> | 175 | ··<span·class="text">Four·Modules</span> |
| 176 | </h2> | 176 | </h2> |
| Offset 195, 15 lines modified | Offset 195, 15 lines modified | ||
| 195 | <code·class="inline">Tracer</code>·of·the·<code·class="inline">Raw·Trace·Data</code>.</p><p>Erlang·tracing·is·a·seething·pile·of·pain·that·involves·reasonably·complex | 195 | <code·class="inline">Tracer</code>·of·the·<code·class="inline">Raw·Trace·Data</code>.</p><p>Erlang·tracing·is·a·seething·pile·of·pain·that·involves·reasonably·complex |
| 196 | knowledge·of·clever·ports,·tracing·return·formats,·and·specialized·tracing | 196 | knowledge·of·clever·ports,·tracing·return·formats,·and·specialized·tracing |
| 197 | <code·class="inline">MatchSpecs</code>·(which·are·really·their·own·special·kind·of·hell).·The·tracing | 197 | <code·class="inline">MatchSpecs</code>·(which·are·really·their·own·special·kind·of·hell).·The·tracing |
| 198 | mechanism·is·very·powerful·indeed,·but·it·can·be·hard·to·grasp.</p><p>Luckily·there·is·a·simplified·way·to·start·tracing·of·<a·href="et.html#trace_me/5"><code·class="inline">et:trace_me/5</code></a>·function | 198 | mechanism·is·very·powerful·indeed,·but·it·can·be·hard·to·grasp.</p><p>Luckily·there·is·a·simplified·way·to·start·tracing·of·<a·href="et.html#trace_me/5"><code·class="inline">et:trace_me/5</code></a>·function |
| 199 | calls.·The·idea·is·that·you·should·instrument·your·code·with·calls·to | 199 | calls.·The·idea·is·that·you·should·instrument·your·code·with·calls·to |
| 200 | <a·href="et.html#trace_me/5"><code·class="inline">et:trace_me/5</code></a>·in·strategic·places·where·you·have·interesting·information | 200 | <a·href="et.html#trace_me/5"><code·class="inline">et:trace_me/5</code></a>·in·strategic·places·where·you·have·interesting·information |
| 201 | available·in·your·program.·Then·you·just·start·the·<code·class="inline">Collector</code>·with·global | 201 | available·in·your·program.·Then·you·just·start·the·<code·class="inline">Collector</code>·with·global |
| 202 | tracing·enabled:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">······</span><span·class="nc">et_viewer</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="031 | 202 | tracing·enabled:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">······</span><span·class="nc">et_viewer</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="0301016322-1">(</span><span·class="p"·data-group-id="0301016322-2">[</span><span·class="p"·data-group-id="0301016322-3">{</span><span·class="ss">trace_global</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">true</span><span·class="p"·da[·...·truncated·by·diffoscope;·len:·551,·SHA:·ea8e3d389f13600d3feb0266078a602a864227f562c9079283a1fd5e2a27fdf3·...·]-1">)</span><span·class="p">.</span></code></pre><p>This·will·start·a·<code·class="inline">Collector</code>,·a·<code·class="inline">Viewer</code>·and·also·start·the·tracing·of |
| 203 | <a·href="et.html#trace_me/5"><code·class="inline">et:trace_me/5</code></a>·function·calls.·The·<code·class="inline">Raw·Trace·Data</code>·is·collected·by·the | 203 | <a·href="et.html#trace_me/5"><code·class="inline">et:trace_me/5</code></a>·function·calls.·The·<code·class="inline">Raw·Trace·Data</code>·is·collected·by·the |
| 204 | <code·class="inline">Collector</code>·and·a·view·of·it·is·displayed·on·the·screen·by·the·<code·class="inline">Viewer</code>.·You·can | 204 | <code·class="inline">Collector</code>·and·a·view·of·it·is·displayed·on·the·screen·by·the·<code·class="inline">Viewer</code>.·You·can |
| 205 | define·your·own·"views"·of·the·data·by·implementing·your·own·<code·class="inline">Filter</code>·functions | 205 | define·your·own·"views"·of·the·data·by·implementing·your·own·<code·class="inline">Filter</code>·functions |
| 206 | and·register·them·in·the·<code·class="inline">Viewer</code>.</p><h2·id="the-collector-and-viewer"·class="section-heading"> | 206 | and·register·them·in·the·<code·class="inline">Viewer</code>.</p><h2·id="the-collector-and-viewer"·class="section-heading"> |
| 207 | ··<a·href="#the-collector-and-viewer"·class="hover-link"> | 207 | ··<a·href="#the-collector-and-viewer"·class="hover-link"> |
| 208 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 208 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 209 | ··</a> | 209 | ··</a> |
| Offset 251, 44 lines modified | Offset 251, 44 lines modified | ||
| 251 | ··</a> | 251 | ··</a> |
| 252 | ··<span·class="text">How·To·Put·It·Together</span> | 252 | ··<span·class="text">How·To·Put·It·Together</span> |
| 253 | </h2> | 253 | </h2> |
| 254 | <p>The·<code·class="inline">Collector</code>·automatically·registers·itself·to·listen·for·trace·<code·class="inline">Events</code>,·so | 254 | <p>The·<code·class="inline">Collector</code>·automatically·registers·itself·to·listen·for·trace·<code·class="inline">Events</code>,·so |
| 255 | all·you·have·to·do·is·enable·them.</p><p>For·those·people·who·want·to·do·general·tracing,·consult·the·<code·class="inline">dbg</code>·module·on·how | 255 | all·you·have·to·do·is·enable·them.</p><p>For·those·people·who·want·to·do·general·tracing,·consult·the·<code·class="inline">dbg</code>·module·on·how |
| 256 | to·trace·whatever·you're·interested·in·and·let·it·work·its·magic.·If·you·just | 256 | to·trace·whatever·you're·interested·in·and·let·it·work·its·magic.·If·you·just |
| 257 | want·<a·href="et.html#trace_me/5"><code·class="inline">et:trace_me/5</code></a>·to·work,·do·the·following:</p><ol><li>Create·a·<code·class="inline">Collector</code></li><li>Create·a·<code·class="inline">Viewer</code>·(this·can·do·step·#1·for·you)</li><li>Turn·on·and·pare·down·debugging</li></ol><p>The·module·<code·class="inline">et/examples/et_trace_demo.erl</code>·achieves·this.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w"> | 257 | want·<a·href="et.html#trace_me/5"><code·class="inline">et:trace_me/5</code></a>·to·work,·do·the·following:</p><ol><li>Create·a·<code·class="inline">Collector</code></li><li>Create·a·<code·class="inline">Viewer</code>·(this·can·do·step·#1·for·you)</li><li>Turn·on·and·pare·down·debugging</li></ol><p>The·module·<code·class="inline">et/examples/et_trace_demo.erl</code>·achieves·this.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w"> |
| 258 | </span><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 258 | </span><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="9416611706-1">(</span><span·class="ss">et_trace_demo</span><span·class="p"·data-group-id="9416611706-1">)</span><span·class="p">.</span><span·class="w"> |
| 259 | </span><span·class="w"> | 259 | </span><span·class="w"> |
| 260 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 260 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="9416611706-2">(</span><span·class="p"·data-group-id="9416611706-3">[</span><span·class="ss">test</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data-group-id="9416611706-3">]</span><span·class="p"·data-group-id="9416611706-2">)</span><span·class="p">.</span><span·class="w"> |
| 261 | </span><span·class="nf">test</span><span·class="p"·data-group-id=" | 261 | </span><span·class="nf">test</span><span·class="p"·data-group-id="9416611706-4">(</span><span·class="p"·data-group-id="9416611706-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 262 | ····</span><span·class="nc">et_viewer</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 262 | ····</span><span·class="nc">et_viewer</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="9416611706-5">(</span><span·class="p"·data-group-id="9416611706-6">[</span><span·class="w"> |
| 263 | ········</span><span·class="p"·data-group-id=" | 263 | ········</span><span·class="p"·data-group-id="9416611706-7">{</span><span·class="ss">title</span><span·class="p">,</span><span·class="s">"Coffee·Order"</span><span·class="p"·data-group-id="9416611706-7">}</span><span·class="p">,</span><span·class="w"> |
| 264 | ········</span><span·class="p"·data-group-id=" | 264 | ········</span><span·class="p"·data-group-id="9416611706-8">{</span><span·class="ss">trace_global</span><span·class="p">,</span><span·class="ss">true</span><span·class="p"·data-group-id="9416611706-8">}</span><span·class="p">,</span><span·class="w"> |
| 265 | ········</span><span·class="p"·data-group-id=" | 265 | ········</span><span·class="p"·data-group-id="9416611706-9">{</span><span·class="nb">trace_pattern</span><span·class="p">,</span><span·class="p"·data-group-id="9416611706-10">{</span><span·class="ss">et</span><span·class="p">,</span><span·class="ss">max</span><span·class="p"·data-group-id="9416611706-[·...·truncated·by·diffoscope;·len:·53,·SHA:·516cf531a85797ca6bcd95b65ab24c0468d5d853f99999d75b5edb7be76e427b·...·]-9">}</span><span·class="p">,</span><span·class="w"> |
| 266 | ········</span><span·class="p"·data-group-id=" | 266 | ········</span><span·class="p"·data-group-id="9416611706-11">{</span><span·class="ss">max_actors</span><span·class="p">,</span><span·class="mi">10</span><span·class="p"·data-group-id="9416611706-11">}</span><span·class="w"> |
| 267 | ······</span><span·class="p"·data-group-id=" | 267 | ······</span><span·class="p"·data-group-id="9416611706-6">]</span><span·class="p"·data-group-id="9416611706-5">)</span><span·class="p">,</span><span·class="w"> |
| 268 | ······</span><span·class="c1">%%·dbg:p(all,call),</span><span·class="w"> | 268 | ······</span><span·class="c1">%%·dbg:p(all,call),</span><span·class="w"> |
| 269 | ······</span><span·class="c1">%%·dbg:tpl(et,·trace_me,·5,·[]),</span><span·class="w"> | 269 | ······</span><span·class="c1">%%·dbg:tpl(et,·trace_me,·5,·[]),</span><span·class="w"> |
| 270 | ······</span><span·class="n">Drink</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 270 | ······</span><span·class="n">Drink</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="9416611706-12">{</span><span·class="ss">drink</span><span·class="p">,</span><span·class="ss">iced_chai_latte</span><span·class="p"·data-group-id="9416611706-12">}</span><span·class="p">,</span><span·class="w"> |
| 271 | ······</span><span·class="n">Size</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 271 | ······</span><span·class="n">Size</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="9416611706-13">{</span><span·class="nb">size</span><span·class="p">,</span><span·class="ss">grande</span><span·class="p"·data-group-id="9416611706-13">}</span><span·class="p">,</span><span·class="w"> |
| 272 | ······</span><span·class="n">Milk</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 272 | ······</span><span·class="n">Milk</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="9416611706-14">{</span><span·class="ss">milk</span><span·class="p">,</span><span·class="ss">whole</span><span·class="p"·data-group-id="9416611706-14">}</span><span·class="p">,</span><span·class="w"> |
| 273 | ······</span><span·class="n">Flavor</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 273 | ······</span><span·class="n">Flavor</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="9416611706-15">{</span><span·class="ss">flavor</span><span·class="p">,</span><span·class="ss">vanilla</span><span·class="p"·data-group-id="9416611706-15">}</span><span·class="p">,</span><span·class="w"> |
| 274 | ······</span><span·class="nc">et</span><span·class="p">:</span><span·class="nf">trace_me</span><span·class="p"·data-group-id=" | 274 | ······</span><span·class="nc">et</span><span·class="p">:</span><span·class="nf">trace_me</span><span·class="p"·data-group-id="9416611706-16">(</span><span·class="mi">99</span><span·class="p">,</span><span·class="ss">customer</span><span·class="p">,</span><span·class="ss">barrista1</span><span·class="p">,</span><span·class="ss">place_order</span><span·class="p">,</span><span·class[·...·truncated·by·diffoscope;·len:·321,·SHA:·ad6677b5cad3c91154fe7a090c2c92b5424f206aa96554f8a64d8875891ab91d·...·]-16">)</span><span·class="p">,</span><span·class="w"> |
| 275 | ······</span><span·class="nc">et</span><span·class="p">:</span><span·class="nf">trace_me</span><span·class="p"·data-group-id=" | 275 | ······</span><span·class="nc">et</span><span·class="p">:</span><span·class="nf">trace_me</span><span·class="p"·data-group-id="9416611706-18">(</span><span·class="mi">80</span><span·class="p">,</span><span·class="ss">barrista1</span><span·class="p">,</span><span·class="nb">register</span><span·class="p">,</span><span·class="ss">enter_order</span><span·class="p">,</span><span·class[·...·truncated·by·diffoscope;·len:·270,·SHA:·4c0d9f98ea075cb4537587476294a7ca2ef8434d339955ef7587ef10b9e59686·...·]-18">)</span><span·class="p">,</span><span·class="w"> |
| 276 | ······</span><span·class="nc">et</span><span·class="p">:</span><span·class="nf">trace_me</span><span·class="p"·data-group-id=" | 276 | ······</span><span·class="nc">et</span><span·class="p">:</span><span·class="nf">trace_me</span><span·class="p"·data-group-id="9416611706-20">(</span><span·class="mi">80</span><span·class="p">,</span><span·class="nb">register</span><span·class="p">,</span><span·class="ss">barrista1</span><span·class="p">,</span><span·class="ss">give_total</span><span·class="p">,</span><span·class=[·...·truncated·by·diffoscope;·len:·66,·SHA:·5ed82f430484f760e4ac57b56b603f0274973c6da87073a5c6e8cef32060d6e6·...·]-20">)</span><span·class="p">,</span><span·class="w"> |
| 277 | ······</span><span·class="nc">et</span><span·class="p">:</span><span·class="nf">trace_me</span><span·class="p"·data-group-id=" | 277 | ······</span><span·class="nc">et</span><span·class="p">:</span><span·class="nf">trace_me</span><span·class="p"·data-group-id="9416611706-21">(</span><span·class="mi">80</span><span·class="p">,</span><span·class="ss">barrista1</span><span·class="p">,</span><span·class="ss">barrista1</span><span·class="p">,</span><span·class="ss">get_cup</span><span·class="p">,</span><span·class="p[·...·truncated·by·diffoscope;·len:·214,·SHA:·b81893bd3827295b45c146e3f1d26f4619ae3e77eb208c017e64e123e54fa893·...·]-21">)</span><span·class="p">,</span><span·class="w"> |
| 278 | ······</span><span·class="nc">et</span><span·class="p">:</span><span·class="nf">trace_me</span><span·class="p"·data-group-id=" | 278 | ······</span><span·class="nc">et</span><span·class="p">:</span><span·class="nf">trace_me</span><span·class="p"·data-group-id="9416611706-23">(</span><span·class="mi">80</span><span·class="p">,</span><span·class="ss">barrista1</span><span·class="p">,</span><span·class="ss">barrista2</span><span·class="p">,</span><span·class="ss">give_cup</span><span·class="p">,</span><span·class="[·...·truncated·by·diffoscope;·len:·136,·SHA:·f7aae1d27bd6205aaf64f7e18e93a411795748065b5f36aa1eb033aaec849b36·...·]-23">)</span><span·class="p">,</span><span·class="w"> |
| 279 | ······</span><span·class="nc">et</span><span·class="p">:</span><span·class="nf">trace_me</span><span·class="p"·data-group-id=" | 279 | ······</span><span·class="nc">et</span><span·class="p">:</span><span·class="nf">trace_me</span><span·class="p"·data-group-id="9416611706-25">(</span><span·class="mi">90</span><span·class="p">,</span><span·class="ss">barrista1</span><span·class="p">,</span><span·class="ss">customer</span><span·class="p">,</span><span·class="ss">request_money</span><span·class="p">,</span><span·cla[·...·truncated·by·diffoscope;·len:·69,·SHA:·06f08dbea0648f27cb1ad2f4fbd651697888e693f79eff30a60e079941c839b9·...·]-25">)</span><span·class="p">,</span><span·class="w"> |
| 280 | ······</span><span·class="nc">et</span><span·class="p">:</span><span·class="nf">trace_me</span><span·class="p"·data-group-id=" | 280 | ······</span><span·class="nc">et</span><span·class="p">:</span><span·class="nf">trace_me</span><span·class="p"·data-group-id="9416611706-26">(</span><span·class="mi">90</span><span·class="p">,</span><span·class="ss">customer</span><span·class="p">,</span><span·class="ss">barrista1</span><span·class="p">,</span><span·class="ss">pay_money</span><span·class="p">,</span><span·class="[·...·truncated·by·diffoscope;·len:·65,·SHA:·bb7d943165531cbbf4b03da9dc7fc49401f0d44b3609cb9e44c8330bec454154·...·]-26">)</span><span·class="p">,</span><span·class="w"> |
| 281 | ······</span><span·class="nc">et</span><span·class="p">:</span><span·class="nf">trace_me</span><span·class="p"·data-group-id=" | 281 | ······</span><span·class="nc">et</span><span·class="p">:</span><span·class="nf">trace_me</span><span·class="p"·data-group-id="9416611706-27">(</span><span·class="mi">80</span><span·class="p">,</span><span·class="ss">barrista2</span><span·class="p">,</span><span·class="ss">barrista2</span><span·class="p">,</span><span·class="ss">get_chai_mix</span><span·class="p">,</span><span·cla[·...·truncated·by·diffoscope;·len:·140,·SHA:·741e6106df1346d7d47dadfd7d7aae9213bb914a4e7f3f09e85528b25467fead·...·]-27">)</span><span·class="p">,</span><span·class="w"> |
| 282 | ······</span><span·class="nc">et</span><span·class="p">:</span><span·class="nf">trace_me</span><span·class="p"·data-group-id=" | 282 | ······</span><span·class="nc">et</span><span·class="p">:</span><span·class="nf">trace_me</span><span·class="p"·data-group-id="9416611706-29">(</span><span·class="mi">80</span><span·class="p">,</span><span·class="ss">barrista2</span><span·class="p">,</span><span·class="ss">barrista2</span><span·class="p">,</span><span·class="ss">add_flavor</span><span·class="p">,</span><span·class[·...·truncated·by·diffoscope;·len:·167,·SHA:·2960d8b297efa5691914eaf1e50cf7ba8c00b4761253e5cb5e6a25d5203bb040·...·]-29">)</span><span·class="p">,</span><span·class="w"> |
| 283 | ······</span><span·class="nc">et</span><span·class="p">:</span><span·class="nf">trace_me</span><span·class="p"·data-group-id=" | 283 | ······</span><span·class="nc">et</span><span·class="p">:</span><span·class="nf">trace_me</span><span·class="p"·data-group-id="9416611706-31">(</span><span·class="mi">80</span><span·class="p">,</span><span·class="ss">barrista2</span><span·class="p">,</span><span·class="ss">barrista2</span><span·class="p">,</span><span·class="ss">add_milk</span><span·class="p">,</span><span·class="[·...·truncated·by·diffoscope;·len:·163,·SHA:·4f51104f38b17877b4af7ae100d4d83b1f04281bc03169e71fd9952cbc01ff46·...·]-31">)</span><span·class="p">,</span><span·class="w"> |
| 284 | ······</span><span·class="nc">et</span><span·class="p">:</span><span·class="nf">trace_me</span><span·class="p"·data-group-id=" | 284 | ······</span><span·class="nc">et</span><span·class="p">:</span><span·class="nf">trace_me</span><span·class="p"·data-group-id="9416611706-33">(</span><span·class="mi">80</span><span·class="p">,</span><span·class="ss">barrista2</span><span·class="p">,</span><span·class="ss">barrista2</span><span·class="p">,</span><span·class="ss">add_ice</span><span·class="p">,</span><span·class="p[·...·truncated·by·diffoscope;·len:·135,·SHA:·a98b659eafcaa406c7fa36d997cd818431d59a7e7e28bcd28946c5298150384c·...·]-33">)</span><span·class="p">,</span><span·class="w"> |
| 285 | ······</span><span·class="nc">et</span><span·class="p">:</span><span·class="nf">trace_me</span><span·class="p"·data-group-id=" | 285 | ······</span><span·class="nc">et</span><span·class="p">:</span><span·class="nf">trace_me</span><span·class="p"·data-group-id="9416611706-35">(</span><span·class="mi">80</span><span·class="p">,</span><span·class="ss">barrista2</span><span·class="p">,</span><span·class="ss">barrista2</span><span·class="p">,</span><span·class="ss">swirl</span><span·class="p">,</span><span·class="p"·[·...·truncated·by·diffoscope;·len:·133,·SHA:·2940734fc3ab5c16c1cc60fdddece5ebc4a4284bd8c201221ba5cd3818b77590·...·]-35">)</span><span·class="p">,</span><span·class="w"> |
| 286 | ······</span><span·class="nc">et</span><span·class="p">:</span><span·class="nf">trace_me</span><span·class="p"·data-group-id=" | 286 | ······</span><span·class="nc">et</span><span·class="p">:</span><span·class="nf">trace_me</span><span·class="p"·data-group-id="9416611706-37">(</span><span·class="mi">80</span><span·class="p">,</span><span·class="ss">barrista2</span><span·class="p">,</span><span·class="ss">customer</span><span·class="p">,</span><span·class="ss">give_tasty_beverage</span><span·class="p">,</span><sp[·...·truncated·by·diffoscope;·len:·225,·SHA:·8af001a80ec662f356a69f5a188ad6ec03e39da0669f08431e234152d5170c4a·...·]-37">)</span><span·class="p">,</span><span·class="w"> |
| 287 | ······</span><span·class="ss">ok</span><span·class="p">.</span></code></pre><p>Running·through·the·above,·the·most·important·points·are:</p><ul><li>Turn·on·global·tracing</li><li>Set·a·<code·class="inline">Trace·Pattern</code></li><li>Tell·<code·class="inline">dbg</code>·to·trace·function·Calls</li><li>Tell·it·specifically·to·trace·the·<a·href="et.html#trace_me/5"><code·class="inline">et:trace_me/5</code></a>·function</li></ul><p>When·you·run·the·<code·class="inline">et_trace_demo:test()</code>·function·above,·the·<code·class="inline">Viewer</code>·window·will | 287 | ······</span><span·class="ss">ok</span><span·class="p">.</span></code></pre><p>Running·through·the·above,·the·most·important·points·are:</p><ul><li>Turn·on·global·tracing</li><li>Set·a·<code·class="inline">Trace·Pattern</code></li><li>Tell·<code·class="inline">dbg</code>·to·trace·function·Calls</li><li>Tell·it·specifically·to·trace·the·<a·href="et.html#trace_me/5"><code·class="inline">et:trace_me/5</code></a>·function</li></ul><p>When·you·run·the·<code·class="inline">et_trace_demo:test()</code>·function·above,·the·<code·class="inline">Viewer</code>·window·will |
| 288 | look·like·this·screenshot:</p><p><img·src="assets/coffee_order.png"·alt="Screenshot·of·the·Viewer·window"·title="Screenshot·of·the·Viewer·window"/></p> | 288 | look·like·this·screenshot:</p><p><img·src="assets/coffee_order.png"·alt="Screenshot·of·the·Viewer·window"·title="Screenshot·of·the·Viewer·window"/></p> |
| 289 | </div> | 289 | </div> |
| 290 | <div·class="bottom-actions"·id="bottom-actions"> | 290 | <div·class="bottom-actions"·id="bottom-actions"> |
| 291 | ··<div·class="bottom-actions-item"> | 291 | ··<div·class="bottom-actions-item"> |
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| 118 | <div·id="search"> | 118 | <div·id="search"> |
| 119 | ··<h1> | 119 | ··<h1> |
| 120 | ····<span></span> | 120 | ····<span></span> |
| 121 | ··</h1> | 121 | ··</h1> |
| 122 | ··<div·class="loading"><div></div><div></div><div></div><div></div></div> | 122 | ··<div·class="loading"><div></div><div></div><div></div><div></div></div> |
| 123 | </div> | 123 | </div> |
| 124 | <script·src="dist/search_data- | 124 | <script·src="dist/search_data-07FF68FB.js"></script> |
| 125 | ····<footer·class="footer"> | 125 | ····<footer·class="footer"> |
| 126 | ······<p> | 126 | ······<p> |
| 127 | ········<span·class="line"> | 127 | ········<span·class="line"> |
| 128 | ··········<button·class="a-main·footer-button·display-quick-switch"·title="Search·HexDocs·packages"> | 128 | ··········<button·class="a-main·footer-button·display-quick-switch"·title="Search·HexDocs·packages"> |
| 129 | ············Search·HexDocs | 129 | ············Search·HexDocs |
| 130 | ··········</button> | 130 | ··········</button> |
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| 8 | ?rw-r--r--··6.1·unx····14562·bx·defN·25-Mar-18·0 | 8 | ?rw-r--r--··6.1·unx····14562·bx·defN·25-Mar-18·08:51·OEBPS/dist/epub-erlang-ESPT6BQV.css |
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| 12 | ?rw-r--r--··6.1·unx·····5837·bx·defN·25-Mar-18·0 | 12 | ?rw-r--r--··6.1·unx·····5837·bx·defN·25-Mar-18·08:51·OEBPS/assets/logo.png |
| 13 | ?rw-r--r--··6.1·unx······252·bx·defN·25-Mar-18·0 | 13 | ?rw-r--r--··6.1·unx······252·bx·defN·25-Mar-18·08:51·META-INF/container.xml |
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| 3 | ?rw-r--r--··6.1·unx······710·bx·defN·25-Mar-18·0 | 3 | ?rw-r--r--··6.1·unx······710·bx·defN·25-Mar-18·08:52·OEBPS/title.xhtml |
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| 5 | ?rw-r--r--··6.1·unx·····1130·bx·defN·25-Mar-18·0 | 5 | ?rw-r--r--··6.1·unx·····1130·bx·defN·25-Mar-18·08:52·OEBPS/nav.xhtml |
| 6 | ?rw-r--r--··6.1·unx·····1148·bx·defN·25-Mar-18·0 | 6 | ?rw-r--r--··6.1·unx·····1148·bx·defN·25-Mar-18·08:52·OEBPS/introduction.xhtml |
| 7 | ?rw-r--r--··6.1·unx·····7044·bx·defN·25-Mar-18·0 | 7 | ?rw-r--r--··6.1·unx·····7044·bx·defN·25-Mar-18·08:52·OEBPS/ftp_client.xhtml |
| 8 | ?rw-r--r--··6.1·unx····75259·bx·defN·25-Mar-18·0 | 8 | ?rw-r--r--··6.1·unx····75259·bx·defN·25-Mar-18·08:52·OEBPS/ftp.xhtml |
| 9 | ?rw-r--r--··6.1·unx····14562·bx·defN·25-Mar-18·0 | 9 | ?rw-r--r--··6.1·unx····14562·bx·defN·25-Mar-18·08:52·OEBPS/dist/epub-erlang-ESPT6BQV.css |
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| 14 | ?rw-r--r--··6.1·unx······162·bx·defN·25-Mar-18·0 | 14 | ?rw-r--r--··6.1·unx······162·bx·defN·25-Mar-18·08:52·META-INF/com.apple.ibooks.display-options.xml |
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| 122 | ······</a> | 122 | ······</a> |
| 123 | ····<span>Examples</span> | 123 | ····<span>Examples</span> |
| 124 | ··</h1> | 124 | ··</h1> |
| 125 | <p>The·following·is·a·simple·example·of·an·FTP·session,·where·the·user·<code·class="inline">guest</code>·with | 125 | <p>The·following·is·a·simple·example·of·an·FTP·session,·where·the·user·<code·class="inline">guest</code>·with |
| 126 | password·<code·class="inline">password</code>·logs·on·to·the·remote·host·<code·class="inline">erlang.org</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">······</span><span·class="mi">1</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ftp</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="0 | 126 | password·<code·class="inline">password</code>·logs·on·to·the·remote·host·<code·class="inline">erlang.org</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">······</span><span·class="mi">1</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ftp</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="0695671771-1">(</span><span·class="p"·data-group-id="0695671771-1">)</span><span·class="p">.</span><span·class="w"> |
| 127 | ······</span><span·class="ss">ok</span><span·class="w"> | 127 | ······</span><span·class="ss">ok</span><span·class="w"> |
| 128 | ······</span><span·class="mi">2</span><span·class="o">></span><span·class="w">·</span><span·class="p"·data-group-id="0 | 128 | ······</span><span·class="mi">2</span><span·class="o">></span><span·class="w">·</span><span·class="p"·data-group-id="0695671771-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pid</span><span·class="p"·data-group-id="0695671771-2">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·clas[·...·truncated·by·diffoscope;·len:·496,·SHA:·2d106484c00719858fe20e80ffa104018c266a50bff6af0f92605f4c72f9d450·...·]-3">)</span><span·class="p">.</span><span·class="w"> |
| 129 | ······</span><span·class="p"·data-group-id="0 | 129 | ······</span><span·class="p"·data-group-id="0695671771-6">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.22</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="0695671771-6">}</span><span·class="w"> |
| 130 | ······</span><span·class="mi">3</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ftp</span><span·class="p">:</span><span·class="nf">user</span><span·class="p"·data-group-id="0 | 130 | ······</span><span·class="mi">3</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ftp</span><span·class="p">:</span><span·class="nf">user</span><span·class="p"·data-group-id="0695671771-7">(</span><span·class="n">Pid</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"guest"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"password"</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·11,·SHA:·c3c3e80b2b148c131ff05942a44a4f5954abf54f794c36802fd2c7918167daf4·...·]-7">)</span><span·class="p">.</span><span·class="w"> |
| 131 | ······</span><span·class="ss">ok</span><span·class="w"> | 131 | ······</span><span·class="ss">ok</span><span·class="w"> |
| 132 | ······</span><span·class="mi">4</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ftp</span><span·class="p">:</span><span·class="nf">pwd</span><span·class="p"·data-group-id="0 | 132 | ······</span><span·class="mi">4</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ftp</span><span·class="p">:</span><span·class="nf">pwd</span><span·class="p"·data-group-id="0695671771-8">(</span><span·class="n">Pid</span><span·class="p"·data-group-id="0695671771-8">)</span><span·class="p">.</span><span·class="w"> |
| 133 | ······</span><span·class="p"·data-group-id="0 | 133 | ······</span><span·class="p"·data-group-id="0695671771-9">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"/home/guest"</span><span·class="p"·data-group-id="0695671771-9">}</span><span·class="w"> |
| 134 | ······</span><span·class="mi">5</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ftp</span><span·class="p">:</span><span·class="nf">cd</span><span·class="p"·data-group-id="0 | 134 | ······</span><span·class="mi">5</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ftp</span><span·class="p">:</span><span·class="nf">cd</span><span·class="p"·data-group-id="0695671771-10">(</span><span·class="n">Pid</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"appl/examples"</span><span·class="p"·data-group-id="0695671771-10">)</span><span·class="p">.</span><span·class="w"> |
| 135 | ······</span><span·class="ss">ok</span><span·class="w"> | 135 | ······</span><span·class="ss">ok</span><span·class="w"> |
| 136 | ······</span><span·class="mi">6</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ftp</span><span·class="p">:</span><span·class="nf">lpwd</span><span·class="p"·data-group-id="0 | 136 | ······</span><span·class="mi">6</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ftp</span><span·class="p">:</span><span·class="nf">lpwd</span><span·class="p"·data-group-id="0695671771-11">(</span><span·class="n">Pid</span><span·class="p"·data-group-id="0695671771-11">)</span><span·class="p">.</span><span·class="w"> |
| 137 | ······</span><span·class="p"·data-group-id="0 | 137 | ······</span><span·class="p"·data-group-id="0695671771-12">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"/home/fred"</span><span·class="p"·data-group-id="0695671771-12">}</span><span·class="p">.</span><span·class="w"> |
| 138 | ······</span><span·class="mi">7</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ftp</span><span·class="p">:</span><span·class="nf">lcd</span><span·class="p"·data-group-id="0 | 138 | ······</span><span·class="mi">7</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ftp</span><span·class="p">:</span><span·class="nf">lcd</span><span·class="p"·data-group-id="0695671771-13">(</span><span·class="n">Pid</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"/home/eproj/examples"</span><span·class="p"·data-group-id="0695671771-13">)</span><span·class="p">.</span><span·class="w"> |
| 139 | ······</span><span·class="ss">ok</span><span·class="w"> | 139 | ······</span><span·class="ss">ok</span><span·class="w"> |
| 140 | ······</span><span·class="mi">8</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ftp</span><span·class="p">:</span><span·class="nf">recv</span><span·class="p"·data-group-id="0 | 140 | ······</span><span·class="mi">8</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ftp</span><span·class="p">:</span><span·class="nf">recv</span><span·class="p"·data-group-id="0695671771-14">(</span><span·class="n">Pid</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"appl.erl"</span><span·class="p"·data-group-id="0695671771-14">)</span><span·class="p">.</span><span·class="w"> |
| 141 | ······</span><span·class="ss">ok</span><span·class="w"> | 141 | ······</span><span·class="ss">ok</span><span·class="w"> |
| 142 | ······</span><span·class="mi">9</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ftp</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id="0 | 142 | ······</span><span·class="mi">9</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ftp</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id="0695671771-15">(</span><span·class="n">Pid</span><span·class="p"·data-group-id="0695671771-15">)</span><span·class="p">.</span><span·class="w"> |
| 143 | ······</span><span·class="ss">ok</span><span·class="w"> | 143 | ······</span><span·class="ss">ok</span><span·class="w"> |
| 144 | ······</span><span·class="mi">10</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ftp</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id="0 | 144 | ······</span><span·class="mi">10</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ftp</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id="0695671771-16">(</span><span·class="p"·data-group-id="0695671771-16">)</span><span·class="p">.</span><span·class="w"> |
| 145 | ······</span><span·class="ss">ok</span></code></pre><p>The·file·<code·class="inline">appl.erl</code>·is·transferred·from·the·remote·to·the·local·host.·When·the | 145 | ······</span><span·class="ss">ok</span></code></pre><p>The·file·<code·class="inline">appl.erl</code>·is·transferred·from·the·remote·to·the·local·host.·When·the |
| 146 | session·is·opened,·the·current·directory·at·the·remote·host·is·<code·class="inline">/home/guest</code>, | 146 | session·is·opened,·the·current·directory·at·the·remote·host·is·<code·class="inline">/home/guest</code>, |
| 147 | and·<code·class="inline">/home/fred</code>·at·the·local·host.·Before·transferring·the·file,·the·current | 147 | and·<code·class="inline">/home/fred</code>·at·the·local·host.·Before·transferring·the·file,·the·current |
| 148 | local·directory·is·changed·to·<code·class="inline">/home/eproj/examples</code>,·and·the·remote·directory | 148 | local·directory·is·changed·to·<code·class="inline">/home/eproj/examples</code>,·and·the·remote·directory |
| 149 | is·set·to·<code·class="inline">/home/guest/appl/examples</code>.</p> | 149 | is·set·to·<code·class="inline">/home/guest/appl/examples</code>.</p> |
| 150 | </div> | 150 | </div> |
| Offset 134, 40 lines modified | Offset 134, 40 lines modified | ||
| 134 | <p>The·HTTP·client·default·profile·is·started·when·the·<code·class="inline">Inets</code>·application·is | 134 | <p>The·HTTP·client·default·profile·is·started·when·the·<code·class="inline">Inets</code>·application·is |
| 135 | started·and·is·then·available·to·all·processes·on·that·Erlang·node.·Other | 135 | started·and·is·then·available·to·all·processes·on·that·Erlang·node.·Other |
| 136 | profiles·can·also·be·started·at·application·startup,·or·profiles·can·be·started | 136 | profiles·can·also·be·started·at·application·startup,·or·profiles·can·be·started |
| 137 | and·stopped·dynamically·in·runtime.·Each·client·profile·spawns·a·new·process·to | 137 | and·stopped·dynamically·in·runtime.·Each·client·profile·spawns·a·new·process·to |
| 138 | handle·each·request,·unless·a·persistent·connection·can·be·used·with·or·without | 138 | handle·each·request,·unless·a·persistent·connection·can·be·used·with·or·without |
| 139 | pipelining.·The·client·adds·a·<code·class="inline">host</code>·header·and·an·empty·<code·class="inline">te</code>·header·if·there | 139 | pipelining.·The·client·adds·a·<code·class="inline">host</code>·header·and·an·empty·<code·class="inline">te</code>·header·if·there |
| 140 | are·no·such·headers·present·in·the·request.</p><p>The·client·supports·IPv6·as·long·as·the·underlying·mechanisms·also·do·so.</p><p>The·following·is·to·be·put·in·the·Erlang·node·application·configuration·file·to | 140 | are·no·such·headers·present·in·the·request.</p><p>The·client·supports·IPv6·as·long·as·the·underlying·mechanisms·also·do·so.</p><p>The·following·is·to·be·put·in·the·Erlang·node·application·configuration·file·to |
| 141 | start·a·profile·at·application·startup:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 141 | start·a·profile·at·application·startup:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="4859271939-1">[</span><span·class="p"·data-group-id="4859271939-2">{</span><span·class="ss">inets</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4859271939-3">[</span><span·class="p"·data-group-id="4859271939-4">{</spa[·...·truncated·by·diffoscope;·len:·606,·SHA:·53692630d381efd17ee72273ba620e546430cb929bba8e66a0ecd8e9a488b32f·...·]-1">]</span></code></pre><p>For·valid·properties,·see·<a·href="httpc.html"><code·class="inline">httpc</code></a>.</p><h2·id="getting-started"·class="section-heading"> |
| 142 | ··<a·href="#getting-started"·class="hover-link"> | 142 | ··<a·href="#getting-started"·class="hover-link"> |
| 143 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 143 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 144 | ··</a> | 144 | ··</a> |
| 145 | ··<span·class="text">Getting·Started</span> | 145 | ··<span·class="text">Getting·Started</span> |
| 146 | </h2> | 146 | </h2> |
| 147 | <p>Start·<code·class="inline">Inets</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">inets</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 147 | <p>Start·<code·class="inline">Inets</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">inets</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="6292704133-1">(</span><span·class="p"·data-group-id="6292704133-1">)</span><span·class="p">.</span><span·class="w"> |
| 148 | </span><span·class="ss">ok</span></code></pre><p>The·following·calls·use·the·default·client·profile.·Use·the·proxy | 148 | </span><span·class="ss">ok</span></code></pre><p>The·following·calls·use·the·default·client·profile.·Use·the·proxy |
| 149 | <code·class="inline">"www-proxy.mycompany.com:8000"</code>,·except·from·requests·to·localhost.·This | 149 | <code·class="inline">"www-proxy.mycompany.com:8000"</code>,·except·from·requests·to·localhost.·This |
| 150 | applies·to·all·the·following·requests.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">httpc</span><span·class="p">:</span><span·class="nf">set_options</span><span·class="p"·data-group-id="24 | 150 | applies·to·all·the·following·requests.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">httpc</span><span·class="p">:</span><span·class="nf">set_options</span><span·class="p"·data-group-id="4240393810-1">(</span><span·class="p"·data-group-id="4240393810-2">[</span><span·class="p"·data-group-id="4240393810-3">{</span><span·class="ss">proxy</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4240393810-4">{</spa[·...·truncated·by·diffoscope;·len:·230,·SHA:·cd55de52f289e3beb4185692b92c1409fae278c340c58e466234fb645ce8e515·...·]-5">}</span><span·class="p">,</span><span·class="w"> |
| 151 | </span><span·class="p"·data-group-id="24 | 151 | </span><span·class="p"·data-group-id="4240393810-6">[</span><span·class="s">"localhost"</span><span·class="p"·data-group-id="4240393810-6">]</span><span·class="p"·data-group-id="4240393810-4">}</span><span·class="p"·data-group-id="4240393810-3">}</span><span·class="p"·data-group-id="[·...·truncated·by·diffoscope;·len:·63,·SHA:·7d1dcaa62d1ed74cd7069bbeca38fb4618189bd17bb12877e014daea97e869b3·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 152 | </span><span·class="ss">ok</span></code></pre><p>The·following·is·an·ordinary·synchronous·request:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="p"·data-group-id="0599407614-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0599407614-2">{</span><span·class="p"·data-group-id="0599407614-3">{</span><span·class="n">Version</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">200</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ReasonPhrase</span><span·class="p"·data-group-id="0599407614-3">}</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Headers</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Body</span><span·class="p"·data-group-id="0599407614-2">}</span><span·class="p"·data-group-id="0599407614-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | ||
| 153 | </span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="nc">httpc</span><span·class="p">:</span><span·class="nf">request</span><span·class="p"·data-group-id="0599407614-4">(</span><span·class="nb">get</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0599407614-5">{</span><span·class="s">"http://www.erlang.org"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0599407614-6">[</span><span·class="p"·data-group-id="0599407614-6">]</span><span·class="p"·data-group-id="0599407614-5">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0599407614-7">[</span><span·class="p"·data-group-id="0599407614-7">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0599407614-8">[</span><span·class="p"·data-group-id="0599407614-8">]</span><span·class="p"·data-group-id="0599407614-4">)</span><span·class="p">.</span></code></pre><p>With·all·the·default·values·presented,·a·get·request·can·also·be·written·as | ||
| 154 | follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable"> | 152 | </span><span·class="ss">ok</span></code></pre><p>The·following·is·an·ordinary·synchronous·request:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="p"·data-group-id="0027672194-1">{</span><span·clas[·...·truncated·by·diffoscope;·len:·658,·SHA:·a71db24baf1ecfb6f0df76e6d78b19a7b8949966083220ded029984d4a6303a5·...·]-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 153 | </span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="nc">httpc</span><span·class="p">:</span><span·class="nf">request</span><span·class="p"·data-group-id="0027672194-4">(</span><span·class="nb">get</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0027672194-5">{</span><span·class="s">"http://www.erlang.org"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0027672194-6">[</span><span·class="p"·data-group-id="0027672194-6">]</span><span·class="p"·data-group-id="0027672194-5">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0027672194-7">[</span><span·class="p"·data-group-id="0027672194-7">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0027672194-8">[</span><span·class="p"·data-group-id="0027672194-8">]</span><span·class="p"·data-group-id="0027672194-4">)</span><span·class="p">.</span></code></pre><p>With·all·the·default·values·presented,·a·get·request·can·also·be·written·as | ||
| 154 | follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">4>·</span><span·class="p"·data-group-id="9796617750-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9796617750-2">{</span><span·class="p"·data-group-id="9796617750-3">{</span><span·class="n">Version</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">200</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ReasonPhrase</span><span·class="p"·data-group-id="9796617750-3">}</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Headers</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Body</span><span·class="p"·data-group-id="9796617750-2">}</span><span·class="p"·data-group-id="9796617750-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | ||
| 155 | </span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="nc">httpc</span><span·class="p">:</span><span·class="nf">request</span><span·class="p"·data-group-id=" | 155 | </span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="nc">httpc</span><span·class="p">:</span><span·class="nf">request</span><span·class="p"·data-group-id="9796617750-4">(</span><span·class="s">"http://www.erlang.org"</span><span·class="p"·data-group-id="9796617750-4">)</span><span·class="p">.</span></code></pre><p>The·following·is·a·https·request·and·with·verification·of·the·host:</p><pre><code·cla[·...·truncated·by·diffoscope;·len:·798,·SHA:·2dbfcb6aaff7dda55f04469b98f4ae7056dd07b1d7f5deb75ed1e02c96d98eb1·...·]-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 156 | </span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="nc">httpc</span><span·class="p">:</span><span·class="nf">request</span><span·class="p"·data-group-id="5509667938-4">(</span><span·class="nb">get</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5509667938-5">{</span><span·class="s">"https://www.erlang.org"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5509667938-6">[</span><span·class="p"·data-group-id="5509667938-6">]</span><span·class="p"·data-group-id="5509667938-5">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5509667938-7">[</span><span·class="p"·data-group-id="5509667938-8">{</span><span·class="ss">ssl</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">httpc</span><span·class="p">:</span><span·class="nf">ssl_verify_host_options</span><span·class="p"·data-group-id="5509667938-9">(</span><span·class="ss">true</span><span·class="p"·data-group-id="5509667938-9">)</span><span·class="p"·data-group-id="5509667938-8">}</span><span·class="p"·data-group-id="5509667938-7">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5509667938-10">[</span><span·class="p"·data-group-id="5509667938-10">]</span><span·class="p"·data-group-id="5509667938-4">)</span><span·class="p">.</span></code></pre><p>The·following·is·an·ordinary·asynchronous·request:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">6>·</span><span·class="p"·data-group-id="6668514385-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">RequestId</span><span·class="p"·data-group-id="6668514385-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | ||
| 157 | </span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="nc">httpc</span><span·class="p">:</span><span·class="nf">request</span><span·class="p"·data-group-id=" | 156 | </span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="nc">httpc</span><span·class="p">:</span><span·class="nf">request</span><span·class="p"·data-group-id="3005257032-4">(</span><span·class="nb">get</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3005257032-5">{</span><span·class="s">"https://www.erlang.org"</span><span·class="p">,</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·1397,·SHA:·d5d93441b89037e46580bbf22da4603bcfcbd2b7a87e3102248972f591321d3a·...·] |
| 157 | </span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="nc">httpc</span><span·class="p">:</span><span·class="nf">request</span><span·class="p"·data-group-id="8505087717-2">(</span><span·class="nb">get</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8505087717-3">{</span><span·class="s">"http://www.erlang.org"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8505087717-4">[</span><span·class="p"·data-group-id="8505087717-4">]</span><span·class="p"·data-group-id="8505087717-3">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8505087717-5">[</span><span·class="p"·data-group-id="8505087717-5">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8505087717-6">[</span><span·class="p"·data-group-id="8505087717-7">{</span><span·class="ss">sync</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">false</span><span·class="p"·data-group-id="8505087717-7">}</span><span·class="p"·data-group-id="8505087717-6">]</span><span·class="p"·data-group-id="8505087717-2">)</span><span·class="p">.</span></code></pre><p>The·result·is·sent·to·the·calling·process·as·<code·class="inline">{http,·{ReqestId,·Result}}</code>.</p><p>In·this·case,·the·calling·process·is·the·shell,·so·the·following·result·is | ||
| 158 | received:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">7>·</span><span·class="k">receive</span><span·class="w">·</span><span·class="p"·data-group-id=" | 158 | received:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">7>·</span><span·class="k">receive</span><span·class="w">·</span><span·class="p"·data-group-id="5860597552-1">{</span><span·class="ss">http</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5860597552-2">{</span><span·class="n">RequestId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Result</s[·...·truncated·by·diffoscope;·len:·98,·SHA:·a7bff66c98b3dfa28b6cd6dd8d8a22ac726b8db6b13a6bdc602ce17d7dd1a04e·...·]-1">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="w">·</span><span·class="k">after</span><span·class="w">·</span><span·class="mi">500</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">error</span><span·class="w">·</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 159 | </span><span·class="ss">ok</span></code></pre><p>This·sends·a·request·with·a·specified·connection·header:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">8>·</span><span·class="p"·data-group-id=" | 159 | </span><span·class="ss">ok</span></code></pre><p>This·sends·a·request·with·a·specified·connection·header:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">8>·</span><span·class="p"·data-group-id="6606741447-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6606741447-2">{</span><span·class="p"·data-group-id="6606741447-3">{</span><span·class="n">NewVersion</span><span·class="p">,</sp[·...·truncated·by·diffoscope;·len:·446,·SHA:·e9c8828107e8706b4812cc9dfb4522e94e2b23e0ef6a9798825780b3c6b30744·...·]-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 160 | </span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="nc">httpc</span><span·class="p">:</span><span·class="nf">request</span><span·class="p"·data-group-id=" | 160 | </span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="nc">httpc</span><span·class="p">:</span><span·class="nf">request</span><span·class="p"·data-group-id="6606741447-4">(</span><span·class="nb">get</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6606741447-5">{</span><span·class="s">"http://www.erlang.org"</span><span·class="p">,</span><span·class="w">·</span><s[·...·truncated·by·diffoscope;·len:·384,·SHA:·f12d7cf2afdd723968200a880c57dcf3efdc2fb0537ae5cab880b9f45ed131ca·...·]-5">}</span><span·class="p">,</span><span·class="w"> |
| 161 | </span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="p"·data-group-id=" | 161 | </span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="p"·data-group-id="6606741447-8">[</span><span·class="p"·data-group-id="6606741447-8">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6606741447-9">[</span><span·class="p"·data-group-id="6606741447-9">]</span><span·class="p"·data-group-[·...·truncated·by·diffoscope;·len:·1013,·SHA:·e41e2f0b2891ed195fc75d8bfb516861e28a655398f94f4aebe44f210a111ab4·...·]-1">)</span><span·class="p">.</span><span·class="gp·unselectable"> |
| 162 | 10>·</span><span·class="p"·data-group-id=" | 162 | 10>·</span><span·class="p"·data-group-id="6911563927-5">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6911563927-6">{</span><span·class="p"·data-group-id="6911563927-7">{</span><span·class="n">NewVersion</span><span·class="p">,</sp[·...·truncated·by·diffoscope;·len:·446,·SHA:·847bdfdbfcefe8b767549372025b821ee5f02df8e00730b42b4e0e8d3e355c74·...·]-5">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 163 | ·</span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="nc">httpc</span><span·class="p">:</span><span·class="nf">request</span><span·class="p"·data-group-id=" | 163 | ·</span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="nc">httpc</span><span·class="p">:</span><span·class="nf">request</span><span·class="p"·data-group-id="6911563927-8">(</span><span·class="nb">put</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6911563927-9">{</span><span·class="s">"http:///v1/kv/foo"</span><span·class="p">,</span><span·class="w">·</span><span·[·...·truncated·by·diffoscope;·len:·1778,·SHA:·36f98891d6bea5533cc857b98578e633291646f3679c85cb071a644ccba00474·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 164 | </span><span·class="p"·data-group-id=" | 164 | </span><span·class="p"·data-group-id="2465930466-5">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="o"><</span><span·class="mf">0.45</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·513,·SHA:·027b52dddf38829381e8ff5ed3a75da7544699f7443bf183e0f23f70735db4cf·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 165 | </span><span·class="p"·data-group-id="44 | 165 | </span><span·class="p"·data-group-id="4462467839-2">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">econnrefused</span><span·class="p"·data-group-id="4462467839-2">}</span></code></pre><p>Stop·the·HTTP·client·profile:</p><pre><code·class="mak[·...·truncated·by·diffoscope;·len:·350,·SHA:·369009a79dbf0900630c5ef1f302737b1799e7b4e2f615553ee375e5ea58a0fd·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 166 | </span><span·class="ss">ok</span></code></pre><p>Alternative·way·to·stop·the·HTTP·client·profile:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">13>·</span><span·class="nc">inets</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id=" | 166 | </span><span·class="ss">ok</span></code></pre><p>Alternative·way·to·stop·the·HTTP·client·profile:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">13>·</span><span·class="nc">inets</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id="8865231861-1">(</span><span·class="ss">httpc</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pid</span><span·class="p"·data-group-id="8865231861-1">)</span><span·class="p">.</span><span·class="w"> |
| 167 | </span><span·class="ss">ok</span></code></pre> | 167 | </span><span·class="ss">ok</span></code></pre> |
| 168 | </div> | 168 | </div> |
| 169 | <div·class="bottom-actions"·id="bottom-actions"> | 169 | <div·class="bottom-actions"·id="bottom-actions"> |
| 170 | ··<div·class="bottom-actions-item"> | 170 | ··<div·class="bottom-actions-item"> |
| 171 | ······<a·href="inets_services.html"·class="bottom-actions-button"·rel="prev"> | 171 | ······<a·href="inets_services.html"·class="bottom-actions-button"·rel="prev"> |
| Offset 137, 54 lines modified | Offset 137, 54 lines modified | ||
| 137 | underlying·mechanisms·also·do·so.</p><p>The·server·implements·numerous·features,·such·as:</p><ul><li>Secure·Sockets·Layer·(SSL)</li><li>Erlang·Scripting·Interface·(ESI)</li><li>Common·Gateway·Interface·(CGI)</li><li>User·Authentication·(using·Mnesia,·Dets·or·plain·text·database)</li><li>Common·Logfile·Format·(with·or·without·disk_log(3)·support)</li><li>URL·Aliasing</li><li>Action·Mappings</li><li>Directory·Listings</li></ul><p>The·configuration·of·the·server·is·provided·as·an·Erlang·property·list.</p><p>As·of·<code·class="inline">Inets</code>·5.0·the·HTTP·server·is·an·easy·to·start/stop·and·customize·web | 137 | underlying·mechanisms·also·do·so.</p><p>The·server·implements·numerous·features,·such·as:</p><ul><li>Secure·Sockets·Layer·(SSL)</li><li>Erlang·Scripting·Interface·(ESI)</li><li>Common·Gateway·Interface·(CGI)</li><li>User·Authentication·(using·Mnesia,·Dets·or·plain·text·database)</li><li>Common·Logfile·Format·(with·or·without·disk_log(3)·support)</li><li>URL·Aliasing</li><li>Action·Mappings</li><li>Directory·Listings</li></ul><p>The·configuration·of·the·server·is·provided·as·an·Erlang·property·list.</p><p>As·of·<code·class="inline">Inets</code>·5.0·the·HTTP·server·is·an·easy·to·start/stop·and·customize·web |
| 138 | server·providing·the·most·basic·web·server·functionality.·Inets·is·designed·for | 138 | server·providing·the·most·basic·web·server·functionality.·Inets·is·designed·for |
| 139 | embedded·systems·and·if·you·want·a·full-fledged·web·server·there·are·other | 139 | embedded·systems·and·if·you·want·a·full-fledged·web·server·there·are·other |
| 140 | erlang·open·source·alternatives.</p><p>Almost·all·server·functionality·has·been·implemented·using·an·especially·crafted | 140 | erlang·open·source·alternatives.</p><p>Almost·all·server·functionality·has·been·implemented·using·an·especially·crafted |
| 141 | server·API,·which·is·described·in·the·Erlang·Web·Server·API.·This·API·can·be | 141 | server·API,·which·is·described·in·the·Erlang·Web·Server·API.·This·API·can·be |
| 142 | used·to·enhance·the·core·server·functionality,·for·example·with·custom·logging | 142 | used·to·enhance·the·core·server·functionality,·for·example·with·custom·logging |
| 143 | and·authentication.</p><p>The·following·is·to·be·put·in·the·Erlang·node·application·configuration·file·to | 143 | and·authentication.</p><p>The·following·is·to·be·put·in·the·Erlang·node·application·configuration·file·to |
| 144 | start·an·HTTP·server·at·application·startup:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="3681057300-1">[</span><span·class="p"·data-group-id="3681057300-2">{</span><span·class="ss">inets</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3681057300-3">[</span><span·class="p"·data-group-id="3681057300-4">{</span><span·class="ss">services</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3681057300-5">[</span><span·class="p"·data-group-id="3681057300-6">{</span><span·class="ss">httpd</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3681057300-7">[</span><span·class="p"·data-group-id="3681057300-8">{</span><span·class="ss">proplist_file</span><span·class="p">,</span><span·class="w"> | ||
| 145 | 144 | start·an·HTTP·server·at·application·startup:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="4052849955-1">[</span><span·class="p"·data-group-id="4052849955-2">{</span><span·class="ss">inets</span><span·class="p">,</span><[·...·truncated·by·diffoscope;·len:·528,·SHA:·47b42b04f5e96b4bface7e2d08f9c1c675c060b2116ccd360c16b60177fe66c2·...·]</span><span·class="p">,</span><span·class="w"> | |
| 145 | ···········</span><span·class="s">"/var/tmp/server_root/conf/8888_props.conf"</span><span·class="p"·data-group-id="4052849955-8">}</span><span·class="p"·data-group-id="4052849955-7">]</span><span·class="p"·data-group-id="4052849955-6">}</span><span·class="p">,</span><span·class="w"> | ||
| 146 | ··········</span><span·class="p"·data-group-id=" | 146 | ··········</span><span·class="p"·data-group-id="4052849955-9">{</span><span·class="ss">httpd</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4052849955-10">[</span><span·class="p"·data-group-id="4052849955-11">{</span><span·class="ss">proplist_file</span><span·class="p">,</span><span·class="w"> |
| 147 | ···········</span><span·class="s">"/var/tmp/server_root/conf/8080_props.conf"</span><span·class="p"·data-group-id=" | 147 | ···········</span><span·class="s">"/var/tmp/server_root/conf/8080_props.conf"</span><span·class="p"·data-group-id="4052849955-11">}</span><span·class="p"·data-group-id="4052849955-10">]</span><span·class="p"·data-group-id="4052849955-9">}</span><span·class="p"·data-group-id="4052849955-5">]</span><span·class="p"·data-group-id="4052849955-4">}</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·127,·SHA:·8f6477fdc98e9c6cc0c3737627d9ec5d8e4ea2b78cc3447709db5741af25af1d·...·]-1">]</span><span·class="p">.</span></code></pre><p>The·server·is·configured·using·an·Erlang·property·list.·For·the·available |
| 148 | properties,·see·<a·href="httpd.html"><code·class="inline">httpd</code></a>.</p><p>The·available·configuration·properties·are·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">httpd_service</span><span·class="p"·data-group-id=" | 148 | properties,·see·<a·href="httpd.html"><code·class="inline">httpd</code></a>.</p><p>The·available·configuration·properties·are·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">httpd_service</span><span·class="p"·data-group-id="3271818230-1">(</span><span·class="p"·data-group-id="3271818230-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="3271818230-2">{</span><span·class="ss">httpd</span><span·class="p">,</span[·...·truncated·by·diffoscope;·len:·200,·SHA:·850185ced8f4e885411f846966353ee848293c91bde56260ce5ebe3c1c921a86·...·]0-2">}</span><span·class="w"> |
| 149 | </span><span·class="nf">httpd</span><span·class="p"·data-group-id=" | 149 | </span><span·class="nf">httpd</span><span·class="p"·data-group-id="3271818230-4">(</span><span·class="p"·data-group-id="3271818230-4">)</span><span·class="w">·········</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="3271818230-5">[</span><span·class="nf">httpd_config</span><span·cl[·...·truncated·by·diffoscope;·len:·138,·SHA:·ba86b7bdeea48bb4ec3f7052f0a0bc31e49e62b127a0548febf3fa0455cd440d·...·]0-5">]</span><span·class="w"> |
| 150 | </span><span·class="nf">httpd_config</span><span·class="p"·data-group-id=" | 150 | </span><span·class="nf">httpd_config</span><span·class="p"·data-group-id="3271818230-7">(</span><span·class="p"·data-group-id="3271818230-7">)</span><span·class="w">··</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="3271818230-8">{</span><span·class="ss">proplist_file</span><span·class="p[·...·truncated·by·diffoscope;·len:·208,·SHA:·9359191d0fc6fa7a6c74eed340b66d803a141688ffb2dbaedd8a6f3aa33ca364·...·]0-8">}</span><span·class="w"> |
| 151 | ···················</span><span·class="p"·data-group-id=" | 151 | ···················</span><span·class="p"·data-group-id="3271818230-10">{</span><span·class="ss">debug</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">debug</span><span·class="p"·data-group-id="3271818230-11">(</span><span·class="p"·data-group-id="3271818230-11">)</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·21,·SHA:·7917bfa12048e55bd1e3a03316e0d1172925adf7d33cc848682bea15659d6412·...·]0-10">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 152 | ···················</span><span·class="p"·data-group-id=" | 152 | ···················</span><span·class="p"·data-group-id="3271818230-12">{</span><span·class="ss">accept_timeout</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="3271818230-13">(</span><span·class="p"·data-group-id="3271818230-13">)</span><span·cl[·...·truncated·by·diffoscope;·len:·32,·SHA:·ba22036bb41163b11967a9de687c3ded0b847afceb6c51c2b298f8fa38cf3a01·...·]0-12">}</span><span·class="w"> |
| 153 | </span><span·class="nf">debug</span><span·class="p"·data-group-id=" | 153 | </span><span·class="nf">debug</span><span·class="p"·data-group-id="3271818230-14">(</span><span·class="p"·data-group-id="3271818230-14">)</span><span·class="w">·········</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">disable</span><span·class="w">·</span><span·class="p">|</span><span·class="w">[·...·truncated·by·diffoscope;·len:·247,·SHA:·0c60494156794b948e34ec92605d727b5434c8922bbfb629abcb89c9a7c2e349·...·]0-15">]</span><span·class="w"> |
| 154 | </span><span·class="nf">debug_options</span><span·class="p"·data-group-id=" | 154 | </span><span·class="nf">debug_options</span><span·class="p"·data-group-id="3271818230-17">(</span><span·class="p"·data-group-id="3271818230-17">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="3271818230-18">{</span><span·class="ss">all_functions</span><span·class=[·...·truncated·by·diffoscope;·len:·215,·SHA:·53fa2fd088e75886ba287d55be3acef89385779839aeafafa7e565fa53bfdbcd·...·]0-18">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 155 | ···················</span><span·class="p"·data-group-id=" | 155 | ···················</span><span·class="p"·data-group-id="3271818230-20">{</span><span·class="ss">exported_functions</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">modules</span><span·class="p"·data-group-id="3271818230-21">(</span><span·class="p"·data-group-id="3271818230-21">)</span><spa[·...·truncated·by·diffoscope;·len:·36,·SHA:·867eb0511ba5df3cdc0fac172971a573af928cb535a8623904aa7e25a2b6d6fa·...·]0-20">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 156 | ···················</span><span·class="p"·data-group-id=" | 156 | ···················</span><span·class="p"·data-group-id="3271818230-22">{</span><span·class="ss">disable</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">modules</span><span·class="p"·data-group-id="3271818230-23">(</span><span·class="p"·data-group-id="3271818230-23">)</span><span·class="p"[·...·truncated·by·diffoscope;·len:·25,·SHA:·31a8a87dd4d34cb1bb70f4b478666ba2e986e50a2a488d65ba139ddc34e87dea·...·]0-22">}</span><span·class="w"> |
| 157 | </span><span·class="nf">modules</span><span·class="p"·data-group-id=" | 157 | </span><span·class="nf">modules</span><span·class="p"·data-group-id="3271818230-24">(</span><span·class="p"·data-group-id="3271818230-24">)</span><span·class="w">·······</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="3271818230-25">[</span><span·class="nf">atom</span><span·class="p"[·...·truncated·by·diffoscope;·len:·133,·SHA:·1448eb31a62fccec294fce5643be7fbe3e2be8b02bc6c8bd83a2db5c7c963d76·...·]0-25">]</span></code></pre><p>Here:</p><ul><li><p><strong><code·class="inline">{proplist_file,·file()}</code></strong>·-·File·containing·an·Erlang·property·list, |
| 158 | followed·by·a·full·stop,·describing·the·HTTP·server·configuration.</p></li><li><p><strong><code·class="inline">{debug,·debug()}</code></strong>·-·Can·enable·trace·on·all·functions·or·only·exported | 158 | followed·by·a·full·stop,·describing·the·HTTP·server·configuration.</p></li><li><p><strong><code·class="inline">{debug,·debug()}</code></strong>·-·Can·enable·trace·on·all·functions·or·only·exported |
| 159 | functions·on·chosen·modules.</p></li><li><p><strong><code·class="inline">{accept_timeout,·integer()}</code></strong>·-·Sets·the·wanted·time-out·value·for·the | 159 | functions·on·chosen·modules.</p></li><li><p><strong><code·class="inline">{accept_timeout,·integer()}</code></strong>·-·Sets·the·wanted·time-out·value·for·the |
| 160 | server·to·set·up·a·request·connection.</p></li></ul><h2·id="getting-started"·class="section-heading"> | 160 | server·to·set·up·a·request·connection.</p></li></ul><h2·id="getting-started"·class="section-heading"> |
| 161 | ··<a·href="#getting-started"·class="hover-link"> | 161 | ··<a·href="#getting-started"·class="hover-link"> |
| 162 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 162 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 163 | ··</a> | 163 | ··</a> |
| 164 | ··<span·class="text">Getting·Started</span> | 164 | ··<span·class="text">Getting·Started</span> |
| 165 | </h2> | 165 | </h2> |
| 166 | <p><a·href=""·id="using_http_server_api"></a></p><p>Start·<code·class="inline">Inets</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">inets</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 166 | <p><a·href=""·id="using_http_server_api"></a></p><p>Start·<code·class="inline">Inets</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">inets</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="7289499843-1">(</span><span·class="p"·data-group-id="7289499843-1">)</span><span·class="p">.</span><span·class="w"> |
| 167 | </span><span·class="ss">ok</span></code></pre><p>Start·an·HTTP·server·with·minimal·required·configuration.·If·you·specify·port | 167 | </span><span·class="ss">ok</span></code></pre><p>Start·an·HTTP·server·with·minimal·required·configuration.·If·you·specify·port |
| 168 | <code·class="inline">0</code>,·an·arbitrary·available·port·is·used,·and·you·can·use·function·<code·class="inline">info</code>·to | 168 | <code·class="inline">0</code>,·an·arbitrary·available·port·is·used,·and·you·can·use·function·<code·class="inline">info</code>·to |
| 169 | find·which·port·number·that·was·picked:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="p"·data-group-id=" | 169 | find·which·port·number·that·was·picked:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="p"·data-group-id="9254231071-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pid</span><span·class="p"·data-group-id="9254231071-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·cla[·...·truncated·by·diffoscope;·len:·703,·SHA:·995004be9440285dd0f8762958b4cd076d086b1ed5ebefa5f25588e3d1772400·...·]-5">}</span><span·class="p">,</span><span·class="w"> |
| 170 | </span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="p"·data-group-id=" | 170 | </span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="p"·data-group-id="9254231071-6">{</span><span·class="ss">document_root</span><span·class="p">,</span><span·class="s">"/tmp/htdocs"</span><span·class="p"·data-group-id="9254231071-6">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·302,·SHA:·6f156143ce8f04b852ffd22cfbfa04f9c3a7574d9307c91beb35cabc74b24911·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 171 | </span><span·class="p"·data-group-id=" | 171 | </span><span·class="p"·data-group-id="9254231071-8">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="mf">0.79</span><span·class="p">.</span><span·class="mi">0</span><span·class="p"·data-group-id="9254231071-8">}</span></code></pre><p>Call·<code·cla[·...·truncated·by·diffoscope;·len:·320,·SHA:·c3fbfbc7d19d74e9b6c3b00ebc760a47f10123f422a6944f0ceea1f9d05f0334·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 172 | </span><span·class="p"·data-group-id=" | 172 | </span><span·class="p"·data-group-id="7960973017-2">[</span><span·class="p"·data-group-id="7960973017-3">{</span><span·class="ss">mime_types</span><span·class="p">,</span><span·class="p"·data-group-id="7960973017-4">[</span><span·class="p"·data-group-id="7960973017-5">{</span><span·class="s">&[·...·truncated·by·diffoscope;·len:·473,·SHA:·924fbda9e37774cd68fd991a01c54263277fcfdbea2f2b0e3baa9b05e633b4d9·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 173 | ·</span><span·class="p"·data-group-id=" | 173 | ·</span><span·class="p"·data-group-id="7960973017-7">{</span><span·class="ss">server_name</span><span·class="p">,</span><span·class="s">"machine.local"</span><span·class="p"·data-group-id="7960973017-7">}</span><span·class="p">,</span><span·class="w"> |
| 174 | ·</span><span·class="p"·data-group-id=" | 174 | ·</span><span·class="p"·data-group-id="7960973017-8">{</span><span·class="ss">bind_address</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7960973017-9">{</span><span·class="mi">127</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</sp[·...·truncated·by·diffoscope;·len:·171,·SHA:·58022365b4119283a2ab09752f6884c5ec18cc1c3707c14d1f50a7e63e526437·...·]-8">}</span><span·class="p">,</span><span·class="w"> |
| 175 | ·</span><span·class="p"·data-group-id=" | 175 | ·</span><span·class="p"·data-group-id="7960973017-10">{</span><span·class="ss">server_root</span><span·class="p">,</span><span·class="s">"/tmp"</span><span·class="p"·data-group-id="7960973017-10">}</span><span·class="p">,</span><span·class="w"> |
| 176 | ·</span><span·class="p"·data-group-id=" | 176 | ·</span><span·class="p"·data-group-id="7960973017-11">{</span><span·class="ss">port</span><span·class="p">,</span><span·class="mi">59408</span><span·class="p"·data-group-id="7960973017-11">}</span><span·class="p">,</span><span·class="w"> |
| 177 | ·</span><span·class="p"·data-group-id=" | 177 | ·</span><span·class="p"·data-group-id="7960973017-12">{</span><span·class="ss">document_root</span><span·class="p">,</span><span·class="s">"/tmp/htdocs"</span><span·class="p"·data-group-id="7960973017-12">}</span><span·class="p">,</span><span·class="w"> |
| 178 | ·</span><span·class="p"·data-group-id=" | 178 | ·</span><span·class="p"·data-group-id="7960973017-13">{</span><span·class="ss">ipfamily</span><span·class="p">,</span><span·class="ss">inet</span><span·class="p"·data-group-id="7960973017-13">}</span><span·class="p"·data-group-id="7960973017-2">]</span></code></pre><p>Reload·the·configuration·w[·...·truncated·by·diffoscope;·len:·519,·SHA:·01c5c1c583e80720293e949bb3d312a665baec178a601890d1f6beac4994ec40·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 179 | </span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="p"·data-group-id="87 | 179 | </span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="p"·data-group-id="5873750375-4">{</span><span·class="ss">server_root</span><span·class="p">,</span><span·class="s">"/tmp/www_test"</span><span·class="p"·data-group-id="5873750375-4">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·184,·SHA:·642c0162cfabdd49f112f2af61dc3c7c940f2c7f3c36339bda137917e70121c4·...·]-5">}</span><span·class="p">,</span><span·class="w"> |
| 180 | </span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="p"·data-group-id="87 | 180 | </span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="p"·data-group-id="5873750375-6">{</span><span·class="ss">bind_address</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"localhost"</span><span·class="p"·data-group-id="5873750375-6">}</span><span·class="p"·data-group-id="5873750375-2">]</span>[·...·truncated·by·diffoscope;·len:·127,·SHA:·bf09bb5fd6252d8dc33e03960314567afc6116c351db5dcdde836ea4f585e00e·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 181 | </span><span·class="ss">ok</span><span·class="p">.</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p><code·class="inline">port</code>·and·<code·class="inline">bind_address</code>·cannot·be·changed.·Clients·trying·to·access·the | 181 | </span><span·class="ss">ok</span><span·class="p">.</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p><code·class="inline">port</code>·and·<code·class="inline">bind_address</code>·cannot·be·changed.·Clients·trying·to·access·the |
| 182 | server·during·the·reload·get·a·service·temporary·unavailable·answer.</p></section><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">5>·</span><span·class="nc">httpd</span><span·class="p">:</span><span·class="nf">info</span><span·class="p"·data-group-id=" | 182 | server·during·the·reload·get·a·service·temporary·unavailable·answer.</p></section><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">5>·</span><span·class="nc">httpd</span><span·class="p">:</span><span·class="nf">info</span><span·class="p"·data-group-id="2883269752-1">(</span><span·class="n">Pid</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2883269752-2">[</span><span·class="ss">server_root</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">documen[·...·truncated·by·diffoscope;·len:·107,·SHA:·c75381f11c9203deb4f48ce5b7887dcd56838e2cdf7f1dbde60a1a049195e657·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 183 | </span><span·class="p"·data-group-id=" | 183 | </span><span·class="p"·data-group-id="2883269752-3">[</span><span·class="p"·data-group-id="2883269752-4">{</span><span·class="ss">server_root</span><span·class="p">,</span><span·class="s">"/tmp/www_test"</span><span·class="p"·data-group-id="2883269752-4">}</span><span·class="p">,</sp[·...·truncated·by·diffoscope;·len:·1730,·SHA:·4d5558aff1d595caeb8f3c0bb0e2737235c677f2436b3f965a428c3881232a21·...·]-1">)</span><span·class="p">.</span></code></pre><p>Notice·that·<code·class="inline">bind_address</code>·must·be·the·IP·address·reported·by·function·<code·class="inline">info</code> |
| 184 | and·cannot·be·the·hostname·that·is·allowed·when·putting·in·<code·class="inline">bind_address</code>.</p><h2·id="dynamic-web-pages"·class="section-heading"> | 184 | and·cannot·be·the·hostname·that·is·allowed·when·putting·in·<code·class="inline">bind_address</code>.</p><h2·id="dynamic-web-pages"·class="section-heading"> |
| 185 | ··<a·href="#dynamic-web-pages"·class="hover-link"> | 185 | ··<a·href="#dynamic-web-pages"·class="hover-link"> |
| 186 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 186 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 187 | ··</a> | 187 | ··</a> |
| 188 | ··<span·class="text">Dynamic·Web·Pages</span> | 188 | ··<span·class="text">Dynamic·Web·Pages</span> |
| 189 | </h2> | 189 | </h2> |
| 190 | <p><a·href=""·id="dynamic_we_pages"></a></p><p><code·class="inline">Inets</code>·HTTP·server·provides·two·ways·of·creating·dynamic·web·pages,·each·with | 190 | <p><a·href=""·id="dynamic_we_pages"></a></p><p><code·class="inline">Inets</code>·HTTP·server·provides·two·ways·of·creating·dynamic·web·pages,·each·with |
| Offset 301, 36 lines modified | Offset 301, 36 lines modified | ||
| 301 | files,·Dets·databases·as·well·as·Mnesia·databases.</p><p>Uses·the·following·Erlang·Web·Server·API·interaction·data:</p><ul><li><code·class="inline">real_name</code>·-·from·<a·href="mod_alias.html"><code·class="inline">mod_alias</code></a></li></ul><p>Exports·the·following·Erlang·Web·Server·API·interaction·data:</p><ul><li><strong><code·class="inline">{remote_user,·User}</code></strong>·-·The·username·used·for·authentication.</li></ul><h4>Mnesia·As·Authentication·Database</h4><p>If·Mnesia·is·used·as·storage·method,·Mnesia·must·be·started·before·the·HTTP | 301 | files,·Dets·databases·as·well·as·Mnesia·databases.</p><p>Uses·the·following·Erlang·Web·Server·API·interaction·data:</p><ul><li><code·class="inline">real_name</code>·-·from·<a·href="mod_alias.html"><code·class="inline">mod_alias</code></a></li></ul><p>Exports·the·following·Erlang·Web·Server·API·interaction·data:</p><ul><li><strong><code·class="inline">{remote_user,·User}</code></strong>·-·The·username·used·for·authentication.</li></ul><h4>Mnesia·As·Authentication·Database</h4><p>If·Mnesia·is·used·as·storage·method,·Mnesia·must·be·started·before·the·HTTP |
| 302 | server.·The·first·time·Mnesia·is·started,·the·schema·and·the·tables·must·be | 302 | server.·The·first·time·Mnesia·is·started,·the·schema·and·the·tables·must·be |
| 303 | created·before·Mnesia·is·started.·A·simple·example·of·a·module·with·two | 303 | created·before·Mnesia·is·started.·A·simple·example·of·a·module·with·two |
| 304 | functions·that·creates·and·start·Mnesia·is·provided·here.·Function | 304 | functions·that·creates·and·start·Mnesia·is·provided·here.·Function |
| 305 | <code·class="inline">first_start/0</code>·is·to·be·used·the·first·time.·It·creates·the·schema·and·the | 305 | <code·class="inline">first_start/0</code>·is·to·be·used·the·first·time.·It·creates·the·schema·and·the |
| 306 | tables.·<code·class="inline">start/0</code>·is·to·be·used·in·consecutive·startups.·<code·class="inline">start/0</code>·starts·Mnesia | 306 | tables.·<code·class="inline">start/0</code>·is·to·be·used·in·consecutive·startups.·<code·class="inline">start/0</code>·starts·Mnesia |
| 307 | and·waits·for·the·tables·to·be·initiated.·This·function·must·only·be·used·when | 307 | and·waits·for·the·tables·to·be·initiated.·This·function·must·only·be·used·when |
| 308 | the·schema·and·the·tables·are·already·created.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="0726219256-1">(</span><span·class="ss">mnesia_test</span><span·class="p"·data-group-id="0726219256-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 309 | 308 | the·schema·and·the·tables·are·already·created.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="1830684759-1">(</span><span·class="ss">mnesia_test</span><span·class="p"·[·...·truncated·by·diffoscope;·len:·27,·SHA:·c35c992088e0ee2391b4dff1fc0837551af1d0771d266a7be6e41c55e4b9c774·...·]">)</span><span·class="p">.</span><span·class="w"> | |
| 309 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="1830684759-2">(</span><span·class="p"·data-group-id="1830684759-3">[</span><span·class="ss">start</span><span·class="p">/</span><span·class="mi">0</span><span·class="p">,</span><span·class="ss">load_data</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data-group-id="1830684759-3">]</span><span·class="p"·data-group-id="1830684759-2">)</span><span·class="p">.</span><span·class="w"> | ||
| 310 | </span><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id=" | 310 | </span><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="1830684759-4">(</span><span·class="s">"mod_auth.hrl"</span><span·class="p"·data-group-id="1830684759-4">)</span><span·class="p">.</span><span·class="w"> |
| 311 | </span><span·class="nf">first_start</span><span·class="p"·data-group-id=" | 311 | </span><span·class="nf">first_start</span><span·class="p"·data-group-id="1830684759-5">(</span><span·class="p"·data-group-id="1830684759-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 312 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_schema</span><span·class="p"·data-group-id=" | 312 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_schema</span><span·class="p"·data-group-id="1830684759-6">(</span><span·class="p"·data-group-id="1830684759-7">[</span><span·class="nf">node</span><span·class="p"·data-group-id="1830684759-8">(</span><span·class="p"·data-group-id="1830684759-8">)</span><span·class="p"·data-group-id="1830684759-7">]<[·...·truncated·by·diffoscope;·len:·47,·SHA:·9145a6349a65b77ea6e817ea1e54c95f80c5673b0a2039559cf0e5d2c71fe747·...·]-6">)</span><span·class="p">,</span><span·class="w"> |
| 313 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 313 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="1830684759-9">(</span><span·class="p"·data-group-id="1830684759-9">)</span><span·class="p">,</span><span·class="w"> |
| 314 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id=" | 314 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id="1830684759-10">(</span><span·class="ss">httpd_user</span><span·class="p">,</span><span·class="w"> |
| 315 | ························</span><span·class="p"·data-group-id=" | 315 | ························</span><span·class="p"·data-group-id="1830684759-11">[</span><span·class="p"·data-group-id="1830684759-12">{</span><span·class="ss">type</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">bag</span><span·class="p"·data-group-id="1830684759-12">}</span><span·class="p">,</span><span·class="w"> |
| 316 | ·························</span><span·class="p"·data-group-id=" | 316 | ·························</span><span·class="p"·data-group-id="1830684759-13">{</span><span·class="ss">disc_copies</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1830684759-14">[</span><span·class="nf">node</span><span·class="p"·data-group-id="1830684759-15">(</span><span·class="p[·...·truncated·by·diffoscope;·len:·135,·SHA:·364fa9000364c644788eff4581a638b9f3ccdf0c30abf262839315916b3e3bc0·...·]-13">}</span><span·class="p">,</span><span·class="w"> |
| 317 | ·························</span><span·class="p"·data-group-id=" | 317 | ·························</span><span·class="p"·data-group-id="1830684759-16">{</span><span·class="ss">attributes</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">record_info</span><span·class="p"·data-group-id="1830684759-17">(</span><span·class="ss">fields</span><span·class="p">,</span><span·class="w"> |
| 318 | ··················································</span><span·class="ss">httpd_user</span><span·class="p"·data-group-id=" | 318 | ··················································</span><span·class="ss">httpd_user</span><span·class="p"·data-group-id="1830684759-17">)</span><span·class="p"·data-group-id="1830684759-16">}</span><span·class="p"·data-group-id="1830684759-11">]</span><span·class="p"·data-group-id="1830684759-10">)</span><span·class="p">,</span><span·class="w"> |
| 319 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id=" | 319 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id="1830684759-18">(</span><span·class="ss">httpd_group</span><span·class="p">,</span><span·class="w"> |
| 320 | ························</span><span·class="p"·data-group-id=" | 320 | ························</span><span·class="p"·data-group-id="1830684759-19">[</span><span·class="p"·data-group-id="1830684759-20">{</span><span·class="ss">type</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">bag</span><span·class="p"·data-group-id="1830684759-20">}</span><span·class="p">,</span><span·class="w"> |
| 321 | ·························</span><span·class="p"·data-group-id=" | 321 | ·························</span><span·class="p"·data-group-id="1830684759-21">{</span><span·class="ss">disc_copies</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1830684759-22">[</span><span·class="nf">node</span><span·class="p"·data-group-id="1830684759-23">(</span><span·class="p[·...·truncated·by·diffoscope;·len:·135,·SHA:·e7a2b2e8f3bb061d58bf25c71500d111502608dbe01562ffd07453cb6a6a7b07·...·]-21">}</span><span·class="p">,</span><span·class="w"> |
| 322 | ·························</span><span·class="p"·data-group-id="0726219256-24">{</span><span·class="ss">attributes</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">record_info</span><span·class="p"·data-group-id="0726219256-25">(</span><span·class="ss">fields</span><span·class="p">,</span><span·class="w"> | ||
| 323 | ························· | 322 | ·························</span><span·class="p"·data-group-id="1830684759-24">{</span><span·class="ss">attributes</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">record_info</span><span·class="p"·data-group-id="1830684759-25">(</span><span·class="ss">fields</span><span·class="p">,</span><span·class="w"> |
| 323 | ··················································</span><span·class="ss">httpd_group</span><span·class="p"·data-group-id="1830684759-25">)</span><span·class="p"·data-group-id="1830684759-24">}</span><span·class="p"·data-group-id="1830684759-19">]</span><span·class="p"·data-group-id="1830684759-18">)</span><span·class="p">,</span><span·class="w"> | ||
| 324 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">wait_for_tables</span><span·class="p"·data-group-id=" | 324 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">wait_for_tables</span><span·class="p"·data-group-id="1830684759-26">(</span><span·class="p"·data-group-id="1830684759-27">[</span><span·class="ss">httpd_user</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">httpd_group</span><span·class="p"·data-group-id="1830684759-27">]</span><span·cl[·...·truncated·by·diffoscope;·len:·110,·SHA:·5e20e57eff1fa1f336778eb99aa00b713aad255c6b5f0acd1a8bb2ed5c9b7948·...·]-26">)</span><span·class="p">.</span><span·class="w"> |
| 325 | </span><span·class="nf">start</span><span·class="p"·data-group-id=" | 325 | </span><span·class="nf">start</span><span·class="p"·data-group-id="1830684759-28">(</span><span·class="p"·data-group-id="1830684759-28">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 326 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 326 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="1830684759-29">(</span><span·class="p"·data-group-id="1830684759-29">)</span><span·class="p">,</span><span·class="w"> |
| 327 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">wait_for_tables</span><span·class="p"·data-group-id=" | 327 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">wait_for_tables</span><span·class="p"·data-group-id="1830684759-30">(</span><span·class="p"·data-group-id="1830684759-31">[</span><span·class="ss">httpd_user</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">httpd_group</span><span·class="p"·data-group-id="1830684759-31">]</span><span·cl[·...·truncated·by·diffoscope;·len:·110,·SHA:·5e20e57eff1fa1f336778eb99aa00b713aad255c6b5f0acd1a8bb2ed5c9b7948·...·]-30">)</span><span·class="p">.</span></code></pre><p>To·create·the·Mnesia·tables,·we·use·two·records·defined·in·<code·class="inline">mod_auth.hrl</code>,·so |
| 328 | that·file·must·be·included.·<code·class="inline">first_start/0</code>·creates·a·schema·that·specifies·on | 328 | that·file·must·be·included.·<code·class="inline">first_start/0</code>·creates·a·schema·that·specifies·on |
| 329 | which·nodes·the·database·is·to·reside.·Then·it·starts·Mnesia·and·creates·the | 329 | which·nodes·the·database·is·to·reside.·Then·it·starts·Mnesia·and·creates·the |
| 330 | tables.·The·first·argument·is·the·name·of·the·tables,·the·second·argument·is·a | 330 | tables.·The·first·argument·is·the·name·of·the·tables,·the·second·argument·is·a |
| 331 | list·of·options·of·how·to·create·the·table,·see·<a·href="../../../../lib/mnesia-4.23.4/doc/html/mnesia.html"><code·class="inline">mnesia</code></a>,·documentation·for | 331 | list·of·options·of·how·to·create·the·table,·see·<a·href="../../../../lib/mnesia-4.23.4/doc/html/mnesia.html"><code·class="inline">mnesia</code></a>,·documentation·for |
| 332 | more·information.·As·the·implementation·of·the·<code·class="inline">mod_auth_mnesia</code>·saves·one·row | 332 | more·information.·As·the·implementation·of·the·<code·class="inline">mod_auth_mnesia</code>·saves·one·row |
| 333 | for·each·user,·the·type·must·be·<code·class="inline">bag</code>.·When·the·schema·and·the·tables·are | 333 | for·each·user,·the·type·must·be·<code·class="inline">bag</code>.·When·the·schema·and·the·tables·are |
| 334 | created,·function·<a·href="../../../../lib/mnesia-4.23.4/doc/html/mnesia.html#start/0"><code·class="inline">mnesia:start/0</code></a>·is·used·to·start·Mnesia·and·waits·for·the | 334 | created,·function·<a·href="../../../../lib/mnesia-4.23.4/doc/html/mnesia.html#start/0"><code·class="inline">mnesia:start/0</code></a>·is·used·to·start·Mnesia·and·waits·for·the |
| Offset 1037, 21 lines modified | Offset 1037, 21 lines modified | ||
| 1037 | options.</p></section><p>By·default·the·socket·options·set·by·function | 1037 | options.</p></section><p>By·default·the·socket·options·set·by·function |
| 1038 | <a·href="#set_options/1">set_options/1,2</a>·are·used·when·establishing·a·connection.</p></li><li><p><strong><code·class="inline">receiver</code></strong>·-·Defines·how·the·client·delivers·the·result·of·an·asynchronous | 1038 | <a·href="#set_options/1">set_options/1,2</a>·are·used·when·establishing·a·connection.</p></li><li><p><strong><code·class="inline">receiver</code></strong>·-·Defines·how·the·client·delivers·the·result·of·an·asynchronous |
| 1039 | request·(<code·class="inline">sync</code>·has·the·value·<code·class="inline">false</code>).</p><ul><li><p><strong><a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:pid/0"><code·class="inline">pid/0</code></a></strong>·-·Messages·are·sent·to·this·process·in·the·format | 1039 | request·(<code·class="inline">sync</code>·has·the·value·<code·class="inline">false</code>).</p><ul><li><p><strong><a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:pid/0"><code·class="inline">pid/0</code></a></strong>·-·Messages·are·sent·to·this·process·in·the·format |
| 1040 | <code·class="inline">{http,·ReplyInfo}</code>.</p></li><li><p><strong><a·href="../../../../erts-15.2.3/doc/html/erlang.html#alias/0"><code·class="inline">alias/0</code></a></strong>·-·Messages·are·sent·to·this·special·reference·in·the·format | 1040 | <code·class="inline">{http,·ReplyInfo}</code>.</p></li><li><p><strong><a·href="../../../../erts-15.2.3/doc/html/erlang.html#alias/0"><code·class="inline">alias/0</code></a></strong>·-·Messages·are·sent·to·this·special·reference·in·the·format |
| 1041 | <code·class="inline">{http,·ReplyInfo}</code>.</p></li><li><p><strong><code·class="inline">function/1</code></strong>·-·Information·is·delivered·to·the·receiver·through·calls·to | 1041 | <code·class="inline">{http,·ReplyInfo}</code>.</p></li><li><p><strong><code·class="inline">function/1</code></strong>·-·Information·is·delivered·to·the·receiver·through·calls·to |
| 1042 | the·provided·fun·<code·class="inline">Receiver(ReplyInfo)</code>.</p></li><li><p><strong><code·class="inline">{Module,·Function,·Args}</code></strong>·-·Information·is·delivered·to·the·receiver | 1042 | the·provided·fun·<code·class="inline">Receiver(ReplyInfo)</code>.</p></li><li><p><strong><code·class="inline">{Module,·Function,·Args}</code></strong>·-·Information·is·delivered·to·the·receiver |
| 1043 | through·calls·to·the·callback·function | 1043 | through·calls·to·the·callback·function |
| 1044 | <a·href="../../../../erts-15.2.3/doc/html/erlang.html#apply/3"><code·class="inline">apply(Module,·Function,·[ReplyInfo·|·Args])</code></a>.</p></li></ul><p>In·all·of·these·cases,·<code·class="inline">ReplyInfo</code>·has·the·following·structure:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="p"·data-group-id=" | 1044 | <a·href="../../../../erts-15.2.3/doc/html/erlang.html#apply/3"><code·class="inline">apply(Module,·Function,·[ReplyInfo·|·Args])</code></a>.</p></li></ul><p>In·all·of·these·cases,·<code·class="inline">ReplyInfo</code>·has·the·following·structure:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="p"·data-group-id="6501495603-1">{</span><span·class="n">RequestId</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">saved_to_file</span><span·class="p"·data-group-id="6501495603-1">}</span><span·class="w"> |
| 1045 | ·</span><span·class="p"·data-group-id=" | 1045 | ·</span><span·class="p"·data-group-id="6501495603-2">{</span><span·class="n">RequestId</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6501495603-3">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</[·...·truncated·by·diffoscope;·len:·99,·SHA:·13b2394da027b2a305ccf67a1a92c608ccfbc54d7a093c7d0ac2a4c5f00d4675·...·]-2">}</span><span·class="w"> |
| 1046 | ·</span><span·class="p"·data-group-id=" | 1046 | ·</span><span·class="p"·data-group-id="6501495603-4">{</span><span·class="n">RequestId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Result</span><span·class="p"·data-group-id="6501495603-4">}</span><span·class="w"> |
| 1047 | ·</span><span·class="p"·data-group-id=" | 1047 | ·</span><span·class="p"·data-group-id="6501495603-5">{</span><span·class="n">RequestId</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">stream_start</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Headers</span><span·class="p"·data-group-id="650149560[·...·truncated·by·diffoscope;·len:·1,·SHA:·4e07408562bedb8b60ce05c1decfe3ad16b72230967de01f640b7e4729b49fce·...·]-5">}</span><span·class="w"> |
| 1048 | ·</span><span·class="p"·data-group-id=" | 1048 | ·</span><span·class="p"·data-group-id="6501495603-6">{</span><span·class="n">RequestId</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">stream_start</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Headers</span><span·class="p">,</span><span·class="w">[·...·truncated·by·diffoscope;·len:·82,·SHA:·4bf12d5c3fcb9011d5a81c58d7a5aa8ab7e34eef6eef9b0ed5d9491b9805ee2e·...·]-6">}</span><span·class="w"> |
| 1049 | ·</span><span·class="p"·data-group-id=" | 1049 | ·</span><span·class="p"·data-group-id="6501495603-7">{</span><span·class="n">RequestId</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">stream</span><span·class="p">,</span><span·class="w">·</span><span·class="n">BinBodyPart</span><span·class="p"·data-group-id="6501495603-7">}</span><span·class="w"> |
| 1050 | ·</span><span·class="p"·data-group-id=" | 1050 | ·</span><span·class="p"·data-group-id="6501495603-8">{</span><span·class="n">RequestId</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">stream_end</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Headers</span><span·class="p"·data-group-id="6501495603-8">}</span></code></pre><p>Default·is·the·<code·class="inline">pid</code>·of·the·process·calling·the·request·function·(<a·href="../../../../erts-15.2.3/doc/html/erlang.html#self/0"><code·class="inline">self/0</code></a>).</p><p><a·href=""·id="ipv6_host_with_brackets"></a></p></li><li><p><strong><code·class="inline">ipv6_host_with_brackets</code></strong>·-·Defines·when·parsing·the·Host-Port·part·of·an |
| 1051 | URI·with·an·IPv6·address·with·brackets,·if·those·brackets·are·to·be·retained | 1051 | URI·with·an·IPv6·address·with·brackets,·if·those·brackets·are·to·be·retained |
| 1052 | (<code·class="inline">true</code>)·or·stripped·(<code·class="inline">false</code>).</p><p>Default·is·<code·class="inline">false</code>.</p></li></ul> | 1052 | (<code·class="inline">true</code>)·or·stripped·(<code·class="inline">false</code>).</p><p>Default·is·<code·class="inline">false</code>.</p></li></ul> |
| 1053 | ··</section> | 1053 | ··</section> |
| 1054 | </section> | 1054 | </section> |
| 1055 | <section·class="detail"·id="reset_cookies/0"> | 1055 | <section·class="detail"·id="reset_cookies/0"> |
| 1056 | ··<div·class="detail-header"> | 1056 | ··<div·class="detail-header"> |
| Offset 246, 57 lines modified | Offset 246, 57 lines modified | ||
| 246 | }</code></pre><p>An·example·of·a·log·entry·with·only·default·settings·of·logger</p><pre><code·class="text">=ERROR·REPORT====·9-Oct-2019::09:33:27.350235·=== | 246 | }</code></pre><p>An·example·of·a·log·entry·with·only·default·settings·of·logger</p><pre><code·class="text">=ERROR·REPORT====·9-Oct-2019::09:33:27.350235·=== |
| 247 | ···Server:·My·Server | 247 | ···Server:·My·Server |
| 248 | ·Protocol:·HTTP | 248 | ·Protocol:·HTTP |
| 249 | Transport:·TLS | 249 | Transport:·TLS |
| 250 | ······URI:·/not_there | 250 | ······URI:·/not_there |
| 251 | ·····Host:·127.0.1.1:80 | 251 | ·····Host:·127.0.1.1:80 |
| 252 | ·····Peer:·127.0.0.1:45253 | 252 | ·····Peer:·127.0.0.1:45253 |
| 253 | ···Reason:·[{statuscode,404},{description,"Object·Not·Found"}]</code></pre><p>Using·this·option·makes·mod_log·and·mod_disk_log·error·logs·redundant.</p><p>Add·the·filter</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 253 | ···Reason:·[{statuscode,404},{description,"Object·Not·Found"}]</code></pre><p>Using·this·option·makes·mod_log·and·mod_disk_log·error·logs·redundant.</p><p>Add·the·filter</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8015000735-1">{</span><span·class="k">fun</span><span·class="w">·</span><span·class="nc">logger_filters</span><span·class="p">:</span><span·class="ss">domain</span><span·class="p">/</span><span·class="mi">2</span><span·class="p">,</span><span·class="w"> |
| 254 | ····</span><span·class="p"·data-group-id=" | 254 | ····</span><span·class="p"·data-group-id="8015000735-2">{</span><span·class="ss">log</span><span·class="p">,</span><span·class="ss">equal</span><span·class="p">,</span><span·class="p"·data-group-id="8015000735-3">[</span><span·class="ss">otp</span><span·class="p">,</span><span·class="ss">inets</sp[·...·truncated·by·diffoscope;·len:·330,·SHA:·fe4e0d0f008e24b30716aa8c10e61d2d4748c295b5285bf1d56e6de760743c28·...·]-2">}</span></code></pre><p>to·appropriate·logger·handler·to·handle·the·events.·For·example·to·write·the |
| 255 | error·log·from·an·httpd·server·with·a·<code·class="inline">ServerID</code>·of·<code·class="inline">my_server</code>·to·a·file | 255 | error·log·from·an·httpd·server·with·a·<code·class="inline">ServerID</code>·of·<code·class="inline">my_server</code>·to·a·file |
| 256 | you·can·use·the·following·sys.config:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 256 | you·can·use·the·following·sys.config:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="6577403485-1">[</span><span·class="p"·data-group-id="6577403485-2">{</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="w"> |
| 257 | ·</span><span·class="p"·data-group-id=" | 257 | ·</span><span·class="p"·data-group-id="6577403485-3">[</span><span·class="p"·data-group-id="6577403485-4">{</span><span·class="ss">logger</span><span·class="p">,</span><span·class="w"> |
| 258 | ··</span><span·class="p"·data-group-id=" | 258 | ··</span><span·class="p"·data-group-id="6577403485-5">[</span><span·class="p"·data-group-id="6577403485-6">{</span><span·class="ss">handler</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">http_error_test</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">logger_std_h</span><span·class="p">,</span><span·class="w"> |
| 259 | ····</span><span·class="p"·data-group-id=" | 259 | ····</span><span·class="p"·data-group-id="6577403485-7">#{</span><span·class="ss">config</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="6577403485-8">#{</span><span·class="w">·</span><span·class="ss">file</span><span·class="w">·</sp[·...·truncated·by·diffoscope;·len:·173,·SHA:·d08190046d9385202b37a0ec573f6046a2b3fe37a4d183cf4d9a0a1517f04b9d·...·]-8">}</span><span·class="p">,</span><span·class="w"> |
| 260 | ······</span><span·class="ss">filters</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 260 | ······</span><span·class="ss">filters</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="6577403485-9">[</span><span·class="p"·data-group-id="6577403485-10">{</span><span·class="ss">inets_httpd</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6577403485-11">{</span><span·class="k">fun</span><span·class="w">·</span><span·class="nc">logger_filters</span><span·class="p">:</span><span·class="ss">domain</span><span·class="p">/</span><span·class="mi">2</span><span·class="p">,</span><span·class="w"> |
| 261 | ·································</span><span·class="p"·data-group-id=" | 261 | ·································</span><span·class="p"·data-group-id="6577403485-12">{</span><span·class="ss">log</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">equal</span><span·class="p">,</span><span·class="w"> |
| 262 | ··································</span><span·class="p"·data-group-id=" | 262 | ··································</span><span·class="p"·data-group-id="6577403485-13">[</span><span·class="ss">otp</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">inets</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">httpd</span><span·class="p">,</span><span·class="w">·</span><spa[·...·truncated·by·diffoscope;·len:·147,·SHA:·744f960a4f5899a150ecbcffaf14d9b5eb90520ff7fc455a1b358b911217fc8c·...·]-13">]</span><span·class="w"> |
| 263 | ·································</span><span·class="p"·data-group-id="9772377098-12">}</span><span·class="p"·data-group-id="9772377098-11">}</span><span·class="p"·data-group-id="9772377098-10">}</span><span·class="p"·data-group-id="9772377098-9">]</span><span·class="p">,</span><span·class="w"> | ||
| 264 | ······ | 263 | ·································</span><span·class="p"·data-group-id="6577403485-12">}</span><span·class="p"·data-group-id="6577403485-11">}</span><span·class="p"·data-group-id="6577403485-10">}</span><span·class="p"·data-group-id="6577403485-9">]</span><span·class="p">,</span><span·class="w"> |
| 264 | ······</span><span·class="ss">filter_default</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">stop</span><span·class="w">·</span><span·class="p"·data-group-id="6577403485-7">}</span><span·class="p"·data-group-id="6577403485-6">}</span><span·class="p"·data-group-id="6577403485-5">]</span><span·class="p"·data-group-id="6577403485-4">}</span><span·class="p"·data-group-id="6577403485-3">]</span><span·class="p"·data-group-id="6577403485-2">}</span><span·class="p"·data-group-id="6577403485-1">]</span><span·class="p">.</span></code></pre><p>or·if·you·want·to·add·it·to·the·default·logger·via·an·API:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">add_handler_filter</span><span·class="p"·data-group-id="5365695650-1">(</span><span·class="ss">default</span><span·class="p">,</span><span·class="w"> | ||
| 265 | ··························</span><span·class="ss">inets_httpd</span><span·class="p">,</span><span·class="w"> | 265 | ··························</span><span·class="ss">inets_httpd</span><span·class="p">,</span><span·class="w"> |
| 266 | ··························</span><span·class="p"·data-group-id=" | 266 | ··························</span><span·class="p"·data-group-id="5365695650-2">{</span><span·class="k">fun</span><span·class="w">·</span><span·class="nc">logger_filters</span><span·class="p">:</span><span·class="ss">domain</span><span·class="p">/</span><span·class="mi">2</span><span·class="p">,</span><span·class="w"> |
| 267 | ···························</span><span·class="p"·data-group-id=" | 267 | ···························</span><span·class="p"·data-group-id="5365695650-3">{</span><span·class="ss">log</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">equal</span><span·class="p">,</span><span·class="w"> |
| 268 | ····························</span><span·class="p"·data-group-id=" | 268 | ····························</span><span·class="p"·data-group-id="5365695650-4">[</span><span·class="ss">otp</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">inets</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">httpd</span><span·class="p">,</span><span·class="w">·</span><span[·...·truncated·by·diffoscope;·len:·305,·SHA:·91c1e8b7e4c876979f2a88498669ecef34f6d7e7934769ca08394ff11191055a·...·]-1">)</span><span·class="p">.</span></code></pre></li></ul></li><li><p><a·href=""·id="prop_log_format"></a>·<strong><code·class="inline">{log_format,·common·|·combined}</code></strong><br/>Defines·if·access·logs·are·to·be·written·according·to·the·<code·class="inline">common</code>·log·format |
| 269 | or·the·extended·common·log·format.·The·<code·class="inline">common</code>·format·is·one·line·looking | 269 | or·the·extended·common·log·format.·The·<code·class="inline">common</code>·format·is·one·line·looking |
| 270 | like·this:·<code·class="inline">remotehost·rfc931·authuser·[date]·"request"·status·bytes</code>.</p><p>Here:</p><ul><li><p><strong><code·class="inline">remotehost</code></strong>·-·Remote.</p></li><li><p><strong><code·class="inline">rfc931</code></strong>·-·The·remote·username·of·the·client | 270 | like·this:·<code·class="inline">remotehost·rfc931·authuser·[date]·"request"·status·bytes</code>.</p><p>Here:</p><ul><li><p><strong><code·class="inline">remotehost</code></strong>·-·Remote.</p></li><li><p><strong><code·class="inline">rfc931</code></strong>·-·The·remote·username·of·the·client |
| 271 | (<a·href="http://www.ietf.org/rfc/rfc931.txt">RFC·931</a>).</p></li><li><p><strong><code·class="inline">authuser</code></strong>·-·The·username·used·for·authentication.</p></li><li><p><strong><code·class="inline">[date]</code></strong>·-·Date·and·time·of·the·request | 271 | (<a·href="http://www.ietf.org/rfc/rfc931.txt">RFC·931</a>).</p></li><li><p><strong><code·class="inline">authuser</code></strong>·-·The·username·used·for·authentication.</p></li><li><p><strong><code·class="inline">[date]</code></strong>·-·Date·and·time·of·the·request |
| 272 | (<a·href="http://www.ietf.org/rfc/rfc1123.txt">RFC·1123</a>).</p></li><li><p><strong><code·class="inline">"request"</code></strong>·-·The·request·line·as·it·came·from·the·client | 272 | (<a·href="http://www.ietf.org/rfc/rfc1123.txt">RFC·1123</a>).</p></li><li><p><strong><code·class="inline">"request"</code></strong>·-·The·request·line·as·it·came·from·the·client |
| 273 | (<a·href="http://www.ietf.org/rfc/rfc1945.txt">RFC·1945</a>).</p></li><li><p><strong><code·class="inline">status</code></strong>·-·The·HTTP·status·code·returned·to·the·client | 273 | (<a·href="http://www.ietf.org/rfc/rfc1945.txt">RFC·1945</a>).</p></li><li><p><strong><code·class="inline">status</code></strong>·-·The·HTTP·status·code·returned·to·the·client |
| 274 | (<a·href="http://www.ietf.org/rfc/rfc1945.txt">RFC·1945</a>).</p></li><li><p><strong><code·class="inline">bytes</code></strong>·-·The·content-length·of·the·document·transferred.</p></li></ul><p>The·<code·class="inline">combined</code>·format·is·one·line·looking·like·this: | 274 | (<a·href="http://www.ietf.org/rfc/rfc1945.txt">RFC·1945</a>).</p></li><li><p><strong><code·class="inline">bytes</code></strong>·-·The·content-length·of·the·document·transferred.</p></li></ul><p>The·<code·class="inline">combined</code>·format·is·one·line·looking·like·this: |
| 275 | <code·class="inline">remotehost·rfc931·authuser·[date]·"request"·status·bytes·"referer"·"user_agent"</code></p><p>In·addition·to·the·earlier:</p><ul><li><p><strong><code·class="inline">"referer"</code></strong>·-·The·URL·the·client·was·on·before·requesting·the·URL·(if·it | 275 | <code·class="inline">remotehost·rfc931·authuser·[date]·"request"·status·bytes·"referer"·"user_agent"</code></p><p>In·addition·to·the·earlier:</p><ul><li><p><strong><code·class="inline">"referer"</code></strong>·-·The·URL·the·client·was·on·before·requesting·the·URL·(if·it |
| 276 | could·not·be·determined,·a·minus·sign·is·placed·in·this·field).</p></li><li><p><strong><code·class="inline">"user_agent"</code></strong>·-·The·software·the·client·claims·to·be·using·(if·it·could | 276 | could·not·be·determined,·a·minus·sign·is·placed·in·this·field).</p></li><li><p><strong><code·class="inline">"user_agent"</code></strong>·-·The·software·the·client·claims·to·be·using·(if·it·could |
| 277 | not·be·determined,·a·minus·sign·is·placed·in·this·field).</p></li></ul><p>This·affects·the·access·logs·written·by·<code·class="inline">mod_log</code>·and·<code·class="inline">mod_disk_log</code>.</p></li><li><p><a·href=""·id="prop_elog_format"></a>·<strong><code·class="inline">{error_log_format,·pretty·|·compact}</code></strong><br/>Default·is·<code·class="inline">pretty</code>.·If·the·error·log·is·meant·to·be·read·directly·by·a·human, | 277 | not·be·determined,·a·minus·sign·is·placed·in·this·field).</p></li></ul><p>This·affects·the·access·logs·written·by·<code·class="inline">mod_log</code>·and·<code·class="inline">mod_disk_log</code>.</p></li><li><p><a·href=""·id="prop_elog_format"></a>·<strong><code·class="inline">{error_log_format,·pretty·|·compact}</code></strong><br/>Default·is·<code·class="inline">pretty</code>.·If·the·error·log·is·meant·to·be·read·directly·by·a·human, |
| 278 | <code·class="inline">pretty</code>·is·the·best·option.</p><p><code·class="inline">pretty</code>·has·a·format·corresponding·to:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 278 | <code·class="inline">pretty</code>·is·the·best·option.</p><p><code·class="inline">pretty</code>·has·a·format·corresponding·to:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="8380782781-1">(</span><span·class="s">"[</span><span·class="si">~s</span><span·class="s">]·</span><span·class="si">~s</span><span·class="s">,·reason:·</span><span·class="si">~n</span><span·class="s">·</span><span·class="si">~p</span><span·class="s">·<[·...·truncated·by·diffoscope;·len:·1381,·SHA:·83485009ead1543ff144b8fef16e71e52c16ee339c4a0567eeb5cddd4cf21b45·...·]-1">)</span><span·class="p">.</span></code></pre><p>This·affects·the·error·logs·written·by·<code·class="inline">mod_log</code>·and·<code·class="inline">mod_disk_log</code>.</p></li></ul><p><a·href=""·id="props_alias"></a></p><h3·id="module-url-aliasing-properties-requires-mod_alias"·class="section-heading"> |
| 279 | ··<a·href="#module-url-aliasing-properties-requires-mod_alias"·class="hover-link"> | 279 | ··<a·href="#module-url-aliasing-properties-requires-mod_alias"·class="hover-link"> |
| 280 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 280 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 281 | ··</a> | 281 | ··</a> |
| 282 | ··<span·class="text">URL·Aliasing·Properties·-·Requires·mod_alias</span> | 282 | ··<span·class="text">URL·Aliasing·Properties·-·Requires·mod_alias</span> |
| 283 | </h3> | 283 | </h3> |
| 284 | <ul><li><p><a·href=""·id="prop_alias"></a>·<strong><code·class="inline">{alias,·{Alias,·RealName}}</code></strong><br/><code·class="inline">Alias·=·string()</code>·and·<code·class="inline">RealName·=·string()</code>.·<code·class="inline">alias</code>·allows·documents·to·be | 284 | <ul><li><p><a·href=""·id="prop_alias"></a>·<strong><code·class="inline">{alias,·{Alias,·RealName}}</code></strong><br/><code·class="inline">Alias·=·string()</code>·and·<code·class="inline">RealName·=·string()</code>.·<code·class="inline">alias</code>·allows·documents·to·be |
| 285 | stored·in·the·local·file·system·instead·of·the·<code·class="inline">document_root</code>·location.·URLs | 285 | stored·in·the·local·file·system·instead·of·the·<code·class="inline">document_root</code>·location.·URLs |
| 286 | with·a·path·beginning·with·url-path·is·mapped·to·local·files·beginning·with | 286 | with·a·path·beginning·with·url-path·is·mapped·to·local·files·beginning·with |
| 287 | directory-filename,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 287 | directory-filename,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8160960651-1">{</span><span·class="ss">alias</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8160960651-2">{</span><span·class="s">"/image"</span><span·class="p">,</span><span·class="w">·</span><span·class="s"[·...·truncated·by·diffoscope;·len:·128,·SHA:·9e46a5d7e14819a4ca807989c5ea366295a5334499d827a4ee80aafc70c4211b·...·]-1">}</span></code></pre><p>Access·to·<a·href="http://your.server.org/image/foo.gif">http://your.server.org/image/foo.gif</a>·would·refer·to·the·file |
| 288 | /ftp/pub/image/foo.gif.</p></li><li><p><a·href=""·id="prop_re_write"></a>·<strong><code·class="inline">{re_write,·{Re,·Replacement}}</code></strong><br/><code·class="inline">Re·=·string()</code>·and·<code·class="inline">Replacement·=·string()</code>.·<code·class="inline">re_write</code>·allows·documents·to | 288 | /ftp/pub/image/foo.gif.</p></li><li><p><a·href=""·id="prop_re_write"></a>·<strong><code·class="inline">{re_write,·{Re,·Replacement}}</code></strong><br/><code·class="inline">Re·=·string()</code>·and·<code·class="inline">Replacement·=·string()</code>.·<code·class="inline">re_write</code>·allows·documents·to |
| 289 | be·stored·in·the·local·file·system·instead·of·the·<code·class="inline">document_root</code>·location. | 289 | be·stored·in·the·local·file·system·instead·of·the·<code·class="inline">document_root</code>·location. |
| 290 | URLs·are·rewritten·by·<a·href="../../../../lib/stdlib-6.2.1/doc/html/re.html#replace/3"><code·class="inline">re:replace/3</code></a>·to·produce·a·path·in·the·local | 290 | URLs·are·rewritten·by·<a·href="../../../../lib/stdlib-6.2.1/doc/html/re.html#replace/3"><code·class="inline">re:replace/3</code></a>·to·produce·a·path·in·the·local |
| 291 | file-system,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="1 | 291 | file-system,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="1917338739-1">{</span><span·class="ss">re_write</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1917338739-2">{</span><span·class="s">"^/[~]([^/]+)(.*)$"</span><span·class="p">,</span><span·class="w">·</span><s[·...·truncated·by·diffoscope;·len:·146,·SHA:·ba3e62b2b29794d3a7f9d839d5d0deb72f78d709686d1f2dc0c08731f1976b79·...·]-1">}</span></code></pre><p>Access·to·<a·href="http://your.server.org/~bob/foo.gif">http://your.server.org/~bob/foo.gif</a>·would·refer·to·the·file |
| 292 | /home/bob/public/foo.gif.</p></li><li><p><a·href=""·id="prop_dir_idx"></a>·<strong><code·class="inline">{directory_index,·[string()]}</code></strong><br/><code·class="inline">directory_index</code>·specifies·a·list·of·resources·to·look·for·if·a·client | 292 | /home/bob/public/foo.gif.</p></li><li><p><a·href=""·id="prop_dir_idx"></a>·<strong><code·class="inline">{directory_index,·[string()]}</code></strong><br/><code·class="inline">directory_index</code>·specifies·a·list·of·resources·to·look·for·if·a·client |
| 293 | requests·a·directory·using·a·<code·class="inline">/</code>·at·the·end·of·the·directory·name.·<code·class="inline">file</code> | 293 | requests·a·directory·using·a·<code·class="inline">/</code>·at·the·end·of·the·directory·name.·<code·class="inline">file</code> |
| 294 | depicts·the·name·of·a·file·in·the·directory.·Several·files·can·be·given,·in | 294 | depicts·the·name·of·a·file·in·the·directory.·Several·files·can·be·given,·in |
| 295 | which·case·the·server·returns·the·first·it·finds,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 295 | which·case·the·server·returns·the·first·it·finds,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="7557648528-1">{</span><span·class="ss">directory_index</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7557648528-2">[</span><span·class="s">"index.html"</span><span·class="p">,</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·140,·SHA:·c1cda65043fdc777a7a27b1a8ba2510abc166364d789a0b3bf2fc774e7923e9f·...·]-1">}</span></code></pre><p>Access·to·<a·href="http://your.server.org/docs/">http://your.server.org/docs/</a>·would·return |
| 296 | <a·href="http://your.server.org/docs/index.html">http://your.server.org/docs/index.html</a>·or | 296 | <a·href="http://your.server.org/docs/index.html">http://your.server.org/docs/index.html</a>·or |
| 297 | <a·href="http://your.server.org/docs/welcome.html">http://your.server.org/docs/welcome.html</a>·if·index.html·does·not·exist.</p></li></ul><p><a·href=""·id="props_cgi"></a></p><h3·id="module-cgi-properties-requires-mod_cgi"·class="section-heading"> | 297 | <a·href="http://your.server.org/docs/welcome.html">http://your.server.org/docs/welcome.html</a>·if·index.html·does·not·exist.</p></li></ul><p><a·href=""·id="props_cgi"></a></p><h3·id="module-cgi-properties-requires-mod_cgi"·class="section-heading"> |
| 298 | ··<a·href="#module-cgi-properties-requires-mod_cgi"·class="hover-link"> | 298 | ··<a·href="#module-cgi-properties-requires-mod_cgi"·class="hover-link"> |
| 299 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 299 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 300 | ··</a> | 300 | ··</a> |
| 301 | ··<span·class="text">CGI·Properties·-·Requires·mod_cgi</span> | 301 | ··<span·class="text">CGI·Properties·-·Requires·mod_cgi</span> |
| 302 | </h3> | 302 | </h3> |
| Offset 316, 23 lines modified | Offset 316, 23 lines modified | ||
| 316 | activating·a·CGI·script·whenever·a·file·of·a·certain·MIME·type·is·requested. | 316 | activating·a·CGI·script·whenever·a·file·of·a·certain·MIME·type·is·requested. |
| 317 | It·propagates·the·URL·and·file·path·of·the·requested·document·using·the | 317 | It·propagates·the·URL·and·file·path·of·the·requested·document·using·the |
| 318 | standard·CGI·PATH_INFO·and·PATH_TRANSLATED·environment·variables.</p><p>Example:</p><pre><code·class="text">{action,·{"text/plain",·"/cgi-bin/log_and_deliver_text"}}</code></pre></li><li><p><a·href=""·id="prop_script"></a>·<strong><code·class="inline">{script,·{Method,·CgiScript}}</code></strong>·-·requires·<code·class="inline">mod_actions</code><br/><code·class="inline">Method·=·string()</code>·and·<code·class="inline">CgiScript·=·string()</code>.·<code·class="inline">script</code>·adds·an·action | 318 | standard·CGI·PATH_INFO·and·PATH_TRANSLATED·environment·variables.</p><p>Example:</p><pre><code·class="text">{action,·{"text/plain",·"/cgi-bin/log_and_deliver_text"}}</code></pre></li><li><p><a·href=""·id="prop_script"></a>·<strong><code·class="inline">{script,·{Method,·CgiScript}}</code></strong>·-·requires·<code·class="inline">mod_actions</code><br/><code·class="inline">Method·=·string()</code>·and·<code·class="inline">CgiScript·=·string()</code>.·<code·class="inline">script</code>·adds·an·action |
| 319 | activating·a·CGI·script·whenever·a·file·is·requested·using·a·certain·HTTP | 319 | activating·a·CGI·script·whenever·a·file·is·requested·using·a·certain·HTTP |
| 320 | method.·The·method·is·either·GET·or·POST,·as·defined·in | 320 | method.·The·method·is·either·GET·or·POST,·as·defined·in |
| 321 | <a·href="http://www.ietf.org/rfc/rfc1945.txt">RFC·1945</a>.·It·propagates·the·URL·and | 321 | <a·href="http://www.ietf.org/rfc/rfc1945.txt">RFC·1945</a>.·It·propagates·the·URL·and |
| 322 | file·path·of·the·requested·document·using·the·standard·CGI·PATH_INFO·and | 322 | file·path·of·the·requested·document·using·the·standard·CGI·PATH_INFO·and |
| 323 | PATH_TRANSLATED·environment·variables.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 323 | PATH_TRANSLATED·environment·variables.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="5198477528-1">{</span><span·class="ss">script</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5198477528-2">{</span><span·class="s">"PUT"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">&[·...·truncated·by·diffoscope;·len:·124,·SHA:·d056ca9bc0f8e7120201db4cf4ad20c8a1a3f66992ea78c3f6754d5d5e830585·...·]-1">}</span></code></pre></li></ul><p><a·href=""·id="props_esi"></a></p><h3·id="module-esi-properties-requires-mod_esi"·class="section-heading"> |
| 324 | ··<a·href="#module-esi-properties-requires-mod_esi"·class="hover-link"> | 324 | ··<a·href="#module-esi-properties-requires-mod_esi"·class="hover-link"> |
| 325 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 325 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 326 | ··</a> | 326 | ··</a> |
| 327 | ··<span·class="text">ESI·Properties·-·Requires·mod_esi</span> | 327 | ··<span·class="text">ESI·Properties·-·Requires·mod_esi</span> |
| 328 | </h3> | 328 | </h3> |
| 329 | <ul><li><p><a·href=""·id="prop_esi_alias"></a>·<strong><code·class="inline">{erl_script_alias,·{URLPath,·[AllowedModule]}}</code></strong><br/><code·class="inline">URLPath·=·string()</code>·and·<code·class="inline">AllowedModule·=·atom()</code>.·<code·class="inline">erl_script_alias</code>·marks | 329 | <ul><li><p><a·href=""·id="prop_esi_alias"></a>·<strong><code·class="inline">{erl_script_alias,·{URLPath,·[AllowedModule]}}</code></strong><br/><code·class="inline">URLPath·=·string()</code>·and·<code·class="inline">AllowedModule·=·atom()</code>.·<code·class="inline">erl_script_alias</code>·marks |
| 330 | all·URLs·matching·url-path·as·erl·scheme·scripts.·A·matching·URL·is·mapped | 330 | all·URLs·matching·url-path·as·erl·scheme·scripts.·A·matching·URL·is·mapped |
| 331 | into·a·specific·module·and·function,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 331 | into·a·specific·module·and·function,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="9603633941-1">{</span><span·class="ss">erl_script_alias</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9603633941-2">{</span><span·class="s">"/cgi-bin/example"</span><span·class="p">,</span><span·class="w">·<[·...·truncated·by·diffoscope;·len:·243,·SHA:·ab7f079c846c259a337a487993de488cb0ad2220c9767cc7a8378683a9f9561f·...·]-1">}</span></code></pre><p>A·request·to·<a·href="http://your.server.org/cgi-bin/example/httpd_example:yahoo">http://your.server.org/cgi-bin/example/httpd_example:yahoo</a>·would |
| 332 | refer·to·httpd_example:yahoo/3·or,·if·that·does·not·exist, | 332 | refer·to·httpd_example:yahoo/3·or,·if·that·does·not·exist, |
| 333 | httpd_example:yahoo/2·and·<a·href="http://your.server.org/cgi-bin/example/other:yahoo">http://your.server.org/cgi-bin/example/other:yahoo</a> | 333 | httpd_example:yahoo/2·and·<a·href="http://your.server.org/cgi-bin/example/other:yahoo">http://your.server.org/cgi-bin/example/other:yahoo</a> |
| 334 | would·not·be·allowed·to·execute.</p></li><li><p><a·href=""·id="prop_esi_nocache"></a>·<strong><code·class="inline">{erl_script_nocache,·boolean()}</code></strong><br/>If·<code·class="inline">erl_script_nocache</code>·is·set·to·<code·class="inline">true</code>,·the·server·adds·HTTP·header·fields | 334 | would·not·be·allowed·to·execute.</p></li><li><p><a·href=""·id="prop_esi_nocache"></a>·<strong><code·class="inline">{erl_script_nocache,·boolean()}</code></strong><br/>If·<code·class="inline">erl_script_nocache</code>·is·set·to·<code·class="inline">true</code>,·the·server·adds·HTTP·header·fields |
| 335 | preventing·proxies·from·caching·the·page.·This·is·generally·a·good·idea·for | 335 | preventing·proxies·from·caching·the·page.·This·is·generally·a·good·idea·for |
| 336 | dynamic·content,·as·the·content·often·varies·between·each·request.·Default·is | 336 | dynamic·content,·as·the·content·often·varies·between·each·request.·Default·is |
| 337 | <code·class="inline">false</code>.</p></li><li><p><a·href=""·id="prop_esi_timeout"></a>·<strong><code·class="inline">{erl_script_timeout,·integer()}</code></strong><br/>If·<code·class="inline">erl_script_timeout</code>·sets·the·time·in·seconds·the·server·waits·between·each | 337 | <code·class="inline">false</code>.</p></li><li><p><a·href=""·id="prop_esi_timeout"></a>·<strong><code·class="inline">{erl_script_timeout,·integer()}</code></strong><br/>If·<code·class="inline">erl_script_timeout</code>·sets·the·time·in·seconds·the·server·waits·between·each |
| 338 | chunk·of·data·to·be·delivered·through·<a·href="mod_esi.html#deliver/2"><code·class="inline">mod_esi:deliver/2</code></a>.·Default·is·<code·class="inline">15</code>. | 338 | chunk·of·data·to·be·delivered·through·<a·href="mod_esi.html#deliver/2"><code·class="inline">mod_esi:deliver/2</code></a>.·Default·is·<code·class="inline">15</code>. |
| Offset 374, 15 lines modified | Offset 374, 15 lines modified | ||
| 374 | is·written·to·each·file·and·max·files·is·used·before·the·first·file·is | 374 | is·written·to·each·file·and·max·files·is·used·before·the·first·file·is |
| 375 | truncated·and·reused.</p></li></ul><p><a·href=""·id="props_auth"></a></p><h3·id="module-authentication-properties-requires-mod_auth"·class="section-heading"> | 375 | truncated·and·reused.</p></li></ul><p><a·href=""·id="props_auth"></a></p><h3·id="module-authentication-properties-requires-mod_auth"·class="section-heading"> |
| 376 | ··<a·href="#module-authentication-properties-requires-mod_auth"·class="hover-link"> | 376 | ··<a·href="#module-authentication-properties-requires-mod_auth"·class="hover-link"> |
| 377 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 377 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 378 | ··</a> | 378 | ··</a> |
| 379 | ··<span·class="text">Authentication·Properties·-·Requires·mod_auth</span> | 379 | ··<span·class="text">Authentication·Properties·-·Requires·mod_auth</span> |
| 380 | </h3> | 380 | </h3> |
| 381 | <p><a·href=""·id="prop_dri"></a></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 381 | <p><a·href=""·id="prop_dri"></a></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="1324085508-1">{</span><span·class="ss">directory</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1324085508-2">{</span><span·class="nf">path</span><span·class="p"·data-group-id="1324085508-3">(</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·1510,·SHA:·16997c273cb421cf81aada3d054da890aa66972a17ff3f7a127f2c1063d50a47·...·]-1">}</span></code></pre><p>The·host·<code·class="inline">123.34.56.11</code>·and·all·machines·on·the·<code·class="inline">150.100.23</code>·subnet·are |
| 382 | allowed·access.</p></li><li><p><a·href=""·id="prop_deny_from"></a>·<strong><code·class="inline">{deny_from,·all·|·[RegxpHostString]}</code></strong><br/>Defines·a·set·of·hosts·to·be·denied·access·to·a·given·directory,·for·example:</p><pre><code·class="text">{deny_from,·["123.34.56.11",·"150.100.23"]}</code></pre><p>The·host·<code·class="inline">123.34.56.11</code>·and·all·machines·on·the·<code·class="inline">150.100.23</code>·subnet·are·not | 382 | allowed·access.</p></li><li><p><a·href=""·id="prop_deny_from"></a>·<strong><code·class="inline">{deny_from,·all·|·[RegxpHostString]}</code></strong><br/>Defines·a·set·of·hosts·to·be·denied·access·to·a·given·directory,·for·example:</p><pre><code·class="text">{deny_from,·["123.34.56.11",·"150.100.23"]}</code></pre><p>The·host·<code·class="inline">123.34.56.11</code>·and·all·machines·on·the·<code·class="inline">150.100.23</code>·subnet·are·not |
| 383 | allowed·access.</p></li><li><p><a·href=""·id="prop_auth_type"></a>·<strong><code·class="inline">{auth_type,·plain·|·dets·|·mnesia}</code></strong><br/>Sets·the·type·of·authentication·database·that·is·used·for·the·directory.·The | 383 | allowed·access.</p></li><li><p><a·href=""·id="prop_auth_type"></a>·<strong><code·class="inline">{auth_type,·plain·|·dets·|·mnesia}</code></strong><br/>Sets·the·type·of·authentication·database·that·is·used·for·the·directory.·The |
| 384 | key·difference·between·the·different·methods·is·that·dynamic·data·can·be·saved | 384 | key·difference·between·the·different·methods·is·that·dynamic·data·can·be·saved |
| 385 | when·Mnesia·and·Dets·are·used.</p></li><li><p><a·href=""·id="prop_auth_user_file"></a>·<strong><code·class="inline">{auth_user_file,·path()}</code></strong><br/>Sets·the·name·of·a·file·containing·the·list·of·users·and·passwords·for·user | 385 | when·Mnesia·and·Dets·are·used.</p></li><li><p><a·href=""·id="prop_auth_user_file"></a>·<strong><code·class="inline">{auth_user_file,·path()}</code></strong><br/>Sets·the·name·of·a·file·containing·the·list·of·users·and·passwords·for·user |
| 386 | authentication.·The·filename·can·be·either·absolute·or·relative·to·the | 386 | authentication.·The·filename·can·be·either·absolute·or·relative·to·the |
| 387 | <code·class="inline">server_root</code>.·If·using·the·plain·storage·method,·this·file·is·a·plain·text | 387 | <code·class="inline">server_root</code>.·If·using·the·plain·storage·method,·this·file·is·a·plain·text |
| 388 | file·where·each·line·contains·a·username·followed·by·a·colon,·followed·by·the | 388 | file·where·each·line·contains·a·username·followed·by·a·colon,·followed·by·the |
| Offset 409, 15 lines modified | Offset 409, 15 lines modified | ||
| 409 | changed·after·the·web·server·is·started.·Otherwise·it·is·written·in·clear·text | 409 | changed·after·the·web·server·is·started.·Otherwise·it·is·written·in·clear·text |
| 410 | in·the·configuration·file.</p></li><li><p><a·href=""·id="prop_req_user"></a>·<strong><code·class="inline">{require_user,·[string()]}</code></strong><br/>Defines·users·to·grant·access·to·a·given·directory·using·a·secret·password.</p></li><li><p><a·href=""·id="prop_req_grp"></a>·<strong><code·class="inline">{require_group,·[string()]}</code></strong><br/>Defines·users·to·grant·access·to·a·given·directory·using·a·secret·password.</p></li></ul><p><a·href=""·id="props_sec"></a></p><h3·id="module-security-properties-requires-mod_security"·class="section-heading"> | 410 | in·the·configuration·file.</p></li><li><p><a·href=""·id="prop_req_user"></a>·<strong><code·class="inline">{require_user,·[string()]}</code></strong><br/>Defines·users·to·grant·access·to·a·given·directory·using·a·secret·password.</p></li><li><p><a·href=""·id="prop_req_grp"></a>·<strong><code·class="inline">{require_group,·[string()]}</code></strong><br/>Defines·users·to·grant·access·to·a·given·directory·using·a·secret·password.</p></li></ul><p><a·href=""·id="props_sec"></a></p><h3·id="module-security-properties-requires-mod_security"·class="section-heading"> |
| 411 | ··<a·href="#module-security-properties-requires-mod_security"·class="hover-link"> | 411 | ··<a·href="#module-security-properties-requires-mod_security"·class="hover-link"> |
| 412 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 412 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 413 | ··</a> | 413 | ··</a> |
| 414 | ··<span·class="text">Security·Properties·-·Requires·mod_security</span> | 414 | ··<span·class="text">Security·Properties·-·Requires·mod_security</span> |
| 415 | </h3> | 415 | </h3> |
| 416 | <p><a·href=""·id="prop_sec_dir"></a></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 416 | <p><a·href=""·id="prop_sec_dir"></a></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="4836539746-1">{</span><span·class="ss">security_directory</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4836539746-2">{</span><span·class="nf">path</span><span·class="p"·data-group-id="4836539746-3">(</span><span·clas[·...·truncated·by·diffoscope;·len:·717,·SHA:·028df98788237eb822980a95813b5409afd489168a4a8a8db0522e6d9efd0381·...·]-1">}</span></code></pre><p><a·href=""·id="props_sdir"></a></p><p>The·properties·for·the·security·directories·are·as·follows:</p><ul><li><p><a·href=""·id="prop_data_file"></a>·<strong><code·class="inline">{data_file,·path()}</code></strong><br/>Name·of·the·security·data·file.·The·filename·can·either·be·absolute·or |
| 417 | relative·to·the·<code·class="inline">server_root</code>.·This·file·is·used·to·store·persistent·data·for | 417 | relative·to·the·<code·class="inline">server_root</code>.·This·file·is·used·to·store·persistent·data·for |
| 418 | module·<code·class="inline">mod_security</code>.</p></li><li><p><a·href=""·id="prop_max_retries"></a>·<strong><code·class="inline">{max_retries,·integer()}</code></strong><br/>Specifies·the·maximum·number·of·attempts·to·authenticate·a·user·before·the | 418 | module·<code·class="inline">mod_security</code>.</p></li><li><p><a·href=""·id="prop_max_retries"></a>·<strong><code·class="inline">{max_retries,·integer()}</code></strong><br/>Specifies·the·maximum·number·of·attempts·to·authenticate·a·user·before·the |
| 419 | user·is·blocked·out.·If·a·user·successfully·authenticates·while·blocked,·the | 419 | user·is·blocked·out.·If·a·user·successfully·authenticates·while·blocked,·the |
| 420 | user·receives·a·403·(Forbidden)·response·from·the·server.·If·the·user·makes·a | 420 | user·receives·a·403·(Forbidden)·response·from·the·server.·If·the·user·makes·a |
| 421 | failed·attempt·while·blocked,·the·server·returns·401·(Unauthorized),·for | 421 | failed·attempt·while·blocked,·the·server·returns·401·(Unauthorized),·for |
| 422 | security·reasons.·Default·is·<code·class="inline">3</code>.·Can·be·set·to·infinity.</p></li><li><p><a·href=""·id="prop_block_time"></a>·<strong><code·class="inline">{block_time,·integer()}</code></strong><br/>Specifies·the·number·of·minutes·a·user·is·blocked.·After·this·time·has·passed, | 422 | security·reasons.·Default·is·<code·class="inline">3</code>.·Can·be·set·to·infinity.</p></li><li><p><a·href=""·id="prop_block_time"></a>·<strong><code·class="inline">{block_time,·integer()}</code></strong><br/>Specifies·the·number·of·minutes·a·user·is·blocked.·After·this·time·has·passed, |
| 423 | the·user·automatically·regains·access.·Default·is·<code·class="inline">60</code>.</p></li><li><p><a·href=""·id="prop_fail_exp_time"></a>·<strong><code·class="inline">{fail_expire_time,·integer()}</code></strong><br/>Specifies·the·number·of·minutes·a·failed·user·authentication·is·remembered.·If | 423 | the·user·automatically·regains·access.·Default·is·<code·class="inline">60</code>.</p></li><li><p><a·href=""·id="prop_fail_exp_time"></a>·<strong><code·class="inline">{fail_expire_time,·integer()}</code></strong><br/>Specifies·the·number·of·minutes·a·failed·user·authentication·is·remembered.·If |
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| 426 | remembered.·After·this·time·has·passed,·the·authentication·is·no·longer | 426 | remembered.·After·this·time·has·passed,·the·authentication·is·no·longer |
| 427 | reported.·Default·is·<code·class="inline">30</code>.</p></li></ul><h2·id="module-web-server-api-data-types"·class="section-heading"> | 427 | reported.·Default·is·<code·class="inline">30</code>.</p></li></ul><h2·id="module-web-server-api-data-types"·class="section-heading"> |
| 428 | ··<a·href="#module-web-server-api-data-types"·class="hover-link"> | 428 | ··<a·href="#module-web-server-api-data-types"·class="hover-link"> |
| 429 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 429 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 430 | ··</a> | 430 | ··</a> |
| 431 | ··<span·class="text">Web·server·API·data·types</span> | 431 | ··<span·class="text">Web·server·API·data·types</span> |
| 432 | </h2> | 432 | </h2> |
| 433 | <p>The·Erlang·web·server·API·data·types·are·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">ModData</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">mod</span><span·class="p"·data-group-id=" | 433 | <p>The·Erlang·web·server·API·data·types·are·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">ModData</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">mod</span><span·class="p"·data-group-id="0871296951-1">{</span><span·class="p"·data-group-id="0871296951-1">}</span><span·class="w"> |
| 434 | </span><span·class="w"> | 434 | </span><span·class="w"> |
| 435 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 435 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="0871296951-2">(</span><span·class="ss">mod</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0871296951-3">{</span><span·class="w"> |
| 436 | ····</span><span·class="ss">data</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 436 | ····</span><span·class="ss">data</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="0871296951-4">[</span><span·class="p"·data-group-id="0871296951-4">]</span><span·class="p">,</span><span·class="w"> |
| 437 | ····</span><span·class="ss">socket_type</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">ip_comm</span><span·class="p">,</span><span·class="w"> | 437 | ····</span><span·class="ss">socket_type</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">ip_comm</span><span·class="p">,</span><span·class="w"> |
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| 25 | ?rw-r--r--··6.1·unx······252·bx·defN·25-Mar-18·0 | 25 | ?rw-r--r--··6.1·unx······252·bx·defN·25-Mar-18·08:46·META-INF/container.xml |
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| 32 | takeover,·configure·the·services·to·be·started·at·application·startup.·When | 32 | takeover,·configure·the·services·to·be·started·at·application·startup.·When |
| 33 | starting·the·<code·class="inline">Inets</code>·application,·the·<code·class="inline">Inets</code>·top·supervisor·starts·a·number·of | 33 | starting·the·<code·class="inline">Inets</code>·application,·the·<code·class="inline">Inets</code>·top·supervisor·starts·a·number·of |
| 34 | subsupervisors·and·worker·processes·for·handling·the·provided·services.·When | 34 | subsupervisors·and·worker·processes·for·handling·the·provided·services.·When |
| 35 | starting·services·dynamically,·new·children·are·added·to·the·supervision·tree, | 35 | starting·services·dynamically,·new·children·are·added·to·the·supervision·tree, |
| 36 | unless·the·service·is·started·with·the·standalone·option.·In·this·case·the | 36 | unless·the·service·is·started·with·the·standalone·option.·In·this·case·the |
| 37 | service·is·linked·to·the·calling·process·and·all·OTP·application·features,·such | 37 | service·is·linked·to·the·calling·process·and·all·OTP·application·features,·such |
| 38 | as·soft·upgrade,·are·lost.</p><p>Services·to·be·configured·for·startup·at·application·startup·are·to·be·put·into | 38 | as·soft·upgrade,·are·lost.</p><p>Services·to·be·configured·for·startup·at·application·startup·are·to·be·put·into |
| 39 | the·Erlang·node·configuration·file·on·the·following·form:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="7 | 39 | the·Erlang·node·configuration·file·on·the·following·form:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="7232707117-1">[</span><span·class="p"·data-group-id="7232707117-2">{</span><span·class="ss">inets</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7232707117-3">[</span><span·class="p"·data-group-id="7232707117-4">{</span[·...·truncated·by·diffoscope;·len:·328,·SHA:·60919b57bdc406da08a20440f89c8e023b536623cf96236be2104a58c7cbe9d3·...·]-1">]</span><span·class="p">.</span></code></pre><p>For·details·of·what·to·put·in·the·list·of·configured·services,·see·the |
| 40 | documentation·for·the·services·to·be·configured.</p> | 40 | documentation·for·the·services·to·be·configured.</p> |
| 41 | ··</body> | 41 | ··</body> |
| 42 | </html> | 42 | </html> |
| Offset 921, 21 lines modified | Offset 921, 21 lines modified | ||
| 921 | options.</p></section><p>By·default·the·socket·options·set·by·function | 921 | options.</p></section><p>By·default·the·socket·options·set·by·function |
| 922 | <a·href="#set_options/1">set_options/1,2</a>·are·used·when·establishing·a·connection.</p></li><li><p><strong><code·class="inline">receiver</code></strong>·-·Defines·how·the·client·delivers·the·result·of·an·asynchronous | 922 | <a·href="#set_options/1">set_options/1,2</a>·are·used·when·establishing·a·connection.</p></li><li><p><strong><code·class="inline">receiver</code></strong>·-·Defines·how·the·client·delivers·the·result·of·an·asynchronous |
| 923 | request·(<code·class="inline">sync</code>·has·the·value·<code·class="inline">false</code>).</p><ul><li><p><strong><a·href="../../../../lib/../erts/doc/html/erlang.html#t:pid/0"><code·class="inline">pid/0</code></a></strong>·-·Messages·are·sent·to·this·process·in·the·format | 923 | request·(<code·class="inline">sync</code>·has·the·value·<code·class="inline">false</code>).</p><ul><li><p><strong><a·href="../../../../lib/../erts/doc/html/erlang.html#t:pid/0"><code·class="inline">pid/0</code></a></strong>·-·Messages·are·sent·to·this·process·in·the·format |
| 924 | <code·class="inline">{http,·ReplyInfo}</code>.</p></li><li><p><strong><a·href="../../../../lib/../erts/doc/html/erlang.html#alias/0"><code·class="inline">alias/0</code></a></strong>·-·Messages·are·sent·to·this·special·reference·in·the·format | 924 | <code·class="inline">{http,·ReplyInfo}</code>.</p></li><li><p><strong><a·href="../../../../lib/../erts/doc/html/erlang.html#alias/0"><code·class="inline">alias/0</code></a></strong>·-·Messages·are·sent·to·this·special·reference·in·the·format |
| 925 | <code·class="inline">{http,·ReplyInfo}</code>.</p></li><li><p><strong><code·class="inline">function/1</code></strong>·-·Information·is·delivered·to·the·receiver·through·calls·to | 925 | <code·class="inline">{http,·ReplyInfo}</code>.</p></li><li><p><strong><code·class="inline">function/1</code></strong>·-·Information·is·delivered·to·the·receiver·through·calls·to |
| 926 | the·provided·fun·<code·class="inline">Receiver(ReplyInfo)</code>.</p></li><li><p><strong><code·class="inline">{Module,·Function,·Args}</code></strong>·-·Information·is·delivered·to·the·receiver | 926 | the·provided·fun·<code·class="inline">Receiver(ReplyInfo)</code>.</p></li><li><p><strong><code·class="inline">{Module,·Function,·Args}</code></strong>·-·Information·is·delivered·to·the·receiver |
| 927 | through·calls·to·the·callback·function | 927 | through·calls·to·the·callback·function |
| 928 | <a·href="../../../../lib/../erts/doc/html/erlang.html#apply/3"><code·class="inline">apply(Module,·Function,·[ReplyInfo·|·Args])</code></a>.</p></li></ul><p>In·all·of·these·cases,·<code·class="inline">ReplyInfo</code>·has·the·following·structure:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="w">·</samp><samp·class="p"·data-group-id=" | 928 | <a·href="../../../../lib/../erts/doc/html/erlang.html#apply/3"><code·class="inline">apply(Module,·Function,·[ReplyInfo·|·Args])</code></a>.</p></li></ul><p>In·all·of·these·cases,·<code·class="inline">ReplyInfo</code>·has·the·following·structure:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="w">·</samp><samp·class="p"·data-group-id="1574291559-1">{</samp><samp·class="n">RequestId</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="ss">saved_to_file</samp><samp·class="p"·data-group-id="1574291559-1">}</samp><samp·class="w"> |
| 929 | ·</samp><samp·class="p"·data-group-id=" | 929 | ·</samp><samp·class="p"·data-group-id="1574291559-2">{</samp><samp·class="n">RequestId</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="p"·data-group-id="1574291559-3">{</samp><samp·class="ss">error</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Reason</[·...·truncated·by·diffoscope;·len:·98,·SHA:·e58fa050ca670316a5fef12c927cdadfda1dff3c1f8d44ed8ecea36ec7d5ce08·...·]9-2">}</samp><samp·class="w"> |
| 930 | ·</samp><samp·class="p"·data-group-id=" | 930 | ·</samp><samp·class="p"·data-group-id="1574291559-4">{</samp><samp·class="n">RequestId</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Result</samp><samp·class="p"·data-group-id="1574291559-4">}</samp><samp·class="w"> |
| 931 | ·</samp><samp·class="p"·data-group-id=" | 931 | ·</samp><samp·class="p"·data-group-id="1574291559-5">{</samp><samp·class="n">RequestId</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="ss">stream_start</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Headers</samp><samp·class="p"·data-group-id="1574291559-5">}</samp><samp·class="w"> |
| 932 | ·</samp><samp·class="p"·data-group-id=" | 932 | ·</samp><samp·class="p"·data-group-id="1574291559-6">{</samp><samp·class="n">RequestId</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="ss">stream_start</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Headers</samp><samp·class="p">,</samp><samp·class="w">[·...·truncated·by·diffoscope;·len:·81,·SHA:·b78d5a95f2505508d1bd6f141b8b4653de219418c70a782334a53cbec4423042·...·]9-6">}</samp><samp·class="w"> |
| 933 | ·</samp><samp·class="p"·data-group-id=" | 933 | ·</samp><samp·class="p"·data-group-id="1574291559-7">{</samp><samp·class="n">RequestId</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="ss">stream</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">BinBodyPart</samp><samp·class="p"·data-group-id="1574291559-7">}</samp><samp·class="w"> |
| 934 | ·</samp><samp·class="p"·data-group-id=" | 934 | ·</samp><samp·class="p"·data-group-id="1574291559-8">{</samp><samp·class="n">RequestId</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="ss">stream_end</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Headers</samp><samp·class="p"·data-group-id="1574291559-8">}</samp></code></pre><p>Default·is·the·<code·class="inline">pid</code>·of·the·process·calling·the·request·function·(<a·href="../../../../lib/../erts/doc/html/erlang.html#self/0"><code·class="inline">self/0</code></a>).</p><p><a·href=""·id="ipv6_host_with_brackets"></a></p></li><li><p><strong><code·class="inline">ipv6_host_with_brackets</code></strong>·-·Defines·when·parsing·the·Host-Port·part·of·an |
| 935 | URI·with·an·IPv6·address·with·brackets,·if·those·brackets·are·to·be·retained | 935 | URI·with·an·IPv6·address·with·brackets,·if·those·brackets·are·to·be·retained |
| 936 | (<code·class="inline">true</code>)·or·stripped·(<code·class="inline">false</code>).</p><p>Default·is·<code·class="inline">false</code>.</p></li></ul> | 936 | (<code·class="inline">true</code>)·or·stripped·(<code·class="inline">false</code>).</p><p>Default·is·<code·class="inline">false</code>.</p></li></ul> |
| 937 | ··</section> | 937 | ··</section> |
| 938 | </section> | 938 | </section> |
| 939 | <section·class="detail"·id="reset_cookies/0"> | 939 | <section·class="detail"·id="reset_cookies/0"> |
| 940 | ··<div·class="detail-header"> | 940 | ··<div·class="detail-header"> |
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| 137 | takeover,·configure·the·services·to·be·started·at·application·startup.·When | 137 | takeover,·configure·the·services·to·be·started·at·application·startup.·When |
| 138 | starting·the·<code·class="inline">Inets</code>·application,·the·<code·class="inline">Inets</code>·top·supervisor·starts·a·number·of | 138 | starting·the·<code·class="inline">Inets</code>·application,·the·<code·class="inline">Inets</code>·top·supervisor·starts·a·number·of |
| 139 | subsupervisors·and·worker·processes·for·handling·the·provided·services.·When | 139 | subsupervisors·and·worker·processes·for·handling·the·provided·services.·When |
| 140 | starting·services·dynamically,·new·children·are·added·to·the·supervision·tree, | 140 | starting·services·dynamically,·new·children·are·added·to·the·supervision·tree, |
| 141 | unless·the·service·is·started·with·the·standalone·option.·In·this·case·the | 141 | unless·the·service·is·started·with·the·standalone·option.·In·this·case·the |
| 142 | service·is·linked·to·the·calling·process·and·all·OTP·application·features,·such | 142 | service·is·linked·to·the·calling·process·and·all·OTP·application·features,·such |
| 143 | as·soft·upgrade,·are·lost.</p><p>Services·to·be·configured·for·startup·at·application·startup·are·to·be·put·into | 143 | as·soft·upgrade,·are·lost.</p><p>Services·to·be·configured·for·startup·at·application·startup·are·to·be·put·into |
| 144 | the·Erlang·node·configuration·file·on·the·following·form:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="7 | 144 | the·Erlang·node·configuration·file·on·the·following·form:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="4799970945-1">[</span><span·class="p"·data-group-id="4799970945-2">{</span><span·class="ss">inets</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4799970945-3">[</span><span·class="p"·data-group-id="4799970945-4">{</spa[·...·truncated·by·diffoscope;·len:·329,·SHA:·0dffb8e3aad9a733eab4d4524f31027677b203595bb57a5924e3e6150a1796db·...·]-1">]</span><span·class="p">.</span></code></pre><p>For·details·of·what·to·put·in·the·list·of·configured·services,·see·the |
| 145 | documentation·for·the·services·to·be·configured.</p> | 145 | documentation·for·the·services·to·be·configured.</p> |
| 146 | </div> | 146 | </div> |
| 147 | <div·class="bottom-actions"·id="bottom-actions"> | 147 | <div·class="bottom-actions"·id="bottom-actions"> |
| 148 | ··<div·class="bottom-actions-item"> | 148 | ··<div·class="bottom-actions-item"> |
| 149 | ······<a·href="introduction.html"·class="bottom-actions-button"·rel="prev"> | 149 | ······<a·href="introduction.html"·class="bottom-actions-button"·rel="prev"> |
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| 1 | <!DOCTYPE·HTML> | 1 | <!DOCTYPE·HTML> |
| 2 | <html·lang="en"> | 2 | <html·lang="en"> |
| 3 | <head> | 3 | <head> |
| 4 | <!--·Generated·by·javadoc·(21)·on·Tue·Mar·18·0 | 4 | <!--·Generated·by·javadoc·(21)·on·Tue·Mar·18·08:47:52·GMT·2025·--> |
| 5 | <title>All·Classes·and·Interfaces·(Java-Erlang·Interface·Library)</title> | 5 | <title>All·Classes·and·Interfaces·(Java-Erlang·Interface·Library)</title> |
| 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> | 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> |
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| 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> | 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> |
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| 5 | <title>AbstractConnection·(Java-Erlang·Interface·Library)</title> | 5 | <title>AbstractConnection·(Java-Erlang·Interface·Library)</title> |
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| 5 | <title>OtpErlangAtom·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpErlangAtom·(Java-Erlang·Interface·Library)</title> |
| 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> | 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> |
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| 8 | <meta·name="dc.created"·content="2025-03-18"> | 8 | <meta·name="dc.created"·content="2025-03-18"> |
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| 5 | <title>OtpErlangBinary·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpErlangBinary·(Java-Erlang·Interface·Library)</title> |
| 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> | 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> |
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| 8 | <meta·name="dc.created"·content="2025-03-18"> | 8 | <meta·name="dc.created"·content="2025-03-18"> |
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| 5 | <title>OtpErlangBitstr·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpErlangBitstr·(Java-Erlang·Interface·Library)</title> |
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| 8 | <meta·name="dc.created"·content="2025-03-18"> | 8 | <meta·name="dc.created"·content="2025-03-18"> |
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| 5 | <title>OtpErlangBoolean·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpErlangBoolean·(Java-Erlang·Interface·Library)</title> |
| 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> | 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> |
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| 8 | <meta·name="dc.created"·content="2025-03-18"> | 8 | <meta·name="dc.created"·content="2025-03-18"> |
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| 5 | <title>OtpErlangByte·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpErlangByte·(Java-Erlang·Interface·Library)</title> |
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| 8 | <meta·name="dc.created"·content="2025-03-18"> | 8 | <meta·name="dc.created"·content="2025-03-18"> |
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| 5 | <title>OtpErlangChar·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpErlangChar·(Java-Erlang·Interface·Library)</title> |
| 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> | 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> |
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| 8 | <meta·name="dc.created"·content="2025-03-18"> | 8 | <meta·name="dc.created"·content="2025-03-18"> |
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| 5 | <title>OtpErlangDecodeException·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpErlangDecodeException·(Java-Erlang·Interface·Library)</title> |
| 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> | 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> |
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| 8 | <meta·name="dc.created"·content="2025-03-18"> | 8 | <meta·name="dc.created"·content="2025-03-18"> |
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| 4 | <!--·Generated·by·javadoc·(21)·on·Tue·Mar·18·0 | 4 | <!--·Generated·by·javadoc·(21)·on·Tue·Mar·18·08:47:52·GMT·2025·--> |
| 5 | <title>OtpErlangDouble·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpErlangDouble·(Java-Erlang·Interface·Library)</title> |
| 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> | 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> |
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| 8 | <meta·name="dc.created"·content="2025-03-18"> | 8 | <meta·name="dc.created"·content="2025-03-18"> |
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| 5 | <title>OtpErlangException·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpErlangException·(Java-Erlang·Interface·Library)</title> |
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| 5 | <title>OtpErlangRef·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpErlangRef·(Java-Erlang·Interface·Library)</title> |
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| 5 | <title>OtpErlangShort·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpErlangShort·(Java-Erlang·Interface·Library)</title> |
| 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> | 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> |
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| 5 | <title>OtpErlangString·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpErlangString·(Java-Erlang·Interface·Library)</title> |
| 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> | 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> |
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| 8 | <meta·name="dc.created"·content="2025-03-18"> | 8 | <meta·name="dc.created"·content="2025-03-18"> |
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| 5 | <title>OtpErlangTuple·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpErlangTuple·(Java-Erlang·Interface·Library)</title> |
| 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> | 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> |
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| 8 | <meta·name="dc.created"·content="2025-03-18"> | 8 | <meta·name="dc.created"·content="2025-03-18"> |
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| 5 | <title>OtpErlangUInt·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpErlangUInt·(Java-Erlang·Interface·Library)</title> |
| 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> | 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> |
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| 8 | <meta·name="dc.created"·content="2025-03-18"> | 8 | <meta·name="dc.created"·content="2025-03-18"> |
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| 4 | <!--·Generated·by·javadoc·(21)·on·Tue·Mar·18·0 | 4 | <!--·Generated·by·javadoc·(21)·on·Tue·Mar·18·08:47:52·GMT·2025·--> |
| 5 | <title>OtpErlangUShort·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpErlangUShort·(Java-Erlang·Interface·Library)</title> |
| 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> | 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> |
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| 8 | <meta·name="dc.created"·content="2025-03-18"> | 8 | <meta·name="dc.created"·content="2025-03-18"> |
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| 4 | <!--·Generated·by·javadoc·(21)·on·Tue·Mar·18·0 | 4 | <!--·Generated·by·javadoc·(21)·on·Tue·Mar·18·08:47:52·GMT·2025·--> |
| 5 | <title>OtpException·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpException·(Java-Erlang·Interface·Library)</title> |
| 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> | 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> |
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| 8 | <meta·name="dc.created"·content="2025-03-18"> | 8 | <meta·name="dc.created"·content="2025-03-18"> |
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| 4 | <!--·Generated·by·javadoc·(21)·on·Tue·Mar·18·0 | 4 | <!--·Generated·by·javadoc·(21)·on·Tue·Mar·18·08:47:52·GMT·2025·--> |
| 5 | <title>OtpExternal·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpExternal·(Java-Erlang·Interface·Library)</title> |
| 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> | 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> |
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| 8 | <meta·name="dc.created"·content="2025-03-18"> | 8 | <meta·name="dc.created"·content="2025-03-18"> |
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| 5 | <title>OtpGenericTransportFactory·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpGenericTransportFactory·(Java-Erlang·Interface·Library)</title> |
| 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> | 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> |
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| 8 | <meta·name="dc.created"·content="2025-03-18"> | 8 | <meta·name="dc.created"·content="2025-03-18"> |
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| 4 | <!--·Generated·by·javadoc·(21)·on·Tue·Mar·18·0 | 4 | <!--·Generated·by·javadoc·(21)·on·Tue·Mar·18·08:47:52·GMT·2025·--> |
| 5 | <title>OtpInputStream·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpInputStream·(Java-Erlang·Interface·Library)</title> |
| 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> | 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> |
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| 8 | <meta·name="dc.created"·content="2025-03-18"> | 8 | <meta·name="dc.created"·content="2025-03-18"> |
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| 4 | <!--·Generated·by·javadoc·(21)·on·Tue·Mar·18·0 | 4 | <!--·Generated·by·javadoc·(21)·on·Tue·Mar·18·08:47:52·GMT·2025·--> |
| 5 | <title>OtpLocalNode·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpLocalNode·(Java-Erlang·Interface·Library)</title> |
| 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> | 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> |
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| 8 | <meta·name="dc.created"·content="2025-03-18"> | 8 | <meta·name="dc.created"·content="2025-03-18"> |
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| 5 | <title>OtpMbox·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpMbox·(Java-Erlang·Interface·Library)</title> |
| 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> | 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> |
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| 8 | <meta·name="dc.created"·content="2025-03-18"> | 8 | <meta·name="dc.created"·content="2025-03-18"> |
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| 5 | <title>OtpMsg·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpMsg·(Java-Erlang·Interface·Library)</title> |
| 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> | 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> |
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| 8 | <meta·name="dc.created"·content="2025-03-18"> | 8 | <meta·name="dc.created"·content="2025-03-18"> |
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| 5 | <title>OtpNode.Acceptor·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpNode.Acceptor·(Java-Erlang·Interface·Library)</title> |
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| 8 | <meta·name="dc.created"·content="2025-03-18"> | 8 | <meta·name="dc.created"·content="2025-03-18"> |
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| 5 | <title>OtpNode.Mailboxes·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpNode.Mailboxes·(Java-Erlang·Interface·Library)</title> |
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| 8 | <meta·name="dc.created"·content="2025-03-18"> | 8 | <meta·name="dc.created"·content="2025-03-18"> |
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| 5 | <title>OtpNode·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpNode·(Java-Erlang·Interface·Library)</title> |
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| 2 | <html·lang="en"> | 2 | <html·lang="en"> |
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| 5 | <title>OtpNodeStatus·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpNodeStatus·(Java-Erlang·Interface·Library)</title> |
| 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> | 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> |
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| 5 | <title>OtpOutputStream·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpOutputStream·(Java-Erlang·Interface·Library)</title> |
| 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> | 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> |
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| 2 | <html·lang="en"> | 2 | <html·lang="en"> |
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| 4 | <!--·Generated·by·javadoc·(21)·on·Tue·Mar·18·0 | 4 | <!--·Generated·by·javadoc·(21)·on·Tue·Mar·18·08:47:52·GMT·2025·--> |
| 5 | <title>OtpPeer·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpPeer·(Java-Erlang·Interface·Library)</title> |
| 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> | 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> |
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| 2 | <html·lang="en"> | 2 | <html·lang="en"> |
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| 5 | <title>OtpSelf·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpSelf·(Java-Erlang·Interface·Library)</title> |
| 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> | 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> |
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| 2 | <html·lang="en"> | 2 | <html·lang="en"> |
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| 4 | <!--·Generated·by·javadoc·(21)·on·Tue·Mar·18·0 | 4 | <!--·Generated·by·javadoc·(21)·on·Tue·Mar·18·08:47:52·GMT·2025·--> |
| 5 | <title>OtpServer·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpServer·(Java-Erlang·Interface·Library)</title> |
| 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> | 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> |
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| 5 | <title>OtpServerSocketTransport·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpServerSocketTransport·(Java-Erlang·Interface·Library)</title> |
| 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> | 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> |
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| 5 | <title>OtpServerTransport·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpServerTransport·(Java-Erlang·Interface·Library)</title> |
| 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> | 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> |
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| 2 | <html·lang="en"> | 2 | <html·lang="en"> |
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| 4 | <!--·Generated·by·javadoc·(21)·on·Tue·Mar·18·0 | 4 | <!--·Generated·by·javadoc·(21)·on·Tue·Mar·18·08:47:52·GMT·2025·--> |
| 5 | <title>OtpSocketTransport·(Java-Erlang·Interface·Library)</title> | 5 | <title>OtpSocketTransport·(Java-Erlang·Interface·Library)</title> |
| 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> | 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> |
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| 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> | 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> |
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| 5 | <title>Constant·Field·Values·(Java-Erlang·Interface·Library)</title> | 5 | <title>Constant·Field·Values·(Java-Erlang·Interface·Library)</title> |
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| 5 | <title>Class·Hierarchy·(Java-Erlang·Interface·Library)</title> | 5 | <title>Class·Hierarchy·(Java-Erlang·Interface·Library)</title> |
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| 5 | <title>Serialized·Form·(Java-Erlang·Interface·Library)</title> | 5 | <title>Serialized·Form·(Java-Erlang·Interface·Library)</title> |
| 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> | 6 | <meta·name="viewport"·content="width=device-width,·initial-scale=1"> |
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| 9 | <meta·name="description"·content="serialized·forms"> | 9 | <meta·name="description"·content="serialized·forms"> |
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| 140 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 140 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 141 | ··</a> | 141 | ··</a> |
| 142 | ··<span·class="text">File·Syntax</span> | 142 | ··<span·class="text">File·Syntax</span> |
| 143 | </h2> | 143 | </h2> |
| 144 | <p>The·application·resource·file·is·to·be·called·<code·class="inline">Application.app</code>,·where | 144 | <p>The·application·resource·file·is·to·be·called·<code·class="inline">Application.app</code>,·where |
| 145 | <code·class="inline">Application</code>·is·the·application·name.·The·file·is·to·be·located·in·directory | 145 | <code·class="inline">Application</code>·is·the·application·name.·The·file·is·to·be·located·in·directory |
| 146 | <code·class="inline">ebin</code>·for·the·application.</p><p>The·file·must·contain·a·single·Erlang·term,·which·is·called·an·<em>application | 146 | <code·class="inline">ebin</code>·for·the·application.</p><p>The·file·must·contain·a·single·Erlang·term,·which·is·called·an·<em>application |
| 147 | specification</em>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 147 | specification</em>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8196926697-1">{</span><span·class="ss">application</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Application</span><span·class="p">,</span><span·class="w"> |
| 148 | ··</span><span·class="p"·data-group-id=" | 148 | ··</span><span·class="p"·data-group-id="8196926697-2">[</span><span·class="p"·data-group-id="8196926697-3">{</span><span·class="ss">description</span><span·class="p">,</span><span·class="w">··</span><span·class="n">Description</span><span·class="p"·data-group-id="8196926697-3">}</span><span·class="p">,</span><span·class="w"> |
| 149 | ···</span><span·class="p"·data-group-id=" | 149 | ···</span><span·class="p"·data-group-id="8196926697-4">{</span><span·class="ss">id</span><span·class="p">,</span><span·class="w">···········</span><span·class="n">Id</span><span·class="p"·data-group-id="8196926697-4">}</span><span·class="p">,</span><span·class="w"> |
| 150 | ···</span><span·class="p"·data-group-id=" | 150 | ···</span><span·class="p"·data-group-id="8196926697-5">{</span><span·class="ss">vsn</span><span·class="p">,</span><span·class="w">··········</span><span·class="n">Vsn</span><span·class="p"·data-group-id="8196926697-5">}</span><span·class="p">,</span><span·class="w"> |
| 151 | ···</span><span·class="p"·data-group-id=" | 151 | ···</span><span·class="p"·data-group-id="8196926697-6">{</span><span·class="ss">modules</span><span·class="p">,</span><span·class="w">······</span><span·class="n">Modules</span><span·class="p"·data-group-id="8196926697-6">}</span><span·class="p">,</span><span·class="w"> |
| 152 | ···</span><span·class="p"·data-group-id=" | 152 | ···</span><span·class="p"·data-group-id="8196926697-7">{</span><span·class="ss">maxP</span><span·class="p">,</span><span·class="w">·········</span><span·class="n">MaxP</span><span·class="p"·data-group-id="8196926697-7">}</span><span·class="p">,</span><span·class="w"> |
| 153 | ···</span><span·class="p"·data-group-id=" | 153 | ···</span><span·class="p"·data-group-id="8196926697-8">{</span><span·class="ss">maxT</span><span·class="p">,</span><span·class="w">·········</span><span·class="n">MaxT</span><span·class="p"·data-group-id="8196926697-8">}</span><span·class="p">,</span><span·class="w"> |
| 154 | ···</span><span·class="p"·data-group-id=" | 154 | ···</span><span·class="p"·data-group-id="8196926697-9">{</span><span·class="ss">registered</span><span·class="p">,</span><span·class="w">···</span><span·class="n">Names</span><span·class="p"·data-group-id="8196926697-9">}</span><span·class="p">,</span><span·class="w"> |
| 155 | ···</span><span·class="p"·data-group-id=" | 155 | ···</span><span·class="p"·data-group-id="8196926697-10">{</span><span·class="ss">included_applications</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Apps</span><span·class="p"·data-group-id="8196926697-10">}</span><span·class="p">,</span><span·class="w"> |
| 156 | ···</span><span·class="p"·data-group-id=" | 156 | ···</span><span·class="p"·data-group-id="8196926697-11">{</span><span·class="ss">optional_applications</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Apps</span><span·class="p"·data-group-id="8196926697-11">}</span><span·class="p">,</span><span·class="w"> |
| 157 | ···</span><span·class="p"·data-group-id=" | 157 | ···</span><span·class="p"·data-group-id="8196926697-12">{</span><span·class="ss">applications</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Apps</span><span·class="p"·data-group-id="8196926697-12">}</span><span·class="p">,</span><span·class="w"> |
| 158 | ···</span><span·class="p"·data-group-id=" | 158 | ···</span><span·class="p"·data-group-id="8196926697-13">{</span><span·class="ss">env</span><span·class="p">,</span><span·class="w">··········</span><span·class="n">Env</span><span·class="p"·data-group-id="8196926697-13">}</span><span·class="p">,</span><span·class="w"> |
| 159 | ···</span><span·class="p"·data-group-id=" | 159 | ···</span><span·class="p"·data-group-id="8196926697-14">{</span><span·class="ss">mod</span><span·class="p">,</span><span·class="w">··········</span><span·class="n">Start</span><span·class="p"·data-group-id="8196926697-14">}</span><span·class="p">,</span><span·class="w"> |
| 160 | ···</span><span·class="p"·data-group-id=" | 160 | ···</span><span·class="p"·data-group-id="8196926697-15">{</span><span·class="ss">start_phases</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Phases</span><span·class="p"·data-group-id="8196926697-15">}</span><span·class="p">,</span><span·class="w"> |
| 161 | ···</span><span·class="p"·data-group-id=" | 161 | ···</span><span·class="p"·data-group-id="8196926697-16">{</span><span·class="ss">runtime_dependencies</span><span·class="p">,</span><span·class="w">·</span><span·class="n">RTDeps</span><span·class="p"·data-group-id="8196926697-16">}</span><span·class="p"·data-group-id="8196926697-2">]</span><span[·...·truncated·by·diffoscope;·len:·36,·SHA:·dcf99a6a25166697f13e5a88a2e8cee6bd825f984dabdfe403749e4f932e3112·...·]-1">}</span><span·class="p">.</span><span·class="w"> |
| 162 | ·············</span><span·class="n">Value</span><span·class="w">················</span><span·class="n">Default</span><span·class="w"> | 162 | ·············</span><span·class="n">Value</span><span·class="w">················</span><span·class="n">Default</span><span·class="w"> |
| 163 | ·············</span><span·class="o">--</span><span·class="o">--</span><span·class="o">-</span><span·class="w">················</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">-</span><span·class="w"> | 163 | ·············</span><span·class="o">--</span><span·class="o">--</span><span·class="o">-</span><span·class="w">················</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">-</span><span·class="w"> |
| 164 | </span><span·class="n">Application</span><span·class="w">··</span><span·class="nf">atom</span><span·class="p"·data-group-id=" | 164 | </span><span·class="n">Application</span><span·class="w">··</span><span·class="nf">atom</span><span·class="p"·data-group-id="8196926697-17">(</span><span·class="p"·data-group-id="8196926697-17">)</span><span·class="w">···············</span><span·class="o">-</span><span·class="w"> |
| 165 | </span><span·class="n">Description</span><span·class="w">··</span><span·class="nf">string</span><span·class="p"·data-group-id=" | 165 | </span><span·class="n">Description</span><span·class="w">··</span><span·class="nf">string</span><span·class="p"·data-group-id="8196926697-18">(</span><span·class="p"·data-group-id="8196926697-18">)</span><span·class="w">·············</span><span·class="s">""</span><span·class="w"> |
| 166 | </span><span·class="n">Id</span><span·class="w">···········</span><span·class="nf">string</span><span·class="p"·data-group-id=" | 166 | </span><span·class="n">Id</span><span·class="w">···········</span><span·class="nf">string</span><span·class="p"·data-group-id="8196926697-19">(</span><span·class="p"·data-group-id="8196926697-19">)</span><span·class="w">·············</span><span·class="s">""</span><span·class="w"> |
| 167 | </span><span·class="n">Vsn</span><span·class="w">··········</span><span·class="nf">string</span><span·class="p"·data-group-id=" | 167 | </span><span·class="n">Vsn</span><span·class="w">··········</span><span·class="nf">string</span><span·class="p"·data-group-id="8196926697-20">(</span><span·class="p"·data-group-id="8196926697-20">)</span><span·class="w">·············</span><span·class="s">""</span><span·class="w"> |
| 168 | </span><span·class="n">Modules</span><span·class="w">······</span><span·class="p"·data-group-id=" | 168 | </span><span·class="n">Modules</span><span·class="w">······</span><span·class="p"·data-group-id="8196926697-21">[</span><span·class="n">Module</span><span·class="p"·data-group-id="8196926697-21">]</span><span·class="w">·············</span><span·class="p"·data-group-id="8196926697-22">[</span><span·class="p"·data-group-id="8196926697-22">]</span><span·class="w"> |
| 169 | </span><span·class="n">MaxP</span><span·class="w">·········</span><span·class="nf">int</span><span·class="p"·data-group-id=" | 169 | </span><span·class="n">MaxP</span><span·class="w">·········</span><span·class="nf">int</span><span·class="p"·data-group-id="8196926697-23">(</span><span·class="p"·data-group-id="8196926697-23">)</span><span·class="w">················</span><span·class="ss">infinity</span><span·class="w"> |
| 170 | </span><span·class="n">MaxT</span><span·class="w">·········</span><span·class="nf">int</span><span·class="p"·data-group-id=" | 170 | </span><span·class="n">MaxT</span><span·class="w">·········</span><span·class="nf">int</span><span·class="p"·data-group-id="8196926697-24">(</span><span·class="p"·data-group-id="8196926697-24">)</span><span·class="w">················</span><span·class="ss">infinity</span><span·class="w"> |
| 171 | </span><span·class="n">Names</span><span·class="w">········</span><span·class="p"·data-group-id=" | 171 | </span><span·class="n">Names</span><span·class="w">········</span><span·class="p"·data-group-id="8196926697-25">[</span><span·class="n">Name</span><span·class="p"·data-group-id="8196926697-25">]</span><span·class="w">···············</span><span·class="p"·data-group-id="8196926697-26">[</span><span·class="p"·data-group-id="8196926697-26">]</span><span·class="w"> |
| 172 | </span><span·class="n">Apps</span><span·class="w">·········</span><span·class="p"·data-group-id=" | 172 | </span><span·class="n">Apps</span><span·class="w">·········</span><span·class="p"·data-group-id="8196926697-27">[</span><span·class="n">App</span><span·class="p"·data-group-id="8196926697-27">]</span><span·class="w">················</span><span·class="p"·data-group-id="8196926697-28">[</span><span·class="p"·data-group-id="8196926697-28">]</span><span·class="w"> |
| 173 | </span><span·class="n">Env</span><span·class="w">··········</span><span·class="p"·data-group-id=" | 173 | </span><span·class="n">Env</span><span·class="w">··········</span><span·class="p"·data-group-id="8196926697-29">[</span><span·class="p"·data-group-id="8196926697-30">{</span><span·class="n">Par</span><span·class="p">,</span><span·class="n">Val</span><span·class="p"·data-group-id="8196926697-30">}</span><span·class="p"·data-group-id="8196926697-29">]</[·...·truncated·by·diffoscope;·len:·133,·SHA:·6062397902a628c028329eaf6d97410e719f23d2143a54321b4187c24fcad8f1·...·]-31">]</span><span·class="w"> |
| 174 | </span><span·class="n">Start</span><span·class="w">········</span><span·class="p"·data-group-id=" | 174 | </span><span·class="n">Start</span><span·class="w">········</span><span·class="p"·data-group-id="8196926697-32">{</span><span·class="n">Module</span><span·class="p">,</span><span·class="n">StartArgs</span><span·class="p"·data-group-id="8196926697-32">}</span><span·class="w">···</span><span·class="p"·data-group-id="8196926697-33">[</span><span·class="p[·...·truncated·by·diffoscope;·len:·27,·SHA:·bdb85b7dd0b54598377da2f4f7ce591c2aa22485b85b712dcc11c09574737121·...·]-33">]</span><span·class="w"> |
| 175 | </span><span·class="n">Phases</span><span·class="w">·······</span><span·class="p"·data-group-id=" | 175 | </span><span·class="n">Phases</span><span·class="w">·······</span><span·class="p"·data-group-id="8196926697-34">[</span><span·class="p"·data-group-id="8196926697-35">{</span><span·class="n">Phase</span><span·class="p">,</span><span·class="n">PhaseArgs</span><span·class="p"·data-group-id="8196926697-35">}</span><span·class="p"·data-group-id="8196926697-34">]</span><span·class="w">··</span><span·class="ss">undefined</span><span·class="w"> |
| 176 | </span><span·class="n">RTDeps</span><span·class="w">·······</span><span·class="p"·data-group-id=" | 176 | </span><span·class="n">RTDeps</span><span·class="w">·······</span><span·class="p"·data-group-id="8196926697-36">[</span><span·class="n">ApplicationVersion</span><span·class="p"·data-group-id="8196926697-36">]</span><span·class="w">·</span><span·class="p"·data-group-id="8196926697-37">[</span><span·class="p"·data-group-id="8196926697-37">]</span><span·class="w"> |
| 177 | </span><span·class="n">Module</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">App</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Par</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Phase</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id=" | 177 | </span><span·class="n">Module</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">App</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Par</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Phase</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="8196926697-38">(</span><span·class="p"·data-group-id="8196926697-38">)</span><span·class="w"> |
| 178 | </span><span·class="n">Val</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">StartArgs</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">PhaseArgs</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id=" | 178 | </span><span·class="n">Val</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">StartArgs</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">PhaseArgs</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id="8196926697-39">(</span><span·class="p"·data-group-id="8196926697-39">)</span><span·class="w"> |
| 179 | </span><span·class="n">ApplicationVersion</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">string</span><span·class="p"·data-group-id=" | 179 | </span><span·class="n">ApplicationVersion</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">string</span><span·class="p"·data-group-id="8196926697-40">(</span><span·class="p"·data-group-id="8196926697-40">)</span></code></pre><ul><li><strong><code·class="inline">Application</code></strong>·-·Application·name.</li></ul><p>For·the·application·controller,·all·keys·are·optional.·The·respective·default |
| 180 | values·are·used·for·any·omitted·keys.</p><p>The·functions·in·<code·class="inline">systools</code>·require·more·information.·If·they·are·used,·the | 180 | values·are·used·for·any·omitted·keys.</p><p>The·functions·in·<code·class="inline">systools</code>·require·more·information.·If·they·are·used,·the |
| 181 | following·keys·are·mandatory:</p><ul><li><code·class="inline">description</code></li><li><code·class="inline">vsn</code></li><li><code·class="inline">modules</code></li><li><code·class="inline">registered</code></li><li><code·class="inline">applications</code></li></ul><p>The·other·keys·are·ignored·by·<code·class="inline">systools</code>.</p><ul><li><p><strong><code·class="inline">description</code></strong>·-·A·one-line·description·of·the·application.</p></li><li><p><strong><code·class="inline">id</code></strong>·-·Product·identification,·or·similar.</p></li><li><p><strong><code·class="inline">vsn</code></strong>·-·Version·of·the·application.</p></li><li><p><strong><code·class="inline">modules</code></strong>·-·All·modules·introduced·by·this·application.·<code·class="inline">systools</code>·uses | 181 | following·keys·are·mandatory:</p><ul><li><code·class="inline">description</code></li><li><code·class="inline">vsn</code></li><li><code·class="inline">modules</code></li><li><code·class="inline">registered</code></li><li><code·class="inline">applications</code></li></ul><p>The·other·keys·are·ignored·by·<code·class="inline">systools</code>.</p><ul><li><p><strong><code·class="inline">description</code></strong>·-·A·one-line·description·of·the·application.</p></li><li><p><strong><code·class="inline">id</code></strong>·-·Product·identification,·or·similar.</p></li><li><p><strong><code·class="inline">vsn</code></strong>·-·Version·of·the·application.</p></li><li><p><strong><code·class="inline">modules</code></strong>·-·All·modules·introduced·by·this·application.·<code·class="inline">systools</code>·uses |
| 182 | this·list·when·generating·start·scripts·and·tar·files.·A·module·can·only·be | 182 | this·list·when·generating·start·scripts·and·tar·files.·A·module·can·only·be |
| 183 | defined·in·one·application.</p></li><li><p><strong><code·class="inline">maxP</code></strong>·-·<em>Deprecated·-·is·ignored</em></p><p>Maximum·number·of·processes·allowed·in·the·application.</p></li><li><p><strong><code·class="inline">maxT</code></strong>·-·Maximum·time,·in·milliseconds,·that·the·application·is·allowed·to | 183 | defined·in·one·application.</p></li><li><p><strong><code·class="inline">maxP</code></strong>·-·<em>Deprecated·-·is·ignored</em></p><p>Maximum·number·of·processes·allowed·in·the·application.</p></li><li><p><strong><code·class="inline">maxT</code></strong>·-·Maximum·time,·in·milliseconds,·that·the·application·is·allowed·to |
| 184 | run.·After·the·specified·time,·the·application·terminates·automatically.</p></li><li><p><strong><code·class="inline">registered</code></strong>·-·All·names·of·registered·processes·started·in·this | 184 | run.·After·the·specified·time,·the·application·terminates·automatically.</p></li><li><p><strong><code·class="inline">registered</code></strong>·-·All·names·of·registered·processes·started·in·this |
| 185 | application.·<code·class="inline">systools</code>·uses·this·list·to·detect·name·clashes·between | 185 | application.·<code·class="inline">systools</code>·uses·this·list·to·detect·name·clashes·between |
| 186 | different·applications.</p></li><li><p><strong><code·class="inline">included_applications</code></strong>·-·All·applications·included·by·this·application. | 186 | different·applications.</p></li><li><p><strong><code·class="inline">included_applications</code></strong>·-·All·applications·included·by·this·application. |
| Offset 207, 15 lines modified | Offset 207, 15 lines modified | ||
| 207 | be·omitted·for·applications·without·processes,·typically·code·libraries,·for | 207 | be·omitted·for·applications·without·processes,·typically·code·libraries,·for |
| 208 | example,·STDLIB.</p></li><li><p><strong><code·class="inline">start_phases</code></strong>·-·A·list·of·start·phases·and·corresponding·start·arguments | 208 | example,·STDLIB.</p></li><li><p><strong><code·class="inline">start_phases</code></strong>·-·A·list·of·start·phases·and·corresponding·start·arguments |
| 209 | for·the·application.·If·this·key·is·present,·the·application·master,·in | 209 | for·the·application.·If·this·key·is·present,·the·application·master,·in |
| 210 | addition·to·the·usual·call·to·<code·class="inline">Module:start/2</code>,·also·calls | 210 | addition·to·the·usual·call·to·<code·class="inline">Module:start/2</code>,·also·calls |
| 211 | <code·class="inline">Module:start_phase(Phase,Type,PhaseArgs)</code>·for·each·start·phase·defined·by·key | 211 | <code·class="inline">Module:start_phase(Phase,Type,PhaseArgs)</code>·for·each·start·phase·defined·by·key |
| 212 | <code·class="inline">start_phases</code>.·Only·after·this·extended·start·procedure, | 212 | <code·class="inline">start_phases</code>.·Only·after·this·extended·start·procedure, |
| 213 | <code·class="inline">application:start(Application)</code>·returns.</p><p>Start·phases·can·be·used·to·synchronize·startup·of·an·application·and·its | 213 | <code·class="inline">application:start(Application)</code>·returns.</p><p>Start·phases·can·be·used·to·synchronize·startup·of·an·application·and·its |
| 214 | included·applications.·In·this·case,·key·<code·class="inline">mod</code>·must·be·specified·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 214 | included·applications.·In·this·case,·key·<code·class="inline">mod</code>·must·be·specified·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="5458730128-1">{</span><span·class="ss">mod</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5458730128-2">{</span><span·class="ss">application_starter</span><span·class="p">,</span><span·class="p"·data-group-id="54587301[·...·truncated·by·diffoscope;·len:·246,·SHA:·7baaeab8df9de5b232936d8b195af9c537d1cb28b80635d8026c9434fe254975·...·]-1">}</span></code></pre><p>The·application·master·then·calls·<code·class="inline">Module:start/2</code>·for·the·primary |
| 215 | application,·followed·by·calls·to·<code·class="inline">Module:start_phase/3</code>·for·each·start·phase | 215 | application,·followed·by·calls·to·<code·class="inline">Module:start_phase/3</code>·for·each·start·phase |
| 216 | (as·defined·for·the·primary·application),·both·for·the·primary·application·and | 216 | (as·defined·for·the·primary·application),·both·for·the·primary·application·and |
| 217 | for·each·of·its·included·applications,·for·which·the·start·phase·is·defined.</p><p>This·implies·that·for·an·included·application,·the·set·of·start·phases·must·be | 217 | for·each·of·its·included·applications,·for·which·the·start·phase·is·defined.</p><p>This·implies·that·for·an·included·application,·the·set·of·start·phases·must·be |
| 218 | a·subset·of·the·set·of·phases·defined·for·the·primary·application.·For·more | 218 | a·subset·of·the·set·of·phases·defined·for·the·primary·application.·For·more |
| 219 | information,·see·<a·href="../../../../doc/system/applications.html">OTP·Design·Principles</a>.</p></li><li><p><strong><code·class="inline"·id="runtime_dependencies">runtime_dependencies</code></strong>·-·A·list·of·application | 219 | information,·see·<a·href="../../../../doc/system/applications.html">OTP·Design·Principles</a>.</p></li><li><p><strong><code·class="inline"·id="runtime_dependencies">runtime_dependencies</code></strong>·-·A·list·of·application |
| 220 | versions·that·the·application·depends·on.·An·example·of·such·an·application | 220 | versions·that·the·application·depends·on.·An·example·of·such·an·application |
| 221 | version·is·<code·class="inline">"kernel-3.0"</code>.·Application·versions·specified·as·runtime | 221 | version·is·<code·class="inline">"kernel-3.0"</code>.·Application·versions·specified·as·runtime |
| Offset 1591, 15 lines modified | Offset 1591, 15 lines modified | ||
| 1591 | distributed.·The·argument·overrides·the·value·for·the·application·in·the·Kernel | 1591 | distributed.·The·argument·overrides·the·value·for·the·application·in·the·Kernel |
| 1592 | configuration·parameter·<code·class="inline">distributed</code>.·<code·class="inline">Application</code>·must·be·the·application | 1592 | configuration·parameter·<code·class="inline">distributed</code>.·<code·class="inline">Application</code>·must·be·the·application |
| 1593 | name·(same·as·in·the·first·argument).·If·a·node·crashes·and·<code·class="inline">Time</code>·is·specified, | 1593 | name·(same·as·in·the·first·argument).·If·a·node·crashes·and·<code·class="inline">Time</code>·is·specified, |
| 1594 | the·application·controller·waits·for·<code·class="inline">Time</code>·milliseconds·before·attempting·to | 1594 | the·application·controller·waits·for·<code·class="inline">Time</code>·milliseconds·before·attempting·to |
| 1595 | restart·the·application·on·another·node.·If·<code·class="inline">Time</code>·is·not·specified,·it·defaults | 1595 | restart·the·application·on·another·node.·If·<code·class="inline">Time</code>·is·not·specified,·it·defaults |
| 1596 | to·<code·class="inline">0</code>·and·the·application·is·restarted·immediately.</p><p><code·class="inline">Nodes</code>·is·a·list·of·node·names·where·the·application·can·run,·in·priority·from | 1596 | to·<code·class="inline">0</code>·and·the·application·is·restarted·immediately.</p><p><code·class="inline">Nodes</code>·is·a·list·of·node·names·where·the·application·can·run,·in·priority·from |
| 1597 | left·to·right.·Node·names·can·be·grouped·using·tuples·to·indicate·that·they·have | 1597 | left·to·right.·Node·names·can·be·grouped·using·tuples·to·indicate·that·they·have |
| 1598 | the·same·priority.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Nodes</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 1598 | the·same·priority.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Nodes</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7016790430-1">[</span><span·class="ss">cp1@cave</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7016790430-2">{</span><span·class="ss">cp2@cave</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">cp3@[·...·truncated·by·diffoscope;·len:·105,·SHA:·0ac8779798e3da89f59c7c9555519c02067a00ca55c3297ad1ae6407e2345c35·...·]-1">]</span></code></pre><p>This·means·that·the·application·is·preferably·to·be·started·at·<code·class="inline">cp1@cave</code>.·If |
| 1599 | <code·class="inline">cp1@cave</code>·is·down,·the·application·is·to·be·started·at·<code·class="inline">cp2@cave</code>·or | 1599 | <code·class="inline">cp1@cave</code>·is·down,·the·application·is·to·be·started·at·<code·class="inline">cp2@cave</code>·or |
| 1600 | <code·class="inline">cp3@cave</code>.</p><p>If·<code·class="inline">Distributed·==·default</code>,·the·value·for·the·application·in·the·Kernel | 1600 | <code·class="inline">cp3@cave</code>.</p><p>If·<code·class="inline">Distributed·==·default</code>,·the·value·for·the·application·in·the·Kernel |
| 1601 | configuration·parameter·<code·class="inline">distributed</code>·is·used.</p> | 1601 | configuration·parameter·<code·class="inline">distributed</code>·is·used.</p> |
| 1602 | ··</section> | 1602 | ··</section> |
| 1603 | </section> | 1603 | </section> |
| 1604 | <section·class="detail"·id="loaded_applications/0"> | 1604 | <section·class="detail"·id="loaded_applications/0"> |
| Offset 189, 19 lines modified | Offset 189, 19 lines modified | ||
| 189 | <a·href="#lib_dir/2"><code·class="inline">code:lib_dir/2</code></a>·and·<a·href="../../../../erts-15.2.3/doc/html/erl_prim_loader.html"><code·class="inline">erl_prim_loader</code></a>.</p></section><p>The·Erlang·archives·are·<code·class="inline">ZIP</code>·files·with·extension·<code·class="inline">.ez</code>.·Erlang·archives·can | 189 | <a·href="#lib_dir/2"><code·class="inline">code:lib_dir/2</code></a>·and·<a·href="../../../../erts-15.2.3/doc/html/erl_prim_loader.html"><code·class="inline">erl_prim_loader</code></a>.</p></section><p>The·Erlang·archives·are·<code·class="inline">ZIP</code>·files·with·extension·<code·class="inline">.ez</code>.·Erlang·archives·can |
| 190 | also·be·<a·href="../../../../lib/stdlib-6.2.1/doc/html/escript.html">enclosed·in·<code·class="inline">escript</code></a>·files·whose·file·extension·is·arbitrary.</p><p>Erlang·archive·files·can·contain·entire·Erlang·applications·or·parts·of | 190 | also·be·<a·href="../../../../lib/stdlib-6.2.1/doc/html/escript.html">enclosed·in·<code·class="inline">escript</code></a>·files·whose·file·extension·is·arbitrary.</p><p>Erlang·archive·files·can·contain·entire·Erlang·applications·or·parts·of |
| 191 | applications.·The·structure·in·an·archive·file·is·the·same·as·the·directory | 191 | applications.·The·structure·in·an·archive·file·is·the·same·as·the·directory |
| 192 | structure·for·an·application.·If·you,·for·example,·create·an·archive·of | 192 | structure·for·an·application.·If·you,·for·example,·create·an·archive·of |
| 193 | <code·class="inline">mnesia-4.4.7</code>,·the·archive·file·must·be·named·<code·class="inline">mnesia-4.4.7.ez</code>·and·it·must | 193 | <code·class="inline">mnesia-4.4.7</code>,·the·archive·file·must·be·named·<code·class="inline">mnesia-4.4.7.ez</code>·and·it·must |
| 194 | contain·a·top·directory·named·<code·class="inline">mnesia-4.4.7</code>.·If·the·version·part·of·the·name·is | 194 | contain·a·top·directory·named·<code·class="inline">mnesia-4.4.7</code>.·If·the·version·part·of·the·name·is |
| 195 | omitted,·it·must·also·be·omitted·in·the·archive.·That·is,·a·<code·class="inline">mnesia.ez</code>·archive | 195 | omitted,·it·must·also·be·omitted·in·the·archive.·That·is,·a·<code·class="inline">mnesia.ez</code>·archive |
| 196 | must·contain·a·<code·class="inline">mnesia</code>·top·directory.</p><p>An·archive·file·for·an·application·can,·for·example,·be·created·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">zip</span><span·class="p">:</span><span·class="nf">create</span><span·class="p"·data-group-id="5 | 196 | must·contain·a·<code·class="inline">mnesia</code>·top·directory.</p><p>An·archive·file·for·an·application·can,·for·example,·be·created·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">zip</span><span·class="p">:</span><span·class="nf">create</span><span·class="p"·data-group-id="7654029178-1">(</span><span·class="s">"mnesia-4.4.7.ez"</span><span·class="p">,</span><span·class="w"> |
| 197 | » </span><span·class="p"·data-group-id="5 | 197 | » </span><span·class="p"·data-group-id="7654029178-2">[</span><span·class="s">"mnesia-4.4.7"</span><span·class="p"·data-group-id="7654029178-2">]</span><span·class="p">,</span><span·class="w"> |
| 198 | » </span><span·class="p"·data-group-id="5 | 198 | » </span><span·class="p"·data-group-id="7654029178-3">[</span><span·class="p"·data-group-id="7654029178-4">{</span><span·class="ss">cwd</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">code</span><span·class="p">:</span><span·class="nf">lib_dir</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·124,·SHA:·18d6d1b1da4c0939f668fa6bd8cdcf9dad01e6ed81c77a6a336dc540aec00597·...·]-4">}</span><span·class="p">,</span><span·class="w"> |
| 199 | » ·</span><span·class="p"·data-group-id="5 | 199 | » ·</span><span·class="p"·data-group-id="7654029178-6">{</span><span·class="ss">compress</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">all</span><span·class="p"·data-group-id="7654029178-6">}</span><span·class="p">,</span><span·class="w"> |
| 200 | » ·</span><span·class="p"·data-group-id="5 | 200 | » ·</span><span·class="p"·data-group-id="7654029178-7">{</span><span·class="ss">uncompress</span><span·class="p">,</span><span·class="p"·data-group-id="7654029178-8">[</span><span·class="s">".beam"</span><span·class="p">,</span><span·class="s">".app"</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·180,·SHA:·eaec92272d7e82f45027dfcb0c3d6506637f57dcfaed451ed38251dc0c3eef28·...·]-1">)</span><span·class="p">.</span></code></pre><p>Any·file·in·the·archive·can·be·compressed,·but·to·speed·up·the·access·of |
| 201 | frequently·read·files,·it·can·be·a·good·idea·to·store·<code·class="inline">beam</code>·and·<code·class="inline">app</code>·files | 201 | frequently·read·files,·it·can·be·a·good·idea·to·store·<code·class="inline">beam</code>·and·<code·class="inline">app</code>·files |
| 202 | uncompressed·in·the·archive.</p><p>Normally·the·top·directory·of·an·application·is·located·in·library·directory | 202 | uncompressed·in·the·archive.</p><p>Normally·the·top·directory·of·an·application·is·located·in·library·directory |
| 203 | <code·class="inline">$OTPROOT/lib</code>·or·in·a·directory·referred·to·by·environment·variable·<code·class="inline">ERL_LIBS</code>. | 203 | <code·class="inline">$OTPROOT/lib</code>·or·in·a·directory·referred·to·by·environment·variable·<code·class="inline">ERL_LIBS</code>. |
| 204 | At·startup,·when·the·initial·code·path·is·computed,·the·code·server·also·looks | 204 | At·startup,·when·the·initial·code·path·is·computed,·the·code·server·also·looks |
| 205 | for·archive·files·in·these·directories·and·possibly·adds·<code·class="inline">ebin</code>·directories·in | 205 | for·archive·files·in·these·directories·and·possibly·adds·<code·class="inline">ebin</code>·directories·in |
| 206 | archives·to·the·code·path.·The·code·path·then·contains·paths·to·directories·that | 206 | archives·to·the·code·path.·The·code·path·then·contains·paths·to·directories·that |
| 207 | look·like·<code·class="inline">$OTPROOT/lib/mnesia.ez/mnesia/ebin</code>·or | 207 | look·like·<code·class="inline">$OTPROOT/lib/mnesia.ez/mnesia/ebin</code>·or |
| Offset 1819, 18 lines modified | Offset 1819, 18 lines modified | ||
| 1819 | none·of·the·modules·are·loaded·if·there·is·a·problem·with·any·of·the | 1819 | none·of·the·modules·are·loaded·if·there·is·a·problem·with·any·of·the |
| 1820 | modules.</p><p>Loading·can·fail·for·one·the·following·reasons:</p><ul><li><p><strong><code·class="inline">badfile</code></strong>·-·The·object·code·has·an·incorrect·format·or·the·module·name·in | 1820 | modules.</p><p>Loading·can·fail·for·one·the·following·reasons:</p><ul><li><p><strong><code·class="inline">badfile</code></strong>·-·The·object·code·has·an·incorrect·format·or·the·module·name·in |
| 1821 | the·object·code·is·not·the·expected·module·name.</p></li><li><p><strong><code·class="inline">nofile</code></strong>·-·No·file·with·object·code·exists.</p></li><li><p><strong><code·class="inline">on_load_not_allowed</code></strong>·-·A·module·contains·an | 1821 | the·object·code·is·not·the·expected·module·name.</p></li><li><p><strong><code·class="inline">nofile</code></strong>·-·No·file·with·object·code·exists.</p></li><li><p><strong><code·class="inline">on_load_not_allowed</code></strong>·-·A·module·contains·an |
| 1822 | <a·href="../../../../doc/system/code_loading.html#on_load">-on_load·function</a>.</p></li><li><p><strong><code·class="inline">duplicated</code></strong>·-·A·module·is·included·more·than·once·in·<code·class="inline">Modules</code>.</p></li><li><p><strong><code·class="inline">not_purged</code></strong>·-·The·object·code·cannot·be·loaded·because·an·old·version·of | 1822 | <a·href="../../../../doc/system/code_loading.html#on_load">-on_load·function</a>.</p></li><li><p><strong><code·class="inline">duplicated</code></strong>·-·A·module·is·included·more·than·once·in·<code·class="inline">Modules</code>.</p></li><li><p><strong><code·class="inline">not_purged</code></strong>·-·The·object·code·cannot·be·loaded·because·an·old·version·of |
| 1823 | the·code·already·exists.</p></li><li><p><strong><code·class="inline">sticky_directory</code></strong>·-·The·object·code·resides·in·a·sticky·directory.</p></li><li><p><strong><code·class="inline">pending_on_load</code></strong>·-·A·previously·loaded·module·contains·an·<code·class="inline">-on_load</code> | 1823 | the·code·already·exists.</p></li><li><p><strong><code·class="inline">sticky_directory</code></strong>·-·The·object·code·resides·in·a·sticky·directory.</p></li><li><p><strong><code·class="inline">pending_on_load</code></strong>·-·A·previously·loaded·module·contains·an·<code·class="inline">-on_load</code> |
| 1824 | function·that·never·finished.</p></li></ul><p>If·it·is·important·to·minimize·the·time·that·an·application·is·inactive·while | 1824 | function·that·never·finished.</p></li></ul><p>If·it·is·important·to·minimize·the·time·that·an·application·is·inactive·while |
| 1825 | changing·code,·use·<a·href="#prepare_loading/1"><code·class="inline">prepare_loading/1</code></a>·and·<a·href="#finish_loading/1"><code·class="inline">finish_loading/1</code></a>·instead·of | 1825 | changing·code,·use·<a·href="#prepare_loading/1"><code·class="inline">prepare_loading/1</code></a>·and·<a·href="#finish_loading/1"><code·class="inline">finish_loading/1</code></a>·instead·of |
| 1826 | <a·href="#atomic_load/1"><code·class="inline">atomic_load/1</code></a>.·Here·is·an·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 1826 | <a·href="#atomic_load/1"><code·class="inline">atomic_load/1</code></a>.·Here·is·an·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="0706344870-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">Prepared</span><span·class="p"·data-group-id="0706344870-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">code</span>[·...·truncated·by·diffoscope;·len:·187,·SHA:·532ff42d291e03711ec6022d14762c6464812201d6443876e17e61f62b04f2ad·...·]-2">)</span><span·class="p">,</span><span·class="w"> |
| 1827 | </span><span·class="c1">%%·Put·the·application·into·an·inactive·state·or·do·any</span><span·class="w"> | 1827 | </span><span·class="c1">%%·Put·the·application·into·an·inactive·state·or·do·any</span><span·class="w"> |
| 1828 | </span><span·class="c1">%%·other·preparation·needed·before·changing·the·code.</span><span·class="w"> | 1828 | </span><span·class="c1">%%·other·preparation·needed·before·changing·the·code.</span><span·class="w"> |
| 1829 | </span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">code</span><span·class="p">:</span><span·class="nf">finish_loading</span><span·class="p"·data-group-id=" | 1829 | </span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">code</span><span·class="p">:</span><span·class="nf">finish_loading</span><span·class="p"·data-group-id="0706344870-3">(</span><span·class="n">Prepared</span><span·class="p"·data-group-id="0706344870-3">)</span><span·class="p">,</span><span·class="w"> |
| 1830 | </span><span·class="c1">%%·Resume·the·application.</span></code></pre> | 1830 | </span><span·class="c1">%%·Resume·the·application.</span></code></pre> |
| 1831 | ··</section> | 1831 | ··</section> |
| 1832 | </section> | 1832 | </section> |
| 1833 | <section·class="detail"·id="clash/0"> | 1833 | <section·class="detail"·id="clash/0"> |
| 1834 | ··<div·class="detail-header"> | 1834 | ··<div·class="detail-header"> |
| 1835 | ····<a·href="#clash/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1835 | ····<a·href="#clash/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 2343, 16 lines modified | Offset 2343, 16 lines modified | ||
| 2343 | ······</div> | 2343 | ······</div> |
| 2344 | <p>Returns·the·object·code·for·module·<code·class="inline">Module</code>·if·found·in·the·code·path.</p><p>Returns·<code·class="inline">{Module,·Binary,·Filename}</code>·if·successful,·otherwise | 2344 | <p>Returns·the·object·code·for·module·<code·class="inline">Module</code>·if·found·in·the·code·path.</p><p>Returns·<code·class="inline">{Module,·Binary,·Filename}</code>·if·successful,·otherwise |
| 2345 | <code·class="inline">error</code>.·<code·class="inline">Binary</code>·is·a·binary·data·object,·which·contains·the·object | 2345 | <code·class="inline">error</code>.·<code·class="inline">Binary</code>·is·a·binary·data·object,·which·contains·the·object |
| 2346 | code·for·the·module.·This·is·useful·if·code·is·to·be·loaded·on·a | 2346 | code·for·the·module.·This·is·useful·if·code·is·to·be·loaded·on·a |
| 2347 | remote·node·in·a·distributed·system.·For·example,·loading·module | 2347 | remote·node·in·a·distributed·system.·For·example,·loading·module |
| 2348 | <code·class="inline">Module</code>·on·a·node·<code·class="inline">Node</code>·is·done·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 2348 | <code·class="inline">Module</code>·on·a·node·<code·class="inline">Node</code>·is·done·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 2349 | </span><span·class="p"·data-group-id=" | 2349 | </span><span·class="p"·data-group-id="9388085118-1">{</span><span·class="p">_</span><span·class="n">Module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Binary</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Filename</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·313,·SHA:·fcfadcc36a9d34103fb284290b0f50e3cd00f87a5f24cd29bbeec14de0d9f2e0·...·]8-2">)</span><span·class="p">,</span><span·class="w"> |
| 2350 | </span><span·class="nc">erpc</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id=" | 2350 | </span><span·class="nc">erpc</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id="9388085118-3">(</span><span·class="n">Node</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">code</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">load_binary</span><span·class="p">,</span><span·class="w">·</span>[·...·truncated·by·diffoscope;·len:·331,·SHA:·47bd27b79efcc80bb3f738942d034b3d380f58c54f810a33c9ca6e41b71c4bf3·...·]8-3">)</span><span·class="p">,</span><span·class="w"> |
| 2351 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre> | 2351 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre> |
| 2352 | ··</section> | 2352 | ··</section> |
| 2353 | </section> | 2353 | </section> |
| 2354 | <section·class="detail"·id="get_path/0"> | 2354 | <section·class="detail"·id="get_path/0"> |
| 2355 | ··<div·class="detail-header"> | 2355 | ··<div·class="detail-header"> |
| 2356 | ····<a·href="#get_path/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 2356 | ····<a·href="#get_path/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 2455, 15 lines modified | Offset 2455, 15 lines modified | ||
| 2455 | ······<div·class="specs"> | 2455 | ······<div·class="specs"> |
| 2456 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·lib_dir()·->·<a·href="file.html#t:filename/0">file:filename</a>().</pre> | 2456 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·lib_dir()·->·<a·href="file.html#t:filename/0">file:filename</a>().</pre> |
| 2457 | ······</div> | 2457 | ······</div> |
| 2458 | <p>Returns·the·library·directory,·<code·class="inline">$OTPROOT/lib</code>,·where·<code·class="inline">$OTPROOT</code>·is·the·root | 2458 | <p>Returns·the·library·directory,·<code·class="inline">$OTPROOT/lib</code>,·where·<code·class="inline">$OTPROOT</code>·is·the·root |
| 2459 | directory·of·Erlang/OTP.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">code</span><span·class="p">:</span><span·class="nf">lib_dir</span><span·class="p"·data-group-id=" | 2459 | directory·of·Erlang/OTP.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">code</span><span·class="p">:</span><span·class="nf">lib_dir</span><span·class="p"·data-group-id="7121163026-1">(</span><span·class="p"·data-group-id="7121163026-1">)</span><span·class="p">.</span><span·class="w"> |
| 2460 | </span><span·class="s">"/usr/local/otp/lib"</span></code></pre> | 2460 | </span><span·class="s">"/usr/local/otp/lib"</span></code></pre> |
| 2461 | ··</section> | 2461 | ··</section> |
| 2462 | </section> | 2462 | </section> |
| 2463 | <section·class="detail"·id="lib_dir/1"> | 2463 | <section·class="detail"·id="lib_dir/1"> |
| 2464 | ··<div·class="detail-header"> | 2464 | ··<div·class="detail-header"> |
| 2465 | ····<a·href="#lib_dir/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 2465 | ····<a·href="#lib_dir/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 2492, 15 lines modified | Offset 2492, 15 lines modified | ||
| 2492 | an·<code·class="inline">ebin</code>·subdirectory,·the·path·to·this·directory·is·returned·(not·the·<code·class="inline">ebin</code> | 2492 | an·<code·class="inline">ebin</code>·subdirectory,·the·path·to·this·directory·is·returned·(not·the·<code·class="inline">ebin</code> |
| 2493 | directory).</p><p>If·the·directory·refers·to·a·directory·in·an·archive,·the·archive·name·is | 2493 | directory).</p><p>If·the·directory·refers·to·a·directory·in·an·archive,·the·archive·name·is |
| 2494 | stripped·away·before·the·path·is·returned.·For·example,·if·directory | 2494 | stripped·away·before·the·path·is·returned.·For·example,·if·directory |
| 2495 | <code·class="inline">/usr/local/otp/lib/mnesia-4.2.2.ez/mnesia-4.2.2/ebin</code>·is·in·the·path, | 2495 | <code·class="inline">/usr/local/otp/lib/mnesia-4.2.2.ez/mnesia-4.2.2/ebin</code>·is·in·the·path, |
| 2496 | <code·class="inline">/usr/local/otp/lib/mnesia-4.2.2/ebin</code>·is·returned.·This·means·that·the·library | 2496 | <code·class="inline">/usr/local/otp/lib/mnesia-4.2.2/ebin</code>·is·returned.·This·means·that·the·library |
| 2497 | directory·for·an·application·is·the·same,·regardless·if·the·application·resides | 2497 | directory·for·an·application·is·the·same,·regardless·if·the·application·resides |
| 2498 | in·an·archive·or·not.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Warning</h4><p>Archives·are·experimental.·In·a·future·release,·they·can·be·removed·or | 2498 | in·an·archive·or·not.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Warning</h4><p>Archives·are·experimental.·In·a·future·release,·they·can·be·removed·or |
| 2499 | their·behavior·can·change.</p></section><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">code</span><span·class="p">:</span><span·class="nf">lib_dir</span><span·class="p"·data-group-id=" | 2499 | their·behavior·can·change.</p></section><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">code</span><span·class="p">:</span><span·class="nf">lib_dir</span><span·class="p"·data-group-id="8072759319-1">(</span><span·class="ss">mnesia</span><span·class="p"·data-group-id="8072759319-1">)</span><span·class="p">.</span><span·class="w"> |
| 2500 | </span><span·class="s">"/usr/local/otp/lib/mnesia-4.23"</span></code></pre><p>Returns·<code·class="inline">{error,·bad_name}</code>·if·<code·class="inline">Name</code>·is·not·the·name·of·an·application·under | 2500 | </span><span·class="s">"/usr/local/otp/lib/mnesia-4.23"</span></code></pre><p>Returns·<code·class="inline">{error,·bad_name}</code>·if·<code·class="inline">Name</code>·is·not·the·name·of·an·application·under |
| 2501 | <code·class="inline">$OTPROOT/lib</code>·or·on·a·directory·referred·to·through·environment·variable | 2501 | <code·class="inline">$OTPROOT/lib</code>·or·on·a·directory·referred·to·through·environment·variable |
| 2502 | <code·class="inline">ERL_LIBS</code>.·Fails·with·an·exception·if·<code·class="inline">Name</code>·has·the·wrong·type.</p><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>For·backward·compatibility,·<code·class="inline">Name</code>·is·also·allowed·to·be·a·string.·That·will | 2502 | <code·class="inline">ERL_LIBS</code>.·Fails·with·an·exception·if·<code·class="inline">Name</code>·has·the·wrong·type.</p><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>For·backward·compatibility,·<code·class="inline">Name</code>·is·also·allowed·to·be·a·string.·That·will |
| 2503 | probably·change·in·a·future·release.</p></section> | 2503 | probably·change·in·a·future·release.</p></section> |
| 2504 | ··</section> | 2504 | ··</section> |
| 2505 | </section> | 2505 | </section> |
| 2506 | <section·class="detail"·id="lib_dir/2"> | 2506 | <section·class="detail"·id="lib_dir/2"> |
| Offset 2533, 15 lines modified | Offset 2533, 15 lines modified | ||
| 2533 | <p>Returns·the·path·to·a·subdirectory·directly·under·the·top·directory·of·an | 2533 | <p>Returns·the·path·to·a·subdirectory·directly·under·the·top·directory·of·an |
| 2534 | application.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Change</h4><p>This·function·is·part·of·the·archive·support,·which·is·an·experimental | 2534 | application.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Change</h4><p>This·function·is·part·of·the·archive·support,·which·is·an·experimental |
| 2535 | feature·that·will·be·changed·or·removed·in·a·future·release.</p></section><p>Normally·the·subdirectories·reside·under·the·top·directory·for·the | 2535 | feature·that·will·be·changed·or·removed·in·a·future·release.</p></section><p>Normally·the·subdirectories·reside·under·the·top·directory·for·the |
| 2536 | application,·but·when·applications·at·least·partly·reside·in·an·archive,·the | 2536 | application,·but·when·applications·at·least·partly·reside·in·an·archive,·the |
| 2537 | situation·is·different.·Some·of·the·subdirectories·can·reside·as·regular | 2537 | situation·is·different.·Some·of·the·subdirectories·can·reside·as·regular |
| 2538 | directories·while·others·reside·in·an·archive·file.·It·is·not·checked·whether | 2538 | directories·while·others·reside·in·an·archive·file.·It·is·not·checked·whether |
| 2539 | this·directory·exists.</p><p>Instead·of·using·this·function,·use·<a·href="#lib_dir/1"><code·class="inline">code:lib_dir/1</code></a> | 2539 | this·directory·exists.</p><p>Instead·of·using·this·function,·use·<a·href="#lib_dir/1"><code·class="inline">code:lib_dir/1</code></a> |
| 2540 | and·<a·href="../../../../lib/stdlib-6.2.1/doc/html/filename.html#join/2"><code·class="inline">filename:join/2</code></a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">join</span><span·class="p"·data-group-id=" | 2540 | and·<a·href="../../../../lib/stdlib-6.2.1/doc/html/filename.html#join/2"><code·class="inline">filename:join/2</code></a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">join</span><span·class="p"·data-group-id="7085381959-1">(</span><span·class="nc">code</span><span·class="p">:</span><span·class="nf">lib_dir</span><span·class="p"·data-group-id="7085381959-2">(</span><span·class="ss">megaco</span><span·class="p"·data-group-id="7085381959-2">)</span><span·class="p"[·...·truncated·by·diffoscope;·len:·113,·SHA:·766c1dfedc6ad94b09608eda31d0e46b52fb91850ca0b76f34b51896f6193fc7·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 2541 | </span><span·class="s">"/usr/local/otp/lib/megaco-3.9.1.1/priv"</span></code></pre><p>Fails·with·an·exception·if·<code·class="inline">Name</code>·or·<code·class="inline">SubDir</code>·has·the·wrong·type.</p> | 2541 | </span><span·class="s">"/usr/local/otp/lib/megaco-3.9.1.1/priv"</span></code></pre><p>Fails·with·an·exception·if·<code·class="inline">Name</code>·or·<code·class="inline">SubDir</code>·has·the·wrong·type.</p> |
| 2542 | ··</section> | 2542 | ··</section> |
| 2543 | </section> | 2543 | </section> |
| 2544 | <section·class="detail"·id="load_abs/1"> | 2544 | <section·class="detail"·id="load_abs/1"> |
| 2545 | ··<div·class="detail-header"> | 2545 | ··<div·class="detail-header"> |
| 2546 | ····<a·href="#load_abs/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 2546 | ····<a·href="#load_abs/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 2964, 15 lines modified | Offset 2964, 15 lines modified | ||
| 2964 | ······<div·class="specs"> | 2964 | ······<div·class="specs"> |
| 2965 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·root_dir()·->·<a·href="file.html#t:filename/0">file:filename</a>().</pre> | 2965 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·root_dir()·->·<a·href="file.html#t:filename/0">file:filename</a>().</pre> |
| 2966 | ······</div> | 2966 | ······</div> |
| 2967 | <p>Returns·the·root·directory·of·Erlang/OTP,·which·is·the·directory·where·it·is | 2967 | <p>Returns·the·root·directory·of·Erlang/OTP,·which·is·the·directory·where·it·is |
| 2968 | installed.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">code</span><span·class="p">:</span><span·class="nf">root_dir</span><span·class="p"·data-group-id=" | 2968 | installed.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">code</span><span·class="p">:</span><span·class="nf">root_dir</span><span·class="p"·data-group-id="6088117471-1">(</span><span·class="p"·data-group-id="6088117471-1">)</span><span·class="p">.</span><span·class="w"> |
| 2969 | </span><span·class="s">"/usr/local/otp"</span></code></pre> | 2969 | </span><span·class="s">"/usr/local/otp"</span></code></pre> |
| 2970 | ··</section> | 2970 | ··</section> |
| 2971 | </section> | 2971 | </section> |
| 2972 | <section·class="detail"·id="set_coverage_mode/1"> | 2972 | <section·class="detail"·id="set_coverage_mode/1"> |
| 2973 | ··<div·class="detail-header"> | 2973 | ··<div·class="detail-header"> |
| 2974 | ····<a·href="#set_coverage_mode/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 2974 | ····<a·href="#set_coverage_mode/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 148, 17 lines modified | Offset 148, 17 lines modified | ||
| 148 | (see·<a·href="../../../../erts-15.2.3/doc/html/erl_cmd.html"><code·class="inline">erts:erl(1)</code></a>).</p><p>The·value·of·a·configuration·parameter·is·retrieved·by·calling | 148 | (see·<a·href="../../../../erts-15.2.3/doc/html/erl_cmd.html"><code·class="inline">erts:erl(1)</code></a>).</p><p>The·value·of·a·configuration·parameter·is·retrieved·by·calling |
| 149 | <code·class="inline">application:get_env/1,2</code>.</p><h2·id="file-syntax"·class="section-heading"> | 149 | <code·class="inline">application:get_env/1,2</code>.</p><h2·id="file-syntax"·class="section-heading"> |
| 150 | ··<a·href="#file-syntax"·class="hover-link"> | 150 | ··<a·href="#file-syntax"·class="hover-link"> |
| 151 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 151 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 152 | ··</a> | 152 | ··</a> |
| 153 | ··<span·class="text">File·Syntax</span> | 153 | ··<span·class="text">File·Syntax</span> |
| 154 | </h2> | 154 | </h2> |
| 155 | <p>The·configuration·file·is·to·be·called·<code·class="inline">Name.config</code>,·where·<code·class="inline">Name</code>·is·any·name.</p><p>File·<code·class="inline">.config</code>·contains·a·single·Erlang·term·and·has·the·following·syntax:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 155 | <p>The·configuration·file·is·to·be·called·<code·class="inline">Name.config</code>,·where·<code·class="inline">Name</code>·is·any·name.</p><p>File·<code·class="inline">.config</code>·contains·a·single·Erlang·term·and·has·the·following·syntax:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8060233343-1">[</span><span·class="p"·data-group-id="8060233343-2">{</span><span·class="n">Application1</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8060233343-3">[</span><span·class="p"·data-group-id="8060233343-4">[·...·truncated·by·diffoscope;·len:·379,·SHA:·42f3fba38b826f74791e07fe7505fd33247d61eeac7879ea61c69ee916d5a166·...·]-2">}</span><span·class="p">,</span><span·class="w"> |
| 156 | ·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 156 | ·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 157 | ·</span><span·class="p"·data-group-id=" | 157 | ·</span><span·class="p"·data-group-id="8060233343-5">{</span><span·class="n">ApplicationN</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8060233343-6">[</span><span·class="p"·data-group-id="8060233343-7">{</span><span·class="n">ParN1</span><span·class="p">,[·...·truncated·by·diffoscope;·len:·379,·SHA:·c734227abfd58515d7766da6855536cca24ff23a115c9a364b251f60de54e69c·...·]-1">]</span><span·class="p">.</span></code></pre><ul><li><p><strong><code·class="inline">Application·=·atom()</code></strong>·-·Application·name.</p></li><li><p><strong><code·class="inline">Par·=·atom()</code></strong>·-·Name·of·a·configuration·parameter.</p></li><li><p><strong><code·class="inline">Val·=·term()</code></strong>·-·Value·of·a·configuration·parameter.</p></li></ul><h2·id="sys-config"·class="section-heading"> |
| 158 | ··<a·href="#sys-config"·class="hover-link"> | 158 | ··<a·href="#sys-config"·class="hover-link"> |
| 159 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 159 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 160 | ··</a> | 160 | ··</a> |
| 161 | ··<span·class="text">sys.config</span> | 161 | ··<span·class="text">sys.config</span> |
| 162 | </h2> | 162 | </h2> |
| 163 | <p>When·starting·Erlang·in·embedded·mode,·it·is·assumed·that·exactly·one·system | 163 | <p>When·starting·Erlang·in·embedded·mode,·it·is·assumed·that·exactly·one·system |
| 164 | configuration·file·is·used,·named·<code·class="inline">sys.config</code>.·This·file·is·to·be·located·in | 164 | configuration·file·is·used,·named·<code·class="inline">sys.config</code>.·This·file·is·to·be·located·in |
| Offset 150, 28 lines modified | Offset 150, 28 lines modified | ||
| 150 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 150 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 151 | ··</a> | 151 | ··</a> |
| 152 | ··<span·class="text">The·"Docs"·format</span> | 152 | ··<span·class="text">The·"Docs"·format</span> |
| 153 | </h2> | 153 | </h2> |
| 154 | <p>In·both·storages,·the·documentation·is·written·in·the·exactly·same·format:·an | 154 | <p>In·both·storages,·the·documentation·is·written·in·the·exactly·same·format:·an |
| 155 | Erlang·term·serialized·to·binary·via | 155 | Erlang·term·serialized·to·binary·via |
| 156 | <a·href="../../../../erts-15.2.3/doc/html/erlang.html#term_to_binary/1"><code·class="inline">term_to_binary/1</code></a>.·The·term·can·be·optionally | 156 | <a·href="../../../../erts-15.2.3/doc/html/erlang.html#term_to_binary/1"><code·class="inline">term_to_binary/1</code></a>.·The·term·can·be·optionally |
| 157 | compressed·when·serialized.·It·must·follow·the·type·specification·below:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 157 | compressed·when·serialized.·It·must·follow·the·type·specification·below:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="0865989492-1">{</span><span·class="ss">docs_v1</span><span·class="p">,</span><span·class="w"> |
| 158 | ·</span><span·class="n">Anno</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nc">erl_anno</span><span·class="p">:</span><span·class="nf">anno</span><span·class="p"·data-group-id=" | 158 | ·</span><span·class="n">Anno</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nc">erl_anno</span><span·class="p">:</span><span·class="nf">anno</span><span·class="p"·data-group-id="0865989492-2">(</span><span·class="p"·data-group-id="0865989492-2">)</span><span·class="p">,</span><span·class="w"> |
| 159 | ·</span><span·class="n">BeamLanguage</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id=" | 159 | ·</span><span·class="n">BeamLanguage</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="0865989492-3">(</span><span·class="p"·data-group-id="0865989492-3">)</span><span·class="p">,</span><span·class="w"> |
| 160 | ·</span><span·class="n">Format</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">binary</span><span·class="p"·data-group-id=" | 160 | ·</span><span·class="n">Format</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">binary</span><span·class="p"·data-group-id="0865989492-4">(</span><span·class="p"·data-group-id="0865989492-4">)</span><span·class="p">,</span><span·class="w"> |
| 161 | ·</span><span·class="n">ModuleDoc</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 161 | ·</span><span·class="n">ModuleDoc</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="0865989492-5">#{</span><span·class="n">DocLanguage</span><span·class="w">·</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">DocValue</span><span·class="p"·data-group-id="0865989492-5">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">none</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">hidden</span><span·class="p">,</span><span·class="w"> |
| 162 | ·</span><span·class="n">Metadata</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">map</span><span·class="p"·data-group-id=" | 162 | ·</span><span·class="n">Metadata</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">map</span><span·class="p"·data-group-id="0865989492-6">(</span><span·class="p"·data-group-id="0865989492-6">)</span><span·class="p">,</span><span·class="w"> |
| 163 | ·</span><span·class="n">Docs</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w"> | 163 | ·</span><span·class="n">Docs</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w"> |
| 164 | ···</span><span·class="p"·data-group-id=" | 164 | ···</span><span·class="p"·data-group-id="0865989492-7">[</span><span·class="p"·data-group-id="0865989492-8">{</span><span·class="p"·data-group-id="0865989492-9">{</span><span·class="n">Kind</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Name</span><span·class="p">,</span><s[·...·truncated·by·diffoscope;·len:·91,·SHA:·0626ff61fd0b6a0cf23f4f0bda3327968954ee437944401f132ce92e122fb89a·...·]-9">}</span><span·class="p">,</span><span·class="w"> |
| 165 | ·····</span><span·class="n">Anno</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nc">erl_anno</span><span·class="p">:</span><span·class="nf">anno</span><span·class="p"·data-group-id=" | 165 | ·····</span><span·class="n">Anno</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nc">erl_anno</span><span·class="p">:</span><span·class="nf">anno</span><span·class="p"·data-group-id="0865989492-10">(</span><span·class="p"·data-group-id="0865989492-10">)</span><span·class="p">,</span><span·class="w"> |
| 166 | ·····</span><span·class="n">Signature</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 166 | ·····</span><span·class="n">Signature</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="0865989492-11">[</span><span·class="nf">binary</span><span·class="p"·data-group-id="0865989492-12">(</span><span·class="p"·data-group-id="0865989492-12">)</span><span·class="p"·data-group-id="0865989492-11">]</span><span·class="p">,</span><span·class="w"> |
| 167 | ·····</span><span·class="n">Doc</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 167 | ·····</span><span·class="n">Doc</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="0865989492-13">#{</span><span·class="n">DocLanguage</span><span·class="w">·</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">DocValue</span><span·class="p"·data-group-id="0865989492-13">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">none</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">hidden</span><span·class="p">,</span><span·class="w"> |
| 168 | ·····</span><span·class="n">Metadata</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">map</span><span·class="p"·data-group-id=" | 168 | ·····</span><span·class="n">Metadata</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">map</span><span·class="p"·data-group-id="0865989492-14">(</span><span·class="p"·data-group-id="0865989492-14">)</span><span·class="w"> |
| 169 | ····</span><span·class="p"·data-group-id=" | 169 | ····</span><span·class="p"·data-group-id="0865989492-8">}</span><span·class="p"·data-group-id="0865989492-7">]</span><span·class="p"·data-group-id="0865989492-1">}</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="n">DocLanguage</span><span·class="w">·</[·...·truncated·by·diffoscope;·len:·202,·SHA:·c8ef18de6390161fbd7299e6b354ab77898b8aa6500228a1cf6d732bdf427786·...·]-15">)</span><span·class="p">,</span><span·class="w"> |
| 170 | ·············</span><span·class="n">DocValue</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">binary</span><span·class="p"·data-group-id=" | 170 | ·············</span><span·class="n">DocValue</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">binary</span><span·class="p"·data-group-id="0865989492-16">(</span><span·class="p"·data-group-id="0865989492-16">)</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id="0865989492-17">(</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·16,·SHA:·a71b7808cb8481c1d779678cb7f0e61afca806cae0a136afd364a67e35bb1edd·...·]-17">)</span></code></pre><p>where·in·the·root·tuple·we·have:</p><ul><li><p><strong><code·class="inline">Anno</code></strong>·-·annotation·(line,·column,·file)·of·the·definition·itself·(see |
| 171 | <a·href="../../../../lib/stdlib-6.2.1/doc/html/erl_anno.html"><code·class="inline">erl_anno</code></a>)</p></li><li><p><strong><code·class="inline">BeamLanguage</code></strong>·-·an·atom·representing·the·language,·for·example:·<code·class="inline">erlang</code>, | 171 | <a·href="../../../../lib/stdlib-6.2.1/doc/html/erl_anno.html"><code·class="inline">erl_anno</code></a>)</p></li><li><p><strong><code·class="inline">BeamLanguage</code></strong>·-·an·atom·representing·the·language,·for·example:·<code·class="inline">erlang</code>, |
| 172 | <code·class="inline">elixir</code>,·<code·class="inline">lfe</code>,·<code·class="inline">alpaca</code>,·and·so·on</p></li><li><p><strong><code·class="inline">Format</code></strong>·-·the·mime·type·of·the·documentation,·such·as·<code·class="inline"><<"text/markdown">></code> | 172 | <code·class="inline">elixir</code>,·<code·class="inline">lfe</code>,·<code·class="inline">alpaca</code>,·and·so·on</p></li><li><p><strong><code·class="inline">Format</code></strong>·-·the·mime·type·of·the·documentation,·such·as·<code·class="inline"><<"text/markdown">></code> |
| 173 | or·<code·class="inline"><<"application/erlang+html">></code>.·For·details·of·the·format·used·by·Erlang | 173 | or·<code·class="inline"><<"application/erlang+html">></code>.·For·details·of·the·format·used·by·Erlang |
| 174 | see·the·<a·href="../../../../lib/edoc-1.3.2/doc/html/doc_storage.html"><code·class="inline">EEP-48·Chapter</code></a>·in·EDoc's·User's | 174 | see·the·<a·href="../../../../lib/edoc-1.3.2/doc/html/doc_storage.html"><code·class="inline">EEP-48·Chapter</code></a>·in·EDoc's·User's |
| 175 | Guide.</p></li><li><p><strong><code·class="inline">ModuleDoc</code></strong>·-·a·map·with·the·documentation·language·as·key,·such·as | 175 | Guide.</p></li><li><p><strong><code·class="inline">ModuleDoc</code></strong>·-·a·map·with·the·documentation·language·as·key,·such·as |
| 176 | <code·class="inline"><<"en">></code>·or·<code·class="inline"><<"pt_BR">></code>,·and·the·documentation·as·a·binary·value.·It·can | 176 | <code·class="inline"><<"en">></code>·or·<code·class="inline"><<"pt_BR">></code>,·and·the·documentation·as·a·binary·value.·It·can |
| 177 | be·atom·<code·class="inline">none</code>·if·no·documentation·exists·or·the·atom·<code·class="inline">hidden</code>·if | 177 | be·atom·<code·class="inline">none</code>·if·no·documentation·exists·or·the·atom·<code·class="inline">hidden</code>·if |
| Offset 351, 16 lines modified | Offset 351, 16 lines modified | ||
| 351 | ···················Reason·::·address·|·<a·href="file.html#t:posix/0">file:posix</a>().</pre> | 351 | ···················Reason·::·address·|·<a·href="file.html#t:posix/0">file:posix</a>().</pre> |
| 352 | ······</div> | 352 | ······</div> |
| 353 | <p>Called·by·<a·href="net_adm.html"><code·class="inline">net_adm:names/0</code></a>.·<code·class="inline">Host</code>·defaults·to·the·localhost. | 353 | <p>Called·by·<a·href="net_adm.html"><code·class="inline">net_adm:names/0</code></a>.·<code·class="inline">Host</code>·defaults·to·the·localhost. |
| 354 | Returns·the·names·and·associated·port·numbers·of·the·Erlang·nodes·that·<code·class="inline">epmd</code> | 354 | Returns·the·names·and·associated·port·numbers·of·the·Erlang·nodes·that·<code·class="inline">epmd</code> |
| 355 | registered·at·the·specified·host.·Returns·<code·class="inline">{error,·address}</code>·if·<code·class="inline">epmd</code>·is·not | 355 | registered·at·the·specified·host.·Returns·<code·class="inline">{error,·address}</code>·if·<code·class="inline">epmd</code>·is·not |
| 356 | operational.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">(arne@dunn)1>·</span><span·class="nc">erl_epmd</span><span·class="p">:</span><span·class="nf">names</span><span·class="p"·data-group-id=" | 356 | operational.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">(arne@dunn)1>·</span><span·class="nc">erl_epmd</span><span·class="p">:</span><span·class="nf">names</span><span·class="p"·data-group-id="1534863130-1">(</span><span·class="ss">localhost</span><span·class="p"·data-group-id="1534863130-1">)</span><span·class="p">.</span><span·class="w"> |
| 357 | </span><span·class="p"·data-group-id=" | 357 | </span><span·class="p"·data-group-id="1534863130-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="1534863130-3">[</span><span·class="p"·data-group-id="1534863130-4">{</span><span·class="s">"arne"</span><span·class="p">,</span><span·class="mi[·...·truncated·by·diffoscope;·len:·161,·SHA:·09be16599f2d38a96852e7f89414bc7192c09a5547c19a5006374236c9d7a195·...·]-2">}</span></code></pre> |
| 358 | ··</section> | 358 | ··</section> |
| 359 | </section> | 359 | </section> |
| 360 | <section·class="detail"·id="port_please/2"> | 360 | <section·class="detail"·id="port_please/2"> |
| 361 | ··<div·class="detail-header"> | 361 | ··<div·class="detail-header"> |
| 362 | ····<a·href="#port_please/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 362 | ····<a·href="#port_please/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 363 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 363 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 1183, 28 lines modified | Offset 1183, 28 lines modified | ||
| 1183 | at·the·client·side.</li></ul><p>The·call·<code·class="inline">erpc:multicall(Nodes,·Module,·Function,·Args)</code>·is·equivalent·to·the | 1183 | at·the·client·side.</li></ul><p>The·call·<code·class="inline">erpc:multicall(Nodes,·Module,·Function,·Args)</code>·is·equivalent·to·the |
| 1184 | call·<code·class="inline">erpc:multicall(Nodes,·Module,·Function,·Args,·infinity)</code>.·These·calls·are | 1184 | call·<code·class="inline">erpc:multicall(Nodes,·Module,·Function,·Args,·infinity)</code>.·These·calls·are |
| 1185 | also·equivalent·to·calling·<code·class="inline">my_multicall(Nodes,·Module,·Function,·Args)</code>·below | 1185 | also·equivalent·to·calling·<code·class="inline">my_multicall(Nodes,·Module,·Function,·Args)</code>·below |
| 1186 | if·one·disregard·performance·and·failure·behavior.·<code·class="inline">multicall()</code>·can·utilize·a | 1186 | if·one·disregard·performance·and·failure·behavior.·<code·class="inline">multicall()</code>·can·utilize·a |
| 1187 | selective·receive·optimization·which·removes·the·need·to·scan·the·message·queue | 1187 | selective·receive·optimization·which·removes·the·need·to·scan·the·message·queue |
| 1188 | from·the·beginning·in·order·to·find·a·matching·message.·The | 1188 | from·the·beginning·in·order·to·find·a·matching·message.·The |
| 1189 | <code·class="inline">send_request()/receive_response()</code>·combination·can,·however,·not·utilize·this | 1189 | <code·class="inline">send_request()/receive_response()</code>·combination·can,·however,·not·utilize·this |
| 1190 | optimization.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">my_multicall</span><span·class="p"·data-group-id="03 | 1190 | optimization.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">my_multicall</span><span·class="p"·data-group-id="0322347015-1">(</span><span·class="n">Nodes</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Function</span><span·class="p">,</span><span·class="w">·</span><spa[·...·truncated·by·diffoscope;·len:·64,·SHA:·9b8e1281d0b1ad80f82983b661b9d9f01c1d045bb447b35d34d7465c1c07fd54·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1191 | ··</span><span·class="n">ReqIds</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">map</span><span·class="p"·data-group-id="03 | 1191 | ··</span><span·class="n">ReqIds</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">map</span><span·class="p"·data-group-id="0322347015-2">(</span><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="0322347015-3">(</span><span·class="n">Node</span><span·class="p"·data-group-id="0322347015-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1192 | ·······················</span><span·class="nc">erpc</span><span·class="p">:</span><span·class="nf">send_request</span><span·class="p"·data-group-id="03 | 1192 | ·······················</span><span·class="nc">erpc</span><span·class="p">:</span><span·class="nf">send_request</span><span·class="p"·data-group-id="0322347015-4">(</span><span·class="n">Node</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Function</span><span·class="p">,</span><span·class="w">·</span><span[·...·truncated·by·diffoscope;·len:·63,·SHA:·99d7626d57445834fbcf6ecfa65f776350858589cbd6a6ccc837fe691a269b1d·...·]-4">)</span><span·class="w"> |
| 1193 | ·····················</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 1193 | ·····················</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 1194 | ·····················</span><span·class="n">Nodes</span><span·class="p"·data-group-id="03 | 1194 | ·····················</span><span·class="n">Nodes</span><span·class="p"·data-group-id="0322347015-2">)</span><span·class="p">,</span><span·class="w"> |
| 1195 | ··</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">map</span><span·class="p"·data-group-id="03 | 1195 | ··</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">map</span><span·class="p"·data-group-id="0322347015-5">(</span><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="0322347015-6">(</span><span·class="n">ReqId</span><span·class="p"·data-group-id="0322347015-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1196 | ··············</span><span·class="k">try</span><span·class="w"> | 1196 | ··············</span><span·class="k">try</span><span·class="w"> |
| 1197 | ················</span><span·class="p"·data-group-id="03 | 1197 | ················</span><span·class="p"·data-group-id="0322347015-7">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">erpc</span><span·class="p">:</span><span·class="nf">receive_response</span><span·class="p"·data-group-id="0322347015-8">(</span><span·class="n">R[·...·truncated·by·diffoscope;·len:·185,·SHA:·84790cb85b9c85c29b1a69ae5b683a0f400a8a6b44a6df7fdb633f06d7a7262b·...·]-7">}</span><span·class="w"> |
| 1198 | ··············</span><span·class="k">catch</span><span·class="w"> | 1198 | ··············</span><span·class="k">catch</span><span·class="w"> |
| 1199 | ················</span><span·class="n">Class</span><span·class="p">:</span><span·class="n">Reason</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 1199 | ················</span><span·class="n">Class</span><span·class="p">:</span><span·class="n">Reason</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1200 | ··················</span><span·class="p"·data-group-id="03 | 1200 | ··················</span><span·class="p"·data-group-id="0322347015-9">{</span><span·class="n">Class</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="p"·data-group-id="0322347015-9">}</span><span·class="w"> |
| 1201 | ··············</span><span·class="k">end</span><span·class="w"> | 1201 | ··············</span><span·class="k">end</span><span·class="w"> |
| 1202 | ············</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 1202 | ············</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 1203 | ············</span><span·class="n">ReqIds</span><span·class="p"·data-group-id="03 | 1203 | ············</span><span·class="n">ReqIds</span><span·class="p"·data-group-id="0322347015-5">)</span><span·class="p">.</span></code></pre><p>If·an·<code·class="inline">erpc</code>·operation·fails,·but·it·is·unknown·if·the·function·is/will·be |
| 1204 | applied·(that·is,·a·timeout,·connection·loss,·or·an·improper·<code·class="inline">Nodes</code>·list),·the | 1204 | applied·(that·is,·a·timeout,·connection·loss,·or·an·improper·<code·class="inline">Nodes</code>·list),·the |
| 1205 | caller·will·not·receive·any·further·information·about·the·result·if/when·the | 1205 | caller·will·not·receive·any·further·information·about·the·result·if/when·the |
| 1206 | applied·function·completes.·If·the·applied·function·communicates·with·the | 1206 | applied·function·completes.·If·the·applied·function·communicates·with·the |
| 1207 | calling·process,·such·communication·may,·of·course,·reach·the·calling·process.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>You·cannot·make·<em>any</em>·assumptions·about·the·process·that·will·perform·the | 1207 | calling·process,·such·communication·may,·of·course,·reach·the·calling·process.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>You·cannot·make·<em>any</em>·assumptions·about·the·process·that·will·perform·the |
| 1208 | <code·class="inline">apply()</code>.·It·may·be·the·calling·process·itself,·a·server,·or·a·freshly | 1208 | <code·class="inline">apply()</code>.·It·may·be·the·calling·process·itself,·a·server,·or·a·freshly |
| 1209 | spawned·process.</p></section> | 1209 | spawned·process.</p></section> |
| 1210 | ··</section> | 1210 | ··</section> |
| Offset 1346, 17 lines modified | Offset 1346, 17 lines modified | ||
| 1346 | exception·if/when·an·invalid·<code·class="inline">RequestId</code>·is·detected·or·if·an·invalid·<code·class="inline">Timeout</code> | 1346 | exception·if/when·an·invalid·<code·class="inline">RequestId</code>·is·detected·or·if·an·invalid·<code·class="inline">Timeout</code> |
| 1347 | is·passed.</p><p>A·call·to·the·function·<code·class="inline">my_call(Node,·Module,·Function,·Args,·Timeout)</code>·below·is | 1347 | is·passed.</p><p>A·call·to·the·function·<code·class="inline">my_call(Node,·Module,·Function,·Args,·Timeout)</code>·below·is |
| 1348 | equivalent·to·the·call | 1348 | equivalent·to·the·call |
| 1349 | <a·href="#call/5"><code·class="inline">erpc:call(Node,·Module,·Function,·Args,·Timeout)</code></a>·if·one·disregards | 1349 | <a·href="#call/5"><code·class="inline">erpc:call(Node,·Module,·Function,·Args,·Timeout)</code></a>·if·one·disregards |
| 1350 | performance.·<code·class="inline">call()</code>·can·utilize·a·selective·receive·optimization·which·removes | 1350 | performance.·<code·class="inline">call()</code>·can·utilize·a·selective·receive·optimization·which·removes |
| 1351 | the·need·to·scan·the·message·queue·from·the·beginning·in·order·to·find·a | 1351 | the·need·to·scan·the·message·queue·from·the·beginning·in·order·to·find·a |
| 1352 | matching·message.·The·<code·class="inline">send_request()/receive_response()</code>·combination·can, | 1352 | matching·message.·The·<code·class="inline">send_request()/receive_response()</code>·combination·can, |
| 1353 | however,·not·utilize·this·optimization.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">my_call</span><span·class="p"·data-group-id=" | 1353 | however,·not·utilize·this·optimization.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">my_call</span><span·class="p"·data-group-id="5360399128-1">(</span><span·class="n">Node</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Function</span><span·class="p">,</span><span·class="w">·</span><sp[·...·truncated·by·diffoscope;·len:·143,·SHA:·b8454bd9121ac102a60e605e57db3c4bd2cf235ae65f384e6ef105d383ef04cd·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1354 | ··</span><span·class="n">RequestId</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erpc</span><span·class="p">:</span><span·class="nf">send_request</span><span·class="p"·data-group-id=" | 1354 | ··</span><span·class="n">RequestId</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erpc</span><span·class="p">:</span><span·class="nf">send_request</span><span·class="p"·data-group-id="5360399128-2">(</span><span·class="n">Node</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Function</span><span·class="p">,</span><span·class="w">·</span><sp[·...·truncated·by·diffoscope;·len:·65,·SHA:·b90e50c4dc981d262c2b18b5c8218ca9ffca9d9e3f70d7a0b5292be01511bea2·...·]-2">)</span><span·class="p">,</span><span·class="w"> |
| 1355 | ··</span><span·class="nc">erpc</span><span·class="p">:</span><span·class="nf">receive_response</span><span·class="p"·data-group-id=" | 1355 | ··</span><span·class="nc">erpc</span><span·class="p">:</span><span·class="nf">receive_response</span><span·class="p"·data-group-id="5360399128-3">(</span><span·class="n">RequestId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Timeout</span><span·class="p"·data-group-id="5360399128-3">)</span><span·class="p">.</span></code></pre><p>If·the·<code·class="inline">erpc</code>·operation·fails,·but·it·is·unknown·if·the·function·is/will·be |
| 1356 | applied·(that·is,·a·timeout,·or·a·connection·loss),·the·caller·will·not·receive | 1356 | applied·(that·is,·a·timeout,·or·a·connection·loss),·the·caller·will·not·receive |
| 1357 | any·further·information·about·the·result·if/when·the·applied·function·completes. | 1357 | any·further·information·about·the·result·if/when·the·applied·function·completes. |
| 1358 | If·the·applied·function·explicitly·communicates·with·the·calling·process,·such | 1358 | If·the·applied·function·explicitly·communicates·with·the·calling·process,·such |
| 1359 | communication·may,·of·course,·reach·the·calling·process.</p> | 1359 | communication·may,·of·course,·reach·the·calling·process.</p> |
| 1360 | ··</section> | 1360 | ··</section> |
| 1361 | </section> | 1361 | </section> |
| 1362 | <section·class="detail"·id="receive_response/3"> | 1362 | <section·class="detail"·id="receive_response/3"> |
| Offset 1637, 17 lines modified | Offset 1637, 17 lines modified | ||
| 1637 | about·to·save·the·request·identifier·in·a·request·identifier·collection,·you·may | 1637 | about·to·save·the·request·identifier·in·a·request·identifier·collection,·you·may |
| 1638 | want·to·consider·using·<a·href="#send_request/6"><code·class="inline">send_request/6</code></a>·instead.</p><p>A·call·to·the·function·<code·class="inline">my_call(Node,·Module,·Function,·Args,·Timeout)</code>·below·is | 1638 | want·to·consider·using·<a·href="#send_request/6"><code·class="inline">send_request/6</code></a>·instead.</p><p>A·call·to·the·function·<code·class="inline">my_call(Node,·Module,·Function,·Args,·Timeout)</code>·below·is |
| 1639 | equivalent·to·the·call | 1639 | equivalent·to·the·call |
| 1640 | <a·href="#call/5"><code·class="inline">erpc:call(Node,·Module,·Function,·Args,·Timeout)</code></a>·if·one·disregards | 1640 | <a·href="#call/5"><code·class="inline">erpc:call(Node,·Module,·Function,·Args,·Timeout)</code></a>·if·one·disregards |
| 1641 | performance.·<code·class="inline">call()</code>·can·utilize·a·selective·receive·optimization·which·removes | 1641 | performance.·<code·class="inline">call()</code>·can·utilize·a·selective·receive·optimization·which·removes |
| 1642 | the·need·to·scan·the·message·queue·from·the·beginning·in·order·to·find·a | 1642 | the·need·to·scan·the·message·queue·from·the·beginning·in·order·to·find·a |
| 1643 | matching·message.·The·<code·class="inline">send_request()/receive_response()</code>·combination·can, | 1643 | matching·message.·The·<code·class="inline">send_request()/receive_response()</code>·combination·can, |
| 1644 | however,·not·utilize·this·optimization.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">my_call</span><span·class="p"·data-group-id=" | 1644 | however,·not·utilize·this·optimization.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">my_call</span><span·class="p"·data-group-id="1128831377-1">(</span><span·class="n">Node</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Function</span><span·class="p">,</span><span·class="w">·</span><sp[·...·truncated·by·diffoscope;·len:·143,·SHA:·c934011a00c02e9e6e36ca3c6edcdded88c68be8af7793ecadeb4682e1f5437d·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1645 | ··</span><span·class="n">RequestId</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erpc</span><span·class="p">:</span><span·class="nf">send_request</span><span·class="p"·data-group-id=" | 1645 | ··</span><span·class="n">RequestId</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erpc</span><span·class="p">:</span><span·class="nf">send_request</span><span·class="p"·data-group-id="1128831377-2">(</span><span·class="n">Node</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Function</span><span·class="p">,</span><span·class="w">·</span><sp[·...·truncated·by·diffoscope;·len:·65,·SHA:·1eaf4e865915c6027b983ec7c52d03499ccef9257dd8beee4e1e01cf536e5857·...·]-2">)</span><span·class="p">,</span><span·class="w"> |
| 1646 | ··</span><span·class="nc">erpc</span><span·class="p">:</span><span·class="nf">receive_response</span><span·class="p"·data-group-id=" | 1646 | ··</span><span·class="nc">erpc</span><span·class="p">:</span><span·class="nf">receive_response</span><span·class="p"·data-group-id="1128831377-3">(</span><span·class="n">RequestId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Timeout</span><span·class="p"·data-group-id="1128831377-3">)</span><span·class="p">.</span></code></pre><p>Fails·with·an·<code·class="inline">{erpc,·badarg}</code>·<code·class="inline">error</code>·exception·if:</p><ul><li><code·class="inline">Node</code>·is·not·an·atom.</li><li><code·class="inline">Module</code>·is·not·an·atom.</li><li><code·class="inline">Function</code>·is·not·an·atom.</li><li><code·class="inline">Args</code>·is·not·a·list.·Note·that·the·list·is·not·verified·to·be·a·proper·list |
| 1647 | at·the·client·side.</li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>You·cannot·make·<em>any</em>·assumptions·about·the·process·that·will·perform·the | 1647 | at·the·client·side.</li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>You·cannot·make·<em>any</em>·assumptions·about·the·process·that·will·perform·the |
| 1648 | <code·class="inline">apply()</code>.·It·may·be·a·server,·or·a·freshly·spawned·process.</p></section><p>Equivalent·to | 1648 | <code·class="inline">apply()</code>.·It·may·be·a·server,·or·a·freshly·spawned·process.</p></section><p>Equivalent·to |
| 1649 | <a·href="#send_request/6"><code·class="inline">erpc:send_request(Node,·erlang,·apply,·[Fun,[]]),·Label,·RequestIdCollection)</code></a>.</p><p>Fails·with·an·<code·class="inline">{erpc,·badarg}</code>·<code·class="inline">error</code>·exception·if:</p><ul><li><code·class="inline">Node</code>·is·not·an·atom.</li><li><code·class="inline">Fun</code>·is·not·a·fun·of·zero·arity.</li><li><code·class="inline">RequestIdCollection</code>·is·detected·not·to·be·request·identifier·collection.</li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>You·cannot·make·<em>any</em>·assumptions·about·the·process·that·will·perform·the | 1649 | <a·href="#send_request/6"><code·class="inline">erpc:send_request(Node,·erlang,·apply,·[Fun,[]]),·Label,·RequestIdCollection)</code></a>.</p><p>Fails·with·an·<code·class="inline">{erpc,·badarg}</code>·<code·class="inline">error</code>·exception·if:</p><ul><li><code·class="inline">Node</code>·is·not·an·atom.</li><li><code·class="inline">Fun</code>·is·not·a·fun·of·zero·arity.</li><li><code·class="inline">RequestIdCollection</code>·is·detected·not·to·be·request·identifier·collection.</li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>You·cannot·make·<em>any</em>·assumptions·about·the·process·that·will·perform·the |
| 1650 | <code·class="inline">apply()</code>.·It·may·be·a·server,·or·a·freshly·spawned·process.</p></section> | 1650 | <code·class="inline">apply()</code>.·It·may·be·a·server,·or·a·freshly·spawned·process.</p></section> |
| 1651 | ··</section> | 1651 | ··</section> |
| 1652 | </section> | 1652 | </section> |
| 1653 | <section·class="detail"·id="send_request/6"> | 1653 | <section·class="detail"·id="send_request/6"> |
| Offset 176, 39 lines modified | Offset 176, 39 lines modified | ||
| 176 | running·its·file·server·as·slave·to·the·file·server·of·another·node,·and·the | 176 | running·its·file·server·as·slave·to·the·file·server·of·another·node,·and·the |
| 177 | other·node·runs·on·some·other·host·machine,·they·can·have·different·file | 177 | other·node·runs·on·some·other·host·machine,·they·can·have·different·file |
| 178 | systems.·However,·this·is·seldom·a·problem.</p></section><p><a·href="#open/2"><code·class="inline">open/2</code></a>·can·be·given·the·options·<code·class="inline">delayed_write</code>·and·<code·class="inline">read_ahead</code>·to·turn·on | 178 | systems.·However,·this·is·seldom·a·problem.</p></section><p><a·href="#open/2"><code·class="inline">open/2</code></a>·can·be·given·the·options·<code·class="inline">delayed_write</code>·and·<code·class="inline">read_ahead</code>·to·turn·on |
| 179 | caching,·which·will·reduce·the·number·of·operating·system·calls·and·greatly | 179 | caching,·which·will·reduce·the·number·of·operating·system·calls·and·greatly |
| 180 | improve·performance·for·small·reads·and·writes.·However,·the·overhead·won't | 180 | improve·performance·for·small·reads·and·writes.·However,·the·overhead·won't |
| 181 | disappear·completely·and·it's·best·to·keep·the·number·of·file·operations·to·a | 181 | disappear·completely·and·it's·best·to·keep·the·number·of·file·operations·to·a |
| 182 | minimum.·As·a·contrived·example,·the·following·function·writes·4MB·in·2.5 | 182 | minimum.·As·a·contrived·example,·the·following·function·writes·4MB·in·2.5 |
| 183 | seconds·when·tested:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">create_file_slow</span><span·class="p"·data-group-id=" | 183 | seconds·when·tested:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">create_file_slow</span><span·class="p"·data-group-id="2774303461-1">(</span><span·class="n">Name</span><span·class="p"·data-group-id="2774303461-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 184 | ····</span><span·class="p"·data-group-id=" | 184 | ····</span><span·class="p"·data-group-id="2774303461-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Fd</span><span·class="p"·data-group-id="2774303461-2">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·clas[·...·truncated·by·diffoscope;·len:·612,·SHA:·80eff2e7de98b70adfa05332a91c356044fd9a1383344a80ba32cbd30b1153fc·...·]-3">)</span><span·class="p">,</span><span·class="w"> |
| 185 | ····</span><span·class="nf">create_file_slow_1</span><span·class="p"·data-group-id=" | 185 | ····</span><span·class="nf">create_file_slow_1</span><span·class="p"·data-group-id="2774303461-5">(</span><span·class="n">Fd</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">4</span><span·class="w">·</span><span·class="ow">bsl</span><span·class="w">·</span><span·class="mi">20</span><span·class="p"·data-group-id="2774[·...·truncated·by·diffoscope;·len:·6,·SHA:·04b58f7107e3d0d59620cb695173b2f39ca3715b3adbd03218c63bd5d041200a·...·]-5">)</span><span·class="p">,</span><span·class="w"> |
| 186 | ····</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id=" | 186 | ····</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id="2774303461-6">(</span><span·class="n">Fd</span><span·class="p"·data-group-id="2774303461-6">)</span><span·class="p">.</span><span·class="w"> |
| 187 | </span><span·class="nf">create_file_slow_1</span><span·class="p"·data-group-id=" | 187 | </span><span·class="nf">create_file_slow_1</span><span·class="p"·data-group-id="2774303461-7">(</span><span·class="p">_</span><span·class="n">Fd</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">0</span><span·class="p"·data-group-id="2774303461-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 188 | ····</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> | 188 | ····</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> |
| 189 | </span><span·class="nf">create_file_slow_1</span><span·class="p"·data-group-id=" | 189 | </span><span·class="nf">create_file_slow_1</span><span·class="p"·data-group-id="2774303461-8">(</span><span·class="n">Fd</span><span·class="p">,</span><span·class="w">·</span><span·class="n">M</span><span·class="p"·data-group-id="2774303461-8">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 190 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id=" | 190 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id="2774303461-9">(</span><span·class="n">Fd</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2774303461-10"><<</span><span·class="mi">0</span><span·class="p"·data-group-id="2774303461-10">>></span><span·class="p[·...·truncated·by·diffoscope;·len:·27,·SHA:·3b72555498b06861387c0c824f617396c7f90b1a666ba6cbe46a6ca66e66b21c·...·]-9">)</span><span·class="p">,</span><span·class="w"> |
| 191 | ····</span><span·class="nf">create_file_slow_1</span><span·class="p"·data-group-id=" | 191 | ····</span><span·class="nf">create_file_slow_1</span><span·class="p"·data-group-id="2774303461-11">(</span><span·class="n">Fd</span><span·class="p">,</span><span·class="w">·</span><span·class="n">M</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="27743034[·...·truncated·by·diffoscope;·len:·2,·SHA:·d029fa3a95e174a19934857f535eb9427d967218a36ea014b70ad704bc6c8d1c·...·]-11">)</span><span·class="p">.</span></code></pre><p>The·following·functionally·equivalent·code·writes·128·bytes·per·call·to |
| 192 | <a·href="#write/2"><code·class="inline">write/2</code></a>·and·so·does·the·same·work·in·0.08·seconds,·which·is·roughly·30·times | 192 | <a·href="#write/2"><code·class="inline">write/2</code></a>·and·so·does·the·same·work·in·0.08·seconds,·which·is·roughly·30·times |
| 193 | faster:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">create_file</span><span·class="p"·data-group-id="8 | 193 | faster:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">create_file</span><span·class="p"·data-group-id="2287938534-1">(</span><span·class="n">Name</span><span·class="p"·data-group-id="2287938534-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 194 | ····</span><span·class="p"·data-group-id="8 | 194 | ····</span><span·class="p"·data-group-id="2287938534-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Fd</span><span·class="p"·data-group-id="2287938534-2">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·clas[·...·truncated·by·diffoscope;·len:·612,·SHA:·c8fd63bd74ea65f3f198e734b2297d8cd0a41b5d46e4e6bbde5df724981036e1·...·]-3">)</span><span·class="p">,</span><span·class="w"> |
| 195 | ····</span><span·class="nf">create_file_1</span><span·class="p"·data-group-id="8 | 195 | ····</span><span·class="nf">create_file_1</span><span·class="p"·data-group-id="2287938534-5">(</span><span·class="n">Fd</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">4</span><span·class="w">·</span><span·class="ow">bsl</span><span·class="w">·</span><span·class="mi">20</span><span·class="p"·data-group-id="2287[·...·truncated·by·diffoscope;·len:·6,·SHA:·07704f30a27848a783dfe7293f9ddb98f08ae817adc07223dba473e6c71438c2·...·]-5">)</span><span·class="p">,</span><span·class="w"> |
| 196 | ····</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id="8 | 196 | ····</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id="2287938534-6">(</span><span·class="n">Fd</span><span·class="p"·data-group-id="2287938534-6">)</span><span·class="p">,</span><span·class="w"> |
| 197 | ····</span><span·class="ss">ok</span><span·class="p">.</span><span·class="w"> | 197 | ····</span><span·class="ss">ok</span><span·class="p">.</span><span·class="w"> |
| 198 | </span><span·class="nf">create_file_1</span><span·class="p"·data-group-id="8 | 198 | </span><span·class="nf">create_file_1</span><span·class="p"·data-group-id="2287938534-7">(</span><span·class="p">_</span><span·class="n">Fd</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">0</span><span·class="p"·data-group-id="2287938534-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 199 | ····</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> | 199 | ····</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> |
| 200 | </span><span·class="nf">create_file_1</span><span·class="p"·data-group-id="8 | 200 | </span><span·class="nf">create_file_1</span><span·class="p"·data-group-id="2287938534-8">(</span><span·class="n">Fd</span><span·class="p">,</span><span·class="w">·</span><span·class="n">M</span><span·class="p"·data-group-id="2287938534-8">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="n">M</span><span·class="w">·</span><span·class="o">>=</span><span·class="w">·</span><span·class="mi">128</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 201 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id="8 | 201 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id="2287938534-9">(</span><span·class="n">Fd</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2287938534-10"><<</span><span·class="mi">0</span><span·class="p">:</span><span·class="p"·data-group-id="2287938534-11">(</sp[·...·truncated·by·diffoscope;·len:·287,·SHA:·9db129e3a9ac88b02064841b14a190bad02019c79fe156f4dbdd065941a965e8·...·]-9">)</span><span·class="p">,</span><span·class="w"> |
| 202 | ····</span><span·class="nf">create_file_1</span><span·class="p"·data-group-id="8 | 202 | ····</span><span·class="nf">create_file_1</span><span·class="p"·data-group-id="2287938534-12">(</span><span·class="n">Fd</span><span·class="p">,</span><span·class="w">·</span><span·class="n">M</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="mi">128</span><span·class="p"·data-group-id="228793[·...·truncated·by·diffoscope;·len:·4,·SHA:·8cc579e7b007e841efe89f9483f2e41514a3abbc225c2398b27197f0f8c30d37·...·]-12">)</span><span·class="p">;</span><span·class="w"> |
| 203 | </span><span·class="nf">create_file_1</span><span·class="p"·data-group-id="8 | 203 | </span><span·class="nf">create_file_1</span><span·class="p"·data-group-id="2287938534-13">(</span><span·class="n">Fd</span><span·class="p">,</span><span·class="w">·</span><span·class="n">M</span><span·class="p"·data-group-id="2287938534-13">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 204 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id="8 | 204 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id="2287938534-14">(</span><span·class="n">Fd</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2287938534-15"><<</span><span·class="mi">0</span><span·class="p">:</span><span·class="p"·data-group-id="2287938534-16">(</s[·...·truncated·by·diffoscope;·len:·285,·SHA:·a20c57465d22867e4b1cebd49e4cd91c46b231e6493c676e6fbdddb6dff18003·...·]-14">)</span><span·class="p">,</span><span·class="w"> |
| 205 | ····</span><span·class="nf">create_file_1</span><span·class="p"·data-group-id="8 | 205 | ····</span><span·class="nf">create_file_1</span><span·class="p"·data-group-id="2287938534-17">(</span><span·class="n">Fd</span><span·class="p">,</span><span·class="w">·</span><span·class="n">M</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="22879385[·...·truncated·by·diffoscope;·len:·2,·SHA:·86e50149658661312a9e0b35558d84f6c6d3da797f552a9657fe0558ca40cdef·...·]-17">)</span><span·class="p">.</span></code></pre><p>When·writing·data·it's·generally·more·efficient·to·write·a·list·of·binaries |
| 206 | rather·than·a·list·of·integers.·It·is·not·needed·to·flatten·a·deep·list·before | 206 | rather·than·a·list·of·integers.·It·is·not·needed·to·flatten·a·deep·list·before |
| 207 | writing.·On·Unix·hosts,·scatter·output,·which·writes·a·set·of·buffers·in·one | 207 | writing.·On·Unix·hosts,·scatter·output,·which·writes·a·set·of·buffers·in·one |
| 208 | operation,·is·used·when·possible.·In·this·way | 208 | operation,·is·used·when·possible.·In·this·way |
| 209 | <a·href="#write/2"><code·class="inline">write(FD,·[Bin1,·Bin2·|·Bin3])</code></a>·writes·the·contents·of·the | 209 | <a·href="#write/2"><code·class="inline">write(FD,·[Bin1,·Bin2·|·Bin3])</code></a>·writes·the·contents·of·the |
| 210 | binaries·without·copying·the·data·at·all,·except·for·perhaps·deep·down·in·the | 210 | binaries·without·copying·the·data·at·all,·except·for·perhaps·deep·down·in·the |
| 211 | operating·system·kernel.</p><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>If·an·error·occurs·when·accessing·an·open·file·with·module·<a·href="../../../../lib/stdlib-6.2.1/doc/html/io.html"><code·class="inline">io</code></a>,·the·process | 211 | operating·system·kernel.</p><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>If·an·error·occurs·when·accessing·an·open·file·with·module·<a·href="../../../../lib/stdlib-6.2.1/doc/html/io.html"><code·class="inline">io</code></a>,·the·process |
| 212 | handling·the·file·exits.·The·dead·file·process·can·hang·if·a·process·tries·to | 212 | handling·the·file·exits.·The·dead·file·process·can·hang·if·a·process·tries·to |
| Offset 1956, 16 lines modified | Offset 1956, 16 lines modified | ||
| 1956 | ······</div> | 1956 | ······</div> |
| 1957 | <p>Reads·Erlang·terms,·separated·by·<code·class="inline">.</code>,·from·<code·class="inline">Filename</code>.·Returns·one·of·the | 1957 | <p>Reads·Erlang·terms,·separated·by·<code·class="inline">.</code>,·from·<code·class="inline">Filename</code>.·Returns·one·of·the |
| 1958 | following:</p><ul><li><p><strong><code·class="inline">{ok,·Terms}</code></strong>·-·The·file·was·successfully·read.</p></li><li><p><strong><code·class="inline">{error,·atom()}</code></strong>·-·An·error·occurred·when·opening·the·file·or·reading·it. | 1958 | following:</p><ul><li><p><strong><code·class="inline">{ok,·Terms}</code></strong>·-·The·file·was·successfully·read.</p></li><li><p><strong><code·class="inline">{error,·atom()}</code></strong>·-·An·error·occurred·when·opening·the·file·or·reading·it. |
| 1959 | For·a·list·of·typical·error·codes,·see·<a·href="#open/2"><code·class="inline">open/2</code></a>.</p></li><li><p><strong><code·class="inline">{error,·{Line,·Mod,·Term}}</code></strong>·-·An·error·occurred·when·interpreting·the | 1959 | For·a·list·of·typical·error·codes,·see·<a·href="#open/2"><code·class="inline">open/2</code></a>.</p></li><li><p><strong><code·class="inline">{error,·{Line,·Mod,·Term}}</code></strong>·-·An·error·occurred·when·interpreting·the |
| 1960 | Erlang·terms·in·the·file.·To·convert·the·three-element·tuple·to·an·English | 1960 | Erlang·terms·in·the·file.·To·convert·the·three-element·tuple·to·an·English |
| 1961 | description·of·the·error,·use·<a·href="#format_error/1"><code·class="inline">format_error/1</code></a>.</p></li></ul><p><em>Example:</em></p><pre><code·class="text">f.txt:··{person,·"kalle",·25}. | 1961 | description·of·the·error,·use·<a·href="#format_error/1"><code·class="inline">format_error/1</code></a>.</p></li></ul><p><em>Example:</em></p><pre><code·class="text">f.txt:··{person,·"kalle",·25}. |
| 1962 | ········{person,·"pelle",·30}.</code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">consult</span><span·class="p"·data-group-id=" | 1962 | ········{person,·"pelle",·30}.</code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">consult</span><span·class="p"·data-group-id="5339860796-1">(</span><span·class="s">"f.txt"</span><span·class="p"·data-group-id="5339860796-1">)</span><span·class="p">.</span><span·class="w"> |
| 1963 | </span><span·class="p"·data-group-id=" | 1963 | </span><span·class="p"·data-group-id="5339860796-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="5339860796-3">[</span><span·class="p"·data-group-id="5339860796-4">{</span><span·class="ss">person</span><span·class="p">,</span><span·class="s">"ka[·...·truncated·by·diffoscope;·len:·487,·SHA:·806c222197b1482fbc48ceeb2dbe738628324b6c80bb1a8effbe5a17363c9cf1·...·]-2">}</span></code></pre><p>The·encoding·of·<code·class="inline">Filename</code>·can·be·set·by·a·comment,·as·described·in |
| 1964 | <a·href="../../../../lib/stdlib-6.2.1/doc/html/epp.html#encoding"><code·class="inline">epp</code></a>.</p> | 1964 | <a·href="../../../../lib/stdlib-6.2.1/doc/html/epp.html#encoding"><code·class="inline">epp</code></a>.</p> |
| 1965 | ··</section> | 1965 | ··</section> |
| 1966 | </section> | 1966 | </section> |
| 1967 | <section·class="detail"·id="copy/2"> | 1967 | <section·class="detail"·id="copy/2"> |
| 1968 | ··<div·class="detail-header"> | 1968 | ··<div·class="detail-header"> |
| 1969 | ····<a·href="#copy/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1969 | ····<a·href="#copy/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 3246, 15 lines modified | Offset 3246, 15 lines modified | ||
| 3246 | ····························FileInfo·::·<a·href="#t:file_info/0">file_info</a>(), | 3246 | ····························FileInfo·::·<a·href="#t:file_info/0">file_info</a>(), |
| 3247 | ····························Reason·::·<a·href="#t:posix/0">posix</a>()·|·badarg.</pre> | 3247 | ····························Reason·::·<a·href="#t:posix/0">posix</a>()·|·badarg.</pre> |
| 3248 | ······</div> | 3248 | ······</div> |
| 3249 | <p>Retrieves·information·about·a·file.·Returns·<code·class="inline">{ok,·FileInfo}</code>·if·successful, | 3249 | <p>Retrieves·information·about·a·file.·Returns·<code·class="inline">{ok,·FileInfo}</code>·if·successful, |
| 3250 | otherwise·<code·class="inline">{error,·Reason}</code>.</p><p><code·class="inline">FileInfo</code>·is·a·record·<code·class="inline">file_info</code>,·defined·in·the·Kernel·include·file·<code·class="inline">file.hrl</code>. | 3250 | otherwise·<code·class="inline">{error,·Reason}</code>.</p><p><code·class="inline">FileInfo</code>·is·a·record·<code·class="inline">file_info</code>,·defined·in·the·Kernel·include·file·<code·class="inline">file.hrl</code>. |
| 3251 | Include·the·following·directive·in·the·module·from·which·the·function·is·called:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="1 | 3251 | Include·the·following·directive·in·the·module·from·which·the·function·is·called:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="1829170944-1">(</span><span·class="s">"kernel/include/file.hrl"</span><span·class="p"·data-group-id="1829170944-1">)</span><span·class="p">.</span></code></pre><p>The·time·type·returned·in·<code·class="inline">atime</code>,·<code·class="inline">mtime</code>,·and·<code·class="inline">ctime</code>·is·dependent·on·the·time |
| 3252 | type·set·in·<code·class="inline">Opts·::·{time,·Type}</code>·as·follows:</p><ul><li><p><strong><code·class="inline">local</code></strong>·-·Returns·local·time.</p></li><li><p><strong><code·class="inline">universal</code></strong>·-·Returns·universal·time.</p></li><li><p><strong><code·class="inline">posix</code></strong>·-·Returns·seconds·since·or·before·Unix·time·epoch,·which·is | 3252 | type·set·in·<code·class="inline">Opts·::·{time,·Type}</code>·as·follows:</p><ul><li><p><strong><code·class="inline">local</code></strong>·-·Returns·local·time.</p></li><li><p><strong><code·class="inline">universal</code></strong>·-·Returns·universal·time.</p></li><li><p><strong><code·class="inline">posix</code></strong>·-·Returns·seconds·since·or·before·Unix·time·epoch,·which·is |
| 3253 | 1970-01-01·00:00·UTC.</p></li></ul><p>Default·is·<code·class="inline">{time,·local}</code>.</p><p>If·the·option·<code·class="inline">raw</code>·is·set,·the·file·server·is·not·called·and·only·information | 3253 | 1970-01-01·00:00·UTC.</p></li></ul><p>Default·is·<code·class="inline">{time,·local}</code>.</p><p>If·the·option·<code·class="inline">raw</code>·is·set,·the·file·server·is·not·called·and·only·information |
| 3254 | about·local·files·is·returned.·Note·that·this·will·break·this·module's·atomicity | 3254 | about·local·files·is·returned.·Note·that·this·will·break·this·module's·atomicity |
| 3255 | guarantees·as·it·can·race·with·a·concurrent·call·to | 3255 | guarantees·as·it·can·race·with·a·concurrent·call·to |
| 3256 | <a·href="#write_file_info/2"><code·class="inline">write_file_info/1,2</code>·</a>.</p><p>This·option·has·no·effect·when·the·function·is·given·an·I/O·device·instead·of·a | 3256 | <a·href="#write_file_info/2"><code·class="inline">write_file_info/1,2</code>·</a>.</p><p>This·option·has·no·effect·when·the·function·is·given·an·I/O·device·instead·of·a |
| 3257 | file·name.·Use·<a·href="#open/2"><code·class="inline">open/2</code></a>·with·the·<code·class="inline">raw</code>·mode·to·obtain·a·file·descriptor·first.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>As·file·times·are·stored·in·POSIX·time·on·most·OS,·it·is·faster·to·query·file | 3257 | file·name.·Use·<a·href="#open/2"><code·class="inline">open/2</code></a>·with·the·<code·class="inline">raw</code>·mode·to·obtain·a·file·descriptor·first.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>As·file·times·are·stored·in·POSIX·time·on·most·OS,·it·is·faster·to·query·file |
| 3258 | information·with·option·<code·class="inline">posix</code>.</p></section><p>The·record·<code·class="inline">file_info</code>·contains·the·following·fields:</p><ul><li><p><strong><code·class="inline">size·=</code>·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0"><code·class="inline">non_neg_integer/0</code></a></strong>·-·Size·of·file·in·bytes.</p></li><li><p><strong><code·class="inline">type·=·device·|·directory·|·other·|·regular</code></strong>·-·The·type·of·the·file.·Can | 3258 | information·with·option·<code·class="inline">posix</code>.</p></section><p>The·record·<code·class="inline">file_info</code>·contains·the·following·fields:</p><ul><li><p><strong><code·class="inline">size·=</code>·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0"><code·class="inline">non_neg_integer/0</code></a></strong>·-·Size·of·file·in·bytes.</p></li><li><p><strong><code·class="inline">type·=·device·|·directory·|·other·|·regular</code></strong>·-·The·type·of·the·file.·Can |
| Offset 3900, 15 lines modified | Offset 3900, 15 lines modified | ||
| 3900 | ·····························Reason·::·<a·href="#t:posix/0">posix</a>()·|·badarg.</pre> | 3900 | ·····························Reason·::·<a·href="#t:posix/0">posix</a>()·|·badarg.</pre> |
| 3901 | ······</div> | 3901 | ······</div> |
| 3902 | <p>Changes·file·information.·Returns·<code·class="inline">ok</code>·if·successful,·otherwise | 3902 | <p>Changes·file·information.·Returns·<code·class="inline">ok</code>·if·successful,·otherwise |
| 3903 | <code·class="inline">{error,·Reason}</code>.</p><p><code·class="inline">FileInfo</code>·is·a·record·<code·class="inline">file_info</code>,·defined·in·the·Kernel | 3903 | <code·class="inline">{error,·Reason}</code>.</p><p><code·class="inline">FileInfo</code>·is·a·record·<code·class="inline">file_info</code>,·defined·in·the·Kernel |
| 3904 | include·file·<code·class="inline">file.hrl</code>.·Include·the·following·directive·in·the·module·from | 3904 | include·file·<code·class="inline">file.hrl</code>.·Include·the·following·directive·in·the·module·from |
| 3905 | which·the·function·is·called:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id=" | 3905 | which·the·function·is·called:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="7736494994-1">(</span><span·class="s">"kernel/include/file.hrl"</span><span·class="p"·data-group-id="7736494994-1">)</span><span·class="p">.</span></code></pre><p>The·time·type·set·in·<code·class="inline">atime</code>,·<code·class="inline">mtime</code>,·and·<code·class="inline">ctime</code>·depends·on·the·time·type·set |
| 3906 | in·<code·class="inline">Opts·::·{time,·Type}</code>·as·follows:</p><ul><li><p><strong><code·class="inline">local</code></strong>·-·Interprets·the·time·set·as·local.</p></li><li><p><strong><code·class="inline">universal</code></strong>·-·Interprets·it·as·universal·time.</p></li><li><p><strong><code·class="inline">posix</code></strong>·-·Must·be·seconds·since·or·before·Unix·time·epoch,·which·is | 3906 | in·<code·class="inline">Opts·::·{time,·Type}</code>·as·follows:</p><ul><li><p><strong><code·class="inline">local</code></strong>·-·Interprets·the·time·set·as·local.</p></li><li><p><strong><code·class="inline">universal</code></strong>·-·Interprets·it·as·universal·time.</p></li><li><p><strong><code·class="inline">posix</code></strong>·-·Must·be·seconds·since·or·before·Unix·time·epoch,·which·is |
| 3907 | 1970-01-01·00:00·UTC.</p></li></ul><p>Default·is·<code·class="inline">{time,·local}</code>.</p><p>If·the·option·<code·class="inline">raw</code>·is·set,·the·file·server·is·not·called·and·only·information | 3907 | 1970-01-01·00:00·UTC.</p></li></ul><p>Default·is·<code·class="inline">{time,·local}</code>.</p><p>If·the·option·<code·class="inline">raw</code>·is·set,·the·file·server·is·not·called·and·only·information |
| 3908 | about·local·files·is·returned.</p><p>The·following·fields·are·used·from·the·record,·if·they·are·specified:</p><ul><li><p><strong><code·class="inline">atime·=</code>·<a·href="#t:date_time/0"><code·class="inline">date_time/0</code></a>·<code·class="inline">|</code>·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0"><code·class="inline">non_neg_integer/0</code></a></strong>·-·The·last·time·the·file·was | 3908 | about·local·files·is·returned.</p><p>The·following·fields·are·used·from·the·record,·if·they·are·specified:</p><ul><li><p><strong><code·class="inline">atime·=</code>·<a·href="#t:date_time/0"><code·class="inline">date_time/0</code></a>·<code·class="inline">|</code>·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0"><code·class="inline">non_neg_integer/0</code></a></strong>·-·The·last·time·the·file·was |
| 3909 | read.</p></li><li><p><strong><code·class="inline">mtime·=</code>·<a·href="#t:date_time/0"><code·class="inline">date_time/0</code></a>·<code·class="inline">|</code>·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0"><code·class="inline">non_neg_integer/0</code></a></strong>·-·The·last·time·the·file·was | 3909 | read.</p></li><li><p><strong><code·class="inline">mtime·=</code>·<a·href="#t:date_time/0"><code·class="inline">date_time/0</code></a>·<code·class="inline">|</code>·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0"><code·class="inline">non_neg_integer/0</code></a></strong>·-·The·last·time·the·file·was |
| 3910 | written.</p></li><li><p><strong><code·class="inline">ctime·=</code>·<a·href="#t:date_time/0"><code·class="inline">date_time/0</code></a>·<code·class="inline">|</code>·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0"><code·class="inline">non_neg_integer/0</code></a></strong>·-·On·Unix,·any·value | 3910 | written.</p></li><li><p><strong><code·class="inline">ctime·=</code>·<a·href="#t:date_time/0"><code·class="inline">date_time/0</code></a>·<code·class="inline">|</code>·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0"><code·class="inline">non_neg_integer/0</code></a></strong>·-·On·Unix,·any·value |
| 3911 | specified·for·this·field·is·ignored·(the·"ctime"·for·the·file·is·set·to·the | 3911 | specified·for·this·field·is·ignored·(the·"ctime"·for·the·file·is·set·to·the |
| 3912 | current·time).·On·Windows,·this·field·is·the·new·creation·time·to·set·for·the | 3912 | current·time).·On·Windows,·this·field·is·the·new·creation·time·to·set·for·the |
| Offset 132, 15 lines modified | Offset 132, 15 lines modified | ||
| 132 | The·implementation·assumes·that·the·OS·kernel·supports·SCTP | 132 | The·implementation·assumes·that·the·OS·kernel·supports·SCTP |
| 133 | <a·href="http://www.rfc-archive.org/getrfc.php?rfc=2960">(RFC·2960)</a> | 133 | <a·href="http://www.rfc-archive.org/getrfc.php?rfc=2960">(RFC·2960)</a> |
| 134 | through·the·user-level | 134 | through·the·user-level |
| 135 | <a·href="http://tools.ietf.org/html/draft-ietf-tsvwg-sctpsocket-13">Sockets·API·Extensions</a>.</p><p>During·development,·this·implementation·was·tested·on:</p><ul><li>Linux·Fedora·Core·5.0·(kernel·2.6.15-2054·or·later·is·needed)</li><li>Solaris·10,·11</li></ul><p>During·OTP·adaptation·it·was·tested·on:</p><ul><li>SUSE·Linux·Enterprise·Server·10·(x86_64)·kernel·2.6.16.27-0.6-smp,·with | 135 | <a·href="http://tools.ietf.org/html/draft-ietf-tsvwg-sctpsocket-13">Sockets·API·Extensions</a>.</p><p>During·development,·this·implementation·was·tested·on:</p><ul><li>Linux·Fedora·Core·5.0·(kernel·2.6.15-2054·or·later·is·needed)</li><li>Solaris·10,·11</li></ul><p>During·OTP·adaptation·it·was·tested·on:</p><ul><li>SUSE·Linux·Enterprise·Server·10·(x86_64)·kernel·2.6.16.27-0.6-smp,·with |
| 136 | lksctp-tools-1.0.6</li><li>Briefly·on·Solaris·10</li><li>SUSE·Linux·Enterprise·Server·10·Service·Pack·1·(x86_64)·kernel | 136 | lksctp-tools-1.0.6</li><li>Briefly·on·Solaris·10</li><li>SUSE·Linux·Enterprise·Server·10·Service·Pack·1·(x86_64)·kernel |
| 137 | 2.6.16.54-0.2.3-smp·with·lksctp-tools-1.0.7</li><li>FreeBSD·8.2</li></ul><p>This·module·was·written·for·one-to-many·style·sockets·(type·<code·class="inline">seqpacket</code>). | 137 | 2.6.16.54-0.2.3-smp·with·lksctp-tools-1.0.7</li><li>FreeBSD·8.2</li></ul><p>This·module·was·written·for·one-to-many·style·sockets·(type·<code·class="inline">seqpacket</code>). |
| 138 | With·the·addition·of·<a·href="#peeloff/2"><code·class="inline">peeloff/2</code></a>,·one-to-one·style·sockets·(type·<code·class="inline">stream</code>) | 138 | With·the·addition·of·<a·href="#peeloff/2"><code·class="inline">peeloff/2</code></a>,·one-to-one·style·sockets·(type·<code·class="inline">stream</code>) |
| 139 | were·introduced.</p><p>Record·definitions·for·this·module·can·be·found·using:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="6 | 139 | were·introduced.</p><p>Record·definitions·for·this·module·can·be·found·using:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="6645202353-1">(</span><span·class="s">"kernel/include/inet_sctp.hrl"</span><span·class="p"·data-group-id="6645202353-1">)</span><span·class="p">.</span></code></pre><p>These·record·definitions·use·the·"new"·spelling·'adaptation', |
| 140 | not·the·deprecated·'adaption',·regardless·of·which·spelling | 140 | not·the·deprecated·'adaption',·regardless·of·which·spelling |
| 141 | the·underlying·C·API·uses.</p><h2·id="module-sctp-socket-options"·class="section-heading"> | 141 | the·underlying·C·API·uses.</p><h2·id="module-sctp-socket-options"·class="section-heading"> |
| 142 | ··<a·href="#module-sctp-socket-options"·class="hover-link"> | 142 | ··<a·href="#module-sctp-socket-options"·class="hover-link"> |
| 143 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 143 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 144 | ··</a> | 144 | ··</a> |
| 145 | ··<span·class="text"><a·href=""·id="options"></a>·SCTP·Socket·Options</span> | 145 | ··<span·class="text"><a·href=""·id="options"></a>·SCTP·Socket·Options</span> |
| 146 | </h2> | 146 | </h2> |
| Offset 180, 39 lines modified | Offset 180, 39 lines modified | ||
| 180 | the·driver·buffer·(see·<code·class="inline">buffer</code>·above).</p></li><li><p><strong><code·class="inline">{recbuf, integer()}</code></strong>·-·The·size,·in·bytes,·of·the·OS·kernel·receive | 180 | the·driver·buffer·(see·<code·class="inline">buffer</code>·above).</p></li><li><p><strong><code·class="inline">{recbuf, integer()}</code></strong>·-·The·size,·in·bytes,·of·the·OS·kernel·receive |
| 181 | buffer·for·this·socket.·Sending·errors·would·occur·for·datagrams | 181 | buffer·for·this·socket.·Sending·errors·would·occur·for·datagrams |
| 182 | larger·than·<code·class="inline">val(recbuf)</code>.·Setting·this·option·also·adjusts·the·size | 182 | larger·than·<code·class="inline">val(recbuf)</code>.·Setting·this·option·also·adjusts·the·size |
| 183 | of·the·driver·buffer·(see·<code·class="inline">buffer</code>·above).</p></li></ul><h3·id="option_non_block_send"><a·href=""></a></h3><ul><li><p><strong><code·class="inline">{non_block_send, boolean()}</code></strong>·-·A·send·call·that·would·otherwise·block·(hang), | 183 | of·the·driver·buffer·(see·<code·class="inline">buffer</code>·above).</p></li></ul><h3·id="option_non_block_send"><a·href=""></a></h3><ul><li><p><strong><code·class="inline">{non_block_send, boolean()}</code></strong>·-·A·send·call·that·would·otherwise·block·(hang), |
| 184 | will·instead·immediately·return·with·e.g.·<code·class="inline">{error,·eagain}</code> | 184 | will·instead·immediately·return·with·e.g.·<code·class="inline">{error,·eagain}</code> |
| 185 | <em>if</em>·this·option·has·been·set·to·<code·class="inline">true</code>. | 185 | <em>if</em>·this·option·has·been·set·to·<code·class="inline">true</code>. |
| 186 | Defaults·to·<code·class="inline">false</code>.</p></li><li><p><strong><code·class="inline">{sctp_module, module()}</code></strong>·-·Overrides·which·callback·module·is·used. | 186 | Defaults·to·<code·class="inline">false</code>.</p></li><li><p><strong><code·class="inline">{sctp_module, module()}</code></strong>·-·Overrides·which·callback·module·is·used. |
| 187 | Defaults·to·<code·class="inline">inet_sctp</code>·for·IPv4·and·<code·class="inline">inet6_sctp</code>·for·IPv6.</p></li><li><p><strong><code·class="inline">{sctp_rtoinfo, #sctp_rtoinfo{}}</code></strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">#</span><span·class="ss">sctp_rtoinfo</span><span·class="p"·data-group-id=" | 187 | Defaults·to·<code·class="inline">inet_sctp</code>·for·IPv4·and·<code·class="inline">inet6_sctp</code>·for·IPv6.</p></li><li><p><strong><code·class="inline">{sctp_rtoinfo, #sctp_rtoinfo{}}</code></strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">#</span><span·class="ss">sctp_rtoinfo</span><span·class="p"·data-group-id="1781116960-1">{</span><span·class="w"> |
| 188 | ······</span><span·class="ss">assoc_id</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">assoc_id</span><span·class="p"·data-group-id=" | 188 | ······</span><span·class="ss">assoc_id</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">assoc_id</span><span·class="p"·data-group-id="1781116960-2">(</span><span·class="p"·data-group-id="1781116960-2">)</span><span·class="p">,</span><span·class="w"> |
| 189 | ······</span><span·class="ss">initial</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id=" | 189 | ······</span><span·class="ss">initial</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="1781116960-3">(</span><span·class="p"·data-group-id="1781116960-3">)</span><span·class="p">,</span><span·class="w"> |
| 190 | ······</span><span·class="ss">max</span><span·class="w">······</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id=" | 190 | ······</span><span·class="ss">max</span><span·class="w">······</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="1781116960-4">(</span><span·class="p"·data-group-id="1781116960-4">)</span><span·class="p">,</span><span·class="w"> |
| 191 | ······</span><span·class="ss">min</span><span·class="w">······</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id=" | 191 | ······</span><span·class="ss">min</span><span·class="w">······</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="1781116960-5">(</span><span·class="p"·data-group-id="1781116960-5">)</span><span·class="w"> |
| 192 | </span><span·class="p"·data-group-id=" | 192 | </span><span·class="p"·data-group-id="1781116960-1">}</span></code></pre><p>Determines·retransmission·time-out·parameters,·in·milliseconds,·for·the |
| 193 | association(s)·specified·by·<code·class="inline">assoc_id</code>.</p><p><code·class="inline">assoc_id = 0</code>·(default)·indicates·the·whole·endpoint.·See | 193 | association(s)·specified·by·<code·class="inline">assoc_id</code>.</p><p><code·class="inline">assoc_id = 0</code>·(default)·indicates·the·whole·endpoint.·See |
| 194 | <a·href="http://www.rfc-archive.org/getrfc.php?rfc=2960">RFC·2960</a>·and | 194 | <a·href="http://www.rfc-archive.org/getrfc.php?rfc=2960">RFC·2960</a>·and |
| 195 | <a·href="http://tools.ietf.org/html/draft-ietf-tsvwg-sctpsocket-13">Sockets·API·Extensions·for·SCTP</a> | 195 | <a·href="http://tools.ietf.org/html/draft-ietf-tsvwg-sctpsocket-13">Sockets·API·Extensions·for·SCTP</a> |
| 196 | for·the·exact·semantics·of·the·field·values.</p></li><li><p><strong><code·class="inline">{sctp_associnfo, #sctp_assocparams{}}</code></strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">#</span><span·class="ss">sctp_assocparams</span><span·class="p"·data-group-id=" | 196 | for·the·exact·semantics·of·the·field·values.</p></li><li><p><strong><code·class="inline">{sctp_associnfo, #sctp_assocparams{}}</code></strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">#</span><span·class="ss">sctp_assocparams</span><span·class="p"·data-group-id="9252295376-1">{</span><span·class="w"> |
| 197 | ······</span><span·class="ss">assoc_id</span><span·class="w">·················</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">assoc_id</span><span·class="p"·data-group-id=" | 197 | ······</span><span·class="ss">assoc_id</span><span·class="w">·················</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">assoc_id</span><span·class="p"·data-group-id="9252295376-2">(</span><span·class="p"·data-group-id="9252295376-2">)</span><span·class="p">,</span><span·class="w"> |
| 198 | ······</span><span·class="ss">asocmaxrxt</span><span·class="w">···············</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id=" | 198 | ······</span><span·class="ss">asocmaxrxt</span><span·class="w">···············</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="9252295376-3">(</span><span·class="p"·data-group-id="9252295376-3">)</span><span·class="p">,</span><span·class="w"> |
| 199 | ······</span><span·class="ss">number_peer_destinations</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id=" | 199 | ······</span><span·class="ss">number_peer_destinations</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="9252295376-4">(</span><span·class="p"·data-group-id="9252295376-4">)</span><span·class="p">,</span><span·class="w"> |
| 200 | ······</span><span·class="ss">peer_rwnd</span><span·class="w">················</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id=" | 200 | ······</span><span·class="ss">peer_rwnd</span><span·class="w">················</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="9252295376-5">(</span><span·class="p"·data-group-id="9252295376-5">)</span><span·class="p">,</span><span·class="w"> |
| 201 | ······</span><span·class="ss">local_rwnd</span><span·class="w">···············</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id=" | 201 | ······</span><span·class="ss">local_rwnd</span><span·class="w">···············</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="9252295376-6">(</span><span·class="p"·data-group-id="9252295376-6">)</span><span·class="p">,</span><span·class="w"> |
| 202 | ······</span><span·class="ss">cookie_life</span><span·class="w">··············</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id=" | 202 | ······</span><span·class="ss">cookie_life</span><span·class="w">··············</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="9252295376-7">(</span><span·class="p"·data-group-id="9252295376-7">)</span><span·class="w"> |
| 203 | </span><span·class="p"·data-group-id=" | 203 | </span><span·class="p"·data-group-id="9252295376-1">}</span></code></pre><p>Determines·association·parameters·for·the·association(s)·specified·by |
| 204 | <code·class="inline">assoc_id</code>.</p><p><code·class="inline">assoc_id = 0</code>·(default)·indicates·the·whole·endpoint.·See | 204 | <code·class="inline">assoc_id</code>.</p><p><code·class="inline">assoc_id = 0</code>·(default)·indicates·the·whole·endpoint.·See |
| 205 | <a·href="http://tools.ietf.org/html/draft-ietf-tsvwg-sctpsocket-13">Sockets·API·Extensions·for·SCTP</a> | 205 | <a·href="http://tools.ietf.org/html/draft-ietf-tsvwg-sctpsocket-13">Sockets·API·Extensions·for·SCTP</a> |
| 206 | for·the·discussion·of·their·semantics.·Rarely·used.</p></li><li><p><strong><code·class="inline">{sctp_initmsg, #sctp_initmsg{}}</code></strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">#</span><span·class="ss">sctp_initmsg</span><span·class="p"·data-group-id="7 | 206 | for·the·discussion·of·their·semantics.·Rarely·used.</p></li><li><p><strong><code·class="inline">{sctp_initmsg, #sctp_initmsg{}}</code></strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">#</span><span·class="ss">sctp_initmsg</span><span·class="p"·data-group-id="7827133008-1">{</span><span·class="w"> |
| 207 | ·····</span><span·class="ss">num_ostreams</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="7 | 207 | ·····</span><span·class="ss">num_ostreams</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="7827133008-2">(</span><span·class="p"·data-group-id="7827133008-2">)</span><span·class="p">,</span><span·class="w"> |
| 208 | ·····</span><span·class="ss">max_instreams</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="7 | 208 | ·····</span><span·class="ss">max_instreams</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="7827133008-3">(</span><span·class="p"·data-group-id="7827133008-3">)</span><span·class="p">,</span><span·class="w"> |
| 209 | ·····</span><span·class="ss">max_attempts</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="7 | 209 | ·····</span><span·class="ss">max_attempts</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="7827133008-4">(</span><span·class="p"·data-group-id="7827133008-4">)</span><span·class="p">,</span><span·class="w"> |
| 210 | ·····</span><span·class="ss">max_init_timeo</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="7 | 210 | ·····</span><span·class="ss">max_init_timeo</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="7827133008-5">(</span><span·class="p"·data-group-id="7827133008-5">)</span><span·class="w"> |
| 211 | </span><span·class="p"·data-group-id="7 | 211 | </span><span·class="p"·data-group-id="7827133008-1">}</span></code></pre><p>Determines·the·default·parameters·that·this·socket·tries·to·negotiate |
| 212 | with·its·peer·while·establishing·an·association·with·it.·Is·to·be·set·after | 212 | with·its·peer·while·establishing·an·association·with·it.·Is·to·be·set·after |
| 213 | <a·href="#open/1"><code·class="inline">open/*</code></a>·but·before·the·first·<a·href="#connect/4"><code·class="inline">connect/*</code></a>. | 213 | <a·href="#open/1"><code·class="inline">open/*</code></a>·but·before·the·first·<a·href="#connect/4"><code·class="inline">connect/*</code></a>. |
| 214 | <code·class="inline">#sctp_initmsg{}</code>·can·also·be·used·as·ancillary·data·with·the·first·call·of | 214 | <code·class="inline">#sctp_initmsg{}</code>·can·also·be·used·as·ancillary·data·with·the·first·call·of |
| 215 | <a·href="#send/3"><code·class="inline">send/*</code></a>·to·a·new·peer·(when·a·new·association·is·created).</p><ul><li><p><strong><code·class="inline">num_ostreams</code></strong>·-·Number·of·outbound·streams</p></li><li><p><strong><code·class="inline">max_instreams</code></strong>·-·Maximum·number·of·inbound·streams</p></li><li><p><strong><code·class="inline">max_attempts</code></strong>·-·Maximum·retransmissions·while·establishing·an | 215 | <a·href="#send/3"><code·class="inline">send/*</code></a>·to·a·new·peer·(when·a·new·association·is·created).</p><ul><li><p><strong><code·class="inline">num_ostreams</code></strong>·-·Number·of·outbound·streams</p></li><li><p><strong><code·class="inline">max_instreams</code></strong>·-·Maximum·number·of·inbound·streams</p></li><li><p><strong><code·class="inline">max_attempts</code></strong>·-·Maximum·retransmissions·while·establishing·an |
| 216 | association</p></li><li><p><strong><code·class="inline">max_init_timeo</code></strong>·-·Time-out,·in·milliseconds,·for·establishing·an | 216 | association</p></li><li><p><strong><code·class="inline">max_init_timeo</code></strong>·-·Time-out,·in·milliseconds,·for·establishing·an |
| 217 | association</p></li></ul></li><li><p><strong><code·class="inline">{sctp_autoclose, integer()·>=·0}</code></strong>·-·Determines·the·time,·in·seconds, | 217 | association</p></li></ul></li><li><p><strong><code·class="inline">{sctp_autoclose, integer()·>=·0}</code></strong>·-·Determines·the·time,·in·seconds, |
| 218 | after·which·an·idle·association·is·automatically·closed.·<code·class="inline">0</code>·means·that·the | 218 | after·which·an·idle·association·is·automatically·closed.·<code·class="inline">0</code>·means·that·the |
| Offset 221, 239 lines modified | Offset 221, 239 lines modified | ||
| 221 | expense·of·latency.</p></li><li><p><strong><code·class="inline">{sctp_disable_fragments,·true|false}</code></strong>·-·If·<code·class="inline">true</code>,·induces·an·error·on·an | 221 | expense·of·latency.</p></li><li><p><strong><code·class="inline">{sctp_disable_fragments,·true|false}</code></strong>·-·If·<code·class="inline">true</code>,·induces·an·error·on·an |
| 222 | attempt·to·send·a·message·larger·than·the·current·PMTU·size·(which·would | 222 | attempt·to·send·a·message·larger·than·the·current·PMTU·size·(which·would |
| 223 | require·fragmentation/reassembling).·Notice·that·message·fragmentation·does | 223 | require·fragmentation/reassembling).·Notice·that·message·fragmentation·does |
| 224 | not·affect·the·logical·atomicity·of·its·delivery;·this·option·is·provided·for | 224 | not·affect·the·logical·atomicity·of·its·delivery;·this·option·is·provided·for |
| 225 | performance·reasons·only.</p></li><li><p><strong><code·class="inline">{sctp_i_want_mapped_v4_addr, true|false}</code></strong>·-·Turns·on|off·automatic | 225 | performance·reasons·only.</p></li><li><p><strong><code·class="inline">{sctp_i_want_mapped_v4_addr, true|false}</code></strong>·-·Turns·on|off·automatic |
| 226 | mapping·of·IPv4·addresses·into·IPv6·ones·(if·the·socket·address·family·is | 226 | mapping·of·IPv4·addresses·into·IPv6·ones·(if·the·socket·address·family·is |
| 227 | <code·class="inline">AF_INET6</code>).</p></li><li><p><strong><code·class="inline">{sctp_maxseg, integer()}</code></strong>·-·Determines·the·maximum·chunk·size·if·message | 227 | <code·class="inline">AF_INET6</code>).</p></li><li><p><strong><code·class="inline">{sctp_maxseg, integer()}</code></strong>·-·Determines·the·maximum·chunk·size·if·message |
| 228 | fragmentation·is·used.·If·<code·class="inline">0</code>,·the·chunk·size·is·limited·by·the·Path·MTU·only.</p></li><li><p><strong><code·class="inline">{sctp_primary_addr, #sctp_prim{}}</code></strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">#</span><span·class="ss">sctp_prim</span><span·class="p"·data-group-id=" | 228 | fragmentation·is·used.·If·<code·class="inline">0</code>,·the·chunk·size·is·limited·by·the·Path·MTU·only.</p></li><li><p><strong><code·class="inline">{sctp_primary_addr, #sctp_prim{}}</code></strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">#</span><span·class="ss">sctp_prim</span><span·class="p"·data-group-id="0438627096-1">{</span><span·class="w"> |
| 229 | ······</span><span·class="ss">assoc_id</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">assoc_id</span><span·class="p"·data-group-id=" | 229 | ······</span><span·class="ss">assoc_id</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">assoc_id</span><span·class="p"·data-group-id="0438627096-2">(</span><span·class="p"·data-group-id="0438627096-2">)</span><span·class="p">,</span><span·class="w"> |
| 230 | ······</span><span·class="ss">addr</span><span·class="w">·····</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 230 | ······</span><span·class="ss">addr</span><span·class="w">·····</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="0438627096-3">{</span><span·class="n">IP</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Port</span><span·class="p"·data-group-id="0438627096-3">}</span><span·class="w"> |
| 231 | </span><span·class="p"·data-group-id=" | 231 | </span><span·class="p"·data-group-id="0438627096-1">}</span><span·class="w"> |
| 232 | ·</span><span·class="n">IP</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">ip_address</span><span·class="p"·data-group-id=" | 232 | ·</span><span·class="n">IP</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">ip_address</span><span·class="p"·data-group-id="0438627096-4">(</span><span·class="p"·data-group-id="0438627096-4">)</span><span·class="w"> |
| 233 | ·</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">port_number</span><span·class="p"·data-group-id=" | 233 | ·</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">port_number</span><span·class="p"·data-group-id="0438627096-5">(</span><span·class="p"·data-group-id="0438627096-5">)</span></code></pre><p>For·the·association·specified·by·<code·class="inline">assoc_id</code>,·<code·class="inline">{IP,Port}</code>·must·be·one·of·the |
| 234 | peer·addresses.·This·option·determines·that·the·specified·address·is·treated | 234 | peer·addresses.·This·option·determines·that·the·specified·address·is·treated |
| 235 | by·the·local·SCTP·stack·as·the·primary·address·of·the·peer.</p></li><li><p><strong><code·class="inline">{sctp_set_peer_primary_addr, #sctp_setpeerprim{}}</code></strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">#</span><span·class="ss">sctp_setpeerprim</span><span·class="p"·data-group-id=" | 235 | by·the·local·SCTP·stack·as·the·primary·address·of·the·peer.</p></li><li><p><strong><code·class="inline">{sctp_set_peer_primary_addr, #sctp_setpeerprim{}}</code></strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">#</span><span·class="ss">sctp_setpeerprim</span><span·class="p"·data-group-id="2819950247-1">{</span><span·class="w"> |
| 236 | ······</span><span·class="ss">assoc_id</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">assoc_id</span><span·class="p"·data-group-id=" | 236 | ······</span><span·class="ss">assoc_id</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">assoc_id</span><span·class="p"·data-group-id="2819950247-2">(</span><span·class="p"·data-group-id="2819950247-2">)</span><span·class="p">,</span><span·class="w"> |
| 237 | ······</span><span·class="ss">addr</span><span·class="w">·····</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 237 | ······</span><span·class="ss">addr</span><span·class="w">·····</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2819950247-3">{</span><span·class="n">IP</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Port</span><span·class="p"·data-group-id="2819950247-3">}</span><span·class="w"> |
| 238 | </span><span·class="p"·data-group-id=" | 238 | </span><span·class="p"·data-group-id="2819950247-1">}</span><span·class="w"> |
| 239 | ·</span><span·class="n">IP</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">ip_address</span><span·class="p"·data-group-id=" | 239 | ·</span><span·class="n">IP</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">ip_address</span><span·class="p"·data-group-id="2819950247-4">(</span><span·class="p"·data-group-id="2819950247-4">)</span><span·class="w"> |
| 240 | ·</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">port_number</span><span·class="p"·data-group-id=" | 240 | ·</span><span·class="n">Port</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">port_number</span><span·class="p"·data-group-id="2819950247-5">(</span><span·class="p"·data-group-id="2819950247-5">)</span></code></pre><p>When·set,·informs·the·peer·to·use·<code·class="inline">{IP, Port}</code>·as·the·primary·address·of·the |
| 241 | local·endpoint·for·the·association·specified·by·<code·class="inline">assoc_id</code>.</p></li><li><p><strong><code·class="inline">{sctp_adaptation_layer, #sctp_setadaptation{}}</code></strong>·<a·href=""·id="option-sctp_adaptation_layer"></a></p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">#</span><span·class="ss">sctp_setadaptation</span><span·class="p"·data-group-id=" | 241 | local·endpoint·for·the·association·specified·by·<code·class="inline">assoc_id</code>.</p></li><li><p><strong><code·class="inline">{sctp_adaptation_layer, #sctp_setadaptation{}}</code></strong>·<a·href=""·id="option-sctp_adaptation_layer"></a></p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">#</span><span·class="ss">sctp_setadaptation</span><span·class="p"·data-group-id="7963560491-1">{</span><span·class="w"> |
| 242 | ······</span><span·class="ss">adaptation_ind</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id=" | 242 | ······</span><span·class="ss">adaptation_ind</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="7963560491-2">(</span><span·class="p"·data-group-id="7963560491-2">)</span><span·class="w"> |
| 243 | </span><span·class="p"·data-group-id=" | 243 | </span><span·class="p"·data-group-id="7963560491-1">}</span></code></pre><p>When·set,·requests·that·the·local·endpoint·uses·the·value·specified·by |
| 244 | <code·class="inline">adaptation_ind</code>·as·the·Adaptation·Indication·parameter·for·establishing | 244 | <code·class="inline">adaptation_ind</code>·as·the·Adaptation·Indication·parameter·for·establishing |
| 245 | new·associations.·For·details,·see | 245 | new·associations.·For·details,·see |
| 246 | <a·href="http://www.rfc-archive.org/getrfc.php?rfc=2960">RFC·2960</a>·and | 246 | <a·href="http://www.rfc-archive.org/getrfc.php?rfc=2960">RFC·2960</a>·and |
| 247 | <a·href="http://tools.ietf.org/html/draft-ietf-tsvwg-sctpsocket-13">Sockets·API·Extensions·for·SCTP</a>.</p></li><li><p><strong><code·class="inline">{sctp_peer_addr_params, #sctp_paddrparams{}}</code></strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">#</span><span·class="ss">sctp_paddrparams</span><span·class="p"·data-group-id="2 | 247 | <a·href="http://tools.ietf.org/html/draft-ietf-tsvwg-sctpsocket-13">Sockets·API·Extensions·for·SCTP</a>.</p></li><li><p><strong><code·class="inline">{sctp_peer_addr_params, #sctp_paddrparams{}}</code></strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">#</span><span·class="ss">sctp_paddrparams</span><span·class="p"·data-group-id="2990328329-1">{</span><span·class="w"> |
| 248 | ······</span><span·class="ss">assoc_id</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">assoc_id</span><span·class="p"·data-group-id="2 | 248 | ······</span><span·class="ss">assoc_id</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">assoc_id</span><span·class="p"·data-group-id="2990328329-2">(</span><span·class="p"·data-group-id="2990328329-2">)</span><span·class="p">,</span><span·class="w"> |
| 249 | ······</span><span·class="ss">address</span><span·class="w">····</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2 | 249 | ······</span><span·class="ss">address</span><span·class="w">····</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2990328329-3">{</span><span·class="n">IP</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Port</span><span·class="p"·data-group-id="2990328329-3">}</span><span·class="p">,</span><span·class="w"> |
| 250 | ······</span><span·class="ss">hbinterval</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="2 | 250 | ······</span><span·class="ss">hbinterval</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="2990328329-4">(</span><span·class="p"·data-group-id="2990328329-4">)</span><span·class="p">,</span><span·class="w"> |
| 251 | ······</span><span·class="ss">pathmaxrxt</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="2 | 251 | ······</span><span·class="ss">pathmaxrxt</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="2990328329-5">(</span><span·class="p"·data-group-id="2990328329-5">)</span><span·class="p">,</span><span·class="w"> |
| 252 | ······</span><span·class="ss">pathmtu</span><span·class="w">····</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="2 | 252 | ······</span><span·class="ss">pathmtu</span><span·class="w">····</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="2990328329-6">(</span><span·class="p"·data-group-id="2990328329-6">)</span><span·class="p">,</span><span·class="w"> |
| 253 | ······</span><span·class="ss">sackdelay</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="2 | 253 | ······</span><span·class="ss">sackdelay</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="2990328329-7">(</span><span·class="p"·data-group-id="2990328329-7">)</span><span·class="p">,</span><span·class="w"> |
| 254 | ······</span><span·class="ss">flags</span><span·class="w">······</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">list</span><span·class="p"·data-group-id="2 | 254 | ······</span><span·class="ss">flags</span><span·class="w">······</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">list</span><span·class="p"·data-group-id="2990328329-8">(</span><span·class="p"·data-group-id="2990328329-8">)</span><span·class="w"> |
| 255 | </span><span·class="p"·data-group-id="2 | 255 | </span><span·class="p"·data-group-id="2990328329-1">}</span><span·class="w"> |
| 256 | </span><span·class="n">IP</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">ip_address</span><span·class="p"·data-group-id="2 | 256 | </span><span·class="n">IP</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">ip_address</span><span·class="p"·data-group-id="2990328329-9">(</span><span·class="p"·data-group-id="2990328329-9">)</span><span·class="w"> |
| 257 | </span><span·class="n">Port</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">port_number</span><span·class="p"·data-group-id="2 | 257 | </span><span·class="n">Port</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">port_number</span><span·class="p"·data-group-id="2990328329-10">(</span><span·class="p"·data-group-id="2990328329-10">)</span></code></pre><p>Determines·various·per-address·parameters·for·the·association·specified·by |
| 258 | <code·class="inline">assoc_id</code>·and·the·peer·address·<code·class="inline">address</code>·(the·SCTP·protocol·supports | 258 | <code·class="inline">assoc_id</code>·and·the·peer·address·<code·class="inline">address</code>·(the·SCTP·protocol·supports |
| 259 | multi-homing,·so·more·than·one·address·can·correspond·to·a·specified | 259 | multi-homing,·so·more·than·one·address·can·correspond·to·a·specified |
| 260 | association).</p><ul><li><p><strong><code·class="inline">hbinterval</code></strong>·-·Heartbeat·interval,·in·milliseconds</p></li><li><p><strong><code·class="inline">pathmaxrxt</code></strong>·-·Maximum·number·of·retransmissions·before·this·address·is | 260 | association).</p><ul><li><p><strong><code·class="inline">hbinterval</code></strong>·-·Heartbeat·interval,·in·milliseconds</p></li><li><p><strong><code·class="inline">pathmaxrxt</code></strong>·-·Maximum·number·of·retransmissions·before·this·address·is |
| 261 | considered·unreachable·(and·an·alternative·address·is·selected)</p></li><li><p><strong><code·class="inline">pathmtu</code></strong>·-·Fixed·Path·MTU,·if·automatic·discovery·is·disabled·(see | 261 | considered·unreachable·(and·an·alternative·address·is·selected)</p></li><li><p><strong><code·class="inline">pathmtu</code></strong>·-·Fixed·Path·MTU,·if·automatic·discovery·is·disabled·(see |
| 262 | <code·class="inline">flags</code>·below)</p></li><li><p><strong><code·class="inline">sackdelay</code></strong>·-·Delay,·in·milliseconds,·for·SAC·messages·(if·the·delay·is | 262 | <code·class="inline">flags</code>·below)</p></li><li><p><strong><code·class="inline">sackdelay</code></strong>·-·Delay,·in·milliseconds,·for·SAC·messages·(if·the·delay·is |
| 263 | enabled,·see·<code·class="inline">flags</code>·below)</p></li><li><p><strong><code·class="inline">flags</code></strong>·-·The·following·flags·are·available:</p><ul><li><p><strong><code·class="inline">hb_enable</code></strong>·-·Enables·heartbeat</p></li><li><p><strong><code·class="inline">hb_disable</code></strong>·-·Disables·heartbeat</p></li><li><p><strong><code·class="inline">hb_demand</code></strong>·-·Initiates·heartbeat·immediately</p></li><li><p><strong><code·class="inline">pmtud_enable</code></strong>·-·Enables·automatic·Path·MTU·discovery</p></li><li><p><strong><code·class="inline">pmtud_disable</code></strong>·-·Disables·automatic·Path·MTU·discovery</p></li><li><p><strong><code·class="inline">sackdelay_enable</code></strong>·-·Enables·SAC·delay</p></li><li><p><strong><code·class="inline">sackdelay_disable</code></strong>·-·Disables·SAC·delay</p></li></ul></li></ul></li><li><p><strong><code·class="inline">{sctp_default_send_param, #sctp_sndrcvinfo{}}</code></strong></p><p><a·href=""·id="record-sctp_sndrcvinfo"></a></p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">#</span><span·class="ss">sctp_sndrcvinfo</span><span·class="p"·data-group-id=" | 263 | enabled,·see·<code·class="inline">flags</code>·below)</p></li><li><p><strong><code·class="inline">flags</code></strong>·-·The·following·flags·are·available:</p><ul><li><p><strong><code·class="inline">hb_enable</code></strong>·-·Enables·heartbeat</p></li><li><p><strong><code·class="inline">hb_disable</code></strong>·-·Disables·heartbeat</p></li><li><p><strong><code·class="inline">hb_demand</code></strong>·-·Initiates·heartbeat·immediately</p></li><li><p><strong><code·class="inline">pmtud_enable</code></strong>·-·Enables·automatic·Path·MTU·discovery</p></li><li><p><strong><code·class="inline">pmtud_disable</code></strong>·-·Disables·automatic·Path·MTU·discovery</p></li><li><p><strong><code·class="inline">sackdelay_enable</code></strong>·-·Enables·SAC·delay</p></li><li><p><strong><code·class="inline">sackdelay_disable</code></strong>·-·Disables·SAC·delay</p></li></ul></li></ul></li><li><p><strong><code·class="inline">{sctp_default_send_param, #sctp_sndrcvinfo{}}</code></strong></p><p><a·href=""·id="record-sctp_sndrcvinfo"></a></p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">#</span><span·class="ss">sctp_sndrcvinfo</span><span·class="p"·data-group-id="8184873368-1">{</span><span·class="w"> |
| 264 | ······</span><span·class="ss">stream</span><span·class="w">·····</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id=" | 264 | ······</span><span·class="ss">stream</span><span·class="w">·····</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="8184873368-2">(</span><span·class="p"·data-group-id="8184873368-2">)</span><span·class="p">,</span><span·class="w"> |
| 265 | ······</span><span·class="ss">ssn</span><span·class="w">········</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id=" | 265 | ······</span><span·class="ss">ssn</span><span·class="w">········</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="8184873368-3">(</span><span·class="p"·data-group-id="8184873368-3">)</span><span·class="p">,</span><span·class="w"> |
| 266 | ······</span><span·class="ss">flags</span><span·class="w">······</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">list</span><span·class="p"·data-group-id=" | 266 | ······</span><span·class="ss">flags</span><span·class="w">······</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">list</span><span·class="p"·data-group-id="8184873368-4">(</span><span·class="p"·data-group-id="8184873368-4">)</span><span·class="p">,</span><span·class="w"> |
| 267 | ······</span><span·class="ss">ppid</span><span·class="w">·······</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id=" | 267 | ······</span><span·class="ss">ppid</span><span·class="w">·······</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="8184873368-5">(</span><span·class="p"·data-group-id="8184873368-5">)</span><span·class="p">,</span><span·class="w"> |
| 268 | ······</span><span·class="ss">context</span><span·class="w">····</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id=" | 268 | ······</span><span·class="ss">context</span><span·class="w">····</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="8184873368-6">(</span><span·class="p"·data-group-id="8184873368-6">)</span><span·class="p">,</span><span·class="w"> |
| 269 | ······</span><span·class="ss">timetolive</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id=" | 269 | ······</span><span·class="ss">timetolive</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="8184873368-7">(</span><span·class="p"·data-group-id="8184873368-7">)</span><span·class="p">,</span><span·class="w"> |
| 270 | ······</span><span·class="ss">tsn</span><span·class="w">········</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id=" | 270 | ······</span><span·class="ss">tsn</span><span·class="w">········</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="8184873368-8">(</span><span·class="p"·data-group-id="8184873368-8">)</span><span·class="p">,</span><span·class="w"> |
| 271 | ······</span><span·class="ss">cumtsn</span><span·class="w">·····</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id=" | 271 | ······</span><span·class="ss">cumtsn</span><span·class="w">·····</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="8184873368-9">(</span><span·class="p"·data-group-id="8184873368-9">)</span><span·class="p">,</span><span·class="w"> |
| 272 | ······</span><span·class="ss">assoc_id</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">assoc_id</span><span·class="p"·data-group-id=" | 272 | ······</span><span·class="ss">assoc_id</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">assoc_id</span><span·class="p"·data-group-id="8184873368-10">(</span><span·class="p"·data-group-id="8184873368-10">)</span><span·class="w"> |
| 273 | </span><span·class="p"·data-group-id=" | 273 | </span><span·class="p"·data-group-id="8184873368-1">}</span></code></pre><p><code·class="inline">#sctp_sndrcvinfo{}</code>·is·used·both·in·this·socket·option,·and·as |
| 274 | ancillary·data·while·sending·or·receiving·SCTP·messages.·When·set | 274 | ancillary·data·while·sending·or·receiving·SCTP·messages.·When·set |
| 275 | as·an·option,·it·provides·default·values·for·subsequent | 275 | as·an·option,·it·provides·default·values·for·subsequent |
| 276 | <a·href="#send/3"><code·class="inline">send</code></a>·calls·on·the·association·specified·by·<code·class="inline">assoc_id</code>.</p><p><code·class="inline">assoc_id = 0</code>·(default)·indicates·the·whole·endpoint.</p><p>The·following·fields·typically·must·be·specified·by·the·sender:</p><ul><li><p><strong><code·class="inline">sinfo_stream</code></strong>·-·Stream·number·(0-base)·within·the·association·to·send | 276 | <a·href="#send/3"><code·class="inline">send</code></a>·calls·on·the·association·specified·by·<code·class="inline">assoc_id</code>.</p><p><code·class="inline">assoc_id = 0</code>·(default)·indicates·the·whole·endpoint.</p><p>The·following·fields·typically·must·be·specified·by·the·sender:</p><ul><li><p><strong><code·class="inline">sinfo_stream</code></strong>·-·Stream·number·(0-base)·within·the·association·to·send |
| 277 | the·messages·through;</p></li><li><p><strong><code·class="inline">sinfo_flags</code></strong>·-·The·following·flags·are·recognised:</p><ul><li><p><strong><code·class="inline">unordered</code></strong>·-·The·message·is·to·be·sent·unordered</p></li><li><p><strong><code·class="inline">addr_over</code></strong>·-·The·address·specified·in·<a·href="#send/3"><code·class="inline">send</code></a>·overwrites | 277 | the·messages·through;</p></li><li><p><strong><code·class="inline">sinfo_flags</code></strong>·-·The·following·flags·are·recognised:</p><ul><li><p><strong><code·class="inline">unordered</code></strong>·-·The·message·is·to·be·sent·unordered</p></li><li><p><strong><code·class="inline">addr_over</code></strong>·-·The·address·specified·in·<a·href="#send/3"><code·class="inline">send</code></a>·overwrites |
| 278 | the·primary·peer·address</p></li><li><p><strong><code·class="inline">abort</code></strong>·-·Aborts·the·current·association·without·flushing·any·unsent | 278 | the·primary·peer·address</p></li><li><p><strong><code·class="inline">abort</code></strong>·-·Aborts·the·current·association·without·flushing·any·unsent |
| 279 | data</p></li><li><p><strong><code·class="inline">eof</code></strong>·-·Gracefully·shuts·down·the·current·association,·with·flushing | 279 | data</p></li><li><p><strong><code·class="inline">eof</code></strong>·-·Gracefully·shuts·down·the·current·association,·with·flushing |
| 280 | of·unsent·data</p></li></ul><p>Other·fields·are·rarely·used.·For·complete·information,·see | 280 | of·unsent·data</p></li></ul><p>Other·fields·are·rarely·used.·For·complete·information,·see |
| 281 | <a·href="http://www.rfc-archive.org/getrfc.php?rfc=2960">RFC·2960</a>·and | 281 | <a·href="http://www.rfc-archive.org/getrfc.php?rfc=2960">RFC·2960</a>·and |
| 282 | <a·href="http://tools.ietf.org/html/draft-ietf-tsvwg-sctpsocket-13">Sockets·API·Extensions·for·SCTP</a>.</p></li></ul></li><li><p><strong><code·class="inline">{sctp_events, #sctp_event_subscribe{}}</code></strong>·<a·href=""·id="option-sctp_events"></a></p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">#</span><span·class="ss">sctp_event_subscribe</span><span·class="p"·data-group-id=" | 282 | <a·href="http://tools.ietf.org/html/draft-ietf-tsvwg-sctpsocket-13">Sockets·API·Extensions·for·SCTP</a>.</p></li></ul></li><li><p><strong><code·class="inline">{sctp_events, #sctp_event_subscribe{}}</code></strong>·<a·href=""·id="option-sctp_events"></a></p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">#</span><span·class="ss">sctp_event_subscribe</span><span·class="p"·data-group-id="0980183294-1">{</span><span·class="w"> |
| 283 | ········</span><span·class="ss">data_io_event</span><span·class="w">··········</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">false</span><span·class="p">,</span><span·class="w"> | 283 | ········</span><span·class="ss">data_io_event</span><span·class="w">··········</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">false</span><span·class="p">,</span><span·class="w"> |
| 284 | ········</span><span·class="ss">association_event</span><span·class="w">······</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">false</span><span·class="p">,</span><span·class="w"> | 284 | ········</span><span·class="ss">association_event</span><span·class="w">······</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">false</span><span·class="p">,</span><span·class="w"> |
| 285 | ········</span><span·class="ss">address_event</span><span·class="w">··········</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">false</span><span·class="p">,</span><span·class="w"> | 285 | ········</span><span·class="ss">address_event</span><span·class="w">··········</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">false</span><span·class="p">,</span><span·class="w"> |
| 286 | ········</span><span·class="ss">send_failure_event</span><span·class="w">·····</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">false</span><span·class="p">,</span><span·class="w"> | 286 | ········</span><span·class="ss">send_failure_event</span><span·class="w">·····</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">false</span><span·class="p">,</span><span·class="w"> |
| 287 | ········</span><span·class="ss">peer_error_event</span><span·class="w">·······</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">false</span><span·class="p">,</span><span·class="w"> | 287 | ········</span><span·class="ss">peer_error_event</span><span·class="w">·······</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">false</span><span·class="p">,</span><span·class="w"> |
| 288 | ········</span><span·class="ss">shutdown_event</span><span·class="w">·········</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">false</span><span·class="p">,</span><span·class="w"> | 288 | ········</span><span·class="ss">shutdown_event</span><span·class="w">·········</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">false</span><span·class="p">,</span><span·class="w"> |
| 289 | ········</span><span·class="ss">partial_delivery_event</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">false</span><span·class="p">,</span><span·class="w"> | 289 | ········</span><span·class="ss">partial_delivery_event</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">false</span><span·class="p">,</span><span·class="w"> |
| 290 | ········</span><span·class="ss">adaptation_layer_event</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">false</span><span·class="w"> | 290 | ········</span><span·class="ss">adaptation_layer_event</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">false</span><span·class="w"> |
| 291 | </span><span·class="p"·data-group-id=" | 291 | </span><span·class="p"·data-group-id="0980183294-1">}</span></code></pre><p>This·option·determines·which·<a·href="#sctp-events">SCTP Events</a>·that·are·to·be |
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| 126 | ··</h1> | 126 | ··</h1> |
| 127 | ····<section·id="moduledoc"> | 127 | ····<section·id="moduledoc"> |
| 128 | <p>Interface·to·TCP/IP·sockets.</p><p>This·module·provides·functions·for·communicating·over·TCP/IP | 128 | <p>Interface·to·TCP/IP·sockets.</p><p>This·module·provides·functions·for·communicating·over·TCP/IP |
| 129 | protocol·sockets.</p><p>The·following·code·fragment·is·a·simple·example·of·a·client·connecting·to·a | 129 | protocol·sockets.</p><p>The·following·code·fragment·is·a·simple·example·of·a·client·connecting·to·a |
| 130 | server·at·port·5678,·transferring·a·binary,·and·closing·the·connection:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">client</span><span·class="p"·data-group-id=" | 130 | server·at·port·5678,·transferring·a·binary,·and·closing·the·connection:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">client</span><span·class="p"·data-group-id="7923869123-1">(</span><span·class="p"·data-group-id="7923869123-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 131 | ····</span><span·class="n">SomeHostInNet</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"localhost"</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%·to·make·it·runnable·on·one·machine</span><span·class="w"> | 131 | ····</span><span·class="n">SomeHostInNet</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"localhost"</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%·to·make·it·runnable·on·one·machine</span><span·class="w"> |
| 132 | ····</span><span·class="p"·data-group-id=" | 132 | ····</span><span·class="p"·data-group-id="7923869123-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Sock</span><span·class="p"·data-group-id="7923869123-2">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·cl[·...·truncated·by·diffoscope;·len:·119,·SHA:·844891f004d1423b031cbcaa797b0809a3950f81ff1f13ee49fc376da1906ff7·...·]-3">(</span><span·class="n">SomeHostInNet</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">5678</span><span·class="p">,</span><span·class="w"> |
| 133 | ·································</span><span·class="p"·data-group-id=" | 133 | ·································</span><span·class="p"·data-group-id="7923869123-4">[</span><span·class="ss">binary</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7923869123-5">{</span><span·class="ss">packet</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">0</span>[·...·truncated·by·diffoscope;·len:·147,·SHA:·535c63e885772a164f7c06288bcc8cdf6472eb85ea6c82dc33e7868eba0e166f·...·]-3">)</span><span·class="p">,</span><span·class="w"> |
| 134 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">gen_tcp</span><span·class="p">:</span><span·class="nf">send</span><span·class="p"·data-group-id=" | 134 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">gen_tcp</span><span·class="p">:</span><span·class="nf">send</span><span·class="p"·data-group-id="7923869123-6">(</span><span·class="n">Sock</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"Some·Data"</span><span·class="p"·data-group-id="7923869123-6">)</span><span·class="p">,</span><span·class="w"> |
| 135 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">gen_tcp</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id=" | 135 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">gen_tcp</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id="7923869123-7">(</span><span·class="n">Sock</span><span·class="p"·data-group-id="7923869123-7">)</span><span·class="p">.</span></code></pre><p>At·the·other·end,·a·server·is·listening·on·port·5678,·accepts·the·connection, |
| 136 | and·receives·the·binary:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">server</span><span·class="p"·data-group-id=" | 136 | and·receives·the·binary:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">server</span><span·class="p"·data-group-id="8218623620-1">(</span><span·class="p"·data-group-id="8218623620-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 137 | ····</span><span·class="p"·data-group-id=" | 137 | ····</span><span·class="p"·data-group-id="8218623620-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">LSock</span><span·class="p"·data-group-id="8218623620-2">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·c[·...·truncated·by·diffoscope;·len:·535,·SHA:·39a1d82ed9ea29d8a3183f5f775e7dacad99934b4a40e1dc06e36b8f51dc9a07·...·]-5">}</span><span·class="p">,</span><span·class="w"> |
| 138 | ········································</span><span·class="p"·data-group-id=" | 138 | ········································</span><span·class="p"·data-group-id="8218623620-6">{</span><span·class="ss">active</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">false</span><span·class="p"·data-group-id="8218623620-6">}</span><span·class="p"·data-group-id="8218623620-4">]</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·20,·SHA:·80a420b7cf339d0127ec7bffd4e84cb59bb0dc6eb455a4e631036915be52f5a1·...·]-3">)</span><span·class="p">,</span><span·class="w"> |
| 139 | ····</span><span·class="p"·data-group-id=" | 139 | ····</span><span·class="p"·data-group-id="8218623620-7">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Sock</span><span·class="p"·data-group-id="8218623620-7">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·cl[·...·truncated·by·diffoscope;·len:·199,·SHA:·d805ef14a974794cfad330fce70036764ade359a35e4d2988674bf27fd63f4eb·...·]-8">)</span><span·class="p">,</span><span·class="w"> |
| 140 | ····</span><span·class="p"·data-group-id=" | 140 | ····</span><span·class="p"·data-group-id="8218623620-9">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Bin</span><span·class="p"·data-group-id="8218623620-9">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·cla[·...·truncated·by·diffoscope;·len:·300,·SHA:·997bb57da50fc3adfe695de12481c4b6e92550e332b37c97ab85a104ae7d8fa2·...·]-10">)</span><span·class="p">,</span><span·class="w"> |
| 141 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">gen_tcp</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id=" | 141 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">gen_tcp</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id="8218623620-12">(</span><span·class="n">Sock</span><span·class="p"·data-group-id="8218623620-12">)</span><span·class="p">,</span><span·class="w"> |
| 142 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">gen_tcp</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id=" | 142 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">gen_tcp</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id="8218623620-13">(</span><span·class="n">LSock</span><span·class="p"·data-group-id="8218623620-13">)</span><span·class="p">,</span><span·class="w"> |
| 143 | ····</span><span·class="n">Bin</span><span·class="p">.</span><span·class="w"> | 143 | ····</span><span·class="n">Bin</span><span·class="p">.</span><span·class="w"> |
| 144 | </span><span·class="nf">do_recv</span><span·class="p"·data-group-id=" | 144 | </span><span·class="nf">do_recv</span><span·class="p"·data-group-id="8218623620-14">(</span><span·class="n">Sock</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Bs</span><span·class="p"·data-group-id="8218623620-14">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 145 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">gen_tcp</span><span·class="p">:</span><span·class="nf">recv</span><span·class="p"·data-group-id=" | 145 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">gen_tcp</span><span·class="p">:</span><span·class="nf">recv</span><span·class="p"·data-group-id="8218623620-15">(</span><span·class="n">Sock</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">0</span><span·class="p"·data-group-id="8218623620-15">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 146 | ········</span><span·class="p"·data-group-id=" | 146 | ········</span><span·class="p"·data-group-id="8218623620-16">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">B</span><span·class="p"·data-group-id="8218623620-16">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 147 | ············</span><span·class="nf">do_recv</span><span·class="p"·data-group-id=" | 147 | ············</span><span·class="nf">do_recv</span><span·class="p"·data-group-id="8218623620-17">(</span><span·class="n">Sock</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8218623620-18">[</span><span·class="n">Bs</span><span·class="p">,</span><span·class="w">·</span><span·class="n">B</span><span·c[·...·truncated·by·diffoscope;·len:·88,·SHA:·a4d54bfd39fadf9a9ba1e4bbd2a522b50b1ba5cd87a3907d4e248225c8850d78·...·]-17">)</span><span·class="p">;</span><span·class="w"> |
| 148 | ········</span><span·class="p"·data-group-id=" | 148 | ········</span><span·class="p"·data-group-id="8218623620-19">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">closed</span><span·class="p"·data-group-id="8218623620-19">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 149 | ············</span><span·class="p"·data-group-id=" | 149 | ············</span><span·class="p"·data-group-id="8218623620-20">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">list_to_binary</span><span·class="p"·data-group-id="8218623620-21">(</span><span·class="n">Bs</span><span·class="p"·data-group-id="8218623620-[·...·truncated·by·diffoscope;·len:·53,·SHA:·9d5ef55706f14aa3d28ee9a9cac8d4963924497623ff65e93908337fc03606ab·...·]-20">}</span><span·class="w"> |
| 150 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>For·more·examples,·see·section·<a·href="#module-examples">Examples</a>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Functions·that·create·sockets·can·take·an·optional·option; | 150 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>For·more·examples,·see·section·<a·href="#module-examples">Examples</a>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Functions·that·create·sockets·can·take·an·optional·option; |
| 151 | <code·class="inline">{inet_backend, Backend}</code>·that,·if·specified,·has·to·be·the·first·option.·This | 151 | <code·class="inline">{inet_backend, Backend}</code>·that,·if·specified,·has·to·be·the·first·option.·This |
| 152 | selects·the·implementation·backend·towards·the·platform's·socket·API.</p><p>This·is·a·<em>temporary</em>·option·that·will·be·ignored·in·a·future·release.</p><p>The·default·is·<code·class="inline">Backend = inet</code>·that·selects·the·traditional·<code·class="inline">inet_drv.c</code> | 152 | selects·the·implementation·backend·towards·the·platform's·socket·API.</p><p>This·is·a·<em>temporary</em>·option·that·will·be·ignored·in·a·future·release.</p><p>The·default·is·<code·class="inline">Backend = inet</code>·that·selects·the·traditional·<code·class="inline">inet_drv.c</code> |
| 153 | driver.·The·other·choice·is·<code·class="inline">Backend = socket</code>·that·selects·the·new·<a·href="socket.html"><code·class="inline">socket</code></a> | 153 | driver.·The·other·choice·is·<code·class="inline">Backend = socket</code>·that·selects·the·new·<a·href="socket.html"><code·class="inline">socket</code></a> |
| 154 | module·and·its·NIF·implementation.</p><p>The·system·default·can·be·changed·when·the·node·is·started·with·the | 154 | module·and·its·NIF·implementation.</p><p>The·system·default·can·be·changed·when·the·node·is·started·with·the |
| 155 | application·<code·class="inline">kernel</code>'s·configuration·variable·<code·class="inline">inet_backend</code>.</p><p>For·<code·class="inline">gen_tcp</code>·with·<code·class="inline">inet_backend·=·socket</code>·we·have·tried·to·be·as·"compatible" | 155 | application·<code·class="inline">kernel</code>'s·configuration·variable·<code·class="inline">inet_backend</code>.</p><p>For·<code·class="inline">gen_tcp</code>·with·<code·class="inline">inet_backend·=·socket</code>·we·have·tried·to·be·as·"compatible" |
| 156 | as·possible·which·has·sometimes·been·impossible.·Here·is·a·list·of·cases·when | 156 | as·possible·which·has·sometimes·been·impossible.·Here·is·a·list·of·cases·when |
| Offset 185, 91 lines modified | Offset 185, 91 lines modified | ||
| 185 | ··<span·class="text">Examples</span> | 185 | ··<span·class="text">Examples</span> |
| 186 | </h2> | 186 | </h2> |
| 187 | <p>The·following·example·illustrates·use·of·option·<code·class="inline">{active,once}</code>·and·multiple | 187 | <p>The·following·example·illustrates·use·of·option·<code·class="inline">{active,once}</code>·and·multiple |
| 188 | accepts·by·implementing·a·server·as·a·number·of·worker·processes·doing·accept·on | 188 | accepts·by·implementing·a·server·as·a·number·of·worker·processes·doing·accept·on |
| 189 | a·single·listening·socket.·Function·<code·class="inline">start/2</code>·takes·the·number·of·worker | 189 | a·single·listening·socket.·Function·<code·class="inline">start/2</code>·takes·the·number·of·worker |
| 190 | processes·and·the·port·number·on·which·to·listen·for·incoming·connections.·If | 190 | processes·and·the·port·number·on·which·to·listen·for·incoming·connections.·If |
| 191 | <code·class="inline">LPort</code>·is·specified·as·<code·class="inline">0</code>,·an·ephemeral·port·number·is·used,·which·is·why·the | 191 | <code·class="inline">LPort</code>·is·specified·as·<code·class="inline">0</code>,·an·ephemeral·port·number·is·used,·which·is·why·the |
| 192 | start·function·returns·the·actual·port·number·allocated:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">start</span><span·class="p"·data-group-id=" | 192 | start·function·returns·the·actual·port·number·allocated:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">start</span><span·class="p"·data-group-id="6651297715-1">(</span><span·class="n">Num</span><span·class="p">,</span><span·class="n">LPort</span><span·class="p"·data-group-id="6651297715-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 193 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">gen_tcp</span><span·class="p">:</span><span·class="nf">listen</span><span·class="p"·data-group-id=" | 193 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">gen_tcp</span><span·class="p">:</span><span·class="nf">listen</span><span·class="p"·data-group-id="6651297715-2">(</span><span·class="n">LPort</span><span·class="p">,</span><span·class="p"·data-group-id="6651297715-3">[</span><span·class="p"·data-group-id="6651297715-4">{</span><span·class="ss">active</span><span·class="p">,</span><span·class="w">·</spa[·...·truncated·by·diffoscope;·len:·387,·SHA:·fec26ba14762579c6892b099e599da61656c57bff02d08a8ab0771e07b44b6a9·...·]-2">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 194 | ········</span><span·class="p"·data-group-id=" | 194 | ········</span><span·class="p"·data-group-id="6651297715-6">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ListenSock</span><span·class="p"·data-group-id="6651297715-6">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 195 | ············</span><span·class="nf">start_servers</span><span·class="p"·data-group-id=" | 195 | ············</span><span·class="nf">start_servers</span><span·class="p"·data-group-id="6651297715-7">(</span><span·class="n">Num</span><span·class="p">,</span><span·class="n">ListenSock</span><span·class="p"·data-group-id="6651297715-7">)</span><span·class="p">,</span><span·class="w"> |
| 196 | ············</span><span·class="p"·data-group-id=" | 196 | ············</span><span·class="p"·data-group-id="6651297715-8">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Port</span><span·class="p"·data-group-id="6651297715-8">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·cl[·...·truncated·by·diffoscope;·len:·199,·SHA:·d595259396975eea1793c1e7fb0a412aa5d95106454f2fc0a10197154b3ebc7d·...·]-9">)</span><span·class="p">,</span><span·class="w"> |
| 197 | ············</span><span·class="n">Port</span><span·class="p">;</span><span·class="w"> | 197 | ············</span><span·class="n">Port</span><span·class="p">;</span><span·class="w"> |
| 198 | ········</span><span·class="p"·data-group-id=" | 198 | ········</span><span·class="p"·data-group-id="6651297715-10">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="n">Reason</span><span·class="p"·data-group-id="6651297715-10">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 199 | ············</span><span·class="p"·data-group-id=" | 199 | ············</span><span·class="p"·data-group-id="6651297715-11">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="n">Reason</span><span·class="p"·data-group-id="6651297715-11">}</span><span·class="w"> |
| 200 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 200 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 201 | </span><span·class="nf">start_servers</span><span·class="p"·data-group-id=" | 201 | </span><span·class="nf">start_servers</span><span·class="p"·data-group-id="6651297715-12">(</span><span·class="mi">0</span><span·class="p">,</span><span·class="p">_</span><span·class="p"·data-group-id="6651297715-12">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 202 | ····</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> | 202 | ····</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> |
| 203 | </span><span·class="nf">start_servers</span><span·class="p"·data-group-id=" | 203 | </span><span·class="nf">start_servers</span><span·class="p"·data-group-id="6651297715-13">(</span><span·class="n">Num</span><span·class="p">,</span><span·class="n">LS</span><span·class="p"·data-group-id="6651297715-13">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 204 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id=" | 204 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id="6651297715-14">(</span><span·class="o">?</span><span·class="n">MODULE</span><span·class="p">,</span><span·class="ss">server</span><span·class="p">,</span><span·class="p"·data-group-id="6651297715-15">[</span><span·class="n">LS</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·72,·SHA:·d4dd6fba2c135e4db3b0f76bcda60ace40a3c1d2742b49eb01b5fc03e439ede2·...·]-14">)</span><span·class="p">,</span><span·class="w"> |
| 205 | ····</span><span·class="nf">start_servers</span><span·class="p"·data-group-id=" | 205 | ····</span><span·class="nf">start_servers</span><span·class="p"·data-group-id="6651297715-16">(</span><span·class="n">Num</span><span·class="o">-</span><span·class="mi">1</span><span·class="p">,</span><span·class="n">LS</span><span·class="p"·data-group-id="6651297715-16">)</span><span·class="p">.</span><span·class="w"> |
| 206 | </span><span·class="nf">server</span><span·class="p"·data-group-id=" | 206 | </span><span·class="nf">server</span><span·class="p"·data-group-id="6651297715-17">(</span><span·class="n">LS</span><span·class="p"·data-group-id="6651297715-17">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 207 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">gen_tcp</span><span·class="p">:</span><span·class="nf">accept</span><span·class="p"·data-group-id=" | 207 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">gen_tcp</span><span·class="p">:</span><span·class="nf">accept</span><span·class="p"·data-group-id="6651297715-18">(</span><span·class="n">LS</span><span·class="p"·data-group-id="6651297715-18">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 208 | ········</span><span·class="p"·data-group-id=" | 208 | ········</span><span·class="p"·data-group-id="6651297715-19">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">S</span><span·class="p"·data-group-id="6651297715-19">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 209 | ············</span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 209 | ············</span><span·class="nf">loop</span><span·class="p"·data-group-id="6651297715-20">(</span><span·class="n">S</span><span·class="p"·data-group-id="6651297715-20">)</span><span·class="p">,</span><span·class="w"> |
| 210 | ············</span><span·class="nf">server</span><span·class="p"·data-group-id=" | 210 | ············</span><span·class="nf">server</span><span·class="p"·data-group-id="6651297715-21">(</span><span·class="n">LS</span><span·class="p"·data-group-id="6651297715-21">)</span><span·class="p">;</span><span·class="w"> |
| 211 | ········</span><span·class="n">Other</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 211 | ········</span><span·class="n">Other</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 212 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 212 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="6651297715-22">(</span><span·class="s">"accept·returned·</span><span·class="si">~w</span><span·class="s">·-·goodbye!</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="p"·data-group-id="6651297715-23">[</[·...·truncated·by·diffoscope;·len:·128,·SHA:·77d91c64ac95c5675b1b7171b3ebbbed74aa10bbfd1a3a1f14e5e5a5d0406e43·...·]-22">)</span><span·class="p">,</span><span·class="w"> |
| 213 | ············</span><span·class="ss">ok</span><span·class="w"> | 213 | ············</span><span·class="ss">ok</span><span·class="w"> |
| 214 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 214 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 215 | </span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 215 | </span><span·class="nf">loop</span><span·class="p"·data-group-id="6651297715-24">(</span><span·class="n">S</span><span·class="p"·data-group-id="6651297715-24">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 216 | ····</span><span·class="nc">inet</span><span·class="p">:</span><span·class="nf">setopts</span><span·class="p"·data-group-id=" | 216 | ····</span><span·class="nc">inet</span><span·class="p">:</span><span·class="nf">setopts</span><span·class="p"·data-group-id="6651297715-25">(</span><span·class="n">S</span><span·class="p">,</span><span·class="p"·data-group-id="6651297715-26">[</span><span·class="p"·data-group-id="6651297715-27">{</span><span·class="ss">active</span><span·class="p">,</span><span·class="ss">once</[·...·truncated·by·diffoscope;·len:·154,·SHA:·ed7a919e3b6df0c71f2caf2178a2b4169dc43b88dbad0fb707a38f3773de7a33·...·]-25">)</span><span·class="p">,</span><span·class="w"> |
| 217 | ····</span><span·class="k">receive</span><span·class="w"> | 217 | ····</span><span·class="k">receive</span><span·class="w"> |
| 218 | ········</span><span·class="p"·data-group-id=" | 218 | ········</span><span·class="p"·data-group-id="6651297715-28">{</span><span·class="ss">tcp</span><span·class="p">,</span><span·class="n">S</span><span·class="p">,</span><span·class="n">Data</span><span·class="p"·data-group-id="6651297715-28">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 219 | ············</span><span·class="n">Answer</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">process</span><span·class="p"·data-group-id=" | 219 | ············</span><span·class="n">Answer</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">process</span><span·class="p"·data-group-id="6651297715-29">(</span><span·class="n">Data</span><span·class="p"·data-group-id="6651297715-29">)</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%·Not·implemented·in·this·example</span><span·class="w"> |
| 220 | ············</span><span·class="nc">gen_tcp</span><span·class="p">:</span><span·class="nf">send</span><span·class="p"·data-group-id=" | 220 | ············</span><span·class="nc">gen_tcp</span><span·class="p">:</span><span·class="nf">send</span><span·class="p"·data-group-id="6651297715-30">(</span><span·class="n">S</span><span·class="p">,</span><span·class="n">Answer</span><span·class="p"·data-group-id="6651297715-30">)</span><span·class="p">,</span><span·class="w"> |
| 221 | ············</span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 221 | ············</span><span·class="nf">loop</span><span·class="p"·data-group-id="6651297715-31">(</span><span·class="n">S</span><span·class="p"·data-group-id="6651297715-31">)</span><span·class="p">;</span><span·class="w"> |
| 222 | ········</span><span·class="p"·data-group-id=" | 222 | ········</span><span·class="p"·data-group-id="6651297715-32">{</span><span·class="ss">tcp_closed</span><span·class="p">,</span><span·class="n">S</span><span·class="p"·data-group-id="6651297715-32">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 223 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 223 | ············</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="6651297715-33">(</span><span·class="s">"Socket·</span><span·class="si">~w</span><span·class="s">·closed·[</span><span·class="si">~w</span><span·class="s">]</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·clas[·...·truncated·by·diffoscope;·len:·323,·SHA:·42ae2b36313d33b0be886f9b0102023d734ea1e6fea0beaafd1a9c3882161290·...·]-33">)</span><span·class="p">,</span><span·class="w"> |
| 224 | ············</span><span·class="ss">ok</span><span·class="w"> | 224 | ············</span><span·class="ss">ok</span><span·class="w"> |
| 225 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>Example·of·a·simple·client:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">client</span><span·class="p"·data-group-id=" | 225 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>Example·of·a·simple·client:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">client</span><span·class="p"·data-group-id="8582312873-1">(</span><span·class="n">PortNo</span><span·class="p">,</span><span·class="n">Message</span><span·class="p"·data-group-id="8582312873-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 226 | ····</span><span·class="p"·data-group-id=" | 226 | ····</span><span·class="p"·data-group-id="8582312873-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">Sock</span><span·class="p"·data-group-id="8582312873-2">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">gen_tcp</span><[·...·truncated·by·diffoscope;·len:·458,·SHA:·e5f87aa00751325d412a360dfb4bf6baad5e4a86010d7c67c68a86f0b9171bd6·...·]-5">}</span><span·class="p">,</span><span·class="w"> |
| 227 | ····················································</span><span·class="p"·data-group-id=" | 227 | ····················································</span><span·class="p"·data-group-id="8582312873-6">{</span><span·class="ss">packet</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="8582312873-6">}</span><span·class="p"·data-group-id="8582312873-4">]</span><span·class="p"·data-group-id="8582312873-3">)</span><span·class="p">,</span><span·class="w"> |
| 228 | ····</span><span·class="nc">gen_tcp</span><span·class="p">:</span><span·class="nf">send</span><span·class="p"·data-group-id=" | 228 | ····</span><span·class="nc">gen_tcp</span><span·class="p">:</span><span·class="nf">send</span><span·class="p"·data-group-id="8582312873-7">(</span><span·class="n">Sock</span><span·class="p">,</span><span·class="n">Message</span><span·class="p"·data-group-id="8582312873-7">)</span><span·class="p">,</span><span·class="w"> |
| 229 | ····</span><span·class="n">A</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">gen_tcp</span><span·class="p">:</span><span·class="nf">recv</span><span·class="p"·data-group-id=" | 229 | ····</span><span·class="n">A</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">gen_tcp</span><span·class="p">:</span><span·class="nf">recv</span><span·class="p"·data-group-id="8582312873-8">(</span><span·class="n">Sock</span><span·class="p">,</span><span·class="mi">0</span><span·class="p"·data-group-id="8582312873-8">)</span><span·class="p">,</span><span·class="w"> |
| 230 | ····</span><span·class="nc">gen_tcp</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id=" | 230 | ····</span><span·class="nc">gen_tcp</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id="8582312873-9">(</span><span·class="n">Sock</span><span·class="p"·data-group-id="8582312873-9">)</span><span·class="p">,</span><span·class="w"> |
| 231 | ····</span><span·class="n">A</span><span·class="p">.</span></code></pre><p>The·<code·class="inline">send</code>·call·does·not·accept·a·time-out·option·because·time-outs·on·send·is | 231 | ····</span><span·class="n">A</span><span·class="p">.</span></code></pre><p>The·<code·class="inline">send</code>·call·does·not·accept·a·time-out·option·because·time-outs·on·send·is |
| 232 | handled·through·socket·option·<code·class="inline">send_timeout</code>.·The·behavior·of·a·send·operation | 232 | handled·through·socket·option·<code·class="inline">send_timeout</code>.·The·behavior·of·a·send·operation |
| 233 | with·no·receiver·is·mainly·defined·by·the·underlying·TCP·stack·and·the·network | 233 | with·no·receiver·is·mainly·defined·by·the·underlying·TCP·stack·and·the·network |
| 234 | infrastructure.·To·write·code·that·handles·a·hanging·receiver·that·can | 234 | infrastructure.·To·write·code·that·handles·a·hanging·receiver·that·can |
| 235 | eventually·cause·the·sender·to·hang·on·a·<code·class="inline">send</code>·do·like·the·following.</p><p>Consider·a·process·that·receives·data·from·a·client·process·to·be·forwarded·to·a | 235 | eventually·cause·the·sender·to·hang·on·a·<code·class="inline">send</code>·do·like·the·following.</p><p>Consider·a·process·that·receives·data·from·a·client·process·to·be·forwarded·to·a |
| 236 | server·on·the·network.·The·process·is·connected·to·the·server·through·TCP/IP·and | 236 | server·on·the·network.·The·process·is·connected·to·the·server·through·TCP/IP·and |
| 237 | does·not·get·any·acknowledge·for·each·message·it·sends,·but·has·to·rely·on·the | 237 | does·not·get·any·acknowledge·for·each·message·it·sends,·but·has·to·rely·on·the |
| 238 | send·time-out·option·to·detect·that·the·other·end·is·unresponsive.·Option | 238 | send·time-out·option·to·detect·that·the·other·end·is·unresponsive.·Option |
| 239 | <code·class="inline">send_timeout</code>·can·be·used·when·connecting:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 239 | <code·class="inline">send_timeout</code>·can·be·used·when·connecting:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 240 | </span><span·class="p"·data-group-id=" | 240 | </span><span·class="p"·data-group-id="1989240070-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">Sock</span><span·class="p"·data-group-id="1989240070-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">gen_tcp</span><[·...·truncated·by·diffoscope;·len:·95,·SHA:·f34af3ae961887bf6affff86e05ad3605776e08ebac36bec15a0095e3d392a4f·...·]-2">(</span><span·class="n">HostAddress</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Port</span><span·class="p">,</span><span·class="w"> |
| 241 | ····························</span><span·class="p"·data-group-id=" | 241 | ····························</span><span·class="p"·data-group-id="1989240070-3">[</span><span·class="p"·data-group-id="1989240070-4">{</span><span·class="ss">active</span><span·class="p">,</span><span·class="ss">false</span><span·class="p"·data-group-id="1989240070-4">}</span><span·class="p">,</span><span·class="w"> |
| 242 | ·····························</span><span·class="p"·data-group-id=" | 242 | ·····························</span><span·class="p"·data-group-id="1989240070-5">{</span><span·class="ss">send_timeout</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">5000</span><span·class="p"·data-group-id="1989240070-5">}</span><span·class="p">,</span><span·class="w"> |
| 243 | ·····························</span><span·class="p"·data-group-id=" | 243 | ·····························</span><span·class="p"·data-group-id="1989240070-6">{</span><span·class="ss">packet</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="1989240070-6">}</span><span·class="p"·data-group-id="1989240070-3">]</span><span·class="p"·data-group-id="1989240070-2">)</span><span·class="p">,</span><span·class="w"> |
| 244 | ················</span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 244 | ················</span><span·class="nf">loop</span><span·class="p"·data-group-id="1989240070-7">(</span><span·class="n">Sock</span><span·class="p"·data-group-id="1989240070-7">)</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%·See·below</span><span·class="w"> |
| 245 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>In·the·loop·where·requests·are·handled,·send·time-outs·can·now·be·detected:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">loop</span><span·class="p"·data-group-id=" | 245 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>In·the·loop·where·requests·are·handled,·send·time-outs·can·now·be·detected:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">loop</span><span·class="p"·data-group-id="2037723182-1">(</span><span·class="n">Sock</span><span·class="p"·data-group-id="2037723182-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 246 | ····</span><span·class="k">receive</span><span·class="w"> | 246 | ····</span><span·class="k">receive</span><span·class="w"> |
| 247 | ········</span><span·class="p"·data-group-id=" | 247 | ········</span><span·class="p"·data-group-id="2037723182-2">{</span><span·class="n">Client</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">send_data</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Binary</span><span·class="p"·data-group-id="2037723182-2">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 248 | ············</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">gen_tcp</span><span·class="p">:</span><span·class="nf">send</span><span·class="p"·data-group-id=" | 248 | ············</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">gen_tcp</span><span·class="p">:</span><span·class="nf">send</span><span·class="p"·data-group-id="2037723182-3">(</span><span·class="n">Sock</span><span·class="p">,</span><span·class="p"·data-group-id="2037723182-4">[</span><span·class="n">Binary</span><span·class="p"·data-group-id="2037723182-4">]</span><span·class="p"·data-group-id="2037723182-3">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 249 | ················</span><span·class="p"·data-group-id=" | 249 | ················</span><span·class="p"·data-group-id="2037723182-5">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">timeout</span><span·class="p"·data-group-id="2037723182-5">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 250 | ····················</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 250 | ····················</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="2037723182-6">(</span><span·class="s">"Send·timeout,·closing!</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w"> |
| 251 | ······························</span><span·class="p"·data-group-id=" | 251 | ······························</span><span·class="p"·data-group-id="2037723182-7">[</span><span·class="p"·data-group-id="2037723182-7">]</span><span·class="p"·data-group-id="2037723182-6">)</span><span·class="p">,</span><span·class="w"> |
| 252 | ····················</span><span·class="nf">handle_send_timeout</span><span·class="p"·data-group-id=" | 252 | ····················</span><span·class="nf">handle_send_timeout</span><span·class="p"·data-group-id="2037723182-8">(</span><span·class="p"·data-group-id="2037723182-8">)</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%·Not·implemented·here</span><span·class="w"> |
| 253 | ····················</span><span·class="n">Client</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 253 | ····················</span><span·class="n">Client</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="2037723182-9">{</span><span·class="nf">self</span><span·class="p"·data-group-id="2037723182-10">(</span><span·class="p"·data-group-id="2037723182-10">)</span><span·class="p">,</span><span·class="p"·data-group-id="2037723182-11">{</span><span·class="ss">err[·...·truncated·by·diffoscope;·len:·191,·SHA:·dd29cd5d15879d5e768e36f43dc50a2846dcd5606b9d49e7f86a55335a725b92·...·]-9">}</span><span·class="p">,</span><span·class="w"> |
| 254 | ····················</span><span·class="c1">%%·Usually,·it's·a·good·idea·to·give·up·in·case·of·a</span><span·class="w"> | 254 | ····················</span><span·class="c1">%%·Usually,·it's·a·good·idea·to·give·up·in·case·of·a</span><span·class="w"> |
| 255 | ····················</span><span·class="c1">%%·send·timeout,·as·you·never·know·how·much·actually</span><span·class="w"> | 255 | ····················</span><span·class="c1">%%·send·timeout,·as·you·never·know·how·much·actually</span><span·class="w"> |
| 256 | ····················</span><span·class="c1">%%·reached·the·server,·maybe·only·a·packet·header?!</span><span·class="w"> | 256 | ····················</span><span·class="c1">%%·reached·the·server,·maybe·only·a·packet·header?!</span><span·class="w"> |
| 257 | ····················</span><span·class="nc">gen_tcp</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id=" | 257 | ····················</span><span·class="nc">gen_tcp</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id="2037723182-12">(</span><span·class="n">Sock</span><span·class="p"·data-group-id="2037723182-12">)</span><span·class="p">;</span><span·class="w"> |
| 258 | ················</span><span·class="p"·data-group-id=" | 258 | ················</span><span·class="p"·data-group-id="2037723182-13">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="n">OtherSendError</span><span·class="p"·data-group-id="2037723182-13">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 259 | ····················</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 259 | ····················</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="2037723182-14">(</span><span·class="s">"Some·other·error·on·socket·(</span><span·class="si">~p</span><span·class="s">),·closing"</span><span·class="p">,</span><span·class="w"> |
| 260 | ······························</span><span·class="p"·data-group-id=" | 260 | ······························</span><span·class="p"·data-group-id="2037723182-15">[</span><span·class="n">OtherSendError</span><span·class="p"·data-group-id="2037723182-15">]</span><span·class="p"·data-group-id="2037723182-14">)</span><span·class="p">,</span><span·class="w"> |
| 261 | ····················</span><span·class="n">Client</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 261 | ····················</span><span·class="n">Client</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="2037723182-16">{</span><span·class="nf">self</span><span·class="p"·data-group-id="2037723182-17">(</span><span·class="p"·data-group-id="2037723182-17">)</span><span·class="p">,</span><span·class="p"·data-group-id="2037723182-18">{</span><span·class="ss">er[·...·truncated·by·diffoscope;·len:·198,·SHA:·c1ce9bde324fd98d9b32dc19691bd5603eb84032e04474588c3539d1d0d06a36·...·]-16">}</span><span·class="p">,</span><span·class="w"> |
| 262 | ····················</span><span·class="nc">gen_tcp</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id=" | 262 | ····················</span><span·class="nc">gen_tcp</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id="2037723182-19">(</span><span·class="n">Sock</span><span·class="p"·data-group-id="2037723182-19">)</span><span·class="p">;</span><span·class="w"> |
| 263 | ················</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 263 | ················</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 264 | ····················</span><span·class="n">Client</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 264 | ····················</span><span·class="n">Client</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="2037723182-20">{</span><span·class="nf">self</span><span·class="p"·data-group-id="2037723182-21">(</span><span·class="p"·data-group-id="2037723182-21">)</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">data_sent</span><span·class="p"·[·...·truncated·by·diffoscope;·len:·25,·SHA:·a750483b0045d1cf4d11cd054367ffd673febf7ec90402d7afb9dcfc74eff4fd·...·]-20">}</span><span·class="p">,</span><span·class="w"> |
| 265 | ····················</span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 265 | ····················</span><span·class="nf">loop</span><span·class="p"·data-group-id="2037723182-22">(</span><span·class="n">Sock</span><span·class="p"·data-group-id="2037723182-22">)</span><span·class="w"> |
| 266 | ············</span><span·class="k">end</span><span·class="w"> | 266 | ············</span><span·class="k">end</span><span·class="w"> |
| 267 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>Usually·it·suffices·to·detect·time-outs·on·receive,·as·most·protocols·include | 267 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>Usually·it·suffices·to·detect·time-outs·on·receive,·as·most·protocols·include |
| 268 | some·sort·of·acknowledgment·from·the·server,·but·if·the·protocol·is·strictly·one | 268 | some·sort·of·acknowledgment·from·the·server,·but·if·the·protocol·is·strictly·one |
| 269 | way,·option·<code·class="inline">send_timeout</code>·comes·in·handy.</p> | 269 | way,·option·<code·class="inline">send_timeout</code>·comes·in·handy.</p> |
| 270 | ····</section> | 270 | ····</section> |
| 271 | </div> | 271 | </div> |
| Max diff block lines reached; -1/60885 bytes (-0.00%) of diff not shown. | |||
| Offset 924, 25 lines modified | Offset 924, 25 lines modified | ||
| 924 | time-to-live·(TTL)·for·outgoing·multicast·datagrams·to·control·the·scope·of | 924 | time-to-live·(TTL)·for·outgoing·multicast·datagrams·to·control·the·scope·of |
| 925 | the·multicasts.</p><p>Datagrams·with·a·TTL·of·1·are·not·forwarded·beyond·the·local·network. | 925 | the·multicasts.</p><p>Datagrams·with·a·TTL·of·1·are·not·forwarded·beyond·the·local·network. |
| 926 | Defaults·to·<code·class="inline">1</code>.</p></li><li><p><strong><code·class="inline">{add_membership, {MultiAddress, InterfaceAddress}}</code></strong>·- | 926 | Defaults·to·<code·class="inline">1</code>.</p></li><li><p><strong><code·class="inline">{add_membership, {MultiAddress, InterfaceAddress}}</code></strong>·- |
| 927 | Joins·a·multicast·group.</p></li><li><p><strong><code·class="inline">{drop_membership, {MultiAddress, InterfaceAddress}}</code></strong>·- | 927 | Joins·a·multicast·group.</p></li><li><p><strong><code·class="inline">{drop_membership, {MultiAddress, InterfaceAddress}}</code></strong>·- |
| 928 | Leaves·a·multicast·group.</p></li><li><p><strong><a·href="#t:option/0"><code·class="inline">option/0</code></a></strong>·-·See·<a·href="inet.html#setopts/2"><code·class="inline">inet:setopts/2</code></a>.</p></li></ul><p>UDP·packets·are·sent·with·this·socket·using·<a·href="#send/3"><code·class="inline">send(Socket, ...)</code></a>. | 928 | Leaves·a·multicast·group.</p></li><li><p><strong><a·href="#t:option/0"><code·class="inline">option/0</code></a></strong>·-·See·<a·href="inet.html#setopts/2"><code·class="inline">inet:setopts/2</code></a>.</p></li></ul><p>UDP·packets·are·sent·with·this·socket·using·<a·href="#send/3"><code·class="inline">send(Socket, ...)</code></a>. |
| 929 | When·UDP·packets·arrive·to·the·<code·class="inline">Socket</code>'s·UDP·port,·and·the·socket·is·in | 929 | When·UDP·packets·arrive·to·the·<code·class="inline">Socket</code>'s·UDP·port,·and·the·socket·is·in |
| 930 | an·<em>active·mode</em>,·the·packets·are·delivered·as·messages·to·the | 930 | an·<em>active·mode</em>,·the·packets·are·delivered·as·messages·to·the |
| 931 | controlling·process·(socket·owner):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="77 | 931 | controlling·process·(socket·owner):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="7724108166-1">{</span><span·class="ss">udp</span><span·class="p">,</span><span·class="err"> </span><span·class="n">Socket</span><span·class="p">,</span><span·class="err"> </span><span·class="n">PeerIP</span><span·class="p">,</span><span·class="err"> </span><[·...·truncated·by·diffoscope;·len:·150,·SHA:·776377826b72ec71f7b25bce572183af7386a96d3563897aea3550d315324abf·...·]-1">}</span><span·class="w">·</span><span·class="c1">%·Without·ancillary·data</span><span·class="w"> |
| 932 | </span><span·class="p"·data-group-id="77 | 932 | </span><span·class="p"·data-group-id="7724108166-2">{</span><span·class="ss">udp</span><span·class="p">,</span><span·class="err"> </span><span·class="n">Socket</span><span·class="p">,</span><span·class="err"> </span><span·class="n">PeerIP</span><span·class="p">,</span><span·class="err"> </span><[·...·truncated·by·diffoscope;·len:·230,·SHA:·888d128477cac47a693c1d5e3396f21b036e9fdd74895778fa78766077a95933·...·]-2">}</span><span·class="w">·</span><span·class="c1">%·With·ancillary·data</span></code></pre><p><code·class="inline">PeerIP</code>·and·<code·class="inline">PeerPort</code>·are·the·address·from·which·<code·class="inline">Packet</code>·was·sent. |
| 933 | <code·class="inline">Packet</code>·is·a·list·of·bytes·(<code·class="inline">[</code><a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:byte/0"><code·class="inline">byte/0</code></a><code·class="inline">]</code>·if·option·<code·class="inline">list</code> | 933 | <code·class="inline">Packet</code>·is·a·list·of·bytes·(<code·class="inline">[</code><a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:byte/0"><code·class="inline">byte/0</code></a><code·class="inline">]</code>·if·option·<code·class="inline">list</code> |
| 934 | is·active·and·a·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0"><code·class="inline">binary/0</code></a>·if·option·<code·class="inline">binary</code>is·active | 934 | is·active·and·a·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0"><code·class="inline">binary/0</code></a>·if·option·<code·class="inline">binary</code>is·active |
| 935 | (they·are·mutually·exclusive).</p><p>The·message·contains·an·<code·class="inline">AncData</code>·field·only·if·any·of·the·socket | 935 | (they·are·mutually·exclusive).</p><p>The·message·contains·an·<code·class="inline">AncData</code>·field·only·if·any·of·the·socket |
| 936 | <a·href="#t:option/0">options</a>·<a·href="inet.html#option-recvtos"><code·class="inline">recvtos</code></a>, | 936 | <a·href="#t:option/0">options</a>·<a·href="inet.html#option-recvtos"><code·class="inline">recvtos</code></a>, |
| 937 | <a·href="inet.html#option-recvtclass"><code·class="inline">recvtclass</code></a>·or | 937 | <a·href="inet.html#option-recvtclass"><code·class="inline">recvtclass</code></a>·or |
| 938 | <a·href="inet.html#option-recvttl"><code·class="inline">recvttl</code></a>·are·active.</p><p>When·a·socket·in·<code·class="inline">{active, N}</code>·mode·(see·<a·href="inet.html#setopts/2"><code·class="inline">inet:setopts/2</code></a>·for·details), | 938 | <a·href="inet.html#option-recvttl"><code·class="inline">recvttl</code></a>·are·active.</p><p>When·a·socket·in·<code·class="inline">{active, N}</code>·mode·(see·<a·href="inet.html#setopts/2"><code·class="inline">inet:setopts/2</code></a>·for·details), |
| 939 | transitions·to·passive·(<code·class="inline">{active, false}</code>)·mode·(<code·class="inline">N</code>·counts·down·to·<code·class="inline">0</code>), | 939 | transitions·to·passive·(<code·class="inline">{active, false}</code>)·mode·(<code·class="inline">N</code>·counts·down·to·<code·class="inline">0</code>), |
| 940 | the·controlling·process·is·notified·by·a·message·on·this·form:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="6 | 940 | the·controlling·process·is·notified·by·a·message·on·this·form:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="6882954583-1">{</span><span·class="ss">udp_passive</span><span·class="p">,</span><span·class="err"> </span><span·class="n">Socket</span><span·class="p"·data-group-id="6882954583-1">}</span></code></pre><p>If·the·OS·protocol·stack·reports·an·error·for·the·socket,·the·following |
| 941 | message·is·sent·to·the·controlling·process:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 941 | message·is·sent·to·the·controlling·process:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="0439982028-1">{</span><span·class="ss">udp_error</span><span·class="p">,</span><span·class="err"> </span><span·class="n">Socket</span><span·class="p">,</span><span·class="err"> </span><span·class="n">Reason</span><span·class="p"·data-group-id="0439982028-1">}</span></code></pre><p><code·class="inline">Reason</code>·is·mostly·a·<a·href="inet.html#posix-error-codes">POSIX·Error·Code</a>.</p><p>If·the·socket·is·in·<em>passive·mode</em>·(not·in·an·<em>active·mode</em>),·received·data |
| 942 | can·be·retrieved·with·the<code·class="inline">recv/2,3</code>](<a·href="#recv/2"><code·class="inline">recv/2</code></a>)·calls.·Note·that·incoming | 942 | can·be·retrieved·with·the<code·class="inline">recv/2,3</code>](<a·href="#recv/2"><code·class="inline">recv/2</code></a>)·calls.·Note·that·incoming |
| 943 | UDP·packets·that·are·longer·than·the·receive·buffer·option·specifies | 943 | UDP·packets·that·are·longer·than·the·receive·buffer·option·specifies |
| 944 | can·be·truncated·without·warning.</p><p>The·default·value·for·the·receive·buffer·option·is·<code·class="inline">{recbuf, 8192}</code>.</p> | 944 | can·be·truncated·without·warning.</p><p>The·default·value·for·the·receive·buffer·option·is·<code·class="inline">{recbuf, 8192}</code>.</p> |
| 945 | ··</section> | 945 | ··</section> |
| 946 | </section> | 946 | </section> |
| 947 | <section·class="detail"·id="recv/2"> | 947 | <section·class="detail"·id="recv/2"> |
| Offset 128, 15 lines modified | Offset 128, 15 lines modified | ||
| 128 | ····<section·id="moduledoc"> | 128 | ····<section·id="moduledoc"> |
| 129 | <p>Grouping·nodes·to·global·name·registration·groups.</p><p>This·module·makes·it·possible·to·partition·the·nodes·of·a·system·into·<em>global | 129 | <p>Grouping·nodes·to·global·name·registration·groups.</p><p>This·module·makes·it·possible·to·partition·the·nodes·of·a·system·into·<em>global |
| 130 | groups</em>.·Each·global·group·has·its·own·global·namespace,·see·<a·href="global.html"><code·class="inline">global</code></a>.</p><p>The·main·advantage·of·dividing·systems·into·global·groups·is·that·the·background | 130 | groups</em>.·Each·global·group·has·its·own·global·namespace,·see·<a·href="global.html"><code·class="inline">global</code></a>.</p><p>The·main·advantage·of·dividing·systems·into·global·groups·is·that·the·background |
| 131 | load·decreases·while·the·number·of·nodes·to·be·updated·is·reduced·when | 131 | load·decreases·while·the·number·of·nodes·to·be·updated·is·reduced·when |
| 132 | manipulating·globally·registered·names.</p><p>The·Kernel·configuration·parameter·<a·href="kernel_app.html#global_groups"><code·class="inline">global_groups</code></a> | 132 | manipulating·globally·registered·names.</p><p>The·Kernel·configuration·parameter·<a·href="kernel_app.html#global_groups"><code·class="inline">global_groups</code></a> |
| 133 | defines·the·global·groups:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 133 | defines·the·global·groups:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="9102786452-1">{</span><span·class="ss">global_groups</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9102786452-2">[</span><span·class="n">GroupTuple</span><span·class="w">·</span><span·class="p">:</span><span·class="p"[·...·truncated·by·diffoscope;·len:·268,·SHA:·a7048f8aa5030530ae8e22c7aac09e6122efb9968e7e646798f4f17c9526a531·...·]-1">}</span></code></pre><p>For·the·processes·and·nodes·to·run·smoothly·using·the·global·group |
| 134 | functionality,·the·following·criteria·must·be·met:</p><ul><li>An·instance·of·the·global·group·server,·<code·class="inline">global_group</code>,·must·be·running·on | 134 | functionality,·the·following·criteria·must·be·met:</p><ul><li>An·instance·of·the·global·group·server,·<code·class="inline">global_group</code>,·must·be·running·on |
| 135 | each·node.·The·processes·are·automatically·started·and·synchronized·when·a | 135 | each·node.·The·processes·are·automatically·started·and·synchronized·when·a |
| 136 | node·is·started.</li><li>All·involved·nodes·must·agree·on·the·global·group·definition,·otherwise·the | 136 | node·is·started.</li><li>All·involved·nodes·must·agree·on·the·global·group·definition,·otherwise·the |
| 137 | behavior·of·the·system·is·undefined.</li><li><em>All</em>·nodes·in·the·system·must·belong·to·exactly·one·global·group.</li></ul><p>In·the·following·descriptions,·a·<em>group·node</em>·is·a·node·belonging·to·the·same | 137 | behavior·of·the·system·is·undefined.</li><li><em>All</em>·nodes·in·the·system·must·belong·to·exactly·one·global·group.</li></ul><p>In·the·following·descriptions,·a·<em>group·node</em>·is·a·node·belonging·to·the·same |
| 138 | global·group·as·the·local·node.</p><h2·id="module-notes"·class="section-heading"> | 138 | global·group·as·the·local·node.</p><h2·id="module-notes"·class="section-heading"> |
| 139 | ··<a·href="#module-notes"·class="hover-link"> | 139 | ··<a·href="#module-notes"·class="hover-link"> |
| 140 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 140 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 147, 27 lines modified | Offset 147, 27 lines modified | ||
| 147 | inet_default_listen_options·'[{delay_send,true}]'</code></pre><p><strong>Please·note</strong>·that·the·default·option·<code·class="inline">{active,·true}</code>·cannot·be·changed, | 147 | inet_default_listen_options·'[{delay_send,true}]'</code></pre><p><strong>Please·note</strong>·that·the·default·option·<code·class="inline">{active,·true}</code>·cannot·be·changed, |
| 148 | for·internal·implementation·reasons.</p><p>Addresses·as·inputs·to·functions·can·be·either·a·string·or·a·tuple. | 148 | for·internal·implementation·reasons.</p><p>Addresses·as·inputs·to·functions·can·be·either·a·string·or·a·tuple. |
| 149 | For·example,·the·IP·address·150.236.20.73·can·be·passed·to | 149 | For·example,·the·IP·address·150.236.20.73·can·be·passed·to |
| 150 | <a·href="#gethostbyaddr/1"><code·class="inline">gethostbyaddr/1</code></a>,·either·as·a·string·<code·class="inline">"150.236.20.73"</code> | 150 | <a·href="#gethostbyaddr/1"><code·class="inline">gethostbyaddr/1</code></a>,·either·as·a·string·<code·class="inline">"150.236.20.73"</code> |
| 151 | or·as·a·tuple·<code·class="inline">{150, 236, 20, 73}</code>.</p><p><em>IPv4·address·examples:</em></p><pre><code·class="text">Address··········ip_address() | 151 | or·as·a·tuple·<code·class="inline">{150, 236, 20, 73}</code>.</p><p><em>IPv4·address·examples:</em></p><pre><code·class="text">Address··········ip_address() |
| 152 | -------··········------------ | 152 | -------··········------------ |
| 153 | 127.0.0.1········{127,0,0,1} | 153 | 127.0.0.1········{127,0,0,1} |
| 154 | 192.168.42.2·····{192,168,42,2}</code></pre><p><em>IPv6·address·examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Address</span><span·class="w">··········</span><span·class="nf">ip_address</span><span·class="p"·data-group-id=" | 154 | 192.168.42.2·····{192,168,42,2}</code></pre><p><em>IPv6·address·examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Address</span><span·class="w">··········</span><span·class="nf">ip_address</span><span·class="p"·data-group-id="1177295477-1">(</span><span·class="p"·data-group-id="1177295477-1">)</span><span·class="w"> |
| 155 | </span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">-</span><span·class="w">··········</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="w"> | 155 | </span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">-</span><span·class="w">··········</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="o">--</span><span·class="w"> |
| 156 | </span><span·class="p">:</span><span·class="p">:</span><span·class="mi">1</span><span·class="w">·············</span><span·class="p"·data-group-id=" | 156 | </span><span·class="p">:</span><span·class="p">:</span><span·class="mi">1</span><span·class="w">·············</span><span·class="p"·data-group-id="1177295477-2">{</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="[·...·truncated·by·diffoscope;·len:·174,·SHA:·185a1d62b64008b697b2466aa566241af46c30526b14820d46cceed6b0c4a01f·...·]7-2">}</span><span·class="w"> |
| 157 | </span><span·class="p">:</span><span·class="p">:</span><span·class="mf">192.168</span><span·class="p">.</span><span·class="mf">42.2</span><span·class="w">··</span><span·class="p"·data-group-id=" | 157 | </span><span·class="p">:</span><span·class="p">:</span><span·class="mf">192.168</span><span·class="p">.</span><span·class="mf">42.2</span><span·class="w">··</span><span·class="p"·data-group-id="1177295477-3">{</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="[·...·truncated·by·diffoscope;·len:·791,·SHA:·d4db5bd467253aad9fdee7254849b45802fd8f1dcb905a522895f04a77706aec·...·]7-3">}</span><span·class="w"> |
| 158 | </span><span·class="p">:</span><span·class="p">:</span><span·class="n">FFFF</span><span·class="p">:</span><span·class="mf">192.168</span><span·class="p">.</span><span·class="mf">42.2</span><span·class="w"> | 158 | </span><span·class="p">:</span><span·class="p">:</span><span·class="n">FFFF</span><span·class="p">:</span><span·class="mf">192.168</span><span·class="p">.</span><span·class="mf">42.2</span><span·class="w"> |
| 159 | ················</span><span·class="p"·data-group-id=" | 159 | ················</span><span·class="p"·data-group-id="1177295477-6">{</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="[·...·truncated·by·diffoscope;·len:·797,·SHA:·fed930405bc8f64303432956df676f8a823093c247f3e5151714fc34e6408eda·...·]7-6">}</span><span·class="w"> |
| 160 | </span><span·class="mi">3</span><span·class="nc">ffe</span><span·class="p">:</span><span·class="nc">b80</span><span·class="p">:</span><span·class="mi">1</span><span·class="nc">f8d</span><span·class="p">:</span><span·class="mi">2</span><span·class="p">:</span><span·class="mi">204</span><span·class="p">:</span><span·class="nc">acff</span><span·class="p">:</span><span·class="nc">fe17</span><span·class="p">:</span><span·class="ss">bf38</span><span·class="w"> | 160 | </span><span·class="mi">3</span><span·class="nc">ffe</span><span·class="p">:</span><span·class="nc">b80</span><span·class="p">:</span><span·class="mi">1</span><span·class="nc">f8d</span><span·class="p">:</span><span·class="mi">2</span><span·class="p">:</span><span·class="mi">204</span><span·class="p">:</span><span·class="nc">acff</span><span·class="p">:</span><span·class="nc">fe17</span><span·class="p">:</span><span·class="ss">bf38</span><span·class="w"> |
| 161 | ················</span><span·class="p"·data-group-id=" | 161 | ················</span><span·class="p"·data-group-id="1177295477-9">{</span><span·class="mi">16#3ffe</span><span·class="p">,</span><span·class="mi">16#b80</span><span·class="p">,</span><span·class="mi">16#1f8d</span><span·class="p">,</span><span·class="mi">16#2</span><span·class="p">,</span><span·class="mi">1[·...·truncated·by·diffoscope;·len:·217,·SHA:·939616edb8238342110b0a5858912fd77fd7ba365dff25f12337d28c6fc8d47e·...·]7-9">}</span><span·class="w"> |
| 162 | </span><span·class="nc">fe80</span><span·class="p">:</span><span·class="p">:</span><span·class="mi">204</span><span·class="p">:</span><span·class="nc">acff</span><span·class="p">:</span><span·class="nc">fe17</span><span·class="p">:</span><span·class="ss">bf38</span><span·class="w"> | 162 | </span><span·class="nc">fe80</span><span·class="p">:</span><span·class="p">:</span><span·class="mi">204</span><span·class="p">:</span><span·class="nc">acff</span><span·class="p">:</span><span·class="nc">fe17</span><span·class="p">:</span><span·class="ss">bf38</span><span·class="w"> |
| 163 | ················</span><span·class="p"·data-group-id=" | 163 | ················</span><span·class="p"·data-group-id="1177295477-10">{</span><span·class="mi">16#fe80</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">16#204</span><[·...·truncated·by·diffoscope;·len:·657,·SHA:·a98c085442088d695658d16d64ceb68ebdd807f9a066d9c67cb2bce76c11bfa9·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 164 | </span><span·class="p"·data-group-id=" | 164 | </span><span·class="p"·data-group-id="5651093317-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="5651093317-3">{</span><span·class="mi">192</span><span·class="p">,</span><span·class="mi">168</span><span·class="p">,</span><span·class="mi">42</span><sp[·...·truncated·by·diffoscope;·len:·140,·SHA:·e22dcf7852aa87490d6a761da407d61f31c138f0d648319f075d188015a60463·...·]-2">}</span><span·class="gp·unselectable"> |
| 165 | 2>·</span><span·class="nc">inet</span><span·class="p">:</span><span·class="nf">parse_address</span><span·class="p"·data-group-id=" | 165 | 2>·</span><span·class="nc">inet</span><span·class="p">:</span><span·class="nf">parse_address</span><span·class="p"·data-group-id="5651093317-4">(</span><span·class="s">"::FFFF:192.168.42.2"</span><span·class="p"·data-group-id="5651093317-4">)</span><span·class="p">.</span><span·class="w"> |
| 166 | </span><span·class="p"·data-group-id=" | 166 | </span><span·class="p"·data-group-id="5651093317-5">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="5651093317-6">{</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·cl[·...·truncated·by·diffoscope;·len:·343,·SHA:·68c8c4ff99d5c6743d357eb71c16a3f66d66d7ac5c7e10db1355399d0da5d175·...·]-5">}</span></code></pre><h2·id="module-posix-error-codes"·class="section-heading"> |
| 167 | ··<a·href="#module-posix-error-codes"·class="hover-link"> | 167 | ··<a·href="#module-posix-error-codes"·class="hover-link"> |
| 168 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 168 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 169 | ··</a> | 169 | ··</a> |
| 170 | ··<span·class="text"><a·href=""·id="posix-error-codes"></a>·POSIX·Error·Codes</span> | 170 | ··<span·class="text"><a·href=""·id="posix-error-codes"></a>·POSIX·Error·Codes</span> |
| 171 | </h2> | 171 | </h2> |
| 172 | <ul><li><code·class="inline">e2big</code>·-·Too·long·argument·list</li><li><code·class="inline">eacces</code>·-·Permission·denied</li><li><code·class="inline">eaddrinuse</code>·-·Address·already·in·use</li><li><code·class="inline">eaddrnotavail</code>·-·Cannot·assign·requested·address</li><li><code·class="inline">eadv</code>·-·Advertise·error</li><li><code·class="inline">eafnosupport</code>·-·Address·family·not·supported·by·protocol·family</li><li><code·class="inline">eagain</code>·-·Resource·temporarily·unavailable</li><li><code·class="inline">ealign</code>·-·EALIGN</li><li><code·class="inline">ealready</code>·-·Operation·already·in·progress</li><li><code·class="inline">ebade</code>·-·Bad·exchange·descriptor</li><li><code·class="inline">ebadf</code>·-·Bad·file·number</li><li><code·class="inline">ebadfd</code>·-·File·descriptor·in·bad·state</li><li><code·class="inline">ebadmsg</code>·-·Not·a·data·message</li><li><code·class="inline">ebadr</code>·-·Bad·request·descriptor</li><li><code·class="inline">ebadrpc</code>·-·Bad·RPC·structure</li><li><code·class="inline">ebadrqc</code>·-·Bad·request·code</li><li><code·class="inline">ebadslt</code>·-·Invalid·slot</li><li><code·class="inline">ebfont</code>·-·Bad·font·file·format</li><li><code·class="inline">ebusy</code>·-·File·busy</li><li><code·class="inline">echild</code>·-·No·children</li><li><code·class="inline">echrng</code>·-·Channel·number·out·of·range</li><li><code·class="inline">ecomm</code>·-·Communication·error·on·send</li><li><code·class="inline">econnaborted</code>·-·Software·caused·connection·abort</li><li><code·class="inline">econnrefused</code>·-·Connection·refused</li><li><code·class="inline">econnreset</code>·-·Connection·reset·by·peer</li><li><code·class="inline">edeadlk</code>·-·Resource·deadlock·avoided</li><li><code·class="inline">edeadlock</code>·-·Resource·deadlock·avoided</li><li><code·class="inline">edestaddrreq</code>·-·Destination·address·required</li><li><code·class="inline">edirty</code>·-·Mounting·a·dirty·fs·without·force</li><li><code·class="inline">edom</code>·-·Math·argument·out·of·range</li><li><code·class="inline">edotdot</code>·-·Cross·mount·point</li><li><code·class="inline">edquot</code>·-·Disk·quota·exceeded</li><li><code·class="inline">eduppkg</code>·-·Duplicate·package·name</li><li><code·class="inline">eexist</code>·-·File·already·exists</li><li><code·class="inline">efault</code>·-·Bad·address·in·system·call·argument</li><li><code·class="inline">efbig</code>·-·File·too·large</li><li><code·class="inline">ehostdown</code>·-·Host·is·down</li><li><code·class="inline">ehostunreach</code>·-·Host·is·unreachable</li><li><code·class="inline">eidrm</code>·-·Identifier·removed</li><li><code·class="inline">einit</code>·-·Initialization·error</li><li><code·class="inline">einprogress</code>·-·Operation·now·in·progress</li><li><code·class="inline">eintr</code>·-·Interrupted·system·call</li><li><code·class="inline">einval</code>·-·Invalid·argument</li><li><code·class="inline">eio</code>·-·I/O·error</li><li><code·class="inline">eisconn</code>·-·Socket·is·already·connected</li><li><code·class="inline">eisdir</code>·-·Illegal·operation·on·a·directory</li><li><code·class="inline">eisnam</code>·-·Is·a·named·file</li><li><code·class="inline">el2hlt</code>·-·Level·2·halted</li><li><code·class="inline">el2nsync</code>·-·Level·2·not·synchronized</li><li><code·class="inline">el3hlt</code>·-·Level·3·halted</li><li><code·class="inline">el3rst</code>·-·Level·3·reset</li><li><code·class="inline">elbin</code>·-·ELBIN</li><li><code·class="inline">elibacc</code>·-·Cannot·access·a·needed·shared·library</li><li><code·class="inline">elibbad</code>·-·Accessing·a·corrupted·shared·library</li><li><code·class="inline">elibexec</code>·-·Cannot·exec·a·shared·library·directly</li><li><code·class="inline">elibmax</code>·-·Attempting·to·link·in·more·shared·libraries·than·system·limit</li><li><code·class="inline">elibscn</code>·-·<code·class="inline">.lib</code>·section·in·<code·class="inline">a.out</code>·corrupted</li><li><code·class="inline">elnrng</code>·-·Link·number·out·of·range</li><li><code·class="inline">eloop</code>·-·Too·many·levels·of·symbolic·links</li><li><code·class="inline">emfile</code>·-·Too·many·open·files</li><li><code·class="inline">emlink</code>·-·Too·many·links</li><li><code·class="inline">emsgsize</code>·-·Message·too·long</li><li><code·class="inline">emultihop</code>·-·Multihop·attempted</li><li><code·class="inline">enametoolong</code>·-·Filename·too·long</li><li><code·class="inline">enavail</code>·-·Unavailable</li><li><code·class="inline">enet</code>·-·ENET</li><li><code·class="inline">enetdown</code>·-·Network·is·down</li><li><code·class="inline">enetreset</code>·-·Network·dropped·connection·on·reset</li><li><code·class="inline">enetunreach</code>·-·Network·is·unreachable</li><li><code·class="inline">enfile</code>·-·File·table·overflow</li><li><code·class="inline">enoano</code>·-·Anode·table·overflow</li><li><code·class="inline">enobufs</code>·-·No·buffer·space·available</li><li><code·class="inline">enocsi</code>·-·No·CSI·structure·available</li><li><code·class="inline">enodata</code>·-·No·data·available</li><li><code·class="inline">enodev</code>·-·No·such·device</li><li><code·class="inline">enoent</code>·-·No·such·file·or·directory</li><li><code·class="inline">enoexec</code>·-·Exec·format·error</li><li><code·class="inline">enolck</code>·-·No·locks·available</li><li><code·class="inline">enolink</code>·-·Link·has·been·severed</li><li><code·class="inline">enomem</code>·-·Not·enough·memory</li><li><code·class="inline">enomsg</code>·-·No·message·of·desired·type</li><li><code·class="inline">enonet</code>·-·Machine·is·not·on·the·network</li><li><code·class="inline">enopkg</code>·-·Package·not·installed</li><li><code·class="inline">enoprotoopt</code>·-·Bad·protocol·option</li><li><code·class="inline">enospc</code>·-·No·space·left·on·device</li><li><code·class="inline">enosr</code>·-·Out·of·stream·resources·or·not·a·stream·device</li><li><code·class="inline">enosym</code>·-·Unresolved·symbol·name</li><li><code·class="inline">enosys</code>·-·Function·not·implemented</li><li><code·class="inline">enotblk</code>·-·Block·device·required</li><li><code·class="inline">enotconn</code>·-·Socket·is·not·connected</li><li><code·class="inline">enotdir</code>·-·Not·a·directory</li><li><code·class="inline">enotempty</code>·-·Directory·not·empty</li><li><code·class="inline">enotnam</code>·-·Not·a·named·file</li><li><code·class="inline">enotsock</code>·-·Socket·operation·on·non-socket</li><li><code·class="inline">enotsup</code>·-·Operation·not·supported</li><li><code·class="inline">enotty</code>·-·Inappropriate·device·for·<code·class="inline">ioctl</code></li><li><code·class="inline">enotuniq</code>·-·Name·not·unique·on·network</li><li><code·class="inline">enxio</code>·-·No·such·device·or·address</li><li><code·class="inline">eopnotsupp</code>·-·Operation·not·supported·on·socket</li><li><code·class="inline">eperm</code>·-·Not·owner</li><li><code·class="inline">epfnosupport</code>·-·Protocol·family·not·supported</li><li><code·class="inline">epipe</code>·-·Broken·pipe</li><li><code·class="inline">eproclim</code>·-·Too·many·processes</li><li><code·class="inline">eprocunavail</code>·-·Bad·procedure·for·program</li><li><code·class="inline">eprogmismatch</code>·-·Wrong·program·version</li><li><code·class="inline">eprogunavail</code>·-·RPC·program·unavailable</li><li><code·class="inline">eproto</code>·-·Protocol·error</li><li><code·class="inline">eprotonosupport</code>·-·Protocol·not·supported</li><li><code·class="inline">eprototype</code>·-·Wrong·protocol·type·for·socket</li><li><code·class="inline">erange</code>·-·Math·result·unrepresentable</li><li><code·class="inline">erefused</code>·-·EREFUSED</li><li><code·class="inline">eremchg</code>·-·Remote·address·changed</li><li><code·class="inline">eremdev</code>·-·Remote·device</li><li><code·class="inline">eremote</code>·-·Pathname·hit·remote·filesystem</li><li><code·class="inline">eremoteio</code>·-·Remote·I/O·error</li><li><code·class="inline">eremoterelease</code>·-·EREMOTERELEASE</li><li><code·class="inline">erofs</code>·-·Read-only·filesystem</li><li><code·class="inline">erpcmismatch</code>·-·Wrong·RPC·version</li><li><code·class="inline">erremote</code>·-·Object·is·remote</li><li><code·class="inline">eshutdown</code>·-·Cannot·send·after·socket·shutdown</li><li><code·class="inline">esocktnosupport</code>·-·Socket·type·not·supported</li><li><code·class="inline">espipe</code>·-·Invalid·seek</li><li><code·class="inline">esrch</code>·-·No·such·process</li><li><code·class="inline">esrmnt</code>·-·Srmount·error</li><li><code·class="inline">estale</code>·-·Stale·remote·file·handle</li><li><code·class="inline">esuccess</code>·-·Error·0</li><li><code·class="inline">etime</code>·-·Timer·expired</li><li><code·class="inline">etimedout</code>·-·Connection·timed·out</li><li><code·class="inline">etoomanyrefs</code>·-·Too·many·references</li><li><code·class="inline">etxtbsy</code>·-·Text·file·or·pseudo-device·busy</li><li><code·class="inline">euclean</code>·-·Structure·needs·cleaning</li><li><code·class="inline">eunatch</code>·-·Protocol·driver·not·attached</li><li><code·class="inline">eusers</code>·-·Too·many·users</li><li><code·class="inline">eversion</code>·-·Version·mismatch</li><li><code·class="inline">ewouldblock</code>·-·Operation·would·block</li><li><code·class="inline">exdev</code>·-·Cross-device·link</li><li><code·class="inline">exfull</code>·-·Message·tables·full</li><li><code·class="inline">nxdomain</code>·-·Hostname·or·domain·name·cannot·be·found</li></ul> | 172 | <ul><li><code·class="inline">e2big</code>·-·Too·long·argument·list</li><li><code·class="inline">eacces</code>·-·Permission·denied</li><li><code·class="inline">eaddrinuse</code>·-·Address·already·in·use</li><li><code·class="inline">eaddrnotavail</code>·-·Cannot·assign·requested·address</li><li><code·class="inline">eadv</code>·-·Advertise·error</li><li><code·class="inline">eafnosupport</code>·-·Address·family·not·supported·by·protocol·family</li><li><code·class="inline">eagain</code>·-·Resource·temporarily·unavailable</li><li><code·class="inline">ealign</code>·-·EALIGN</li><li><code·class="inline">ealready</code>·-·Operation·already·in·progress</li><li><code·class="inline">ebade</code>·-·Bad·exchange·descriptor</li><li><code·class="inline">ebadf</code>·-·Bad·file·number</li><li><code·class="inline">ebadfd</code>·-·File·descriptor·in·bad·state</li><li><code·class="inline">ebadmsg</code>·-·Not·a·data·message</li><li><code·class="inline">ebadr</code>·-·Bad·request·descriptor</li><li><code·class="inline">ebadrpc</code>·-·Bad·RPC·structure</li><li><code·class="inline">ebadrqc</code>·-·Bad·request·code</li><li><code·class="inline">ebadslt</code>·-·Invalid·slot</li><li><code·class="inline">ebfont</code>·-·Bad·font·file·format</li><li><code·class="inline">ebusy</code>·-·File·busy</li><li><code·class="inline">echild</code>·-·No·children</li><li><code·class="inline">echrng</code>·-·Channel·number·out·of·range</li><li><code·class="inline">ecomm</code>·-·Communication·error·on·send</li><li><code·class="inline">econnaborted</code>·-·Software·caused·connection·abort</li><li><code·class="inline">econnrefused</code>·-·Connection·refused</li><li><code·class="inline">econnreset</code>·-·Connection·reset·by·peer</li><li><code·class="inline">edeadlk</code>·-·Resource·deadlock·avoided</li><li><code·class="inline">edeadlock</code>·-·Resource·deadlock·avoided</li><li><code·class="inline">edestaddrreq</code>·-·Destination·address·required</li><li><code·class="inline">edirty</code>·-·Mounting·a·dirty·fs·without·force</li><li><code·class="inline">edom</code>·-·Math·argument·out·of·range</li><li><code·class="inline">edotdot</code>·-·Cross·mount·point</li><li><code·class="inline">edquot</code>·-·Disk·quota·exceeded</li><li><code·class="inline">eduppkg</code>·-·Duplicate·package·name</li><li><code·class="inline">eexist</code>·-·File·already·exists</li><li><code·class="inline">efault</code>·-·Bad·address·in·system·call·argument</li><li><code·class="inline">efbig</code>·-·File·too·large</li><li><code·class="inline">ehostdown</code>·-·Host·is·down</li><li><code·class="inline">ehostunreach</code>·-·Host·is·unreachable</li><li><code·class="inline">eidrm</code>·-·Identifier·removed</li><li><code·class="inline">einit</code>·-·Initialization·error</li><li><code·class="inline">einprogress</code>·-·Operation·now·in·progress</li><li><code·class="inline">eintr</code>·-·Interrupted·system·call</li><li><code·class="inline">einval</code>·-·Invalid·argument</li><li><code·class="inline">eio</code>·-·I/O·error</li><li><code·class="inline">eisconn</code>·-·Socket·is·already·connected</li><li><code·class="inline">eisdir</code>·-·Illegal·operation·on·a·directory</li><li><code·class="inline">eisnam</code>·-·Is·a·named·file</li><li><code·class="inline">el2hlt</code>·-·Level·2·halted</li><li><code·class="inline">el2nsync</code>·-·Level·2·not·synchronized</li><li><code·class="inline">el3hlt</code>·-·Level·3·halted</li><li><code·class="inline">el3rst</code>·-·Level·3·reset</li><li><code·class="inline">elbin</code>·-·ELBIN</li><li><code·class="inline">elibacc</code>·-·Cannot·access·a·needed·shared·library</li><li><code·class="inline">elibbad</code>·-·Accessing·a·corrupted·shared·library</li><li><code·class="inline">elibexec</code>·-·Cannot·exec·a·shared·library·directly</li><li><code·class="inline">elibmax</code>·-·Attempting·to·link·in·more·shared·libraries·than·system·limit</li><li><code·class="inline">elibscn</code>·-·<code·class="inline">.lib</code>·section·in·<code·class="inline">a.out</code>·corrupted</li><li><code·class="inline">elnrng</code>·-·Link·number·out·of·range</li><li><code·class="inline">eloop</code>·-·Too·many·levels·of·symbolic·links</li><li><code·class="inline">emfile</code>·-·Too·many·open·files</li><li><code·class="inline">emlink</code>·-·Too·many·links</li><li><code·class="inline">emsgsize</code>·-·Message·too·long</li><li><code·class="inline">emultihop</code>·-·Multihop·attempted</li><li><code·class="inline">enametoolong</code>·-·Filename·too·long</li><li><code·class="inline">enavail</code>·-·Unavailable</li><li><code·class="inline">enet</code>·-·ENET</li><li><code·class="inline">enetdown</code>·-·Network·is·down</li><li><code·class="inline">enetreset</code>·-·Network·dropped·connection·on·reset</li><li><code·class="inline">enetunreach</code>·-·Network·is·unreachable</li><li><code·class="inline">enfile</code>·-·File·table·overflow</li><li><code·class="inline">enoano</code>·-·Anode·table·overflow</li><li><code·class="inline">enobufs</code>·-·No·buffer·space·available</li><li><code·class="inline">enocsi</code>·-·No·CSI·structure·available</li><li><code·class="inline">enodata</code>·-·No·data·available</li><li><code·class="inline">enodev</code>·-·No·such·device</li><li><code·class="inline">enoent</code>·-·No·such·file·or·directory</li><li><code·class="inline">enoexec</code>·-·Exec·format·error</li><li><code·class="inline">enolck</code>·-·No·locks·available</li><li><code·class="inline">enolink</code>·-·Link·has·been·severed</li><li><code·class="inline">enomem</code>·-·Not·enough·memory</li><li><code·class="inline">enomsg</code>·-·No·message·of·desired·type</li><li><code·class="inline">enonet</code>·-·Machine·is·not·on·the·network</li><li><code·class="inline">enopkg</code>·-·Package·not·installed</li><li><code·class="inline">enoprotoopt</code>·-·Bad·protocol·option</li><li><code·class="inline">enospc</code>·-·No·space·left·on·device</li><li><code·class="inline">enosr</code>·-·Out·of·stream·resources·or·not·a·stream·device</li><li><code·class="inline">enosym</code>·-·Unresolved·symbol·name</li><li><code·class="inline">enosys</code>·-·Function·not·implemented</li><li><code·class="inline">enotblk</code>·-·Block·device·required</li><li><code·class="inline">enotconn</code>·-·Socket·is·not·connected</li><li><code·class="inline">enotdir</code>·-·Not·a·directory</li><li><code·class="inline">enotempty</code>·-·Directory·not·empty</li><li><code·class="inline">enotnam</code>·-·Not·a·named·file</li><li><code·class="inline">enotsock</code>·-·Socket·operation·on·non-socket</li><li><code·class="inline">enotsup</code>·-·Operation·not·supported</li><li><code·class="inline">enotty</code>·-·Inappropriate·device·for·<code·class="inline">ioctl</code></li><li><code·class="inline">enotuniq</code>·-·Name·not·unique·on·network</li><li><code·class="inline">enxio</code>·-·No·such·device·or·address</li><li><code·class="inline">eopnotsupp</code>·-·Operation·not·supported·on·socket</li><li><code·class="inline">eperm</code>·-·Not·owner</li><li><code·class="inline">epfnosupport</code>·-·Protocol·family·not·supported</li><li><code·class="inline">epipe</code>·-·Broken·pipe</li><li><code·class="inline">eproclim</code>·-·Too·many·processes</li><li><code·class="inline">eprocunavail</code>·-·Bad·procedure·for·program</li><li><code·class="inline">eprogmismatch</code>·-·Wrong·program·version</li><li><code·class="inline">eprogunavail</code>·-·RPC·program·unavailable</li><li><code·class="inline">eproto</code>·-·Protocol·error</li><li><code·class="inline">eprotonosupport</code>·-·Protocol·not·supported</li><li><code·class="inline">eprototype</code>·-·Wrong·protocol·type·for·socket</li><li><code·class="inline">erange</code>·-·Math·result·unrepresentable</li><li><code·class="inline">erefused</code>·-·EREFUSED</li><li><code·class="inline">eremchg</code>·-·Remote·address·changed</li><li><code·class="inline">eremdev</code>·-·Remote·device</li><li><code·class="inline">eremote</code>·-·Pathname·hit·remote·filesystem</li><li><code·class="inline">eremoteio</code>·-·Remote·I/O·error</li><li><code·class="inline">eremoterelease</code>·-·EREMOTERELEASE</li><li><code·class="inline">erofs</code>·-·Read-only·filesystem</li><li><code·class="inline">erpcmismatch</code>·-·Wrong·RPC·version</li><li><code·class="inline">erremote</code>·-·Object·is·remote</li><li><code·class="inline">eshutdown</code>·-·Cannot·send·after·socket·shutdown</li><li><code·class="inline">esocktnosupport</code>·-·Socket·type·not·supported</li><li><code·class="inline">espipe</code>·-·Invalid·seek</li><li><code·class="inline">esrch</code>·-·No·such·process</li><li><code·class="inline">esrmnt</code>·-·Srmount·error</li><li><code·class="inline">estale</code>·-·Stale·remote·file·handle</li><li><code·class="inline">esuccess</code>·-·Error·0</li><li><code·class="inline">etime</code>·-·Timer·expired</li><li><code·class="inline">etimedout</code>·-·Connection·timed·out</li><li><code·class="inline">etoomanyrefs</code>·-·Too·many·references</li><li><code·class="inline">etxtbsy</code>·-·Text·file·or·pseudo-device·busy</li><li><code·class="inline">euclean</code>·-·Structure·needs·cleaning</li><li><code·class="inline">eunatch</code>·-·Protocol·driver·not·attached</li><li><code·class="inline">eusers</code>·-·Too·many·users</li><li><code·class="inline">eversion</code>·-·Version·mismatch</li><li><code·class="inline">ewouldblock</code>·-·Operation·would·block</li><li><code·class="inline">exdev</code>·-·Cross-device·link</li><li><code·class="inline">exfull</code>·-·Message·tables·full</li><li><code·class="inline">nxdomain</code>·-·Hostname·or·domain·name·cannot·be·found</li></ul> |
| 173 | ····</section> | 173 | ····</section> |
| Offset 953, 15 lines modified | Offset 953, 15 lines modified | ||
| 953 | ···················h_addrtype·::·inet·|·inet6, | 953 | ···················h_addrtype·::·inet·|·inet6, |
| 954 | ···················h_length·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0">non_neg_integer</a>(), | 954 | ···················h_length·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0">non_neg_integer</a>(), |
| 955 | ···················h_addr_list·::·[<a·href="inet.html#t:ip_address/0">inet:ip_address</a>()]}.</pre> | 955 | ···················h_addr_list·::·[<a·href="inet.html#t:ip_address/0">inet:ip_address</a>()]}.</pre> |
| 956 | ······</div> | 956 | ······</div> |
| 957 | <p>A·record·describing·a·host;·name·and·address.</p><p>Corresponds·to·the·<code·class="inline">C</code>:·<code·class="inline">struct hostent</code>·as·returned·by·for·example | 957 | <p>A·record·describing·a·host;·name·and·address.</p><p>Corresponds·to·the·<code·class="inline">C</code>:·<code·class="inline">struct hostent</code>·as·returned·by·for·example |
| 958 | <code·class="inline">gethostbyname(3)</code>.</p><p>The·record·is·defined·in·the·Kernel·include·file·<code·class="inline">"inet.hrl"</code>.</p><p>Add·the·following·directive·to·the·module:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id=" | 958 | <code·class="inline">gethostbyname(3)</code>.</p><p>The·record·is·defined·in·the·Kernel·include·file·<code·class="inline">"inet.hrl"</code>.</p><p>Add·the·following·directive·to·the·module:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="0044696382-1">(</span><span·class="s">"kernel/include/inet.hrl"</span><span·class="p"·data-group-id="0044696382-1">)</span><span·class="p">.</span></code></pre> |
| 959 | ··</section> | 959 | ··</section> |
| 960 | </section> | 960 | </section> |
| 961 | <section·class="detail"·id="t:hostname/0"> | 961 | <section·class="detail"·id="t:hostname/0"> |
| 962 | ··<div·class="detail-header"> | 962 | ··<div·class="detail-header"> |
| 963 | ····<a·href="#t:hostname/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·type"> | 963 | ····<a·href="#t:hostname/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·type"> |
| 964 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 964 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 2050, 17 lines modified | Offset 2050, 17 lines modified | ||
| 2050 | coded·in·native·endianness.</p><p>Asking·for·and·inspecting·raw·socket·options·require·low-level·information·about | 2050 | coded·in·native·endianness.</p><p>Asking·for·and·inspecting·raw·socket·options·require·low-level·information·about |
| 2051 | the·current·operating·system·and·TCP·stack.</p><p><em>Example:</em></p><p>Consider·a·Linux·machine·where·option·<code·class="inline">TCP_INFO</code>·can·be·used·to·collect·TCP | 2051 | the·current·operating·system·and·TCP·stack.</p><p><em>Example:</em></p><p>Consider·a·Linux·machine·where·option·<code·class="inline">TCP_INFO</code>·can·be·used·to·collect·TCP |
| 2052 | statistics·for·a·socket.·Assume·you·are·interested·in·field·<code·class="inline">tcpi_sacked</code>·of | 2052 | statistics·for·a·socket.·Assume·you·are·interested·in·field·<code·class="inline">tcpi_sacked</code>·of |
| 2053 | <code·class="inline">struct·tcp_info</code>·filled·in·when·asking·for·<code·class="inline">TCP_INFO</code>.·To·be·able·to·access | 2053 | <code·class="inline">struct·tcp_info</code>·filled·in·when·asking·for·<code·class="inline">TCP_INFO</code>.·To·be·able·to·access |
| 2054 | this·information,·you·need·to·know·the·following:</p><ul><li>The·numeric·value·of·protocol·level·<code·class="inline">IPPROTO_TCP</code></li><li>The·numeric·value·of·option·<code·class="inline">TCP_INFO</code></li><li>The·size·of·<code·class="inline">struct·tcp_info</code></li><li>The·size·and·offset·of·the·specific·field</li></ul><p>By·inspecting·the·headers·or·writing·a·small·C·program,·it·is·found·that | 2054 | this·information,·you·need·to·know·the·following:</p><ul><li>The·numeric·value·of·protocol·level·<code·class="inline">IPPROTO_TCP</code></li><li>The·numeric·value·of·option·<code·class="inline">TCP_INFO</code></li><li>The·size·of·<code·class="inline">struct·tcp_info</code></li><li>The·size·and·offset·of·the·specific·field</li></ul><p>By·inspecting·the·headers·or·writing·a·small·C·program,·it·is·found·that |
| 2055 | <code·class="inline">IPPROTO_TCP</code>·is·6,·<code·class="inline">TCP_INFO</code>·is·11,·the·structure·size·is·92·(bytes),·the | 2055 | <code·class="inline">IPPROTO_TCP</code>·is·6,·<code·class="inline">TCP_INFO</code>·is·11,·the·structure·size·is·92·(bytes),·the |
| 2056 | offset·of·<code·class="inline">tcpi_sacked</code>·is·28·bytes,·and·the·value·is·a·32-bit·integer.·The | 2056 | offset·of·<code·class="inline">tcpi_sacked</code>·is·28·bytes,·and·the·value·is·a·32-bit·integer.·The |
| 2057 | following·code·can·be·used·to·retrieve·the·value:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">get_tcpi_sacked</span><span·class="p"·data-group-id="9567003393-1">(</span><span·class="n">Sock</span><span·class="p"·data-group-id="9567003393-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | ||
| 2058 | 2057 | following·code·can·be·used·to·retrieve·the·value:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">get_tcpi_sacked</span><span·class="p"·data-group-id="8363805127-1">(</span><span·class="n">Sock</span><span·class="p"·data-group-id="83638[·...·truncated·by·diffoscope;·len:·62,·SHA:·1c4a96f4ecd88cda5c353bc1e60aa37478f91d5d3c004dbd775c8a4c6559fa17·...·]</span><span·class="w"> | |
| 2058 | ····</span><span·class="p"·data-group-id="8363805127-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="8363805127-3">[</span><span·class="p"·data-group-id="8363805127-4">{</span><span·class="ss">raw</span><span·class="p">,</span><span·class="p">_</span><span·class="p">,</span><span·class="p">_</span><span·class="p">,</span><span·class="n">Info</span><span·class="p"·data-group-id="8363805127-4">}</span><span·class="p"·data-group-id="8363805127-3">]</span><span·class="p"·data-group-id="8363805127-2">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">inet</span><span·class="p">:</span><span·class="nf">getopts</span><span·class="p"·data-group-id="8363805127-5">(</span><span·class="n">Sock</span><span·class="p">,</span><span·class="p"·data-group-id="8363805127-6">[</span><span·class="p"·data-group-id="8363805127-7">{</span><span·class="ss">raw</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">11</span><span·class="p">,</span><span·class="mi">92</span><span·class="p"·data-group-id="8363805127-7">}</span><span·class="p"·data-group-id="8363805127-6">]</span><span·class="p"·data-group-id="8363805127-5">)</span><span·class="p">,</span><span·class="w"> | ||
| 2059 | ····</span><span·class="p"·data-group-id=" | 2059 | ····</span><span·class="p"·data-group-id="8363805127-8"><<</span><span·class="p">_</span><span·class="p">:</span><span·class="mi">28</span><span·class="o">/</span><span·class="ss">binary</span><span·class="p">,</span><span·class="n">TcpiSacked</span><span·class="p">:</span><span·class="mi">3[·...·truncated·by·diffoscope;·len:·205,·SHA:·5b20457e9fe89099e1a11f54de1c7f776c1f78d5291aaddfa08b8d47bcd3f1b2·...·]-8">>></span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Info</span><span·class="p">,</span><span·class="w"> |
| 2060 | ····</span><span·class="n">TcpiSacked</span><span·class="p">.</span></code></pre><p>Preferably,·you·would·check·the·machine·type,·the·operating·system,·and·the | 2060 | ····</span><span·class="n">TcpiSacked</span><span·class="p">.</span></code></pre><p>Preferably,·you·would·check·the·machine·type,·the·operating·system,·and·the |
| 2061 | Kernel·version·before·executing·anything·similar·to·this·code.</p> | 2061 | Kernel·version·before·executing·anything·similar·to·this·code.</p> |
| 2062 | ··</section> | 2062 | ··</section> |
| 2063 | </section> | 2063 | </section> |
| 2064 | <section·class="detail"·id="getstat/1"> | 2064 | <section·class="detail"·id="getstat/1"> |
| 2065 | ··<div·class="detail-header"> | 2065 | ··<div·class="detail-header"> |
| Offset 2381, 15 lines modified | Offset 2381, 15 lines modified | ||
| 2381 | ······<div·class="specs"> | 2381 | ······<div·class="specs"> |
| 2382 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·monitor(Socket)·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:reference/0">reference</a>()·when·Socket·::·<a·href="#t:socket/0">socket</a>().</pre> | 2382 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·monitor(Socket)·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:reference/0">reference</a>()·when·Socket·::·<a·href="#t:socket/0">socket</a>().</pre> |
| 2383 | ······</div> | 2383 | ······</div> |
| 2384 | <p>Start·a·socket·monitor.</p><p>If·the·<code·class="inline">Socket</code>·to·monitor·doesn't·exist·or·when·the·monitor·is·triggered, | 2384 | <p>Start·a·socket·monitor.</p><p>If·the·<code·class="inline">Socket</code>·to·monitor·doesn't·exist·or·when·the·monitor·is·triggered, |
| 2385 | a·<code·class="inline">'DOWN'</code>·message·is·sent·that·has·the·following·pattern:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">» ····</span><span·class="p"·data-group-id=" | 2385 | a·<code·class="inline">'DOWN'</code>·message·is·sent·that·has·the·following·pattern:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">» ····</span><span·class="p"·data-group-id="5563295416-1">{</span><span·class="ss">'DOWN'</span><span·class="p">,</span><span·class="w">·</span><span·class="n">MonitorRef</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Type</span><span·class="p">,</span><span·class="w">[·...·truncated·by·diffoscope;·len:·153,·SHA:·3e59ec8e072a49c2c4f83420c8b10444deb9c115a5403cd7b321b3acbf960e3e·...·]-1">}</span></code></pre><ul><li><p><strong><code·class="inline">MonitorRef</code></strong>·-·The·return·value·from·this·function.</p></li><li><p><strong><code·class="inline">Type</code></strong>·-·The·type·of·socket,·can·be·one·of·the·following |
| 2386 | <a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:atom/0"><code·class="inline">atom/0</code></a>s:·<code·class="inline">port</code>·or·<code·class="inline">socket</code>.</p></li><li><p><strong><code·class="inline">Object</code></strong>·-·The·monitored·entity,·the·socket,·which·triggered·the·event.</p></li><li><p><strong><code·class="inline">Info</code></strong>·-·Either·the·termination·reason·of·the·socket·or·<code·class="inline">nosock</code> | 2386 | <a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:atom/0"><code·class="inline">atom/0</code></a>s:·<code·class="inline">port</code>·or·<code·class="inline">socket</code>.</p></li><li><p><strong><code·class="inline">Object</code></strong>·-·The·monitored·entity,·the·socket,·which·triggered·the·event.</p></li><li><p><strong><code·class="inline">Info</code></strong>·-·Either·the·termination·reason·of·the·socket·or·<code·class="inline">nosock</code> |
| 2387 | (the·<code·class="inline">Socket</code>·did·not·exist·when·this·function·was·called).</p></li></ul><p>Making·several·calls·to·<a·href="#monitor/1"><code·class="inline">inet:monitor/1</code></a>·for·the·same·<code·class="inline">Socket</code> | 2387 | (the·<code·class="inline">Socket</code>·did·not·exist·when·this·function·was·called).</p></li></ul><p>Making·several·calls·to·<a·href="#monitor/1"><code·class="inline">inet:monitor/1</code></a>·for·the·same·<code·class="inline">Socket</code> |
| 2388 | is·not·an·error;·one·monitor·is·created·per·call.</p><p>The·monitor·is·triggered·when·the·socket·is·closed·in·any·way·such·as | 2388 | is·not·an·error;·one·monitor·is·created·per·call.</p><p>The·monitor·is·triggered·when·the·socket·is·closed·in·any·way·such·as |
| 2389 | an·API·call,·remote·end·close,·closed·by·signal·when·owner·exits,·...</p> | 2389 | an·API·call,·remote·end·close,·closed·by·signal·when·owner·exits,·...</p> |
| 2390 | ··</section> | 2390 | ··</section> |
| 2391 | </section> | 2391 | </section> |
| 2392 | <section·class="detail"·id="ntoa/1"> | 2392 | <section·class="detail"·id="ntoa/1"> |
| Offset 175, 23 lines modified | Offset 175, 23 lines modified | ||
| 175 | <p>The·following·data·types·concern·the·DNS·client:</p><h2·id="module-example"·class="section-heading"> | 175 | <p>The·following·data·types·concern·the·DNS·client:</p><h2·id="module-example"·class="section-heading"> |
| 176 | ··<a·href="#module-example"·class="hover-link"> | 176 | ··<a·href="#module-example"·class="hover-link"> |
| 177 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 177 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 178 | ··</a> | 178 | ··</a> |
| 179 | ··<span·class="text">Example</span> | 179 | ··<span·class="text">Example</span> |
| 180 | </h2> | 180 | </h2> |
| 181 | <p>This·access·functions·example·shows·how·<a·href="#lookup/3"><code·class="inline">lookup/3</code></a>·can·be·implemented·using | 181 | <p>This·access·functions·example·shows·how·<a·href="#lookup/3"><code·class="inline">lookup/3</code></a>·can·be·implemented·using |
| 182 | <a·href="#resolve/3"><code·class="inline">resolve/3</code></a>·from·outside·the·module:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">example_lookup</span><span·class="p"·data-group-id=" | 182 | <a·href="#resolve/3"><code·class="inline">resolve/3</code></a>·from·outside·the·module:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">example_lookup</span><span·class="p"·data-group-id="3088077452-1">(</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Class</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Type</span><span·class="p"·data-group-id="3088077452-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 183 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">inet_res</span><span·class="p">:</span><span·class="nf">resolve</span><span·class="p"·data-group-id=" | 183 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">inet_res</span><span·class="p">:</span><span·class="nf">resolve</span><span·class="p"·data-group-id="3088077452-2">(</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Class</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Type</span><span·class="p"·data-group-id="3088077452-2">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 184 | ········</span><span·class="p"·data-group-id=" | 184 | ········</span><span·class="p"·data-group-id="3088077452-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">Msg</span><span·class="p"·data-group-id="3088077452-3">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 185 | ············</span><span·class="p"·data-group-id=" | 185 | ············</span><span·class="p"·data-group-id="3088077452-4">[</span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">rr</span><span·class="p"·data-group-id="3088077452-5">(</span><span·class="n">RR</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">data</spa[·...·truncated·by·diffoscope;·len:·43,·SHA:·6df8cd5dabdb497637eb0ac45893e6887f76b7fab11f825758aa59303b7c9645·...·]-5">)</span><span·class="w"> |
| 186 | ·············</span><span·class="p">||</span><span·class="w">·</span><span·class="n">RR</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">msg</span><span·class="p"·data-group-id=" | 186 | ·············</span><span·class="p">||</span><span·class="w">·</span><span·class="n">RR</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">msg</span><span·class="p"·data-group-id="3088077452-6">(</span><span·class="n">Msg</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">anlist</span><span·class="p"·data-group-id="3088077452-6">)</span><span·class="p">,</span><span·class="w"> |
| 187 | ·················</span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">rr</span><span·class="p"·data-group-id=" | 187 | ·················</span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">rr</span><span·class="p"·data-group-id="3088077452-7">(</span><span·class="n">RR</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">type</span><span·class="p"·data-group-id="3088077452-7">)</span><span·class="w">·</span><span·class="o">=:=</span><span·class="w">·</span><span·class="n">Type</span><span·class="p">,</span><span·class="w"> |
| 188 | ·················</span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">rr</span><span·class="p"·data-group-id=" | 188 | ·················</span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">rr</span><span·class="p"·data-group-id="3088077452-8">(</span><span·class="n">RR</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">class</span><span·class="p"·data-group-id="3088077452-8">)</span><span·class="w">·</span><span·class="o">=:=</span><span·class="w">·</span><span[·...·truncated·by·diffoscope;·len:·64,·SHA:·2ea2a95c9dace32137d7192a99c0cbcf71f57f59afb94b60684f4a405bd6dd6c·...·]-4">]</span><span·class="p">;</span><span·class="w"> |
| 189 | ········</span><span·class="p"·data-group-id=" | 189 | ········</span><span·class="p"·data-group-id="3088077452-9">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="p">_</span><span·class="p"·data-group-id="3088077452-9">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 190 | ············</span><span·class="p"·data-group-id=" | 190 | ············</span><span·class="p"·data-group-id="3088077452-10">[</span><span·class="p"·data-group-id="3088077452-10">]</span><span·class="w"> |
| 191 | ·····</span><span·class="k">end</span><span·class="p">.</span></code></pre> | 191 | ·····</span><span·class="k">end</span><span·class="p">.</span></code></pre> |
| 192 | ····</section> | 192 | ····</section> |
| 193 | </div> | 193 | </div> |
| 194 | ··<section·id="summary"·class="details-list"> | 194 | ··<section·id="summary"·class="details-list"> |
| 195 | ····<h1·class="section-heading"> | 195 | ····<h1·class="section-heading"> |
| Offset 584, 65 lines modified | Offset 584, 65 lines modified | ||
| 584 | ··········<pre·translate="no"><span·class="attribute">-type</span>·dns_msg()·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> | 584 | ··········<pre·translate="no"><span·class="attribute">-type</span>·dns_msg()·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 585 | ······</div> | 585 | ······</div> |
| 586 | <p>A·DNS·message.</p><p>This·is·the·start·of·a·hierarchy·of·opaque·data·structures·that·can·be | 586 | <p>A·DNS·message.</p><p>This·is·the·start·of·a·hierarchy·of·opaque·data·structures·that·can·be |
| 587 | examined·with·access·functions·in·<code·class="inline">inet_dns</code>,·which·return·lists·of | 587 | examined·with·access·functions·in·<code·class="inline">inet_dns</code>,·which·return·lists·of |
| 588 | <code·class="inline">{Field,Value}</code>·tuples.·The·arity·2·functions·return·the·value | 588 | <code·class="inline">{Field,Value}</code>·tuples.·The·arity·2·functions·return·the·value |
| 589 | for·a·specified·field.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">dns_msg</span><span·class="p"·data-group-id=" | 589 | for·a·specified·field.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">dns_msg</span><span·class="p"·data-group-id="1433751148-1">(</span><span·class="p"·data-group-id="1433751148-1">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">DnsMsg</span><span·class="w"> |
| 590 | ····</span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">msg</span><span·class="p"·data-group-id=" | 590 | ····</span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">msg</span><span·class="p"·data-group-id="1433751148-2">(</span><span·class="n">DnsMsg</span><span·class="p"·data-group-id="1433751148-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 591 | ········</span><span·class="p"·data-group-id=" | 591 | ········</span><span·class="p"·data-group-id="1433751148-3">[</span><span·class="w">·</span><span·class="p"·data-group-id="1433751148-4">{</span><span·class="ss">header</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">dns_header</span><span·class="p"·data-group-id="1433751148-5">[·...·truncated·by·diffoscope;·len:·102,·SHA:·0aae97abe6b4a36bba0167dfae3023db4e99ccfd3c63917ee915441f20eff472·...·]-4">}</span><span·class="w"> |
| 592 | ········</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id=" | 592 | ········</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="1433751148-6">{</span><span·class="ss">qdlist</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">dns_query</span><span·class="p"·data-group-id="1433751148-7">(</span><span·class="p"·data-group-id="1433751148-7">)</span><span·class="p"·d[·...·truncated·by·diffoscope;·len:·24,·SHA:·c45ffd05ade1a57540ddc7d3d31d4ca5d8fa7d906a9058b9e3e3011363d2ed31·...·]-6">}</span><span·class="w"> |
| 593 | ········</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id=" | 593 | ········</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="1433751148-8">{</span><span·class="ss">anlist</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">dns_rr</span><span·class="p"·data-group-id="1433751148-9">(</span><span·class="p"·data-group-id="1433751148-9">)</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·21,·SHA:·a4ed8e1efc89ad7986750163aeac7ebaae7765b7f80b8f968f51da20a7b46600·...·]-8">}</span><span·class="w"> |
| 594 | ········</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id=" | 594 | ········</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="1433751148-10">{</span><span·class="ss">nslist</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">dns_rr</span><span·class="p"·data-group-id="1433751148-11">(</span><span·class="p"·data-group-id="1433751148-11">)</span><span·class="p"·d[·...·truncated·by·diffoscope;·len:·24,·SHA:·c45ffd05ade1a57540ddc7d3d31d4ca5d8fa7d906a9058b9e3e3011363d2ed31·...·]-10">}</span><span·class="w"> |
| 595 | ········</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id=" | 595 | ········</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="1433751148-12">{</span><span·class="ss">arlist</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">dns_rr</span><span·class="p"·data-group-id="1433751148-13">(</span><span·class="p"·data-group-id="1433751148-13">)</span><span·class="p"·d[·...·truncated·by·diffoscope;·len:·102,·SHA:·327bfb5e63127b9106a7ecd8cc7650087f9419c5e72ba1c70deb9d6187a3a606·...·]-3">]</span><span·class="w"> |
| 596 | ····</span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">msg</span><span·class="p"·data-group-id=" | 596 | ····</span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">msg</span><span·class="p"·data-group-id="1433751148-14">(</span><span·class="n">DnsMsg</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">header</span><span·class="p"·data-group-id="1433751148-14">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</s[·...·truncated·by·diffoscope;·len:·133,·SHA:·b97e6bb2a296d327d42a184d28c7957d74b9631f50ac9318e9d185fbd359352d·...·]-15">)</span><span·class="w">·</span><span·class="c1">%·for·example</span><span·class="w"> |
| 597 | ····</span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">msg</span><span·class="p"·data-group-id=" | 597 | ····</span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">msg</span><span·class="p"·data-group-id="1433751148-16">(</span><span·class="n">DnsMsg</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Field</span><span·class="p"·data-group-id="1433751148-16">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Value</span><span·class="w"> |
| 598 | </span><span·class="nf">dns_header</span><span·class="p"·data-group-id=" | 598 | </span><span·class="nf">dns_header</span><span·class="p"·data-group-id="1433751148-17">(</span><span·class="p"·data-group-id="1433751148-17">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">DnsHeader</span><span·class="w"> |
| 599 | ····</span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">header</span><span·class="p"·data-group-id=" | 599 | ····</span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">header</span><span·class="p"·data-group-id="1433751148-18">(</span><span·class="n">DnsHeader</span><span·class="p"·data-group-id="1433751148-18">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 600 | ········</span><span·class="p"·data-group-id=" | 600 | ········</span><span·class="p"·data-group-id="1433751148-19">[</span><span·class="w">·</span><span·class="p"·data-group-id="1433751148-20">{</span><span·class="ss">id</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="1433751148-21">(</s[·...·truncated·by·diffoscope;·len:·99,·SHA:·6f6e356334624ca4d408c4f2155ac51be0e39bb4033ae22a17edcd3fc500781e·...·]-20">}</span><span·class="w"> |
| 601 | ········</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id=" | 601 | ········</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="1433751148-22">{</span><span·class="ss">qr</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">boolean</span><span·class="p"·data-group-id="1433751148-23">(</span><span·class="p"·data-group-id="1433751148-23">)</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·21,·SHA:·a4ed8e1efc89ad7986750163aeac7ebaae7765b7f80b8f968f51da20a7b46600·...·]-22">}</span><span·class="w"> |
| 602 | ········</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id=" | 602 | ········</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="1433751148-24">{</span><span·class="ss">opcode</span><span·class="p">,</span><span·class="w">·</span><span·class="k">query</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">iquery</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·329,·SHA:·6d13b364fbe38ad29189f0a5ec5d31b3145be38e84e903333529f207f733efcf·...·]-24">}</span><span·class="w"> |
| 603 | ········</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id=" | 603 | ········</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="1433751148-26">{</span><span·class="ss">aa</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">boolean</span><span·class="p"·data-group-id="1433751148-27">(</span><span·class="p"·data-group-id="1433751148-27">)</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·21,·SHA:·a4ed8e1efc89ad7986750163aeac7ebaae7765b7f80b8f968f51da20a7b46600·...·]-26">}</span><span·class="w"> |
| 604 | ········</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id=" | 604 | ········</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="1433751148-28">{</span><span·class="ss">tc</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">boolean</span><span·class="p"·data-group-id="1433751148-29">(</span><span·class="p"·data-group-id="1433751148-29">)</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·21,·SHA:·a4ed8e1efc89ad7986750163aeac7ebaae7765b7f80b8f968f51da20a7b46600·...·]-28">}</span><span·class="w"> |
| 605 | ········</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id=" | 605 | ········</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="1433751148-30">{</span><span·class="ss">rd</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">boolean</span><span·class="p"·data-group-id="1433751148-31">(</span><span·class="p"·data-group-id="1433751148-31">)</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·21,·SHA:·a4ed8e1efc89ad7986750163aeac7ebaae7765b7f80b8f968f51da20a7b46600·...·]-30">}</span><span·class="w"> |
| 606 | ········</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id=" | 606 | ········</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="1433751148-32">{</span><span·class="ss">ra</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">boolean</span><span·class="p"·data-group-id="1433751148-33">(</span><span·class="p"·data-group-id="1433751148-33">)</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·21,·SHA:·a4ed8e1efc89ad7986750163aeac7ebaae7765b7f80b8f968f51da20a7b46600·...·]-32">}</span><span·class="w"> |
| 607 | ········</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id=" | 607 | ········</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="1433751148-34">{</span><span·class="ss">pr</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">boolean</span><span·class="p"·data-group-id="1433751148-35">(</span><span·class="p"·data-group-id="1433751148-35">)</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·21,·SHA:·a4ed8e1efc89ad7986750163aeac7ebaae7765b7f80b8f968f51da20a7b46600·...·]-34">}</span><span·class="w"> |
| 608 | ········</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id=" | 608 | ········</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="1433751148-36">{</span><span·class="ss">rcode</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="1433751148-37">(</span><span·class="mi">0</span><span·class="p">.</span><span·class="p">.</spa[·...·truncated·by·diffoscope;·len:·201,·SHA:·9356f7a09d8020d231d5dc1ed499c4e78e867edf6af7c821617b701fcca725a4·...·]-19">]</span><span·class="w"> |
| 609 | ····</span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">header</span><span·class="p"·data-group-id=" | 609 | ····</span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">header</span><span·class="p"·data-group-id="1433751148-38">(</span><span·class="n">DnsHeader</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Field</span><span·class="p"·data-group-id="1433751148-38">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Value</span><span·class="w"> |
| 610 | </span><span·class="nf">query_type</span><span·class="p"·data-group-id=" | 610 | </span><span·class="nf">query_type</span><span·class="p"·data-group-id="1433751148-39">(</span><span·class="p"·data-group-id="1433751148-39">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">axfr</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·c[·...·truncated·by·diffoscope;·len:·424,·SHA:·6b194f593398e8198d60063668ab4c6674c22c0e653b1f4a2c52471cfc2c02fb·...·]-40">)</span><span·class="w"> |
| 611 | </span><span·class="nf">dns_query</span><span·class="p"·data-group-id=" | 611 | </span><span·class="nf">dns_query</span><span·class="p"·data-group-id="1433751148-41">(</span><span·class="p"·data-group-id="1433751148-41">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">DnsQuery</span><span·class="w"> |
| 612 | ····</span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">dns_query</span><span·class="p"·data-group-id=" | 612 | ····</span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">dns_query</span><span·class="p"·data-group-id="1433751148-42">(</span><span·class="n">DnsQuery</span><span·class="p"·data-group-id="1433751148-42">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 613 | ········</span><span·class="p"·data-group-id=" | 613 | ········</span><span·class="p"·data-group-id="1433751148-43">[</span><span·class="w">·</span><span·class="p"·data-group-id="1433751148-44">{</span><span·class="ss">domain</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">dns_name</span><span·class="p"·data-group-id="1433751148-45"[·...·truncated·by·diffoscope;·len:·104,·SHA:·b4522a2704eba15f2420937a0ede6ee32779bd7642fce23e07d712cada03fe02·...·]-44">}</span><span·class="w"> |
| 614 | ········</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id=" | 614 | ········</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="1433751148-46">{</span><span·class="ss">type</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">query_type</span><span·class="p"·data-group-id="1433751148-47">(</span><span·class="p"·data-group-id="1433751148-47">)</span><span·class="p"[·...·truncated·by·diffoscope;·len:·26,·SHA:·1f6bcc40e75c35115044fd7d797709973944ca91dedefafed272dc1e0c0ac4b6·...·]-46">}</span><span·class="w"> |
| 615 | ········</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id=" | 615 | ········</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="1433751148-48">{</span><span·class="ss">class</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">dns_class</span><span·class="p"·data-group-id="1433751148-49">(</span><span·class="p"·data-group-id="1433751148-49">)</span><span·class="p"[·...·truncated·by·diffoscope;·len:·104,·SHA:·564faee2ecd45419e2937d6507403f95576872f9c3c6199d8a76375c3ca6e272·...·]-43">]</span><span·class="w"> |
| 616 | ····</span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">dns_query</span><span·class="p"·data-group-id=" | 616 | ····</span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">dns_query</span><span·class="p"·data-group-id="1433751148-50">(</span><span·class="n">DnsQuery</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Field</span><span·class="p"·data-group-id="1433751148-50">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Value</span><span·class="w"> |
| 617 | </span><span·class="nf">dns_rr</span><span·class="p"·data-group-id=" | 617 | </span><span·class="nf">dns_rr</span><span·class="p"·data-group-id="1433751148-51">(</span><span·class="p"·data-group-id="1433751148-51">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">DnsRr</span><span·class="w"> |
| 618 | ····</span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">rr</span><span·class="p"·data-group-id=" | 618 | ····</span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">rr</span><span·class="p"·data-group-id="1433751148-52">(</span><span·class="n">DnsRr</span><span·class="p"·data-group-id="1433751148-52">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">DnsRrFields</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="n">DnsRrOptFields</span><span·class="w"> |
| 619 | ····</span><span·class="n">DnsRrFields</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 619 | ····</span><span·class="n">DnsRrFields</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="1433751148-53">[</span><span·class="w">·</span><span·class="p"·data-group-id="1433751148-54">{</span><span·class="ss">domain</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">dns_name</span><span·class="p"·data-group-id="1433751148-55"[·...·truncated·by·diffoscope;·len:·104,·SHA:·5bfca759c51d9d321b14465ff1fc92921d8357c521a8d8c90f711758998ce4d8·...·]-54">}</span><span·class="w"> |
| 620 | ··················</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id=" | 620 | ··················</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="1433751148-56">{</span><span·class="ss">type</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">dns_rr_type</span><span·class="p"·data-group-id="1433751148-57">(</span><span·class="p"·data-group-id="1433751148-57">)</span><span·class="p[·...·truncated·by·diffoscope;·len:·27,·SHA:·8bd8d0e2c5317d0dae3c3b8cb1bb90ff48608aae80c5f5cc9665527cfd665196·...·]-56">}</span><span·class="w"> |
| 621 | ··················</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id=" | 621 | ··················</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="1433751148-58">{</span><span·class="ss">class</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">dns_class</span><span·class="p"·data-group-id="1433751148-59">(</span><span·class="p"·data-group-id="1433751148-59">)</span><span·class="p"[·...·truncated·by·diffoscope;·len:·26,·SHA:·1f6bcc40e75c35115044fd7d797709973944ca91dedefafed272dc1e0c0ac4b6·...·]-58">}</span><span·class="w"> |
| 622 | ··················</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id=" | 622 | ··················</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="1433751148-60">{</span><span·class="ss">ttl</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="1433751148-61">(</span><span·class="p"·data-group-id="1433751148-61">)</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·22,·SHA:·8f90c0e0bef95008ba7676b60adf6e884f08cdb548458002237e21fe07776096·...·]-60">}</span><span·class="w"> |
| 623 | ··················</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id=" | 623 | ··················</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="1433751148-62">{</span><span·class="ss">data</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">dns_data</span><span·class="p"·data-group-id="1433751148-63">(</span><span·class="p"·data-group-id="1433751148-63">)</span><span·class="p"·d[·...·truncated·by·diffoscope;·len:·102,·SHA:·636b0b6eefc2517ed6b6ee1ec6fad2676e8e4b6d495859194368f050d4f1f3d1·...·]-53">]</span><span·class="w"> |
| 624 | ····</span><span·class="n">DnsRrOptFields</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 624 | ····</span><span·class="n">DnsRrOptFields</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="1433751148-64">[</span><span·class="w">·</span><span·class="p"·data-group-id="1433751148-65">{</span><span·class="ss">domain</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">dns_name</span><span·class="p"·data-group-id="1433751148-66"[·...·truncated·by·diffoscope;·len:·104,·SHA:·ab4d0475e373896402293c8f80c038761c7be03af13557ad2030993cdde76892·...·]-65">}</span><span·class="w"> |
| 625 | ·····················</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id=" | 625 | ·····················</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="1433751148-67">{</span><span·class="ss">type</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">opt</span><span·class="p"·data-group-id="1433751148-67">}</span><span·class="w"> |
| 626 | ·····················</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id=" | 626 | ·····················</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="1433751148-68">{</span><span·class="ss">udp_payload_size</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="1433751148-69">(</span><span·class="p"·data-group-id="1433751148-69">)</span><span·[·...·truncated·by·diffoscope;·len:·35,·SHA:·539601dace5924f61156fe1837ce615b7e8eb71ef5196e0a72ad0042572117a5·...·]-68">}</span><span·class="w"> |
| 627 | ·····················</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id=" | 627 | ·····················</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="1433751148-70">{</span><span·class="ss">ext_rcode</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="1433751148-71">(</span><span·class="p"·data-group-id="1433751148-71">)</span><span·class="[·...·truncated·by·diffoscope;·len:·28,·SHA:·a0dbf2155a9c67985e0b4c8714f1e61b1c4eb71ad812de25f49f723627ef5d4f·...·]-70">}</span><span·class="w"> |
| 628 | ·····················</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id=" | 628 | ·····················</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="1433751148-72">{</span><span·class="ss">version</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="1433751148-73">(</span><span·class="p"·data-group-id="1433751148-73">)</span><span·class="p"[·...·truncated·by·diffoscope;·len:·26,·SHA:·1f6bcc40e75c35115044fd7d797709973944ca91dedefafed272dc1e0c0ac4b6·...·]-72">}</span><span·class="w"> |
| 629 | ·····················</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id=" | 629 | ·····················</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="1433751148-74">{</span><span·class="ss">z</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="1433751148-75">(</span><span·class="p"·data-group-id="1433751148-75">)</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·20,·SHA:·edacd654c33f55f2afd3b23d298152385ae6913735c39c05d6dbd14ef214206f·...·]-74">}</span><span·class="w"> |
| 630 | ·····················</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id=" | 630 | ·····················</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="1433751148-76">{</span><span·class="ss">data</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">dns_data</span><span·class="p"·data-group-id="1433751148-77">(</span><span·class="p"·data-group-id="1433751148-77">)</span><span·class="p"·d[·...·truncated·by·diffoscope;·len:·102,·SHA:·a980521c15eb48b976bcb0f59d6d4bdeacb350fc7138f7730e56c11a109568bb·...·]-64">]</span><span·class="w"> |
| 631 | ····</span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">rr</span><span·class="p"·data-group-id=" | 631 | ····</span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">rr</span><span·class="p"·data-group-id="1433751148-78">(</span><span·class="n">DnsRr</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Field</span><span·class="p"·data-group-id="1433751148-78">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span[·...·truncated·by·diffoscope;·len:·471,·SHA:·569b973320722bb2ca283522b384d44f6c86f5d3c1c1921339802c45f3a77aa9·...·]9-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">msg</span><span·class="p">;</span><span·class="w"> |
| 632 | </span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">record_type</span><span·class="p"·data-group-id=" | 632 | </span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">record_type</span><span·class="p"·data-group-id="1089468449-3">(</span><span·class="nf">dns_header</span><span·class="p"·data-group-id="1089468449-4">(</span><span·class="p"·data-group-id="1089468449-4">)</span><span·class="p"·data-group-id="1089468449-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">header</span><span·class="p">;</span><span·class="w"> |
| 633 | </span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">record_type</span><span·class="p"·data-group-id=" | 633 | </span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">record_type</span><span·class="p"·data-group-id="1089468449-5">(</span><span·class="nf">dns_query</span><span·class="p"·data-group-id="1089468449-6">(</span><span·class="p"·data-group-id="1089468449-6">)</span><span·class="p"·data-group-id="1089468449-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">dns_query</span><span·class="p">;</span><span·class="w"> |
| 634 | </span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">record_type</span><span·class="p"·data-group-id=" | 634 | </span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">record_type</span><span·class="p"·data-group-id="1089468449-7">(</span><span·class="nf">dns_rr</span><span·class="p"·data-group-id="1089468449-8">(</span><span·class="p"·data-group-id="1089468449-8">)</span><span·class="p"·data-group-id="1089468449-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">rr</span><span·class="p">;</span><span·class="w"> |
| 635 | </span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">record_type</span><span·class="p"·data-group-id=" | 635 | </span><span·class="nc">inet_dns</span><span·class="p">:</span><span·class="nf">record_type</span><span·class="p"·data-group-id="1089468449-9">(</span><span·class="p">_</span><span·class="p"·data-group-id="1089468449-9">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">undefined</span><span·class="p">.</span></code></pre><p>So,·<code·class="inline">inet_dns:(inet_dns:record_type(X))(X)</code>·converts·any·of·these·data |
| 636 | structures·into·a·<code·class="inline">{Field,Value}</code>·list.</p> | 636 | structures·into·a·<code·class="inline">{Field,Value}</code>·list.</p> |
| 637 | ··</section> | 637 | ··</section> |
| 638 | </section> | 638 | </section> |
| 639 | <section·class="detail"·id="t:dns_name/0"> | 639 | <section·class="detail"·id="t:dns_name/0"> |
| 640 | ··<div·class="detail-header"> | 640 | ··<div·class="detail-header"> |
| 641 | ····<a·href="#t:dns_name/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·type"> | 641 | ····<a·href="#t:dns_name/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·type"> |
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| 3 | ?rw-r--r--··6.1·unx····16348·bx·defN·25-Mar-18·0 | 3 | ?rw-r--r--··6.1·unx····16348·bx·defN·25-Mar-18·08:45·OEBPS/wrap_log_reader.xhtml |
| 4 | ?rw-r--r--··6.1·unx···118444·bx·defN·25-Mar-18·0 | 4 | ?rw-r--r--··6.1·unx···118444·bx·defN·25-Mar-18·08:45·OEBPS/trace.xhtml |
| 5 | ?rw-r--r--··6.1·unx······718·bx·defN·25-Mar-18·0 | 5 | ?rw-r--r--··6.1·unx······718·bx·defN·25-Mar-18·08:45·OEBPS/title.xhtml |
| 6 | ?rw-r--r--··6.1·unx····97056·bx·defN·25-Mar-18·0 | 6 | ?rw-r--r--··6.1·unx····97056·bx·defN·25-Mar-18·08:45·OEBPS/socket_usage.xhtml |
| 7 | ?rw-r--r--··6.1·unx···385544·bx·defN·25-Mar-18·0 | 7 | ?rw-r--r--··6.1·unx···385544·bx·defN·25-Mar-18·08:45·OEBPS/socket.xhtml |
| 8 | ?rw-r--r--··6.1·unx····65084·bx·defN·25-Mar-18·0 | 8 | ?rw-r--r--··6.1·unx····65084·bx·defN·25-Mar-18·08:45·OEBPS/seq_trace.xhtml |
| 9 | ?rw-r--r--··6.1·unx····65181·bx·defN·25-Mar-18·0 | 9 | ?rw-r--r--··6.1·unx····65181·bx·defN·25-Mar-18·08:45·OEBPS/rpc.xhtml |
| 10 | ?rw-r--r--··6.1·unx····34976·bx·defN·25-Mar-18·0 | 10 | ?rw-r--r--··6.1·unx····34976·bx·defN·25-Mar-18·08:45·OEBPS/pg.xhtml |
| 11 | ?rw-r--r--··6.1·unx····55177·bx·defN·25-Mar-18·0 | 11 | ?rw-r--r--··6.1·unx····55177·bx·defN·25-Mar-18·08:45·OEBPS/os.xhtml |
| 12 | ?rw-r--r--··6.1·unx···405857·bx·defN·25-Mar-18·0 | 12 | ?rw-r--r--··6.1·unx···405857·bx·defN·25-Mar-18·08:45·OEBPS/notes.xhtml |
| 13 | ?rw-r--r--··6.1·unx····59183·bx·defN·25-Mar-18·0 | 13 | ?rw-r--r--··6.1·unx····59183·bx·defN·25-Mar-18·08:45·OEBPS/net_kernel.xhtml |
| 14 | ?rw-r--r--··6.1·unx····20333·bx·defN·25-Mar-18·0 | 14 | ?rw-r--r--··6.1·unx····20333·bx·defN·25-Mar-18·08:45·OEBPS/net_adm.xhtml |
| 15 | ?rw-r--r--··6.1·unx····46156·bx·defN·25-Mar-18·0 | 15 | ?rw-r--r--··6.1·unx····46156·bx·defN·25-Mar-18·08:45·OEBPS/net.xhtml |
| 16 | ?rw-r--r--··6.1·unx·····3820·bx·defN·25-Mar-18·0 | 16 | ?rw-r--r--··6.1·unx·····3820·bx·defN·25-Mar-18·08:45·OEBPS/nav.xhtml |
| 17 | ?rw-r--r--··6.1·unx····13441·bx·defN·25-Mar-18·0 | 17 | ?rw-r--r--··6.1·unx····13441·bx·defN·25-Mar-18·08:45·OEBPS/logger_std_h.xhtml |
| 18 | ?rw-r--r--··6.1·unx····19736·bx·defN·25-Mar-18·0 | 18 | ?rw-r--r--··6.1·unx····19736·bx·defN·25-Mar-18·08:45·OEBPS/logger_handler.xhtml |
| 19 | ?rw-r--r--··6.1·unx····27987·bx·defN·25-Mar-18·0 | 19 | ?rw-r--r--··6.1·unx····27987·bx·defN·25-Mar-18·08:45·OEBPS/logger_formatter.xhtml |
| 20 | ?rw-r--r--··6.1·unx····19809·bx·defN·25-Mar-18·0 | 20 | ?rw-r--r--··6.1·unx····19809·bx·defN·25-Mar-18·08:45·OEBPS/logger_filters.xhtml |
| 21 | ?rw-r--r--··6.1·unx·····9882·bx·defN·25-Mar-18·0 | 21 | ?rw-r--r--··6.1·unx·····9882·bx·defN·25-Mar-18·08:45·OEBPS/logger_disk_log_h.xhtml |
| 22 | ?rw-r--r--··6.1·unx····64470·bx·defN·25-Mar-18·0 | 22 | ?rw-r--r--··6.1·unx····64470·bx·defN·25-Mar-18·08:45·OEBPS/logger_cookbook.xhtml |
| 23 | ?rw-r--r--··6.1·unx···102807·bx·defN·25-Mar-18·0 | 23 | ?rw-r--r--··6.1·unx···102807·bx·defN·25-Mar-18·08:45·OEBPS/logger_chapter.xhtml |
| 24 | ?rw-r--r--··6.1·unx···181761·bx·defN·25-Mar-18·0 | 24 | ?rw-r--r--··6.1·unx···181761·bx·defN·25-Mar-18·08:45·OEBPS/logger.xhtml |
| 25 | ?rw-r--r--··6.1·unx····36693·bx·defN·25-Mar-18·0 | 25 | ?rw-r--r--··6.1·unx····36693·bx·defN·25-Mar-18·08:45·OEBPS/kernel_app.xhtml |
| 26 | ?rw-r--r--··6.1·unx·····1676·bx·defN·25-Mar-18·0 | 26 | ?rw-r--r--··6.1·unx·····1676·bx·defN·25-Mar-18·08:45·OEBPS/introduction_chapter.xhtml |
| 27 | ?rw-r--r--··6.1·unx····80809·bx·defN·25-Mar-18·0 | 27 | ?rw-r--r--··6.1·unx····80809·bx·defN·25-Mar-18·08:45·OEBPS/inet_res.xhtml |
| 28 | ?rw-r--r--··6.1·unx···178170·bx·defN·25-Mar-18·0 | 28 | ?rw-r--r--··6.1·unx···178170·bx·defN·25-Mar-18·08:45·OEBPS/inet.xhtml |
| 29 | ?rw-r--r--··6.1·unx····19076·bx·defN·25-Mar-18·0 | 29 | ?rw-r--r--··6.1·unx····19076·bx·defN·25-Mar-18·08:45·OEBPS/heart.xhtml |
| 30 | ?rw-r--r--··6.1·unx····31324·bx·defN·25-Mar-18·0 | 30 | ?rw-r--r--··6.1·unx····31324·bx·defN·25-Mar-18·08:45·OEBPS/global_group.xhtml |
| 31 | ?rw-r--r--··6.1·unx····51294·bx·defN·25-Mar-18·0 | 31 | ?rw-r--r--··6.1·unx····51294·bx·defN·25-Mar-18·08:45·OEBPS/global.xhtml |
| 32 | ?rw-r--r--··6.1·unx····54264·bx·defN·25-Mar-18·0 | 32 | ?rw-r--r--··6.1·unx····54264·bx·defN·25-Mar-18·08:45·OEBPS/gen_udp.xhtml |
| 33 | ?rw-r--r--··6.1·unx····90671·bx·defN·25-Mar-18·0 | 33 | ?rw-r--r--··6.1·unx····90671·bx·defN·25-Mar-18·08:45·OEBPS/gen_tcp.xhtml |
| 34 | ?rw-r--r--··6.1·unx···196481·bx·defN·25-Mar-18·0 | 34 | ?rw-r--r--··6.1·unx···196481·bx·defN·25-Mar-18·08:45·OEBPS/gen_sctp.xhtml |
| 35 | ?rw-r--r--··6.1·unx···221922·bx·defN·25-Mar-18·0 | 35 | ?rw-r--r--··6.1·unx···221922·bx·defN·25-Mar-18·08:45·OEBPS/file.xhtml |
| 36 | ?rw-r--r--··6.1·unx····51547·bx·defN·25-Mar-18·0 | 36 | ?rw-r--r--··6.1·unx····51547·bx·defN·25-Mar-18·08:45·OEBPS/error_logger.xhtml |
| 37 | ?rw-r--r--··6.1·unx·····9371·bx·defN·25-Mar-18·0 | 37 | ?rw-r--r--··6.1·unx·····9371·bx·defN·25-Mar-18·08:45·OEBPS/error_handler.xhtml |
| 38 | ?rw-r--r--··6.1·unx···105244·bx·defN·25-Mar-18·0 | 38 | ?rw-r--r--··6.1·unx···105244·bx·defN·25-Mar-18·08:45·OEBPS/erpc.xhtml |
| 39 | ?rw-r--r--··6.1·unx····19311·bx·defN·25-Mar-18·0 | 39 | ?rw-r--r--··6.1·unx····19311·bx·defN·25-Mar-18·08:45·OEBPS/erl_epmd.xhtml |
| 40 | ?rw-r--r--··6.1·unx····79832·bx·defN·25-Mar-18·0 | 40 | ?rw-r--r--··6.1·unx····79832·bx·defN·25-Mar-18·08:45·OEBPS/erl_ddll.xhtml |
| 41 | ?rw-r--r--··6.1·unx····10114·bx·defN·25-Mar-18·0 | 41 | ?rw-r--r--··6.1·unx····10114·bx·defN·25-Mar-18·08:45·OEBPS/erl_boot_server.xhtml |
| 42 | ?rw-r--r--··6.1·unx····14988·bx·defN·25-Mar-18·0 | 42 | ?rw-r--r--··6.1·unx····14988·bx·defN·25-Mar-18·08:45·OEBPS/eep48_chapter.xhtml |
| 43 | ?rw-r--r--··6.1·unx····14562·bx·defN·25-Mar-18·0 | 43 | ?rw-r--r--··6.1·unx····14562·bx·defN·25-Mar-18·08:45·OEBPS/dist/epub-erlang-ESPT6BQV.css |
| 44 | ?rw-r--r--··6.1·unx······499·bx·defN·25-Mar-18·0 | 44 | ?rw-r--r--··6.1·unx······499·bx·defN·25-Mar-18·08:45·OEBPS/dist/epub-LSJCIYTM.js |
| 45 | ?rw-r--r--··6.1·unx···129923·bx·defN·25-Mar-18·0 | 45 | ?rw-r--r--··6.1·unx···129923·bx·defN·25-Mar-18·08:45·OEBPS/disk_log.xhtml |
| 46 | ?rw-r--r--··6.1·unx·····7455·bx·defN·25-Mar-18·0 | 46 | ?rw-r--r--··6.1·unx·····7455·bx·defN·25-Mar-18·08:45·OEBPS/content.opf |
| 47 | ?rw-r--r--··6.1·unx····10083·bx·defN·25-Mar-18·0 | 47 | ?rw-r--r--··6.1·unx····10083·bx·defN·25-Mar-18·08:45·OEBPS/config.xhtml |
| 48 | ?rw-r--r--··6.1·unx···152547·bx·defN·25-Mar-18·0 | 48 | ?rw-r--r--··6.1·unx···152547·bx·defN·25-Mar-18·08:45·OEBPS/code.xhtml |
| 49 | ?rw-r--r--··6.1·unx····11265·bx·defN·25-Mar-18·0 | 49 | ?rw-r--r--··6.1·unx····11265·bx·defN·25-Mar-18·08:45·OEBPS/auth.xhtml |
| 50 | ?rw-r--r--··6.1·unx·····5837·bx·defN·25-Mar-18·0 | 50 | ?rw-r--r--··6.1·unx·····5837·bx·defN·25-Mar-18·08:45·OEBPS/assets/logo.png |
| 51 | ?rw-r--r--··6.1·unx····97843·bx·defN·25-Mar-18·0 | 51 | ?rw-r--r--··6.1·unx····97843·bx·defN·25-Mar-18·08:45·OEBPS/application.xhtml |
| 52 | ?rw-r--r--··6.1·unx····20113·bx·defN·25-Mar-18·0 | 52 | ?rw-r--r--··6.1·unx····20113·bx·defN·25-Mar-18·08:45·OEBPS/app.xhtml |
| 53 | ?rw-r--r--··6.1·unx······252·bx·defN·25-Mar-18·0 | 53 | ?rw-r--r--··6.1·unx······252·bx·defN·25-Mar-18·08:45·META-INF/container.xml |
| 54 | ?rw-r--r--··6.1·unx······162·bx·defN·25-Mar-18·0 | 54 | ?rw-r--r--··6.1·unx······162·bx·defN·25-Mar-18·08:45·META-INF/com.apple.ibooks.display-options.xml |
| 55 | 53·files,·3517118·bytes·uncompressed,·7721 | 55 | 53·files,·3517118·bytes·uncompressed,·772106·bytes·compressed:··78.0% |
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| 1 | Zip·archive·data,·made·by·v6.1·UNIX,·extract·using·at·least·v1.0,·last·modified,·last·modified·Sun,·Mar·18·2025·0 | 1 | Zip·archive·data,·made·by·v6.1·UNIX,·extract·using·at·least·v1.0,·last·modified,·last·modified·Sun,·Mar·18·2025·08:45:24,·uncompressed·size·20,·method=store |
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| 922 | all·the·nodes,·but·the·multicall·is·faster,·as·all·the·requests·are·sent·at·the | 922 | all·the·nodes,·but·the·multicall·is·faster,·as·all·the·requests·are·sent·at·the |
| 923 | same·time·and·are·collected·one·by·one·as·they·come·back.</p><p>The·function·evaluates·<a·href="../../../../lib/../erts/doc/html/erlang.html#apply/3"><code·class="inline">apply(Module,·Function,·Args)</code></a>·on·the | 923 | same·time·and·are·collected·one·by·one·as·they·come·back.</p><p>The·function·evaluates·<a·href="../../../../lib/../erts/doc/html/erlang.html#apply/3"><code·class="inline">apply(Module,·Function,·Args)</code></a>·on·the |
| 924 | specified·nodes·and·collects·the·answers.·It·returns·<code·class="inline">{ResL,·BadNodes}</code>,·where | 924 | specified·nodes·and·collects·the·answers.·It·returns·<code·class="inline">{ResL,·BadNodes}</code>,·where |
| 925 | <code·class="inline">BadNodes</code>·is·a·list·of·the·nodes·that·do·not·exist,·and·<code·class="inline">ResL</code>·is·a·list·of·the | 925 | <code·class="inline">BadNodes</code>·is·a·list·of·the·nodes·that·do·not·exist,·and·<code·class="inline">ResL</code>·is·a·list·of·the |
| 926 | return·values,·or·<code·class="inline">{badrpc,·Reason}</code>·for·failing·calls.·<code·class="inline">Timeout</code>·is·a·time | 926 | return·values,·or·<code·class="inline">{badrpc,·Reason}</code>·for·failing·calls.·<code·class="inline">Timeout</code>·is·a·time |
| 927 | (integer)·in·milliseconds,·or·<code·class="inline">infinity</code>.</p><p>The·following·example·is·useful·when·new·object·code·is·to·be·loaded·on·all | 927 | (integer)·in·milliseconds,·or·<code·class="inline">infinity</code>.</p><p>The·following·example·is·useful·when·new·object·code·is·to·be·loaded·on·all |
| 928 | nodes·in·the·network,·and·indicates·some·side·effects·that·RPCs·can·produce:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="c1">%%·Find·object·code·for·module·Mod</samp><samp·class="w"> | 928 | nodes·in·the·network,·and·indicates·some·side·effects·that·RPCs·can·produce:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="c1">%%·Find·object·code·for·module·Mod</samp><samp·class="w"> |
| 929 | </samp><samp·class="p"·data-group-id=" | 929 | </samp><samp·class="p"·data-group-id="1167049877-1">{</samp><samp·class="n">Mod</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Bin</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">File</samp><samp·class="p"·data-group-id="1167049877-1">}</samp><samp·[·...·truncated·by·diffoscope;·len:·277,·SHA:·29cbbb32dc654d83bb8ae311522926477ba229d1b766dda838da9697f8c8587a·...·]-2">)</samp><samp·class="p">,</samp><samp·class="w"> |
| 930 | </samp><samp·class="c1">%%·and·load·it·on·all·nodes·including·this·one</samp><samp·class="w"> | 930 | </samp><samp·class="c1">%%·and·load·it·on·all·nodes·including·this·one</samp><samp·class="w"> |
| 931 | </samp><samp·class="p"·data-group-id=" | 931 | </samp><samp·class="p"·data-group-id="1167049877-3">{</samp><samp·class="n">ResL</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="p">_</samp><samp·class="p"·data-group-id="1167049877-3">}</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·clas[·...·truncated·by·diffoscope;·len:·608,·SHA:·0fa115faba5c66dc9cda9997bdeceaa9e48e1d935d969ee8c05730adea2c5d85·...·]-4">)</samp><samp·class="p">,</samp><samp·class="w"> |
| 932 | </samp><samp·class="c1">%%·and·then·maybe·check·the·ResL·list.</samp></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>If·you·want·the·ability·to·distinguish·between·results,·you·may·want·to | 932 | </samp><samp·class="c1">%%·and·then·maybe·check·the·ResL·list.</samp></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>If·you·want·the·ability·to·distinguish·between·results,·you·may·want·to |
| 933 | consider·using·the·<a·href="erpc.xhtml#multicall/4"><code·class="inline">erpc:multicall()</code></a>·function·from·the | 933 | consider·using·the·<a·href="erpc.xhtml#multicall/4"><code·class="inline">erpc:multicall()</code></a>·function·from·the |
| 934 | <code·class="inline">erpc</code>·module·instead.</p></section><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>You·cannot·make·<em>any</em>·assumptions·about·the·process·that·will·perform·the | 934 | <code·class="inline">erpc</code>·module·instead.</p></section><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>You·cannot·make·<em>any</em>·assumptions·about·the·process·that·will·perform·the |
| 935 | <code·class="inline">apply()</code>.·It·may·be·the·calling·process·itself,·an·<code·class="inline">rpc</code>·server,·another | 935 | <code·class="inline">apply()</code>.·It·may·be·the·calling·process·itself,·an·<code·class="inline">rpc</code>·server,·another |
| 936 | server,·or·a·freshly·spawned·process.</p></section> | 936 | server,·or·a·freshly·spawned·process.</p></section> |
| 937 | ··</section> | 937 | ··</section> |
| Offset 715, 15 lines modified | Offset 715, 15 lines modified | ||
| 715 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·monitor_scope(Scope·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:atom/0">atom</a>())·->·{<a·href="../../../../lib/../erts/doc/html/erlang.html#t:reference/0">reference</a>(),·#{<a·href="#t:group/0">group</a>()·=>·[<a·href="../../../../lib/../erts/doc/html/erlang.html#t:pid/0">pid</a>()]}}.</pre> | 715 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·monitor_scope(Scope·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:atom/0">atom</a>())·->·{<a·href="../../../../lib/../erts/doc/html/erlang.html#t:reference/0">reference</a>(),·#{<a·href="#t:group/0">group</a>()·=>·[<a·href="../../../../lib/../erts/doc/html/erlang.html#t:pid/0">pid</a>()]}}.</pre> |
| 716 | ······</div> | 716 | ······</div> |
| 717 | <p>Subscribes·the·caller·to·updates·from·the·specified·scope.</p><p>Returns·content·of·the·entire·scope·and·a·reference·to·match·the·upcoming | 717 | <p>Subscribes·the·caller·to·updates·from·the·specified·scope.</p><p>Returns·content·of·the·entire·scope·and·a·reference·to·match·the·upcoming |
| 718 | notifications.</p><p>Whenever·any·group·membership·changes,·an·update·message·is·sent·to·the | 718 | notifications.</p><p>Whenever·any·group·membership·changes,·an·update·message·is·sent·to·the |
| 719 | subscriber:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id=" | 719 | subscriber:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id="1884272100-1">{</samp><samp·class="n">Ref</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="ss">join</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Group</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·cl[·...·truncated·by·diffoscope;·len:·781,·SHA:·4dae41487fea1565165bd3ea245bcfb8202340ca4a882131b1b84c500919a713·...·]-1">}</samp></code></pre> |
| 720 | ··</section> | 720 | ··</section> |
| 721 | </section> | 721 | </section> |
| 722 | <section·class="detail"·id="start/1"> | 722 | <section·class="detail"·id="start/1"> |
| 723 | ··<div·class="detail-header"> | 723 | ··<div·class="detail-header"> |
| 724 | ····<a·href="#start/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 724 | ····<a·href="#start/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 725 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 725 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 23144, 77 lines modified | Offset 23144, 77 lines modified | ||
| 0005a670:·7061·6e3e·3c73·7061·6e20·636c·6173·733d··pan><span·class= | 0005a670:·7061·6e3e·3c73·7061·6e20·636c·6173·733d··pan><span·class= | ||
| 0005a680:·226e·6322·3e65·726c·616e·673c·2f73·7061··"nc">erlang</spa | 0005a680:·226e·6322·3e65·726c·616e·673c·2f73·7061··"nc">erlang</spa | ||
| 0005a690:·6e3e·3c73·7061·6e20·636c·6173·733d·2270··n><span·class="p | 0005a690:·6e3e·3c73·7061·6e20·636c·6173·733d·2270··n><span·class="p | ||
| 0005a6a0:·223e·3a3c·2f73·7061·6e3e·3c73·7061·6e20··">:</span><span· | 0005a6a0:·223e·3a3c·2f73·7061·6e3e·3c73·7061·6e20··">:</span><span· | ||
| 0005a6b0:·636c·6173·733d·226e·6622·3e6d·6f6e·6974··class="nf">monit | 0005a6b0:·636c·6173·733d·226e·6622·3e6d·6f6e·6974··class="nf">monit | ||
| 0005a6c0:·6f72·3c2f·7370·616e·3e3c·7370·616e·2063··or</span><span·c | 0005a6c0:·6f72·3c2f·7370·616e·3e3c·7370·616e·2063··or</span><span·c | ||
| 0005a6d0:·6c61·7373·3d22·7022·2064·6174·612d·6772··lass="p"·data-gr | 0005a6d0:·6c61·7373·3d22·7022·2064·6174·612d·6772··lass="p"·data-gr | ||
| 0005a6e0:·6f75·702d·6964·3d22·323 | 0005a6e0:·6f75·702d·6964·3d22·3239·3336·3537·3631··oup-id="29365761 | ||
| 0005a6f0:·3 | 0005a6f0:·3238·2d31·223e·283c·2f73·7061·6e3e·3c73··28-1">(</span><s | ||
| 0005a700:·7061·6e20·636c·6173·733d·2273·7322·3e70··pan·class="ss">p | 0005a700:·7061·6e20·636c·6173·733d·2273·7322·3e70··pan·class="ss">p | ||
| 0005a710:·726f·6365·7373·3c2f·7370·616e·3e3c·7370··rocess</span><sp | 0005a710:·726f·6365·7373·3c2f·7370·616e·3e3c·7370··rocess</span><sp | ||
| 0005a720:·616e·2063·6c61·7373·3d22·7022·3e2c·3c2f··an·class="p">,</ | 0005a720:·616e·2063·6c61·7373·3d22·7022·3e2c·3c2f··an·class="p">,</ | ||
| 0005a730:·7370·616e·3e3c·7370·616e·2063·6c61·7373··span><span·class | 0005a730:·7370·616e·3e3c·7370·616e·2063·6c61·7373··span><span·class | ||
| 0005a740:·3d22·7722·3e20·3c2f·7370·616e·3e3c·7370··="w">·</span><sp | 0005a740:·3d22·7722·3e20·3c2f·7370·616e·3e3c·7370··="w">·</span><sp | ||
| 0005a750:·616e·2063·6c61·7373·3d22·6e22·3e50·6964··an·class="n">Pid | 0005a750:·616e·2063·6c61·7373·3d22·6e22·3e50·6964··an·class="n">Pid | ||
| 0005a760:·3c2f·7370·616e·3e3c·7370·616e·2063·6c61··</span><span·cla | 0005a760:·3c2f·7370·616e·3e3c·7370·616e·2063·6c61··</span><span·cla | ||
| 0005a770:·7373·3d22·7022·2064·6174·612d·6772·6f75··ss="p"·data-grou | 0005a770:·7373·3d22·7022·2064·6174·612d·6772·6f75··ss="p"·data-grou | ||
| 0005a780:·702d·6964·3d22·323 | 0005a780:·702d·6964·3d22·3239·3336·3537·3631·3238··p-id="2936576128 | ||
| 0005a790:·2d31·223e·293c·2f73·7061·6e3e·3c73·7061··-1">)</span><spa | 0005a790:·2d31·223e·293c·2f73·7061·6e3e·3c73·7061··-1">)</span><spa | ||
| 0005a7a0:·6e20·636c·6173·733d·2270·223e·2c3c·2f73··n·class="p">,</s | 0005a7a0:·6e20·636c·6173·733d·2270·223e·2c3c·2f73··n·class="p">,</s | ||
| 0005a7b0:·7061·6e3e·3c73·7061·6e20·636c·6173·733d··pan><span·class= | 0005a7b0:·7061·6e3e·3c73·7061·6e20·636c·6173·733d··pan><span·class= | ||
| 0005a7c0:·2277·223e·0a20·2020·2020·2020·2020·2020··"w">.··········· | 0005a7c0:·2277·223e·0a20·2020·2020·2020·2020·2020··"w">.··········· | ||
| 0005a7d0:·203c·2f73·7061·6e3e·3c73·7061·6e20·636c···</span><span·cl | 0005a7d0:·203c·2f73·7061·6e3e·3c73·7061·6e20·636c···</span><span·cl | ||
| 0005a7e0:·6173·733d·2263·3122·3e25·2520·2e2e·2e3c··ass="c1">%%·...< | 0005a7e0:·6173·733d·2263·3122·3e25·2520·2e2e·2e3c··ass="c1">%%·...< | ||
| 0005a7f0:·2f73·7061·6e3e·3c73·7061·6e20·636c·6173··/span><span·clas | 0005a7f0:·2f73·7061·6e3e·3c73·7061·6e20·636c·6173··/span><span·clas | ||
| 0005a800:·733d·2277·223e·0a20·2020·2020·2020·2020··s="w">.········· | 0005a800:·733d·2277·223e·0a20·2020·2020·2020·2020··s="w">.········· | ||
| 0005a810:·2020·203c·2f73·7061·6e3e·3c73·7061·6e20·····</span><span· | 0005a810:·2020·203c·2f73·7061·6e3e·3c73·7061·6e20·····</span><span· | ||
| 0005a820:·636c·6173·733d·226e·6622·3e65·7869·743c··class="nf">exit< | 0005a820:·636c·6173·733d·226e·6622·3e65·7869·743c··class="nf">exit< | ||
| 0005a830:·2f73·7061·6e3e·3c73·7061·6e20·636c·6173··/span><span·clas | 0005a830:·2f73·7061·6e3e·3c73·7061·6e20·636c·6173··/span><span·clas | ||
| 0005a840:·733d·2270·2220·6461·7461·2d67·726f·7570··s="p"·data-group | 0005a840:·733d·2270·2220·6461·7461·2d67·726f·7570··s="p"·data-group | ||
| 0005a850:·2d69·643d·2232·3 | 0005a850:·2d69·643d·2232·3933·3635·3736·3132·382d··-id="2936576128- | ||
| 0005a860:·3222·3e28·3c2f·7370·616e·3e3c·7370·616e··2">(</span><span | 0005a860:·3222·3e28·3c2f·7370·616e·3e3c·7370·616e··2">(</span><span | ||
| 0005a870:·2063·6c61·7373·3d22·6e22·3e50·6964·3c2f···class="n">Pid</ | 0005a870:·2063·6c61·7373·3d22·6e22·3e50·6964·3c2f···class="n">Pid</ | ||
| 0005a880:·7370·616e·3e3c·7370·616e·2063·6c61·7373··span><span·class | 0005a880:·7370·616e·3e3c·7370·616e·2063·6c61·7373··span><span·class | ||
| 0005a890:·3d22·7022·3e2c·3c2f·7370·616e·3e3c·7370··="p">,</span><sp | 0005a890:·3d22·7022·3e2c·3c2f·7370·616e·3e3c·7370··="p">,</span><sp | ||
| 0005a8a0:·616e·2063·6c61·7373·3d22·7722·3e20·3c2f··an·class="w">·</ | 0005a8a0:·616e·2063·6c61·7373·3d22·7722·3e20·3c2f··an·class="w">·</ | ||
| 0005a8b0:·7370·616e·3e3c·7370·616e·2063·6c61·7373··span><span·class | 0005a8b0:·7370·616e·3e3c·7370·616e·2063·6c61·7373··span><span·class | ||
| 0005a8c0:·3d22·7373·223e·6261·6e67·3c2f·7370·616e··="ss">bang</span | 0005a8c0:·3d22·7373·223e·6261·6e67·3c2f·7370·616e··="ss">bang</span | ||
| 0005a8d0:·3e3c·7370·616e·2063·6c61·7373·3d22·7022··><span·class="p" | 0005a8d0:·3e3c·7370·616e·2063·6c61·7373·3d22·7022··><span·class="p" | ||
| 0005a8e0:·2064·6174·612d·6772·6f75·702d·6964·3d22···data-group-id=" | 0005a8e0:·2064·6174·612d·6772·6f75·702d·6964·3d22···data-group-id=" | ||
| 0005a8f0:·323 | 0005a8f0:·3239·3336·3537·3631·3238·2d32·223e·293c··2936576128-2">)< | ||
| 0005a900:·2f73·7061·6e3e·3c73·7061·6e20·636c·6173··/span><span·clas | 0005a900:·2f73·7061·6e3e·3c73·7061·6e20·636c·6173··/span><span·clas | ||
| 0005a910:·733d·2270·223e·2c3c·2f73·7061·6e3e·3c73··s="p">,</span><s | 0005a910:·733d·2270·223e·2c3c·2f73·7061·6e3e·3c73··s="p">,</span><s | ||
| 0005a920:·7061·6e20·636c·6173·733d·2277·223e·0a20··pan·class="w">.· | 0005a920:·7061·6e20·636c·6173·733d·2277·223e·0a20··pan·class="w">.· | ||
| 0005a930:·2020·2020·2020·2020·2020·203c·2f73·7061·············</spa | 0005a930:·2020·2020·2020·2020·2020·203c·2f73·7061·············</spa | ||
| 0005a940:·6e3e·3c73·7061·6e20·636c·6173·733d·226e··n><span·class="n | 0005a940:·6e3e·3c73·7061·6e20·636c·6173·733d·226e··n><span·class="n | ||
| 0005a950:·6322·3e65·726c·616e·673c·2f73·7061·6e3e··c">erlang</span> | 0005a950:·6322·3e65·726c·616e·673c·2f73·7061·6e3e··c">erlang</span> | ||
| 0005a960:·3c73·7061·6e20·636c·6173·733d·2270·223e··<span·class="p"> | 0005a960:·3c73·7061·6e20·636c·6173·733d·2270·223e··<span·class="p"> | ||
| 0005a970:·3a3c·2f73·7061·6e3e·3c73·7061·6e20·636c··:</span><span·cl | 0005a970:·3a3c·2f73·7061·6e3e·3c73·7061·6e20·636c··:</span><span·cl | ||
| 0005a980:·6173·733d·226e·6622·3e64·656d·6f6e·6974··ass="nf">demonit | 0005a980:·6173·733d·226e·6622·3e64·656d·6f6e·6974··ass="nf">demonit | ||
| 0005a990:·6f72·3c2f·7370·616e·3e3c·7370·616e·2063··or</span><span·c | 0005a990:·6f72·3c2f·7370·616e·3e3c·7370·616e·2063··or</span><span·c | ||
| 0005a9a0:·6c61·7373·3d22·7022·2064·6174·612d·6772··lass="p"·data-gr | 0005a9a0:·6c61·7373·3d22·7022·2064·6174·612d·6772··lass="p"·data-gr | ||
| 0005a9b0:·6f75·702d·6964·3d22·323 | 0005a9b0:·6f75·702d·6964·3d22·3239·3336·3537·3631··oup-id="29365761 | ||
| 0005a9c0:·3 | 0005a9c0:·3238·2d33·223e·283c·2f73·7061·6e3e·3c73··28-3">(</span><s | ||
| 0005a9d0:·7061·6e20·636c·6173·733d·226e·223e·4d6f··pan·class="n">Mo | 0005a9d0:·7061·6e20·636c·6173·733d·226e·223e·4d6f··pan·class="n">Mo | ||
| 0005a9e0:·6e3c·2f73·7061·6e3e·3c73·7061·6e20·636c··n</span><span·cl | 0005a9e0:·6e3c·2f73·7061·6e3e·3c73·7061·6e20·636c··n</span><span·cl | ||
| 0005a9f0:·6173·733d·2270·2220·6461·7461·2d67·726f··ass="p"·data-gro | 0005a9f0:·6173·733d·2270·2220·6461·7461·2d67·726f··ass="p"·data-gro | ||
| 0005aa00:·7570·2d69·643d·2232·3 | 0005aa00:·7570·2d69·643d·2232·3933·3635·3736·3132··up-id="293657612 | ||
| 0005aa10:·3 | 0005aa10:·382d·3322·3e29·3c2f·7370·616e·3e3c·7370··8-3">)</span><sp | ||
| 0005aa20:·616e·2063·6c61·7373·3d22·7022·3e2c·3c2f··an·class="p">,</ | 0005aa20:·616e·2063·6c61·7373·3d22·7022·3e2c·3c2f··an·class="p">,</ | ||
| 0005aa30:·7370·616e·3e3c·7370·616e·2063·6c61·7373··span><span·class | 0005aa30:·7370·616e·3e3c·7370·616e·2063·6c61·7373··span><span·class | ||
| 0005aa40:·3d22·7722·3e0a·2020·2020·2020·2020·2020··="w">.·········· | 0005aa40:·3d22·7722·3e0a·2020·2020·2020·2020·2020··="w">.·········· | ||
| 0005aa50:·2020·3c2f·7370·616e·3e3c·7370·616e·2063····</span><span·c | 0005aa50:·2020·3c2f·7370·616e·3e3c·7370·616e·2063····</span><span·c | ||
| 0005aa60:·6c61·7373·3d22·6b22·3e72·6563·6569·7665··lass="k">receive | 0005aa60:·6c61·7373·3d22·6b22·3e72·6563·6569·7665··lass="k">receive | ||
| 0005aa70:·3c2f·7370·616e·3e3c·7370·616e·2063·6c61··</span><span·cla | 0005aa70:·3c2f·7370·616e·3e3c·7370·616e·2063·6c61··</span><span·cla | ||
| 0005aa80:·7373·3d22·7722·3e0a·2020·2020·2020·2020··ss="w">.········ | 0005aa80:·7373·3d22·7722·3e0a·2020·2020·2020·2020··ss="w">.········ | ||
| 0005aa90:·2020·2020·2020·2020·3c2f·7370·616e·3e3c··········</span>< | 0005aa90:·2020·2020·2020·2020·3c2f·7370·616e·3e3c··········</span>< | ||
| 0005aaa0:·7370·616e·2063·6c61·7373·3d22·7022·2064··span·class="p"·d | 0005aaa0:·7370·616e·2063·6c61·7373·3d22·7022·2064··span·class="p"·d | ||
| 0005aab0:·6174·612d·6772·6f75·702d·6964·3d22·323 | 0005aab0:·6174·612d·6772·6f75·702d·6964·3d22·3239··ata-group-id="29 | ||
| 0005aac0:·3 | 0005aac0:·3336·3537·3631·3238·2d34·223e·7b3c·2f73··36576128-4">{</s | ||
| 0005aad0:·7061·6e3e·3c73·7061·6e20·636c·6173·733d··pan><span·class= | 0005aad0:·7061·6e3e·3c73·7061·6e20·636c·6173·733d··pan><span·class= | ||
| 0005aae0:·2273·7322·3e26·2333·393b·444f·574e·2623··"ss">'DOWN&# | 0005aae0:·2273·7322·3e26·2333·393b·444f·574e·2623··"ss">'DOWN&# | ||
| 0005aaf0:·3339·3b3c·2f73·7061·6e3e·3c73·7061·6e20··39;</span><span· | 0005aaf0:·3339·3b3c·2f73·7061·6e3e·3c73·7061·6e20··39;</span><span· | ||
| 0005ab00:·636c·6173·733d·2270·223e·2c3c·2f73·7061··class="p">,</spa | 0005ab00:·636c·6173·733d·2270·223e·2c3c·2f73·7061··class="p">,</spa | ||
| 0005ab10:·6e3e·3c73·7061·6e20·636c·6173·733d·2277··n><span·class="w | 0005ab10:·6e3e·3c73·7061·6e20·636c·6173·733d·2277··n><span·class="w | ||
| 0005ab20:·223e·203c·2f73·7061·6e3e·3c73·7061·6e20··">·</span><span· | 0005ab20:·223e·203c·2f73·7061·6e3e·3c73·7061·6e20··">·</span><span· | ||
| 0005ab30:·636c·6173·733d·226e·223e·4d6f·6e3c·2f73··class="n">Mon</s | 0005ab30:·636c·6173·733d·226e·223e·4d6f·6e3c·2f73··class="n">Mon</s | ||
| Offset 23230, 15 lines modified | Offset 23230, 15 lines modified | ||
| 0005abd0:·6e22·3e50·6964·3c2f·7370·616e·3e3c·7370··n">Pid</span><sp | 0005abd0:·6e22·3e50·6964·3c2f·7370·616e·3e3c·7370··n">Pid</span><sp | ||
| 0005abe0:·616e·2063·6c61·7373·3d22·7022·3e2c·3c2f··an·class="p">,</ | 0005abe0:·616e·2063·6c61·7373·3d22·7022·3e2c·3c2f··an·class="p">,</ | ||
| 0005abf0:·7370·616e·3e3c·7370·616e·2063·6c61·7373··span><span·class | 0005abf0:·7370·616e·3e3c·7370·616e·2063·6c61·7373··span><span·class | ||
| 0005ac00:·3d22·7722·3e20·3c2f·7370·616e·3e3c·7370··="w">·</span><sp | 0005ac00:·3d22·7722·3e20·3c2f·7370·616e·3e3c·7370··="w">·</span><sp | ||
| 0005ac10:·616e·2063·6c61·7373·3d22·7022·3e5f·3c2f··an·class="p">_</ | 0005ac10:·616e·2063·6c61·7373·3d22·7022·3e5f·3c2f··an·class="p">_</ | ||
| 0005ac20:·7370·616e·3e3c·7370·616e·2063·6c61·7373··span><span·class | 0005ac20:·7370·616e·3e3c·7370·616e·2063·6c61·7373··span><span·class | ||
| 0005ac30:·3d22·7022·2064·6174·612d·6772·6f75·702d··="p"·data-group- | 0005ac30:·3d22·7022·2064·6174·612d·6772·6f75·702d··="p"·data-group- | ||
| 0005ac40:·6964·3d22·323 | 0005ac40:·6964·3d22·3239·3336·3537·3631·3238·2d34··id="2936576128-4 | ||
| 0005ac50:·223e·7d3c·2f73·7061·6e3e·3c73·7061·6e20··">}</span><span· | 0005ac50:·223e·7d3c·2f73·7061·6e3e·3c73·7061·6e20··">}</span><span· | ||
| 0005ac60:·636c·6173·733d·2277·223e·203c·2f73·7061··class="w">·</spa | 0005ac60:·636c·6173·733d·2277·223e·203c·2f73·7061··class="w">·</spa | ||
| 0005ac70:·6e3e·3c73·7061·6e20·636c·6173·733d·2270··n><span·class="p | 0005ac70:·6e3e·3c73·7061·6e20·636c·6173·733d·2270··n><span·class="p | ||
| 0005ac80:·223e·2d26·6774·3b3c·2f73·7061·6e3e·3c73··">-></span><s | 0005ac80:·223e·2d26·6774·3b3c·2f73·7061·6e3e·3c73··">-></span><s | ||
| 0005ac90:·7061·6e20·636c·6173·733d·2277·223e·203c··pan·class="w">·< | 0005ac90:·7061·6e20·636c·6173·733d·2277·223e·203c··pan·class="w">·< | ||
| 0005aca0:·2f73·7061·6e3e·3c73·7061·6e20·636c·6173··/span><span·clas | 0005aca0:·2f73·7061·6e3e·3c73·7061·6e20·636c·6173··/span><span·clas | ||
| 0005acb0:·733d·2273·7322·3e6f·6b3c·2f73·7061·6e3e··s="ss">ok</span> | 0005acb0:·733d·2273·7322·3e6f·6b3c·2f73·7061·6e3e··s="ss">ok</span> |
| Offset 354, 16 lines modified | Offset 354, 16 lines modified | ||
| 354 | ···················Name·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:string/0">string</a>(), | 354 | ···················Name·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:string/0">string</a>(), |
| 355 | ···················Port·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:non_neg_integer/0">non_neg_integer</a>(), | 355 | ···················Port·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:non_neg_integer/0">non_neg_integer</a>(), |
| 356 | ···················Reason·::·address·|·<a·href="file.xhtml#t:posix/0">file:posix</a>().</pre> | 356 | ···················Reason·::·address·|·<a·href="file.xhtml#t:posix/0">file:posix</a>().</pre> |
| 357 | ······</div> | 357 | ······</div> |
| 358 | <p>Returns·the·names·and·associated·port·numbers·of·the·Erlang·nodes·that·<code·class="inline">epmd</code> | 358 | <p>Returns·the·names·and·associated·port·numbers·of·the·Erlang·nodes·that·<code·class="inline">epmd</code> |
| 359 | registered·at·the·specified·host.</p><p>Similar·to·<code·class="inline">epmd·-names</code>,·see·<a·href="../../../../lib/../erts/doc/html/epmd_cmd.xhtml"><code·class="inline">erts:epmd</code></a>.</p><p>Returns·<code·class="inline">{error,·address}</code>·if·<code·class="inline">epmd</code>·is·not·operational.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><samp·class="gp·unselectable">(arne@dunn)1>·</samp><samp·class="nc">net_adm</samp><samp·class="p">:</samp><samp·class="nf">names</samp><samp·class="p"·data-group-id=" | 359 | registered·at·the·specified·host.</p><p>Similar·to·<code·class="inline">epmd·-names</code>,·see·<a·href="../../../../lib/../erts/doc/html/epmd_cmd.xhtml"><code·class="inline">erts:epmd</code></a>.</p><p>Returns·<code·class="inline">{error,·address}</code>·if·<code·class="inline">epmd</code>·is·not·operational.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><samp·class="gp·unselectable">(arne@dunn)1>·</samp><samp·class="nc">net_adm</samp><samp·class="p">:</samp><samp·class="nf">names</samp><samp·class="p"·data-group-id="5100017816-1">(</samp><samp·class="p"·data-group-id="5100017816-1">)</samp><samp·class="p">.</samp><samp·class="w"> |
| 360 | </samp><samp·class="p"·data-group-id=" | 360 | </samp><samp·class="p"·data-group-id="5100017816-2">{</samp><samp·class="ss">ok</samp><samp·class="p">,</samp><samp·class="p"·data-group-id="5100017816-3">[</samp><samp·class="p"·data-group-id="5100017816-4">{</samp><samp·class="s">"arne"</samp><samp·class="p">,</samp><samp·class="mi[·...·truncated·by·diffoscope;·len:·161,·SHA:·603c700c5fe3da44601c6ffa2338d64b272237c0d301b8b91274c12a913b29f1·...·]-2">}</samp></code></pre> |
| 361 | ··</section> | 361 | ··</section> |
| 362 | </section> | 362 | </section> |
| 363 | <section·class="detail"·id="ping/1"> | 363 | <section·class="detail"·id="ping/1"> |
| 364 | ··<div·class="detail-header"> | 364 | ··<div·class="detail-header"> |
| 365 | ····<a·href="#ping/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 365 | ····<a·href="#ping/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 366 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 366 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 437, 21 lines modified | Offset 437, 21 lines modified | ||
| 437 | ··········<pre·translate="no"><span·class="attribute">-type</span>·ifaddrs_filter_fun()·::·fun((<a·href="#t:ifaddrs/0">ifaddrs</a>())·->·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:boolean/0">boolean</a>()).</pre> | 437 | ··········<pre·translate="no"><span·class="attribute">-type</span>·ifaddrs_filter_fun()·::·fun((<a·href="#t:ifaddrs/0">ifaddrs</a>())·->·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:boolean/0">boolean</a>()).</pre> |
| 438 | ······</div> | 438 | ······</div> |
| 439 | <p>Interface·address·filtering·selector·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:function/0"><code·class="inline">function/0</code></a>.</p><p>For·each·<code·class="inline">ifaddrs</code>·entry,·return·either·<code·class="inline">true</code>·to·keep·the·entry | 439 | <p>Interface·address·filtering·selector·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:function/0"><code·class="inline">function/0</code></a>.</p><p>For·each·<code·class="inline">ifaddrs</code>·entry,·return·either·<code·class="inline">true</code>·to·keep·the·entry |
| 440 | or·<code·class="inline">false</code>·to·discard·the·entry.</p><p>For·example,·to·get·an·interface·list·which·only·contains | 440 | or·<code·class="inline">false</code>·to·discard·the·entry.</p><p>For·example,·to·get·an·interface·list·which·only·contains |
| 441 | non-<code·class="inline">loopback</code>·<code·class="inline">inet</code>·interfaces:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nc">net</samp><samp·class="p">:</samp><samp·class="nf">getifaddrs</samp><samp·class="p"·data-group-id=" | 441 | non-<code·class="inline">loopback</code>·<code·class="inline">inet</code>·interfaces:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nc">net</samp><samp·class="p">:</samp><samp·class="nf">getifaddrs</samp><samp·class="p"·data-group-id="0180655464-1">(</samp><samp·class="w"> |
| 442 | ····</samp><samp·class="nf">fun</samp><samp·class="w">·</samp><samp·class="p"·data-group-id=" | 442 | ····</samp><samp·class="nf">fun</samp><samp·class="w">·</samp><samp·class="p"·data-group-id="0180655464-2">(</samp><samp·class="p"·data-group-id="0180655464-3">#{</samp><samp·class="w">·</samp><samp·class="ss">addr</samp><samp·class="w">··</samp><samp·class="p">:=</samp><samp·class="w">·</samp><samp·class="p"·data-group-id="0180655464-4">#{</samp>[·...·truncated·by·diffoscope;·len:·171,·SHA:·1fd6af4f24ba2f7dd90e620977784818b8363bb90c801112f4d61f2c19aed59d·...·]4-4">}</samp><samp·class="p">,</samp><samp·class="w"> |
| 443 | ············</samp><samp·class="ss">flags</samp><samp·class="w">·</samp><samp·class="p">:=</samp><samp·class="w">·</samp><samp·class="n">Flags</samp><samp·class="p"·data-group-id=" | 443 | ············</samp><samp·class="ss">flags</samp><samp·class="w">·</samp><samp·class="p">:=</samp><samp·class="w">·</samp><samp·class="n">Flags</samp><samp·class="p"·data-group-id="0180655464-3">}</samp><samp·class="p"·data-group-id="0180655464-2">)</samp><samp·class="w">·</samp><samp·class="p">-></samp><samp·class="w"> |
| 444 | ··········</samp><samp·class="ow">not</samp><samp·class="w">·</samp><samp·class="nc">lists</samp><samp·class="p">:</samp><samp·class="nf">member</samp><samp·class="p"·data-group-id=" | 444 | ··········</samp><samp·class="ow">not</samp><samp·class="w">·</samp><samp·class="nc">lists</samp><samp·class="p">:</samp><samp·class="nf">member</samp><samp·class="p"·data-group-id="0180655464-5">(</samp><samp·class="ss">loopback</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Flags</samp><samp·class="p"·data-group-id="0180655464-5">)</samp><samp·class="p">;</samp><samp·class="w"> |
| 445 | ········</samp><samp·class="p"·data-group-id=" | 445 | ········</samp><samp·class="p"·data-group-id="0180655464-6">(</samp><samp·class="p">_</samp><samp·class="p"·data-group-id="0180655464-6">)</samp><samp·class="w">·</samp><samp·class="p">-></samp><samp·class="w"> |
| 446 | ··········</samp><samp·class="ss">false</samp><samp·class="w"> | 446 | ··········</samp><samp·class="ss">false</samp><samp·class="w"> |
| 447 | ····</samp><samp·class="k">end</samp><samp·class="p"·data-group-id=" | 447 | ····</samp><samp·class="k">end</samp><samp·class="p"·data-group-id="0180655464-1">)</samp><samp·class="p">.</samp></code></pre> |
| 448 | ··</section> | 448 | ··</section> |
| 449 | </section> | 449 | </section> |
| 450 | <section·class="detail"·id="t:ifaddrs_filter_map/0"> | 450 | <section·class="detail"·id="t:ifaddrs_filter_map/0"> |
| 451 | ··<div·class="detail-header"> | 451 | ··<div·class="detail-header"> |
| 452 | ····<a·href="#t:ifaddrs_filter_map/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·type"> | 452 | ····<a·href="#t:ifaddrs_filter_map/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·type"> |
| 453 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 453 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 76, 17 lines modified | Offset 76, 17 lines modified | ||
| 76 | but·only·performs·a·new·sync·if·something·has·actually·been·logged.</p><p>If·<code·class="inline">no_repeat</code>·is·set·as·value,·the·repeated·file·sync·operation·is·disabled, | 76 | but·only·performs·a·new·sync·if·something·has·actually·been·logged.</p><p>If·<code·class="inline">no_repeat</code>·is·set·as·value,·the·repeated·file·sync·operation·is·disabled, |
| 77 | and·it·is·the·operating·system·settings·that·determine·how·quickly·or·slowly | 77 | and·it·is·the·operating·system·settings·that·determine·how·quickly·or·slowly |
| 78 | data·is·written·to·disk.·The·user·can·also·call·the·<a·href="#filesync/1"><code·class="inline">filesync/1</code></a>·function·to | 78 | data·is·written·to·disk.·The·user·can·also·call·the·<a·href="#filesync/1"><code·class="inline">filesync/1</code></a>·function·to |
| 79 | perform·a·file·sync.</p><p>Defaults·to·<code·class="inline">5000</code>·milliseconds.</p></li></ul><p>Other·configuration·parameters·exist,·to·be·used·for·customizing·the·overload | 79 | perform·a·file·sync.</p><p>Defaults·to·<code·class="inline">5000</code>·milliseconds.</p></li></ul><p>Other·configuration·parameters·exist,·to·be·used·for·customizing·the·overload |
| 80 | protection·behaviour.·The·same·parameters·are·used·both·in·the·standard·handler | 80 | protection·behaviour.·The·same·parameters·are·used·both·in·the·standard·handler |
| 81 | and·the·disk_log·handler,·and·are·documented·in·the | 81 | and·the·disk_log·handler,·and·are·documented·in·the |
| 82 | <a·href="logger_chapter.xhtml#overload_protection"><code·class="inline">User's·Guide</code></a>.</p><p>Notice·that·if·changing·the·configuration·of·the·handler·in·runtime,·the·<code·class="inline">type</code>, | 82 | <a·href="logger_chapter.xhtml#overload_protection"><code·class="inline">User's·Guide</code></a>.</p><p>Notice·that·if·changing·the·configuration·of·the·handler·in·runtime,·the·<code·class="inline">type</code>, |
| 83 | <code·class="inline">file</code>,·or·<code·class="inline">modes</code>·parameters·must·not·be·modified.</p><p>Example·of·adding·a·standard·handler:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nc">logger</samp><samp·class="p">:</samp><samp·class="nf">add_handler</samp><samp·class="p"·data-group-id=" | 83 | <code·class="inline">file</code>,·or·<code·class="inline">modes</code>·parameters·must·not·be·modified.</p><p>Example·of·adding·a·standard·handler:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nc">logger</samp><samp·class="p">:</samp><samp·class="nf">add_handler</samp><samp·class="p"·data-group-id="2209549051-1">(</samp><samp·class="ss">my_standard_h</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="ss">logger_std_h</samp><samp·class="p">,</samp><samp·class="w"> |
| 84 | ···················</samp><samp·class="p"·data-group-id=" | 84 | ···················</samp><samp·class="p"·data-group-id="2209549051-2">#{</samp><samp·class="ss">config</samp><samp·class="w">·</samp><samp·class="p">=></samp><samp·class="w">·</samp><samp·class="p"·data-group-id="2209549051-3">#{</samp><samp·class="ss">file</samp><samp·class="w">·</samp><samp·class="p">=></samp><samp·class="w">·</samp><samp·class="s">"./system_info.log"</samp><samp·class="p">,</samp><samp·class="w"> |
| 85 | ·································</samp><samp·class="ss">filesync_repeat_interval</samp><samp·class="w">·</samp><samp·class="p">=></samp><samp·class="w">·</samp><samp·class="mi">1000</samp><samp·class="p"·data-group-id=" | 85 | ·································</samp><samp·class="ss">filesync_repeat_interval</samp><samp·class="w">·</samp><samp·class="p">=></samp><samp·class="w">·</samp><samp·class="mi">1000</samp><samp·class="p"·data-group-id="2209549051-3">}</samp><samp·class="p"·data-group-id="2209549051-2">}</samp><samp·class="p"·data-group-id="2209549051-1">)</samp><samp·class="p">.</samp></code></pre><p>To·set·the·default·handler,·that·starts·initially·with·the·Kernel·application, |
| 86 | to·log·to·file·instead·of·<a·href="../../../../lib/stdlib/doc/html/io.html#t:standard_io/0"><code·class="inline">standard_io</code></a>,·change·the | 86 | to·log·to·file·instead·of·<a·href="../../../../lib/stdlib/doc/html/io.html#t:standard_io/0"><code·class="inline">standard_io</code></a>,·change·the |
| 87 | Kernel·default·logger·configuration.·Example:</p><pre><code·class="text">erl·-kernel·logger·'[{handler,default,logger_std_h, | 87 | Kernel·default·logger·configuration.·Example:</p><pre><code·class="text">erl·-kernel·logger·'[{handler,default,logger_std_h, |
| 88 | ······················#{config·=>·#{file·=>·"./log.log"}}}]'</code></pre><p>An·example·of·how·to·replace·the·standard·handler·with·a·disk_log·handler·at | 88 | ······················#{config·=>·#{file·=>·"./log.log"}}}]'</code></pre><p>An·example·of·how·to·replace·the·standard·handler·with·a·disk_log·handler·at |
| 89 | startup·is·found·in·the·<a·href="logger_disk_log_h.xhtml"><code·class="inline">logger_disk_log_h</code></a>·manual.</p><h2·id="module-see-also"·class="section-heading"> | 89 | startup·is·found·in·the·<a·href="logger_disk_log_h.xhtml"><code·class="inline">logger_disk_log_h</code></a>·manual.</p><h2·id="module-see-also"·class="section-heading"> |
| 90 | ··<a·href="#module-see-also"·class="hover-link"> | 90 | ··<a·href="#module-see-also"·class="hover-link"> |
| 91 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 91 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 92 | ··</a> | 92 | ··</a> |
| Offset 55, 20 lines modified | Offset 55, 20 lines modified | ||
| 55 | sync·if·something·has·actually·been·logged.</p><p>Defaults·to·<code·class="inline">5000</code>·milliseconds.</p><p>If·<code·class="inline">no_repeat</code>·is·set·as·value,·the·repeated·sync·operation·is·disabled.·The | 55 | sync·if·something·has·actually·been·logged.</p><p>Defaults·to·<code·class="inline">5000</code>·milliseconds.</p><p>If·<code·class="inline">no_repeat</code>·is·set·as·value,·the·repeated·sync·operation·is·disabled.·The |
| 56 | user·can·also·call·the·<a·href="#filesync/1"><code·class="inline">filesync/1</code></a>·function·to·perform·a | 56 | user·can·also·call·the·<a·href="#filesync/1"><code·class="inline">filesync/1</code></a>·function·to·perform·a |
| 57 | disk_log·sync.</p></li></ul><p>Other·configuration·parameters·exist,·to·be·used·for·customizing·the·overload | 57 | disk_log·sync.</p></li></ul><p>Other·configuration·parameters·exist,·to·be·used·for·customizing·the·overload |
| 58 | protection·behaviour.·The·same·parameters·are·used·both·in·the·standard·handler | 58 | protection·behaviour.·The·same·parameters·are·used·both·in·the·standard·handler |
| 59 | and·the·disk_log·handler,·and·are·documented·in·the | 59 | and·the·disk_log·handler,·and·are·documented·in·the |
| 60 | <a·href="logger_chapter.xhtml#overload_protection"><code·class="inline">User's·Guide</code></a>.</p><p>Notice·that·when·changing·the·configuration·of·the·handler·in·runtime,·the | 60 | <a·href="logger_chapter.xhtml#overload_protection"><code·class="inline">User's·Guide</code></a>.</p><p>Notice·that·when·changing·the·configuration·of·the·handler·in·runtime,·the |
| 61 | disk_log·options·(<code·class="inline">file</code>,·<code·class="inline">type</code>,·<code·class="inline">max_no_files</code>,·<code·class="inline">max_no_bytes</code>)·must·not·be | 61 | disk_log·options·(<code·class="inline">file</code>,·<code·class="inline">type</code>,·<code·class="inline">max_no_files</code>,·<code·class="inline">max_no_bytes</code>)·must·not·be |
| 62 | modified.</p><p>Example·of·adding·a·disk_log·handler:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nc">logger</samp><samp·class="p">:</samp><samp·class="nf">add_handler</samp><samp·class="p"·data-group-id=" | 62 | modified.</p><p>Example·of·adding·a·disk_log·handler:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nc">logger</samp><samp·class="p">:</samp><samp·class="nf">add_handler</samp><samp·class="p"·data-group-id="2684117007-1">(</samp><samp·class="ss">my_disk_log_h</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="ss">logger_disk_log_h</samp><samp·class="p">,</samp><samp·class="w"> |
| 63 | ···················</samp><samp·class="p"·data-group-id=" | 63 | ···················</samp><samp·class="p"·data-group-id="2684117007-2">#{</samp><samp·class="ss">config</samp><samp·class="w">·</samp><samp·class="p">=></samp><samp·class="w">·</samp><samp·class="p"·data-group-id="2684117007-3">#{</samp><samp·class="ss">file</samp><samp·class="w">·</samp><samp·class="p">=></samp><samp·class="w">·</samp><samp·class="s">"./my_disk_log"</samp><samp·class="p">,</samp><samp·class="w"> |
| 64 | ·································</samp><samp·class="ss">type</samp><samp·class="w">·</samp><samp·class="p">=></samp><samp·class="w">·</samp><samp·class="ss">wrap</samp><samp·class="p">,</samp><samp·class="w"> | 64 | ·································</samp><samp·class="ss">type</samp><samp·class="w">·</samp><samp·class="p">=></samp><samp·class="w">·</samp><samp·class="ss">wrap</samp><samp·class="p">,</samp><samp·class="w"> |
| 65 | ·································</samp><samp·class="ss">max_no_files</samp><samp·class="w">·</samp><samp·class="p">=></samp><samp·class="w">·</samp><samp·class="mi">4</samp><samp·class="p">,</samp><samp·class="w"> | 65 | ·································</samp><samp·class="ss">max_no_files</samp><samp·class="w">·</samp><samp·class="p">=></samp><samp·class="w">·</samp><samp·class="mi">4</samp><samp·class="p">,</samp><samp·class="w"> |
| 66 | ·································</samp><samp·class="ss">max_no_bytes</samp><samp·class="w">·</samp><samp·class="p">=></samp><samp·class="w">·</samp><samp·class="mi">10000</samp><samp·class="p">,</samp><samp·class="w"> | 66 | ·································</samp><samp·class="ss">max_no_bytes</samp><samp·class="w">·</samp><samp·class="p">=></samp><samp·class="w">·</samp><samp·class="mi">10000</samp><samp·class="p">,</samp><samp·class="w"> |
| 67 | ·································</samp><samp·class="ss">filesync_repeat_interval</samp><samp·class="w">·</samp><samp·class="p">=></samp><samp·class="w">·</samp><samp·class="mi">1000</samp><samp·class="p"·data-group-id=" | 67 | ·································</samp><samp·class="ss">filesync_repeat_interval</samp><samp·class="w">·</samp><samp·class="p">=></samp><samp·class="w">·</samp><samp·class="mi">1000</samp><samp·class="p"·data-group-id="2684117007-3">}</samp><samp·class="p"·data-group-id="2684117007-2">}</samp><samp·class="p"·data-group-id="2684117007-1">)</samp><samp·class="p">.</samp></code></pre><p>To·use·the·disk_log·handler·instead·of·the·default·standard·handler·when |
| 68 | starting·an·Erlang·node,·change·the·Kernel·default·logger·to·use | 68 | starting·an·Erlang·node,·change·the·Kernel·default·logger·to·use |
| 69 | <code·class="inline">logger_disk_log_h</code>.·Example:</p><pre><code·class="text">erl·-kernel·logger·'[{handler,default,logger_disk_log_h, | 69 | <code·class="inline">logger_disk_log_h</code>.·Example:</p><pre><code·class="text">erl·-kernel·logger·'[{handler,default,logger_disk_log_h, |
| 70 | ······················#{config·=>·#{file·=>·"./system_disk_log"}}}]'</code></pre><h2·id="module-see-also"·class="section-heading"> | 70 | ······················#{config·=>·#{file·=>·"./system_disk_log"}}}]'</code></pre><h2·id="module-see-also"·class="section-heading"> |
| 71 | ··<a·href="#module-see-also"·class="hover-link"> | 71 | ··<a·href="#module-see-also"·class="hover-link"> |
| 72 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 72 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 73 | ··</a> | 73 | ··</a> |
| 74 | ··<span·class="text">See·Also</span> | 74 | ··<span·class="text">See·Also</span> |
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| 23 | ······<section·id="moduledoc"·class="docstring"> | 23 | ······<section·id="moduledoc"·class="docstring"> |
| 24 | <p>Grouping·nodes·to·global·name·registration·groups.</p><p>This·module·makes·it·possible·to·partition·the·nodes·of·a·system·into·<em>global | 24 | <p>Grouping·nodes·to·global·name·registration·groups.</p><p>This·module·makes·it·possible·to·partition·the·nodes·of·a·system·into·<em>global |
| 25 | groups</em>.·Each·global·group·has·its·own·global·namespace,·see·<a·href="global.xhtml"><code·class="inline">global</code></a>.</p><p>The·main·advantage·of·dividing·systems·into·global·groups·is·that·the·background | 25 | groups</em>.·Each·global·group·has·its·own·global·namespace,·see·<a·href="global.xhtml"><code·class="inline">global</code></a>.</p><p>The·main·advantage·of·dividing·systems·into·global·groups·is·that·the·background |
| 26 | load·decreases·while·the·number·of·nodes·to·be·updated·is·reduced·when | 26 | load·decreases·while·the·number·of·nodes·to·be·updated·is·reduced·when |
| 27 | manipulating·globally·registered·names.</p><p>The·Kernel·configuration·parameter·<a·href="kernel_app.xhtml#global_groups"><code·class="inline">global_groups</code></a> | 27 | manipulating·globally·registered·names.</p><p>The·Kernel·configuration·parameter·<a·href="kernel_app.xhtml#global_groups"><code·class="inline">global_groups</code></a> |
| 28 | defines·the·global·groups:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id=" | 28 | defines·the·global·groups:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id="4017048717-1">{</samp><samp·class="ss">global_groups</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="p"·data-group-id="4017048717-2">[</samp><samp·class="n">GroupTuple</samp><samp·class="w">·</samp><samp·class="p">:</samp><samp·class="p"[·...·truncated·by·diffoscope;·len:·268,·SHA:·2dec6398f79120f06a0a8a76b7e49b2cfc7c79e385d00362fcad5625375afabe·...·]-1">}</samp></code></pre><p>For·the·processes·and·nodes·to·run·smoothly·using·the·global·group |
| 29 | functionality,·the·following·criteria·must·be·met:</p><ul><li>An·instance·of·the·global·group·server,·<code·class="inline">global_group</code>,·must·be·running·on | 29 | functionality,·the·following·criteria·must·be·met:</p><ul><li>An·instance·of·the·global·group·server,·<code·class="inline">global_group</code>,·must·be·running·on |
| 30 | each·node.·The·processes·are·automatically·started·and·synchronized·when·a | 30 | each·node.·The·processes·are·automatically·started·and·synchronized·when·a |
| 31 | node·is·started.</li><li>All·involved·nodes·must·agree·on·the·global·group·definition,·otherwise·the | 31 | node·is·started.</li><li>All·involved·nodes·must·agree·on·the·global·group·definition,·otherwise·the |
| 32 | behavior·of·the·system·is·undefined.</li><li><em>All</em>·nodes·in·the·system·must·belong·to·exactly·one·global·group.</li></ul><p>In·the·following·descriptions,·a·<em>group·node</em>·is·a·node·belonging·to·the·same | 32 | behavior·of·the·system·is·undefined.</li><li><em>All</em>·nodes·in·the·system·must·belong·to·exactly·one·global·group.</li></ul><p>In·the·following·descriptions,·a·<em>group·node</em>·is·a·node·belonging·to·the·same |
| 33 | global·group·as·the·local·node.</p><h2·id="module-notes"·class="section-heading"> | 33 | global·group·as·the·local·node.</p><h2·id="module-notes"·class="section-heading"> |
| 34 | ··<a·href="#module-notes"·class="hover-link"> | 34 | ··<a·href="#module-notes"·class="hover-link"> |
| 35 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 35 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 803 | time-to-live·(TTL)·for·outgoing·multicast·datagrams·to·control·the·scope·of | 803 | time-to-live·(TTL)·for·outgoing·multicast·datagrams·to·control·the·scope·of |
| 804 | the·multicasts.</p><p>Datagrams·with·a·TTL·of·1·are·not·forwarded·beyond·the·local·network. | 804 | the·multicasts.</p><p>Datagrams·with·a·TTL·of·1·are·not·forwarded·beyond·the·local·network. |
| 805 | Defaults·to·<code·class="inline">1</code>.</p></li><li><p><strong><code·class="inline">{add_membership, {MultiAddress, InterfaceAddress}}</code></strong>·- | 805 | Defaults·to·<code·class="inline">1</code>.</p></li><li><p><strong><code·class="inline">{add_membership, {MultiAddress, InterfaceAddress}}</code></strong>·- |
| 806 | Joins·a·multicast·group.</p></li><li><p><strong><code·class="inline">{drop_membership, {MultiAddress, InterfaceAddress}}</code></strong>·- | 806 | Joins·a·multicast·group.</p></li><li><p><strong><code·class="inline">{drop_membership, {MultiAddress, InterfaceAddress}}</code></strong>·- |
| 807 | Leaves·a·multicast·group.</p></li><li><p><strong><a·href="#t:option/0"><code·class="inline">option/0</code></a></strong>·-·See·<a·href="inet.xhtml#setopts/2"><code·class="inline">inet:setopts/2</code></a>.</p></li></ul><p>UDP·packets·are·sent·with·this·socket·using·<a·href="#send/3"><code·class="inline">send(Socket, ...)</code></a>. | 807 | Leaves·a·multicast·group.</p></li><li><p><strong><a·href="#t:option/0"><code·class="inline">option/0</code></a></strong>·-·See·<a·href="inet.xhtml#setopts/2"><code·class="inline">inet:setopts/2</code></a>.</p></li></ul><p>UDP·packets·are·sent·with·this·socket·using·<a·href="#send/3"><code·class="inline">send(Socket, ...)</code></a>. |
| 808 | When·UDP·packets·arrive·to·the·<code·class="inline">Socket</code>'s·UDP·port,·and·the·socket·is·in | 808 | When·UDP·packets·arrive·to·the·<code·class="inline">Socket</code>'s·UDP·port,·and·the·socket·is·in |
| 809 | an·<em>active·mode</em>,·the·packets·are·delivered·as·messages·to·the | 809 | an·<em>active·mode</em>,·the·packets·are·delivered·as·messages·to·the |
| 810 | controlling·process·(socket·owner):</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id=" | 810 | controlling·process·(socket·owner):</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id="1968764188-1">{</samp><samp·class="ss">udp</samp><samp·class="p">,</samp><samp·class="err"> </samp><samp·class="n">Socket</samp><samp·class="p">,</samp><samp·class="err"> </samp><samp·class="n">PeerIP</samp><samp·class="p">,</samp><samp·class="err"> </samp[·...·truncated·by·diffoscope;·len:·152,·SHA:·0d886b56063cf4aae74488226b376ba9a82d50251915f92550d762b85b3b69d1·...·]-1">}</samp><samp·class="w">·</samp><samp·class="c1">%·Without·ancillary·data</samp><samp·class="w"> |
| 811 | </samp><samp·class="p"·data-group-id=" | 811 | </samp><samp·class="p"·data-group-id="1968764188-2">{</samp><samp·class="ss">udp</samp><samp·class="p">,</samp><samp·class="err"> </samp><samp·class="n">Socket</samp><samp·class="p">,</samp><samp·class="err"> </samp><samp·class="n">PeerIP</samp><samp·class="p">,</samp><samp·class="err"> </samp[·...·truncated·by·diffoscope;·len:·232,·SHA:·35da52416303316cc2961e1af9007947ec63d267a5a3b7dc6aff52305913f0e3·...·]-2">}</samp><samp·class="w">·</samp><samp·class="c1">%·With·ancillary·data</samp></code></pre><p><code·class="inline">PeerIP</code>·and·<code·class="inline">PeerPort</code>·are·the·address·from·which·<code·class="inline">Packet</code>·was·sent. |
| 812 | <code·class="inline">Packet</code>·is·a·list·of·bytes·(<code·class="inline">[</code><a·href="../../../../lib/../erts/doc/html/erlang.html#t:byte/0"><code·class="inline">byte/0</code></a><code·class="inline">]</code>·if·option·<code·class="inline">list</code> | 812 | <code·class="inline">Packet</code>·is·a·list·of·bytes·(<code·class="inline">[</code><a·href="../../../../lib/../erts/doc/html/erlang.html#t:byte/0"><code·class="inline">byte/0</code></a><code·class="inline">]</code>·if·option·<code·class="inline">list</code> |
| 813 | is·active·and·a·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:binary/0"><code·class="inline">binary/0</code></a>·if·option·<code·class="inline">binary</code>is·active | 813 | is·active·and·a·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:binary/0"><code·class="inline">binary/0</code></a>·if·option·<code·class="inline">binary</code>is·active |
| 814 | (they·are·mutually·exclusive).</p><p>The·message·contains·an·<code·class="inline">AncData</code>·field·only·if·any·of·the·socket | 814 | (they·are·mutually·exclusive).</p><p>The·message·contains·an·<code·class="inline">AncData</code>·field·only·if·any·of·the·socket |
| 815 | <a·href="#t:option/0">options</a>·<a·href="inet.xhtml#option-recvtos"><code·class="inline">recvtos</code></a>, | 815 | <a·href="#t:option/0">options</a>·<a·href="inet.xhtml#option-recvtos"><code·class="inline">recvtos</code></a>, |
| 816 | <a·href="inet.xhtml#option-recvtclass"><code·class="inline">recvtclass</code></a>·or | 816 | <a·href="inet.xhtml#option-recvtclass"><code·class="inline">recvtclass</code></a>·or |
| 817 | <a·href="inet.xhtml#option-recvttl"><code·class="inline">recvttl</code></a>·are·active.</p><p>When·a·socket·in·<code·class="inline">{active, N}</code>·mode·(see·<a·href="inet.xhtml#setopts/2"><code·class="inline">inet:setopts/2</code></a>·for·details), | 817 | <a·href="inet.xhtml#option-recvttl"><code·class="inline">recvttl</code></a>·are·active.</p><p>When·a·socket·in·<code·class="inline">{active, N}</code>·mode·(see·<a·href="inet.xhtml#setopts/2"><code·class="inline">inet:setopts/2</code></a>·for·details), |
| 818 | transitions·to·passive·(<code·class="inline">{active, false}</code>)·mode·(<code·class="inline">N</code>·counts·down·to·<code·class="inline">0</code>), | 818 | transitions·to·passive·(<code·class="inline">{active, false}</code>)·mode·(<code·class="inline">N</code>·counts·down·to·<code·class="inline">0</code>), |
| 819 | the·controlling·process·is·notified·by·a·message·on·this·form:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id=" | 819 | the·controlling·process·is·notified·by·a·message·on·this·form:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id="0915739081-1">{</samp><samp·class="ss">udp_passive</samp><samp·class="p">,</samp><samp·class="err"> </samp><samp·class="n">Socket</samp><samp·class="p"·data-group-id="0915739081-1">}</samp></code></pre><p>If·the·OS·protocol·stack·reports·an·error·for·the·socket,·the·following |
| 820 | message·is·sent·to·the·controlling·process:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id=" | 820 | message·is·sent·to·the·controlling·process:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id="6553301171-1">{</samp><samp·class="ss">udp_error</samp><samp·class="p">,</samp><samp·class="err"> </samp><samp·class="n">Socket</samp><samp·class="p">,</samp><samp·class="err"> </samp><samp·class="n">Reason</samp><samp·class="p"·data-group-id="6553301171-1">}</samp></code></pre><p><code·class="inline">Reason</code>·is·mostly·a·<a·href="inet.xhtml#posix-error-codes">POSIX·Error·Code</a>.</p><p>If·the·socket·is·in·<em>passive·mode</em>·(not·in·an·<em>active·mode</em>),·received·data |
| 821 | can·be·retrieved·with·the<code·class="inline">recv/2,3</code>](<a·href="#recv/2"><code·class="inline">recv/2</code></a>)·calls.·Note·that·incoming | 821 | can·be·retrieved·with·the<code·class="inline">recv/2,3</code>](<a·href="#recv/2"><code·class="inline">recv/2</code></a>)·calls.·Note·that·incoming |
| 822 | UDP·packets·that·are·longer·than·the·receive·buffer·option·specifies | 822 | UDP·packets·that·are·longer·than·the·receive·buffer·option·specifies |
| 823 | can·be·truncated·without·warning.</p><p>The·default·value·for·the·receive·buffer·option·is·<code·class="inline">{recbuf, 8192}</code>.</p> | 823 | can·be·truncated·without·warning.</p><p>The·default·value·for·the·receive·buffer·option·is·<code·class="inline">{recbuf, 8192}</code>.</p> |
| 824 | ··</section> | 824 | ··</section> |
| 825 | </section> | 825 | </section> |
| 826 | <section·class="detail"·id="recv/2"> | 826 | <section·class="detail"·id="recv/2"> |
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| 235 | ···················Reason·::·address·|·<a·href="file.xhtml#t:posix/0">file:posix</a>().</pre> | 235 | ···················Reason·::·address·|·<a·href="file.xhtml#t:posix/0">file:posix</a>().</pre> |
| 236 | ······</div> | 236 | ······</div> |
| 237 | <p>Called·by·<a·href="net_adm.xhtml"><code·class="inline">net_adm:names/0</code></a>.·<code·class="inline">Host</code>·defaults·to·the·localhost. | 237 | <p>Called·by·<a·href="net_adm.xhtml"><code·class="inline">net_adm:names/0</code></a>.·<code·class="inline">Host</code>·defaults·to·the·localhost. |
| 238 | Returns·the·names·and·associated·port·numbers·of·the·Erlang·nodes·that·<code·class="inline">epmd</code> | 238 | Returns·the·names·and·associated·port·numbers·of·the·Erlang·nodes·that·<code·class="inline">epmd</code> |
| 239 | registered·at·the·specified·host.·Returns·<code·class="inline">{error,·address}</code>·if·<code·class="inline">epmd</code>·is·not | 239 | registered·at·the·specified·host.·Returns·<code·class="inline">{error,·address}</code>·if·<code·class="inline">epmd</code>·is·not |
| 240 | operational.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><samp·class="gp·unselectable">(arne@dunn)1>·</samp><samp·class="nc">erl_epmd</samp><samp·class="p">:</samp><samp·class="nf">names</samp><samp·class="p"·data-group-id=" | 240 | operational.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><samp·class="gp·unselectable">(arne@dunn)1>·</samp><samp·class="nc">erl_epmd</samp><samp·class="p">:</samp><samp·class="nf">names</samp><samp·class="p"·data-group-id="9173250371-1">(</samp><samp·class="ss">localhost</samp><samp·class="p"·data-group-id="9173250371-1">)</samp><samp·class="p">.</samp><samp·class="w"> |
| 241 | </samp><samp·class="p"·data-group-id=" | 241 | </samp><samp·class="p"·data-group-id="9173250371-2">{</samp><samp·class="ss">ok</samp><samp·class="p">,</samp><samp·class="p"·data-group-id="9173250371-3">[</samp><samp·class="p"·data-group-id="9173250371-4">{</samp><samp·class="s">"arne"</samp><samp·class="p">,</samp><samp·class="mi[·...·truncated·by·diffoscope;·len:·161,·SHA:·e7c354a18b57fca539a391cdbab7200180b241ff2759e83e5f1a24cfa85cf317·...·]-2">}</samp></code></pre> |
| 242 | ··</section> | 242 | ··</section> |
| 243 | </section> | 243 | </section> |
| 244 | <section·class="detail"·id="port_please/2"> | 244 | <section·class="detail"·id="port_please/2"> |
| 245 | ··<div·class="detail-header"> | 245 | ··<div·class="detail-header"> |
| 246 | ····<a·href="#port_please/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 246 | ····<a·href="#port_please/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 247 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 247 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 43 | (see·<a·href="../../../../lib/../erts/doc/html/erl_cmd.xhtml"><code·class="inline">erts:erl(1)</code></a>).</p><p>The·value·of·a·configuration·parameter·is·retrieved·by·calling | 43 | (see·<a·href="../../../../lib/../erts/doc/html/erl_cmd.xhtml"><code·class="inline">erts:erl(1)</code></a>).</p><p>The·value·of·a·configuration·parameter·is·retrieved·by·calling |
| 44 | <code·class="inline">application:get_env/1,2</code>.</p><h2·id="file-syntax"·class="section-heading"> | 44 | <code·class="inline">application:get_env/1,2</code>.</p><h2·id="file-syntax"·class="section-heading"> |
| 45 | ··<a·href="#file-syntax"·class="hover-link"> | 45 | ··<a·href="#file-syntax"·class="hover-link"> |
| 46 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 46 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 47 | ··</a> | 47 | ··</a> |
| 48 | ··<span·class="text">File·Syntax</span> | 48 | ··<span·class="text">File·Syntax</span> |
| 49 | </h2> | 49 | </h2> |
| 50 | <p>The·configuration·file·is·to·be·called·<code·class="inline">Name.config</code>,·where·<code·class="inline">Name</code>·is·any·name.</p><p>File·<code·class="inline">.config</code>·contains·a·single·Erlang·term·and·has·the·following·syntax:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 50 | <p>The·configuration·file·is·to·be·called·<code·class="inline">Name.config</code>,·where·<code·class="inline">Name</code>·is·any·name.</p><p>File·<code·class="inline">.config</code>·contains·a·single·Erlang·term·and·has·the·following·syntax:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="3690474482-1">[</span><span·class="p"·data-group-id="3690474482-2">{</span><span·class="n">Application1</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3690474482-3">[</span><span·class="p"·data-group-id="3690474482-4">[·...·truncated·by·diffoscope;·len:·379,·SHA:·5decfd37431e52694164c1c6172bf2f2d9fe3cb7af81d8408062a2b016f1fcea·...·]-2">}</span><span·class="p">,</span><span·class="w"> |
| 51 | ·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 51 | ·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 52 | ·</span><span·class="p"·data-group-id=" | 52 | ·</span><span·class="p"·data-group-id="3690474482-5">{</span><span·class="n">ApplicationN</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3690474482-6">[</span><span·class="p"·data-group-id="3690474482-7">{</span><span·class="n">ParN1</span><span·class="p">,[·...·truncated·by·diffoscope;·len:·379,·SHA:·1fdce91ec5210b63ebcdbeeb489dd08d7b62210d14f9b7404e63374f53262c52·...·]-1">]</span><span·class="p">.</span></code></pre><ul><li><p><strong><code·class="inline">Application·=·atom()</code></strong>·-·Application·name.</p></li><li><p><strong><code·class="inline">Par·=·atom()</code></strong>·-·Name·of·a·configuration·parameter.</p></li><li><p><strong><code·class="inline">Val·=·term()</code></strong>·-·Value·of·a·configuration·parameter.</p></li></ul><h2·id="sys-config"·class="section-heading"> |
| 53 | ··<a·href="#sys-config"·class="hover-link"> | 53 | ··<a·href="#sys-config"·class="hover-link"> |
| 54 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 54 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 55 | ··</a> | 55 | ··</a> |
| 56 | ··<span·class="text">sys.config</span> | 56 | ··<span·class="text">sys.config</span> |
| 57 | </h2> | 57 | </h2> |
| 58 | <p>When·starting·Erlang·in·embedded·mode,·it·is·assumed·that·exactly·one·system | 58 | <p>When·starting·Erlang·in·embedded·mode,·it·is·assumed·that·exactly·one·system |
| 59 | configuration·file·is·used,·named·<code·class="inline">sys.config</code>.·This·file·is·to·be·located·in | 59 | configuration·file·is·used,·named·<code·class="inline">sys.config</code>.·This·file·is·to·be·located·in |
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| 1465 | distributed.·The·argument·overrides·the·value·for·the·application·in·the·Kernel | 1465 | distributed.·The·argument·overrides·the·value·for·the·application·in·the·Kernel |
| 1466 | configuration·parameter·<code·class="inline">distributed</code>.·<code·class="inline">Application</code>·must·be·the·application | 1466 | configuration·parameter·<code·class="inline">distributed</code>.·<code·class="inline">Application</code>·must·be·the·application |
| 1467 | name·(same·as·in·the·first·argument).·If·a·node·crashes·and·<code·class="inline">Time</code>·is·specified, | 1467 | name·(same·as·in·the·first·argument).·If·a·node·crashes·and·<code·class="inline">Time</code>·is·specified, |
| 1468 | the·application·controller·waits·for·<code·class="inline">Time</code>·milliseconds·before·attempting·to | 1468 | the·application·controller·waits·for·<code·class="inline">Time</code>·milliseconds·before·attempting·to |
| 1469 | restart·the·application·on·another·node.·If·<code·class="inline">Time</code>·is·not·specified,·it·defaults | 1469 | restart·the·application·on·another·node.·If·<code·class="inline">Time</code>·is·not·specified,·it·defaults |
| 1470 | to·<code·class="inline">0</code>·and·the·application·is·restarted·immediately.</p><p><code·class="inline">Nodes</code>·is·a·list·of·node·names·where·the·application·can·run,·in·priority·from | 1470 | to·<code·class="inline">0</code>·and·the·application·is·restarted·immediately.</p><p><code·class="inline">Nodes</code>·is·a·list·of·node·names·where·the·application·can·run,·in·priority·from |
| 1471 | left·to·right.·Node·names·can·be·grouped·using·tuples·to·indicate·that·they·have | 1471 | left·to·right.·Node·names·can·be·grouped·using·tuples·to·indicate·that·they·have |
| 1472 | the·same·priority.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><samp·class="n">Nodes</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="p"·data-group-id=" | 1472 | the·same·priority.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><samp·class="n">Nodes</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="p"·data-group-id="2279995273-1">[</samp><samp·class="ss">cp1@cave</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="p"·data-group-id="2279995273-2">{</samp><samp·class="ss">cp2@cave</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="ss">cp3@[·...·truncated·by·diffoscope;·len:·105,·SHA:·f938f5c0b62409f078373903fbd731562043068d1281637f9567e8a581a300fc·...·]-1">]</samp></code></pre><p>This·means·that·the·application·is·preferably·to·be·started·at·<code·class="inline">cp1@cave</code>.·If |
| 1473 | <code·class="inline">cp1@cave</code>·is·down,·the·application·is·to·be·started·at·<code·class="inline">cp2@cave</code>·or | 1473 | <code·class="inline">cp1@cave</code>·is·down,·the·application·is·to·be·started·at·<code·class="inline">cp2@cave</code>·or |
| 1474 | <code·class="inline">cp3@cave</code>.</p><p>If·<code·class="inline">Distributed·==·default</code>,·the·value·for·the·application·in·the·Kernel | 1474 | <code·class="inline">cp3@cave</code>.</p><p>If·<code·class="inline">Distributed·==·default</code>,·the·value·for·the·application·in·the·Kernel |
| 1475 | configuration·parameter·<code·class="inline">distributed</code>·is·used.</p> | 1475 | configuration·parameter·<code·class="inline">distributed</code>·is·used.</p> |
| 1476 | ··</section> | 1476 | ··</section> |
| 1477 | </section> | 1477 | </section> |
| 1478 | <section·class="detail"·id="loaded_applications/0"> | 1478 | <section·class="detail"·id="loaded_applications/0"> |
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| 126 | ··</h1> | 126 | ··</h1> |
| 127 | ····<section·id="moduledoc"> | 127 | ····<section·id="moduledoc"> |
| 128 | <p>API·module·for·Logger,·the·standard·logging·facility·in·Erlang/OTP.</p><p>This·module·implements·the·main·API·for·logging·in·Erlang/OTP.·To·create·a·log | 128 | <p>API·module·for·Logger,·the·standard·logging·facility·in·Erlang/OTP.</p><p>This·module·implements·the·main·API·for·logging·in·Erlang/OTP.·To·create·a·log |
| 129 | event,·use·the·<a·href="#logging-api-functions">API·functions</a>·or·the·log | 129 | event,·use·the·<a·href="#logging-api-functions">API·functions</a>·or·the·log |
| 130 | <a·href="#module-macros">macros</a>,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">?</span><span·class="n">LOG_ERROR</span><span·class="p"·data-group-id=" | 130 | <a·href="#module-macros">macros</a>,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">?</span><span·class="n">LOG_ERROR</span><span·class="p"·data-group-id="7213510336-1">(</span><span·class="s">"error·happened·because:·</span><span·class="si">~p</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7213510336-2">[</span><span·class="n">Reason</s[·...·truncated·by·diffoscope;·len:·98,·SHA:·9e118bb4f295aa9919cc6b5ec23d494f4529a048dab43f5d36e7147f1127d7b7·...·]-1">)</span><span·class="p">.</span><span·class="w">···</span><span·class="c1">%·With·macro</span><span·class="w"> |
| 131 | </span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">error</span><span·class="p"·data-group-id=" | 131 | </span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">error</span><span·class="p"·data-group-id="7213510336-3">(</span><span·class="s">"error·happened·because:·</span><span·class="si">~p</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7213510336-4">[</span><span·class="n">Reason</s[·...·truncated·by·diffoscope;·len:·98,·SHA:·2013bc3e69db7c0d72040da514e4759829b77b7d69202e42e78cc4f7b9abe350·...·]-3">)</span><span·class="p">.</span><span·class="w">·</span><span·class="c1">%·Without·macro</span></code></pre><p>To·configure·the·Logger·backend,·use |
| 132 | <a·href="kernel_app.html#logger">Kernel·configuration·parameters</a>·or | 132 | <a·href="kernel_app.html#logger">Kernel·configuration·parameters</a>·or |
| 133 | <a·href="#configuration-api-functions">configuration·functions</a>·in·the·Logger·API.</p><p>By·default,·the·Kernel·application·installs·one·log·handler·at·system·start. | 133 | <a·href="#configuration-api-functions">configuration·functions</a>·in·the·Logger·API.</p><p>By·default,·the·Kernel·application·installs·one·log·handler·at·system·start. |
| 134 | This·handler·is·named·<code·class="inline">default</code>.·It·receives·and·processes·standard·log·events | 134 | This·handler·is·named·<code·class="inline">default</code>.·It·receives·and·processes·standard·log·events |
| 135 | produced·by·the·Erlang·runtime·system,·standard·behaviours·and·different | 135 | produced·by·the·Erlang·runtime·system,·standard·behaviours·and·different |
| 136 | Erlang/OTP·applications.·The·log·events·are·by·default·printed·to·the·terminal.</p><p>If·you·want·your·systems·logs·to·be·printed·to·a·file·instead,·you·must | 136 | Erlang/OTP·applications.·The·log·events·are·by·default·printed·to·the·terminal.</p><p>If·you·want·your·systems·logs·to·be·printed·to·a·file·instead,·you·must |
| 137 | configure·the·default·handler·to·do·so.·The·simplest·way·is·to·include·the | 137 | configure·the·default·handler·to·do·so.·The·simplest·way·is·to·include·the |
| 138 | following·in·your·<a·href="config.html"><code·class="inline">sys.config</code></a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 138 | following·in·your·<a·href="config.html"><code·class="inline">sys.config</code></a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="7008049124-1">[</span><span·class="p"·data-group-id="7008049124-2">{</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="w"> |
| 139 | ··</span><span·class="p"·data-group-id=" | 139 | ··</span><span·class="p"·data-group-id="7008049124-3">[</span><span·class="p"·data-group-id="7008049124-4">{</span><span·class="ss">logger</span><span·class="p">,</span><span·class="w"> |
| 140 | ····</span><span·class="p"·data-group-id=" | 140 | ····</span><span·class="p"·data-group-id="7008049124-5">[</span><span·class="p"·data-group-id="7008049124-6">{</span><span·class="ss">handler</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">default</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">logger_std_h</span><span·class="p">,</span><span·class="w"> |
| 141 | ······</span><span·class="p"·data-group-id=" | 141 | ······</span><span·class="p"·data-group-id="7008049124-7">#{</span><span·class="ss">config</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="7008049124-8">#{</span><span·class="ss">file</span><span·class="w">·</span><span·class="p">=>[·...·truncated·by·diffoscope;·len:·494,·SHA:·9c6359480b9c68a3c9221f4a4b0cdf61d5eb5f4ad5e88e06cc4d95e2002f78d4·...·]-1">]</span><span·class="p">.</span></code></pre><p>For·more·information·about:</p><ul><li>the·Logger·facility·in·general,·see·the·<a·href="logger_chapter.html">User's·Guide</a>.</li><li>how·to·configure·Logger,·see·the |
| 142 | <a·href="logger_chapter.html#configuration">Configuration</a>·section·in·the·User's·Guide.</li><li>the·built-in·handlers,·see·<a·href="logger_std_h.html"><code·class="inline">logger_std_h</code></a>·and·<a·href="logger_disk_log_h.html"><code·class="inline">logger_disk_log_h</code></a>.</li><li>the·built-in·formatter,·see·<a·href="logger_formatter.html"><code·class="inline">logger_formatter</code></a>.</li><li>built-in·filters,·see·<a·href="logger_filters.html"><code·class="inline">logger_filters</code></a>.</li></ul><h2·id="module-macros"·class="section-heading"> | 142 | <a·href="logger_chapter.html#configuration">Configuration</a>·section·in·the·User's·Guide.</li><li>the·built-in·handlers,·see·<a·href="logger_std_h.html"><code·class="inline">logger_std_h</code></a>·and·<a·href="logger_disk_log_h.html"><code·class="inline">logger_disk_log_h</code></a>.</li><li>the·built-in·formatter,·see·<a·href="logger_formatter.html"><code·class="inline">logger_formatter</code></a>.</li><li>built-in·filters,·see·<a·href="logger_filters.html"><code·class="inline">logger_filters</code></a>.</li></ul><h2·id="module-macros"·class="section-heading"> |
| 143 | ··<a·href="#module-macros"·class="hover-link"> | 143 | ··<a·href="#module-macros"·class="hover-link"> |
| 144 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 144 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 145 | ··</a> | 145 | ··</a> |
| 146 | ··<span·class="text">Macros</span> | 146 | ··<span·class="text">Macros</span> |
| 147 | </h2> | 147 | </h2> |
| 148 | <p>The·following·macros·are·defined·in·<code·class="inline">logger.hrl</code>,·which·is·included·in·a·module | 148 | <p>The·following·macros·are·defined·in·<code·class="inline">logger.hrl</code>,·which·is·included·in·a·module |
| 149 | with·the·directive</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">····</span><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id=" | 149 | with·the·directive</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">····</span><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="5936994094-1">(</span><span·class="s">"kernel/include/logger.hrl"</span><span·class="p"·data-group-id="5936994094-1">)</span><span·class="p">.</span></code></pre><ul><li><code·class="inline">?LOG_EMERGENCY(StringOrReport[,Metadata])</code></li><li><code·class="inline">?LOG_EMERGENCY(FunOrFormat,Args[,Metadata])</code></li><li><code·class="inline">?LOG_ALERT(StringOrReport[,Metadata])</code></li><li><code·class="inline">?LOG_ALERT(FunOrFormat,Args[,Metadata])</code></li><li><code·class="inline">?LOG_CRITICAL(StringOrReport[,Metadata])</code></li><li><code·class="inline">?LOG_CRITICAL(FunOrFormat,Args[,Metadata])</code></li><li><code·class="inline">?LOG_ERROR(StringOrReport[,Metadata])</code></li><li><code·class="inline">?LOG_ERROR(FunOrFormat,Args[,Metadata])</code></li><li><code·class="inline">?LOG_WARNING(StringOrReport[,Metadata])</code></li><li><code·class="inline">?LOG_WARNING(FunOrFormat,Args[,Metadata])</code></li><li><code·class="inline">?LOG_NOTICE(StringOrReport[,Metadata])</code></li><li><code·class="inline">?LOG_NOTICE(FunOrFormat,Args[,Metadata])</code></li><li><code·class="inline">?LOG_INFO(StringOrReport[,Metadata])</code></li><li><code·class="inline">?LOG_INFO(FunOrFormat,Args[,Metadata])</code></li><li><code·class="inline">?LOG_DEBUG(StringOrReport[,Metadata])</code></li><li><code·class="inline">?LOG_DEBUG(FunOrFormat,Args[,Metadata])</code></li><li><code·class="inline">?LOG(Level,StringOrReport[,Metadata])</code></li><li><code·class="inline">?LOG(Level,FunOrFormat,Args[,Metadata])</code></li></ul><p>All·macros·expand·to·a·call·to·Logger,·where·<code·class="inline">Level</code>·is·taken·from·the·macro |
| 150 | name,·or·from·the·first·argument·in·the·case·of·the·<code·class="inline">?LOG</code>·macro.·Location·data | 150 | name,·or·from·the·first·argument·in·the·case·of·the·<code·class="inline">?LOG</code>·macro.·Location·data |
| 151 | is·added·to·the·metadata·as·described·under·the·<a·href="#t:metadata/0"><code·class="inline">metadata/0</code></a>·type·definition.</p><p>The·call·is·wrapped·in·a·case·statement·and·will·be·evaluated·only·if·<code·class="inline">Level</code>·is | 151 | is·added·to·the·metadata·as·described·under·the·<a·href="#t:metadata/0"><code·class="inline">metadata/0</code></a>·type·definition.</p><p>The·call·is·wrapped·in·a·case·statement·and·will·be·evaluated·only·if·<code·class="inline">Level</code>·is |
| 152 | equal·to·or·below·the·configured·log·level.</p><h2·id="module-see-also"·class="section-heading"> | 152 | equal·to·or·below·the·configured·log·level.</p><h2·id="module-see-also"·class="section-heading"> |
| 153 | ··<a·href="#module-see-also"·class="hover-link"> | 153 | ··<a·href="#module-see-also"·class="hover-link"> |
| 154 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 154 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 155 | ··</a> | 155 | ··</a> |
| 156 | ··<span·class="text">See·Also</span> | 156 | ··<span·class="text">See·Also</span> |
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| 2304 | ·········(Level·::·<a·href="#t:level/0">level</a>(),·Fun·::·<a·href="#t:msg_fun/0">msg_fun</a>(),·FunArgs·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>())·->·ok.</pre> | 2304 | ·········(Level·::·<a·href="#t:level/0">level</a>(),·Fun·::·<a·href="#t:msg_fun/0">msg_fun</a>(),·FunArgs·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>())·->·ok.</pre> |
| 2305 | ······</div> | 2305 | ······</div> |
| 2306 | <p>Create·a·log·event·at·the·given·<a·href="logger_chapter.html#log-level">log·level</a>,·with | 2306 | <p>Create·a·log·event·at·the·given·<a·href="logger_chapter.html#log-level">log·level</a>,·with |
| 2307 | the·given·<a·href="logger_chapter.html#log-message">message</a>·to·be·logged·and | 2307 | the·given·<a·href="logger_chapter.html#log-message">message</a>·to·be·logged·and |
| 2308 | <a·href="logger_chapter.html#metadata"><em>metadata</em></a>.</p><p><em>Example</em>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·A·plain·string</span><span·class="gp·unselectable"> | 2308 | <a·href="logger_chapter.html#metadata"><em>metadata</em></a>.</p><p><em>Example</em>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·A·plain·string</span><span·class="gp·unselectable"> |
| 2309 | 1>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">log</span><span·class="p"·data-group-id=" | 2309 | 1>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">log</span><span·class="p"·data-group-id="3809119019-1">(</span><span·class="ss">info</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"Hello·World"</span><span·class="p"·data-group-id="3809119019-1">)</span><span·class="p">.</span><span·class="w"> |
| 2310 | </span><span·class="c1">%%·A·plain·string·with·metadata</span><span·class="gp·unselectable"> | 2310 | </span><span·class="c1">%%·A·plain·string·with·metadata</span><span·class="gp·unselectable"> |
| 2311 | 2>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">log</span><span·class="p"·data-group-id=" | 2311 | 2>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">log</span><span·class="p"·data-group-id="3809119019-2">(</span><span·class="ss">debug</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"Hello·World"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3809119019-3">#{</span><span·cla[·...·truncated·by·diffoscope;·len:·265,·SHA:·17e8f8b849a7029939b78b6562d875ee5f7bdbacda749031a2930219f76064b5·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 2312 | </span><span·class="c1">%%·A·format·string·with·arguments</span><span·class="gp·unselectable"> | 2312 | </span><span·class="c1">%%·A·format·string·with·arguments</span><span·class="gp·unselectable"> |
| 2313 | 3>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">log</span><span·class="p"·data-group-id=" | 2313 | 3>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">log</span><span·class="p"·data-group-id="3809119019-4">(</span><span·class="ss">warning</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"The·roof·is·on·~ts"</span><span·class="p">,</span><span·class="p"·data-group-id="3809119019-5">[</span><span·class="n">Cause</sp[·...·truncated·by·diffoscope;·len:·97,·SHA:·0b9a8ad7af24498718250aa91b4bd62b7be8ec04b92aad1c7c030e2c71075097·...·]-4">)</span><span·class="p">.</span><span·class="w"> |
| 2314 | </span><span·class="c1">%%·A·report</span><span·class="gp·unselectable"> | 2314 | </span><span·class="c1">%%·A·report</span><span·class="gp·unselectable"> |
| 2315 | 4>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">log</span><span·class="p"·data-group-id=" | 2315 | 4>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">log</span><span·class="p"·data-group-id="3809119019-6">(</span><span·class="ss">warning</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3809119019-7">#{</span><span·class="w">·</span><span·class="ss">what</span><span·class="w">·</span><span·class="p">=></sp[·...·truncated·by·diffoscope;·len:·354,·SHA:·7811d128f53782d57558aa7f163c1d0fad87b78a92a3379139acf7b91b4aa977·...·]-6">)</span><span·class="p">.</span></code></pre><p>Equivalent·to·<a·href="#log/4"><code·class="inline">log(Level,·FormatOrFun,·Args,·#{})</code></a>·if·called·as |
| 2316 | <code·class="inline">log(Level,·FormatOrFun,·Args)</code>.</p> | 2316 | <code·class="inline">log(Level,·FormatOrFun,·Args)</code>.</p> |
| 2317 | ··</section> | 2317 | ··</section> |
| 2318 | </section> | 2318 | </section> |
| 2319 | <section·class="detail"·id="log/4"> | 2319 | <section·class="detail"·id="log/4"> |
| 2320 | ··<div·class="detail-header"> | 2320 | ··<div·class="detail-header"> |
| 2321 | ····<a·href="#log/4"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 2321 | ····<a·href="#log/4"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 2347, 20 lines modified | Offset 2347, 20 lines modified | ||
| 2347 | <p>Create·a·log·event·at·the·given·<a·href="logger_chapter.html#log-level">log·level</a>,·with | 2347 | <p>Create·a·log·event·at·the·given·<a·href="logger_chapter.html#log-level">log·level</a>,·with |
| 2348 | the·given·<a·href="logger_chapter.html#log-message">message</a>·to·be·logged·and | 2348 | the·given·<a·href="logger_chapter.html#log-message">message</a>·to·be·logged·and |
| 2349 | <a·href="logger_chapter.html#metadata"><em>metadata</em></a>.</p><p>The·message·and·metadata·can·either·be·given·directly·in·the·arguments,·or | 2349 | <a·href="logger_chapter.html#metadata"><em>metadata</em></a>.</p><p>The·message·and·metadata·can·either·be·given·directly·in·the·arguments,·or |
| 2350 | returned·from·a·fun.·Passing·a·fun·instead·of·the·message/metadata·directly·is | 2350 | returned·from·a·fun.·Passing·a·fun·instead·of·the·message/metadata·directly·is |
| 2351 | useful·in·scenarios·when·the·message/metadata·is·very·expensive·to·compute.·This | 2351 | useful·in·scenarios·when·the·message/metadata·is·very·expensive·to·compute.·This |
| 2352 | is·because·the·fun·is·only·evaluated·when·the·message/metadata·is·actually | 2352 | is·because·the·fun·is·only·evaluated·when·the·message/metadata·is·actually |
| 2353 | needed,·which·may·be·not·at·all·if·the·log·event·is·not·to·be·logged.·Examples:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·A·plain·string·with·expensive·metadata</span><span·class="gp·unselectable"> | 2353 | needed,·which·may·be·not·at·all·if·the·log·event·is·not·to·be·logged.·Examples:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·A·plain·string·with·expensive·metadata</span><span·class="gp·unselectable"> |
| 2354 | 1>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">info</span><span·class="p"·data-group-id=" | 2354 | 1>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">info</span><span·class="p"·data-group-id="6375002045-1">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="6375002045-2">(</span><span·class="p"·data-group-id="6375002045-3">[</span><span·class="p"·data-group-id="6375002045-3">]</span><span·class="p"·data-group-id="6375002045-2">)</[·...·truncated·by·diffoscope;·len:·900,·SHA:·fa9a1bf7d8932185fa368313dbfc8ed15d818bc36858797c658703e4a4a9cc93·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 2355 | </span><span·class="c1">%%·An·expensive·report</span><span·class="gp·unselectable"> | 2355 | </span><span·class="c1">%%·An·expensive·report</span><span·class="gp·unselectable"> |
| 2356 | 2>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">debug</span><span·class="p"·data-group-id=" | 2356 | 2>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">debug</span><span·class="p"·data-group-id="6375002045-8">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="6375002045-9">(</span><span·class="n">What</span><span·class="p"·data-group-id="6375002045-9">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</spa[·...·truncated·by·diffoscope;·len:·727,·SHA:·df89c4327161f92333e7340650a2ed99fd4de4ace50c4f900e6ad5b5111d1365·...·]-8">)</span><span·class="p">.</span><span·class="w"> |
| 2357 | </span><span·class="c1">%%·A·plain·string·with·expensive·metadata·and·normal·metadata</span><span·class="gp·unselectable"> | 2357 | </span><span·class="c1">%%·A·plain·string·with·expensive·metadata·and·normal·metadata</span><span·class="gp·unselectable"> |
| 2358 | 3>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">debug</span><span·class="p"·data-group-id=" | 2358 | 3>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">debug</span><span·class="p"·data-group-id="6375002045-12">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="6375002045-13">(</span><span·class="p"·data-group-id="6375002045-14">[</span><span·class="p"·data-group-id="6375002045-14">]</span><span·class="p"·data-group-id="6375002045-13[·...·truncated·by·diffoscope;·len:·859,·SHA:·7ea52e987a2ae10fae758532a6f33d469a92ffc14b50cdef9876c9bf3f2af6fd·...·]-18">]</span><span·class="p">,</span><span·class="w"> |
| 2359 | ···············</span><span·class="p"·data-group-id=" | 2359 | ···············</span><span·class="p"·data-group-id="6375002045-19">#{</span><span·class="w">·</span><span·class="ss">meta</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">data</span><span·class="w">·</span><span·class="p"·data-group-id="6375002045-19">}</spa[·...·truncated·by·diffoscope;·len:·43,·SHA:·a4032f8ac1763c54893c2cf4563043e99a0641285ed1a7cf03d0bbd1f13e8c57·...·]-12">)</span><span·class="p">.</span></code></pre><p>When·metadata·is·given·both·as·an·argument·and·returned·from·the·fun·they·are |
| 2360 | merged.·If·equal·keys·exists·the·values·are·taken·from·the·metadata·returned·by | 2360 | merged.·If·equal·keys·exists·the·values·are·taken·from·the·metadata·returned·by |
| 2361 | the·fun.</p> | 2361 | the·fun.</p> |
| 2362 | ··</section> | 2362 | ··</section> |
| 2363 | </section> | 2363 | </section> |
| 2364 | <section·class="detail"·id="notice/1"> | 2364 | <section·class="detail"·id="notice/1"> |
| 2365 | ··<div·class="detail-header"> | 2365 | ··<div·class="detail-header"> |
| Offset 2657, 34 lines modified | Offset 2657, 34 lines modified | ||
| 2657 | ······</div> | 2657 | ······</div> |
| 2658 | <p>Reads·the·application·configuration·parameter·<code·class="inline">logger</code>·and·calls | 2658 | <p>Reads·the·application·configuration·parameter·<code·class="inline">logger</code>·and·calls |
| 2659 | <a·href="#add_handlers/1"><code·class="inline">add_handlers/1</code></a>·with·its·contents.</p><p>This·function·should·be·used·by·custom·Logger·handlers·to·make·configuration | 2659 | <a·href="#add_handlers/1"><code·class="inline">add_handlers/1</code></a>·with·its·contents.</p><p>This·function·should·be·used·by·custom·Logger·handlers·to·make·configuration |
| 2660 | consistent·no·matter·which·handler·the·system·uses.·Normal·usage·is·to·add·a | 2660 | consistent·no·matter·which·handler·the·system·uses.·Normal·usage·is·to·add·a |
| 2661 | call·to·<a·href="#add_handlers/1"><code·class="inline">logger:add_handlers/1</code></a>·just·after·the·processes·that·the·handler·needs | 2661 | call·to·<a·href="#add_handlers/1"><code·class="inline">logger:add_handlers/1</code></a>·just·after·the·processes·that·the·handler·needs |
| 2662 | are·started,·and·pass·the·application's·<code·class="inline">logger</code>·configuration·as·the·argument. | 2662 | are·started,·and·pass·the·application's·<code·class="inline">logger</code>·configuration·as·the·argument. |
| 2663 | For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">behaviour</span><span·class="p"·data-group-id=" | 2663 | For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">behaviour</span><span·class="p"·data-group-id="3211766544-1">(</span><span·class="ss">application</span><span·class="p"·data-group-id="3211766544-1">)</span><span·class="p">.</span><span·class="w"> |
| 2664 | </span><span·class="nf">start</span><span·class="p"·data-group-id=" | 2664 | </span><span·class="nf">start</span><span·class="p"·data-group-id="3211766544-2">(</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3211766544-3">[</span><span·class="p"·data-group-id="3211766544-3">]</span><span·class="p"·data-group-id="3211766544-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 2665 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">supervisor</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 2665 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">supervisor</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id="3211766544-4">(</span><span·class="p"·data-group-id="3211766544-5">{</span><span·class="ss">local</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">my_sup</span><span·class="p"·data-group-id="3211766544-5">}</span><span·class="p">,</sp[·...·truncated·by·diffoscope;·len:·251,·SHA:·523c110a6a6b84cc2a239e3da887663e4cc498a2203cb0818774c1ea2fbf9b8c·...·]4-4">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 2666 | ········</span><span·class="p"·data-group-id=" | 2666 | ········</span><span·class="p"·data-group-id="3211766544-7">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pid</span><span·class="p"·data-group-id="3211766544-7">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 2667 | ············</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">add_handlers</span><span·class="p"·data-group-id=" | 2667 | ············</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">add_handlers</span><span·class="p"·data-group-id="3211766544-8">(</span><span·class="ss">my_app</span><span·class="p"·data-group-id="3211766544-8">)</span><span·class="p">,</span><span·class="w"> |
| 2668 | ············</span><span·class="p"·data-group-id=" | 2668 | ············</span><span·class="p"·data-group-id="3211766544-9">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pid</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3211766544-10">[</span><span·class="p"·data-group-id="3[·...·truncated·by·diffoscope;·len:·62,·SHA:·22c29db37a2106a88c2d85f221fa226d2f4d1f4d61f07fb8e6a3c4251c446d34·...·]4-9">}</span><span·class="p">;</span><span·class="w"> |
| 2669 | ········</span><span·class="n">Error</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Error</span><span·class="w"> | 2669 | ········</span><span·class="n">Error</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Error</span><span·class="w"> |
| 2670 | ·····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>This·reads·the·<code·class="inline">logger</code>·configuration·parameter·from·the·<code·class="inline">my_app</code>·application | 2670 | ·····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>This·reads·the·<code·class="inline">logger</code>·configuration·parameter·from·the·<code·class="inline">my_app</code>·application |
| 2671 | and·starts·the·configured·handlers.·The·contents·of·the·configuration·use·the | 2671 | and·starts·the·configured·handlers.·The·contents·of·the·configuration·use·the |
| 2672 | same·rules·as·the | 2672 | same·rules·as·the |
| 2673 | <a·href="logger_chapter.html#handler-configuration">logger·handler·configuration</a>.</p><p>If·the·handler·is·meant·to·replace·the·default·handler,·the·Kernel's·default | 2673 | <a·href="logger_chapter.html#handler-configuration">logger·handler·configuration</a>.</p><p>If·the·handler·is·meant·to·replace·the·default·handler,·the·Kernel's·default |
| 2674 | handler·have·to·be·disabled·before·the·new·handler·is·added.·A·<code·class="inline">sys.config</code>·file | 2674 | handler·have·to·be·disabled·before·the·new·handler·is·added.·A·<code·class="inline">sys.config</code>·file |
| 2675 | that·disables·the·Kernel·handler·and·adds·a·custom·handler·could·look·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8 | 2675 | that·disables·the·Kernel·handler·and·adds·a·custom·handler·could·look·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8229838027-1">[</span><span·class="p"·data-group-id="8229838027-2">{</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="w"> |
| 2676 | ··</span><span·class="p"·data-group-id="8 | 2676 | ··</span><span·class="p"·data-group-id="8229838027-3">[</span><span·class="p"·data-group-id="8229838027-4">{</span><span·class="ss">logger</span><span·class="p">,</span><span·class="w"> |
| 2677 | ····</span><span·class="c1">%%·Disable·the·default·Kernel·handler</span><span·class="w"> | 2677 | ····</span><span·class="c1">%%·Disable·the·default·Kernel·handler</span><span·class="w"> |
| 2678 | ····</span><span·class="p"·data-group-id="8 | 2678 | ····</span><span·class="p"·data-group-id="8229838027-5">[</span><span·class="p"·data-group-id="8229838027-6">{</span><span·class="ss">handler</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">default</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">undefin[·...·truncated·by·diffoscope;·len:·262,·SHA:·baae09562a60ab1f59dfb1c250ecfb4f2a413b9fd1bc91f2c49db1144b591a82·...·]-2">}</span><span·class="p">,</span><span·class="w"> |
| 2679 | ·</span><span·class="p"·data-group-id="8 | 2679 | ·</span><span·class="p"·data-group-id="8229838027-7">{</span><span·class="ss">my_app</span><span·class="p">,</span><span·class="w"> |
| 2680 | ··</span><span·class="p"·data-group-id="8 | 2680 | ··</span><span·class="p"·data-group-id="8229838027-8">[</span><span·class="p"·data-group-id="8229838027-9">{</span><span·class="ss">logger</span><span·class="p">,</span><span·class="w"> |
| 2681 | ····</span><span·class="c1">%%·Enable·this·handler·as·the·default</span><span·class="w"> | 2681 | ····</span><span·class="c1">%%·Enable·this·handler·as·the·default</span><span·class="w"> |
| 2682 | ····</span><span·class="p"·data-group-id="8 | 2682 | ····</span><span·class="p"·data-group-id="8229838027-10">[</span><span·class="p"·data-group-id="8229838027-11">{</span><span·class="ss">handler</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">default</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">my_ha[·...·truncated·by·diffoscope;·len:·477,·SHA:·c18d527444df2dac6538f26f67336b4126b022818cc59c57b56a2d483a9fce75·...·]-1">]</span><span·class="p">.</span></code></pre> |
| 2683 | ··</section> | 2683 | ··</section> |
| 2684 | </section> | 2684 | </section> |
| 2685 | <section·class="detail"·id="add_primary_filter/2"> | 2685 | <section·class="detail"·id="add_primary_filter/2"> |
| 2686 | ··<div·class="detail-header"> | 2686 | ··<div·class="detail-header"> |
| 2687 | ····<a·href="#add_primary_filter/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 2687 | ····<a·href="#add_primary_filter/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 2688 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 2688 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 3575 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·update_formatter_config(HandlerId,·FormatterConfig)·->·ok·|·{error,·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>()} | 3575 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·update_formatter_config(HandlerId,·FormatterConfig)·->·ok·|·{error,·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>()} |
| 3576 | ·································when | 3576 | ·································when |
| 3577 | ·····································HandlerId·::·<a·href="logger_handler.html#t:id/0">logger_handler:id</a>(), | 3577 | ·····································HandlerId·::·<a·href="logger_handler.html#t:id/0">logger_handler:id</a>(), |
| 3578 | ·····································FormatterConfig·::·<a·href="#t:formatter_config/0">formatter_config</a>().</pre> | 3578 | ·····································FormatterConfig·::·<a·href="#t:formatter_config/0">formatter_config</a>().</pre> |
| 3579 | ······</div> | 3579 | ······</div> |
| 3580 | <p>Update·the·formatter·configuration·for·the·specified·handler.</p><p>The·new·configuration·is·merged·with·the·existing·formatter·configuration.</p><p>To·overwrite·the·existing·configuration·without·any·merge,·use</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">set_handler_config</span><span·class="p"·data-group-id=" | 3580 | <p>Update·the·formatter·configuration·for·the·specified·handler.</p><p>The·new·configuration·is·merged·with·the·existing·formatter·configuration.</p><p>To·overwrite·the·existing·configuration·without·any·merge,·use</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">set_handler_config</span><span·class="p"·data-group-id="9823894782-1">(</span><span·class="n">HandlerId</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">formatter</span><span·class="p">,</span><span·class="w"> |
| 3581 | » ······</span><span·class="p"·data-group-id=" | 3581 | » ······</span><span·class="p"·data-group-id="9823894782-2">{</span><span·class="n">FormatterModule</span><span·class="p">,</span><span·class="w">·</span><span·class="n">FormatterConfig</span><span·class="p"·data-group-id="9823894782-2">}</span><span·class="p"·data-group-id="9823894782-1">)</span><span·class="p">.</span></code></pre> |
| 3582 | ··</section> | 3582 | ··</section> |
| 3583 | </section> | 3583 | </section> |
| 3584 | <section·class="detail"·id="update_formatter_config/3"> | 3584 | <section·class="detail"·id="update_formatter_config/3"> |
| 3585 | ··<div·class="detail-header"> | 3585 | ··<div·class="detail-header"> |
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| 186 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 186 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 187 | ··</a> | 187 | ··</a> |
| 188 | ··<span·class="text">Logger·API</span> | 188 | ··<span·class="text">Logger·API</span> |
| 189 | </h2> | 189 | </h2> |
| 190 | <p>The·API·for·logging·consists·of·a·set·of·<a·href="logger.html#module-macros">macros</a>,·and·a·set | 190 | <p>The·API·for·logging·consists·of·a·set·of·<a·href="logger.html#module-macros">macros</a>,·and·a·set |
| 191 | of·functions·on·the·form·<code·class="inline">logger:Level/1,2,3</code>,·which·are·all·shortcuts·for | 191 | of·functions·on·the·form·<code·class="inline">logger:Level/1,2,3</code>,·which·are·all·shortcuts·for |
| 192 | <a·href="logger.html#log/2"><code·class="inline">logger:log(Level,Arg1[,Arg2[,Arg3]])</code></a>.</p><p>The·macros·are·defined·in·<code·class="inline">logger.hrl</code>,·which·is·included·in·a·module·with·the | 192 | <a·href="logger.html#log/2"><code·class="inline">logger:log(Level,Arg1[,Arg2[,Arg3]])</code></a>.</p><p>The·macros·are·defined·in·<code·class="inline">logger.hrl</code>,·which·is·included·in·a·module·with·the |
| 193 | directive</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id=" | 193 | directive</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="8203150452-1">(</span><span·class="s">"kernel/include/logger.hrl"</span><span·class="p"·data-group-id="8203150452-1">)</span><span·class="p">.</span></code></pre><p>The·difference·between·using·the·macros·and·the·exported·functions·is·that |
| 194 | macros·add·location·(originator)·information·to·the·metadata,·and·performs·lazy | 194 | macros·add·location·(originator)·information·to·the·metadata,·and·performs·lazy |
| 195 | evaluation·by·wrapping·the·logger·call·in·a·case·statement,·so·it·is·only | 195 | evaluation·by·wrapping·the·logger·call·in·a·case·statement,·so·it·is·only |
| 196 | evaluated·if·the·log·level·of·the·event·passes·the·primary·log·level·check.</p><h3·id="log-level"·class="section-heading"> | 196 | evaluated·if·the·log·level·of·the·event·passes·the·primary·log·level·check.</p><h3·id="log-level"·class="section-heading"> |
| 197 | ··<a·href="#log-level"·class="hover-link"> | 197 | ··<a·href="#log-level"·class="hover-link"> |
| 198 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 198 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 199 | ··</a> | 199 | ··</a> |
| 200 | ··<span·class="text">Log·Level</span> | 200 | ··<span·class="text">Log·Level</span> |
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| 208 | ··<a·href="#log-message"·class="hover-link"> | 208 | ··<a·href="#log-message"·class="hover-link"> |
| 209 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 209 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 210 | ··</a> | 210 | ··</a> |
| 211 | ··<span·class="text">Log·Message</span> | 211 | ··<span·class="text">Log·Message</span> |
| 212 | </h3> | 212 | </h3> |
| 213 | <p>The·log·message·contains·the·information·to·be·logged.·The·message·can·consist | 213 | <p>The·log·message·contains·the·information·to·be·logged.·The·message·can·consist |
| 214 | of·a·format·string·and·arguments·(given·as·two·separate·parameters·in·the·Logger | 214 | of·a·format·string·and·arguments·(given·as·two·separate·parameters·in·the·Logger |
| 215 | API),·a·string·or·a·report.</p><p>Example,·format·string·and·arguments:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">error</span><span·class="p"·data-group-id=" | 215 | API),·a·string·or·a·report.</p><p>Example,·format·string·and·arguments:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">error</span><span·class="p"·data-group-id="6836323872-1">(</span><span·class="s">"The·file·does·not·exist:·~ts"</span><span·class="p">,</span><span·class="p"·data-group-id="6836323872-2">[</span><span·class="n">Filename</span><span·class="p"·data-group-id="6836323872-2">]</span><span·clas[·...·truncated·by·diffoscope;·len:·367,·SHA:·614a729737922b72c65ea53179004292ac1aa85c6aa8570cb7655200326a8e63·...·]-1">)</span></code></pre><p>A·report,·which·is·either·a·map·or·a·key-value·list,·is·the·preferred·way·to·log |
| 216 | using·Logger·as·it·makes·it·possible·for·different·backends·to·filter·and·format | 216 | using·Logger·as·it·makes·it·possible·for·different·backends·to·filter·and·format |
| 217 | the·log·event·as·it·needs·to.</p><p>Example,·report:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">?</span><span·class="n">LOG_ERROR</span><span·class="p"·data-group-id=" | 217 | the·log·event·as·it·needs·to.</p><p>Example,·report:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">?</span><span·class="n">LOG_ERROR</span><span·class="p"·data-group-id="3514745613-1">(</span><span·class="p"·data-group-id="3514745613-2">#{</span><span·class="w">·</span><span·class="ss">user</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">joe</span><span·class="p">,</span><[·...·truncated·by·diffoscope;·len:·464,·SHA:·1e8a6e12f100bbbc198a0283944f9b3e1bccecaa410cf1620083526a8c933a2e·...·]-1">)</span></code></pre><p>Reports·can·be·accompanied·by·a·<em>report·callback</em>·specified·in·the·log·event's |
| 218 | <a·href="#metadata">metadata</a>.·The·report·callback·is·a·convenience | 218 | <a·href="#metadata">metadata</a>.·The·report·callback·is·a·convenience |
| 219 | function·that·the·<a·href="#formatters">formatter</a>·can·use·to·convert | 219 | function·that·the·<a·href="#formatters">formatter</a>·can·use·to·convert |
| 220 | the·report·to·a·format·string·and·arguments,·or·directly·to·a·string.·The | 220 | the·report·to·a·format·string·and·arguments,·or·directly·to·a·string.·The |
| 221 | formatter·can·also·use·its·own·conversion·function,·if·no·callback·is·provided, | 221 | formatter·can·also·use·its·own·conversion·function,·if·no·callback·is·provided, |
| 222 | or·if·a·customized·formatting·is·desired.</p><p>The·report·callback·must·be·a·fun·with·one·or·two·arguments.·If·it·takes·one | 222 | or·if·a·customized·formatting·is·desired.</p><p>The·report·callback·must·be·a·fun·with·one·or·two·arguments.·If·it·takes·one |
| 223 | argument,·this·is·the·report·itself,·and·the·fun·returns·a·format·string·and | 223 | argument,·this·is·the·report·itself,·and·the·fun·returns·a·format·string·and |
| 224 | arguments:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="p"·data-group-id="6347555545-1">(</span><span·class="p"·data-group-id="6347555545-2">(</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">report</span><span·class="p"·data-group-id="6347555545-3">(</span><span·class="p"·data-group-id="6347555545-3">)</span><span·class="p"·data-group-id="6347555545-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="6347555545-4">{</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="6347555545-5">(</span><span·class="p"·data-group-id="6347555545-5">)</span><span·class="p">,</span><span·class="p"·data-group-id="6347555545-6">[</span><span·class="nf">term</span><span·class="p"·data-group-id="6347555545-7">(</span><span·class="p"·data-group-id="6347555545-7">)</span><span·class="p"·data-group-id="6347555545-6">]</span><span·class="p"·data-group-id="6347555545-4">}</span><span·class="p"·data-group-id="6347555545-1">)</span></code></pre><p>If·it·takes·two·arguments,·the·first·is·the·report,·and·the·second·is·a·map | ||
| 225 | 224 | arguments:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="p"·data-group-id="3191570928-1">(</span><span·class="p"·data-group-id="3191570928-2">(</span><span·class="nc">logger</span><span·class="p">:</span><span·c[·...·truncated·by·diffoscope;·len:·958,·SHA:·7955bd7acd34f231b24dfd941f00fb8b4efcbce89064be7aa61174f8776591d9·...·] | |
| 225 | containing·extra·data·that·allows·direct·conversion·to·a·string:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="p"·data-group-id="7746456781-1">(</span><span·class="p"·data-group-id="7746456781-2">(</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">report</span><span·class="p"·data-group-id="7746456781-3">(</span><span·class="p"·data-group-id="7746456781-3">)</span><span·class="p">,</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">report_cb_config</span><span·class="p"·data-group-id="7746456781-4">(</span><span·class="p"·data-group-id="7746456781-4">)</span><span·class="p"·data-group-id="7746456781-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nc">unicode</span><span·class="p">:</span><span·class="nf">chardata</span><span·class="p"·data-group-id="7746456781-5">(</span><span·class="p"·data-group-id="7746456781-5">)</span><span·class="p"·data-group-id="7746456781-1">)</span></code></pre><p>The·fun·must·obey·the·<code·class="inline">depth</code>·and·<code·class="inline">chars_limit</code>·parameters·provided·in·the | ||
| 226 | second·argument,·as·the·formatter·cannot·do·anything·useful·of·these·parameters | 226 | second·argument,·as·the·formatter·cannot·do·anything·useful·of·these·parameters |
| 227 | with·the·returned·string.·The·extra·data·also·contains·a·field·named | 227 | with·the·returned·string.·The·extra·data·also·contains·a·field·named |
| 228 | <code·class="inline">single_line</code>,·indicating·if·the·printed·log·message·may·contain·line·breaks·or | 228 | <code·class="inline">single_line</code>,·indicating·if·the·printed·log·message·may·contain·line·breaks·or |
| 229 | not.·This·variant·is·used·when·the·formatting·of·the·report·depends·on·the·size | 229 | not.·This·variant·is·used·when·the·formatting·of·the·report·depends·on·the·size |
| 230 | or·single·line·parameters.</p><p>Example,·report,·and·metadata·with·report·callback:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">debug</span><span·class="p"·data-group-id="1 | 230 | or·single·line·parameters.</p><p>Example,·report,·and·metadata·with·report·callback:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">debug</span><span·class="p"·data-group-id="1767783677-1">(</span><span·class="p"·data-group-id="1767783677-2">#{</span><span·class="ss">got</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">connection_request</span><span·class="p">,</span><span·class=[·...·truncated·by·diffoscope;·len:·361,·SHA:·476937b42624f8fbd844a706b523392a24942b86a1e8fa7b7ce859e1627ac90d·...·]-2">}</span><span·class="p">,</span><span·class="w"> |
| 231 | ·············</span><span·class="p"·data-group-id="1 | 231 | ·············</span><span·class="p"·data-group-id="1767783677-3">#{</span><span·class="ss">report_cb</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="1767783677-4">(</span><span·class="n">R</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·596,·SHA:·7ba2f1269c907ace11df12c28b13dd6c941109e4cee5976c1a3954442511068b·...·]-1">)</span></code></pre><p>The·log·message·can·also·be·provided·through·a·fun·for·lazy·evaluation.·The·fun |
| 232 | is·only·evaluated·if·the·primary·log·level·check·passes,·and·is·therefore | 232 | is·only·evaluated·if·the·primary·log·level·check·passes,·and·is·therefore |
| 233 | recommended·if·it·is·expensive·to·generate·the·message.·The·lazy·fun·must·return | 233 | recommended·if·it·is·expensive·to·generate·the·message.·The·lazy·fun·must·return |
| 234 | a·string,·a·report,·or·a·tuple·with·format·string·and·arguments.</p><h3·id="metadata"·class="section-heading"> | 234 | a·string,·a·report,·or·a·tuple·with·format·string·and·arguments.</p><h3·id="metadata"·class="section-heading"> |
| 235 | ··<a·href="#metadata"·class="hover-link"> | 235 | ··<a·href="#metadata"·class="hover-link"> |
| 236 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 236 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 237 | ··</a> | 237 | ··</a> |
| 238 | ··<span·class="text">Metadata</span> | 238 | ··<span·class="text">Metadata</span> |
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| 412 | with·<a·href="../../../../lib/sasl-4.2.2/doc/html/error_logging.html">SASL·Error·Logging</a>,·which·is·specified·with | 412 | with·<a·href="../../../../lib/sasl-4.2.2/doc/html/error_logging.html">SASL·Error·Logging</a>,·which·is·specified·with |
| 413 | <a·href="#logger_sasl_compatible"><code·class="inline">logger_sasl_compatible</code></a>.</p><p>With·this·parameter,·you·can·modify·or·disable·the·default·handler,·add·custom | 413 | <a·href="#logger_sasl_compatible"><code·class="inline">logger_sasl_compatible</code></a>.</p><p>With·this·parameter,·you·can·modify·or·disable·the·default·handler,·add·custom |
| 414 | handlers·and·primary·logger·filters,·set·log·levels·per·module,·and·modify·the | 414 | handlers·and·primary·logger·filters,·set·log·levels·per·module,·and·modify·the |
| 415 | <a·href="#logger-proxy">proxy</a>·configuration.</p><p><code·class="inline">Config</code>·is·any·(zero·or·more)·of·the·following:</p><ul><li><p><strong><code·class="inline">{handler,·default,·undefined}</code></strong>·-·Disables·the·default·handler.·This | 415 | <a·href="#logger-proxy">proxy</a>·configuration.</p><p><code·class="inline">Config</code>·is·any·(zero·or·more)·of·the·following:</p><ul><li><p><strong><code·class="inline">{handler,·default,·undefined}</code></strong>·-·Disables·the·default·handler.·This |
| 416 | allows·another·application·to·add·its·own·default·handler.</p><p>Only·one·entry·of·this·type·is·allowed.</p></li><li><p><strong><code·class="inline">{handler,·HandlerId,·Module,·HandlerConfig}</code></strong>·-·If·<code·class="inline">HandlerId</code>·is | 416 | allows·another·application·to·add·its·own·default·handler.</p><p>Only·one·entry·of·this·type·is·allowed.</p></li><li><p><strong><code·class="inline">{handler,·HandlerId,·Module,·HandlerConfig}</code></strong>·-·If·<code·class="inline">HandlerId</code>·is |
| 417 | <code·class="inline">default</code>,·then·this·entry·modifies·the·default·handler,·equivalent·to | 417 | <code·class="inline">default</code>,·then·this·entry·modifies·the·default·handler,·equivalent·to |
| 418 | calling</p><pre><code·class="text">········logger:remove_handler(default) | 418 | calling</p><pre><code·class="text">········logger:remove_handler(default) |
| 419 | </code></pre><p>followed·by</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">········</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">add_handler</span><span·class="p"·data-group-id=" | 419 | </code></pre><p>followed·by</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">········</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">add_handler</span><span·class="p"·data-group-id="9598831658-1">(</span><span·class="ss">default</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">HandlerConfig</span><span·class="p"·data-group-id="9598831658-1">)</span><span·class="w"> |
| 420 | </span></code></pre><p>For·all·other·values·of·<code·class="inline">HandlerId</code>,·this·entry·adds·a·new·handler, | 420 | </span></code></pre><p>For·all·other·values·of·<code·class="inline">HandlerId</code>,·this·entry·adds·a·new·handler, |
| 421 | equivalent·to·calling</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">········</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">add_handler</span><span·class="p"·data-group-id=" | 421 | equivalent·to·calling</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">········</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">add_handler</span><span·class="p"·data-group-id="1689366029-1">(</span><span·class="n">HandlerId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">HandlerConfig</span><span·class="p"·data-group-id="1689366029-1">)</span><span·class="w"> |
| 422 | </span></code></pre><p>Multiple·entries·of·this·type·are·allowed.</p></li><li><p><strong><code·class="inline">{filters,·FilterDefault,·[Filter]}</code></strong>·-·Adds·the·specified·primary | 422 | </span></code></pre><p>Multiple·entries·of·this·type·are·allowed.</p></li><li><p><strong><code·class="inline">{filters,·FilterDefault,·[Filter]}</code></strong>·-·Adds·the·specified·primary |
| 423 | filters.</p><ul><li><p><code·class="inline">FilterDefault·=·log·|·stop</code></p></li><li><code·class="inline">Filter·=·{FilterId,·{FilterFun,·FilterConfig}}</code></li></ul><p>Equivalent·to·calling</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">········</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">add_primary_filter</span><span·class="p"·data-group-id=" | 423 | filters.</p><ul><li><p><code·class="inline">FilterDefault·=·log·|·stop</code></p></li><li><code·class="inline">Filter·=·{FilterId,·{FilterFun,·FilterConfig}}</code></li></ul><p>Equivalent·to·calling</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">········</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">add_primary_filter</span><span·class="p"·data-group-id="7515932860-1">(</span><span·class="n">FilterId</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7515932860-2">{</span><span·class="n">FilterFun</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Filter[·...·truncated·by·diffoscope;·len:·107,·SHA:·6ea6f0de214352e9740217b2bddeca171c7de306e4c7b2b615c40f4c3490332c·...·]-1">)</span><span·class="w"> |
| 424 | </span></code></pre><p>for·each·<code·class="inline">Filter</code>.</p><p><code·class="inline">FilterDefault</code>·specifies·the·behaviour·if·all·primary·filters·return | 424 | </span></code></pre><p>for·each·<code·class="inline">Filter</code>.</p><p><code·class="inline">FilterDefault</code>·specifies·the·behaviour·if·all·primary·filters·return |
| 425 | <code·class="inline">ignore</code>,·see·section·<a·href="#filters">Filters</a>.</p><p>Only·one·entry·of·this·type·is·allowed.</p></li><li><p><strong><code·class="inline">{module_level,·Level,·[Module]}</code></strong>·-·Sets·module·log·level·for·the·given | 425 | <code·class="inline">ignore</code>,·see·section·<a·href="#filters">Filters</a>.</p><p>Only·one·entry·of·this·type·is·allowed.</p></li><li><p><strong><code·class="inline">{module_level,·Level,·[Module]}</code></strong>·-·Sets·module·log·level·for·the·given |
| 426 | modules.·Equivalent·to·calling</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">········</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">set_module_level</span><span·class="p"·data-group-id=" | 426 | modules.·Equivalent·to·calling</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">········</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">set_module_level</span><span·class="p"·data-group-id="7669040562-1">(</span><span·class="n">Module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Level</span><span·class="p"·data-group-id="7669040562-1">)</span></code></pre><p>for·each·<code·class="inline">Module</code>.</p><p>Multiple·entries·of·this·type·are·allowed.</p></li><li><p><strong><code·class="inline">{proxy,·ProxyConfig}</code></strong>·-·Sets·the·proxy·configuration,·equivalent·to |
| 427 | calling</p><pre><code·class="text">········logger:set_proxy_config(ProxyConfig) | 427 | calling</p><pre><code·class="text">········logger:set_proxy_config(ProxyConfig) |
| 428 | </code></pre><p>Only·one·entry·of·this·type·is·allowed.</p></li></ul><p>See·section·<a·href="#configuration-examples">Configuration·Examples</a>·for | 428 | </code></pre><p>Only·one·entry·of·this·type·is·allowed.</p></li></ul><p>See·section·<a·href="#configuration-examples">Configuration·Examples</a>·for |
| 429 | examples·using·the·<code·class="inline">logger</code>·parameter·for·system·configuration.</p></li><li><p><strong><code·class="inline"·id="logger_metadata">logger_metadata·=·map()</code></strong>·-·Specifies·the·primary | 429 | examples·using·the·<code·class="inline">logger</code>·parameter·for·system·configuration.</p></li><li><p><strong><code·class="inline"·id="logger_metadata">logger_metadata·=·map()</code></strong>·-·Specifies·the·primary |
| 430 | metadata.·See·the·<a·href="kernel_app.html#logger_metadata"><code·class="inline">kernel(6)</code></a>·manual·page·for | 430 | metadata.·See·the·<a·href="kernel_app.html#logger_metadata"><code·class="inline">kernel(6)</code></a>·manual·page·for |
| 431 | more·information·about·this·parameter.</p></li><li><p><strong><code·class="inline"·id="logger_level">logger_level·=·Level</code></strong>·-·Specifies·the·primary·log | 431 | more·information·about·this·parameter.</p></li><li><p><strong><code·class="inline"·id="logger_level">logger_level·=·Level</code></strong>·-·Specifies·the·primary·log |
| 432 | level.·See·the·<a·href="kernel_app.html#logger_level"><code·class="inline">kernel(6)</code></a>·manual·page·for·more | 432 | level.·See·the·<a·href="kernel_app.html#logger_level"><code·class="inline">kernel(6)</code></a>·manual·page·for·more |
| 433 | information·about·this·parameter.</p></li><li><p><strong><code·class="inline"·id="logger_sasl_compatible">logger_sasl_compatible·=·true·|·false</code></strong>·- | 433 | information·about·this·parameter.</p></li><li><p><strong><code·class="inline"·id="logger_sasl_compatible">logger_sasl_compatible·=·true·|·false</code></strong>·- |
| Offset 442, 39 lines modified | Offset 442, 39 lines modified | ||
| 442 | </h3> | 442 | </h3> |
| 443 | <p>The·value·of·the·Kernel·configuration·parameter·<code·class="inline">logger</code>·is·a·list·of·tuples.·It | 443 | <p>The·value·of·the·Kernel·configuration·parameter·<code·class="inline">logger</code>·is·a·list·of·tuples.·It |
| 444 | is·possible·to·write·the·term·on·the·command·line·when·starting·an·erlang·node, | 444 | is·possible·to·write·the·term·on·the·command·line·when·starting·an·erlang·node, |
| 445 | but·as·the·term·grows,·a·better·approach·is·to·use·the·system·configuration | 445 | but·as·the·term·grows,·a·better·approach·is·to·use·the·system·configuration |
| 446 | file.·See·the·<a·href="config.html"><code·class="inline">config(4)</code></a>·manual·page·for·more·information·about | 446 | file.·See·the·<a·href="config.html"><code·class="inline">config(4)</code></a>·manual·page·for·more·information·about |
| 447 | this·file.</p><p>Each·of·the·following·examples·shows·a·simple·system·configuration·file·that | 447 | this·file.</p><p>Each·of·the·following·examples·shows·a·simple·system·configuration·file·that |
| 448 | configures·Logger·according·to·the·description.</p><p>Modify·the·default·handler·to·print·to·a·file·instead·of | 448 | configures·Logger·according·to·the·description.</p><p>Modify·the·default·handler·to·print·to·a·file·instead·of |
| 449 | <a·href="../../../../lib/stdlib-6.2.1/doc/html/io.html#t:standard_io/0"><code·class="inline">standard_io</code></a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 449 | <a·href="../../../../lib/stdlib-6.2.1/doc/html/io.html#t:standard_io/0"><code·class="inline">standard_io</code></a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="1615917837-1">[</span><span·class="p"·data-group-id="1615917837-2">{</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="w"> |
| 450 | ··</span><span·class="p"·data-group-id=" | 450 | ··</span><span·class="p"·data-group-id="1615917837-3">[</span><span·class="p"·data-group-id="1615917837-4">{</span><span·class="ss">logger</span><span·class="p">,</span><span·class="w"> |
| 451 | ····</span><span·class="p"·data-group-id=" | 451 | ····</span><span·class="p"·data-group-id="1615917837-5">[</span><span·class="p"·data-group-id="1615917837-6">{</span><span·class="ss">handler</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">default</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">logger_std_h</span><span·class="p">,</span><span·class="w">··</span><span·class="c1">%·{handler,·HandlerId,·Module,</span><span·class="w"> |
| 452 | ······</span><span·class="p"·data-group-id="1615917837-7">#{</span><span·class="ss">config</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="1615917837-8">#{</span><span·class="ss">file</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"log/erlang.log"</span><span·class="p"·data-group-id="1615917837-8">}</span><span·class="p"·data-group-id="1615917837-7">}</span><span·class="p"·data-group-id="1615917837-6">}</span><span·class="w">··</span><span·class="c1">%·Config}</span><span·class="w"> | ||
| 453 | ····</span><span·class="p"·data-group-id="1615917837-5">]</span><span·class="p"·data-group-id="1615917837-4">}</span><span·class="p"·data-group-id="1615917837-3">]</span><span·class="p"·data-group-id="1615917837-2">}</span><span·class="p"·data-group-id="1615917837-1">]</span><span·class="p">.</span></code></pre><p>Modify·the·default·handler·to·print·each·log·event·as·a·single·line:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="7683353082-1">[</span><span·class="p"·data-group-id="7683353082-2">{</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="w"> | ||
| 452 | ······</span><span·class="p"·data-group-id="5579456628-7">#{</span><span·class="ss">config</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="5579456628-8">#{</span><span·class="ss">file</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"log/erlang.log"</span><span·class="p"·data-group-id="5579456628-8">}</span><span·class="p"·data-group-id="5579456628-7">}</span><span·class="p"·data-group-id="5579456628-6">}</span><span·class="w">··</span><span·class="c1">%·Config}</span><span·class="w"> | ||
| 453 | ····</span><span·class="p"·data-group-id="5579456628-5">]</span><span·class="p"·data-group-id="5579456628-4">}</span><span·class="p"·data-group-id="5579456628-3">]</span><span·class="p"·data-group-id="5579456628-2">}</span><span·class="p"·data-group-id="5579456628-1">]</span><span·class="p">.</span></code></pre><p>Modify·the·default·handler·to·print·each·log·event·as·a·single·line:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="2288724952-1">[</span><span·class="p"·data-group-id="2288724952-2">{</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="w"> | ||
| 454 | ··</span><span·class="p"·data-group-id="2288724952-3">[</span><span·class="p"·data-group-id="2288724952-4">{</span><span·class="ss">logger</span><span·class="p">,</span><span·class="w"> | ||
| 455 | ····</span><span·class="p"·data-group-id="2288724952-5">[</span><span·class="p"·data-group-id="2288724952-6">{</span><span·class="ss">handler</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">default</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">logger_std_h</span><span·class="p">,</span><span·class="w"> | ||
| 456 | ······</span><span·class="p"·data-group-id="2288724952-7">#{</span><span·class="ss">formatter</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="2288724952-8">{</span><span·class="ss">logger_formatter</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2288724952-9">#{</span><span·class="ss">single_line</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">true</span><span·class="p"·data-group-id="2288724952-9">}</span><span·class="p"·data-group-id="2288724952-8">}</span><span·class="p"·data-group-id="2288724952-7">}</span><span·class="p"·data-group-id="2288724952-6">}</span><span·class="w"> | ||
| 457 | ····</span><span·class="p"·data-group-id="2288724952-5">]</span><span·class="p"·data-group-id="2288724952-4">}</span><span·class="p"·data-group-id="2288724952-3">]</span><span·class="p"·data-group-id="2288724952-2">}</span><span·class="p"·data-group-id="2288724952-1">]</span><span·class="p">.</span></code></pre><p>Modify·the·default·handler·to·print·the·pid·of·the·logging·process·for·each·log | ||
| 458 | event:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="5376068206-1">[</span><span·class="p"·data-group-id="5376068206-2">{</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="w"> | ||
| 459 | ··</span><span·class="p"·data-group-id=" | 454 | ··</span><span·class="p"·data-group-id="7683353082-3">[</span><span·class="p"·data-group-id="7683353082-4">{</span><span·class="ss">logger</span><span·class="p">,</span><span·class="w"> |
| 460 | ····</span><span·class="p"·data-group-id=" | 455 | ····</span><span·class="p"·data-group-id="7683353082-5">[</span><span·class="p"·data-group-id="7683353082-6">{</span><span·class="ss">handler</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">default</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">logger_std_h</span><span·class="p">,</span><span·class="w"> |
| 456 | ······</span><span·class="p"·data-group-id="7683353082-7">#{</span><span·class="ss">formatter</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="7683353082-8">{</span><span·class="ss">logger_formatter</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7683353082-9">#{</span><span·class="ss">single_line</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">true</span><span·class="p"·data-group-id="7683353082-9">}</span><span·class="p"·data-group-id="7683353082-8">}</span><span·class="p"·data-group-id="7683353082-7">}</span><span·class="p"·data-group-id="7683353082-6">}</span><span·class="w"> | ||
| 457 | ····</span><span·class="p"·data-group-id="7683353082-5">]</span><span·class="p"·data-group-id="7683353082-4">}</span><span·class="p"·data-group-id="7683353082-3">]</span><span·class="p"·data-group-id="7683353082-2">}</span><span·class="p"·data-group-id="7683353082-1">]</span><span·class="p">.</span></code></pre><p>Modify·the·default·handler·to·print·the·pid·of·the·logging·process·for·each·log | ||
| 458 | event:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="6132847832-1">[</span><span·class="p"·data-group-id="6132847832-2">{</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="w"> | ||
| 459 | ··</span><span·class="p"·data-group-id="6132847832-3">[</span><span·class="p"·data-group-id="6132847832-4">{</span><span·class="ss">logger</span><span·class="p">,</span><span·class="w"> | ||
| 460 | ····</span><span·class="p"·data-group-id="6132847832-5">[</span><span·class="p"·data-group-id="6132847832-6">{</span><span·class="ss">handler</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">default</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">logger_std_h</span><span·class="p">,</span><span·class="w"> | ||
| 461 | ······</span><span·class="p"·data-group-id=" | 461 | ······</span><span·class="p"·data-group-id="6132847832-7">#{</span><span·class="ss">formatter</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="6132847832-8">{</span><span·class="ss">logger_formatter</span><span·class="p">,</span><span·class="w"> |
| 462 | ························</span><span·class="p"·data-group-id=" | 462 | ························</span><span·class="p"·data-group-id="6132847832-9">#{</span><span·class="ss">template</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="6132847832-10">[</span><span·class="ss">time</span><span·class="p">,</span><span·class="s">&qu[·...·truncated·by·diffoscope;·len:·494,·SHA:·c803530d2ba93b39a2fe4e20c76e020fb7147310984486701d9b2f0cad303c64·...·]-6">}</span><span·class="w"> |
| 463 | ····</span><span·class="p"·data-group-id=" | 463 | ····</span><span·class="p"·data-group-id="6132847832-5">]</span><span·class="p"·data-group-id="6132847832-4">}</span><span·class="p"·data-group-id="6132847832-3">]</span><span·class="p"·data-group-id="6132847832-2">}</span><span·class="p"·data-group-id="6132847832-1">]</span><span·class="p">.</span></code></pre><p>Modify·the·default·handler·to·only·print·errors·and·more·severe·log·events·to |
| 464 | "log/erlang.log",·and·add·another·handler·to·print·all·log·events·to | 464 | "log/erlang.log",·and·add·another·handler·to·print·all·log·events·to |
| 465 | "log/debug.log".</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 465 | "log/debug.log".</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="9470010231-1">[</span><span·class="p"·data-group-id="9470010231-2">{</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="w"> |
| 466 | ··</span><span·class="p"·data-group-id=" | 466 | ··</span><span·class="p"·data-group-id="9470010231-3">[</span><span·class="p"·data-group-id="9470010231-4">{</span><span·class="ss">logger</span><span·class="p">,</span><span·class="w"> |
| 467 | ····</span><span·class="p"·data-group-id=" | 467 | ····</span><span·class="p"·data-group-id="9470010231-5">[</span><span·class="p"·data-group-id="9470010231-6">{</span><span·class="ss">handler</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">default</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">logger_std_h</span><span·class="p">,</span><span·class="w"> |
| 468 | ······</span><span·class="p"·data-group-id=" | 468 | ······</span><span·class="p"·data-group-id="9470010231-7">#{</span><span·class="ss">level</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">error</span><span·class="p">,</span><span·class="w"> |
| 469 | ········</span><span·class="ss">config</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 469 | ········</span><span·class="ss">config</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="9470010231-8">#{</span><span·class="ss">file</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"log/erlang.log"</span><span·class="p"·data-group-id="9470010231-8">}</span><span·class="p"·data-group-[·...·truncated·by·diffoscope;·len:·67,·SHA:·aecc95551afbc1c32de91c0d7b6267aa5c8ba4df182f4e0730c51454db1cc3dd·...·]-6">}</span><span·class="p">,</span><span·class="w"> |
| 470 | ·····</span><span·class="p"·data-group-id=" | 470 | ·····</span><span·class="p"·data-group-id="9470010231-9">{</span><span·class="ss">handler</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">info</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">logger_std_h</span><span·class="p">,</span><span·class="w"> |
| 471 | ······</span><span·class="p"·data-group-id=" | 471 | ······</span><span·class="p"·data-group-id="9470010231-10">#{</span><span·class="ss">level</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">debug</span><span·class="p">,</span><span·class="w"> |
| 472 | ········</span><span·class="ss">config</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 472 | ········</span><span·class="ss">config</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="9470010231-11">#{</span><span·class="ss">file</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"log/debug.log"</span><span·class="p"·data-group-id="9470010231-11">}</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·69,·SHA:·4ed8b99c49583330bc028290d39985ee4aedc92526ceaebe248572fd92fc933c·...·]-9">}</span><span·class="w"> |
| 473 | ····</span><span·class="p"·data-group-id=" | 473 | ····</span><span·class="p"·data-group-id="9470010231-5">]</span><span·class="p"·data-group-id="9470010231-4">}</span><span·class="p"·data-group-id="9470010231-3">]</span><span·class="p"·data-group-id="9470010231-2">}</span><span·class="p"·data-group-id="9470010231-1">]</span><span·class="p">.</span></code></pre><h2·id="backwards-compatibility-with-error_logger"·class="section-heading"> |
| 474 | ··<a·href="#backwards-compatibility-with-error_logger"·class="hover-link"> | 474 | ··<a·href="#backwards-compatibility-with-error_logger"·class="hover-link"> |
| 475 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 475 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 476 | ··</a> | 476 | ··</a> |
| 477 | ··<span·class="text">Backwards·Compatibility·with·error_logger</span> | 477 | ··<span·class="text">Backwards·Compatibility·with·error_logger</span> |
| 478 | </h2> | 478 | </h2> |
| 479 | <p>Logger·provides·backwards·compatibility·with·<code·class="inline">error_logger</code>·in·the·following | 479 | <p>Logger·provides·backwards·compatibility·with·<code·class="inline">error_logger</code>·in·the·following |
| 480 | ways:</p><ul><li><p><strong>API·for·Logging</strong>·-·The·<code·class="inline">error_logger</code>·API·still·exists,·but·should·only·be | 480 | ways:</p><ul><li><p><strong>API·for·Logging</strong>·-·The·<code·class="inline">error_logger</code>·API·still·exists,·but·should·only·be |
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| 507 | <code·class="inline">true</code>.·The | 507 | <code·class="inline">true</code>.·The |
| 508 | <a·href="../../../../lib/sasl-4.2.2/doc/html/sasl_app.html#deprecated_error_logger_config">SASL·configuration·parameters</a> | 508 | <a·href="../../../../lib/sasl-4.2.2/doc/html/sasl_app.html#deprecated_error_logger_config">SASL·configuration·parameters</a> |
| 509 | can·then·be·used·as·before,·and·the·SASL·reports·will·only·be·printed·if·the | 509 | can·then·be·used·as·before,·and·the·SASL·reports·will·only·be·printed·if·the |
| 510 | SASL·application·is·running,·through·a·second·log·handler·named·<code·class="inline">sasl</code>.</p><p>All·SASL·reports·have·a·metadata·field·<code·class="inline">domain</code>·which·is·set·to·<code·class="inline">[otp,sasl]</code>. | 510 | SASL·application·is·running,·through·a·second·log·handler·named·<code·class="inline">sasl</code>.</p><p>All·SASL·reports·have·a·metadata·field·<code·class="inline">domain</code>·which·is·set·to·<code·class="inline">[otp,sasl]</code>. |
| 511 | This·field·can·be·used·by·filters·to·stop·or·allow·the·log·events.</p><p>See·section·<a·href="../../../../lib/sasl-4.2.2/doc/html/error_logging.html">SASL·User's·Guide</a>·for·more | 511 | This·field·can·be·used·by·filters·to·stop·or·allow·the·log·events.</p><p>See·section·<a·href="../../../../lib/sasl-4.2.2/doc/html/error_logging.html">SASL·User's·Guide</a>·for·more |
| 512 | information·about·the·old·SASL·error·logging·functionality.</p></li><li><p><strong><a·href=""·id="legacy_event_handlers"></a>·Legacy·Event·Handlers</strong><br/>To·use·event·handlers·written·for·<code·class="inline">error_logger</code>,·just·add·your·event·handler | 512 | information·about·the·old·SASL·error·logging·functionality.</p></li><li><p><strong><a·href=""·id="legacy_event_handlers"></a>·Legacy·Event·Handlers</strong><br/>To·use·event·handlers·written·for·<code·class="inline">error_logger</code>,·just·add·your·event·handler |
| 513 | with</p><pre><code·class="text">error_logger:add_report_handler/1,2.</code></pre><p>This·automatically·starts·the·error·logger·event·manager,·and·adds | 513 | with</p><pre><code·class="text">error_logger:add_report_handler/1,2.</code></pre><p>This·automatically·starts·the·error·logger·event·manager,·and·adds |
| 514 | <code·class="inline">error_logger</code>·as·a·handler·to·Logger,·with·the·following·configuration:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="41 | 514 | <code·class="inline">error_logger</code>·as·a·handler·to·Logger,·with·the·following·configuration:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="9410323276-1">#{</span><span·class="ss">level</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">info</span><span·class="p">,</span><span·class="w"> |
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| 140 | </h2> | 140 | </h2> |
| 141 | <h3·id="print-the-primary-logger-configurations"·class="section-heading"> | 141 | <h3·id="print-the-primary-logger-configurations"·class="section-heading"> |
| 142 | ··<a·href="#print-the-primary-logger-configurations"·class="hover-link"> | 142 | ··<a·href="#print-the-primary-logger-configurations"·class="hover-link"> |
| 143 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 143 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 144 | ··</a> | 144 | ··</a> |
| 145 | ··<span·class="text">Print·the·primary·Logger·configurations.</span> | 145 | ··<span·class="text">Print·the·primary·Logger·configurations.</span> |
| 146 | </h3> | 146 | </h3> |
| 147 | <pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">i</span><span·class="p"·data-group-id="0 | 147 | <pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">i</span><span·class="p"·data-group-id="0185252775-1">(</span><span·class="ss">primary</span><span·class="p"·data-group-id="0185252775-1">)</span><span·class="p">.</span><span·class="w"> |
| 148 | </span><span·class="n">Primary</span><span·class="w">·</span><span·class="nc">configuration</span><span·class="p">:</span><span·class="w"> | 148 | </span><span·class="n">Primary</span><span·class="w">·</span><span·class="nc">configuration</span><span·class="p">:</span><span·class="w"> |
| 149 | ····</span><span·class="n">Level</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">notice</span><span·class="w"> | 149 | ····</span><span·class="n">Level</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">notice</span><span·class="w"> |
| 150 | ····</span><span·class="n">Filter</span><span·class="w">·</span><span·class="n">Default</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">log</span><span·class="w"> | 150 | ····</span><span·class="n">Filter</span><span·class="w">·</span><span·class="n">Default</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">log</span><span·class="w"> |
| 151 | ····</span><span·class="n">Filters</span><span·class="p">:</span><span·class="w"> | 151 | ····</span><span·class="n">Filters</span><span·class="p">:</span><span·class="w"> |
| 152 | ········</span><span·class="p"·data-group-id="0 | 152 | ········</span><span·class="p"·data-group-id="0185252775-2">(</span><span·class="ss">none</span><span·class="p"·data-group-id="0185252775-2">)</span></code></pre><p>It·is·also·possible·to·fetch·the·configuration·using |
| 153 | <a·href="logger.html#get_primary_config/0"><code·class="inline">logger:get_primary_config()</code></a>.</p><h4>See·also</h4><ul><li><a·href="logger.html#i/0">logger:i()</a></li><li><a·href="logger_chapter.html#configuration">Configuration</a>·in·the·Logging·User's·Guide</li></ul><h3·id="print-the-configuration-of-all-handlers"·class="section-heading"> | 153 | <a·href="logger.html#get_primary_config/0"><code·class="inline">logger:get_primary_config()</code></a>.</p><h4>See·also</h4><ul><li><a·href="logger.html#i/0">logger:i()</a></li><li><a·href="logger_chapter.html#configuration">Configuration</a>·in·the·Logging·User's·Guide</li></ul><h3·id="print-the-configuration-of-all-handlers"·class="section-heading"> |
| 154 | ··<a·href="#print-the-configuration-of-all-handlers"·class="hover-link"> | 154 | ··<a·href="#print-the-configuration-of-all-handlers"·class="hover-link"> |
| 155 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 155 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 156 | ··</a> | 156 | ··</a> |
| 157 | ··<span·class="text">Print·the·configuration·of·all·handlers.</span> | 157 | ··<span·class="text">Print·the·configuration·of·all·handlers.</span> |
| 158 | </h3> | 158 | </h3> |
| 159 | <pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">i</span><span·class="p"·data-group-id=" | 159 | <pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">i</span><span·class="p"·data-group-id="1558654858-1">(</span><span·class="ss">handlers</span><span·class="p"·data-group-id="1558654858-1">)</span><span·class="p">.</span><span·class="w"> |
| 160 | </span><span·class="n">Handler</span><span·class="w">·</span><span·class="nc">configuration</span><span·class="p">:</span><span·class="w"> | 160 | </span><span·class="n">Handler</span><span·class="w">·</span><span·class="nc">configuration</span><span·class="p">:</span><span·class="w"> |
| 161 | ····</span><span·class="n">Id</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">default</span><span·class="w"> | 161 | ····</span><span·class="n">Id</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">default</span><span·class="w"> |
| 162 | ········</span><span·class="n">Module</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">logger_std_h</span><span·class="w"> | 162 | ········</span><span·class="n">Module</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">logger_std_h</span><span·class="w"> |
| 163 | ········</span><span·class="n">Level</span><span·class="p">:</span><span·class="w">··</span><span·class="ss">all</span><span·class="w"> | 163 | ········</span><span·class="n">Level</span><span·class="p">:</span><span·class="w">··</span><span·class="ss">all</span><span·class="w"> |
| 164 | ········</span><span·class="n">Formatter</span><span·class="p">:</span><span·class="w"> | 164 | ········</span><span·class="n">Formatter</span><span·class="p">:</span><span·class="w"> |
| 165 | ············</span><span·class="n">Module</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">logger_formatter</span><span·class="w"> | 165 | ············</span><span·class="n">Module</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">logger_formatter</span><span·class="w"> |
| 166 | ············</span><span·class="n">Config</span><span·class="p">:</span><span·class="w"> | 166 | ············</span><span·class="n">Config</span><span·class="p">:</span><span·class="w"> |
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| 169 | ········</span><span·class="n">Filter</span><span·class="w">·</span><span·class="n">Default</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">stop</span><span·class="w"> | 169 | ········</span><span·class="n">Filter</span><span·class="w">·</span><span·class="n">Default</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">stop</span><span·class="w"> |
| 170 | ········</span><span·class="n">Filters</span><span·class="p">:</span><span·class="w"> | 170 | ········</span><span·class="n">Filters</span><span·class="p">:</span><span·class="w"> |
| 171 | ············</span><span·class="n">Id</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">remote_gl</span><span·class="w"> | 171 | ············</span><span·class="n">Id</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">remote_gl</span><span·class="w"> |
| 172 | ················</span><span·class="n">Fun</span><span·class="p">:</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="nc">logger_filters</span><span·class="p">:</span><span·class="ss">remote_gl</span><span·class="p">/</span><span·class="mi">2</span><span·class="w"> | 172 | ················</span><span·class="n">Fun</span><span·class="p">:</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="nc">logger_filters</span><span·class="p">:</span><span·class="ss">remote_gl</span><span·class="p">/</span><span·class="mi">2</span><span·class="w"> |
| 173 | ················</span><span·class="n">Arg</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">stop</span><span·class="w"> | 173 | ················</span><span·class="n">Arg</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">stop</span><span·class="w"> |
| 174 | ············</span><span·class="n">Id</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">domain</span><span·class="w"> | 174 | ············</span><span·class="n">Id</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">domain</span><span·class="w"> |
| 175 | ················</span><span·class="n">Fun</span><span·class="p">:</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="nc">logger_filters</span><span·class="p">:</span><span·class="ss">domain</span><span·class="p">/</span><span·class="mi">2</span><span·class="w"> | 175 | ················</span><span·class="n">Fun</span><span·class="p">:</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="nc">logger_filters</span><span·class="p">:</span><span·class="ss">domain</span><span·class="p">/</span><span·class="mi">2</span><span·class="w"> |
| 176 | ················</span><span·class="n">Arg</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 176 | ················</span><span·class="n">Arg</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="1558654858-2">{</span><span·class="ss">log</span><span·class="p">,</span><span·class="ss">super</span><span·class="p">,</span><span·class="p"·data-group-id="1558654858-3">[</span><span·class="ss">otp</span><span·class="p">,</span><span·class="ss">sasl</spa[·...·truncated·by·diffoscope;·len:·96,·SHA:·be270634dc80e83b6f4122af664685ec04f1a3202cdbed5ba59f7000e31a7ab3·...·]-2">}</span><span·class="w"> |
| 177 | ············</span><span·class="n">Id</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">no_domain</span><span·class="w"> | 177 | ············</span><span·class="n">Id</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">no_domain</span><span·class="w"> |
| 178 | ················</span><span·class="n">Fun</span><span·class="p">:</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="nc">logger_filters</span><span·class="p">:</span><span·class="ss">domain</span><span·class="p">/</span><span·class="mi">2</span><span·class="w"> | 178 | ················</span><span·class="n">Fun</span><span·class="p">:</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="nc">logger_filters</span><span·class="p">:</span><span·class="ss">domain</span><span·class="p">/</span><span·class="mi">2</span><span·class="w"> |
| 179 | ················</span><span·class="n">Arg</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 179 | ················</span><span·class="n">Arg</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="1558654858-4">{</span><span·class="ss">log</span><span·class="p">,</span><span·class="ss">undefined</span><span·class="p">,</span><span·class="p"·data-group-id="1558654858-5">[</span><span·class="p"·data-group-id="1558654858-5">]</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·21,·SHA:·3d2a666020838c70c145239936fe463a805cad0fcd05ad367c8f9f1743aeafa9·...·]-4">}</span><span·class="w"> |
| 180 | ········</span><span·class="n">Handler</span><span·class="w">·</span><span·class="n">Config</span><span·class="p">:</span><span·class="w"> | 180 | ········</span><span·class="n">Handler</span><span·class="w">·</span><span·class="n">Config</span><span·class="p">:</span><span·class="w"> |
| 181 | ············</span><span·class="nc">burst_limit_enable</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">true</span><span·class="w"> | 181 | ············</span><span·class="nc">burst_limit_enable</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">true</span><span·class="w"> |
| 182 | ············</span><span·class="nc">burst_limit_max_count</span><span·class="p">:</span><span·class="w">·</span><span·class="mi">500</span><span·class="w"> | 182 | ············</span><span·class="nc">burst_limit_max_count</span><span·class="p">:</span><span·class="w">·</span><span·class="mi">500</span><span·class="w"> |
| 183 | ············</span><span·class="nc">burst_limit_window_time</span><span·class="p">:</span><span·class="w">·</span><span·class="mi">1000</span><span·class="w"> | 183 | ············</span><span·class="nc">burst_limit_window_time</span><span·class="p">:</span><span·class="w">·</span><span·class="mi">1000</span><span·class="w"> |
| 184 | ············</span><span·class="nc">drop_mode_qlen</span><span·class="p">:</span><span·class="w">·</span><span·class="mi">200</span><span·class="w"> | 184 | ············</span><span·class="nc">drop_mode_qlen</span><span·class="p">:</span><span·class="w">·</span><span·class="mi">200</span><span·class="w"> |
| 185 | ············</span><span·class="nc">filesync_repeat_interval</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">no_repeat</span><span·class="w"> | 185 | ············</span><span·class="nc">filesync_repeat_interval</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">no_repeat</span><span·class="w"> |
| 186 | ············</span><span·class="nc">flush_qlen</span><span·class="p">:</span><span·class="w">·</span><span·class="mi">1000</span><span·class="w"> | 186 | ············</span><span·class="nc">flush_qlen</span><span·class="p">:</span><span·class="w">·</span><span·class="mi">1000</span><span·class="w"> |
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| 211 | level·to·<code·class="inline">info</code></p><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="ss">erl</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">kernel</span><span·class="w">·</span><span·class="ss">logger_level</span><span·class="w">·</span><span·class="ss">info</span><span·class="w"> | 211 | level·to·<code·class="inline">info</code></p><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="ss">erl</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">kernel</span><span·class="w">·</span><span·class="ss">logger_level</span><span·class="w">·</span><span·class="ss">info</span><span·class="w"> |
| 212 | </span><span·class="o">=</span><span·class="n">PROGRESS</span><span·class="w">·</span><span·class="n">REPORT</span><span·class="o">==</span><span·class="o">==</span><span·class="w">·</span><span·class="mi">4</span><span·class="o">-</span><span·class="n">Nov</span><span·class="o">-</span><span·class="mi">2019</span><span·class="p">:</span><span·class="p">:</span><span·class="mi">16</span><span·class="p">:</span><span·class="mi">33</span><span·class="p">:</span><span·class="mf">11.742069</span><span·class="w">·</span><span·class="o">==</span><span·class="o">=</span><span·class="w"> | 212 | </span><span·class="o">=</span><span·class="n">PROGRESS</span><span·class="w">·</span><span·class="n">REPORT</span><span·class="o">==</span><span·class="o">==</span><span·class="w">·</span><span·class="mi">4</span><span·class="o">-</span><span·class="n">Nov</span><span·class="o">-</span><span·class="mi">2019</span><span·class="p">:</span><span·class="p">:</span><span·class="mi">16</span><span·class="p">:</span><span·class="mi">33</span><span·class="p">:</span><span·class="mf">11.742069</span><span·class="w">·</span><span·class="o">==</span><span·class="o">=</span><span·class="w"> |
| 213 | ····</span><span·class="nc">application</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">kernel</span><span·class="w"> | 213 | ····</span><span·class="nc">application</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">kernel</span><span·class="w"> |
| 214 | ····</span><span·class="nc">started_at</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">nonode@nohost</span><span·class="w"> | 214 | ····</span><span·class="nc">started_at</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">nonode@nohost</span><span·class="w"> |
| 215 | </span><span·class="o">=</span><span·class="n">PROGRESS</span><span·class="w">·</span><span·class="n">REPORT</span><span·class="o">==</span><span·class="o">==</span><span·class="w">·</span><span·class="mi">4</span><span·class="o">-</span><span·class="n">Nov</span><span·class="o">-</span><span·class="mi">2019</span><span·class="p">:</span><span·class="p">:</span><span·class="mi">16</span><span·class="p">:</span><span·class="mi">33</span><span·class="p">:</span><span·class="mf">11.746546</span><span·class="w">·</span><span·class="o">==</span><span·class="o">=</span><span·class="w"> | 215 | </span><span·class="o">=</span><span·class="n">PROGRESS</span><span·class="w">·</span><span·class="n">REPORT</span><span·class="o">==</span><span·class="o">==</span><span·class="w">·</span><span·class="mi">4</span><span·class="o">-</span><span·class="n">Nov</span><span·class="o">-</span><span·class="mi">2019</span><span·class="p">:</span><span·class="p">:</span><span·class="mi">16</span><span·class="p">:</span><span·class="mi">33</span><span·class="p">:</span><span·class="mf">11.746546</span><span·class="w">·</span><span·class="o">==</span><span·class="o">=</span><span·class="w"> |
| 216 | ····</span><span·class="nc">application</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">stdlib</span><span·class="w"> | 216 | ····</span><span·class="nc">application</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">stdlib</span><span·class="w"> |
| 217 | ····</span><span·class="nc">started_at</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">nonode@nohost</span><span·class="w"> | 217 | ····</span><span·class="nc">started_at</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">nonode@nohost</span><span·class="w"> |
| 218 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V10</span><span·class="p">.</span><span·class="mf">5.3</span><span·class="w">··</span><span·class="p"·data-group-id="7 | 218 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V10</span><span·class="p">.</span><span·class="mf">5.3</span><span·class="w">··</span><span·class="p"·data-group-id="7774488140-1">(</span><span·class="ss">abort</span><span·class="w">·</span><span·class="ss">with</span><span·class="w">·</span><span·class="err">^</span><span·class="n">G</span><span·class="p"·data-group-id="7774488140-1">)</span><span·class="w"> |
| 219 | </span><span·class="mi">1</span><span·class="o">></span></code></pre><h2·id="configure-logger-formatter"·class="section-heading"> | 219 | </span><span·class="mi">1</span><span·class="o">></span></code></pre><h2·id="configure-logger-formatter"·class="section-heading"> |
| 220 | ··<a·href="#configure-logger-formatter"·class="hover-link"> | 220 | ··<a·href="#configure-logger-formatter"·class="hover-link"> |
| 221 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 221 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 222 | ··</a> | 222 | ··</a> |
| 223 | ··<span·class="text">Configure·Logger·formatter</span> | 223 | ··<span·class="text">Configure·Logger·formatter</span> |
| 224 | </h2> | 224 | </h2> |
| 225 | <p>In·order·to·fit·better·into·your·existing·logging·infrastructure·Logger·can | 225 | <p>In·order·to·fit·better·into·your·existing·logging·infrastructure·Logger·can |
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| 229 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 229 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 230 | ··</a> | 230 | ··</a> |
| 231 | ··<span·class="text">Single·line·configuration</span> | 231 | ··<span·class="text">Single·line·configuration</span> |
| 232 | </h3> | 232 | </h3> |
| 233 | <p>Since·single·line·logging·is·the·default·of·the·built-in·formatter·you·only·have | 233 | <p>Since·single·line·logging·is·the·default·of·the·built-in·formatter·you·only·have |
| 234 | to·provide·the·empty·map·as·the·configuration.·The·example·below·uses·the | 234 | to·provide·the·empty·map·as·the·configuration.·The·example·below·uses·the |
| 235 | <code·class="inline">sys.config</code>·to·change·the·formatter·configuration.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="ss">cat</span><span·class="w">·</span><span·class="ss">sys</span><span·class="p">.</span><span·class="ss">config</span><span·class="w"> | 235 | <code·class="inline">sys.config</code>·to·change·the·formatter·configuration.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="ss">cat</span><span·class="w">·</span><span·class="ss">sys</span><span·class="p">.</span><span·class="ss">config</span><span·class="w"> |
| 236 | </span><span·class="p"·data-group-id=" | 236 | </span><span·class="p"·data-group-id="1710234879-1">[</span><span·class="p"·data-group-id="1710234879-2">{</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="w"> |
| 237 | ··</span><span·class="p"·data-group-id=" | 237 | ··</span><span·class="p"·data-group-id="1710234879-3">[</span><span·class="p"·data-group-id="1710234879-4">{</span><span·class="ss">logger</span><span·class="p">,</span><span·class="w"> |
| 238 | ····</span><span·class="p"·data-group-id=" | 238 | ····</span><span·class="p"·data-group-id="1710234879-5">[</span><span·class="p"·data-group-id="1710234879-6">{</span><span·class="ss">handler</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">default</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">logger_std_h</span><span·class="p">,</span><span·class="w"> |
| 239 | ······</span><span·class="p"·data-group-id=" | 239 | ······</span><span·class="p"·data-group-id="1710234879-7">#{</span><span·class="w">·</span><span·class="ss">formatter</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="1710234879-8">{</span><span·class="ss">logger_formatter</span><span·c[·...·truncated·by·diffoscope;·len:·584,·SHA:·46923551880c41260578f0b31f6dcf58c3a55a13467b1af3fae7f2cf3b7d8aa7·...·]-1">]</span><span·class="p">.</span><span·class="w"> |
| 240 | </span><span·class="sc">$·</span><span·class="ss">erl</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">config</span><span·class="w">·</span><span·class="ss">sys</span><span·class="w"> | 240 | </span><span·class="sc">$·</span><span·class="ss">erl</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">config</span><span·class="w">·</span><span·class="ss">sys</span><span·class="w"> |
| 241 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V10</span><span·class="p">.</span><span·class="mf">5.1</span><span·class="w">··</span><span·class="p"·data-group-id=" | 241 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V10</span><span·class="p">.</span><span·class="mf">5.1</span><span·class="w">··</span><span·class="p"·data-group-id="1710234879-10">(</span><span·class="ss">abort</span><span·class="w">·</span><span·class="ss">with</span><span·class="w">·</span><span·class="err">^</span><span·class="n">G</span><span·class="p"·data-group-id="1710234879-10">)</span><span·class="gp·unselectable"> |
| 242 | 1>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">error</span><span·class="p"·data-group-id=" | 242 | 1>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">error</span><span·class="p"·data-group-id="1710234879-11">(</span><span·class="s">"Oh·noes,·an·error"</span><span·class="p"·data-group-id="1710234879-11">)</span><span·class="p">.</span><span·class="w"> |
| 243 | </span><span·class="mi">1962</span><span·class="o">-</span><span·class="mi">10</span><span·class="o">-</span><span·class="mi">03</span><span·class="n">T11</span><span·class="p">:</span><span·class="mi">07</span><span·class="p">:</span><span·class="mf">47.466763</span><span·class="o">-</span><span·class="mi">04</span><span·class="p">:</span><span·class="mi">00</span><span·class="w">·</span><span·class="nc">error</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Oh</span><span·class="w">·</span><span·class="ss">noes</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">an</span><span·class="w">·</span><span·class="ss">error</span></code></pre><p>However,·if·you·just·want·to·change·it·for·the·current·session·you·can·also·do | 243 | </span><span·class="mi">1962</span><span·class="o">-</span><span·class="mi">10</span><span·class="o">-</span><span·class="mi">03</span><span·class="n">T11</span><span·class="p">:</span><span·class="mi">07</span><span·class="p">:</span><span·class="mf">47.466763</span><span·class="o">-</span><span·class="mi">04</span><span·class="p">:</span><span·class="mi">00</span><span·class="w">·</span><span·class="nc">error</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Oh</span><span·class="w">·</span><span·class="ss">noes</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">an</span><span·class="w">·</span><span·class="ss">error</span></code></pre><p>However,·if·you·just·want·to·change·it·for·the·current·session·you·can·also·do |
| 244 | that.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">set_handler_config</span><span·class="p"·data-group-id=" | 244 | that.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">set_handler_config</span><span·class="p"·data-group-id="6948295901-1">(</span><span·class="ss">default</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">formatter</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6948295901-2">{</span><span·class="ss">logg[·...·truncated·by·diffoscope;·len:·268,·SHA:·869abf9a1aff02a251ca9fcf4755ece9a05f95241aedda3d419db248ed1baff3·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 245 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 245 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 246 | 2>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">error</span><span·class="p"·data-group-id=" | 246 | 2>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">error</span><span·class="p"·data-group-id="6948295901-4">(</span><span·class="s">"Oh·noes,·another·error"</span><span·class="p"·data-group-id="6948295901-4">)</span><span·class="p">.</span><span·class="w"> |
| 247 | </span><span·class="mi">1962</span><span·class="o">-</span><span·class="mi">10</span><span·class="o">-</span><span·class="mi">04</span><span·class="n">T15</span><span·class="p">:</span><span·class="mi">34</span><span·class="p">:</span><span·class="mf">02.648713</span><span·class="o">-</span><span·class="mi">04</span><span·class="p">:</span><span·class="mi">00</span><span·class="w">·</span><span·class="nc">error</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Oh</span><span·class="w">·</span><span·class="ss">noes</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">another</span><span·class="w">·</span><span·class="ss">error</span></code></pre><h4>See·also</h4><ul><li><a·href="logger_formatter.html#t:config/0">logger_formatter's·Configuration</a></li><li><a·href="logger_chapter.html#formatters">Formatters</a>·in·the·Logging·User's·Guide</li><li><a·href="logger.html#set_handler_config/3"><code·class="inline">logger:set_handler_config/3</code></a></li></ul><h3·id="add-file-and-line-number-to-log-entries"·class="section-heading"> | 247 | </span><span·class="mi">1962</span><span·class="o">-</span><span·class="mi">10</span><span·class="o">-</span><span·class="mi">04</span><span·class="n">T15</span><span·class="p">:</span><span·class="mi">34</span><span·class="p">:</span><span·class="mf">02.648713</span><span·class="o">-</span><span·class="mi">04</span><span·class="p">:</span><span·class="mi">00</span><span·class="w">·</span><span·class="nc">error</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Oh</span><span·class="w">·</span><span·class="ss">noes</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">another</span><span·class="w">·</span><span·class="ss">error</span></code></pre><h4>See·also</h4><ul><li><a·href="logger_formatter.html#t:config/0">logger_formatter's·Configuration</a></li><li><a·href="logger_chapter.html#formatters">Formatters</a>·in·the·Logging·User's·Guide</li><li><a·href="logger.html#set_handler_config/3"><code·class="inline">logger:set_handler_config/3</code></a></li></ul><h3·id="add-file-and-line-number-to-log-entries"·class="section-heading"> |
| 248 | ··<a·href="#add-file-and-line-number-to-log-entries"·class="hover-link"> | 248 | ··<a·href="#add-file-and-line-number-to-log-entries"·class="hover-link"> |
| 249 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 249 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 250 | ··</a> | 250 | ··</a> |
| 251 | ··<span·class="text">Add·file·and·line·number·to·log·entries</span> | 251 | ··<span·class="text">Add·file·and·line·number·to·log·entries</span> |
| 252 | </h3> | 252 | </h3> |
| 253 | <p>You·can·change·what·is·printed·to·the·log·by·using·the·formatter·template:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="ss">cat</span><span·class="w">·</span><span·class="ss">sys</span><span·class="p">.</span><span·class="ss">config</span><span·class="w"> | 253 | <p>You·can·change·what·is·printed·to·the·log·by·using·the·formatter·template:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="ss">cat</span><span·class="w">·</span><span·class="ss">sys</span><span·class="p">.</span><span·class="ss">config</span><span·class="w"> |
| 254 | </span><span·class="p"·data-group-id=" | 254 | </span><span·class="p"·data-group-id="2669247468-1">[</span><span·class="p"·data-group-id="2669247468-2">{</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="w"> |
| 255 | ··</span><span·class="p"·data-group-id=" | 255 | ··</span><span·class="p"·data-group-id="2669247468-3">[</span><span·class="p"·data-group-id="2669247468-4">{</span><span·class="ss">logger</span><span·class="p">,</span><span·class="w"> |
| 256 | ····</span><span·class="p"·data-group-id=" | 256 | ····</span><span·class="p"·data-group-id="2669247468-5">[</span><span·class="p"·data-group-id="2669247468-6">{</span><span·class="ss">handler</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">default</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">logger_std_h</span><span·class="p">,</span><span·class="w"> |
| 257 | ······</span><span·class="p"·data-group-id=" | 257 | ······</span><span·class="p"·data-group-id="2669247468-7">#{</span><span·class="w">·</span><span·class="ss">formatter</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="2669247468-8">{</span><span·class="ss">logger_formatter</span><span·class="p">,</span><span·class="w"> |
| 258 | ········</span><span·class="p"·data-group-id=" | 258 | ········</span><span·class="p"·data-group-id="2669247468-9">#{</span><span·class="w">·</span><span·class="ss">template</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="2669247468-10">[</span><span·class="ss">time</span><span·class="p">,</[·...·truncated·by·diffoscope;·len:·1058,·SHA:·1e5e3a50c88c50c2f9e8b7944219884ad57b3e358fa7dcc8988395bbc4fc8122·...·]-1">]</span><span·class="p">.</span><span·class="w"> |
| 259 | </span><span·class="sc">$·</span><span·class="ss">erl</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">config</span><span·class="w">·</span><span·class="ss">sys</span><span·class="w"> | 259 | </span><span·class="sc">$·</span><span·class="ss">erl</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">config</span><span·class="w">·</span><span·class="ss">sys</span><span·class="w"> |
| 260 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V10</span><span·class="p">.</span><span·class="mf">5.1</span><span·class="w">··</span><span·class="p"·data-group-id=" | 260 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V10</span><span·class="p">.</span><span·class="mf">5.1</span><span·class="w">··</span><span·class="p"·data-group-id="2669247468-11">(</span><span·class="ss">abort</span><span·class="w">·</span><span·class="ss">with</span><span·class="w">·</span><span·class="err">^</span><span·class="n">G</span><span·class="p"·data-group-id="2669247468-11">)</span><span·class="gp·unselectable"> |
| 261 | 1>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">error</span><span·class="p"·data-group-id=" | 261 | 1>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">error</span><span·class="p"·data-group-id="2669247468-12">(</span><span·class="s">"Oh·noes,·more·errors"</span><span·class="p">,</span><span·class="p"·data-group-id="2669247468-13">#{</span><span·class="w">·</span><span·class="ss">file</span><span·class="w">·</span><span·class="p">=></[·...·truncated·by·diffoscope;·len:·369,·SHA:·8bee2a911e26ac6ea89b133082493d5e3987a33b82942f7756408530afa650eb·...·]-12">)</span><span·class="p">.</span><span·class="w"> |
| 262 | </span><span·class="mi">1962</span><span·class="o">-</span><span·class="mi">10</span><span·class="o">-</span><span·class="mi">05</span><span·class="n">T07</span><span·class="p">:</span><span·class="mi">37</span><span·class="p">:</span><span·class="mf">44.104241</span><span·class="o">+</span><span·class="mi">02</span><span·class="p">:</span><span·class="mi">00</span><span·class="w">·</span><span·class="ss">shell</span><span·class="p">.</span><span·class="nc">erl</span><span·class="p">:</span><span·class="mi">1</span><span·class="w">·</span><span·class="nc">error</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Oh</span><span·class="w">·</span><span·class="ss">noes</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">more</span><span·class="w">·</span><span·class="ss">errors</span></code></pre><p>Note·that·file·and·line·have·to·be·added·in·the·metadata·by·the·caller·of | 262 | </span><span·class="mi">1962</span><span·class="o">-</span><span·class="mi">10</span><span·class="o">-</span><span·class="mi">05</span><span·class="n">T07</span><span·class="p">:</span><span·class="mi">37</span><span·class="p">:</span><span·class="mf">44.104241</span><span·class="o">+</span><span·class="mi">02</span><span·class="p">:</span><span·class="mi">00</span><span·class="w">·</span><span·class="ss">shell</span><span·class="p">.</span><span·class="nc">erl</span><span·class="p">:</span><span·class="mi">1</span><span·class="w">·</span><span·class="nc">error</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Oh</span><span·class="w">·</span><span·class="ss">noes</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">more</span><span·class="w">·</span><span·class="ss">errors</span></code></pre><p>Note·that·file·and·line·have·to·be·added·in·the·metadata·by·the·caller·of |
| 263 | <a·href="logger.html#log/3"><code·class="inline">logger:log/3</code></a>·as·otherwise·Logger·will·not·know·from·where·it·was·called.·The | 263 | <a·href="logger.html#log/3"><code·class="inline">logger:log/3</code></a>·as·otherwise·Logger·will·not·know·from·where·it·was·called.·The |
| 264 | file·and·line·number·are·automatically·added·if·you·use·the·<code·class="inline">?LOG_ERROR</code>·macros | 264 | file·and·line·number·are·automatically·added·if·you·use·the·<code·class="inline">?LOG_ERROR</code>·macros |
| 265 | in·<code·class="inline">kernel/include/logger.hrl</code>.</p><h4>See·also</h4><ul><li><a·href="logger_formatter.html#t:config/0">logger_formatter's·Configuration</a></li><li><a·href="logger_formatter.html#t:template/0">logger_formatter's·Template</a></li><li><a·href="logger.html#module-macros">Logger·Macros</a></li><li><a·href="logger_chapter.html#metadata">Metadata</a>·in·the·Logging·User's·Guide</li></ul><h2·id="configuring-handlers"·class="section-heading"> | 265 | in·<code·class="inline">kernel/include/logger.hrl</code>.</p><h4>See·also</h4><ul><li><a·href="logger_formatter.html#t:config/0">logger_formatter's·Configuration</a></li><li><a·href="logger_formatter.html#t:template/0">logger_formatter's·Template</a></li><li><a·href="logger.html#module-macros">Logger·Macros</a></li><li><a·href="logger_chapter.html#metadata">Metadata</a>·in·the·Logging·User's·Guide</li></ul><h2·id="configuring-handlers"·class="section-heading"> |
| 266 | ··<a·href="#configuring-handlers"·class="hover-link"> | 266 | ··<a·href="#configuring-handlers"·class="hover-link"> |
| 267 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 267 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 268 | ··</a> | 268 | ··</a> |
| Offset 271, 67 lines modified | Offset 271, 67 lines modified | ||
| 271 | <h3·id="print-logs-to-a-file"·class="section-heading"> | 271 | <h3·id="print-logs-to-a-file"·class="section-heading"> |
| 272 | ··<a·href="#print-logs-to-a-file"·class="hover-link"> | 272 | ··<a·href="#print-logs-to-a-file"·class="hover-link"> |
| 273 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 273 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 274 | ··</a> | 274 | ··</a> |
| 275 | ··<span·class="text">Print·logs·to·a·file</span> | 275 | ··<span·class="text">Print·logs·to·a·file</span> |
| 276 | </h3> | 276 | </h3> |
| 277 | <p>Instead·of·printing·the·logs·to·stdout·we·print·them·to·a·rotating·file·log.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="ss">cat</span><span·class="w">·</span><span·class="ss">sys</span><span·class="p">.</span><span·class="ss">config</span><span·class="w"> | 277 | <p>Instead·of·printing·the·logs·to·stdout·we·print·them·to·a·rotating·file·log.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="ss">cat</span><span·class="w">·</span><span·class="ss">sys</span><span·class="p">.</span><span·class="ss">config</span><span·class="w"> |
| 278 | </span><span·class="p"·data-group-id=" | 278 | </span><span·class="p"·data-group-id="5918624988-1">[</span><span·class="p"·data-group-id="5918624988-2">{</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="w"> |
| 279 | ··</span><span·class="p"·data-group-id=" | 279 | ··</span><span·class="p"·data-group-id="5918624988-3">[</span><span·class="p"·data-group-id="5918624988-4">{</span><span·class="ss">logger</span><span·class="p">,</span><span·class="w"> |
| 280 | ····</span><span·class="p"·data-group-id=" | 280 | ····</span><span·class="p"·data-group-id="5918624988-5">[</span><span·class="p"·data-group-id="5918624988-6">{</span><span·class="ss">handler</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">default</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">logger_std_h</span><span·class="p">,</span><span·class="w"> |
| 281 | ······</span><span·class="p"·data-group-id=" | 281 | ······</span><span·class="p"·data-group-id="5918624988-7">#{</span><span·class="w">·</span><span·class="ss">config</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="5918624988-8">#{</span><span·class="w">·</span><span·class="ss">file</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"log/erlang.log"</span><span·class="p">,</span><span·class="w"> |
| 282 | ······················</span><span·class="ss">max_no_bytes</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">4096</span><span·class="p">,</span><span·class="w"> | 282 | ······················</span><span·class="ss">max_no_bytes</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">4096</span><span·class="p">,</span><span·class="w"> |
| 283 | ······················</span><span·class="ss">max_no_files</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">5</span><span·class="p"·data-group-id=" | 283 | ······················</span><span·class="ss">max_no_files</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">5</span><span·class="p"·data-group-id="5918624988-8">}</span><span·class="p">,</span><span·class="w"> |
| 284 | ·········</span><span·class="ss">formatter</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 284 | ·········</span><span·class="ss">formatter</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="5918624988-9">{</span><span·class="ss">logger_formatter</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5918624988-10">#{</span><span·class="p"·data-group-id="5918624988-10">}</span><span·class="p"·data-group-id="591862[·...·truncated·by·diffoscope;·len:·375,·SHA:·325ad17f6064e47dab1ed7eb08c6c5fe417cb3a0145a4cb1e345ec109d3cdc8d·...·]-1">]</span><span·class="p">.</span><span·class="w"> |
| 285 | </span><span·class="sc">$·</span><span·class="ss">erl</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">config</span><span·class="w">·</span><span·class="ss">sys</span><span·class="w"> | 285 | </span><span·class="sc">$·</span><span·class="ss">erl</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">config</span><span·class="w">·</span><span·class="ss">sys</span><span·class="w"> |
| 286 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V10</span><span·class="p">.</span><span·class="mf">5.1</span><span·class="w">··</span><span·class="p"·data-group-id=" | 286 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V10</span><span·class="p">.</span><span·class="mf">5.1</span><span·class="w">··</span><span·class="p"·data-group-id="5918624988-11">(</span><span·class="ss">abort</span><span·class="w">·</span><span·class="ss">with</span><span·class="w">·</span><span·class="err">^</span><span·class="n">G</span><span·class="p"·data-group-id="5918624988-11">)</span><span·class="gp·unselectable"> |
| 287 | 1>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">error</span><span·class="p"·data-group-id=" | 287 | 1>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">error</span><span·class="p"·data-group-id="5918624988-12">(</span><span·class="s">"Oh·noes,·even·more·errors"</span><span·class="p"·data-group-id="5918624988-12">)</span><span·class="p">.</span><span·class="w"> |
| 288 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 288 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 289 | 2>·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">halt</span><span·class="p"·data-group-id=" | 289 | 2>·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">halt</span><span·class="p"·data-group-id="5918624988-13">(</span><span·class="p"·data-group-id="5918624988-13">)</span><span·class="p">.</span><span·class="w"> |
| 290 | </span><span·class="sc">$·</span><span·class="ss">cat</span><span·class="w">·</span><span·class="ss">log</span><span·class="o">/</span><span·class="ss">erlang</span><span·class="p">.</span><span·class="ss">log</span><span·class="w"> | 290 | </span><span·class="sc">$·</span><span·class="ss">cat</span><span·class="w">·</span><span·class="ss">log</span><span·class="o">/</span><span·class="ss">erlang</span><span·class="p">.</span><span·class="ss">log</span><span·class="w"> |
| 291 | </span><span·class="mi">2019</span><span·class="o">-</span><span·class="mi">10</span><span·class="o">-</span><span·class="mi">07</span><span·class="n">T11</span><span·class="p">:</span><span·class="mi">47</span><span·class="p">:</span><span·class="mf">16.837958</span><span·class="o">+</span><span·class="mi">02</span><span·class="p">:</span><span·class="mi">00</span><span·class="w">·</span><span·class="nc">error</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Oh</span><span·class="w">·</span><span·class="ss">noes</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">even</span><span·class="w">·</span><span·class="ss">more</span><span·class="w">·</span><span·class="ss">errors</span></code></pre><h4>See·also</h4><ul><li><a·href="logger_std_h.html"><code·class="inline">logger_std_h</code></a></li><li><a·href="logger_chapter.html#handlers">Handlers</a>·in·the·Logging·User's·Guide</li></ul><h3·id="debug-only-handler"·class="section-heading"> | 291 | </span><span·class="mi">2019</span><span·class="o">-</span><span·class="mi">10</span><span·class="o">-</span><span·class="mi">07</span><span·class="n">T11</span><span·class="p">:</span><span·class="mi">47</span><span·class="p">:</span><span·class="mf">16.837958</span><span·class="o">+</span><span·class="mi">02</span><span·class="p">:</span><span·class="mi">00</span><span·class="w">·</span><span·class="nc">error</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Oh</span><span·class="w">·</span><span·class="ss">noes</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">even</span><span·class="w">·</span><span·class="ss">more</span><span·class="w">·</span><span·class="ss">errors</span></code></pre><h4>See·also</h4><ul><li><a·href="logger_std_h.html"><code·class="inline">logger_std_h</code></a></li><li><a·href="logger_chapter.html#handlers">Handlers</a>·in·the·Logging·User's·Guide</li></ul><h3·id="debug-only-handler"·class="section-heading"> |
| 292 | ··<a·href="#debug-only-handler"·class="hover-link"> | 292 | ··<a·href="#debug-only-handler"·class="hover-link"> |
| 293 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 293 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 160 | sync·if·something·has·actually·been·logged.</p><p>Defaults·to·<code·class="inline">5000</code>·milliseconds.</p><p>If·<code·class="inline">no_repeat</code>·is·set·as·value,·the·repeated·sync·operation·is·disabled.·The | 160 | sync·if·something·has·actually·been·logged.</p><p>Defaults·to·<code·class="inline">5000</code>·milliseconds.</p><p>If·<code·class="inline">no_repeat</code>·is·set·as·value,·the·repeated·sync·operation·is·disabled.·The |
| 161 | user·can·also·call·the·<a·href="#filesync/1"><code·class="inline">filesync/1</code></a>·function·to·perform·a | 161 | user·can·also·call·the·<a·href="#filesync/1"><code·class="inline">filesync/1</code></a>·function·to·perform·a |
| 162 | disk_log·sync.</p></li></ul><p>Other·configuration·parameters·exist,·to·be·used·for·customizing·the·overload | 162 | disk_log·sync.</p></li></ul><p>Other·configuration·parameters·exist,·to·be·used·for·customizing·the·overload |
| 163 | protection·behaviour.·The·same·parameters·are·used·both·in·the·standard·handler | 163 | protection·behaviour.·The·same·parameters·are·used·both·in·the·standard·handler |
| 164 | and·the·disk_log·handler,·and·are·documented·in·the | 164 | and·the·disk_log·handler,·and·are·documented·in·the |
| 165 | <a·href="logger_chapter.html#overload_protection"><code·class="inline">User's·Guide</code></a>.</p><p>Notice·that·when·changing·the·configuration·of·the·handler·in·runtime,·the | 165 | <a·href="logger_chapter.html#overload_protection"><code·class="inline">User's·Guide</code></a>.</p><p>Notice·that·when·changing·the·configuration·of·the·handler·in·runtime,·the |
| 166 | disk_log·options·(<code·class="inline">file</code>,·<code·class="inline">type</code>,·<code·class="inline">max_no_files</code>,·<code·class="inline">max_no_bytes</code>)·must·not·be | 166 | disk_log·options·(<code·class="inline">file</code>,·<code·class="inline">type</code>,·<code·class="inline">max_no_files</code>,·<code·class="inline">max_no_bytes</code>)·must·not·be |
| 167 | modified.</p><p>Example·of·adding·a·disk_log·handler:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">add_handler</span><span·class="p"·data-group-id=" | 167 | modified.</p><p>Example·of·adding·a·disk_log·handler:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">add_handler</span><span·class="p"·data-group-id="5777969880-1">(</span><span·class="ss">my_disk_log_h</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">logger_disk_log_h</span><span·class="p">,</span><span·class="w"> |
| 168 | ···················</span><span·class="p"·data-group-id=" | 168 | ···················</span><span·class="p"·data-group-id="5777969880-2">#{</span><span·class="ss">config</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="5777969880-3">#{</span><span·class="ss">file</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"./my_disk_log"</span><span·class="p">,</span><span·class="w"> |
| 169 | ·································</span><span·class="ss">type</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">wrap</span><span·class="p">,</span><span·class="w"> | 169 | ·································</span><span·class="ss">type</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">wrap</span><span·class="p">,</span><span·class="w"> |
| 170 | ·································</span><span·class="ss">max_no_files</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">4</span><span·class="p">,</span><span·class="w"> | 170 | ·································</span><span·class="ss">max_no_files</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">4</span><span·class="p">,</span><span·class="w"> |
| 171 | ·································</span><span·class="ss">max_no_bytes</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">10000</span><span·class="p">,</span><span·class="w"> | 171 | ·································</span><span·class="ss">max_no_bytes</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">10000</span><span·class="p">,</span><span·class="w"> |
| 172 | ·································</span><span·class="ss">filesync_repeat_interval</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">1000</span><span·class="p"·data-group-id=" | 172 | ·································</span><span·class="ss">filesync_repeat_interval</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">1000</span><span·class="p"·data-group-id="5777969880-3">}</span><span·class="p"·data-group-id="5777969880-2">}</span><span·class="p"·data-group-id="5777969880-1">)</span><span·class="p">.</span></code></pre><p>To·use·the·disk_log·handler·instead·of·the·default·standard·handler·when |
| 173 | starting·an·Erlang·node,·change·the·Kernel·default·logger·to·use | 173 | starting·an·Erlang·node,·change·the·Kernel·default·logger·to·use |
| 174 | <code·class="inline">logger_disk_log_h</code>.·Example:</p><pre><code·class="text">erl·-kernel·logger·'[{handler,default,logger_disk_log_h, | 174 | <code·class="inline">logger_disk_log_h</code>.·Example:</p><pre><code·class="text">erl·-kernel·logger·'[{handler,default,logger_disk_log_h, |
| 175 | ······················#{config·=>·#{file·=>·"./system_disk_log"}}}]'</code></pre><h2·id="module-see-also"·class="section-heading"> | 175 | ······················#{config·=>·#{file·=>·"./system_disk_log"}}}]'</code></pre><h2·id="module-see-also"·class="section-heading"> |
| 176 | ··<a·href="#module-see-also"·class="hover-link"> | 176 | ··<a·href="#module-see-also"·class="hover-link"> |
| 177 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 177 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 178 | ··</a> | 178 | ··</a> |
| 179 | ··<span·class="text">See·Also</span> | 179 | ··<span·class="text">See·Also</span> |
| Offset 245, 35 lines modified | Offset 245, 35 lines modified | ||
| 245 | ······</div> | 245 | ······</div> |
| 246 | <p>This·filter·provides·a·way·of·filtering·log·events·based·on·a·<code·class="inline">domain</code>·field·in | 246 | <p>This·filter·provides·a·way·of·filtering·log·events·based·on·a·<code·class="inline">domain</code>·field·in |
| 247 | <code·class="inline">Metadata</code>.·This·field·is·optional,·and·the·purpose·of·using·it·is·to·group·log | 247 | <code·class="inline">Metadata</code>.·This·field·is·optional,·and·the·purpose·of·using·it·is·to·group·log |
| 248 | events·from,·for·example,·a·specific·functional·area.·This·allows·filtering·or | 248 | events·from,·for·example,·a·specific·functional·area.·This·allows·filtering·or |
| 249 | other·specialized·treatment·in·a·Logger·handler.</p><p>A·domain·field·must·be·a·list·of·atoms,·creating·smaller·and·more·specialized | 249 | other·specialized·treatment·in·a·Logger·handler.</p><p>A·domain·field·must·be·a·list·of·atoms,·creating·smaller·and·more·specialized |
| 250 | domains·as·the·list·grows·longer.·The·greatest·domain·is·<code·class="inline">[]</code>,·which·comprises | 250 | domains·as·the·list·grows·longer.·The·greatest·domain·is·<code·class="inline">[]</code>,·which·comprises |
| 251 | all·possible·domains.</p><p>For·example,·consider·the·following·domains:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">D1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 251 | all·possible·domains.</p><p>For·example,·consider·the·following·domains:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">D1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7782744412-1">[</span><span·class="ss">otp</span><span·class="p"·data-group-id="7782744412-1">]</span><span·class="w"> |
| 252 | </span><span·class="n">D2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 252 | </span><span·class="n">D2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7782744412-2">[</span><span·class="ss">otp</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">sasl</span><span·class="p"·data-group-id="7782744412-2">]</span></code></pre><p><code·class="inline">D1</code>·is·the·greatest·of·the·two,·and·is·said·to·be·a·super-domain·of·<code·class="inline">D2</code>.·<code·class="inline">D2</code> |
| 253 | is·a·sub-domain·<code·class="inline">D1</code>.·Both·<code·class="inline">D1</code>·and·<code·class="inline">D2</code>·are·sub-domains·of·<code·class="inline">[]</code>.</p><p>The·above·domains·are·used·for·logs·originating·from·Erlang/OTP.·D1·specifies | 253 | is·a·sub-domain·<code·class="inline">D1</code>.·Both·<code·class="inline">D1</code>·and·<code·class="inline">D2</code>·are·sub-domains·of·<code·class="inline">[]</code>.</p><p>The·above·domains·are·used·for·logs·originating·from·Erlang/OTP.·D1·specifies |
| 254 | that·the·log·event·comes·from·Erlang/OTP·in·general,·and·D2·indicates·that·the | 254 | that·the·log·event·comes·from·Erlang/OTP·in·general,·and·D2·indicates·that·the |
| 255 | log·event·is·a·so·called·<a·href="logger_chapter.html#sasl_reports">SASL·report</a>.</p><p>The·<code·class="inline">Extra</code>·parameter·to·the·<a·href="#domain/2"><code·class="inline">domain/2</code></a>·function·is·specified·when | 255 | log·event·is·a·so·called·<a·href="logger_chapter.html#sasl_reports">SASL·report</a>.</p><p>The·<code·class="inline">Extra</code>·parameter·to·the·<a·href="#domain/2"><code·class="inline">domain/2</code></a>·function·is·specified·when |
| 256 | adding·the·filter·via·<a·href="logger.html#add_primary_filter/2"><code·class="inline">logger:add_primary_filter/2</code></a>·or | 256 | adding·the·filter·via·<a·href="logger.html#add_primary_filter/2"><code·class="inline">logger:add_primary_filter/2</code></a>·or |
| 257 | <a·href="logger.html#add_handler_filter/3"><code·class="inline">logger:add_handler_filter/3</code></a>.</p><p>The·filter·compares·the·value·of·the·<code·class="inline">domain</code>·field·in·the·log·event's·metadata | 257 | <a·href="logger.html#add_handler_filter/3"><code·class="inline">logger:add_handler_filter/3</code></a>.</p><p>The·filter·compares·the·value·of·the·<code·class="inline">domain</code>·field·in·the·log·event's·metadata |
| 258 | (<code·class="inline">Domain</code>)·against·<code·class="inline">MatchDomain</code>.·The·filter·matches·if·the·value·of·<code·class="inline">Compare</code> | 258 | (<code·class="inline">Domain</code>)·against·<code·class="inline">MatchDomain</code>.·The·filter·matches·if·the·value·of·<code·class="inline">Compare</code> |
| 259 | is:</p><ul><li><p><strong><code·class="inline">sub</code></strong>·-·and·<code·class="inline">Domain</code>·is·equal·to·or·a·sub-domain·of·<code·class="inline">MatchDomain</code>,·that | 259 | is:</p><ul><li><p><strong><code·class="inline">sub</code></strong>·-·and·<code·class="inline">Domain</code>·is·equal·to·or·a·sub-domain·of·<code·class="inline">MatchDomain</code>,·that |
| 260 | is,·if·<code·class="inline">MatchDomain</code>·is·a·prefix·of·<code·class="inline">Domain</code>.</p></li><li><p><strong><code·class="inline">super</code></strong>·-·and·<code·class="inline">Domain</code>·is·equal·to·or·a·super-domain·of·<code·class="inline">MatchDomain</code>, | 260 | is,·if·<code·class="inline">MatchDomain</code>·is·a·prefix·of·<code·class="inline">Domain</code>.</p></li><li><p><strong><code·class="inline">super</code></strong>·-·and·<code·class="inline">Domain</code>·is·equal·to·or·a·super-domain·of·<code·class="inline">MatchDomain</code>, |
| 261 | that·is,·if·<code·class="inline">Domain</code>·is·a·prefix·of·<code·class="inline">MatchDomain</code>.</p></li><li><p><strong><code·class="inline">equal</code></strong>·-·and·<code·class="inline">Domain</code>·is·equal·to·<code·class="inline">MatchDomain</code>.</p></li><li><p><strong><code·class="inline">not_equal</code></strong>·-·and·<code·class="inline">Domain</code>·differs·from·<code·class="inline">MatchDomain</code>,·or·if·there·is·no | 261 | that·is,·if·<code·class="inline">Domain</code>·is·a·prefix·of·<code·class="inline">MatchDomain</code>.</p></li><li><p><strong><code·class="inline">equal</code></strong>·-·and·<code·class="inline">Domain</code>·is·equal·to·<code·class="inline">MatchDomain</code>.</p></li><li><p><strong><code·class="inline">not_equal</code></strong>·-·and·<code·class="inline">Domain</code>·differs·from·<code·class="inline">MatchDomain</code>,·or·if·there·is·no |
| 262 | domain·field·in·metadata.</p></li><li><p><strong><code·class="inline">undefined</code></strong>·-·and·there·is·no·domain·field·in·metadata.·In·this·case | 262 | domain·field·in·metadata.</p></li><li><p><strong><code·class="inline">undefined</code></strong>·-·and·there·is·no·domain·field·in·metadata.·In·this·case |
| 263 | <code·class="inline">MatchDomain</code>·must·be·set·to·<code·class="inline">[]</code>.</p></li></ul><p>If·the·filter·matches·and·<code·class="inline">Action</code>·is·<code·class="inline">log</code>,·the·log·event·is·allowed.·If·the | 263 | <code·class="inline">MatchDomain</code>·must·be·set·to·<code·class="inline">[]</code>.</p></li></ul><p>If·the·filter·matches·and·<code·class="inline">Action</code>·is·<code·class="inline">log</code>,·the·log·event·is·allowed.·If·the |
| 264 | filter·matches·and·<code·class="inline">Action</code>·is·<code·class="inline">stop</code>,·the·log·event·is·stopped.</p><p>If·the·filter·does·not·match,·it·returns·<code·class="inline">ignore</code>,·meaning·that·other·filters, | 264 | filter·matches·and·<code·class="inline">Action</code>·is·<code·class="inline">stop</code>,·the·log·event·is·stopped.</p><p>If·the·filter·does·not·match,·it·returns·<code·class="inline">ignore</code>,·meaning·that·other·filters, |
| 265 | or·the·value·of·the·configuration·parameter·<code·class="inline">filter_default</code>,·decide·if·the | 265 | or·the·value·of·the·configuration·parameter·<code·class="inline">filter_default</code>,·decide·if·the |
| 266 | event·is·allowed·or·not.</p><p>Log·events·that·do·not·contain·any·domain·field,·match·only·when·<code·class="inline">Compare</code>·is | 266 | event·is·allowed·or·not.</p><p>Log·events·that·do·not·contain·any·domain·field,·match·only·when·<code·class="inline">Compare</code>·is |
| 267 | equal·to·<code·class="inline">undefined</code>·or·<code·class="inline">not_equal</code>.</p><p>Example:·stop·all·events·with·domain·<code·class="inline">[otp,·sasl·|·_]</code></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">set_handler_config</span><span·class="p"·data-group-id=" | 267 | equal·to·<code·class="inline">undefined</code>·or·<code·class="inline">not_equal</code>.</p><p>Example:·stop·all·events·with·domain·<code·class="inline">[otp,·sasl·|·_]</code></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">set_handler_config</span><span·class="p"·data-group-id="2218203867-1">(</span><span·class="ss">h1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">filter_default</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">log</span><span·class="p"·data-group-id="2218203867-1">)</span><span·class="p">.</span><span·class="w">·</span><span·class="c1">%·this·is·the·default</span><span·class="w"> |
| 268 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 268 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 269 | 2>·</span><span·class="n">Filter</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 269 | 2>·</span><span·class="n">Filter</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2218203867-2">{</span><span·class="k">fun</span><span·class="w">·</span><span·class="nc">logger_filters</span><span·class="p">:</span><span·class="ss">domain</span><span·class="p">/</span><span·class="mi">2</span><span·class="p">,</span><span·class="w">·</[·...·truncated·by·diffoscope;·len:·512,·SHA:·289c5a96543bb74cccd5497b93604b0064368c26054b3b464849d97963af9215·...·]-2">}</span><span·class="p">.</span><span·class="w"> |
| 270 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="gp·unselectable"> | 270 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="gp·unselectable"> |
| 271 | 3>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">add_handler_filter</span><span·class="p"·data-group-id=" | 271 | 3>·</span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">add_handler_filter</span><span·class="p"·data-group-id="2218203867-5">(</span><span·class="ss">h1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">no_sasl</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Filter</span><span·class="p"·data-group-id="2218203867-5">)</span><span·class="p">.</span><span·class="w"> |
| 272 | </span><span·class="ss">ok</span></code></pre> | 272 | </span><span·class="ss">ok</span></code></pre> |
| 273 | ··</section> | 273 | ··</section> |
| 274 | </section> | 274 | </section> |
| 275 | <section·class="detail"·id="level/2"> | 275 | <section·class="detail"·id="level/2"> |
| 276 | ··<div·class="detail-header"> | 276 | ··<div·class="detail-header"> |
| 277 | ····<a·href="#level/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 277 | ····<a·href="#level/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 308, 17 lines modified | Offset 308, 17 lines modified | ||
| 308 | matches·log·events·by·comparing·the·log·level·with·a·specified·<code·class="inline">MatchLevel</code></p><p>The·<code·class="inline">Extra</code>·parameter·is·specified·when·adding·the·filter·via | 308 | matches·log·events·by·comparing·the·log·level·with·a·specified·<code·class="inline">MatchLevel</code></p><p>The·<code·class="inline">Extra</code>·parameter·is·specified·when·adding·the·filter·via |
| 309 | <a·href="logger.html#add_primary_filter/2"><code·class="inline">logger:add_primary_filter/2</code></a>·or·<a·href="logger.html#add_handler_filter/3"><code·class="inline">logger:add_handler_filter/3</code></a>.</p><p>The·filter·compares·the·value·of·the·event's·log·level·(<code·class="inline">Level</code>)·to·<code·class="inline">MatchLevel</code> | 309 | <a·href="logger.html#add_primary_filter/2"><code·class="inline">logger:add_primary_filter/2</code></a>·or·<a·href="logger.html#add_handler_filter/3"><code·class="inline">logger:add_handler_filter/3</code></a>.</p><p>The·filter·compares·the·value·of·the·event's·log·level·(<code·class="inline">Level</code>)·to·<code·class="inline">MatchLevel</code> |
| 310 | by·calling | 310 | by·calling |
| 311 | <a·href="logger.html#compare_levels/2"><code·class="inline">logger:compare_levels(Level,·MatchLevel)</code></a>.·The | 311 | <a·href="logger.html#compare_levels/2"><code·class="inline">logger:compare_levels(Level,·MatchLevel)</code></a>.·The |
| 312 | filter·matches·if·the·value·of·<code·class="inline">Operator</code>·is:</p><ul><li><p><strong><code·class="inline">neq</code></strong>·-·and·the·compare·function·returns·<code·class="inline">lt</code>·or·<code·class="inline">gt</code>.</p></li><li><p><strong><code·class="inline">eq</code></strong>·-·and·the·compare·function·returns·<code·class="inline">eq</code>.</p></li><li><p><strong><code·class="inline">lt</code></strong>·-·and·the·compare·function·returns·<code·class="inline">lt</code>.</p></li><li><p><strong><code·class="inline">gt</code></strong>·-·and·the·compare·function·returns·<code·class="inline">gt</code>.</p></li><li><p><strong><code·class="inline">lteq</code></strong>·-·and·the·compare·function·returns·<code·class="inline">lt</code>·or·<code·class="inline">eq</code>.</p></li><li><p><strong><code·class="inline">gteq</code></strong>·-·and·the·compare·function·returns·<code·class="inline">gt</code>·or·<code·class="inline">eq</code>.</p></li></ul><p>If·the·filter·matches·and·<code·class="inline">Action</code>·is·<code·class="inline">log</code>,·the·log·event·is·allowed.·If·the | 312 | filter·matches·if·the·value·of·<code·class="inline">Operator</code>·is:</p><ul><li><p><strong><code·class="inline">neq</code></strong>·-·and·the·compare·function·returns·<code·class="inline">lt</code>·or·<code·class="inline">gt</code>.</p></li><li><p><strong><code·class="inline">eq</code></strong>·-·and·the·compare·function·returns·<code·class="inline">eq</code>.</p></li><li><p><strong><code·class="inline">lt</code></strong>·-·and·the·compare·function·returns·<code·class="inline">lt</code>.</p></li><li><p><strong><code·class="inline">gt</code></strong>·-·and·the·compare·function·returns·<code·class="inline">gt</code>.</p></li><li><p><strong><code·class="inline">lteq</code></strong>·-·and·the·compare·function·returns·<code·class="inline">lt</code>·or·<code·class="inline">eq</code>.</p></li><li><p><strong><code·class="inline">gteq</code></strong>·-·and·the·compare·function·returns·<code·class="inline">gt</code>·or·<code·class="inline">eq</code>.</p></li></ul><p>If·the·filter·matches·and·<code·class="inline">Action</code>·is·<code·class="inline">log</code>,·the·log·event·is·allowed.·If·the |
| 313 | filter·matches·and·<code·class="inline">Action</code>·is·<code·class="inline">stop</code>,·the·log·event·is·stopped.</p><p>If·the·filter·does·not·match,·it·returns·<code·class="inline">ignore</code>,·meaning·that·other·filters, | 313 | filter·matches·and·<code·class="inline">Action</code>·is·<code·class="inline">stop</code>,·the·log·event·is·stopped.</p><p>If·the·filter·does·not·match,·it·returns·<code·class="inline">ignore</code>,·meaning·that·other·filters, |
| 314 | or·the·value·of·the·configuration·parameter·<code·class="inline">filter_default</code>,·will·decide·if·the | 314 | or·the·value·of·the·configuration·parameter·<code·class="inline">filter_default</code>,·will·decide·if·the |
| 315 | event·is·allowed·or·not.</p><p>Example:·only·allow·debug·level·log·events</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">set_handler_config</span><span·class="p"·data-group-id=" | 315 | event·is·allowed·or·not.</p><p>Example:·only·allow·debug·level·log·events</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">set_handler_config</span><span·class="p"·data-group-id="5467256389-1">(</span><span·class="ss">h1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">filter_default</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">stop</span><span·class="p"·data-group-id="5467256389-1">)</span><span·class="p">.</span><span·class="w"> |
| 316 | </span><span·class="n">Filter</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 316 | </span><span·class="n">Filter</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="5467256389-2">{</span><span·class="k">fun</span><span·class="w">·</span><span·class="nc">logger_filters</span><span·class="p">:</span><span·class="ss">level</span><span·class="p">/</span><span·class="mi">2</span><span·class="p">,</span><span·class="w">·</s[·...·truncated·by·diffoscope;·len:·329,·SHA:·d9d5c7af7cef0ed449f4ab24b5b39410031ab9506ee447ea6791023974cae4de·...·]-2">}</span><span·class="p">.</span><span·class="w"> |
| 317 | </span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">add_handler_filter</span><span·class="p"·data-group-id=" | 317 | </span><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">add_handler_filter</span><span·class="p"·data-group-id="5467256389-4">(</span><span·class="ss">h1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">debug_only</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Filter</span><span·class="p"·data-group-id="5467256389-4">)</span><span·class="p">.</span><span·class="w"> |
| 318 | </span><span·class="ss">ok</span></code></pre> | 318 | </span><span·class="ss">ok</span></code></pre> |
| 319 | ··</section> | 319 | ··</section> |
| 320 | </section> | 320 | </section> |
| 321 | <section·class="detail"·id="progress/2"> | 321 | <section·class="detail"·id="progress/2"> |
| 322 | ··<div·class="detail-header"> | 322 | ··<div·class="detail-header"> |
| 323 | ····<a·href="#progress/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 323 | ····<a·href="#progress/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 181, 17 lines modified | Offset 181, 17 lines modified | ||
| 181 | but·only·performs·a·new·sync·if·something·has·actually·been·logged.</p><p>If·<code·class="inline">no_repeat</code>·is·set·as·value,·the·repeated·file·sync·operation·is·disabled, | 181 | but·only·performs·a·new·sync·if·something·has·actually·been·logged.</p><p>If·<code·class="inline">no_repeat</code>·is·set·as·value,·the·repeated·file·sync·operation·is·disabled, |
| 182 | and·it·is·the·operating·system·settings·that·determine·how·quickly·or·slowly | 182 | and·it·is·the·operating·system·settings·that·determine·how·quickly·or·slowly |
| 183 | data·is·written·to·disk.·The·user·can·also·call·the·<a·href="#filesync/1"><code·class="inline">filesync/1</code></a>·function·to | 183 | data·is·written·to·disk.·The·user·can·also·call·the·<a·href="#filesync/1"><code·class="inline">filesync/1</code></a>·function·to |
| 184 | perform·a·file·sync.</p><p>Defaults·to·<code·class="inline">5000</code>·milliseconds.</p></li></ul><p>Other·configuration·parameters·exist,·to·be·used·for·customizing·the·overload | 184 | perform·a·file·sync.</p><p>Defaults·to·<code·class="inline">5000</code>·milliseconds.</p></li></ul><p>Other·configuration·parameters·exist,·to·be·used·for·customizing·the·overload |
| 185 | protection·behaviour.·The·same·parameters·are·used·both·in·the·standard·handler | 185 | protection·behaviour.·The·same·parameters·are·used·both·in·the·standard·handler |
| 186 | and·the·disk_log·handler,·and·are·documented·in·the | 186 | and·the·disk_log·handler,·and·are·documented·in·the |
| 187 | <a·href="logger_chapter.html#overload_protection"><code·class="inline">User's·Guide</code></a>.</p><p>Notice·that·if·changing·the·configuration·of·the·handler·in·runtime,·the·<code·class="inline">type</code>, | 187 | <a·href="logger_chapter.html#overload_protection"><code·class="inline">User's·Guide</code></a>.</p><p>Notice·that·if·changing·the·configuration·of·the·handler·in·runtime,·the·<code·class="inline">type</code>, |
| 188 | <code·class="inline">file</code>,·or·<code·class="inline">modes</code>·parameters·must·not·be·modified.</p><p>Example·of·adding·a·standard·handler:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">add_handler</span><span·class="p"·data-group-id=" | 188 | <code·class="inline">file</code>,·or·<code·class="inline">modes</code>·parameters·must·not·be·modified.</p><p>Example·of·adding·a·standard·handler:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">logger</span><span·class="p">:</span><span·class="nf">add_handler</span><span·class="p"·data-group-id="9994584196-1">(</span><span·class="ss">my_standard_h</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">logger_std_h</span><span·class="p">,</span><span·class="w"> |
| 189 | ···················</span><span·class="p"·data-group-id=" | 189 | ···················</span><span·class="p"·data-group-id="9994584196-2">#{</span><span·class="ss">config</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="9994584196-3">#{</span><span·class="ss">file</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"./system_info.log"</span><span·class="p">,</span><span·class="w"> |
| 190 | ·································</span><span·class="ss">filesync_repeat_interval</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">1000</span><span·class="p"·data-group-id=" | 190 | ·································</span><span·class="ss">filesync_repeat_interval</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">1000</span><span·class="p"·data-group-id="9994584196-3">}</span><span·class="p"·data-group-id="9994584196-2">}</span><span·class="p"·data-group-id="9994584196-1">)</span><span·class="p">.</span></code></pre><p>To·set·the·default·handler,·that·starts·initially·with·the·Kernel·application, |
| 191 | to·log·to·file·instead·of·<a·href="../../../../lib/stdlib-6.2.1/doc/html/io.html#t:standard_io/0"><code·class="inline">standard_io</code></a>,·change·the | 191 | to·log·to·file·instead·of·<a·href="../../../../lib/stdlib-6.2.1/doc/html/io.html#t:standard_io/0"><code·class="inline">standard_io</code></a>,·change·the |
| 192 | Kernel·default·logger·configuration.·Example:</p><pre><code·class="text">erl·-kernel·logger·'[{handler,default,logger_std_h, | 192 | Kernel·default·logger·configuration.·Example:</p><pre><code·class="text">erl·-kernel·logger·'[{handler,default,logger_std_h, |
| 193 | ······················#{config·=>·#{file·=>·"./log.log"}}}]'</code></pre><p>An·example·of·how·to·replace·the·standard·handler·with·a·disk_log·handler·at | 193 | ······················#{config·=>·#{file·=>·"./log.log"}}}]'</code></pre><p>An·example·of·how·to·replace·the·standard·handler·with·a·disk_log·handler·at |
| 194 | startup·is·found·in·the·<a·href="logger_disk_log_h.html"><code·class="inline">logger_disk_log_h</code></a>·manual.</p><h2·id="module-see-also"·class="section-heading"> | 194 | startup·is·found·in·the·<a·href="logger_disk_log_h.html"><code·class="inline">logger_disk_log_h</code></a>·manual.</p><h2·id="module-see-also"·class="section-heading"> |
| 195 | ··<a·href="#module-see-also"·class="hover-link"> | 195 | ··<a·href="#module-see-also"·class="hover-link"> |
| 196 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 196 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 197 | ··</a> | 197 | ··</a> |
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| 553 | ··········<pre·translate="no"><span·class="attribute">-type</span>·ifaddrs_filter_fun()·::·fun((<a·href="#t:ifaddrs/0">ifaddrs</a>())·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:boolean/0">boolean</a>()).</pre> | 553 | ··········<pre·translate="no"><span·class="attribute">-type</span>·ifaddrs_filter_fun()·::·fun((<a·href="#t:ifaddrs/0">ifaddrs</a>())·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:boolean/0">boolean</a>()).</pre> |
| 554 | ······</div> | 554 | ······</div> |
| 555 | <p>Interface·address·filtering·selector·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:function/0"><code·class="inline">function/0</code></a>.</p><p>For·each·<code·class="inline">ifaddrs</code>·entry,·return·either·<code·class="inline">true</code>·to·keep·the·entry | 555 | <p>Interface·address·filtering·selector·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:function/0"><code·class="inline">function/0</code></a>.</p><p>For·each·<code·class="inline">ifaddrs</code>·entry,·return·either·<code·class="inline">true</code>·to·keep·the·entry |
| 556 | or·<code·class="inline">false</code>·to·discard·the·entry.</p><p>For·example,·to·get·an·interface·list·which·only·contains | 556 | or·<code·class="inline">false</code>·to·discard·the·entry.</p><p>For·example,·to·get·an·interface·list·which·only·contains |
| 557 | non-<code·class="inline">loopback</code>·<code·class="inline">inet</code>·interfaces:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">net</span><span·class="p">:</span><span·class="nf">getifaddrs</span><span·class="p"·data-group-id=" | 557 | non-<code·class="inline">loopback</code>·<code·class="inline">inet</code>·interfaces:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">net</span><span·class="p">:</span><span·class="nf">getifaddrs</span><span·class="p"·data-group-id="6816861300-1">(</span><span·class="w"> |
| 558 | ····</span><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id=" | 558 | ····</span><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="6816861300-2">(</span><span·class="p"·data-group-id="6816861300-3">#{</span><span·class="w">·</span><span·class="ss">addr</span><span·class="w">··</span><span·class="p">:=</span><span·class="w">·</span><span·class="p"·data-group-id="6816861300-4">#{</span>[·...·truncated·by·diffoscope;·len:·172,·SHA:·547e8da9968029f3a952cebe215e81b80ba49d3e78134a9e3eef3fed911b9095·...·]-4">}</span><span·class="p">,</span><span·class="w"> |
| 559 | ············</span><span·class="ss">flags</span><span·class="w">·</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">Flags</span><span·class="p"·data-group-id=" | 559 | ············</span><span·class="ss">flags</span><span·class="w">·</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">Flags</span><span·class="p"·data-group-id="6816861300-3">}</span><span·class="p"·data-group-id="6816861300-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 560 | ··········</span><span·class="ow">not</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">member</span><span·class="p"·data-group-id=" | 560 | ··········</span><span·class="ow">not</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">member</span><span·class="p"·data-group-id="6816861300-5">(</span><span·class="ss">loopback</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Flags</span><span·class="p"·data-group-id="6816861300-5">)</span><span·class="p">;</span><span·class="w"> |
| 561 | ········</span><span·class="p"·data-group-id=" | 561 | ········</span><span·class="p"·data-group-id="6816861300-6">(</span><span·class="p">_</span><span·class="p"·data-group-id="6816861300-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 562 | ··········</span><span·class="ss">false</span><span·class="w"> | 562 | ··········</span><span·class="ss">false</span><span·class="w"> |
| 563 | ····</span><span·class="k">end</span><span·class="p"·data-group-id=" | 563 | ····</span><span·class="k">end</span><span·class="p"·data-group-id="6816861300-1">)</span><span·class="p">.</span></code></pre> |
| 564 | ··</section> | 564 | ··</section> |
| 565 | </section> | 565 | </section> |
| 566 | <section·class="detail"·id="t:ifaddrs_filter_map/0"> | 566 | <section·class="detail"·id="t:ifaddrs_filter_map/0"> |
| 567 | ··<div·class="detail-header"> | 567 | ··<div·class="detail-header"> |
| 568 | ····<a·href="#t:ifaddrs_filter_map/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·type"> | 568 | ····<a·href="#t:ifaddrs_filter_map/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·type"> |
| 569 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 569 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 475 | ···················Name·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>(), | 475 | ···················Name·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>(), |
| 476 | ···················Port·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0">non_neg_integer</a>(), | 476 | ···················Port·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0">non_neg_integer</a>(), |
| 477 | ···················Reason·::·address·|·<a·href="file.html#t:posix/0">file:posix</a>().</pre> | 477 | ···················Reason·::·address·|·<a·href="file.html#t:posix/0">file:posix</a>().</pre> |
| 478 | ······</div> | 478 | ······</div> |
| 479 | <p>Returns·the·names·and·associated·port·numbers·of·the·Erlang·nodes·that·<code·class="inline">epmd</code> | 479 | <p>Returns·the·names·and·associated·port·numbers·of·the·Erlang·nodes·that·<code·class="inline">epmd</code> |
| 480 | registered·at·the·specified·host.</p><p>Similar·to·<code·class="inline">epmd·-names</code>,·see·<a·href="../../../../erts-15.2.3/doc/html/epmd_cmd.html"><code·class="inline">erts:epmd</code></a>.</p><p>Returns·<code·class="inline">{error,·address}</code>·if·<code·class="inline">epmd</code>·is·not·operational.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">(arne@dunn)1>·</span><span·class="nc">net_adm</span><span·class="p">:</span><span·class="nf">names</span><span·class="p"·data-group-id=" | 480 | registered·at·the·specified·host.</p><p>Similar·to·<code·class="inline">epmd·-names</code>,·see·<a·href="../../../../erts-15.2.3/doc/html/epmd_cmd.html"><code·class="inline">erts:epmd</code></a>.</p><p>Returns·<code·class="inline">{error,·address}</code>·if·<code·class="inline">epmd</code>·is·not·operational.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">(arne@dunn)1>·</span><span·class="nc">net_adm</span><span·class="p">:</span><span·class="nf">names</span><span·class="p"·data-group-id="0365249238-1">(</span><span·class="p"·data-group-id="0365249238-1">)</span><span·class="p">.</span><span·class="w"> |
| 481 | </span><span·class="p"·data-group-id=" | 481 | </span><span·class="p"·data-group-id="0365249238-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="0365249238-3">[</span><span·class="p"·data-group-id="0365249238-4">{</span><span·class="s">"arne"</span><span·class="p">,</span><span·class="mi[·...·truncated·by·diffoscope;·len:·161,·SHA:·617d20e4c8c16347380a4b011373360df9f68bb962ba17696ff1c06767555cfd·...·]-2">}</span></code></pre> |
| 482 | ··</section> | 482 | ··</section> |
| 483 | </section> | 483 | </section> |
| 484 | <section·class="detail"·id="ping/1"> | 484 | <section·class="detail"·id="ping/1"> |
| 485 | ··<div·class="detail-header"> | 485 | ··<div·class="detail-header"> |
| 486 | ····<a·href="#ping/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 486 | ····<a·href="#ping/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 487 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 487 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 128 | ····<section·id="moduledoc"> | 128 | ····<section·id="moduledoc"> |
| 129 | <p>Erlang·networking·kernel.</p><p>The·net·kernel·is·a·system·process,·registered·as·<code·class="inline">net_kernel</code>,·which·must·be | 129 | <p>Erlang·networking·kernel.</p><p>The·net·kernel·is·a·system·process,·registered·as·<code·class="inline">net_kernel</code>,·which·must·be |
| 130 | operational·for·distributed·Erlang·to·work.·The·purpose·of·this·process·is·to | 130 | operational·for·distributed·Erlang·to·work.·The·purpose·of·this·process·is·to |
| 131 | implement·parts·of·the·BIFs·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#spawn/4"><code·class="inline">spawn/4</code></a>·and | 131 | implement·parts·of·the·BIFs·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#spawn/4"><code·class="inline">spawn/4</code></a>·and |
| 132 | <a·href="../../../../erts-15.2.3/doc/html/erlang.html#spawn_link/4"><code·class="inline">spawn_link/4</code></a>,·and·to·provide·monitoring·of·the·network.</p><p>An·Erlang·node·is·started·using·command-line·flag·<code·class="inline">-name</code>·or·<code·class="inline">-sname</code>:</p><pre><code·class="text">$·erl·-sname·foobar</code></pre><p>It·is·also·possible·to·call·<a·href="#start/2"><code·class="inline">net_kernel:start(foobar,·#{})</code></a> | 132 | <a·href="../../../../erts-15.2.3/doc/html/erlang.html#spawn_link/4"><code·class="inline">spawn_link/4</code></a>,·and·to·provide·monitoring·of·the·network.</p><p>An·Erlang·node·is·started·using·command-line·flag·<code·class="inline">-name</code>·or·<code·class="inline">-sname</code>:</p><pre><code·class="text">$·erl·-sname·foobar</code></pre><p>It·is·also·possible·to·call·<a·href="#start/2"><code·class="inline">net_kernel:start(foobar,·#{})</code></a> |
| 133 | directly·from·the·normal·Erlang·shell·prompt:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">net_kernel</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 133 | directly·from·the·normal·Erlang·shell·prompt:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">net_kernel</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="9371402161-1">(</span><span·class="ss">foobar</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9371402161-2">#{</span><span·class="ss">name_domain</span><span·class="w">·</span><span·class="p">=></span><span·class="w"[·...·truncated·by·diffoscope;·len:·137,·SHA:·98b4dc3936ec77c850223c0530a66e485884641e37992297a92029359315fdce·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 134 | </span><span·class="p"·data-group-id=" | 134 | </span><span·class="p"·data-group-id="9371402161-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.64</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="9371402161-3">}</span><span·class="w"> |
| 135 | </span><span·class="p"·data-group-id=" | 135 | </span><span·class="p"·data-group-id="9371402161-4">(</span><span·class="ss">foobar@gringotts</span><span·class="p"·data-group-id="9371402161-4">)</span><span·class="mi">2</span><span·class="o">></span></code></pre><p>If·the·node·is·started·with·command-line·flag·<code·class="inline">-sname</code>,·the·node·name·is |
| 136 | <code·class="inline">foobar@Host</code>,·where·<code·class="inline">Host</code>·is·the·short·name·of·the·host·(not·the·fully | 136 | <code·class="inline">foobar@Host</code>,·where·<code·class="inline">Host</code>·is·the·short·name·of·the·host·(not·the·fully |
| 137 | qualified·domain·name).·If·started·with·flag·<code·class="inline">-name</code>,·the·node·name·is | 137 | qualified·domain·name).·If·started·with·flag·<code·class="inline">-name</code>,·the·node·name·is |
| 138 | <code·class="inline">foobar@Host</code>,·where·<code·class="inline">Host</code>·is·the·fully·qualified·domain·name.·For·more | 138 | <code·class="inline">foobar@Host</code>,·where·<code·class="inline">Host</code>·is·the·fully·qualified·domain·name.·For·more |
| 139 | information,·see·<a·href="../../../../erts-15.2.3/doc/html/erl_cmd.html"><code·class="inline">erl</code></a>.</p><p>Normally,·connections·are·established·automatically·when·another·node·is | 139 | information,·see·<a·href="../../../../erts-15.2.3/doc/html/erl_cmd.html"><code·class="inline">erl</code></a>.</p><p>Normally,·connections·are·established·automatically·when·another·node·is |
| 140 | referenced.·This·functionality·can·be·disabled·by·setting·Kernel·configuration | 140 | referenced.·This·functionality·can·be·disabled·by·setting·Kernel·configuration |
| 141 | parameter·<code·class="inline">dist_auto_connect</code>·to·<code·class="inline">never</code>,·see·<a·href="kernel_app.html"><code·class="inline">kernel(6)</code></a>.·In | 141 | parameter·<code·class="inline">dist_auto_connect</code>·to·<code·class="inline">never</code>,·see·<a·href="kernel_app.html"><code·class="inline">kernel(6)</code></a>.·In |
| 142 | this·case,·connections·must·be·established·explicitly·by·calling | 142 | this·case,·connections·must·be·established·explicitly·by·calling |
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| 646 | node·through·the·newly·established·connection.</li><li><code·class="inline">nodedown</code>·messages·are·delivered·after·all·the·signals·from·the·remote·node | 646 | node·through·the·newly·established·connection.</li><li><code·class="inline">nodedown</code>·messages·are·delivered·after·all·the·signals·from·the·remote·node |
| 647 | over·the·connection·have·been·delivered.</li><li><code·class="inline">nodeup</code>·messages·are·delivered·after·the·corresponding·node·appears·in | 647 | over·the·connection·have·been·delivered.</li><li><code·class="inline">nodeup</code>·messages·are·delivered·after·the·corresponding·node·appears·in |
| 648 | results·from·<code·class="inline">erlang:nodes()</code>.</li><li><code·class="inline">nodedown</code>·messages·are·delivered·after·the·corresponding·node·has·disappeared | 648 | results·from·<code·class="inline">erlang:nodes()</code>.</li><li><code·class="inline">nodedown</code>·messages·are·delivered·after·the·corresponding·node·has·disappeared |
| 649 | in·results·from·<code·class="inline">erlang:nodes()</code>.</li><li>As·of·OTP·23.0,·a·<code·class="inline">nodedown</code>·message·for·a·connection·being·taken·down·will·be | 649 | in·results·from·<code·class="inline">erlang:nodes()</code>.</li><li>As·of·OTP·23.0,·a·<code·class="inline">nodedown</code>·message·for·a·connection·being·taken·down·will·be |
| 650 | delivered·before·a·<code·class="inline">nodeup</code>·message·due·to·a·new·connection·to·the·same·node. | 650 | delivered·before·a·<code·class="inline">nodeup</code>·message·due·to·a·new·connection·to·the·same·node. |
| 651 | Prior·to·OTP·23.0,·this·was·not·guaranteed·to·be·the·case.</li></ul><p>The·format·of·the·node·status·change·messages·depends·on·<code·class="inline">Options</code>.·If·<code·class="inline">Options</code> | 651 | Prior·to·OTP·23.0,·this·was·not·guaranteed·to·be·the·case.</li></ul><p>The·format·of·the·node·status·change·messages·depends·on·<code·class="inline">Options</code>.·If·<code·class="inline">Options</code> |
| 652 | is·the·empty·list·or·if·<a·href="#monitor_nodes/1"><code·class="inline">net_kernel:monitor_nodes/1</code></a>·is·called,·the·format·is·as | 652 | is·the·empty·list·or·if·<a·href="#monitor_nodes/1"><code·class="inline">net_kernel:monitor_nodes/1</code></a>·is·called,·the·format·is·as |
| 653 | follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 653 | follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8083551935-1">{</span><span·class="ss">nodeup</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Node</span><span·class="p"·data-group-id="8083551935-1">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><spa[·...·truncated·by·diffoscope;·len:·197,·SHA:·310183050b04d108e84514ba7176fe8a89b560904d43f75b41af4b01204d037c·...·]-2">}</span><span·class="w"> |
| 654 | ··</span><span·class="n">Node</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">node</span><span·class="p"·data-group-id=" | 654 | ··</span><span·class="n">Node</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">node</span><span·class="p"·data-group-id="8083551935-3">(</span><span·class="p"·data-group-id="8083551935-3">)</span></code></pre><p>When·<code·class="inline">Options</code>·is·the·empty·map·or·empty·list,·the·caller·will·only·subscribe |
| 655 | for·status·change·messages·for·visible·nodes.·That·is,·only·nodes·that·appear·in | 655 | for·status·change·messages·for·visible·nodes.·That·is,·only·nodes·that·appear·in |
| 656 | the·result·of·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#nodes/0"><code·class="inline">erlang:nodes/0</code></a>.</p><p>If·<code·class="inline">Options</code>·equals·anything·other·than·the·empty·list,·the·format·of·the·status | 656 | the·result·of·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#nodes/0"><code·class="inline">erlang:nodes/0</code></a>.</p><p>If·<code·class="inline">Options</code>·equals·anything·other·than·the·empty·list,·the·format·of·the·status |
| 657 | change·messages·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8 | 657 | change·messages·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="9849076390-1">{</span><span·class="ss">nodeup</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Node</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Info</span><span·class="p"·data-group-id="9849076390-1">}</span><[·...·truncated·by·diffoscope;·len:·347,·SHA:·2d7f58ec2a84320acf2de791372af41b1454ce9581818acc604c7f416ccd255a·...·]-2">}</span><span·class="w"> |
| 658 | ··</span><span·class="n">Node</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">node</span><span·class="p"·data-group-id="8 | 658 | ··</span><span·class="n">Node</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">node</span><span·class="p"·data-group-id="9849076390-3">(</span><span·class="p"·data-group-id="9849076390-3">)</span><span·class="w"> |
| 659 | ··</span><span·class="n">Info</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="8 | 659 | ··</span><span·class="n">Info</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="9849076390-4">#{</span><span·class="n">Tag</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="n">Val</span><span·class="p"·data-group-id="9849076390-4">}</span><span·class="w">·</span><span·class="p">|</span><spa[·...·truncated·by·diffoscope;·len:·320,·SHA:·c979aefe83a0f2c31a0b75689ada64f31800b124e7eda40a63b99d010302148b·...·]-5">]</span></code></pre><p><code·class="inline">Info</code>·is·either·a·map·or·a·list·of·2-tuples.·Its·content·depends·on·<code·class="inline">Options</code>. |
| 660 | If·<code·class="inline">Options</code>·is·a·map,·<code·class="inline">Info</code>·will·also·be·a·map.·If·<code·class="inline">Options</code>·is·a·list,·<code·class="inline">Info</code> | 660 | If·<code·class="inline">Options</code>·is·a·map,·<code·class="inline">Info</code>·will·also·be·a·map.·If·<code·class="inline">Options</code>·is·a·list,·<code·class="inline">Info</code> |
| 661 | will·also·be·a·list.</p><p>When·<code·class="inline">Options</code>·is·a·map,·currently·the·following·associations·are·allowed:</p><ul><li><p><strong><code·class="inline">connection_id·=>·boolean()</code></strong>·-·If·the·value·of·the·association·equals | 661 | will·also·be·a·list.</p><p>When·<code·class="inline">Options</code>·is·a·map,·currently·the·following·associations·are·allowed:</p><ul><li><p><strong><code·class="inline">connection_id·=>·boolean()</code></strong>·-·If·the·value·of·the·association·equals |
| 662 | <code·class="inline">true</code>,·a·<code·class="inline">connection_id·=>·ConnectionId</code>·association·will·be·included·in·the | 662 | <code·class="inline">true</code>,·a·<code·class="inline">connection_id·=>·ConnectionId</code>·association·will·be·included·in·the |
| 663 | <code·class="inline">Info</code>·map·where·<code·class="inline">ConnectionId</code>·is·the·connection·identifier·of·the·connection | 663 | <code·class="inline">Info</code>·map·where·<code·class="inline">ConnectionId</code>·is·the·connection·identifier·of·the·connection |
| 664 | coming·up·or·going·down.·For·more·info·about·this·connection·identifier·see | 664 | coming·up·or·going·down.·For·more·info·about·this·connection·identifier·see |
| 665 | the·documentation·of·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#connection_id">erlang:nodes/2</a>.</p></li><li><p><strong><code·class="inline">node_type·=>·NodeType</code></strong>·-·Valid·values·for·<code·class="inline">NodeType</code>:</p><ul><li><p><strong><code·class="inline">visible</code></strong>·-·Subscribe·to·node·status·change·messages·for·visible·nodes | 665 | the·documentation·of·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#connection_id">erlang:nodes/2</a>.</p></li><li><p><strong><code·class="inline">node_type·=>·NodeType</code></strong>·-·Valid·values·for·<code·class="inline">NodeType</code>:</p><ul><li><p><strong><code·class="inline">visible</code></strong>·-·Subscribe·to·node·status·change·messages·for·visible·nodes |
| 666 | only.·The·association·<code·class="inline">node_type·=>·visible</code>·will·be·included·in·the·<code·class="inline">Info</code> | 666 | only.·The·association·<code·class="inline">node_type·=>·visible</code>·will·be·included·in·the·<code·class="inline">Info</code> |
| Offset 686, 31 lines modified | Offset 686, 31 lines modified | ||
| 686 | only.·The·tuple·<code·class="inline">{node_type,·hidden}</code>·will·be·included·in·the·<code·class="inline">Info</code>·list.</p></li><li><p><strong><code·class="inline">all</code></strong>·-·Subscribe·to·node·status·change·messages·for·both·visible·and | 686 | only.·The·tuple·<code·class="inline">{node_type,·hidden}</code>·will·be·included·in·the·<code·class="inline">Info</code>·list.</p></li><li><p><strong><code·class="inline">all</code></strong>·-·Subscribe·to·node·status·change·messages·for·both·visible·and |
| 687 | hidden·nodes.·The·tuple·<code·class="inline">{node_type,·visible·|·hidden}</code>·will·be·included·in | 687 | hidden·nodes.·The·tuple·<code·class="inline">{node_type,·visible·|·hidden}</code>·will·be·included·in |
| 688 | the·<code·class="inline">Info</code>·list.</p></li></ul><p>If·no·<code·class="inline">{node_type,·NodeType}</code>·option·has·been·given.·The·caller·will·subscribe | 688 | the·<code·class="inline">Info</code>·list.</p></li></ul><p>If·no·<code·class="inline">{node_type,·NodeType}</code>·option·has·been·given.·The·caller·will·subscribe |
| 689 | for·status·change·messages·for·visible·nodes·only,·but·<em>no</em> | 689 | for·status·change·messages·for·visible·nodes·only,·but·<em>no</em> |
| 690 | <code·class="inline">{node_type,·visible}</code>·tuple·will·be·included·in·the·<code·class="inline">Info</code>·list.</p></li><li><p><strong><code·class="inline">nodedown_reason</code></strong>·-·The·tuple·<code·class="inline">{nodedown_reason,·Reason}</code>·will·be·included | 690 | <code·class="inline">{node_type,·visible}</code>·tuple·will·be·included·in·the·<code·class="inline">Info</code>·list.</p></li><li><p><strong><code·class="inline">nodedown_reason</code></strong>·-·The·tuple·<code·class="inline">{nodedown_reason,·Reason}</code>·will·be·included |
| 691 | in·the·<code·class="inline">Info</code>·list·for·<code·class="inline">nodedown</code>·messages.</p><p>See·the·documentation·of·the | 691 | in·the·<code·class="inline">Info</code>·list·for·<code·class="inline">nodedown</code>·messages.</p><p>See·the·documentation·of·the |
| 692 | <a·href="net_kernel.html#nodedown_reasons"><code·class="inline">nodedown_reason·=>·boolean()</code></a>·association | 692 | <a·href="net_kernel.html#nodedown_reasons"><code·class="inline">nodedown_reason·=>·boolean()</code></a>·association |
| 693 | above·for·information·about·possible·<code·class="inline">Reason</code>·values.</p></li></ul><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">(a@localhost)1>·</span><span·class="nc">net_kernel</span><span·class="p">:</span><span·class="nf">monitor_nodes</span><span·class="p"·data-group-id=" | 693 | above·for·information·about·possible·<code·class="inline">Reason</code>·values.</p></li></ul><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">(a@localhost)1>·</span><span·class="nc">net_kernel</span><span·class="p">:</span><span·class="nf">monitor_nodes</span><span·class="p"·data-group-id="1194767439-1">(</span><span·class="ss">true</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1194767439-2">#{</span><span·class="ss">connection_id</span><span·class="p">=></span><span·class="ss">true</span><span·class[·...·truncated·by·diffoscope;·len:·362,·SHA:·fbd18c93bc7f6165920fa63042e18d93d20ea5c22897548c6f7fc46a8215c821·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 694 | </span><span·class="nf">ok</span><span·class="w"> | 694 | </span><span·class="nf">ok</span><span·class="w"> |
| 695 | </span><span·class="p"·data-group-id=" | 695 | </span><span·class="p"·data-group-id="1194767439-3">(</span><span·class="ss">a@localhost</span><span·class="p"·data-group-id="1194767439-3">)</span><span·class="mi">2</span><span·class="o">></span><span·class="w">·</span><span·class="nf">flush</span><span·class="p"·data-group-id="1194767439[·...·truncated·by·diffoscope;·len:·53,·SHA:·2f90e2971f1447a5cdf4a8a0f12f84e17323906ee27fcf3b6aef51c9a4e3a896·...·]-4">)</span><span·class="p">.</span><span·class="w"> |
| 696 | </span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="p"·data-group-id=" | 696 | </span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="p"·data-group-id="1194767439-5">{</span><span·class="ss">nodeup</span><span·class="p">,</span><span·class="ss">b@localhost</span><span·class="p">,</span><span·class="w"> |
| 697 | ··················</span><span·class="p"·data-group-id=" | 697 | ··················</span><span·class="p"·data-group-id="1194767439-6">#{</span><span·class="ss">connection_id</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">3067552</span><span·class="p">,</span><span·class="ss">node_type</span><span·class="w">·</span><span·cl[·...·truncated·by·diffoscope;·len:·169,·SHA:·2854e3741d1c237c9fd85780ebf8cc29c364b789d415b0440589bfe2bd6767e0·...·]-5">}</span><span·class="w"> |
| 698 | </span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="p"·data-group-id=" | 698 | </span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="p"·data-group-id="1194767439-7">{</span><span·class="ss">nodeup</span><span·class="p">,</span><span·class="ss">c@localhost</span><span·class="p">,</span><span·class="w"> |
| 699 | ··················</span><span·class="p"·data-group-id=" | 699 | ··················</span><span·class="p"·data-group-id="1194767439-8">#{</span><span·class="ss">connection_id</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">13892107</span><span·class="p">,</span><span·class="ss">node_type</span><span·class="w">·</span><span·c[·...·truncated·by·diffoscope;·len:·169,·SHA:·4cd3a18f08618bea33dcdb32b23281d8c4fb7c143f0f25a215aa7eaa59353e5a·...·]-7">}</span><span·class="w"> |
| 700 | </span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="p"·data-group-id=" | 700 | </span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="p"·data-group-id="1194767439-9">{</span><span·class="ss">nodedown</span><span·class="p">,</span><span·class="ss">b@localhost</span><span·class="p">,</span><span·class="w"> |
| 701 | ····················</span><span·class="p"·data-group-id=" | 701 | ····················</span><span·class="p"·data-group-id="1194767439-10">#{</span><span·class="ss">connection_id</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">3067552</span><span·class="p">,</span><span·class="ss">node_type</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">visible</span><span·class="p">,</span><span·class="w"> |
| 702 | ······················</span><span·class="ss">nodedown_reason</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">connection_closed</span><span·class="p"·data-group-id=" | 702 | ······················</span><span·class="ss">nodedown_reason</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">connection_closed</span><span·class="p"·data-group-id="1194767439-10">}</span><span·class="p"·data-group-id="1194767439-9">}</span><span·class="w"> |
| 703 | </span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="p"·data-group-id=" | 703 | </span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="p"·data-group-id="1194767439-11">{</span><span·class="ss">nodedown</span><span·class="p">,</span><span·class="ss">c@localhost</span><span·class="p">,</span><span·class="w"> |
| 704 | ····················</span><span·class="p"·data-group-id=" | 704 | ····················</span><span·class="p"·data-group-id="1194767439-12">#{</span><span·class="ss">connection_id</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">13892107</span><span·class="p">,</span><span·class="ss">node_type</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">hidden</span><span·class="p">,</span><span·class="w"> |
| 705 | ······················</span><span·class="ss">nodedown_reason</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">net_tick_timeout</span><span·class="p"·data-group-id=" | 705 | ······················</span><span·class="ss">nodedown_reason</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">net_tick_timeout</span><span·class="p"·data-group-id="1194767439-12">}</span><span·class="p"·data-group-id="1194767439-11">}</span><span·class="w"> |
| 706 | </span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="p"·data-group-id=" | 706 | </span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="p"·data-group-id="1194767439-13">{</span><span·class="ss">nodeup</span><span·class="p">,</span><span·class="ss">b@localhost</span><span·class="p">,</span><span·class="w"> |
| 707 | ··················</span><span·class="p"·data-group-id=" | 707 | ··················</span><span·class="p"·data-group-id="1194767439-14">#{</span><span·class="ss">connection_id</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">3067553</span><span·class="p">,</span><span·class="ss">node_type</span><span·class="w">·</span><span·c[·...·truncated·by·diffoscope;·len:·171,·SHA:·2deefe1afe1f36411837e290e88325bfc5e0eb9785859c030b080566bf3691c2·...·]-13">}</span><span·class="w"> |
| 708 | </span><span·class="nf">ok</span><span·class="w"> | 708 | </span><span·class="nf">ok</span><span·class="w"> |
| 709 | </span><span·class="p"·data-group-id=" | 709 | </span><span·class="p"·data-group-id="1194767439-15">(</span><span·class="ss">a@localhost</span><span·class="p"·data-group-id="1194767439-15">)</span><span·class="mi">3</span><span·class="o">></span></code></pre> |
| 710 | ··</section> | 710 | ··</section> |
| 711 | </section> | 711 | </section> |
| 712 | <section·class="detail"·id="set_net_ticktime/1"> | 712 | <section·class="detail"·id="set_net_ticktime/1"> |
| 713 | ··<div·class="detail-header"> | 713 | ··<div·class="detail-header"> |
| 714 | ····<a·href="#set_net_ticktime/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 714 | ····<a·href="#set_net_ticktime/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 715 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 715 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 4073, 20 lines modified | Offset 4073, 20 lines modified | ||
| 4073 | will·make·repeated·attempts·to·open·the·disk·log·fail·every·time.</p><p>Own·Id:·OTP-5558·Aux·Id:·seq9823</p></li><li><p>Previously·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#unlink/1"><code·class="inline">unlink/1</code></a>·and·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#demonitor/2"><code·class="inline">erlang:demonitor/2</code></a>·behaved | 4073 | will·make·repeated·attempts·to·open·the·disk·log·fail·every·time.</p><p>Own·Id:·OTP-5558·Aux·Id:·seq9823</p></li><li><p>Previously·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#unlink/1"><code·class="inline">unlink/1</code></a>·and·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#demonitor/2"><code·class="inline">erlang:demonitor/2</code></a>·behaved |
| 4074 | completely·asynchronous.·This·had·one·undesirable·effect,·though.·You·could | 4074 | completely·asynchronous.·This·had·one·undesirable·effect,·though.·You·could |
| 4075 | never·know·when·you·were·guaranteed·<em>not</em>·to·be·affected·by·a·link·that·you | 4075 | never·know·when·you·were·guaranteed·<em>not</em>·to·be·affected·by·a·link·that·you |
| 4076 | had·unlinked·or·a·monitor·that·you·had·demonitored.</p><p>The·new·behavior·of·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#unlink/1"><code·class="inline">unlink/1</code></a>·and·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#demonitor/2"><code·class="inline">erlang:demonitor/2</code></a>·can·be | 4076 | had·unlinked·or·a·monitor·that·you·had·demonitored.</p><p>The·new·behavior·of·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#unlink/1"><code·class="inline">unlink/1</code></a>·and·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#demonitor/2"><code·class="inline">erlang:demonitor/2</code></a>·can·be |
| 4077 | viewed·as·two·operations·performed·atomically.·Asynchronously·send·an·unlink | 4077 | viewed·as·two·operations·performed·atomically.·Asynchronously·send·an·unlink |
| 4078 | signal·or·a·demonitor·signal,·and·ignore·any·future·results·of·the·link·or | 4078 | signal·or·a·demonitor·signal,·and·ignore·any·future·results·of·the·link·or |
| 4079 | monitor.</p><p><em>NOTE</em>:·This·change·can·cause·some·obscure·code·to·fail·which·previously·did | 4079 | monitor.</p><p><em>NOTE</em>:·This·change·can·cause·some·obscure·code·to·fail·which·previously·did |
| 4080 | not.·For·example,·the·following·code·might·hang:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">············</span><span·class="n">Mon</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">monitor</span><span·class="p"·data-group-id=" | 4080 | not.·For·example,·the·following·code·might·hang:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">············</span><span·class="n">Mon</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">monitor</span><span·class="p"·data-group-id="1737657004-1">(</span><span·class="ss">process</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pid</span><span·class="p"·data-group-id="1737657004-1">)</span><span·class="p">,</span><span·class="w"> |
| 4081 | ············</span><span·class="c1">%%·...</span><span·class="w"> | 4081 | ············</span><span·class="c1">%%·...</span><span·class="w"> |
| 4082 | ············</span><span·class="nf">exit</span><span·class="p"·data-group-id=" | 4082 | ············</span><span·class="nf">exit</span><span·class="p"·data-group-id="1737657004-2">(</span><span·class="n">Pid</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">bang</span><span·class="p"·data-group-id="1737657004-2">)</span><span·class="p">,</span><span·class="w"> |
| 4083 | ············</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">demonitor</span><span·class="p"·data-group-id=" | 4083 | ············</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">demonitor</span><span·class="p"·data-group-id="1737657004-3">(</span><span·class="n">Mon</span><span·class="p"·data-group-id="1737657004-3">)</span><span·class="p">,</span><span·class="w"> |
| 4084 | ············</span><span·class="k">receive</span><span·class="w"> | 4084 | ············</span><span·class="k">receive</span><span·class="w"> |
| 4085 | ················</span><span·class="p"·data-group-id=" | 4085 | ················</span><span·class="p"·data-group-id="1737657004-4">{</span><span·class="ss">'DOWN'</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Mon</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">process</span><span·class="p">,</span><span·class="w">·</[·...·truncated·by·diffoscope;·len:·144,·SHA:·f12cfe5a44a3c2e413cde5c2cc55f2535cd3f0707555327ed731cf67a8aa82b1·...·]-4">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="w"> |
| 4086 | ············</span><span·class="c1">%%·We·were·previously·guaranteed·to·get·a·down·message</span><span·class="w"> | 4086 | ············</span><span·class="c1">%%·We·were·previously·guaranteed·to·get·a·down·message</span><span·class="w"> |
| 4087 | ············</span><span·class="c1">%%·(since·we·exited·the·process·ourself),·so·we·could</span><span·class="w"> | 4087 | ············</span><span·class="c1">%%·(since·we·exited·the·process·ourself),·so·we·could</span><span·class="w"> |
| 4088 | ············</span><span·class="c1">%%·in·this·case·leave·out:</span><span·class="w"> | 4088 | ············</span><span·class="c1">%%·in·this·case·leave·out:</span><span·class="w"> |
| 4089 | ············</span><span·class="c1">%%·after·0·->·ok</span><span·class="w"> | 4089 | ············</span><span·class="c1">%%·after·0·->·ok</span><span·class="w"> |
| 4090 | ············</span><span·class="k">end</span><span·class="p">,</span></code></pre><p>*<strong>·POTENTIAL·INCOMPATIBILITY·*</strong></p><p>Own·Id:·OTP-5772</p></li><li><p>The·behavior·when·an·application·fails·to·start·and·possibly·causes·the | 4090 | ············</span><span·class="k">end</span><span·class="p">,</span></code></pre><p>*<strong>·POTENTIAL·INCOMPATIBILITY·*</strong></p><p>Own·Id:·OTP-5772</p></li><li><p>The·behavior·when·an·application·fails·to·start·and·possibly·causes·the |
| 4091 | runtime·system·to·halt·has·been·cleaned·up,·including·fixing·some·minor·bugs.</p><p><code·class="inline">application_controller</code>·should·now·always·terminate·with·a·non-nested·string, | 4091 | runtime·system·to·halt·has·been·cleaned·up,·including·fixing·some·minor·bugs.</p><p><code·class="inline">application_controller</code>·should·now·always·terminate·with·a·non-nested·string, |
| 4092 | meaning·the·slogan·in·an·<code·class="inline">erl_crash.dump</code>·should·always·be·easy·to·read.</p><p><code·class="inline">init</code>·now·makes·sure·that·the·slogan·passed·to·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#halt/1"><code·class="inline">erlang:halt/1</code></a>·does·not | 4092 | meaning·the·slogan·in·an·<code·class="inline">erl_crash.dump</code>·should·always·be·easy·to·read.</p><p><code·class="inline">init</code>·now·makes·sure·that·the·slogan·passed·to·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#halt/1"><code·class="inline">erlang:halt/1</code></a>·does·not |
| Offset 640, 21 lines modified | Offset 640, 21 lines modified | ||
| 640 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·cmd(Command,·Options)·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>()·when·Command·::·<a·href="#t:os_command/0">os_command</a>(),·Options·::·<a·href="#t:os_command_opts/0">os_command_opts</a>().</pre> | 640 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·cmd(Command,·Options)·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>()·when·Command·::·<a·href="#t:os_command/0">os_command</a>(),·Options·::·<a·href="#t:os_command_opts/0">os_command_opts</a>().</pre> |
| 641 | ······</div> | 641 | ······</div> |
| 642 | <p>Executes·<code·class="inline">Command</code>·in·a·command·shell·of·the·target·OS,·captures·the·standard | 642 | <p>Executes·<code·class="inline">Command</code>·in·a·command·shell·of·the·target·OS,·captures·the·standard |
| 643 | output·and·standard·error·of·the·command,·and·returns·this·result·as·a·string.</p><p>The·command·shell·can·be·set·using·the | 643 | output·and·standard·error·of·the·command,·and·returns·this·result·as·a·string.</p><p>The·command·shell·can·be·set·using·the |
| 644 | <a·href="kernel_app.html#os_cmd_shell">kernel·configuration·parameter</a>,·by·default·the | 644 | <a·href="kernel_app.html#os_cmd_shell">kernel·configuration·parameter</a>,·by·default·the |
| 645 | shell·is·detected·upon·system·startup.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">LsOut</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">os</span><span·class="p">:</span><span·class="nf">cmd</span><span·class="p"·data-group-id=" | 645 | shell·is·detected·upon·system·startup.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">LsOut</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">os</span><span·class="p">:</span><span·class="nf">cmd</span><span·class="p"·data-group-id="8609343764-1">(</span><span·class="s">"ls"</span><span·class="p"·data-group-id="8609343764-1">)</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%·on·unix·platform</span><span·class="w"> |
| 646 | </span><span·class="n">DirOut</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">os</span><span·class="p">:</span><span·class="nf">cmd</span><span·class="p"·data-group-id=" | 646 | </span><span·class="n">DirOut</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">os</span><span·class="p">:</span><span·class="nf">cmd</span><span·class="p"·data-group-id="8609343764-2">(</span><span·class="s">"dir"</span><span·class="p"·data-group-id="8609343764-2">)</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%·on·Win32·platform</span></code></pre><p>Notice·that·in·some·cases,·standard·output·of·a·command·when·called·from·another |
| 647 | program·can·differ,·compared·with·the·standard·output·of·the·command·when·called | 647 | program·can·differ,·compared·with·the·standard·output·of·the·command·when·called |
| 648 | directly·from·an·OS·command·shell.</p><p>The·possible·options·are:</p><ul><li><p><strong><code·class="inline">max_size</code></strong>·-·The·maximum·size·of·the·data·returned·by·the·<code·class="inline">os:cmd</code>·call. | 648 | directly·from·an·OS·command·shell.</p><p>The·possible·options·are:</p><ul><li><p><strong><code·class="inline">max_size</code></strong>·-·The·maximum·size·of·the·data·returned·by·the·<code·class="inline">os:cmd</code>·call. |
| 649 | This·option·is·a·safety·feature·that·should·be·used·when·the·command·executed | 649 | This·option·is·a·safety·feature·that·should·be·used·when·the·command·executed |
| 650 | can·return·a·very·large,·possibly·infinite,·result.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">os</span><span·class="p">:</span><span·class="nf">cmd</span><span·class="p"·data-group-id=" | 650 | can·return·a·very·large,·possibly·infinite,·result.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">os</span><span·class="p">:</span><span·class="nf">cmd</span><span·class="p"·data-group-id="3457482539-1">(</span><span·class="s">"cat·/dev/zero"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3457482539-2">#{</span><span·class="w">·</span><span·class="ss">max_size</span><span·class="w">·</span><spa[·...·truncated·by·diffoscope;·len:·192,·SHA:·aed907f7c237e003218b469f88fbd204e2881031b966b0a54afa9ecafe14db5b·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 651 | </span><span·class="p"·data-group-id=" | 651 | </span><span·class="p"·data-group-id="3457482539-3">[</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="[·...·truncated·by·diffoscope;·len:·763,·SHA:·843e15de5a2893bb1e4af8c24cedd096200a0f7fbdc53724f45aebad88313640·...·]-3">]</span></code></pre></li></ul> |
| 652 | ··</section> | 652 | ··</section> |
| 653 | </section> | 653 | </section> |
| 654 | <section·class="detail"·id="env/0"> | 654 | <section·class="detail"·id="env/0"> |
| 655 | ··<div·class="detail-header"> | 655 | ··<div·class="detail-header"> |
| 656 | ····<a·href="#env/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 656 | ····<a·href="#env/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 657 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 657 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 918 | ······</div> | 918 | ······</div> |
| 919 | <p>Returns·a·performance·counter·that·can·be·used·as·a·very·fast·and·high | 919 | <p>Returns·a·performance·counter·that·can·be·used·as·a·very·fast·and·high |
| 920 | resolution·timestamp.</p><p>This·counter·is·read·directly·from·the·hardware·or·operating·system·with·the | 920 | resolution·timestamp.</p><p>This·counter·is·read·directly·from·the·hardware·or·operating·system·with·the |
| 921 | same·guarantees.·This·means·that·two·consecutive·calls·to·the·function·are·not | 921 | same·guarantees.·This·means·that·two·consecutive·calls·to·the·function·are·not |
| 922 | guaranteed·to·be·monotonic,·though·it·most·likely·will·be.·The·performance | 922 | guaranteed·to·be·monotonic,·though·it·most·likely·will·be.·The·performance |
| 923 | counter·will·be·converted·to·the·resolution·passed·as·an·argument.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">T1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">os</span><span·class="p">:</span><span·class="nf">perf_counter</span><span·class="p"·data-group-id=" | 923 | counter·will·be·converted·to·the·resolution·passed·as·an·argument.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">T1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">os</span><span·class="p">:</span><span·class="nf">perf_counter</span><span·class="p"·data-group-id="3017874626-1">(</span><span·class="mi">1000</span><span·class="p"·data-group-id="3017874626-1">)</span><span·class="p">,</span><span·class="k">receive</span><span·class="w">·</span><span·class="k">after</span><span·class="w">·</span><span·class="mi">10000<[·...·truncated·by·diffoscope;·len:·487,·SHA:·eb5048c41409b51cc1d9e13b8bd9535a3fdca6298087bca676b59adb14c4b2c1·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 924 | </span><span·class="mi">176525861</span><span·class="gp·unselectable"> | 924 | </span><span·class="mi">176525861</span><span·class="gp·unselectable"> |
| 925 | 2>·</span><span·class="n">T2</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="n">T1</span><span·class="p">.</span><span·class="w"> | 925 | 2>·</span><span·class="n">T2</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="n">T1</span><span·class="p">.</span><span·class="w"> |
| 926 | </span><span·class="mi">10004</span></code></pre> | 926 | </span><span·class="mi">10004</span></code></pre> |
| 927 | ··</section> | 927 | ··</section> |
| 928 | </section> | 928 | </section> |
| 929 | <section·class="detail"·id="putenv/2"> | 929 | <section·class="detail"·id="putenv/2"> |
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| 1079 | <p>Returns·the·current·<a·href="../../../../erts-15.2.3/doc/html/time_correction.html#os-system-time">OS·system·time</a> | 1079 | <p>Returns·the·current·<a·href="../../../../erts-15.2.3/doc/html/time_correction.html#os-system-time">OS·system·time</a> |
| 1080 | in·the·same·format·as·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#timestamp/0"><code·class="inline">erlang:timestamp/0</code></a>.</p><p>The·tuple·can·be·used·together·with·function·<a·href="../../../../lib/stdlib-6.2.1/doc/html/calendar.html#now_to_universal_time/1"><code·class="inline">calendar:now_to_universal_time/1</code></a> | 1080 | in·the·same·format·as·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#timestamp/0"><code·class="inline">erlang:timestamp/0</code></a>.</p><p>The·tuple·can·be·used·together·with·function·<a·href="../../../../lib/stdlib-6.2.1/doc/html/calendar.html#now_to_universal_time/1"><code·class="inline">calendar:now_to_universal_time/1</code></a> |
| 1081 | or·<a·href="../../../../lib/stdlib-6.2.1/doc/html/calendar.html#now_to_local_time/1"><code·class="inline">calendar:now_to_local_time/1</code></a>·to·get·calendar·time.·Using·the·calendar·time, | 1081 | or·<a·href="../../../../lib/stdlib-6.2.1/doc/html/calendar.html#now_to_local_time/1"><code·class="inline">calendar:now_to_local_time/1</code></a>·to·get·calendar·time.·Using·the·calendar·time, |
| 1082 | together·with·the·<code·class="inline">MicroSecs</code>·part·of·the·return·tuple·from·this·function, | 1082 | together·with·the·<code·class="inline">MicroSecs</code>·part·of·the·return·tuple·from·this·function, |
| 1083 | allows·you·to·log·time·stamps·in·high·resolution·and·consistent·with·the·time·in | 1083 | allows·you·to·log·time·stamps·in·high·resolution·and·consistent·with·the·time·in |
| 1084 | ·the·rest·of·the·OS.</p><p>Example·of·code·formatting·a·string·in·format·"DD·Mon·YYYY·HH:MM:SS.mmmmmm", | 1084 | ·the·rest·of·the·OS.</p><p>Example·of·code·formatting·a·string·in·format·"DD·Mon·YYYY·HH:MM:SS.mmmmmm", |
| 1085 | where·DD·is·the·day·of·month,·Mon·is·the·textual·month·name,·YYYY·is·the·year, | 1085 | where·DD·is·the·day·of·month,·Mon·is·the·textual·month·name,·YYYY·is·the·year, |
| 1086 | HH:MM:SS·is·the·time,·and·mmmmmm·is·the·microseconds·in·six·positions:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="6 | 1086 | HH:MM:SS·is·the·time,·and·mmmmmm·is·the·microseconds·in·six·positions:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="6470289483-1">(</span><span·class="ss">print_time</span><span·class="p"·data-group-id="6470289483-1">)</span><span·class="p">.</span><span·class="w"> |
| 1087 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="6 | 1087 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="6470289483-2">(</span><span·class="p"·data-group-id="6470289483-3">[</span><span·class="ss">format_utc_timestamp</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data-group-id="6470289483-3">]</span><span·class="p"·data-group-id="64702[·...·truncated·by·diffoscope;·len:·5,·SHA:·866d002dec5efe45cc3c0c9fac80024f5053ed4a00a302652530ffc09062ea68·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 1088 | </span><span·class="nf">format_utc_timestamp</span><span·class="p"·data-group-id="6 | 1088 | </span><span·class="nf">format_utc_timestamp</span><span·class="p"·data-group-id="6470289483-4">(</span><span·class="p"·data-group-id="6470289483-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1089 | ····</span><span·class="n">TS</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6 | 1089 | ····</span><span·class="n">TS</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6470289483-5">{</span><span·class="p">_</span><span·class="p">,</span><span·class="p">_</span><span·class="p">,</span><span·class="n">Micro</span><span·class="p"·data-group-id="6470289483-5">}</span><span·class="w">·</span><span·class="o">=</span><span·clas[·...·truncated·by·diffoscope;·len:·191,·SHA:·56a76e30507cf9b42933f32d4bdc9921ffc08e5499a89bd2be6346b5aa0fdb1d·...·]-6">)</span><span·class="p">,</span><span·class="w"> |
| 1090 | ····</span><span·class="p"·data-group-id="6 | 1090 | ····</span><span·class="p"·data-group-id="6470289483-7">{</span><span·class="p"·data-group-id="6470289483-8">{</span><span·class="n">Year</span><span·class="p">,</span><span·class="n">Month</span><span·class="p">,</span><span·class="n">Day</span><span·class="p"·data-group-id="6470289483-8">}</span>[·...·truncated·by·diffoscope;·len:·304,·SHA:·55a338eafc6a4e91161029e9b06926e751e1e317c7a49f222522fa85f6c934be·...·]-7">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 1091 | </span><span·class="nc">calendar</span><span·class="p">:</span><span·class="nf">now_to_universal_time</span><span·class="p"·data-group-id="6 | 1091 | </span><span·class="nc">calendar</span><span·class="p">:</span><span·class="nf">now_to_universal_time</span><span·class="p"·data-group-id="6470289483-10">(</span><span·class="n">TS</span><span·class="p"·data-group-id="6470289483-10">)</span><span·class="p">,</span><span·class="w"> |
| 1092 | ····</span><span·class="n">Mstr</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">element</span><span·class="p"·data-group-id="6 | 1092 | ····</span><span·class="n">Mstr</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">element</span><span·class="p"·data-group-id="6470289483-11">(</span><span·class="n">Month</span><span·class="p">,</span><span·class="p"·data-group-id="6470289483-12">{</span><span·class="s">"Jan"</span><span·class="p">,</span><span·class="s">"Feb"</span><span·class="p">,</span><span·class="s">"Mar"</span><span·class="p">,</span><span·class="s">"Apr"</span><span·class="p">,</span><span·class="s">"May"</span><span·class="p">,</span><span·class="s">"Jun"</span><span·class="p">,</span><span·class="s">"Jul"</span><span·class="p">,</span><span·class="w"> |
| 1093 | ····</span><span·class="s">"Aug"</span><span·class="p">,</span><span·class="s">"Sep"</span><span·class="p">,</span><span·class="s">"Oct"</span><span·class="p">,</span><span·class="s">"Nov"</span><span·class="p">,</span><span·class="s">"Dec"</span><span·class="p"·data-group-id="6 | 1093 | ····</span><span·class="s">"Aug"</span><span·class="p">,</span><span·class="s">"Sep"</span><span·class="p">,</span><span·class="s">"Oct"</span><span·class="p">,</span><span·class="s">"Nov"</span><span·class="p">,</span><span·class="s">"Dec"</span><span·class="p"·data-group-id="6470289483-12">}</span><span·class="p"·data-group-id="6470289483-11">)</span><span·class="p">,</span><span·class="w"> |
| 1094 | ····</span><span·class="nc">io_lib</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="6 | 1094 | ····</span><span·class="nc">io_lib</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="6470289483-13">(</span><span·class="s">"</span><span·class="si">~2w</span><span·class="s">·</span><span·class="si">~s</span><span·class="s">·</span><span·class="si">~4w</span><span·class="s">·</span><span·class="si">~2w</span><span·class="s">:</span><span·class="si">~2..0w</span><span·class="s">:</span><span·class="si">~2..0w</span><span·class="s">.</span><span·class="si">~6..0w</span><span·class="s">"</span><span·class="p">,</span><span·class="w"> |
| 1095 | ····</span><span·class="p"·data-group-id="6 | 1095 | ····</span><span·class="p"·data-group-id="6470289483-14">[</span><span·class="n">Day</span><span·class="p">,</span><span·class="n">Mstr</span><span·class="p">,</span><span·class="n">Year</span><span·class="p">,</span><span·class="n">Hour</span><span·class="p">,</span><span·class="n">Minute</span><s[·...·truncated·by·diffoscope;·len:·1003,·SHA:·60c5a6de6c461fadf6fc24553b501823773a805d8788b19695a3a3070bdaecd6·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 1096 | </span><span·class="mi">29</span><span·class="w">·</span><span·class="n">Apr</span><span·class="w">·</span><span·class="mi">2009</span><span·class="w">··</span><span·class="mi">9</span><span·class="p">:</span><span·class="mi">55</span><span·class="p">:</span><span·class="mf">30.051711</span></code></pre><p>OS·system·time·can·also·be·retrieved·by·<a·href="#system_time/0"><code·class="inline">system_time/0</code></a>·and·<a·href="#system_time/1"><code·class="inline">system_time/1</code></a>.</p> | 1096 | </span><span·class="mi">29</span><span·class="w">·</span><span·class="n">Apr</span><span·class="w">·</span><span·class="mi">2009</span><span·class="w">··</span><span·class="mi">9</span><span·class="p">:</span><span·class="mi">55</span><span·class="p">:</span><span·class="mf">30.051711</span></code></pre><p>OS·system·time·can·also·be·retrieved·by·<a·href="#system_time/0"><code·class="inline">system_time/0</code></a>·and·<a·href="#system_time/1"><code·class="inline">system_time/1</code></a>.</p> |
| 1097 | ··</section> | 1097 | ··</section> |
| 1098 | </section> | 1098 | </section> |
| 1099 | <section·class="detail"·id="type/0"> | 1099 | <section·class="detail"·id="type/0"> |
| 1100 | ··<div·class="detail-header"> | 1100 | ··<div·class="detail-header"> |
| 1101 | ····<a·href="#type/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1101 | ····<a·href="#type/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 836, 15 lines modified | Offset 836, 15 lines modified | ||
| 836 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·monitor_scope(Scope·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:atom/0">atom</a>())·->·{<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:reference/0">reference</a>(),·#{<a·href="#t:group/0">group</a>()·=>·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:pid/0">pid</a>()]}}.</pre> | 836 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·monitor_scope(Scope·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:atom/0">atom</a>())·->·{<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:reference/0">reference</a>(),·#{<a·href="#t:group/0">group</a>()·=>·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:pid/0">pid</a>()]}}.</pre> |
| 837 | ······</div> | 837 | ······</div> |
| 838 | <p>Subscribes·the·caller·to·updates·from·the·specified·scope.</p><p>Returns·content·of·the·entire·scope·and·a·reference·to·match·the·upcoming | 838 | <p>Subscribes·the·caller·to·updates·from·the·specified·scope.</p><p>Returns·content·of·the·entire·scope·and·a·reference·to·match·the·upcoming |
| 839 | notifications.</p><p>Whenever·any·group·membership·changes,·an·update·message·is·sent·to·the | 839 | notifications.</p><p>Whenever·any·group·membership·changes,·an·update·message·is·sent·to·the |
| 840 | subscriber:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 840 | subscriber:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="9017782314-1">{</span><span·class="n">Ref</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">join</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Group</span><span·class="p">,</span><span·class="w">·</span><span·cl[·...·truncated·by·diffoscope;·len:·781,·SHA:·02157cadbbe6652c8b20e4a5d76a1970672164d2d42ae1fc63e8380c7f4fbe8d·...·]-1">}</span></code></pre> |
| 841 | ··</section> | 841 | ··</section> |
| 842 | </section> | 842 | </section> |
| 843 | <section·class="detail"·id="start/1"> | 843 | <section·class="detail"·id="start/1"> |
| 844 | ··<div·class="detail-header"> | 844 | ··<div·class="detail-header"> |
| 845 | ····<a·href="#start/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 845 | ····<a·href="#start/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 846 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 846 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 1043 | all·the·nodes,·but·the·multicall·is·faster,·as·all·the·requests·are·sent·at·the | 1043 | all·the·nodes,·but·the·multicall·is·faster,·as·all·the·requests·are·sent·at·the |
| 1044 | same·time·and·are·collected·one·by·one·as·they·come·back.</p><p>The·function·evaluates·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#apply/3"><code·class="inline">apply(Module,·Function,·Args)</code></a>·on·the | 1044 | same·time·and·are·collected·one·by·one·as·they·come·back.</p><p>The·function·evaluates·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#apply/3"><code·class="inline">apply(Module,·Function,·Args)</code></a>·on·the |
| 1045 | specified·nodes·and·collects·the·answers.·It·returns·<code·class="inline">{ResL,·BadNodes}</code>,·where | 1045 | specified·nodes·and·collects·the·answers.·It·returns·<code·class="inline">{ResL,·BadNodes}</code>,·where |
| 1046 | <code·class="inline">BadNodes</code>·is·a·list·of·the·nodes·that·do·not·exist,·and·<code·class="inline">ResL</code>·is·a·list·of·the | 1046 | <code·class="inline">BadNodes</code>·is·a·list·of·the·nodes·that·do·not·exist,·and·<code·class="inline">ResL</code>·is·a·list·of·the |
| 1047 | return·values,·or·<code·class="inline">{badrpc,·Reason}</code>·for·failing·calls.·<code·class="inline">Timeout</code>·is·a·time | 1047 | return·values,·or·<code·class="inline">{badrpc,·Reason}</code>·for·failing·calls.·<code·class="inline">Timeout</code>·is·a·time |
| 1048 | (integer)·in·milliseconds,·or·<code·class="inline">infinity</code>.</p><p>The·following·example·is·useful·when·new·object·code·is·to·be·loaded·on·all | 1048 | (integer)·in·milliseconds,·or·<code·class="inline">infinity</code>.</p><p>The·following·example·is·useful·when·new·object·code·is·to·be·loaded·on·all |
| 1049 | nodes·in·the·network,·and·indicates·some·side·effects·that·RPCs·can·produce:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·Find·object·code·for·module·Mod</span><span·class="w"> | 1049 | nodes·in·the·network,·and·indicates·some·side·effects·that·RPCs·can·produce:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·Find·object·code·for·module·Mod</span><span·class="w"> |
| 1050 | </span><span·class="p"·data-group-id=" | 1050 | </span><span·class="p"·data-group-id="5190848139-1">{</span><span·class="n">Mod</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Bin</span><span·class="p">,</span><span·class="w">·</span><span·class="n">File</span><span·class="p"·data-group-id="5190848139-1">}</span><span·[·...·truncated·by·diffoscope;·len:·277,·SHA:·eb4ee95a32b8057d8f579b817a3b8383c3063a46bc850754362492a1504bd034·...·]-2">)</span><span·class="p">,</span><span·class="w"> |
| 1051 | </span><span·class="c1">%%·and·load·it·on·all·nodes·including·this·one</span><span·class="w"> | 1051 | </span><span·class="c1">%%·and·load·it·on·all·nodes·including·this·one</span><span·class="w"> |
| 1052 | </span><span·class="p"·data-group-id=" | 1052 | </span><span·class="p"·data-group-id="5190848139-3">{</span><span·class="n">ResL</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="p"·data-group-id="5190848139-3">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·clas[·...·truncated·by·diffoscope;·len:·608,·SHA:·dd5e3b93c87d792a42caca9b7101646e73435a904e5e77ae8a75d06d2590fddd·...·]-4">)</span><span·class="p">,</span><span·class="w"> |
| 1053 | </span><span·class="c1">%%·and·then·maybe·check·the·ResL·list.</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>If·you·want·the·ability·to·distinguish·between·results,·you·may·want·to | 1053 | </span><span·class="c1">%%·and·then·maybe·check·the·ResL·list.</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>If·you·want·the·ability·to·distinguish·between·results,·you·may·want·to |
| 1054 | consider·using·the·<a·href="erpc.html#multicall/4"><code·class="inline">erpc:multicall()</code></a>·function·from·the | 1054 | consider·using·the·<a·href="erpc.html#multicall/4"><code·class="inline">erpc:multicall()</code></a>·function·from·the |
| 1055 | <code·class="inline">erpc</code>·module·instead.</p></section><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>You·cannot·make·<em>any</em>·assumptions·about·the·process·that·will·perform·the | 1055 | <code·class="inline">erpc</code>·module·instead.</p></section><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>You·cannot·make·<em>any</em>·assumptions·about·the·process·that·will·perform·the |
| 1056 | <code·class="inline">apply()</code>.·It·may·be·the·calling·process·itself,·an·<code·class="inline">rpc</code>·server,·another | 1056 | <code·class="inline">apply()</code>.·It·may·be·the·calling·process·itself,·an·<code·class="inline">rpc</code>·server,·another |
| 1057 | server,·or·a·freshly·spawned·process.</p></section> | 1057 | server,·or·a·freshly·spawned·process.</p></section> |
| 1058 | ··</section> | 1058 | ··</section> |
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| 137 | of·the·trace·output.</p><h2·id="module-trace-messages-sent-to-the-system-tracer"·class="section-heading"> | 137 | of·the·trace·output.</p><h2·id="module-trace-messages-sent-to-the-system-tracer"·class="section-heading"> |
| 138 | ··<a·href="#module-trace-messages-sent-to-the-system-tracer"·class="hover-link"> | 138 | ··<a·href="#module-trace-messages-sent-to-the-system-tracer"·class="hover-link"> |
| 139 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 139 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 140 | ··</a> | 140 | ··</a> |
| 141 | ··<span·class="text">Trace·Messages·Sent·to·the·System·Tracer</span> | 141 | ··<span·class="text">Trace·Messages·Sent·to·the·System·Tracer</span> |
| 142 | </h2> | 142 | </h2> |
| 143 | <p>The·format·of·the·messages·is·one·of·the·following,·depending·on·if·flag | 143 | <p>The·format·of·the·messages·is·one·of·the·following,·depending·on·if·flag |
| 144 | <code·class="inline">timestamp</code>·of·the·trace·token·is·set·to·<code·class="inline">true</code>·or·<code·class="inline">false</code>:</p><pre><code·class="text">{seq_trace,·Label,·SeqTraceInfo,·TimeStamp}</code></pre><p>or</p><pre><code·class="text">{seq_trace,·Label,·SeqTraceInfo}</code></pre><p>Where:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Label</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">int</span><span·class="p"·data-group-id=" | 144 | <code·class="inline">timestamp</code>·of·the·trace·token·is·set·to·<code·class="inline">true</code>·or·<code·class="inline">false</code>:</p><pre><code·class="text">{seq_trace,·Label,·SeqTraceInfo,·TimeStamp}</code></pre><p>or</p><pre><code·class="text">{seq_trace,·Label,·SeqTraceInfo}</code></pre><p>Where:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Label</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">int</span><span·class="p"·data-group-id="1465922431-1">(</span><span·class="p"·data-group-id="1465922431-1">)</span><span·class="w"> |
| 145 | </span><span·class="n">TimeStamp</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 145 | </span><span·class="n">TimeStamp</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="1465922431-2">{</span><span·class="n">Seconds</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Milliseconds</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Microseconds</span><span·class="p"·data-group-id="1465922[·...·truncated·by·diffoscope;·len:·3,·SHA:·0a1f1256f9bac68e806442aa76455bb761af5414855efa23c1b3fd54477c0ba1·...·]-2">}</span><span·class="w"> |
| 146 | ··</span><span·class="n">Seconds</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Milliseconds</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Microseconds</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">int</span><span·class="p"·data-group-id=" | 146 | ··</span><span·class="n">Seconds</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Milliseconds</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Microseconds</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">int</span><span·class="p"·data-group-id="1465922431-3">(</span><span·class="p"·data-group-id="1465922431-3">)</span></code></pre><p><code·class="inline">SeqTraceInfo</code>·can·have·the·following·formats:</p><ul><li><p><strong><code·class="inline">{send,·Serial,·From,·To,·Message}</code></strong>·-·Used·when·a·process·<code·class="inline">From</code>·with·its |
| 147 | trace·token·flag·<code·class="inline">send</code>·set·to·<code·class="inline">true</code>·has·sent·information.·<code·class="inline">To</code>·may·be·a | 147 | trace·token·flag·<code·class="inline">send</code>·set·to·<code·class="inline">true</code>·has·sent·information.·<code·class="inline">To</code>·may·be·a |
| 148 | process·identifier,·a·registered·name·on·a·node·represented·as | 148 | process·identifier,·a·registered·name·on·a·node·represented·as |
| 149 | <code·class="inline">{NameAtom,·NodeAtom}</code>,·or·a·node·name·represented·as·an·atom.·<code·class="inline">From</code>·may·be·a | 149 | <code·class="inline">{NameAtom,·NodeAtom}</code>,·or·a·node·name·represented·as·an·atom.·<code·class="inline">From</code>·may·be·a |
| 150 | process·identifier·or·a·node·name·represented·as·an·atom.·<code·class="inline">Message</code>·contains | 150 | process·identifier·or·a·node·name·represented·as·an·atom.·<code·class="inline">Message</code>·contains |
| 151 | the·information·passed·along·in·this·information·transfer.·If·the·transfer·is | 151 | the·information·passed·along·in·this·information·transfer.·If·the·transfer·is |
| 152 | done·via·message·passing,·it·is·the·actual·message.</p></li><li><p><strong><code·class="inline">{'receive',·Serial,·From,·To,·Message}</code></strong>·-·Used·when·a·process·<code·class="inline">To</code> | 152 | done·via·message·passing,·it·is·the·actual·message.</p></li><li><p><strong><code·class="inline">{'receive',·Serial,·From,·To,·Message}</code></strong>·-·Used·when·a·process·<code·class="inline">To</code> |
| 153 | receives·information·with·a·trace·token·that·has·flag·<code·class="inline">'receive'</code>·set·to | 153 | receives·information·with·a·trace·token·that·has·flag·<code·class="inline">'receive'</code>·set·to |
| Offset 283, 76 lines modified | Offset 283, 76 lines modified | ||
| 283 | from·the·sequential·tracing·point·of·view.</p><h2·id="module-example-of-use"·class="section-heading"> | 283 | from·the·sequential·tracing·point·of·view.</p><h2·id="module-example-of-use"·class="section-heading"> |
| 284 | ··<a·href="#module-example-of-use"·class="hover-link"> | 284 | ··<a·href="#module-example-of-use"·class="hover-link"> |
| 285 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 285 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 286 | ··</a> | 286 | ··</a> |
| 287 | ··<span·class="text">Example·of·Use</span> | 287 | ··<span·class="text">Example·of·Use</span> |
| 288 | </h2> | 288 | </h2> |
| 289 | <p>This·example·gives·a·rough·idea·of·how·the·new·primitives·can·be·used·and·what | 289 | <p>This·example·gives·a·rough·idea·of·how·the·new·primitives·can·be·used·and·what |
| 290 | kind·of·output·it·produces.</p><p>Assume·that·you·have·an·initiating·process·with·<code·class="inline">Pid·==·<0.30.0></code>·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 290 | kind·of·output·it·produces.</p><p>Assume·that·you·have·an·initiating·process·with·<code·class="inline">Pid·==·<0.30.0></code>·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="7615082946-1">(</span><span·class="ss">seqex</span><span·class="p"·data-group-id="7615082946-1">)</span><span·class="p">.</span><span·class="w"> |
| 291 | </span><span·class="p">-</span><span·class="na">compile</span><span·class="p"·data-group-id=" | 291 | </span><span·class="p">-</span><span·class="na">compile</span><span·class="p"·data-group-id="7615082946-2">(</span><span·class="ss">export_all</span><span·class="p"·data-group-id="7615082946-2">)</span><span·class="p">.</span><span·class="w"> |
| 292 | </span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 292 | </span><span·class="nf">loop</span><span·class="p"·data-group-id="7615082946-3">(</span><span·class="n">Port</span><span·class="p"·data-group-id="7615082946-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 293 | ····</span><span·class="k">receive</span><span·class="w"> | 293 | ····</span><span·class="k">receive</span><span·class="w"> |
| 294 | ········</span><span·class="p"·data-group-id=" | 294 | ········</span><span·class="p"·data-group-id="7615082946-4">{</span><span·class="n">Port</span><span·class="p">,</span><span·class="n">Message</span><span·class="p"·data-group-id="7615082946-4">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 295 | ············</span><span·class="nc">seq_trace</span><span·class="p">:</span><span·class="nf">set_token</span><span·class="p"·data-group-id=" | 295 | ············</span><span·class="nc">seq_trace</span><span·class="p">:</span><span·class="nf">set_token</span><span·class="p"·data-group-id="7615082946-5">(</span><span·class="ss">label</span><span·class="p">,</span><span·class="mi">17</span><span·class="p"·data-group-id="7615082946-5">)</span><span·class="p">,</span><span·class="w"> |
| 296 | ············</span><span·class="nc">seq_trace</span><span·class="p">:</span><span·class="nf">set_token</span><span·class="p"·data-group-id=" | 296 | ············</span><span·class="nc">seq_trace</span><span·class="p">:</span><span·class="nf">set_token</span><span·class="p"·data-group-id="7615082946-6">(</span><span·class="ss">'receive'</span><span·class="p">,</span><span·class="ss">true</span><span·class="p"·data-group-id="7615082946-6">)</span><span·class="p">,</span><span·class="w"> |
| 297 | ············</span><span·class="nc">seq_trace</span><span·class="p">:</span><span·class="nf">set_token</span><span·class="p"·data-group-id=" | 297 | ············</span><span·class="nc">seq_trace</span><span·class="p">:</span><span·class="nf">set_token</span><span·class="p"·data-group-id="7615082946-7">(</span><span·class="ss">print</span><span·class="p">,</span><span·class="ss">true</span><span·class="p"·data-group-id="7615082946-7">)</span><span·class="p">,</span><span·class="w"> |
| 298 | ············</span><span·class="nc">seq_trace</span><span·class="p">:</span><span·class="nf">print</span><span·class="p"·data-group-id=" | 298 | ············</span><span·class="nc">seq_trace</span><span·class="p">:</span><span·class="nf">print</span><span·class="p"·data-group-id="7615082946-8">(</span><span·class="mi">17</span><span·class="p">,</span><span·class="s">"****·Trace·Started·****"</span><span·class="p"·data-group-id="7615082946-8">)</span><span·class="p">,</span><span·class="w"> |
| 299 | ············</span><span·class="ss">call_server</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 299 | ············</span><span·class="ss">call_server</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="7615082946-9">{</span><span·class="nf">self</span><span·class="p"·data-group-id="7615082946-10">(</span><span·class="p"·data-group-id="7615082946-10">)</span><span·class="p">,</span><span·class="ss">the_message</span><span·class="p"·data-group-id="76150829[·...·truncated·by·diffoscope;·len:·2,·SHA:·25fc0e7096fc653718202dc30b0c580b8ab87eac11a700cba03a7c021bc35b0c·...·]-9">}</span><span·class="p">;</span><span·class="w"> |
| 300 | ········</span><span·class="p"·data-group-id=" | 300 | ········</span><span·class="p"·data-group-id="7615082946-11">{</span><span·class="ss">ack</span><span·class="p">,</span><span·class="n">Ack</span><span·class="p"·data-group-id="7615082946-11">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 301 | ············</span><span·class="ss">ok</span><span·class="w"> | 301 | ············</span><span·class="ss">ok</span><span·class="w"> |
| 302 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 302 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 303 | ····</span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 303 | ····</span><span·class="nf">loop</span><span·class="p"·data-group-id="7615082946-12">(</span><span·class="n">Port</span><span·class="p"·data-group-id="7615082946-12">)</span><span·class="p">.</span></code></pre><p>And·a·registered·process·<code·class="inline">call_server</code>·with·<code·class="inline">Pid·==·<0.31.0>[·...·truncated·by·diffoscope;·len:·192,·SHA:·ffce3e5d60375e4847ec0e82eefe4a64a4c1054ada605c2804c8e98d9a6d29cf·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 304 | ····</span><span·class="k">receive</span><span·class="w"> | 304 | ····</span><span·class="k">receive</span><span·class="w"> |
| 305 | ········</span><span·class="p"·data-group-id=" | 305 | ········</span><span·class="p"·data-group-id="2475720244-2">{</span><span·class="n">PortController</span><span·class="p">,</span><span·class="n">Message</span><span·class="p"·data-group-id="2475720244-2">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 306 | ············</span><span·class="n">Ack</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 306 | ············</span><span·class="n">Ack</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2475720244-3">{</span><span·class="ss">received</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Message</span><span·class="p"·data-group-id="2475720244-3">}</span><span·class="p">,</span><span·class="w"> |
| 307 | ············</span><span·class="nc">seq_trace</span><span·class="p">:</span><span·class="nf">print</span><span·class="p"·data-group-id=" | 307 | ············</span><span·class="nc">seq_trace</span><span·class="p">:</span><span·class="nf">print</span><span·class="p"·data-group-id="2475720244-4">(</span><span·class="mi">17</span><span·class="p">,</span><span·class="s">"We·are·here·now"</span><span·class="p"·data-group-id="2475720244-4">)</span><span·class="p">,</span><span·class="w"> |
| 308 | ············</span><span·class="n">PortController</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 308 | ············</span><span·class="n">PortController</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="2475720244-5">{</span><span·class="ss">ack</span><span·class="p">,</span><span·class="n">Ack</span><span·class="p"·data-group-id="2475720244-5">}</span><span·class="w"> |
| 309 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 309 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 310 | ····</span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 310 | ····</span><span·class="nf">loop</span><span·class="p"·data-group-id="2475720244-6">(</span><span·class="p"·data-group-id="2475720244-6">)</span><span·class="p">.</span></code></pre><p>A·possible·output·from·the·system's·<code·class="inline">sequential_tracer</code>·can·be·like·this:</p><pre><code·class="makeup·erlang"·trans[·...·truncated·by·diffoscope;·len:·434,·SHA:·70be2c8da37e83ce28ec8cbf4e03e1dea89f6d83c825570ac9f6301836713b42·...·]-1">}</span><span·class="w">·</span><span·class="n">WITH</span><span·class="w"> |
| 311 | </span><span·class="s">"****·Trace·Started·****"</span><span·class="w"> | 311 | </span><span·class="s">"****·Trace·Started·****"</span><span·class="w"> |
| 312 | </span><span·class="mi">17</span><span·class="p">:</span><span·class="o"><</span><span·class="mf">0.31</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">·</span><span·class="n">Received</span><span·class="w">·</span><span·class="p"·data-group-id=" | 312 | </span><span·class="mi">17</span><span·class="p">:</span><span·class="o"><</span><span·class="mf">0.31</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">·</span><span·class="n">Received</span><span·class="w">·</span><span·class="p"·data-group-id="5268637481-2">{</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="5268637481-2">}</span><span·class="w">·</span><span·class="n">FROM</span><span·class="w">·</span><span·class="o"><</span><span·class="mf">0.30</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">·</span><span·class="n">WITH</span><span·class="w"> |
| 313 | </span><span·class="p"·data-group-id=" | 313 | </span><span·class="p"·data-group-id="5268637481-3">{</span><span·class="o"><</span><span·class="mf">0.30</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="ss">the_message</span><span·class="p"·data-group-id="5268637481-3">}</span><span·class="w"> |
| 314 | </span><span·class="mi">17</span><span·class="p">:</span><span·class="o"><</span><span·class="mf">0.31</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">·</span><span·class="n">Info</span><span·class="w">·</span><span·class="p"·data-group-id=" | 314 | </span><span·class="mi">17</span><span·class="p">:</span><span·class="o"><</span><span·class="mf">0.31</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">·</span><span·class="n">Info</span><span·class="w">·</span><span·class="p"·data-group-id="5268637481-4">{</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="5268637481-4">}</span><span·class="w">·</span><span·class="n">WITH</span><span·class="w"> |
| 315 | </span><span·class="s">"We·are·here·now"</span><span·class="w"> | 315 | </span><span·class="s">"We·are·here·now"</span><span·class="w"> |
| 316 | </span><span·class="mi">17</span><span·class="p">:</span><span·class="o"><</span><span·class="mf">0.30</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">·</span><span·class="n">Received</span><span·class="w">·</span><span·class="p"·data-group-id=" | 316 | </span><span·class="mi">17</span><span·class="p">:</span><span·class="o"><</span><span·class="mf">0.30</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">·</span><span·class="n">Received</span><span·class="w">·</span><span·class="p"·data-group-id="5268637481-5">{</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">4</span><span·class="p"·data-group-id="5268637481-5">}</span><span·class="w">·</span><span·class="n">FROM</span><span·class="w">·</span><span·class="o"><</span><span·class="mf">0.31</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">·</span><span·class="n">WITH</span><span·class="w"> |
| 317 | </span><span·class="p"·data-group-id=" | 317 | </span><span·class="p"·data-group-id="5268637481-6">{</span><span·class="ss">ack</span><span·class="p">,</span><span·class="p"·data-group-id="5268637481-7">{</span><span·class="ss">received</span><span·class="p">,</span><span·class="ss">the_message</span><span·class="p"·data-group-id="52686374[·...·truncated·by·diffoscope;·len:·55,·SHA:·32e08310ba3a9af627919e0bb335fd656fb4fc7df055fca9174bc97d2ee9c90f·...·]-6">}</span></code></pre><p>The·implementation·of·a·system·tracer·process·that·produces·this·printout·can |
| 318 | look·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">tracer</span><span·class="p"·data-group-id=" | 318 | look·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">tracer</span><span·class="p"·data-group-id="9373648309-1">(</span><span·class="p"·data-group-id="9373648309-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 319 | ····</span><span·class="k">receive</span><span·class="w"> | 319 | ····</span><span·class="k">receive</span><span·class="w"> |
| 320 | ········</span><span·class="p"·data-group-id=" | 320 | ········</span><span·class="p"·data-group-id="9373648309-2">{</span><span·class="ss">seq_trace</span><span·class="p">,</span><span·class="n">Label</span><span·class="p">,</span><span·class="n">TraceInfo</span><span·class="p"·data-group-id="9373648309-2">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 321 | ···········</span><span·class="nf">print_trace</span><span·class="p"·data-group-id=" | 321 | ···········</span><span·class="nf">print_trace</span><span·class="p"·data-group-id="9373648309-3">(</span><span·class="n">Label</span><span·class="p">,</span><span·class="n">TraceInfo</span><span·class="p">,</span><span·class="ss">false</span><span·class="p"·data-group-id="9373648309-3">)</span><span·class="p">;</span><span·class="w"> |
| 322 | ········</span><span·class="p"·data-group-id=" | 322 | ········</span><span·class="p"·data-group-id="9373648309-4">{</span><span·class="ss">seq_trace</span><span·class="p">,</span><span·class="n">Label</span><span·class="p">,</span><span·class="n">TraceInfo</span><span·class="p">,</span><span·class="n">Ts</span><span·class="p"·data-group-id="9373648309-4">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 323 | ···········</span><span·class="nf">print_trace</span><span·class="p"·data-group-id=" | 323 | ···········</span><span·class="nf">print_trace</span><span·class="p"·data-group-id="9373648309-5">(</span><span·class="n">Label</span><span·class="p">,</span><span·class="n">TraceInfo</span><span·class="p">,</span><span·class="n">Ts</span><span·class="p"·data-group-id="9373648309-5">)</span><span·class="p">;</span><span·class="w"> |
| 324 | ········</span><span·class="p">_</span><span·class="n">Other</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ignore</span><span·class="w"> | 324 | ········</span><span·class="p">_</span><span·class="n">Other</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ignore</span><span·class="w"> |
| 325 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 325 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 326 | ····</span><span·class="nf">tracer</span><span·class="p"·data-group-id=" | 326 | ····</span><span·class="nf">tracer</span><span·class="p"·data-group-id="9373648309-6">(</span><span·class="p"·data-group-id="9373648309-6">)</span><span·class="p">.</span><span·class="w"> |
| 327 | </span><span·class="nf">print_trace</span><span·class="p"·data-group-id=" | 327 | </span><span·class="nf">print_trace</span><span·class="p"·data-group-id="9373648309-7">(</span><span·class="n">Label</span><span·class="p">,</span><span·class="n">TraceInfo</span><span·class="p">,</span><span·class="ss">false</span><span·class="p"·data-group-id="9373648309-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 328 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 328 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="9373648309-8">(</span><span·class="s">"</span><span·class="si">~p</span><span·class="s">:"</span><span·class="p">,</span><span·class="p"·data-group-id="9373648309-9">[</span><span·class="n">Label</span><span·class="p"·data-group-id="9373648309-9"[·...·truncated·by·diffoscope;·len:·50,·SHA:·f030b2531ccc878f4f7a0e0a86482f074d922b8526e7fa79107b7bc7be97f1b1·...·]-8">)</span><span·class="p">,</span><span·class="w"> |
| 329 | ····</span><span·class="nf">print_trace</span><span·class="p"·data-group-id=" | 329 | ····</span><span·class="nf">print_trace</span><span·class="p"·data-group-id="9373648309-10">(</span><span·class="n">TraceInfo</span><span·class="p"·data-group-id="9373648309-10">)</span><span·class="p">;</span><span·class="w"> |
| 330 | </span><span·class="nf">print_trace</span><span·class="p"·data-group-id=" | 330 | </span><span·class="nf">print_trace</span><span·class="p"·data-group-id="9373648309-11">(</span><span·class="n">Label</span><span·class="p">,</span><span·class="n">TraceInfo</span><span·class="p">,</span><span·class="n">Ts</span><span·class="p"·data-group-id="9373648309-11">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 331 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 331 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="9373648309-12">(</span><span·class="s">"</span><span·class="si">~p</span><span·class="s">·</span><span·class="si">~p</span><span·class="s">:"</span><span·class="p">,</span><span·class="p"·data-group-id="9373648309-13">[</span><span·class="n">Labe[·...·truncated·by·diffoscope;·len:·152,·SHA:·db452ee11e3e383cc2843fc5073ea46990b0cb1e937cdda0b4c7376bac82237b·...·]-12">)</span><span·class="p">,</span><span·class="w"> |
| 332 | ····</span><span·class="nf">print_trace</span><span·class="p"·data-group-id=" | 332 | ····</span><span·class="nf">print_trace</span><span·class="p"·data-group-id="9373648309-14">(</span><span·class="n">TraceInfo</span><span·class="p"·data-group-id="9373648309-14">)</span><span·class="p">.</span><span·class="w"> |
| 333 | </span><span·class="nf">print_trace</span><span·class="p"·data-group-id=" | 333 | </span><span·class="nf">print_trace</span><span·class="p"·data-group-id="9373648309-15">(</span><span·class="p"·data-group-id="9373648309-16">{</span><span·class="ss">print</span><span·class="p">,</span><span·class="n">Serial</span><span·class="p">,</span><span·class="n">From</span><span·class="p">,</span><span·class="p">_</spa[·...·truncated·by·diffoscope;·len:·148,·SHA:·3f0b419e53714aeb40ce2bbdd12855a17ab09813b5a83dcc38766f2bb68cfec0·...·]-15">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 334 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 334 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="9373648309-17">(</span><span·class="s">"</span><span·class="si">~p</span><span·class="s">·Info·</span><span·class="si">~p</span><span·class="s">·WITH</span><span·class="si">~n</span><span·class="si">~p</span><span·class="si">~n</span><span·class="s">&[·...·truncated·by·diffoscope;·len:·340,·SHA:·ed069d0c6cdd9468e49dd1bc922a544aa644c41f5f7ec85bf802e26b34d836c1·...·]-17">)</span><span·class="p">;</span><span·class="w"> |
| 335 | </span><span·class="nf">print_trace</span><span·class="p"·data-group-id=" | 335 | </span><span·class="nf">print_trace</span><span·class="p"·data-group-id="9373648309-19">(</span><span·class="p"·data-group-id="9373648309-20">{</span><span·class="ss">'receive'</span><span·class="p">,</span><span·class="n">Serial</span><span·class="p">,</span><span·class="n">From</span><span·class="p">,</span><span·clas[·...·truncated·by·diffoscope;·len:·164,·SHA:·268034e6c2ce1ea590dcf90e46996fa1113ca4c0ddce9f6201408d04f6de86f6·...·]-19">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 336 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 336 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="9373648309-21">(</span><span·class="s">"</span><span·class="si">~p</span><span·class="s">·Received·</span><span·class="si">~p</span><span·class="s">·FROM·</span><span·class="si">~p</span><span·class="s">·WITH</span><span·class="si">~n</span><span·class="si">~p</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w"> |
| 337 | ··············</span><span·class="p"·data-group-id=" | 337 | ··············</span><span·class="p"·data-group-id="9373648309-22">[</span><span·class="n">To</span><span·class="p">,</span><span·class="n">Serial</span><span·class="p">,</span><span·class="n">From</span><span·class="p">,</span><span·class="n">Message</span><span·class="p"·data-group-id="9373648309-22">]</s[·...·truncated·by·diffoscope;·len:·45,·SHA:·d7efc7cb9258f91ac96e46ddcb077bab29e88073fbbe1d66560b476e862f451c·...·]-21">)</span><span·class="p">;</span><span·class="w"> |
| 338 | </span><span·class="nf">print_trace</span><span·class="p"·data-group-id=" | 338 | </span><span·class="nf">print_trace</span><span·class="p"·data-group-id="9373648309-23">(</span><span·class="p"·data-group-id="9373648309-24">{</span><span·class="nb">send</span><span·class="p">,</span><span·class="n">Serial</span><span·class="p">,</span><span·class="n">From</span><span·class="p">,</span><span·class="n">To</spa[·...·truncated·by·diffoscope;·len:·151,·SHA:·2c1eefdfc8b5f87ef0bd98bfba7047796b95b4bafdec2f591e06d90bced0aa8f·...·]-23">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 339 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 339 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="9373648309-25">(</span><span·class="s">"</span><span·class="si">~p</span><span·class="s">·Sent·</span><span·class="si">~p</span><span·class="s">·TO·</span><span·class="si">~p</span><span·class="s">·WITH</span><span·class="si">~n</span><span·class="si">~p</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w"> |
| 340 | ··············</span><span·class="p"·data-group-id=" | 340 | ··············</span><span·class="p"·data-group-id="9373648309-26">[</span><span·class="n">From</span><span·class="p">,</span><span·class="n">Serial</span><span·class="p">,</span><span·class="n">To</span><span·class="p">,</span><span·class="n">Message</span><span·class="p"·data-group-id="9373648309-26">]</s[·...·truncated·by·diffoscope;·len:·45,·SHA:·d7efc7cb9258f91ac96e46ddcb077bab29e88073fbbe1d66560b476e862f451c·...·]-25">)</span><span·class="p">.</span></code></pre><p>The·code·that·creates·a·process·that·runs·this·tracer·function·and·sets·that |
| 341 | process·as·the·system·tracer·can·look·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">start</span><span·class="p"·data-group-id=" | 341 | process·as·the·system·tracer·can·look·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">start</span><span·class="p"·data-group-id="4592354026-1">(</span><span·class="p"·data-group-id="4592354026-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 342 | ····</span><span·class="n">Pid</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">spawn</span><span·class="p"·data-group-id=" | 342 | ····</span><span·class="n">Pid</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">spawn</span><span·class="p"·data-group-id="4592354026-2">(</span><span·class="o">?</span><span·class="n">MODULE</span><span·class="p">,</span><span·class="ss">tracer</span><span·class="p">,</span><span·class="p"·data-group-id="4592354026-3">[</span><span·class="p"·data-group-id="4592354026-3">]</sp[·...·truncated·by·diffoscope;·len:·44,·SHA:·3ef3f45c3589c66ff8d79e830176a0e3b83a0123883f877bfcf6fbe9f9c12edc·...·]-2">)</span><span·class="p">,</span><span·class="w"> |
| 343 | ····</span><span·class="nc">seq_trace</span><span·class="p">:</span><span·class="nf">set_system_tracer</span><span·class="p"·data-group-id=" | 343 | ····</span><span·class="nc">seq_trace</span><span·class="p">:</span><span·class="nf">set_system_tracer</span><span·class="p"·data-group-id="4592354026-4">(</span><span·class="n">Pid</span><span·class="p"·data-group-id="4592354026-4">)</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%·set·Pid·as·the·system·tracer</span><span·class="w"> |
| 344 | ····</span><span·class="ss">ok</span><span·class="p">.</span></code></pre><p>With·a·function·like·<code·class="inline">test/0</code>,·the·whole·example·can·be·started:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">test</span><span·class="p"·data-group-id=" | 344 | ····</span><span·class="ss">ok</span><span·class="p">.</span></code></pre><p>With·a·function·like·<code·class="inline">test/0</code>,·the·whole·example·can·be·started:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">test</span><span·class="p"·data-group-id="0855462032-1">(</span><span·class="p"·data-group-id="0855462032-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 345 | ····</span><span·class="n">P</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">spawn</span><span·class="p"·data-group-id=" | 345 | ····</span><span·class="n">P</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">spawn</span><span·class="p"·data-group-id="0855462032-2">(</span><span·class="o">?</span><span·class="n">MODULE</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">loop</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0855462032-3">[</span><spa[·...·truncated·by·diffoscope;·len:·118,·SHA:·0eecc5f169b33452ac4261e0ba78f4b1846da8fae7f6d8611135becc43c01c25·...·]-2">)</span><span·class="p">,</span><span·class="w"> |
| 346 | ····</span><span·class="nf">register</span><span·class="p"·data-group-id=" | 346 | ····</span><span·class="nf">register</span><span·class="p"·data-group-id="0855462032-4">(</span><span·class="ss">call_server</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">spawn</span><span·class="p"·data-group-id="0855462032-5">(</span><span·class="o">?</span><span·class="n">MODULE</span><span·class="p">[·...·truncated·by·diffoscope;·len:·308,·SHA:·c18fab0e7cd0c3e678795cc9782420282f5cbda87e5b30b6d5be7fada4f9341b·...·]-4">)</span><span·class="p">,</span><span·class="w"> |
| 347 | ····</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 347 | ····</span><span·class="nf">start</span><span·class="p"·data-group-id="0855462032-7">(</span><span·class="p"·data-group-id="0855462032-7">)</span><span·class="p">,</span><span·class="w"> |
| 348 | ····</span><span·class="n">P</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 348 | ····</span><span·class="n">P</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="0855462032-8">{</span><span·class="ss">port</span><span·class="p">,</span><span·class="ss">message</span><span·class="p"·data-group-id="0855462032-8">}</span><span·class="p">.</span></code></pre> |
| 349 | ····</section> | 349 | ····</section> |
| 350 | </div> | 350 | </div> |
| 351 | ··<section·id="summary"·class="details-list"> | 351 | ··<section·id="summary"·class="details-list"> |
| 352 | ····<h1·class="section-heading"> | 352 | ····<h1·class="section-heading"> |
| 353 | ······<a·class="hover-link"·href="#summary"> | 353 | ······<a·class="hover-link"·href="#summary"> |
| Offset 907, 19 lines modified | Offset 907, 19 lines modified | ||
| 907 | ······</div> | 907 | ······</div> |
| 908 | <p>Sets·the·trace·token·for·the·calling·process·to·<code·class="inline">Token</code>.·If·<code·class="inline">Token·==·[]</code>·then | 908 | <p>Sets·the·trace·token·for·the·calling·process·to·<code·class="inline">Token</code>.·If·<code·class="inline">Token·==·[]</code>·then |
| 909 | tracing·is·disabled,·otherwise·<code·class="inline">Token</code>·should·be·an·Erlang·term·returned·from | 909 | tracing·is·disabled,·otherwise·<code·class="inline">Token</code>·should·be·an·Erlang·term·returned·from |
| 910 | <a·href="#get_token/0"><code·class="inline">get_token/0</code></a>·or·<a·href="#set_token/1"><code·class="inline">set_token/1</code></a>.·<a·href="#set_token/1"><code·class="inline">set_token/1</code></a> | 910 | <a·href="#get_token/0"><code·class="inline">get_token/0</code></a>·or·<a·href="#set_token/1"><code·class="inline">set_token/1</code></a>.·<a·href="#set_token/1"><code·class="inline">set_token/1</code></a> |
| 911 | can·be·used·to·temporarily·exclude·message·passing·from·the·trace·by·setting·the | 911 | can·be·used·to·temporarily·exclude·message·passing·from·the·trace·by·setting·the |
| 912 | trace·token·to·empty·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">OldToken</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">seq_trace</span><span·class="p">:</span><span·class="nf">set_token</span><span·class="p"·data-group-id=" | 912 | trace·token·to·empty·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">OldToken</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">seq_trace</span><span·class="p">:</span><span·class="nf">set_token</span><span·class="p"·data-group-id="5379396887-1">(</span><span·class="p"·data-group-id="5379396887-2">[</span><span·class="p"·data-group-id="5379396887-2">]</span><span·class="p"·data-group-id="5379396887-1">)</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%·set·to·empty·and·save</span><span·class="w"> |
| 913 | ····································</span><span·class="c1">%·old·value</span><span·class="w"> | 913 | ····································</span><span·class="c1">%·old·value</span><span·class="w"> |
| 914 | </span><span·class="c1">%·do·something·that·should·not·be·part·of·the·trace</span><span·class="w"> | 914 | </span><span·class="c1">%·do·something·that·should·not·be·part·of·the·trace</span><span·class="w"> |
| 915 | </span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 915 | </span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="5379396887-3">(</span><span·class="s">"Exclude·the·signalling·caused·by·this</span><span·class="si">~n</span><span·class="s">"</span><span·class="p"·data-group-id="5379396887-3">)</span><span·class="p">,</span><span·class="w"> |
| 916 | </span><span·class="nc">seq_trace</span><span·class="p">:</span><span·class="nf">set_token</span><span·class="p"·data-group-id=" | 916 | </span><span·class="nc">seq_trace</span><span·class="p">:</span><span·class="nf">set_token</span><span·class="p"·data-group-id="5379396887-4">(</span><span·class="n">OldToken</span><span·class="p"·data-group-id="5379396887-4">)</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%·activate·the·trace·token·again</span><span·class="w"> |
| 917 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>Returns·the·previous·value·of·the·trace·token.</p> | 917 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>Returns·the·previous·value·of·the·trace·token.</p> |
| 918 | ··</section> | 918 | ··</section> |
| 919 | </section> | 919 | </section> |
| 920 | <section·class="detail"·id="set_token/2"> | 920 | <section·class="detail"·id="set_token/2"> |
| 921 | ··<div·class="detail-header"> | 921 | ··<div·class="detail-header"> |
| 922 | ····<a·href="#set_token/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 922 | ····<a·href="#set_token/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 168, 16 lines modified | Offset 168, 16 lines modified | ||
| 168 | and·using·that·as·the·<code·class="inline">Timeout | Handle</code>·argument,·the·same·<code·class="inline">Handle</code> | 168 | and·using·that·as·the·<code·class="inline">Timeout | Handle</code>·argument,·the·same·<code·class="inline">Handle</code> |
| 169 | will·then·be·the·<a·href="#t:select_handle/0"><code·class="inline">SelectHandle</code></a>·in·the·returned | 169 | will·then·be·the·<a·href="#t:select_handle/0"><code·class="inline">SelectHandle</code></a>·in·the·returned |
| 170 | <a·href="#t:select_info/0"><code·class="inline">select_info/0</code></a>·and·the·received·<code·class="inline">select</code>·message,·or·be | 170 | <a·href="#t:select_info/0"><code·class="inline">select_info/0</code></a>·and·the·received·<code·class="inline">select</code>·message,·or·be |
| 171 | the·<a·href="#t:completion_handle/0"><code·class="inline">CompletionHandle</code></a>·in·the·returned | 171 | the·<a·href="#t:completion_handle/0"><code·class="inline">CompletionHandle</code></a>·in·the·returned |
| 172 | <a·href="#t:completion_info/0"><code·class="inline">completion_info/0</code></a>·and·the·received·<code·class="inline">completion</code>·message.</p><p>The·compiler·may·then·optimize·a·following·<code·class="inline">receive</code>·statement | 172 | <a·href="#t:completion_info/0"><code·class="inline">completion_info/0</code></a>·and·the·received·<code·class="inline">completion</code>·message.</p><p>The·compiler·may·then·optimize·a·following·<code·class="inline">receive</code>·statement |
| 173 | to·only·scan·the·messages·that·arrive·after·the·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:reference/0"><code·class="inline">reference/0</code></a> | 173 | to·only·scan·the·messages·that·arrive·after·the·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:reference/0"><code·class="inline">reference/0</code></a> |
| 174 | is·created.··If·the·message·queue·is·large·this·is·a·big·optimization.</p><p>The·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:reference/0"><code·class="inline">reference/0</code></a>·has·to·be·unique·for·the·call.</p><h4>Repeating·an·Operation·on·a·<code·class="inline">select</code>·Systems</h4><p>On<code·class="inline">select</code>·systems,·if·a·call·would·be·repeated·<em>before</em>·the·<code·class="inline">select</code> | 174 | is·created.··If·the·message·queue·is·large·this·is·a·big·optimization.</p><p>The·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:reference/0"><code·class="inline">reference/0</code></a>·has·to·be·unique·for·the·call.</p><h4>Repeating·an·Operation·on·a·<code·class="inline">select</code>·Systems</h4><p>On<code·class="inline">select</code>·systems,·if·a·call·would·be·repeated·<em>before</em>·the·<code·class="inline">select</code> |
| 175 | message·has·been·received·it·replaces·the·call·in·progress:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">····</span><span·class="p"·data-group-id=" | 175 | message·has·been·received·it·replaces·the·call·in·progress:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">····</span><span·class="p"·data-group-id="3590824532-1">{</span><span·class="ss">select</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3590824532-2">{</span><span·class="ss">select_info</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Hand[·...·truncated·by·diffoscope;·len:·471,·SHA:·39bfc82467bdd8284ef94d98e756a74ae4d98ad9d4a7da2394d21c79345c7a34·...·]-3">)</span><span·class="p">,</span><span·class="w"> |
| 176 | ····</span><span·class="p"·data-group-id=" | 176 | ····</span><span·class="p"·data-group-id="3590824532-4">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">timeout</span><span·class="p"·data-group-id="3590824532-4">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·280,·SHA:·da27ab6dc95f856de2a64835a9e1be8d898b942f4be90327466e9e999dd505d9·...·]-5">)</span><span·class="p">,</span><span·class="w"> |
| 177 | ····</span><span·class="p">:</span></code></pre><p>Above,·<code·class="inline">Handle</code>·is·<em>no·longer</em>·valid·once·the·second·<a·href="#accept/2"><code·class="inline">accept/2</code></a>,·call | 177 | ····</span><span·class="p">:</span></code></pre><p>Above,·<code·class="inline">Handle</code>·is·<em>no·longer</em>·valid·once·the·second·<a·href="#accept/2"><code·class="inline">accept/2</code></a>,·call |
| 178 | has·been·made·(the·first·call·is·automatically·canceled). | 178 | has·been·made·(the·first·call·is·automatically·canceled). |
| 179 | After·the·second·<a·href="#accept/2"><code·class="inline">accept/2</code></a>·call·returns·<code·class="inline">{error,·timeout}</code>, | 179 | After·the·second·<a·href="#accept/2"><code·class="inline">accept/2</code></a>·call·returns·<code·class="inline">{error,·timeout}</code>, |
| 180 | the·accept·operation·has·completed.</p><p>Note·that·there·is·a·race·here;·there·is·no·way·to·know·if·the·call | 180 | the·accept·operation·has·completed.</p><p>Note·that·there·is·a·race·here;·there·is·no·way·to·know·if·the·call |
| 181 | is·repeated·<em>before</em>·the·<code·class="inline">select</code>·message·is·sent·since·it·<em>may</em> | 181 | is·repeated·<em>before</em>·the·<code·class="inline">select</code>·message·is·sent·since·it·<em>may</em> |
| 182 | have·been·sent·just·before·the·repeated·call.··So·now·there | 182 | have·been·sent·just·before·the·repeated·call.··So·now·there |
| 183 | might·be·a·<code·class="inline">select</code>·message·containing·<code·class="inline">Handle</code>·in·the·inbox.</p><h4>The·<code·class="inline">abort</code>·Message</h4><p>Another·message·the·user·must·be·prepared·for | 183 | might·be·a·<code·class="inline">select</code>·message·containing·<code·class="inline">Handle</code>·in·the·inbox.</p><h4>The·<code·class="inline">abort</code>·Message</h4><p>Another·message·the·user·must·be·prepared·for |
| Offset 202, 36 lines modified | Offset 202, 36 lines modified | ||
| 202 | (<a·href="#t:completion_handle/0">completion·handle</a>) | 202 | (<a·href="#t:completion_handle/0">completion·handle</a>) |
| 203 | API·features·could·be·considered·no·longer·experimental.</li></ul><h2·id="module-examples"·class="section-heading"> | 203 | API·features·could·be·considered·no·longer·experimental.</li></ul><h2·id="module-examples"·class="section-heading"> |
| 204 | ··<a·href="#module-examples"·class="hover-link"> | 204 | ··<a·href="#module-examples"·class="hover-link"> |
| 205 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 205 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 206 | ··</a> | 206 | ··</a> |
| 207 | ··<span·class="text">Examples</span> | 207 | ··<span·class="text">Examples</span> |
| 208 | </h2> | 208 | </h2> |
| 209 | <pre><code·class="makeup·erlang"·translate="no"><span·class="nf">client</span><span·class="p"·data-group-id=" | 209 | <pre><code·class="makeup·erlang"·translate="no"><span·class="nf">client</span><span·class="p"·data-group-id="7647945383-1">(</span><span·class="n">SAddr</span><span·class="p">,</span><span·class="w">·</span><span·class="n">SPort</span><span·class="p"·data-group-id="7647945383-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 210 | ···</span><span·class="p"·data-group-id=" | 210 | ···</span><span·class="p"·data-group-id="7647945383-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Sock</span><span·class="p"·data-group-id="7647945383-2">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·cl[·...·truncated·by·diffoscope;·len:·348,·SHA:·dab61d2a1ef65697d3be9bb281de786d2433f873f24216dac76ff75df975d1ac·...·]3-3">)</span><span·class="p">,</span><span·class="w"> |
| 211 | ···</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">connect</span><span·class="p"·data-group-id=" | 211 | ···</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">connect</span><span·class="p"·data-group-id="7647945383-4">(</span><span·class="n">Sock</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7647945383-5">#{</span><span·class="ss">family</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">inet</span><span·class="p">,</span><span·class="w"> |
| 212 | ·······························</span><span·class="ss">addr</span><span·class="w">···</span><span·class="p">=></span><span·class="w">·</span><span·class="n">SAddr</span><span·class="p">,</span><span·class="w"> | 212 | ·······························</span><span·class="ss">addr</span><span·class="w">···</span><span·class="p">=></span><span·class="w">·</span><span·class="n">SAddr</span><span·class="p">,</span><span·class="w"> |
| 213 | ·······························</span><span·class="ss">port</span><span·class="w">···</span><span·class="p">=></span><span·class="w">·</span><span·class="n">SPort</span><span·class="p"·data-group-id=" | 213 | ·······························</span><span·class="ss">port</span><span·class="w">···</span><span·class="p">=></span><span·class="w">·</span><span·class="n">SPort</span><span·class="p"·data-group-id="7647945383-5">}</span><span·class="p"·data-group-id="7647945383-4">)</span><span·class="p">,</span><span·class="w"> |
| 214 | ···</span><span·class="n">Msg</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4915565353-6"><<</span><span·class="s">"hello"</span><span·class="p"·data-group-id="4915565353-6">>></span><span·class="p">,</span><span·class="w"> | ||
| 215 | ···</span><span·class=" | 214 | ···</span><span·class="n">Msg</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7647945383-6"><<</span><span·class="s">"hello"</span><span·class="p"·data-group-id="7647945383-6">>></span><span·class="p">,</span><span·class="w"> |
| 215 | ···</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">send</span><span·class="p"·data-group-id="7647945383-7">(</span><span·class="n">Sock</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p"·data-group-id="7647945383-7">)</span><span·class="p">,</span><span·class="w"> | ||
| 216 | ···</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">shutdown</span><span·class="p"·data-group-id=" | 216 | ···</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">shutdown</span><span·class="p"·data-group-id="7647945383-8">(</span><span·class="n">Sock</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">write</span><span·class="p"·data-group-id="7647945383-8">)</span><span·class="p">,</span><span·class="w"> |
| 217 | ···</span><span·class="p"·data-group-id=" | 217 | ···</span><span·class="p"·data-group-id="7647945383-9">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p"·data-group-id="7647945383-9">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·cla[·...·truncated·by·diffoscope;·len:·194,·SHA:·2620a7f746ea0e7d3f80b317a9c4fdc9bf789628eec2a46100649c3f91492823·...·]3-10">)</span><span·class="p">,</span><span·class="w"> |
| 218 | ···</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id=" | 218 | ···</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id="7647945383-11">(</span><span·class="n">Sock</span><span·class="p"·data-group-id="7647945383-11">)</span><span·class="p">.</span><span·class="w"> |
| 219 | </span><span·class="nf">server</span><span·class="p"·data-group-id=" | 219 | </span><span·class="nf">server</span><span·class="p"·data-group-id="7647945383-12">(</span><span·class="n">Addr</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Port</span><span·class="p"·data-group-id="7647945383-12">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 220 | ···</span><span·class="p"·data-group-id=" | 220 | ···</span><span·class="p"·data-group-id="7647945383-13">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">LSock</span><span·class="p"·data-group-id="7647945383-13">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span[·...·truncated·by·diffoscope;·len:·352,·SHA:·e827287a331c3a28ce691712ffc393529e8a99f780a572c3b2a88b7ac4dd2ead·...·]3-14">)</span><span·class="p">,</span><span·class="w"> |
| 221 | ···</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">bind</span><span·class="p"·data-group-id=" | 221 | ···</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">bind</span><span·class="p"·data-group-id="7647945383-15">(</span><span·class="n">LSock</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7647945383-16">#{</span><span·class="ss">family</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">inet</span><span·class="p">,</span><span·class="w"> |
| 222 | ·····························</span><span·class="ss">port</span><span·class="w">···</span><span·class="p">=></span><span·class="w">·</span><span·class="n">Port</span><span·class="p">,</span><span·class="w"> | 222 | ·····························</span><span·class="ss">port</span><span·class="w">···</span><span·class="p">=></span><span·class="w">·</span><span·class="n">Port</span><span·class="p">,</span><span·class="w"> |
| 223 | ·····························</span><span·class="ss">addr</span><span·class="w">···</span><span·class="p">=></span><span·class="w">·</span><span·class="n">Addr</span><span·class="p"·data-group-id=" | 223 | ·····························</span><span·class="ss">addr</span><span·class="w">···</span><span·class="p">=></span><span·class="w">·</span><span·class="n">Addr</span><span·class="p"·data-group-id="7647945383-16">}</span><span·class="p"·data-group-id="7647945383-15">)</span><span·class="p">,</span><span·class="w"> |
| 224 | ···</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">listen</span><span·class="p"·data-group-id=" | 224 | ···</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">listen</span><span·class="p"·data-group-id="7647945383-17">(</span><span·class="n">LSock</span><span·class="p"·data-group-id="7647945383-17">)</span><span·class="p">,</span><span·class="w"> |
| 225 | ···</span><span·class="p"·data-group-id=" | 225 | ···</span><span·class="p"·data-group-id="7647945383-18">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Sock</span><span·class="p"·data-group-id="7647945383-18">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·[·...·truncated·by·diffoscope;·len:·200,·SHA:·427b9eb58806dff3347286a9b1d7b6e5bdb3fb969a98e481a748d7707c6db4c5·...·]3-19">)</span><span·class="p">,</span><span·class="w"> |
| 226 | ···</span><span·class="p"·data-group-id=" | 226 | ···</span><span·class="p"·data-group-id="7647945383-20">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p"·data-group-id="7647945383-20">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·c[·...·truncated·by·diffoscope;·len:·196,·SHA:·5e4823fc25caeff23ede4f0c0a0cdeb983e25a3e97208453d2429ac32001e5ff·...·]3-21">)</span><span·class="p">,</span><span·class="w"> |
| 227 | ···</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">send</span><span·class="p"·data-group-id=" | 227 | ···</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">send</span><span·class="p"·data-group-id="7647945383-22">(</span><span·class="n">Sock</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p"·data-group-id="7647945383-22">)</span><span·class="p">,</span><span·class="w"> |
| 228 | ···</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id=" | 228 | ···</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id="7647945383-23">(</span><span·class="n">Sock</span><span·class="p"·data-group-id="7647945383-23">)</span><span·class="p">,</span><span·class="w"> |
| 229 | ···</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id=" | 229 | ···</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id="7647945383-24">(</span><span·class="n">LSock</span><span·class="p"·data-group-id="7647945383-24">)</span><span·class="p">.</span></code></pre> |
| 230 | ····</section> | 230 | ····</section> |
| 231 | </div> | 231 | </div> |
| 232 | ··<section·id="summary"·class="details-list"> | 232 | ··<section·id="summary"·class="details-list"> |
| 233 | ····<h1·class="section-heading"> | 233 | ····<h1·class="section-heading"> |
| 234 | ······<a·class="hover-link"·href="#summary"> | 234 | ······<a·class="hover-link"·href="#summary"> |
| Offset 4669, 15 lines modified | Offset 4669, 15 lines modified | ||
| 4669 | with·its·name·and·address.</p></li><li><p><strong><code·class="inline">nread</code></strong>·-·Get·the·number·of·bytes·immediately·available·for·reading | 4669 | with·its·name·and·address.</p></li><li><p><strong><code·class="inline">nread</code></strong>·-·Get·the·number·of·bytes·immediately·available·for·reading |
| 4670 | <em>(since·OTP·26.1)</em>.</p><p>Result;·the·number·of·bytes,·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:integer/0"><code·class="inline">integer/0</code></a>.</p></li><li><p><strong><code·class="inline">nwrite</code></strong>·-·Get·the·number·of·bytes·in·the·send·queue | 4670 | <em>(since·OTP·26.1)</em>.</p><p>Result;·the·number·of·bytes,·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:integer/0"><code·class="inline">integer/0</code></a>.</p></li><li><p><strong><code·class="inline">nwrite</code></strong>·-·Get·the·number·of·bytes·in·the·send·queue |
| 4671 | <em>(since·OTP·26.1)</em>.</p><p>Result;·the·number·of·bytes,·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:integer/0"><code·class="inline">integer/0</code></a>.</p></li><li><p><strong><code·class="inline">nspace</code></strong>·-·Get·the·free·space·in·the·send·queue | 4671 | <em>(since·OTP·26.1)</em>.</p><p>Result;·the·number·of·bytes,·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:integer/0"><code·class="inline">integer/0</code></a>.</p></li><li><p><strong><code·class="inline">nspace</code></strong>·-·Get·the·free·space·in·the·send·queue |
| 4672 | <em>(since·OTP·26.1)</em>.</p><p>Result;·the·number·of·bytes,·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:integer/0"><code·class="inline">integer/0</code></a>.</p></li><li><p><strong><code·class="inline">atmark</code></strong>·-·Test·if·there·is·OOB·(out-of-bound)·data·waiting·to·be·read | 4672 | <em>(since·OTP·26.1)</em>.</p><p>Result;·the·number·of·bytes,·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:integer/0"><code·class="inline">integer/0</code></a>.</p></li><li><p><strong><code·class="inline">atmark</code></strong>·-·Test·if·there·is·OOB·(out-of-bound)·data·waiting·to·be·read |
| 4673 | <em>(since·OTP·26.1)</em>.</p><p>Result;·a·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:boolean/0"><code·class="inline">boolean/0</code></a>.</p></li><li><p><strong><code·class="inline">tcp_info</code></strong>·-·Get·miscellaneous·TCP·related·information·for·a | 4673 | <em>(since·OTP·26.1)</em>.</p><p>Result;·a·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:boolean/0"><code·class="inline">boolean/0</code></a>.</p></li><li><p><strong><code·class="inline">tcp_info</code></strong>·-·Get·miscellaneous·TCP·related·information·for·a |
| 4674 | <em>connected</em>·socket·<em>(since·OTP·26.1)</em>.</p><p>Result;·a·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:map/0"><code·class="inline">map/0</code></a>·with·information·items·as·key-value·pairs.</p></li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Not·all·requests·are·supported·by·all·platforms. | 4674 | <em>connected</em>·socket·<em>(since·OTP·26.1)</em>.</p><p>Result;·a·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:map/0"><code·class="inline">map/0</code></a>·with·information·items·as·key-value·pairs.</p></li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Not·all·requests·are·supported·by·all·platforms. |
| 4675 | To·see·if·a·ioctl·request·is·supported·on·the·current·platform:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">······</span><span·class="n">Request</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">nread</span><span·class="p">,</span><span·class="w"> | 4675 | To·see·if·a·ioctl·request·is·supported·on·the·current·platform:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">······</span><span·class="n">Request</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">nread</span><span·class="p">,</span><span·class="w"> |
| 4676 | ······</span><span·class="ss">true</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">is_supported</span><span·class="p"·data-group-id=" | 4676 | ······</span><span·class="ss">true</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">is_supported</span><span·class="p"·data-group-id="3693743766-1">(</span><span·class="ss">ioctl_requests</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Request</span><span·class="p"·data-group-id="3693743766-1">)</span><span·class="p">,</span><span·class="w"> |
| 4677 | ······</span><span·class="p">:</span></code></pre></section> | 4677 | ······</span><span·class="p">:</span></code></pre></section> |
| 4678 | ··</section> | 4678 | ··</section> |
| 4679 | </section> | 4679 | </section> |
| 4680 | <section·class="detail"·id="ioctl/3"> | 4680 | <section·class="detail"·id="ioctl/3"> |
| 4681 | ··<div·class="detail-header"> | 4681 | ··<div·class="detail-header"> |
| 4682 | ····<a·href="#ioctl/3"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 4682 | ····<a·href="#ioctl/3"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 4827, 15 lines modified | Offset 4827, 15 lines modified | ||
| 4827 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·is_supported(Key1·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>())·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:boolean/0">boolean</a>().</pre> | 4827 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·is_supported(Key1·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>())·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:boolean/0">boolean</a>().</pre> |
| 4828 | ······</div> | 4828 | ······</div> |
| 4829 | <p>Check·if·a·socket·feature·is·supported.</p><p>Returns·<code·class="inline">true</code>·if·<a·href="#supports/0"><code·class="inline">supports/0</code></a>·has·a·<code·class="inline">{Key1,·true}</code>·tuple | 4829 | <p>Check·if·a·socket·feature·is·supported.</p><p>Returns·<code·class="inline">true</code>·if·<a·href="#supports/0"><code·class="inline">supports/0</code></a>·has·a·<code·class="inline">{Key1,·true}</code>·tuple |
| 4830 | or·a·<code·class="inline">{Key1,·list()}</code>·tuple·in·its·returned·list, | 4830 | or·a·<code·class="inline">{Key1,·list()}</code>·tuple·in·its·returned·list, |
| 4831 | otherwise·<code·class="inline">false</code>·(also·for·unknown·keys).</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">true</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">is_supported</span><span·class="p"·data-group-id=" | 4831 | otherwise·<code·class="inline">false</code>·(also·for·unknown·keys).</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">true</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">is_supported</span><span·class="p"·data-group-id="1392509377-1">(</span><span·class="ss">local</span><span·class="p"·data-group-id="1392509377-1">)</span><span·class="p">,</span></code></pre> |
| 4832 | ··</section> | 4832 | ··</section> |
| 4833 | </section> | 4833 | </section> |
| 4834 | <section·class="detail"·id="is_supported/2"> | 4834 | <section·class="detail"·id="is_supported/2"> |
| 4835 | ··<div·class="detail-header"> | 4835 | ··<div·class="detail-header"> |
| 4836 | ····<a·href="#is_supported/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 4836 | ····<a·href="#is_supported/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 4837 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 4837 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 4856, 15 lines modified | Offset 4856, 15 lines modified | ||
| 4856 | ······<div·class="specs"> | 4856 | ······<div·class="specs"> |
| 4857 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·is_supported(Key1·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>(),·Key2·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>())·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:boolean/0">boolean</a>().</pre> | 4857 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·is_supported(Key1·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>(),·Key2·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>())·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:boolean/0">boolean</a>().</pre> |
| 4858 | ······</div> | 4858 | ······</div> |
| 4859 | <p>Check·if·a·socket·feature·is·supported.</p><p>Returns·<code·class="inline">true</code>·if·<a·href="#supports/1"><code·class="inline">supports(Key1)</code></a>·has·a·<code·class="inline">{Key2,·true}</code>·tuple | 4859 | <p>Check·if·a·socket·feature·is·supported.</p><p>Returns·<code·class="inline">true</code>·if·<a·href="#supports/1"><code·class="inline">supports(Key1)</code></a>·has·a·<code·class="inline">{Key2,·true}</code>·tuple |
| 4860 | in·its·returned·list,·otherwise·<code·class="inline">false</code>·(also·for·unknown·keys).</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">true</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">is_supported</span><span·class="p"·data-group-id=" | 4860 | in·its·returned·list,·otherwise·<code·class="inline">false</code>·(also·for·unknown·keys).</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">true</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">is_supported</span><span·class="p"·data-group-id="3575568477-1">(</span><span·class="ss">msg_flags</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">errqueue</span><span·class="p"·data-group-id="3575568477-1">)</span><span·class="p">,</span></code></pre> |
| 4861 | ··</section> | 4861 | ··</section> |
| 4862 | </section> | 4862 | </section> |
| 4863 | <section·class="detail"·id="listen/1"> | 4863 | <section·class="detail"·id="listen/1"> |
| 4864 | ··<div·class="detail-header"> | 4864 | ··<div·class="detail-header"> |
| 4865 | ····<a·href="#listen/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 4865 | ····<a·href="#listen/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 4866 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 4866 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 4947, 15 lines modified | Offset 4947, 15 lines modified | ||
| 4947 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·monitor(Socket·::·<a·href="#t:socket/0">socket</a>())·->·MonitorRef·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:reference/0">reference</a>().</pre> | 4947 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·monitor(Socket·::·<a·href="#t:socket/0">socket</a>())·->·MonitorRef·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:reference/0">reference</a>().</pre> |
| 4948 | ······</div> | 4948 | ······</div> |
| 4949 | <p>Start·a·socket·monitor.</p><p>If·the·<code·class="inline">Socket</code>·doesn't·exist·or·when·later·the·monitor·is·triggered, | 4949 | <p>Start·a·socket·monitor.</p><p>If·the·<code·class="inline">Socket</code>·doesn't·exist·or·when·later·the·monitor·is·triggered, |
| 4950 | a·<code·class="inline">'DOWN'</code>·message·is·sent·to·the·process·that·called·<a·href="#monitor/1"><code·class="inline">monitor/1</code></a> | 4950 | a·<code·class="inline">'DOWN'</code>·message·is·sent·to·the·process·that·called·<a·href="#monitor/1"><code·class="inline">monitor/1</code></a> |
| 4951 | with·the·following·pattern:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">» ····</span><span·class="p"·data-group-id=" | 4951 | with·the·following·pattern:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">» ····</span><span·class="p"·data-group-id="5422520133-1">{</span><span·class="ss">'DOWN'</span><span·class="p">,</span><span·class="w">·</span><span·class="n">MonitorRef</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">socket</span><span·class="p">,</span><span·class="[·...·truncated·by·diffoscope;·len:·156,·SHA:·24a319dd6b5fa6a6c5136a3b256ef6a332ff6db8c1e2ad2969b1b5a056e92773·...·]-1">}</span></code></pre><p><code·class="inline">Info</code>·is·the·termination·reason·of·the·socket·or·<code·class="inline">nosock</code>·if |
| 4952 | <code·class="inline">Socket</code>·did·not·exist·when·the·monitor·was·started.</p><p>Making·several·calls·to·<a·href="#monitor/1"><code·class="inline">socket:monitor/1</code></a>·for·the·same·<code·class="inline">Socket</code>·is·not·an | 4952 | <code·class="inline">Socket</code>·did·not·exist·when·the·monitor·was·started.</p><p>Making·several·calls·to·<a·href="#monitor/1"><code·class="inline">socket:monitor/1</code></a>·for·the·same·<code·class="inline">Socket</code>·is·not·an |
| 4953 | error;·each·call·creates·an·independent·monitor·instance.</p> | 4953 | error;·each·call·creates·an·independent·monitor·instance.</p> |
| 4954 | ··</section> | 4954 | ··</section> |
| 4955 | </section> | 4955 | </section> |
| 4956 | <section·class="detail"·id="number_of/0"> | 4956 | <section·class="detail"·id="number_of/0"> |
| 4957 | ··<div·class="detail-header"> | 4957 | ··<div·class="detail-header"> |
| Offset 182, 244 lines modified | Offset 182, 244 lines modified | ||
| 182 | effects·<em>that</em>·specific·socket).</p><h2·id="example"·class="section-heading"> | 182 | effects·<em>that</em>·specific·socket).</p><h2·id="example"·class="section-heading"> |
| 183 | ··<a·href="#example"·class="hover-link"> | 183 | ··<a·href="#example"·class="hover-link"> |
| 184 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 184 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 185 | ··</a> | 185 | ··</a> |
| 186 | ··<span·class="text">Example</span> | 186 | ··<span·class="text">Example</span> |
| 187 | </h2> | 187 | </h2> |
| 188 | <p>This·example·is·intended·to·show·how·to·create·a·simple·(echo)·server | 188 | <p>This·example·is·intended·to·show·how·to·create·a·simple·(echo)·server |
| 189 | (and·client).</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="9 | 189 | (and·client).</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="4974416773-1">(</span><span·class="ss">example</span><span·class="p"·data-group-id="4974416773-1">)</span><span·class="p">.</span><span·class="w"> |
| 190 | </span><span·class="w"> | 190 | </span><span·class="w"> |
| 191 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="9 | 191 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="4974416773-2">(</span><span·class="p"·data-group-id="4974416773-3">[</span><span·class="ss">client</span><span·class="p">/</span><span·class="mi">2</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">client</span><span·class="p">/</span>[·...·truncated·by·diffoscope;·len:·119,·SHA:·0353646696ae40c36c112bcb8b85f1b7aea2383cead145f28aa80417484de211·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 192 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="9 | 192 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="4974416773-4">(</span><span·class="p"·data-group-id="4974416773-5">[</span><span·class="ss">server</span><span·class="p">/</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">server</span><span·class="p">/</span>[·...·truncated·by·diffoscope;·len:·246,·SHA:·34e671674ac43a48865276f164980f8250ea87b1a33d8218cc08d8745b7e1070·...·]-4">)</span><span·class="p">.</span><span·class="w"> |
| 193 | </span><span·class="c1">%%·======================================================================</span><span·class="w"> | 193 | </span><span·class="c1">%%·======================================================================</span><span·class="w"> |
| 194 | </span><span·class="c1">%%·===·Client·===</span><span·class="w"> | 194 | </span><span·class="c1">%%·===·Client·===</span><span·class="w"> |
| 195 | </span><span·class="nf">client</span><span·class="p"·data-group-id="9 | 195 | </span><span·class="nf">client</span><span·class="p"·data-group-id="4974416773-6">(</span><span·class="p"·data-group-id="4974416773-7">#{</span><span·class="ss">family</span><span·class="w">·</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">Family</span><span·class="p"·data-group-id="4974416773-7">}</[·...·truncated·by·diffoscope;·len:·229,·SHA:·747d7780d43dd27ae4f6ac70991eaf7af7892f3478a1c8cf610f62d86af9784f·...·]-6">)</span><span·class="w"> |
| 196 | ··</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_list</span><span·class="p"·data-group-id="9 | 196 | ··</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_list</span><span·class="p"·data-group-id="4974416773-8">(</span><span·class="n">Msg</span><span·class="p"·data-group-id="4974416773-8">)</span><span·class="w">·</span><span·class="ow">orelse</span><span·class="w">·</span><span·class="nf">is_binary</span><span·class="p"·data-group-id="4974416773-9"[·...·truncated·by·diffoscope;·len:·76,·SHA:·e38ced324b44ba35b29e93b2315a7f4c55b421c01d42f6cbb7a1dda25b80650a·...·]-9">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 197 | ····</span><span·class="p"·data-group-id="9 | 197 | ····</span><span·class="p"·data-group-id="4974416773-10">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Sock</span><span·class="p"·data-group-id="4974416773-10">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·[·...·truncated·by·diffoscope;·len:·357,·SHA:·50577a4ea0f9178040731ddd8189d0f4e4639fc8215e3454b3473f8473b868f7·...·]-11">)</span><span·class="p">,</span><span·class="w"> |
| 198 | ····</span><span·class="ss">ok</span><span·class="w">·········</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">maybe_bind</span><span·class="p"·data-group-id="9 | 198 | ····</span><span·class="ss">ok</span><span·class="w">·········</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">maybe_bind</span><span·class="p"·data-group-id="4974416773-12">(</span><span·class="n">Sock</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Family</span><span·class="p"·data-group-id="4974416773-12">)</span><span·class="p">,</span><span·class="w"> |
| 199 | ····</span><span·class="ss">ok</span><span·class="w">·········</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">connect</span><span·class="p"·data-group-id="9 | 199 | ····</span><span·class="ss">ok</span><span·class="w">·········</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">connect</span><span·class="p"·data-group-id="4974416773-13">(</span><span·class="n">Sock</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ServerSockAddr</span><span·class="p"·data-group-id="4974416773-13">)</span><span·class="p">,</span><span·class="w"> |
| 200 | ····</span><span·class="nf">client_exchange</span><span·class="p"·data-group-id="9 | 200 | ····</span><span·class="nf">client_exchange</span><span·class="p"·data-group-id="4974416773-14">(</span><span·class="n">Sock</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p"·data-group-id="4974416773-14">)</span><span·class="p">;</span><span·class="w"> |
| 201 | </span><span·class="nf">client</span><span·class="p"·data-group-id="9 | 201 | </span><span·class="nf">client</span><span·class="p"·data-group-id="4974416773-15">(</span><span·class="n">ServerPort</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p"·data-group-id="4974416773-15">)</span><span·class="w"> |
| 202 | ··</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_integer</span><span·class="p"·data-group-id="9 | 202 | ··</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_integer</span><span·class="p"·data-group-id="4974416773-16">(</span><span·class="n">ServerPort</span><span·class="p"·data-group-id="4974416773-16">)</span><span·class="w">·</span><span·class="nf">andalso</span><span·class="w">·</span><span·class="p"·data-group-id="4974416773-17">(</span><span·class="[·...·truncated·by·diffoscope;·len:·161,·SHA:·6ad63298ccaab22d13b5703c91a91c59afb8a8a0f6b999465afe5d72a611b882·...·]-17">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 203 | ····</span><span·class="n">Family</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">inet</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%·Default</span><span·class="w"> | 203 | ····</span><span·class="n">Family</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">inet</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%·Default</span><span·class="w"> |
| 204 | ····</span><span·class="n">Addr</span><span·class="w">·····</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">get_local_addr</span><span·class="p"·data-group-id="9 | 204 | ····</span><span·class="n">Addr</span><span·class="w">·····</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">get_local_addr</span><span·class="p"·data-group-id="4974416773-18">(</span><span·class="n">Family</span><span·class="p"·data-group-id="4974416773-18">)</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%·Pick·an·address</span><span·class="w"> |
| 205 | ····</span><span·class="n">SockAddr</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="9 | 205 | ····</span><span·class="n">SockAddr</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4974416773-19">#{</span><span·class="ss">family</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="n">Family</span><span·class="p">,</span><span·class="w"> |
| 206 | » » ·</span><span·class="ss">addr</span><span·class="w">···</span><span·class="p">=></span><span·class="w">·</span><span·class="n">Addr</span><span·class="p">,</span><span·class="w"> | 206 | » » ·</span><span·class="ss">addr</span><span·class="w">···</span><span·class="p">=></span><span·class="w">·</span><span·class="n">Addr</span><span·class="p">,</span><span·class="w"> |
| 207 | » » ·</span><span·class="ss">port</span><span·class="w">···</span><span·class="p">=></span><span·class="w">·</span><span·class="n">ServerPort</span><span·class="p"·data-group-id="9 | 207 | » » ·</span><span·class="ss">port</span><span·class="w">···</span><span·class="p">=></span><span·class="w">·</span><span·class="n">ServerPort</span><span·class="p"·data-group-id="4974416773-19">}</span><span·class="p">,</span><span·class="w"> |
| 208 | ····</span><span·class="nf">client</span><span·class="p"·data-group-id="9 | 208 | ····</span><span·class="nf">client</span><span·class="p"·data-group-id="4974416773-20">(</span><span·class="n">SockAddr</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p"·data-group-id="4974416773-20">)</span><span·class="p">.</span><span·class="w"> |
| 209 | </span><span·class="nf">client</span><span·class="p"·data-group-id="9 | 209 | </span><span·class="nf">client</span><span·class="p"·data-group-id="4974416773-21">(</span><span·class="n">ServerPort</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ServerAddr</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p"·data-group-id="4974416773-21">)</span><span·class="w"> |
| 210 | ··</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_integer</span><span·class="p"·data-group-id="9 | 210 | ··</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_integer</span><span·class="p"·data-group-id="4974416773-22">(</span><span·class="n">ServerPort</span><span·class="p"·data-group-id="4974416773-22">)</span><span·class="w">·</span><span·class="nf">andalso</span><span·class="w">·</span><span·class="p"·data-group-id="4974416773-23">(</span><span·class="[·...·truncated·by·diffoscope;·len:·161,·SHA:·6ad63298ccaab22d13b5703c91a91c59afb8a8a0f6b999465afe5d72a611b882·...·]-23">)</span><span·class="w">·</span><span·class="ow">andalso</span><span·class="w"> |
| 211 | ·······</span><span·class="nf">is_tuple</span><span·class="p"·data-group-id="9 | 211 | ·······</span><span·class="nf">is_tuple</span><span·class="p"·data-group-id="4974416773-24">(</span><span·class="n">ServerAddr</span><span·class="p"·data-group-id="4974416773-24">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 212 | ····</span><span·class="n">Family</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">which_family</span><span·class="p"·data-group-id="9 | 212 | ····</span><span·class="n">Family</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">which_family</span><span·class="p"·data-group-id="4974416773-25">(</span><span·class="n">ServerAddr</span><span·class="p"·data-group-id="4974416773-25">)</span><span·class="p">,</span><span·class="w"> |
| 213 | ····</span><span·class="n">SockAddr</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="9 | 213 | ····</span><span·class="n">SockAddr</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4974416773-26">#{</span><span·class="ss">family</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="n">Family</span><span·class="p">,</span><span·class="w"> |
| 214 | » » ·</span><span·class="ss">addr</span><span·class="w">···</span><span·class="p">=></span><span·class="w">·</span><span·class="n">ServerAddr</span><span·class="p">,</span><span·class="w"> | 214 | » » ·</span><span·class="ss">addr</span><span·class="w">···</span><span·class="p">=></span><span·class="w">·</span><span·class="n">ServerAddr</span><span·class="p">,</span><span·class="w"> |
| 215 | » » ·</span><span·class="ss">port</span><span·class="w">···</span><span·class="p">=></span><span·class="w">·</span><span·class="n">ServerPort</span><span·class="p"·data-group-id="9 | 215 | » » ·</span><span·class="ss">port</span><span·class="w">···</span><span·class="p">=></span><span·class="w">·</span><span·class="n">ServerPort</span><span·class="p"·data-group-id="4974416773-26">}</span><span·class="p">,</span><span·class="w"> |
| 216 | ····</span><span·class="nf">client</span><span·class="p"·data-group-id="9 | 216 | ····</span><span·class="nf">client</span><span·class="p"·data-group-id="4974416773-27">(</span><span·class="n">SockAddr</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p"·data-group-id="4974416773-27">)</span><span·class="p">.</span><span·class="w"> |
| 217 | </span><span·class="c1">%%·Send·the·message·to·the·(echo)·server·and·wait·for·the·echo·to·come·back.</span><span·class="w"> | 217 | </span><span·class="c1">%%·Send·the·message·to·the·(echo)·server·and·wait·for·the·echo·to·come·back.</span><span·class="w"> |
| 218 | </span><span·class="nf">client_exchange</span><span·class="p"·data-group-id="9 | 218 | </span><span·class="nf">client_exchange</span><span·class="p"·data-group-id="4974416773-28">(</span><span·class="n">Sock</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p"·data-group-id="4974416773-28">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><sp[·...·truncated·by·diffoscope;·len:·149,·SHA:·073d959bf540b33cec63aa1e8a2b1a2b6bfadb439bcaeb65f3c53b807723a3e0·...·]-29">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 219 | ····</span><span·class="nf">client_exchange</span><span·class="p"·data-group-id="9 | 219 | ····</span><span·class="nf">client_exchange</span><span·class="p"·data-group-id="4974416773-30">(</span><span·class="n">Sock</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">list_to_binary</span><span·class="p"·data-group-id="4974416773-31">(</span><span·class="n">Msg</span><span·class="p"·data-group-id="497441677[·...·truncated·by·diffoscope;·len:·55,·SHA:·75b2d1150ffc59304a894f1b5494d2a6ad91e65a3d6d1dc273a21f664e58aefc·...·]-30">)</span><span·class="p">;</span><span·class="w"> |
| 220 | </span><span·class="nf">client_exchange</span><span·class="p"·data-group-id="9 | 220 | </span><span·class="nf">client_exchange</span><span·class="p"·data-group-id="4974416773-32">(</span><span·class="n">Sock</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p"·data-group-id="4974416773-32">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><sp[·...·truncated·by·diffoscope;·len:·151,·SHA:·824dacbe81b8c19dfe8221ace9c22a6e2557aaf6211b27ad59d5e97a90c24881·...·]-33">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 221 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">send</span><span·class="p"·data-group-id="9 | 221 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">send</span><span·class="p"·data-group-id="4974416773-34">(</span><span·class="n">Sock</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">infinity</span><span·class="p"·data-group-id="4974416773-34">)</span><span·class="p">,</span><span·class="w"> |
| 222 | ····</span><span·class="p"·data-group-id="9 | 222 | ····</span><span·class="p"·data-group-id="4974416773-35">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p"·data-group-id="4974416773-35">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·c[·...·truncated·by·diffoscope;·len:·492,·SHA:·1967e8b36acbcad2d5b4b329131dac4e664acff8a3ad2ce6f697b8ba6ce4facc·...·]-36">)</span><span·class="p">,</span><span·class="w"> |
| 223 | ····</span><span·class="ss">ok</span><span·class="p">.</span><span·class="w"> | 223 | ····</span><span·class="ss">ok</span><span·class="p">.</span><span·class="w"> |
| 224 | </span><span·class="c1">%%·======================================================================</span><span·class="w"> | 224 | </span><span·class="c1">%%·======================================================================</span><span·class="w"> |
| 225 | </span><span·class="c1">%%·===·Server·===</span><span·class="w"> | 225 | </span><span·class="c1">%%·===·Server·===</span><span·class="w"> |
| 226 | </span><span·class="nf">server</span><span·class="p"·data-group-id="9 | 226 | </span><span·class="nf">server</span><span·class="p"·data-group-id="4974416773-38">(</span><span·class="p"·data-group-id="4974416773-38">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 227 | ····</span><span·class="c1">%%·Make·system·choose·port·(and·address)</span><span·class="w"> | 227 | ····</span><span·class="c1">%%·Make·system·choose·port·(and·address)</span><span·class="w"> |
| 228 | ····</span><span·class="nf">server</span><span·class="p"·data-group-id="9 | 228 | ····</span><span·class="nf">server</span><span·class="p"·data-group-id="4974416773-39">(</span><span·class="mi">0</span><span·class="p"·data-group-id="4974416773-39">)</span><span·class="p">.</span><span·class="w"> |
| 229 | </span><span·class="c1">%%·This·function·return·the·port·and·address·that·it·actually·uses,</span><span·class="w"> | 229 | </span><span·class="c1">%%·This·function·return·the·port·and·address·that·it·actually·uses,</span><span·class="w"> |
| 230 | </span><span·class="c1">%%·in·case·server/0·or·server/1·(with·a·port·number)·was·used·to·start·it.</span><span·class="w"> | 230 | </span><span·class="c1">%%·in·case·server/0·or·server/1·(with·a·port·number)·was·used·to·start·it.</span><span·class="w"> |
| 231 | </span><span·class="nf">server</span><span·class="p"·data-group-id="9 | 231 | </span><span·class="nf">server</span><span·class="p"·data-group-id="4974416773-40">(</span><span·class="p"·data-group-id="4974416773-41">#{</span><span·class="ss">family</span><span·class="w">·</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">Family</span><span·class="p">,</span><span·class="w">·</spa[·...·truncated·by·diffoscope;·len:·501,·SHA:·2a68e472cba78962c7058719070cb89a8667c32e86a40a291866e6b56db9d504·...·]-40">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 232 | ····</span><span·class="p"·data-group-id="9 | 232 | ····</span><span·class="p"·data-group-id="4974416773-42">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Sock</span><span·class="p"·data-group-id="4974416773-42">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·[·...·truncated·by·diffoscope;·len:·353,·SHA:·051eb9b11104d93512a71ffddc733a27def55f90b5b0579ded77c5e1f5376a4e·...·]-43">)</span><span·class="p">,</span><span·class="w"> |
| 233 | ····</span><span·class="ss">ok</span><span·class="w">·········</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">bind</span><span·class="p"·data-group-id="9 | 233 | ····</span><span·class="ss">ok</span><span·class="w">·········</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">bind</span><span·class="p"·data-group-id="4974416773-44">(</span><span·class="n">Sock</span><span·class="p">,</span><span·class="w">·</span><span·class="n">SockAddr</span><span·class="p"·data-group-id="4974416773-44">)</span><span·class="p">,</span><span·class="w"> |
| 234 | ····</span><span·class="ss">ok</span><span·class="w">·········</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">listen</span><span·class="p"·data-group-id="9 | 234 | ····</span><span·class="ss">ok</span><span·class="w">·········</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">listen</span><span·class="p"·data-group-id="4974416773-45">(</span><span·class="n">Sock</span><span·class="p"·data-group-id="4974416773-45">)</span><span·class="p">,</span><span·class="w"> |
| 235 | ····</span><span·class="p"·data-group-id="9 | 235 | ····</span><span·class="p"·data-group-id="4974416773-46">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4974416773-47">#{</span><span·class="ss">port</span><span·class="w">·</span><span·class="p">:=</span><span·class="w">·</span><sp[·...·truncated·by·diffoscope;·len:·412,·SHA:·41c2f42807dac3b706f1d383a31e4b03c0379f2f725a804bee81b77fbd29a120·...·]-48">)</span><span·class="p">,</span><span·class="w"> |
| 236 | ····</span><span·class="n">Acceptor</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">start_acceptor</span><span·class="p"·data-group-id="9 | 236 | ····</span><span·class="n">Acceptor</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">start_acceptor</span><span·class="p"·data-group-id="4974416773-49">(</span><span·class="n">Sock</span><span·class="p"·data-group-id="4974416773-49">)</span><span·class="p">,</span><span·class="w"> |
| 237 | ····</span><span·class="p"·data-group-id="9 | 237 | ····</span><span·class="p"·data-group-id="4974416773-50">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4974416773-51">{</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Addr</span><sp[·...·truncated·by·diffoscope;·len:·171,·SHA:·95547916f6c0c2f01e08523b9a09c042081903c63d30b0f065457017a98483b6·...·]-50">}</span><span·class="p">;</span><span·class="w"> |
| 238 | </span><span·class="nf">server</span><span·class="p"·data-group-id="9 | 238 | </span><span·class="nf">server</span><span·class="p"·data-group-id="4974416773-52">(</span><span·class="n">Port</span><span·class="p"·data-group-id="4974416773-52">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_integer</span><span·class="p"·data-group-id="4974416773-5[·...·truncated·by·diffoscope;·len:·79,·SHA:·9da7c4d7506ab8c9478a46bb10c627ffc788233ee62b7fd14e4874a4bf4e571d·...·]-53">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 239 | ····</span><span·class="n">Family</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">inet</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%·Default</span><span·class="w"> | 239 | ····</span><span·class="n">Family</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">inet</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%·Default</span><span·class="w"> |
| 240 | ····</span><span·class="n">Addr</span><span·class="w">·····</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">get_local_addr</span><span·class="p"·data-group-id="9 | 240 | ····</span><span·class="n">Addr</span><span·class="w">·····</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">get_local_addr</span><span·class="p"·data-group-id="4974416773-54">(</span><span·class="n">Family</span><span·class="p"·data-group-id="4974416773-54">)</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%·Pick·an·address</span><span·class="w"> |
| 241 | ····</span><span·class="n">SockAddr</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="9 | 241 | ····</span><span·class="n">SockAddr</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4974416773-55">#{</span><span·class="ss">family</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="n">Family</span><span·class="p">,</span><span·class="w"> |
| 242 | » » ·</span><span·class="ss">addr</span><span·class="w">···</span><span·class="p">=></span><span·class="w">·</span><span·class="n">Addr</span><span·class="p">,</span><span·class="w"> | 242 | » » ·</span><span·class="ss">addr</span><span·class="w">···</span><span·class="p">=></span><span·class="w">·</span><span·class="n">Addr</span><span·class="p">,</span><span·class="w"> |
| 243 | » » ·</span><span·class="ss">port</span><span·class="w">···</span><span·class="p">=></span><span·class="w">·</span><span·class="n">Port</span><span·class="p"·data-group-id="9 | 243 | » » ·</span><span·class="ss">port</span><span·class="w">···</span><span·class="p">=></span><span·class="w">·</span><span·class="n">Port</span><span·class="p"·data-group-id="4974416773-55">}</span><span·class="p">,</span><span·class="w"> |
| 244 | ····</span><span·class="nf">server</span><span·class="p"·data-group-id="9 | 244 | ····</span><span·class="nf">server</span><span·class="p"·data-group-id="4974416773-56">(</span><span·class="n">SockAddr</span><span·class="p"·data-group-id="4974416773-56">)</span><span·class="p">.</span><span·class="w"> |
| 245 | </span><span·class="nf">server</span><span·class="p"·data-group-id="9 | 245 | </span><span·class="nf">server</span><span·class="p"·data-group-id="4974416773-57">(</span><span·class="n">Port</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Addr</span><span·class="p"·data-group-id="4974416773-57">)</span><span·class="w"> |
| 246 | ··</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_integer</span><span·class="p"·data-group-id="9 | 246 | ··</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_integer</span><span·class="p"·data-group-id="4974416773-58">(</span><span·class="n">Port</span><span·class="p"·data-group-id="4974416773-58">)</span><span·class="w">·</span><span·class="nf">andalso</span><span·class="w">·</span><span·class="p"·data-group-id="4974416773-59">(</span><span·class="n">Por[·...·truncated·by·diffoscope;·len:·150,·SHA:·58cd1dab0157e3a7347ca2989a10381c37bf4592e30c0b76491b5519995c57eb·...·]-59">)</span><span·class="w">·</span><span·class="ow">andalso</span><span·class="w"> |
| 247 | ·······</span><span·class="nf">is_tuple</span><span·class="p"·data-group-id="9 | 247 | ·······</span><span·class="nf">is_tuple</span><span·class="p"·data-group-id="4974416773-60">(</span><span·class="n">Addr</span><span·class="p"·data-group-id="4974416773-60">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 248 | ····</span><span·class="n">Family</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">which_family</span><span·class="p"·data-group-id="9 | 248 | ····</span><span·class="n">Family</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">which_family</span><span·class="p"·data-group-id="4974416773-61">(</span><span·class="n">Addr</span><span·class="p"·data-group-id="4974416773-61">)</span><span·class="p">,</span><span·class="w"> |
| 249 | ····</span><span·class="n">SockAddr</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="9 | 249 | ····</span><span·class="n">SockAddr</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4974416773-62">#{</span><span·class="ss">family</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="n">Family</span><span·class="p">,</span><span·class="w"> |
| 250 | » » ·</span><span·class="ss">addr</span><span·class="w">···</span><span·class="p">=></span><span·class="w">·</span><span·class="n">Addr</span><span·class="p">,</span><span·class="w"> | 250 | » » ·</span><span·class="ss">addr</span><span·class="w">···</span><span·class="p">=></span><span·class="w">·</span><span·class="n">Addr</span><span·class="p">,</span><span·class="w"> |
| 251 | » » ·</span><span·class="ss">port</span><span·class="w">···</span><span·class="p">=></span><span·class="w">·</span><span·class="n">Port</span><span·class="p"·data-group-id="9 | 251 | » » ·</span><span·class="ss">port</span><span·class="w">···</span><span·class="p">=></span><span·class="w">·</span><span·class="n">Port</span><span·class="p"·data-group-id="4974416773-62">}</span><span·class="p">,</span><span·class="w"> |
| 252 | ····</span><span·class="nf">server</span><span·class="p"·data-group-id="9 | 252 | ····</span><span·class="nf">server</span><span·class="p"·data-group-id="4974416773-63">(</span><span·class="n">SockAddr</span><span·class="p"·data-group-id="4974416773-63">)</span><span·class="p">.</span><span·class="w"> |
| 253 | </span><span·class="c1">%%·---·Echo·Server·-·Acceptor·---</span><span·class="w"> | 253 | </span><span·class="c1">%%·---·Echo·Server·-·Acceptor·---</span><span·class="w"> |
| 254 | </span><span·class="nf">start_acceptor</span><span·class="p"·data-group-id="9 | 254 | </span><span·class="nf">start_acceptor</span><span·class="p"·data-group-id="4974416773-64">(</span><span·class="n">LSock</span><span·class="p"·data-group-id="4974416773-64">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 255 | ····</span><span·class="n">Self</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="9 | 255 | ····</span><span·class="n">Self</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="4974416773-65">(</span><span·class="p"·data-group-id="4974416773-65">)</span><span·class="p">,</span><span·class="w"> |
| 256 | ····</span><span·class="p"·data-group-id="9 | 256 | ····</span><span·class="p"·data-group-id="4974416773-66">{</span><span·class="n">Pid</span><span·class="p">,</span><span·class="w">·</span><span·class="n">MRef</span><span·class="p"·data-group-id="4974416773-66">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·[·...·truncated·by·diffoscope;·len:·635,·SHA:·d629c57eb446c2ffc678e5cb4801225a5fe50cddeef8725f1ed4f409ec4053f1·...·]-67">)</span><span·class="p">,</span><span·class="w"> |
| 257 | ····</span><span·class="k">receive</span><span·class="w"> | 257 | ····</span><span·class="k">receive</span><span·class="w"> |
| 258 | » </span><span·class="p"·data-group-id="9 | 258 | » </span><span·class="p"·data-group-id="4974416773-70">{</span><span·class="ss">'DOWN'</span><span·class="p">,</span><span·class="w">·</span><span·class="n">MRef</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">process</span><span·class="p">,</span><span·class="w">·[·...·truncated·by·diffoscope;·len:·149,·SHA:·4edd41a4a9d85601933310be559df4e44aa626bd7e3f51a7ecb51a129d55bfab·...·]-70">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 259 | » ····</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">error</span><span·class="p"·data-group-id="9 | 259 | » ····</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">error</span><span·class="p"·data-group-id="4974416773-71">(</span><span·class="p"·data-group-id="4974416773-72">{</span><span·class="ss">failed_starting_acceptor</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Info</span><span·class="p"·data-group-id="4974416773-72">}</span><s[·...·truncated·by·diffoscope;·len:·39,·SHA:·9e0b763941f66f300c8ab26bf04b51c997f24df3b5c004d3aedb65f40e287f96·...·]-71">)</span><span·class="p">;</span><span·class="w"> |
| 260 | » </span><span·class="p"·data-group-id="9 | 260 | » </span><span·class="p"·data-group-id="4974416773-73">{</span><span·class="n">Pid</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">started</span><span·class="p"·data-group-id="4974416773-73">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 261 | » ····</span><span·class="c1">%%·Transfer·ownership</span><span·class="w"> | 261 | » ····</span><span·class="c1">%%·Transfer·ownership</span><span·class="w"> |
| 262 | » ····</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">setopt</span><span·class="p"·data-group-id="9 | 262 | » ····</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">setopt</span><span·class="p"·data-group-id="4974416773-74">(</span><span·class="n">LSock</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">otp</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">owner</span><span·class="p">,</span><span·class="w">·</span><span[·...·truncated·by·diffoscope;·len:·62,·SHA:·70fff774b42bb6e80c132a64e28ef430f11c2885071d2de9bc0ae79f07ad82b4·...·]-74">)</span><span·class="p">,</span><span·class="w"> |
| 263 | » ····</span><span·class="n">Pid</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="9 | 263 | » ····</span><span·class="n">Pid</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="4974416773-75">{</span><span·class="nf">self</span><span·class="p"·data-group-id="4974416773-76">(</span><span·class="p"·data-group-id="4974416773-76">)</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">continue</span><span·class="p"·d[·...·truncated·by·diffoscope;·len:·24,·SHA:·0fe6f31df93282fefbef32bf196c65aa313e3f61706b661b7090d37dec06f956·...·]-75">}</span><span·class="p">,</span><span·class="w"> |
| 264 | » ····</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">demonitor</span><span·class="p"·data-group-id="9 | 264 | » ····</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">demonitor</span><span·class="p"·data-group-id="4974416773-77">(</span><span·class="n">MRef</span><span·class="p"·data-group-id="4974416773-77">)</span><span·class="p">,</span><span·class="w"> |
| 265 | » ····</span><span·class="n">Pid</span><span·class="w"> | 265 | » ····</span><span·class="n">Pid</span><span·class="w"> |
| 266 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 266 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 267 | ···· | 267 | ···· |
| 268 | </span><span·class="nf">acceptor_init</span><span·class="p"·data-group-id="9 | 268 | </span><span·class="nf">acceptor_init</span><span·class="p"·data-group-id="4974416773-78">(</span><span·class="n">Parent</span><span·class="p">,</span><span·class="w">·</span><span·class="n">LSock</span><span·class="p"·data-group-id="4974416773-78">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 269 | ····</span><span·class="n">Parent</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="9 | 269 | ····</span><span·class="n">Parent</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="4974416773-79">{</span><span·class="nf">self</span><span·class="p"·data-group-id="4974416773-80">(</span><span·class="p"·data-group-id="4974416773-80">)</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">started</span><span·class="p"·da[·...·truncated·by·diffoscope;·len:·23,·SHA:·a976472ca58701eccf96e7a7777fc7deee48b2d1f70c673c6f3358f564fdce50·...·]-79">}</span><span·class="p">,</span><span·class="w"> |
| 270 | ····</span><span·class="k">receive</span><span·class="w"> | 270 | ····</span><span·class="k">receive</span><span·class="w"> |
| 271 | » </span><span·class="p"·data-group-id="9 | 271 | » </span><span·class="p"·data-group-id="4974416773-81">{</span><span·class="n">Parent</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">continue</span><span·class="p"·data-group-id="4974416773-81">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 272 | » ····</span><span·class="ss">ok</span><span·class="w"> | 272 | » ····</span><span·class="ss">ok</span><span·class="w"> |
| 273 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 273 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 274 | ····</span><span·class="nf">acceptor_loop</span><span·class="p"·data-group-id="9 | 274 | ····</span><span·class="nf">acceptor_loop</span><span·class="p"·data-group-id="4974416773-82">(</span><span·class="n">LSock</span><span·class="p"·data-group-id="4974416773-82">)</span><span·class="p">.</span><span·class="w"> |
| 275 | </span><span·class="nf">acceptor_loop</span><span·class="p"·data-group-id="9 | 275 | </span><span·class="nf">acceptor_loop</span><span·class="p"·data-group-id="4974416773-83">(</span><span·class="n">LSock</span><span·class="p"·data-group-id="4974416773-83">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 276 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">accept</span><span·class="p"·data-group-id="9 | 276 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">socket</span><span·class="p">:</span><span·class="nf">accept</span><span·class="p"·data-group-id="4974416773-84">(</span><span·class="n">LSock</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">infinity</span><span·class="p"·data-group-id="4974416773-84">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 277 | » </span><span·class="p"·data-group-id="9 | 277 | » </span><span·class="p"·data-group-id="4974416773-85">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ASock</span><span·class="p"·data-group-id="4974416773-85">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 278 | » ····</span><span·class="nf">start_handler</span><span·class="p"·data-group-id="9 | 278 | » ····</span><span·class="nf">start_handler</span><span·class="p"·data-group-id="4974416773-86">(</span><span·class="n">ASock</span><span·class="p"·data-group-id="4974416773-86">)</span><span·class="p">,</span><span·class="w"> |
| 279 | » ····</span><span·class="nf">acceptor_loop</span><span·class="p"·data-group-id="9 | 279 | » ····</span><span·class="nf">acceptor_loop</span><span·class="p"·data-group-id="4974416773-87">(</span><span·class="n">LSock</span><span·class="p"·data-group-id="4974416773-87">)</span><span·class="p">;</span><span·class="w"> |
| 280 | » </span><span·class="p"·data-group-id="9 | 280 | » </span><span·class="p"·data-group-id="4974416773-88">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="p"·data-group-id="4974416773-88">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 281 | » ····</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">error</span><span·class="p"·data-group-id="9 | 281 | » ····</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">error</span><span·class="p"·data-group-id="4974416773-89">(</span><span·class="p"·data-group-id="4974416773-90">{</span><span·class="ss">accept_failed</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="p"·data-group-id="4974416773-90">}</span><span·class[·...·truncated·by·diffoscope;·len:·30,·SHA:·51520772b79e83ddb2773ff86f92b91895df87356315fa7bf6633e017f6893e8·...·]-89">)</span><span·class="w"> |
| 282 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 282 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 283 | </span><span·class="c1">%%·---·Echo·Server·-·Handler·---</span><span·class="w"> | 283 | </span><span·class="c1">%%·---·Echo·Server·-·Handler·---</span><span·class="w"> |
| 284 | </span><span·class="nf">start_handler</span><span·class="p"·data-group-id="9 | 284 | </span><span·class="nf">start_handler</span><span·class="p"·data-group-id="4974416773-91">(</span><span·class="n">Sock</span><span·class="p"·data-group-id="4974416773-91">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 285 | ····</span><span·class="n">Self</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="9 | 285 | ····</span><span·class="n">Self</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="4974416773-92">(</span><span·class="p"·data-group-id="4974416773-92">)</span><span·class="p">,</span><span·class="w"> |
| 286 | ····</span><span·class="p"·data-group-id="9 | 286 | ····</span><span·class="p"·data-group-id="4974416773-93">{</span><span·class="n">Pid</span><span·class="p">,</span><span·class="w">·</span><span·class="n">MRef</span><span·class="p"·data-group-id="4974416773-93">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·[·...·truncated·by·diffoscope;·len:·633,·SHA:·98a1532ab6a10566f483f0a0f04b0402ea78e561b2f14eba5218501adc6fce95·...·]-94">)</span><span·class="p">,</span><span·class="w"> |
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| 142 | </h2> | 142 | </h2> |
| 143 | <p>All·tracing·is·done·within·a·trace·session.·Trace·sessions·can·be | 143 | <p>All·tracing·is·done·within·a·trace·session.·Trace·sessions·can·be |
| 144 | <a·href="#session_create/3">created</a>·and·<a·href="#session_destroy/1">destroyed</a> | 144 | <a·href="#session_create/3">created</a>·and·<a·href="#session_destroy/1">destroyed</a> |
| 145 | dynamically.·Each·session·has·its·own·tracer·that·will·receive·all·trace | 145 | dynamically.·Each·session·has·its·own·tracer·that·will·receive·all·trace |
| 146 | messages.·Several·sessions·can·exist·at·the·same·time·without·interfering·with | 146 | messages.·Several·sessions·can·exist·at·the·same·time·without·interfering·with |
| 147 | each·other.·When·a·trace·session·is·destroyed,·all·its·trace·settings·are | 147 | each·other.·When·a·trace·session·is·destroyed,·all·its·trace·settings·are |
| 148 | automatically·cleaned·up.</p><p><em>Example</em>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·Create·a·tracer·process·that·will·receive·the·trace·events</span><span·class="gp·unselectable"> | 148 | automatically·cleaned·up.</p><p><em>Example</em>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·Create·a·tracer·process·that·will·receive·the·trace·events</span><span·class="gp·unselectable"> |
| 149 | 1>·</span><span·class="n">Tracer</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">spawn</span><span·class="p"·data-group-id=" | 149 | 1>·</span><span·class="n">Tracer</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">spawn</span><span·class="p"·data-group-id="9622395040-1">(</span><span·class="k">fun</span><span·class="w">·</span><span·class="n">F</span><span·class="p"·data-group-id="9622395040-2">(</span><span·class="p"·data-group-id="9622395040-2">)</span><span·class="w">·</span><span·class="p">-></span><s[·...·truncated·by·diffoscope;·len:·945,·SHA:·e026543a16db6358e330c597ca513657b5de41da0a28824dbcd83b637ff66717·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 150 | </span><span·class="o"><</span><span·class="mf">0.91</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w"> | 150 | </span><span·class="o"><</span><span·class="mf">0.91</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w"> |
| 151 | </span><span·class="c1">%%·Create·a·session·using·the·Tracer</span><span·class="gp·unselectable"> | 151 | </span><span·class="c1">%%·Create·a·session·using·the·Tracer</span><span·class="gp·unselectable"> |
| 152 | 2>·</span><span·class="n">Session</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">trace</span><span·class="p">:</span><span·class="nf">session_create</span><span·class="p"·data-group-id=" | 152 | 2>·</span><span·class="n">Session</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">trace</span><span·class="p">:</span><span·class="nf">session_create</span><span·class="p"·data-group-id="9622395040-6">(</span><span·class="ss">my_session</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tracer</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9622395040-7">[</span><span·class="p"·data-g[·...·truncated·by·diffoscope;·len:·72,·SHA:·53c1ff92a3dd67b8d65e4a190747d589b1c0d574ee795ba5f29600419ea63635·...·]-6">)</span><span·class="p">.</span><span·class="w"> |
| 153 | </span><span·class="p"·data-group-id=" | 153 | </span><span·class="p"·data-group-id="9622395040-8">{</span><span·class="p">#</span><span·class="n">Ref</span><span·class="o"><</span><span·class="mf">0.1543805153</span><span·class="p">.</span><span·class="mf">1548353537.92331</span><span·class="o">></span><span·class="p">,</span><span·[·...·truncated·by·diffoscope;·len:·248,·SHA:·c41102c7a1769b4dcd25935f3ed38bb84d6c439ac863bdab7a297125f030c69d·...·]-8">}</span><span·class="w"> |
| 154 | </span><span·class="c1">%%·Setup·call·tracing·on·self()</span><span·class="gp·unselectable"> | 154 | </span><span·class="c1">%%·Setup·call·tracing·on·self()</span><span·class="gp·unselectable"> |
| 155 | 3>·</span><span·class="nc">trace</span><span·class="p">:</span><span·class="nf">process</span><span·class="p"·data-group-id=" | 155 | 3>·</span><span·class="nc">trace</span><span·class="p">:</span><span·class="nf">process</span><span·class="p"·data-group-id="9622395040-10">(</span><span·class="n">Session</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="9622395040-11">(</span><span·class="p"·data-group-id="9622395040-11">)</span><span·class="p">,</[·...·truncated·by·diffoscope;·len:·282,·SHA:·0702045ebc3f382882b5cb791e8f1baa8aea9603ec019f0a2e4b2865d322d6f3·...·]-10">)</span><span·class="p">.</span><span·class="w"> |
| 156 | </span><span·class="mi">1</span><span·class="w"> | 156 | </span><span·class="mi">1</span><span·class="w"> |
| 157 | </span><span·class="c1">%%·Setup·call·tracing·on·lists:seq/2</span><span·class="gp·unselectable"> | 157 | </span><span·class="c1">%%·Setup·call·tracing·on·lists:seq/2</span><span·class="gp·unselectable"> |
| 158 | 4>·</span><span·class="nc">trace</span><span·class="p">:</span><span·class="nf">function</span><span·class="p"·data-group-id=" | 158 | 4>·</span><span·class="nc">trace</span><span·class="p">:</span><span·class="nf">function</span><span·class="p"·data-group-id="9622395040-13">(</span><span·class="n">Session</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9622395040-14">{</span><span·class="ss">lists</span><span·class="p">,</span><span·class="ss">seq</span><span·class="p">,</sp[·...·truncated·by·diffoscope;·len:·435,·SHA:·d94a76823bb6cbf3cba788a6366d8cef00b3de42a916f786956f30c6f25607aa·...·]-13">)</span><span·class="p">.</span><span·class="w"> |
| 159 | </span><span·class="mi">1</span><span·class="w"> | 159 | </span><span·class="mi">1</span><span·class="w"> |
| 160 | </span><span·class="c1">%%·Call·the·traced·function</span><span·class="gp·unselectable"> | 160 | </span><span·class="c1">%%·Call·the·traced·function</span><span·class="gp·unselectable"> |
| 161 | 5>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">seq</span><span·class="p"·data-group-id=" | 161 | 5>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">seq</span><span·class="p"·data-group-id="9622395040-17">(</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">10</span><span·class="p"·data-group-id="9622395040-17">)</span><span·class="p">.</span><span·class="w"> |
| 162 | </span><span·class="p"·data-group-id=" | 162 | </span><span·class="p"·data-group-id="9622395040-18">{</span><span·class="nb">trace</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.89</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="ss">call</sp[·...·truncated·by·diffoscope;·len:·463,·SHA:·b3dfa749d7fe20e3e99d9700ff8eb3ccf186754c5dc177a8fcd4f390c9834885·...·]-18">}</span><span·class="w">·</span><span·class="c1">%·The·trace·message</span><span·class="w"> |
| 163 | </span><span·class="p"·data-group-id=" | 163 | </span><span·class="p"·data-group-id="9622395040-21">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">5</span><span·class=[·...·truncated·by·diffoscope;·len:·275,·SHA:·6836cac18190dc6a41fcf66603281cec00f3c43e4e5d4e394cbab621ae058788·...·]-21">]</span><span·class="w">·</span><span·class="c1">%·The·return·value</span><span·class="w"> |
| 164 | </span><span·class="c1">%%·Cleanup·the·trace·session</span><span·class="gp·unselectable"> | 164 | </span><span·class="c1">%%·Cleanup·the·trace·session</span><span·class="gp·unselectable"> |
| 165 | 6>·</span><span·class="nc">trace</span><span·class="p">:</span><span·class="nf">session_destroy</span><span·class="p"·data-group-id=" | 165 | 6>·</span><span·class="nc">trace</span><span·class="p">:</span><span·class="nf">session_destroy</span><span·class="p"·data-group-id="9622395040-22">(</span><span·class="n">Session</span><span·class="p"·data-group-id="9622395040-22">)</span><span·class="p">.</span><span·class="w"> |
| 166 | </span><span·class="ss">ok</span></code></pre><h2·id="module-node-local-tracing-only"·class="section-heading"> | 166 | </span><span·class="ss">ok</span></code></pre><h2·id="module-node-local-tracing-only"·class="section-heading"> |
| 167 | ··<a·href="#module-node-local-tracing-only"·class="hover-link"> | 167 | ··<a·href="#module-node-local-tracing-only"·class="hover-link"> |
| 168 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 168 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 169 | ··</a> | 169 | ··</a> |
| 170 | ··<span·class="text">Node·Local·Tracing·Only</span> | 170 | ··<span·class="text">Node·Local·Tracing·Only</span> |
| 171 | </h2> | 171 | </h2> |
| 172 | <p>The·functions·in·this·module·only·operates·on·the·local·node.·That·is,·both·the | 172 | <p>The·functions·in·this·module·only·operates·on·the·local·node.·That·is,·both·the |
| Offset 1284, 17 lines modified | Offset 1284, 17 lines modified | ||
| 1284 | <code·class="inline">undefined</code>·if·the·sender·is·not·known·(which·can·be·the·case·for·remote | 1284 | <code·class="inline">undefined</code>·if·the·sender·is·not·known·(which·can·be·the·case·for·remote |
| 1285 | senders).·<code·class="inline">Msg</code>·is·the·message·term.·The·pid·of·the·receiving·process·can·be | 1285 | senders).·<code·class="inline">Msg</code>·is·the·message·term.·The·pid·of·the·receiving·process·can·be |
| 1286 | accessed·with·the·guard·function·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#self/0"><code·class="inline">self/0</code></a>.·An·empty·list·is·the·same·as | 1286 | accessed·with·the·guard·function·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#self/0"><code·class="inline">self/0</code></a>.·An·empty·list·is·the·same·as |
| 1287 | <code·class="inline">true</code>.·For·more·information,·see·section | 1287 | <code·class="inline">true</code>.·For·more·information,·see·section |
| 1288 | <a·href="../../../../erts-15.2.3/doc/html/match_spec.html">Match·Specifications·in·Erlang</a>·in·the·User's·Guide | 1288 | <a·href="../../../../erts-15.2.3/doc/html/match_spec.html">Match·Specifications·in·Erlang</a>·in·the·User's·Guide |
| 1289 | for·the·ERTS·application.</p></li><li><p><strong><code·class="inline">true</code></strong>·-·Enable·tracing·for·all·received·messages·(to·<code·class="inline">'receive'</code>·traced | 1289 | for·the·ERTS·application.</p></li><li><p><strong><code·class="inline">true</code></strong>·-·Enable·tracing·for·all·received·messages·(to·<code·class="inline">'receive'</code>·traced |
| 1290 | processes).·Any·match·specification·is·removed.·<em>This·is·the·default</em>.</p></li><li><p><strong><code·class="inline">false</code></strong>·-·Disable·tracing·for·all·received·messages.·Any·match | 1290 | processes).·Any·match·specification·is·removed.·<em>This·is·the·default</em>.</p></li><li><p><strong><code·class="inline">false</code></strong>·-·Disable·tracing·for·all·received·messages.·Any·match |
| 1291 | specification·is·removed.</p></li></ul><p>Argument·<code·class="inline">FlagList</code>·must·be·<code·class="inline">[]</code>·for·receive·tracing.</p><p>The·return·value·is·always·<code·class="inline">1</code>.</p><p><em>Examples:</em></p><p>Only·trace·messages·from·a·specific·process·<code·class="inline">Pid</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">trace</span><span·class="p">:</span><span·class="nf">recv</span><span·class="p"·data-group-id=" | 1291 | specification·is·removed.</p></li></ul><p>Argument·<code·class="inline">FlagList</code>·must·be·<code·class="inline">[]</code>·for·receive·tracing.</p><p>The·return·value·is·always·<code·class="inline">1</code>.</p><p><em>Examples:</em></p><p>Only·trace·messages·from·a·specific·process·<code·class="inline">Pid</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">trace</span><span·class="p">:</span><span·class="nf">recv</span><span·class="p"·data-group-id="7212925922-1">(</span><span·class="n">Session</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7212925922-2">[</span><span·class="p"·data-group-id="7212925922-3">{</span><span·class="p"·data-group-id="7212925922-4">[</sp[·...·truncated·by·diffoscope;·len:·785,·SHA:·805baea5a8b64202dfc77760564f1449f14430240a371767b1ddc01f04d97a71·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 1292 | </span><span·class="mi">1</span></code></pre><p>Only·trace·messages·matching·<code·class="inline">{reply,·_}</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">trace</span><span·class="p">:</span><span·class="nf">recv</span><span·class="p"·data-group-id=" | 1292 | </span><span·class="mi">1</span></code></pre><p>Only·trace·messages·matching·<code·class="inline">{reply,·_}</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">trace</span><span·class="p">:</span><span·class="nf">recv</span><span·class="p"·data-group-id="2517844639-1">(</span><span·class="n">Session</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2517844639-2">[</span><span·class="p"·data-group-id="2517844639-3">{</span><span·class="p"·data-group-id="2517844639-4">[</sp[·...·truncated·by·diffoscope;·len:·953,·SHA:·e243f3a686694f321e146403ea4220fceede9148c33d6956fbac1a6ec7674e13·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 1293 | </span><span·class="mi">1</span></code></pre><p>Only·trace·messages·from·other·nodes:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">trace</span><span·class="p">:</span><span·class="nf">recv</span><span·class="p"·data-group-id=" | 1293 | </span><span·class="mi">1</span></code></pre><p>Only·trace·messages·from·other·nodes:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">trace</span><span·class="p">:</span><span·class="nf">recv</span><span·class="p"·data-group-id="0725949002-1">(</span><span·class="n">Session</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0725949002-2">[</span><span·class="p"·data-group-id="0725949002-3">{</span><span·class="p"·data-group-id="0725949002-4">[</sp[·...·truncated·by·diffoscope;·len:·1180,·SHA:·03b34f9151e94b2d252f4c4749f1ccbf7f5f9ea6879089f4ed871e7e423ce812·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 1294 | </span><span·class="mi">1</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>A·match·specification·for·<code·class="inline">'receive'</code>·trace·can·use·all·guard·and·body | 1294 | </span><span·class="mi">1</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>A·match·specification·for·<code·class="inline">'receive'</code>·trace·can·use·all·guard·and·body |
| 1295 | functions·except·<code·class="inline">caller</code>,·<code·class="inline">is_seq_trace</code>,·<code·class="inline">get_seq_token</code>,·<code·class="inline">set_seq_token</code>, | 1295 | functions·except·<code·class="inline">caller</code>,·<code·class="inline">is_seq_trace</code>,·<code·class="inline">get_seq_token</code>,·<code·class="inline">set_seq_token</code>, |
| 1296 | <code·class="inline">enable_trace</code>,·<code·class="inline">disable_trace</code>,·<code·class="inline">trace</code>,·<code·class="inline">silent</code>,·and·<code·class="inline">process_dump</code>.</p></section><p>Fails·by·raising·an·error·exception·with·an·error·reason·of:</p><ul><li><p><strong><code·class="inline">badarg</code></strong>·-·If·an·argument·is·invalid.</p></li><li><p><strong><code·class="inline">system_limit</code></strong>·-·If·a·match·specification·passed·as·argument·has·excessive | 1296 | <code·class="inline">enable_trace</code>,·<code·class="inline">disable_trace</code>,·<code·class="inline">trace</code>,·<code·class="inline">silent</code>,·and·<code·class="inline">process_dump</code>.</p></section><p>Fails·by·raising·an·error·exception·with·an·error·reason·of:</p><ul><li><p><strong><code·class="inline">badarg</code></strong>·-·If·an·argument·is·invalid.</p></li><li><p><strong><code·class="inline">system_limit</code></strong>·-·If·a·match·specification·passed·as·argument·has·excessive |
| 1297 | nesting·which·causes·scheduler·stack·exhaustion·for·the·scheduler·that·the | 1297 | nesting·which·causes·scheduler·stack·exhaustion·for·the·scheduler·that·the |
| 1298 | calling·process·is·executing·on. | 1298 | calling·process·is·executing·on. |
| 1299 | <a·href="../../../../erts-15.2.3/doc/html/erl_cmd.html#sched_thread_stack_size">Scheduler·stack·size</a>·can·be·configured | 1299 | <a·href="../../../../erts-15.2.3/doc/html/erl_cmd.html#sched_thread_stack_size">Scheduler·stack·size</a>·can·be·configured |
| 1300 | when·starting·the·runtime·system.</p></li></ul> | 1300 | when·starting·the·runtime·system.</p></li></ul> |
| Offset 1335, 18 lines modified | Offset 1335, 18 lines modified | ||
| 1335 | the·list·<code·class="inline">[Receiver,·Msg]</code>.·<code·class="inline">Receiver</code>·is·the·process·or·port·identity·of·the | 1335 | the·list·<code·class="inline">[Receiver,·Msg]</code>.·<code·class="inline">Receiver</code>·is·the·process·or·port·identity·of·the |
| 1336 | receiver·and·<code·class="inline">Msg</code>·is·the·message·term.·The·pid·of·the·sending·process·can·be | 1336 | receiver·and·<code·class="inline">Msg</code>·is·the·message·term.·The·pid·of·the·sending·process·can·be |
| 1337 | accessed·with·the·guard·function·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#self/0"><code·class="inline">self/0</code></a>.·An·empty·list·is·the·same·as | 1337 | accessed·with·the·guard·function·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#self/0"><code·class="inline">self/0</code></a>.·An·empty·list·is·the·same·as |
| 1338 | <code·class="inline">true</code>.·For·more·information,·see·section | 1338 | <code·class="inline">true</code>.·For·more·information,·see·section |
| 1339 | <a·href="../../../../erts-15.2.3/doc/html/match_spec.html">Match·Specifications·in·Erlang</a>·in·the·User's·Guide | 1339 | <a·href="../../../../erts-15.2.3/doc/html/match_spec.html">Match·Specifications·in·Erlang</a>·in·the·User's·Guide |
| 1340 | for·the·ERTS·application.</p></li><li><p><strong><code·class="inline">true</code></strong>·-·Enable·tracing·for·all·sent·messages·(from·<code·class="inline">send</code>·traced | 1340 | for·the·ERTS·application.</p></li><li><p><strong><code·class="inline">true</code></strong>·-·Enable·tracing·for·all·sent·messages·(from·<code·class="inline">send</code>·traced |
| 1341 | processes).·Any·match·specification·is·removed.</p></li><li><p><strong><code·class="inline">false</code></strong>·-·Disable·tracing·for·all·sent·messages.·Any·match·specification | 1341 | processes).·Any·match·specification·is·removed.</p></li><li><p><strong><code·class="inline">false</code></strong>·-·Disable·tracing·for·all·sent·messages.·Any·match·specification |
| 1342 | is·removed.</p></li></ul><p>Argument·<code·class="inline">FlagList</code>·must·be·<code·class="inline">[]</code>.</p><p>The·return·value·is·always·<code·class="inline">1</code>.</p><p><em>Examples:</em></p><p>Only·trace·messages·to·a·specific·process·<code·class="inline">Pid</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">trace</span><span·class="p">:</span><span·class="nf">send</span><span·class="p"·data-group-id=" | 1342 | is·removed.</p></li></ul><p>Argument·<code·class="inline">FlagList</code>·must·be·<code·class="inline">[]</code>.</p><p>The·return·value·is·always·<code·class="inline">1</code>.</p><p><em>Examples:</em></p><p>Only·trace·messages·to·a·specific·process·<code·class="inline">Pid</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">trace</span><span·class="p">:</span><span·class="nf">send</span><span·class="p"·data-group-id="3260116606-1">(</span><span·class="n">Session</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3260116606-2">[</span><span·class="p"·data-group-id="3260116606-3">{</span><span·class="p"·data-group-id="3260116606-4">[</sp[·...·truncated·by·diffoscope;·len:·726,·SHA:·3b7fbeff67bc2fc3f6993a0bdd24dc4cd6cd00df64b3d13e0306407536dd0fe2·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 1343 | </span><span·class="mi">1</span></code></pre><p>Only·trace·messages·matching·<code·class="inline">{reply,·_}</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">trace</span><span·class="p">:</span><span·class="nf">send</span><span·class="p"·data-group-id=" | 1343 | </span><span·class="mi">1</span></code></pre><p>Only·trace·messages·matching·<code·class="inline">{reply,·_}</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">trace</span><span·class="p">:</span><span·class="nf">send</span><span·class="p"·data-group-id="2131825673-1">(</span><span·class="n">Session</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2131825673-2">[</span><span·class="p"·data-group-id="2131825673-3">{</span><span·class="p"·data-group-id="2131825673-4">[</sp[·...·truncated·by·diffoscope;·len:·894,·SHA:·ea0deeb19d117016874e64ec6fb3c86eb3fd7a1fd69957224ed4e440179c1855·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 1344 | </span><span·class="mi">1</span></code></pre><p>Only·trace·messages·sent·to·the·sender·itself:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">trace</span><span·class="p">:</span><span·class="nf">send</span><span·class="p"·data-group-id="3193153520-1">(</span><span·class="n">Session</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3193153520-2">[</span><span·class="p"·data-group-id="3193153520-3">{</span><span·class="p"·data-group-id="3193153520-4">[</span><span·class="ss">'$1'</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'_'</span><span·class="p"·data-group-id="3193153520-4">]</span><span·class="p">,</span><span·class="p"·data-group-id="3193153520-5">[</span><span·class="p"·data-group-id="3193153520-6">{</span><span·class="ss">'=:='</span><span·class="p">,</span><span·class="ss">'$1'</span><span·class="p">,</span><span·class="p"·data-group-id="3193153520-7">{</span><span·class="ss">self</span><span·class="p"·data-group-id="3193153520-7">}</span><span·class="p"·data-group-id="3193153520-6">}</span><span·class="p"·data-group-id="3193153520-5">]</span><span·class="p">,</span><span·class="p"·data-group-id="3193153520-8">[</span><span·class="p"·data-group-id="3193153520-8">]</span><span·class="p"·data-group-id="3193153520-3">}</span><span·class="p"·data-group-id="3193153520-2">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3193153520-9">[</span><span·class="p"·data-group-id="3193153520-9">]</span><span·class="p"·data-group-id="3193153520-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 1345 | </span><span·class="mi">1</span></code></pre><p>Only·trace·messages·sent·to· | 1344 | </span><span·class="mi">1</span></code></pre><p>Only·trace·messages·sent·to·the·sender·itself:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">trace</span><span·class="p">:</span><span·class="nf">send</span><span·class="p"·data-group-id="1317890142-1">(</span><span·clas[·...·truncated·by·diffoscope;·len:·1320,·SHA:·7879c8cde4b27086fb0d9cd6b292ade607e2c9922f0acf7868f7537b98c3c255·...·]2-1">)</span><span·class="p">.</span><span·class="w"> |
| 1345 | </span><span·class="mi">1</span></code></pre><p>Only·trace·messages·sent·to·other·nodes:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">trace</span><span·class="p">:</span><span·class="nf">send</span><span·class="p"·data-group-id="7172743757-1">(</span><span·class="n">Session</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7172743757-2">[</span><span·class="p"·data-group-id="7172743757-3">{</span><span·class="p"·data-group-id="7172743757-4">[</span><span·class="ss">'$1'</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'_'</span><span·class="p"·data-group-id="7172743757-4">]</span><span·class="p">,</span><span·class="p"·data-group-id="7172743757-5">[</span><span·class="p"·data-group-id="7172743757-6">{</span><span·class="ss">'=/='</span><span·class="p">,</span><span·class="p"·data-group-id="7172743757-7">{</span><span·class="nb">node</span><span·class="p">,</span><span·class="ss">'$1'</span><span·class="p"·data-group-id="7172743757-7">}</span><span·class="p">,</span><span·class="p"·data-group-id="7172743757-8">{</span><span·class="nb">node</span><span·class="p"·data-group-id="7172743757-8">}</span><span·class="p"·data-group-id="7172743757-6">}</span><span·class="p"·data-group-id="7172743757-5">]</span><span·class="p">,</span><span·class="p"·data-group-id="7172743757-9">[</span><span·class="p"·data-group-id="7172743757-9">]</span><span·class="p"·data-group-id="7172743757-3">}</span><span·class="p"·data-group-id="7172743757-2">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7172743757-10">[</span><span·class="p"·data-group-id="7172743757-10">]</span><span·class="p"·data-group-id="7172743757-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 1346 | </span><span·class="mi">1</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>A·match·specification·for·<code·class="inline">send</code>·trace·can·use·all·guard·and·body·functions | 1346 | </span><span·class="mi">1</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>A·match·specification·for·<code·class="inline">send</code>·trace·can·use·all·guard·and·body·functions |
| 1347 | except·<code·class="inline">caller</code>.</p></section><p>Fails·by·raising·an·error·exception·with·an·error·reason·of:</p><ul><li><p><strong><code·class="inline">badarg</code></strong>·-·If·an·argument·is·invalid.</p></li><li><p><strong><code·class="inline">system_limit</code></strong>·-·If·a·match·specification·passed·as·argument·has·excessive | 1347 | except·<code·class="inline">caller</code>.</p></section><p>Fails·by·raising·an·error·exception·with·an·error·reason·of:</p><ul><li><p><strong><code·class="inline">badarg</code></strong>·-·If·an·argument·is·invalid.</p></li><li><p><strong><code·class="inline">system_limit</code></strong>·-·If·a·match·specification·passed·as·argument·has·excessive |
| 1348 | nesting·which·causes·scheduler·stack·exhaustion·for·the·scheduler·that·the | 1348 | nesting·which·causes·scheduler·stack·exhaustion·for·the·scheduler·that·the |
| 1349 | calling·process·is·executing·on. | 1349 | calling·process·is·executing·on. |
| 1350 | <a·href="../../../../erts-15.2.3/doc/html/erl_cmd.html#sched_thread_stack_size">Scheduler·stack·size</a>·can·be·configured | 1350 | <a·href="../../../../erts-15.2.3/doc/html/erl_cmd.html#sched_thread_stack_size">Scheduler·stack·size</a>·can·be·configured |
| 1351 | when·starting·the·runtime·system.</p></li></ul> | 1351 | when·starting·the·runtime·system.</p></li></ul> |
| 1352 | ··</section> | 1352 | ··</section> |
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| 22 | ····</h1> | 22 | ····</h1> |
| 23 | ······<section·id="moduledoc"·class="docstring"> | 23 | ······<section·id="moduledoc"·class="docstring"> |
| 24 | <p>Callback·module·for·users·of·the·Megaco·application</p><p>This·module·defines·the·callback·behaviour·of·Megaco·users.·A·megaco_user | 24 | <p>Callback·module·for·users·of·the·Megaco·application</p><p>This·module·defines·the·callback·behaviour·of·Megaco·users.·A·megaco_user |
| 25 | compliant·callback·module·must·export·the·following·functions:</p><ul><li><a·href="#c:handle_connect/3">handle_connect/2,3</a></li><li><a·href="#c:handle_disconnect/3">handle_disconnect/3</a></li><li><a·href="#c:handle_syntax_error/4">handle_syntax_error/3,4</a></li><li><a·href="#c:handle_message_error/4">handle_message_error/3,4</a></li><li><a·href="#c:handle_trans_request/4">handle_trans_request/3,4</a></li><li><a·href="#c:handle_trans_long_request/4">handle_trans_long_request/3,4</a></li><li><a·href="#c:handle_trans_reply/5">handle_trans_reply/4,5</a></li><li><a·href="#c:handle_trans_ack/5">handle_trans_ack/4,5</a></li><li><a·href="#c:handle_unexpected_trans/4">handle_unexpected_trans/3,4</a></li><li><a·href="#c:handle_trans_request_abort/5">handle_trans_request_abort/4,5</a></li><li><a·href="#c:handle_segment_reply/6">handle_segment_reply/5,6</a></li></ul><p>The·semantics·of·them·and·their·exact·signatures·are·explained·below.</p><p>The·<code·class="inline">user_args</code>·configuration·parameter·which·may·be·used·to·extend·the·argument | 25 | compliant·callback·module·must·export·the·following·functions:</p><ul><li><a·href="#c:handle_connect/3">handle_connect/2,3</a></li><li><a·href="#c:handle_disconnect/3">handle_disconnect/3</a></li><li><a·href="#c:handle_syntax_error/4">handle_syntax_error/3,4</a></li><li><a·href="#c:handle_message_error/4">handle_message_error/3,4</a></li><li><a·href="#c:handle_trans_request/4">handle_trans_request/3,4</a></li><li><a·href="#c:handle_trans_long_request/4">handle_trans_long_request/3,4</a></li><li><a·href="#c:handle_trans_reply/5">handle_trans_reply/4,5</a></li><li><a·href="#c:handle_trans_ack/5">handle_trans_ack/4,5</a></li><li><a·href="#c:handle_unexpected_trans/4">handle_unexpected_trans/3,4</a></li><li><a·href="#c:handle_trans_request_abort/5">handle_trans_request_abort/4,5</a></li><li><a·href="#c:handle_segment_reply/6">handle_segment_reply/5,6</a></li></ul><p>The·semantics·of·them·and·their·exact·signatures·are·explained·below.</p><p>The·<code·class="inline">user_args</code>·configuration·parameter·which·may·be·used·to·extend·the·argument |
| 26 | list·of·the·callback·functions.·For·example,·the·handle_connect·function·takes | 26 | list·of·the·callback·functions.·For·example,·the·handle_connect·function·takes |
| 27 | by·default·two·arguments:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nf">handle_connect</samp><samp·class="p"·data-group-id=" | 27 | by·default·two·arguments:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nf">handle_connect</samp><samp·class="p"·data-group-id="5142290626-1">(</samp><samp·class="n">Handle</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Version</samp><samp·class="p"·data-group-id="5142290626-1">)</samp></code></pre><p>but·if·the·<code·class="inline">user_args</code>·parameter·is·set·to·a·longer·list,·such·as |
| 28 | <code·class="inline">[SomePid,SomeTableRef]</code>,·the·callback·function·is·expected·to·have·these·(in | 28 | <code·class="inline">[SomePid,SomeTableRef]</code>,·the·callback·function·is·expected·to·have·these·(in |
| 29 | this·case·two)·extra·arguments·last·in·the·argument·list:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nf">handle_connect</samp><samp·class="p"·data-group-id="2 | 29 | this·case·two)·extra·arguments·last·in·the·argument·list:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nf">handle_connect</samp><samp·class="p"·data-group-id="9212712122-1">(</samp><samp·class="n">Handle</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Version</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">SomePid</samp><samp·class="p">,</samp><samp·class="w">·</samp><[·...·truncated·by·diffoscope;·len:·75,·SHA:·d874c121b69bf488e4a5c4bee2d4093b0152986e15915eed753a08dfa89f736d·...·]-1">)</samp></code></pre><p><a·href=""·id="extra_argument"></a></p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Must·of·the·functions·below·has·an·optional·<code·class="inline">Extra</code>·argument·(e.g. |
| 30 | <a·href="#c:handle_unexpected_trans/4">handle_unexpected_trans/4</a>).·The·functions | 30 | <a·href="#c:handle_unexpected_trans/4">handle_unexpected_trans/4</a>).·The·functions |
| 31 | which·takes·this·argument·will·be·called·if·and·only·if·one·of·the·functions | 31 | which·takes·this·argument·will·be·called·if·and·only·if·one·of·the·functions |
| 32 | <a·href="megaco.xhtml#receive_message/5"><code·class="inline">receive_message/5</code></a>·or | 32 | <a·href="megaco.xhtml#receive_message/5"><code·class="inline">receive_message/5</code></a>·or |
| 33 | <a·href="megaco.xhtml#process_received_message/5"><code·class="inline">process_received_message/5</code></a>·was·called | 33 | <a·href="megaco.xhtml#process_received_message/5"><code·class="inline">process_received_message/5</code></a>·was·called |
| 34 | with·the·<code·class="inline">Extra</code>·argument·different·than·<code·class="inline">ignore_extra</code>.</p></section><h2·id="module-data-types"·class="section-heading"> | 34 | with·the·<code·class="inline">Extra</code>·argument·different·than·<code·class="inline">ignore_extra</code>.</p></section><h2·id="module-data-types"·class="section-heading"> |
| 35 | ··<a·href="#module-data-types"·class="hover-link"> | 35 | ··<a·href="#module-data-types"·class="hover-link"> |
| 36 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 36 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 37 | ··</a> | 37 | ··</a> |
| 38 | ··<span·class="text">DATA·TYPES</span> | 38 | ··<span·class="text">DATA·TYPES</span> |
| 39 | </h2> | 39 | </h2> |
| 40 | <pre><code·class="makeup·erlang"·translate="no"><samp·class="nf">action_request</samp><samp·class="p"·data-group-id=" | 40 | <pre><code·class="makeup·erlang"·translate="no"><samp·class="nf">action_request</samp><samp·class="p"·data-group-id="0719805796-1">(</samp><samp·class="p"·data-group-id="0719805796-1">)</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="o">#</samp><samp·class="ss">'ActionRequest'</samp><samp·class="p"·data-group-id="0719805[·...·truncated·by·diffoscope;·len:·56,·SHA:·22e0bc9eef97fae3317f8a3fe6fb01254ad5f6770d3d9ab0b8eb83dce0f3562f·...·]-2">}</samp><samp·class="w"> |
| 41 | </samp><samp·class="nf">action_reply</samp><samp·class="p"·data-group-id=" | 41 | </samp><samp·class="nf">action_reply</samp><samp·class="p"·data-group-id="0719805796-3">(</samp><samp·class="p"·data-group-id="0719805796-3">)</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="o">#</samp><samp·class="ss">'ActionReply'</samp><samp·class="p"·data-group-id="071980579[·...·truncated·by·diffoscope;·len:·54,·SHA:·bf2d8be81c7a382f227872f24ab2ae8057a95a4861d5b8e5c4ed0a3198952684·...·]-4">}</samp><samp·class="w"> |
| 42 | </samp><samp·class="nf">error_desc</samp><samp·class="p"·data-group-id=" | 42 | </samp><samp·class="nf">error_desc</samp><samp·class="p"·data-group-id="0719805796-5">(</samp><samp·class="p"·data-group-id="0719805796-5">)</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="o">#</samp><samp·class="ss">'ErrorDescriptor'</samp><samp·class="p"·data-group-id="07198[·...·truncated·by·diffoscope;·len:·58,·SHA:·fa151a5daf09d15e9c726ad963756401ac8f0d2aeda82766ff9ecf5d19b46cc5·...·]-6">}</samp><samp·class="w"> |
| 43 | </samp><samp·class="nf">segment_no</samp><samp·class="p"·data-group-id=" | 43 | </samp><samp·class="nf">segment_no</samp><samp·class="p"·data-group-id="0719805796-7">(</samp><samp·class="p"·data-group-id="0719805796-7">)</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="nf">integer</samp><samp·class="p"·data-group-id="0719805796-8">(</samp><samp·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·462,·SHA:·9a5aab3418d5c5709af591dd77dda8b626370fd6c2dd3577d84c78c360ee27d0·...·]-2">}</samp></code></pre><p>The·record·initially·returned·by·<code·class="inline">megaco:connect/4,5</code>.·It·identifies·a·"virtual" |
| 44 | connection·and·may·be·reused·after·a·reconnect·(disconnect·+·connect).</p><pre><code·class="text">protocol_version()·=·integer()</code></pre><p>Is·the·actual·protocol·version.·In·most·cases·the·protocol·version·is·retrieved | 44 | connection·and·may·be·reused·after·a·reconnect·(disconnect·+·connect).</p><pre><code·class="text">protocol_version()·=·integer()</code></pre><p>Is·the·actual·protocol·version.·In·most·cases·the·protocol·version·is·retrieved |
| 45 | from·the·processed·message,·but·there·are·exceptions:</p><ul><li>When·<code·class="inline">handle_connect/2,3</code>·is·triggered·by·an·explicit·call·to | 45 | from·the·processed·message,·but·there·are·exceptions:</p><ul><li>When·<code·class="inline">handle_connect/2,3</code>·is·triggered·by·an·explicit·call·to |
| 46 | <code·class="inline">megaco:connect/4,5</code>.</li><li><a·href="#c:handle_disconnect/3"><code·class="inline">handle_disconnect/3</code></a></li><li><a·href="#c:handle_syntax_error/3"><code·class="inline">handle_syntax_error/3</code></a></li></ul><p>In·these·cases,·the·ProtocolVersion·default·version·is·obtained·from·the·static | 46 | <code·class="inline">megaco:connect/4,5</code>.</li><li><a·href="#c:handle_disconnect/3"><code·class="inline">handle_disconnect/3</code></a></li><li><a·href="#c:handle_syntax_error/3"><code·class="inline">handle_syntax_error/3</code></a></li></ul><p>In·these·cases,·the·ProtocolVersion·default·version·is·obtained·from·the·static |
| 47 | connection·configuration:</p><ul><li><code·class="inline">megaco:conn_info(ConnHandle,·protocol_version)</code>.</li></ul> | 47 | connection·configuration:</p><ul><li><code·class="inline">megaco:conn_info(ConnHandle,·protocol_version)</code>.</li></ul> |
| 48 | ······</section> | 48 | ······</section> |
| Offset 50, 18 lines modified | Offset 50, 18 lines modified | ||
| 50 | synchronously·for·a·reply.</p><p>After·this·initial·service·change·message·the·connection·between·the·MG·and·MGC | 50 | synchronously·for·a·reply.</p><p>After·this·initial·service·change·message·the·connection·between·the·MG·and·MGC |
| 51 | is·fully·established·and·supervised.</p><p>Assuming·that·the·MGC·is·started·on·the·local·host,·four·different·MG's,·using | 51 | is·fully·established·and·supervised.</p><p>Assuming·that·the·MGC·is·started·on·the·local·host,·four·different·MG's,·using |
| 52 | text·over·TCP/IP,·binary·over·TCP/IP,·text·over·UDP/IP·and·binary·over·UDP/IP | 52 | text·over·TCP/IP,·binary·over·TCP/IP,·text·over·UDP/IP·and·binary·over·UDP/IP |
| 53 | may·be·started·on·the·same·Erlang·node·with:</p><pre><code·class="text">······cd·megaco/examples/simple | 53 | may·be·started·on·the·same·Erlang·node·with:</p><pre><code·class="text">······cd·megaco/examples/simple |
| 54 | ······erl·-pa·../../../megaco/ebin·-s·megaco_filter·-s·megaco | 54 | ······erl·-pa·../../../megaco/ebin·-s·megaco_filter·-s·megaco |
| 55 | ······megaco_simple_mg:start().</code></pre><p>or·simply·'gmake·mg'.</p><p>If·you·"only"·want·to·start·a·single·MG·which·tries·to·connect·an·MG·on·a·host | 55 | ······megaco_simple_mg:start().</code></pre><p>or·simply·'gmake·mg'.</p><p>If·you·"only"·want·to·start·a·single·MG·which·tries·to·connect·an·MG·on·a·host |
| 56 | named·"baidarka",·you·may·use·one·of·these·functions·(instead·of·the | 56 | named·"baidarka",·you·may·use·one·of·these·functions·(instead·of·the |
| 57 | megaco_simple_mg:start/0·above):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">······</span><span·class="nc">megaco_simple_mg</span><span·class="p">:</span><span·class="nf">start_tcp_text</span><span·class="p"·data-group-id=" | 57 | megaco_simple_mg:start/0·above):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">······</span><span·class="nc">megaco_simple_mg</span><span·class="p">:</span><span·class="nf">start_tcp_text</span><span·class="p"·data-group-id="0386219515-1">(</span><span·class="s">"baidarka"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0386219515-2">[</span><span·class="p"·data-group-id="0386219515-2">]</span><span·class="p"·data-group-id="038621[·...·truncated·by·diffoscope;·len:·3,·SHA:·8a8b2d66735ed03d0841027e42d38806eedd8e5bd5da54270f958a55d509091f·...·]5-1">)</span><span·class="p">.</span><span·class="w"> |
| 58 | ······</span><span·class="nc">megaco_simple_mg</span><span·class="p">:</span><span·class="nf">start_tcp_binary</span><span·class="p"·data-group-id=" | 58 | ······</span><span·class="nc">megaco_simple_mg</span><span·class="p">:</span><span·class="nf">start_tcp_binary</span><span·class="p"·data-group-id="0386219515-3">(</span><span·class="s">"baidarka"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0386219515-4">[</span><span·class="p"·data-group-id="0386219515-4">]</span><span·class="p"·data-group-id="038621[·...·truncated·by·diffoscope;·len:·3,·SHA:·8a8b2d66735ed03d0841027e42d38806eedd8e5bd5da54270f958a55d509091f·...·]5-3">)</span><span·class="p">.</span><span·class="w"> |
| 59 | ······</span><span·class="nc">megaco_simple_mg</span><span·class="p">:</span><span·class="nf">start_udp_text</span><span·class="p"·data-group-id=" | 59 | ······</span><span·class="nc">megaco_simple_mg</span><span·class="p">:</span><span·class="nf">start_udp_text</span><span·class="p"·data-group-id="0386219515-5">(</span><span·class="s">"baidarka"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0386219515-6">[</span><span·class="p"·data-group-id="0386219515-6">]</span><span·class="p"·data-group-id="038621[·...·truncated·by·diffoscope;·len:·3,·SHA:·8a8b2d66735ed03d0841027e42d38806eedd8e5bd5da54270f958a55d509091f·...·]5-5">)</span><span·class="p">.</span><span·class="w"> |
| 60 | ······</span><span·class="nc">megaco_simple_mg</span><span·class="p">:</span><span·class="nf">start_udp_binary</span><span·class="p"·data-group-id=" | 60 | ······</span><span·class="nc">megaco_simple_mg</span><span·class="p">:</span><span·class="nf">start_udp_binary</span><span·class="p"·data-group-id="0386219515-7">(</span><span·class="s">"baidarka"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0386219515-8">[</span><span·class="p"·data-group-id="0386219515-8">]</span><span·class="p"·data-group-id="038621[·...·truncated·by·diffoscope;·len:·3,·SHA:·8a8b2d66735ed03d0841027e42d38806eedd8e5bd5da54270f958a55d509091f·...·]5-7">)</span><span·class="p">.</span></code></pre><p>The·-s·megaco_filter·option·to·erl·implies,·the·event·tracing·mechanism·to·be |
| 61 | enabled·and·an·interactive·sequence·chart·tool·to·be·started.·This·may·be·quite | 61 | enabled·and·an·interactive·sequence·chart·tool·to·be·started.·This·may·be·quite |
| 62 | useful·in·order·to·visualize·how·your·MG·interacts·with·the·Megaco/H.248 | 62 | useful·in·order·to·visualize·how·your·MG·interacts·with·the·Megaco/H.248 |
| 63 | protocol·stack.</p><p>The·event·traces·may·alternatively·be·directed·to·a·file·for·later·analyze.·By | 63 | protocol·stack.</p><p>The·event·traces·may·alternatively·be·directed·to·a·file·for·later·analyze.·By |
| 64 | default·the·event·tracing·is·disabled,·but·it·may·dynamically·be·enabled·without | 64 | default·the·event·tracing·is·disabled,·but·it·may·dynamically·be·enabled·without |
| 65 | any·need·for·re-compilation·of·the·code.</p> | 65 | any·need·for·re-compilation·of·the·code.</p> |
| 66 | ··</body> | 66 | ··</body> |
| Offset 2951, 15 lines modified | Offset 2951, 15 lines modified | ||
| 2951 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·print_version_info(Versions)·->·<a·href="#t:void/0">void</a>()·when·Versions·::·[VersionInfo],·VersionInfo·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:term/0">term</a>().</pre> | 2951 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·print_version_info(Versions)·->·<a·href="#t:void/0">void</a>()·when·Versions·::·[VersionInfo],·VersionInfo·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 2952 | ······</div> | 2952 | ······</div> |
| 2953 | <p>Utility·function·to·produce·a·formated·printout·of·the·versions·info·generated | 2953 | <p>Utility·function·to·produce·a·formated·printout·of·the·versions·info·generated |
| 2954 | by·the·<code·class="inline">versions1</code>·and·<code·class="inline">versions2</code>·functions.</p><p>The·function·print_version_info/0·uses·the·result·of·function·version1/0·as | 2954 | by·the·<code·class="inline">versions1</code>·and·<code·class="inline">versions2</code>·functions.</p><p>The·function·print_version_info/0·uses·the·result·of·function·version1/0·as |
| 2955 | <code·class="inline">VersionInfo</code>.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="w">···········</samp><samp·class="p"·data-group-id=" | 2955 | <code·class="inline">VersionInfo</code>.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="w">···········</samp><samp·class="p"·data-group-id="1894566834-1">{</samp><samp·class="ss">ok</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">V</samp><samp·class="p"·data-group-id="1894566834-1">}</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class[·...·truncated·by·diffoscope;·len:·441,·SHA:·85a9afdd9645ec7a0055d8abb227a9deca688e049a310d751a15a13d2f3bbaa4·...·]-3">)</samp><samp·class="p">.</samp></code></pre> |
| 2956 | ··</section> | 2956 | ··</section> |
| 2957 | </section> | 2957 | </section> |
| 2958 | <section·class="detail"·id="process_received_message/4"> | 2958 | <section·class="detail"·id="process_received_message/4"> |
| 2959 | ··<div·class="detail-header"> | 2959 | ··<div·class="detail-header"> |
| 2960 | ····<a·href="#process_received_message/4"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 2960 | ····<a·href="#process_received_message/4"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 2961 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 2961 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 3072, 15 lines modified | Offset 3072, 15 lines modified | ||
| 3072 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·print_version_info(Versions)·->·<a·href="#t:void/0">void</a>()·when·Versions·::·[VersionInfo],·VersionInfo·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> | 3072 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·print_version_info(Versions)·->·<a·href="#t:void/0">void</a>()·when·Versions·::·[VersionInfo],·VersionInfo·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 3073 | ······</div> | 3073 | ······</div> |
| 3074 | <p>Utility·function·to·produce·a·formated·printout·of·the·versions·info·generated | 3074 | <p>Utility·function·to·produce·a·formated·printout·of·the·versions·info·generated |
| 3075 | by·the·<code·class="inline">versions1</code>·and·<code·class="inline">versions2</code>·functions.</p><p>The·function·print_version_info/0·uses·the·result·of·function·version1/0·as | 3075 | by·the·<code·class="inline">versions1</code>·and·<code·class="inline">versions2</code>·functions.</p><p>The·function·print_version_info/0·uses·the·result·of·function·version1/0·as |
| 3076 | <code·class="inline">VersionInfo</code>.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">···········</span><span·class="p"·data-group-id=" | 3076 | <code·class="inline">VersionInfo</code>.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">···········</span><span·class="p"·data-group-id="2385985065-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">V</span><span·class="p"·data-group-id="2385985065-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class[·...·truncated·by·diffoscope;·len:·441,·SHA:·f0692fa663b3df442211c5c91258fc9fc690b4e5def1490bc5222d82c2e45135·...·]-3">)</span><span·class="p">.</span></code></pre> |
| 3077 | ··</section> | 3077 | ··</section> |
| 3078 | </section> | 3078 | </section> |
| 3079 | <section·class="detail"·id="process_received_message/4"> | 3079 | <section·class="detail"·id="process_received_message/4"> |
| 3080 | ··<div·class="detail-header"> | 3080 | ··<div·class="detail-header"> |
| 3081 | ····<a·href="#process_received_message/4"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 3081 | ····<a·href="#process_received_message/4"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 3082 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 3082 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 168, 20 lines modified | Offset 168, 20 lines modified | ||
| 168 | file·(see·below·for·more·info).·The·messages·in·this·file·is·encoded·with·just | 168 | file·(see·below·for·more·info).·The·messages·in·this·file·is·encoded·with·just |
| 169 | one·codec.·During·measurement·initiation,·the·messages·are·read·and·then | 169 | one·codec.·During·measurement·initiation,·the·messages·are·read·and·then |
| 170 | transformed·to·all·codec·formats·used·in·the·measurement.</p><p>The·message·transformation·is·done·by·the·transformation·module.·It·is·used·to | 170 | transformed·to·all·codec·formats·used·in·the·measurement.</p><p>The·message·transformation·is·done·by·the·transformation·module.·It·is·used·to |
| 171 | transform·a·set·of·messages·encoded·with·one·codec·into·the·other·base·codec's.</p><h4>Measurement(s)</h4><p>There·are·two·different·measurement·tools:</p><ul><li><p><em>meas</em>:</p><p>Used·to·perform·codec·measurements.·That·is,·to·see·what·kind·of·performance | 171 | transform·a·set·of·messages·encoded·with·one·codec·into·the·other·base·codec's.</p><h4>Measurement(s)</h4><p>There·are·two·different·measurement·tools:</p><ul><li><p><em>meas</em>:</p><p>Used·to·perform·codec·measurements.·That·is,·to·see·what·kind·of·performance |
| 172 | can·be·expected·by·the·different·codecs·provided·by·the·megaco·application.</p><p>The·measurement·is·done·by·iterating·over·the·decode/encode·function·for | 172 | can·be·expected·by·the·different·codecs·provided·by·the·megaco·application.</p><p>The·measurement·is·done·by·iterating·over·the·decode/encode·function·for |
| 173 | approx·2·seconds·per·message·and·counting·the·number·of·decodes/encodes.</p><p>Is·best·run·by·modifying·the·meas.sh.skel·skeleton·script·provided·by·the | 173 | approx·2·seconds·per·message·and·counting·the·number·of·decodes/encodes.</p><p>Is·best·run·by·modifying·the·meas.sh.skel·skeleton·script·provided·by·the |
| 174 | tool.</p><p>To·run·it·manually·do·the·following:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">········</span><span·class="c1">%·erl·-pa·<path-megaco-ebin-dir>·-pa·<path-to-meas-module-dir></span><span·class="w"> | 174 | tool.</p><p>To·run·it·manually·do·the·following:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">········</span><span·class="c1">%·erl·-pa·<path-megaco-ebin-dir>·-pa·<path-to-meas-module-dir></span><span·class="w"> |
| 175 | ········</span><span·class="n">Erlang</span><span·class="w">·</span><span·class="p"·data-group-id=" | 175 | ········</span><span·class="n">Erlang</span><span·class="w">·</span><span·class="p"·data-group-id="6196360478-1">(</span><span·class="n">BEAM</span><span·class="p"·data-group-id="6196360478-1">)</span><span·class="w">·</span><span·class="ss">emulator</span><span·class="w">·</span><span·class="ss">version</span><span·class="w">·</span><span·class="mf">5.[·...·truncated·by·diffoscope;·len:·156,·SHA:·800400d9251aaa3d96ebec362b31ee8b8b12483802f111a53cded901c50424d7·...·]-2">]</span><span·class="w"> |
| 176 | ········</span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V12</span><span·class="p">.</span><span·class="mi">2</span><span·class="w">··</span><span·class="p"·data-group-id=" | 176 | ········</span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V12</span><span·class="p">.</span><span·class="mi">2</span><span·class="w">··</span><span·class="p"·data-group-id="6196360478-3">(</span><span·class="ss">abort</span><span·class="w">·</span><span·class="ss">with</span><span·class="w">·</span><span·class="err">^</span><span·class="n">G</span><span·class="p"·data-group-id="6196360478-3">)</span><span·class="w"> |
| 177 | ········</span><span·class="mi">1</span><span·class="o">></span><span·class="w">·</span><span·class="nc">megaco_codec_meas</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 177 | ········</span><span·class="mi">1</span><span·class="o">></span><span·class="w">·</span><span·class="nc">megaco_codec_meas</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="6196360478-4">(</span><span·class="p"·data-group-id="6196360478-4">)</span><span·class="p">.</span><span·class="w"> |
| 178 | ········</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 178 | ········</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 179 | ········</span><span·class="mi">2</span><span·class="o">></span><span·class="w">·</span><span·class="nf">halt</span><span·class="p"·data-group-id=" | 179 | ········</span><span·class="mi">2</span><span·class="o">></span><span·class="w">·</span><span·class="nf">halt</span><span·class="p"·data-group-id="6196360478-5">(</span><span·class="p"·data-group-id="6196360478-5">)</span><span·class="p">.</span></code></pre><p>or·to·make·it·even·easier,·assuming·a·measure·shall·be·done·on·all·the·codecs |
| 180 | (as·above):</p><pre><code·class="text">········%·erl·-noshell·-pa·<path-megaco-ebin-dir>·\\ | 180 | (as·above):</p><pre><code·class="text">········%·erl·-noshell·-pa·<path-megaco-ebin-dir>·\\ |
| 181 | ··············-pa·<path-to-meas-module-dir>·\\ | 181 | ··············-pa·<path-to-meas-module-dir>·\\ |
| 182 | ··············-s·megaco_codec_meas·-s·init·stop</code></pre><p>When·run·as·above·(this·will·take·some·time),·the·measurement·process·is·done | 182 | ··············-s·megaco_codec_meas·-s·init·stop</code></pre><p>When·run·as·above·(this·will·take·some·time),·the·measurement·process·is·done |
| 183 | as·follows:</p><pre><code·class="text">For·each·codec: | 183 | as·follows:</p><pre><code·class="text">For·each·codec: |
| 184 | ····For·each·message: | 184 | ····For·each·message: |
| 185 | ········Read·the·message·from·the·file | 185 | ········Read·the·message·from·the·file |
| 186 | ············Detect·message·version | 186 | ············Detect·message·version |
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| 195 | tool.</p><p>The·<em>mstone2</em>·is·similar·to·the·<em>mstone1</em>·tool,·but·in·this·case,·each·created | 195 | tool.</p><p>The·<em>mstone2</em>·is·similar·to·the·<em>mstone1</em>·tool,·but·in·this·case,·each·created |
| 196 | process·makes·only·<em>one</em>·run·through·the·messages·and·then·exits.·A·soon·as·a | 196 | process·makes·only·<em>one</em>·run·through·the·messages·and·then·exits.·A·soon·as·a |
| 197 | process·exits,·a·new·process·(with·the·same·config·and·messages)·is·created·to | 197 | process·exits,·a·new·process·(with·the·same·config·and·messages)·is·created·to |
| 198 | takes·its·place.·The·number·of·messages·processed·in·total·is·the·mstone2(1) | 198 | takes·its·place.·The·number·of·messages·processed·in·total·is·the·mstone2(1) |
| 199 | value.</p></li></ul><p>Both·these·tools·use·the·message·package·(time_test.msgs)·provided·with·the | 199 | value.</p></li></ul><p>Both·these·tools·use·the·message·package·(time_test.msgs)·provided·with·the |
| 200 | tool(s),·although·it·can·run·on·any·message·package·as·long·as·it·has·the·same | 200 | tool(s),·although·it·can·run·on·any·message·package·as·long·as·it·has·the·same |
| 201 | structure.</p><h4>Message·package·file</h4><p>This·is·simply·an·erlang·compatible·text-file·with·the·following·structure: | 201 | structure.</p><h4>Message·package·file</h4><p>This·is·simply·an·erlang·compatible·text-file·with·the·following·structure: |
| 202 | <code·class="inline">{codec_name(),·messages_list()}</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">codec_name</span><span·class="p"·data-group-id="6 | 202 | <code·class="inline">{codec_name(),·messages_list()}</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">codec_name</span><span·class="p"·data-group-id="6725363374-1">(</span><span·class="p"·data-group-id="6725363374-1">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">pretty</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·cl[·...·truncated·by·diffoscope;·len:·686,·SHA:·d860ab9999b10776ec96d247d830d559b79a32d5e8e433d642b9c80e578cfd19·...·]-2">)</span><span·class="w"> |
| 203 | </span><span·class="nf">messages_list</span><span·class="p"·data-group-id="6 | 203 | </span><span·class="nf">messages_list</span><span·class="p"·data-group-id="6725363374-3">(</span><span·class="p"·data-group-id="6725363374-3">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6725363374-4">[</span><span·class="p"·data-group-id="6725363374-5">{</span><spa[·...·truncated·by·diffoscope;·len:·417,·SHA:·5b3b53826121146685cd4d9ef26a2c985dafb7f2e3cf3783cb2728ff2167939c·...·]-4">]</span><span·class="w"> |
| 204 | </span><span·class="nf">message_name</span><span·class="p"·data-group-id="6518009881-8">(</span><span·class="p"·data-group-id="6518009881-8">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="6518009881-9">(</span><span·class="p"·data-group-id="6518009881-9">)</span><span·class="w"> | ||
| 205 | </span><span·class="nf">message</span><span·class="p"·data-group-id="6 | 204 | </span><span·class="nf">message_name</span><span·class="p"·data-group-id="6725363374-8">(</span><span·class="p"·data-group-id="6725363374-8">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="6725363[·...·truncated·by·diffoscope;·len:·84,·SHA:·d721c8d3a26c761ad596daaed78129567434eca920c1df83020a6698ba430cea·...·] |
| 205 | </span><span·class="nf">message</span><span·class="p"·data-group-id="6725363374-10">(</span><span·class="p"·data-group-id="6725363374-10">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">binary</span><span·class="p"·data-group-id="6725363374-11">(</span><span·class="p"·data-group-id="6725363374-11">)</span></code></pre><p>The·codec·name·is·the·name·of·the·codec·with·which·all·messages·in·the | ||
| 206 | <code·class="inline">message_list()</code>·has·been·encoded.</p><p>This·file·can·be·<code·class="inline">exported</code>·to·a·file·structure·by·calling·the | 206 | <code·class="inline">message_list()</code>·has·been·encoded.</p><p>This·file·can·be·<code·class="inline">exported</code>·to·a·file·structure·by·calling·the |
| 207 | <a·href="megaco_codec_transform.html#export_messages">export_messages</a>·function.·This·can | 207 | <a·href="megaco_codec_transform.html#export_messages">export_messages</a>·function.·This·can |
| 208 | be·usefull·if·a·measurement·shall·be·done·with·an·external·tool.·Exporting·the | 208 | be·usefull·if·a·measurement·shall·be·done·with·an·external·tool.·Exporting·the |
| 209 | messages·creates·a·directory·tree·with·the·following·structure:</p><pre><code·class="text"><message·package>/pretty/<message-files> | 209 | messages·creates·a·directory·tree·with·the·following·structure:</p><pre><code·class="text"><message·package>/pretty/<message-files> |
| 210 | ··················compact/ | 210 | ··················compact/ |
| 211 | ··················per/ | 211 | ··················per/ |
| 212 | ··················ber/<message-files> | 212 | ··················ber/<message-files> |
| Offset 170, 67 lines modified | Offset 170, 67 lines modified | ||
| 170 | ···························} | 170 | ···························} |
| 171 | ···················} | 171 | ···················} |
| 172 | ···········} | 172 | ···········} |
| 173 | ···}</code></pre><p>Then·the·compact·version·without·indentation·and·with·short·keywords:</p><pre><code·class="text"> | 173 | ···}</code></pre><p>Then·the·compact·version·without·indentation·and·with·short·keywords:</p><pre><code·class="text"> |
| 174 | ···!/1·[124.124.124.222] | 174 | ···!/1·[124.124.124.222] |
| 175 | ···T=9998{C=-{SC=ROOT{SV{MT=RS,AD=55555,PF=ResGW/1,RE="901·Cold·Boot"}}}}</code></pre><p>And·the·programmers·view·of·the·same·message.·First·a·list·of·ActionRequest | 175 | ···T=9998{C=-{SC=ROOT{SV{MT=RS,AD=55555,PF=ResGW/1,RE="901·Cold·Boot"}}}}</code></pre><p>And·the·programmers·view·of·the·same·message.·First·a·list·of·ActionRequest |
| 176 | records·are·constructed·and·then·it·is·sent·with·one·of·the·send·functions·in | 176 | records·are·constructed·and·then·it·is·sent·with·one·of·the·send·functions·in |
| 177 | the·API:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··</span><span·class="n">Prof</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">'ServiceChangeProfile'</span><span·class="p"·data-group-id=" | 177 | the·API:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··</span><span·class="n">Prof</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">'ServiceChangeProfile'</span><span·class="p"·data-group-id="7281205708-1">{</span><span·class="ss">profileName</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"resgw"</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">version</span><span·cl[·...·truncated·by·diffoscope;·len:·130,·SHA:·411d48637f074994a44011edd3676b939aca293b650ebd4de5073b6bbab761f5·...·]-1">}</span><span·class="p">,</span><span·class="w"> |
| 178 | ··</span><span·class="n">Parm</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">'ServiceChangeParm'</span><span·class="p"·data-group-id=" | 178 | ··</span><span·class="n">Parm</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">'ServiceChangeParm'</span><span·class="p"·data-group-id="7281205708-2">{</span><span·class="ss">serviceChangeMethod</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">restart</span><span·class="p">,</span><span·class="w"> |
| 179 | ······························</span><span·class="ss">serviceChangeAddress</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 179 | ······························</span><span·class="ss">serviceChangeAddress</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7281205708-3">{</span><span·class="ss">portNumber</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">55555</span><span·class="p"·data-group-id="7281205708-3">}</span><span·class="p">,</span><span·class="w"> |
| 180 | ······························</span><span·class="ss">serviceChangeReason</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"901·Cold·Boot"</span><span·class="p">,</span><span·class="w"> | 180 | ······························</span><span·class="ss">serviceChangeReason</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"901·Cold·Boot"</span><span·class="p">,</span><span·class="w"> |
| 181 | ······························</span><span·class="ss">serviceChangeProfile</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Prof</span><span·class="p"·data-group-id=" | 181 | ······························</span><span·class="ss">serviceChangeProfile</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Prof</span><span·class="p"·data-group-id="7281205708-2">}</span><span·class="p">,</span><span·class="w"> |
| 182 | ··</span><span·class="n">Req</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">'ServiceChangeRequest'</span><span·class="p"·data-group-id=" | 182 | ··</span><span·class="n">Req</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">'ServiceChangeRequest'</span><span·class="p"·data-group-id="7281205708-4">{</span><span·class="ss">terminationID</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7281205708-5">[</span><span·class="o">?</span><span·class="ss">megaco_root_termination_id</spa[·...·truncated·by·diffoscope;·len:·43,·SHA:·8f31feca0c42f15b51265a5f20d1e56209bcc644b22a9d9529a4fe459949926f·...·]-5">]</span><span·class="p">,</span><span·class="w"> |
| 183 | ································</span><span·class="ss">serviceChangeParms</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Parm</span><span·class="p"·data-group-id=" | 183 | ································</span><span·class="ss">serviceChangeParms</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Parm</span><span·class="p"·data-group-id="7281205708-4">}</span><span·class="p">,</span><span·class="w"> |
| 184 | ··</span><span·class="n">Actions</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 184 | ··</span><span·class="n">Actions</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7281205708-6">[</span><span·class="o">#</span><span·class="ss">'ActionRequest'</span><span·class="p"·data-group-id="7281205708-7">{</span><span·class="ss">contextId</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">?</span><span·class="ss">megaco_null_context_id</span><span·class="p">,</span><span·class="w"> |
| 185 | ······························</span><span·class="ss">commandRequests</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 185 | ······························</span><span·class="ss">commandRequests</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7281205708-8">{</span><span·class="ss">serviceChangeReq</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Req</span><span·class="p"·data-group-id="7281205708-8">}</span><span·class="p"·data-group-id="7281205708-7">}</span><span·class="p[·...·truncated·by·diffoscope;·len:·27,·SHA:·c948e7384a2c409f7524bf16fc5e72302db6d4725dba130d104039c538615c82·...·]-6">]</span><span·class="p">,</span><span·class="w"> |
| 186 | ··</span><span·class="nc">megaco</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id=" | 186 | ··</span><span·class="nc">megaco</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id="7281205708-9">(</span><span·class="n">ConnHandle</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Actions</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Config</span><span·class="p"·data-group-id="7281205708-9">)[·...·truncated·by·diffoscope;·len:·217,·SHA:·ba5143e9d9701be556e53aca1bd23f43a2ee0aee04cd29811a1f63acbc169400·...·]-1">{</span><span·class="ss">'MegacoMessage'</span><span·class="p">,</span><span·class="w"> |
| 187 | ···</span><span·class="ss">asn1_NOVALUE</span><span·class="p">,</span><span·class="w"> | 187 | ···</span><span·class="ss">asn1_NOVALUE</span><span·class="p">,</span><span·class="w"> |
| 188 | ···</span><span·class="p"·data-group-id=" | 188 | ···</span><span·class="p"·data-group-id="5075940476-2">{</span><span·class="ss">'Message'</span><span·class="p">,</span><span·class="w"> |
| 189 | ····</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> | 189 | ····</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> |
| 190 | ····</span><span·class="p"·data-group-id=" | 190 | ····</span><span·class="p"·data-group-id="5075940476-3">{</span><span·class="ss">ip4Address</span><span·class="p">,</span><span·class="p"·data-group-id="5075940476-4">{</span><span·class="ss">'IP4Address'</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="[·...·truncated·by·diffoscope;·len:·433,·SHA:·1c9a551ac780294ecbe43a89c24b684f917b3c4fd15f965653e6962f986b0834·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 191 | ····</span><span·class="p"·data-group-id=" | 191 | ····</span><span·class="p"·data-group-id="5075940476-6">{</span><span·class="ss">transactions</span><span·class="p">,</span><span·class="w"> |
| 192 | ·····</span><span·class="p"·data-group-id=" | 192 | ·····</span><span·class="p"·data-group-id="5075940476-7">[</span><span·class="w"> |
| 193 | ······</span><span·class="p"·data-group-id=" | 193 | ······</span><span·class="p"·data-group-id="5075940476-8">{</span><span·class="ss">transactionRequest</span><span·class="p">,</span><span·class="w"> |
| 194 | ·······</span><span·class="p"·data-group-id=" | 194 | ·······</span><span·class="p"·data-group-id="5075940476-9">{</span><span·class="ss">'TransactionRequest'</span><span·class="p">,</span><span·class="w"> |
| 195 | ·········</span><span·class="mi">9998</span><span·class="p">,</span><span·class="w"> | 195 | ·········</span><span·class="mi">9998</span><span·class="p">,</span><span·class="w"> |
| 196 | ·········</span><span·class="p"·data-group-id=" | 196 | ·········</span><span·class="p"·data-group-id="5075940476-10">[</span><span·class="p"·data-group-id="5075940476-11">{</span><span·class="ss">'ActionRequest'</span><span·class="p">,</span><span·class="w"> |
| 197 | ···········</span><span·class="mi">0</span><span·class="p">,</span><span·class="w"> | 197 | ···········</span><span·class="mi">0</span><span·class="p">,</span><span·class="w"> |
| 198 | ···········</span><span·class="ss">asn1_NOVALUE</span><span·class="p">,</span><span·class="w"> | 198 | ···········</span><span·class="ss">asn1_NOVALUE</span><span·class="p">,</span><span·class="w"> |
| 199 | ···········</span><span·class="ss">asn1_NOVALUE</span><span·class="p">,</span><span·class="w"> | 199 | ···········</span><span·class="ss">asn1_NOVALUE</span><span·class="p">,</span><span·class="w"> |
| 200 | ···········</span><span·class="p"·data-group-id=" | 200 | ···········</span><span·class="p"·data-group-id="5075940476-12">[</span><span·class="w"> |
| 201 | ············</span><span·class="p"·data-group-id=" | 201 | ············</span><span·class="p"·data-group-id="5075940476-13">{</span><span·class="ss">'CommandRequest'</span><span·class="p">,</span><span·class="w"> |
| 202 | ·············</span><span·class="p"·data-group-id=" | 202 | ·············</span><span·class="p"·data-group-id="5075940476-14">{</span><span·class="ss">serviceChangeReq</span><span·class="p">,</span><span·class="w"> |
| 203 | ··············</span><span·class="p"·data-group-id=" | 203 | ··············</span><span·class="p"·data-group-id="5075940476-15">{</span><span·class="ss">'ServiceChangeRequest'</span><span·class="p">,</span><span·class="w"> |
| 204 | ···············</span><span·class="p"·data-group-id=" | 204 | ···············</span><span·class="p"·data-group-id="5075940476-16">[</span><span·class="w"> |
| 205 | ················</span><span·class="p"·data-group-id=" | 205 | ················</span><span·class="p"·data-group-id="5075940476-17">{</span><span·class="ss">megaco_term_id</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">false</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5075940476-18">[</span><span·class="s">[·...·truncated·by·diffoscope;·len:·172,·SHA:·1f038f3cd1ad5af594add48571a76f3dffc68f739da742f7ff90b0bfc1c63142·...·]-16">]</span><span·class="p">,</span><span·class="w"> |
| 206 | ················</span><span·class="p"·data-group-id=" | 206 | ················</span><span·class="p"·data-group-id="5075940476-19">{</span><span·class="ss">'ServiceChangeParm'</span><span·class="p">,</span><span·class="w"> |
| 207 | ·················</span><span·class="ss">restart</span><span·class="p">,</span><span·class="w"> | 207 | ·················</span><span·class="ss">restart</span><span·class="p">,</span><span·class="w"> |
| 208 | ·················</span><span·class="p"·data-group-id=" | 208 | ·················</span><span·class="p"·data-group-id="5075940476-20">{</span><span·class="ss">portNumber</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">55555</span><span·class="p"·data-group-id="5075940476-20">}</span><span·class="p">,</span><span·class="w"> |
| 209 | ·················</span><span·class="ss">asn1_NOVALUE</span><span·class="p">,</span><span·class="w"> | 209 | ·················</span><span·class="ss">asn1_NOVALUE</span><span·class="p">,</span><span·class="w"> |
| 210 | ·················</span><span·class="p"·data-group-id=" | 210 | ·················</span><span·class="p"·data-group-id="5075940476-21">{</span><span·class="ss">'ServiceChangeProfile'</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"resgw"</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">version</span><span·class=[·...·truncated·by·diffoscope;·len:·126,·SHA:·0b55b8f2b1861e524c37d51d175c9ccf51da4cc62f12c1938b10db74453ec4b6·...·]-21">}</span><span·class="p">,</span><span·class="w"> |
| 211 | ·················</span><span·class="s">"901·MG·Cold·Boot"</span><span·class="p">,</span><span·class="w"> | 211 | ·················</span><span·class="s">"901·MG·Cold·Boot"</span><span·class="p">,</span><span·class="w"> |
| 212 | ·················</span><span·class="ss">asn1_NOVALUE</span><span·class="p">,</span><span·class="w"> | 212 | ·················</span><span·class="ss">asn1_NOVALUE</span><span·class="p">,</span><span·class="w"> |
| 213 | ·················</span><span·class="ss">asn1_NOVALUE</span><span·class="p">,</span><span·class="w"> | 213 | ·················</span><span·class="ss">asn1_NOVALUE</span><span·class="p">,</span><span·class="w"> |
| 214 | ·················</span><span·class="ss">asn1_NOVALUE</span><span·class="w"> | 214 | ·················</span><span·class="ss">asn1_NOVALUE</span><span·class="w"> |
| 215 | ················</span><span·class="p"·data-group-id=" | 215 | ················</span><span·class="p"·data-group-id="5075940476-19">}</span><span·class="w"> |
| 216 | ··············</span><span·class="p"·data-group-id=" | 216 | ··············</span><span·class="p"·data-group-id="5075940476-15">}</span><span·class="w"> |
| 217 | ·············</span><span·class="p"·data-group-id=" | 217 | ·············</span><span·class="p"·data-group-id="5075940476-14">}</span><span·class="p">,</span><span·class="w"> |
| 218 | ·············</span><span·class="ss">asn1_NOVALUE</span><span·class="p">,</span><span·class="w"> | 218 | ·············</span><span·class="ss">asn1_NOVALUE</span><span·class="p">,</span><span·class="w"> |
| 219 | ·············</span><span·class="ss">asn1_NOVALUE</span><span·class="w"> | 219 | ·············</span><span·class="ss">asn1_NOVALUE</span><span·class="w"> |
| 220 | ············</span><span·class="p"·data-group-id=" | 220 | ············</span><span·class="p"·data-group-id="5075940476-13">}</span><span·class="w"> |
| 221 | ···········</span><span·class="p"·data-group-id=" | 221 | ···········</span><span·class="p"·data-group-id="5075940476-12">]</span><span·class="w"> |
| 222 | ··········</span><span·class="p"·data-group-id=" | 222 | ··········</span><span·class="p"·data-group-id="5075940476-11">}</span><span·class="w"> |
| 223 | ·········</span><span·class="p"·data-group-id=" | 223 | ·········</span><span·class="p"·data-group-id="5075940476-10">]</span><span·class="w"> |
| 224 | ·······</span><span·class="p"·data-group-id=" | 224 | ·······</span><span·class="p"·data-group-id="5075940476-9">}</span><span·class="w"> |
| 225 | ······</span><span·class="p"·data-group-id=" | 225 | ······</span><span·class="p"·data-group-id="5075940476-8">}</span><span·class="w"> |
| 226 | ·····</span><span·class="p"·data-group-id=" | 226 | ·····</span><span·class="p"·data-group-id="5075940476-7">]</span><span·class="w"> |
| 227 | ····</span><span·class="p"·data-group-id=" | 227 | ····</span><span·class="p"·data-group-id="5075940476-6">}</span><span·class="w"> |
| 228 | ···</span><span·class="p"·data-group-id=" | 228 | ···</span><span·class="p"·data-group-id="5075940476-2">}</span><span·class="w"> |
| 229 | ··</span><span·class="p"·data-group-id=" | 229 | ··</span><span·class="p"·data-group-id="5075940476-1">}</span></code></pre><p>The·following·encoding·modules·are·provided:</p><ul><li>megaco_pretty_text_encoder·-·encodes·messages·into·pretty·text·format,·decodes |
| 230 | both·pretty·as·well·as·compact·text.</li><li>megaco_compact_text_encoder·-·encodes·messages·into·compact·text·format, | 230 | both·pretty·as·well·as·compact·text.</li><li>megaco_compact_text_encoder·-·encodes·messages·into·compact·text·format, |
| 231 | decodes·both·pretty·as·well·as·compact·text.</li><li>megaco_binary_encoder·-·encode/decode·ASN.1·BER·messages.·This·encoder | 231 | decodes·both·pretty·as·well·as·compact·text.</li><li>megaco_binary_encoder·-·encode/decode·ASN.1·BER·messages.·This·encoder |
| 232 | implements·the·fastest·of·the·BER·encoders/decoders.·Recommended·binary·codec.</li><li>megaco_ber_encoder·-·encode/decode·ASN.1·BER·messages.</li><li>megaco_per_encoder·-·encode/decode·ASN.1·PER·messages.·N.B.·that·this·format | 232 | implements·the·fastest·of·the·BER·encoders/decoders.·Recommended·binary·codec.</li><li>megaco_ber_encoder·-·encode/decode·ASN.1·BER·messages.</li><li>megaco_per_encoder·-·encode/decode·ASN.1·PER·messages.·N.B.·that·this·format |
| 233 | is·not·included·in·the·Megaco·standard.</li><li>megaco_erl_dist_encoder·-·encodes·messages·into·Erlangs·distribution·format. | 233 | is·not·included·in·the·Megaco·standard.</li><li>megaco_erl_dist_encoder·-·encodes·messages·into·Erlangs·distribution·format. |
| 234 | It·is·rather·verbose·but·encoding·and·decoding·is·blinding·fast.·N.B.·that | 234 | It·is·rather·verbose·but·encoding·and·decoding·is·blinding·fast.·N.B.·that |
| 235 | this·format·is·not·included·in·the·Megaco·standard.</li></ul><p><a·href=""·id="erl_dist_config"></a></p><h2·id="configuration-of-erlang-distribution-encoding-module"·class="section-heading"> | 235 | this·format·is·not·included·in·the·Megaco·standard.</li></ul><p><a·href=""·id="erl_dist_config"></a></p><h2·id="configuration-of-erlang-distribution-encoding-module"·class="section-heading"> |
| 236 | ··<a·href="#configuration-of-erlang-distribution-encoding-module"·class="hover-link"> | 236 | ··<a·href="#configuration-of-erlang-distribution-encoding-module"·class="hover-link"> |
| Offset 155, 18 lines modified | Offset 155, 18 lines modified | ||
| 155 | synchronously·for·a·reply.</p><p>After·this·initial·service·change·message·the·connection·between·the·MG·and·MGC | 155 | synchronously·for·a·reply.</p><p>After·this·initial·service·change·message·the·connection·between·the·MG·and·MGC |
| 156 | is·fully·established·and·supervised.</p><p>Assuming·that·the·MGC·is·started·on·the·local·host,·four·different·MG's,·using | 156 | is·fully·established·and·supervised.</p><p>Assuming·that·the·MGC·is·started·on·the·local·host,·four·different·MG's,·using |
| 157 | text·over·TCP/IP,·binary·over·TCP/IP,·text·over·UDP/IP·and·binary·over·UDP/IP | 157 | text·over·TCP/IP,·binary·over·TCP/IP,·text·over·UDP/IP·and·binary·over·UDP/IP |
| 158 | may·be·started·on·the·same·Erlang·node·with:</p><pre><code·class="text">······cd·megaco/examples/simple | 158 | may·be·started·on·the·same·Erlang·node·with:</p><pre><code·class="text">······cd·megaco/examples/simple |
| 159 | ······erl·-pa·../../../megaco/ebin·-s·megaco_filter·-s·megaco | 159 | ······erl·-pa·../../../megaco/ebin·-s·megaco_filter·-s·megaco |
| 160 | ······megaco_simple_mg:start().</code></pre><p>or·simply·'gmake·mg'.</p><p>If·you·"only"·want·to·start·a·single·MG·which·tries·to·connect·an·MG·on·a·host | 160 | ······megaco_simple_mg:start().</code></pre><p>or·simply·'gmake·mg'.</p><p>If·you·"only"·want·to·start·a·single·MG·which·tries·to·connect·an·MG·on·a·host |
| 161 | named·"baidarka",·you·may·use·one·of·these·functions·(instead·of·the | 161 | named·"baidarka",·you·may·use·one·of·these·functions·(instead·of·the |
| 162 | megaco_simple_mg:start/0·above):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">······</span><span·class="nc">megaco_simple_mg</span><span·class="p">:</span><span·class="nf">start_tcp_text</span><span·class="p"·data-group-id=" | 162 | megaco_simple_mg:start/0·above):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">······</span><span·class="nc">megaco_simple_mg</span><span·class="p">:</span><span·class="nf">start_tcp_text</span><span·class="p"·data-group-id="8459153939-1">(</span><span·class="s">"baidarka"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8459153939-2">[</span><span·class="p"·data-group-id="8459153939-2">]</span><span·class="p"·data-group-id="845915[·...·truncated·by·diffoscope;·len:·3,·SHA:·99a0b871c9047c4f5555fcf062e0623174bae38746fece6efdf032d80fb2221a·...·]9-1">)</span><span·class="p">.</span><span·class="w"> |
| 163 | ······</span><span·class="nc">megaco_simple_mg</span><span·class="p">:</span><span·class="nf">start_tcp_binary</span><span·class="p"·data-group-id=" | 163 | ······</span><span·class="nc">megaco_simple_mg</span><span·class="p">:</span><span·class="nf">start_tcp_binary</span><span·class="p"·data-group-id="8459153939-3">(</span><span·class="s">"baidarka"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8459153939-4">[</span><span·class="p"·data-group-id="8459153939-4">]</span><span·class="p"·data-group-id="845915[·...·truncated·by·diffoscope;·len:·3,·SHA:·99a0b871c9047c4f5555fcf062e0623174bae38746fece6efdf032d80fb2221a·...·]9-3">)</span><span·class="p">.</span><span·class="w"> |
| 164 | ······</span><span·class="nc">megaco_simple_mg</span><span·class="p">:</span><span·class="nf">start_udp_text</span><span·class="p"·data-group-id=" | 164 | ······</span><span·class="nc">megaco_simple_mg</span><span·class="p">:</span><span·class="nf">start_udp_text</span><span·class="p"·data-group-id="8459153939-5">(</span><span·class="s">"baidarka"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8459153939-6">[</span><span·class="p"·data-group-id="8459153939-6">]</span><span·class="p"·data-group-id="845915[·...·truncated·by·diffoscope;·len:·3,·SHA:·99a0b871c9047c4f5555fcf062e0623174bae38746fece6efdf032d80fb2221a·...·]9-5">)</span><span·class="p">.</span><span·class="w"> |
| 165 | ······</span><span·class="nc">megaco_simple_mg</span><span·class="p">:</span><span·class="nf">start_udp_binary</span><span·class="p"·data-group-id=" | 165 | ······</span><span·class="nc">megaco_simple_mg</span><span·class="p">:</span><span·class="nf">start_udp_binary</span><span·class="p"·data-group-id="8459153939-7">(</span><span·class="s">"baidarka"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8459153939-8">[</span><span·class="p"·data-group-id="8459153939-8">]</span><span·class="p"·data-group-id="845915[·...·truncated·by·diffoscope;·len:·3,·SHA:·99a0b871c9047c4f5555fcf062e0623174bae38746fece6efdf032d80fb2221a·...·]9-7">)</span><span·class="p">.</span></code></pre><p>The·-s·megaco_filter·option·to·erl·implies,·the·event·tracing·mechanism·to·be |
| 166 | enabled·and·an·interactive·sequence·chart·tool·to·be·started.·This·may·be·quite | 166 | enabled·and·an·interactive·sequence·chart·tool·to·be·started.·This·may·be·quite |
| 167 | useful·in·order·to·visualize·how·your·MG·interacts·with·the·Megaco/H.248 | 167 | useful·in·order·to·visualize·how·your·MG·interacts·with·the·Megaco/H.248 |
| 168 | protocol·stack.</p><p>The·event·traces·may·alternatively·be·directed·to·a·file·for·later·analyze.·By | 168 | protocol·stack.</p><p>The·event·traces·may·alternatively·be·directed·to·a·file·for·later·analyze.·By |
| 169 | default·the·event·tracing·is·disabled,·but·it·may·dynamically·be·enabled·without | 169 | default·the·event·tracing·is·disabled,·but·it·may·dynamically·be·enabled·without |
| 170 | any·need·for·re-compilation·of·the·code.</p> | 170 | any·need·for·re-compilation·of·the·code.</p> |
| 171 | </div> | 171 | </div> |
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| 127 | ··</h1> | 127 | ··</h1> |
| 128 | ····<section·id="moduledoc"> | 128 | ····<section·id="moduledoc"> |
| 129 | <p>Callback·module·for·users·of·the·Megaco·application</p><p>This·module·defines·the·callback·behaviour·of·Megaco·users.·A·megaco_user | 129 | <p>Callback·module·for·users·of·the·Megaco·application</p><p>This·module·defines·the·callback·behaviour·of·Megaco·users.·A·megaco_user |
| 130 | compliant·callback·module·must·export·the·following·functions:</p><ul><li><a·href="#c:handle_connect/3">handle_connect/2,3</a></li><li><a·href="#c:handle_disconnect/3">handle_disconnect/3</a></li><li><a·href="#c:handle_syntax_error/4">handle_syntax_error/3,4</a></li><li><a·href="#c:handle_message_error/4">handle_message_error/3,4</a></li><li><a·href="#c:handle_trans_request/4">handle_trans_request/3,4</a></li><li><a·href="#c:handle_trans_long_request/4">handle_trans_long_request/3,4</a></li><li><a·href="#c:handle_trans_reply/5">handle_trans_reply/4,5</a></li><li><a·href="#c:handle_trans_ack/5">handle_trans_ack/4,5</a></li><li><a·href="#c:handle_unexpected_trans/4">handle_unexpected_trans/3,4</a></li><li><a·href="#c:handle_trans_request_abort/5">handle_trans_request_abort/4,5</a></li><li><a·href="#c:handle_segment_reply/6">handle_segment_reply/5,6</a></li></ul><p>The·semantics·of·them·and·their·exact·signatures·are·explained·below.</p><p>The·<code·class="inline">user_args</code>·configuration·parameter·which·may·be·used·to·extend·the·argument | 130 | compliant·callback·module·must·export·the·following·functions:</p><ul><li><a·href="#c:handle_connect/3">handle_connect/2,3</a></li><li><a·href="#c:handle_disconnect/3">handle_disconnect/3</a></li><li><a·href="#c:handle_syntax_error/4">handle_syntax_error/3,4</a></li><li><a·href="#c:handle_message_error/4">handle_message_error/3,4</a></li><li><a·href="#c:handle_trans_request/4">handle_trans_request/3,4</a></li><li><a·href="#c:handle_trans_long_request/4">handle_trans_long_request/3,4</a></li><li><a·href="#c:handle_trans_reply/5">handle_trans_reply/4,5</a></li><li><a·href="#c:handle_trans_ack/5">handle_trans_ack/4,5</a></li><li><a·href="#c:handle_unexpected_trans/4">handle_unexpected_trans/3,4</a></li><li><a·href="#c:handle_trans_request_abort/5">handle_trans_request_abort/4,5</a></li><li><a·href="#c:handle_segment_reply/6">handle_segment_reply/5,6</a></li></ul><p>The·semantics·of·them·and·their·exact·signatures·are·explained·below.</p><p>The·<code·class="inline">user_args</code>·configuration·parameter·which·may·be·used·to·extend·the·argument |
| 131 | list·of·the·callback·functions.·For·example,·the·handle_connect·function·takes | 131 | list·of·the·callback·functions.·For·example,·the·handle_connect·function·takes |
| 132 | by·default·two·arguments:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">handle_connect</span><span·class="p"·data-group-id=" | 132 | by·default·two·arguments:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">handle_connect</span><span·class="p"·data-group-id="6551730000-1">(</span><span·class="n">Handle</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Version</span><span·class="p"·data-group-id="6551730000-1">)</span></code></pre><p>but·if·the·<code·class="inline">user_args</code>·parameter·is·set·to·a·longer·list,·such·as |
| 133 | <code·class="inline">[SomePid,SomeTableRef]</code>,·the·callback·function·is·expected·to·have·these·(in | 133 | <code·class="inline">[SomePid,SomeTableRef]</code>,·the·callback·function·is·expected·to·have·these·(in |
| 134 | this·case·two)·extra·arguments·last·in·the·argument·list:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">handle_connect</span><span·class="p"·data-group-id=" | 134 | this·case·two)·extra·arguments·last·in·the·argument·list:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">handle_connect</span><span·class="p"·data-group-id="8816050348-1">(</span><span·class="n">Handle</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Version</span><span·class="p">,</span><span·class="w">·</span><span·class="n">SomePid</span><span·class="p">,</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·75,·SHA:·ef1d521fcf6ebec7e979758a76bc15f004499062964c4aac4518d5a5f4ba1c31·...·]-1">)</span></code></pre><p><a·href=""·id="extra_argument"></a></p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Must·of·the·functions·below·has·an·optional·<code·class="inline">Extra</code>·argument·(e.g. |
| 135 | <a·href="#c:handle_unexpected_trans/4">handle_unexpected_trans/4</a>).·The·functions | 135 | <a·href="#c:handle_unexpected_trans/4">handle_unexpected_trans/4</a>).·The·functions |
| 136 | which·takes·this·argument·will·be·called·if·and·only·if·one·of·the·functions | 136 | which·takes·this·argument·will·be·called·if·and·only·if·one·of·the·functions |
| 137 | <a·href="megaco.html#receive_message/5"><code·class="inline">receive_message/5</code></a>·or | 137 | <a·href="megaco.html#receive_message/5"><code·class="inline">receive_message/5</code></a>·or |
| 138 | <a·href="megaco.html#process_received_message/5"><code·class="inline">process_received_message/5</code></a>·was·called | 138 | <a·href="megaco.html#process_received_message/5"><code·class="inline">process_received_message/5</code></a>·was·called |
| 139 | with·the·<code·class="inline">Extra</code>·argument·different·than·<code·class="inline">ignore_extra</code>.</p></section><h2·id="module-data-types"·class="section-heading"> | 139 | with·the·<code·class="inline">Extra</code>·argument·different·than·<code·class="inline">ignore_extra</code>.</p></section><h2·id="module-data-types"·class="section-heading"> |
| 140 | ··<a·href="#module-data-types"·class="hover-link"> | 140 | ··<a·href="#module-data-types"·class="hover-link"> |
| 141 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 141 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 142 | ··</a> | 142 | ··</a> |
| 143 | ··<span·class="text">DATA·TYPES</span> | 143 | ··<span·class="text">DATA·TYPES</span> |
| 144 | </h2> | 144 | </h2> |
| 145 | <pre><code·class="makeup·erlang"·translate="no"><span·class="nf">action_request</span><span·class="p"·data-group-id=" | 145 | <pre><code·class="makeup·erlang"·translate="no"><span·class="nf">action_request</span><span·class="p"·data-group-id="7716060140-1">(</span><span·class="p"·data-group-id="7716060140-1">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">'ActionRequest'</span><span·class="p"·data-group-id="7716060[·...·truncated·by·diffoscope;·len:·56,·SHA:·77064999910e3380f9af1e047e65cf71e6465a4c86a10a75e31ec334a724ad40·...·]-2">}</span><span·class="w"> |
| 146 | </span><span·class="nf">action_reply</span><span·class="p"·data-group-id=" | 146 | </span><span·class="nf">action_reply</span><span·class="p"·data-group-id="7716060140-3">(</span><span·class="p"·data-group-id="7716060140-3">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">'ActionReply'</span><span·class="p"·data-group-id="771606014[·...·truncated·by·diffoscope;·len:·54,·SHA:·dfa97c70a3c4c26dca19a3a839e62fb9a2b84f404367e62db0ad1deab9f1afb5·...·]-4">}</span><span·class="w"> |
| 147 | </span><span·class="nf">error_desc</span><span·class="p"·data-group-id="4905138404-5">(</span><span·class="p"·data-group-id="4905138404-5">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">'ErrorDescriptor'</span><span·class="p"·data-group-id="4905138404-6">{</span><span·class="p"·data-group-id="4905138404-6">}</span><span·class="w"> | ||
| 148 | </span><span·class="nf"> | 147 | </span><span·class="nf">error_desc</span><span·class="p"·data-group-id="7716060140-5">(</span><span·class="p"·data-group-id="7716060140-5">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">'ErrorDescriptor[·...·truncated·by·diffoscope;·len:·134,·SHA:·5d9f3847fd991b87d93b68ee0954d17268ea5000d3528cbbffec91665ea93b6d·...·] |
| 148 | </span><span·class="nf">segment_no</span><span·class="p"·data-group-id="7716060140-7">(</span><span·class="p"·data-group-id="7716060140-7">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="7716060140-8">(</span><span·class="p"·data-group-id="7716060140-8">)</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">conn_handle</span><span·class="p"·data-group-id="3062343609-1">(</span><span·class="p"·data-group-id="3062343609-1">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">megaco_conn_handle</span><span·class="p"·data-group-id="3062343609-2">{</span><span·class="p"·data-group-id="3062343609-2">}</span></code></pre><p>The·record·initially·returned·by·<code·class="inline">megaco:connect/4,5</code>.·It·identifies·a·"virtual" | ||
| 149 | connection·and·may·be·reused·after·a·reconnect·(disconnect·+·connect).</p><pre><code·class="text">protocol_version()·=·integer()</code></pre><p>Is·the·actual·protocol·version.·In·most·cases·the·protocol·version·is·retrieved | 149 | connection·and·may·be·reused·after·a·reconnect·(disconnect·+·connect).</p><pre><code·class="text">protocol_version()·=·integer()</code></pre><p>Is·the·actual·protocol·version.·In·most·cases·the·protocol·version·is·retrieved |
| 150 | from·the·processed·message,·but·there·are·exceptions:</p><ul><li>When·<code·class="inline">handle_connect/2,3</code>·is·triggered·by·an·explicit·call·to | 150 | from·the·processed·message,·but·there·are·exceptions:</p><ul><li>When·<code·class="inline">handle_connect/2,3</code>·is·triggered·by·an·explicit·call·to |
| 151 | <code·class="inline">megaco:connect/4,5</code>.</li><li><a·href="#c:handle_disconnect/3"><code·class="inline">handle_disconnect/3</code></a></li><li><a·href="#c:handle_syntax_error/3"><code·class="inline">handle_syntax_error/3</code></a></li></ul><p>In·these·cases,·the·ProtocolVersion·default·version·is·obtained·from·the·static | 151 | <code·class="inline">megaco:connect/4,5</code>.</li><li><a·href="#c:handle_disconnect/3"><code·class="inline">handle_disconnect/3</code></a></li><li><a·href="#c:handle_syntax_error/3"><code·class="inline">handle_syntax_error/3</code></a></li></ul><p>In·these·cases,·the·ProtocolVersion·default·version·is·obtained·from·the·static |
| 152 | connection·configuration:</p><ul><li><code·class="inline">megaco:conn_info(ConnHandle,·protocol_version)</code>.</li></ul> | 152 | connection·configuration:</p><ul><li><code·class="inline">megaco:conn_info(ConnHandle,·protocol_version)</code>.</li></ul> |
| 153 | ····</section> | 153 | ····</section> |
| 154 | </div> | 154 | </div> |
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| 134 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·create_table(Tab·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:atom/0">atom</a>(),·Opt·::·[{<a·href="../../../../lib/../erts/doc/html/erlang.html#t:atom/0">atom</a>(),·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:term/0">term</a>()}])·->·ok.</pre> | 134 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·create_table(Tab·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:atom/0">atom</a>(),·Opt·::·[{<a·href="../../../../lib/../erts/doc/html/erlang.html#t:atom/0">atom</a>(),·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:term/0">term</a>()}])·->·ok.</pre> |
| 135 | ······</div> | 135 | ······</div> |
| 136 | <section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p><em>This·function·is·deprecated.·Do·not·use·it.</em></p></section><p>A·wrapper·function·for·<a·href="mnesia.xhtml#create_table/2"><code·class="inline">mnesia:create_table/2</code></a>,·which·creates·a·table·(if·there | 136 | <section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p><em>This·function·is·deprecated.·Do·not·use·it.</em></p></section><p>A·wrapper·function·for·<a·href="mnesia.xhtml#create_table/2"><code·class="inline">mnesia:create_table/2</code></a>,·which·creates·a·table·(if·there |
| 137 | is·no·existing·table)·with·an·appropriate·set·of·<code·class="inline">attributes</code>.·The·attributes | 137 | is·no·existing·table)·with·an·appropriate·set·of·<code·class="inline">attributes</code>.·The·attributes |
| 138 | and·<code·class="inline">TabDef</code>·are·forwarded·to·<a·href="mnesia.xhtml#create_table/2"><code·class="inline">mnesia:create_table/2</code></a>.·For·example,·if·the·table | 138 | and·<code·class="inline">TabDef</code>·are·forwarded·to·<a·href="mnesia.xhtml#create_table/2"><code·class="inline">mnesia:create_table/2</code></a>.·For·example,·if·the·table |
| 139 | is·to·reside·as·<code·class="inline">disc_only_copies</code>·on·all·nodes,·a·call·looks·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="w">··········</samp><samp·class="n">TabDef</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="p"·data-group-id="3561858648-1">[</samp><samp·class="p"·data-group-id="3561858648-2">{</samp><samp·class="p"·data-group-id="3561858648-3">{</samp><samp·class="ss">disc_only_copies</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="nf">node</samp><samp·class="p"·data-group-id="3561858648-4">(</samp><samp·class="p"·data-group-id="3561858648-4">)</samp><samp·class="p">|</samp><samp·class="nf">nodes</samp><samp·class="p"·data-group-id="3561858648-5">(</samp><samp·class="p"·data-group-id="3561858648-5">)</samp><samp·class="p">]</samp><samp·class="p"·data-group-id="3561858648-3">}</samp><samp·class="p">]</samp><samp·class="p">,</samp><samp·class="w"> | ||
| 140 | 139 | is·to·reside·as·<code·class="inline">disc_only_copies</code>·on·all·nodes,·a·call·looks·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="w">··········</samp><samp·class="n">TabDef</samp><samp·class="w">·</samp><samp·class="o">=</[·...·truncated·by·diffoscope;·len:·709,·SHA:·271f1fc58469141b9369848e489fea07d88c4fdee1c3639f3c17ba6e597caf71·...·]> | |
| 140 | ··········</samp><samp·class="nc">mnesia_registry</samp><samp·class="p">:</samp><samp·class="nf">create_table</samp><samp·class="p"·data-group-id="4774218679-6">(</samp><samp·class="ss">my_reg</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">TabDef</samp><samp·class="p"·data-group-id="4774218679-6">)</samp></code></pre> | ||
| 141 | ··</section> | 141 | ··</section> |
| 142 | </section> | 142 | </section> |
| 143 | ········</div> | 143 | ········</div> |
| 144 | ······</section> | 144 | ······</section> |
| Offset 162, 19 lines modified | Offset 162, 19 lines modified | ||
| 162 | <code·class="inline">true</code>,·a·majority·of·the·table·replicas·must·be·available·for·an·update·to | 162 | <code·class="inline">true</code>,·a·majority·of·the·table·replicas·must·be·available·for·an·update·to |
| 163 | succeed.·Majority·checking·can·be·enabled·on·tables·with·mission-critical | 163 | succeed.·Majority·checking·can·be·enabled·on·tables·with·mission-critical |
| 164 | data,·where·it·is·vital·to·avoid·inconsistencies·because·of·network·splits.</p></li><li><p><code·class="inline">snmp</code>.·Each·(set-based)·Mnesia·table·can·be·automatically·turned·into·a | 164 | data,·where·it·is·vital·to·avoid·inconsistencies·because·of·network·splits.</p></li><li><p><code·class="inline">snmp</code>.·Each·(set-based)·Mnesia·table·can·be·automatically·turned·into·a |
| 165 | Simple·Network·Management·Protocol·(SNMP)·ordered·table·as·well.·This·property | 165 | Simple·Network·Management·Protocol·(SNMP)·ordered·table·as·well.·This·property |
| 166 | specifies·the·types·of·the·SNMP·keys.</p></li><li><p><code·class="inline">attributes</code>.·The·names·of·the·attributes·for·the·records·that·are·inserted·in | 166 | specifies·the·types·of·the·SNMP·keys.</p></li><li><p><code·class="inline">attributes</code>.·The·names·of·the·attributes·for·the·records·that·are·inserted·in |
| 167 | the·table.</p></li></ul><p>For·information·about·the·complete·set·of·table·properties·and·their·details, | 167 | the·table.</p></li></ul><p>For·information·about·the·complete·set·of·table·properties·and·their·details, |
| 168 | see·<a·href="#create_table/2"><code·class="inline">mnesia:create_table/2</code></a>.</p><p>This·Reference·Manual·uses·a·table·of·persons·to·illustrate·various·examples. | 168 | see·<a·href="#create_table/2"><code·class="inline">mnesia:create_table/2</code></a>.</p><p>This·Reference·Manual·uses·a·table·of·persons·to·illustrate·various·examples. |
| 169 | The·following·record·definition·is·assumed:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 169 | The·following·record·definition·is·assumed:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="5973387559-1">(</span><span·class="ss">person</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5973387559-2">{</span><span·class="ss">name</span><span·class="p">,</span><span·class="w"> |
| 170 | ·················</span><span·class="ss">age</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">,</span><span·class="w"> | 170 | ·················</span><span·class="ss">age</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">,</span><span·class="w"> |
| 171 | ·················</span><span·class="ss">address</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">unknown</span><span·class="p">,</span><span·class="w"> | 171 | ·················</span><span·class="ss">address</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">unknown</span><span·class="p">,</span><span·class="w"> |
| 172 | ·················</span><span·class="ss">salary</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">,</span><span·class="w"> | 172 | ·················</span><span·class="ss">salary</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">,</span><span·class="w"> |
| 173 | ·················</span><span·class="ss">children</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 173 | ·················</span><span·class="ss">children</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="5973387559-3">[</span><span·class="p"·data-group-id="5973387559-3">]</span><span·class="p"·data-group-id="5973387559-2">}</span><span·class="p"·data-group-id="5973387559-1">)</span><span·class="p">,</span></code></pre><p>The·first·record·attribute·is·the·primary·key,·or·key·for·short.</p><p>The·function·descriptions·are·sorted·in·alphabetical·order.·It·is·recommended·to |
| 174 | start·to·read·about·<a·href="#create_table/2"><code·class="inline">mnesia:create_table/2</code></a>,·<a·href="#lock/2"><code·class="inline">mnesia:lock/2</code></a>,·and | 174 | start·to·read·about·<a·href="#create_table/2"><code·class="inline">mnesia:create_table/2</code></a>,·<a·href="#lock/2"><code·class="inline">mnesia:lock/2</code></a>,·and |
| 175 | ·<a·href="#activity/4"><code·class="inline">mnesia:activity/4</code></a>·before·you·continue·and·learn·about·the·rest.</p><p>Writing·or·deleting·in·transaction-context·creates·a·local·copy·of·each·modified | 175 | ·<a·href="#activity/4"><code·class="inline">mnesia:activity/4</code></a>·before·you·continue·and·learn·about·the·rest.</p><p>Writing·or·deleting·in·transaction-context·creates·a·local·copy·of·each·modified |
| 176 | record·during·the·transaction.·During·iteration,·that·is,·<a·href="#foldl/4"><code·class="inline">mnesia:foldl/4</code></a>, | 176 | record·during·the·transaction.·During·iteration,·that·is,·<a·href="#foldl/4"><code·class="inline">mnesia:foldl/4</code></a>, |
| 177 | <a·href="#foldr/4"><code·class="inline">mnesia:foldr/4</code></a>,·<a·href="#next/2"><code·class="inline">mnesia:next/2</code></a>,·<a·href="#prev/2"><code·class="inline">mnesia:prev/2</code></a>,·and·<a·href="#snmp_get_next_index/2"><code·class="inline">mnesia:snmp_get_next_index/2</code></a>,·Mnesia | 177 | <a·href="#foldr/4"><code·class="inline">mnesia:foldr/4</code></a>,·<a·href="#next/2"><code·class="inline">mnesia:next/2</code></a>,·<a·href="#prev/2"><code·class="inline">mnesia:prev/2</code></a>,·and·<a·href="#snmp_get_next_index/2"><code·class="inline">mnesia:snmp_get_next_index/2</code></a>,·Mnesia |
| 178 | compensates·for·every·written·or·deleted·record,·which·can·reduce·the | 178 | compensates·for·every·written·or·deleted·record,·which·can·reduce·the |
| 179 | performance.</p><p>If·possible,·avoid·writing·or·deleting·records·in·the·same·transaction·before | 179 | performance.</p><p>If·possible,·avoid·writing·or·deleting·records·in·the·same·transaction·before |
| 180 | iterating·over·the·table.</p><h2·id="module-configuration-parameters"·class="section-heading"> | 180 | iterating·over·the·table.</p><h2·id="module-configuration-parameters"·class="section-heading"> |
| Offset 2793, 15 lines modified | Offset 2793, 15 lines modified | ||
| 2793 | ······<div·class="specs"> | 2793 | ······<div·class="specs"> |
| 2794 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·change_table_copy_type(Tab·::·<a·href="#t:table/0">table</a>(),·Node·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:node/0">node</a>(),·To·::·<a·href="#t:storage_type/0">storage_type</a>())·->·<a·href="#t:t_result/1">t_result</a>(ok).</pre> | 2794 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·change_table_copy_type(Tab·::·<a·href="#t:table/0">table</a>(),·Node·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:node/0">node</a>(),·To·::·<a·href="#t:storage_type/0">storage_type</a>())·->·<a·href="#t:t_result/1">t_result</a>(ok).</pre> |
| 2795 | ······</div> | 2795 | ······</div> |
| 2796 | <p>Change·the·storage·type·of·a·table.</p><p>For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">change_table_copy_type</span><span·class="p"·data-group-id="6 | 2796 | <p>Change·the·storage·type·of·a·table.</p><p>For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">change_table_copy_type</span><span·class="p"·data-group-id="6995167524-1">(</span><span·class="ss">person</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">node</span><span·class="p"·data-group-id="6995167524-2">(</span><span·class="p"·data-group-id="6995167524-2">)</span><span·class="p">,</span[·...·truncated·by·diffoscope;·len:·101,·SHA:·ee157313dc9545baf73d21b396f35425a7f87516ec24d46514a8469305b03aa7·...·]-1">)</span></code></pre><p>Transforms·the·<code·class="inline">person</code>·table·from·a·RAM·table·into·a·disc-based·table·at |
| 2797 | <code·class="inline">Node</code>.</p><p>This·function·can·also·be·used·to·change·the·storage·type·of·the·table·named | 2797 | <code·class="inline">Node</code>.</p><p>This·function·can·also·be·used·to·change·the·storage·type·of·the·table·named |
| 2798 | <code·class="inline">schema</code>.·The·schema·table·can·only·have·<code·class="inline">ram_copies</code>·or·<code·class="inline">disc_copies</code>·as·the | 2798 | <code·class="inline">schema</code>.·The·schema·table·can·only·have·<code·class="inline">ram_copies</code>·or·<code·class="inline">disc_copies</code>·as·the |
| 2799 | storage·type.·If·the·storage·type·of·the·schema·is·<code·class="inline">ram_copies</code>,·no·other·table | 2799 | storage·type.·If·the·storage·type·of·the·schema·is·<code·class="inline">ram_copies</code>,·no·other·table |
| 2800 | can·be·disc-resident·on·that·node.</p> | 2800 | can·be·disc-resident·on·that·node.</p> |
| 2801 | ··</section> | 2801 | ··</section> |
| 2802 | </section> | 2802 | </section> |
| 2803 | <section·class="detail"·id="change_table_frag/2"> | 2803 | <section·class="detail"·id="change_table_frag/2"> |
| Offset 3032, 30 lines modified | Offset 3032, 30 lines modified | ||
| 3032 | Therefore·applications·that·use·SNMP·to·manipulate·and·control·the·system·can | 3032 | Therefore·applications·that·use·SNMP·to·manipulate·and·control·the·system·can |
| 3033 | be·designed·easily,·since·Mnesia·provides·a·direct·mapping·between·the·logical | 3033 | be·designed·easily,·since·Mnesia·provides·a·direct·mapping·between·the·logical |
| 3034 | tables·that·make·up·an·SNMP·control·application·and·the·physical·data·that | 3034 | tables·that·make·up·an·SNMP·control·application·and·the·physical·data·that |
| 3035 | makes·up·a·Mnesia·table.</p></li><li><p><code·class="inline">{storage_properties,·[{Backend,·Properties}]</code>·forwards·more·properties·to·the | 3035 | makes·up·a·Mnesia·table.</p></li><li><p><code·class="inline">{storage_properties,·[{Backend,·Properties}]</code>·forwards·more·properties·to·the |
| 3036 | back·end·storage.·<code·class="inline">Backend</code>·can·currently·be·<code·class="inline">ets</code>·or·<code·class="inline">dets</code>.·<code·class="inline">Properties</code>·is | 3036 | back·end·storage.·<code·class="inline">Backend</code>·can·currently·be·<code·class="inline">ets</code>·or·<code·class="inline">dets</code>.·<code·class="inline">Properties</code>·is |
| 3037 | a·list·of·options·sent·to·the·back·end·storage·during·table·creation. | 3037 | a·list·of·options·sent·to·the·back·end·storage·during·table·creation. |
| 3038 | <code·class="inline">Properties</code>·cannot·contain·properties·already·used·by·Mnesia,·such·as·<code·class="inline">type</code> | 3038 | <code·class="inline">Properties</code>·cannot·contain·properties·already·used·by·Mnesia,·such·as·<code·class="inline">type</code> |
| 3039 | or·<code·class="inline">named_table</code>.</p><p>For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id=" | 3039 | or·<code·class="inline">named_table</code>.</p><p>For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id="6266695732-1">(</span><span·class="ss">table</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6266695732-2">[</span><span·class="p"·data-group-id="6266695732-3">{</span><span·class="ss">ram_copies</span><span·class="p">,[·...·truncated·by·diffoscope;·len:·689,·SHA:·3be14222a051ef2571219d8342aaa29042b1584e32a7ea0a3c1ccbf82381f612·...·]-6">}</span><span·class="p">,</span><span·class="w"> |
| 3040 | ·······</span><span·class="p"·data-group-id=" | 3040 | ·······</span><span·class="p"·data-group-id="6266695732-8">{</span><span·class="ss">storage_properties</span><span·class="p">,</span><span·class="w"> |
| 3041 | ········</span><span·class="p"·data-group-id=" | 3041 | ········</span><span·class="p"·data-group-id="6266695732-9">[</span><span·class="p"·data-group-id="6266695732-10">{</span><span·class="ss">ets</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6266695732-11">[</span><span·class="ss">compressed</span><span·class="p"·d[·...·truncated·by·diffoscope;·len:·872,·SHA:·770cf53f968c8e131de9c807010e925f41bfca544a2c7f40b2e595a1d4308fd2·...·]-1">)</span></code></pre></li><li><p><code·class="inline">{type,·Type}</code>,·where·<code·class="inline">Type</code>·must·be·either·of·the·atoms·<code·class="inline">set</code>,·<code·class="inline">ordered_set</code>, |
| 3042 | or·<code·class="inline">bag</code>.·Default·is·<code·class="inline">set</code>.·In·a·<code·class="inline">set</code>,·all·records·have·unique·keys.·In·a | 3042 | or·<code·class="inline">bag</code>.·Default·is·<code·class="inline">set</code>.·In·a·<code·class="inline">set</code>,·all·records·have·unique·keys.·In·a |
| 3043 | <code·class="inline">bag</code>,·several·records·can·have·the·same·key,·but·the·record·content·is | 3043 | <code·class="inline">bag</code>,·several·records·can·have·the·same·key,·but·the·record·content·is |
| 3044 | unique.·If·a·non-unique·record·is·stored,·the·old·conflicting·records·are | 3044 | unique.·If·a·non-unique·record·is·stored,·the·old·conflicting·records·are |
| 3045 | overwritten.</p><p>Notice·that·currently·<code·class="inline">ordered_set</code>·is·not·supported·for·<code·class="inline">disc_only_copies</code>.</p></li><li><p><code·class="inline">{local_content,·Bool}</code>,·where·<code·class="inline">Bool</code>·is·<code·class="inline">true</code>·or·<code·class="inline">false</code>.·Default·is | 3045 | overwritten.</p><p>Notice·that·currently·<code·class="inline">ordered_set</code>·is·not·supported·for·<code·class="inline">disc_only_copies</code>.</p></li><li><p><code·class="inline">{local_content,·Bool}</code>,·where·<code·class="inline">Bool</code>·is·<code·class="inline">true</code>·or·<code·class="inline">false</code>.·Default·is |
| 3046 | <code·class="inline">false</code>.</p></li></ul><p>For·example,·the·following·call·creates·the·<code·class="inline">person</code>·table·(defined·earlier)·and | 3046 | <code·class="inline">false</code>.</p></li></ul><p>For·example,·the·following·call·creates·the·<code·class="inline">person</code>·table·(defined·earlier)·and |
| 3047 | replicates·it·on·two·nodes:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id="35 | 3047 | replicates·it·on·two·nodes:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id="3957454675-1">(</span><span·class="ss">person</span><span·class="p">,</span><span·class="w"> |
| 3048 | ····</span><span·class="p"·data-group-id="35 | 3048 | ····</span><span·class="p"·data-group-id="3957454675-2">[</span><span·class="p"·data-group-id="3957454675-3">{</span><span·class="ss">ram_copies</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3957454675-4">[</span><span·class="n">N1</span><span·class="p">,</spa[·...·truncated·by·diffoscope;·len:·145,·SHA:·b563e415da893531ad3c0017f22d4c5b77a39b2193ae87d1cb891e5f0458236d·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 3049 | ·····</span><span·class="p"·data-group-id="35 | 3049 | ·····</span><span·class="p"·data-group-id="3957454675-5">{</span><span·class="ss">attributes</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">record_info</span><span·class="p"·data-group-id="3957454675-6">(</span><span·class="ss">fields</span><span·class="p">,</span><span·class[·...·truncated·by·diffoscope;·len:·243,·SHA:·b57b1b5808aa2c7e2e7180f7f71abb50c3f5ff7c88227b7126fff413e7b82943·...·]-1">)</span><span·class="p">.</span></code></pre><p>If·it·is·required·that·Mnesia·must·build·and·maintain·an·extra·index·table·on |
| 3050 | attribute·<code·class="inline">address</code>·of·all·the·<code·class="inline">person</code>·records·that·are·inserted·in·the·table, | 3050 | attribute·<code·class="inline">address</code>·of·all·the·<code·class="inline">person</code>·records·that·are·inserted·in·the·table, |
| 3051 | the·following·code·would·be·issued:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id=" | 3051 | the·following·code·would·be·issued:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id="1814052236-1">(</span><span·class="ss">person</span><span·class="p">,</span><span·class="w"> |
| 3052 | ····</span><span·class="p"·data-group-id=" | 3052 | ····</span><span·class="p"·data-group-id="1814052236-2">[</span><span·class="p"·data-group-id="1814052236-3">{</span><span·class="ss">ram_copies</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1814052236-4">[</span><span·class="n">N1</span><span·class="p">,</sp[·...·truncated·by·diffoscope;·len:·146,·SHA:·9618df21b9fb9f32e84fc401902889bdfc81fd85f63b733ecf685abe58d9d1e1·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 3053 | ·····</span><span·class="p"·data-group-id=" | 3053 | ·····</span><span·class="p"·data-group-id="1814052236-5">{</span><span·class="ss">index</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1814052236-6">[</span><span·class="ss">address</span><span·class="p"·data-group-id="1814052236-6">]</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·21,·SHA:·c464f71122361af0c321f0c0864ffd290a2b02ea05ec8fd1d817a79ec054d25b·...·]-5">}</span><span·class="p">,</span><span·class="w"> |
| 3054 | ·····</span><span·class="p"·data-group-id=" | 3054 | ·····</span><span·class="p"·data-group-id="1814052236-7">{</span><span·class="ss">attributes</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">record_info</span><span·class="p"·data-group-id="1814052236-8">(</span><span·class="ss">fields</span><span·class="p">,</span><span·clas[·...·truncated·by·diffoscope;·len:·244,·SHA:·0bcac4a9d0fd3fe26e4b851b08bf9bac00771c52aa4bc4b69c78a8a4575bd96f·...·]-1">)</span><span·class="p">.</span></code></pre><p>The·specification·of·<code·class="inline">index</code>·and·<code·class="inline">attributes</code>·can·be·hard-coded·as |
| 3055 | <code·class="inline">{index,·[2]}</code>·and·<code·class="inline">{attributes,·[name,·age,·address,·salary,·children]}</code>, | 3055 | <code·class="inline">{index,·[2]}</code>·and·<code·class="inline">{attributes,·[name,·age,·address,·salary,·children]}</code>, |
| 3056 | respectively.</p><p><a·href="#create_table/2"><code·class="inline">mnesia:create_table/2</code></a>·writes·records·into·the·table·<code·class="inline">schema</code>.·This·function, | 3056 | respectively.</p><p><a·href="#create_table/2"><code·class="inline">mnesia:create_table/2</code></a>·writes·records·into·the·table·<code·class="inline">schema</code>.·This·function, |
| 3057 | and·all·other·schema·manipulation·functions,·are·implemented·with·the·normal | 3057 | and·all·other·schema·manipulation·functions,·are·implemented·with·the·normal |
| 3058 | transaction·management·system.·This·guarantees·that·schema·updates·are·performed | 3058 | transaction·management·system.·This·guarantees·that·schema·updates·are·performed |
| 3059 | on·all·nodes·in·an·atomic·manner.</p> | 3059 | on·all·nodes·in·an·atomic·manner.</p> |
| 3060 | ··</section> | 3060 | ··</section> |
| 3061 | </section> | 3061 | </section> |
| Offset 5155, 18 lines modified | Offset 5155, 18 lines modified | ||
| 5155 | ······</div> | 5155 | ······</div> |
| 5156 | <p>Select·the·objects·in·<code·class="inline">Tab</code>·against·<code·class="inline">MatchSpec</code>.</p><p>Matches·the·objects·in·table·<code·class="inline">Tab</code>·using·a·<code·class="inline">match_spec</code>·as·described·in·the | 5156 | <p>Select·the·objects·in·<code·class="inline">Tab</code>·against·<code·class="inline">MatchSpec</code>.</p><p>Matches·the·objects·in·table·<code·class="inline">Tab</code>·using·a·<code·class="inline">match_spec</code>·as·described·in·the |
| 5157 | <a·href="../../../../lib/stdlib-6.2.1/doc/html/ets.html#select/3"><code·class="inline">ets:select/3</code></a>.·Optionally·a·lock·<code·class="inline">read</code>·or·<code·class="inline">write</code>·can·be·given·as·the·third | 5157 | <a·href="../../../../lib/stdlib-6.2.1/doc/html/ets.html#select/3"><code·class="inline">ets:select/3</code></a>.·Optionally·a·lock·<code·class="inline">read</code>·or·<code·class="inline">write</code>·can·be·given·as·the·third |
| 5158 | argument.·Default·is·<code·class="inline">read</code>.·The·return·value·depends·on·<code·class="inline">MatchSpec</code>.</p><p>Notice·that·for·best·performance,·<code·class="inline">select</code>·is·to·be·used·before·any·modifying | 5158 | argument.·Default·is·<code·class="inline">read</code>.·The·return·value·depends·on·<code·class="inline">MatchSpec</code>.</p><p>Notice·that·for·best·performance,·<code·class="inline">select</code>·is·to·be·used·before·any·modifying |
| 5159 | operations·are·done·on·that·table·in·the·same·transaction.·That·is,·do·not·use | 5159 | operations·are·done·on·that·table·in·the·same·transaction.·That·is,·do·not·use |
| 5160 | <code·class="inline">write</code>·or·<code·class="inline">delete</code>·before·a·<code·class="inline">select</code>.</p><p>In·its·simplest·forms,·the·<code·class="inline">match_spec</code>·look·as·follows:</p><ul><li><code·class="inline">MatchSpec·=·[MatchFunction]</code></li><li><code·class="inline">MatchFunction·=·{MatchHead,·[Guard],·[Result]}</code></li><li><p><code·class="inline">MatchHead·=·tuple()·|·record()</code></p></li><li><code·class="inline">Guard·=·{"Guardtest·name",·...}</code></li><li><code·class="inline">Result·=·"Term·construct"</code></li></ul><p>For·a·complete·description·of·<code·class="inline">select</code>,·see·the·<a·href="../../../../erts-15.2.3/doc/html/index.html">ERTS</a> | 5160 | <code·class="inline">write</code>·or·<code·class="inline">delete</code>·before·a·<code·class="inline">select</code>.</p><p>In·its·simplest·forms,·the·<code·class="inline">match_spec</code>·look·as·follows:</p><ul><li><code·class="inline">MatchSpec·=·[MatchFunction]</code></li><li><code·class="inline">MatchFunction·=·{MatchHead,·[Guard],·[Result]}</code></li><li><p><code·class="inline">MatchHead·=·tuple()·|·record()</code></p></li><li><code·class="inline">Guard·=·{"Guardtest·name",·...}</code></li><li><code·class="inline">Result·=·"Term·construct"</code></li></ul><p>For·a·complete·description·of·<code·class="inline">select</code>,·see·the·<a·href="../../../../erts-15.2.3/doc/html/index.html">ERTS</a> |
| 5161 | User's·Guide·and·the·<a·href="../../../../lib/stdlib-6.2.1/doc/html/ets.html"><code·class="inline">ets</code></a>·manual·page·in·STDLIB.</p><p>For·example,·to·find·the·names·of·all·male·persons·older·than·30·in·table·<code·class="inline">Tab</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">MatchHead</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id=" | 5161 | User's·Guide·and·the·<a·href="../../../../lib/stdlib-6.2.1/doc/html/ets.html"><code·class="inline">ets</code></a>·manual·page·in·STDLIB.</p><p>For·example,·to·find·the·names·of·all·male·persons·older·than·30·in·table·<code·class="inline">Tab</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">MatchHead</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id="2997160231-1">{</span><span·class="ss">name</span><span·class="o">=</span><span·class="ss">'$1'</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">sex</span><span·class="o">=</span><span·class="ss">male</span><span·class="p">,</[·...·truncated·by·diffoscope;·len:·288,·SHA:·6e64bff868e4b217ae5b0b26570710caa1052d6d885a139726046d101d45502a·...·]-1">}</span><span·class="p">,</span><span·class="w"> |
| 5162 | </span><span·class="n">Guard</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 5162 | </span><span·class="n">Guard</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2997160231-2">{</span><span·class="ss">'>'</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'$2'</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">30</span><span·class="p"·data-group-id="2997160[·...·truncated·by·diffoscope;·len:·3,·SHA:·138d9e809e386a7b800791d1f664f56d1c55f3d1ba411b950862729bc486c5ce·...·]-2">}</span><span·class="p">,</span><span·class="w"> |
| 5163 | </span><span·class="n">Result</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">'$1'</span><span·class="p">,</span><span·class="w"> | 5163 | </span><span·class="n">Result</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">'$1'</span><span·class="p">,</span><span·class="w"> |
| 5164 | </span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id=" | 5164 | </span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id="2997160231-3">(</span><span·class="n">Tab</span><span·class="p">,</span><span·class="p"·data-group-id="2997160231-4">[</span><span·class="p"·data-group-id="2997160231-5">{</span><span·class="n">MatchHead</span><span·class="p">,</span><span·class="w">·</spa[·...·truncated·by·diffoscope;·len:·466,·SHA:·6f46a49e4b4e3844b9aba9c5394141843fb3b2d8216fe661dd4709eb7a61632f·...·]-3">)</span><span·class="p">,</span></code></pre> |
| 5165 | ··</section> | 5165 | ··</section> |
| 5166 | </section> | 5166 | </section> |
| 5167 | <section·class="detail"·id="select/4"> | 5167 | <section·class="detail"·id="select/4"> |
| 5168 | ··<div·class="detail-header"> | 5168 | ··<div·class="detail-header"> |
| 5169 | ····<a·href="#select/4"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 5169 | ····<a·href="#select/4"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 5170 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 5170 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 5435, 17 lines modified | Offset 5435, 17 lines modified | ||
| 5435 | information·needed·is·information·about·the·key·types·in·the·table.·Multiple | 5435 | information·needed·is·information·about·the·key·types·in·the·table.·Multiple |
| 5436 | keys·cannot·be·handled·in·Mnesia,·but·many·SNMP·tables·have·multiple·keys. | 5436 | keys·cannot·be·handled·in·Mnesia,·but·many·SNMP·tables·have·multiple·keys. |
| 5437 | Therefore,·the·following·convention·is·used:·if·a·table·has·multiple·keys,·these | 5437 | Therefore,·the·following·convention·is·used:·if·a·table·has·multiple·keys,·these |
| 5438 | must·always·be·stored·as·a·tuple·of·the·keys.·Information·about·the·key·types·is | 5438 | must·always·be·stored·as·a·tuple·of·the·keys.·Information·about·the·key·types·is |
| 5439 | specified·as·a·tuple·of·atoms·describing·the·types.·The·only·significant·type·is | 5439 | specified·as·a·tuple·of·atoms·describing·the·types.·The·only·significant·type·is |
| 5440 | <code·class="inline">fix_string</code>.·This·means·that·a·string·has·a·fixed·size.</p><p>For·example,·the·following·causes·table·<code·class="inline">person</code>·to·be·ordered·as·an·SNMP·table:</p><pre><code·class="text">mnesia:snmp_open_table(person,·[{key,·string}])</code></pre><p>Consider·the·following·schema·for·a·table·of·company·employees.·Each·employee·is | 5440 | <code·class="inline">fix_string</code>.·This·means·that·a·string·has·a·fixed·size.</p><p>For·example,·the·following·causes·table·<code·class="inline">person</code>·to·be·ordered·as·an·SNMP·table:</p><pre><code·class="text">mnesia:snmp_open_table(person,·[{key,·string}])</code></pre><p>Consider·the·following·schema·for·a·table·of·company·employees.·Each·employee·is |
| 5441 | identified·by·department·number·and·name.·The·other·table·column·stores·the | 5441 | identified·by·department·number·and·name.·The·other·table·column·stores·the |
| 5442 | telephone·number:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id=" | 5442 | telephone·number:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id="8117851040-1">(</span><span·class="ss">employee</span><span·class="p">,</span><span·class="w"> |
| 5443 | ····</span><span·class="p"·data-group-id="6302829376-2">[</span><span·class="p"·data-group-id="6302829376-3">{</span><span·class="ss">snmp</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6302829376-4">[</span><span·class="p"·data-group-id="6302829376-5">{</span><span·class="ss">key</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6302829376-6">{</span><span·class="ss">integer</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">string</span><span·class="p"·data-group-id="6302829376-6">}</span><span·class="p"·data-group-id="6302829376-5">}</span><span·class="p"·data-group-id="6302829376-4">]</span><span·class="p"·data-group-id="6302829376-3">}</span><span·class="p">,</span><span·class="w"> | ||
| 5444 | ···· | 5443 | ····</span><span·class="p"·data-group-id="8117851040-2">[</span><span·class="p"·data-group-id="8117851040-3">{</span><span·class="ss">snmp</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8117851040-4">[</span><span·class="p[·...·truncated·by·diffoscope;·len:·528,·SHA:·4e9daf6f38271130e733407561bfa5ea16d4dc6d1679b1bef0ff7223fa11057d·...·] |
| 5444 | ·····</span><span·class="p"·data-group-id="8117851040-7">{</span><span·class="ss">attributes</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">record_info</span><span·class="p"·data-group-id="8117851040-8">(</span><span·class="ss">fields</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">employees</span><span·class="p"·data-group-id="8117851040-8">)</span><span·class="p"·data-group-id="8117851040-7">}</span><span·class="p"·data-group-id="8117851040-2">]</span><span·class="p"·data-group-id="8117851040-1">)</span><span·class="p">,</span></code></pre><p>The·corresponding·SNMP·table·would·have·three·columns:·<code·class="inline">department</code>,·<code·class="inline">name</code>,·and | ||
| 5445 | <code·class="inline">telno</code>.</p><p>An·option·is·to·have·table·columns·that·are·not·visible·through·the·SNMP | 5445 | <code·class="inline">telno</code>.</p><p>An·option·is·to·have·table·columns·that·are·not·visible·through·the·SNMP |
| 5446 | protocol.·These·columns·must·be·the·last·columns·of·the·table.·In·the·previous | 5446 | protocol.·These·columns·must·be·the·last·columns·of·the·table.·In·the·previous |
| 5447 | example,·the·SNMP·table·could·have·columns·<code·class="inline">department</code>·and·<code·class="inline">name</code>·only.·The | 5447 | example,·the·SNMP·table·could·have·columns·<code·class="inline">department</code>·and·<code·class="inline">name</code>·only.·The |
| 5448 | application·could·then·use·column·<code·class="inline">telno</code>·internally,·but·it·would·not·be | 5448 | application·could·then·use·column·<code·class="inline">telno</code>·internally,·but·it·would·not·be |
| 5449 | visible·to·the·SNMP·managers.</p><p>In·a·table·monitored·by·SNMP,·all·elements·must·be·integers,·strings,·or·lists | 5449 | visible·to·the·SNMP·managers.</p><p>In·a·table·monitored·by·SNMP,·all·elements·must·be·integers,·strings,·or·lists |
| 5450 | of·integers.</p><p>When·a·table·is·SNMP·ordered,·modifications·are·more·expensive·than·usual, | 5450 | of·integers.</p><p>When·a·table·is·SNMP·ordered,·modifications·are·more·expensive·than·usual, |
| 5451 | O(logN).·Also,·more·memory·is·used.</p><p>Notice·that·only·the·lexicographical·SNMP·ordering·is·implemented·in·Mnesia,·not | 5451 | O(logN).·Also,·more·memory·is·used.</p><p>Notice·that·only·the·lexicographical·SNMP·ordering·is·implemented·in·Mnesia,·not |
| Offset 6008, 43 lines modified | Offset 6008, 43 lines modified | ||
| 6008 | <p>Execute·<code·class="inline">Fun</code>·with·arguments·<code·class="inline">Args</code>·as·a·transaction.</p><p>The·code·that·executes·inside·the·transaction·can·consist·of·a·series·of·table | 6008 | <p>Execute·<code·class="inline">Fun</code>·with·arguments·<code·class="inline">Args</code>·as·a·transaction.</p><p>The·code·that·executes·inside·the·transaction·can·consist·of·a·series·of·table |
| 6009 | manipulation·functions.·If·something·goes·wrong·inside·the·transaction·as·a | 6009 | manipulation·functions.·If·something·goes·wrong·inside·the·transaction·as·a |
| 6010 | result·of·a·user·error·or·a·certain·table·not·being·available,·the·entire | 6010 | result·of·a·user·error·or·a·certain·table·not·being·available,·the·entire |
| 6011 | transaction·is·terminated·and·the·function·<a·href="#transaction/1"><code·class="inline">transaction/1</code></a> | 6011 | transaction·is·terminated·and·the·function·<a·href="#transaction/1"><code·class="inline">transaction/1</code></a> |
| 6012 | returns·the·tuple·<code·class="inline">{aborted,·Reason}</code>.</p><p>If·all·is·going·well,·<code·class="inline">{atomic,·ResultOfFun}</code>·is·returned,·where·<code·class="inline">ResultOfFun</code> | 6012 | returns·the·tuple·<code·class="inline">{aborted,·Reason}</code>.</p><p>If·all·is·going·well,·<code·class="inline">{atomic,·ResultOfFun}</code>·is·returned,·where·<code·class="inline">ResultOfFun</code> |
| 6013 | is·the·value·of·the·last·expression·in·<code·class="inline">Fun</code>.</p><p>A·function·that·adds·a·family·to·the·database·can·be·written·as·follows·if·there | 6013 | is·the·value·of·the·last·expression·in·<code·class="inline">Fun</code>.</p><p>A·function·that·adds·a·family·to·the·database·can·be·written·as·follows·if·there |
| 6014 | is·a·structure·<code·class="inline">{family,·Father,·Mother,·ChildrenList}</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">add_family</span><span·class="p"·data-group-id=" | 6014 | is·a·structure·<code·class="inline">{family,·Father,·Mother,·ChildrenList}</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">add_family</span><span·class="p"·data-group-id="4980653523-1">(</span><span·class="p"·data-group-id="4980653523-2">{</span><span·class="ss">family</span><span·class="p">,</span><span·class="w">·</span><span·class="n">F</span><span·class="p">,</span><span·class="w">·</span><span·class="n">M</span><span·c[·...·truncated·by·diffoscope;·len:·166,·SHA:·346d770d774ef15c72761c8a9165e044847ddba06a781e1374d1143dfc86818e·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 6015 | ····</span><span·class="n">ChildOids</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">map</span><span·class="p"·data-group-id=" | 6015 | ····</span><span·class="n">ChildOids</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">map</span><span·class="p"·data-group-id="4980653523-3">(</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">oid</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Children</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·12,·SHA:·e6ecb1c424a7852836f3ab151428a8347bea3b928d4471d42d1f59b38927ea7e·...·]-3">)</span><span·class="p">,</span><span·class="w"> |
| 6016 | ····</span><span·class="n">Trans</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 6016 | ····</span><span·class="n">Trans</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="4980653523-4">(</span><span·class="p"·data-group-id="4980653523-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 6017 | ········</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id="0084355909-5">(</span><span·class="n">F</span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id="0084355909-6">{</span><span·class="ss">children</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">ChildOids</span><span·class="p"·data-group-id="0084355909-6">}</span><span·class="p"·data-group-id="0084355909-5">)</span><span·class="p">,</span><span·class="w"> | ||
| 6018 | ········</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id=" | 6017 | ········</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id="4980653523-5">(</span><span·class="n">F</span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id="4980653523-6">{</span><span·class="ss">children</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span[·...·truncated·by·diffoscope;·len:·129,·SHA:·89639d0e17fb4e5254be9db791c71cb19d4fc8b6f133879cf953a8076cf558b6·...·]">)</span><span·class="p">,</span><span·class="w"> |
| 6018 | ········</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id="4980653523-7">(</span><span·class="n">M</span><span·class="o">#</span><span·class="ss">person</span><span·class="p"·data-group-id="4980653523-8">{</span><span·class="ss">children</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">ChildOids</span><span·class="p"·data-group-id="4980653523-8">}</span><span·class="p"·data-group-id="4980653523-7">)</span><span·class="p">,</span><span·class="w"> | ||
| 6019 | ········</span><span·class="n">Write</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 6019 | ········</span><span·class="n">Write</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="4980653523-9">(</span><span·class="n">Child</span><span·class="p"·data-group-id="4980653523-9">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">write<[·...·truncated·by·diffoscope;·len:·129,·SHA:·1b4afce381548d4a0719536a36bf2606324ad5a1d1652e0d710d57943e7875cf·...·]-10">)</span><span·class="w">·</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 6020 | ········</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">foreach</span><span·class="p"·data-group-id=" | 6020 | ········</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">foreach</span><span·class="p"·data-group-id="4980653523-11">(</span><span·class="n">Write</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Children</span><span·class="p"·data-group-id="4980653523-11">)</span><span·class="w"> |
| 6021 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 6021 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 6022 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">transaction</span><span·class="p"·data-group-id=" | 6022 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">transaction</span><span·class="p"·data-group-id="4980653523-12">(</span><span·class="n">Trans</span><span·class="p"·data-group-id="4980653523-12">)</span><span·class="p">.</span><span·class="w"> |
| 6023 | </span><span·class="nf">oid</span><span·class="p"·data-group-id=" | 6023 | </span><span·class="nf">oid</span><span·class="p"·data-group-id="4980653523-13">(</span><span·class="n">Rec</span><span·class="p"·data-group-id="4980653523-13">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="4980653523-14">{</span><span·class="nf">elemen[·...·truncated·by·diffoscope;·len:·542,·SHA:·aa4de783b5dbb616bfb404ba7f6682b76cf18c510ee96b6a10535460fe416149·...·]-14">}</span><span·class="p">.</span></code></pre><p>This·code·adds·a·set·of·people·to·the·database.·Running·this·code·within·one |
| 6024 | transaction·ensures·that·either·the·whole·family·is·added·to·the·database,·or | 6024 | transaction·ensures·that·either·the·whole·family·is·added·to·the·database,·or |
| 6025 | the·whole·transaction·terminates.·For·example,·if·the·last·child·is·badly | 6025 | the·whole·transaction·terminates.·For·example,·if·the·last·child·is·badly |
| 6026 | formatted,·or·the·executing·process·terminates·because·of·an·<code·class="inline">'EXIT'</code>·signal | 6026 | formatted,·or·the·executing·process·terminates·because·of·an·<code·class="inline">'EXIT'</code>·signal |
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| Offset 155, 160 lines modified | Offset 155, 160 lines modified | ||
| 155 | </span><span·class="c1">%%</span><span·class="w"> | 155 | </span><span·class="c1">%%</span><span·class="w"> |
| 156 | </span><span·class="c1">%%·The·NewOpaqueData·arguments·returned·by·restore·callback·functions·will</span><span·class="w"> | 156 | </span><span·class="c1">%%·The·NewOpaqueData·arguments·returned·by·restore·callback·functions·will</span><span·class="w"> |
| 157 | </span><span·class="c1">%%·be·given·as·input·when·the·next·restore·callback·function·is·invoked</span><span·class="w"> | 157 | </span><span·class="c1">%%·be·given·as·input·when·the·next·restore·callback·function·is·invoked</span><span·class="w"> |
| 158 | </span><span·class="c1">%%·If·any·return·value·does·not·match·{ok,·_}·the·restore·will·be·aborted.</span><span·class="w"> | 158 | </span><span·class="c1">%%·If·any·return·value·does·not·match·{ok,·_}·the·restore·will·be·aborted.</span><span·class="w"> |
| 159 | </span><span·class="c1">%%</span><span·class="w"> | 159 | </span><span·class="c1">%%</span><span·class="w"> |
| 160 | </span><span·class="c1">%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</span><span·class="w"> | 160 | </span><span·class="c1">%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</span><span·class="w"> |
| 161 | </span><span·class="w"> | 161 | </span><span·class="w"> |
| 162 | </span><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 162 | </span><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="9547212116-1">(</span><span·class="ss">mnesia_backup</span><span·class="p"·data-group-id="9547212116-1">)</span><span·class="p">.</span><span·class="w"> |
| 163 | </span><span·class="w"> | 163 | </span><span·class="w"> |
| 164 | </span><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id=" | 164 | </span><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="9547212116-2">(</span><span·class="s">"kernel/include/file.hrl"</span><span·class="p"·data-group-id="9547212116-2">)</span><span·class="p">.</span><span·class="w"> |
| 165 | </span><span·class="w"> | 165 | </span><span·class="w"> |
| 166 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 166 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="9547212116-3">(</span><span·class="p"·data-group-id="9547212116-4">[</span><span·class="w"> |
| 167 | ·········</span><span·class="c1">%%·Write·access</span><span·class="w"> | 167 | ·········</span><span·class="c1">%%·Write·access</span><span·class="w"> |
| 168 | ·········</span><span·class="ss">open_write</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> | 168 | ·········</span><span·class="ss">open_write</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> |
| 169 | ·········</span><span·class="ss">write</span><span·class="p">/</span><span·class="mi">2</span><span·class="p">,</span><span·class="w"> | 169 | ·········</span><span·class="ss">write</span><span·class="p">/</span><span·class="mi">2</span><span·class="p">,</span><span·class="w"> |
| 170 | ·········</span><span·class="ss">commit_write</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> | 170 | ·········</span><span·class="ss">commit_write</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> |
| 171 | ·········</span><span·class="ss">abort_write</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> | 171 | ·········</span><span·class="ss">abort_write</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> |
| 172 | ·········</span><span·class="c1">%%·Read·access</span><span·class="w"> | 172 | ·········</span><span·class="c1">%%·Read·access</span><span·class="w"> |
| 173 | ·········</span><span·class="ss">open_read</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> | 173 | ·········</span><span·class="ss">open_read</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> |
| 174 | ·········</span><span·class="ss">read</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> | 174 | ·········</span><span·class="ss">read</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> |
| 175 | ·········</span><span·class="ss">close_read</span><span·class="p">/</span><span·class="mi">1</span><span·class="w"> | 175 | ·········</span><span·class="ss">close_read</span><span·class="p">/</span><span·class="mi">1</span><span·class="w"> |
| 176 | ········</span><span·class="p"·data-group-id=" | 176 | ········</span><span·class="p"·data-group-id="9547212116-4">]</span><span·class="p"·data-group-id="9547212116-3">)</span><span·class="p">.</span><span·class="w"> |
| 177 | </span><span·class="c1">%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</span><span·class="w"> | 177 | </span><span·class="c1">%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</span><span·class="w"> |
| 178 | </span><span·class="c1">%%·Backup·callback·interface</span><span·class="w"> | 178 | </span><span·class="c1">%%·Backup·callback·interface</span><span·class="w"> |
| 179 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 179 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="9547212116-5">(</span><span·class="ss">backup</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9547212116-6">{</span><span·class="ss">tmp_file</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">file</[·...·truncated·by·diffoscope;·len:·180,·SHA:·3d0f417b0cd906e97d907d789e3b9ccdf10b4af74b20428808cb9166b5b56860·...·]-5">)</span><span·class="p">.</span><span·class="w"> |
| 180 | </span><span·class="c1">%%·Opens·backup·media·for·write</span><span·class="w"> | 180 | </span><span·class="c1">%%·Opens·backup·media·for·write</span><span·class="w"> |
| 181 | </span><span·class="c1">%%</span><span·class="w"> | 181 | </span><span·class="c1">%%</span><span·class="w"> |
| 182 | </span><span·class="c1">%%·Returns·{ok,·OpaqueData}·or·{error,·Reason}</span><span·class="w"> | 182 | </span><span·class="c1">%%·Returns·{ok,·OpaqueData}·or·{error,·Reason}</span><span·class="w"> |
| 183 | </span><span·class="nf">open_write</span><span·class="p"·data-group-id=" | 183 | </span><span·class="nf">open_write</span><span·class="p"·data-group-id="9547212116-7">(</span><span·class="n">OpaqueData</span><span·class="p"·data-group-id="9547212116-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 184 | ····</span><span·class="n">File</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">OpaqueData</span><span·class="p">,</span><span·class="w"> | 184 | ····</span><span·class="n">File</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">OpaqueData</span><span·class="p">,</span><span·class="w"> |
| 185 | ····</span><span·class="n">Tmp</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">concat</span><span·class="p"·data-group-id=" | 185 | ····</span><span·class="n">Tmp</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">concat</span><span·class="p"·data-group-id="9547212116-8">(</span><span·class="p"·data-group-id="9547212116-9">[</span><span·class="n">File</span><span·class="p">,</span><span·class="s">".BUPTMP"</span><span·class="p"·data-group-id="9547212116-9">]</span><span·class="p"·data-group-id="9547[·...·truncated·by·diffoscope;·len:·6,·SHA:·70afea53e602490935d3dac6eb5fe5dfb87609e25a250f518c5bc46abe246df0·...·]-8">)</span><span·class="p">,</span><span·class="w"> |
| 186 | ····</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">delete</span><span·class="p"·data-group-id=" | 186 | ····</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">delete</span><span·class="p"·data-group-id="9547212116-10">(</span><span·class="n">Tmp</span><span·class="p"·data-group-id="9547212116-10">)</span><span·class="p">,</span><span·class="w"> |
| 187 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">disk_log</span><span·class="p">:</span><span·class="nf">open</span><span·class="p"·data-group-id=" | 187 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">disk_log</span><span·class="p">:</span><span·class="nf">open</span><span·class="p"·data-group-id="9547212116-11">(</span><span·class="p"·data-group-id="9547212116-12">[</span><span·class="p"·data-group-id="9547212116-13">{</span><span·class="ss">name</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">make_ref</span><span·class="p"·d[·...·truncated·by·diffoscope;·len:·132,·SHA:·7dd8e9a10ef67f23f548ffe9df0c40f660773834be46d613b25de57be92f3b66·...·]-13">}</span><span·class="p">,</span><span·class="w"> |
| 188 | ························</span><span·class="p"·data-group-id=" | 188 | ························</span><span·class="p"·data-group-id="9547212116-15">{</span><span·class="ss">file</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tmp</span><span·class="p"·data-group-id="9547212116-15">}</span><span·class="p">,</span><span·class="w"> |
| 189 | ························</span><span·class="p"·data-group-id=" | 189 | ························</span><span·class="p"·data-group-id="9547212116-16">{</span><span·class="ss">repair</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">false</span><span·class="p"·data-group-id="9547212116-16">}</span><span·class="p">,</span><span·class="w"> |
| 190 | ························</span><span·class="p"·data-group-id=" | 190 | ························</span><span·class="p"·data-group-id="9547212116-17">{</span><span·class="ss">linkto</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="9547212116-18">(</span><span·class="p"·data-group-id="9547212116-18">)</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·130,·SHA:·08fcac2fe935038f7d6e832110ba996e52bdcf521c33f58770f51353fdb9605c·...·]-11">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 191 | ········</span><span·class="p"·data-group-id=" | 191 | ········</span><span·class="p"·data-group-id="9547212116-19">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Fd</span><span·class="p"·data-group-id="9547212116-19">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 192 | ············</span><span·class="p"·data-group-id=" | 192 | ············</span><span·class="p"·data-group-id="9547212116-20">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">backup</span><span·class="p"·data-group-id="9547212116-21">{</span><span·class="ss">tmp_file</span><span·class="w">·</[·...·truncated·by·diffoscope;·len:·527,·SHA:·add2a8568a09e479a29e371b4f359721ca95cc3c3d4d3aa393987e48a695fb00·...·]-20">}</span><span·class="p">;</span><span·class="w"> |
| 193 | ········</span><span·class="p"·data-group-id=" | 193 | ········</span><span·class="p"·data-group-id="9547212116-22">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="p"·data-group-id="9547212116-22">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 194 | ············</span><span·class="p"·data-group-id=" | 194 | ············</span><span·class="p"·data-group-id="9547212116-23">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="p"·data-group-id="9547212116-23">}</span><span·class="w"> |
| 195 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 195 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 196 | </span><span·class="c1">%%·Writes·BackupItems·to·the·backup·media</span><span·class="w"> | 196 | </span><span·class="c1">%%·Writes·BackupItems·to·the·backup·media</span><span·class="w"> |
| 197 | </span><span·class="c1">%%</span><span·class="w"> | 197 | </span><span·class="c1">%%</span><span·class="w"> |
| 198 | </span><span·class="c1">%%·Returns·{ok,·OpaqueData}·or·{error,·Reason}</span><span·class="w"> | 198 | </span><span·class="c1">%%·Returns·{ok,·OpaqueData}·or·{error,·Reason}</span><span·class="w"> |
| 199 | </span><span·class="nf">write</span><span·class="p"·data-group-id=" | 199 | </span><span·class="nf">write</span><span·class="p"·data-group-id="9547212116-24">(</span><span·class="n">OpaqueData</span><span·class="p">,</span><span·class="w">·</span><span·class="n">BackupItems</span><span·class="p"·data-group-id="9547212116-24">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 200 | ····</span><span·class="n">B</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">OpaqueData</span><span·class="p">,</span><span·class="w"> | 200 | ····</span><span·class="n">B</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">OpaqueData</span><span·class="p">,</span><span·class="w"> |
| 201 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">disk_log</span><span·class="p">:</span><span·class="nf">log_terms</span><span·class="p"·data-group-id=" | 201 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">disk_log</span><span·class="p">:</span><span·class="nf">log_terms</span><span·class="p"·data-group-id="9547212116-25">(</span><span·class="n">B</span><span·class="o">#</span><span·class="ss">backup</span><span·class="p">.</span><span·class="ss">file_desc</span><span·class="p">,</span><span·class="w">·</span><span·class="n">BackupItems</span><span·class="p"·[·...·truncated·by·diffoscope;·len:·25,·SHA:·b93dae239c2b987d403ec9a64074bd32b754de099fcfa2f89bed05d02ba354ce·...·]-25">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 202 | ········</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 202 | ········</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 203 | ············</span><span·class="p"·data-group-id=" | 203 | ············</span><span·class="p"·data-group-id="9547212116-26">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">B</span><span·class="p"·data-group-id="9547212116-26">}</span><span·class="p">;</span><span·class="w"> |
| 204 | ········</span><span·class="p"·data-group-id=" | 204 | ········</span><span·class="p"·data-group-id="9547212116-27">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="p"·data-group-id="9547212116-27">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 205 | ············</span><span·class="nf">abort_write</span><span·class="p"·data-group-id=" | 205 | ············</span><span·class="nf">abort_write</span><span·class="p"·data-group-id="9547212116-28">(</span><span·class="n">B</span><span·class="p"·data-group-id="9547212116-28">)</span><span·class="p">,</span><span·class="w"> |
| 206 | ············</span><span·class="p"·data-group-id=" | 206 | ············</span><span·class="p"·data-group-id="9547212116-29">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="p"·data-group-id="9547212116-29">}</span><span·class="w"> |
| 207 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 207 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 208 | </span><span·class="c1">%%·Closes·the·backup·media·after·a·successful·backup</span><span·class="w"> | 208 | </span><span·class="c1">%%·Closes·the·backup·media·after·a·successful·backup</span><span·class="w"> |
| 209 | </span><span·class="c1">%%</span><span·class="w"> | 209 | </span><span·class="c1">%%</span><span·class="w"> |
| 210 | </span><span·class="c1">%%·Returns·{ok,·ReturnValueToUser}·or·{error,·Reason}</span><span·class="w"> | 210 | </span><span·class="c1">%%·Returns·{ok,·ReturnValueToUser}·or·{error,·Reason}</span><span·class="w"> |
| 211 | </span><span·class="nf">commit_write</span><span·class="p"·data-group-id=" | 211 | </span><span·class="nf">commit_write</span><span·class="p"·data-group-id="9547212116-30">(</span><span·class="n">OpaqueData</span><span·class="p"·data-group-id="9547212116-30">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 212 | ····</span><span·class="n">B</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">OpaqueData</span><span·class="p">,</span><span·class="w"> | 212 | ····</span><span·class="n">B</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">OpaqueData</span><span·class="p">,</span><span·class="w"> |
| 213 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">disk_log</span><span·class="p">:</span><span·class="nf">sync</span><span·class="p"·data-group-id=" | 213 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">disk_log</span><span·class="p">:</span><span·class="nf">sync</span><span·class="p"·data-group-id="9547212116-31">(</span><span·class="n">B</span><span·class="o">#</span><span·class="ss">backup</span><span·class="p">.</span><span·class="ss">file_desc</span><span·class="p"·data-group-id="9547212116-31">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 214 | ········</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 214 | ········</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 215 | ············</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">disk_log</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id=" | 215 | ············</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">disk_log</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id="9547212116-32">(</span><span·class="n">B</span><span·class="o">#</span><span·class="ss">backup</span><span·class="p">.</span><span·class="ss">file_desc</span><span·class="p"·data-group-id="9547212116-32">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 216 | ················</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 216 | ················</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 217 | ····················</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">delete</span><span·class="p"·data-group-id=" | 217 | ····················</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">delete</span><span·class="p"·data-group-id="9547212116-33">(</span><span·class="n">B</span><span·class="o">#</span><span·class="ss">backup</span><span·class="p">.</span><span·class="ss">file</span><span·class="p"·data-group-id="9547212116-33">)</span><span·class="p">,</span><span·class="w"> |
| 218 | ····················</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">rename</span><span·class="p"·data-group-id=" | 218 | ····················</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">rename</span><span·class="p"·data-group-id="9547212116-34">(</span><span·class="n">B</span><span·class="o">#</span><span·class="ss">backup</span><span·class="p">.</span><span·class="ss">tmp_file</span><span·class="p">,</span><span·class="w">·</span><span·class="n">B</span><span·class="o">#</span><sp[·...·truncated·by·diffoscope;·len:·120,·SHA:·cdd1661914a8eb17b8d79067d6fed4f90384483a7445513cb98be45be7bd8ad5·...·]-34">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 219 | ························</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 219 | ························</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 220 | ····························</span><span·class="p"·data-group-id=" | 220 | ····························</span><span·class="p"·data-group-id="9547212116-35">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">B</span><span·class="o">#</span><span·class="ss">backup</span><span·class="p">.</span><span·class="ss">file</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·12,·SHA:·97297599610620d43fc9cad542ccea96a8f3f1225401d9325c8359ebb94186df·...·]-35">}</span><span·class="p">;</span><span·class="w"> |
| 221 | ························</span><span·class="p"·data-group-id=" | 221 | ························</span><span·class="p"·data-group-id="9547212116-36">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="p"·data-group-id="9547212116-36">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 222 | ····························</span><span·class="p"·data-group-id=" | 222 | ····························</span><span·class="p"·data-group-id="9547212116-37">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="p"·data-group-id="9547212116-37">}</span><span·class="w"> |
| 223 | ····················</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> | 223 | ····················</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> |
| 224 | ················</span><span·class="p"·data-group-id=" | 224 | ················</span><span·class="p"·data-group-id="9547212116-38">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="p"·data-group-id="9547212116-38">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 225 | ····················</span><span·class="p"·data-group-id=" | 225 | ····················</span><span·class="p"·data-group-id="9547212116-39">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="p"·data-group-id="9547212116-39">}</span><span·class="w"> |
| 226 | ············</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> | 226 | ············</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> |
| 227 | ········</span><span·class="p"·data-group-id=" | 227 | ········</span><span·class="p"·data-group-id="9547212116-40">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="p"·data-group-id="9547212116-40">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 228 | ············</span><span·class="p"·data-group-id=" | 228 | ············</span><span·class="p"·data-group-id="9547212116-41">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="p"·data-group-id="9547212116-41">}</span><span·class="w"> |
| 229 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 229 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 230 | </span><span·class="c1">%%·Closes·the·backup·media·after·an·interrupted·backup</span><span·class="w"> | 230 | </span><span·class="c1">%%·Closes·the·backup·media·after·an·interrupted·backup</span><span·class="w"> |
| 231 | </span><span·class="c1">%%</span><span·class="w"> | 231 | </span><span·class="c1">%%</span><span·class="w"> |
| 232 | </span><span·class="c1">%%·Returns·{ok,·ReturnValueToUser}·or·{error,·Reason}</span><span·class="w"> | 232 | </span><span·class="c1">%%·Returns·{ok,·ReturnValueToUser}·or·{error,·Reason}</span><span·class="w"> |
| 233 | </span><span·class="nf">abort_write</span><span·class="p"·data-group-id=" | 233 | </span><span·class="nf">abort_write</span><span·class="p"·data-group-id="9547212116-42">(</span><span·class="n">BackupRef</span><span·class="p"·data-group-id="9547212116-42">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 234 | ····</span><span·class="n">Res</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">disk_log</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id=" | 234 | ····</span><span·class="n">Res</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">disk_log</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id="9547212116-43">(</span><span·class="n">BackupRef</span><span·class="o">#</span><span·class="ss">backup</span><span·class="p">.</span><span·class="ss">file_desc</span><span·class="p"·data-group-id="9547212116-43">)</span><span·class="p">,</span><span·class="w"> |
| 235 | ····</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">delete</span><span·class="p"·data-group-id=" | 235 | ····</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">delete</span><span·class="p"·data-group-id="9547212116-44">(</span><span·class="n">BackupRef</span><span·class="o">#</span><span·class="ss">backup</span><span·class="p">.</span><span·class="ss">tmp_file</span><span·class="p"·data-group-id="9547212116-44">)</span><span·class="p">,</span><span·class="w"> |
| 236 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="n">Res</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> | 236 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="n">Res</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 237 | ········</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 237 | ········</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 238 | ············</span><span·class="p"·data-group-id=" | 238 | ············</span><span·class="p"·data-group-id="9547212116-45">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">BackupRef</span><span·class="o">#</span><span·class="ss">backup</span><span·class="p">.</span><span·class="ss">file</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·20,·SHA:·87002d665aedc3c1cf7632847ec124e290277072e1f7932f49627ca064f07f78·...·]-45">}</span><span·class="p">;</span><span·class="w"> |
| 239 | ········</span><span·class="p"·data-group-id=" | 239 | ········</span><span·class="p"·data-group-id="9547212116-46">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="p"·data-group-id="9547212116-46">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 240 | ············</span><span·class="p"·data-group-id=" | 240 | ············</span><span·class="p"·data-group-id="9547212116-47">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="p"·data-group-id="9547212116-47">}</span><span·class="w"> |
| 241 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 241 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 242 | </span><span·class="c1">%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</span><span·class="w"> | 242 | </span><span·class="c1">%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</span><span·class="w"> |
| 243 | </span><span·class="c1">%%·Restore·callback·interface</span><span·class="w"> | 243 | </span><span·class="c1">%%·Restore·callback·interface</span><span·class="w"> |
| 244 | </span><span·class="w"> | 244 | </span><span·class="w"> |
| 245 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 245 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="9547212116-48">(</span><span·class="ss">restore</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9547212116-49">{</span><span·class="ss">file</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">file_de[·...·truncated·by·diffoscope;·len:·180,·SHA:·24de490548ba189b77b0af00a973f9fb8fd56b178a941ca22cbbf5008ad9a425·...·]-48">)</span><span·class="p">.</span><span·class="w"> |
| 246 | </span><span·class="c1">%%·Opens·backup·media·for·read</span><span·class="w"> | 246 | </span><span·class="c1">%%·Opens·backup·media·for·read</span><span·class="w"> |
| 247 | </span><span·class="c1">%%</span><span·class="w"> | 247 | </span><span·class="c1">%%</span><span·class="w"> |
| 248 | </span><span·class="c1">%%·Returns·{ok,·OpaqueData}·or·{error,·Reason}</span><span·class="w"> | 248 | </span><span·class="c1">%%·Returns·{ok,·OpaqueData}·or·{error,·Reason}</span><span·class="w"> |
| 249 | </span><span·class="nf">open_read</span><span·class="p"·data-group-id=" | 249 | </span><span·class="nf">open_read</span><span·class="p"·data-group-id="9547212116-50">(</span><span·class="n">OpaqueData</span><span·class="p"·data-group-id="9547212116-50">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 250 | ····</span><span·class="n">File</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">OpaqueData</span><span·class="p">,</span><span·class="w"> | 250 | ····</span><span·class="n">File</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">OpaqueData</span><span·class="p">,</span><span·class="w"> |
| 251 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">read_file_info</span><span·class="p"·data-group-id=" | 251 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">read_file_info</span><span·class="p"·data-group-id="9547212116-51">(</span><span·class="n">File</span><span·class="p"·data-group-id="9547212116-51">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 252 | ········</span><span·class="p"·data-group-id=" | 252 | ········</span><span·class="p"·data-group-id="9547212116-52">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="p"·data-group-id="9547212116-52">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 253 | ············</span><span·class="p"·data-group-id=" | 253 | ············</span><span·class="p"·data-group-id="9547212116-53">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="p"·data-group-id="9547212116-53">}</span><span·class="p">;</span><span·class="w"> |
| 254 | ········</span><span·class="p">_</span><span·class="n">FileInfo</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="c1">%%·file·exists</span><span·class="w"> | 254 | ········</span><span·class="p">_</span><span·class="n">FileInfo</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="c1">%%·file·exists</span><span·class="w"> |
| 255 | ············</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">disk_log</span><span·class="p">:</span><span·class="nf">open</span><span·class="p"·data-group-id=" | 255 | ············</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">disk_log</span><span·class="p">:</span><span·class="nf">open</span><span·class="p"·data-group-id="9547212116-54">(</span><span·class="p"·data-group-id="9547212116-55">[</span><span·class="p"·data-group-id="9547212116-56">{</span><span·class="ss">file</span><span·class="p">,</span><span·class="w">·</span><span·class="n">File</span><span·class="p"·data-g[·...·truncated·by·diffoscope;·len:·19,·SHA:·1d8730099261c7249621dc955c076f3c3b3a7e5b9d1ce7742519b2f48531448d·...·]-56">}</span><span·class="p">,</span><span·class="w"> |
| 256 | ································</span><span·class="p"·data-group-id=" | 256 | ································</span><span·class="p"·data-group-id="9547212116-57">{</span><span·class="ss">name</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">make_ref</span><span·class="p"·data-group-id="9547212116-58">(</span><span·class="p"·data-group-id="9547212116-58">)</span><span·class="p"·d[·...·truncated·by·diffoscope;·len:·24,·SHA:·111575f303c0c216d2a067acbaae24d4f600d2f8e22fcd2b91f5462d1f7f9a50·...·]-57">}</span><span·class="p">,</span><span·class="w"> |
| 257 | ································</span><span·class="p"·data-group-id=" | 257 | ································</span><span·class="p"·data-group-id="9547212116-59">{</span><span·class="ss">repair</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">false</span><span·class="p"·data-group-id="9547212116-59">}</span><span·class="p">,</span><span·class="w"> |
| 258 | ································</span><span·class="p"·data-group-id=" | 258 | ································</span><span·class="p"·data-group-id="9547212116-60">{</span><span·class="ss">mode</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">read_only</span><span·class="p"·data-group-id="9547212116-60">}</span><span·class="p">,</span><span·class="w"> |
| 259 | ································</span><span·class="p"·data-group-id=" | 259 | ································</span><span·class="p"·data-group-id="9547212116-61">{</span><span·class="ss">linkto</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="9547212116-62">(</span><span·class="p"·data-group-id="9547212116-62">)</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·130,·SHA:·d150cbd4ed295cc9c740581614ae128f970eb030505379a946c9dc53ab157440·...·]-54">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 260 | ················</span><span·class="p"·data-group-id=" | 260 | ················</span><span·class="p"·data-group-id="9547212116-63">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Fd</span><span·class="p"·data-group-id="9547212116-63">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 261 | ····················</span><span·class="p"·data-group-id=" | 261 | ····················</span><span·class="p"·data-group-id="9547212116-64">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">restore</span><span·class="p"·data-group-id="9547212116-65">{</span><span·class="ss">file</span><span·class="w">·</spa[·...·truncated·by·diffoscope;·len:·527,·SHA:·7b174e98158e6be033122be5e3e91e4539e31284da946b42fe89b62d555c78c3·...·]-64">}</span><span·class="p">;</span><span·class="w"> |
| 262 | ················</span><span·class="p"·data-group-id=" | 262 | ················</span><span·class="p"·data-group-id="9547212116-66">{</span><span·class="ss">repaired</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Fd</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·cl[·...·truncated·by·diffoscope;·len:·246,·SHA:·04db68842f5698309d6171f35e8066f13450dabab18b0bf429e46d978a4f7a3d·...·]-66">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 263 | ····················</span><span·class="p"·data-group-id=" | 263 | ····················</span><span·class="p"·data-group-id="9547212116-68">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">restore</span><span·class="p"·data-group-id="9547212116-69">{</span><span·class="ss">file</span><span·class="w">·</spa[·...·truncated·by·diffoscope;·len:·527,·SHA:·5dc388813f0374605e31d810965694dfd478c501e170f49a633cdbfd4409a3b7·...·]-68">}</span><span·class="p">;</span><span·class="w"> |
| 264 | ················</span><span·class="p"·data-group-id=" | 264 | ················</span><span·class="p"·data-group-id="9547212116-70">{</span><span·class="ss">repaired</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Fd</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·cl[·...·truncated·by·diffoscope;·len:·57,·SHA:·b0a35e0d3f3f06fad564fc31aa3b3fe62a99db157eab3634953fd88b965a2548·...·]-70">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 265 | ····················</span><span·class="p"·data-group-id=" | 265 | ····················</span><span·class="p"·data-group-id="9547212116-71">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">restore</span><span·class="p"·data-group-id="9547212116-72">{</span><span·class="ss">file</span><span·class="w">·</spa[·...·truncated·by·diffoscope;·len:·527,·SHA:·4ff6f12a90f551ab6875fefda3c5d11b5cb5817c86622828e8d888a49afbe231·...·]-71">}</span><span·class="p">;</span><span·class="w"> |
| 266 | ················</span><span·class="p"·data-group-id=" | 266 | ················</span><span·class="p"·data-group-id="9547212116-73">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="p"·data-group-id="9547212116-73">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 267 | ····················</span><span·class="p"·data-group-id=" | 267 | ····················</span><span·class="p"·data-group-id="9547212116-74">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="p"·data-group-id="9547212116-74">}</span><span·class="w"> |
| 268 | ············</span><span·class="k">end</span><span·class="w"> | 268 | ············</span><span·class="k">end</span><span·class="w"> |
| 269 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 269 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 270 | </span><span·class="c1">%%·Reads·BackupItems·from·the·backup·media</span><span·class="w"> | 270 | </span><span·class="c1">%%·Reads·BackupItems·from·the·backup·media</span><span·class="w"> |
| 271 | </span><span·class="c1">%%</span><span·class="w"> | 271 | </span><span·class="c1">%%</span><span·class="w"> |
| 272 | </span><span·class="c1">%%·Returns·{ok,·OpaqueData,·BackupItems}·or·{error,·Reason}</span><span·class="w"> | 272 | </span><span·class="c1">%%·Returns·{ok,·OpaqueData,·BackupItems}·or·{error,·Reason}</span><span·class="w"> |
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| Offset 127, 262 lines modified | Offset 127, 262 lines modified | ||
| 127 | <h2·id="mnesia_access-callback-behavior"·class="section-heading"> | 127 | <h2·id="mnesia_access-callback-behavior"·class="section-heading"> |
| 128 | ··<a·href="#mnesia_access-callback-behavior"·class="hover-link"> | 128 | ··<a·href="#mnesia_access-callback-behavior"·class="hover-link"> |
| 129 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 129 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 130 | ··</a> | 130 | ··</a> |
| 131 | ··<span·class="text">mnesia_access·Callback·Behavior</span> | 131 | ··<span·class="text">mnesia_access·Callback·Behavior</span> |
| 132 | </h2> | 132 | </h2> |
| 133 | <pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 133 | <pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="7155763362-1">(</span><span·class="ss">mnesia_frag</span><span·class="p"·data-group-id="7155763362-1">)</span><span·class="p">.</span><span·class="w"> |
| 134 | </span><span·class="c1">%%·Callback·functions·when·accessed·within·an·activity</span><span·class="w"> | 134 | </span><span·class="c1">%%·Callback·functions·when·accessed·within·an·activity</span><span·class="w"> |
| 135 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 135 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="7155763362-2">(</span><span·class="p"·data-group-id="7155763362-3">[</span><span·class="w"> |
| 136 | ·········</span><span·class="ss">lock</span><span·class="p">/</span><span·class="mi">4</span><span·class="p">,</span><span·class="w"> | 136 | ·········</span><span·class="ss">lock</span><span·class="p">/</span><span·class="mi">4</span><span·class="p">,</span><span·class="w"> |
| 137 | ·········</span><span·class="ss">write</span><span·class="p">/</span><span·class="mi">5</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">delete</span><span·class="p">/</span><span·class="mi">5</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">delete_object</span><span·class="p">/</span><span·class="mi">5</span><span·class="p">,</span><span·class="w"> | 137 | ·········</span><span·class="ss">write</span><span·class="p">/</span><span·class="mi">5</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">delete</span><span·class="p">/</span><span·class="mi">5</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">delete_object</span><span·class="p">/</span><span·class="mi">5</span><span·class="p">,</span><span·class="w"> |
| 138 | ·········</span><span·class="ss">read</span><span·class="p">/</span><span·class="mi">5</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">match_object</span><span·class="p">/</span><span·class="mi">5</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">all_keys</span><span·class="p">/</span><span·class="mi">4</span><span·class="p">,</span><span·class="w"> | 138 | ·········</span><span·class="ss">read</span><span·class="p">/</span><span·class="mi">5</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">match_object</span><span·class="p">/</span><span·class="mi">5</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">all_keys</span><span·class="p">/</span><span·class="mi">4</span><span·class="p">,</span><span·class="w"> |
| 139 | ·········</span><span·class="ss">select</span><span·class="p">/</span><span·class="mi">5</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">select</span><span·class="p">/</span><span·class="mi">6</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">select_cont</span><span·class="p">/</span><span·class="mi">3</span><span·class="p">,</span><span·class="w"> | 139 | ·········</span><span·class="ss">select</span><span·class="p">/</span><span·class="mi">5</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">select</span><span·class="p">/</span><span·class="mi">6</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">select_cont</span><span·class="p">/</span><span·class="mi">3</span><span·class="p">,</span><span·class="w"> |
| 140 | ·········</span><span·class="ss">index_match_object</span><span·class="p">/</span><span·class="mi">6</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">index_read</span><span·class="p">/</span><span·class="mi">6</span><span·class="p">,</span><span·class="w"> | 140 | ·········</span><span·class="ss">index_match_object</span><span·class="p">/</span><span·class="mi">6</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">index_read</span><span·class="p">/</span><span·class="mi">6</span><span·class="p">,</span><span·class="w"> |
| 141 | ·········</span><span·class="ss">foldl</span><span·class="p">/</span><span·class="mi">6</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">foldr</span><span·class="p">/</span><span·class="mi">6</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">table_info</span><span·class="p">/</span><span·class="mi">4</span><span·class="p">,</span><span·class="w"> | 141 | ·········</span><span·class="ss">foldl</span><span·class="p">/</span><span·class="mi">6</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">foldr</span><span·class="p">/</span><span·class="mi">6</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">table_info</span><span·class="p">/</span><span·class="mi">4</span><span·class="p">,</span><span·class="w"> |
| 142 | ·········</span><span·class="ss">first</span><span·class="p">/</span><span·class="mi">3</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">next</span><span·class="p">/</span><span·class="mi">4</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">prev</span><span·class="p">/</span><span·class="mi">4</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">last</span><span·class="p">/</span><span·class="mi">3</span><span·class="p">,</span><span·class="w"> | 142 | ·········</span><span·class="ss">first</span><span·class="p">/</span><span·class="mi">3</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">next</span><span·class="p">/</span><span·class="mi">4</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">prev</span><span·class="p">/</span><span·class="mi">4</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">last</span><span·class="p">/</span><span·class="mi">3</span><span·class="p">,</span><span·class="w"> |
| 143 | ·········</span><span·class="ss">clear_table</span><span·class="p">/</span><span·class="mi">4</span><span·class="w"> | 143 | ·········</span><span·class="ss">clear_table</span><span·class="p">/</span><span·class="mi">4</span><span·class="w"> |
| 144 | ········</span><span·class="p"·data-group-id=" | 144 | ········</span><span·class="p"·data-group-id="7155763362-3">]</span><span·class="p"·data-group-id="7155763362-2">)</span><span·class="p">.</span><span·class="w"> |
| 145 | </span><span·class="c1">%%·Callback·functions·which·provides·transparent</span><span·class="w"> | 145 | </span><span·class="c1">%%·Callback·functions·which·provides·transparent</span><span·class="w"> |
| 146 | </span><span·class="c1">%%·access·of·fragmented·tables·from·any·activity</span><span·class="w"> | 146 | </span><span·class="c1">%%·access·of·fragmented·tables·from·any·activity</span><span·class="w"> |
| 147 | </span><span·class="c1">%%·access·context.</span><span·class="w"> | 147 | </span><span·class="c1">%%·access·context.</span><span·class="w"> |
| 148 | </span><span·class="nf">lock</span><span·class="p"·data-group-id=" | 148 | </span><span·class="nf">lock</span><span·class="p"·data-group-id="7155763362-4">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opaque</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7155763362-5">{</span><span·class="ss">table<[·...·truncated·by·diffoscope;·len:·276,·SHA:·e19f185371dc1bde911ae45714e4cfa1400ceab05823a90e829bf29e1c8ffd06·...·]2-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 149 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">frag_names</span><span·class="p"·data-group-id=" | 149 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">frag_names</span><span·class="p"·data-group-id="7155763362-6">(</span><span·class="n">Tab</span><span·class="p"·data-group-id="7155763362-6">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 150 | ········</span><span·class="p"·data-group-id=" | 150 | ········</span><span·class="p"·data-group-id="7155763362-7">[</span><span·class="n">Tab</span><span·class="p"·data-group-id="7155763362-7">]</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 151 | ············</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">lock</span><span·class="p"·data-group-id=" | 151 | ············</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">lock</span><span·class="p"·data-group-id="7155763362-8">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opaque</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7155763362-9">{</span><span·class="ss">table<[·...·truncated·by·diffoscope;·len:·252,·SHA:·46fcc2cbbc7d6f61d6261e231da16d303f562c91b53ab1af3038b13869f389c4·...·]2-8">)</span><span·class="p">;</span><span·class="w"> |
| 152 | ········</span><span·class="n">Frags</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 152 | ········</span><span·class="n">Frags</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 153 | ············</span><span·class="n">DeepNs</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 153 | ············</span><span·class="n">DeepNs</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7155763362-10">[</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">lock</span><span·class="p"·data-group-id="7155763362-11">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">[·...·truncated·by·diffoscope;·len:·389,·SHA:·65513ab1ca6028ce94f1d5b03481ec4d752c09bee9eb745f4e827c5b92f487bb·...·]2-11">)</span><span·class="w">·</span><span·class="p">||</span><span·class="w"> |
| 154 | ·························</span><span·class="n">F</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="n">Frags</span><span·class="p"·data-group-id=" | 154 | ·························</span><span·class="n">F</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="n">Frags</span><span·class="p"·data-group-id="7155763362-10">]</span><span·class="p">,</span><span·class="w"> |
| 155 | ············</span><span·class="nc">mnesia_lib</span><span·class="p">:</span><span·class="nf">uniq</span><span·class="p"·data-group-id=" | 155 | ············</span><span·class="nc">mnesia_lib</span><span·class="p">:</span><span·class="nf">uniq</span><span·class="p"·data-group-id="7155763362-13">(</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id="7155763362-14">(</span><span·class="n">DeepNs</span><span·class="p"·data-group-id="7155763362-14">)</span><span·class="[·...·truncated·by·diffoscope;·len:·27,·SHA:·9350c29814efa38ac4b4dd073787a0dbd66e1a94df2575f454e44237950b1aab·...·]2-13">)</span><span·class="w"> |
| 156 | ····</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> | 156 | ····</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> |
| 157 | </span><span·class="nf">lock</span><span·class="p"·data-group-id=" | 157 | </span><span·class="nf">lock</span><span·class="p"·data-group-id="7155763362-15">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opaque</span><span·class="p">,</span><span·class="w">·</span><span·class="n">LockItem</span><span·class="p">,</span><span·class="w">·</s[·...·truncated·by·diffoscope;·len:·75,·SHA:·139bf11d9a47d07c070c28591c4c3880fb963c66ebbfdfb0988cbb3b629f4fde·...·]2-15">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 158 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">lock</span><span·class="p"·data-group-id=" | 158 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">lock</span><span·class="p"·data-group-id="7155763362-16">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opaque</span><span·class="p">,</span><span·class="w">·</span><span·class="n">LockItem</span><span·class="p">,</span><span·class="w">·</s[·...·truncated·by·diffoscope;·len:·75,·SHA:·139bf11d9a47d07c070c28591c4c3880fb963c66ebbfdfb0988cbb3b629f4fde·...·]2-16">)</span><span·class="p">.</span><span·class="w"> |
| 159 | </span><span·class="nf">write</span><span·class="p"·data-group-id=" | 159 | </span><span·class="nf">write</span><span·class="p"·data-group-id="7155763362-17">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opaque</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·144,·SHA:·1f07db69246b5011d5a905aa9a129299c4fb323b2f9cf61cb01fb64db21aefaf·...·]2-17">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 160 | ····</span><span·class="n">Frag</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">record_to_frag_name</span><span·class="p"·data-group-id=" | 160 | ····</span><span·class="n">Frag</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">record_to_frag_name</span><span·class="p"·data-group-id="7155763362-18">(</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Rec</span><span·class="p"·data-group-id="7155763362-18">)</span><span·class="p">,</span><span·class="w"> |
| 161 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id=" | 161 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id="7155763362-19">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opaque</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Frag</span><span·class="p">,</span><span·class="w">·</span>[·...·truncated·by·diffoscope;·len:·145,·SHA:·adb347a524979daf31b76eba054d9abecf5d697dc49473d2f1e898a3d1123f74·...·]2-19">)</span><span·class="p">.</span><span·class="w"> |
| 162 | </span><span·class="nf">delete</span><span·class="p"·data-group-id=" | 162 | </span><span·class="nf">delete</span><span·class="p"·data-group-id="7155763362-20">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opaque</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·144,·SHA:·2ca54ba15fa5fd3d175bd807ec5bab8bff44b9e75b2c586f5f2b5981b02b8f4d·...·]2-20">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 163 | ····</span><span·class="n">Frag</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">key_to_frag_name</span><span·class="p"·data-group-id=" | 163 | ····</span><span·class="n">Frag</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">key_to_frag_name</span><span·class="p"·data-group-id="7155763362-21">(</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Key</span><span·class="p"·data-group-id="7155763362-21">)</span><span·class="p">,</span><span·class="w"> |
| 164 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">delete</span><span·class="p"·data-group-id=" | 164 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">delete</span><span·class="p"·data-group-id="7155763362-22">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opaque</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Frag</span><span·class="p">,</span><span·class="w">·</span>[·...·truncated·by·diffoscope;·len:·145,·SHA:·cb5d4aad58abefa6c7c0ea865eab5218559b1bac19f0d033cbcb7876327cbef1·...·]2-22">)</span><span·class="p">.</span><span·class="w"> |
| 165 | </span><span·class="nf">delete_object</span><span·class="p"·data-group-id=" | 165 | </span><span·class="nf">delete_object</span><span·class="p"·data-group-id="7155763362-23">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opaque</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·144,·SHA:·1f07db69246b5011d5a905aa9a129299c4fb323b2f9cf61cb01fb64db21aefaf·...·]2-23">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 166 | ····</span><span·class="n">Frag</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">record_to_frag_name</span><span·class="p"·data-group-id=" | 166 | ····</span><span·class="n">Frag</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">record_to_frag_name</span><span·class="p"·data-group-id="7155763362-24">(</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Rec</span><span·class="p"·data-group-id="7155763362-24">)</span><span·class="p">,</span><span·class="w"> |
| 167 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">delete_object</span><span·class="p"·data-group-id=" | 167 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">delete_object</span><span·class="p"·data-group-id="7155763362-25">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opaque</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Frag</span><span·class="p">,</span><span·class="w">·</span>[·...·truncated·by·diffoscope;·len:·145,·SHA:·adb347a524979daf31b76eba054d9abecf5d697dc49473d2f1e898a3d1123f74·...·]2-25">)</span><span·class="p">.</span><span·class="w"> |
| 168 | </span><span·class="nf">read</span><span·class="p"·data-group-id=" | 168 | </span><span·class="nf">read</span><span·class="p"·data-group-id="7155763362-26">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opaque</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·144,·SHA:·2ca54ba15fa5fd3d175bd807ec5bab8bff44b9e75b2c586f5f2b5981b02b8f4d·...·]2-26">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 169 | ····</span><span·class="n">Frag</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">key_to_frag_name</span><span·class="p"·data-group-id=" | 169 | ····</span><span·class="n">Frag</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">key_to_frag_name</span><span·class="p"·data-group-id="7155763362-27">(</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Key</span><span·class="p"·data-group-id="7155763362-27">)</span><span·class="p">,</span><span·class="w"> |
| 170 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">read</span><span·class="p"·data-group-id=" | 170 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">read</span><span·class="p"·data-group-id="7155763362-28">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opaque</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Frag</span><span·class="p">,</span><span·class="w">·</span>[·...·truncated·by·diffoscope;·len:·145,·SHA:·cb5d4aad58abefa6c7c0ea865eab5218559b1bac19f0d033cbcb7876327cbef1·...·]2-28">)</span><span·class="p">.</span><span·class="w"> |
| 171 | </span><span·class="nf">match_object</span><span·class="p"·data-group-id=" | 171 | </span><span·class="nf">match_object</span><span·class="p"·data-group-id="7155763362-29">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opaque</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·148,·SHA:·a95bf7ca48c6eb26555d343dae6234d07b6a73bac544cc437ecfb678b5befd09·...·]2-29">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 172 | ····</span><span·class="n">MatchSpec</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 172 | ····</span><span·class="n">MatchSpec</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7155763362-30">[</span><span·class="p"·data-group-id="7155763362-31">{</span><span·class="n">HeadPat</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7155763362-32">[</span><span·class="p"·data-group-id="7155763362-32">][·...·truncated·by·diffoscope;·len:·293,·SHA:·28ce04df47fafc27dc4b9d6f14df909c9dc5606f5396563c7ed08d6858eb4189·...·]2-30">]</span><span·class="p">,</span><span·class="w"> |
| 173 | ····</span><span·class="nf">select</span><span·class="p"·data-group-id=" | 173 | ····</span><span·class="nf">select</span><span·class="p"·data-group-id="7155763362-34">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opaque</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·150,·SHA:·648234bdcc51660f270a6087c73e468d1726332d173dbd1c055a89c0b6c5adfe·...·]2-34">)</span><span·class="p">.</span><span·class="w"> |
| 174 | </span><span·class="nf">select</span><span·class="p"·data-group-id=" | 174 | </span><span·class="nf">select</span><span·class="p"·data-group-id="7155763362-35">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opaque</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·150,·SHA:·648234bdcc51660f270a6087c73e468d1726332d173dbd1c055a89c0b6c5adfe·...·]2-35">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 175 | ····</span><span·class="nf">do_select</span><span·class="p"·data-group-id=" | 175 | ····</span><span·class="nf">do_select</span><span·class="p"·data-group-id="7155763362-36">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opaque</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·150,·SHA:·648234bdcc51660f270a6087c73e468d1726332d173dbd1c055a89c0b6c5adfe·...·]2-36">)</span><span·class="p">.</span><span·class="w"> |
| 176 | </span><span·class="nf">select</span><span·class="p"·data-group-id=" | 176 | </span><span·class="nf">select</span><span·class="p"·data-group-id="7155763362-37">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opaque</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·226,·SHA:·62a24e60f2b535a9c2c83f86b8fd5118a24ae44ce787a01e44396e9caaf35630·...·]2-37">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 177 | ····</span><span·class="nf">init_select</span><span·class="p"·data-group-id=" | 177 | ····</span><span·class="nf">init_select</span><span·class="p"·data-group-id="7155763362-38">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opaque</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·226,·SHA:·62a24e60f2b535a9c2c83f86b8fd5118a24ae44ce787a01e44396e9caaf35630·...·]2-38">)</span><span·class="p">.</span><span·class="w"> |
| 178 | </span><span·class="nf">select_cont</span><span·class="p"·data-group-id=" | 178 | </span><span·class="nf">select_cont</span><span·class="p"·data-group-id="7155763362-39">(</span><span·class="p">_</span><span·class="n">Tid</span><span·class="p">,</span><span·class="p">_</span><span·class="p">,</span><span·class="p"·data-group-id="7155763362-40">{</span><span·class="ss">frag_cont</span><span·class="p">,</span>[·...·truncated·by·diffoscope;·len:·369,·SHA:·3332277525d23e49e24a60deac7cdeac6a1624049c6431043ebdbe3cb92f65d1·...·]2-39">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">'$end_of_table'</span><span·class="p">;</span><span·class="w"> |
| 179 | </span><span·class="nf">select_cont</span><span·class="p"·data-group-id=" | 179 | </span><span·class="nf">select_cont</span><span·class="p"·data-group-id="7155763362-42">(</span><span·class="n">Tid</span><span·class="p">,</span><span·class="n">Ts</span><span·class="p">,</span><span·class="p"·data-group-id="7155763362-43">{</span><span·class="ss">frag_cont</span><span·class="p">,</span><span·class="w">·</span[·...·truncated·by·diffoscope;·len:·636,·SHA:·b4ff197d085ca146cc51c20ef24b640d30bb538819f27dd711803a9ad74f880b·...·]2-42">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 180 | ····</span><span·class="p"·data-group-id=" | 180 | ····</span><span·class="p"·data-group-id="7155763362-46">{</span><span·class="n">Spec</span><span·class="p">,</span><span·class="n">LockKind</span><span·class="p">,</span><span·class="n">Limit</span><span·class="p"·data-group-id="7155763362-46">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Args</span><span·class="p">,</span><span·class="w"> |
| 181 | ····</span><span·class="n">InitFun</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 181 | ····</span><span·class="n">InitFun</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="7155763362-47">(</span><span·class="n">FixedSpec</span><span·class="p"·data-group-id="7155763362-47">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">[·...·truncated·by·diffoscope;·len:·351,·SHA:·18b279d576f2f1395b46247b04eab78d87924ee4400a64fc4baec31ca5d74f9a·...·]2-48">)</span><span·class="w">·</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 182 | ····</span><span·class="n">Res</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">fun_select</span><span·class="p"·data-group-id=" | 182 | ····</span><span·class="n">Res</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">fun_select</span><span·class="p"·data-group-id="7155763362-49">(</span><span·class="n">Tid</span><span·class="p">,</span><span·class="n">Ts</span><span·class="p">,</span><span·class="n">Tab</span><span·class="p">,</span><span·class="n">Spec</span><span·class="p">,</span><span·class="n">LockKind</span><s[·...·truncated·by·diffoscope;·len:·296,·SHA:·dcf7edeab4df448b69e5fd9b1d2f75b2b8afbdc266e2426ac03a1540251a4af7·...·]2-49">)</span><span·class="p">,</span><span·class="w"> |
| 183 | ····</span><span·class="nf">frag_sel_cont</span><span·class="p"·data-group-id=" | 183 | ····</span><span·class="nf">frag_sel_cont</span><span·class="p"·data-group-id="7155763362-50">(</span><span·class="n">Res</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Rest</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Args</span><span·class="p"·data-group-id="7155763362-50">)</span><span·class="p">;</span><span·class="w"> |
| 184 | </span><span·class="nf">select_cont</span><span·class="p"·data-group-id=" | 184 | </span><span·class="nf">select_cont</span><span·class="p"·data-group-id="7155763362-51">(</span><span·class="n">Tid</span><span·class="p">,</span><span·class="n">Ts</span><span·class="p">,</span><span·class="p"·data-group-id="7155763362-52">{</span><span·class="ss">frag_cont</span><span·class="p">,</span><span·class="w">·</span[·...·truncated·by·diffoscope;·len:·272,·SHA:·068759f0acfb4f3ea3368d891590efe29d31015319e817d6ea508220c8d2483d·...·]2-51">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 185 | ····</span><span·class="nf">frag_sel_cont</span><span·class="p"·data-group-id=" | 185 | ····</span><span·class="nf">frag_sel_cont</span><span·class="p"·data-group-id="7155763362-53">(</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">select_cont</span><span·class="p"·data-group-id="7155763362-54">(</span><span·class="n">Tid</span><span·class="p">,</span><span·class="n">Ts</span><span·class="p"[·...·truncated·by·diffoscope;·len:·232,·SHA:·5555c52f27bb129195969bd54e9b3f3e576c0492e0ec882ee0bddae22c637fa6·...·]2-53">)</span><span·class="p">;</span><span·class="w"> |
| 186 | </span><span·class="nf">select_cont</span><span·class="p"·data-group-id=" | 186 | </span><span·class="nf">select_cont</span><span·class="p"·data-group-id="7155763362-55">(</span><span·class="n">Tid</span><span·class="p">,</span><span·class="n">Ts</span><span·class="p">,</span><span·class="n">Else</span><span·class="p"·data-group-id="7155763362-55">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 187 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">select_cont</span><span·class="p"·data-group-id=" | 187 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">select_cont</span><span·class="p"·data-group-id="7155763362-56">(</span><span·class="n">Tid</span><span·class="p">,</span><span·class="n">Ts</span><span·class="p">,</span><span·class="n">Else</span><span·class="p"·data-group-id="7155763362-56">)</span><span·class="p">.</span><span·class="w"> |
| 188 | </span><span·class="nf">all_keys</span><span·class="p"·data-group-id=" | 188 | </span><span·class="nf">all_keys</span><span·class="p"·data-group-id="7155763362-57">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opaque</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·70,·SHA:·06411a14097c54fb3b37781e608198fb6132481189a6071020993b12b28da5dd·...·]2-57">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 189 | ····</span><span·class="n">Match</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 189 | ····</span><span·class="n">Match</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7155763362-58">[</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">all_keys</span><span·class="p"·data-group-id="7155763362-59">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class=[·...·truncated·by·diffoscope;·len:·211,·SHA:·15d0ca14402100a24dd198df3888b70bfabffb269ace2722a394ecfaa717f255·...·]2-59">)</span><span·class="w"> |
| 190 | ·············</span><span·class="p">||</span><span·class="w">·</span><span·class="n">Frag</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="nf">frag_names</span><span·class="p"·data-group-id=" | 190 | ·············</span><span·class="p">||</span><span·class="w">·</span><span·class="n">Frag</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="nf">frag_names</span><span·class="p"·data-group-id="7155763362-60">(</span><span·class="n">Tab</span><span·class="p"·data-group-id="7155763362-60">)</span><span·class="p"·data-group-id="7155763362-58">]</span><span·class="p">,</span><span·class="w"> |
| 191 | ····</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id=" | 191 | ····</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id="7155763362-61">(</span><span·class="n">Match</span><span·class="p"·data-group-id="7155763362-61">)</span><span·class="p">.</span><span·class="w"> |
| 192 | </span><span·class="nf">clear_table</span><span·class="p"·data-group-id=" | 192 | </span><span·class="nf">clear_table</span><span·class="p"·data-group-id="7155763362-62">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opaque</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·65,·SHA:·7e927633e863b0caf70b1c21b2841c8647fe42e61cfb7c37b9d6b0955d45c0cd·...·]2-62">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 193 | ····</span><span·class="p"·data-group-id=" | 193 | ····</span><span·class="p"·data-group-id="7155763362-63">[</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">clear_table</span><span·class="p"·data-group-id="7155763362-64">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·cla[·...·truncated·by·diffoscope;·len:·608,·SHA:·9a5be9a377d2beb225659fe0860903a3c5d71deb0aa1e13b765754811d46a15d·...·]2-63">]</span><span·class="p">,</span><span·class="w"> |
| 194 | ····</span><span·class="ss">ok</span><span·class="p">.</span><span·class="w"> | 194 | ····</span><span·class="ss">ok</span><span·class="p">.</span><span·class="w"> |
| 195 | </span><span·class="nf">index_match_object</span><span·class="p"·data-group-id=" | 195 | </span><span·class="nf">index_match_object</span><span·class="p"·data-group-id="7155763362-66">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opaque</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·219,·SHA:·b8a496f3394db68ec0f53fb04a2ee5533b94e88afd53393cec6afba74a7cd8d5·...·]2-66">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 196 | ····</span><span·class="n">Match</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 196 | ····</span><span·class="n">Match</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 197 | ········</span><span·class="p"·data-group-id=" | 197 | ········</span><span·class="p"·data-group-id="7155763362-67">[</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">index_match_object</span><span·class="p"·data-group-id="7155763362-68">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><s[·...·truncated·by·diffoscope;·len:·370,·SHA:·d12a3da3c655871d367887fe240f3d3b985fbe80d8b9e3ee074704c92062bf47·...·]2-68">)</span><span·class="w"> |
| 198 | ·········</span><span·class="p">||</span><span·class="w">·</span><span·class="n">Frag</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="nf">frag_names</span><span·class="p"·data-group-id=" | 198 | ·········</span><span·class="p">||</span><span·class="w">·</span><span·class="n">Frag</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="nf">frag_names</span><span·class="p"·data-group-id="7155763362-69">(</span><span·class="n">Tab</span><span·class="p"·data-group-id="7155763362-69">)</span><span·class="p"·data-group-id="7155763362-67">]</span><span·class="p">,</span><span·class="w"> |
| 199 | ····</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id=" | 199 | ····</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id="7155763362-70">(</span><span·class="n">Match</span><span·class="p"·data-group-id="7155763362-70">)</span><span·class="p">.</span><span·class="w"> |
| 200 | </span><span·class="nf">index_read</span><span·class="p"·data-group-id=" | 200 | </span><span·class="nf">index_read</span><span·class="p"·data-group-id="7155763362-71">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opaque</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·219,·SHA:·a80c0264637b04187fe1ae5c128b5d417efeb4e0273cc999f245d11c301b1615·...·]2-71">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 201 | ····</span><span·class="n">Match</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 201 | ····</span><span·class="n">Match</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 202 | ········</span><span·class="p"·data-group-id=" | 202 | ········</span><span·class="p"·data-group-id="7155763362-72">[</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">index_read</span><span·class="p"·data-group-id="7155763362-73">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·clas[·...·truncated·by·diffoscope;·len:·362,·SHA:·f3f1025d2378cff7c75db76868bbf3e16544c94056058bfa5ae146c71aabcabd·...·]2-73">)</span><span·class="w"> |
| 203 | ·········</span><span·class="p">||</span><span·class="w">·</span><span·class="n">Frag</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="nf">frag_names</span><span·class="p"·data-group-id=" | 203 | ·········</span><span·class="p">||</span><span·class="w">·</span><span·class="n">Frag</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="nf">frag_names</span><span·class="p"·data-group-id="7155763362-74">(</span><span·class="n">Tab</span><span·class="p"·data-group-id="7155763362-74">)</span><span·class="p"·data-group-id="7155763362-72">]</span><span·class="p">,</span><span·class="w"> |
| 204 | ····</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id=" | 204 | ····</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id="7155763362-75">(</span><span·class="n">Match</span><span·class="p"·data-group-id="7155763362-75">)</span><span·class="p">.</span><span·class="w"> |
| 205 | </span><span·class="nf">foldl</span><span·class="p"·data-group-id=" | 205 | </span><span·class="nf">foldl</span><span·class="p"·data-group-id="7155763362-76">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opaque</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Fun</span><span·class="p">,</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·218,·SHA:·56d6d11daba802b571bb514f052080541ab46fcfb7aa4257dbddf1ccfee22118·...·]2-76">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 206 | ····</span><span·class="n">Fun2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 206 | ····</span><span·class="n">Fun2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="7155763362-77">(</span><span·class="n">Frag</span><span·class="p">,</span><span·class="w">·</span><span·class="n">A</span><span·class="p"·data-group-id="7155763362-77">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 207 | ···················</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">foldl</span><span·class="p"·data-group-id=" | 207 | ···················</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">foldl</span><span·class="p"·data-group-id="7155763362-78">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opaque</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Fun</span><span·class="p">,</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·217,·SHA:·db84958e780b0886d2b09a0b93ee444c74178ed88c6560d44650ff8a6be8d703·...·]2-78">)</span><span·class="w"> |
| 208 | ···········</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 208 | ···········</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 209 | ····</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">foldl</span><span·class="p"·data-group-id=" | 209 | ····</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">foldl</span><span·class="p"·data-group-id="7155763362-79">(</span><span·class="n">Fun2</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Acc</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">frag_names</span><span·class="p"·data-group-id="7155763362-80">(</s[·...·truncated·by·diffoscope;·len:·124,·SHA:·d7d3d34077ff11549f8978171ed13deb12c538824d98cfa79b894e862091c31d·...·]2-79">)</span><span·class="p">.</span><span·class="w"> |
| 210 | </span><span·class="nf">foldr</span><span·class="p"·data-group-id=" | 210 | </span><span·class="nf">foldr</span><span·class="p"·data-group-id="7155763362-81">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opaque</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Fun</span><span·class="p">,</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·218,·SHA:·56d6d11daba802b571bb514f052080541ab46fcfb7aa4257dbddf1ccfee22118·...·]2-81">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 211 | ····</span><span·class="n">Fun2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 211 | ····</span><span·class="n">Fun2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="7155763362-82">(</span><span·class="n">Frag</span><span·class="p">,</span><span·class="w">·</span><span·class="n">A</span><span·class="p"·data-group-id="7155763362-82">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 212 | ···················</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">foldr</span><span·class="p"·data-group-id=" | 212 | ···················</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">foldr</span><span·class="p"·data-group-id="7155763362-83">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opaque</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Fun</span><span·class="p">,</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·217,·SHA:·db84958e780b0886d2b09a0b93ee444c74178ed88c6560d44650ff8a6be8d703·...·]2-83">)</span><span·class="w"> |
| 213 | ···········</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 213 | ···········</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 214 | ····</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">foldr</span><span·class="p"·data-group-id=" | 214 | ····</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">foldr</span><span·class="p"·data-group-id="7155763362-84">(</span><span·class="n">Fun2</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Acc</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">frag_names</span><span·class="p"·data-group-id="7155763362-85">(</s[·...·truncated·by·diffoscope;·len:·124,·SHA:·1bb03581e42f10574ed421492ba4c29fa02eabbc88b0b50384e4bbca894081a2·...·]2-84">)</span><span·class="p">.</span><span·class="w"> |
| 215 | </span><span·class="nf">table_info</span><span·class="p"·data-group-id=" | 215 | </span><span·class="nf">table_info</span><span·class="p"·data-group-id="7155763362-86">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opaque</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7155763362-87">{</span><span·class="n">Tab</[·...·truncated·by·diffoscope;·len:·248,·SHA:·5da4a2a72a856c0598d04dfb8e8a2b5255cc9e1a978f5d2619a0a164bb7b5321·...·]2-86">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 216 | ····</span><span·class="n">Frag</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">key_to_frag_name</span><span·class="p"·data-group-id=" | 216 | ····</span><span·class="n">Frag</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">key_to_frag_name</span><span·class="p"·data-group-id="7155763362-88">(</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Key</span><span·class="p"·data-group-id="7155763362-88">)</span><span·class="p">,</span><span·class="w"> |
| 217 | ····</span><span·class="nf">table_info2</span><span·class="p"·data-group-id=" | 217 | ····</span><span·class="nf">table_info2</span><span·class="p"·data-group-id="7155763362-89">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opaque</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·141,·SHA:·c91a9703fe00a4046cf505d366570de20ca89db0c64d34691a9f02e566d29ab6·...·]2-89">)</span><span·class="p">;</span><span·class="w"> |
| 218 | </span><span·class="nf">table_info</span><span·class="p"·data-group-id=" | 218 | </span><span·class="nf">table_info</span><span·class="p"·data-group-id="7155763362-90">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opaque</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·66,·SHA:·08a8a2880e6c135d6c3c87c7a17f32c6bd5174c6e7e2fc667a9f3d8523c172d0·...·]2-90">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 219 | ····</span><span·class="nf">table_info2</span><span·class="p"·data-group-id=" | 219 | ····</span><span·class="nf">table_info2</span><span·class="p"·data-group-id="7155763362-91">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opaque</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·140,·SHA:·4cd2126ebc6ed8fb8b2d781a15dc82d46a89a413373d0bed222c2749cdde337c·...·]2-91">)</span><span·class="p">.</span><span·class="w"> |
| 220 | </span><span·class="nf">table_info2</span><span·class="p"·data-group-id=" | 220 | </span><span·class="nf">table_info2</span><span·class="p"·data-group-id="7155763362-92">(</span><span·class="n">ActivityId</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Opaque</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·141,·SHA:·c91a9703fe00a4046cf505d366570de20ca89db0c64d34691a9f02e566d29ab6·...·]2-92">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 221 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="n">Item</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> | 221 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="n">Item</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 222 | ········</span><span·class="nb">size</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 222 | ········</span><span·class="nb">size</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 223 | ············</span><span·class="n">SumFun</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 223 | ············</span><span·class="n">SumFun</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="7155763362-93">(</span><span·class="p"·data-group-id="7155763362-94">{</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Size</span><span·class="p"·data-group-id="7155763362-94">}</span><span·class="p">,</span><s[·...·truncated·by·diffoscope;·len:·88,·SHA:·0a8361b4e63aa95b7a2b01be75138c41598ee89dca4135b8d88c0e972fe772b8·...·]2-93">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Acc</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="n">Size</span><span·class="w">·</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 224 | ············</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">foldl</span><span·class="p"·data-group-id=" | 224 | ············</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">foldl</span><span·class="p"·data-group-id="7155763362-95">(</span><span·class="n">SumFun</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">frag_size</span><span·class="p"·data-group-id="7155763362-96">(</s[·...·truncated·by·diffoscope;·len:·282,·SHA:·0ae6e824708442b74247ac623530fdc7e4115c172e65f03ce1c0058e56fb36ae·...·]2-95">)</span><span·class="p">;</span><span·class="w"> |
| 225 | ········</span><span·class="nb">memory</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 225 | ········</span><span·class="nb">memory</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 226 | ············</span><span·class="n">SumFun</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 226 | ············</span><span·class="n">SumFun</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="7155763362-97">(</span><span·class="p"·data-group-id="7155763362-98">{</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Size</span><span·class="p"·data-group-id="7155763362-98">}</span><span·class="p">,</span><s[·...·truncated·by·diffoscope;·len:·88,·SHA:·0a8361b4e63aa95b7a2b01be75138c41598ee89dca4135b8d88c0e972fe772b8·...·]2-97">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Acc</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="n">Size</span><span·class="w">·</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 227 | ············</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">foldl</span><span·class="p"·data-group-id=" | 227 | ············</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">foldl</span><span·class="p"·data-group-id="7155763362-99">(</span><span·class="n">SumFun</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">frag_memory</span><span·class="p"·data-group-id="7155763362-100">([·...·truncated·by·diffoscope;·len:·286,·SHA:·6d6729cb76026b99071c264b451f790662d0b8d2872de1b9d5c6acceef72073a·...·]2-99">)</span><span·class="p">;</span><span·class="w"> |
| 228 | ········</span><span·class="ss">base_table</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 228 | ········</span><span·class="ss">base_table</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 229 | ············</span><span·class="nf">lookup_prop</span><span·class="p"·data-group-id=" | 229 | ············</span><span·class="nf">lookup_prop</span><span·class="p"·data-group-id="7155763362-101">(</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">base_table</span><span·class="p"·data-group-id="7155763362-101">)</span><span·class="p">;</span><span·class="w"> |
| 230 | ········</span><span·class="ss">node_pool</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 230 | ········</span><span·class="ss">node_pool</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 231 | ············</span><span·class="nf">lookup_prop</span><span·class="p"·data-group-id=" | 231 | ············</span><span·class="nf">lookup_prop</span><span·class="p"·data-group-id="7155763362-102">(</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">node_pool</span><span·class="p"·data-group-id="7155763362-102">)</span><span·class="p">;</span><span·class="w"> |
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| Offset 127, 148 lines modified | Offset 127, 148 lines modified | ||
| 127 | <h2·id="mnesia_frag_hash-callback-behavior"·class="section-heading"> | 127 | <h2·id="mnesia_frag_hash-callback-behavior"·class="section-heading"> |
| 128 | ··<a·href="#mnesia_frag_hash-callback-behavior"·class="hover-link"> | 128 | ··<a·href="#mnesia_frag_hash-callback-behavior"·class="hover-link"> |
| 129 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 129 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 130 | ··</a> | 130 | ··</a> |
| 131 | ··<span·class="text">mnesia_frag_hash·Callback·Behavior</span> | 131 | ··<span·class="text">mnesia_frag_hash·Callback·Behavior</span> |
| 132 | </h2> | 132 | </h2> |
| 133 | <pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 133 | <pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="2227939575-1">(</span><span·class="ss">mnesia_frag_hash</span><span·class="p"·data-group-id="2227939575-1">)</span><span·class="p">.</span><span·class="w"> |
| 134 | </span><span·class="p">-</span><span·class="na">compile</span><span·class="p"·data-group-id=" | 134 | </span><span·class="p">-</span><span·class="na">compile</span><span·class="p"·data-group-id="2227939575-2">(</span><span·class="p"·data-group-id="2227939575-3">[</span><span·class="p"·data-group-id="2227939575-4">{</span><span·class="ss">nowarn_deprecated_function</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·461,·SHA:·ff49427de432d63df295b624575ea1b86a9c473abc100140a2421a00def5ef0b·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 135 | </span><span·class="c1">%%·Fragmented·Table·Hashing·callback·functions</span><span·class="w"> | 135 | </span><span·class="c1">%%·Fragmented·Table·Hashing·callback·functions</span><span·class="w"> |
| 136 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 136 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="2227939575-7">(</span><span·class="p"·data-group-id="2227939575-8">[</span><span·class="w"> |
| 137 | ·········</span><span·class="ss">init_state</span><span·class="p">/</span><span·class="mi">2</span><span·class="p">,</span><span·class="w"> | 137 | ·········</span><span·class="ss">init_state</span><span·class="p">/</span><span·class="mi">2</span><span·class="p">,</span><span·class="w"> |
| 138 | ·········</span><span·class="ss">add_frag</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> | 138 | ·········</span><span·class="ss">add_frag</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> |
| 139 | ·········</span><span·class="ss">del_frag</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> | 139 | ·········</span><span·class="ss">del_frag</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> |
| 140 | ·········</span><span·class="ss">key_to_frag_number</span><span·class="p">/</span><span·class="mi">2</span><span·class="p">,</span><span·class="w"> | 140 | ·········</span><span·class="ss">key_to_frag_number</span><span·class="p">/</span><span·class="mi">2</span><span·class="p">,</span><span·class="w"> |
| 141 | ·········</span><span·class="ss">match_spec_to_frag_numbers</span><span·class="p">/</span><span·class="mi">2</span><span·class="w"> | 141 | ·········</span><span·class="ss">match_spec_to_frag_numbers</span><span·class="p">/</span><span·class="mi">2</span><span·class="w"> |
| 142 | ········</span><span·class="p"·data-group-id=" | 142 | ········</span><span·class="p"·data-group-id="2227939575-8">]</span><span·class="p"·data-group-id="2227939575-7">)</span><span·class="p">.</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="1605909061-1">(</span><span·class="ss">hash_state</span><span·class="p">,</span><span·class="w"> |
| 143 | ····</span><span·class="p"·data-group-id=" | 143 | ····</span><span·class="p"·data-group-id="1605909061-2">{</span><span·class="ss">n_fragments</span><span·class="p">,</span><span·class="w"> |
| 144 | ·····</span><span·class="ss">next_n_to_split</span><span·class="p">,</span><span·class="w"> | 144 | ·····</span><span·class="ss">next_n_to_split</span><span·class="p">,</span><span·class="w"> |
| 145 | ·····</span><span·class="ss">n_doubles</span><span·class="p">,</span><span·class="w"> | 145 | ·····</span><span·class="ss">n_doubles</span><span·class="p">,</span><span·class="w"> |
| 146 | ·····</span><span·class="ss">function</span><span·class="p"·data-group-id=" | 146 | ·····</span><span·class="ss">function</span><span·class="p"·data-group-id="1605909061-2">}</span><span·class="p"·data-group-id="1605909061-1">)</span><span·class="p">.</span><span·class="w"> |
| 147 | </span><span·class="c1">%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</span><span·class="w"> | 147 | </span><span·class="c1">%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</span><span·class="w"> |
| 148 | </span><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">init_state</span><span·class="p"·data-group-id=" | 148 | </span><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">init_state</span><span·class="p"·data-group-id="1605909061-3">(</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="p"·data-group-id="1605909061-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">NewState</span><span·class="w">·</span><span·class="k">when</span><span·class="w"> |
| 149 | ······</span><span·class="n">Tab</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id=" | 149 | ······</span><span·class="n">Tab</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="1605909061-4">(</span><span·class="p"·data-group-id="1605909061-4">)</span><span·class="p">,</span><span·class="w"> |
| 150 | ······</span><span·class="n">State</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id=" | 150 | ······</span><span·class="n">State</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id="1605909061-5">(</span><span·class="p"·data-group-id="1605909061-5">)</span><span·class="p">,</span><span·class="w"> |
| 151 | ······</span><span·class="n">NewState</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id=" | 151 | ······</span><span·class="n">NewState</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id="1605909061-6">(</span><span·class="p"·data-group-id="1605909061-6">)</span><span·class="p">.</span><span·class="w"> |
| 152 | </span><span·class="nf">init_state</span><span·class="p"·data-group-id=" | 152 | </span><span·class="nf">init_state</span><span·class="p"·data-group-id="1605909061-7">(</span><span·class="p">_</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="p"·data-group-id="1605909061-7">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="n">State</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="ss">undefined</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 153 | ····</span><span·class="o">#</span><span·class="ss">hash_state</span><span·class="p"·data-group-id=" | 153 | ····</span><span·class="o">#</span><span·class="ss">hash_state</span><span·class="p"·data-group-id="1605909061-8">{</span><span·class="ss">n_fragments</span><span·class="w">·····</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> |
| 154 | ················</span><span·class="ss">next_n_to_split</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> | 154 | ················</span><span·class="ss">next_n_to_split</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> |
| 155 | ················</span><span·class="ss">n_doubles</span><span·class="w">·······</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">,</span><span·class="w"> | 155 | ················</span><span·class="ss">n_doubles</span><span·class="w">·······</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">,</span><span·class="w"> |
| 156 | ················</span><span·class="ss">function</span><span·class="w">········</span><span·class="o">=</span><span·class="w">·</span><span·class="nb">phash2</span><span·class="p"·data-group-id=" | 156 | ················</span><span·class="ss">function</span><span·class="w">········</span><span·class="o">=</span><span·class="w">·</span><span·class="nb">phash2</span><span·class="p"·data-group-id="1605909061-8">}</span><span·class="p">.</span><span·class="w"> |
| 157 | </span><span·class="nf">convert_old_state</span><span·class="p"·data-group-id=" | 157 | </span><span·class="nf">convert_old_state</span><span·class="p"·data-group-id="1605909061-9">(</span><span·class="p"·data-group-id="1605909061-10">{</span><span·class="ss">hash_state</span><span·class="p">,</span><span·class="w">·</span><span·class="n">N</span><span·class="p">,</span><span·class="w">·</span><span·class="n">P</span><s[·...·truncated·by·diffoscope;·len:·164,·SHA:·2ef3ee099e125434e01fe7a96a96d3242a15d02f3929413fa489c47d3e5567fc·...·]1-9">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 158 | ····</span><span·class="o">#</span><span·class="ss">hash_state</span><span·class="p"·data-group-id=" | 158 | ····</span><span·class="o">#</span><span·class="ss">hash_state</span><span·class="p"·data-group-id="1605909061-11">{</span><span·class="ss">n_fragments</span><span·class="w">·····</span><span·class="o">=</span><span·class="w">·</span><span·class="n">N</span><span·class="p">,</span><span·class="w"> |
| 159 | ················</span><span·class="ss">next_n_to_split</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">P</span><span·class="p">,</span><span·class="w"> | 159 | ················</span><span·class="ss">next_n_to_split</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">P</span><span·class="p">,</span><span·class="w"> |
| 160 | ················</span><span·class="ss">n_doubles</span><span·class="w">·······</span><span·class="o">=</span><span·class="w">·</span><span·class="n">L</span><span·class="p">,</span><span·class="w"> | 160 | ················</span><span·class="ss">n_doubles</span><span·class="w">·······</span><span·class="o">=</span><span·class="w">·</span><span·class="n">L</span><span·class="p">,</span><span·class="w"> |
| 161 | ················</span><span·class="ss">function</span><span·class="w">········</span><span·class="o">=</span><span·class="w">·</span><span·class="nb">phash</span><span·class="p"·data-group-id=" | 161 | ················</span><span·class="ss">function</span><span·class="w">········</span><span·class="o">=</span><span·class="w">·</span><span·class="nb">phash</span><span·class="p"·data-group-id="1605909061-11">}</span><span·class="p">.</span><span·class="w"> |
| 162 | </span><span·class="c1">%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</span><span·class="w"> | 162 | </span><span·class="c1">%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</span><span·class="w"> |
| 163 | </span><span·class="w"> | 163 | </span><span·class="w"> |
| 164 | </span><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">add_frag</span><span·class="p"·data-group-id=" | 164 | </span><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">add_frag</span><span·class="p"·data-group-id="1605909061-12">(</span><span·class="n">State</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id="1605909061-13">(</span><span·class="p"·data-group-[·...·truncated·by·diffoscope;·len:·452,·SHA:·89dca0998794c82da3f085748344cdb25ff23b0228e03a5bfc9a9a81bde4c0f7·...·]1-14">}</span><span·class="w">·</span><span·class="k">when</span><span·class="w"> |
| 165 | ······</span><span·class="n">NewState</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id=" | 165 | ······</span><span·class="n">NewState</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id="1605909061-15">(</span><span·class="p"·data-group-id="1605909061-15">)</span><span·class="p">,</span><span·class="w"> |
| 166 | ······</span><span·class="n">IterFrags</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 166 | ······</span><span·class="n">IterFrags</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="1605909061-16">[</span><span·class="nf">integer</span><span·class="p"·data-group-id="1605909061-17">(</span><span·class="p"·data-group-id="1605909061-17">)</span><span·class="p"·data-group-id="1605909061-16">]</span><span·class="p">,</span><span·class="w"> |
| 167 | ······</span><span·class="n">AdditionalLockFrags</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 167 | ······</span><span·class="n">AdditionalLockFrags</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="1605909061-18">[</span><span·class="nf">integer</span><span·class="p"·data-group-id="1605909061-19">(</span><span·class="p"·data-group-id="1605909061-19">)</span><span·class="p"·data-group-id="1605909061-18">]</span><span·class="p">.</span><span·class="w"> |
| 168 | </span><span·class="nf">add_frag</span><span·class="p"·data-group-id=" | 168 | </span><span·class="nf">add_frag</span><span·class="p"·data-group-id="1605909061-20">(</span><span·class="o">#</span><span·class="ss">hash_state</span><span·class="p"·data-group-id="1605909061-21">{</span><span·class="ss">next_n_to_split</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·clas[·...·truncated·by·diffoscope;·len:·569,·SHA:·72381a58ba528177aedf5351cb204aa3a9e4e718b498d5a372570097673933d8·...·]1-20">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 169 | ····</span><span·class="n">P</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">SplitN</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> | 169 | ····</span><span·class="n">P</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">SplitN</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> |
| 170 | ····</span><span·class="n">NewN</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">N</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> | 170 | ····</span><span·class="n">NewN</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">N</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> |
| 171 | ····</span><span·class="n">State2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">power2</span><span·class="p"·data-group-id=" | 171 | ····</span><span·class="n">State2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">power2</span><span·class="p"·data-group-id="1605909061-22">(</span><span·class="n">L</span><span·class="p"·data-group-id="1605909061-22">)</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="mi">1</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 172 | ········</span><span·class="n">P2</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="n">P2</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="n">P</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 172 | ········</span><span·class="n">P2</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="n">P2</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="n">P</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 173 | ············</span><span·class="n">State</span><span·class="o">#</span><span·class="ss">hash_state</span><span·class="p"·data-group-id=" | 173 | ············</span><span·class="n">State</span><span·class="o">#</span><span·class="ss">hash_state</span><span·class="p"·data-group-id="1605909061-23">{</span><span·class="ss">n_fragments</span><span·class="w">······</span><span·class="o">=</span><span·class="w">·</span><span·class="n">NewN</span><span·class="p">,</span><span·class="w"> |
| 174 | ·····························</span><span·class="ss">n_doubles</span><span·class="w">········</span><span·class="o">=</span><span·class="w">·</span><span·class="n">L</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> | 174 | ·····························</span><span·class="ss">n_doubles</span><span·class="w">········</span><span·class="o">=</span><span·class="w">·</span><span·class="n">L</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> |
| 175 | ·····························</span><span·class="ss">next_n_to_split</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id=" | 175 | ·····························</span><span·class="ss">next_n_to_split</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="1605909061-23">}</span><span·class="p">;</span><span·class="w"> |
| 176 | ········</span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 176 | ········</span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 177 | ············</span><span·class="n">State</span><span·class="o">#</span><span·class="ss">hash_state</span><span·class="p"·data-group-id=" | 177 | ············</span><span·class="n">State</span><span·class="o">#</span><span·class="ss">hash_state</span><span·class="p"·data-group-id="1605909061-24">{</span><span·class="ss">n_fragments</span><span·class="w">·····</span><span·class="o">=</span><span·class="w">·</span><span·class="n">NewN</span><span·class="p">,</span><span·class="w"> |
| 178 | ·····························</span><span·class="ss">next_n_to_split</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">P</span><span·class="p"·data-group-id=" | 178 | ·····························</span><span·class="ss">next_n_to_split</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">P</span><span·class="p"·data-group-id="1605909061-24">}</span><span·class="w"> |
| 179 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 179 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 180 | ····</span><span·class="p"·data-group-id=" | 180 | ····</span><span·class="p"·data-group-id="1605909061-25">{</span><span·class="n">State2</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1605909061-26">[</span><span·class="n">SplitN</span><span·class="p"·data-group-id="1605909061-26">]</span><span·class="p">,</[·...·truncated·by·diffoscope;·len:·204,·SHA:·d090ac5902258be80fb4482211cbdcb0d57665d9ca30c03191a1a77970a3b340·...·]1-25">}</span><span·class="p">;</span><span·class="w"> |
| 181 | </span><span·class="nf">add_frag</span><span·class="p"·data-group-id=" | 181 | </span><span·class="nf">add_frag</span><span·class="p"·data-group-id="1605909061-28">(</span><span·class="n">OldState</span><span·class="p"·data-group-id="1605909061-28">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 182 | ····</span><span·class="n">State</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">convert_old_state</span><span·class="p"·data-group-id=" | 182 | ····</span><span·class="n">State</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">convert_old_state</span><span·class="p"·data-group-id="1605909061-29">(</span><span·class="n">OldState</span><span·class="p"·data-group-id="1605909061-29">)</span><span·class="p">,</span><span·class="w"> |
| 183 | ····</span><span·class="nf">add_frag</span><span·class="p"·data-group-id=" | 183 | ····</span><span·class="nf">add_frag</span><span·class="p"·data-group-id="1605909061-30">(</span><span·class="n">State</span><span·class="p"·data-group-id="1605909061-30">)</span><span·class="p">.</span><span·class="w"> |
| 184 | </span><span·class="c1">%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</span><span·class="w"> | 184 | </span><span·class="c1">%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</span><span·class="w"> |
| 185 | </span><span·class="w"> | 185 | </span><span·class="w"> |
| 186 | </span><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">del_frag</span><span·class="p"·data-group-id=" | 186 | </span><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">del_frag</span><span·class="p"·data-group-id="1605909061-31">(</span><span·class="n">State</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id="1605909061-32">(</span><span·class="p"·data-group-[·...·truncated·by·diffoscope;·len:·452,·SHA:·a57cbe793c82526589cb6ba2718dc3ffac14f42f5b0fcb4a6738d0f90158e4d3·...·]1-33">}</span><span·class="w">·</span><span·class="k">when</span><span·class="w"> |
| 187 | ······</span><span·class="n">NewState</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id=" | 187 | ······</span><span·class="n">NewState</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id="1605909061-34">(</span><span·class="p"·data-group-id="1605909061-34">)</span><span·class="p">,</span><span·class="w"> |
| 188 | ······</span><span·class="n">IterFrags</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 188 | ······</span><span·class="n">IterFrags</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="1605909061-35">[</span><span·class="nf">integer</span><span·class="p"·data-group-id="1605909061-36">(</span><span·class="p"·data-group-id="1605909061-36">)</span><span·class="p"·data-group-id="1605909061-35">]</span><span·class="p">,</span><span·class="w"> |
| 189 | ······</span><span·class="n">AdditionalLockFrags</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 189 | ······</span><span·class="n">AdditionalLockFrags</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="1605909061-37">[</span><span·class="nf">integer</span><span·class="p"·data-group-id="1605909061-38">(</span><span·class="p"·data-group-id="1605909061-38">)</span><span·class="p"·data-group-id="1605909061-37">]</span><span·class="p">.</span><span·class="w"> |
| 190 | </span><span·class="nf">del_frag</span><span·class="p"·data-group-id=" | 190 | </span><span·class="nf">del_frag</span><span·class="p"·data-group-id="1605909061-39">(</span><span·class="o">#</span><span·class="ss">hash_state</span><span·class="p"·data-group-id="1605909061-40">{</span><span·class="ss">next_n_to_split</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·clas[·...·truncated·by·diffoscope;·len:·569,·SHA:·dd56d47a953608ac68f35fafd5ec375d9710ac832dd79426dc8fc379ee8e4453·...·]1-39">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 191 | ····</span><span·class="n">P</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">SplitN</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> | 191 | ····</span><span·class="n">P</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">SplitN</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> |
| 192 | ····</span><span·class="k">if</span><span·class="w"> | 192 | ····</span><span·class="k">if</span><span·class="w"> |
| 193 | ········</span><span·class="n">P</span><span·class="w">·</span><span·class="o"><</span><span·class="w">·</span><span·class="mi">1</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 193 | ········</span><span·class="n">P</span><span·class="w">·</span><span·class="o"><</span><span·class="w">·</span><span·class="mi">1</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 194 | ············</span><span·class="n">L2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">L</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> | 194 | ············</span><span·class="n">L2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">L</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> |
| 195 | ············</span><span·class="n">MergeN</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">power2</span><span·class="p"·data-group-id=" | 195 | ············</span><span·class="n">MergeN</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">power2</span><span·class="p"·data-group-id="1605909061-41">(</span><span·class="n">L2</span><span·class="p"·data-group-id="1605909061-41">)</span><span·class="p">,</span><span·class="w"> |
| 196 | ············</span><span·class="n">State2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">State</span><span·class="o">#</span><span·class="ss">hash_state</span><span·class="p"·data-group-id=" | 196 | ············</span><span·class="n">State2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">State</span><span·class="o">#</span><span·class="ss">hash_state</span><span·class="p"·data-group-id="1605909061-42">{</span><span·class="ss">n_fragments</span><span·class="w">·····</span><span·class="o">=</span><span·class="w">·</span><span·class="n">N</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> |
| 197 | ······································</span><span·class="ss">next_n_to_split</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">MergeN</span><span·class="p">,</span><span·class="w"> | 197 | ······································</span><span·class="ss">next_n_to_split</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">MergeN</span><span·class="p">,</span><span·class="w"> |
| 198 | ······································</span><span·class="ss">n_doubles</span><span·class="w">·······</span><span·class="o">=</span><span·class="w">·</span><span·class="n">L2</span><span·class="p"·data-group-id=" | 198 | ······································</span><span·class="ss">n_doubles</span><span·class="w">·······</span><span·class="o">=</span><span·class="w">·</span><span·class="n">L2</span><span·class="p"·data-group-id="1605909061-42">}</span><span·class="p">,</span><span·class="w"> |
| 199 | ············</span><span·class="p"·data-group-id=" | 199 | ············</span><span·class="p"·data-group-id="1605909061-43">{</span><span·class="n">State2</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1605909061-44">[</span><span·class="n">N</span><span·class="p"·data-group-id="1605909061-44">]</span><span·class="p">,</span>[·...·truncated·by·diffoscope;·len:·201,·SHA:·f45b20a662963b076a2b7af7e5b3ef3334b2ab76dde07663451334ede4bfe776·...·]1-43">}</span><span·class="p">;</span><span·class="w"> |
| 200 | ········</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 200 | ········</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 201 | ············</span><span·class="n">MergeN</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">P</span><span·class="p">,</span><span·class="w"> | 201 | ············</span><span·class="n">MergeN</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">P</span><span·class="p">,</span><span·class="w"> |
| 202 | ············</span><span·class="n">State2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">State</span><span·class="o">#</span><span·class="ss">hash_state</span><span·class="p"·data-group-id=" | 202 | ············</span><span·class="n">State2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">State</span><span·class="o">#</span><span·class="ss">hash_state</span><span·class="p"·data-group-id="1605909061-46">{</span><span·class="ss">n_fragments</span><span·class="w">·····</span><span·class="o">=</span><span·class="w">·</span><span·class="n">N</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> |
| 203 | ······································</span><span·class="ss">next_n_to_split</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">MergeN</span><span·class="p"·data-group-id=" | 203 | ······································</span><span·class="ss">next_n_to_split</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">MergeN</span><span·class="p"·data-group-id="1605909061-46">}</span><span·class="p">,</span><span·class="w"> |
| 204 | ············</span><span·class="p"·data-group-id=" | 204 | ············</span><span·class="p"·data-group-id="1605909061-47">{</span><span·class="n">State2</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1605909061-48">[</span><span·class="n">N</span><span·class="p"·data-group-id="1605909061-48">]</span><span·class="p">,</span>[·...·truncated·by·diffoscope;·len:·201,·SHA:·c7cdc45c8a8221df9382880790b8f72cf1eb04d77a7fbcc6f8f222cc065c76e2·...·]1-47">}</span><span·class="w"> |
| 205 | ····</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> | 205 | ····</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> |
| 206 | </span><span·class="nf">del_frag</span><span·class="p"·data-group-id=" | 206 | </span><span·class="nf">del_frag</span><span·class="p"·data-group-id="1605909061-50">(</span><span·class="n">OldState</span><span·class="p"·data-group-id="1605909061-50">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 207 | ····</span><span·class="n">State</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">convert_old_state</span><span·class="p"·data-group-id=" | 207 | ····</span><span·class="n">State</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">convert_old_state</span><span·class="p"·data-group-id="1605909061-51">(</span><span·class="n">OldState</span><span·class="p"·data-group-id="1605909061-51">)</span><span·class="p">,</span><span·class="w"> |
| 208 | ····</span><span·class="nf">del_frag</span><span·class="p"·data-group-id=" | 208 | ····</span><span·class="nf">del_frag</span><span·class="p"·data-group-id="1605909061-52">(</span><span·class="n">State</span><span·class="p"·data-group-id="1605909061-52">)</span><span·class="p">.</span><span·class="w"> |
| 209 | </span><span·class="c1">%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</span><span·class="w"> | 209 | </span><span·class="c1">%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</span><span·class="w"> |
| 210 | </span><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">key_to_frag_number</span><span·class="p"·data-group-id=" | 210 | </span><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">key_to_frag_number</span><span·class="p"·data-group-id="1605909061-53">(</span><span·class="n">State</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Key</span><span·class="p"·data-group-id="1605909061-53">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Fragnum</span><span·class="w">·</span><span·class="k">when</span><span·class="w"> |
| 211 | ······</span><span·class="n">State</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id=" | 211 | ······</span><span·class="n">State</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id="1605909061-54">(</span><span·class="p"·data-group-id="1605909061-54">)</span><span·class="p">,</span><span·class="w"> |
| 212 | ······</span><span·class="n">Key</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id=" | 212 | ······</span><span·class="n">Key</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id="1605909061-55">(</span><span·class="p"·data-group-id="1605909061-55">)</span><span·class="p">,</span><span·class="w"> |
| 213 | ······</span><span·class="n">Fragnum</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id=" | 213 | ······</span><span·class="n">Fragnum</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="1605909061-56">(</span><span·class="p"·data-group-id="1605909061-56">)</span><span·class="p">.</span><span·class="w"> |
| 214 | </span><span·class="nf">key_to_frag_number</span><span·class="p"·data-group-id=" | 214 | </span><span·class="nf">key_to_frag_number</span><span·class="p"·data-group-id="1605909061-57">(</span><span·class="o">#</span><span·class="ss">hash_state</span><span·class="p"·data-group-id="1605909061-58">{</span><span·class="ss">function</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nb">[·...·truncated·by·diffoscope;·len:·536,·SHA:·c431215e100d828e26a590b6164d9dcf931e5317a417ccbf4445ea6e3aa464d5·...·]1-57">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 215 | ····</span><span·class="n">A</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">phash</span><span·class="p"·data-group-id=" | 215 | ····</span><span·class="n">A</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">phash</span><span·class="p"·data-group-id="1605909061-59">(</span><span·class="n">Key</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">power2</span><span·class="p"·data-group-id="1605909061-60">(</span><span·class="n">L</span><span·class="w">·</span><span·class="o">+</span><sp[·...·truncated·by·diffoscope;·len:·140,·SHA:·6161f2c0aa3331270b819a52e7010e289a2974e0a703e23fb5d4948c431d97d2·...·]1-59">)</span><span·class="p">,</span><span·class="w"> |
| 216 | ····</span><span·class="k">if</span><span·class="w"> | 216 | ····</span><span·class="k">if</span><span·class="w"> |
| 217 | ········</span><span·class="n">A</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="n">N</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 217 | ········</span><span·class="n">A</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="n">N</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 218 | ············</span><span·class="n">A</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="nf">power2</span><span·class="p"·data-group-id=" | 218 | ············</span><span·class="n">A</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="nf">power2</span><span·class="p"·data-group-id="1605909061-61">(</span><span·class="n">L</span><span·class="p"·data-group-id="1605909061-61">)</span><span·class="p">;</span><span·class="w"> |
| 219 | ········</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 219 | ········</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 220 | ············</span><span·class="n">A</span><span·class="w"> | 220 | ············</span><span·class="n">A</span><span·class="w"> |
| 221 | ····</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> | 221 | ····</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> |
| 222 | </span><span·class="nf">key_to_frag_number</span><span·class="p"·data-group-id=" | 222 | </span><span·class="nf">key_to_frag_number</span><span·class="p"·data-group-id="1605909061-62">(</span><span·class="o">#</span><span·class="ss">hash_state</span><span·class="p"·data-group-id="1605909061-63">{</span><span·class="ss">function</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nb">[·...·truncated·by·diffoscope;·len:·537,·SHA:·aca495253b9b5a2ca4863cf8ff9fa5d0eb4bb78f3005c666512279ffbefeff3f·...·]1-62">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 223 | ····</span><span·class="n">A</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">phash2</span><span·class="p"·data-group-id=" | 223 | ····</span><span·class="n">A</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">phash2</span><span·class="p"·data-group-id="1605909061-64">(</span><span·class="n">Key</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">power2</span><span·class="p"·data-group-id="1605909061-65">(</span><span·class="n">L</span><span·class="w">·</span><span·class="o">+</span><sp[·...·truncated·by·diffoscope;·len:·140,·SHA:·95896f13f152939a5f678a53ca8a7d654ac2bd16348073063d61d38e7056b724·...·]1-64">)</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> |
| 224 | ····</span><span·class="k">if</span><span·class="w"> | 224 | ····</span><span·class="k">if</span><span·class="w"> |
| 225 | ········</span><span·class="n">A</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="n">N</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 225 | ········</span><span·class="n">A</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="n">N</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 226 | ············</span><span·class="n">A</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="nf">power2</span><span·class="p"·data-group-id=" | 226 | ············</span><span·class="n">A</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="nf">power2</span><span·class="p"·data-group-id="1605909061-66">(</span><span·class="n">L</span><span·class="p"·data-group-id="1605909061-66">)</span><span·class="p">;</span><span·class="w"> |
| 227 | ········</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 227 | ········</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 228 | ············</span><span·class="n">A</span><span·class="w"> | 228 | ············</span><span·class="n">A</span><span·class="w"> |
| 229 | ····</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> | 229 | ····</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> |
| 230 | </span><span·class="nf">key_to_frag_number</span><span·class="p"·data-group-id=" | 230 | </span><span·class="nf">key_to_frag_number</span><span·class="p"·data-group-id="1605909061-67">(</span><span·class="n">OldState</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Key</span><span·class="p"·data-group-id="1605909061-67">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 231 | ····</span><span·class="n">State</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">convert_old_state</span><span·class="p"·data-group-id=" | 231 | ····</span><span·class="n">State</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">convert_old_state</span><span·class="p"·data-group-id="1605909061-68">(</span><span·class="n">OldState</span><span·class="p"·data-group-id="1605909061-68">)</span><span·class="p">,</span><span·class="w"> |
| 232 | ····</span><span·class="nf">key_to_frag_number</span><span·class="p"·data-group-id=" | 232 | ····</span><span·class="nf">key_to_frag_number</span><span·class="p"·data-group-id="1605909061-69">(</span><span·class="n">State</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Key</span><span·class="p"·data-group-id="1605909061-69">)</span><span·class="p">.</span><span·class="w"> |
| 233 | </span><span·class="c1">%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</span><span·class="w"> | 233 | </span><span·class="c1">%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</span><span·class="w"> |
| 234 | </span><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">match_spec_to_frag_numbers</span><span·class="p"·data-group-id=" | 234 | </span><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">match_spec_to_frag_numbers</span><span·class="p"·data-group-id="1605909061-70">(</span><span·class="n">State</span><span·class="p">,</span><span·class="w">·</span><span·class="n">MatchSpec</span><span·class="p"·data-group-id="1605909061-70">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Fragnums</span><span·class="w">·</span><span·class="k">when</span><span·class="w"> |
| 235 | ······</span><span·class="n">State</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id=" | 235 | ······</span><span·class="n">State</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id="1605909061-71">(</span><span·class="p"·data-group-id="1605909061-71">)</span><span·class="p">,</span><span·class="w"> |
| 236 | ······</span><span·class="n">MatchSpec</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">match_spec</span><span·class="p"·data-group-id=" | 236 | ······</span><span·class="n">MatchSpec</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">match_spec</span><span·class="p"·data-group-id="1605909061-72">(</span><span·class="p"·data-group-id="1605909061-72">)</span><span·class="p">,</span><span·class="w"> |
| 237 | ······</span><span·class="n">Fragnums</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 237 | ······</span><span·class="n">Fragnums</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="1605909061-73">[</span><span·class="nf">integer</span><span·class="p"·data-group-id="1605909061-74">(</span><span·class="p"·data-group-id="1605909061-74">)</span><span·class="p"·data-group-id="1605909061-73">]</span><span·class="p">.</span><span·class="w"> |
| 238 | </span><span·class="nf">match_spec_to_frag_numbers</span><span·class="p"·data-group-id=" | 238 | </span><span·class="nf">match_spec_to_frag_numbers</span><span·class="p"·data-group-id="1605909061-75">(</span><span·class="o">#</span><span·class="ss">hash_state</span><span·class="p"·data-group-id="1605909061-76">{</span><span·class="ss">n_fragments</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n[·...·truncated·by·diffoscope;·len:·284,·SHA:·e872ed28de563a2435d4f2ea6ad1a81941d4b90cbed1fd8501a720ecde7ce778·...·]1-75">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 239 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="n">MatchSpec</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> | 239 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="n">MatchSpec</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 240 | ········</span><span·class="p"·data-group-id=" | 240 | ········</span><span·class="p"·data-group-id="1605909061-77">[</span><span·class="p"·data-group-id="1605909061-78">{</span><span·class="n">HeadPat</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span[·...·truncated·by·diffoscope;·len:·554,·SHA:·9ebc237de577f00383e027656912eec7231d7478bf4bdb994cf05a82079a4da1·...·]1-80">)</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="mi">2</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 241 | ············</span><span·class="n">KeyPat</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">element</span><span·class="p"·data-group-id=" | 241 | ············</span><span·class="n">KeyPat</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">element</span><span·class="p"·data-group-id="1605909061-81">(</span><span·class="mi">2</span><span·class="p">,</span><span·class="w">·</span><span·class="n">HeadPat</span><span·class="p"·data-group-id="1605909061-81">)</span><span·class="p">,</span><span·class="w"> |
| 242 | ············</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">has_var</span><span·class="p"·data-group-id=" | 242 | ············</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">has_var</span><span·class="p"·data-group-id="1605909061-82">(</span><span·class="n">KeyPat</span><span·class="p"·data-group-id="1605909061-82">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 243 | ················</span><span·class="ss">false</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 243 | ················</span><span·class="ss">false</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 244 | ····················</span><span·class="p"·data-group-id=" | 244 | ····················</span><span·class="p"·data-group-id="1605909061-83">[</span><span·class="nf">key_to_frag_number</span><span·class="p"·data-group-id="1605909061-84">(</span><span·class="n">State</span><span·class="p">,</span><span·class="w">·</span><span·class="n">KeyPat</span><span·class="p"·data-group-id="1[·...·truncated·by·diffoscope;·len:·62,·SHA:·dafb8d9b21c768b6460d211410da62e036c6b51de2aca694c3c2ff8676f7c65d·...·]1-83">]</span><span·class="p">;</span><span·class="w"> |
| 245 | ················</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 245 | ················</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
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| 133 | ··<a·href="#starting-mnesia-for-the-first-time"·class="hover-link"> | 133 | ··<a·href="#starting-mnesia-for-the-first-time"·class="hover-link"> |
| 134 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 134 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 135 | ··</a> | 135 | ··</a> |
| 136 | ··<span·class="text">Starting·Mnesia·for·the·First·Time</span> | 136 | ··<span·class="text">Starting·Mnesia·for·the·First·Time</span> |
| 137 | </h2> | 137 | </h2> |
| 138 | <p>This·section·provides·a·simplified·demonstration·of·a·<code·class="inline">Mnesia</code>·system·startup. | 138 | <p>This·section·provides·a·simplified·demonstration·of·a·<code·class="inline">Mnesia</code>·system·startup. |
| 139 | The·dialogue·from·the·Erlang·shell·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl·-mnesia·dir·'"/tmp/funky"'</span><span·class="w"> | 139 | The·dialogue·from·the·Erlang·shell·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl·-mnesia·dir·'"/tmp/funky"'</span><span·class="w"> |
| 140 | </span><span·class="n">Erlang</span><span·class="o">/</span><span·class="n">OTP</span><span·class="w">·</span><span·class="mi">27</span><span·class="w">·</span><span·class="p"·data-group-id=" | 140 | </span><span·class="n">Erlang</span><span·class="o">/</span><span·class="n">OTP</span><span·class="w">·</span><span·class="mi">27</span><span·class="w">·</span><span·class="p"·data-group-id="7200994928-1">[</span><span·class="ss">erts</span><span·class="o">-</span><span·class="mf">15.1</span><span·class="p">.</span><span·class="mi">2</span><span·class="p"·data-group-id="7200994928-1">]</span><span·class="w"> |
| 141 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V15</span><span·class="p">.</span><span·class="mf">1.2</span><span·class="w">·</span><span·class="p"·data-group-id=" | 141 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V15</span><span·class="p">.</span><span·class="mf">1.2</span><span·class="w">·</span><span·class="p"·data-group-id="7200994928-2">(</span><span·class="ss">press</span><span·class="w">·</span><span·class="n">Ctrl</span><span·class="o">+</span><span·class="n">G</span><span·class="w">·</span><span·class="ss">to</span><span·class="w">·</span><span·class="ss">abort</span><sp[·...·truncated·by·diffoscope;·len:·399,·SHA:·35e0fb8f527cf962444f8304c3767809ea071f87cac1dfe8424287785e874baf·...·]-2">)</span><span·class="gp·unselectable"> |
| 142 | 1>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_schema</span><span·class="p"·data-group-id=" | 142 | 1>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_schema</span><span·class="p"·data-group-id="7200994928-4">(</span><span·class="p"·data-group-id="7200994928-5">[</span><span·class="nf">node</span><span·class="p"·data-group-id="7200994928-6">(</span><span·class="p"·data-group-id="7200994928-6">)</span><span·class="p"·data-group-id="7200994928-5">]<[·...·truncated·by·diffoscope;·len:·47,·SHA:·0f076211d2136b3b13e10e883b0ed78225367d10c51599f920a3db5c64558c2f·...·]-4">)</span><span·class="p">.</span><span·class="w"> |
| 143 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 143 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 144 | 2>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 144 | 2>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="7200994928-7">(</span><span·class="p"·data-group-id="7200994928-7">)</span><span·class="p">.</span><span·class="w"> |
| 145 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 145 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 146 | 3>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id=" | 146 | 3>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id="7200994928-8">(</span><span·class="ss">funky</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7200994928-9">[</span><span·class="p"·data-group-id="7200994928-9">]</span><span·class="p"·data-group-id="7200994928-8">)</span><span·class="p">.</span><span·class="w"> |
| 147 | </span><span·class="p"·data-group-id=" | 147 | </span><span·class="p"·data-group-id="7200994928-10">{</span><span·class="ss">atomic</span><span·class="p">,</span><span·class="ss">ok</span><span·class="p"·data-group-id="7200994928-10">}</span><span·class="gp·unselectable"> |
| 148 | 4>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">info</span><span·class="p"·data-group-id=" | 148 | 4>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">info</span><span·class="p"·data-group-id="7200994928-11">(</span><span·class="p"·data-group-id="7200994928-11">)</span><span·class="p">.</span><span·class="w"> |
| 149 | </span><span·class="o">--</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Processes</span><span·class="w">·</span><span·class="ss">holding</span><span·class="w">·</span><span·class="ss">locks</span><span·class="w">·</span><span·class="o"><-</span><span·class="o">--</span><span·class="w">· | 149 | </span><span·class="o">--</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Processes</span><span·class="w">·</span><span·class="ss">holding</span><span·class="w">·</span><span·class="ss">locks</span><span·class="w">·</span><span·class="o"><-</span><span·class="o">--</span><span·class="w">· |
| 150 | </span><span·class="o">--</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Processes</span><span·class="w">·</span><span·class="ss">waiting</span><span·class="w">·</span><span·class="ss">for</span><span·class="w">·</span><span·class="ss">locks</span><span·class="w">·</span><span·class="o"><-</span><span·class="o">--</span><span·class="w">· | 150 | </span><span·class="o">--</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Processes</span><span·class="w">·</span><span·class="ss">waiting</span><span·class="w">·</span><span·class="ss">for</span><span·class="w">·</span><span·class="ss">locks</span><span·class="w">·</span><span·class="o"><-</span><span·class="o">--</span><span·class="w">· |
| 151 | </span><span·class="o">--</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Participant</span><span·class="w">·</span><span·class="ss">transactions</span><span·class="w">·</span><span·class="o"><-</span><span·class="o">--</span><span·class="w">· | 151 | </span><span·class="o">--</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Participant</span><span·class="w">·</span><span·class="ss">transactions</span><span·class="w">·</span><span·class="o"><-</span><span·class="o">--</span><span·class="w">· |
| 152 | </span><span·class="o">--</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Coordinator</span><span·class="w">·</span><span·class="ss">transactions</span><span·class="w">·</span><span·class="o"><-</span><span·class="o">--</span><span·class="w"> | 152 | </span><span·class="o">--</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Coordinator</span><span·class="w">·</span><span·class="ss">transactions</span><span·class="w">·</span><span·class="o"><-</span><span·class="o">--</span><span·class="w"> |
| 153 | </span><span·class="o">--</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Uncertain</span><span·class="w">·</span><span·class="ss">transactions</span><span·class="w">·</span><span·class="o"><-</span><span·class="o">--</span><span·class="w">· | 153 | </span><span·class="o">--</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Uncertain</span><span·class="w">·</span><span·class="ss">transactions</span><span·class="w">·</span><span·class="o"><-</span><span·class="o">--</span><span·class="w">· |
| 154 | </span><span·class="o">--</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Active</span><span·class="w">·</span><span·class="ss">tables</span><span·class="w">·</span><span·class="o"><-</span><span·class="o">--</span><span·class="w">· | 154 | </span><span·class="o">--</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Active</span><span·class="w">·</span><span·class="ss">tables</span><span·class="w">·</span><span·class="o"><-</span><span·class="o">--</span><span·class="w">· |
| 155 | </span><span·class="ss">funky</span><span·class="w">··········</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">with</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">········</span><span·class="ss">records</span><span·class="w">·</span><span·class="ss">occupying</span><span·class="w">·</span><span·class="mi">305</span><span·class="w">······</span><span·class="ss">words</span><span·class="w">·</span><span·class="k">of</span><span·class="w">·</span><span·class="ss">mem</span><span·class="w"> | 155 | </span><span·class="ss">funky</span><span·class="w">··········</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">with</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">········</span><span·class="ss">records</span><span·class="w">·</span><span·class="ss">occupying</span><span·class="w">·</span><span·class="mi">305</span><span·class="w">······</span><span·class="ss">words</span><span·class="w">·</span><span·class="k">of</span><span·class="w">·</span><span·class="ss">mem</span><span·class="w"> |
| 156 | </span><span·class="ss">schema</span><span·class="w">·········</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">with</span><span·class="w">·</span><span·class="mi">2</span><span·class="w">········</span><span·class="ss">records</span><span·class="w">·</span><span·class="ss">occupying</span><span·class="w">·</span><span·class="mi">533</span><span·class="w">······</span><span·class="ss">words</span><span·class="w">·</span><span·class="k">of</span><span·class="w">·</span><span·class="ss">mem</span><span·class="w"> | 156 | </span><span·class="ss">schema</span><span·class="w">·········</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">with</span><span·class="w">·</span><span·class="mi">2</span><span·class="w">········</span><span·class="ss">records</span><span·class="w">·</span><span·class="ss">occupying</span><span·class="w">·</span><span·class="mi">533</span><span·class="w">······</span><span·class="ss">words</span><span·class="w">·</span><span·class="k">of</span><span·class="w">·</span><span·class="ss">mem</span><span·class="w"> |
| 157 | </span><span·class="o">==</span><span·class="p">=></span><span·class="w">·</span><span·class="n">System</span><span·class="w">·</span><span·class="ss">info</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">version</span><span·class="w">·</span><span·class="s">"4.23.2"</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">debug</span><span·class="w">·</span><span·class="ss">level</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">none</span><span·class="w">·</span><span·class="o"><=</span><span·class="o">==</span><span·class="w"> | 157 | </span><span·class="o">==</span><span·class="p">=></span><span·class="w">·</span><span·class="n">System</span><span·class="w">·</span><span·class="ss">info</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">version</span><span·class="w">·</span><span·class="s">"4.23.2"</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">debug</span><span·class="w">·</span><span·class="ss">level</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">none</span><span·class="w">·</span><span·class="o"><=</span><span·class="o">==</span><span·class="w"> |
| 158 | </span><span·class="ss">opt_disc</span><span·class="p">.</span><span·class="w">·</span><span·class="n">Directory</span><span·class="w">·</span><span·class="s">"/tmp/funky"</span><span·class="w">·</span><span·class="ss">is</span><span·class="w">·</span><span·class="ss">used</span><span·class="p">.</span><span·class="w"> | 158 | </span><span·class="ss">opt_disc</span><span·class="p">.</span><span·class="w">·</span><span·class="n">Directory</span><span·class="w">·</span><span·class="s">"/tmp/funky"</span><span·class="w">·</span><span·class="ss">is</span><span·class="w">·</span><span·class="ss">used</span><span·class="p">.</span><span·class="w"> |
| 159 | </span><span·class="ss">use</span><span·class="w">·</span><span·class="ss">fallback</span><span·class="w">·</span><span·class="ss">at</span><span·class="w">·</span><span·class="ss">restart</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">false</span><span·class="w"> | 159 | </span><span·class="ss">use</span><span·class="w">·</span><span·class="ss">fallback</span><span·class="w">·</span><span·class="ss">at</span><span·class="w">·</span><span·class="ss">restart</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">false</span><span·class="w"> |
| 160 | </span><span·class="ss">running</span><span·class="w">·</span><span·class="ss">db</span><span·class="w">·</span><span·class="nb">nodes</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 160 | </span><span·class="ss">running</span><span·class="w">·</span><span·class="ss">db</span><span·class="w">·</span><span·class="nb">nodes</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7200994928-12">[</span><span·class="ss">nonode@nohost</span><span·class="p"·data-group-id="7200994928-12">]</span><span·class="w"> |
| 161 | </span><span·class="ss">stopped</span><span·class="w">·</span><span·class="ss">db</span><span·class="w">·</span><span·class="nb">nodes</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 161 | </span><span·class="ss">stopped</span><span·class="w">·</span><span·class="ss">db</span><span·class="w">·</span><span·class="nb">nodes</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7200994928-13">[</span><span·class="p"·data-group-id="7200994928-13">]</span><span·class="w"> |
| 162 | </span><span·class="ss">master</span><span·class="w">·</span><span·class="nb">node</span><span·class="w">·</span><span·class="ss">tables</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 162 | </span><span·class="ss">master</span><span·class="w">·</span><span·class="nb">node</span><span·class="w">·</span><span·class="ss">tables</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7200994928-14">[</span><span·class="p"·data-group-id="7200994928-14">]</span><span·class="w"> |
| 163 | </span><span·class="ss">remote</span><span·class="w">·············</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 163 | </span><span·class="ss">remote</span><span·class="w">·············</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7200994928-15">[</span><span·class="p"·data-group-id="7200994928-15">]</span><span·class="w"> |
| 164 | </span><span·class="ss">ram_copies</span><span·class="w">·········</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 164 | </span><span·class="ss">ram_copies</span><span·class="w">·········</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7200994928-16">[</span><span·class="ss">funky</span><span·class="p"·data-group-id="7200994928-16">]</span><span·class="w"> |
| 165 | </span><span·class="ss">disc_copies</span><span·class="w">········</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 165 | </span><span·class="ss">disc_copies</span><span·class="w">········</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7200994928-17">[</span><span·class="ss">schema</span><span·class="p"·data-group-id="7200994928-17">]</span><span·class="w"> |
| 166 | </span><span·class="ss">disc_only_copies</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 166 | </span><span·class="ss">disc_only_copies</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7200994928-18">[</span><span·class="p"·data-group-id="7200994928-18">]</span><span·class="w"> |
| 167 | </span><span·class="p"·data-group-id=" | 167 | </span><span·class="p"·data-group-id="7200994928-19">[</span><span·class="p"·data-group-id="7200994928-20">{</span><span·class="ss">nonode@nohost</span><span·class="p">,</span><span·class="ss">disc_copies</span><span·class="p"·data-group-id="7200994928-20">}</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·222,·SHA:·c0eccba4faad1a9fe12ea826d020b9589d5f4302229e823f0501003119537a9c·...·]-21">]</span><span·class="w"> |
| 168 | </span><span·class="p"·data-group-id=" | 168 | </span><span·class="p"·data-group-id="7200994928-22">[</span><span·class="p"·data-group-id="7200994928-23">{</span><span·class="ss">nonode@nohost</span><span·class="p">,</span><span·class="ss">ram_copies</span><span·class="p"·data-group-id="7200994928-23">}</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·220,·SHA:·ff24b3d0e14f2f0294e810dc7f249d7a097da369ceccbb48bc274def262c1b06·...·]-24">]</span><span·class="w"> |
| 169 | </span><span·class="mi">3</span><span·class="w">·</span><span·class="ss">transactions</span><span·class="w">·</span><span·class="ss">committed</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="ss">aborted</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="ss">restarted</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">2</span><span·class="w">·</span><span·class="ss">logged</span><span·class="w">·</span><span·class="ss">to</span><span·class="w">·</span><span·class="ss">disc</span><span·class="w"> | 169 | </span><span·class="mi">3</span><span·class="w">·</span><span·class="ss">transactions</span><span·class="w">·</span><span·class="ss">committed</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="ss">aborted</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="ss">restarted</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">2</span><span·class="w">·</span><span·class="ss">logged</span><span·class="w">·</span><span·class="ss">to</span><span·class="w">·</span><span·class="ss">disc</span><span·class="w"> |
| 170 | </span><span·class="mi">0</span><span·class="w">·</span><span·class="ss">held</span><span·class="w">·</span><span·class="ss">locks</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">queue</span><span·class="p">;</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="ss">local</span><span·class="w">·</span><span·class="ss">transactions</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="ss">remote</span><span·class="w"> | 170 | </span><span·class="mi">0</span><span·class="w">·</span><span·class="ss">held</span><span·class="w">·</span><span·class="ss">locks</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">queue</span><span·class="p">;</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="ss">local</span><span·class="w">·</span><span·class="ss">transactions</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="ss">remote</span><span·class="w"> |
| 171 | </span><span·class="mi">0</span><span·class="w">·</span><span·class="ss">transactions</span><span·class="w">·</span><span·class="ss">waits</span><span·class="w">·</span><span·class="ss">for</span><span·class="w">·</span><span·class="ss">other</span><span·class="w">·</span><span·class="nc">nodes</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 171 | </span><span·class="mi">0</span><span·class="w">·</span><span·class="ss">transactions</span><span·class="w">·</span><span·class="ss">waits</span><span·class="w">·</span><span·class="ss">for</span><span·class="w">·</span><span·class="ss">other</span><span·class="w">·</span><span·class="nc">nodes</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="7200994928-25">[</span><span·class="p"·data-group-id="7200994928-25">]</span><span·class="w"> |
| 172 | </span><span·class="ss">ok</span></code></pre><p>In·this·example,·the·following·actions·are·performed:</p><ul><li><em>Step·1:</em>·The·Erlang·system·is·started·from·the·UNIX·prompt·with·a·flag | 172 | </span><span·class="ss">ok</span></code></pre><p>In·this·example,·the·following·actions·are·performed:</p><ul><li><em>Step·1:</em>·The·Erlang·system·is·started·from·the·UNIX·prompt·with·a·flag |
| 173 | <code·class="inline">-mnesia·dir·'"/tmp/funky"'</code>,·which·indicates·in·which·directory·to·store·the | 173 | <code·class="inline">-mnesia·dir·'"/tmp/funky"'</code>,·which·indicates·in·which·directory·to·store·the |
| 174 | data.</li><li><em>Step·2:</em>·A·new·empty·schema·is·initialized·on·the·local·node·by·evaluating | 174 | data.</li><li><em>Step·2:</em>·A·new·empty·schema·is·initialized·on·the·local·node·by·evaluating |
| 175 | <a·href="mnesia.html#create_schema/1"><code·class="inline">mnesia:create_schema([node()])</code></a>.·The·schema | 175 | <a·href="mnesia.html#create_schema/1"><code·class="inline">mnesia:create_schema([node()])</code></a>.·The·schema |
| 176 | contains·information·about·the·database·in·general.·This·is·explained·in | 176 | contains·information·about·the·database·in·general.·This·is·explained·in |
| 177 | detail·later.</li><li><em>Step·3:</em>·The·DBMS·is·started·by·evaluating | 177 | detail·later.</li><li><em>Step·3:</em>·The·DBMS·is·started·by·evaluating |
| 178 | <a·href="mnesia.html#start/0"><code·class="inline">mnesia:start()</code></a>.</li><li><em>Step·4:</em>·A·first·table·is·created,·called·<code·class="inline">funky</code>,·by·evaluating·the | 178 | <a·href="mnesia.html#start/0"><code·class="inline">mnesia:start()</code></a>.</li><li><em>Step·4:</em>·A·first·table·is·created,·called·<code·class="inline">funky</code>,·by·evaluating·the |
| Offset 225, 36 lines modified | Offset 225, 36 lines modified | ||
| 225 | relationship.</li></ol></li></ul><h3·id="defining-structure-and-content"·class="section-heading"> | 225 | relationship.</li></ol></li></ul><h3·id="defining-structure-and-content"·class="section-heading"> |
| 226 | ··<a·href="#defining-structure-and-content"·class="hover-link"> | 226 | ··<a·href="#defining-structure-and-content"·class="hover-link"> |
| 227 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 227 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 228 | ··</a> | 228 | ··</a> |
| 229 | ··<span·class="text">Defining·Structure·and·Content</span> | 229 | ··<span·class="text">Defining·Structure·and·Content</span> |
| 230 | </h3> | 230 | </h3> |
| 231 | <p>First·the·record·definitions·are·entered·into·a·text·file·named·<code·class="inline">company.hrl</code>. | 231 | <p>First·the·record·definitions·are·entered·into·a·text·file·named·<code·class="inline">company.hrl</code>. |
| 232 | This·file·defines·the·following·structure·for·the·example·database:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 232 | This·file·defines·the·following·structure·for·the·example·database:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="4571331662-1">(</span><span·class="ss">employee</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4571331662-2">{</span><span·class="ss">emp_no</span><span·class="p">,</span><span·class="w"> |
| 233 | ···················</span><span·class="ss">name</span><span·class="p">,</span><span·class="w"> | 233 | ···················</span><span·class="ss">name</span><span·class="p">,</span><span·class="w"> |
| 234 | ···················</span><span·class="ss">salary</span><span·class="p">,</span><span·class="w"> | 234 | ···················</span><span·class="ss">salary</span><span·class="p">,</span><span·class="w"> |
| 235 | ···················</span><span·class="ss">sex</span><span·class="p">,</span><span·class="w"> | 235 | ···················</span><span·class="ss">sex</span><span·class="p">,</span><span·class="w"> |
| 236 | ···················</span><span·class="ss">phone</span><span·class="p">,</span><span·class="w"> | 236 | ···················</span><span·class="ss">phone</span><span·class="p">,</span><span·class="w"> |
| 237 | ···················</span><span·class="ss">room_no</span><span·class="p"·data-group-id=" | 237 | ···················</span><span·class="ss">room_no</span><span·class="p"·data-group-id="4571331662-2">}</span><span·class="p"·data-group-id="4571331662-1">)</span><span·class="p">.</span><span·class="w"> |
| 238 | </span><span·class="w"> | 238 | </span><span·class="w"> |
| 239 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 239 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="4571331662-3">(</span><span·class="ss">dept</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4571331662-4">{</span><span·class="ss">id</span><span·class="p">,</span><span·class="w"> |
| 240 | ···············</span><span·class="ss">name</span><span·class="p"·data-group-id=" | 240 | ···············</span><span·class="ss">name</span><span·class="p"·data-group-id="4571331662-4">}</span><span·class="p"·data-group-id="4571331662-3">)</span><span·class="p">.</span><span·class="w"> |
| 241 | </span><span·class="w"> | 241 | </span><span·class="w"> |
| 242 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 242 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="4571331662-5">(</span><span·class="ss">project</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4571331662-6">{</span><span·class="ss">name</span><span·class="p">,</span><span·class="w"> |
| 243 | ··················</span><span·class="ss">number</span><span·class="p"·data-group-id=" | 243 | ··················</span><span·class="ss">number</span><span·class="p"·data-group-id="4571331662-6">}</span><span·class="p"·data-group-id="4571331662-5">)</span><span·class="p">.</span><span·class="w"> |
| 244 | </span><span·class="w"> | 244 | </span><span·class="w"> |
| 245 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 245 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="4571331662-7">(</span><span·class="ss">manager</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4571331662-8">{</span><span·class="ss">emp</span><span·class="p">,</span><span·class="w"> |
| 246 | ··················</span><span·class="ss">dept</span><span·class="p"·data-group-id=" | 246 | ··················</span><span·class="ss">dept</span><span·class="p"·data-group-id="4571331662-8">}</span><span·class="p"·data-group-id="4571331662-7">)</span><span·class="p">.</span><span·class="w"> |
| 247 | </span><span·class="w"> | 247 | </span><span·class="w"> |
| 248 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 248 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="4571331662-9">(</span><span·class="ss">at_dep</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4571331662-10">{</span><span·class="ss">emp</span><span·class="p">,</span><span·class="w"> |
| 249 | ·················</span><span·class="ss">dept_id</span><span·class="p"·data-group-id=" | 249 | ·················</span><span·class="ss">dept_id</span><span·class="p"·data-group-id="4571331662-10">}</span><span·class="p"·data-group-id="4571331662-9">)</span><span·class="p">.</span><span·class="w"> |
| 250 | </span><span·class="w"> | 250 | </span><span·class="w"> |
| 251 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 251 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="4571331662-11">(</span><span·class="ss">in_proj</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4571331662-12">{</span><span·class="ss">emp</span><span·class="p">,</span><span·class="w"> |
| 252 | ··················</span><span·class="ss">proj_name</span><span·class="p"·data-group-id=" | 252 | ··················</span><span·class="ss">proj_name</span><span·class="p"·data-group-id="4571331662-12">}</span><span·class="p"·data-group-id="4571331662-11">)</span><span·class="p">.</span></code></pre><p>The·structure·defines·six·tables·in·the·database.·In·<code·class="inline">Mnesia</code>,·the·function |
| 253 | <a·href="mnesia.html#create_table/2"><code·class="inline">mnesia:create_table(Name,·Opts)</code></a>·creates·tables. | 253 | <a·href="mnesia.html#create_table/2"><code·class="inline">mnesia:create_table(Name,·Opts)</code></a>·creates·tables. |
| 254 | <code·class="inline">Name</code>·is·the·table·name.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>The·current·version·of·<code·class="inline">Mnesia</code>·does·not·require·that·the·name·of·the·table·is | 254 | <code·class="inline">Name</code>·is·the·table·name.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>The·current·version·of·<code·class="inline">Mnesia</code>·does·not·require·that·the·name·of·the·table·is |
| 255 | the·same·as·the·record·name,·see | 255 | the·same·as·the·record·name,·see |
| 256 | <a·href="mnesia_chap4.html#recordnames_tablenames">Record·Names·versus·Table·Names.</a>.</p></section><p>For·example,·the·table·for·employees·is·created·with·the·function | 256 | <a·href="mnesia_chap4.html#recordnames_tablenames">Record·Names·versus·Table·Names.</a>.</p></section><p>For·example,·the·table·for·employees·is·created·with·the·function |
| 257 | <code·class="inline">mnesia:create_table(employee,·[{attributes,·record_info(fields,·employee)}])</code>. | 257 | <code·class="inline">mnesia:create_table(employee,·[{attributes,·record_info(fields,·employee)}])</code>. |
| 258 | The·table·name·<code·class="inline">employee</code>·matches·the·name·for·records·specified·in·<code·class="inline">Opts</code>. | 258 | The·table·name·<code·class="inline">employee</code>·matches·the·name·for·records·specified·in·<code·class="inline">Opts</code>. |
| 259 | The·expression·<code·class="inline">record_info(fields,·RecordName)</code>·is·processed·by·the·Erlang | 259 | The·expression·<code·class="inline">record_info(fields,·RecordName)</code>·is·processed·by·the·Erlang |
| Offset 263, 52 lines modified | Offset 263, 52 lines modified | ||
| 263 | ··<a·href="#program"·class="hover-link"> | 263 | ··<a·href="#program"·class="hover-link"> |
| 264 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 264 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 265 | ··</a> | 265 | ··</a> |
| 266 | ··<span·class="text">Program</span> | 266 | ··<span·class="text">Program</span> |
| 267 | </h3> | 267 | </h3> |
| 268 | <p>The·following·shell·interaction·starts·<code·class="inline">Mnesia</code>·and·initializes·the·schema·for | 268 | <p>The·following·shell·interaction·starts·<code·class="inline">Mnesia</code>·and·initializes·the·schema·for |
| 269 | the·<code·class="inline">Company</code>·database:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl·-mnesia·dir·'"/ldisc/scratch/Mnesia.Company"'</span><span·class="w"> | 269 | the·<code·class="inline">Company</code>·database:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·erl·-mnesia·dir·'"/ldisc/scratch/Mnesia.Company"'</span><span·class="w"> |
| 270 | </span><span·class="n">Erlang</span><span·class="o">/</span><span·class="n">OTP</span><span·class="w">·</span><span·class="mi">27</span><span·class="w">·</span><span·class="p"·data-group-id=" | 270 | </span><span·class="n">Erlang</span><span·class="o">/</span><span·class="n">OTP</span><span·class="w">·</span><span·class="mi">27</span><span·class="w">·</span><span·class="p"·data-group-id="7620378219-1">[</span><span·class="ss">erts</span><span·class="o">-</span><span·class="mf">15.1</span><span·class="p">.</span><span·class="mi">2</span><span·class="p"·data-group-id="7620378219-1">]</span><span·class="w"> |
| 271 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V15</span><span·class="p">.</span><span·class="mf">1.2</span><span·class="w">·</span><span·class="p"·data-group-id=" | 271 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V15</span><span·class="p">.</span><span·class="mf">1.2</span><span·class="w">·</span><span·class="p"·data-group-id="7620378219-2">(</span><span·class="ss">press</span><span·class="w">·</span><span·class="n">Ctrl</span><span·class="o">+</span><span·class="n">G</span><span·class="w">·</span><span·class="ss">to</span><span·class="w">·</span><span·class="ss">abort</span><sp[·...·truncated·by·diffoscope;·len:·398,·SHA:·df48eb35ae2b0f970f3bf5c40614413fe75262dad64c9955d367920b0b1bbedb·...·]9-2">)</span><span·class="gp·unselectable"> |
| 272 | 1>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_schema</span><span·class="p"·data-group-id=" | 272 | 1>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_schema</span><span·class="p"·data-group-id="7620378219-4">(</span><span·class="p"·data-group-id="7620378219-5">[</span><span·class="nf">node</span><span·class="p"·data-group-id="7620378219-6">(</span><span·class="p"·data-group-id="7620378219-6">)</span><span·class="p"·data-group-id="7620378219-5">]<[·...·truncated·by·diffoscope;·len:·46,·SHA:·9fbbd4f8c79bd32d8d48c9ee20afc02ac1317754a219973e0c4073f748605731·...·]9-4">)</span><span·class="p">.</span><span·class="w"> |
| 273 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 273 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 274 | 2>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 274 | 2>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="7620378219-7">(</span><span·class="p"·data-group-id="7620378219-7">)</span><span·class="p">.</span><span·class="w"> |
| 275 | </span><span·class="ss">ok</span></code></pre><p>The·following·program·module·creates·and·populates·previously·defined·tables:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id=" | 275 | </span><span·class="ss">ok</span></code></pre><p>The·following·program·module·creates·and·populates·previously·defined·tables:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="3137014983-1">(</span><span·class="s">"stdlib/include/qlc.hrl"</span><span·class="p"·data-group-id="3137014983-1">)</span><span·class="p">.</span><span·class="w"> |
| 276 | </span><span·class="p">-</span><span·class="na">include</span><span·class="p"·data-group-id=" | 276 | </span><span·class="p">-</span><span·class="na">include</span><span·class="p"·data-group-id="3137014983-2">(</span><span·class="s">"company.hrl"</span><span·class="p"·data-group-id="3137014983-2">)</span><span·class="p">.</span><span·class="w"> |
| 277 | </span><span·class="nf">init</span><span·class="p"·data-group-id=" | 277 | </span><span·class="nf">init</span><span·class="p"·data-group-id="3137014983-3">(</span><span·class="p"·data-group-id="3137014983-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 278 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id=" | 278 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id="3137014983-4">(</span><span·class="ss">employee</span><span·class="p">,</span><span·class="w"> |
| 279 | ························</span><span·class="p"·data-group-id=" | 279 | ························</span><span·class="p"·data-group-id="3137014983-5">[</span><span·class="p"·data-group-id="3137014983-6">{</span><span·class="ss">attributes</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">record_info</span><span·class="p"·data-group-id="3137014983-7">(</span><span·class[·...·truncated·by·diffoscope;·len:·299,·SHA:·3e8cadb8cb7e7a9316ee5238deed769c2a140e881344ca3f50e5b04c00f4c055·...·]-4">)</span><span·class="p">,</span><span·class="w"> |
| 280 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id=" | 280 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id="3137014983-8">(</span><span·class="ss">dept</span><span·class="p">,</span><span·class="w"> |
| 281 | ························</span><span·class="p"·data-group-id=" | 281 | ························</span><span·class="p"·data-group-id="3137014983-9">[</span><span·class="p"·data-group-id="3137014983-10">{</span><span·class="ss">attributes</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">record_info</span><span·class="p"·data-group-id="3137014983-11">(</span><span·cla[·...·truncated·by·diffoscope;·len:·299,·SHA:·2e33c1785b3d84a85de7c0b004d31424ac26b09bf8d2c0cbded303db149a484a·...·]-8">)</span><span·class="p">,</span><span·class="w"> |
| 282 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id=" | 282 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id="3137014983-12">(</span><span·class="ss">project</span><span·class="p">,</span><span·class="w"> |
| 283 | ························</span><span·class="p"·data-group-id=" | 283 | ························</span><span·class="p"·data-group-id="3137014983-13">[</span><span·class="p"·data-group-id="3137014983-14">{</span><span·class="ss">attributes</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">record_info</span><span·class="p"·data-group-id="3137014983-15">(</span><span·cl[·...·truncated·by·diffoscope;·len:·304,·SHA:·ec75eae679702603cf57ee7917ed42af891c9729e6338d614c178fa797b0ec96·...·]-12">)</span><span·class="p">,</span><span·class="w"> |
| 284 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id=" | 284 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id="3137014983-16">(</span><span·class="ss">manager</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3137014983-17">[</span><span·class="p"·data-group-id="3137014983-18">{</span><span·class="ss">type</span><span·class="p">,<[·...·truncated·by·diffoscope;·len:·98,·SHA:·5389192538479385ccb19ed8f548cbc7a8c9117cb6ee015579fc071daa5a2e42·...·]-18">}</span><span·class="p">,</span><span·class="w"> |
| 285 | ··································</span><span·class="p"·data-group-id=" | 285 | ··································</span><span·class="p"·data-group-id="3137014983-19">{</span><span·class="ss">attributes</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">record_info</span><span·class="p"·data-group-id="3137014983-20">(</span><span·class="ss">fields</span><span·class="p">,</span><span·cl[·...·truncated·by·diffoscope;·len:·250,·SHA:·c528a3ac4d7c103541434329889ef3f9e3742544464e8c1ce5ea3eb812928de3·...·]-16">)</span><span·class="p">,</span><span·class="w"> |
| 286 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id=" | 286 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id="3137014983-21">(</span><span·class="ss">at_dep</span><span·class="p">,</span><span·class="w"> |
| 287 | ·························</span><span·class="p"·data-group-id=" | 287 | ·························</span><span·class="p"·data-group-id="3137014983-22">[</span><span·class="p"·data-group-id="3137014983-23">{</span><span·class="ss">attributes</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">record_info</span><span·class="p"·data-group-id="3137014983-24">(</span><span·cl[·...·truncated·by·diffoscope;·len:·303,·SHA:·d73c29535bcd5f126e1b4d6f6538eac5b31e46e49c2ecf7b1e9d0a7b6e65f4db·...·]-21">)</span><span·class="p">,</span><span·class="w"> |
| 288 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id=" | 288 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id="3137014983-25">(</span><span·class="ss">in_proj</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3137014983-26">[</span><span·class="p"·data-group-id="3137014983-27">{</span><span·class="ss">type</span><span·class="p">,<[·...·truncated·by·diffoscope;·len:·98,·SHA:·5389192538479385ccb19ed8f548cbc7a8c9117cb6ee015579fc071daa5a2e42·...·]-27">}</span><span·class="p">,</span><span·class="w"> |
| 289 | ··································</span><span·class="p"·data-group-id=" | 289 | ··································</span><span·class="p"·data-group-id="3137014983-28">{</span><span·class="ss">attributes</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">record_info</span><span·class="p"·data-group-id="3137014983-29">(</span><span·class="ss">fields</span><span·class="p">,</span><span·cl[·...·truncated·by·diffoscope;·len:·250,·SHA:·bd2734e085ca19519d0f7349b4d9a7f35d0c2611f7e9bf8d9060683e1348431b·...·]-25">)</span><span·class="p">.</span></code></pre><h3·id="program-explained"·class="section-heading"> |
| 290 | ··<a·href="#program-explained"·class="hover-link"> | 290 | ··<a·href="#program-explained"·class="hover-link"> |
| 291 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 291 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 292 | ··</a> | 292 | ··</a> |
| 293 | ··<span·class="text">Program·Explained</span> | 293 | ··<span·class="text">Program·Explained</span> |
| 294 | </h3> | 294 | </h3> |
| 295 | <p>The·following·commands·and·functions·are·used·to·initiate·the·<code·class="inline">Company</code> | 295 | <p>The·following·commands·and·functions·are·used·to·initiate·the·<code·class="inline">Company</code> |
| 296 | database:</p><ul><li><code·class="inline">%·erl·-mnesia·dir·'"/ldisc/scratch/Mnesia.Company"'</code>.·This·is·a·UNIX | 296 | database:</p><ul><li><code·class="inline">%·erl·-mnesia·dir·'"/ldisc/scratch/Mnesia.Company"'</code>.·This·is·a·UNIX |
| 297 | command-line·entry·that·starts·the·Erlang·system.·The·flag·<code·class="inline">-mnesia·dir·Dir</code> | 297 | command-line·entry·that·starts·the·Erlang·system.·The·flag·<code·class="inline">-mnesia·dir·Dir</code> |
| 298 | specifies·the·location·of·the·database·directory.·The·system·responds·and | 298 | specifies·the·location·of·the·database·directory.·The·system·responds·and |
| 299 | waits·for·further·input·with·the·prompt·<code·class="inline">1></code>.</li><li><a·href="mnesia.html#create_schema/1"><code·class="inline">mnesia:create_schema([node()])</code></a>.·This·function·has | 299 | waits·for·further·input·with·the·prompt·<code·class="inline">1></code>.</li><li><a·href="mnesia.html#create_schema/1"><code·class="inline">mnesia:create_schema([node()])</code></a>.·This·function·has |
| 300 | the·format·<code·class="inline">mnesia:create_schema(DiscNodeList)</code>·and·initiates·a·new·schema.·In | 300 | the·format·<code·class="inline">mnesia:create_schema(DiscNodeList)</code>·and·initiates·a·new·schema.·In |
| 301 | this·example,·a·non-distributed·system·using·only·one·node·is·created.·Schemas | 301 | this·example,·a·non-distributed·system·using·only·one·node·is·created.·Schemas |
| 302 | are·fully·explained·in·<a·href="mnesia_chap3.html#def_schema">Define·a·Schema</a>.</li><li><a·href="mnesia.html#start/0"><code·class="inline">mnesia:start()</code></a>.·This·function·starts·<code·class="inline">Mnesia</code>·and·is·fully | 302 | are·fully·explained·in·<a·href="mnesia_chap3.html#def_schema">Define·a·Schema</a>.</li><li><a·href="mnesia.html#start/0"><code·class="inline">mnesia:start()</code></a>.·This·function·starts·<code·class="inline">Mnesia</code>·and·is·fully |
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| 171 | there·as·well.·This·action·extends·the·set·of·nodes·that·comprise·this | 171 | there·as·well.·This·action·extends·the·set·of·nodes·that·comprise·this |
| 172 | particular·<code·class="inline">Mnesia</code>·system.</p></li><li><p><a·href="mnesia.html#del_table_copy/2"><code·class="inline">mnesia:del_table_copy(Tab,·Node)</code></a>·deletes·the | 172 | particular·<code·class="inline">Mnesia</code>·system.</p></li><li><p><a·href="mnesia.html#del_table_copy/2"><code·class="inline">mnesia:del_table_copy(Tab,·Node)</code></a>·deletes·the |
| 173 | replica·of·table·<code·class="inline">Tab</code>·at·node·<code·class="inline">Node</code>.·When·the·last·replica·of·a·table·is | 173 | replica·of·table·<code·class="inline">Tab</code>·at·node·<code·class="inline">Node</code>.·When·the·last·replica·of·a·table·is |
| 174 | removed,·the·table·is·deleted.</p></li><li><p><a·href="mnesia.html#transform_table/4"><code·class="inline">mnesia:transform_table(Tab,·Fun,·NewAttributeList,·NewRecordName)</code></a> | 174 | removed,·the·table·is·deleted.</p></li><li><p><a·href="mnesia.html#transform_table/4"><code·class="inline">mnesia:transform_table(Tab,·Fun,·NewAttributeList,·NewRecordName)</code></a> |
| 175 | changes·the·format·on·all·records·in·table·<code·class="inline">Tab</code>.·It·applies·argument·<code·class="inline">Fun</code>·to | 175 | changes·the·format·on·all·records·in·table·<code·class="inline">Tab</code>.·It·applies·argument·<code·class="inline">Fun</code>·to |
| 176 | all·records·in·the·table.·<code·class="inline">Fun</code>·must·be·a·function·that·takes·a·record·of·the | 176 | all·records·in·the·table.·<code·class="inline">Fun</code>·must·be·a·function·that·takes·a·record·of·the |
| 177 | old·type,·and·returns·the·record·of·the·new·type.·The·table·key·must·not·be | 177 | old·type,·and·returns·the·record·of·the·new·type.·The·table·key·must·not·be |
| 178 | changed.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="5818891491-1">(</span><span·class="ss">old</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5818891491-2">{</span><span·class="ss">key</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">val</span><span·class="p"·data-group-id="5818891491-2">}</span><span·class="p"·data-group-id="5818891491-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 179 | </ | 178 | changed.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="7769165048-1">(</span><span·class="ss">old</span><span·class="p">,</span><span·class="w[·...·truncated·by·diffoscope;·len:·261,·SHA:·1f744a4365ac41613f60ee271030e4fd45e7d8bc27fd55d46acd4e40814ff3b4·...·]">)</span><span·class="p">.</span><span·class="w"> |
| 179 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="7769165048-3">(</span><span·class="ss">new</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7769165048-4">{</span><span·class="ss">key</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">val</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">extra</span><span·class="p"·data-group-id="7769165048-4">}</span><span·class="p"·data-group-id="7769165048-3">)</span><span·class="p">.</span><span·class="w"> | ||
| 180 | </span><span·class="n">Transformer</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 180 | </span><span·class="n">Transformer</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 181 | ···</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 181 | ···</span><span·class="nf">fun</span><span·class="p"·data-group-id="7769165048-5">(</span><span·class="n">X</span><span·class="p"·data-group-id="7769165048-5">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">record</span><span·class="p"·data-group-id="7769165048-6">(</span[·...·truncated·by·diffoscope;·len:·141,·SHA:·f1b2c3be2a8253bc6dac3fb29b7f56abef96492377bb284980e5900f797ee378·...·]-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 182 | ······</span><span·class="o">#</span><span·class="ss">new</span><span·class="p"·data-group-id=" | 182 | ······</span><span·class="o">#</span><span·class="ss">new</span><span·class="p"·data-group-id="7769165048-7">{</span><span·class="ss">key</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">X</span><span·class="o">#</span><span·class="ss">old</span><span·class="p">.</span><span·class="ss">key</span><span·class="p">,</span><span·class="w"> |
| 183 | ···········</span><span·class="ss">val</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">X</span><span·class="o">#</span><span·class="ss">old</span><span·class="p">.</span><span·class="ss">val</span><span·class="p">,</span><span·class="w"> | 183 | ···········</span><span·class="ss">val</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">X</span><span·class="o">#</span><span·class="ss">old</span><span·class="p">.</span><span·class="ss">val</span><span·class="p">,</span><span·class="w"> |
| 184 | ···········</span><span·class="ss">extra</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">42</span><span·class="p"·data-group-id=" | 184 | ···········</span><span·class="ss">extra</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">42</span><span·class="p"·data-group-id="7769165048-7">}</span><span·class="w"> |
| 185 | ···</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 185 | ···</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 186 | </span><span·class="p"·data-group-id=" | 186 | </span><span·class="p"·data-group-id="7769165048-8">{</span><span·class="ss">atomic</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ok</span><span·class="p"·data-group-id="7769165048-8">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span[·...·truncated·by·diffoscope;·len:·129,·SHA:·3488d34e6501b9f9d60a2084a24a36940a95295fcf661ead69a6fc588805e8fa·...·]-9">(</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Transformer</span><span·class="p">,</span><span·class="w"> |
| 187 | ······································</span><span·class="nf">record_info</span><span·class="p"·data-group-id=" | 187 | ······································</span><span·class="nf">record_info</span><span·class="p"·data-group-id="7769165048-10">(</span><span·class="ss">fields</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">new</span><span·class="p"·data-group-id="7769165048-10">)</span><span·class="p">,</span><span·class="w"> |
| 188 | ······································</span><span·class="ss">new</span><span·class="p"·data-group-id=" | 188 | ······································</span><span·class="ss">new</span><span·class="p"·data-group-id="7769165048-9">)</span><span·class="p">,</span></code></pre><p>Argument·<code·class="inline">Fun</code>·can·also·be·the·atom·<code·class="inline">ignore</code>,·which·indicates·that·only·the |
| 189 | metadata·about·the·table·is·updated.·Use·of·<code·class="inline">ignore</code>·is·not·recommended·(as·it | 189 | metadata·about·the·table·is·updated.·Use·of·<code·class="inline">ignore</code>·is·not·recommended·(as·it |
| 190 | creates·inconsistencies·between·the·metadata·and·the·actual·data)·but·it·is | 190 | creates·inconsistencies·between·the·metadata·and·the·actual·data)·but·it·is |
| 191 | included·as·a·possibility·for·the·user·do·to·an·own·(offline)·transform.</p></li><li><p><a·href="mnesia.html#change_table_copy_type/3"><code·class="inline">mnesia:change_table_copy_type(Tab,·Node,·ToType)</code></a> | 191 | included·as·a·possibility·for·the·user·do·to·an·own·(offline)·transform.</p></li><li><p><a·href="mnesia.html#change_table_copy_type/3"><code·class="inline">mnesia:change_table_copy_type(Tab,·Node,·ToType)</code></a> |
| 192 | changes·the·storage·type·of·a·table.·For·example,·a·RAM·table·is·changed·to·a | 192 | changes·the·storage·type·of·a·table.·For·example,·a·RAM·table·is·changed·to·a |
| 193 | <code·class="inline">disc_table</code>·at·the·node·specified·as·<code·class="inline">Node</code>.</p></li></ul><h2·id="data-model"·class="section-heading"> | 193 | <code·class="inline">disc_table</code>·at·the·node·specified·as·<code·class="inline">Node</code>.</p></li></ul><h2·id="data-model"·class="section-heading"> |
| 194 | ··<a·href="#data-model"·class="hover-link"> | 194 | ··<a·href="#data-model"·class="hover-link"> |
| 195 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 195 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 234, 37 lines modified | Offset 234, 37 lines modified | ||
| 234 | <a·href="mnesia_chap2.html#getting_started">Getting·Started</a>·to·illustrate·how·to·run·a | 234 | <a·href="mnesia_chap2.html#getting_started">Getting·Started</a>·to·illustrate·how·to·run·a |
| 235 | database·on·two·separate·nodes,·called·<code·class="inline">a@gin</code>·and·<code·class="inline">b@skeppet</code>.·Each·of·these | 235 | database·on·two·separate·nodes,·called·<code·class="inline">a@gin</code>·and·<code·class="inline">b@skeppet</code>.·Each·of·these |
| 236 | nodes·must·have·a·<code·class="inline">Mnesia</code>·directory·and·an·initialized·schema·before·<code·class="inline">Mnesia</code> | 236 | nodes·must·have·a·<code·class="inline">Mnesia</code>·directory·and·an·initialized·schema·before·<code·class="inline">Mnesia</code> |
| 237 | can·be·started.·There·are·two·ways·to·specify·the·<code·class="inline">Mnesia</code>·directory·to·be·used:</p><ul><li><p>Specify·the·<code·class="inline">Mnesia</code>·directory·by·providing·an·application·parameter·either | 237 | can·be·started.·There·are·two·ways·to·specify·the·<code·class="inline">Mnesia</code>·directory·to·be·used:</p><ul><li><p>Specify·the·<code·class="inline">Mnesia</code>·directory·by·providing·an·application·parameter·either |
| 238 | when·starting·the·Erlang·shell·or·in·the·application·script.·Previously,·the | 238 | when·starting·the·Erlang·shell·or·in·the·application·script.·Previously,·the |
| 239 | following·example·was·used·to·create·the·directory·for·the·<code·class="inline">Company</code>·database:</p><pre><code·class="text">%·erl·-mnesia·dir·'"/ldisc/scratch/Mnesia.Company"'</code></pre></li><li><p>If·no·command-line·flag·is·entered,·the·<code·class="inline">Mnesia</code>·directory·becomes·the·current | 239 | following·example·was·used·to·create·the·directory·for·the·<code·class="inline">Company</code>·database:</p><pre><code·class="text">%·erl·-mnesia·dir·'"/ldisc/scratch/Mnesia.Company"'</code></pre></li><li><p>If·no·command-line·flag·is·entered,·the·<code·class="inline">Mnesia</code>·directory·becomes·the·current |
| 240 | working·directory·on·the·node·where·the·Erlang·shell·is·started.</p></li></ul><p>To·start·the·<code·class="inline">Company</code>·database·and·get·it·running·on·the·two·specified·nodes, | 240 | working·directory·on·the·node·where·the·Erlang·shell·is·started.</p></li></ul><p>To·start·the·<code·class="inline">Company</code>·database·and·get·it·running·on·the·two·specified·nodes, |
| 241 | enter·the·following·commands:</p><ol><li>On·the·node·<code·class="inline">a@gin</code>:</li></ol><pre><code·class="text">·gin·%·erl·-sname·a··-mnesia·dir·'"/ldisc/scratch/Mnesia.company"'</code></pre><ol·start="2"><li>On·the·node·<code·class="inline">b@skeppet</code>:</li></ol><pre><code·class="text">skeppet·%·erl·-sname·b·-mnesia·dir·'"/ldisc/scratch/Mnesia.company"'</code></pre><ol·start="3"><li>On·one·of·the·two·nodes:</li></ol><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">(a@gin)1>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_schema</span><span·class="p"·data-group-id=" | 241 | enter·the·following·commands:</p><ol><li>On·the·node·<code·class="inline">a@gin</code>:</li></ol><pre><code·class="text">·gin·%·erl·-sname·a··-mnesia·dir·'"/ldisc/scratch/Mnesia.company"'</code></pre><ol·start="2"><li>On·the·node·<code·class="inline">b@skeppet</code>:</li></ol><pre><code·class="text">skeppet·%·erl·-sname·b·-mnesia·dir·'"/ldisc/scratch/Mnesia.company"'</code></pre><ol·start="3"><li>On·one·of·the·two·nodes:</li></ol><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">(a@gin)1>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_schema</span><span·class="p"·data-group-id="3980274437-1">(</span><span·class="p"·data-group-id="3980274437-2">[</span><span·class="ss">a@gin</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">b@skeppet</span><span·class="p"·data-group-id="3980274437-2">]</span><span·class="p"·da[·...·truncated·by·diffoscope;·len:·23,·SHA:·73cf74d71aaa1e18e60292c2a865f58869322b7dff6ed8188e2bd63182fd1a92·...·]-1">)</span><span·class="p">.</span></code></pre><ol·start="4"><li>The·function·<a·href="mnesia.html#start/0"><code·class="inline">mnesia:start()</code></a>·is·called·on·both·nodes.</li><li>To·initialize·the·database,·execute·the·following·code·on·one·of·the·two |
| 242 | nodes:</li></ol><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">dist_init</span><span·class="p"·data-group-id=" | 242 | nodes:</li></ol><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">dist_init</span><span·class="p"·data-group-id="9528167231-1">(</span><span·class="p"·data-group-id="9528167231-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 243 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id=" | 243 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id="9528167231-2">(</span><span·class="ss">employee</span><span·class="p">,</span><span·class="w"> |
| 244 | ·························</span><span·class="p"·data-group-id=" | 244 | ·························</span><span·class="p"·data-group-id="9528167231-3">[</span><span·class="p"·data-group-id="9528167231-4">{</span><span·class="ss">ram_copies</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9528167231-5">[</span><span·class="ss">a@gin</span><span·class="p">,[·...·truncated·by·diffoscope;·len:·158,·SHA:·61fb41a7d78277b216ff34e3cdb2d31cdfca5f3bb22b06194f6ce7f3ff811b6d·...·]-4">}</span><span·class="p">,</span><span·class="w"> |
| 245 | ··························</span><span·class="p"·data-group-id=" | 245 | ··························</span><span·class="p"·data-group-id="9528167231-6">{</span><span·class="ss">attributes</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">record_info</span><span·class="p"·data-group-id="9528167231-7">(</span><span·class="ss">fields</span><span·class="p">,</span><span·class="w"> |
| 246 | ···················································</span><span·class="ss">employee</span><span·class="p"·data-group-id=" | 246 | ···················································</span><span·class="ss">employee</span><span·class="p"·data-group-id="9528167231-7">)</span><span·class="p"·data-group-id="9528167231-6">}</span><span·class="p"·data-group-id="9528167231-3">]</span><span·class="p"·data-group-id="9528167231-2">)</span><span·class="p">,</span><span·class="w"> |
| 247 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id=" | 247 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id="9528167231-8">(</span><span·class="ss">dept</span><span·class="p">,</span><span·class="w"> |
| 248 | ·························</span><span·class="p"·data-group-id=" | 248 | ·························</span><span·class="p"·data-group-id="9528167231-9">[</span><span·class="p"·data-group-id="9528167231-10">{</span><span·class="ss">ram_copies</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9528167231-11">[</span><span·class="ss">a@gin</span><span·class="p"[·...·truncated·by·diffoscope;·len:·161,·SHA:·8282c75cde194beed4126757e800c8c981a35b2c37771c1aea2d33a5e18cfad8·...·]-10">}</span><span·class="p">,</span><span·class="w"> |
| 249 | ··························</span><span·class="p"·data-group-id=" | 249 | ··························</span><span·class="p"·data-group-id="9528167231-12">{</span><span·class="ss">attributes</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">record_info</span><span·class="p"·data-group-id="9528167231-13">(</span><span·class="ss">fields</span><span·class="p">,</span><span·cl[·...·truncated·by·diffoscope;·len:·246,·SHA:·feb1da3e1735b2882d777617d2b0dc1e2257f5f741005747144bcf0ef2ea84a7·...·]-8">)</span><span·class="p">,</span><span·class="w"> |
| 250 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id=" | 250 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id="9528167231-14">(</span><span·class="ss">project</span><span·class="p">,</span><span·class="w"> |
| 251 | ·························</span><span·class="p"·data-group-id=" | 251 | ·························</span><span·class="p"·data-group-id="9528167231-15">[</span><span·class="p"·data-group-id="9528167231-16">{</span><span·class="ss">ram_copies</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9528167231-17">[</span><span·class="ss">a@gin</span><span·class="p[·...·truncated·by·diffoscope;·len:·162,·SHA:·d4141233f8a578f2c34ed3cdbd7829961d42342cc7482b03ea4842b9a1a4b39a·...·]-16">}</span><span·class="p">,</span><span·class="w"> |
| 252 | ··························</span><span·class="p"·data-group-id=" | 252 | ··························</span><span·class="p"·data-group-id="9528167231-18">{</span><span·class="ss">attributes</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">record_info</span><span·class="p"·data-group-id="9528167231-19">(</span><span·class="ss">fields</span><span·class="p">,</span><span·cl[·...·truncated·by·diffoscope;·len:·250,·SHA:·9f4406fe0029850a75e6e5d8f0cc03a70d3b29cb8dfe629f5e1b92b9ee7cfacb·...·]-14">)</span><span·class="p">,</span><span·class="w"> |
| 253 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id=" | 253 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id="9528167231-20">(</span><span·class="ss">manager</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9528167231-21">[</span><span·class="p"·data-group-id="9528167231-22">{</span><span·class="ss">type</span><span·class="p">,<[·...·truncated·by·diffoscope;·len:·98,·SHA:·88eb218903e7de59274218ec82c02133d5be9f3885f8531b257454cd965b61cc·...·]-22">}</span><span·class="p">,</span><span·class="w"> |
| 254 | ··································</span><span·class="p"·data-group-id=" | 254 | ··································</span><span·class="p"·data-group-id="9528167231-23">{</span><span·class="ss">ram_copies</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9528167231-24">[</span><span·class="ss">a@gin</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">b@s[·...·truncated·by·diffoscope;·len:·108,·SHA:·d46e430344aba1d6d3352817ceff0576c7dd7753dd31b8581b779dcdf363861a·...·]-23">}</span><span·class="p">,</span><span·class="w"> |
| 255 | ··································</span><span·class="p"·data-group-id=" | 255 | ··································</span><span·class="p"·data-group-id="9528167231-25">{</span><span·class="ss">attributes</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">record_info</span><span·class="p"·data-group-id="9528167231-26">(</span><span·class="ss">fields</span><span·class="p">,</span><span·class="w"> |
| 256 | ···························································</span><span·class="ss">manager</span><span·class="p"·data-group-id=" | 256 | ···························································</span><span·class="ss">manager</span><span·class="p"·data-group-id="9528167231-26">)</span><span·class="p"·data-group-id="9528167231-25">}</span><span·class="p"·data-group-id="9528167231-21">]</span><span·class="p"·data-group-id="9528167231-20">)</span><span·class="p">,</span><span·class="w"> |
| 257 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id=" | 257 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id="9528167231-27">(</span><span·class="ss">at_dep</span><span·class="p">,</span><span·class="w"> |
| 258 | ·························</span><span·class="p"·data-group-id=" | 258 | ·························</span><span·class="p"·data-group-id="9528167231-28">[</span><span·class="p"·data-group-id="9528167231-29">{</span><span·class="ss">ram_copies</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9528167231-30">[</span><span·class="ss">a@gin</span><span·class="p[·...·truncated·by·diffoscope;·len:·162,·SHA:·9a0229682560a634d880771ad76c7a21745ed3b7cfe8c261e31d0c4a3d8cbc49·...·]-29">}</span><span·class="p">,</span><span·class="w"> |
| 259 | ··························</span><span·class="p"·data-group-id=" | 259 | ··························</span><span·class="p"·data-group-id="9528167231-31">{</span><span·class="ss">attributes</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">record_info</span><span·class="p"·data-group-id="9528167231-32">(</span><span·class="ss">fields</span><span·class="p">,</span><span·cl[·...·truncated·by·diffoscope;·len:·249,·SHA:·0548ff87d05756e91d0492e49744fffa3e080fecd0250204f27256b1a7631a52·...·]-27">)</span><span·class="p">,</span><span·class="w"> |
| 260 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id=" | 260 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id="9528167231-33">(</span><span·class="ss">in_proj</span><span·class="p">,</span><span·class="w"> |
| 261 | ························</span><span·class="p"·data-group-id=" | 261 | ························</span><span·class="p"·data-group-id="9528167231-34">[</span><span·class="p"·data-group-id="9528167231-35">{</span><span·class="ss">type</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">bag</span><span·class="p"·data-group-id="9528167231-35">}</span><span·class="p">,</span><span·class="w"> |
| 262 | ·························</span><span·class="p"·data-group-id=" | 262 | ·························</span><span·class="p"·data-group-id="9528167231-36">{</span><span·class="ss">ram_copies</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9528167231-37">[</span><span·class="ss">a@gin</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">b@s[·...·truncated·by·diffoscope;·len:·108,·SHA:·d485da74ba4d0800d6d35cd796ccd1a5f4c6e8a37d5b2df13f62b6c748b94659·...·]-36">}</span><span·class="p">,</span><span·class="w"> |
| 263 | ·························</span><span·class="p"·data-group-id=" | 263 | ·························</span><span·class="p"·data-group-id="9528167231-38">{</span><span·class="ss">attributes</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">record_info</span><span·class="p"·data-group-id="9528167231-39">(</span><span·class="ss">fields</span><span·class="p">,</span><span·cl[·...·truncated·by·diffoscope;·len:·250,·SHA:·8d52b7802ed1ddb59457f387d52017678ad1b197ed435f8f33e55b64bb35adc5·...·]-33">)</span><span·class="p">.</span></code></pre><p>As·illustrated,·the·two·directories·reside·on·different·nodes,·because |
| 264 | <code·class="inline">/ldisc/scratch</code>·(the·"local"·disc)·exists·on·the·two·different·nodes.</p><p>By·executing·these·commands,·two·Erlang·nodes·are·configured·to·run·the | 264 | <code·class="inline">/ldisc/scratch</code>·(the·"local"·disc)·exists·on·the·two·different·nodes.</p><p>By·executing·these·commands,·two·Erlang·nodes·are·configured·to·run·the |
| 265 | <code·class="inline">Company</code>·database,·and·therefore,·initialize·the·database.·This·is·required | 265 | <code·class="inline">Company</code>·database,·and·therefore,·initialize·the·database.·This·is·required |
| 266 | only·once·when·setting·up.·The·next·time·the·system·is·started, | 266 | only·once·when·setting·up.·The·next·time·the·system·is·started, |
| 267 | <a·href="mnesia.html#start/0"><code·class="inline">mnesia:start()</code></a>·is·called·on·both·nodes,·to·initialize·the | 267 | <a·href="mnesia.html#start/0"><code·class="inline">mnesia:start()</code></a>·is·called·on·both·nodes,·to·initialize·the |
| 268 | system·from·disc.</p><p>In·a·system·of·<code·class="inline">Mnesia</code>·nodes,·every·node·is·aware·of·the·current·location·of | 268 | system·from·disc.</p><p>In·a·system·of·<code·class="inline">Mnesia</code>·nodes,·every·node·is·aware·of·the·current·location·of |
| 269 | all·tables.·In·this·example,·data·is·replicated·on·both·nodes·and·functions·that | 269 | all·tables.·In·this·example,·data·is·replicated·on·both·nodes·and·functions·that |
| 270 | manipulate·the·data·in·the·tables·can·be·executed·on·either·of·the·two·nodes. | 270 | manipulate·the·data·in·the·tables·can·be·executed·on·either·of·the·two·nodes. |
| Offset 273, 15 lines modified | Offset 273, 15 lines modified | ||
| 273 | the·function·is·executed.·The·functions·<a·href="mnesia.html#start/0"><code·class="inline">mnesia:start/0</code></a>·and·<a·href="mnesia.html#stop/0"><code·class="inline">mnesia:stop/0</code></a> | 273 | the·function·is·executed.·The·functions·<a·href="mnesia.html#start/0"><code·class="inline">mnesia:start/0</code></a>·and·<a·href="mnesia.html#stop/0"><code·class="inline">mnesia:stop/0</code></a> |
| 274 | work·on·the·"local"·<code·class="inline">Mnesia</code>·system.·No·functions·start·or·stop·a·set·of·nodes.</p><h3·id="startup-procedure"·class="section-heading"> | 274 | work·on·the·"local"·<code·class="inline">Mnesia</code>·system.·No·functions·start·or·stop·a·set·of·nodes.</p><h3·id="startup-procedure"·class="section-heading"> |
| 275 | ··<a·href="#startup-procedure"·class="hover-link"> | 275 | ··<a·href="#startup-procedure"·class="hover-link"> |
| 276 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 276 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 277 | ··</a> | 277 | ··</a> |
| 278 | ··<span·class="text">Startup·Procedure</span> | 278 | ··<span·class="text">Startup·Procedure</span> |
| 279 | </h3> | 279 | </h3> |
| 280 | <p>Start·<code·class="inline">Mnesia</code>·by·calling·the·following·function:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 280 | <p>Start·<code·class="inline">Mnesia</code>·by·calling·the·following·function:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="1767547593-1">(</span><span·class="p"·data-group-id="1767547593-1">)</span><span·class="p">.</span></code></pre><p>This·function·initiates·the·DBMS·locally.</p><p>The·choice·of·configuration·alters·the·location·and·load·order·of·the·tables. |
| 281 | The·alternatives·are·as·follows:</p><ol><li>Tables·that·are·only·stored·locally·are·initialized·from·the·local·<code·class="inline">Mnesia</code> | 281 | The·alternatives·are·as·follows:</p><ol><li>Tables·that·are·only·stored·locally·are·initialized·from·the·local·<code·class="inline">Mnesia</code> |
| 282 | directory.</li><li>Replicated·tables·that·reside·locally·as·well·as·somewhere·else·are·either | 282 | directory.</li><li>Replicated·tables·that·reside·locally·as·well·as·somewhere·else·are·either |
| 283 | initiated·from·disc·or·by·copying·the·entire·table·from·the·other·node, | 283 | initiated·from·disc·or·by·copying·the·entire·table·from·the·other·node, |
| 284 | depending·on·which·of·the·different·replicas·are·the·most·recent.·<code·class="inline">Mnesia</code> | 284 | depending·on·which·of·the·different·replicas·are·the·most·recent.·<code·class="inline">Mnesia</code> |
| 285 | determines·which·of·the·tables·are·the·most·recent.</li><li>Tables·that·reside·on·remote·nodes·are·available·to·other·nodes·as·soon·as | 285 | determines·which·of·the·tables·are·the·most·recent.</li><li>Tables·that·reside·on·remote·nodes·are·available·to·other·nodes·as·soon·as |
| 286 | they·are·loaded.</li></ol><p>Table·initialization·is·asynchronous.·The·function·call | 286 | they·are·loaded.</li></ol><p>Table·initialization·is·asynchronous.·The·function·call |
| 287 | <a·href="mnesia.html#start/0"><code·class="inline">mnesia:start()</code></a>·returns·the·atom·<code·class="inline">ok</code>·and·then·starts·to | 287 | <a·href="mnesia.html#start/0"><code·class="inline">mnesia:start()</code></a>·returns·the·atom·<code·class="inline">ok</code>·and·then·starts·to |
| Offset 296, 17 lines modified | Offset 296, 17 lines modified | ||
| 296 | situation,·a·call·to·<a·href="mnesia.html#wait_for_tables/2"><code·class="inline">mnesia:wait_for_tables/2</code></a>,·suspends·the·caller·until·the | 296 | situation,·a·call·to·<a·href="mnesia.html#wait_for_tables/2"><code·class="inline">mnesia:wait_for_tables/2</code></a>,·suspends·the·caller·until·the |
| 297 | remote·node·has·initialized·the·table·from·its·local·disc·and·the·node·has | 297 | remote·node·has·initialized·the·table·from·its·local·disc·and·the·node·has |
| 298 | copied·the·table·over·the·network·to·the·local·node.</p><p>However,·this·procedure·can·be·time-consuming,·the·shortcut·function | 298 | copied·the·table·over·the·network·to·the·local·node.</p><p>However,·this·procedure·can·be·time-consuming,·the·shortcut·function |
| 299 | <a·href="mnesia.html#force_load_table/1"><code·class="inline">mnesia:force_load_table(Tab)</code></a>·loads·all·the·tables | 299 | <a·href="mnesia.html#force_load_table/1"><code·class="inline">mnesia:force_load_table(Tab)</code></a>·loads·all·the·tables |
| 300 | from·disc·at·a·faster·rate.·The·function·forces·tables·to·be·loaded·from·disc | 300 | from·disc·at·a·faster·rate.·The·function·forces·tables·to·be·loaded·from·disc |
| 301 | regardless·of·the·network·situation.</p><p>Thus,·it·can·be·assumed·that·if·an·application·wants·to·use·tables·<code·class="inline">a</code>·and·<code·class="inline">b</code>, | 301 | regardless·of·the·network·situation.</p><p>Thus,·it·can·be·assumed·that·if·an·application·wants·to·use·tables·<code·class="inline">a</code>·and·<code·class="inline">b</code>, |
| 302 | the·application·must·perform·some·action·similar·to·following·before·it·can·use | 302 | the·application·must·perform·some·action·similar·to·following·before·it·can·use |
| 303 | the·tables:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">case</span><span·class="w">·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">wait_for_tables</span><span·class="p"·data-group-id="8 | 303 | the·tables:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">case</span><span·class="w">·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">wait_for_tables</span><span·class="p"·data-group-id="8482113485-1">(</span><span·class="p"·data-group-id="8482113485-2">[</span><span·class="ss">a</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">b</span><span·class="p"·data-group-id="8482113485-2">]</span><span·class="p">,</span><span·c[·...·truncated·by·diffoscope;·len:·87,·SHA:·382063b79b609a0009981b3f8b433569f7882b31c73d49774a991415017fe3e2·...·]-1">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 304 | ··</span><span·class="p"·data-group-id="8 | 304 | ··</span><span·class="p"·data-group-id="8482113485-3">{</span><span·class="ss">timeout</span><span·class="p">,</span><span·class="w">·</span><span·class="n">RemainingTabs</span><span·class="p"·data-group-id="8482113485-3">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 305 | ····</span><span·class="nf">panic</span><span·class="p"·data-group-id="8 | 305 | ····</span><span·class="nf">panic</span><span·class="p"·data-group-id="8482113485-4">(</span><span·class="n">RemainingTabs</span><span·class="p"·data-group-id="8482113485-4">)</span><span·class="p">;</span><span·class="w"> |
| 306 | ··</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 306 | ··</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 307 | ····</span><span·class="ss">synced</span><span·class="w"> | 307 | ····</span><span·class="ss">synced</span><span·class="w"> |
| 308 | </span><span·class="k">end</span><span·class="p">.</span></code></pre><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>When·tables·are·forcefully·loaded·from·the·local·disc,·all·operations·that | 308 | </span><span·class="k">end</span><span·class="p">.</span></code></pre><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>When·tables·are·forcefully·loaded·from·the·local·disc,·all·operations·that |
| 309 | were·performed·on·the·replicated·table·while·the·local·node·was·down,·and·the | 309 | were·performed·on·the·replicated·table·while·the·local·node·was·down,·and·the |
| 310 | remote·replica·was·alive,·are·lost.·This·can·cause·the·database·to·become | 310 | remote·replica·was·alive,·are·lost.·This·can·cause·the·database·to·become |
| 311 | inconsistent.</p></section><p>If·the·startup·procedure·fails,·the·function·<a·href="mnesia.html#start/0"><code·class="inline">mnesia:start()</code></a> | 311 | inconsistent.</p></section><p>If·the·startup·procedure·fails,·the·function·<a·href="mnesia.html#start/0"><code·class="inline">mnesia:start()</code></a> |
| 312 | returns·the·cryptic·tuple | 312 | returns·the·cryptic·tuple |
| Offset 324, 21 lines modified | Offset 324, 21 lines modified | ||
| 324 | the·records·that·constitute·the·table.·For·details,·see·<code·class="inline">record_name</code>.</li><li><code·class="inline">Opts</code>·is·a·list·of·<code·class="inline">{Key,Value}</code>·tuples.·The·following·options·are | 324 | the·records·that·constitute·the·table.·For·details,·see·<code·class="inline">record_name</code>.</li><li><code·class="inline">Opts</code>·is·a·list·of·<code·class="inline">{Key,Value}</code>·tuples.·The·following·options·are |
| 325 | valid:<ul><li><p><code·class="inline">{type,·Type}</code>,·where·<code·class="inline">Type</code>·must·be·either·of·the·atoms·<code·class="inline">set</code>, | 325 | valid:<ul><li><p><code·class="inline">{type,·Type}</code>,·where·<code·class="inline">Type</code>·must·be·either·of·the·atoms·<code·class="inline">set</code>, |
| 326 | <code·class="inline">ordered_set</code>,·or·<code·class="inline">bag</code>.·Default·is·<code·class="inline">set</code>.</p><p>Notice·that·currently·<code·class="inline">ordered_set</code>·is·not·supported·for·<code·class="inline">disc_only_copies</code> | 326 | <code·class="inline">ordered_set</code>,·or·<code·class="inline">bag</code>.·Default·is·<code·class="inline">set</code>.</p><p>Notice·that·currently·<code·class="inline">ordered_set</code>·is·not·supported·for·<code·class="inline">disc_only_copies</code> |
| 327 | tables.</p><p>A·table·of·type·<code·class="inline">set</code>·or·<code·class="inline">ordered_set</code>·has·either·zero·or·one·record·per | 327 | tables.</p><p>A·table·of·type·<code·class="inline">set</code>·or·<code·class="inline">ordered_set</code>·has·either·zero·or·one·record·per |
| 328 | key,·whereas·a·table·of·type·<code·class="inline">bag</code>·can·have·an·arbitrary·number·of·records | 328 | key,·whereas·a·table·of·type·<code·class="inline">bag</code>·can·have·an·arbitrary·number·of·records |
| 329 | per·key.·The·key·for·each·record·is·always·the·first·attribute·of·the | 329 | per·key.·The·key·for·each·record·is·always·the·first·attribute·of·the |
| 330 | record.</p><p>The·following·example·illustrates·the·difference·between·type·<code·class="inline">set</code>·and | 330 | record.</p><p>The·following·example·illustrates·the·difference·between·type·<code·class="inline">set</code>·and |
| 331 | <code·class="inline">bag</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="nf">f</span><span·class="p"·data-group-id=" | 331 | <code·class="inline">bag</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="nf">f</span><span·class="p"·data-group-id="7812584399-1">(</span><span·class="p"·data-group-id="7812584399-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 332 | ····</span><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 332 | ····</span><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="7812584399-2">(</span><span·class="p"·data-group-id="7812584399-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 333 | ··········</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id=" | 333 | ··········</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id="7812584399-3">(</span><span·class="p"·data-group-id="7812584399-4">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">2</span><span·cl[·...·truncated·by·diffoscope;·len:·86,·SHA:·0b8f9d04c56d6459727bdb43411abee99cceab9176c5351d5aad7c3fb9aaac96·...·]-3">)</span><span·class="p">,</span><span·class="w"> |
| 334 | ··········</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id=" | 334 | ··········</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id="7812584399-5">(</span><span·class="p"·data-group-id="7812584399-6">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">3</span><span·cl[·...·truncated·by·diffoscope;·len:·86,·SHA:·d391a9dedf1dc88173998873dc9ea97f3e9aab8cb82b108abd510dd4366b0f4b·...·]-5">)</span><span·class="p">,</span><span·class="w"> |
| 335 | ··········</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">read</span><span·class="p"·data-group-id=" | 335 | ··········</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">read</span><span·class="p"·data-group-id="7812584399-7">(</span><span·class="p"·data-group-id="7812584399-8">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="7812584399-8">}</span><span·class="p"·data-group-i[·...·truncated·by·diffoscope;·len:·13,·SHA:·17907e04d6d808cefac353d6bb53fcaeeda59f2738f5e251fb9210b37934ae4c·...·]-7">)</span><span·class="w"> |
| 336 | ········</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 336 | ········</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 337 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">transaction</span><span·class="p"·data-group-id=" | 337 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">transaction</span><span·class="p"·data-group-id="7812584399-9">(</span><span·class="n">F</span><span·class="p"·data-group-id="7812584399-9">)</span><span·class="p">.</span></code></pre><p>This·transaction·returns·the·list·<code·class="inline">[{foo,1,3}]</code>·if·table·<code·class="inline">foo</code>·is·of·type |
| 338 | <code·class="inline">set</code>.·However,·the·list·<code·class="inline">[{foo,1,2},·{foo,1,3}]</code>·is·returned·if·the·table | 338 | <code·class="inline">set</code>.·However,·the·list·<code·class="inline">[{foo,1,2},·{foo,1,3}]</code>·is·returned·if·the·table |
| 339 | is·of·type·<code·class="inline">bag</code>.</p><p><code·class="inline">Mnesia</code>·tables·can·never·contain·duplicates·of·the·same·record·in·the·same | 339 | is·of·type·<code·class="inline">bag</code>.</p><p><code·class="inline">Mnesia</code>·tables·can·never·contain·duplicates·of·the·same·record·in·the·same |
| 340 | table.·Duplicate·records·have·attributes·with·the·same·contents·and·key.</p></li><li><p><code·class="inline">{disc_copies,·NodeList}</code>,·where·<code·class="inline">NodeList</code>·is·a·list·of·the·nodes·where | 340 | table.·Duplicate·records·have·attributes·with·the·same·contents·and·key.</p></li><li><p><code·class="inline">{disc_copies,·NodeList}</code>,·where·<code·class="inline">NodeList</code>·is·a·list·of·the·nodes·where |
| 341 | this·table·is·to·reside·on·disc.</p><p>Write·operations·to·a·table·replica·of·type·<code·class="inline">disc_copies</code>·write·data·to·the | 341 | this·table·is·to·reside·on·disc.</p><p>Write·operations·to·a·table·replica·of·type·<code·class="inline">disc_copies</code>·write·data·to·the |
| 342 | disc·copy·and·to·the·RAM·copy·of·the·table.</p><p>It·is·possible·to·have·a·replicated·table·of·type·<code·class="inline">disc_copies</code>·on·one·node, | 342 | disc·copy·and·to·the·RAM·copy·of·the·table.</p><p>It·is·possible·to·have·a·replicated·table·of·type·<code·class="inline">disc_copies</code>·on·one·node, |
| 343 | and·the·same·table·stored·as·a·different·type·on·another·node.·Default·is | 343 | and·the·same·table·stored·as·a·different·type·on·another·node.·Default·is |
| 344 | <code·class="inline">[]</code>.·This·arrangement·is·desirable·if·the·following·operational | 344 | <code·class="inline">[]</code>.·This·arrangement·is·desirable·if·the·following·operational |
| Offset 374, 19 lines modified | Offset 374, 19 lines modified | ||
| 374 | possible·for·you·to·provide·the·attribute·names·or·to·use·the | 374 | possible·for·you·to·provide·the·attribute·names·or·to·use·the |
| 375 | <code·class="inline">record_info/2</code>·notation.</p><p>It·is·recommended·to·use·the·<code·class="inline">record_info/2</code>·notation,·as·it·becomes·easier | 375 | <code·class="inline">record_info/2</code>·notation.</p><p>It·is·recommended·to·use·the·<code·class="inline">record_info/2</code>·notation,·as·it·becomes·easier |
| 376 | to·maintain·the·program·and·the·program·becomes·more·robust·with·regards·to | 376 | to·maintain·the·program·and·the·program·becomes·more·robust·with·regards·to |
| 377 | future·record·changes.</p></li><li><p><code·class="inline">{record_name,·Atom}</code>·specifies·the·common·name·of·all·records·stored·in·the | 377 | future·record·changes.</p></li><li><p><code·class="inline">{record_name,·Atom}</code>·specifies·the·common·name·of·all·records·stored·in·the |
| 378 | table.·All·records·stored·in·the·table·must·have·this·name·as·their·first | 378 | table.·All·records·stored·in·the·table·must·have·this·name·as·their·first |
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| 141 | <p>Transactions·are·important·when·designing·fault-tolerant,·distributed·systems.·A | 141 | <p>Transactions·are·important·when·designing·fault-tolerant,·distributed·systems.·A |
| 142 | <code·class="inline">Mnesia</code>·transaction·is·a·mechanism·by·which·a·series·of·database·operations·can | 142 | <code·class="inline">Mnesia</code>·transaction·is·a·mechanism·by·which·a·series·of·database·operations·can |
| 143 | be·executed·as·one·functional·block.·The·functional·block·that·is·run·as·a | 143 | be·executed·as·one·functional·block.·The·functional·block·that·is·run·as·a |
| 144 | transaction·is·called·a·Functional·Object·(Fun),·and·this·code·can·read,·write, | 144 | transaction·is·called·a·Functional·Object·(Fun),·and·this·code·can·read,·write, |
| 145 | and·delete·<code·class="inline">Mnesia</code>·records.·The·Fun·is·evaluated·as·a·transaction·that·either | 145 | and·delete·<code·class="inline">Mnesia</code>·records.·The·Fun·is·evaluated·as·a·transaction·that·either |
| 146 | commits·or·terminates.·If·a·transaction·succeeds·in·executing·the·Fun,·it | 146 | commits·or·terminates.·If·a·transaction·succeeds·in·executing·the·Fun,·it |
| 147 | replicates·the·action·on·all·nodes·involved,·or·terminates·if·an·error·occurs.</p><p>The·following·example·shows·a·transaction·that·raises·the·salary·of·certain | 147 | replicates·the·action·on·all·nodes·involved,·or·terminates·if·an·error·occurs.</p><p>The·following·example·shows·a·transaction·that·raises·the·salary·of·certain |
| 148 | employee·numbers:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">raise</span><span·class="p"·data-group-id=" | 148 | employee·numbers:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">raise</span><span·class="p"·data-group-id="1941568775-1">(</span><span·class="n">Eno</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Raise</span><span·class="p"·data-group-id="1941568775-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 149 | ····</span><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 149 | ····</span><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="1941568775-2">(</span><span·class="p"·data-group-id="1941568775-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 150 | ················</span><span·class="p"·data-group-id=" | 150 | ················</span><span·class="p"·data-group-id="1941568775-3">[</span><span·class="n">E</span><span·class="p"·data-group-id="1941568775-3">]</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">read</span><sp[·...·truncated·by·diffoscope;·len:·274,·SHA:·1db113f4363fea8e10845a09c58706b3875583a401961f88800cc062ff60b8f3·...·]-4">)</span><span·class="p">,</span><span·class="w"> |
| 151 | ················</span><span·class="n">Salary</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">E</span><span·class="o">#</span><span·class="ss">employee</span><span·class="p">.</span><span·class="ss">salary</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="n">Raise</span><span·class="p">,</span><span·class="w"> | 151 | ················</span><span·class="n">Salary</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">E</span><span·class="o">#</span><span·class="ss">employee</span><span·class="p">.</span><span·class="ss">salary</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="n">Raise</span><span·class="p">,</span><span·class="w"> |
| 152 | ················</span><span·class="n">New</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">E</span><span·class="o">#</span><span·class="ss">employee</span><span·class="p"·data-group-id=" | 152 | ················</span><span·class="n">New</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">E</span><span·class="o">#</span><span·class="ss">employee</span><span·class="p"·data-group-id="1941568775-5">{</span><span·class="ss">salary</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Salary</span><span·class="p"·data-group-id="1941568775-5">}</span><span·class="p">,</span><span·class="w"> |
| 153 | ················</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id=" | 153 | ················</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id="1941568775-6">(</span><span·class="n">New</span><span·class="p"·data-group-id="1941568775-6">)</span><span·class="w"> |
| 154 | ········</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 154 | ········</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 155 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">transaction</span><span·class="p"·data-group-id=" | 155 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">transaction</span><span·class="p"·data-group-id="1941568775-7">(</span><span·class="n">F</span><span·class="p"·data-group-id="1941568775-7">)</span><span·class="p">.</span></code></pre><p>The·function·<code·class="inline">raise/2</code>·contains·a·Fun·made·up·of·four·code·lines.·This·Fun·is |
| 156 | called·by·the·statement·<code·class="inline">mnesia:transaction(F)</code>·and·returns·a·value.</p><p>The·<code·class="inline">Mnesia</code>·transaction·system·facilitates·the·construction·of·reliable, | 156 | called·by·the·statement·<code·class="inline">mnesia:transaction(F)</code>·and·returns·a·value.</p><p>The·<code·class="inline">Mnesia</code>·transaction·system·facilitates·the·construction·of·reliable, |
| 157 | distributed·systems·by·providing·the·following·important·properties:</p><ul><li>The·transaction·handler·ensures·that·a·Fun,·which·is·placed·inside·a | 157 | distributed·systems·by·providing·the·following·important·properties:</p><ul><li>The·transaction·handler·ensures·that·a·Fun,·which·is·placed·inside·a |
| 158 | transaction,·does·not·interfere·with·operations·embedded·in·other·transactions | 158 | transaction,·does·not·interfere·with·operations·embedded·in·other·transactions |
| 159 | when·it·executes·a·series·of·operations·on·tables.</li><li>The·transaction·handler·ensures·that·either·all·operations·in·the·transaction | 159 | when·it·executes·a·series·of·operations·on·tables.</li><li>The·transaction·handler·ensures·that·either·all·operations·in·the·transaction |
| 160 | are·performed·successfully·on·all·nodes·atomically,·or·the·transaction·fails | 160 | are·performed·successfully·on·all·nodes·atomically,·or·the·transaction·fails |
| 161 | without·permanent·effect·on·any·node.</li><li>The·<code·class="inline">Mnesia</code>·transactions·have·four·important·properties,·called·<em>A</em>tomicity, | 161 | without·permanent·effect·on·any·node.</li><li>The·<code·class="inline">Mnesia</code>·transactions·have·four·important·properties,·called·<em>A</em>tomicity, |
| 162 | <em>C</em>onsistency,·<em>I</em>solation,·and·<em>D</em>urability·(ACID).·These·properties·are | 162 | <em>C</em>onsistency,·<em>I</em>solation,·and·<em>D</em>urability·(ACID).·These·properties·are |
| Offset 242, 23 lines modified | Offset 242, 23 lines modified | ||
| 242 | code·these·operations.</p><p>Deadlocks·can·occur·when·concurrent·processes·set·and·release·locks·on·the·same | 242 | code·these·operations.</p><p>Deadlocks·can·occur·when·concurrent·processes·set·and·release·locks·on·the·same |
| 243 | records.·<code·class="inline">Mnesia</code>·employs·a·"wait-die"·strategy·to·resolve·these·situations.·If | 243 | records.·<code·class="inline">Mnesia</code>·employs·a·"wait-die"·strategy·to·resolve·these·situations.·If |
| 244 | <code·class="inline">Mnesia</code>·suspects·that·a·deadlock·can·occur·when·a·transaction·tries·to·set·a | 244 | <code·class="inline">Mnesia</code>·suspects·that·a·deadlock·can·occur·when·a·transaction·tries·to·set·a |
| 245 | lock,·the·transaction·is·forced·to·release·all·its·locks·and·sleep·for·a·while. | 245 | lock,·the·transaction·is·forced·to·release·all·its·locks·and·sleep·for·a·while. |
| 246 | The·Fun·in·the·transaction·is·evaluated·once·more.</p><p>It·is·therefore·important·that·the·code·inside·the·Fun·given·to | 246 | The·Fun·in·the·transaction·is·evaluated·once·more.</p><p>It·is·therefore·important·that·the·code·inside·the·Fun·given·to |
| 247 | <a·href="mnesia.html#transaction/1"><code·class="inline">mnesia:transaction/1</code></a>·is·pure.·Some·strange·results·can·occur·if,·for·example, | 247 | <a·href="mnesia.html#transaction/1"><code·class="inline">mnesia:transaction/1</code></a>·is·pure.·Some·strange·results·can·occur·if,·for·example, |
| 248 | messages·are·sent·by·the·transaction·Fun.·The·following·example·illustrates·this | 248 | messages·are·sent·by·the·transaction·Fun.·The·following·example·illustrates·this |
| 249 | situation:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">bad_raise</span><span·class="p"·data-group-id="0 | 249 | situation:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">bad_raise</span><span·class="p"·data-group-id="0189231223-1">(</span><span·class="n">Eno</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Raise</span><span·class="p"·data-group-id="0189231223-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 250 | ····</span><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="0 | 250 | ····</span><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="0189231223-2">(</span><span·class="p"·data-group-id="0189231223-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 251 | ················</span><span·class="p"·data-group-id="0 | 251 | ················</span><span·class="p"·data-group-id="0189231223-3">[</span><span·class="n">E</span><span·class="p"·data-group-id="0189231223-3">]</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">read</span><spa[·...·truncated·by·diffoscope;·len:·302,·SHA:·94d412268bfae8e56aff694a15cee4e18d0b865a6e66fa2774e4980c644f0b0e·...·]-4">)</span><span·class="p">,</span><span·class="w"> |
| 252 | ················</span><span·class="n">Salary</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">E</span><span·class="o">#</span><span·class="ss">employee</span><span·class="p">.</span><span·class="ss">salary</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="n">Raise</span><span·class="p">,</span><span·class="w"> | 252 | ················</span><span·class="n">Salary</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">E</span><span·class="o">#</span><span·class="ss">employee</span><span·class="p">.</span><span·class="ss">salary</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="n">Raise</span><span·class="p">,</span><span·class="w"> |
| 253 | ················</span><span·class="n">New</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">E</span><span·class="o">#</span><span·class="ss">employee</span><span·class="p"·data-group-id="0 | 253 | ················</span><span·class="n">New</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">E</span><span·class="o">#</span><span·class="ss">employee</span><span·class="p"·data-group-id="0189231223-6">{</span><span·class="ss">salary</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Salary</span><span·class="p"·data-group-id="0189231223-6">}</span><span·class="p">,</span><span·class="w"> |
| 254 | ················</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="0 | 254 | ················</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="0189231223-7">(</span><span·class="s">"Trying·to·write·...·</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0189231223-8">[</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·64,·SHA:·4b75970b2fc439ff44488b6cc7cd551cb4f08ad6624a1fc68b74d05d5f138354·...·]-7">)</span><span·class="p">,</span><span·class="w"> |
| 255 | ················</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id="0 | 255 | ················</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id="0189231223-9">(</span><span·class="n">New</span><span·class="p"·data-group-id="0189231223-9">)</span><span·class="w"> |
| 256 | ········</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 256 | ········</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 257 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">transaction</span><span·class="p"·data-group-id="0 | 257 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">transaction</span><span·class="p"·data-group-id="0189231223-10">(</span><span·class="n">F</span><span·class="p"·data-group-id="0189231223-10">)</span><span·class="p">.</span></code></pre><p>This·transaction·can·write·the·text·<code·class="inline">"Trying·to·write·...·"</code>·1000·times·to·the |
| 258 | terminal.·However,·<code·class="inline">Mnesia</code>·guarantees·that·each·transaction·will·eventually | 258 | terminal.·However,·<code·class="inline">Mnesia</code>·guarantees·that·each·transaction·will·eventually |
| 259 | run.·As·a·result,·<code·class="inline">Mnesia</code>·is·not·only·deadlock·free,·but·also·livelock·free.</p><p>The·<code·class="inline">Mnesia</code>·programmer·cannot·prioritize·one·particular·transaction·to·execute | 259 | run.·As·a·result,·<code·class="inline">Mnesia</code>·is·not·only·deadlock·free,·but·also·livelock·free.</p><p>The·<code·class="inline">Mnesia</code>·programmer·cannot·prioritize·one·particular·transaction·to·execute |
| 260 | before·other·transactions·that·are·waiting·to·execute.·As·a·result,·the·<code·class="inline">Mnesia</code> | 260 | before·other·transactions·that·are·waiting·to·execute.·As·a·result,·the·<code·class="inline">Mnesia</code> |
| 261 | DBMS·transaction·system·is·not·suitable·for·hard·real-time·applications. | 261 | DBMS·transaction·system·is·not·suitable·for·hard·real-time·applications. |
| 262 | However,·<code·class="inline">Mnesia</code>·contains·other·features·that·have·real-time·properties.</p><p><code·class="inline">Mnesia</code>·dynamically·sets·and·releases·locks·as·transactions·execute.·It·is | 262 | However,·<code·class="inline">Mnesia</code>·contains·other·features·that·have·real-time·properties.</p><p><code·class="inline">Mnesia</code>·dynamically·sets·and·releases·locks·as·transactions·execute.·It·is |
| 263 | therefore·dangerous·to·execute·code·with·transaction·side-effects.·In | 263 | therefore·dangerous·to·execute·code·with·transaction·side-effects.·In |
| 264 | particular,·a·<code·class="inline">receive</code>·statement·inside·a·transaction·can·lead·to·a·situation | 264 | particular,·a·<code·class="inline">receive</code>·statement·inside·a·transaction·can·lead·to·a·situation |
| Offset 297, 21 lines modified | Offset 297, 21 lines modified | ||
| 297 | record·when·reading·a·record,·and·lock·all·replicas·of·a·record·when·writing·a | 297 | record·when·reading·a·record,·and·lock·all·replicas·of·a·record·when·writing·a |
| 298 | record.·However,·some·applications·use·<code·class="inline">Mnesia</code>·mainly·for·its·fault-tolerant | 298 | record.·However,·some·applications·use·<code·class="inline">Mnesia</code>·mainly·for·its·fault-tolerant |
| 299 | qualities.·These·applications·can·be·configured·with·one·node·doing·all·the | 299 | qualities.·These·applications·can·be·configured·with·one·node·doing·all·the |
| 300 | heavy·work,·and·a·standby·node·that·is·ready·to·take·over·if·the·main·node | 300 | heavy·work,·and·a·standby·node·that·is·ready·to·take·over·if·the·main·node |
| 301 | fails.·Such·applications·can·benefit·from·using·sticky·locks·instead·of·the | 301 | fails.·Such·applications·can·benefit·from·using·sticky·locks·instead·of·the |
| 302 | normal·locking·scheme.</p><p>A·sticky·lock·is·a·lock·that·stays·in·place·at·a·node,·after·the·transaction | 302 | normal·locking·scheme.</p><p>A·sticky·lock·is·a·lock·that·stays·in·place·at·a·node,·after·the·transaction |
| 303 | that·first·acquired·the·lock·has·terminated.·To·illustrate·this,·assume·that·the | 303 | that·first·acquired·the·lock·has·terminated.·To·illustrate·this,·assume·that·the |
| 304 | following·transaction·is·executed:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 304 | following·transaction·is·executed:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="8751957035-1">(</span><span·class="p"·data-group-id="8751957035-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 305 | ······</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id=" | 305 | ······</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id="8751957035-2">(</span><span·class="o">#</span><span·class="ss">foo</span><span·class="p"·data-group-id="8751957035-3">{</span><span·class="ss">a</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">kalle</span><spa[·...·truncated·by·diffoscope;·len:·90,·SHA:·7d11e795efd34dda2756de4675a0d52a6711ea71b65c5ec7162b1b2b44f8037a·...·]-2">)</span><span·class="w"> |
| 306 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 306 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 307 | </span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">transaction</span><span·class="p"·data-group-id=" | 307 | </span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">transaction</span><span·class="p"·data-group-id="8751957035-4">(</span><span·class="n">F</span><span·class="p"·data-group-id="8751957035-4">)</span><span·class="p">.</span></code></pre><p>The·<code·class="inline">foo</code>·table·is·replicated·on·the·two·nodes·<code·class="inline">N1</code>·and·<code·cla[·...·truncated·by·diffoscope;·len:·557,·SHA:·8c2a3569e6a466eaa0b25fbc28ab277092f387417fd533b71b4afe203f389084·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 308 | ······</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">s_write</span><span·class="p"·data-group-id=" | 308 | ······</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">s_write</span><span·class="p"·data-group-id="2000997028-2">(</span><span·class="o">#</span><span·class="ss">foo</span><span·class="p"·data-group-id="2000997028-3">{</span><span·class="ss">a</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">kalle</span><spa[·...·truncated·by·diffoscope;·len:·90,·SHA:·1d60dbb3433d8bdf10265903dbaf1915f1833a2a06875837ce79fe944b376ce7·...·]-2">)</span><span·class="w"> |
| 309 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 309 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 310 | </span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">transaction</span><span·class="p"·data-group-id=" | 310 | </span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">transaction</span><span·class="p"·data-group-id="2000997028-4">(</span><span·class="n">F</span><span·class="p"·data-group-id="2000997028-4">)</span><span·class="p">.</span></code></pre><p>This·code·uses·the·function·<a·href="mnesia.html#s_write/1"><code·class="inline">s_write/1</code></a>·instead·of·the |
| 311 | function·<a·href="mnesia.html#write/1"><code·class="inline">write/1</code></a>·The·function·<code·class="inline">s_write/1</code>·sets·a·sticky·lock | 311 | function·<a·href="mnesia.html#write/1"><code·class="inline">write/1</code></a>·The·function·<code·class="inline">s_write/1</code>·sets·a·sticky·lock |
| 312 | instead·of·a·normal·lock.·If·the·table·is·not·replicated,·sticky·locks·have·no | 312 | instead·of·a·normal·lock.·If·the·table·is·not·replicated,·sticky·locks·have·no |
| 313 | special·effect.·If·the·table·is·replicated,·and·a·sticky·lock·is·set·on·node | 313 | special·effect.·If·the·table·is·replicated,·and·a·sticky·lock·is·set·on·node |
| 314 | <code·class="inline">N1</code>,·this·lock·then·sticks·to·node·<code·class="inline">N1</code>.·The·next·time·you·try·to·set·a·sticky | 314 | <code·class="inline">N1</code>,·this·lock·then·sticks·to·node·<code·class="inline">N1</code>.·The·next·time·you·try·to·set·a·sticky |
| 315 | lock·on·the·same·record·at·node·<code·class="inline">N1</code>,·<code·class="inline">Mnesia</code>·detects·that·the·lock·is·already | 315 | lock·on·the·same·record·at·node·<code·class="inline">N1</code>,·<code·class="inline">Mnesia</code>·detects·that·the·lock·is·already |
| 316 | set·and·do·no·network·operation·to·acquire·the·lock.</p><p>It·is·more·efficient·to·set·a·local·lock·than·it·is·to·set·a·networked·lock. | 316 | set·and·do·no·network·operation·to·acquire·the·lock.</p><p>It·is·more·efficient·to·set·a·local·lock·than·it·is·to·set·a·networked·lock. |
| 317 | Sticky·locks·can·therefore·benefit·an·application·that·uses·a·replicated·table | 317 | Sticky·locks·can·therefore·benefit·an·application·that·uses·a·replicated·table |
| Offset 329, 16 lines modified | Offset 329, 16 lines modified | ||
| 329 | locks·automatically,·and·the·programmer·does·not·need·to·code·these·operations. | 329 | locks·automatically,·and·the·programmer·does·not·need·to·code·these·operations. |
| 330 | However,·transactions·that·read·and·write·many·records·in·a·specific·table | 330 | However,·transactions·that·read·and·write·many·records·in·a·specific·table |
| 331 | execute·more·efficiently·if·the·transaction·is·started·by·setting·a·table·lock | 331 | execute·more·efficiently·if·the·transaction·is·started·by·setting·a·table·lock |
| 332 | on·this·table.·This·blocks·other·concurrent·transactions·from·the·table.·The | 332 | on·this·table.·This·blocks·other·concurrent·transactions·from·the·table.·The |
| 333 | following·two·functions·are·used·to·set·explicit·table·locks·for·read·and·write | 333 | following·two·functions·are·used·to·set·explicit·table·locks·for·read·and·write |
| 334 | operations:</p><ul><li><a·href="mnesia.html#read_lock_table/1"><code·class="inline">mnesia:read_lock_table(Tab)</code></a>·sets·a·read·lock·on | 334 | operations:</p><ul><li><a·href="mnesia.html#read_lock_table/1"><code·class="inline">mnesia:read_lock_table(Tab)</code></a>·sets·a·read·lock·on |
| 335 | table·<code·class="inline">Tab</code>.</li><li><a·href="mnesia.html#write_lock_table/1"><code·class="inline">mnesia:write_lock_table(Tab)</code></a>·sets·a·write·lock | 335 | table·<code·class="inline">Tab</code>.</li><li><a·href="mnesia.html#write_lock_table/1"><code·class="inline">mnesia:write_lock_table(Tab)</code></a>·sets·a·write·lock |
| 336 | on·table·<code·class="inline">Tab</code>.</li></ul><p>Alternative·syntax·for·acquisition·of·table·locks·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">lock</span><span·class="p"·data-group-id="9421821445-1">(</span><span·class="p"·data-group-id="9421821445-2">{</span><span·class="ss">table</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tab</span><span·class="p"·data-group-id="9421821445-2">}</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">read</span><span·class="p"·data-group-id="9421821445-1">)</span><span·class="w"> | ||
| 337 | 336 | on·table·<code·class="inline">Tab</code>.</li></ul><p>Alternative·syntax·for·acquisition·of·table·locks·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">lock</span><spa[·...·truncated·by·diffoscope;·len:·403,·SHA:·26edc1932127b6b0f87b7f0f0c1ceae420d3c334c8d2b3ea6a007febfd319051·...·] | |
| 337 | </span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">lock</span><span·class="p"·data-group-id="3829433785-3">(</span><span·class="p"·data-group-id="3829433785-4">{</span><span·class="ss">table</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tab</span><span·class="p"·data-group-id="3829433785-4">}</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">write</span><span·class="p"·data-group-id="3829433785-3">)</span></code></pre><p>The·matching·operations·in·<code·class="inline">Mnesia</code>·can·either·lock·the·entire·table·or·only·a | ||
| 338 | single·record·(when·the·key·is·bound·in·the·pattern).</p><h3·id="global-locks"·class="section-heading"> | 338 | single·record·(when·the·key·is·bound·in·the·pattern).</p><h3·id="global-locks"·class="section-heading"> |
| 339 | ··<a·href="#global-locks"·class="hover-link"> | 339 | ··<a·href="#global-locks"·class="hover-link"> |
| 340 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 340 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 341 | ··</a> | 341 | ··</a> |
| 342 | ··<span·class="text">Global·Locks</span> | 342 | ··<span·class="text">Global·Locks</span> |
| 343 | </h3> | 343 | </h3> |
| 344 | <p>Write·locks·are·normally·acquired·on·all·nodes·where·a·replica·of·the·table | 344 | <p>Write·locks·are·normally·acquired·on·all·nodes·where·a·replica·of·the·table |
| Offset 421, 86 lines modified | Offset 421, 86 lines modified | ||
| 421 | ··<span·class="text">Record·Names·versus·Table·Names</span> | 421 | ··<span·class="text">Record·Names·versus·Table·Names</span> |
| 422 | </h2> | 422 | </h2> |
| 423 | <p>In·<code·class="inline">Mnesia</code>,·all·records·in·a·table·must·have·the·same·name.·All·the·records | 423 | <p>In·<code·class="inline">Mnesia</code>,·all·records·in·a·table·must·have·the·same·name.·All·the·records |
| 424 | must·be·instances·of·the·same·record·type.·The·record·name,·however,·does·not | 424 | must·be·instances·of·the·same·record·type.·The·record·name,·however,·does·not |
| 425 | necessarily·have·to·be·the·same·as·the·table·name,·although·this·is·the·case·in | 425 | necessarily·have·to·be·the·same·as·the·table·name,·although·this·is·the·case·in |
| 426 | most·of·the·examples·in·this·User's·Guide.·If·a·table·is·created·without | 426 | most·of·the·examples·in·this·User's·Guide.·If·a·table·is·created·without |
| 427 | property·<code·class="inline">record_name</code>,·the·following·code·ensures·that·all·records·in·the | 427 | property·<code·class="inline">record_name</code>,·the·following·code·ensures·that·all·records·in·the |
| 428 | tables·have·the·same·name·as·the·table:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id=" | 428 | tables·have·the·same·name·as·the·table:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id="2661743946-1">(</span><span·class="ss">subscriber</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2661743946-2">[</span><span·class="p"·data-group-id="2661743946-2">]</span><span·class="p"·data-group-id="2661743946-1">)</span></code></pre><p>However,·if·the·table·is·created·with·an·explicit·record·name·as·argument,·as |
| 429 | shown·in·the·following·example,·subscriber·records·can·be·stored·in·both·of·the | 429 | shown·in·the·following·example,·subscriber·records·can·be·stored·in·both·of·the |
| 430 | tables·regardless·of·the·table·names:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">TabDef</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 430 | tables·regardless·of·the·table·names:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">TabDef</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4500932615-1">[</span><span·class="p"·data-group-id="4500932615-2">{</span><span·class="ss">record_name</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">subscriber</span><span·class="p"·data-group-id="4500932615-2">}</span><span·class[·...·truncated·by·diffoscope;·len:·30,·SHA:·1ba785444640968e0bfa4be3a2433090349c472c1167576b11dac0f6043a229e·...·]-1">]</span><span·class="p">,</span><span·class="w"> |
| 431 | </span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id=" | 431 | </span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id="4500932615-3">(</span><span·class="ss">my_subscriber</span><span·class="p">,</span><span·class="w">·</span><span·class="n">TabDef</span><span·class="p"·data-group-id="4500932615-3">)</span><span·class="p">,</span><span·class="w"> |
| 432 | </span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id=" | 432 | </span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id="4500932615-4">(</span><span·class="ss">your_subscriber</span><span·class="p">,</span><span·class="w">·</span><span·class="n">TabDef</span><span·class="p"·data-group-id="4500932615-4">)</span><span·class="p">.</span></code></pre><p>To·access·such·tables,·simplified·access·functions·(as·described·earlier)·cannot |
| 433 | be·used.·For·example,·writing·a·subscriber·record·into·a·table·requires·the | 433 | be·used.·For·example,·writing·a·subscriber·record·into·a·table·requires·the |
| 434 | function·<a·href="mnesia.html#write/3"><code·class="inline">mnesia:write/3</code></a>·instead·of·the·simplified·functions·<a·href="mnesia.html#write/1"><code·class="inline">mnesia:write/1</code></a> | 434 | function·<a·href="mnesia.html#write/3"><code·class="inline">mnesia:write/3</code></a>·instead·of·the·simplified·functions·<a·href="mnesia.html#write/1"><code·class="inline">mnesia:write/1</code></a> |
| 435 | and·<a·href="mnesia.html#s_write/1"><code·class="inline">mnesia:s_write/1</code></a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id=" | 435 | and·<a·href="mnesia.html#s_write/1"><code·class="inline">mnesia:s_write/1</code></a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id="8070296925-1">(</span><span·class="ss">subscriber</span><span·class="p">,</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">subscriber</span><span·class="p"·data-group-id="8070296925-2">{</span><span·class="p"·data-group-id="8070296925[·...·truncated·by·diffoscope;·len:·130,·SHA:·390ec41e96250dca5cfb56a1bad10aca7eb1cb10dd84626ca19ebbcd3c63acd8·...·]-1">)</span><span·class="w"> |
| 436 | </span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id=" | 436 | </span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id="8070296925-3">(</span><span·class="ss">my_subscriber</span><span·class="p">,</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">subscriber</span><span·class="p"·data-group-id="8070296925-4">{</span><span·class="p"·data-group-id="8070296[·...·truncated·by·diffoscope;·len:·140,·SHA:·bda5053569abbc57cccabca76174f999461afb753e9bd7b28c832feaa3f2af56·...·]-3">)</span><span·class="w"> |
| 437 | </span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id=" | 437 | </span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id="8070296925-5">(</span><span·class="ss">your_subscriber</span><span·class="p">,</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">subscriber</span><span·class="p"·data-group-id="8070296925-6">{</span><span·class="p"·data-group-id="80702[·...·truncated·by·diffoscope;·len:·135,·SHA:·3c79dccb6437212e9d37db7542636cd22fe4e3b4f14512ef6f49d628284dc5f8·...·]-5">)</span></code></pre><p>The·following·simple·code·illustrates·the·relationship·between·the·simplified |
| 438 | access·functions·used·in·most·of·the·examples·and·their·more·flexible | 438 | access·functions·used·in·most·of·the·examples·and·their·more·flexible |
| 439 | counterparts:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">dirty_write</span><span·class="p"·data-group-id=" | 439 | counterparts:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">dirty_write</span><span·class="p"·data-group-id="9725670738-1">(</span><span·class="n">Record</span><span·class="p"·data-group-id="9725670738-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 440 | ··</span><span·class="n">Tab</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">element</span><span·class="p"·data-group-id=" | 440 | ··</span><span·class="n">Tab</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">element</span><span·class="p"·data-group-id="9725670738-2">(</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Record</span><span·class="p"·data-group-id="9725670738-2">)</span><span·class="p">,</span><span·class="w"> |
| 441 | ··</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">dirty_write</span><span·class="p"·data-group-id=" | 441 | ··</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">dirty_write</span><span·class="p"·data-group-id="9725670738-3">(</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Record</span><span·class="p"·data-group-id="9725670738-3">)</span><span·class="p">.</span><span·class="w"> |
| 442 | </span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">dirty_delete</span><span·class="p"·data-group-id=" | 442 | </span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">dirty_delete</span><span·class="p"·data-group-id="9725670738-4">(</span><span·class="p"·data-group-id="9725670738-5">{</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Key</span><span·class="p"·data-group-id="9725670738-5">}</span><span·class="p"·data-group-i[·...·truncated·by·diffoscope;·len:·13,·SHA:·f7c286f2e3564f5cfd82ec94ddebb7bb018d1fb8dca7f68dadf4f3ad5aac69ba·...·]-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 443 | ··</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">dirty_delete</span><span·class="p"·data-group-id=" | 443 | ··</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">dirty_delete</span><span·class="p"·data-group-id="9725670738-6">(</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Key</span><span·class="p"·data-group-id="9725670738-6">)</span><span·class="p">.</span><span·class="w"> |
| 444 | </span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">dirty_delete_object</span><span·class="p"·data-group-id=" | 444 | </span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">dirty_delete_object</span><span·class="p"·data-group-id="9725670738-7">(</span><span·class="n">Record</span><span·class="p"·data-group-id="9725670738-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 445 | ··</span><span·class="n">Tab</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">element</span><span·class="p"·data-group-id=" | 445 | ··</span><span·class="n">Tab</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">element</span><span·class="p"·data-group-id="9725670738-8">(</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Record</span><span·class="p"·data-group-id="9725670738-8">)</span><span·class="p">,</span><span·class="w"> |
| 446 | ··</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">dirty_delete_object</span><span·class="p"·data-group-id=" | 446 | ··</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">dirty_delete_object</span><span·class="p"·data-group-id="9725670738-9">(</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Record</span><span·class="p"·data-group-id="9725670738-9">)</span><span·class="w"> |
| 447 | </span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">dirty_update_counter</span><span·class="p"·data-group-id=" | 447 | </span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">dirty_update_counter</span><span·class="p"·data-group-id="9725670738-10">(</span><span·class="p"·data-group-id="9725670738-11">{</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Key</span><span·class="p"·data-group-id="9725670738-11">}</span><span·class="p">,</span><[·...·truncated·by·diffoscope;·len:·91,·SHA:·b2e861f48cf824654a8b2ad041832172cc7db48c67c7ac1a67ed383c37156fbd·...·]-10">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 448 | ··</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">dirty_update_counter</span><span·class="p"·data-group-id=" | 448 | ··</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">dirty_update_counter</span><span·class="p"·data-group-id="9725670738-12">(</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Key</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Incr</span><span·class="p"·data-group-id="9725670738-12">)</span><span·class="p">.</span><span·class="w"> |
| 449 | </span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">dirty_read</span><span·class="p"·data-group-id=" | 449 | </span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">dirty_read</span><span·class="p"·data-group-id="9725670738-13">(</span><span·class="p"·data-group-id="9725670738-14">{</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Key</span><span·class="p"·data-group-id="9725670738-14">}</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·16,·SHA:·69bb82ecb83131b9c19ca9012c0deb49936665e92dddfedfd4d3847f4dddb3b9·...·]-13">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 450 | ··</span><span·class="n">Tab</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">element</span><span·class="p"·data-group-id=" | 450 | ··</span><span·class="n">Tab</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">element</span><span·class="p"·data-group-id="9725670738-15">(</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Record</span><span·class="p"·data-group-id="9725670738-15">)</span><span·class="p">,</span><span·class="w"> |
| 451 | ··</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">dirty_read</span><span·class="p"·data-group-id=" | 451 | ··</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">dirty_read</span><span·class="p"·data-group-id="9725670738-16">(</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Key</span><span·class="p"·data-group-id="9725670738-16">)</span><span·class="p">.</span><span·class="w"> |
| 452 | </span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">dirty_match_object</span><span·class="p"·data-group-id=" | 452 | </span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">dirty_match_object</span><span·class="p"·data-group-id="9725670738-17">(</span><span·class="n">Pattern</span><span·class="p"·data-group-id="9725670738-17">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 453 | ··</span><span·class="n">Tab</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">element</span><span·class="p"·data-group-id=" | 453 | ··</span><span·class="n">Tab</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">element</span><span·class="p"·data-group-id="9725670738-18">(</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pattern</span><span·class="p"·data-group-id="9725670738-18">)</span><span·class="p">,</span><span·class="w"> |
| 454 | ··</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">dirty_match_object</span><span·class="p"·data-group-id=" | 454 | ··</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">dirty_match_object</span><span·class="p"·data-group-id="9725670738-19">(</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pattern</span><span·class="p"·data-group-id="9725670738-19">)</span><span·class="p">.</span><span·class="w"> |
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| Offset 163, 17 lines modified | Offset 163, 17 lines modified | ||
| 163 | different·Erlang·nodes·in·various·ways.·The·<code·class="inline">Mnesia</code>·programmer·does·not·need·to | 163 | different·Erlang·nodes·in·various·ways.·The·<code·class="inline">Mnesia</code>·programmer·does·not·need·to |
| 164 | state·where·the·different·tables·reside,·only·the·names·of·the·different·tables | 164 | state·where·the·different·tables·reside,·only·the·names·of·the·different·tables |
| 165 | need·to·be·specified·in·the·program·code.·This·is·known·as·"location | 165 | need·to·be·specified·in·the·program·code.·This·is·known·as·"location |
| 166 | transparency"·and·is·an·important·concept.·In·particular:</p><ul><li><p>A·program·works·regardless·of·the·data·location.·It·makes·no·difference | 166 | transparency"·and·is·an·important·concept.·In·particular:</p><ul><li><p>A·program·works·regardless·of·the·data·location.·It·makes·no·difference |
| 167 | whether·the·data·resides·on·the·local·node·or·on·a·remote·node.</p><p>Notice·that·the·program·runs·slower·if·the·data·is·located·on·a·remote·node.</p></li><li><p>The·database·can·be·reconfigured,·and·tables·can·be·moved·between·nodes.·These | 167 | whether·the·data·resides·on·the·local·node·or·on·a·remote·node.</p><p>Notice·that·the·program·runs·slower·if·the·data·is·located·on·a·remote·node.</p></li><li><p>The·database·can·be·reconfigured,·and·tables·can·be·moved·between·nodes.·These |
| 168 | operations·do·not·affect·the·user·programs.</p></li></ul><p>It·has·previously·been·shown·that·each·table·has·a·number·of·system·attributes, | 168 | operations·do·not·affect·the·user·programs.</p></li></ul><p>It·has·previously·been·shown·that·each·table·has·a·number·of·system·attributes, |
| 169 | such·as·<code·class="inline">index</code>·and·<code·class="inline">type</code>.</p><p>Table·attributes·are·specified·when·the·table·is·created.·For·example,·the | 169 | such·as·<code·class="inline">index</code>·and·<code·class="inline">type</code>.</p><p>Table·attributes·are·specified·when·the·table·is·created.·For·example,·the |
| 170 | following·function·creates·a·table·with·two·RAM·replicas:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id=" | 170 | following·function·creates·a·table·with·two·RAM·replicas:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id="9738811326-1">(</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w"> |
| 171 | ····················</span><span·class="p"·data-group-id=" | 171 | ····················</span><span·class="p"·data-group-id="9738811326-2">[</span><span·class="p"·data-group-id="9738811326-3">{</span><span·class="ss">ram_copies</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9738811326-4">[</span><span·class="n">N1</span><span·class="p">,</sp[·...·truncated·by·diffoscope;·len:·146,·SHA:·37aa15c2ee73aec2aced576a03961cad7aa7ebcfb26abf5fbad31ffe8b256aa7·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 172 | ·····················</span><span·class="p"·data-group-id=" | 172 | ·····················</span><span·class="p"·data-group-id="9738811326-5">{</span><span·class="ss">attributes</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">record_info</span><span·class="p"·data-group-id="9738811326-6">(</span><span·class="ss">fields</span><span·class="p">,</span><span·clas[·...·truncated·by·diffoscope;·len:·241,·SHA:·f00991470ee98e1a3c4216f054e9ed4a64e396978c995bea473e11efa806bac3·...·]-1">)</span><span·class="p">.</span></code></pre><p>Tables·can·also·have·the·following·properties,·where·each·attribute·has·a·list |
| 173 | of·Erlang·nodes·as·its·value:</p><ul><li><p><code·class="inline">ram_copies</code>.·The·value·of·the·node·list·is·a·list·of·Erlang·nodes,·and·a·RAM | 173 | of·Erlang·nodes·as·its·value:</p><ul><li><p><code·class="inline">ram_copies</code>.·The·value·of·the·node·list·is·a·list·of·Erlang·nodes,·and·a·RAM |
| 174 | replica·of·the·table·resides·on·each·node·in·the·list.</p><p>Notice·that·no·disc·operations·are·performed·when·a·program·executes·write | 174 | replica·of·the·table·resides·on·each·node·in·the·list.</p><p>Notice·that·no·disc·operations·are·performed·when·a·program·executes·write |
| 175 | operations·to·these·replicas.·However,·if·permanent·RAM·replicas·are·required, | 175 | operations·to·these·replicas.·However,·if·permanent·RAM·replicas·are·required, |
| 176 | the·following·alternatives·are·available:</p><ol><li>The·function·<a·href="mnesia.html#dump_tables/1"><code·class="inline">mnesia:dump_tables/1</code></a>·can·be·used·to·dump·RAM·table·replicas | 176 | the·following·alternatives·are·available:</p><ol><li>The·function·<a·href="mnesia.html#dump_tables/1"><code·class="inline">mnesia:dump_tables/1</code></a>·can·be·used·to·dump·RAM·table·replicas |
| 177 | to·disc.</li><li>The·table·replicas·can·be·backed·up,·either·from·RAM,·or·from·disc·if | 177 | to·disc.</li><li>The·table·replicas·can·be·backed·up,·either·from·RAM,·or·from·disc·if |
| 178 | dumped·there·with·this·function.</li></ol></li><li><p><code·class="inline">disc_copies</code>.·The·value·of·the·attribute·is·a·list·of·Erlang·nodes,·and·a | 178 | dumped·there·with·this·function.</li></ol></li><li><p><code·class="inline">disc_copies</code>.·The·value·of·the·attribute·is·a·list·of·Erlang·nodes,·and·a |
| 179 | replica·of·the·table·resides·both·in·RAM·and·on·disc·on·each·node·in·the·list. | 179 | replica·of·the·table·resides·both·in·RAM·and·on·disc·on·each·node·in·the·list. |
| Offset 218, 60 lines modified | Offset 218, 60 lines modified | ||
| 218 | <code·class="inline">mnesia_frag</code>·can·be·used·as·a·<code·class="inline">mnesia_access</code>·callback·module.</p><p>At·each·record·access,·<code·class="inline">mnesia_frag</code>·first·computes·a·hash·value·from·the·record | 218 | <code·class="inline">mnesia_frag</code>·can·be·used·as·a·<code·class="inline">mnesia_access</code>·callback·module.</p><p>At·each·record·access,·<code·class="inline">mnesia_frag</code>·first·computes·a·hash·value·from·the·record |
| 219 | key.·Second,·the·name·of·the·table·fragment·is·determined·from·the·hash·value. | 219 | key.·Second,·the·name·of·the·table·fragment·is·determined·from·the·hash·value. |
| 220 | Finally·the·actual·table·access·is·performed·by·the·same·functions·as·for | 220 | Finally·the·actual·table·access·is·performed·by·the·same·functions·as·for |
| 221 | non-fragmented·tables.·When·the·key·is·not·known·beforehand,·all·fragments·are | 221 | non-fragmented·tables.·When·the·key·is·not·known·beforehand,·all·fragments·are |
| 222 | searched·for·matching·records.</p><p>Notice·that·in·<code·class="inline">ordered_set</code>·tables,·the·records·are·ordered·per·fragment,·and | 222 | searched·for·matching·records.</p><p>Notice·that·in·<code·class="inline">ordered_set</code>·tables,·the·records·are·ordered·per·fragment,·and |
| 223 | the·order·is·undefined·in·results·returned·by·<code·class="inline">select</code>·and·<code·class="inline">match_object</code>,·as | 223 | the·order·is·undefined·in·results·returned·by·<code·class="inline">select</code>·and·<code·class="inline">match_object</code>,·as |
| 224 | well·as·<code·class="inline">first</code>,·<code·class="inline">next</code>,·<code·class="inline">prev</code>·and·<code·class="inline">last</code>.</p><p>The·following·code·illustrates·how·a·<code·class="inline">Mnesia</code>·table·is·converted·to·be·a | 224 | well·as·<code·class="inline">first</code>,·<code·class="inline">next</code>,·<code·class="inline">prev</code>·and·<code·class="inline">last</code>.</p><p>The·following·code·illustrates·how·a·<code·class="inline">Mnesia</code>·table·is·converted·to·be·a |
| 225 | fragmented·table·and·how·more·fragments·are·added·later:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V15</span><span·class="p">.</span><span·class="mf">1.2</span><span·class="w">·</span><span·class="p"·data-group-id="1 | 225 | fragmented·table·and·how·more·fragments·are·added·later:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V15</span><span·class="p">.</span><span·class="mf">1.2</span><span·class="w">·</span><span·class="p"·data-group-id="2169280155-1">(</span><span·class="ss">press</span><span·class="w">·</span><span·class="n">Ctrl</span><span·class="o">+</span><span·class="n">G</span><span·class="w">·</span><span·class="ss">to</span><span·class="w">·</span><span·class="ss">abort</span><sp[·...·truncated·by·diffoscope;·len:·399,·SHA:·7feba4155875fa53a6a6825cb6068b7c995044e7fea3ed4270b4cac8e4252faa·...·]-1">)</span><span·class="gp·unselectable"> |
| 226 | (a@sam)1>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="1 | 226 | (a@sam)1>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="2169280155-3">(</span><span·class="p"·data-group-id="2169280155-3">)</span><span·class="p">.</span><span·class="w"> |
| 227 | </span><span·class="nf">ok</span><span·class="w"> | 227 | </span><span·class="nf">ok</span><span·class="w"> |
| 228 | </span><span·class="p"·data-group-id="1 | 228 | </span><span·class="p"·data-group-id="2169280155-4">(</span><span·class="ss">a@sam</span><span·class="p"·data-group-id="2169280155-4">)</span><span·class="mi">2</span><span·class="o">></span><span·class="w">·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">syste[·...·truncated·by·diffoscope;·len:·147,·SHA:·ac176203b88e13ef7cecda546e15a71f6fab2bd5b120402ddc857a8cad7c6281·...·]-5">)</span><span·class="p">.</span><span·class="w"> |
| 229 | </span><span·class="p"·data-group-id="1 | 229 | </span><span·class="p"·data-group-id="2169280155-6">[</span><span·class="ss">b@sam</span><span·class="p">,</span><span·class="ss">c@sam</span><span·class="p">,</span><span·class="ss">a@sam</span><span·class="p"·data-group-id="2169280155-6">]</span><span·class="gp·unselectable"> |
| 230 | (a@sam)3>·</span><span·class="n">Tab</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">dictionary</span><span·class="p">.</span><span·class="w"> | 230 | (a@sam)3>·</span><span·class="n">Tab</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">dictionary</span><span·class="p">.</span><span·class="w"> |
| 231 | </span><span·class="nf">dictionary</span><span·class="w"> | 231 | </span><span·class="nf">dictionary</span><span·class="w"> |
| 232 | </span><span·class="p"·data-group-id="1 | 232 | </span><span·class="p"·data-group-id="2169280155-7">(</span><span·class="ss">a@sam</span><span·class="p"·data-group-id="2169280155-7">)</span><span·class="mi">4</span><span·class="o">></span><span·class="w">·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">creat[·...·truncated·by·diffoscope;·len:·692,·SHA:·032b67c6764e4144b415e675beb9b2a2018e10e6e60247fb1a24401fce49c074·...·]-8">)</span><span·class="p">.</span><span·class="w"> |
| 233 | </span><span·class="p"·data-group-id="1 | 233 | </span><span·class="p"·data-group-id="2169280155-12">{</span><span·class="ss">atomic</span><span·class="p">,</span><span·class="ss">ok</span><span·class="p"·data-group-id="2169280155-12">}</span><span·class="gp·unselectable"> |
| 234 | (a@sam)5>·</span><span·class="n">Write</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="1 | 234 | (a@sam)5>·</span><span·class="n">Write</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="2169280155-13">(</span><span·class="n">Keys</span><span·class="p"·data-group-id="2169280155-13">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="2169280155-14">[</span><span·class="nc">mnesi[·...·truncated·by·diffoscope;·len:·664,·SHA:·048ba97da8461f9ce8264bec1af99e86851dc297fa0e2bca304b6f01c99bb538·...·]-14">]</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ok</span><span·class="w">·</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 235 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="o"><</span><span·class="ss">erl_eval</span><span·class="o">></span><span·class="gp·unselectable"> | 235 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="o"><</span><span·class="ss">erl_eval</span><span·class="o">></span><span·class="gp·unselectable"> |
| 236 | (a@sam)6>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">activity</span><span·class="p"·data-group-id="1 | 236 | (a@sam)6>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">activity</span><span·class="p"·data-group-id="2169280155-17">(</span><span·class="ss">sync_dirty</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Write</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2169280155-18">[</span><span·class="nc">list[·...·truncated·by·diffoscope;·len:·445,·SHA:·74408a2a84c4ea2fdd0691bf9d49831b827b7f9f9d0a0dbbd7b03ee4d84b29f8·...·]-17">)</span><span·class="p">.</span><span·class="w"> |
| 237 | </span><span·class="nf">ok</span><span·class="w"> | 237 | </span><span·class="nf">ok</span><span·class="w"> |
| 238 | </span><span·class="p"·data-group-id="1 | 238 | </span><span·class="p"·data-group-id="2169280155-20">(</span><span·class="ss">a@sam</span><span·class="p"·data-group-id="2169280155-20">)</span><span·class="mi">7</span><span·class="o">></span><span·class="w">·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">cha[·...·truncated·by·diffoscope;·len:·486,·SHA:·99088213d69b75d872dfd85c213439bf01003feaec169875f36f680007133fa0·...·]-21">)</span><span·class="p">.</span><span·class="w"> |
| 239 | </span><span·class="p"·data-group-id="1 | 239 | </span><span·class="p"·data-group-id="2169280155-24">{</span><span·class="ss">atomic</span><span·class="p">,</span><span·class="ss">ok</span><span·class="p"·data-group-id="2169280155-24">}</span><span·class="gp·unselectable"> |
| 240 | (a@sam)8>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">table_info</span><span·class="p"·data-group-id="1 | 240 | (a@sam)8>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">table_info</span><span·class="p"·data-group-id="2169280155-25">(</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">frag_properties</span><span·class="p"·data-group-id="2169280155-25">)</span><span·class="p">.</span><span·class="w"> |
| 241 | </span><span·class="p"·data-group-id="1 | 241 | </span><span·class="p"·data-group-id="2169280155-26">[</span><span·class="p"·data-group-id="2169280155-27">{</span><span·class="ss">base_table</span><span·class="p">,</span><span·class="ss">dictionary</span><span·class="p"·data-group-id="2169280155-27">}</span><span·class="p">,</span><span·class="w"> |
| 242 | ·</span><span·class="p"·data-group-id="1 | 242 | ·</span><span·class="p"·data-group-id="2169280155-28">{</span><span·class="ss">foreign_key</span><span·class="p">,</span><span·class="ss">undefined</span><span·class="p"·data-group-id="2169280155-28">}</span><span·class="p">,</span><span·class="w"> |
| 243 | ·</span><span·class="p"·data-group-id="1 | 243 | ·</span><span·class="p"·data-group-id="2169280155-29">{</span><span·class="ss">hash_module</span><span·class="p">,</span><span·class="ss">mnesia_frag_hash</span><span·class="p"·data-group-id="2169280155-29">}</span><span·class="p">,</span><span·class="w"> |
| 244 | ·</span><span·class="p"·data-group-id="1 | 244 | ·</span><span·class="p"·data-group-id="2169280155-30">{</span><span·class="ss">hash_state</span><span·class="p">,</span><span·class="p"·data-group-id="2169280155-31">{</span><span·class="ss">hash_state</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="m[·...·truncated·by·diffoscope;·len:·209,·SHA:·fd36b21f165a3aa296be21d3298cd1d873cf1bbb674eadb238f764e4f901fb9e·...·]-30">}</span><span·class="p">,</span><span·class="w"> |
| 245 | ·</span><span·class="p"·data-group-id="1 | 245 | ·</span><span·class="p"·data-group-id="2169280155-32">{</span><span·class="ss">n_fragments</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="2169280155-32">}</span><span·class="p">,</span><span·class="w"> |
| 246 | ·</span><span·class="p"·data-group-id="1 | 246 | ·</span><span·class="p"·data-group-id="2169280155-33">{</span><span·class="ss">node_pool</span><span·class="p">,</span><span·class="p"·data-group-id="2169280155-34">[</span><span·class="ss">a@sam</span><span·class="p">,</span><span·class="ss">b@sam</span><span·class="p">,</span><span·class="ss"[·...·truncated·by·diffoscope;·len:·162,·SHA:·290d0e8f20d250cbf06c53f69a9ccf80fc4cc6768b6e8e4660363b4849ac7a85·...·]-26">]</span><span·class="gp·unselectable"> |
| 247 | (a@sam)9>·</span><span·class="n">Info</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="1 | 247 | (a@sam)9>·</span><span·class="n">Info</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="2169280155-35">(</span><span·class="n">Item</span><span·class="p"·data-group-id="2169280155-35">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">table[·...·truncated·by·diffoscope;·len:·208,·SHA:·4289de18c3dab7e82d183d0542f8743330e7dcfb2e4937f6d003cefacbd07bfb·...·]-36">)</span><span·class="w">·</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 248 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="o"><</span><span·class="ss">erl_eval</span><span·class="o">></span><span·class="gp·unselectable"> | 248 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="o"><</span><span·class="ss">erl_eval</span><span·class="o">></span><span·class="gp·unselectable"> |
| 249 | (a@sam)10>·</span><span·class="n">Dist</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">activity</span><span·class="p"·data-group-id="1 | 249 | (a@sam)10>·</span><span·class="n">Dist</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">activity</span><span·class="p"·data-group-id="2169280155-37">(</span><span·class="ss">sync_dirty</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Info</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2169280155-38">[</span><span·class="ss">frag_[·...·truncated·by·diffoscope;·len:·189,·SHA:·eed9460c811d908bb78e74f537cbdb2dd621833d80ba9f3dbd3987f2bc83b402·...·]-37">)</span><span·class="p">.</span><span·class="w"> |
| 250 | </span><span·class="p"·data-group-id="1 | 250 | </span><span·class="p"·data-group-id="2169280155-39">[</span><span·class="p"·data-group-id="2169280155-40">{</span><span·class="ss">c@sam</span><span·class="p">,</span><span·class="mi">0</span><span·class="p"·data-group-id="2169280155-40">}</span><span·class="p">,</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·414,·SHA:·a778bd9f6841ba0325ad28192f819933e2910b7750d000e05be44430d081b9c3·...·]-39">]</span><span·class="gp·unselectable"> |
| 251 | (a@sam)11>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">change_table_frag</span><span·class="p"·data-group-id="1 | 251 | (a@sam)11>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">change_table_frag</span><span·class="p"·data-group-id="2169280155-43">(</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2169280155-44">{</span><span·class="ss">add_frag</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Dist</spa[·...·truncated·by·diffoscope;·len:·97,·SHA:·69ff580a5f15a6c3d041466b8d2edab4e8d857e864c36b40ef401d9ac034b89b·...·]-43">)</span><span·class="p">.</span><span·class="w"> |
| 252 | </span><span·class="p"·data-group-id="1 | 252 | </span><span·class="p"·data-group-id="2169280155-45">{</span><span·class="ss">atomic</span><span·class="p">,</span><span·class="ss">ok</span><span·class="p"·data-group-id="2169280155-45">}</span><span·class="gp·unselectable"> |
| 253 | (a@sam)12>·</span><span·class="n">Dist2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">activity</span><span·class="p"·data-group-id="1 | 253 | (a@sam)12>·</span><span·class="n">Dist2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">activity</span><span·class="p"·data-group-id="2169280155-46">(</span><span·class="ss">sync_dirty</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Info</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2169280155-47">[</span><span·class="ss">frag_[·...·truncated·by·diffoscope;·len:·189,·SHA:·3c1cd097958de5a1deb1330df170db50c37fb0a272fbe2e643b4f8750d94a19e·...·]-46">)</span><span·class="p">.</span><span·class="w"> |
| 254 | </span><span·class="p"·data-group-id="1 | 254 | </span><span·class="p"·data-group-id="2169280155-48">[</span><span·class="p"·data-group-id="2169280155-49">{</span><span·class="ss">b@sam</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="2169280155-49">}</span><span·class="p">,</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·414,·SHA:·7b3982b45444d422dfdddedaad4e0e933ff683d3134f30c6d8acd79c3991e28a·...·]-48">]</span><span·class="gp·unselectable"> |
| 255 | (a@sam)13>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">change_table_frag</span><span·class="p"·data-group-id="1 | 255 | (a@sam)13>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">change_table_frag</span><span·class="p"·data-group-id="2169280155-52">(</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2169280155-53">{</span><span·class="ss">add_frag</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Dist2</sp[·...·truncated·by·diffoscope;·len:·98,·SHA:·53f7ce365563becf73e60e67e0145b38c412c51013d5907ae758286ff040ef90·...·]-52">)</span><span·class="p">.</span><span·class="w"> |
| 256 | </span><span·class="p"·data-group-id="1 | 256 | </span><span·class="p"·data-group-id="2169280155-54">{</span><span·class="ss">atomic</span><span·class="p">,</span><span·class="ss">ok</span><span·class="p"·data-group-id="2169280155-54">}</span><span·class="gp·unselectable"> |
| 257 | (a@sam)14>·</span><span·class="n">Dist3</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">activity</span><span·class="p"·data-group-id="1 | 257 | (a@sam)14>·</span><span·class="n">Dist3</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">activity</span><span·class="p"·data-group-id="2169280155-55">(</span><span·class="ss">sync_dirty</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Info</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2169280155-56">[</span><span·class="ss">frag_[·...·truncated·by·diffoscope;·len:·189,·SHA:·a4e2d28f0e703713f62c3782f09c2dad4c613567ff861a5a9eff34dbadcd4655·...·]-55">)</span><span·class="p">.</span><span·class="w"> |
| 258 | </span><span·class="p"·data-group-id="1 | 258 | </span><span·class="p"·data-group-id="2169280155-57">[</span><span·class="p"·data-group-id="2169280155-58">{</span><span·class="ss">a@sam</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="2169280155-58">}</span><span·class="p">,</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·414,·SHA:·00c8acc13ca2fd7af0ef7329fccb2f3752e9b02b82193781642bb7700cc887a4·...·]-57">]</span><span·class="gp·unselectable"> |
| 259 | (a@sam)15>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">change_table_frag</span><span·class="p"·data-group-id="1 | 259 | (a@sam)15>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">change_table_frag</span><span·class="p"·data-group-id="2169280155-61">(</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2169280155-62">{</span><span·class="ss">add_frag</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Dist3</sp[·...·truncated·by·diffoscope;·len:·98,·SHA:·3b6bbc3ab2eacf9d756a5a95e4b42bd2f3c891adb2124e40e5d18b33d6541962·...·]-61">)</span><span·class="p">.</span><span·class="w"> |
| 260 | </span><span·class="p"·data-group-id="1 | 260 | </span><span·class="p"·data-group-id="2169280155-63">{</span><span·class="ss">atomic</span><span·class="p">,</span><span·class="ss">ok</span><span·class="p"·data-group-id="2169280155-63">}</span><span·class="gp·unselectable"> |
| 261 | (a@sam)16>·</span><span·class="n">Read</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="1 | 261 | (a@sam)16>·</span><span·class="n">Read</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="2169280155-64">(</span><span·class="n">Key</span><span·class="p"·data-group-id="2169280155-64">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">read</[·...·truncated·by·diffoscope;·len:·308,·SHA:·5caf96cd8afe63518a79dbb2066e137b1b3979c9bdb4d7f7dcf2f578793b335a·...·]-65">)</span><span·class="w">·</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 262 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="o"><</span><span·class="ss">erl_eval</span><span·class="o">></span><span·class="gp·unselectable"> | 262 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="o"><</span><span·class="ss">erl_eval</span><span·class="o">></span><span·class="gp·unselectable"> |
| 263 | (a@sam)17>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">activity</span><span·class="p"·data-group-id="1 | 263 | (a@sam)17>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">activity</span><span·class="p"·data-group-id="2169280155-67">(</span><span·class="ss">transaction</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Read</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2169280155-68">[</span><span·class="mi">12</[·...·truncated·by·diffoscope;·len:·183,·SHA:·a59776d673b5c638c5338341f362223f671627fc3d0523f0d8d4bee9e75ddffd·...·]-67">)</span><span·class="p">.</span><span·class="w"> |
| 264 | </span><span·class="p"·data-group-id="1 | 264 | </span><span·class="p"·data-group-id="2169280155-69">[</span><span·class="p"·data-group-id="2169280155-70">{</span><span·class="ss">dictionary</span><span·class="p">,</span><span·class="mi">12</span><span·class="p">,</span><span·class="o">-</span><span·class="mi">12</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·74,·SHA:·c92d6a4543cd41407e2f0f594046e064d586a156c66db775ed5a1cc2c6acd24e·...·]-69">]</span><span·class="gp·unselectable"> |
| 265 | (a@sam)18>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">activity</span><span·class="p"·data-group-id="1 | 265 | (a@sam)18>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">activity</span><span·class="p"·data-group-id="2169280155-71">(</span><span·class="ss">sync_dirty</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Info</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2169280155-72">[</span><span·class="ss">frag_[·...·truncated·by·diffoscope;·len:·189,·SHA:·a0bbd9a1195c5dd93acb5fcb03d1d648c3862dcc0e54826f843a1db46e7f0348·...·]-71">)</span><span·class="p">.</span><span·class="w"> |
| 266 | </span><span·class="p"·data-group-id="1 | 266 | </span><span·class="p"·data-group-id="2169280155-73">[</span><span·class="p"·data-group-id="2169280155-74">{</span><span·class="ss">dictionary</span><span·class="p">,</span><span·class="mi">57</span><span·class="p"·data-group-id="2169280155-74">}</span><span·class="p">,</span><span·class="w"> |
| 267 | ·</span><span·class="p"·data-group-id="1 | 267 | ·</span><span·class="p"·data-group-id="2169280155-75">{</span><span·class="ss">dictionary_frag2</span><span·class="p">,</span><span·class="mi">63</span><span·class="p"·data-group-id="2169280155-75">}</span><span·class="p">,</span><span·class="w"> |
| 268 | ·</span><span·class="p"·data-group-id="1 | 268 | ·</span><span·class="p"·data-group-id="2169280155-76">{</span><span·class="ss">dictionary_frag3</span><span·class="p">,</span><span·class="mi">62</span><span·class="p"·data-group-id="2169280155-76">}</span><span·class="p">,</span><span·class="w"> |
| 269 | ·</span><span·class="p"·data-group-id="1593675084-77">{</span><span·class="ss">dictionary_frag4</span><span·class="p">,</span><span·class="mi">74</span><span·class="p"·data-group-id="1593675084-77">}</span><span·class="p"·data-group-id="1593675084-73">]</span><span·class="w"> | ||
| 270 | </span><span·class="p"·data-group-id="1 | 269 | ·</span><span·class="p"·data-group-id="2169280155-77">{</span><span·class="ss">dictionary_frag4</span><span·class="p">,</span><span·class="mi">74</span><span·class="p"·data-group-id="2169280155-77">}</span><span·class="p"·data-group-id="2169280155-73">]</s[·...·truncated·by·diffoscope;·len:·18,·SHA:·7f5c6b1212d3eb04fd43abf1652541570d6ef0d2bed264ce2c2977e5b9aeee63·...·]"> |
| 270 | </span><span·class="p"·data-group-id="2169280155-78">(</span><span·class="ss">a@sam</span><span·class="p"·data-group-id="2169280155-78">)</span><span·class="mi">19</span><span·class="o">></span></code></pre><h3·id="fragmentation-properties"·class="section-heading"> | ||
| 271 | ··<a·href="#fragmentation-properties"·class="hover-link"> | 271 | ··<a·href="#fragmentation-properties"·class="hover-link"> |
| 272 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 272 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 273 | ··</a> | 273 | ··</a> |
| 274 | ··<span·class="text">Fragmentation·Properties</span> | 274 | ··<span·class="text">Fragmentation·Properties</span> |
| 275 | </h3> | 275 | </h3> |
| 276 | <p>The·table·property·<code·class="inline">frag_properties</code>·can·be·read·with·the·function | 276 | <p>The·table·property·<code·class="inline">frag_properties</code>·can·be·read·with·the·function |
| 277 | <a·href="mnesia.html#table_info/2"><code·class="inline">mnesia:table_info(Tab,·frag_properties)</code></a>.·The | 277 | <a·href="mnesia.html#table_info/2"><code·class="inline">mnesia:table_info(Tab,·frag_properties)</code></a>.·The |
| Offset 305, 72 lines modified | Offset 305, 72 lines modified | ||
| 305 | defaults·to·<code·class="inline">undefined</code>.·However,·if·the·foreign·key·is·set·to·something·else, | 305 | defaults·to·<code·class="inline">undefined</code>.·However,·if·the·foreign·key·is·set·to·something·else, |
| 306 | it·causes·the·default·values·of·the·other·fragmentation·properties·to·be·the | 306 | it·causes·the·default·values·of·the·other·fragmentation·properties·to·be·the |
| 307 | same·values·as·the·actual·fragmentation·properties·of·the·foreign·table.</p></li><li><p><strong><code·class="inline">{hash_module,·Atom}</code></strong>·-·Enables·definition·of·an·alternative·hashing | 307 | same·values·as·the·actual·fragmentation·properties·of·the·foreign·table.</p></li><li><p><strong><code·class="inline">{hash_module,·Atom}</code></strong>·-·Enables·definition·of·an·alternative·hashing |
| 308 | scheme.·The·module·must·implement·the·<a·href="mnesia_frag_hash.html"><code·class="inline">mnesia_frag_hash</code></a>·callback·behavior. | 308 | scheme.·The·module·must·implement·the·<a·href="mnesia_frag_hash.html"><code·class="inline">mnesia_frag_hash</code></a>·callback·behavior. |
| 309 | This·property·can·explicitly·be·set·at·table·creation.·Default·is | 309 | This·property·can·explicitly·be·set·at·table·creation.·Default·is |
| 310 | <code·class="inline">mnesia_frag_hash</code>.</p></li><li><p><strong><code·class="inline">{hash_state,·Term}</code></strong>·-·Enables·a·table-specific·parameterization·of·a | 310 | <code·class="inline">mnesia_frag_hash</code>.</p></li><li><p><strong><code·class="inline">{hash_state,·Term}</code></strong>·-·Enables·a·table-specific·parameterization·of·a |
| 311 | generic·hash·module.·This·property·can·explicitly·be·set·at·table·creation. | 311 | generic·hash·module.·This·property·can·explicitly·be·set·at·table·creation. |
| 312 | Default·is·<code·class="inline">undefined</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V15</span><span·class="p">.</span><span·class="mf">1.2</span><span·class="w">·</span><span·class="p"·data-group-id=" | 312 | Default·is·<code·class="inline">undefined</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V15</span><span·class="p">.</span><span·class="mf">1.2</span><span·class="w">·</span><span·class="p"·data-group-id="1579217815-1">(</span><span·class="ss">press</span><span·class="w">·</span><span·class="n">Ctrl</span><span·class="o">+</span><span·class="n">G</span><span·class="w">·</span><span·class="ss">to</span><span·class="w">·</span><span·class="ss">abort</span><sp[·...·truncated·by·diffoscope;·len:·399,·SHA:·1babcf18a1cf441f088e94fb12cb4d0a9cf572290096f8b3c0997c38630723d9·...·]-1">)</span><span·class="gp·unselectable"> |
| 313 | (a@sam)1>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 313 | (a@sam)1>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="1579217815-3">(</span><span·class="p"·data-group-id="1579217815-3">)</span><span·class="p">.</span><span·class="w"> |
| 314 | </span><span·class="nf">ok</span><span·class="w"> | 314 | </span><span·class="nf">ok</span><span·class="w"> |
| 315 | </span><span·class="p"·data-group-id=" | 315 | </span><span·class="p"·data-group-id="1579217815-4">(</span><span·class="ss">a@sam</span><span·class="p"·data-group-id="1579217815-4">)</span><span·class="mi">2</span><span·class="o">></span><span·class="w">·</span><span·class="n">PrimProps</span><span·class="w">·</span><span·class="o">=</s[·...·truncated·by·diffoscope;·len:·811,·SHA:·034bc8bd3ec6608eeb8fa17281d43600d7730e9fd4d289d1d0c2270777eaa331·...·]-5">]</span><span·class="p">.</span><span·class="w"> |
| 316 | </span><span·class="p"·data-group-id=" | 316 | </span><span·class="p"·data-group-id="1579217815-10">[</span><span·class="p"·data-group-id="1579217815-11">{</span><span·class="ss">n_fragments</span><span·class="p">,</span><span·class="mi">7</span><span·class="p"·data-group-id="1579217815-11">}</span><span·class="p">,</span><span·class="p"·d[·...·truncated·by·diffoscope;·len:·326,·SHA:·c837cb106d36d9bbc0b18973ed485ba9bf4e58b3c7bf889b979b4b586df77041·...·]-10">]</span><span·class="gp·unselectable"> |
| 317 | (a@sam)3>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id=" | 317 | (a@sam)3>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id="1579217815-14">(</span><span·class="ss">prim_dict</span><span·class="p">,</span><span·class="w"> |
| 318 | ······························</span><span·class="p"·data-group-id=" | 318 | ······························</span><span·class="p"·data-group-id="1579217815-15">[</span><span·class="p"·data-group-id="1579217815-16">{</span><span·class="ss">frag_properties</span><span·class="p">,</span><span·class="w">·</span><span·class="n">PrimProps</span><span·class="p"·data-group-id="1579217815-16">}</span><span·class="p">,</span><span·class="w"> |
| 319 | ·······························</span><span·class="p"·data-group-id=" | 319 | ·······························</span><span·class="p"·data-group-id="1579217815-17">{</span><span·class="ss">attributes</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1579217815-18">[</span><span·class="ss">prim_key</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">[·...·truncated·by·diffoscope;·len:·218,·SHA:·ec8cd38c758b60e2f54e87e46f8b1551388cace860de12709160a53e72a4259c·...·]-14">)</span><span·class="p">.</span><span·class="w"> |
| 320 | </span><span·class="p"·data-group-id=" | 320 | </span><span·class="p"·data-group-id="1579217815-19">{</span><span·class="ss">atomic</span><span·class="p">,</span><span·class="ss">ok</span><span·class="p"·data-group-id="1579217815-19">}</span><span·class="gp·unselectable"> |
| 321 | (a@sam)4>·</span><span·class="n">SecProps</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="8110494469-20">[</span><span·class="p"·data-group-id="8110494469-21">{</span><span·class="ss">foreign_key</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8110494469-22">{</span><span·class="ss">prim_dict</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">sec_val</span><span·class="p"·data-group-id="8110494469-22">}</span><span·class="p"·data-group-id="8110494469-21">}</span><span·class="p"·data-group-id="8110494469-20">]</span><span·class="p">.</span><span·class="w"> | ||
| 322 | </span><span·class=" | 321 | (a@sam)4>·</span><span·class="n">SecProps</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="1579217815-20">[</span><span·class="p"·data-group-id="1579217815-21">{</span><span·class="ss">foreign_[·...·truncated·by·diffoscope;·len:·424,·SHA:·6950b07ac51bd55e7b65411181f4f24751b2709167ba95c15fd247287dc1aca5·...·]"> |
| 322 | </span><span·class="p"·data-group-id="1579217815-23">[</span><span·class="p"·data-group-id="1579217815-24">{</span><span·class="ss">foreign_key</span><span·class="p">,</span><span·class="p"·data-group-id="1579217815-25">{</span><span·class="ss">prim_dict</span><span·class="p">,</span><span·class="ss">sec_val</span><span·class="p"·data-group-id="1579217815-25">}</span><span·class="p"·data-group-id="1579217815-24">}</span><span·class="p"·data-group-id="1579217815-23">]</span><span·class="gp·unselectable"> | ||
| 323 | (a@sam)5>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id=" | 323 | (a@sam)5>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id="1579217815-26">(</span><span·class="ss">sec_dict</span><span·class="p">,</span><span·class="w"> |
| 324 | ······························</span><span·class="p"·data-group-id=" | 324 | ······························</span><span·class="p"·data-group-id="1579217815-27">[</span><span·class="p"·data-group-id="1579217815-28">{</span><span·class="ss">frag_properties</span><span·class="p">,</span><span·class="w">·</span><span·class="n">SecProps</span><span·class="p"·data-group-id="1579217815-28">}</span><span·class="p">,</span><span·class="w"> |
| 325 | ·······························</span><span·class="p"·data-group-id=" | 325 | ·······························</span><span·class="p"·data-group-id="1579217815-29">{</span><span·class="ss">attributes</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1579217815-30">[</span><span·class="ss">sec_key</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">s[·...·truncated·by·diffoscope;·len:·216,·SHA:·97abb9888ec9b897222d3bdca961fc885143ed176ff06c6a4abd9887a6085d9a·...·]-26">)</span><span·class="p">.</span><span·class="w"> |
| 326 | </span><span·class="p"·data-group-id=" | 326 | </span><span·class="p"·data-group-id="1579217815-31">{</span><span·class="ss">atomic</span><span·class="p">,</span><span·class="ss">ok</span><span·class="p"·data-group-id="1579217815-31">}</span><span·class="gp·unselectable"> |
| 327 | (a@sam)6>·</span><span·class="n">Write</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 327 | (a@sam)6>·</span><span·class="n">Write</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="1579217815-32">(</span><span·class="n">Rec</span><span·class="p"·data-group-id="1579217815-32">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">write<[·...·truncated·by·diffoscope;·len:·127,·SHA:·f5a7a17dff8d407958c6ab1cb2a1daebbb4c5641e15beff7dce70dedee5c9b7a·...·]-33">)</span><span·class="w">·</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 328 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="o"><</span><span·class="ss">erl_eval</span><span·class="o">></span><span·class="gp·unselectable"> | 328 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="o"><</span><span·class="ss">erl_eval</span><span·class="o">></span><span·class="gp·unselectable"> |
| 329 | (a@sam)7>·</span><span·class="n">PrimKey</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">11</span><span·class="p">.</span><span·class="w"> | 329 | (a@sam)7>·</span><span·class="n">PrimKey</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">11</span><span·class="p">.</span><span·class="w"> |
| 330 | </span><span·class="mi">11</span><span·class="gp·unselectable"> | 330 | </span><span·class="mi">11</span><span·class="gp·unselectable"> |
| 331 | (a@sam)8>·</span><span·class="n">SecKey</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">42</span><span·class="p">.</span><span·class="w"> | 331 | (a@sam)8>·</span><span·class="n">SecKey</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">42</span><span·class="p">.</span><span·class="w"> |
| 332 | </span><span·class="mi">42</span><span·class="gp·unselectable"> | 332 | </span><span·class="mi">42</span><span·class="gp·unselectable"> |
| 333 | (a@sam)9>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">activity</span><span·class="p"·data-group-id=" | 333 | (a@sam)9>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">activity</span><span·class="p"·data-group-id="1579217815-34">(</span><span·class="ss">sync_dirty</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Write</span><span·class="p">,</span><span·class="w"> |
| 334 | ··························</span><span·class="p"·data-group-id=" | 334 | ··························</span><span·class="p"·data-group-id="1579217815-35">[</span><span·class="p"·data-group-id="1579217815-36">{</span><span·class="ss">prim_dict</span><span·class="p">,</span><span·class="w">·</span><span·class="n">PrimKey</span><span·class="p">,</span><span·class="w">·</span><span·class="o">-</s[·...·truncated·by·diffoscope;·len:·262,·SHA:·368e4e48067673d6e5d16668e4b885ae7950d1c258b46073016cb8fb97787b6e·...·]-34">)</span><span·class="p">.</span><span·class="w"> |
| 335 | </span><span·class="nf">ok</span><span·class="w"> | 335 | </span><span·class="nf">ok</span><span·class="w"> |
| 336 | </span><span·class="p"·data-group-id=" | 336 | </span><span·class="p"·data-group-id="1579217815-37">(</span><span·class="ss">a@sam</span><span·class="p"·data-group-id="1579217815-37">)</span><span·class="mi">10</span><span·class="o">></span><span·class="w">·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">ac[·...·truncated·by·diffoscope;·len:·54,·SHA:·6b44c1fc8684214cb13856905c28cd79dcbce723e848656e91516ac0e2bdde9a·...·]-38">(</span><span·class="ss">sync_dirty</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Write</span><span·class="p">,</span><span·class="w"> |
| 337 | ···························</span><span·class="p"·data-group-id=" | 337 | ···························</span><span·class="p"·data-group-id="1579217815-39">[</span><span·class="p"·data-group-id="1579217815-40">{</span><span·class="ss">sec_dict</span><span·class="p">,</span><span·class="w">·</span><span·class="n">SecKey</span><span·class="p">,</span><span·class="w">·</span><span·class="n">PrimKe[·...·truncated·by·diffoscope;·len:·240,·SHA:·587c5fe63fb35fae4dbe4931e153fd2c9271ee348ff9b4cbaf79d0f5b8b81afd·...·]-38">)</span><span·class="p">.</span><span·class="w"> |
| 338 | </span><span·class="nf">ok</span><span·class="w"> | 338 | </span><span·class="nf">ok</span><span·class="w"> |
| 339 | </span><span·class="p"·data-group-id="8110494469-41">(</span><span·class="ss">a@sam</span><span·class="p"·data-group-id="8110494469-41">)</span><span·class="mi">11</span><span·class="o">></span><span·class="w">·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">change_table_frag</span><span·class="p"·data-group-id="8110494469-42">(</span><span·class="ss">prim_dict</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8110494469-43">{</span><span·class="ss">add_frag</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8110494469-44">[</span><span·class="nf">node</span><span·class="p"·data-group-id="8110494469-45">(</span><span·class="p"·data-group-id="8110494469-45">)</span><span·class="p"·data-group-id="8110494469-44">]</span><span·class="p"·data-group-id="8110494469-43">}</span><span·class="p"·data-group-id="8110494469-42">)</span><span·class="p">.</span><span·class="w"> | ||
| 340 | </span><span·class="p"·data-group-id=" | 339 | </span><span·class="p"·data-group-id="1579217815-41">(</span><span·class="ss">a@sam</span><span·class="p"·data-group-id="1579217815-41">)</span><span·class="mi">11</span><span·class="o">></span><span·class="w">·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">ch[·...·truncated·by·diffoscope;·len:·681,·SHA:·57dc3c269f0a841c09827a70fa104039cc36cf4f4a567fd943dade2af02f67af·...·]"> |
| 340 | </span><span·class="p"·data-group-id="1579217815-46">{</span><span·class="ss">atomic</span><span·class="p">,</span><span·class="ss">ok</span><span·class="p"·data-group-id="1579217815-46">}</span><span·class="gp·unselectable"> | ||
| 341 | (a@sam)12>·</span><span·class="n">SecRead</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 341 | (a@sam)12>·</span><span·class="n">SecRead</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="1579217815-47">(</span><span·class="n">PrimKey</span><span·class="p">,</span><span·class="w">·</span><span·class="n">SecKey</span><span·class="p"·data-group-id="1579217815-47">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 342 | ···············</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">read</span><span·class="p"·data-group-id=" | 342 | ···············</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">read</span><span·class="p"·data-group-id="1579217815-48">(</span><span·class="p"·data-group-id="1579217815-49">{</span><span·class="ss">sec_dict</span><span·class="p">,</span><span·class="w">·</span><span·class="n">PrimKey</span><span·class="p"·data-group-id="1579217815-49">}</span><span·class="p"[·...·truncated·by·diffoscope;·len:·179,·SHA:·b894c1f748728831726e84330f7f6472b21ce43946aaa8f64ec6e33ac1de206f·...·]-48">)</span><span·class="w">·</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 343 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="o"><</span><span·class="ss">erl_eval</span><span·class="o">></span><span·class="gp·unselectable"> | 343 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="o"><</span><span·class="ss">erl_eval</span><span·class="o">></span><span·class="gp·unselectable"> |
| 344 | (a@sam)13>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">activity</span><span·class="p"·data-group-id=" | 344 | (a@sam)13>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">activity</span><span·class="p"·data-group-id="1579217815-50">(</span><span·class="ss">transaction</span><span·class="p">,</span><span·class="w">·</span><span·class="n">SecRead</span><span·class="p">,</span><span·class="w"> |
| 345 | ···························</span><span·class="p"·data-group-id=" | 345 | ···························</span><span·class="p"·data-group-id="1579217815-51">[</span><span·class="n">PrimKey</span><span·class="p">,</span><span·class="w">·</span><span·class="n">SecKey</span><span·class="p"·data-group-id="1579217815-51">]</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">mnesia_[·...·truncated·by·diffoscope;·len:·52,·SHA:·5e927d52cebc0921c5417c71df5e206eba566cec6a927fe385a20d5f2acdbe7e·...·]-50">)</span><span·class="p">.</span><span·class="w"> |
| 346 | </span><span·class="p"·data-group-id=" | 346 | </span><span·class="p"·data-group-id="1579217815-52">[</span><span·class="p"·data-group-id="1579217815-53">{</span><span·class="ss">sec_dict</span><span·class="p">,</span><span·class="mi">42</span><span·class="p">,</span><span·class="mi">11</span><span·class="p"·data-group-id="1579217815-53">}[·...·truncated·by·diffoscope;·len:·48,·SHA:·bd11b2cba275afe9d4c3f912b05f8a3ff49bea39628b415a1daeb20e935a188d·...·]-52">]</span><span·class="gp·unselectable"> |
| 347 | (a@sam)14>·</span><span·class="n">Info</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 347 | (a@sam)14>·</span><span·class="n">Info</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="1579217815-54">(</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Item</span><span·class="p"·data-group-id="1579217815-54">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><s[·...·truncated·by·diffoscope;·len:·282,·SHA:·afc418353137bb86f67842c1d7147a82fa16ee9dcc6f4f8c08d7c76f8f205df3·...·]-55">)</span><span·class="w">·</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 348 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="o"><</span><span·class="ss">erl_eval</span><span·class="o">></span><span·class="gp·unselectable"> | 348 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="o"><</span><span·class="ss">erl_eval</span><span·class="o">></span><span·class="gp·unselectable"> |
| 349 | (a@sam)15>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">activity</span><span·class="p"·data-group-id=" | 349 | (a@sam)15>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">activity</span><span·class="p"·data-group-id="1579217815-56">(</span><span·class="ss">sync_dirty</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Info</span><span·class="p">,</span><span·class="w"> |
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| 229 | ··</a> | 229 | ··</a> |
| 230 | ··<span·class="text">Startup·Files</span> | 230 | ··<span·class="text">Startup·Files</span> |
| 231 | </h3> | 231 | </h3> |
| 232 | <p><a·href="mnesia_chap3.html#start_mnesia">Start·Mnesia</a>·states·the·following·prerequisites | 232 | <p><a·href="mnesia_chap3.html#start_mnesia">Start·Mnesia</a>·states·the·following·prerequisites |
| 233 | for·starting·<code·class="inline">Mnesia</code>:</p><ul><li>An·Erlang·session·must·be·started·and·a·<code·class="inline">Mnesia</code>·directory·must·be·specified | 233 | for·starting·<code·class="inline">Mnesia</code>:</p><ul><li>An·Erlang·session·must·be·started·and·a·<code·class="inline">Mnesia</code>·directory·must·be·specified |
| 234 | for·the·database.</li><li>A·database·schema·must·be·initiated,·using·the·function | 234 | for·the·database.</li><li>A·database·schema·must·be·initiated,·using·the·function |
| 235 | <a·href="mnesia.html#create_schema/1"><code·class="inline">mnesia:create_schema/1</code></a>.</li></ul><p>The·following·example·shows·how·these·tasks·are·performed:</p><p><em>Step·1:</em>·Start·an·Erlang·session·and·specify·a·<code·class="inline">Mnesia</code>·directory·for·the | 235 | <a·href="mnesia.html#create_schema/1"><code·class="inline">mnesia:create_schema/1</code></a>.</li></ul><p>The·following·example·shows·how·these·tasks·are·performed:</p><p><em>Step·1:</em>·Start·an·Erlang·session·and·specify·a·<code·class="inline">Mnesia</code>·directory·for·the |
| 236 | database:</p><pre><code·class="text">%·erl·-sname·klacke·-mnesia·dir·'"/ldisc/scratch/klacke"'</code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Erlang</span><span·class="o">/</span><span·class="n">OTP</span><span·class="w">·</span><span·class="mi">27</span><span·class="w">·</span><span·class="p"·data-group-id="8 | 236 | database:</p><pre><code·class="text">%·erl·-sname·klacke·-mnesia·dir·'"/ldisc/scratch/klacke"'</code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Erlang</span><span·class="o">/</span><span·class="n">OTP</span><span·class="w">·</span><span·class="mi">27</span><span·class="w">·</span><span·class="p"·data-group-id="8699949306-1">[</span><span·class="ss">erts</span><span·class="o">-</span><span·class="mf">15.1</span><span·class="p">.</span><span·class="mi">2</span><span·class="p"·data-group-id="8699949306-1">]</span><span·class="w"> |
| 237 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V15</span><span·class="p">.</span><span·class="mf">1.2</span><span·class="w">·</span><span·class="p"·data-group-id="8 | 237 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V15</span><span·class="p">.</span><span·class="mf">1.2</span><span·class="w">·</span><span·class="p"·data-group-id="8699949306-2">(</span><span·class="ss">press</span><span·class="w">·</span><span·class="n">Ctrl</span><span·class="o">+</span><span·class="n">G</span><span·class="w">·</span><span·class="ss">to</span><span·class="w">·</span><span·class="ss">abort</span><spa[·...·truncated·by·diffoscope;·len:·398,·SHA:·cd9c9ad154eff81b38b0a72b87b8dd04b2602627c1f1b3ffbc5154f189cc6d64·...·]-2">)</span><span·class="gp·unselectable"> |
| 238 | (klacke@gin)1>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_schema</span><span·class="p"·data-group-id="8 | 238 | (klacke@gin)1>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_schema</span><span·class="p"·data-group-id="8699949306-4">(</span><span·class="p"·data-group-id="8699949306-5">[</span><span·class="nf">node</span><span·class="p"·data-group-id="8699949306-6">(</span><span·class="p"·data-group-id="8699949306-6">)</span><span·class="p"·data-group-id="8699949306-5">]</[·...·truncated·by·diffoscope;·len:·46,·SHA:·97e08c437ffe49afa42968ec6f0f14f6254507b0ba65aec784582723802f81cd·...·]-4">)</span><span·class="p">.</span><span·class="w"> |
| 239 | </span><span·class="nf">ok</span><span·class="w"> | 239 | </span><span·class="nf">ok</span><span·class="w"> |
| 240 | </span><span·class="p"·data-group-id="8 | 240 | </span><span·class="p"·data-group-id="8699949306-7">(</span><span·class="ss">klacke@gin</span><span·class="p"·data-group-id="8699949306-7">)</span><span·class="mi">2</span><span·class="o">></span><span·class="w"> |
| 241 | </span><span·class="n">Ctrl</span><span·class="o">+</span><span·class="n">Z</span><span·class="w"> | 241 | </span><span·class="n">Ctrl</span><span·class="o">+</span><span·class="n">Z</span><span·class="w"> |
| 242 | </span><span·class="p"·data-group-id="8 | 242 | </span><span·class="p"·data-group-id="8699949306-8">[</span><span·class="mi">1</span><span·class="p"·data-group-id="8699949306-8">]</span><span·class="o">+</span><span·class="w">··</span><span·class="n">Stopped</span><span·class="w">·················</span><span·class="ss">erl</span></code></pre><p><em>Step·2:</em>·You·can·inspect·the·<code·class="inline">Mnesia</code>·directory·to·see·what·files·have·been |
| 243 | created:</p><pre><code·class="text">%·ls·-l·/ldisc/scratch/klacke | 243 | created:</p><pre><code·class="text">%·ls·-l·/ldisc/scratch/klacke |
| 244 | -rw-rw-r--···1·klacke···staff·······247·Aug·12·15:06·FALLBACK.BUP</code></pre><p>The·response·shows·that·the·file·<code·class="inline">FALLBACK.BUP</code>·has·been·created.·This·is·called | 244 | -rw-rw-r--···1·klacke···staff·······247·Aug·12·15:06·FALLBACK.BUP</code></pre><p>The·response·shows·that·the·file·<code·class="inline">FALLBACK.BUP</code>·has·been·created.·This·is·called |
| 245 | a·backup·file,·and·it·contains·an·initial·schema.·If·more·than·one·node·in·the | 245 | a·backup·file,·and·it·contains·an·initial·schema.·If·more·than·one·node·in·the |
| 246 | function·<a·href="mnesia.html#create_schema/1"><code·class="inline">mnesia:create_schema/1</code></a>·had·been·specified,·identical·backup·files | 246 | function·<a·href="mnesia.html#create_schema/1"><code·class="inline">mnesia:create_schema/1</code></a>·had·been·specified,·identical·backup·files |
| 247 | would·have·been·created·on·all·nodes.</p><p><em>Step·3:</em>·Start·<code·class="inline">Mnesia</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">(klacke@gin)3>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 247 | would·have·been·created·on·all·nodes.</p><p><em>Step·3:</em>·Start·<code·class="inline">Mnesia</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">(klacke@gin)3>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="5181051038-1">(</span><span·class="p"·data-group-id="5181051038-1">)</span><span·class="p">.</span><span·class="w"> |
| 248 | </span><span·class="ss">ok</span></code></pre><p><em>Step·4:</em>·You·can·see·the·following·listing·in·the·<code·class="inline">Mnesia</code>·directory:</p><pre><code·class="text">-rw-rw-r--···1·klacke···staff·········86·May·26·19:03·LATEST.LOG | 248 | </span><span·class="ss">ok</span></code></pre><p><em>Step·4:</em>·You·can·see·the·following·listing·in·the·<code·class="inline">Mnesia</code>·directory:</p><pre><code·class="text">-rw-rw-r--···1·klacke···staff·········86·May·26·19:03·LATEST.LOG |
| 249 | -rw-rw-r--···1·klacke···staff······34507·May·26·19:03·schema.DAT</code></pre><p>The·schema·in·the·backup·file·<code·class="inline">FALLBACK.BUP</code>·has·been·used·to·generate·the·file | 249 | -rw-rw-r--···1·klacke···staff······34507·May·26·19:03·schema.DAT</code></pre><p>The·schema·in·the·backup·file·<code·class="inline">FALLBACK.BUP</code>·has·been·used·to·generate·the·file |
| 250 | <code·class="inline">schema.DAT</code>.·Since·there·are·no·other·disc·resident·tables·than·the·schema,·no | 250 | <code·class="inline">schema.DAT</code>.·Since·there·are·no·other·disc·resident·tables·than·the·schema,·no |
| 251 | other·data·files·were·created.·The·file·<code·class="inline">FALLBACK.BUP</code>·was·removed·after·the | 251 | other·data·files·were·created.·The·file·<code·class="inline">FALLBACK.BUP</code>·was·removed·after·the |
| 252 | successful·"restoration".·You·also·see·some·files·that·are·for·internal·use·by | 252 | successful·"restoration".·You·also·see·some·files·that·are·for·internal·use·by |
| 253 | <code·class="inline">Mnesia</code>.</p><p><em>Step·5:</em>·Create·a·table:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">(klacke@gin)4>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id="0376718322-1">(</span><span·class="ss">foo</span><span·class="p">,</span><span·class="p"·data-group-id="0376718322-2">[</span><span·class="p"·data-group-id="0376718322-3">{</span><span·class="ss">disc_copies</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0376718322-4">[</span><span·class="nf">node</span><span·class="p"·data-group-id="0376718322-5">(</span><span·class="p"·data-group-id="0376718322-5">)</span><span·class="p"·data-group-id="0376718322-4">]</span><span·class="p"·data-group-id="0376718322-3">}</span><span·class="p"·data-group-id="0376718322-2">]</span><span·class="p"·data-group-id="0376718322-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 254 | < | 253 | <code·class="inline">Mnesia</code>.</p><p><em>Step·5:</em>·Create·a·table:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">(klacke@gin)4>·</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">creat[·...·truncated·by·diffoscope;·len:·746,·SHA:·3e4ad5b113db200cc42183a004b466802794d4137f1acf6cc8560ec3a416f256·...·] |
| 254 | </span><span·class="p"·data-group-id="1753841789-6">{</span><span·class="ss">atomic</span><span·class="p">,</span><span·class="ss">ok</span><span·class="p"·data-group-id="1753841789-6">}</span></code></pre><p><em>Step·6:</em>·You·can·see·the·following·listing·in·the·<code·class="inline">Mnesia</code>·directory:</p><pre><code·class="text">%·ls·-l·/ldisc/scratch/klacke | ||
| 255 | -rw-rw-r--·1·klacke·staff····86·May·26·19:07·LATEST.LOG | 255 | -rw-rw-r--·1·klacke·staff····86·May·26·19:07·LATEST.LOG |
| 256 | -rw-rw-r--·1·klacke·staff····94·May·26·19:07·foo.DCD | 256 | -rw-rw-r--·1·klacke·staff····94·May·26·19:07·foo.DCD |
| 257 | -rw-rw-r--·1·klacke·staff··6679·May·26·19:07·schema.DAT</code></pre><p>The·file·<code·class="inline">foo.DCD</code>·has·been·created.·This·file·will·eventually·store·all·data | 257 | -rw-rw-r--·1·klacke·staff··6679·May·26·19:07·schema.DAT</code></pre><p>The·file·<code·class="inline">foo.DCD</code>·has·been·created.·This·file·will·eventually·store·all·data |
| 258 | that·is·written·into·the·<code·class="inline">foo</code>·table.</p><h3·id="log-file"·class="section-heading"> | 258 | that·is·written·into·the·<code·class="inline">foo</code>·table.</p><h3·id="log-file"·class="section-heading"> |
| 259 | ··<a·href="#log-file"·class="hover-link"> | 259 | ··<a·href="#log-file"·class="hover-link"> |
| 260 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 260 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 261 | ··</a> | 261 | ··</a> |
| Offset 292, 19 lines modified | Offset 292, 19 lines modified | ||
| 292 | and·it·is·efficient·to·insert·and·search·for·records·in·these·files·with·a | 292 | and·it·is·efficient·to·insert·and·search·for·records·in·these·files·with·a |
| 293 | specific·key.·The·<code·class="inline">.DAT</code>·files·are·used·for·the·schema·and·for | 293 | specific·key.·The·<code·class="inline">.DAT</code>·files·are·used·for·the·schema·and·for |
| 294 | <code·class="inline">disc_only_copies</code>·tables.·The·<code·class="inline">Mnesia</code>·data·files·are·currently·implemented·in | 294 | <code·class="inline">disc_only_copies</code>·tables.·The·<code·class="inline">Mnesia</code>·data·files·are·currently·implemented·in |
| 295 | the·standard·library·module·<a·href="../../../../lib/stdlib-6.2.1/doc/html/dets.html"><code·class="inline">dets</code></a>·in·<code·class="inline">STDLIB</code>.</p><p>All·operations·that·can·be·performed·on·<code·class="inline">dets</code>·files·can·also·be·performed·on | 295 | the·standard·library·module·<a·href="../../../../lib/stdlib-6.2.1/doc/html/dets.html"><code·class="inline">dets</code></a>·in·<code·class="inline">STDLIB</code>.</p><p>All·operations·that·can·be·performed·on·<code·class="inline">dets</code>·files·can·also·be·performed·on |
| 296 | the·<code·class="inline">Mnesia</code>·data·files.·For·example,·<code·class="inline">dets</code>·contains·the·function | 296 | the·<code·class="inline">Mnesia</code>·data·files.·For·example,·<code·class="inline">dets</code>·contains·the·function |
| 297 | <a·href="../../../../lib/stdlib-6.2.1/doc/html/dets.html#traverse/2"><code·class="inline">dets:traverse/2</code></a>,·which·can·be·used·to·view·the·contents·of·a·<code·class="inline">Mnesia</code>·<code·class="inline">DAT</code> | 297 | <a·href="../../../../lib/stdlib-6.2.1/doc/html/dets.html#traverse/2"><code·class="inline">dets:traverse/2</code></a>,·which·can·be·used·to·view·the·contents·of·a·<code·class="inline">Mnesia</code>·<code·class="inline">DAT</code> |
| 298 | file.·However,·this·can·only·be·done·when·<code·class="inline">Mnesia</code>·is·not·running.·So,·to·view | 298 | file.·However,·this·can·only·be·done·when·<code·class="inline">Mnesia</code>·is·not·running.·So,·to·view |
| 299 | the·schema·file,·do·as·follows;</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 299 | the·schema·file,·do·as·follows;</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="2427055122-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">N</span><span·class="p"·data-group-id="2427055122-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class[·...·truncated·by·diffoscope;·len:·688,·SHA:·a3bac3e8199efb4c2caa505d96705469a3fabe984f5d153744eabb1748506928·...·]-5">}</span><span·class="p">,</span><span·class="w"> |
| 300 | </span><span·class="p"·data-group-id=" | 300 | </span><span·class="p"·data-group-id="2427055122-6">{</span><span·class="ss">keypos</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">2</span><span·class="p"·data-group-id="2427055122-6">}</span><span·class="p"·data-group-id="2427055122-3">]</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·16,·SHA:·568645d492937baf8cc6a84ed35e2e1bdfb05271da214a6687209b33fe9e7a9e·...·]-2">)</span><span·class="p">,</span><span·class="w"> |
| 301 | </span><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 301 | </span><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="2427055122-7">(</span><span·class="n">X</span><span·class="p"·data-group-id="2427055122-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><[·...·truncated·by·diffoscope;·len:·381,·SHA:·eb51b0828114bdd2bd404bd61de2e8a6e99bd0aa7a60a369a8633d139955f3b1·...·]-8">)</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">continue</span><span·class="w">·</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 302 | </span><span·class="nc">dets</span><span·class="p">:</span><span·class="nf">traverse</span><span·class="p"·data-group-id=" | 302 | </span><span·class="nc">dets</span><span·class="p">:</span><span·class="nf">traverse</span><span·class="p"·data-group-id="2427055122-10">(</span><span·class="n">N</span><span·class="p">,</span><span·class="w">·</span><span·class="n">F</span><span·class="p"·data-group-id="2427055122-10">)</span><span·class="p">,</span><span·class="w"> |
| 303 | </span><span·class="nc">dets</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id=" | 303 | </span><span·class="nc">dets</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id="2427055122-11">(</span><span·class="n">N</span><span·class="p"·data-group-id="2427055122-11">)</span><span·class="p">.</span></code></pre><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>The·<code·class="inline">DAT</code>·files·must·always·be·opened·with·option·<code·class="inline">{repair,·false}</code>.·This |
| 304 | ensures·that·these·files·are·not·automatically·repaired.·Without·this·option, | 304 | ensures·that·these·files·are·not·automatically·repaired.·Without·this·option, |
| 305 | the·database·can·become·inconsistent,·because·<code·class="inline">Mnesia</code>·can·believe·that·the | 305 | the·database·can·become·inconsistent,·because·<code·class="inline">Mnesia</code>·can·believe·that·the |
| 306 | files·were·properly·closed.·For·information·about·configuration·parameter | 306 | files·were·properly·closed.·For·information·about·configuration·parameter |
| 307 | <code·class="inline">auto_repair</code>,·see·the·Reference·Manual.</p></section><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>It·is·recommended·that·the·data·files·are·not·tampered·with·while·<code·class="inline">Mnesia</code>·is | 307 | <code·class="inline">auto_repair</code>,·see·the·Reference·Manual.</p></section><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>It·is·recommended·that·the·data·files·are·not·tampered·with·while·<code·class="inline">Mnesia</code>·is |
| 308 | running.·While·not·prohibited,·the·behavior·of·<code·class="inline">Mnesia</code>·is·unpredictable.</p></section><p>The·<code·class="inline">disc_copies</code>·tables·are·stored·on·disk·with·<code·class="inline">.DCL</code>·and·<code·class="inline">.DCD</code>·files,·which | 308 | running.·While·not·prohibited,·the·behavior·of·<code·class="inline">Mnesia</code>·is·unpredictable.</p></section><p>The·<code·class="inline">disc_copies</code>·tables·are·stored·on·disk·with·<code·class="inline">.DCL</code>·and·<code·class="inline">.DCD</code>·files,·which |
| 309 | are·standard·<code·class="inline">disk_log</code>·files.</p><h2·id="loading-tables-at-startup"·class="section-heading"> | 309 | are·standard·<code·class="inline">disk_log</code>·files.</p><h2·id="loading-tables-at-startup"·class="section-heading"> |
| 310 | ··<a·href="#loading-tables-at-startup"·class="hover-link"> | 310 | ··<a·href="#loading-tables-at-startup"·class="hover-link"> |
| Offset 530, 46 lines modified | Offset 530, 46 lines modified | ||
| 530 | of·what·<code·class="inline">record_name</code>·is·set·to.</li></ul><p>The·backup·data·is·divided·into·two·sections.·The·first·section·contains | 530 | of·what·<code·class="inline">record_name</code>·is·set·to.</li></ul><p>The·backup·data·is·divided·into·two·sections.·The·first·section·contains |
| 531 | information·related·to·the·schema.·All·schema-related·items·are·tuples·where·the | 531 | information·related·to·the·schema.·All·schema-related·items·are·tuples·where·the |
| 532 | first·field·equals·the·atom·schema.·The·second·section·is·the·record·section. | 532 | first·field·equals·the·atom·schema.·The·second·section·is·the·record·section. |
| 533 | Schema·records·cannot·be·mixed·with·other·records·and·all·schema·records·must·be | 533 | Schema·records·cannot·be·mixed·with·other·records·and·all·schema·records·must·be |
| 534 | located·first·in·the·backup.</p><p>The·schema·itself·is·a·table·and·is·possibly·included·in·the·backup.·Each·node | 534 | located·first·in·the·backup.</p><p>The·schema·itself·is·a·table·and·is·possibly·included·in·the·backup.·Each·node |
| 535 | where·the·schema·table·resides·is·regarded·as·a·<code·class="inline">db_node</code>.</p><p>The·following·example·shows·how | 535 | where·the·schema·table·resides·is·regarded·as·a·<code·class="inline">db_node</code>.</p><p>The·following·example·shows·how |
| 536 | <a·href="mnesia.html#traverse_backup/4"><code·class="inline">mnesia:traverse_backup</code></a>·can·be·used·to·rename·a | 536 | <a·href="mnesia.html#traverse_backup/4"><code·class="inline">mnesia:traverse_backup</code></a>·can·be·used·to·rename·a |
| 537 | <code·class="inline">db_node</code>·in·a·backup·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">change_node_name</span><span·class="p"·data-group-id=" | 537 | <code·class="inline">db_node</code>·in·a·backup·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">change_node_name</span><span·class="p"·data-group-id="6610992548-1">(</span><span·class="n">Mod</span><span·class="p">,</span><span·class="w">·</span><span·class="n">From</span><span·class="p">,</span><span·class="w">·</span><span·class="n">To</span><span·class="p">,</span><span·class="w">·</span><span·class=[·...·truncated·by·diffoscope;·len:·135,·SHA:·a419f99d61d80b41b24925f531d8f20e34d65f9f34c49ef2b071e98122bd4c8a·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 538 | ····</span><span·class="n">Switch</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 538 | ····</span><span·class="n">Switch</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 539 | ········</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 539 | ········</span><span·class="nf">fun</span><span·class="p"·data-group-id="6610992548-2">(</span><span·class="n">Node</span><span·class="p"·data-group-id="6610992548-2">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="n">Node</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="n">From</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">To</span><span·class="p">;</span><span·class="w"> |
| 540 | ···········</span><span·class="p"·data-group-id=" | 540 | ···········</span><span·class="p"·data-group-id="6610992548-3">(</span><span·class="n">Node</span><span·class="p"·data-group-id="6610992548-3">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="n">Node</span><span·class="w">·</span><span·class="o">==</span><sp[·...·truncated·by·diffoscope;·len:·466,·SHA:·cbf839e54fdd63b28a64d9a680dae8e7aca9d1d9a7e4e86cfdb11f2d007f0bf4·...·]-4">)</span><span·class="p">;</span><span·class="w"> |
| 541 | ···········</span><span·class="p"·data-group-id=" | 541 | ···········</span><span·class="p"·data-group-id="6610992548-6">(</span><span·class="n">Node</span><span·class="p"·data-group-id="6610992548-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Node</span><span·class="w"> |
| 542 | ········</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 542 | ········</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 543 | ····</span><span·class="n">Convert</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 543 | ····</span><span·class="n">Convert</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 544 | ········</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 544 | ········</span><span·class="nf">fun</span><span·class="p"·data-group-id="6610992548-7">(</span><span·class="p"·data-group-id="6610992548-8">{</span><span·class="ss">schema</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">version</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Version<[·...·truncated·by·diffoscope;·len:·174,·SHA:·6d84aa6fa59e504ff13666011a9d7bf0da3086a9073e27eb4c62c2ec57061571·...·]-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 545 | ················</span><span·class="p"·data-group-id=" | 545 | ················</span><span·class="p"·data-group-id="6610992548-9">{</span><span·class="p"·data-group-id="6610992548-10">[</span><span·class="p"·data-group-id="6610992548-11">{</span><span·class="ss">schema</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">version</span><span·class="p">,[·...·truncated·by·diffoscope;·len:·284,·SHA:·b2e2a1ef3b1b1ac5b540f389183d828d2b01122ab3ca59a537dc63f2c126d23a·...·]-9">}</span><span·class="p">;</span><span·class="w"> |
| 546 | ···········</span><span·class="p"·data-group-id=" | 546 | ···········</span><span·class="p"·data-group-id="6610992548-12">(</span><span·class="p"·data-group-id="6610992548-13">{</span><span·class="ss">schema</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">cookie</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cookie<[·...·truncated·by·diffoscope;·len:·175,·SHA:·2f9a95a40faafb687141c9ed6a3d96bb01a00c8ee1c6de3b8e22e44f8e6032a7·...·]-12">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 547 | ················</span><span·class="p"·data-group-id=" | 547 | ················</span><span·class="p"·data-group-id="6610992548-14">{</span><span·class="p"·data-group-id="6610992548-15">[</span><span·class="p"·data-group-id="6610992548-16">{</span><span·class="ss">schema</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">cookie</span><span·class="p">,[·...·truncated·by·diffoscope;·len:·283,·SHA:·846bef8c6c7367874805a81b99061db586923b7b534722f9d9bc8c700f3a0958·...·]-14">}</span><span·class="p">;</span><span·class="w"> |
| 548 | ···········</span><span·class="p"·data-group-id=" | 548 | ···········</span><span·class="p"·data-group-id="6610992548-17">(</span><span·class="p"·data-group-id="6610992548-18">{</span><span·class="ss">schema</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tab</span><span·class="p">,</span><span·class="w">·</span><span·class="n">CreateList<[·...·truncated·by·diffoscope;·len:·175,·SHA:·2a20d684e4aad88c87117e75a9dfe0ec2eea3e022962d0211c4ebcbc68dd48d1·...·]-17">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 549 | ················</span><span·class="n">Keys</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 549 | ················</span><span·class="n">Keys</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6610992548-19">[</span><span·class="ss">ram_copies</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">disc_copies</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">disc_only_copies</span><span·class="p"·data-group-i[·...·truncated·by·diffoscope;·len:·13,·SHA:·b20be9f49b0bf99782c7aeb6782c45e3a0a364299e23b1002715af8fd3caac9c·...·]-19">]</span><span·class="p">,</span><span·class="w"> |
| 550 | ················</span><span·class="n">OptSwitch</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 550 | ················</span><span·class="n">OptSwitch</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 551 | ····················</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 551 | ····················</span><span·class="nf">fun</span><span·class="p"·data-group-id="6610992548-20">(</span><span·class="p"·data-group-id="6610992548-21">{</span><span·class="n">Key</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Val</span><span·class="p"·data-group-id="6610992548-21">}</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·16,·SHA:·2e8449e40fef4dff813d237e740610905fd60cf997e84d8450ca691543fdbdc2·...·]-20">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 552 | ····························</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">member</span><span·class="p"·data-group-id=" | 552 | ····························</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">member</span><span·class="p"·data-group-id="6610992548-22">(</span><span·class="n">Key</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Keys</span><span·class="p"·data-group-id="6610992548-22">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 553 | ································</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id=" | 553 | ································</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="6610992548-23">{</span><span·class="n">Key</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">map</span><span·class="p"·data-group-id="6610992548-24">(</span><span·class="n">Switch</s[·...·truncated·by·diffoscope;·len:·173,·SHA:·d58e2ff1777d11c50e90f103066e2f9502e1adb0a6bb8f5c8fb6581cecc5311c·...·]-23">}</span><span·class="p">;</span><span·class="w"> |
| 554 | ································</span><span·class="ss">false</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id=" | 554 | ································</span><span·class="ss">false</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="6610992548-25">{</span><span·class="n">Key</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Val</span><span·class="p"·data-group-id="6610992548-25">}</span><span·class="w"> |
| 555 | ····························</span><span·class="k">end</span><span·class="w"> | 555 | ····························</span><span·class="k">end</span><span·class="w"> |
| 556 | ····················</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 556 | ····················</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 557 | ················</span><span·class="p"·data-group-id=" | 557 | ················</span><span·class="p"·data-group-id="6610992548-26">{</span><span·class="p"·data-group-id="6610992548-27">[</span><span·class="p"·data-group-id="6610992548-28">{</span><span·class="ss">schema</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tab</span><span·class="p">,</sp[·...·truncated·by·diffoscope;·len:·551,·SHA:·fa61429617ca89d516feec397efb29a786f5072782b5d976af337ae37d863966·...·]-26">}</span><span·class="p">;</span><span·class="w"> |
| 558 | ···········</span><span·class="p"·data-group-id=" | 558 | ···········</span><span·class="p"·data-group-id="6610992548-30">(</span><span·class="n">Other</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Acc</span><span·class="p"·data-group-id="6610992548-30">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 559 | ················</span><span·class="p"·data-group-id=" | 559 | ················</span><span·class="p"·data-group-id="6610992548-31">{</span><span·class="p"·data-group-id="6610992548-32">[</span><span·class="n">Other</span><span·class="p"·data-group-id="6610992548-32">]</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Acc</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·18,·SHA:·533bca3d6fba26424a94e3a9e8b5c04cbe29927c428ee674c4616050871dd808·...·]-31">}</span><span·class="w"> |
| 560 | ········</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 560 | ········</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 561 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">traverse_backup</span><span·class="p"·data-group-id=" | 561 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">traverse_backup</span><span·class="p"·data-group-id="6610992548-33">(</span><span·class="n">Source</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Mod</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Target</span><span·class="p">,</span><span·class="w">·</span><span[·...·truncated·by·diffoscope;·len:·220,·SHA:·8aeb3dfd54e40568db276c8ca0a08ce6b7ea862c78d43fda903057369a170359·...·]-33">)</span><span·class="p">.</span><span·class="w"> |
| 562 | </span><span·class="nf">view</span><span·class="p"·data-group-id=" | 562 | </span><span·class="nf">view</span><span·class="p"·data-group-id="6610992548-34">(</span><span·class="n">Source</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Mod</span><span·class="p"·data-group-id="6610992548-34">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 563 | ····</span><span·class="n">View</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 563 | ····</span><span·class="n">View</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="6610992548-35">(</span><span·class="n">Item</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Acc</span><span·class="p"·data-group-id="6610992548-35">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 564 | ···················</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 564 | ···················</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="6610992548-36">(</span><span·class="s">"</span><span·class="si">~p</span><span·class="s">.</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="p"·data-group-id="6610992548-37">[</span><span·class="n">Item<[·...·truncated·by·diffoscope;·len:·101,·SHA:·f2190348292f9634f1f077d157fcded892366778ce0aca8bb57980f2442d95af·...·]-36">)</span><span·class="p">,</span><span·class="w"> |
| 565 | ···················</span><span·class="p"·data-group-id=" | 565 | ···················</span><span·class="p"·data-group-id="6610992548-38">{</span><span·class="p"·data-group-id="6610992548-39">[</span><span·class="n">Item</span><span·class="p"·data-group-id="6610992548-39">]</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Acc</span><span·class="w">·</span>[·...·truncated·by·diffoscope;·len:·114,·SHA:·fcf9fc33ba7ccc07a72b33a2b7fef6ad424b9ca1caaff7acc4e46728359c2437·...·]-38">}</span><span·class="w"> |
| 566 | ···········</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 566 | ···········</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 567 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">traverse_backup</span><span·class="p"·data-group-id=" | 567 | ····</span><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">traverse_backup</span><span·class="p"·data-group-id="6610992548-40">(</span><span·class="n">Source</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Mod</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">dummy</span><span·class="p">,</span><span·class="w">·</span><span[·...·truncated·by·diffoscope;·len:·217,·SHA:·19a92a24938e96cf671b01d8950f7ee10500b197fa433c4f908a9a3a1b157a29·...·]-40">)</span><span·class="p">.</span></code></pre><h3·id="restore"·class="section-heading"> |
| 568 | ··<a·href="#restore"·class="hover-link"> | 568 | ··<a·href="#restore"·class="hover-link"> |
| 569 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 569 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 570 | ··</a> | 570 | ··</a> |
| 571 | ··<span·class="text">Restore</span> | 571 | ··<span·class="text">Restore</span> |
| 572 | </h3> | 572 | </h3> |
| 573 | <p>Tables·can·be·restored·online·from·a·backup·without·restarting·<code·class="inline">Mnesia</code>.·A | 573 | <p>Tables·can·be·restored·online·from·a·backup·without·restarting·<code·class="inline">Mnesia</code>.·A |
| 574 | restore·is·performed·with·the·function | 574 | restore·is·performed·with·the·function |
| Offset 250, 16 lines modified | Offset 250, 16 lines modified | ||
| 250 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·create_table(Tab·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:atom/0">atom</a>(),·Opt·::·[{<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:atom/0">atom</a>(),·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>()}])·->·ok.</pre> | 250 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·create_table(Tab·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:atom/0">atom</a>(),·Opt·::·[{<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:atom/0">atom</a>(),·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>()}])·->·ok.</pre> |
| 251 | ······</div> | 251 | ······</div> |
| 252 | <section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p><em>This·function·is·deprecated.·Do·not·use·it.</em></p></section><p>A·wrapper·function·for·<a·href="mnesia.html#create_table/2"><code·class="inline">mnesia:create_table/2</code></a>,·which·creates·a·table·(if·there | 252 | <section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p><em>This·function·is·deprecated.·Do·not·use·it.</em></p></section><p>A·wrapper·function·for·<a·href="mnesia.html#create_table/2"><code·class="inline">mnesia:create_table/2</code></a>,·which·creates·a·table·(if·there |
| 253 | is·no·existing·table)·with·an·appropriate·set·of·<code·class="inline">attributes</code>.·The·attributes | 253 | is·no·existing·table)·with·an·appropriate·set·of·<code·class="inline">attributes</code>.·The·attributes |
| 254 | and·<code·class="inline">TabDef</code>·are·forwarded·to·<a·href="mnesia.html#create_table/2"><code·class="inline">mnesia:create_table/2</code></a>.·For·example,·if·the·table | 254 | and·<code·class="inline">TabDef</code>·are·forwarded·to·<a·href="mnesia.html#create_table/2"><code·class="inline">mnesia:create_table/2</code></a>.·For·example,·if·the·table |
| 255 | is·to·reside·as·<code·class="inline">disc_only_copies</code>·on·all·nodes,·a·call·looks·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··········</span><span·class="n">TabDef</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 255 | is·to·reside·as·<code·class="inline">disc_only_copies</code>·on·all·nodes,·a·call·looks·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··········</span><span·class="n">TabDef</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6897681594-1">[</span><span·class="p"·data-group-id="6897681594-2">{</span><span·class="p"·data-group-id="6897681594-3">{</span><span·class="ss">disc_only_copies</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">node</span><span·class=[·...·truncated·by·diffoscope;·len:·318,·SHA:·e0924e95c5d538a205b731ab7404a97ec5e01c55c50d1d41a339b779283918cb·...·]-3">}</span><span·class="p">]</span><span·class="p">,</span><span·class="w"> |
| 256 | ··········</span><span·class="nc">mnesia_registry</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id=" | 256 | ··········</span><span·class="nc">mnesia_registry</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id="6897681594-6">(</span><span·class="ss">my_reg</span><span·class="p">,</span><span·class="w">·</span><span·class="n">TabDef</span><span·class="p"·data-group-id="6897681594-6">)</span></code></pre> |
| 257 | ··</section> | 257 | ··</section> |
| 258 | </section> | 258 | </section> |
| 259 | ····</div> | 259 | ····</div> |
| 260 | ··</section> | 260 | ··</section> |
| 261 | ····<footer·class="footer"> | 261 | ····<footer·class="footer"> |
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| 1848 | returns·a·match·specification,·which·turns·on·sequential·tracing·with·the | 1848 | returns·a·match·specification,·which·turns·on·sequential·tracing·with·the |
| 1849 | specified·<code·class="inline">Flags</code>.</p><p>This·match·specification·can·be·specified·as·the·last·argument·to·<code·class="inline">tp</code>·or·<code·class="inline">tpl</code>. | 1849 | specified·<code·class="inline">Flags</code>.</p><p>This·match·specification·can·be·specified·as·the·last·argument·to·<code·class="inline">tp</code>·or·<code·class="inline">tpl</code>. |
| 1850 | The·activated·<code·class="inline">Item</code>·then·becomes·a·<em>trigger</em>·for·sequential·tracing.·This·means | 1850 | The·activated·<code·class="inline">Item</code>·then·becomes·a·<em>trigger</em>·for·sequential·tracing.·This·means |
| 1851 | that·if·the·item·is·called·on·a·process·with·trace·flag·<code·class="inline">call</code>·set,·the·process | 1851 | that·if·the·item·is·called·on·a·process·with·trace·flag·<code·class="inline">call</code>·set,·the·process |
| 1852 | is·"contaminated"·with·token·<code·class="inline">seq_trace</code>.</p><p>If·<code·class="inline">Flags·=·all</code>,·all·possible·flags·are·set.</p><p>The·possible·values·for·<code·class="inline">SeqTraceFlag</code>·are·available·in·<a·href="../../../../lib/kernel-10.2.3/doc/html/seq_trace.html"><code·class="inline">seq_trace</code></a>.</p><p>For·a·description·of·the·<code·class="inline">match_spec()</code>·syntax,·see·section | 1852 | is·"contaminated"·with·token·<code·class="inline">seq_trace</code>.</p><p>If·<code·class="inline">Flags·=·all</code>,·all·possible·flags·are·set.</p><p>The·possible·values·for·<code·class="inline">SeqTraceFlag</code>·are·available·in·<a·href="../../../../lib/kernel-10.2.3/doc/html/seq_trace.html"><code·class="inline">seq_trace</code></a>.</p><p>For·a·description·of·the·<code·class="inline">match_spec()</code>·syntax,·see·section |
| 1853 | <a·href="../../../../erts-15.2.3/doc/html/match_spec.html"><code·class="inline">Match·Specifications·in·Erlang</code></a>·in·ERTS,·which | 1853 | <a·href="../../../../erts-15.2.3/doc/html/match_spec.html"><code·class="inline">Match·Specifications·in·Erlang</code></a>·in·ERTS,·which |
| 1854 | explains·the·general·match·specification·"language".</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>The·<em>system·tracer</em>·for·sequential·tracing·is·automatically·initiated·by·<code·class="inline">ttb</code> | 1854 | explains·the·general·match·specification·"language".</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>The·<em>system·tracer</em>·for·sequential·tracing·is·automatically·initiated·by·<code·class="inline">ttb</code> |
| 1855 | when·a·trace·port·is·started·with·<code·class="inline">ttb:tracer/0,1,2</code>.</p></section><p>An·example·of·how·to·use·function·<code·class="inline">seq_trigger_ms/0,1</code>·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">(tiger@durin)5>·</span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">tracer</span><span·class="p"·data-group-id=" | 1855 | when·a·trace·port·is·started·with·<code·class="inline">ttb:tracer/0,1,2</code>.</p></section><p>An·example·of·how·to·use·function·<code·class="inline">seq_trigger_ms/0,1</code>·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">(tiger@durin)5>·</span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">tracer</span><span·class="p"·data-group-id="1491601008-1">(</span><span·class="p"·data-group-id="1491601008-1">)</span><span·class="p">.</span><span·class="w"> |
| 1856 | </span><span·class="p"·data-group-id=" | 1856 | </span><span·class="p"·data-group-id="1491601008-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="1491601008-3">[</span><span·class="ss">tiger@durin</span><span·class="p"·data-group-id="1491601008-3">]</span><span·class="p"·data-group-id="1491601008-2">}</span><span·class="gp·unselectable"> |
| 1857 | (tiger@durin)6>·</span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">p</span><span·class="p"·data-group-id=" | 1857 | (tiger@durin)6>·</span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">p</span><span·class="p"·data-group-id="1491601008-4">(</span><span·class="ss">all</span><span·class="p">,</span><span·class="ss">call</span><span·class="p"·data-group-id="1491601008-4">)</span><span·class="p">.</span><span·class="w"> |
| 1858 | </span><span·class="p"·data-group-id=" | 1858 | </span><span·class="p"·data-group-id="1491601008-5">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="1491601008-6">{</span><span·class="p"·data-group-id="1491601008-7">[</span><span·class="ss">all</span><span·class="p"·data-group-id="1491601008-7">]</spa[·...·truncated·by·diffoscope;·len:·254,·SHA:·88895f64515a7c840b44f3b48922748dac740ffb71d8632a72784edbd0e3aa24·...·]-5">}</span><span·class="gp·unselectable"> |
| 1859 | (tiger@durin)7>·</span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">tp</span><span·class="p"·data-group-id=" | 1859 | (tiger@durin)7>·</span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">tp</span><span·class="p"·data-group-id="1491601008-9">(</span><span·class="ss">mod</span><span·class="p">,</span><span·class="ss">func</span><span·class="p">,</span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">seq_trigger_ms</span><span·class="p"·data-group-id="1491601008-[·...·truncated·by·diffoscope;·len:·107,·SHA:·b9c22330f6f6081b9fd45914639e41a251f3e88c7669b9a4456f9e32cac16108·...·]-9">)</span><span·class="p">.</span><span·class="w"> |
| 1860 | </span><span·class="p"·data-group-id=" | 1860 | </span><span·class="p"·data-group-id="1491601008-11">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="1491601008-12">[</span><span·class="p"·data-group-id="1491601008-13">{</span><span·class="ss">matched</span><span·class="p">,</span><span·class="mi">1</[·...·truncated·by·diffoscope;·len:·364,·SHA:·7e4c0be980f7aa8731d28506517a35fcc807fa72d90c2fc3bbe5dfc3d9aa7165·...·]-11">}</span><span·class="w"> |
| 1861 | </span><span·class="p"·data-group-id=" | 1861 | </span><span·class="p"·data-group-id="1491601008-15">(</span><span·class="ss">tiger@durin</span><span·class="p"·data-group-id="1491601008-15">)</span><span·class="mi">8</span><span·class="o">></span></code></pre><p>Whenever·<code·class="inline">mod:func(...)</code>·is·called·after·this,·token·<code·class="inline">seq_trace</code>·is·set·on·the |
| 1862 | executing·process.</p> | 1862 | executing·process.</p> |
| 1863 | ··</section> | 1863 | ··</section> |
| 1864 | </section> | 1864 | </section> |
| 1865 | <section·class="detail"·id="start_trace/4"> | 1865 | <section·class="detail"·id="start_trace/4"> |
| 1866 | ··<div·class="detail-header"> | 1866 | ··<div·class="detail-header"> |
| 1867 | ····<a·href="#start_trace/4"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1867 | ····<a·href="#start_trace/4"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 1891, 22 lines modified | Offset 1891, 22 lines modified | ||
| 1891 | ·························TracerOpts·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>(), | 1891 | ·························TracerOpts·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>(), |
| 1892 | ·························Result·::·{ok,·[{<a·href="#t:item/0">item</a>(),·<a·href="#t:match_desc/0">match_desc</a>()}]}.</pre> | 1892 | ·························Result·::·{ok,·[{<a·href="#t:item/0">item</a>(),·<a·href="#t:match_desc/0">match_desc</a>()}]}.</pre> |
| 1893 | ······</div> | 1893 | ······</div> |
| 1894 | <p>This·function·is·a·shortcut·allowing·to·start·a·trace·with·one·command.·Each | 1894 | <p>This·function·is·a·shortcut·allowing·to·start·a·trace·with·one·command.·Each |
| 1895 | tuple·in·<code·class="inline">Patterns</code>·is·converted·to·a·list,·which·in·turn·is·passed·to | 1895 | tuple·in·<code·class="inline">Patterns</code>·is·converted·to·a·list,·which·in·turn·is·passed·to |
| 1896 | <code·class="inline">ttb:tpl/2,3,4</code>.</p><p>The·call:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">start_trace</span><span·class="p"·data-group-id=" | 1896 | <code·class="inline">ttb:tpl/2,3,4</code>.</p><p>The·call:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">start_trace</span><span·class="p"·data-group-id="1363832525-1">(</span><span·class="p"·data-group-id="1363832525-2">[</span><span·class="n">Node</span><span·class="p">,</span><span·class="w">·</span><span·class="n">OtherNode</span><span·class="p"·data-group-id="1363832525-2">]</span><span·class="p">,</span><span·class="w"> |
| 1897 | ··················</span><span·class="p"·data-group-id=" | 1897 | ··················</span><span·class="p"·data-group-id="1363832525-3">[</span><span·class="p"·data-group-id="1363832525-4">{</span><span·class="ss">mod</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="[·...·truncated·by·diffoscope;·len:·498,·SHA:·719d126312dc557bf093b1aa210ce2c4245fe36a1cdcabfe0f7aba2d06c82a23·...·]-3">]</span><span·class="p">,</span><span·class="w"> |
| 1898 | ··················</span><span·class="p"·data-group-id=" | 1898 | ··················</span><span·class="p"·data-group-id="1363832525-7">{</span><span·class="ss">all</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">call</span><span·class="p"·data-group-id="1363832525-7">}</span><span·class="p">,</span><span·class="w"> |
| 1899 | ··················</span><span·class="p"·data-group-id=" | 1899 | ··················</span><span·class="p"·data-group-id="1363832525-8">[</span><span·class="p"·data-group-id="1363832525-9">{</span><span·class="ss">file</span><span·class="p">,</span><span·class="w">·</span><span·class="n">File</span><span·class="p"·data-group-id="1363832525-9">}</span><span·class="p">,</span><[·...·truncated·by·diffoscope;·len:·1095,·SHA:·1d82066022c193840ef869f83ee065fbdb43c2dc791ee2c76fb626a3f6d297c5·...·]-2">]</span><span·class="p">,</span><span·class="w"> |
| 1900 | ··················</span><span·class="p"·data-group-id=" | 1900 | ··················</span><span·class="p"·data-group-id="2374881505-3">[</span><span·class="p"·data-group-id="2374881505-4">{</span><span·class="ss">file</span><span·class="p">,</span><span·class="w">·</span><span·class="n">File</span><span·class="p"·data-group-id="2374881505-4">}</span><span·class="p">,</span><[·...·truncated·by·diffoscope;·len:·588,·SHA:·9f9383db60842c94d7471c5dd3fac56ed05fd76d45107bdabfaced13f94023f8·...·]-1">)</span><span·class="p">,</span><span·class="w"> |
| 1901 | </span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">tpl</span><span·class="p"·data-group-id=" | 1901 | </span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">tpl</span><span·class="p"·data-group-id="2374881505-7">(</span><span·class="ss">mod</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2374881505-8">[</span><span·class="p"·data-group-id="[·...·truncated·by·diffoscope;·len:·63,·SHA:·9b1fa12cce1b25692bad67176f0c637f3782d1bb03b30c12556ea985d2e0036d·...·]-7">)</span><span·class="p">,</span><span·class="w"> |
| 1902 | </span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">tpl</span><span·class="p"·data-group-id=" | 1902 | </span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">tpl</span><span·class="p"·data-group-id="2374881505-9">(</span><span·class="ss">mod</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">bar</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">2</span><span·class="p">,</span><span·class="w">·</span><span·class[·...·truncated·by·diffoscope;·len:·138,·SHA:·3d725bd15a4d4b49bbb2c49c824e128a0d5c69ad5fb000d070ccaba5d8a415db·...·]-9">)</span><span·class="p">,</span><span·class="w"> |
| 1903 | </span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">p</span><span·class="p"·data-group-id=" | 1903 | </span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">p</span><span·class="p"·data-group-id="2374881505-11">(</span><span·class="ss">all</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">call</span><span·class="p"·data-group-id="2374881505-11">)</span><span·class="p">.</span></code></pre> |
| 1904 | ··</section> | 1904 | ··</section> |
| 1905 | </section> | 1905 | </section> |
| 1906 | <section·class="detail"·id="stop/0"> | 1906 | <section·class="detail"·id="stop/0"> |
| 1907 | ··<div·class="detail-header"> | 1907 | ··<div·class="detail-header"> |
| 1908 | ····<a·href="#stop/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1908 | ····<a·href="#stop/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1909 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1909 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 168, 130 lines modified | Offset 168, 130 lines modified | ||
| 168 | graphically·with·application·Event·Tracer·(ET).</p><p>If·option·<code·class="inline">format</code>·is·specified·to·<a·href="ttb.html#stop/1"><code·class="inline">ttb:stop/1</code></a>,·the·formatting·is | 168 | graphically·with·application·Event·Tracer·(ET).</p><p>If·option·<code·class="inline">format</code>·is·specified·to·<a·href="ttb.html#stop/1"><code·class="inline">ttb:stop/1</code></a>,·the·formatting·is |
| 169 | automatically·done·when·stopping·<code·class="inline">ttb</code>.</p></li></ul><h3·id="tracing-local-node-from-erlang-shell"·class="section-heading"> | 169 | automatically·done·when·stopping·<code·class="inline">ttb</code>.</p></li></ul><h3·id="tracing-local-node-from-erlang-shell"·class="section-heading"> |
| 170 | ··<a·href="#tracing-local-node-from-erlang-shell"·class="hover-link"> | 170 | ··<a·href="#tracing-local-node-from-erlang-shell"·class="hover-link"> |
| 171 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 171 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 172 | ··</a> | 172 | ··</a> |
| 173 | ··<span·class="text">Tracing·Local·Node·from·Erlang·Shell</span> | 173 | ··<span·class="text">Tracing·Local·Node·from·Erlang·Shell</span> |
| 174 | </h3> | 174 | </h3> |
| 175 | <p>The·following·small·module·is·used·in·the·subsequent·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 175 | <p>The·following·small·module·is·used·in·the·subsequent·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="9914665555-1">(</span><span·class="ss">m</span><span·class="p"·data-group-id="9914665555-1">)</span><span·class="p">.</span><span·class="w"> |
| 176 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 176 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="9914665555-2">(</span><span·class="p"·data-group-id="9914665555-3">[</span><span·class="ss">f</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data-group-id="9914665555-3">]</span><span·class="p"·data-group-id="9914665555-2">)</span><span·class="p">.</span><span·class="w"> |
| 177 | </span><span·class="nf">f</span><span·class="p"·data-group-id=" | 177 | </span><span·class="nf">f</span><span·class="p"·data-group-id="9914665555-4">(</span><span·class="p"·data-group-id="9914665555-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 178 | ···</span><span·class="k">receive</span><span·class="w"> | 178 | ···</span><span·class="k">receive</span><span·class="w"> |
| 179 | ······</span><span·class="n">From</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_pid</span><span·class="p"·data-group-id=" | 179 | ······</span><span·class="n">From</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_pid</span><span·class="p"·data-group-id="9914665555-5">(</span><span·class="n">From</span><span·class="p"·data-group-id="9914665555-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 180 | ·········</span><span·class="n">Now</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">now</span><span·class="p"·data-group-id=" | 180 | ·········</span><span·class="n">Now</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">now</span><span·class="p"·data-group-id="9914665555-6">(</span><span·class="p"·data-group-id="9914665555-6">)</span><span·class="p">,</span><span·class="w"> |
| 181 | ·········</span><span·class="n">From</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 181 | ·········</span><span·class="n">From</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="9914665555-7">{</span><span·class="nf">self</span><span·class="p"·data-group-id="9914665555-8">(</span><span·class="p"·data-group-id="9914665555-8">)</span><span·class="p">,</span><span·class="n">Now</span><span·class="p"·data-group-id="9914665555-7">}</span><span·class="w"> |
| 182 | ···</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>The·following·example·shows·the·basic·use·of·<code·class="inline">ttb</code>·from·the·Erlang·shell. | 182 | ···</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>The·following·example·shows·the·basic·use·of·<code·class="inline">ttb</code>·from·the·Erlang·shell. |
| 183 | Default·options·are·used·both·for·starting·the·tracer·and·for·formatting·(the | 183 | Default·options·are·used·both·for·starting·the·tracer·and·for·formatting·(the |
| 184 | custom·fetch·directory·is·however·provided).·This·gives·a·trace·log·named | 184 | custom·fetch·directory·is·however·provided).·This·gives·a·trace·log·named |
| 185 | <code·class="inline">Node-ttb</code>·in·the·newly·created·directory,·where·<code·class="inline">Node</code>·is·the·node·name.·The | 185 | <code·class="inline">Node-ttb</code>·in·the·newly·created·directory,·where·<code·class="inline">Node</code>·is·the·node·name.·The |
| 186 | default·handler·prints·the·formatted·trace·messages·in·the·shell:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">(tiger@durin)47>·</span><span·class="c1">%%·First·I·spawn·a·process·running·my·test·function</span><span·class="gp·unselectable"> | 186 | default·handler·prints·the·formatted·trace·messages·in·the·shell:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">(tiger@durin)47>·</span><span·class="c1">%%·First·I·spawn·a·process·running·my·test·function</span><span·class="gp·unselectable"> |
| 187 | (tiger@durin)47>·</span><span·class="n">Pid</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">spawn</span><span·class="p"·data-group-id=" | 187 | (tiger@durin)47>·</span><span·class="n">Pid</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">spawn</span><span·class="p"·data-group-id="6101285938-1">(</span><span·class="ss">m</span><span·class="p">,</span><span·class="ss">f</span><span·class="p">,</span><span·class="p"·data-group-id="6101285938-2">[</span><span·class="p"·data-group-id="6101285938-2">]</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·11,·SHA:·e80f2d642a2cb7ff16ec717bcc3cdeb57b7d19bee0da1dc90ac73895062e9464·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 188 | </span><span·class="o"><</span><span·class="mf">0.125</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w"> | 188 | </span><span·class="o"><</span><span·class="mf">0.125</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w"> |
| 189 | </span><span·class="p"·data-group-id=" | 189 | </span><span·class="p"·data-group-id="6101285938-3">(</span><span·class="ss">tiger@durin</span><span·class="p"·data-group-id="6101285938-3">)</span><span·class="mi">48</span><span·class="o">></span><span·class="gp·unselectable"> |
| 190 | (tiger@durin)48>·</span><span·class="c1">%%·Then·I·start·a·tracer...</span><span·class="gp·unselectable"> | 190 | (tiger@durin)48>·</span><span·class="c1">%%·Then·I·start·a·tracer...</span><span·class="gp·unselectable"> |
| 191 | (tiger@durin)48>·</span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">tracer</span><span·class="p"·data-group-id=" | 191 | (tiger@durin)48>·</span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">tracer</span><span·class="p"·data-group-id="6101285938-4">(</span><span·class="p"·data-group-id="6101285938-4">)</span><span·class="p">.</span><span·class="w"> |
| 192 | </span><span·class="p"·data-group-id="9055670967-5">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="9055670967-6">[</span><span·class="ss">tiger@durin</span><span·class="p"·data-group-id="9055670967-6">]</span><span·class="p"·data-group-id="9055670967-5">}</span><span·class="w"> | ||
| 193 | </span><span·class="p"·data-group-id=" | 192 | </span><span·class="p"·data-group-id="6101285938-5">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="6101285938-6">[</span><span·class="ss">tiger@durin</span><span·class="p"·data-group-id="6101285938-6">]</span><span·class="p"·data-group-id="6101285938-5[·...·truncated·by·diffoscope;·len:·24,·SHA:·9514610d0b259140b5a72a9a59a9416af812489313b738ea51e1262922ca17e0·...·]"> |
| 193 | </span><span·class="p"·data-group-id="6101285938-7">(</span><span·class="ss">tiger@durin</span><span·class="p"·data-group-id="6101285938-7">)</span><span·class="mi">49</span><span·class="o">></span><span·class="gp·unselectable"> | ||
| 194 | (tiger@durin)49>·</span><span·class="c1">%%·and·activate·the·new·process·for·tracing</span><span·class="gp·unselectable"> | 194 | (tiger@durin)49>·</span><span·class="c1">%%·and·activate·the·new·process·for·tracing</span><span·class="gp·unselectable"> |
| 195 | (tiger@durin)49>·</span><span·class="c1">%%·function·calls·and·sent·messages.</span><span·class="gp·unselectable"> | 195 | (tiger@durin)49>·</span><span·class="c1">%%·function·calls·and·sent·messages.</span><span·class="gp·unselectable"> |
| 196 | (tiger@durin)49>·</span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">p</span><span·class="p"·data-group-id=" | 196 | (tiger@durin)49>·</span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">p</span><span·class="p"·data-group-id="6101285938-8">(</span><span·class="n">Pid</span><span·class="p">,</span><span·class="p"·data-group-id="6101285938-9">[</span><span·class="ss">call</span><span·class="p">,</span><span·class="nb">send</span><span·class="p"·data-group-id="6101285938-9">]</spa[·...·truncated·by·diffoscope;·len:·43,·SHA:·ab0a249f575a11f1b64be0303d6d28bbbf6de1506dacff0c7e951bfcdab4f9ae·...·]-8">)</span><span·class="p">.</span><span·class="w"> |
| 197 | </span><span·class="p"·data-group-id="9055670967-10">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="9055670967-11">[</span><span·class="p"·data-group-id="9055670967-12">{</span><span·class="o"><</span><span·class="mf">0.125</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="p"·data-group-id="9055670967-13">[</span><span·class="p"·data-group-id="9055670967-14">{</span><span·class="ss">matched</span><span·class="p">,</span><span·class="ss">tiger@durin</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="9055670967-14">}</span><span·class="p"·data-group-id="9055670967-13">]</span><span·class="p"·data-group-id="9055670967-12">}</span><span·class="p"·data-group-id="9055670967-11">]</span><span·class="p"·data-group-id="9055670967-10">}</span><span·class="w"> | ||
| 198 | </span><span·class="p"·data-group-id=" | 197 | </span><span·class="p"·data-group-id="6101285938-10">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="6101285938-11">[</span><span·class="p"·data-group-id="6101285938-12">{</span><span·class="o"><</span><span·class="mf">0.125</span><span·class="p">.</[·...·truncated·by·diffoscope;·len:·612,·SHA:·1d66c52092e69e23b69e1809cda0ae0318aa5bd44c62b9626f30f0863eb0c7c0·...·]"> |
| 198 | </span><span·class="p"·data-group-id="6101285938-15">(</span><span·class="ss">tiger@durin</span><span·class="p"·data-group-id="6101285938-15">)</span><span·class="mi">50</span><span·class="o">></span><span·class="gp·unselectable"> | ||
| 199 | (tiger@durin)50>·</span><span·class="c1">%%·Here·I·set·a·trace·pattern·on·erlang:now/0</span><span·class="gp·unselectable"> | 199 | (tiger@durin)50>·</span><span·class="c1">%%·Here·I·set·a·trace·pattern·on·erlang:now/0</span><span·class="gp·unselectable"> |
| 200 | (tiger@durin)50>·</span><span·class="c1">%%·The·trace·pattern·is·a·simple·match·spec</span><span·class="gp·unselectable"> | 200 | (tiger@durin)50>·</span><span·class="c1">%%·The·trace·pattern·is·a·simple·match·spec</span><span·class="gp·unselectable"> |
| 201 | (tiger@durin)50>·</span><span·class="c1">%%·indicating·that·the·return·value·should·be</span><span·class="gp·unselectable"> | 201 | (tiger@durin)50>·</span><span·class="c1">%%·indicating·that·the·return·value·should·be</span><span·class="gp·unselectable"> |
| 202 | (tiger@durin)50>·</span><span·class="c1">%%·traced.·Refer·to·the·reference_manual·for</span><span·class="gp·unselectable"> | 202 | (tiger@durin)50>·</span><span·class="c1">%%·traced.·Refer·to·the·reference_manual·for</span><span·class="gp·unselectable"> |
| 203 | (tiger@durin)50>·</span><span·class="c1">%%·the·full·list·of·match·spec·shortcuts</span><span·class="gp·unselectable"> | 203 | (tiger@durin)50>·</span><span·class="c1">%%·the·full·list·of·match·spec·shortcuts</span><span·class="gp·unselectable"> |
| 204 | (tiger@durin)50>·</span><span·class="c1">%%·available.</span><span·class="gp·unselectable"> | 204 | (tiger@durin)50>·</span><span·class="c1">%%·available.</span><span·class="gp·unselectable"> |
| 205 | (tiger@durin)51>·</span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">tp</span><span·class="p"·data-group-id=" | 205 | (tiger@durin)51>·</span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">tp</span><span·class="p"·data-group-id="6101285938-16">(</span><span·class="ss">erlang</span><span·class="p">,</span><span·class="ss">now</span><span·class="p">,</span><span·class="ss">return</span><span·class="p"·data-group-id="6101285938-16">)</span><span·class="p">.</span><span·class="w"> |
| 206 | </span><span·class="p"·data-group-id="9055670967-17">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="9055670967-18">[</span><span·class="p"·data-group-id="9055670967-19">{</span><span·class="ss">matched</span><span·class="p">,</span><span·class="ss">tiger@durin</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="9055670967-19">}</span><span·class="p">,</span><span·class="p"·data-group-id="9055670967-20">{</span><span·class="ss">saved</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="9055670967-20">}</span><span·class="p"·data-group-id="9055670967-18">]</span><span·class="p"·data-group-id="9055670967-17">}</span><span·class="w"> | ||
| 207 | </span><span·class="p"·data-group-id=" | 206 | </span><span·class="p"·data-group-id="6101285938-17">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="6101285938-18">[</span><span·class="p"·data-group-id="6101285938-19">{</span><span·class="ss">matched</span><span·class="p">,</span><span·class="ss">tig[·...·truncated·by·diffoscope;·len:·450,·SHA:·103425ceff4a2dda1e184d86f8db7c254e4b05fd1b9cb4c7f5c560a925413531·...·]"> |
| 207 | </span><span·class="p"·data-group-id="6101285938-21">(</span><span·class="ss">tiger@durin</span><span·class="p"·data-group-id="6101285938-21">)</span><span·class="mi">52</span><span·class="o">></span><span·class="gp·unselectable"> | ||
| 208 | (tiger@durin)52>·</span><span·class="c1">%%·I·run·my·test·(i.e.·send·a·message·to</span><span·class="gp·unselectable"> | 208 | (tiger@durin)52>·</span><span·class="c1">%%·I·run·my·test·(i.e.·send·a·message·to</span><span·class="gp·unselectable"> |
| 209 | (tiger@durin)52>·</span><span·class="c1">%%·my·new·process)</span><span·class="gp·unselectable"> | 209 | (tiger@durin)52>·</span><span·class="c1">%%·my·new·process)</span><span·class="gp·unselectable"> |
| 210 | (tiger@durin)52>·</span><span·class="n">Pid</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id=" | 210 | (tiger@durin)52>·</span><span·class="n">Pid</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="6101285938-22">(</span><span·class="p"·data-group-id="6101285938-22">)</span><span·class="p">.</span><span·class="w"> |
| 211 | </span><span·class="o"><</span><span·class="mf">0.72</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w"> | 211 | </span><span·class="o"><</span><span·class="mf">0.72</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w"> |
| 212 | </span><span·class="p"·data-group-id=" | 212 | </span><span·class="p"·data-group-id="6101285938-23">(</span><span·class="ss">tiger@durin</span><span·class="p"·data-group-id="6101285938-23">)</span><span·class="mi">53</span><span·class="o">></span><span·class="gp·unselectable"> |
| 213 | (tiger@durin)53>·</span><span·class="c1">%%·And·then·I·have·to·stop·ttb·in·order·to·flush</span><span·class="gp·unselectable"> | 213 | (tiger@durin)53>·</span><span·class="c1">%%·And·then·I·have·to·stop·ttb·in·order·to·flush</span><span·class="gp·unselectable"> |
| 214 | (tiger@durin)53>·</span><span·class="c1">%%·the·trace·port·buffer</span><span·class="gp·unselectable"> | 214 | (tiger@durin)53>·</span><span·class="c1">%%·the·trace·port·buffer</span><span·class="gp·unselectable"> |
| 215 | (tiger@durin)53>·</span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id=" | 215 | (tiger@durin)53>·</span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id="6101285938-24">(</span><span·class="p"·data-group-id="6101285938-25">[</span><span·class="ss">return</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6101285938-26">{</span><span·class="ss">fetch_dir</span><span·class="p[·...·truncated·by·diffoscope;·len:·223,·SHA:·286cc7af2adda6044e46ace949e283f32b24a042da1c9fdbff834e8143ce7dbf·...·]-24">)</span><span·class="p">.</span><span·class="w"> |
| 216 | </span><span·class="p"·data-group-id=" | 216 | </span><span·class="p"·data-group-id="6101285938-27">{</span><span·class="ss">stopped</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"fetch"</span><span·class="p"·data-group-id="6101285938-27">}</span><span·class="w"> |
| 217 | </span><span·class="p"·data-group-id=" | 217 | </span><span·class="p"·data-group-id="6101285938-28">(</span><span·class="ss">tiger@durin</span><span·class="p"·data-group-id="6101285938-28">)</span><span·class="mi">54</span><span·class="o">></span><span·class="gp·unselectable"> |
| 218 | (tiger@durin)54>·</span><span·class="c1">%%·Finally·I·format·my·trace·log</span><span·class="gp·unselectable"> | 218 | (tiger@durin)54>·</span><span·class="c1">%%·Finally·I·format·my·trace·log</span><span·class="gp·unselectable"> |
| 219 | (tiger@durin)54>·</span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 219 | (tiger@durin)54>·</span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="6101285938-29">(</span><span·class="s">"fetch"</span><span·class="p"·data-group-id="6101285938-29">)</span><span·class="p">.</span><span·class="w"> |
| 220 | </span><span·class="p"·data-group-id=" | 220 | </span><span·class="p"·data-group-id="6101285938-30">(</span><span·class="p"·data-group-id="6101285938-31">{</span><span·class="o"><</span><span·class="mf">0.125</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·627,·SHA:·32117931afa2d017e059e1f786720cad5007b6f8339d8871bb53bd3896d97137·...·]-33">)</span><span·class="w"> |
| 221 | </span><span·class="p"·data-group-id=" | 221 | </span><span·class="p"·data-group-id="6101285938-34">(</span><span·class="p"·data-group-id="6101285938-35">{</span><span·class="o"><</span><span·class="mf">0.125</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·362,·SHA:·cc16200b92e27d0bcd06a6ec5643053b74d6e8e256ad3d8adc33fb6e24590148·...·]-34">)</span><span·class="w">·</span><span·class="ss">returned</span><span·class="w">·</span><span·class="ss">from</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="ss">now</span><span·class="p">/</span><span·class="mi">0</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 222 | </span><span·class="p"·data-group-id=" | 222 | </span><span·class="p"·data-group-id="6101285938-37">{</span><span·class="mi">1031</span><span·class="p">,</span><span·class="mi">133451</span><span·class="p">,</span><span·class="mi">667611</span><span·class="p"·data-group-id="6101285938-37">}</span><span·class="w"> |
| 223 | </span><span·class="p"·data-group-id=" | 223 | </span><span·class="p"·data-group-id="6101285938-38">(</span><span·class="p"·data-group-id="6101285938-39">{</span><span·class="o"><</span><span·class="mf">0.125</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·362,·SHA:·5ee21ba227689507c9e3fa72c483f6cfce3f630afbd2cb36537cd27de33b4842·...·]-38">)</span><span·class="w">·</span><span·class="o"><</span><span·class="mf">0.72</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">·</span><span·class="o">!</span><span·class="w"> |
| 224 | </span><span·class="p"·data-group-id=" | 224 | </span><span·class="p"·data-group-id="6101285938-41">{</span><span·class="o"><</span><span·class="mf">0.125</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="p"·data-group-id="6101285938-42">{</span><span·class="mi">1031</[·...·truncated·by·diffoscope;·len:·208,·SHA:·04d245579fac6014ec419dd7ddb015687df7116314199f632de03e6c285e8e93·...·]-41">}</span><span·class="w"> |
| 225 | </span><span·class="ss">ok</span></code></pre><h3·id="build-your-own-tool"·class="section-heading"> | 225 | </span><span·class="ss">ok</span></code></pre><h3·id="build-your-own-tool"·class="section-heading"> |
| 226 | ··<a·href="#build-your-own-tool"·class="hover-link"> | 226 | ··<a·href="#build-your-own-tool"·class="hover-link"> |
| 227 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 227 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 228 | ··</a> | 228 | ··</a> |
| 229 | ··<span·class="text">Build·Your·Own·Tool</span> | 229 | ··<span·class="text">Build·Your·Own·Tool</span> |
| 230 | </h3> | 230 | </h3> |
| 231 | <p>The·following·example·shows·a·simple·tool·for·"debug·tracing",·that·is,·tracing | 231 | <p>The·following·example·shows·a·simple·tool·for·"debug·tracing",·that·is,·tracing |
| 232 | of·function·calls·with·return·values:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 232 | of·function·calls·with·return·values:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="1711565569-1">(</span><span·class="ss">mydebug</span><span·class="p"·data-group-id="1711565569-1">)</span><span·class="p">.</span><span·class="w"> |
| 233 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 233 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="1711565569-2">(</span><span·class="p"·data-group-id="1711565569-3">[</span><span·class="ss">start</span><span·class="p">/</span><span·class="mi">0</span><span·class="p">,</span><span·class="ss">trc</span><span·class="p">/</span><span·class="mi">1</span><sp[·...·truncated·by·diffoscope;·len:·295,·SHA:·8dc835cc4de5784d1a2b578ed8c95b20bc0c345ccbf8b3dd46067e45ca88cd82·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 234 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 234 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="1711565569-4">(</span><span·class="p"·data-group-id="1711565569-5">[</span><span·class="ss">print</span><span·class="p">/</span><span·class="mi">4</span><span·class="p"·data-group-id="1711565569-5">]</span><span·class="p"·data-group-id="1711565569-4">)</span><span·class="p">.</span><span·class="w"> |
| 235 | </span><span·class="c1">%%·Include·ms_transform.hrl·so·that·I·can·use·dbg:fun2ms/2·to</span><span·class="w"> | 235 | </span><span·class="c1">%%·Include·ms_transform.hrl·so·that·I·can·use·dbg:fun2ms/2·to</span><span·class="w"> |
| 236 | </span><span·class="c1">%%·generate·match·specifications.</span><span·class="w"> | 236 | </span><span·class="c1">%%·generate·match·specifications.</span><span·class="w"> |
| 237 | </span><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id=" | 237 | </span><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="1711565569-6">(</span><span·class="s">"stdlib/include/ms_transform.hrl"</span><span·class="p"·data-group-id="1711565569-6">)</span><span·class="p">.</span><span·class="w"> |
| 238 | </span><span·class="c1">%%%·-------------Tool·API-------------</span><span·class="w"> | 238 | </span><span·class="c1">%%%·-------------Tool·API-------------</span><span·class="w"> |
| 239 | </span><span·class="c1">%%%·----------------------------------</span><span·class="w"> | 239 | </span><span·class="c1">%%%·----------------------------------</span><span·class="w"> |
| 240 | </span><span·class="c1">%%%·Star·the·"mydebug"·tool</span><span·class="w"> | 240 | </span><span·class="c1">%%%·Star·the·"mydebug"·tool</span><span·class="w"> |
| 241 | </span><span·class="nf">start</span><span·class="p"·data-group-id=" | 241 | </span><span·class="nf">start</span><span·class="p"·data-group-id="1711565569-7">(</span><span·class="p"·data-group-id="1711565569-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 242 | ····</span><span·class="c1">%%·The·options·specify·that·the·binary·log·shall·be·named</span><span·class="w"> | 242 | ····</span><span·class="c1">%%·The·options·specify·that·the·binary·log·shall·be·named</span><span·class="w"> |
| 243 | ····</span><span·class="c1">%%·<Node>-debug_log·and·that·the·print/4·function·in·this</span><span·class="w"> | 243 | ····</span><span·class="c1">%%·<Node>-debug_log·and·that·the·print/4·function·in·this</span><span·class="w"> |
| 244 | ····</span><span·class="c1">%%·module·shall·be·used·as·format·handler</span><span·class="w"> | 244 | ····</span><span·class="c1">%%·module·shall·be·used·as·format·handler</span><span·class="w"> |
| 245 | ····</span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">tracer</span><span·class="p"·data-group-id=" | 245 | ····</span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">tracer</span><span·class="p"·data-group-id="1711565569-8">(</span><span·class="ss">all</span><span·class="p">,</span><span·class="p"·data-group-id="1711565569-9">[</span><span·class="p"·data-group-id="1711565569-10">{</span><span·class="ss">file</span><span·class="p">,</span><span·class="s">"de[·...·truncated·by·diffoscope;·len:·726,·SHA:·065f89c8360e3be66b4f2361180ba78213a1f44f7c941fbac3d7039c4d60d617·...·]-8">)</span><span·class="p">,</span><span·class="w"> |
| 246 | ····</span><span·class="c1">%%·All·processes·(existing·and·new)·shall·trace·function·calls</span><span·class="w"> | 246 | ····</span><span·class="c1">%%·All·processes·(existing·and·new)·shall·trace·function·calls</span><span·class="w"> |
| 247 | ····</span><span·class="c1">%%·We·want·trace·messages·to·be·sorted·upon·format,·which·requires</span><span·class="w"> | 247 | ····</span><span·class="c1">%%·We·want·trace·messages·to·be·sorted·upon·format,·which·requires</span><span·class="w"> |
| 248 | ····</span><span·class="c1">%%·timestamp·flag.·The·flag·is·however·enabled·by·default·in·ttb.</span><span·class="w"> | 248 | ····</span><span·class="c1">%%·timestamp·flag.·The·flag·is·however·enabled·by·default·in·ttb.</span><span·class="w"> |
| 249 | ····</span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">p</span><span·class="p"·data-group-id=" | 249 | ····</span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">p</span><span·class="p"·data-group-id="1711565569-14">(</span><span·class="ss">all</span><span·class="p">,</span><span·class="ss">call</span><span·class="p"·data-group-id="1711565569-14">)</span><span·class="p">.</span><span·class="w"> |
| 250 | </span><span·class="c1">%%%·Set·trace·pattern·on·function(s)</span><span·class="w"> | 250 | </span><span·class="c1">%%%·Set·trace·pattern·on·function(s)</span><span·class="w"> |
| 251 | </span><span·class="nf">trc</span><span·class="p"·data-group-id=" | 251 | </span><span·class="nf">trc</span><span·class="p"·data-group-id="1711565569-15">(</span><span·class="n">M</span><span·class="p"·data-group-id="1711565569-15">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_atom</span><span·class="p"·data-group-id="1711565569-16">(</[·...·truncated·by·diffoscope;·len:·70,·SHA:·574532f9bcc6f0df6b690e990a8909a332d92b27bbf7e9f3aa957dc0efe89cd0·...·]-16">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 252 | ····</span><span·class="nf">trc</span><span·class="p"·data-group-id=" | 252 | ····</span><span·class="nf">trc</span><span·class="p"·data-group-id="1711565569-17">(</span><span·class="p"·data-group-id="1711565569-18">{</span><span·class="n">M</span><span·class="p">,</span><span·class="ss">'_'</span><span·class="p">,</span><span·class="ss">'_'</span><span·class="p"·data-group-id="171156[·...·truncated·by·diffoscope;·len:·58,·SHA:·5697ec867ebeba37d05a35efc9f92204543bd5eb83574d9c1f0b7a81afb5023d·...·]-17">)</span><span·class="p">;</span><span·class="w"> |
| 253 | </span><span·class="nf">trc</span><span·class="p"·data-group-id=" | 253 | </span><span·class="nf">trc</span><span·class="p"·data-group-id="1711565569-19">(</span><span·class="p"·data-group-id="1711565569-20">{</span><span·class="n">M</span><span·class="p">,</span><span·class="n">F</span><span·class="p"·data-group-id="1711565569-20">}</span><span·class="p"·data-group-id="1711565569-19">)</span[·...·truncated·by·diffoscope;·len:·437,·SHA:·0bed93041adc2eec950a31136e6c167e8a674539562acefbe9a2688acd16c572·...·]-22">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 254 | ····</span><span·class="nf">trc</span><span·class="p"·data-group-id=" | 254 | ····</span><span·class="nf">trc</span><span·class="p"·data-group-id="1711565569-23">(</span><span·class="p"·data-group-id="1711565569-24">{</span><span·class="n">M</span><span·class="p">,</span><span·class="n">F</span><span·class="p">,</span><span·class="ss">'_'</span><span·class="p"·data-group-id="1711565569-24">}<[·...·truncated·by·diffoscope;·len:·47,·SHA:·9c8a0c296ec845c496812e8354359b39638e52b5c3ea3f1c0619a810160bfd88·...·]-23">)</span><span·class="p">;</span><span·class="w"> |
| 255 | </span><span·class="nf">trc</span><span·class="p"·data-group-id=" | 255 | </span><span·class="nf">trc</span><span·class="p"·data-group-id="1711565569-25">(</span><span·class="p"·data-group-id="1711565569-26">{</span><span·class="n">M</span><span·class="p">,</span><span·class="n">F</span><span·class="p">,</span><span·class="p">_</span><span·class="n">A</span><span·class="p"·data-group-id="1711[·...·truncated·by·diffoscope;·len:·559,·SHA:·02d15c7cbc4da32b40edd69a1f476e15158cda8bb7b457e3d5428eb0e72cc485·...·]-28">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 256 | ····</span><span·class="c1">%%·This·match·spec·shortcut·specifies·that·return·values·shall</span><span·class="w"> | 256 | ····</span><span·class="c1">%%·This·match·spec·shortcut·specifies·that·return·values·shall</span><span·class="w"> |
| 257 | ····</span><span·class="c1">%%·be·traced.</span><span·class="w"> | 257 | ····</span><span·class="c1">%%·be·traced.</span><span·class="w"> |
| 258 | ····</span><span·class="n">MatchSpec</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">fun2ms</span><span·class="p"·data-group-id=" | 258 | ····</span><span·class="n">MatchSpec</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">fun2ms</span><span·class="p"·data-group-id="1711565569-29">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="1711565569-30">(</span><span·class="p">_</span><span·class="p"·data-group-id="1711565569-30">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</spa[·...·truncated·by·diffoscope;·len:·237,·SHA:·bace561e01a9a797c11755de25f87c7f4f7cbf84c2a61fc73775f13f37843ab8·...·]-29">)</span><span·class="p">,</span><span·class="w"> |
| 259 | ····</span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">tpl</span><span·class="p"·data-group-id=" | 259 | ····</span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">tpl</span><span·class="p"·data-group-id="1711565569-32">(</span><span·class="n">MFA</span><span·class="p">,</span><span·class="n">MatchSpec</span><span·class="p"·data-group-id="1711565569-32">)</span><span·class="p">.</span><span·class="w"> |
| 260 | </span><span·class="c1">%%%·Format·a·binary·trace·log</span><span·class="w"> | 260 | </span><span·class="c1">%%%·Format·a·binary·trace·log</span><span·class="w"> |
| 261 | </span><span·class="nf">format</span><span·class="p"·data-group-id=" | 261 | </span><span·class="nf">format</span><span·class="p"·data-group-id="1711565569-33">(</span><span·class="n">Dir</span><span·class="p"·data-group-id="1711565569-33">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 262 | ····</span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 262 | ····</span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="1711565569-34">(</span><span·class="n">Dir</span><span·class="p"·data-group-id="1711565569-34">)</span><span·class="p">.</span><span·class="w"> |
| 263 | </span><span·class="c1">%%%·Stop·the·"mydebug"·tool</span><span·class="w"> | 263 | </span><span·class="c1">%%%·Stop·the·"mydebug"·tool</span><span·class="w"> |
| 264 | </span><span·class="nf">stop</span><span·class="p"·data-group-id=" | 264 | </span><span·class="nf">stop</span><span·class="p"·data-group-id="1711565569-35">(</span><span·class="p"·data-group-id="1711565569-35">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 265 | ····</span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id=" | 265 | ····</span><span·class="nc">ttb</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id="1711565569-36">(</span><span·class="ss">return</span><span·class="p"·data-group-id="1711565569-36">)</span><span·class="p">.</span><span·class="w"> |
| 266 | </span><span·class="c1">%%%·--------Internal·functions--------</span><span·class="w"> | 266 | </span><span·class="c1">%%%·--------Internal·functions--------</span><span·class="w"> |
| 267 | </span><span·class="c1">%%%·----------------------------------</span><span·class="w"> | 267 | </span><span·class="c1">%%%·----------------------------------</span><span·class="w"> |
| 268 | </span><span·class="c1">%%%·Format·handler</span><span·class="w"> | 268 | </span><span·class="c1">%%%·Format·handler</span><span·class="w"> |
| 269 | </span><span·class="nf">print</span><span·class="p"·data-group-id=" | 269 | </span><span·class="nf">print</span><span·class="p"·data-group-id="1711565569-37">(</span><span·class="p">_</span><span·class="n">Out</span><span·class="p">,</span><span·class="ss">end_of_trace</span><span·class="p">,</span><span·class="p">_</span><span·class="n">TI</span><span·class="p">,</span><span·class="n">N</span><s[·...·truncated·by·diffoscope;·len:·39,·SHA:·c4be3231ac699f52916c0dea3d2b39f4aee50c895930729b39699195f96dd6c3·...·]-37">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 270 | ····</span><span·class="n">N</span><span·class="p">;</span><span·class="w"> | 270 | ····</span><span·class="n">N</span><span·class="p">;</span><span·class="w"> |
| 271 | </span><span·class="nf">print</span><span·class="p"·data-group-id=" | 271 | </span><span·class="nf">print</span><span·class="p"·data-group-id="1711565569-38">(</span><span·class="n">Out</span><span·class="p">,</span><span·class="n">Trace</span><span·class="p">,</span><span·class="p">_</span><span·class="n">TI</span><span·class="p">,</span><span·class="n">N</span><span·class="p"·data-group-id="171[·...·truncated·by·diffoscope;·len:·7,·SHA:·2ff519d1a73a8ed2eed529e414ef6ca01cdb9272d7bdbaba52b0f20fb3340371·...·]-38">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 272 | ····</span><span·class="nf">do_print</span><span·class="p"·data-group-id=" | 272 | ····</span><span·class="nf">do_print</span><span·class="p"·data-group-id="1711565569-39">(</span><span·class="n">Out</span><span·class="p">,</span><span·class="n">Trace</span><span·class="p">,</span><span·class="n">N</span><span·class="p"·data-group-id="1711565569-39">)</span><span·class="p">,</span><span·class="w"> |
| 273 | ····</span><span·class="n">N</span><span·class="o">+</span><span·class="mi">1</span><span·class="p">.</span><span·class="w"> | 273 | ····</span><span·class="n">N</span><span·class="o">+</span><span·class="mi">1</span><span·class="p">.</span><span·class="w"> |
| 274 | </span><span·class="nf">do_print</span><span·class="p"·data-group-id=" | 274 | </span><span·class="nf">do_print</span><span·class="p"·data-group-id="1711565569-40">(</span><span·class="n">Out</span><span·class="p">,</span><span·class="p"·data-group-id="1711565569-41">{</span><span·class="ss">trace_ts</span><span·class="p">,</span><span·class="n">P</span><span·class="p">,</span><span·class="ss">call</sp[·...·truncated·by·diffoscope;·len:·447,·SHA:·e6ad1ed87e6c3ca78de6630b72c9fa4aaebbe0daf649b4f167295a73d4064ae6·...·]-40">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 275 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 275 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="1711565569-43">(</span><span·class="n">Out</span><span·class="p">,</span><span·class="w"> |
| 276 | ··············</span><span·class="s">"</span><span·class="si">~w</span><span·class="s">:·</span><span·class="si">~w</span><span·class="s">,·</span><span·class="si">~w</span><span·class="s">:</span><span·class="si">~n</span><span·class="s">"</span><span·class="w"> | 276 | ··············</span><span·class="s">"</span><span·class="si">~w</span><span·class="s">:·</span><span·class="si">~w</span><span·class="s">,·</span><span·class="si">~w</span><span·class="s">:</span><span·class="si">~n</span><span·class="s">"</span><span·class="w"> |
| 277 | ··············</span><span·class="s">"Call······:·</span><span·class="si">~w</span><span·class="s">:</span><span·class="si">~w</span><span·class="s">/</span><span·class="si">~w</span><span·class="si">~n</span><span·class="s">"</span><span·class="w"> | 277 | ··············</span><span·class="s">"Call······:·</span><span·class="si">~w</span><span·class="s">:</span><span·class="si">~w</span><span·class="s">/</span><span·class="si">~w</span><span·class="si">~n</span><span·class="s">"</span><span·class="w"> |
| 278 | ··············</span><span·class="s">"Arguments·:</span><span·class="si">~p</span><span·class="si">~n</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w"> | 278 | ··············</span><span·class="s">"Arguments·:</span><span·class="si">~p</span><span·class="si">~n</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w"> |
| 279 | ··············</span><span·class="p"·data-group-id=" | 279 | ··············</span><span·class="p"·data-group-id="1711565569-44">[</span><span·class="n">N</span><span·class="p">,</span><span·class="n">Ts</span><span·class="p">,</span><span·class="n">P</span><span·class="p">,</span><span·class="n">M</span><span·class="p">,</span><span·class="n">F</span><span·class="p">[·...·truncated·by·diffoscope;·len:·313,·SHA:·ec251923991483c1816fc4f3d3b58277b6a1f630dd903bdf8661d5e102218752·...·]-43">)</span><span·class="p">;</span><span·class="w"> |
| 280 | </span><span·class="nf">do_print</span><span·class="p"·data-group-id=" | 280 | </span><span·class="nf">do_print</span><span·class="p"·data-group-id="1711565569-46">(</span><span·class="n">Out</span><span·class="p">,</span><span·class="p"·data-group-id="1711565569-47">{</span><span·class="ss">trace_ts</span><span·class="p">,</span><span·class="n">P</span><span·class="p">,</span><span·class="ss">return_f[·...·truncated·by·diffoscope;·len:·502,·SHA:·39cc5c91e6b20c793cabbb8d7fb6626d5fecbacd5afbbaf4a4c37507c20cc60d·...·]-46">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 281 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 281 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="1711565569-49">(</span><span·class="n">Out</span><span·class="p">,</span><span·class="w"> |
| 282 | ··············</span><span·class="s">"</span><span·class="si">~w</span><span·class="s">:·</span><span·class="si">~w</span><span·class="s">,·</span><span·class="si">~w</span><span·class="s">:</span><span·class="si">~n</span><span·class="s">"</span><span·class="w"> | 282 | ··············</span><span·class="s">"</span><span·class="si">~w</span><span·class="s">:·</span><span·class="si">~w</span><span·class="s">,·</span><span·class="si">~w</span><span·class="s">:</span><span·class="si">~n</span><span·class="s">"</span><span·class="w"> |
| 283 | ··············</span><span·class="s">"Return·from··:·</span><span·class="si">~w</span><span·class="s">:</span><span·class="si">~w</span><span·class="s">/</span><span·class="si">~w</span><span·class="si">~n</span><span·class="s">"</span><span·class="w"> | 283 | ··············</span><span·class="s">"Return·from··:·</span><span·class="si">~w</span><span·class="s">:</span><span·class="si">~w</span><span·class="s">/</span><span·class="si">~w</span><span·class="si">~n</span><span·class="s">"</span><span·class="w"> |
| 284 | ··············</span><span·class="s">"Return·value·:</span><span·class="si">~p</span><span·class="si">~n</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w"> | 284 | ··············</span><span·class="s">"Return·value·:</span><span·class="si">~p</span><span·class="si">~n</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w"> |
| 285 | ··············</span><span·class="p"·data-group-id=" | 285 | ··············</span><span·class="p"·data-group-id="1711565569-50">[</span><span·class="n">N</span><span·class="p">,</span><span·class="n">Ts</span><span·class="p">,</span><span·class="n">P</span><span·class="p">,</span><span·class="n">M</span><span·class="p">,</span><span·class="n">F</span><span·class="p">[·...·truncated·by·diffoscope;·len:·175,·SHA:·14a7181b66f601743903cd9bb42111c0c9639c230864f11f50f8af26c9f2d973·...·]-49">)</span><span·class="p">.</span></code></pre><p>To·distinguish·trace·logs·produced·with·this·tool·from·other·logs,·option·<code·class="inline">file</code> |
| 286 | is·used·in·<a·href="ttb.html#tracer/2"><code·class="inline">tracer/2</code></a>.·The·logs·are·therefore·fetched·to·a | 286 | is·used·in·<a·href="ttb.html#tracer/2"><code·class="inline">tracer/2</code></a>.·The·logs·are·therefore·fetched·to·a |
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| 153 | ··<span·class="text">Using·the·Erlang·API</span> | 153 | ··<span·class="text">Using·the·Erlang·API</span> |
| 154 | </h2> | 154 | </h2> |
| 155 | <p>The·following·dialog·within·the·Erlang·shell·illustrates·the·functionality·of | 155 | <p>The·following·dialog·within·the·Erlang·shell·illustrates·the·functionality·of |
| 156 | the·Erlang·ODBC·interface.·The·table·used·in·the·example·does·not·have·any | 156 | the·Erlang·ODBC·interface.·The·table·used·in·the·example·does·not·have·any |
| 157 | relevance·to·anything·that·exist·in·reality,·it·is·just·a·simple·example.·The | 157 | relevance·to·anything·that·exist·in·reality,·it·is·just·a·simple·example.·The |
| 158 | example·was·created·using·<code·class="inline">sqlserver·7.0·with·servicepack·1</code>·as·database·and·the | 158 | example·was·created·using·<code·class="inline">sqlserver·7.0·with·servicepack·1</code>·as·database·and·the |
| 159 | ODBC·driver·for·<code·class="inline">sqlserver</code>·with·version·<code·class="inline">2000.80.194.00</code>.</p><pre><code·class="text">·1·>·odbc:start(). | 159 | ODBC·driver·for·<code·class="inline">sqlserver</code>·with·version·<code·class="inline">2000.80.194.00</code>.</p><pre><code·class="text">·1·>·odbc:start(). |
| 160 | ······ok</code></pre><p>Connect·to·the·database</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">2</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="p"·data-group-id=" | 160 | ······ok</code></pre><p>Connect·to·the·database</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">2</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="p"·data-group-id="2744530506-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ref</span><span·class="p"·data-group-id="2744530506-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·cla[·...·truncated·by·diffoscope;·len:·394,·SHA:·0b4405d1198e62bc1066c41b27a71b0fa30b2da97ae6b8abafe0570b0152d559·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 161 | ······</span><span·class="p"·data-group-id=" | 161 | ······</span><span·class="p"·data-group-id="2744530506-4">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.342</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="2744530506-4">}</span></code></pre><p>Create·a·table</p><pre><code·class="text">·3·>·odbc:sql_query(Ref,·"CREATE·TABLE·EMPLOYEE·(NR·integer, |
| 162 | ······FIRSTNAME··char·varying(20),·LASTNAME··char·varying(20),·GENDER·char(1), | 162 | ······FIRSTNAME··char·varying(20),·LASTNAME··char·varying(20),·GENDER·char(1), |
| 163 | ······PRIMARY·KEY(NR))"). | 163 | ······PRIMARY·KEY(NR))"). |
| 164 | ······{updated,undefined}</code></pre><p>Insert·some·data</p><pre><code·class="text">·4·>·odbc:sql_query(Ref,·"INSERT·INTO·EMPLOYEE·VALUES(1,·'Jane',·'Doe',·'F')"). | 164 | ······{updated,undefined}</code></pre><p>Insert·some·data</p><pre><code·class="text">·4·>·odbc:sql_query(Ref,·"INSERT·INTO·EMPLOYEE·VALUES(1,·'Jane',·'Doe',·'F')"). |
| 165 | ······{updated,1}</code></pre><p>Check·what·data·types·the·database·assigned·for·the·columns.·Hopefully·this·is | 165 | ······{updated,1}</code></pre><p>Check·what·data·types·the·database·assigned·for·the·columns.·Hopefully·this·is |
| 166 | not·a·surprise,·some·times·it·can·be!·These·are·the·data·types·that·you·should | 166 | not·a·surprise,·some·times·it·can·be!·These·are·the·data·types·that·you·should |
| 167 | use·if·you·want·to·do·a·parameterized·query.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">5</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="nc">odbc</span><span·class="p">:</span><span·class="nf">describe_table</span><span·class="p"·data-group-id=" | 167 | use·if·you·want·to·do·a·parameterized·query.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">5</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="nc">odbc</span><span·class="p">:</span><span·class="nf">describe_table</span><span·class="p"·data-group-id="4128316670-1">(</span><span·class="n">Ref</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"EMPLOYEE"</span><span·class="p"·data-group-id="4128316670-1">)</span><span·class="p">.</span><span·class="w"> |
| 168 | ······</span><span·class="p"·data-group-id=" | 168 | ······</span><span·class="p"·data-group-id="4128316670-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4128316670-3">[</span><span·class="p"·data-group-id="4128316670-4">{</span><span·class="s">"NR"</span><span·class="p">,[·...·truncated·by·diffoscope;·len:·107,·SHA:·7e568d28893a8715a7fa0516f9df8308f12bab3db8bc9b49de00507b68747d1f·...·]-4">}</span><span·class="p">,</span><span·class="w"> |
| 169 | ············</span><span·class="p"·data-group-id=" | 169 | ············</span><span·class="p"·data-group-id="4128316670-5">{</span><span·class="s">"FIRSTNAME"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4128316670-6">{</span><span·class="ss">sql_varchar</span><span·class="p">,</span><span·class="w">·</span><span·[·...·truncated·by·diffoscope;·len:·114,·SHA:·21e9eb006171ed646d8ed96d1b9d6090037405ac94840a98b6921edeece6db0e·...·]-5">}</span><span·class="p">,</span><span·class="w"> |
| 170 | ············</span><span·class="p"·data-group-id=" | 170 | ············</span><span·class="p"·data-group-id="4128316670-7">{</span><span·class="s">"LASTNAME"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4128316670-8">{</span><span·class="ss">sql_varchar</span><span·class="p">,</span><span·class="w">·</span><span·c[·...·truncated·by·diffoscope;·len:·113,·SHA:·072382db5a9b96d4a32dd6fb9a599011bf26375a58b23df9cf14db55dde87cb6·...·]-7">}</span><span·class="w"> |
| 171 | ············</span><span·class="p"·data-group-id=" | 171 | ············</span><span·class="p"·data-group-id="4128316670-9">{</span><span·class="s">"GENDER"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4128316670-10">{</span><span·class="ss">sql_char</span><span·class="p">,</span><span·class="w">·</span><span·class[·...·truncated·by·diffoscope;·len:·636,·SHA:·985ddecb12953b1b02b002c2a7e3c4e9ef03629610067446154e8f01096641b6·...·]-1">(</span><span·class="n">Ref</span><span·class="p">,</span><span·class="s">"INSERT·INTO·EMPLOYEE·(NR,·FIRSTNAME,·"</span><span·class="w"> |
| 172 | ··················</span><span·class="s">"LASTNAME,·GENDER)·VALUES(?,·?,·?,·?)"</span><span·class="p">,</span><span·class="w"> | 172 | ··················</span><span·class="s">"LASTNAME,·GENDER)·VALUES(?,·?,·?,·?)"</span><span·class="p">,</span><span·class="w"> |
| 173 | ···················</span><span·class="p"·data-group-id=" | 173 | ···················</span><span·class="p"·data-group-id="7487635714-2">[</span><span·class="p"·data-group-id="7487635714-3">{</span><span·class="ss">sql_integer</span><span·class="p">,</span><span·class="p"·data-group-id="7487635714-4">[</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</[·...·truncated·by·diffoscope;·len:·344,·SHA:·9a3d0e7607ba9d08e37c15a688ba30e2e480cb164b3d04fe30b0c9592efd5a33·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 174 | ····················</span><span·class="p"·data-group-id=" | 174 | ····················</span><span·class="p"·data-group-id="7487635714-5">{</span><span·class="p"·data-group-id="7487635714-6">{</span><span·class="ss">sql_varchar</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">20</span><span·class="p"·data-group-id="7487635714-6">}</span><span·class="p">,</span><span·class="w"> |
| 175 | ·····························</span><span·class="p"·data-group-id=" | 175 | ·····························</span><span·class="p"·data-group-id="7487635714-7">[</span><span·class="s">"John"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"Monica"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"Ross"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"Rachel"</span><span·class="p">,</span><span·class="w"> |
| 176 | ·····························</span><span·class="s">"Piper"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"Prue"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"Louise"</span><span·class="p"·data-group-id=" | 176 | ·····························</span><span·class="s">"Piper"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"Prue"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"Louise"</span><span·class="p"·data-group-id="7487635714-7">]</span><span·class="p"·data-group-id="7487635714-5">}</span><span·class="p">,</span><span·class="w"> |
| 177 | ···················</span><span·class="p"·data-group-id=" | 177 | ···················</span><span·class="p"·data-group-id="7487635714-8">{</span><span·class="p"·data-group-id="7487635714-9">{</span><span·class="ss">sql_varchar</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">20</span><span·class="p"·data-group-id="7487635714-9">}</span><span·class="p">,</span><span·class="w"> |
| 178 | ·····························</span><span·class="p"·data-group-id=" | 178 | ·····························</span><span·class="p"·data-group-id="7487635714-10">[</span><span·class="s">"Doe"</span><span·class="p">,</span><span·class="s">"Geller"</span><span·class="p">,</span><span·class="s">"Geller"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"Green"</span><span·class="p">,</span><span·class="w"> |
| 179 | ······························</span><span·class="s">"Halliwell"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"Halliwell"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"Lane"</span><span·class="p"·data-group-id=" | 179 | ······························</span><span·class="s">"Halliwell"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"Halliwell"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"Lane"</span><span·class="p"·data-group-id="7487635714-10">]</span><span·class="p"·data-group-id="7487635714-8">}</span><span·class="p">,</span><span·class="w"> |
| 180 | ···················</span><span·class="p"·data-group-id=" | 180 | ···················</span><span·class="p"·data-group-id="7487635714-11">{</span><span·class="p"·data-group-id="7487635714-12">{</span><span·class="ss">sql_char</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="7487635714-12">}</span><span·class="p">,</s[·...·truncated·by·diffoscope;·len:·680,·SHA:·f0170ae1bea8e629a3942274d4ded4f67aa5c2ffe34acb4fa3d0386ba33ff80e·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 181 | ······</span><span·class="p"·data-group-id=" | 181 | ······</span><span·class="p"·data-group-id="7487635714-14">{</span><span·class="ss">updated</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">7</span><span·class="p"·data-group-id="7487635714-14">}</span></code></pre><p>Fetch·all·data·in·the·table·employee</p><pre><code·class="m[·...·truncated·by·diffoscope;·len:·438,·SHA:·73732db63251bb574edcf0d7828d2894cd1735ac64f2dbfb702b35dd4eee48dd·...·]5-1">)</span><span·class="p">.</span><span·class="w"> |
| 182 | ····</span><span·class="p"·data-group-id=" | 182 | ····</span><span·class="p"·data-group-id="8547969235-2">{</span><span·class="ss">selected</span><span·class="p">,</span><span·class="p"·data-group-id="8547969235-3">[</span><span·class="s">"NR"</span><span·class="p">,</span><span·class="s">"FIRSTNAME"</span><span·class="p">,</s[·...·truncated·by·diffoscope;·len:·152,·SHA:·b4952778966a2bd8ba383d7bf512082ca9c8e64ada54f3d341ba5f30c35a6f7a·...·]5-3">]</span><span·class="p">,</span><span·class="w"> |
| 183 | ··········</span><span·class="p"·data-group-id=" | 183 | ··········</span><span·class="p"·data-group-id="8547969235-4">[</span><span·class="p"·data-group-id="8547969235-5">{</span><span·class="mi">1</span><span·class="p">,</span><span·class="s">"Jane"</span><span·class="p">,</span><span·class="s">"Doe"</span><span·class="p">,</span><span·c[·...·truncated·by·diffoscope;·len:·69,·SHA:·82c03bdc16ab0339e1ad09e132623981d9baf78637fe4231a06c7055668b3880·...·]5-5">}</span><span·class="p">,</span><span·class="w"> |
| 184 | ···········</span><span·class="p"·data-group-id=" | 184 | ···········</span><span·class="p"·data-group-id="8547969235-6">{</span><span·class="mi">2</span><span·class="p">,</span><span·class="s">"John"</span><span·class="p">,</span><span·class="s">"Doe"</span><span·class="p">,</span><span·class="s">"M"</span><span·class="p"·data-gro[·...·truncated·by·diffoscope;·len:·16,·SHA:·4eb1db106ecd01a98bbf1e3bf006ecf67a96aed452865823d2d3ed8f1cddedb2·...·]5-6">}</span><span·class="p">,</span><span·class="w"> |
| 185 | ···········</span><span·class="p"·data-group-id=" | 185 | ···········</span><span·class="p"·data-group-id="8547969235-7">{</span><span·class="mi">3</span><span·class="p">,</span><span·class="s">"Monica"</span><span·class="p">,</span><span·class="s">"Geller"</span><span·class="p">,</span><span·class="s">"F"</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·21,·SHA:·76b94b3fe1363cce7f4ff2daffc939cd4b778292a11bad73df64ed76841f1394·...·]5-7">}</span><span·class="p">,</span><span·class="w"> |
| 186 | ···········</span><span·class="p"·data-group-id=" | 186 | ···········</span><span·class="p"·data-group-id="8547969235-8">{</span><span·class="mi">4</span><span·class="p">,</span><span·class="s">"Ross"</span><span·class="p">,</span><span·class="s">"Geller"</span><span·class="p">,</span><span·class="s">"M"</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·19,·SHA:·86a1440bfeb8e08a474288caec9864c1682dd14a4accd804cf0b5d9212ea53ee·...·]5-8">}</span><span·class="p">,</span><span·class="w"> |
| 187 | ···········</span><span·class="p"·data-group-id=" | 187 | ···········</span><span·class="p"·data-group-id="8547969235-9">{</span><span·class="mi">5</span><span·class="p">,</span><span·class="s">"Rachel"</span><span·class="p">,</span><span·class="s">"Green"</span><span·class="p">,</span><span·class="s">"F"</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·20,·SHA:·dc22f4ca98247bf526ad692279424983a9f9afbef61e4c23a3cc54af3e9b317a·...·]5-9">}</span><span·class="p">,</span><span·class="w"> |
| 188 | ···········</span><span·class="p"·data-group-id=" | 188 | ···········</span><span·class="p"·data-group-id="8547969235-10">{</span><span·class="mi">6</span><span·class="p">,</span><span·class="s">"Piper"</span><span·class="p">,</span><span·class="s">"Halliwell"</span><span·class="p">,</span><span·class="s">"F"</span><span·class="p"·[·...·truncated·by·diffoscope;·len:·24,·SHA:·8ba5af6e534ca4d5ed1fc9773ac2ebe4cd2a810b3e0f8ce01c6c0ce614ad9a00·...·]5-10">}</span><span·class="p">,</span><span·class="w"> |
| 189 | ···········</span><span·class="p"·data-group-id=" | 189 | ···········</span><span·class="p"·data-group-id="8547969235-11">{</span><span·class="mi">7</span><span·class="p">,</span><span·class="s">"Prue"</span><span·class="p">,</span><span·class="s">"Halliwell"</span><span·class="p">,</span><span·class="s">"F"</span><span·class="p"·d[·...·truncated·by·diffoscope;·len:·23,·SHA:·c9cb9f7945184ea18ad919af8cd3025944b42c0fba54704fcff4a90abdc2f61c·...·]5-11">}</span><span·class="p">,</span><span·class="w"> |
| 190 | ···········</span><span·class="p"·data-group-id=" | 190 | ···········</span><span·class="p"·data-group-id="8547969235-12">{</span><span·class="mi">8</span><span·class="p">,</span><span·class="s">"Louise"</span><span·class="p">,</span><span·class="s">"Lane"</span><span·class="p">,</span><span·class="s">"F"</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·151,·SHA:·a2f5372a2fbf579c21a74cf42f49c77f55865cb3a6453798e9e51db968b7f0bd·...·]5-2">}</span></code></pre><p>Associate·a·result·set·containing·the·whole·table·<code·class="inline">EMPLOYEE</code>·to·the·connection. |
| 191 | The·number·of·rows·in·the·result·set·is·returned.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">8</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="nc">odbc</span><span·class="p">:</span><span·class="nf">select_count</span><span·class="p"·data-group-id="2 | 191 | The·number·of·rows·in·the·result·set·is·returned.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">8</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="nc">odbc</span><span·class="p">:</span><span·class="nf">select_count</span><span·class="p"·data-group-id="2017682668-1">(</span><span·class="n">Ref</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"SELECT·*·FROM·EMPLOYEE"</span><span·class="p"·data-group-id="2017682668-1">)</span><span·class="p">.</span><span·class="w"> |
| 192 | ······</span><span·class="p"·data-group-id="2 | 192 | ······</span><span·class="p"·data-group-id="2017682668-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="mi">8</span><span·class="p"·data-group-id="2017682668-2">}</span></code></pre><p>You·can·always·traverse·the·result·set·sequential·by·using·next</p><pre><code·class="makeup[·...·truncated·by·diffoscope;·len:·348,·SHA:·515122e4737f736ecc4c90cdd3c5870046ad0658c5ee88708776e18386948189·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 193 | ······</span><span·class="p"·data-group-id=" | 193 | ······</span><span·class="p"·data-group-id="1596612055-2">{</span><span·class="ss">selected</span><span·class="p">,</span><span·class="p"·data-group-id="1596612055-3">[</span><span·class="s">"NR"</span><span·class="p">,</span><span·class="s">"FIRSTNAME"</span><span·class="p">,</s[·...·truncated·by·diffoscope;·len:·1050,·SHA:·d9c9625e34baed2f7d940d889b38c415b4a87109edb3afe264e7bd6e9531f457·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 194 | ······</span><span·class="p"·data-group-id=" | 194 | ······</span><span·class="p"·data-group-id="1534147283-2">{</span><span·class="ss">selected</span><span·class="p">,</span><span·class="p"·data-group-id="1534147283-3">[</span><span·class="s">"NR"</span><span·class="p">,</span><span·class="s">"FIRSTNAME"</span><span·class="p">,</s[·...·truncated·by·diffoscope;·len:·652,·SHA:·4cd390888d729f35f9aa50f856bd9e60f9e9342a3d2223a1ed83d875cfa546a4·...·]-2">}</span></code></pre><p>If·your·driver·supports·scrollable·cursors·you·have·a·little·more·freedom,·and |
| 195 | can·do·things·like·this.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">11</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="nc">odbc</span><span·class="p">:</span><span·class="nf">last</span><span·class="p"·data-group-id=" | 195 | can·do·things·like·this.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">11</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="nc">odbc</span><span·class="p">:</span><span·class="nf">last</span><span·class="p"·data-group-id="0541497152-1">(</span><span·class="n">Ref</span><span·class="p"·data-group-id="0541497152-1">)</span><span·class="p">.</span><span·class="w"> |
| 196 | ······</span><span·class="p"·data-group-id="0541497152-2">{</span><span·class="ss">selected</span><span·class="p">,</span><span·class="p"·data-group-id="0541497152-3">[</span><span·class="s">"NR"</span><span·class="p">,</span><span·class="s">"FIRSTNAME"</span><span·class="p">,</span><span·class="s">"LASTNAME"</span><span·class="p">,</span><span·class="s">"GENDER"</span><span·class="p"·data-group-id="0541497152-3">]</span><span·class="p">,</span><span·class="p"·data-group-id="0541497152-4">[</span><span·class="p"·data-group-id="0541497152-5">{</span><span·class="mi">8</span><span·class="p">,</span><span·class="s">"Louise"</span><span·class="p">,</span><span·class="s">"Lane"</span><span·class="p">,</span><span·class="s">"F"</span><span·class="p"·data-group-id="0541497152-5">}</span><span·class="p"·data-group-id="0541497152-4">]</span><span·class="p"·data-group-id="0541497152-2">}</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">12</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="nc">odbc</span><span·class="p">:</span><span·class="nf">prev</span><span·class="p"·data-group-id="8328150212-1">(</span><span·class="n">Ref</span><span·class="p"·data-group-id="8328150212-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 197 | ······</span><span·class="p"·data-group-id="8328150212-2">{</span><span·class="ss">selected</span><span·class="p">,</span><span·class="p"·data-group-id="8328150212-3">[</span><span·class="s">"NR"</span><span·class="p">,</span><span·class="s">"FIRSTNAME"</span><span·class="p">,</span><span·class="s">"LASTNAME"</span><span·class="p">,</span><span·class="s">"GENDER"</span><span·class="p"·data-group-id="8328150212-3">]</span><span·class="p">,</span><span·class="p"·data-group-id="8328150212-4">[</span><span·class="p"·data-group-id="8328150212-5">{</span><span·class="mi">7</span><span·class="p">,</span><span·class="s">"Prue"</span><span·class="p">,</span><span·class="s">"Halliwell"</span><span·class="p">,</span><span·class="s">"F"</span><span·class="p"·data-group-id="8328150212-5">}</span><span·class="p"·data-group-id="8328150212-4">]</span><span·class="p"·data-group-id="8328150212-2">}</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">13</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="nc">odbc</span><span·class="p">:</span><span·class="nf">first</span><span·class="p"·data-group-id="4706389401-1">(</span><span·class="n">Ref</span><span·class="p"·data-group-id="4706389401-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 196 | ······</span><span·class="p"·data-group-id=" | 198 | ······</span><span·class="p"·data-group-id="4706389401-2">{</span><span·class="ss">selected</span><span·class="p">,</span><span·class="p"·data-group-id="4706389401-3">[</span><span·class="s">"NR"</span><span·class="p">,</span><span·class="s">"FIRSTNAME"</span><span·class="p">,</s[·...·truncated·by·diffoscope;·len:·1050,·SHA:·3c4d83290f570191f92ce2162e0f116975cc5ee6fef5a77921c4e21c2c5ea99e·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 197 | ······</span><span·class="p"·data-group-id="4371708012-2">{</span><span·class="ss">selected</span><span·class="p">,</span><span·class="p"·data-group-id="4371708012-3">[</span><span·class="s">"NR"</span><span·class="p">,</span><span·class="s">"FIRSTNAME"</span><span·class="p">,</span><span·class="s">"LASTNAME"</span><span·class="p">,</span><span·class="s">"GENDER"</span><span·class="p"·data-group-id="4371708012-3">]</span><span·class="p">,</span><span·class="p"·data-group-id="4371708012-4">[</span><span·class="p"·data-group-id="4371708012-5">{</span><span·class="mi">7</span><span·class="p">,</span><span·class="s">"Prue"</span><span·class="p">,</span><span·class="s">"Halliwell"</span><span·class="p">,</span><span·class="s">"F"</span><span·class="p"·data-group-id="4371708012-5">}</span><span·class="p"·data-group-id="4371708012-4">]</span><span·class="p"·data-group-id="4371708012-2">}</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">13</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="nc">odbc</span><span·class="p">:</span><span·class="nf">first</span><span·class="p"·data-group-id="4299646459-1">(</span><span·class="n">Ref</span><span·class="p"·data-group-id="4299646459-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 198 | ······</span><span·class="p"·data-group-id="4299646459-2">{</span><span·class="ss">selected</span><span·class="p">,</span><span·class="p"·data-group-id="4299646459-3">[</span><span·class="s">"NR"</span><span·class="p">,</span><span·class="s">"FIRSTNAME"</span><span·class="p">,</span><span·class="s">"LASTNAME"</span><span·class="p">,</span><span·class="s">"GENDER"</span><span·class="p"·data-group-id="4299646459-3">]</span><span·class="p">,</span><span·class="p"·data-group-id="4299646459-4">[</span><span·class="p"·data-group-id="4299646459-5">{</span><span·class="mi">1</span><span·class="p">,</span><span·class="s">"Jane"</span><span·class="p">,</span><span·class="s">"Doe"</span><span·class="p">,</span><span·class="s">"F"</span><span·class="p"·data-group-id="4299646459-5">}</span><span·class="p"·data-group-id="4299646459-4">]</span><span·class="p"·data-group-id="4299646459-2">}</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">14</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="nc">odbc</span><span·class="p">:</span><span·class="nf">next</span><span·class="p"·data-group-id="5652687510-1">(</span><span·class="n">Ref</span><span·class="p"·data-group-id="5652687510-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 199 | ······</span><span·class="p"·data-group-id=" | 199 | ······</span><span·class="p"·data-group-id="6143462591-2">{</span><span·class="ss">selected</span><span·class="p">,</span><span·class="p"·data-group-id="6143462591-3">[</span><span·class="s">"NR"</span><span·class="p">,</span><span·class="s">"FIRSTNAME"</span><span·class="p">,</s[·...·truncated·by·diffoscope;·len:·1318,·SHA:·b57a76ff5a12483150d7319f8c9c0a53adddc0afb84f163406934cbf58ace211·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 200 | ·····</span><span·class="p"·data-group-id="5 | 200 | ·····</span><span·class="p"·data-group-id="5466600205-2">{</span><span·class="ss">selected</span><span·class="p">,</span><span·class="p"·data-group-id="5466600205-3">[</span><span·class="s">"FIRSTNAME"</span><span·class="p">,</span><span·class="s">"NR"</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·20,·SHA:·d3fb2aa4c835a5b0ff3f62d0ae9c243f52ef8e91b5ae3e0027bead29da60b925·...·]-3">]</span><span·class="p">,</span><span·class="w"> |
| 201 | ··········</span><span·class="p"·data-group-id="5 | 201 | ··········</span><span·class="p"·data-group-id="5466600205-4">[</span><span·class="p"·data-group-id="5466600205-5">{</span><span·class="s">"Jane"</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="5466600205-5">}</span><span·class="p">,</span><span·class="w"> |
| 202 | ···········</span><span·class="p"·data-group-id="5 | 202 | ···········</span><span·class="p"·data-group-id="5466600205-6">{</span><span·class="s">"Monica"</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="5466600205-6">}</span><span·class="p">,</span><span·class="w"> |
| 203 | ···········</span><span·class="p"·data-group-id="5 | 203 | ···········</span><span·class="p"·data-group-id="5466600205-7">{</span><span·class="s">"Rachel"</span><span·class="p">,</span><span·class="mi">5</span><span·class="p"·data-group-id="5466600205-7">}</span><span·class="p">,</span><span·class="w"> |
| 204 | ···········</span><span·class="p"·data-group-id="5 | 204 | ···········</span><span·class="p"·data-group-id="5466600205-8">{</span><span·class="s">"Piper"</span><span·class="p">,</span><span·class="mi">6</span><span·class="p"·data-group-id="5466600205-8">}</span><span·class="p">,</span><span·class="w"> |
| 205 | ···········</span><span·class="p"·data-group-id="5 | 205 | ···········</span><span·class="p"·data-group-id="5466600205-9">{</span><span·class="s">"Prue"</span><span·class="p">,</span><span·class="mi">7</span><span·class="p"·data-group-id="5466600205-9">}</span><span·class="p">,</span><span·class="w"> |
| 206 | ···········</span><span·class="p"·data-group-id="5 | 206 | ···········</span><span·class="p"·data-group-id="5466600205-10">{</span><span·class="s">"Louise"</span><span·class="p">,</span><span·class="mi">8</span><span·class="p"·data-group-id="5466600205-10">}</span><span·class="p"·data-group-id="5466600205-4">]</span><span·class="p"·data-group-id="546660[·...·truncated·by·diffoscope;·len:·4,·SHA:·b7fbb9f14ca908bf20c16e78647d36945e254a3b494982890cffb2e58cbc3d95·...·]-2">}</span></code></pre><p>Fetch·the·fields·<code·class="inline">FIRSTNAME</code>and·<code·class="inline">NR</code>for·all·female·employees·and·sort·them·on |
| 207 | the·field·<code·class="inline">FIRSTNAME</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">16</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="nc">odbc</span><span·class="p">:</span><span·class="nf">sql_query</span><span·class="p"·data-group-id=" | 207 | the·field·<code·class="inline">FIRSTNAME</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">16</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="nc">odbc</span><span·class="p">:</span><span·class="nf">sql_query</span><span·class="p"·data-group-id="1075018892-1">(</span><span·class="n">Ref</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"SELECT·FIRSTNAME,·NR·FROM·EMPLOYEE·WHERE·GENDER·=·'F' |
| 208 | ······ORDER·BY·FIRSTNAME"</span><span·class="p"·data-group-id=" | 208 | ······ORDER·BY·FIRSTNAME"</span><span·class="p"·data-group-id="1075018892-1">)</span><span·class="p">.</span><span·class="w"> |
| 209 | ····</span><span·class="p"·data-group-id=" | 209 | ····</span><span·class="p"·data-group-id="1075018892-2">{</span><span·class="ss">selected</span><span·class="p">,</span><span·class="p"·data-group-id="1075018892-3">[</span><span·class="s">"FIRSTNAME"</span><span·class="p">,</span><span·class="s">"NR"</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·21,·SHA:·06505359e1aff13dbd8721e9c08a022c05fea7b48842057e8659882a5444da38·...·]-3">]</span><span·class="p">,</span><span·class="w"> |
| 210 | ··········</span><span·class="p"·data-group-id=" | 210 | ··········</span><span·class="p"·data-group-id="1075018892-4">[</span><span·class="p"·data-group-id="1075018892-5">{</span><span·class="s">"Jane"</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="1075018892-5">}</span><span·class="p">,</span><span·class="w"> |
| 211 | ···········</span><span·class="p"·data-group-id=" | 211 | ···········</span><span·class="p"·data-group-id="1075018892-6">{</span><span·class="s">"Louise"</span><span·class="p">,</span><span·class="mi">8</span><span·class="p"·data-group-id="1075018892-6">}</span><span·class="p">,</span><span·class="w"> |
| 212 | ···········</span><span·class="p"·data-group-id=" | 212 | ···········</span><span·class="p"·data-group-id="1075018892-7">{</span><span·class="s">"Monica"</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="1075018892-7">}</span><span·class="p">,</span><span·class="w"> |
| 213 | ···········</span><span·class="p"·data-group-id=" | 213 | ···········</span><span·class="p"·data-group-id="1075018892-8">{</span><span·class="s">"Piper"</span><span·class="p">,</span><span·class="mi">6</span><span·class="p"·data-group-id="1075018892-8">}</span><span·class="p">,</span><span·class="w"> |
| 214 | ···········</span><span·class="p"·data-group-id=" | 214 | ···········</span><span·class="p"·data-group-id="1075018892-9">{</span><span·class="s">"Prue"</span><span·class="p">,</span><span·class="mi">7</span><span·class="p"·data-group-id="1075018892-9">}</span><span·class="p">,</span><span·class="w"> |
| 215 | ···········</span><span·class="p"·data-group-id=" | 215 | ···········</span><span·class="p"·data-group-id="1075018892-10">{</span><span·class="s">"Rachel"</span><span·class="p">,</span><span·class="mi">5</span><span·class="p"·data-group-id="1075018892-10">}</span><span·class="p"·data-group-id="1075018892-4">]</span><span·class="p"·data-group-id="10750[·...·truncated·by·diffoscope;·len:·5,·SHA:·b6fca0cd22b2f02fe4b4abc7f133b48b3fb06e19089409b4228ac23bbc15b582·...·]-2">}</span></code></pre><p>Associate·a·result·set·that·contains·the·fields·<code·class="inline">FIRSTNAME</code>·and·<code·class="inline">NR</code>for·all |
| 216 | female·employees·to·the·connection.·The·number·of·rows·in·the·result·set·is | 216 | female·employees·to·the·connection.·The·number·of·rows·in·the·result·set·is |
| 217 | returned.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">17</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="nc">odbc</span><span·class="p">:</span><span·class="nf">select_count</span><span·class="p"·data-group-id=" | 217 | returned.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">17</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="nc">odbc</span><span·class="p">:</span><span·class="nf">select_count</span><span·class="p"·data-group-id="3312474966-1">(</span><span·class="n">Ref</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"SELECT·FIRSTNAME,·NR·FROM·EMPLOYEE·WHERE·GENDER·=·'F'"</span><span·class="p"·data-group-id="3312474966-1">)</span><span·class="p">.</span><span·class="w"> |
| 218 | ······</span><span·class="p"·data-group-id=" | 218 | ······</span><span·class="p"·data-group-id="3312474966-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="mi">6</span><span·class="p"·data-group-id="3312474966-2">}</span></code></pre><p>A·few·more·ways·of·retrieving·parts·of·the·result·set·when·the·driver·supports |
| 219 | scrollable·cursors.·Note·that·next·will·work·even·without·support·for·scrollable | 219 | scrollable·cursors.·Note·that·next·will·work·even·without·support·for·scrollable |
| 220 | cursors.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">18</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="nc">odbc</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id=" | 220 | cursors.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">18</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="nc">odbc</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id="9729013417-1">(</span><span·class="n">Ref</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9729013417-2">{</span><span·class="ss">relative</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">2</span><s[·...·truncated·by·diffoscope;·len:·165,·SHA:·c0d8e39f4a65d7acaee3ea4a19547ae95f131d5f835a61d7505be460a046c552·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 221 | ····</span><span·class="p"·data-group-id="9729013417-3">{</span><span·class="ss">selected</span><span·class="p">,</span><span·class="p"·data-group-id="9729013417-4">[</span><span·class="s">"FIRSTNAME"</span><span·class="p">,</span><span·class="s">"NR"</span><span·class="p"·data-group-id="9729013417-4">]</span><span·class="p">,</span><span·class="p"·data-group-id="9729013417-5">[</span><span·class="p"·data-group-id="9729013417-6">{</span><span·class="s">"Monica"</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="9729013417-6">}</span><span·class="p">,</span><span·class="p"·data-group-id="9729013417-7">{</span><span·class="s">"Rachel"</span><span·class="p">,</span><span·class="mi">5</span><span·class="p"·data-group-id="9729013417-7">}</span><span·class="p">,</span><span·class="p"·data-group-id="9729013417-8">{</span><span·class="s">"Piper"</span><span·class="p">,</span><span·class="mi">6</span><span·class="p"·data-group-id="9729013417-8">}</span><span·class="p"·data-group-id="9729013417-5">]</span><span·class="p"·data-group-id="9729013417-3">}</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">19</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="nc">odbc</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id="1129381636-1">(</span><span·class="n">Ref</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">next</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">2</span><span·class="p"·data-group-id="1129381636-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 221 | ····</span><span·class="p"·data-group-id="1498161643-3">{</span><span·class="ss">selected</span><span·class="p">,</span><span·class="p"·data-group-id="1498161643-4">[</span><span·class="s">"FIRSTNAME"</span><span·class="p">,</span><span·class="s">"NR"</span><span·class="p"·data-group-id="1498161643-4">]</span><span·class="p">,</span><span·class="p"·data-group-id="1498161643-5">[</span><span·class="p"·data-group-id="1498161643-6">{</span><span·class="s">"Monica"</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="1498161643-6">}</span><span·class="p">,</span><span·class="p"·data-group-id="1498161643-7">{</span><span·class="s">"Rachel"</span><span·class="p">,</span><span·class="mi">5</span><span·class="p"·data-group-id="1498161643-7">}</span><span·class="p">,</span><span·class="p"·data-group-id="1498161643-8">{</span><span·class="s">"Piper"</span><span·class="p">,</span><span·class="mi">6</span><span·class="p"·data-group-id="1498161643-8">}</span><span·class="p"·data-group-id="1498161643-5">]</span><span·class="p"·data-group-id="1498161643-3">}</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">19</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="nc">odbc</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id="8143980269-1">(</span><span·class="n">Ref</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">next</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">2</span><span·class="p"·data-group-id="8143980269-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 222 | ······</span><span·class="p"·data-group-id="8143980269-2">{</span><span·class="ss">selected</span><span·class="p">,</span><span·class="p"·data-group-id="8143980269-3">[</span><span·class="s">"FIRSTNAME"</span><span·class="p">,</span><span·class="s">"NR"</span><span·class="p"·data-group-id="8143980269-3">]</span><span·class="p">,</span><span·class="p"·data-group-id="8143980269-4">[</span><span·class="p"·data-group-id="8143980269-5">{</span><span·class="s">"Prue"</span><span·class="p">,</span><span·class="mi">7</span><span·class="p"·data-group-id="8143980269-5">}</span><span·class="p">,</span><span·class="p"·data-group-id="8143980269-6">{</span><span·class="s">"Louise"</span><span·class="p">,</span><span·class="mi">8</span><span·class="p"·data-group-id="8143980269-6">}</span><span·class="p"·data-group-id="8143980269-4">]</span><span·class="p"·data-group-id="8143980269-2">}</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">20</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="nc">odbc</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id="7479266962-1">(</span><span·class="n">Ref</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7479266962-2">{</span><span·class="ss">absolute</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="7479266962-2">}</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">2</span><span·class="p"·data-group-id="7479266962-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 223 | ······</span><span·class="p"·data-group-id="7479266962-3">{</span><span·class="ss">selected</span><span·class="p">,</span><span·class="p"·data-group-id="7479266962-4">[</span><span·class="s">"FIRSTNAME"</span><span·class="p">,</span><span·class="s">"NR"</span><span·class="p"·data-group-id="7479266962-4">]</span><span·class="p">,</span><span·class="p"·data-group-id="7479266962-5">[</span><span·class="p"·data-group-id="7479266962-6">{</span><span·class="s">"Jane"</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="7479266962-6">}</span><span·class="p">,</span><span·class="p"·data-group-id="7479266962-7">{</span><span·class="s">"Monica"</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="7479266962-7">}</span><span·class="p"·data-group-id="7479266962-5">]</span><span·class="p"·data-group-id="7479266962-3">}</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">21</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="nc">odbc</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id="3018788044-1">(</span><span·class="n">Ref</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">next</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">2</span><span·class="p"·data-group-id="3018788044-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 224 | ····</span><span·class="p"·data-group-id=" | 222 | ······</span><span·class="p"·data-group-id="1129381636-2">{</span><span·class="ss">selected</span><span·class="p">,</span><span·class="p"·data-group-id="1129381636-3">[</span><span·class="s">"FIRSTNAME"</span><span·class="p">,</span><span·class="s">&[·...·truncated·by·diffoscope;·len:·1390,·SHA:·2d320f51bcd2b4b82b15d2eacd2ddfef71137de7207519841244249c505da7d7·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 223 | ······</span><span·class="p"·data-group-id="4743271878-3">{</span><span·class="ss">selected</span><span·class="p">,</span><span·class="p"·data-group-id="4743271878-4">[</span><span·class="s">"FIRSTNAME"</span><span·class="p">,</span><span·class="s">"NR"</span><span·class="p"·data-group-id="4743271878-4">]</span><span·class="p">,</span><span·class="p"·data-group-id="4743271878-5">[</span><span·class="p"·data-group-id="4743271878-6">{</span><span·class="s">"Jane"</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="4743271878-6">}</span><span·class="p">,</span><span·class="p"·data-group-id="4743271878-7">{</span><span·class="s">"Monica"</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="4743271878-7">}</span><span·class="p"·data-group-id="4743271878-5">]</span><span·class="p"·data-group-id="4743271878-3">}</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">21</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="nc">odbc</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id="5748766942-1">(</span><span·class="n">Ref</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">next</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">2</span><span·class="p"·data-group-id="5748766942-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 224 | ····</span><span·class="p"·data-group-id="5748766942-2">{</span><span·class="ss">selected</span><span·class="p">,</span><span·class="p"·data-group-id="5748766942-3">[</span><span·class="s">"FIRSTNAME"</span><span·class="p">,</span><span·class="s">"NR"</span><span·class="p"·data-group-id="5748766942-3">]</span><span·class="p">,</span><span·class="p"·data-group-id="5748766942-4">[</span><span·class="p"·data-group-id="5748766942-5">{</span><span·class="s">"Rachel"</span><span·class="p">,</span><span·class="mi">5</span><span·class="p"·data-group-id="5748766942-5">}</span><span·class="p">,</span><span·class="p"·data-group-id="5748766942-6">{</span><span·class="s">"Piper"</span><span·class="p">,</span><span·class="mi">6</span><span·class="p"·data-group-id="5748766942-6">}</span><span·class="p"·data-group-id="5748766942-4">]</span><span·class="p"·data-group-id="5748766942-2">}</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">22</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="nc">odbc</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id="5712980819-1">(</span><span·class="n">Ref</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5712980819-2">{</span><span·class="ss">absolute</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="5712980819-2">}</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">4</span><span·class="p"·data-group-id="5712980819-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 225 | ······</span><span·class="p"·data-group-id=" | 225 | ······</span><span·class="p"·data-group-id="5712980819-3">{</span><span·class="ss">selected</span><span·class="p">,</span><span·class="p"·data-group-id="5712980819-4">[</span><span·class="s">"FIRSTNAME"</span><span·class="p">,</span><span·class="s">"NR"</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·19,·SHA:·c72693b3d4d7849acc2ff1b18c8cb9d60071667ae2d6ae17a045765850fa5689·...·]19-4">]</span><span·class="p">,</span><span·class="w"> |
| 226 | ················</span><span·class="p"·data-group-id=" | 226 | ················</span><span·class="p"·data-group-id="5712980819-5">[</span><span·class="p"·data-group-id="5712980819-6">{</span><span·class="s">"Jane"</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="5712980819-6">}</span><span·class="p">,</span><span·class="p"·[·...·truncated·by·diffoscope;·len:·1082,·SHA:·08c40c30e1f92d4777bb5aec3aa96918d5989bd0a59f20f7b6c167334d8ae183·...·]-1">(</span><span·class="n">Ref</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"SELECT·*·FROM·EMPLOYEE·WHERE·GENDER=?"</span><span·class="p">,</span><span·class="w"> |
| 227 | ······</span><span·class="p"·data-group-id=" | 227 | ······</span><span·class="p"·data-group-id="0482659836-2">[</span><span·class="p"·data-group-id="0482659836-3">{</span><span·class="p"·data-group-id="0482659836-4">{</span><span·class="ss">sql_char</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·367,·SHA:·372316e2e2d4ce1dc3f805cbb657dd39f4bd4d6a67836433da6abeec892a10c0·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 228 | ······</span><span·class="p"·data-group-id=" | 228 | ······</span><span·class="p"·data-group-id="0482659836-6">{</span><span·class="ss">selected</span><span·class="p">,</span><span·class="p"·data-group-id="0482659836-7">[</span><span·class="s">"NR"</span><span·class="p">,</span><span·class="s">"FIRSTNAME"</span><span·class="p">,</s[·...·truncated·by·diffoscope;·len:·153,·SHA:·5c092888dde07e5bf41d8fdf220b8328e8249729abf6319417bd87fa247a0860·...·]-7">]</span><span·class="p">,</span><span·class="w"> |
| 229 | ················</span><span·class="p"·data-group-id=" | 229 | ················</span><span·class="p"·data-group-id="0482659836-8">[</span><span·class="p"·data-group-id="0482659836-9">{</span><span·class="mi">2</span><span·class="p">,</span><span·class="s">"John"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"Doe"</span><span·c[·...·truncated·by·diffoscope;·len:·569,·SHA:·ec9e7f09069c71b773348594ca197c18989ff608cfcbe1837cede5061a57bdf1·...·]-6">}</span></code></pre><p>Delete·the·table·<code·class="inline">EMPLOYEE</code>.</p><pre><code·class="text">·24·>·odbc:sql_query(Ref,·"DROP·TABLE·EMPLOYEE"). |
| 230 | ······{updated,undefined}</code></pre><p>Shut·down·the·connection.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">25</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="nc">odbc</span><span·class="p">:</span><span·class="nf">disconnect</span><span·class="p"·data-group-id=" | 230 | ······{updated,undefined}</code></pre><p>Shut·down·the·connection.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">25</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="nc">odbc</span><span·class="p">:</span><span·class="nf">disconnect</span><span·class="p"·data-group-id="8634749055-1">(</span><span·class="n">Ref</span><span·class="p"·data-group-id="8634749055-1">)</span><span·class="p">.</span><span·class="w"> |
| 231 | ······</span><span·class="ss">ok</span></code></pre><p>Shut·down·the·application.</p><pre><code·class="text">·26·>·odbc:stop(). | 231 | ······</span><span·class="ss">ok</span></code></pre><p>Shut·down·the·application.</p><pre><code·class="text">·26·>·odbc:stop(). |
| 232 | ····=INFO·REPORT====·7-Jan-2004::17:00:59·=== | 232 | ····=INFO·REPORT====·7-Jan-2004::17:00:59·=== |
| 233 | ····application:·odbc | 233 | ····application:·odbc |
| 234 | ····exited:·stopped | 234 | ····exited:·stopped |
| 235 | ····type:·temporary | 235 | ····type:·temporary |
| 236 | ····ok</code></pre> | 236 | ····ok</code></pre> |
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| 25 | index.html | 25 | index.html |
| 26 | memsup.html | 26 | memsup.html |
| 27 | notes.html | 27 | notes.html |
| 28 | nteventlog.html | 28 | nteventlog.html |
| 29 | os_mon_app.html | 29 | os_mon_app.html |
| 30 | os_sup.html | 30 | os_sup.html |
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| 8 | ?rw-r--r--··6.1·unx·····1225·bx·defN·25-Mar-18·0 | 8 | ?rw-r--r--··6.1·unx·····1225·bx·defN·25-Mar-18·08:50·OEBPS/nav.xhtml |
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| 11 | ?rw-r--r--··6.1·unx······499·bx·defN·25-Mar-18·0 | 11 | ?rw-r--r--··6.1·unx······499·bx·defN·25-Mar-18·08:50·OEBPS/dist/epub-LSJCIYTM.js |
| 12 | ?rw-r--r--··6.1·unx····18738·bx·defN·25-Mar-18·0 | 12 | ?rw-r--r--··6.1·unx····18738·bx·defN·25-Mar-18·08:50·OEBPS/disksup.xhtml |
| 13 | ?rw-r--r--··6.1·unx····22574·bx·defN·25-Mar-18·0 | 13 | ?rw-r--r--··6.1·unx····22574·bx·defN·25-Mar-18·08:50·OEBPS/cpu_sup.xhtml |
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| 15 | ?rw-r--r--··6.1·unx·····5837·bx·defN·25-Mar-18·0 | 15 | ?rw-r--r--··6.1·unx·····5837·bx·defN·25-Mar-18·08:50·OEBPS/assets/logo.png |
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| 17 | ?rw-r--r--··6.1·unx······162·bx·defN·25-Mar-18·0 | 17 | ?rw-r--r--··6.1·unx······162·bx·defN·25-Mar-18·08:50·META-INF/com.apple.ibooks.display-options.xml |
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| 118 | <div·id="search"> | 118 | <div·id="search"> |
| 119 | ··<h1> | 119 | ··<h1> |
| 120 | ····<span></span> | 120 | ····<span></span> |
| 121 | ··</h1> | 121 | ··</h1> |
| 122 | ··<div·class="loading"><div></div><div></div><div></div><div></div></div> | 122 | ··<div·class="loading"><div></div><div></div><div></div><div></div></div> |
| 123 | </div> | 123 | </div> |
| 124 | <script·src="dist/search_data- | 124 | <script·src="dist/search_data-D20C2403.js"></script> |
| 125 | ····<footer·class="footer"> | 125 | ····<footer·class="footer"> |
| 126 | ······<p> | 126 | ······<p> |
| 127 | ········<span·class="line"> | 127 | ········<span·class="line"> |
| 128 | ··········<button·class="a-main·footer-button·display-quick-switch"·title="Search·HexDocs·packages"> | 128 | ··········<button·class="a-main·footer-button·display-quick-switch"·title="Search·HexDocs·packages"> |
| 129 | ············Search·HexDocs | 129 | ············Search·HexDocs |
| 130 | ··········</button> | 130 | ··········</button> |
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| 169 | <code·class="inline">error_location</code>·is·set·to·<code·class="inline">line</code>).</p></li></ul><p>The·code·must·return:</p><ul><li><p><strong><code·class="inline">{token,Token}</code></strong>·-·Return·<code·class="inline">Token</code>·to·the·caller.</p></li><li><p><strong><code·class="inline">{end_token,Token}</code></strong>·-·Return·<code·class="inline">Token</code>·and·is·last·token·in·a·tokens·call.</p></li><li><p><strong><code·class="inline">skip_token</code></strong>·-·Skip·this·token·completely.</p></li><li><p><strong><code·class="inline">{error,ErrString}</code></strong>·-·An·error·in·the·token,·<code·class="inline">ErrString</code>·is·a·string | 169 | <code·class="inline">error_location</code>·is·set·to·<code·class="inline">line</code>).</p></li></ul><p>The·code·must·return:</p><ul><li><p><strong><code·class="inline">{token,Token}</code></strong>·-·Return·<code·class="inline">Token</code>·to·the·caller.</p></li><li><p><strong><code·class="inline">{end_token,Token}</code></strong>·-·Return·<code·class="inline">Token</code>·and·is·last·token·in·a·tokens·call.</p></li><li><p><strong><code·class="inline">skip_token</code></strong>·-·Skip·this·token·completely.</p></li><li><p><strong><code·class="inline">{error,ErrString}</code></strong>·-·An·error·in·the·token,·<code·class="inline">ErrString</code>·is·a·string |
| 170 | describing·the·error.</p></li></ul><p>It·is·also·possible·to·push·back·characters·into·the·input·characters·with·the | 170 | describing·the·error.</p></li></ul><p>It·is·also·possible·to·push·back·characters·into·the·input·characters·with·the |
| 171 | following·returns:</p><ul><li><code·class="inline">{token,Token,PushBackList}</code></li><li><code·class="inline">{end_token,Token,PushBackList}</code></li><li><code·class="inline">{skip_token,PushBackList}</code></li></ul><p>These·have·the·same·meanings·as·the·normal·returns·but·the·characters·in | 171 | following·returns:</p><ul><li><code·class="inline">{token,Token,PushBackList}</code></li><li><code·class="inline">{end_token,Token,PushBackList}</code></li><li><code·class="inline">{skip_token,PushBackList}</code></li></ul><p>These·have·the·same·meanings·as·the·normal·returns·but·the·characters·in |
| 172 | <code·class="inline">PushBackList</code>·will·be·prepended·to·the·input·characters·and·scanned·for·the | 172 | <code·class="inline">PushBackList</code>·will·be·prepended·to·the·input·characters·and·scanned·for·the |
| 173 | next·token.·Note·that·pushing·back·a·newline·will·mean·the·line·numbering·will | 173 | next·token.·Note·that·pushing·back·a·newline·will·mean·the·line·numbering·will |
| 174 | no·longer·be·correct.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Pushing·back·characters·gives·you·unexpected·possibilities·to·cause·the | 174 | no·longer·be·correct.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Pushing·back·characters·gives·you·unexpected·possibilities·to·cause·the |
| 175 | scanner·to·loop!</p></section><p>The·following·example·would·match·a·simple·Erlang·integer·or·float·and·return·a | 175 | scanner·to·loop!</p></section><p>The·following·example·would·match·a·simple·Erlang·integer·or·float·and·return·a |
| 176 | token·which·could·be·sent·to·the·Erlang·parser:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">D</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 176 | token·which·could·be·sent·to·the·Erlang·parser:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">D</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="3516083172-1">[</span><span·class="mi">0</span><span·class="o">-</span><span·class="mi">9</span><span·class="p"·data-group-id="3516083172-1">]</span><span·class="w"> |
| 177 | </span><span·class="p"·data-group-id=" | 177 | </span><span·class="p"·data-group-id="3516083172-2">{</span><span·class="n">D</span><span·class="p"·data-group-id="3516083172-2">}</span><span·class="o">+</span><span·class="w">·</span><span·class="p">:</span><span·class="w"> |
| 178 | ··</span><span·class="p"·data-group-id=" | 178 | ··</span><span·class="p"·data-group-id="3516083172-3">{</span><span·class="ss">token</span><span·class="p">,</span><span·class="p"·data-group-id="3516083172-4">{</span><span·class="ss">integer</span><span·class="p">,</span><span·class="n">TokenLine</span><span·class="p">,</span><span·class="nf">[·...·truncated·by·diffoscope;·len:·255,·SHA:·efa289a71425bfc9afcd35e589a66780d2fe6939bcffc5753af0e2c5c0e8ad3d·...·]-3">}</span><span·class="p">.</span><span·class="w"> |
| 179 | </span><span·class="p"·data-group-id="8993471550-6">{</span><span·class="n">D</span><span·class="p"·data-group-id="8993471550-6">}</span><span·class="o">+</span><span·class="err">\</span><span·class="p">.</span><span·class="p"·data-group-id="8993471550-7">{</span><span·class="n">D</span><span·class="p"·data-group-id="8993471550-7">}</span><span·class="o">+</span><span·class="p"·data-group-id="8993471550-8">(</span><span·class="p"·data-group-id="8993471550-9">(</span><span·class="n">E</span><span·class="p">|</span><span·class="ss">e</span><span·class="p"·data-group-id="8993471550-9">)</span><span·class="p"·data-group-id="8993471550-10">(</span><span·class="err">\</span><span·class="o">+</span><span·class="p">|</span><span·class="err">\</span><span·class="o">-</span><span·class="p"·data-group-id="8993471550-10">)</span><span·class="o">?</span><span·class="p"·data-group-id="8993471550-11">{</span><span·class="n">D</span><span·class="p"·data-group-id="8993471550-11">}</span><span·class="o">+</span><span·class="p"·data-group-id="8993471550-8">)</span><span·class="o">?</span><span·class="w">·</span><span·class="p">:</span><span·class="w"> | ||
| 180 | 179 | </span><span·class="p"·data-group-id="3516083172-6">{</span><span·class="n">D</span><span·class="p"·data-group-id="3516083172-6">}</span><span·class="o">+</span><span·class="err">\</span><span·class="p">.</span><span·class="p"·data-group-id="3516083172-7">[·...·truncated·by·diffoscope;·len:·894,·SHA:·1382ff9254c0898c7c4e668c79f02e22a5013aba2f09db5289c983377948404f·...·] | |
| 180 | ··</span><span·class="p"·data-group-id="3516083172-12">{</span><span·class="ss">token</span><span·class="p">,</span><span·class="p"·data-group-id="3516083172-13">{</span><span·class="nb">float</span><span·class="p">,</span><span·class="n">TokenLine</span><span·class="p">,</span><span·class="nf">list_to_float</span><span·class="p"·data-group-id="3516083172-14">(</span><span·class="n">TokenChars</span><span·class="p"·data-group-id="3516083172-14">)</span><span·class="p"·data-group-id="3516083172-13">}</span><span·class="p"·data-group-id="3516083172-12">}</span><span·class="p">.</span></code></pre><p>The·Erlang·code·in·the·<code·class="inline">Erlang·code.</code>·section·is·written·into·the·output·file | ||
| 181 | directly·after·the·module·declaration·and·predefined·exports·declaration,·making | 181 | directly·after·the·module·declaration·and·predefined·exports·declaration,·making |
| 182 | it·possible·to·add·extra·exports,·define·imports,·and·other·attributes,·which·are | 182 | it·possible·to·add·extra·exports,·define·imports,·and·other·attributes,·which·are |
| 183 | visible·in·the·whole·file.</p><h2·id="module-regular-expressions"·class="section-heading"> | 183 | visible·in·the·whole·file.</p><h2·id="module-regular-expressions"·class="section-heading"> |
| 184 | ··<a·href="#module-regular-expressions"·class="hover-link"> | 184 | ··<a·href="#module-regular-expressions"·class="hover-link"> |
| 185 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 185 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 186 | ··</a> | 186 | ··</a> |
| 187 | ··<span·class="text">Regular·Expressions</span> | 187 | ··<span·class="text">Regular·Expressions</span> |
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| 707 | <p>This·is·a·re-entrant·call·to·try·and·scan·a·single·token·from·<code·class="inline">Chars</code>.</p><p>If·there·are·enough·characters·in·<code·class="inline">Chars</code>·to·either·scan·a·token·or | 707 | <p>This·is·a·re-entrant·call·to·try·and·scan·a·single·token·from·<code·class="inline">Chars</code>.</p><p>If·there·are·enough·characters·in·<code·class="inline">Chars</code>·to·either·scan·a·token·or |
| 708 | detect·an·error·then·this·will·be·returned·with | 708 | detect·an·error·then·this·will·be·returned·with |
| 709 | <code·class="inline">{done,...}</code>.·Otherwise·<code·class="inline">{cont,Cont}</code>·will·be·returned·where·<code·class="inline">Cont</code>·is | 709 | <code·class="inline">{done,...}</code>.·Otherwise·<code·class="inline">{cont,Cont}</code>·will·be·returned·where·<code·class="inline">Cont</code>·is |
| 710 | used·in·the·next·call·to·<code·class="inline">token()</code>·with·more·characters·to·try·an·scan | 710 | used·in·the·next·call·to·<code·class="inline">token()</code>·with·more·characters·to·try·an·scan |
| 711 | the·token.·This·is·continued·until·a·token·has·been·scanned.·<code·class="inline">Cont</code>·is | 711 | the·token.·This·is·continued·until·a·token·has·been·scanned.·<code·class="inline">Cont</code>·is |
| 712 | initially·<code·class="inline">[]</code>.</p><p>It·is·not·designed·to·be·called·directly·by·an·application,·but·is | 712 | initially·<code·class="inline">[]</code>.</p><p>It·is·not·designed·to·be·called·directly·by·an·application,·but·is |
| 713 | used·through·the·I/O·system·where·it·can·typically·be·called·in·an | 713 | used·through·the·I/O·system·where·it·can·typically·be·called·in·an |
| 714 | application·by:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">io</span><span·class="p">:</span><span·class="nf">request</span><span·class="p"·data-group-id=" | 714 | application·by:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">io</span><span·class="p">:</span><span·class="nf">request</span><span·class="p"·data-group-id="2932579591-1">(</span><span·class="n">InFile</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2932579591-2">{</span><span·class="ss">get_until</span><span·class="p">,</span><span·class="ss">unicode</span><span·class="p">[·...·truncated·by·diffoscope;·len:·393,·SHA:·7367f35f6ab5f06ec1b4f49566e2d225e12e323268c4e284436c496e9814855e·...·]-1">)</span><span·class="w"> |
| 715 | ··</span><span·class="p">-></span><span·class="w">·</span><span·class="n">TokenRet</span></code></pre> | 715 | ··</span><span·class="p">-></span><span·class="w">·</span><span·class="n">TokenRet</span></code></pre> |
| 716 | ··</section> | 716 | ··</section> |
| 717 | </section> | 717 | </section> |
| 718 | <section·class="detail"·id="tokens/2"> | 718 | <section·class="detail"·id="tokens/2"> |
| 719 | ··<div·class="detail-header"> | 719 | ··<div·class="detail-header"> |
| 720 | ····<a·href="#tokens/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 720 | ····<a·href="#tokens/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
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| 792 | scan·the·tokens.·This·is·continued·until·all·tokens·have·been | 792 | scan·the·tokens.·This·is·continued·until·all·tokens·have·been |
| 793 | scanned.·<code·class="inline">Cont</code>·is·initially·<code·class="inline">[]</code>.</p><p>This·functions·differs·from·<code·class="inline">token</code>·in·that·it·will·continue·to·scan·tokens·up | 793 | scanned.·<code·class="inline">Cont</code>·is·initially·<code·class="inline">[]</code>.</p><p>This·functions·differs·from·<code·class="inline">token</code>·in·that·it·will·continue·to·scan·tokens·up |
| 794 | to·and·including·an·<code·class="inline">{end_token,Token}</code>·has·been·scanned·(see·next·section).·It | 794 | to·and·including·an·<code·class="inline">{end_token,Token}</code>·has·been·scanned·(see·next·section).·It |
| 795 | will·then·return·all·the·tokens.·This·is·typically·used·for·scanning·grammars | 795 | will·then·return·all·the·tokens.·This·is·typically·used·for·scanning·grammars |
| 796 | like·Erlang·where·there·is·an·explicit·end·token,·<code·class="inline">'.'</code>.·If·no·end·token·is | 796 | like·Erlang·where·there·is·an·explicit·end·token,·<code·class="inline">'.'</code>.·If·no·end·token·is |
| 797 | found·then·the·whole·file·will·be·scanned·and·returned.·If·an·error·occurs·then | 797 | found·then·the·whole·file·will·be·scanned·and·returned.·If·an·error·occurs·then |
| 798 | all·tokens·up·to·and·including·the·next·end·token·will·be·skipped.</p><p>It·is·not·designed·to·be·called·directly·by·an·application,·but·used·through·the | 798 | all·tokens·up·to·and·including·the·next·end·token·will·be·skipped.</p><p>It·is·not·designed·to·be·called·directly·by·an·application,·but·used·through·the |
| 799 | I/O·system·where·it·can·typically·be·called·in·an·application·by:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">io</span><span·class="p">:</span><span·class="nf">request</span><span·class="p"·data-group-id=" | 799 | I/O·system·where·it·can·typically·be·called·in·an·application·by:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">io</span><span·class="p">:</span><span·class="nf">request</span><span·class="p"·data-group-id="9801228498-1">(</span><span·class="n">InFile</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9801228498-2">{</span><span·class="ss">get_until</span><span·class="p">,</span><span·class="ss">unicode</span><span·class="p">[·...·truncated·by·diffoscope;·len:·394,·SHA:·9c025cd3332f8b0022b1244f4d89a0e5f47f94cc3fb332a90e13f815c8e6ea26·...·]-1">)</span><span·class="w"> |
| 800 | ··</span><span·class="p">-></span><span·class="w">·</span><span·class="n">TokensRet</span></code></pre> | 800 | ··</span><span·class="p">-></span><span·class="w">·</span><span·class="n">TokensRet</span></code></pre> |
| 801 | ··</section> | 801 | ··</section> |
| 802 | </section> | 802 | </section> |
| 803 | ····</div> | 803 | ····</div> |
| 804 | ··</section> | 804 | ··</section> |
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| 158 | <code·class="inline">{Category,·Position,·Symbol}</code>.</p><p>If·a·terminal·symbol·is·the·only·member·of·a·category,·and·the·symbol·name·is | 158 | <code·class="inline">{Category,·Position,·Symbol}</code>.</p><p>If·a·terminal·symbol·is·the·only·member·of·a·category,·and·the·symbol·name·is |
| 159 | identical·to·the·category·name,·the·token·format·can·be·<code·class="inline">{Symbol,·Position}</code>.</p><p>A·list·of·tokens·produced·by·the·scanner·should·end·with·a·special | 159 | identical·to·the·category·name,·the·token·format·can·be·<code·class="inline">{Symbol,·Position}</code>.</p><p>A·list·of·tokens·produced·by·the·scanner·should·end·with·a·special |
| 160 | <code·class="inline">end_of_input</code>·tuple·which·the·parser·is·looking·for.·The·format·of·this·tuple | 160 | <code·class="inline">end_of_input</code>·tuple·which·the·parser·is·looking·for.·The·format·of·this·tuple |
| 161 | should·be·<code·class="inline">{Endsymbol,·EndPosition}</code>,·where·<code·class="inline">Endsymbol</code>·is·an·identifier·that·is | 161 | should·be·<code·class="inline">{Endsymbol,·EndPosition}</code>,·where·<code·class="inline">Endsymbol</code>·is·an·identifier·that·is |
| 162 | distinguished·from·all·the·terminal·and·non-terminal·categories·of·the·syntax | 162 | distinguished·from·all·the·terminal·and·non-terminal·categories·of·the·syntax |
| 163 | rules.·The·<code·class="inline">Endsymbol</code>·can·be·declared·in·the·grammar·file.</p><p>The·simplest·case·is·to·segment·the·input·string·into·a·list·of·identifiers | 163 | rules.·The·<code·class="inline">Endsymbol</code>·can·be·declared·in·the·grammar·file.</p><p>The·simplest·case·is·to·segment·the·input·string·into·a·list·of·identifiers |
| 164 | (atoms)·and·use·those·atoms·both·as·categories·and·values·of·the·tokens.·For | 164 | (atoms)·and·use·those·atoms·both·as·categories·and·values·of·the·tokens.·For |
| 165 | example,·the·input·string·<code·class="inline">aaa·bbb·777,·X</code>·may·be·scanned·(tokenized)·as:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 165 | example,·the·input·string·<code·class="inline">aaa·bbb·777,·X</code>·may·be·scanned·(tokenized)·as:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="2806469004-1">[</span><span·class="p"·data-group-id="2806469004-2">{</span><span·class="ss">aaa</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="2806469004-2">}</span><span·class="p">,</span><spa[·...·truncated·by·diffoscope;·len:·1016,·SHA:·909cd8c44222fb9e7003fedddf6a341591ff561095e631800b5c605629d44345·...·]-6">}</span><span·class="p">,</span><span·class="w"> |
| 166 | ·</span><span·class="p"·data-group-id=" | 166 | ·</span><span·class="p"·data-group-id="2806469004-7">{</span><span·class="ss">'$end'</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="2806469004-7">}</span><span·class="p"·data-group-id="2806469004-1">]</span><span·class="p">.</span></code></pre><p>This·assumes·that·this·is·the·first·line·of·the·input·text,·and·that·<code·class="inline">'$end'</code>·is |
| 167 | the·distinguished·<code·class="inline">end_of_input</code>·symbol.</p><p>The·Erlang·scanner·in·the·<code·class="inline">io</code>·module·can·be·used·as·a·starting·point·when | 167 | the·distinguished·<code·class="inline">end_of_input</code>·symbol.</p><p>The·Erlang·scanner·in·the·<code·class="inline">io</code>·module·can·be·used·as·a·starting·point·when |
| 168 | writing·a·new·scanner.·Study·<code·class="inline">yeccscan.erl</code>·in·order·to·see·how·a·filter·can·be | 168 | writing·a·new·scanner.·Study·<code·class="inline">yeccscan.erl</code>·in·order·to·see·how·a·filter·can·be |
| 169 | added·on·top·of·<a·href="../../../../lib/stdlib-6.2.1/doc/html/io.html#scan_erl_form/3"><code·class="inline">io:scan_erl_form/3</code></a>·to·provide·a·scanner·for·Yecc·that | 169 | added·on·top·of·<a·href="../../../../lib/stdlib-6.2.1/doc/html/io.html#scan_erl_form/3"><code·class="inline">io:scan_erl_form/3</code></a>·to·provide·a·scanner·for·Yecc·that |
| 170 | tokenizes·grammar·files·before·parsing·them·with·the·Yecc·parser.·A·more·general | 170 | tokenizes·grammar·files·before·parsing·them·with·the·Yecc·parser.·A·more·general |
| 171 | approach·to·scanner·implementation·is·to·use·a·scanner·generator·such·as | 171 | approach·to·scanner·implementation·is·to·use·a·scanner·generator·such·as |
| 172 | <a·href="leex.html"><code·class="inline">leex</code></a>.</p><h2·id="module-grammar-definition-format"·class="section-heading"> | 172 | <a·href="leex.html"><code·class="inline">leex</code></a>.</p><h2·id="module-grammar-definition-format"·class="section-heading"> |
| 173 | ··<a·href="#module-grammar-definition-format"·class="hover-link"> | 173 | ··<a·href="#module-grammar-definition-format"·class="hover-link"> |
| Offset 229, 29 lines modified | Offset 229, 29 lines modified | ||
| 229 | list·->·'('·')'. | 229 | list·->·'('·')'. |
| 230 | list·->·'('·elements·')'. | 230 | list·->·'('·elements·')'. |
| 231 | elements·->·element. | 231 | elements·->·element. |
| 232 | elements·->·element·elements. | 232 | elements·->·element·elements. |
| 233 | element·->·atom. | 233 | element·->·atom. |
| 234 | element·->·list.</code></pre><p>This·grammar·can·be·used·to·generate·a·parser·which·parses·list·expressions, | 234 | element·->·list.</code></pre><p>This·grammar·can·be·used·to·generate·a·parser·which·parses·list·expressions, |
| 235 | such·as·<code·class="inline">(),·(a),·(peter·charles),·(a·(b·c)·d·(())),·...</code>·provided·that·your | 235 | such·as·<code·class="inline">(),·(a),·(peter·charles),·(a·(b·c)·d·(())),·...</code>·provided·that·your |
| 236 | scanner·tokenizes,·for·example,·the·input·<code·class="inline">(peter·charles)</code>·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 236 | scanner·tokenizes,·for·example,·the·input·<code·class="inline">(peter·charles)</code>·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="0537040056-1">[</span><span·class="p"·data-group-id="0537040056-2">{</span><span·class="ss">'('</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="0537040056-2">}</span><span·class="w">·</s[·...·truncated·by·diffoscope;·len:·920,·SHA:·953a0526fa553c5ffaf4292670d1aeb3c7d05ed96aba18e95ac185ceef036538·...·]-5">}</span><span·class="p">,</span><span·class="w"> |
| 237 | ·</span><span·class="p"·data-group-id=" | 237 | ·</span><span·class="p"·data-group-id="0537040056-6">{</span><span·class="ss">'$end'</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="0537040056-6">}</span><span·class="p"·data-group-id="0537040056-1">]</span></code></pre><p>When·a·grammar·rule·is·used·by·the·parser·to·parse·(part·of)·the·input·string·as |
| 238 | a·grammatical·phrase,·the·associated·code·is·evaluated,·and·the·value·of·the | 238 | a·grammatical·phrase,·the·associated·code·is·evaluated,·and·the·value·of·the |
| 239 | last·expression·becomes·the·value·of·the·parsed·phrase.·This·value·may·be·used | 239 | last·expression·becomes·the·value·of·the·parsed·phrase.·This·value·may·be·used |
| 240 | by·the·parser·later·to·build·structures·that·are·values·of·higher·phrases·of | 240 | by·the·parser·later·to·build·structures·that·are·values·of·higher·phrases·of |
| 241 | which·the·current·phrase·is·a·part.·The·values·initially·associated·with | 241 | which·the·current·phrase·is·a·part.·The·values·initially·associated·with |
| 242 | terminal·category·phrases,·i.e.·input·tokens,·are·the·token·tuples·themselves.</p><p>Below·is·an·example·of·the·grammar·above·with·structure·building·code·added:</p><pre><code·class="text">list·->·'('·')'·:·nil. | 242 | terminal·category·phrases,·i.e.·input·tokens,·are·the·token·tuples·themselves.</p><p>Below·is·an·example·of·the·grammar·above·with·structure·building·code·added:</p><pre><code·class="text">list·->·'('·')'·:·nil. |
| 243 | list·->·'('·elements·')'·:·'$2'. | 243 | list·->·'('·elements·')'·:·'$2'. |
| 244 | elements·->·element·:·{cons,·'$1',·nil}. | 244 | elements·->·element·:·{cons,·'$1',·nil}. |
| 245 | elements·->·element·elements·:·{cons,·'$1',·'$2'}. | 245 | elements·->·element·elements·:·{cons,·'$1',·'$2'}. |
| 246 | element·->·atom·:·'$1'. | 246 | element·->·atom·:·'$1'. |
| 247 | element·->·list·:·'$1'.</code></pre><p>With·this·code·added·to·the·grammar·rules,·the·parser·produces·the·following | 247 | element·->·list·:·'$1'.</code></pre><p>With·this·code·added·to·the·grammar·rules,·the·parser·produces·the·following |
| 248 | value·(structure)·when·parsing·the·input·string·<code·class="inline">(a·b·c).</code>.·This·still·assumes | 248 | value·(structure)·when·parsing·the·input·string·<code·class="inline">(a·b·c).</code>.·This·still·assumes |
| 249 | that·this·was·the·first·input·line·that·the·scanner·tokenized:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 249 | that·this·was·the·first·input·line·that·the·scanner·tokenized:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="7022921815-1">{</span><span·class="ss">cons</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7022921815-2">{</span><span·class="ss">atom</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><spa[·...·truncated·by·diffoscope;·len:·567,·SHA:·6e6488187965dca888db58d69fb29ae348a1b30f9ff97c3d435c9d869ac2bad3·...·]-4">}</span><span·class="p">,</span><span·class="w"> |
| 250 | ····························</span><span·class="p"·data-group-id=" | 250 | ····························</span><span·class="p"·data-group-id="7022921815-5">{</span><span·class="ss">cons</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7022921815-6">{</span><span·class="ss">atom</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><spa[·...·truncated·by·diffoscope;·len:·344,·SHA:·457f723037f1639539aa9dacee33fcfacc01191a199577a69746f65ebeacfc10·...·]-1">}</span></code></pre><p>The·associated·code·contains·<code·class="inline">pseudo·variables</code>·<code·class="inline">'$1'</code>,·<code·class="inline">'$2'</code>, |
| 251 | <code·class="inline">'$3'</code>,·and·so·on.··which·refer·to·(are·bound·to)·the·values | 251 | <code·class="inline">'$3'</code>,·and·so·on.··which·refer·to·(are·bound·to)·the·values |
| 252 | associated·previously·by·the·parser·with·the·symbols·of·the·right-hand | 252 | associated·previously·by·the·parser·with·the·symbols·of·the·right-hand |
| 253 | side·of·the·rule.·When·these·symbols·are·terminal·categories,·the | 253 | side·of·the·rule.·When·these·symbols·are·terminal·categories,·the |
| 254 | values·are·token·tuples·of·the·input·string·(see·above).</p><p>The·associated·code·may·not·only·be·used·to·build·structures | 254 | values·are·token·tuples·of·the·input·string·(see·above).</p><p>The·associated·code·may·not·only·be·used·to·build·structures |
| 255 | associated·with·phrases,·but·may·also·be·used·for·syntactic·and | 255 | associated·with·phrases,·but·may·also·be·used·for·syntactic·and |
| 256 | semantic·tests,·printout·actions·(for·example·for·tracing),·and·so·on | 256 | semantic·tests,·printout·actions·(for·example·for·tracing),·and·so·on |
| 257 | during·the·parsing·process.·Since·tokens·contain·positional·(line | 257 | during·the·parsing·process.·Since·tokens·contain·positional·(line |
| Offset 266, 37 lines modified | Offset 266, 37 lines modified | ||
| 266 | element·->·atom·:·'$1'. | 266 | element·->·atom·:·'$1'. |
| 267 | element·->·list·:·'$1'.</code></pre><h2·id="module-generating-a-parser"·class="section-heading"> | 267 | element·->·list·:·'$1'.</code></pre><h2·id="module-generating-a-parser"·class="section-heading"> |
| 268 | ··<a·href="#module-generating-a-parser"·class="hover-link"> | 268 | ··<a·href="#module-generating-a-parser"·class="hover-link"> |
| 269 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 269 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 270 | ··</a> | 270 | ··</a> |
| 271 | ··<span·class="text">Generating·a·Parser</span> | 271 | ··<span·class="text">Generating·a·Parser</span> |
| 272 | </h2> | 272 | </h2> |
| 273 | <p>To·call·the·parser·generator,·use·the·following·command:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">yecc</span><span·class="p">:</span><span·class="nf">file</span><span·class="p"·data-group-id=" | 273 | <p>To·call·the·parser·generator,·use·the·following·command:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">yecc</span><span·class="p">:</span><span·class="nf">file</span><span·class="p"·data-group-id="6034346597-1">(</span><span·class="n">Grammarfile</span><span·class="p"·data-group-id="6034346597-1">)</span><span·class="p">.</span></code></pre><p>An·error·message·from·Yecc·will·be·shown·if·the·grammar·is·not·of·the·LALR·type |
| 274 | (for·example·too·ambiguous).·Shift/reduce·conflicts·are·resolved·in·favor·of | 274 | (for·example·too·ambiguous).·Shift/reduce·conflicts·are·resolved·in·favor·of |
| 275 | shifting·if·there·are·no·operator·precedence·declarations.·Refer·to·the·<code·class="inline">yacc</code> | 275 | shifting·if·there·are·no·operator·precedence·declarations.·Refer·to·the·<code·class="inline">yacc</code> |
| 276 | documentation·on·the·use·of·operator·precedence.</p><p>The·output·file·contains·Erlang·source·code·for·a·parser·module·with·module·name | 276 | documentation·on·the·use·of·operator·precedence.</p><p>The·output·file·contains·Erlang·source·code·for·a·parser·module·with·module·name |
| 277 | equal·to·the·<code·class="inline">Parserfile</code>·parameter.·After·compilation,·the·parser·can·be·called | 277 | equal·to·the·<code·class="inline">Parserfile</code>·parameter.·After·compilation,·the·parser·can·be·called |
| 278 | as·follows·(the·module·name·is·assumed·to·be·<code·class="inline">myparser</code>):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">myparser</span><span·class="p">:</span><span·class="nf">parse</span><span·class="p"·data-group-id="3 | 278 | as·follows·(the·module·name·is·assumed·to·be·<code·class="inline">myparser</code>):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">myparser</span><span·class="p">:</span><span·class="nf">parse</span><span·class="p"·data-group-id="3441906577-1">(</span><span·class="nc">myscanner</span><span·class="p">:</span><span·class="nf">scan</span><span·class="p"·data-group-id="3441906577-2">(</span><span·class="n">Inport</span><span·class="p"·data-group-id="3441906577-2">)</span><span·class="p"[·...·truncated·by·diffoscope;·len:·26,·SHA:·963f7106bae59fdf824f748df5516d47288ede1e01ae74a82ec4d76e0282cdce·...·]-1">)</span></code></pre><p>The·call·format·can·be·different·if·a·customized·prologue·file·has·been·included |
| 279 | when·generating·the·parser·instead·of·the·default·file | 279 | when·generating·the·parser·instead·of·the·default·file |
| 280 | <code·class="inline">lib/parsetools/include/yeccpre.hrl</code>.</p><p>With·the·standard·prologue,·this·call·will·return·either·<code·class="inline">{ok,·Result}</code>,·where | 280 | <code·class="inline">lib/parsetools/include/yeccpre.hrl</code>.</p><p>With·the·standard·prologue,·this·call·will·return·either·<code·class="inline">{ok,·Result}</code>,·where |
| 281 | <code·class="inline">Result</code>·is·a·structure·that·the·Erlang·code·of·the·grammar·file·has·built,·or | 281 | <code·class="inline">Result</code>·is·a·structure·that·the·Erlang·code·of·the·grammar·file·has·built,·or |
| 282 | <code·class="inline">{error,·{Position,·Module,·Message}}</code>·if·there·was·a·syntax·error·in·the·input.</p><p><code·class="inline">Message</code>·is·something·which·may·be·converted·into·a·string·by·calling | 282 | <code·class="inline">{error,·{Position,·Module,·Message}}</code>·if·there·was·a·syntax·error·in·the·input.</p><p><code·class="inline">Message</code>·is·something·which·may·be·converted·into·a·string·by·calling |
| 283 | <code·class="inline">Module:format_error(Message)</code>·and·printed·with·<a·href="../../../../lib/stdlib-6.2.1/doc/html/io.html#format/3"><code·class="inline">io:format/3</code></a>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>By·default,·the·parser·that·was·generated·will·not·print·out·error·messages·to | 283 | <code·class="inline">Module:format_error(Message)</code>·and·printed·with·<a·href="../../../../lib/stdlib-6.2.1/doc/html/io.html#format/3"><code·class="inline">io:format/3</code></a>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>By·default,·the·parser·that·was·generated·will·not·print·out·error·messages·to |
| 284 | the·screen.·The·user·will·have·to·do·this·either·by·printing·the·returned | 284 | the·screen.·The·user·will·have·to·do·this·either·by·printing·the·returned |
| 285 | error·messages,·or·by·inserting·tests·and·print·instructions·in·the·Erlang | 285 | error·messages,·or·by·inserting·tests·and·print·instructions·in·the·Erlang |
| 286 | code·associated·with·the·syntax·rules·of·the·grammar·file.</p></section><p>It·is·also·possible·to·make·the·parser·ask·for·more·input·tokens·when·needed·if | 286 | code·associated·with·the·syntax·rules·of·the·grammar·file.</p></section><p>It·is·also·possible·to·make·the·parser·ask·for·more·input·tokens·when·needed·if |
| 287 | the·following·call·format·is·used:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">myparser</span><span·class="p">:</span><span·class="nf">parse_and_scan</span><span·class="p"·data-group-id="6635643214-1">(</span><span·class="p"·data-group-id="6635643214-2">{</span><span·class="n">Function</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Args</span><span·class="p"·data-group-id="6635643214-2">}</span><span·class="p"·data-group-id="6635643214-1">)</span><span·class="w"> | ||
| 288 | 287 | the·following·call·format·is·used:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">myparser</span><span·class="p">:</span><span·class="nf">parse_and_scan</span><span·class="p"·data-group-id="6458585208-1">(</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·258,·SHA:·0ac7394f70c87ce5fc4b4365883034fa12d469a765a536ef5cfb09f49e80e31f·...·] | |
| 288 | </span><span·class="nc">myparser</span><span·class="p">:</span><span·class="nf">parse_and_scan</span><span·class="p"·data-group-id="6458585208-3">(</span><span·class="p"·data-group-id="6458585208-4">{</span><span·class="n">Mod</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tokenizer</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Args</span><span·class="p"·data-group-id="6458585208-4">}</span><span·class="p"·data-group-id="6458585208-3">)</span></code></pre><p>The·tokenizer·<code·class="inline">Function</code>·is·either·a·fun·or·a·tuple·<code·class="inline">{Mod,·Tokenizer}</code>.·The·call | ||
| 289 | <a·href="../../../../erts-15.2.3/doc/html/erlang.html#apply/2"><code·class="inline">apply(Function,·Args)</code></a>·or | 289 | <a·href="../../../../erts-15.2.3/doc/html/erlang.html#apply/2"><code·class="inline">apply(Function,·Args)</code></a>·or |
| 290 | <a·href="../../../../erts-15.2.3/doc/html/erlang.html#apply/2"><code·class="inline">apply({Mod,·Tokenizer},·Args)</code></a>·is·executed·whenever·a·new·token·is | 290 | <a·href="../../../../erts-15.2.3/doc/html/erlang.html#apply/2"><code·class="inline">apply({Mod,·Tokenizer},·Args)</code></a>·is·executed·whenever·a·new·token·is |
| 291 | needed.·This,·for·example,·makes·it·possible·to·parse·from·a·file,·token·by | 291 | needed.·This,·for·example,·makes·it·possible·to·parse·from·a·file,·token·by |
| 292 | token.</p><p>The·tokenizer·used·above·has·to·be·implemented·so·as·to·return·one·of·the | 292 | token.</p><p>The·tokenizer·used·above·has·to·be·implemented·so·as·to·return·one·of·the |
| 293 | following:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 293 | following:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="4272616430-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tokens</span><span·class="p">,</span><span·class="w">·</span><span·class="n">EndPosition</span><span·class="p"·data-group-id="4272616430-1">}</span><span·class="w"> |
| 294 | </span><span·class="p"·data-group-id=" | 294 | </span><span·class="p"·data-group-id="4272616430-2">{</span><span·class="ss">eof</span><span·class="p">,</span><span·class="w">·</span><span·class="n">EndPosition</span><span·class="p"·data-group-id="4272616430-2">}</span><span·class="w"> |
| 295 | </span><span·class="p"·data-group-id=" | 295 | </span><span·class="p"·data-group-id="4272616430-3">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Error_description</span><span·class="p">,</span><span·class="w">·</span><span·class="n">EndPosition</span><span·class="p"·data-group-id="4272[·...·truncated·by·diffoscope;·len:·6,·SHA:·959528a9055632e71af2c58eba589319033c742ca0cf59409cb5db577e62b190·...·]-3">}</span></code></pre><p>This·conforms·to·the·format·used·by·the·scanner·in·the·Erlang·<code·class="inline">io</code>·library |
| 296 | module.</p><p>If·<code·class="inline">{eof,·EndPosition}</code>·is·returned·immediately,·the·call·to·<code·class="inline">parse_and_scan/1</code> | 296 | module.</p><p>If·<code·class="inline">{eof,·EndPosition}</code>·is·returned·immediately,·the·call·to·<code·class="inline">parse_and_scan/1</code> |
| 297 | returns·<code·class="inline">{ok,·eof}</code>.·If·<code·class="inline">{eof,·EndPosition}</code>·is·returned·before·the·parser | 297 | returns·<code·class="inline">{ok,·eof}</code>.·If·<code·class="inline">{eof,·EndPosition}</code>·is·returned·before·the·parser |
| 298 | expects·end·of·input,·<code·class="inline">parse_and_scan/1</code>·will,·of·course,·return·an·error | 298 | expects·end·of·input,·<code·class="inline">parse_and_scan/1</code>·will,·of·course,·return·an·error |
| 299 | message·(see·above).·Otherwise·<code·class="inline">{ok,·Result}</code>·is·returned.</p><h2·id="module-more-examples"·class="section-heading"> | 299 | message·(see·above).·Otherwise·<code·class="inline">{ok,·Result}</code>·is·returned.</p><h2·id="module-more-examples"·class="section-heading"> |
| 300 | ··<a·href="#module-more-examples"·class="hover-link"> | 300 | ··<a·href="#module-more-examples"·class="hover-link"> |
| 301 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 301 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 302 | ··</a> | 302 | ··</a> |
| Offset 338, 44 lines modified | Offset 338, 44 lines modified | ||
| 338 | </span><span·class="n">Terminals</span><span·class="w"> | 338 | </span><span·class="n">Terminals</span><span·class="w"> |
| 339 | </span><span·class="ss">atom</span><span·class="w">·</span><span·class="nb">float</span><span·class="w">·</span><span·class="ss">integer</span><span·class="w">·</span><span·class="ss">reserved_symbol</span><span·class="w">·</span><span·class="ss">reserved_word</span><span·class="w">·</span><span·class="ss">string</span><span·class="w">·</span><span·class="ss">char</span><span·class="w">·</span><span·class="ss">var</span><span·class="w"> | 339 | </span><span·class="ss">atom</span><span·class="w">·</span><span·class="nb">float</span><span·class="w">·</span><span·class="ss">integer</span><span·class="w">·</span><span·class="ss">reserved_symbol</span><span·class="w">·</span><span·class="ss">reserved_word</span><span·class="w">·</span><span·class="ss">string</span><span·class="w">·</span><span·class="ss">char</span><span·class="w">·</span><span·class="ss">var</span><span·class="w"> |
| 340 | </span><span·class="ss">'->'</span><span·class="w">·</span><span·class="ss">':'</span><span·class="w">·</span><span·class="ss">dot</span><span·class="p">.</span><span·class="w"> | 340 | </span><span·class="ss">'->'</span><span·class="w">·</span><span·class="ss">':'</span><span·class="w">·</span><span·class="ss">dot</span><span·class="p">.</span><span·class="w"> |
| 341 | </span><span·class="n">Rootsymbol</span><span·class="w">·</span><span·class="ss">grammar</span><span·class="p">.</span><span·class="w"> | 341 | </span><span·class="n">Rootsymbol</span><span·class="w">·</span><span·class="ss">grammar</span><span·class="p">.</span><span·class="w"> |
| 342 | </span><span·class="n">Endsymbol</span><span·class="w">·</span><span·class="ss">'$end'</span><span·class="p">.</span><span·class="w"> | 342 | </span><span·class="n">Endsymbol</span><span·class="w">·</span><span·class="ss">'$end'</span><span·class="p">.</span><span·class="w"> |
| 343 | </span><span·class="ss">grammar</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">declaration</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">'$1'</span><span·class="p">.</span><span·class="w"> | 343 | </span><span·class="ss">grammar</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">declaration</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">'$1'</span><span·class="p">.</span><span·class="w"> |
| 344 | </span><span·class="ss">grammar</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">rule</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">'$1'</span><span·class="p">.</span><span·class="w"> | 344 | </span><span·class="ss">grammar</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">rule</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">'$1'</span><span·class="p">.</span><span·class="w"> |
| 345 | </span><span·class="ss">declaration</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">symbol</span><span·class="w">·</span><span·class="ss">symbols</span><span·class="w">·</span><span·class="nc">dot</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 345 | </span><span·class="ss">declaration</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">symbol</span><span·class="w">·</span><span·class="ss">symbols</span><span·class="w">·</span><span·class="nc">dot</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="6332061019-1">{</span><span·class="ss">'$1'</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'$2'</span><span·class="p"·data-group-id="6332061019-1">}</span><span·class="p">.</span><span·class="w"> |
| 346 | </span><span·class="ss">rule</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">head</span><span·class="w">·</span><span·class="ss">'->'</span><span·class="w">·</span><span·class="ss">symbols</span><span·class="w">·</span><span·class="ss">attached_code</span><span·class="w">·</span><span·class="nc">dot</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 346 | </span><span·class="ss">rule</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">head</span><span·class="w">·</span><span·class="ss">'->'</span><span·class="w">·</span><span·class="ss">symbols</span><span·class="w">·</span><span·class="ss">attached_code</span><span·class="w">·</span><span·class="nc">dot</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="6332061019-2">{</span><span·class="ss">rule</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6332061019-3">[</span><span·class="ss">'$1'</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</sp[·...·truncated·by·diffoscope;·len:·79,·SHA:·de848c4bf81e6889e59405f7f217604cf3cc8aedcc18f00686e4f6ab67277ac8·...·]9-3">]</span><span·class="p">,</span><span·class="w"> |
| 347 | ········</span><span·class="ss">'$4'</span><span·class="p"·data-group-id=" | 347 | ········</span><span·class="ss">'$4'</span><span·class="p"·data-group-id="6332061019-2">}</span><span·class="p">.</span><span·class="w"> |
| 348 | </span><span·class="ss">head</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">symbol</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">'$1'</span><span·class="p">.</span><span·class="w"> | 348 | </span><span·class="ss">head</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">symbol</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">'$1'</span><span·class="p">.</span><span·class="w"> |
| 349 | </span><span·class="ss">symbols</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">symbol</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 349 | </span><span·class="ss">symbols</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">symbol</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="6332061019-4">[</span><span·class="ss">'$1'</span><span·class="p"·data-group-id="6332061019-4">]</span><span·class="p">.</span><span·class="w"> |
| 350 | </span><span·class="ss">symbols</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">symbol</span><span·class="w">·</span><span·class="ss">symbols</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 350 | </span><span·class="ss">symbols</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">symbol</span><span·class="w">·</span><span·class="ss">symbols</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="6332061019-5">[</span><span·class="ss">'$1'</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">'$2'</span><span·class="p"·data-group-id="6332061019-5">]</span><span·class="p">.</span><span·class="w"> |
| 351 | </span><span·class="ss">attached_code</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">':'</span><span·class="w">·</span><span·class="ss">tokens</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 351 | </span><span·class="ss">attached_code</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">':'</span><span·class="w">·</span><span·class="ss">tokens</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="6332061019-6">{</span><span·class="ss">erlang_code</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'$2'</span><span·class="p"·data-group-id="6332061019-6">}</span><span·class="p">.</span><span·class="w"> |
| 352 | </span><span·class="ss">attached_code</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">'$empty'</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 352 | </span><span·class="ss">attached_code</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">'$empty'</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="6332061019-7">{</span><span·class="ss">erlang_code</span><span·class="p">,</span><span·class="w"> |
| 353 | ·················</span><span·class="p"·data-group-id=" | 353 | ·················</span><span·class="p"·data-group-id="6332061019-8">[</span><span·class="p"·data-group-id="6332061019-9">{</span><span·class="ss">atom</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'$undefined[·...·truncated·by·diffoscope;·len:·158,·SHA:·15b5933d052aec486728c06f9b7fbfff85f66bd6b01c64517013106de1418254·...·]9-7">}</span><span·class="p">.</span><span·class="w"> |
| 354 | </span><span·class="ss">tokens</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">token</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 354 | </span><span·class="ss">tokens</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">token</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="6332061019-10">[</span><span·class="ss">'$1'</span><span·class="p"·data-group-id="6332061019-10">]</span><span·class="p">.</span><span·class="w"> |
| 355 | </span><span·class="ss">tokens</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">token</span><span·class="w">·</span><span·class="ss">tokens</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 355 | </span><span·class="ss">tokens</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">token</span><span·class="w">·</span><span·class="ss">tokens</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="6332061019-11">[</span><span·class="ss">'$1'</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">'$2'</span><span·class="p"·data-group-id="6332061019-11">]</span><span·class="p">.</span><span·class="w"> |
| 356 | </span><span·class="ss">symbol</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">var</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">value_of</span><span·class="p"·data-group-id=" | 356 | </span><span·class="ss">symbol</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">var</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">value_of</span><span·class="p"·data-group-id="6332061019-12">(</span><span·class="ss">'$1'</span><span·class="p"·data-group-id="6332061019-12">)</span><span·class="p">.</span><span·class="w"> |
| 357 | </span><span·class="ss">symbol</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">atom</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">value_of</span><span·class="p"·data-group-id=" | 357 | </span><span·class="ss">symbol</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">atom</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">value_of</span><span·class="p"·data-group-id="6332061019-13">(</span><span·class="ss">'$1'</span><span·class="p"·data-group-id="6332061019-13">)</span><span·class="p">.</span><span·class="w"> |
| 358 | </span><span·class="ss">symbol</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">integer</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">value_of</span><span·class="p"·data-group-id=" | 358 | </span><span·class="ss">symbol</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">integer</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">value_of</span><span·class="p"·data-group-id="6332061019-14">(</span><span·class="ss">'$1'</span><span·class="p"·data-group-id="6332061019-14">)</span><span·class="p">.</span><span·class="w"> |
| 359 | </span><span·class="ss">symbol</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">reserved_word</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">value_of</span><span·class="p"·data-group-id=" | 359 | </span><span·class="ss">symbol</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">reserved_word</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">value_of</span><span·class="p"·data-group-id="6332061019-15">(</span><span·class="ss">'$1'</span><span·class="p"·data-group-id="6332061019-15">)</span><span·class="p">.</span><span·class="w"> |
| 360 | </span><span·class="ss">token</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">var</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">'$1'</span><span·class="p">.</span><span·class="w"> | 360 | </span><span·class="ss">token</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">var</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">'$1'</span><span·class="p">.</span><span·class="w"> |
| 361 | </span><span·class="ss">token</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">atom</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">'$1'</span><span·class="p">.</span><span·class="w"> | 361 | </span><span·class="ss">token</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">atom</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">'$1'</span><span·class="p">.</span><span·class="w"> |
| 362 | </span><span·class="ss">token</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nb">float</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">'$1'</span><span·class="p">.</span><span·class="w"> | 362 | </span><span·class="ss">token</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nb">float</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">'$1'</span><span·class="p">.</span><span·class="w"> |
| 363 | </span><span·class="ss">token</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">integer</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">'$1'</span><span·class="p">.</span><span·class="w"> | 363 | </span><span·class="ss">token</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">integer</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">'$1'</span><span·class="p">.</span><span·class="w"> |
| 364 | </span><span·class="ss">token</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">string</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">'$1'</span><span·class="p">.</span><span·class="w"> | 364 | </span><span·class="ss">token</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">string</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">'$1'</span><span·class="p">.</span><span·class="w"> |
| 365 | </span><span·class="ss">token</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">char</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">'$1'</span><span·class="p">.</span><span·class="w"> | 365 | </span><span·class="ss">token</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">char</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">'$1'</span><span·class="p">.</span><span·class="w"> |
| 366 | </span><span·class="ss">token</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">reserved_symbol</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 366 | </span><span·class="ss">token</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">reserved_symbol</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="6332061019-16">{</span><span·class="nf">value_of</span><span·class="p"·data-group-id="6332061019-17">(</span><span·class="ss">'$1'</span><span·class="p"·data-group-id="6332061019-17">)</span><span·class="p">,</span><span·class="w">·</span><span·cla[·...·truncated·by·diffoscope;·len:·206,·SHA:·4504ad338a8a366a3abf6e2a1ac29e992f6f581791ab6d08937b4e96fce35cc7·...·]9-16">}</span><span·class="p">.</span><span·class="w"> |
| 367 | </span><span·class="ss">token</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">reserved_word</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 367 | </span><span·class="ss">token</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">reserved_word</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="6332061019-19">{</span><span·class="nf">value_of</span><span·class="p"·data-group-id="6332061019-20">(</span><span·class="ss">'$1'</span><span·class="p"·data-group-id="6332061019-20">)</span><span·class="p">,</span><span·class="w">·</span><span·cla[·...·truncated·by·diffoscope;·len:·206,·SHA:·6e32aa2a27aa295df5187f255ad6a4052472632bcdf4ca1450c785572d3e988b·...·]9-19">}</span><span·class="p">.</span><span·class="w"> |
| 368 | </span><span·class="ss">token</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">'->'</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 368 | </span><span·class="ss">token</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">'->'</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="6332061019-22">{</span><span·class="ss">'->'</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">line_of</span><span·class="p"·data-group-id="6332061019-23">(</span><span·class="ss">'$1'</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·69,·SHA:·fbf24442965af4a60b3c4254b2fda3088b311437544cbe8ccfc7927b0525df76·...·]9-22">}</span><span·class="p">.</span><span·class="w"> |
| 369 | </span><span·class="ss">token</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">':'</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 369 | </span><span·class="ss">token</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">':'</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="6332061019-24">{</span><span·class="ss">':'</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">line_of</span><span·class="p"·data-group-id="6332061019-25">(</span><span·class="ss">'$1'</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·65,·SHA:·81764b08ccfba03e2edc63d4eb61be2c9807617f735632914128f26a41f53d5e·...·]9-24">}</span><span·class="p">.</span><span·class="w"> |
| 370 | </span><span·class="n">Erlang</span><span·class="w">·</span><span·class="ss">code</span><span·class="p">.</span><span·class="w"> | 370 | </span><span·class="n">Erlang</span><span·class="w">·</span><span·class="ss">code</span><span·class="p">.</span><span·class="w"> |
| 371 | </span><span·class="nf">value_of</span><span·class="p"·data-group-id=" | 371 | </span><span·class="nf">value_of</span><span·class="p"·data-group-id="6332061019-26">(</span><span·class="n">Token</span><span·class="p"·data-group-id="6332061019-26">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 372 | ····</span><span·class="nf">element</span><span·class="p"·data-group-id=" | 372 | ····</span><span·class="nf">element</span><span·class="p"·data-group-id="6332061019-27">(</span><span·class="mi">3</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Token</span><span·class="p"·data-group-id="6332061019-27">)</span><span·class="p">.</span><span·class="w"> |
| 373 | </span><span·class="nf">line_of</span><span·class="p"·data-group-id=" | 373 | </span><span·class="nf">line_of</span><span·class="p"·data-group-id="6332061019-28">(</span><span·class="n">Token</span><span·class="p"·data-group-id="6332061019-28">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 374 | ····</span><span·class="nf">element</span><span·class="p"·data-group-id=" | 374 | ····</span><span·class="nf">element</span><span·class="p"·data-group-id="6332061019-29">(</span><span·class="mi">2</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Token</span><span·class="p"·data-group-id="6332061019-29">)</span><span·class="p">.</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>The·symbols·<code·class="inline">'->'</code>,·and·<code·class="inline">':'</code>·have·to·be·treated·in·a·special·way,·as·they·are |
| 375 | meta·symbols·of·the·grammar·notation,·as·well·as·terminal·symbols·of·the·Yecc | 375 | meta·symbols·of·the·grammar·notation,·as·well·as·terminal·symbols·of·the·Yecc |
| 376 | grammar.</p></section><p>5.·The·file·<code·class="inline">erl_parse.yrl</code>·in·the·<code·class="inline">lib/stdlib/src</code>·directory·contains·the | 376 | grammar.</p></section><p>5.·The·file·<code·class="inline">erl_parse.yrl</code>·in·the·<code·class="inline">lib/stdlib/src</code>·directory·contains·the |
| 377 | grammar·for·Erlang.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Syntactic·tests·are·used·in·the·code·associated·with·some·rules,·and·an·error | 377 | grammar·for·Erlang.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Syntactic·tests·are·used·in·the·code·associated·with·some·rules,·and·an·error |
| 378 | is·thrown·(and·caught·by·the·generated·parser·to·produce·an·error·message) | 378 | is·thrown·(and·caught·by·the·generated·parser·to·produce·an·error·message) |
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| 3187 | certificates·include·policies·the·constrained·policy·set·with | 3187 | certificates·include·policies·the·constrained·policy·set·with |
| 3188 | potential·qualifiers·will·be·returned,·these·values·are·derived·from | 3188 | potential·qualifiers·will·be·returned,·these·values·are·derived·from |
| 3189 | the·policy·tree·created·as·part·of·the·path·validation·algorithm.·The | 3189 | the·policy·tree·created·as·part·of·the·path·validation·algorithm.·The |
| 3190 | constrained·set·can·be·constrained·only·by·the·Certificate·Authorities | 3190 | constrained·set·can·be·constrained·only·by·the·Certificate·Authorities |
| 3191 | or·also·by·the·user·when·the·option·<code·class="inline">policy_set</code>·is·provided·to·this | 3191 | or·also·by·the·user·when·the·option·<code·class="inline">policy_set</code>·is·provided·to·this |
| 3192 | function.·The·qualifiers·convey·information·about·the·valid·policy·and | 3192 | function.·The·qualifiers·convey·information·about·the·valid·policy·and |
| 3193 | is·intended·as·information·to·end·users.</p><p>Available·options:</p><ul><li><p><strong>{verify_fun,·{fun(),·UserState::term()}</strong>·-·The·fun·must·be | 3193 | is·intended·as·information·to·end·users.</p><p>Available·options:</p><ul><li><p><strong>{verify_fun,·{fun(),·UserState::term()}</strong>·-·The·fun·must·be |
| 3194 | defined·as:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="p"·data-group-id=" | 3194 | defined·as:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="p"·data-group-id="6702152586-1">(</span><span·class="n">OtpCert</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">'OTPCertificate'</span><span·class="p"·data-group-id="67021[·...·truncated·by·diffoscope;·len:·58,·SHA:·101474ce7593ac62bea34b93a57c79f87d5f097e4cf2c1da3f86d5e222bf68de·...·]-2">}</span><span·class="p">,</span><span·class="w"> |
| 3195 | ····</span><span·class="n">Event</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 3195 | ····</span><span·class="n">Event</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="6702152586-3">{</span><span·class="ss">bad_cert</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">bad_cert_rea[·...·truncated·by·diffoscope;·len:·548,·SHA:·ae5526e24c5b753e1632a351d58d89b521adecab2073e2cbdaed7181affc8a57·...·]-3">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 3196 | ·············</span><span·class="p"·data-group-id=" | 3196 | ·············</span><span·class="p"·data-group-id="6702152586-7">{</span><span·class="ss">extension</span><span·class="p">,</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">'Extension'</span><span·class="p"·data-group-id="6702152586-8">{</span><span·class="p"·data-group-id="67[·...·truncated·by·diffoscope;·len:·61,·SHA:·cbdee5ec65a4219f61179777130a871d5124891e8c99609bc004c5a0d17360cc·...·]-7">}</span><span·class="p">,</span><span·class="w"> |
| 3197 | ····</span><span·class="n">UserState</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id=" | 3197 | ····</span><span·class="n">UserState</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id="6702152586-9">(</span><span·class="p"·data-group-id="6702152586-9">)</span><span·class="p"·data-group-id="6702152586-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 3198 | ··</span><span·class="p"·data-group-id=" | 3198 | ··</span><span·class="p"·data-group-id="6702152586-10">{</span><span·class="ss">valid</span><span·class="p">,</span><span·class="w">·</span><span·class="n">UserState</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</span>[·...·truncated·by·diffoscope;·len:·149,·SHA:·2621e126a69e1b0e5cdac01323fa21fe6f4eeb8bfdefea2afd5a4a106cd85a27·...·]-10">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 3199 | ··</span><span·class="p"·data-group-id=" | 3199 | ··</span><span·class="p"·data-group-id="6702152586-12">{</span><span·class="ss">valid_peer</span><span·class="p">,</span><span·class="w">·</span><span·class="n">UserState</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</[·...·truncated·by·diffoscope;·len:·154,·SHA:·a92c1ff8d5a40f4ebd15088d7669a30271ea4e7da668f8101a35d8c4f53393df·...·]-12">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 3200 | ··</span><span·class="p"·data-group-id=" | 3200 | ··</span><span·class="p"·data-group-id="6702152586-14">{</span><span·class="ss">fail</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</span><spa[·...·truncated·by·diffoscope;·len:·145,·SHA:·a5bfd5ff9ab29be0dc11a3822c8b2943ea96ba64b452b6b17fe22a86e5702075·...·]-14">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 3201 | ··</span><span·class="p"·data-group-id=" | 3201 | ··</span><span·class="p"·data-group-id="6702152586-16">{</span><span·class="ss">unknown</span><span·class="p">,</span><span·class="w">·</span><span·class="n">UserState</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</spa[·...·truncated·by·diffoscope;·len:·634,·SHA:·555b5f20fba23017f326d5b7d82ff78f25965ea8de0a9e19699c5d7642c222ba·...·]-2">}</span><span·class="p">,</span><span·class="w"> |
| 3202 | ····</span><span·class="n">DerCert</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">der_encoded</span><span·class="p"·data-group-id=" | 3202 | ····</span><span·class="n">DerCert</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">der_encoded</span><span·class="p"·data-group-id="2090481294-3">(</span><span·class="p"·data-group-id="2090481294-3">)</span><span·class="p">,</span><span·class="w"> |
| 3203 | ····</span><span·class="n">Event</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 3203 | ····</span><span·class="n">Event</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="2090481294-4">{</span><span·class="ss">bad_cert</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">bad_cert_rea[·...·truncated·by·diffoscope;·len:·548,·SHA:·f65107e6ad66d15b45e3e7ef3d96cbcae6583df6788c1a3f2f848962a14d76f2·...·]-4">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 3204 | ·············</span><span·class="p"·data-group-id=" | 3204 | ·············</span><span·class="p"·data-group-id="2090481294-8">{</span><span·class="ss">extension</span><span·class="p">,</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">'Extension'</span><span·class="p"·data-group-id="2090481294-9">{</span><span·class="p"·data-group-id="20[·...·truncated·by·diffoscope;·len:·61,·SHA:·81855d9dda29c85ae378c61c4578bad4c4a62fa91ce657829de0d4b9481050ba·...·]-8">}</span><span·class="p">,</span><span·class="w"> |
| 3205 | ····</span><span·class="n">UserState</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id=" | 3205 | ····</span><span·class="n">UserState</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id="2090481294-10">(</span><span·class="p"·data-group-id="2090481294-10">)</span><span·class="p"·data-group-id="2090481294-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 3206 | ··</span><span·class="p"·data-group-id=" | 3206 | ··</span><span·class="p"·data-group-id="2090481294-11">{</span><span·class="ss">valid</span><span·class="p">,</span><span·class="w">·</span><span·class="n">UserState</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</span>[·...·truncated·by·diffoscope;·len:·149,·SHA:·679271d105aa74ab0955bbe5a91386c14aeedc36cc8b80017b66f6348ceae970·...·]-11">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 3207 | ··</span><span·class="p"·data-group-id=" | 3207 | ··</span><span·class="p"·data-group-id="2090481294-13">{</span><span·class="ss">valid_peer</span><span·class="p">,</span><span·class="w">·</span><span·class="n">UserState</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</[·...·truncated·by·diffoscope;·len:·154,·SHA:·bf58d004d78fdfe9163604be61f0a4bc03ff8a36fa4d690aa58df3f4e253830b·...·]-13">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 3208 | ··</span><span·class="p"·data-group-id=" | 3208 | ··</span><span·class="p"·data-group-id="2090481294-15">{</span><span·class="ss">fail</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</span><spa[·...·truncated·by·diffoscope;·len:·145,·SHA:·810ecbb3cc1edb9d3ca9ba9dfb3e5c20a0c4b8d40bee55ed8c4b3d2cb15d1902·...·]-15">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 3209 | ··</span><span·class="p"·data-group-id=" | 3209 | ··</span><span·class="p"·data-group-id="2090481294-17">{</span><span·class="ss">unknown</span><span·class="p">,</span><span·class="w">·</span><span·class="n">UserState</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</spa[·...·truncated·by·diffoscope;·len:·151,·SHA:·799eac1b249c2cc06930f41215568a5e06ec66aca43a2fdb40092ece3eaae047·...·]-17">}</span><span·class="p">.</span></code></pre><p>The·verify·callback·can·have·3·or·4·arguments·in·case·the·DER·encoded |
| 3210 | version·is·needed·by·the·callback.</p><p>If·the·verify·callback·fun·returns·<code·class="inline">{fail,·Reason}</code>,·the·verification·process | 3210 | version·is·needed·by·the·callback.</p><p>If·the·verify·callback·fun·returns·<code·class="inline">{fail,·Reason}</code>,·the·verification·process |
| 3211 | is·immediately·stopped.·If·the·verify·callback·fun·returns | 3211 | is·immediately·stopped.·If·the·verify·callback·fun·returns |
| 3212 | <code·class="inline">{valid,·UserState}</code>,·the·verification·process·is·continued.·This·can·be·used | 3212 | <code·class="inline">{valid,·UserState}</code>,·the·verification·process·is·continued.·This·can·be·used |
| 3213 | to·accept·specific·path·validation·errors,·such·as·<code·class="inline">selfsigned_peer</code>,·as·well | 3213 | to·accept·specific·path·validation·errors,·such·as·<code·class="inline">selfsigned_peer</code>,·as·well |
| 3214 | as·verifying·application-specific·extensions.·If·called·with·an·extension | 3214 | as·verifying·application-specific·extensions.·If·called·with·an·extension |
| 3215 | unknown·to·the·user·application,·the·return·value·<code·class="inline">{unknown,·UserState}</code>·is·to | 3215 | unknown·to·the·user·application,·the·return·value·<code·class="inline">{unknown,·UserState}</code>·is·to |
| 3216 | be·used.</p><blockquote><h4·class="note">Note</h4><p>If·you·need·the·DER·encoded·version·of·the·certificate·and·have | 3216 | be·used.</p><blockquote><h4·class="note">Note</h4><p>If·you·need·the·DER·encoded·version·of·the·certificate·and·have |
| Offset 3366, 17 lines modified | Offset 3366, 17 lines modified | ||
| 3366 | certificate·is·in·agreement·with·at·least·one·of·the·<em>Reference·Identifier</em>·that | 3366 | certificate·is·in·agreement·with·at·least·one·of·the·<em>Reference·Identifier</em>·that |
| 3367 | the·client·expects·to·be·connected·to.</p><p>The·function·is·intended·to·be·added·as·an·extra·client·check·of·the | 3367 | the·client·expects·to·be·connected·to.</p><p>The·function·is·intended·to·be·added·as·an·extra·client·check·of·the |
| 3368 | peer·certificate·when·performing | 3368 | peer·certificate·when·performing |
| 3369 | <a·href="#pkix_path_validation/3">public_key:pkix_path_validation/3</a></p><p>See·<a·href="https://tools.ietf.org/html/rfc6125">RFC·6125</a>·for·detailed·information | 3369 | <a·href="#pkix_path_validation/3">public_key:pkix_path_validation/3</a></p><p>See·<a·href="https://tools.ietf.org/html/rfc6125">RFC·6125</a>·for·detailed·information |
| 3370 | about·hostname·verification.·The | 3370 | about·hostname·verification.·The |
| 3371 | <a·href="using_public_key.html#verify_hostname">User's·Guide</a>·and | 3371 | <a·href="using_public_key.html#verify_hostname">User's·Guide</a>·and |
| 3372 | <a·href="using_public_key.html#verify_hostname_examples">code·examples</a>·describes·this | 3372 | <a·href="using_public_key.html#verify_hostname_examples">code·examples</a>·describes·this |
| 3373 | function·more·detailed.</p><p>The·option·funs·are·described·here:</p><ul><li><p><strong><code·class="inline">match_fun</code></strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="p"·data-group-id="185 | 3373 | function·more·detailed.</p><p>The·option·funs·are·described·here:</p><ul><li><p><strong><code·class="inline">match_fun</code></strong></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="p"·data-group-id="1835524902-1">(</span><span·class="n">ReferenceId</span><span·class="p">:</span><span·class="p">:</span><span·class="n">ReferenceId</span><span·class="p"·data-group-id="1835524902-2">(</span><span·class="p"·data-group-id="1835524902-2">)</span><span·class="w[·...·truncated·by·diffoscope;·len:·257,·SHA:·39dcdbb582115ba98483430ca67d4b5499e830d28fb872fd91140418aec1d1f4·...·]-3">)</span><span·class="p">,</span><span·class="w"> |
| 3374 | ····</span><span·class="n">PresentedId</span><span·class="p">:</span><span·class="p">:</span><span·class="p"·data-group-id="185 | 3374 | ····</span><span·class="n">PresentedId</span><span·class="p">:</span><span·class="p">:</span><span·class="p"·data-group-id="1835524902-4">{</span><span·class="ss">dNSName</span><span·class="p">,</span><span·class="nf">string</span><span·class="p"·data-group-id="1835524902-5">(</span><span·class="p"·data-group-id="1835524902-5">)</span><span·class="p"·data-group-id="1835524902-4">[·...·truncated·by·diffoscope;·len:·330,·SHA:·e402699fb7153f78ee6aae1d7fde0501bf8ef08164236a42066817fd49b4f43f·...·]-7">)</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 3375 | ·················</span><span·class="p"·data-group-id="185 | 3375 | ·················</span><span·class="p"·data-group-id="1835524902-8">{</span><span·class="ss">iPAddress</span><span·class="p">,</span><span·class="nf">list</span><span·class="p"·data-group-id="1835524902-9">(</span><span·class="nf">byte</span><span·class="p"·data-group-id="1835524902-10">(</span><span·class="p"·[·...·truncated·by·diffoscope;·len:·951,·SHA:·7d427f61ec24b151b80d04d181587a7228272ba13ce5e51c53ac85d7565dcf90·...·]-1">)</span></code></pre><p>This·function·replaces·the·default·host·name·matching·rules.·The·fun·should |
| 3376 | return·a·boolean·to·tell·if·the·Reference·ID·and·Presented·ID·matches·or·not. | 3376 | return·a·boolean·to·tell·if·the·Reference·ID·and·Presented·ID·matches·or·not. |
| 3377 | The·match·fun·can·also·return·a·third·value,·value,·the·atom·<code·class="inline">default</code>,·if·the | 3377 | The·match·fun·can·also·return·a·third·value,·value,·the·atom·<code·class="inline">default</code>,·if·the |
| 3378 | default·matching·rules·shall·apply.·This·makes·it·possible·to·augment·the | 3378 | default·matching·rules·shall·apply.·This·makes·it·possible·to·augment·the |
| 3379 | tests·with·a·special·case:</p><pre><code·class="text">fun(....)·->·true;···%·My·special·case | 3379 | tests·with·a·special·case:</p><pre><code·class="text">fun(....)·->·true;···%·My·special·case |
| 3380 | ···(_,·_)·->·default·%·all·others·falls·back·to·the·inherit·tests | 3380 | ···(_,·_)·->·default·%·all·others·falls·back·to·the·inherit·tests |
| 3381 | end</code></pre><p>See·<a·href="#pkix_verify_hostname_match_fun/1"><code·class="inline">pkix_verify_hostname_match_fun/1</code></a>·for·a·function·that·takes·a·protocol | 3381 | end</code></pre><p>See·<a·href="#pkix_verify_hostname_match_fun/1"><code·class="inline">pkix_verify_hostname_match_fun/1</code></a>·for·a·function·that·takes·a·protocol |
| 3382 | name·as·argument·and·returns·a·<code·class="inline">fun/2</code>·suitable·for·this·option·and | 3382 | name·as·argument·and·returns·a·<code·class="inline">fun/2</code>·suitable·for·this·option·and |
| Offset 3560, 22 lines modified | Offset 3560, 22 lines modified | ||
| 3560 | ····································revocation_status_undetermined·| | 3560 | ····································revocation_status_undetermined·| |
| 3561 | ····································{revocation_status_undetermined,·Reason·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>()}·| | 3561 | ····································{revocation_status_undetermined,·Reason·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>()}·| |
| 3562 | ····································{revoked,·<a·href="#t:crl_reason/0">crl_reason</a>()}.</pre> | 3562 | ····································{revoked,·<a·href="#t:crl_reason/0">crl_reason</a>()}.</pre> |
| 3563 | ······</div> | 3563 | ······</div> |
| 3564 | <p>Performs·CRL·validation.·It·is·intended·to·be·called·from·the·verify·fun·of | 3564 | <p>Performs·CRL·validation.·It·is·intended·to·be·called·from·the·verify·fun·of |
| 3565 | <a·href="#pkix_path_validation/3">pkix_path_validation/3·</a>.</p><p>Available·options:</p><ul><li><p><strong>{update_crl,·fun()}</strong>·-·The·fun·has·the·following·type·specification:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="4 | 3565 | <a·href="#pkix_path_validation/3">pkix_path_validation/3·</a>.</p><p>Available·options:</p><ul><li><p><strong>{update_crl,·fun()}</strong>·-·The·fun·has·the·following·type·specification:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="7408516189-1">(</span><span·class="o">#</span><span·class="ss">'DistributionPoint'</span><span·class="p"·data-group-id="7408516189-2">{</span><span·class="p"·data-group-id="7408516189-2">}</span><span·class="p">,</span><span·class="w">·</span><span[·...·truncated·by·diffoscope;·len:·215,·SHA:·2381d17c2cfc12a5d5b6c50bd38782421c2313f3e141948791cc88c87f35f8fe·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 3566 | ········</span><span·class="o">#</span><span·class="ss">'CertificateList'</span><span·class="p"·data-group-id="4 | 3566 | ········</span><span·class="o">#</span><span·class="ss">'CertificateList'</span><span·class="p"·data-group-id="7408516189-4">{</span><span·class="p"·data-group-id="7408516189-4">}</span></code></pre><p>The·fun·uses·the·information·in·the·distribution·point·to·access·the·latest |
| 3567 | possible·version·of·the·CRL.·If·this·fun·is·not·specified,·Public·Key·uses·the | 3567 | possible·version·of·the·CRL.·If·this·fun·is·not·specified,·Public·Key·uses·the |
| 3568 | default·implementation:</p><pre><code·class="text">·fun(_DP,·CRL)·->·CRL·end</code></pre></li><li><p><strong>{issuer_fun,·{fun(),·UserState::term()}}</strong>·-·The·fun·has·the·following·type | 3568 | default·implementation:</p><pre><code·class="text">·fun(_DP,·CRL)·->·CRL·end</code></pre></li><li><p><strong>{issuer_fun,·{fun(),·UserState::term()}}</strong>·-·The·fun·has·the·following·type |
| 3569 | specification:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="p"·data-group-id=" | 3569 | specification:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="p"·data-group-id="3580872696-1">(</span><span·class="o">#</span><span·class="ss">'DistributionPoint'</span><span·class="p"·data-group-id="3580872696-2">{</span><span·class="p"·data-group-id="3580872696-2">}</span><span·class="p">,</span><span·class="w">·</span><span[·...·truncated·by·diffoscope;·len:·162,·SHA:·d1761c73d3d6420d3a4b1797b1b764a2b87d920204d2bc5b705f363a4d25883e·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 3570 | ····</span><span·class="p"·data-group-id="2651208359-4">{</span><span·class="ss">rdnSequence</span><span·class="p">,</span><span·class="p"·data-group-id="2651208359-5">[</span><span·class="o">#</span><span·class="ss">'AttributeTypeAndValue'</span><span·class="p"·data-group-id="2651208359-6">{</span><span·class="p"·data-group-id="2651208359-6">}</span><span·class="p"·data-group-id="2651208359-5">]</span><span·class="p"·data-group-id="2651208359-4">}</span><span·class="p">,</span><span·class="w">·</span><span·class="n">UserState</span><span·class="p">:</span><span·class="p">:</span><span·class="nf">term</span><span·class="p"·data-group-id="2651208359-7">(</span><span·class="p"·data-group-id="2651208359-7">)</span><span·class="p"·data-group-id="2651208359-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | ||
| 3571 | ··</span><span·class="p"·data-group-id=" | 3570 | ····</span><span·class="p"·data-group-id="3580872696-4">{</span><span·class="ss">rdnSequence</span><span·class="p">,</span><span·class="p"·data-group-id="3580872696-5">[</span><span·class="o">#</span><span·class="ss">'AttributeTypeAndValue'</span><sp[·...·truncated·by·diffoscope;·len:·592,·SHA:·5126505f3887683cd4260c0496221f4fd59369ed2ea4b8afc1e0e96dd11de7ba·...·] |
| 3571 | ··</span><span·class="p"·data-group-id="3580872696-8">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">'OTPCertificate'</span><span·class="p"·data-group-id="3580872696-9">{</span><span·class="p"·data-group-id="3580872696-9">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3580872696-10">[</span><span·class="ss">der_encoded</span><span·class="p"·data-group-id="3580872696-10">]</span><span·class="p"·data-group-id="3580872696-8">}</span></code></pre><p>The·fun·returns·the·root·certificate·and·certificate·chain·that·has·signed·the | ||
| 3572 | CRL.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="408 | 3572 | CRL.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="5430849730-1">(</span><span·class="n">DP</span><span·class="p">,</span><span·class="w">·</span><span·class="n">CRL</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Issuer</span><span·class="p">,</span><span·class="w">·</span><span·clas[·...·truncated·by·diffoscope;·len:·430,·SHA:·e8699c72047d556767179bbd3285ee23bb6d0ad05f3e96d79074c6211df24163·...·]-2">}</span></code></pre></li><li><p><strong>{undetermined_details,·boolean()}</strong>·-·Defaults·to·false.·When·revocation |
| 3573 | status·cannot·be·determined,·and·this·option·is·set·to·true,·details·of·why·no | 3573 | status·cannot·be·determined,·and·this·option·is·set·to·true,·details·of·why·no |
| 3574 | CRLs·where·accepted·are·included·in·the·return·value.</p></li></ul> | 3574 | CRLs·where·accepted·are·included·in·the·return·value.</p></li></ul> |
| 3575 | ··</section> | 3575 | ··</section> |
| 3576 | </section> | 3576 | </section> |
| 3577 | <section·class="detail"·id="pkix_dist_point/1"> | 3577 | <section·class="detail"·id="pkix_dist_point/1"> |
| 3578 | ··<div·class="detail-header"> | 3578 | ··<div·class="detail-header"> |
| Offset 3899, 26 lines modified | Offset 3899, 26 lines modified | ||
| 3899 | certificate,·but·makes·the·certificate·useful·for·both·roles.</p><p>Explanation·of·the·options·used·to·customize·certificates·in·the·generated | 3899 | certificate,·but·makes·the·certificate·useful·for·both·roles.</p><p>Explanation·of·the·options·used·to·customize·certificates·in·the·generated |
| 3900 | chains:</p><ul><li><p><strong>{digest,·digest_type()}</strong>·-·Hash·algorithm·to·be·used·for·signing·the | 3900 | chains:</p><ul><li><p><strong>{digest,·digest_type()}</strong>·-·Hash·algorithm·to·be·used·for·signing·the |
| 3901 | certificate·together·with·the·key·option.·Defaults·to·sha·that·is·sha1.</p></li><li><p><strong>{key,··ec_params()|·{rsa,·Size:pos_integer(),·Prime::pos_integer()}·|·private_key()}</strong>·-·Parameters·to·be·used·to·call | 3901 | certificate·together·with·the·key·option.·Defaults·to·sha·that·is·sha1.</p></li><li><p><strong>{key,··ec_params()|·{rsa,·Size:pos_integer(),·Prime::pos_integer()}·|·private_key()}</strong>·-·Parameters·to·be·used·to·call |
| 3902 | public_key:generate_key/1,·to·generate·a·key,·or·an·existing·key.·Defaults·to | 3902 | public_key:generate_key/1,·to·generate·a·key,·or·an·existing·key.·Defaults·to |
| 3903 | generating·an·ECDSA·key.·Note·this·could·fail·if·Erlang/OTP·is·compiled·with·a | 3903 | generating·an·ECDSA·key.·Note·this·could·fail·if·Erlang/OTP·is·compiled·with·a |
| 3904 | very·old·cryptolib.</p></li><li><p><strong>{validity,·{From::erlang:timestamp(),·To::erlang:timestamp()}}</strong>·-·The | 3904 | very·old·cryptolib.</p></li><li><p><strong>{validity,·{From::erlang:timestamp(),·To::erlang:timestamp()}}</strong>·-·The |
| 3905 | validity·period·of·the·certificate.</p></li><li><p><strong>{extensions,·[#'Extension'{}]}</strong>·-·Extensions·to·include·in·the | 3905 | validity·period·of·the·certificate.</p></li><li><p><strong>{extensions,·[#'Extension'{}]}</strong>·-·Extensions·to·include·in·the |
| 3906 | certificate.</p><p>Default·extensions·included·in·CA·certificates·if·not·otherwise·specified·are:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 3906 | certificate.</p><p>Default·extensions·included·in·CA·certificates·if·not·otherwise·specified·are:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8688538515-1">[</span><span·class="o">#</span><span·class="ss">'Extension'</span><span·class="p"·data-group-id="8688538515-2">{</span><span·class="ss">extnID</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">?</span><span·class="ss">'id-ce-keyUsage'</span><span·class="p">,</span><span·class="w"> |
| 3907 | ··············</span><span·class="ss">extnValue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 3907 | ··············</span><span·class="ss">extnValue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="8688538515-3">[</span><span·class="ss">keyCertSign</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">cRLSign</span><span·class="p"·data-group-id="8688538515-3">]</span><span·class="p">,</span><span·class="w"> |
| 3908 | ··············</span><span·class="ss">critical</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">false</span><span·class="p"·data-group-id="8688538515-2">}</span><span·class="p">,</span><span·class="w"> | ||
| 3909 | </span><span·class="o">#</span><span·class="ss">'Extension'</span><span·class="p"·data-group-id="8688538515-4">{</span><span·class="ss">extnID</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">?</span><span·class="ss">'id-ce-basicConstraints'</span><span·class="p">,</span><span·class="w"> | ||
| 3910 | ·············</span><span·class="ss">extnValue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">'BasicConstraints'</span><span·class="p"·data-group-id="8688538515-5">{</span><span·class="ss">cA</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">true</span><span·class="p"·data-group-id="8688538515-5">}</span><span·class="p">,</span><span·class="w"> | ||
| 3911 | ·············</span><span·class="ss">critical</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">true</span><span·class="p"·data-group-id="8688538515-4">}</span><span·class="p"·data-group-id="8688538515-1">]</span></code></pre><p>Default·extensions·included·in·the·server·peer·cert·if·not·otherwise·specified | ||
| 3912 | are:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="4460395216-1">[</span><span·class="o">#</span><span·class="ss">'Extension'</span><span·class="p"·data-group-id="4460395216-2">{</span><span·class="ss">extnID</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">?</span><span·class="ss">'id-ce-keyUsage'</span><span·class="p">,</span><span·class="w"> | ||
| 3913 | ··············</span><span·class="ss">extnValue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4460395216-3">[</span><span·class="ss">digitalSignature</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">keyAgreement</span><span·class="p"·data-group-id="4460395216-3">]</span><span·class="p">,</span><span·class="w"> | ||
| 3908 | ··············</span><span·class="ss">critical</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">false</span><span·class="p"·data-group-id=" | 3914 | ··············</span><span·class="ss">critical</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">false</span><span·class="p"·data-group-id="4460395216-2">}</span><span·class="p">,</span><span·class="w"> |
| 3909 | </span><span·class="o">#</span><span·class="ss">'Extension'</span><span·class="p"·data-group-id="3474687964-4">{</span><span·class="ss">extnID</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">?</span><span·class="ss">'id-ce-basicConstraints'</span><span·class="p">,</span><span·class="w"> | ||
| 3910 | ·············</span><span·class="ss">extnValue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">'BasicConstraints'</span><span·class="p"·data-group-id="3474687964-5">{</span><span·class="ss">cA</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">true</span><span·class="p"·data-group-id="3474687964-5">}</span><span·class="p">,</span><span·class="w"> | ||
| 3911 | ·············</span><span·class="ss">critical</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">true</span><span·class="p"·data-group-id="3474687964-4">}</span><span·class="p"·data-group-id="3474687964-1">]</span></code></pre><p>Default·extensions·included·in·the·server·peer·cert·if·not·otherwise·specified | ||
| 3912 | are:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="7037987543-1">[</span><span·class="o">#</span><span·class="ss">'Extension'</span><span·class="p"·data-group-id="7037987543-2">{</span><span·class="ss">extnID</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">?</span><span·class="ss">'id-ce-keyUsage'</span><span·class="p">,</span><span·class="w"> | ||
| 3913 | ··············</span><span·class="ss">extnValue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7037987543-3">[</span><span·class="ss">digitalSignature</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">keyAgreement</span><span·class="p"·data-group-id="7037987543-3">]</span><span·class="p">,</span><span·class="w"> | ||
| 3914 | ··············</span><span·class="ss">critical</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">false</span><span·class="p"·data-group-id="7037987543-2">}</span><span·class="p">,</span><span·class="w"> | ||
| 3915 | </span><span·class="o">#</span><span·class="ss">'Extension'</span><span·class="p"·data-group-id=" | 3915 | </span><span·class="o">#</span><span·class="ss">'Extension'</span><span·class="p"·data-group-id="4460395216-4">{</span><span·class="ss">extnID</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">?</span><span·class="ss">'id-ce-subjectAltName'</span><span·class="p">,</span><span·class="w"> |
| 3916 | ·············</span><span·class="ss">extnValue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 3916 | ·············</span><span·class="ss">extnValue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4460395216-5">[</span><span·class="p"·data-group-id="4460395216-6">{</span><span·class="ss">dNSName</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Hostname</span><span·class="p"·data-group-id="4460395216-6">}</span><span·class="p"·da[·...·truncated·by·diffoscope;·len:·23,·SHA:·4e866c682d9487a0344f892f29dc6c4c2a47d6fbce66dcdf6417f140bd9163f5·...·]-5">]</span><span·class="p">,</span><span·class="w"> |
| 3917 | ·············</span><span·class="ss">critical</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">false</span><span·class="p"·data-group-id=" | 3917 | ·············</span><span·class="ss">critical</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">false</span><span·class="p"·data-group-id="4460395216-4">}</span><span·class="p"·data-group-id="4460395216-1">]</span></code></pre><p>Hostname·is·the·result·of·calling·net_adm:localhost()·in·the·Erlang·node·where |
| 3918 | this·function·is·called.</p></li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Note·that·the·generated·certificates·and·keys·does·not·provide·a·formally | 3918 | this·function·is·called.</p></li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Note·that·the·generated·certificates·and·keys·does·not·provide·a·formally |
| 3919 | correct·PKIX-trust-chain·and·they·cannot·be·used·to·achieve·real·security. | 3919 | correct·PKIX-trust-chain·and·they·cannot·be·used·to·achieve·real·security. |
| 3920 | This·function·is·provided·for·testing·purposes·only.</p></section> | 3920 | This·function·is·provided·for·testing·purposes·only.</p></section> |
| 3921 | ··</section> | 3921 | ··</section> |
| 3922 | </section> | 3922 | </section> |
| 3923 | <section·class="detail"·id="pkix_test_root_cert/2"> | 3923 | <section·class="detail"·id="pkix_test_root_cert/2"> |
| Offset 125, 428 lines modified | Offset 125, 428 lines modified | ||
| 125 | ····<span>Public-Key·Records</span> | 125 | ····<span>Public-Key·Records</span> |
| 126 | ··</h1> | 126 | ··</h1> |
| 127 | <p>This·chapter·briefly·describes·Erlang·records·derived·from·ASN.1·specifications | 127 | <p>This·chapter·briefly·describes·Erlang·records·derived·from·ASN.1·specifications |
| 128 | used·to·handle·public·key·infrastructure.·The·scope·is·to·describe·the·data | 128 | used·to·handle·public·key·infrastructure.·The·scope·is·to·describe·the·data |
| 129 | types·of·each·component,·not·the·semantics.·For·information·on·the·semantics, | 129 | types·of·each·component,·not·the·semantics.·For·information·on·the·semantics, |
| 130 | refer·to·the·relevant·standards·and·RFCs·linked·in·the·sections·below.</p><p>Use·the·following·include·directive·to·get·access·to·the·records·and·constant | 130 | refer·to·the·relevant·standards·and·RFCs·linked·in·the·sections·below.</p><p>Use·the·following·include·directive·to·get·access·to·the·records·and·constant |
| 131 | macros·described·in·the·following·sections:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id=" | 131 | macros·described·in·the·following·sections:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="3281256682-1">(</span><span·class="s">"public_key/include/public_key.hrl"</span><span·class="p"·data-group-id="3281256682-1">)</span><span·class="p">.</span></code></pre><h2·id="data-types"·class="section-heading"> |
| 132 | ··<a·href="#data-types"·class="hover-link"> | 132 | ··<a·href="#data-types"·class="hover-link"> |
| 133 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 133 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 134 | ··</a> | 134 | ··</a> |
| 135 | ··<span·class="text">Data·Types</span> | 135 | ··<span·class="text">Data·Types</span> |
| 136 | </h2> | 136 | </h2> |
| 137 | <p>Common·non-standard·Erlang·data·types·used·to·describe·the·record·fields·in·the | 137 | <p>Common·non-standard·Erlang·data·types·used·to·describe·the·record·fields·in·the |
| 138 | following·sections·and·which·are·not·defined·in·the·Public·Key | 138 | following·sections·and·which·are·not·defined·in·the·Public·Key |
| 139 | <a·href="public_key.html">Reference·Manual</a>·follows·here:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">time</span><span·class="p"·data-group-id=" | 139 | <a·href="public_key.html">Reference·Manual</a>·follows·here:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">time</span><span·class="p"·data-group-id="7049867764-1">(</span><span·class="p"·data-group-id="7049867764-1">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">utc_time</span><span·class="p"·data-group-id="7049867764-2">(</span><span·class="p"·data-gro[·...·truncated·by·diffoscope;·len:·231,·SHA:·acf9aadea392aaf13f1cbe540554873f07a71b58def8741c7d79c1b107da7d89·...·]-3">)</span><span·class="w"> |
| 140 | </span><span·class="nf">utc_time</span><span·class="p"·data-group-id=" | 140 | </span><span·class="nf">utc_time</span><span·class="p"·data-group-id="7049867764-4">(</span><span·class="p"·data-group-id="7049867764-4">)</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7049867764-5">{</span><span·class="ss">utcTime</span><span·class="p">,</span>[·...·truncated·by·diffoscope;·len:·113,·SHA:·e23c3741efec3f296556577c5206d9269976400cfec3166037d51295c41b60cf·...·]-5">}</span><span·class="w"> |
| 141 | </span><span·class="nf">general_time</span><span·class="p"·data-group-id=" | 141 | </span><span·class="nf">general_time</span><span·class="p"·data-group-id="7049867764-6">(</span><span·class="p"·data-group-id="7049867764-6">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7049867764-7">{</span><span·class="ss">generalTime</span><span·class="p">,</sp[·...·truncated·by·diffoscope;·len:·118,·SHA:·053bcb9ec7f77aaaad380ee6c1731067fb48b8643cd3c2f5be7ba86dbed5cf4b·...·]-7">}</span><span·class="w"> |
| 142 | </span><span·class="nf">general_name</span><span·class="p"·data-group-id=" | 142 | </span><span·class="nf">general_name</span><span·class="p"·data-group-id="7049867764-8">(</span><span·class="p"·data-group-id="7049867764-8">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7049867764-9">{</span><span·class="ss">rfc822Name</span><span·class="p">,</spa[·...·truncated·by·diffoscope;·len:·205,·SHA:·62d208c1e09c543561c469e5ed2f8be416354b7219cf070c73c804c908015341·...·]-9">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 143 | ·················</span><span·class="p"·data-group-id=" | 143 | ·················</span><span·class="p"·data-group-id="7049867764-11">{</span><span·class="ss">dNSName</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">string</span><span·class="p"·data-group-id="7049867764-12">(</span><span·class="p"·data-group-id="7049867764-12">)</span><span·class="p"·[·...·truncated·by·diffoscope;·len:·25,·SHA:·16d0903870d6292452335d7cef92dbb504fb4a1b7201e43f4bf81dffbcdf89e1·...·]-11">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 144 | ·················</span><span·class="p"·data-group-id=" | 144 | ·················</span><span·class="p"·data-group-id="7049867764-13">{</span><span·class="ss">x400Address</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">string</span><span·class="p"·data-group-id="7049867764-14">(</span><span·class="p"·data-group-id="7049867764-14">)</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 145 | ·················</span><span·class="p"·data-group-id=" | 145 | ·················</span><span·class="p"·data-group-id="7049867764-15">{</span><span·class="ss">directoryName</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7049867764-16">{</span><span·class="ss">rdnSequence</span><span·class="p">,</span><span·class="w">·</span><span·class[·...·truncated·by·diffoscope;·len:·379,·SHA:·e248e82fce3caa0d7ec0ebe4d9b372b9f1d35835ab84717116d0f683cd0e660c·...·]-15">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 146 | ·················</span><span·class="p"·data-group-id=" | 146 | ·················</span><span·class="p"·data-group-id="7049867764-19">{</span><span·class="ss">ediPartyName</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">special_string</span><span·class="p"·data-group-id="7049867764-20">(</span><span·class="p"·data-group-id="7049867764-20">)</span><sp[·...·truncated·by·diffoscope;·len:·38,·SHA:·b101a18704042aa3b0a9a14d874c44c8abf5dd4d51df197e014424dbf49579eb·...·]-19">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 147 | ·················</span><span·class="p"·data-group-id=" | 147 | ·················</span><span·class="p"·data-group-id="7049867764-21">{</span><span·class="ss">ediPartyName</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">special_string</span><span·class="p"·data-group-id="7049867764-22">(</span><span·class="p"·data-group-id="7049867764-22">)</span><sp[·...·truncated·by·diffoscope;·len:·232,·SHA:·73ffb7d23956fd36f2611b18999473253d22a5992f312a3ea986a1cbff1989b6·...·]-21">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 148 | ·················</span><span·class="p"·data-group-id=" | 148 | ·················</span><span·class="p"·data-group-id="7049867764-24">{</span><span·class="ss">uniformResourceIdentifier</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">string</span><span·class="p"·data-group-id="7049867764-25">(</span><span·class="p"·data-group-id="7049867764-25">)</spa[·...·truncated·by·diffoscope;·len:·43,·SHA:·0ac9e368e5003369c2e7709da0ef76dbd8bfa2eb9e9110721701edf4ea14faff·...·]-24">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 149 | ·················</span><span·class="p"·data-group-id=" | 149 | ·················</span><span·class="p"·data-group-id="7049867764-26">{</span><span·class="ss">iPAddress</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">string</span><span·class="p"·data-group-id="7049867764-27">(</span><span·class="p"·data-group-id="7049867764-27">)</span><span·class="p[·...·truncated·by·diffoscope;·len:·27,·SHA:·d83e72f95fa5396b8addc12277b9fec1936360fab2115d53df0dff251c730098·...·]-26">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 150 | ·················</span><span·class="p"·data-group-id=" | 150 | ·················</span><span·class="p"·data-group-id="7049867764-28">{</span><span·class="ss">registeredId</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">oid</span><span·class="p"·data-group-id="7049867764-29">(</span><span·class="p"·data-group-id="7049867764-29">)</span><span·class="p[·...·truncated·by·diffoscope;·len:·27,·SHA:·d83e72f95fa5396b8addc12277b9fec1936360fab2115d53df0dff251c730098·...·]-28">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 151 | ·················</span><span·class="p"·data-group-id=" | 151 | ·················</span><span·class="p"·data-group-id="7049867764-30">{</span><span·class="ss">otherName</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id="7049867764-31">(</span><span·class="p"·data-group-id="7049867764-31">)</span><span·class="p"·[·...·truncated·by·diffoscope;·len:·25,·SHA:·16d0903870d6292452335d7cef92dbb504fb4a1b7201e43f4bf81dffbcdf89e1·...·]-30">}</span><span·class="w"> |
| 152 | </span><span·class="nf">special_string</span><span·class="p"·data-group-id=" | 152 | </span><span·class="nf">special_string</span><span·class="p"·data-group-id="7049867764-32">(</span><span·class="p"·data-group-id="7049867764-32">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7049867764-33">{</span><span·class="ss">teletexString</span><span·class="p">[·...·truncated·by·diffoscope;·len:·211,·SHA:·741b9c130a28cae6500cb3bf378053af7b5ab16c7cff71145836dfb4313c9553·...·]-33">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 153 | · | 153 | · |
| 154 | ···················</span><span·class="p"·data-group-id=" | 154 | ···················</span><span·class="p"·data-group-id="7049867764-35">{</span><span·class="ss">printableString</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">string</span><span·class="p"·data-group-id="7049867764-36">(</span><span·class="p"·data-group-id="7049867764-36">)</span><span·cl[·...·truncated·by·diffoscope;·len:·33,·SHA:·8f518a305720a25c39fe7f5c8c716d74ec516c1fdb4240b51aa2b12ca6390eba·...·]-35">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 155 | ···················</span><span·class="p"·data-group-id=" | 155 | ···················</span><span·class="p"·data-group-id="7049867764-37">{</span><span·class="ss">universalString</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">string</span><span·class="p"·data-group-id="7049867764-38">(</span><span·class="p"·data-group-id="7049867764-38">)</span><span·cl[·...·truncated·by·diffoscope;·len:·33,·SHA:·8f518a305720a25c39fe7f5c8c716d74ec516c1fdb4240b51aa2b12ca6390eba·...·]-37">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 156 | ···················</span><span·class="p"·data-group-id=" | 156 | ···················</span><span·class="p"·data-group-id="7049867764-39">{</span><span·class="ss">utf8String</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">binary</span><span·class="p"·data-group-id="7049867764-40">(</span><span·class="p"·data-group-id="7049867764-40">)</span><span·class="[·...·truncated·by·diffoscope;·len:·28,·SHA:·6c1a78b3cf5e700496e8eea7cda7ae8665047255da3a90f2fa0bcaabc4b75b1a·...·]-39">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 157 | ···················</span><span·class="p"·data-group-id=" | 157 | ···················</span><span·class="p"·data-group-id="7049867764-41">{</span><span·class="ss">bmpString</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">string</span><span·class="p"·data-group-id="7049867764-42">(</span><span·class="p"·data-group-id="7049867764-42">)</span><span·class="p[·...·truncated·by·diffoscope;·len:·27,·SHA:·d83e72f95fa5396b8addc12277b9fec1936360fab2115d53df0dff251c730098·...·]-41">}</span><span·class="w"> |
| 158 | </span><span·class="nf">dist_reason</span><span·class="p"·data-group-id=" | 158 | </span><span·class="nf">dist_reason</span><span·class="p"·data-group-id="7049867764-43">(</span><span·class="p"·data-group-id="7049867764-43">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">unused</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">keyCompromise</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">cACompromise</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">affiliationChanged</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 159 | ················</span><span·class="ss">cessationOfOperation</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">certificateHold</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">privilegeWithdrawn</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">aACompromise</span><span·class="w"> | 159 | ················</span><span·class="ss">cessationOfOperation</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">certificateHold</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">privilegeWithdrawn</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">aACompromise</span><span·class="w"> |
| 160 | </span><span·class="n">OID_macro</span><span·class="p"·data-group-id=" | 160 | </span><span·class="n">OID_macro</span><span·class="p"·data-group-id="7049867764-44">(</span><span·class="p"·data-group-id="7049867764-44">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">?</span><span·class="n">OID_name</span><span·class="p"·data-group-id="7049867764-45">(</spa[·...·truncated·by·diffoscope;·len:·43,·SHA:·0ac9e368e5003369c2e7709da0ef76dbd8bfa2eb9e9110721701edf4ea14faff·...·]-45">)</span><span·class="w"> |
| 161 | </span><span·class="n">OID_name</span><span·class="p"·data-group-id=" | 161 | </span><span·class="n">OID_name</span><span·class="p"·data-group-id="7049867764-46">(</span><span·class="p"·data-group-id="7049867764-46">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="7049867764-47">(</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·16,·SHA:·611140d25aad76e08835c757a665a155666f0bcd6b230414bea4a5666c6b82a9·...·]-47">)</span></code></pre><h2·id="rsa"·class="section-heading"> |
| 162 | ··<a·href="#rsa"·class="hover-link"> | 162 | ··<a·href="#rsa"·class="hover-link"> |
| 163 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 163 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 164 | ··</a> | 164 | ··</a> |
| 165 | ··<span·class="text">RSA</span> | 165 | ··<span·class="text">RSA</span> |
| 166 | </h2> | 166 | </h2> |
| 167 | <p>Erlang·representation·of | 167 | <p>Erlang·representation·of |
| 168 | <a·href="http://www.ietf.org/rfc/rfc3447.txt">Rivest-Shamir-Adleman·cryptosystem·(RSA)</a> | 168 | <a·href="http://www.ietf.org/rfc/rfc3447.txt">Rivest-Shamir-Adleman·cryptosystem·(RSA)</a> |
| 169 | keys·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">#</span><span·class="ss">'RSAPublicKey'</span><span·class="p"·data-group-id=" | 169 | keys·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">#</span><span·class="ss">'RSAPublicKey'</span><span·class="p"·data-group-id="5745223415-1">{</span><span·class="w"> |
| 170 | ···</span><span·class="ss">modulus</span><span·class="p">,</span><span·class="w">·······</span><span·class="c1">%·pos_integer()</span><span·class="w"> | 170 | ···</span><span·class="ss">modulus</span><span·class="p">,</span><span·class="w">·······</span><span·class="c1">%·pos_integer()</span><span·class="w"> |
| 171 | ···</span><span·class="ss">publicExponent</span><span·class="w">·</span><span·class="c1">%·pos_integer()</span><span·class="w"> | 171 | ···</span><span·class="ss">publicExponent</span><span·class="w">·</span><span·class="c1">%·pos_integer()</span><span·class="w"> |
| 172 | ··</span><span·class="p"·data-group-id=" | 172 | ··</span><span·class="p"·data-group-id="5745223415-1">}</span><span·class="p">.</span><span·class="w"> |
| 173 | </span><span·class="o">#</span><span·class="ss">'RSAPrivateKey'</span><span·class="p"·data-group-id=" | 173 | </span><span·class="o">#</span><span·class="ss">'RSAPrivateKey'</span><span·class="p"·data-group-id="5745223415-2">{</span><span·class="w"> |
| 174 | ···</span><span·class="ss">version</span><span·class="p">,</span><span·class="w">·········</span><span·class="c1">%·two-prime·|·multi</span><span·class="w"> | 174 | ···</span><span·class="ss">version</span><span·class="p">,</span><span·class="w">·········</span><span·class="c1">%·two-prime·|·multi</span><span·class="w"> |
| 175 | ···</span><span·class="ss">modulus</span><span·class="p">,</span><span·class="w">·········</span><span·class="c1">%·pos_integer()</span><span·class="w"> | 175 | ···</span><span·class="ss">modulus</span><span·class="p">,</span><span·class="w">·········</span><span·class="c1">%·pos_integer()</span><span·class="w"> |
| 176 | ···</span><span·class="ss">publicExponent</span><span·class="p">,</span><span·class="w">··</span><span·class="c1">%·pos_integer()</span><span·class="w"> | 176 | ···</span><span·class="ss">publicExponent</span><span·class="p">,</span><span·class="w">··</span><span·class="c1">%·pos_integer()</span><span·class="w"> |
| 177 | ···</span><span·class="ss">privateExponent</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%·pos_integer()</span><span·class="w"> | 177 | ···</span><span·class="ss">privateExponent</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%·pos_integer()</span><span·class="w"> |
| 178 | ···</span><span·class="ss">prime1</span><span·class="p">,</span><span·class="w">··········</span><span·class="c1">%·pos_integer()</span><span·class="w"> | 178 | ···</span><span·class="ss">prime1</span><span·class="p">,</span><span·class="w">··········</span><span·class="c1">%·pos_integer()</span><span·class="w"> |
| 179 | ···</span><span·class="ss">prime2</span><span·class="p">,</span><span·class="w">··········</span><span·class="c1">%·pos_integer()</span><span·class="w"> | 179 | ···</span><span·class="ss">prime2</span><span·class="p">,</span><span·class="w">··········</span><span·class="c1">%·pos_integer()</span><span·class="w"> |
| 180 | ···</span><span·class="ss">exponent1</span><span·class="p">,</span><span·class="w">·······</span><span·class="c1">%·pos_integer()</span><span·class="w"> | 180 | ···</span><span·class="ss">exponent1</span><span·class="p">,</span><span·class="w">·······</span><span·class="c1">%·pos_integer()</span><span·class="w"> |
| 181 | ···</span><span·class="ss">exponent2</span><span·class="p">,</span><span·class="w">·······</span><span·class="c1">%·pos_integer()</span><span·class="w"> | 181 | ···</span><span·class="ss">exponent2</span><span·class="p">,</span><span·class="w">·······</span><span·class="c1">%·pos_integer()</span><span·class="w"> |
| 182 | ···</span><span·class="ss">coefficient</span><span·class="p">,</span><span·class="w">·····</span><span·class="c1">%·pos_integer()</span><span·class="w"> | 182 | ···</span><span·class="ss">coefficient</span><span·class="p">,</span><span·class="w">·····</span><span·class="c1">%·pos_integer()</span><span·class="w"> |
| 183 | ···</span><span·class="ss">otherPrimeInfos</span><span·class="w">··</span><span·class="c1">%·[#OtherPrimeInfo{}]·|·asn1_NOVALUE</span><span·class="w"> | 183 | ···</span><span·class="ss">otherPrimeInfos</span><span·class="w">··</span><span·class="c1">%·[#OtherPrimeInfo{}]·|·asn1_NOVALUE</span><span·class="w"> |
| 184 | ··</span><span·class="p"·data-group-id=" | 184 | ··</span><span·class="p"·data-group-id="5745223415-2">}</span><span·class="p">.</span><span·class="w"> |
| 185 | </span><span·class="o">#</span><span·class="ss">'OtherPrimeInfo'</span><span·class="p"·data-group-id=" | 185 | </span><span·class="o">#</span><span·class="ss">'OtherPrimeInfo'</span><span·class="p"·data-group-id="5745223415-3">{</span><span·class="w"> |
| 186 | ···</span><span·class="ss">prime</span><span·class="p">,</span><span·class="w">···········</span><span·class="c1">%·pos_integer()</span><span·class="w"> | 186 | ···</span><span·class="ss">prime</span><span·class="p">,</span><span·class="w">···········</span><span·class="c1">%·pos_integer()</span><span·class="w"> |
| 187 | ···</span><span·class="ss">exponent</span><span·class="p">,</span><span·class="w">········</span><span·class="c1">%·pos_integer()</span><span·class="w"> | 187 | ···</span><span·class="ss">exponent</span><span·class="p">,</span><span·class="w">········</span><span·class="c1">%·pos_integer()</span><span·class="w"> |
| 188 | ···</span><span·class="ss">coefficient</span><span·class="w">······</span><span·class="c1">%·pos_integer()</span><span·class="w"> | 188 | ···</span><span·class="ss">coefficient</span><span·class="w">······</span><span·class="c1">%·pos_integer()</span><span·class="w"> |
| 189 | ··</span><span·class="p"·data-group-id=" | 189 | ··</span><span·class="p"·data-group-id="5745223415-3">}</span><span·class="p">.</span><span·class="w"> |
| 190 | </span><span·class="o">#</span><span·class="ss">'RSASSA-PSS-params'</span><span·class="p"·data-group-id=" | 190 | </span><span·class="o">#</span><span·class="ss">'RSASSA-PSS-params'</span><span·class="p"·data-group-id="5745223415-4">{</span><span·class="w"> |
| 191 | ···</span><span·class="ss">hashAlgorithm</span><span·class="p">,</span><span·class="w">·····</span><span·class="c1">%·#'HashAlgorithm'{}},</span><span·class="w"> | 191 | ···</span><span·class="ss">hashAlgorithm</span><span·class="p">,</span><span·class="w">·····</span><span·class="c1">%·#'HashAlgorithm'{}},</span><span·class="w"> |
| 192 | ···</span><span·class="ss">maskGenAlgorithm</span><span·class="p">,</span><span·class="w">··</span><span·class="c1">%·#'MaskGenAlgorithm'{}},</span><span·class="w"> | 192 | ···</span><span·class="ss">maskGenAlgorithm</span><span·class="p">,</span><span·class="w">··</span><span·class="c1">%·#'MaskGenAlgorithm'{}},</span><span·class="w"> |
| 193 | ···</span><span·class="ss">saltLength</span><span·class="p">,</span><span·class="w">········</span><span·class="c1">%·pos_integer(),</span><span·class="w"> | 193 | ···</span><span·class="ss">saltLength</span><span·class="p">,</span><span·class="w">········</span><span·class="c1">%·pos_integer(),</span><span·class="w"> |
| 194 | ···</span><span·class="ss">trailerField</span><span·class="p">,</span><span·class="w">······</span><span·class="c1">%·pos_integer()</span><span·class="w"> | 194 | ···</span><span·class="ss">trailerField</span><span·class="p">,</span><span·class="w">······</span><span·class="c1">%·pos_integer()</span><span·class="w"> |
| 195 | ··</span><span·class="p"·data-group-id=" | 195 | ··</span><span·class="p"·data-group-id="5745223415-4">}</span><span·class="p">.</span><span·class="w"> |
| 196 | </span><span·class="o">#</span><span·class="ss">'HashAlgorithm'</span><span·class="p"·data-group-id=" | 196 | </span><span·class="o">#</span><span·class="ss">'HashAlgorithm'</span><span·class="p"·data-group-id="5745223415-5">{</span><span·class="w"> |
| 197 | ···</span><span·class="ss">algorithm</span><span·class="p">,</span><span·class="w">··</span><span·class="c1">%·oid()</span><span·class="w"> | 197 | ···</span><span·class="ss">algorithm</span><span·class="p">,</span><span·class="w">··</span><span·class="c1">%·oid()</span><span·class="w"> |
| 198 | ···</span><span·class="ss">parameters</span><span·class="w">··</span><span·class="c1">%·defaults·to·asn1_NOVALUE</span><span·class="w"> | 198 | ···</span><span·class="ss">parameters</span><span·class="w">··</span><span·class="c1">%·defaults·to·asn1_NOVALUE</span><span·class="w"> |
| 199 | ··</span><span·class="p"·data-group-id=" | 199 | ··</span><span·class="p"·data-group-id="5745223415-5">}</span><span·class="p">.</span><span·class="w"> |
| 200 | </span><span·class="o">#</span><span·class="ss">'MaskGenAlgorithm'</span><span·class="p"·data-group-id=" | 200 | </span><span·class="o">#</span><span·class="ss">'MaskGenAlgorithm'</span><span·class="p"·data-group-id="5745223415-6">{</span><span·class="w"> |
| 201 | ···</span><span·class="ss">algorithm</span><span·class="p">,</span><span·class="w">··</span><span·class="c1">%·oid()</span><span·class="w"> | 201 | ···</span><span·class="ss">algorithm</span><span·class="p">,</span><span·class="w">··</span><span·class="c1">%·oid()</span><span·class="w"> |
| 202 | ···</span><span·class="ss">parameters</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%·defaults·to·asn1_NOVALUE</span><span·class="w"> | 202 | ···</span><span·class="ss">parameters</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%·defaults·to·asn1_NOVALUE</span><span·class="w"> |
| 203 | ··</span><span·class="p"·data-group-id=" | 203 | ··</span><span·class="p"·data-group-id="5745223415-6">}</span><span·class="p">.</span></code></pre><h2·id="dsa"·class="section-heading"> |
| 204 | ··<a·href="#dsa"·class="hover-link"> | 204 | ··<a·href="#dsa"·class="hover-link"> |
| 205 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 205 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 206 | ··</a> | 206 | ··</a> |
| 207 | ··<span·class="text">DSA</span> | 207 | ··<span·class="text">DSA</span> |
| 208 | </h2> | 208 | </h2> |
| 209 | <p>Erlang·representation·of | 209 | <p>Erlang·representation·of |
| 210 | <a·href="http://www.ietf.org/rfc/rfc6979.txt">Digital·Signature·Algorithm·(DSA)</a>·keys</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">#</span><span·class="ss">'DSAPrivateKey'</span><span·class="p"·data-group-id=" | 210 | <a·href="http://www.ietf.org/rfc/rfc6979.txt">Digital·Signature·Algorithm·(DSA)</a>·keys</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">#</span><span·class="ss">'DSAPrivateKey'</span><span·class="p"·data-group-id="1106098476-1">{</span><span·class="w"> |
| 211 | ···</span><span·class="ss">version</span><span·class="p">,</span><span·class="w">······</span><span·class="c1">%·pos_integer()</span><span·class="w"> | 211 | ···</span><span·class="ss">version</span><span·class="p">,</span><span·class="w">······</span><span·class="c1">%·pos_integer()</span><span·class="w"> |
| 212 | ···</span><span·class="ss">p</span><span·class="p">,</span><span·class="w">············</span><span·class="c1">%·pos_integer()</span><span·class="w"> | 212 | ···</span><span·class="ss">p</span><span·class="p">,</span><span·class="w">············</span><span·class="c1">%·pos_integer()</span><span·class="w"> |
| 213 | ···</span><span·class="ss">q</span><span·class="p">,</span><span·class="w">············</span><span·class="c1">%·pos_integer()</span><span·class="w"> | 213 | ···</span><span·class="ss">q</span><span·class="p">,</span><span·class="w">············</span><span·class="c1">%·pos_integer()</span><span·class="w"> |
| 214 | ···</span><span·class="ss">g</span><span·class="p">,</span><span·class="w">············</span><span·class="c1">%·pos_integer()</span><span·class="w"> | 214 | ···</span><span·class="ss">g</span><span·class="p">,</span><span·class="w">············</span><span·class="c1">%·pos_integer()</span><span·class="w"> |
| 215 | ···</span><span·class="ss">y</span><span·class="p">,</span><span·class="w">············</span><span·class="c1">%·pos_integer()</span><span·class="w"> | 215 | ···</span><span·class="ss">y</span><span·class="p">,</span><span·class="w">············</span><span·class="c1">%·pos_integer()</span><span·class="w"> |
| 216 | ···</span><span·class="ss">x</span><span·class="w">·············</span><span·class="c1">%·pos_integer()</span><span·class="w"> | 216 | ···</span><span·class="ss">x</span><span·class="w">·············</span><span·class="c1">%·pos_integer()</span><span·class="w"> |
| 217 | ··</span><span·class="p"·data-group-id=" | 217 | ··</span><span·class="p"·data-group-id="1106098476-1">}</span><span·class="p">.</span><span·class="w"> |
| 218 | </span><span·class="o">#</span><span·class="ss">'Dss-Parms'</span><span·class="p"·data-group-id=" | 218 | </span><span·class="o">#</span><span·class="ss">'Dss-Parms'</span><span·class="p"·data-group-id="1106098476-2">{</span><span·class="w"> |
| 219 | ···</span><span·class="ss">p</span><span·class="p">,</span><span·class="w">·········</span><span·class="c1">%·pos_integer()</span><span·class="w"> | 219 | ···</span><span·class="ss">p</span><span·class="p">,</span><span·class="w">·········</span><span·class="c1">%·pos_integer()</span><span·class="w"> |
| 220 | ···</span><span·class="ss">q</span><span·class="p">,</span><span·class="w">·········</span><span·class="c1">%·pos_integer()</span><span·class="w"> | 220 | ···</span><span·class="ss">q</span><span·class="p">,</span><span·class="w">·········</span><span·class="c1">%·pos_integer()</span><span·class="w"> |
| 221 | ···</span><span·class="ss">g</span><span·class="w">··········</span><span·class="c1">%·pos_integer()</span><span·class="w"> | 221 | ···</span><span·class="ss">g</span><span·class="w">··········</span><span·class="c1">%·pos_integer()</span><span·class="w"> |
| 222 | ··</span><span·class="p"·data-group-id=" | 222 | ··</span><span·class="p"·data-group-id="1106098476-2">}</span><span·class="p">.</span></code></pre><h2·id="ecdsa-and-eddsa"·class="section-heading"> |
| 223 | ··<a·href="#ecdsa-and-eddsa"·class="hover-link"> | 223 | ··<a·href="#ecdsa-and-eddsa"·class="hover-link"> |
| 224 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 224 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 225 | ··</a> | 225 | ··</a> |
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| 144 | ignored.·Attributes,·if·present,·are·ignored·except·for·<code·class="inline">Proc-Type</code>·and | 144 | ignored.·Attributes,·if·present,·are·ignored·except·for·<code·class="inline">Proc-Type</code>·and |
| 145 | <code·class="inline">DEK-Info</code>,·which·are·used·when·<code·class="inline">DER</code>·data·is·encrypted.</p><h3·id="dsa-private-key"·class="section-heading"> | 145 | <code·class="inline">DEK-Info</code>,·which·are·used·when·<code·class="inline">DER</code>·data·is·encrypted.</p><h3·id="dsa-private-key"·class="section-heading"> |
| 146 | ··<a·href="#dsa-private-key"·class="hover-link"> | 146 | ··<a·href="#dsa-private-key"·class="hover-link"> |
| 147 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 147 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 148 | ··</a> | 148 | ··</a> |
| 149 | ··<span·class="text">DSA·Private·Key</span> | 149 | ··<span·class="text">DSA·Private·Key</span> |
| 150 | </h3> | 150 | </h3> |
| 151 | <p>A·DSA·private·key·can·look·as·follows:</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>File·handling·is·not·done·by·the·Public·Key·application.</p></section><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="p"·data-group-id=" | 151 | <p>A·DSA·private·key·can·look·as·follows:</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>File·handling·is·not·done·by·the·Public·Key·application.</p></section><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="p"·data-group-id="6144431208-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">PemBin</span><span·class="p"·data-group-id="6144431208-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·[·...·truncated·by·diffoscope;·len:·215,·SHA:·40ddb83905e74631a6265a23e55140909c21b9b285d3b2b3feb994ca3feb6980·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 152 | </span><span·class="p"·data-group-id=" | 152 | </span><span·class="p"·data-group-id="6144431208-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="6144431208-4"><<</span><span·class="s">"-----BEGIN·DSA·PRIVATE·KEY-----\nMIIBuw"</span><span·class="p">.</span><span·class="p">.</span><s[·...·truncated·by·diffoscope;·len:·741,·SHA:·3bde557251a573389aab47f2969bebda75dabb268aafc93068c837974e8387bd·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 153 | </span><span·class="p"·data-group-id=" | 153 | </span><span·class="p"·data-group-id="0738161967-3">[</span><span·class="p"·data-group-id="0738161967-4">{</span><span·class="ss">'DSAPrivateKey'</span><span·class="p">,</span><span·class="p"·data-group-id="0738161967-5"><<</span><span·class="mi">48</span><span·class="p">,</span><span·class="mi">130</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">187</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">129</span><span·class="p">,</span><span·class="mi">129</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">183</span><span·class="p">,</span><span·class="w"> |
| 154 | ····················</span><span·class="mi">179</span><span·class="p">,</span><span·class="mi">230</span><span·class="p">,</span><span·class="mi">217</span><span·class="p">,</span><span·class="mi">37</span><span·class="p">,</span><span·class="mi">99</span><span·class="p">,</span><span·class="mi">144</span><span·class="p">,</span><span·class="mi">157</span><span·class="p">,</span><span·class="mi">21</span><span·class="p">,</span><span·class="mi">228</span><span·class="p">,</span><span·class="mi">204</span><span·class="p">,</span><span·class="w"> | 154 | ····················</span><span·class="mi">179</span><span·class="p">,</span><span·class="mi">230</span><span·class="p">,</span><span·class="mi">217</span><span·class="p">,</span><span·class="mi">37</span><span·class="p">,</span><span·class="mi">99</span><span·class="p">,</span><span·class="mi">144</span><span·class="p">,</span><span·class="mi">157</span><span·class="p">,</span><span·class="mi">21</span><span·class="p">,</span><span·class="mi">228</span><span·class="p">,</span><span·class="mi">204</span><span·class="p">,</span><span·class="w"> |
| 155 | ····················</span><span·class="mi">162</span><span·class="p">,</span><span·class="mi">207</span><span·class="p">,</span><span·class="mi">61</span><span·class="p">,</span><span·class="mi">246</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id=" | 155 | ····················</span><span·class="mi">162</span><span·class="p">,</span><span·class="mi">207</span><span·class="p">,</span><span·class="mi">61</span><span·class="p">,</span><span·class="mi">246</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="0738161967-5">>></span><span·class="p">,</span><span·class="w"> |
| 156 | ····················</span><span·class="ss">not_encrypted</span><span·class="p"·data-group-id=" | 156 | ····················</span><span·class="ss">not_encrypted</span><span·class="p"·data-group-id="0738161967-4">}</span><span·class="p"·data-group-id="0738161967-3">]</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="n">Key</span><span·class="w">·</span><span·class="o">=</span><sp[·...·truncated·by·diffoscope;·len:·244,·SHA:·8eb23d06a2ca6fcc9c677ececd7a1eebc31513bca889f917688d59cbf68e9617·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 157 | </span><span·class="o">#</span><span·class="ss">'DSAPrivateKey'</span><span·class="p"·data-group-id=" | 157 | </span><span·class="o">#</span><span·class="ss">'DSAPrivateKey'</span><span·class="p"·data-group-id="3608993634-2">{</span><span·class="ss">version</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">,</span><span·class="w"> |
| 158 | ·················</span><span·class="ss">p</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">12900045185019966618</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">6593</span><span·class="p">,</span><span·class="w"> | 158 | ·················</span><span·class="ss">p</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">12900045185019966618</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">6593</span><span·class="p">,</span><span·class="w"> |
| 159 | ·················</span><span·class="ss">q</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">1216700114794736143432235288305776850295620488937</span><span·class="p">,</span><span·class="w"> | 159 | ·················</span><span·class="ss">q</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">1216700114794736143432235288305776850295620488937</span><span·class="p">,</span><span·class="w"> |
| 160 | ·················</span><span·class="ss">g</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">10442040227452349332</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">47213</span><span·class="p">,</span><span·class="w"> | 160 | ·················</span><span·class="ss">g</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">10442040227452349332</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">47213</span><span·class="p">,</span><span·class="w"> |
| 161 | ·················</span><span·class="ss">y</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">87256807980030509074</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">403143</span><span·class="p">,</span><span·class="w"> | 161 | ·················</span><span·class="ss">y</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">87256807980030509074</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">403143</span><span·class="p">,</span><span·class="w"> |
| 162 | ·················</span><span·class="ss">x</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">510968529856012146351317363807366575075645839654</span><span·class="p"·data-group-id=" | 162 | ·················</span><span·class="ss">x</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">510968529856012146351317363807366575075645839654</span><span·class="p"·data-group-id="3608993634-2">}</span></code></pre><h3·id="rsa-private-key-with-password"·class="section-heading"> |
| 163 | ··<a·href="#rsa-private-key-with-password"·class="hover-link"> | 163 | ··<a·href="#rsa-private-key-with-password"·class="hover-link"> |
| 164 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 164 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 165 | ··</a> | 165 | ··</a> |
| 166 | ··<span·class="text">RSA·Private·Key·with·Password</span> | 166 | ··<span·class="text">RSA·Private·Key·with·Password</span> |
| 167 | </h3> | 167 | </h3> |
| 168 | <p>An·RSA·private·key·encrypted·with·a·password·can·look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="p"·data-group-id="7383740852-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">PemBin</span><span·class="p"·data-group-id="7383740852-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">read_file</span><span·class="p"·data-group-id="7383740852-2">(</span><span·class="s">"rsa.pem"</span><span·class="p"·data-group-id="7383740852-2">)</span><span·class="p">.</span><span·class="w"> | ||
| 169 | < | 168 | <p>An·RSA·private·key·encrypted·with·a·password·can·look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="p"·data-group-id="0957370508-1">{</span><span·class="ss">ok</span><span·class="p"[·...·truncated·by·diffoscope;·len:·408,·SHA:·045d1a3ea7e91bb1ac017789727e9a5ff8928f4ea9d6072ad36ef10097e9f3e5·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 169 | </span><span·class="p"·data-group-id="0957370508-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="0957370508-4"><<</span><span·class="s">"Bag·Attribute"</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="0957370508-4">>></span><span·class="p"·data-group-id="0957370508-3">}</span></code></pre><p>The·following·PEM·file·has·only·one·entry,·a·private·RSA·key:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">2</span><span·class="o">></span><span·class="p"·data-group-id="5534922850-1">[</span><span·class="n">RSAEntry</span><span·class="p"·data-group-id="5534922850-1">]</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">public_key</span><span·class="p">:</span><span·class="nf">pem_decode</span><span·class="p"·data-group-id="5534922850-2">(</span><span·class="n">PemBin</span><span·class="p"·data-group-id="5534922850-2">)</span><span·class="p">.</span><span·class="w"> | ||
| 170 | </span><span·class="p"·data-group-id=" | 170 | </span><span·class="p"·data-group-id="5534922850-3">[</span><span·class="p"·data-group-id="5534922850-4">{</span><span·class="ss">'RSAPrivateKey'</span><span·class="p">,</span><span·class="p"·data-group-id="5534922850-5"><<</span><span·class="mi">224</span><span·class="p">,</span><span·class="mi">108</span><span·class="p">,</span><span·class="mi">117</span><span·class="p">,</span><span·class="mi">203</span><span·class="p">,</span><span·class="mi">152</span><span·class="p">,</span><span·class="mi">40</span><span·class="p">,</span><span·class="mi">15</span><span·class="p">,</span><span·class="mi">77</span><span·class="p">,</span><span·class="mi">128</span><span·class="p">,</span><span·class="mi">126</span><span·class="p">,</span><span·class="w"> |
| 171 | ····················</span><span·class="mi">221</span><span·class="p">,</span><span·class="mi">195</span><span·class="p">,</span><span·class="mi">154</span><span·class="p">,</span><span·class="mi">249</span><span·class="p">,</span><span·class="mi">85</span><span·class="p">,</span><span·class="mi">208</span><span·class="p">,</span><span·class="mi">202</span><span·class="p">,</span><span·class="mi">251</span><span·class="p">,</span><span·class="mi">109</span><span·class="p">,</span><span·class="w"> | 171 | ····················</span><span·class="mi">221</span><span·class="p">,</span><span·class="mi">195</span><span·class="p">,</span><span·class="mi">154</span><span·class="p">,</span><span·class="mi">249</span><span·class="p">,</span><span·class="mi">85</span><span·class="p">,</span><span·class="mi">208</span><span·class="p">,</span><span·class="mi">202</span><span·class="p">,</span><span·class="mi">251</span><span·class="p">,</span><span·class="mi">109</span><span·class="p">,</span><span·class="w"> |
| 172 | ····················</span><span·class="mi">119</span><span·class="p">,</span><span·class="mi">120</span><span·class="p">,</span><span·class="mi">57</span><span·class="p">,</span><span·class="mi">29</span><span·class="p">,</span><span·class="mi">89</span><span·class="p">,</span><span·class="mi">19</span><span·class="p">,</span><span·class="mi">9</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id=" | 172 | ····················</span><span·class="mi">119</span><span·class="p">,</span><span·class="mi">120</span><span·class="p">,</span><span·class="mi">57</span><span·class="p">,</span><span·class="mi">29</span><span·class="p">,</span><span·class="mi">89</span><span·class="p">,</span><span·class="mi">19</span><span·class="p">,</span><span·class="mi">9</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="5534922850-5">>></span><span·class="p">,</span><span·class="w"> |
| 173 | ··················</span><span·class="p"·data-group-id=" | 173 | ··················</span><span·class="p"·data-group-id="5534922850-6">{</span><span·class="s">"DES-EDE3-CBC"</span><span·class="p">,</span><span·class="p"·data-group-id="5534922850-7"><<</span><span·class="s">"kÙeø¼pµL"</span><span·class="p"·data-group-id="5534922850-7">>></span>[·...·truncated·by·diffoscope;·len:·774,·SHA:·cef7f77efd2ca9accb412184e480379bdcfddb795876406f966a696199fea2d0·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 174 | </span><span·class="o">#</span><span·class="ss">'RSAPrivateKey'</span><span·class="p"·data-group-id=" | 174 | </span><span·class="o">#</span><span·class="ss">'RSAPrivateKey'</span><span·class="p"·data-group-id="1928313084-2">{</span><span·class="ss">version</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">'two-prime'</span><span·class="p">,</span><span·class="w"> |
| 175 | ·················</span><span·class="ss">modulus</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">1112355156729921663373</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">2737107</span><span·class="p">,</span><span·class="w"> | 175 | ·················</span><span·class="ss">modulus</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">1112355156729921663373</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">2737107</span><span·class="p">,</span><span·class="w"> |
| 176 | ·················</span><span·class="ss">publicExponent</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">65537</span><span·class="p">,</span><span·class="w"> | 176 | ·················</span><span·class="ss">publicExponent</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">65537</span><span·class="p">,</span><span·class="w"> |
| 177 | ·················</span><span·class="ss">privateExponent</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">58064406231183</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">2239766033</span><span·class="p">,</span><span·class="w"> | 177 | ·················</span><span·class="ss">privateExponent</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">58064406231183</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">2239766033</span><span·class="p">,</span><span·class="w"> |
| 178 | ·················</span><span·class="ss">prime1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">11034766614656598484098</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">7326883017</span><span·class="p">,</span><span·class="w"> | 178 | ·················</span><span·class="ss">prime1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">11034766614656598484098</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">7326883017</span><span·class="p">,</span><span·class="w"> |
| 179 | ·················</span><span·class="ss">prime2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">10080459293561036618240</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">77738643771</span><span·class="p">,</span><span·class="w"> | 179 | ·················</span><span·class="ss">prime2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">10080459293561036618240</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">77738643771</span><span·class="p">,</span><span·class="w"> |
| 180 | ·················</span><span·class="ss">exponent1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">77928819327425934607</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">22152984217</span><span·class="p">,</span><span·class="w"> | 180 | ·················</span><span·class="ss">exponent1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">77928819327425934607</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">22152984217</span><span·class="p">,</span><span·class="w"> |
| 181 | ·················</span><span·class="ss">exponent2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">36287623121853605733</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">20588523793</span><span·class="p">,</span><span·class="w"> | 181 | ·················</span><span·class="ss">exponent2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">36287623121853605733</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">20588523793</span><span·class="p">,</span><span·class="w"> |
| 182 | ·················</span><span·class="ss">coefficient</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">924840412626098444</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">41820968343</span><span·class="p">,</span><span·class="w"> | 182 | ·················</span><span·class="ss">coefficient</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">924840412626098444</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="mi">41820968343</span><span·class="p">,</span><span·class="w"> |
| 183 | ·················</span><span·class="ss">otherPrimeInfos</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">asn1_NOVALUE</span><span·class="p"·data-group-id=" | 183 | ·················</span><span·class="ss">otherPrimeInfos</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">asn1_NOVALUE</span><span·class="p"·data-group-id="1928313084-2">}</span></code></pre><h3·id="x509-certificates"·class="section-heading"> |
| 184 | ··<a·href="#x509-certificates"·class="hover-link"> | 184 | ··<a·href="#x509-certificates"·class="hover-link"> |
| 185 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 185 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 186 | ··</a> | 186 | ··</a> |
| 187 | ··<span·class="text">X509·Certificates</span> | 187 | ··<span·class="text">X509·Certificates</span> |
| 188 | </h3> | 188 | </h3> |
| 189 | <p>The·following·is·an·example·of·X509·certificates:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="p"·data-group-id=" | 189 | <p>The·following·is·an·example·of·X509·certificates:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="p"·data-group-id="8205314050-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">PemBin</span><span·class="p"·data-group-id="8205314050-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·[·...·truncated·by·diffoscope;·len:·219,·SHA:·505d6bcb81a92af6823797240c4e1b391d4d8403ee45d71992b91a549a40664a·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 190 | </span><span·class="p"·data-group-id=" | 190 | </span><span·class="p"·data-group-id="8205314050-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="8205314050-4"><<</span><span·class="s">"-----BEGIN·CERTIFICATE-----\nMIIC7jCCAl"</span><span·class="p">.</span><span·class="p">.</span><s[·...·truncated·by·diffoscope;·len:·797,·SHA:·99b8d9a7506fc4406fb09fe089bfa10b09f0912e2592ce62f613830c0fd66234·...·]1-2">)</span><span·class="p">.</span><span·class="w"> |
| 191 | </span><span·class="p"·data-group-id=" | 191 | </span><span·class="p"·data-group-id="4903603081-3">[</span><span·class="p"·data-group-id="4903603081-4">{</span><span·class="ss">'Certificate'</span><span·class="p">,</span><span·class="p"·data-group-id="4903603081-5"><<</span><span·class="mi">48</span><span·class="p">,</span><span·class="mi">130</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">238</span><span·class="p">,</span><span·class="mi">48</span><span·class="p">,</span><span·class="mi">130</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">87</span><span·class="p">,</span><span·class="mi">160</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="w"> |
| 192 | ··················</span><span·class="mi">9</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">230</span><span·class="p">,</span><span·class="mi">145</span><span·class="p">,</span><span·class="mi">97</span><span·class="p">,</span><span·class="mi">214</span><span·class="p">,</span><span·class="mi">191</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">120</span><span·class="p">,</span><span·class="mi">150</span><span·class="p">,</span><span·class="mi">48</span><span·class="p">,</span><span·class="mi">13</span><span·class="p">,</span><span·class="w"> | 192 | ··················</span><span·class="mi">9</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">230</span><span·class="p">,</span><span·class="mi">145</span><span·class="p">,</span><span·class="mi">97</span><span·class="p">,</span><span·class="mi">214</span><span·class="p">,</span><span·class="mi">191</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">120</span><span·class="p">,</span><span·class="mi">150</span><span·class="p">,</span><span·class="mi">48</span><span·class="p">,</span><span·class="mi">13</span><span·class="p">,</span><span·class="w"> |
| 193 | ··················</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id=" | 193 | ··················</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="4903603081-5">>></span><span·class="p">,</span><span·class="w"> |
| 194 | ················</span><span·class="ss">not_encrypted</span><span·class="p"·data-group-id=" | 194 | ················</span><span·class="ss">not_encrypted</span><span·class="p"·data-group-id="4903603081-4">}</span><span·class="p">,</span><span·class="w"> |
| 195 | ·</span><span·class="p"·data-group-id=" | 195 | ·</span><span·class="p"·data-group-id="4903603081-6">{</span><span·class="ss">'Certificate'</span><span·class="p">,</span><span·class="p"·data-group-id="4903603081-7"><<</span><span·class="mi">48</span><span·class="p">,</span><span·class="mi">130</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">200</span><span·class="p">,</span><span·class="mi">48</span><span·class="p">,</span><span·class="mi">130</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">49</span><span·class="p">,</span><span·class="mi">160</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> |
| 196 | ··················</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">48</span><span·class="p">,</span><span·class="mi">13</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">9</span><span·class="p">,</span><span·class="mi">42</span><span·class="p">,</span><span·class="mi">134</span><span·class="p">,</span><span·class="mi">72</span><span·class="p">,</span><span·class="mi">134</span><span·class="p">,</span><span·class="mi">247</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id=" | 196 | ··················</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">48</span><span·class="p">,</span><span·class="mi">13</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">9</span><span·class="p">,</span><span·class="mi">42</span><span·class="p">,</span><span·class="mi">134</span><span·class="p">,</span><span·class="mi">72</span><span·class="p">,</span><span·class="mi">134</span><span·class="p">,</span><span·class="mi">247</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="4903603081-7">>></span><span·class="p">,</span><span·class="w"> |
| 197 | ················</span><span·class="ss">not_encrypted</span><span·class="p"·data-group-id=" | 197 | ················</span><span·class="ss">not_encrypted</span><span·class="p"·data-group-id="4903603081-6">}</span><span·class="p"·data-group-id="4903603081-3">]</span></code></pre><p>Certificates·can·be·decoded·as·usual:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="n">Cert</span><span·[·...·truncated·by·diffoscope;·len:·291,·SHA:·c9c9562361d814b1fb945a6820f066b459cd8111cd18a96a7a348a6754d23d6e·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 198 | </span><span·class="o">#</span><span·class="ss">'Certificate'</span><span·class="p"·data-group-id=" | 198 | </span><span·class="o">#</span><span·class="ss">'Certificate'</span><span·class="p"·data-group-id="2195569521-2">{</span><span·class="w"> |
| 199 | ····</span><span·class="ss">tbsCertificate</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 199 | ····</span><span·class="ss">tbsCertificate</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 200 | ········</span><span·class="o">#</span><span·class="ss">'TBSCertificate'</span><span·class="p"·data-group-id=" | 200 | ········</span><span·class="o">#</span><span·class="ss">'TBSCertificate'</span><span·class="p"·data-group-id="2195569521-3">{</span><span·class="w"> |
| 201 | ············</span><span·class="ss">version</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">v3</span><span·class="p">,</span><span·class="ss">serialNumber</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">16614168075301976214</span><span·class="p">,</span><span·class="w"> | 201 | ············</span><span·class="ss">version</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">v3</span><span·class="p">,</span><span·class="ss">serialNumber</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">16614168075301976214</span><span·class="p">,</span><span·class="w"> |
| 202 | ············</span><span·class="ss">signature</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 202 | ············</span><span·class="ss">signature</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 203 | ················</span><span·class="o">#</span><span·class="ss">'AlgorithmIdentifier'</span><span·class="p"·data-group-id=" | 203 | ················</span><span·class="o">#</span><span·class="ss">'AlgorithmIdentifier'</span><span·class="p"·data-group-id="2195569521-4">{</span><span·class="w"> |
| 204 | ····················</span><span·class="ss">algorithm</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 204 | ····················</span><span·class="ss">algorithm</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-5">{</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">840</span><span·class="p">,</span><span·class="mi">113549</span><span·class="p">,</span><span·class="mi">1</span><span·[·...·truncated·by·diffoscope;·len:·133,·SHA:·b0e8bea9264f9e4dce006c3e0a0333b3cfbc8474899d32fe1f9c24a595a6d934·...·]-5">}</span><span·class="p">,</span><span·class="w"> |
| 205 | ····················</span><span·class="ss">parameters</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 205 | ····················</span><span·class="ss">parameters</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-6"><<</span><span·class="mi">5</span><span·class="p">,</span><span·class="mi">0</span><span·class="p"·data-group-id="2195569521-6">>></span><span·class="p"·data-group-id="2195569521-4">}</span><span·class="p">,</span><span·class="w"> |
| 206 | ············</span><span·class="ss">issuer</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 206 | ············</span><span·class="ss">issuer</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 207 | ················</span><span·class="p"·data-group-id=" | 207 | ················</span><span·class="p"·data-group-id="2195569521-7">{</span><span·class="ss">rdnSequence</span><span·class="p">,</span><span·class="w"> |
| 208 | ····················</span><span·class="p"·data-group-id=" | 208 | ····················</span><span·class="p"·data-group-id="2195569521-8">[</span><span·class="p"·data-group-id="2195569521-9">[</span><span·class="o">#</span><span·class="ss">'AttributeTypeAndValue'</span><span·class="p"·data-group-id="2195569521-10">{</span><span·class="w"> |
| 209 | ··························</span><span·class="ss">type</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 209 | ··························</span><span·class="ss">type</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-11">{</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">5</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="2195569521-11">}</span><span·class="p">,</span><span·class="w"> |
| 210 | ··························</span><span·class="ss">value</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 210 | ··························</span><span·class="ss">value</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-12"><<</span><span·class="mi">19</span><span·class="p">,</span><span·class="mi">8</span><span·class="p">,</span><span·class="mi">101</span><span·class="p">,</span><span·class="mi">114</span><span·class="p">,</span><span·class="mi">108</spa[·...·truncated·by·diffoscope;·len:·410,·SHA:·89c5e87315e6303237a069db00abd5c4a62fb5fe21ddd96520edec588b55d887·...·]-9">]</span><span·class="p">,</span><span·class="w"> |
| 211 | ·····················</span><span·class="p"·data-group-id=" | 211 | ·····················</span><span·class="p"·data-group-id="2195569521-13">[</span><span·class="o">#</span><span·class="ss">'AttributeTypeAndValue'</span><span·class="p"·data-group-id="2195569521-14">{</span><span·class="w"> |
| 212 | ··························</span><span·class="ss">type</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 212 | ··························</span><span·class="ss">type</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-15">{</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">5</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">11</span><span·class="p"·data-group-id="2195569521-15">}</span><span·class="p">,</span><span·class="w"> |
| 213 | ··························</span><span·class="ss">value</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 213 | ··························</span><span·class="ss">value</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-16"><<</span><span·class="mi">19</span><span·class="p">,</span><span·class="mi">10</span><span·class="p">,</span><span·class="mi">69</span><span·class="p">,</span><span·class="mi">114</span><span·class="p">,</span><span·class="mi">108</spa[·...·truncated·by·diffoscope;·len:·510,·SHA:·f07596f4ed3466db57fe3ca742d33ff61e8b61babecdb56f6fccb01ce724e2f9·...·]-13">]</span><span·class="p">,</span><span·class="w"> |
| 214 | ·····················</span><span·class="p"·data-group-id=" | 214 | ·····················</span><span·class="p"·data-group-id="2195569521-17">[</span><span·class="o">#</span><span·class="ss">'AttributeTypeAndValue'</span><span·class="p"·data-group-id="2195569521-18">{</span><span·class="w"> |
| 215 | ··························</span><span·class="ss">type</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 215 | ··························</span><span·class="ss">type</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-19">{</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">5</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">10</span><span·class="p"·data-group-id="2195569521-19">}</span><span·class="p">,</span><span·class="w"> |
| 216 | ··························</span><span·class="ss">value</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 216 | ··························</span><span·class="ss">value</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-20"><<</span><span·class="mi">19</span><span·class="p">,</span><span·class="mi">11</span><span·class="p">,</span><span·class="mi">69</span><span·class="p">,</span><span·class="mi">114</span><span·class="p">,</span><span·class="mi">105</spa[·...·truncated·by·diffoscope;·len:·562,·SHA:·eaa11c47b4f8b3cef66e8a4516743a329fd6110765214b436761f98922c1a845·...·]-17">]</span><span·class="p">,</span><span·class="w"> |
| 217 | ·····················</span><span·class="p"·data-group-id=" | 217 | ·····················</span><span·class="p"·data-group-id="2195569521-21">[</span><span·class="o">#</span><span·class="ss">'AttributeTypeAndValue'</span><span·class="p"·data-group-id="2195569521-22">{</span><span·class="w"> |
| 218 | ··························</span><span·class="ss">type</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 218 | ··························</span><span·class="ss">type</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-23">{</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">5</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">7</span><span·class="p"·data-group-id="2195569521-23">}</span><span·class="p">,</span><span·class="w"> |
| 219 | ··························</span><span·class="ss">value</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 219 | ··························</span><span·class="ss">value</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-24"><<</span><span·class="mi">19</span><span·class="p">,</span><span·class="mi">9</span><span·class="p">,</span><span·class="mi">83</span><span·class="p">,</span><span·class="mi">116</span><span·class="p">,</span><span·class="mi">111</span[·...·truncated·by·diffoscope;·len:·462,·SHA:·f85981c3efbf4717add2db13591f5ad473c3db0516b6aa3ee67044f9f9ecb8c3·...·]-21">]</span><span·class="p">,</span><span·class="w"> |
| 220 | ·····················</span><span·class="p"·data-group-id=" | 220 | ·····················</span><span·class="p"·data-group-id="2195569521-25">[</span><span·class="o">#</span><span·class="ss">'AttributeTypeAndValue'</span><span·class="p"·data-group-id="2195569521-26">{</span><span·class="w"> |
| 221 | ··························</span><span·class="ss">type</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 221 | ··························</span><span·class="ss">type</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-27">{</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">5</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">6</span><span·class="p"·data-group-id="2195569521-27">}</span><span·class="p">,</span><span·class="w"> |
| 222 | ··························</span><span·class="ss">value</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 222 | ··························</span><span·class="ss">value</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-28"><<</span><span·class="mi">19</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">83</span><span·class="p">,</span><span·class="mi">69</span><span·class="p"·data-group-id="2195569521-28">>&[·...·truncated·by·diffoscope;·len:·105,·SHA:·42fd8fb3f264bfd664be91cbf2c131884804e7bc579266f661c25565c571ae95·...·]-25">]</span><span·class="p">,</span><span·class="w"> |
| 223 | ·····················</span><span·class="p"·data-group-id=" | 223 | ·····················</span><span·class="p"·data-group-id="2195569521-29">[</span><span·class="o">#</span><span·class="ss">'AttributeTypeAndValue'</span><span·class="p"·data-group-id="2195569521-30">{</span><span·class="w"> |
| 224 | ··························</span><span·class="ss">type</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 224 | ··························</span><span·class="ss">type</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-31">{</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">840</span><span·class="p">,</span><span·class="mi">113549</span><span·class="p">,</span><span·class="mi">1</span><span[·...·truncated·by·diffoscope;·len:·134,·SHA:·67dbe64ddab074f6b3ed4444955df33e1febeb791b4df1b3cab9d8be8b2c2f41·...·]-31">}</span><span·class="p">,</span><span·class="w"> |
| 225 | ··························</span><span·class="ss">value</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 225 | ··························</span><span·class="ss">value</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-32"><<</span><span·class="mi">22</span><span·class="p">,</span><span·class="mi">22</span><span·class="p">,</span><span·class="mi">112</span><span·class="p">,</span><span·class="mi">101</span><span·class="p">,</span><span·class="mi">116</sp[·...·truncated·by·diffoscope;·len:·616,·SHA:·bb5a21ade4033d1c08bf91d57e9c52f2b08a6f9a8f8ce2ef33b2ee990a1497fc·...·]-7">}</span><span·class="p">,</span><span·class="w"> |
| 226 | ············</span><span·class="ss">validity</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 226 | ············</span><span·class="ss">validity</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 227 | ················</span><span·class="o">#</span><span·class="ss">'Validity'</span><span·class="p"·data-group-id=" | 227 | ················</span><span·class="o">#</span><span·class="ss">'Validity'</span><span·class="p"·data-group-id="2195569521-33">{</span><span·class="w"> |
| 228 | ····················</span><span·class="ss">notBefore</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 228 | ····················</span><span·class="ss">notBefore</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-34">{</span><span·class="ss">utcTime</span><span·class="p">,</span><span·class="s">"080109082929Z"</span><span·class="p"·data-group-id="2195569521-34">}</span><span·class="p">,</span><span·class="w"> |
| 229 | ····················</span><span·class="ss">notAfter</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 229 | ····················</span><span·class="ss">notAfter</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-35">{</span><span·class="ss">utcTime</span><span·class="p">,</span><span·class="s">"080208082929Z"</span><span·class="p"·data-group-id="2195569521-35">}</span><span·class="p"·data-group-id="2195569521-33">}</span><span·class="p">,</span><span·class="w"> |
| 230 | ············</span><span·class="ss">subject</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 230 | ············</span><span·class="ss">subject</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 231 | ················</span><span·class="p"·data-group-id=" | 231 | ················</span><span·class="p"·data-group-id="2195569521-36">{</span><span·class="ss">rdnSequence</span><span·class="p">,</span><span·class="w"> |
| 232 | ····················</span><span·class="p"·data-group-id=" | 232 | ····················</span><span·class="p"·data-group-id="2195569521-37">[</span><span·class="p"·data-group-id="2195569521-38">[</span><span·class="o">#</span><span·class="ss">'AttributeTypeAndValue'</span><span·class="p"·data-group-id="2195569521-39">{</span><span·class="w"> |
| 233 | ··························</span><span·class="ss">type</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 233 | ··························</span><span·class="ss">type</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-40">{</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">5</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="2195569521-40">}</span><span·class="p">,</span><span·class="w"> |
| 234 | ··························</span><span·class="ss">value</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 234 | ··························</span><span·class="ss">value</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-41"><<</span><span·class="mi">19</span><span·class="p">,</span><span·class="mi">8</span><span·class="p">,</span><span·class="mi">101</span><span·class="p">,</span><span·class="mi">114</span><span·class="p">,</span><span·class="mi">108</spa[·...·truncated·by·diffoscope;·len:·410,·SHA:·5bed594f24a5cef80ca14119eb2634875e4ac5bcb61d744d7593ebc4a9fd25d6·...·]-38">]</span><span·class="p">,</span><span·class="w"> |
| 235 | ·····················</span><span·class="p"·data-group-id=" | 235 | ·····················</span><span·class="p"·data-group-id="2195569521-42">[</span><span·class="o">#</span><span·class="ss">'AttributeTypeAndValue'</span><span·class="p"·data-group-id="2195569521-43">{</span><span·class="w"> |
| 236 | ··························</span><span·class="ss">type</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 236 | ··························</span><span·class="ss">type</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-44">{</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">5</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">11</span><span·class="p"·data-group-id="2195569521-44">}</span><span·class="p">,</span><span·class="w"> |
| 237 | ··························</span><span·class="ss">value</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 237 | ··························</span><span·class="ss">value</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-45"><<</span><span·class="mi">19</span><span·class="p">,</span><span·class="mi">10</span><span·class="p">,</span><span·class="mi">69</span><span·class="p">,</span><span·class="mi">114</span><span·class="p">,</span><span·class="mi">108</spa[·...·truncated·by·diffoscope;·len:·510,·SHA:·440b287b1819c906e0f9dc4afebde7387878c778da800a84c2e786d69d80c845·...·]-42">]</span><span·class="p">,</span><span·class="w"> |
| 238 | ·····················</span><span·class="p"·data-group-id=" | 238 | ·····················</span><span·class="p"·data-group-id="2195569521-46">[</span><span·class="o">#</span><span·class="ss">'AttributeTypeAndValue'</span><span·class="p"·data-group-id="2195569521-47">{</span><span·class="w"> |
| 239 | ··························</span><span·class="ss">type</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 239 | ··························</span><span·class="ss">type</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-48">{</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">5</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">10</span><span·class="p"·data-group-id="2195569521-48">}</span><span·class="p">,</span><span·class="w"> |
| 240 | ··························</span><span·class="ss">value</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 240 | ··························</span><span·class="ss">value</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-49"><<</span><span·class="mi">19</span><span·class="p">,</span><span·class="mi">11</span><span·class="p">,</span><span·class="mi">69</span><span·class="p">,</span><span·class="mi">114</span><span·class="p">,</span><span·class="mi">105</spa[·...·truncated·by·diffoscope;·len:·558,·SHA:·1c449730eec18099dbbbf35e949a0d1cf78206d4ecdf8a958e58cef6bbfd3843·...·]-46">]</span><span·class="p">,</span><span·class="w"> |
| 241 | ·····················</span><span·class="p"·data-group-id=" | 241 | ·····················</span><span·class="p"·data-group-id="2195569521-50">[</span><span·class="o">#</span><span·class="ss">'AttributeTypeAndValue'</span><span·class="p"·data-group-id="2195569521-51">{</span><span·class="w"> |
| 242 | ··························</span><span·class="ss">type</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 242 | ··························</span><span·class="ss">type</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-52">{</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">5</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">7</span><span·class="p"·data-group-id="2195569521-52">}</span><span·class="p">,</span><span·class="w"> |
| 243 | ··························</span><span·class="ss">value</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 243 | ··························</span><span·class="ss">value</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-53"><<</span><span·class="mi">19</span><span·class="p">,</span><span·class="mi">9</span><span·class="p">,</span><span·class="mi">83</span><span·class="p">,</span><span·class="mi">116</span><span·class="p">,</span><span·class="mi">111</span[·...·truncated·by·diffoscope;·len:·507,·SHA:·53b7cd273b3fa74f2ba4723e155199bf5fe8a66ec4f68f0acda9d726198b5d57·...·]-50">]</span><span·class="p">,</span><span·class="w"> |
| 244 | ·····················</span><span·class="p"·data-group-id=" | 244 | ·····················</span><span·class="p"·data-group-id="2195569521-54">[</span><span·class="o">#</span><span·class="ss">'AttributeTypeAndValue'</span><span·class="p"·data-group-id="2195569521-55">{</span><span·class="w"> |
| 245 | ··························</span><span·class="ss">type</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 245 | ··························</span><span·class="ss">type</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-56">{</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">5</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">6</span><span·class="p"·data-group-id="2195569521-56">}</span><span·class="p">,</span><span·class="w"> |
| 246 | ··························</span><span·class="ss">value</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 246 | ··························</span><span·class="ss">value</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-57"><<</span><span·class="mi">19</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">83</span><span·class="p">,</span><span·class="mi">69</span><span·class="p"·data-group-id="2195569521-57">>&[·...·truncated·by·diffoscope;·len:·105,·SHA:·5d534480cec1ca7801d2b758087d4d7c9bedddbe5cfa2c76397e0ffe0443d8bb·...·]-54">]</span><span·class="p">,</span><span·class="w"> |
| 247 | ·····················</span><span·class="p"·data-group-id=" | 247 | ·····················</span><span·class="p"·data-group-id="2195569521-58">[</span><span·class="o">#</span><span·class="ss">'AttributeTypeAndValue'</span><span·class="p"·data-group-id="2195569521-59">{</span><span·class="w"> |
| 248 | ··························</span><span·class="ss">type</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 248 | ··························</span><span·class="ss">type</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-60">{</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">840</span><span·class="p">,</span><span·class="mi">113549</span><span·class="p">,</span><span·class="mi">1</span><span[·...·truncated·by·diffoscope;·len:·134,·SHA:·67dbe64ddab074f6b3ed4444955df33e1febeb791b4df1b3cab9d8be8b2c2f41·...·]-60">}</span><span·class="p">,</span><span·class="w"> |
| 249 | ··························</span><span·class="ss">value</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 249 | ··························</span><span·class="ss">value</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-61"><<</span><span·class="mi">22</span><span·class="p">,</span><span·class="mi">22</span><span·class="p">,</span><span·class="mi">112</span><span·class="p">,</span><span·class="mi">101</span><span·class="p">,</span><span·class="mi">116</sp[·...·truncated·by·diffoscope;·len:·515,·SHA:·f33d65da284bce4065bc431b579dae6cb2e614790be63a6a2ef9f91fa2ceb918·...·]-36">}</span><span·class="p">,</span><span·class="w"> |
| 250 | ············</span><span·class="ss">subjectPublicKeyInfo</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 250 | ············</span><span·class="ss">subjectPublicKeyInfo</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 251 | ················</span><span·class="o">#</span><span·class="ss">'SubjectPublicKeyInfo'</span><span·class="p"·data-group-id=" | 251 | ················</span><span·class="o">#</span><span·class="ss">'SubjectPublicKeyInfo'</span><span·class="p"·data-group-id="2195569521-62">{</span><span·class="w"> |
| 252 | ····················</span><span·class="ss">algorithm</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 252 | ····················</span><span·class="ss">algorithm</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 253 | ························</span><span·class="o">#</span><span·class="ss">'AlgorithmIdentifier'</span><span·class="p"·data-group-id=" | 253 | ························</span><span·class="o">#</span><span·class="ss">'AlgorithmIdentifier'</span><span·class="p"·data-group-id="2195569521-63">{</span><span·class="w"> |
| 254 | ····························</span><span·class="ss">algorithm</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 254 | ····························</span><span·class="ss">algorithm</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-64">{</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">840</span><span·class="p">,</span><span·class="mi">113549</span><span·class="p">,</span><span·class="mi">1</span><span[·...·truncated·by·diffoscope;·len:·134,·SHA:·348ed44e7832930e21ffad588b2da20cfef5fea0aece1543812f210070118bed·...·]-64">}</span><span·class="p">,</span><span·class="w"> |
| 255 | ····························</span><span·class="ss">parameters</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 255 | ····························</span><span·class="ss">parameters</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-65"><<</span><span·class="mi">5</span><span·class="p">,</span><span·class="mi">0</span><span·class="p"·data-group-id="2195569521-65">>></span><span·class="p"·data-group-id="2195569521-63">}</span><span·class="p">,</span><span·class="w"> |
| 256 | ····················</span><span·class="ss">subjectPublicKey</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 256 | ····················</span><span·class="ss">subjectPublicKey</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 257 | ························</span><span·class="p"·data-group-id=" | 257 | ························</span><span·class="p"·data-group-id="2195569521-66">{</span><span·class="mi">0</span><span·class="p">,</span><span·class="p"·data-group-id="2195569521-67"><<</span><span·class="mi">48</span><span·class="p">,</span><span·class="mi">129</span><span·class="p">,</span><span·class="mi">137</[·...·truncated·by·diffoscope;·len:·811,·SHA:·5426362416342399898f28afb4ba453bd228582dd7bd76fd4720e652eed69923·...·]-62">}</span><span·class="p">,</span><span·class="w"> |
| 258 | ············</span><span·class="ss">issuerUniqueID</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">asn1_NOVALUE</span><span·class="p">,</span><span·class="w"> | 258 | ············</span><span·class="ss">issuerUniqueID</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">asn1_NOVALUE</span><span·class="p">,</span><span·class="w"> |
| 259 | ············</span><span·class="ss">subjectUniqueID</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">asn1_NOVALUE</span><span·class="p">,</span><span·class="w"> | 259 | ············</span><span·class="ss">subjectUniqueID</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">asn1_NOVALUE</span><span·class="p">,</span><span·class="w"> |
| 260 | ············</span><span·class="ss">extensions</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 260 | ············</span><span·class="ss">extensions</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 261 | ················</span><span·class="p"·data-group-id=" | 261 | ················</span><span·class="p"·data-group-id="2195569521-68">[</span><span·class="o">#</span><span·class="ss">'Extension'</span><span·class="p"·data-group-id="2195569521-69">{</span><span·class="w"> |
| 262 | ·····················</span><span·class="ss">extnID</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 262 | ·····················</span><span·class="ss">extnID</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-70">{</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">5</span><span·class="p">,</span><span·class="mi">29</span><span·class="p">,</span><span·class="mi">19</span><span·class="p"·data-group-id="2195569521-70">}</span><span·class="p">,</span><span·class="w"> |
| 263 | ·····················</span><span·class="ss">critical</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">true</span><span·class="p">,</span><span·class="w"> | 263 | ·····················</span><span·class="ss">critical</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">true</span><span·class="p">,</span><span·class="w"> |
| 264 | ·····················</span><span·class="ss">extnValue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 264 | ·····················</span><span·class="ss">extnValue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-71">[</span><span·class="mi">48</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">255</span><span·cla[·...·truncated·by·diffoscope;·len:·86,·SHA:·f103812bcc316130297dea55b4c34dba777fd7c01663aa5512c7c43fdfee85ce·...·]-69">}</span><span·class="p">,</span><span·class="w"> |
| 265 | ·················</span><span·class="o">#</span><span·class="ss">'Extension'</span><span·class="p"·data-group-id=" | 265 | ·················</span><span·class="o">#</span><span·class="ss">'Extension'</span><span·class="p"·data-group-id="2195569521-72">{</span><span·class="w"> |
| 266 | ·····················</span><span·class="ss">extnID</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 266 | ·····················</span><span·class="ss">extnID</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-73">{</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">5</span><span·class="p">,</span><span·class="mi">29</span><span·class="p">,</span><span·class="mi">15</span><span·class="p"·data-group-id="2195569521-73">}</span><span·class="p">,</span><span·class="w"> |
| 267 | ·····················</span><span·class="ss">critical</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">false</span><span·class="p">,</span><span·class="w"> | 267 | ·····················</span><span·class="ss">critical</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">false</span><span·class="p">,</span><span·class="w"> |
| 268 | ·····················</span><span·class="ss">extnValue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 268 | ·····················</span><span·class="ss">extnValue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2195569521-74">[</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">6</span><span·class="p"·data-group-id="2195569521-74">]</span><span·c[·...·truncated·by·diffoscope;·len:·34,·SHA:·6e89c9ce3523dcad137ed7b23753da02617b1b450b4d3010a82f916f5f6d50ce·...·]-72">}</span><span·class="p">,</span><span·class="w"> |
| 269 | ·················</span><span·class="o">#</span><span·class="ss">'Extension'</span><span·class="p"·data-group-id=" | 269 | ·················</span><span·class="o">#</span><span·class="ss">'Extension'</span><span·class="p"·data-group-id="2195569521-75">{</span><span·class="w"> |
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| 131 | ··</a> | 131 | ··</a> |
| 132 | ··<span·class="text">Start·and·stop·windows·and·servers</span> | 132 | ··<span·class="text">Start·and·stop·windows·and·servers</span> |
| 133 | </h2> | 133 | </h2> |
| 134 | <p>The·main·process·in·Reltool·is·the·server.·It·can·be·used·as·it·is·or·be·used | 134 | <p>The·main·process·in·Reltool·is·the·server.·It·can·be·used·as·it·is·or·be·used |
| 135 | via·the·GUI·frontend·process.·When·the·GUI·is·started,·a·server·process·will | 135 | via·the·GUI·frontend·process.·When·the·GUI·is·started,·a·server·process·will |
| 136 | automatically·be·started.·The·GUI·process·is·started·with·<a·href="reltool.html#start/0"><code·class="inline">reltool:start/0</code></a>, | 136 | automatically·be·started.·The·GUI·process·is·started·with·<a·href="reltool.html#start/0"><code·class="inline">reltool:start/0</code></a>, |
| 137 | <a·href="reltool.html#start/1"><code·class="inline">reltool:start/1</code></a>·or·<a·href="reltool.html#start_link/1"><code·class="inline">reltool:start_link/1</code></a>.·The·pid·of·its·server·can·be | 137 | <a·href="reltool.html#start/1"><code·class="inline">reltool:start/1</code></a>·or·<a·href="reltool.html#start_link/1"><code·class="inline">reltool:start_link/1</code></a>.·The·pid·of·its·server·can·be |
| 138 | obtained·with·<a·href="reltool.html#start_link/1"><code·class="inline">reltool:get_server/1</code></a></p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Erlang</span><span·class="o">/</span><span·class="n">OTP</span><span·class="w">·</span><span·class="mi">20</span><span·class="w">·</span><span·class="p"·data-group-id=" | 138 | obtained·with·<a·href="reltool.html#start_link/1"><code·class="inline">reltool:get_server/1</code></a></p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Erlang</span><span·class="o">/</span><span·class="n">OTP</span><span·class="w">·</span><span·class="mi">20</span><span·class="w">·</span><span·class="p"·data-group-id="8448974121-1">[</span><span·class="ss">erts</span><span·class="o">-</span><span·class="mf">9.0</span><span·class="p"·data-group-id="8448974121-1">]</span><span·class="w">·</span><span·class="p"·data-group-id="8448974121-2">[</span><span·class="ss">source</[·...·truncated·by·diffoscope;·len:·1131,·SHA:·6660f989acec1700e6f0234abbd784e6fdb821b45bc3004a2535c11775438570·...·]-6">]</span><span·class="w"> |
| 139 | </span><span·class="p"·data-group-id=" | 139 | </span><span·class="p"·data-group-id="8448974121-7">[</span><span·class="ss">hipe</span><span·class="p"·data-group-id="8448974121-7">]</span><span·class="w">·</span><span·class="p"·data-group-id="8448974121-8">[</span><span·class="ss">kernel</span><span·class="o">-</span><span·class="nc">poll<[·...·truncated·by·diffoscope;·len:·100,·SHA:·16ccbce2053d5052be84cb8a8ed09e12e7625c3262a3481000ae3aa1657b01a4·...·]-8">]</span><span·class="w"> |
| 140 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V9</span><span·class="p">.</span><span·class="mi">0</span><span·class="w">··</span><span·class="p"·data-group-id=" | 140 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V9</span><span·class="p">.</span><span·class="mi">0</span><span·class="w">··</span><span·class="p"·data-group-id="8448974121-9">(</span><span·class="ss">abort</span><span·class="w">·</span><span·class="ss">with</span><span·class="w">·</span><span·class="err">^</span><span·class="n">G</span><span·class="p"·data-group-id="8448974121-9">)</span><span·class="w"> |
| 141 | </span><span·class="mi">1</span><span·class="o">></span><span·class="gp·unselectable"> | 141 | </span><span·class="mi">1</span><span·class="o">></span><span·class="gp·unselectable"> |
| 142 | 1>·</span><span·class="p"·data-group-id=" | 142 | 1>·</span><span·class="p"·data-group-id="8448974121-10">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Win</span><span·class="p"·data-group-id="8448974121-10">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·c[·...·truncated·by·diffoscope;·len:·280,·SHA:·6df5a4de8b5c7f8818987b0998e8485cceeb68fb41a0edb8e2efaf3af16b6586·...·]-11">)</span><span·class="p">.</span><span·class="w"> |
| 143 | </span><span·class="p"·data-group-id=" | 143 | </span><span·class="p"·data-group-id="8448974121-13">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.36</span><span·class="p">.</span><span·class="mi">01</span><span·class="o">></span><span·class="p"·data-group-id="8448974121-13">}</span><span·class="gp·unselectable"> |
| 144 | 2>·</span><span·class="p"·data-group-id=" | 144 | 2>·</span><span·class="p"·data-group-id="8448974121-14">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Server</span><span·class="p"·data-group-id="8448974121-14">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><spa[·...·truncated·by·diffoscope;·len:·206,·SHA:·cf1c54895bef87e20787126354761b454ecf8996c67ad5d22e0e858b2077c601·...·]-15">)</span><span·class="p">.</span><span·class="w"> |
| 145 | </span><span·class="p"·data-group-id=" | 145 | </span><span·class="p"·data-group-id="8448974121-16">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.37</span><span·class="p">.</span><span·class="mi">01</span><span·class="o">></span><span·class="p"·data-group-id="8448974121-16">}</span><span·class="gp·unselectable"> |
| 146 | 3>·</span><span·class="nc">reltool</span><span·class="p">:</span><span·class="nf">get_config</span><span·class="p"·data-group-id=" | 146 | 3>·</span><span·class="nc">reltool</span><span·class="p">:</span><span·class="nf">get_config</span><span·class="p"·data-group-id="8448974121-17">(</span><span·class="n">Server</span><span·class="p"·data-group-id="8448974121-17">)</span><span·class="p">.</span><span·class="w"> |
| 147 | </span><span·class="p"·data-group-id=" | 147 | </span><span·class="p"·data-group-id="8448974121-18">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="8448974121-19">{</span><span·class="ss">sys</span><span·class="p">,</span><span·class="p"·data-group-id="8448974121-20">[</span><span·class="p"·data-gro[·...·truncated·by·diffoscope;·len:·125,·SHA:·058f580532f2b248a420a3b74ef0a35916cd5ad6765694df7ee694be9573ce54·...·]-18">}</span><span·class="w"> |
| 148 | </span><span·class="mi">4</span><span·class="o">></span><span·class="gp·unselectable"> | 148 | </span><span·class="mi">4</span><span·class="o">></span><span·class="gp·unselectable"> |
| 149 | 4>·</span><span·class="p"·data-group-id=" | 149 | 4>·</span><span·class="p"·data-group-id="8448974121-21">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Server2</span><span·class="p"·data-group-id="8448974121-21">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><sp[·...·truncated·by·diffoscope;·len:·291,·SHA:·3bd23d1902852b31c864d750d0874c59b226d0f68b78e33d5867be8f23df972e·...·]-22">)</span><span·class="p">.</span><span·class="w"> |
| 150 | </span><span·class="p"·data-group-id=" | 150 | </span><span·class="p"·data-group-id="8448974121-24">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.6535</span><span·class="p">.</span><span·class="mi">01</span><span·class="o">></span><span·class="p"·data-group-id="8448974121-24">}</span><span·class="gp·unselectable"> |
| 151 | 5>·</span><span·class="nc">reltool</span><span·class="p">:</span><span·class="nf">get_config</span><span·class="p"·data-group-id="6541870135-25">(</span><span·class="n">Server2</span><span·class="p"·data-group-id="6541870135-25">)</span><span·class="p">.</span><span·class="w"> | ||
| 152 | </span><span·class= | 151 | 5>·</span><span·class="nc">reltool</span><span·class="p">:</span><span·class="nf">get_config</span><span·class="p"·data-group-id="8448974121-25">(</span><span·class="n">Server2</span><span·class="p"·data-group-id="8448974121-25">)</span><span·class="p">[·...·truncated·by·diffoscope;·len:·22,·SHA:·e5280ec72a33d941ddb767e9152358107b2476663ca4f611d5a154c3121850a0·...·]"> |
| 152 | </span><span·class="p"·data-group-id="8448974121-26">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="8448974121-27">{</span><span·class="ss">sys</span><span·class="p">,</span><span·class="p"·data-group-id="8448974121-28">[</span><span·class="p"·data-group-id="8448974121-28">]</span><span·class="p"·data-group-id="8448974121-27">}</span><span·class="p"·data-group-id="8448974121-26">}</span><span·class="gp·unselectable"> | ||
| 153 | 6>·</span><span·class="nc">reltool</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id=" | 153 | 6>·</span><span·class="nc">reltool</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id="8448974121-29">(</span><span·class="n">Server2</span><span·class="p"·data-group-id="8448974121-29">)</span><span·class="p">.</span><span·class="w"> |
| 154 | </span><span·class="ss">ok</span></code></pre><h2·id="inspecting-the-configuration"·class="section-heading"> | 154 | </span><span·class="ss">ok</span></code></pre><h2·id="inspecting-the-configuration"·class="section-heading"> |
| 155 | ··<a·href="#inspecting-the-configuration"·class="hover-link"> | 155 | ··<a·href="#inspecting-the-configuration"·class="hover-link"> |
| 156 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 156 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 157 | ··</a> | 157 | ··</a> |
| 158 | ··<span·class="text">Inspecting·the·configuration</span> | 158 | ··<span·class="text">Inspecting·the·configuration</span> |
| 159 | </h2> | 159 | </h2> |
| 160 | <pre><code·class="makeup·erlang"·translate="no"><span·class="n">Erlang</span><span·class="o">/</span><span·class="n">OTP</span><span·class="w">·</span><span·class="mi">20</span><span·class="w">·</span><span·class="p"·data-group-id=" | 160 | <pre><code·class="makeup·erlang"·translate="no"><span·class="n">Erlang</span><span·class="o">/</span><span·class="n">OTP</span><span·class="w">·</span><span·class="mi">20</span><span·class="w">·</span><span·class="p"·data-group-id="8266808127-1">[</span><span·class="ss">erts</span><span·class="o">-</span><span·class="mf">9.0</span><span·class="p"·data-group-id="8266808127-1">]</span><span·class="w">·</span><span·class="p"·data-group-id="8266808127-2">[</span><span·class="ss">source</[·...·truncated·by·diffoscope;·len:·1131,·SHA:·70d9b711b2d66bb19072a7d8d150006819b65e2a698574101f16587a662b0fd7·...·]-6">]</span><span·class="w"> |
| 161 | </span><span·class="p"·data-group-id=" | 161 | </span><span·class="p"·data-group-id="8266808127-7">[</span><span·class="ss">hipe</span><span·class="p"·data-group-id="8266808127-7">]</span><span·class="w">·</span><span·class="p"·data-group-id="8266808127-8">[</span><span·class="ss">kernel</span><span·class="o">-</span><span·class="nc">poll<[·...·truncated·by·diffoscope;·len:·100,·SHA:·1d5960033e6518949bd9d6e694728c0f5943899a11e10e23c818c5d54485ae14·...·]-8">]</span><span·class="w"> |
| 162 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V9</span><span·class="p">.</span><span·class="mi">0</span><span·class="w">··</span><span·class="p"·data-group-id=" | 162 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V9</span><span·class="p">.</span><span·class="mi">0</span><span·class="w">··</span><span·class="p"·data-group-id="8266808127-9">(</span><span·class="ss">abort</span><span·class="w">·</span><span·class="ss">with</span><span·class="w">·</span><span·class="err">^</span><span·class="n">G</span><span·class="p"·data-group-id="8266808127-9">)</span><span·class="w"> |
| 163 | </span><span·class="mi">1</span><span·class="o">></span><span·class="gp·unselectable"> | 163 | </span><span·class="mi">1</span><span·class="o">></span><span·class="gp·unselectable"> |
| 164 | 1>·</span><span·class="n">Config</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 164 | 1>·</span><span·class="n">Config</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="8266808127-10">{</span><span·class="ss">sys</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8266808127-11">[</span><span·class="p"·data-group-id="8266808127-12">{</span><span·class="ss">escript</span><span·class="p">,</[·...·truncated·by·diffoscope;·len:·502,·SHA:·9d754d1c8b6f05e6c4f06848597ba22193849e299020a053297849b7f50781fd·...·]-12">}</span><span·class="p">,</span><span·class="w"> |
| 165 | » » ···</span><span·class="p"·data-group-id=" | 165 | » » ···</span><span·class="p"·data-group-id="8266808127-15">{</span><span·class="ss">app</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">inets</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8266808127-16">[</span><span·class="p"·data-group-[·...·truncated·by·diffoscope;·len:·288,·SHA:·749268bda9689336037e4f3fa65eb2717222c6c435a3d17a2b0a805524f65875·...·]-15">}</span><span·class="p">,</span><span·class="w"> |
| 166 | » » ···</span><span·class="p"·data-group-id=" | 166 | » » ···</span><span·class="p"·data-group-id="8266808127-18">{</span><span·class="ss">app</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">mnesia</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8266808127-19">[</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·289,·SHA:·e4e533eeabdf97efac8c02c308e13c2a462ac5c183ee1636cea8a0b5e504853d·...·]-18">}</span><span·class="p">,</span><span·class="w"> |
| 167 | » » ···</span><span·class="p"·data-group-id=" | 167 | » » ···</span><span·class="p"·data-group-id="8266808127-21">{</span><span·class="ss">app</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ssl</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8266808127-22">[</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·286,·SHA:·53a7707898c5842b05afefc213f983fa65ce9c5500c9d680f8b1fd7684afb013·...·]-21">}</span><span·class="p">,</span><span·class="w"> |
| 168 | » » ···</span><span·class="p"·data-group-id=" | 168 | » » ···</span><span·class="p"·data-group-id="8266808127-24">{</span><span·class="ss">app</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">runtime_tools</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8266808127-25">[</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·296,·SHA:·e00d9629d362a31e17ba3fe716e9eb9f27b66362b0afe010db4d166bbd635b14·...·]-24">}</span><span·class="p">,</span><span·class="w"> |
| 169 | » » ···</span><span·class="p"·data-group-id=" | 169 | » » ···</span><span·class="p"·data-group-id="8266808127-27">{</span><span·class="ss">app</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">syntax_tools</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8266808127-28">[</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·403,·SHA:·6dc5401e0d1b4e15876c5849dd27bf732849dfb80d943027af71d2652c5918e8·...·]-10">}</span><span·class="p">.</span><span·class="w"> |
| 170 | </span><span·class="p"·data-group-id=" | 170 | </span><span·class="p"·data-group-id="8266808127-30">{</span><span·class="ss">sys</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-31">[</span><span·class="p"·data-group-id="8266808127-32">{</span><span·class="ss">escript</span><span·class="p">,</span><span·class="s">&qu[·...·truncated·by·diffoscope;·len:·406,·SHA:·65473b9a133c6b4d8c40237da32074f39575fae0318e940551366a7f8143337c·...·]-32">}</span><span·class="p">,</span><span·class="w"> |
| 171 | ······</span><span·class="p"·data-group-id=" | 171 | ······</span><span·class="p"·data-group-id="8266808127-35">{</span><span·class="ss">app</span><span·class="p">,</span><span·class="ss">inets</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-36">[</span><span·class="p"·data-group-id="8266808127-37">{</span><span·class="ss">incl[·...·truncated·by·diffoscope;·len:·216,·SHA:·2127bfdaba5fd5b6d4a78359eca5485f187ca989b921f3e7400954cc62a1e619·...·]-35">}</span><span·class="p">,</span><span·class="w"> |
| 172 | ······</span><span·class="p"·data-group-id=" | 172 | ······</span><span·class="p"·data-group-id="8266808127-38">{</span><span·class="ss">app</span><span·class="p">,</span><span·class="ss">mnesia</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-39">[</span><span·class="p"·data-group-id="8266808127-40">{</span><span·class="ss">inc[·...·truncated·by·diffoscope;·len:·217,·SHA:·c184cc02151365cc8aa2162838d068802a28d1f20c69b7c3ecab3b535b7e987d·...·]-38">}</span><span·class="p">,</span><span·class="w"> |
| 173 | ······</span><span·class="p"·data-group-id=" | 173 | ······</span><span·class="p"·data-group-id="8266808127-41">{</span><span·class="ss">app</span><span·class="p">,</span><span·class="ss">ssl</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-42">[</span><span·class="p"·data-group-id="8266808127-43">{</span><span·class="ss">incl_c[·...·truncated·by·diffoscope;·len:·214,·SHA:·1bf259b7ba0e1f6788b081d9be375c419398daa7fee80e1b5d19e6718a9a06e3·...·]-41">}</span><span·class="p">,</span><span·class="w"> |
| 174 | ······</span><span·class="p"·data-group-id="1246558712-44">{</span><span·class="ss">app</span><span·class="p">,</span><span·class="ss">runtime_tools</span><span·class="p">,</span><span·class="p"·data-group-id="1246558712-45">[</span><span·class="p"·data-group-id="1246558712-46">{</span><span·class="ss">incl_cond</span><span·class="p">,</span><span·class="ss">exclude</span><span·class="p"·data-group-id="1246558712-46">}</span><span·class="p"·data-group-id="1246558712-45">]</span><span·class="p"·data-group-id="1246558712-44">}</span><span·class="p">,</span><span·class="w"> | ||
| 175 | ······</span><span·class="p"·data-group-id=" | 174 | ······</span><span·class="p"·data-group-id="8266808127-44">{</span><span·class="ss">app</span><span·class="p">,</span><span·class="ss">runtime_tools</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-45">[</span><span·class="p"·data-group-id="8266808127-46">{</span><span·class="[·...·truncated·by·diffoscope;·len:·254,·SHA:·bdf5eb4cd9886467ed84ae9be18c30037d9cd28a2d3eaa2731b36a57c1a08186·...·]</span><span·class="w"> |
| 175 | ······</span><span·class="p"·data-group-id="8266808127-47">{</span><span·class="ss">app</span><span·class="p">,</span><span·class="ss">syntax_tools</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-48">[</span><span·class="p"·data-group-id="8266808127-49">{</span><span·class="ss">incl_cond</span><span·class="p">,</span><span·class="ss">exclude</span><span·class="p"·data-group-id="8266808127-49">}</span><span·class="p"·data-group-id="8266808127-48">]</span><span·class="p"·data-group-id="8266808127-47">}</span><span·class="p"·data-group-id="8266808127-31">]</span><span·class="p"·data-group-id="8266808127-30">}</span><span·class="w"> | ||
| 176 | </span><span·class="mi">2</span><span·class="o">></span><span·class="gp·unselectable"> | 176 | </span><span·class="mi">2</span><span·class="o">></span><span·class="gp·unselectable"> |
| 177 | 2>·</span><span·class="p"·data-group-id=" | 177 | 2>·</span><span·class="p"·data-group-id="8266808127-50">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Server</span><span·class="p"·data-group-id="8266808127-50">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><spa[·...·truncated·by·diffoscope;·len:·319,·SHA:·b39c1722e5b35fc9ad86d94a2d0806d8cf1fc4462543fa5202b72044ddc81577·...·]-51">)</span><span·class="p">.</span><span·class="w"> |
| 178 | </span><span·class="p"·data-group-id=" | 178 | </span><span·class="p"·data-group-id="8266808127-53">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.66</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="8266808127-53">}</span><span·class="w"> |
| 179 | </span><span·class="mi">3</span><span·class="o">></span><span·class="gp·unselectable"> | 179 | </span><span·class="mi">3</span><span·class="o">></span><span·class="gp·unselectable"> |
| 180 | 3>·</span><span·class="nc">reltool</span><span·class="p">:</span><span·class="nf">get_config</span><span·class="p"·data-group-id=" | 180 | 3>·</span><span·class="nc">reltool</span><span·class="p">:</span><span·class="nf">get_config</span><span·class="p"·data-group-id="8266808127-54">(</span><span·class="n">Server</span><span·class="p"·data-group-id="8266808127-54">)</span><span·class="p">.</span><span·class="w"> |
| 181 | </span><span·class="p"·data-group-id=" | 181 | </span><span·class="p"·data-group-id="8266808127-55">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-56">{</span><span·class="ss">sys</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-57">[</span><span·class="p"·data-gro[·...·truncated·by·diffoscope;·len:·17,·SHA:·78132e3c855acd76a22498057ef0b18b00102e0eda6048fd1ebe3bc6bdda7568·...·]-58">{</span><span·class="ss">escript</span><span·class="p">,</span><span·class="s">"/usr/local/lib/erlang/lib/reltool-0.7.3/examples/display_args"</span><span·class="p">,</span><span·class="w"> |
| 182 | ···················</span><span·class="p"·data-group-id=" | 182 | ···················</span><span·class="p"·data-group-id="8266808127-59">[</span><span·class="p"·data-group-id="8266808127-60">{</span><span·class="ss">incl_cond</span><span·class="p">,</span><span·class="ss">include</span><span·class="p"·data-group-id="8266808127-60">}</span><span·class="p"·data-group-id="826680[·...·truncated·by·diffoscope;·len:·58,·SHA:·44c6fe9dcdc9f8672f21467bd9d86837e759499248f9f5b4d07b7e2199379b2a·...·]-58">}</span><span·class="p">,</span><span·class="w"> |
| 183 | ··········</span><span·class="p"·data-group-id=" | 183 | ··········</span><span·class="p"·data-group-id="8266808127-61">{</span><span·class="ss">app</span><span·class="p">,</span><span·class="ss">inets</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-62">[</span><span·class="p"·data-group-id="8266808127-63">{</span><span·class="ss">incl[·...·truncated·by·diffoscope;·len:·216,·SHA:·704218cc47923a521ac7293723c59414cd777ea19961a3464f9a80d57d364706·...·]-61">}</span><span·class="p">,</span><span·class="w"> |
| 184 | ··········</span><span·class="p"·data-group-id=" | 184 | ··········</span><span·class="p"·data-group-id="8266808127-64">{</span><span·class="ss">app</span><span·class="p">,</span><span·class="ss">mnesia</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-65">[</span><span·class="p"·data-group-id="8266808127-66">{</span><span·class="ss">inc[·...·truncated·by·diffoscope;·len:·217,·SHA:·110833d3e2e40aca4743434522538a4ed3d8bb346c80d8b80ec2f91b75fac7c3·...·]-64">}</span><span·class="p">,</span><span·class="w"> |
| 185 | ··········</span><span·class="p"·data-group-id=" | 185 | ··········</span><span·class="p"·data-group-id="8266808127-67">{</span><span·class="ss">app</span><span·class="p">,</span><span·class="ss">runtime_tools</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-68">[</span><span·class="p"·data-group-id="8266808127-69">{</span><span·class="[·...·truncated·by·diffoscope;·len:·224,·SHA:·8861bc2f4da238ad4a549e715cacad6db066e89fe3ff657d30ec5056e43b0574·...·]-67">}</span><span·class="p">,</span><span·class="w"> |
| 186 | ··········</span><span·class="p"·data-group-id=" | 186 | ··········</span><span·class="p"·data-group-id="8266808127-70">{</span><span·class="ss">app</span><span·class="p">,</span><span·class="ss">ssl</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-71">[</span><span·class="p"·data-group-id="8266808127-72">{</span><span·class="ss">incl_c[·...·truncated·by·diffoscope;·len:·214,·SHA:·984e97819001c7a0315775906a5738af62490d8f34ec480d04b8582a1b5a4506·...·]-70">}</span><span·class="p">,</span><span·class="w"> |
| 187 | ··········</span><span·class="p"·data-group-id=" | 187 | ··········</span><span·class="p"·data-group-id="8266808127-73">{</span><span·class="ss">app</span><span·class="p">,</span><span·class="ss">syntax_tools</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-74">[</span><span·class="p"·data-group-id="8266808127-75">{</span><span·class="s[·...·truncated·by·diffoscope;·len:·385,·SHA:·6191604fa82dbc324cf4ba34c8da7f2efdcb0d15a4b9244fb471219d97dada30·...·]-55">}</span><span·class="w"> |
| 188 | </span><span·class="mi">4</span><span·class="o">></span><span·class="gp·unselectable"> | 188 | </span><span·class="mi">4</span><span·class="o">></span><span·class="gp·unselectable"> |
| 189 | 4>·</span><span·class="nc">reltool</span><span·class="p">:</span><span·class="nf">get_config</span><span·class="p"·data-group-id=" | 189 | 4>·</span><span·class="nc">reltool</span><span·class="p">:</span><span·class="nf">get_config</span><span·class="p"·data-group-id="8266808127-76">(</span><span·class="n">Server</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">false</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">false</span><span·class="p"·data-group-id="8266808127-76">)</span><span·class="p">.</span><span·class="w"> |
| 190 | </span><span·class="p"·data-group-id=" | 190 | </span><span·class="p"·data-group-id="8266808127-77">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-78">{</span><span·class="ss">sys</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-79">[</span><span·class="p"·data-gro[·...·truncated·by·diffoscope;·len:·17,·SHA:·78132e3c855acd76a22498057ef0b18b00102e0eda6048fd1ebe3bc6bdda7568·...·]-80">{</span><span·class="ss">escript</span><span·class="p">,</span><span·class="s">"/usr/local/lib/erlang/lib/reltool-0.7.3/examples/display_args"</span><span·class="p">,</span><span·class="w"> |
| 191 | ···················</span><span·class="p"·data-group-id=" | 191 | ···················</span><span·class="p"·data-group-id="8266808127-81">[</span><span·class="p"·data-group-id="8266808127-82">{</span><span·class="ss">incl_cond</span><span·class="p">,</span><span·class="ss">include</span><span·class="p"·data-group-id="8266808127-82">}</span><span·class="p"·data-group-id="826680[·...·truncated·by·diffoscope;·len:·58,·SHA:·357563b05778b3ea3d5f700d69dbc85ede7e63b8ae7cd59fc908ab46bd20ca51·...·]-80">}</span><span·class="p">,</span><span·class="w"> |
| 192 | ··········</span><span·class="p"·data-group-id=" | 192 | ··········</span><span·class="p"·data-group-id="8266808127-83">{</span><span·class="ss">app</span><span·class="p">,</span><span·class="ss">inets</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-84">[</span><span·class="p"·data-group-id="8266808127-85">{</span><span·class="ss">incl[·...·truncated·by·diffoscope;·len:·216,·SHA:·6766cfa05c9af8a288d381e4905d4e81ae3a85d0c68e1ead4de439d07b2b0708·...·]-83">}</span><span·class="p">,</span><span·class="w"> |
| 193 | ··········</span><span·class="p"·data-group-id=" | 193 | ··········</span><span·class="p"·data-group-id="8266808127-86">{</span><span·class="ss">app</span><span·class="p">,</span><span·class="ss">mnesia</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-87">[</span><span·class="p"·data-group-id="8266808127-88">{</span><span·class="ss">inc[·...·truncated·by·diffoscope;·len:·217,·SHA:·ba7b42c158988d4a84f59303608f35a9f3ce738fc32e0e171c719ef0734569b7·...·]-86">}</span><span·class="p">,</span><span·class="w"> |
| 194 | ··········</span><span·class="p"·data-group-id=" | 194 | ··········</span><span·class="p"·data-group-id="8266808127-89">{</span><span·class="ss">app</span><span·class="p">,</span><span·class="ss">runtime_tools</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-90">[</span><span·class="p"·data-group-id="8266808127-91">{</span><span·class="[·...·truncated·by·diffoscope;·len:·224,·SHA:·a49ce9547cd091726be44ec8fdf3c17c9f1d9541227be525a46320e5d9e0e9af·...·]-89">}</span><span·class="p">,</span><span·class="w"> |
| 195 | ··········</span><span·class="p"·data-group-id=" | 195 | ··········</span><span·class="p"·data-group-id="8266808127-92">{</span><span·class="ss">app</span><span·class="p">,</span><span·class="ss">ssl</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-93">[</span><span·class="p"·data-group-id="8266808127-94">{</span><span·class="ss">incl_c[·...·truncated·by·diffoscope;·len:·214,·SHA:·367825041998d3d4c6ac05d3ed36888a640036cc4916323a8b36e7f6dcf13c3c·...·]-92">}</span><span·class="p">,</span><span·class="w"> |
| 196 | ··········</span><span·class="p"·data-group-id=" | 196 | ··········</span><span·class="p"·data-group-id="8266808127-95">{</span><span·class="ss">app</span><span·class="p">,</span><span·class="ss">syntax_tools</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-96">[</span><span·class="p"·data-group-id="8266808127-97">{</span><span·class="s[·...·truncated·by·diffoscope;·len:·385,·SHA:·03aef74389bec43f0243bb124d75c21489c1bcb44d2b1a5133cb338a084dc2d6·...·]-77">}</span><span·class="w"> |
| 197 | </span><span·class="mi">5</span><span·class="o">></span><span·class="gp·unselectable"> | 197 | </span><span·class="mi">5</span><span·class="o">></span><span·class="gp·unselectable"> |
| 198 | 5>·</span><span·class="nc">reltool</span><span·class="p">:</span><span·class="nf">get_config</span><span·class="p"·data-group-id=" | 198 | 5>·</span><span·class="nc">reltool</span><span·class="p">:</span><span·class="nf">get_config</span><span·class="p"·data-group-id="8266808127-98">(</span><span·class="n">Server</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">true</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">false</span><span·class="p"·data-group-id="8266808127-98">)</span><span·class="p">.</span><span·class="w"> |
| 199 | </span><span·class="p"·data-group-id=" | 199 | </span><span·class="p"·data-group-id="8266808127-99">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-100">{</span><span·class="ss">sys</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-101">[</span><span·class="p"·data-g[·...·truncated·by·diffoscope;·len:·186,·SHA:·81b8763fc94b5fcd1f6210ee94aa315dbaa924d625bb282dd9b6d35a455f5a3b·...·]-102">}</span><span·class="p">,</span><span·class="w"> |
| 200 | ··········</span><span·class="p"·data-group-id=" | 200 | ··········</span><span·class="p"·data-group-id="8266808127-103">{</span><span·class="ss">lib_dirs</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-104">[</span><span·class="p"·data-group-id="8266808127-104">]</span><span·class="p"·data-group-id="8266808127-103">}</span><span·class="p">,</span><span·class="w"> |
| 201 | ··········</span><span·class="p"·data-group-id=" | 201 | ··········</span><span·class="p"·data-group-id="8266808127-105">{</span><span·class="ss">escript</span><span·class="p">,</span><span·class="s">"/usr/local/lib/erlang/lib/reltool-0.7.3/examples/display_args"</span><span·class="p">,</span><span·class="w"> |
| 202 | ···················</span><span·class="p"·data-group-id=" | 202 | ···················</span><span·class="p"·data-group-id="8266808127-106">[</span><span·class="p"·data-group-id="8266808127-107">{</span><span·class="ss">incl_cond</span><span·class="p">,</span><span·class="ss">include</span><span·class="p"·data-group-id="8266808127-107">}</span><span·class="p"·data-group-id="826[·...·truncated·by·diffoscope;·len:·62,·SHA:·7e601d161b143dab24027f0dc1d03964907f52f9a88e1e4c3eee8080d8f0c857·...·]-105">}</span><span·class="p">,</span><span·class="w"> |
| 203 | ··········</span><span·class="p"·data-group-id=" | 203 | ··········</span><span·class="p"·data-group-id="8266808127-108">{</span><span·class="ss">mod_cond</span><span·class="p">,</span><span·class="ss">all</span><span·class="p"·data-group-id="8266808127-108">}</span><span·class="p">,</span><span·class="w"> |
| 204 | ··········</span><span·class="p"·data-group-id=" | 204 | ··········</span><span·class="p"·data-group-id="8266808127-109">{</span><span·class="ss">incl_cond</span><span·class="p">,</span><span·class="ss">derived</span><span·class="p"·data-group-id="8266808127-109">}</span><span·class="p">,</span><span·class="w"> |
| 205 | ··········</span><span·class="p"·data-group-id=" | 205 | ··········</span><span·class="p"·data-group-id="8266808127-110">{</span><span·class="ss">app</span><span·class="p">,</span><span·class="ss">inets</span><span·class="p">,</span><span·class="w"> |
| 206 | ···············</span><span·class="p"·data-group-id=" | 206 | ···············</span><span·class="p"·data-group-id="8266808127-111">[</span><span·class="p"·data-group-id="8266808127-112">{</span><span·class="ss">incl_cond</span><span·class="p">,</span><span·class="ss">include</span><span·class="p"·data-group-id="8266808127-112">}</span><span·class="p">,</span><span·clas[·...·truncated·by·diffoscope;·len:·502,·SHA:·a81f01627e5add22026b617ddc494f658eaa8341f9005f702addd1126ba1c213·...·]-110">}</span><span·class="p">,</span><span·class="w"> |
| 207 | ··········</span><span·class="p"·data-group-id=" | 207 | ··········</span><span·class="p"·data-group-id="8266808127-115">{</span><span·class="ss">app</span><span·class="p">,</span><span·class="ss">mnesia</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-116">[</span><span·class="p"·data-group-id="8266808127-117">{</span><span·class="ss">[·...·truncated·by·diffoscope;·len:·222,·SHA:·3177f804b925d2ba1760ea3fd45ce9a6833375c11d979231ef4f683c55686903·...·]-115">}</span><span·class="p">,</span><span·class="w"> |
| 208 | ··········</span><span·class="p"·data-group-id=" | 208 | ··········</span><span·class="p"·data-group-id="8266808127-118">{</span><span·class="ss">app</span><span·class="p">,</span><span·class="ss">runtime_tools</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-119">[</span><span·class="p"·data-group-id="8266808127-120">{</span><span·clas[·...·truncated·by·diffoscope;·len:·229,·SHA:·d6061c98aaeea0de7b8d3d036ee310cd4b13b512d33141f354f379aef91710dc·...·]-118">}</span><span·class="p">,</span><span·class="w"> |
| 209 | ··········</span><span·class="p"·data-group-id=" | 209 | ··········</span><span·class="p"·data-group-id="8266808127-121">{</span><span·class="ss">app</span><span·class="p">,</span><span·class="ss">ssl</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-122">[</span><span·class="p"·data-group-id="8266808127-123">{</span><span·class="ss">inc[·...·truncated·by·diffoscope;·len:·219,·SHA:·3117d288e6925ac2ff24782bbcd7c7216842bd830dedfab204b89c232b81f1f7·...·]-121">}</span><span·class="p">,</span><span·class="w"> |
| 210 | ··········</span><span·class="p"·data-group-id=" | 210 | ··········</span><span·class="p"·data-group-id="8266808127-124">{</span><span·class="ss">app</span><span·class="p">,</span><span·class="ss">syntax_tools</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-125">[</span><span·class="p"·data-group-id="8266808127-126">{</span><span·class[·...·truncated·by·diffoscope;·len:·228,·SHA:·b5d34754d12956b65df480b67bec8e3e8e2a265477ee79027882cebdb3b28a51·...·]-124">}</span><span·class="p">,</span><span·class="w"> |
| 211 | ··········</span><span·class="p"·data-group-id=" | 211 | ··········</span><span·class="p"·data-group-id="8266808127-127">{</span><span·class="ss">boot_rel</span><span·class="p">,</span><span·class="s">"start_clean"</span><span·class="p"·data-group-id="8266808127-127">}</span><span·class="p">,</span><span·class="w"> |
| 212 | ··········</span><span·class="p"·data-group-id=" | 212 | ··········</span><span·class="p"·data-group-id="8266808127-128">{</span><span·class="ss">rel</span><span·class="p">,</span><span·class="s">"start_clean"</span><span·class="p">,</span><span·class="s">"1.0"</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-129">[<[·...·truncated·by·diffoscope;·len:·102,·SHA:·7e74ab78a99bded39d138eac3ce6533f761c34644e4ce6e11fc04c0f68659d12·...·]-128">}</span><span·class="p">,</span><span·class="w"> |
| 213 | ··········</span><span·class="p"·data-group-id=" | 213 | ··········</span><span·class="p"·data-group-id="8266808127-130">{</span><span·class="ss">rel</span><span·class="p">,</span><span·class="s">"start_sasl"</span><span·class="p">,</span><span·class="s">"1.0"</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-131">[</[·...·truncated·by·diffoscope;·len:·129,·SHA:·367a353f261224765434f7af01940be46deb52af86f372e4aed4dd7d1c7bd565·...·]-130">}</span><span·class="p">,</span><span·class="w"> |
| 214 | ··········</span><span·class="p"·data-group-id=" | 214 | ··········</span><span·class="p"·data-group-id="8266808127-132">{</span><span·class="ss">emu_name</span><span·class="p">,</span><span·class="s">"beam"</span><span·class="p"·data-group-id="8266808127-132">}</span><span·class="p">,</span><span·class="w"> |
| 215 | ··········</span><span·class="p"·data-group-id=" | 215 | ··········</span><span·class="p"·data-group-id="8266808127-133">{</span><span·class="ss">relocatable</span><span·class="p">,</span><span·class="ss">true</span><span·class="p"·data-group-id="8266808127-133">}</span><span·class="p">,</span><span·class="w"> |
| 216 | ··········</span><span·class="p"·data-group-id=" | 216 | ··········</span><span·class="p"·data-group-id="8266808127-134">{</span><span·class="ss">profile</span><span·class="p">,</span><span·class="ss">development</span><span·class="p"·data-group-id="8266808127-134">}</span><span·class="p">,</span><span·class="w"> |
| 217 | ··········</span><span·class="p"·data-group-id=" | 217 | ··········</span><span·class="p"·data-group-id="8266808127-135">{</span><span·class="ss">incl_sys_filters</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-136">[</span><span·class="s">".*"</span><span·class="p"·data-group-id="8266808127-136">]</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·20,·SHA:·5dbd7eb38c62714bcb4001261c6258ec1564920c5cd8924cb5eea7bc073acac6·...·]-135">}</span><span·class="p">,</span><span·class="w"> |
| 218 | ··········</span><span·class="p"·data-group-id=" | 218 | ··········</span><span·class="p"·data-group-id="8266808127-137">{</span><span·class="ss">excl_sys_filters</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-138">[</span><span·class="p"·data-group-id="8266808127-138">]</span><span·class="p"·data-group-id="8266808127-137">}</span><span·class="p">,</span><span·class="w"> |
| 219 | ··········</span><span·class="p"·data-group-id=" | 219 | ··········</span><span·class="p"·data-group-id="8266808127-139">{</span><span·class="ss">incl_app_filters</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-140">[</span><span·class="s">".*"</span><span·class="p"·data-group-id="8266808127-140">]</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·20,·SHA:·5dbd7eb38c62714bcb4001261c6258ec1564920c5cd8924cb5eea7bc073acac6·...·]-139">}</span><span·class="p">,</span><span·class="w"> |
| 220 | ··········</span><span·class="p"·data-group-id=" | 220 | ··········</span><span·class="p"·data-group-id="8266808127-141">{</span><span·class="ss">excl_app_filters</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-142">[</span><span·class="p"·data-group-id="8266808127-142">]</span><span·class="p"·data-group-id="8266808127-141">}</span><span·class="p">,</span><span·class="w"> |
| 221 | ··········</span><span·class="p"·data-group-id=" | 221 | ··········</span><span·class="p"·data-group-id="8266808127-143">{</span><span·class="ss">rel_app_type</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="8266808127-143">}</span><span·class="p">,</span><span·class="w"> |
| 222 | ··········</span><span·class="p"·data-group-id=" | 222 | ··········</span><span·class="p"·data-group-id="8266808127-144">{</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="8266808127-144">}</span><span·class="p">|</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·cla[·...·truncated·by·diffoscope;·len:·142,·SHA:·0b291bbefbdbdf11ec38c3b320424fdaa4775eed579db106df177c2134dbbd14·...·]-99">}</span><span·class="w"> |
| 223 | </span><span·class="mi">6</span><span·class="o">></span><span·class="gp·unselectable"> | 223 | </span><span·class="mi">6</span><span·class="o">></span><span·class="gp·unselectable"> |
| 224 | 6>·</span><span·class="nc">reltool</span><span·class="p">:</span><span·class="nf">get_config</span><span·class="p"·data-group-id=" | 224 | 6>·</span><span·class="nc">reltool</span><span·class="p">:</span><span·class="nf">get_config</span><span·class="p"·data-group-id="8266808127-145">(</span><span·class="n">Server</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">true</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">true</span><span·class="p"·data-group-id="8266808127-145">)</span><span·class="p">.</span><span·class="w"> |
| 225 | </span><span·class="p"·data-group-id=" | 225 | </span><span·class="p"·data-group-id="8266808127-146">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-147">{</span><span·class="ss">sys</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-148">[</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·187,·SHA:·9e26b2baf1f0778eb119d7913e23a9b57ff538c7c863aef0c6fb72537eaa6586·...·]-149">}</span><span·class="p">,</span><span·class="w"> |
| 226 | ··········</span><span·class="p"·data-group-id=" | 226 | ··········</span><span·class="p"·data-group-id="8266808127-150">{</span><span·class="ss">lib_dirs</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-151">[</span><span·class="p"·data-group-id="8266808127-151">]</span><span·class="p"·data-group-id="8266808127-150">}</span><span·class="p">,</span><span·class="w"> |
| 227 | ··········</span><span·class="p"·data-group-id=" | 227 | ··········</span><span·class="p"·data-group-id="8266808127-152">{</span><span·class="ss">escript</span><span·class="p">,</span><span·class="s">"/usr/local/lib/erlang/lib/reltool-0.7.3/examples/display_args"</span><span·class="p">,</span><span·class="w"> |
| 228 | ···················</span><span·class="p"·data-group-id=" | 228 | ···················</span><span·class="p"·data-group-id="8266808127-153">[</span><span·class="p"·data-group-id="8266808127-154">{</span><span·class="ss">incl_cond</span><span·class="p">,</span><span·class="ss">include</span><span·class="p"·data-group-id="8266808127-154">}</span><span·class="p"·data-group-id="826[·...·truncated·by·diffoscope;·len:·62,·SHA:·db8420b60d459ed2963e41b9b04253c76a9373b54faccb3fe69f57f353090ff2·...·]-152">}</span><span·class="p">,</span><span·class="w"> |
| 229 | ··········</span><span·class="p"·data-group-id=" | 229 | ··········</span><span·class="p"·data-group-id="8266808127-155">{</span><span·class="ss">mod_cond</span><span·class="p">,</span><span·class="ss">all</span><span·class="p"·data-group-id="8266808127-155">}</span><span·class="p">,</span><span·class="w"> |
| 230 | ··········</span><span·class="p"·data-group-id=" | 230 | ··········</span><span·class="p"·data-group-id="8266808127-156">{</span><span·class="ss">incl_cond</span><span·class="p">,</span><span·class="ss">derived</span><span·class="p"·data-group-id="8266808127-156">}</span><span·class="p">,</span><span·class="w"> |
| 231 | ··········</span><span·class="p"·data-group-id=" | 231 | ··········</span><span·class="p"·data-group-id="8266808127-157">{</span><span·class="ss">erts</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-158">[</span><span·class="p"·data-group-id="8266808127-159">{</span><span·class="ss">app</span><span·class="p">,</span><span·class="ss">erts</span><span·class="p">,</span><span·class="w"> |
| 232 | ······················</span><span·class="p"·data-group-id=" | 232 | ······················</span><span·class="p"·data-group-id="8266808127-160">[</span><span·class="p"·data-group-id="8266808127-161">{</span><span·class="ss">vsn</span><span·class="p">,</span><span·class="s">"10.0"</span><span·class="p"·data-group-id="8266808127-161">}</span><span·class="p">,</span><span·class="w"> |
| 233 | ·······················</span><span·class="p"·data-group-id=" | 233 | ·······················</span><span·class="p"·data-group-id="8266808127-162">{</span><span·class="ss">lib_dir</span><span·class="p">,</span><span·class="s">"/usr/local/lib/erlang/lib/erts-10.0"</span><span·class="p"·data-group-id="8266808127-162">}</span><span·class="p">,</span><span·class="w"> |
| 234 | ·······················</span><span·class="p"·data-group-id=" | 234 | ·······················</span><span·class="p"·data-group-id="8266808127-163">{</span><span·class="ss">mod</span><span·class="p">,</span><span·class="ss">erl_prim_loader</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-164">[</span><span·class="p"·data-group-id="8266808127-164">]</span><span·cl[·...·truncated·by·diffoscope;·len:·33,·SHA:·913302e0c4b587be31c280d361f22eaa908ff4f1a8c8020e5d18284f998c470b·...·]-163">}</span><span·class="p">,</span><span·class="w"> |
| 235 | ·······················</span><span·class="p"·data-group-id=" | 235 | ·······················</span><span·class="p"·data-group-id="8266808127-165">{</span><span·class="ss">mod</span><span·class="p">,</span><span·class="ss">erl_tracer</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-166">[</span><span·class="p"·data-group-id="8266808127-166">]</span><span·class="[·...·truncated·by·diffoscope;·len:·28,·SHA:·2934b9bb8157dc5eef9967ee29f000b0fc099648711b644042d70c3f50a647f7·...·]-165">}</span><span·class="p">,</span><span·class="w"> |
| 236 | ·······················</span><span·class="p"·data-group-id=" | 236 | ·······················</span><span·class="p"·data-group-id="8266808127-167">{</span><span·class="ss">mod</span><span·class="p">,</span><span·class="ss">erlang</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-168">[</span><span·class="p"·data-group-id="8266808127-168">]</span><span·class="p"·d[·...·truncated·by·diffoscope;·len:·24,·SHA:·6206df0e1767ac541b16d178e8e0d785375913bc188236e616757adb7cb50b37·...·]-167">}</span><span·class="p">,</span><span·class="w"> |
| 237 | ·······················</span><span·class="p"·data-group-id=" | 237 | ·······················</span><span·class="p"·data-group-id="8266808127-169">{</span><span·class="ss">mod</span><span·class="p">,</span><span·class="ss">erts_code_purger</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-170">[</span><span·class="p"·data-group-id="8266808127-170">]</span><span·c[·...·truncated·by·diffoscope;·len:·34,·SHA:·71c30d6dfc7fdf27ef36c132d1f574ae32512ba5382872c583947b3ea7e55c09·...·]-169">}</span><span·class="p">,</span><span·class="w"> |
| 238 | ·······················</span><span·class="p"·data-group-id=" | 238 | ·······················</span><span·class="p"·data-group-id="8266808127-171">{</span><span·class="ss">mod</span><span·class="p">,</span><span·class="ss">erts_dirty_process_signal_handler</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-172">[</span><span·class="p"·data-group-id="8266808127-172[·...·truncated·by·diffoscope;·len:·51,·SHA:·9c4497cb6eca48eac97d8738038372413ec72eb0db0bcd9b38799e098d120be0·...·]-171">}</span><span·class="p">,</span><span·class="w"> |
| 239 | ·······················</span><span·class="p"·data-group-id=" | 239 | ·······················</span><span·class="p"·data-group-id="8266808127-173">{</span><span·class="ss">mod</span><span·class="p">,</span><span·class="ss">erts_internal</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-174">[</span><span·class="p"·data-group-id="8266808127-174">]</span><span·clas[·...·truncated·by·diffoscope;·len:·31,·SHA:·1b293a3bd53a21ed8ec26097cbb9211a77d728fc8fb2436c975b71abcaef520c·...·]-173">}</span><span·class="p">,</span><span·class="w"> |
| 240 | ·······················</span><span·class="p"·data-group-id=" | 240 | ·······················</span><span·class="p"·data-group-id="8266808127-175">{</span><span·class="ss">mod</span><span·class="p">,</span><span·class="ss">erts_literal_area_collector</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-176">[</span><span·class="p"·data-group-id="8266808127-176">]</s[·...·truncated·by·diffoscope;·len:·45,·SHA:·20eda2f496b0f8c1d933a905cb17cb41c5ae5b460373862713a9abd77bdc05ff·...·]-175">}</span><span·class="p">,</span><span·class="w"> |
| 241 | ·······················</span><span·class="p"·data-group-id=" | 241 | ·······················</span><span·class="p"·data-group-id="8266808127-177">{</span><span·class="ss">mod</span><span·class="p">,</span><span·class="ss">init</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-178">[</span><span·class="p"·data-group-id="8266808127-178">]</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·22,·SHA:·c95739a5bf5dc0615aa95d5d5f5964cc354406dc333595ffb8ea7f94409dba19·...·]-177">}</span><span·class="p">,</span><span·class="w"> |
| 242 | ·······················</span><span·class="p"·data-group-id=" | 242 | ·······················</span><span·class="p"·data-group-id="8266808127-179">{</span><span·class="ss">mod</span><span·class="p">,</span><span·class="ss">erl_init</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="8266808127-179">}</span><span·class="p">,</span><span·class="w"> |
| 243 | ·······················</span><span·class="p"·data-group-id=" | 243 | ·······················</span><span·class="p"·data-group-id="8266808127-180">{</span><span·class="ss">mod</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="8266808127-180">}</span><span·class="p">,</span><span·class="w"> |
| 244 | ·······················</span><span·class="p"·data-group-id=" | 244 | ·······················</span><span·class="p"·data-group-id="8266808127-181">{</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="8266808127-181">}</span><span·class="p">|</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·cla[·...·truncated·by·diffoscope;·len:·197,·SHA:·a88614c56c9037a3bc88c00de9a0363dd069b456aed6b49826ca171e1484c99b·...·]-157">}</span><span·class="p">,</span><span·class="w"> |
| 245 | ··········</span><span·class="p"·data-group-id=" | 245 | ··········</span><span·class="p"·data-group-id="8266808127-182">{</span><span·class="ss">app</span><span·class="p">,</span><span·class="ss">compiler</span><span·class="p">,</span><span·class="w"> |
| 246 | ···············</span><span·class="p"·data-group-id=" | 246 | ···············</span><span·class="p"·data-group-id="8266808127-183">[</span><span·class="p"·data-group-id="8266808127-184">{</span><span·class="ss">vsn</span><span·class="p">,</span><span·class="s">"7.0.4"</span><span·class="p"·data-group-id="8266808127-184">}</span><span·class="p">,</span><span·class="w"> |
| 247 | ················</span><span·class="p"·data-group-id=" | 247 | ················</span><span·class="p"·data-group-id="8266808127-185">{</span><span·class="ss">lib_dir</span><span·class="p">,</span><span·class="s">"/usr/local/lib/erlang/lib/compiler-7.0.4"</span><span·class="p"·data-group-id="8266808127-185">}</span><span·class="p">,</span><span·class="w"> |
| 248 | ················</span><span·class="p"·data-group-id=" | 248 | ················</span><span·class="p"·data-group-id="8266808127-186">{</span><span·class="ss">mod</span><span·class="p">,</span><span·class="ss">beam_a</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-187">[</span><span·class="p"·data-group-id="8266808127-187">]</span><span·class="p"·d[·...·truncated·by·diffoscope;·len:·24,·SHA:·6206df0e1767ac541b16d178e8e0d785375913bc188236e616757adb7cb50b37·...·]-186">}</span><span·class="p">,</span><span·class="w"> |
| 249 | ················</span><span·class="p"·data-group-id=" | 249 | ················</span><span·class="p"·data-group-id="8266808127-188">{</span><span·class="ss">mod</span><span·class="p">,</span><span·class="ss">beam_asm</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-189">[</span><span·class="p"·data-group-id="8266808127-189">]</span><span·class="p"[·...·truncated·by·diffoscope;·len:·26,·SHA:·3161e435785f7ab6a5364fd1fda1b6827115b253d9d6965cea8f17de34db6eb6·...·]-188">}</span><span·class="p">,</span><span·class="w"> |
| 250 | ················</span><span·class="p"·data-group-id=" | 250 | ················</span><span·class="p"·data-group-id="8266808127-190">{</span><span·class="ss">mod</span><span·class="p">,</span><span·class="ss">beam_block</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-191">[</span><span·class="p"·data-group-id="8266808127-191">]</span><span·class="[·...·truncated·by·diffoscope;·len:·28,·SHA:·2934b9bb8157dc5eef9967ee29f000b0fc099648711b644042d70c3f50a647f7·...·]-190">}</span><span·class="p">,</span><span·class="w"> |
| 251 | ················</span><span·class="p"·data-group-id=" | 251 | ················</span><span·class="p"·data-group-id="8266808127-192">{</span><span·class="ss">mod</span><span·class="p">,</span><span·class="ss">beam_bs</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-193">[</span><span·class="p"·data-group-id="8266808127-193">]</span><span·class="p"·[·...·truncated·by·diffoscope;·len:·25,·SHA:·c1548d54fda4c9827bbe8ba55afd9b2b4c4ee705edba9455b26fc231eb8bf2cd·...·]-192">}</span><span·class="p">,</span><span·class="w"> |
| 252 | ················</span><span·class="p"·data-group-id=" | 252 | ················</span><span·class="p"·data-group-id="8266808127-194">{</span><span·class="ss">mod</span><span·class="p">,</span><span·class="ss">beam_bsm</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-195">[</span><span·class="p"·data-group-id="8266808127-195">]</span><span·class="p"[·...·truncated·by·diffoscope;·len:·26,·SHA:·3161e435785f7ab6a5364fd1fda1b6827115b253d9d6965cea8f17de34db6eb6·...·]-194">}</span><span·class="p">,</span><span·class="w"> |
| 253 | ················</span><span·class="p"·data-group-id=" | 253 | ················</span><span·class="p"·data-group-id="8266808127-196">{</span><span·class="ss">mod</span><span·class="p">,</span><span·class="ss">beam_clean</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-197">[</span><span·class="p"·data-group-id="8266808127-197">]</span><span·class="[·...·truncated·by·diffoscope;·len:·28,·SHA:·2934b9bb8157dc5eef9967ee29f000b0fc099648711b644042d70c3f50a647f7·...·]-196">}</span><span·class="p">,</span><span·class="w"> |
| 254 | ················</span><span·class="p"·data-group-id=" | 254 | ················</span><span·class="p"·data-group-id="8266808127-198">{</span><span·class="ss">mod</span><span·class="p">,</span><span·class="ss">beam_dead</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-199">[</span><span·class="p"·data-group-id="8266808127-199">]</span><span·class="p[·...·truncated·by·diffoscope;·len:·27,·SHA:·84bcc0792a5c0d750bb5f43a71949bebfbc0e40f445e4ddcbcea8a387c02a2d5·...·]-198">}</span><span·class="p">,</span><span·class="w"> |
| 255 | ················</span><span·class="p"·data-group-id=" | 255 | ················</span><span·class="p"·data-group-id="8266808127-200">{</span><span·class="ss">mod</span><span·class="p">,</span><span·class="ss">beam_dict</span><span·class="p">,</span><span·class="p"·data-group-id="8266808127-201">[</span><span·class="p"·data-group-id="8266808127-201">]</span><span·class="p[·...·truncated·by·diffoscope;·len:·27,·SHA:·84bcc0792a5c0d750bb5f43a71949bebfbc0e40f445e4ddcbcea8a387c02a2d5·...·]-200">}</span><span·class="p">,</span><span·class="w"> |
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| 127 | ··</h1> | 127 | ··</h1> |
| 128 | ····<section·id="moduledoc"> | 128 | ····<section·id="moduledoc"> |
| 129 | <p>The·Text·Based·Trace·Facility</p><p>This·module·implements·a·text·based·interface·to·the | 129 | <p>The·Text·Based·Trace·Facility</p><p>This·module·implements·a·text·based·interface·to·the |
| 130 | <a·href="../../../../lib/kernel-10.2.3/doc/html/trace.html#process/4"><code·class="inline">trace:process/4</code></a>,·<a·href="../../../../lib/kernel-10.2.3/doc/html/trace.html#port/4"><code·class="inline">trace:port/4</code></a>,·and·<a·href="../../../../lib/kernel-10.2.3/doc/html/trace.html#function/4"><code·class="inline">trace:function/4</code></a>·BIFs, | 130 | <a·href="../../../../lib/kernel-10.2.3/doc/html/trace.html#process/4"><code·class="inline">trace:process/4</code></a>,·<a·href="../../../../lib/kernel-10.2.3/doc/html/trace.html#port/4"><code·class="inline">trace:port/4</code></a>,·and·<a·href="../../../../lib/kernel-10.2.3/doc/html/trace.html#function/4"><code·class="inline">trace:function/4</code></a>·BIFs, |
| 131 | simplifying·tracing·of·functions,·processes,·ports,·and·messages.</p><p>To·quickly·get·started·on·tracing·function·calls·you·can·use·the | 131 | simplifying·tracing·of·functions,·processes,·ports,·and·messages.</p><p>To·quickly·get·started·on·tracing·function·calls·you·can·use·the |
| 132 | following·code·in·the·Erlang·shell:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">tracer</span><span·class="p"·data-group-id=" | 132 | following·code·in·the·Erlang·shell:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">tracer</span><span·class="p"·data-group-id="8757520770-1">(</span><span·class="p"·data-group-id="8757520770-1">)</span><span·class="p">.</span><span·class="w">··</span><span·class="c1">%·Start·the·default·trace·message·receiver</span><span·class="w"> |
| 133 | </span><span·class="p"·data-group-id=" | 133 | </span><span·class="p"·data-group-id="8757520770-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.90</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="8757520770-2">}</span><span·class="gp·unselectable"> |
| 134 | 2>·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">p</span><span·class="p"·data-group-id=" | 134 | 2>·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">p</span><span·class="p"·data-group-id="8757520770-3">(</span><span·class="ss">all</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">c</span><span·class="p"·data-group-id="8757520770-3">)</span><span·class="p">.</span><span·class="w">·</span><span·class="c1">%·Set·upp·call·tracing·on·all·processes</span><span·class="w"> |
| 135 | </span><span·class="p"·data-group-id=" | 135 | </span><span·class="p"·data-group-id="8757520770-4">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="8757520770-5">[</span><span·class="p"·data-group-id="8757520770-6">{</span><span·class="ss">matched</span><span·class="p">,</span><span·class="ss">nonode[·...·truncated·by·diffoscope;·len:·211,·SHA:·e6bbaad927bea337c2d777ae5b416fe6574189092321494a77b0d046f94c524b·...·]-4">}</span><span·class="gp·unselectable"> |
| 136 | 3>·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">tp</span><span·class="p"·data-group-id=" | 136 | 3>·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">tp</span><span·class="p"·data-group-id="8757520770-7">(</span><span·class="ss">lists</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">seq</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">cx</span><span·class="p"·data-group-id="8757520770-7">)</span><span·class="p">.</span><span·class="w">·</span><span·class="c1">%··Set·up·call·and·exception·tracing·on·lists:seq/2,3</span><span·class="w"> |
| 137 | </span><span·class="p"·data-group-id=" | 137 | </span><span·class="p"·data-group-id="8757520770-8">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="8757520770-9">[</span><span·class="p"·data-group-id="8757520770-10">{</span><span·class="ss">matched</span><span·class="p">,</span><span·class="ss">nonod[·...·truncated·by·diffoscope;·len:·423,·SHA:·c395144263569041cb00670adf32149b68709740a1a7d1418d82e92a730e972c·...·]-8">}</span><span·class="gp·unselectable"> |
| 138 | 4>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">seq</span><span·class="p"·data-group-id=" | 138 | 4>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">seq</span><span·class="p"·data-group-id="8757520770-12">(</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">10</span><span·class="p"·data-group-id="8757520770-12">)</span><span·class="p">.</span><span·class="w"> |
| 139 | </span><span·class="p"·data-group-id=" | 139 | </span><span·class="p"·data-group-id="8757520770-13">(</span><span·class="o"><</span><span·class="mf">0.88</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="8757520770-13">)</span><span·class="w">·</span><span·class="ss">call</s[·...·truncated·by·diffoscope;·len:·885,·SHA:·14e4de92e6f85586679ff9167bd4c5156b52d68e4689d8468309b70aad79a6af·...·]-15">)</span><span·class="w"> |
| 140 | </span><span·class="p"·data-group-id=" | 140 | </span><span·class="p"·data-group-id="8757520770-18">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">5</span><span·class=[·...·truncated·by·diffoscope;·len:·275,·SHA:·39eb993cf5a021afe98565fd8aefd5b2be2c0a022294636ffd72f2b062aae28b·...·]-18">]</span><span·class="w"> |
| 141 | </span><span·class="p"·data-group-id=" | 141 | </span><span·class="p"·data-group-id="8757520770-19">(</span><span·class="o"><</span><span·class="mf">0.88</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="8757520770-19">)</span><span·class="w">·</span><span·class="ss">returne[·...·truncated·by·diffoscope;·len:·851,·SHA:·4736996cc4b75c15b2079ebf0821d6360deddbd1d3c30cac61f0ac89b7402611·...·]-20">]</span></code></pre><p>The·utilities·are·also·suitable·to·use·in·system·testing·on·large·systems,·where |
| 142 | other·tools·have·too·severe·impact·on·the·system·performance.·Some·primitive | 142 | other·tools·have·too·severe·impact·on·the·system·performance.·Some·primitive |
| 143 | support·for·sequential·tracing·is·also·included;·see·the | 143 | support·for·sequential·tracing·is·also·included;·see·the |
| 144 | <a·href="dbg.html#advanced">advanced·topics</a>·section.</p><h2·id="module-simple-tracing-from-the-shell-with-no-prior-set-up"·class="section-heading"> | 144 | <a·href="dbg.html#advanced">advanced·topics</a>·section.</p><h2·id="module-simple-tracing-from-the-shell-with-no-prior-set-up"·class="section-heading"> |
| 145 | ··<a·href="#module-simple-tracing-from-the-shell-with-no-prior-set-up"·class="hover-link"> | 145 | ··<a·href="#module-simple-tracing-from-the-shell-with-no-prior-set-up"·class="hover-link"> |
| 146 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 146 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 147 | ··</a> | 147 | ··</a> |
| 148 | ··<span·class="text">Simple·tracing·from·the·shell·with·no·prior·set·up</span> | 148 | ··<span·class="text">Simple·tracing·from·the·shell·with·no·prior·set·up</span> |
| 149 | </h2> | 149 | </h2> |
| 150 | <p>To·trace·a·call·to·a·function·with·minimal·fuss,·call·<a·href="#c/3"><code·class="inline">dbg:c(Module,·Name,·Arguments)</code></a>.·<a·href="#c/3"><code·class="inline">dbg:c/3</code></a>·starts·a·temporary·trace | 150 | <p>To·trace·a·call·to·a·function·with·minimal·fuss,·call·<a·href="#c/3"><code·class="inline">dbg:c(Module,·Name,·Arguments)</code></a>.·<a·href="#c/3"><code·class="inline">dbg:c/3</code></a>·starts·a·temporary·trace |
| 151 | receiver,·enables·all·trace·flags,·and·calls·the·designated·function | 151 | receiver,·enables·all·trace·flags,·and·calls·the·designated·function |
| 152 | from·a·temporary·process.·For·example,·here·is·how·to·trace·a·call | 152 | from·a·temporary·process.·For·example,·here·is·how·to·trace·a·call |
| 153 | to·<a·href="../../../../lib/kernel-10.2.3/doc/html/application.html#which_applications/0"><code·class="inline">application:which_applications/0</code></a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">c</span><span·class="p"·data-group-id=" | 153 | to·<a·href="../../../../lib/kernel-10.2.3/doc/html/application.html#which_applications/0"><code·class="inline">application:which_applications/0</code></a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">c</span><span·class="p"·data-group-id="2301117302-1">(</span><span·class="ss">application</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">which_applications</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2301117302-2">[</span><span·cl[·...·truncated·by·diffoscope;·len:·86,·SHA:·75ab694ca96a67931d986724c023aec20ecbedc2a01290edd517ead125316ae3·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 154 | </span><span·class="p"·data-group-id=" | 154 | </span><span·class="p"·data-group-id="2301117302-3">(</span><span·class="o"><</span><span·class="mf">0.92</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="2301117302-3">)</span><span·class="w">·</span><span·class="o"><</span[·...·truncated·by·diffoscope;·len:·338,·SHA:·f3389991f3907a6cfdf962e2aaa8995fa3e5dd3d564327967ac5dc5fcc90a23e·...·]-5">{</span><span·class="o"><</span><span·class="mf">0.92</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="w"> |
| 155 | ····································</span><span·class="p"·data-group-id=" | 155 | ····································</span><span·class="p"·data-group-id="2301117302-6">[</span><span·class="ss">alias</span><span·class="p">|</span><span·class="w"> |
| 156 | ·····································</span><span·class="p">#</span><span·class="n">Ref</span><span·class="o"><</span><span·class="mf">0.0</span><span·class="p">.</span><span·class="mf">11779.270031856</span><span·class="p">.</span><span·class="mf">1478295555.230456</span><span·class="o">></span><span·class="p"·data-group-id=" | 156 | ·····································</span><span·class="p">#</span><span·class="n">Ref</span><span·class="o"><</span><span·class="mf">0.0</span><span·class="p">.</span><span·class="mf">11779.270031856</span><span·class="p">.</span><span·class="mf">1478295555.230456</span><span·class="o">></span><span·class="p"·data-group-id="2301117302-6">]</span><span·class="p"·data-group-id="2301117302-5">}</span><span·class="p">,</span><span·class="w"> |
| 157 | ···································</span><span·class="ss">which_applications</span><span·class="p"·data-group-id=" | 157 | ···································</span><span·class="ss">which_applications</span><span·class="p"·data-group-id="2301117302-4">}</span><span·class="w">·</span><span·class="p"·data-group-id="2301117302-7">(</span><span·class="n">Timestamp</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="2301117302-8">{</span><span·class="mi">1710</span><span·class="p">,</span><span·class="w"> |
| 158 | ····································································</span><span·class="mi">847802</span><span·class="p">,</span><span·class="w"> | 158 | ····································································</span><span·class="mi">847802</span><span·class="p">,</span><span·class="w"> |
| 159 | ····································································</span><span·class="mi">479222</span><span·class="p"·data-group-id=" | 159 | ····································································</span><span·class="mi">479222</span><span·class="p"·data-group-id="2301117302-8">}</span><span·class="p"·data-group-id="2301117302-7">)</span><span·class="w"> |
| 160 | </span><span·class="p"·data-group-id=" | 160 | </span><span·class="p"·data-group-id="2301117302-9">(</span><span·class="o"><</span><span·class="mf">0.92</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="2301117302-9">)</span><span·class="w">·</span><span·class="ss">out</span[·...·truncated·by·diffoscope;·len:·707,·SHA:·53754e3f4844c5f73f56aa795a4b90cafa0485f7264c6830431896acdf7b8122·...·]-11">)</span><span·class="w"> |
| 161 | </span><span·class="p"·data-group-id=" | 161 | </span><span·class="p"·data-group-id="2301117302-13">(</span><span·class="o"><</span><span·class="mf">0.92</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="2301117302-13">)</span><span·class="w">·</span><span·class="ss">in</spa[·...·truncated·by·diffoscope;·len:·708,·SHA:·df5394382d3d42cbbc6ab9db9d46a12d03d0afc7bc7bd0991493befa2c3d28ca·...·]-15">)</span><span·class="w"> |
| 162 | </span><span·class="p"·data-group-id=" | 162 | </span><span·class="p"·data-group-id="2301117302-17">(</span><span·class="o"><</span><span·class="mf">0.92</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="2301117302-17">)</span><span·class="w">·</span><span·class="p"·data-gro[·...·truncated·by·diffoscope;·len:·522,·SHA:·da4c587c83f1b28e194a38aa776b331542d68e5c0c892e9545742840cc0ee208·...·]-20">]</span><span·class="p">,</span><span·class="w"> |
| 163 | ···············</span><span·class="p"·data-group-id=" | 163 | ···············</span><span·class="p"·data-group-id="2301117302-21">[</span><span·class="p"·data-group-id="2301117302-22">{</span><span·class="ss">stdlib</span><span·class="p">,</span><span·class="s">"ERTS··CXC·138·10"</span><span·class="p">,</span><span·class="s">"5.2.1"</span><span·clas[·...·truncated·by·diffoscope;·len:·31,·SHA:·30937715b895d8d4ac5eb7bf25ba240c4ce48e7ceec11c0641667e3be336c0c9·...·]-22">}</span><span·class="p">,</span><span·class="w"> |
| 164 | ················</span><span·class="p"·data-group-id=" | 164 | ················</span><span·class="p"·data-group-id="2301117302-23">{</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="s">"ERTS··CXC·138·10"</span><span·class="p">,</span><span·class="s">"9.2.2"</span><span·class="p"·data-group-id="2301117302-23">}</span><span·clas[·...·truncated·by·diffoscope;·len:·297,·SHA:·ee56dc1d63d8564ae9c1b1ee793882a3ec65db3702137169bda790b8cb47fcd5·...·]-25">{</span><span·class="mi">1710</span><span·class="p">,</span><span·class="w"> |
| 165 | ···································································</span><span·class="mi">847802</span><span·class="p">,</span><span·class="w"> | 165 | ···································································</span><span·class="mi">847802</span><span·class="p">,</span><span·class="w"> |
| 166 | ···································································</span><span·class="mi">479274</span><span·class="p"·data-group-id=" | 166 | ···································································</span><span·class="mi">479274</span><span·class="p"·data-group-id="2301117302-25">}</span><span·class="p"·data-group-id="2301117302-24">)</span><span·class="w"> |
| 167 | </span><span·class="p"·data-group-id=" | 167 | </span><span·class="p"·data-group-id="2301117302-26">[</span><span·class="p"·data-group-id="2301117302-27">{</span><span·class="ss">stdlib</span><span·class="p">,</span><span·class="s">"ERTS··CXC·138·10"</span><span·class="p">,</span><span·class="s">"5.2.1"</span><span·clas[·...·truncated·by·diffoscope;·len:·31,·SHA:·30937715b895d8d4ac5eb7bf25ba240c4ce48e7ceec11c0641667e3be336c0c9·...·]-27">}</span><span·class="p">,</span><span·class="w"> |
| 168 | ·</span><span·class="p"·data-group-id=" | 168 | ·</span><span·class="p"·data-group-id="2301117302-28">{</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="s">"ERTS··CXC·138·10"</span><span·class="p">,</span><span·class="s">"9.2.2"</span><span·class="p"·data-group-id="2301117302-28">}</span><span·clas[·...·truncated·by·diffoscope;·len:·31,·SHA:·30937715b895d8d4ac5eb7bf25ba240c4ce48e7ceec11c0641667e3be336c0c9·...·]-26">]</span></code></pre><p>Four·trace·events·are·generated:</p><ul><li>A·send·event·(<code·class="inline">!</code>)·for·the·sending·of·a·request·from·the·current·process |
| 169 | to·the·<code·class="inline">application_controller</code>·process.</li><li>A·schedule-out·event·(<code·class="inline">out</code>)·when·the·current·process·schedules·out·while | 169 | to·the·<code·class="inline">application_controller</code>·process.</li><li>A·schedule-out·event·(<code·class="inline">out</code>)·when·the·current·process·schedules·out·while |
| 170 | waiting·in·a·<code·class="inline">receive</code>·for·the·reply·to·arrive.</li><li>A·schedule-in·event·(<code·class="inline">in</code>)·when·the·current·process·is·scheduled·in·when | 170 | waiting·in·a·<code·class="inline">receive</code>·for·the·reply·to·arrive.</li><li>A·schedule-in·event·(<code·class="inline">in</code>)·when·the·current·process·is·scheduled·in·when |
| 171 | reply·has·arrived.</li><li>A·<code·class="inline">receive</code>·event·(<code·class="inline"><<</code>)·when·the·current·process·retrieves·the·reply·from | 171 | reply·has·arrived.</li><li>A·<code·class="inline">receive</code>·event·(<code·class="inline"><<</code>)·when·the·current·process·retrieves·the·reply·from |
| 172 | the·<code·class="inline">application_controller</code>·process.</li></ul><p>The·<a·href="#c/4"><code·class="inline">dbg:c/4</code></a>·function·has·a·fourth·argument·for·specifying·the·trace·flags. | 172 | the·<code·class="inline">application_controller</code>·process.</li></ul><p>The·<a·href="#c/4"><code·class="inline">dbg:c/4</code></a>·function·has·a·fourth·argument·for·specifying·the·trace·flags. |
| 173 | Here·is·how·to·only·show·message·sending·and·receiving:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">c</span><span·class="p"·data-group-id=" | 173 | Here·is·how·to·only·show·message·sending·and·receiving:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">c</span><span·class="p"·data-group-id="0810241678-1">(</span><span·class="ss">application</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">which_applications</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0810241678-2">[</span><span·cl[·...·truncated·by·diffoscope;·len:·159,·SHA:·f6a39323c2faddd8988a454387a4931b57a94787cb92532af6a4271360c37d7a·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 174 | </span><span·class="p"·data-group-id=" | 174 | </span><span·class="p"·data-group-id="0810241678-3">(</span><span·class="o"><</span><span·class="mf">0.96</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="0810241678-3">)</span><span·class="w">·</span><span·class="o"><</span[·...·truncated·by·diffoscope;·len:·338,·SHA:·eabef4534e8c9d37d78f3b56b5c0a52dadc0c53fe50e76716dc34dc78b8def3f·...·]-5">{</span><span·class="o"><</span><span·class="mf">0.96</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="w"> |
| 175 | ····································</span><span·class="p"·data-group-id=" | 175 | ····································</span><span·class="p"·data-group-id="0810241678-6">[</span><span·class="ss">alias</span><span·class="p">|</span><span·class="w"> |
| 176 | ·····································</span><span·class="p">#</span><span·class="n">Ref</span><span·class="o"><</span><span·class="mf">0.0</span><span·class="p">.</span><span·class="mf">12291.270031856</span><span·class="p">.</span><span·class="mf">1478295555.230496</span><span·class="o">></span><span·class="p"·data-group-id=" | 176 | ·····································</span><span·class="p">#</span><span·class="n">Ref</span><span·class="o"><</span><span·class="mf">0.0</span><span·class="p">.</span><span·class="mf">12291.270031856</span><span·class="p">.</span><span·class="mf">1478295555.230496</span><span·class="o">></span><span·class="p"·data-group-id="0810241678-6">]</span><span·class="p"·data-group-id="0810241678-5">}</span><span·class="p">,</span><span·class="w"> |
| 177 | ···································</span><span·class="ss">which_applications</span><span·class="p"·data-group-id=" | 177 | ···································</span><span·class="ss">which_applications</span><span·class="p"·data-group-id="0810241678-4">}</span><span·class="w"> |
| 178 | </span><span·class="p"·data-group-id=" | 178 | </span><span·class="p"·data-group-id="0810241678-7">(</span><span·class="o"><</span><span·class="mf">0.96</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="0810241678-7">)</span><span·class="w">·</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·518,·SHA:·d0ca99b4fe5e50f1ca0440d17a567e636e11f470555a8a99f380189a405ef315·...·]-10">]</span><span·class="p">,</span><span·class="w"> |
| 179 | ···············</span><span·class="p"·data-group-id=" | 179 | ···············</span><span·class="p"·data-group-id="0810241678-11">[</span><span·class="p"·data-group-id="0810241678-12">{</span><span·class="ss">stdlib</span><span·class="p">,</span><span·class="s">"ERTS··CXC·138·10"</span><span·class="p">,</span><span·class="s">"5.2.1"</span><span·clas[·...·truncated·by·diffoscope;·len:·31,·SHA:·1b3a226609fcd8249184b4d38aaf498407051476b4e20f8faff12b7baceab369·...·]-12">}</span><span·class="p">,</span><span·class="w"> |
| 180 | ················</span><span·class="p"·data-group-id=" | 180 | ················</span><span·class="p"·data-group-id="0810241678-13">{</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="s">"ERTS··CXC·138·10"</span><span·class="p">,</span><span·class="s">"9.2.2"</span><span·class="p"·data-group-id="0810241678-13">}</span><span·clas[·...·truncated·by·diffoscope;·len:·85,·SHA:·3437a7a7c425f5411351779a00e7b6b7bb095af555bb92ede4c7391e48670be9·...·]-9">}</span><span·class="w"> |
| 181 | </span><span·class="p"·data-group-id=" | 181 | </span><span·class="p"·data-group-id="0810241678-14">[</span><span·class="p"·data-group-id="0810241678-15">{</span><span·class="ss">stdlib</span><span·class="p">,</span><span·class="s">"ERTS··CXC·138·10"</span><span·class="p">,</span><span·class="s">"5.2.1"</span><span·clas[·...·truncated·by·diffoscope;·len:·31,·SHA:·1b3a226609fcd8249184b4d38aaf498407051476b4e20f8faff12b7baceab369·...·]-15">}</span><span·class="p">,</span><span·class="w"> |
| 182 | ·</span><span·class="p"·data-group-id=" | 182 | ·</span><span·class="p"·data-group-id="0810241678-16">{</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="s">"ERTS··CXC·138·10"</span><span·class="p">,</span><span·class="s">"9.2.2"</span><span·class="p"·data-group-id="0810241678-16">}</span><span·clas[·...·truncated·by·diffoscope;·len:·31,·SHA:·1b3a226609fcd8249184b4d38aaf498407051476b4e20f8faff12b7baceab369·...·]-14">]</span></code></pre><h2·id="module-tracing-from-the-shell"·class="section-heading"> |
| 183 | ··<a·href="#module-tracing-from-the-shell"·class="hover-link"> | 183 | ··<a·href="#module-tracing-from-the-shell"·class="hover-link"> |
| 184 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 184 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 185 | ··</a> | 185 | ··</a> |
| 186 | ··<span·class="text">Tracing·from·the·shell</span> | 186 | ··<span·class="text">Tracing·from·the·shell</span> |
| 187 | </h2> | 187 | </h2> |
| 188 | <p>Another·way·of·tracing·from·the·shell·is·to·explicitly·start·a·<em>tracer</em>·and | 188 | <p>Another·way·of·tracing·from·the·shell·is·to·explicitly·start·a·<em>tracer</em>·and |
| 189 | set·the·<em>trace·flags</em>·of·your·choice·on·the·processes·you·want·to·trace. | 189 | set·the·<em>trace·flags</em>·of·your·choice·on·the·processes·you·want·to·trace. |
| 190 | For·example,·here·is·how·to·trace·messages·and·process·events:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">Pid</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">spawn</span><span·class="p"·data-group-id=" | 190 | For·example,·here·is·how·to·trace·messages·and·process·events:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">Pid</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">spawn</span><span·class="p"·data-group-id="1915800197-1">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="1915800197-2">(</span><span·class="p"·data-group-id="1915800197-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="k">receive</[·...·truncated·by·diffoscope;·len:·554,·SHA:·b5140d14c13827efb90bf2379ba6784512badcca6c3b3a584853a9bfd3411235·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 191 | </span><span·class="o"><</span><span·class="mf">0.90</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="gp·unselectable"> | 191 | </span><span·class="o"><</span><span·class="mf">0.90</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="gp·unselectable"> |
| 192 | 2>·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">tracer</span><span·class="p"·data-group-id=" | 192 | 2>·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">tracer</span><span·class="p"·data-group-id="1915800197-4">(</span><span·class="p"·data-group-id="1915800197-4">)</span><span·class="p">.</span><span·class="w"> |
| 193 | </span><span·class="p"·data-group-id=" | 193 | </span><span·class="p"·data-group-id="1915800197-5">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.92</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="1915800197-5">}</span><span·class="gp·unselectable"> |
| 194 | 3>·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">p</span><span·class="p"·data-group-id=" | 194 | 3>·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">p</span><span·class="p"·data-group-id="1915800197-6">(</span><span·class="n">Pid</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1915800197-7">[</span><span·class="ss">m</span><span·class="p">,</span><span·class="ss">procs</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·65,·SHA:·8430ecab12154da03f62a574cc75246432ac128490bb303460b792326434bef7·...·]-6">)</span><span·class="p">.</span><span·class="w"> |
| 195 | </span><span·class="p"·data-group-id=" | 195 | </span><span·class="p"·data-group-id="1915800197-8">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="1915800197-9">[</span><span·class="p"·data-group-id="1915800197-10">{</span><span·class="ss">matched</span><span·class="p">,</span><span·class="ss">nonod[·...·truncated·by·diffoscope;·len:·212,·SHA:·5afca6b463237638b963b37626456ca41046f08e6293d47221e0d3bc58ce8155·...·]-8">}</span><span·class="gp·unselectable"> |
| 196 | 4>·</span><span·class="n">Pid</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 196 | 4>·</span><span·class="n">Pid</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="1915800197-11">{</span><span·class="nf">self</span><span·class="p"·data-group-id="1915800197-12">(</span><span·class="p"·data-group-id="1915800197-12">)</span><span·class="p">,</span><span·class="ss">hello</span><span·class="p"·data-group-id="1915800197-11">}</span><span·class="p">.</span><span·class="w"> |
| 197 | </span><span·class="p"·data-group-id=" | 197 | </span><span·class="p"·data-group-id="1915800197-13">(</span><span·class="o"><</span><span·class="mf">0.90</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="1915800197-13">)</span><span·class="w">·</span><span·class="p"·data-gro[·...·truncated·by·diffoscope;·len:·340,·SHA:·3693b6f5190efd42864180f2ced212d9c40060d5e869656adfe0c17dbd628ccc·...·]-15">}</span><span·class="w"> |
| 198 | </span><span·class="p"·data-group-id=" | 198 | </span><span·class="p"·data-group-id="1915800197-16">{</span><span·class="o"><</span><span·class="mf">0.88</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="ss">hello</span><span·class="p"·data-group-id="1915800197-16">}</span><span·class="w"> |
| 199 | </span><span·class="p"·data-group-id=" | 199 | </span><span·class="p"·data-group-id="1915800197-17">(</span><span·class="o"><</span><span·class="mf">0.90</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="1915800197-17">)</span><span·class="w">·</span><span·class="o"><</span><span·class="mf">0.88</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="nf">hello</span><span·class="w"> |
| 200 | </span><span·class="p"·data-group-id=" | 200 | </span><span·class="p"·data-group-id="1915800197-18">(</span><span·class="o"><</span><span·class="mf">0.90</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="1915800197-18">)</span><span·class="w">·</span><span·class="nb">exit</span><span·class="w">·</span><span·class="ss">normal</span><span·class="gp·unselectable"> |
| 201 | 5>·</span><span·class="nf">flush</span><span·class="p"·data-group-id=" | 201 | 5>·</span><span·class="nf">flush</span><span·class="p"·data-group-id="1915800197-19">(</span><span·class="p"·data-group-id="1915800197-19">)</span><span·class="p">.</span><span·class="w"> |
| 202 | </span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="ss">hello</span><span·class="w"> | 202 | </span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="ss">hello</span><span·class="w"> |
| 203 | </span><span·class="ss">ok</span></code></pre><p>In·order·to·trace·functions·call,·in·addition·to·enabling·the·<code·class="inline">call</code>·trace·flag | 203 | </span><span·class="ss">ok</span></code></pre><p>In·order·to·trace·functions·call,·in·addition·to·enabling·the·<code·class="inline">call</code>·trace·flag |
| 204 | for·the·process,·it·is·also·necessary·to·set·a·<em>trace·pattern</em>·for·the·functions | 204 | for·the·process,·it·is·also·necessary·to·set·a·<em>trace·pattern</em>·for·the·functions |
| 205 | to·trace.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">tracer</span><span·class="p"·data-group-id=" | 205 | to·trace.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">tracer</span><span·class="p"·data-group-id="9582058072-1">(</span><span·class="p"·data-group-id="9582058072-1">)</span><span·class="p">.</span><span·class="w"> |
| 206 | </span><span·class="p"·data-group-id=" | 206 | </span><span·class="p"·data-group-id="9582058072-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.90</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="9582058072-2">}</span><span·class="gp·unselectable"> |
| 207 | 2>·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">p</span><span·class="p"·data-group-id=" | 207 | 2>·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">p</span><span·class="p"·data-group-id="9582058072-3">(</span><span·class="ss">all</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">call</span><span·class="p"·data-group-id="9582058072-3">)</span><span·class="p">.</span><span·class="w"> |
| 208 | </span><span·class="p"·data-group-id=" | 208 | </span><span·class="p"·data-group-id="9582058072-4">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="9582058072-5">[</span><span·class="p"·data-group-id="9582058072-6">{</span><span·class="ss">matched</span><span·class="p">,</span><span·class="ss">nonode[·...·truncated·by·diffoscope;·len:·211,·SHA:·48d940be56fc9d93bcd1ef4bc94f3ce4153a3dbf20b278a6c6569e97448788bb·...·]-4">}</span><span·class="gp·unselectable"> |
| 209 | 3>·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">tp</span><span·class="p"·data-group-id=" | 209 | 3>·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">tp</span><span·class="p"·data-group-id="9582058072-7">(</span><span·class="ss">lists</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">last</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·cl[·...·truncated·by·diffoscope;·len:·139,·SHA:·0771b0d86c055f6ab00026c1dbbea4c6ff4fac714f85b72225590a23b0191da9·...·]-7">)</span><span·class="p">.</span><span·class="w"> |
| 210 | </span><span·class="p"·data-group-id=" | 210 | </span><span·class="p"·data-group-id="9582058072-9">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="9582058072-10">[</span><span·class="p"·data-group-id="9582058072-11">{</span><span·class="ss">matched</span><span·class="p">,</span><span·class="ss">nono[·...·truncated·by·diffoscope;·len:·214,·SHA:·9fdb0a886116d46ea68b126e3a2348dcf1c8386cc3c2a6a4f305409f0675d6d4·...·]-9">}</span><span·class="gp·unselectable"> |
| 211 | 4>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">last</span><span·class="p"·data-group-id=" | 211 | 4>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">last</span><span·class="p"·data-group-id="9582058072-12">(</span><span·class="p"·data-group-id="9582058072-13">[</span><span·class="ss">a</span><span·class="p">,</span><span·class="ss">b</span><span·class="p">,</span><span·class="ss">c</span><span·class="p">,</span><span·class="ss">d</span><span·c[·...·truncated·by·diffoscope;·len:·137,·SHA:·92373990023419de18bcfaa1c50feee7bc896c72e2597bbd89e1014568ff385e·...·]-12">)</span><span·class="p">.</span><span·class="w"> |
| 212 | </span><span·class="p"·data-group-id=" | 212 | </span><span·class="p"·data-group-id="9582058072-14">(</span><span·class="o"><</span><span·class="mf">0.88</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="9582058072-14">)</span><span·class="w">·</span><span·class="ss">call</s[·...·truncated·by·diffoscope;·len:·533,·SHA:·cc05fa0742c51b2eb58dd515a452eea252db35316421605d25159631d38f2ea9·...·]-15">)</span><span·class="w"> |
| 213 | </span><span·class="ss">e</span><span·class="gp·unselectable"> | 213 | </span><span·class="ss">e</span><span·class="gp·unselectable"> |
| 214 | 5>·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">tp</span><span·class="p"·data-group-id="6971819453-17">(</span><span·class="ss">lists</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">last</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6971819453-18">[</span><span·class="p"·data-group-id="6971819453-19">{</span><span·class="ss">'_'</span><span·class="p">,</span><span·class="p"·data-group-id="6971819453-20">[</span><span·class="p"·data-group-id="6971819453-20">]</span><span·class="p">,</span><span·class="p"·data-group-id="6971819453-21">[</span><span·class="p"·data-group-id="6971819453-22">{</span><span·class="ss">return_trace</span><span·class="p"·data-group-id="6971819453-22">}</span><span·class="p"·data-group-id="6971819453-21">]</span><span·class="p"·data-group-id="6971819453-19">}</span><span·class="p"·data-group-id="6971819453-18">]</span><span·class="p"·data-group-id="6971819453-17">)</span><span·class="p">.</span><span·class="w"> | ||
| 215 | </span><span·class=" | 214 | 5>·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">tp</span><span·class="p"·data-group-id="9582058072-17">(</span><span·class="ss">lists</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">last</span><span·c[·...·truncated·by·diffoscope;·len:·865,·SHA:·683a4fea9b9169756f6022f4cb8f9c7e2ac4f6111d58a7b37a8b332ec9170830·...·]"> |
| 215 | </span><span·class="p"·data-group-id="9582058072-23">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="9582058072-24">[</span><span·class="p"·data-group-id="9582058072-25">{</span><span·class="ss">matched</span><span·class="p">,</span><span·class="ss">nonode@nohost</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="9582058072-25">}</span><span·class="p">,</span><span·class="p"·data-group-id="9582058072-26">{</span><span·class="ss">saved</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="9582058072-26">}</span><span·class="p"·data-group-id="9582058072-24">]</span><span·class="p"·data-group-id="9582058072-23">}</span><span·class="gp·unselectable"> | ||
| 216 | 6>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">last</span><span·class="p"·data-group-id=" | 216 | 6>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">last</span><span·class="p"·data-group-id="9582058072-27">(</span><span·class="p"·data-group-id="9582058072-28">[</span><span·class="ss">a</span><span·class="p">,</span><span·class="ss">b</span><span·class="p">,</span><span·class="ss">c</span><span·class="p">,</span><span·class="ss">d</span><span·c[·...·truncated·by·diffoscope;·len:·137,·SHA:·97ea4314b2fdb1a911ec835dccf3e3eacd9b1ed4f3984dfc65496cec4df6afa7·...·]-27">)</span><span·class="p">.</span><span·class="w"> |
| 217 | </span><span·class="p"·data-group-id=" | 217 | </span><span·class="p"·data-group-id="9582058072-29">(</span><span·class="o"><</span><span·class="mf">0.88</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="9582058072-29">)</span><span·class="w">·</span><span·class="ss">call</s[·...·truncated·by·diffoscope;·len:·533,·SHA:·d8d8c6e6e8e7617bbe08c68accf0e550b34913e7d8a4e0614ae9be834110509d·...·]-30">)</span><span·class="w"> |
| 218 | </span><span·class="p"·data-group-id=" | 218 | </span><span·class="p"·data-group-id="9582058072-32">(</span><span·class="o"><</span><span·class="mf">0.88</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="9582058072-32">)</span><span·class="w">·</span><span·class="ss">returned</span><span·class="w">·</span><span·class="ss">from</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="ss">last</span><span·class="p">/</span><span·class="mi">1</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">e</span><span·class="w"> |
| 219 | </span><span·class="ss">e</span></code></pre><p><a·href=""·id="advanced"></a></p><h2·id="module-advanced-topics-combining-with-seq_trace"·class="section-heading"> | 219 | </span><span·class="ss">e</span></code></pre><p><a·href=""·id="advanced"></a></p><h2·id="module-advanced-topics-combining-with-seq_trace"·class="section-heading"> |
| 220 | ··<a·href="#module-advanced-topics-combining-with-seq_trace"·class="hover-link"> | 220 | ··<a·href="#module-advanced-topics-combining-with-seq_trace"·class="hover-link"> |
| 221 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 221 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 222 | ··</a> | 222 | ··</a> |
| 223 | ··<span·class="text">Advanced·topics·-·combining·with·seq_trace</span> | 223 | ··<span·class="text">Advanced·topics·-·combining·with·seq_trace</span> |
| 224 | </h2> | 224 | </h2> |
| 225 | <p>The·<code·class="inline">dbg</code>·module·is·primarily·targeted·towards·tracing·through·the | 225 | <p>The·<code·class="inline">dbg</code>·module·is·primarily·targeted·towards·tracing·through·the |
| 226 | <a·href="../../../../lib/kernel-10.2.3/doc/html/trace.html#process/4"><code·class="inline">trace:process/4</code></a>·function.·It·is·sometimes·desired·to·trace·messages·in·a·more | 226 | <a·href="../../../../lib/kernel-10.2.3/doc/html/trace.html#process/4"><code·class="inline">trace:process/4</code></a>·function.·It·is·sometimes·desired·to·trace·messages·in·a·more |
| 227 | delicate·way,·which·can·be·done·with·the·help·of·the·<a·href="../../../../lib/kernel-10.2.3/doc/html/seq_trace.html"><code·class="inline">seq_trace</code></a>·module.</p><p><a·href="../../../../lib/kernel-10.2.3/doc/html/seq_trace.html"><code·class="inline">seq_trace</code></a>·implements·sequential·tracing·(known·in·the·AXE10·world,·and | 227 | delicate·way,·which·can·be·done·with·the·help·of·the·<a·href="../../../../lib/kernel-10.2.3/doc/html/seq_trace.html"><code·class="inline">seq_trace</code></a>·module.</p><p><a·href="../../../../lib/kernel-10.2.3/doc/html/seq_trace.html"><code·class="inline">seq_trace</code></a>·implements·sequential·tracing·(known·in·the·AXE10·world,·and |
| 228 | sometimes·called·"forlopp·tracing").·<code·class="inline">dbg</code>·can·interpret·messages·generated·from | 228 | sometimes·called·"forlopp·tracing").·<code·class="inline">dbg</code>·can·interpret·messages·generated·from |
| 229 | <code·class="inline">seq_trace</code>·and·the·same·tracer·function·for·both·types·of·tracing·can·be·used. | 229 | <code·class="inline">seq_trace</code>·and·the·same·tracer·function·for·both·types·of·tracing·can·be·used. |
| 230 | The·<code·class="inline">seq_trace</code>·messages·can·also·be·sent·to·a·trace·port·for·further·analysis.</p><p>As·a·match·specification·can·turn·on·sequential·tracing,·the·combination·of | 230 | The·<code·class="inline">seq_trace</code>·messages·can·also·be·sent·to·a·trace·port·for·further·analysis.</p><p>As·a·match·specification·can·turn·on·sequential·tracing,·the·combination·of |
| 231 | <code·class="inline">dbg</code>·and·<code·class="inline">seq_trace</code>·can·be·powerful.·This·brief·example·shows·a·session | 231 | <code·class="inline">dbg</code>·and·<code·class="inline">seq_trace</code>·can·be·powerful.·This·brief·example·shows·a·session |
| 232 | where·sequential·tracing·is·used·to·trace·the·<code·class="inline">dbg</code>·module·and·the·trace·itself:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">tracer</span><span·class="p"·data-group-id=" | 232 | where·sequential·tracing·is·used·to·trace·the·<code·class="inline">dbg</code>·module·and·the·trace·itself:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">tracer</span><span·class="p"·data-group-id="8413838566-1">(</span><span·class="p"·data-group-id="8413838566-1">)</span><span·class="p">.</span><span·class="w"> |
| 233 | </span><span·class="p"·data-group-id=" | 233 | </span><span·class="p"·data-group-id="8413838566-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.30</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="8413838566-2">}</span><span·class="gp·unselectable"> |
| 234 | 2>·</span><span·class="p"·data-group-id=" | 234 | 2>·</span><span·class="p"·data-group-id="8413838566-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tracer</span><span·class="p"·data-group-id="8413838566-3">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·[·...·truncated·by·diffoscope;·len:·173,·SHA:·0188bb43a3f30f016280b535d7682a01d4f2704461fba7fcb17bcfb9ae3ebd10·...·]-4">)</span><span·class="p">.</span><span·class="w"> |
| 235 | </span><span·class="p"·data-group-id=" | 235 | </span><span·class="p"·data-group-id="8413838566-5">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.31</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="8413838566-5">}</span><span·class="gp·unselectable"> |
| 236 | 3>·</span><span·class="nc">seq_trace</span><span·class="p">:</span><span·class="nf">set_system_tracer</span><span·class="p"·data-group-id=" | 236 | 3>·</span><span·class="nc">seq_trace</span><span·class="p">:</span><span·class="nf">set_system_tracer</span><span·class="p"·data-group-id="8413838566-6">(</span><span·class="n">Tracer</span><span·class="p"·data-group-id="8413838566-6">)</span><span·class="p">.</span><span·class="w"> |
| 237 | </span><span·class="ss">false</span><span·class="gp·unselectable"> | 237 | </span><span·class="ss">false</span><span·class="gp·unselectable"> |
| 238 | 4>·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">tp</span><span·class="p"·data-group-id=" | 238 | 4>·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">tp</span><span·class="p"·data-group-id="8413838566-7">(</span><span·class="ss">dbg</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">get_tracer</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><spa[·...·truncated·by·diffoscope;·len:·918,·SHA:·8533140355f411fee7dfbdcb060faf0137fe63cc985f30dec3fdd7c610d3d451·...·]-7">)</span><span·class="p">.</span><span·class="w"> |
| 239 | </span><span·class="p"·data-group-id=" | 239 | </span><span·class="p"·data-group-id="8413838566-14">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="8413838566-15">[</span><span·class="p"·data-group-id="8413838566-16">{</span><span·class="ss">matched</span><span·class="p">,</span><span·class="ss">non[·...·truncated·by·diffoscope;·len:·425,·SHA:·e08b3f87a493e70f2a2e5e524106ab9047d654c5591c3663138dc44ec880797b·...·]-14">}</span><span·class="gp·unselectable"> |
| 240 | 5>·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">p</span><span·class="p"·data-group-id=" | 240 | 5>·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">p</span><span·class="p"·data-group-id="8413838566-18">(</span><span·class="ss">all</span><span·class="p">,</span><span·class="ss">call</span><span·class="p"·data-group-id="8413838566-18">)</span><span·class="p">.</span><span·class="w"> |
| 241 | </span><span·class="p"·data-group-id=" | 241 | </span><span·class="p"·data-group-id="8413838566-19">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="8413838566-20">[</span><span·class="p"·data-group-id="8413838566-21">{</span><span·class="ss">matched</span><span·class="p">,</span><span·class="ss">non[·...·truncated·by·diffoscope;·len:·216,·SHA:·cf052d6ee0a1f72b5d5c8b1d2945b4729322ed05ec9e55206618faf4a3a85134·...·]-19">}</span><span·class="gp·unselectable"> |
| 242 | 6>·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">get_tracer</span><span·class="p"·data-group-id=" | 242 | 6>·</span><span·class="nc">dbg</span><span·class="p">:</span><span·class="nf">get_tracer</span><span·class="p"·data-group-id="8413838566-22">(</span><span·class="p"·data-group-id="8413838566-22">)</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">seq_trace</span><span·class="p">:</span><span·class="nf">set_token</span><span·class="p"·data-group-id="8413838566[·...·truncated·by·diffoscope;·len:·162,·SHA:·09a252cf6420a5d074a6755252b46647c34b81a81824bbe7c15e6eeb90b21981·...·]-23">)</span><span·class="p">.</span><span·class="w"> |
| 243 | </span><span·class="p"·data-group-id=" | 243 | </span><span·class="p"·data-group-id="8413838566-25">(</span><span·class="o"><</span><span·class="mf">0.25</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="8413838566-25">)</span><span·class="w">·</span><span·class="ss">call</s[·...·truncated·by·diffoscope;·len:·208,·SHA:·d4cf38345db6985710b4fabed9e0642bf9390c86d78e854705291e00d6f7c65d·...·]-26">)</span><span·class="w"> |
| 244 | </span><span·class="n">SeqTrace</span><span·class="w">·</span><span·class="p"·data-group-id=" | 244 | </span><span·class="n">SeqTrace</span><span·class="w">·</span><span·class="p"·data-group-id="8413838566-27">[</span><span·class="mi">0</span><span·class="p"·data-group-id="8413838566-27">]</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="8413838566-28">(</span><span·class="o"><</span><span·class="mf">0.25</sp[·...·truncated·by·diffoscope;·len:·1035,·SHA:·97f7ab07bb5097145ad4ab0e1547e51a2389ef76f86249ddd0b6313711aaee56·...·]-30">]</span><span·class="w"> |
| 245 | </span><span·class="n">SeqTrace</span><span·class="w">·</span><span·class="p"·data-group-id=" | 245 | </span><span·class="n">SeqTrace</span><span·class="w">·</span><span·class="p"·data-group-id="8413838566-32">[</span><span·class="mi">0</span><span·class="p"·data-group-id="8413838566-32">]</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="8413838566-33">(</span><span·class="o"><</span><span·class="mf">0.30</sp[·...·truncated·by·diffoscope;·len:·1186,·SHA:·a3f2962afcc7f5824382922cc29df8bbc10edf483c92937a843be1da82e152d9·...·]-36">]</span><span·class="w"> |
| 246 | </span><span·class="p"·data-group-id=" | 246 | </span><span·class="p"·data-group-id="8413838566-38">{</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">5</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.30</span><span·class="p">.</span><span·c[·...·truncated·by·diffoscope;·len:·135,·SHA:·9299853ebe03e092dbd1eb59d0a9b95fd23cfc59591a08a2be72354cc911f6b8·...·]-38">}</span></code></pre><p>This·session·sets·the·system_tracer·to·the·same·process·as·the |
| 247 | ordinary·tracer·process·(i.·e.·<0.31.0>)·and·sets·the·trace·pattern | 247 | ordinary·tracer·process·(i.·e.·<0.31.0>)·and·sets·the·trace·pattern |
| 248 | for·the·function·<code·class="inline">dbg:get_tracer</code>·to·one·that·has·the·action·of | 248 | for·the·function·<code·class="inline">dbg:get_tracer</code>·to·one·that·has·the·action·of |
| 249 | setting·a·sequential·token.·When·the·function·is·called·by·a·traced | 249 | setting·a·sequential·token.·When·the·function·is·called·by·a·traced |
| 250 | process·(all·processes·are·traced·in·this·case),·the·process·gets | 250 | process·(all·processes·are·traced·in·this·case),·the·process·gets |
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| Offset 825, 22 lines modified | Offset 825, 22 lines modified | ||
| 825 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·restore_tag(true·|·{<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0">non_neg_integer</a>(),·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>()·|·[]})·->·true.</pre> | 825 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·restore_tag(true·|·{<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0">non_neg_integer</a>(),·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>()·|·[]})·->·true.</pre> |
| 826 | ······</div> | 826 | ······</div> |
| 827 | <p>Restores·the·previous·state·of·user·tags·and·their·spreading·as·it·was·before·a | 827 | <p>Restores·the·previous·state·of·user·tags·and·their·spreading·as·it·was·before·a |
| 828 | call·to·<a·href="#spread_tag/1"><code·class="inline">spread_tag/1</code></a>.</p><p>Note·that·the·restoring·is·not·limited·to·the·same·process;·one·can | 828 | call·to·<a·href="#spread_tag/1"><code·class="inline">spread_tag/1</code></a>.</p><p>Note·that·the·restoring·is·not·limited·to·the·same·process;·one·can |
| 829 | utilize·this·to·turn·off·spreding·in·one·process·and·restore·it·in·a | 829 | utilize·this·to·turn·off·spreding·in·one·process·and·restore·it·in·a |
| 830 | newly·created·process·that·is·is·actually·going·to·send·messages:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">f</span><span·class="p"·data-group-id=" | 830 | newly·created·process·that·is·is·actually·going·to·send·messages:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">f</span><span·class="p"·data-group-id="8632004616-1">(</span><span·class="p"·data-group-id="8632004616-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 831 | ····</span><span·class="n">TagData</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">dyntrace</span><span·class="p">:</span><span·class="nf">spread_tag</span><span·class="p"·data-group-id=" | 831 | ····</span><span·class="n">TagData</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">dyntrace</span><span·class="p">:</span><span·class="nf">spread_tag</span><span·class="p"·data-group-id="8632004616-2">(</span><span·class="ss">false</span><span·class="p"·data-group-id="8632004616-2">)</span><span·class="p">,</span><span·class="w"> |
| 832 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id=" | 832 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id="8632004616-3">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="8632004616-4">(</span><span·class="p"·data-group-id="8632004616-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 833 | ·············</span><span·class="nc">dyntrace</span><span·class="p">:</span><span·class="nf">restore_tag</span><span·class="p"·data-group-id=" | 833 | ·············</span><span·class="nc">dyntrace</span><span·class="p">:</span><span·class="nf">restore_tag</span><span·class="p"·data-group-id="8632004616-5">(</span><span·class="n">TagData</span><span·class="p"·data-group-id="8632004616-5">)</span><span·class="p">,</span><span·class="w"> |
| 834 | ·············</span><span·class="nf">do_something</span><span·class="p"·data-group-id=" | 834 | ·············</span><span·class="nf">do_something</span><span·class="p"·data-group-id="8632004616-6">(</span><span·class="p"·data-group-id="8632004616-6">)</span><span·class="w"> |
| 835 | ··········</span><span·class="k">end</span><span·class="p"·data-group-id=" | 835 | ··········</span><span·class="k">end</span><span·class="p"·data-group-id="8632004616-3">)</span><span·class="p">,</span><span·class="w"> |
| 836 | ····</span><span·class="nf">do_something_else</span><span·class="p"·data-group-id=" | 836 | ····</span><span·class="nf">do_something_else</span><span·class="p"·data-group-id="8632004616-7">(</span><span·class="p"·data-group-id="8632004616-7">)</span><span·class="p">,</span><span·class="w"> |
| 837 | ····</span><span·class="nc">dyntrace</span><span·class="p">:</span><span·class="nf">restore_tag</span><span·class="p"·data-group-id=" | 837 | ····</span><span·class="nc">dyntrace</span><span·class="p">:</span><span·class="nf">restore_tag</span><span·class="p"·data-group-id="8632004616-8">(</span><span·class="n">TagData</span><span·class="p"·data-group-id="8632004616-8">)</span><span·class="p">.</span></code></pre><p>Correctly·handling·user·tags·and·their·spreading·might·take·some·effort,·as |
| 838 | Erlang·programs·tend·to·send·and·receive·messages·so·that·sometimes·the·user·tag | 838 | Erlang·programs·tend·to·send·and·receive·messages·so·that·sometimes·the·user·tag |
| 839 | gets·lost·due·to·various·things,·like·double·receives·or·communication·with·a | 839 | gets·lost·due·to·various·things,·like·double·receives·or·communication·with·a |
| 840 | port·(ports·do·not·handle·user·tags,·in·the·same·way·as·they·do·not·handle | 840 | port·(ports·do·not·handle·user·tags,·in·the·same·way·as·they·do·not·handle |
| 841 | regular·sequential·trace·tokens).</p> | 841 | regular·sequential·trace·tokens).</p> |
| 842 | ··</section> | 842 | ··</section> |
| 843 | </section> | 843 | </section> |
| 844 | <section·class="detail"·id="spread_tag/1"> | 844 | <section·class="detail"·id="spread_tag/1"> |
| Offset 877, 20 lines modified | Offset 877, 20 lines modified | ||
| 877 | <a·href="#restore_tag/1"><code·class="inline">restore_tag/1</code></a>,·one·can·enable·or·disable·spreading·of·user | 877 | <a·href="#restore_tag/1"><code·class="inline">restore_tag/1</code></a>,·one·can·enable·or·disable·spreading·of·user |
| 878 | tags·to·other·processes·and·then·restore·the·previous·state·of·the·user·tag.·The | 878 | tags·to·other·processes·and·then·restore·the·previous·state·of·the·user·tag.·The |
| 879 | TagData·returned·from·this·call·contains·all·previous·information·so·the·state | 879 | TagData·returned·from·this·call·contains·all·previous·information·so·the·state |
| 880 | (including·any·previously·spread·user·tags)·will·be·completely·restored·by·a | 880 | (including·any·previously·spread·user·tags)·will·be·completely·restored·by·a |
| 881 | later·call·to·<a·href="#restore_tag/1"><code·class="inline">restore_tag/1</code></a>.</p><p>The·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html"><code·class="inline">file</code></a>·module·already·spreads·tags,·so·there·is·no·need·to·manually·call | 881 | later·call·to·<a·href="#restore_tag/1"><code·class="inline">restore_tag/1</code></a>.</p><p>The·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html"><code·class="inline">file</code></a>·module·already·spreads·tags,·so·there·is·no·need·to·manually·call |
| 882 | this·function·to·get·user·tags·spread·to·the·<code·class="inline">efile</code>·driver·through·that·module.</p><p>The·most·use·of·this·function·would·be·if·one,·for·example,·uses·the·<a·href="../../../../lib/stdlib-6.2.1/doc/html/io.html"><code·class="inline">io</code></a>·module | 882 | this·function·to·get·user·tags·spread·to·the·<code·class="inline">efile</code>·driver·through·that·module.</p><p>The·most·use·of·this·function·would·be·if·one,·for·example,·uses·the·<a·href="../../../../lib/stdlib-6.2.1/doc/html/io.html"><code·class="inline">io</code></a>·module |
| 883 | to·communicate·with·an·I/O-server·for·a·regular·file,·such·as·in·the·following | 883 | to·communicate·with·an·I/O-server·for·a·regular·file,·such·as·in·the·following |
| 884 | example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">f</span><span·class="p"·data-group-id="8 | 884 | example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">f</span><span·class="p"·data-group-id="5802645890-1">(</span><span·class="p"·data-group-id="5802645890-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 885 | ···</span><span·class="p"·data-group-id="8 | 885 | ···</span><span·class="p"·data-group-id="5802645890-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">F</span><span·class="p"·data-group-id="5802645890-2">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class[·...·truncated·by·diffoscope;·len:·389,·SHA:·08593a286ad0ba20ede3390bf3d97532ee8d57a59ca4d1a0a5652675fb265f0d·...·]-3">)</span><span·class="p">,</span><span·class="w"> |
| 886 | ···</span><span·class="n">Saved</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">dyntrace</span><span·class="p">:</span><span·class="nf">spread_tag</span><span·class="p"·data-group-id="8 | 886 | ···</span><span·class="n">Saved</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">dyntrace</span><span·class="p">:</span><span·class="nf">spread_tag</span><span·class="p"·data-group-id="5802645890-5">(</span><span·class="ss">true</span><span·class="p"·data-group-id="5802645890-5">)</span><span·class="p">,</span><span·class="w"> |
| 887 | ···</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="8 | 887 | ···</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="5802645890-6">(</span><span·class="n">F</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"Hello·world!"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5802645890-7">[</span><span·class="p[·...·truncated·by·diffoscope;·len:·80,·SHA:·c67c6b091f9f7751e4f3efaf5dcee5b17c7a7d78e1290a6233c0c0dc61380c21·...·]-6">)</span><span·class="p">,</span><span·class="w"> |
| 888 | ···</span><span·class="nc">dyntrace</span><span·class="p">:</span><span·class="nf">restore_tag</span><span·class="p"·data-group-id="8 | 888 | ···</span><span·class="nc">dyntrace</span><span·class="p">:</span><span·class="nf">restore_tag</span><span·class="p"·data-group-id="5802645890-8">(</span><span·class="n">Saved</span><span·class="p"·data-group-id="5802645890-8">)</span><span·class="p">,</span><span·class="w"> |
| 889 | ···</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id="8 | 889 | ···</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id="5802645890-9">(</span><span·class="n">F</span><span·class="p"·data-group-id="5802645890-9">)</span><span·class="p">.</span></code></pre><p>In·this·example,·any·user·tag·set·in·the·calling·process·will·be·spread·to·the |
| 890 | I/O-server·when·the·<a·href="../../../../lib/stdlib-6.2.1/doc/html/io.html#format/3"><code·class="inline">io:format/3</code></a>·call·is·done.</p> | 890 | I/O-server·when·the·<a·href="../../../../lib/stdlib-6.2.1/doc/html/io.html#format/3"><code·class="inline">io:format/3</code></a>·call·is·done.</p> |
| 891 | ··</section> | 891 | ··</section> |
| 892 | </section> | 892 | </section> |
| 893 | ····</div> | 893 | ····</div> |
| 894 | ··</section> | 894 | ··</section> |
| Offset 345, 16 lines modified | Offset 345, 16 lines modified | ||
| 345 | ······</div> | 345 | ······</div> |
| 346 | <p>A·histogram·of·block·sizes·where·each·interval's·upper·bound·is·twice·as·high·as | 346 | <p>A·histogram·of·block·sizes·where·each·interval's·upper·bound·is·twice·as·high·as |
| 347 | the·one·before·it.</p><p>The·upper·bound·of·the·first·interval·is·provided·by·the·function·that·returned | 347 | the·one·before·it.</p><p>The·upper·bound·of·the·first·interval·is·provided·by·the·function·that·returned |
| 348 | the·histogram,·and·the·last·interval·has·no·upper·bound.</p><p>For·example,·the·histogram·below·has·40·(<code·class="inline">message</code>)·blocks·between·128-256·bytes | 348 | the·histogram,·and·the·last·interval·has·no·upper·bound.</p><p>For·example,·the·histogram·below·has·40·(<code·class="inline">message</code>)·blocks·between·128-256·bytes |
| 349 | in·size,·78·blocks·between·256-512·bytes,2·blocks·between·512-1024·bytes,·and·2 | 349 | in·size,·78·blocks·between·256-512·bytes,2·blocks·between·512-1024·bytes,·and·2 |
| 350 | blocks·between·1-2KB.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">instrument</span><span·class="p">:</span><span·class="nf">allocations</span><span·class="p"·data-group-id="5 | 350 | blocks·between·1-2KB.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">instrument</span><span·class="p">:</span><span·class="nf">allocations</span><span·class="p"·data-group-id="5316133149-1">(</span><span·class="p"·data-group-id="5316133149-2">#{</span><span·class="w">·</span><span·class="ss">histogram_start</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">128</span><span·class="p"[·...·truncated·by·diffoscope;·len:·292,·SHA:·484e68f2262efe344f75caf69e38ff261d97bdc5079f1190dbd14aa7fe37dff9·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 351 | </span><span·class="p"·data-group-id="5 | 351 | </span><span·class="p"·data-group-id="5316133149-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5316133149-4">{</span><span·class="mi">128</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">0</span><span·cl[·...·truncated·by·diffoscope;·len:·1359,·SHA:·a4c3caf907e34b265691e4890a47e4eff01a243c89b783924a0ef5f62eab354a·...·]-3">}</span></code></pre> |
| 352 | ··</section> | 352 | ··</section> |
| 353 | </section> | 353 | </section> |
| 354 | <section·class="detail"·id="t:carrier_info_list/0"> | 354 | <section·class="detail"·id="t:carrier_info_list/0"> |
| 355 | ··<div·class="detail-header"> | 355 | ··<div·class="detail-header"> |
| 356 | ····<a·href="#t:carrier_info_list/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·type"> | 356 | ····<a·href="#t:carrier_info_list/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·type"> |
| 357 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 357 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 480, 38 lines modified | Offset 480, 38 lines modified | ||
| 480 | to·an·allocator·of·a·different·type.</p><p>Defaults·to·all·<code·class="inline">alloc_util</code>·allocators.</p></li><li><p><strong><code·class="inline">scheduler_ids</code></strong>·-·The·scheduler·ids·whose·allocator·instances·will·be | 480 | to·an·allocator·of·a·different·type.</p><p>Defaults·to·all·<code·class="inline">alloc_util</code>·allocators.</p></li><li><p><strong><code·class="inline">scheduler_ids</code></strong>·-·The·scheduler·ids·whose·allocator·instances·will·be |
| 481 | searched.·A·scheduler·id·of·0·will·refer·to·the·global·instance·that·is·not | 481 | searched.·A·scheduler·id·of·0·will·refer·to·the·global·instance·that·is·not |
| 482 | tied·to·any·particular·scheduler.·Defaults·to·all·schedulers·and·the·global | 482 | tied·to·any·particular·scheduler.·Defaults·to·all·schedulers·and·the·global |
| 483 | instance.</p></li><li><p><strong><code·class="inline">histogram_start</code></strong>·-·The·upper·bound·of·the·first·interval·in·the·allocated | 483 | instance.</p></li><li><p><strong><code·class="inline">histogram_start</code></strong>·-·The·upper·bound·of·the·first·interval·in·the·allocated |
| 484 | block·size·histograms.·Defaults·to·128.</p></li><li><p><strong><code·class="inline">histogram_width</code></strong>·-·The·number·of·intervals·in·the·allocated·block·size | 484 | block·size·histograms.·Defaults·to·128.</p></li><li><p><strong><code·class="inline">histogram_width</code></strong>·-·The·number·of·intervals·in·the·allocated·block·size |
| 485 | histograms.·Defaults·to·18.</p></li><li><p><strong><code·class="inline">flags</code></strong>·-·Controls·how·to·group·the·output,·for·example·showing | 485 | histograms.·Defaults·to·18.</p></li><li><p><strong><code·class="inline">flags</code></strong>·-·Controls·how·to·group·the·output,·for·example·showing |
| 486 | allocations·on·a·per-process·basis·(when·possible)·rather·than·only·a | 486 | allocations·on·a·per-process·basis·(when·possible)·rather·than·only·a |
| 487 | NIF/driver-basis.·Defaults·to·<code·class="inline">[]</code>.</p></li></ul><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">instrument</span><span·class="p">:</span><span·class="nf">allocations</span><span·class="p"·data-group-id=" | 487 | NIF/driver-basis.·Defaults·to·<code·class="inline">[]</code>.</p></li></ul><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">instrument</span><span·class="p">:</span><span·class="nf">allocations</span><span·class="p"·data-group-id="7166410113-1">(</span><span·class="p"·data-group-id="7166410113-2">#{</span><span·class="w">·</span><span·class="ss">histogram_start</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">128</span><span·class="p[·...·truncated·by·diffoscope;·len:·293,·SHA:·f557185b3746cbdcd1af3c4476e91b85234dd77807dcf71e06e00b8d6e44ecbc·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 488 | </span><span·class="p"·data-group-id=" | 488 | </span><span·class="p"·data-group-id="7166410113-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="7166410113-4">{</span><span·class="mi">128</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="w"> |
| 489 | ·····</span><span·class="p"·data-group-id=" | 489 | ·····</span><span·class="p"·data-group-id="7166410113-5">#{</span><span·class="ss">udp_inet</span><span·class="w">·</span><span·class="p">=></span><span·class="w"> |
| 490 | ···········</span><span·class="p"·data-group-id=" | 490 | ···········</span><span·class="p"·data-group-id="7166410113-6">#{</span><span·class="ss">driver_event_state</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="7166410113-7">{</span><span·class="mi">0</span><span·class="p">,</span><span·class="[·...·truncated·by·diffoscope;·len:·743,·SHA:·351cb6b0f8bff8b126392c924377e20056f1e84ce741c2be518cfbab46279e15·...·]-6">}</span><span·class="p">,</span><span·class="w"> |
| 491 | ·······</span><span·class="ss">system</span><span·class="w">·</span><span·class="p">=></span><span·class="w"> | 491 | ·······</span><span·class="ss">system</span><span·class="w">·</span><span·class="p">=></span><span·class="w"> |
| 492 | ···········</span><span·class="p"·data-group-id=" | 492 | ···········</span><span·class="p"·data-group-id="7166410113-8">#{</span><span·class="ss">heap</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="7166410113-9">{</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><s[·...·truncated·by·diffoscope;·len:·677,·SHA:·1c36ed543e3014749d78d98af7d0eb9a162d8bbce830ed1954cb4c16bbe7e717·...·]-9">}</span><span·class="p">,</span><span·class="w"> |
| 493 | ·············</span><span·class="ss">db_term</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 493 | ·············</span><span·class="ss">db_term</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="7166410113-10">{</span><span·class="mi">271</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">52</span><span·class="p">,</span><span·class="mi">80</span><span·cl[·...·truncated·by·diffoscope;·len:·523,·SHA:·116943deb22f87f059189d129a6e5ea3e7e35d2d8ea2905aad028b6b0167991b·...·]-10">}</span><span·class="p">,</span><span·class="w"> |
| 494 | ·············</span><span·class="ss">code</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 494 | ·············</span><span·class="ss">code</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="7166410113-11">{</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">5</span><span·class="p">,</span><span·class="mi">3</span><span·class=[·...·truncated·by·diffoscope;·len:·524,·SHA:·ff03867ff688e319b5521b64a94384dcd7b04fb9d57a4074ddab95a90bf287cf·...·]-11">}</span><span·class="p">,</span><span·class="w"> |
| 495 | ·············</span><span·class="ss">binary</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 495 | ·············</span><span·class="ss">binary</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="7166410113-12">{</span><span·class="mi">18</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">7</span><span·class[·...·truncated·by·diffoscope;·len:·520,·SHA:·0be2260bbe21ba4fe6739faeb01bb346c5ff0262a878eeb42ec267806178a205·...·]-12">}</span><span·class="p">,</span><span·class="w"> |
| 496 | ·············</span><span·class="ss">message</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 496 | ·············</span><span·class="ss">message</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="7166410113-13">{</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">40</span><span·class="p">,</span><span·class="mi">78</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">2</span><span·clas[·...·truncated·by·diffoscope;·len:·521,·SHA:·e7128ae019099097561befdafca2a5300bf387501f3a1d19dd84629a9ca90a23·...·]-13">}</span><span·class="p">,</span><span·class="w"> |
| 497 | ·············</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="p"·data-group-id=" | 497 | ·············</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w">·</span><span·class="p"·data-group-id="7166410113-8">}</span><span·class="w"> |
| 498 | ·······</span><span·class="ss">spawn_forker</span><span·class="w">·</span><span·class="p">=></span><span·class="w"> | 498 | ·······</span><span·class="ss">spawn_forker</span><span·class="w">·</span><span·class="p">=></span><span·class="w"> |
| 499 | ···········</span><span·class="p"·data-group-id=" | 499 | ···········</span><span·class="p"·data-group-id="7166410113-14">#{</span><span·class="ss">driver_select_data_state</span><span·class="w">·</span><span·class="p">=></span><span·class="w"> |
| 500 | ·················</span><span·class="p"·data-group-id=" | 500 | ·················</span><span·class="p"·data-group-id="7166410113-15">{</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class=[·...·truncated·by·diffoscope;·len:·573,·SHA:·07103fef7acca417a6c989529072425826e62b351b2ada1ccc9751d171b5a257·...·]-14">}</span><span·class="p">,</span><span·class="w"> |
| 501 | ·······</span><span·class="ss">ram_file_drv</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 501 | ·······</span><span·class="ss">ram_file_drv</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="7166410113-16">#{</span><span·class="ss">drv_binary</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="7166410113-17">{</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0<[·...·truncated·by·diffoscope;·len:·738,·SHA:·ac331fb223edb5b2ea74df35ebc947e12f602d8ad1cb9b82480bdf9257dc9a22·...·]-16">}</span><span·class="p">,</span><span·class="w"> |
| 502 | ·······</span><span·class="ss">prim_file</span><span·class="w">·</span><span·class="p">=></span><span·class="w"> | 502 | ·······</span><span·class="ss">prim_file</span><span·class="w">·</span><span·class="p">=></span><span·class="w"> |
| 503 | ···········</span><span·class="p"·data-group-id=" | 503 | ···········</span><span·class="p"·data-group-id="7166410113-18">#{</span><span·class="ss">process_specific_data</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="7166410113-19">{</span><span·class="mi">2</span><span·class="p">,</span><span·cl[·...·truncated·by·diffoscope;·len:·695,·SHA:·0559f9debc81fcbdef5b63850131e878f95d6597ccfda2784876d09d1d9cc0b9·...·]-19">}</span><span·class="p">,</span><span·class="w"> |
| 504 | ·············</span><span·class="ss">nif_trap_export_entry</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 504 | ·············</span><span·class="ss">nif_trap_export_entry</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="7166410113-20">{</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class=[·...·truncated·by·diffoscope;·len:·519,·SHA:·f7622a567860b4e0e026930e9de3bf67e6f3a768576d6cb47ccaf16a6a3024b5·...·]-20">}</span><span·class="p">,</span><span·class="w"> |
| 505 | ·············</span><span·class="ss">monitor_extended</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 505 | ·············</span><span·class="ss">monitor_extended</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="7166410113-21">{</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class=[·...·truncated·by·diffoscope;·len:·519,·SHA:·f7622a567860b4e0e026930e9de3bf67e6f3a768576d6cb47ccaf16a6a3024b5·...·]-21">}</span><span·class="p">,</span><span·class="w"> |
| 506 | ·············</span><span·class="ss">drv_binary</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 506 | ·············</span><span·class="ss">drv_binary</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="7166410113-22">{</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class=[·...·truncated·by·diffoscope;·len:·519,·SHA:·dabefcb7898dc4a216c8464abefbe5cfff6161ff4de009d7db96dfe04e904df7·...·]-22">}</span><span·class="p">,</span><span·class="w"> |
| 507 | ·············</span><span·class="ss">binary</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 507 | ·············</span><span·class="ss">binary</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="7166410113-23">{</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class=[·...·truncated·by·diffoscope;·len:·573,·SHA:·044fbc7e1515e1476fc614dfb70f68d68c93f6f38fea72ec6f960f9820b3c778·...·]-18">}</span><span·class="p">,</span><span·class="w"> |
| 508 | ·······</span><span·class="ss">prim_buffer</span><span·class="w">·</span><span·class="p">=></span><span·class="w"> | 508 | ·······</span><span·class="ss">prim_buffer</span><span·class="w">·</span><span·class="p">=></span><span·class="w"> |
| 509 | ···········</span><span·class="p"·data-group-id=" | 509 | ···········</span><span·class="p"·data-group-id="7166410113-24">#{</span><span·class="ss">nif_internal</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="7166410113-25">{</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">[·...·truncated·by·diffoscope;·len:·686,·SHA:·e24669e557df953f2b870545b332025c24ecc2a29137160ede3f15222baeeb13·...·]-25">}</span><span·class="p">,</span><span·class="w"> |
| 510 | ·············</span><span·class="ss">binary</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 510 | ·············</span><span·class="ss">binary</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="7166410113-26">{</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class=[·...·truncated·by·diffoscope;·len:·733,·SHA:·9556a79d32c2c2b70f9ade02831173119e23e6ee6676f06a0d32e9f20634f920·...·]-3">}</span></code></pre> |
| 511 | ··</section> | 511 | ··</section> |
| 512 | </section> | 512 | </section> |
| 513 | <section·class="detail"·id="carriers/0"> | 513 | <section·class="detail"·id="carriers/0"> |
| 514 | ··<div·class="detail-header"> | 514 | ··<div·class="detail-header"> |
| 515 | ····<a·href="#carriers/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 515 | ····<a·href="#carriers/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 516 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 516 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 576, 23 lines modified | Offset 576, 23 lines modified | ||
| 576 | allocator·type·and·scheduler·id.</p><p>If·the·specified·allocator·types·are·not·enabled,·the·call·will·fail·with | 576 | allocator·type·and·scheduler·id.</p><p>If·the·specified·allocator·types·are·not·enabled,·the·call·will·fail·with |
| 577 | <code·class="inline">{error,·not_enabled}</code>.</p><p>The·following·options·can·be·used:</p><ul><li><p><strong><code·class="inline">allocator_types</code></strong>·-·The·allocator·types·that·will·be·searched.·Defaults·to | 577 | <code·class="inline">{error,·not_enabled}</code>.</p><p>The·following·options·can·be·used:</p><ul><li><p><strong><code·class="inline">allocator_types</code></strong>·-·The·allocator·types·that·will·be·searched.·Defaults·to |
| 578 | all·<code·class="inline">alloc_util</code>·allocators.</p></li><li><p><strong><code·class="inline">scheduler_ids</code></strong>·-·The·scheduler·ids·whose·allocator·instances·will·be | 578 | all·<code·class="inline">alloc_util</code>·allocators.</p></li><li><p><strong><code·class="inline">scheduler_ids</code></strong>·-·The·scheduler·ids·whose·allocator·instances·will·be |
| 579 | searched.·A·scheduler·id·of·0·will·refer·to·the·global·instance·that·is·not | 579 | searched.·A·scheduler·id·of·0·will·refer·to·the·global·instance·that·is·not |
| 580 | tied·to·any·particular·scheduler.·Defaults·to·all·schedulers·and·the·global | 580 | tied·to·any·particular·scheduler.·Defaults·to·all·schedulers·and·the·global |
| 581 | instance.</p></li><li><p><strong><code·class="inline">histogram_start</code></strong>·-·The·upper·bound·of·the·first·interval·in·the·free | 581 | instance.</p></li><li><p><strong><code·class="inline">histogram_start</code></strong>·-·The·upper·bound·of·the·first·interval·in·the·free |
| 582 | block·size·histograms.·Defaults·to·512.</p></li><li><p><strong><code·class="inline">histogram_width</code></strong>·-·The·number·of·intervals·in·the·free·block·size | 582 | block·size·histograms.·Defaults·to·512.</p></li><li><p><strong><code·class="inline">histogram_width</code></strong>·-·The·number·of·intervals·in·the·free·block·size |
| 583 | histograms.·Defaults·to·14.</p></li></ul><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">instrument</span><span·class="p">:</span><span·class="nf">carriers</span><span·class="p"·data-group-id=" | 583 | histograms.·Defaults·to·14.</p></li></ul><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">instrument</span><span·class="p">:</span><span·class="nf">carriers</span><span·class="p"·data-group-id="3503697277-1">(</span><span·class="p"·data-group-id="3503697277-2">#{</span><span·class="w">·</span><span·class="ss">histogram_start</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">512</span><span·class="p[·...·truncated·by·diffoscope;·len:·291,·SHA:·7d9500cc777b2a433834d60bebef8d650a20737c453abadf83e1d1b2323583ec·...·]7-1">)</span><span·class="p">.</span><span·class="w"> |
| 584 | </span><span·class="p"·data-group-id=" | 584 | </span><span·class="p"·data-group-id="3503697277-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="3503697277-4">{</span><span·class="mi">512</span><span·class="p">,</span><span·class="w"> |
| 585 | ·····</span><span·class="p"·data-group-id=" | 585 | ·····</span><span·class="p"·data-group-id="3503697277-5">[</span><span·class="p"·data-group-id="3503697277-6">{</span><span·class="ss">driver_alloc</span><span·class="p">,</span><span·class="ss">false</span><span·class="p">,</span><span·class="mi">262144</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="w"> |
| 586 | ····················</span><span·class="p"·data-group-id=" | 586 | ····················</span><span·class="p"·data-group-id="3503697277-7">[</span><span·class="p"·data-group-id="3503697277-8">{</span><span·class="ss">driver_alloc</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">32784</span><span·class="p"·data-group-id="3503697277-8[·...·truncated·by·diffoscope;·len:·50,·SHA:·330c70ccaa2c98c23ab6be9c8221e72d73037a8eb22744e66a93ae0e8026688c·...·]7-7">]</span><span·class="p">,</span><span·class="w"> |
| 587 | ····················</span><span·class="p"·data-group-id=" | 587 | ····················</span><span·class="p"·data-group-id="3503697277-9">{</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="[·...·truncated·by·diffoscope;·len:·227,·SHA:·7e75ceccdb8f40b6bdc1eb51612b486e5b8062e4869b65ef8801646f62bf1ca9·...·]7-6">}</span><span·class="p">,</span><span·class="w"> |
| 588 | ······</span><span·class="p"·data-group-id=" | 588 | ······</span><span·class="p"·data-group-id="3503697277-10">{</span><span·class="ss">binary_alloc</span><span·class="p">,</span><span·class="ss">false</span><span·class="p">,</span><span·class="mi">32768</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="w"> |
| 589 | ····················</span><span·class="p"·data-group-id=" | 589 | ····················</span><span·class="p"·data-group-id="3503697277-11">[</span><span·class="p"·data-group-id="3503697277-12">{</span><span·class="ss">binary_alloc</span><span·class="p">,</span><span·class="mi">15</span><span·class="p">,</span><span·class="mi">4304</span><span·class="p"·data-group-id="3503697277[·...·truncated·by·diffoscope;·len:·53,·SHA:·054400fd1915e0ea7e982fbfc98b3638060a73416849a38ce142cf9f368d93c3·...·]7-11">]</span><span·class="p">,</span><span·class="w"> |
| 590 | ····················</span><span·class="p"·data-group-id=" | 590 | ····················</span><span·class="p"·data-group-id="3503697277-13">{</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">1</span><span·class=[·...·truncated·by·diffoscope;·len:·229,·SHA:·6413fb41ef0377b50be5a770b72ec586700f5e765dc97626e3e60890fcef5597·...·]7-10">}</span><span·class="p">,</span><span·class="w"> |
| 591 | ······</span><span·class="p"·data-group-id=" | 591 | ······</span><span·class="p"·data-group-id="3503697277-14">{</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="3503697277-14">}</span><span·class="p">|</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class[·...·truncated·by·diffoscope;·len:·135,·SHA:·0e7e4dd32d3ece9ca0bc959fc7f52392d305e249a613e991ac6dac974f9c76b0·...·]7-3">}</span></code></pre> |
| 592 | ··</section> | 592 | ··</section> |
| 593 | </section> | 593 | </section> |
| 594 | ····</div> | 594 | ····</div> |
| 595 | ··</section> | 595 | ··</section> |
| 596 | ····<footer·class="footer"> | 596 | ····<footer·class="footer"> |
| Offset 146, 40 lines modified | Offset 146, 40 lines modified | ||
| 146 | $·make</code></pre><h2·id="dyntrace-tracepoints"·class="section-heading"> | 146 | $·make</code></pre><h2·id="dyntrace-tracepoints"·class="section-heading"> |
| 147 | ··<a·href="#dyntrace-tracepoints"·class="hover-link"> | 147 | ··<a·href="#dyntrace-tracepoints"·class="hover-link"> |
| 148 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 148 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 149 | ··</a> | 149 | ··</a> |
| 150 | ··<span·class="text">Dyntrace·Tracepoints</span> | 150 | ··<span·class="text">Dyntrace·Tracepoints</span> |
| 151 | </h2> | 151 | </h2> |
| 152 | <p>All·tracepoints·are·in·the·domain·of·<code·class="inline">org_erlang_dyntrace</code></p><p>All·Erlang·types·are·the·string·equivalent·in·LTTng.</p><p><em>process_spawn</em></p><ul><li><code·class="inline">pid·:·string</code>·::·Process·ID.·Ex.·<code·class="inline">"<0.131.0>"</code></li><li><code·class="inline">parent·:·string</code>·::·Process·ID.·Ex.·<code·class="inline">"<0.131.0>"</code></li><li><code·class="inline">entry·:·string</code>·::·Code·Location.·Ex.·<code·class="inline">"lists:sort/1"</code></li></ul><p>Available·through·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#trace/3"><code·class="inline">erlang:trace/3</code></a>·with·trace·flag·<code·class="inline">procs</code>·and | 152 | <p>All·tracepoints·are·in·the·domain·of·<code·class="inline">org_erlang_dyntrace</code></p><p>All·Erlang·types·are·the·string·equivalent·in·LTTng.</p><p><em>process_spawn</em></p><ul><li><code·class="inline">pid·:·string</code>·::·Process·ID.·Ex.·<code·class="inline">"<0.131.0>"</code></li><li><code·class="inline">parent·:·string</code>·::·Process·ID.·Ex.·<code·class="inline">"<0.131.0>"</code></li><li><code·class="inline">entry·:·string</code>·::·Code·Location.·Ex.·<code·class="inline">"lists:sort/1"</code></li></ul><p>Available·through·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#trace/3"><code·class="inline">erlang:trace/3</code></a>·with·trace·flag·<code·class="inline">procs</code>·and |
| 153 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">process_spawn</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 153 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">process_spawn</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="6774296299-1">{</span><span·class="w">·</span><span·class="ss">cpu_id</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">3</span><span·class="w">·</span><span·class="p"·data-group-id="6774296299-1">}</span><span·[·...·truncated·by·diffoscope;·len:·731,·SHA:·bfe35f9ffe940be35fdd50c434368d3074c3e5710aa2e2b8e6c3dc932ec8e91f·...·]-2">}</span></code></pre><p><em>process_link</em></p><ul><li><code·class="inline">to·:·string</code>·::·Process·ID·or·Port·ID.·Ex.·<code·class="inline">"<0.131.0>"</code></li><li><code·class="inline">from·:·string</code>·::·Process·ID·or·Port·ID.·Ex.·<code·class="inline">"<0.131.0>"</code></li><li><p><code·class="inline">type·:·string</code>·::·<code·class="inline">"link"·|·"unlink"</code></p></li></ul><p>Available·through·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#trace/3"><code·class="inline">erlang:trace/3</code></a>·with·trace·flag·<code·class="inline">procs</code>·and |
| 154 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="text">process_link:·{·cpu_id·=·3·},·{·from·=·"<0.130.0>",·to·=·"<0.131.0>",·type·=·"link"·}</code></pre><p><em>process_exit</em></p><ul><li><code·class="inline">pid·:·string</code>·::·Process·ID.·Ex.·<code·class="inline">"<0.131.0>"</code></li><li><code·class="inline">reason·:·string</code>·::·Exit·reason.·Ex.·<code·class="inline">"normal"</code></li></ul><p>Available·through·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#trace/3"><code·class="inline">erlang:trace/3</code></a>·with·trace·flag·<code·class="inline">procs</code>·and | 154 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="text">process_link:·{·cpu_id·=·3·},·{·from·=·"<0.130.0>",·to·=·"<0.131.0>",·type·=·"link"·}</code></pre><p><em>process_exit</em></p><ul><li><code·class="inline">pid·:·string</code>·::·Process·ID.·Ex.·<code·class="inline">"<0.131.0>"</code></li><li><code·class="inline">reason·:·string</code>·::·Exit·reason.·Ex.·<code·class="inline">"normal"</code></li></ul><p>Available·through·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#trace/3"><code·class="inline">erlang:trace/3</code></a>·with·trace·flag·<code·class="inline">procs</code>·and |
| 155 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="text">process_exit:·{·cpu_id·=·3·},·{·pid·=·"<0.130.0>",·reason·=·"normal"·}</code></pre><p><em>process_register</em></p><ul><li><code·class="inline">pid·:·string</code>·::·Process·ID.·Ex.·<code·class="inline">"<0.131.0>"</code></li><li><code·class="inline">name·:·string</code>·::·Registered·name.·Ex.·<code·class="inline">"logger"</code></li><li><p><code·class="inline">type·:·string</code>·::·<code·class="inline">"register"·|·"unregister"</code></p></li></ul><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">process_register</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 155 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="text">process_exit:·{·cpu_id·=·3·},·{·pid·=·"<0.130.0>",·reason·=·"normal"·}</code></pre><p><em>process_register</em></p><ul><li><code·class="inline">pid·:·string</code>·::·Process·ID.·Ex.·<code·class="inline">"<0.131.0>"</code></li><li><code·class="inline">name·:·string</code>·::·Registered·name.·Ex.·<code·class="inline">"logger"</code></li><li><p><code·class="inline">type·:·string</code>·::·<code·class="inline">"register"·|·"unregister"</code></p></li></ul><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">process_register</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="5003511906-1">{</span><span·class="w">·</span><span·class="ss">cpu_id</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="p"·data-group-id="5003511906-1">}</span><span·[·...·truncated·by·diffoscope;·len:·702,·SHA:·a7b048048475ae98357271f911b9481c4db83db0645e291182a30ab55eaa8b8f·...·]6-2">}</span></code></pre><p><em>process_scheduled</em></p><ul><li><code·class="inline">pid·:·string</code>·::·Process·ID.·Ex.·<code·class="inline">"<0.131.0>"</code></li><li><code·class="inline">entry·:·string</code>·::·Code·Location.·Ex.·<code·class="inline">"lists:sort/1"</code></li><li><code·class="inline">type·:·string</code>·:: |
| 156 | <code·class="inline">"in"·|·"out"·|·"in_exiting"·|·"out_exiting"·|·"out_exited"</code></li></ul><p>Available·through·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#trace/3"><code·class="inline">erlang:trace/3</code></a>·with·trace·flag·<code·class="inline">running</code>·and | 156 | <code·class="inline">"in"·|·"out"·|·"in_exiting"·|·"out_exiting"·|·"out_exited"</code></li></ul><p>Available·through·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#trace/3"><code·class="inline">erlang:trace/3</code></a>·with·trace·flag·<code·class="inline">running</code>·and |
| 157 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">process_scheduled</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 157 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">process_scheduled</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="2596057263-1">{</span><span·class="w">·</span><span·class="ss">cpu_id</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="p"·data-group-id="2596057263-1">}</span><span·[·...·truncated·by·diffoscope;·len:·715,·SHA:·315c40f274900ba57398cd91a43efd82383fa0b929eaaff4c3a72d913022c89b·...·]3-2">}</span></code></pre><p><em>port_open</em></p><ul><li><code·class="inline">pid·:·string</code>·::·Process·ID.·Ex.·<code·class="inline">"<0.131.0>"</code></li><li><code·class="inline">driver·:·string</code>·::·Driver·name.·Ex.·<code·class="inline">"tcp_inet"</code></li><li><code·class="inline">port·:·string</code>·::·Port·ID.·Ex.·<code·class="inline">"#Port<0.1031>"</code></li></ul><p>Available·through·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#trace/3"><code·class="inline">erlang:trace/3</code></a>·with·trace·flag·<code·class="inline">ports</code>·and |
| 158 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="text">port_open:·{·cpu_id·=·5·},·{·pid·=·"<0.131.0>",·driver·=·"'/bin/sh·-s·unix:cmd'",·port·=·"#Port<0.1887>"·}</code></pre><p><em>port_exit</em></p><ul><li><code·class="inline">port·:·string</code>·::·Port·ID.·Ex.·<code·class="inline">"#Port<0.1031>"</code></li><li><code·class="inline">reason·:·string</code>·::·Exit·reason.·Ex.·<code·class="inline">"normal"</code></li></ul><p>Available·through·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#trace/3"><code·class="inline">erlang:trace/3</code></a>·with·trace·flag·<code·class="inline">ports</code>·and | 158 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="text">port_open:·{·cpu_id·=·5·},·{·pid·=·"<0.131.0>",·driver·=·"'/bin/sh·-s·unix:cmd'",·port·=·"#Port<0.1887>"·}</code></pre><p><em>port_exit</em></p><ul><li><code·class="inline">port·:·string</code>·::·Port·ID.·Ex.·<code·class="inline">"#Port<0.1031>"</code></li><li><code·class="inline">reason·:·string</code>·::·Exit·reason.·Ex.·<code·class="inline">"normal"</code></li></ul><p>Available·through·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#trace/3"><code·class="inline">erlang:trace/3</code></a>·with·trace·flag·<code·class="inline">ports</code>·and |
| 159 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="text">port_exit:·{·cpu_id·=·5·},·{·port·=·"#Port<0.1887>",·reason·=·"normal"·}</code></pre><p><em>port_link</em></p><ul><li><code·class="inline">to·:·string</code>·::·Process·ID.·Ex.·<code·class="inline">"<0.131.0>"</code></li><li><code·class="inline">from·:·string</code>·::·Process·ID.·Ex.·<code·class="inline">"<0.131.0>"</code></li><li><p><code·class="inline">type·:·string</code>·::·<code·class="inline">"link"·|·"unlink"</code></p></li></ul><p>Available·through·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#trace/3"><code·class="inline">erlang:trace/3</code></a>·with·trace·flag·<code·class="inline">ports</code>·and | 159 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="text">port_exit:·{·cpu_id·=·5·},·{·port·=·"#Port<0.1887>",·reason·=·"normal"·}</code></pre><p><em>port_link</em></p><ul><li><code·class="inline">to·:·string</code>·::·Process·ID.·Ex.·<code·class="inline">"<0.131.0>"</code></li><li><code·class="inline">from·:·string</code>·::·Process·ID.·Ex.·<code·class="inline">"<0.131.0>"</code></li><li><p><code·class="inline">type·:·string</code>·::·<code·class="inline">"link"·|·"unlink"</code></p></li></ul><p>Available·through·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#trace/3"><code·class="inline">erlang:trace/3</code></a>·with·trace·flag·<code·class="inline">ports</code>·and |
| 160 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">port_link</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 160 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">port_link</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="8322310058-1">{</span><span·class="w">·</span><span·class="ss">cpu_id</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">5</span><span·class="w">·</span><span·class="p"·data-group-id="8322310058-1">}</span><span·[·...·truncated·by·diffoscope;·len:·723,·SHA:·d702c5831e606fbf075b30d38b097c816b156b622f50c3183f7d5c5dc316e8ac·...·]-2">}</span></code></pre><p><em>port_scheduled</em></p><p>Available·through·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#trace/3"><code·class="inline">erlang:trace/3</code></a>·with·trace·flag·<code·class="inline">running</code>·and |
| 161 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><ul><li><code·class="inline">port·:·string</code>·::·Port·ID.·Ex.·<code·class="inline">"#Port<0.1031>"</code></li><li><code·class="inline">entry·:·string</code>·::·Callback.·Ex.·<code·class="inline">"open"</code></li><li><code·class="inline">type·:·string</code>·:: | 161 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><ul><li><code·class="inline">port·:·string</code>·::·Port·ID.·Ex.·<code·class="inline">"#Port<0.1031>"</code></li><li><code·class="inline">entry·:·string</code>·::·Callback.·Ex.·<code·class="inline">"open"</code></li><li><code·class="inline">type·:·string</code>·:: |
| 162 | <code·class="inline">"in"·|·"out"·|·"in_exiting"·|·"out_exiting"·|·"out_exited"</code></li></ul><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">port_scheduled</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="6 | 162 | <code·class="inline">"in"·|·"out"·|·"in_exiting"·|·"out_exiting"·|·"out_exited"</code></li></ul><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">port_scheduled</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="6558757586-1">{</span><span·class="w">·</span><span·class="ss">cpu_id</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">5</span><span·class="w">·</span><span·class="p"·data-group-id="6558757586-1">}</span><span·c[·...·truncated·by·diffoscope;·len:·711,·SHA:·e051ed1725b01ba700b16caefa296e33067ce2b77053648e3f0a4f5c95a45822·...·]-2">}</span></code></pre><p>Available·through·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#trace/3"><code·class="inline">erlang:trace/3</code></a>·with·trace·flag·<code·class="inline">running</code>·and |
| 163 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p><em>function_call</em></p><ul><li><code·class="inline">pid·:·string</code>·::·Process·ID.·Ex.·<code·class="inline">"<0.131.0>"</code></li><li><code·class="inline">entry·:·string</code>·::·Code·Location.·Ex.·<code·class="inline">"lists:sort/1"</code></li><li><code·class="inline">depth·:·integer</code>·::·Stack·depth.·Ex.·<code·class="inline">0</code></li></ul><p>Available·through·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#trace/3"><code·class="inline">erlang:trace/3</code></a>·with·trace·flag·<code·class="inline">call</code>·and | 163 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p><em>function_call</em></p><ul><li><code·class="inline">pid·:·string</code>·::·Process·ID.·Ex.·<code·class="inline">"<0.131.0>"</code></li><li><code·class="inline">entry·:·string</code>·::·Code·Location.·Ex.·<code·class="inline">"lists:sort/1"</code></li><li><code·class="inline">depth·:·integer</code>·::·Stack·depth.·Ex.·<code·class="inline">0</code></li></ul><p>Available·through·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#trace/3"><code·class="inline">erlang:trace/3</code></a>·with·trace·flag·<code·class="inline">call</code>·and |
| 164 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">function_call</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 164 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">function_call</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="6730183582-1">{</span><span·class="w">·</span><span·class="ss">cpu_id</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">5</span><span·class="w">·</span><span·class="p"·data-group-id="6730183582-1">}</span><span·[·...·truncated·by·diffoscope;·len:·740,·SHA:·3b53cf4db96ed6eb7203ce170b578c179be70e38e41dddbd9dcdc5dabdce7c19·...·]-2">}</span></code></pre><p><em>function_return</em></p><ul><li><code·class="inline">pid·:·string</code>·::·Process·ID.·Ex.·<code·class="inline">"<0.131.0>"</code></li><li><code·class="inline">entry·:·string</code>·::·Code·Location.·Ex.·<code·class="inline">"lists:sort/1"</code></li><li><code·class="inline">depth·:·integer</code>·::·Stack·depth.·Ex.·<code·class="inline">0</code></li></ul><p>Available·through·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#trace/3"><code·class="inline">erlang:trace/3</code></a>·with·trace·flag·<code·class="inline">call</code>·or·<code·class="inline">return_to</code>·and |
| 165 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">function_return</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 165 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">function_return</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="4484006169-1">{</span><span·class="w">·</span><span·class="ss">cpu_id</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">5</span><span·class="w">·</span><span·class="p"·data-group-id="4484006169-1">}</span><span·[·...·truncated·by·diffoscope;·len:·720,·SHA:·7655fb903c905b16fba8412853b80cbd27dab3c1dd4f2dcd8d997e5ad31d32fa·...·]-2">}</span></code></pre><p><em>function_exception</em></p><ul><li><code·class="inline">pid·:·string</code>·::·Process·ID.·Ex.·<code·class="inline">"<0.131.0>"</code></li><li><code·class="inline">entry·:·string</code>·::·Code·Location.·Ex.·<code·class="inline">"lists:sort/1"</code></li><li><code·class="inline">class·:·string</code>·::·Error·reason.·Ex.·<code·class="inline">"error"</code></li></ul><p>Available·through·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#trace/3"><code·class="inline">erlang:trace/3</code></a>·with·trace·flag·<code·class="inline">call</code>·and |
| 166 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">function_exception</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 166 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">function_exception</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="4598868384-1">{</span><span·class="w">·</span><span·class="ss">cpu_id</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">5</span><span·class="w">·</span><span·class="p"·data-group-id="4598868384-1">}</span><span·[·...·truncated·by·diffoscope;·len:·718,·SHA:·6b01fdb7d9af049ebe77412b3b5a41d3214a4ad32e1bc8ea366b4b44f9261ad4·...·]-2">}</span></code></pre><p><em>message_send</em></p><ul><li><code·class="inline">from·:·string</code>·::·Process·ID·or·Port·ID.·Ex.·<code·class="inline">"<0.131.0>"</code></li><li><code·class="inline">to·:·string</code>·::·Process·ID·or·Port·ID.·Ex.·<code·class="inline">"<0.131.0>"</code></li><li><code·class="inline">message·:·string</code>·::·Message·sent.·Ex.·<code·class="inline">"{<0.162.0>,ok}"</code></li></ul><p>Available·through·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#trace/3"><code·class="inline">erlang:trace/3</code></a>·with·trace·flag·<code·class="inline">send</code>·and |
| 167 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="text">message_send:·{·cpu_id·=·3·},·{·from·=·"#Port<0.1938>",·to·=·"<0.160.0>",·message·=·"{#Port<0.1938>,eof}"·}</code></pre><p><em>message_receive</em></p><ul><li><code·class="inline">to·:·string</code>·::·Process·ID·or·Port·ID.·Ex.·<code·class="inline">"<0.131.0>"</code></li><li><code·class="inline">message·:·string</code>·::·Message·received.·Ex.·<code·class="inline">"{<0.162.0>,ok}"</code></li></ul><p>Available·through·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#trace/3"><code·class="inline">erlang:trace/3</code></a>·with·trace·flag·<code·class="inline">'receive'</code>·and | 167 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="text">message_send:·{·cpu_id·=·3·},·{·from·=·"#Port<0.1938>",·to·=·"<0.160.0>",·message·=·"{#Port<0.1938>,eof}"·}</code></pre><p><em>message_receive</em></p><ul><li><code·class="inline">to·:·string</code>·::·Process·ID·or·Port·ID.·Ex.·<code·class="inline">"<0.131.0>"</code></li><li><code·class="inline">message·:·string</code>·::·Message·received.·Ex.·<code·class="inline">"{<0.162.0>,ok}"</code></li></ul><p>Available·through·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#trace/3"><code·class="inline">erlang:trace/3</code></a>·with·trace·flag·<code·class="inline">'receive'</code>·and |
| 168 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="text">message_receive:·{·cpu_id·=·7·},·{·to·=·"<0.167.0>",·message·=·"{<0.165.0>,ok}"·}</code></pre><p><em>gc_minor_start</em></p><ul><li><code·class="inline">pid·:·string</code>·::·Process·ID.·Ex.·<code·class="inline">"<0.131.0>"</code></li><li><code·class="inline">need·:·integer</code>·::·Heap·need.·Ex.·<code·class="inline">2</code></li><li><code·class="inline">heap·:·integer</code>·::·Young·heap·word·size.·Ex.·<code·class="inline">233</code></li><li><code·class="inline">old_heap·:·integer</code>·::·Old·heap·word·size.·Ex.·<code·class="inline">233</code></li></ul><p>Available·through·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#trace/3"><code·class="inline">erlang:trace/3</code></a>·with·trace·flag·<code·class="inline">garbage_collection</code>·and | 168 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="text">message_receive:·{·cpu_id·=·7·},·{·to·=·"<0.167.0>",·message·=·"{<0.165.0>,ok}"·}</code></pre><p><em>gc_minor_start</em></p><ul><li><code·class="inline">pid·:·string</code>·::·Process·ID.·Ex.·<code·class="inline">"<0.131.0>"</code></li><li><code·class="inline">need·:·integer</code>·::·Heap·need.·Ex.·<code·class="inline">2</code></li><li><code·class="inline">heap·:·integer</code>·::·Young·heap·word·size.·Ex.·<code·class="inline">233</code></li><li><code·class="inline">old_heap·:·integer</code>·::·Old·heap·word·size.·Ex.·<code·class="inline">233</code></li></ul><p>Available·through·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#trace/3"><code·class="inline">erlang:trace/3</code></a>·with·trace·flag·<code·class="inline">garbage_collection</code>·and |
| 169 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">gc_minor_start</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 169 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">gc_minor_start</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="4874777296-1">{</span><span·class="w">·</span><span·class="ss">cpu_id</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="p"·data-group-id="4874777296-1">}</span><span·[·...·truncated·by·diffoscope;·len:·858,·SHA:·1fa0c5cc8b7179c63489fb7723556e58141bcef05c8e04faa5dccbb49e7dbae3·...·]-2">}</span></code></pre><p><em>gc_minor_end</em></p><ul><li><code·class="inline">pid·:·string</code>·::·Process·ID.·Ex.·<code·class="inline">"<0.131.0>"</code></li><li><code·class="inline">reclaimed·:·integer</code>·::·Heap·reclaimed.·Ex.·<code·class="inline">2</code></li><li><code·class="inline">heap·:·integer</code>·::·Young·heap·word·size.·Ex.·<code·class="inline">233</code></li><li><code·class="inline">old_heap·:·integer</code>·::·Old·heap·word·size.·Ex.·<code·class="inline">233</code></li></ul><p>Available·through·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#trace/3"><code·class="inline">erlang:trace/3</code></a>·with·trace·flag·<code·class="inline">garbage_collection</code>·and |
| 170 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="c">gc_minor_end:·{·cpu_id·=·0·},·{·pid·=·"<0.172.0>",·reclaimed·=·120,·heap·=·1598,·old_heap·=·1598·}</code></pre><p><em>gc_major_start</em></p><ul><li><code·class="inline">pid·:·string</code>·::·Process·ID.·Ex.·<code·class="inline">"<0.131.0>"</code></li><li><code·class="inline">need·:·integer</code>·::·Heap·need.·Ex.·<code·class="inline">2</code></li><li><code·class="inline">heap·:·integer</code>·::·Young·heap·word·size.·Ex.·<code·class="inline">233</code></li><li><code·class="inline">old_heap·:·integer</code>·::·Old·heap·word·size.·Ex.·<code·class="inline">233</code></li></ul><p>Available·through·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#trace/3"><code·class="inline">erlang:trace/3</code></a>·with·trace·flag·<code·class="inline">garbage_collection</code>·and | 170 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="c">gc_minor_end:·{·cpu_id·=·0·},·{·pid·=·"<0.172.0>",·reclaimed·=·120,·heap·=·1598,·old_heap·=·1598·}</code></pre><p><em>gc_major_start</em></p><ul><li><code·class="inline">pid·:·string</code>·::·Process·ID.·Ex.·<code·class="inline">"<0.131.0>"</code></li><li><code·class="inline">need·:·integer</code>·::·Heap·need.·Ex.·<code·class="inline">2</code></li><li><code·class="inline">heap·:·integer</code>·::·Young·heap·word·size.·Ex.·<code·class="inline">233</code></li><li><code·class="inline">old_heap·:·integer</code>·::·Old·heap·word·size.·Ex.·<code·class="inline">233</code></li></ul><p>Available·through·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#trace/3"><code·class="inline">erlang:trace/3</code></a>·with·trace·flag·<code·class="inline">garbage_collection</code>·and |
| 171 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">gc_major_start</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 171 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">gc_major_start</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="7645597000-1">{</span><span·class="w">·</span><span·class="ss">cpu_id</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="p"·data-group-id="7645597000-1">}</span><span·[·...·truncated·by·diffoscope;·len:·862,·SHA:·66ef3e10b77e77122b7de02b7e6f5826ec640910edff24edc61a4019563d5c39·...·]-2">}</span></code></pre><p><em>gc_major_end</em></p><ul><li><code·class="inline">pid·:·string</code>·::·Process·ID.·Ex.·<code·class="inline">"<0.131.0>"</code></li><li><code·class="inline">reclaimed·:·integer</code>·::·Heap·reclaimed.·Ex.·<code·class="inline">2</code></li><li><code·class="inline">heap·:·integer</code>·::·Young·heap·word·size.·Ex.·<code·class="inline">233</code></li><li><code·class="inline">old_heap·:·integer</code>·::·Old·heap·word·size.·Ex.·<code·class="inline">233</code></li></ul><p>Available·through·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#trace/3"><code·class="inline">erlang:trace/3</code></a>·with·trace·flag·<code·class="inline">garbage_collection</code>·and |
| 172 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="text">gc_major_end:·{·cpu_id·=·0·},·{·pid·=·"<0.172.0>",·reclaimed·=·240,·heap·=·4185,·old_heap·=·0·}</code></pre><h2·id="beam-tracepoints"·class="section-heading"> | 172 | <code·class="inline">{tracer,dyntrace,[]}</code>·as·tracer·module.</p><p>Example:</p><pre><code·class="text">gc_major_end:·{·cpu_id·=·0·},·{·pid·=·"<0.172.0>",·reclaimed·=·240,·heap·=·4185,·old_heap·=·0·}</code></pre><h2·id="beam-tracepoints"·class="section-heading"> |
| 173 | ··<a·href="#beam-tracepoints"·class="hover-link"> | 173 | ··<a·href="#beam-tracepoints"·class="hover-link"> |
| 174 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 174 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 175 | ··</a> | 175 | ··</a> |
| 176 | ··<span·class="text">BEAM·Tracepoints</span> | 176 | ··<span·class="text">BEAM·Tracepoints</span> |
| 177 | </h2> | 177 | </h2> |
| 178 | <p>All·tracepoints·are·in·the·domain·of·<code·class="inline">org_erlang_otp</code></p><p>All·Erlang·types·are·the·string·equivalent·in·LTTng.</p><p><em>driver_init</em></p><ul><li><code·class="inline">driver·:·string</code>·::·Driver·name.·Ex.·<code·class="inline">"tcp_inet"</code></li><li><code·class="inline">major·:·integer</code>·::·Major·version.·Ex.·<code·class="inline">3</code></li><li><code·class="inline">minor·:·integer</code>·::·Minor·version.·Ex.·<code·class="inline">1</code></li><li><code·class="inline">flags·:·integer</code>·::·Flags.·Ex.·<code·class="inline">1</code></li></ul><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">driver_init</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id=" | 178 | <p>All·tracepoints·are·in·the·domain·of·<code·class="inline">org_erlang_otp</code></p><p>All·Erlang·types·are·the·string·equivalent·in·LTTng.</p><p><em>driver_init</em></p><ul><li><code·class="inline">driver·:·string</code>·::·Driver·name.·Ex.·<code·class="inline">"tcp_inet"</code></li><li><code·class="inline">major·:·integer</code>·::·Major·version.·Ex.·<code·class="inline">3</code></li><li><code·class="inline">minor·:·integer</code>·::·Minor·version.·Ex.·<code·class="inline">1</code></li><li><code·class="inline">flags·:·integer</code>·::·Flags.·Ex.·<code·class="inline">1</code></li></ul><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">driver_init</span><span·class="p">:</span><span·class="w">·</span><span·class="p"·data-group-id="3632429310-1">{</span><span·class="w">·</span><span·class="ss">cpu_id</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">2</span><span·class="w">·</span><span·class="p"·data-group-id="3632429310-1">}</span><span·[·...·truncated·by·diffoscope;·len:·19389,·SHA:·4b24f32d48a63b2f6536bad56084a0f4929de6a11ce545096c84284bc1e803a9·...·]-2">}</span></code></pre><p><em>carrier_create</em></p><ul><li><code·class="inline">type·:·string</code>·::·Carrier·type.·Ex.·<code·class="inline">"ets_alloc"</code></li><li><code·class="inline">instance·:·integer</code>·::·Allocator·instance.·Ex.·<code·class="inline">1</code></li><li><code·class="inline">size·:·integer</code>·::·Carrier·size.·Ex.·<code·class="inline">262144</code></li><li><code·class="inline">mbc_carriers·:·integer</code>·::·Number·of·multiblock·carriers·in·instance.·Ex.·<code·class="inline">3</code></li><li><code·class="inline">mbc_carriers_size·:·integer</code>·::·Total·size·of·multiblock·blocks·carriers·in |
| 179 | instance.·Ex.·<code·class="inline">1343488</code></li><li><code·class="inline">mbc_blocks·:·integer</code>·::·Number·of·multiblock·blocks·in·instance.·Ex.·<code·class="inline">122</code></li><li><code·class="inline">mbc_blocks_size·:·integer</code>·::·Total·size·of·all·multiblock·blocks·in | 179 | instance.·Ex.·<code·class="inline">1343488</code></li><li><code·class="inline">mbc_blocks·:·integer</code>·::·Number·of·multiblock·blocks·in·instance.·Ex.·<code·class="inline">122</code></li><li><code·class="inline">mbc_blocks_size·:·integer</code>·::·Total·size·of·all·multiblock·blocks·in |
| 180 | instance.·Ex.·<code·class="inline">285296</code></li><li><code·class="inline">sbc_carriers·:·integer</code>·::·Number·of·singleblock·carriers·in·instance.·Ex. | 180 | instance.·Ex.·<code·class="inline">285296</code></li><li><code·class="inline">sbc_carriers·:·integer</code>·::·Number·of·singleblock·carriers·in·instance.·Ex. |
| 181 | <code·class="inline">1</code></li><li><code·class="inline">sbc_carriers_size·:·integer</code>·::·Total·size·of·singleblock·blocks·carriers·in | 181 | <code·class="inline">1</code></li><li><code·class="inline">sbc_carriers_size·:·integer</code>·::·Total·size·of·singleblock·blocks·carriers·in |
| 182 | instance.·Ex.·<code·class="inline">1343488</code></li><li><code·class="inline">sbc_blocks·:·integer</code>·::·Number·of·singleblocks·in·instance.·Ex.·<code·class="inline">1</code></li><li><code·class="inline">sbc_blocks_size·:·integer</code>·::·Total·size·of·all·singleblock·blocks·in | 182 | instance.·Ex.·<code·class="inline">1343488</code></li><li><code·class="inline">sbc_blocks·:·integer</code>·::·Number·of·singleblocks·in·instance.·Ex.·<code·class="inline">1</code></li><li><code·class="inline">sbc_blocks_size·:·integer</code>·::·Total·size·of·all·singleblock·blocks·in |
| 183 | instance.·Ex.·<code·class="inline">285296</code></li></ul><p>Example:</p><pre><code·class="c">carrier_create:·{·cpu_id·=·2·},·{·type·=·"ets_alloc",·instance·=·7,·size·=·2097152,·mbc_carriers·=·4,·mbc_carriers_size·=·3440640,·mbc_blocks·=·526,·mbc_blocks_size·=·1278576,·sbc_carriers·=·0,·sbc_carriers_size·=·0,·sbc_blocks·=·0,·sbc_blocks_size·=·0·}</code></pre><p><em>carrier_destroy</em></p><ul><li><code·class="inline">type·:·string</code>·::·Carrier·type.·Ex.·<code·class="inline">"ets_alloc"</code></li><li><code·class="inline">instance·:·integer</code>·::·Allocator·instance.·Ex.·<code·class="inline">1</code></li><li><code·class="inline">size·:·integer</code>·::·Carrier·size.·Ex.·<code·class="inline">262144</code></li><li><code·class="inline">mbc_carriers·:·integer</code>·::·Number·of·multiblock·carriers·in·instance.·Ex.·<code·class="inline">3</code></li><li><code·class="inline">mbc_carriers_size·:·integer</code>·::·Total·size·of·multiblock·blocks·carriers·in | 183 | instance.·Ex.·<code·class="inline">285296</code></li></ul><p>Example:</p><pre><code·class="c">carrier_create:·{·cpu_id·=·2·},·{·type·=·"ets_alloc",·instance·=·7,·size·=·2097152,·mbc_carriers·=·4,·mbc_carriers_size·=·3440640,·mbc_blocks·=·526,·mbc_blocks_size·=·1278576,·sbc_carriers·=·0,·sbc_carriers_size·=·0,·sbc_blocks·=·0,·sbc_blocks_size·=·0·}</code></pre><p><em>carrier_destroy</em></p><ul><li><code·class="inline">type·:·string</code>·::·Carrier·type.·Ex.·<code·class="inline">"ets_alloc"</code></li><li><code·class="inline">instance·:·integer</code>·::·Allocator·instance.·Ex.·<code·class="inline">1</code></li><li><code·class="inline">size·:·integer</code>·::·Carrier·size.·Ex.·<code·class="inline">262144</code></li><li><code·class="inline">mbc_carriers·:·integer</code>·::·Number·of·multiblock·carriers·in·instance.·Ex.·<code·class="inline">3</code></li><li><code·class="inline">mbc_carriers_size·:·integer</code>·::·Total·size·of·multiblock·blocks·carriers·in |
| 184 | instance.·Ex.·<code·class="inline">1343488</code></li><li><code·class="inline">mbc_blocks·:·integer</code>·::·Number·of·multiblock·blocks·in·instance.·Ex.·<code·class="inline">122</code></li><li><code·class="inline">mbc_blocks_size·:·integer</code>·::·Total·size·of·all·multiblock·blocks·in | 184 | instance.·Ex.·<code·class="inline">1343488</code></li><li><code·class="inline">mbc_blocks·:·integer</code>·::·Number·of·multiblock·blocks·in·instance.·Ex.·<code·class="inline">122</code></li><li><code·class="inline">mbc_blocks_size·:·integer</code>·::·Total·size·of·all·multiblock·blocks·in |
| 185 | instance.·Ex.·<code·class="inline">285296</code></li><li><code·class="inline">sbc_carriers·:·integer</code>·::·Number·of·singleblock·carriers·in·instance.·Ex. | 185 | instance.·Ex.·<code·class="inline">285296</code></li><li><code·class="inline">sbc_carriers·:·integer</code>·::·Number·of·singleblock·carriers·in·instance.·Ex. |
| Offset 194, 18 lines modified | Offset 194, 18 lines modified | ||
| 194 | <p>An·example·of·process·tracing·of·<code·class="inline">os_mon</code>·and·friends.</p><p>Clean·start·of·lttng·in·a·bash·shell.</p><pre><code·class="text">$·lttng·create·erlang-demo | 194 | <p>An·example·of·process·tracing·of·<code·class="inline">os_mon</code>·and·friends.</p><p>Clean·start·of·lttng·in·a·bash·shell.</p><pre><code·class="text">$·lttng·create·erlang-demo |
| 195 | Spawning·a·session·daemon | 195 | Spawning·a·session·daemon |
| 196 | Session·erlang-demo·created. | 196 | Session·erlang-demo·created. |
| 197 | Traces·will·be·written·in·/home/egil/lttng-traces/erlang-demo-20160526-165920</code></pre><p>Start·an·Erlang·node·with·lttng·enabled.</p><pre><code·class="text">$·erl | 197 | Traces·will·be·written·in·/home/egil/lttng-traces/erlang-demo-20160526-165920</code></pre><p>Start·an·Erlang·node·with·lttng·enabled.</p><pre><code·class="text">$·erl |
| 198 | Erlang/OTP·19·[erts-8.0]·[source-4d7b24d]·[64-bit]·[smp:8:8]·[async-threads:10]·[hipe]·[kernel-poll:false]·[lttng] | 198 | Erlang/OTP·19·[erts-8.0]·[source-4d7b24d]·[64-bit]·[smp:8:8]·[async-threads:10]·[hipe]·[kernel-poll:false]·[lttng] |
| 199 | Eshell·V8.0··(abort·with·^G) | 199 | Eshell·V8.0··(abort·with·^G) |
| 200 | 1></code></pre><p>Load·the·<code·class="inline">dyntrace</code>·module.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nf">l</span><span·class="p"·data-group-id=" | 200 | 1></code></pre><p>Load·the·<code·class="inline">dyntrace</code>·module.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nf">l</span><span·class="p"·data-group-id="1925546411-1">(</span><span·class="ss">dyntrace</span><span·class="p"·data-group-id="1925546411-1">)</span><span·class="p">.</span><span·class="w"> |
| 201 | </span><span·class="p"·data-group-id=" | 201 | </span><span·class="p"·data-group-id="1925546411-2">{</span><span·class="ss">module</span><span·class="p">,</span><span·class="ss">dyntrace</span><span·class="p"·data-group-id="1925546411-2">}</span></code></pre><p>All·tracepoints·via·dyntrace·are·now·visible·and·can·be·listed·through |
| 202 | <code·class="inline">lttng·list·-u</code>.</p><p>Enable·the·process_register·LTTng·tracepoint·for·Erlang.</p><pre><code·class="text">$·lttng·enable-event·-u·org_erlang_dyntrace:process_register | 202 | <code·class="inline">lttng·list·-u</code>.</p><p>Enable·the·process_register·LTTng·tracepoint·for·Erlang.</p><pre><code·class="text">$·lttng·enable-event·-u·org_erlang_dyntrace:process_register |
| 203 | UST·event·org_erlang_dyntrace:process_register·created·in·channel·channel0</code></pre><p>Enable·process·tracing·for·new·processes·and·use·<code·class="inline">dyntrace</code>·as·tracer·backend.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">trace</span><span·class="p"·data-group-id=" | 203 | UST·event·org_erlang_dyntrace:process_register·created·in·channel·channel0</code></pre><p>Enable·process·tracing·for·new·processes·and·use·<code·class="inline">dyntrace</code>·as·tracer·backend.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">trace</span><span·class="p"·data-group-id="1813159598-1">(</span><span·class="ss">new</span><span·class="p">,</span><span·class="ss">true</span><span·class="p">,</span><span·class="p"·data-group-id="1813159598-2">[</span><span·class="ss">procs</span><span·class="p">,</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·391,·SHA:·df92c2a0877ef444342843df50a8d1506ec357336f094d349e4f79c9ffb4141e·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 204 | </span><span·class="mi">0</span></code></pre><p>Start·LTTng·tracing.</p><pre><code·class="text">$·lttng·start | 204 | </span><span·class="mi">0</span></code></pre><p>Start·LTTng·tracing.</p><pre><code·class="text">$·lttng·start |
| 205 | Tracing·started·for·session·erlang-demo</code></pre><p>Start·the·<code·class="inline">os_mon</code>·application·in·Erlang.</p><pre><code·class="text">3>·application:ensure_all_started(os_mon). | 205 | Tracing·started·for·session·erlang-demo</code></pre><p>Start·the·<code·class="inline">os_mon</code>·application·in·Erlang.</p><pre><code·class="text">3>·application:ensure_all_started(os_mon). |
| 206 | {ok,[sasl,os_mon]}</code></pre><p>Stop·LTTng·tracing·and·view·the·result.</p><pre><code·class="text">$·lttng·stop | 206 | {ok,[sasl,os_mon]}</code></pre><p>Stop·LTTng·tracing·and·view·the·result.</p><pre><code·class="text">$·lttng·stop |
| 207 | Tracing·stopped·for·session·erlang-demo | 207 | Tracing·stopped·for·session·erlang-demo |
| 208 | $·lttng·view | 208 | $·lttng·view |
| 209 | [17:20:42.561168759]·(+?.?????????)·elxd1168lx9·org_erlang_dyntrace:process_register:·\ | 209 | [17:20:42.561168759]·(+?.?????????)·elxd1168lx9·org_erlang_dyntrace:process_register:·\ |
| 210 | ····{·cpu_id·=·5·},·{·pid·=·"<0.66.0>",·name·=·"sasl_sup",·type·=·"register"·} | 210 | ····{·cpu_id·=·5·},·{·pid·=·"<0.66.0>",·name·=·"sasl_sup",·type·=·"register"·} |
| Offset 127, 29 lines modified | Offset 127, 29 lines modified | ||
| 127 | ··</h1> | 127 | ··</h1> |
| 128 | ····<section·id="moduledoc"> | 128 | ····<section·id="moduledoc"> |
| 129 | <p>Convenience·functions·for·microstate·accounting</p><p>This·module·implements·some·convenience·functions·for·analyzing·microstate | 129 | <p>Convenience·functions·for·microstate·accounting</p><p>This·module·implements·some·convenience·functions·for·analyzing·microstate |
| 130 | accounting·data.·For·details·about·how·to·use·the·basic·API·and·what·the | 130 | accounting·data.·For·details·about·how·to·use·the·basic·API·and·what·the |
| 131 | different·states·represent,·see | 131 | different·states·represent,·see |
| 132 | <a·href="../../../../erts-15.2.3/doc/html/erlang.html#statistics_microstate_accounting"><code·class="inline">erlang:statistics(microstate_accounting)</code></a>.</p><p><a·href=""·id="msacc_print_example"></a></p><p><em>Basic·Scenario</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">msacc</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 132 | <a·href="../../../../erts-15.2.3/doc/html/erlang.html#statistics_microstate_accounting"><code·class="inline">erlang:statistics(microstate_accounting)</code></a>.</p><p><a·href=""·id="msacc_print_example"></a></p><p><em>Basic·Scenario</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">msacc</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="2937083693-1">(</span><span·class="mi">1000</span><span·class="p"·data-group-id="2937083693-1">)</span><span·class="p">.</span><span·class="w"> |
| 133 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 133 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 134 | 2>·</span><span·class="nc">msacc</span><span·class="p">:</span><span·class="nf">print</span><span·class="p"·data-group-id=" | 134 | 2>·</span><span·class="nc">msacc</span><span·class="p">:</span><span·class="nf">print</span><span·class="p"·data-group-id="2937083693-2">(</span><span·class="p"·data-group-id="2937083693-2">)</span><span·class="p">.</span><span·class="w"> |
| 135 | </span><span·class="n">Average</span><span·class="w">·</span><span·class="ss">thread</span><span·class="w">·</span><span·class="ss">real</span><span·class="o">-</span><span·class="ss">time</span><span·class="w">····</span><span·class="p">:</span><span·class="w">·</span><span·class="mi">1000513</span><span·class="w">·</span><span·class="ss">us</span><span·class="w"> | 135 | </span><span·class="n">Average</span><span·class="w">·</span><span·class="ss">thread</span><span·class="w">·</span><span·class="ss">real</span><span·class="o">-</span><span·class="ss">time</span><span·class="w">····</span><span·class="p">:</span><span·class="w">·</span><span·class="mi">1000513</span><span·class="w">·</span><span·class="ss">us</span><span·class="w"> |
| 136 | </span><span·class="n">Accumulated</span><span·class="w">·</span><span·class="ss">system</span><span·class="w">·</span><span·class="ss">run</span><span·class="o">-</span><span·class="ss">time</span><span·class="w">·</span><span·class="p">:</span><span·class="w">····</span><span·class="mi">2213</span><span·class="w">·</span><span·class="ss">us</span><span·class="w"> | 136 | </span><span·class="n">Accumulated</span><span·class="w">·</span><span·class="ss">system</span><span·class="w">·</span><span·class="ss">run</span><span·class="o">-</span><span·class="ss">time</span><span·class="w">·</span><span·class="p">:</span><span·class="w">····</span><span·class="mi">2213</span><span·class="w">·</span><span·class="ss">us</span><span·class="w"> |
| 137 | </span><span·class="n">Average</span><span·class="w">·</span><span·class="ss">scheduler</span><span·class="w">·</span><span·class="ss">run</span><span·class="o">-</span><span·class="ss">time</span><span·class="w">··</span><span·class="p">:</span><span·class="w">····</span><span·class="mi">1076</span><span·class="w">·</span><span·class="ss">us</span><span·class="w"> | 137 | </span><span·class="n">Average</span><span·class="w">·</span><span·class="ss">scheduler</span><span·class="w">·</span><span·class="ss">run</span><span·class="o">-</span><span·class="ss">time</span><span·class="w">··</span><span·class="p">:</span><span·class="w">····</span><span·class="mi">1076</span><span·class="w">·</span><span·class="ss">us</span><span·class="w"> |
| 138 | ········</span><span·class="n">Thread</span><span·class="w">······</span><span·class="ss">aux</span><span·class="w">·</span><span·class="ss">check_io</span><span·class="w">·</span><span·class="ss">emulator</span><span·class="w">·······</span><span·class="ss">gc</span><span·class="w">····</span><span·class="ss">other</span><span·class="w">·····</span><span·class="ss">port</span><span·class="w">····</span><span·class="ss">sleep</span><span·class="w"> | 138 | ········</span><span·class="n">Thread</span><span·class="w">······</span><span·class="ss">aux</span><span·class="w">·</span><span·class="ss">check_io</span><span·class="w">·</span><span·class="ss">emulator</span><span·class="w">·······</span><span·class="ss">gc</span><span·class="w">····</span><span·class="ss">other</span><span·class="w">·····</span><span·class="ss">port</span><span·class="w">····</span><span·class="ss">sleep</span><span·class="w"> |
| 139 | </span><span·class="n">Stats</span><span·class="w">·</span><span·class="ss">per</span><span·class="w">·</span><span·class="nc">thread</span><span·class="p">:</span><span·class="w"> | 139 | </span><span·class="n">Stats</span><span·class="w">·</span><span·class="ss">per</span><span·class="w">·</span><span·class="nc">thread</span><span·class="p">:</span><span·class="w"> |
| 140 | ·····</span><span·class="nf">async</span><span·class="p"·data-group-id=" | 140 | ·····</span><span·class="nf">async</span><span·class="p"·data-group-id="2937083693-3">(</span><span·class="w">·</span><span·class="mi">0</span><span·class="p"·data-group-id="2937083693-3">)</span><span·class="w">····</span><span·class="mf">0.00</span><span·class="c1">%····0.00%····0.00%····0.00%····0.00%····0.00%··100.00%</span><span·class="w"> |
| 141 | ·····</span><span·class="nf">async</span><span·class="p"·data-group-id=" | 141 | ·····</span><span·class="nf">async</span><span·class="p"·data-group-id="2937083693-4">(</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="2937083693-4">)</span><span·class="w">····</span><span·class="mf">0.00</span><span·class="c1">%····0.00%····0.00%····0.00%····0.00%····0.00%··100.00%</span><span·class="w"> |
| 142 | ·······</span><span·class="nf">aux</span><span·class="p"·data-group-id=" | 142 | ·······</span><span·class="nf">aux</span><span·class="p"·data-group-id="2937083693-5">(</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="2937083693-5">)</span><span·class="w">····</span><span·class="mf">0.00</span><span·class="c1">%····0.00%····0.00%····0.00%····0.00%····0.00%···99.99%</span><span·class="w"> |
| 143 | ·</span><span·class="nf">scheduler</span><span·class="p"·data-group-id=" | 143 | ·</span><span·class="nf">scheduler</span><span·class="p"·data-group-id="2937083693-6">(</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="2937083693-6">)</span><span·class="w">····</span><span·class="mf">0.00</span><span·class="c1">%····0.03%····0.13%····0.00%····0.01%····0.00%···99.82%</span><span·class="w"> |
| 144 | ·</span><span·class="nf">scheduler</span><span·class="p"·data-group-id=" | 144 | ·</span><span·class="nf">scheduler</span><span·class="p"·data-group-id="2937083693-7">(</span><span·class="w">·</span><span·class="mi">2</span><span·class="p"·data-group-id="2937083693-7">)</span><span·class="w">····</span><span·class="mf">0.00</span><span·class="c1">%····0.00%····0.00%····0.00%····0.03%····0.00%···99.97%</span><span·class="w"> |
| 145 | </span><span·class="n">Stats</span><span·class="w">·</span><span·class="ss">per</span><span·class="w">·</span><span·class="nc">type</span><span·class="p">:</span><span·class="w"> | 145 | </span><span·class="n">Stats</span><span·class="w">·</span><span·class="ss">per</span><span·class="w">·</span><span·class="nc">type</span><span·class="p">:</span><span·class="w"> |
| 146 | ·········</span><span·class="ss">async</span><span·class="w">····</span><span·class="mf">0.00</span><span·class="c1">%····0.00%····0.00%····0.00%····0.00%····0.00%··100.00%</span><span·class="w"> | 146 | ·········</span><span·class="ss">async</span><span·class="w">····</span><span·class="mf">0.00</span><span·class="c1">%····0.00%····0.00%····0.00%····0.00%····0.00%··100.00%</span><span·class="w"> |
| 147 | ···········</span><span·class="ss">aux</span><span·class="w">····</span><span·class="mf">0.00</span><span·class="c1">%····0.00%····0.00%····0.00%····0.00%····0.00%···99.99%</span><span·class="w"> | 147 | ···········</span><span·class="ss">aux</span><span·class="w">····</span><span·class="mf">0.00</span><span·class="c1">%····0.00%····0.00%····0.00%····0.00%····0.00%···99.99%</span><span·class="w"> |
| 148 | ·····</span><span·class="ss">scheduler</span><span·class="w">····</span><span·class="mf">0.00</span><span·class="c1">%····0.02%····0.06%····0.00%····0.02%····0.00%···99.89%</span><span·class="w"> | 148 | ·····</span><span·class="ss">scheduler</span><span·class="w">····</span><span·class="mf">0.00</span><span·class="c1">%····0.02%····0.06%····0.00%····0.02%····0.00%···99.89%</span><span·class="w"> |
| 149 | </span><span·class="ss">ok</span></code></pre><p>This·first·command·enables·microstate·accounting·for·1000·milliseconds.·See | 149 | </span><span·class="ss">ok</span></code></pre><p>This·first·command·enables·microstate·accounting·for·1000·milliseconds.·See |
| 150 | <a·href="#start/0"><code·class="inline">start/0</code></a>,·<a·href="#stop/0"><code·class="inline">stop/0</code></a>,·<a·href="#reset/0"><code·class="inline">reset/0</code></a>,·and·<a·href="#start/1"><code·class="inline">start/1</code></a>·for·more·details.·The·second | 150 | <a·href="#start/0"><code·class="inline">start/0</code></a>,·<a·href="#stop/0"><code·class="inline">stop/0</code></a>,·<a·href="#reset/0"><code·class="inline">reset/0</code></a>,·and·<a·href="#start/1"><code·class="inline">start/1</code></a>·for·more·details.·The·second |
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| 911 | ······</div> | 911 | ······</div> |
| 912 | <p>Print·the·given·microstate·statistics·values·to·standard·out.·With·many·states | 912 | <p>Print·the·given·microstate·statistics·values·to·standard·out.·With·many·states |
| 913 | this·can·be·verbose.·See·the·top·of·this·reference·manual·for·a·brief | 913 | this·can·be·verbose.·See·the·top·of·this·reference·manual·for·a·brief |
| 914 | description·of·what·the·fields·mean.</p><p>It·is·possible·to·print·more·specific·types·of·statistics·by·first·manipulating | 914 | description·of·what·the·fields·mean.</p><p>It·is·possible·to·print·more·specific·types·of·statistics·by·first·manipulating |
| 915 | the·<code·class="inline">DataOrStats</code>·using·<a·href="#stats/2"><code·class="inline">stats/2</code></a>.·For·instance·if·you·want·to·print·the | 915 | the·<code·class="inline">DataOrStats</code>·using·<a·href="#stats/2"><code·class="inline">stats/2</code></a>.·For·instance·if·you·want·to·print·the |
| 916 | percentage·of·run-time·for·each·thread·you·can·do:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">msacc</span><span·class="p">:</span><span·class="nf">print</span><span·class="p"·data-group-id=" | 916 | percentage·of·run-time·for·each·thread·you·can·do:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">msacc</span><span·class="p">:</span><span·class="nf">print</span><span·class="p"·data-group-id="2407325236-1">(</span><span·class="nc">msacc</span><span·class="p">:</span><span·class="nf">stats</span><span·class="p"·data-group-id="2407325236-2">(</span><span·class="ss">runtime</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">msa[·...·truncated·by·diffoscope;·len:·1323,·SHA:·40753a67b43c40ffcc0d92fbb29c82881b55b090a73ad331816c0f635b67b8d0·...·]-1">)</span><span·class="p">.</span></code></pre><p><em>Options</em></p><ul><li><strong><code·class="inline">system</code></strong>·-·Print·percentage·of·time·spent·in·each·state·out·of·system·time |
| 917 | as·well·as·thread·time.·Default:·false.</li></ul> | 917 | as·well·as·thread·time.·Default:·false.</li></ul> |
| 918 | ··</section> | 918 | ··</section> |
| 919 | </section> | 919 | </section> |
| 920 | <section·class="detail"·id="print/3"> | 920 | <section·class="detail"·id="print/3"> |
| 921 | ··<div·class="detail-header"> | 921 | ··<div·class="detail-header"> |
| 922 | ····<a·href="#print/3"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 922 | ····<a·href="#print/3"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
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| 470 | ······</div> | 470 | ······</div> |
| 471 | <p>Measure·utilization·for·normal·and·dirty-cpu·schedulers·during·<code·class="inline">Seconds</code> | 471 | <p>Measure·utilization·for·normal·and·dirty-cpu·schedulers·during·<code·class="inline">Seconds</code> |
| 472 | seconds,·and·then·return·the·result.</p><p>Will·automatically·first·enable·and·then·disable | 472 | seconds,·and·then·return·the·result.</p><p>Will·automatically·first·enable·and·then·disable |
| 473 | <a·href="../../../../lib/../erts/doc/html/erlang.html#system_flag_scheduler_wall_time"><code·class="inline">scheduler_wall_time</code></a>.</p><p>Calculate·scheduler·utilizations·for·the·time·interval·from·when·<code·class="inline">Sample</code>·was | 473 | <a·href="../../../../lib/../erts/doc/html/erlang.html#system_flag_scheduler_wall_time"><code·class="inline">scheduler_wall_time</code></a>.</p><p>Calculate·scheduler·utilizations·for·the·time·interval·from·when·<code·class="inline">Sample</code>·was |
| 474 | taken·and·"now".·The·same·as·calling | 474 | taken·and·"now".·The·same·as·calling |
| 475 | <code·class="inline">scheduler:utilization(Sample,·scheduler:sample_all())</code>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>This·function·is·<em>not·recommended</em>·as·it's·so·easy·to·get·invalid·results | 475 | <code·class="inline">scheduler:utilization(Sample,·scheduler:sample_all())</code>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>This·function·is·<em>not·recommended</em>·as·it's·so·easy·to·get·invalid·results |
| 476 | without·noticing.·In·particular·do·not·do·this:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nc">scheduler</samp><samp·class="p">:</samp><samp·class="nf">utilization</samp><samp·class="p"·data-group-id=" | 476 | without·noticing.·In·particular·do·not·do·this:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nc">scheduler</samp><samp·class="p">:</samp><samp·class="nf">utilization</samp><samp·class="p"·data-group-id="2842825154-1">(</samp><samp·class="nc">scheduler</samp><samp·class="p">:</samp><samp·class="nf">sample</samp><samp·class="p"·data-group-id="2842825154-2">(</samp><samp·class="p"·data-group-id="2842825154-2">)</samp><samp·class="p"·data-group-id="2842825154-1">)</samp><samp·class="p">.</samp><samp·class="w">·</samp><samp·class="c1">%·DO·NOT·DO·THIS!</samp></code></pre><p>The·above·example·takes·two·samples·in·rapid·succession·and·calculates·the |
| 477 | scheduler·utilization·between·them.·The·resulting·values·will·probably·be·more | 477 | scheduler·utilization·between·them.·The·resulting·values·will·probably·be·more |
| 478 | misleading·than·informative.</p><p>Instead·use·<a·href="#utilization/2"><code·class="inline">scheduler:utilization/2</code></a>·and·call | 478 | misleading·than·informative.</p><p>Instead·use·<a·href="#utilization/2"><code·class="inline">scheduler:utilization/2</code></a>·and·call |
| 479 | <a·href="#get_sample/0"><code·class="inline">get_sample/0</code></a>·to·get·samples·with·some·time·in·between.</p></section> | 479 | <a·href="#get_sample/0"><code·class="inline">get_sample/0</code></a>·to·get·samples·with·some·time·in·between.</p></section> |
| 480 | ··</section> | 480 | ··</section> |
| 481 | </section> | 481 | </section> |
| 482 | <section·class="detail"·id="utilization/2"> | 482 | <section·class="detail"·id="utilization/2"> |
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| 591 | ······</div> | 591 | ······</div> |
| 592 | <p>Measure·utilization·for·normal·and·dirty-cpu·schedulers·during·<code·class="inline">Seconds</code> | 592 | <p>Measure·utilization·for·normal·and·dirty-cpu·schedulers·during·<code·class="inline">Seconds</code> |
| 593 | seconds,·and·then·return·the·result.</p><p>Will·automatically·first·enable·and·then·disable | 593 | seconds,·and·then·return·the·result.</p><p>Will·automatically·first·enable·and·then·disable |
| 594 | <a·href="../../../../erts-15.2.3/doc/html/erlang.html#system_flag_scheduler_wall_time"><code·class="inline">scheduler_wall_time</code></a>.</p><p>Calculate·scheduler·utilizations·for·the·time·interval·from·when·<code·class="inline">Sample</code>·was | 594 | <a·href="../../../../erts-15.2.3/doc/html/erlang.html#system_flag_scheduler_wall_time"><code·class="inline">scheduler_wall_time</code></a>.</p><p>Calculate·scheduler·utilizations·for·the·time·interval·from·when·<code·class="inline">Sample</code>·was |
| 595 | taken·and·"now".·The·same·as·calling | 595 | taken·and·"now".·The·same·as·calling |
| 596 | <code·class="inline">scheduler:utilization(Sample,·scheduler:sample_all())</code>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>This·function·is·<em>not·recommended</em>·as·it's·so·easy·to·get·invalid·results | 596 | <code·class="inline">scheduler:utilization(Sample,·scheduler:sample_all())</code>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>This·function·is·<em>not·recommended</em>·as·it's·so·easy·to·get·invalid·results |
| 597 | without·noticing.·In·particular·do·not·do·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">scheduler</span><span·class="p">:</span><span·class="nf">utilization</span><span·class="p"·data-group-id=" | 597 | without·noticing.·In·particular·do·not·do·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">scheduler</span><span·class="p">:</span><span·class="nf">utilization</span><span·class="p"·data-group-id="5113053895-1">(</span><span·class="nc">scheduler</span><span·class="p">:</span><span·class="nf">sample</span><span·class="p"·data-group-id="5113053895-2">(</span><span·class="p"·data-group-id="5113053895-2">)</span><span·class="p"·data-group-id="5113053895-1">)</span><span·class="p">.</span><span·class="w">·</span><span·class="c1">%·DO·NOT·DO·THIS!</span></code></pre><p>The·above·example·takes·two·samples·in·rapid·succession·and·calculates·the |
| 598 | scheduler·utilization·between·them.·The·resulting·values·will·probably·be·more | 598 | scheduler·utilization·between·them.·The·resulting·values·will·probably·be·more |
| 599 | misleading·than·informative.</p><p>Instead·use·<a·href="#utilization/2"><code·class="inline">scheduler:utilization/2</code></a>·and·call | 599 | misleading·than·informative.</p><p>Instead·use·<a·href="#utilization/2"><code·class="inline">scheduler:utilization/2</code></a>·and·call |
| 600 | <a·href="#get_sample/0"><code·class="inline">get_sample/0</code></a>·to·get·samples·with·some·time·in·between.</p></section> | 600 | <a·href="#get_sample/0"><code·class="inline">get_sample/0</code></a>·to·get·samples·with·some·time·in·between.</p></section> |
| 601 | ··</section> | 601 | ··</section> |
| 602 | </section> | 602 | </section> |
| 603 | <section·class="detail"·id="utilization/2"> | 603 | <section·class="detail"·id="utilization/2"> |
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| 217 | that·is,·if·a·process·using·the·module·spontaneously·switches·to·new·code,·or | 217 | that·is,·if·a·process·using·the·module·spontaneously·switches·to·new·code,·or |
| 218 | if·it·is·"static".·When·doing·an·advanced·update·and·upgrade,·the·new·version | 218 | if·it·is·"static".·When·doing·an·advanced·update·and·upgrade,·the·new·version |
| 219 | of·a·dynamic·module·is·loaded·before·the·process·is·asked·to·change·code.·When | 219 | of·a·dynamic·module·is·loaded·before·the·process·is·asked·to·change·code.·When |
| 220 | downgrading,·the·process·is·asked·to·change·code·before·loading·the·new | 220 | downgrading,·the·process·is·asked·to·change·code·before·loading·the·new |
| 221 | version.·For·static·modules,·the·new·version·is·loaded·before·the·process·is | 221 | version.·For·static·modules,·the·new·version·is·loaded·before·the·process·is |
| 222 | asked·to·change·code,·both·in·the·case·of·upgrading·and·downgrading.·Callback | 222 | asked·to·change·code,·both·in·the·case·of·upgrading·and·downgrading.·Callback |
| 223 | modules·are·dynamic.</p></li></ul><p><code·class="inline">update</code>·with·argument·<code·class="inline">supervisor</code>·is·used·when·changing·the·start | 223 | modules·are·dynamic.</p></li></ul><p><code·class="inline">update</code>·with·argument·<code·class="inline">supervisor</code>·is·used·when·changing·the·start |
| 224 | specification·of·a·supervisor.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 224 | specification·of·a·supervisor.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="1824392334-1">{</span><span·class="nb">load_module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Mod</span><span·class="p"·data-group-id="1824392334-1">}</span><span·class="w"> |
| 225 | </span><span·class="p"·data-group-id=" | 225 | </span><span·class="p"·data-group-id="1824392334-2">{</span><span·class="nb">load_module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Mod</span><span·class="p">,</span><span·class="w">·</span><span·class="n">DepMods</span><span·class="p"·data-group-id="1824392334-2">}</span><span·class="w"> |
| 226 | </span><span·class="p"·data-group-id=" | 226 | </span><span·class="p"·data-group-id="1824392334-3">{</span><span·class="nb">load_module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Mod</span><span·class="p">,</span><span·class="w">·</span><span·class="n">PrePurge</span><span·class="p">,</span><span·class="w">·</spa[·...·truncated·by·diffoscope;·len:·153,·SHA:·d91872d7e3be1fd4fcaf56e1348e0485ca81f575d674a473ba8f04f8202a973c·...·]-3">}</span><span·class="w"> |
| 227 | ··</span><span·class="n">Mod</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id=" | 227 | ··</span><span·class="n">Mod</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="1824392334-4">(</span><span·class="p"·data-group-id="1824392334-4">)</span><span·class="w"> |
| 228 | ··</span><span·class="n">PrePurge</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">PostPurge</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">soft_purge</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">brutal_purge</span><span·class="w"> | 228 | ··</span><span·class="n">PrePurge</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">PostPurge</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">soft_purge</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">brutal_purge</span><span·class="w"> |
| 229 | ··</span><span·class="n">DepMods</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 229 | ··</span><span·class="n">DepMods</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="1824392334-5">[</span><span·class="n">Mod</span><span·class="p"·data-group-id="1824392334-5">]</span></code></pre><p>Simple·code·replacement·of·the·module·<code·class="inline">Mod</code>.</p><p>For·a·description·of·<code·class="inline">PrePurge</code>·and·<code·class="inline">PostPurge</code>,·see·<code·class="inline">update</code>·above.</p><p><code·class="inline">DepMods</code>·defaults·to·<code·class="inline">[]</code>·and·defines·which·other·modules·<code·class="inline">Mod</code>·is·dependent |
| 230 | on.·In·the·<code·class="inline">relup</code>·file,·instructions·for·loading·these·modules·come·before·the | 230 | on.·In·the·<code·class="inline">relup</code>·file,·instructions·for·loading·these·modules·come·before·the |
| 231 | instruction·for·loading·<code·class="inline">Mod</code>·when·upgrading,·and·conversely·when·downgrading.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 231 | instruction·for·loading·<code·class="inline">Mod</code>·when·upgrading,·and·conversely·when·downgrading.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="0902232419-1">{</span><span·class="ss">add_module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Mod</span><span·class="p"·data-group-id="0902232419-1">}</span><span·class="w"> |
| 232 | </span><span·class="p"·data-group-id=" | 232 | </span><span·class="p"·data-group-id="0902232419-2">{</span><span·class="ss">add_module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Mod</span><span·class="p">,</span><span·class="w">·</span><span·class="n">DepMods</span><span·class="p"·data-group-id="0902232419-2">}</span><span·class="w"> |
| 233 | ··</span><span·class="n">Mod</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id=" | 233 | ··</span><span·class="n">Mod</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="0902232419-3">(</span><span·class="p"·data-group-id="0902232419-3">)</span><span·class="w"> |
| 234 | ··</span><span·class="n">DepMods</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 234 | ··</span><span·class="n">DepMods</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="0902232419-4">[</span><span·class="n">Mod</span><span·class="p"·data-group-id="0902232419-4">]</span></code></pre><p>Loads·a·new·module·<code·class="inline">Mod</code>.</p><p><code·class="inline">DepMods</code>·defaults·to·<code·class="inline">[]</code>·and·defines·which·other·modules·<code·class="inline">Mod</code>·is·dependent |
| 235 | on.·In·the·<code·class="inline">relup</code>·file,·instructions·related·to·these·modules·come·before·the | 235 | on.·In·the·<code·class="inline">relup</code>·file,·instructions·related·to·these·modules·come·before·the |
| 236 | instruction·for·loading·<code·class="inline">Mod</code>·when·upgrading,·and·conversely·when·downgrading.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 236 | instruction·for·loading·<code·class="inline">Mod</code>·when·upgrading,·and·conversely·when·downgrading.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="6054619213-1">{</span><span·class="nb">delete_module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Mod</span><span·class="p"·data-group-id="6054619213-1">}</span><span·class="w"> |
| 237 | </span><span·class="p"·data-group-id=" | 237 | </span><span·class="p"·data-group-id="6054619213-2">{</span><span·class="nb">delete_module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Mod</span><span·class="p">,</span><span·class="w">·</span><span·class="n">DepMods</span><span·class="p"·data-group-id="6054619213-2">}</span><span·class="w"> |
| 238 | ··</span><span·class="n">Mod</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id=" | 238 | ··</span><span·class="n">Mod</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="6054619213-3">(</span><span·class="p"·data-group-id="6054619213-3">)</span></code></pre><p>Deletes·a·module·<code·class="inline">Mod</code>·using·the·low-level·instructions·<code·class="inline">remove</code>·and·<code·class="inline">purge</code>.</p><p><code·class="inline">DepMods</code>·defaults·to·<code·class="inline">[]</code>·and·defines·which·other·modules·<code·class="inline">Mod</code>·is·dependent |
| 239 | on.·In·the·<code·class="inline">relup</code>·file,·instructions·related·to·these·modules·come·before·the | 239 | on.·In·the·<code·class="inline">relup</code>·file,·instructions·related·to·these·modules·come·before·the |
| 240 | instruction·for·removing·<code·class="inline">Mod</code>·when·upgrading,·and·conversely·when·downgrading.</p><pre><code·class="text">{add_application,·Application} | 240 | instruction·for·removing·<code·class="inline">Mod</code>·when·upgrading,·and·conversely·when·downgrading.</p><pre><code·class="text">{add_application,·Application} |
| 241 | {add_application,·Application,·Type} | 241 | {add_application,·Application,·Type} |
| 242 | ··Application·=·atom() | 242 | ··Application·=·atom() |
| 243 | ··Type·=·permanent·|·transient·|·temporary·|·load·|·none</code></pre><p>Adding·an·application·means·that·the·modules·defined·by·the·<code·class="inline">modules</code>·key·in·the | 243 | ··Type·=·permanent·|·transient·|·temporary·|·load·|·none</code></pre><p>Adding·an·application·means·that·the·modules·defined·by·the·<code·class="inline">modules</code>·key·in·the |
| 244 | <code·class="inline">.app</code>·file·are·loaded·using·<code·class="inline">add_module</code>.</p><p><code·class="inline">Type</code>·defaults·to·<code·class="inline">permanent</code>·and·specifies·the·start·type·of·the·application. | 244 | <code·class="inline">.app</code>·file·are·loaded·using·<code·class="inline">add_module</code>.</p><p><code·class="inline">Type</code>·defaults·to·<code·class="inline">permanent</code>·and·specifies·the·start·type·of·the·application. |
| 245 | If·<code·class="inline">Type·=·permanent·|·transient·|·temporary</code>,·the·application·is·loaded·and | 245 | If·<code·class="inline">Type·=·permanent·|·transient·|·temporary</code>,·the·application·is·loaded·and |
| Offset 258, 62 lines modified | Offset 258, 62 lines modified | ||
| 258 | application·is·not·loaded·and·not·started,·although·the·code·for·its·modules·is | 258 | application·is·not·loaded·and·not·started,·although·the·code·for·its·modules·is |
| 259 | loaded.</p><h3·id="low-level-instructions"·class="section-heading"> | 259 | loaded.</p><h3·id="low-level-instructions"·class="section-heading"> |
| 260 | ··<a·href="#low-level-instructions"·class="hover-link"> | 260 | ··<a·href="#low-level-instructions"·class="hover-link"> |
| 261 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 261 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 262 | ··</a> | 262 | ··</a> |
| 263 | ··<span·class="text">Low-Level·Instructions</span> | 263 | ··<span·class="text">Low-Level·Instructions</span> |
| 264 | </h3> | 264 | </h3> |
| 265 | <pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 265 | <pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="4801974650-1">{</span><span·class="ss">load_object_code</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4801974650-2">{</span><span·class="n">App</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Vsn[·...·truncated·by·diffoscope;·len:·281,·SHA:·d1a99435b95e5fde8f4963b578f443ff8b7d93093591afc58c5228ea671a6321·...·]-1">}</span><span·class="w"> |
| 266 | ··</span><span·class="n">App</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Mod</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id=" | 266 | ··</span><span·class="n">App</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Mod</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="4801974650-4">(</span><span·class="p"·data-group-id="4801974650-4">)</span><span·class="w"> |
| 267 | ··</span><span·class="n">Vsn</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">string</span><span·class="p"·data-group-id=" | 267 | ··</span><span·class="n">Vsn</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">string</span><span·class="p"·data-group-id="4801974650-5">(</span><span·class="p"·data-group-id="4801974650-5">)</span></code></pre><p>Reads·each·<code·class="inline">Mod</code>·from·directory·<code·class="inline">App-Vsn/ebin</code>·as·a·binary.·It·does·not·load·the |
| 268 | modules.·The·instruction·is·to·be·placed·first·in·the·script·to·read·all·new | 268 | modules.·The·instruction·is·to·be·placed·first·in·the·script·to·read·all·new |
| 269 | code·from·the·file·to·make·the·suspend-load-resume·cycle·less·time-consuming.</p><pre><code·class="text">point_of_no_return</code></pre><p>If·a·crash·occurs·after·this·instruction,·the·system·cannot·recover·and·is | 269 | code·from·the·file·to·make·the·suspend-load-resume·cycle·less·time-consuming.</p><pre><code·class="text">point_of_no_return</code></pre><p>If·a·crash·occurs·after·this·instruction,·the·system·cannot·recover·and·is |
| 270 | restarted·from·the·old·release·version.·The·instruction·must·only·occur·once·in | 270 | restarted·from·the·old·release·version.·The·instruction·must·only·occur·once·in |
| 271 | a·script.·It·is·to·be·placed·after·all·<code·class="inline">load_object_code</code>·instructions.</p><pre><code·class="text">{load,·{Mod,·PrePurge,·PostPurge}} | 271 | a·script.·It·is·to·be·placed·after·all·<code·class="inline">load_object_code</code>·instructions.</p><pre><code·class="text">{load,·{Mod,·PrePurge,·PostPurge}} |
| 272 | ··Mod·=·atom() | 272 | ··Mod·=·atom() |
| 273 | ··PrePurge·=·PostPurge·=·soft_purge·|·brutal_purge</code></pre><p>Before·this·instruction·occurs,·<code·class="inline">Mod</code>·must·have·been·loaded·using | 273 | ··PrePurge·=·PostPurge·=·soft_purge·|·brutal_purge</code></pre><p>Before·this·instruction·occurs,·<code·class="inline">Mod</code>·must·have·been·loaded·using |
| 274 | <code·class="inline">load_object_code</code>.·This·instruction·loads·the·module.·<code·class="inline">PrePurge</code>·is·ignored. | 274 | <code·class="inline">load_object_code</code>.·This·instruction·loads·the·module.·<code·class="inline">PrePurge</code>·is·ignored. |
| 275 | For·a·description·of·<code·class="inline">PostPurge</code>,·see·the·high-level·instruction·<code·class="inline">update</code> | 275 | For·a·description·of·<code·class="inline">PostPurge</code>,·see·the·high-level·instruction·<code·class="inline">update</code> |
| 276 | earlier.</p><pre><code·class="text">{remove,·{Mod,·PrePurge,·PostPurge}} | 276 | earlier.</p><pre><code·class="text">{remove,·{Mod,·PrePurge,·PostPurge}} |
| 277 | ··Mod·=·atom() | 277 | ··Mod·=·atom() |
| 278 | ··PrePurge·=·PostPurge·=·soft_purge·|·brutal_purge</code></pre><p>Makes·the·current·version·of·<code·class="inline">Mod</code>·old.·<code·class="inline">PrePurge</code>·is·ignored.·For·a·description | 278 | ··PrePurge·=·PostPurge·=·soft_purge·|·brutal_purge</code></pre><p>Makes·the·current·version·of·<code·class="inline">Mod</code>·old.·<code·class="inline">PrePurge</code>·is·ignored.·For·a·description |
| 279 | of·<code·class="inline">PostPurge</code>,·see·the·high-level·instruction·<code·class="inline">update</code>·earlier.</p><pre><code·class="text">{purge,·[Mod]} | 279 | of·<code·class="inline">PostPurge</code>,·see·the·high-level·instruction·<code·class="inline">update</code>·earlier.</p><pre><code·class="text">{purge,·[Mod]} |
| 280 | ··Mod·=·atom()</code></pre><p>Purges·each·module·<code·class="inline">Mod</code>,·that·is,·removes·the·old·code.·Notice·that·any·process | 280 | ··Mod·=·atom()</code></pre><p>Purges·each·module·<code·class="inline">Mod</code>,·that·is,·removes·the·old·code.·Notice·that·any·process |
| 281 | executing·purged·code·is·killed.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 281 | executing·purged·code·is·killed.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="3686714139-1">{</span><span·class="ss">suspend</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3686714139-2">[</span><span·class="n">Mod</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><spa[·...·truncated·by·diffoscope;·len:·300,·SHA:·e72f1a1373301f61dabfb848e53426d974b78adb37fbe8991ecfda148d8bfb94·...·]-1">}</span><span·class="w"> |
| 282 | ··</span><span·class="n">Mod</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id=" | 282 | ··</span><span·class="n">Mod</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="3686714139-4">(</span><span·class="p"·data-group-id="3686714139-4">)</span><span·class="w"> |
| 283 | ··</span><span·class="n">Timeout</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">int</span><span·class="p"·data-group-id=" | 283 | ··</span><span·class="n">Timeout</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">int</span><span·class="p"·data-group-id="3686714139-5">(</span><span·class="p"·data-group-id="3686714139-5">)</span><span·class="o">></span><span·class="mi">0</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">default</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">infinity</span></code></pre><p>Tries·to·suspend·all·processes·using·a·module·<code·class="inline">Mod</code>.·If·a·process·does·not |
| 284 | respond,·it·is·ignored.·This·can·cause·the·process·to·die,·either·because·it | 284 | respond,·it·is·ignored.·This·can·cause·the·process·to·die,·either·because·it |
| 285 | crashes·when·it·spontaneously·switches·to·new·code,·or·as·a·result·of·a·purge | 285 | crashes·when·it·spontaneously·switches·to·new·code,·or·as·a·result·of·a·purge |
| 286 | operation.·If·no·<code·class="inline">Timeout</code>·is·specified·or·<code·class="inline">default</code>·is·specified,·the·default | 286 | operation.·If·no·<code·class="inline">Timeout</code>·is·specified·or·<code·class="inline">default</code>·is·specified,·the·default |
| 287 | value·for·<a·href="../../../../lib/stdlib-6.2.1/doc/html/sys.html#suspend/1"><code·class="inline">sys:suspend</code></a>·is·used.</p><pre><code·class="text">{resume,·[Mod]} | 287 | value·for·<a·href="../../../../lib/stdlib-6.2.1/doc/html/sys.html#suspend/1"><code·class="inline">sys:suspend</code></a>·is·used.</p><pre><code·class="text">{resume,·[Mod]} |
| 288 | ··Mod·=·atom()</code></pre><p>Resumes·all·suspended·processes·using·a·module·<code·class="inline">Mod</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 288 | ··Mod·=·atom()</code></pre><p>Resumes·all·suspended·processes·using·a·module·<code·class="inline">Mod</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8721714447-1">{</span><span·class="ss">code_change</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8721714447-2">[</span><span·class="p"·data-group-id="8721714447-3">{</span><span·class="n">Mod</span><span·class="p">,</[·...·truncated·by·diffoscope;·len:·204,·SHA:·9ab2d2fb82fd6c0719b0a8ce2cb3ac537b88daf3a09c9bcd9af000f72cc6aba6·...·]-1">}</span><span·class="w"> |
| 289 | </span><span·class="p"·data-group-id=" | 289 | </span><span·class="p"·data-group-id="8721714447-4">{</span><span·class="ss">code_change</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Mode</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8721714447-5">[</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·279,·SHA:·bce37122b22fc5a1b0bfa29ab722bb7e61421cc0e6217e6348738b09fdcc56bb·...·]-4">}</span><span·class="w"> |
| 290 | ··</span><span·class="n">Mod</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id=" | 290 | ··</span><span·class="n">Mod</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="8721714447-7">(</span><span·class="p"·data-group-id="8721714447-7">)</span><span·class="w"> |
| 291 | ··</span><span·class="n">Mode</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">up</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">down</span><span·class="w"> | 291 | ··</span><span·class="n">Mode</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">up</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">down</span><span·class="w"> |
| 292 | ··</span><span·class="n">Extra</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id=" | 292 | ··</span><span·class="n">Extra</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id="8721714447-8">(</span><span·class="p"·data-group-id="8721714447-8">)</span></code></pre><p><code·class="inline">Mode</code>·defaults·to·<code·class="inline">up</code>·and·specifies·if·it·is·an·upgrade·or·downgrade.·This |
| 293 | instruction·sends·a·<code·class="inline">code_change</code>·system·message·to·all·processes·using·a·module | 293 | instruction·sends·a·<code·class="inline">code_change</code>·system·message·to·all·processes·using·a·module |
| 294 | <code·class="inline">Mod</code>·by·calling·function·<a·href="../../../../lib/stdlib-6.2.1/doc/html/sys.html#change_code/4"><code·class="inline">sys:change_code</code></a>,·passing·term | 294 | <code·class="inline">Mod</code>·by·calling·function·<a·href="../../../../lib/stdlib-6.2.1/doc/html/sys.html#change_code/4"><code·class="inline">sys:change_code</code></a>,·passing·term |
| 295 | <code·class="inline">Extra</code>·as·argument.</p><pre><code·class="text">{stop,·[Mod]} | 295 | <code·class="inline">Extra</code>·as·argument.</p><pre><code·class="text">{stop,·[Mod]} |
| 296 | ··Mod·=·atom()</code></pre><p>Stops·all·processes·using·a·module·<code·class="inline">Mod</code>·by·calling | 296 | ··Mod·=·atom()</code></pre><p>Stops·all·processes·using·a·module·<code·class="inline">Mod</code>·by·calling |
| 297 | <a·href="../../../../lib/stdlib-6.2.1/doc/html/supervisor.html#terminate_child/2"><code·class="inline">supervisor:terminate_child/2</code></a>.·This·instruction·is·useful·when·the·simplest·way | 297 | <a·href="../../../../lib/stdlib-6.2.1/doc/html/supervisor.html#terminate_child/2"><code·class="inline">supervisor:terminate_child/2</code></a>.·This·instruction·is·useful·when·the·simplest·way |
| 298 | to·change·code·is·to·stop·and·restart·the·processes·that·run·the·code.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 298 | to·change·code·is·to·stop·and·restart·the·processes·that·run·the·code.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="7348757492-1">{</span><span·class="ss">start</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7348757492-2">[</span><span·class="n">Mod</span><span·class="p"·data-group-id="7348757492-2">]</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·16,·SHA:·83396dd258cdafe932c8048598851b670df7d6b1e74e8e5d3d3bf7f16a0a9fd1·...·]-1">}</span><span·class="w"> |
| 299 | ··</span><span·class="n">Mod</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id=" | 299 | ··</span><span·class="n">Mod</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="7348757492-3">(</span><span·class="p"·data-group-id="7348757492-3">)</span></code></pre><p>Starts·all·stopped·processes·using·a·module·<code·class="inline">Mod</code>·by·calling |
| 300 | <a·href="../../../../lib/stdlib-6.2.1/doc/html/supervisor.html#restart_child/2"><code·class="inline">supervisor:restart_child/2</code></a>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 300 | <a·href="../../../../lib/stdlib-6.2.1/doc/html/supervisor.html#restart_child/2"><code·class="inline">supervisor:restart_child/2</code></a>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="5234043073-1">{</span><span·class="ss">sync_nodes</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Id</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5234043073-2">[</span><span·class="n">Node</span[·...·truncated·by·diffoscope;·len:·95,·SHA:·f32a380a9532130ab4595f5e0dca82022a8aaa04d349da435a8bcdbafc17196f·...·]-1">}</span><span·class="w"> |
| 301 | </span><span·class="p"·data-group-id=" | 301 | </span><span·class="p"·data-group-id="5234043073-3">{</span><span·class="ss">sync_nodes</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Id</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5234043073-4">{</span><span·class="n">M</span><s[·...·truncated·by·diffoscope;·len:·236,·SHA:·8f2ce07a7a8075b387fcd06afa7683b89a9d315dc430d36e64d8aea7bb04925d·...·]-3">}</span><span·class="w"> |
| 302 | ··</span><span·class="n">Id</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id=" | 302 | ··</span><span·class="n">Id</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id="5234043073-5">(</span><span·class="p"·data-group-id="5234043073-5">)</span><span·class="w"> |
| 303 | ··</span><span·class="n">Node</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">node</span><span·class="p"·data-group-id=" | 303 | ··</span><span·class="n">Node</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">node</span><span·class="p"·data-group-id="5234043073-6">(</span><span·class="p"·data-group-id="5234043073-6">)</span><span·class="w"> |
| 304 | ··</span><span·class="n">M</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id=" | 304 | ··</span><span·class="n">M</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="5234043073-7">(</span><span·class="p"·data-group-id="5234043073-7">)</span><span·class="w"> |
| 305 | ··</span><span·class="n">A</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 305 | ··</span><span·class="n">A</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="5234043073-8">[</span><span·class="nf">term</span><span·class="p"·data-group-id="5234043073-9">(</span><span·class="p"·data-group-id="5234043073-9">)</span><span·class="p"·data-group-id="5234043073-8">]</span></code></pre><p><a·href="../../../../erts-15.2.3/doc/html/erlang.html#apply/3"><code·class="inline">apply(M,·F,·A)</code></a>·must·return·a·list·of·nodes.</p><p>This·instruction·synchronizes·the·release·installation·with·other·nodes.·Each |
| 306 | <code·class="inline">Node</code>·must·evaluate·this·command·with·the·same·<code·class="inline">Id</code>.·The·local·node·waits·for | 306 | <code·class="inline">Node</code>·must·evaluate·this·command·with·the·same·<code·class="inline">Id</code>.·The·local·node·waits·for |
| 307 | all·other·nodes·to·evaluate·the·instruction·before·execution·continues.·If·a | 307 | all·other·nodes·to·evaluate·the·instruction·before·execution·continues.·If·a |
| 308 | node·goes·down,·it·is·considered·to·be·an·unrecoverable·error,·and·the·local | 308 | node·goes·down,·it·is·considered·to·be·an·unrecoverable·error,·and·the·local |
| 309 | node·is·restarted·from·the·old·release.·There·is·no·time-out·for·this | 309 | node·is·restarted·from·the·old·release.·There·is·no·time-out·for·this |
| 310 | instruction,·which·means·that·it·can·hang·forever.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="7 | 310 | instruction,·which·means·that·it·can·hang·forever.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="7109274368-1">{</span><span·class="nb">apply</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7109274368-2">{</span><span·class="n">M</span><span·class="p">,</span><span·class="w">·</span><span·class="n">F</span><span·cla[·...·truncated·by·diffoscope;·len:·157,·SHA:·792df495d03a734ab2ed549c56e89d1c59cbe0297db32119248eb594eb19e7b7·...·]-1">}</span><span·class="w"> |
| 311 | ··</span><span·class="n">M</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="7 | 311 | ··</span><span·class="n">M</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">atom</span><span·class="p"·data-group-id="7109274368-3">(</span><span·class="p"·data-group-id="7109274368-3">)</span><span·class="w"> |
| 312 | ··</span><span·class="n">A</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7 | 312 | ··</span><span·class="n">A</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7109274368-4">[</span><span·class="nf">term</span><span·class="p"·data-group-id="7109274368-5">(</span><span·class="p"·data-group-id="7109274368-5">)</span><span·class="p"·data-group-id="7109274368-4">]</span></code></pre><p>Evaluates·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#apply/3"><code·class="inline">apply(M,·F,·A)</code></a>.</p><p>If·the·instruction·appears·before·instruction·<code·class="inline">point_of_no_return</code>,·a·failure·is |
| 313 | caught.·<a·href="release_handler.html#install_release/1"><code·class="inline">release_handler:install_release/1</code></a>·then·returns | 313 | caught.·<a·href="release_handler.html#install_release/1"><code·class="inline">release_handler:install_release/1</code></a>·then·returns |
| 314 | <code·class="inline">{error,{'EXIT',Reason}}</code>,·unless·<code·class="inline">{error,Error}</code>·is·thrown·or·returned.·Then·it | 314 | <code·class="inline">{error,{'EXIT',Reason}}</code>,·unless·<code·class="inline">{error,Error}</code>·is·thrown·or·returned.·Then·it |
| 315 | returns·<code·class="inline">{error,Error}</code>.</p><p>If·the·instruction·appears·after·instruction·<code·class="inline">point_of_no_return</code>·and·the | 315 | returns·<code·class="inline">{error,Error}</code>.</p><p>If·the·instruction·appears·after·instruction·<code·class="inline">point_of_no_return</code>·and·the |
| 316 | function·call·fails,·the·system·is·restarted.</p><pre><code·class="text">restart_new_emulator</code></pre><p>This·instruction·is·used·when·the·application·ERTS,·Kernel,·STDLIB,·or·SASL·is | 316 | function·call·fails,·the·system·is·restarted.</p><pre><code·class="text">restart_new_emulator</code></pre><p>This·instruction·is·used·when·the·application·ERTS,·Kernel,·STDLIB,·or·SASL·is |
| 317 | upgraded.·It·shuts·down·the·current·emulator·and·starts·a·new·one.·All·processes | 317 | upgraded.·It·shuts·down·the·current·emulator·and·starts·a·new·one.·All·processes |
| 318 | are·terminated·gracefully,·and·the·new·version·of·ERTS,·Kernel,·STDLIB,·and·SASL | 318 | are·terminated·gracefully,·and·the·new·version·of·ERTS,·Kernel,·STDLIB,·and·SASL |
| 319 | are·used·when·the·emulator·restarts.·Only·one·<code·class="inline">restart_new_emulator</code>·instruction | 319 | are·used·when·the·emulator·restarts.·Only·one·<code·class="inline">restart_new_emulator</code>·instruction |
| Offset 304, 50 lines modified | Offset 304, 50 lines modified | ||
| 304 | ········ok</code></pre><h3·id="show-reports"·class="section-heading"> | 304 | ········ok</code></pre><h3·id="show-reports"·class="section-heading"> |
| 305 | ··<a·href="#show-reports"·class="hover-link"> | 305 | ··<a·href="#show-reports"·class="hover-link"> |
| 306 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 306 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 307 | ··</a> | 307 | ··</a> |
| 308 | ··<span·class="text">Show·Reports</span> | 308 | ··<span·class="text">Show·Reports</span> |
| 309 | </h3> | 309 | </h3> |
| 310 | <p>Use·function·<a·href="rb.html#show/1"><code·class="inline">rb:show(Number)</code></a>·to·show·details·of·a·specific | 310 | <p>Use·function·<a·href="rb.html#show/1"><code·class="inline">rb:show(Number)</code></a>·to·show·details·of·a·specific |
| 311 | report:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">7>·</span><span·class="nc">rb</span><span·class="p">:</span><span·class="nf">show</span><span·class="p"·data-group-id=" | 311 | report:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">7>·</span><span·class="nc">rb</span><span·class="p">:</span><span·class="nf">show</span><span·class="p"·data-group-id="2489904251-1">(</span><span·class="mi">4</span><span·class="p"·data-group-id="2489904251-1">)</span><span·class="p">.</span><span·class="w"> |
| 312 | </span><span·class="n">PROGRESS</span><span·class="w">·</span><span·class="n">REPORT</span><span·class="w">··</span><span·class="o"><</span><span·class="mf">0.20</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">···································</span><span·class="mi">1996</span><span·class="o">-</span><span·class="mi">10</span><span·class="o">-</span><span·class="mi">16</span><span·class="w">·</span><span·class="mi">16</span><span·class="p">:</span><span·class="mi">16</span><span·class="p">:</span><span·class="mi">36</span><span·class="w"> | 312 | </span><span·class="n">PROGRESS</span><span·class="w">·</span><span·class="n">REPORT</span><span·class="w">··</span><span·class="o"><</span><span·class="mf">0.20</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">···································</span><span·class="mi">1996</span><span·class="o">-</span><span·class="mi">10</span><span·class="o">-</span><span·class="mi">16</span><span·class="w">·</span><span·class="mi">16</span><span·class="p">:</span><span·class="mi">16</span><span·class="p">:</span><span·class="mi">36</span><span·class="w"> |
| 313 | </span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">=</span><span·class="w"> | 313 | </span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">=</span><span·class="w"> |
| 314 | </span><span·class="ss">supervisor</span><span·class="w">·····················································</span><span·class="p"·data-group-id=" | 314 | </span><span·class="ss">supervisor</span><span·class="w">·····················································</span><span·class="p"·data-group-id="2489904251-2">{</span><span·class="ss">local</span><span·class="p">,</span><span·class="ss">sasl_sup</span><span·class="p"·data-group-id="2489904251-2">}</span><span·class="w"> |
| 315 | </span><span·class="ss">started</span><span·class="w"> | 315 | </span><span·class="ss">started</span><span·class="w"> |
| 316 | </span><span·class="p"·data-group-id=" | 316 | </span><span·class="p"·data-group-id="2489904251-3">[</span><span·class="p"·data-group-id="2489904251-4">{</span><span·class="ss">pid</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.24</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span[·...·truncated·by·diffoscope;·len:·42,·SHA:·9eabea292c06e875027f2a48384943bafea9e9d18f0a272de378059c46f127f1·...·]-4">}</span><span·class="p">,</span><span·class="w"> |
| 317 | </span><span·class="p"·data-group-id=" | 317 | </span><span·class="p"·data-group-id="2489904251-5">{</span><span·class="ss">name</span><span·class="p">,</span><span·class="ss">release_handler</span><span·class="p"·data-group-id="2489904251-5">}</span><span·class="p">,</span><span·class="w"> |
| 318 | </span><span·class="p"·data-group-id=" | 318 | </span><span·class="p"·data-group-id="2489904251-6">{</span><span·class="ss">mfa</span><span·class="p">,</span><span·class="p"·data-group-id="2489904251-7">{</span><span·class="ss">release_handler</span><span·class="p">,</span><span·class="ss">start_link</span><span·class="p">,</span><span·cla[·...·truncated·by·diffoscope;·len:·191,·SHA:·87c7cd816680ea014ac5c974b086e023ddaefc26706443d128fafd8c58164e33·...·]-6">}</span><span·class="p">,</span><span·class="w"> |
| 319 | </span><span·class="p"·data-group-id=" | 319 | </span><span·class="p"·data-group-id="2489904251-9">{</span><span·class="ss">restart_type</span><span·class="p">,</span><span·class="ss">permanent</span><span·class="p"·data-group-id="2489904251-9">}</span><span·class="p">,</span><span·class="w"> |
| 320 | </span><span·class="p"·data-group-id=" | 320 | </span><span·class="p"·data-group-id="2489904251-10">{</span><span·class="ss">shutdown</span><span·class="p">,</span><span·class="mi">2000</span><span·class="p"·data-group-id="2489904251-10">}</span><span·class="p">,</span><span·class="w"> |
| 321 | </span><span·class="p"·data-group-id=" | 321 | </span><span·class="p"·data-group-id="2489904251-11">{</span><span·class="ss">child_type</span><span·class="p">,</span><span·class="ss">worker</span><span·class="p"·data-group-id="2489904251-11">}</span><span·class="p"·data-group-id="2489904251-3">]</span><span·class="w"> |
| 322 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 322 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 323 | 8>·</span><span·class="nc">rb</span><span·class="p">:</span><span·class="nf">show</span><span·class="p"·data-group-id=" | 323 | 8>·</span><span·class="nc">rb</span><span·class="p">:</span><span·class="nf">show</span><span·class="p"·data-group-id="2489904251-12">(</span><span·class="mi">9</span><span·class="p"·data-group-id="2489904251-12">)</span><span·class="p">.</span><span·class="w"> |
| 324 | </span><span·class="n">CRASH</span><span·class="w">·</span><span·class="n">REPORT</span><span·class="w">··</span><span·class="o"><</span><span·class="mf">0.24</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">······································</span><span·class="mi">1996</span><span·class="o">-</span><span·class="mi">10</span><span·class="o">-</span><span·class="mi">16</span><span·class="w">·</span><span·class="mi">16</span><span·class="p">:</span><span·class="mi">16</span><span·class="p">:</span><span·class="mi">21</span><span·class="w"> | 324 | </span><span·class="n">CRASH</span><span·class="w">·</span><span·class="n">REPORT</span><span·class="w">··</span><span·class="o"><</span><span·class="mf">0.24</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">······································</span><span·class="mi">1996</span><span·class="o">-</span><span·class="mi">10</span><span·class="o">-</span><span·class="mi">16</span><span·class="w">·</span><span·class="mi">16</span><span·class="p">:</span><span·class="mi">16</span><span·class="p">:</span><span·class="mi">21</span><span·class="w"> |
| 325 | </span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">=</span><span·class="w"> | 325 | </span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">==</span><span·class="o">=</span><span·class="w"> |
| 326 | </span><span·class="n">Crashing</span><span·class="w">·</span><span·class="ss">process</span><span·class="w"> | 326 | </span><span·class="n">Crashing</span><span·class="w">·</span><span·class="ss">process</span><span·class="w"> |
| 327 | </span><span·class="ss">pid</span><span·class="w">·································································</span><span·class="o"><</span><span·class="mf">0.24</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w"> | 327 | </span><span·class="ss">pid</span><span·class="w">·································································</span><span·class="o"><</span><span·class="mf">0.24</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w"> |
| 328 | </span><span·class="ss">registered_name</span><span·class="w">··············································</span><span·class="ss">release_handler</span><span·class="w"> | 328 | </span><span·class="ss">registered_name</span><span·class="w">··············································</span><span·class="ss">release_handler</span><span·class="w"> |
| 329 | </span><span·class="ss">error_info</span><span·class="w">·····························</span><span·class="p"·data-group-id=" | 329 | </span><span·class="ss">error_info</span><span·class="w">·····························</span><span·class="p"·data-group-id="2489904251-13">{</span><span·class="ss">undef</span><span·class="p">,</span><span·class="p"·data-group-id="2489904251-14">{</span><span·class="ss">release_handler</span><span·class="p">,</span><span·class="ss">mbj_func</span><span·class="p">,</span><span·c[·...·truncated·by·diffoscope;·len:·196,·SHA:·d0d711795194737623d311db58c4bfef877dabcf9b5edb725c5f40cd84e32e58·...·]-13">}</span><span·class="w"> |
| 330 | </span><span·class="ss">initial_call</span><span·class="w"> | 330 | </span><span·class="ss">initial_call</span><span·class="w"> |
| 331 | </span><span·class="p"·data-group-id=" | 331 | </span><span·class="p"·data-group-id="2489904251-16">{</span><span·class="ss">gen</span><span·class="p">,</span><span·class="ss">init_it</span><span·class="p">,</span><span·class="w"> |
| 332 | </span><span·class="p"·data-group-id=" | 332 | </span><span·class="p"·data-group-id="2489904251-17">[</span><span·class="ss">gen_server</span><span·class="p">,</span><span·class="w"> |
| 333 | </span><span·class="o"><</span><span·class="mf">0.20</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="w"> | 333 | </span><span·class="o"><</span><span·class="mf">0.20</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="w"> |
| 334 | </span><span·class="o"><</span><span·class="mf">0.20</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="w"> | 334 | </span><span·class="o"><</span><span·class="mf">0.20</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="w"> |
| 335 | </span><span·class="p"·data-group-id=" | 335 | </span><span·class="p"·data-group-id="2489904251-18">{</span><span·class="ss">erlang</span><span·class="p">,</span><span·class="nb">register</span><span·class="p"·data-group-id="2489904251-18">}</span><span·class="p">,</span><span·class="w"> |
| 336 | </span><span·class="ss">release_handler</span><span·class="p">,</span><span·class="w"> | 336 | </span><span·class="ss">release_handler</span><span·class="p">,</span><span·class="w"> |
| 337 | </span><span·class="ss">release_handler</span><span·class="p">,</span><span·class="w"> | 337 | </span><span·class="ss">release_handler</span><span·class="p">,</span><span·class="w"> |
| 338 | </span><span·class="p"·data-group-id=" | 338 | </span><span·class="p"·data-group-id="2489904251-19">[</span><span·class="p"·data-group-id="2489904251-19">]</span><span·class="p">,</span><span·class="w"> |
| 339 | </span><span·class="p"·data-group-id=" | 339 | </span><span·class="p"·data-group-id="2489904251-20">[</span><span·class="p"·data-group-id="2489904251-20">]</span><span·class="p"·data-group-id="2489904251-17">]</span><span·class="p"·data-group-id="2489904251-16">}</span><span·class="w"> |
| 340 | </span><span·class="ss">ancestors</span><span·class="w">················································</span><span·class="p"·data-group-id=" | 340 | </span><span·class="ss">ancestors</span><span·class="w">················································</span><span·class="p"·data-group-id="2489904251-21">[</span><span·class="ss">sasl_sup</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.18</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="2489904251-21">]</span><span·class="w"> |
| 341 | </span><span·class="ss">messages</span><span·class="w">··································································</span><span·class="p"·data-group-id=" | 341 | </span><span·class="ss">messages</span><span·class="w">··································································</span><span·class="p"·data-group-id="2489904251-22">[</span><span·class="p"·data-group-id="2489904251-22">]</span><span·class="w"> |
| 342 | </span><span·class="ss">links</span><span·class="w">····················································</span><span·class="p"·data-group-id=" | 342 | </span><span·class="ss">links</span><span·class="w">····················································</span><span·class="p"·data-group-id="2489904251-23">[</span><span·class="o"><</span><span·class="mf">0.23</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.20</span><span·class="p">.</span[·...·truncated·by·diffoscope;·len:·94,·SHA:·f74d2ae24a2809f9627f19ab51e164d309858877c1adc925c297152351b487ac·...·]-23">]</span><span·class="w"> |
| 343 | </span><span·class="ss">dictionary</span><span·class="w">································································</span><span·class="p"·data-group-id=" | 343 | </span><span·class="ss">dictionary</span><span·class="w">································································</span><span·class="p"·data-group-id="2489904251-24">[</span><span·class="p"·data-group-id="2489904251-24">]</span><span·class="w"> |
| 344 | </span><span·class="ss">trap_exit</span><span·class="w">······························································</span><span·class="ss">false</span><span·class="w"> | 344 | </span><span·class="ss">trap_exit</span><span·class="w">······························································</span><span·class="ss">false</span><span·class="w"> |
| 345 | </span><span·class="ss">status</span><span·class="w">·······························································</span><span·class="ss">running</span><span·class="w"> | 345 | </span><span·class="ss">status</span><span·class="w">·······························································</span><span·class="ss">running</span><span·class="w"> |
| 346 | </span><span·class="ss">heap_size</span><span·class="w">································································</span><span·class="mi">610</span><span·class="w"> | 346 | </span><span·class="ss">heap_size</span><span·class="w">································································</span><span·class="mi">610</span><span·class="w"> |
| 347 | </span><span·class="ss">stack_size</span><span·class="w">·······························································</span><span·class="mi">142</span><span·class="w"> | 347 | </span><span·class="ss">stack_size</span><span·class="w">·······························································</span><span·class="mi">142</span><span·class="w"> |
| 348 | </span><span·class="ss">reductions</span><span·class="w">································································</span><span·class="mi">54</span><span·class="w"> | 348 | </span><span·class="ss">reductions</span><span·class="w">································································</span><span·class="mi">54</span><span·class="w"> |
| 349 | </span><span·class="ss">ok</span></code></pre><h3·id="search-reports"·class="section-heading"> | 349 | </span><span·class="ss">ok</span></code></pre><h3·id="search-reports"·class="section-heading"> |
| Offset 136, 19 lines modified | Offset 136, 19 lines modified | ||
| 136 | (<code·class="inline">.script</code>,·<code·class="inline">.boot</code>)·and·release·upgrade·files·(<code·class="inline">relup</code>).</p><h2·id="file-syntax"·class="section-heading"> | 136 | (<code·class="inline">.script</code>,·<code·class="inline">.boot</code>)·and·release·upgrade·files·(<code·class="inline">relup</code>).</p><h2·id="file-syntax"·class="section-heading"> |
| 137 | ··<a·href="#file-syntax"·class="hover-link"> | 137 | ··<a·href="#file-syntax"·class="hover-link"> |
| 138 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 138 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 139 | ··</a> | 139 | ··</a> |
| 140 | ··<span·class="text">File·Syntax</span> | 140 | ··<span·class="text">File·Syntax</span> |
| 141 | </h2> | 141 | </h2> |
| 142 | <p>The·release·resource·file·is·to·be·called·<code·class="inline">Name.rel</code>.</p><p>The·<code·class="inline">.rel</code>·file·contains·one·single·Erlang·term,·which·is·called·a·<em>release | 142 | <p>The·release·resource·file·is·to·be·called·<code·class="inline">Name.rel</code>.</p><p>The·<code·class="inline">.rel</code>·file·contains·one·single·Erlang·term,·which·is·called·a·<em>release |
| 143 | specification</em>.·The·file·has·the·following·syntax:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 143 | specification</em>.·The·file·has·the·following·syntax:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8012273119-1">{</span><span·class="ss">release</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8012273119-2">{</span><span·class="n">RelName</span><span·class="p">,</span><span·class="n">Vsn</span><span·class="p"·data-g[·...·truncated·by·diffoscope;·len:·276,·SHA:·b6873acca2e4ddc4043b643162ad03380c1ea9932098a96ade058e44dcbbb55b·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 144 | ··</span><span·class="p"·data-group-id=" | 144 | ··</span><span·class="p"·data-group-id="8012273119-4">[</span><span·class="p"·data-group-id="8012273119-5">{</span><span·class="n">Application</span><span·class="p">,</span><span·class="w">·</span><span·class="n">AppVsn</span><span·class="p"·data-group-id="8012273119-5">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 145 | ···</span><span·class="p"·data-group-id=" | 145 | ···</span><span·class="p"·data-group-id="8012273119-6">{</span><span·class="n">Application</span><span·class="p">,</span><span·class="w">·</span><span·class="n">AppVsn</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Type</span><span·class="p"·data-group-id="8012273119-6">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 146 | ···</span><span·class="p"·data-group-id=" | 146 | ···</span><span·class="p"·data-group-id="8012273119-7">{</span><span·class="n">Application</span><span·class="p">,</span><span·class="w">·</span><span·class="n">AppVsn</span><span·class="p">,</span><span·class="w">·</span><span·class="n">IncApps</span><span·class="p"·data-group-id="8012273119-7">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 147 | ···</span><span·class="p"·data-group-id=" | 147 | ···</span><span·class="p"·data-group-id="8012273119-8">{</span><span·class="n">Application</span><span·class="p">,</span><span·class="w">·</span><span·class="n">AppVsn</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Type</span><span·class="p">,</span><span·class="w">·</span>[·...·truncated·by·diffoscope;·len:·177,·SHA:·a136a9833c5b94e898e0d553768365d9f905456bc49adb0d1b3a24a502d8786f·...·]-1">}</span><span·class="p">.</span></code></pre><ul><li><p><strong><code·class="inline">RelName·=·string()</code></strong>·-·Release·name.</p></li><li><p><strong><code·class="inline">Vsn·=·string()</code></strong>·-·Release·version.</p></li><li><p><strong><code·class="inline">EVsn·=·string()</code></strong>·-·ERTS·version·the·release·is·intended·for.</p></li><li><p><strong><code·class="inline">Application·=·atom()</code></strong>·-·Name·of·an·application·included·in·the·release.</p></li><li><p><strong><code·class="inline">AppVsn·=·string()</code></strong>·-·Version·of·an·application·included·in·the·release.</p></li><li><p><strong><code·class="inline">Type·=·permanent·|·transient·|·temporary·|·load·|·none</code></strong>·-·Start·type·of |
| 148 | an·application·included·in·the·release.</p><p>If·<code·class="inline">Type·=·permanent·|·transient·|·temporary</code>,·the·application·is·loaded·and | 148 | an·application·included·in·the·release.</p><p>If·<code·class="inline">Type·=·permanent·|·transient·|·temporary</code>,·the·application·is·loaded·and |
| 149 | started·in·the·corresponding·way,·see·<a·href="../../../../lib/kernel-10.2.3/doc/html/application.html"><code·class="inline">application</code></a>.</p><p>If·<code·class="inline">Type·=·load</code>,·the·application·is·only·loaded.</p><p>If·<code·class="inline">Type·=·none</code>,·the·application·is·not·loaded·and·not·started,·although·the | 149 | started·in·the·corresponding·way,·see·<a·href="../../../../lib/kernel-10.2.3/doc/html/application.html"><code·class="inline">application</code></a>.</p><p>If·<code·class="inline">Type·=·load</code>,·the·application·is·only·loaded.</p><p>If·<code·class="inline">Type·=·none</code>,·the·application·is·not·loaded·and·not·started,·although·the |
| 150 | code·for·its·modules·is·loaded.</p><p>Defaults·to·<code·class="inline">permanent</code></p></li><li><p><strong><code·class="inline">IncApps·=·[atom()]</code></strong>·-·A·list·of·applications·that·are·included·by·an | 150 | code·for·its·modules·is·loaded.</p><p>Defaults·to·<code·class="inline">permanent</code></p></li><li><p><strong><code·class="inline">IncApps·=·[atom()]</code></strong>·-·A·list·of·applications·that·are·included·by·an |
| 151 | application·included·in·the·release.·The·list·must·be·a·subset·of·the·included | 151 | application·included·in·the·release.·The·list·must·be·a·subset·of·the·included |
| 152 | applications·specified·in·the·application·resource·file·(<code·class="inline">Application.app</code>) | 152 | applications·specified·in·the·application·resource·file·(<code·class="inline">Application.app</code>) |
| 153 | and·overrides·this·value.·Defaults·to·the·same·value·as·in·the·application | 153 | and·overrides·this·value.·Defaults·to·the·same·value·as·in·the·application |
| 154 | resource·file.</p></li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>The·list·of·applications·must·contain·the·Kernel·and·STDLIB·applications.</p></section><h2·id="see-also"·class="section-heading"> | 154 | resource·file.</p></li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>The·list·of·applications·must·contain·the·Kernel·and·STDLIB·applications.</p></section><h2·id="see-also"·class="section-heading"> |
| Offset 1054, 16 lines modified | Offset 1054, 16 lines modified | ||
| 1054 | updated·(<code·class="inline">Bool==true</code>)·or·if·only·code·paths·for·modified·applications·are·to | 1054 | updated·(<code·class="inline">Bool==true</code>)·or·if·only·code·paths·for·modified·applications·are·to |
| 1055 | be·updated·(<code·class="inline">Bool==false</code>,·default).·This·option·has·only·effect·for·other | 1055 | be·updated·(<code·class="inline">Bool==false</code>,·default).·This·option·has·only·effect·for·other |
| 1056 | application·directories·than·the·default·<code·class="inline">$ROOT/lib/App-Vsn</code>,·that·is, | 1056 | application·directories·than·the·default·<code·class="inline">$ROOT/lib/App-Vsn</code>,·that·is, |
| 1057 | application·directories·specified·in·argument·<code·class="inline">AppDirs</code>·in·a·call·to | 1057 | application·directories·specified·in·argument·<code·class="inline">AppDirs</code>·in·a·call·to |
| 1058 | <a·href="#create_RELEASES/4"><code·class="inline">create_RELEASES/4</code></a>·or·<a·href="#set_unpacked/2"><code·class="inline">set_unpacked/2</code></a>.</p><p><em>Example:</em></p><p>In·the·current·version·<code·class="inline">CurVsn</code>·of·a·release,·the·application·directory·of | 1058 | <a·href="#create_RELEASES/4"><code·class="inline">create_RELEASES/4</code></a>·or·<a·href="#set_unpacked/2"><code·class="inline">set_unpacked/2</code></a>.</p><p><em>Example:</em></p><p>In·the·current·version·<code·class="inline">CurVsn</code>·of·a·release,·the·application·directory·of |
| 1059 | <code·class="inline">myapp</code>·is·<code·class="inline">$ROOT/lib/myapp-1.0</code>.·A·new·version·<code·class="inline">NewVsn</code>·is·unpacked·outside | 1059 | <code·class="inline">myapp</code>·is·<code·class="inline">$ROOT/lib/myapp-1.0</code>.·A·new·version·<code·class="inline">NewVsn</code>·is·unpacked·outside |
| 1060 | the·release·handler·and·the·release·handler·is·informed·about·this·with·a·call | 1060 | the·release·handler·and·the·release·handler·is·informed·about·this·with·a·call |
| 1061 | as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">release_handler</span><span·class="p">:</span><span·class="nf">set_unpacked</span><span·class="p"·data-group-id=" | 1061 | as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">release_handler</span><span·class="p">:</span><span·class="nf">set_unpacked</span><span·class="p"·data-group-id="7675044075-1">(</span><span·class="n">RelFile</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7675044075-2">[</span><span·class="p"·data-group-id="7675044075-3">{</span><span·class="ss">myapp</span><span·class="p">,</sp[·...·truncated·by·diffoscope;·len:·353,·SHA:·aaecbe335dda210c8311cbebfdb825d212b501b6ce7f7127d3e56e0a85fc3dee·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 1062 | </span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 1062 | </span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="7675044075-4">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">NewVsn</span><span·class="p"·data-group-id="7675044075-4">}</span></code></pre><p>If·<code·class="inline">NewVsn</code>·is·installed·with·option·<code·class="inline">{update_paths,true}</code>,·then |
| 1063 | <a·href="../../../../lib/kernel-10.2.3/doc/html/code.html#lib_dir/1"><code·class="inline">code:lib_dir(myapp)</code></a>·returns·<code·class="inline">/home/user/myapp-1.0</code>.</p></li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Installing·a·new·release·can·be·time·consuming·if·there·are·many·processes·in | 1063 | <a·href="../../../../lib/kernel-10.2.3/doc/html/code.html#lib_dir/1"><code·class="inline">code:lib_dir(myapp)</code></a>·returns·<code·class="inline">/home/user/myapp-1.0</code>.</p></li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Installing·a·new·release·can·be·time·consuming·if·there·are·many·processes·in |
| 1064 | the·system.·The·reason·is·that·each·process·must·be·checked·for·references·to | 1064 | the·system.·The·reason·is·that·each·process·must·be·checked·for·references·to |
| 1065 | old·code·before·a·module·can·be·purged.·This·check·can·lead·to·garbage | 1065 | old·code·before·a·module·can·be·purged.·This·check·can·lead·to·garbage |
| 1066 | collections·and·copying·of·data.</p><p>To·speed·up·the·execution·of·<a·href="#install_release/1"><code·class="inline">install_release</code></a>,·first | 1066 | collections·and·copying·of·data.</p><p>To·speed·up·the·execution·of·<a·href="#install_release/1"><code·class="inline">install_release</code></a>,·first |
| 1067 | call·<a·href="#check_install_release/1"><code·class="inline">check_install_release</code></a>,·using·option | 1067 | call·<a·href="#check_install_release/1"><code·class="inline">check_install_release</code></a>,·using·option |
| 1068 | <code·class="inline">purge</code>.·This·does·the·same·check·for·old·code.·Then·purges·all·modules·that | 1068 | <code·class="inline">purge</code>.·This·does·the·same·check·for·old·code.·Then·purges·all·modules·that |
| 1069 | can·be·soft-purged.·The·purged·modules·do·then·no·longer·have·any·old·code, | 1069 | can·be·soft-purged.·The·purged·modules·do·then·no·longer·have·any·old·code, |
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| 2 | ?rw-r--r--··6.1·unx·······20·bx·stor·25-Mar-18·0 | 2 | ?rw-r--r--··6.1·unx·······20·bx·stor·25-Mar-18·08:44·mimetype |
| 3 | ?rw-r--r--··6.1·unx······712·bx·defN·25-Mar-18·0 | 3 | ?rw-r--r--··6.1·unx······712·bx·defN·25-Mar-18·08:44·OEBPS/title.xhtml |
| 4 | ?rw-r--r--··6.1·unx····34842·bx·defN·25-Mar-18·0 | 4 | ?rw-r--r--··6.1·unx····34842·bx·defN·25-Mar-18·08:44·OEBPS/systools.xhtml |
| 5 | ?rw-r--r--··6.1·unx····11459·bx·defN·25-Mar-18·0 | 5 | ?rw-r--r--··6.1·unx····11459·bx·defN·25-Mar-18·08:44·OEBPS/script.xhtml |
| 6 | ?rw-r--r--··6.1·unx·····1680·bx·defN·25-Mar-18·0 | 6 | ?rw-r--r--··6.1·unx·····1680·bx·defN·25-Mar-18·08:44·OEBPS/sasl_intro.xhtml |
| 7 | ?rw-r--r--··6.1·unx····11100·bx·defN·25-Mar-18·0 | 7 | ?rw-r--r--··6.1·unx····11100·bx·defN·25-Mar-18·08:44·OEBPS/sasl_app.xhtml |
| 8 | ?rw-r--r--··6.1·unx·····3582·bx·defN·25-Mar-18·0 | 8 | ?rw-r--r--··6.1·unx·····3582·bx·defN·25-Mar-18·08:44·OEBPS/relup.xhtml |
| 9 | ?rw-r--r--··6.1·unx····74396·bx·defN·25-Mar-18·0 | 9 | ?rw-r--r--··6.1·unx····74396·bx·defN·25-Mar-18·08:44·OEBPS/release_handler.xhtml |
| 10 | ?rw-r--r--··6.1·unx·····6210·bx·defN·25-Mar-18·0 | 10 | ?rw-r--r--··6.1·unx·····6210·bx·defN·25-Mar-18·08:44·OEBPS/rel.xhtml |
| 11 | ?rw-r--r--··6.1·unx····36502·bx·defN·25-Mar-18·0 | 11 | ?rw-r--r--··6.1·unx····36502·bx·defN·25-Mar-18·08:44·OEBPS/rb.xhtml |
| 12 | ?rw-r--r--··6.1·unx····64019·bx·defN·25-Mar-18·0 | 12 | ?rw-r--r--··6.1·unx····64019·bx·defN·25-Mar-18·08:44·OEBPS/notes.xhtml |
| 13 | ?rw-r--r--··6.1·unx·····1639·bx·defN·25-Mar-18·0 | 13 | ?rw-r--r--··6.1·unx·····1639·bx·defN·25-Mar-18·08:44·OEBPS/nav.xhtml |
| 14 | ?rw-r--r--··6.1·unx····28563·bx·defN·25-Mar-18·0 | 14 | ?rw-r--r--··6.1·unx····28563·bx·defN·25-Mar-18·08:44·OEBPS/error_logging.xhtml |
| 15 | ?rw-r--r--··6.1·unx····14562·bx·defN·25-Mar-18·0 | 15 | ?rw-r--r--··6.1·unx····14562·bx·defN·25-Mar-18·08:44·OEBPS/dist/epub-erlang-ESPT6BQV.css |
| 16 | ?rw-r--r--··6.1·unx······499·bx·defN·25-Mar-18·0 | 16 | ?rw-r--r--··6.1·unx······499·bx·defN·25-Mar-18·08:44·OEBPS/dist/epub-LSJCIYTM.js |
| 17 | ?rw-r--r--··6.1·unx·····2758·bx·defN·25-Mar-18·0 | 17 | ?rw-r--r--··6.1·unx·····2758·bx·defN·25-Mar-18·08:44·OEBPS/content.opf |
| 18 | ?rw-r--r--··6.1·unx·····5837·bx·defN·25-Mar-18·0 | 18 | ?rw-r--r--··6.1·unx·····5837·bx·defN·25-Mar-18·08:44·OEBPS/assets/logo.png |
| 19 | ?rw-r--r--··6.1·unx····34558·bx·defN·25-Mar-18·0 | 19 | ?rw-r--r--··6.1·unx····34558·bx·defN·25-Mar-18·08:44·OEBPS/appup.xhtml |
| 20 | ?rw-r--r--··6.1·unx·····9998·bx·defN·25-Mar-18·0 | 20 | ?rw-r--r--··6.1·unx·····9998·bx·defN·25-Mar-18·08:44·OEBPS/alarm_handler.xhtml |
| 21 | ?rw-r--r--··6.1·unx······252·bx·defN·25-Mar-18·0 | 21 | ?rw-r--r--··6.1·unx······252·bx·defN·25-Mar-18·08:44·META-INF/container.xml |
| 22 | ?rw-r--r--··6.1·unx······162·bx·defN·25-Mar-18·0 | 22 | ?rw-r--r--··6.1·unx······162·bx·defN·25-Mar-18·08:44·META-INF/com.apple.ibooks.display-options.xml |
| 23 | 21·files,·343350·bytes·uncompressed,·886 | 23 | 21·files,·343350·bytes·uncompressed,·88683·bytes·compressed:··74.2% |
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| 1 | Zip·archive·data,·made·by·v6.1·UNIX,·extract·using·at·least·v1.0,·last·modified,·last·modified·Sun,·Mar·18·2025·0 | 1 | Zip·archive·data,·made·by·v6.1·UNIX,·extract·using·at·least·v1.0,·last·modified,·last·modified·Sun,·Mar·18·2025·08:44:20,·uncompressed·size·20,·method=store |
| Offset 933, 16 lines modified | Offset 933, 16 lines modified | ||
| 933 | updated·(<code·class="inline">Bool==true</code>)·or·if·only·code·paths·for·modified·applications·are·to | 933 | updated·(<code·class="inline">Bool==true</code>)·or·if·only·code·paths·for·modified·applications·are·to |
| 934 | be·updated·(<code·class="inline">Bool==false</code>,·default).·This·option·has·only·effect·for·other | 934 | be·updated·(<code·class="inline">Bool==false</code>,·default).·This·option·has·only·effect·for·other |
| 935 | application·directories·than·the·default·<code·class="inline">$ROOT/lib/App-Vsn</code>,·that·is, | 935 | application·directories·than·the·default·<code·class="inline">$ROOT/lib/App-Vsn</code>,·that·is, |
| 936 | application·directories·specified·in·argument·<code·class="inline">AppDirs</code>·in·a·call·to | 936 | application·directories·specified·in·argument·<code·class="inline">AppDirs</code>·in·a·call·to |
| 937 | <a·href="#create_RELEASES/4"><code·class="inline">create_RELEASES/4</code></a>·or·<a·href="#set_unpacked/2"><code·class="inline">set_unpacked/2</code></a>.</p><p><em>Example:</em></p><p>In·the·current·version·<code·class="inline">CurVsn</code>·of·a·release,·the·application·directory·of | 937 | <a·href="#create_RELEASES/4"><code·class="inline">create_RELEASES/4</code></a>·or·<a·href="#set_unpacked/2"><code·class="inline">set_unpacked/2</code></a>.</p><p><em>Example:</em></p><p>In·the·current·version·<code·class="inline">CurVsn</code>·of·a·release,·the·application·directory·of |
| 938 | <code·class="inline">myapp</code>·is·<code·class="inline">$ROOT/lib/myapp-1.0</code>.·A·new·version·<code·class="inline">NewVsn</code>·is·unpacked·outside | 938 | <code·class="inline">myapp</code>·is·<code·class="inline">$ROOT/lib/myapp-1.0</code>.·A·new·version·<code·class="inline">NewVsn</code>·is·unpacked·outside |
| 939 | the·release·handler·and·the·release·handler·is·informed·about·this·with·a·call | 939 | the·release·handler·and·the·release·handler·is·informed·about·this·with·a·call |
| 940 | as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nc">release_handler</samp><samp·class="p">:</samp><samp·class="nf">set_unpacked</samp><samp·class="p"·data-group-id=" | 940 | as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nc">release_handler</samp><samp·class="p">:</samp><samp·class="nf">set_unpacked</samp><samp·class="p"·data-group-id="4981426522-1">(</samp><samp·class="n">RelFile</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="p"·data-group-id="4981426522-2">[</samp><samp·class="p"·data-group-id="4981426522-3">{</samp><samp·class="ss">myapp</samp><samp·class="p">,</sa[·...·truncated·by·diffoscope;·len:·353,·SHA:·6d27123d129b440edea2ae7c3b7c244bf8236fc463552eb0f7d410ea18e838e1·...·]-1">)</samp><samp·class="p">.</samp><samp·class="w"> |
| 941 | </samp><samp·class="p">=></samp><samp·class="w">·</samp><samp·class="p"·data-group-id=" | 941 | </samp><samp·class="p">=></samp><samp·class="w">·</samp><samp·class="p"·data-group-id="4981426522-4">{</samp><samp·class="ss">ok</samp><samp·class="p">,</samp><samp·class="n">NewVsn</samp><samp·class="p"·data-group-id="4981426522-4">}</samp></code></pre><p>If·<code·class="inline">NewVsn</code>·is·installed·with·option·<code·class="inline">{update_paths,true}</code>,·then |
| 942 | <a·href="../../../../lib/kernel/doc/html/code.html#lib_dir/1"><code·class="inline">code:lib_dir(myapp)</code></a>·returns·<code·class="inline">/home/user/myapp-1.0</code>.</p></li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Installing·a·new·release·can·be·time·consuming·if·there·are·many·processes·in | 942 | <a·href="../../../../lib/kernel/doc/html/code.html#lib_dir/1"><code·class="inline">code:lib_dir(myapp)</code></a>·returns·<code·class="inline">/home/user/myapp-1.0</code>.</p></li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Installing·a·new·release·can·be·time·consuming·if·there·are·many·processes·in |
| 943 | the·system.·The·reason·is·that·each·process·must·be·checked·for·references·to | 943 | the·system.·The·reason·is·that·each·process·must·be·checked·for·references·to |
| 944 | old·code·before·a·module·can·be·purged.·This·check·can·lead·to·garbage | 944 | old·code·before·a·module·can·be·purged.·This·check·can·lead·to·garbage |
| 945 | collections·and·copying·of·data.</p><p>To·speed·up·the·execution·of·<a·href="#install_release/1"><code·class="inline">install_release</code></a>,·first | 945 | collections·and·copying·of·data.</p><p>To·speed·up·the·execution·of·<a·href="#install_release/1"><code·class="inline">install_release</code></a>,·first |
| 946 | call·<a·href="#check_install_release/1"><code·class="inline">check_install_release</code></a>,·using·option | 946 | call·<a·href="#check_install_release/1"><code·class="inline">check_install_release</code></a>,·using·option |
| 947 | <code·class="inline">purge</code>.·This·does·the·same·check·for·old·code.·Then·purges·all·modules·that | 947 | <code·class="inline">purge</code>.·This·does·the·same·check·for·old·code.·Then·purges·all·modules·that |
| 948 | can·be·soft-purged.·The·purged·modules·do·then·no·longer·have·any·old·code, | 948 | can·be·soft-purged.·The·purged·modules·do·then·no·longer·have·any·old·code, |
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| 31 | (<code·class="inline">.script</code>,·<code·class="inline">.boot</code>)·and·release·upgrade·files·(<code·class="inline">relup</code>).</p><h2·id="file-syntax"·class="section-heading"> | 31 | (<code·class="inline">.script</code>,·<code·class="inline">.boot</code>)·and·release·upgrade·files·(<code·class="inline">relup</code>).</p><h2·id="file-syntax"·class="section-heading"> |
| 32 | ··<a·href="#file-syntax"·class="hover-link"> | 32 | ··<a·href="#file-syntax"·class="hover-link"> |
| 33 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 33 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 34 | ··</a> | 34 | ··</a> |
| 35 | ··<span·class="text">File·Syntax</span> | 35 | ··<span·class="text">File·Syntax</span> |
| 36 | </h2> | 36 | </h2> |
| 37 | <p>The·release·resource·file·is·to·be·called·<code·class="inline">Name.rel</code>.</p><p>The·<code·class="inline">.rel</code>·file·contains·one·single·Erlang·term,·which·is·called·a·<em>release | 37 | <p>The·release·resource·file·is·to·be·called·<code·class="inline">Name.rel</code>.</p><p>The·<code·class="inline">.rel</code>·file·contains·one·single·Erlang·term,·which·is·called·a·<em>release |
| 38 | specification</em>.·The·file·has·the·following·syntax:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 38 | specification</em>.·The·file·has·the·following·syntax:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="4715996149-1">{</span><span·class="ss">release</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4715996149-2">{</span><span·class="n">RelName</span><span·class="p">,</span><span·class="n">Vsn</span><span·class="p"·data-g[·...·truncated·by·diffoscope;·len:·276,·SHA:·e304fab031222660ffa4a29e913bd722420e0947c17dcfb69af05be63e90c2ae·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 39 | ··</span><span·class="p"·data-group-id=" | 39 | ··</span><span·class="p"·data-group-id="4715996149-4">[</span><span·class="p"·data-group-id="4715996149-5">{</span><span·class="n">Application</span><span·class="p">,</span><span·class="w">·</span><span·class="n">AppVsn</span><span·class="p"·data-group-id="4715996149-5">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 40 | ···</span><span·class="p"·data-group-id=" | 40 | ···</span><span·class="p"·data-group-id="4715996149-6">{</span><span·class="n">Application</span><span·class="p">,</span><span·class="w">·</span><span·class="n">AppVsn</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Type</span><span·class="p"·data-group-id="4715996149-6">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 41 | ···</span><span·class="p"·data-group-id=" | 41 | ···</span><span·class="p"·data-group-id="4715996149-7">{</span><span·class="n">Application</span><span·class="p">,</span><span·class="w">·</span><span·class="n">AppVsn</span><span·class="p">,</span><span·class="w">·</span><span·class="n">IncApps</span><span·class="p"·data-group-id="4715996149-7">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 42 | ···</span><span·class="p"·data-group-id=" | 42 | ···</span><span·class="p"·data-group-id="4715996149-8">{</span><span·class="n">Application</span><span·class="p">,</span><span·class="w">·</span><span·class="n">AppVsn</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Type</span><span·class="p">,</span><span·class="w">·</span>[·...·truncated·by·diffoscope;·len:·177,·SHA:·f0d6f0afee9ebe7bcb87e08ae67ba6e935c86f561e4d39ec7903758f8773ef82·...·]-1">}</span><span·class="p">.</span></code></pre><ul><li><p><strong><code·class="inline">RelName·=·string()</code></strong>·-·Release·name.</p></li><li><p><strong><code·class="inline">Vsn·=·string()</code></strong>·-·Release·version.</p></li><li><p><strong><code·class="inline">EVsn·=·string()</code></strong>·-·ERTS·version·the·release·is·intended·for.</p></li><li><p><strong><code·class="inline">Application·=·atom()</code></strong>·-·Name·of·an·application·included·in·the·release.</p></li><li><p><strong><code·class="inline">AppVsn·=·string()</code></strong>·-·Version·of·an·application·included·in·the·release.</p></li><li><p><strong><code·class="inline">Type·=·permanent·|·transient·|·temporary·|·load·|·none</code></strong>·-·Start·type·of |
| 43 | an·application·included·in·the·release.</p><p>If·<code·class="inline">Type·=·permanent·|·transient·|·temporary</code>,·the·application·is·loaded·and | 43 | an·application·included·in·the·release.</p><p>If·<code·class="inline">Type·=·permanent·|·transient·|·temporary</code>,·the·application·is·loaded·and |
| 44 | started·in·the·corresponding·way,·see·<a·href="../../../../lib/kernel/doc/html/application.html"><code·class="inline">application</code></a>.</p><p>If·<code·class="inline">Type·=·load</code>,·the·application·is·only·loaded.</p><p>If·<code·class="inline">Type·=·none</code>,·the·application·is·not·loaded·and·not·started,·although·the | 44 | started·in·the·corresponding·way,·see·<a·href="../../../../lib/kernel/doc/html/application.html"><code·class="inline">application</code></a>.</p><p>If·<code·class="inline">Type·=·load</code>,·the·application·is·only·loaded.</p><p>If·<code·class="inline">Type·=·none</code>,·the·application·is·not·loaded·and·not·started,·although·the |
| 45 | code·for·its·modules·is·loaded.</p><p>Defaults·to·<code·class="inline">permanent</code></p></li><li><p><strong><code·class="inline">IncApps·=·[atom()]</code></strong>·-·A·list·of·applications·that·are·included·by·an | 45 | code·for·its·modules·is·loaded.</p><p>Defaults·to·<code·class="inline">permanent</code></p></li><li><p><strong><code·class="inline">IncApps·=·[atom()]</code></strong>·-·A·list·of·applications·that·are·included·by·an |
| 46 | application·included·in·the·release.·The·list·must·be·a·subset·of·the·included | 46 | application·included·in·the·release.·The·list·must·be·a·subset·of·the·included |
| 47 | applications·specified·in·the·application·resource·file·(<code·class="inline">Application.app</code>) | 47 | applications·specified·in·the·application·resource·file·(<code·class="inline">Application.app</code>) |
| 48 | and·overrides·this·value.·Defaults·to·the·same·value·as·in·the·application | 48 | and·overrides·this·value.·Defaults·to·the·same·value·as·in·the·application |
| 49 | resource·file.</p></li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>The·list·of·applications·must·contain·the·Kernel·and·STDLIB·applications.</p></section><h2·id="see-also"·class="section-heading"> | 49 | resource·file.</p></li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>The·list·of·applications·must·contain·the·Kernel·and·STDLIB·applications.</p></section><h2·id="see-also"·class="section-heading"> |
| Offset 138, 28 lines modified | Offset 138, 28 lines modified | ||
| 138 | files.</p><h2·id="file-syntax"·class="section-heading"> | 138 | files.</p><h2·id="file-syntax"·class="section-heading"> |
| 139 | ··<a·href="#file-syntax"·class="hover-link"> | 139 | ··<a·href="#file-syntax"·class="hover-link"> |
| 140 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 140 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 141 | ··</a> | 141 | ··</a> |
| 142 | ··<span·class="text">File·Syntax</span> | 142 | ··<span·class="text">File·Syntax</span> |
| 143 | </h2> | 143 | </h2> |
| 144 | <p>The·boot·script·is·stored·in·a·file·with·extension·<code·class="inline">.script</code>.·The·file·has·the | 144 | <p>The·boot·script·is·stored·in·a·file·with·extension·<code·class="inline">.script</code>.·The·file·has·the |
| 145 | following·syntax:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 145 | following·syntax:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="6046951937-1">{</span><span·class="ss">script</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6046951937-2">{</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Vsn</span><s[·...·truncated·by·diffoscope;·len:·39,·SHA:·4152fda4348b71bc505407d800ebcfb4e34cedad31e6c3be68be93c118569e4b·...·]-2">}</span><span·class="p">,</span><span·class="w"> |
| 146 | ·</span><span·class="p"·data-group-id=" | 146 | ·</span><span·class="p"·data-group-id="6046951937-3">[</span><span·class="w"> |
| 147 | ··</span><span·class="p"·data-group-id=" | 147 | ··</span><span·class="p"·data-group-id="6046951937-4">{</span><span·class="ss">progress</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">loading</span><span·class="p"·data-group-id="6046951937-4">}</span><span·class="p">,</span><span·class="w"> |
| 148 | ··</span><span·class="p"·data-group-id=" | 148 | ··</span><span·class="p"·data-group-id="6046951937-5">{</span><span·class="ss">preLoaded</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6046951937-6">[</span><span·class="n">Mod1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Mod2</spa[·...·truncated·by·diffoscope;·len:·216,·SHA:·644fc981484bddf8ebd8ff8cdd4d4df018c3e911229533977f8d9f313d5d6e0b·...·]-5">}</span><span·class="p">,</span><span·class="w"> |
| 149 | ··</span><span·class="p"·data-group-id=" | 149 | ··</span><span·class="p"·data-group-id="6046951937-7">{</span><span·class="ss">path</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6046951937-8">[</span><span·class="n">Dir1</span><span·class="p">,</span><span·class="s">"$ROOT/Dir"</span><span·clas[·...·truncated·by·diffoscope;·len:·180,·SHA:·15f7765a8478bb5ad1dbb2b2f2140bffddbe666fd11cb44c455078523e0f3385·...·]-7">}</span><span·class="p">.</span><span·class="w"> |
| 150 | ··</span><span·class="p"·data-group-id=" | 150 | ··</span><span·class="p"·data-group-id="6046951937-9">{</span><span·class="ss">primLoad</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6046951937-10">[</span><span·class="n">Mod1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Mod2</spa[·...·truncated·by·diffoscope;·len:·217,·SHA:·31c91e3e51eab7ec33ccd2df6c2558a72ffdacca575458096782af58f2ba821d·...·]-9">}</span><span·class="p">,</span><span·class="w"> |
| 151 | ··</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 151 | ··</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 152 | ··</span><span·class="p"·data-group-id=" | 152 | ··</span><span·class="p"·data-group-id="6046951937-11">{</span><span·class="ss">kernel_load_completed</span><span·class="p"·data-group-id="6046951937-11">}</span><span·class="p">,</span><span·class="w"> |
| 153 | ··</span><span·class="p"·data-group-id=" | 153 | ··</span><span·class="p"·data-group-id="6046951937-12">{</span><span·class="ss">progress</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">loaded</span><span·class="p"·data-group-id="6046951937-12">}</span><span·class="p">,</span><span·class="w"> |
| 154 | ··</span><span·class="p"·data-group-id=" | 154 | ··</span><span·class="p"·data-group-id="6046951937-13">{</span><span·class="ss">kernelProcess</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6046951937-14">{</span><span·class="n">Mod[·...·truncated·by·diffoscope;·len:·252,·SHA:·ab428a96aee746f8339fd7f15563615f3bbaf74b0fe383756c123abdcde103ef·...·]-13">}</span><span·class="p">,</span><span·class="w"> |
| 155 | ··</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 155 | ··</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 156 | ··</span><span·class="p"·data-group-id=" | 156 | ··</span><span·class="p"·data-group-id="6046951937-15">{</span><span·class="nb">apply</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6046951937-16">{</span><span·class="n">Mod</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Func</span><[·...·truncated·by·diffoscope;·len:·169,·SHA:·9e3c7385ba505b0883b674f5095e71e71179877e57aaca9b6f85f0f8ba340ec2·...·]-15">}</span><span·class="p">,</span><span·class="w"> |
| 157 | ··</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 157 | ··</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 158 | ··</span><span·class="p"·data-group-id=" | 158 | ··</span><span·class="p"·data-group-id="6046951937-17">{</span><span·class="ss">progress</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">started</span><span·class="p"·data-group-id="6046951937-17">}</span><span·class="p"·data-group-id="6046951937-3">]</span><span·class="p"[·...·truncated·by·diffoscope;·len:·26,·SHA:·ee78f09e4086b162c754b815d02ac4dec5c8536222b521f724bc563505647a39·...·]-1">}</span><span·class="p">.</span></code></pre><ul><li><p><strong><code·class="inline">Name·=·string()</code></strong>·-·Defines·the·system·name.</p></li><li><p><strong><code·class="inline">Vsn·=·string()</code></strong>·-·Defines·the·system·version.</p></li><li><p><strong><code·class="inline">{progress,·Term}</code></strong>·-·Sets·the·"progress"·of·the·initialization·program. |
| 159 | The·<a·href="../../../../erts-15.2.3/doc/html/init.html#get_status/0"><code·class="inline">init:get_status/0</code></a>·function·returns·the·current·value·of·the·progress, | 159 | The·<a·href="../../../../erts-15.2.3/doc/html/init.html#get_status/0"><code·class="inline">init:get_status/0</code></a>·function·returns·the·current·value·of·the·progress, |
| 160 | which·is·<code·class="inline">{InternalStatus,Term}</code>.</p></li><li><p><strong><code·class="inline">{path,·[Dir]}</code></strong>·-·<code·class="inline">Dir</code>·is·a·string.·This·argument·sets·the·load·path·of | 160 | which·is·<code·class="inline">{InternalStatus,Term}</code>.</p></li><li><p><strong><code·class="inline">{path,·[Dir]}</code></strong>·-·<code·class="inline">Dir</code>·is·a·string.·This·argument·sets·the·load·path·of |
| 161 | the·system·to·<code·class="inline">[Dir]</code>.·The·load·path·used·to·load·modules·is·obtained·from·the | 161 | the·system·to·<code·class="inline">[Dir]</code>.·The·load·path·used·to·load·modules·is·obtained·from·the |
| 162 | initial·load·path,·which·is·given·in·the·script·file,·together·with·any·path | 162 | initial·load·path,·which·is·given·in·the·script·file,·together·with·any·path |
| 163 | flags·that·were·supplied·in·the·command-line·arguments.·The·command-line | 163 | flags·that·were·supplied·in·the·command-line·arguments.·The·command-line |
| 164 | arguments·modify·the·path·as·follows:</p><ul><li><code·class="inline">-pa·Dir1·Dir2·...·DirN</code>·adds·the·directories | 164 | arguments·modify·the·path·as·follows:</p><ul><li><code·class="inline">-pa·Dir1·Dir2·...·DirN</code>·adds·the·directories |
| 165 | <code·class="inline">DirN,·DirN-1,·...,·Dir2,·Dir1</code>·to·the·front·of·the·initial·load·path.</li><li><code·class="inline">-pz·Dir1·Dir2·...·DirN</code>·adds·the·directories·<code·class="inline">Dir1,·Dir2,·...,·DirN</code>·to·the | 165 | <code·class="inline">DirN,·DirN-1,·...,·Dir2,·Dir1</code>·to·the·front·of·the·initial·load·path.</li><li><code·class="inline">-pz·Dir1·Dir2·...·DirN</code>·adds·the·directories·<code·class="inline">Dir1,·Dir2,·...,·DirN</code>·to·the |
| Offset 1, 1 lines modified | Offset 1, 1 lines modified | ||
| 1 | Zip·archive·data,·made·by·v6.1·UNIX,·extract·using·at·least·v1.0,·last·modified,·last·modified·Sun,·Mar·18·2025·0 | 1 | Zip·archive·data,·made·by·v6.1·UNIX,·extract·using·at·least·v1.0,·last·modified,·last·modified·Sun,·Mar·18·2025·08:47:32,·uncompressed·size·20,·method=store |
| Offset 1823, 16 lines modified | Offset 1823, 16 lines modified | ||
| 1823 | ······<div·class="specs"> | 1823 | ······<div·class="specs"> |
| 1824 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·load_mib(MibName)·->·ok·|·{error,·Reason}·when·MibName·::·<a·href="snmp.xhtml#t:mib_name/0">snmp:mib_name</a>(),·Reason·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:term/0">term</a>().</pre> | 1824 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·load_mib(MibName)·->·ok·|·{error,·Reason}·when·MibName·::·<a·href="snmp.xhtml#t:mib_name/0">snmp:mib_name</a>(),·Reason·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 1825 | ······</div> | 1825 | ······</div> |
| 1826 | <p>Load·a·<code·class="inline">Mib</code>·into·the·manager.·The·<code·class="inline">MibName</code>·is·the·name·of·the·Mib,·including | 1826 | <p>Load·a·<code·class="inline">Mib</code>·into·the·manager.·The·<code·class="inline">MibName</code>·is·the·name·of·the·Mib,·including |
| 1827 | the·path·to·where·the·compiled·mib·is·found.·For·example,</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="w">··········</samp><samp·class="n">Dir</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="nc">code</samp><samp·class="p">:</samp><samp·class="nf">priv_dir</samp><samp·class="p"·data-group-id=" | 1827 | the·path·to·where·the·compiled·mib·is·found.·For·example,</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="w">··········</samp><samp·class="n">Dir</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="nc">code</samp><samp·class="p">:</samp><samp·class="nf">priv_dir</samp><samp·class="p"·data-group-id="9426115430-1">(</samp><samp·class="ss">my_app</samp><samp·class="p"·data-group-id="9426115430-1">)</samp><samp·class="w">·</samp><samp·class="o">++</samp><samp·class="w">·</samp><samp·class="s">"/mibs/"</samp><samp·class="p">,</samp><samp·class="w"> |
| 1828 | ··········</samp><samp·class="nc">snmpm</samp><samp·class="p">:</samp><samp·class="nf">load_mib</samp><samp·class="p"·data-group-id=" | 1828 | ··········</samp><samp·class="nc">snmpm</samp><samp·class="p">:</samp><samp·class="nf">load_mib</samp><samp·class="p"·data-group-id="9426115430-2">(</samp><samp·class="n">Dir</samp><samp·class="w">·</samp><samp·class="o">++</samp><samp·class="w">·</samp><samp·class="s">"MY-MIB"</samp><samp·class="p"·data-group-id="9426115430-2">)</samp><samp·class="p">.</samp></code></pre> |
| 1829 | ··</section> | 1829 | ··</section> |
| 1830 | </section> | 1830 | </section> |
| 1831 | <section·class="detail"·id="log_to_io/1"> | 1831 | <section·class="detail"·id="log_to_io/1"> |
| 1832 | ··<div·class="detail-header"> | 1832 | ··<div·class="detail-header"> |
| 1833 | ····<a·href="#log_to_io/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1833 | ····<a·href="#log_to_io/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1834 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1834 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 3329, 16 lines modified | Offset 3329, 16 lines modified | ||
| 3329 | ······<div·class="specs"> | 3329 | ······<div·class="specs"> |
| 3330 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·unload_mib(MibName)·->·ok·|·{error,·Reason}·when·MibName·::·<a·href="snmp.xhtml#t:mib_name/0">snmp:mib_name</a>(),·Reason·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:term/0">term</a>().</pre> | 3330 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·unload_mib(MibName)·->·ok·|·{error,·Reason}·when·MibName·::·<a·href="snmp.xhtml#t:mib_name/0">snmp:mib_name</a>(),·Reason·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 3331 | ······</div> | 3331 | ······</div> |
| 3332 | <p>Unload·a·<code·class="inline">Mib</code>·from·the·manager.·The·<code·class="inline">MibName</code>·is·the·name·of·the·Mib,·including | 3332 | <p>Unload·a·<code·class="inline">Mib</code>·from·the·manager.·The·<code·class="inline">MibName</code>·is·the·name·of·the·Mib,·including |
| 3333 | the·path·to·where·the·compiled·mib·is·found.·For·example,</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="w">··········</samp><samp·class="n">Dir</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="nc">code</samp><samp·class="p">:</samp><samp·class="nf">priv_dir</samp><samp·class="p"·data-group-id="6 | 3333 | the·path·to·where·the·compiled·mib·is·found.·For·example,</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="w">··········</samp><samp·class="n">Dir</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="nc">code</samp><samp·class="p">:</samp><samp·class="nf">priv_dir</samp><samp·class="p"·data-group-id="6415097515-1">(</samp><samp·class="ss">my_app</samp><samp·class="p"·data-group-id="6415097515-1">)</samp><samp·class="w">·</samp><samp·class="o">++</samp><samp·class="w">·</samp><samp·class="s">"/mibs/"</samp><samp·class="p">,</samp><samp·class="w"> |
| 3334 | ··········</samp><samp·class="nc">snmpm</samp><samp·class="p">:</samp><samp·class="nf">unload_mib</samp><samp·class="p"·data-group-id="6 | 3334 | ··········</samp><samp·class="nc">snmpm</samp><samp·class="p">:</samp><samp·class="nf">unload_mib</samp><samp·class="p"·data-group-id="6415097515-2">(</samp><samp·class="n">Dir</samp><samp·class="w">·</samp><samp·class="o">++</samp><samp·class="w">·</samp><samp·class="s">"MY-MIB"</samp><samp·class="p"·data-group-id="6415097515-2">)</samp><samp·class="p">.</samp></code></pre> |
| 3335 | ··</section> | 3335 | ··</section> |
| 3336 | </section> | 3336 | </section> |
| 3337 | <section·class="detail"·id="unregister_agent/2"> | 3337 | <section·class="detail"·id="unregister_agent/2"> |
| 3338 | ··<div·class="detail-header"> | 3338 | ··<div·class="detail-header"> |
| 3339 | ····<a·href="#unregister_agent/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 3339 | ····<a·href="#unregister_agent/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 3340 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 3340 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 22, 15 lines modified | Offset 22, 15 lines modified | ||
| 22 | ····</h1> | 22 | ····</h1> |
| 23 | <p>SNMP·MIB·compiler·frontend</p><h2·id="synopsis"·class="section-heading"> | 23 | <p>SNMP·MIB·compiler·frontend</p><h2·id="synopsis"·class="section-heading"> |
| 24 | ··<a·href="#synopsis"·class="hover-link"> | 24 | ··<a·href="#synopsis"·class="hover-link"> |
| 25 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 25 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 26 | ··</a> | 26 | ··</a> |
| 27 | ··<span·class="text">Synopsis</span> | 27 | ··<span·class="text">Synopsis</span> |
| 28 | </h2> | 28 | </h2> |
| 29 | <pre><code·class="makeup·erlang"·translate="no"><span·class="ss">snmpc</span><span·class="w">·</span><span·class="p"·data-group-id=" | 29 | <pre><code·class="makeup·erlang"·translate="no"><span·class="ss">snmpc</span><span·class="w">·</span><span·class="p"·data-group-id="2230068641-1">[</span><span·class="ss">options</span><span·class="p"·data-group-id="2230068641-1">]</span><span·class="w">·</span><span·class="ss">file</span><span·class="p">.</span><span·class="ss">mib</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">file</span><span·class="p">.</span><span·class="ss">bin</span></code></pre><h2·id="description"·class="section-heading"> |
| 30 | ··<a·href="#description"·class="hover-link"> | 30 | ··<a·href="#description"·class="hover-link"> |
| 31 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 31 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 32 | ··</a> | 32 | ··</a> |
| 33 | ··<span·class="text">Description</span> | 33 | ··<span·class="text">Description</span> |
| 34 | </h2> | 34 | </h2> |
| 35 | <p>The·<code·class="inline">snmpc</code>·program·provides·a·way·to·run·the·SNMP·MIB·compiler·of·the·Erlang | 35 | <p>The·<code·class="inline">snmpc</code>·program·provides·a·way·to·run·the·SNMP·MIB·compiler·of·the·Erlang |
| 36 | system.</p><p><code·class="inline">snmpc</code>·compiles·an·SNMP·MIB·file.·See·<a·href="snmpc.xhtml#compile/1">compile/1,2</a>·for·more | 36 | system.</p><p><code·class="inline">snmpc</code>·compiles·an·SNMP·MIB·file.·See·<a·href="snmpc.xhtml#compile/1">compile/1,2</a>·for·more |
| Offset 25, 16 lines modified | Offset 25, 16 lines modified | ||
| 25 | ······<section·id="moduledoc"·class="docstring"> | 25 | ······<section·id="moduledoc"·class="docstring"> |
| 26 | <p>Encode·and·Decode·Functions·for·SNMP·PDUs</p><p>RFC1157,·RFC1905·and/or·RFC2272·should·be·studied·carefully·before·using·this | 26 | <p>Encode·and·Decode·Functions·for·SNMP·PDUs</p><p>RFC1157,·RFC1905·and/or·RFC2272·should·be·studied·carefully·before·using·this |
| 27 | module,·<code·class="inline">snmp_pdus</code>.</p><p>The·module·<code·class="inline">snmp_pdus</code>·contains·functions·for·encoding·and·decoding·of·SNMP | 27 | module,·<code·class="inline">snmp_pdus</code>.</p><p>The·module·<code·class="inline">snmp_pdus</code>·contains·functions·for·encoding·and·decoding·of·SNMP |
| 28 | protocol·data·units·(PDUs).·In·short,·this·module·converts·a·list·of·bytes·to | 28 | protocol·data·units·(PDUs).·In·short,·this·module·converts·a·list·of·bytes·to |
| 29 | Erlang·record·representations·and·vice·versa.·The·record·definitions·can·be | 29 | Erlang·record·representations·and·vice·versa.·The·record·definitions·can·be |
| 30 | found·in·the·file·<code·class="inline">snmp/include/snmp_types.hrl</code>.·If·snmpv3·is·used,·the·module | 30 | found·in·the·file·<code·class="inline">snmp/include/snmp_types.hrl</code>.·If·snmpv3·is·used,·the·module |
| 31 | that·includes·<code·class="inline">snmp_types.hrl</code>·must·define·the·constant·<code·class="inline">SNMP_USE_V3</code>·before·the | 31 | that·includes·<code·class="inline">snmp_types.hrl</code>·must·define·the·constant·<code·class="inline">SNMP_USE_V3</code>·before·the |
| 32 | header·file·is·included.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p">-</samp><samp·class="na">define</samp><samp·class="p"·data-group-id=" | 32 | header·file·is·included.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p">-</samp><samp·class="na">define</samp><samp·class="p"·data-group-id="9469748080-1">(</samp><samp·class="n">SNMP_USE_V3</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="ss">true</samp><samp·class="p"·data-group-id="9469748080-1">)</samp><samp·class="p">.</samp><samp·class="w"> |
| 33 | </samp><samp·class="p">-</samp><samp·class="na">include_lib</samp><samp·class="p"·data-group-id=" | 33 | </samp><samp·class="p">-</samp><samp·class="na">include_lib</samp><samp·class="p"·data-group-id="9469748080-2">(</samp><samp·class="s">"snmp/include/snmp_types.hrl"</samp><samp·class="p"·data-group-id="9469748080-2">)</samp><samp·class="p">.</samp></code></pre><p>Encoding·and·decoding·must·be·done·explicitly·when·writing·your·own·Net·if |
| 34 | process.</p> | 34 | process.</p> |
| 35 | ······</section> | 35 | ······</section> |
| 36 | ······<section·id="summary"·class="details-list"> | 36 | ······<section·id="summary"·class="details-list"> |
| 37 | ········<h1·class="section-heading">Summary</h1> | 37 | ········<h1·class="section-heading">Summary</h1> |
| 38 | <div·class="summary-types·summary"> | 38 | <div·class="summary-types·summary"> |
| Offset 32, 30 lines modified | Offset 32, 30 lines modified | ||
| 32 | before·it·will·be·compiled.·This·text·file·must·have·the·same·name·as·the·MIB, | 32 | before·it·will·be·compiled.·This·text·file·must·have·the·same·name·as·the·MIB, |
| 33 | but·with·the·suffix·<code·class="inline">.mib</code>.·This·is·necessary·for·handling·the·<code·class="inline">IMPORT</code> | 33 | but·with·the·suffix·<code·class="inline">.mib</code>.·This·is·necessary·for·handling·the·<code·class="inline">IMPORT</code> |
| 34 | statement.</p><p>The·association·file,·which·contains·the·names·of·instrumentation·functions·for | 34 | statement.</p><p>The·association·file,·which·contains·the·names·of·instrumentation·functions·for |
| 35 | the·MIB,·should·have·the·suffix·<code·class="inline">.funcs</code>.·If·the·compiler·does·not·find·the | 35 | the·MIB,·should·have·the·suffix·<code·class="inline">.funcs</code>.·If·the·compiler·does·not·find·the |
| 36 | association·file,·it·gives·a·warning·message·and·uses·default·instrumentation | 36 | association·file,·it·gives·a·warning·message·and·uses·default·instrumentation |
| 37 | functions.·(See·<a·href="snmp_instr_functions.xhtml#snmp_3">Default·Instrumentation</a>·for | 37 | functions.·(See·<a·href="snmp_instr_functions.xhtml#snmp_3">Default·Instrumentation</a>·for |
| 38 | more·details).</p><p>The·MIB·compiler·is·started·with·a·call·to·<code·class="inline">snmpc:compile(<mibname>).</code>·For | 38 | more·details).</p><p>The·MIB·compiler·is·started·with·a·call·to·<code·class="inline">snmpc:compile(<mibname>).</code>·For |
| 39 | example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">snmpc</span><span·class="p">:</span><span·class="nf">compile</span><span·class="p"·data-group-id=" | 39 | example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">snmpc</span><span·class="p">:</span><span·class="nf">compile</span><span·class="p"·data-group-id="2356465953-1">(</span><span·class="s">"RFC1213-MIB"</span><span·class="p"·data-group-id="2356465953-1">)</span><span·class="p">.</span></code></pre><p>The·output·is·a·new·file·which·is·called·<code·class="inline"><mibname>.bin</code>.</p><p>The·MIB·compiler·understands·both·SMIv1·and·SMIv2·MIBs.·It·uses·the |
| 40 | MODULE-IDENTITY·statement·to·determinate·if·the·MIB·is·written·in·SMI·version·1 | 40 | MODULE-IDENTITY·statement·to·determinate·if·the·MIB·is·written·in·SMI·version·1 |
| 41 | or·2.</p><h2·id="importing-mibs"·class="section-heading"> | 41 | or·2.</p><h2·id="importing-mibs"·class="section-heading"> |
| 42 | ··<a·href="#importing-mibs"·class="hover-link"> | 42 | ··<a·href="#importing-mibs"·class="hover-link"> |
| 43 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 43 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 44 | ··</a> | 44 | ··</a> |
| 45 | ··<span·class="text">Importing·MIBs</span> | 45 | ··<span·class="text">Importing·MIBs</span> |
| 46 | </h2> | 46 | </h2> |
| 47 | <p>The·compiler·handles·the·<code·class="inline">IMPORT</code>·statement.·It·is·important·to·import·the | 47 | <p>The·compiler·handles·the·<code·class="inline">IMPORT</code>·statement.·It·is·important·to·import·the |
| 48 | compiled·file·and·not·the·ASN.1·(source)·file.·A·MIB·must·be·recompiled·to·make | 48 | compiled·file·and·not·the·ASN.1·(source)·file.·A·MIB·must·be·recompiled·to·make |
| 49 | changes·visible·to·other·MIBs·importing·it.</p><p>The·compiled·files·of·the·imported·MIBs·must·be·present·in·the·current | 49 | changes·visible·to·other·MIBs·importing·it.</p><p>The·compiled·files·of·the·imported·MIBs·must·be·present·in·the·current |
| 50 | directory,·or·a·directory·in·the·current·path.·The·path·is·supplied·with·the | 50 | directory,·or·a·directory·in·the·current·path.·The·path·is·supplied·with·the |
| 51 | <code·class="inline">{i,·Path}</code>·option,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">snmpc</span><span·class="p">:</span><span·class="nf">compile</span><span·class="p"·data-group-id=" | 51 | <code·class="inline">{i,·Path}</code>·option,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">snmpc</span><span·class="p">:</span><span·class="nf">compile</span><span·class="p"·data-group-id="6460632145-1">(</span><span·class="s">"MY-MIB"</span><span·class="p">,</span><span·class="w"> |
| 52 | ·······</span><span·class="p"·data-group-id=" | 52 | ·······</span><span·class="p"·data-group-id="6460632145-2">[</span><span·class="p"·data-group-id="6460632145-3">{</span><span·class="ss">i</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6460632145-4">[</span><span·class="s">"friend_mibs/"</span><span·cl[·...·truncated·by·diffoscope;·len:·292,·SHA:·be4541ff300d38e3d2d931107507941e08e8aa2b408cb146b35e7d3c417a7a32·...·]-1">)</span><span·class="p">.</span></code></pre><p>It·is·also·possible·to·import·MIBs·from·OTP·applications·in·an·<code·class="inline">"include_lib"</code> |
| 53 | like·fashion·with·the·<code·class="inline">il</code>·option.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">snmpc</span><span·class="p">:</span><span·class="nf">compile</span><span·class="p"·data-group-id=" | 53 | like·fashion·with·the·<code·class="inline">il</code>·option.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">snmpc</span><span·class="p">:</span><span·class="nf">compile</span><span·class="p"·data-group-id="2452911199-1">(</span><span·class="s">"MY-MIB"</span><span·class="p">,</span><span·class="w"> |
| 54 | ·······</span><span·class="p"·data-group-id=" | 54 | ·······</span><span·class="p"·data-group-id="2452911199-2">[</span><span·class="p"·data-group-id="2452911199-3">{</span><span·class="ss">il</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2452911199-4">[</span><span·class="s">"snmp/priv/mibs/"</span><spa[·...·truncated·by·diffoscope;·len:·295,·SHA:·bb127c6e30220ed6c821809cbd502740427b497c321c583b7eec0de6c0587819·...·]-1">)</span><span·class="p">.</span></code></pre><p>finds·the·latest·version·of·the·<code·class="inline">snmp</code>·and·<code·class="inline">myapp</code>·applications·in·the·OTP |
| 55 | system·and·uses·the·expanded·paths·as·include·paths.</p><p>Note·that·an·SMIv2·MIB·can·import·an·SMIv1·MIB·and·vice·versa.</p><p>The·following·MIBs·are·built-ins·of·the·Erlang·SNMP·compiler:·SNMPv2-SMI, | 55 | system·and·uses·the·expanded·paths·as·include·paths.</p><p>Note·that·an·SMIv2·MIB·can·import·an·SMIv1·MIB·and·vice·versa.</p><p>The·following·MIBs·are·built-ins·of·the·Erlang·SNMP·compiler:·SNMPv2-SMI, |
| 56 | RFC-1215,·RFC-1212,·SNMPv2-TC,·SNMPv2-CONF,·and·RFC1155-SMI.·They·cannot | 56 | RFC-1215,·RFC-1212,·SNMPv2-TC,·SNMPv2-CONF,·and·RFC1155-SMI.·They·cannot |
| 57 | therefore·be·compiled·separately.</p><h2·id="mib-consistency-checking"·class="section-heading"> | 57 | therefore·be·compiled·separately.</p><h2·id="mib-consistency-checking"·class="section-heading"> |
| 58 | ··<a·href="#mib-consistency-checking"·class="hover-link"> | 58 | ··<a·href="#mib-consistency-checking"·class="hover-link"> |
| 59 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 59 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 60 | ··</a> | 60 | ··</a> |
| 61 | ··<span·class="text">MIB·Consistency·Checking</span> | 61 | ··<span·class="text">MIB·Consistency·Checking</span> |
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| 26 | <p>Abstract·Data·Type·for·SNMP·Indexing</p><p>The·module·<code·class="inline">snmp_index</code>·implements·an·Abstract·Data·Type·(ADT)·for·an·SNMP·index | 26 | <p>Abstract·Data·Type·for·SNMP·Indexing</p><p>The·module·<code·class="inline">snmp_index</code>·implements·an·Abstract·Data·Type·(ADT)·for·an·SNMP·index |
| 27 | structure·for·SNMP·tables.·It·is·implemented·as·an·ets·table·of·the·ordered_set | 27 | structure·for·SNMP·tables.·It·is·implemented·as·an·ets·table·of·the·ordered_set |
| 28 | data-type,·which·means·that·all·operations·are·O(log·n).·In·the·table,·the·key | 28 | data-type,·which·means·that·all·operations·are·O(log·n).·In·the·table,·the·key |
| 29 | is·an·ASN.1·OBJECT·IDENTIFIER.</p><p>This·index·is·used·to·separate·the·implementation·of·the·SNMP·ordering·from·the | 29 | is·an·ASN.1·OBJECT·IDENTIFIER.</p><p>This·index·is·used·to·separate·the·implementation·of·the·SNMP·ordering·from·the |
| 30 | actual·implementation·of·the·table.·The·SNMP·ordering,·that·is·implementation·of | 30 | actual·implementation·of·the·table.·The·SNMP·ordering,·that·is·implementation·of |
| 31 | GET·NEXT,·is·implemented·in·this·module.</p><p>For·example,·suppose·there·is·an·SNMP·table,·which·is·best·implemented·in·Erlang | 31 | GET·NEXT,·is·implemented·in·this·module.</p><p>For·example,·suppose·there·is·an·SNMP·table,·which·is·best·implemented·in·Erlang |
| 32 | as·one·process·per·SNMP·table·row.·Suppose·further·that·the·INDEX·in·the·SNMP | 32 | as·one·process·per·SNMP·table·row.·Suppose·further·that·the·INDEX·in·the·SNMP |
| 33 | table·is·an·OCTET·STRING.·The·index·structure·would·be·created·as·follows:</p><pre><code·class="text">snmp_index:new(string)</code></pre><p>For·each·new·process·we·create,·we·insert·an·item·in·an·<code·class="inline">snmp_index</code>·structure:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nf">new_process</samp><samp·class="p"·data-group-id=" | 33 | table·is·an·OCTET·STRING.·The·index·structure·would·be·created·as·follows:</p><pre><code·class="text">snmp_index:new(string)</code></pre><p>For·each·new·process·we·create,·we·insert·an·item·in·an·<code·class="inline">snmp_index</code>·structure:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nf">new_process</samp><samp·class="p"·data-group-id="4733757421-1">(</samp><samp·class="n">Name</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">SnmpIndex</samp><samp·class="p"·data-group-id="4733757421-1">)</samp><samp·class="w">·</samp><samp·class="p">-></samp><samp·class="w"> |
| 34 | ··</samp><samp·class="n">Pid</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="nf">start_process</samp><samp·class="p"·data-group-id=" | 34 | ··</samp><samp·class="n">Pid</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="nf">start_process</samp><samp·class="p"·data-group-id="4733757421-2">(</samp><samp·class="p"·data-group-id="4733757421-2">)</samp><samp·class="p">,</samp><samp·class="w"> |
| 35 | ··</samp><samp·class="n">NewSnmpIndex</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w"> | 35 | ··</samp><samp·class="n">NewSnmpIndex</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w"> |
| 36 | ····</samp><samp·class="nc">snmp_index</samp><samp·class="p">:</samp><samp·class="nf">insert</samp><samp·class="p"·data-group-id=" | 36 | ····</samp><samp·class="nc">snmp_index</samp><samp·class="p">:</samp><samp·class="nf">insert</samp><samp·class="p"·data-group-id="4733757421-3">(</samp><samp·class="n">SnmpIndex</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Name</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Pid</samp><samp·class="p"·data-group-id="4733757421-3">)</samp><samp·class="p">,</samp><samp·class="w"> |
| 37 | ··</samp><samp·class="o"><</samp><samp·class="p">.</samp><samp·class="p">.</samp><samp·class="p">.</samp><samp·class="o">></samp></code></pre><p>With·this·structure,·we·can·now·map·an·OBJECT·IDENTIFIER·in·e.g.·a·GET·NEXT | 37 | ··</samp><samp·class="o"><</samp><samp·class="p">.</samp><samp·class="p">.</samp><samp·class="p">.</samp><samp·class="o">></samp></code></pre><p>With·this·structure,·we·can·now·map·an·OBJECT·IDENTIFIER·in·e.g.·a·GET·NEXT |
| 38 | request,·to·the·correct·process:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nf">get_next_pid</samp><samp·class="p"·data-group-id="9 | 38 | request,·to·the·correct·process:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nf">get_next_pid</samp><samp·class="p"·data-group-id="9082304284-1">(</samp><samp·class="n">Oid</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">SnmpIndex</samp><samp·class="p"·data-group-id="9082304284-1">)</samp><samp·class="w">·</samp><samp·class="p">-></samp><samp·class="w"> |
| 39 | ··</samp><samp·class="p"·data-group-id="9 | 39 | ··</samp><samp·class="p"·data-group-id="9082304284-2">{</samp><samp·class="ss">ok</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="p"·data-group-id="9082304284-3">{</samp><samp·class="p">_</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Pid</samp><samp·clas[·...·truncated·by·diffoscope;·len:·458,·SHA:·725e2e642fa845be99efee61ebad1bfafde2b15ebda9c76ce51f2eb88f575d6d·...·]-4">)</samp><samp·class="p">,</samp><samp·class="w"> |
| 40 | ··</samp><samp·class="n">Pid</samp><samp·class="p">.</samp></code></pre><h2·id="module-warnings"·class="section-heading"> | 40 | ··</samp><samp·class="n">Pid</samp><samp·class="p">.</samp></code></pre><h2·id="module-warnings"·class="section-heading"> |
| 41 | ··<a·href="#module-warnings"·class="hover-link"> | 41 | ··<a·href="#module-warnings"·class="hover-link"> |
| 42 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 42 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 43 | ··</a> | 43 | ··</a> |
| 44 | ··<span·class="text">Warnings</span> | 44 | ··<span·class="text">Warnings</span> |
| 45 | </h2> | 45 | </h2> |
| 46 | <section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p><a·href=""·id="1"></a>·All·API·functions·that·update·the·index·return·a·<code·class="inline">NewIndex</code>·term. | 46 | <section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p><a·href=""·id="1"></a>·All·API·functions·that·update·the·index·return·a·<code·class="inline">NewIndex</code>·term. |
| Offset 199, 15 lines modified | Offset 199, 15 lines modified | ||
| 199 | This·MIB·can·be·used·with·any·SNMP·version.</li><li>SNMP-COMMUNITY-MIB,·which·defines·managed·objects·for·coexistence·of·SNMPv1 | 199 | This·MIB·can·be·used·with·any·SNMP·version.</li><li>SNMP-COMMUNITY-MIB,·which·defines·managed·objects·for·coexistence·of·SNMPv1 |
| 200 | and·SNMPv2c·with·SNMPv3.·This·MIB·is·only·useful·if·SNMPv1·or·SNMPv2c·is·used, | 200 | and·SNMPv2c·with·SNMPv3.·This·MIB·is·only·useful·if·SNMPv1·or·SNMPv2c·is·used, |
| 201 | possibly·in·combination·with·SNMPv3.</li><li>SNMP-USER-BASED-SM-MIB,·which·defines·managed·objects·for·authentication·and | 201 | possibly·in·combination·with·SNMPv3.</li><li>SNMP-USER-BASED-SM-MIB,·which·defines·managed·objects·for·authentication·and |
| 202 | privacy.·This·MIB·is·only·useful·with·SNMPv3.</li></ul><p>All·of·these·MIBs·should·be·loaded·into·the·Master·Agent.·Once·loaded,·these | 202 | privacy.·This·MIB·is·only·useful·with·SNMPv3.</li></ul><p>All·of·these·MIBs·should·be·loaded·into·the·Master·Agent.·Once·loaded,·these |
| 203 | MIBs·are·always·available·in·all·contexts.</p><p>The·ASN.1·code,·the·Erlang·source·code,·and·the·generated·<code·class="inline">.hrl</code>·files·for·them | 203 | MIBs·are·always·available·in·all·contexts.</p><p>The·ASN.1·code,·the·Erlang·source·code,·and·the·generated·<code·class="inline">.hrl</code>·files·for·them |
| 204 | are·provided·in·the·distribution·and·are·placed·in·the·directories·<code·class="inline">mibs</code>, | 204 | are·provided·in·the·distribution·and·are·placed·in·the·directories·<code·class="inline">mibs</code>, |
| 205 | <code·class="inline">src</code>,·and·<code·class="inline">include</code>,·respectively,·in·the·<code·class="inline">snmp</code>·application.</p><p>The·<code·class="inline">.hrl</code>·files·are·generated·with·<a·href="snmpc.xhtml#mib_to_hrl/1"><code·class="inline">snmpc:mib_to_hrl/1</code></a>.·Include·these·files·in | 205 | <code·class="inline">src</code>,·and·<code·class="inline">include</code>,·respectively,·in·the·<code·class="inline">snmp</code>·application.</p><p>The·<code·class="inline">.hrl</code>·files·are·generated·with·<a·href="snmpc.xhtml#mib_to_hrl/1"><code·class="inline">snmpc:mib_to_hrl/1</code></a>.·Include·these·files·in |
| 206 | your·code·as·in·the·following·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id=" | 206 | your·code·as·in·the·following·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="5983605848-1">(</span><span·class="s">"snmp/include/SNMPv2-MIB.hrl"</span><span·class="p"·data-group-id="5983605848-1">)</span><span·class="p">.</span></code></pre><p>The·initial·values·for·the·managed·objects·defined·in·these·tables,·are·read·at |
| 207 | start-up·from·a·set·of·configuration·files.·These·are·described·in | 207 | start-up·from·a·set·of·configuration·files.·These·are·described·in |
| 208 | <a·href="snmp_config.xhtml">Configuration·Files</a>.</p><h3·id="standard-mib-and-snmpv2-mib"·class="section-heading"> | 208 | <a·href="snmp_config.xhtml">Configuration·Files</a>.</p><h3·id="standard-mib-and-snmpv2-mib"·class="section-heading"> |
| 209 | ··<a·href="#standard-mib-and-snmpv2-mib"·class="hover-link"> | 209 | ··<a·href="#standard-mib-and-snmpv2-mib"·class="hover-link"> |
| 210 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 210 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 211 | ··</a> | 211 | ··</a> |
| 212 | ··<span·class="text">STANDARD-MIB·and·SNMPv2-MIB</span> | 212 | ··<span·class="text">STANDARD-MIB·and·SNMPv2-MIB</span> |
| 213 | </h3> | 213 | </h3> |
| Offset 360, 17 lines modified | Offset 360, 17 lines modified | ||
| 360 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 360 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 361 | ··</a> | 361 | ··</a> |
| 362 | ··<span·class="text">Notifications</span> | 362 | ··<span·class="text">Notifications</span> |
| 363 | </h2> | 363 | </h2> |
| 364 | <p>Notifications·are·defined·in·SMIv1·with·the·TRAP-TYPE·macro·in·the·definition·of | 364 | <p>Notifications·are·defined·in·SMIv1·with·the·TRAP-TYPE·macro·in·the·definition·of |
| 365 | an·MIB·(see·RFC1215).·The·corresponding·macro·in·SMIv2·is·NOTIFICATION-TYPE. | 365 | an·MIB·(see·RFC1215).·The·corresponding·macro·in·SMIv2·is·NOTIFICATION-TYPE. |
| 366 | When·an·application·decides·to·send·a·notification,·it·calls·one·of·the | 366 | When·an·application·decides·to·send·a·notification,·it·calls·one·of·the |
| 367 | following·functions:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">snmpa</span><span·class="p">:</span><span·class="nf">send_notification</span><span·class="p"·data-group-id=" | 367 | following·functions:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">snmpa</span><span·class="p">:</span><span·class="nf">send_notification</span><span·class="p"·data-group-id="0902624457-1">(</span><span·class="n">Agent</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Notification</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Receiver</span><span·class="w"> |
| 368 | ·······················</span><span·class="p"·data-group-id=" | 368 | ·······················</span><span·class="p"·data-group-id="0902624457-2">[</span><span·class="p">,</span><span·class="w">·</span><span·class="n">NotifyName</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ContextName</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Varbind[·...·truncated·by·diffoscope;·len:·102,·SHA:·47e40ff5480e126f4cdedaf4500b667fdfafd614fc2835685990bffb9ad140fa·...·]-1">)</span><span·class="w"> |
| 369 | </span><span·class="nc">snmpa</span><span·class="p">:</span><span·class="nf">send_trap</span><span·class="p"·data-group-id=" | 369 | </span><span·class="nc">snmpa</span><span·class="p">:</span><span·class="nf">send_trap</span><span·class="p"·data-group-id="0902624457-3">(</span><span·class="n">Agent</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Notification</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Community</span><span·class="w">·</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·286,·SHA:·d459b71ea2d413e61570c1f2e5dd53d2032f1623ab77524a9225a78fb4fe1703·...·]-3">)</span></code></pre><p>providing·the·registered·name·or·process·identifier·of·the·agent·where·the·MIB, |
| 370 | which·defines·the·notification·is·loaded·and·the·symbolic·name·of·the | 370 | which·defines·the·notification·is·loaded·and·the·symbolic·name·of·the |
| 371 | notification.</p><p>If·the·<code·class="inline">send_notification/3,4</code>·function·is·used,·all·management·targets·are | 371 | notification.</p><p>If·the·<code·class="inline">send_notification/3,4</code>·function·is·used,·all·management·targets·are |
| 372 | selected,·as·defined·in·RFC2273.·The·<code·class="inline">Receiver</code>·parameter·defines·where·the | 372 | selected,·as·defined·in·RFC2273.·The·<code·class="inline">Receiver</code>·parameter·defines·where·the |
| 373 | agent·should·send·information·about·the·delivery·of·inform·requests.</p><p>If·the·<code·class="inline">send_notification/5</code>·function·is·used,·an·<code·class="inline">NotifyName</code>·must·be·provided. | 373 | agent·should·send·information·about·the·delivery·of·inform·requests.</p><p>If·the·<code·class="inline">send_notification/5</code>·function·is·used,·an·<code·class="inline">NotifyName</code>·must·be·provided. |
| 374 | This·parameter·is·used·as·an·index·in·the·<code·class="inline">snmpNotifyTable</code>,·and·the·management | 374 | This·parameter·is·used·as·an·index·in·the·<code·class="inline">snmpNotifyTable</code>,·and·the·management |
| 375 | targets·defined·by·that·single·entry·is·used.</p><p>The·<code·class="inline">send_notification/6</code>·function·is·the·most·general·version·of·the·function. | 375 | targets·defined·by·that·single·entry·is·used.</p><p>The·<code·class="inline">send_notification/6</code>·function·is·the·most·general·version·of·the·function. |
| 376 | A·<code·class="inline">ContextName</code>·must·be·specified,·from·which·the·notification·will·be·sent.·If | 376 | A·<code·class="inline">ContextName</code>·must·be·specified,·from·which·the·notification·will·be·sent.·If |
| Offset 3074, 16 lines modified | Offset 3074, 16 lines modified | ||
| 3074 | ······<div·class="specs"> | 3074 | ······<div·class="specs"> |
| 3075 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·print_version_info(Prefix)·->·<a·href="#t:void/0">void</a>()·when·Prefix·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:string/0">string</a>()·|·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:non_neg_integer/0">non_neg_integer</a>().</pre> | 3075 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·print_version_info(Prefix)·->·<a·href="#t:void/0">void</a>()·when·Prefix·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:string/0">string</a>()·|·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:non_neg_integer/0">non_neg_integer</a>().</pre> |
| 3076 | ······</div> | 3076 | ······</div> |
| 3077 | <p>Utility·function(s)·to·produce·a·formatted·printout·of·the·versions·info | 3077 | <p>Utility·function(s)·to·produce·a·formatted·printout·of·the·versions·info |
| 3078 | generated·by·the·<code·class="inline">versions1</code>·function</p><p>This·is·the·same·as·doing,·e.g.:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="w">···········</samp><samp·class="p"·data-group-id="4346019785-1">{</samp><samp·class="ss">ok</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">V</samp><samp·class="p"·data-group-id="4346019785-1">}</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="nc">snmp</samp><samp·class="p">:</samp><samp·class="nf">versions1</samp><samp·class="p"·data-group-id="4346019785-2">(</samp><samp·class="p"·data-group-id="4346019785-2">)</samp><samp·class="p">,</samp><samp·class="w"> | ||
| 3079 | 3078 | generated·by·the·<code·class="inline">versions1</code>·function</p><p>This·is·the·same·as·doing,·e.g.:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="w">···········</samp><samp·class="p"·data-group-id="3965124418-1">{</samp><samp·class="ss[·...·truncated·by·diffoscope;·len:·438,·SHA:·47610f6ca37b394a2ed8d74e17c64037ac0fb7bc29c696f86854c7c107f2c688·...·]> | |
| 3079 | ···········</samp><samp·class="nc">snmp</samp><samp·class="p">:</samp><samp·class="nf">print_versions</samp><samp·class="p"·data-group-id="3965124418-3">(</samp><samp·class="n">V</samp><samp·class="p"·data-group-id="3965124418-3">)</samp><samp·class="p">.</samp></code></pre> | ||
| 3080 | ··</section> | 3080 | ··</section> |
| 3081 | </section> | 3081 | </section> |
| 3082 | <section·class="detail"·id="print_versions/1"> | 3082 | <section·class="detail"·id="print_versions/1"> |
| 3083 | ··<div·class="detail-header"> | 3083 | ··<div·class="detail-header"> |
| 3084 | ····<a·href="#print_versions/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 3084 | ····<a·href="#print_versions/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 3085 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 3085 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 3132, 16 lines modified | Offset 3132, 16 lines modified | ||
| 3132 | ····························Prefix·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:string/0">string</a>()·|·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:non_neg_integer/0">non_neg_integer</a>(), | 3132 | ····························Prefix·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:string/0">string</a>()·|·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:non_neg_integer/0">non_neg_integer</a>(), |
| 3133 | ····························Versions·::·[VersionInfo], | 3133 | ····························Versions·::·[VersionInfo], |
| 3134 | ····························VersionInfo·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:term/0">term</a>().</pre> | 3134 | ····························VersionInfo·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 3135 | ······</div> | 3135 | ······</div> |
| 3136 | <p>Utility·function·to·produce·a·formatted·printout·of·the·versions·info·generated | 3136 | <p>Utility·function·to·produce·a·formatted·printout·of·the·versions·info·generated |
| 3137 | by·the·<code·class="inline">versions1</code>·and·<code·class="inline">versions2</code>·functions</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="w">···········</samp><samp·class="p"·data-group-id="4840373659-1">{</samp><samp·class="ss">ok</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">V</samp><samp·class="p"·data-group-id="4840373659-1">}</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="nc">snmp</samp><samp·class="p">:</samp><samp·class="nf">versions1</samp><samp·class="p"·data-group-id="4840373659-2">(</samp><samp·class="p"·data-group-id="4840373659-2">)</samp><samp·class="p">,</samp><samp·class="w"> | ||
| 3138 | 3137 | by·the·<code·class="inline">versions1</code>·and·<code·class="inline">versions2</code>·functions</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="w">···········</samp><samp·class="p"·data-group-id="2142893301-1">{</samp><samp·[·...·truncated·by·diffoscope;·len:·447,·SHA:·fcd9f4b50fb0616ed28e5584d944117f0997340f545b2a1321052ea8bd613a44·...·]> | |
| 3138 | ···········</samp><samp·class="nc">snmp</samp><samp·class="p">:</samp><samp·class="nf">print_versions</samp><samp·class="p"·data-group-id="2142893301-3">(</samp><samp·class="n">V</samp><samp·class="p"·data-group-id="2142893301-3">)</samp><samp·class="p">.</samp></code></pre> | ||
| 3139 | ··</section> | 3139 | ··</section> |
| 3140 | </section> | 3140 | </section> |
| 3141 | <section·class="detail"·id="read_mib/1"> | 3141 | <section·class="detail"·id="read_mib/1"> |
| 3142 | ··<div·class="detail-header"> | 3142 | ··<div·class="detail-header"> |
| 3143 | ····<a·href="#read_mib/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 3143 | ····<a·href="#read_mib/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 3144 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 3144 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 3261, 25 lines modified | Offset 3261, 25 lines modified | ||
| 3261 | ·······················TraceOpt·::·{timestamp,·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:boolean/0">boolean</a>()}·|·TargetOpt.</pre> | 3261 | ·······················TraceOpt·::·{timestamp,·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:boolean/0">boolean</a>()}·|·TargetOpt.</pre> |
| 3262 | ······</div> | 3262 | ······</div> |
| 3263 | <p>This·function·is·used·to·set·up·trace·on·function(s)·for·the·given·module·or | 3263 | <p>This·function·is·used·to·set·up·trace·on·function(s)·for·the·given·module·or |
| 3264 | modules.</p><p>The·example·below·sets·up·trace·on·the·exported·functions·(default)·of·module | 3264 | modules.</p><p>The·example·below·sets·up·trace·on·the·exported·functions·(default)·of·module |
| 3265 | <code·class="inline">snmp_generic</code>·and·all·functions·of·module·<code·class="inline">snmp_generic_mnesia</code>.·With·return | 3265 | <code·class="inline">snmp_generic</code>·and·all·functions·of·module·<code·class="inline">snmp_generic_mnesia</code>.·With·return |
| 3266 | values·(which·is·default)·and·timestamps·in·both·cases·(which·is·also·default):</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="w">» ··</samp><samp·class="nc">snmp</samp><samp·class="p">:</samp><samp·class="nf">enable_trace</samp><samp·class="p"·data-group-id=" | 3266 | values·(which·is·default)·and·timestamps·in·both·cases·(which·is·also·default):</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="w">» ··</samp><samp·class="nc">snmp</samp><samp·class="p">:</samp><samp·class="nf">enable_trace</samp><samp·class="p"·data-group-id="9986162572-1">(</samp><samp·class="p"·data-group-id="9986162572-1">)</samp><samp·class="p">,</samp><samp·class="w"> |
| 3267 | » ··</samp><samp·class="nc">snmp</samp><samp·class="p">:</samp><samp·class="nf">set_trace</samp><samp·class="p"·data-group-id=" | 3267 | » ··</samp><samp·class="nc">snmp</samp><samp·class="p">:</samp><samp·class="nf">set_trace</samp><samp·class="p"·data-group-id="9986162572-2">(</samp><samp·class="p"·data-group-id="9986162572-3">[</samp><samp·class="ss">snmp_generic</samp><samp·class="p">,</samp><samp·class="w"> |
| 3268 | ··························</samp><samp·class="p"·data-group-id=" | 3268 | ··························</samp><samp·class="p"·data-group-id="9986162572-4">{</samp><samp·class="ss">snmp_generic_mnesia</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="p"·data-group-id="9986162572-5">[</samp><samp·class="p"·data-group-id="9986162572-6">{</samp><samp·class="ss">scope</samp><samp·cl[·...·truncated·by·diffoscope;·len:·330,·SHA:·df3060d212a7c9fcc4e7ad8ffa597c53793593641a3cd21176ac3779f0e243eb·...·]-2">)</samp><samp·class="p">,</samp><samp·class="w"> |
| 3269 | » ··</samp><samp·class="p">.</samp><samp·class="w"> | 3269 | » ··</samp><samp·class="p">.</samp><samp·class="w"> |
| 3270 | » ··</samp><samp·class="p">.</samp><samp·class="w"> | 3270 | » ··</samp><samp·class="p">.</samp><samp·class="w"> |
| 3271 | » ··</samp><samp·class="p">.</samp><samp·class="w"> | 3271 | » ··</samp><samp·class="p">.</samp><samp·class="w"> |
| 3272 | ··········</samp><samp·class="nc">snmp</samp><samp·class="p">:</samp><samp·class="nf">set_trace</samp><samp·class="p"·data-group-id=" | 3272 | ··········</samp><samp·class="nc">snmp</samp><samp·class="p">:</samp><samp·class="nf">set_trace</samp><samp·class="p"·data-group-id="9986162572-7">(</samp><samp·class="ss">snmp_generic</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="ss">disable</samp><samp·class="p"·data-group-id="9986162572-7">)</samp><samp·class="p">,</samp><samp·class="w"> |
| 3273 | » ··</samp><samp·class="p">.</samp><samp·class="w"> | 3273 | » ··</samp><samp·class="p">.</samp><samp·class="w"> |
| 3274 | » ··</samp><samp·class="p">.</samp><samp·class="w"> | 3274 | » ··</samp><samp·class="p">.</samp><samp·class="w"> |
| 3275 | » ··</samp><samp·class="p">.</samp><samp·class="w"> | 3275 | » ··</samp><samp·class="p">.</samp><samp·class="w"> |
| 3276 | » ··</samp><samp·class="nc">snmp</samp><samp·class="p">:</samp><samp·class="nf">disable_trace</samp><samp·class="p"·data-group-id=" | 3276 | » ··</samp><samp·class="nc">snmp</samp><samp·class="p">:</samp><samp·class="nf">disable_trace</samp><samp·class="p"·data-group-id="9986162572-8">(</samp><samp·class="p"·data-group-id="9986162572-8">)</samp><samp·class="p">,</samp></code></pre> |
| 3277 | ··</section> | 3277 | ··</section> |
| 3278 | </section> | 3278 | </section> |
| 3279 | <section·class="detail"·id="start/0"> | 3279 | <section·class="detail"·id="start/0"> |
| 3280 | ··<div·class="detail-header"> | 3280 | ··<div·class="detail-header"> |
| 3281 | ····<a·href="#start/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 3281 | ····<a·href="#start/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 3282 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 3282 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 3195, 16 lines modified | Offset 3195, 16 lines modified | ||
| 3195 | ······<div·class="specs"> | 3195 | ······<div·class="specs"> |
| 3196 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·print_version_info(Prefix)·->·<a·href="#t:void/0">void</a>()·when·Prefix·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>()·|·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0">non_neg_integer</a>().</pre> | 3196 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·print_version_info(Prefix)·->·<a·href="#t:void/0">void</a>()·when·Prefix·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>()·|·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0">non_neg_integer</a>().</pre> |
| 3197 | ······</div> | 3197 | ······</div> |
| 3198 | <p>Utility·function(s)·to·produce·a·formatted·printout·of·the·versions·info | 3198 | <p>Utility·function(s)·to·produce·a·formatted·printout·of·the·versions·info |
| 3199 | generated·by·the·<code·class="inline">versions1</code>·function</p><p>This·is·the·same·as·doing,·e.g.:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">···········</span><span·class="p"·data-group-id="2622050518-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">V</span><span·class="p"·data-group-id="2622050518-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">snmp</span><span·class="p">:</span><span·class="nf">versions1</span><span·class="p"·data-group-id="2622050518-2">(</span><span·class="p"·data-group-id="2622050518-2">)</span><span·class="p">,</span><span·class="w"> | ||
| 3200 | 3199 | generated·by·the·<code·class="inline">versions1</code>·function</p><p>This·is·the·same·as·doing,·e.g.:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">···········</span><span·class="p"·data-group-id="8669618754-1">{</span><span·class="ss[·...·truncated·by·diffoscope;·len:·438,·SHA:·61a1adcb7e3928cf7f48050143deec83cb2230e499d8bb80a65dc3e96cd24429·...·]> | |
| 3200 | ···········</span><span·class="nc">snmp</span><span·class="p">:</span><span·class="nf">print_versions</span><span·class="p"·data-group-id="8669618754-3">(</span><span·class="n">V</span><span·class="p"·data-group-id="8669618754-3">)</span><span·class="p">.</span></code></pre> | ||
| 3201 | ··</section> | 3201 | ··</section> |
| 3202 | </section> | 3202 | </section> |
| 3203 | <section·class="detail"·id="print_versions/1"> | 3203 | <section·class="detail"·id="print_versions/1"> |
| 3204 | ··<div·class="detail-header"> | 3204 | ··<div·class="detail-header"> |
| 3205 | ····<a·href="#print_versions/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 3205 | ····<a·href="#print_versions/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 3206 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 3206 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 3253, 16 lines modified | Offset 3253, 16 lines modified | ||
| 3253 | ····························Prefix·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>()·|·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0">non_neg_integer</a>(), | 3253 | ····························Prefix·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>()·|·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0">non_neg_integer</a>(), |
| 3254 | ····························Versions·::·[VersionInfo], | 3254 | ····························Versions·::·[VersionInfo], |
| 3255 | ····························VersionInfo·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> | 3255 | ····························VersionInfo·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 3256 | ······</div> | 3256 | ······</div> |
| 3257 | <p>Utility·function·to·produce·a·formatted·printout·of·the·versions·info·generated | 3257 | <p>Utility·function·to·produce·a·formatted·printout·of·the·versions·info·generated |
| 3258 | by·the·<code·class="inline">versions1</code>·and·<code·class="inline">versions2</code>·functions</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">···········</span><span·class="p"·data-group-id="4252702670-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">V</span><span·class="p"·data-group-id="4252702670-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">snmp</span><span·class="p">:</span><span·class="nf">versions1</span><span·class="p"·data-group-id="4252702670-2">(</span><span·class="p"·data-group-id="4252702670-2">)</span><span·class="p">,</span><span·class="w"> | ||
| 3259 | 3258 | by·the·<code·class="inline">versions1</code>·and·<code·class="inline">versions2</code>·functions</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">···········</span><span·class="p"·data-group-id="6002054485-1">{</span><span·[·...·truncated·by·diffoscope;·len:·447,·SHA:·d3a04a7ce2c2b63851f04de2d573226596fcc2e79140fbe639a83f137665b930·...·]> | |
| 3259 | ···········</span><span·class="nc">snmp</span><span·class="p">:</span><span·class="nf">print_versions</span><span·class="p"·data-group-id="6002054485-3">(</span><span·class="n">V</span><span·class="p"·data-group-id="6002054485-3">)</span><span·class="p">.</span></code></pre> | ||
| 3260 | ··</section> | 3260 | ··</section> |
| 3261 | </section> | 3261 | </section> |
| 3262 | <section·class="detail"·id="read_mib/1"> | 3262 | <section·class="detail"·id="read_mib/1"> |
| 3263 | ··<div·class="detail-header"> | 3263 | ··<div·class="detail-header"> |
| 3264 | ····<a·href="#read_mib/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 3264 | ····<a·href="#read_mib/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 3265 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 3265 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 3382, 25 lines modified | Offset 3382, 25 lines modified | ||
| 3382 | ·······················TraceOpt·::·{timestamp,·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:boolean/0">boolean</a>()}·|·TargetOpt.</pre> | 3382 | ·······················TraceOpt·::·{timestamp,·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:boolean/0">boolean</a>()}·|·TargetOpt.</pre> |
| 3383 | ······</div> | 3383 | ······</div> |
| 3384 | <p>This·function·is·used·to·set·up·trace·on·function(s)·for·the·given·module·or | 3384 | <p>This·function·is·used·to·set·up·trace·on·function(s)·for·the·given·module·or |
| 3385 | modules.</p><p>The·example·below·sets·up·trace·on·the·exported·functions·(default)·of·module | 3385 | modules.</p><p>The·example·below·sets·up·trace·on·the·exported·functions·(default)·of·module |
| 3386 | <code·class="inline">snmp_generic</code>·and·all·functions·of·module·<code·class="inline">snmp_generic_mnesia</code>.·With·return | 3386 | <code·class="inline">snmp_generic</code>·and·all·functions·of·module·<code·class="inline">snmp_generic_mnesia</code>.·With·return |
| 3387 | values·(which·is·default)·and·timestamps·in·both·cases·(which·is·also·default):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">» ··</span><span·class="nc">snmp</span><span·class="p">:</span><span·class="nf">enable_trace</span><span·class="p"·data-group-id=" | 3387 | values·(which·is·default)·and·timestamps·in·both·cases·(which·is·also·default):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">» ··</span><span·class="nc">snmp</span><span·class="p">:</span><span·class="nf">enable_trace</span><span·class="p"·data-group-id="5184941157-1">(</span><span·class="p"·data-group-id="5184941157-1">)</span><span·class="p">,</span><span·class="w"> |
| 3388 | » ··</span><span·class="nc">snmp</span><span·class="p">:</span><span·class="nf">set_trace</span><span·class="p"·data-group-id=" | 3388 | » ··</span><span·class="nc">snmp</span><span·class="p">:</span><span·class="nf">set_trace</span><span·class="p"·data-group-id="5184941157-2">(</span><span·class="p"·data-group-id="5184941157-3">[</span><span·class="ss">snmp_generic</span><span·class="p">,</span><span·class="w"> |
| 3389 | ··························</span><span·class="p"·data-group-id=" | 3389 | ··························</span><span·class="p"·data-group-id="5184941157-4">{</span><span·class="ss">snmp_generic_mnesia</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5184941157-5">[</span><span·class="p"·data-group-id="5184941157-6">{</span><span·class="ss">scope</span><span·cl[·...·truncated·by·diffoscope;·len:·330,·SHA:·6421293357cc5eaf707b98fc90acdad1a1d2432ead6adc155f58933f6b483033·...·]-2">)</span><span·class="p">,</span><span·class="w"> |
| 3390 | » ··</span><span·class="p">.</span><span·class="w"> | 3390 | » ··</span><span·class="p">.</span><span·class="w"> |
| 3391 | » ··</span><span·class="p">.</span><span·class="w"> | 3391 | » ··</span><span·class="p">.</span><span·class="w"> |
| 3392 | » ··</span><span·class="p">.</span><span·class="w"> | 3392 | » ··</span><span·class="p">.</span><span·class="w"> |
| 3393 | ··········</span><span·class="nc">snmp</span><span·class="p">:</span><span·class="nf">set_trace</span><span·class="p"·data-group-id=" | 3393 | ··········</span><span·class="nc">snmp</span><span·class="p">:</span><span·class="nf">set_trace</span><span·class="p"·data-group-id="5184941157-7">(</span><span·class="ss">snmp_generic</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">disable</span><span·class="p"·data-group-id="5184941157-7">)</span><span·class="p">,</span><span·class="w"> |
| 3394 | » ··</span><span·class="p">.</span><span·class="w"> | 3394 | » ··</span><span·class="p">.</span><span·class="w"> |
| 3395 | » ··</span><span·class="p">.</span><span·class="w"> | 3395 | » ··</span><span·class="p">.</span><span·class="w"> |
| 3396 | » ··</span><span·class="p">.</span><span·class="w"> | 3396 | » ··</span><span·class="p">.</span><span·class="w"> |
| 3397 | » ··</span><span·class="nc">snmp</span><span·class="p">:</span><span·class="nf">disable_trace</span><span·class="p"·data-group-id=" | 3397 | » ··</span><span·class="nc">snmp</span><span·class="p">:</span><span·class="nf">disable_trace</span><span·class="p"·data-group-id="5184941157-8">(</span><span·class="p"·data-group-id="5184941157-8">)</span><span·class="p">,</span></code></pre> |
| 3398 | ··</section> | 3398 | ··</section> |
| 3399 | </section> | 3399 | </section> |
| 3400 | <section·class="detail"·id="start/0"> | 3400 | <section·class="detail"·id="start/0"> |
| 3401 | ··<div·class="detail-header"> | 3401 | ··<div·class="detail-header"> |
| 3402 | ····<a·href="#start/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 3402 | ····<a·href="#start/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 3403 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 3403 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 325, 74 lines modified | Offset 325, 74 lines modified | ||
| 325 | ·······::=·{·empTable·1·} | 325 | ·······::=·{·empTable·1·} |
| 326 | ·······EmpEntry·::= | 326 | ·······EmpEntry·::= |
| 327 | ··············SEQUENCE·{ | 327 | ··············SEQUENCE·{ |
| 328 | ··················empDepNo·········INTEGER, | 328 | ··················empDepNo·········INTEGER, |
| 329 | ··················empName··········DisplayString, | 329 | ··················empName··········DisplayString, |
| 330 | ··················empTelNo·········DisplayString, | 330 | ··················empTelNo·········DisplayString, |
| 331 | ··················empStatus········RowStatus | 331 | ··················empStatus········RowStatus |
| 332 | ··············}</code></pre><p>The·corresponding·Mnesia·table·is·specified·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id=" | 332 | ··············}</code></pre><p>The·corresponding·Mnesia·table·is·specified·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id="4833622337-1">(</span><span·class="p"·data-group-id="4833622337-2">[</span><span·class="p"·data-group-id="4833622337-3">{</span><span·class="ss">name</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">employees</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·22,·SHA:·81ce3a1cd5ff52283c4d91c2ce88eb0d9d81cb9760ffc33e1e3776589d97cada·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 333 | ·····················</span><span·class="p"·data-group-id=" | 333 | ·····················</span><span·class="p"·data-group-id="4833622337-4">{</span><span·class="ss">snmp</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4833622337-5">[</span><span·class="p"·data-group-id="4833622337-6">{</span><span·class="ss">key</span><span·class="p">,</span><[·...·truncated·by·diffoscope;·len:·385,·SHA:·d4789ea0ffcf754793897906f621849c9c2bc38a3c4a7aeefb4c6fc086a6a0f1·...·]-4">}</span><span·class="p">,</span><span·class="w"> |
| 334 | ·····················</span><span·class="p"·data-group-id=" | 334 | ·····················</span><span·class="p"·data-group-id="4833622337-8">{</span><span·class="ss">attributes</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4833622337-9">[</span><span·class="ss">key</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">telno</[·...·truncated·by·diffoscope;·len:·287,·SHA:·6843a2bd513236b2f22146a7090ff4ce699f13ca92f0a28cfc7043262fe2bbe6·...·]-1">)</span><span·class="p">.</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>In·the·Mnesia·tables,·the·two·key·columns·are·stored·as·a·tuple·with·two |
| 335 | elements.·Therefore,·the·arity·of·the·table·is·3.</p></section><h3·id="instrumentation-functions"·class="section-heading"> | 335 | elements.·Therefore,·the·arity·of·the·table·is·3.</p></section><h3·id="instrumentation-functions"·class="section-heading"> |
| 336 | ··<a·href="#instrumentation-functions"·class="hover-link"> | 336 | ··<a·href="#instrumentation-functions"·class="hover-link"> |
| 337 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 337 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 338 | ··</a> | 338 | ··</a> |
| 339 | ··<span·class="text">Instrumentation·Functions</span> | 339 | ··<span·class="text">Instrumentation·Functions</span> |
| 340 | </h3> | 340 | </h3> |
| 341 | <p>The·MIB·table·shown·in·the·previous·section·can·be·compiled·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">snmpc</span><span·class="p">:</span><span·class="nf">compile</span><span·class="p"·data-group-id=" | 341 | <p>The·MIB·table·shown·in·the·previous·section·can·be·compiled·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">snmpc</span><span·class="p">:</span><span·class="nf">compile</span><span·class="p"·data-group-id="9155023666-1">(</span><span·class="s">"EmpMIB"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9155023666-2">[</span><span·class="p"·data-group-id="9155023666-3">{</span><span·class="ss">db</span><span·class="[·...·truncated·by·diffoscope;·len:·212,·SHA:·e6bd8a0be231b9dd1e079219123d2c8e0ff4faea1508ab887c590fac659f4de3·...·]-1">)</span><span·class="p">.</span></code></pre><p>This·is·all·that·has·to·be·done!·Now·the·manager·can·read,·add,·and·modify |
| 342 | rows.·Also,·you·can·use·the·ordinary·Mnesia·API·to·access·the·table·from·your | 342 | rows.·Also,·you·can·use·the·ordinary·Mnesia·API·to·access·the·table·from·your |
| 343 | programs.·The·only·explicit·action·is·to·create·the·Mnesia·table,·an·action·the | 343 | programs.·The·only·explicit·action·is·to·create·the·Mnesia·table,·an·action·the |
| 344 | user·has·to·perform·in·order·to·create·the·required·table·schemas.</p><h3·id="adding-own-actions"·class="section-heading"> | 344 | user·has·to·perform·in·order·to·create·the·required·table·schemas.</p><h3·id="adding-own-actions"·class="section-heading"> |
| 345 | ··<a·href="#adding-own-actions"·class="hover-link"> | 345 | ··<a·href="#adding-own-actions"·class="hover-link"> |
| 346 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 346 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 347 | ··</a> | 347 | ··</a> |
| 348 | ··<span·class="text">Adding·Own·Actions</span> | 348 | ··<span·class="text">Adding·Own·Actions</span> |
| 349 | </h3> | 349 | </h3> |
| 350 | <p>It·is·often·necessary·to·take·some·specific·action·when·a·table·is·modified. | 350 | <p>It·is·often·necessary·to·take·some·specific·action·when·a·table·is·modified. |
| 351 | This·is·accomplished·with·an·instrumentation·function.·It·executes·some·specific | 351 | This·is·accomplished·with·an·instrumentation·function.·It·executes·some·specific |
| 352 | code·when·the·table·is·set,·and·passes·all·other·requests·down·to·the | 352 | code·when·the·table·is·set,·and·passes·all·other·requests·down·to·the |
| 353 | pre-defined·function.</p><p>The·following·example·illustrates·this·idea:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">emp_table</span><span·class="p"·data-group-id=" | 353 | pre-defined·function.</p><p>The·following·example·illustrates·this·idea:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">emp_table</span><span·class="p"·data-group-id="9571781069-1">(</span><span·class="ss">set</span><span·class="p">,</span><span·class="w">·</span><span·class="n">RowIndex</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cols</span><span·class="p"·data-group-id="9571781069-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 354 | ····</span><span·class="nf">notify_internal_resources</span><span·class="p"·data-group-id=" | 354 | ····</span><span·class="nf">notify_internal_resources</span><span·class="p"·data-group-id="9571781069-2">(</span><span·class="n">RowIndex</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cols</span><span·class="p"·data-group-id="9571781069-2">)</span><span·class="p">,</span><span·class="w"> |
| 355 | ····</span><span·class="nc">snmp_generic</span><span·class="p">:</span><span·class="nf">table_func</span><span·class="p"·data-group-id=" | 355 | ····</span><span·class="nc">snmp_generic</span><span·class="p">:</span><span·class="nf">table_func</span><span·class="p"·data-group-id="9571781069-3">(</span><span·class="ss">set</span><span·class="p">,</span><span·class="w">·</span><span·class="n">RowIndex</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cols</span><span·class="p">,</span><span·class="w">·</span><span[·...·truncated·by·diffoscope;·len:·252,·SHA:·07ad6c7c88cd3c0ca7e30b4b273b784aec9991e04b5a866d4fe043f007620a60·...·]-3">)</span><span·class="p">;</span><span·class="w"> |
| 356 | </span><span·class="nf">emp_table</span><span·class="p"·data-group-id=" | 356 | </span><span·class="nf">emp_table</span><span·class="p"·data-group-id="9571781069-5">(</span><span·class="n">Op</span><span·class="p">,</span><span·class="w">·</span><span·class="n">RowIndex</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cols</span><span·class="p"·data-group-id="9571781069-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 357 | ····</span><span·class="nc">snmp_generic</span><span·class="p">:</span><span·class="nf">table_func</span><span·class="p"·data-group-id=" | 357 | ····</span><span·class="nc">snmp_generic</span><span·class="p">:</span><span·class="nf">table_func</span><span·class="p"·data-group-id="9571781069-6">(</span><span·class="n">Op</span><span·class="p">,</span><span·class="w">·</span><span·class="n">RowIndex</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cols</span><span·class="p">,</span><span·class="w">·</span><span·c[·...·truncated·by·diffoscope;·len:·250,·SHA:·76ac922a49c2ebc93b2fb7e8ab2f7e0b9fbb9ec9b6b7069ea11ca123a910efa6·...·]-6">)</span><span·class="p">.</span></code></pre><p>The·default·instrumentation·functions·are·defined·in·the·module·<code·class="inline">snmp_generic</code>. |
| 358 | Refer·to·the·Reference·Manual,·section·SNMP,·module·<code·class="inline">snmp_generic</code>·for·details.</p><h3·id="extending-the-mnesia-table"·class="section-heading"> | 358 | Refer·to·the·Reference·Manual,·section·SNMP,·module·<code·class="inline">snmp_generic</code>·for·details.</p><h3·id="extending-the-mnesia-table"·class="section-heading"> |
| 359 | ··<a·href="#extending-the-mnesia-table"·class="hover-link"> | 359 | ··<a·href="#extending-the-mnesia-table"·class="hover-link"> |
| 360 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 360 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 361 | ··</a> | 361 | ··</a> |
| 362 | ··<span·class="text">Extending·the·Mnesia·Table</span> | 362 | ··<span·class="text">Extending·the·Mnesia·Table</span> |
| 363 | </h3> | 363 | </h3> |
| 364 | <p>A·table·may·contain·columns·that·are·used·internally,·but·should·not·be·visible | 364 | <p>A·table·may·contain·columns·that·are·used·internally,·but·should·not·be·visible |
| 365 | to·a·manager.·These·internal·columns·must·be·the·last·columns·in·the·table.·The | 365 | to·a·manager.·These·internal·columns·must·be·the·last·columns·in·the·table.·The |
| 366 | <code·class="inline">set</code>·operation·will·not·work·with·this·arrangement,·because·there·are·columns | 366 | <code·class="inline">set</code>·operation·will·not·work·with·this·arrangement,·because·there·are·columns |
| 367 | that·the·agent·does·not·know·about.·This·situation·is·handled·by·adding·values | 367 | that·the·agent·does·not·know·about.·This·situation·is·handled·by·adding·values |
| 368 | for·the·internal·columns·in·the·<code·class="inline">set</code>·function.</p><p>To·illustrate·this,·suppose·we·extend·our·Mnesia·<code·class="inline">empTable</code>·with·one·internal | 368 | for·the·internal·columns·in·the·<code·class="inline">set</code>·function.</p><p>To·illustrate·this,·suppose·we·extend·our·Mnesia·<code·class="inline">empTable</code>·with·one·internal |
| 369 | column.·We·create·it·as·before,·but·with·an·arity·of·4,·by·adding·another | 369 | column.·We·create·it·as·before,·but·with·an·arity·of·4,·by·adding·another |
| 370 | attribute.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id=" | 370 | attribute.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">mnesia</span><span·class="p">:</span><span·class="nf">create_table</span><span·class="p"·data-group-id="0588209531-1">(</span><span·class="p"·data-group-id="0588209531-2">[</span><span·class="p"·data-group-id="0588209531-3">{</span><span·class="ss">name</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">employees</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·22,·SHA:·af18b919b97cfe0b98db935abad4e590a30e8410ee1743cc5281b2cfb4cc4dc2·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 371 | ·····················</span><span·class="p"·data-group-id=" | 371 | ·····················</span><span·class="p"·data-group-id="0588209531-4">{</span><span·class="ss">snmp</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0588209531-5">[</span><span·class="p"·data-group-id="0588209531-6">{</span><span·class="ss">key</span><span·class="p">,</span><[·...·truncated·by·diffoscope;·len:·385,·SHA:·e1e90c130fda506c651b7f50ec4b3dc8968a5c09468a29f3af5ea505069629d1·...·]-4">}</span><span·class="p">,</span><span·class="w"> |
| 372 | ·····················</span><span·class="p"·data-group-id=" | 372 | ·····················</span><span·class="p"·data-group-id="0588209531-8">{</span><span·class="ss">attributes</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0588209531-9">{</span><span·class="ss">key</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">telno</[·...·truncated·by·diffoscope;·len:·371,·SHA:·ce0c549824aa20e17af834dc29b43d33ca9ac7c71fa0bf2e84f97ffd617f2dfd·...·]-1">)</span><span·class="p">.</span></code></pre><p>The·last·column·is·the·internal·column.·When·performing·a·<code·class="inline">set</code>·operation,·which |
| 373 | creates·a·row,·we·must·give·a·value·to·the·internal·column.·The·instrumentation | 373 | creates·a·row,·we·must·give·a·value·to·the·internal·column.·The·instrumentation |
| 374 | functions·will·now·look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id=" | 374 | functions·will·now·look·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="3808148644-1">(</span><span·class="ss">createAndGo</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">4</span><span·class="p"·data-group-id="3808148644-1">)</span><span·class="p">.</span><span·class="w"> |
| 375 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id=" | 375 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="3808148644-2">(</span><span·class="ss">createAndWait</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">5</span><span·class="p"·data-group-id="3808148644-2">)</span><span·class="p">.</span><span·class="w"> |
| 376 | </span><span·class="nf">emp_table</span><span·class="p"·data-group-id=" | 376 | </span><span·class="nf">emp_table</span><span·class="p"·data-group-id="3808148644-3">(</span><span·class="ss">set</span><span·class="p">,</span><span·class="w">·</span><span·class="n">RowIndex</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cols</span><span·class="p"·data-group-id="3808148644-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 377 | ··</span><span·class="nf">notify_internal_resources</span><span·class="p"·data-group-id=" | 377 | ··</span><span·class="nf">notify_internal_resources</span><span·class="p"·data-group-id="3808148644-4">(</span><span·class="n">RowIndex</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cols</span><span·class="p"·data-group-id="3808148644-4">)</span><span·class="p">,</span><span·class="w"> |
| 378 | ··</span><span·class="n">NewCols</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 378 | ··</span><span·class="n">NewCols</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 379 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">is_row_created</span><span·class="p"·data-group-id=" | 379 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">is_row_created</span><span·class="p"·data-group-id="3808148644-5">(</span><span·class="ss">empTable</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cols</span><span·class="p"·data-group-id="3808148644-5">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 380 | ······</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Cols</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="p"·data-group-id=" | 380 | ······</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Cols</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="p"·data-group-id="3808148644-6">[</span><span·class="p"·data-group-id="3808148644-7">{</span><span·class="mi">4</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"internal"</span><span·class="p"·data-group-id="3808148644-7">}</span><span·class=[·...·truncated·by·diffoscope;·len:·29,·SHA:·729205d280c23605b7d7b346cfcda1dee0c3372c5a501033c49eb033b15b1977·...·]-6">]</span><span·class="p">;</span><span·class="w">·</span><span·class="c1">%·add·internal·column</span><span·class="w"> |
| 381 | ······</span><span·class="ss">false</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Cols</span><span·class="w">······················</span><span·class="c1">%·keep·original·cols</span><span·class="w"> | 381 | ······</span><span·class="ss">false</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Cols</span><span·class="w">······················</span><span·class="c1">%·keep·original·cols</span><span·class="w"> |
| 382 | ··</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 382 | ··</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 383 | ··</span><span·class="nc">snmp_generic</span><span·class="p">:</span><span·class="nf">table_func</span><span·class="p"·data-group-id=" | 383 | ··</span><span·class="nc">snmp_generic</span><span·class="p">:</span><span·class="nf">table_func</span><span·class="p"·data-group-id="3808148644-8">(</span><span·class="ss">set</span><span·class="p">,</span><span·class="w">·</span><span·class="n">RowIndex</span><span·class="p">,</span><span·class="w">·</span><span·class="n">NewCols</span><span·class="p">,</span><span·class="w">·</span><s[·...·truncated·by·diffoscope;·len:·255,·SHA:·bbcc6cbaad52043fa21e104ae5b0b36c97341591581adac3010f273e71fd343c·...·]-8">)</span><span·class="p">;</span><span·class="w"> |
| 384 | </span><span·class="nf">emp_table</span><span·class="p"·data-group-id=" | 384 | </span><span·class="nf">emp_table</span><span·class="p"·data-group-id="3808148644-10">(</span><span·class="n">Op</span><span·class="p">,</span><span·class="w">·</span><span·class="n">RowIndex</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cols</span><span·class="p"·data-group-id="3808148644-10">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 385 | ··</span><span·class="nc">snmp_generic</span><span·class="p">:</span><span·class="nf">table_func</span><span·class="p"·data-group-id=" | 385 | ··</span><span·class="nc">snmp_generic</span><span·class="p">:</span><span·class="nf">table_func</span><span·class="p"·data-group-id="3808148644-11">(</span><span·class="n">Op</span><span·class="p">,</span><span·class="w">·</span><span·class="n">RowIndex</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cols</span><span·class="p">,</span><span·class="w">·</span><span·[·...·truncated·by·diffoscope;·len:·253,·SHA:·4911340decc27169390fef8e468d37d16ea992aca3dbc2db7622ae686a6a771f·...·]-11">)</span><span·class="p">.</span><span·class="w"> |
| 386 | </span><span·class="nf">is_row_created</span><span·class="p"·data-group-id=" | 386 | </span><span·class="nf">is_row_created</span><span·class="p"·data-group-id="3808148644-13">(</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cols</span><span·class="p"·data-group-id="3808148644-13">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 387 | ··</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">snmp_generic</span><span·class="p">:</span><span·class="nf">get_status_col</span><span·class="p"·data-group-id=" | 387 | ··</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">snmp_generic</span><span·class="p">:</span><span·class="nf">get_status_col</span><span·class="p"·data-group-id="3808148644-14">(</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cols</span><span·class="p"·data-group-id="3808148644-14">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 388 | ····</span><span·class="p"·data-group-id=" | 388 | ····</span><span·class="p"·data-group-id="3808148644-15">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="o">?</span><span·class="ss">createAndGo</span><span·class="p"·data-group-id="3808148644-15">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> |
| 389 | ····</span><span·class="p"·data-group-id=" | 389 | ····</span><span·class="p"·data-group-id="3808148644-16">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="o">?</span><span·class="ss">createAndWait</span><span·class="p"·data-group-id="3808148644-16">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> |
| 390 | ····</span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">false</span><span·class="w"> | 390 | ····</span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">false</span><span·class="w"> |
| 391 | ··</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>If·a·row·is·created,·we·always·set·the·internal·column·to·<code·class="inline">"internal"</code>.</p><h2·id="deviations-from-the-standard"·class="section-heading"> | 391 | ··</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>If·a·row·is·created,·we·always·set·the·internal·column·to·<code·class="inline">"internal"</code>.</p><h2·id="deviations-from-the-standard"·class="section-heading"> |
| 392 | ··<a·href="#deviations-from-the-standard"·class="hover-link"> | 392 | ··<a·href="#deviations-from-the-standard"·class="hover-link"> |
| 393 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 393 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 394 | ··</a> | 394 | ··</a> |
| 395 | ··<span·class="text">Deviations·from·the·Standard</span> | 395 | ··<span·class="text">Deviations·from·the·Standard</span> |
| 396 | </h2> | 396 | </h2> |
| Offset 146, 38 lines modified | Offset 146, 38 lines modified | ||
| 146 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 146 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 147 | ··</a> | 147 | ··</a> |
| 148 | ··<span·class="text">Agent·Information</span> | 148 | ··<span·class="text">Agent·Information</span> |
| 149 | </h2> | 149 | </h2> |
| 150 | <p>The·agent·information·should·be·stored·in·a·file·called·<code·class="inline">agent.conf</code>.</p><p>Each·entry·is·a·tuple·of·size·two:</p><p><code·class="inline">{AgentVariable,·Value}.</code></p><ul><li><code·class="inline">AgentVariable</code>·is·one·of·the·variables·in·SNMP-FRAMEWORK-MIB·or·one·of·the | 150 | <p>The·agent·information·should·be·stored·in·a·file·called·<code·class="inline">agent.conf</code>.</p><p>Each·entry·is·a·tuple·of·size·two:</p><p><code·class="inline">{AgentVariable,·Value}.</code></p><ul><li><code·class="inline">AgentVariable</code>·is·one·of·the·variables·in·SNMP-FRAMEWORK-MIB·or·one·of·the |
| 151 | internal·variables·<code·class="inline">intAgentUDPPort</code>,·which·defines·which·UDP·port·the·agent | 151 | internal·variables·<code·class="inline">intAgentUDPPort</code>,·which·defines·which·UDP·port·the·agent |
| 152 | listens·to,·or·<code·class="inline">intAgentTransports</code>,·which·defines·the·transport·domains·and | 152 | listens·to,·or·<code·class="inline">intAgentTransports</code>,·which·defines·the·transport·domains·and |
| 153 | addresses·of·the·agent.</li><li><code·class="inline">Value</code>·is·the·value·for·the·variable.</li></ul><p>The·following·example·shows·an·<code·class="inline">agent.conf</code>·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 153 | addresses·of·the·agent.</li><li><code·class="inline">Value</code>·is·the·value·for·the·variable.</li></ul><p>The·following·example·shows·an·<code·class="inline">agent.conf</code>·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="6320393442-1">{</span><span·class="ss">intAgentUDPPort</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">4000</span><span·class="p"·data-group-id="6320393442-1">}</span><span·class="p">.</span><span·class="w"> |
| 154 | </span><span·class="p"·data-group-id=" | 154 | </span><span·class="p"·data-group-id="6320393442-2">{</span><span·class="ss">intAgentTransports</span><span·class="p">,</span><span·class="w"> |
| 155 | ·</span><span·class="p"·data-group-id=" | 155 | ·</span><span·class="p"·data-group-id="6320393442-3">[</span><span·class="p"·data-group-id="6320393442-4">{</span><span·class="ss">transportDomainUdpIpv4</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6320393442-5">{</span><span·class="mi">141</span><span·c[·...·truncated·by·diffoscope;·len:·238,·SHA:·75cf8d1065380708c2b62d5ed34e37e36f6f4ea061fb61e41b9690ecabbc18c9·...·]-4">}</span><span·class="p">,</span><span·class="w"> |
| 156 | ··</span><span·class="p"·data-group-id=" | 156 | ··</span><span·class="p"·data-group-id="6320393442-6">{</span><span·class="ss">transportDomainUdpIpv6</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6320393442-7">{</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="[·...·truncated·by·diffoscope;·len:·481,·SHA:·bf178230f4cf2adba6f946d2ef4fa7aea85db0c0bbb4d5821aafe76c25c2e5d8·...·]-2">}</span><span·class="p">.</span><span·class="w"> |
| 157 | </span><span·class="p"·data-group-id=" | 157 | </span><span·class="p"·data-group-id="6320393442-8">{</span><span·class="ss">snmpEngineID</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"mbj's·engine"</span><span·class="p"·data-group-id="6320393442-8">}</span><span·class="p">.</span><span·class="w"> |
| 158 | </span><span·class="p"·data-group-id=" | 158 | </span><span·class="p"·data-group-id="6320393442-9">{</span><span·class="ss">snmpEngineMaxMessageSize</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">484</span><span·class="p"·data-group-id="6320393442-9">}</span><span·class="p">.</span></code></pre><p>And·this·is·a·code·(snippet)·example·of·how·to·generate·this·file·in·runtime:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">AgentDir</span><span·class="w">····</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"/tmp"</span><span·class="p">,</span><span·class="w"> |
| 159 | </span><span·class="n">AgentPort</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">4000</span><span·class="p">,</span><span·class="w"> | 159 | </span><span·class="n">AgentPort</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">4000</span><span·class="p">,</span><span·class="w"> |
| 160 | </span><span·class="n">Transports</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 160 | </span><span·class="n">Transports</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="1175104473-1">[</span><span·class="p"·data-group-id="1175104473-2">{</span><span·class="ss">transportDomainUdpIpv4</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1175104473-3">{</span><span·class="mi">141</span><span·c[·...·truncated·by·diffoscope;·len:·238,·SHA:·051d8fcb61cd3a64993f519b52a32ca7f13d7446cba115031326ee6a354fe970·...·]-2">}</span><span·class="p">,</span><span·class="w"> |
| 161 | ···············</span><span·class="p"·data-group-id=" | 161 | ···············</span><span·class="p"·data-group-id="1175104473-4">{</span><span·class="ss">transportDomainUdpIpv6</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1175104473-5">{</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="[·...·truncated·by·diffoscope;·len:·428,·SHA:·9e70c24c327d9b40a17676ca380933fbd9a69758429e4855eedb1a9c9cd44f2f·...·]-1">]</span><span·class="p">,</span><span·class="w"> |
| 162 | </span><span·class="n">EngineID</span><span·class="w">····</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"mbj's·engine"</span><span·class="p">,</span><span·class="w"> | 162 | </span><span·class="n">EngineID</span><span·class="w">····</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"mbj's·engine"</span><span·class="p">,</span><span·class="w"> |
| 163 | </span><span·class="n">MMS</span><span·class="w">·········</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">484</span><span·class="p">,</span><span·class="w"> | 163 | </span><span·class="n">MMS</span><span·class="w">·········</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">484</span><span·class="p">,</span><span·class="w"> |
| 164 | </span><span·class="n">AgentConfig</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 164 | </span><span·class="n">AgentConfig</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 165 | ···</span><span·class="p"·data-group-id=" | 165 | ···</span><span·class="p"·data-group-id="1175104473-6">[</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">agent_entry</span><span·class="p"·data-group-id="1175104473-7">(</span><span·class="ss">intAgentUDPPort</span><span·class="p">,</span><span·class="w">·········[·...·truncated·by·diffoscope;·len:·81,·SHA:·244651988b17abc44be01c53fd794d5ccbc02fc04fa11df4a2659a838d22a1fd·...·]-7">)</span><span·class="p">,</span><span·class="w"> |
| 166 | ····</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">agent_entry</span><span·class="p"·data-group-id=" | 166 | ····</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">agent_entry</span><span·class="p"·data-group-id="1175104473-8">(</span><span·class="ss">intAgentTransports</span><span·class="p">,</span><span·class="w">·······</span><span·class="n">Transports</span><span·class="p"·data-group-id="1175104473-8">)</span><span·class="p">,</span><span·class="w"> |
| 167 | ····</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">agent_entry</span><span·class="p"·data-group-id=" | 167 | ····</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">agent_entry</span><span·class="p"·data-group-id="1175104473-9">(</span><span·class="ss">snmpEngineID</span><span·class="p">,</span><span·class="w">·············</span><span·class="n">EngineID</span><span·class="p"·data-group-id="1175104473-9">)</span><span·class="p">,</span><span·class="w"> |
| 168 | ····</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">agent_entry</span><span·class="p"·data-group-id=" | 168 | ····</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">agent_entry</span><span·class="p"·data-group-id="1175104473-10">(</span><span·class="ss">snmpEngineMaxMessageSize</span><span·class="p">,</span><span·class="w">·</span><span·class="n">MMS</span><span·class="p"·data-group-id="1175104473-10">)</span><span·class="p"·data-group-id="1175104473-6">]</span><span·class="p">,</span><span·class="w"> |
| 169 | </span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">write_agent_config</span><span·class="p"·data-group-id=" | 169 | </span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">write_agent_config</span><span·class="p"·data-group-id="1175104473-11">(</span><span·class="n">AgentDir</span><span·class="p">,</span><span·class="w">·</span><span·class="n">AgentConfig</span><span·class="p"·data-group-id="1175104473-11">)</span><span·class="p">,</span></code></pre><p>These·are·the·supported·en[·...·truncated·by·diffoscope;·len:·435,·SHA:·b7e2b42029514a5920ff9174d5b628d5717b206dd1489c09f186d59e5430bddb·...·]-1">}</span><span·class="p">.</span><span·class="w">·····················</span><span·class="c1">%·Mandatory</span><span·class="w"> |
| 170 | ······</span><span·class="p"·data-group-id=" | 170 | ······</span><span·class="p"·data-group-id="1094589765-3">{</span><span·class="ss">snmpEngineMaxMessageSize</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">snmp_framework_mib</span><span·class="p">:</span><span·class="nf">max_message_size</span><span·class="p"·data-group-id="1[·...·truncated·by·diffoscope;·len:·115,·SHA:·5adf7675cde9766369c2c379aca5b9f8978c7f3a2b16f12cb8acb7d495a9c7ac·...·]-3">}</span><span·class="p">.</span><span·class="w">··</span><span·class="c1">%·Mandatory</span><span·class="w"> |
| 171 | ······</span><span·class="p"·data-group-id=" | 171 | ······</span><span·class="p"·data-group-id="1094589765-5">{</span><span·class="ss">intAgentUDPPort</span><span·class="p">,</span><span·class="w">··········</span><span·class="nc">inet</span><span·class="p">:</span><span·class="nf">port_number</span><span·class="p"·data-group-id="1094589765-6">(</spa[·...·truncated·by·diffoscope;·len:·96,·SHA:·9f91b0a24ccf9d6fe12957c80b7a896d4c72df689d47f67d5aed832bc1e392e0·...·]-5">}</span><span·class="p">.</span><span·class="w">······················</span><span·class="c1">%·Optional</span><span·class="w"> |
| 172 | ······</span><span·class="p"·data-group-id=" | 172 | ······</span><span·class="p"·data-group-id="1094589765-7">{</span><span·class="ss">intAgentTransports</span><span·class="p">,</span><span·class="w">·······</span><span·class="p"·data-group-id="1094589765-8">[</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">intAgentTr[·...·truncated·by·diffoscope;·len:·214,·SHA:·0fdd67336c884dfbf17471d790d3738359a6a1233f63ac0e555f5f5a9e50f306·...·]-7">}</span><span·class="p">.</span><span·class="w">···</span><span·class="c1">%·Mandatory</span></code></pre><p>If·a·"traditional"·transport·is·specified·(without·explicit·<code·class="inline">Kind</code>,·handling |
| 173 | both·requests·and·traps)·for·a·transport·domain,·its·<em>not</em>·possible·to·also | 173 | both·requests·and·traps)·for·a·transport·domain,·its·<em>not</em>·possible·to·also |
| 174 | specify·a·transport·(for·that·domain)·with·a·specific·<code·class="inline">Kind</code>.·This·is·for | 174 | specify·a·transport·(for·that·domain)·with·a·specific·<code·class="inline">Kind</code>.·This·is·for |
| 175 | example,·<em>not</em>·allowed:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="p"·data-group-id="5 | 175 | example,·<em>not</em>·allowed:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="p"·data-group-id="5347701165-1">[</span><span·class="p"·data-group-id="5347701165-2">{</span><span·class="ss">transportDomainUdpIpv4</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5347701165-3">{</span><span·class="p"·data-group-id="5347[·...·truncated·by·diffoscope;·len:·419,·SHA:·38c510e0f75de4e897e5854a2aefbed741e9ddd333c7b436a9c3bce3ac234f9f·...·]-2">}</span><span·class="p">,</span><span·class="w"> |
| 176 | ··</span><span·class="p"·data-group-id="5 | 176 | ··</span><span·class="p"·data-group-id="5347701165-5">{</span><span·class="ss">transportDomainUdpIpv4</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5347701165-6">{</span><span·class="p"·data-group-id="5347701165-7">{</span><span·class="mi">141</span><span·cl[·...·truncated·by·diffoscope;·len:·502,·SHA:·5a42ac14b30b64067c37f4182a97576c4a21446def7bcda33aa7309baa547433·...·]-1">]</span><span·class="p">.</span></code></pre><p>Note·that·only·one·transport·per·kind·for·each·transport·domain·can·be |
| 177 | configured.</p><p><code·class="inline">PortInfo</code>·<code·class="inline">system</code>·is·used·to·indicate·that·the·'system'·should·choose·(the·way | 177 | configured.</p><p><code·class="inline">PortInfo</code>·<code·class="inline">system</code>·is·used·to·indicate·that·the·'system'·should·choose·(the·way |
| 178 | port·number·'0'·(zero)·is·normally·used).·Port·info·'0'·(zero)·cannot·be·used | 178 | port·number·'0'·(zero)·is·normally·used).·Port·info·'0'·(zero)·cannot·be·used |
| 179 | for·this,·since·it·is·(internally)·used·to·represent·the·'default'·port·number.</p><p>In·the·traditional·transport·entries,·when·the·<code·class="inline">Addr</code>·value·does·not·contain·a | 179 | for·this,·since·it·is·(internally)·used·to·represent·the·'default'·port·number.</p><p>In·the·traditional·transport·entries,·when·the·<code·class="inline">Addr</code>·value·does·not·contain·a |
| 180 | port·number,·the·value·of·<code·class="inline">intAgentUDPPort</code>·is·used.</p><p>Note·that·the·(new)·extended·transport·entries·(including·<code·class="inline">Kind</code>·and·<code·class="inline">Opts</code>) | 180 | port·number,·the·value·of·<code·class="inline">intAgentUDPPort</code>·is·used.</p><p>Note·that·the·(new)·extended·transport·entries·(including·<code·class="inline">Kind</code>·and·<code·class="inline">Opts</code>) |
| 181 | <em>must</em>·specify·port-info·as·they·ignore·any·value·specified·by | 181 | <em>must</em>·specify·port-info·as·they·ignore·any·value·specified·by |
| 182 | <code·class="inline">intAgentUDPPort</code>.</p><p><code·class="inline">Opts</code>·is·the·same·as·for·the·<a·href="snmp_config.html#agent_ni_opts">net-if</a>·process | 182 | <code·class="inline">intAgentUDPPort</code>.</p><p><code·class="inline">Opts</code>·is·the·same·as·for·the·<a·href="snmp_config.html#agent_ni_opts">net-if</a>·process |
| 183 | <em>and</em>·takes·precedence·(for·that·transport)·if·present.·The·point·is·that·each | 183 | <em>and</em>·takes·precedence·(for·that·transport)·if·present.·The·point·is·that·each |
| Offset 190, 77 lines modified | Offset 190, 77 lines modified | ||
| 190 | ··</a> | 190 | ··</a> |
| 191 | ··<span·class="text">Contexts</span> | 191 | ··<span·class="text">Contexts</span> |
| 192 | </h2> | 192 | </h2> |
| 193 | <p>The·context·information·should·be·stored·in·a·file·called·<code·class="inline">context.conf</code>.·The | 193 | <p>The·context·information·should·be·stored·in·a·file·called·<code·class="inline">context.conf</code>.·The |
| 194 | default·context·<code·class="inline">""</code>·need·not·be·present.</p><p>Each·row·defines·a·context·in·the·agent.·This·information·is·used·in·the·table | 194 | default·context·<code·class="inline">""</code>·need·not·be·present.</p><p>Each·row·defines·a·context·in·the·agent.·This·information·is·used·in·the·table |
| 195 | <code·class="inline">vacmContextTable</code>·in·the·SNMP-VIEW-BASED-ACM-MIB.</p><p>Each·entry·is·a·term:</p><p><code·class="inline">ContextName.</code></p><ul><li><code·class="inline">ContextName</code>·is·a·string.</li></ul><p>And·this·is·a·code·(snippet)·example·of·how·to·generate·this·file·in·runtime:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">AgentDir</span><span·class="w">······</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"/tmp"</span><span·class="p">,</span><span·class="w"> | 195 | <code·class="inline">vacmContextTable</code>·in·the·SNMP-VIEW-BASED-ACM-MIB.</p><p>Each·entry·is·a·term:</p><p><code·class="inline">ContextName.</code></p><ul><li><code·class="inline">ContextName</code>·is·a·string.</li></ul><p>And·this·is·a·code·(snippet)·example·of·how·to·generate·this·file·in·runtime:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">AgentDir</span><span·class="w">······</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"/tmp"</span><span·class="p">,</span><span·class="w"> |
| 196 | </span><span·class="n">ContextConfig</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 196 | </span><span·class="n">ContextConfig</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 197 | ···</span><span·class="p"·data-group-id=" | 197 | ···</span><span·class="p"·data-group-id="0489468277-1">[</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">context_entry</span><span·class="p"·data-group-id="0489468277-2">(</span><span·class="s">"foo"</span><span·class="p"·data-group-id="0489468277-2">)</span><span·class="p">,</span><span·class="w"> |
| 198 | ····</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">context_entry</span><span·class="p"·data-group-id=" | 198 | ····</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">context_entry</span><span·class="p"·data-group-id="0489468277-3">(</span><span·class="s">"bar"</span><span·class="p"·data-group-id="0489468277-3">)</span><span·class="p"·data-group-id="0489468277-1">]</span><span·class="p">,</span><span·class="w"> |
| 199 | </span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">write_context_config</span><span·class="p"·data-group-id=" | 199 | </span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">write_context_config</span><span·class="p"·data-group-id="0489468277-4">(</span><span·class="n">AgentDir</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ContextConfig</span><span·class="p"·data-group-id="0489468277-4">)</span><span·class="p">,</span></code></pre><p><a·href=""·id="system_information"></a></p><h2·id="system-information"·class="section-heading"> |
| 200 | ··<a·href="#system-information"·class="hover-link"> | 200 | ··<a·href="#system-information"·class="hover-link"> |
| 201 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 201 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 202 | ··</a> | 202 | ··</a> |
| 203 | ··<span·class="text">System·Information</span> | 203 | ··<span·class="text">System·Information</span> |
| 204 | </h2> | 204 | </h2> |
| 205 | <p>The·system·information·should·be·stored·in·a·file·called·<code·class="inline">standard.conf</code>.</p><p>Each·entry·is·a·tuple·of·size·two:</p><p><code·class="inline">{SystemVariable,·Value}.</code></p><ul><li><code·class="inline">SystemVariable</code>·is·one·of·the·variables·in·the·system·group,·or | 205 | <p>The·system·information·should·be·stored·in·a·file·called·<code·class="inline">standard.conf</code>.</p><p>Each·entry·is·a·tuple·of·size·two:</p><p><code·class="inline">{SystemVariable,·Value}.</code></p><ul><li><code·class="inline">SystemVariable</code>·is·one·of·the·variables·in·the·system·group,·or |
| 206 | <code·class="inline">snmpEnableAuthenTraps</code>.</li><li><code·class="inline">Value</code>·is·the·value·for·the·variable.</li></ul><p>The·following·example·shows·a·valid·<code·class="inline">standard.conf</code>·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 206 | <code·class="inline">snmpEnableAuthenTraps</code>.</li><li><code·class="inline">Value</code>·is·the·value·for·the·variable.</li></ul><p>The·following·example·shows·a·valid·<code·class="inline">standard.conf</code>·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="4402428740-1">{</span><span·class="ss">sysDescr</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"Erlang·SNMP·agent"</span><span·class="p"·data-group-id="4402428740-1">}</span><span·class="p">.</span><span·class="w"> |
| 207 | </span><span·class="p"·data-group-id=" | 207 | </span><span·class="p"·data-group-id="4402428740-2">{</span><span·class="ss">sysObjectID</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4402428740-3">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span>[·...·truncated·by·diffoscope;·len:·119,·SHA:·51ac29a6464478279d8082228f0781dae9f77750bf2cc55cc44445bc27daeb99·...·]-2">}</span><span·class="p">.</span><span·class="w"> |
| 208 | </span><span·class="p"·data-group-id=" | 208 | </span><span·class="p"·data-group-id="4402428740-4">{</span><span·class="ss">sysContact</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"(mbj,eklas)@erlang.ericsson.se"</span><span·class="p"·data-group-id="4402428740-4">}</span><span·class="p">.</span><span·class="w"> |
| 209 | </span><span·class="p"·data-group-id=" | 209 | </span><span·class="p"·data-group-id="4402428740-5">{</span><span·class="ss">sysName</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"test"</span><span·class="p"·data-group-id="4402428740-5">}</span><span·class="p">.</span><span·class="w"> |
| 210 | </span><span·class="p"·data-group-id=" | 210 | </span><span·class="p"·data-group-id="4402428740-6">{</span><span·class="ss">sysServices</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">72</span><span·class="p"·data-group-id="4402428740-6">}</span><span·class="p">.</span><span·class="w"> |
| 211 | </span><span·class="p"·data-group-id=" | 211 | </span><span·class="p"·data-group-id="4402428740-7">{</span><span·class="ss">snmpEnableAuthenTraps</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">enabled</span><span·class="p"·data-group-id="4402428740-7">}</span><span·class="p">.</span></code></pre><p>And·this·is·a·code·(snippet)·example·of·how·to·generate·this·file·in·runtime:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">AgentDir</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"/tmp"</span><span·class="p">,</span><span·class="w"> |
| 212 | </span><span·class="n">StdConfig</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 212 | </span><span·class="n">StdConfig</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 213 | ···</span><span·class="p"·data-group-id=" | 213 | ···</span><span·class="p"·data-group-id="2537329175-1">[</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">standard_entry</span><span·class="p"·data-group-id="2537329175-2">(</span><span·class="ss">sysDescr</span><span·class="p">,</span><span·class="w">····</span><s[·...·truncated·by·diffoscope;·len:·91,·SHA:·2f23f8f2724d0b64a58adbaf059fb53e90770d52d8209c1f64413019c44096de·...·]-2">)</span><span·class="p">,</span><span·class="w"> |
| 214 | ····</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">standard_entry</span><span·class="p"·data-group-id=" | 214 | ····</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">standard_entry</span><span·class="p"·data-group-id="2537329175-3">(</span><span·class="ss">sysObjectID</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2537329175-4">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span>[·...·truncated·by·diffoscope;·len:·119,·SHA:·c7823ea836d66054eccc456fe52e22fd45b638e444aa8475e7faa4e0bcba92de·...·]-3">)</span><span·class="p">,</span><span·class="w"> |
| 215 | ····</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">standard_entry</span><span·class="p"·data-group-id=" | 215 | ····</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">standard_entry</span><span·class="p"·data-group-id="2537329175-5">(</span><span·class="ss">sysContact</span><span·class="p">,</span><span·class="w">··</span><span·class="s">"(mbj,eklas)@erlang.ericsson.se"</span><span·class="p"·data-group-id="2537329175-5">)</span><span·class="p">,</span><span·class="w"> |
| 216 | ····</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">standard_entry</span><span·class="p"·data-group-id=" | 216 | ····</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">standard_entry</span><span·class="p"·data-group-id="2537329175-6">(</span><span·class="ss">sysName</span><span·class="p">,</span><span·class="w">·····</span><span·class="s">"test"</span><span·class="p"·data-group-id="2537329175-6">)</span><span·class="p">,</span><span·class="w"> |
| 217 | ····</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">standard_entry</span><span·class="p"·data-group-id=" | 217 | ····</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">standard_entry</span><span·class="p"·data-group-id="2537329175-7">(</span><span·class="ss">sysServices</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">72</span><span·class="p"·data-group-id="2537329175-7">)</span><span·class="p">,</span><span·class="w"> |
| 218 | ····</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">standard_entry</span><span·class="p"·data-group-id=" | 218 | ····</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">standard_entry</span><span·class="p"·data-group-id="2537329175-8">(</span><span·class="ss">snmpEnableAuthenTraps</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">enabled</span><span·class="p"·data-group-id="2537329175-8">)</span><span·class="p"·data-group-id="2537329175-1">]</span><span·class="p">,</span><span·class="w"> |
| 219 | </span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">write_standard_config</span><span·class="p"·data-group-id=" | 219 | </span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">write_standard_config</span><span·class="p"·data-group-id="2537329175-9">(</span><span·class="n">AgentDir</span><span·class="p">,</span><span·class="w">·</span><span·class="n">StdConfig</span><span·class="p"·data-group-id="2537329175-9">)</span><span·class="p">,</span></code></pre><p>A·value·must·be·provided·for·all·variables,·which·lack·default·values·in·the |
| 220 | MIB.</p><p><a·href=""·id="community"></a></p><h2·id="communities"·class="section-heading"> | 220 | MIB.</p><p><a·href=""·id="community"></a></p><h2·id="communities"·class="section-heading"> |
| 221 | ··<a·href="#communities"·class="hover-link"> | 221 | ··<a·href="#communities"·class="hover-link"> |
| 222 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 222 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 223 | ··</a> | 223 | ··</a> |
| 224 | ··<span·class="text">Communities</span> | 224 | ··<span·class="text">Communities</span> |
| 225 | </h2> | 225 | </h2> |
| 226 | <p>The·community·information·should·be·stored·in·a·file·called·<code·class="inline">community.conf</code>.·It | 226 | <p>The·community·information·should·be·stored·in·a·file·called·<code·class="inline">community.conf</code>.·It |
| 227 | must·be·present·if·the·agent·is·configured·for·SNMPv1·or·SNMPv2c.</p><p>An·SNMP·<em>community</em>·is·a·relationship·between·an·SNMP·agent·and·a·set·of·SNMP | 227 | must·be·present·if·the·agent·is·configured·for·SNMPv1·or·SNMPv2c.</p><p>An·SNMP·<em>community</em>·is·a·relationship·between·an·SNMP·agent·and·a·set·of·SNMP |
| 228 | managers·that·defines·authentication,·access·control·and·proxy·characteristics.</p><p>The·corresponding·table·is·<code·class="inline">snmpCommunityTable</code>·in·the·SNMP-COMMUNITY-MIB.</p><p>Each·entry·is·a·term:</p><p><code·class="inline">{CommunityIndex,·CommunityName,·SecurityName,·ContextName,·TransportTag}.</code></p><ul><li><code·class="inline">CommunityIndex</code>·is·a·non-empty·string.</li><li><code·class="inline">CommunityName</code>·is·a·string.</li><li><code·class="inline">SecurityName</code>·is·a·string.</li><li><code·class="inline">ContextName</code>·is·a·string.</li><li><code·class="inline">TransportTag</code>·is·a·string.</li></ul><p>And·this·is·a·code·(snippet)·example·of·how·to·generate·this·file·in·runtime:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">AgentDir</span><span·class="w">········</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"/tmp"</span><span·class="p">,</span><span·class="w"> | 228 | managers·that·defines·authentication,·access·control·and·proxy·characteristics.</p><p>The·corresponding·table·is·<code·class="inline">snmpCommunityTable</code>·in·the·SNMP-COMMUNITY-MIB.</p><p>Each·entry·is·a·term:</p><p><code·class="inline">{CommunityIndex,·CommunityName,·SecurityName,·ContextName,·TransportTag}.</code></p><ul><li><code·class="inline">CommunityIndex</code>·is·a·non-empty·string.</li><li><code·class="inline">CommunityName</code>·is·a·string.</li><li><code·class="inline">SecurityName</code>·is·a·string.</li><li><code·class="inline">ContextName</code>·is·a·string.</li><li><code·class="inline">TransportTag</code>·is·a·string.</li></ul><p>And·this·is·a·code·(snippet)·example·of·how·to·generate·this·file·in·runtime:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">AgentDir</span><span·class="w">········</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"/tmp"</span><span·class="p">,</span><span·class="w"> |
| 229 | </span><span·class="n">CommunityConfig</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 229 | </span><span·class="n">CommunityConfig</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 230 | ···</span><span·class="p"·data-group-id=" | 230 | ···</span><span·class="p"·data-group-id="4780390897-1">[</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">community_entry</span><span·class="p"·data-group-id="4780390897-2">(</span><span·class="s">"public"</span><span·class="p"·data-group-id="4780390897-2">)</span><span·class="p">,</span><span·class="w"> |
| 231 | ····</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">community_entry</span><span·class="p"·data-group-id=" | 231 | ····</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">community_entry</span><span·class="p"·data-group-id="4780390897-3">(</span><span·class="s">"all-rights"</span><span·class="p"·data-group-id="4780390897-3">)</span><span·class="p">,</span><span·class="w"> |
| 232 | ····</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">community_entry</span><span·class="p"·data-group-id=" | 232 | ····</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">community_entry</span><span·class="p"·data-group-id="4780390897-4">(</span><span·class="s">"standard·trap"</span><span·class="p">,</span><span·class="w"> |
| 233 | ·······························</span><span·class="s">"standard·trap"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"initial"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">""</span><span·class="p">,</span><span·class="w">·</span><span·class="s">""</span><span·class="p"·data-group-id=" | 233 | ·······························</span><span·class="s">"standard·trap"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"initial"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">""</span><span·class="p">,</span><span·class="w">·</span><span·class="s">""</span><span·class="p"·data-group-id="4780390897-4">)</span><span·class="p"·data-group-id="4780390897-1">]</span><span·class="p">,</span><span·class="w"> |
| 234 | </span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">write_community_config</span><span·class="p"·data-group-id=" | 234 | </span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">write_community_config</span><span·class="p"·data-group-id="4780390897-5">(</span><span·class="n">AgentDir</span><span·class="p">,</span><span·class="w">·</span><span·class="n">CommunityConfig</span><span·class="p"·data-group-id="4780390897-5">)</span><span·class="p">,</span></code></pre><p><a·href=""·id="vacm"></a></p><h2·id="mib-views-for-vacm"·class="section-heading"> |
| 235 | ··<a·href="#mib-views-for-vacm"·class="hover-link"> | 235 | ··<a·href="#mib-views-for-vacm"·class="hover-link"> |
| 236 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 236 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 237 | ··</a> | 237 | ··</a> |
| 238 | ··<span·class="text">MIB·Views·for·VACM</span> | 238 | ··<span·class="text">MIB·Views·for·VACM</span> |
| 239 | </h2> | 239 | </h2> |
| 240 | <p>The·information·about·MIB·Views·for·VACM·should·be·stored·in·a·file·called | 240 | <p>The·information·about·MIB·Views·for·VACM·should·be·stored·in·a·file·called |
| 241 | <code·class="inline">vacm.conf</code>.</p><p>The·corresponding·tables·are·<code·class="inline">vacmSecurityToGroupTable</code>,·<code·class="inline">vacmAccessTable</code>·and | 241 | <code·class="inline">vacm.conf</code>.</p><p>The·corresponding·tables·are·<code·class="inline">vacmSecurityToGroupTable</code>,·<code·class="inline">vacmAccessTable</code>·and |
| 242 | <code·class="inline">vacmViewTreeFamilyTable</code>·in·the·SNMP-VIEW-BASED-ACM-MIB.</p><p>Each·entry·is·one·of·the·terms,·one·entry·corresponds·to·one·row·in·one·of·the | 242 | <code·class="inline">vacmViewTreeFamilyTable</code>·in·the·SNMP-VIEW-BASED-ACM-MIB.</p><p>Each·entry·is·one·of·the·terms,·one·entry·corresponds·to·one·row·in·one·of·the |
| 243 | tables.</p><p><code·class="inline">{vacmSecurityToGroup,·SecModel,·SecName,·GroupName}.</code></p><p><code·class="inline">{vacmAccess,·GroupName,·Prefix,·SecModel,·SecLevel,·Match,·ReadView,·WriteView,·NotifyView}.</code></p><p><code·class="inline">{vacmViewTreeFamily,·ViewIndex,·ViewSubtree,·ViewStatus,·ViewMask}.</code></p><ul><li><code·class="inline">SecModel</code>·is·<code·class="inline">any</code>,·<code·class="inline">v1</code>,·<code·class="inline">v2c</code>,·or·<code·class="inline">usm</code>.</li><li><code·class="inline">SecName</code>·is·a·string.</li><li><code·class="inline">GroupName</code>·is·a·string.</li><li><code·class="inline">Prefix</code>·is·a·string.</li><li><code·class="inline">SecLevel</code>·is·<code·class="inline">noAuthNoPriv</code>,·<code·class="inline">authNoPriv</code>,·or·<code·class="inline">authPriv</code></li><li><code·class="inline">Match</code>·is·<code·class="inline">prefix</code>·or·<code·class="inline">exact</code>.</li><li><code·class="inline">ReadView</code>·is·a·string.</li><li><code·class="inline">WriteView</code>·is·a·string.</li><li><code·class="inline">NotifyView</code>·is·a·string.</li><li><code·class="inline">ViewIndex</code>·is·an·integer.</li><li><code·class="inline">ViewSubtree</code>·is·a·list·of·integer.</li><li><code·class="inline">ViewStatus</code>·is·either·<code·class="inline">included</code>·or·<code·class="inline">excluded</code></li><li><code·class="inline">ViewMask</code>·is·either·<code·class="inline">null</code>·or·a·list·of·ones·and·zeros.·Ones·nominate·that·an | 243 | tables.</p><p><code·class="inline">{vacmSecurityToGroup,·SecModel,·SecName,·GroupName}.</code></p><p><code·class="inline">{vacmAccess,·GroupName,·Prefix,·SecModel,·SecLevel,·Match,·ReadView,·WriteView,·NotifyView}.</code></p><p><code·class="inline">{vacmViewTreeFamily,·ViewIndex,·ViewSubtree,·ViewStatus,·ViewMask}.</code></p><ul><li><code·class="inline">SecModel</code>·is·<code·class="inline">any</code>,·<code·class="inline">v1</code>,·<code·class="inline">v2c</code>,·or·<code·class="inline">usm</code>.</li><li><code·class="inline">SecName</code>·is·a·string.</li><li><code·class="inline">GroupName</code>·is·a·string.</li><li><code·class="inline">Prefix</code>·is·a·string.</li><li><code·class="inline">SecLevel</code>·is·<code·class="inline">noAuthNoPriv</code>,·<code·class="inline">authNoPriv</code>,·or·<code·class="inline">authPriv</code></li><li><code·class="inline">Match</code>·is·<code·class="inline">prefix</code>·or·<code·class="inline">exact</code>.</li><li><code·class="inline">ReadView</code>·is·a·string.</li><li><code·class="inline">WriteView</code>·is·a·string.</li><li><code·class="inline">NotifyView</code>·is·a·string.</li><li><code·class="inline">ViewIndex</code>·is·an·integer.</li><li><code·class="inline">ViewSubtree</code>·is·a·list·of·integer.</li><li><code·class="inline">ViewStatus</code>·is·either·<code·class="inline">included</code>·or·<code·class="inline">excluded</code></li><li><code·class="inline">ViewMask</code>·is·either·<code·class="inline">null</code>·or·a·list·of·ones·and·zeros.·Ones·nominate·that·an |
| 244 | exact·match·is·used·for·this·sub-identifier.·Zeros·are·wild-cards·which·match | 244 | exact·match·is·used·for·this·sub-identifier.·Zeros·are·wild-cards·which·match |
| 245 | any·sub-identifier.·If·the·mask·is·shorter·than·the·sub-tree,·the·tail·is | 245 | any·sub-identifier.·If·the·mask·is·shorter·than·the·sub-tree,·the·tail·is |
| 246 | regarded·as·all·ones.·<code·class="inline">null</code>·is·shorthand·for·a·mask·with·all·ones.</li></ul><p>And·this·is·a·code·(snippet)·example·of·how·to·generate·this·file·in·runtime:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">AgentDir</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"/tmp"</span><span·class="p">,</span><span·class="w"> | 246 | regarded·as·all·ones.·<code·class="inline">null</code>·is·shorthand·for·a·mask·with·all·ones.</li></ul><p>And·this·is·a·code·(snippet)·example·of·how·to·generate·this·file·in·runtime:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">AgentDir</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"/tmp"</span><span·class="p">,</span><span·class="w"> |
| 247 | </span><span·class="n">SecName</span><span·class="w">····</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"plain"</span><span·class="p">,</span><span·class="w"> | 247 | </span><span·class="n">SecName</span><span·class="w">····</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"plain"</span><span·class="p">,</span><span·class="w"> |
| 248 | </span><span·class="n">VacmConfig</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 248 | </span><span·class="n">VacmConfig</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 249 | ···</span><span·class="p"·data-group-id=" | 249 | ···</span><span·class="p"·data-group-id="3580114267-1">[</span><span·class="c1">%%························SecModel,·SecName,·GroupName</span><span·class="w"> |
| 250 | ····</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">vacm_s2g_entry</span><span·class="p"·data-group-id=" | 250 | ····</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">vacm_s2g_entry</span><span·class="p"·data-group-id="3580114267-2">(</span><span·class="ss">usm</span><span·class="p">,</span><span·class="w">·</span><span·class="n">SecName</span><span·class="p">,</span><span·class="w">·</span><span·class="n">SecName</span><span·class="p"·data-group-id="3580114267-2">)</span><span·class="p">,</span><span·class="w"> |
| 251 | ····</span><span·class="c1">%%························GroupName,·Prefix,·SecModel,</span><span·class="w"> | 251 | ····</span><span·class="c1">%%························GroupName,·Prefix,·SecModel,</span><span·class="w"> |
| 252 | ····</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">vacm_acc_entry</span><span·class="p"·data-group-id=" | 252 | ····</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">vacm_acc_entry</span><span·class="p"·data-group-id="3580114267-3">(</span><span·class="n">SecName</span><span·class="p">,</span><span·class="w">·</span><span·class="s">""</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">any</span><span·class="p">,</span><span·class="w"> |
| 253 | ····</span><span·class="c1">%%························SecLevel,·Match,·RV,·WV,·NV</span><span·class="w"> | 253 | ····</span><span·class="c1">%%························SecLevel,·Match,·RV,·WV,·NV</span><span·class="w"> |
| 254 | ······························</span><span·class="ss">noAuthNoPriv</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">exact</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"all"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"all"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"all"</span><span·class="p"·data-group-id=" | 254 | ······························</span><span·class="ss">noAuthNoPriv</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">exact</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"all"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"all"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"all"</span><span·class="p"·data-group-id="3580114267-3">)</span><span·class="p">,</span><span·class="w"> |
| 255 | ····</span><span·class="c1">%%························ViewName,·ViewSubtree,·ViewType,·ViewMask</span><span·class="w"> | 255 | ····</span><span·class="c1">%%························ViewName,·ViewSubtree,·ViewType,·ViewMask</span><span·class="w"> |
| 256 | ····</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">vacm_vtf_entry</span><span·class="p"·data-group-id=" | 256 | ····</span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">vacm_vtf_entry</span><span·class="p"·data-group-id="3580114267-4">(</span><span·class="s">"restricted"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3580114267-5">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">3</span><span·class="p[·...·truncated·by·diffoscope;·len:·387,·SHA:·4f278f27e0ab4845b25983113184043ab8419c4c6c189882c5839261279a5ea4·...·]-1">]</span><span·class="p">,</span><span·class="w"> |
| 257 | </span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">write_vacm_config</span><span·class="p"·data-group-id=" | 257 | </span><span·class="nc">snmpa_conf</span><span·class="p">:</span><span·class="nf">write_vacm_config</span><span·class="p"·data-group-id="3580114267-6">(</span><span·class="n">AgentDir</span><span·class="p">,</span><span·class="w">·</span><span·class="n">VacmConfig</span><span·class="p"·data-group-id="3580114267-6">)</span><span·class="p">,</span></code></pre><p><a·href=""·id="usm"></a></p><h2·id="security-data-for-usm"·class="section-heading"> |
| 258 | ··<a·href="#security-data-for-usm"·class="hover-link"> | 258 | ··<a·href="#security-data-for-usm"·class="hover-link"> |
| 259 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 259 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 260 | ··</a> | 260 | ··</a> |
| 261 | ··<span·class="text">Security·data·for·USM</span> | 261 | ··<span·class="text">Security·data·for·USM</span> |
| 262 | </h2> | 262 | </h2> |
| 263 | <p>The·information·about·Security·data·for·USM·should·be·stored·in·a·file·called | 263 | <p>The·information·about·Security·data·for·USM·should·be·stored·in·a·file·called |
| 264 | <code·class="inline">usm.conf</code>,·which·must·be·present·if·the·agent·is·configured·for·SNMPv3.</p><p>The·corresponding·table·is·<code·class="inline">usmUserTable</code>·in·the·SNMP-USER-BASED-SM-MIB | 264 | <code·class="inline">usm.conf</code>,·which·must·be·present·if·the·agent·is·configured·for·SNMPv3.</p><p>The·corresponding·table·is·<code·class="inline">usmUserTable</code>·in·the·SNMP-USER-BASED-SM-MIB |
| Offset 271, 43 lines modified | Offset 271, 43 lines modified | ||
| 271 | <code·class="inline">usmAesCfb128Protocol</code>.</p></li><li><p><code·class="inline">PrivKeyC</code>·is·a·string.</p></li><li><p><code·class="inline">OwnPrivKeyC</code>·is·a·string.</p></li><li><p><code·class="inline">Public</code>·is·a·string.</p></li><li><p><code·class="inline">AuthKey</code>·is·a·list·(of·integer).·This·is·the·User's·secret·localized | 271 | <code·class="inline">usmAesCfb128Protocol</code>.</p></li><li><p><code·class="inline">PrivKeyC</code>·is·a·string.</p></li><li><p><code·class="inline">OwnPrivKeyC</code>·is·a·string.</p></li><li><p><code·class="inline">Public</code>·is·a·string.</p></li><li><p><code·class="inline">AuthKey</code>·is·a·list·(of·integer).·This·is·the·User's·secret·localized |
| 272 | authentication·key.·It·is·not·visible·in·the·MIB.·The·length·(number·of | 272 | authentication·key.·It·is·not·visible·in·the·MIB.·The·length·(number·of |
| 273 | octets)·of·this·key·needs·to·be:</p><ul><li>16·if·<code·class="inline">usmHMACMD5AuthProtocol</code>.</li><li>20·if·<code·class="inline">usmHMACSHAAuthProtocol</code>.</li><li>28·if·<code·class="inline">usmHMAC128SHA224AuthProtocol</code>.</li><li>32·if·<code·class="inline">usmHMAC192SHA256AuthProtocol</code>.</li><li>48·if·<code·class="inline">usmHMAC256SHA384AuthProtocol</code>.</li><li>64·if·<code·class="inline">usmHMAC384SHA512AuthProtocol</code>.</li></ul></li><li><p><code·class="inline">PrivKey</code>·is·a·list·(of·integer).·This·is·the·User's·secret·localized | 273 | octets)·of·this·key·needs·to·be:</p><ul><li>16·if·<code·class="inline">usmHMACMD5AuthProtocol</code>.</li><li>20·if·<code·class="inline">usmHMACSHAAuthProtocol</code>.</li><li>28·if·<code·class="inline">usmHMAC128SHA224AuthProtocol</code>.</li><li>32·if·<code·class="inline">usmHMAC192SHA256AuthProtocol</code>.</li><li>48·if·<code·class="inline">usmHMAC256SHA384AuthProtocol</code>.</li><li>64·if·<code·class="inline">usmHMAC384SHA512AuthProtocol</code>.</li></ul></li><li><p><code·class="inline">PrivKey</code>·is·a·list·(of·integer).·This·is·the·User's·secret·localized |
| 274 | encryption·key.·It·is·not·visible·in·the·MIB.·The·length·of·this·key·needs·to | 274 | encryption·key.·It·is·not·visible·in·the·MIB.·The·length·of·this·key·needs·to |
| 275 | be·16·if·<code·class="inline">usmDESPrivProtocol</code>·or·<code·class="inline">usmAesCfb128Protocol</code>·is·used.</p></li></ul><p>And·this·is·a·code·(snippet)·example·of·how·to·generate·this·file·in·runtime:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">AgentDir</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"/tmp"</span><span·class="p">,</span><span·class="w"> | 275 | be·16·if·<code·class="inline">usmDESPrivProtocol</code>·or·<code·class="inline">usmAesCfb128Protocol</code>·is·used.</p></li></ul><p>And·this·is·a·code·(snippet)·example·of·how·to·generate·this·file·in·runtime:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">AgentDir</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"/tmp"</span><span·class="p">,</span><span·class="w"> |
| 276 | </span><span·class="n">EngineID</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"plain·engine"</span><span·class="w"> | 276 | </span><span·class="n">EngineID</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"plain·engine"</span><span·class="w"> |
| 277 | </span><span·class="n">Passwd</span><span·class="w">····</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"FooBar·Hoopla"</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%%·This·should·*obviously*·be·choosen·better</span><span·class="w"> | 277 | </span><span·class="n">Passwd</span><span·class="w">····</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"FooBar·Hoopla"</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%%·This·should·*obviously*·be·choosen·better</span><span·class="w"> |
| 278 | </span><span·class="n">Secret16</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">snmp</span><span·class="p">:</span><span·class="nf">passwd2localized_key</span><span·class="p"·data-group-id=" | 278 | </span><span·class="n">Secret16</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">snmp</span><span·class="p">:</span><span·class="nf">passwd2localized_key</span><span·class="p"·data-group-id="2346136175-1">(</span><span·class="nb">md5</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Passwd</span><span·class="p">,</span><span·class="w">·</span><span·class="n">EngineID</span><span·class="p"·data-group-id="2346136175-1">)</span><span·class="p">,</span><span·class="w"> |
| 279 | </span><span·class="n">Secret20</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">snmp</span><span·class="p">:</span><span·class="nf">passwd2localized_key</span><span·class="p"·data-group-id=" | 279 | </span><span·class="n">Secret20</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">snmp</span><span·class="p">:</span><span·class="nf">passwd2localized_key</span><span·class="p"·data-group-id="2346136175-2">(</span><span·class="ss">sha</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Passwd</span><span·class="p">,</span><span·class="w">·</span><span·class="n">EngineID</span><span·class="p"·data-group-id="2346136175-2">)</span><span·class="p">,</span><span·class="w"> |
| 280 | </span><span·class="n">UsmConfig</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 280 | </span><span·class="n">UsmConfig</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
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| Offset 304, 15 lines modified | Offset 304, 15 lines modified | ||
| 304 | This·MIB·can·be·used·with·any·SNMP·version.</li><li>SNMP-COMMUNITY-MIB,·which·defines·managed·objects·for·coexistence·of·SNMPv1 | 304 | This·MIB·can·be·used·with·any·SNMP·version.</li><li>SNMP-COMMUNITY-MIB,·which·defines·managed·objects·for·coexistence·of·SNMPv1 |
| 305 | and·SNMPv2c·with·SNMPv3.·This·MIB·is·only·useful·if·SNMPv1·or·SNMPv2c·is·used, | 305 | and·SNMPv2c·with·SNMPv3.·This·MIB·is·only·useful·if·SNMPv1·or·SNMPv2c·is·used, |
| 306 | possibly·in·combination·with·SNMPv3.</li><li>SNMP-USER-BASED-SM-MIB,·which·defines·managed·objects·for·authentication·and | 306 | possibly·in·combination·with·SNMPv3.</li><li>SNMP-USER-BASED-SM-MIB,·which·defines·managed·objects·for·authentication·and |
| 307 | privacy.·This·MIB·is·only·useful·with·SNMPv3.</li></ul><p>All·of·these·MIBs·should·be·loaded·into·the·Master·Agent.·Once·loaded,·these | 307 | privacy.·This·MIB·is·only·useful·with·SNMPv3.</li></ul><p>All·of·these·MIBs·should·be·loaded·into·the·Master·Agent.·Once·loaded,·these |
| 308 | MIBs·are·always·available·in·all·contexts.</p><p>The·ASN.1·code,·the·Erlang·source·code,·and·the·generated·<code·class="inline">.hrl</code>·files·for·them | 308 | MIBs·are·always·available·in·all·contexts.</p><p>The·ASN.1·code,·the·Erlang·source·code,·and·the·generated·<code·class="inline">.hrl</code>·files·for·them |
| 309 | are·provided·in·the·distribution·and·are·placed·in·the·directories·<code·class="inline">mibs</code>, | 309 | are·provided·in·the·distribution·and·are·placed·in·the·directories·<code·class="inline">mibs</code>, |
| 310 | <code·class="inline">src</code>,·and·<code·class="inline">include</code>,·respectively,·in·the·<code·class="inline">snmp</code>·application.</p><p>The·<code·class="inline">.hrl</code>·files·are·generated·with·<a·href="snmpc.html#mib_to_hrl/1"><code·class="inline">snmpc:mib_to_hrl/1</code></a>.·Include·these·files·in | 310 | <code·class="inline">src</code>,·and·<code·class="inline">include</code>,·respectively,·in·the·<code·class="inline">snmp</code>·application.</p><p>The·<code·class="inline">.hrl</code>·files·are·generated·with·<a·href="snmpc.html#mib_to_hrl/1"><code·class="inline">snmpc:mib_to_hrl/1</code></a>.·Include·these·files·in |
| 311 | your·code·as·in·the·following·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="79 | 311 | your·code·as·in·the·following·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="7916459481-1">(</span><span·class="s">"snmp/include/SNMPv2-MIB.hrl"</span><span·class="p"·data-group-id="7916459481-1">)</span><span·class="p">.</span></code></pre><p>The·initial·values·for·the·managed·objects·defined·in·these·tables,·are·read·at |
| 312 | start-up·from·a·set·of·configuration·files.·These·are·described·in | 312 | start-up·from·a·set·of·configuration·files.·These·are·described·in |
| 313 | <a·href="snmp_config.html">Configuration·Files</a>.</p><h3·id="standard-mib-and-snmpv2-mib"·class="section-heading"> | 313 | <a·href="snmp_config.html">Configuration·Files</a>.</p><h3·id="standard-mib-and-snmpv2-mib"·class="section-heading"> |
| 314 | ··<a·href="#standard-mib-and-snmpv2-mib"·class="hover-link"> | 314 | ··<a·href="#standard-mib-and-snmpv2-mib"·class="hover-link"> |
| 315 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 315 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 316 | ··</a> | 316 | ··</a> |
| 317 | ··<span·class="text">STANDARD-MIB·and·SNMPv2-MIB</span> | 317 | ··<span·class="text">STANDARD-MIB·and·SNMPv2-MIB</span> |
| 318 | </h3> | 318 | </h3> |
| Offset 465, 17 lines modified | Offset 465, 17 lines modified | ||
| 465 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 465 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 466 | ··</a> | 466 | ··</a> |
| 467 | ··<span·class="text">Notifications</span> | 467 | ··<span·class="text">Notifications</span> |
| 468 | </h2> | 468 | </h2> |
| 469 | <p>Notifications·are·defined·in·SMIv1·with·the·TRAP-TYPE·macro·in·the·definition·of | 469 | <p>Notifications·are·defined·in·SMIv1·with·the·TRAP-TYPE·macro·in·the·definition·of |
| 470 | an·MIB·(see·RFC1215).·The·corresponding·macro·in·SMIv2·is·NOTIFICATION-TYPE. | 470 | an·MIB·(see·RFC1215).·The·corresponding·macro·in·SMIv2·is·NOTIFICATION-TYPE. |
| 471 | When·an·application·decides·to·send·a·notification,·it·calls·one·of·the | 471 | When·an·application·decides·to·send·a·notification,·it·calls·one·of·the |
| 472 | following·functions:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">snmpa</span><span·class="p">:</span><span·class="nf">send_notification</span><span·class="p"·data-group-id=" | 472 | following·functions:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">snmpa</span><span·class="p">:</span><span·class="nf">send_notification</span><span·class="p"·data-group-id="4548112258-1">(</span><span·class="n">Agent</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Notification</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Receiver</span><span·class="w"> |
| 473 | ·······················</span><span·class="p"·data-group-id=" | 473 | ·······················</span><span·class="p"·data-group-id="4548112258-2">[</span><span·class="p">,</span><span·class="w">·</span><span·class="n">NotifyName</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ContextName</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Varbind[·...·truncated·by·diffoscope;·len:·102,·SHA:·64b24e0d4b6df5d3ec065a3cd23a731a7bd52a0c7df2864bc7270fee013114eb·...·]-1">)</span><span·class="w"> |
| 474 | </span><span·class="nc">snmpa</span><span·class="p">:</span><span·class="nf">send_trap</span><span·class="p"·data-group-id=" | 474 | </span><span·class="nc">snmpa</span><span·class="p">:</span><span·class="nf">send_trap</span><span·class="p"·data-group-id="4548112258-3">(</span><span·class="n">Agent</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Notification</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Community</span><span·class="w">·</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·286,·SHA:·3d93163fdf58087444433877d5e6cd3a0876f7a0564dc36e05916ef7f9df60e9·...·]-3">)</span></code></pre><p>providing·the·registered·name·or·process·identifier·of·the·agent·where·the·MIB, |
| 475 | which·defines·the·notification·is·loaded·and·the·symbolic·name·of·the | 475 | which·defines·the·notification·is·loaded·and·the·symbolic·name·of·the |
| 476 | notification.</p><p>If·the·<code·class="inline">send_notification/3,4</code>·function·is·used,·all·management·targets·are | 476 | notification.</p><p>If·the·<code·class="inline">send_notification/3,4</code>·function·is·used,·all·management·targets·are |
| 477 | selected,·as·defined·in·RFC2273.·The·<code·class="inline">Receiver</code>·parameter·defines·where·the | 477 | selected,·as·defined·in·RFC2273.·The·<code·class="inline">Receiver</code>·parameter·defines·where·the |
| 478 | agent·should·send·information·about·the·delivery·of·inform·requests.</p><p>If·the·<code·class="inline">send_notification/5</code>·function·is·used,·an·<code·class="inline">NotifyName</code>·must·be·provided. | 478 | agent·should·send·information·about·the·delivery·of·inform·requests.</p><p>If·the·<code·class="inline">send_notification/5</code>·function·is·used,·an·<code·class="inline">NotifyName</code>·must·be·provided. |
| 479 | This·parameter·is·used·as·an·index·in·the·<code·class="inline">snmpNotifyTable</code>,·and·the·management | 479 | This·parameter·is·used·as·an·index·in·the·<code·class="inline">snmpNotifyTable</code>,·and·the·management |
| 480 | targets·defined·by·that·single·entry·is·used.</p><p>The·<code·class="inline">send_notification/6</code>·function·is·the·most·general·version·of·the·function. | 480 | targets·defined·by·that·single·entry·is·used.</p><p>The·<code·class="inline">send_notification/6</code>·function·is·the·most·general·version·of·the·function. |
| 481 | A·<code·class="inline">ContextName</code>·must·be·specified,·from·which·the·notification·will·be·sent.·If | 481 | A·<code·class="inline">ContextName</code>·must·be·specified,·from·which·the·notification·will·be·sent.·If |
| Offset 136, 59 lines modified | Offset 136, 59 lines modified | ||
| 136 | ··<a·href="#configuration"·class="hover-link"> | 136 | ··<a·href="#configuration"·class="hover-link"> |
| 137 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 137 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 138 | ··</a> | 138 | ··</a> |
| 139 | ··<span·class="text">Configuration</span> | 139 | ··<span·class="text">Configuration</span> |
| 140 | </h2> | 140 | </h2> |
| 141 | <p>The·following·configuration·parameters·are·defined·for·the·SNMP·application. | 141 | <p>The·following·configuration·parameters·are·defined·for·the·SNMP·application. |
| 142 | Refer·to·application(3)·for·more·information·about·configuration·parameters.</p><p>The·snmp·part·of·the·config·file·specifying·the·configuration·parameters·is | 142 | Refer·to·application(3)·for·more·information·about·configuration·parameters.</p><p>The·snmp·part·of·the·config·file·specifying·the·configuration·parameters·is |
| 143 | basically·the·following·tuple:</p><pre><code·class="text">······{snmp,·snmp_components_config()}</code></pre><p>A·minimal·config·file·for·starting·a·node·with·both·a·manager·and·an·agent:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">······</span><span·class="p"·data-group-id=" | 143 | basically·the·following·tuple:</p><pre><code·class="text">······{snmp,·snmp_components_config()}</code></pre><p>A·minimal·config·file·for·starting·a·node·with·both·a·manager·and·an·agent:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">······</span><span·class="p"·data-group-id="5458237786-1">[</span><span·class="p"·data-group-id="5458237786-2">{</span><span·class="ss">snmp</span><span·class="p">,</span><span·class="w"> |
| 144 | ········</span><span·class="p"·data-group-id=" | 144 | ········</span><span·class="p"·data-group-id="5458237786-3">[</span><span·class="p"·data-group-id="5458237786-4">{</span><span·class="ss">agent</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5458237786-5">[</span><span·class="p"·data-group-id="5458237786-6">{</spa[·...·truncated·by·diffoscope;·len:·174,·SHA:·37f3d015a25d1dbfe3b8517ab4fb76582f1e4b84b4c0976234019a445f19c486·...·]-6">}</span><span·class="p">,</span><span·class="w"> |
| 145 | ··················</span><span·class="p"·data-group-id=" | 145 | ··················</span><span·class="p"·data-group-id="5458237786-7">{</span><span·class="ss">config</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5458237786-8">[</span><span·class="p"·data-group-id="5458237786-9">{</span><span·class="ss">dir</span><span·class="p">,</span[·...·truncated·by·diffoscope;·len:·333,·SHA:·0ce9a2ff92aafecf286575c85bedced2d431e38834e3334cc651f8b6ca5abf92·...·]-4">}</span><span·class="p">,</span><span·class="w"> |
| 146 | ·········</span><span·class="p"·data-group-id=" | 146 | ·········</span><span·class="p"·data-group-id="5458237786-10">{</span><span·class="ss">manager</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5458237786-11">[</span><span·class="p"·data-group-id="5458237786-12">{</span><span·class="ss">config</span><span·class="p">[·...·truncated·by·diffoscope;·len:·313,·SHA:·3dc3e5d73e1672333b1a78cf3a7aa432071d356060b1847732dc3d151c3f1d4c·...·]-14">}</span><span·class="p">,</span><span·class="w"> |
| 147 | ······························</span><span·class="p"·data-group-id=" | 147 | ······························</span><span·class="p"·data-group-id="5458237786-15">{</span><span·class="ss">db_dir</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"/tmp/snmp/manager/db"</span><span·class="p"·data-group-id="5458237786-15">}</span><span·class="p"·data-group-id="5458237786-13">[·...·truncated·by·diffoscope;·len:·264,·SHA:·e6488f89ccc19bc710fcfaa92959a49f05abae41ac0e6493dc3f7bbb7dce1cb0·...·]-2">}</span><span·class="w"> |
| 148 | ········</span><span·class="p"·data-group-id=" | 148 | ········</span><span·class="p"·data-group-id="5458237786-1">]</span><span·class="w"> |
| 149 | ·······</span><span·class="p">}</span><span·class="w"> | 149 | ·······</span><span·class="p">}</span><span·class="w"> |
| 150 | ······</span><span·class="p">]</span><span·class="p">.</span></code></pre><p>Each·snmp·component·has·its·own·set·of·configuration·parameters,·even·though | 150 | ······</span><span·class="p">]</span><span·class="p">.</span></code></pre><p>Each·snmp·component·has·its·own·set·of·configuration·parameters,·even·though |
| 151 | some·of·the·types·are·common·to·both·components.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">······</span><span·class="nf">snmp_components_config</span><span·class="p"·data-group-id="0306720617-1">(</span><span·class="p"·data-group-id="0306720617-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="0306720617-2">[</span><span·class="nf">snmp_component_config</span><span·class="p"·data-group-id="0306720617-3">(</span><span·class="p"·data-group-id="0306720617-3">)</span><span·class="p"·data-group-id="0306720617-2">]</span><span·class="w"> | ||
| 152 | 151 | some·of·the·types·are·common·to·both·components.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">······</span><span·class="nf">snmp_components_config</span><span·class="p"·data-group-id="5969950801-1">(</span><span·class="p"·data-group-i[·...·truncated·by·diffoscope;·len:·351,·SHA:·bb9f41a9143ee5c96b0d2ec4d06b98b29be4d51717e54c64b8183478c71a1a6e·...·]</span><span·class="w"> | |
| 152 | ······</span><span·class="nf">snmp_component_config</span><span·class="p"·data-group-id="5969950801-4">(</span><span·class="p"·data-group-id="5969950801-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="5969950801-5">{</span><span·class="ss">agent</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">agent_options</span><span·class="p"·data-group-id="5969950801-6">(</span><span·class="p"·data-group-id="5969950801-6">)</span><span·class="p"·data-group-id="5969950801-5">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="5969950801-7">{</span><span·class="ss">manager</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">manager_options</span><span·class="p"·data-group-id="5969950801-8">(</span><span·class="p"·data-group-id="5969950801-8">)</span><span·class="p"·data-group-id="5969950801-7">}</span><span·class="w"> | ||
| 153 | ······</span><span·class="nf">agent_options</span><span·class="p"·data-group-id=" | 153 | ······</span><span·class="nf">agent_options</span><span·class="p"·data-group-id="5969950801-9">(</span><span·class="p"·data-group-id="5969950801-9">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="5969950801-10">[</span><span·class="nf">agent_option</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·130,·SHA:·9d807c8593e4edee115bf95a9cc3ee556679f318ab9911f524c6c7e0ebf92b79·...·]-10">]</span><span·class="w"> |
| 154 | ······</span><span·class="nf">agent_option</span><span·class="p"·data-group-id=" | 154 | ······</span><span·class="nf">agent_option</span><span·class="p"·data-group-id="5969950801-12">(</span><span·class="p"·data-group-id="5969950801-12">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="5969950801-13">{</span><span·class="ss">restart_type</span><span·class="p">,[·...·truncated·by·diffoscope;·len:·220,·SHA:·b24acac9c8c5e38e979dba981cf1eb601f001489ebd55a5bd9a67b7c978e0020·...·]-13">}</span><span·class="w">·····</span><span·class="p">|</span><span·class="w"> |
| 155 | ·······················</span><span·class="p"·data-group-id=" | 155 | ·······················</span><span·class="p"·data-group-id="5969950801-15">{</span><span·class="ss">agent_type</span><span·class="p">,</span><span·class="w">·······</span><span·class="nf">agent_type</span><span·class="p"·data-group-id="5969950801-16">(</span><span·class="p"·data-group-id="5969950801-16">)</span><sp[·...·truncated·by·diffoscope;·len:·38,·SHA:·263466134c83202c35a2d49d5aabe031ab12b436fd51a25b7ec094dc65d378a5·...·]-15">}</span><span·class="w">·······</span><span·class="p">|</span><span·class="w"> |
| 156 | ·······················</span><span·class="p"·data-group-id=" | 156 | ·······················</span><span·class="p"·data-group-id="5969950801-17">{</span><span·class="ss">agent_verbosity</span><span·class="p">,</span><span·class="w">··</span><span·class="nf">verbosity</span><span·class="p"·data-group-id="5969950801-18">(</span><span·class="p"·data-group-id="5969950801-18">)</span><spa[·...·truncated·by·diffoscope;·len:·37,·SHA:·b74b1f2238ff8aacdff227371c9bc32942decbb03166691ac38fa5c150339cdc·...·]-17">}</span><span·class="w">········</span><span·class="p">|</span><span·class="w"> |
| 157 | ·······················</span><span·class="p"·data-group-id=" | 157 | ·······················</span><span·class="p"·data-group-id="5969950801-19">{</span><span·class="ss">discovery</span><span·class="p">,</span><span·class="w">········</span><span·class="nf">agent_discovery</span><span·class="p"·data-group-id="5969950801-20">(</span><span·class="p"·data-group-id="5969950801-20">)</spa[·...·truncated·by·diffoscope;·len:·43,·SHA:·873a66b72245cba8fa631942dbb693ad3b6000da01aa24a468f6ec8f713588ef·...·]-19">}</span><span·class="w">··</span><span·class="p">|</span><span·class="w"> |
| 158 | ·······················</span><span·class="p"·data-group-id=" | 158 | ·······················</span><span·class="p"·data-group-id="5969950801-21">{</span><span·class="ss">versions</span><span·class="p">,</span><span·class="w">·········</span><span·class="nf">versions</span><span·class="p"·data-group-id="5969950801-22">(</span><span·class="p"·data-group-id="5969950801-22">)</span><span[·...·truncated·by·diffoscope;·len:·36,·SHA:·694d0f2103e7abe5118bb7a36af6c5aeac0adc2e28e00b8f3bd9fa5ab0b2183d·...·]-21">}</span><span·class="w">·········</span><span·class="p">|</span><span·class="w"> |
| 159 | ·······················</span><span·class="p"·data-group-id=" | 159 | ·······················</span><span·class="p"·data-group-id="5969950801-23">{</span><span·class="ss">gb_max_vbs</span><span·class="p">,</span><span·class="w">·······</span><span·class="nf">gb_max_vbs</span><span·class="p"·data-group-id="5969950801-24">(</span><span·class="p"·data-group-id="5969950801-24">)</span><sp[·...·truncated·by·diffoscope;·len:·38,·SHA:·263466134c83202c35a2d49d5aabe031ab12b436fd51a25b7ec094dc65d378a5·...·]-23">}</span><span·class="w">·······</span><span·class="p">|</span><span·class="w"> |
| 160 | ·······················</span><span·class="p"·data-group-id=" | 160 | ·······················</span><span·class="p"·data-group-id="5969950801-25">{</span><span·class="ss">priority</span><span·class="p">,</span><span·class="w">·········</span><span·class="nf">priority</span><span·class="p"·data-group-id="5969950801-26">(</span><span·class="p"·data-group-id="5969950801-26">)</span><span[·...·truncated·by·diffoscope;·len:·36,·SHA:·694d0f2103e7abe5118bb7a36af6c5aeac0adc2e28e00b8f3bd9fa5ab0b2183d·...·]-25">}</span><span·class="w">·········</span><span·class="p">|</span><span·class="w"> |
| 161 | ·······················</span><span·class="p"·data-group-id=" | 161 | ·······················</span><span·class="p"·data-group-id="5969950801-27">{</span><span·class="ss">multi_threaded</span><span·class="p">,</span><span·class="w">···</span><span·class="nf">multi_threaded</span><span·class="p"·data-group-id="5969950801-28">(</span><span·class="p"·data-group-id="5969950801-28">)</span[·...·truncated·by·diffoscope;·len:·42,·SHA:·a331d05d280f624eca1bfe84f3c4aa3f18f7ec7ce5dc3a05d57af81e690e044f·...·]-27">}</span><span·class="w">···</span><span·class="p">|</span><span·class="w"> |
| 162 | ·······················</span><span·class="p"·data-group-id=" | 162 | ·······················</span><span·class="p"·data-group-id="5969950801-29">{</span><span·class="ss">db_dir</span><span·class="p">,</span><span·class="w">···········</span><span·class="nf">db_dir</span><span·class="p"·data-group-id="5969950801-30">(</span><span·class="p"·data-group-id="5969950801-30">)</span><span·c[·...·truncated·by·diffoscope;·len:·34,·SHA:·2d377160623ad42c4876f69853f95524f81ab3f1691e715d3a585257a50ec3a5·...·]-29">}</span><span·class="w">···········</span><span·class="p">|</span><span·class="w"> |
| 163 | ·······················</span><span·class="p"·data-group-id=" | 163 | ·······················</span><span·class="p"·data-group-id="5969950801-31">{</span><span·class="ss">db_init_error</span><span·class="p">,</span><span·class="w">····</span><span·class="nf">db_init_error</span><span·class="p"·data-group-id="5969950801-32">(</span><span·class="p"·data-group-id="5969950801-32">)</span>[·...·truncated·by·diffoscope;·len:·41,·SHA:·91b5f535d17c9930c53238c5810471d74cb3e5c30ab88abc409aac2ae6ce2c3b·...·]-31">}</span><span·class="w">····</span><span·class="p">|</span><span·class="w"> |
| 164 | ·······················</span><span·class="p"·data-group-id=" | 164 | ·······················</span><span·class="p"·data-group-id="5969950801-33">{</span><span·class="ss">local_db</span><span·class="p">,</span><span·class="w">·········</span><span·class="nf">local_db</span><span·class="p"·data-group-id="5969950801-34">(</span><span·class="p"·data-group-id="5969950801-34">)</span><span[·...·truncated·by·diffoscope;·len:·36,·SHA:·694d0f2103e7abe5118bb7a36af6c5aeac0adc2e28e00b8f3bd9fa5ab0b2183d·...·]-33">}</span><span·class="w">·········</span><span·class="p">|</span><span·class="w"> |
| 165 | ·······················</span><span·class="p"·data-group-id=" | 165 | ·······················</span><span·class="p"·data-group-id="5969950801-35">{</span><span·class="ss">net_if</span><span·class="p">,</span><span·class="w">···········</span><span·class="nf">agent_net_if</span><span·class="p"·data-group-id="5969950801-36">(</span><span·class="p"·data-group-id="5969950801-36">)</span><[·...·truncated·by·diffoscope;·len:·40,·SHA:·bb5f0597bc1d58ddd762b12e2edfcb22416068815cd4ad999558755190e19658·...·]-35">}</span><span·class="w">·····</span><span·class="p">|</span><span·class="w"> |
| 166 | ·······················</span><span·class="p"·data-group-id=" | 166 | ·······················</span><span·class="p"·data-group-id="5969950801-37">{</span><span·class="ss">mibs</span><span·class="p">,</span><span·class="w">·············</span><span·class="nf">mibs</span><span·class="p"·data-group-id="5969950801-38">(</span><span·class="p"·data-group-id="5969950801-38">)</span><span·cla[·...·truncated·by·diffoscope;·len:·32,·SHA:·60f3c0b65989c73c5dd19110bec7478e00df999b17da1598c4896b2389c3ea32·...·]-37">}</span><span·class="w">·············</span><span·class="p">|</span><span·class="w"> |
| 167 | ·······················</span><span·class="p"·data-group-id=" | 167 | ·······················</span><span·class="p"·data-group-id="5969950801-39">{</span><span·class="ss">mib_storage</span><span·class="p">,</span><span·class="w">······</span><span·class="nf">mib_storage</span><span·class="p"·data-group-id="5969950801-40">(</span><span·class="p"·data-group-id="5969950801-40">)</span><s[·...·truncated·by·diffoscope;·len:·39,·SHA:·1cac3832a67192e58dbaee0778d6004373d8727960adb644b2f3d122953664ae·...·]-39">}</span><span·class="w">······</span><span·class="p">|</span><span·class="w"> |
| 168 | ·······················</span><span·class="p"·data-group-id=" | 168 | ·······················</span><span·class="p"·data-group-id="5969950801-41">{</span><span·class="ss">mib_server</span><span·class="p">,</span><span·class="w">·······</span><span·class="nf">mib_server</span><span·class="p"·data-group-id="5969950801-42">(</span><span·class="p"·data-group-id="5969950801-42">)</span><sp[·...·truncated·by·diffoscope;·len:·38,·SHA:·263466134c83202c35a2d49d5aabe031ab12b436fd51a25b7ec094dc65d378a5·...·]-41">}</span><span·class="w">·······</span><span·class="p">|</span><span·class="w"> |
| 169 | ·······················</span><span·class="p"·data-group-id=" | 169 | ·······················</span><span·class="p"·data-group-id="5969950801-43">{</span><span·class="ss">audit_trail_log</span><span·class="p">,</span><span·class="w">··</span><span·class="nf">audit_trail_log</span><span·class="p"·data-group-id="5969950801-44">(</span><span·class="p"·data-group-id="5969950801-44">)</spa[·...·truncated·by·diffoscope;·len:·43,·SHA:·873a66b72245cba8fa631942dbb693ad3b6000da01aa24a468f6ec8f713588ef·...·]-43">}</span><span·class="w">··</span><span·class="p">|</span><span·class="w"> |
| 170 | ·······················</span><span·class="p"·data-group-id=" | 170 | ·······················</span><span·class="p"·data-group-id="5969950801-45">{</span><span·class="ss">error_report_mod</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">error_report_mod</span><span·class="p"·data-group-id="5969950801-46">(</span><span·class="p"·data-group-id="5969950801-46">)</sp[·...·truncated·by·diffoscope;·len:·44,·SHA:·2ae6a1cc4087af558841917112daaaa41bb65f30e3a3d920e190bc7f5d039672·...·]-45">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 171 | ·······················</span><span·class="p"·data-group-id=" | 171 | ·······················</span><span·class="p"·data-group-id="5969950801-47">{</span><span·class="ss">note_store</span><span·class="p">,</span><span·class="w">·······</span><span·class="nf">note_store</span><span·class="p"·data-group-id="5969950801-48">(</span><span·class="p"·data-group-id="5969950801-48">)</span><sp[·...·truncated·by·diffoscope;·len:·38,·SHA:·263466134c83202c35a2d49d5aabe031ab12b436fd51a25b7ec094dc65d378a5·...·]-47">}</span><span·class="w">·······</span><span·class="p">|</span><span·class="w"> |
| 172 | ·······················</span><span·class="p"·data-group-id=" | 172 | ·······················</span><span·class="p"·data-group-id="5969950801-49">{</span><span·class="ss">symbolic_store</span><span·class="p">,</span><span·class="w">···</span><span·class="nf">symbolic_store</span><span·class="p"·data-group-id="5969950801-50">(</span><span·class="p"·data-group-id="5969950801-50">)</span[·...·truncated·by·diffoscope;·len:·42,·SHA:·a331d05d280f624eca1bfe84f3c4aa3f18f7ec7ce5dc3a05d57af81e690e044f·...·]-49">}</span><span·class="w">···</span><span·class="p">|</span><span·class="w"> |
| 173 | ·······················</span><span·class="p"·data-group-id=" | 173 | ·······················</span><span·class="p"·data-group-id="5969950801-51">{</span><span·class="ss">target_cache</span><span·class="p">,</span><span·class="w">·····</span><span·class="nf">target_cache</span><span·class="p"·data-group-id="5969950801-52">(</span><span·class="p"·data-group-id="5969950801-52">)</span><[·...·truncated·by·diffoscope;·len:·40,·SHA:·bb5f0597bc1d58ddd762b12e2edfcb22416068815cd4ad999558755190e19658·...·]-51">}</span><span·class="w">·····</span><span·class="p">|</span><span·class="w"> |
| 174 | ·······················</span><span·class="p"·data-group-id="0306720617-53">{</span><span·class="ss">config</span><span·class="p">,</span><span·class="w">···········</span><span·class="nf">agent_config</span><span·class="p"·data-group-id="0306720617-54">(</span><span·class="p"·data-group-id="0306720617-54">)</span><span·class="p"·data-group-id="0306720617-53">}</span><span·class="w"> | ||
| 175 | ······ | 174 | ·······················</span><span·class="p"·data-group-id="5969950801-53">{</span><span·class="ss">config</span><span·class="p">,</span><span·class="w">···········</span><span·class="nf">agent_config</span><span·class="p"·data-group-id="5969950801-54">(</span>[·...·truncated·by·diffoscope;·len:·101,·SHA:·dc741332acc23e3ead6682dbd4117894ada4afde98c40bc0c64f722d964bd5ef·...·]</span><span·class="w"> |
| 175 | ······</span><span·class="nf">manager_options</span><span·class="p"·data-group-id="5969950801-55">(</span><span·class="p"·data-group-id="5969950801-55">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="5969950801-56">[</span><span·class="nf">manager_option</span><span·class="p"·data-group-id="5969950801-57">(</span><span·class="p"·data-group-id="5969950801-57">)</span><span·class="p"·data-group-id="5969950801-56">]</span><span·class="w"> | ||
| 176 | ······</span><span·class="nf">manager_option</span><span·class="p"·data-group-id=" | 176 | ······</span><span·class="nf">manager_option</span><span·class="p"·data-group-id="5969950801-58">(</span><span·class="p"·data-group-id="5969950801-58">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="5969950801-59">{</span><span·class="ss">restart_type</span><span·class="p">,[·...·truncated·by·diffoscope;·len:·228,·SHA:·21e7264abcfe8d2072f57a9e12f0d64958a3d225273e1a9c746587feaec3674a·...·]-59">}</span><span·class="w">····</span><span·class="p">|</span><span·class="w"> |
| 177 | ·························</span><span·class="p"·data-group-id=" | 177 | ·························</span><span·class="p"·data-group-id="5969950801-61">{</span><span·class="ss">net_if</span><span·class="p">,</span><span·class="w">···················</span><span·class="nf">manager_net_if</span><span·class="p"·data-group-id="5969950801-62">(</span><span·class="p"·data-group-id="5969950801-62"[·...·truncated·by·diffoscope;·len:·50,·SHA:·236ab605e5e877c13a7c8ee5718ddd4039a376dbfa9789d8752b52feab494257·...·]-61">}</span><span·class="w">··</span><span·class="p">|</span><span·class="w"> |
| 178 | ·························</span><span·class="p"·data-group-id=" | 178 | ·························</span><span·class="p"·data-group-id="5969950801-63">{</span><span·class="ss">server</span><span·class="p">,</span><span·class="w">···················</span><span·class="nf">server</span><span·class="p"·data-group-id="5969950801-64">(</span><span·class="p"·data-group-id="5969950801-64">)</span[·...·truncated·by·diffoscope;·len:·42,·SHA:·a331d05d280f624eca1bfe84f3c4aa3f18f7ec7ce5dc3a05d57af81e690e044f·...·]-63">}</span><span·class="w">··········</span><span·class="p">|</span><span·class="w"> |
| 179 | ·························</span><span·class="p"·data-group-id=" | 179 | ·························</span><span·class="p"·data-group-id="5969950801-65">{</span><span·class="ss">note_store</span><span·class="p">,</span><span·class="w">···············</span><span·class="nf">note_store</span><span·class="p"·data-group-id="5969950801-66">(</span><span·class="p"·data-group-id="5969950801-66">)</[·...·truncated·by·diffoscope;·len:·46,·SHA:·19b73610b45cc833d2b3da619959e3916518fac39b868d678cdbf2f3cee5ca77·...·]-65">}</span><span·class="w">······</span><span·class="p">|</span><span·class="w"> |
| 180 | ·························</span><span·class="p"·data-group-id=" | 180 | ·························</span><span·class="p"·data-group-id="5969950801-67">{</span><span·class="ss">config</span><span·class="p">,</span><span·class="w">···················</span><span·class="nf">manager_config</span><span·class="p"·data-group-id="5969950801-68">(</span><span·class="p"·data-group-id="5969950801-68"[·...·truncated·by·diffoscope;·len:·50,·SHA:·236ab605e5e877c13a7c8ee5718ddd4039a376dbfa9789d8752b52feab494257·...·]-67">}</span><span·class="w">··</span><span·class="p">|</span><span·class="w"> |
| 181 | ·························</span><span·class="p"·data-group-id=" | 181 | ·························</span><span·class="p"·data-group-id="5969950801-69">{</span><span·class="ss">inform_request_behaviour</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">manager_irb</span><span·class="p"·data-group-id="5969950801-70">(</span><span·class="p"·data-group-id="5969950801-70">)<[·...·truncated·by·diffoscope;·len:·47,·SHA:·d4d7721ea00a8c52a4d182d824d9a85828d0800d3f9a0a4656bf7b8965c27392·...·]-69">}</span><span·class="w">·····</span><span·class="p">|</span><span·class="w"> |
| 182 | ·························</span><span·class="p"·data-group-id=" | 182 | ·························</span><span·class="p"·data-group-id="5969950801-71">{</span><span·class="ss">mibs</span><span·class="p">,</span><span·class="w">·····················</span><span·class="nf">manager_mibs</span><span·class="p"·data-group-id="5969950801-72">(</span><span·class="p"·data-group-id="5969950801-72">)[·...·truncated·by·diffoscope;·len:·48,·SHA:·2e8eb7aeac49945efc9f2be1fc5fd2a87320584df32d6aa7d6b1a4ca0c277957·...·]-71">}</span><span·class="w">····</span><span·class="p">|</span><span·class="w"> |
| 183 | ·························</span><span·class="p"·data-group-id=" | 183 | ·························</span><span·class="p"·data-group-id="5969950801-73">{</span><span·class="ss">priority</span><span·class="p">,</span><span·class="w">·················</span><span·class="nf">priority</span><span·class="p"·data-group-id="5969950801-74">(</span><span·class="p"·data-group-id="5969950801-74">)</sp[·...·truncated·by·diffoscope;·len:·44,·SHA:·2ae6a1cc4087af558841917112daaaa41bb65f30e3a3d920e190bc7f5d039672·...·]-73">}</span><span·class="w">········</span><span·class="p">|</span><span·class="w"> |
| 184 | ·························</span><span·class="p"·data-group-id=" | 184 | ·························</span><span·class="p"·data-group-id="5969950801-75">{</span><span·class="ss">audit_trail_log</span><span·class="p">,</span><span·class="w">··········</span><span·class="nf">audit_trail_log</span><span·class="p"·data-group-id="5969950801-76">(</span><span·class="p"·data-group-id="5969950801-76[·...·truncated·by·diffoscope;·len:·51,·SHA:·2b296de2a3ea2a17e43acba077cc6b10b24e74a040cd89fd2a08ee03945d231d·...·]-75">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 185 | ·························</span><span·class="p"·data-group-id=" | 185 | ·························</span><span·class="p"·data-group-id="5969950801-77">{</span><span·class="ss">versions</span><span·class="p">,</span><span·class="w">·················</span><span·class="nf">versions</span><span·class="p"·data-group-id="5969950801-78">(</span><span·class="p"·data-group-id="5969950801-78">)</sp[·...·truncated·by·diffoscope;·len:·44,·SHA:·2ae6a1cc4087af558841917112daaaa41bb65f30e3a3d920e190bc7f5d039672·...·]-77">}</span><span·class="w">········</span><span·class="p">|</span><span·class="w"> |
| 186 | ·························</span><span·class="p"·data-group-id=" | 186 | ·························</span><span·class="p"·data-group-id="5969950801-79">{</span><span·class="ss">def_user_mod</span><span·class="p">,</span><span·class="w">·············</span><span·class="nf">def_user_module</span><span·class="p"·data-group-id="5969950801-80">(</span><span·class="p"·data-group-id="5969950801-80">)</span><span·class="w">··</span><span·class="p">|</span><span·class="w"> |
| 187 | ·························</span><span·class="p"·data-group-id=" | 187 | ·························</span><span·class="p"·data-group-id="5969950801-81">{</span><span·class="ss">def_user_data</span><span·class="p">,</span><span·class="w">············</span><span·class="nf">def_user_data</span><span·class="p"·data-group-id="5969950801-82">(</span><span·class="p"·data-group-id="5969950801-82">[·...·truncated·by·diffoscope;·len:·49,·SHA:·478175069942078f6d214922b4dd1efbe58e9ff4b3b247fcdf09734823fec8d2·...·]-81">}</span></code></pre><p><a·href=""·id="agent_opts_and_types"></a></p><p>Agent·specific·config·options·and·types:</p><ul><li><p><strong><code·class="inline"·id="agent_type">agent_type()·=·master·|·sub·<optional></code></strong>·-·If·<code·class="inline">master</code>, |
| 188 | one·master·agent·is·started.·Otherwise,·no·agents·are·started.</p><p>Default·is·<code·class="inline">master</code>.</p></li><li><p><strong><code·class="inline"·id="agent_disco">agent_discovery()·=·[agent_discovery_opt()]·<optional></code></strong>·- | 188 | one·master·agent·is·started.·Otherwise,·no·agents·are·started.</p><p>Default·is·<code·class="inline">master</code>.</p></li><li><p><strong><code·class="inline"·id="agent_disco">agent_discovery()·=·[agent_discovery_opt()]·<optional></code></strong>·- |
| 189 | <code·class="inline">agent_discovery_opt()·=·{terminating,·agent_terminating_discovery_opts()}·|·{originating,·agent_originating_discovery_opts()}</code></p><p>The·<code·class="inline">terminating</code>·options·effects·discovery·initiated·by·a·manager.</p><p>The·<code·class="inline">originating</code>·options·effects·discovery·initiated·by·this·agent.</p><p>For·defaults·see·the·options·in·<code·class="inline">agent_discovery_opt()</code>.</p></li><li><p><strong><code·class="inline"·id="agent_term_disco_opts">agent_terminating_discovery_opts()·=·[agent_terminating_discovery_opt()]·<optional></code></strong>·- | 189 | <code·class="inline">agent_discovery_opt()·=·{terminating,·agent_terminating_discovery_opts()}·|·{originating,·agent_originating_discovery_opts()}</code></p><p>The·<code·class="inline">terminating</code>·options·effects·discovery·initiated·by·a·manager.</p><p>The·<code·class="inline">originating</code>·options·effects·discovery·initiated·by·this·agent.</p><p>For·defaults·see·the·options·in·<code·class="inline">agent_discovery_opt()</code>.</p></li><li><p><strong><code·class="inline"·id="agent_term_disco_opts">agent_terminating_discovery_opts()·=·[agent_terminating_discovery_opt()]·<optional></code></strong>·- |
| 190 | <code·class="inline">agent_terminating_discovery_opt()·=·{enable,·boolean()}·|·{stage2,·discovery·|·plain}·|·{trigger_username,·string()}</code></p><p>These·are·options·effecting·discovery·<code·class="inline">terminating</code>·in·this·agent·(i.e. | 190 | <code·class="inline">agent_terminating_discovery_opt()·=·{enable,·boolean()}·|·{stage2,·discovery·|·plain}·|·{trigger_username,·string()}</code></p><p>These·are·options·effecting·discovery·<code·class="inline">terminating</code>·in·this·agent·(i.e. |
| 191 | initiated·by·a·manager).</p><p>The·default·values·for·the·<code·class="inline">terminating</code>·discovery·options·are:</p><ul><li>enable:·<code·class="inline">true</code></li><li>stage2:·<code·class="inline">discovery</code></li><li>trigger_username:·<code·class="inline">""</code></li></ul></li><li><p><strong><code·class="inline"·id="agent_orig_disco_opts">agent_originating_discovery_opts()·=·[agent_originating_discovery_opt()]·<optional></code></strong>·- | 191 | initiated·by·a·manager).</p><p>The·default·values·for·the·<code·class="inline">terminating</code>·discovery·options·are:</p><ul><li>enable:·<code·class="inline">true</code></li><li>stage2:·<code·class="inline">discovery</code></li><li>trigger_username:·<code·class="inline">""</code></li></ul></li><li><p><strong><code·class="inline"·id="agent_orig_disco_opts">agent_originating_discovery_opts()·=·[agent_originating_discovery_opt()]·<optional></code></strong>·- |
| 192 | <code·class="inline">agent_originating_discovery_opt()·=·{enable,·boolean()}</code></p><p>These·are·options·effecting·discovery·<code·class="inline">originating</code>·in·this·agent.</p><p>The·default·values·for·the·<code·class="inline">originating</code>·discovery·options·are:</p><ul><li>enable:·<code·class="inline">true</code></li></ul></li><li><p><strong><code·class="inline"·id="agent_mt">multi_threaded()·=·bool()·|·extended·<optional></code></strong>·-·If | 192 | <code·class="inline">agent_originating_discovery_opt()·=·{enable,·boolean()}</code></p><p>These·are·options·effecting·discovery·<code·class="inline">originating</code>·in·this·agent.</p><p>The·default·values·for·the·<code·class="inline">originating</code>·discovery·options·are:</p><ul><li>enable:·<code·class="inline">true</code></li></ul></li><li><p><strong><code·class="inline"·id="agent_mt">multi_threaded()·=·bool()·|·extended·<optional></code></strong>·-·If |
| 193 | <code·class="inline">true</code>·(or·<code·class="inline">extended</code>),·the·agent·is·multi-threaded,·with·one·thread·for·each | 193 | <code·class="inline">true</code>·(or·<code·class="inline">extended</code>),·the·agent·is·multi-threaded,·with·one·thread·for·each |
| 194 | get·request.</p><p>The·value·<code·class="inline">extended</code>·means·that·a·special·'process'·is·also·created·intended | 194 | get·request.</p><p>The·value·<code·class="inline">extended</code>·means·that·a·special·'process'·is·also·created·intended |
| Offset 141, 49 lines modified | Offset 141, 49 lines modified | ||
| 141 | <a·href="snmp_agent_config_files.html">Definition·of·Agent·Configuration·Files</a>·for·more | 141 | <a·href="snmp_agent_config_files.html">Definition·of·Agent·Configuration·Files</a>·for·more |
| 142 | information).</li><li>the·<em>database·directory</em>·stores·the·internal·database·files.</li></ul><p>The·following·directory·must·exist·in·the·system·to·run·the·manager:</p><ul><li>the·<em>configuration·directory</em>·stores·all·configuration·files·used·by·the | 142 | information).</li><li>the·<em>database·directory</em>·stores·the·internal·database·files.</li></ul><p>The·following·directory·must·exist·in·the·system·to·run·the·manager:</p><ul><li>the·<em>configuration·directory</em>·stores·all·configuration·files·used·by·the |
| 143 | manager·(refer·to·the·chapter | 143 | manager·(refer·to·the·chapter |
| 144 | <a·href="snmp_manager_config_files.html">Definition·of·Manager·Configuration·Files</a>·for | 144 | <a·href="snmp_manager_config_files.html">Definition·of·Manager·Configuration·Files</a>·for |
| 145 | more·information).</li><li>the·<em>database·directory</em>·stores·the·internal·database·files.</li></ul><p>The·agent·and·manager·uses·(application)·configuration·parameters·to·find·out | 145 | more·information).</li><li>the·<em>database·directory</em>·stores·the·internal·database·files.</li></ul><p>The·agent·and·manager·uses·(application)·configuration·parameters·to·find·out |
| 146 | where·these·directories·are·located.·The·parameters·should·be·defined·in·an | 146 | where·these·directories·are·located.·The·parameters·should·be·defined·in·an |
| 147 | Erlang·system·configuration·file.·The·following·configuration·parameters·are | 147 | Erlang·system·configuration·file.·The·following·configuration·parameters·are |
| 148 | defined·for·the·SNMP·application:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">······</span><span·class="nf">agent_options</span><span·class="p"·data-group-id=" | 148 | defined·for·the·SNMP·application:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">······</span><span·class="nf">agent_options</span><span·class="p"·data-group-id="4638392201-1">(</span><span·class="p"·data-group-id="4638392201-1">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4638392201-2">[</span><span·class="nf">agent_option</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·127,·SHA:·b79221ae61f66f6de197e82eb8bf8becf74fef7afebba01cc70815d60dcedfcd·...·]-2">]</span><span·class="w"> |
| 149 | ······</span><span·class="nf">agent_option</span><span·class="p"·data-group-id=" | 149 | ······</span><span·class="nf">agent_option</span><span·class="p"·data-group-id="4638392201-4">(</span><span·class="p"·data-group-id="4638392201-4">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4638392201-5">{</span><span·class="ss">restart_type</span><span·class="p">,</s[·...·truncated·by·diffoscope;·len:·215,·SHA:·ef4ac3832c63e9dbbfa05a2cb00d64acdb0354600c2c1a09cbd5ac695d7cff75·...·]-5">}</span><span·class="w">·····</span><span·class="p">|</span><span·class="w"> |
| 150 | ·······················</span><span·class="p"·data-group-id=" | 150 | ·······················</span><span·class="p"·data-group-id="4638392201-7">{</span><span·class="ss">agent_type</span><span·class="p">,</span><span·class="w">·······</span><span·class="nf">agent_type</span><span·class="p"·data-group-id="4638392201-8">(</span><span·class="p"·data-group-id="4638392201-8">)</span><span·[·...·truncated·by·diffoscope;·len:·35,·SHA:·92f3c1e688f1d338d3ed0c70502a0305ca56ae9cefcb39696b6d12d9e1013b1a·...·]-7">}</span><span·class="w">·······</span><span·class="p">|</span><span·class="w"> |
| 151 | ·······················</span><span·class="p"·data-group-id=" | 151 | ·······················</span><span·class="p"·data-group-id="4638392201-9">{</span><span·class="ss">agent_verbosity</span><span·class="p">,</span><span·class="w">··</span><span·class="nf">verbosity</span><span·class="p"·data-group-id="4638392201-10">(</span><span·class="p"·data-group-id="4638392201-10">)</span><span[·...·truncated·by·diffoscope;·len:·36,·SHA:·c25abed6ac4632983ad51d1fddac466846ca58666ed63679b0b5334c10447892·...·]-9">}</span><span·class="w">········</span><span·class="p">|</span><span·class="w"> |
| 152 | ·······················</span><span·class="p"·data-group-id=" | 152 | ·······················</span><span·class="p"·data-group-id="4638392201-11">{</span><span·class="ss">versions</span><span·class="p">,</span><span·class="w">·········</span><span·class="nf">versions</span><span·class="p"·data-group-id="4638392201-12">(</span><span·class="p"·data-group-id="4638392201-12">)</span><span[·...·truncated·by·diffoscope;·len:·36,·SHA:·c25abed6ac4632983ad51d1fddac466846ca58666ed63679b0b5334c10447892·...·]-11">}</span><span·class="w">·········</span><span·class="p">|</span><span·class="w"> |
| 153 | ·······················</span><span·class="p"·data-group-id=" | 153 | ·······················</span><span·class="p"·data-group-id="4638392201-13">{</span><span·class="ss">discovery</span><span·class="p">,</span><span·class="w">········</span><span·class="nf">agent_discovery</span><span·class="p"·data-group-id="4638392201-14">(</span><span·class="p"·data-group-id="4638392201-14">)</spa[·...·truncated·by·diffoscope;·len:·43,·SHA:·d76e00cbff115961aa33ee8d457b520e3a45c099d66f744b3660918d860a4783·...·]-13">}</span><span·class="w">··</span><span·class="p">|</span><span·class="w"> |
| 154 | ·······················</span><span·class="p"·data-group-id=" | 154 | ·······················</span><span·class="p"·data-group-id="4638392201-15">{</span><span·class="ss">gb_max_vbs</span><span·class="p">,</span><span·class="w">·······</span><span·class="nf">gb_max_vbs</span><span·class="p"·data-group-id="4638392201-16">(</span><span·class="p"·data-group-id="4638392201-16">)</span><sp[·...·truncated·by·diffoscope;·len:·38,·SHA:·de65ac4255f95eb26e1e1eb5b950262c928883cb541992eca2e1894e43ad4528·...·]-15">}</span><span·class="w">·······</span><span·class="p">|</span><span·class="w"> |
| 155 | ·······················</span><span·class="p"·data-group-id=" | 155 | ·······················</span><span·class="p"·data-group-id="4638392201-17">{</span><span·class="ss">priority</span><span·class="p">,</span><span·class="w">·········</span><span·class="nf">priority</span><span·class="p"·data-group-id="4638392201-18">(</span><span·class="p"·data-group-id="4638392201-18">)</span><span[·...·truncated·by·diffoscope;·len:·36,·SHA:·c25abed6ac4632983ad51d1fddac466846ca58666ed63679b0b5334c10447892·...·]-17">}</span><span·class="w">·········</span><span·class="p">|</span><span·class="w"> |
| 156 | ·······················</span><span·class="p"·data-group-id=" | 156 | ·······················</span><span·class="p"·data-group-id="4638392201-19">{</span><span·class="ss">multi_threaded</span><span·class="p">,</span><span·class="w">···</span><span·class="nf">multi_threaded</span><span·class="p"·data-group-id="4638392201-20">(</span><span·class="p"·data-group-id="4638392201-20">)</span[·...·truncated·by·diffoscope;·len:·42,·SHA:·bc3ec43bacadc37138452b90601fb4b06e8532b1d3b8e23af3956ed7afae0d85·...·]-19">}</span><span·class="w">···</span><span·class="p">|</span><span·class="w"> |
| 157 | ·······················</span><span·class="p"·data-group-id=" | 157 | ·······················</span><span·class="p"·data-group-id="4638392201-21">{</span><span·class="ss">db_dir</span><span·class="p">,</span><span·class="w">···········</span><span·class="nf">db_dir</span><span·class="p"·data-group-id="4638392201-22">(</span><span·class="p"·data-group-id="4638392201-22">)</span><span·c[·...·truncated·by·diffoscope;·len:·34,·SHA:·a65c21651727a0ffafa2982d186e3cd534629c49346ff11e9e1ce16308c7d0a8·...·]-21">}</span><span·class="w">···········</span><span·class="p">|</span><span·class="w"> |
| 158 | ·······················</span><span·class="p"·data-group-id=" | 158 | ·······················</span><span·class="p"·data-group-id="4638392201-23">{</span><span·class="ss">db_init_error</span><span·class="p">,</span><span·class="w">····</span><span·class="nf">db_init_error</span><span·class="p"·data-group-id="4638392201-24">(</span><span·class="p"·data-group-id="4638392201-24">)</span>[·...·truncated·by·diffoscope;·len:·41,·SHA:·7ad918e1c801d141dec64a93c349d61ee6168df7ce38ac9af8fb604205b56fdc·...·]-23">}</span><span·class="w">····</span><span·class="p">|</span><span·class="w"> |
| 159 | ·······················</span><span·class="p"·data-group-id=" | 159 | ·······················</span><span·class="p"·data-group-id="4638392201-25">{</span><span·class="ss">local_db</span><span·class="p">,</span><span·class="w">·········</span><span·class="nf">local_db</span><span·class="p"·data-group-id="4638392201-26">(</span><span·class="p"·data-group-id="4638392201-26">)</span><span[·...·truncated·by·diffoscope;·len:·36,·SHA:·c25abed6ac4632983ad51d1fddac466846ca58666ed63679b0b5334c10447892·...·]-25">}</span><span·class="w">·········</span><span·class="p">|</span><span·class="w"> |
| 160 | ·······················</span><span·class="p"·data-group-id=" | 160 | ·······················</span><span·class="p"·data-group-id="4638392201-27">{</span><span·class="ss">net_if</span><span·class="p">,</span><span·class="w">···········</span><span·class="nf">agent_net_if</span><span·class="p"·data-group-id="4638392201-28">(</span><span·class="p"·data-group-id="4638392201-28">)</span><[·...·truncated·by·diffoscope;·len:·40,·SHA:·f6e199e83682341e4919686f826e7762ff27f5a68c25f6a58d8e796a8613913a·...·]-27">}</span><span·class="w">·····</span><span·class="p">|</span><span·class="w"> |
| 161 | ·······················</span><span·class="p"·data-group-id=" | 161 | ·······················</span><span·class="p"·data-group-id="4638392201-29">{</span><span·class="ss">mibs</span><span·class="p">,</span><span·class="w">·············</span><span·class="nf">mibs</span><span·class="p"·data-group-id="4638392201-30">(</span><span·class="p"·data-group-id="4638392201-30">)</span><span·cla[·...·truncated·by·diffoscope;·len:·32,·SHA:·48c8cb390efa2bdda01eae7c1f185d38e533849f377ed448f4b90f0f3343694a·...·]-29">}</span><span·class="w">·············</span><span·class="p">|</span><span·class="w"> |
| 162 | ·······················</span><span·class="p"·data-group-id=" | 162 | ·······················</span><span·class="p"·data-group-id="4638392201-31">{</span><span·class="ss">mib_storage</span><span·class="p">,</span><span·class="w">······</span><span·class="nf">mib_storage</span><span·class="p"·data-group-id="4638392201-32">(</span><span·class="p"·data-group-id="4638392201-32">)</span><s[·...·truncated·by·diffoscope;·len:·39,·SHA:·f625b1ddb03fb5a66f8dbc40efd8349e8390e32920853c37a27f739c72f24c2f·...·]-31">}</span><span·class="w">······</span><span·class="p">|</span><span·class="w"> |
| 163 | ·······················</span><span·class="p"·data-group-id=" | 163 | ·······················</span><span·class="p"·data-group-id="4638392201-33">{</span><span·class="ss">mib_server</span><span·class="p">,</span><span·class="w">·······</span><span·class="nf">mib_server</span><span·class="p"·data-group-id="4638392201-34">(</span><span·class="p"·data-group-id="4638392201-34">)</span><sp[·...·truncated·by·diffoscope;·len:·38,·SHA:·de65ac4255f95eb26e1e1eb5b950262c928883cb541992eca2e1894e43ad4528·...·]-33">}</span><span·class="w">·······</span><span·class="p">|</span><span·class="w"> |
| 164 | ·······················</span><span·class="p"·data-group-id=" | 164 | ·······················</span><span·class="p"·data-group-id="4638392201-35">{</span><span·class="ss">audit_trail_log</span><span·class="p">,</span><span·class="w">··</span><span·class="nf">audit_trail_log</span><span·class="p"·data-group-id="4638392201-36">(</span><span·class="p"·data-group-id="4638392201-36">)</spa[·...·truncated·by·diffoscope;·len:·43,·SHA:·d76e00cbff115961aa33ee8d457b520e3a45c099d66f744b3660918d860a4783·...·]-35">}</span><span·class="w">··</span><span·class="p">|</span><span·class="w"> |
| 165 | ·······················</span><span·class="p"·data-group-id=" | 165 | ·······················</span><span·class="p"·data-group-id="4638392201-37">{</span><span·class="ss">error_report_mod</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">error_report_mod</span><span·class="p"·data-group-id="4638392201-38">(</span><span·class="p"·data-group-id="4638392201-38">)</sp[·...·truncated·by·diffoscope;·len:·44,·SHA:·c5ae37e6e2e175fe127380960095f2b44ff9dff459f9de79774b7b739a290760·...·]-37">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 166 | ·······················</span><span·class="p"·data-group-id="0831192463-39">{</span><span·class="ss">note_store</span><span·class="p">,</span><span·class="w">·······</span><span·class="nf">note_store</span><span·class="p"·data-group-id="0831192463-40">(</span><span·class="p"·data-group-id="0831192463-40">)</span><span·class="p"·data-group-id="0831192463-39">}</span><span·class="w">·······</span><span·class="p">|</span><span·class="w"> | ||
| 167 | ·······················</span><span·class="p"·data-group-id=" | 166 | ·······················</span><span·class="p"·data-group-id="4638392201-39">{</span><span·class="ss">note_store</span><span·class="p">,</span><span·class="w">·······</span><span·class="nf">note_store</span><span·class="p"·data-group-id="4638392201-40">(</span><span·class="p"·data-group-id="4638392201-40">)</span><sp[·...·truncated·by·diffoscope;·len:·71,·SHA:·7190dc73f60536d113af19af3a17f83fe61c4292bff63fce7776445ae6c90e42·...·]···</span><span·class="p">|</span><span·class="w"> |
| 167 | ·······················</span><span·class="p"·data-group-id="4638392201-41">{</span><span·class="ss">symbolic_store</span><span·class="p">,</span><span·class="w">···</span><span·class="nf">symbolic_store</span><span·class="p"·data-group-id="4638392201-42">(</span><span·class="p"·data-group-id="4638392201-42">)</span><span·class="p"·data-group-id="4638392201-41">}</span><span·class="w">···</span><span·class="p">|</span><span·class="w"> | ||
| 168 | ·······················</span><span·class="p"·data-group-id=" | 168 | ·······················</span><span·class="p"·data-group-id="4638392201-43">{</span><span·class="ss">target_cache</span><span·class="p">,</span><span·class="w">·····</span><span·class="nf">target_cache</span><span·class="p"·data-group-id="4638392201-44">(</span><span·class="p"·data-group-id="4638392201-44">)</span><[·...·truncated·by·diffoscope;·len:·40,·SHA:·f6e199e83682341e4919686f826e7762ff27f5a68c25f6a58d8e796a8613913a·...·]-43">}</span><span·class="w">·····</span><span·class="p">|</span><span·class="w"> |
| 169 | ·······················</span><span·class="p"·data-group-id="0831192463-45">{</span><span·class="ss">config</span><span·class="p">,</span><span·class="w">···········</span><span·class="nf">agent_config</span><span·class="p"·data-group-id="0831192463-46">(</span><span·class="p"·data-group-id="0831192463-46">)</span><span·class="p"·data-group-id="0831192463-45">}</span><span·class="w"> | ||
| 170 | ······ | 169 | ·······················</span><span·class="p"·data-group-id="4638392201-45">{</span><span·class="ss">config</span><span·class="p">,</span><span·class="w">···········</span><span·class="nf">agent_config</span><span·class="p"·data-group-id="4638392201-46">(</span>[·...·truncated·by·diffoscope;·len:·101,·SHA:·50e5b5ef29dd853cddca754105becfecd478e4fc67b7cafbc684daa4e72a8f52·...·]</span><span·class="w"> |
| 170 | ······</span><span·class="nf">manager_options</span><span·class="p"·data-group-id="4638392201-47">(</span><span·class="p"·data-group-id="4638392201-47">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4638392201-48">[</span><span·class="nf">manager_option</span><span·class="p"·data-group-id="4638392201-49">(</span><span·class="p"·data-group-id="4638392201-49">)</span><span·class="p"·data-group-id="4638392201-48">]</span><span·class="w"> | ||
| 171 | ······</span><span·class="nf">manager_option</span><span·class="p"·data-group-id=" | 171 | ······</span><span·class="nf">manager_option</span><span·class="p"·data-group-id="4638392201-50">(</span><span·class="p"·data-group-id="4638392201-50">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4638392201-51">{</span><span·class="ss">restart_type</span><span·class="p">,[·...·truncated·by·diffoscope;·len:·228,·SHA:·51f431efd7234fc4b6c96bce94549318dda5c98aa25d0ad0bb9b50c44307e1d9·...·]-51">}</span><span·class="w">····</span><span·class="p">|</span><span·class="w"> |
| 172 | ·························</span><span·class="p"·data-group-id=" | 172 | ·························</span><span·class="p"·data-group-id="4638392201-53">{</span><span·class="ss">net_if</span><span·class="p">,</span><span·class="w">···················</span><span·class="nf">manager_net_if</span><span·class="p"·data-group-id="4638392201-54">(</span><span·class="p"·data-group-id="4638392201-54"[·...·truncated·by·diffoscope;·len:·50,·SHA:·662ef462d1921da2c7b7679c24184b573900dc2e8f969b934d6f82d8ba0736f1·...·]-53">}</span><span·class="w">··</span><span·class="p">|</span><span·class="w"> |
| 173 | ·························</span><span·class="p"·data-group-id=" | 173 | ·························</span><span·class="p"·data-group-id="4638392201-55">{</span><span·class="ss">server</span><span·class="p">,</span><span·class="w">···················</span><span·class="nf">server</span><span·class="p"·data-group-id="4638392201-56">(</span><span·class="p"·data-group-id="4638392201-56">)</span[·...·truncated·by·diffoscope;·len:·42,·SHA:·bc3ec43bacadc37138452b90601fb4b06e8532b1d3b8e23af3956ed7afae0d85·...·]-55">}</span><span·class="w">··········</span><span·class="p">|</span><span·class="w"> |
| 174 | ·························</span><span·class="p"·data-group-id=" | 174 | ·························</span><span·class="p"·data-group-id="4638392201-57">{</span><span·class="ss">note_store</span><span·class="p">,</span><span·class="w">···············</span><span·class="nf">note_store</span><span·class="p"·data-group-id="4638392201-58">(</span><span·class="p"·data-group-id="4638392201-58">)</[·...·truncated·by·diffoscope;·len:·46,·SHA:·55788d1746c5ab7de230a109e00612e2ed9bedbb4f74ad54d468103e81b6607f·...·]-57">}</span><span·class="w">······</span><span·class="p">|</span><span·class="w"> |
| 175 | ·························</span><span·class="p"·data-group-id="0831192463-59">{</span><span·class="ss">config</span><span·class="p">,</span><span·class="w">···················</span><span·class="nf">manager_config</span><span·class="p"·data-group-id="0831192463-60">(</span><span·class="p"·data-group-id="0831192463-60">)</span><span·class="p"·data-group-id="0831192463-59">}</span><span·class="w">··</span><span·class="p">|</span><span·class="w"> | ||
| 176 | ·························</span><span·class="p"·data-group-id=" | 175 | ·························</span><span·class="p"·data-group-id="4638392201-59">{</span><span·class="ss">config</span><span·class="p">,</span><span·class="w">···················</span><span·class="nf">manager_config</span><span·class="p"·data-group-id="4638392201-60">(</span><span·class="p"·data-group-id="4638392201-60"[·...·truncated·by·diffoscope;·len:·79,·SHA:·f40a2c8c7f667d90a612c6434b6e445a6be0914840aca5df6ffc72fc5889f4db·...·]··</span><span·class="p">|</span><span·class="w"> |
| 176 | ·························</span><span·class="p"·data-group-id="4638392201-61">{</span><span·class="ss">inform_request_behaviour</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">manager_irb</span><span·class="p"·data-group-id="4638392201-62">(</span><span·class="p"·data-group-id="4638392201-62">)</span><span·class="p"·data-group-id="4638392201-61">}</span><span·class="w">·····</span><span·class="p">|</span><span·class="w"> | ||
| 177 | ·························</span><span·class="p"·data-group-id=" | 177 | ·························</span><span·class="p"·data-group-id="4638392201-63">{</span><span·class="ss">mibs</span><span·class="p">,</span><span·class="w">·····················</span><span·class="nf">manager_mibs</span><span·class="p"·data-group-id="4638392201-64">(</span><span·class="p"·data-group-id="4638392201-64">)[·...·truncated·by·diffoscope;·len:·48,·SHA:·8ad5996a93e1b5461ca578c0df837367a711fee0f76a9813e12d5c17c7f790a9·...·]-63">}</span><span·class="w">····</span><span·class="p">|</span><span·class="w"> |
| 178 | ·························</span><span·class="p"·data-group-id="0831192463-65">{</span><span·class="ss">priority</span><span·class="p">,</span><span·class="w">·················</span><span·class="nf">priority</span><span·class="p"·data-group-id="0831192463-66">(</span><span·class="p"·data-group-id="0831192463-66">)</span><span·class="p"·data-group-id="0831192463-65">}</span><span·class="w">········</span><span·class="p">|</span><span·class="w"> | ||
| 179 | ·························</span><span·class="p"·data-group-id="0831192463-67">{</span><span·class="ss">audit_trail_log</span><span·class="p">,</span><span·class="w">··········</span><span·class="nf">audit_trail_log</span><span·class="p"·data-group-id="0831192463-68">(</span><span·class="p"·data-group-id="0831192463-68">)</span><span·class="p"·data-group-id="0831192463-67">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> | ||
| 180 | ·························</span><span·class="p"·data-group-id=" | 178 | ·························</span><span·class="p"·data-group-id="4638392201-65">{</span><span·class="ss">priority</span><span·class="p">,</span><span·class="w">·················</span><span·class="nf">priority</span><span·class="p"·data-group-id="4638392201-66">(</span><span·class="p"·data-group-id="4638392201-66">)</sp[·...·truncated·by·diffoscope;·len:·47,·SHA:·cc0f539442a634635f7e66ad8d1625705270899c28a88671076caf6829d27521·...·]">}</span><span·class="w">········</span><span·class="p">|</span><span·class="w"> |
| 179 | ·························</span><span·class="p"·data-group-id="4638392201-67">{</span><span·class="ss">audit_trail_log</span><span·class="p">,</span><span·class="w">··········</span><span·class="nf">audit_trail_log</span><span·class="p"·data-group-id="4638392201-68">(</span><span·class="p"·data-group-id="4638392201-68">)</span><span·class="p"·data-group-id="4638392201-67">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> | ||
| 180 | ·························</span><span·class="p"·data-group-id="4638392201-69">{</span><span·class="ss">versions</span><span·class="p">,</span><span·class="w">·················</span><span·class="nf">versions</span><span·class="p"·data-group-id="4638392201-70">(</span><span·class="p"·data-group-id="4638392201-70">)</span><span·class="p"·data-group-id="4638392201-69">}</span><span·class="w">········</span><span·class="p">|</span><span·class="w"> | ||
| 181 | ·························</span><span·class="p"·data-group-id=" | 181 | ·························</span><span·class="p"·data-group-id="4638392201-71">{</span><span·class="ss">def_user_mod</span><span·class="p">,</span><span·class="w">·············</span><span·class="nf">def_user_module</span><span·class="p"·data-group-id="4638392201-72">(</span><span·class="p"·data-group-id="4638392201-72">)</span><span·class="w">··</span><span·class="p">|</span><span·class="w"> |
| 182 | ·························</span><span·class="p"·data-group-id=" | 182 | ·························</span><span·class="p"·data-group-id="4638392201-73">{</span><span·class="ss">def_user_data</span><span·class="p">,</span><span·class="w">············</span><span·class="nf">def_user_data</span><span·class="p"·data-group-id="4638392201-74">(</span><span·class="p"·data-group-id="4638392201-74">[·...·truncated·by·diffoscope;·len:·49,·SHA:·99f5293eb8a94d886579a4225421a09fd2be023bcd7ecaf4f611cc3fdec1e07d·...·]-73">}</span></code></pre><p><a·href=""·id="agent_opts_and_types"></a></p><p>Agent·specific·config·options·and·types:</p><ul><li><p><strong><code·class="inline"·id="agent_type">agent_type()·=·master·|·sub·<optional></code></strong>·-·If·<code·class="inline">master</code>, |
| 183 | one·master·agent·is·started.·Otherwise,·no·agents·are·started.</p><p>Default·is·<code·class="inline">master</code>.</p></li><li><p><strong><code·class="inline"·id="agent_disco">agent_discovery()·=·[agent_discovery_opt()]·<optional></code></strong>·- | 183 | one·master·agent·is·started.·Otherwise,·no·agents·are·started.</p><p>Default·is·<code·class="inline">master</code>.</p></li><li><p><strong><code·class="inline"·id="agent_disco">agent_discovery()·=·[agent_discovery_opt()]·<optional></code></strong>·- |
| 184 | <code·class="inline">agent_discovery_opt()·=·{terminating,·agent_terminating_discovery_opts()}·|·{originating,·agent_originating_discovery_opts()}</code></p><p>The·<code·class="inline">terminating</code>·options·effects·discovery·initiated·by·a·manager.</p><p>The·<code·class="inline">originating</code>·options·effects·discovery·initiated·by·this·agent.</p><p>For·defaults·see·the·options·in·<code·class="inline">agent_discovery_opt()</code>.</p></li><li><p><strong><code·class="inline"·id="agent_term_disco_opts">agent_terminating_discovery_opts()·=·[agent_terminating_discovery_opt()]·<optional></code></strong>·- | 184 | <code·class="inline">agent_discovery_opt()·=·{terminating,·agent_terminating_discovery_opts()}·|·{originating,·agent_originating_discovery_opts()}</code></p><p>The·<code·class="inline">terminating</code>·options·effects·discovery·initiated·by·a·manager.</p><p>The·<code·class="inline">originating</code>·options·effects·discovery·initiated·by·this·agent.</p><p>For·defaults·see·the·options·in·<code·class="inline">agent_discovery_opt()</code>.</p></li><li><p><strong><code·class="inline"·id="agent_term_disco_opts">agent_terminating_discovery_opts()·=·[agent_terminating_discovery_opt()]·<optional></code></strong>·- |
| 185 | <code·class="inline">agent_terminating_discovery_opt()·=·{enable,·boolean()}·|·{stage2,·discovery·|·plain}·|·{trigger_username,·string()}</code></p><p>These·are·options·effecting·discovery·<code·class="inline">terminating</code>·in·this·agent·(i.e. | 185 | <code·class="inline">agent_terminating_discovery_opt()·=·{enable,·boolean()}·|·{stage2,·discovery·|·plain}·|·{trigger_username,·string()}</code></p><p>These·are·options·effecting·discovery·<code·class="inline">terminating</code>·in·this·agent·(i.e. |
| 186 | initiated·by·a·manager).</p><p>The·default·values·for·the·<code·class="inline">terminating</code>·discovery·options·are:</p><ul><li>enable:·<code·class="inline">true</code></li><li>stage2:·<code·class="inline">discovery</code></li><li>trigger_username:·<code·class="inline">""</code></li></ul></li><li><p><strong><code·class="inline"·id="agent_orig_disco_opts">agent_originating_discovery_opts()·=·[agent_originating_discovery_opt()]·<optional></code></strong>·- | 186 | initiated·by·a·manager).</p><p>The·default·values·for·the·<code·class="inline">terminating</code>·discovery·options·are:</p><ul><li>enable:·<code·class="inline">true</code></li><li>stage2:·<code·class="inline">discovery</code></li><li>trigger_username:·<code·class="inline">""</code></li></ul></li><li><p><strong><code·class="inline"·id="agent_orig_disco_opts">agent_originating_discovery_opts()·=·[agent_originating_discovery_opt()]·<optional></code></strong>·- |
| 187 | <code·class="inline">agent_originating_discovery_opt()·=·{enable,·boolean()}</code></p><p>These·are·options·effecting·discovery·<code·class="inline">originating</code>·in·this·agent.</p><p>The·default·values·for·the·<code·class="inline">originating</code>·discovery·options·are:</p><ul><li>enable:·<code·class="inline">true</code></li></ul></li><li><p><strong><code·class="inline"·id="agent_mt">multi_threaded()·=·bool()·|·extended<optional></code></strong>·-·If·<code·class="inline">true</code> | 187 | <code·class="inline">agent_originating_discovery_opt()·=·{enable,·boolean()}</code></p><p>These·are·options·effecting·discovery·<code·class="inline">originating</code>·in·this·agent.</p><p>The·default·values·for·the·<code·class="inline">originating</code>·discovery·options·are:</p><ul><li>enable:·<code·class="inline">true</code></li></ul></li><li><p><strong><code·class="inline"·id="agent_mt">multi_threaded()·=·bool()·|·extended<optional></code></strong>·-·If·<code·class="inline">true</code> |
| 188 | (or·<code·class="inline">extended</code>),·the·agent·is·multi-threaded,·with·one·thread·for·each·get | 188 | (or·<code·class="inline">extended</code>),·the·agent·is·multi-threaded,·with·one·thread·for·each·get |
| 189 | request.</p><p>The·value·<code·class="inline">extended</code>·means·that·a·special·'process'·is·also·created·intended | 189 | request.</p><p>The·value·<code·class="inline">extended</code>·means·that·a·special·'process'·is·also·created·intended |
| Offset 158, 49 lines modified | Offset 158, 49 lines modified | ||
| 158 | Mnesia·table·<code·class="inline">snmp_variables</code>·which·must·be·a·table·with·two·attributes·(not·a | 158 | Mnesia·table·<code·class="inline">snmp_variables</code>·which·must·be·a·table·with·two·attributes·(not·a |
| 159 | Mnesia·SNMP·table).·The·SNMP·tables·are·stored·in·Mnesia·tables·with·the·same | 159 | Mnesia·SNMP·table).·The·SNMP·tables·are·stored·in·Mnesia·tables·with·the·same |
| 160 | names·as·the·SNMP·tables.·All·functions·assume·that·a·Mnesia·table·exists·with | 160 | names·as·the·SNMP·tables.·All·functions·assume·that·a·Mnesia·table·exists·with |
| 161 | the·correct·name·and·attributes.·It·is·the·programmer's·responsibility·to·ensure | 161 | the·correct·name·and·attributes.·It·is·the·programmer's·responsibility·to·ensure |
| 162 | this.·Specifically,·if·variables·are·stored·in·Mnesia,·the·table | 162 | this.·Specifically,·if·variables·are·stored·in·Mnesia,·the·table |
| 163 | <code·class="inline">snmp_variables</code>·must·be·created·by·the·programmer.·The·record·definition·for | 163 | <code·class="inline">snmp_variables</code>·must·be·created·by·the·programmer.·The·record·definition·for |
| 164 | this·table·is·defined·in·the·file·<code·class="inline">snmp/include/snmp_types.hrl</code>.</p><p>If·an·instrumentation·function·in·the·association·file·for·a·variable·<code·class="inline">myVar</code> | 164 | this·table·is·defined·in·the·file·<code·class="inline">snmp/include/snmp_types.hrl</code>.</p><p>If·an·instrumentation·function·in·the·association·file·for·a·variable·<code·class="inline">myVar</code> |
| 165 | does·not·have·a·name·when·compiling·an·MIB,·the·compiler·generates·an·entry.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 165 | does·not·have·a·name·when·compiling·an·MIB,·the·compiler·generates·an·entry.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="3800957806-1">{</span><span·class="ss">myVar</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3800957806-2">{</span><span·class="ss">snmp_generic</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">var[·...·truncated·by·diffoscope;·len:·1108,·SHA:·bd608285c384c132fe4281732cff1974b3ee4105065c3b43de0688934ebe814f·...·]-4">}</span><span·class="p">}</span><span·class="p">.</span></code></pre><h2·id="module-example"·class="section-heading"> |
| 166 | ··<a·href="#module-example"·class="hover-link"> | 166 | ··<a·href="#module-example"·class="hover-link"> |
| 167 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 167 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 168 | ··</a> | 168 | ··</a> |
| 169 | ··<span·class="text">Example</span> | 169 | ··<span·class="text">Example</span> |
| 170 | </h2> | 170 | </h2> |
| 171 | <p>The·following·example·shows·an·implementation·of·a·table·which·is·stored·in | 171 | <p>The·following·example·shows·an·implementation·of·a·table·which·is·stored·in |
| 172 | Mnesia,·but·with·some·checks·performed·at·set-request·operations.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">myTable_func</span><span·class="p"·data-group-id="5 | 172 | Mnesia,·but·with·some·checks·performed·at·set-request·operations.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">myTable_func</span><span·class="p"·data-group-id="5221299363-1">(</span><span·class="ss">new</span><span·class="p">,</span><span·class="w">·</span><span·class="n">NameDb</span><span·class="p"·data-group-id="5221299363-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">···</span><span·class="c1">%·pass·unchanged</span><span·class="w"> |
| 173 | ··</span><span·class="nc">snmp_generic</span><span·class="p">:</span><span·class="nf">table_func</span><span·class="p"·data-group-id="5 | 173 | ··</span><span·class="nc">snmp_generic</span><span·class="p">:</span><span·class="nf">table_func</span><span·class="p"·data-group-id="5221299363-2">(</span><span·class="ss">new</span><span·class="p">,</span><span·class="w">·</span><span·class="n">NameDb</span><span·class="p"·data-group-id="5221299363-2">)</span><span·class="p">.</span><span·class="w"> |
| 174 | </span><span·class="nf">myTable_func</span><span·class="p"·data-group-id="5 | 174 | </span><span·class="nf">myTable_func</span><span·class="p"·data-group-id="5221299363-3">(</span><span·class="ss">delete</span><span·class="p">,</span><span·class="w">·</span><span·class="n">NameDb</span><span·class="p"·data-group-id="5221299363-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">···</span><span·class="c1">%·pass·unchanged</span><span·class="w"> |
| 175 | ··</span><span·class="nc">snmp_generic</span><span·class="p">:</span><span·class="nf">table_func</span><span·class="p"·data-group-id="5 | 175 | ··</span><span·class="nc">snmp_generic</span><span·class="p">:</span><span·class="nf">table_func</span><span·class="p"·data-group-id="5221299363-4">(</span><span·class="ss">delete</span><span·class="p">,</span><span·class="w">·</span><span·class="n">NameDb</span><span·class="p"·data-group-id="5221299363-4">)</span><span·class="p">.</span><span·class="w"> |
| 176 | </span><span·class="c1">%%·change·row</span><span·class="w"> | 176 | </span><span·class="c1">%%·change·row</span><span·class="w"> |
| 177 | </span><span·class="nf">myTable_func</span><span·class="p"·data-group-id="5 | 177 | </span><span·class="nf">myTable_func</span><span·class="p"·data-group-id="5221299363-5">(</span><span·class="ss">is_set_ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">RowIndex</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cols</span><span·class="p">,</span><span·class="w">·</span>[·...·truncated·by·diffoscope;·len:·70,·SHA:·ae0cb4f18ab4725f0fdf506ba7a20f31f08d6040c2d6e69c2d7293716eedaf73·...·]-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 178 | ··</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">snmp_generic</span><span·class="p">:</span><span·class="nf">table_func</span><span·class="p"·data-group-id="5 | 178 | ··</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">snmp_generic</span><span·class="p">:</span><span·class="nf">table_func</span><span·class="p"·data-group-id="5221299363-6">(</span><span·class="ss">is_set_ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">RowIndex</span><span·class="p">,</span><span·class="w"> |
| 179 | ·······························</span><span·class="n">Cols</span><span·class="p">,</span><span·class="w">·</span><span·class="n">NameDb</span><span·class="p"·data-group-id="5 | 179 | ·······························</span><span·class="n">Cols</span><span·class="p">,</span><span·class="w">·</span><span·class="n">NameDb</span><span·class="p"·data-group-id="5221299363-6">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 180 | ····</span><span·class="p"·data-group-id="5 | 180 | ····</span><span·class="p"·data-group-id="5221299363-7">{</span><span·class="ss">noError</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">0</span><span·class="p"·data-group-id="5221299363-7">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 181 | ······</span><span·class="nc">myApplication</span><span·class="p">:</span><span·class="nf">is_set_ok</span><span·class="p"·data-group-id="5 | 181 | ······</span><span·class="nc">myApplication</span><span·class="p">:</span><span·class="nf">is_set_ok</span><span·class="p"·data-group-id="5221299363-8">(</span><span·class="n">RowIndex</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cols</span><span·class="p"·data-group-id="5221299363-8">)</span><span·class="p">;</span><span·class="w"> |
| 182 | ····</span><span·class="n">Err</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 182 | ····</span><span·class="n">Err</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 183 | ······</span><span·class="n">Err</span><span·class="w"> | 183 | ······</span><span·class="n">Err</span><span·class="w"> |
| 184 | ··</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> | 184 | ··</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> |
| 185 | </span><span·class="nf">myTable_func</span><span·class="p"·data-group-id="5 | 185 | </span><span·class="nf">myTable_func</span><span·class="p"·data-group-id="5221299363-9">(</span><span·class="ss">set</span><span·class="p">,</span><span·class="w">·</span><span·class="n">RowIndex</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cols</span><span·class="p">,</span><span·class="w">·</span><span·[·...·truncated·by·diffoscope;·len:·64,·SHA:·709c6f6d81f307ec49b8fb4c172209f3db7ba212a47799b35929a90e70959f26·...·]-9">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 186 | ··</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">snmp_generic</span><span·class="p">:</span><span·class="nf">table_func</span><span·class="p"·data-group-id="5 | 186 | ··</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">snmp_generic</span><span·class="p">:</span><span·class="nf">table_func</span><span·class="p"·data-group-id="5221299363-10">(</span><span·class="ss">set</span><span·class="p">,</span><span·class="w">·</span><span·class="n">RowIndex</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cols</span><span·class="p">,</span><span·class="w"> |
| 187 | ·······························</span><span·class="n">NameDb</span><span·class="p"·data-group-id="5 | 187 | ·······························</span><span·class="n">NameDb</span><span·class="p"·data-group-id="5221299363-10">)</span><span·class="p">,</span><span·class="w"> |
| 188 | ····</span><span·class="p"·data-group-id="5 | 188 | ····</span><span·class="p"·data-group-id="5221299363-11">{</span><span·class="ss">noError</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">0</span><span·class="p"·data-group-id="5221299363-11">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 189 | ······</span><span·class="c1">%·Now·the·row·is·updated,·tell·the·application</span><span·class="w"> | 189 | ······</span><span·class="c1">%·Now·the·row·is·updated,·tell·the·application</span><span·class="w"> |
| 190 | ······</span><span·class="nc">myApplication</span><span·class="p">:</span><span·class="nf">update</span><span·class="p"·data-group-id="5 | 190 | ······</span><span·class="nc">myApplication</span><span·class="p">:</span><span·class="nf">update</span><span·class="p"·data-group-id="5221299363-12">(</span><span·class="n">RowIndex</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cols</span><span·class="p"·data-group-id="5221299363-12">)</span><span·class="p">;</span><span·class="w"> |
| 191 | ····</span><span·class="n">Err</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 191 | ····</span><span·class="n">Err</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 192 | ······</span><span·class="n">Err</span><span·class="w"> | 192 | ······</span><span·class="n">Err</span><span·class="w"> |
| 193 | ··</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> | 193 | ··</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> |
| 194 | </span><span·class="nf">myTable_func</span><span·class="p"·data-group-id="5 | 194 | </span><span·class="nf">myTable_func</span><span·class="p"·data-group-id="5221299363-13">(</span><span·class="n">Op</span><span·class="p">,</span><span·class="w">·</span><span·class="n">RowIndex</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cols</span><span·class="p">,</span><span·class="w">·</span><span·c[·...·truncated·by·diffoscope;·len:·63,·SHA:·7a72570433c8986affefaf3d5b6b69c6595efcb5956e351a998605dd7fce50fc·...·]-13">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">···</span><span·class="c1">%·pass·unchanged</span><span·class="w"> |
| 195 | ··</span><span·class="nc">snmp_generic</span><span·class="p">:</span><span·class="nf">table_func</span><span·class="p"·data-group-id="5 | 195 | ··</span><span·class="nc">snmp_generic</span><span·class="p">:</span><span·class="nf">table_func</span><span·class="p"·data-group-id="5221299363-14">(</span><span·class="n">Op</span><span·class="p">,</span><span·class="w">·</span><span·class="n">RowIndex</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cols</span><span·class="p">,</span><span·class="w">·</span><span·c[·...·truncated·by·diffoscope;·len:·992,·SHA:·4ce3f4117dd4e5f18b16e49a4a1f5b9a16d273d2e7ae0515fc135f2b3918dbc8·...·]-1">}</span><span·class="p">.</span></code></pre> |
| 196 | ····</section> | 196 | ····</section> |
| 197 | </div> | 197 | </div> |
| 198 | ··<section·id="summary"·class="details-list"> | 198 | ··<section·id="summary"·class="details-list"> |
| 199 | ····<h1·class="section-heading"> | 199 | ····<h1·class="section-heading"> |
| 200 | ······<a·class="hover-link"·href="#summary"> | 200 | ······<a·class="hover-link"·href="#summary"> |
| Offset 226, 62 lines modified | Offset 226, 62 lines modified | ||
| 226 | ··</a> | 226 | ··</a> |
| 227 | ··<span·class="text">Default·Implementation</span> | 227 | ··<span·class="text">Default·Implementation</span> |
| 228 | </h2> | 228 | </h2> |
| 229 | <p>Without·writing·any·instrumentation·functions,·we·can·compile·the·MIB·and·use | 229 | <p>Without·writing·any·instrumentation·functions,·we·can·compile·the·MIB·and·use |
| 230 | the·default·implementation·of·it.·Recall·that·MIBs·imported·by·"EX1-MIB.mib" | 230 | the·default·implementation·of·it.·Recall·that·MIBs·imported·by·"EX1-MIB.mib" |
| 231 | must·be·present·and·compiled·in·the·current·directory | 231 | must·be·present·and·compiled·in·the·current·directory |
| 232 | ("./STANDARD-MIB.bin","./RFC1213-MIB.bin")·when·compiling.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">unix</span><span·class="o">></span><span·class="w">·</span><span·class="ss">erl</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">config</span><span·class="w">·</span><span·class="p">.</span><span·class="o">/</span><span·class="ss">sys</span><span·class="gp·unselectable"> | 232 | ("./STANDARD-MIB.bin","./RFC1213-MIB.bin")·when·compiling.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">unix</span><span·class="o">></span><span·class="w">·</span><span·class="ss">erl</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">config</span><span·class="w">·</span><span·class="p">.</span><span·class="o">/</span><span·class="ss">sys</span><span·class="gp·unselectable"> |
| 233 | 1>·</span><span·class="nc">application</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 233 | 1>·</span><span·class="nc">application</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="2496987617-1">(</span><span·class="ss">snmp</span><span·class="p"·data-group-id="2496987617-1">)</span><span·class="p">.</span><span·class="w"> |
| 234 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 234 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 235 | 2>·</span><span·class="nc">snmpc</span><span·class="p">:</span><span·class="nf">compile</span><span·class="p"·data-group-id=" | 235 | 2>·</span><span·class="nc">snmpc</span><span·class="p">:</span><span·class="nf">compile</span><span·class="p"·data-group-id="2496987617-2">(</span><span·class="s">"EX1-MIB"</span><span·class="p"·data-group-id="2496987617-2">)</span><span·class="p">.</span><span·class="w"> |
| 236 | </span><span·class="n">No</span><span·class="w">·</span><span·class="ss">accessfunction</span><span·class="w">·</span><span·class="ss">for</span><span·class="w">·</span><span·class="ss">'friendsTable'</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">using</span><span·class="w">·</span><span·class="ss">default</span><span·class="p">.</span><span·class="w"> | 236 | </span><span·class="n">No</span><span·class="w">·</span><span·class="ss">accessfunction</span><span·class="w">·</span><span·class="ss">for</span><span·class="w">·</span><span·class="ss">'friendsTable'</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">using</span><span·class="w">·</span><span·class="ss">default</span><span·class="p">.</span><span·class="w"> |
| 237 | </span><span·class="n">No</span><span·class="w">·</span><span·class="ss">accessfunction</span><span·class="w">·</span><span·class="ss">for</span><span·class="w">·</span><span·class="ss">'myName'</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">using</span><span·class="w">·</span><span·class="ss">default</span><span·class="p">.</span><span·class="w"> | 237 | </span><span·class="n">No</span><span·class="w">·</span><span·class="ss">accessfunction</span><span·class="w">·</span><span·class="ss">for</span><span·class="w">·</span><span·class="ss">'myName'</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">using</span><span·class="w">·</span><span·class="ss">default</span><span·class="p">.</span><span·class="w"> |
| 238 | </span><span·class="p"·data-group-id=" | 238 | </span><span·class="p"·data-group-id="2496987617-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"EX1-MIB.bin"</span><span·class="p"·data-group-id="2496987617-3">}</span><span·class="gp·unselectable"> |
| 239 | 3>·</span><span·class="nc">snmpa</span><span·class="p">:</span><span·class="nf">load_mibs</span><span·class="p"·data-group-id=" | 239 | 3>·</span><span·class="nc">snmpa</span><span·class="p">:</span><span·class="nf">load_mibs</span><span·class="p"·data-group-id="2496987617-4">(</span><span·class="ss">snmp_master_agent</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2496987617-5">[</span><span·class="s">"EX1-MIB"</span><span·class="p"·data-group-id="2496987617-5">]</sp[·...·truncated·by·diffoscope;·len:·44,·SHA:·fe62960b7532217d7f51c7722815a33c187e5963f5bf7ddae04574c1b9d4597d·...·]-4">)</span><span·class="p">.</span><span·class="w"> |
| 240 | </span><span·class="ss">ok</span></code></pre><p>This·MIB·is·now·loaded·into·the·agent,·and·a·manager·can·ask·questions.·As·an | 240 | </span><span·class="ss">ok</span></code></pre><p>This·MIB·is·now·loaded·into·the·agent,·and·a·manager·can·ask·questions.·As·an |
| 241 | example·of·this,·we·start·another·Erlang·system·and·the·simple·Erlang·manager·in | 241 | example·of·this,·we·start·another·Erlang·system·and·the·simple·Erlang·manager·in |
| 242 | the·toolkit:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">snmp_test_mgr</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 242 | the·toolkit:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">snmp_test_mgr</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id="7557716443-1">(</span><span·class="p"·data-group-id="7557716443-2">[</span><span·class="p"·data-group-id="7557716443-3">{</span><span·class="ss">agent</span><span·class="p">,</span><span·class="s">"dront.ericsson.se"</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·250,·SHA:·d983a3bd345a1e61290e7903db873d0a6199dc32ed28ead1b294bded2bde6a71·...·]-4">}</span><span·class="p">,</span><span·class="w"> |
| 243 | ·</span><span·class="c1">%%·making·it·understand·symbolic·names:·{mibs,["EX1-MIB","STANDARD-MIB"]}]).</span><span·class="w"> | 243 | ·</span><span·class="c1">%%·making·it·understand·symbolic·names:·{mibs,["EX1-MIB","STANDARD-MIB"]}]).</span><span·class="w"> |
| 244 | </span><span·class="p"·data-group-id=" | 244 | </span><span·class="p"·data-group-id="7557716443-5">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="o"><</span><span·class="mf">0.89</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·12,·SHA:·032467733cdc2f65f8fb7a22a338bea1ebe7b7abe6e2f82c9fa425ed7c137edb·...·]-5">}</span><span·class="w"> |
| 245 | </span><span·class="c1">%%·a·get-next·request·with·one·OID.</span><span·class="gp·unselectable"> | 245 | </span><span·class="c1">%%·a·get-next·request·with·one·OID.</span><span·class="gp·unselectable"> |
| 246 | 2>·</span><span·class="nc">snmp_test_mgr</span><span·class="p">:</span><span·class="nf">gn</span><span·class="p"·data-group-id=" | 246 | 2>·</span><span·class="nc">snmp_test_mgr</span><span·class="p">:</span><span·class="nf">gn</span><span·class="p"·data-group-id="7557716443-6">(</span><span·class="p"·data-group-id="7557716443-7">[</span><span·class="p"·data-group-id="7557716443-8">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">6</span><span[·...·truncated·by·diffoscope;·len:·289,·SHA:·420ceee9bcabd7688babc226d3c668d9fe77ca96c1f7e826603844a762872ce2·...·]-6">)</span><span·class="p">.</span><span·class="w"> |
| 247 | </span><span·class="ss">ok</span><span·class="w"> | 247 | </span><span·class="ss">ok</span><span·class="w"> |
| 248 | </span><span·class="gt">*·Got·PDU:</span><span·class="w"> | 248 | </span><span·class="gt">*·Got·PDU:</span><span·class="w"> |
| 249 | </span><span·class="p"·data-group-id=" | 249 | </span><span·class="p"·data-group-id="7557716443-9">[</span><span·class="ss">myName</span><span·class="p">,</span><span·class="mi">0</span><span·class="p"·data-group-id="7557716443-9">]</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·65,·SHA:·6f886ef0407ff962c4f892271f14b04ac457896a5025978708ceb5337c9f6ebc·...·]-10">]</span><span·class="w"> |
| 250 | </span><span·class="c1">%%·A·set-request·(now·using·symbolic·names·for·convenience)</span><span·class="gp·unselectable"> | 250 | </span><span·class="c1">%%·A·set-request·(now·using·symbolic·names·for·convenience)</span><span·class="gp·unselectable"> |
| 251 | 3>·</span><span·class="nc">snmp_test_mgr</span><span·class="p">:</span><span·class="nf">s</span><span·class="p"·data-group-id=" | 251 | 3>·</span><span·class="nc">snmp_test_mgr</span><span·class="p">:</span><span·class="nf">s</span><span·class="p"·data-group-id="7557716443-11">(</span><span·class="p"·data-group-id="7557716443-12">[</span><span·class="p"·data-group-id="7557716443-13">{</span><span·class="p"·data-group-id="7557716443-14">[</span><span·class="ss">myName</span><span·class="p">,</span><span·class="mi">[·...·truncated·by·diffoscope;·len:·300,·SHA:·44a5fd5e4e60617cc549e5c41f63bd27f48d63e3686ea263c557a1e13311197b·...·]-11">)</span><span·class="p">.</span><span·class="w"> |
| 252 | </span><span·class="ss">ok</span><span·class="w"> | 252 | </span><span·class="ss">ok</span><span·class="w"> |
| 253 | </span><span·class="gt">*·Got·PDU:</span><span·class="w"> | 253 | </span><span·class="gt">*·Got·PDU:</span><span·class="w"> |
| 254 | </span><span·class="p"·data-group-id=" | 254 | </span><span·class="p"·data-group-id="7557716443-15">[</span><span·class="ss">myName</span><span·class="p">,</span><span·class="mi">0</span><span·class="p"·data-group-id="7557716443-15">]</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"Martin"</span><span·class="w"> |
| 255 | </span><span·class="c1">%%·Try·the·same·get-next·request·again</span><span·class="gp·unselectable"> | 255 | </span><span·class="c1">%%·Try·the·same·get-next·request·again</span><span·class="gp·unselectable"> |
| 256 | 4>·</span><span·class="nc">snmp_test_mgr</span><span·class="p">:</span><span·class="nf">gn</span><span·class="p"·data-group-id=" | 256 | 4>·</span><span·class="nc">snmp_test_mgr</span><span·class="p">:</span><span·class="nf">gn</span><span·class="p"·data-group-id="7557716443-16">(</span><span·class="p"·data-group-id="7557716443-17">[</span><span·class="p"·data-group-id="7557716443-18">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">6</span><s[·...·truncated·by·diffoscope;·len:·294,·SHA:·c41f6d484d067e1fc4990dcf33737e4f57d41b0ad6bd359b9b31047ec00fe6bf·...·]-16">)</span><span·class="p">.</span><span·class="w"> |
| 257 | </span><span·class="ss">ok</span><span·class="w"> | 257 | </span><span·class="ss">ok</span><span·class="w"> |
| 258 | </span><span·class="gt">*·Got·PDU:</span><span·class="w"> | 258 | </span><span·class="gt">*·Got·PDU:</span><span·class="w"> |
| 259 | </span><span·class="p"·data-group-id=" | 259 | </span><span·class="p"·data-group-id="7557716443-19">[</span><span·class="ss">myName</span><span·class="p">,</span><span·class="mi">0</span><span·class="p"·data-group-id="7557716443-19">]</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"Martin"</span><span·class="w"> |
| 260 | </span><span·class="c1">%%·...·and·we·got·the·new·value.</span><span·class="w"> | 260 | </span><span·class="c1">%%·...·and·we·got·the·new·value.</span><span·class="w"> |
| 261 | </span><span·class="c1">%%·you·can·event·do·row·operations.·How·to·add·a·row:</span><span·class="gp·unselectable"> | 261 | </span><span·class="c1">%%·you·can·event·do·row·operations.·How·to·add·a·row:</span><span·class="gp·unselectable"> |
| 262 | 5>·</span><span·class="nc">snmp_test_mgr</span><span·class="p">:</span><span·class="nf">s</span><span·class="p"·data-group-id=" | 262 | 5>·</span><span·class="nc">snmp_test_mgr</span><span·class="p">:</span><span·class="nf">s</span><span·class="p"·data-group-id="7557716443-20">(</span><span·class="p"·data-group-id="7557716443-21">[</span><span·class="p"·data-group-id="7557716443-22">{</span><span·class="p"·data-group-id="7557716443-23">[</span><span·class="ss">fName</span><span·class="p">,</span><span·class="mi">0[·...·truncated·by·diffoscope;·len:·1100,·SHA:·9c7a42ea0be77e8f1bdaa99de2b3f4e7f763801969db4c24d7676fa5b07401d5·...·]-20">)</span><span·class="p">.</span><span·class="w"> |
| 263 | ·</span><span·class="c1">%%·createAndGo</span><span·class="w"> | 263 | ·</span><span·class="c1">%%·createAndGo</span><span·class="w"> |
| 264 | </span><span·class="ss">ok</span><span·class="w"> | 264 | </span><span·class="ss">ok</span><span·class="w"> |
| 265 | </span><span·class="gt">*·Got·PDU:</span><span·class="w"> | 265 | </span><span·class="gt">*·Got·PDU:</span><span·class="w"> |
| 266 | </span><span·class="p"·data-group-id=" | 266 | </span><span·class="p"·data-group-id="7557716443-28">[</span><span·class="ss">fName</span><span·class="p">,</span><span·class="mi">0</span><span·class="p"·data-group-id="7557716443-28">]</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"Martin"</span><span·class="w"> |
| 267 | </span><span·class="p"·data-group-id=" | 267 | </span><span·class="p"·data-group-id="7557716443-29">[</span><span·class="ss">fAddress</span><span·class="p">,</span><span·class="mi">0</span><span·class="p"·data-group-id="7557716443-29">]</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"home"</span><span·class="w"> |
| 268 | </span><span·class="p"·data-group-id=" | 268 | </span><span·class="p"·data-group-id="7557716443-30">[</span><span·class="ss">fStatus</span><span·class="p">,</span><span·class="mi">0</span><span·class="p"·data-group-id="7557716443-30">]</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">4</span><span·class="gp·unselectable"> |
| 269 | 6>·</span><span·class="nc">snmp_test_mgr</span><span·class="p">:</span><span·class="nf">gn</span><span·class="p"·data-group-id=" | 269 | 6>·</span><span·class="nc">snmp_test_mgr</span><span·class="p">:</span><span·class="nf">gn</span><span·class="p"·data-group-id="7557716443-31">(</span><span·class="p"·data-group-id="7557716443-32">[</span><span·class="p"·data-group-id="7557716443-33">[</span><span·class="ss">myName</span><span·class="p">,</span><span·class="mi">0</span><span·class="p"·data-group-id="7557716443-33">[·...·truncated·by·diffoscope;·len:·103,·SHA:·a43d21da2d1c309b4168b8b890722a65d7a21f4d43e3fa256ee087ad6c82fbae·...·]-31">)</span><span·class="p">.</span><span·class="w"> |
| 270 | </span><span·class="ss">ok</span><span·class="w"> | 270 | </span><span·class="ss">ok</span><span·class="w"> |
| 271 | </span><span·class="gt">*·Got·PDU:</span><span·class="w"> | 271 | </span><span·class="gt">*·Got·PDU:</span><span·class="w"> |
| 272 | </span><span·class="p"·data-group-id=" | 272 | </span><span·class="p"·data-group-id="7557716443-34">[</span><span·class="ss">fName</span><span·class="p">,</span><span·class="mi">0</span><span·class="p"·data-group-id="7557716443-34">]</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"Martin"</span><span·class="gp·unselectable"> |
| 273 | 7>·</span><span·class="nc">snmp_test_mgr</span><span·class="p">:</span><span·class="nf">gn</span><span·class="p"·data-group-id=" | 273 | 7>·</span><span·class="nc">snmp_test_mgr</span><span·class="p">:</span><span·class="nf">gn</span><span·class="p"·data-group-id="7557716443-35">(</span><span·class="p"·data-group-id="7557716443-35">)</span><span·class="p">.</span><span·class="w"> |
| 274 | </span><span·class="ss">ok</span><span·class="w"> | 274 | </span><span·class="ss">ok</span><span·class="w"> |
| 275 | </span><span·class="gt">*·Got·PDU:</span><span·class="w"> | 275 | </span><span·class="gt">*·Got·PDU:</span><span·class="w"> |
| 276 | </span><span·class="p"·data-group-id=" | 276 | </span><span·class="p"·data-group-id="7557716443-36">[</span><span·class="ss">fAddress</span><span·class="p">,</span><span·class="mi">0</span><span·class="p"·data-group-id="7557716443-36">]</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"home"</span><span·class="gp·unselectable"> |
| 277 | 8>·</span><span·class="nc">snmp_test_mgr</span><span·class="p">:</span><span·class="nf">gn</span><span·class="p"·data-group-id=" | 277 | 8>·</span><span·class="nc">snmp_test_mgr</span><span·class="p">:</span><span·class="nf">gn</span><span·class="p"·data-group-id="7557716443-37">(</span><span·class="p"·data-group-id="7557716443-37">)</span><span·class="p">.</span><span·class="w"> |
| 278 | </span><span·class="ss">ok</span><span·class="w"> | 278 | </span><span·class="ss">ok</span><span·class="w"> |
| 279 | </span><span·class="gt">*·Got·PDU:</span><span·class="w"> | 279 | </span><span·class="gt">*·Got·PDU:</span><span·class="w"> |
| 280 | </span><span·class="p"·data-group-id=" | 280 | </span><span·class="p"·data-group-id="7557716443-38">[</span><span·class="ss">fStatus</span><span·class="p">,</span><span·class="mi">0</span><span·class="p"·data-group-id="7557716443-38">]</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">1</span><span·class="w"> |
| 281 | </span><span·class="mi">9</span><span·class="o">></span></code></pre><h2·id="manual-implementation"·class="section-heading"> | 281 | </span><span·class="mi">9</span><span·class="o">></span></code></pre><h2·id="manual-implementation"·class="section-heading"> |
| 282 | ··<a·href="#manual-implementation"·class="hover-link"> | 282 | ··<a·href="#manual-implementation"·class="hover-link"> |
| 283 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 283 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 284 | ··</a> | 284 | ··</a> |
| 285 | ··<span·class="text">Manual·Implementation</span> | 285 | ··<span·class="text">Manual·Implementation</span> |
| 286 | </h2> | 286 | </h2> |
| 287 | <p>The·following·example·shows·a·"manual"·implementation·of·the·EX1-MIB·in·Erlang. | 287 | <p>The·following·example·shows·a·"manual"·implementation·of·the·EX1-MIB·in·Erlang. |
| Offset 291, 247 lines modified | Offset 291, 247 lines modified | ||
| 291 | <code·class="inline">friendsTable</code>.·Each·row·is·a·4-tuple.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>There·are·more·efficient·ways·to·create·tables·manually,·i.e.·to·use·the | 291 | <code·class="inline">friendsTable</code>.·Each·row·is·a·4-tuple.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>There·are·more·efficient·ways·to·create·tables·manually,·i.e.·to·use·the |
| 292 | module·<code·class="inline">snmp_index</code>.</p></section><h3·id="code"·class="section-heading"> | 292 | module·<code·class="inline">snmp_index</code>.</p></section><h3·id="code"·class="section-heading"> |
| 293 | ··<a·href="#code"·class="hover-link"> | 293 | ··<a·href="#code"·class="hover-link"> |
| 294 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 294 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 295 | ··</a> | 295 | ··</a> |
| 296 | ··<span·class="text">Code</span> | 296 | ··<span·class="text">Code</span> |
| 297 | </h3> | 297 | </h3> |
| 298 | <pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="182 | 298 | <pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="1738269545-1">(</span><span·class="ss">ex1</span><span·class="p"·data-group-id="1738269545-1">)</span><span·class="p">.</span><span·class="w"> |
| 299 | </span><span·class="p">-</span><span·class="na">author</span><span·class="p"·data-group-id="182 | 299 | </span><span·class="p">-</span><span·class="na">author</span><span·class="p"·data-group-id="1738269545-2">(</span><span·class="ss">'dummy@flop.org'</span><span·class="p"·data-group-id="1738269545-2">)</span><span·class="p">.</span><span·class="w"> |
| 300 | </span><span·class="c1">%%·External·exports</span><span·class="w"> | 300 | </span><span·class="c1">%%·External·exports</span><span·class="w"> |
| 301 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="182 | 301 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="1738269545-3">(</span><span·class="p"·data-group-id="1738269545-4">[</span><span·class="ss">start</span><span·class="p">/</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">my_name</span><span·class="p">/</span><[·...·truncated·by·diffoscope;·len:·380,·SHA:·0ff9d2e89d63672e7a58b90e826c13c64e7cec67ea69ed752706f63875b9d0f4·...·]-3">)</span><span·class="p">.</span><span·class="w"> |
| 302 | </span><span·class="c1">%%·Internal·exports</span><span·class="w"> | 302 | </span><span·class="c1">%%·Internal·exports</span><span·class="w"> |
| 303 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="182 | 303 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="1738269545-5">(</span><span·class="p"·data-group-id="1738269545-6">[</span><span·class="ss">init</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data-group-id="1738269545-6">]</span><span·class="p"·data-group-id="1738269545-5">)</span><span·class="p">.</span><span·class="w"> |
| 304 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="182 | 304 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="1738269545-7">(</span><span·class="ss">status_col</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">4</span><span·class="p"·data-group-id="1738269545-7">)</span><span·class="p">.</span><span·class="w"> |
| 305 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="182 | 305 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="1738269545-8">(</span><span·class="ss">active</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="1738269545-8">)</span><span·class="p">.</span><span·class="w"> |
| 306 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="182 | 306 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="1738269545-9">(</span><span·class="ss">notInService</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">2</span><span·class="p"·data-group-id="1738269545-9">)</span><span·class="p">.</span><span·class="w"> |
| 307 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="182 | 307 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="1738269545-10">(</span><span·class="ss">notReady</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">3</span><span·class="p"·data-group-id="1738269545-10">)</span><span·class="p">.</span><span·class="w"> |
| 308 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="1825973639-11">(</span><span·class="ss">createAndGo</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">4</span><span·class="p"·data-group-id="1825973639-11">)</span><span·class="p">.</span><span·class="w">···</span><span·class="c1">%·Action;·written,·not·read</span><span·class="w"> | ||
| 309 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="1825973639-12">(</span><span·class="ss">createAndWait</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">5</span><span·class="p"·data-group-id="1825973639-12">)</span><span·class="p">.</span><span·class="w">·</span><span·class="c1">%·Action;·written,·not·read</span><span·class="w"> | ||
| 310 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="182 | 308 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="1738269545-11">(</span><span·class="ss">createAndGo</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">4</span><span·class="p"·data-group-id="1738269545-11">)</span><span·class="p">.</span><span·class="w">···</span><span·class="c1">%·Action;·written,·not·read</span><span·class="w"> |
| 309 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="1738269545-12">(</span><span·class="ss">createAndWait</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">5</span><span·class="p"·data-group-id="1738269545-12">)</span><span·class="p">.</span><span·class="w">·</span><span·class="c1">%·Action;·written,·not·read</span><span·class="w"> | ||
| 310 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="1738269545-13">(</span><span·class="ss">destroy</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">6</span><span·class="p"·data-group-id="1738269545-13">)</span><span·class="p">.</span><span·class="w">·······</span><span·class="c1">%·Action;·written,·not·read</span><span·class="w"> | ||
| 311 | </span><span·class="nf">start</span><span·class="p"·data-group-id="182 | 311 | </span><span·class="nf">start</span><span·class="p"·data-group-id="1738269545-14">(</span><span·class="p"·data-group-id="1738269545-14">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 312 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id="182 | 312 | ····</span><span·class="nf">spawn</span><span·class="p"·data-group-id="1738269545-15">(</span><span·class="ss">ex1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">init</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1738269545-16">[</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·66,·SHA:·83863497c9b573bcc4c6df7f527b99c32d9b20b52c23c607ce6d907e9ef73707·...·]-15">)</span><span·class="p">.</span><span·class="w"> |
| 313 | </span><span·class="c1">%%----------------------------------------------------------------</span><span·class="w"> | 313 | </span><span·class="c1">%%----------------------------------------------------------------</span><span·class="w"> |
| 314 | </span><span·class="c1">%%·Instrumentation·function·for·variable·myName.</span><span·class="w"> | 314 | </span><span·class="c1">%%·Instrumentation·function·for·variable·myName.</span><span·class="w"> |
| 315 | </span><span·class="c1">%%·Returns:·(get)·{value,·Name}</span><span·class="w"> | 315 | </span><span·class="c1">%%·Returns:·(get)·{value,·Name}</span><span·class="w"> |
| 316 | </span><span·class="c1">%%··········(set)·noError</span><span·class="w"> | 316 | </span><span·class="c1">%%··········(set)·noError</span><span·class="w"> |
| 317 | </span><span·class="c1">%%----------------------------------------------------------------</span><span·class="w"> | 317 | </span><span·class="c1">%%----------------------------------------------------------------</span><span·class="w"> |
| 318 | </span><span·class="nf">my_name</span><span·class="p"·data-group-id="182 | 318 | </span><span·class="nf">my_name</span><span·class="p"·data-group-id="1738269545-17">(</span><span·class="nb">get</span><span·class="p"·data-group-id="1738269545-17">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 319 | ····</span><span·class="ss">ex1_server</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="182 | 319 | ····</span><span·class="ss">ex1_server</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="1738269545-18">{</span><span·class="nf">self</span><span·class="p"·data-group-id="1738269545-19">(</span><span·class="p"·data-group-id="1738269545-19">)</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">get_my_name</span><span·class="p"[·...·truncated·by·diffoscope;·len:·26,·SHA:·5988b57fb30ef091492ec302da7ab7707ff4fd670b6f23503494e274a535c480·...·]-18">}</span><span·class="p">,</span><span·class="w"> |
| 320 | ····</span><span·class="n">Name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">wait_answer</span><span·class="p"·data-group-id="182 | 320 | ····</span><span·class="n">Name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">wait_answer</span><span·class="p"·data-group-id="1738269545-20">(</span><span·class="p"·data-group-id="1738269545-20">)</span><span·class="p">,</span><span·class="w"> |
| 321 | ····</span><span·class="p"·data-group-id="182 | 321 | ····</span><span·class="p"·data-group-id="1738269545-21">{</span><span·class="ss">value</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Name</span><span·class="p"·data-group-id="1738269545-21">}</span><span·class="p">.</span><span·class="w"> |
| 322 | </span><span·class="nf">my_name</span><span·class="p"·data-group-id="182 | 322 | </span><span·class="nf">my_name</span><span·class="p"·data-group-id="1738269545-22">(</span><span·class="ss">set</span><span·class="p">,</span><span·class="w">·</span><span·class="n">NewName</span><span·class="p"·data-group-id="1738269545-22">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 323 | ····</span><span·class="ss">ex1_server</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="182 | 323 | ····</span><span·class="ss">ex1_server</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="1738269545-23">{</span><span·class="nf">self</span><span·class="p"·data-group-id="1738269545-24">(</span><span·class="p"·data-group-id="1738269545-24">)</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1738269545-25">{</s[·...·truncated·by·diffoscope;·len:·212,·SHA:·d6c6e89db0d79fdec3acbe7bd29f96caca82c59cf3a1b92f6d6bc2c9d10bb5d2·...·]-23">}</span><span·class="p">,</span><span·class="w"> |
| 324 | ····</span><span·class="ss">noError</span><span·class="p">.</span><span·class="w"> | 324 | ····</span><span·class="ss">noError</span><span·class="p">.</span><span·class="w"> |
| 325 | </span><span·class="c1">%%----------------------------------------------------------------</span><span·class="w"> | 325 | </span><span·class="c1">%%----------------------------------------------------------------</span><span·class="w"> |
| 326 | </span><span·class="c1">%%·Instrumentation·function·for·table·friendsTable.</span><span·class="w"> | 326 | </span><span·class="c1">%%·Instrumentation·function·for·table·friendsTable.</span><span·class="w"> |
| 327 | </span><span·class="c1">%%----------------------------------------------------------------</span><span·class="w"> | 327 | </span><span·class="c1">%%----------------------------------------------------------------</span><span·class="w"> |
| 328 | </span><span·class="nf">friends_table</span><span·class="p"·data-group-id="182 | 328 | </span><span·class="nf">friends_table</span><span·class="p"·data-group-id="1738269545-26">(</span><span·class="nb">get</span><span·class="p">,</span><span·class="w">·</span><span·class="n">RowIndex</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cols</span><span·class="p"·data-group-id="1738269545-26">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 329 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">get_row</span><span·class="p"·data-group-id="182 | 329 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">get_row</span><span·class="p"·data-group-id="1738269545-27">(</span><span·class="n">RowIndex</span><span·class="p"·data-group-id="1738269545-27">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 330 | ···</span><span·class="p"·data-group-id="182 | 330 | ···</span><span·class="p"·data-group-id="1738269545-28">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Row</span><span·class="p"·data-group-id="1738269545-28">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 331 | ········</span><span·class="nf">get_cols</span><span·class="p"·data-group-id="182 | 331 | ········</span><span·class="nf">get_cols</span><span·class="p"·data-group-id="1738269545-29">(</span><span·class="n">Cols</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Row</span><span·class="p"·data-group-id="1738269545-29">)</span><span·class="p">;</span><span·class="w"> |
| 332 | ···</span><span·class="p">_</span><span·class="w">··</span><span·class="p">-></span><span·class="w"> | 332 | ···</span><span·class="p">_</span><span·class="w">··</span><span·class="p">-></span><span·class="w"> |
| 333 | ········</span><span·class="p"·data-group-id="182 | 333 | ········</span><span·class="p"·data-group-id="1738269545-30">{</span><span·class="ss">noValue</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">noSuchInstance</span><span·class="p"·data-group-id="1738269545-30">}</span><span·class="w"> |
| 334 | ····</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> | 334 | ····</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> |
| 335 | </span><span·class="nf">friends_table</span><span·class="p"·data-group-id="182 | 335 | </span><span·class="nf">friends_table</span><span·class="p"·data-group-id="1738269545-31">(</span><span·class="ss">get_next</span><span·class="p">,</span><span·class="w">·</span><span·class="n">RowIndex</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cols</span><span·class="p"·data-group-id="1738269545-31">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 336 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">get_next_row</span><span·class="p"·data-group-id="182 | 336 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">get_next_row</span><span·class="p"·data-group-id="1738269545-32">(</span><span·class="n">RowIndex</span><span·class="p"·data-group-id="1738269545-32">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 337 | ···</span><span·class="p"·data-group-id="182 | 337 | ···</span><span·class="p"·data-group-id="1738269545-33">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Row</span><span·class="p"·data-group-id="1738269545-33">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 338 | ········</span><span·class="nf">get_next_cols</span><span·class="p"·data-group-id="182 | 338 | ········</span><span·class="nf">get_next_cols</span><span·class="p"·data-group-id="1738269545-34">(</span><span·class="n">Cols</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Row</span><span·class="p"·data-group-id="1738269545-34">)</span><span·class="p">;</span><span·class="w"> |
| 339 | ···</span><span·class="p">_</span><span·class="w">··</span><span·class="p">-></span><span·class="w"> | 339 | ···</span><span·class="p">_</span><span·class="w">··</span><span·class="p">-></span><span·class="w"> |
| 340 | ·······</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">get_next_row</span><span·class="p"·data-group-id="182 | 340 | ·······</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">get_next_row</span><span·class="p"·data-group-id="1738269545-35">(</span><span·class="p"·data-group-id="1738269545-36">[</span><span·class="p"·data-group-id="1738269545-36">]</span><span·class="p"·data-group-id="1738269545-35">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 341 | ·····</span><span·class="p"·data-group-id="182 | 341 | ·····</span><span·class="p"·data-group-id="1738269545-37">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Row</span><span·class="p"·data-group-id="1738269545-37">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 342 | ·········</span><span·class="c1">%·Get·next·cols·from·first·row.</span><span·class="w"> | 342 | ·········</span><span·class="c1">%·Get·next·cols·from·first·row.</span><span·class="w"> |
| 343 | ·········</span><span·class="n">NewCols</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">add_one_to_cols</span><span·class="p"·data-group-id="182 | 343 | ·········</span><span·class="n">NewCols</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">add_one_to_cols</span><span·class="p"·data-group-id="1738269545-38">(</span><span·class="n">Cols</span><span·class="p"·data-group-id="1738269545-38">)</span><span·class="p">,</span><span·class="w"> |
| 344 | ·········</span><span·class="nf">get_next_cols</span><span·class="p"·data-group-id="182 | 344 | ·········</span><span·class="nf">get_next_cols</span><span·class="p"·data-group-id="1738269545-39">(</span><span·class="n">NewCols</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Row</span><span·class="p"·data-group-id="1738269545-39">)</span><span·class="p">;</span><span·class="w"> |
| 345 | ·····</span><span·class="p">_</span><span·class="w">··</span><span·class="p">-></span><span·class="w"> | 345 | ·····</span><span·class="p">_</span><span·class="w">··</span><span·class="p">-></span><span·class="w"> |
| 346 | ········</span><span·class="nf">end_of_table</span><span·class="p"·data-group-id="182 | 346 | ········</span><span·class="nf">end_of_table</span><span·class="p"·data-group-id="1738269545-40">(</span><span·class="n">Cols</span><span·class="p"·data-group-id="1738269545-40">)</span><span·class="w"> |
| 347 | ········</span><span·class="k">end</span><span·class="w"> | 347 | ········</span><span·class="k">end</span><span·class="w"> |
| 348 | ····</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> | 348 | ····</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> |
| 349 | </span><span·class="c1">%%----------------------------------------------------------------</span><span·class="w"> | 349 | </span><span·class="c1">%%----------------------------------------------------------------</span><span·class="w"> |
| 350 | </span><span·class="c1">%%·If·RowStatus·is·set,·then:</span><span·class="w"> | 350 | </span><span·class="c1">%%·If·RowStatus·is·set,·then:</span><span·class="w"> |
| 351 | </span><span·class="c1">%%····*)·If·set·to·destroy,·check·that·row·does·exist</span><span·class="w"> | 351 | </span><span·class="c1">%%····*)·If·set·to·destroy,·check·that·row·does·exist</span><span·class="w"> |
| 352 | </span><span·class="c1">%%····*)·If·set·to·createAndGo,·check·that·row·does·not·exist·AND</span><span·class="w"> | 352 | </span><span·class="c1">%%····*)·If·set·to·createAndGo,·check·that·row·does·not·exist·AND</span><span·class="w"> |
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| Offset 131, 21 lines modified | Offset 131, 21 lines modified | ||
| 131 | <p>Abstract·Data·Type·for·SNMP·Indexing</p><p>The·module·<code·class="inline">snmp_index</code>·implements·an·Abstract·Data·Type·(ADT)·for·an·SNMP·index | 131 | <p>Abstract·Data·Type·for·SNMP·Indexing</p><p>The·module·<code·class="inline">snmp_index</code>·implements·an·Abstract·Data·Type·(ADT)·for·an·SNMP·index |
| 132 | structure·for·SNMP·tables.·It·is·implemented·as·an·ets·table·of·the·ordered_set | 132 | structure·for·SNMP·tables.·It·is·implemented·as·an·ets·table·of·the·ordered_set |
| 133 | data-type,·which·means·that·all·operations·are·O(log·n).·In·the·table,·the·key | 133 | data-type,·which·means·that·all·operations·are·O(log·n).·In·the·table,·the·key |
| 134 | is·an·ASN.1·OBJECT·IDENTIFIER.</p><p>This·index·is·used·to·separate·the·implementation·of·the·SNMP·ordering·from·the | 134 | is·an·ASN.1·OBJECT·IDENTIFIER.</p><p>This·index·is·used·to·separate·the·implementation·of·the·SNMP·ordering·from·the |
| 135 | actual·implementation·of·the·table.·The·SNMP·ordering,·that·is·implementation·of | 135 | actual·implementation·of·the·table.·The·SNMP·ordering,·that·is·implementation·of |
| 136 | GET·NEXT,·is·implemented·in·this·module.</p><p>For·example,·suppose·there·is·an·SNMP·table,·which·is·best·implemented·in·Erlang | 136 | GET·NEXT,·is·implemented·in·this·module.</p><p>For·example,·suppose·there·is·an·SNMP·table,·which·is·best·implemented·in·Erlang |
| 137 | as·one·process·per·SNMP·table·row.·Suppose·further·that·the·INDEX·in·the·SNMP | 137 | as·one·process·per·SNMP·table·row.·Suppose·further·that·the·INDEX·in·the·SNMP |
| 138 | table·is·an·OCTET·STRING.·The·index·structure·would·be·created·as·follows:</p><pre><code·class="text">snmp_index:new(string)</code></pre><p>For·each·new·process·we·create,·we·insert·an·item·in·an·<code·class="inline">snmp_index</code>·structure:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">new_process</span><span·class="p"·data-group-id=" | 138 | table·is·an·OCTET·STRING.·The·index·structure·would·be·created·as·follows:</p><pre><code·class="text">snmp_index:new(string)</code></pre><p>For·each·new·process·we·create,·we·insert·an·item·in·an·<code·class="inline">snmp_index</code>·structure:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">new_process</span><span·class="p"·data-group-id="9703897935-1">(</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="n">SnmpIndex</span><span·class="p"·data-group-id="9703897935-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 139 | ··</span><span·class="n">Pid</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">start_process</span><span·class="p"·data-group-id=" | 139 | ··</span><span·class="n">Pid</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">start_process</span><span·class="p"·data-group-id="9703897935-2">(</span><span·class="p"·data-group-id="9703897935-2">)</span><span·class="p">,</span><span·class="w"> |
| 140 | ··</span><span·class="n">NewSnmpIndex</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 140 | ··</span><span·class="n">NewSnmpIndex</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 141 | ····</span><span·class="nc">snmp_index</span><span·class="p">:</span><span·class="nf">insert</span><span·class="p"·data-group-id=" | 141 | ····</span><span·class="nc">snmp_index</span><span·class="p">:</span><span·class="nf">insert</span><span·class="p"·data-group-id="9703897935-3">(</span><span·class="n">SnmpIndex</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pid</span><span·class="p"·data-group-id="9703897935-3">)</span><span·class="p">,</span><span·class="w"> |
| 142 | ··</span><span·class="o"><</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="o">></span></code></pre><p>With·this·structure,·we·can·now·map·an·OBJECT·IDENTIFIER·in·e.g.·a·GET·NEXT | 142 | ··</span><span·class="o"><</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="o">></span></code></pre><p>With·this·structure,·we·can·now·map·an·OBJECT·IDENTIFIER·in·e.g.·a·GET·NEXT |
| 143 | request,·to·the·correct·process:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">get_next_pid</span><span·class="p"·data-group-id=" | 143 | request,·to·the·correct·process:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">get_next_pid</span><span·class="p"·data-group-id="9593005200-1">(</span><span·class="n">Oid</span><span·class="p">,</span><span·class="w">·</span><span·class="n">SnmpIndex</span><span·class="p"·data-group-id="9593005200-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 144 | ··</span><span·class="p"·data-group-id=" | 144 | ··</span><span·class="p"·data-group-id="9593005200-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9593005200-3">{</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pid</span><span·cla[·...·truncated·by·diffoscope;·len:·459,·SHA:·ff7550adc18ff9d0ff06285544cbb96e8a2243ce99bd468f258ae365854091b6·...·]-4">)</span><span·class="p">,</span><span·class="w"> |
| 145 | ··</span><span·class="n">Pid</span><span·class="p">.</span></code></pre><h2·id="module-warnings"·class="section-heading"> | 145 | ··</span><span·class="n">Pid</span><span·class="p">.</span></code></pre><h2·id="module-warnings"·class="section-heading"> |
| 146 | ··<a·href="#module-warnings"·class="hover-link"> | 146 | ··<a·href="#module-warnings"·class="hover-link"> |
| 147 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 147 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 148 | ··</a> | 148 | ··</a> |
| 149 | ··<span·class="text">Warnings</span> | 149 | ··<span·class="text">Warnings</span> |
| 150 | </h2> | 150 | </h2> |
| 151 | <section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p><a·href=""·id="1"></a>·All·API·functions·that·update·the·index·return·a·<code·class="inline">NewIndex</code>·term. | 151 | <section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p><a·href=""·id="1"></a>·All·API·functions·that·update·the·index·return·a·<code·class="inline">NewIndex</code>·term. |
| Offset 210, 17 lines modified | Offset 210, 17 lines modified | ||
| 210 | accessible),·and·the·table·has·three·rows.·The·instrumentation·function·for·this | 210 | accessible),·and·the·table·has·three·rows.·The·instrumentation·function·for·this |
| 211 | table·is·called·<code·class="inline">my_table</code>.</p><p><a·href=""·id="getnext1"></a></p><p><img·src="assets/getnext1.gif"·alt="Contents·of·my_table"·title="Contents·of·my_table"/></p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>N/A·means·not·accessible.</p></section><p>The·manager·issues·the·following·<code·class="inline">getNext</code>·request:</p><pre><code·class="text">getNext{·myTable.myTableEntry.3.1.1, | 211 | table·is·called·<code·class="inline">my_table</code>.</p><p><a·href=""·id="getnext1"></a></p><p><img·src="assets/getnext1.gif"·alt="Contents·of·my_table"·title="Contents·of·my_table"/></p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>N/A·means·not·accessible.</p></section><p>The·manager·issues·the·following·<code·class="inline">getNext</code>·request:</p><pre><code·class="text">getNext{·myTable.myTableEntry.3.1.1, |
| 212 | ·········myTable.myTableEntry.5.1.1·}</code></pre><p>Since·both·operations·involve·the·1.1·index,·this·is·transformed·into·one·call | 212 | ·········myTable.myTableEntry.5.1.1·}</code></pre><p>Since·both·operations·involve·the·1.1·index,·this·is·transformed·into·one·call |
| 213 | to·<code·class="inline">my_table</code>:</p><pre><code·class="text">my_table(get_next,·[1,·1],·[3,·5])</code></pre><p>In·this·call,·<code·class="inline">[1,·1]</code>·is·the·<code·class="inline">RowIndex</code>,·where·key·1·has·value·1,·and·key·2·has | 213 | to·<code·class="inline">my_table</code>:</p><pre><code·class="text">my_table(get_next,·[1,·1],·[3,·5])</code></pre><p>In·this·call,·<code·class="inline">[1,·1]</code>·is·the·<code·class="inline">RowIndex</code>,·where·key·1·has·value·1,·and·key·2·has |
| 214 | value·1,·and·<code·class="inline">[3,·5]</code>·is·the·list·of·requested·columns.·The·function·should·now | 214 | value·1,·and·<code·class="inline">[3,·5]</code>·is·the·list·of·requested·columns.·The·function·should·now |
| 215 | return·the·lexicographically·next·elements:</p><pre><code·class="text">[{[3,·1,·2],·d},·{[5,·1,·2],·f}]</code></pre><p>This·is·illustrated·in·the·following·table:</p><p><a·href=""·id="getnext2"></a></p><p><img·src="assets/getnext2.gif"·alt="GetNext·from·[3,1,1]·and·[5,1,1]."·title="GetNext·from·[3,1,1]·and·[5,1,1]."/></p><p>The·manager·now·issues·the·following·<code·class="inline">getNext</code>·request:</p><pre><code·class="text">getNext{·myTable.myTableEntry.3.2.1, | 215 | return·the·lexicographically·next·elements:</p><pre><code·class="text">[{[3,·1,·2],·d},·{[5,·1,·2],·f}]</code></pre><p>This·is·illustrated·in·the·following·table:</p><p><a·href=""·id="getnext2"></a></p><p><img·src="assets/getnext2.gif"·alt="GetNext·from·[3,1,1]·and·[5,1,1]."·title="GetNext·from·[3,1,1]·and·[5,1,1]."/></p><p>The·manager·now·issues·the·following·<code·class="inline">getNext</code>·request:</p><pre><code·class="text">getNext{·myTable.myTableEntry.3.2.1, |
| 216 | ·········myTable.myTableEntry.5.2.1·}</code></pre><p>This·is·transformed·into·one·call·to·<code·class="inline">my_table</code>:</p><pre><code·class="text">my_table(get_next,·[2,·1],·[3,·5])</code></pre><p>The·function·should·now·return:</p><pre><code·class="text">[{[4,·1,·1],·b},·endOfTable]</code></pre><p>This·is·illustrated·in·the·following·table:</p><p><a·href=""·id="getnext3"></a></p><p><img·src="assets/getnext3.gif"·alt="GetNext·from·[3,2,1]·and·[5,2,1]."·title="GetNext·from·[3,2,1]·and·[5,2,1]."/></p><p>The·manager·now·issues·the·following·<code·class="inline">getNext</code>·request:</p><pre><code·class="text">getNext{·myTable.myTableEntry.3.1.2, | 216 | ·········myTable.myTableEntry.5.2.1·}</code></pre><p>This·is·transformed·into·one·call·to·<code·class="inline">my_table</code>:</p><pre><code·class="text">my_table(get_next,·[2,·1],·[3,·5])</code></pre><p>The·function·should·now·return:</p><pre><code·class="text">[{[4,·1,·1],·b},·endOfTable]</code></pre><p>This·is·illustrated·in·the·following·table:</p><p><a·href=""·id="getnext3"></a></p><p><img·src="assets/getnext3.gif"·alt="GetNext·from·[3,2,1]·and·[5,2,1]."·title="GetNext·from·[3,2,1]·and·[5,2,1]."/></p><p>The·manager·now·issues·the·following·<code·class="inline">getNext</code>·request:</p><pre><code·class="text">getNext{·myTable.myTableEntry.3.1.2, |
| 217 | ·········myTable.myTableEntry.4.1.2·}</code></pre><p>This·will·be·transform·into·one·call·to·<code·class="inline">my_table</code>:</p><pre><code·class="text">my_table(get_next,·[1,·2],·[3,·4])</code></pre><p>The·function·should·now·return:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8983830998-1">[</span><span·class="p"·data-group-id="8983830998-2">{</span><span·class="p"·data-group-id="8983830998-3">[</span><span·class="mi">3</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">2</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="8983830998-3">]</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">g</span><span·class="p"·data-group-id="8983830998-2">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8983830998-4">{</span><span·class="p"·data-group-id="8983830998-5">[</span><span·class="mi">5</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="8983830998-5">]</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">c</span><span·class="p"·data-group-id="8983830998-4">}</span><span·class="p"·data-group-id="8983830998-1">]</span></code></pre><p>This·is·illustrated·in·the·following·table:</p><p><a·href=""·id="getnext4"></a></p><p><img·src="assets/getnext4.gif"·alt="GetNext·from·[3,1,2]·and·[4,1,2]."·title="GetNext·from·[3,1,2]·and·[4,1,2]."/></p><p>The·manager·now·issues·the·following·<code·class="inline">getNext</code>·request:</p><pre><code·class="text">getNext{·myTable.myTableEntry, | ||
| 218 | ·········myTable.myTableEntry.1.3.2·}</code></pre><p>This·will·be·transform·into·two·calls·to·<code·class="inline">my_table</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">my_table</span><span·class="p"·data-group-id="3901248932-1">(</span><span·class="ss">get_next</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3901248932-2">[</span><span·class="p"·data-group-id="3901248932-2">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3901248932-3">[</span><span·class="mi">0</span><span·class="p"·data-group-id="3901248932-3">]</span><span·class="p"·data-group-id="3901248932-1">)</span><span·class="w">·</span><span·class="ow">and</span><span·class="w"> | ||
| 219 | 217 | ·········myTable.myTableEntry.4.1.2·}</code></pre><p>This·will·be·transform·into·one·call·to·<code·class="inline">my_table</code>:</p><pre><code·class="text">my_table(get_next,·[1,·2],·[3,·4])</code></pre><p>The·function·should·now·return:</p><pre><code·cl[·...·truncated·by·diffoscope;·len:·1463,·SHA:·e4b8de5e0fda760363ee72b8be110e464c03b35de7ab4af1bc7fb8d9cd8696d6·...·] | |
| 218 | ·········myTable.myTableEntry.1.3.2·}</code></pre><p>This·will·be·transform·into·two·calls·to·<code·class="inline">my_table</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">my_table</span><span·class="p"·data-group-id="9780709408-1">(</span><span·class="ss">get_next</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9780709408-2">[</span><span·class="p"·data-group-id="9780709408-2">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9780709408-3">[</span><span·class="mi">0</span><span·class="p"·data-group-id="9780709408-3">]</span><span·class="p"·data-group-id="9780709408-1">)</span><span·class="w">·</span><span·class="ow">and</span><span·class="w"> | ||
| 219 | </span><span·class="nf">my_table</span><span·class="p"·data-group-id="9780709408-4">(</span><span·class="ss">get_next</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9780709408-5">[</span><span·class="mi">3</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">2</span><span·class="p"·data-group-id="9780709408-5">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9780709408-6">[</span><span·class="mi">1</span><span·class="p"·data-group-id="9780709408-6">]</span><span·class="p"·data-group-id="9780709408-4">)</span></code></pre><p>The·function·should·now·return:</p><pre><code·class="text">[{[3,·1,·1],·a}]·and | ||
| 220 | [{[3,·1,·1],·a}]</code></pre><p>In·both·cases,·the·first·accessible·element·in·the·table·should·be·returned.·As | 220 | [{[3,·1,·1],·a}]</code></pre><p>In·both·cases,·the·first·accessible·element·in·the·table·should·be·returned.·As |
| 221 | the·key·columns·are·not·accessible,·this·means·that·the·third·column·is·the | 221 | the·key·columns·are·not·accessible,·this·means·that·the·third·column·is·the |
| 222 | first·row.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Normally,·the·functions·described·above·behave·exactly·as·shown,·but·they·are | 222 | first·row.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Normally,·the·functions·described·above·behave·exactly·as·shown,·but·they·are |
| 223 | free·to·perform·other·actions.·For·example,·a·get-request·may·have·side | 223 | free·to·perform·other·actions.·For·example,·a·get-request·may·have·side |
| 224 | effects·such·as·setting·some·other·variable,·perhaps·a·global·<code·class="inline">lastAccessed</code> | 224 | effects·such·as·setting·some·other·variable,·perhaps·a·global·<code·class="inline">lastAccessed</code> |
| 225 | variable.</p></section><h2·id="using-the-extraargument"·class="section-heading"> | 225 | variable.</p></section><h2·id="using-the-extraargument"·class="section-heading"> |
| 226 | ··<a·href="#using-the-extraargument"·class="hover-link"> | 226 | ··<a·href="#using-the-extraargument"·class="hover-link"> |
| Offset 229, 25 lines modified | Offset 229, 25 lines modified | ||
| 229 | ··<span·class="text">Using·the·ExtraArgument</span> | 229 | ··<span·class="text">Using·the·ExtraArgument</span> |
| 230 | </h2> | 230 | </h2> |
| 231 | <p>The·<code·class="inline">ListOfExtraArguments</code>·can·be·used·to·write·generic·functions.·This·list·is | 231 | <p>The·<code·class="inline">ListOfExtraArguments</code>·can·be·used·to·write·generic·functions.·This·list·is |
| 232 | appended·to·the·standard·arguments·for·each·function.·Consider·two·read-only | 232 | appended·to·the·standard·arguments·for·each·function.·Consider·two·read-only |
| 233 | variables·for·a·device,·<code·class="inline">ipAdr</code>·and·<code·class="inline">name</code>·with·object·identifiers·1.1.23.4·and | 233 | variables·for·a·device,·<code·class="inline">ipAdr</code>·and·<code·class="inline">name</code>·with·object·identifiers·1.1.23.4·and |
| 234 | 1.1.7·respectively.·To·access·these·variables,·one·could·implement·the·two | 234 | 1.1.7·respectively.·To·access·these·variables,·one·could·implement·the·two |
| 235 | Erlang·functions·<code·class="inline">ip_access</code>·and·<code·class="inline">name_access</code>,·which·will·be·in·the·MIB.·The | 235 | Erlang·functions·<code·class="inline">ip_access</code>·and·<code·class="inline">name_access</code>,·which·will·be·in·the·MIB.·The |
| 236 | functions·could·be·specified·in·a·text·file·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 236 | functions·could·be·specified·in·a·text·file·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="5545970254-1">{</span><span·class="ss">ipAdr</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5545970254-2">{</span><span·class="ss">my_module</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ip_acc[·...·truncated·by·diffoscope;·len:·258,·SHA:·ba897eab2cecc08ab26e3243690cf019f1d14ab4899c49e169cdfe5335ac8953·...·]-1">}</span><span·class="p">.</span><span·class="w"> |
| 237 | </span><span·class="c1">%·Or·using·the·oid·syntax·for·'name'</span><span·class="w"> | 237 | </span><span·class="c1">%·Or·using·the·oid·syntax·for·'name'</span><span·class="w"> |
| 238 | </span><span·class="p"·data-group-id=" | 238 | </span><span·class="p"·data-group-id="5545970254-4">{</span><span·class="p"·data-group-id="5545970254-5">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">7</span><span·class="p"·data-group-id="5545970254-5">]</span><span[·...·truncated·by·diffoscope;·len:·460,·SHA:·6126aa4474f9409659e353babd8acafabc473cc46f976780cb46113e530585e1·...·]-4">}</span><span·class="p">.</span></code></pre><p>The·<code·class="inline">ExtraArgument</code>·parameter·is·the·empty·list.·For·example,·when·the·agent |
| 239 | receives·a·get-request·for·the·<code·class="inline">ipAdr</code>·variable,·a·call·will·be·made·to | 239 | receives·a·get-request·for·the·<code·class="inline">ipAdr</code>·variable,·a·call·will·be·made·to |
| 240 | <code·class="inline">ip_access(get)</code>.·The·value·returned·by·this·function·is·the·answer·to·the | 240 | <code·class="inline">ip_access(get)</code>.·The·value·returned·by·this·function·is·the·answer·to·the |
| 241 | get-request.</p><p>If·<code·class="inline">ip_access</code>·and·<code·class="inline">name_access</code>·are·implemented·similarly,·we·could·write·a | 241 | get-request.</p><p>If·<code·class="inline">ip_access</code>·and·<code·class="inline">name_access</code>·are·implemented·similarly,·we·could·write·a |
| 242 | <code·class="inline">generic_access</code>·function·using·the·<code·class="inline">ListOfExtraArguments</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 242 | <code·class="inline">generic_access</code>·function·using·the·<code·class="inline">ListOfExtraArguments</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="0827423536-1">{</span><span·class="ss">ipAdr</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0827423536-2">{</span><span·class="ss">my_module</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">generi[·...·truncated·by·diffoscope;·len:·301,·SHA:·63629f092db74bf04345d55e0a05a56d1067209ec25cdb1a4f9925be69c2617f·...·]6-1">}</span><span·class="p">.</span><span·class="w"> |
| 243 | </span><span·class="c1">%·The·mnemonic·'name'·is·more·convenient·than·1.1.7</span><span·class="w"> | 243 | </span><span·class="c1">%·The·mnemonic·'name'·is·more·convenient·than·1.1.7</span><span·class="w"> |
| 244 | </span><span·class="p"·data-group-id=" | 244 | </span><span·class="p"·data-group-id="0827423536-4">{</span><span·class="ss">name</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0827423536-5">{</span><span·class="ss">my_module</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">generic[·...·truncated·by·diffoscope;·len:·299,·SHA:·5384fb5cd914652160361305ff97b96d6b7a81e0b09b8e934e7c7cfd1196d02e·...·]6-4">}</span><span·class="p">.</span></code></pre><p>When·the·agent·receives·the·same·get-request·as·above,·a·call·will·be·made·to |
| 245 | <code·class="inline">generic_access(get,</code>'<code·class="inline">IPADR')</code>.</p><p>Yet·another·possibility,·closer·to·the·hardware,·could·be:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="1 | 245 | <code·class="inline">generic_access(get,</code>'<code·class="inline">IPADR')</code>.</p><p>Yet·another·possibility,·closer·to·the·hardware,·could·be:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="1279854067-1">{</span><span·class="ss">ipAdr</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1279854067-2">{</span><span·class="ss">my_module</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">generic[·...·truncated·by·diffoscope;·len:·293,·SHA:·b35e546e80675e0e3f3fdbe377fcd344b4e6e4f8a63a72c2b78b20c1f6c13148·...·]-1">}</span><span·class="p">.</span><span·class="w"> |
| 246 | </span><span·class="p"·data-group-id="1 | 246 | </span><span·class="p"·data-group-id="1279854067-4">{</span><span·class="ss">name</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1279854067-5">{</span><span·class="ss">my_module</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">generic_[·...·truncated·by·diffoscope;·len:·292,·SHA:·0b4f4b78c7e250035477f361d9f0b572cddfff1f3a26009fc15caf8933363523·...·]-4">}</span><span·class="p">.</span></code></pre><h2·id="default-instrumentation"·class="section-heading"> |
| 247 | ··<a·href="#default-instrumentation"·class="hover-link"> | 247 | ··<a·href="#default-instrumentation"·class="hover-link"> |
| 248 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 248 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 249 | ··</a> | 249 | ··</a> |
| 250 | ··<span·class="text">Default·Instrumentation</span> | 250 | ··<span·class="text">Default·Instrumentation</span> |
| 251 | </h2> | 251 | </h2> |
| 252 | <p><a·href=""·id="snmp_3"></a></p><p>When·the·MIB·definition·work·is·finished,·there·are·two·major·issues·left.</p><ul><li>Implementing·the·MIB</li><li>Implementing·a·Manager·Application.</li></ul><p>Implementing·an·MIB·can·be·a·tedious·task.·Most·probably,·there·is·a·need·to | 252 | <p><a·href=""·id="snmp_3"></a></p><p>When·the·MIB·definition·work·is·finished,·there·are·two·major·issues·left.</p><ul><li>Implementing·the·MIB</li><li>Implementing·a·Manager·Application.</li></ul><p>Implementing·an·MIB·can·be·a·tedious·task.·Most·probably,·there·is·a·need·to |
| 253 | test·the·agent·before·all·tables·and·variables·are·implemented.·In·this·case, | 253 | test·the·agent·before·all·tables·and·variables·are·implemented.·In·this·case, |
| Offset 145, 46 lines modified | Offset 145, 46 lines modified | ||
| 145 | and·<code·class="inline">IpPort</code>·is·an·integer.</p><p>When·<code·class="inline">Addr</code>·does·not·contain·a·port·number,·the·value·of·<code·class="inline">port</code>·is·used.</p><p>When·a·<code·class="inline">Addr</code>·is·not·specified·i.e·by·using·only·a·<code·class="inline">Domain</code>·atom,·the | 145 | and·<code·class="inline">IpPort</code>·is·an·integer.</p><p>When·<code·class="inline">Addr</code>·does·not·contain·a·port·number,·the·value·of·<code·class="inline">port</code>·is·used.</p><p>When·a·<code·class="inline">Addr</code>·is·not·specified·i.e·by·using·only·a·<code·class="inline">Domain</code>·atom,·the |
| 146 | host's·name·is·resolved·to·find·the·IP·address,·and·the·value·of·<code·class="inline">port</code>·is | 146 | host's·name·is·resolved·to·find·the·IP·address,·and·the·value·of·<code·class="inline">port</code>·is |
| 147 | used.</p></li></ul></li><li><p><code·class="inline">port</code>·-·which·defines·which·UDP·port·the·manager·uses·for·communicating | 147 | used.</p></li></ul></li><li><p><code·class="inline">port</code>·-·which·defines·which·UDP·port·the·manager·uses·for·communicating |
| 148 | with·agents.·<em>Mandatory</em>·if·<code·class="inline">transports</code>·does·not·define·a·port·number·for | 148 | with·agents.·<em>Mandatory</em>·if·<code·class="inline">transports</code>·does·not·define·a·port·number·for |
| 149 | every·transport.</p></li><li><p><code·class="inline">engine_id</code>·-·The·<code·class="inline">SnmpEngineID</code>·as·defined·in·SNMP-FRAMEWORK-MIB. | 149 | every·transport.</p></li><li><p><code·class="inline">engine_id</code>·-·The·<code·class="inline">SnmpEngineID</code>·as·defined·in·SNMP-FRAMEWORK-MIB. |
| 150 | <em>Mandatory</em>.</p></li><li><p><code·class="inline">max_message_size</code>·-·The·<code·class="inline">snmpEngineMaxMessageSize</code>·as·defined·in | 150 | <em>Mandatory</em>.</p></li><li><p><code·class="inline">max_message_size</code>·-·The·<code·class="inline">snmpEngineMaxMessageSize</code>·as·defined·in |
| 151 | SNMP-FRAMEWORK-MIB.·<em>Mandatory</em>.</p></li></ul></li><li><p><code·class="inline">Value</code>·is·the·value·for·the·variable.</p></li></ul><p>The·legacy·and·intermediate·variables·<code·class="inline">address</code>·and·<code·class="inline">domain</code>·are·still·supported | 151 | SNMP-FRAMEWORK-MIB.·<em>Mandatory</em>.</p></li></ul></li><li><p><code·class="inline">Value</code>·is·the·value·for·the·variable.</p></li></ul><p>The·legacy·and·intermediate·variables·<code·class="inline">address</code>·and·<code·class="inline">domain</code>·are·still·supported |
| 152 | so·old·configurations·will·work.</p><p>The·following·example·shows·a·<code·class="inline">manager.conf</code>·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8 | 152 | so·old·configurations·will·work.</p><p>The·following·example·shows·a·<code·class="inline">manager.conf</code>·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8484508414-1">{</span><span·class="ss">transports</span><span·class="p">,</span><span·class="w">·······</span><span·class="p"·data-group-id="8484508414-2">[</span><span·class="p"·data-group-id="8484508414-3">{</span><span·class="ss">transportDomainUdpIpv4</[·...·truncated·by·diffoscope;·len:·560,·SHA:·2a0c26d36a843e642fd6524bbbd4581ce46e9f1bb9ada9ae9ec93936f214b01c·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 153 | ····················</span><span·class="p"·data-group-id="8 | 153 | ····················</span><span·class="p"·data-group-id="8484508414-6">{</span><span·class="ss">transportDomainUdpIpv6</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8484508414-7">{</span><span·class="p"·data-group-id="8484508414-8">{</span><span·class="mi">0</span><span·clas[·...·truncated·by·diffoscope;·len:·662,·SHA:·ed978eaf9a794c175172989c5c2e13a5a3032ad6c749da22c3dfcca5e1216753·...·]-1">}</span><span·class="p">.</span><span·class="w"> |
| 154 | </span><span·class="p"·data-group-id="8 | 154 | </span><span·class="p"·data-group-id="8484508414-9">{</span><span·class="ss">engine_id</span><span·class="p">,</span><span·class="w">········</span><span·class="s">"mgrEngine"</span><span·class="p"·data-group-id="8484508414-9">}</span><span·class="p">.</span><span·class="w"> |
| 155 | </span><span·class="p"·data-group-id="8 | 155 | </span><span·class="p"·data-group-id="8484508414-10">{</span><span·class="ss">max_message_size</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">484</span><span·class="p"·data-group-id="8484508414-10">}</span><span·class="p">.</span></code></pre><p>The·value·of·<code·class="inline">engine_id</code>·is·a·string,·which·should·have·a·very·specific |
| 156 | structure.·See·RFC·2271/2571·for·details.</p><p>And·this·is·a·code·(snippet)·example·of·how·to·generate·this·file·in·runtime:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">ManagerDir</span><span·class="w">····</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"/tmp"</span><span·class="p">,</span><span·class="w"> | 156 | structure.·See·RFC·2271/2571·for·details.</p><p>And·this·is·a·code·(snippet)·example·of·how·to·generate·this·file·in·runtime:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">ManagerDir</span><span·class="w">····</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"/tmp"</span><span·class="p">,</span><span·class="w"> |
| 157 | </span><span·class="n">Port</span><span·class="w">··········</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">5000</span><span·class="p">,</span><span·class="w"> | 157 | </span><span·class="n">Port</span><span·class="w">··········</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">5000</span><span·class="p">,</span><span·class="w"> |
| 158 | </span><span·class="n">Addr4</span><span·class="w">·········</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 158 | </span><span·class="n">Addr4</span><span·class="w">·········</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4865414567-1">{</span><span·class="mi">141</span><span·class="p">,</span><span·class="mi">213</span><span·class="p">,</span><span·class="mi">11</span><span·class="p">,</span><span·class="mi">24</span><span·class="p"·data-group-id="4865414567-1">}</span><span·class="p">,</span><span·class="w"> |
| 159 | </span><span·class="n">Addr6</span><span·class="w">·········</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 159 | </span><span·class="n">Addr6</span><span·class="w">·········</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4865414567-2">{</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="[·...·truncated·by·diffoscope;·len:·175,·SHA:·57f9b0100349004355f6b967a610f51cc90057c421602b8640f7f0fee7b783ba·...·]-2">}</span><span·class="p">,</span><span·class="w"> |
| 160 | </span><span·class="n">Transports</span><span·class="w">····</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="5093249771-3">[</span><span·class="p"·data-group-id="5093249771-4">{</span><span·class="ss">transportDomainUdpIpv4</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5093249771-5">{</span><span·class="n">Addr4</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Port</span><span·class="p"·data-group-id="5093249771-5">}</span><span·class="p"·data-group-id="5093249771-4">}</span><span·class="p">,</span><span·class="w"> | ||
| 161 | 160 | </span><span·class="n">Transports</span><span·class="w">····</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4865414567-3">[</span><span·class="p"·data-group-id="4865414567-4">{</span><span·class="ss">transportDomainUdp[·...·truncated·by·diffoscope;·len:·314,·SHA:·6c916672de803f82c6521b1f9f9477ae5a80cc201e72163db1f3b18b0340b7aa·...·]</span><span·class="p">,</span><span·class="w"> | |
| 161 | ·················</span><span·class="p"·data-group-id="4865414567-6">{</span><span·class="ss">transportDomainUdpIpv6</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4865414567-7">{</span><span·class="n">Addr6</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Port</span><span·class="p"·data-group-id="4865414567-7">}</span><span·class="p"·data-group-id="4865414567-6">}</span><span·class="p"·data-group-id="4865414567-3">]</span><span·class="p">,</span><span·class="w"> | ||
| 162 | </span><span·class="n">EngineID</span><span·class="w">······</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"mgrEngine"</span><span·class="p">,</span><span·class="w"> | 162 | </span><span·class="n">EngineID</span><span·class="w">······</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"mgrEngine"</span><span·class="p">,</span><span·class="w"> |
| 163 | </span><span·class="n">MMS</span><span·class="w">···········</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">484</span><span·class="p">,</span><span·class="w"> | 163 | </span><span·class="n">MMS</span><span·class="w">···········</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">484</span><span·class="p">,</span><span·class="w"> |
| 164 | </span><span·class="n">ManagerConfig</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 164 | </span><span·class="n">ManagerConfig</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4865414567-8">[</span><span·class="nc">snmpm_conf</span><span·class="p">:</span><span·class="nf">manager_entry</span><span·class="p"·data-group-id="4865414567-9">(</span><span·class="ss">transports</span><span·class="p">,</span><span·class="w">·······</spa[·...·truncated·by·diffoscope;·len:·76,·SHA:·5953254f4185c94134eb327c8e161ab3567063866ef9369b3fa1b460d3a00e4d·...·]-9">)</span><span·class="p">,</span><span·class="w"> |
| 165 | ·················</span><span·class="nc">snmpm_conf</span><span·class="p">:</span><span·class="nf">manager_entry</span><span·class="p"·data-group-id=" | 165 | ·················</span><span·class="nc">snmpm_conf</span><span·class="p">:</span><span·class="nf">manager_entry</span><span·class="p"·data-group-id="4865414567-10">(</span><span·class="ss">engine_id</span><span·class="p">,</span><span·class="w">········</span><span·class="n">EngineID</span><span·class="p"·data-group-id="4865414567-10">)</span><span·class="p">,</span><span·class="w"> |
| 166 | ·················</span><span·class="nc">snmpm_conf</span><span·class="p">:</span><span·class="nf">manager_entry</span><span·class="p"·data-group-id=" | 166 | ·················</span><span·class="nc">snmpm_conf</span><span·class="p">:</span><span·class="nf">manager_entry</span><span·class="p"·data-group-id="4865414567-11">(</span><span·class="ss">max_message_size</span><span·class="p">,</span><span·class="w">·</span><span·class="n">MMS</span><span·class="p"·data-group-id="4865414567-11">)</span><span·class="p"·data-group-id="4865414567-8">]</span><span·class="p">,</span><span·class="w"> |
| 167 | </span><span·class="nc">snmpm_conf</span><span·class="p">:</span><span·class="nf">write_manager_config</span><span·class="p"·data-group-id=" | 167 | </span><span·class="nc">snmpm_conf</span><span·class="p">:</span><span·class="nf">write_manager_config</span><span·class="p"·data-group-id="4865414567-12">(</span><span·class="n">ManagerDir</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ManagerConfig</span><span·class="p"·data-group-id="4865414567-12">)</span><span·class="p">,</span></code></pre><h2·id="users"·class="section-heading"> |
| 168 | ··<a·href="#users"·class="hover-link"> | 168 | ··<a·href="#users"·class="hover-link"> |
| 169 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 169 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 170 | ··</a> | 170 | ··</a> |
| 171 | ··<span·class="text">Users</span> | 171 | ··<span·class="text">Users</span> |
| 172 | </h2> | 172 | </h2> |
| 173 | <p>For·each·<em>manager·user</em>,·the·manager·needs·some·information.·This·information·is | 173 | <p>For·each·<em>manager·user</em>,·the·manager·needs·some·information.·This·information·is |
| 174 | either·added·in·the·<code·class="inline">users.conf</code>·config·file·or·by·calling·the | 174 | either·added·in·the·<code·class="inline">users.conf</code>·config·file·or·by·calling·the |
| 175 | <a·href="snmpm.html#register_user/4">register_user</a>·function·in·run-time.</p><p>Each·row·defines·a·<em>manager·user</em>·of·the·manager.</p><p>Each·entry·is·a·tuple·of·size·four:</p><p><code·class="inline">{UserId,·UserMod,·UserData,·DefaultAgentConfig}.</code></p><ul><li><code·class="inline">UserId</code>·is·any·term·(used·to·uniquely·identify·the·user).</li><li><code·class="inline">UserMod</code>·is·the·user·callback·module·(atom).</li><li><code·class="inline">UserData</code>·is·any·term·(passed·on·to·the·user·when·calling·the·<code·class="inline">UserMod</code>.</li><li><code·class="inline">DefaultAgentConfig</code>·is·a·list·of·default·agent·config's.·These·values·are | 175 | <a·href="snmpm.html#register_user/4">register_user</a>·function·in·run-time.</p><p>Each·row·defines·a·<em>manager·user</em>·of·the·manager.</p><p>Each·entry·is·a·tuple·of·size·four:</p><p><code·class="inline">{UserId,·UserMod,·UserData,·DefaultAgentConfig}.</code></p><ul><li><code·class="inline">UserId</code>·is·any·term·(used·to·uniquely·identify·the·user).</li><li><code·class="inline">UserMod</code>·is·the·user·callback·module·(atom).</li><li><code·class="inline">UserData</code>·is·any·term·(passed·on·to·the·user·when·calling·the·<code·class="inline">UserMod</code>.</li><li><code·class="inline">DefaultAgentConfig</code>·is·a·list·of·default·agent·config's.·These·values·are |
| 176 | used·as·default·values·when·this·user·registers·agents.</li></ul><p>And·this·is·a·code·(snippet)·example·of·how·to·generate·this·file·in·runtime:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">ManagerDir</span><span·class="w">·········</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"/tmp"</span><span·class="p">,</span><span·class="w"> | 176 | used·as·default·values·when·this·user·registers·agents.</li></ul><p>And·this·is·a·code·(snippet)·example·of·how·to·generate·this·file·in·runtime:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">ManagerDir</span><span·class="w">·········</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"/tmp"</span><span·class="p">,</span><span·class="w"> |
| 177 | </span><span·class="n">UserID</span><span·class="w">·············</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">make_ref</span><span·class="p"·data-group-id=" | 177 | </span><span·class="n">UserID</span><span·class="w">·············</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">make_ref</span><span·class="p"·data-group-id="8499178378-1">(</span><span·class="p"·data-group-id="8499178378-1">)</span><span·class="p">,</span><span·class="w"> |
| 178 | </span><span·class="n">UserMod</span><span·class="w">············</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">my_manager_callback_mod</span><span·class="p">,</span><span·class="w"> | 178 | </span><span·class="n">UserMod</span><span·class="w">············</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">my_manager_callback_mod</span><span·class="p">,</span><span·class="w"> |
| 179 | </span><span·class="n">UserData</span><span·class="w">···········</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id=" | 179 | </span><span·class="n">UserData</span><span·class="w">···········</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="8499178378-2">(</span><span·class="p"·data-group-id="8499178378-2">)</span><span·class="p">,</span><span·class="w"> |
| 180 | </span><span·class="n">DefaultAgentConfig</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 180 | </span><span·class="n">DefaultAgentConfig</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="8499178378-3">[</span><span·class="p"·data-group-id="8499178378-4">{</span><span·class="ss">version</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">v1</span><span·class="p"·data-group-id="8499178378-4">}</span><span·class="p">,</span[·...·truncated·by·diffoscope;·len:·547,·SHA:·ac35d005336df8ef5c503d2a91cca4aa55be0c8ae2a3954c1b2599b0fd83181c·...·]8-3">]</span><span·class="p">,</span><span·class="w"> |
| 181 | </span><span·class="n">UsersConfig</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 181 | </span><span·class="n">UsersConfig</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="8499178378-7">[</span><span·class="nc">snmpm_conf</span><span·class="p">:</span><span·class="nf">users_entry</span><span·class="p"·data-group-id="8499178378-8">(</span><span·class="n">UserID</span><span·class="p">,</span><span·class="w">·</span><span·class="n">UserMod</span><span·class="p">,</span><span·class="w">·</span><span·class="n">UserData</span><span·class="p">,</span><span·class="w"> |
| 182 | ······································</span><span·class="n">DefaultAgentConfig</span><span·class="p"·data-group-id=" | 182 | ······································</span><span·class="n">DefaultAgentConfig</span><span·class="p"·data-group-id="8499178378-8">)</span><span·class="p"·data-group-id="8499178378-7">]</span><span·class="p">,</span><span·class="w"> |
| 183 | </span><span·class="nc">snmpm_conf</span><span·class="p">:</span><span·class="nf">write_users_config</span><span·class="p"·data-group-id=" | 183 | </span><span·class="nc">snmpm_conf</span><span·class="p">:</span><span·class="nf">write_users_config</span><span·class="p"·data-group-id="8499178378-9">(</span><span·class="n">ManagerDir</span><span·class="p">,</span><span·class="w">·</span><span·class="n">UsersConfig</span><span·class="p"·data-group-id="8499178378-9">)</span><span·class="p">,</span></code></pre><h2·id="agents"·class="section-heading"> |
| 184 | ··<a·href="#agents"·class="hover-link"> | 184 | ··<a·href="#agents"·class="hover-link"> |
| 185 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 185 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 186 | ··</a> | 186 | ··</a> |
| 187 | ··<span·class="text">Agents</span> | 187 | ··<span·class="text">Agents</span> |
| 188 | </h2> | 188 | </h2> |
| 189 | <p>The·information·needed·to·handle·agents·should·be·stored·in·a·file·called | 189 | <p>The·information·needed·to·handle·agents·should·be·stored·in·a·file·called |
| 190 | <code·class="inline">agents.conf</code>.·It·is·also·possible·to·add·agents·in·run-time·by·calling·the | 190 | <code·class="inline">agents.conf</code>.·It·is·also·possible·to·add·agents·in·run-time·by·calling·the |
| Offset 194, 31 lines modified | Offset 194, 31 lines modified | ||
| 194 | tuple·or·a·traditional·SNMP·integer·list·containing·port·number.·<code·class="inline">IpAddr</code>·is | 194 | tuple·or·a·traditional·SNMP·integer·list·containing·port·number.·<code·class="inline">IpAddr</code>·is |
| 195 | either·a·regular·Erlang/OTP·<a·href="../../../../lib/kernel-10.2.3/doc/html/inet.html#t:ip_address/0"><code·class="inline">ip_address()</code></a>·or·a | 195 | either·a·regular·Erlang/OTP·<a·href="../../../../lib/kernel-10.2.3/doc/html/inet.html#t:ip_address/0"><code·class="inline">ip_address()</code></a>·or·a |
| 196 | traditional·SNMP·integer·list·not·containing·port·number,·and·<code·class="inline">IpPort</code>·is·an | 196 | traditional·SNMP·integer·list·not·containing·port·number,·and·<code·class="inline">IpPort</code>·is·an |
| 197 | integer.</li><li><code·class="inline">EngineID</code>·is·the·engine-id·of·the·agent·(string).</li><li><p><code·class="inline">Timeout</code>·is·re-transmission·timeout·(<code·class="inline">infinity</code>·|·integer).</p></li><li><code·class="inline">MaxMessageSize</code>·is·the·max·message·size·for·outgoing·messages·to·this·agent | 197 | integer.</li><li><code·class="inline">EngineID</code>·is·the·engine-id·of·the·agent·(string).</li><li><p><code·class="inline">Timeout</code>·is·re-transmission·timeout·(<code·class="inline">infinity</code>·|·integer).</p></li><li><code·class="inline">MaxMessageSize</code>·is·the·max·message·size·for·outgoing·messages·to·this·agent |
| 198 | (integer).</li><li><p><code·class="inline">Version</code>·is·the·version·(v1·|·v2·|·v3).</p></li><li><p><code·class="inline">SecModel</code>·is·the·security·model·(any·|·v1·|·v2c·|·usm).</p></li><li><code·class="inline">SecName</code>·is·the·security·name·(string).</li><li><p><code·class="inline">SecLevel</code>·is·security·level·(noAuthNoPriv·|·authNoPriv·|·authPriv).</p></li></ul><p>Legacy·configurations·using·tuples·without·<code·class="inline">Domain</code>·element,·as·well·as·with·all | 198 | (integer).</li><li><p><code·class="inline">Version</code>·is·the·version·(v1·|·v2·|·v3).</p></li><li><p><code·class="inline">SecModel</code>·is·the·security·model·(any·|·v1·|·v2c·|·usm).</p></li><li><code·class="inline">SecName</code>·is·the·security·name·(string).</li><li><p><code·class="inline">SecLevel</code>·is·security·level·(noAuthNoPriv·|·authNoPriv·|·authPriv).</p></li></ul><p>Legacy·configurations·using·tuples·without·<code·class="inline">Domain</code>·element,·as·well·as·with·all |
| 199 | <code·class="inline">TDomain</code>,·<code·class="inline">Ip</code>·and·<code·class="inline">Port</code>·elements·still·work.</p><p>And·this·is·a·code·(snippet)·example·of·how·to·generate·this·file·in·runtime:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">ManagerDir</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"/tmp"</span><span·class="p">,</span><span·class="w"> | 199 | <code·class="inline">TDomain</code>,·<code·class="inline">Ip</code>·and·<code·class="inline">Port</code>·elements·still·work.</p><p>And·this·is·a·code·(snippet)·example·of·how·to·generate·this·file·in·runtime:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">ManagerDir</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"/tmp"</span><span·class="p">,</span><span·class="w"> |
| 200 | </span><span·class="n">UserID</span><span·class="w">·······</span><span·class="o">=</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 200 | </span><span·class="n">UserID</span><span·class="w">·······</span><span·class="o">=</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 201 | </span><span·class="n">AgentsConfig</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 201 | </span><span·class="n">AgentsConfig</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4445512212-1">[</span><span·class="nc">snmpm_conf</span><span·class="p">:</span><span·class="nf">agents_entry</span><span·class="p"·data-group-id="4445512212-2">(</span><span·class="n">UserID</span><span·class="p">,</span><span·class="w"> |
| 202 | ········································</span><span·class="s">"target·1"</span><span·class="p">,</span><span·class="w"> | 202 | ········································</span><span·class="s">"target·1"</span><span·class="p">,</span><span·class="w"> |
| 203 | » » » » » </span><span·class="s">"FOOBAR"</span><span·class="p">,</span><span·class="w"> | 203 | » » » » » </span><span·class="s">"FOOBAR"</span><span·class="p">,</span><span·class="w"> |
| 204 | » » » » » </span><span·class="ss">transportDomainUdpIpv4</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id=" | 204 | » » » » » </span><span·class="ss">transportDomainUdpIpv4</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4445512212-3">{</span><span·class="p"·data-group-id="4445512212-4">{</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">4</span><span·cla[·...·truncated·by·diffoscope;·len:·136,·SHA:·2725423f9681b2d2054b401fd565250b7fe77a4d1214d00872c3c78d783d684c·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 205 | » » » » » </span><span·class="s">"agent·Engine·1"</span><span·class="w"> | 205 | » » » » » </span><span·class="s">"agent·Engine·1"</span><span·class="w"> |
| 206 | » » » » » </span><span·class="mi">1500</span><span·class="p">,</span><span·class="w"> | 206 | » » » » » </span><span·class="mi">1500</span><span·class="p">,</span><span·class="w"> |
| 207 | » » » » » </span><span·class="mi">484</span><span·class="p">.</span><span·class="w"> | 207 | » » » » » </span><span·class="mi">484</span><span·class="p">.</span><span·class="w"> |
| 208 | » » » » » </span><span·class="ss">v1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">v1</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"sec·name·1"</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">noAuthNoPriv</span><span·class="p"·data-group-id=" | 208 | » » » » » </span><span·class="ss">v1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">v1</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"sec·name·1"</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">noAuthNoPriv</span><span·class="p"·data-group-id="4445512212-2">)</span><span·class="p">,</span><span·class="w"> |
| 209 | » » </span><span·class="nc">snmpm_conf</span><span·class="p">:</span><span·class="nf">agents_entry</span><span·class="p"·data-group-id=" | 209 | » » </span><span·class="nc">snmpm_conf</span><span·class="p">:</span><span·class="nf">agents_entry</span><span·class="p"·data-group-id="4445512212-5">(</span><span·class="n">UserID</span><span·class="p">,</span><span·class="w"> |
| 210 | ········································</span><span·class="s">"target·2"</span><span·class="p">,</span><span·class="w"> | 210 | ········································</span><span·class="s">"target·2"</span><span·class="p">,</span><span·class="w"> |
| 211 | » » » » » </span><span·class="s">"FOOBAR"</span><span·class="p">,</span><span·class="w"> | 211 | » » » » » </span><span·class="s">"FOOBAR"</span><span·class="p">,</span><span·class="w"> |
| 212 | » » » » » </span><span·class="ss">transportDomainUdpIpv4</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id=" | 212 | » » » » » </span><span·class="ss">transportDomainUdpIpv4</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4445512212-6">{</span><span·class="p"·data-group-id="4445512212-7">{</span><span·class="mi">5</span><span·class="p">,</span><span·class="mi">6</span><span·class="p">,</span><span·class="mi">7</span><span·class="p">,</span><span·class="mi">8</span><span·cla[·...·truncated·by·diffoscope;·len:·136,·SHA:·fabf97381e0e863e00d8d5fd27f4737c8a6a86fab0eda1e0c05bf111c4fae839·...·]-6">}</span><span·class="p">,</span><span·class="w"> |
| 213 | » » » » » </span><span·class="s">"agent·Engine·2"</span><span·class="w"> | 213 | » » » » » </span><span·class="s">"agent·Engine·2"</span><span·class="w"> |
| 214 | » » » » » </span><span·class="mi">1500</span><span·class="p">,</span><span·class="w"> | 214 | » » » » » </span><span·class="mi">1500</span><span·class="p">,</span><span·class="w"> |
| 215 | » » » » » </span><span·class="mi">1000</span><span·class="p">.</span><span·class="w"> | 215 | » » » » » </span><span·class="mi">1000</span><span·class="p">.</span><span·class="w"> |
| 216 | » » » » » </span><span·class="ss">v1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">v1</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"sec·name·2"</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">noAuthNoPriv</span><span·class="p"·data-group-id=" | 216 | » » » » » </span><span·class="ss">v1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">v1</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"sec·name·2"</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">noAuthNoPriv</span><span·class="p"·data-group-id="4445512212-5">)</span><span·class="p"·data-group-id="4445512212-1">]</span><span·class="p">,</span><span·class="w"> |
| 217 | </span><span·class="nc">snmpm_conf</span><span·class="p">:</span><span·class="nf">write_agents_config</span><span·class="p"·data-group-id=" | 217 | </span><span·class="nc">snmpm_conf</span><span·class="p">:</span><span·class="nf">write_agents_config</span><span·class="p"·data-group-id="4445512212-8">(</span><span·class="n">ManagerDir</span><span·class="p">,</span><span·class="w">·</span><span·class="n">UsersConfig</span><span·class="p"·data-group-id="4445512212-8">)</span><span·class="p">,</span></code></pre><h2·id="security-data-for-usm"·class="section-heading"> |
| 218 | ··<a·href="#security-data-for-usm"·class="hover-link"> | 218 | ··<a·href="#security-data-for-usm"·class="hover-link"> |
| 219 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 219 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 220 | ··</a> | 220 | ··</a> |
| 221 | ··<span·class="text">Security·data·for·USM</span> | 221 | ··<span·class="text">Security·data·for·USM</span> |
| 222 | </h2> | 222 | </h2> |
| 223 | <p>The·information·about·Security·data·for·USM·should·be·stored·in·a·file·called | 223 | <p>The·information·about·Security·data·for·USM·should·be·stored·in·a·file·called |
| 224 | <code·class="inline">usm.conf</code>,·which·must·be·present·if·the·manager·wishes·to·use·SNMPv3·when | 224 | <code·class="inline">usm.conf</code>,·which·must·be·present·if·the·manager·wishes·to·use·SNMPv3·when |
| Offset 229, 21 lines modified | Offset 229, 21 lines modified | ||
| 229 | <code·class="inline">usmHMAC192SH256AuthProtocol</code>,·<code·class="inline">usmHMAC256SHA384AuthProtocol</code>·or | 229 | <code·class="inline">usmHMAC192SH256AuthProtocol</code>,·<code·class="inline">usmHMAC256SHA384AuthProtocol</code>·or |
| 230 | <code·class="inline">usmHMAC384SHA512AuthProtocol</code>.</p></li><li><p><code·class="inline">AuthKey</code>·is·a·list·(of·integer).·This·is·the·User's·secret·localized | 230 | <code·class="inline">usmHMAC384SHA512AuthProtocol</code>.</p></li><li><p><code·class="inline">AuthKey</code>·is·a·list·(of·integer).·This·is·the·User's·secret·localized |
| 231 | authentication·key.·It·is·not·visible·in·the·MIB.·The·length·(number·of | 231 | authentication·key.·It·is·not·visible·in·the·MIB.·The·length·(number·of |
| 232 | octets)·of·this·key·needs·to·be:</p><ul><li>16·if·<code·class="inline">usmHMACMD5AuthProtocol</code>.</li><li>20·if·<code·class="inline">usmHMACSHAAuthProtocol</code>.</li><li>28·if·<code·class="inline">usmHMAC128SHA224AuthProtocol</code>.</li><li>32·if·<code·class="inline">usmHMAC192SHA256AuthProtocol</code>.</li><li>48·if·<code·class="inline">usmHMAC256SHA384AuthProtocol</code>.</li><li>64·if·<code·class="inline">usmHMAC384SHA512AuthProtocol</code>.</li></ul></li><li><p><code·class="inline">PrivP</code>·is·a·<code·class="inline">usmNoPrivProtocol</code>,·<code·class="inline">usmDESPrivProtocol</code>·or | 232 | octets)·of·this·key·needs·to·be:</p><ul><li>16·if·<code·class="inline">usmHMACMD5AuthProtocol</code>.</li><li>20·if·<code·class="inline">usmHMACSHAAuthProtocol</code>.</li><li>28·if·<code·class="inline">usmHMAC128SHA224AuthProtocol</code>.</li><li>32·if·<code·class="inline">usmHMAC192SHA256AuthProtocol</code>.</li><li>48·if·<code·class="inline">usmHMAC256SHA384AuthProtocol</code>.</li><li>64·if·<code·class="inline">usmHMAC384SHA512AuthProtocol</code>.</li></ul></li><li><p><code·class="inline">PrivP</code>·is·a·<code·class="inline">usmNoPrivProtocol</code>,·<code·class="inline">usmDESPrivProtocol</code>·or |
| 233 | <code·class="inline">usmAesCfb128Protocol</code>.</p></li><li><p><code·class="inline">PrivKey</code>·is·a·list·(of·integer).·This·is·the·User's·secret·localized | 233 | <code·class="inline">usmAesCfb128Protocol</code>.</p></li><li><p><code·class="inline">PrivKey</code>·is·a·list·(of·integer).·This·is·the·User's·secret·localized |
| 234 | encryption·key.·It·is·not·visible·in·the·MIB.·The·length·of·this·key·needs·to | 234 | encryption·key.·It·is·not·visible·in·the·MIB.·The·length·of·this·key·needs·to |
| 235 | be·16·if·<code·class="inline">usmDESPrivProtocol</code>·or·<code·class="inline">usmAesCfb128Protocol</code>·is·used.</p></li></ul><pre><code·class="makeup·erlang"·translate="no"><span·class="n">ManagerDir</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"/tmp"</span><span·class="p">,</span><span·class="w"> | 235 | be·16·if·<code·class="inline">usmDESPrivProtocol</code>·or·<code·class="inline">usmAesCfb128Protocol</code>·is·used.</p></li></ul><pre><code·class="makeup·erlang"·translate="no"><span·class="n">ManagerDir</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"/tmp"</span><span·class="p">,</span><span·class="w"> |
| 236 | </span><span·class="n">UsmConfig</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 236 | </span><span·class="n">UsmConfig</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="3528492787-1">[</span><span·class="nc">snmpm_conf</span><span·class="p">:</span><span·class="nf">usm_entry</span><span·class="p"·data-group-id="3528492787-2">(</span><span·class="s">"engine"</span><span·class="p">,</span><span·class="w"> |
| 237 | ···································</span><span·class="s">"user·1"</span><span·class="p">,</span><span·class="w"> | 237 | ···································</span><span·class="s">"user·1"</span><span·class="p">,</span><span·class="w"> |
| 238 | » ···························</span><span·class="ss">usmNoAuthProtocol</span><span·class="p">,</span><span·class="w"> | 238 | » ···························</span><span·class="ss">usmNoAuthProtocol</span><span·class="p">,</span><span·class="w"> |
| 239 | » ·» » » ···</span><span·class="p"·data-group-id=" | 239 | » ·» » » ···</span><span·class="p"·data-group-id="3528492787-3">[</span><span·class="p"·data-group-id="3528492787-3">]</span><span·class="p">,</span><span·class="w"> |
| 240 | » ·» » » ···</span><span·class="ss">usmNoPrivProtocol</span><span·class="p">,</span><span·class="w"> | 240 | » ·» » » ···</span><span·class="ss">usmNoPrivProtocol</span><span·class="p">,</span><span·class="w"> |
| 241 | » ·» » » ···</span><span·class="p"·data-group-id=" | 241 | » ·» » » ···</span><span·class="p"·data-group-id="3528492787-4">[</span><span·class="p"·data-group-id="3528492787-4">]</span><span·class="p"·data-group-id="3528492787-2">)</span><span·class="p"·data-group-id="3528492787-1">]</span><span·class="p">,</span><span·class="w"> |
| 242 | </span><span·class="nc">snmpm_conf</span><span·class="p">:</span><span·class="nf">write_usm_config</span><span·class="p"·data-group-id=" | 242 | </span><span·class="nc">snmpm_conf</span><span·class="p">:</span><span·class="nf">write_usm_config</span><span·class="p"·data-group-id="3528492787-5">(</span><span·class="n">ManagerDir</span><span·class="p">,</span><span·class="w">·</span><span·class="n">UsmConfig</span><span·class="p"·data-group-id="3528492787-5">)</span><span·class="p">,</span></code></pre> |
| 243 | </div> | 243 | </div> |
| 244 | <div·class="bottom-actions"·id="bottom-actions"> | 244 | <div·class="bottom-actions"·id="bottom-actions"> |
| 245 | ··<div·class="bottom-actions-item"> | 245 | ··<div·class="bottom-actions-item"> |
| 246 | ······<a·href="snmp_agent_config_files.html"·class="bottom-actions-button"·rel="prev"> | 246 | ······<a·href="snmp_agent_config_files.html"·class="bottom-actions-button"·rel="prev"> |
| 247 | ········<span·class="subheader"> | 247 | ········<span·class="subheader"> |
| Offset 137, 30 lines modified | Offset 137, 30 lines modified | ||
| 137 | before·it·will·be·compiled.·This·text·file·must·have·the·same·name·as·the·MIB, | 137 | before·it·will·be·compiled.·This·text·file·must·have·the·same·name·as·the·MIB, |
| 138 | but·with·the·suffix·<code·class="inline">.mib</code>.·This·is·necessary·for·handling·the·<code·class="inline">IMPORT</code> | 138 | but·with·the·suffix·<code·class="inline">.mib</code>.·This·is·necessary·for·handling·the·<code·class="inline">IMPORT</code> |
| 139 | statement.</p><p>The·association·file,·which·contains·the·names·of·instrumentation·functions·for | 139 | statement.</p><p>The·association·file,·which·contains·the·names·of·instrumentation·functions·for |
| 140 | the·MIB,·should·have·the·suffix·<code·class="inline">.funcs</code>.·If·the·compiler·does·not·find·the | 140 | the·MIB,·should·have·the·suffix·<code·class="inline">.funcs</code>.·If·the·compiler·does·not·find·the |
| 141 | association·file,·it·gives·a·warning·message·and·uses·default·instrumentation | 141 | association·file,·it·gives·a·warning·message·and·uses·default·instrumentation |
| 142 | functions.·(See·<a·href="snmp_instr_functions.html#snmp_3">Default·Instrumentation</a>·for | 142 | functions.·(See·<a·href="snmp_instr_functions.html#snmp_3">Default·Instrumentation</a>·for |
| 143 | more·details).</p><p>The·MIB·compiler·is·started·with·a·call·to·<code·class="inline">snmpc:compile(<mibname>).</code>·For | 143 | more·details).</p><p>The·MIB·compiler·is·started·with·a·call·to·<code·class="inline">snmpc:compile(<mibname>).</code>·For |
| 144 | example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">snmpc</span><span·class="p">:</span><span·class="nf">compile</span><span·class="p"·data-group-id=" | 144 | example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">snmpc</span><span·class="p">:</span><span·class="nf">compile</span><span·class="p"·data-group-id="7681313509-1">(</span><span·class="s">"RFC1213-MIB"</span><span·class="p"·data-group-id="7681313509-1">)</span><span·class="p">.</span></code></pre><p>The·output·is·a·new·file·which·is·called·<code·class="inline"><mibname>.bin</code>.</p><p>The·MIB·compiler·understands·both·SMIv1·and·SMIv2·MIBs.·It·uses·the |
| 145 | MODULE-IDENTITY·statement·to·determinate·if·the·MIB·is·written·in·SMI·version·1 | 145 | MODULE-IDENTITY·statement·to·determinate·if·the·MIB·is·written·in·SMI·version·1 |
| 146 | or·2.</p><h2·id="importing-mibs"·class="section-heading"> | 146 | or·2.</p><h2·id="importing-mibs"·class="section-heading"> |
| 147 | ··<a·href="#importing-mibs"·class="hover-link"> | 147 | ··<a·href="#importing-mibs"·class="hover-link"> |
| 148 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 148 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 149 | ··</a> | 149 | ··</a> |
| 150 | ··<span·class="text">Importing·MIBs</span> | 150 | ··<span·class="text">Importing·MIBs</span> |
| 151 | </h2> | 151 | </h2> |
| 152 | <p>The·compiler·handles·the·<code·class="inline">IMPORT</code>·statement.·It·is·important·to·import·the | 152 | <p>The·compiler·handles·the·<code·class="inline">IMPORT</code>·statement.·It·is·important·to·import·the |
| 153 | compiled·file·and·not·the·ASN.1·(source)·file.·A·MIB·must·be·recompiled·to·make | 153 | compiled·file·and·not·the·ASN.1·(source)·file.·A·MIB·must·be·recompiled·to·make |
| 154 | changes·visible·to·other·MIBs·importing·it.</p><p>The·compiled·files·of·the·imported·MIBs·must·be·present·in·the·current | 154 | changes·visible·to·other·MIBs·importing·it.</p><p>The·compiled·files·of·the·imported·MIBs·must·be·present·in·the·current |
| 155 | directory,·or·a·directory·in·the·current·path.·The·path·is·supplied·with·the | 155 | directory,·or·a·directory·in·the·current·path.·The·path·is·supplied·with·the |
| 156 | <code·class="inline">{i,·Path}</code>·option,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">snmpc</span><span·class="p">:</span><span·class="nf">compile</span><span·class="p"·data-group-id=" | 156 | <code·class="inline">{i,·Path}</code>·option,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">snmpc</span><span·class="p">:</span><span·class="nf">compile</span><span·class="p"·data-group-id="0757933355-1">(</span><span·class="s">"MY-MIB"</span><span·class="p">,</span><span·class="w"> |
| 157 | ·······</span><span·class="p"·data-group-id=" | 157 | ·······</span><span·class="p"·data-group-id="0757933355-2">[</span><span·class="p"·data-group-id="0757933355-3">{</span><span·class="ss">i</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0757933355-4">[</span><span·class="s">"friend_mibs/"</span><span·cl[·...·truncated·by·diffoscope;·len:·292,·SHA:·763d7aa55fedf7cde3bcd5fb85f9b33dc442a3867bdc958443a8f241a30b76c7·...·]-1">)</span><span·class="p">.</span></code></pre><p>It·is·also·possible·to·import·MIBs·from·OTP·applications·in·an·<code·class="inline">"include_lib"</code> |
| 158 | like·fashion·with·the·<code·class="inline">il</code>·option.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">snmpc</span><span·class="p">:</span><span·class="nf">compile</span><span·class="p"·data-group-id=" | 158 | like·fashion·with·the·<code·class="inline">il</code>·option.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">snmpc</span><span·class="p">:</span><span·class="nf">compile</span><span·class="p"·data-group-id="1342025543-1">(</span><span·class="s">"MY-MIB"</span><span·class="p">,</span><span·class="w"> |
| 159 | ·······</span><span·class="p"·data-group-id=" | 159 | ·······</span><span·class="p"·data-group-id="1342025543-2">[</span><span·class="p"·data-group-id="1342025543-3">{</span><span·class="ss">il</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1342025543-4">[</span><span·class="s">"snmp/priv/mibs/"</span><spa[·...·truncated·by·diffoscope;·len:·295,·SHA:·77b82c67696e353b122026fb6912cd6373be0d0079bf81c5c4fc68deaacf8157·...·]-1">)</span><span·class="p">.</span></code></pre><p>finds·the·latest·version·of·the·<code·class="inline">snmp</code>·and·<code·class="inline">myapp</code>·applications·in·the·OTP |
| 160 | system·and·uses·the·expanded·paths·as·include·paths.</p><p>Note·that·an·SMIv2·MIB·can·import·an·SMIv1·MIB·and·vice·versa.</p><p>The·following·MIBs·are·built-ins·of·the·Erlang·SNMP·compiler:·SNMPv2-SMI, | 160 | system·and·uses·the·expanded·paths·as·include·paths.</p><p>Note·that·an·SMIv2·MIB·can·import·an·SMIv1·MIB·and·vice·versa.</p><p>The·following·MIBs·are·built-ins·of·the·Erlang·SNMP·compiler:·SNMPv2-SMI, |
| 161 | RFC-1215,·RFC-1212,·SNMPv2-TC,·SNMPv2-CONF,·and·RFC1155-SMI.·They·cannot | 161 | RFC-1215,·RFC-1212,·SNMPv2-TC,·SNMPv2-CONF,·and·RFC1155-SMI.·They·cannot |
| 162 | therefore·be·compiled·separately.</p><h2·id="mib-consistency-checking"·class="section-heading"> | 162 | therefore·be·compiled·separately.</p><h2·id="mib-consistency-checking"·class="section-heading"> |
| 163 | ··<a·href="#mib-consistency-checking"·class="hover-link"> | 163 | ··<a·href="#mib-consistency-checking"·class="hover-link"> |
| 164 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 164 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 165 | ··</a> | 165 | ··</a> |
| 166 | ··<span·class="text">MIB·Consistency·Checking</span> | 166 | ··<span·class="text">MIB·Consistency·Checking</span> |
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| 130 | ····<section·id="moduledoc"> | 130 | ····<section·id="moduledoc"> |
| 131 | <p>Encode·and·Decode·Functions·for·SNMP·PDUs</p><p>RFC1157,·RFC1905·and/or·RFC2272·should·be·studied·carefully·before·using·this | 131 | <p>Encode·and·Decode·Functions·for·SNMP·PDUs</p><p>RFC1157,·RFC1905·and/or·RFC2272·should·be·studied·carefully·before·using·this |
| 132 | module,·<code·class="inline">snmp_pdus</code>.</p><p>The·module·<code·class="inline">snmp_pdus</code>·contains·functions·for·encoding·and·decoding·of·SNMP | 132 | module,·<code·class="inline">snmp_pdus</code>.</p><p>The·module·<code·class="inline">snmp_pdus</code>·contains·functions·for·encoding·and·decoding·of·SNMP |
| 133 | protocol·data·units·(PDUs).·In·short,·this·module·converts·a·list·of·bytes·to | 133 | protocol·data·units·(PDUs).·In·short,·this·module·converts·a·list·of·bytes·to |
| 134 | Erlang·record·representations·and·vice·versa.·The·record·definitions·can·be | 134 | Erlang·record·representations·and·vice·versa.·The·record·definitions·can·be |
| 135 | found·in·the·file·<code·class="inline">snmp/include/snmp_types.hrl</code>.·If·snmpv3·is·used,·the·module | 135 | found·in·the·file·<code·class="inline">snmp/include/snmp_types.hrl</code>.·If·snmpv3·is·used,·the·module |
| 136 | that·includes·<code·class="inline">snmp_types.hrl</code>·must·define·the·constant·<code·class="inline">SNMP_USE_V3</code>·before·the | 136 | that·includes·<code·class="inline">snmp_types.hrl</code>·must·define·the·constant·<code·class="inline">SNMP_USE_V3</code>·before·the |
| 137 | header·file·is·included.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id=" | 137 | header·file·is·included.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="5686426261-1">(</span><span·class="n">SNMP_USE_V3</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">true</span><span·class="p"·data-group-id="5686426261-1">)</span><span·class="p">.</span><span·class="w"> |
| 138 | </span><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id=" | 138 | </span><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="5686426261-2">(</span><span·class="s">"snmp/include/snmp_types.hrl"</span><span·class="p"·data-group-id="5686426261-2">)</span><span·class="p">.</span></code></pre><p>Encoding·and·decoding·must·be·done·explicitly·when·writing·your·own·Net·if |
| 139 | process.</p> | 139 | process.</p> |
| 140 | ····</section> | 140 | ····</section> |
| 141 | </div> | 141 | </div> |
| 142 | ··<section·id="summary"·class="details-list"> | 142 | ··<section·id="summary"·class="details-list"> |
| 143 | ····<h1·class="section-heading"> | 143 | ····<h1·class="section-heading"> |
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| 3215 | ······················AgentName·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:atom/0">atom</a>(), | 3215 | ······················AgentName·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:atom/0">atom</a>(), |
| 3216 | ······················Mib·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>(), | 3216 | ······················Mib·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>(), |
| 3217 | ······················Reason·::·already_loaded·|·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> | 3217 | ······················Reason·::·already_loaded·|·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 3218 | ······</div> | 3218 | ······</div> |
| 3219 | <p>Load·a·single·<code·class="inline">Mib</code>·into·an·agent.·The·<code·class="inline">MibName</code>·is·the·name·of·the·Mib, | 3219 | <p>Load·a·single·<code·class="inline">Mib</code>·into·an·agent.·The·<code·class="inline">MibName</code>·is·the·name·of·the·Mib, |
| 3220 | including·the·path·to·where·the·compiled·mib·is·found.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··········</span><span·class="n">Dir</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">code</span><span·class="p">:</span><span·class="nf">priv_dir</span><span·class="p"·data-group-id=" | 3220 | including·the·path·to·where·the·compiled·mib·is·found.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··········</span><span·class="n">Dir</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">code</span><span·class="p">:</span><span·class="nf">priv_dir</span><span·class="p"·data-group-id="9278271260-1">(</span><span·class="ss">my_app</span><span·class="p"·data-group-id="9278271260-1">)</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="s">"/mibs/"</span><span·class="p">,</span><span·class="w"> |
| 3221 | ··········</span><span·class="nc">snmpa</span><span·class="p">:</span><span·class="nf">load_mib</span><span·class="p"·data-group-id=" | 3221 | ··········</span><span·class="nc">snmpa</span><span·class="p">:</span><span·class="nf">load_mib</span><span·class="p"·data-group-id="9278271260-2">(</span><span·class="ss">snmp_master_agent</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Dir</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="s">"MY-MIB"</span><span[·...·truncated·by·diffoscope;·len:·36,·SHA:·cbc820594b726959f7409fe0d4697f8ac30de8212f56f9edb4100d566b928a36·...·]-2">)</span><span·class="p">.</span></code></pre> |
| 3222 | ··</section> | 3222 | ··</section> |
| 3223 | </section> | 3223 | </section> |
| 3224 | <section·class="detail"·id="load_mibs/1"> | 3224 | <section·class="detail"·id="load_mibs/1"> |
| 3225 | ··<div·class="detail-header"> | 3225 | ··<div·class="detail-header"> |
| 3226 | ····<a·href="#load_mibs/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 3226 | ····<a·href="#load_mibs/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 3227 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 3227 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 3326 | ·······················InternalReason·::·already_loaded·|·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> | 3326 | ·······················InternalReason·::·already_loaded·|·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 3327 | ······</div> | 3327 | ······</div> |
| 3328 | <p>Load·<code·class="inline">Mibs</code>·into·an·agent.·If·the·agent·cannot·load·all·MIBs·(the·default·value | 3328 | <p>Load·<code·class="inline">Mibs</code>·into·an·agent.·If·the·agent·cannot·load·all·MIBs·(the·default·value |
| 3329 | of·the·<code·class="inline">Force</code>·argument·is·<code·class="inline">false</code>),·it·will·indicate·where·loading·was·aborted. | 3329 | of·the·<code·class="inline">Force</code>·argument·is·<code·class="inline">false</code>),·it·will·indicate·where·loading·was·aborted. |
| 3330 | The·<code·class="inline">MibName</code>·is·the·name·of·the·Mib,·including·the·path·to·where·the·compiled | 3330 | The·<code·class="inline">MibName</code>·is·the·name·of·the·Mib,·including·the·path·to·where·the·compiled |
| 3331 | mib·is·found.·For·example,</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··········</span><span·class="n">Dir</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">code</span><span·class="p">:</span><span·class="nf">priv_dir</span><span·class="p"·data-group-id="3 | 3331 | mib·is·found.·For·example,</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··········</span><span·class="n">Dir</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">code</span><span·class="p">:</span><span·class="nf">priv_dir</span><span·class="p"·data-group-id="3796440060-1">(</span><span·class="ss">my_app</span><span·class="p"·data-group-id="3796440060-1">)</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="s">"/mibs/"</span><span·class="p">,</span><span·class="w"> |
| 3332 | ··········</span><span·class="nc">snmpa</span><span·class="p">:</span><span·class="nf">load_mibs</span><span·class="p"·data-group-id="3 | 3332 | ··········</span><span·class="nc">snmpa</span><span·class="p">:</span><span·class="nf">load_mibs</span><span·class="p"·data-group-id="3796440060-2">(</span><span·class="ss">snmp_master_agent</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3796440060-3">[</span><span·class="n">Dir</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·<[·...·truncated·by·diffoscope;·len:·141,·SHA:·4947a62b26965ef0ddd83029621ffa6fe544e3cdb425152d71d7df5db1e1c29e·...·]-2">)</span><span·class="p">.</span></code></pre><p>If·<code·class="inline">Force·=·true</code>·then·the·agent·will·continue·attempting·to·load·each·mib·even |
| 3333 | after·failing·to·load·a·previous·mib.·Use·with·care.</p> | 3333 | after·failing·to·load·a·previous·mib.·Use·with·care.</p> |
| 3334 | ··</section> | 3334 | ··</section> |
| 3335 | </section> | 3335 | </section> |
| 3336 | <section·class="detail"·id="log_to_io/1"> | 3336 | <section·class="detail"·id="log_to_io/1"> |
| 3337 | ··<div·class="detail-header"> | 3337 | ··<div·class="detail-header"> |
| 3338 | ····<a·href="#log_to_io/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 3338 | ····<a·href="#log_to_io/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
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| 4297 | ··········································Mod·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:module/0">module</a>(), | 4297 | ··········································Mod·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:module/0">module</a>(), |
| 4298 | ··········································Data·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>(), | 4298 | ··········································Data·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>(), |
| 4299 | ··········································Where·::·<a·href="#t:nfilter_position/0">nfilter_position</a>(), | 4299 | ··········································Where·::·<a·href="#t:nfilter_position/0">nfilter_position</a>(), |
| 4300 | ··········································Reason·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> | 4300 | ··········································Reason·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 4301 | ······</div> | 4301 | ······</div> |
| 4302 | <p>Accepted·type·specifications·are:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">register_notification_filter</span><span·class="p"·data-group-id="2 | 4302 | <p>Accepted·type·specifications·are:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">register_notification_filter</span><span·class="p"·data-group-id="2880462217-1">(</span><span·class="n">Agent</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Id</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Mod</span><span·class="p">,</span><span·class="w">·</span><span·class=[·...·truncated·by·diffoscope;·len:·442,·SHA:·8c56782dce4ea28d08d63c3606445a08ce3977d56c6283b71ff82bdeeb9f44d0·...·]-2">}</span><span·class="p">.</span><span·class="w"> |
| 4303 | </span><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">register_notification_filter</span><span·class="p"·data-group-id="2 | 4303 | </span><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">register_notification_filter</span><span·class="p"·data-group-id="2880462217-3">(</span><span·class="n">Id</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Mod</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p">,</span><span·class="w">·</span><span·class="[·...·truncated·by·diffoscope;·len:·442,·SHA:·2c9efac804842e81c226fad24a07ba87cd7b60b2032bf750578f8bfbb6007bf4·...·]-4">}</span><span·class="p">.</span></code></pre> |
| 4304 | ··</section> | 4304 | ··</section> |
| 4305 | </section> | 4305 | </section> |
| 4306 | <section·class="detail"·id="register_notification_filter/5"> | 4306 | <section·class="detail"·id="register_notification_filter/5"> |
| 4307 | ··<div·class="detail-header"> | 4307 | ··<div·class="detail-header"> |
| 4308 | ····<a·href="#register_notification_filter/5"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 4308 | ····<a·href="#register_notification_filter/5"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 4309 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 4309 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 4367 | ·······························SubAgent·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:pid/0">pid</a>(), | 4367 | ·······························SubAgent·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:pid/0">pid</a>(), |
| 4368 | ·······························Reason·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> | 4368 | ·······························Reason·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 4369 | ······</div> | 4369 | ······</div> |
| 4370 | <p>Registers·a·sub-agent·under·a·sub-tree·of·another·agent.</p><p>It·is·easy·to·make·mistakes·when·registering·sub-agents·and·this·activity·should | 4370 | <p>Registers·a·sub-agent·under·a·sub-tree·of·another·agent.</p><p>It·is·easy·to·make·mistakes·when·registering·sub-agents·and·this·activity·should |
| 4371 | be·done·carefully.·For·example,·a·strange·behaviour·would·result·from·the | 4371 | be·done·carefully.·For·example,·a·strange·behaviour·would·result·from·the |
| 4372 | following·configuration:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">snmp_agent</span><span·class="p">:</span><span·class="nf">register_subagent</span><span·class="p"·data-group-id="8184609956-1">(</span><span·class="n">MAPid</span><span·class="p">,</span><span·class="p"·data-group-id="8184609956-2">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">4</span><span·class="p"·data-group-id="8184609956-2">]</span><span·class="p">,</span><span·class="n">SA1</span><span·class="p"·data-group-id="8184609956-1">)</span><span·class="p">,</span><span·class="w"> | ||
| 4373 | </span><span·class="nc">snmp_agent</span><span·class="p">:</span><span·class="nf">register_subagent</span><span·class="p"·data-group-id=" | 4372 | following·configuration:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">snmp_agent</span><span·class="p">:</span><span·class="nf">register_subagent</span><span·class="p"·data-group-id="7254512629-1">(</span><span·class="n">MAPid</span>[·...·truncated·by·diffoscope;·len:·445,·SHA:·3b0fc7593262a6af97c138cef885aeed2b75c0d43104b4dc636f2df940aba2bb·...·] |
| 4373 | </span><span·class="nc">snmp_agent</span><span·class="p">:</span><span·class="nf">register_subagent</span><span·class="p"·data-group-id="7254512629-3">(</span><span·class="n">SA1</span><span·class="p">,</span><span·class="p"·data-group-id="7254512629-4">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="7254512629-4">]</span><span·class="p">,</span><span·class="w">·</span><span·class="n">SA2</span><span·class="p"·data-group-id="7254512629-3">)</span><span·class="p">.</span></code></pre><p><code·class="inline">SA2</code>·will·not·get·requests·starting·with·object·identifier·<code·class="inline">[1,2,3]</code>·since | ||
| 4374 | <code·class="inline">SA1</code>·does·not.</p> | 4374 | <code·class="inline">SA1</code>·does·not.</p> |
| 4375 | ··</section> | 4375 | ··</section> |
| 4376 | </section> | 4376 | </section> |
| 4377 | <section·class="detail"·id="restart_set_worker/0"> | 4377 | <section·class="detail"·id="restart_set_worker/0"> |
| 4378 | ··<div·class="detail-header"> | 4378 | ··<div·class="detail-header"> |
| 4379 | ····<a·href="#restart_set_worker/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 4379 | ····<a·href="#restart_set_worker/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 4793, 28 lines modified | Offset 4793, 28 lines modified | ||
| 4793 | function·call·according·to·the·value·of·<code·class="inline">Recv</code>.</li></ul><p>If·<code·class="inline">Receiver</code>·has·the·value·<code·class="inline">{Tag,·Recv}</code>,·the·delivery·is·done·according·to | 4793 | function·call·according·to·the·value·of·<code·class="inline">Recv</code>.</li></ul><p>If·<code·class="inline">Receiver</code>·has·the·value·<code·class="inline">{Tag,·Recv}</code>,·the·delivery·is·done·according·to |
| 4794 | <code·class="inline">Recv</code>:</p><ul><li><p><code·class="inline">pid()·|·atom()</code>·-·The·info·will·be·delivered·in·the·following·messages:</p><ul><li><p><code·class="inline">{snmp_targets,·Tag,·Addresses}</code></p><p>This·inform·the·user·which·target·addresses·the·notification·was·sent·to.</p></li><li><p><code·class="inline">{snmp_notification,·Tag,·{got_response,·Address}}</code></p><p>This·informs·the·user·that·this·target·address·acknowledged·the | 4794 | <code·class="inline">Recv</code>:</p><ul><li><p><code·class="inline">pid()·|·atom()</code>·-·The·info·will·be·delivered·in·the·following·messages:</p><ul><li><p><code·class="inline">{snmp_targets,·Tag,·Addresses}</code></p><p>This·inform·the·user·which·target·addresses·the·notification·was·sent·to.</p></li><li><p><code·class="inline">{snmp_notification,·Tag,·{got_response,·Address}}</code></p><p>This·informs·the·user·that·this·target·address·acknowledged·the |
| 4795 | notification.</p></li><li><p><code·class="inline">{snmp_notification,·Tag,·{no_response,·Address}}</code></p><p>This·informs·the·user·that·this·target·address·did·not·acknowledge | 4795 | notification.</p></li><li><p><code·class="inline">{snmp_notification,·Tag,·{no_response,·Address}}</code></p><p>This·informs·the·user·that·this·target·address·did·not·acknowledge |
| 4796 | notification.</p></li></ul><p>The·notification·is·sent·as·an·Inform-Request·to·each·target·address·in | 4796 | notification.</p></li></ul><p>The·notification·is·sent·as·an·Inform-Request·to·each·target·address·in |
| 4797 | <code·class="inline">Addresses</code>·and·if·there·are·no·targets·for·which·an·Inform-Request·is·sent, | 4797 | <code·class="inline">Addresses</code>·and·if·there·are·no·targets·for·which·an·Inform-Request·is·sent, |
| 4798 | <code·class="inline">Addresses</code>·is·the·empty·list·<code·class="inline">[]</code>.</p><p>The·<code·class="inline">receiver</code>·will·first·be·sent·the·<code·class="inline">snmp_targets</code>·message,·and·then·for | 4798 | <code·class="inline">Addresses</code>·is·the·empty·list·<code·class="inline">[]</code>.</p><p>The·<code·class="inline">receiver</code>·will·first·be·sent·the·<code·class="inline">snmp_targets</code>·message,·and·then·for |
| 4799 | each·address·in·<code·class="inline">Addresses</code>·list,·one·of·the·two·<code·class="inline">snmp_notification</code>·messages.</p></li><li><p><code·class="inline">{Mod,·Func,·Args}</code>·-·The·info·will·be·delivered·via·the·function·call:</p><p><code·class="inline">Mod:Func([Msg·|·Args])</code></p><p>where·<code·class="inline">Msg</code>·has·the·same·content·and·purpose·as·the·messages·descrived·above.</p></li></ul><p><code·class="inline">Address</code>·is·a·management·target·address·and·<code·class="inline">Addresses</code>·is·a·list·of·management | 4799 | each·address·in·<code·class="inline">Addresses</code>·list,·one·of·the·two·<code·class="inline">snmp_notification</code>·messages.</p></li><li><p><code·class="inline">{Mod,·Func,·Args}</code>·-·The·info·will·be·delivered·via·the·function·call:</p><p><code·class="inline">Mod:Func([Msg·|·Args])</code></p><p>where·<code·class="inline">Msg</code>·has·the·same·content·and·purpose·as·the·messages·descrived·above.</p></li></ul><p><code·class="inline">Address</code>·is·a·management·target·address·and·<code·class="inline">Addresses</code>·is·a·list·of·management |
| 4800 | target·addresses.·They·are·defined·as·followes:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">········</span><span·class="n">Addresses</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 4800 | target·addresses.·They·are·defined·as·followes:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">········</span><span·class="n">Addresses</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7075573890-1">[</span><span·class="nf">address</span><span·class="p"·data-group-id="7075573890-2">(</span><span·class="p"·data-group-id="7075573890-2">)</span><span·class="p"·data-group-id="7075573890-1">]</span><span·class="w"> |
| 4801 | ········</span><span·class="n">Address</span><span·class="w">····</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">address</span><span·class="p"·data-group-id=" | 4801 | ········</span><span·class="n">Address</span><span·class="w">····</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">address</span><span·class="p"·data-group-id="7075573890-3">(</span><span·class="p"·data-group-id="7075573890-3">)</span><span·class="w"> |
| 4802 | ········</span><span·class="nf">address</span><span·class="p"·data-group-id=" | 4802 | ········</span><span·class="nf">address</span><span·class="p"·data-group-id="7075573890-4">(</span><span·class="p"·data-group-id="7075573890-4">)</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">v1_address</span><span·class="p"·data-group-id="7075573890-5">(</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·232,·SHA:·4ae877ae48945bd8f11a7d41c1b874595e454ab36557ba7416f9a2151cc481c3·...·]-6">)</span><span·class="w"> |
| 4803 | ········</span><span·class="nf">v1_address</span><span·class="p"·data-group-id=" | 4803 | ········</span><span·class="nf">v1_address</span><span·class="p"·data-group-id="7075573890-7">(</span><span·class="p"·data-group-id="7075573890-7">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7075573890-8">{</span><span·class="n">TDomain</span><span·class="p">,</span><s[·...·truncated·by·diffoscope;·len:·94,·SHA:·f06575e5828efa87ed5d90451d9f3fc84f90e04f974151e9ad503a04a624cad8·...·]-8">}</span><span·class="w"> |
| 4804 | ········</span><span·class="nf">v3_address</span><span·class="p"·data-group-id=" | 4804 | ········</span><span·class="nf">v3_address</span><span·class="p"·data-group-id="7075573890-9">(</span><span·class="p"·data-group-id="7075573890-9">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7075573890-10">{</span><span·class="p"·data-group-id="7075573890-11">{</span><[·...·truncated·by·diffoscope;·len:·283,·SHA:·d63d40ed1fe18a0b04fbc20c0029a43f95b5c648d61a24fbde2423349e159f64·...·]-10">}</span><span·class="w"> |
| 4805 | ········</span><span·class="n">TDomain</span><span·class="w">····</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">tdoamin</span><span·class="p"·data-group-id=" | 4805 | ········</span><span·class="n">TDomain</span><span·class="w">····</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">tdoamin</span><span·class="p"·data-group-id="7075573890-12">(</span><span·class="p"·data-group-id="7075573890-12">)</span><span·class="w"> |
| 4806 | ········</span><span·class="n">TAddress</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">taddress</span><span·class="p"·data-group-id=" | 4806 | ········</span><span·class="n">TAddress</span><span·class="w">···</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">taddress</span><span·class="p"·data-group-id="7075573890-13">(</span><span·class="p"·data-group-id="7075573890-13">)</span><span·class="w"> |
| 4807 | ········</span><span·class="nf">tdomain</span><span·class="p"·data-group-id=" | 4807 | ········</span><span·class="nf">tdomain</span><span·class="p"·data-group-id="7075573890-14">(</span><span·class="p"·data-group-id="7075573890-14">)</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="n">The</span><span·class="w">·</span><span·class="ss">oid</span><span·class="w">·</span><span·class="k">of</span><span·class="w">·</span><span·class="ss">snmpUDPDomain</span><span·class="w"> |
| 4808 | ·····················</span><span·class="n">This</span><span·class="w">·</span><span·class="ss">is</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="ss">only</span><span·class="w">·</span><span·class="ss">supported</span><span·class="w">·</span><span·class="ss">transport</span><span·class="w">·</span><span·class="ss">domain</span><span·class="p">.</span><span·class="w"> | 4808 | ·····················</span><span·class="n">This</span><span·class="w">·</span><span·class="ss">is</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="ss">only</span><span·class="w">·</span><span·class="ss">supported</span><span·class="w">·</span><span·class="ss">transport</span><span·class="w">·</span><span·class="ss">domain</span><span·class="p">.</span><span·class="w"> |
| 4809 | ········</span><span·class="nf">taddress</span><span·class="p"·data-group-id=" | 4809 | ········</span><span·class="nf">taddress</span><span·class="p"·data-group-id="7075573890-15">(</span><span·class="p"·data-group-id="7075573890-15">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7075573890-16">[</span><span·class="n">A1</span><span·class="p">,</span><spa[·...·truncated·by·diffoscope;·len:·378,·SHA:·2699187b18f86d9fe19413ee9152e115dc6f7976583f63494c0cf48e76596bd1·...·]-16">]</span><span·class="w"> |
| 4810 | ·····················</span><span·class="n">The</span><span·class="w">·</span><span·class="mi">4</span><span·class="w">·</span><span·class="ss">first</span><span·class="w">·</span><span·class="ss">bytes</span><span·class="w">·</span><span·class="ss">makes</span><span·class="w">·</span><span·class="ss">up</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="n">IP</span><span·class="o">-</span><span·class="ss">address</span><span·class="w">·</span><span·class="ow">and</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="ss">last</span><span·class="w">·</span><span·class="mi">2</span><span·class="p">,</span><span·class="w"> | 4810 | ·····················</span><span·class="n">The</span><span·class="w">·</span><span·class="mi">4</span><span·class="w">·</span><span·class="ss">first</span><span·class="w">·</span><span·class="ss">bytes</span><span·class="w">·</span><span·class="ss">makes</span><span·class="w">·</span><span·class="ss">up</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="n">IP</span><span·class="o">-</span><span·class="ss">address</span><span·class="w">·</span><span·class="ow">and</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="ss">last</span><span·class="w">·</span><span·class="mi">2</span><span·class="p">,</span><span·class="w"> |
| 4811 | ·····················</span><span·class="ss">the</span><span·class="w">·</span><span·class="n">UDP</span><span·class="o">-</span><span·class="ss">port</span><span·class="w">·</span><span·class="ss">number</span><span·class="p">.</span><span·class="w"> | 4811 | ·····················</span><span·class="ss">the</span><span·class="w">·</span><span·class="n">UDP</span><span·class="o">-</span><span·class="ss">port</span><span·class="w">·</span><span·class="ss">number</span><span·class="p">.</span><span·class="w"> |
| 4812 | ········</span><span·class="n">V3MsgData</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">v3_msg_data</span><span·class="p"·data-group-id=" | 4812 | ········</span><span·class="n">V3MsgData</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">v3_msg_data</span><span·class="p"·data-group-id="7075573890-17">(</span><span·class="p"·data-group-id="7075573890-17">)</span><span·class="w"> |
| 4813 | ········</span><span·class="nf">v3_msg_data</span><span·class="p"·data-group-id=" | 4813 | ········</span><span·class="nf">v3_msg_data</span><span·class="p"·data-group-id="7075573890-18">(</span><span·class="p"·data-group-id="7075573890-18">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id="7075573890-19">(</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·16,·SHA:·e092425359f26605d2d45200dd1613f9415020b2306e75dd9701e17347924b6c·...·]-19">)</span></code></pre><p>If·<code·class="inline">Receiver</code>·is·a·<a·href="#t:notification_delivery_info/0"><code·class="inline">notification_delivery_info/0</code></a>·record,·then·the·information |
| 4814 | about·the·notification·delivery·will·be·delivered·to·the·<code·class="inline">receiver</code>·via·the | 4814 | about·the·notification·delivery·will·be·delivered·to·the·<code·class="inline">receiver</code>·via·the |
| 4815 | callback·functions·defined·by·the·<a·href="snmpa_notification_delivery_info_receiver.html"><code·class="inline">snmpa_notification_delivery_info_receiver</code></a> | 4815 | callback·functions·defined·by·the·<a·href="snmpa_notification_delivery_info_receiver.html"><code·class="inline">snmpa_notification_delivery_info_receiver</code></a> |
| 4816 | behaviour·according·to·the·content·of·the·<a·href="#t:notification_delivery_info/0"><code·class="inline">notification_delivery_info/0</code></a> | 4816 | behaviour·according·to·the·content·of·the·<a·href="#t:notification_delivery_info/0"><code·class="inline">notification_delivery_info/0</code></a> |
| 4817 | record.</p><p>The·optional·argument·<code·class="inline">Varbinds</code>·defines·values·for·the·objects·in·the | 4817 | record.</p><p>The·optional·argument·<code·class="inline">Varbinds</code>·defines·values·for·the·objects·in·the |
| 4818 | notification.·If·no·value·is·given·for·an·object,·the·<code·class="inline">Agent</code>·performs·a | 4818 | notification.·If·no·value·is·given·for·an·object,·the·<code·class="inline">Agent</code>·performs·a |
| 4819 | get-operation·to·retrieve·the·value.</p><p><code·class="inline">Varbinds</code>·is·a·list·of·<code·class="inline">Varbind</code>,·where·each·<code·class="inline">Varbind</code>·is·one·of:</p><ul><li><code·class="inline">{Variable,·Value}</code>,·where·<code·class="inline">Variable</code>·is·the·symbolic·name·of·a·scalar | 4819 | get-operation·to·retrieve·the·value.</p><p><code·class="inline">Varbinds</code>·is·a·list·of·<code·class="inline">Varbind</code>,·where·each·<code·class="inline">Varbind</code>·is·one·of:</p><ul><li><code·class="inline">{Variable,·Value}</code>,·where·<code·class="inline">Variable</code>·is·the·symbolic·name·of·a·scalar |
| 4820 | variable·referred·to·in·the·notification·specification.</li><li><code·class="inline">{Column,·RowIndex,·Value}</code>,·where·<code·class="inline">Column</code>·is·the·symbolic·name·of·a·column | 4820 | variable·referred·to·in·the·notification·specification.</li><li><code·class="inline">{Column,·RowIndex,·Value}</code>,·where·<code·class="inline">Column</code>·is·the·symbolic·name·of·a·column |
| Offset 127, 15 lines modified | Offset 127, 15 lines modified | ||
| 127 | <p>SNMP·MIB·compiler·frontend</p><h2·id="synopsis"·class="section-heading"> | 127 | <p>SNMP·MIB·compiler·frontend</p><h2·id="synopsis"·class="section-heading"> |
| 128 | ··<a·href="#synopsis"·class="hover-link"> | 128 | ··<a·href="#synopsis"·class="hover-link"> |
| 129 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 129 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 130 | ··</a> | 130 | ··</a> |
| 131 | ··<span·class="text">Synopsis</span> | 131 | ··<span·class="text">Synopsis</span> |
| 132 | </h2> | 132 | </h2> |
| 133 | <pre><code·class="makeup·erlang"·translate="no"><span·class="ss">snmpc</span><span·class="w">·</span><span·class="p"·data-group-id="5 | 133 | <pre><code·class="makeup·erlang"·translate="no"><span·class="ss">snmpc</span><span·class="w">·</span><span·class="p"·data-group-id="1500490985-1">[</span><span·class="ss">options</span><span·class="p"·data-group-id="1500490985-1">]</span><span·class="w">·</span><span·class="ss">file</span><span·class="p">.</span><span·class="ss">mib</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">file</span><span·class="p">.</span><span·class="ss">bin</span></code></pre><h2·id="description"·class="section-heading"> |
| 134 | ··<a·href="#description"·class="hover-link"> | 134 | ··<a·href="#description"·class="hover-link"> |
| 135 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 135 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 136 | ··</a> | 136 | ··</a> |
| 137 | ··<span·class="text">Description</span> | 137 | ··<span·class="text">Description</span> |
| 138 | </h2> | 138 | </h2> |
| 139 | <p>The·<code·class="inline">snmpc</code>·program·provides·a·way·to·run·the·SNMP·MIB·compiler·of·the·Erlang | 139 | <p>The·<code·class="inline">snmpc</code>·program·provides·a·way·to·run·the·SNMP·MIB·compiler·of·the·Erlang |
| 140 | system.</p><p><code·class="inline">snmpc</code>·compiles·an·SNMP·MIB·file.·See·<a·href="snmpc.html#compile/1">compile/1,2</a>·for·more | 140 | system.</p><p><code·class="inline">snmpc</code>·compiles·an·SNMP·MIB·file.·See·<a·href="snmpc.html#compile/1">compile/1,2</a>·for·more |
| Offset 1944, 16 lines modified | Offset 1944, 16 lines modified | ||
| 1944 | ······<div·class="specs"> | 1944 | ······<div·class="specs"> |
| 1945 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·load_mib(MibName)·->·ok·|·{error,·Reason}·when·MibName·::·<a·href="snmp.html#t:mib_name/0">snmp:mib_name</a>(),·Reason·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> | 1945 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·load_mib(MibName)·->·ok·|·{error,·Reason}·when·MibName·::·<a·href="snmp.html#t:mib_name/0">snmp:mib_name</a>(),·Reason·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 1946 | ······</div> | 1946 | ······</div> |
| 1947 | <p>Load·a·<code·class="inline">Mib</code>·into·the·manager.·The·<code·class="inline">MibName</code>·is·the·name·of·the·Mib,·including | 1947 | <p>Load·a·<code·class="inline">Mib</code>·into·the·manager.·The·<code·class="inline">MibName</code>·is·the·name·of·the·Mib,·including |
| 1948 | the·path·to·where·the·compiled·mib·is·found.·For·example,</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··········</span><span·class="n">Dir</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">code</span><span·class="p">:</span><span·class="nf">priv_dir</span><span·class="p"·data-group-id=" | 1948 | the·path·to·where·the·compiled·mib·is·found.·For·example,</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··········</span><span·class="n">Dir</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">code</span><span·class="p">:</span><span·class="nf">priv_dir</span><span·class="p"·data-group-id="2322829400-1">(</span><span·class="ss">my_app</span><span·class="p"·data-group-id="2322829400-1">)</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="s">"/mibs/"</span><span·class="p">,</span><span·class="w"> |
| 1949 | ··········</span><span·class="nc">snmpm</span><span·class="p">:</span><span·class="nf">load_mib</span><span·class="p"·data-group-id=" | 1949 | ··········</span><span·class="nc">snmpm</span><span·class="p">:</span><span·class="nf">load_mib</span><span·class="p"·data-group-id="2322829400-2">(</span><span·class="n">Dir</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="s">"MY-MIB"</span><span·class="p"·data-group-id="2322829400-2">)</span><span·class="p">.</span></code></pre> |
| 1950 | ··</section> | 1950 | ··</section> |
| 1951 | </section> | 1951 | </section> |
| 1952 | <section·class="detail"·id="log_to_io/1"> | 1952 | <section·class="detail"·id="log_to_io/1"> |
| 1953 | ··<div·class="detail-header"> | 1953 | ··<div·class="detail-header"> |
| 1954 | ····<a·href="#log_to_io/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1954 | ····<a·href="#log_to_io/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1955 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1955 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 3450, 16 lines modified | Offset 3450, 16 lines modified | ||
| 3450 | ······<div·class="specs"> | 3450 | ······<div·class="specs"> |
| 3451 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·unload_mib(MibName)·->·ok·|·{error,·Reason}·when·MibName·::·<a·href="snmp.html#t:mib_name/0">snmp:mib_name</a>(),·Reason·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> | 3451 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·unload_mib(MibName)·->·ok·|·{error,·Reason}·when·MibName·::·<a·href="snmp.html#t:mib_name/0">snmp:mib_name</a>(),·Reason·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 3452 | ······</div> | 3452 | ······</div> |
| 3453 | <p>Unload·a·<code·class="inline">Mib</code>·from·the·manager.·The·<code·class="inline">MibName</code>·is·the·name·of·the·Mib,·including | 3453 | <p>Unload·a·<code·class="inline">Mib</code>·from·the·manager.·The·<code·class="inline">MibName</code>·is·the·name·of·the·Mib,·including |
| 3454 | the·path·to·where·the·compiled·mib·is·found.·For·example,</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··········</span><span·class="n">Dir</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">code</span><span·class="p">:</span><span·class="nf">priv_dir</span><span·class="p"·data-group-id=" | 3454 | the·path·to·where·the·compiled·mib·is·found.·For·example,</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··········</span><span·class="n">Dir</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">code</span><span·class="p">:</span><span·class="nf">priv_dir</span><span·class="p"·data-group-id="0536714853-1">(</span><span·class="ss">my_app</span><span·class="p"·data-group-id="0536714853-1">)</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="s">"/mibs/"</span><span·class="p">,</span><span·class="w"> |
| 3455 | ··········</span><span·class="nc">snmpm</span><span·class="p">:</span><span·class="nf">unload_mib</span><span·class="p"·data-group-id=" | 3455 | ··········</span><span·class="nc">snmpm</span><span·class="p">:</span><span·class="nf">unload_mib</span><span·class="p"·data-group-id="0536714853-2">(</span><span·class="n">Dir</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="s">"MY-MIB"</span><span·class="p"·data-group-id="0536714853-2">)</span><span·class="p">.</span></code></pre> |
| 3456 | ··</section> | 3456 | ··</section> |
| 3457 | </section> | 3457 | </section> |
| 3458 | <section·class="detail"·id="unregister_agent/2"> | 3458 | <section·class="detail"·id="unregister_agent/2"> |
| 3459 | ··<div·class="detail-header"> | 3459 | ··<div·class="detail-header"> |
| 3460 | ····<a·href="#unregister_agent/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 3460 | ····<a·href="#unregister_agent/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 3461 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 3461 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 138, 31 lines modified | Offset 138, 31 lines modified | ||
| 138 | the·<a·href="configure_algos.html">Configuring·algorithms·in·SSH</a>·chapter.</p><h2·id="options-configuration"·class="section-heading"> | 138 | the·<a·href="configure_algos.html">Configuring·algorithms·in·SSH</a>·chapter.</p><h2·id="options-configuration"·class="section-heading"> |
| 139 | ··<a·href="#options-configuration"·class="hover-link"> | 139 | ··<a·href="#options-configuration"·class="hover-link"> |
| 140 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 140 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 141 | ··</a> | 141 | ··</a> |
| 142 | ··<span·class="text">Options·configuration</span> | 142 | ··<span·class="text">Options·configuration</span> |
| 143 | </h2> | 143 | </h2> |
| 144 | <p>There·are·from·OTP-23.0·two·main·ways·to·set·an·option:</p><ul><li><p>Like·before,·in·the·<code·class="inline">Options</code>·parameter·in·the·Erlang·code·in·a·call·to·for | 144 | <p>There·are·from·OTP-23.0·two·main·ways·to·set·an·option:</p><ul><li><p>Like·before,·in·the·<code·class="inline">Options</code>·parameter·in·the·Erlang·code·in·a·call·to·for |
| 145 | example·<a·href="ssh.html#daemon/3"><code·class="inline">ssh:daemon/3</code></a>·or·<a·href="ssh.html#connect/3"><code·class="inline">ssh:connect/3</code></a>·or·any·of·their·variants.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">connect</span><span·class="p"·data-group-id=" | 145 | example·<a·href="ssh.html#daemon/3"><code·class="inline">ssh:daemon/3</code></a>·or·<a·href="ssh.html#connect/3"><code·class="inline">ssh:connect/3</code></a>·or·any·of·their·variants.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">connect</span><span·class="p"·data-group-id="6891771310-1">(</span><span·class="mi">22</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6891771310-2">[</span><span·class="p"·data-group-id="6891771310-3">{</span><span·class="ss">user</span><span·class="p">,</span><s[·...·truncated·by·diffoscope;·len:·624,·SHA:·76e687049747da3d43307c024cba40e9a591df8e11bb81e630bcd149e0098eef·...·]0-1">{</span><span·class="ss">application</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ssh</span><span·class="p">,</span><span·class="w"> |
| 146 | ·</span><span·class="p"·data-group-id=" | 146 | ·</span><span·class="p"·data-group-id="6190411250-2">[</span><span·class="p"·data-group-id="6190411250-3">{</span><span·class="ss">description</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"SSH-2·for·Erlang/OTP"</span><span·class="p"·data-group-id="6190411250-3">}</span><span·class="p">,</span><span·class="w"> |
| 147 | ··</span><span·class="p"·data-group-id=" | 147 | ··</span><span·class="p"·data-group-id="6190411250-4">{</span><span·class="ss">vsn</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"4.9"</span><span·class="p"·data-group-id="6190411250-4">}</span><span·class="p">,</span><span·class="w"> |
| 148 | ··</span><span·class="p"·data-group-id=" | 148 | ··</span><span·class="p"·data-group-id="6190411250-5">{</span><span·class="ss">modules</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6190411250-6">[</span><span·class="ss">ssh</span><span·class="p">,</span><span·class="w"> |
| 149 | ········</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 149 | ········</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 150 | ·········</span><span·class="ss">ssh_xfer</span><span·class="p"·data-group-id=" | 150 | ·········</span><span·class="ss">ssh_xfer</span><span·class="p"·data-group-id="6190411250-6">]</span><span·class="p"·data-group-id="6190411250-5">}</span><span·class="p">,</span><span·class="w"> |
| 151 | ··</span><span·class="p"·data-group-id=" | 151 | ··</span><span·class="p"·data-group-id="6190411250-7">{</span><span·class="ss">registered</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6190411250-8">[</span><span·class="p"·data-group-id="6190411250-8">]</span><span·class="p"·data-group-id="6190411250-7">}</span><span·class="p">,</span><span·class="w"> |
| 152 | ··</span><span·class="p"·data-group-id=" | 152 | ··</span><span·class="p"·data-group-id="6190411250-9">{</span><span·class="ss">applications</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6190411250-10">[</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">s[·...·truncated·by·diffoscope;·len:·266,·SHA:·c72a8a778252a0172780ce86ae0170203d5fd1aecfd4041a53d46d267c76478e·...·]0-9">}</span><span·class="p">,</span><span·class="w"> |
| 153 | ··</span><span·class="p"·data-group-id=" | 153 | ··</span><span·class="p"·data-group-id="6190411250-11">{</span><span·class="ss">env</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6190411250-12">[</span><span·class="p"·data-group-id="6190411250-13">{</span><span·class="ss">user</span><span·class="p">,</spa[·...·truncated·by·diffoscope;·len:·128,·SHA:·98d3efc2df713a422d5fd18273a90e69f480c18da1cb1a9c9644c0dbac92c0e2·...·]0-13">}</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%·<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<·HERE</span><span·class="w"> |
| 154 | ··</span><span·class="p"·data-group-id=" | 154 | ··</span><span·class="p"·data-group-id="6190411250-14">{</span><span·class="ss">mod</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6190411250-15">{</span><span·class="ss">ssh_app</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·177,·SHA:·4681703fe5fd68854a1cb1cee3a727e57aa8559de14bb20ef9a061d61f6fb9cf·...·]0-14">}</span><span·class="p">,</span><span·class="w"> |
| 155 | ·······</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre></li><li><p>In·a·.config·file:</p><pre><code·class="text">erl·-config·ex1</code></pre><p>where·<code·class="inline">ex1.config</code>·contains:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 155 | ·······</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre></li><li><p>In·a·.config·file:</p><pre><code·class="text">erl·-config·ex1</code></pre><p>where·<code·class="inline">ex1.config</code>·contains:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="7080801576-1">[</span><span·class="w"> |
| 156 | </span><span·class="p"·data-group-id=" | 156 | </span><span·class="p"·data-group-id="7080801576-2">{</span><span·class="ss">ssh</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7080801576-3">[</span><span·class="p"·data-group-id="7080801576-4">{</span><span·class="ss">user</span><span·class="p">,</span><[·...·truncated·by·diffoscope;·len:·208,·SHA:·4c3164dee68683bd8028975371455afea506a82f0b035e712a7af24b9e7ee2be·...·]-2">}</span><span·class="w"> |
| 157 | </span><span·class="p"·data-group-id=" | 157 | </span><span·class="p"·data-group-id="7080801576-1">]</span><span·class="p">.</span></code></pre></li></ul><p>If·the·option·is·intended·only·for·a·server·or·for·a·client,·it·may·be·set·in |
| 158 | this·way:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 158 | this·way:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8126281767-1">[</span><span·class="w"> |
| 159 | </span><span·class="p"·data-group-id=" | 159 | </span><span·class="p"·data-group-id="8126281767-2">{</span><span·class="ss">ssh</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8126281767-3">[</span><span·class="p"·data-group-id="8126281767-4">{</span><span·class="ss">server_options</span><span·class="p"[·...·truncated·by·diffoscope;·len:·376,·SHA:·3bca2a27fc2607bf045cc6312734fb4371d9e71912fc26f31946990f9e0e885b·...·]-4">}</span><span·class="p">,</span><span·class="w"> |
| 160 | ·······</span><span·class="p"·data-group-id=" | 160 | ·······</span><span·class="p"·data-group-id="8126281767-7">{</span><span·class="ss">client_options</span><span·class="p">,</span><span·class="p"·data-group-id="8126281767-8">[</span><span·class="p"·data-group-id="8126281767-9">{</span><span·class="ss">user</span><span·class="p">,</span><span·class="w[·...·truncated·by·diffoscope;·len:·195,·SHA:·e47a8213e7fc95ed44299c14b79a984ab913ea17be9b8838a606de494f3c8aba·...·]-7">}</span><span·class="w"> |
| 161 | </span><span·class="p"·data-group-id=" | 161 | </span><span·class="p"·data-group-id="8126281767-3">]</span><span·class="p">.</span></code></pre><p>A·server·(daemon)·will·use·the·user·name·<code·class="inline">foo</code>,·and·a·client·will·use·the·name |
| 162 | <code·class="inline">bar</code>.</p></li></ul><h2·id="precedence"·class="section-heading"> | 162 | <code·class="inline">bar</code>.</p></li></ul><h2·id="precedence"·class="section-heading"> |
| 163 | ··<a·href="#precedence"·class="hover-link"> | 163 | ··<a·href="#precedence"·class="hover-link"> |
| 164 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 164 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 165 | ··</a> | 165 | ··</a> |
| 166 | ··<span·class="text">Precedence</span> | 166 | ··<span·class="text">Precedence</span> |
| 167 | </h2> | 167 | </h2> |
| 168 | <p>If·an·option·is·set·in·more·than·one·way,·what·happens?</p><p>There·is·an·ordering,·which·is:</p><ul><li>Level·0:·Hard-coded·default·values·in·the·OTP·SSH·source·code</li><li>Level·1:·<a·href="../../../../lib/kernel-10.2.3/doc/html/config.html">OTP·Configuration·Parameters</a></li><li>Level·2:·Options·in·the·<a·href="../../../../lib/kernel-10.2.3/doc/html/config.html">OTP·Configuration·Parameters</a> | 168 | <p>If·an·option·is·set·in·more·than·one·way,·what·happens?</p><p>There·is·an·ordering,·which·is:</p><ul><li>Level·0:·Hard-coded·default·values·in·the·OTP·SSH·source·code</li><li>Level·1:·<a·href="../../../../lib/kernel-10.2.3/doc/html/config.html">OTP·Configuration·Parameters</a></li><li>Level·2:·Options·in·the·<a·href="../../../../lib/kernel-10.2.3/doc/html/config.html">OTP·Configuration·Parameters</a> |
| Offset 225, 96 lines modified | Offset 225, 96 lines modified | ||
| 225 | ··························'aes192-cbc','aes128-cbc','3des-cbc']}]}, | 225 | ··························'aes192-cbc','aes128-cbc','3des-cbc']}]}, |
| 226 | ·{mac,[{client2server,['hmac-sha2-256','hmac-sha2-512', | 226 | ·{mac,[{client2server,['hmac-sha2-256','hmac-sha2-512', |
| 227 | ·······················'hmac-sha1']}, | 227 | ·······················'hmac-sha1']}, |
| 228 | ·······{server2client,['hmac-sha2-256','hmac-sha2-512', | 228 | ·······{server2client,['hmac-sha2-256','hmac-sha2-512', |
| 229 | ·······················'hmac-sha1']}]}, | 229 | ·······················'hmac-sha1']}]}, |
| 230 | ·{compression,[{client2server,[none,'zlib@openssh.com',zlib]}, | 230 | ·{compression,[{client2server,[none,'zlib@openssh.com',zlib]}, |
| 231 | ···············{server2client,[none,'zlib@openssh.com',zlib]}]}]</code></pre><p>Note·that·the·algorithms·in·the·file·<code·class="inline">ex2.config</code>·is·not·yet·applied.·They·will | 231 | ···············{server2client,[none,'zlib@openssh.com',zlib]}]}]</code></pre><p>Note·that·the·algorithms·in·the·file·<code·class="inline">ex2.config</code>·is·not·yet·applied.·They·will |
| 232 | be·when·we·start·ssh:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 232 | be·when·we·start·ssh:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="4191762578-1">(</span><span·class="p"·data-group-id="4191762578-1">)</span><span·class="p">.</span><span·class="w"> |
| 233 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 233 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 234 | 3>·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">default_algorithms</span><span·class="p"·data-group-id=" | 234 | 3>·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">default_algorithms</span><span·class="p"·data-group-id="4191762578-2">(</span><span·class="p"·data-group-id="4191762578-2">)</span><span·class="p">.</span><span·class="w"> |
| 235 | </span><span·class="p"·data-group-id=" | 235 | </span><span·class="p"·data-group-id="4191762578-3">[</span><span·class="p"·data-group-id="4191762578-4">{</span><span·class="ss">kex</span><span·class="p">,</span><span·class="p"·data-group-id="4191762578-5">[</span><span·class="ss">'ecdh-sha2-nistp384'</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·69,·SHA:·2096b69d29ec36c9523c3d51e24cae03cfc16df18aadec58f6d1a9906821c98d·...·]-4">}</span><span·class="p">,</span><span·class="w"> |
| 236 | ·</span><span·class="p"·data-group-id=" | 236 | ·</span><span·class="p"·data-group-id="4191762578-6">{</span><span·class="ss">public_key</span><span·class="p">,</span><span·class="p"·data-group-id="4191762578-7">[</span><span·class="ss">'ssh-rsa'</span><span·class="p"·data-group-id="4191762578-7">]</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·12,·SHA:·80e5b5ae7b939233668cd216c4d0d5e05607d30a2d8e70e44dedd40819ebed94·...·]-6">}</span><span·class="p">,</span><span·class="w"> |
| 237 | ·</span><span·class="p"·data-group-id=" | 237 | ·</span><span·class="p"·data-group-id="4191762578-8">{</span><span·class="ss">cipher</span><span·class="p">,</span><span·class="p"·data-group-id="4191762578-9">[</span><span·class="p"·data-group-id="4191762578-10">{</span><span·class="ss">client2server</span><span·class="p">,</span><span·class=[·...·truncated·by·diffoscope;·len:·181,·SHA:·f973a3855574fd5b93f090b7e9a372c60f2c09caa2b78922ed87426db25b4f94·...·]-10">}</span><span·class="p">,</span><span·class="w"> |
| 238 | ··········</span><span·class="p"·data-group-id=" | 238 | ··········</span><span·class="p"·data-group-id="4191762578-12">{</span><span·class="ss">server2client</span><span·class="p">,</span><span·class="p"·data-group-id="4191762578-13">[</span><span·class="ss">'aes192-ctr'</span><span·class="p"·data-group-id="4191762578-13">]</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·128,·SHA:·344494cdd17a83ee72569345bb5add98260d1bb90d33a2bb582c68478e62c247·...·]-8">}</span><span·class="p">,</span><span·class="w"> |
| 239 | ·</span><span·class="p"·data-group-id=" | 239 | ·</span><span·class="p"·data-group-id="4191762578-14">{</span><span·class="ss">mac</span><span·class="p">,</span><span·class="p"·data-group-id="4191762578-15">[</span><span·class="p"·data-group-id="4191762578-16">{</span><span·class="ss">client2server</span><span·class="p">,</span><span·class="[·...·truncated·by·diffoscope;·len:·179,·SHA:·8f1137e4df1369952a7cbb02e17d00923589e62cb3ff2f07d73a251370e225ee·...·]-16">}</span><span·class="p">,</span><span·class="w"> |
| 240 | ·······</span><span·class="p"·data-group-id=" | 240 | ·······</span><span·class="p"·data-group-id="4191762578-18">{</span><span·class="ss">server2client</span><span·class="p">,</span><span·class="p"·data-group-id="4191762578-19">[</span><span·class="ss">'hmac-sha1'</span><span·class="p"·data-group-id="4191762578-19">]</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·128,·SHA:·0e5d55de20a3cd2ce706251f5f3c3ae2a21ada335408ab5c375b17cb46cc3e48·...·]-14">}</span><span·class="p">,</span><span·class="w"> |
| 241 | ·</span><span·class="p"·data-group-id="3280561260-20">{</span><span·class="ss">compression</span><span·class="p">,</span><span·class="p"·data-group-id="3280561260-21">[</span><span·class="p"·data-group-id="3280561260-22">{</span><span·class="ss">client2server</span><span·class="p">,</span><span·class="p"·data-group-id="3280561260-23">[</span><span·class="ss">none</span><span·class="p">,</span><span·class="ss">'zlib@openssh.com'</span><span·class="p">,</span><span·class="ss">zlib</span><span·class="p"·data-group-id="3280561260-23">]</span><span·class="p"·data-group-id="3280561260-22">}</span><span·class="p">,</span><span·class="w"> | ||
| 242 | · | 241 | ·</span><span·class="p"·data-group-id="4191762578-20">{</span><span·class="ss">compression</span><span·class="p">,</span><span·class="p"·data-group-id="4191762578-21">[</span><span·class="p"·data-group-id="4191762578-22">{</span><span·class="ss">client2serv[·...·truncated·by·diffoscope;·len:·366,·SHA:·678cf177b81f0a502cf4e20e19eb65f5a118a8ed59da048b90981dd2cd807e98·...·]</span><span·class="w"> |
| 242 | ···············</span><span·class="p"·data-group-id="4191762578-24">{</span><span·class="ss">server2client</span><span·class="p">,</span><span·class="p"·data-group-id="4191762578-25">[</span><span·class="ss">none</span><span·class="p">,</span><span·class="ss">'zlib@openssh.com'</span><span·class="p">,</span><span·class="ss">zlib</span><span·class="p"·data-group-id="4191762578-25">]</span><span·class="p"·data-group-id="4191762578-24">}</span><span·class="p"·data-group-id="4191762578-21">]</span><span·class="p"·data-group-id="4191762578-20">}</span><span·class="p"·data-group-id="4191762578-3">]</span><span·class="w"> | ||
| 243 | </span><span·class="mi">4</span><span·class="o">></span></code></pre><p>We·see·that·the·algorithm·set·is·changed·to·the·one·in·the·<code·class="inline">ex2.config</code>.·Since | 243 | </span><span·class="mi">4</span><span·class="o">></span></code></pre><p>We·see·that·the·algorithm·set·is·changed·to·the·one·in·the·<code·class="inline">ex2.config</code>.·Since |
| 244 | <code·class="inline">compression</code>·is·not·specified·in·the·file,·the·hard-coded·default·is·still·used | 244 | <code·class="inline">compression</code>·is·not·specified·in·the·file,·the·hard-coded·default·is·still·used |
| 245 | for·that·entry.</p><h4>Establishing·a·connection·(ssh:connect·et·al)·or·starting·a·daemon·(ssh:daemon)</h4><p>Both·when·the·client·establishes·a·connection·with·ssh:connect·or·other | 245 | for·that·entry.</p><h4>Establishing·a·connection·(ssh:connect·et·al)·or·starting·a·daemon·(ssh:daemon)</h4><p>Both·when·the·client·establishes·a·connection·with·ssh:connect·or·other |
| 246 | functions,·or·a·daemon·is·started·with·ssh:daemon,·the·option·lists·in·the | 246 | functions,·or·a·daemon·is·started·with·ssh:daemon,·the·option·lists·in·the |
| 247 | function·calls·are·also·used.</p><p>If·a·client·is·started·(ssh:connect·et·al),·the·environment·variable | 247 | function·calls·are·also·used.</p><p>If·a·client·is·started·(ssh:connect·et·al),·the·environment·variable |
| 248 | <code·class="inline">client_options</code>·is·used.·Similarly·for·a·daemon·the·<code·class="inline">server_options</code>·variable | 248 | <code·class="inline">client_options</code>·is·used.·Similarly·for·a·daemon·the·<code·class="inline">server_options</code>·variable |
| 249 | is·handled.</p><p>If·any·<a·href="ssh.html#t:preferred_algorithms_common_option/0">preferred_algorithms</a>·is | 249 | is·handled.</p><p>If·any·<a·href="ssh.html#t:preferred_algorithms_common_option/0">preferred_algorithms</a>·is |
| 250 | present,·the·one·with·the·highest·level·is·used,·that·is,·the·<code·class="inline">Option</code>·list | 250 | present,·the·one·with·the·highest·level·is·used,·that·is,·the·<code·class="inline">Option</code>·list |
| 251 | parameter·has·the·highest·priority.·Then·the | 251 | parameter·has·the·highest·priority.·Then·the |
| 252 | <a·href="ssh.html#t:modify_algorithms_common_option/0">modify_algorithms</a>·on·all·levels·in | 252 | <a·href="ssh.html#t:modify_algorithms_common_option/0">modify_algorithms</a>·on·all·levels·in |
| 253 | order·starting·with·level·0·are·applied.</p><p>We·continue·the·example·above·by·connecting·to·a·server·and·modifying·the·<code·class="inline">kex</code> | 253 | order·starting·with·level·0·are·applied.</p><p>We·continue·the·example·above·by·connecting·to·a·server·and·modifying·the·<code·class="inline">kex</code> |
| 254 | algorithm·set.·We·remove·the·only·one·(<code·class="inline">'ecdh-sha2-nistp384'</code>)·and·add | 254 | algorithm·set.·We·remove·the·only·one·(<code·class="inline">'ecdh-sha2-nistp384'</code>)·and·add |
| 255 | <code·class="inline">'curve25519-sha256@libssh.org'</code>·by·appending·it·to·the·now·empty·list:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">4>·</span><span·class="p"·data-group-id=" | 255 | <code·class="inline">'curve25519-sha256@libssh.org'</code>·by·appending·it·to·the·now·empty·list:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">4>·</span><span·class="p"·data-group-id="0291935748-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">C</span><span·class="p"·data-group-id="0291935748-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ssh</span><span·cl[·...·truncated·by·diffoscope;·len:·88,·SHA:·2f7759d1ce25225f465f9329999d1c9b469be3ec3bf1ff3dc30fe702d5fbaf63·...·]-2">(</span><span·class="ss">loopback</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">22</span><span·class="p">,</span><span·class="w"> |
| 256 | ························</span><span·class="p"·data-group-id=" | 256 | ························</span><span·class="p"·data-group-id="0291935748-3">[</span><span·class="p"·data-group-id="0291935748-4">{</span><span·class="ss">modify_algorithms</span><span·class="p">,</span><span·class="w"> |
| 257 | ·································</span><span·class="p"·data-group-id=" | 257 | ·································</span><span·class="p"·data-group-id="0291935748-5">[</span><span·class="p"·data-group-id="0291935748-6">{</span><span·class="ss">rm</span><span·class="p">,</span><span·class="w"> |
| 258 | ·····································</span><span·class="p"·data-group-id=" | 258 | ·····································</span><span·class="p"·data-group-id="0291935748-7">[</span><span·class="w">·</span><span·class="p"·data-group-id="0291935748-8">{</span><span·class="ss">kex</span><span·class="p">,</span><span·class="p"·data-group-id="0291935748-9">[</span><span·class="ss">'ecdh-sha2-nistp384'</span><[·...·truncated·by·diffoscope;·len:·170,·SHA:·47bb65cf71ecc0da5e694f47433a9b111add551b19693d8d4d3b6b61ac089dbb·...·]-7">]</span><span·class="w"> |
| 259 | » » » » ··</span><span·class="p"·data-group-id=" | 259 | » » » » ··</span><span·class="p"·data-group-id="0291935748-6">}</span><span·class="p">,</span><span·class="w"> |
| 260 | ··································</span><span·class="p"·data-group-id=" | 260 | ··································</span><span·class="p"·data-group-id="0291935748-10">{</span><span·class="ss">append</span><span·class="p">,</span><span·class="w"> |
| 261 | » » » ·············</span><span·class="p"·data-group-id=" | 261 | » » » ·············</span><span·class="p"·data-group-id="0291935748-11">[</span><span·class="w">·</span><span·class="p"·data-group-id="0291935748-12">{</span><span·class="ss">kex</span><span·class="p">,</span><span·class="p"·data-group-id="0291935748-13">[</span><span·class="ss">'curve25519-sha256@libssh.org[·...·truncated·by·diffoscope;·len:·185,·SHA:·26145f0de683e52bfc63244da4005ebf9da28b71fb437b8b69b87cb41fb30694·...·]-11">]</span><span·class="w"> |
| 262 | » » » » ··</span><span·class="p"·data-group-id=" | 262 | » » » » ··</span><span·class="p"·data-group-id="0291935748-10">}</span><span·class="w"> |
| 263 | » » » » ·</span><span·class="p"·data-group-id=" | 263 | » » » » ·</span><span·class="p"·data-group-id="0291935748-5">]</span><span·class="w"> |
| 264 | » ·················</span><span·class="p"·data-group-id=" | 264 | » ·················</span><span·class="p"·data-group-id="0291935748-4">}</span><span·class="w"> |
| 265 | ························</span><span·class="p"·data-group-id=" | 265 | ························</span><span·class="p"·data-group-id="0291935748-3">]</span><span·class="p"·data-group-id="0291935748-2">)</span><span·class="p">.</span><span·class="w"> |
| 266 | </span><span·class="p"·data-group-id="5850335929-14">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o">></span><span·class="mf">0.118</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="5850335929-14">}</span></code></pre><p>We·check·which·algorithms·are·negotiated·by·the·client·and·the·server,·and·note | ||
| 267 | 266 | </span><span·class="p"·data-group-id="0291935748-14">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o">></span><span·class="mf">0.118</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="[·...·truncated·by·diffoscope;·len:·136,·SHA:·27b79586b733e320100c24ff289f9519f6641e92a31e8848393a898660ff7833·...·] | |
| 267 | that·the·(only)·<code·class="inline">kex</code>·algorithm·<code·class="inline">'curve25519-sha256@libssh.org'</code>·was·selected:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">5>·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">connection_info</span><span·class="p"·data-group-id="8469150907-1">(</span><span·class="n">C</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">algorithms</span><span·class="p"·data-group-id="8469150907-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 268 | </span><span·class="p"·data-group-id="8 | 268 | </span><span·class="p"·data-group-id="8469150907-2">{</span><span·class="ss">algorithms</span><span·class="p">,</span><span·class="p"·data-group-id="8469150907-3">[</span><span·class="p"·data-group-id="8469150907-4">{</span><span·class="ss">kex</span><span·class="p">,</span><span·class="ss">[·...·truncated·by·diffoscope;·len:·83,·SHA:·cc3031ed6c2e43ecaadd0b18a3ee856f48911c128febeac3da65b06bb38a1c66·...·]-4">}</span><span·class="p">,</span><span·class="w"> |
| 269 | ·············</span><span·class="p"·data-group-id="8 | 269 | ·············</span><span·class="p"·data-group-id="8469150907-5">{</span><span·class="ss">hkey</span><span·class="p">,</span><span·class="ss">'ssh-rsa'</span><span·class="p"·data-group-id="8469150907-5">}</span><span·class="p">,</span><span·class="w"> |
| 270 | ·············</span><span·class="p"·data-group-id="8 | 270 | ·············</span><span·class="p"·data-group-id="8469150907-6">{</span><span·class="ss">send_mac</span><span·class="p">,</span><span·class="ss">'hmac-sha1'</span><span·class="p"·data-group-id="8469150907-6">}</span><span·class="p">,</span><span·class="w"> |
| 271 | ·············</span><span·class="p"·data-group-id="8 | 271 | ·············</span><span·class="p"·data-group-id="8469150907-7">{</span><span·class="ss">recv_mac</span><span·class="p">,</span><span·class="ss">'hmac-sha1'</span><span·class="p"·data-group-id="8469150907-7">}</span><span·class="p">,</span><span·class="w"> |
| 272 | ·············</span><span·class="p"·data-group-id="8 | 272 | ·············</span><span·class="p"·data-group-id="8469150907-8">{</span><span·class="ss">encrypt</span><span·class="p">,</span><span·class="ss">'aes192-ctr'</span><span·class="p"·data-group-id="8469150907-8">}</span><span·class="p">,</span><span·class="w"> |
| 273 | ·············</span><span·class="p"·data-group-id="8 | 273 | ·············</span><span·class="p"·data-group-id="8469150907-9">{</span><span·class="ss">decrypt</span><span·class="p">,</span><span·class="ss">'aes192-ctr'</span><span·class="p"·data-group-id="8469150907-9">}</span><span·class="p">,</span><span·class="w"> |
| 274 | ·············</span><span·class="p"·data-group-id="8 | 274 | ·············</span><span·class="p"·data-group-id="8469150907-10">{</span><span·class="ss">compress</span><span·class="p">,</span><span·class="ss">none</span><span·class="p"·data-group-id="8469150907-10">}</span><span·class="p">,</span><span·class="w"> |
| 275 | ·············</span><span·class="p"·data-group-id="8 | 275 | ·············</span><span·class="p"·data-group-id="8469150907-11">{</span><span·class="ss">decompress</span><span·class="p">,</span><span·class="ss">none</span><span·class="p"·data-group-id="8469150907-11">}</span><span·class="p">,</span><span·class="w"> |
| 276 | ·············</span><span·class="p"·data-group-id="8 | 276 | ·············</span><span·class="p"·data-group-id="8469150907-12">{</span><span·class="ss">send_ext_info</span><span·class="p">,</span><span·class="ss">false</span><span·class="p"·data-group-id="8469150907-12">}</span><span·class="p">,</span><span·class="w"> |
| 277 | ·············</span><span·class="p"·data-group-id="8 | 277 | ·············</span><span·class="p"·data-group-id="8469150907-13">{</span><span·class="ss">recv_ext_info</span><span·class="p">,</span><span·class="ss">true</span><span·class="p"·data-group-id="8469150907-13">}</span><span·class="p"·data-group-id="8469150907-3">]</span><span·class="p"·data-group-id="8469150[·...·truncated·by·diffoscope;·len:·3,·SHA:·c8c9cad7b920b50f713830b8dc55f59fffbbad98335d9f30e0bca8fab5dfeedd·...·]-2">}</span></code></pre><h4>Example·of·modify_algorithms·handling</h4><p>We·will·now·check·if·the |
| 278 | <a·href="ssh.html#t:modify_algorithms_common_option/0">modify_algorithms</a>·on·a·lower·level | 278 | <a·href="ssh.html#t:modify_algorithms_common_option/0">modify_algorithms</a>·on·a·lower·level |
| 279 | is·applied·to·a | 279 | is·applied·to·a |
| 280 | <a·href="ssh.html#t:preferred_algorithms_common_option/0">preferred_algorithms</a>·on·a·higher | 280 | <a·href="ssh.html#t:preferred_algorithms_common_option/0">preferred_algorithms</a>·on·a·higher |
| 281 | level.·We·will·do·that·by·enabling·the·<code·class="inline">ssh-dss</code>·algorithm·that·is·supported, | 281 | level.·We·will·do·that·by·enabling·the·<code·class="inline">ssh-dss</code>·algorithm·that·is·supported, |
| 282 | but·not·in·the·default·set.</p><p>The·config·file·<code·class="inline">ex3.config</code>·has·the·contents:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 282 | but·not·in·the·default·set.</p><p>The·config·file·<code·class="inline">ex3.config</code>·has·the·contents:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="5812362448-1">[</span><span·class="w"> |
| 283 | ·</span><span·class="p"·data-group-id=" | 283 | ·</span><span·class="p"·data-group-id="5812362448-2">{</span><span·class="ss">ssh</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5812362448-3">[</span><span·class="p"·data-group-id="5812362448-4">{</span><span·class="ss">modify_algorithms</span><span·class="p">,</span><span·class="w"> |
| 284 | ·········</span><span·class="p"·data-group-id=" | 284 | ·········</span><span·class="p"·data-group-id="5812362448-5">[</span><span·class="w">·</span><span·class="p"·data-group-id="5812362448-6">{</span><span·class="ss">prepend</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5812362448-7">[</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·481,·SHA:·d48e55b8adde80daf3e7bc8ef78c42e1a9484c062aedd77f1c2f2a4fc0481b0b·...·]-5">]</span><span·class="w"> |
| 285 | ········</span><span·class="p"·data-group-id=" | 285 | ········</span><span·class="p"·data-group-id="5812362448-4">}</span><span·class="p"·data-group-id="5812362448-3">]</span><span·class="p"·data-group-id="5812362448-2">}</span><span·class="w"> |
| 286 | </span><span·class="p"·data-group-id=" | 286 | </span><span·class="p"·data-group-id="5812362448-1">]</span><span·class="p">.</span></code></pre><p>A·newly·started·erlang·shell·shows·that·no·<code·class="inline">'ssh-dss'</code>·is·present·in·the |
| 287 | <code·class="inline">public_key</code>·entry:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id=" | 287 | <code·class="inline">public_key</code>·entry:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id="8524161454-1">(</span><span·class="ss">public_key</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">default_algorithms</span><span·class="p"·data-group-id="8524161454-2">(</span><span·[·...·truncated·by·diffoscope;·len:·88,·SHA:·8a3d0c3c698d381c91c235cef8f547cf1f96e6369250dc6515a92779eb54439b·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 288 | </span><span·class="p"·data-group-id=" | 288 | </span><span·class="p"·data-group-id="8524161454-3">[</span><span·class="ss">'ecdsa-sha2-nistp384'</span><span·class="p">,</span><span·class="ss">'ecdsa-sha2-nistp521'</span><span·class="p">,</span><span·class="w"> |
| 289 | ·</span><span·class="ss">'ecdsa-sha2-nistp256'</span><span·class="p">,</span><span·class="ss">'ssh-ed25519'</span><span·class="p">,</span><span·class="ss">'ssh-ed448'</span><span·class="p">,</span><span·class="w"> | 289 | ·</span><span·class="ss">'ecdsa-sha2-nistp256'</span><span·class="p">,</span><span·class="ss">'ssh-ed25519'</span><span·class="p">,</span><span·class="ss">'ssh-ed448'</span><span·class="p">,</span><span·class="w"> |
| 290 | ·</span><span·class="ss">'rsa-sha2-256'</span><span·class="p">,</span><span·class="ss">'rsa-sha2-512'</span><span·class="p">,</span><span·class="ss">'ssh-rsa'</span><span·class="p"·data-group-id=" | 290 | ·</span><span·class="ss">'rsa-sha2-256'</span><span·class="p">,</span><span·class="ss">'rsa-sha2-512'</span><span·class="p">,</span><span·class="ss">'ssh-rsa'</span><span·class="p"·data-group-id="8524161454-3">]</span><span·class="w"> |
| 291 | </span><span·class="mi">2</span><span·class="o">></span></code></pre><p>A·call·to·<a·href="ssh.html#connect/3"><code·class="inline">ssh:connect/3</code></a>·removes·all·algorithms·but·one·of·each·type:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="7 | 291 | </span><span·class="mi">2</span><span·class="o">></span></code></pre><p>A·call·to·<a·href="ssh.html#connect/3"><code·class="inline">ssh:connect/3</code></a>·removes·all·algorithms·but·one·of·each·type:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="7709054699-1">(</span><span·class="p"·data-group-id="7709054699-1">)</span><span·class="p">.</span><span·class="w"> |
| 292 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 292 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 293 | 3>·</span><span·class="p"·data-group-id="7 | 293 | 3>·</span><span·class="p"·data-group-id="7709054699-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">C</span><span·class="p"·data-group-id="7709054699-2">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ssh</span><span·cla[·...·truncated·by·diffoscope;·len:·87,·SHA:·43b563c376d85e3bb5719a819ede8117d85d4d6c3bbe6b4e666f4021027b6206·...·]-3">(</span><span·class="ss">loopback</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">22</span><span·class="p">,</span><span·class="w"> |
| 294 | ························</span><span·class="p"·data-group-id="7 | 294 | ························</span><span·class="p"·data-group-id="7709054699-4">[</span><span·class="p"·data-group-id="7709054699-5">{</span><span·class="ss">preferred_algorithms</span><span·class="p">,</span><span·class="w"> |
| 295 | ·························</span><span·class="p"·data-group-id="7 | 295 | ·························</span><span·class="p"·data-group-id="7709054699-6">[</span><span·class="p"·data-group-id="7709054699-7">{</span><span·class="ss">public_key</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7709054699-8">[</span><span·class="ss">'ecdsa-sha2-nistp256'<[·...·truncated·by·diffoscope;·len:·100,·SHA:·8544da1c10cf30dd69828285a1d9de1bca1cf73cea2644f8c56e612513051bed·...·]-7">}</span><span·class="p">,</span><span·class="w"> |
| 296 | » » » ··</span><span·class="p"·data-group-id="7 | 296 | » » » ··</span><span·class="p"·data-group-id="7709054699-9">{</span><span·class="ss">kex</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7709054699-10">[</span><span·class="ss">'ecdh-sha2-nistp256'</span><span·class="p"·data-group-id="7709054699-10">]</span>[·...·truncated·by·diffoscope;·len:·41,·SHA:·56b9dcb19ed1bfa5fb292a8528599e2b57d801a2ca5e19ffcbacde0fed56c773·...·]-9">}</span><span·class="p">,</span><span·class="w"> |
| 297 | » » ··········</span><span·class="p"·data-group-id="7 | 297 | » » ··········</span><span·class="p"·data-group-id="7709054699-11">{</span><span·class="ss">cipher</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7709054699-12">[</span><span·class="ss">'chacha20-poly1305@openssh.com'</span><span·class="p"·data-group-id="77090546[·...·truncated·by·diffoscope;·len:·56,·SHA:·5e9f47828144f98dcbf50aa7c44533224c171ec146a2ec174e6aae367d67e9b8·...·]-11">}</span><span·class="p">,</span><span·class="w"> |
| 298 | » » » ··</span><span·class="p"·data-group-id="7 | 298 | » » » ··</span><span·class="p"·data-group-id="7709054699-13">{</span><span·class="ss">mac</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7709054699-14">[</span><span·class="ss">'hmac-sha2-256'</span><span·class="p"·data-group-id="7709054699-14">]</span><spa[·...·truncated·by·diffoscope;·len:·37,·SHA:·6227b659258899c6ffece10975032d38fdea0a97b883531a920afe8cef9df0da·...·]-13">}</span><span·class="p">,</span><span·class="w"> |
| 299 | » » » ··</span><span·class="p"·data-group-id="7 | 299 | » » » ··</span><span·class="p"·data-group-id="7709054699-15">{</span><span·class="ss">compression</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7709054699-16">[</span><span·class="ss">none</span><span·class="p"·data-group-id="7709054699-16">]</span><span·class="p"[·...·truncated·by·diffoscope;·len:·26,·SHA:·df30b4d88fba852d506f822d5e740000e133d9aaeb05065b3f7ad9eee89046bd·...·]-15">}</span><span·class="w"> |
| 300 | » » » ··</span><span·class="p"·data-group-id="7 | 300 | » » » ··</span><span·class="p"·data-group-id="7709054699-6">]</span><span·class="p"·data-group-id="7709054699-5">}</span><span·class="w"> |
| 301 | » » » ·</span><span·class="p"·data-group-id="7 | 301 | » » » ·</span><span·class="p"·data-group-id="7709054699-4">]</span><span·class="p"·data-group-id="7709054699-3">)</span><span·class="p">.</span><span·class="w"> |
| 302 | </span><span·class="p"·data-group-id="7 | 302 | </span><span·class="p"·data-group-id="7709054699-17">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.101</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="7709054699-17">}</span><span·class="gp·unselectable"> |
| 303 | 4>·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">connection_info</span><span·class="p"·data-group-id="7 | 303 | 4>·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">connection_info</span><span·class="p"·data-group-id="7709054699-18">(</span><span·class="n">C</span><span·class="p">,</span><span·class="ss">algorithms</span><span·class="p"·data-group-id="7709054699-18">)</span><span·class="p">.</span><span·class="w"> |
| 304 | </span><span·class="p"·data-group-id="7 | 304 | </span><span·class="p"·data-group-id="7709054699-19">{</span><span·class="ss">algorithms</span><span·class="p">,</span><span·class="p"·data-group-id="7709054699-20">[</span><span·class="p"·data-group-id="7709054699-21">{</span><span·class="ss">kex</span><span·class="p">,</span><span·class="ss">[·...·truncated·by·diffoscope;·len:·76,·SHA:·96b67977eb1978b3b2f857f58b06d87d3cd48e9fb9bcb6c7d32670d3c1a81b53·...·]-21">}</span><span·class="p">,</span><span·class="w"> |
| 305 | ·············</span><span·class="p"·data-group-id="7 | 305 | ·············</span><span·class="p"·data-group-id="7709054699-22">{</span><span·class="ss">hkey</span><span·class="p">,</span><span·class="ss">'ssh-dss'</span><span·class="p"·data-group-id="7709054699-22">}</span><span·class="p">,</span><span·class="w"> |
| 306 | ·············</span><span·class="p"·data-group-id="7 | 306 | ·············</span><span·class="p"·data-group-id="7709054699-23">{</span><span·class="ss">send_mac</span><span·class="p">,</span><span·class="ss">'chacha20-poly1305@openssh.com'</span><span·class="p"·data-group-id="7709054699-23">}</span><span·class="p">,</span><span·class="w"> |
| 307 | ·············</span><span·class="p"·data-group-id="7 | 307 | ·············</span><span·class="p"·data-group-id="7709054699-24">{</span><span·class="ss">recv_mac</span><span·class="p">,</span><span·class="ss">'chacha20-poly1305@openssh.com'</span><span·class="p"·data-group-id="7709054699-24">}</span><span·class="p">,</span><span·class="w"> |
| 308 | ·············</span><span·class="p"·data-group-id="7 | 308 | ·············</span><span·class="p"·data-group-id="7709054699-25">{</span><span·class="ss">encrypt</span><span·class="p">,</span><span·class="ss">'chacha20-poly1305@openssh.com'</span><span·class="p"·data-group-id="7709054699-25">}</span><span·class="p">,</span><span·class="w"> |
| 309 | ·············</span><span·class="p"·data-group-id="7 | 309 | ·············</span><span·class="p"·data-group-id="7709054699-26">{</span><span·class="ss">decrypt</span><span·class="p">,</span><span·class="ss">'chacha20-poly1305@openssh.com'</span><span·class="p"·data-group-id="7709054699-26">}</span><span·class="p">,</span><span·class="w"> |
| 310 | ·············</span><span·class="p"·data-group-id="7 | 310 | ·············</span><span·class="p"·data-group-id="7709054699-27">{</span><span·class="ss">compress</span><span·class="p">,</span><span·class="ss">none</span><span·class="p"·data-group-id="7709054699-27">}</span><span·class="p">,</span><span·class="w"> |
| 311 | ·············</span><span·class="p"·data-group-id="7 | 311 | ·············</span><span·class="p"·data-group-id="7709054699-28">{</span><span·class="ss">decompress</span><span·class="p">,</span><span·class="ss">none</span><span·class="p"·data-group-id="7709054699-28">}</span><span·class="p">,</span><span·class="w"> |
| 312 | ·············</span><span·class="p"·data-group-id="7 | 312 | ·············</span><span·class="p"·data-group-id="7709054699-29">{</span><span·class="ss">send_ext_info</span><span·class="p">,</span><span·class="ss">false</span><span·class="p"·data-group-id="7709054699-29">}</span><span·class="p">,</span><span·class="w"> |
| 313 | ·············</span><span·class="p"·data-group-id="7 | 313 | ·············</span><span·class="p"·data-group-id="7709054699-30">{</span><span·class="ss">recv_ext_info</span><span·class="p">,</span><span·class="ss">true</span><span·class="p"·data-group-id="7709054699-30">}</span><span·class="p"·data-group-id="7709054699-20">]</span><span·class="p"·data-group-id="770905[·...·truncated·by·diffoscope;·len:·4,·SHA:·56f4652c9b6e2f8dfbea273777373fcf2aa2cd9ba89ef86f13ccbba1ef4a3345·...·]-19">}</span><span·class="w"> |
| 314 | </span><span·class="mi">5</span><span·class="o">></span></code></pre><p>But·<code·class="inline">'ssh-dss'</code>·is·selected·although·the·call·inserted·<em>only</em> | 314 | </span><span·class="mi">5</span><span·class="o">></span></code></pre><p>But·<code·class="inline">'ssh-dss'</code>·is·selected·although·the·call·inserted·<em>only</em> |
| 315 | <code·class="inline">'ecdsa-sha2-nistp256'</code>·as·acceptable.</p><p>This·example·showed·that·we·could·augment·the·set·of·algorithms·with·a | 315 | <code·class="inline">'ecdsa-sha2-nistp256'</code>·as·acceptable.</p><p>This·example·showed·that·we·could·augment·the·set·of·algorithms·with·a |
| 316 | config-file·without·the·need·to·change·the·actual·call.</p><p>For·demonstration·purposes·we·used·<code·class="inline">prepend</code>·instead·of·<code·class="inline">append</code>.·This·forces | 316 | config-file·without·the·need·to·change·the·actual·call.</p><p>For·demonstration·purposes·we·used·<code·class="inline">prepend</code>·instead·of·<code·class="inline">append</code>.·This·forces |
| 317 | the·negotiation·to·select·<code·class="inline">ssh-dss</code>·since·the·the·full·list·of·public·key | 317 | the·negotiation·to·select·<code·class="inline">ssh-dss</code>·since·the·the·full·list·of·public·key |
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| 166 | ··</a> | 166 | ··</a> |
| 167 | ··<span·class="text">The·SSH·app's·mechanism</span> | 167 | ··<span·class="text">The·SSH·app's·mechanism</span> |
| 168 | </h3> | 168 | </h3> |
| 169 | <p>The·set·of·algorithms·that·the·SSH·app·uses·by·default·depends·on·the·algorithms | 169 | <p>The·set·of·algorithms·that·the·SSH·app·uses·by·default·depends·on·the·algorithms |
| 170 | supported·by·the:</p><ul><li><a·href="../../../../lib/crypto-5.5.3/doc/html/crypto.html"><code·class="inline">crypto</code></a>·app,</li><li>The·cryptolib·OTP·is·linked·with,·usually·the·one·the·OS·uses,·probably | 170 | supported·by·the:</p><ul><li><a·href="../../../../lib/crypto-5.5.3/doc/html/crypto.html"><code·class="inline">crypto</code></a>·app,</li><li>The·cryptolib·OTP·is·linked·with,·usually·the·one·the·OS·uses,·probably |
| 171 | OpenSSL,</li><li>and·finally·what·the·SSH·app·implements</li></ul><p>Due·to·this,·it·impossible·to·list·in·documentation·what·algorithms·that·are | 171 | OpenSSL,</li><li>and·finally·what·the·SSH·app·implements</li></ul><p>Due·to·this,·it·impossible·to·list·in·documentation·what·algorithms·that·are |
| 172 | available·in·a·certain·installation.</p><p>There·is·an·important·command·to·list·the·actual·algorithms·and·their·ordering: | 172 | available·in·a·certain·installation.</p><p>There·is·an·important·command·to·list·the·actual·algorithms·and·their·ordering: |
| 173 | <a·href="ssh.html#default_algorithms/0"><code·class="inline">ssh:default_algorithms/0</code></a>.</p><pre·id="example_default_algorithms"><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">0>·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">default_algorithms</span><span·class="p"·data-group-id=" | 173 | <a·href="ssh.html#default_algorithms/0"><code·class="inline">ssh:default_algorithms/0</code></a>.</p><pre·id="example_default_algorithms"><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">0>·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">default_algorithms</span><span·class="p"·data-group-id="0553693009-1">(</span><span·class="p"·data-group-id="0553693009-1">)</span><span·class="p">.</span><span·class="w"> |
| 174 | </span><span·class="p"·data-group-id=" | 174 | </span><span·class="p"·data-group-id="0553693009-2">[</span><span·class="p"·data-group-id="0553693009-3">{</span><span·class="ss">kex</span><span·class="p">,</span><span·class="p"·data-group-id="0553693009-4">[</span><span·class="ss">'ecdh-sha2-nistp384'</span><span·class="p">,</span><span·class="ss">'ecdh-sha2-nistp521'</span><span·class="p">,</span><span·class="w"> |
| 175 | ·······</span><span·class="ss">'ecdh-sha2-nistp256'</span><span·class="p">,</span><span·class="ss">'diffie-hellman-group-exchange-sha256'</span><span·class="p">,</span><span·class="w"> | 175 | ·······</span><span·class="ss">'ecdh-sha2-nistp256'</span><span·class="p">,</span><span·class="ss">'diffie-hellman-group-exchange-sha256'</span><span·class="p">,</span><span·class="w"> |
| 176 | ·······</span><span·class="ss">'diffie-hellman-group16-sha512'</span><span·class="p">,</span><span·class="w"> | 176 | ·······</span><span·class="ss">'diffie-hellman-group16-sha512'</span><span·class="p">,</span><span·class="w"> |
| 177 | ·······</span><span·class="ss">'diffie-hellman-group18-sha512'</span><span·class="p">,</span><span·class="w"> | 177 | ·······</span><span·class="ss">'diffie-hellman-group18-sha512'</span><span·class="p">,</span><span·class="w"> |
| 178 | ·······</span><span·class="ss">'diffie-hellman-group14-sha256'</span><span·class="p">,</span><span·class="w"> | 178 | ·······</span><span·class="ss">'diffie-hellman-group14-sha256'</span><span·class="p">,</span><span·class="w"> |
| 179 | ·······</span><span·class="ss">'diffie-hellman-group14-sha1'</span><span·class="p">,</span><span·class="w"> | 179 | ·······</span><span·class="ss">'diffie-hellman-group14-sha1'</span><span·class="p">,</span><span·class="w"> |
| 180 | ·······</span><span·class="ss">'diffie-hellman-group-exchange-sha1'</span><span·class="p"·data-group-id=" | 180 | ·······</span><span·class="ss">'diffie-hellman-group-exchange-sha1'</span><span·class="p"·data-group-id="0553693009-4">]</span><span·class="p"·data-group-id="0553693009-3">}</span><span·class="p">,</span><span·class="w"> |
| 181 | ·</span><span·class="p"·data-group-id=" | 181 | ·</span><span·class="p"·data-group-id="0553693009-5">{</span><span·class="ss">public_key</span><span·class="p">,</span><span·class="p"·data-group-id="0553693009-6">[</span><span·class="ss">'ecdsa-sha2-nistp384'</span><span·class="p">,</span><span·class="ss">'ecdsa-sha2-nistp521'</span><span·class="p">,</span><span·class="w"> |
| 182 | ··············</span><span·class="ss">'ecdsa-sha2-nistp256'</span><span·class="p">,</span><span·class="ss">'ssh-rsa'</span><span·class="p">,</span><span·class="ss">'rsa-sha2-256'</span><span·class="p">,</span><span·class="w"> | 182 | ··············</span><span·class="ss">'ecdsa-sha2-nistp256'</span><span·class="p">,</span><span·class="ss">'ssh-rsa'</span><span·class="p">,</span><span·class="ss">'rsa-sha2-256'</span><span·class="p">,</span><span·class="w"> |
| 183 | ··············</span><span·class="ss">'rsa-sha2-512'</span><span·class="p">,</span><span·class="ss">'ssh-dss'</span><span·class="p"·data-group-id=" | 183 | ··············</span><span·class="ss">'rsa-sha2-512'</span><span·class="p">,</span><span·class="ss">'ssh-dss'</span><span·class="p"·data-group-id="0553693009-6">]</span><span·class="p"·data-group-id="0553693009-5">}</span><span·class="p">,</span><span·class="w"> |
| 184 | ·</span><span·class="p"·data-group-id=" | 184 | ·</span><span·class="p"·data-group-id="0553693009-7">{</span><span·class="ss">cipher</span><span·class="p">,</span><span·class="p"·data-group-id="0553693009-8">[</span><span·class="p"·data-group-id="0553693009-9">{</span><span·class="ss">client2server</span><span·class="p">,</span><span·class="[·...·truncated·by·diffoscope;·len:·28,·SHA:·cb5a5cead4797de7712b46a60d31387e4270b13decb4b148f7e6d2689b313bd5·...·]-10">[</span><span·class="ss">'aes256-gcm@openssh.com'</span><span·class="p">,</span><span·class="w"> |
| 185 | ··························</span><span·class="ss">'aes256-ctr'</span><span·class="p">,</span><span·class="ss">'aes192-ctr'</span><span·class="p">,</span><span·class="ss">'aes128-gcm@openssh.com'</span><span·class="p">,</span><span·class="w"> | 185 | ··························</span><span·class="ss">'aes256-ctr'</span><span·class="p">,</span><span·class="ss">'aes192-ctr'</span><span·class="p">,</span><span·class="ss">'aes128-gcm@openssh.com'</span><span·class="p">,</span><span·class="w"> |
| 186 | ··························</span><span·class="ss">'aes128-ctr'</span><span·class="p">,</span><span·class="ss">'aes128-cbc'</span><span·class="p">,</span><span·class="ss">'3des-cbc'</span><span·class="p"·data-group-id=" | 186 | ··························</span><span·class="ss">'aes128-ctr'</span><span·class="p">,</span><span·class="ss">'aes128-cbc'</span><span·class="p">,</span><span·class="ss">'3des-cbc'</span><span·class="p"·data-group-id="0553693009-10">]</span><span·class="p"·data-group-id="0553693009-9">}</span><span·class="p">,</span><span·class="w"> |
| 187 | ··········</span><span·class="p"·data-group-id=" | 187 | ··········</span><span·class="p"·data-group-id="0553693009-11">{</span><span·class="ss">server2client</span><span·class="p">,</span><span·class="p"·data-group-id="0553693009-12">[</span><span·class="ss">'aes256-gcm@openssh.com'</span><span·class="p">,</span><span·class="ss">'aes256-ctr'</span><span·class="p">,</span><span·class="w"> |
| 188 | ··························</span><span·class="ss">'aes192-ctr'</span><span·class="p">,</span><span·class="ss">'aes128-gcm@openssh.com'</span><span·class="p">,</span><span·class="ss">'aes128-ctr'</span><span·class="p">,</span><span·class="w"> | 188 | ··························</span><span·class="ss">'aes192-ctr'</span><span·class="p">,</span><span·class="ss">'aes128-gcm@openssh.com'</span><span·class="p">,</span><span·class="ss">'aes128-ctr'</span><span·class="p">,</span><span·class="w"> |
| 189 | ··························</span><span·class="ss">'aes128-cbc'</span><span·class="p">,</span><span·class="ss">'3des-cbc'</span><span·class="p"·data-group-id=" | 189 | ··························</span><span·class="ss">'aes128-cbc'</span><span·class="p">,</span><span·class="ss">'3des-cbc'</span><span·class="p"·data-group-id="0553693009-12">]</span><span·class="p"·data-group-id="0553693009-11">}</span><span·class="p"·data-group-id="0553693009-8">]</span><span·class="p"·data-group-id="0553693009-7">}</span><span·class="p">,</span><span·class="w"> |
| 190 | ·</span><span·class="p"·data-group-id=" | 190 | ·</span><span·class="p"·data-group-id="0553693009-13">{</span><span·class="ss">mac</span><span·class="p">,</span><span·class="p"·data-group-id="0553693009-14">[</span><span·class="p"·data-group-id="0553693009-15">{</span><span·class="ss">client2server</span><span·class="p">,</span><span·class="[·...·truncated·by·diffoscope;·len:·28,·SHA:·cb5a5cead4797de7712b46a60d31387e4270b13decb4b148f7e6d2689b313bd5·...·]-16">[</span><span·class="ss">'hmac-sha2-256'</span><span·class="p">,</span><span·class="ss">'hmac-sha2-512'</span><span·class="p">,</span><span·class="w"> |
| 191 | ·······················</span><span·class="ss">'hmac-sha1'</span><span·class="p"·data-group-id=" | 191 | ·······················</span><span·class="ss">'hmac-sha1'</span><span·class="p"·data-group-id="0553693009-16">]</span><span·class="p"·data-group-id="0553693009-15">}</span><span·class="p">,</span><span·class="w"> |
| 192 | ·······</span><span·class="p"·data-group-id=" | 192 | ·······</span><span·class="p"·data-group-id="0553693009-17">{</span><span·class="ss">server2client</span><span·class="p">,</span><span·class="p"·data-group-id="0553693009-18">[</span><span·class="ss">'hmac-sha2-256'</span><span·class="p">,</span><span·class="ss">'hmac-sha2-512'</span><span·class="p">,</span><span·class="w"> |
| 193 | ·······················</span><span·class="ss">'hmac-sha1'</span><span·class="p"·data-group-id=" | 193 | ·······················</span><span·class="ss">'hmac-sha1'</span><span·class="p"·data-group-id="0553693009-18">]</span><span·class="p"·data-group-id="0553693009-17">}</span><span·class="p"·data-group-id="0553693009-14">]</span><span·class="p"·data-group-id="0553693009-13">}</span><span·class="p">,</span><span·class="w"> |
| 194 | ·</span><span·class="p"·data-group-id=" | 194 | ·</span><span·class="p"·data-group-id="0553693009-19">{</span><span·class="ss">compression</span><span·class="p">,</span><span·class="p"·data-group-id="0553693009-20">[</span><span·class="p"·data-group-id="0553693009-21">{</span><span·class="ss">client2server</span><span·class="p">,</span><span[·...·truncated·by·diffoscope;·len:·298,·SHA:·a11de32752b6e4a2eb5d92815313efeb79e31f7947e2f6a10fb04b36c235a80e·...·]-21">}</span><span·class="p">,</span><span·class="w"> |
| 195 | ···············</span><span·class="p"·data-group-id=" | 195 | ···············</span><span·class="p"·data-group-id="0553693009-23">{</span><span·class="ss">server2client</span><span·class="p">,</span><span·class="p"·data-group-id="0553693009-24">[</span><span·class="ss">none</span><span·class="p">,</span><span·class="ss">'zlib@openssh.com'</span><span·class="p">[·...·truncated·by·diffoscope;·len:·293,·SHA:·7478d435280ca7246337908b5035363f0846a76665a3016e6f9d08736e02a81d·...·]-2">]</span></code></pre><p>To·change·the·algorithm·list,·there·are·two·options·which·can·be·used·in |
| 196 | <a·href="ssh.html#connect/3">ssh:connect/2,3,4</a>·and·<a·href="ssh.html#daemon/2">ssh:daemon/2,3</a>.·The | 196 | <a·href="ssh.html#connect/3">ssh:connect/2,3,4</a>·and·<a·href="ssh.html#daemon/2">ssh:daemon/2,3</a>.·The |
| 197 | options·could·of·course·be·used·in·all·other·functions·that·initiates | 197 | options·could·of·course·be·used·in·all·other·functions·that·initiates |
| 198 | connections.</p><p>The·options·are | 198 | connections.</p><p>The·options·are |
| 199 | <a·href="ssh.html#t:preferred_algorithms_common_option/0">preferred_algorithms</a>·and | 199 | <a·href="ssh.html#t:preferred_algorithms_common_option/0">preferred_algorithms</a>·and |
| 200 | <a·href="ssh.html#t:modify_algorithms_common_option/0">modify_algorithms</a>.·The·first·one | 200 | <a·href="ssh.html#t:modify_algorithms_common_option/0">modify_algorithms</a>.·The·first·one |
| 201 | replaces·the·default·set,·while·the·latter·modifies·the·default·set.</p><h2·id="replacing-the-default-set-preferred_algorithms"·class="section-heading"> | 201 | replaces·the·default·set,·while·the·latter·modifies·the·default·set.</p><h2·id="replacing-the-default-set-preferred_algorithms"·class="section-heading"> |
| 202 | ··<a·href="#replacing-the-default-set-preferred_algorithms"·class="hover-link"> | 202 | ··<a·href="#replacing-the-default-set-preferred_algorithms"·class="hover-link"> |
| Offset 211, 264 lines modified | Offset 211, 264 lines modified | ||
| 211 | friends·does.</p><h3·id="example-1"·class="section-heading"> | 211 | friends·does.</p><h3·id="example-1"·class="section-heading"> |
| 212 | ··<a·href="#example-1"·class="hover-link"> | 212 | ··<a·href="#example-1"·class="hover-link"> |
| 213 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 213 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 214 | ··</a> | 214 | ··</a> |
| 215 | ··<span·class="text">Example·1</span> | 215 | ··<span·class="text">Example·1</span> |
| 216 | </h3> | 216 | </h3> |
| 217 | <p>Replace·the·kex·algorithms·list·with·the·single·algorithm | 217 | <p>Replace·the·kex·algorithms·list·with·the·single·algorithm |
| 218 | <code·class="inline">'diffie-hellman-group14-sha256'</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">chk_algos_opts</span><span·class="p"·data-group-id=" | 218 | <code·class="inline">'diffie-hellman-group14-sha256'</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">chk_algos_opts</span><span·class="p"·data-group-id="4287517942-1">(</span><span·class="w"> |
| 219 | ···············</span><span·class="p"·data-group-id=" | 219 | ···············</span><span·class="p"·data-group-id="4287517942-2">[</span><span·class="p"·data-group-id="4287517942-3">{</span><span·class="ss">preferred_algorithms</span><span·class="p">,</span><span·class="w"> |
| 220 | ·····················</span><span·class="p"·data-group-id=" | 220 | ·····················</span><span·class="p"·data-group-id="4287517942-4">[</span><span·class="p"·data-group-id="4287517942-5">{</span><span·class="ss">kex</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4287517942-6">[</span><span·class="ss">'diffie-hellman-group14-sha256&#[·...·truncated·by·diffoscope;·len:·104,·SHA:·fd6f6a771ebe362e1067607b6425305b9a9f551ddb23860e010a6e3c19f3fada·...·]-5">}</span><span·class="w"> |
| 221 | ·····················</span><span·class="p"·data-group-id=" | 221 | ·····················</span><span·class="p"·data-group-id="4287517942-4">]</span><span·class="w"> |
| 222 | ················</span><span·class="p"·data-group-id=" | 222 | ················</span><span·class="p"·data-group-id="4287517942-3">}</span><span·class="w"> |
| 223 | ··············</span><span·class="p"·data-group-id=" | 223 | ··············</span><span·class="p"·data-group-id="4287517942-2">]</span><span·class="p"·data-group-id="4287517942-1">)</span><span·class="p">.</span><span·class="w"> |
| 224 | </span><span·class="p"·data-group-id=" | 224 | </span><span·class="p"·data-group-id="4287517942-7">[</span><span·class="p"·data-group-id="4287517942-8">{</span><span·class="ss">kex</span><span·class="p">,</span><span·class="p"·data-group-id="4287517942-9">[</span><span·class="ss">'diffie-hellman-group14-sha256'</span><span·class="p[·...·truncated·by·diffoscope;·len:·80,·SHA:·5927737c812d2507e93bc10d54235f1555d6ffcef06871ff109594f31afb28c9·...·]-8">}</span><span·class="p">,</span><span·class="w"> |
| 225 | ·</span><span·class="p"·data-group-id=" | 225 | ·</span><span·class="p"·data-group-id="4287517942-10">{</span><span·class="ss">public_key</span><span·class="p">,</span><span·class="p"·data-group-id="4287517942-11">[</span><span·class="ss">'ecdsa-sha2-nistp384'</span><span·class="p">,</span><span·class="ss">'ecdsa-sha2-nistp521'</span><span·class="p">,</span><span·class="w"> |
| 226 | ··············</span><span·class="ss">'ecdsa-sha2-nistp256'</span><span·class="p">,</span><span·class="ss">'ssh-rsa'</span><span·class="p">,</span><span·class="ss">'rsa-sha2-256'</span><span·class="p">,</span><span·class="w"> | 226 | ··············</span><span·class="ss">'ecdsa-sha2-nistp256'</span><span·class="p">,</span><span·class="ss">'ssh-rsa'</span><span·class="p">,</span><span·class="ss">'rsa-sha2-256'</span><span·class="p">,</span><span·class="w"> |
| 227 | ··············</span><span·class="ss">'rsa-sha2-512'</span><span·class="p">,</span><span·class="ss">'ssh-dss'</span><span·class="p"·data-group-id=" | 227 | ··············</span><span·class="ss">'rsa-sha2-512'</span><span·class="p">,</span><span·class="ss">'ssh-dss'</span><span·class="p"·data-group-id="4287517942-11">]</span><span·class="p"·data-group-id="4287517942-10">}</span><span·class="p">,</span><span·class="w"> |
| 228 | ·</span><span·class="p"·data-group-id=" | 228 | ·</span><span·class="p"·data-group-id="4287517942-12">{</span><span·class="ss">cipher</span><span·class="p">,</span><span·class="p"·data-group-id="4287517942-13">[</span><span·class="p"·data-group-id="4287517942-14">{</span><span·class="ss">client2server</span><span·class="p">,</span><span·clas[·...·truncated·by·diffoscope;·len:·31,·SHA:·6188f689810cf06e61d4e6533c95a9353f1e1bc6c634de664e4acc92c01052e3·...·]-15">[</span><span·class="ss">'aes256-gcm@openssh.com'</span><span·class="p">,</span><span·class="w"> |
| 229 | ··························</span><span·class="ss">'aes256-ctr'</span><span·class="p">,</span><span·class="ss">'aes192-ctr'</span><span·class="p">,</span><span·class="ss">'aes128-gcm@openssh.com'</span><span·class="p">,</span><span·class="w"> | 229 | ··························</span><span·class="ss">'aes256-ctr'</span><span·class="p">,</span><span·class="ss">'aes192-ctr'</span><span·class="p">,</span><span·class="ss">'aes128-gcm@openssh.com'</span><span·class="p">,</span><span·class="w"> |
| 230 | ··························</span><span·class="ss">'aes128-ctr'</span><span·class="p">,</span><span·class="ss">'aes128-cbc'</span><span·class="p">,</span><span·class="ss">'3des-cbc'</span><span·class="p"·data-group-id=" | 230 | ··························</span><span·class="ss">'aes128-ctr'</span><span·class="p">,</span><span·class="ss">'aes128-cbc'</span><span·class="p">,</span><span·class="ss">'3des-cbc'</span><span·class="p"·data-group-id="4287517942-15">]</span><span·class="p"·data-group-id="4287517942-14">}</span><span·class="p">,</span><span·class="w"> |
| 231 | ··········</span><span·class="p"·data-group-id=" | 231 | ··········</span><span·class="p"·data-group-id="4287517942-16">{</span><span·class="ss">server2client</span><span·class="p">,</span><span·class="p"·data-group-id="4287517942-17">[</span><span·class="ss">'aes256-gcm@openssh.com'</span><span·class="p">,</span><span·class="ss">'aes256-ctr'</span><span·class="p">,</span><span·class="w"> |
| 232 | ··························</span><span·class="ss">'aes192-ctr'</span><span·class="p">,</span><span·class="ss">'aes128-gcm@openssh.com'</span><span·class="p">,</span><span·class="ss">'aes128-ctr'</span><span·class="p">,</span><span·class="w"> | 232 | ··························</span><span·class="ss">'aes192-ctr'</span><span·class="p">,</span><span·class="ss">'aes128-gcm@openssh.com'</span><span·class="p">,</span><span·class="ss">'aes128-ctr'</span><span·class="p">,</span><span·class="w"> |
| 233 | ··························</span><span·class="ss">'aes128-cbc'</span><span·class="p">,</span><span·class="ss">'3des-cbc'</span><span·class="p"·data-group-id=" | 233 | ··························</span><span·class="ss">'aes128-cbc'</span><span·class="p">,</span><span·class="ss">'3des-cbc'</span><span·class="p"·data-group-id="4287517942-17">]</span><span·class="p"·data-group-id="4287517942-16">}</span><span·class="p"·data-group-id="4287517942-13">]</span><span·class="p"·data-group-id="4287517942-12">}</span><span·class="p">,</span><span·class="w"> |
| 234 | ·</span><span·class="p"·data-group-id=" | 234 | ·</span><span·class="p"·data-group-id="4287517942-18">{</span><span·class="ss">mac</span><span·class="p">,</span><span·class="p"·data-group-id="4287517942-19">[</span><span·class="p"·data-group-id="4287517942-20">{</span><span·class="ss">client2server</span><span·class="p">,</span><span·class="[·...·truncated·by·diffoscope;·len:·28,·SHA:·57e16f862942727a6fc6d547e86913c61927deb0fcd374a24aad6bfb2dbbb914·...·]-21">[</span><span·class="ss">'hmac-sha2-256'</span><span·class="p">,</span><span·class="ss">'hmac-sha2-512'</span><span·class="p">,</span><span·class="w"> |
| 235 | ·······················</span><span·class="ss">'hmac-sha1'</span><span·class="p"·data-group-id=" | 235 | ·······················</span><span·class="ss">'hmac-sha1'</span><span·class="p"·data-group-id="4287517942-21">]</span><span·class="p"·data-group-id="4287517942-20">}</span><span·class="p">,</span><span·class="w"> |
| 236 | ·······</span><span·class="p"·data-group-id=" | 236 | ·······</span><span·class="p"·data-group-id="4287517942-22">{</span><span·class="ss">server2client</span><span·class="p">,</span><span·class="p"·data-group-id="4287517942-23">[</span><span·class="ss">'hmac-sha2-256'</span><span·class="p">,</span><span·class="ss">'hmac-sha2-512'</span><span·class="p">,</span><span·class="w"> |
| 237 | ·······················</span><span·class="ss">'hmac-sha1'</span><span·class="p"·data-group-id=" | 237 | ·······················</span><span·class="ss">'hmac-sha1'</span><span·class="p"·data-group-id="4287517942-23">]</span><span·class="p"·data-group-id="4287517942-22">}</span><span·class="p"·data-group-id="4287517942-19">]</span><span·class="p"·data-group-id="4287517942-18">}</span><span·class="p">,</span><span·class="w"> |
| 238 | ·</span><span·class="p"·data-group-id=" | 238 | ·</span><span·class="p"·data-group-id="4287517942-24">{</span><span·class="ss">compression</span><span·class="p">,</span><span·class="p"·data-group-id="4287517942-25">[</span><span·class="p"·data-group-id="4287517942-26">{</span><span·class="ss">client2server</span><span·class="p">,</span><span[·...·truncated·by·diffoscope;·len:·298,·SHA:·daa25df3c7cf7343809498eb93db9ebc0834dbe60cf5775c505b2370bb6672f3·...·]-26">}</span><span·class="p">,</span><span·class="w"> |
| 239 | ···············</span><span·class="p"·data-group-id=" | 239 | ···············</span><span·class="p"·data-group-id="4287517942-28">{</span><span·class="ss">server2client</span><span·class="p">,</span><span·class="p"·data-group-id="4287517942-29">[</span><span·class="ss">none</span><span·class="p">,</span><span·class="ss">'zlib@openssh.com'</span><span·class="p">[·...·truncated·by·diffoscope;·len:·293,·SHA:·67c7a8b5f57f283eb8e4a887b7f1f9ee1ec7ac189dd32e598d8ef89d38c77dec·...·]-7">]</span></code></pre><p>Note·that·the·unmentioned·lists·(<code·class="inline">public_key</code>,·<code·class="inline">cipher</code>,·<code·class="inline">mac</code>·and |
| 240 | <code·class="inline">compression</code>)·are·unchanged.</p><h3·id="example-2"·class="section-heading"> | 240 | <code·class="inline">compression</code>)·are·unchanged.</p><h3·id="example-2"·class="section-heading"> |
| 241 | ··<a·href="#example-2"·class="hover-link"> | 241 | ··<a·href="#example-2"·class="hover-link"> |
| 242 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 242 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 243 | ··</a> | 243 | ··</a> |
| 244 | ··<span·class="text">Example·2</span> | 244 | ··<span·class="text">Example·2</span> |
| 245 | </h3> | 245 | </h3> |
| 246 | <p>In·the·lists·that·are·divided·in·two·for·the·two·directions·(for·example·<code·class="inline">cipher</code>)·it·is | 246 | <p>In·the·lists·that·are·divided·in·two·for·the·two·directions·(for·example·<code·class="inline">cipher</code>)·it·is |
| 247 | possible·to·change·both·directions·at·once:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">chk_algos_opts</span><span·class="p"·data-group-id=" | 247 | possible·to·change·both·directions·at·once:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">chk_algos_opts</span><span·class="p"·data-group-id="1462977182-1">(</span><span·class="w"> |
| 248 | ···············</span><span·class="p"·data-group-id=" | 248 | ···············</span><span·class="p"·data-group-id="1462977182-2">[</span><span·class="p"·data-group-id="1462977182-3">{</span><span·class="ss">preferred_algorithms</span><span·class="p">,</span><span·class="w"> |
| 249 | ·····················</span><span·class="p"·data-group-id=" | 249 | ·····················</span><span·class="p"·data-group-id="1462977182-4">[</span><span·class="p"·data-group-id="1462977182-5">{</span><span·class="ss">cipher</span><span·class="p">,</span><span·class="p"·data-group-id="1462977182-6">[</span><span·class="ss">'aes128-ctr'</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·64,·SHA:·be2d26ed3010979d4e97a19c9629d21b2acab77260f94775c1e29e44540772b9·...·]-5">}</span><span·class="w"> |
| 250 | ·····················</span><span·class="p"·data-group-id=" | 250 | ·····················</span><span·class="p"·data-group-id="1462977182-4">]</span><span·class="w"> |
| 251 | ················</span><span·class="p"·data-group-id=" | 251 | ················</span><span·class="p"·data-group-id="1462977182-3">}</span><span·class="w"> |
| 252 | ··············</span><span·class="p"·data-group-id=" | 252 | ··············</span><span·class="p"·data-group-id="1462977182-2">]</span><span·class="p"·data-group-id="1462977182-1">)</span><span·class="p">.</span><span·class="w"> |
| 253 | </span><span·class="p"·data-group-id=" | 253 | </span><span·class="p"·data-group-id="1462977182-7">[</span><span·class="p"·data-group-id="1462977182-8">{</span><span·class="ss">kex</span><span·class="p">,</span><span·class="p"·data-group-id="1462977182-9">[</span><span·class="ss">'ecdh-sha2-nistp384'</span><span·class="p">,</span><span·class="ss">'ecdh-sha2-nistp521'</span><span·class="p">,</span><span·class="w"> |
| 254 | ·······</span><span·class="ss">'ecdh-sha2-nistp256'</span><span·class="p">,</span><span·class="ss">'diffie-hellman-group-exchange-sha256'</span><span·class="p">,</span><span·class="w"> | 254 | ·······</span><span·class="ss">'ecdh-sha2-nistp256'</span><span·class="p">,</span><span·class="ss">'diffie-hellman-group-exchange-sha256'</span><span·class="p">,</span><span·class="w"> |
| 255 | ·······</span><span·class="ss">'diffie-hellman-group16-sha512'</span><span·class="p">,</span><span·class="w"> | 255 | ·······</span><span·class="ss">'diffie-hellman-group16-sha512'</span><span·class="p">,</span><span·class="w"> |
| 256 | ·······</span><span·class="ss">'diffie-hellman-group18-sha512'</span><span·class="p">,</span><span·class="w"> | 256 | ·······</span><span·class="ss">'diffie-hellman-group18-sha512'</span><span·class="p">,</span><span·class="w"> |
| 257 | ·······</span><span·class="ss">'diffie-hellman-group14-sha256'</span><span·class="p">,</span><span·class="w"> | 257 | ·······</span><span·class="ss">'diffie-hellman-group14-sha256'</span><span·class="p">,</span><span·class="w"> |
| 258 | ·······</span><span·class="ss">'diffie-hellman-group14-sha1'</span><span·class="p">,</span><span·class="w"> | 258 | ·······</span><span·class="ss">'diffie-hellman-group14-sha1'</span><span·class="p">,</span><span·class="w"> |
| 259 | ·······</span><span·class="ss">'diffie-hellman-group-exchange-sha1'</span><span·class="p"·data-group-id=" | 259 | ·······</span><span·class="ss">'diffie-hellman-group-exchange-sha1'</span><span·class="p"·data-group-id="1462977182-9">]</span><span·class="p"·data-group-id="1462977182-8">}</span><span·class="p">,</span><span·class="w"> |
| 260 | ·</span><span·class="p"·data-group-id=" | 260 | ·</span><span·class="p"·data-group-id="1462977182-10">{</span><span·class="ss">public_key</span><span·class="p">,</span><span·class="p"·data-group-id="1462977182-11">[</span><span·class="ss">'ecdsa-sha2-nistp384'</span><span·class="p">,</span><span·class="ss">'ecdsa-sha2-nistp521'</span><span·class="p">,</span><span·class="w"> |
| 261 | ··············</span><span·class="ss">'ecdsa-sha2-nistp256'</span><span·class="p">,</span><span·class="ss">'ssh-rsa'</span><span·class="p">,</span><span·class="ss">'rsa-sha2-256'</span><span·class="p">,</span><span·class="w"> | 261 | ··············</span><span·class="ss">'ecdsa-sha2-nistp256'</span><span·class="p">,</span><span·class="ss">'ssh-rsa'</span><span·class="p">,</span><span·class="ss">'rsa-sha2-256'</span><span·class="p">,</span><span·class="w"> |
| 262 | ··············</span><span·class="ss">'rsa-sha2-512'</span><span·class="p">,</span><span·class="ss">'ssh-dss'</span><span·class="p"·data-group-id=" | 262 | ··············</span><span·class="ss">'rsa-sha2-512'</span><span·class="p">,</span><span·class="ss">'ssh-dss'</span><span·class="p"·data-group-id="1462977182-11">]</span><span·class="p"·data-group-id="1462977182-10">}</span><span·class="p">,</span><span·class="w"> |
| 263 | ·</span><span·class="p"·data-group-id=" | 263 | ·</span><span·class="p"·data-group-id="1462977182-12">{</span><span·class="ss">cipher</span><span·class="p">,</span><span·class="p"·data-group-id="1462977182-13">[</span><span·class="p"·data-group-id="1462977182-14">{</span><span·class="ss">client2server</span><span·class="p">,</span><span·clas[·...·truncated·by·diffoscope;·len:·183,·SHA:·dfb6284fe1d1d9f19bccaedc75b5741b702a84b0e5be26d100814915f073c2e2·...·]-14">}</span><span·class="p">,</span><span·class="w"> |
| 264 | ··········</span><span·class="p"·data-group-id=" | 264 | ··········</span><span·class="p"·data-group-id="1462977182-16">{</span><span·class="ss">server2client</span><span·class="p">,</span><span·class="p"·data-group-id="1462977182-17">[</span><span·class="ss">'aes128-ctr'</span><span·class="p"·data-group-id="1462977182-17">]</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·129,·SHA:·4443f3733aee65986406c3f20a2cc8ff75c343433e116109630a84657850957d·...·]-12">}</span><span·class="p">,</span><span·class="w"> |
| 265 | ·</span><span·class="p"·data-group-id=" | 265 | ·</span><span·class="p"·data-group-id="1462977182-18">{</span><span·class="ss">mac</span><span·class="p">,</span><span·class="p"·data-group-id="1462977182-19">[</span><span·class="p"·data-group-id="1462977182-20">{</span><span·class="ss">client2server</span><span·class="p">,</span><span·class="[·...·truncated·by·diffoscope;·len:·28,·SHA:·d0441b0c868fe97f947f49b7dc75052aba284063a28a47e82100c0cec51d26d5·...·]-21">[</span><span·class="ss">'hmac-sha2-256'</span><span·class="p">,</span><span·class="ss">'hmac-sha2-512'</span><span·class="p">,</span><span·class="w"> |
| 266 | ·······················</span><span·class="ss">'hmac-sha1'</span><span·class="p"·data-group-id=" | 266 | ·······················</span><span·class="ss">'hmac-sha1'</span><span·class="p"·data-group-id="1462977182-21">]</span><span·class="p"·data-group-id="1462977182-20">}</span><span·class="p">,</span><span·class="w"> |
| 267 | ·······</span><span·class="p"·data-group-id=" | 267 | ·······</span><span·class="p"·data-group-id="1462977182-22">{</span><span·class="ss">server2client</span><span·class="p">,</span><span·class="p"·data-group-id="1462977182-23">[</span><span·class="ss">'hmac-sha2-256'</span><span·class="p">,</span><span·class="ss">'hmac-sha2-512'</span><span·class="p">,</span><span·class="w"> |
| 268 | ·······················</span><span·class="ss">'hmac-sha1'</span><span·class="p"·data-group-id=" | 268 | ·······················</span><span·class="ss">'hmac-sha1'</span><span·class="p"·data-group-id="1462977182-23">]</span><span·class="p"·data-group-id="1462977182-22">}</span><span·class="p"·data-group-id="1462977182-19">]</span><span·class="p"·data-group-id="1462977182-18">}</span><span·class="p">,</span><span·class="w"> |
| 269 | ·</span><span·class="p"·data-group-id=" | 269 | ·</span><span·class="p"·data-group-id="1462977182-24">{</span><span·class="ss">compression</span><span·class="p">,</span><span·class="p"·data-group-id="1462977182-25">[</span><span·class="p"·data-group-id="1462977182-26">{</span><span·class="ss">client2server</span><span·class="p">,</span><span[·...·truncated·by·diffoscope;·len:·298,·SHA:·cae3903c3d7c844e33b422f3dfa2e59c84451ed83aac83df855a5a89cd8a6525·...·]-26">}</span><span·class="p">,</span><span·class="w"> |
| 270 | ···············</span><span·class="p"·data-group-id=" | 270 | ···············</span><span·class="p"·data-group-id="1462977182-28">{</span><span·class="ss">server2client</span><span·class="p">,</span><span·class="p"·data-group-id="1462977182-29">[</span><span·class="ss">none</span><span·class="p">,</span><span·class="ss">'zlib@openssh.com'</span><span·class="p">[·...·truncated·by·diffoscope;·len:·293,·SHA:·402ca58617c78d3ea22715192031376712328a6ab0509d65968a573cceb237a7·...·]-7">]</span></code></pre><p>Note·that·both·lists·in·<code·class="inline">cipher</code>·has·been·changed·to·the·provided·value |
| 271 | (<code·class="inline">'aes128-ctr'</code>).</p><h3·id="example-3"·class="section-heading"> | 271 | (<code·class="inline">'aes128-ctr'</code>).</p><h3·id="example-3"·class="section-heading"> |
| 272 | ··<a·href="#example-3"·class="hover-link"> | 272 | ··<a·href="#example-3"·class="hover-link"> |
| 273 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 273 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 274 | ··</a> | 274 | ··</a> |
| 275 | ··<span·class="text">Example·3</span> | 275 | ··<span·class="text">Example·3</span> |
| 276 | </h3> | 276 | </h3> |
| 277 | <p>In·the·lists·that·are·divided·in·two·for·the·two·directions·(for·example·<code·class="inline">cipher</code>)·it·is | 277 | <p>In·the·lists·that·are·divided·in·two·for·the·two·directions·(for·example·<code·class="inline">cipher</code>)·it·is |
| 278 | possible·to·change·only·one·of·the·directions:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">chk_algos_opts</span><span·class="p"·data-group-id=" | 278 | possible·to·change·only·one·of·the·directions:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">chk_algos_opts</span><span·class="p"·data-group-id="4986270881-1">(</span><span·class="w"> |
| 279 | ···············</span><span·class="p"·data-group-id=" | 279 | ···············</span><span·class="p"·data-group-id="4986270881-2">[</span><span·class="p"·data-group-id="4986270881-3">{</span><span·class="ss">preferred_algorithms</span><span·class="p">,</span><span·class="w"> |
| 280 | ·····················</span><span·class="p"·data-group-id=" | 280 | ·····················</span><span·class="p"·data-group-id="4986270881-4">[</span><span·class="p"·data-group-id="4986270881-5">{</span><span·class="ss">cipher</span><span·class="p">,</span><span·class="p"·data-group-id="4986270881-6">[</span><span·class="p"·data-group-id="4986270881-7">{</span><span·class="ss">clie[·...·truncated·by·diffoscope;·len:·337,·SHA:·a4daf29eb94e1ff0d9c71eb0d7ee3d6a95b9be430d00211c5b89798023cba9d8·...·]-5">}</span><span·class="w"> |
| 281 | ·····················</span><span·class="p"·data-group-id=" | 281 | ·····················</span><span·class="p"·data-group-id="4986270881-4">]</span><span·class="w"> |
| 282 | ················</span><span·class="p"·data-group-id=" | 282 | ················</span><span·class="p"·data-group-id="4986270881-3">}</span><span·class="w"> |
| 283 | ··············</span><span·class="p"·data-group-id=" | 283 | ··············</span><span·class="p"·data-group-id="4986270881-2">]</span><span·class="p"·data-group-id="4986270881-1">)</span><span·class="p">.</span><span·class="w"> |
| 284 | </span><span·class="p"·data-group-id=" | 284 | </span><span·class="p"·data-group-id="4986270881-9">[</span><span·class="p"·data-group-id="4986270881-10">{</span><span·class="ss">kex</span><span·class="p">,</span><span·class="p"·data-group-id="4986270881-11">[</span><span·class="ss">'ecdh-sha2-nistp384'</span><span·class="p">,</span><span·class="ss">'ecdh-sha2-nistp521'</span><span·class="p">,</span><span·class="w"> |
| 285 | ·······</span><span·class="ss">'ecdh-sha2-nistp256'</span><span·class="p">,</span><span·class="ss">'diffie-hellman-group-exchange-sha256'</span><span·class="p">,</span><span·class="w"> | 285 | ·······</span><span·class="ss">'ecdh-sha2-nistp256'</span><span·class="p">,</span><span·class="ss">'diffie-hellman-group-exchange-sha256'</span><span·class="p">,</span><span·class="w"> |
| 286 | ·······</span><span·class="ss">'diffie-hellman-group16-sha512'</span><span·class="p">,</span><span·class="w"> | 286 | ·······</span><span·class="ss">'diffie-hellman-group16-sha512'</span><span·class="p">,</span><span·class="w"> |
| 287 | ·······</span><span·class="ss">'diffie-hellman-group18-sha512'</span><span·class="p">,</span><span·class="w"> | 287 | ·······</span><span·class="ss">'diffie-hellman-group18-sha512'</span><span·class="p">,</span><span·class="w"> |
| 288 | ·······</span><span·class="ss">'diffie-hellman-group14-sha256'</span><span·class="p">,</span><span·class="w"> | 288 | ·······</span><span·class="ss">'diffie-hellman-group14-sha256'</span><span·class="p">,</span><span·class="w"> |
| 289 | ·······</span><span·class="ss">'diffie-hellman-group14-sha1'</span><span·class="p">,</span><span·class="w"> | 289 | ·······</span><span·class="ss">'diffie-hellman-group14-sha1'</span><span·class="p">,</span><span·class="w"> |
| 290 | ·······</span><span·class="ss">'diffie-hellman-group-exchange-sha1'</span><span·class="p"·data-group-id=" | 290 | ·······</span><span·class="ss">'diffie-hellman-group-exchange-sha1'</span><span·class="p"·data-group-id="4986270881-11">]</span><span·class="p"·data-group-id="4986270881-10">}</span><span·class="p">,</span><span·class="w"> |
| 291 | ·</span><span·class="p"·data-group-id=" | 291 | ·</span><span·class="p"·data-group-id="4986270881-12">{</span><span·class="ss">public_key</span><span·class="p">,</span><span·class="p"·data-group-id="4986270881-13">[</span><span·class="ss">'ecdsa-sha2-nistp384'</span><span·class="p">,</span><span·class="ss">'ecdsa-sha2-nistp521'</span><span·class="p">,</span><span·class="w"> |
| 292 | ··············</span><span·class="ss">'ecdsa-sha2-nistp256'</span><span·class="p">,</span><span·class="ss">'ssh-rsa'</span><span·class="p">,</span><span·class="ss">'rsa-sha2-256'</span><span·class="p">,</span><span·class="w"> | 292 | ··············</span><span·class="ss">'ecdsa-sha2-nistp256'</span><span·class="p">,</span><span·class="ss">'ssh-rsa'</span><span·class="p">,</span><span·class="ss">'rsa-sha2-256'</span><span·class="p">,</span><span·class="w"> |
| 293 | ··············</span><span·class="ss">'rsa-sha2-512'</span><span·class="p">,</span><span·class="ss">'ssh-dss'</span><span·class="p"·data-group-id=" | 293 | ··············</span><span·class="ss">'rsa-sha2-512'</span><span·class="p">,</span><span·class="ss">'ssh-dss'</span><span·class="p"·data-group-id="4986270881-13">]</span><span·class="p"·data-group-id="4986270881-12">}</span><span·class="p">,</span><span·class="w"> |
| 294 | ·</span><span·class="p"·data-group-id=" | 294 | ·</span><span·class="p"·data-group-id="4986270881-14">{</span><span·class="ss">cipher</span><span·class="p">,</span><span·class="p"·data-group-id="4986270881-15">[</span><span·class="p"·data-group-id="4986270881-16">{</span><span·class="ss">client2server</span><span·class="p">,</span><span·clas[·...·truncated·by·diffoscope;·len:·183,·SHA:·62570b9a26570bc79eca370bb9b79150019b0f219a2acb7b81737a6509ed7462·...·]-16">}</span><span·class="p">,</span><span·class="w"> |
| 295 | ··········</span><span·class="p"·data-group-id=" | 295 | ··········</span><span·class="p"·data-group-id="4986270881-18">{</span><span·class="ss">server2client</span><span·class="p">,</span><span·class="p"·data-group-id="4986270881-19">[</span><span·class="ss">'aes256-gcm@openssh.com'</span><span·class="p">,</span><span·class="ss">'aes256-ctr'</span><span·class="p">,</span><span·class="w"> |
| 296 | ··························</span><span·class="ss">'aes192-ctr'</span><span·class="p">,</span><span·class="ss">'aes128-gcm@openssh.com'</span><span·class="p">,</span><span·class="ss">'aes128-ctr'</span><span·class="p">,</span><span·class="w"> | 296 | ··························</span><span·class="ss">'aes192-ctr'</span><span·class="p">,</span><span·class="ss">'aes128-gcm@openssh.com'</span><span·class="p">,</span><span·class="ss">'aes128-ctr'</span><span·class="p">,</span><span·class="w"> |
| 297 | ··························</span><span·class="ss">'aes128-cbc'</span><span·class="p">,</span><span·class="ss">'3des-cbc'</span><span·class="p"·data-group-id=" | 297 | ··························</span><span·class="ss">'aes128-cbc'</span><span·class="p">,</span><span·class="ss">'3des-cbc'</span><span·class="p"·data-group-id="4986270881-19">]</span><span·class="p"·data-group-id="4986270881-18">}</span><span·class="p"·data-group-id="4986270881-15">]</span><span·class="p"·data-group-id="4986270881-14">}</span><span·class="p">,</span><span·class="w"> |
| 298 | ·</span><span·class="p"·data-group-id=" | 298 | ·</span><span·class="p"·data-group-id="4986270881-20">{</span><span·class="ss">mac</span><span·class="p">,</span><span·class="p"·data-group-id="4986270881-21">[</span><span·class="p"·data-group-id="4986270881-22">{</span><span·class="ss">client2server</span><span·class="p">,</span><span·class="[·...·truncated·by·diffoscope;·len:·28,·SHA:·6de5f9cbca76b27079bdaed92fae1fda6d82615f175bcd6fdc73c4a74b57da07·...·]-23">[</span><span·class="ss">'hmac-sha2-256'</span><span·class="p">,</span><span·class="ss">'hmac-sha2-512'</span><span·class="p">,</span><span·class="w"> |
| 299 | ·······················</span><span·class="ss">'hmac-sha1'</span><span·class="p"·data-group-id=" | 299 | ·······················</span><span·class="ss">'hmac-sha1'</span><span·class="p"·data-group-id="4986270881-23">]</span><span·class="p"·data-group-id="4986270881-22">}</span><span·class="p">,</span><span·class="w"> |
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| 210 | ··<span·class="text">Verifying·the·remote·client·in·a·daemon·(server)</span> | 210 | ··<span·class="text">Verifying·the·remote·client·in·a·daemon·(server)</span> |
| 211 | </h2> | 211 | </h2> |
| 212 | <ul><li><p><strong>Password·checking</strong>·-·The·default·password·checking·is·with·the·list·in·the | 212 | <ul><li><p><strong>Password·checking</strong>·-·The·default·password·checking·is·with·the·list·in·the |
| 213 | <a·href="ssh.html#option-user_passwords">user_passwords</a>·option·in·the·SSH·daemon.·It | 213 | <a·href="ssh.html#option-user_passwords">user_passwords</a>·option·in·the·SSH·daemon.·It |
| 214 | could·be·replaced·with·a·<a·href="ssh.html#option-pwdfun">pwdfun</a>·plugin.·The·arity | 214 | could·be·replaced·with·a·<a·href="ssh.html#option-pwdfun">pwdfun</a>·plugin.·The·arity |
| 215 | four·variant·(<a·href="ssh.html#t:pwdfun_4/0"><code·class="inline">pwdfun_4()</code></a>)·can·also·be·used·for | 215 | four·variant·(<a·href="ssh.html#t:pwdfun_4/0"><code·class="inline">pwdfun_4()</code></a>)·can·also·be·used·for |
| 216 | introducing·delays·after·failed·password·checking·attempts.·Here·is·a·simple | 216 | introducing·delays·after·failed·password·checking·attempts.·Here·is·a·simple |
| 217 | example·of·such·a·pwdfun:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="p"·data-group-id=" | 217 | example·of·such·a·pwdfun:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="p"·data-group-id="0217191928-1">(</span><span·class="n">User</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Password</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">PeerAddress</span><span·class="p">,</spa[·...·truncated·by·diffoscope;·len:·95,·SHA:·da15f0f7db6fb09637dc7b5de4df022d7e4fc2bc1b57fdaad87cc5c82f51ff9d·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 218 | ········</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">member</span><span·class="p"·data-group-id=" | 218 | ········</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">member</span><span·class="p"·data-group-id="0217191928-2">(</span><span·class="p"·data-group-id="0217191928-3">{</span><span·class="n">User</span><span·class="p">,</span><span·class="n">Password</span><span·class="p"·data-group-id="0217191928-3">}</span><span·class="p">,</span><span·class="w">·</spa[·...·truncated·by·diffoscope;·len:·185,·SHA:·f9b942c8b0c3e17b9f0462f4d0f2a8f1b3bdc1def1e8d91e3a6e19e677206627·...·]-2">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 219 | ············</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 219 | ············</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 220 | ················</span><span·class="p"·data-group-id=" | 220 | ················</span><span·class="p"·data-group-id="0217191928-5">{</span><span·class="ss">true</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">undefined</span><span·class="p"·data-group-id="0217191928-5">}</span><span·class="p">;</span><span·class="w">·</span><span·class="c1">%·Reset·delay·time</span><span·class="w"> |
| 221 | ············</span><span·class="ss">false</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="n">State</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="ss">undefined</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 221 | ············</span><span·class="ss">false</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="n">State</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="ss">undefined</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 222 | ················</span><span·class="nc">timer</span><span·class="p">:</span><span·class="nf">sleep</span><span·class="p"·data-group-id=" | 222 | ················</span><span·class="nc">timer</span><span·class="p">:</span><span·class="nf">sleep</span><span·class="p"·data-group-id="0217191928-6">(</span><span·class="mi">1000</span><span·class="p"·data-group-id="0217191928-6">)</span><span·class="p">,</span><span·class="w"> |
| 223 | ················</span><span·class="p"·data-group-id=" | 223 | ················</span><span·class="p"·data-group-id="0217191928-7">{</span><span·class="ss">false</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">2000</span><span·class="p"·data-group-id="0217191928-7">}</span><span·class="p">;</span><span·class="w">·</span><span·class="c1">%·Next·delay·is·2000·ms</span><span·class="w"> |
| 224 | ············</span><span·class="ss">false</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_integer</span><span·class="p"·data-group-id=" | 224 | ············</span><span·class="ss">false</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_integer</span><span·class="p"·data-group-id="0217191928-8">(</span><span·class="n">State</span><span·class="p"·data-group-id="0217191928-8">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 225 | ················</span><span·class="nc">timer</span><span·class="p">:</span><span·class="nf">sleep</span><span·class="p"·data-group-id=" | 225 | ················</span><span·class="nc">timer</span><span·class="p">:</span><span·class="nf">sleep</span><span·class="p"·data-group-id="0217191928-9">(</span><span·class="n">State</span><span·class="p"·data-group-id="0217191928-9">)</span><span·class="p">,</span><span·class="w"> |
| 226 | ················</span><span·class="p"·data-group-id=" | 226 | ················</span><span·class="p"·data-group-id="0217191928-10">{</span><span·class="ss">false</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">2</span><span·class="o">*</span><span·class="n">State</span><span·class="p"·data-group-id="0217191928-10">}</span><span·class="w">·</span><span·class="c1">%·Double·the·delay·for·each·failure</span><span·class="w"> |
| 227 | ········</span><span·class="k">end</span><span·class="w"> | 227 | ········</span><span·class="k">end</span><span·class="w"> |
| 228 | </span><span·class="k">end</span><span·class="p">.</span></code></pre><p>If·a·public·key·is·used·for·logging·in,·there·is·normally·no·checking·of·the | 228 | </span><span·class="k">end</span><span·class="p">.</span></code></pre><p>If·a·public·key·is·used·for·logging·in,·there·is·normally·no·checking·of·the |
| 229 | user·name.·It·could·be·enabled·by·setting·the·option | 229 | user·name.·It·could·be·enabled·by·setting·the·option |
| 230 | <a·href="ssh.html#option-pk_check_user"><code·class="inline">pk_check_user</code></a>·to·<code·class="inline">true</code>.·In·that·case·the | 230 | <a·href="ssh.html#option-pk_check_user"><code·class="inline">pk_check_user</code></a>·to·<code·class="inline">true</code>.·In·that·case·the |
| 231 | pwdfun·will·get·the·atom·<code·class="inline">pubkey</code>·in·the·password·argument.</p></li></ul><h2·id="hardening-in-the-cryptographic-area"·class="section-heading"> | 231 | pwdfun·will·get·the·atom·<code·class="inline">pubkey</code>·in·the·password·argument.</p></li></ul><h2·id="hardening-in-the-cryptographic-area"·class="section-heading"> |
| 232 | ··<a·href="#hardening-in-the-cryptographic-area"·class="hover-link"> | 232 | ··<a·href="#hardening-in-the-cryptographic-area"·class="hover-link"> |
| 233 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 233 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 288, 15 lines modified | Offset 288, 15 lines modified | ||
| 288 | ··<span·class="text">The·id·string</span> | 288 | ··<span·class="text">The·id·string</span> |
| 289 | </h3> | 289 | </h3> |
| 290 | <p>One·way·to·reduce·the·risk·of·intrusion·is·to·not·convey·which·software·and | 290 | <p>One·way·to·reduce·the·risk·of·intrusion·is·to·not·convey·which·software·and |
| 291 | which·version·the·intruder·is·connected·to.·This·limits·the·risk·of·an·intruder | 291 | which·version·the·intruder·is·connected·to.·This·limits·the·risk·of·an·intruder |
| 292 | exploiting·known·faults·or·peculiarities·learned·by·reading·the·public·code.</p><p>Each·SSH·client·or·daemon·presents·themselves·to·each·other·with·brand·and | 292 | exploiting·known·faults·or·peculiarities·learned·by·reading·the·public·code.</p><p>Each·SSH·client·or·daemon·presents·themselves·to·each·other·with·brand·and |
| 293 | version.·This·may·look·like</p><pre><code·class="text">SSH-2.0-Erlang/4.10</code></pre><p>or</p><pre><code·class="text">SSH-2.0-OpenSSH_7.6p1·Ubuntu-4ubuntu0.3</code></pre><p>This·brand·and·version·may·be·changed·with·the·option | 293 | version.·This·may·look·like</p><pre><code·class="text">SSH-2.0-Erlang/4.10</code></pre><p>or</p><pre><code·class="text">SSH-2.0-OpenSSH_7.6p1·Ubuntu-4ubuntu0.3</code></pre><p>This·brand·and·version·may·be·changed·with·the·option |
| 294 | <a·href="ssh.html#t:id_string_common_option/0">id_string</a>.·We·start·a·daemon·with·that | 294 | <a·href="ssh.html#t:id_string_common_option/0">id_string</a>.·We·start·a·daemon·with·that |
| 295 | option:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">»</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">daemon</span><span·class="p"·data-group-id="6 | 295 | option:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">»</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">daemon</span><span·class="p"·data-group-id="1683753183-1">(</span><span·class="mi">1234</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1683753183-2">[</span><span·class="p"·data-group-id="1683753183-3">{</span><span·class="ss">id_string</span><span·class="p">,</[·...·truncated·by·diffoscope;·len:·339,·SHA:·16aa69d9c67c3f21acd4d30a7334e7e1dd87005e1b1c43664822ebe5beab5994·...·]-1">)</span><span·class="p">.</span></code></pre><p>and·the·daemon·will·present·itself·as:</p><pre><code·class="text">SSH-2.0-hi·there</code></pre><p>It·is·possible·to·replace·the·string·with·one·randomly·generated·for·each |
| 296 | connection·attempt.·See·the·reference·manual·for | 296 | connection·attempt.·See·the·reference·manual·for |
| 297 | <a·href="ssh.html#t:id_string_common_option/0">id_string</a>.</p><h2·id="client-connection-options"·class="section-heading"> | 297 | <a·href="ssh.html#t:id_string_common_option/0">id_string</a>.</p><h2·id="client-connection-options"·class="section-heading"> |
| 298 | ··<a·href="#client-connection-options"·class="hover-link"> | 298 | ··<a·href="#client-connection-options"·class="hover-link"> |
| 299 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 299 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 300 | ··</a> | 300 | ··</a> |
| 301 | ··<span·class="text">Client·connection·options</span> | 301 | ··<span·class="text">Client·connection·options</span> |
| 302 | </h2> | 302 | </h2> |
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| 2 | ?rw-r--r--··6.1·unx·······20·bx·stor·25-Mar-18·0 | 2 | ?rw-r--r--··6.1·unx·······20·bx·stor·25-Mar-18·08:51·mimetype |
| 3 | ?rw-r--r--··6.1·unx···115972·bx·defN·25-Mar-18·0 | 3 | ?rw-r--r--··6.1·unx···115972·bx·defN·25-Mar-18·08:51·OEBPS/using_ssh.xhtml |
| 4 | ?rw-r--r--··6.1·unx······710·bx·defN·25-Mar-18·0 | 4 | ?rw-r--r--··6.1·unx······710·bx·defN·25-Mar-18·08:51·OEBPS/title.xhtml |
| 5 | ?rw-r--r--··6.1·unx·····7853·bx·defN·25-Mar-18·0 | 5 | ?rw-r--r--··6.1·unx·····7853·bx·defN·25-Mar-18·08:51·OEBPS/terminology.xhtml |
| 6 | ?rw-r--r--··6.1·unx·····5270·bx·defN·25-Mar-18·0 | 6 | ?rw-r--r--··6.1·unx·····5270·bx·defN·25-Mar-18·08:51·OEBPS/ssh_sftpd.xhtml |
| 7 | ?rw-r--r--··6.1·unx···116566·bx·defN·25-Mar-18·0 | 7 | ?rw-r--r--··6.1·unx···116566·bx·defN·25-Mar-18·08:51·OEBPS/ssh_sftp.xhtml |
| 8 | ?rw-r--r--··6.1·unx·····6495·bx·defN·25-Mar-18·0 | 8 | ?rw-r--r--··6.1·unx·····6495·bx·defN·25-Mar-18·08:51·OEBPS/ssh_server_key_api.xhtml |
| 9 | ?rw-r--r--··6.1·unx····11494·bx·defN·25-Mar-18·0 | 9 | ?rw-r--r--··6.1·unx····11494·bx·defN·25-Mar-18·08:51·OEBPS/ssh_server_channel.xhtml |
| 10 | ?rw-r--r--··6.1·unx····42907·bx·defN·25-Mar-18·0 | 10 | ?rw-r--r--··6.1·unx····42907·bx·defN·25-Mar-18·08:51·OEBPS/ssh_file.xhtml |
| 11 | ?rw-r--r--··6.1·unx····71207·bx·defN·25-Mar-18·0 | 11 | ?rw-r--r--··6.1·unx····71207·bx·defN·25-Mar-18·08:51·OEBPS/ssh_connection.xhtml |
| 12 | ?rw-r--r--··6.1·unx····17279·bx·defN·25-Mar-18·0 | 12 | ?rw-r--r--··6.1·unx····17279·bx·defN·25-Mar-18·08:51·OEBPS/ssh_client_key_api.xhtml |
| 13 | ?rw-r--r--··6.1·unx····38219·bx·defN·25-Mar-18·0 | 13 | ?rw-r--r--··6.1·unx····38219·bx·defN·25-Mar-18·08:51·OEBPS/ssh_client_channel.xhtml |
| 14 | ?rw-r--r--··6.1·unx····19443·bx·defN·25-Mar-18·0 | 14 | ?rw-r--r--··6.1·unx····19443·bx·defN·25-Mar-18·08:51·OEBPS/ssh_app.xhtml |
| 15 | ?rw-r--r--··6.1·unx····18835·bx·defN·25-Mar-18·0 | 15 | ?rw-r--r--··6.1·unx····18835·bx·defN·25-Mar-18·08:51·OEBPS/ssh_agent.xhtml |
| 16 | ?rw-r--r--··6.1·unx···243131·bx·defN·25-Mar-18·0 | 16 | ?rw-r--r--··6.1·unx···243131·bx·defN·25-Mar-18·08:51·OEBPS/ssh.xhtml |
| 17 | ?rw-r--r--··6.1·unx···218718·bx·defN·25-Mar-18·0 | 17 | ?rw-r--r--··6.1·unx···218718·bx·defN·25-Mar-18·08:51·OEBPS/notes.xhtml |
| 18 | ?rw-r--r--··6.1·unx·····2043·bx·defN·25-Mar-18·0 | 18 | ?rw-r--r--··6.1·unx·····2043·bx·defN·25-Mar-18·08:51·OEBPS/nav.xhtml |
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| 24 | ?rw-r--r--··6.1·unx····74880·bx·defN·25-Mar-18·0 | 24 | ?rw-r--r--··6.1·unx····74880·bx·defN·25-Mar-18·08:51·OEBPS/configure_algos.xhtml |
| 25 | ?rw-r--r--··6.1·unx····38891·bx·defN·25-Mar-18·0 | 25 | ?rw-r--r--··6.1·unx····38891·bx·defN·25-Mar-18·08:51·OEBPS/configurations.xhtml |
| 26 | ?rw-r--r--··6.1·unx····40281·bx·defN·25-Mar-18·0 | 26 | ?rw-r--r--··6.1·unx····40281·bx·defN·25-Mar-18·08:51·OEBPS/assets/ssh_timeouts.jpg |
| 27 | ?rw-r--r--··6.1·unx·····5837·bx·defN·25-Mar-18·0 | 27 | ?rw-r--r--··6.1·unx·····5837·bx·defN·25-Mar-18·08:51·OEBPS/assets/logo.png |
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| 26 | <p>Callback·module·for·using·an·SSH·agent·instead·of·the·default·ssh_file·callback.</p><p>This·module·defines·a·callback·handler·for·the·communication·with·an | 26 | <p>Callback·module·for·using·an·SSH·agent·instead·of·the·default·ssh_file·callback.</p><p>This·module·defines·a·callback·handler·for·the·communication·with·an |
| 27 | <a·href="https://tools.ietf.org/html/draft-miller-ssh-agent-02">SSH·Agent</a>·and·can·be | 27 | <a·href="https://tools.ietf.org/html/draft-miller-ssh-agent-02">SSH·Agent</a>·and·can·be |
| 28 | used·to·replace·the·<a·href="ssh_file.xhtml">default·callback</a>.·This·allows·to·issue | 28 | used·to·replace·the·<a·href="ssh_file.xhtml">default·callback</a>.·This·allows·to·issue |
| 29 | signing·requests·to·an·agent·that·stores·SSH·private·keys·to·perform | 29 | signing·requests·to·an·agent·that·stores·SSH·private·keys·to·perform |
| 30 | authentication.</p><p>Ssh_agent·implements·the·<a·href="ssh_client_key_api.xhtml"><code·class="inline">ssh_client_key_api</code></a>,·to·allow·it·to·be·used·by | 30 | authentication.</p><p>Ssh_agent·implements·the·<a·href="ssh_client_key_api.xhtml"><code·class="inline">ssh_client_key_api</code></a>,·to·allow·it·to·be·used·by |
| 31 | setting·the·option·<a·href="ssh.xhtml#t:key_cb_common_option/0"><code·class="inline">key_cb</code></a>·when·starting·a | 31 | setting·the·option·<a·href="ssh.xhtml#t:key_cb_common_option/0"><code·class="inline">key_cb</code></a>·when·starting·a |
| 32 | client·(with·for·example·<a·href="ssh.xhtml#connect/3">ssh:connect</a>, | 32 | client·(with·for·example·<a·href="ssh.xhtml#connect/3">ssh:connect</a>, |
| 33 | <a·href="ssh.xhtml#shell/1">ssh:shell</a>·).</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="w">······</samp><samp·class="p"·data-group-id=" | 33 | <a·href="ssh.xhtml#shell/1">ssh:shell</a>·).</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="w">······</samp><samp·class="p"·data-group-id="2202522132-1">{</samp><samp·class="ss">key_cb</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="p"·data-group-id="2202522132-2">{</samp><samp·class="ss">ssh_agent</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="p"·data-g[·...·truncated·by·diffoscope;·len:·178,·SHA:·69f8fbadc25f7310c68114851811ea95e96a5d548c66031c4a9f77c216bde128·...·]-1">}</samp></code></pre><p>The·agent·communication·is·established·through·a·UNIX·domain·socket.·By·default, |
| 34 | the·socket·path·will·be·fetched·from·the·<code·class="inline">SSH_AUTH_SOCK</code>·environment·variable, | 34 | the·socket·path·will·be·fetched·from·the·<code·class="inline">SSH_AUTH_SOCK</code>·environment·variable, |
| 35 | which·is·the·default·socket·path·in·the·agent·implementation·of | 35 | which·is·the·default·socket·path·in·the·agent·implementation·of |
| 36 | <a·href="http://www.openssh.com">OpenSSH</a>.</p><p><a·href=""·id="SOCKET_PATH"></a>·In·order·to·set·a·different·socket·path·the·<code·class="inline">socket_path</code> | 36 | <a·href="http://www.openssh.com">OpenSSH</a>.</p><p><a·href=""·id="SOCKET_PATH"></a>·In·order·to·set·a·different·socket·path·the·<code·class="inline">socket_path</code> |
| 37 | option·can·be·set.</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="w">······</samp><samp·class="p"·data-group-id=" | 37 | option·can·be·set.</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="w">······</samp><samp·class="p"·data-group-id="8762041665-1">{</samp><samp·class="ss">key_cb</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="p"·data-group-id="8762041665-2">{</samp><samp·class="ss">ssh_agent</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="p"·data-g[·...·truncated·by·diffoscope;·len:·400,·SHA:·84473cb080c0bf49557015a299afd04f7fdd287c6850e457ab89671da503d7e4·...·]-1">}</samp></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>The·functions·are·<em>Callbacks</em>·for·the·SSH·app.·They·are·not·intended·to·be |
| 38 | called·from·the·user's·code!</p></section> | 38 | called·from·the·user's·code!</p></section> |
| 39 | ······</section> | 39 | ······</section> |
| 40 | ······<section·id="summary"·class="details-list"> | 40 | ······<section·id="summary"·class="details-list"> |
| 41 | ········<h1·class="section-heading">Summary</h1> | 41 | ········<h1·class="section-heading">Summary</h1> |
| 42 | <div·class="summary-types-options·summary"> | 42 | <div·class="summary-types-options·summary"> |
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| 3369 | ··········<pre·translate="no"><span·class="attribute">-type</span>·double_algs(AlgType)·::·[{client2server,·[AlgType]}·|·{server2client,·[AlgType]}]·|·[AlgType].</pre> | 3369 | ··········<pre·translate="no"><span·class="attribute">-type</span>·double_algs(AlgType)·::·[{client2server,·[AlgType]}·|·{server2client,·[AlgType]}]·|·[AlgType].</pre> |
| 3370 | ······</div> | 3370 | ······</div> |
| 3371 | <p>List·of·algorithms·to·use·in·the·algorithm·negotiation.·The·default | 3371 | <p>List·of·algorithms·to·use·in·the·algorithm·negotiation.·The·default |
| 3372 | <a·href="#t:algs_list/0"><code·class="inline">algs_list/0</code></a>·can·be·obtained·from·<a·href="#default_algorithms/0"><code·class="inline">default_algorithms/0</code></a>.</p><p>If·an·alg_entry()·is·missing·in·the·algs_list(),·the·default·value·is·used·for | 3372 | <a·href="#t:algs_list/0"><code·class="inline">algs_list/0</code></a>·can·be·obtained·from·<a·href="#default_algorithms/0"><code·class="inline">default_algorithms/0</code></a>.</p><p>If·an·alg_entry()·is·missing·in·the·algs_list(),·the·default·value·is·used·for |
| 3373 | that·entry.</p><p>Here·is·an·example·of·this·option:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">» ··</span><span·class="p"·data-group-id=" | 3373 | that·entry.</p><p>Here·is·an·example·of·this·option:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">» ··</span><span·class="p"·data-group-id="4640323326-1">{</span><span·class="ss">preferred_algorithms</span><span·class="p">,</span><span·class="w"> |
| 3374 | » ··</span><span·class="p"·data-group-id=" | 3374 | » ··</span><span·class="p"·data-group-id="4640323326-2">[</span><span·class="p"·data-group-id="4640323326-3">{</span><span·class="ss">public_key</span><span·class="p">,</span><span·class="p"·data-group-id="4640323326-4">[</span><span·class="ss">'ssh-rsa'</span><span·class="p">,</span><span[·...·truncated·by·diffoscope;·len:·130,·SHA:·14ff5e4f8c28effd048f269d2f561cbcb8224d70aab7e336915dfb9030e6fa92·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 3375 | » ··</span><span·class="p"·data-group-id=" | 3375 | » ··</span><span·class="p"·data-group-id="4640323326-5">{</span><span·class="ss">cipher</span><span·class="p">,</span><span·class="p"·data-group-id="4640323326-6">[</span><span·class="p"·data-group-id="4640323326-7">{</span><span·class="ss">client2server</span><span·class="p">,</span><span·class="[·...·truncated·by·diffoscope;·len:·178,·SHA:·01d2ace5a7aa3f4127e9a894267e0771ef454da4e941ff5afb86d54e56ed2eea·...·]-7">}</span><span·class="p">,</span><span·class="w"> |
| 3376 | ··········</span><span·class="p"·data-group-id=" | 3376 | ··········</span><span·class="p"·data-group-id="4640323326-9">{</span><span·class="ss">server2client</span><span·class="p">,</span><span·class="p"·data-group-id="4640323326-10">[</span><span·class="ss">'aes128-cbc'</span><span·class="p">,</span><span·class="ss">'3des-cbc'</span><span·cla[·...·truncated·by·diffoscope;·len:·192,·SHA:·965f10b7b6808a0d2d81239970d996ff49b17e6b373c0135860f1bcfe97e99e0·...·]-5">}</span><span·class="p">,</span><span·class="w"> |
| 3377 | » ··</span><span·class="p"·data-group-id=" | 3377 | » ··</span><span·class="p"·data-group-id="4640323326-11">{</span><span·class="ss">mac</span><span·class="p">,</span><span·class="p"·data-group-id="4640323326-12">[</span><span·class="ss">'hmac-sha2-256'</span><span·class="p">,</span><span·class="ss">'hmac-sha1'</span><span·class="p[·...·truncated·by·diffoscope;·len:·81,·SHA:·6d98db6e8dd8bc1516f56176558b7af38d08658822df1df0b03047b6644f6676·...·]-11">}</span><span·class="p">,</span><span·class="w"> |
| 3378 | » ··</span><span·class="p"·data-group-id=" | 3378 | » ··</span><span·class="p"·data-group-id="4640323326-13">{</span><span·class="ss">compression</span><span·class="p">,</span><span·class="p"·data-group-id="4640323326-14">[</span><span·class="ss">none</span><span·class="p">,</span><span·class="ss">zlib</span><span·class="p"·data-group-id="464032332[·...·truncated·by·diffoscope;·len:·55,·SHA:·4ea4b85082f03c8458ebb085ebe33c09748bae0d26cd257c64548ea84133ba3a·...·]-13">}</span><span·class="w"> |
| 3379 | » ··</span><span·class="p"·data-group-id=" | 3379 | » ··</span><span·class="p"·data-group-id="4640323326-2">]</span><span·class="w"> |
| 3380 | » ··</span><span·class="p"·data-group-id=" | 3380 | » ··</span><span·class="p"·data-group-id="4640323326-1">}</span></code></pre><p>The·example·specifies·different·algorithms·in·the·two·directions·(client2server |
| 3381 | and·server2client),·for·cipher·but·specifies·the·same·algorithms·for·mac·and | 3381 | and·server2client),·for·cipher·but·specifies·the·same·algorithms·for·mac·and |
| 3382 | compression·in·both·directions.·The·kex·(key·exchange)·is·implicit·but | 3382 | compression·in·both·directions.·The·kex·(key·exchange)·is·implicit·but |
| 3383 | public_key·is·set·explicitly.</p><p>For·background·and·more·examples·see·the | 3383 | public_key·is·set·explicitly.</p><p>For·background·and·more·examples·see·the |
| 3384 | <a·href="configure_algos.html#introduction">User's·Guide</a>.</p><p>If·an·algorithm·name·occurs·more·than·once·in·a·list,·the·behaviour·is | 3384 | <a·href="configure_algos.html#introduction">User's·Guide</a>.</p><p>If·an·algorithm·name·occurs·more·than·once·in·a·list,·the·behaviour·is |
| 3385 | undefined.·The·tags·in·the·property·lists·are·also·assumed·to·occur·at·most·one | 3385 | undefined.·The·tags·in·the·property·lists·are·also·assumed·to·occur·at·most·one |
| 3386 | time.</p><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>Changing·the·values·can·make·a·connection·less·secure.·Do·not·change·unless | 3386 | time.</p><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>Changing·the·values·can·make·a·connection·less·secure.·Do·not·change·unless |
| 3387 | you·know·exactly·what·you·are·doing.·If·you·do·not·understand·the·values·then | 3387 | you·know·exactly·what·you·are·doing.·If·you·do·not·understand·the·values·then |
| Offset 5105, 29 lines modified | Offset 5105, 29 lines modified | ||
| 5105 | ·································StringOrString·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>()·|·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>()].</pre> | 5105 | ·································StringOrString·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>()·|·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>()].</pre> |
| 5106 | ······</div> | 5106 | ······</div> |
| 5107 | <p>hostkey_fingerprint([DigestType],·HostKey)·-> | 5107 | <p>hostkey_fingerprint([DigestType],·HostKey)·-> |
| 5108 | [string()]hostkey_fingerprint(DigestType,·HostKey)·->·string()</p><p>Calculates·a·ssh·fingerprint·from·a·public·host·key·as·openssh·does.</p><p>The·algorithm·in·<a·href="#hostkey_fingerprint/1"><code·class="inline">hostkey_fingerprint/1</code></a>·is·md5·to·be | 5108 | [string()]hostkey_fingerprint(DigestType,·HostKey)·->·string()</p><p>Calculates·a·ssh·fingerprint·from·a·public·host·key·as·openssh·does.</p><p>The·algorithm·in·<a·href="#hostkey_fingerprint/1"><code·class="inline">hostkey_fingerprint/1</code></a>·is·md5·to·be |
| 5109 | compatible·with·older·ssh-keygen·commands.·The·string·from·the·second·variant·is | 5109 | compatible·with·older·ssh-keygen·commands.·The·string·from·the·second·variant·is |
| 5110 | prepended·by·the·algorithm·name·in·uppercase·as·in·newer·ssh-keygen·commands.</p><p>Examples:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">2</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">hostkey_fingerprint</span><span·class="p"·data-group-id=" | 5110 | prepended·by·the·algorithm·name·in·uppercase·as·in·newer·ssh-keygen·commands.</p><p>Examples:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">2</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">hostkey_fingerprint</span><span·class="p"·data-group-id="4149930142-1">(</span><span·class="n">Key</span><span·class="p"·data-group-id="4149930142-1">)</span><span·class="p">.</span><span·class="w"> |
| 5111 | ·</span><span·class="s">"f5:64:a6:c1:5a:cb:9f:0a:10:46:a2:5c:3e:2f:57:84"</span><span·class="w"> | 5111 | ·</span><span·class="s">"f5:64:a6:c1:5a:cb:9f:0a:10:46:a2:5c:3e:2f:57:84"</span><span·class="w"> |
| 5112 | ·</span><span·class="mi">3</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">hostkey_fingerprint</span><span·class="p"·data-group-id=" | 5112 | ·</span><span·class="mi">3</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">hostkey_fingerprint</span><span·class="p"·data-group-id="4149930142-2">(</span><span·class="nb">md5</span><span·class="p">,</span><span·class="n">Key</span><span·class="p"·data-group-id="4149930142-2">)</span><span·class="p">.</span><span·class="w"> |
| 5113 | ·</span><span·class="s">"MD5:f5:64:a6:c1:5a:cb:9f:0a:10:46:a2:5c:3e:2f:57:84"</span><span·class="w"> | 5113 | ·</span><span·class="s">"MD5:f5:64:a6:c1:5a:cb:9f:0a:10:46:a2:5c:3e:2f:57:84"</span><span·class="w"> |
| 5114 | ·</span><span·class="mi">4</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">hostkey_fingerprint</span><span·class="p"·data-group-id=" | 5114 | ·</span><span·class="mi">4</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">hostkey_fingerprint</span><span·class="p"·data-group-id="4149930142-3">(</span><span·class="ss">sha</span><span·class="p">,</span><span·class="n">Key</span><span·class="p"·data-group-id="4149930142-3">)</span><span·class="p">.</span><span·class="w"> |
| 5115 | ·</span><span·class="s">"SHA1:bSLY/C4QXLDL/Iwmhyg0PGW9UbY"</span><span·class="w"> | 5115 | ·</span><span·class="s">"SHA1:bSLY/C4QXLDL/Iwmhyg0PGW9UbY"</span><span·class="w"> |
| 5116 | ·</span><span·class="mi">5</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">hostkey_fingerprint</span><span·class="p"·data-group-id=" | 5116 | ·</span><span·class="mi">5</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">hostkey_fingerprint</span><span·class="p"·data-group-id="4149930142-4">(</span><span·class="ss">sha256</span><span·class="p">,</span><span·class="n">Key</span><span·class="p"·data-group-id="4149930142-4">)</span><span·class="p">.</span><span·class="w"> |
| 5117 | ·</span><span·class="s">"SHA256:aZGXhabfbf4oxglxltItWeHU7ub3Dc31NcNw2cMJePQ"</span><span·class="w"> | 5117 | ·</span><span·class="s">"SHA256:aZGXhabfbf4oxglxltItWeHU7ub3Dc31NcNw2cMJePQ"</span><span·class="w"> |
| 5118 | ·</span><span·class="mi">6</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">hostkey_fingerprint</span><span·class="p"·data-group-id=" | 5118 | ·</span><span·class="mi">6</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">hostkey_fingerprint</span><span·class="p"·data-group-id="4149930142-5">(</span><span·class="p"·data-group-id="4149930142-6">[</span><span·class="ss">sha</span><span·class="p">,</span><span·class="ss">sha256</span><span·class="p"·data-group-id="4149930142-6">]</span><span·class="p">,</span><span·class="n">Key</sp[·...·truncated·by·diffoscope;·len:·44,·SHA:·d0084d3cd77f986cc639bff7122ece6a90406f3039cc24edcd02b18a6f7c5962·...·]-5">)</span><span·class="p">.</span><span·class="w"> |
| 5119 | ·</span><span·class="p"·data-group-id=" | 5119 | ·</span><span·class="p"·data-group-id="4149930142-7">[</span><span·class="s">"SHA1:bSLY/C4QXLDL/Iwmhyg0PGW9UbY"</span><span·class="p">,</span><span·class="w"> |
| 5120 | ··</span><span·class="s">"SHA256:aZGXhabfbf4oxglxltItWeHU7ub3Dc31NcNw2cMJePQ"</span><span·class="p"·data-group-id=" | 5120 | ··</span><span·class="s">"SHA256:aZGXhabfbf4oxglxltItWeHU7ub3Dc31NcNw2cMJePQ"</span><span·class="p"·data-group-id="4149930142-7">]</span></code></pre> |
| 5121 | ··</section> | 5121 | ··</section> |
| 5122 | </section> | 5122 | </section> |
| 5123 | <section·class="detail"·id="set_sock_opts/2"> | 5123 | <section·class="detail"·id="set_sock_opts/2"> |
| 5124 | ··<div·class="detail-header"> | 5124 | ··<div·class="detail-header"> |
| 5125 | ····<a·href="#set_sock_opts/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 5125 | ····<a·href="#set_sock_opts/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 5126 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 5126 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 131, 19 lines modified | Offset 131, 19 lines modified | ||
| 131 | <p>Callback·module·for·using·an·SSH·agent·instead·of·the·default·ssh_file·callback.</p><p>This·module·defines·a·callback·handler·for·the·communication·with·an | 131 | <p>Callback·module·for·using·an·SSH·agent·instead·of·the·default·ssh_file·callback.</p><p>This·module·defines·a·callback·handler·for·the·communication·with·an |
| 132 | <a·href="https://tools.ietf.org/html/draft-miller-ssh-agent-02">SSH·Agent</a>·and·can·be | 132 | <a·href="https://tools.ietf.org/html/draft-miller-ssh-agent-02">SSH·Agent</a>·and·can·be |
| 133 | used·to·replace·the·<a·href="ssh_file.html">default·callback</a>.·This·allows·to·issue | 133 | used·to·replace·the·<a·href="ssh_file.html">default·callback</a>.·This·allows·to·issue |
| 134 | signing·requests·to·an·agent·that·stores·SSH·private·keys·to·perform | 134 | signing·requests·to·an·agent·that·stores·SSH·private·keys·to·perform |
| 135 | authentication.</p><p>Ssh_agent·implements·the·<a·href="ssh_client_key_api.html"><code·class="inline">ssh_client_key_api</code></a>,·to·allow·it·to·be·used·by | 135 | authentication.</p><p>Ssh_agent·implements·the·<a·href="ssh_client_key_api.html"><code·class="inline">ssh_client_key_api</code></a>,·to·allow·it·to·be·used·by |
| 136 | setting·the·option·<a·href="ssh.html#t:key_cb_common_option/0"><code·class="inline">key_cb</code></a>·when·starting·a | 136 | setting·the·option·<a·href="ssh.html#t:key_cb_common_option/0"><code·class="inline">key_cb</code></a>·when·starting·a |
| 137 | client·(with·for·example·<a·href="ssh.html#connect/3">ssh:connect</a>, | 137 | client·(with·for·example·<a·href="ssh.html#connect/3">ssh:connect</a>, |
| 138 | <a·href="ssh.html#shell/1">ssh:shell</a>·).</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">······</span><span·class="p"·data-group-id=" | 138 | <a·href="ssh.html#shell/1">ssh:shell</a>·).</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">······</span><span·class="p"·data-group-id="4654156732-1">{</span><span·class="ss">key_cb</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4654156732-2">{</span><span·class="ss">ssh_agent</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-g[·...·truncated·by·diffoscope;·len:·178,·SHA:·8b41048516d9de94d6c38671c384d79088d4fd50c0284c9aa5f61342b024eaf4·...·]-1">}</span></code></pre><p>The·agent·communication·is·established·through·a·UNIX·domain·socket.·By·default, |
| 139 | the·socket·path·will·be·fetched·from·the·<code·class="inline">SSH_AUTH_SOCK</code>·environment·variable, | 139 | the·socket·path·will·be·fetched·from·the·<code·class="inline">SSH_AUTH_SOCK</code>·environment·variable, |
| 140 | which·is·the·default·socket·path·in·the·agent·implementation·of | 140 | which·is·the·default·socket·path·in·the·agent·implementation·of |
| 141 | <a·href="http://www.openssh.com">OpenSSH</a>.</p><p><a·href=""·id="SOCKET_PATH"></a>·In·order·to·set·a·different·socket·path·the·<code·class="inline">socket_path</code> | 141 | <a·href="http://www.openssh.com">OpenSSH</a>.</p><p><a·href=""·id="SOCKET_PATH"></a>·In·order·to·set·a·different·socket·path·the·<code·class="inline">socket_path</code> |
| 142 | option·can·be·set.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">······</span><span·class="p"·data-group-id=" | 142 | option·can·be·set.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">······</span><span·class="p"·data-group-id="8509491445-1">{</span><span·class="ss">key_cb</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8509491445-2">{</span><span·class="ss">ssh_agent</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-g[·...·truncated·by·diffoscope;·len:·399,·SHA:·813c1c7d67170cc01788818571808584c50734cac32624b6af8fba75d9d98cbd·...·]5-1">}</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>The·functions·are·<em>Callbacks</em>·for·the·SSH·app.·They·are·not·intended·to·be |
| 143 | called·from·the·user's·code!</p></section> | 143 | called·from·the·user's·code!</p></section> |
| 144 | ····</section> | 144 | ····</section> |
| 145 | </div> | 145 | </div> |
| 146 | ··<section·id="summary"·class="details-list"> | 146 | ··<section·id="summary"·class="details-list"> |
| 147 | ····<h1·class="section-heading"> | 147 | ····<h1·class="section-heading"> |
| Offset 136, 17 lines modified | Offset 136, 17 lines modified | ||
| 136 | user-interaction.</p><h2·id="using-the-erlang-ssh-terminal-client"·class="section-heading"> | 136 | user-interaction.</p><h2·id="using-the-erlang-ssh-terminal-client"·class="section-heading"> |
| 137 | ··<a·href="#using-the-erlang-ssh-terminal-client"·class="hover-link"> | 137 | ··<a·href="#using-the-erlang-ssh-terminal-client"·class="hover-link"> |
| 138 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 138 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 139 | ··</a> | 139 | ··</a> |
| 140 | ··<span·class="text">Using·the·Erlang·ssh·Terminal·Client</span> | 140 | ··<span·class="text">Using·the·Erlang·ssh·Terminal·Client</span> |
| 141 | </h2> | 141 | </h2> |
| 142 | <p>The·user·<code·class="inline">otptest</code>,·which·has·bash·as·default·shell,·uses·the·<a·href="ssh.html#shell/1"><code·class="inline">ssh:shell/1</code></a> | 142 | <p>The·user·<code·class="inline">otptest</code>,·which·has·bash·as·default·shell,·uses·the·<a·href="ssh.html#shell/1"><code·class="inline">ssh:shell/1</code></a> |
| 143 | client·to·connect·to·the·<strong>OpenSSH</strong>·daemon·running·on·a·host·called·<strong>ssh.example.com</strong>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 143 | client·to·connect·to·the·<strong>OpenSSH</strong>·daemon·running·on·a·host·called·<strong>ssh.example.com</strong>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="3992971855-1">(</span><span·class="p"·data-group-id="3992971855-1">)</span><span·class="p">.</span><span·class="w"> |
| 144 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 144 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 145 | 2>·</span><span·class="p"·data-group-id=" | 145 | 2>·</span><span·class="p"·data-group-id="3992971855-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">S</span><span·class="p"·data-group-id="3992971855-2">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class[·...·truncated·by·diffoscope;·len:·213,·SHA:·98a95992a4caafb3fcd855e169d0039a080aab1f46b6194a7b80a438da9e476c·...·]-3">)</span><span·class="p">.</span><span·class="w"> |
| 146 | </span><span·class="ss">otptest@ssh</span><span·class="p">.</span><span·class="ss">example</span><span·class="p">.</span><span·class="nc">com</span><span·class="p">:</span><span·class="o">></span><span·class="w">·</span><span·class="ss">pwd</span><span·class="w"> | 146 | </span><span·class="ss">otptest@ssh</span><span·class="p">.</span><span·class="ss">example</span><span·class="p">.</span><span·class="nc">com</span><span·class="p">:</span><span·class="o">></span><span·class="w">·</span><span·class="ss">pwd</span><span·class="w"> |
| 147 | </span><span·class="o">/</span><span·class="ss">home</span><span·class="o">/</span><span·class="ss">otptest</span><span·class="w"> | 147 | </span><span·class="o">/</span><span·class="ss">home</span><span·class="o">/</span><span·class="ss">otptest</span><span·class="w"> |
| 148 | </span><span·class="ss">otptest@ssh</span><span·class="p">.</span><span·class="ss">example</span><span·class="p">.</span><span·class="nc">com</span><span·class="p">:</span><span·class="o">></span><span·class="w">·</span><span·class="nb">exit</span><span·class="w"> | 148 | </span><span·class="ss">otptest@ssh</span><span·class="p">.</span><span·class="ss">example</span><span·class="p">.</span><span·class="nc">com</span><span·class="p">:</span><span·class="o">></span><span·class="w">·</span><span·class="nb">exit</span><span·class="w"> |
| 149 | </span><span·class="ss">logout</span><span·class="w"> | 149 | </span><span·class="ss">logout</span><span·class="w"> |
| 150 | </span><span·class="mi">3</span><span·class="o">></span></code></pre><h2·id="running-an-erlang-ssh-daemon"·class="section-heading"> | 150 | </span><span·class="mi">3</span><span·class="o">></span></code></pre><h2·id="running-an-erlang-ssh-daemon"·class="section-heading"> |
| 151 | ··<a·href="#running-an-erlang-ssh-daemon"·class="hover-link"> | 151 | ··<a·href="#running-an-erlang-ssh-daemon"·class="hover-link"> |
| 152 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 152 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 157, 33 lines modified | Offset 157, 33 lines modified | ||
| 157 | directory·containing·a·host·key·file·and·it·defaults·to·<code·class="inline">/etc/ssh</code>.·For·details, | 157 | directory·containing·a·host·key·file·and·it·defaults·to·<code·class="inline">/etc/ssh</code>.·For·details, |
| 158 | see·Section·Configuration·in·<a·href="ssh_app.html">ssh</a>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Normally,·the·<code·class="inline">/etc/ssh</code>·directory·is·only·readable·by·root.</p></section><p>The·option·<a·href="ssh_file.html#t:user_dir_common_option/0"><code·class="inline">user_dir</code></a>·defaults·to | 158 | see·Section·Configuration·in·<a·href="ssh_app.html">ssh</a>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Normally,·the·<code·class="inline">/etc/ssh</code>·directory·is·only·readable·by·root.</p></section><p>The·option·<a·href="ssh_file.html#t:user_dir_common_option/0"><code·class="inline">user_dir</code></a>·defaults·to |
| 159 | directory·<code·class="inline">~/.ssh</code>.</p><p><em>Step·1.</em>·To·run·the·example·without·root·privileges,·generate·new·keys·and·host | 159 | directory·<code·class="inline">~/.ssh</code>.</p><p><em>Step·1.</em>·To·run·the·example·without·root·privileges,·generate·new·keys·and·host |
| 160 | keys:</p><pre><code·class="text">$bash>·ssh-keygen·-t·rsa·-f·/tmp/ssh_daemon/ssh_host_rsa_key | 160 | keys:</p><pre><code·class="text">$bash>·ssh-keygen·-t·rsa·-f·/tmp/ssh_daemon/ssh_host_rsa_key |
| 161 | [...] | 161 | [...] |
| 162 | $bash>·ssh-keygen·-t·rsa·-f·/tmp/otptest_user/.ssh/id_rsa | 162 | $bash>·ssh-keygen·-t·rsa·-f·/tmp/otptest_user/.ssh/id_rsa |
| 163 | [...]</code></pre><p><em>Step·2.</em>·Create·the·file·<code·class="inline">/tmp/otptest_user/.ssh/authorized_keys</code>·and·add·the | 163 | [...]</code></pre><p><em>Step·2.</em>·Create·the·file·<code·class="inline">/tmp/otptest_user/.ssh/authorized_keys</code>·and·add·the |
| 164 | content·of·<code·class="inline">/tmp/otptest_user/.ssh/id_rsa.pub</code>.</p><p><a·href=""·id="start-daemon-step3"></a></p><p><em>Step·3.</em>·Start·the·Erlang·<code·class="inline">ssh</code>·daemon:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 164 | content·of·<code·class="inline">/tmp/otptest_user/.ssh/id_rsa.pub</code>.</p><p><a·href=""·id="start-daemon-step3"></a></p><p><em>Step·3.</em>·Start·the·Erlang·<code·class="inline">ssh</code>·daemon:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="2642410760-1">(</span><span·class="p"·data-group-id="2642410760-1">)</span><span·class="p">.</span><span·class="w"> |
| 165 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 165 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 166 | 2>·</span><span·class="p"·data-group-id=" | 166 | 2>·</span><span·class="p"·data-group-id="2642410760-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Sshd</span><span·class="p"·data-group-id="2642410760-2">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·cl[·...·truncated·by·diffoscope;·len:·481,·SHA:·a9e3fd70a242ab34a580add24058114d9aa4556f80732bb57ba21a130efd3dab·...·]-5">}</span><span·class="p">,</span><span·class="w"> |
| 167 | ··································</span><span·class="p"·data-group-id=" | 167 | ··································</span><span·class="p"·data-group-id="2642410760-6">{</span><span·class="ss">user_dir</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"/tmp/otptest_user/.ssh"</span><span·class="p"·data-group-id="2642410760-6">}</span><span·class="p"·data-group-id="2642410760-4"[·...·truncated·by·diffoscope;·len:·50,·SHA:·6a959d36456126b1b3fb69f8eaa9e55107c6e08b59075004838c736c0fe8733b·...·]-3">)</span><span·class="p">.</span><span·class="w"> |
| 168 | </span><span·class="p"·data-group-id=" | 168 | </span><span·class="p"·data-group-id="2642410760-7">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.54</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="2642410760-7">}</span><span·class="w"> |
| 169 | </span><span·class="mi">3</span><span·class="o">></span></code></pre><p><em>Step·4.</em>·Use·the·<strong>OpenSSH</strong>·client·from·a·shell·to·connect·to·the·Erlang·<code·class="inline">ssh</code> | 169 | </span><span·class="mi">3</span><span·class="o">></span></code></pre><p><em>Step·4.</em>·Use·the·<strong>OpenSSH</strong>·client·from·a·shell·to·connect·to·the·Erlang·<code·class="inline">ssh</code> |
| 170 | daemon:</p><pre><code·class="text">$bash>·ssh·ssh.example.com·-p·8989··-i·/tmp/otptest_user/.ssh/id_rsa·\ | 170 | daemon:</p><pre><code·class="text">$bash>·ssh·ssh.example.com·-p·8989··-i·/tmp/otptest_user/.ssh/id_rsa·\ |
| 171 | ··················-o·UserKnownHostsFile=/tmp/otptest_user/.ssh/known_hosts | 171 | ··················-o·UserKnownHostsFile=/tmp/otptest_user/.ssh/known_hosts |
| 172 | The·authenticity·of·host·'ssh.example.com'·can't·be·established. | 172 | The·authenticity·of·host·'ssh.example.com'·can't·be·established. |
| 173 | RSA·key·fingerprint·is·14:81:80:50:b1:1f:57:dd:93:a8:2d:2f:dd:90:ae:a8. | 173 | RSA·key·fingerprint·is·14:81:80:50:b1:1f:57:dd:93:a8:2d:2f:dd:90:ae:a8. |
| 174 | Are·you·sure·you·want·to·continue·connecting·(yes/no)?·yes | 174 | Are·you·sure·you·want·to·continue·connecting·(yes/no)?·yes |
| 175 | Warning:·Permanently·added·'ssh.example.com'·(RSA)·to·the·list·of·known·hosts. | 175 | Warning:·Permanently·added·'ssh.example.com'·(RSA)·to·the·list·of·known·hosts. |
| 176 | Eshell·V5.10··(abort·with·^G) | 176 | Eshell·V5.10··(abort·with·^G) |
| 177 | 1></code></pre><p>There·are·two·ways·of·shutting·down·an·<code·class="inline">ssh</code>·daemon,·see·<em>Step·5a</em>·and·<em>Step | 177 | 1></code></pre><p>There·are·two·ways·of·shutting·down·an·<code·class="inline">ssh</code>·daemon,·see·<em>Step·5a</em>·and·<em>Step |
| 178 | 5b</em>.</p><p><em>Step·5a.</em>·Shut·down·the·Erlang·<code·class="inline">ssh</code>·daemon·so·that·it·stops·the·listener·but | 178 | 5b</em>.</p><p><em>Step·5a.</em>·Shut·down·the·Erlang·<code·class="inline">ssh</code>·daemon·so·that·it·stops·the·listener·but |
| 179 | leaves·existing·connections,·started·by·the·listener,·operational:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">stop_listener</span><span·class="p"·data-group-id=" | 179 | leaves·existing·connections,·started·by·the·listener,·operational:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">stop_listener</span><span·class="p"·data-group-id="0401832514-1">(</span><span·class="n">Sshd</span><span·class="p"·data-group-id="0401832514-1">)</span><span·class="p">.</span><span·class="w"> |
| 180 | </span><span·class="ss">ok</span><span·class="w"> | 180 | </span><span·class="ss">ok</span><span·class="w"> |
| 181 | </span><span·class="mi">4</span><span·class="o">></span></code></pre><p><em>Step·5b.</em>·Shut·down·the·Erlang·<code·class="inline">ssh</code>·daemon·so·that·it·stops·the·listener·and | 181 | </span><span·class="mi">4</span><span·class="o">></span></code></pre><p><em>Step·5b.</em>·Shut·down·the·Erlang·<code·class="inline">ssh</code>·daemon·so·that·it·stops·the·listener·and |
| 182 | all·connections·started·by·the·listener:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">stop_daemon</span><span·class="p"·data-group-id=" | 182 | all·connections·started·by·the·listener:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">stop_daemon</span><span·class="p"·data-group-id="2478043275-1">(</span><span·class="n">Sshd</span><span·class="p"·data-group-id="2478043275-1">)</span><span·class="p">.</span><span·class="w"> |
| 183 | </span><span·class="ss">ok</span><span·class="w"> | 183 | </span><span·class="ss">ok</span><span·class="w"> |
| 184 | </span><span·class="mi">4</span><span·class="o">></span></code></pre><h2·id="one-time-execution"·class="section-heading"> | 184 | </span><span·class="mi">4</span><span·class="o">></span></code></pre><h2·id="one-time-execution"·class="section-heading"> |
| 185 | ··<a·href="#one-time-execution"·class="hover-link"> | 185 | ··<a·href="#one-time-execution"·class="hover-link"> |
| 186 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 186 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 187 | ··</a> | 187 | ··</a> |
| 188 | ··<span·class="text">One-Time·Execution</span> | 188 | ··<span·class="text">One-Time·Execution</span> |
| 189 | </h2> | 189 | </h2> |
| Offset 191, 74 lines modified | Offset 191, 74 lines modified | ||
| 191 | ··<a·href="#erlang-client-contacting-os-standard-ssh-server"·class="hover-link"> | 191 | ··<a·href="#erlang-client-contacting-os-standard-ssh-server"·class="hover-link"> |
| 192 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 192 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 193 | ··</a> | 193 | ··</a> |
| 194 | ··<span·class="text">Erlang·client·contacting·OS·standard·ssh·server</span> | 194 | ··<span·class="text">Erlang·client·contacting·OS·standard·ssh·server</span> |
| 195 | </h3> | 195 | </h3> |
| 196 | <p>In·the·following·example,·the·Erlang·shell·is·the·client·process·that·receives | 196 | <p>In·the·following·example,·the·Erlang·shell·is·the·client·process·that·receives |
| 197 | the·channel·replies·as·Erlang·messages.</p><p>Do·an·one-time·execution·of·a·remote·OS·command·("pwd")·over·<code·class="inline">ssh</code>·to·the·ssh | 197 | the·channel·replies·as·Erlang·messages.</p><p>Do·an·one-time·execution·of·a·remote·OS·command·("pwd")·over·<code·class="inline">ssh</code>·to·the·ssh |
| 198 | server·of·the·OS·at·the·host·"ssh.example.com":</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 198 | server·of·the·OS·at·the·host·"ssh.example.com":</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="7837345595-1">(</span><span·class="p"·data-group-id="7837345595-1">)</span><span·class="p">.</span><span·class="w"> |
| 199 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 199 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 200 | 2>·</span><span·class="p"·data-group-id=" | 200 | 2>·</span><span·class="p"·data-group-id="7837345595-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ConnectionRef</span><span·class="p"·data-group-id="7837345595-2">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span[·...·truncated·by·diffoscope;·len:·455,·SHA:·671f6dceca7fa54317a1c4aeb8a0289d356fbd274d747179123c7120531c81c3·...·]-3">)</span><span·class="p">.</span><span·class="w"> |
| 201 | </span><span·class="p"·data-group-id=" | 201 | </span><span·class="p"·data-group-id="7837345595-5">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.57</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="7837345595-5">}</span><span·class="gp·unselectable"> |
| 202 | 3>·</span><span·class="p"·data-group-id=" | 202 | 3>·</span><span·class="p"·data-group-id="7837345595-6">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ChannelId</span><span·class="p"·data-group-id="7837345595-6">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><sp[·...·truncated·by·diffoscope;·len:·308,·SHA:·6be18d0cf4ba91d78c0045bc13e33fe4c28827ea581392093410f8b8d9b73b79·...·]-7">)</span><span·class="p">.</span><span·class="w"> |
| 203 | </span><span·class="p"·data-group-id=" | 203 | </span><span·class="p"·data-group-id="7837345595-8">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="mi">0</span><span·class="p"·data-group-id="7837345595-8">}</span><span·class="gp·unselectable"> |
| 204 | 4>·</span><span·class="ss">success</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ssh_connection</span><span·class="p">:</span><span·class="nf">exec</span><span·class="p"·data-group-id=" | 204 | 4>·</span><span·class="ss">success</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ssh_connection</span><span·class="p">:</span><span·class="nf">exec</span><span·class="p"·data-group-id="7837345595-9">(</span><span·class="n">ConnectionRef</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ChannelId</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"pwd"</span><span·class="p">,</span><span·cl[·...·truncated·by·diffoscope;·len:·89,·SHA:·0fa053f935cdac9ded6ec593fb473704a0828fed9daee1555c5013d077b6b04d·...·]-9">)</span><span·class="p">.</span><span·class="gp·unselectable"> |
| 205 | 5>·</span><span·class="nf">flush</span><span·class="p"·data-group-id=" | 205 | 5>·</span><span·class="nf">flush</span><span·class="p"·data-group-id="7837345595-10">(</span><span·class="p"·data-group-id="7837345595-10">)</span><span·class="p">.</span><span·class="w">·</span><span·class="c1">%·Get·all·pending·messages.·NOTE:·ordering·may·vary!</span><span·class="w"> |
| 206 | </span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="p"·data-group-id=" | 206 | </span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="p"·data-group-id="7837345595-11">{</span><span·class="ss">ssh_cm</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.57</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="p"·data-gro[·...·truncated·by·diffoscope;·len:·447,·SHA:·535249579bf91756df4d80b779928f35b876574c50e9b4241efa4867a2123b9a·...·]-11">}</span><span·class="w"> |
| 207 | </span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="p"·data-group-id=" | 207 | </span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="p"·data-group-id="7837345595-14">{</span><span·class="ss">ssh_cm</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.57</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="p"·data-gro[·...·truncated·by·diffoscope;·len:·201,·SHA:·476104f43f7a8e686372f5dca53498c66213db1709a0748d90e5b7c667bcbeda·...·]-14">}</span><span·class="w"> |
| 208 | </span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="p"·data-group-id=" | 208 | </span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="p"·data-group-id="7837345595-16">{</span><span·class="ss">ssh_cm</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.57</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="p"·data-gro[·...·truncated·by·diffoscope;·len:·258,·SHA:·f8699a89d0fd31e90440bcfc6d3a1f9208b7c0a6d088b18c768029a9135c46a1·...·]-16">}</span><span·class="w"> |
| 209 | </span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="p"·data-group-id=" | 209 | </span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="p"·data-group-id="7837345595-18">{</span><span·class="ss">ssh_cm</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.57</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="p"·data-gro[·...·truncated·by·diffoscope;·len:·204,·SHA:·57702c4a1a3187cd92d1978c320df7e509a45567ffcc808e8c84564fbdafab76·...·]-18">}</span><span·class="w"> |
| 210 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 210 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 211 | 6>·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">connection_info</span><span·class="p"·data-group-id=" | 211 | 6>·</span><span·class="nc">ssh</span><span·class="p">:</span><span·class="nf">connection_info</span><span·class="p"·data-group-id="7837345595-20">(</span><span·class="n">ConnectionRef</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">channels</span><span·class="p"·data-group-id="7837345595-20">)</span><span·class="p">.</span><span·class="w"> |
| 212 | </span><span·class="p"·data-group-id=" | 212 | </span><span·class="p"·data-group-id="7837345595-21">{</span><span·class="ss">channels</span><span·class="p">,</span><span·class="p"·data-group-id="7837345595-22">[</span><span·class="p"·data-group-id="7837345595-22">]</span><span·class="p"·data-group-id="7837345595-21">}</span><span·class="w"> |
| 213 | </span><span·class="mi">7</span><span·class="o">></span></code></pre><p>See·<a·href="ssh_connection.html"><code·class="inline">ssh_connection</code></a>·and·<a·href="ssh_connection.html#exec/4"><code·class="inline">ssh_connection:exec/4</code></a>·for·finding·documentation·of | 213 | </span><span·class="mi">7</span><span·class="o">></span></code></pre><p>See·<a·href="ssh_connection.html"><code·class="inline">ssh_connection</code></a>·and·<a·href="ssh_connection.html#exec/4"><code·class="inline">ssh_connection:exec/4</code></a>·for·finding·documentation·of |
| 214 | the·channel·messages.</p><p>To·collect·the·channel·messages·in·a·program,·use·<code·class="inline">receive...end</code>·instead·of | 214 | the·channel·messages.</p><p>To·collect·the·channel·messages·in·a·program,·use·<code·class="inline">receive...end</code>·instead·of |
| 215 | <code·class="inline">flush/1</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">5>·</span><span·class="k">receive</span><span·class="gp·unselectable"> | 215 | <code·class="inline">flush/1</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">5>·</span><span·class="k">receive</span><span·class="gp·unselectable"> |
| 216 | 5>·</span><span·class="w">····</span><span·class="p"·data-group-id=" | 216 | 5>·</span><span·class="w">····</span><span·class="p"·data-group-id="6626534013-1">{</span><span·class="ss">ssh_cm</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ConnectionRef</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6626534013-2">{</span><span·class="ss">da[·...·truncated·by·diffoscope;·len:·335,·SHA:·7cde5673c472162d20136d0ef33daf6fde564bcf84ea252924bc031d9492a743·...·]-1">}</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="n">Type</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="p">-></span><span·class="gp·unselectable"> |
| 217 | 5>·</span><span·class="w">········</span><span·class="p"·data-group-id=" | 217 | 5>·</span><span·class="w">········</span><span·class="p"·data-group-id="6626534013-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">Result</span><span·class="p"·data-group-id="6626534013-3">}</span><span·class="gp·unselectable"> |
| 218 | 5>·</span><span·class="w">····</span><span·class="p"·data-group-id=" | 218 | 5>·</span><span·class="w">····</span><span·class="p"·data-group-id="6626534013-4">{</span><span·class="ss">ssh_cm</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ConnectionRef</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6626534013-5">{</span><span·class="ss">da[·...·truncated·by·diffoscope;·len:·335,·SHA:·d0dbe58565864a05839a9b84f6a3e3d78b4ca8b627830fb8057a7f8915a43b3f·...·]-4">}</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="n">Type</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="mi">1</span><span·class="w">·</span><span·class="p">-></span><span·class="gp·unselectable"> |
| 219 | 5>·</span><span·class="w">········</span><span·class="p"·data-group-id=" | 219 | 5>·</span><span·class="w">········</span><span·class="p"·data-group-id="6626534013-6">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="n">Result</span><span·class="p"·data-group-id="6626534013-6">}</span><span·class="gp·unselectable"> |
| 220 | 5>·</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 220 | 5>·</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 221 | </span><span·class="p"·data-group-id=" | 221 | </span><span·class="p"·data-group-id="6626534013-7">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="6626534013-8"><<</span><span·class="s">"/home/otptest\n"</span><span·class="p"·data-group-id="6626534013-8">>></span><span·class="p[·...·truncated·by·diffoscope;·len:·27,·SHA:·948f556b940f559e81ff75612675ff353997b5322473d7517f561dea85cc350a·...·]-7">}</span><span·class="w"> |
| 222 | </span><span·class="mi">6</span><span·class="o">></span></code></pre><p>Note·that·only·the·exec·channel·is·closed·after·the·one-time·execution.·The | 222 | </span><span·class="mi">6</span><span·class="o">></span></code></pre><p>Note·that·only·the·exec·channel·is·closed·after·the·one-time·execution.·The |
| 223 | connection·is·still·up·and·can·handle·previously·opened·channels.·It·is·also | 223 | connection·is·still·up·and·can·handle·previously·opened·channels.·It·is·also |
| 224 | possible·to·open·a·new·channel:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·try·to·open·a·new·channel·to·check·if·the·ConnectionRef·is·still·open</span><span·class="gp·unselectable"> | 224 | possible·to·open·a·new·channel:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·try·to·open·a·new·channel·to·check·if·the·ConnectionRef·is·still·open</span><span·class="gp·unselectable"> |
| 225 | 7>·</span><span·class="p"·data-group-id=" | 225 | 7>·</span><span·class="p"·data-group-id="9080919106-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">NewChannelId</span><span·class="p"·data-group-id="9080919106-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span>[·...·truncated·by·diffoscope;·len:·311,·SHA:·9a9bbb8e0d05b68f6bf3c7070922e3d862f13df9b5d7d98e207b61aa36eaf5f1·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 226 | </span><span·class="p"·data-group-id=" | 226 | </span><span·class="p"·data-group-id="9080919106-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="9080919106-3">}</span><span·class="w"> |
| 227 | </span><span·class="mi">8</span><span·class="o">></span></code></pre><p>To·close·the·connection,·call·the·function | 227 | </span><span·class="mi">8</span><span·class="o">></span></code></pre><p>To·close·the·connection,·call·the·function |
| 228 | <a·href="ssh.html#close/1"><code·class="inline">ssh:close(ConnectionRef)</code></a>.·As·an·alternative,·set·the·option | 228 | <a·href="ssh.html#close/1"><code·class="inline">ssh:close(ConnectionRef)</code></a>.·As·an·alternative,·set·the·option |
| 229 | <a·href="ssh.html#t:max_idle_time_common_option/0"><code·class="inline">{idle_time,·1}</code></a>·when·opening·the | 229 | <a·href="ssh.html#t:max_idle_time_common_option/0"><code·class="inline">{idle_time,·1}</code></a>·when·opening·the |
| 230 | connection.·This·will·cause·the·connection·to·be·closed·automatically·when·there | 230 | connection.·This·will·cause·the·connection·to·be·closed·automatically·when·there |
| 231 | are·no·channels·open·for·the·specified·time·period,·in·this·case·1·ms.</p><h3·id="os-standard-client-and-erlang-daemon-server"·class="section-heading"> | 231 | are·no·channels·open·for·the·specified·time·period,·in·this·case·1·ms.</p><h3·id="os-standard-client-and-erlang-daemon-server"·class="section-heading"> |
| 232 | ··<a·href="#os-standard-client-and-erlang-daemon-server"·class="hover-link"> | 232 | ··<a·href="#os-standard-client-and-erlang-daemon-server"·class="hover-link"> |
| 233 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 233 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 234 | ··</a> | 234 | ··</a> |
| 235 | ··<span·class="text">OS·standard·client·and·Erlang·daemon·(server)</span> | 235 | ··<span·class="text">OS·standard·client·and·Erlang·daemon·(server)</span> |
| 236 | </h3> | 236 | </h3> |
| 237 | <p>An·Erlang·SSH·daemon·could·be·called·for·one-time·execution·of·a·"command".·The | 237 | <p>An·Erlang·SSH·daemon·could·be·called·for·one-time·execution·of·a·"command".·The |
| 238 | "command"·must·be·as·if·entered·into·the·erlang·shell,·that·is·a·sequence·of | 238 | "command"·must·be·as·if·entered·into·the·erlang·shell,·that·is·a·sequence·of |
| 239 | Erlang·<a·href="../../../../doc/system/expressions.html">expressions</a>·ended·by·a·period·(.).·Variables | 239 | Erlang·<a·href="../../../../doc/system/expressions.html">expressions</a>·ended·by·a·period·(.).·Variables |
| 240 | bound·in·that·sequence·will·keep·their·bindings·throughout·the·expression | 240 | bound·in·that·sequence·will·keep·their·bindings·throughout·the·expression |
| 241 | sequence.·The·bindings·are·disposed·when·the·result·is·returned.</p><p>Here·is·an·example·of·a·suitable·expression·sequence:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">A</span><span·class="o">=</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">B</span><span·class="o">=</span><span·class="mi">2</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">3</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="p"·data-group-id=" | 241 | sequence.·The·bindings·are·disposed·when·the·result·is·returned.</p><p>Here·is·an·example·of·a·suitable·expression·sequence:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">A</span><span·class="o">=</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">B</span><span·class="o">=</span><span·class="mi">2</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">3</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="p"·data-group-id="9701629606-1">(</span><span·class="n">A</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="n">B</span><span·class="p"·data-group-id="9701629606-1">)</span><span·class="p">.</span></code></pre><p>It·evaluates·to·<code·class="inline">true</code>·if·submitted·to·the·Erlang·daemon·started·in |
| 242 | <a·href="using_ssh.html#start-daemon-step3">Step·3</a>·above:</p><pre><code·class="text">$bash>·ssh·ssh.example.com·-p·8989·"A=1,·B=2,·3·==·(A·+·B)." | 242 | <a·href="using_ssh.html#start-daemon-step3">Step·3</a>·above:</p><pre><code·class="text">$bash>·ssh·ssh.example.com·-p·8989·"A=1,·B=2,·3·==·(A·+·B)." |
| 243 | true | 243 | true |
| 244 | $bash></code></pre><p>The·same·example·but·now·using·the·Erlang·ssh·client·to·contact·the·Erlang | 244 | $bash></code></pre><p>The·same·example·but·now·using·the·Erlang·ssh·client·to·contact·the·Erlang |
| 245 | server:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="p"·data-group-id=" | 245 | server:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="p"·data-group-id="4983334173-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ConnectionRef</span><span·class="p"·data-group-id="4983334173-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span[·...·truncated·by·diffoscope;·len:·457,·SHA:·e96c3b264ced163a6d7d0ef3e7ddbbb70bb8f94fd940b7e8bd60b91336d305e4·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 246 | </span><span·class="p"·data-group-id=" | 246 | </span><span·class="p"·data-group-id="4983334173-4">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.216</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="4983334173-4">}</span><span·class="gp·unselectable"> |
| 247 | 2>·</span><span·class="p"·data-group-id=" | 247 | 2>·</span><span·class="p"·data-group-id="4983334173-5">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ChannelId</span><span·class="p"·data-group-id="4983334173-5">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><sp[·...·truncated·by·diffoscope;·len:·308,·SHA:·2c55c68e30577a64ae76a043ec9d29470e946d0fa579b4a05622576af32ef011·...·]-6">)</span><span·class="p">.</span><span·class="w"> |
| 248 | </span><span·class="p"·data-group-id=" | 248 | </span><span·class="p"·data-group-id="4983334173-7">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="mi">0</span><span·class="p"·data-group-id="4983334173-7">}</span><span·class="gp·unselectable"> |
| 249 | 3>·</span><span·class="ss">success</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ssh_connection</span><span·class="p">:</span><span·class="nf">exec</span><span·class="p"·data-group-id=" | 249 | 3>·</span><span·class="ss">success</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ssh_connection</span><span·class="p">:</span><span·class="nf">exec</span><span·class="p"·data-group-id="4983334173-8">(</span><span·class="n">ConnectionRef</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ChannelId</span><span·class="p">,</span><span·class="w"> |
| 250 | ·································</span><span·class="s">"A=1,·B=2,·3·==·(A·+·B)."</span><span·class="p">,</span><span·class="w"> | 250 | ·································</span><span·class="s">"A=1,·B=2,·3·==·(A·+·B)."</span><span·class="p">,</span><span·class="w"> |
| 251 | ·································</span><span·class="ss">infinity</span><span·class="p"·data-group-id=" | 251 | ·································</span><span·class="ss">infinity</span><span·class="p"·data-group-id="4983334173-8">)</span><span·class="p">.</span><span·class="w"> |
| 252 | </span><span·class="ss">success</span><span·class="gp·unselectable"> | 252 | </span><span·class="ss">success</span><span·class="gp·unselectable"> |
| 253 | 4>·</span><span·class="nf">flush</span><span·class="p"·data-group-id=" | 253 | 4>·</span><span·class="nf">flush</span><span·class="p"·data-group-id="4983334173-9">(</span><span·class="p"·data-group-id="4983334173-9">)</span><span·class="p">.</span><span·class="w"> |
| 254 | </span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="p"·data-group-id=" | 254 | </span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="p"·data-group-id="4983334173-10">{</span><span·class="ss">ssh_cm</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.216</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·437,·SHA:·8f8ad13c9cd5f6d6335e33f96516764033b4342c8b0c7e89d7708635f948ffd4·...·]-10">}</span><span·class="w"> |
| 255 | </span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="p"·data-group-id=" | 255 | </span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="p"·data-group-id="4983334173-13">{</span><span·class="ss">ssh_cm</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.216</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·259,·SHA:·5d7507a28cd11f304b16b030c79eee3e8fe4530d75554ae06e63db55588f967b·...·]-13">}</span><span·class="w"> |
| 256 | </span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="p"·data-group-id=" | 256 | </span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="p"·data-group-id="4983334173-15">{</span><span·class="ss">ssh_cm</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.216</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·202,·SHA:·22289fa051a83a3788c4ecbae4f7d061062885e457316bba89618e6ab4ca7261·...·]-15">}</span><span·class="w"> |
| 257 | </span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="p"·data-group-id=" | 257 | </span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="p"·data-group-id="4983334173-17">{</span><span·class="ss">ssh_cm</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.216</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p">,</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·205,·SHA:·497b0df149f74f9cee276624fe3a940bb3392a706c8ee2c568226fbc42fb6715·...·]-17">}</span><span·class="w"> |
| 258 | </span><span·class="ss">ok</span><span·class="w"> | 258 | </span><span·class="ss">ok</span><span·class="w"> |
| 259 | </span><span·class="mi">5</span><span·class="o">></span></code></pre><p>Note·that·Erlang·shell·specific·functions·and·control·sequences·like·for·example | 259 | </span><span·class="mi">5</span><span·class="o">></span></code></pre><p>Note·that·Erlang·shell·specific·functions·and·control·sequences·like·for·example |
| 260 | <code·class="inline">h().</code>·are·not·supported.</p><h3·id="i-o-from-a-function-called-in-an-erlang-ssh-daemon"·class="section-heading"> | 260 | <code·class="inline">h().</code>·are·not·supported.</p><h3·id="i-o-from-a-function-called-in-an-erlang-ssh-daemon"·class="section-heading"> |
| 261 | ··<a·href="#i-o-from-a-function-called-in-an-erlang-ssh-daemon"·class="hover-link"> | 261 | ··<a·href="#i-o-from-a-function-called-in-an-erlang-ssh-daemon"·class="hover-link"> |
| 262 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 262 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 263 | ··</a> | 263 | ··</a> |
| 264 | ··<span·class="text">I/O·from·a·function·called·in·an·Erlang·ssh·daemon</span> | 264 | ··<span·class="text">I/O·from·a·function·called·in·an·Erlang·ssh·daemon</span> |
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| 127 | ··</h1> | 127 | ··</h1> |
| 128 | ····<section·id="moduledoc"> | 128 | ····<section·id="moduledoc"> |
| 129 | <p>Interface·functions·for·TLS·(Transport·Layer·Security) | 129 | <p>Interface·functions·for·TLS·(Transport·Layer·Security) |
| 130 | and·DTLS·(Datagram·Transport·Layer·Security).</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>The·application's·name·is·still·SSL·because·the·first·versions·of·the | 130 | and·DTLS·(Datagram·Transport·Layer·Security).</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>The·application's·name·is·still·SSL·because·the·first·versions·of·the |
| 131 | TLS·protocol·were·named·SSL·(Secure·Socket·Layer).·However,·no·version | 131 | TLS·protocol·were·named·SSL·(Secure·Socket·Layer).·However,·no·version |
| 132 | of·the·old·SSL·protocol·is·supported·by·this·application.</p></section><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ssl</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="9760596112-1">(</span><span·class="p"·data-group-id="9760596112-1">)</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">ssl</span><span·class="p">:</span><span·class="nf">connect</span><span·class="p"·data-group-id="9760596112-2">(</span><span·class="s">"google.com"</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">443</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9760596112-3">[</span><span·class="p"·data-group-id="9760596112-4">{</span><span·class="ss">verify</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">verify_peer</span><span·class="p"·data-group-id="9760596112-4">}</span><span·class="p">,</span><span·class="w"> | ||
| 133 | ····</span><span·class="p"·data-group-id="9760596112-5">{</span><span·class="ss">cacerts</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">public_key</span><span·class="p">:</span><span·class="nf">cacerts_get</span><span·class="p"·data-group-id="9760596112-6">(</span><span·class="p"·data-group-id="9760596112-6">)</span><span·class="p"·data-group-id="9760596112-5">}</span><span·class="p"·data-group-id="9760596112-3">]</span><span·class="p"·data-group-id="9760596112-2">)</span><span·class="p">.</span><span·class="w"> | ||
| 134 | 132 | of·the·old·SSL·protocol·is·supported·by·this·application.</p></section><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ssl</span><span·class="p">:</span><span·class="nf">start</span[·...·truncated·by·diffoscope;·len:·770,·SHA:·e428121eae7f473bf67ca5e4bba3aab967a615b64886ba1f4e0c24a1fd2db762·...·] | |
| 133 | ····</span><span·class="p"·data-group-id="3917668499-5">{</span><span·class="ss">cacerts</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">public_key</span><span·class="p">:</span><span·class="nf">cacerts_get</span><span·class="p"·data-group-id="3917668499-6">(</span><span·class="p"·data-group-id="3917668499-6">)</span><span·class="p"·data-group-id="3917668499-5">}</span><span·class="p"·data-group-id="3917668499-3">]</span><span·class="p"·data-group-id="3917668499-2">)</span><span·class="p">.</span><span·class="w"> | ||
| 134 | </span><span·class="p"·data-group-id="3917668499-7">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="3917668499-8">{</span><span·class="ss">sslsocket</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3917668499-9">[</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="3917668499-9">]</span><span·class="p"·data-group-id="3917668499-8">}</span><span·class="p"·data-group-id="3917668499-7">}</span></code></pre><p>See·<a·href="using_ssl.html">Examples</a>·for·detailed·usage·and·more·examples·of | ||
| 135 | this·API.</p><p>Special·Erlang·node·configuration·for·the·application·can·be·found·in | 135 | this·API.</p><p>Special·Erlang·node·configuration·for·the·application·can·be·found·in |
| 136 | <a·href="ssl_app.html">SSL·Application</a>.</p> | 136 | <a·href="ssl_app.html">SSL·Application</a>.</p> |
| 137 | ····</section> | 137 | ····</section> |
| 138 | </div> | 138 | </div> |
| 139 | ··<section·id="summary"·class="details-list"> | 139 | ··<section·id="summary"·class="details-list"> |
| Offset 2465, 34 lines modified | Offset 2465, 34 lines modified | ||
| 2465 | from·the·cipher·suite.</p><p>In·TLS-1.2·a·somewhat·more·explicit·negotiation·is·made·possible·using·a·list·of | 2465 | from·the·cipher·suite.</p><p>In·TLS-1.2·a·somewhat·more·explicit·negotiation·is·made·possible·using·a·list·of |
| 2466 | <code·class="inline">{HashAlgo,·SignAlgo}</code>·tuples.</p><p>In·TLS-1.3,·these·algorithm·pairs·are·replaced·by·<a·href="#t:sign_scheme/0">signature | 2466 | <code·class="inline">{HashAlgo,·SignAlgo}</code>·tuples.</p><p>In·TLS-1.3,·these·algorithm·pairs·are·replaced·by·<a·href="#t:sign_scheme/0">signature |
| 2467 | schemes</a>·that·are·completely·decoupled·from·the | 2467 | schemes</a>·that·are·completely·decoupled·from·the |
| 2468 | cipher·suite.</p><p>Signature·algorithms·used·for·certificates·can·be·overridden·by·the | 2468 | cipher·suite.</p><p>Signature·algorithms·used·for·certificates·can·be·overridden·by·the |
| 2469 | <a·href="#t:sign_scheme/0">signature·schemes</a>·supplied·by·the | 2469 | <a·href="#t:sign_scheme/0">signature·schemes</a>·supplied·by·the |
| 2470 | <code·class="inline">signature_algs_cert</code>·option.</p><p>The·TLS-1.2·default·is·<code·class="inline">Default_TLS_12_Alg_Pairs</code>·interleaved·with | 2470 | <code·class="inline">signature_algs_cert</code>·option.</p><p>The·TLS-1.2·default·is·<code·class="inline">Default_TLS_12_Alg_Pairs</code>·interleaved·with |
| 2471 | <code·class="inline">rsa_pss_schemes</code>·since·ssl-11.0·(Erlang/OTP·25).·<code·class="inline">pss_pss</code>·is | 2471 | <code·class="inline">rsa_pss_schemes</code>·since·ssl-11.0·(Erlang/OTP·25).·<code·class="inline">pss_pss</code>·is |
| 2472 | preferred·over·<code·class="inline">pss_rsae</code>,·which·in·turn·is·preferred·over·<code·class="inline">rsa</code>.</p><p>The·list·for·<code·class="inline">Default_TLS_12_Alg_Pairs</code>·is·defined·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 2472 | preferred·over·<code·class="inline">pss_rsae</code>,·which·in·turn·is·preferred·over·<code·class="inline">rsa</code>.</p><p>The·list·for·<code·class="inline">Default_TLS_12_Alg_Pairs</code>·is·defined·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="5769246018-1">[</span><span·class="w"> |
| 2473 | </span><span·class="p"·data-group-id=" | 2473 | </span><span·class="p"·data-group-id="5769246018-2">{</span><span·class="ss">sha512</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ecdsa</span><span·class="p"·data-group-id="5769246018-2">}</span><span·class="p">,</span><span·class="w"> |
| 2474 | </span><span·class="p"·data-group-id=" | 2474 | </span><span·class="p"·data-group-id="5769246018-3">{</span><span·class="ss">sha512</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">rsa</span><span·class="p"·data-group-id="5769246018-3">}</span><span·class="p">,</span><span·class="w"> |
| 2475 | </span><span·class="p"·data-group-id=" | 2475 | </span><span·class="p"·data-group-id="5769246018-4">{</span><span·class="ss">sha384</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ecdsa</span><span·class="p"·data-group-id="5769246018-4">}</span><span·class="p">,</span><span·class="w"> |
| 2476 | </span><span·class="p"·data-group-id=" | 2476 | </span><span·class="p"·data-group-id="5769246018-5">{</span><span·class="ss">sha384</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">rsa</span><span·class="p"·data-group-id="5769246018-5">}</span><span·class="p">,</span><span·class="w"> |
| 2477 | </span><span·class="p"·data-group-id=" | 2477 | </span><span·class="p"·data-group-id="5769246018-6">{</span><span·class="ss">sha256</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ecdsa</span><span·class="p"·data-group-id="5769246018-6">}</span><span·class="p">,</span><span·class="w"> |
| 2478 | </span><span·class="p"·data-group-id=" | 2478 | </span><span·class="p"·data-group-id="5769246018-7">{</span><span·class="ss">sha256</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">rsa</span><span·class="p"·data-group-id="5769246018-7">}</span><span·class="w"> |
| 2479 | </span><span·class="p"·data-group-id=" | 2479 | </span><span·class="p"·data-group-id="5769246018-1">]</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Change</h4><ul><li>Support·for·<code·class="inline">{md5,·rsa}</code>·was·removed·from·the·TLS-1.2·default·in |
| 2480 | ssl-8.0·(Erlang/OTP·22).</li><li>Support·for·<code·class="inline">{sha,·_}</code>·(SHA1)·and·<code·class="inline">{sha224,·_}</code>·was·removed | 2480 | ssl-8.0·(Erlang/OTP·22).</li><li>Support·for·<code·class="inline">{sha,·_}</code>·(SHA1)·and·<code·class="inline">{sha224,·_}</code>·was·removed |
| 2481 | from·the·TLS-1.2·default·in·ssl-11.0·(Erlang/OTP·26).</li></ul></section><p>The·list·for·<code·class="inline">rsa_pss_schemes</code>·is·defined·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 2481 | from·the·TLS-1.2·default·in·ssl-11.0·(Erlang/OTP·26).</li></ul></section><p>The·list·for·<code·class="inline">rsa_pss_schemes</code>·is·defined·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="2309040949-1">[</span><span·class="ss">rsa_pss_pss_sha512</span><span·class="p">,</span><span·class="w"> |
| 2482 | </span><span·class="ss">rsa_pss_pss_sha384</span><span·class="p">,</span><span·class="w"> | 2482 | </span><span·class="ss">rsa_pss_pss_sha384</span><span·class="p">,</span><span·class="w"> |
| 2483 | </span><span·class="ss">rsa_pss_pss_sha256</span><span·class="p">,</span><span·class="w"> | 2483 | </span><span·class="ss">rsa_pss_pss_sha256</span><span·class="p">,</span><span·class="w"> |
| 2484 | </span><span·class="ss">rsa_pss_rsae_sha512</span><span·class="p">,</span><span·class="w"> | 2484 | </span><span·class="ss">rsa_pss_rsae_sha512</span><span·class="p">,</span><span·class="w"> |
| 2485 | </span><span·class="ss">rsa_pss_rsae_sha384</span><span·class="p">,</span><span·class="w"> | 2485 | </span><span·class="ss">rsa_pss_rsae_sha384</span><span·class="p">,</span><span·class="w"> |
| 2486 | </span><span·class="ss">rsa_pss_rsae_sha256</span><span·class="p"·data-group-id=" | 2486 | </span><span·class="ss">rsa_pss_rsae_sha256</span><span·class="p"·data-group-id="2309040949-1">]</span></code></pre><p>The·list·of·<code·class="inline">TLS_13_Legacy_Schemes</code>·is·defined·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="5405992813-1">[</span><span·class="w"> |
| 2487 | </span><span·class="c1">%%·Legacy·algorithms·only·applicable·to·certificate·signatures</span><span·class="w"> | 2487 | </span><span·class="c1">%%·Legacy·algorithms·only·applicable·to·certificate·signatures</span><span·class="w"> |
| 2488 | </span><span·class="ss">rsa_pkcs1_sha512</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%%·Corresponds·to·{sha512,·rsa}</span><span·class="w"> | 2488 | </span><span·class="ss">rsa_pkcs1_sha512</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%%·Corresponds·to·{sha512,·rsa}</span><span·class="w"> |
| 2489 | </span><span·class="ss">rsa_pkcs1_sha384</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%%·Corresponds·to·{sha384,·rsa}</span><span·class="w"> | 2489 | </span><span·class="ss">rsa_pkcs1_sha384</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%%·Corresponds·to·{sha384,·rsa}</span><span·class="w"> |
| 2490 | </span><span·class="ss">rsa_pkcs1_sha256</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%%·Corresponds·to·{sha256,·rsa}</span><span·class="w"> | 2490 | </span><span·class="ss">rsa_pkcs1_sha256</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%%·Corresponds·to·{sha256,·rsa}</span><span·class="w"> |
| 2491 | </span><span·class="p"·data-group-id="4 | 2491 | </span><span·class="p"·data-group-id="5405992813-1">]</span></code></pre><p>The·list·of·<code·class="inline">Default_TLS_13_Schemes</code>·is·defined·as·follows:</p><pre><code·class="text">[ |
| 2492 | %%·EDDSA | 2492 | %%·EDDSA |
| 2493 | eddsa_ed25519, | 2493 | eddsa_ed25519, |
| 2494 | eddsa_ed448 | 2494 | eddsa_ed448 |
| 2495 | %%·ECDSA | 2495 | %%·ECDSA |
| 2496 | ecdsa_secp521r1_sha512, | 2496 | ecdsa_secp521r1_sha512, |
| 2497 | ecdsa_secp384r1_sha384, | 2497 | ecdsa_secp384r1_sha384, |
| Offset 2570, 16 lines modified | Offset 2570, 16 lines modified | ||
| 2570 | ······<div·class="specs"> | 2570 | ······<div·class="specs"> |
| 2571 | ··········<pre·translate="no"><span·class="attribute">-type</span>·anchor_fun()·::·fun().</pre> | 2571 | ··········<pre·translate="no"><span·class="attribute">-type</span>·anchor_fun()·::·fun().</pre> |
| 2572 | ······</div> | 2572 | ······</div> |
| 2573 | <p>Claim·an·intermediate·CA·in·the·chain·as·trusted.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="p"·data-group-id=" | 2573 | <p>Claim·an·intermediate·CA·in·the·chain·as·trusted.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="p"·data-group-id="5241811343-1">(</span><span·class="n">Chain</span><span·class="p">:</span><span·class="p">:</span><span·class="p"·data-group-id="5241811343-2">[</span><span·class="nc">public_key</span><span·class="p">:</span><span·class="nf">der_encoded</span><span·class=[·...·truncated·by·diffoscope;·len:·188,·SHA:·9bc0ff799459d518371b5ffc7e164cbe81cec1deb931324acf807dbb2be782b3·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 2574 | ······</span><span·class="p"·data-group-id=" | 2574 | ······</span><span·class="p"·data-group-id="5241811343-4">{</span><span·class="ss">trusted_ca</span><span·class="p">,</span><span·class="w">·</span><span·class="n">DerCert</span><span·class="p">:</span><span·class="p">:</span><span·class="nc">public_key</span><span·class="p">:</span><span·class="nf"[·...·truncated·by·diffoscope;·len:·166,·SHA:·01013d3696542d82027b938ccc205304e53ad742f61d2a0e469666c199ac17c9·...·]-4">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">unknown_ca</span><span·class="p">.</span></code></pre><p>TLS·then·uses·<a·href="../../../../lib/public_key-1.17.1/doc/html/public_key.html#pkix_path_validation/3"><code·class="inline">public_key:pkix_path_validation/3</code></a>·with·the·selected·CA |
| 2575 | as·the·trusted·anchor·and·verifies·the·rest·of·the·chain.</p> | 2575 | as·the·trusted·anchor·and·verifies·the·rest·of·the·chain.</p> |
| 2576 | ··</section> | 2576 | ··</section> |
| 2577 | </section> | 2577 | </section> |
| 2578 | <section·class="detail"·id="t:cert_key_conf/0"> | 2578 | <section·class="detail"·id="t:cert_key_conf/0"> |
| 2579 | ··<div·class="detail-header"> | 2579 | ··<div·class="detail-header"> |
| 2580 | ····<a·href="#t:cert_key_conf/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·type"> | 2580 | ····<a·href="#t:cert_key_conf/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·type"> |
| Offset 3001, 15 lines modified | Offset 3001, 15 lines modified | ||
| 3001 | <a·href="#connect/3">connect/3,4</a>·unless·it·is·of·type·<a·href="../../../../lib/kernel-10.2.3/doc/html/inet.html#t:ip_address/0"><code·class="inline">inet:ip_address()</code></a>. | 3001 | <a·href="#connect/3">connect/3,4</a>·unless·it·is·of·type·<a·href="../../../../lib/kernel-10.2.3/doc/html/inet.html#t:ip_address/0"><code·class="inline">inet:ip_address()</code></a>. |
| 3002 | The·hostname·will·also·be·used·in·the·hostname·verification·of·the·peer | 3002 | The·hostname·will·also·be·used·in·the·hostname·verification·of·the·peer |
| 3003 | certificate·using·<a·href="../../../../lib/public_key-1.17.1/doc/html/public_key.html#pkix_verify_hostname/2"><code·class="inline">public_key:pkix_verify_hostname/2</code></a>. | 3003 | certificate·using·<a·href="../../../../lib/public_key-1.17.1/doc/html/public_key.html#pkix_verify_hostname/2"><code·class="inline">public_key:pkix_verify_hostname/2</code></a>. |
| 3004 | The·special·value·<code·class="inline">disable</code>·prevents·the·Server·Name·Indication·extension·from | 3004 | The·special·value·<code·class="inline">disable</code>·prevents·the·Server·Name·Indication·extension·from |
| 3005 | being·sent·and·disables·the·hostname·verification·check.</p></li><li><p><strong><code·class="inline">{customize_hostname_check,·HostNameCheckOpts}</code></strong>·-·Customization·option</p><p>Customizes·the·hostname·verification·of·the·peer·certificate,·as·various | 3005 | being·sent·and·disables·the·hostname·verification·check.</p></li><li><p><strong><code·class="inline">{customize_hostname_check,·HostNameCheckOpts}</code></strong>·-·Customization·option</p><p>Customizes·the·hostname·verification·of·the·peer·certificate,·as·various |
| 3006 | protocols·that·use·TLS,·such·as·HTTP·or·LDAP,·may·require·different·approaches.·For | 3006 | protocols·that·use·TLS,·such·as·HTTP·or·LDAP,·may·require·different·approaches.·For |
| 3007 | example,·here·is·how·to·use·standard·hostname·checking·for·HTTPS·implemented·in | 3007 | example,·here·is·how·to·use·standard·hostname·checking·for·HTTPS·implemented·in |
| 3008 | <a·href="../../../../lib/public_key-1.17.1/doc/html/public_key_app.html">Public_Key</a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 3008 | <a·href="../../../../lib/public_key-1.17.1/doc/html/public_key_app.html">Public_Key</a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="5562738504-1">{</span><span·class="ss">customize_hostname_check</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5562738504-2">[</span><span·class="p"·data-group-id="5562738504-3">{</span><span·class="ss">match_fun</span[·...·truncated·by·diffoscope;·len:·443,·SHA:·145c1045144b10fc12a95043bbd63602d502b0a0262d379f8567974745696342·...·]-1">}</span></code></pre><p>For·futher·description·of·the·customize·options,·see |
| 3009 | <a·href="../../../../lib/public_key-1.17.1/doc/html/public_key.html#pkix_verify_hostname/3"><code·class="inline">public_key:pkix_verify_hostname/3</code></a>.</p></li><li><p><strong><code·class="inline">{client_certificate_authorities,·UseCertAuth}</code></strong>·-·Inter-op·hint·option</p><p>If·<code·class="inline">UseCertAuth</code>·is·set·to·<code·class="inline">true</code>,·sends·the·certificate·authorities | 3009 | <a·href="../../../../lib/public_key-1.17.1/doc/html/public_key.html#pkix_verify_hostname/3"><code·class="inline">public_key:pkix_verify_hostname/3</code></a>.</p></li><li><p><strong><code·class="inline">{client_certificate_authorities,·UseCertAuth}</code></strong>·-·Inter-op·hint·option</p><p>If·<code·class="inline">UseCertAuth</code>·is·set·to·<code·class="inline">true</code>,·sends·the·certificate·authorities |
| 3010 | extension·in·the·TLS-1.3·client·hello.·The·default·is·<code·class="inline">false</code>.·Note | 3010 | extension·in·the·TLS-1.3·client·hello.·The·default·is·<code·class="inline">false</code>.·Note |
| 3011 | that·setting·<code·class="inline">UseCertAuth</code>·to·<code·class="inline">true</code>·can·result·in·a·significant | 3011 | that·setting·<code·class="inline">UseCertAuth</code>·to·<code·class="inline">true</code>·can·result·in·a·significant |
| 3012 | overhead·if·there·exists·many·trusted·CA·certificates.·(Since | 3012 | overhead·if·there·exists·many·trusted·CA·certificates.·(Since |
| 3013 | Erlang/OTP·24.3.)</p></li><li><p><strong><code·class="inline">{stapling,·Stapling}</code></strong>·-·Certificate·revocation·check·option</p><p>If·<code·class="inline">Stapling</code>·is·atom·<code·class="inline">staple</code>·or·a·map,·OCSP·stapling·will·be | 3013 | Erlang/OTP·24.3.)</p></li><li><p><strong><code·class="inline">{stapling,·Stapling}</code></strong>·-·Certificate·revocation·check·option</p><p>If·<code·class="inline">Stapling</code>·is·atom·<code·class="inline">staple</code>·or·a·map,·OCSP·stapling·will·be |
| 3014 | enabled,·meaning·that·an·extension·of·type·"status_request"·will·be | 3014 | enabled,·meaning·that·an·extension·of·type·"status_request"·will·be |
| 3015 | included·in·the·client·hello·to·indicate·the·desire·to·receive | 3015 | included·in·the·client·hello·to·indicate·the·desire·to·receive |
| Offset 3139, 25 lines modified | Offset 3139, 25 lines modified | ||
| 3139 | ··········{early_data,·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>()}·| | 3139 | ··········{early_data,·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>()}·| |
| 3140 | ··········{middlebox_comp_mode,·MiddleBoxMode·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:boolean/0">boolean</a>()}.</pre> | 3140 | ··········{middlebox_comp_mode,·MiddleBoxMode·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:boolean/0">boolean</a>()}.</pre> |
| 3141 | ······</div> | 3141 | ······</div> |
| 3142 | <p>Options·only·relevant·for·TLS-1.3.</p><ul><li><p><strong><code·class="inline">{session_tickets,·SessionTickets}</code></strong>·-·Use·of·session·tickets</p><p>Configures·the·session·ticket·functionality.·Allowed·values·are·<code·class="inline">disabled</code>, | 3142 | <p>Options·only·relevant·for·TLS-1.3.</p><ul><li><p><strong><code·class="inline">{session_tickets,·SessionTickets}</code></strong>·-·Use·of·session·tickets</p><p>Configures·the·session·ticket·functionality.·Allowed·values·are·<code·class="inline">disabled</code>, |
| 3143 | <code·class="inline">manual</code>,·and·<code·class="inline">auto</code>.·If·it·is·set·to·<code·class="inline">manual</code>·the·client·will·send·the·ticket | 3143 | <code·class="inline">manual</code>,·and·<code·class="inline">auto</code>.·If·it·is·set·to·<code·class="inline">manual</code>·the·client·will·send·the·ticket |
| 3144 | information·to·user·process·in·a·3-tuple:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 3144 | information·to·user·process·in·a·3-tuple:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="0517775292-1">{</span><span·class="ss">ssl</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">session_ticket</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0517775292-2">{</span><span·class="n">SNI<[·...·truncated·by·diffoscope;·len:·181,·SHA:·96e3cc2e6497dbef6c078be03d6896499470da0cf5b54f44de74078aee1e2069·...·]-1">}</span></code></pre><p>where·<code·class="inline">SNI</code>·is·the·ServerNameIndication·and·<code·class="inline">TicketData</code>·is·the·extended·ticket |
| 3145 | data·that·can·be·used·in·subsequent·session·resumptions.</p><p>If·it·is·set·to·<code·class="inline">auto</code>,·the·client·automatically·handles·received·tickets·and | 3145 | data·that·can·be·used·in·subsequent·session·resumptions.</p><p>If·it·is·set·to·<code·class="inline">auto</code>,·the·client·automatically·handles·received·tickets·and |
| 3146 | tries·to·use·them·when·making·new·TLS·connections·(session·resumption·with | 3146 | tries·to·use·them·when·making·new·TLS·connections·(session·resumption·with |
| 3147 | pre-shared·keys).</p><p>Ticket·lifetime,·the·number·of·tickets·sent·by·the·server,·and·the | 3147 | pre-shared·keys).</p><p>Ticket·lifetime,·the·number·of·tickets·sent·by·the·server,·and·the |
| 3148 | maximum·number·of·tickets·stored·by·the·server·in·stateful·mode·are·configured | 3148 | maximum·number·of·tickets·stored·by·the·server·in·stateful·mode·are·configured |
| 3149 | by·<a·href="ssl_app.html#configuration">application·variables</a>.</p><p>See·also | 3149 | by·<a·href="ssl_app.html#configuration">application·variables</a>.</p><p>See·also |
| 3150 | <a·href="using_ssl.html#session-tickets-and-session-resumption-in-tls-1-3">SSL·User's·Guide,·Session·Tickets·and·Session·Resumption·in·TLS·1.3</a>.</p></li><li><p><strong><code·class="inline">{use_ticket,·Tickets}</code></strong></p><p>Configures·the·session·tickets·to·be·used·for·session·resumption.·It·is·a | 3150 | <a·href="using_ssl.html#session-tickets-and-session-resumption-in-tls-1-3">SSL·User's·Guide,·Session·Tickets·and·Session·Resumption·in·TLS·1.3</a>.</p></li><li><p><strong><code·class="inline">{use_ticket,·Tickets}</code></strong></p><p>Configures·the·session·tickets·to·be·used·for·session·resumption.·It·is·a |
| 3151 | mandatory·option·in·<code·class="inline">manual</code>·mode·(<code·class="inline">{session_tickets,·manual}</code>).</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Session·tickets·are·only·sent·to·the·user·if·option·<code·class="inline">session_tickets</code>·is·set·to | 3151 | mandatory·option·in·<code·class="inline">manual</code>·mode·(<code·class="inline">{session_tickets,·manual}</code>).</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Session·tickets·are·only·sent·to·the·user·if·option·<code·class="inline">session_tickets</code>·is·set·to |
| 3152 | <code·class="inline">manual</code></p><p>This·option·is·supported·by·TLS-1.3.·See·also | 3152 | <code·class="inline">manual</code></p><p>This·option·is·supported·by·TLS-1.3.·See·also |
| 3153 | <a·href="using_ssl.html#session-tickets-and-session-resumption-in-tls-1-3">SSL·User's·Guide,·Session·Tickets·and·Session·Resumption·in·TLS·1.3</a>.</p></section></li><li><p><strong><code·class="inline">{early_data,·EarlyData}</code></strong></p><p>Configures·the·early·data·to·be·sent·by·the·client.</p><p>To·verify·that·the·server·has·the·intention·to·process·the·early | 3153 | <a·href="using_ssl.html#session-tickets-and-session-resumption-in-tls-1-3">SSL·User's·Guide,·Session·Tickets·and·Session·Resumption·in·TLS·1.3</a>.</p></section></li><li><p><strong><code·class="inline">{early_data,·EarlyData}</code></strong></p><p>Configures·the·early·data·to·be·sent·by·the·client.</p><p>To·verify·that·the·server·has·the·intention·to·process·the·early |
| 3154 | data,·the·following·tuple·is·sent·to·the·user·process:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 3154 | data,·the·following·tuple·is·sent·to·the·user·process:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="1261718634-1">{</span><span·class="ss">ssl</span><span·class="p">,</span><span·class="w">·</span><span·class="n">SslSocket</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1261718634-2">{</span><span·class="ss">early_dat[·...·truncated·by·diffoscope;·len:·179,·SHA:·0ce2fe30af3cd8d69800b3dade076cc254fb255c45e569037c1046da395352c5·...·]-1">}</span></code></pre><p>where·<code·class="inline">Result</code>·is·either·<code·class="inline">accepted</code>·or·<code·class="inline">rejected</code>.</p><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>It·is·the·responsibility·of·the·user·to·handle·rejected·<code·class="inline">EarlyData</code>·and·to |
| 3155 | resend·when·appropriate.</p></section></li><li><p><strong><code·class="inline">{middlebox_comp_mode,·MiddleBoxMode}</code></strong></p><p>Configures·the·middlebox·compatibility·mode·for·a·TLS-1.3·connection.</p><p>A·significant·number·of·middleboxes·misbehave·when·a·TLS-1.3 | 3155 | resend·when·appropriate.</p></section></li><li><p><strong><code·class="inline">{middlebox_comp_mode,·MiddleBoxMode}</code></strong></p><p>Configures·the·middlebox·compatibility·mode·for·a·TLS-1.3·connection.</p><p>A·significant·number·of·middleboxes·misbehave·when·a·TLS-1.3 |
| 3156 | connection·is·negotiated.·Implementations·can·increase·the·chance·of | 3156 | connection·is·negotiated.·Implementations·can·increase·the·chance·of |
| 3157 | making·connections·through·those·middleboxes·by·adapting·the·TLS-1.3 | 3157 | making·connections·through·those·middleboxes·by·adapting·the·TLS-1.3 |
| 3158 | handshake·to·resemble·that·of·a·TLS-1.2·handshake.</p><p>The·middlebox·compatibility·mode·is·enabled·(<code·class="inline">true</code>)·by·default.</p></li></ul> | 3158 | handshake·to·resemble·that·of·a·TLS-1.2·handshake.</p><p>The·middlebox·compatibility·mode·is·enabled·(<code·class="inline">true</code>)·by·default.</p></li></ul> |
| 3159 | ··</section> | 3159 | ··</section> |
| 3160 | </section> | 3160 | </section> |
| Offset 3559, 28 lines modified | Offset 3559, 28 lines modified | ||
| 3559 | and·key·options.·For·examples,·see·the·<a·href="using_ssl.html">User's·Guide</a>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p><code·class="inline">eddsa</code>·certificates·are·only·supported·by·TLS-1.3·implementations·that·do·not·support·<code·class="inline">dsa</code> | 3559 | and·key·options.·For·examples,·see·the·<a·href="using_ssl.html">User's·Guide</a>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p><code·class="inline">eddsa</code>·certificates·are·only·supported·by·TLS-1.3·implementations·that·do·not·support·<code·class="inline">dsa</code> |
| 3560 | certificates.·<code·class="inline">rsa_pss_pss</code>·(RSA·certificates·using·Probabilistic·Signature | 3560 | certificates.·<code·class="inline">rsa_pss_pss</code>·(RSA·certificates·using·Probabilistic·Signature |
| 3561 | Scheme)·are·supported·in·TLS-1.2·and·TLS-1.3,·but·some·TLS-1.2·implementations | 3561 | Scheme)·are·supported·in·TLS-1.2·and·TLS-1.3,·but·some·TLS-1.2·implementations |
| 3562 | do·not·support·<code·class="inline">rsa_pss_pss</code>.</p></section></li><li><p><strong><code·class="inline">{depth,·AllowedCertChainLen}</code></strong>·-·Limits·the·accepted·number·of·certificates·in·the·certificate·chain.</p><p>Maximum·number·of·non-self-issued·intermediate·certificates·that·can·follow·the | 3562 | do·not·support·<code·class="inline">rsa_pss_pss</code>.</p></section></li><li><p><strong><code·class="inline">{depth,·AllowedCertChainLen}</code></strong>·-·Limits·the·accepted·number·of·certificates·in·the·certificate·chain.</p><p>Maximum·number·of·non-self-issued·intermediate·certificates·that·can·follow·the |
| 3563 | peer·certificate·in·a·valid·certification·path.·So,·if·depth·is·0·the·PEER·must | 3563 | peer·certificate·in·a·valid·certification·path.·So,·if·depth·is·0·the·PEER·must |
| 3564 | be·signed·by·the·trusted·ROOT-CA·directly;·if·1·the·path·can·be·PEER,·CA, | 3564 | be·signed·by·the·trusted·ROOT-CA·directly;·if·1·the·path·can·be·PEER,·CA, |
| 3565 | ROOT-CA;·if·2·the·path·can·be·PEER,·CA,·CA,·ROOT-CA,·and·so·on.·The·default | 3565 | ROOT-CA;·if·2·the·path·can·be·PEER,·CA,·CA,·ROOT-CA,·and·so·on.·The·default |
| 3566 | value·is·10.·Used·to·mitigate·DoS·attack·possibilities.</p></li><li><p><strong><code·class="inline">{verify_fun,·Verify}</code></strong>·-·Customize·certificate·path·validation</p><p>The·verification·fun·is·to·be·defined·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="p"·data-group-id=" | 3566 | value·is·10.·Used·to·mitigate·DoS·attack·possibilities.</p></li><li><p><strong><code·class="inline">{verify_fun,·Verify}</code></strong>·-·Customize·certificate·path·validation</p><p>The·verification·fun·is·to·be·defined·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="p"·data-group-id="2000503368-1">(</span><span·class="n">OtpCert</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">'OTPCertificate'</span><span·class="p"·data-group-id="20005[·...·truncated·by·diffoscope;·len:·58,·SHA:·9a9fc776e8bb6463bb88e40343f10e8dbf0cf890ad68863189114abb7665f195·...·]-2">}</span><span·class="p">,</span><span·class="w"> |
| 3567 | ····</span><span·class="n">Event</span><span·class="p">,</span><span·class="w">·</span><span·class="n">InitialUserState</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id=" | 3567 | ····</span><span·class="n">Event</span><span·class="p">,</span><span·class="w">·</span><span·class="n">InitialUserState</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id="2000503368-3">(</span><span·class="p"·data-group-id="2000503368-3">)</span><span·class="p"·data-group-id="2000503368-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 3568 | ··</span><span·class="p"·data-group-id=" | 3568 | ··</span><span·class="p"·data-group-id="2000503368-4">{</span><span·class="ss">valid</span><span·class="p">,</span><span·class="w">·</span><span·class="n">UserState</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</span><[·...·truncated·by·diffoscope;·len:·146,·SHA:·35b5de1f6fa89df1b46867b30275da26f2dd6b0b763281bac6e8bc3dad89eae6·...·]-4">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 3569 | ··</span><span·class="p"·data-group-id=" | 3569 | ··</span><span·class="p"·data-group-id="2000503368-6">{</span><span·class="ss">fail</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</span><span[·...·truncated·by·diffoscope;·len:·661,·SHA:·4a3be89201766791964d4b0bd5b294b5091ef1103d48421465a3aed9d4b0a52a·...·]-8">}</span><span·class="p">.</span><span·class="w"> |
| 3570 | </span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 3570 | </span><span·class="nf">fun</span><span·class="p"·data-group-id="2000503368-10">(</span><span·class="n">OtpCert</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">'OTPCertificate'</span><span·class="p"·data-group-id="2000[·...·truncated·by·diffoscope;·len:·435,·SHA:·e103364c675b30a2d6654cc0b04f775b5d32db5a8eecf591a83d622e75826102·...·]-12">)</span><span·class="p">,</span><span·class="w"> |
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| 143 | </h2> | 143 | </h2> |
| 144 | <p>Boot·scripts·are·built·using·the·<code·class="inline">systools</code>·utility·in·the·SASL·application.·For | 144 | <p>Boot·scripts·are·built·using·the·<code·class="inline">systools</code>·utility·in·the·SASL·application.·For |
| 145 | more·information·on·<code·class="inline">systools</code>,·see·the·SASL·documentation.·This·is·only·an | 145 | more·information·on·<code·class="inline">systools</code>,·see·the·SASL·documentation.·This·is·only·an |
| 146 | example·of·what·can·be·done.</p><p>The·simplest·boot·script·possible·includes·only·the·Kernel·and·STDLIB | 146 | example·of·what·can·be·done.</p><p>The·simplest·boot·script·possible·includes·only·the·Kernel·and·STDLIB |
| 147 | applications.·Such·a·script·is·located·in·the·<code·class="inline">bin</code>·directory·of·the·Erlang | 147 | applications.·Such·a·script·is·located·in·the·<code·class="inline">bin</code>·directory·of·the·Erlang |
| 148 | distribution.·The·source·for·the·script·is·found·under·the·Erlang·installation | 148 | distribution.·The·source·for·the·script·is·found·under·the·Erlang·installation |
| 149 | top·directory·under·<code·class="inline">releases/<OTP·version>/start_clean.rel</code>.</p><p>Do·the·following:</p><ul><li>Copy·that·script·to·another·location·(and·preferably·another·name).</li><li>Add·the·applications·Crypto,·Public·Key,·and·SSL·with·their·current·version | 149 | top·directory·under·<code·class="inline">releases/<OTP·version>/start_clean.rel</code>.</p><p>Do·the·following:</p><ul><li>Copy·that·script·to·another·location·(and·preferably·another·name).</li><li>Add·the·applications·Crypto,·Public·Key,·and·SSL·with·their·current·version |
| 150 | numbers·after·the·STDLIB·application.</li></ul><p>The·following·shows·an·example·<code·class="inline">.rel</code>·file·with·TLS·added:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">······</span><span·class="p"·data-group-id=" | 150 | numbers·after·the·STDLIB·application.</li></ul><p>The·following·shows·an·example·<code·class="inline">.rel</code>·file·with·TLS·added:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">······</span><span·class="p"·data-group-id="9882717914-1">{</span><span·class="ss">release</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9882717914-2">{</span><span·class="s">"OTP··APN·181·01"</span><span·class="p">,</span><span·class="s">"R15A&q[·...·truncated·by·diffoscope;·len:·320,·SHA:·5b35f303d21081d3f6d199779eee64040390ef5ce05caae270b4f53d40245771·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 151 | ······</span><span·class="p"·data-group-id=" | 151 | ······</span><span·class="p"·data-group-id="9882717914-4">[</span><span·class="p"·data-group-id="9882717914-5">{</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="s">"2.15"</span><span·class="p"·data-group-id="9882717914-5">}</span><span·class="p">,</span><span·class="w"> |
| 152 | ······</span><span·class="p"·data-group-id=" | 152 | ······</span><span·class="p"·data-group-id="9882717914-6">{</span><span·class="ss">stdlib</span><span·class="p">,</span><span·class="s">"1.18"</span><span·class="p"·data-group-id="9882717914-6">}</span><span·class="p">,</span><span·class="w"> |
| 153 | ······</span><span·class="p"·data-group-id=" | 153 | ······</span><span·class="p"·data-group-id="9882717914-7">{</span><span·class="ss">crypto</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"2.0.3"</span><span·class="p"·data-group-id="9882717914-7">}</span><span·class="p">,</span><span·class="w"> |
| 154 | ······</span><span·class="p"·data-group-id=" | 154 | ······</span><span·class="p"·data-group-id="9882717914-8">{</span><span·class="ss">public_key</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"0.12"</span><span·class="p"·data-group-id="9882717914-8">}</span><span·class="p">,</span><span·class="w"> |
| 155 | ······</span><span·class="p"·data-group-id=" | 155 | ······</span><span·class="p"·data-group-id="9882717914-9">{</span><span·class="ss">asn1</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"4.0"</span><span·class="p"·data-group-id="9882717914-9">}</span><span·class="p">,</span><span·class="w"> |
| 156 | ······</span><span·class="p"·data-group-id=" | 156 | ······</span><span·class="p"·data-group-id="9882717914-10">{</span><span·class="ss">ssl</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"5.0"</span><span·class="p"·data-group-id="9882717914-10">}</span><span·class="w"> |
| 157 | ······</span><span·class="p"·data-group-id=" | 157 | ······</span><span·class="p"·data-group-id="9882717914-4">]</span><span·class="p"·data-group-id="9882717914-1">}</span><span·class="p">.</span></code></pre><p>The·version·numbers·differ·in·your·system.·Whenever·one·of·the·applications |
| 158 | included·in·the·script·is·upgraded,·change·the·script.</p><p>Do·the·following:</p><ul><li><p>Build·the·boot·script.</p><p>Assuming·the·<code·class="inline">.rel·file</code>·is·stored·in·a·file·<code·class="inline">start_ssl.rel</code>·in·the·current | 158 | included·in·the·script·is·upgraded,·change·the·script.</p><p>Do·the·following:</p><ul><li><p>Build·the·boot·script.</p><p>Assuming·the·<code·class="inline">.rel·file</code>·is·stored·in·a·file·<code·class="inline">start_ssl.rel</code>·in·the·current |
| 159 | directory,·a·boot·script·can·be·built·as·follows:</p></li></ul><pre><code·class="text">···1>·systools:make_script("start_ssl",[]).</code></pre><p>There·is·now·a·<code·class="inline">start_ssl.boot</code>·file·in·the·current·directory.</p><p>Do·the·following:</p><ul><li>Test·the·boot·script.·To·do·this,·start·Erlang·with·the·<code·class="inline">-boot</code>·command-line | 159 | directory,·a·boot·script·can·be·built·as·follows:</p></li></ul><pre><code·class="text">···1>·systools:make_script("start_ssl",[]).</code></pre><p>There·is·now·a·<code·class="inline">start_ssl.boot</code>·file·in·the·current·directory.</p><p>Do·the·following:</p><ul><li>Test·the·boot·script.·To·do·this,·start·Erlang·with·the·<code·class="inline">-boot</code>·command-line |
| 160 | parameter·specifying·this·boot·script·(with·its·full·path,·but·without·the | 160 | parameter·specifying·this·boot·script·(with·its·full·path,·but·without·the |
| 161 | <code·class="inline">.boot</code>·suffix).·In·UNIX·it·can·look·as·follows:</li></ul><pre><code·class="text">$·erl·-boot·/home/me/ssl/start_ssl | 161 | <code·class="inline">.boot</code>·suffix).·In·UNIX·it·can·look·as·follows:</li></ul><pre><code·class="text">$·erl·-boot·/home/me/ssl/start_ssl |
| 162 | Erlang·(BEAM)·emulator·version·5.0 | 162 | Erlang·(BEAM)·emulator·version·5.0 |
| 163 | Eshell·V5.0··(abort·with·^G) | 163 | Eshell·V5.0··(abort·with·^G) |
| Offset 197, 18 lines modified | Offset 197, 18 lines modified | ||
| 197 | function·body·cannot·be·compiled·when·consulting·a·file.·Also·the·encoding | 197 | function·body·cannot·be·compiled·when·consulting·a·file.·Also·the·encoding |
| 198 | of·the·file·can·be·specified·as·defined·by·module·<a·href="../../../../lib/stdlib-6.2.1/doc/html/epp.html"><code·class="inline">epp</code></a>.</p></section><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>Do·not·tamper·with·the·socket·options·<code·class="inline">list</code>,·<code·class="inline">binary</code>,·<code·class="inline">active</code>,·<code·class="inline">packet</code>, | 198 | of·the·file·can·be·specified·as·defined·by·module·<a·href="../../../../lib/stdlib-6.2.1/doc/html/epp.html"><code·class="inline">epp</code></a>.</p></section><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>Do·not·tamper·with·the·socket·options·<code·class="inline">list</code>,·<code·class="inline">binary</code>,·<code·class="inline">active</code>,·<code·class="inline">packet</code>, |
| 199 | <code·class="inline">nodelay</code>·and·<code·class="inline">deliver</code>·since·they·are·used·by·the·distribution·protocol·handler | 199 | <code·class="inline">nodelay</code>·and·<code·class="inline">deliver</code>·since·they·are·used·by·the·distribution·protocol·handler |
| 200 | itself.·Other·raw·socket·options·such·as·<code·class="inline">packet_size</code>·may·interfere·severely, | 200 | itself.·Other·raw·socket·options·such·as·<code·class="inline">packet_size</code>·may·interfere·severely, |
| 201 | so·beware!</p></section><p>For·TLS·to·work,·at·least·a·public·key·and·a·certificate·must·be·specified·for | 201 | so·beware!</p></section><p>For·TLS·to·work,·at·least·a·public·key·and·a·certificate·must·be·specified·for |
| 202 | the·server·side·and·the·client·needs·to·specify·CAs·that·it·trusts·(client·certification | 202 | the·server·side·and·the·client·needs·to·specify·CAs·that·it·trusts·(client·certification |
| 203 | is·optional·and·requires·more·configuration).</p><p>In·the·following·example·(to·keep·it·simple),·the·PEM·file·<code·class="inline">"/home/me/ssl/erlserver.pem"</code> | 203 | is·optional·and·requires·more·configuration).</p><p>In·the·following·example·(to·keep·it·simple),·the·PEM·file·<code·class="inline">"/home/me/ssl/erlserver.pem"</code> |
| 204 | contains·both·the·server·certificate·and·its·private·key·.</p><p>Create·a·file·named·for·example·<code·class="inline">"/home/me/ssl/ssl_test@myhost.conf"</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 204 | contains·both·the·server·certificate·and·its·private·key·.</p><p>Create·a·file·named·for·example·<code·class="inline">"/home/me/ssl/ssl_test@myhost.conf"</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="6121198349-1">[</span><span·class="p"·data-group-id="6121198349-2">{</span><span·class="ss">server</span><span·class="p">,</span><span·class="w"> |
| 205 | ··</span><span·class="p"·data-group-id=" | 205 | ··</span><span·class="p"·data-group-id="6121198349-3">[</span><span·class="p"·data-group-id="6121198349-4">{</span><span·class="ss">certfile</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"/home/me/ssl/erlserver.pem"</span><span·class="p"·data-group-id="612119834[·...·truncated·by·diffoscope;·len:·107,·SHA:·d2994ffdb131e797389b0946f53f2a3e383f45642aba2883ecc697761bb1b6c5·...·]-2">}</span><span·class="p">,</span><span·class="w"> |
| 206 | ·</span><span·class="p"·data-group-id=" | 206 | ·</span><span·class="p"·data-group-id="6121198349-5">{</span><span·class="ss">client</span><span·class="p">,</span><span·class="w"> |
| 207 | ··</span><span·class="p"·data-group-id=" | 207 | ··</span><span·class="p"·data-group-id="6121198349-6">[</span><span·class="p"·data-group-id="6121198349-7">{</span><span·class="ss">cacertfile</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"/home/me/ssl/client_trusted.pem"</span><span·class="p"·data-group-id="61[·...·truncated·by·diffoscope;·len:·167,·SHA:·a467639108b5cbe7f1be465a4b52f3a55fcf6c575bcbe9b4a58beb34835bc1f8·...·]-1">]</span><span·class="p">.</span></code></pre><p>And·then·start·the·node·like·this·(line·breaks·in·the·command·are·for |
| 208 | readability,·and·shall·not·be·there·when·typed):</p><pre><code·class="text">$·erl·-boot·/home/me/ssl/start_ssl·-proto_dist·inet_tls | 208 | readability,·and·shall·not·be·there·when·typed):</p><pre><code·class="text">$·erl·-boot·/home/me/ssl/start_ssl·-proto_dist·inet_tls |
| 209 | ··-ssl_dist_optfile·"/home/me/ssl/ssl_test@myhost.conf" | 209 | ··-ssl_dist_optfile·"/home/me/ssl/ssl_test@myhost.conf" |
| 210 | ··-sname·ssl_test</code></pre><p>The·options·in·the·<code·class="inline">{server,·Opts}</code>·tuple·are·used·when·calling | 210 | ··-sname·ssl_test</code></pre><p>The·options·in·the·<code·class="inline">{server,·Opts}</code>·tuple·are·used·when·calling |
| 211 | <a·href="ssl.html#handshake/3"><code·class="inline">ssl:handshake/3</code></a>,·and·the·options·in·the·<code·class="inline">{client,·Opts}</code>·tuple·are·used·when | 211 | <a·href="ssl.html#handshake/3"><code·class="inline">ssl:handshake/3</code></a>,·and·the·options·in·the·<code·class="inline">{client,·Opts}</code>·tuple·are·used·when |
| 212 | calling·<a·href="ssl.html#connect/4"><code·class="inline">ssl:connect/4</code></a>.</p><p>For·the·client,·the·option·<code·class="inline">{server_name_indication,·atom_to_list(TargetNode)}</code> | 212 | calling·<a·href="ssl.html#connect/4"><code·class="inline">ssl:connect/4</code></a>.</p><p>For·the·client,·the·option·<code·class="inline">{server_name_indication,·atom_to_list(TargetNode)}</code> |
| 213 | is·added·when·connecting.·This·makes·it·possible·to·use·the·client·option | 213 | is·added·when·connecting.·This·makes·it·possible·to·use·the·client·option |
| 214 | <code·class="inline">{verify,·verify_peer}</code>,·and·the·client·will·verify·that·the·certificate·matches | 214 | <code·class="inline">{verify,·verify_peer}</code>,·and·the·client·will·verify·that·the·certificate·matches |
| Offset 270, 27 lines modified | Offset 270, 27 lines modified | ||
| 270 | in·that·variable·and·are·then·interpreted·as·command-line·arguments·for·all | 270 | in·that·variable·and·are·then·interpreted·as·command-line·arguments·for·all |
| 271 | subsequent·invocations·of·Erlang.</p><p>In·a·Unix·(Bourne)·shell,·it·can·look·as·follows·(line·breaks·are·for | 271 | subsequent·invocations·of·Erlang.</p><p>In·a·Unix·(Bourne)·shell,·it·can·look·as·follows·(line·breaks·are·for |
| 272 | readability,·they·are·not·to·be·there·when·typed):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="n">ERL_FLAGS</span><span·class="o">=</span><span·class="s">"-boot·/home/me/ssl/start_ssl·-proto_dist·inet_tls | 272 | readability,·they·are·not·to·be·there·when·typed):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="n">ERL_FLAGS</span><span·class="o">=</span><span·class="s">"-boot·/home/me/ssl/start_ssl·-proto_dist·inet_tls |
| 273 | ··-ssl_dist_opt·server_certfile·/home/me/ssl/erlserver.pem | 273 | ··-ssl_dist_opt·server_certfile·/home/me/ssl/erlserver.pem |
| 274 | ··-ssl_dist_opt·server_secure_renegotiate·true·client_secure_renegotiate·true"</span><span·class="w"> | 274 | ··-ssl_dist_opt·server_secure_renegotiate·true·client_secure_renegotiate·true"</span><span·class="w"> |
| 275 | </span><span·class="sc">$·</span><span·class="ss">export</span><span·class="w">·</span><span·class="n">ERL_FLAGS</span><span·class="w"> | 275 | </span><span·class="sc">$·</span><span·class="ss">export</span><span·class="w">·</span><span·class="n">ERL_FLAGS</span><span·class="w"> |
| 276 | </span><span·class="sc">$·</span><span·class="ss">erl</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">sname</span><span·class="w">·</span><span·class="ss">ssl_test</span><span·class="w"> | 276 | </span><span·class="sc">$·</span><span·class="ss">erl</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">sname</span><span·class="w">·</span><span·class="ss">ssl_test</span><span·class="w"> |
| 277 | </span><span·class="n">Erlang</span><span·class="w">·</span><span·class="p"·data-group-id=" | 277 | </span><span·class="n">Erlang</span><span·class="w">·</span><span·class="p"·data-group-id="2411806187-1">(</span><span·class="n">BEAM</span><span·class="p"·data-group-id="2411806187-1">)</span><span·class="w">·</span><span·class="ss">emulator</span><span·class="w">·</span><span·class="ss">version</span><span·class="w">·</span><span·class="mf">5.[·...·truncated·by·diffoscope;·len:·156,·SHA:·400efcc396890f3a7dbd54427fbaeed8a7ce5d224bca52a3d79247f6d84fdf5d·...·]-2">]</span><span·class="w"> |
| 278 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V5</span><span·class="p">.</span><span·class="mi">0</span><span·class="w">··</span><span·class="p"·data-group-id=" | 278 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V5</span><span·class="p">.</span><span·class="mi">0</span><span·class="w">··</span><span·class="p"·data-group-id="2411806187-3">(</span><span·class="ss">abort</span><span·class="w">·</span><span·class="ss">with</span><span·class="w">·</span><span·class="err">^</span><span·class="n">G</span><span·class="p"·data-group-id="2411806187-3">)</span><span·class="gp·unselectable"> |
| 279 | (ssl_test@myhost)1>·</span><span·class="nc">init</span><span·class="p">:</span><span·class="nf">get_arguments</span><span·class="p"·data-group-id=" | 279 | (ssl_test@myhost)1>·</span><span·class="nc">init</span><span·class="p">:</span><span·class="nf">get_arguments</span><span·class="p"·data-group-id="2411806187-4">(</span><span·class="p"·data-group-id="2411806187-4">)</span><span·class="p">.</span><span·class="w"> |
| 280 | </span><span·class="p"·data-group-id=" | 280 | </span><span·class="p"·data-group-id="2411806187-5">[</span><span·class="p"·data-group-id="2411806187-6">{</span><span·class="ss">root</span><span·class="p">,</span><span·class="p"·data-group-id="2411806187-7">[</span><span·class="s">"/usr/local/erlang"</span><span·class="p"·data-gro[·...·truncated·by·diffoscope;·len:·70,·SHA:·80d75b4ff1b7a6261521ebf92b49999f1690c08faf7dff66bd12f35cb0d340f2·...·]-6">}</span><span·class="p">,</span><span·class="w"> |
| 281 | ·</span><span·class="p"·data-group-id=" | 281 | ·</span><span·class="p"·data-group-id="2411806187-8">{</span><span·class="ss">progname</span><span·class="p">,</span><span·class="p"·data-group-id="2411806187-9">[</span><span·class="s">"erl·"</span><span·class="p"·data-group-id="2411806187-9">]</span><span·class="p"·data-group-id="24[·...·truncated·by·diffoscope;·len:·8,·SHA:·dfcc78bb187aaa96cca72b13c660ed644e9a7bdfd5dcfb8b7af11c9bdb3caaa3·...·]-8">}</span><span·class="p">,</span><span·class="w"> |
| 282 | ·</span><span·class="p"·data-group-id=" | 282 | ·</span><span·class="p"·data-group-id="2411806187-10">{</span><span·class="ss">sname</span><span·class="p">,</span><span·class="p"·data-group-id="2411806187-11">[</span><span·class="s">"ssl_test"</span><span·class="p"·data-group-id="2411806187-11">]</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·12,·SHA:·64368ac4de26a6ae0cb76ece12b2d1b515393cd8bf003cade4fcb2a4b060fbef·...·]-10">}</span><span·class="p">,</span><span·class="w"> |
| 283 | ·</span><span·class="p"·data-group-id="3669743153-12">{</span><span·class="ss">boot</span><span·class="p">,</span><span·class="p"·data-group-id="3669743153-13">[</span><span·class="s">"/home/me/ssl/start_ssl"</span><span·class="p"·data-group-id="3669743153-13">]</span><span·class="p"·data-group-id="3669743153-12">}</span><span·class="p">,</span><span·class="w"> | ||
| 284 | ·</span><span·class="p"·data-group-id=" | 283 | ·</span><span·class="p"·data-group-id="2411806187-12">{</span><span·class="ss">boot</span><span·class="p">,</span><span·class="p"·data-group-id="2411806187-13">[</span><span·class="s">"/home/me/ssl/start_ssl"</span><span·class="p"·data-group-id="2411806187-13">]</span><span·class="p"·[·...·truncated·by·diffoscope;·len:·28,·SHA:·6ab0011937cf5ba617c65e4ce1a0a698406df9c77d7dfd94d51041632ade3679·...·]">}</span><span·class="p">,</span><span·class="w"> |
| 284 | ·</span><span·class="p"·data-group-id="2411806187-14">{</span><span·class="ss">proto_dist</span><span·class="p">,</span><span·class="p"·data-group-id="2411806187-15">[</span><span·class="s">"inet_tls"</span><span·class="p"·data-group-id="2411806187-15">]</span><span·class="p"·data-group-id="2411806187-14">}</span><span·class="p">,</span><span·class="w"> | ||
| 285 | ·</span><span·class="p"·data-group-id=" | 285 | ·</span><span·class="p"·data-group-id="2411806187-16">{</span><span·class="ss">ssl_dist_opt</span><span·class="p">,</span><span·class="p"·data-group-id="2411806187-17">[</span><span·class="s">"server_certfile"</span><span·class="p">,</span><span·class="s">"/home/me/ssl/erlserver.[·...·truncated·by·diffoscope;·len:·111,·SHA:·b4c5b69bc322948952156f44a4e99530ef7055b2c2ba4b0d123ac441b9dad780·...·]-16">}</span><span·class="p">,</span><span·class="w"> |
| 286 | ·</span><span·class="p"·data-group-id=" | 286 | ·</span><span·class="p"·data-group-id="2411806187-18">{</span><span·class="ss">ssl_dist_opt</span><span·class="p">,</span><span·class="p"·data-group-id="2411806187-19">[</span><span·class="s">"server_secure_renegotiate"</span><span·class="p">,</span><span·class="s">"true"</span><span·class="p">,</span><span·class="w"> |
| 287 | ················</span><span·class="s">"client_secure_renegotiate"</span><span·class="p">,</span><span·class="s">"true"</span><span·class="p"·data-group-id=" | 287 | ················</span><span·class="s">"client_secure_renegotiate"</span><span·class="p">,</span><span·class="s">"true"</span><span·class="p"·data-group-id="2411806187-19">]</span><span·class="w"> |
| 288 | ·</span><span·class="p"·data-group-id=" | 288 | ·</span><span·class="p"·data-group-id="2411806187-20">{</span><span·class="ss">home</span><span·class="p">,</span><span·class="p"·data-group-id="2411806187-21">[</span><span·class="s">"/home/me"</span><span·class="p"·data-group-id="2411806187-21">]</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·11,·SHA:·f3e4033d02c032e342f4a7a91a1bb151e5e9931db12e205249ac277dc9faaa04·...·]-20">}</span><span·class="p">]</span></code></pre><p>The·<code·class="inline">init:get_arguments()</code>·call·verifies·that·the·correct·arguments·are·supplied |
| 289 | to·the·emulator.</p> | 289 | to·the·emulator.</p> |
| 290 | </div> | 290 | </div> |
| 291 | <div·class="bottom-actions"·id="bottom-actions"> | 291 | <div·class="bottom-actions"·id="bottom-actions"> |
| 292 | ··<div·class="bottom-actions-item"> | 292 | ··<div·class="bottom-actions-item"> |
| 293 | ······<a·href="using_ssl.html"·class="bottom-actions-button"·rel="prev"> | 293 | ······<a·href="using_ssl.html"·class="bottom-actions-button"·rel="prev"> |
| Offset 145, 113 lines modified | Offset 145, 113 lines modified | ||
| 145 | examples,·are·provided·using·the·<a·href="ssl.html#t:cert_key_conf/0"><code·class="inline">ssl:cert_key_conf/0</code></a>·supplied·in·the·<code·class="inline">certs_keys</code> | 145 | examples,·are·provided·using·the·<a·href="ssl.html#t:cert_key_conf/0"><code·class="inline">ssl:cert_key_conf/0</code></a>·supplied·in·the·<code·class="inline">certs_keys</code> |
| 146 | introduced·in·OTP·25.</p></section><h2·id="basic-client"·class="section-heading"> | 146 | introduced·in·OTP·25.</p></section><h2·id="basic-client"·class="section-heading"> |
| 147 | ··<a·href="#basic-client"·class="hover-link"> | 147 | ··<a·href="#basic-client"·class="hover-link"> |
| 148 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 148 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 149 | ··</a> | 149 | ··</a> |
| 150 | ··<span·class="text">Basic·Client</span> | 150 | ··<span·class="text">Basic·Client</span> |
| 151 | </h2> | 151 | </h2> |
| 152 | <pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">1</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ssl</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="3 | 152 | <pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">1</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ssl</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="3376492764-1">(</span><span·class="p"·data-group-id="3376492764-1">)</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">ssl</span><span·class="p">:</span><span·class="nf">connect</span><span·class="p"·data-group-id="3376492764-2">(</span[·...·truncated·by·diffoscope;·len:·429,·SHA:·78e84068ab2e7066d0a54f9c98a57776b6d7d3b528df4f7d4650574d89a0f6b1·...·]-4">}</span><span·class="p">,</span><span·class="w"> |
| 153 | ·················································</span><span·class="p"·data-group-id="3 | 153 | ·················································</span><span·class="p"·data-group-id="3376492764-5">{</span><span·class="ss">cacerts</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">public_key</span><span·class="p">:</span><span·class="nf">cacerts_get</span><span·class="p"·data-group-id="3376492764-6">(</span><span·clas[·...·truncated·by·diffoscope;·len:·190,·SHA:·af114ad05d0404f8b3197f66491a7cb1de35e88c87c2488c365a468f41e977f9·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 154 | ···</span><span·class="p"·data-group-id="3 | 154 | ···</span><span·class="p"·data-group-id="3376492764-7">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="3376492764-8">{</span><span·class="ss">sslsocket</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3376492764-9">[</spa[·...·truncated·by·diffoscope;·len:·221,·SHA:·0141453548ef45357c0be4f348992b0f89f0e195aa2d6f854b11345bcd12b9dc·...·]-7">}</span></code></pre><h2·id="basic-connection"·class="section-heading"> |
| 155 | ··<a·href="#basic-connection"·class="hover-link"> | 155 | ··<a·href="#basic-connection"·class="hover-link"> |
| 156 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 156 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 157 | ··</a> | 157 | ··</a> |
| 158 | ··<span·class="text">Basic·Connection</span> | 158 | ··<span·class="text">Basic·Connection</span> |
| 159 | </h2> | 159 | </h2> |
| 160 | <p><em>Step·1:</em>·Start·the·server·side:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">1</span><span·class="w">·</span><span·class="ss">server</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ssl</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 160 | <p><em>Step·1:</em>·Start·the·server·side:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">1</span><span·class="w">·</span><span·class="ss">server</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ssl</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="2803380349-1">(</span><span·class="p"·data-group-id="2803380349-1">)</span><span·class="p">.</span><span·class="w"> |
| 161 | </span><span·class="ss">ok</span></code></pre><p><em>Step·2:</em>·with·alternative·certificates,·in·this·example·the·EDDSA·certificate | 161 | </span><span·class="ss">ok</span></code></pre><p><em>Step·2:</em>·with·alternative·certificates,·in·this·example·the·EDDSA·certificate |
| 162 | will·be·preferred·if·TLS-1.3·is·negotiated·and·the·RSA·certificate·will·always | 162 | will·be·preferred·if·TLS-1.3·is·negotiated·and·the·RSA·certificate·will·always |
| 163 | be·used·for·TLS-1.2·as·it·does·not·support·the·EDDSA·algorithm:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">2</span><span·class="w">·</span><span·class="ss">server</span><span·class="o">></span><span·class="w">·</span><span·class="p"·data-group-id=" | 163 | be·used·for·TLS-1.2·as·it·does·not·support·the·EDDSA·algorithm:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">2</span><span·class="w">·</span><span·class="ss">server</span><span·class="o">></span><span·class="w">·</span><span·class="p"·data-group-id="5214586590-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ListenSocket</span><span·class="p"·data-group-id="5214586590-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 164 | </span><span·class="nc">ssl</span><span·class="p">:</span><span·class="nf">listen</span><span·class="p"·data-group-id=" | 164 | </span><span·class="nc">ssl</span><span·class="p">:</span><span·class="nf">listen</span><span·class="p"·data-group-id="5214586590-2">(</span><span·class="mi">9999</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5214586590-3">[</span><span·class="p"·data-group-id="5214586590-4">{</span><span·class="ss">certs_keys</span><span·class="p">,<[·...·truncated·by·diffoscope;·len:·124,·SHA:·e0a84903643a312b90460814a7a916316f99fa260ca6ed7514a1f1fff025f20d·...·]-6">#{</span><span·class="ss">certfile</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"eddsacert.pem"</span><span·class="p">,</span><span·class="w"> |
| 165 | ··································</span><span·class="ss">keyfile</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"eddsakey.pem"</span><span·class="p"·data-group-id=" | 165 | ··································</span><span·class="ss">keyfile</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"eddsakey.pem"</span><span·class="p"·data-group-id="5214586590-6">}</span><span·class="p">,</span><span·class="w"> |
| 166 | ································</span><span·class="p"·data-group-id=" | 166 | ································</span><span·class="p"·data-group-id="5214586590-7">#{</span><span·class="ss">certfile</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"rsacert.pem"</span><span·class="p">,</span><span·class="w"> |
| 167 | ··································</span><span·class="ss">keyfile</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"rsakey.pem"</span><span·class="p">,</span><span·class="w"> | 167 | ··································</span><span·class="ss">keyfile</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"rsakey.pem"</span><span·class="p">,</span><span·class="w"> |
| 168 | ··································</span><span·class="ss">password</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"foobar"</span><span·class="p"·data-group-id=" | 168 | ··································</span><span·class="ss">password</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"foobar"</span><span·class="p"·data-group-id="5214586590-7">}</span><span·class="w"> |
| 169 | ·······························</span><span·class="p"·data-group-id="9408945311-5">]</span><span·class="p"·data-group-id="9408945311-4">}</span><span·class="p">,</span><span·class="p"·data-group-id="9408945311-8">{</span><span·class="ss">reuseaddr</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">true</span><span·class="p"·data-group-id="9408945311-8">}</span><span·class="p"·data-group-id="9408945311-3">]</span><span·class="p"·data-group-id="9408945311-2">)</span><span·class="p">.</span><span·class="w"> | ||
| 170 | </span><span·class="p"·data-group-id="9408945311-9">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="9408945311-10">{</span><span·class="ss">sslsocket</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9408945311-11">[</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="9408945311-11">]</span><span·class="p"·data-group-id="9408945311-10">}</span><span·class="p"·data-group-id="9408945311-9">}</span></code></pre><p><em>Step·3:</em>·Do·a·transport·accept·on·the·TLS·listen·socket:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">3</span><span·class="w">·</span><span·class="ss">server</span><span·class="o">></span><span·class="w">·</span><span·class="p"·data-group-id="3479988304-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">TLSTransportSocket</span><span·class="p"·data-group-id="3479988304-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ssl</span><span·class="p">:</span><span·class="nf">transport_accept</span><span·class="p"·data-group-id="3479988304-2">(</span><span·class="n">ListenSocket</span><span·class="p"·data-group-id="3479988304-2">)</span><span·class="p">.</span><span·class="w"> | ||
| 171 | 169 | ·······························</span><span·class="p"·data-group-id="5214586590-5">]</span><span·class="p"·data-group-id="5214586590-4">}</span><span·class="p">,</span><span·class="p"·data-group-id="5214586590-8">{</span><span·class="ss">reuseaddr</span><s[·...·truncated·by·diffoscope;·len:·273,·SHA:·ab7714e6961daf5f3715e2fe160c21082e541556df55f56b4e912fbf6b5149df·...·] | |
| 170 | </span><span·class="p"·data-group-id="5214586590-9">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="5214586590-10">{</span><span·class="ss">sslsocket</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5214586590-11">[</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="5214586590-11">]</span><span·class="p"·data-group-id="5214586590-10">}</span><span·class="p"·data-group-id="5214586590-9">}</span></code></pre><p><em>Step·3:</em>·Do·a·transport·accept·on·the·TLS·listen·socket:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">3</span><span·class="w">·</span><span·class="ss">server</span><span·class="o">></span><span·class="w">·</span><span·class="p"·data-group-id="2061904813-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">TLSTransportSocket</span><span·class="p"·data-group-id="2061904813-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ssl</span><span·class="p">:</span><span·class="nf">transport_accept</span><span·class="p"·data-group-id="2061904813-2">(</span><span·class="n">ListenSocket</span><span·class="p"·data-group-id="2061904813-2">)</span><span·class="p">.</span><span·class="w"> | ||
| 171 | </span><span·class="p"·data-group-id="2061904813-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="2061904813-4">{</span><span·class="ss">sslsocket</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2061904813-5">[</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="2061904813-5">]</span><span·class="p"·data-group-id="2061904813-4">}</span><span·class="p"·data-group-id="2061904813-3">}</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>ssl:transport_accept/1·and·ssl:handshake/2·are·separate·functions·so·that·the | ||
| 172 | handshake·part·can·be·called·in·a·new·erlang·process·dedicated·to·handling·the | 172 | handshake·part·can·be·called·in·a·new·erlang·process·dedicated·to·handling·the |
| 173 | connection</p></section><p><em>Step·4:</em>·Start·the·client·side:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">1</span><span·class="w">·</span><span·class="ss">client</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ssl</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 173 | connection</p></section><p><em>Step·4:</em>·Start·the·client·side:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">1</span><span·class="w">·</span><span·class="ss">client</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ssl</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="2952023340-1">(</span><span·class="p"·data-group-id="2952023340-1">)</span><span·class="p">.</span><span·class="w"> |
| 174 | </span><span·class="ss">ok</span></code></pre><p>Be·sure·to·configure·trusted·certificates·to·use·for·server·certificate | 174 | </span><span·class="ss">ok</span></code></pre><p>Be·sure·to·configure·trusted·certificates·to·use·for·server·certificate |
| 175 | verification.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">2</span><span·class="w">·</span><span·class="ss">client</span><span·class="o">></span><span·class="w">·</span><span·class="p"·data-group-id=" | 175 | verification.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">2</span><span·class="w">·</span><span·class="ss">client</span><span·class="o">></span><span·class="w">·</span><span·class="p"·data-group-id="1094734576-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Socket</span><span·class="p"·data-group-id="1094734576-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·[·...·truncated·by·diffoscope;·len:·117,·SHA:·5c271bc6fbc640a802feec36ea82b5c83049e6fd49e88fd36fb0cd0b45ea0820·...·]-2">(</span><span·class="s">"localhost"</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">9999</span><span·class="p">,</span><span·class="w"> |
| 176 | ······</span><span·class="p"·data-group-id=" | 176 | ······</span><span·class="p"·data-group-id="1094734576-3">[</span><span·class="p"·data-group-id="1094734576-4">{</span><span·class="ss">verify</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">verify_peer</span><span·class="p"·data-group-id="1094734576-4">}</span><span·class="p">,</span><span·class="w"> |
| 177 | ······</span><span·class="p"·data-group-id=" | 177 | ······</span><span·class="p"·data-group-id="1094734576-5">{</span><span·class="ss">cacertfile</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"cacerts.pem"</span><span·class="p"·data-group-id="1094734576-5">}</span><span·class="p">,</span><span·class="w">·</span><span[·...·truncated·by·diffoscope;·len:·381,·SHA:·e2670fcba6832a7941b3b50f896f3d06c1ced75c2b5ac210822d39bcaacc95ef·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 178 | </span><span·class="p"·data-group-id="5072432323-7">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="5072432323-8">{</span><span·class="ss">sslsocket</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5072432323-9">[</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="5072432323-9">]</span><span·class="p"·data-group-id="5072432323-8">}</span><span·class="p"·data-group-id="5072432323-7">}</span></code></pre><p><em>Step·5:</em>·Do·the·TLS·handshake:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">4</span><span·class="w">·</span><span·class="ss">server</span><span·class="o">></span><span·class="w">·</span><span·class="p"·data-group-id="1502262665-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Socket</span><span·class="p"·data-group-id="1502262665-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ssl</span><span·class="p">:</span><span·class="nf">handshake</span><span·class="p"·data-group-id="1502262665-2">(</span><span·class="n">TLSTransportSocket</span><span·class="p"·data-group-id="1502262665-2">)</span><span·class="p">.</span><span·class="w"> | ||
| 179 | </span><span·class="p"·data-group-id="1 | 178 | </span><span·class="p"·data-group-id="1094734576-7">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="1094734576-8">{</span><span·class="ss">sslsocket</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1094734576-9">[</spa[·...·truncated·by·diffoscope;·len:·1021,·SHA:·c7474bc416729db1168f68f1a63f08e4a4ab34470752d0a6cb2c09046b49aac9·...·] |
| 179 | </span><span·class="p"·data-group-id="6601347059-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="6601347059-4">{</span><span·class="ss">sslsocket</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6601347059-5">[</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="6601347059-5">]</span><span·class="p"·data-group-id="6601347059-4">}</span><span·class="p"·data-group-id="6601347059-3">}</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>A·real·server·should·use·ssl:handshake/2·that·has·a·timeout·to·avoid·DoS | ||
| 180 | attacks.·In·the·example·the·timeout·defaults·to·infinty.</p></section><p><em>Step·6:</em>·Send·a·message·over·TLS:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">5</span><span·class="w">·</span><span·class="ss">server</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ssl</span><span·class="p">:</span><span·class="nf">send</span><span·class="p"·data-group-id=" | 180 | attacks.·In·the·example·the·timeout·defaults·to·infinty.</p></section><p><em>Step·6:</em>·Send·a·message·over·TLS:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">5</span><span·class="w">·</span><span·class="ss">server</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ssl</span><span·class="p">:</span><span·class="nf">send</span><span·class="p"·data-group-id="2918351421-1">(</span><span·class="n">Socket</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"foo"</span><span·class="p"·data-group-id="2918351421-1">)</span><span·class="p">.</span><span·class="w"> |
| 181 | </span><span·class="ss">ok</span></code></pre><p><em>Step·7:</em>·Flush·the·shell·message·queue·to·see·that·the·message·sent·on·the | 181 | </span><span·class="ss">ok</span></code></pre><p><em>Step·7:</em>·Flush·the·shell·message·queue·to·see·that·the·message·sent·on·the |
| 182 | server·side·is·recived·by·the·client·side:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">3</span><span·class="w">·</span><span·class="ss">client</span><span·class="o">></span><span·class="w">·</span><span·class="nf">flush</span><span·class="p"·data-group-id="0 | 182 | server·side·is·recived·by·the·client·side:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">3</span><span·class="w">·</span><span·class="ss">client</span><span·class="o">></span><span·class="w">·</span><span·class="nf">flush</span><span·class="p"·data-group-id="0148359476-1">(</span><span·class="p"·data-group-id="0148359476-1">)</span><span·class="p">.</span><span·class="w"> |
| 183 | </span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="p"·data-group-id="0 | 183 | </span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="p"·data-group-id="0148359476-2">{</span><span·class="ss">ssl</span><span·class="p">,</span><span·class="p"·data-group-id="0148359476-3">{</span><span·class="ss">sslsocket</span><span·class="p">,</span><span·class="p"·data-group-id="0148359476-4">[</span><span·class="p">.</sp[·...·truncated·by·diffoscope;·len:·260,·SHA:·3b13f37ecf692b1df07bb630ba028b64258164183cc2696e8183ae6600e76b90·...·]-2">}</span><span·class="w"> |
| 184 | </span><span·class="ss">ok</span></code></pre><h2·id="upgrade-example-tls-only"·class="section-heading"> | 184 | </span><span·class="ss">ok</span></code></pre><h2·id="upgrade-example-tls-only"·class="section-heading"> |
| 185 | ··<a·href="#upgrade-example-tls-only"·class="hover-link"> | 185 | ··<a·href="#upgrade-example-tls-only"·class="hover-link"> |
| 186 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 186 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 187 | ··</a> | 187 | ··</a> |
| 188 | ··<span·class="text">Upgrade·Example·-·TLS·only</span> | 188 | ··<span·class="text">Upgrade·Example·-·TLS·only</span> |
| 189 | </h2> | 189 | </h2> |
| 190 | <p>Upgrading·a·a·TCP/IP·connection·to·a·TLS·connections·is·mostly·used·when·there | 190 | <p>Upgrading·a·a·TCP/IP·connection·to·a·TLS·connections·is·mostly·used·when·there |
| 191 | is·a·desire·have·unencrypted·communication·first·and·then·later·secure·the | 191 | is·a·desire·have·unencrypted·communication·first·and·then·later·secure·the |
| 192 | communication·channel·by·using·TLS.·Note·that·the·client·and·server·need·to | 192 | communication·channel·by·using·TLS.·Note·that·the·client·and·server·need·to |
| 193 | agree·to·do·the·upgrade·in·the·protocol·doing·the·communication.·This·is·concept | 193 | agree·to·do·the·upgrade·in·the·protocol·doing·the·communication.·This·is·concept |
| 194 | is·often·referenced·as·<code·class="inline">STARTLS</code>·and·used·in·many·protocols·such·as·<code·class="inline">SMTP</code>, | 194 | is·often·referenced·as·<code·class="inline">STARTLS</code>·and·used·in·many·protocols·such·as·<code·class="inline">SMTP</code>, |
| 195 | <code·class="inline">FTPS</code>·and·<code·class="inline">HTTPS</code>·via·a·proxy.</p><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>Maximum·security·recommendations·are·however·moving·away·from·such·solutions.</p></section><p>To·upgrade·to·a·TLS·connection:</p><p><em>Step·1:</em>·Start·the·server·side:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">1</span><span·class="w">·</span><span·class="ss">server</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ssl</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 195 | <code·class="inline">FTPS</code>·and·<code·class="inline">HTTPS</code>·via·a·proxy.</p><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>Maximum·security·recommendations·are·however·moving·away·from·such·solutions.</p></section><p>To·upgrade·to·a·TLS·connection:</p><p><em>Step·1:</em>·Start·the·server·side:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">1</span><span·class="w">·</span><span·class="ss">server</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ssl</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="4164661123-1">(</span><span·class="p"·data-group-id="4164661123-1">)</span><span·class="p">.</span><span·class="w"> |
| 196 | ··</span><span·class="ss">ok</span></code></pre><p><em>Step·2:</em>·Create·a·normal·TCP·listen·socket·and·ensure·<code·class="inline">active</code>·is·set·to | 196 | ··</span><span·class="ss">ok</span></code></pre><p><em>Step·2:</em>·Create·a·normal·TCP·listen·socket·and·ensure·<code·class="inline">active</code>·is·set·to |
| 197 | <code·class="inline">false</code>·and·not·set·to·any·active·mode·otherwise·TLS·handshake·messages·can·be | 197 | <code·class="inline">false</code>·and·not·set·to·any·active·mode·otherwise·TLS·handshake·messages·can·be |
| 198 | delivered·to·the·wrong·process.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">2</span><span·class="w">·</span><span·class="ss">server</span><span·class="o">></span><span·class="w">·</span><span·class="p"·data-group-id=" | 198 | delivered·to·the·wrong·process.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">2</span><span·class="w">·</span><span·class="ss">server</span><span·class="o">></span><span·class="w">·</span><span·class="p"·data-group-id="3455237537-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ListenSocket</span><span·class="p"·data-group-id="3455237537-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span>[·...·truncated·by·diffoscope;·len:·470,·SHA:·1c33a0cca700823ecdf836ac9fc6f8781a07287b685e3669916fe3de74ad5c22·...·]-4">}</span><span·class="p">,</span><span·class="w"> |
| 199 | ··</span><span·class="p"·data-group-id=" | 199 | ··</span><span·class="p"·data-group-id="3455237537-5">{</span><span·class="ss">active</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">false</span><span·class="p"·data-group-id="3455237537-5">}</span><span·class="p"·data-group-id="3455237537-3">]</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·20,·SHA:·7d318b40176bb2cce996127c20917b87b909e2d3444a06458511bd44436ac062·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 200 | ··</span><span·class="p"·data-group-id=" | 200 | ··</span><span·class="p"·data-group-id="3455237537-6">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p">#</span><span·class="n">Port</span><span·class="o"><</span><span·class="mf">0.475</span><span·class="o">></span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·762,·SHA:·9db07c98aa7e8bc10254b6d783f30d14370c8c3b7235e2632fa3d4afa9895a98·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 201 | ··</span><span·class="p"·data-group-id=" | 201 | ··</span><span·class="p"·data-group-id="1913806510-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p">#</span><span·class="n">Port</span><span·class="o"><</span><span·class="mf">0.476</span><span·class="o">></span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·438,·SHA:·73a096d25041176760c79e3870799143f7f74b8606faab96b81b04a7768f8b29·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 202 | ··</span><span·class="ss">ok</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">2</span><span·class="w">·</span><span·class="ss">client</span><span·class="o">></span><span·class="w">·</span><span·class="p"·data-group-id=" | 202 | ··</span><span·class="ss">ok</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">2</span><span·class="w">·</span><span·class="ss">client</span><span·class="o">></span><span·class="w">·</span><span·class="p"·data-group-id="6327495404-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Socket</span><span·class="p"·data-group-id="6327495404-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·[·...·truncated·by·diffoscope;·len:·1559,·SHA:·ed2025d29d3de0b308822effde7b79b46dda050b3e21417a80458628fa2e2412·...·]-4">}</span><span·class="p">,</span><span·class="w"> |
| 203 | ··</span><span·class="p"·data-group-id="8 | 203 | ··</span><span·class="p"·data-group-id="8904512953-5">{</span><span·class="ss">fail_if_no_peer_cert</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">true</span><span·class="p"·data-group-id="8904512953-5">}</span><span·class="p">,</span><span·class="w"> |
| 204 | ··</span><span·class="p"·data-group-id="8 | 204 | ··</span><span·class="p"·data-group-id="8904512953-6">{</span><span·class="ss">cacertfile</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"cacerts.pem"</span><span·class="p"·data-group-id="8904512953-6">}</span><span·class="p">,</span><span·class="w"> |
| 205 | ··</span><span·class="p"·data-group-id="8293380155-7">{</span><span·class="ss">certs_keys</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8293380155-8">[</span><span·class="p"·data-group-id="8293380155-9">#{</span><span·class="ss">certfile</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"cert.pem"</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">keyfile</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"key.pem"</span><span·class="p"·data-group-id="8293380155-9">}</span><span·class="p"·data-group-id="8293380155-8">]</span><span·class="p"·data-group-id="8293380155-7">}</span><span·class="p"·data-group-id="8293380155-3">]</span><span·class="p"·data-group-id="8293380155-2">)</span><span·class="p">.</span><span·class="w"> | ||
| 206 | ··</span><span·class="p"·data-group-id="8 | 205 | ··</span><span·class="p"·data-group-id="8904512953-7">{</span><span·class="ss">certs_keys</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8904512953-8">[</span><span·class="p"·data-group-id="8904512953-9">#{</span><span·class="ss">certfile</span><span·class="w[·...·truncated·by·diffoscope;·len:·607,·SHA:·96b68e6d80124e34e1a9f4a482ed0f72582e2e75ecb1f5080a84e29892f8d9ff·...·] |
| 206 | ··</span><span·class="p"·data-group-id="8904512953-10">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="8904512953-11">{</span><span·class="ss">sslsocket</span><span·class="p">,</span><span·class="p"·data-group-id="8904512953-12">[</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="8904512953-12">]</span><span·class="p"·data-group-id="8904512953-11">}</span><span·class="p"·data-group-id="8904512953-10">}</span></code></pre><p><em>Step·6:</em>·Upgrade·to·a·TLS·connection.·The·client·and·server·must·agree·upon·the | ||
| 207 | upgrade.·The·server·must·be·prepared·to·be·a·TLS·server·before·the·client·can·do | 207 | upgrade.·The·server·must·be·prepared·to·be·a·TLS·server·before·the·client·can·do |
| 208 | a·successful·connect.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">3</span><span·class="w">·</span><span·class="ss">client</span><span·class="o">></span><span·class="p"·data-group-id=" | 208 | a·successful·connect.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">3</span><span·class="w">·</span><span·class="ss">client</span><span·class="o">></span><span·class="p"·data-group-id="5037724304-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">TLSSocket</span><span·class="p"·data-group-id="5037724304-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><sp[·...·truncated·by·diffoscope;·len:·469,·SHA:·c315f170aacaebbc8b9ca5b62f4c38a54b85278258f36d44a3f2a159a0ee4164·...·]-4">}</span><span·class="p">,</span><span·class="w"> |
| 209 | ··</span><span·class="p"·data-group-id=" | 209 | ··</span><span·class="p"·data-group-id="5037724304-5">{</span><span·class="ss">cacertfile</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"cacerts.pem"</span><span·class="p"·data-group-id="5037724304-5">}</span><span·class="p">,</span><span·class="w"> |
| 210 | ··</span><span·class="p"·data-group-id=" | 210 | ··</span><span·class="p"·data-group-id="5037724304-6">{</span><span·class="ss">certs_keys</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5037724304-7">[</span><span·class="p"·data-group-id="5037724304-8">#{</span><span·class="ss">certfile</span><span·class="[·...·truncated·by·diffoscope;·len:·636,·SHA:·6d11b5942dd121d60595e44010006edd733fc9c5479a02d58afcd37815652527·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 211 | </span><span·class="p"·data-group-id=" | 211 | </span><span·class="p"·data-group-id="5037724304-9">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="5037724304-10">{</span><span·class="ss">sslsocket</span><span·class="p">,</span><span·class="p"·data-group-id="5037724304-11">[</span><span·class="p">.</[·...·truncated·by·diffoscope;·len:·744,·SHA:·c6e62c0bae73ca1749c402eada1f62c160ed9a43dba0f2ef87722066ca7e7851·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 212 | ······</span><span·class="ss">ok</span></code></pre><p><em>Step·8:</em>·Set·<code·class="inline">active·once</code>·on·the·TLS·socket:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">5</span><span·class="w">·</span><span·class="ss">server</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ssl</span><span·class="p">:</span><span·class="nf">setopts</span><span·class="p"·data-group-id=" | 212 | ······</span><span·class="ss">ok</span></code></pre><p><em>Step·8:</em>·Set·<code·class="inline">active·once</code>·on·the·TLS·socket:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">5</span><span·class="w">·</span><span·class="ss">server</span><span·class="o">></span><span·class="w">·</span><span·class="nc">ssl</span><span·class="p">:</span><span·class="nf">setopts</span><span·class="p"·data-group-id="1608604646-1">(</span><span·class="n">TLSSocket</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1608604646-2">[</span><span·class="p"·data-group-id="1608604646-3">{</span><span·class="ss">active</span><span·class="p">,<[·...·truncated·by·diffoscope;·len:·205,·SHA:·82a2a8fa03745ff09687e13f455a86d59c31c26ba7a35f677dd7f7258e1e6177·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 213 | ······</span><span·class="ss">ok</span></code></pre><p><em>Step·9:</em>·Flush·the·shell·message·queue·to·see·that·the·message·sent·on·the | 213 | ······</span><span·class="ss">ok</span></code></pre><p><em>Step·9:</em>·Flush·the·shell·message·queue·to·see·that·the·message·sent·on·the |
| 214 | client·side·is·recived·by·the·server·side:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">5</span><span·class="w">·</span><span·class="ss">server</span><span·class="o">></span><span·class="w">·</span><span·class="nf">flush</span><span·class="p"·data-group-id=" | 214 | client·side·is·recived·by·the·server·side:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">5</span><span·class="w">·</span><span·class="ss">server</span><span·class="o">></span><span·class="w">·</span><span·class="nf">flush</span><span·class="p"·data-group-id="3611757058-1">(</span><span·class="p"·data-group-id="3611757058-1">)</span><span·class="p">.</span><span·class="w"> |
| 215 | ······</span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="p"·data-group-id=" | 215 | ······</span><span·class="n">Shell</span><span·class="w">·</span><span·class="ss">got</span><span·class="w">·</span><span·class="p"·data-group-id="3611757058-2">{</span><span·class="ss">ssl</span><span·class="p">,</span><span·class="p"·data-group-id="3611757058-3">{</span><span·class="ss">sslsocket</span><span·class="p">,</span><span·class="p"·data-group-id="3611757058-4">[</span><span·class="p">.</s[·...·truncated·by·diffoscope;·len:·261,·SHA:·f0b6c67a376b77e86c8b4a4784d10b6eaad6a9fefb0f112ddfa76fb80aad3c04·...·]-2">}</span><span·class="w"> |
| 216 | ······</span><span·class="ss">ok</span></code></pre><h2·id="customizing-cipher-suites"·class="section-heading"> | 216 | ······</span><span·class="ss">ok</span></code></pre><h2·id="customizing-cipher-suites"·class="section-heading"> |
| 217 | ··<a·href="#customizing-cipher-suites"·class="hover-link"> | 217 | ··<a·href="#customizing-cipher-suites"·class="hover-link"> |
| 218 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 218 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 219 | ··</a> | 219 | ··</a> |
| 220 | ··<span·class="text">Customizing·cipher·suites</span> | 220 | ··<span·class="text">Customizing·cipher·suites</span> |
| 221 | </h2> | 221 | </h2> |
| 222 | <p>Fetch·default·cipher·suite·list·for·a·TLS/DTLS·version.·Change·default·to·all·to | 222 | <p>Fetch·default·cipher·suite·list·for·a·TLS/DTLS·version.·Change·default·to·all·to |
| 223 | get·all·possible·cipher·suites.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="w">·</span><span·class="n">Default</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ssl</span><span·class="p">:</span><span·class="nf">cipher_suites</span><span·class="p"·data-group-id=" | 223 | get·all·possible·cipher·suites.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="w">·</span><span·class="n">Default</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ssl</span><span·class="p">:</span><span·class="nf">cipher_suites</span><span·class="p"·data-group-id="8636886846-1">(</span><span·class="ss">default</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'tlsv1.2'</span><span·class="p"·data-group-id="8636886846-1">)</span><span·class="p">.</span><span·class="w"> |
| 224 | ····</span><span·class="p"·data-group-id=" | 224 | ····</span><span·class="p"·data-group-id="8636886846-2">[</span><span·class="p"·data-group-id="8636886846-3">#{</span><span·class="ss">cipher</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">aes_256_gcm</span><span·class="p">,</span><span·class="ss">key_exchange</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">ecdhe_ecdsa</span><span·class="p">,</span><span·class="w"> |
| 225 | ····</span><span·class="ss">mac</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">aead</span><span·class="p">,</span><span·class="ss">prf</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">sha384</span><span·class="p"·data-group-id=" | 225 | ····</span><span·class="ss">mac</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">aead</span><span·class="p">,</span><span·class="ss">prf</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">sha384</span><span·class="p"·data-group-id="8636886846-3">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="8636886846-2">]</span></code></pre><p>In·OTP·20·it·is·desirable·to·remove·all·cipher·suites·that·uses·rsa·key·exchange |
| 226 | (removed·from·default·in·21)</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="n">NoRSA</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 226 | (removed·from·default·in·21)</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="n">NoRSA</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 227 | ····</span><span·class="nc">ssl</span><span·class="p">:</span><span·class="nf">filter_cipher_suites</span><span·class="p"·data-group-id="67 | 227 | ····</span><span·class="nc">ssl</span><span·class="p">:</span><span·class="nf">filter_cipher_suites</span><span·class="p"·data-group-id="6702557728-1">(</span><span·class="n">Default</span><span·class="p">,</span><span·class="w"> |
| 228 | ·····························</span><span·class="p"·data-group-id="67 | 228 | ·····························</span><span·class="p"·data-group-id="6702557728-2">[</span><span·class="p"·data-group-id="6702557728-3">{</span><span·class="ss">key_exchange</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="6702557728-4">(</span><span·class="ss">rs[·...·truncated·by·diffoscope;·len:·49,·SHA:·259f9626f3058113aa51d23b19a3bbb5d82f40077702a3c54e65220e0ff556cb·...·]-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">false</span><span·class="p">;</span><span·class="w"> |
| 229 | ················································</span><span·class="p"·data-group-id="67 | 229 | ················································</span><span·class="p"·data-group-id="6702557728-5">(</span><span·class="p">_</span><span·class="p"·data-group-id="6702557728-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">true</span><span·class="w"> |
| 230 | ·············································</span><span·class="k">end</span><span·class="p"·data-group-id="67 | 230 | ·············································</span><span·class="k">end</span><span·class="p"·data-group-id="6702557728-3">}</span><span·class="p"·data-group-id="6702557728-2">]</span><span·class="p"·data-group-id="6702557728-1">)</span><span·class="p">.</span><span·class="w"> |
| 231 | ····</span><span·class="p"·data-group-id="67 | 231 | ····</span><span·class="p"·data-group-id="6702557728-6">[</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="6702557728-6">]</span></code></pre><p>Pick·just·a·few·suites</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">3</span><span·class="o">></span><span·class="w">·</span><span·class="n">Suites</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 232 | ·</span><span·class="nc">ssl</span><span·class="p">:</span><span·class="nf">filter_cipher_suites</span><span·class="p"·data-group-id=" | 232 | ·</span><span·class="nc">ssl</span><span·class="p">:</span><span·class="nf">filter_cipher_suites</span><span·class="p"·data-group-id="7945139916-1">(</span><span·class="n">Default</span><span·class="p">,</span><span·class="w"> |
| 233 | ·····························</span><span·class="p"·data-group-id=" | 233 | ·····························</span><span·class="p"·data-group-id="7945139916-2">[</span><span·class="p"·data-group-id="7945139916-3">{</span><span·class="ss">key_exchange</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="7945139916-4">(</span><span·class="ss">[·...·truncated·by·diffoscope;·len:·58,·SHA:·1cc53ec1dea296a14bca1c9ecb0b9ecc68748d9943243f66ae95d26f001d8fa1·...·]-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> |
| 234 | ················································</span><span·class="p"·data-group-id=" | 234 | ················································</span><span·class="p"·data-group-id="7945139916-5">(</span><span·class="p">_</span><span·class="p"·data-group-id="7945139916-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">false</span><span·class="w"> |
| 235 | ·············································</span><span·class="k">end</span><span·class="p"·data-group-id=" | 235 | ·············································</span><span·class="k">end</span><span·class="p"·data-group-id="7945139916-3">}</span><span·class="p">,</span><span·class="w"> |
| 236 | ······························</span><span·class="p"·data-group-id=" | 236 | ······························</span><span·class="p"·data-group-id="7945139916-6">{</span><span·class="ss">cipher</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="7945139916-7">(</span><span·class="ss">aes_128_cbc</span><span·class="p"·data-group-id="7945139916-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> |
| 237 | ··········································</span><span·class="p"·data-group-id=" | 237 | ··········································</span><span·class="p"·data-group-id="7945139916-8">(</span><span·class="p">_</span><span·class="p"·data-group-id="7945139916-8">)</span><span·class="w">·</span><span·class="p">-></span><span·class="ss">false</span><span·class="w"> |
| 238 | ·······································</span><span·class="k">end</span><span·class="p"·data-group-id=" | 238 | ·······································</span><span·class="k">end</span><span·class="p"·data-group-id="7945139916-6">}</span><span·class="p"·data-group-id="7945139916-2">]</span><span·class="p"·data-group-id="7945139916-1">)</span><span·class="p">.</span><span·class="w"> |
| 239 | </span><span·class="p"·data-group-id=" | 239 | </span><span·class="p"·data-group-id="7945139916-9">[</span><span·class="p"·data-group-id="7945139916-10">#{</span><span·class="ss">cipher</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">aes_128_cbc</span><span·class="p">,</span><span·class="ss">key_exchange</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">ecdh_ecdsa</span><span·class="p">,</span><span·class="w"> |
| 240 | ···</span><span·class="ss">mac</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">sha256</span><span·class="p">,</span><span·class="ss">prf</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">sha256</span><span·class="p"·data-group-id=" | 240 | ···</span><span·class="ss">mac</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">sha256</span><span·class="p">,</span><span·class="ss">prf</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">sha256</span><span·class="p"·data-group-id="7945139916-10">}</span><span·class="p">,</span><span·class="w"> |
| 241 | ·</span><span·class="p"·data-group-id=" | 241 | ·</span><span·class="p"·data-group-id="7945139916-11">#{</span><span·class="ss">cipher</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">aes_128_cbc</span><span·class="p">,</span><span·class="ss">key_exchange</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">ecdh_ecdsa</span><span·class="p">,</span><span·class="ss">mac</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">sha</span><span·class="p">,</span><span·class="w"> |
| 242 | ···</span><span·class="ss">prf</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">default_prf</span><span·class="p"·data-group-id=" | 242 | ···</span><span·class="ss">prf</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">default_prf</span><span·class="p"·data-group-id="7945139916-11">}</span><span·class="p"·data-group-id="7945139916-9">]</span></code></pre><p>Make·some·particular·suites·the·most·preferred,·or·least·preferred·by·changing |
| 243 | prepend·to·append.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">4</span><span·class="o">></span><span·class="nc">ssl</span><span·class="p">:</span><span·class="nf">prepend_cipher_suites</span><span·class="p"·data-group-id=" | 243 | prepend·to·append.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">4</span><span·class="o">></span><span·class="nc">ssl</span><span·class="p">:</span><span·class="nf">prepend_cipher_suites</span><span·class="p"·data-group-id="3867966971-1">(</span><span·class="n">Suites</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Default</span><span·class="p"·data-group-id="3867966971-1">)</span><span·class="p">.</span><span·class="w"> |
| 244 | ··</span><span·class="p"·data-group-id=" | 244 | ··</span><span·class="p"·data-group-id="3867966971-2">[</span><span·class="p"·data-group-id="3867966971-3">#{</span><span·class="ss">cipher</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">aes_128_cbc</span><span·class="p">,</span><span·class="ss">key_exchange</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">ecdh_ecdsa</span><span·class="p">,</span><span·class="w"> |
| 245 | ·····</span><span·class="ss">mac</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">sha256</span><span·class="p">,</span><span·class="ss">prf</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">sha256</span><span·class="p"·data-group-id=" | 245 | ·····</span><span·class="ss">mac</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">sha256</span><span·class="p">,</span><span·class="ss">prf</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">sha256</span><span·class="p"·data-group-id="3867966971-3">}</span><span·class="p">,</span><span·class="w"> |
| 246 | ···</span><span·class="p"·data-group-id=" | 246 | ···</span><span·class="p"·data-group-id="3867966971-4">#{</span><span·class="ss">cipher</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">aes_128_cbc</span><span·class="p">,</span><span·class="ss">key_exchange</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">ecdh_ecdsa</span><span·class="p">,</span><span·class="ss">mac</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">sha</span><span·class="p">,</span><span·class="w"> |
| 247 | ·····</span><span·class="ss">prf</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">default_prf</span><span·class="p"·data-group-id=" | 247 | ·····</span><span·class="ss">prf</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">default_prf</span><span·class="p"·data-group-id="3867966971-4">}</span><span·class="p">,</span><span·class="w"> |
| 248 | ···</span><span·class="p"·data-group-id=" | 248 | ···</span><span·class="p"·data-group-id="3867966971-5">#{</span><span·class="ss">cipher</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">aes_256_cbc</span><span·class="p">,</span><span·class="ss">key_exchange</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">ecdhe_ecdsa</span><span·class="p">,</span><span·class="w"> |
| 249 | ·····</span><span·class="ss">mac</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">sha384</span><span·class="p">,</span><span·class="ss">prf</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">sha384</span><span·class="p"·data-group-id=" | 249 | ·····</span><span·class="ss">mac</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">sha384</span><span·class="p">,</span><span·class="ss">prf</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">sha384</span><span·class="p"·data-group-id="3867966971-5">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="3867966971-2">]</span></code></pre><h2·id="customizing-signature-algorithms-tls-1-2-schemes-tls-1-3"·class="section-heading"> |
| 250 | ··<a·href="#customizing-signature-algorithms-tls-1-2-schemes-tls-1-3"·class="hover-link"> | 250 | ··<a·href="#customizing-signature-algorithms-tls-1-2-schemes-tls-1-3"·class="hover-link"> |
| 251 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 251 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 252 | ··</a> | 252 | ··</a> |
| 253 | ··<span·class="text">Customizing·signature·algorithms(TLS-1.2)/schemes(TLS-1.3)</span> | 253 | ··<span·class="text">Customizing·signature·algorithms(TLS-1.2)/schemes(TLS-1.3)</span> |
| 254 | </h2> | 254 | </h2> |
| 255 | <p>Starting·from·TLS-1.2·signature·algorithms·(called·signature·schemes·in·TLS-1.3) | 255 | <p>Starting·from·TLS-1.2·signature·algorithms·(called·signature·schemes·in·TLS-1.3) |
| 256 | is·something·that·can·be·negotiated·and·hence·also·configured.·These | 256 | is·something·that·can·be·negotiated·and·hence·also·configured.·These |
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| 261 | versions·are·supported·the·configuration·can·be·a·mix·of·these·as·both | 261 | versions·are·supported·the·configuration·can·be·a·mix·of·these·as·both |
| 262 | versions·might·be·negotiated.·All·<code·class="inline">rsa_pss</code>·based·schemes·are·back·ported·to | 262 | versions·might·be·negotiated.·All·<code·class="inline">rsa_pss</code>·based·schemes·are·back·ported·to |
| 263 | TLS-1.2·and·can·be·used·also·in·a·TLS-1.2·configuration.·In·TLS-1.2·the | 263 | TLS-1.2·and·can·be·used·also·in·a·TLS-1.2·configuration.·In·TLS-1.2·the |
| 264 | signature·algorithms·chosen·by·the·server·will·also·be·affected·by·the·chiper | 264 | signature·algorithms·chosen·by·the·server·will·also·be·affected·by·the·chiper |
| 265 | suite·that·is·chosen,·which·is·not·the·case·in·TLS-1.3.</p></section><p>Using·the·function·<a·href="ssl.html#signature_algs/2"><code·class="inline">ssl:signature_algs/2</code></a>·will·let·you·inspect·different·aspects | 265 | suite·that·is·chosen,·which·is·not·the·case·in·TLS-1.3.</p></section><p>Using·the·function·<a·href="ssl.html#signature_algs/2"><code·class="inline">ssl:signature_algs/2</code></a>·will·let·you·inspect·different·aspects |
| 266 | of·possible·configurations·for·your·system.·For·example·if·TLS-1.3·and·TLS-1.2 | 266 | of·possible·configurations·for·your·system.·For·example·if·TLS-1.3·and·TLS-1.2 |
| 267 | is·supported·the·default·signature_algorithm·list·in·OTP-26·and·cryptolib·from | 267 | is·supported·the·default·signature_algorithm·list·in·OTP-26·and·cryptolib·from |
| 268 | OpenSSL·3.0.2·would·look·like:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">1</span><span·class="o">></span><span·class="w">··</span><span·class="nc">ssl</span><span·class="p">:</span><span·class="nf">signature_algs</span><span·class="p"·data-group-id=" | 268 | OpenSSL·3.0.2·would·look·like:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="mi">1</span><span·class="o">></span><span·class="w">··</span><span·class="nc">ssl</span><span·class="p">:</span><span·class="nf">signature_algs</span><span·class="p"·data-group-id="9016105713-1">(</span><span·class="ss">default</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'tlsv1.3'</span><span·class="p"·data-group-id="9016105713-1">)</span><span·class="p">.</span><span·class="w"> |
| 269 | ·</span><span·class="c1">%%·TLS-1.3·schemes</span><span·class="w"> | 269 | ·</span><span·class="c1">%%·TLS-1.3·schemes</span><span·class="w"> |
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| 27 | dist/lato-latin-400-normal-W7754I4D.woff2 | 27 | dist/lato-latin-400-normal-W7754I4D.woff2 |
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| 33 | dist/search_data- | 33 | dist/search_data-A1A25C0C.js |
| 34 | dist/sidebar_items-3345C785.js | 34 | dist/sidebar_items-3345C785.js |
| 35 | edlin.html | 35 | edlin.html |
| 36 | edlin_expand.html | 36 | edlin_expand.html |
| 37 | epp.html | 37 | epp.html |
| 38 | erl_anno.html | 38 | erl_anno.html |
| 39 | erl_error.html | 39 | erl_error.html |
| 40 | erl_eval.html | 40 | erl_eval.html |
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| 143 | ··</a> | 143 | ··</a> |
| 144 | ··<span·class="text">Quick·start</span> | 144 | ··<span·class="text">Quick·start</span> |
| 145 | </h2> | 145 | </h2> |
| 146 | <p><code·class="inline">argparse</code>·is·designed·to·work·with·<a·href="../../../../erts-15.2.3/doc/html/escript_cmd.html"><code·class="inline">escript</code></a>.·The | 146 | <p><code·class="inline">argparse</code>·is·designed·to·work·with·<a·href="../../../../erts-15.2.3/doc/html/escript_cmd.html"><code·class="inline">escript</code></a>.·The |
| 147 | example·below·is·a·fully·functioning·Erlang·program·accepting·two·command·line | 147 | example·below·is·a·fully·functioning·Erlang·program·accepting·two·command·line |
| 148 | arguments·and·printing·their·product.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ch">#!/usr/bin/env·escript | 148 | arguments·and·printing·their·product.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ch">#!/usr/bin/env·escript |
| 149 | </span><span·class="w"> | 149 | </span><span·class="w"> |
| 150 | </span><span·class="nf">main</span><span·class="p"·data-group-id=" | 150 | </span><span·class="nf">main</span><span·class="p"·data-group-id="0545940006-1">(</span><span·class="n">Args</span><span·class="p"·data-group-id="0545940006-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 151 | ····</span><span·class="nc">argparse</span><span·class="p">:</span><span·class="nf">run</span><span·class="p"·data-group-id=" | 151 | ····</span><span·class="nc">argparse</span><span·class="p">:</span><span·class="nf">run</span><span·class="p"·data-group-id="0545940006-2">(</span><span·class="n">Args</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">cli</span><span·class="p"·data-group-id="0545940006-3">(</span><span·class="p"·data-group-id="0545940006-3">)</span><span·class="p">,</span><s[·...·truncated·by·diffoscope;·len:·305,·SHA:·fc904def924b05c10d53c033490c61c679674fd48a894fd79cb10e08f1dcb3c2·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 152 | </span><span·class="nf">cli</span><span·class="p"·data-group-id=" | 152 | </span><span·class="nf">cli</span><span·class="p"·data-group-id="0545940006-5">(</span><span·class="p"·data-group-id="0545940006-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 153 | ····</span><span·class="p"·data-group-id=" | 153 | ····</span><span·class="p"·data-group-id="0545940006-6">#{</span><span·class="w"> |
| 154 | ········</span><span·class="ss">arguments</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 154 | ········</span><span·class="ss">arguments</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="0545940006-7">[</span><span·class="w"> |
| 155 | ············</span><span·class="p"·data-group-id=" | 155 | ············</span><span·class="p"·data-group-id="0545940006-8">#{</span><span·class="ss">name</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">left</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">type</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·123,·SHA:·0f59fcc6ba031ce8c90200b935554abf743a214f8087471825636b17186460d2·...·]-8">}</span><span·class="p">,</span><span·class="w"> |
| 156 | ············</span><span·class="p"·data-group-id=" | 156 | ············</span><span·class="p"·data-group-id="0545940006-9">#{</span><span·class="ss">name</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">right</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">type</span><span·class="w">·</span>[·...·truncated·by·diffoscope;·len:·124,·SHA:·3e44096860f568788c27ba2ff25cffa35273ce2e543e47deedd4a2c605dc5346·...·]-9">}</span><span·class="w"> |
| 157 | ········</span><span·class="p"·data-group-id=" | 157 | ········</span><span·class="p"·data-group-id="0545940006-7">]</span><span·class="p">,</span><span·class="w"> |
| 158 | ········</span><span·class="ss">handler</span><span·class="w">·</span><span·class="p">=></span><span·class="w"> | 158 | ········</span><span·class="ss">handler</span><span·class="w">·</span><span·class="p">=></span><span·class="w"> |
| 159 | ············</span><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id=" | 159 | ············</span><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="0545940006-10">(</span><span·class="p"·data-group-id="0545940006-11">#{</span><span·class="ss">left</span><span·class="w">·</span><span·class="p">:=</span><span·class="w">·</span><span·class="n">Left</span><span·class="p">,</span><span·class="w">·</span><s[·...·truncated·by·diffoscope;·len:·223,·SHA:·53798f8c05791d921772689f8e983eab61b6f43fa482de88da92b14724fdd62e·...·]-10">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 160 | ················</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 160 | ················</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="0545940006-12">(</span><span·class="s">"</span><span·class="si">~b</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0545940006-13">[</span><span·class="n">Left<[·...·truncated·by·diffoscope;·len:·201,·SHA:·18b108fa7ad5f0cf8c2dbe5b5a91606a07bf4e9814eb4cb6a30ee1f99c022308·...·]-12">)</span><span·class="w"> |
| 161 | ············</span><span·class="k">end</span><span·class="w"> | 161 | ············</span><span·class="k">end</span><span·class="w"> |
| 162 | ····</span><span·class="p"·data-group-id=" | 162 | ····</span><span·class="p"·data-group-id="0545940006-6">}</span><span·class="p">.</span></code></pre><p>Running·this·script·with·no·arguments·results·in·an·error,·accompanied·by·the |
| 163 | usage·information.</p><p>The·<code·class="inline">cli</code>·function·defines·a·single·command·with·embedded·handler·accepting·a | 163 | usage·information.</p><p>The·<code·class="inline">cli</code>·function·defines·a·single·command·with·embedded·handler·accepting·a |
| 164 | map.·Keys·of·the·map·are·argument·names·as·defined·by·the·<code·class="inline">argument</code>·field·of | 164 | map.·Keys·of·the·map·are·argument·names·as·defined·by·the·<code·class="inline">argument</code>·field·of |
| 165 | the·command,·<code·class="inline">left</code>·and·<code·class="inline">right</code>·in·the·example.·Values·are·taken·from·the | 165 | the·command,·<code·class="inline">left</code>·and·<code·class="inline">right</code>·in·the·example.·Values·are·taken·from·the |
| 166 | command·line,·and·converted·into·integers,·as·requested·by·the·type | 166 | command·line,·and·converted·into·integers,·as·requested·by·the·type |
| 167 | specification.·Both·arguments·in·the·example·above·are·required·(and·therefore | 167 | specification.·Both·arguments·in·the·example·above·are·required·(and·therefore |
| 168 | defined·as·positional).</p><h2·id="module-command-hierarchy"·class="section-heading"> | 168 | defined·as·positional).</p><h2·id="module-command-hierarchy"·class="section-heading"> |
| 169 | ··<a·href="#module-command-hierarchy"·class="hover-link"> | 169 | ··<a·href="#module-command-hierarchy"·class="hover-link"> |
| 170 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 170 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 171 | ··</a> | 171 | ··</a> |
| 172 | ··<span·class="text">Command·hierarchy</span> | 172 | ··<span·class="text">Command·hierarchy</span> |
| 173 | </h2> | 173 | </h2> |
| 174 | <p>A·command·may·contain·nested·commands,·forming·a·hierarchy.·Arguments·defined·at | 174 | <p>A·command·may·contain·nested·commands,·forming·a·hierarchy.·Arguments·defined·at |
| 175 | the·upper·level·command·are·automatically·added·to·all·nested·commands.·Nested | 175 | the·upper·level·command·are·automatically·added·to·all·nested·commands.·Nested |
| 176 | commands·example·(assuming·<code·class="inline">progname</code>·is·<code·class="inline">nested</code>):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">cli</span><span·class="p"·data-group-id=" | 176 | commands·example·(assuming·<code·class="inline">progname</code>·is·<code·class="inline">nested</code>):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">cli</span><span·class="p"·data-group-id="9483776941-1">(</span><span·class="p"·data-group-id="9483776941-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 177 | ··</span><span·class="p"·data-group-id=" | 177 | ··</span><span·class="p"·data-group-id="9483776941-2">#{</span><span·class="w"> |
| 178 | ····</span><span·class="c1">%%·top·level·argument·applicable·to·all·commands</span><span·class="w"> | 178 | ····</span><span·class="c1">%%·top·level·argument·applicable·to·all·commands</span><span·class="w"> |
| 179 | ····</span><span·class="ss">arguments</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 179 | ····</span><span·class="ss">arguments</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="9483776941-3">[</span><span·class="p"·data-group-id="9483776941-4">#{</span><span·class="ss">name</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">top</span><span·class="p"·data-group-id="9483776941-4">}</s[·...·truncated·by·diffoscope;·len:·45,·SHA:·56a3acaf13c7af2493f8005650796bf3894f08e11faae8a164757fd101240b84·...·]-3">]</span><span·class="p">,</span><span·class="w"> |
| 180 | ······</span><span·class="ss">commands</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 180 | ······</span><span·class="ss">commands</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="9483776941-5">#{</span><span·class="w"> |
| 181 | ········</span><span·class="s">"first"</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 181 | ········</span><span·class="s">"first"</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="9483776941-6">#{</span><span·class="w"> |
| 182 | ··········</span><span·class="c1">%%·argument·applicable·to·"first"·command·and</span><span·class="w"> | 182 | ··········</span><span·class="c1">%%·argument·applicable·to·"first"·command·and</span><span·class="w"> |
| 183 | ··········</span><span·class="c1">%%··all·commands·nested·into·"first"</span><span·class="w"> | 183 | ··········</span><span·class="c1">%%··all·commands·nested·into·"first"</span><span·class="w"> |
| 184 | ··········</span><span·class="ss">arguments</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 184 | ··········</span><span·class="ss">arguments</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="9483776941-7">[</span><span·class="p"·data-group-id="9483776941-8">#{</span><span·class="ss">name</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">mid</span><span·class="p"·data-group-id="9483776941-8">}</s[·...·truncated·by·diffoscope;·len:·45,·SHA:·56a3acaf13c7af2493f8005650796bf3894f08e11faae8a164757fd101240b84·...·]-7">]</span><span·class="p">,</span><span·class="w"> |
| 185 | ··········</span><span·class="ss">commands</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 185 | ··········</span><span·class="ss">commands</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="9483776941-9">#{</span><span·class="w"> |
| 186 | ············</span><span·class="s">"second"</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 186 | ············</span><span·class="s">"second"</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="9483776941-10">#{</span><span·class="w"> |
| 187 | ··············</span><span·class="c1">%%·argument·only·applicable·for·"second"·command</span><span·class="w"> | 187 | ··············</span><span·class="c1">%%·argument·only·applicable·for·"second"·command</span><span·class="w"> |
| 188 | ··············</span><span·class="ss">arguments</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 188 | ··············</span><span·class="ss">arguments</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="9483776941-11">[</span><span·class="p"·data-group-id="9483776941-12">#{</span><span·class="ss">name</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">bottom</span><span·class="p"·data-group-id="9483776941-12[·...·truncated·by·diffoscope;·len:·51,·SHA:·18f40b62c9b3fb9496dfeb0e6861f628f6e641dbf33fbb80971ae6a4ab3ccc71·...·]-11">]</span><span·class="p">,</span><span·class="w"> |
| 189 | ··············</span><span·class="ss">handler</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id=" | 189 | ··············</span><span·class="ss">handler</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="9483776941-13">(</span><span·class="n">A</span><span·class="p"·data-group-id="9483776941-13">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span[·...·truncated·by·diffoscope;·len:·386,·SHA:·85e3ebf40078fd152cec911ae06bf5b6edb11368705e25b18dbec6fd95d43758·...·]-14">)</span><span·class="w">·</span><span·class="k">end</span><span·class="w"> |
| 190 | ··········</span><span·class="p"·data-group-id=" | 190 | ··········</span><span·class="p"·data-group-id="9483776941-10">}</span><span·class="w"> |
| 191 | ········</span><span·class="p"·data-group-id=" | 191 | ········</span><span·class="p"·data-group-id="9483776941-9">}</span><span·class="w"> |
| 192 | ······</span><span·class="p"·data-group-id=" | 192 | ······</span><span·class="p"·data-group-id="9483776941-6">}</span><span·class="w"> |
| 193 | ····</span><span·class="p"·data-group-id=" | 193 | ····</span><span·class="p"·data-group-id="9483776941-5">}</span><span·class="w"> |
| 194 | ··</span><span·class="p"·data-group-id=" | 194 | ··</span><span·class="p"·data-group-id="9483776941-2">}</span><span·class="p">.</span></code></pre><p>In·the·example·above,·a·3-level·hierarchy·is·defined.·First·is·the·script·itself |
| 195 | (<code·class="inline">nested</code>),·accepting·the·only·argument·<code·class="inline">top</code>.·Since·it·has·no·associated | 195 | (<code·class="inline">nested</code>),·accepting·the·only·argument·<code·class="inline">top</code>.·Since·it·has·no·associated |
| 196 | handler,·<a·href="#run/3"><code·class="inline">run/3</code></a>·will·not·accept·user·input·omitting·nested·command·selection. | 196 | handler,·<a·href="#run/3"><code·class="inline">run/3</code></a>·will·not·accept·user·input·omitting·nested·command·selection. |
| 197 | For·this·example,·user·has·to·supply·5·arguments·in·the·command·line,·two·being | 197 | For·this·example,·user·has·to·supply·5·arguments·in·the·command·line,·two·being |
| 198 | command·names,·and·another·3·-·required·positional·arguments:</p><pre><code·class="text">./nested.erl·one·first·second·two·three | 198 | command·names,·and·another·3·-·required·positional·arguments:</p><pre><code·class="text">./nested.erl·one·first·second·two·three |
| 199 | #{top·=>·"one",mid·=>·"two",bottom·=>·"three"}</code></pre><p>Commands·have·preference·over·positional·argument·values.·In·the·example·above, | 199 | #{top·=>·"one",mid·=>·"two",bottom·=>·"three"}</code></pre><p>Commands·have·preference·over·positional·argument·values.·In·the·example·above, |
| 200 | commands·and·positional·arguments·are·interleaving,·and·<code·class="inline">argparse</code>·matches | 200 | commands·and·positional·arguments·are·interleaving,·and·<code·class="inline">argparse</code>·matches |
| 201 | command·name·first.</p><h2·id="module-arguments"·class="section-heading"> | 201 | command·name·first.</p><h2·id="module-arguments"·class="section-heading"> |
| Offset 206, 22 lines modified | Offset 206, 22 lines modified | ||
| 206 | ··<span·class="text">Arguments</span> | 206 | ··<span·class="text">Arguments</span> |
| 207 | </h2> | 207 | </h2> |
| 208 | <p><code·class="inline">argparse</code>·supports·positional·and·optional·arguments.·Optional·arguments,·or | 208 | <p><code·class="inline">argparse</code>·supports·positional·and·optional·arguments.·Optional·arguments,·or |
| 209 | options·for·short,·must·be·prefixed·with·a·special·character·(<code·class="inline">-</code>·is·the·default | 209 | options·for·short,·must·be·prefixed·with·a·special·character·(<code·class="inline">-</code>·is·the·default |
| 210 | on·all·operating·systems).·Both·options·and·positional·arguments·have·1·or·more | 210 | on·all·operating·systems).·Both·options·and·positional·arguments·have·1·or·more |
| 211 | associated·values.·See·<a·href="#t:argument/0"><code·class="inline">argument·specification</code></a>·to·find·more | 211 | associated·values.·See·<a·href="#t:argument/0"><code·class="inline">argument·specification</code></a>·to·find·more |
| 212 | details·about·supported·combinations.</p><p>In·the·user·input,·short·options·may·be·concatenated·with·their·values.·Long | 212 | details·about·supported·combinations.</p><p>In·the·user·input,·short·options·may·be·concatenated·with·their·values.·Long |
| 213 | options·support·values·separated·by·<code·class="inline">=</code>.·Consider·this·definition:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">cli</span><span·class="p"·data-group-id="1 | 213 | options·support·values·separated·by·<code·class="inline">=</code>.·Consider·this·definition:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">cli</span><span·class="p"·data-group-id="1214553084-1">(</span><span·class="p"·data-group-id="1214553084-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 214 | ··</span><span·class="p"·data-group-id="1 | 214 | ··</span><span·class="p"·data-group-id="1214553084-2">#{</span><span·class="w"> |
| 215 | ····</span><span·class="ss">arguments</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="1 | 215 | ····</span><span·class="ss">arguments</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="1214553084-3">[</span><span·class="w"> |
| 216 | ······</span><span·class="p"·data-group-id="1 | 216 | ······</span><span·class="p"·data-group-id="1214553084-4">#{</span><span·class="ss">name</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">long</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">long</span><span·class="w">·</span><s[·...·truncated·by·diffoscope;·len:·131,·SHA:·ad35e2590b225b56d8941252f2788147fd63b8658a5c95dbdf312ba7f07e8b1e·...·]-4">}</span><span·class="p">,</span><span·class="w"> |
| 217 | ······</span><span·class="p"·data-group-id="1 | 217 | ······</span><span·class="p"·data-group-id="1214553084-5">#{</span><span·class="ss">name</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">short</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">short</span><span·class="w">·</span>[·...·truncated·by·diffoscope;·len:·119,·SHA:·fa38d2c06cb55b696be4d8d1eb9b359c1f8f121f0083e2f1d9db1c65963d2393·...·]-5">}</span><span·class="w"> |
| 218 | ····</span><span·class="p"·data-group-id="1 | 218 | ····</span><span·class="p"·data-group-id="1214553084-3">]</span><span·class="p">,</span><span·class="w"> |
| 219 | ····</span><span·class="ss">handler</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="1 | 219 | ····</span><span·class="ss">handler</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="1214553084-6">(</span><span·class="n">Args</span><span·class="p"·data-group-id="1214553084-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span[·...·truncated·by·diffoscope;·len:·386,·SHA:·39d8f4cca3af3ed356ae852e00dabcb062ca01a821c0da2549ad9ec11492cac4·...·]-7">)</span><span·class="w">·</span><span·class="k">end</span><span·class="w"> |
| 220 | ··</span><span·class="p"·data-group-id="1 | 220 | ··</span><span·class="p"·data-group-id="1214553084-2">}</span><span·class="p">.</span></code></pre><p>Running·<code·class="inline">./args·--long=VALUE</code>·prints·<code·class="inline">#{long·=>·"VALUE"}</code>,·running |
| 221 | <code·class="inline">./args·-sVALUE</code>·prints·<code·class="inline">#{short·=>·"VALUE"}</code></p><p><code·class="inline">argparse</code>·supports·boolean·flags·concatenation:·it·is·possible·to·shorten | 221 | <code·class="inline">./args·-sVALUE</code>·prints·<code·class="inline">#{short·=>·"VALUE"}</code></p><p><code·class="inline">argparse</code>·supports·boolean·flags·concatenation:·it·is·possible·to·shorten |
| 222 | <code·class="inline">-r·-f·-v</code>·to·<code·class="inline">-rfv</code>.</p><p>Shortened·option·names·are·not·supported:·it·is·not·possible·to·use·<code·class="inline">--my-argum</code> | 222 | <code·class="inline">-r·-f·-v</code>·to·<code·class="inline">-rfv</code>.</p><p>Shortened·option·names·are·not·supported:·it·is·not·possible·to·use·<code·class="inline">--my-argum</code> |
| 223 | instead·of·<code·class="inline">--my-argument-name</code>·even·when·such·option·can·be·unambiguously | 223 | instead·of·<code·class="inline">--my-argument-name</code>·even·when·such·option·can·be·unambiguously |
| 224 | found.</p> | 224 | found.</p> |
| 225 | ····</section> | 225 | ····</section> |
| 226 | </div> | 226 | </div> |
| Offset 598, 119 lines modified | Offset 598, 119 lines modified | ||
| 598 | as·optional.·Optional·arguments·do·not·have·specific·order·and·may·appear | 598 | as·optional.·Optional·arguments·do·not·have·specific·order·and·may·appear |
| 599 | anywhere·in·the·command·line.·Positional·arguments·are·ordered·the·same·way·as | 599 | anywhere·in·the·command·line.·Positional·arguments·are·ordered·the·same·way·as |
| 600 | they·appear·in·the·arguments·list·of·the·command·specification.</p><p>By·default,·all·positional·arguments·must·be·present·in·the·command·line.·The | 600 | they·appear·in·the·arguments·list·of·the·command·specification.</p><p>By·default,·all·positional·arguments·must·be·present·in·the·command·line.·The |
| 601 | parser·will·return·an·error·otherwise.·Options,·however,·may·be·omitted,·in | 601 | parser·will·return·an·error·otherwise.·Options,·however,·may·be·omitted,·in |
| 602 | which·case·resulting·argument·map·will·either·contain·the·default·value,·or·not | 602 | which·case·resulting·argument·map·will·either·contain·the·default·value,·or·not |
| 603 | have·the·key·at·all.</p><ul><li><p><strong><code·class="inline">name</code></strong>·-·Sets·the·argument·name·in·the·parsed·argument·map.·If·<code·class="inline">help</code>·is | 603 | have·the·key·at·all.</p><ul><li><p><strong><code·class="inline">name</code></strong>·-·Sets·the·argument·name·in·the·parsed·argument·map.·If·<code·class="inline">help</code>·is |
| 604 | not·defined,·name·is·also·used·to·generate·the·default·usage·message.</p></li><li><p><strong><code·class="inline">short</code></strong>·-·Defines·a·short·(single·character)·form·of·an·optional·argument.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·Define·a·command·accepting·argument·named·myarg,·with·short·form·$a:</span><span·class="gp·unselectable"> | 604 | not·defined,·name·is·also·used·to·generate·the·default·usage·message.</p></li><li><p><strong><code·class="inline">short</code></strong>·-·Defines·a·short·(single·character)·form·of·an·optional·argument.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·Define·a·command·accepting·argument·named·myarg,·with·short·form·$a:</span><span·class="gp·unselectable"> |
| 605 | 1>·</span><span·class="n">Cmd</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 605 | 1>·</span><span·class="n">Cmd</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2011546277-1">#{</span><span·class="ss">arguments</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="2011546277-2">[</span><span·class="p"·data-group-id="2011546277-3">#{</span><span·class="ss">[·...·truncated·by·diffoscope;·len:·442,·SHA:·739b4f347ee8372adc9afc6a2f07674d501966bba3bf5553a6343727027dfbcc·...·]-1">}</span><span·class="p">.</span><span·class="w"> |
| 606 | </span><span·class="c1">%%·Parse·command·line·"-a·str":</span><span·class="gp·unselectable"> | 606 | </span><span·class="c1">%%·Parse·command·line·"-a·str":</span><span·class="gp·unselectable"> |
| 607 | 2>·</span><span·class="p"·data-group-id=" | 607 | 2>·</span><span·class="p"·data-group-id="2011546277-4">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ArgMap</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·class[·...·truncated·by·diffoscope;·len:·620,·SHA:·9b8150d927a4f36000de32b2960285493cf2118341352384d9efe5a3404b8cf4·...·]-5">)</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ArgMap</span><span·class="p">.</span><span·class="w"> |
| 608 | </span><span·class="p"·data-group-id=" | 608 | </span><span·class="p"·data-group-id="2011546277-7">#{</span><span·class="ss">myarg</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"str"</span><span·class="p"·data-group-id="2011546277-7">}</span><span·class="w"> |
| 609 | </span><span·class="c1">%%·Option·value·can·be·concatenated·with·the·switch:·"-astr"</span><span·class="gp·unselectable"> | 609 | </span><span·class="c1">%%·Option·value·can·be·concatenated·with·the·switch:·"-astr"</span><span·class="gp·unselectable"> |
| 610 | 3>·</span><span·class="p"·data-group-id=" | 610 | 3>·</span><span·class="p"·data-group-id="2011546277-8">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ArgMap</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·class[·...·truncated·by·diffoscope;·len:·539,·SHA:·8646b5f1a9ddd5ea75929293720102fb46f9ca0cf8a3b57525647e34cde8fda3·...·]-9">)</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ArgMap</span><span·class="p">.</span><span·class="w"> |
| 611 | </span><span·class="p"·data-group-id=" | 611 | </span><span·class="p"·data-group-id="2011546277-11">#{</span><span·class="ss">myarg</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"str"</span><span·class="p"·data-group-id="2011546277-11">}</span></code></pre><p>By·default·all·options·expect·a·single·value·following·the·option·switch.·The |
| 612 | only·exception·is·an·option·of·a·boolean·type.</p></li><li><p><strong><code·class="inline">long</code></strong>·-·Defines·a·long·form·of·an·optional·argument.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">Cmd</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 612 | only·exception·is·an·option·of·a·boolean·type.</p></li><li><p><strong><code·class="inline">long</code></strong>·-·Defines·a·long·form·of·an·optional·argument.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">Cmd</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="8165954660-1">#{</span><span·class="ss">arguments</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="8165954660-2">[</span><span·class="p"·data-group-id="8165954660-3">#{</span><span·class="ss">[·...·truncated·by·diffoscope;·len:·454,·SHA:·7fab4fe93527e2ea9f20fa13d197515a654b0fd2ba2db5ea32d64520deb70b18·...·]-1">}</span><span·class="p">.</span><span·class="w"> |
| 613 | </span><span·class="c1">%%·Parse·command·line·"-name·Erlang":</span><span·class="gp·unselectable"> | 613 | </span><span·class="c1">%%·Parse·command·line·"-name·Erlang":</span><span·class="gp·unselectable"> |
| 614 | 2>·</span><span·class="p"·data-group-id=" | 614 | 2>·</span><span·class="p"·data-group-id="8165954660-4">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ArgMap</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·class[·...·truncated·by·diffoscope;·len:·626,·SHA:·8ebe0703e8cf5d88d916b1aae5871ff34d7efd4843e02a5c6cd4e112677cbf42·...·]-5">)</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ArgMap</span><span·class="p">.</span><span·class="w"> |
| 615 | </span><span·class="p"·data-group-id=" | 615 | </span><span·class="p"·data-group-id="8165954660-7">#{</span><span·class="ss">myarg</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"Erlang"</span><span·class="p"·data-group-id="8165954660-7">}</span><span·class="w"> |
| 616 | </span><span·class="c1">%%·Or·use·"="·to·separate·the·switch·and·the·value:</span><span·class="gp·unselectable"> | 616 | </span><span·class="c1">%%·Or·use·"="·to·separate·the·switch·and·the·value:</span><span·class="gp·unselectable"> |
| 617 | 3>·</span><span·class="p"·data-group-id=" | 617 | 3>·</span><span·class="p"·data-group-id="8165954660-8">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ArgMap</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·class[·...·truncated·by·diffoscope;·len:·546,·SHA:·f51895e591e12f2390050f5ba58ba2ea7e2e392ada500740e5f4b0aabd0f4ba5·...·]-9">)</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ArgMap</span><span·class="p">.</span><span·class="w"> |
| 618 | </span><span·class="p"·data-group-id=" | 618 | </span><span·class="p"·data-group-id="8165954660-11">#{</span><span·class="ss">myarg</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"Erlang"</span><span·class="p"·data-group-id="8165954660-11">}</span></code></pre><p>If·neither·<code·class="inline">short</code>·not·<code·class="inline">long</code>·is·defined,·the·argument·is·treated·as |
| 619 | positional.</p></li><li><p><strong><code·class="inline">required</code></strong>·-·Forces·the·parser·to·expect·the·argument·to·be·present·in·the | 619 | positional.</p></li><li><p><strong><code·class="inline">required</code></strong>·-·Forces·the·parser·to·expect·the·argument·to·be·present·in·the |
| 620 | command·line.·By·default,·all·positional·argument·are·required,·and·all | 620 | command·line.·By·default,·all·positional·argument·are·required,·and·all |
| 621 | options·are·not.</p></li><li><p><strong><code·class="inline">default</code></strong>·-·Specifies·the·default·value·to·put·in·the·parsed·argument·map | 621 | options·are·not.</p></li><li><p><strong><code·class="inline">default</code></strong>·-·Specifies·the·default·value·to·put·in·the·parsed·argument·map |
| 622 | if·the·value·is·not·supplied·in·the·command·line.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">argparse</span><span·class="p">:</span><span·class="nf">parse</span><span·class="p"·data-group-id=" | 622 | if·the·value·is·not·supplied·in·the·command·line.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">argparse</span><span·class="p">:</span><span·class="nf">parse</span><span·class="p"·data-group-id="8108310003-1">(</span><span·class="p"·data-group-id="8108310003-2">[</span><span·class="p"·data-group-id="8108310003-2">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8108310003-3">#{</span><span·class="ss">arguments[·...·truncated·by·diffoscope;·len:·702,·SHA:·804caac1d22148a18b1b757a29a99753363a8a8d68ca77f7ec69e92db81724de·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 623 | </span><span·class="p"·data-group-id=" | 623 | </span><span·class="p"·data-group-id="8108310003-6">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="8108310003-7">#{</span><span·class="p"·data-group-id="8108310003-7">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="gp·unselectable"> |
| 624 | 2>·</span><span·class="nc">argparse</span><span·class="p">:</span><span·class="nf">parse</span><span·class="p"·data-group-id=" | 624 | 2>·</span><span·class="nc">argparse</span><span·class="p">:</span><span·class="nf">parse</span><span·class="p"·data-group-id="8108310003-8">(</span><span·class="p"·data-group-id="8108310003-9">[</span><span·class="p"·data-group-id="8108310003-9">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8108310003-10">#{</span><span·class="ss">argument[·...·truncated·by·diffoscope;·len:·901,·SHA:·1e602dbf9088773a72d6e1f27fd0c47c6fad0e4e7715344b513c97028e50444d·...·]-8">)</span><span·class="p">.</span><span·class="w"> |
| 625 | </span><span·class="p"·data-group-id=" | 625 | </span><span·class="p"·data-group-id="8108310003-13">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="8108310003-14">#{</span><span·class="ss">myarg</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"d[·...·truncated·by·diffoscope;·len:·56,·SHA:·df90f3de1564c98dc849c92d3d1d704e44b05ab0e4388c048b9a19147eeb72e7·...·]-14">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre></li><li><p><strong><code·class="inline">type</code></strong>·-·Defines·type·conversion·and·validation·routine.·The·default·is |
| 626 | <code·class="inline">string</code>,·assuming·no·conversion.</p></li><li><p><strong><code·class="inline">nargs</code></strong>·-·Defines·the·number·of·following·arguments·to·consume·from·the | 626 | <code·class="inline">string</code>,·assuming·no·conversion.</p></li><li><p><strong><code·class="inline">nargs</code></strong>·-·Defines·the·number·of·following·arguments·to·consume·from·the |
| 627 | command·line.·By·default,·the·parser·consumes·the·next·argument·and·converts | 627 | command·line.·By·default,·the·parser·consumes·the·next·argument·and·converts |
| 628 | it·into·an·Erlang·term·according·to·the·specified·type.</p><ul><li><p><strong><a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:pos_integer/0"><code·class="inline">pos_integer/0</code></a></strong>·-·Consume·exactly·this·number·of·positional·arguments, | 628 | it·into·an·Erlang·term·according·to·the·specified·type.</p><ul><li><p><strong><a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:pos_integer/0"><code·class="inline">pos_integer/0</code></a></strong>·-·Consume·exactly·this·number·of·positional·arguments, |
| 629 | fail·if·there·is·not·enough.·Value·in·the·argument·map·contains·a·list·of | 629 | fail·if·there·is·not·enough.·Value·in·the·argument·map·contains·a·list·of |
| 630 | exactly·this·length.·Example,·defining·a·positional·argument·expecting·3 | 630 | exactly·this·length.·Example,·defining·a·positional·argument·expecting·3 |
| 631 | integer·values:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">Cmd</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 631 | integer·values:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">Cmd</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7131177508-1">#{</span><span·class="ss">arguments</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="7131177508-2">[</span><span·class="p"·data-group-id="7131177508-3">#{</span><span·class="ss">[·...·truncated·by·diffoscope;·len:·623,·SHA:·8081f55c0a6e250588ff557aa886ac6e83d13740ce59a6b62896dc84f70aeabd·...·]-1">}</span><span·class="p">,</span><span·class="w"> |
| 632 | </span><span·class="nc">argparse</span><span·class="p">:</span><span·class="nf">parse</span><span·class="p"·data-group-id=" | 632 | </span><span·class="nc">argparse</span><span·class="p">:</span><span·class="nf">parse</span><span·class="p"·data-group-id="7131177508-4">(</span><span·class="p"·data-group-id="7131177508-5">[</span><span·class="s">"1"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"2"</span><span·class="p">,</span><span·class="w">·</span><span·class="[·...·truncated·by·diffoscope;·len:·191,·SHA:·92eb8d0fabafb95f6e1aabd0e78c7cf65d3415c606e2f29223285b34c223b236·...·]-4">)</span><span·class="p">.</span><span·class="w"> |
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| 132 | is·used·for·entries·that·have·not·been·explicitly·set.</p><p>Arrays·uses·<em>zero</em>-based·indexing.·This·is·a·deliberate·design·choice·and | 132 | is·used·for·entries·that·have·not·been·explicitly·set.</p><p>Arrays·uses·<em>zero</em>-based·indexing.·This·is·a·deliberate·design·choice·and |
| 133 | differs·from·other·Erlang·data·structures,·for·example,·tuples.</p><p>Unless·specified·by·the·user·when·the·array·is·created,·the·default·value·is·the | 133 | differs·from·other·Erlang·data·structures,·for·example,·tuples.</p><p>Unless·specified·by·the·user·when·the·array·is·created,·the·default·value·is·the |
| 134 | atom·<code·class="inline">undefined</code>.·There·is·no·difference·between·an·unset·entry·and·an·entry | 134 | atom·<code·class="inline">undefined</code>.·There·is·no·difference·between·an·unset·entry·and·an·entry |
| 135 | that·has·been·explicitly·set·to·the·same·value·as·the·default·one·(compare | 135 | that·has·been·explicitly·set·to·the·same·value·as·the·default·one·(compare |
| 136 | <a·href="#reset/2"><code·class="inline">reset/2</code></a>).·If·you·need·to·differentiate·between·unset·and·set·entries,·ensure | 136 | <a·href="#reset/2"><code·class="inline">reset/2</code></a>).·If·you·need·to·differentiate·between·unset·and·set·entries,·ensure |
| 137 | that·the·default·value·cannot·be·confused·with·the·values·of·set·entries.</p><p>The·array·never·shrinks·automatically.·If·an·index·<code·class="inline">I</code>·has·been·used·to·set·an | 137 | that·the·default·value·cannot·be·confused·with·the·values·of·set·entries.</p><p>The·array·never·shrinks·automatically.·If·an·index·<code·class="inline">I</code>·has·been·used·to·set·an |
| 138 | entry·successfully,·all·indices·in·the·range·<code·class="inline">[0,I]</code>·stay·accessible·unless·the | 138 | entry·successfully,·all·indices·in·the·range·<code·class="inline">[0,I]</code>·stay·accessible·unless·the |
| 139 | array·size·is·explicitly·changed·by·calling·<a·href="#resize/2"><code·class="inline">resize/2</code></a>.</p><p><em>Examples:</em></p><p>Create·a·fixed-size·array·with·entries·0-9·set·to·<code·class="inline">undefined</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">A0</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">array</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id=" | 139 | array·size·is·explicitly·changed·by·calling·<a·href="#resize/2"><code·class="inline">resize/2</code></a>.</p><p><em>Examples:</em></p><p>Create·a·fixed-size·array·with·entries·0-9·set·to·<code·class="inline">undefined</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">A0</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">array</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id="0545669736-1">(</span><span·class="mi">10</span><span·class="p"·data-group-id="0545669736-1">)</span><span·class="p">.</span><span·class="w"> |
| 140 | </span><span·class="mi">10</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">array</span><span·class="p">:</span><span·class="nf">size</span><span·class="p"·data-group-id=" | 140 | </span><span·class="mi">10</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">array</span><span·class="p">:</span><span·class="nf">size</span><span·class="p"·data-group-id="0545669736-2">(</span><span·class="n">A0</span><span·class="p"·data-group-id="0545669736-2">)</span><span·class="p">.</span></code></pre><p>Create·an·extendible·array·and·set·entry·17·to·<code·class="inline">true</code>,·causing·the·array·to·grow |
| 141 | automatically:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">A1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">array</span><span·class="p">:</span><span·class="nf">set</span><span·class="p"·data-group-id=" | 141 | automatically:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">A1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">array</span><span·class="p">:</span><span·class="nf">set</span><span·class="p"·data-group-id="9985232813-1">(</span><span·class="mi">17</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">true</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">array</span><span·class="p">:</span><span·class="nf">new</span><spa[·...·truncated·by·diffoscope;·len:·143,·SHA:·940a0549a2500eb593013afa14884e982765667099252c0cb841bb46ec47d6e7·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 142 | </span><span·class="mi">18</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">array</span><span·class="p">:</span><span·class="nf">size</span><span·class="p"·data-group-id=" | 142 | </span><span·class="mi">18</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">array</span><span·class="p">:</span><span·class="nf">size</span><span·class="p"·data-group-id="9985232813-3">(</span><span·class="n">A1</span><span·class="p"·data-group-id="9985232813-3">)</span><span·class="p">.</span></code></pre><p>Read·back·a·stored·value:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">true</span><span·class[·...·truncated·by·diffoscope;·len:·862,·SHA:·516f44b00f24a1a6c002b90bd7b10acce178c647f09f483dff1e7a2422c3bb34·...·]-1">)</span></code></pre><p>Accessing·an·entry·beyond·the·last·set·entry·also·returns·the·default·value,·if |
| 143 | the·array·does·not·have·fixed·size:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">undefined</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">array</span><span·class="p">:</span><span·class="nf">get</span><span·class="p"·data-group-id=" | 143 | the·array·does·not·have·fixed·size:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">undefined</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">array</span><span·class="p">:</span><span·class="nf">get</span><span·class="p"·data-group-id="1682170937-1">(</span><span·class="mi">18</span><span·class="p">,</span><span·class="w">·</span><span·class="n">A1</span><span·class="p"·data-group-id="1682170937-1">)</span><span·class="p">.</span></code></pre><p>"Sparse"·functions·ignore·defaul[·...·truncated·by·diffoscope;·len:·515,·SHA:·74cd536f347e4e05b1eb29f2371615af3b6793e17258b0bac28153f073a77ba9·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 144 | </span><span·class="p"·data-group-id=" | 144 | </span><span·class="p"·data-group-id="6836334435-2">[</span><span·class="p"·data-group-id="6836334435-3">{</span><span·class="mi">4</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">false</span><span·class="p"·data-group-id="6836334435-3">}</span><span·class="p">,</span><s[·...·truncated·by·diffoscope;·len:·1017,·SHA:·9784cdbc74a0335dea5a9b7764614a34647ce627a9944b4ebc90ca60aeb049dc·...·]-1">)</span><span·class="p">.</span></code></pre><p>A·fixed-size·array·does·not·grow·automatically·and·does·not·allow·accesses |
| 145 | beyond·the·last·set·entry:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 145 | beyond·the·last·set·entry:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8290186392-1">{</span><span·class="ss">'EXIT'</span><span·class="p">,</span><span·class="p"·data-group-id="8290186392-2">{</span><span·class="ss">badarg</span><span·class="p">,</span><span·class="p">_</span><span·class="p"·data-group-id="8290186392[·...·truncated·by·diffoscope;·len:·644,·SHA:·a38a924223edad7bcdd5bebdc4a1e1775bf3e98b782eb5a17c3631f5144168a2·...·]-3">)</span><span·class="p">.</span><span·class="w"> |
| 146 | </span><span·class="p"·data-group-id=" | 146 | </span><span·class="p"·data-group-id="8290186392-5">{</span><span·class="ss">'EXIT'</span><span·class="p">,</span><span·class="p"·data-group-id="8290186392-6">{</span><span·class="ss">badarg</span><span·class="p">,</span><span·class="p">_</span><span·class="p"·data-group-id="8290186392[·...·truncated·by·diffoscope;·len:·568,·SHA:·d14e93314aa5d6ba95eed8937894594b4f294d6bc265394f86615344f1f5f58c·...·]-7">)</span><span·class="p">.</span></code></pre> |
| 147 | ····</section> | 147 | ····</section> |
| 148 | </div> | 148 | </div> |
| 149 | ··<section·id="summary"·class="details-list"> | 149 | ··<section·id="summary"·class="details-list"> |
| 150 | ····<h1·class="section-heading"> | 150 | ····<h1·class="section-heading"> |
| 151 | ······<a·class="hover-link"·href="#summary"> | 151 | ······<a·class="hover-link"·href="#summary"> |
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| 1138 | ······</div> | 1138 | ······</div> |
| 1139 | <p>Creates·a·new·array·according·to·the·specified·options.·By·default,·the·array·is | 1139 | <p>Creates·a·new·array·according·to·the·specified·options.·By·default,·the·array·is |
| 1140 | extendible·and·has·initial·size·zero.·Array·indices·start·at·<code·class="inline">0</code>.</p><p><code·class="inline">Options</code>·is·a·single·term·or·a·list·of·terms,·selected·from·the·following:</p><ul><li><p><strong><code·class="inline">N::integer()·>=·0</code>·or·<code·class="inline">{size,·N::integer()·>=·0}</code></strong>·-·Specifies·the·initial | 1140 | extendible·and·has·initial·size·zero.·Array·indices·start·at·<code·class="inline">0</code>.</p><p><code·class="inline">Options</code>·is·a·single·term·or·a·list·of·terms,·selected·from·the·following:</p><ul><li><p><strong><code·class="inline">N::integer()·>=·0</code>·or·<code·class="inline">{size,·N::integer()·>=·0}</code></strong>·-·Specifies·the·initial |
| 1141 | array·size;·this·also·implies·<code·class="inline">{fixed,·true}</code>.·If·<code·class="inline">N</code>·is·not·a·non-negative | 1141 | array·size;·this·also·implies·<code·class="inline">{fixed,·true}</code>.·If·<code·class="inline">N</code>·is·not·a·non-negative |
| 1142 | integer,·the·call·fails·with·reason·<code·class="inline">badarg</code>.</p></li><li><p><strong><code·class="inline">fixed</code>·or·<code·class="inline">{fixed,·true}</code></strong>·-·Creates·a·fixed-size·array.·See·also·<a·href="#fix/1"><code·class="inline">fix/1</code></a>.</p></li><li><p><strong><code·class="inline">{fixed,·false}</code></strong>·-·Creates·an·extendible·(non-fixed-size)·array.</p></li><li><p><strong><code·class="inline">{default,·Value}</code></strong>·-·Sets·the·default·value·for·the·array·to·<code·class="inline">Value</code>.</p></li></ul><p>Options·are·processed·in·the·order·they·occur·in·the·list,·that·is,·later | 1142 | integer,·the·call·fails·with·reason·<code·class="inline">badarg</code>.</p></li><li><p><strong><code·class="inline">fixed</code>·or·<code·class="inline">{fixed,·true}</code></strong>·-·Creates·a·fixed-size·array.·See·also·<a·href="#fix/1"><code·class="inline">fix/1</code></a>.</p></li><li><p><strong><code·class="inline">{fixed,·false}</code></strong>·-·Creates·an·extendible·(non-fixed-size)·array.</p></li><li><p><strong><code·class="inline">{default,·Value}</code></strong>·-·Sets·the·default·value·for·the·array·to·<code·class="inline">Value</code>.</p></li></ul><p>Options·are·processed·in·the·order·they·occur·in·the·list,·that·is,·later |
| 1143 | options·have·higher·precedence.</p><p>The·default·value·is·used·as·the·value·of·uninitialized·entries,·and·cannot·be | 1143 | options·have·higher·precedence.</p><p>The·default·value·is·used·as·the·value·of·uninitialized·entries,·and·cannot·be |
| 1144 | changed·once·the·array·has·been·created.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">array</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id=" | 1144 | changed·once·the·array·has·been·created.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">array</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id="8574786798-1">(</span><span·class="mi">100</span><span·class="p"·data-group-id="8574786798-1">)</span></code></pre><p>creates·a·fixed-size·array·of·size·100.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">array</span><span·class="p">:<[·...·truncated·by·diffoscope;·len:·1391,·SHA:·4c91264be4ee673eec8602983f508be6962af6a3f4738d696c6b6d43b83bf961·...·]-1">)</span></code></pre><p>creates·an·extendible·array·with·initial·size·10·whose·default·value·is·<code·class="inline">-1</code>.</p><p>See·also·<a·href="#fix/1"><code·class="inline">fix/1</code></a>,·<a·href="#from_list/2"><code·class="inline">from_list/2</code></a>,·<a·href="#get/2"><code·class="inline">get/2</code></a>,·<a·href="#new/0"><code·class="inline">new/0</code></a>,·<a·href="#new/2"><code·class="inline">new/2</code></a>,·<a·href="#set/3"><code·class="inline">set/3</code></a>.</p> |
| 1145 | ··</section> | 1145 | ··</section> |
| 1146 | </section> | 1146 | </section> |
| 1147 | <section·class="detail"·id="new/2"> | 1147 | <section·class="detail"·id="new/2"> |
| 1148 | ··<div·class="detail-header"> | 1148 | ··<div·class="detail-header"> |
| 1149 | ····<a·href="#new/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1149 | ····<a·href="#new/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1150 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1150 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 1169 | ······</div> | 1169 | ······</div> |
| 1170 | <p>Creates·a·new·array·according·to·the·specified·size·and·options.</p><p>If·<code·class="inline">Size</code>·is·not·a·non-negative·integer,·the·call·fails·with·reason·<code·class="inline">badarg</code>. | 1170 | <p>Creates·a·new·array·according·to·the·specified·size·and·options.</p><p>If·<code·class="inline">Size</code>·is·not·a·non-negative·integer,·the·call·fails·with·reason·<code·class="inline">badarg</code>. |
| 1171 | By·default,·the·array·has·fixed·size.·Notice·that·any·size·specifications·in | 1171 | By·default,·the·array·has·fixed·size.·Notice·that·any·size·specifications·in |
| 1172 | <code·class="inline">Options</code>·override·parameter·<code·class="inline">Size</code>.</p><p>If·<code·class="inline">Options</code>·is·a·list,·this·is·equivalent·to | 1172 | <code·class="inline">Options</code>·override·parameter·<code·class="inline">Size</code>.</p><p>If·<code·class="inline">Options</code>·is·a·list,·this·is·equivalent·to |
| 1173 | <a·href="#new/1"><code·class="inline">new([{size,·Size}·|·Options])</code></a>,·otherwise·it·is·equivalent·to | 1173 | <a·href="#new/1"><code·class="inline">new([{size,·Size}·|·Options])</code></a>,·otherwise·it·is·equivalent·to |
| 1174 | <a·href="#new/1"><code·class="inline">new([{size,·Size}·|·[Options]])</code></a>.·However,·using·this·function | 1174 | <a·href="#new/1"><code·class="inline">new([{size,·Size}·|·[Options]])</code></a>.·However,·using·this·function |
| 1175 | directly·is·more·efficient.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">array</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id=" | 1175 | directly·is·more·efficient.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">array</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id="1752185715-1">(</span><span·class="mi">100</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1752185715-2">{</span><span·class="ss">default</span><span·class="p">,</span><span·class="mi">0</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·68,·SHA:·dd6629006a82872cab8e818d6c695a8f43020bd58a5cd9eac0907808376545bc·...·]-1">)</span></code></pre><p>creates·a·fixed-size·array·of·size·100,·whose·default·value·is·<code·class="inline">0</code>.</p><p>See·also·<a·href="#new/1"><code·class="inline">new/1</code></a>.</p> |
| 1176 | ··</section> | 1176 | ··</section> |
| 1177 | </section> | 1177 | </section> |
| 1178 | <section·class="detail"·id="relax/1"> | 1178 | <section·class="detail"·id="relax/1"> |
| 1179 | ··<div·class="detail-header"> | 1179 | ··<div·class="detail-header"> |
| 1180 | ····<a·href="#relax/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1180 | ····<a·href="#relax/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1181 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1181 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 128 | <p>Assert·macros.</p><h2·id="description"·class="section-heading"> | 128 | <p>Assert·macros.</p><h2·id="description"·class="section-heading"> |
| 129 | ··<a·href="#description"·class="hover-link"> | 129 | ··<a·href="#description"·class="hover-link"> |
| 130 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 130 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 131 | ··</a> | 131 | ··</a> |
| 132 | ··<span·class="text">Description</span> | 132 | ··<span·class="text">Description</span> |
| 133 | </h2> | 133 | </h2> |
| 134 | <p>The·include·file·<code·class="inline">assert.hrl</code>·provides·macros·for·inserting·assertions·in·your | 134 | <p>The·include·file·<code·class="inline">assert.hrl</code>·provides·macros·for·inserting·assertions·in·your |
| 135 | program·code.</p><p>Include·the·following·directive·in·the·module·from·which·the·function·is·called:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id=" | 135 | program·code.</p><p>Include·the·following·directive·in·the·module·from·which·the·function·is·called:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="4693986146-1">(</span><span·class="s">"stdlib/include/assert.hrl"</span><span·class="p"·data-group-id="4693986146-1">)</span><span·class="p">.</span></code></pre><p>When·an·assertion·succeeds,·the·assert·macro·yields·the·atom·<code·class="inline">ok</code>.·When·an |
| 136 | assertion·fails,·an·exception·of·type·<code·class="inline">error</code>·is·generated.·The·associated·error | 136 | assertion·fails,·an·exception·of·type·<code·class="inline">error</code>·is·generated.·The·associated·error |
| 137 | term·has·the·form·<code·class="inline">{Macro,·Info}</code>.·<code·class="inline">Macro</code>·is·the·macro·name,·for·example, | 137 | term·has·the·form·<code·class="inline">{Macro,·Info}</code>.·<code·class="inline">Macro</code>·is·the·macro·name,·for·example, |
| 138 | <code·class="inline">assertEqual</code>.·<code·class="inline">Info</code>·is·a·list·of·tagged·values,·such·as | 138 | <code·class="inline">assertEqual</code>.·<code·class="inline">Info</code>·is·a·list·of·tagged·values,·such·as |
| 139 | <code·class="inline">[{module,·M},·{line,·L},·...]</code>,·which·gives·more·information·about·the·location | 139 | <code·class="inline">[{module,·M},·{line,·L},·...]</code>,·which·gives·more·information·about·the·location |
| 140 | and·cause·of·the·exception.·All·entries·in·the·<code·class="inline">Info</code>·list·are·optional;·do·not | 140 | and·cause·of·the·exception.·All·entries·in·the·<code·class="inline">Info</code>·list·are·optional;·do·not |
| 141 | rely·programmatically·on·any·of·them·being·present.</p><p>Each·assert·macro·has·a·corresponding·version·with·an·extra·argument,·for·adding | 141 | rely·programmatically·on·any·of·them·being·present.</p><p>Each·assert·macro·has·a·corresponding·version·with·an·extra·argument,·for·adding |
| 142 | comments·to·assertions.·These·can·for·example·be·printed·as·part·of·error | 142 | comments·to·assertions.·These·can·for·example·be·printed·as·part·of·error |
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| 156 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 156 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 157 | ··</a> | 157 | ··</a> |
| 158 | ··<span·class="text">Macros</span> | 158 | ··<span·class="text">Macros</span> |
| 159 | </h2> | 159 | </h2> |
| 160 | <ul><li><p><strong><code·class="inline">assert(BoolExpr)</code></strong></p></li><li><p><strong><code·class="inline">assert(BoolExpr,·Comment)</code></strong>·-·Tests·that·<code·class="inline">BoolExpr</code>·completes·normally | 160 | <ul><li><p><strong><code·class="inline">assert(BoolExpr)</code></strong></p></li><li><p><strong><code·class="inline">assert(BoolExpr,·Comment)</code></strong>·-·Tests·that·<code·class="inline">BoolExpr</code>·completes·normally |
| 161 | returning·<code·class="inline">true</code>.</p></li><li><p><strong><code·class="inline">assertNot(BoolExpr)</code></strong></p></li><li><p><strong><code·class="inline">assertNot(BoolExpr,·Comment)</code></strong>·-·Tests·that·<code·class="inline">BoolExpr</code>·completes·normally | 161 | returning·<code·class="inline">true</code>.</p></li><li><p><strong><code·class="inline">assertNot(BoolExpr)</code></strong></p></li><li><p><strong><code·class="inline">assertNot(BoolExpr,·Comment)</code></strong>·-·Tests·that·<code·class="inline">BoolExpr</code>·completes·normally |
| 162 | returning·<code·class="inline">false</code>.</p></li><li><p><strong><code·class="inline">assertMatch(GuardedPattern,·Expr)</code></strong></p></li><li><p><strong><code·class="inline">assertMatch(GuardedPattern,·Expr,·Comment)</code></strong>·-·Tests·that·<code·class="inline">Expr</code>·completes | 162 | returning·<code·class="inline">false</code>.</p></li><li><p><strong><code·class="inline">assertMatch(GuardedPattern,·Expr)</code></strong></p></li><li><p><strong><code·class="inline">assertMatch(GuardedPattern,·Expr,·Comment)</code></strong>·-·Tests·that·<code·class="inline">Expr</code>·completes |
| 163 | normally·yielding·a·value·that·matches·<code·class="inline">GuardedPattern</code>,·for·example:</p><pre><code·class="text">?assertMatch({bork,·_},·f())</code></pre><p>Notice·that·a·guard·<code·class="inline">when·...</code>·can·be·included:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">?</span><span·class="nf">assertMatch</span><span·class="p"·data-group-id="140 | 163 | normally·yielding·a·value·that·matches·<code·class="inline">GuardedPattern</code>,·for·example:</p><pre><code·class="text">?assertMatch({bork,·_},·f())</code></pre><p>Notice·that·a·guard·<code·class="inline">when·...</code>·can·be·included:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">?</span><span·class="nf">assertMatch</span><span·class="p"·data-group-id="4194046046-1">(</span><span·class="p"·data-group-id="4194046046-2">{</span><span·class="ss">bork</span><span·class="p">,</span><span·class="w">·</span><span·class="n">X</span><span·class="p"·data-group-id="4194046046-2">}</span><span·class="w">·</span><spa[·...·truncated·by·diffoscope;·len:·391,·SHA:·ba653e4c934bfdda018e0df5414a46dceba1b6d8b3601b4f64ce2c52b1738c66·...·]-1">)</span></code></pre></li><li><p><strong><code·class="inline">assertNotMatch(GuardedPattern,·Expr)</code></strong></p></li><li><p><strong><code·class="inline">assertNotMatch(GuardedPattern,·Expr,·Comment)</code></strong>·-·Tests·that·<code·class="inline">Expr</code> |
| 164 | completes·normally·yielding·a·value·that·does·not·match·<code·class="inline">GuardedPattern</code>.</p><p>As·in·<code·class="inline">assertMatch</code>,·<code·class="inline">GuardedPattern</code>·can·have·a·<code·class="inline">when</code>·part.</p></li><li><p><strong><code·class="inline">assertEqual(ExpectedValue,·Expr)</code></strong></p></li><li><p><strong><code·class="inline">assertEqual(ExpectedValue,·Expr,·Comment)</code></strong>·-·Tests·that·<code·class="inline">Expr</code>·completes | 164 | completes·normally·yielding·a·value·that·does·not·match·<code·class="inline">GuardedPattern</code>.</p><p>As·in·<code·class="inline">assertMatch</code>,·<code·class="inline">GuardedPattern</code>·can·have·a·<code·class="inline">when</code>·part.</p></li><li><p><strong><code·class="inline">assertEqual(ExpectedValue,·Expr)</code></strong></p></li><li><p><strong><code·class="inline">assertEqual(ExpectedValue,·Expr,·Comment)</code></strong>·-·Tests·that·<code·class="inline">Expr</code>·completes |
| 165 | normally·yielding·a·value·that·is·exactly·equal·to·<code·class="inline">ExpectedValue</code>.</p></li><li><p><strong><code·class="inline">assertNotEqual(ExpectedValue,·Expr)</code></strong></p></li><li><p><strong><code·class="inline">assertNotEqual(ExpectedValue,·Expr,·Comment)</code></strong>·-·Tests·that·<code·class="inline">Expr</code> | 165 | normally·yielding·a·value·that·is·exactly·equal·to·<code·class="inline">ExpectedValue</code>.</p></li><li><p><strong><code·class="inline">assertNotEqual(ExpectedValue,·Expr)</code></strong></p></li><li><p><strong><code·class="inline">assertNotEqual(ExpectedValue,·Expr,·Comment)</code></strong>·-·Tests·that·<code·class="inline">Expr</code> |
| 166 | completes·normally·yielding·a·value·that·is·not·exactly·equal·to | 166 | completes·normally·yielding·a·value·that·is·not·exactly·equal·to |
| 167 | <code·class="inline">ExpectedValue</code>.</p></li><li><p><strong><code·class="inline">assertException(Class,·Term,·Expr)</code></strong></p></li><li><p><strong><code·class="inline">assertException(Class,·Term,·Expr,·Comment)</code></strong>·-·Tests·that·<code·class="inline">Expr</code> | 167 | <code·class="inline">ExpectedValue</code>.</p></li><li><p><strong><code·class="inline">assertException(Class,·Term,·Expr)</code></strong></p></li><li><p><strong><code·class="inline">assertException(Class,·Term,·Expr,·Comment)</code></strong>·-·Tests·that·<code·class="inline">Expr</code> |
| 168 | completes·abnormally·with·an·exception·of·type·<code·class="inline">Class</code>·and·with·the·associated | 168 | completes·abnormally·with·an·exception·of·type·<code·class="inline">Class</code>·and·with·the·associated |
| 169 | <code·class="inline">Term</code>.·The·assertion·fails·if·<code·class="inline">Expr</code>·raises·a·different·exception·or·if·it | 169 | <code·class="inline">Term</code>.·The·assertion·fails·if·<code·class="inline">Expr</code>·raises·a·different·exception·or·if·it |
| 170 | completes·normally·returning·any·value.</p><p>Notice·that·both·<code·class="inline">Class</code>·and·<code·class="inline">Term</code>·can·be·guarded·patterns,·as·in | 170 | completes·normally·returning·any·value.</p><p>Notice·that·both·<code·class="inline">Class</code>·and·<code·class="inline">Term</code>·can·be·guarded·patterns,·as·in |
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| 649 | ····················Data·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>().</pre> | 649 | ····················Data·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>().</pre> |
| 650 | ······</div> | 650 | ······</div> |
| 651 | <p>Decodes·a·base64·string·encoded·using·the·standard·alphabet·according·to | 651 | <p>Decodes·a·base64·string·encoded·using·the·standard·alphabet·according·to |
| 652 | <a·href="https://datatracker.ietf.org/doc/html/rfc4648#section-4">RFC·4648·Section·4</a>·to | 652 | <a·href="https://datatracker.ietf.org/doc/html/rfc4648#section-4">RFC·4648·Section·4</a>·to |
| 653 | plain·ASCII.</p><p>The·function·will·strips·away·any·whitespace·characters·and·check·for·the | 653 | plain·ASCII.</p><p>The·function·will·strips·away·any·whitespace·characters·and·check·for·the |
| 654 | the·correct·number·of·<code·class="inline">=</code>·padding·characters·at·the·end·of·the·encoded·string.</p><p>See·<a·href="#t:decode_options/0"><code·class="inline">decode_options/0</code></a>·for·details·on·which·options·can·be·passed.</p><p><em>Example</em>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">base64</span><span·class="p">:</span><span·class="nf">decode</span><span·class="p"·data-group-id=" | 654 | the·correct·number·of·<code·class="inline">=</code>·padding·characters·at·the·end·of·the·encoded·string.</p><p>See·<a·href="#t:decode_options/0"><code·class="inline">decode_options/0</code></a>·for·details·on·which·options·can·be·passed.</p><p><em>Example</em>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">base64</span><span·class="p">:</span><span·class="nf">decode</span><span·class="p"·data-group-id="4300597047-1">(</span><span·class="s">"AQIDBA=="</span><span·class="p"·data-group-id="4300597047-1">)</span><span·class="p">.</span><span·class="w"> |
| 655 | </span><span·class="p"·data-group-id=" | 655 | </span><span·class="p"·data-group-id="4300597047-2"><<</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">4</span><span·class="p"·data-group-id="4300597047-2">>></span><span·class="gp·unselectable"> |
| 656 | 2>·</span><span·class="nc">base64</span><span·class="p">:</span><span·class="nf">decode</span><span·class="p"·data-group-id=" | 656 | 2>·</span><span·class="nc">base64</span><span·class="p">:</span><span·class="nf">decode</span><span·class="p"·data-group-id="4300597047-3">(</span><span·class="s">"AQ·ID·BA=="</span><span·class="p"·data-group-id="4300597047-3">)</span><span·class="p">.</span><span·class="w"> |
| 657 | </span><span·class="p"·data-group-id=" | 657 | </span><span·class="p"·data-group-id="4300597047-4"><<</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">4</span><span·class="p"·data-group-id="4300597047-4">>></span><span·class="gp·unselectable"> |
| 658 | 3>·</span><span·class="nc">base64</span><span·class="p">:</span><span·class="nf">decode</span><span·class="p"·data-group-id=" | 658 | 3>·</span><span·class="nc">base64</span><span·class="p">:</span><span·class="nf">decode</span><span·class="p"·data-group-id="4300597047-5">(</span><span·class="s">"AQIDBA="</span><span·class="p"·data-group-id="4300597047-5">)</span><span·class="p">.</span><span·class="w"> |
| 659 | </span><span·class="gt">**·exception·error:·missing_padding | 659 | </span><span·class="gt">**·exception·error:·missing_padding |
| 660 | ·····in·function··base64:decode_list/7·(base64.erl,·line·734) | 660 | ·····in·function··base64:decode_list/7·(base64.erl,·line·734) |
| 661 | ········***·data·to·decode·is·missing·final·=·padding·characters,·if·this·is·intended,·use·the·`padding·=>·false`·option</span><span·class="gp·unselectable"> | 661 | ········***·data·to·decode·is·missing·final·=·padding·characters,·if·this·is·intended,·use·the·`padding·=>·false`·option</span><span·class="gp·unselectable"> |
| 662 | 4>·</span><span·class="nc">base64</span><span·class="p">:</span><span·class="nf">decode</span><span·class="p"·data-group-id=" | 662 | 4>·</span><span·class="nc">base64</span><span·class="p">:</span><span·class="nf">decode</span><span·class="p"·data-group-id="4300597047-6">(</span><span·class="s">"AQIDBA="</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4300597047-7">#{</span><span·class="w">·</span><span·class="ss">padding</span><span·class="w">·</span><span·class[·...·truncated·by·diffoscope;·len:·188,·SHA:·1f3c6ccaf0fdca80569ba43e6427a49b4b65feb4504f82cf5c45d007cea6694d·...·]-6">)</span><span·class="p">.</span><span·class="w"> |
| 663 | </span><span·class="p"·data-group-id=" | 663 | </span><span·class="p"·data-group-id="4300597047-8"><<</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">4</span><span·class="p"·data-group-id="4300597047-8">>></span></code></pre> |
| 664 | ··</section> | 664 | ··</section> |
| 665 | </section> | 665 | </section> |
| 666 | <section·class="detail"·id="decode_to_string/1"> | 666 | <section·class="detail"·id="decode_to_string/1"> |
| 667 | ··<div·class="detail-header"> | 667 | ··<div·class="detail-header"> |
| 668 | ····<a·href="#decode_to_string/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 668 | ····<a·href="#decode_to_string/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 669 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 669 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 896 | ·························Data·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>().</pre> | 896 | ·························Data·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>().</pre> |
| 897 | ······</div> | 897 | ······</div> |
| 898 | <p>Decodes·a·base64·"mime"·string·encoded·using·the·standard·alphabet·according·to | 898 | <p>Decodes·a·base64·"mime"·string·encoded·using·the·standard·alphabet·according·to |
| 899 | <a·href="https://datatracker.ietf.org/doc/html/rfc4648#section-4">RFC·4648·Section·4</a>·to | 899 | <a·href="https://datatracker.ietf.org/doc/html/rfc4648#section-4">RFC·4648·Section·4</a>·to |
| 900 | plain·ASCII.</p><p>The·function·will·strips·away·any·illegal·characters.·It·does·<em>not</em>·check·for·the | 900 | plain·ASCII.</p><p>The·function·will·strips·away·any·illegal·characters.·It·does·<em>not</em>·check·for·the |
| 901 | the·correct·number·of·<code·class="inline">=</code>·padding·characters·at·the·end·of·the·encoded·string.</p><p>See·<a·href="#t:decode_options/0"><code·class="inline">decode_options/0</code></a>·for·details·on·which·options·can·be·passed.</p><p><em>Example</em>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">base64</span><span·class="p">:</span><span·class="nf">mime_decode</span><span·class="p"·data-group-id=" | 901 | the·correct·number·of·<code·class="inline">=</code>·padding·characters·at·the·end·of·the·encoded·string.</p><p>See·<a·href="#t:decode_options/0"><code·class="inline">decode_options/0</code></a>·for·details·on·which·options·can·be·passed.</p><p><em>Example</em>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">base64</span><span·class="p">:</span><span·class="nf">mime_decode</span><span·class="p"·data-group-id="0629882137-1">(</span><span·class="s">"AQIDBA=="</span><span·class="p"·data-group-id="0629882137-1">)</span><span·class="p">.</span><span·class="w"> |
| 902 | </span><span·class="p"·data-group-id=" | 902 | </span><span·class="p"·data-group-id="0629882137-2"><<</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">4</span><span·class="p"·data-group-id="0629882137-2">>></span><span·class="gp·unselectable"> |
| 903 | 2>·</span><span·class="nc">base64</span><span·class="p">:</span><span·class="nf">mime_decode</span><span·class="p"·data-group-id=" | 903 | 2>·</span><span·class="nc">base64</span><span·class="p">:</span><span·class="nf">mime_decode</span><span·class="p"·data-group-id="0629882137-3">(</span><span·class="s">"AQIDB=A="</span><span·class="p"·data-group-id="0629882137-3">)</span><span·class="p">.</span><span·class="w"> |
| 904 | </span><span·class="p"·data-group-id=" | 904 | </span><span·class="p"·data-group-id="0629882137-4"><<</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">4</span><span·class="p"·data-group-id="0629882137-4">>></span></code></pre> |
| 905 | ··</section> | 905 | ··</section> |
| 906 | </section> | 906 | </section> |
| 907 | <section·class="detail"·id="mime_decode_to_string/1"> | 907 | <section·class="detail"·id="mime_decode_to_string/1"> |
| 908 | ··<div·class="detail-header"> | 908 | ··<div·class="detail-header"> |
| 909 | ····<a·href="#mime_decode_to_string/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 909 | ····<a·href="#mime_decode_to_string/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 910 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 910 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 147 | <a·href="#strip_files/1"><code·class="inline">strip_files/1</code></a>,·and/or·<a·href="#strip_release/1"><code·class="inline">strip_release/1</code></a>.</p><h2·id="module-reconstruct-source-code"·class="section-heading"> | 147 | <a·href="#strip_files/1"><code·class="inline">strip_files/1</code></a>,·and/or·<a·href="#strip_release/1"><code·class="inline">strip_release/1</code></a>.</p><h2·id="module-reconstruct-source-code"·class="section-heading"> |
| 148 | ··<a·href="#module-reconstruct-source-code"·class="hover-link"> | 148 | ··<a·href="#module-reconstruct-source-code"·class="hover-link"> |
| 149 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 149 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 150 | ··</a> | 150 | ··</a> |
| 151 | ··<span·class="text">Reconstruct·Source·Code</span> | 151 | ··<span·class="text">Reconstruct·Source·Code</span> |
| 152 | </h2> | 152 | </h2> |
| 153 | <p>The·following·example·shows·how·to·reconstruct·Erlang·source·code·from·the·debug | 153 | <p>The·following·example·shows·how·to·reconstruct·Erlang·source·code·from·the·debug |
| 154 | information·in·a·BEAM·file·<code·class="inline">Beam</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 154 | information·in·a·BEAM·file·<code·class="inline">Beam</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="3021724677-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="3021724677-2">{</span><span·class="p">_</span><span·class="p">,</span><span·class="p"·data-group-id="3021724677-3">[</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·921,·SHA:·ab672cae263342c6674d1aec1600ec5f521c86523bc9e613067a68a4d11a289f·...·]-6">)</span><span·class="p">.</span><span·class="w"> |
| 155 | </span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fwrite</span><span·class="p"·data-group-id=" | 155 | </span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fwrite</span><span·class="p"·data-group-id="3021724677-8">(</span><span·class="s">"</span><span·class="si">~s</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3021724677-9">[</span><span·class="nc">erl_pr[·...·truncated·by·diffoscope;·len:·493,·SHA:·914c629029fbcd63dea2261bc5402ac52fde2fdec1ecb9eb664a7f4b71184ad2·...·]-8">)</span><span·class="p">.</span></code></pre><h2·id="module-encrypted-debug-information"·class="section-heading"> |
| 156 | ··<a·href="#module-encrypted-debug-information"·class="hover-link"> | 156 | ··<a·href="#module-encrypted-debug-information"·class="hover-link"> |
| 157 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 157 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 158 | ··</a> | 158 | ··</a> |
| 159 | ··<span·class="text">Encrypted·Debug·Information</span> | 159 | ··<span·class="text">Encrypted·Debug·Information</span> |
| 160 | </h2> | 160 | </h2> |
| 161 | <p>The·debug·information·can·be·encrypted·to·keep·the·source·code·secret,·but·still | 161 | <p>The·debug·information·can·be·encrypted·to·keep·the·source·code·secret,·but·still |
| 162 | be·able·to·use·tools·such·as·Debugger·or·Xref.</p><p>To·use·encrypted·debug·information,·a·key·must·be·provided·to·the·compiler·and | 162 | be·able·to·use·tools·such·as·Debugger·or·Xref.</p><p>To·use·encrypted·debug·information,·a·key·must·be·provided·to·the·compiler·and |
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| 178 | ··</a> | 178 | ··</a> |
| 179 | ··<span·class="text">.erlang.crypt</span> | 179 | ··<span·class="text">.erlang.crypt</span> |
| 180 | </h2> | 180 | </h2> |
| 181 | <p><code·class="inline">beam_lib</code>·searches·for·<code·class="inline">.erlang.crypt</code>·in·the·current·directory,·then·the | 181 | <p><code·class="inline">beam_lib</code>·searches·for·<code·class="inline">.erlang.crypt</code>·in·the·current·directory,·then·the |
| 182 | <a·href="../../../../erts-15.2.3/doc/html/init.html#home">user's·home·directory</a>·and·then | 182 | <a·href="../../../../erts-15.2.3/doc/html/init.html#home">user's·home·directory</a>·and·then |
| 183 | <a·href="filename.html#user_config"><code·class="inline">filename:basedir(user_config,·"erlang")</code></a>.·If·the | 183 | <a·href="filename.html#user_config"><code·class="inline">filename:basedir(user_config,·"erlang")</code></a>.·If·the |
| 184 | file·is·found·and·contains·a·key,·<code·class="inline">beam_lib</code>·implicitly·creates·a·crypto·key·fun | 184 | file·is·found·and·contains·a·key,·<code·class="inline">beam_lib</code>·implicitly·creates·a·crypto·key·fun |
| 185 | and·registers·it.</p><p>File·<code·class="inline">.erlang.crypt</code>·is·to·contain·a·single·list·of·tuples:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 185 | and·registers·it.</p><p>File·<code·class="inline">.erlang.crypt</code>·is·to·contain·a·single·list·of·tuples:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="1071470534-1">{</span><span·class="ss">debug_info</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Mode</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Module</span><span·class="p">,</span><span·class="w">·</span>[·...·truncated·by·diffoscope;·len:·67,·SHA:·fc47190311fe363f11301205b52593483a83a8e570dba57390303e99494ee67b·...·]-1">}</span></code></pre><p><code·class="inline">Mode</code>·is·the·type·of·crypto·algorithm;·currently,·the·only·allowed·value·is |
| 186 | <code·class="inline">des3_cbc</code>.·<code·class="inline">Module</code>·is·either·an·atom,·in·which·case·<code·class="inline">Key</code>·is·only·used·for·the | 186 | <code·class="inline">des3_cbc</code>.·<code·class="inline">Module</code>·is·either·an·atom,·in·which·case·<code·class="inline">Key</code>·is·only·used·for·the |
| 187 | module·<code·class="inline">Module</code>,·or·<code·class="inline">[]</code>,·in·which·case·<code·class="inline">Key</code>·is·used·for·all·modules.·<code·class="inline">Key</code>·is | 187 | module·<code·class="inline">Module</code>,·or·<code·class="inline">[]</code>,·in·which·case·<code·class="inline">Key</code>·is·used·for·all·modules.·<code·class="inline">Key</code>·is |
| 188 | the·non-empty·key·string.</p><p><code·class="inline">Key</code>·in·the·first·tuple·where·both·<code·class="inline">Mode</code>·and·<code·class="inline">Module</code>·match·is·used.</p><p>The·following·is·an·example·of·an·<code·class="inline">.erlang.crypt</code>·file·that·returns·the·same·key | 188 | the·non-empty·key·string.</p><p><code·class="inline">Key</code>·in·the·first·tuple·where·both·<code·class="inline">Mode</code>·and·<code·class="inline">Module</code>·match·is·used.</p><p>The·following·is·an·example·of·an·<code·class="inline">.erlang.crypt</code>·file·that·returns·the·same·key |
| 189 | for·all·modules:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 189 | for·all·modules:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="5065084842-1">[</span><span·class="p"·data-group-id="5065084842-2">{</span><span·class="ss">debug_info</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">des3_cbc</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·303,·SHA:·45414a6e83713b2d809447a60b22f95dda4fbb4737c6d57f265ffc9c8f14d93a·...·]-1">]</span><span·class="p">.</span></code></pre><p>The·following·is·a·slightly·more·complicated·example·of·an·<code·class="inline">.erlang.crypt</code> |
| 190 | providing·one·key·for·module·<code·class="inline">t</code>·and·another·key·for·all·other·modules:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 190 | providing·one·key·for·module·<code·class="inline">t</code>·and·another·key·for·all·other·modules:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="5668991488-1">[</span><span·class="p"·data-group-id="5668991488-2">{</span><span·class="ss">debug_info</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">des3_cbc</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">t<[·...·truncated·by·diffoscope;·len:·136,·SHA:·2d8862426726c142b4383e6884e3edad4a8e86d6f908058dec7b5ab8cb4ef418·...·]-2">}</span><span·class="p">,</span><span·class="w"> |
| 191 | ·</span><span·class="p"·data-group-id=" | 191 | ·</span><span·class="p"·data-group-id="5668991488-3">{</span><span·class="ss">debug_info</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">des3_cbc</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5668991488-4">[</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·250,·SHA:·31d1ac85cfa0b56baaf7e724854c0bc8eeda8baf931f68bd36436fcfbac8f007·...·]-1">]</span><span·class="p">.</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Do·not·use·any·of·the·keys·in·these·examples.·Use·your·own·keys.</p></section> |
| 192 | ····</section> | 192 | ····</section> |
| 193 | </div> | 193 | </div> |
| 194 | ··<section·id="summary"·class="details-list"> | 194 | ··<section·id="summary"·class="details-list"> |
| 195 | ····<h1·class="section-heading"> | 195 | ····<h1·class="section-heading"> |
| 196 | ······<a·class="hover-link"·href="#summary"> | 196 | ······<a·class="hover-link"·href="#summary"> |
| Offset 1494, 19 lines modified | Offset 1494, 19 lines modified | ||
| 1494 | ························when·CryptoKeyFun·::·<a·href="#t:crypto_fun/0">crypto_fun</a>(),·Reason·::·badfun·|·exists·|·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> | 1494 | ························when·CryptoKeyFun·::·<a·href="#t:crypto_fun/0">crypto_fun</a>(),·Reason·::·badfun·|·exists·|·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 1495 | ······</div> | 1495 | ······</div> |
| 1496 | <p>Registers·an·unary·fun·that·is·called·if·<code·class="inline">beam_lib</code>·must·read·an·<code·class="inline">debug_info</code> | 1496 | <p>Registers·an·unary·fun·that·is·called·if·<code·class="inline">beam_lib</code>·must·read·an·<code·class="inline">debug_info</code> |
| 1497 | chunk·that·has·been·encrypted.·The·fun·is·held·in·a·process·that·is·started·by | 1497 | chunk·that·has·been·encrypted.·The·fun·is·held·in·a·process·that·is·started·by |
| 1498 | the·function.</p><p>If·a·fun·is·already·registered·when·attempting·to·register·a·fun, | 1498 | the·function.</p><p>If·a·fun·is·already·registered·when·attempting·to·register·a·fun, |
| 1499 | <code·class="inline">{error,·exists}</code>·is·returned.</p><p>The·fun·must·handle·the·following·arguments:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">CryptoKeyFun</span><span·class="p"·data-group-id=" | 1499 | <code·class="inline">{error,·exists}</code>·is·returned.</p><p>The·fun·must·handle·the·following·arguments:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">CryptoKeyFun</span><span·class="p"·data-group-id="9934340473-1">(</span><span·class="ss">init</span><span·class="p"·data-group-id="9934340473-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">|</span><sp[·...·truncated·by·diffoscope;·len:·509,·SHA:·c7e06c4bda898be707674359047d32477dc2edde7c8875de3ba442ab2a277052·...·]-3">}</span></code></pre><p>Called·when·the·fun·is·registered,·in·the·process·that·holds·the·fun.·Here·the |
| 1500 | crypto·key·fun·can·do·any·necessary·initializations.·If·<code·class="inline">{ok,·NewCryptoKeyFun}</code> | 1500 | crypto·key·fun·can·do·any·necessary·initializations.·If·<code·class="inline">{ok,·NewCryptoKeyFun}</code> |
| 1501 | is·returned,·<code·class="inline">NewCryptoKeyFun</code>·is·registered·instead·of·<code·class="inline">CryptoKeyFun</code>.·If | 1501 | is·returned,·<code·class="inline">NewCryptoKeyFun</code>·is·registered·instead·of·<code·class="inline">CryptoKeyFun</code>.·If |
| 1502 | <code·class="inline">{error,·Term}</code>·is·returned,·the·registration·is·aborted·and | 1502 | <code·class="inline">{error,·Term}</code>·is·returned,·the·registration·is·aborted·and |
| 1503 | <a·href="#crypto_key_fun/1"><code·class="inline">crypto_key_fun/1</code></a>·also·returns·<code·class="inline">{error,·Term}</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">CryptoKeyFun</span><span·class="p"·data-group-id="4 | 1503 | <a·href="#crypto_key_fun/1"><code·class="inline">crypto_key_fun/1</code></a>·also·returns·<code·class="inline">{error,·Term}</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">CryptoKeyFun</span><span·class="p"·data-group-id="4033830425-1">(</span><span·class="p"·data-group-id="4033830425-2">{</span><span·class="ss">debug_info</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Mode</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Module</s[·...·truncated·by·diffoscope;·len:·177,·SHA:·f21012e1830bdc379e3b65373108d928028a74ebe87c8558e566ff8ce6fffdc8·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Key</span></code></pre><p>Called·when·the·key·is·needed·for·module·<code·class="inline">Module</code>·in·the·file·named·<code·class="inline">Filename</code>. |
| 1504 | <code·class="inline">Mode</code>·is·the·type·of·crypto·algorithm;·currently,·the·only·possible·value·is | 1504 | <code·class="inline">Mode</code>·is·the·type·of·crypto·algorithm;·currently,·the·only·possible·value·is |
| 1505 | <code·class="inline">des3_cbc</code>.·The·call·is·to·fail·(raise·an·exception)·if·no·key·is·available.</p><pre><code·class="text">CryptoKeyFun(clear)·->·term()</code></pre><p>Called·before·the·fun·is·unregistered.·Here·any·cleaning·up·can·be·done.·The | 1505 | <code·class="inline">des3_cbc</code>.·The·call·is·to·fail·(raise·an·exception)·if·no·key·is·available.</p><pre><code·class="text">CryptoKeyFun(clear)·->·term()</code></pre><p>Called·before·the·fun·is·unregistered.·Here·any·cleaning·up·can·be·done.·The |
| 1506 | return·value·is·not·important,·but·is·passed·back·to·the·caller·of | 1506 | return·value·is·not·important,·but·is·passed·back·to·the·caller·of |
| 1507 | <a·href="#clear_crypto_key_fun/0"><code·class="inline">clear_crypto_key_fun/0</code></a>·as·part·of·its·return·value.</p> | 1507 | <a·href="#clear_crypto_key_fun/0"><code·class="inline">clear_crypto_key_fun/0</code></a>·as·part·of·its·return·value.</p> |
| 1508 | ··</section> | 1508 | ··</section> |
| 1509 | </section> | 1509 | </section> |
| 1510 | <section·class="detail"·id="diff_dirs/2"> | 1510 | <section·class="detail"·id="diff_dirs/2"> |
| Offset 1843, 22 lines modified | Offset 1843, 22 lines modified | ||
| 1843 | ······</div> | 1843 | ······</div> |
| 1844 | <p>Returns·the·module·version·or·versions.·A·version·is·defined·by·module·attribute | 1844 | <p>Returns·the·module·version·or·versions.·A·version·is·defined·by·module·attribute |
| 1845 | <code·class="inline">-vsn(Vsn)</code>.</p><p>If·this·attribute·is·not·specified,·the·version·defaults·to·the | 1845 | <code·class="inline">-vsn(Vsn)</code>.</p><p>If·this·attribute·is·not·specified,·the·version·defaults·to·the |
| 1846 | checksum·of·the·module.·Notice·that·if·version·<code·class="inline">Vsn</code>·is·not·a·list,·it·is·made | 1846 | checksum·of·the·module.·Notice·that·if·version·<code·class="inline">Vsn</code>·is·not·a·list,·it·is·made |
| 1847 | into·one,·that·is·<code·class="inline">{ok,{Module,[Vsn]}}</code>·is·returned.·If·there·are·many·<code·class="inline">-vsn</code> | 1847 | into·one,·that·is·<code·class="inline">{ok,{Module,[Vsn]}}</code>·is·returned.·If·there·are·many·<code·class="inline">-vsn</code> |
| 1848 | module·attributes,·the·result·is·the·concatenated·list·of·versions.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">beam_lib</span><span·class="p">:</span><span·class="nf">version</span><span·class="p"·data-group-id=" | 1848 | module·attributes,·the·result·is·the·concatenated·list·of·versions.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">beam_lib</span><span·class="p">:</span><span·class="nf">version</span><span·class="p"·data-group-id="2262017486-1">(</span><span·class="ss">a</span><span·class="p"·data-group-id="2262017486-1">)</span><span·class="p">.</span><span·class="w">·</span><span·class="c1">%·-vsn(1).</span><span·class="w"> |
| 1849 | </span><span·class="p"·data-group-id=" | 1849 | </span><span·class="p"·data-group-id="2262017486-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="2262017486-3">{</span><span·class="ss">a</span><span·class="p">,</span><span·class="p"·data-group-id="2262017486-4">[</span><span·class="mi">1</span><spa[·...·truncated·by·diffoscope;·len:·143,·SHA:·b77a8e5878286547cc231335076c6fbeeca50e240c4db026c6fac38085a7f78d·...·]-2">}</span><span·class="gp·unselectable"> |
| 1850 | 2>·</span><span·class="nc">beam_lib</span><span·class="p">:</span><span·class="nf">version</span><span·class="p"·data-group-id=" | 1850 | 2>·</span><span·class="nc">beam_lib</span><span·class="p">:</span><span·class="nf">version</span><span·class="p"·data-group-id="2262017486-5">(</span><span·class="ss">b</span><span·class="p"·data-group-id="2262017486-5">)</span><span·class="p">.</span><span·class="w">·</span><span·class="c1">%·-vsn([1]).</span><span·class="w"> |
| 1851 | </span><span·class="p"·data-group-id=" | 1851 | </span><span·class="p"·data-group-id="2262017486-6">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="2262017486-7">{</span><span·class="ss">b</span><span·class="p">,</span><span·class="p"·data-group-id="2262017486-8">[</span><span·class="mi">1</span><spa[·...·truncated·by·diffoscope;·len:·143,·SHA:·b86dc11e918837e7620c7e91442b819cadef5f34efcd229d61493ff5b2f06a6d·...·]-6">}</span><span·class="gp·unselectable"> |
| 1852 | 3>·</span><span·class="nc">beam_lib</span><span·class="p">:</span><span·class="nf">version</span><span·class="p"·data-group-id=" | 1852 | 3>·</span><span·class="nc">beam_lib</span><span·class="p">:</span><span·class="nf">version</span><span·class="p"·data-group-id="2262017486-9">(</span><span·class="ss">c</span><span·class="p"·data-group-id="2262017486-9">)</span><span·class="p">.</span><span·class="w">·</span><span·class="c1">%·-vsn([1]).·-vsn(2).</span><span·class="w"> |
| 1853 | </span><span·class="p"·data-group-id=" | 1853 | </span><span·class="p"·data-group-id="2262017486-10">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="2262017486-11">{</span><span·class="ss">c</span><span·class="p">,</span><span·class="p"·data-group-id="2262017486-12">[</span><span·class="mi">1</span><[·...·truncated·by·diffoscope;·len:·197,·SHA:·f6bd7ca869135609f10312241b5bb47ae440a866f895232e3c474e0881e22494·...·]-10">}</span><span·class="gp·unselectable"> |
| 1854 | 4>·</span><span·class="nc">beam_lib</span><span·class="p">:</span><span·class="nf">version</span><span·class="p"·data-group-id=" | 1854 | 4>·</span><span·class="nc">beam_lib</span><span·class="p">:</span><span·class="nf">version</span><span·class="p"·data-group-id="2262017486-13">(</span><span·class="ss">d</span><span·class="p"·data-group-id="2262017486-13">)</span><span·class="p">.</span><span·class="w">·</span><span·class="c1">%·no·-vsn·attribute</span><span·class="w"> |
| 1855 | </span><span·class="p"·data-group-id=" | 1855 | </span><span·class="p"·data-group-id="2262017486-14">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="2262017486-15">{</span><span·class="ss">d</span><span·class="p">,</span><span·class="p"·data-group-id="2262017486-16">[</span><span·class="mi">275613208[·...·truncated·by·diffoscope;·len:·186,·SHA:·221ab07df6b418fdc9612fe35516741cf27ecf94f7dfa8a1f127c2bf2a1050b8·...·]-14">}</span></code></pre> |
| 1856 | ··</section> | 1856 | ··</section> |
| 1857 | </section> | 1857 | </section> |
| 1858 | ····</div> | 1858 | ····</div> |
| 1859 | ··</section> | 1859 | ··</section> |
| 1860 | ····<footer·class="footer"> | 1860 | ····<footer·class="footer"> |
| Offset 631, 15 lines modified | Offset 631, 15 lines modified | ||
| 631 | ······<div·class="specs"> | 631 | ······<div·class="specs"> |
| 632 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·bin_to_list(Subject)·->·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:byte/0">byte</a>()]·when·Subject·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>().</pre> | 632 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·bin_to_list(Subject)·->·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:byte/0">byte</a>()]·when·Subject·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>().</pre> |
| 633 | ······</div> | 633 | ······</div> |
| 634 | <p>Converts·<code·class="inline">Subject</code>·to·a·list·of·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:byte/0"><code·class="inline">byte/0</code></a>s,·each·representing·the·value·of·one·byte.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">binary</span><span·class="p">:</span><span·class="nf">bin_to_list</span><span·class="p"·data-group-id=" | 634 | <p>Converts·<code·class="inline">Subject</code>·to·a·list·of·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:byte/0"><code·class="inline">byte/0</code></a>s,·each·representing·the·value·of·one·byte.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">binary</span><span·class="p">:</span><span·class="nf">bin_to_list</span><span·class="p"·data-group-id="1773503517-1">(</span><span·class="p"·data-group-id="1773503517-2"><<</span><span·class="s">"erlang"</span><span·class="p"·data-group-id="1773503517-2">>></span><span·class="p"·data-group-id="1773503517-1">)</span><span·class="p">.</span><span·class="w"> |
| 635 | </span><span·class="s">"erlang"</span><span·class="w"> | 635 | </span><span·class="s">"erlang"</span><span·class="w"> |
| 636 | </span><span·class="c1">%%·or·[101,114,108,97,110,103]·in·list·notation.</span></code></pre> | 636 | </span><span·class="c1">%%·or·[101,114,108,97,110,103]·in·list·notation.</span></code></pre> |
| 637 | ··</section> | 637 | ··</section> |
| 638 | </section> | 638 | </section> |
| 639 | <section·class="detail"·id="bin_to_list/2"> | 639 | <section·class="detail"·id="bin_to_list/2"> |
| 640 | ··<div·class="detail-header"> | 640 | ··<div·class="detail-header"> |
| Offset 693, 15 lines modified | Offset 693, 15 lines modified | ||
| 693 | ·····················when·Subject·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>(),·Pos·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0">non_neg_integer</a>(),·Len·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:integer/0">integer</a>().</pre> | 693 | ·····················when·Subject·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>(),·Pos·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0">non_neg_integer</a>(),·Len·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:integer/0">integer</a>().</pre> |
| 694 | ······</div> | 694 | ······</div> |
| 695 | <p>Converts·<code·class="inline">Subject</code>·to·a·list·of·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:byte/0"><code·class="inline">byte/0</code></a>s,·each·representing·the·value·of·one | 695 | <p>Converts·<code·class="inline">Subject</code>·to·a·list·of·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:byte/0"><code·class="inline">byte/0</code></a>s,·each·representing·the·value·of·one |
| 696 | byte.·<code·class="inline">PosLen</code>·or·alternatively·<code·class="inline">Pos</code>·and·<code·class="inline">Len</code>·denote·which·part·of·the | 696 | byte.·<code·class="inline">PosLen</code>·or·alternatively·<code·class="inline">Pos</code>·and·<code·class="inline">Len</code>·denote·which·part·of·the |
| 697 | <code·class="inline">Subject</code>·binary·to·convert.·By·default,·the·entire·<code·class="inline">Subject</code>·binary·is | 697 | <code·class="inline">Subject</code>·binary·to·convert.·By·default,·the·entire·<code·class="inline">Subject</code>·binary·is |
| 698 | converted.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">binary</span><span·class="p">:</span><span·class="nf">bin_to_list</span><span·class="p"·data-group-id="64 | 698 | converted.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">binary</span><span·class="p">:</span><span·class="nf">bin_to_list</span><span·class="p"·data-group-id="6436915799-1">(</span><span·class="p"·data-group-id="6436915799-2"><<</span><span·class="s">"erlang"</span><span·class="p"·data-group-id="6436915799-2">>></span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-[·...·truncated·by·diffoscope;·len:·194,·SHA:·c8cc33db7be7c2e06b21101a927756196a5bacf4727bbf5893aac1c9f5aa8436·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 699 | </span><span·class="s">"rla"</span><span·class="w"> | 699 | </span><span·class="s">"rla"</span><span·class="w"> |
| 700 | </span><span·class="c1">%%·or·[114,108,97]·in·list·notation.</span></code></pre><p>If·<code·class="inline">PosLen</code>·or·alternatively·<code·class="inline">Pos</code>·and·<code·class="inline">Len</code>·in·any·way·reference·outside·the | 700 | </span><span·class="c1">%%·or·[114,108,97]·in·list·notation.</span></code></pre><p>If·<code·class="inline">PosLen</code>·or·alternatively·<code·class="inline">Pos</code>·and·<code·class="inline">Len</code>·in·any·way·reference·outside·the |
| 701 | binary,·a·<code·class="inline">badarg</code>·exception·is·raised.</p> | 701 | binary,·a·<code·class="inline">badarg</code>·exception·is·raised.</p> |
| 702 | ··</section> | 702 | ··</section> |
| 703 | </section> | 703 | </section> |
| 704 | <section·class="detail"·id="compile_pattern/1"> | 704 | <section·class="detail"·id="compile_pattern/1"> |
| Offset 827, 16 lines modified | Offset 827, 16 lines modified | ||
| 827 | ······<div·class="specs"> | 827 | ······<div·class="specs"> |
| 828 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·decode_hex(Bin)·->·Bin2·when·Bin·::·<<_:_*16>>,·Bin2·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>().</pre> | 828 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·decode_hex(Bin)·->·Bin2·when·Bin·::·<<_:_*16>>,·Bin2·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>().</pre> |
| 829 | ······</div> | 829 | ······</div> |
| 830 | <p>Decodes·a·hex·encoded·binary·into·a·binary.</p><p><em>Example</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">binary</span><span·class="p">:</span><span·class="nf">decode_hex</span><span·class="p"·data-group-id=" | 830 | <p>Decodes·a·hex·encoded·binary·into·a·binary.</p><p><em>Example</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">binary</span><span·class="p">:</span><span·class="nf">decode_hex</span><span·class="p"·data-group-id="3926302639-1">(</span><span·class="p"·data-group-id="3926302639-2"><<</span><span·class="s">"66"</span><span·class="p"·data-group-id="3926302639-2">>></span><span·class="p"·data-group-id="3926302639-1">)</span><span·class="p">.</span><span·class="w"> |
| 831 | </span><span·class="p"·data-group-id=" | 831 | </span><span·class="p"·data-group-id="3926302639-3"><<</span><span·class="s">"f"</span><span·class="p"·data-group-id="3926302639-3">>></span></code></pre> |
| 832 | ··</section> | 832 | ··</section> |
| 833 | </section> | 833 | </section> |
| 834 | <section·class="detail"·id="decode_unsigned/1"> | 834 | <section·class="detail"·id="decode_unsigned/1"> |
| 835 | ··<div·class="detail-header"> | 835 | ··<div·class="detail-header"> |
| 836 | ····<a·href="#decode_unsigned/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 836 | ····<a·href="#decode_unsigned/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 837 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 837 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 889, 19 lines modified | Offset 889, 19 lines modified | ||
| 889 | ·····························Subject·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>(), | 889 | ·····························Subject·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>(), |
| 890 | ·····························Endianness·::·big·|·little, | 890 | ·····························Endianness·::·big·|·little, |
| 891 | ·····························Unsigned·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0">non_neg_integer</a>().</pre> | 891 | ·····························Unsigned·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0">non_neg_integer</a>().</pre> |
| 892 | ······</div> | 892 | ······</div> |
| 893 | <p>Converts·the·binary·digit·representation,·in·big·endian·or·little·endian,·of·a | 893 | <p>Converts·the·binary·digit·representation,·in·big·endian·or·little·endian,·of·a |
| 894 | positive·integer·in·<code·class="inline">Subject</code>·to·an·Erlang·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:integer/0"><code·class="inline">integer/0</code></a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">binary</span><span·class="p">:</span><span·class="nf">decode_unsigned</span><span·class="p"·data-group-id=" | 894 | positive·integer·in·<code·class="inline">Subject</code>·to·an·Erlang·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:integer/0"><code·class="inline">integer/0</code></a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">binary</span><span·class="p">:</span><span·class="nf">decode_unsigned</span><span·class="p"·data-group-id="7749352633-1">(</span><span·class="p"·data-group-id="7749352633-2"><<</span><span·class="mi">169</span><span·class="p">,</span><span·class="mi">138</span><span·class="p">,</span><span·class="mi">199</span><span·class="p"·data-group-id="7749352633-2">[·...·truncated·by·diffoscope;·len:·56,·SHA:·9f303d290bb771651dbb4da18bb783c8d566021311a586bb0bb1428aecc949c5·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 895 | </span><span·class="mi">11111111</span><span·class="gp·unselectable"> | 895 | </span><span·class="mi">11111111</span><span·class="gp·unselectable"> |
| 896 | 2>·</span><span·class="nc">binary</span><span·class="p">:</span><span·class="nf">decode_unsigned</span><span·class="p"·data-group-id=" | 896 | 2>·</span><span·class="nc">binary</span><span·class="p">:</span><span·class="nf">decode_unsigned</span><span·class="p"·data-group-id="7749352633-3">(</span><span·class="p"·data-group-id="7749352633-4"><<</span><span·class="mi">169</span><span·class="p">,</span><span·class="mi">138</span><span·class="p">,</span><span·class="mi">199</span><span·class="p"·data-group-id="7749352633-4">[·...·truncated·by·diffoscope;·len:·131,·SHA:·db99b22fa667bd937703bbfe43ccf00cd379dc0631a5306302d99e91a7903e54·...·]-3">)</span><span·class="p">.</span><span·class="w"> |
| 897 | </span><span·class="mi">11111111</span><span·class="gp·unselectable"> | 897 | </span><span·class="mi">11111111</span><span·class="gp·unselectable"> |
| 898 | 3>·</span><span·class="nc">binary</span><span·class="p">:</span><span·class="nf">decode_unsigned</span><span·class="p"·data-group-id=" | 898 | 3>·</span><span·class="nc">binary</span><span·class="p">:</span><span·class="nf">decode_unsigned</span><span·class="p"·data-group-id="7749352633-5">(</span><span·class="p"·data-group-id="7749352633-6"><<</span><span·class="mi">169</span><span·class="p">,</span><span·class="mi">138</span><span·class="p">,</span><span·class="mi">199</span><span·class="p"·data-group-id="7749352633-6">[·...·truncated·by·diffoscope;·len:·134,·SHA:·8da22443fb127ec1709ac6e9ced7f18bb89c1aa8bfc4fdc638c8f347c19801fd·...·]-5">)</span><span·class="p">.</span><span·class="w"> |
| 899 | </span><span·class="mi">13077161</span></code></pre> | 899 | </span><span·class="mi">13077161</span></code></pre> |
| 900 | ··</section> | 900 | ··</section> |
| 901 | </section> | 901 | </section> |
| 902 | <section·class="detail"·id="encode_hex/1"> | 902 | <section·class="detail"·id="encode_hex/1"> |
| 903 | ··<div·class="detail-header"> | 903 | ··<div·class="detail-header"> |
| 904 | ····<a·href="#encode_hex/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 904 | ····<a·href="#encode_hex/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 952, 22 lines modified | Offset 952, 22 lines modified | ||
| 952 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·encode_hex(Bin,·Case)·->·Bin2 | 952 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·encode_hex(Bin,·Case)·->·Bin2 |
| 953 | ····················when·Bin·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>(),·Case·::·lowercase·|·uppercase,·Bin2·::·<<_:_*16>>.</pre> | 953 | ····················when·Bin·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>(),·Case·::·lowercase·|·uppercase,·Bin2·::·<<_:_*16>>.</pre> |
| 954 | ······</div> | 954 | ······</div> |
| 955 | <p>Encodes·a·binary·into·a·hex·encoded·binary·using·the·specified·case·for·the | 955 | <p>Encodes·a·binary·into·a·hex·encoded·binary·using·the·specified·case·for·the |
| 956 | hexadecimal·digits·"a"·to·"f".</p><p>The·default·case·is·<code·class="inline">uppercase</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">binary</span><span·class="p">:</span><span·class="nf">encode_hex</span><span·class="p"·data-group-id=" | 956 | hexadecimal·digits·"a"·to·"f".</p><p>The·default·case·is·<code·class="inline">uppercase</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">binary</span><span·class="p">:</span><span·class="nf">encode_hex</span><span·class="p"·data-group-id="3035951839-1">(</span><span·class="p"·data-group-id="3035951839-2"><<</span><span·class="s">"f"</span><span·class="p"·data-group-id="3035951839-2">>></span><span·class="p"·data-group-id="3035951839-1">)</span><span·class="p">.</span><span·class="w"> |
| 957 | </span><span·class="p"·data-group-id=" | 957 | </span><span·class="p"·data-group-id="3035951839-3"><<</span><span·class="s">"66"</span><span·class="p"·data-group-id="3035951839-3">>></span><span·class="gp·unselectable"> |
| 958 | 2>·</span><span·class="nc">binary</span><span·class="p">:</span><span·class="nf">encode_hex</span><span·class="p"·data-group-id=" | 958 | 2>·</span><span·class="nc">binary</span><span·class="p">:</span><span·class="nf">encode_hex</span><span·class="p"·data-group-id="3035951839-4">(</span><span·class="p"·data-group-id="3035951839-5"><<</span><span·class="s">"/"</span><span·class="p"·data-group-id="3035951839-5">>></span><span·class="p"·data-group-id="3035951839-4">)</span><span·class="p">.</span><span·class="w"> |
| 959 | </span><span·class="p"·data-group-id=" | 959 | </span><span·class="p"·data-group-id="3035951839-6"><<</span><span·class="s">"2F"</span><span·class="p"·data-group-id="3035951839-6">>></span><span·class="gp·unselectable"> |
| 960 | 3>·</span><span·class="nc">binary</span><span·class="p">:</span><span·class="nf">encode_hex</span><span·class="p"·data-group-id=" | 960 | 3>·</span><span·class="nc">binary</span><span·class="p">:</span><span·class="nf">encode_hex</span><span·class="p"·data-group-id="3035951839-7">(</span><span·class="p"·data-group-id="3035951839-8"><<</span><span·class="s">"/"</span><span·class="p"·data-group-id="3035951839-8">>></span><span·class="p">,</span><span·class="w">·</span><span·class="ss">lowercase</sp[·...·truncated·by·diffoscope;·len:·44,·SHA:·478e0ac6028553f6a1ce79859e754c98ef77b481172ddab9e54a7d9c93f1b74e·...·]-7">)</span><span·class="p">.</span><span·class="w"> |
| 961 | </span><span·class="p"·data-group-id=" | 961 | </span><span·class="p"·data-group-id="3035951839-9"><<</span><span·class="s">"2f"</span><span·class="p"·data-group-id="3035951839-9">>></span><span·class="gp·unselectable"> |
| 962 | 4>·</span><span·class="nc">binary</span><span·class="p">:</span><span·class="nf">encode_hex</span><span·class="p"·data-group-id=" | 962 | 4>·</span><span·class="nc">binary</span><span·class="p">:</span><span·class="nf">encode_hex</span><span·class="p"·data-group-id="3035951839-10">(</span><span·class="p"·data-group-id="3035951839-11"><<</span><span·class="s">"/"</span><span·class="p"·data-group-id="3035951839-11">>></span><span·class="p">,</span><span·class="w">·</span><span·class="ss">uppercase<[·...·truncated·by·diffoscope;·len:·47,·SHA:·03041eb46918522e544380cad480870b196e9ef4998cce2dda6ee8e661d5bce4·...·]-10">)</span><span·class="p">.</span><span·class="w"> |
| 963 | </span><span·class="p"·data-group-id=" | 963 | </span><span·class="p"·data-group-id="3035951839-12"><<</span><span·class="s">"2F"</span><span·class="p"·data-group-id="3035951839-12">>></span></code></pre> |
| 964 | ··</section> | 964 | ··</section> |
| 965 | </section> | 965 | </section> |
| 966 | <section·class="detail"·id="encode_unsigned/1"> | 966 | <section·class="detail"·id="encode_unsigned/1"> |
| 967 | ··<div·class="detail-header"> | 967 | ··<div·class="detail-header"> |
| 968 | ····<a·href="#encode_unsigned/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 968 | ····<a·href="#encode_unsigned/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 969 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 969 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 1017, 20 lines modified | Offset 1017, 20 lines modified | ||
| 1017 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·encode_unsigned(Unsigned,·Endianness)·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>() | 1017 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·encode_unsigned(Unsigned,·Endianness)·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>() |
| 1018 | ·························when·Unsigned·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0">non_neg_integer</a>(),·Endianness·::·big·|·little.</pre> | 1018 | ·························when·Unsigned·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0">non_neg_integer</a>(),·Endianness·::·big·|·little.</pre> |
| 1019 | ······</div> | 1019 | ······</div> |
| 1020 | <p>Converts·a·positive·integer·to·the·smallest·possible·representation·in·a·binary | 1020 | <p>Converts·a·positive·integer·to·the·smallest·possible·representation·in·a·binary |
| 1021 | digit·representation,·either·big·endian·or·little·endian.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">binary</span><span·class="p">:</span><span·class="nf">encode_unsigned</span><span·class="p"·data-group-id=" | 1021 | digit·representation,·either·big·endian·or·little·endian.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">binary</span><span·class="p">:</span><span·class="nf">encode_unsigned</span><span·class="p"·data-group-id="8822058540-1">(</span><span·class="mi">11111111</span><span·class="p"·data-group-id="8822058540-1">)</span><span·class="p">.</span><span·class="w"> |
| 1022 | </span><span·class="p"·data-group-id=" | 1022 | </span><span·class="p"·data-group-id="8822058540-2"><<</span><span·class="mi">169</span><span·class="p">,</span><span·class="mi">138</span><span·class="p">,</span><span·class="mi">199</span><span·class="p"·data-group-id="8822058540-2">>></span><span·class="gp·unselectable"> |
| 1023 | 2>·</span><span·class="nc">binary</span><span·class="p">:</span><span·class="nf">encode_unsigned</span><span·class="p"·data-group-id=" | 1023 | 2>·</span><span·class="nc">binary</span><span·class="p">:</span><span·class="nf">encode_unsigned</span><span·class="p"·data-group-id="8822058540-3">(</span><span·class="mi">11111111</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">big</span><span·class="p"·data-group-id="8822058540-3">)</span><span·class="p">.</span><span·class="w"> |
| 1024 | </span><span·class="p"·data-group-id=" | 1024 | </span><span·class="p"·data-group-id="8822058540-4"><<</span><span·class="mi">169</span><span·class="p">,</span><span·class="mi">138</span><span·class="p">,</span><span·class="mi">199</span><span·class="p"·data-group-id="8822058540-4">>></span><span·class="gp·unselectable"> |
| 1025 | 2>·</span><span·class="nc">binary</span><span·class="p">:</span><span·class="nf">encode_unsigned</span><span·class="p"·data-group-id=" | 1025 | 2>·</span><span·class="nc">binary</span><span·class="p">:</span><span·class="nf">encode_unsigned</span><span·class="p"·data-group-id="8822058540-5">(</span><span·class="mi">11111111</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">little</span><span·class="p"·data-group-id="8822058540-5">)</span><span·class="p">.</span><span·class="w"> |
| 1026 | </span><span·class="p"·data-group-id=" | 1026 | </span><span·class="p"·data-group-id="8822058540-6"><<</span><span·class="mi">199</span><span·class="p">,</span><span·class="mi">138</span><span·class="p">,</span><span·class="mi">169</span><span·class="p"·data-group-id="8822058540-6">>></span></code></pre> |
| 1027 | ··</section> | 1027 | ··</section> |
| 1028 | </section> | 1028 | </section> |
| 1029 | <section·class="detail"·id="first/1"> | 1029 | <section·class="detail"·id="first/1"> |
| 1030 | ··<div·class="detail-header"> | 1030 | ··<div·class="detail-header"> |
| 1031 | ····<a·href="#first/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1031 | ····<a·href="#first/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1032 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1032 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 1137, 17 lines modified | Offset 1137, 17 lines modified | ||
| 1137 | ······<div·class="specs"> | 1137 | ······<div·class="specs"> |
| 1138 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·longest_common_prefix(Binaries)·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0">non_neg_integer</a>()·when·Binaries·::·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>(),·...].</pre> | 1138 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·longest_common_prefix(Binaries)·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0">non_neg_integer</a>()·when·Binaries·::·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>(),·...].</pre> |
| 1139 | ······</div> | 1139 | ······</div> |
| 1140 | <p>Returns·the·length·of·the·longest·common·prefix·of·the·binaries·in·list | 1140 | <p>Returns·the·length·of·the·longest·common·prefix·of·the·binaries·in·list |
| 1141 | <code·class="inline">Binaries</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">binary</span><span·class="p">:</span><span·class="nf">longest_common_prefix</span><span·class="p"·data-group-id=" | 1141 | <code·class="inline">Binaries</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">binary</span><span·class="p">:</span><span·class="nf">longest_common_prefix</span><span·class="p"·data-group-id="1267856890-1">(</span><span·class="p"·data-group-id="1267856890-2">[</span><span·class="p"·data-group-id="1267856890-3"><<</span><span·class="s">"erlang"</span><span·class="p"·data-group-id="1267856890-3">>></span><span·class="p">,</s[·...·truncated·by·diffoscope;·len:·284,·SHA:·01cd4b677b960ae936aa964ff28d9f92357140fb03ef450e5ffd773415f85b0e·...·]0-1">)</span><span·class="p">.</span><span·class="w"> |
| 1142 | </span><span·class="mi">2</span><span·class="gp·unselectable"> | 1142 | </span><span·class="mi">2</span><span·class="gp·unselectable"> |
| 1143 | 2>·</span><span·class="nc">binary</span><span·class="p">:</span><span·class="nf">longest_common_prefix</span><span·class="p"·data-group-id=" | 1143 | 2>·</span><span·class="nc">binary</span><span·class="p">:</span><span·class="nf">longest_common_prefix</span><span·class="p"·data-group-id="1267856890-5">(</span><span·class="p"·data-group-id="1267856890-6">[</span><span·class="p"·data-group-id="1267856890-7"><<</span><span·class="s">"erlang"</span><span·class="p"·data-group-id="1267856890-7">>></span><span·class="p">,</s[·...·truncated·by·diffoscope;·len:·280,·SHA:·203ad4139043c6485ea9844ae5eceacc4cdfb78f882a8eb0f327650adb8d52f4·...·]0-5">)</span><span·class="p">.</span><span·class="w"> |
| 1144 | </span><span·class="mi">0</span></code></pre><p>If·<code·class="inline">Binaries</code>·is·not·a·flat·non-empty·list·of·binaries,·a·<code·class="inline">badarg</code>·exception·is | 1144 | </span><span·class="mi">0</span></code></pre><p>If·<code·class="inline">Binaries</code>·is·not·a·flat·non-empty·list·of·binaries,·a·<code·class="inline">badarg</code>·exception·is |
| 1145 | raised.</p> | 1145 | raised.</p> |
| 1146 | ··</section> | 1146 | ··</section> |
| 1147 | </section> | 1147 | </section> |
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| Offset 1682, 15 lines modified | Offset 1682, 15 lines modified | ||
| 1682 | ················Options·::·[Option]·|·Option, | 1682 | ················Options·::·[Option]·|·Option, |
| 1683 | ················Option·::·<a·href="../../../../lib/compiler-8.6/doc/html/compile.html#t:option/0">compile:option</a>(), | 1683 | ················Option·::·<a·href="../../../../lib/compiler-8.6/doc/html/compile.html#t:option/0">compile:option</a>(), |
| 1684 | ················Module·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:module/0">module</a>().</pre> | 1684 | ················Module·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:module/0">module</a>().</pre> |
| 1685 | ······</div> | 1685 | ······</div> |
| 1686 | <p>Compiles·and·then·loads·the·code·for·a·file·on·all·nodes.·<code·class="inline">Options</code>·defaults·to | 1686 | <p>Compiles·and·then·loads·the·code·for·a·file·on·all·nodes.·<code·class="inline">Options</code>·defaults·to |
| 1687 | <code·class="inline">[]</code>.·Compilation·is·equivalent·to:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">compile</span><span·class="p">:</span><span·class="nf">file</span><span·class="p"·data-group-id=" | 1687 | <code·class="inline">[]</code>.·Compilation·is·equivalent·to:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">compile</span><span·class="p">:</span><span·class="nf">file</span><span·class="p"·data-group-id="2201622716-1">(</span><span·class="n">File</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Options</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="p"·data-group-id="2201622716-2">[</span><sp[·...·truncated·by·diffoscope;·len:·215,·SHA:·94513d8d57cb690bbe2bf7ca082ce75aca2d92d5c5fe02408e241214d6e38e1c·...·]-1">)</span></code></pre> |
| 1688 | ··</section> | 1688 | ··</section> |
| 1689 | </section> | 1689 | </section> |
| 1690 | <section·class="detail"·id="ni/0"> | 1690 | <section·class="detail"·id="ni/0"> |
| 1691 | ··<div·class="detail-header"> | 1691 | ··<div·class="detail-header"> |
| 1692 | ····<a·href="#ni/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1692 | ····<a·href="#ni/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1693 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1693 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 1765, 18 lines modified | Offset 1765, 18 lines modified | ||
| 1765 | ····································Option·::·{unit,·<a·href="#t:rfc3339_time_unit/0">rfc3339_time_unit</a>()}.</pre> | 1765 | ····································Option·::·{unit,·<a·href="#t:rfc3339_time_unit/0">rfc3339_time_unit</a>()}.</pre> |
| 1766 | ······</div> | 1766 | ······</div> |
| 1767 | <p>Converts·an·RFC·3339·timestamp·into·system·time.·The·data·format·of·RFC·3339 | 1767 | <p>Converts·an·RFC·3339·timestamp·into·system·time.·The·data·format·of·RFC·3339 |
| 1768 | timestamps·is·described·by·<a·href="https://www.ietf.org/rfc/rfc3339.txt">RFC·3339</a>. | 1768 | timestamps·is·described·by·<a·href="https://www.ietf.org/rfc/rfc3339.txt">RFC·3339</a>. |
| 1769 | Starting·from·OTP·25.1,·the·minutes·part·of·the·time·zone·is·optional.</p><p>Valid·option:</p><ul><li><strong><code·class="inline">{unit,·Unit}</code></strong>·-·The·time·unit·of·the·return·value.·The·default·is | 1769 | Starting·from·OTP·25.1,·the·minutes·part·of·the·time·zone·is·optional.</p><p>Valid·option:</p><ul><li><strong><code·class="inline">{unit,·Unit}</code></strong>·-·The·time·unit·of·the·return·value.·The·default·is |
| 1770 | <code·class="inline">second</code>.</li></ul><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">calendar</span><span·class="p">:</span><span·class="nf">rfc3339_to_system_time</span><span·class="p"·data-group-id="3 | 1770 | <code·class="inline">second</code>.</li></ul><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">calendar</span><span·class="p">:</span><span·class="nf">rfc3339_to_system_time</span><span·class="p"·data-group-id="3149245847-1">(</span><span·class="s">"2018-02-01T16:17:58+01:00"</span><span·class="p"·data-group-id="3149245847-1">)</span><span·class="p">.</span><span·class="w"> |
| 1771 | </span><span·class="mi">1517498278</span><span·class="gp·unselectable"> | 1771 | </span><span·class="mi">1517498278</span><span·class="gp·unselectable"> |
| 1772 | 2>·</span><span·class="nc">calendar</span><span·class="p">:</span><span·class="nf">rfc3339_to_system_time</span><span·class="p"·data-group-id="3 | 1772 | 2>·</span><span·class="nc">calendar</span><span·class="p">:</span><span·class="nf">rfc3339_to_system_time</span><span·class="p"·data-group-id="3149245847-2">(</span><span·class="s">"2018-02-01·15:18:02.088Z"</span><span·class="p">,</span><span·class="w"> |
| 1773 | ···</span><span·class="p"·data-group-id="3 | 1773 | ···</span><span·class="p"·data-group-id="3149245847-3">[</span><span·class="p"·data-group-id="3149245847-4">{</span><span·class="ss">unit</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">nanosecond</span><span·class="p"·data-group-id="3149245847-4">}</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·75,·SHA:·228ae8e68e2e76850c0601772e4916b491999cbcd9ed8ace85112de533487b85·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 1774 | </span><span·class="mi">1517498282088000000</span></code></pre> | 1774 | </span><span·class="mi">1517498282088000000</span></code></pre> |
| 1775 | ··</section> | 1775 | ··</section> |
| 1776 | </section> | 1776 | </section> |
| 1777 | <section·class="detail"·id="seconds_to_daystime/1"> | 1777 | <section·class="detail"·id="seconds_to_daystime/1"> |
| 1778 | ··<div·class="detail-header"> | 1778 | ··<div·class="detail-header"> |
| 1779 | ····<a·href="#seconds_to_daystime/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1779 | ····<a·href="#seconds_to_daystime/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 1928, 24 lines modified | Offset 1928, 24 lines modified | ||
| 1928 | interpreted·as·local·time.·A·non-empty·string·is·included·as·is.·The·time·unit | 1928 | interpreted·as·local·time.·A·non-empty·string·is·included·as·is.·The·time·unit |
| 1929 | of·the·integer·is·the·same·as·the·one·of·<code·class="inline">Time</code>.</p></li><li><p><strong><code·class="inline">{time_designator,·Character}</code></strong>·-·The·character·used·as·time·designator, | 1929 | of·the·integer·is·the·same·as·the·one·of·<code·class="inline">Time</code>.</p></li><li><p><strong><code·class="inline">{time_designator,·Character}</code></strong>·-·The·character·used·as·time·designator, |
| 1930 | that·is,·the·date·and·time·separator.·The·default·is·<code·class="inline">$T</code>.</p></li><li><p><strong><code·class="inline">{unit,·Unit}</code></strong>·-·The·time·unit·of·<code·class="inline">Time</code>.·The·default·is·<code·class="inline">second</code>.·If·some | 1930 | that·is,·the·date·and·time·separator.·The·default·is·<code·class="inline">$T</code>.</p></li><li><p><strong><code·class="inline">{unit,·Unit}</code></strong>·-·The·time·unit·of·<code·class="inline">Time</code>.·The·default·is·<code·class="inline">second</code>.·If·some |
| 1931 | other·unit·is·given·(<code·class="inline">millisecond</code>,·<code·class="inline">microsecond</code>,·<code·class="inline">nanosecond</code>,·or·<code·class="inline">native</code>), | 1931 | other·unit·is·given·(<code·class="inline">millisecond</code>,·<code·class="inline">microsecond</code>,·<code·class="inline">nanosecond</code>,·or·<code·class="inline">native</code>), |
| 1932 | the·formatted·string·includes·a·fraction·of·a·second.·The·number·of·fractional | 1932 | the·formatted·string·includes·a·fraction·of·a·second.·The·number·of·fractional |
| 1933 | second·digits·is·three,·six,·or·nine·depending·on·what·time·unit·is·chosen. | 1933 | second·digits·is·three,·six,·or·nine·depending·on·what·time·unit·is·chosen. |
| 1934 | For·<code·class="inline">native</code>·three·fractional·digits·are·included.·Notice·that·trailing·zeros | 1934 | For·<code·class="inline">native</code>·three·fractional·digits·are·included.·Notice·that·trailing·zeros |
| 1935 | are·not·removed·from·the·fraction.</p></li></ul><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">calendar</span><span·class="p">:</span><span·class="nf">system_time_to_rfc3339</span><span·class="p"·data-group-id=" | 1935 | are·not·removed·from·the·fraction.</p></li></ul><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">calendar</span><span·class="p">:</span><span·class="nf">system_time_to_rfc3339</span><span·class="p"·data-group-id="5036158311-1">(</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">system_time</span><span·class="p"·data-group-id="5036158311-2">(</span><span·class="ss">second</span><span·class="p"·data-group-id="5036158311-2">)</span><span·cla[·...·truncated·by·diffoscope;·len:·32,·SHA:·220eaabc2c7e0144d5a2a4f005a7ca9aae07b28483b8e7eae086e84187b0fc51·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 1936 | </span><span·class="s">"2018-04-23T14:56:28+02:00"</span><span·class="gp·unselectable"> | 1936 | </span><span·class="s">"2018-04-23T14:56:28+02:00"</span><span·class="gp·unselectable"> |
| 1937 | 2>·</span><span·class="nc">calendar</span><span·class="p">:</span><span·class="nf">system_time_to_rfc3339</span><span·class="p"·data-group-id=" | 1937 | 2>·</span><span·class="nc">calendar</span><span·class="p">:</span><span·class="nf">system_time_to_rfc3339</span><span·class="p"·data-group-id="5036158311-3">(</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">system_time</span><span·class="p"·data-group-id="5036158311-4">(</span><span·class="ss">second</span><span·class="p"·data-group-id="5036158311-4">)</span><span·class="p">,</span><span·class="w"> |
| 1938 | ···</span><span·class="p"·data-group-id=" | 1938 | ···</span><span·class="p"·data-group-id="5036158311-5">[</span><span·class="p"·data-group-id="5036158311-6">{</span><span·class="ss">offset</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"-02:00"</span><span·class="p"·data-group-id="5036158311-6">}</span><span·cla[·...·truncated·by·diffoscope;·len:·85,·SHA:·e296e98dfb701789e89619bec4baf8f6db5735ac24793c9324bea455536b392f·...·]-3">)</span><span·class="p">.</span><span·class="w"> |
| 1939 | </span><span·class="s">"2018-04-23T10:56:52-02:00"</span><span·class="gp·unselectable"> | 1939 | </span><span·class="s">"2018-04-23T10:56:52-02:00"</span><span·class="gp·unselectable"> |
| 1940 | 3>·</span><span·class="nc">calendar</span><span·class="p">:</span><span·class="nf">system_time_to_rfc3339</span><span·class="p"·data-group-id=" | 1940 | 3>·</span><span·class="nc">calendar</span><span·class="p">:</span><span·class="nf">system_time_to_rfc3339</span><span·class="p"·data-group-id="5036158311-7">(</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">system_time</span><span·class="p"·data-group-id="5036158311-8">(</span><span·class="ss">second</span><span·class="p"·data-group-id="5036158311-8">)</span><span·class="p">,</span><span·class="w"> |
| 1941 | ···</span><span·class="p"·data-group-id=" | 1941 | ···</span><span·class="p"·data-group-id="5036158311-9">[</span><span·class="p"·data-group-id="5036158311-10">{</span><span·class="ss">offset</span><span·class="p">,</span><span·class="w">·</span><span·class="o">-</span><span·class="mi">7200</span><span·class="p"·data-group-id="5036158311-10">}</s[·...·truncated·by·diffoscope;·len:·98,·SHA:·c2c55f88a1c518b57cb22131b23b22c6808aa4085e3384d926d76be99c038f38·...·]-7">)</span><span·class="p">.</span><span·class="w"> |
| 1942 | </span><span·class="s">"2018-04-23T10:57:05-02:00"</span><span·class="gp·unselectable"> | 1942 | </span><span·class="s">"2018-04-23T10:57:05-02:00"</span><span·class="gp·unselectable"> |
| 1943 | 4>·</span><span·class="nc">calendar</span><span·class="p">:</span><span·class="nf">system_time_to_rfc3339</span><span·class="p"·data-group-id=" | 1943 | 4>·</span><span·class="nc">calendar</span><span·class="p">:</span><span·class="nf">system_time_to_rfc3339</span><span·class="p"·data-group-id="5036158311-11">(</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">system_time</span><span·class="p"·data-group-id="5036158311-12">(</span><span·class="ss">millisecond</span><span·class="p"·data-group-id="5036158311-12">)</span><span·class="p">,</span><span·class="w"> |
| 1944 | ···</span><span·class="p"·data-group-id=" | 1944 | ···</span><span·class="p"·data-group-id="5036158311-13">[</span><span·class="p"·data-group-id="5036158311-14">{</span><span·class="ss">unit</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">millisecond</span><span·class="p"·data-group-id="5036158311-14">}</span><span·class="p[·...·truncated·by·diffoscope;·len:·621,·SHA:·6a89a27d5e48d9eb79959b768508dd8abb95be9b4b58d19ae9ff1ebb97f41e9a·...·]-11">)</span><span·class="p">.</span><span·class="w"> |
| 1945 | </span><span·class="s">"2018-04-23·12:57:20.482Z"</span></code></pre> | 1945 | </span><span·class="s">"2018-04-23·12:57:20.482Z"</span></code></pre> |
| 1946 | ··</section> | 1946 | ··</section> |
| 1947 | </section> | 1947 | </section> |
| 1948 | <section·class="detail"·id="system_time_to_universal_time/2"> | 1948 | <section·class="detail"·id="system_time_to_universal_time/2"> |
| 1949 | ··<div·class="detail-header"> | 1949 | ··<div·class="detail-header"> |
| 1950 | ····<a·href="#system_time_to_universal_time/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1950 | ····<a·href="#system_time_to_universal_time/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 1846, 22 lines modified | Offset 1846, 22 lines modified | ||
| 1846 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·lookup(Name,·Key)·->·Objects·|·{error,·Reason} | 1846 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·lookup(Name,·Key)·->·Objects·|·{error,·Reason} |
| 1847 | ················when·Name·::·<a·href="#t:tab_name/0">tab_name</a>(),·Key·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>(),·Objects·::·[<a·href="#t:object/0">object</a>()],·Reason·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> | 1847 | ················when·Name·::·<a·href="#t:tab_name/0">tab_name</a>(),·Key·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>(),·Objects·::·[<a·href="#t:object/0">object</a>()],·Reason·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 1848 | ······</div> | 1848 | ······</div> |
| 1849 | <p>Returns·a·list·of·all·objects·with·key·<code·class="inline">Key</code>·stored·in·table·<code·class="inline">Name</code>,·for | 1849 | <p>Returns·a·list·of·all·objects·with·key·<code·class="inline">Key</code>·stored·in·table·<code·class="inline">Name</code>,·for |
| 1850 | example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">dets</span><span·class="p">:</span><span·class="nf">open_file</span><span·class="p"·data-group-id=" | 1850 | example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">dets</span><span·class="p">:</span><span·class="nf">open_file</span><span·class="p"·data-group-id="2176384788-1">(</span><span·class="ss">abc</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2176384788-2">[</span><span·class="p"·data-group-id="2176384788-3">{</span><span·class="ss">type</span><span·class="p">,</span><[·...·truncated·by·diffoscope;·len:·197,·SHA:·db0be20975d99561a849f0229d3def4d1efd1f3e4dac2d959a886d8ca7c844b7·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 1851 | </span><span·class="p"·data-group-id=" | 1851 | </span><span·class="p"·data-group-id="2176384788-4">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="ss">abc</span><span·class="p"·data-group-id="2176384788-4">}</span><span·class="gp·unselectable"> |
| 1852 | 3>·</span><span·class="nc">dets</span><span·class="p">:</span><span·class="nf">insert</span><span·class="p"·data-group-id=" | 1852 | 3>·</span><span·class="nc">dets</span><span·class="p">:</span><span·class="nf">insert</span><span·class="p"·data-group-id="2176384788-5">(</span><span·class="ss">abc</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2176384788-6">{</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·cl[·...·truncated·by·diffoscope;·len:·111,·SHA:·5c29c1d729c1809a5dd494bec0841186bb981ebb3bf78f5888bcf2a60e35705e·...·]-5">)</span><span·class="p">.</span><span·class="w"> |
| 1853 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 1853 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 1854 | 4>·</span><span·class="nc">dets</span><span·class="p">:</span><span·class="nf">insert</span><span·class="p"·data-group-id=" | 1854 | 4>·</span><span·class="nc">dets</span><span·class="p">:</span><span·class="nf">insert</span><span·class="p"·data-group-id="2176384788-7">(</span><span·class="ss">abc</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2176384788-8">{</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·cl[·...·truncated·by·diffoscope;·len:·111,·SHA:·b66fe9a6fc4fb6042f2f3a1539fa2bbc01cec40095c7ec6fc18f9638e233dea3·...·]-7">)</span><span·class="p">.</span><span·class="w"> |
| 1855 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 1855 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 1856 | 5>·</span><span·class="nc">dets</span><span·class="p">:</span><span·class="nf">lookup</span><span·class="p"·data-group-id=" | 1856 | 5>·</span><span·class="nc">dets</span><span·class="p">:</span><span·class="nf">lookup</span><span·class="p"·data-group-id="2176384788-9">(</span><span·class="ss">abc</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="2176384788-9">)</span><span·class="p">.</span><span·class="w"> |
| 1857 | </span><span·class="p"·data-group-id=" | 1857 | </span><span·class="p"·data-group-id="2176384788-10">[</span><span·class="p"·data-group-id="2176384788-11">{</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="2176384788-11">}</span><s[·...·truncated·by·diffoscope;·len:·294,·SHA:·6c7c9b9ea52780344a65d395cca8340d46898d5b39fe4e0bc2d05530f7c20a03·...·]-10">]</span></code></pre><p>If·the·table·type·is·<code·class="inline">set</code>,·the·function·returns·either·the·empty·list·or·a·list |
| 1858 | with·one·object,·as·there·cannot·be·more·than·one·object·with·a·given·key.·If | 1858 | with·one·object,·as·there·cannot·be·more·than·one·object·with·a·given·key.·If |
| 1859 | the·table·type·is·<code·class="inline">bag</code>·or·<code·class="inline">duplicate_bag</code>,·the·function·returns·a·list·of | 1859 | the·table·type·is·<code·class="inline">bag</code>·or·<code·class="inline">duplicate_bag</code>,·the·function·returns·a·list·of |
| 1860 | arbitrary·length.</p><p>Notice·that·the·order·of·objects·returned·is·unspecified.·In·particular,·the | 1860 | arbitrary·length.</p><p>Notice·that·the·order·of·objects·returned·is·unspecified.·In·particular,·the |
| 1861 | order·in·which·objects·were·inserted·is·not·reflected.</p> | 1861 | order·in·which·objects·were·inserted·is·not·reflected.</p> |
| 1862 | ··</section> | 1862 | ··</section> |
| 1863 | </section> | 1863 | </section> |
| 1864 | <section·class="detail"·id="match/1"> | 1864 | <section·class="detail"·id="match/1"> |
| Offset 2666, 19 lines modified | Offset 2666, 19 lines modified | ||
| 2666 | by·<code·class="inline">qlc</code>:</p><ul><li>Simple·filters·are·translated·into·equivalent·match·specifications.</li><li>More·complicated·filters·must·be·applied·to·all·objects·returned·by | 2666 | by·<code·class="inline">qlc</code>:</p><ul><li>Simple·filters·are·translated·into·equivalent·match·specifications.</li><li>More·complicated·filters·must·be·applied·to·all·objects·returned·by |
| 2667 | <a·href="#select/3"><code·class="inline">select/3</code></a>·given·a·match·specification·that·matches·all | 2667 | <a·href="#select/3"><code·class="inline">select/3</code></a>·given·a·match·specification·that·matches·all |
| 2668 | objects.</li></ul></li><li><p><code·class="inline">{select,</code>·<a·href="#t:match_spec/0"><code·class="inline">match_spec/0</code></a>·<code·class="inline">}</code>·-·As·for·<code·class="inline">select</code>,·the·table·is·traversed·by | 2668 | objects.</li></ul></li><li><p><code·class="inline">{select,</code>·<a·href="#t:match_spec/0"><code·class="inline">match_spec/0</code></a>·<code·class="inline">}</code>·-·As·for·<code·class="inline">select</code>,·the·table·is·traversed·by |
| 2669 | calling·<a·href="#select/3"><code·class="inline">dets:select/3</code></a>·and·<a·href="#select/1"><code·class="inline">dets:select/1</code></a>.·The·difference·is·that·the·match | 2669 | calling·<a·href="#select/3"><code·class="inline">dets:select/3</code></a>·and·<a·href="#select/1"><code·class="inline">dets:select/1</code></a>.·The·difference·is·that·the·match |
| 2670 | specification·is·specified·explicitly.·This·is·how·to·state·match | 2670 | specification·is·specified·explicitly.·This·is·how·to·state·match |
| 2671 | specifications·that·cannot·easily·be·expressed·within·the·syntax·provided·by | 2671 | specifications·that·cannot·easily·be·expressed·within·the·syntax·provided·by |
| 2672 | <code·class="inline">qlc</code>.</p></li></ul><p>The·following·example·uses·an·explicit·match·specification·to·traverse·the | 2672 | <code·class="inline">qlc</code>.</p></li></ul><p>The·following·example·uses·an·explicit·match·specification·to·traverse·the |
| 2673 | table:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">dets</span><span·class="p">:</span><span·class="nf">open_file</span><span·class="p"·data-group-id=" | 2673 | table:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">dets</span><span·class="p">:</span><span·class="nf">open_file</span><span·class="p"·data-group-id="0963016161-1">(</span><span·class="ss">t</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0963016161-2">[</span><span·class="p"·data-group-id="0963016161-2">]</span><span·class="p"·data-group-id="0963016161-1">)</span><span·class="p">,</span><span·class="w"> |
| 2674 | </span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">dets</span><span·class="p">:</span><span·class="nf">insert</span><span·class="p"·data-group-id=" | 2674 | </span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">dets</span><span·class="p">:</span><span·class="nf">insert</span><span·class="p"·data-group-id="0963016161-3">(</span><span·class="ss">t</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0963016161-4">[</span><span·class="p"·data-group-id="0963016161-5">{</span><span·class="mi">1</span><span·class="p">,</span><span·[·...·truncated·by·diffoscope;·len:·778,·SHA:·06fdc243166d86b6cf91e4bdb8a9ead023461aa63695b5cd63601f814922edf3·...·]-3">)</span><span·class="p">,</span><span·class="w"> |
| 2675 | </span><span·class="n">MS</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">fun2ms</span><span·class="p"·data-group-id=" | 2675 | </span><span·class="n">MS</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">fun2ms</span><span·class="p"·data-group-id="0963016161-9">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="0963016161-10">(</span><span·class="p"·data-group-id="0963016161-11">{</span><span·class="n">X</span><span·class="p">,</span><span·class="n">Y</span><span·class="p"·data-group-[·...·truncated·by·diffoscope;·len:·994,·SHA:·0e0ca9e0cba4739826c619c39378b0beae6c9aa38545ac2b0353b3c4af4d84c2·...·]-9">)</span><span·class="p">,</span><span·class="w"> |
| 2676 | </span><span·class="n">QH1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">dets</span><span·class="p">:</span><span·class="nf">table</span><span·class="p"·data-group-id=" | 2676 | </span><span·class="n">QH1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">dets</span><span·class="p">:</span><span·class="nf">table</span><span·class="p"·data-group-id="0963016161-15">(</span><span·class="ss">t</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0963016161-16">[</span><span·class="p"·data-group-id="0963016161-17">{</span><span·class="ss">traverse</span><span·class="p">,</s[·...·truncated·by·diffoscope;·len:·2206,·SHA:·39a0dd36fdecdca5c61161e30acfdd9c4baeafb2ed00e423342dc7a71980549d·...·]-1">)</span><span·class="p">.</span></code></pre><p>The·latter·example·is·equivalent·to·the·former,·which·can·be·verified·using |
| 2677 | function·<a·href="qlc.html#info/1"><code·class="inline">qlc:info/1</code></a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="nc">qlc</span><span·class="p">:</span><span·class="nf">info</span><span·class="p"·data-group-id=" | 2677 | function·<a·href="qlc.html#info/1"><code·class="inline">qlc:info/1</code></a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="nc">qlc</span><span·class="p">:</span><span·class="nf">info</span><span·class="p"·data-group-id="6105313525-1">(</span><span·class="n">QH1</span><span·class="p"·data-group-id="6105313525-1">)</span><span·class="w">·</span><span·class="o">=:=</span><span·class="w">·</span><span·class="nc">qlc</span><span·class="p">:</span><span·class="nf">info</span><s[·...·truncated·by·diffoscope;·len:·118,·SHA:·b44e43ff846e335e810d9db5ce062ff2ad35a6d755f7c97e352c17ec95499556·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 2678 | </span><span·class="ss">true</span></code></pre><p><a·href="qlc.html#info/1"><code·class="inline">qlc:info/1</code></a>·returns·information·about·a·query·handle.·In·this·case·identical | 2678 | </span><span·class="ss">true</span></code></pre><p><a·href="qlc.html#info/1"><code·class="inline">qlc:info/1</code></a>·returns·information·about·a·query·handle.·In·this·case·identical |
| 2679 | information·is·returned·for·the·two·query·handles.</p> | 2679 | information·is·returned·for·the·two·query·handles.</p> |
| 2680 | ··</section> | 2680 | ··</section> |
| 2681 | </section> | 2681 | </section> |
| 2682 | <section·class="detail"·id="to_ets/2"> | 2682 | <section·class="detail"·id="to_ets/2"> |
| 2683 | ··<div·class="detail-header"> | 2683 | ··<div·class="detail-header"> |
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| 2740 | ······················Reason·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> | 2740 | ······················Reason·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 2741 | ······</div> | 2741 | ······</div> |
| 2742 | <p>Applies·<code·class="inline">Fun</code>·to·each·object·stored·in·table·<code·class="inline">Name</code>·in·some·unspecified·order. | 2742 | <p>Applies·<code·class="inline">Fun</code>·to·each·object·stored·in·table·<code·class="inline">Name</code>·in·some·unspecified·order. |
| 2743 | Different·actions·are·taken·depending·on·the·return·value·of·<code·class="inline">Fun</code>.·The | 2743 | Different·actions·are·taken·depending·on·the·return·value·of·<code·class="inline">Fun</code>.·The |
| 2744 | following·<code·class="inline">Fun</code>·return·values·are·allowed:</p><ul><li><p><strong><code·class="inline">continue</code></strong>·-·Continue·to·perform·the·traversal.·For·example,·the·following | 2744 | following·<code·class="inline">Fun</code>·return·values·are·allowed:</p><ul><li><p><strong><code·class="inline">continue</code></strong>·-·Continue·to·perform·the·traversal.·For·example,·the·following |
| 2745 | function·can·be·used·to·print·the·contents·of·a·table:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="p"·data-group-id=" | 2745 | function·can·be·used·to·print·the·contents·of·a·table:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="p"·data-group-id="4276411305-1">(</span><span·class="n">X</span><span·class="p"·data-group-id="4276411305-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><[·...·truncated·by·diffoscope;·len:·381,·SHA:·06598f563fbec3759ddf0eaf5b4ed3d32b580a68d926ae2188282f5d01e49115·...·]-2">)</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">continue</span><span·class="w">·</span><span·class="k">end</span><span·class="p">.</span></code></pre></li><li><p><strong><code·class="inline">{continue,·Val}</code></strong>·-·Continue·the·traversal·and·accumulate·<code·class="inline">Val</code>.·The |
| 2746 | following·function·is·supplied·to·collect·all·objects·of·a·table·in·a·list:</p><pre><code·class="text">fun(X)·->·{continue,·X}·end.</code></pre></li><li><p><strong><code·class="inline">{done,·Value}</code></strong>·-·Terminate·the·traversal·and·return·<code·class="inline">[Value·|·Acc]</code>.</p></li></ul><p>Any·other·value·<code·class="inline">OtherValue</code>·returned·by·<code·class="inline">Fun</code>·terminates·the·traversal·and·is | 2746 | following·function·is·supplied·to·collect·all·objects·of·a·table·in·a·list:</p><pre><code·class="text">fun(X)·->·{continue,·X}·end.</code></pre></li><li><p><strong><code·class="inline">{done,·Value}</code></strong>·-·Terminate·the·traversal·and·return·<code·class="inline">[Value·|·Acc]</code>.</p></li></ul><p>Any·other·value·<code·class="inline">OtherValue</code>·returned·by·<code·class="inline">Fun</code>·terminates·the·traversal·and·is |
| 2747 | returned·immediately.</p> | 2747 | returned·immediately.</p> |
| 2748 | ··</section> | 2748 | ··</section> |
| 2749 | </section> | 2749 | </section> |
| 2750 | <section·class="detail"·id="update_counter/3"> | 2750 | <section·class="detail"·id="update_counter/3"> |
| 2751 | ··<div·class="detail-header"> | 2751 | ··<div·class="detail-header"> |
| Offset 134, 21 lines modified | Offset 134, 21 lines modified | ||
| 134 | do·not·compare·equal·(<code·class="inline">==</code>).</p><h2·id="module-notes"·class="section-heading"> | 134 | do·not·compare·equal·(<code·class="inline">==</code>).</p><h2·id="module-notes"·class="section-heading"> |
| 135 | ··<a·href="#module-notes"·class="hover-link"> | 135 | ··<a·href="#module-notes"·class="hover-link"> |
| 136 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 136 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 137 | ··</a> | 137 | ··</a> |
| 138 | ··<span·class="text">Notes</span> | 138 | ··<span·class="text">Notes</span> |
| 139 | </h2> | 139 | </h2> |
| 140 | <p><a·href=""·id="notes"></a></p><p>Functions·<code·class="inline">append</code>·and·<code·class="inline">append_list</code>·are·included·so·that·keyed·values·can·be | 140 | <p><a·href=""·id="notes"></a></p><p>Functions·<code·class="inline">append</code>·and·<code·class="inline">append_list</code>·are·included·so·that·keyed·values·can·be |
| 141 | stored·in·a·list·<em>accumulator</em>,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">D0</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">dict</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id=" | 141 | stored·in·a·list·<em>accumulator</em>,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">D0</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">dict</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id="3127777872-1">(</span><span·class="p"·data-group-id="3127777872-1">)</span><span·class="p">,</span><span·class="w"> |
| 142 | ··</span><span·class="n">D1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">dict</span><span·class="p">:</span><span·class="nf">store</span><span·class="p"·data-group-id=" | 142 | ··</span><span·class="n">D1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">dict</span><span·class="p">:</span><span·class="nf">store</span><span·class="p"·data-group-id="3127777872-2">(</span><span·class="ss">files</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3127777872-3">[</span><span·class="p"·data-group-id="3127777872-3">]</span><span·class="p">,</span><span·class="w">·</span><sp[·...·truncated·by·diffoscope;·len:·63,·SHA:·ff3ee29f566f54ac416b5d39def174e5d39534502ac6c7848fa8aba06abeeaf0·...·]-2">)</span><span·class="p">,</span><span·class="w"> |
| 143 | ··</span><span·class="n">D2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">dict</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id=" | 143 | ··</span><span·class="n">D2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">dict</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id="3127777872-4">(</span><span·class="ss">files</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">f1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">D1</span><span·class="p"·data-group-id="3127777872-4">)</span><span·class="p">,</span><span·class="w"> |
| 144 | ··</span><span·class="n">D3</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">dict</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id=" | 144 | ··</span><span·class="n">D3</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">dict</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id="3127777872-5">(</span><span·class="ss">files</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">f2</span><span·class="p">,</span><span·class="w">·</span><span·class="n">D2</span><span·class="p"·data-group-id="3127777872-5">)</span><span·class="p">,</span><span·class="w"> |
| 145 | ··</span><span·class="n">D4</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">dict</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id=" | 145 | ··</span><span·class="n">D4</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">dict</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id="3127777872-6">(</span><span·class="ss">files</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">f3</span><span·class="p">,</span><span·class="w">·</span><span·class="n">D3</span><span·class="p"·data-group-id="3127777872-6">)</span><span·class="p">,</span><span·class="w"> |
| 146 | ··</span><span·class="nc">dict</span><span·class="p">:</span><span·class="nf">fetch</span><span·class="p"·data-group-id=" | 146 | ··</span><span·class="nc">dict</span><span·class="p">:</span><span·class="nf">fetch</span><span·class="p"·data-group-id="3127777872-7">(</span><span·class="ss">files</span><span·class="p">,</span><span·class="w">·</span><span·class="n">D4</span><span·class="p"·data-group-id="3127777872-7">)</span><span·class="p">.</span><span·class="w"> |
| 147 | </span><span·class="p"·data-group-id=" | 147 | </span><span·class="p"·data-group-id="3127777872-8">[</span><span·class="ss">f1</span><span·class="p">,</span><span·class="ss">f2</span><span·class="p">,</span><span·class="ss">f3</span><span·class="p"·data-group-id="3127777872-8">]</span></code></pre><p>This·saves·the·trouble·of·first·fetching·a·keyed·value,·appending·a·new·value·to |
| 148 | the·list·of·stored·values,·and·storing·the·result.</p><p>Function·<code·class="inline">fetch</code>·is·to·be·used·if·the·key·is·known·to·be·in·the·dictionary, | 148 | the·list·of·stored·values,·and·storing·the·result.</p><p>Function·<code·class="inline">fetch</code>·is·to·be·used·if·the·key·is·known·to·be·in·the·dictionary, |
| 149 | otherwise·function·<code·class="inline">find</code>.</p><h2·id="module-see-also"·class="section-heading"> | 149 | otherwise·function·<code·class="inline">find</code>.</p><h2·id="module-see-also"·class="section-heading"> |
| 150 | ··<a·href="#module-see-also"·class="hover-link"> | 150 | ··<a·href="#module-see-also"·class="hover-link"> |
| 151 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 151 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 152 | ··</a> | 152 | ··</a> |
| 153 | ··<span·class="text">See·Also</span> | 153 | ··<span·class="text">See·Also</span> |
| 154 | </h2> | 154 | </h2> |
| Offset 871, 18 lines modified | Offset 871, 18 lines modified | ||
| 871 | ······</div> | 871 | ······</div> |
| 872 | <p>Merges·two·dictionaries,·<code·class="inline">Dict1</code>·and·<code·class="inline">Dict2</code>,·to·create·a·new·dictionary.·All | 872 | <p>Merges·two·dictionaries,·<code·class="inline">Dict1</code>·and·<code·class="inline">Dict2</code>,·to·create·a·new·dictionary.·All |
| 873 | the·<code·class="inline">Key</code>-<code·class="inline">Value</code>·pairs·from·both·dictionaries·are·included·in·the·new | 873 | the·<code·class="inline">Key</code>-<code·class="inline">Value</code>·pairs·from·both·dictionaries·are·included·in·the·new |
| 874 | dictionary.·If·a·key·occurs·in·both·dictionaries,·<code·class="inline">Fun</code>·is·called·with·the·key | 874 | dictionary.·If·a·key·occurs·in·both·dictionaries,·<code·class="inline">Fun</code>·is·called·with·the·key |
| 875 | and·both·values·to·return·a·new·value.·<code·class="inline">merge</code>·can·be·defined·as·follows,·but·is | 875 | and·both·values·to·return·a·new·value.·<code·class="inline">merge</code>·can·be·defined·as·follows,·but·is |
| 876 | faster:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">merge</span><span·class="p"·data-group-id=" | 876 | faster:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">merge</span><span·class="p"·data-group-id="8693769602-1">(</span><span·class="n">Fun</span><span·class="p">,</span><span·class="w">·</span><span·class="n">D1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">D2</span><span·class="p"·data-group-id="8693769602-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 877 | ····</span><span·class="nf">fold</span><span·class="p"·data-group-id=" | 877 | ····</span><span·class="nf">fold</span><span·class="p"·data-group-id="8693769602-2">(</span><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="8693769602-3">(</span><span·class="n">K</span><span·class="p">,</span><span·class="w">·</span><span·class="n">V1</span><span·class="p">,</span><span·cla[·...·truncated·by·diffoscope;·len:·80,·SHA:·e191d2734c5a61c7c03016d1e78df71a760a6a83cdb0ade0c71e60fe379914ea·...·]-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 878 | ·················</span><span·class="nf">update</span><span·class="p"·data-group-id=" | 878 | ·················</span><span·class="nf">update</span><span·class="p"·data-group-id="8693769602-4">(</span><span·class="n">K</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="8693769602-5">(</span><span·class="n">V2</span><span·class="p"·data-group-id="86[·...·truncated·by·diffoscope;·len:·634,·SHA:·56ea40a2dc9e2fa013228560be91b9d41543af22a0238ec20f52b1834acf478b·...·]-4">)</span><span·class="w"> |
| 879 | ·········</span><span·class="k">end</span><span·class="p">,</span><span·class="w">·</span><span·class="n">D2</span><span·class="p">,</span><span·class="w">·</span><span·class="n">D1</span><span·class="p"·data-group-id=" | 879 | ·········</span><span·class="k">end</span><span·class="p">,</span><span·class="w">·</span><span·class="n">D2</span><span·class="p">,</span><span·class="w">·</span><span·class="n">D1</span><span·class="p"·data-group-id="8693769602-2">)</span><span·class="p">.</span></code></pre> |
| 880 | ··</section> | 880 | ··</section> |
| 881 | </section> | 881 | </section> |
| 882 | <section·class="detail"·id="new/0"> | 882 | <section·class="detail"·id="new/0"> |
| 883 | ··<div·class="detail-header"> | 883 | ··<div·class="detail-header"> |
| 884 | ····<a·href="#new/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 884 | ····<a·href="#new/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 885 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 885 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 1073, 16 lines modified | Offset 1073, 16 lines modified | ||
| 1073 | ····················Fun·::·fun((Value1·::·Value)·->·Value2·::·Value), | 1073 | ····················Fun·::·fun((Value1·::·Value)·->·Value2·::·Value), |
| 1074 | ····················Initial·::·Value.</pre> | 1074 | ····················Initial·::·Value.</pre> |
| 1075 | ······</div> | 1075 | ······</div> |
| 1076 | <p>Updates·a·value·in·a·dictionary·by·calling·<code·class="inline">Fun</code>·on·the·value·to·get·a·new | 1076 | <p>Updates·a·value·in·a·dictionary·by·calling·<code·class="inline">Fun</code>·on·the·value·to·get·a·new |
| 1077 | value.·If·<code·class="inline">Key</code>·is·not·present·in·the·dictionary,·<code·class="inline">Initial</code>·is·stored·as·the | 1077 | value.·If·<code·class="inline">Key</code>·is·not·present·in·the·dictionary,·<code·class="inline">Initial</code>·is·stored·as·the |
| 1078 | first·value.·For·example,·<a·href="#append/3"><code·class="inline">append/3</code></a>·can·be·defined·as:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">append</span><span·class="p"·data-group-id=" | 1078 | first·value.·For·example,·<a·href="#append/3"><code·class="inline">append/3</code></a>·can·be·defined·as:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">append</span><span·class="p"·data-group-id="5651097486-1">(</span><span·class="n">Key</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Val</span><span·class="p">,</span><span·class="w">·</span><span·class="n">D</span><span·class="p"·data-group-id="5651097486-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1079 | ····</span><span·class="nf">update</span><span·class="p"·data-group-id=" | 1079 | ····</span><span·class="nf">update</span><span·class="p"·data-group-id="5651097486-2">(</span><span·class="n">Key</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="5651097486-3">(</span><span·class="n">Old</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·673,·SHA:·87882357c461b73d4840968e3298786ebb56c658ccb69c6e34c6590d4b900c4e·...·]-2">)</span><span·class="p">.</span></code></pre> |
| 1080 | ··</section> | 1080 | ··</section> |
| 1081 | </section> | 1081 | </section> |
| 1082 | <section·class="detail"·id="update_counter/3"> | 1082 | <section·class="detail"·id="update_counter/3"> |
| 1083 | ··<div·class="detail-header"> | 1083 | ··<div·class="detail-header"> |
| 1084 | ····<a·href="#update_counter/3"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1084 | ····<a·href="#update_counter/3"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1085 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1085 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 1103, 16 lines modified | Offset 1103, 16 lines modified | ||
| 1103 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·update_counter(Key,·Increment,·Dict1)·->·Dict2 | 1103 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·update_counter(Key,·Increment,·Dict1)·->·Dict2 |
| 1104 | ························when·Dict1·::·<a·href="#t:dict/2">dict</a>(Key,·Value),·Dict2·::·<a·href="#t:dict/2">dict</a>(Key,·Value),·Increment·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:number/0">number</a>().</pre> | 1104 | ························when·Dict1·::·<a·href="#t:dict/2">dict</a>(Key,·Value),·Dict2·::·<a·href="#t:dict/2">dict</a>(Key,·Value),·Increment·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:number/0">number</a>().</pre> |
| 1105 | ······</div> | 1105 | ······</div> |
| 1106 | <p>Adds·<code·class="inline">Increment</code>·to·the·value·associated·with·<code·class="inline">Key</code>·and·stores·this·value.·If | 1106 | <p>Adds·<code·class="inline">Increment</code>·to·the·value·associated·with·<code·class="inline">Key</code>·and·stores·this·value.·If |
| 1107 | <code·class="inline">Key</code>·is·not·present·in·the·dictionary,·<code·class="inline">Increment</code>·is·stored·as·the·first | 1107 | <code·class="inline">Key</code>·is·not·present·in·the·dictionary,·<code·class="inline">Increment</code>·is·stored·as·the·first |
| 1108 | value.</p><p>This·can·be·defined·as·follows,·but·is·faster:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">update_counter</span><span·class="p"·data-group-id=" | 1108 | value.</p><p>This·can·be·defined·as·follows,·but·is·faster:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">update_counter</span><span·class="p"·data-group-id="4146786156-1">(</span><span·class="n">Key</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Incr</span><span·class="p">,</span><span·class="w">·</span><span·class="n">D</span><span·class="p"·data-group-id="4146786156-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1109 | ····</span><span·class="nf">update</span><span·class="p"·data-group-id=" | 1109 | ····</span><span·class="nf">update</span><span·class="p"·data-group-id="4146786156-2">(</span><span·class="n">Key</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="4146786156-3">(</span><span·class="n">Old</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·462,·SHA:·3a480a03e319114a59db5edabfbcb57471577ec524213d946edfc30fe17cc080·...·]-2">)</span><span·class="p">.</span></code></pre> |
| 1110 | ··</section> | 1110 | ··</section> |
| 1111 | </section> | 1111 | </section> |
| 1112 | ····</div> | 1112 | ····</div> |
| 1113 | ··</section> | 1113 | ··</section> |
| 1114 | ····<footer·class="footer"> | 1114 | ····<footer·class="footer"> |
| Offset 136, 15 lines modified | Offset 136, 15 lines modified | ||
| 136 | <code·class="inline">Latin-1</code>·and·<code·class="inline">UTF-8</code>,·where·the·case·of·the·characters·can·be·chosen·freely.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·coding:·utf-8</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·For·this·file·we·have·chosen·encoding·=·Latin-1</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·-*-·coding:·latin-1·-*-</span></code></pre><h2·id="module-error-information"·class="section-heading"> | 136 | <code·class="inline">Latin-1</code>·and·<code·class="inline">UTF-8</code>,·where·the·case·of·the·characters·can·be·chosen·freely.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·coding:·utf-8</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·For·this·file·we·have·chosen·encoding·=·Latin-1</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·-*-·coding:·latin-1·-*-</span></code></pre><h2·id="module-error-information"·class="section-heading"> |
| 137 | ··<a·href="#module-error-information"·class="hover-link"> | 137 | ··<a·href="#module-error-information"·class="hover-link"> |
| 138 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 138 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 139 | ··</a> | 139 | ··</a> |
| 140 | ··<span·class="text">Error·Information</span> | 140 | ··<span·class="text">Error·Information</span> |
| 141 | </h2> | 141 | </h2> |
| 142 | <p><code·class="inline">ErrorInfo</code>·is·the·standard·<code·class="inline">ErrorInfo</code>·structure·that·is·returned·from·all·I/O | 142 | <p><code·class="inline">ErrorInfo</code>·is·the·standard·<code·class="inline">ErrorInfo</code>·structure·that·is·returned·from·all·I/O |
| 143 | modules.·The·format·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 143 | modules.·The·format·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="3144556620-1">{</span><span·class="n">ErrorLine</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ErrorDescriptor</span><span·class="p"·data-group-id="31445566[·...·truncated·by·diffoscope;·len:·369,·SHA:·ce815885818120f97544248211c3f0fb17c29d56874a3d4819255dc7eb09ff2d·...·]-1">)</span></code></pre><h2·id="module-see-also"·class="section-heading"> |
| 144 | ··<a·href="#module-see-also"·class="hover-link"> | 144 | ··<a·href="#module-see-also"·class="hover-link"> |
| 145 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 145 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 146 | ··</a> | 146 | ··</a> |
| 147 | ··<span·class="text">See·Also</span> | 147 | ··<span·class="text">See·Also</span> |
| 148 | </h2> | 148 | </h2> |
| 149 | <p><a·href="erl_parse.html"><code·class="inline">erl_parse</code></a></p> | 149 | <p><a·href="erl_parse.html"><code·class="inline">erl_parse</code></a></p> |
| 150 | ····</section> | 150 | ····</section> |
| Offset 309, 15 lines modified | Offset 309, 15 lines modified | ||
| 309 | ······<div·class="specs"> | 309 | ······<div·class="specs"> |
| 310 | ··········<pre·translate="no"><span·class="attribute">-type</span>·format_fun()·::·fun((<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>(),·<a·href="#t:column/0">column</a>())·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:iolist/0">iolist</a>()).</pre> | 310 | ··········<pre·translate="no"><span·class="attribute">-type</span>·format_fun()·::·fun((<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>(),·<a·href="#t:column/0">column</a>())·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:iolist/0">iolist</a>()).</pre> |
| 311 | ······</div> | 311 | ······</div> |
| 312 | <p>A·fun·used·to·format·function·arguments·for·BIF·and·function·calls.·By·default | 312 | <p>A·fun·used·to·format·function·arguments·for·BIF·and·function·calls.·By·default |
| 313 | the·following·fun·will·be·used:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="p"·data-group-id=" | 313 | the·following·fun·will·be·used:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="p"·data-group-id="8933797372-1">(</span><span·class="n">Term</span><span·class="p">,</span><span·class="w">·</span><span·class="n">I</span><span·class="p"·data-group-id="8933797372-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·[·...·truncated·by·diffoscope;·len:·418,·SHA:·92a1b35ba5a5566e097272a278a1113f5bccf90e060f5f53414e81c29adf05f3·...·]-2">)</span><span·class="w">·</span><span·class="k">end</span></code></pre> |
| 314 | ··</section> | 314 | ··</section> |
| 315 | </section> | 315 | </section> |
| 316 | <section·class="detail"·id="t:format_options/0"> | 316 | <section·class="detail"·id="t:format_options/0"> |
| 317 | ··<div·class="detail-header"> | 317 | ··<div·class="detail-header"> |
| 318 | ····<a·href="#t:format_options/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·type"> | 318 | ····<a·href="#t:format_options/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·type"> |
| 319 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 319 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 424, 31 lines modified | Offset 424, 31 lines modified | ||
| 424 | <p>This·callback·is·called·when·<a·href="#format_exception/4"><code·class="inline">format_exception/4</code></a>·or·similar·functionality·wants | 424 | <p>This·callback·is·called·when·<a·href="#format_exception/4"><code·class="inline">format_exception/4</code></a>·or·similar·functionality·wants |
| 425 | to·provide·extra·information·about·an·error.·The·<code·class="inline">Module</code>:<code·class="inline">Function</code>·called·is | 425 | to·provide·extra·information·about·an·error.·The·<code·class="inline">Module</code>:<code·class="inline">Function</code>·called·is |
| 426 | the·one·specificed·by·the·<code·class="inline">error_info</code>·map.</p><p>The·function·should·return·a·map·with·additional·information·about·what·have | 426 | the·one·specificed·by·the·<code·class="inline">error_info</code>·map.</p><p>The·function·should·return·a·map·with·additional·information·about·what·have |
| 427 | caused·the·exception.·The·possible·keys·of·the·map·are:</p><ul><li><p><strong><code·class="inline">ArgumentPosition·=·pos_integer()</code></strong>·-·The·position·of·the·argument·that | 427 | caused·the·exception.·The·possible·keys·of·the·map·are:</p><ul><li><p><strong><code·class="inline">ArgumentPosition·=·pos_integer()</code></strong>·-·The·position·of·the·argument·that |
| 428 | caused·the·error·starting·at·1.</p></li><li><p><strong><code·class="inline">general</code></strong>·-·An·error·that·is·not·associated·with·any·argument·caused·the | 428 | caused·the·error·starting·at·1.</p></li><li><p><strong><code·class="inline">general</code></strong>·-·An·error·that·is·not·associated·with·any·argument·caused·the |
| 429 | error.</p></li><li><p><strong><code·class="inline">reason</code></strong>·-·If·the·<code·class="inline">Reason</code>·should·be·printed·differently·than·the·default | 429 | error.</p></li><li><p><strong><code·class="inline">reason</code></strong>·-·If·the·<code·class="inline">Reason</code>·should·be·printed·differently·than·the·default |
| 430 | way.</p></li></ul><p>If·the·text·returned·includes·new-lines,·<a·href="#format_exception/4"><code·class="inline">format_exception/4</code></a>·will·indent·the | 430 | way.</p></li></ul><p>If·the·text·returned·includes·new-lines,·<a·href="#format_exception/4"><code·class="inline">format_exception/4</code></a>·will·indent·the |
| 431 | text·correctly.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 431 | text·correctly.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="3728375378-1">(</span><span·class="ss">my_error_module</span><span·class="p"·data-group-id="3728375378-1">)</span><span·class="p">.</span><span·class="w"> |
| 432 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 432 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="3728375378-2">(</span><span·class="p"·data-group-id="3728375378-3">[</span><span·class="ss">atom_to_string</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">format_error</span><span·clas[·...·truncated·by·diffoscope;·len:·133,·SHA:·de820ecfba588c08d44a474805d695b138faf8501432a4e403bd467c9f60466e·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 433 | </span><span·class="nf">atom_to_string</span><span·class="p"·data-group-id=" | 433 | </span><span·class="nf">atom_to_string</span><span·class="p"·data-group-id="3728375378-4">(</span><span·class="n">Arg</span><span·class="p"·data-group-id="3728375378-4">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_atom</span><span·class="p"·data-group-id="3728375378-5">(</s[·...·truncated·by·diffoscope;·len:·71,·SHA:·e9fbad220f48d74f01fef7885f3500a9f94a3ba3584b55134f9a499b78622a18·...·]-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 434 | ··</span><span·class="nf">atom_to_list</span><span·class="p"·data-group-id=" | 434 | ··</span><span·class="nf">atom_to_list</span><span·class="p"·data-group-id="3728375378-6">(</span><span·class="n">Arg</span><span·class="p"·data-group-id="3728375378-6">)</span><span·class="p">;</span><span·class="w"> |
| 435 | </span><span·class="nf">atom_to_string</span><span·class="p"·data-group-id=" | 435 | </span><span·class="nf">atom_to_string</span><span·class="p"·data-group-id="3728375378-7">(</span><span·class="n">Arg</span><span·class="p"·data-group-id="3728375378-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 436 | ··</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">error</span><span·class="p"·data-group-id=" | 436 | ··</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">error</span><span·class="p"·data-group-id="3728375378-8">(</span><span·class="ss">badarg</span><span·class="p">,</span><span·class="p"·data-group-id="3728375378-9">[</span><span·class="n">Arg</span><span·class="p"·data-group-id="3728375378-9">]</span><span·class="p">,</span><span·class="w"> |
| 437 | ···············</span><span·class="p"·data-group-id=" | 437 | ···············</span><span·class="p"·data-group-id="3728375378-10">[</span><span·class="p"·data-group-id="3728375378-11">{</span><span·class="ss">error_info</span><span·class="p">,</span><span·class="p"·data-group-id="3728375378-12">#{</span><span·class="w">·</span><span·class="ss">module</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="o">?</span><span·class="n">MODULE</span><span·class="p">,</span><span·class="w"> |
| 438 | ·······························</span><span·class="ss">cause</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 438 | ·······························</span><span·class="ss">cause</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="3728375378-13">#{</span><span·class="w">·</span><span·class="mi">1</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"should·be·an·atom"</span><span·class="w">·</span><span·class="p"·data-group-id="[·...·truncated·by·diffoscope;·len:·226,·SHA:·816842f459d162122f08ecfe5a0c99e57c2fcc4f034827b966b6427c4e054be6·...·]-8">)</span><span·class="p">.</span><span·class="w"> |
| 439 | </span><span·class="nf">format_error</span><span·class="p"·data-group-id=" | 439 | </span><span·class="nf">format_error</span><span·class="p"·data-group-id="3728375378-14">(</span><span·class="n">Reason</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3728375378-15">[</span><span·class="p"·data-group-id="3728375378-16">{</span><span·class="p">_</span><span·class="n">M</span>[·...·truncated·by·diffoscope;·len:·393,·SHA:·94b8723f87f7349d568fa3da589844aa7862f670ccfb62bfd16c4241ab90e0a4·...·]-14">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 440 | ··</span><span·class="n">ErrorInfo</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id=" | 440 | ··</span><span·class="n">ErrorInfo</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id="3728375378-17">(</span><span·class="ss">error_info</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Info</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3728375378-18">#{</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·74,·SHA:·63b4d54121157de2785cceeaf2416e3c16c600bc1016ad43f6735cb7d5464ccb·...·]-17">)</span><span·class="p">,</span><span·class="w"> |
| 441 | ··</span><span·class="n">ErrorMap</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">get</span><span·class="p"·data-group-id=" | 441 | ··</span><span·class="n">ErrorMap</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">get</span><span·class="p"·data-group-id="3728375378-19">(</span><span·class="ss">cause</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ErrorInfo</span><span·class="p"·data-group-id="3728375378-19">)</span><span·class="p">,</span><span·class="w"> |
| 442 | ··</span><span·class="n">ErrorMap</span><span·class="p"·data-group-id=" | 442 | ··</span><span·class="n">ErrorMap</span><span·class="p"·data-group-id="3728375378-20">#{</span><span·class="w">·</span><span·class="ss">general</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"optional·general·information"</span><span·class="p">,</span><span·class="w"> |
| 443 | ·············</span><span·class="ss">reason</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nc">io_lib</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 443 | ·············</span><span·class="ss">reason</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nc">io_lib</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="3728375378-21">(</span><span·class="s">"</span><span·class="si">~p</span><span·class="s">:·</span><span·class="si">~p</span><span·class="s">"</span><span·class="p">,</span><span·class="p"·data-group-id="3728375378-22">[</span><span·class="o">?</s[·...·truncated·by·diffoscope;·len:·582,·SHA:·0a5e257b4b79a3ed3edfa6c42f67bb11faecadcd6e4e8045445208377a7ef162·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 444 | </span><span·class="p"·data-group-id=" | 444 | </span><span·class="p"·data-group-id="5584451003-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="ss">my_error_module</span><span·class="p"·data-group-id="5584451003-2">}</span><span·class="gp·unselectable"> |
| 445 | 2>·</span><span·class="nc">my_error_module</span><span·class="p">:</span><span·class="nf">atom_to_string</span><span·class="p"·data-group-id=" | 445 | 2>·</span><span·class="nc">my_error_module</span><span·class="p">:</span><span·class="nf">atom_to_string</span><span·class="p"·data-group-id="5584451003-3">(</span><span·class="mi">1</span><span·class="p"·data-group-id="5584451003-3">)</span><span·class="p">.</span><span·class="w"> |
| 446 | </span><span·class="gt">**·exception·error:·my_error_module:·badarg | 446 | </span><span·class="gt">**·exception·error:·my_error_module:·badarg |
| 447 | ·····in·function··my_error_module:atom_to_string/1 | 447 | ·····in·function··my_error_module:atom_to_string/1 |
| 448 | ········called·as·my_error_module:atom_to_string(1) | 448 | ········called·as·my_error_module:atom_to_string(1) |
| 449 | ········***·argument·1:·should·be·an·atom | 449 | ········***·argument·1:·should·be·an·atom |
| 450 | ········***·optional·general·information</span></code></pre> | 450 | ········***·optional·general·information</span></code></pre> |
| 451 | ··</section> | 451 | ··</section> |
| 452 | </section> | 452 | </section> |
| Offset 524, 26 lines modified | Offset 524, 26 lines modified | ||
| 524 | ······························StackTrace·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:stacktrace/0">erlang:stacktrace</a>(), | 524 | ······························StackTrace·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:stacktrace/0">erlang:stacktrace</a>(), |
| 525 | ······························Options·::·<a·href="#t:format_options/0">format_options</a>().</pre> | 525 | ······························Options·::·<a·href="#t:format_options/0">format_options</a>().</pre> |
| 526 | ······</div> | 526 | ······</div> |
| 527 | <p>Format·the·error·reason·and·stack·back-trace·caught·using·<code·class="inline">try</code>·...·<code·class="inline">catch</code>·in | 527 | <p>Format·the·error·reason·and·stack·back-trace·caught·using·<code·class="inline">try</code>·...·<code·class="inline">catch</code>·in |
| 528 | the·same·style·as·the·shell·formats·them.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">try</span><span·class="w"> | 528 | the·same·style·as·the·shell·formats·them.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">try</span><span·class="w"> |
| 529 | ····</span><span·class="nf">do_something</span><span·class="p"·data-group-id=" | 529 | ····</span><span·class="nf">do_something</span><span·class="p"·data-group-id="5655259617-1">(</span><span·class="p"·data-group-id="5655259617-1">)</span><span·class="w"> |
| 530 | </span><span·class="k">catch</span><span·class="w"> | 530 | </span><span·class="k">catch</span><span·class="w"> |
| 531 | ····</span><span·class="n">C</span><span·class="p">:</span><span·class="n">R</span><span·class="p">:</span><span·class="n">Stk</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 531 | ····</span><span·class="n">C</span><span·class="p">:</span><span·class="n">R</span><span·class="p">:</span><span·class="n">Stk</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 532 | ········</span><span·class="n">Message</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erl_error</span><span·class="p">:</span><span·class="nf">format_exception</span><span·class="p"·data-group-id=" | 532 | ········</span><span·class="n">Message</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erl_error</span><span·class="p">:</span><span·class="nf">format_exception</span><span·class="p"·data-group-id="5655259617-2">(</span><span·class="n">C</span><span·class="p">,</span><span·class="w">·</span><span·class="n">R</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Stk</span><span·class="p"·data-group-id="5655259617-2">)</span><span·class="p">,</span><span·class="w"> |
| 533 | ········</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 533 | ········</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="5655259617-3">(</span><span·class="n">LogFile</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"~ts\n"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5655259617-4">[</span><span·class="n"[·...·truncated·by·diffoscope;·len:·109,·SHA:·aed2747fc01e7f9e2d35f258715a6241e1d1a2ed926b486b6d566606458d8340·...·]-3">)</span><span·class="w"> |
| 534 | </span><span·class="k">end</span></code></pre><p>If·<code·class="inline">error_info</code>·is·provided·with·the·exception,·<code·class="inline">format_exception</code>·will·use·that | 534 | </span><span·class="k">end</span></code></pre><p>If·<code·class="inline">error_info</code>·is·provided·with·the·exception,·<code·class="inline">format_exception</code>·will·use·that |
| 535 | information·to·provide·additional·information·about·the·exception.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">try</span><span·class="w"> | 535 | information·to·provide·additional·information·about·the·exception.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">try</span><span·class="w"> |
| 536 | ··</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">raise</span><span·class="p"·data-group-id=" | 536 | ··</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">raise</span><span·class="p"·data-group-id="1704191111-1">(</span><span·class="ss">badarg</span><span·class="p">,</span><span·class="p"·data-group-id="1704191111-2">[</span><span·class="p"·data-group-id="1704191111-2">]</span><span·class="p">,</span><span·class="p"·data-group-id="1704191111-3">[</sp[·...·truncated·by·diffoscope;·len:·368,·SHA:·e831ebbf66866198ce81cbbe95a574bfa694bbc737dca70c98f493e723f93dd5·...·]-1">)</span><span·class="w"> |
| 537 | </span><span·class="k">catch</span><span·class="w"> | 537 | </span><span·class="k">catch</span><span·class="w"> |
| 538 | ····</span><span·class="n">C</span><span·class="p">:</span><span·class="n">R</span><span·class="p">:</span><span·class="n">Stk</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 538 | ····</span><span·class="n">C</span><span·class="p">:</span><span·class="n">R</span><span·class="p">:</span><span·class="n">Stk</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 539 | ········</span><span·class="n">Message</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erl_error</span><span·class="p">:</span><span·class="nf">format_exception</span><span·class="p"·data-group-id=" | 539 | ········</span><span·class="n">Message</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erl_error</span><span·class="p">:</span><span·class="nf">format_exception</span><span·class="p"·data-group-id="1704191111-6">(</span><span·class="n">C</span><span·class="p">,</span><span·class="w">·</span><span·class="n">R</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Stk</span><span·class="p"·data-group-id="1704191111-6">)</span><span·class="p">,</span><span·class="w"> |
| 540 | ········</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 540 | ········</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="1704191111-7">(</span><span·class="n">LogFile</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"~ts\n"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1704191111-8">[</span><span·class="n"[·...·truncated·by·diffoscope;·len:·109,·SHA:·1a1a68b5d2e1f72aa20c4f89d16faf39f6fa275791fd0a645dfaee1bd10d4237·...·]-7">)</span><span·class="w"> |
| 541 | </span><span·class="k">end</span></code></pre><p>See·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#error/3"><code·class="inline">erlang:error/3</code></a>·for·details·on·how·to·raise·an·exception·with·<code·class="inline">error_info</code> | 541 | </span><span·class="k">end</span></code></pre><p>See·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#error/3"><code·class="inline">erlang:error/3</code></a>·for·details·on·how·to·raise·an·exception·with·<code·class="inline">error_info</code> |
| 542 | included.</p> | 542 | included.</p> |
| 543 | ··</section> | 543 | ··</section> |
| 544 | </section> | 544 | </section> |
| 545 | ····</div> | 545 | ····</div> |
| 546 | ··</section> | 546 | ··</section> |
| Offset 137, 35 lines modified | Offset 137, 35 lines modified | ||
| 137 | ··<span·class="text">Local·Function·Handler</span> | 137 | ··<span·class="text">Local·Function·Handler</span> |
| 138 | </h2> | 138 | </h2> |
| 139 | <p>During·evaluation·of·a·function,·no·calls·can·be·made·to·local·functions.·An | 139 | <p>During·evaluation·of·a·function,·no·calls·can·be·made·to·local·functions.·An |
| 140 | undefined·function·error·would·be·generated.·However,·the·optional·argument | 140 | undefined·function·error·would·be·generated.·However,·the·optional·argument |
| 141 | <code·class="inline">LocalFunctionHandler</code>·can·be·used·to·define·a·function·that·is·called·when | 141 | <code·class="inline">LocalFunctionHandler</code>·can·be·used·to·define·a·function·that·is·called·when |
| 142 | there·is·a·call·to·a·local·function.·The·argument·can·have·the·following | 142 | there·is·a·call·to·a·local·function.·The·argument·can·have·the·following |
| 143 | formats:</p><ul><li><p><strong><code·class="inline">{value,Func}</code></strong>·-·This·defines·a·local·function·handler·that·is·called | 143 | formats:</p><ul><li><p><strong><code·class="inline">{value,Func}</code></strong>·-·This·defines·a·local·function·handler·that·is·called |
| 144 | with:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Func</span><span·class="p"·data-group-id=" | 144 | with:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Func</span><span·class="p"·data-group-id="3378273403-1">(</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Arguments</span><span·class="p"·data-group-id="3378273403-1">)</span></code></pre><p><code·class="inline">Name</code>·is·the·name·of·the·local·function·(an·atom)·and·<code·class="inline">Arguments</code>·is·a·list |
| 145 | of·the·<em>evaluated</em>·arguments.·The·function·handler·returns·the·value·of·the | 145 | of·the·<em>evaluated</em>·arguments.·The·function·handler·returns·the·value·of·the |
| 146 | local·function.·In·this·case,·the·current·bindings·cannot·be·accessed.·To | 146 | local·function.·In·this·case,·the·current·bindings·cannot·be·accessed.·To |
| 147 | signal·an·error,·the·function·handler·calls·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#exit/1"><code·class="inline">exit/1</code></a>·with·a | 147 | signal·an·error,·the·function·handler·calls·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#exit/1"><code·class="inline">exit/1</code></a>·with·a |
| 148 | suitable·exit·value.</p></li><li><p><strong><code·class="inline">{eval,Func}</code></strong>·-·This·defines·a·local·function·handler·that·is·called·with:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Func</span><span·class="p"·data-group-id=" | 148 | suitable·exit·value.</p></li><li><p><strong><code·class="inline">{eval,Func}</code></strong>·-·This·defines·a·local·function·handler·that·is·called·with:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Func</span><span·class="p"·data-group-id="3867083665-1">(</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Arguments</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Bindings</span><span·class="p"·data-group-id="3867083665-1">)</span></code></pre><p><code·class="inline">Name</code>·is·the·name·of·the·local·function·(an·atom),·<code·class="inline">Arguments</code>·is·a·list·of |
| 149 | the·<em>unevaluated</em>·arguments,·and·<code·class="inline">Bindings</code>·are·the·current·variable·bindings. | 149 | the·<em>unevaluated</em>·arguments,·and·<code·class="inline">Bindings</code>·are·the·current·variable·bindings. |
| 150 | The·function·handler·returns:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 150 | The·function·handler·returns:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="2754442251-1">{</span><span·class="ss">value</span><span·class="p">,</span><span·class="n">Value</span><span·class="p">,</span><span·class="n">NewBindings</span><span·class="p"·data-group-id="2754442251-1">}</span></code></pre><p><code·class="inline">Value</code>·is·the·value·of·the·local·function·and·<code·class="inline">NewBindings</code>·are·the·updated |
| 151 | variable·bindings.·In·this·case,·the·function·handler·must·itself·evaluate·all | 151 | variable·bindings.·In·this·case,·the·function·handler·must·itself·evaluate·all |
| 152 | the·function·arguments·and·manage·the·bindings.·To·signal·an·error,·the | 152 | the·function·arguments·and·manage·the·bindings.·To·signal·an·error,·the |
| 153 | function·handler·calls·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#exit/1"><code·class="inline">exit/1</code></a>·with·a·suitable·exit·value.</p></li><li><p><strong><code·class="inline">none</code></strong>·-·There·is·no·local·function·handler.</p></li></ul><h2·id="module-non-local-function-handler"·class="section-heading"> | 153 | function·handler·calls·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#exit/1"><code·class="inline">exit/1</code></a>·with·a·suitable·exit·value.</p></li><li><p><strong><code·class="inline">none</code></strong>·-·There·is·no·local·function·handler.</p></li></ul><h2·id="module-non-local-function-handler"·class="section-heading"> |
| 154 | ··<a·href="#module-non-local-function-handler"·class="hover-link"> | 154 | ··<a·href="#module-non-local-function-handler"·class="hover-link"> |
| 155 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 155 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 156 | ··</a> | 156 | ··</a> |
| 157 | ··<span·class="text">Non-Local·Function·Handler</span> | 157 | ··<span·class="text">Non-Local·Function·Handler</span> |
| 158 | </h2> | 158 | </h2> |
| 159 | <p>The·optional·argument·<code·class="inline">NonLocalFunctionHandler</code>·can·be·used·to·define·a·function | 159 | <p>The·optional·argument·<code·class="inline">NonLocalFunctionHandler</code>·can·be·used·to·define·a·function |
| 160 | that·is·called·in·the·following·cases:</p><ul><li>A·functional·object·(fun)·is·called.</li><li>A·built-in·function·is·called.</li><li>A·function·is·called·using·the·<code·class="inline">M:F</code>·syntax,·where·<code·class="inline">M</code>·and·<code·class="inline">F</code>·are·atoms·or | 160 | that·is·called·in·the·following·cases:</p><ul><li>A·functional·object·(fun)·is·called.</li><li>A·built-in·function·is·called.</li><li>A·function·is·called·using·the·<code·class="inline">M:F</code>·syntax,·where·<code·class="inline">M</code>·and·<code·class="inline">F</code>·are·atoms·or |
| 161 | expressions.</li><li>An·operator·<code·class="inline">Op/A</code>·is·called·(this·is·handled·as·a·call·to·function | 161 | expressions.</li><li>An·operator·<code·class="inline">Op/A</code>·is·called·(this·is·handled·as·a·call·to·function |
| 162 | <code·class="inline">erlang:Op/A</code>).</li></ul><p>Exceptions·are·calls·to·<code·class="inline">erlang:apply/2,3</code>;·neither·of·the·function·handlers·are | 162 | <code·class="inline">erlang:Op/A</code>).</li></ul><p>Exceptions·are·calls·to·<code·class="inline">erlang:apply/2,3</code>;·neither·of·the·function·handlers·are |
| 163 | called·for·such·calls.·The·argument·can·have·the·following·formats:</p><ul><li><p><strong><code·class="inline">{value,Func}</code></strong>·-·This·defines·a·non-local·function·handler.·The·function | 163 | called·for·such·calls.·The·argument·can·have·the·following·formats:</p><ul><li><p><strong><code·class="inline">{value,Func}</code></strong>·-·This·defines·a·non-local·function·handler.·The·function |
| 164 | may·be·called·with·two·arguments:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Func</span><span·class="p"·data-group-id=" | 164 | may·be·called·with·two·arguments:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Func</span><span·class="p"·data-group-id="9691199759-1">(</span><span·class="n">FuncSpec</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Arguments</span><span·class="p"·data-group-id="9691199759-1">)</span></code></pre><p>or·three·arguments:</p><pre><code·class="makeup·erlang[·...·truncated·by·diffoscope;·len:·324,·SHA:·2c6e65ef8cc504ef885f58932c6bdffeffb89dbb02004b2a1275b8b6642ac98d·...·]-1">)</span></code></pre><p><code·class="inline">Anno</code>·is·the·<a·href="erl_anno.html#t:anno/0"><code·class="inline">erl_anno:anno()</code></a>·of·the·node,·<code·class="inline">FuncSpec</code> |
| 165 | is·the·name·of·the·function·on·the·form·<code·class="inline">{Module,Function}</code>·or·a·fun,·and | 165 | is·the·name·of·the·function·on·the·form·<code·class="inline">{Module,Function}</code>·or·a·fun,·and |
| 166 | <code·class="inline">Arguments</code>·is·a·list·of·the·<em>evaluated</em>·arguments.·The·function·handler | 166 | <code·class="inline">Arguments</code>·is·a·list·of·the·<em>evaluated</em>·arguments.·The·function·handler |
| 167 | returns·the·value·of·the·function.·To·signal·an·error,·the·function·handler | 167 | returns·the·value·of·the·function.·To·signal·an·error,·the·function·handler |
| 168 | calls·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#exit/1"><code·class="inline">exit/1</code></a>·with·a·suitable·exit·value.</p></li><li><p><strong><code·class="inline">none</code></strong>·-·There·is·no·non-local·function·handler.</p></li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>For·calls·such·as·<code·class="inline">erlang:apply(Fun,·Args)</code>·or | 168 | calls·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#exit/1"><code·class="inline">exit/1</code></a>·with·a·suitable·exit·value.</p></li><li><p><strong><code·class="inline">none</code></strong>·-·There·is·no·non-local·function·handler.</p></li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>For·calls·such·as·<code·class="inline">erlang:apply(Fun,·Args)</code>·or |
| 169 | <code·class="inline">erlang:apply(Module,·Function,·Args)</code>,·the·call·of·the·non-local·function | 169 | <code·class="inline">erlang:apply(Module,·Function,·Args)</code>,·the·call·of·the·non-local·function |
| 170 | handler·corresponding·to·the·call·to·<code·class="inline">erlang:apply/2,3</code>·itself | 170 | handler·corresponding·to·the·call·to·<code·class="inline">erlang:apply/2,3</code>·itself |
| 171 | (<code·class="inline">Func({erlang,·apply},·[Fun,·Args])</code>·or | 171 | (<code·class="inline">Func({erlang,·apply},·[Fun,·Args])</code>·or |
| Offset 135, 15 lines modified | Offset 135, 15 lines modified | ||
| 135 | your·own·Erlang·compiler.</p><h2·id="module-error-information"·class="section-heading"> | 135 | your·own·Erlang·compiler.</p><h2·id="module-error-information"·class="section-heading"> |
| 136 | ··<a·href="#module-error-information"·class="hover-link"> | 136 | ··<a·href="#module-error-information"·class="hover-link"> |
| 137 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 137 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 138 | ··</a> | 138 | ··</a> |
| 139 | ··<span·class="text">Error·Information</span> | 139 | ··<span·class="text">Error·Information</span> |
| 140 | </h2> | 140 | </h2> |
| 141 | <p><code·class="inline">ErrorInfo</code>·is·the·standard·<code·class="inline">ErrorInfo</code>·structure·that·is·returned·from·all·I/O | 141 | <p><code·class="inline">ErrorInfo</code>·is·the·standard·<code·class="inline">ErrorInfo</code>·structure·that·is·returned·from·all·I/O |
| 142 | modules.·The·format·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 142 | modules.·The·format·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="9345821405-1">{</span><span·class="n">ErrorLine</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ErrorDescriptor</span><span·class="p"·data-group-id="93458214[·...·truncated·by·diffoscope;·len:·369,·SHA:·7363ce6f9ec458ab2daac2c7926444f052cd2538ff810a95bb5cd1b8f2932fae·...·]-1">)</span></code></pre><h2·id="module-see-also"·class="section-heading"> |
| 143 | ··<a·href="#module-see-also"·class="hover-link"> | 143 | ··<a·href="#module-see-also"·class="hover-link"> |
| 144 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 144 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 145 | ··</a> | 145 | ··</a> |
| 146 | ··<span·class="text">See·Also</span> | 146 | ··<span·class="text">See·Also</span> |
| 147 | </h2> | 147 | </h2> |
| 148 | <p><a·href="epp.html"><code·class="inline">epp</code></a>,·<a·href="erl_parse.html"><code·class="inline">erl_parse</code></a></p> | 148 | <p><a·href="epp.html"><code·class="inline">epp</code></a>,·<a·href="erl_parse.html"><code·class="inline">erl_parse</code></a></p> |
| 149 | ····</section> | 149 | ····</section> |
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| 134 | (see·the·<a·href="erl_scan.html"><code·class="inline">erl_scan</code></a>)·module.</p><h2·id="module-error-information"·class="section-heading"> | 134 | (see·the·<a·href="erl_scan.html"><code·class="inline">erl_scan</code></a>)·module.</p><h2·id="module-error-information"·class="section-heading"> |
| 135 | ··<a·href="#module-error-information"·class="hover-link"> | 135 | ··<a·href="#module-error-information"·class="hover-link"> |
| 136 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 136 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 137 | ··</a> | 137 | ··</a> |
| 138 | ··<span·class="text">Error·Information</span> | 138 | ··<span·class="text">Error·Information</span> |
| 139 | </h2> | 139 | </h2> |
| 140 | <p>ErrorInfo·is·the·standard·ErrorInfo·structure·that·is·returned·from·all·I/O·modules. | 140 | <p>ErrorInfo·is·the·standard·ErrorInfo·structure·that·is·returned·from·all·I/O·modules. |
| 141 | The·format·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 141 | The·format·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="5899271342-1">{</span><span·class="n">ErrorLine</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ErrorDescriptor</span><span·class="p"·data-group-id="58992713[·...·truncated·by·diffoscope;·len:·369,·SHA:·ed68828e32a9cf592c4b99f66fe5d3842f825ae31745a2669f886326d0798b7e·...·]-1">)</span></code></pre><h2·id="module-see-also"·class="section-heading"> |
| 142 | ··<a·href="#module-see-also"·class="hover-link"> | 142 | ··<a·href="#module-see-also"·class="hover-link"> |
| 143 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 143 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 144 | ··</a> | 144 | ··</a> |
| 145 | ··<span·class="text">See·Also</span> | 145 | ··<span·class="text">See·Also</span> |
| 146 | </h2> | 146 | </h2> |
| 147 | <p><a·href="erl_anno.html"><code·class="inline">erl_anno</code></a>,·<a·href="erl_scan.html"><code·class="inline">erl_scan</code></a>,·<a·href="io.html"><code·class="inline">io</code></a>,·section·<a·href="../../../../erts-15.2.3/doc/html/absform.html">The·Abstract·Format</a> | 147 | <p><a·href="erl_anno.html"><code·class="inline">erl_anno</code></a>,·<a·href="erl_scan.html"><code·class="inline">erl_scan</code></a>,·<a·href="io.html"><code·class="inline">io</code></a>,·section·<a·href="../../../../erts-15.2.3/doc/html/absform.html">The·Abstract·Format</a> |
| 148 | in·the·ERTS·User's·Guide.</p> | 148 | in·the·ERTS·User's·Guide.</p> |
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| 132 | tokens.</p><h2·id="module-error-information"·class="section-heading"> | 132 | tokens.</p><h2·id="module-error-information"·class="section-heading"> |
| 133 | ··<a·href="#module-error-information"·class="hover-link"> | 133 | ··<a·href="#module-error-information"·class="hover-link"> |
| 134 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 134 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 135 | ··</a> | 135 | ··</a> |
| 136 | ··<span·class="text">Error·Information</span> | 136 | ··<span·class="text">Error·Information</span> |
| 137 | </h2> | 137 | </h2> |
| 138 | <p><code·class="inline">ErrorInfo</code>·is·the·standard·<code·class="inline">ErrorInfo</code>·structure·that·is·returned·from·all·I/O | 138 | <p><code·class="inline">ErrorInfo</code>·is·the·standard·<code·class="inline">ErrorInfo</code>·structure·that·is·returned·from·all·I/O |
| 139 | modules.·The·format·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 139 | modules.·The·format·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="4213663534-1">{</span><span·class="n">ErrorLocation</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ErrorDescriptor</span><span·class="p"·data-group-id="4213[·...·truncated·by·diffoscope;·len:·373,·SHA:·beabd3fbd4401b8f82a560352706f531a55a78ba8be18278fe51064821df4217·...·]-1">)</span></code></pre><h2·id="module-notes"·class="section-heading"> |
| 140 | ··<a·href="#module-notes"·class="hover-link"> | 140 | ··<a·href="#module-notes"·class="hover-link"> |
| 141 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 141 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 142 | ··</a> | 142 | ··</a> |
| 143 | ··<span·class="text">Notes</span> | 143 | ··<span·class="text">Notes</span> |
| 144 | </h2> | 144 | </h2> |
| 145 | <p>The·continuation·of·the·first·call·to·the·re-entrant·input·functions·must·be | 145 | <p>The·continuation·of·the·first·call·to·the·re-entrant·input·functions·must·be |
| 146 | <code·class="inline">[]</code>.·For·a·complete·description·of·how·the·re-entrant·input·scheme·works,·see | 146 | <code·class="inline">[]</code>.·For·a·complete·description·of·how·the·re-entrant·input·scheme·works,·see |
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| 1239 | storage·handling·function.</p><p>Parameter·<code·class="inline">UserData</code>·is·typically·the·result·of·opening·a·low-level·structure | 1239 | storage·handling·function.</p><p>Parameter·<code·class="inline">UserData</code>·is·typically·the·result·of·opening·a·low-level·structure |
| 1240 | like·a·file·descriptor·or·an·SFTP·channel·id.·The·different·<code·class="inline">Fun</code>·clauses | 1240 | like·a·file·descriptor·or·an·SFTP·channel·id.·The·different·<code·class="inline">Fun</code>·clauses |
| 1241 | operate·on·that·very·term.</p><p>The·following·are·the·fun·clauses·parameter·lists:</p><ul><li><p><strong><code·class="inline">(write,·{UserData,DataToWrite})</code></strong>·-·Writes·term·<code·class="inline">DataToWrite</code>·using | 1241 | operate·on·that·very·term.</p><p>The·following·are·the·fun·clauses·parameter·lists:</p><ul><li><p><strong><code·class="inline">(write,·{UserData,DataToWrite})</code></strong>·-·Writes·term·<code·class="inline">DataToWrite</code>·using |
| 1242 | <code·class="inline">UserData</code>.</p></li><li><p><strong><code·class="inline">(close,·UserData)</code></strong>·-·Closes·the·access.</p></li><li><p><strong><code·class="inline">(read2,·{UserData,Size})</code></strong>·-·Reads·using·<code·class="inline">UserData</code>·but·only·<code·class="inline">Size</code>·bytes. | 1242 | <code·class="inline">UserData</code>.</p></li><li><p><strong><code·class="inline">(close,·UserData)</code></strong>·-·Closes·the·access.</p></li><li><p><strong><code·class="inline">(read2,·{UserData,Size})</code></strong>·-·Reads·using·<code·class="inline">UserData</code>·but·only·<code·class="inline">Size</code>·bytes. |
| 1243 | Notice·that·there·is·only·an·arity-2·read·function,·not·an·arity-1·function.</p></li><li><p><strong><code·class="inline">(position,{UserData,Position})</code></strong>·-·Sets·the·position·of·<code·class="inline">UserData</code>·as | 1243 | Notice·that·there·is·only·an·arity-2·read·function,·not·an·arity-1·function.</p></li><li><p><strong><code·class="inline">(position,{UserData,Position})</code></strong>·-·Sets·the·position·of·<code·class="inline">UserData</code>·as |
| 1244 | defined·for·files·in·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#position/2"><code·class="inline">file:position/2</code></a></p></li></ul><p><em>Example:</em></p><p>The·following·is·a·complete·<code·class="inline">Fun</code>·parameter·for·reading·and·writing·on·files | 1244 | defined·for·files·in·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#position/2"><code·class="inline">file:position/2</code></a></p></li></ul><p><em>Example:</em></p><p>The·following·is·a·complete·<code·class="inline">Fun</code>·parameter·for·reading·and·writing·on·files |
| 1245 | using·the·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html"><code·class="inline">file</code></a>·module:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">ExampleFun</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 1245 | using·the·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html"><code·class="inline">file</code></a>·module:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">ExampleFun</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 1246 | ···</span><span·class="nf">fun</span><span·class="p"·data-group-id="1 | 1246 | ···</span><span·class="nf">fun</span><span·class="p"·data-group-id="7186908807-1">(</span><span·class="ss">write</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7186908807-2">{</span><span·class="n">Fd</span><span·class="p">,</span><span·class="n">Data</span><span·class="p"·data-group-i[·...·truncated·by·diffoscope;·len:·430,·SHA:·00dd3067f8e56c7062a9fec00052e903cf5952c0084ebd20469edcf184e51c70·...·]-3">)</span><span·class="p">;</span><span·class="w"> |
| 1247 | ······</span><span·class="p"·data-group-id="1 | 1247 | ······</span><span·class="p"·data-group-id="7186908807-4">(</span><span·class="ss">position</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7186908807-5">{</span><span·class="n">Fd</span><span·class="p">,</span><span·class="n">Pos</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·433,·SHA:·5729ff4ec9c987c4cafc449d6092762b732db4891a63d5bca95b5dee16cee00e·...·]-6">)</span><span·class="p">;</span><span·class="w"> |
| 1248 | ······</span><span·class="p"·data-group-id="1 | 1248 | ······</span><span·class="p"·data-group-id="7186908807-7">(</span><span·class="ss">read2</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7186908807-8">{</span><span·class="n">Fd</span><span·class="p">,</span><span·class="n">Size</span><span·class="p"·data-group-i[·...·truncated·by·diffoscope;·len:·428,·SHA:·151ee75f8d75e51ad693853417e926d169c9546f5b52263b84c036711559601b·...·]-9">)</span><span·class="p">;</span><span·class="w"> |
| 1249 | ······</span><span·class="p"·data-group-id="1 | 1249 | ······</span><span·class="p"·data-group-id="7186908807-10">(</span><span·class="ss">close</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Fd</span><span·class="p"·data-group-id="7186908807-10">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·200,·SHA:·2b59aa8876ba67948cb0245310b77731aa7b1c04f543502101fb1a2e6ca83e8e·...·]-11">)</span><span·class="w"> |
| 1250 | ···</span><span·class="k">end</span></code></pre><p>Here·<code·class="inline">Fd</code>·was·specified·to·function·<a·href="#init/3"><code·class="inline">init/3</code></a>·as:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="5498452632-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">Fd</span><span·class="p"·data-group-id="5498452632-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">open</span><span·class="p"·data-group-id="5498452632-2">(</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="5498452632-2">)</span><span·class="p">.</span><span·class="w"> | ||
| 1251 | </span><span·class=" | 1250 | ···</span><span·class="k">end</span></code></pre><p>Here·<code·class="inline">Fd</code>·was·specified·to·function·<a·href="#init/3"><code·class="inline">init/3</code></a>·as:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·573,·SHA:·680c03615e314e3ae225806480e4d98c5c4e76e33950b26b82d9e8ad4661325e·...·]</span><span·class="w"> |
| 1251 | </span><span·class="p"·data-group-id="7941595398-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">TarDesc</span><span·class="p"·data-group-id="7941595398-3">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erl_tar</span><span·class="p">:</span><span·class="nf">init</span><span·class="p"·data-group-id="7941595398-4">(</span><span·class="n">Fd</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7941595398-5">[</span><span·class="ss">write</span><span·class="p"·data-group-id="7941595398-5">]</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ExampleFun</span><span·class="p"·data-group-id="7941595398-4">)</span><span·class="p">,</span></code></pre><p><code·class="inline">TarDesc</code>·is·then·used:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">erl_tar</span><span·class="p">:</span><span·class="nf">add</span><span·class="p"·data-group-id="9180583045-1">(</span><span·class="n">TarDesc</span><span·class="p">,</span><span·class="w">·</span><span·class="n">SomeValueIwantToAdd</span><span·class="p">,</span><span·class="w">·</span><span·class="n">FileNameInTarFile</span><span·class="p"·data-group-id="9180583045-1">)</span><span·class="p">,</span><span·class="w"> | ||
| 1252 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">,</span><span·class="w"> | 1252 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">,</span><span·class="w"> |
| 1253 | </span><span·class="nc">erl_tar</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id=" | 1253 | </span><span·class="nc">erl_tar</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id="9180583045-2">(</span><span·class="n">TarDesc</span><span·class="p"·data-group-id="9180583045-2">)</span></code></pre><p>When·the·<code·class="inline">erl_tar</code>·core·wants·to,·for·example,·write·a·piece·of·<code·class="inline">Data</code>,·it·would |
| 1254 | call·<code·class="inline">ExampleFun(write,·{UserData,Data})</code>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>This·example·with·the·<code·class="inline">file</code>·module·operations·is·not·necessary·to·use | 1254 | call·<code·class="inline">ExampleFun(write,·{UserData,Data})</code>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>This·example·with·the·<code·class="inline">file</code>·module·operations·is·not·necessary·to·use |
| 1255 | directly,·as·that·is·what·function·<a·href="#open/2"><code·class="inline">open/2</code></a>·in·principle·does.</p></section><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>The·<code·class="inline">TarDescriptor</code>·term·is·not·a·file·descriptor.·You·are·advised·not·to·rely | 1255 | directly,·as·that·is·what·function·<a·href="#open/2"><code·class="inline">open/2</code></a>·in·principle·does.</p></section><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>The·<code·class="inline">TarDescriptor</code>·term·is·not·a·file·descriptor.·You·are·advised·not·to·rely |
| 1256 | on·the·specific·contents·of·this·term,·as·it·can·change·in·future·Erlang/OTP | 1256 | on·the·specific·contents·of·this·term,·as·it·can·change·in·future·Erlang/OTP |
| 1257 | releases·when·more·features·are·added·to·this·module.</p></section> | 1257 | releases·when·more·features·are·added·to·this·module.</p></section> |
| 1258 | ··</section> | 1258 | ··</section> |
| 1259 | </section> | 1259 | </section> |
| 1260 | <section·class="detail"·id="open/2"> | 1260 | <section·class="detail"·id="open/2"> |
| Offset 502, 75 lines modified | Offset 502, 75 lines modified | ||
| 502 | <code·class="inline">shebang</code>·defaults·to·<code·class="inline">"/usr/bin/env·escript"</code>.·The·<code·class="inline">comment</code>·defaults·to | 502 | <code·class="inline">shebang</code>·defaults·to·<code·class="inline">"/usr/bin/env·escript"</code>.·The·<code·class="inline">comment</code>·defaults·to |
| 503 | <code·class="inline">"This·is·an·-*-·erlang·-*-·file"</code>.·The·created·escript·can·either·be·returned | 503 | <code·class="inline">"This·is·an·-*-·erlang·-*-·file"</code>.·The·created·escript·can·either·be·returned |
| 504 | as·a·binary·or·written·to·file.</p><p>As·an·example·of·how·the·function·can·be·used,·we·create·an·interpreted·escript | 504 | as·a·binary·or·written·to·file.</p><p>As·an·example·of·how·the·function·can·be·used,·we·create·an·interpreted·escript |
| 505 | that·uses·<code·class="inline">emu_args</code>·to·set·some·emulator·flag.·In·this·case,·it·happens·to·set | 505 | that·uses·<code·class="inline">emu_args</code>·to·set·some·emulator·flag.·In·this·case,·it·happens·to·set |
| 506 | number·of·schedulers·with·<code·class="inline">+S3</code>.·We·also·extract·the·different·sections·from·the | 506 | number·of·schedulers·with·<code·class="inline">+S3</code>.·We·also·extract·the·different·sections·from·the |
| 507 | newly·created·script:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">Source</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"%%·Demo\nmain(_Args)·->\n····io:format(\"</span><span·class="si">~p</span><span·class="s">\",[erlang:system_info(schedulers)]).\n"</span><span·class="p">.</span><span·class="w"> | 507 | newly·created·script:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">Source</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"%%·Demo\nmain(_Args)·->\n····io:format(\"</span><span·class="si">~p</span><span·class="s">\",[erlang:system_info(schedulers)]).\n"</span><span·class="p">.</span><span·class="w"> |
| 508 | </span><span·class="s">"%%·Demo\nmain(_Args)·->\n····io:format(erlang:system_info(schedulers)).\n"</span><span·class="gp·unselectable"> | 508 | </span><span·class="s">"%%·Demo\nmain(_Args)·->\n····io:format(erlang:system_info(schedulers)).\n"</span><span·class="gp·unselectable"> |
| 509 | >·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 509 | >·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="5186034661-1">(</span><span·class="s">"</span><span·class="si">~s</span><span·class="s">\n"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5186034661-2">[</span><span·class="n">Source</span><span·class="p"·da[·...·truncated·by·diffoscope;·len:·76,·SHA:·f9c77dc129636b442e3694ecb7448566b84318c19b95da9582617d6cf139f701·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 510 | </span><span·class="c1">%%·Demo</span><span·class="w"> | 510 | </span><span·class="c1">%%·Demo</span><span·class="w"> |
| 511 | </span><span·class="nf">main</span><span·class="p"·data-group-id=" | 511 | </span><span·class="nf">main</span><span·class="p"·data-group-id="5186034661-3">(</span><span·class="p">_</span><span·class="n">Args</span><span·class="p"·data-group-id="5186034661-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 512 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 512 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="5186034661-4">(</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">system_info</span><span·class="p"·data-group-id="5186034661-5">(</span><span·class="ss">schedulers</span><span·class="p"·data-group-id="5186034661-5">)</span><span[·...·truncated·by·diffoscope;·len:·36,·SHA:·96f121653507098d55b200e903d0670fab835e26a772097a646a93b26af688ab·...·]-4">)</span><span·class="p">.</span><span·class="w"> |
| 513 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 513 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 514 | >·</span><span·class="p"·data-group-id=" | 514 | >·</span><span·class="p"·data-group-id="5186034661-6">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Bin</span><span·class="p"·data-group-id="5186034661-6">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·cla[·...·truncated·by·diffoscope;·len:·630,·SHA:·ec5bb02fcbaf989cb0b7b261a5acf6f1aafc75621c1ecd3654ee0b64dca21847·...·]-9">}</span><span·class="p">,</span><span·class="w"> |
| 515 | ······································</span><span·class="p"·data-group-id="6865194308-10">{</span><span·class="ss">source</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">list_to_binary</span><span·class="p"·data-group-id="6865194308-11">(</span><span·class="n">Source</span><span·class="p"·data-group-id="6865194308-11">)</span><span·class="p"·data-group-id="6865194308-10">}</span><span·class="p"·data-group-id="6865194308-8">]</span><span·class="p"·data-group-id="6865194308-7">)</span><span·class="p">.</span><span·class="w"> | ||
| 516 | </span><span·class="p"·data-group-id=" | 515 | ······································</span><span·class="p"·data-group-id="5186034661-10">{</span><span·class="ss">source</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">list_to_binary</span><span·class="p"·data-group-id="5186034661[·...·truncated·by·diffoscope;·len:·294,·SHA:·d4ecead916e41d133630a87fa343498f658b1365871cbf0afddc2597e95cc0a5·...·]"> |
| 516 | </span><span·class="p"·data-group-id="5186034661-12">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="5186034661-13"><<</span><span·class="s">"#!/usr/bin/env·escript\n%%·This·is·an·-*-·erlang·-*-·file\n%%!+S3"</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="5186034661-13">>></span><span·class="p"·data-group-id="5186034661-12">}</span><span·class="gp·unselectable"> | ||
| 517 | >·</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">write_file</span><span·class="p"·data-group-id=" | 517 | >·</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">write_file</span><span·class="p"·data-group-id="5186034661-14">(</span><span·class="s">"demo.escript"</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Bin</span><span·class="p"·data-group-id="5186034661-14">)</span><span·class="p">.</span><span·class="w"> |
| 518 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 518 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 519 | >·</span><span·class="nc">os</span><span·class="p">:</span><span·class="nf">cmd</span><span·class="p"·data-group-id=" | 519 | >·</span><span·class="nc">os</span><span·class="p">:</span><span·class="nf">cmd</span><span·class="p"·data-group-id="5186034661-15">(</span><span·class="s">"escript·demo.escript"</span><span·class="p"·data-group-id="5186034661-15">)</span><span·class="p">.</span><span·class="w"> |
| 520 | </span><span·class="s">"3"</span><span·class="gp·unselectable"> | 520 | </span><span·class="s">"3"</span><span·class="gp·unselectable"> |
| 521 | >·</span><span·class="nc">escript</span><span·class="p">:</span><span·class="nf">extract</span><span·class="p"·data-group-id="6865194308-16">(</span><span·class="s">"demo.escript"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6865194308-17">[</span><span·class="p"·data-group-id="6865194308-17">]</span><span·class="p"·data-group-id="6865194308-16">)</span><span·class="p">.</span><span·class="w"> | ||
| 522 | </span><span·class="p"·data-group-id="6865194308-18">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="6865194308-19">[</span><span·class="p"·data-group-id="6865194308-20">{</span><span·class="ss">shebang</span><span·class="p">,</span><span·class="ss">default</span><span·class="p"·data-group-id="6865194308-20">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6865194308-21">{</span><span·class="ss">comment</span><span·class="p">,</span><span·class="ss">default</span><span·class="p"·data-group-id="6865194308-21">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6865194308-22">{</span><span·class="ss">emu_args</span><span·class="p">,</span><span·class="s">"+S3"</span><span·class="p"·data-group-id="6865194308-22">}</span><span·class="p">,</span><span·class="w"> | ||
| 523 | 521 | >·</span><span·class="nc">escript</span><span·class="p">:</span><span·class="nf">extract</span><span·class="p"·data-group-id="5186034661-16">(</span><span·class="s">"demo.escript"</span><span·class="p">,</span><span·class="w">·</span><span·cla[·...·truncated·by·diffoscope;·len:·170,·SHA:·281d1d2f30c0904e3756c8109473195965ec4eec9cdf4073ab0c5fc0bd5e529c·...·]</span><span·class="w"> | |
| 522 | </span><span·class="p"·data-group-id="5186034661-18">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="5186034661-19">[</span><span·class="p"·data-group-id="5186034661-20">{</span><span·class="ss">shebang</span><span·class="p">,</span><span·class="ss">default</span><span·class="p"·data-group-id="5186034661-20">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5186034661-21">{</span><span·class="ss">comment</span><span·class="p">,</span><span·class="ss">default</span><span·class="p"·data-group-id="5186034661-21">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5186034661-22">{</span><span·class="ss">emu_args</span><span·class="p">,</span><span·class="s">"+S3"</span><span·class="p"·data-group-id="5186034661-22">}</span><span·class="p">,</span><span·class="w"> | ||
| 523 | ·····</span><span·class="p"·data-group-id="5186034661-23">{</span><span·class="ss">source</span><span·class="p">,</span><span·class="p"·data-group-id="5186034661-24"><<</span><span·class="s">"%%·Demo\nmain(_Args)·->\n····io:format(erlang:system_info(schedu"</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="5186034661-24">>></span><span·class="p"·data-group-id="5186034661-23">}</span><span·class="p"·data-group-id="5186034661-19">]</span><span·class="p"·data-group-id="5186034661-18">}</span></code></pre><p>An·escript·without·header·can·be·created·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">write_file</span><span·class="p"·data-group-id="9488177360-1">(</span><span·class="s">"demo.erl"</span><span·class="p">,</span><span·class="w"> | ||
| 524 | ··················</span><span·class="p"·data-group-id=" | 524 | ··················</span><span·class="p"·data-group-id="9488177360-2">[</span><span·class="s">"%%·demo.erl\n-module(demo).\n-export([main/1]).\n\n"</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Source</span><span·class="p"·data-group-id="9488177360-2">]</span><span·class="p"·da[·...·truncated·by·diffoscope;·len:·23,·SHA:·50dd3a399493cb0e5fbc243939dd4f0359fe2a0d8b0d880c0c99a42f3f8b9bb6·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 525 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 525 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 526 | >·</span><span·class="p"·data-group-id=" | 526 | >·</span><span·class="p"·data-group-id="9488177360-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·class="n">BeamCode</span><span·class="p"·data-group-id="9488177360-3">}</span><spa[·...·truncated·by·diffoscope;·len:·554,·SHA:·2842b4c1954619793e654fcbd216732430a2ad3b656025aaccb229c4a5779056·...·]-4">)</span><span·class="p">.</span><span·class="w"> |
| 527 | </span><span·class="p"·data-group-id=" | 527 | </span><span·class="p"·data-group-id="9488177360-6">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="ss">demo</span><span·class="p">,</span><span·class="w"> |
| 528 | ····</span><span·class="p"·data-group-id=" | 528 | ····</span><span·class="p"·data-group-id="9488177360-7"><<</span><span·class="mi">70</span><span·class="p">,</span><span·class="mi">79</span><span·class="p">,</span><span·class="mi">82</span><span·class="p">,</span><span·class="mi">49</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">208</span><span·class="p">,</span><span·class="mi">66</span><span·class="p">,</span><span·class="mi">69</span><span·class="p">,</span><span·class="mi">65</span><span·class="p">,</span><span·class="mi">77</span><span·class="p">,</span><span·class="mi">65</span><span·class="p">,</span><span·class="mi">116</span><span·class="p">,</span><span·class="mi">111</span><span·class="p">,</span><span·class="mi">109</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="w"> |
| 529 | ······</span><span·class="mi">79</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">9</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">100</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id=" | 529 | ······</span><span·class="mi">79</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">9</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">100</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="9488177360-7">>></span><span·class="p"·data-group-id="9488177360-6">}</span><span·class="gp·unselectable"> |
| 530 | >·</span><span·class="nc">escript</span><span·class="p">:</span><span·class="nf">create</span><span·class="p"·data-group-id=" | 530 | >·</span><span·class="nc">escript</span><span·class="p">:</span><span·class="nf">create</span><span·class="p"·data-group-id="9488177360-8">(</span><span·class="s">"demo.beam"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9488177360-9">[</span><span·class="p"·data-group-id="9488177360-10">{</span><span·class="ss">beam</span><span·c[·...·truncated·by·diffoscope;·len:·220,·SHA:·962e60a0021d5d4d4b786af2a121c2fc5ae6c54d3724221fa85114db05227b96·...·]-8">)</span><span·class="p">.</span><span·class="w"> |
| 531 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 531 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 532 | >·</span><span·class="nc">escript</span><span·class="p">:</span><span·class="nf">extract</span><span·class="p"·data-group-id="2935591598-11">(</span><span·class="s">"demo.beam"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2935591598-12">[</span><span·class="p"·data-group-id="2935591598-12">]</span><span·class="p"·data-group-id="2935591598-11">)</span><span·class="p">.</span><span·class="w"> | ||
| 533 | </span><span·class= | 532 | >·</span><span·class="nc">escript</span><span·class="p">:</span><span·class="nf">extract</span><span·class="p"·data-group-id="9488177360-11">(</span><span·class="s">"demo.beam"</span><span·class="p">,</span><span·class="w">·</span><span·class=[·...·truncated·by·diffoscope;·len:·167,·SHA:·bbb663a00dc61014d38bfd32a7684a14252b97e0678d8538db31fc08f5f0c8a7·...·]</span><span·class="w"> |
| 533 | </span><span·class="p"·data-group-id="9488177360-13">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="9488177360-14">[</span><span·class="p"·data-group-id="9488177360-15">{</span><span·class="ss">shebang</span><span·class="p">,</span><span·class="ss">undefined</span><span·class="p"·data-group-id="9488177360-15">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9488177360-16">{</span><span·class="ss">comment</span><span·class="p">,</span><span·class="ss">undefined</span><span·class="p"·data-group-id="9488177360-16">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9488177360-17">{</span><span·class="ss">emu_args</span><span·class="p">,</span><span·class="ss">undefined</span><span·class="p"·data-group-id="9488177360-17">}</span><span·class="p">,</span><span·class="w"> | ||
| 534 | ·····</span><span·class="p"·data-group-id=" | 534 | ·····</span><span·class="p"·data-group-id="9488177360-18">{</span><span·class="ss">beam</span><span·class="p">,</span><span·class="p"·data-group-id="9488177360-19"><<</span><span·class="mi">70</span><span·class="p">,</span><span·class="mi">79</span><span·class="p">,</span><span·class="mi">82</span><span·class="p">,</span><span·class="mi">49</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">68</span><span·class="p">,</span><span·class="mi">66</span><span·class="p">,</span><span·class="mi">69</span><span·class="p">,</span><span·class="mi">65</span><span·class="p">,</span><span·class="mi">77</span><span·class="p">,</span><span·class="mi">65</span><span·class="p">,</span><span·class="mi">116</span><span·class="p">,</span><span·class="w"> |
| 535 | ·············</span><span·class="mi">111</span><span·class="p">,</span><span·class="mi">109</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">83</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">9</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id=" | 535 | ·············</span><span·class="mi">111</span><span·class="p">,</span><span·class="mi">109</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">83</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">9</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="9488177360-19">>></span><span·class="p"·data-group-id="9488177360-18">}</span><span·class="p"·data-group-id="9488177360-14">]</span><span·class="p"·data-group-id="9488177360-13">}</span><span·class="gp·unselectable"> |
| 536 | >·</span><span·class="nc">os</span><span·class="p">:</span><span·class="nf">cmd</span><span·class="p"·data-group-id=" | 536 | >·</span><span·class="nc">os</span><span·class="p">:</span><span·class="nf">cmd</span><span·class="p"·data-group-id="9488177360-20">(</span><span·class="s">"escript·demo.beam"</span><span·class="p"·data-group-id="9488177360-20">)</span><span·class="p">.</span><span·class="w"> |
| 537 | </span><span·class="s">"true"</span></code></pre><p>Here·we·create·an·archive·script·containing·both·Erlang·code·and·Beam·code,·then | 537 | </span><span·class="s">"true"</span></code></pre><p>Here·we·create·an·archive·script·containing·both·Erlang·code·and·Beam·code,·then |
| 538 | we·iterate·over·all·files·in·the·archive·and·collect·their·contents·and·some | 538 | we·iterate·over·all·files·in·the·archive·and·collect·their·contents·and·some |
| 539 | information·about·them:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="p"·data-group-id="0635475092-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">SourceCode</span><span·class="p"·data-group-id="0635475092-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">read_file</span><span·class="p"·data-group-id="0635475092-2">(</span><span·class="s">"demo.erl"</span><span·class="p"·data-group-id="0635475092-2">)</span><span·class="p">.</span><span·class="w"> | ||
| 540 | 539 | information·about·them:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="p"·data-group-id="1541084910-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class=[·...·truncated·by·diffoscope;·len:·418,·SHA:·03aa86c75e37b7ca42760a15b8967ddd541bac0549ff52de5428b780b13420b1·...·]"> | |
| 540 | </span><span·class="p"·data-group-id="1541084910-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="1541084910-4"><<</span><span·class="s">"%%·demo.erl\n-module(demo).\n-export([main/1]).\n\n%%·Demo\nmain(_Arg"</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="1541084910-4">>></span><span·class="p"·data-group-id="1541084910-3">}</span><span·class="gp·unselectable"> | ||
| 541 | >·</span><span·class="nc">escript</span><span·class="p">:</span><span·class="nf">create</span><span·class="p"·data-group-id=" | 541 | >·</span><span·class="nc">escript</span><span·class="p">:</span><span·class="nf">create</span><span·class="p"·data-group-id="1541084910-5">(</span><span·class="s">"demo.escript"</span><span·class="p">,</span><span·class="w"> |
| 542 | ·················</span><span·class="p"·data-group-id=" | 542 | ·················</span><span·class="p"·data-group-id="1541084910-6">[</span><span·class="ss">shebang</span><span·class="p">,</span><span·class="w"> |
| 543 | ··················</span><span·class="p"·data-group-id=" | 543 | ··················</span><span·class="p"·data-group-id="1541084910-7">{</span><span·class="ss">archive</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1541084910-8">[</span><span·class="p"·data-group-id="1541084910-9">{</span><span·class="s">"demo.erl"</span><span·[·...·truncated·by·diffoscope;·len:·116,·SHA:·cc778b014058b56469e8a67145193f96bfac959c709febed8cf7efe4677c9346·...·]-9">}</span><span·class="p">,</span><span·class="w"> |
| 544 | ·····························</span><span·class="p"·data-group-id=" | 544 | ·····························</span><span·class="p"·data-group-id="1541084910-10">{</span><span·class="s">"demo.beam"</span><span·class="p">,</span><span·class="w">·</span><span·class="n">BeamCode</span><span·class="p"·data-group-id="1541084910-10">}</span><span·class="p"·data-group-id="1541084910-8">]</span><sp[·...·truncated·by·diffoscope;·len:·300,·SHA:·d013afdbaaf7e58add8c7a520947a169f6fa8842f13a0c01f035df7f0395daeb·...·]-5">)</span><span·class="p">.</span><span·class="w"> |
| 545 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 545 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 546 | >·</span><span·class="p"·data-group-id=" | 546 | >·</span><span·class="p"·data-group-id="1541084910-12">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1541084910-13">[</span><span·class="p"·data-group-id="1541084910-14">{</span><span·class="ss">shebang</span><span·class="p">,</s[·...·truncated·by·diffoscope;·len:·565,·SHA:·e83084f4154800b50b90c969dd8e7ac83b22a75e8bd981a4328b75fe32464b2a·...·]-16">}</span><span·class="p">,</span><span·class="w"> |
| 547 | ·····</span><span·class="p"·data-group-id=" | 547 | ·····</span><span·class="p"·data-group-id="1541084910-17">{</span><span·class="ss">archive</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ArchiveBin</span><span·class="p"·data-group-id="1541084910-17">}</span><span·class="p"·data-group-id="1541084910-13">]</span><span·class="[·...·truncated·by·diffoscope;·len:·497,·SHA:·0d2b45b39edce1bebcd4294f322fc67a0ddf77547cb40634434157bd62d29e5d·...·]-18">)</span><span·class="p">.</span><span·class="w"> |
| 548 | </span><span·class="p"·data-group-id=" | 548 | </span><span·class="p"·data-group-id="1541084910-20">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="1541084910-21">[</span><span·class="p"·data-group-id="1541084910-22">{</span><span·class="ss">shebang</span><span·class="p">,</span><span·class="ss">def[·...·truncated·by·diffoscope;·len:·541,·SHA:·33459d564902aaee5ffc61bb678a21426d9bf7e3251c0881c7693d1d15f2041d·...·]-24">}</span><span·class="p">,</span><span·class="w"> |
| 549 | ·····</span><span·class="p"·data-group-id=" | 549 | ·····</span><span·class="p"·data-group-id="1541084910-25">{</span><span·class="p"·data-group-id="1541084910-26">{</span><span·class="ss">archive</span><span·class="p">,</span><span·class="p"·data-group-id="1541084910-27"><<</span><span·class="mi">80</span><span·class="p">,</span><span·class="mi">75</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">20</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">8</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">118</span><span·class="p">,</span><span·class="mi">7</span><span·class="p">,</span><span·class="mi">98</span><span·class="p">,</span><span·class="mi">60</span><span·class="p">,</span><span·class="mi">105</span><span·class="p">,</span><span·class="w"> |
| 550 | ················</span><span·class="mi">152</span><span·class="p">,</span><span·class="mi">61</span><span·class="p">,</span><span·class="mi">93</span><span·class="p">,</span><span·class="mi">107</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">118</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id=" | 550 | ················</span><span·class="mi">152</span><span·class="p">,</span><span·class="mi">61</span><span·class="p">,</span><span·class="mi">93</span><span·class="p">,</span><span·class="mi">107</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">118</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="1541084910-27">>></span><span·class="p"·data-group-id="1541084910-26">}</span><span·class="p">]</span><span·class="p"·data-group-id="1541084910-25">}</span><span·class="gp·unselectable"> |
| 551 | >·</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">write_file</span><span·class="p"·data-group-id=" | 551 | >·</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">write_file</span><span·class="p"·data-group-id="1541084910-28">(</span><span·class="s">"demo.zip"</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ArchiveBin</span><span·class="p"·data-group-id="1541084910-28">)</span><span·class="p">.</span><span·class="w"> |
| 552 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 552 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 553 | >·</span><span·class="nc">zip</span><span·class="p">:</span><span·class="nf">foldl</span><span·class="p"·data-group-id=" | 553 | >·</span><span·class="nc">zip</span><span·class="p">:</span><span·class="nf">foldl</span><span·class="p"·data-group-id="1541084910-29">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="1541084910-30">(</span><span·class="n">N</span><span·class="p">,</span><span·class="w">·</span><span·class="n">I</span><span·class="p">,</span><span·class="w">·</span><span·cl[·...·truncated·by·diffoscope;·len:·1252,·SHA:·afb68b340450dd8712352b44beab4370526f5f99ae91a73ba1265dd7cdf20048·...·]-29">)</span><span·class="p">.</span><span·class="w"> |
| 554 | </span><span·class="p"·data-group-id=" | 554 | </span><span·class="p"·data-group-id="1541084910-36">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="1541084910-37">[</span><span·class="p"·data-group-id="1541084910-38">{</span><span·class="s">"demo.beam"</span><span·class="p">,</span><span·class="w"> |
| 555 | ······</span><span·class="p"·data-group-id=" | 555 | ······</span><span·class="p"·data-group-id="1541084910-39">{</span><span·class="ss">file_info</span><span·class="p">,</span><span·class="mi">748</span><span·class="p">,</span><span·class="ss">regular</span><span·class="p">,</span><span·class="ss">read_write</span><span·class="p">,</span><span·class="w"> |
| 556 | ·················</span><span·class="p"·data-group-id=" | 556 | ·················</span><span·class="p"·data-group-id="1541084910-40">{</span><span·class="p"·data-group-id="1541084910-41">{</span><span·class="mi">2010</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="1541084910-41">}</span[·...·truncated·by·diffoscope;·len:·299,·SHA:·abc3f16f4f2adfe9009a1fec9ba9104da2e34b685129eff3dfb1fe8aa720e4b9·...·]-40">}</span><span·class="p">,</span><span·class="w"> |
| 557 | ·················</span><span·class="p"·data-group-id=" | 557 | ·················</span><span·class="p"·data-group-id="1541084910-43">{</span><span·class="p"·data-group-id="1541084910-44">{</span><span·class="mi">2010</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="1541084910-44">}</span[·...·truncated·by·diffoscope;·len:·299,·SHA:·95398dcebced3ab86c7a04aaa700ea1ebfbc4d79f1a27bef39e4ae364089caa5·...·]-43">}</span><span·class="p">,</span><span·class="w"> |
| 558 | ·················</span><span·class="p"·data-group-id=" | 558 | ·················</span><span·class="p"·data-group-id="1541084910-46">{</span><span·class="p"·data-group-id="1541084910-47">{</span><span·class="mi">2010</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="1541084910-47">}</span[·...·truncated·by·diffoscope;·len:·299,·SHA:·3e10a6e385fe17ea3555e2bb120a886e8e6a0c1501d1b0a4c7b377db23e8c910·...·]-46">}</span><span·class="p">,</span><span·class="w"> |
| 559 | ·················</span><span·class="mi">54</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p"·data-group-id=" | 559 | ·················</span><span·class="mi">54</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p"·data-group-id="1541084910-39">}</span><span·class="p">,</span><span·class="w"> |
| 560 | ······</span><span·class="p"·data-group-id=" | 560 | ······</span><span·class="p"·data-group-id="1541084910-49"><<</span><span·class="mi">70</span><span·class="p">,</span><span·class="mi">79</span><span·class="p">,</span><span·class="mi">82</span><span·class="p">,</span><span·class="mi">49</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">228</span><span·class="p">,</span><span·class="mi">66</span><span·class="p">,</span><span·class="mi">69</span><span·class="p">,</span><span·class="mi">65</span><span·class="p">,</span><span·class="mi">77</span><span·class="p">,</span><span·class="mi">65</span><span·class="p">,</span><span·class="mi">116</span><span·class="p">,</span><span·class="mi">111</span><span·class="p">,</span><span·class="mi">109</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="w"> |
| 561 | ········</span><span·class="mi">83</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id=" | 561 | ········</span><span·class="mi">83</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="1541084910-49">>></span><span·class="p"·data-group-id="1541084910-38">}</span><span·class="p">,</span><span·class="w"> |
| 562 | ·····</span><span·class="p"·data-group-id=" | 562 | ·····</span><span·class="p"·data-group-id="1541084910-50">{</span><span·class="s">"demo.erl"</span><span·class="p">,</span><span·class="w"> |
| 563 | ······</span><span·class="p"·data-group-id=" | 563 | ······</span><span·class="p"·data-group-id="1541084910-51">{</span><span·class="ss">file_info</span><span·class="p">,</span><span·class="mi">118</span><span·class="p">,</span><span·class="ss">regular</span><span·class="p">,</span><span·class="ss">read_write</span><span·class="p">,</span><span·class="w"> |
| 564 | ·················</span><span·class="p"·data-group-id=" | 564 | ·················</span><span·class="p"·data-group-id="1541084910-52">{</span><span·class="p"·data-group-id="1541084910-53">{</span><span·class="mi">2010</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="1541084910-53">}</span[·...·truncated·by·diffoscope;·len:·299,·SHA:·efbc294dd2475e1df91092c5447510e859816ca4bfc73176b11d85193ae393a0·...·]-52">}</span><span·class="p">,</span><span·class="w"> |
| 565 | ·················</span><span·class="p"·data-group-id=" | 565 | ·················</span><span·class="p"·data-group-id="1541084910-55">{</span><span·class="p"·data-group-id="1541084910-56">{</span><span·class="mi">2010</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="1541084910-56">}</span[·...·truncated·by·diffoscope;·len:·299,·SHA:·2187bdac77352ecdd2d670e01095158fa86f125b85cbe38239618e01503404a4·...·]-55">}</span><span·class="p">,</span><span·class="w"> |
| 566 | ·················</span><span·class="p"·data-group-id=" | 566 | ·················</span><span·class="p"·data-group-id="1541084910-58">{</span><span·class="p"·data-group-id="1541084910-59">{</span><span·class="mi">2010</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="1541084910-59">}</span[·...·truncated·by·diffoscope;·len:·299,·SHA:·938387687147ceef6695d7bc2dd991852a1dfe1f9733f50dd42b3ccd92c9f533·...·]-58">}</span><span·class="p">,</span><span·class="w"> |
| 567 | ·················</span><span·class="mi">54</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p"·data-group-id=" | 567 | ·················</span><span·class="mi">54</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p"·data-group-id="1541084910-51">}</span><span·class="p">,</span><span·class="w"> |
| 568 | ······</span><span·class="p"·data-group-id=" | 568 | ······</span><span·class="p"·data-group-id="1541084910-61"><<</span><span·class="s">"%%·demo.erl\n-module(demo).\n-export([main/1]).\n\n%%·Demo\nmain(_Arg"</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="1541084910-61">>[·...·truncated·by·diffoscope;·len:·160,·SHA:·71f686e0c912fa7a488dd41941a633d444a205034ee1d2bf92a430d1a1306dfa·...·]-36">}</span></code></pre> |
| 569 | ··</section> | 569 | ··</section> |
| 570 | </section> | 570 | </section> |
| 571 | <section·class="detail"·id="extract/2"> | 571 | <section·class="detail"·id="extract/2"> |
| 572 | ··<div·class="detail-header"> | 572 | ··<div·class="detail-header"> |
| 573 | ····<a·href="#extract/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 573 | ····<a·href="#extract/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 574 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 574 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 593, 24 lines modified | Offset 593, 24 lines modified | ||
| 593 | ······</div> | 593 | ······</div> |
| 594 | <p>Parses·an·escript·and·extracts·its·sections.·This·is·the·reverse·of·<a·href="#create/2"><code·class="inline">create/2</code></a>.</p><p>All·sections·are·returned·even·if·they·do·not·exist·in·the·escript.·If·a | 594 | <p>Parses·an·escript·and·extracts·its·sections.·This·is·the·reverse·of·<a·href="#create/2"><code·class="inline">create/2</code></a>.</p><p>All·sections·are·returned·even·if·they·do·not·exist·in·the·escript.·If·a |
| 595 | particular·section·happens·to·have·the·same·value·as·the·default·value,·the | 595 | particular·section·happens·to·have·the·same·value·as·the·default·value,·the |
| 596 | extracted·value·is·set·to·the·atom·<code·class="inline">default</code>.·If·a·section·is·missing,·the | 596 | extracted·value·is·set·to·the·atom·<code·class="inline">default</code>.·If·a·section·is·missing,·the |
| 597 | extracted·value·is·set·to·the·atom·<code·class="inline">undefined</code>.</p><p>Option·<code·class="inline">compile_source</code>·only·affects·the·result·if·the·escript·contains·<code·class="inline">source</code> | 597 | extracted·value·is·set·to·the·atom·<code·class="inline">undefined</code>.</p><p>Option·<code·class="inline">compile_source</code>·only·affects·the·result·if·the·escript·contains·<code·class="inline">source</code> |
| 598 | code.·In·this·case·the·Erlang·code·is·automatically·compiled·and | 598 | code.·In·this·case·the·Erlang·code·is·automatically·compiled·and |
| 599 | <code·class="inline">{source,·BeamCode}</code>·is·returned·instead·of·<code·class="inline">{source,·SourceCode}</code>.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">escript</span><span·class="p">:</span><span·class="nf">create</span><span·class="p"·data-group-id=" | 599 | <code·class="inline">{source,·BeamCode}</code>·is·returned·instead·of·<code·class="inline">{source,·SourceCode}</code>.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">escript</span><span·class="p">:</span><span·class="nf">create</span><span·class="p"·data-group-id="2571238601-1">(</span><span·class="s">"demo.escript"</span><span·class="p">,</span><span·class="w"> |
| 600 | ·················</span><span·class="p"·data-group-id=" | 600 | ·················</span><span·class="p"·data-group-id="2571238601-2">[</span><span·class="ss">shebang</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2571238601-3">{</span><span·class="ss">archive</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·248,·SHA:·bbdc788c360cdac423a836670f22d03b6bced8c5b5e5fe42b0889f590804cdcf·...·]-5">}</span><span·class="p">,</span><span·class="w"> |
| 601 | ······································</span><span·class="p"·data-group-id=" | 601 | ······································</span><span·class="p"·data-group-id="2571238601-6">{</span><span·class="s">"demo.beam"</span><span·class="p">,</span><span·class="w">·</span><span·class="n">BeamCode</span><span·class="p"·data-group-id="2571238601-6">}</span><span·class="p"·data-group-id="2571238601-4">]</span><span[·...·truncated·by·diffoscope;·len:·296,·SHA:·a0e07da21363aa51b7d2689ff627dc1de23c58dc9309edc515d7dbb32d0a2b99·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 602 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 602 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 603 | >·</span><span·class="p"·data-group-id=" | 603 | >·</span><span·class="p"·data-group-id="2571238601-8">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2571238601-9">[</span><span·class="p"·data-group-id="2571238601-10">{</span><span·class="ss">shebang</span><span·class="p">,</spa[·...·truncated·by·diffoscope;·len:·563,·SHA:·d8f90e224addce6d83a793b551db05147ec4e75b41f746d2e90cc571ad7100a9·...·]-12">}</span><span·class="p">,</span><span·class="w"> |
| 604 | ·····</span><span·class="p"·data-group-id=" | 604 | ·····</span><span·class="p"·data-group-id="2571238601-13">{</span><span·class="ss">archive</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ArchiveBin</span><span·class="p"·data-group-id="2571238601-13">}</span><span·class="p"·data-group-id="2571238601-9">]</span><span·class="p[·...·truncated·by·diffoscope;·len:·27,·SHA:·e40577e9a462d429e5a1227ba6de583d225e37d6ab10dd8b4d4f00d4f0f83572·...·]-8">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 605 | ··············</span><span·class="nc">escript</span><span·class="p">:</span><span·class="nf">extract</span><span·class="p"·data-group-id=" | 605 | ··············</span><span·class="nc">escript</span><span·class="p">:</span><span·class="nf">extract</span><span·class="p"·data-group-id="2571238601-14">(</span><span·class="s">"demo.escript"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2571238601-15">[</span><span·class="p"·data-group-id="2571238601-15">]</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·11,·SHA:·99b8696edee97972e901097890c9e2adfe160bcbc9279d47ccff2cee70cfb98c·...·]-14">)</span><span·class="p">.</span><span·class="w"> |
| 606 | </span><span·class="p"·data-group-id=" | 606 | </span><span·class="p"·data-group-id="2571238601-16">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="2571238601-17">[</span><span·class="p"·data-group-id="2571238601-18">{</span><span·class="p"·data-group-id="2571238601-19">{</span><span·class="ss">arch[·...·truncated·by·diffoscope;·len:·75,·SHA:·201b70dbeeb1dedaeeb2c6440ae0d8c563e3847484dac7a1584c8bb1c5572611·...·]-20"><<</span><span·class="mi">80</span><span·class="p">,</span><span·class="mi">75</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">20</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">8</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">118</span><span·class="p">,</span><span·class="mi">7</span><span·class="p">,</span><span·class="mi">98</span><span·class="p">,</span><span·class="mi">60</span><span·class="p">,</span><span·class="mi">105</span><span·class="p">,</span><span·class="w"> |
| 607 | ················</span><span·class="mi">152</span><span·class="p">,</span><span·class="mi">61</span><span·class="p">,</span><span·class="mi">93</span><span·class="p">,</span><span·class="mi">107</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">118</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id=" | 607 | ················</span><span·class="mi">152</span><span·class="p">,</span><span·class="mi">61</span><span·class="p">,</span><span·class="mi">93</span><span·class="p">,</span><span·class="mi">107</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">118</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="2571238601-20">>></span><span·class="p"·data-group-id="2571238601-19">}</span><span·class="w"> |
| 608 | ·····</span><span·class="p"·data-group-id=" | 608 | ·····</span><span·class="p"·data-group-id="2571238601-21">{</span><span·class="ss">emu_args</span><span·class="p">,</span><span·class="ss">undefined</span><span·class="p"·data-group-id="2571238601-21">}</span><span·class="p">]</span><span·class="p"·data-group-id="2571238601-18">}</span></code></pre> |
| 609 | ··</section> | 609 | ··</section> |
| 610 | </section> | 610 | </section> |
| 611 | <section·class="detail"·id="script_name/0"> | 611 | <section·class="detail"·id="script_name/0"> |
| 612 | ··<div·class="detail-header"> | 612 | ··<div·class="detail-header"> |
| 613 | ····<a·href="#script_name/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 613 | ····<a·href="#script_name/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 614 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 614 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 216, 35 lines modified | Offset 216, 35 lines modified | ||
| 216 | disallow·concurrent·updates·during·the·entire·traversal.</p><p>Moreover,·traversals·not·done·in·a·<em>safe</em>·way,·on·tables·where·keys·are·inserted | 216 | disallow·concurrent·updates·during·the·entire·traversal.</p><p>Moreover,·traversals·not·done·in·a·<em>safe</em>·way,·on·tables·where·keys·are·inserted |
| 217 | or·deleted·during·the·traversal,·may·yield·the·following·undesired·effects:</p><ul><li>Any·key·may·be·missed.</li><li>Any·key·may·be·found·more·than·once.</li><li>The·traversal·may·fail·with·<code·class="inline">badarg</code>·exception·if·keys·are·deleted.</li></ul><p>A·table·traversal·is·<em>safe</em>·if·either</p><ul><li>the·table·is·of·type·<code·class="inline">ordered_set</code>.</li><li>the·entire·table·traversal·is·done·within·one·ETS·function·call.</li><li>function·<a·href="#safe_fixtable/2"><code·class="inline">safe_fixtable/2</code></a>·is·used·to·keep·the·table·fixated·during·the·entire | 217 | or·deleted·during·the·traversal,·may·yield·the·following·undesired·effects:</p><ul><li>Any·key·may·be·missed.</li><li>Any·key·may·be·found·more·than·once.</li><li>The·traversal·may·fail·with·<code·class="inline">badarg</code>·exception·if·keys·are·deleted.</li></ul><p>A·table·traversal·is·<em>safe</em>·if·either</p><ul><li>the·table·is·of·type·<code·class="inline">ordered_set</code>.</li><li>the·entire·table·traversal·is·done·within·one·ETS·function·call.</li><li>function·<a·href="#safe_fixtable/2"><code·class="inline">safe_fixtable/2</code></a>·is·used·to·keep·the·table·fixated·during·the·entire |
| 218 | traversal.</li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Even·though·the·access·of·a·single·object·is·always·guaranteed·to·be | 218 | traversal.</li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Even·though·the·access·of·a·single·object·is·always·guaranteed·to·be |
| 219 | <a·href="ets.html#module-concurrency">atomic·and·isolated</a>,·each·traversal·through·a·table·to | 219 | <a·href="ets.html#module-concurrency">atomic·and·isolated</a>,·each·traversal·through·a·table·to |
| 220 | find·the·next·key·is·not·done·with·such·guarantees.·This·is·often·not·a | 220 | find·the·next·key·is·not·done·with·such·guarantees.·This·is·often·not·a |
| 221 | problem,·but·may·cause·rare·subtle·"unexpected"·effects·if·a·concurrent | 221 | problem,·but·may·cause·rare·subtle·"unexpected"·effects·if·a·concurrent |
| 222 | process·inserts·objects·during·a·traversal.·For·example,·consider·one·process | 222 | process·inserts·objects·during·a·traversal.·For·example,·consider·one·process |
| 223 | doing</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id=" | 223 | doing</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id="5872873750-1">(</span><span·class="ss">t</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5872873750-2">[</span><span·class="ss">ordered_set</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">named_ta[·...·truncated·by·diffoscope;·len:·104,·SHA:·a2a19c471968e5202818c7cd8ec64639574d48f6d8af20670c4fe9c60101a5bf·...·]-1">)</span><span·class="p">,</span><span·class="w"> |
| 224 | </span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">insert</span><span·class="p"·data-group-id=" | 224 | </span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">insert</span><span·class="p"·data-group-id="5872873750-3">(</span><span·class="ss">t</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5872873750-4">{</span><span·class="mi">1</span><span·class="p"·data-group-id="5872873750-4">}</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·11,·SHA:·8acee11560f8bbd044a5fc17b00b3cccda64008869ada88549533e820014bda4·...·]-3">)</span><span·class="p">,</span><span·class="w"> |
| 225 | </span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">insert</span><span·class="p"·data-group-id=" | 225 | </span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">insert</span><span·class="p"·data-group-id="5872873750-5">(</span><span·class="ss">t</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5872873750-6">{</span><span·class="mi">2</span><span·class="p"·data-group-id="5872873750-6">}</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·11,·SHA:·8acee11560f8bbd044a5fc17b00b3cccda64008869ada88549533e820014bda4·...·]-5">)</span><span·class="p">,</span><span·class="w"> |
| 226 | </span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">insert</span><span·class="p"·data-group-id=" | 226 | </span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">insert</span><span·class="p"·data-group-id="5872873750-7">(</span><span·class="ss">t</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5872873750-8">{</span><span·class="mi">3</span><span·class="p"·data-group-id="5872873750-8">}</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·11,·SHA:·8acee11560f8bbd044a5fc17b00b3cccda64008869ada88549533e820014bda4·...·]-7">)</span><span·class="p">,</span></code></pre><p>A·concurrent·call·to·<code·class="inline">ets:first(t)</code>,·done·by·another·process,·may·then·in·rare |
| 227 | cases·return·<code·class="inline">2</code>·even·though·<code·class="inline">2</code>·has·never·existed·in·the·table·ordered·as·the | 227 | cases·return·<code·class="inline">2</code>·even·though·<code·class="inline">2</code>·has·never·existed·in·the·table·ordered·as·the |
| 228 | first·key.·In·the·same·way,·a·concurrent·call·to·<code·class="inline">ets:next(t,·1)</code>·may·return | 228 | first·key.·In·the·same·way,·a·concurrent·call·to·<code·class="inline">ets:next(t,·1)</code>·may·return |
| 229 | <code·class="inline">3</code>·even·though·<code·class="inline">3</code>·never·existed·in·the·table·ordered·directly·after·<code·class="inline">1</code>.</p><p>Effects·like·this·are·improbable·but·possible.·The·probability·will·further·be | 229 | <code·class="inline">3</code>·even·though·<code·class="inline">3</code>·never·existed·in·the·table·ordered·directly·after·<code·class="inline">1</code>.</p><p>Effects·like·this·are·improbable·but·possible.·The·probability·will·further·be |
| 230 | reduced·(if·not·vanish)·if·table·option | 230 | reduced·(if·not·vanish)·if·table·option |
| 231 | <a·href="ets.html#new_2_write_concurrency"><code·class="inline">write_concurrency</code></a>·is·not·enabled.·This | 231 | <a·href="ets.html#new_2_write_concurrency"><code·class="inline">write_concurrency</code></a>·is·not·enabled.·This |
| 232 | can·also·only·be·a·potential·concern·for·<code·class="inline">ordered_set</code>·where·the·traversal | 232 | can·also·only·be·a·potential·concern·for·<code·class="inline">ordered_set</code>·where·the·traversal |
| 233 | order·is·defined.</p></section><p>Traversals·using·<code·class="inline">match</code>·and·<code·class="inline">select</code>·functions·may·not·need·to·scan·the·entire | 233 | order·is·defined.</p></section><p>Traversals·using·<code·class="inline">match</code>·and·<code·class="inline">select</code>·functions·may·not·need·to·scan·the·entire |
| 234 | table·depending·on·how·the·key·is·specified.·A·match·pattern·with·a·<em>fully·bound | 234 | table·depending·on·how·the·key·is·specified.·A·match·pattern·with·a·<em>fully·bound |
| 235 | key</em>·(without·any·match·variables)·will·optimize·the·operation·to·a·single·key | 235 | key</em>·(without·any·match·variables)·will·optimize·the·operation·to·a·single·key |
| 236 | lookup·without·any·table·traversal·at·all.·For·<code·class="inline">ordered_set</code>·a·<em>partially·bound | 236 | lookup·without·any·table·traversal·at·all.·For·<code·class="inline">ordered_set</code>·a·<em>partially·bound |
| 237 | key</em>·will·limit·the·traversal·to·only·scan·a·subset·of·the·table·based·on·term | 237 | key</em>·will·limit·the·traversal·to·only·scan·a·subset·of·the·table·based·on·term |
| 238 | order.·A·partially·bound·key·is·either·a·list·or·a·tuple·with·a·prefix·that·is | 238 | order.·A·partially·bound·key·is·either·a·list·or·a·tuple·with·a·prefix·that·is |
| 239 | fully·bound.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">T</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id=" | 239 | fully·bound.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">T</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id="3128050793-1">(</span><span·class="ss">t</span><span·class="p">,</span><span·class="p"·data-group-id="3128050793-2">[</span><span·class="ss">ordered_set</span><span·class="p"·data-group-id="3128050793-2">]</span><span·class="p"·data-group-id="3128050793-1"[·...·truncated·by·diffoscope;·len:·546,·SHA:·a0b1ddf90fc8e698d5ddd73bb916c96b8e3a2ab9385c4f5b57403ee40fea2d12·...·]-3">)</span><span·class="p">.</span><span·class="w"> |
| 240 | </span><span·class="ss">true</span><span·class="gp·unselectable"> | 240 | </span><span·class="ss">true</span><span·class="gp·unselectable"> |
| 241 | 2>·</span><span·class="c1">%%·Efficient·search·of·all·with·area·code·555</span><span·class="gp·unselectable"> | 241 | 2>·</span><span·class="c1">%%·Efficient·search·of·all·with·area·code·555</span><span·class="gp·unselectable"> |
| 242 | 2>·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">match</span><span·class="p"·data-group-id=" | 242 | 2>·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">match</span><span·class="p"·data-group-id="3128050793-5">(</span><span·class="n">T</span><span·class="p">,</span><span·class="p"·data-group-id="3128050793-6">{</span><span·class="p"·data-group-id="3128050793-7">[</span><span·class="sc">$5</span><span·class="p">,</span><span·class="sc">$5</span><spa[·...·truncated·by·diffoscope;·len:·387,·SHA:·12294a7f1a9dfaf4dadc8cc02a3fcc5117915a3bf99790b8bbd92f7368fd3c12·...·]-5">)</span><span·class="p">.</span><span·class="w"> |
| 243 | </span><span·class="p"·data-group-id=" | 243 | </span><span·class="p"·data-group-id="3128050793-8">[</span><span·class="p"·data-group-id="3128050793-9">[</span><span·class="s">"1234"</span><span·class="p">,</span><span·class="s">"John·Smith"</span><span·class="p"·data-group-id="3128050793-9">]</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·21,·SHA:·e37c43887c7514ea4fa0667b10620a016baa153af82da46d0e2a331eab7fe0e5·...·]-8">]</span></code></pre><p><a·href=""·id="match_spec"></a></p><h2·id="module-match-specifications"·class="section-heading"> |
| 244 | ··<a·href="#module-match-specifications"·class="hover-link"> | 244 | ··<a·href="#module-match-specifications"·class="hover-link"> |
| 245 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 245 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 246 | ··</a> | 246 | ··</a> |
| 247 | ··<span·class="text">Match·Specifications</span> | 247 | ··<span·class="text">Match·Specifications</span> |
| 248 | </h2> | 248 | </h2> |
| 249 | <p>Some·of·the·functions·use·a·<em>match·specification</em>,·<code·class="inline">match_spec</code>.·For·a·brief | 249 | <p>Some·of·the·functions·use·a·<em>match·specification</em>,·<code·class="inline">match_spec</code>.·For·a·brief |
| 250 | explanation,·see·<a·href="#select/2"><code·class="inline">select/2</code></a>.·For·a·detailed·description,·see·section | 250 | explanation,·see·<a·href="#select/2"><code·class="inline">select/2</code></a>.·For·a·detailed·description,·see·section |
| Offset 1886, 27 lines modified | Offset 1886, 27 lines modified | ||
| 1886 | function.</p><p>The·parse·transform·is·provided·in·the·<code·class="inline">ms_transform</code>·module·and·the·source | 1886 | function.</p><p>The·parse·transform·is·provided·in·the·<code·class="inline">ms_transform</code>·module·and·the·source |
| 1887 | <em>must</em>·include·file·<code·class="inline">ms_transform.hrl</code>·in·STDLIB·for·this·pseudo·function·to | 1887 | <em>must</em>·include·file·<code·class="inline">ms_transform.hrl</code>·in·STDLIB·for·this·pseudo·function·to |
| 1888 | work.·Failing·to·include·the·hrl·file·in·the·source·results·in·a·runtime·error, | 1888 | work.·Failing·to·include·the·hrl·file·in·the·source·results·in·a·runtime·error, |
| 1889 | not·a·compile·time·error.·The·include·file·is·easiest·included·by·adding·line | 1889 | not·a·compile·time·error.·The·include·file·is·easiest·included·by·adding·line |
| 1890 | <code·class="inline">-include_lib("stdlib/include/ms_transform.hrl").</code>·to·the·source·file.</p><p>The·fun·is·very·restricted,·it·can·take·only·a·single·parameter·(the·object·to | 1890 | <code·class="inline">-include_lib("stdlib/include/ms_transform.hrl").</code>·to·the·source·file.</p><p>The·fun·is·very·restricted,·it·can·take·only·a·single·parameter·(the·object·to |
| 1891 | match):·a·sole·variable·or·a·tuple.·It·must·use·the·<code·class="inline">is_</code>·guard·tests.·Language | 1891 | match):·a·sole·variable·or·a·tuple.·It·must·use·the·<code·class="inline">is_</code>·guard·tests.·Language |
| 1892 | constructs·that·have·no·representation·in·a·match·specification·(<code·class="inline">if</code>,·<code·class="inline">case</code>, | 1892 | constructs·that·have·no·representation·in·a·match·specification·(<code·class="inline">if</code>,·<code·class="inline">case</code>, |
| 1893 | <code·class="inline">receive</code>,·and·so·on)·are·not·allowed.</p><p>The·return·value·is·the·resulting·match·specification.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">fun2ms</span><span·class="p"·data-group-id=" | 1893 | <code·class="inline">receive</code>,·and·so·on)·are·not·allowed.</p><p>The·return·value·is·the·resulting·match·specification.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">fun2ms</span><span·class="p"·data-group-id="8300836210-1">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="8300836210-2">(</span><span·class="p"·data-group-id="8300836210-3">{</span><span·class="n">M</span><span·class="p">,</span><span·class="n">N</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·467,·SHA:·a625600533e28dfd1fd6d61f5393b0e068b4d7ecf14543384c290086b712d90e·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 1894 | </span><span·class="p"·data-group-id=" | 1894 | </span><span·class="p"·data-group-id="8300836210-4">[</span><span·class="p"·data-group-id="8300836210-5">{</span><span·class="p"·data-group-id="8300836210-6">{</span><span·class="ss">'$1'</span><span·class="p">,</span><span·class="ss">'$2'</span><span·class="p"·data-group-id="8[·...·truncated·by·diffoscope;·len:·664,·SHA:·0bad16c57a5ae2e6a09cdccdd335ad50a08828be8ec183ec0e691d04400af88e·...·]-4">]</span></code></pre><p>Variables·from·the·environment·can·be·imported,·so·that·the·following·works:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="n">X</span><span·class="o">=</span><span·class="mi">3</span><span·class="p">.</span><span·class="w"> |
| 1895 | </span><span·class="mi">3</span><span·class="gp·unselectable"> | 1895 | </span><span·class="mi">3</span><span·class="gp·unselectable"> |
| 1896 | 3>·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">fun2ms</span><span·class="p"·data-group-id=" | 1896 | 3>·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">fun2ms</span><span·class="p"·data-group-id="2311359659-1">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="2311359659-2">(</span><span·class="p"·data-group-id="2311359659-3">{</span><span·class="n">M</span><span·class="p">,</span><span·class="n">N</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·466,·SHA:·a539131395c08e09721cee61f4969647aa6088d6ebf9b70e77881f7a4b1c84f2·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 1897 | </span><span·class="p"·data-group-id=" | 1897 | </span><span·class="p"·data-group-id="2311359659-4">[</span><span·class="p"·data-group-id="2311359659-5">{</span><span·class="p"·data-group-id="2311359659-6">{</span><span·class="ss">'$1'</span><span·class="p">,</span><span·class="ss">'$2'</span><span·class="p"·data-group-id="2[·...·truncated·by·diffoscope;·len:·825,·SHA:·da77d32d20bcbb55b59ab4fcec947c98250da86768b8890d7dfde8676da0a795·...·]-4">]</span></code></pre><p>The·imported·variables·are·replaced·by·match·specification·<code·class="inline">const</code>·expressions, |
| 1898 | which·is·consistent·with·the·static·scoping·for·Erlang·funs.·However,·local·or | 1898 | which·is·consistent·with·the·static·scoping·for·Erlang·funs.·However,·local·or |
| 1899 | global·function·calls·cannot·be·in·the·guard·or·body·of·the·fun.·Calls·to | 1899 | global·function·calls·cannot·be·in·the·guard·or·body·of·the·fun.·Calls·to |
| 1900 | built-in·match·specification·functions·is·of·course·allowed:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">4>·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">fun2ms</span><span·class="p"·data-group-id=" | 1900 | built-in·match·specification·functions·is·of·course·allowed:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">4>·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">fun2ms</span><span·class="p"·data-group-id="8531301673-1">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="8531301673-2">(</span><span·class="p"·data-group-id="8531301673-3">{</span><span·class="n">M</span><span·class="p">,</span><span·class="n">N</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·674,·SHA:·46ff09c4ccafa2db638c6f6ffab6d7bf07d53139fa6bb6428986836ed986ba78·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 1901 | </span><span·class="n">Error</span><span·class="p">:</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">containing</span><span·class="w">·</span><span·class="ss">local</span><span·class="w">·</span><span·class="n">Erlang</span><span·class="w">·</span><span·class="ss">function</span><span·class="w">·</span><span·class="nf">calls</span><span·class="w"> | 1901 | </span><span·class="n">Error</span><span·class="p">:</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">containing</span><span·class="w">·</span><span·class="ss">local</span><span·class="w">·</span><span·class="n">Erlang</span><span·class="w">·</span><span·class="ss">function</span><span·class="w">·</span><span·class="nf">calls</span><span·class="w"> |
| 1902 | </span><span·class="p"·data-group-id=" | 1902 | </span><span·class="p"·data-group-id="8531301673-5">(</span><span·class="ss">'my_fun'</span><span·class="w">·</span><span·class="ss">called</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">guard</span><span·class="p"·data-group-id="853130[·...·truncated·by·diffoscope;·len:·4,·SHA:·5514a9f709310b22ee9bddd4e6da1b2b8b04d1ad5c3dcb47ed945c356b9b852d·...·]-5">)</span><span·class="w">·</span><span·class="ss">cannot</span><span·class="w">·</span><span·class="ss">be</span><span·class="w">·</span><span·class="ss">translated</span><span·class="w">·</span><span·class="ss">into</span><span·class="w">·</span><span·class="ss">match_spec</span><span·class="w"> |
| 1903 | </span><span·class="p"·data-group-id=" | 1903 | </span><span·class="p"·data-group-id="8531301673-6">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="ss">transform_error</span><span·class="p"·data-group-id="8531301673-6">}</span><span·class="gp·unselectable"> |
| 1904 | 5>·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">fun2ms</span><span·class="p"·data-group-id=" | 1904 | 5>·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">fun2ms</span><span·class="p"·data-group-id="8531301673-7">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="8531301673-8">(</span><span·class="p"·data-group-id="8531301673-9">{</span><span·class="n">M</span><span·class="p">,</span><span·class="n">N</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·677,·SHA:·91f5cbd6a369cb471f0a36561f75abe38dccfcf00b19e5aa6ae00febd7c9ba61·...·]-7">)</span><span·class="p">.</span><span·class="w"> |
| 1905 | </span><span·class="p"·data-group-id=" | 1905 | </span><span·class="p"·data-group-id="8531301673-11">[</span><span·class="p"·data-group-id="8531301673-12">{</span><span·class="p"·data-group-id="8531301673-13">{</span><span·class="ss">'$1'</span><span·class="p">,</span><span·class="ss">'$2'</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·1059,·SHA:·68a27929d9fde5e6990b88295d14342888ebb1e3689b3b323d34ea6ce5fad073·...·]-11">]</span></code></pre><p>As·shown·by·the·example,·the·function·can·be·called·from·the·shell·also.·The·fun |
| 1906 | must·be·literally·in·the·call·when·used·from·the·shell·as·well.</p><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>If·the·<code·class="inline">parse_transform</code>·is·not·applied·to·a·module·that·calls·this·pseudo | 1906 | must·be·literally·in·the·call·when·used·from·the·shell·as·well.</p><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>If·the·<code·class="inline">parse_transform</code>·is·not·applied·to·a·module·that·calls·this·pseudo |
| 1907 | function,·the·call·fails·in·runtime·(with·a·<code·class="inline">badarg</code>).·The·<code·class="inline">ets</code>·module | 1907 | function,·the·call·fails·in·runtime·(with·a·<code·class="inline">badarg</code>).·The·<code·class="inline">ets</code>·module |
| 1908 | exports·a·function·with·this·name,·but·it·is·never·to·be·called·except·when | 1908 | exports·a·function·with·this·name,·but·it·is·never·to·be·called·except·when |
| 1909 | using·the·function·in·the·shell.·If·the·<code·class="inline">parse_transform</code>·is·properly·applied | 1909 | using·the·function·in·the·shell.·If·the·<code·class="inline">parse_transform</code>·is·properly·applied |
| 1910 | by·including·header·file·<code·class="inline">ms_transform.hrl</code>,·compiled·code·never·calls·the | 1910 | by·including·header·file·<code·class="inline">ms_transform.hrl</code>,·compiled·code·never·calls·the |
| 1911 | function,·but·the·function·call·is·replaced·by·a·literal·match·specification.</p></section><p>For·more·information,·see·<a·href="ms_transform.html"><code·class="inline">ms_transform</code></a>.</p> | 1911 | function,·but·the·function·call·is·replaced·by·a·literal·match·specification.</p></section><p>For·more·information,·see·<a·href="ms_transform.html"><code·class="inline">ms_transform</code></a>.</p> |
| 1912 | ··</section> | 1912 | ··</section> |
| Offset 2491, 20 lines modified | Offset 2491, 20 lines modified | ||
| 2491 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·match(Table,·Pattern)·->·[Match] | 2491 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·match(Table,·Pattern)·->·[Match] |
| 2492 | ···············when·Table·::·<a·href="#t:table/0">table</a>(),·Pattern·::·<a·href="#t:match_pattern/0">match_pattern</a>(),·Match·::·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>()].</pre> | 2492 | ···············when·Table·::·<a·href="#t:table/0">table</a>(),·Pattern·::·<a·href="#t:match_pattern/0">match_pattern</a>(),·Match·::·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>()].</pre> |
| 2493 | ······</div> | 2493 | ······</div> |
| 2494 | <p>Matches·the·objects·in·table·<code·class="inline">Table</code>·against·pattern·<code·class="inline">Pattern</code>.</p><p>A·pattern·is·a·term·that·can·contain:</p><ul><li>Bound·parts·(Erlang·terms)</li><li><code·class="inline">'_'</code>·that·matches·any·Erlang·term</li><li>Pattern·variables·<code·class="inline">'$N'</code>,·where·<code·class="inline">N</code>=0,1,...</li></ul><p>The·function·returns·a·list·with·one·element·for·each·matching·object,·where | 2494 | <p>Matches·the·objects·in·table·<code·class="inline">Table</code>·against·pattern·<code·class="inline">Pattern</code>.</p><p>A·pattern·is·a·term·that·can·contain:</p><ul><li>Bound·parts·(Erlang·terms)</li><li><code·class="inline">'_'</code>·that·matches·any·Erlang·term</li><li>Pattern·variables·<code·class="inline">'$N'</code>,·where·<code·class="inline">N</code>=0,1,...</li></ul><p>The·function·returns·a·list·with·one·element·for·each·matching·object,·where |
| 2495 | each·element·is·an·ordered·list·of·pattern·variable·bindings,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">6>·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">match</span><span·class="p"·data-group-id=" | 2495 | each·element·is·an·ordered·list·of·pattern·variable·bindings,·for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">6>·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">match</span><span·class="p"·data-group-id="6204249459-1">(</span><span·class="n">T</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'$1'</span><span·class="p"·data-group-id="6204249459-1">)</span><span·class="p">.</span><span·class="w">·</span><span·class="c1">%·Matches·every·object·in·table</span><span·class="w"> |
| 2496 | </span><span·class="p"·data-group-id=" | 2496 | </span><span·class="p"·data-group-id="6204249459-2">[</span><span·class="p"·data-group-id="6204249459-3">[</span><span·class="p"·data-group-id="6204249459-4">{</span><span·class="ss">rufsen</span><span·class="p">,</span><span·class="ss">dog</span><span·class="p">,</span><span·class="mi">7</spa[·...·truncated·by·diffoscope;·len:·882,·SHA:·e7ff5fd8174fe5dc90ec4491f02e55edeee695face612ac113d9905ba8d96ea2·...·]-2">]</span><span·class="gp·unselectable"> |
| 2497 | 7>·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">match</span><span·class="p"·data-group-id=" | 2497 | 7>·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">match</span><span·class="p"·data-group-id="6204249459-9">(</span><span·class="n">T</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6204249459-10">{</span><span·class="ss">'_'</span><span·class="p">,</span><span·class="ss">dog</span><span·class="p">,</spa[·...·truncated·by·diffoscope;·len:·133,·SHA:·cd028ad5a3fcfe2cfc120eb383c0938378bbfc3a807e6abbd56c9d3c8b16c907·...·]-9">)</span><span·class="p">.</span><span·class="w"> |
| 2498 | </span><span·class="p"·data-group-id=" | 2498 | </span><span·class="p"·data-group-id="6204249459-11">[</span><span·class="p"·data-group-id="6204249459-12">[</span><span·class="mi">7</span><span·class="p"·data-group-id="6204249459-12">]</span><span·class="p">,</span><span·class="p"·data-group-id="6204249459-13">[</span><span·class="mi">5</sp[·...·truncated·by·diffoscope;·len:·98,·SHA:·a3f1277e50631605256fa7f5dff09e767a5481532a6ec1ddcfe212613bf7675a·...·]-11">]</span><span·class="gp·unselectable"> |
| 2499 | 8>·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">match</span><span·class="p"·data-group-id=" | 2499 | 8>·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">match</span><span·class="p"·data-group-id="6204249459-14">(</span><span·class="n">T</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6204249459-15">{</span><span·class="ss">'_'</span><span·class="p">,</span><span·class="ss">cow</span><span·class="p">,</sp[·...·truncated·by·diffoscope;·len:·134,·SHA:·3140667ed68cb4b1af752ed181a94f791072290a616cd3f7e794805b223f1d2f·...·]-14">)</span><span·class="p">.</span><span·class="w"> |
| 2500 | </span><span·class="p"·data-group-id=" | 2500 | </span><span·class="p"·data-group-id="6204249459-16">[</span><span·class="p"·data-group-id="6204249459-16">]</span></code></pre><p>If·the·key·is·specified·in·the·pattern,·the·match·is·very·efficient.·If·the·key |
| 2501 | is·not·specified,·that·is,·if·it·is·a·variable·or·an·underscore,·the·entire | 2501 | is·not·specified,·that·is,·if·it·is·a·variable·or·an·underscore,·the·entire |
| 2502 | table·must·be·searched.·The·search·time·can·be·substantial·if·the·table·is·very | 2502 | table·must·be·searched.·The·search·time·can·be·substantial·if·the·table·is·very |
| 2503 | large.</p><p>For·tables·of·type·<code·class="inline">ordered_set</code>,·the·result·is·in·the·same·order·as·in·a | 2503 | large.</p><p>For·tables·of·type·<code·class="inline">ordered_set</code>,·the·result·is·in·the·same·order·as·in·a |
| 2504 | <code·class="inline">first</code>/<code·class="inline">next</code>·traversal.</p> | 2504 | <code·class="inline">first</code>/<code·class="inline">next</code>·traversal.</p> |
| 2505 | ··</section> | 2505 | ··</section> |
| 2506 | </section> | 2506 | </section> |
| 2507 | <section·class="detail"·id="match/3"> | 2507 | <section·class="detail"·id="match/3"> |
| Offset 2734, 18 lines modified | Offset 2734, 18 lines modified | ||
| 2734 | use.</p><p>The·matching·is·executed·on·each·element·in·<code·class="inline">List</code>·and·the·function·returns·a | 2734 | use.</p><p>The·matching·is·executed·on·each·element·in·<code·class="inline">List</code>·and·the·function·returns·a |
| 2735 | list·containing·all·results.·If·an·element·in·<code·class="inline">List</code>·does·not·match,·nothing·is | 2735 | list·containing·all·results.·If·an·element·in·<code·class="inline">List</code>·does·not·match,·nothing·is |
| 2736 | returned·for·that·element.·The·length·of·the·result·list·is·therefore·equal·or | 2736 | returned·for·that·element.·The·length·of·the·result·list·is·therefore·equal·or |
| 2737 | less·than·the·length·of·parameter·<code·class="inline">List</code>.</p><p><em>Example:</em></p><p>The·following·two·calls·give·the·same·result·(but·certainly·not·the·same | 2737 | less·than·the·length·of·parameter·<code·class="inline">List</code>.</p><p><em>Example:</em></p><p>The·following·two·calls·give·the·same·result·(but·certainly·not·the·same |
| 2738 | execution·time):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Table</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="ss">new</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 2738 | execution·time):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Table</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="ss">new</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 2739 | </span><span·class="n">MatchSpec</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 2739 | </span><span·class="n">MatchSpec</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 2740 | </span><span·class="c1">%·The·following·call...</span><span·class="w"> | 2740 | </span><span·class="c1">%·The·following·call...</span><span·class="w"> |
| 2741 | </span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">match_spec_run</span><span·class="p"·data-group-id=" | 2741 | </span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">match_spec_run</span><span·class="p"·data-group-id="1540699495-1">(</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">tab2list</span><span·class="p"·data-group-id="1540699495-2">(</span><span·class="n">Table</span><span·class="p"·data-group-id="1540699495-2">)</span><span·class="p">,</span><span·class="w"> |
| 2742 | ···················</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">match_spec_compile</span><span·class="p"·data-group-id=" | 2742 | ···················</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">match_spec_compile</span><span·class="p"·data-group-id="1540699495-3">(</span><span·class="n">MatchSpec</span><span·class="p"·data-group-id="1540699495-3">)</span><span·class="p"·data-group-id="1540699495-1">)</span><span·class="p">,</span><span·class="w"> |
| 2743 | </span><span·class="c1">%·...gives·the·same·result·as·the·more·common·(and·more·efficient)</span><span·class="w"> | 2743 | </span><span·class="c1">%·...gives·the·same·result·as·the·more·common·(and·more·efficient)</span><span·class="w"> |
| 2744 | </span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id=" | 2744 | </span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id="1540699495-4">(</span><span·class="n">Table</span><span·class="p">,</span><span·class="w">·</span><span·class="n">MatchSpec</span><span·class="p"·data-group-id="1540699495-4">)</span><span·class="p">,</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>This·function·has·limited·use·in·normal·code.·It·is·used·by·the·<a·href="dets.html"><code·class="inline">dets</code></a> |
| 2745 | module·to·perform·the·<a·href="dets.html#select/1"><code·class="inline">dets:select/1</code></a>·operations·and·by·Mnesia·during | 2745 | module·to·perform·the·<a·href="dets.html#select/1"><code·class="inline">dets:select/1</code></a>·operations·and·by·Mnesia·during |
| 2746 | transactions.</p></section> | 2746 | transactions.</p></section> |
| 2747 | ··</section> | 2747 | ··</section> |
| 2748 | </section> | 2748 | </section> |
| 2749 | <section·class="detail"·id="member/2"> | 2749 | <section·class="detail"·id="member/2"> |
| 2750 | ··<div·class="detail-header"> | 2750 | ··<div·class="detail-header"> |
| Offset 3084, 27 lines modified | Offset 3084, 27 lines modified | ||
| 3084 | <p>Restores·an·opaque·continuation·returned·by·<a·href="#select/3"><code·class="inline">select/3</code></a>·or·<a·href="#select/1"><code·class="inline">select/1</code></a>·if·the | 3084 | <p>Restores·an·opaque·continuation·returned·by·<a·href="#select/3"><code·class="inline">select/3</code></a>·or·<a·href="#select/1"><code·class="inline">select/1</code></a>·if·the |
| 3085 | continuation·has·passed·through·external·term·format·(been·sent·between·nodes·or | 3085 | continuation·has·passed·through·external·term·format·(been·sent·between·nodes·or |
| 3086 | stored·on·disk).</p><p>The·reason·for·this·function·is·that·continuation·terms·contain·compiled·match | 3086 | stored·on·disk).</p><p>The·reason·for·this·function·is·that·continuation·terms·contain·compiled·match |
| 3087 | specifications·and·may·therefore·be·invalidated·if·converted·to·external·term | 3087 | specifications·and·may·therefore·be·invalidated·if·converted·to·external·term |
| 3088 | format.·Given·that·the·original·match·specification·is·kept·intact,·the | 3088 | format.·Given·that·the·original·match·specification·is·kept·intact,·the |
| 3089 | continuation·can·be·restored,·meaning·it·can·once·again·be·used·in·subsequent | 3089 | continuation·can·be·restored,·meaning·it·can·once·again·be·used·in·subsequent |
| 3090 | <a·href="#select/1"><code·class="inline">select/1</code></a>·calls·even·though·it·has·been·stored·on·disk·or·on | 3090 | <a·href="#select/1"><code·class="inline">select/1</code></a>·calls·even·though·it·has·been·stored·on·disk·or·on |
| 3091 | another·node.</p><p><em>Examples:</em></p><p>The·following·sequence·of·calls·may·fail:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">T</span><span·class="o">=</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id=" | 3091 | another·node.</p><p><em>Examples:</em></p><p>The·following·sequence·of·calls·may·fail:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">T</span><span·class="o">=</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id="4577198718-1">(</span><span·class="ss">x</span><span·class="p">,</span><span·class="p"·data-group-id="4577198718-2">[</span><span·class="p"·data-group-id="4577198718-2">]</span><span·class="p"·data-group-id="4577198718-1">)</span><span·class="p">,</span><span·class="w"> |
| 3092 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 3092 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 3093 | </span><span·class="n">MS</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">fun2ms</span><span·class="p"·data-group-id=" | 3093 | </span><span·class="n">MS</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">fun2ms</span><span·class="p"·data-group-id="4577198718-3">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="4577198718-4">(</span><span·class="p"·data-group-id="4577198718-5">{</span><span·class="n">N</span><span·class="p">,</span><span·class="p">_</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·722,·SHA:·2d79659e4e59fff5a09d77c3e47e32651d568ecc39e4a4a21bc95ae247da4085·...·]-3">)</span><span·class="p">,</span><span·class="w"> |
| 3094 | </span><span·class="p"·data-group-id=" | 3094 | </span><span·class="p"·data-group-id="4577198718-7">{</span><span·class="p">_</span><span·class="p">,</span><span·class="n">C</span><span·class="p"·data-group-id="4577198718-7">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ets</span><span·clas[·...·truncated·by·diffoscope;·len:·309,·SHA:·2be9ac5b18a3b3c61b783d3c50d48e21c1738a4bf56bbc81ca99d357f49f9ba3·...·]-8">)</span><span·class="p">,</span><span·class="w"> |
| 3095 | </span><span·class="n">MaybeBroken</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">binary_to_term</span><span·class="p"·data-group-id=" | 3095 | </span><span·class="n">MaybeBroken</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">binary_to_term</span><span·class="p"·data-group-id="4577198718-9">(</span><span·class="nf">term_to_binary</span><span·class="p"·data-group-id="4577198718-10">(</span><span·class="n">C</span><span·class="p"·data-group-id="4577198718-10">)</span><span·class="p"·data-group-id="4577198718-9">)</span><span·class="p">,</span><span·class="w"> |
| 3096 | </span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id=" | 3096 | </span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id="4577198718-11">(</span><span·class="n">MaybeBroken</span><span·class="p"·data-group-id="4577198718-11">)</span><span·class="p">.</span></code></pre><p>The·following·sequence·works,·as·the·call·to |
| 3097 | <a·href="#repair_continuation/2"><code·class="inline">repair_continuation/2</code></a>·reestablishes·the | 3097 | <a·href="#repair_continuation/2"><code·class="inline">repair_continuation/2</code></a>·reestablishes·the |
| 3098 | <code·class="inline">MaybeBroken</code>·continuation.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">T</span><span·class="o">=</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id=" | 3098 | <code·class="inline">MaybeBroken</code>·continuation.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">T</span><span·class="o">=</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id="3023274654-1">(</span><span·class="ss">x</span><span·class="p">,</span><span·class="p"·data-group-id="3023274654-2">[</span><span·class="p"·data-group-id="3023274654-2">]</span><span·class="p"·data-group-id="3023274654-1">)</span><span·class="p">,</span><span·class="w"> |
| 3099 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 3099 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 3100 | </span><span·class="n">MS</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">fun2ms</span><span·class="p"·data-group-id=" | 3100 | </span><span·class="n">MS</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">fun2ms</span><span·class="p"·data-group-id="3023274654-3">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="3023274654-4">(</span><span·class="p"·data-group-id="3023274654-5">{</span><span·class="n">N</span><span·class="p">,</span><span·class="p">_</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·722,·SHA:·2e978a6986da5f7b557864c9118af0e159ea50a50866493808e43d9f847f8c7f·...·]-3">)</span><span·class="p">,</span><span·class="w"> |
| 3101 | </span><span·class="p"·data-group-id=" | 3101 | </span><span·class="p"·data-group-id="3023274654-7">{</span><span·class="p">_</span><span·class="p">,</span><span·class="n">C</span><span·class="p"·data-group-id="3023274654-7">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">ets</span><span·clas[·...·truncated·by·diffoscope;·len:·261,·SHA:·6f4480ac6bcb0a57a63aa95f8606a783ee7df6891e7f9128045238f438a9d6cf·...·]-8">)</span><span·class="p">,</span><span·class="w"> |
| 3102 | </span><span·class="n">MaybeBroken</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">binary_to_term</span><span·class="p"·data-group-id=" | 3102 | </span><span·class="n">MaybeBroken</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">binary_to_term</span><span·class="p"·data-group-id="3023274654-9">(</span><span·class="nf">term_to_binary</span><span·class="p"·data-group-id="3023274654-10">(</span><span·class="n">C</span><span·class="p"·data-group-id="3023274654-10">)</span><span·class="p"·data-group-id="3023274654-9">)</span><span·class="p">,</span><span·class="w"> |
| 3103 | </span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id=" | 3103 | </span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id="3023274654-11">(</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">repair_continuation</span><span·class="p"·data-group-id="3023274654-12">(</span><span·class="n">MaybeBroken</span><span·class="p">,</span><span·class="n">MS</span><s[·...·truncated·by·diffoscope;·len:·93,·SHA:·0df2217afcba62029772e4debeec3f5628018ca0cf83257888e41e449aa4e9f7·...·]-11">)</span><span·class="p">.</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>This·function·is·rarely·needed·in·application·code.·It·is·used·by·Mnesia·to |
| 3104 | provide·distributed·<a·href="#select/3"><code·class="inline">select/3</code></a>·and·<a·href="#select/1"><code·class="inline">select/1</code></a> | 3104 | provide·distributed·<a·href="#select/3"><code·class="inline">select/3</code></a>·and·<a·href="#select/1"><code·class="inline">select/1</code></a> |
| 3105 | sequences.·A·normal·application·would·either·use·Mnesia·or·keep·the | 3105 | sequences.·A·normal·application·would·either·use·Mnesia·or·keep·the |
| 3106 | continuation·from·being·converted·to·external·format.</p><p>The·actual·behavior·of·compiled·match·specifications·when·recreated·from | 3106 | continuation·from·being·converted·to·external·format.</p><p>The·actual·behavior·of·compiled·match·specifications·when·recreated·from |
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| Offset 191, 43 lines modified | Offset 191, 43 lines modified | ||
| 191 | function·has·been·applied·to·all·of·the·results·or·an·error·occurs,·the·last | 191 | function·has·been·applied·to·all·of·the·results·or·an·error·occurs,·the·last |
| 192 | function·is·called·with·argument·<code·class="inline">close</code>,·and·the·reply·is·returned·as·value·of | 192 | function·is·called·with·argument·<code·class="inline">close</code>,·and·the·reply·is·returned·as·value·of |
| 193 | the·current·call·to·the·sort·or·merge·function.</p><p>If·a·function·is·specified·as·input·and·the·last·input·function·returns | 193 | the·current·call·to·the·sort·or·merge·function.</p><p>If·a·function·is·specified·as·input·and·the·last·input·function·returns |
| 194 | <code·class="inline">{end_of_input,·Value}</code>,·the·function·specified·as·output·is·called·with | 194 | <code·class="inline">{end_of_input,·Value}</code>,·the·function·specified·as·output·is·called·with |
| 195 | argument·<code·class="inline">{value,·Value}</code>.·This·makes·it·easy·to·initiate·the·sequence·of·output | 195 | argument·<code·class="inline">{value,·Value}</code>.·This·makes·it·easy·to·initiate·the·sequence·of·output |
| 196 | functions·with·a·value·calculated·by·the·input·functions.</p><p>As·an·example,·consider·sorting·the·terms·on·a·disk·log·file.·A·function·that | 196 | functions·with·a·value·calculated·by·the·input·functions.</p><p>As·an·example,·consider·sorting·the·terms·on·a·disk·log·file.·A·function·that |
| 197 | reads·chunks·from·the·disk·log·and·returns·a·list·of·binaries·is·used·as·input. | 197 | reads·chunks·from·the·disk·log·and·returns·a·list·of·binaries·is·used·as·input. |
| 198 | The·results·are·collected·in·a·list·of·terms.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">sort</span><span·class="p"·data-group-id="3884539670-1">(</span><span·class="n">Log</span><span·class="p"·data-group-id="3884539670-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | ||
| 199 | 198 | The·results·are·collected·in·a·list·of·terms.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">sort</span><span·class="p"·data-group-id="5038557481-1">(</span><span·class="n">Log</span><span·class="p"·data-group-id="5038557481-1">)</span[·...·truncated·by·diffoscope;·len:·46,·SHA:·1097a0bea68d65a431edcb4038943364caa12d307d0cd39d47cedc89a660f4e0·...·]</span><span·class="w"> | |
| 199 | ····</span><span·class="p"·data-group-id="5038557481-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="p"·data-group-id="5038557481-2">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">disk_log</span><span·class="p">:</span><span·class="nf">open</span><span·class="p"·data-group-id="5038557481-3">(</span><span·class="p"·data-group-id="5038557481-4">[</span><span·class="p"·data-group-id="5038557481-5">{</span><span·class="ss">name</span><span·class="p">,</span><span·class="n">Log</span><span·class="p"·data-group-id="5038557481-5">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5038557481-6">{</span><span·class="ss">mode</span><span·class="p">,</span><span·class="ss">read_only</span><span·class="p"·data-group-id="5038557481-6">}</span><span·class="p"·data-group-id="5038557481-4">]</span><span·class="p"·data-group-id="5038557481-3">)</span><span·class="p">,</span><span·class="w"> | ||
| 200 | ····</span><span·class="n">Input</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">input</span><span·class="p"·data-group-id=" | 200 | ····</span><span·class="n">Input</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">input</span><span·class="p"·data-group-id="5038557481-7">(</span><span·class="n">Log</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">start</span><span·class="p"·data-group-id="5038557481-7">)</span><span·class="p">,</span><span·class="w"> |
| 201 | ····</span><span·class="n">Output</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">output</span><span·class="p"·data-group-id=" | 201 | ····</span><span·class="n">Output</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">output</span><span·class="p"·data-group-id="5038557481-8">(</span><span·class="p"·data-group-id="5038557481-9">[</span><span·class="p"·data-group-id="5038557481-9">]</span><span·class="p"·data-group-id="5038557481-8">)</span><span·class="p">,</span><span·class="w"> |
| 202 | ····</span><span·class="n">Reply</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">file_sorter</span><span·class="p">:</span><span·class="nf">sort</span><span·class="p"·data-group-id=" | 202 | ····</span><span·class="n">Reply</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">file_sorter</span><span·class="p">:</span><span·class="nf">sort</span><span·class="p"·data-group-id="5038557481-10">(</span><span·class="n">Input</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Output</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5038557481-11">{</span><span·class="ss">format</s[·...·truncated·by·diffoscope;·len:·151,·SHA:·5c4893184ddb83270c208d861cf831865ca51fd49634e1531e1578e3c2065fbd·...·]-10">)</span><span·class="p">,</span><span·class="w"> |
| 203 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">disk_log</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id=" | 203 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">disk_log</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id="5038557481-12">(</span><span·class="n">Log</span><span·class="p"·data-group-id="5038557481-12">)</span><span·class="p">,</span><span·class="w"> |
| 204 | ····</span><span·class="n">Reply</span><span·class="p">.</span><span·class="w"> | 204 | ····</span><span·class="n">Reply</span><span·class="p">.</span><span·class="w"> |
| 205 | </span><span·class="nf">input</span><span·class="p"·data-group-id=" | 205 | </span><span·class="nf">input</span><span·class="p"·data-group-id="5038557481-13">(</span><span·class="n">Log</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cont</span><span·class="p"·data-group-id="5038557481-13">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 206 | ····</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 206 | ····</span><span·class="nf">fun</span><span·class="p"·data-group-id="5038557481-14">(</span><span·class="ss">close</span><span·class="p"·data-group-id="5038557481-14">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 207 | ············</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> | 207 | ············</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> |
| 208 | ·······</span><span·class="p"·data-group-id=" | 208 | ·······</span><span·class="p"·data-group-id="5038557481-15">(</span><span·class="ss">read</span><span·class="p"·data-group-id="5038557481-15">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 209 | ············</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">disk_log</span><span·class="p">:</span><span·class="nf">chunk</span><span·class="p"·data-group-id=" | 209 | ············</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">disk_log</span><span·class="p">:</span><span·class="nf">chunk</span><span·class="p"·data-group-id="5038557481-16">(</span><span·class="n">Log</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cont</span><span·class="p"·data-group-id="5038557481-16">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 210 | ················</span><span·class="p"·data-group-id=" | 210 | ················</span><span·class="p"·data-group-id="5038557481-17">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="p"·data-group-id="5038557481-17">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 211 | ····················</span><span·class="p"·data-group-id=" | 211 | ····················</span><span·class="p"·data-group-id="5038557481-18">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="p"·data-group-id="5038557481-18">}</span><span·class="p">;</span><span·class="w"> |
| 212 | ················</span><span·class="p"·data-group-id=" | 212 | ················</span><span·class="p"·data-group-id="5038557481-19">{</span><span·class="n">Cont2</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Terms</span><span·class="p"·data-group-id="5038557481-19">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 213 | ····················</span><span·class="p"·data-group-id=" | 213 | ····················</span><span·class="p"·data-group-id="5038557481-20">{</span><span·class="n">Terms</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">input</span><span·class="p"·data-group-id="5038557481-21">(</span><span·class="n">Log</span><span·class="p">,</span><span·class="w">·</span>[·...·truncated·by·diffoscope;·len:·123,·SHA:·661a8b64440b2c3a5f47c3c5d8e552d14799117949bdb21b1153ab407eba6308·...·]-20">}</span><span·class="p">;</span><span·class="w"> |
| 214 | ················</span><span·class="p"·data-group-id=" | 214 | ················</span><span·class="p"·data-group-id="5038557481-22">{</span><span·class="n">Cont2</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Terms</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">Badbytes</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·15,·SHA:·0f591343fac1b9af8cc0b265bc6b953c19a251c2ef80b4f4c2c6d21004f1dec9·...·]-22">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 215 | ····················</span><span·class="p"·data-group-id=" | 215 | ····················</span><span·class="p"·data-group-id="5038557481-23">{</span><span·class="n">Terms</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">input</span><span·class="p"·data-group-id="5038557481-24">(</span><span·class="n">Log</span><span·class="p">,</span><span·class="w">·</span>[·...·truncated·by·diffoscope;·len:·123,·SHA:·5ac1b138e5e4b8573f1bc6cc5ab56228f487317e4565148715ccb97364761c12·...·]-23">}</span><span·class="p">;</span><span·class="w"> |
| 216 | ················</span><span·class="ss">eof</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 216 | ················</span><span·class="ss">eof</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 217 | ····················</span><span·class="ss">end_of_input</span><span·class="w"> | 217 | ····················</span><span·class="ss">end_of_input</span><span·class="w"> |
| 218 | ············</span><span·class="k">end</span><span·class="w"> | 218 | ············</span><span·class="k">end</span><span·class="w"> |
| 219 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 219 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 220 | </span><span·class="nf">output</span><span·class="p"·data-group-id=" | 220 | </span><span·class="nf">output</span><span·class="p"·data-group-id="5038557481-25">(</span><span·class="n">L</span><span·class="p"·data-group-id="5038557481-25">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 221 | ····</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 221 | ····</span><span·class="nf">fun</span><span·class="p"·data-group-id="5038557481-26">(</span><span·class="ss">close</span><span·class="p"·data-group-id="5038557481-26">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 222 | ············</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id=" | 222 | ············</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id="5038557481-27">(</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">reverse</span><span·class="p"·data-group-id="5038557481-28">(</span><span·class="n">L</span><span·class="p"·data-group-id="5038557481-28">)</span><span·class="p"·d[·...·truncated·by·diffoscope;·len:·24,·SHA:·6754968d44ade8498403fa69287a261a15605d0d4772eba7769658410cb2b34b·...·]-27">)</span><span·class="p">;</span><span·class="w"> |
| 223 | ·······</span><span·class="p"·data-group-id=" | 223 | ·······</span><span·class="p"·data-group-id="5038557481-29">(</span><span·class="n">Terms</span><span·class="p"·data-group-id="5038557481-29">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 224 | ············</span><span·class="nf">output</span><span·class="p"·data-group-id=" | 224 | ············</span><span·class="nf">output</span><span·class="p"·data-group-id="5038557481-30">(</span><span·class="p"·data-group-id="5038557481-31">[</span><span·class="n">Terms</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="n">L</span><span·class="p"·data-group-id="5038557481-31">]</span><[·...·truncated·by·diffoscope;·len:·40,·SHA:·4294ae4ebe816410f816abc5f11fb6dac00b464a0739a8bdf77bbfe9d15254ea·...·]-30">)</span><span·class="w"> |
| 225 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>For·more·examples·of·functions·as·input·and·output,·see·the·end·of·the | 225 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>For·more·examples·of·functions·as·input·and·output,·see·the·end·of·the |
| 226 | <code·class="inline">file_sorter</code>·module;·the·<code·class="inline">term</code>·format·is·implemented·with·functions.</p><p>The·possible·values·of·<code·class="inline">Reason</code>·returned·when·an·error·occurs·are:</p><ul><li><code·class="inline">bad_object</code>,·<code·class="inline">{bad_object,·FileName}</code>·-·Applying·the·format·function·failed | 226 | <code·class="inline">file_sorter</code>·module;·the·<code·class="inline">term</code>·format·is·implemented·with·functions.</p><p>The·possible·values·of·<code·class="inline">Reason</code>·returned·when·an·error·occurs·are:</p><ul><li><code·class="inline">bad_object</code>,·<code·class="inline">{bad_object,·FileName}</code>·-·Applying·the·format·function·failed |
| 227 | for·some·binary,·or·the·key(s)·could·not·be·extracted·from·some·term.</li><li><code·class="inline">{bad_term,·FileName}</code>·-·<a·href="io.html#read/2"><code·class="inline">io:read/2</code></a>·failed·to·read·some·term.</li><li><code·class="inline">{file_error,·FileName,·file:posix()}</code>·-·For·an·explanation·of | 227 | for·some·binary,·or·the·key(s)·could·not·be·extracted·from·some·term.</li><li><code·class="inline">{bad_term,·FileName}</code>·-·<a·href="io.html#read/2"><code·class="inline">io:read/2</code></a>·failed·to·read·some·term.</li><li><code·class="inline">{file_error,·FileName,·file:posix()}</code>·-·For·an·explanation·of |
| 228 | <a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#t:posix/0"><code·class="inline">file:posix()</code></a>,·see·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html"><code·class="inline">file</code></a>.</li><li><code·class="inline">{premature_eof,·FileName}</code>·-·End-of-file·was·encountered·inside·some·binary | 228 | <a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#t:posix/0"><code·class="inline">file:posix()</code></a>,·see·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html"><code·class="inline">file</code></a>.</li><li><code·class="inline">{premature_eof,·FileName}</code>·-·End-of-file·was·encountered·inside·some·binary |
| 229 | term.</li></ul> | 229 | term.</li></ul> |
| 230 | ····</section> | 230 | ····</section> |
| Offset 986, 23 lines modified | Offset 986, 23 lines modified | ||
| 986 | ································Cwd·::·<a·href="#t:filename_all/0">filename_all</a>(), | 986 | ································Cwd·::·<a·href="#t:filename_all/0">filename_all</a>(), |
| 987 | ································SafeFilename·::·<a·href="#t:filename_all/0">filename_all</a>().</pre> | 987 | ································SafeFilename·::·<a·href="#t:filename_all/0">filename_all</a>().</pre> |
| 988 | ······</div> | 988 | ······</div> |
| 989 | <p>Sanitizes·the·relative·path·by·eliminating·".."·and·"."·components·to·protect | 989 | <p>Sanitizes·the·relative·path·by·eliminating·".."·and·"."·components·to·protect |
| 990 | against·directory·traversal·attacks.</p><p>Either·returns·the·sanitized·path·name,·or·the·atom·<code·class="inline">unsafe</code>·if·the·path·is·unsafe. | 990 | against·directory·traversal·attacks.</p><p>Either·returns·the·sanitized·path·name,·or·the·atom·<code·class="inline">unsafe</code>·if·the·path·is·unsafe. |
| 991 | The·path·is·considered·unsafe·in·the·following·circumstances:</p><ul><li>The·path·is·not·relative.</li><li>A·".."·component·would·climb·up·above·the·root·of·the·relative·path.</li><li>A·symbolic·link·in·the·path·points·above·the·root·of·the·relative·path.</li></ul><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="p"·data-group-id="9 | 991 | The·path·is·considered·unsafe·in·the·following·circumstances:</p><ul><li>The·path·is·not·relative.</li><li>A·".."·component·would·climb·up·above·the·root·of·the·relative·path.</li><li>A·symbolic·link·in·the·path·points·above·the·root·of·the·relative·path.</li></ul><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="p"·data-group-id="6920820449-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cwd</span><span·class="p"·data-group-id="6920820449-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·cla[·...·truncated·by·diffoscope;·len:·168,·SHA:·ef28011e6e3c91f629a647f687793256b6be756474029890f15739f2f9798c6b·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 992 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="gp·unselectable"> | 992 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="gp·unselectable"> |
| 993 | 2>·</span><span·class="nc">filelib</span><span·class="p">:</span><span·class="nf">safe_relative_path</span><span·class="p"·data-group-id="9 | 993 | 2>·</span><span·class="nc">filelib</span><span·class="p">:</span><span·class="nf">safe_relative_path</span><span·class="p"·data-group-id="6920820449-3">(</span><span·class="s">"dir/sub_dir/.."</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cwd</span><span·class="p"·data-group-id="6920820449-3">)</span><span·class="p">.</span><span·class="w"> |
| 994 | </span><span·class="s">"dir"</span><span·class="gp·unselectable"> | 994 | </span><span·class="s">"dir"</span><span·class="gp·unselectable"> |
| 995 | 3>·</span><span·class="nc">filelib</span><span·class="p">:</span><span·class="nf">safe_relative_path</span><span·class="p"·data-group-id="9 | 995 | 3>·</span><span·class="nc">filelib</span><span·class="p">:</span><span·class="nf">safe_relative_path</span><span·class="p"·data-group-id="6920820449-4">(</span><span·class="s">"dir/.."</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cwd</span><span·class="p"·data-group-id="6920820449-4">)</span><span·class="p">.</span><span·class="w"> |
| 996 | </span><span·class="p"·data-group-id="9 | 996 | </span><span·class="p"·data-group-id="6920820449-5">[</span><span·class="p"·data-group-id="6920820449-5">]</span><span·class="gp·unselectable"> |
| 997 | 4>·</span><span·class="nc">filelib</span><span·class="p">:</span><span·class="nf">safe_relative_path</span><span·class="p"·data-group-id="9 | 997 | 4>·</span><span·class="nc">filelib</span><span·class="p">:</span><span·class="nf">safe_relative_path</span><span·class="p"·data-group-id="6920820449-6">(</span><span·class="s">"dir/../.."</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cwd</span><span·class="p"·data-group-id="6920820449-6">)</span><span·class="p">.</span><span·class="w"> |
| 998 | </span><span·class="ss">unsafe</span><span·class="gp·unselectable"> | 998 | </span><span·class="ss">unsafe</span><span·class="gp·unselectable"> |
| 999 | 5>·</span><span·class="nc">filelib</span><span·class="p">:</span><span·class="nf">safe_relative_path</span><span·class="p"·data-group-id="9 | 999 | 5>·</span><span·class="nc">filelib</span><span·class="p">:</span><span·class="nf">safe_relative_path</span><span·class="p"·data-group-id="6920820449-7">(</span><span·class="s">"/abs/path"</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Cwd</span><span·class="p"·data-group-id="6920820449-7">)</span><span·class="p">.</span><span·class="w"> |
| 1000 | </span><span·class="ss">unsafe</span></code></pre> | 1000 | </span><span·class="ss">unsafe</span></code></pre> |
| 1001 | ··</section> | 1001 | ··</section> |
| 1002 | </section> | 1002 | </section> |
| 1003 | <section·class="detail"·id="wildcard/1"> | 1003 | <section·class="detail"·id="wildcard/1"> |
| 1004 | ··<div·class="detail-header"> | 1004 | ··<div·class="detail-header"> |
| 1005 | ····<a·href="#wildcard/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1005 | ····<a·href="#wildcard/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 514, 28 lines modified | Offset 514, 28 lines modified | ||
| 514 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·absname(Filename)·->·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#t:filename_all/0">file:filename_all</a>()·when·Filename·::·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#t:name_all/0">file:name_all</a>().</pre> | 514 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·absname(Filename)·->·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#t:filename_all/0">file:filename_all</a>()·when·Filename·::·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#t:name_all/0">file:name_all</a>().</pre> |
| 515 | ······</div> | 515 | ······</div> |
| 516 | <p>Converts·a·relative·<code·class="inline">Filename</code>·and·returns·an·absolute·name.·No·attempt·is·made | 516 | <p>Converts·a·relative·<code·class="inline">Filename</code>·and·returns·an·absolute·name.·No·attempt·is·made |
| 517 | to·create·the·shortest·absolute·name,·as·this·can·give·incorrect·results·on·file | 517 | to·create·the·shortest·absolute·name,·as·this·can·give·incorrect·results·on·file |
| 518 | systems·that·allow·links.</p><p><em>Unix·examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nf">pwd</span><span·class="p"·data-group-id=" | 518 | systems·that·allow·links.</p><p><em>Unix·examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nf">pwd</span><span·class="p"·data-group-id="8396523184-1">(</span><span·class="p"·data-group-id="8396523184-1">)</span><span·class="p">.</span><span·class="w"> |
| 519 | </span><span·class="s">"/usr/local"</span><span·class="gp·unselectable"> | 519 | </span><span·class="s">"/usr/local"</span><span·class="gp·unselectable"> |
| 520 | 2>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">absname</span><span·class="p"·data-group-id=" | 520 | 2>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">absname</span><span·class="p"·data-group-id="8396523184-2">(</span><span·class="s">"foo"</span><span·class="p"·data-group-id="8396523184-2">)</span><span·class="p">.</span><span·class="w"> |
| 521 | </span><span·class="s">"/usr/local/foo"</span><span·class="gp·unselectable"> | 521 | </span><span·class="s">"/usr/local/foo"</span><span·class="gp·unselectable"> |
| 522 | 3>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">absname</span><span·class="p"·data-group-id=" | 522 | 3>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">absname</span><span·class="p"·data-group-id="8396523184-3">(</span><span·class="s">"../x"</span><span·class="p"·data-group-id="8396523184-3">)</span><span·class="p">.</span><span·class="w"> |
| 523 | </span><span·class="s">"/usr/local/../x"</span><span·class="gp·unselectable"> | 523 | </span><span·class="s">"/usr/local/../x"</span><span·class="gp·unselectable"> |
| 524 | 4>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">absname</span><span·class="p"·data-group-id=" | 524 | 4>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">absname</span><span·class="p"·data-group-id="8396523184-4">(</span><span·class="s">"/"</span><span·class="p"·data-group-id="8396523184-4">)</span><span·class="p">.</span><span·class="w"> |
| 525 | </span><span·class="s">"/"</span></code></pre><p><em>Windows·examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nf">pwd</span><span·class="p"·data-group-id=" | 525 | </span><span·class="s">"/"</span></code></pre><p><em>Windows·examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nf">pwd</span><span·class="p"·data-group-id="5865535215-1">(</span><span·class="p"·data-group-id="5865535215-1">)</span><span·class="p">.</span><span·class="w"> |
| 526 | </span><span·class="s">"D:/usr/local"</span><span·class="gp·unselectable"> | 526 | </span><span·class="s">"D:/usr/local"</span><span·class="gp·unselectable"> |
| 527 | 2>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">absname</span><span·class="p"·data-group-id=" | 527 | 2>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">absname</span><span·class="p"·data-group-id="5865535215-2">(</span><span·class="s">"foo"</span><span·class="p"·data-group-id="5865535215-2">)</span><span·class="p">.</span><span·class="w"> |
| 528 | </span><span·class="s">"D:/usr/local/foo"</span><span·class="gp·unselectable"> | 528 | </span><span·class="s">"D:/usr/local/foo"</span><span·class="gp·unselectable"> |
| 529 | 3>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">absname</span><span·class="p"·data-group-id=" | 529 | 3>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">absname</span><span·class="p"·data-group-id="5865535215-3">(</span><span·class="s">"../x"</span><span·class="p"·data-group-id="5865535215-3">)</span><span·class="p">.</span><span·class="w"> |
| 530 | </span><span·class="s">"D:/usr/local/../x"</span><span·class="gp·unselectable"> | 530 | </span><span·class="s">"D:/usr/local/../x"</span><span·class="gp·unselectable"> |
| 531 | 4>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">absname</span><span·class="p"·data-group-id=" | 531 | 4>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">absname</span><span·class="p"·data-group-id="5865535215-4">(</span><span·class="s">"/"</span><span·class="p"·data-group-id="5865535215-4">)</span><span·class="p">.</span><span·class="w"> |
| 532 | </span><span·class="s">"D:/"</span></code></pre> | 532 | </span><span·class="s">"D:/"</span></code></pre> |
| 533 | ··</section> | 533 | ··</section> |
| 534 | </section> | 534 | </section> |
| 535 | <section·class="detail"·id="absname/2"> | 535 | <section·class="detail"·id="absname/2"> |
| 536 | ··<div·class="detail-header"> | 536 | ··<div·class="detail-header"> |
| 537 | ····<a·href="#absname/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 537 | ····<a·href="#absname/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 659, 66 lines modified | Offset 659, 66 lines modified | ||
| 659 | ······</div> | 659 | ······</div> |
| 660 | <p><a·href=""·id="basedir_3_1"></a>·<a·href=""·id="basedir_3_2"></a></p><p>Returns·a·suitable·path,·or·paths,·for·a·given·type.·If·<code·class="inline">os</code>·is·not·set·in | 660 | <p><a·href=""·id="basedir_3_1"></a>·<a·href=""·id="basedir_3_2"></a></p><p>Returns·a·suitable·path,·or·paths,·for·a·given·type.·If·<code·class="inline">os</code>·is·not·set·in |
| 661 | <code·class="inline">Opts</code>·the·function·will·default·to·the·native·option,·that·is·<code·class="inline">'linux'</code>, | 661 | <code·class="inline">Opts</code>·the·function·will·default·to·the·native·option,·that·is·<code·class="inline">'linux'</code>, |
| 662 | <code·class="inline">'darwin'</code>·or·<code·class="inline">'windows'</code>,·as·understood·by·<a·href="../../../../lib/kernel-10.2.3/doc/html/os.html#type/0"><code·class="inline">os:type/0</code></a>.·Anything·not·recognized | 662 | <code·class="inline">'darwin'</code>·or·<code·class="inline">'windows'</code>,·as·understood·by·<a·href="../../../../lib/kernel-10.2.3/doc/html/os.html#type/0"><code·class="inline">os:type/0</code></a>.·Anything·not·recognized |
| 663 | as·<code·class="inline">'darwin'</code>·or·<code·class="inline">'windows'</code>·is·interpreted·as·<code·class="inline">'linux'</code>.</p><p>The·options·<code·class="inline">'author'</code>·and·<code·class="inline">'version'</code>·are·only·used·with·<code·class="inline">'windows'</code>·option | 663 | as·<code·class="inline">'darwin'</code>·or·<code·class="inline">'windows'</code>·is·interpreted·as·<code·class="inline">'linux'</code>.</p><p>The·options·<code·class="inline">'author'</code>·and·<code·class="inline">'version'</code>·are·only·used·with·<code·class="inline">'windows'</code>·option |
| 664 | mode.</p><ul><li><p><code·class="inline"·id="user_cache">user_cache</code></p><p>The·path·location·is·intended·for·transient·data·files·on·a·local·machine.</p><p>On·Linux:·Respects·the·os·environment·variable·<code·class="inline">XDG_CACHE_HOME</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id=" | 664 | mode.</p><ul><li><p><code·class="inline"·id="user_cache">user_cache</code></p><p>The·path·location·is·intended·for·transient·data·files·on·a·local·machine.</p><p>On·Linux:·Respects·the·os·environment·variable·<code·class="inline">XDG_CACHE_HOME</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id="9043351173-1">(</span><span·class="ss">user_cache</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"my_application"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9043351173-2">#{</span><[·...·truncated·by·diffoscope;·len:·176,·SHA:·bbedc0f137e92247898082ab511f10ff9833bb509a9472e8d463682a8a7c7e1a·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 665 | </span><span·class="s">"/home/otptest/.cache/my_application"</span></code></pre><p>On·Darwin:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id=" | 665 | </span><span·class="s">"/home/otptest/.cache/my_application"</span></code></pre><p>On·Darwin:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id="2809802807-1">(</span><span·class="ss">user_cache</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"my_application"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2809802807-2">#{</span><[·...·truncated·by·diffoscope;·len:·177,·SHA:·35712af79fd25cc13230882da2683dab41723e8c63b5b2efb7954e5b23183be9·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 666 | </span><span·class="s">"/home/otptest/Library/Caches/my_application"</span></code></pre><p>On·Windows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id=" | 666 | </span><span·class="s">"/home/otptest/Library/Caches/my_application"</span></code></pre><p>On·Windows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id="4091789821-1">(</span><span·class="ss">user_cache</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"My·App"</span><span·class="p"·data-group-id="4091789821-1">)</span><span·class="p">.</span><span·class="w"> |
| 667 | </span><span·class="s">"c:/Users/otptest/AppData/Local/My·App/Cache"</span><span·class="gp·unselectable"> | 667 | </span><span·class="s">"c:/Users/otptest/AppData/Local/My·App/Cache"</span><span·class="gp·unselectable"> |
| 668 | 2>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id=" | 668 | 2>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id="4091789821-2">(</span><span·class="ss">user_cache</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"My·App"</span><span·class="p"·data-group-id="4091789821-2">)</span><span·class="p">.</span><span·class="w"> |
| 669 | </span><span·class="s">"c:/Users/otptest/AppData/Local/My·App/Cache"</span><span·class="gp·unselectable"> | 669 | </span><span·class="s">"c:/Users/otptest/AppData/Local/My·App/Cache"</span><span·class="gp·unselectable"> |
| 670 | 3>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id=" | 670 | 3>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id="4091789821-3">(</span><span·class="ss">user_cache</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"My·App"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4091789821-4">#{</span><span·cla[·...·truncated·by·diffoscope;·len:·183,·SHA:·fc82f2bbe9b364d8a00502cdbd58032867b2b7208ccfbe93d3805e1b176ac90c·...·]1-3">)</span><span·class="p">.</span><span·class="w"> |
| 671 | </span><span·class="s">"c:/Users/otptest/AppData/Local/Erlang/My·App/Cache"</span><span·class="gp·unselectable"> | 671 | </span><span·class="s">"c:/Users/otptest/AppData/Local/Erlang/My·App/Cache"</span><span·class="gp·unselectable"> |
| 672 | 4>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id=" | 672 | 4>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id="4091789821-5">(</span><span·class="ss">user_cache</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"My·App"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4091789821-6">#{</span><span·cla[·...·truncated·by·diffoscope;·len:·181,·SHA:·325a4907de280d9e354bced8668b75c8e46a8872283f1e3fb0de46f1a650536b·...·]1-5">)</span><span·class="p">.</span><span·class="w"> |
| 673 | </span><span·class="s">"c:/Users/otptest/AppData/Local/My·App/1.2/Cache"</span><span·class="gp·unselectable"> | 673 | </span><span·class="s">"c:/Users/otptest/AppData/Local/My·App/1.2/Cache"</span><span·class="gp·unselectable"> |
| 674 | 5>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id=" | 674 | 5>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id="4091789821-7">(</span><span·class="ss">user_cache</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"My·App"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4091789821-8">#{</span><span·cla[·...·truncated·by·diffoscope;·len:·304,·SHA:·a3b6d2a05069be9ea6a7a18b556e17d93d59147e8abf25716624f37bd50e6e34·...·]1-7">)</span><span·class="p">.</span><span·class="w"> |
| 675 | </span><span·class="s">"c:/Users/otptest/AppData/Local/Erlang/My·App/1.2/Cache"</span></code></pre></li><li><p><code·class="inline"·id="user_config">user_config</code></p><p>The·path·location·is·intended·for·persistent·configuration·files.</p><p>On·Linux:·Respects·the·os·environment·variable·<code·class="inline">XDG_CONFIG_HOME</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id=" | 675 | </span><span·class="s">"c:/Users/otptest/AppData/Local/Erlang/My·App/1.2/Cache"</span></code></pre></li><li><p><code·class="inline"·id="user_config">user_config</code></p><p>The·path·location·is·intended·for·persistent·configuration·files.</p><p>On·Linux:·Respects·the·os·environment·variable·<code·class="inline">XDG_CONFIG_HOME</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id="4347087585-1">(</span><span·class="ss">user_config</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"my_application"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4347087585-2">#{</span>[·...·truncated·by·diffoscope;·len:·177,·SHA:·a475c972dd221ad07c06d8fe1b52a22a144025ed593da4b3a071b4e490029dbb·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 676 | </span><span·class="s">"/home/otptest/.config/my_application"</span></code></pre><p>On·Darwin:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id=" | 676 | </span><span·class="s">"/home/otptest/.config/my_application"</span></code></pre><p>On·Darwin:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id="3763511572-1">(</span><span·class="ss">user_config</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"my_application"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3763511572-2">#{</span>[·...·truncated·by·diffoscope;·len:·178,·SHA:·a3fc7d8b75a411fe1bddfe01481a726cb20ae04ae75320bb55fdf5a00ff1f1d3·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 677 | </span><span·class="s">"/home/otptest/Library/Application·Support/my_application"</span></code></pre><p>On·Windows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id=" | 677 | </span><span·class="s">"/home/otptest/Library/Application·Support/my_application"</span></code></pre><p>On·Windows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id="3790659228-1">(</span><span·class="ss">user_config</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"My·App"</span><span·class="p"·data-group-id="3790659228-1">)</span><span·class="p">.</span><span·class="w"> |
| 678 | </span><span·class="s">"c:/Users/otptest/AppData/Roaming/My·App"</span><span·class="gp·unselectable"> | 678 | </span><span·class="s">"c:/Users/otptest/AppData/Roaming/My·App"</span><span·class="gp·unselectable"> |
| 679 | 2>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id=" | 679 | 2>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id="3790659228-2">(</span><span·class="ss">user_config</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"My·App"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3790659228-3">#{</span><span·cl[·...·truncated·by·diffoscope;·len:·330,·SHA:·ebcf3a3519f2eaedf6d46f747ae05abaf65105bafeb556f0245c1a7205ebe930·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 680 | </span><span·class="s">"c:/Users/otptest/AppData/Roaming/Erlang/My·App/1.2"</span></code></pre></li><li><p><code·class="inline"·id="user_data">user_data</code></p><p>The·path·location·is·intended·for·persistent·data·files.</p><p>On·Linux:·Respects·the·os·environment·variable·<code·class="inline">XDG_DATA_HOME</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id=" | 680 | </span><span·class="s">"c:/Users/otptest/AppData/Roaming/Erlang/My·App/1.2"</span></code></pre></li><li><p><code·class="inline"·id="user_data">user_data</code></p><p>The·path·location·is·intended·for·persistent·data·files.</p><p>On·Linux:·Respects·the·os·environment·variable·<code·class="inline">XDG_DATA_HOME</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id="3330350581-1">(</span><span·class="ss">user_data</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"my_application"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3330350581-2">#{</span><s[·...·truncated·by·diffoscope;·len:·175,·SHA:·5e86dc216dceb7c26b29ad6deeab097e8f8e179624bcd723927cc34a3aa724df·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 681 | </span><span·class="s">"/home/otptest/.local/my_application"</span></code></pre><p>On·Darwin:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id=" | 681 | </span><span·class="s">"/home/otptest/.local/my_application"</span></code></pre><p>On·Darwin:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id="8571788299-1">(</span><span·class="ss">user_data</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"my_application"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8571788299-2">#{</span><s[·...·truncated·by·diffoscope;·len:·176,·SHA:·8fa74655b8022e51d0b53e9f47df1616367757a5dbd337ccde958a3c29701161·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 682 | </span><span·class="s">"/home/otptest/Library/Application·Support/my_application"</span></code></pre><p>On·Windows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">8>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id=" | 682 | </span><span·class="s">"/home/otptest/Library/Application·Support/my_application"</span></code></pre><p>On·Windows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">8>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id="2062989795-1">(</span><span·class="ss">user_data</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"My·App"</span><span·class="p"·data-group-id="2062989795-1">)</span><span·class="p">.</span><span·class="w"> |
| 683 | </span><span·class="s">"c:/Users/otptest/AppData/Local/My·App"</span><span·class="gp·unselectable"> | 683 | </span><span·class="s">"c:/Users/otptest/AppData/Local/My·App"</span><span·class="gp·unselectable"> |
| 684 | 9>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id=" | 684 | 9>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id="2062989795-2">(</span><span·class="ss">user_data</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"My·App"</span><span·class="p">,</span><span·class="p"·data-group-id="2062989795-3">#{</span><span·class="ss">author</span><spa[·...·truncated·by·diffoscope;·len:·280,·SHA:·99eaab058f5e41e7093e0d6b34debbc6ead5c1ed44d5943353a353482f9d086b·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 685 | </span><span·class="s">"c:/Users/otptest/AppData/Local/Erlang/My·App/1.2"</span></code></pre></li><li><p><code·class="inline"·id="user_log">user_log</code></p><p>The·path·location·is·intended·for·transient·log·files·on·a·local·machine.</p><p>On·Linux:·Respects·the·os·environment·variable·<code·class="inline">XDG_CACHE_HOME</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">4>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id=" | 685 | </span><span·class="s">"c:/Users/otptest/AppData/Local/Erlang/My·App/1.2"</span></code></pre></li><li><p><code·class="inline"·id="user_log">user_log</code></p><p>The·path·location·is·intended·for·transient·log·files·on·a·local·machine.</p><p>On·Linux:·Respects·the·os·environment·variable·<code·class="inline">XDG_CACHE_HOME</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">4>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id="5398516883-1">(</span><span·class="ss">user_log</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"my_application"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5398516883-2">#{</span><sp[·...·truncated·by·diffoscope;·len:·174,·SHA:·27e78719d166bc40207de475445bf9ec423f8184ddda18d50958fda59205cfc7·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 686 | </span><span·class="s">"/home/otptest/.cache/my_application/log"</span></code></pre><p>On·Darwin:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">4>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id=" | 686 | </span><span·class="s">"/home/otptest/.cache/my_application/log"</span></code></pre><p>On·Darwin:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">4>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id="7352434473-1">(</span><span·class="ss">user_log</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"my_application"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7352434473-2">#{</span><sp[·...·truncated·by·diffoscope;·len:·175,·SHA:·4f22c1af90b1ab175d183ea8cd660ada5eb1cd3dcadc7140b29af116916e6c9b·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 687 | </span><span·class="s">"/home/otptest/Library/Logs/my_application"</span></code></pre><p>On·Windows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">12>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id=" | 687 | </span><span·class="s">"/home/otptest/Library/Logs/my_application"</span></code></pre><p>On·Windows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">12>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id="5829920254-1">(</span><span·class="ss">user_log</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"My·App"</span><span·class="p"·data-group-id="5829920254-1">)</span><span·class="p">.</span><span·class="w"> |
| 688 | </span><span·class="s">"c:/Users/otptest/AppData/Local/My·App/Logs"</span><span·class="gp·unselectable"> | 688 | </span><span·class="s">"c:/Users/otptest/AppData/Local/My·App/Logs"</span><span·class="gp·unselectable"> |
| 689 | 13>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id=" | 689 | 13>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id="5829920254-2">(</span><span·class="ss">user_log</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"My·App"</span><span·class="p">,</span><span·class="p"·data-group-id="5829920254-3">#{</span><span·class="ss">author</span><span[·...·truncated·by·diffoscope;·len:·279,·SHA:·9faf31b3ec9e109e1451d95a4b7c0937c84f71f7e9fdc0af6982336c56a48c47·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 690 | </span><span·class="s">"c:/Users/otptest/AppData/Local/Erlang/My·App/1.2/Logs"</span></code></pre></li><li><p><code·class="inline"·id="site_config">site_config</code></p><p>On·Linux:·Respects·the·os·environment·variable·<code·class="inline">XDG_CONFIG_DIRS</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">5>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id=" | 690 | </span><span·class="s">"c:/Users/otptest/AppData/Local/Erlang/My·App/1.2/Logs"</span></code></pre></li><li><p><code·class="inline"·id="site_config">site_config</code></p><p>On·Linux:·Respects·the·os·environment·variable·<code·class="inline">XDG_CONFIG_DIRS</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">5>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id="6820718182-1">(</span><span·class="ss">site_config</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"my_application"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6820718182-2">#{</span>[·...·truncated·by·diffoscope;·len:·177,·SHA:·5d6196846449bfb3353ecba0db19d5f7c7056dd0ac870a3431ba014bac43c18f·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 691 | </span><span·class="p"·data-group-id=" | 691 | </span><span·class="p"·data-group-id="6820718182-3">[</span><span·class="s">"/usr/local/share/my_application"</span><span·class="p">,</span><span·class="w"> |
| 692 | ·</span><span·class="s">"/usr/share/my_application"</span><span·class="p"·data-group-id=" | 692 | ·</span><span·class="s">"/usr/share/my_application"</span><span·class="p"·data-group-id="6820718182-3">]</span><span·class="gp·unselectable"> |
| 693 | 6>·</span><span·class="nc">os</span><span·class="p">:</span><span·class="nf">getenv</span><span·class="p"·data-group-id=" | 693 | 6>·</span><span·class="nc">os</span><span·class="p">:</span><span·class="nf">getenv</span><span·class="p"·data-group-id="6820718182-4">(</span><span·class="s">"XDG_CONFIG_DIRS"</span><span·class="p"·data-group-id="6820718182-4">)</span><span·class="p">.</span><span·class="w"> |
| 694 | </span><span·class="s">"/etc/xdg/xdg-ubuntu:/usr/share/upstart/xdg:/etc/xdg"</span><span·class="gp·unselectable"> | 694 | </span><span·class="s">"/etc/xdg/xdg-ubuntu:/usr/share/upstart/xdg:/etc/xdg"</span><span·class="gp·unselectable"> |
| 695 | 7>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id=" | 695 | 7>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id="6820718182-5">(</span><span·class="ss">site_config</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"my_application"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6820718182-6">#{</span>[·...·truncated·by·diffoscope;·len:·177,·SHA:·69be88bbc02a3218b3a7b6bc7753538f49bdff92e6add4693cf46be8a6ed3533·...·]-5">)</span><span·class="p">.</span><span·class="w"> |
| 696 | </span><span·class="p"·data-group-id=" | 696 | </span><span·class="p"·data-group-id="6820718182-7">[</span><span·class="s">"/etc/xdg/xdg-ubuntu/my_application"</span><span·class="p">,</span><span·class="w"> |
| 697 | ·</span><span·class="s">"/usr/share/upstart/xdg/my_application"</span><span·class="p">,</span><span·class="w"> | 697 | ·</span><span·class="s">"/usr/share/upstart/xdg/my_application"</span><span·class="p">,</span><span·class="w"> |
| 698 | ·</span><span·class="s">"/etc/xdg/my_application"</span><span·class="p"·data-group-id=" | 698 | ·</span><span·class="s">"/etc/xdg/my_application"</span><span·class="p"·data-group-id="6820718182-7">]</span><span·class="gp·unselectable"> |
| 699 | 8>·</span><span·class="nc">os</span><span·class="p">:</span><span·class="nf">unsetenv</span><span·class="p"·data-group-id=" | 699 | 8>·</span><span·class="nc">os</span><span·class="p">:</span><span·class="nf">unsetenv</span><span·class="p"·data-group-id="6820718182-8">(</span><span·class="s">"XDG_CONFIG_DIRS"</span><span·class="p"·data-group-id="6820718182-8">)</span><span·class="p">.</span><span·class="w"> |
| 700 | </span><span·class="ss">true</span><span·class="gp·unselectable"> | 700 | </span><span·class="ss">true</span><span·class="gp·unselectable"> |
| 701 | 9>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id=" | 701 | 9>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id="6820718182-9">(</span><span·class="ss">site_config</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"my_application"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6820718182-10">#{</span[·...·truncated·by·diffoscope;·len:·179,·SHA:·f37eccccdc1c4acc118352c30b276aae2135df87f14112292ef210cef03081b4·...·]-9">)</span><span·class="p">.</span><span·class="w"> |
| 702 | </span><span·class="p"·data-group-id=" | 702 | </span><span·class="p"·data-group-id="6820718182-11">[</span><span·class="s">"/etc/xdg/my_application"</span><span·class="p"·data-group-id="6820718182-11">]</span></code></pre><p>On·Darwin:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">5>·</span>[·...·truncated·by·diffoscope;·len:·552,·SHA:·093f5dcc38fdd98ed1a2881128e328c4d514fad4ff64a42dab6c1794965eb0c5·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 703 | </span><span·class="p"·data-group-id=" | 703 | </span><span·class="p"·data-group-id="2994911756-3">[</span><span·class="s">"/Library/Application·Support/my_application"</span><span·class="p"·data-group-id="2994911756-3">]</span></code></pre></li><li><p><code·class="inline"·id="site_data">site_data</code></p><p>On·Linux:·Respects·[·...·truncated·by·diffoscope;·len:·388,·SHA:·6b8080cb1d1aa0fc242d403bf00b8bfd30376029634bb7438a54ff56d5d81b72·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 704 | </span><span·class="s">"/usr/share/ubuntu:/usr/share/gnome:/usr/local/share/:/usr/share/"</span><span·class="gp·unselectable"> | 704 | </span><span·class="s">"/usr/share/ubuntu:/usr/share/gnome:/usr/local/share/:/usr/share/"</span><span·class="gp·unselectable"> |
| 705 | 11>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id=" | 705 | 11>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id="8673074853-2">(</span><span·class="ss">site_data</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"my_application"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8673074853-3">#{</span><s[·...·truncated·by·diffoscope;·len:·175,·SHA:·25ea7fad80eb6c969122d9bd994f1a93adcfa6e971aed93fc116854054f56c44·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 706 | </span><span·class="p"·data-group-id=" | 706 | </span><span·class="p"·data-group-id="8673074853-4">[</span><span·class="s">"/usr/share/ubuntu/my_application"</span><span·class="p">,</span><span·class="w"> |
| 707 | ·</span><span·class="s">"/usr/share/gnome/my_application"</span><span·class="p">,</span><span·class="w"> | 707 | ·</span><span·class="s">"/usr/share/gnome/my_application"</span><span·class="p">,</span><span·class="w"> |
| 708 | ·</span><span·class="s">"/usr/local/share/my_application"</span><span·class="p">,</span><span·class="w"> | 708 | ·</span><span·class="s">"/usr/local/share/my_application"</span><span·class="p">,</span><span·class="w"> |
| 709 | ·</span><span·class="s">"/usr/share/my_application"</span><span·class="p"·data-group-id=" | 709 | ·</span><span·class="s">"/usr/share/my_application"</span><span·class="p"·data-group-id="8673074853-4">]</span><span·class="gp·unselectable"> |
| 710 | 12>·</span><span·class="nc">os</span><span·class="p">:</span><span·class="nf">unsetenv</span><span·class="p"·data-group-id=" | 710 | 12>·</span><span·class="nc">os</span><span·class="p">:</span><span·class="nf">unsetenv</span><span·class="p"·data-group-id="8673074853-5">(</span><span·class="s">"XDG_DATA_DIRS"</span><span·class="p"·data-group-id="8673074853-5">)</span><span·class="p">.</span><span·class="w"> |
| 711 | </span><span·class="ss">true</span><span·class="gp·unselectable"> | 711 | </span><span·class="ss">true</span><span·class="gp·unselectable"> |
| 712 | 13>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id=" | 712 | 13>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group-id="8673074853-6">(</span><span·class="ss">site_data</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"my_application"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8673074853-7">#{</span><s[·...·truncated·by·diffoscope;·len:·175,·SHA:·faad23e08694cc25dd9c3686b326dc194537f4b55e552e6b1ed522cddd1a9ad5·...·]-6">)</span><span·class="p">.</span><span·class="w"> |
| 713 | </span><span·class="p"·data-group-id=" | 713 | </span><span·class="p"·data-group-id="8673074853-8">[</span><span·class="s">"/usr/local/share/my_application"</span><span·class="p">,</span><span·class="w"> |
| 714 | ·</span><span·class="s">"/usr/share/my_application"</span><span·class="p"·data-group-id=" | 714 | ·</span><span·class="s">"/usr/share/my_application"</span><span·class="p"·data-group-id="8673074853-8">]</span></code></pre><p>On·Darwin:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">5>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basedir</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·437,·SHA:·cf057c60d31413f77f5ea2e5913e6bf44c1503e2899c3c25a13b0bba69aabca4·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 715 | </span><span·class="p"·data-group-id=" | 715 | </span><span·class="p"·data-group-id="0256369063-3">[</span><span·class="s">"/Library/Application·Support/my_application"</span><span·class="p"·data-group-id="0256369063-3">]</span></code></pre></li></ul> |
| 716 | ··</section> | 716 | ··</section> |
| 717 | </section> | 717 | </section> |
| 718 | <section·class="detail"·id="basename/1"> | 718 | <section·class="detail"·id="basename/1"> |
| 719 | ··<div·class="detail-header"> | 719 | ··<div·class="detail-header"> |
| 720 | ····<a·href="#basename/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 720 | ····<a·href="#basename/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 721 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 721 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 737, 20 lines modified | Offset 737, 20 lines modified | ||
| 737 | ······<div·class="specs"> | 737 | ······<div·class="specs"> |
| 738 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·basename(Filename)·->·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#t:filename_all/0">file:filename_all</a>()·when·Filename·::·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#t:name_all/0">file:name_all</a>().</pre> | 738 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·basename(Filename)·->·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#t:filename_all/0">file:filename_all</a>()·when·Filename·::·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#t:name_all/0">file:name_all</a>().</pre> |
| 739 | ······</div> | 739 | ······</div> |
| 740 | <p>Returns·the·last·component·of·<code·class="inline">Filename</code>,·or·<code·class="inline">Filename</code>·itself·if·it·does·not | 740 | <p>Returns·the·last·component·of·<code·class="inline">Filename</code>,·or·<code·class="inline">Filename</code>·itself·if·it·does·not |
| 741 | contain·any·directory·separators.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">5>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basename</span><span·class="p"·data-group-id=" | 741 | contain·any·directory·separators.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">5>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basename</span><span·class="p"·data-group-id="1061925119-1">(</span><span·class="s">"foo"</span><span·class="p"·data-group-id="1061925119-1">)</span><span·class="p">.</span><span·class="w"> |
| 742 | </span><span·class="s">"foo"</span><span·class="gp·unselectable"> | 742 | </span><span·class="s">"foo"</span><span·class="gp·unselectable"> |
| 743 | 6>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basename</span><span·class="p"·data-group-id=" | 743 | 6>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basename</span><span·class="p"·data-group-id="1061925119-2">(</span><span·class="s">"/usr/foo"</span><span·class="p"·data-group-id="1061925119-2">)</span><span·class="p">.</span><span·class="w"> |
| 744 | </span><span·class="s">"foo"</span><span·class="gp·unselectable"> | 744 | </span><span·class="s">"foo"</span><span·class="gp·unselectable"> |
| 745 | 7>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basename</span><span·class="p"·data-group-id=" | 745 | 7>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basename</span><span·class="p"·data-group-id="1061925119-3">(</span><span·class="s">"/"</span><span·class="p"·data-group-id="1061925119-3">)</span><span·class="p">.</span><span·class="w"> |
| 746 | </span><span·class="p"·data-group-id=" | 746 | </span><span·class="p"·data-group-id="1061925119-4">[</span><span·class="p"·data-group-id="1061925119-4">]</span></code></pre> |
| 747 | ··</section> | 747 | ··</section> |
| 748 | </section> | 748 | </section> |
| 749 | <section·class="detail"·id="basename/2"> | 749 | <section·class="detail"·id="basename/2"> |
| 750 | ··<div·class="detail-header"> | 750 | ··<div·class="detail-header"> |
| 751 | ····<a·href="#basename/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 751 | ····<a·href="#basename/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 752 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 752 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 771 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·basename(Filename,·Ext)·->·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#t:filename_all/0">file:filename_all</a>() | 771 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·basename(Filename,·Ext)·->·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#t:filename_all/0">file:filename_all</a>() |
| 772 | ··················when·Filename·::·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#t:name_all/0">file:name_all</a>(),·Ext·::·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#t:name_all/0">file:name_all</a>().</pre> | 772 | ··················when·Filename·::·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#t:name_all/0">file:name_all</a>(),·Ext·::·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#t:name_all/0">file:name_all</a>().</pre> |
| 773 | ······</div> | 773 | ······</div> |
| 774 | <p>Returns·the·last·component·of·<code·class="inline">Filename</code>·with·extension·<code·class="inline">Ext</code>·stripped.</p><p>This·function·is·to·be·used·to·remove·a·(possible)·specific·extension. | 774 | <p>Returns·the·last·component·of·<code·class="inline">Filename</code>·with·extension·<code·class="inline">Ext</code>·stripped.</p><p>This·function·is·to·be·used·to·remove·a·(possible)·specific·extension. |
| 775 | To·remove·an·existing·extension·when·you·are·unsure·which·one·it·is,·use | 775 | To·remove·an·existing·extension·when·you·are·unsure·which·one·it·is,·use |
| 776 | <a·href="#rootname/1"><code·class="inline">rootname(basename(Filename))</code></a>.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">8>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basename</span><span·class="p"·data-group-id=" | 776 | <a·href="#rootname/1"><code·class="inline">rootname(basename(Filename))</code></a>.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">8>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basename</span><span·class="p"·data-group-id="3361466562-1">(</span><span·class="s">"~/src/kalle.erl"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">".erl"</span><span·class="p"·data-group-id="3361466562-1">)</span><span·class="p">.</span><span·class="w"> |
| 777 | </span><span·class="s">"kalle"</span><span·class="gp·unselectable"> | 777 | </span><span·class="s">"kalle"</span><span·class="gp·unselectable"> |
| 778 | 9>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basename</span><span·class="p"·data-group-id=" | 778 | 9>·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">basename</span><span·class="p"·data-group-id="3361466562-2">(</span><span·class="s">"~/src/kalle.beam"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">".erl"</span><span·class="p"·data-group-id="3361466562-2">)</span><span·class="p">.</span><span·class="w"> |
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| 1267 | format/limit·the·server·state·for·debugging·and·logging·purposes.</p><p>It·is·called·in·the·following·situations:</p><ul><li><p>One·of·<a·href="sys.html#get_status/1"><code·class="inline">sys:get_status/1,2</code></a>·is·invoked | 1267 | format/limit·the·server·state·for·debugging·and·logging·purposes.</p><p>It·is·called·in·the·following·situations:</p><ul><li><p>One·of·<a·href="sys.html#get_status/1"><code·class="inline">sys:get_status/1,2</code></a>·is·invoked |
| 1268 | to·get·the·<code·class="inline">gen_event</code>·status.</p></li><li><p>The·event·handler·terminates·abnormally·and·<code·class="inline">gen_event</code>·logs·an·error.</p></li></ul><p>This·callback·is·used·to·limit·the·status·of·the·event·handler·returned·by | 1268 | to·get·the·<code·class="inline">gen_event</code>·status.</p></li><li><p>The·event·handler·terminates·abnormally·and·<code·class="inline">gen_event</code>·logs·an·error.</p></li></ul><p>This·callback·is·used·to·limit·the·status·of·the·event·handler·returned·by |
| 1269 | <a·href="sys.html#get_status/1"><code·class="inline">sys:get_status/1,2</code></a>·or·sent·to·<a·href="../../../../lib/kernel-10.2.3/doc/html/logger.html"><code·class="inline">logger</code></a>.</p><p>The·callback·gets·a·map·<code·class="inline">Status</code>·describing·the·current·status | 1269 | <a·href="sys.html#get_status/1"><code·class="inline">sys:get_status/1,2</code></a>·or·sent·to·<a·href="../../../../lib/kernel-10.2.3/doc/html/logger.html"><code·class="inline">logger</code></a>.</p><p>The·callback·gets·a·map·<code·class="inline">Status</code>·describing·the·current·status |
| 1270 | and·shall·return·a·map·<code·class="inline">NewStatus</code>·with·the·same·keys, | 1270 | and·shall·return·a·map·<code·class="inline">NewStatus</code>·with·the·same·keys, |
| 1271 | but·it·may·transform·some·values.</p><p>Two·possible·use·cases·for·this·callback·is·to·remove | 1271 | but·it·may·transform·some·values.</p><p>Two·possible·use·cases·for·this·callback·is·to·remove |
| 1272 | sensitive·information·from·the·state·to·prevent·it·from·being·printed | 1272 | sensitive·information·from·the·state·to·prevent·it·from·being·printed |
| 1273 | in·log·files,·or·to·compact·large·irrelevant·status·items | 1273 | in·log·files,·or·to·compact·large·irrelevant·status·items |
| 1274 | that·would·only·clutter·the·logs.</p><p><em>Example</em>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">format_status</span><span·class="p"·data-group-id=" | 1274 | that·would·only·clutter·the·logs.</p><p><em>Example</em>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">format_status</span><span·class="p"·data-group-id="7097523908-1">(</span><span·class="n">Status</span><span·class="p"·data-group-id="7097523908-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1275 | ··</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">map</span><span·class="p"·data-group-id=" | 1275 | ··</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">map</span><span·class="p"·data-group-id="7097523908-2">(</span><span·class="w"> |
| 1276 | ····</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 1276 | ····</span><span·class="nf">fun</span><span·class="p"·data-group-id="7097523908-3">(</span><span·class="ss">state</span><span·class="p">,</span><span·class="n">State</span><span·class="p"·data-group-id="7097523908-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1277 | ············</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">remove</span><span·class="p"·data-group-id=" | 1277 | ············</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">remove</span><span·class="p"·data-group-id="7097523908-4">(</span><span·class="ss">private_key</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="p"·data-group-id="7097523908-4">)</span><span·class="p">;</span><span·class="w"> |
| 1278 | ·······</span><span·class="p"·data-group-id=" | 1278 | ·······</span><span·class="p"·data-group-id="7097523908-5">(</span><span·class="ss">message</span><span·class="p">,</span><span·class="p"·data-group-id="7097523908-6">{</span><span·class="ss">password</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">Pass</[·...·truncated·by·diffoscope;·len:·99,·SHA:·302c81aa7fcd947b5947c9313a85e2c8eded5651b695775fbf8443115c0ba303·...·]-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1279 | ············</span><span·class="p"·data-group-id=" | 1279 | ············</span><span·class="p"·data-group-id="7097523908-7">{</span><span·class="ss">password</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">removed</span><span·class="p"·data-group-id="7097523908-7">}</span><span·class="p">;</span><span·class="w"> |
| 1280 | ·······</span><span·class="p"·data-group-id=" | 1280 | ·······</span><span·class="p"·data-group-id="7097523908-8">(</span><span·class="p">_</span><span·class="p">,</span><span·class="n">Value</span><span·class="p"·data-group-id="7097523908-8">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1281 | ············</span><span·class="n">Value</span><span·class="w"> | 1281 | ············</span><span·class="n">Value</span><span·class="w"> |
| 1282 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Status</span><span·class="p"·data-group-id=" | 1282 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Status</span><span·class="p"·data-group-id="7097523908-2">)</span><span·class="p">.</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>This·callback·is·optional,·so·event·handler·modules·need·not·export·it. |
| 1283 | If·a·handler·does·not·export·this·function,·the·<code·class="inline">gen_event</code>·module | 1283 | If·a·handler·does·not·export·this·function,·the·<code·class="inline">gen_event</code>·module |
| 1284 | uses·the·handler·state·directly·for·the·purposes·described·below.</p><p>If·this·callback·is·exported·but·fails,·to·hide·possibly·sensitive·data, | 1284 | uses·the·handler·state·directly·for·the·purposes·described·below.</p><p>If·this·callback·is·exported·but·fails,·to·hide·possibly·sensitive·data, |
| 1285 | the·default·function·will·instead·return·the·fact·that | 1285 | the·default·function·will·instead·return·the·fact·that |
| 1286 | <a·href="#c:format_status/1"><code·class="inline">format_status/1</code></a>·has·crashed.</p></section> | 1286 | <a·href="#c:format_status/1"><code·class="inline">format_status/1</code></a>·has·crashed.</p></section> |
| 1287 | ··</section> | 1287 | ··</section> |
| 1288 | </section> | 1288 | </section> |
| 1289 | <section·class="detail"·id="c:format_status/2"> | 1289 | <section·class="detail"·id="c:format_status/2"> |
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| 131 | <p>Deprecated·and·replaced·by·<a·href="gen_statem.html"><code·class="inline">gen_statem</code></a>·in·OTP·20.</p><h2·id="module-migration-to-gen_statem"·class="section-heading"> | 131 | <p>Deprecated·and·replaced·by·<a·href="gen_statem.html"><code·class="inline">gen_statem</code></a>·in·OTP·20.</p><h2·id="module-migration-to-gen_statem"·class="section-heading"> |
| 132 | ··<a·href="#module-migration-to-gen_statem"·class="hover-link"> | 132 | ··<a·href="#module-migration-to-gen_statem"·class="hover-link"> |
| 133 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 133 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 134 | ··</a> | 134 | ··</a> |
| 135 | ··<span·class="text">Migration·to·gen_statem</span> | 135 | ··<span·class="text">Migration·to·gen_statem</span> |
| 136 | </h2> | 136 | </h2> |
| 137 | <p>Here·follows·a·simple·example·of·turning·a·gen_fsm·into·a·<a·href="gen_statem.html"><code·class="inline">gen_statem</code></a>. | 137 | <p>Here·follows·a·simple·example·of·turning·a·gen_fsm·into·a·<a·href="gen_statem.html"><code·class="inline">gen_statem</code></a>. |
| 138 | The·example·comes·from·the·previous·User's·Guide·for·<code·class="inline">gen_fsm</code></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 138 | The·example·comes·from·the·previous·User's·Guide·for·<code·class="inline">gen_fsm</code></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="0160457650-1">(</span><span·class="ss">code_lock</span><span·class="p"·data-group-id="0160457650-1">)</span><span·class="p">.</span><span·class="w"> |
| 139 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id=" | 139 | </span><span·class="p">-</span><span·class="na">define</span><span·class="p"·data-group-id="0160457650-2">(</span><span·class="n">NAME</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">code_lock</span><span·class="p"·data-group-id="0160457650-2">)</span><span·class="p">.</span><span·class="w"> |
| 140 | </span><span·class="c1">%-define(BEFORE_REWRITE,·true).</span><span·class="w"> | 140 | </span><span·class="c1">%-define(BEFORE_REWRITE,·true).</span><span·class="w"> |
| 141 | </span><span·class="w"> | 141 | </span><span·class="w"> |
| 142 | </span><span·class="p">-</span><span·class="na">ifdef</span><span·class="p"·data-group-id=" | 142 | </span><span·class="p">-</span><span·class="na">ifdef</span><span·class="p"·data-group-id="0160457650-3">(</span><span·class="n">BEFORE_REWRITE</span><span·class="p"·data-group-id="0160457650-3">)</span><span·class="p">.</span><span·class="w"> |
| 143 | </span><span·class="p">-</span><span·class="na">behaviour</span><span·class="p"·data-group-id=" | 143 | </span><span·class="p">-</span><span·class="na">behaviour</span><span·class="p"·data-group-id="0160457650-4">(</span><span·class="ss">gen_fsm</span><span·class="p"·data-group-id="0160457650-4">)</span><span·class="p">.</span><span·class="w"> |
| 144 | </span><span·class="p">-</span><span·class="na">else</span><span·class="p">.</span><span·class="w"> | 144 | </span><span·class="p">-</span><span·class="na">else</span><span·class="p">.</span><span·class="w"> |
| 145 | </span><span·class="p">-</span><span·class="na">behaviour</span><span·class="p"·data-group-id=" | 145 | </span><span·class="p">-</span><span·class="na">behaviour</span><span·class="p"·data-group-id="0160457650-5">(</span><span·class="ss">gen_statem</span><span·class="p"·data-group-id="0160457650-5">)</span><span·class="p">.</span><span·class="w"> |
| 146 | </span><span·class="p">-</span><span·class="na">endif</span><span·class="p">.</span><span·class="w"> | 146 | </span><span·class="p">-</span><span·class="na">endif</span><span·class="p">.</span><span·class="w"> |
| 147 | </span><span·class="w"> | 147 | </span><span·class="w"> |
| 148 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 148 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="0160457650-6">(</span><span·class="p"·data-group-id="0160457650-7">[</span><span·class="ss">start_link</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">button</span><span·class="p">/</s[·...·truncated·by·diffoscope;·len:·248,·SHA:·e7ec18450e9848139dd9348d8a7ba745d396046b1db92cb9c96862da65210fd0·...·]-6">)</span><span·class="p">.</span><span·class="w"> |
| 149 | </span><span·class="w"> | 149 | </span><span·class="w"> |
| 150 | </span><span·class="p">-</span><span·class="na">ifdef</span><span·class="p"·data-group-id=" | 150 | </span><span·class="p">-</span><span·class="na">ifdef</span><span·class="p"·data-group-id="0160457650-8">(</span><span·class="n">BEFORE_REWRITE</span><span·class="p"·data-group-id="0160457650-8">)</span><span·class="p">.</span><span·class="w"> |
| 151 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 151 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="0160457650-9">(</span><span·class="p"·data-group-id="0160457650-10">[</span><span·class="ss">init</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">locked</span><span·class="p">/</span><span·class="mi">2</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">open</span><span·class="p">/</span><span·class="mi">2</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">handle_sync_event</span><span·class="p">/</span><span·class="mi">4</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">handle_event</span><span·class="p">/</span><span·class="mi">3</span><span·class="p">,</span><span·class="w"> |
| 152 | ·····</span><span·class="ss">handle_info</span><span·class="p">/</span><span·class="mi">3</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">terminate</span><span·class="p">/</span><span·class="mi">3</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">code_change</span><span·class="p">/</span><span·class="mi">4</span><span·class="p"·data-group-id=" | 152 | ·····</span><span·class="ss">handle_info</span><span·class="p">/</span><span·class="mi">3</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">terminate</span><span·class="p">/</span><span·class="mi">3</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">code_change</span><span·class="p">/</span><span·class="mi">4</span><span·class="p"·data-group-id="0160457650-10">]</span><span·class="p"·data-group-id="0160457650-9">)</span><span·class="p">.</span><span·class="w"> |
| 153 | </span><span·class="p">-</span><span·class="na">else</span><span·class="p">.</span><span·class="w"> | 153 | </span><span·class="p">-</span><span·class="na">else</span><span·class="p">.</span><span·class="w"> |
| 154 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 154 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="0160457650-11">(</span><span·class="p"·data-group-id="0160457650-12">[</span><span·class="ss">init</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">callback_mode</span><span·class="p">/</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">locked</span><span·class="p">/</span><span·class="mi">3</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">open</span><span·class="p">/</span><span·class="mi">3</span><span·class="p">,</span><span·class="w"> |
| 155 | ·····</span><span·class="ss">terminate</span><span·class="p">/</span><span·class="mi">3</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">code_change</span><span·class="p">/</span><span·class="mi">4</span><span·class="p"·data-group-id=" | 155 | ·····</span><span·class="ss">terminate</span><span·class="p">/</span><span·class="mi">3</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">code_change</span><span·class="p">/</span><span·class="mi">4</span><span·class="p"·data-group-id="0160457650-12">]</span><span·class="p"·data-group-id="0160457650-11">)</span><span·class="p">.</span><span·class="w"> |
| 156 | </span><span·class="c1">%%·Add·callback__mode/0</span><span·class="w"> | 156 | </span><span·class="c1">%%·Add·callback__mode/0</span><span·class="w"> |
| 157 | </span><span·class="c1">%%·Change·arity·of·the·state·functions</span><span·class="w"> | 157 | </span><span·class="c1">%%·Change·arity·of·the·state·functions</span><span·class="w"> |
| 158 | </span><span·class="c1">%%·Remove·handle_info/3</span><span·class="w"> | 158 | </span><span·class="c1">%%·Remove·handle_info/3</span><span·class="w"> |
| 159 | </span><span·class="p">-</span><span·class="na">endif</span><span·class="p">.</span><span·class="w"> | 159 | </span><span·class="p">-</span><span·class="na">endif</span><span·class="p">.</span><span·class="w"> |
| 160 | </span><span·class="w"> | 160 | </span><span·class="w"> |
| 161 | </span><span·class="p">-</span><span·class="na">ifdef</span><span·class="p"·data-group-id=" | 161 | </span><span·class="p">-</span><span·class="na">ifdef</span><span·class="p"·data-group-id="0160457650-13">(</span><span·class="n">BEFORE_REWRITE</span><span·class="p"·data-group-id="0160457650-13">)</span><span·class="p">.</span><span·class="w"> |
| 162 | </span><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 162 | </span><span·class="nf">start_link</span><span·class="p"·data-group-id="0160457650-14">(</span><span·class="n">Code</span><span·class="p"·data-group-id="0160457650-14">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 163 | ····</span><span·class="nc">gen_fsm</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 163 | ····</span><span·class="nc">gen_fsm</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id="0160457650-15">(</span><span·class="p"·data-group-id="0160457650-16">{</span><span·class="ss">local</span><span·class="p">,</span><span·class="w">·</span><span·class="o">?</span><span·class="n">NAME</span><span·class="p"·data-group-id="0160457650-16">}</sp[·...·truncated·by·diffoscope;·len:·376,·SHA:·e2ff425c202246bea51b3af4df8382acd4cf151f0c8702356628d7d847adbf7a·...·]-15">)</span><span·class="p">.</span><span·class="w"> |
| 164 | </span><span·class="p">-</span><span·class="na">else</span><span·class="p">.</span><span·class="w"> | 164 | </span><span·class="p">-</span><span·class="na">else</span><span·class="p">.</span><span·class="w"> |
| 165 | </span><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 165 | </span><span·class="nf">start_link</span><span·class="p"·data-group-id="0160457650-18">(</span><span·class="n">Code</span><span·class="p"·data-group-id="0160457650-18">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 166 | ····</span><span·class="nc">gen_statem</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 166 | ····</span><span·class="nc">gen_statem</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id="0160457650-19">(</span><span·class="p"·data-group-id="0160457650-20">{</span><span·class="ss">local</span><span·class="p">,</span><span·class="o">?</span><span·class="n">NAME</span><span·class="p"·data-group-id="0160457650-20">}</span><span·class="p">,</sp[·...·truncated·by·diffoscope;·len:·352,·SHA:·d6238fcdfee2abdcaa1b007bf63d63f767a7c2bc7a3a8af7120cd3eff317c9c6·...·]-19">)</span><span·class="p">.</span><span·class="w"> |
| 167 | </span><span·class="p">-</span><span·class="na">endif</span><span·class="p">.</span><span·class="w"> | 167 | </span><span·class="p">-</span><span·class="na">endif</span><span·class="p">.</span><span·class="w"> |
| 168 | </span><span·class="w"> | 168 | </span><span·class="w"> |
| 169 | </span><span·class="p">-</span><span·class="na">ifdef</span><span·class="p"·data-group-id=" | 169 | </span><span·class="p">-</span><span·class="na">ifdef</span><span·class="p"·data-group-id="0160457650-22">(</span><span·class="n">BEFORE_REWRITE</span><span·class="p"·data-group-id="0160457650-22">)</span><span·class="p">.</span><span·class="w"> |
| 170 | </span><span·class="nf">button</span><span·class="p"·data-group-id=" | 170 | </span><span·class="nf">button</span><span·class="p"·data-group-id="0160457650-23">(</span><span·class="n">Digit</span><span·class="p"·data-group-id="0160457650-23">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 171 | ····</span><span·class="nc">gen_fsm</span><span·class="p">:</span><span·class="nf">send_event</span><span·class="p"·data-group-id=" | 171 | ····</span><span·class="nc">gen_fsm</span><span·class="p">:</span><span·class="nf">send_event</span><span·class="p"·data-group-id="0160457650-24">(</span><span·class="o">?</span><span·class="n">NAME</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0160457650-25">{</span><span·class="ss">button</span><span·class="p">,</span><span·class="w">·</span><s[·...·truncated·by·diffoscope;·len:·121,·SHA:·55ae5dfc67327668b2a2fc7d1b985eac8a2d006752d08e1664eebdcb51f604d4·...·]-24">)</span><span·class="p">.</span><span·class="w"> |
| 172 | </span><span·class="p">-</span><span·class="na">else</span><span·class="p">.</span><span·class="w"> | 172 | </span><span·class="p">-</span><span·class="na">else</span><span·class="p">.</span><span·class="w"> |
| 173 | </span><span·class="nf">button</span><span·class="p"·data-group-id=" | 173 | </span><span·class="nf">button</span><span·class="p"·data-group-id="0160457650-26">(</span><span·class="n">Digit</span><span·class="p"·data-group-id="0160457650-26">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 174 | ····</span><span·class="nc">gen_statem</span><span·class="p">:</span><span·class="nf">cast</span><span·class="p"·data-group-id=" | 174 | ····</span><span·class="nc">gen_statem</span><span·class="p">:</span><span·class="nf">cast</span><span·class="p"·data-group-id="0160457650-27">(</span><span·class="o">?</span><span·class="n">NAME</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0160457650-28">{</span><span·class="ss">button</span><span·class="p">,</span><span·class="n">Digit</spa[·...·truncated·by·diffoscope;·len:·97,·SHA:·069271d547881716f46a11f3f0f2ed838e18082261689197729b860fd945984f·...·]-27">)</span><span·class="p">.</span><span·class="w"> |
| 175 | ····</span><span·class="c1">%%·send_event·is·asynchronous·and·becomes·a·cast</span><span·class="w"> | 175 | ····</span><span·class="c1">%%·send_event·is·asynchronous·and·becomes·a·cast</span><span·class="w"> |
| 176 | </span><span·class="p">-</span><span·class="na">endif</span><span·class="p">.</span><span·class="w"> | 176 | </span><span·class="p">-</span><span·class="na">endif</span><span·class="p">.</span><span·class="w"> |
| 177 | </span><span·class="w"> | 177 | </span><span·class="w"> |
| 178 | </span><span·class="p">-</span><span·class="na">ifdef</span><span·class="p"·data-group-id=" | 178 | </span><span·class="p">-</span><span·class="na">ifdef</span><span·class="p"·data-group-id="0160457650-29">(</span><span·class="n">BEFORE_REWRITE</span><span·class="p"·data-group-id="0160457650-29">)</span><span·class="p">.</span><span·class="w"> |
| 179 | </span><span·class="nf">stop</span><span·class="p"·data-group-id=" | 179 | </span><span·class="nf">stop</span><span·class="p"·data-group-id="0160457650-30">(</span><span·class="p"·data-group-id="0160457650-30">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 180 | ····</span><span·class="nc">gen_fsm</span><span·class="p">:</span><span·class="nf">sync_send_all_state_event</span><span·class="p"·data-group-id=" | 180 | ····</span><span·class="nc">gen_fsm</span><span·class="p">:</span><span·class="nf">sync_send_all_state_event</span><span·class="p"·data-group-id="0160457650-31">(</span><span·class="o">?</span><span·class="n">NAME</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">stop</span><span·class="p"·data-group-id="0160457650-31">)</span><span·class="p">.</span><span·class="w"> |
| 181 | </span><span·class="p">-</span><span·class="na">else</span><span·class="p">.</span><span·class="w"> | 181 | </span><span·class="p">-</span><span·class="na">else</span><span·class="p">.</span><span·class="w"> |
| 182 | </span><span·class="nf">stop</span><span·class="p"·data-group-id=" | 182 | </span><span·class="nf">stop</span><span·class="p"·data-group-id="0160457650-32">(</span><span·class="p"·data-group-id="0160457650-32">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 183 | ····</span><span·class="nc">gen_statem</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id=" | 183 | ····</span><span·class="nc">gen_statem</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id="0160457650-33">(</span><span·class="o">?</span><span·class="n">NAME</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">stop</span><span·class="p"·data-group-id="0160457650-33">)</span><span·class="p">.</span><span·class="w"> |
| 184 | ····</span><span·class="c1">%%·sync_send·is·synchronous·and·becomes·call</span><span·class="w"> | 184 | ····</span><span·class="c1">%%·sync_send·is·synchronous·and·becomes·call</span><span·class="w"> |
| 185 | ····</span><span·class="c1">%%·all_state·is·handled·by·callback·code·in·gen_statem</span><span·class="w"> | 185 | ····</span><span·class="c1">%%·all_state·is·handled·by·callback·code·in·gen_statem</span><span·class="w"> |
| 186 | </span><span·class="p">-</span><span·class="na">endif</span><span·class="p">.</span><span·class="w"> | 186 | </span><span·class="p">-</span><span·class="na">endif</span><span·class="p">.</span><span·class="w"> |
| 187 | </span><span·class="nf">init</span><span·class="p"·data-group-id=" | 187 | </span><span·class="nf">init</span><span·class="p"·data-group-id="0160457650-34">(</span><span·class="n">Code</span><span·class="p"·data-group-id="0160457650-34">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 188 | ····</span><span·class="nf">do_lock</span><span·class="p"·data-group-id=" | 188 | ····</span><span·class="nf">do_lock</span><span·class="p"·data-group-id="0160457650-35">(</span><span·class="p"·data-group-id="0160457650-35">)</span><span·class="p">,</span><span·class="w"> |
| 189 | ····</span><span·class="n">Data</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 189 | ····</span><span·class="n">Data</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="0160457650-36">#{</span><span·class="ss">code</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="n">Code</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">remaining</span><span·class="w">·</s[·...·truncated·by·diffoscope;·len:·124,·SHA:·4bde5a3d0bba706417c2a21327bc1250aecfa1c19dfd65f4f4d2d68da4906608·...·]-36">}</span><span·class="p">,</span><span·class="w"> |
| 190 | ····</span><span·class="p"·data-group-id=" | 190 | ····</span><span·class="p"·data-group-id="0160457650-37">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">locked</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="0160457650-37">}</span><span·class="p">.</span><span·class="w"> |
| 191 | </span><span·class="w"> | 191 | </span><span·class="w"> |
| 192 | </span><span·class="p">-</span><span·class="na">ifdef</span><span·class="p"·data-group-id=" | 192 | </span><span·class="p">-</span><span·class="na">ifdef</span><span·class="p"·data-group-id="0160457650-38">(</span><span·class="n">BEFORE_REWRITE</span><span·class="p"·data-group-id="0160457650-38">)</span><span·class="p">.</span><span·class="w"> |
| 193 | </span><span·class="p">-</span><span·class="na">else</span><span·class="p">.</span><span·class="w"> | 193 | </span><span·class="p">-</span><span·class="na">else</span><span·class="p">.</span><span·class="w"> |
| 194 | </span><span·class="nf">callback_mode</span><span·class="p"·data-group-id=" | 194 | </span><span·class="nf">callback_mode</span><span·class="p"·data-group-id="0160457650-39">(</span><span·class="p"·data-group-id="0160457650-39">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 195 | ····</span><span·class="ss">state_functions</span><span·class="p">.</span><span·class="w"> | 195 | ····</span><span·class="ss">state_functions</span><span·class="p">.</span><span·class="w"> |
| 196 | </span><span·class="c1">%%·state_functions·mode·is·the·mode·most·similar·to</span><span·class="w"> | 196 | </span><span·class="c1">%%·state_functions·mode·is·the·mode·most·similar·to</span><span·class="w"> |
| 197 | </span><span·class="c1">%%·gen_fsm.·There·is·also·handle_event·mode·which·is</span><span·class="w"> | 197 | </span><span·class="c1">%%·gen_fsm.·There·is·also·handle_event·mode·which·is</span><span·class="w"> |
| 198 | </span><span·class="c1">%%·a·fairly·different·concept.</span><span·class="w"> | 198 | </span><span·class="c1">%%·a·fairly·different·concept.</span><span·class="w"> |
| 199 | </span><span·class="p">-</span><span·class="na">endif</span><span·class="p">.</span><span·class="w"> | 199 | </span><span·class="p">-</span><span·class="na">endif</span><span·class="p">.</span><span·class="w"> |
| 200 | </span><span·class="w"> | 200 | </span><span·class="w"> |
| 201 | </span><span·class="p">-</span><span·class="na">ifdef</span><span·class="p"·data-group-id=" | 201 | </span><span·class="p">-</span><span·class="na">ifdef</span><span·class="p"·data-group-id="0160457650-40">(</span><span·class="n">BEFORE_REWRITE</span><span·class="p"·data-group-id="0160457650-40">)</span><span·class="p">.</span><span·class="w"> |
| 202 | </span><span·class="nf">locked</span><span·class="p"·data-group-id=" | 202 | </span><span·class="nf">locked</span><span·class="p"·data-group-id="0160457650-41">(</span><span·class="p"·data-group-id="0160457650-42">{</span><span·class="ss">button</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Digit</span><span·class="p"·data-group-id="0160457650-42">}</span><span·class="p">,</[·...·truncated·by·diffoscope;·len:·98,·SHA:·8f8326c4bfbd965275c1c4afeae7b6661ef2218339c01e88ee645612540fa79d·...·]-41">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 203 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">analyze_lock</span><span·class="p"·data-group-id=" | 203 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">analyze_lock</span><span·class="p"·data-group-id="0160457650-43">(</span><span·class="n">Digit</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data0</span><span·class="p"·data-group-id="0160457650-43">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 204 | ····</span><span·class="p"·data-group-id=" | 204 | ····</span><span·class="p"·data-group-id="0160457650-44">{</span><span·class="ss">open</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">StateName</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·15,·SHA:·24a5dfc558b4b730941b8b8ccc0f9a0765f7b8caaf8f0037ac6353f016724d51·...·]-44">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 205 | ········</span><span·class="p"·data-group-id=" | 205 | ········</span><span·class="p"·data-group-id="0160457650-45">{</span><span·class="ss">next_state</span><span·class="p">,</span><span·class="w">·</span><span·class="n">StateName</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p">,</span><span·class="w">·</s[·...·truncated·by·diffoscope;·len:·74,·SHA:·f67741118c7ca8dacb40da84b4801f6dff9ae9f438265b11629d1aedec4fc0ee·...·]-45">}</span><span·class="p">;</span><span·class="w"> |
| 206 | ····</span><span·class="p"·data-group-id=" | 206 | ····</span><span·class="p"·data-group-id="0160457650-46">{</span><span·class="n">StateName</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="0160457650-46">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 207 | ········</span><span·class="p"·data-group-id=" | 207 | ········</span><span·class="p"·data-group-id="0160457650-47">{</span><span·class="ss">next_state</span><span·class="p">,</span><span·class="w">·</span><span·class="n">StateName</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="0160457650-47">}</span><span·class="w"> |
| 208 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 208 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 209 | </span><span·class="p">-</span><span·class="na">else</span><span·class="p">.</span><span·class="w"> | 209 | </span><span·class="p">-</span><span·class="na">else</span><span·class="p">.</span><span·class="w"> |
| 210 | </span><span·class="nf">locked</span><span·class="p"·data-group-id=" | 210 | </span><span·class="nf">locked</span><span·class="p"·data-group-id="0160457650-48">(</span><span·class="ss">cast</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0160457650-49">{</span><span·class="ss">button</span><span·class="p">,</span><span·class="n">Digit</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·150,·SHA:·c0cd44259955a7a6b454c0fd130bf59e43d604b5eefda41cc743e28986b9627e·...·]-48">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 211 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">analyze_lock</span><span·class="p"·data-group-id=" | 211 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">analyze_lock</span><span·class="p"·data-group-id="0160457650-50">(</span><span·class="n">Digit</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data0</span><span·class="p"·data-group-id="0160457650-50">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 212 | ····</span><span·class="p"·data-group-id=" | 212 | ····</span><span·class="p"·data-group-id="0160457650-51">{</span><span·class="ss">open</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">StateName</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·15,·SHA:·24a5dfc558b4b730941b8b8ccc0f9a0765f7b8caaf8f0037ac6353f016724d51·...·]-51">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 213 | ········</span><span·class="p"·data-group-id=" | 213 | ········</span><span·class="p"·data-group-id="0160457650-52">{</span><span·class="ss">next_state</span><span·class="p">,</span><span·class="w">·</span><span·class="n">StateName</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p">,</span><span·class="w">·</s[·...·truncated·by·diffoscope;·len:·74,·SHA:·f67741118c7ca8dacb40da84b4801f6dff9ae9f438265b11629d1aedec4fc0ee·...·]-52">}</span><span·class="p">;</span><span·class="w"> |
| 214 | ····</span><span·class="p"·data-group-id=" | 214 | ····</span><span·class="p"·data-group-id="0160457650-53">{</span><span·class="n">StateName</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="0160457650-53">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 215 | ········</span><span·class="p"·data-group-id=" | 215 | ········</span><span·class="p"·data-group-id="0160457650-54">{</span><span·class="ss">next_state</span><span·class="p">,</span><span·class="w">·</span><span·class="n">StateName</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="0160457650-54">}</span><span·class="w"> |
| 216 | ····</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> | 216 | ····</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> |
| 217 | </span><span·class="nf">locked</span><span·class="p"·data-group-id=" | 217 | </span><span·class="nf">locked</span><span·class="p"·data-group-id="0160457650-55">(</span><span·class="p"·data-group-id="0160457650-56">{</span><span·class="ss">call</span><span·class="p">,</span><span·class="w">·</span><span·class="n">From</span><span·class="p"·data-group-id="0160457650-56">}</span><span·class="p">,</spa[·...·truncated·by·diffoscope;·len:·168,·SHA:·cd28efe26f623b18448cff6afe40bca6c2cca675b60d90f43444662f46ecdce7·...·]-55">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 218 | ····</span><span·class="nf">handle_call</span><span·class="p"·data-group-id=" | 218 | ····</span><span·class="nf">handle_call</span><span·class="p"·data-group-id="0160457650-57">(</span><span·class="n">From</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="0160457650-57">)</span><span·class="p">;</span><span·class="w"> |
| 219 | </span><span·class="nf">locked</span><span·class="p"·data-group-id=" | 219 | </span><span·class="nf">locked</span><span·class="p"·data-group-id="0160457650-58">(</span><span·class="p"·data-group-id="0160457650-59">{</span><span·class="ss">info</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p"·data-group-id="0160457650-59">}</span><span·class="p">,</span[·...·truncated·by·diffoscope;·len:·173,·SHA:·fdf34b3a494c82754629596a823435d111e49dfb64566d77217072c24459d98f·...·]-58">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 220 | ····</span><span·class="nf">handle_info</span><span·class="p"·data-group-id=" | 220 | ····</span><span·class="nf">handle_info</span><span·class="p"·data-group-id="0160457650-60">(</span><span·class="n">Msg</span><span·class="p">,</span><span·class="w">·</span><span·class="n">StateName</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="0160457650-60">)</span><span·class="p">.</span><span·class="w"> |
| 221 | </span><span·class="c1">%%·Arity·differs</span><span·class="w"> | 221 | </span><span·class="c1">%%·Arity·differs</span><span·class="w"> |
| 222 | </span><span·class="c1">%%·All·state·events·are·dispatched·to·handle_call·and·handle_info·help</span><span·class="w"> | 222 | </span><span·class="c1">%%·All·state·events·are·dispatched·to·handle_call·and·handle_info·help</span><span·class="w"> |
| 223 | </span><span·class="c1">%%·functions.·If·you·want·to·handle·a·call·or·cast·event·specifically</span><span·class="w"> | 223 | </span><span·class="c1">%%·functions.·If·you·want·to·handle·a·call·or·cast·event·specifically</span><span·class="w"> |
| 224 | </span><span·class="c1">%%·for·this·state·you·would·add·a·special·clause·for·it·above.</span><span·class="w"> | 224 | </span><span·class="c1">%%·for·this·state·you·would·add·a·special·clause·for·it·above.</span><span·class="w"> |
| 225 | </span><span·class="p">-</span><span·class="na">endif</span><span·class="p">.</span><span·class="w"> | 225 | </span><span·class="p">-</span><span·class="na">endif</span><span·class="p">.</span><span·class="w"> |
| 226 | </span><span·class="w"> | 226 | </span><span·class="w"> |
| 227 | </span><span·class="p">-</span><span·class="na">ifdef</span><span·class="p"·data-group-id=" | 227 | </span><span·class="p">-</span><span·class="na">ifdef</span><span·class="p"·data-group-id="0160457650-61">(</span><span·class="n">BEFORE_REWRITE</span><span·class="p"·data-group-id="0160457650-61">)</span><span·class="p">.</span><span·class="w"> |
| 228 | </span><span·class="nf">open</span><span·class="p"·data-group-id=" | 228 | </span><span·class="nf">open</span><span·class="p"·data-group-id="0160457650-62">(</span><span·class="ss">timeout</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="p"·data-group-id="0160457650-62">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 229 | ·····</span><span·class="nf">do_lock</span><span·class="p"·data-group-id=" | 229 | ·····</span><span·class="nf">do_lock</span><span·class="p"·data-group-id="0160457650-63">(</span><span·class="p"·data-group-id="0160457650-63">)</span><span·class="p">,</span><span·class="w"> |
| 230 | ····</span><span·class="p"·data-group-id=" | 230 | ····</span><span·class="p"·data-group-id="0160457650-64">{</span><span·class="ss">next_state</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">locked</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="p"·data-group-id="0160457650-64">}</span><span·class="p">;</span><span·class="w"> |
| 231 | </span><span·class="nf">open</span><span·class="p"·data-group-id=" | 231 | </span><span·class="nf">open</span><span·class="p"·data-group-id="0160457650-65">(</span><span·class="p"·data-group-id="0160457650-66">{</span><span·class="ss">button</span><span·class="p">,</span><span·class="p">_</span><span·class="p"·data-group-id="0160457650-66">}</span><span·class="p">,</span><span·class="w">·</span[·...·truncated·by·diffoscope;·len:·69,·SHA:·449fed33ce86b4dc54a19f4630e61cde95387ca8cd2bbe5f5c2c62ee67e05306·...·]-65">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 232 | ····</span><span·class="p"·data-group-id=" | 232 | ····</span><span·class="p"·data-group-id="0160457650-67">{</span><span·class="ss">next_state</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">locked</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="0160457650-67">}</span><span·class="p">.</span><span·class="w"> |
| 233 | </span><span·class="p">-</span><span·class="na">else</span><span·class="p">.</span><span·class="w"> | 233 | </span><span·class="p">-</span><span·class="na">else</span><span·class="p">.</span><span·class="w"> |
| 234 | </span><span·class="nf">open</span><span·class="p"·data-group-id=" | 234 | </span><span·class="nf">open</span><span·class="p"·data-group-id="0160457650-68">(</span><span·class="ss">timeout</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="0160457650-68">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 235 | ····</span><span·class="nf">do_lock</span><span·class="p"·data-group-id=" | 235 | ····</span><span·class="nf">do_lock</span><span·class="p"·data-group-id="0160457650-69">(</span><span·class="p"·data-group-id="0160457650-69">)</span><span·class="p">,</span><span·class="w"> |
| 236 | ····</span><span·class="p"·data-group-id=" | 236 | ····</span><span·class="p"·data-group-id="0160457650-70">{</span><span·class="ss">next_state</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">locked</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="0160457650-70">}</span><span·class="p">;</span><span·class="w"> |
| 237 | </span><span·class="nf">open</span><span·class="p"·data-group-id=" | 237 | </span><span·class="nf">open</span><span·class="p"·data-group-id="0160457650-71">(</span><span·class="ss">cast</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0160457650-72">{</span><span·class="ss">button</span><span·class="p">,</span><span·class="p">_</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·145,·SHA:·69960316edc30f6382648b5d225df951e5e51f1ab500f48f3d6e3ec04a41ec01·...·]-71">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 238 | ····</span><span·class="p"·data-group-id=" | 238 | ····</span><span·class="p"·data-group-id="0160457650-73">{</span><span·class="ss">next_state</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">locked</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="0160457650-73">}</span><span·class="p">;</span><span·class="w"> |
| 239 | </span><span·class="nf">open</span><span·class="p"·data-group-id=" | 239 | </span><span·class="nf">open</span><span·class="p"·data-group-id="0160457650-74">(</span><span·class="p"·data-group-id="0160457650-75">{</span><span·class="ss">call</span><span·class="p">,</span><span·class="w">·</span><span·class="n">From</span><span·class="p"·data-group-id="0160457650-75">}</span><span·class="p">,</spa[·...·truncated·by·diffoscope;·len:·168,·SHA:·cd28efe26f623b18448cff6afe40bca6c2cca675b60d90f43444662f46ecdce7·...·]-74">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 240 | ····</span><span·class="nf">handle_call</span><span·class="p"·data-group-id=" | 240 | ····</span><span·class="nf">handle_call</span><span·class="p"·data-group-id="0160457650-76">(</span><span·class="n">From</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="0160457650-76">)</span><span·class="p">;</span><span·class="w"> |
| 241 | </span><span·class="nf">open</span><span·class="p"·data-group-id=" | 241 | </span><span·class="nf">open</span><span·class="p"·data-group-id="0160457650-77">(</span><span·class="ss">info</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="0160457650-77">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 242 | ····</span><span·class="nf">handle_info</span><span·class="p"·data-group-id=" | 242 | ····</span><span·class="nf">handle_info</span><span·class="p"·data-group-id="0160457650-78">(</span><span·class="n">Msg</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">open</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="0160457650-78">)</span><span·class="p">.</span><span·class="w"> |
| 243 | </span><span·class="c1">%%·Arity·differs</span><span·class="w"> | 243 | </span><span·class="c1">%%·Arity·differs</span><span·class="w"> |
| 244 | </span><span·class="c1">%%·All·state·events·are·dispatched·to·handle_call·and·handle_info·help</span><span·class="w"> | 244 | </span><span·class="c1">%%·All·state·events·are·dispatched·to·handle_call·and·handle_info·help</span><span·class="w"> |
| 245 | </span><span·class="c1">%%·functions.·If·you·want·to·handle·a·call·or·cast·event·specifically</span><span·class="w"> | 245 | </span><span·class="c1">%%·functions.·If·you·want·to·handle·a·call·or·cast·event·specifically</span><span·class="w"> |
| 246 | </span><span·class="c1">%%·for·this·state·you·would·add·a·special·clause·for·it·above.</span><span·class="w"> | 246 | </span><span·class="c1">%%·for·this·state·you·would·add·a·special·clause·for·it·above.</span><span·class="w"> |
| 247 | </span><span·class="p">-</span><span·class="na">endif</span><span·class="p">.</span><span·class="w"> | 247 | </span><span·class="p">-</span><span·class="na">endif</span><span·class="p">.</span><span·class="w"> |
| 248 | </span><span·class="w"> | 248 | </span><span·class="w"> |
| 249 | </span><span·class="p">-</span><span·class="na">ifdef</span><span·class="p"·data-group-id=" | 249 | </span><span·class="p">-</span><span·class="na">ifdef</span><span·class="p"·data-group-id="0160457650-79">(</span><span·class="n">BEFORE_REWRITE</span><span·class="p"·data-group-id="0160457650-79">)</span><span·class="p">.</span><span·class="w"> |
| 250 | </span><span·class="nf">handle_sync_event</span><span·class="p"·data-group-id=" | 250 | </span><span·class="nf">handle_sync_event</span><span·class="p"·data-group-id="0160457650-80">(</span><span·class="ss">stop</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">From</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">StateName</span><s[·...·truncated·by·diffoscope;·len:·114,·SHA:·01a3e11bdf68155bddf0747f123bdaac68472c5d333cc0629d5a4e43d49d89d7·...·]-80">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 251 | ····</span><span·class="p"·data-group-id=" | 251 | ····</span><span·class="p"·data-group-id="0160457650-81">{</span><span·class="ss">stop</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">normal</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span[·...·truncated·by·diffoscope;·len:·63,·SHA:·33f1015687a7a47aaf8a0efb491bf21b2fd4f14242a32cf96601dca7b92750c9·...·]-81">}</span><span·class="p">.</span><span·class="w"> |
| 252 | </span><span·class="nf">handle_event</span><span·class="p"·data-group-id=" | 252 | </span><span·class="nf">handle_event</span><span·class="p"·data-group-id="0160457650-82">(</span><span·class="n">Event</span><span·class="p">,</span><span·class="w">·</span><span·class="n">StateName</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="0160457650-82">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 253 | ····</span><span·class="p"·data-group-id=" | 253 | ····</span><span·class="p"·data-group-id="0160457650-83">{</span><span·class="ss">stop</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0160457650-84">{</span><span·class="ss">shutdown</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·445,·SHA:·f55265298fa6636147bf1f14c83b7433964d4ecbbaa9bc30ea4af927e38d4f3c·...·]-83">}</span><span·class="p">.</span><span·class="w"> |
| 254 | </span><span·class="nf">handle_info</span><span·class="p"·data-group-id=" | 254 | </span><span·class="nf">handle_info</span><span·class="p"·data-group-id="0160457650-86">(</span><span·class="n">Info</span><span·class="p">,</span><span·class="w">·</span><span·class="n">StateName</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="0160457650-86">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
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| Offset 1247, 23 lines modified | Offset 1247, 23 lines modified | ||
| 1247 | format/limit·the·server·state·for·debugging·and·logging·purposes.</p><p>It·is·called·in·the·following·situations:</p><ul><li><a·href="sys.html#get_status/1"><code·class="inline">sys:get_status/1,2</code></a>·is·invoked | 1247 | format/limit·the·server·state·for·debugging·and·logging·purposes.</p><p>It·is·called·in·the·following·situations:</p><ul><li><a·href="sys.html#get_status/1"><code·class="inline">sys:get_status/1,2</code></a>·is·invoked |
| 1248 | to·get·the·<code·class="inline">gen_server</code>·status.</li><li>The·<code·class="inline">gen_server</code>·process·terminates·abnormally·and·logs·an·error.</li></ul><p>This·callback·is·used·to·limit·the·status·of·the·process·returned·by | 1248 | to·get·the·<code·class="inline">gen_server</code>·status.</li><li>The·<code·class="inline">gen_server</code>·process·terminates·abnormally·and·logs·an·error.</li></ul><p>This·callback·is·used·to·limit·the·status·of·the·process·returned·by |
| 1249 | <a·href="sys.html#get_status/1"><code·class="inline">sys:get_status/1,2</code></a>·or·sent·to·<a·href="../../../../lib/kernel-10.2.3/doc/html/logger.html"><code·class="inline">logger</code></a>.</p><p>The·callback·gets·a·map·<code·class="inline">Status</code>·describing·the·current·status | 1249 | <a·href="sys.html#get_status/1"><code·class="inline">sys:get_status/1,2</code></a>·or·sent·to·<a·href="../../../../lib/kernel-10.2.3/doc/html/logger.html"><code·class="inline">logger</code></a>.</p><p>The·callback·gets·a·map·<code·class="inline">Status</code>·describing·the·current·status |
| 1250 | and·shall·return·a·map·<code·class="inline">NewStatus</code>·with·the·same·keys, | 1250 | and·shall·return·a·map·<code·class="inline">NewStatus</code>·with·the·same·keys, |
| 1251 | but·it·may·transform·some·values.</p><p>Two·possible·use·cases·for·this·callback·is·to·remove | 1251 | but·it·may·transform·some·values.</p><p>Two·possible·use·cases·for·this·callback·is·to·remove |
| 1252 | sensitive·information·from·the·state·to·prevent·it·from·being·printed | 1252 | sensitive·information·from·the·state·to·prevent·it·from·being·printed |
| 1253 | in·log·files,·or·to·compact·large·irrelevant·status·items | 1253 | in·log·files,·or·to·compact·large·irrelevant·status·items |
| 1254 | that·would·only·clutter·the·logs.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">format_status</span><span·class="p"·data-group-id="5 | 1254 | that·would·only·clutter·the·logs.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">format_status</span><span·class="p"·data-group-id="5881599369-1">(</span><span·class="n">Status</span><span·class="p"·data-group-id="5881599369-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1255 | ··</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">map</span><span·class="p"·data-group-id="5 | 1255 | ··</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">map</span><span·class="p"·data-group-id="5881599369-2">(</span><span·class="w"> |
| 1256 | ····</span><span·class="nf">fun</span><span·class="p"·data-group-id="5 | 1256 | ····</span><span·class="nf">fun</span><span·class="p"·data-group-id="5881599369-3">(</span><span·class="ss">state</span><span·class="p">,</span><span·class="n">State</span><span·class="p"·data-group-id="5881599369-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1257 | ············</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">remove</span><span·class="p"·data-group-id="5 | 1257 | ············</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">remove</span><span·class="p"·data-group-id="5881599369-4">(</span><span·class="ss">private_key</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="p"·data-group-id="5881599369-4">)</span><span·class="p">;</span><span·class="w"> |
| 1258 | ·······</span><span·class="p"·data-group-id="5 | 1258 | ·······</span><span·class="p"·data-group-id="5881599369-5">(</span><span·class="ss">message</span><span·class="p">,</span><span·class="p"·data-group-id="5881599369-6">{</span><span·class="ss">password</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">Pass</s[·...·truncated·by·diffoscope;·len:·98,·SHA:·21dd1a26778407ce6d5aa2c5eae22fc87870706054171467aefef3d3da627448·...·]-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1259 | ············</span><span·class="p"·data-group-id="5 | 1259 | ············</span><span·class="p"·data-group-id="5881599369-7">{</span><span·class="ss">password</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">removed</span><span·class="p"·data-group-id="5881599369-7">}</span><span·class="p">;</span><span·class="w"> |
| 1260 | ·······</span><span·class="p"·data-group-id="5 | 1260 | ·······</span><span·class="p"·data-group-id="5881599369-8">(</span><span·class="p">_</span><span·class="p">,</span><span·class="n">Value</span><span·class="p"·data-group-id="5881599369-8">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1261 | ············</span><span·class="n">Value</span><span·class="w"> | 1261 | ············</span><span·class="n">Value</span><span·class="w"> |
| 1262 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Status</span><span·class="p"·data-group-id="5 | 1262 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Status</span><span·class="p"·data-group-id="5881599369-2">)</span><span·class="p">.</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>This·callback·is·optional,·so·callback·modules·need·not·export·it.·The |
| 1263 | <code·class="inline">gen_server</code>·module·provides·a·default·implementation | 1263 | <code·class="inline">gen_server</code>·module·provides·a·default·implementation |
| 1264 | of·this·function·that·returns·the·callback·module·state.</p><p>If·this·callback·is·exported·but·fails, | 1264 | of·this·function·that·returns·the·callback·module·state.</p><p>If·this·callback·is·exported·but·fails, |
| 1265 | to·hide·possibly·sensitive·data, | 1265 | to·hide·possibly·sensitive·data, |
| 1266 | the·default·function·will·instead·return·the·fact·that | 1266 | the·default·function·will·instead·return·the·fact·that |
| 1267 | <a·href="#c:format_status/1"><code·class="inline">Module:format_status/1</code></a>·has·crashed.</p></section> | 1267 | <a·href="#c:format_status/1"><code·class="inline">Module:format_status/1</code></a>·has·crashed.</p></section> |
| 1268 | ··</section> | 1268 | ··</section> |
| 1269 | </section> | 1269 | </section> |
| Offset 172, 15 lines modified | Offset 172, 15 lines modified | ||
| 172 | </span><span·class="nc">gen_statem</span><span·class="p">:</span><span·class="ss">send_request</span><span·class="w"> | 172 | </span><span·class="nc">gen_statem</span><span·class="p">:</span><span·class="ss">send_request</span><span·class="w"> |
| 173 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nb">send</span><span·class="w"> | 173 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nb">send</span><span·class="w"> |
| 174 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="ss">'!'</span><span·class="w">············</span><span·class="o">--</span><span·class="o">--</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Module</span><span·class="p">:</span><span·class="n">StateName</span><span·class="o">/</span><span·class="mi">3</span><span·class="w"> | 174 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="ss">'!'</span><span·class="w">············</span><span·class="o">--</span><span·class="o">--</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Module</span><span·class="p">:</span><span·class="n">StateName</span><span·class="o">/</span><span·class="mi">3</span><span·class="w"> |
| 175 | ···················</span><span·class="ow">or</span><span·class="w">·</span><span·class="o">--</span><span·class="o">--</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Module</span><span·class="p">:</span><span·class="ss">handle_event</span><span·class="p">/</span><span·class="mi">4</span><span·class="w"> | 175 | ···················</span><span·class="ow">or</span><span·class="w">·</span><span·class="o">--</span><span·class="o">--</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Module</span><span·class="p">:</span><span·class="ss">handle_event</span><span·class="p">/</span><span·class="mi">4</span><span·class="w"> |
| 176 | ···················</span><span·class="ss">depending</span><span·class="w">·</span><span·class="ss">on</span><span·class="w">·</span><span·class="ss">callback</span><span·class="w">·</span><span·class="ss">mode</span><span·class="w"> | 176 | ···················</span><span·class="ss">depending</span><span·class="w">·</span><span·class="ss">on</span><span·class="w">·</span><span·class="ss">callback</span><span·class="w">·</span><span·class="ss">mode</span><span·class="w"> |
| 177 | </span><span·class="n">Release</span><span·class="w">·</span><span·class="ss">upgrade</span><span·class="o">/</span><span·class="nf">downgrade</span><span·class="w"> | 177 | </span><span·class="n">Release</span><span·class="w">·</span><span·class="ss">upgrade</span><span·class="o">/</span><span·class="nf">downgrade</span><span·class="w"> |
| 178 | </span><span·class="p"·data-group-id=" | 178 | </span><span·class="p"·data-group-id="2159454252-1">(</span><span·class="ss">code</span><span·class="w">·</span><span·class="ss">change</span><span·class="p"·data-group-id="2159454252-1">)</span><span·class="w"> |
| 179 | ······················</span><span·class="o">--</span><span·class="o">--</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Module</span><span·class="p">:</span><span·class="ss">code_change</span><span·class="p">/</span><span·class="mi">4</span></code></pre><h4·id="state-callback">State·callback</h4><p>The·<em>state·callback</em>·for·a·specific·<a·href="#t:state/0">state</a>·in·a·<code·class="inline">gen_statem</code> | 179 | ······················</span><span·class="o">--</span><span·class="o">--</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Module</span><span·class="p">:</span><span·class="ss">code_change</span><span·class="p">/</span><span·class="mi">4</span></code></pre><h4·id="state-callback">State·callback</h4><p>The·<em>state·callback</em>·for·a·specific·<a·href="#t:state/0">state</a>·in·a·<code·class="inline">gen_statem</code> |
| 180 | is·the·callback·function·that·is·called·for·all·events·in·this·state. | 180 | is·the·callback·function·that·is·called·for·all·events·in·this·state. |
| 181 | It·is·selected·depending·on·which·<a·href="#t:callback_mode/0"><em>callback·mode</em></a> | 181 | It·is·selected·depending·on·which·<a·href="#t:callback_mode/0"><em>callback·mode</em></a> |
| 182 | that·the·callback·module·defines·with·the·callback·function | 182 | that·the·callback·module·defines·with·the·callback·function |
| 183 | <a·href="#c:callback_mode/0"><code·class="inline">Module:callback_mode/0</code></a>.</p><p><a·href=""·id="state_functions"></a> | 183 | <a·href="#c:callback_mode/0"><code·class="inline">Module:callback_mode/0</code></a>.</p><p><a·href=""·id="state_functions"></a> |
| 184 | When·the·<a·href="#t:callback_mode/0"><em>callback·mode</em></a>·is·<code·class="inline">state_functions</code>, | 184 | When·the·<a·href="#t:callback_mode/0"><em>callback·mode</em></a>·is·<code·class="inline">state_functions</code>, |
| 185 | the·state·must·be·an·atom·and·is·used·as·the·<em>state·callback</em>·name; | 185 | the·state·must·be·an·atom·and·is·used·as·the·<em>state·callback</em>·name; |
| Offset 298, 105 lines modified | Offset 298, 105 lines modified | ||
| 298 | the·current·count·value.</li><li>Unknown·events·are·ignored·and·discarded.</li><li>There·is·boilerplate·code·for·start,·stop,·terminate,·code·change, | 298 | the·current·count·value.</li><li>Unknown·events·are·ignored·and·discarded.</li><li>There·is·boilerplate·code·for·start,·stop,·terminate,·code·change, |
| 299 | init,·to·set·the·callback·mode·to·<code·class="inline">state_functions</code>,·etc...</li></ul><h3·id="module-pushbutton-code"·class="section-heading"> | 299 | init,·to·set·the·callback·mode·to·<code·class="inline">state_functions</code>,·etc...</li></ul><h3·id="module-pushbutton-code"·class="section-heading"> |
| 300 | ··<a·href="#module-pushbutton-code"·class="hover-link"> | 300 | ··<a·href="#module-pushbutton-code"·class="hover-link"> |
| 301 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 301 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 302 | ··</a> | 302 | ··</a> |
| 303 | ··<span·class="text">Pushbutton·Code</span> | 303 | ··<span·class="text">Pushbutton·Code</span> |
| 304 | </h3> | 304 | </h3> |
| 305 | <p>The·following·is·the·complete·callback·module·file·<code·class="inline">pushbutton.erl</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 305 | <p>The·following·is·the·complete·callback·module·file·<code·class="inline">pushbutton.erl</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="6808193703-1">(</span><span·class="ss">pushbutton</span><span·class="p"·data-group-id="6808193703-1">)</span><span·class="p">.</span><span·class="w"> |
| 306 | </span><span·class="p">-</span><span·class="na">behaviour</span><span·class="p"·data-group-id=" | 306 | </span><span·class="p">-</span><span·class="na">behaviour</span><span·class="p"·data-group-id="6808193703-2">(</span><span·class="ss">gen_statem</span><span·class="p"·data-group-id="6808193703-2">)</span><span·class="p">.</span><span·class="w"> |
| 307 | </span><span·class="w"> | 307 | </span><span·class="w"> |
| 308 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 308 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="6808193703-3">(</span><span·class="p"·data-group-id="6808193703-4">[</span><span·class="ss">start</span><span·class="p">/</span><span·class="mi">0</span><span·class="p">,</span><span·class="ss">push</span><span·class="p">/</span><span·class="mi">0</span><s[·...·truncated·by·diffoscope;·len:·299,·SHA:·8d8f275ffe3d654c8d4eda620afdb6e6e34e04ed2dc7687ca547b019b25438c9·...·]-3">)</span><span·class="p">.</span><span·class="w"> |
| 309 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 309 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="6808193703-5">(</span><span·class="p"·data-group-id="6808193703-6">[</span><span·class="ss">terminate</span><span·class="p">/</span><span·class="mi">3</span><span·class="p">,</span><span·class="ss">code_change</span><span·class="p">/</span><span·class="mi"[·...·truncated·by·diffoscope;·len:·314,·SHA:·03335ff1659f5e708d610a7b7aa17c6c0d0373a38731bc6a891f36e09173c1dd·...·]-5">)</span><span·class="p">.</span><span·class="w"> |
| 310 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 310 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="6808193703-7">(</span><span·class="p"·data-group-id="6808193703-8">[</span><span·class="ss">on</span><span·class="p">/</span><span·class="mi">3</span><span·class="p">,</span><span·class="ss">off</span><span·class="p">/</span><span·class="mi">3</span><span·[·...·truncated·by·diffoscope;·len:·88,·SHA:·f6708c683b44bdd15d53aa0e4e18cb492c52226a50252b9a7dcc2516753232ef·...·]-7">)</span><span·class="p">.</span><span·class="w"> |
| 311 | </span><span·class="nf">name</span><span·class="p"·data-group-id=" | 311 | </span><span·class="nf">name</span><span·class="p"·data-group-id="6808193703-9">(</span><span·class="p"·data-group-id="6808193703-9">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">pushbutton_statem</span><span·class="p">.</span><span·class="w">·</span><span·class="c1">%·The·registered·server·name</span><span·class="w"> |
| 312 | </span><span·class="c1">%%·API.··This·example·uses·a·registered·name·name()</span><span·class="w"> | 312 | </span><span·class="c1">%%·API.··This·example·uses·a·registered·name·name()</span><span·class="w"> |
| 313 | </span><span·class="c1">%%·and·does·not·link·to·the·caller.</span><span·class="w"> | 313 | </span><span·class="c1">%%·and·does·not·link·to·the·caller.</span><span·class="w"> |
| 314 | </span><span·class="nf">start</span><span·class="p"·data-group-id=" | 314 | </span><span·class="nf">start</span><span·class="p"·data-group-id="6808193703-10">(</span><span·class="p"·data-group-id="6808193703-10">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 315 | ····</span><span·class="nc">gen_statem</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 315 | ····</span><span·class="nc">gen_statem</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="6808193703-11">(</span><span·class="p"·data-group-id="6808193703-12">{</span><span·class="ss">local</span><span·class="p">,</span><span·class="nf">name</span><span·class="p"·data-group-id="6808193703-13">(</span><span·class="p"·data-group-id="6808193703-13[·...·truncated·by·diffoscope;·len:·518,·SHA:·428004bb6d0357fa3092909ad2dea21e831a5affb7077240ad5ad0e25023b861·...·]-11">)</span><span·class="p">.</span><span·class="w"> |
| 316 | </span><span·class="nf">push</span><span·class="p"·data-group-id=" | 316 | </span><span·class="nf">push</span><span·class="p"·data-group-id="6808193703-16">(</span><span·class="p"·data-group-id="6808193703-16">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 317 | ····</span><span·class="nc">gen_statem</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id=" | 317 | ····</span><span·class="nc">gen_statem</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id="6808193703-17">(</span><span·class="nf">name</span><span·class="p"·data-group-id="6808193703-18">(</span><span·class="p"·data-group-id="6808193703-18">)</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">push</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·20,·SHA:·ee14e4bd60aee30525d82e70e910e55d0f10bf04ae83d7d5df5fb1629edf8234·...·]-17">)</span><span·class="p">.</span><span·class="w"> |
| 318 | </span><span·class="nf">get_count</span><span·class="p"·data-group-id=" | 318 | </span><span·class="nf">get_count</span><span·class="p"·data-group-id="6808193703-19">(</span><span·class="p"·data-group-id="6808193703-19">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 319 | ····</span><span·class="nc">gen_statem</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id=" | 319 | ····</span><span·class="nc">gen_statem</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id="6808193703-20">(</span><span·class="nf">name</span><span·class="p"·data-group-id="6808193703-21">(</span><span·class="p"·data-group-id="6808193703-21">)</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">get_count</span><span·class="p"·[·...·truncated·by·diffoscope;·len:·25,·SHA:·87400d5aea366f3056332613e6e7cff6a22a6637b6da274ea4045b8d3998b7d7·...·]-20">)</span><span·class="p">.</span><span·class="w"> |
| 320 | </span><span·class="nf">stop</span><span·class="p"·data-group-id=" | 320 | </span><span·class="nf">stop</span><span·class="p"·data-group-id="6808193703-22">(</span><span·class="p"·data-group-id="6808193703-22">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 321 | ····</span><span·class="nc">gen_statem</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id=" | 321 | ····</span><span·class="nc">gen_statem</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id="6808193703-23">(</span><span·class="nf">name</span><span·class="p"·data-group-id="6808193703-24">(</span><span·class="p"·data-group-id="6808193703-24">)</span><span·class="p"·data-group-id="6808193703-23">)</span><span·class="p">.</span><span·class="w"> |
| 322 | </span><span·class="c1">%%·Mandatory·callback·functions</span><span·class="w"> | 322 | </span><span·class="c1">%%·Mandatory·callback·functions</span><span·class="w"> |
| 323 | </span><span·class="nf">terminate</span><span·class="p"·data-group-id=" | 323 | </span><span·class="nf">terminate</span><span·class="p"·data-group-id="6808193703-25">(</span><span·class="p">_</span><span·class="n">Reason</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">State</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·cl[·...·truncated·by·diffoscope;·len:·60,·SHA:·564f0f65420ec7aaa729e0f5614f713bda3187ac93ff92f5694e08fabbe95d8e·...·]-25">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 324 | ····</span><span·class="ss">void</span><span·class="p">.</span><span·class="w"> | 324 | ····</span><span·class="ss">void</span><span·class="p">.</span><span·class="w"> |
| 325 | </span><span·class="nf">code_change</span><span·class="p"·data-group-id=" | 325 | </span><span·class="nf">code_change</span><span·class="p"·data-group-id="6808193703-26">(</span><span·class="p">_</span><span·class="n">Vsn</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p">,</span><span·cl[·...·truncated·by·diffoscope;·len:·109,·SHA:·1e7bd77bd90031f73be8e2033fec2036d998ebdef51d304e74e02e3b496c4be0·...·]-26">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 326 | ····</span><span·class="p"·data-group-id=" | 326 | ····</span><span·class="p"·data-group-id="6808193703-27">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">State</span><span·class="p">,</span><span·class="n">Data</span><span·class="p"·data-group-id="6808193703-27">}</span><span·class="p">.</span><span·class="w"> |
| 327 | </span><span·class="nf">init</span><span·class="p"·data-group-id=" | 327 | </span><span·class="nf">init</span><span·class="p"·data-group-id="6808193703-28">(</span><span·class="p"·data-group-id="6808193703-29">[</span><span·class="p"·data-group-id="6808193703-29">]</span><span·class="p"·data-group-id="6808193703-28">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 328 | ····</span><span·class="c1">%%·Set·the·initial·state·+·data.··Data·is·used·only·as·a·counter.</span><span·class="w"> | 328 | ····</span><span·class="c1">%%·Set·the·initial·state·+·data.··Data·is·used·only·as·a·counter.</span><span·class="w"> |
| 329 | ····</span><span·class="n">State</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">off</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">,</span><span·class="w"> | 329 | ····</span><span·class="n">State</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">off</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">,</span><span·class="w"> |
| 330 | ····</span><span·class="p"·data-group-id=" | 330 | ····</span><span·class="p"·data-group-id="6808193703-30">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">State</span><span·class="p">,</span><span·class="n">Data</span><span·class="p"·data-group-id="6808193703-30">}</span><span·class="p">.</span><span·class="w"> |
| 331 | </span><span·class="nf">callback_mode</span><span·class="p"·data-group-id=" | 331 | </span><span·class="nf">callback_mode</span><span·class="p"·data-group-id="6808193703-31">(</span><span·class="p"·data-group-id="6808193703-31">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">state_functions</span><span·class="p">.</span><span·class="w"> |
| 332 | </span><span·class="c1">%%%·state·callback(s)</span><span·class="w"> | 332 | </span><span·class="c1">%%%·state·callback(s)</span><span·class="w"> |
| 333 | </span><span·class="nf">off</span><span·class="p"·data-group-id=" | 333 | </span><span·class="nf">off</span><span·class="p"·data-group-id="6808193703-32">(</span><span·class="p"·data-group-id="6808193703-33">{</span><span·class="ss">call</span><span·class="p">,</span><span·class="n">From</span><span·class="p"·data-group-id="6808193703-33">}</span><span·class="p">,</span><span·class="w">·</spa[·...·truncated·by·diffoscope;·len:·146,·SHA:·a316557a1f24c07975595ba5500fec4bf98b9d4d115f9059dc1aca2b73b4cbee·...·]-32">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 334 | ····</span><span·class="c1">%%·Go·to·'on',·increment·count·and·reply</span><span·class="w"> | 334 | ····</span><span·class="c1">%%·Go·to·'on',·increment·count·and·reply</span><span·class="w"> |
| 335 | ····</span><span·class="c1">%%·that·the·resulting·status·is·'on'</span><span·class="w"> | 335 | ····</span><span·class="c1">%%·that·the·resulting·status·is·'on'</span><span·class="w"> |
| 336 | ····</span><span·class="p"·data-group-id=" | 336 | ····</span><span·class="p"·data-group-id="6808193703-34">{</span><span·class="ss">next_state</span><span·class="p">,</span><span·class="ss">on</span><span·class="p">,</span><span·class="n">Data</span><span·class="o">+</span><span·class="mi">1</span><span·class="p">,</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·362,·SHA:·336ac799609802fa01243b6d9f205b39f9f10c8e7ac0fdd7de9f0c358d40d1e8·...·]-34">}</span><span·class="p">;</span><span·class="w"> |
| 337 | </span><span·class="nf">off</span><span·class="p"·data-group-id=" | 337 | </span><span·class="nf">off</span><span·class="p"·data-group-id="6808193703-37">(</span><span·class="n">EventType</span><span·class="p">,</span><span·class="w">·</span><span·class="n">EventContent</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="6808193703-37">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 338 | ····</span><span·class="nf">handle_event</span><span·class="p"·data-group-id=" | 338 | ····</span><span·class="nf">handle_event</span><span·class="p"·data-group-id="6808193703-38">(</span><span·class="n">EventType</span><span·class="p">,</span><span·class="w">·</span><span·class="n">EventContent</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="6808193703-38">)</span><span·class="p">.</span><span·class="w"> |
| 339 | </span><span·class="nf">on</span><span·class="p"·data-group-id=" | 339 | </span><span·class="nf">on</span><span·class="p"·data-group-id="6808193703-39">(</span><span·class="p"·data-group-id="6808193703-40">{</span><span·class="ss">call</span><span·class="p">,</span><span·class="n">From</span><span·class="p"·data-group-id="6808193703-40">}</span><span·class="p">,</span><span·class="w">·</spa[·...·truncated·by·diffoscope;·len:·146,·SHA:·a316557a1f24c07975595ba5500fec4bf98b9d4d115f9059dc1aca2b73b4cbee·...·]-39">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 340 | ····</span><span·class="c1">%%·Go·to·'off'·and·reply·that·the·resulting·status·is·'off'</span><span·class="w"> | 340 | ····</span><span·class="c1">%%·Go·to·'off'·and·reply·that·the·resulting·status·is·'off'</span><span·class="w"> |
| 341 | ····</span><span·class="p"·data-group-id=" | 341 | ····</span><span·class="p"·data-group-id="6808193703-41">{</span><span·class="ss">next_state</span><span·class="p">,</span><span·class="ss">off</span><span·class="p">,</span><span·class="n">Data</span><span·class="p">,</span><span·class="p"·data-group-id="6808193703-42">[</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·315,·SHA:·d63acd37c7aa28364ca681198109f6418382eac2a8d3422865b8ee45250bffcb·...·]-41">}</span><span·class="p">;</span><span·class="w"> |
| 342 | </span><span·class="nf">on</span><span·class="p"·data-group-id=" | 342 | </span><span·class="nf">on</span><span·class="p"·data-group-id="6808193703-44">(</span><span·class="n">EventType</span><span·class="p">,</span><span·class="w">·</span><span·class="n">EventContent</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="6808193703-44">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 343 | ····</span><span·class="nf">handle_event</span><span·class="p"·data-group-id=" | 343 | ····</span><span·class="nf">handle_event</span><span·class="p"·data-group-id="6808193703-45">(</span><span·class="n">EventType</span><span·class="p">,</span><span·class="w">·</span><span·class="n">EventContent</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="6808193703-45">)</span><span·class="p">.</span><span·class="w"> |
| 344 | </span><span·class="c1">%%·Handle·events·common·to·all·states</span><span·class="w"> | 344 | </span><span·class="c1">%%·Handle·events·common·to·all·states</span><span·class="w"> |
| 345 | </span><span·class="nf">handle_event</span><span·class="p"·data-group-id=" | 345 | </span><span·class="nf">handle_event</span><span·class="p"·data-group-id="6808193703-46">(</span><span·class="p"·data-group-id="6808193703-47">{</span><span·class="ss">call</span><span·class="p">,</span><span·class="n">From</span><span·class="p"·data-group-id="6808193703-47">}</span><span·class="p">,</span><span·class="w">·</spa[·...·truncated·by·diffoscope;·len:·151,·SHA:·e35350f8d76a3482953650085b14e518878fd6f6da8f78ac269cfcf19fa94e3b·...·]-46">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 346 | ····</span><span·class="c1">%%·Reply·with·the·current·count</span><span·class="w"> | 346 | ····</span><span·class="c1">%%·Reply·with·the·current·count</span><span·class="w"> |
| 347 | ····</span><span·class="p"·data-group-id=" | 347 | ····</span><span·class="p"·data-group-id="6808193703-48">{</span><span·class="ss">keep_state</span><span·class="p">,</span><span·class="n">Data</span><span·class="p">,</span><span·class="p"·data-group-id="6808193703-49">[</span><span·class="p"·data-group-id="6808193703-50">{</span><span·class="ss"[·...·truncated·by·diffoscope;·len:·264,·SHA:·2f4d2fa441649453b3d31d0d7077e6c662240857fa905b1736280d4a3863adc4·...·]-48">}</span><span·class="p">;</span><span·class="w"> |
| 348 | </span><span·class="nf">handle_event</span><span·class="p"·data-group-id=" | 348 | </span><span·class="nf">handle_event</span><span·class="p"·data-group-id="6808193703-51">(</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="6808193703-51">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 349 | ····</span><span·class="c1">%%·Ignore·all·other·events</span><span·class="w"> | 349 | ····</span><span·class="c1">%%·Ignore·all·other·events</span><span·class="w"> |
| 350 | ····</span><span·class="p"·data-group-id=" | 350 | ····</span><span·class="p"·data-group-id="6808193703-52">{</span><span·class="ss">keep_state</span><span·class="p">,</span><span·class="n">Data</span><span·class="p"·data-group-id="6808193703-52">}</span><span·class="p">.</span></code></pre><p>The·following·is·a·shell·session·when·running·it:</p><[·...·truncated·by·diffoscope;·len:·271,·SHA:·a80fbdedb7b769bb82dd04d571f20d8542473537fd030bedf0f0d2dc922e9d46·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 351 | </span><span·class="p"·data-group-id=" | 351 | </span><span·class="p"·data-group-id="5666810768-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.36</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="5666810768-2">}</span><span·class="gp·unselectable"> |
| 352 | 2>·</span><span·class="nc">pushbutton</span><span·class="p">:</span><span·class="nf">get_count</span><span·class="p"·data-group-id=" | 352 | 2>·</span><span·class="nc">pushbutton</span><span·class="p">:</span><span·class="nf">get_count</span><span·class="p"·data-group-id="5666810768-3">(</span><span·class="p"·data-group-id="5666810768-3">)</span><span·class="p">.</span><span·class="w"> |
| 353 | </span><span·class="mi">0</span><span·class="gp·unselectable"> | 353 | </span><span·class="mi">0</span><span·class="gp·unselectable"> |
| 354 | 3>·</span><span·class="nc">pushbutton</span><span·class="p">:</span><span·class="nf">push</span><span·class="p"·data-group-id=" | 354 | 3>·</span><span·class="nc">pushbutton</span><span·class="p">:</span><span·class="nf">push</span><span·class="p"·data-group-id="5666810768-4">(</span><span·class="p"·data-group-id="5666810768-4">)</span><span·class="p">.</span><span·class="w"> |
| 355 | </span><span·class="ss">on</span><span·class="gp·unselectable"> | 355 | </span><span·class="ss">on</span><span·class="gp·unselectable"> |
| 356 | 4>·</span><span·class="nc">pushbutton</span><span·class="p">:</span><span·class="nf">get_count</span><span·class="p"·data-group-id=" | 356 | 4>·</span><span·class="nc">pushbutton</span><span·class="p">:</span><span·class="nf">get_count</span><span·class="p"·data-group-id="5666810768-5">(</span><span·class="p"·data-group-id="5666810768-5">)</span><span·class="p">.</span><span·class="w"> |
| 357 | </span><span·class="mi">1</span><span·class="gp·unselectable"> | 357 | </span><span·class="mi">1</span><span·class="gp·unselectable"> |
| 358 | 5>·</span><span·class="nc">pushbutton</span><span·class="p">:</span><span·class="nf">push</span><span·class="p"·data-group-id=" | 358 | 5>·</span><span·class="nc">pushbutton</span><span·class="p">:</span><span·class="nf">push</span><span·class="p"·data-group-id="5666810768-6">(</span><span·class="p"·data-group-id="5666810768-6">)</span><span·class="p">.</span><span·class="w"> |
| 359 | </span><span·class="ss">off</span><span·class="gp·unselectable"> | 359 | </span><span·class="ss">off</span><span·class="gp·unselectable"> |
| 360 | 6>·</span><span·class="nc">pushbutton</span><span·class="p">:</span><span·class="nf">get_count</span><span·class="p"·data-group-id=" | 360 | 6>·</span><span·class="nc">pushbutton</span><span·class="p">:</span><span·class="nf">get_count</span><span·class="p"·data-group-id="5666810768-7">(</span><span·class="p"·data-group-id="5666810768-7">)</span><span·class="p">.</span><span·class="w"> |
| 361 | </span><span·class="mi">1</span><span·class="gp·unselectable"> | 361 | </span><span·class="mi">1</span><span·class="gp·unselectable"> |
| 362 | 7>·</span><span·class="nc">pushbutton</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id=" | 362 | 7>·</span><span·class="nc">pushbutton</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id="5666810768-8">(</span><span·class="p"·data-group-id="5666810768-8">)</span><span·class="p">.</span><span·class="w"> |
| 363 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 363 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 364 | 8>·</span><span·class="nc">pushbutton</span><span·class="p">:</span><span·class="nf">push</span><span·class="p"·data-group-id=" | 364 | 8>·</span><span·class="nc">pushbutton</span><span·class="p">:</span><span·class="nf">push</span><span·class="p"·data-group-id="5666810768-9">(</span><span·class="p"·data-group-id="5666810768-9">)</span><span·class="p">.</span><span·class="w"> |
| 365 | </span><span·class="gt">**·exception·exit:·{noproc,{gen_statem,call,[pushbutton_statem,push,infinity]}} | 365 | </span><span·class="gt">**·exception·exit:·{noproc,{gen_statem,call,[pushbutton_statem,push,infinity]}} |
| 366 | ·····in·function··gen:do_for_proc/2·(gen.erl,·line·261) | 366 | ·····in·function··gen:do_for_proc/2·(gen.erl,·line·261) |
| 367 | ·····in·call·from·gen_statem:call/3·(gen_statem.erl,·line·386)</span></code></pre><p>To·compare·styles,·here·follows·the·same·example·using | 367 | ·····in·call·from·gen_statem:call/3·(gen_statem.erl,·line·386)</span></code></pre><p>To·compare·styles,·here·follows·the·same·example·using |
| 368 | <a·href="#t:callback_mode/0"><em>callback·mode</em></a>·<code·class="inline">handle_event_function</code>, | 368 | <a·href="#t:callback_mode/0"><em>callback·mode</em></a>·<code·class="inline">handle_event_function</code>, |
| 369 | or·rather,·the·code·to·replace·after·function·<a·href="#c:init/1"><code·class="inline">init/1</code></a> | 369 | or·rather,·the·code·to·replace·after·function·<a·href="#c:init/1"><code·class="inline">init/1</code></a> |
| 370 | of·the·<code·class="inline">pushbutton.erl</code>·example·file·above:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">callback_mode</span><span·class="p"·data-group-id=" | 370 | of·the·<code·class="inline">pushbutton.erl</code>·example·file·above:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">callback_mode</span><span·class="p"·data-group-id="1493942172-1">(</span><span·class="p"·data-group-id="1493942172-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">handle_event_function</span><span·class="p">.</span><span·class="w"> |
| 371 | </span><span·class="c1">%%%·state·callback(s)</span><span·class="w"> | 371 | </span><span·class="c1">%%%·state·callback(s)</span><span·class="w"> |
| 372 | </span><span·class="nf">handle_event</span><span·class="p"·data-group-id=" | 372 | </span><span·class="nf">handle_event</span><span·class="p"·data-group-id="1493942172-2">(</span><span·class="p"·data-group-id="1493942172-3">{</span><span·class="ss">call</span><span·class="p">,</span><span·class="n">From</span><span·class="p"·data-group-id="1493942172-3">}</span><span·class="p">,</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·218,·SHA:·ce38fe4fe040c20a302e5084d8eeb12aa80910ed826dbb408e2a5f38c665b1ff·...·]-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 373 | ····</span><span·class="c1">%%·Go·to·'on',·increment·count·and·reply</span><span·class="w"> | 373 | ····</span><span·class="c1">%%·Go·to·'on',·increment·count·and·reply</span><span·class="w"> |
| 374 | ····</span><span·class="c1">%%·that·the·resulting·status·is·'on'</span><span·class="w"> | 374 | ····</span><span·class="c1">%%·that·the·resulting·status·is·'on'</span><span·class="w"> |
| 375 | ····</span><span·class="p"·data-group-id=" | 375 | ····</span><span·class="p"·data-group-id="1493942172-4">{</span><span·class="ss">next_state</span><span·class="p">,</span><span·class="ss">on</span><span·class="p">,</span><span·class="n">Data</span><span·class="o">+</span><span·class="mi">1</span><span·class="p">,</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·357,·SHA:·3b13760c11b55be7441ab813318fb7c3a93a3b37b28eb4bcecbd55d9b14386e3·...·]-4">}</span><span·class="p">;</span><span·class="w"> |
| 376 | </span><span·class="nf">handle_event</span><span·class="p"·data-group-id=" | 376 | </span><span·class="nf">handle_event</span><span·class="p"·data-group-id="1493942172-7">(</span><span·class="p"·data-group-id="1493942172-8">{</span><span·class="ss">call</span><span·class="p">,</span><span·class="n">From</span><span·class="p"·data-group-id="1493942172-8">}</span><span·class="p">,</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·217,·SHA:·2291fd58a7d35852d292153970581196254af17c31b34d460f3c972588a14642·...·]-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 377 | ····</span><span·class="c1">%%·Go·to·'off'·and·reply·that·the·resulting·status·is·'off'</span><span·class="w"> | 377 | ····</span><span·class="c1">%%·Go·to·'off'·and·reply·that·the·resulting·status·is·'off'</span><span·class="w"> |
| 378 | ····</span><span·class="p"·data-group-id=" | 378 | ····</span><span·class="p"·data-group-id="1493942172-9">{</span><span·class="ss">next_state</span><span·class="p">,</span><span·class="ss">off</span><span·class="p">,</span><span·class="n">Data</span><span·class="p">,</span><span·class="p"·data-group-id="1493942172-10">[</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·314,·SHA:·10756fd8d04bdae7bc7ee6e18c1614f46c7b34e2cfcdf0f55fed5af6e5edd72f·...·]-9">}</span><span·class="p">;</span><span·class="w"> |
| 379 | </span><span·class="c1">%%</span><span·class="w"> | 379 | </span><span·class="c1">%%</span><span·class="w"> |
| 380 | </span><span·class="c1">%%·Event·handling·common·to·all·states</span><span·class="w"> | 380 | </span><span·class="c1">%%·Event·handling·common·to·all·states</span><span·class="w"> |
| 381 | </span><span·class="nf">handle_event</span><span·class="p"·data-group-id=" | 381 | </span><span·class="nf">handle_event</span><span·class="p"·data-group-id="1493942172-12">(</span><span·class="p"·data-group-id="1493942172-13">{</span><span·class="ss">call</span><span·class="p">,</span><span·class="n">From</span><span·class="p"·data-group-id="1493942172-13">}</span><span·class="p">,</span><span·class="w">·</spa[·...·truncated·by·diffoscope;·len:·227,·SHA:·e28dea40aa665994fc2d129e5c44c4728468ac312aabb700a12ff52de1d424cd·...·]-12">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 382 | ····</span><span·class="c1">%%·Reply·with·the·current·count</span><span·class="w"> | 382 | ····</span><span·class="c1">%%·Reply·with·the·current·count</span><span·class="w"> |
| 383 | ····</span><span·class="p"·data-group-id=" | 383 | ····</span><span·class="p"·data-group-id="1493942172-14">{</span><span·class="ss">next_state</span><span·class="p">,</span><span·class="n">State</span><span·class="p">,</span><span·class="n">Data</span><span·class="p">,</span><span·class="p"·data-group-id="1493942172-15">[</span><span·class="p"·da[·...·truncated·by·diffoscope;·len:·316,·SHA:·fbe718d1037b9bfb44330d7eeedf0ee90a74e5ae70495709304aee2e2be5215c·...·]-14">}</span><span·class="p">;</span><span·class="w"> |
| 384 | </span><span·class="nf">handle_event</span><span·class="p"·data-group-id=" | 384 | </span><span·class="nf">handle_event</span><span·class="p"·data-group-id="1493942172-17">(</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="p">,</span><span·class="w">·</span><span·class="[·...·truncated·by·diffoscope;·len:·55,·SHA:·f2638c88a3b34584c73d3b4ccecc085df27fa3595c78e2112ba2edba9cf567dc·...·]-17">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 385 | ····</span><span·class="c1">%%·Ignore·all·other·events</span><span·class="w"> | 385 | ····</span><span·class="c1">%%·Ignore·all·other·events</span><span·class="w"> |
| 386 | ····</span><span·class="p"·data-group-id=" | 386 | ····</span><span·class="p"·data-group-id="1493942172-18">{</span><span·class="ss">next_state</span><span·class="p">,</span><span·class="n">State</span><span·class="p">,</span><span·class="n">Data</span><span·class="p"·data-group-id="1493942172-18">}</span><span·class="p">.</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><h2·id="module-api-changes"·class="section-heading"> |
| 387 | ··<a·href="#module-api-changes"·class="hover-link"> | 387 | ··<a·href="#module-api-changes"·class="hover-link"> |
| 388 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 388 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 389 | ··</a> | 389 | ··</a> |
| 390 | ··<span·class="text">API·changes</span> | 390 | ··<span·class="text">API·changes</span> |
| 391 | </h2> | 391 | </h2> |
| 392 | <ul><li>This·behavior·appeared·in·Erlang/OTP·19.0·as·experimental.</li><li>In·OTP·19.1·a·backwards·incompatible·change·of·the·return·tuple·from | 392 | <ul><li>This·behavior·appeared·in·Erlang/OTP·19.0·as·experimental.</li><li>In·OTP·19.1·a·backwards·incompatible·change·of·the·return·tuple·from |
| 393 | <a·href="#c:init/1"><code·class="inline">Module:init/1</code></a>·was·made, | 393 | <a·href="#c:init/1"><code·class="inline">Module:init/1</code></a>·was·made, |
| Offset 3083, 23 lines modified | Offset 3083, 23 lines modified | ||
| 3083 | return·value·and·how·its·status·appears·in·termination·error·logs, | 3083 | return·value·and·how·its·status·appears·in·termination·error·logs, |
| 3084 | exports·an·instance·of·<a·href="#c:format_status/1"><code·class="inline">Module:format_status/1</code></a>, | 3084 | exports·an·instance·of·<a·href="#c:format_status/1"><code·class="inline">Module:format_status/1</code></a>, |
| 3085 | which·will·get·a·map·<code·class="inline">Status</code>·that·describes·the·current·state | 3085 | which·will·get·a·map·<code·class="inline">Status</code>·that·describes·the·current·state |
| 3086 | of·the·<code·class="inline">gen_statem</code>,·and·shall·return·a·map·<code·class="inline">NewStatus</code> | 3086 | of·the·<code·class="inline">gen_statem</code>,·and·shall·return·a·map·<code·class="inline">NewStatus</code> |
| 3087 | containing·the·same·keys·as·the·input·map, | 3087 | containing·the·same·keys·as·the·input·map, |
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| 144 | module.</p></section><h2·id="module-error-information"·class="section-heading"> | 144 | module.</p></section><h2·id="module-error-information"·class="section-heading"> |
| 145 | ··<a·href="#module-error-information"·class="hover-link"> | 145 | ··<a·href="#module-error-information"·class="hover-link"> |
| 146 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 146 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 147 | ··</a> | 147 | ··</a> |
| 148 | ··<span·class="text">Error·Information</span> | 148 | ··<span·class="text">Error·Information</span> |
| 149 | </h2> | 149 | </h2> |
| 150 | <p>The·<code·class="inline">ErrorInfo</code>·mentioned·in·this·module·is·the·standard·<code·class="inline">ErrorInfo</code>·structure | 150 | <p>The·<code·class="inline">ErrorInfo</code>·mentioned·in·this·module·is·the·standard·<code·class="inline">ErrorInfo</code>·structure |
| 151 | that·is·returned·from·all·I/O·modules.·It·has·the·following·format:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 151 | that·is·returned·from·all·I/O·modules.·It·has·the·following·format:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="1537902850-1">{</span><span·class="n">ErrorLocation</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ErrorDescriptor</span><span·class="p"·data-group-id="1537[·...·truncated·by·diffoscope;·len:·377,·SHA:·7d059fca72a4ead46f0e06c8b0601d6c259950acad255f79b8227a602fdd8879·...·]-1">)</span></code></pre> |
| 152 | ····</section> | 152 | ····</section> |
| 153 | </div> | 153 | </div> |
| 154 | ··<section·id="summary"·class="details-list"> | 154 | ··<section·id="summary"·class="details-list"> |
| 155 | ····<h1·class="section-heading"> | 155 | ····<h1·class="section-heading"> |
| 156 | ······<a·class="hover-link"·href="#summary"> | 156 | ······<a·class="hover-link"·href="#summary"> |
| Offset 1159, 20 lines modified | Offset 1159, 20 lines modified | ||
| 1159 | ······</div> | 1159 | ······</div> |
| 1160 | <p>The·default·standard·I/O·device·assigned·to·a·process.·This·device·is·used·when | 1160 | <p>The·default·standard·I/O·device·assigned·to·a·process.·This·device·is·used·when |
| 1161 | no·<code·class="inline">IoDevice</code>·argument·is·specified·in·the·function·calls·in·this·module.</p><p>It·is·sometimes·desirable·to·use·an·explicit·<code·class="inline">IoDevice</code>·argument·that | 1161 | no·<code·class="inline">IoDevice</code>·argument·is·specified·in·the·function·calls·in·this·module.</p><p>It·is·sometimes·desirable·to·use·an·explicit·<code·class="inline">IoDevice</code>·argument·that |
| 1162 | refers·to·the·default·I/O·device.·This·is·the·case·with·functions·that·can | 1162 | refers·to·the·default·I/O·device.·This·is·the·case·with·functions·that·can |
| 1163 | access·either·a·file·or·the·default·I/O·device.·The·atom·<code·class="inline">standard_io</code>·has·this | 1163 | access·either·a·file·or·the·default·I/O·device.·The·atom·<code·class="inline">standard_io</code>·has·this |
| 1164 | special·meaning.·The·following·example·illustrates·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">27>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">read</span><span·class="p"·data-group-id=" | 1164 | special·meaning.·The·following·example·illustrates·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">27>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">read</span><span·class="p"·data-group-id="8410119055-1">(</span><span·class="ss">'enter>'</span><span·class="p"·data-group-id="8410119055-1">)</span><span·class="p">.</span><span·class="w"> |
| 1165 | </span><span·class="ss">enter</span><span·class="o">></span><span·class="ss">foo</span><span·class="p">.</span><span·class="w"> | 1165 | </span><span·class="ss">enter</span><span·class="o">></span><span·class="ss">foo</span><span·class="p">.</span><span·class="w"> |
| 1166 | </span><span·class="p"·data-group-id=" | 1166 | </span><span·class="p"·data-group-id="8410119055-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="ss">foo</span><span·class="p"·data-group-id="8410119055-2">}</span><span·class="gp·unselectable"> |
| 1167 | 28>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">read</span><span·class="p"·data-group-id=" | 1167 | 28>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">read</span><span·class="p"·data-group-id="8410119055-3">(</span><span·class="ss">standard_io</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'enter>'</span><span·class="p"·data-group-id="8410119055-3">)</span><span·class="p">.</span><span·class="w"> |
| 1168 | </span><span·class="ss">enter</span><span·class="o">></span><span·class="ss">bar</span><span·class="p">.</span><span·class="w"> | 1168 | </span><span·class="ss">enter</span><span·class="o">></span><span·class="ss">bar</span><span·class="p">.</span><span·class="w"> |
| 1169 | </span><span·class="p"·data-group-id=" | 1169 | </span><span·class="p"·data-group-id="8410119055-4">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="ss">bar</span><span·class="p"·data-group-id="8410119055-4">}</span></code></pre><p>By·default·all·I/O·sent·to·<code·class="inline">standard_io</code>·will·end·up·in·the·<a·href="#t:user/0"><code·class="inline">user</code></a> |
| 1170 | I/O·device·of·the·node·that·spawned·the·calling·process.</p><p><code·class="inline">standard_io</code>·is·an·alias·for·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#group_leader/0"><code·class="inline">group_leader/0</code></a>,·so·in | 1170 | I/O·device·of·the·node·that·spawned·the·calling·process.</p><p><code·class="inline">standard_io</code>·is·an·alias·for·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#group_leader/0"><code·class="inline">group_leader/0</code></a>,·so·in |
| 1171 | order·to·change·where·the·default·input/output·requests·are·sent·you·can·change | 1171 | order·to·change·where·the·default·input/output·requests·are·sent·you·can·change |
| 1172 | the·group·leader·of·the·current·process·using | 1172 | the·group·leader·of·the·current·process·using |
| 1173 | <a·href="../../../../erts-15.2.3/doc/html/erlang.html#group_leader/2"><code·class="inline">group_leader(NewGroupLeader,·self())</code></a>.</p> | 1173 | <a·href="../../../../erts-15.2.3/doc/html/erlang.html#group_leader/2"><code·class="inline">group_leader(NewGroupLeader,·self())</code></a>.</p> |
| 1174 | ··</section> | 1174 | ··</section> |
| 1175 | </section> | 1175 | </section> |
| 1176 | <section·class="detail"·id="t:user/0"> | 1176 | <section·class="detail"·id="t:user/0"> |
| Offset 1423, 41 lines modified | Offset 1423, 41 lines modified | ||
| 1423 | parameter·is·ignored.·Leading·whitespace·characters·are·not·skipped.</p></li><li><p><strong><code·class="inline">#</code></strong>·-·An·integer·in·base·2-36·with·Erlang-style·base·prefix·(for | 1423 | parameter·is·ignored.·Leading·whitespace·characters·are·not·skipped.</p></li><li><p><strong><code·class="inline">#</code></strong>·-·An·integer·in·base·2-36·with·Erlang-style·base·prefix·(for |
| 1424 | example,·<code·class="inline">"16#ffff"</code>)·is·expected.</p></li><li><p><strong><code·class="inline">f</code></strong>·-·A·floating·point·number·is·expected.·It·must·follow·the·Erlang | 1424 | example,·<code·class="inline">"16#ffff"</code>)·is·expected.</p></li><li><p><strong><code·class="inline">f</code></strong>·-·A·floating·point·number·is·expected.·It·must·follow·the·Erlang |
| 1425 | floating·point·number·syntax.</p></li><li><p><strong><code·class="inline">s</code></strong>·-·A·string·of·non-whitespace·characters·is·read.·If·a·field·width | 1425 | floating·point·number·syntax.</p></li><li><p><strong><code·class="inline">s</code></strong>·-·A·string·of·non-whitespace·characters·is·read.·If·a·field·width |
| 1426 | has·been·specified,·this·number·of·characters·are·read·and·all·trailing | 1426 | has·been·specified,·this·number·of·characters·are·read·and·all·trailing |
| 1427 | whitespace·characters·are·stripped.·An·Erlang·string·(list·of·characters)·is | 1427 | whitespace·characters·are·stripped.·An·Erlang·string·(list·of·characters)·is |
| 1428 | returned.</p><p>If·Unicode·translation·is·in·effect·(<code·class="inline">~ts</code>),·characters·>·255·are·accepted, | 1428 | returned.</p><p>If·Unicode·translation·is·in·effect·(<code·class="inline">~ts</code>),·characters·>·255·are·accepted, |
| 1429 | otherwise·not.·With·the·translation·modifier,·the·returned·list·can·as·a | 1429 | otherwise·not.·With·the·translation·modifier,·the·returned·list·can·as·a |
| 1430 | consequence·also·contain·integers·>·255:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fread</span><span·class="p"·data-group-id=" | 1430 | consequence·also·contain·integers·>·255:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fread</span><span·class="p"·data-group-id="3924929787-1">(</span><span·class="s">"Prompt>·"</span><span·class="p">,</span><span·class="s">"</span><span·class="si">~s</span><span·class="s">"</span><span·class="p"·data-group-id="3924929787-1">)</span><span·class="p">.</span><span·class="w"> |
| 1431 | </span><span·class="n">Prompt</span><span·class="o">></span><span·class="w">·</span><span·class="o"><</span><span·class="n">Characters</span><span·class="w">·</span><span·class="ss">beyond</span><span·class="w">·</span><span·class="ss">latin1</span><span·class="w">·</span><span·class="ss">range</span><span·class="w">·</span><span·class="ow">not</span><span·class="w">·</span><span·class="ss">printable</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">this</span><span·class="w">·</span><span·class="ss">medium</span><span·class="o">></span><span·class="w"> | 1431 | </span><span·class="n">Prompt</span><span·class="o">></span><span·class="w">·</span><span·class="o"><</span><span·class="n">Characters</span><span·class="w">·</span><span·class="ss">beyond</span><span·class="w">·</span><span·class="ss">latin1</span><span·class="w">·</span><span·class="ss">range</span><span·class="w">·</span><span·class="ow">not</span><span·class="w">·</span><span·class="ss">printable</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">this</span><span·class="w">·</span><span·class="ss">medium</span><span·class="o">></span><span·class="w"> |
| 1432 | </span><span·class="p"·data-group-id=" | 1432 | </span><span·class="p"·data-group-id="3924929787-2">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="p"·data-group-id="3924929787-3">{</span><span·class="ss">fread</span><span·class="p">,</span><span·class="ss">string</span><span·class="p"·data-group-id="3924929787-3">[·...·truncated·by·diffoscope;·len:·49,·SHA:·e4a41f5673c2df5d09b0c4f21eef0c264f8cea0bb4e82eb5a8c51dc042eb2e58·...·]-2">}</span><span·class="gp·unselectable"> |
| 1433 | 2>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fread</span><span·class="p"·data-group-id=" | 1433 | 2>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fread</span><span·class="p"·data-group-id="3924929787-4">(</span><span·class="s">"Prompt>·"</span><span·class="p">,</span><span·class="s">"~ts"</span><span·class="p"·data-group-id="3924929787-4">)</span><span·class="p">.</span><span·class="w"> |
| 1434 | </span><span·class="n">Prompt</span><span·class="o">></span><span·class="w">·</span><span·class="o"><</span><span·class="n">Characters</span><span·class="w">·</span><span·class="ss">beyond</span><span·class="w">·</span><span·class="ss">latin1</span><span·class="w">·</span><span·class="ss">range</span><span·class="w">·</span><span·class="ow">not</span><span·class="w">·</span><span·class="ss">printable</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">this</span><span·class="w">·</span><span·class="ss">medium</span><span·class="o">></span><span·class="w"> | 1434 | </span><span·class="n">Prompt</span><span·class="o">></span><span·class="w">·</span><span·class="o"><</span><span·class="n">Characters</span><span·class="w">·</span><span·class="ss">beyond</span><span·class="w">·</span><span·class="ss">latin1</span><span·class="w">·</span><span·class="ss">range</span><span·class="w">·</span><span·class="ow">not</span><span·class="w">·</span><span·class="ss">printable</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">this</span><span·class="w">·</span><span·class="ss">medium</span><span·class="o">></span><span·class="w"> |
| 1435 | </span><span·class="p"·data-group-id=" | 1435 | </span><span·class="p"·data-group-id="3924929787-5">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="3924929787-6">[</span><span·class="p"·data-group-id="3924929787-7">[</span><span·class="mi">1091</span><span·class="p">,</span><span·class="mi">1085</spa[·...·truncated·by·diffoscope;·len:·409,·SHA:·70ab68b609795f83541e0c45389be7cf990859ab09681a41b00721e1ec8d2cfa·...·]-5">}</span></code></pre></li><li><p><strong><code·class="inline">a</code></strong>·-·Similar·to·<code·class="inline">s</code>,·but·the·resulting·string·is·converted·into·an |
| 1436 | atom.</p></li><li><p><strong><code·class="inline">c</code></strong>·-·The·number·of·characters·equal·to·the·field·width·are·read | 1436 | atom.</p></li><li><p><strong><code·class="inline">c</code></strong>·-·The·number·of·characters·equal·to·the·field·width·are·read |
| 1437 | (default·is·1)·and·returned·as·an·Erlang·string.·However,·leading·and | 1437 | (default·is·1)·and·returned·as·an·Erlang·string.·However,·leading·and |
| 1438 | trailing·whitespace·characters·are·not·omitted·as·they·are·with·<code·class="inline">s</code>.·All | 1438 | trailing·whitespace·characters·are·not·omitted·as·they·are·with·<code·class="inline">s</code>.·All |
| 1439 | characters·are·returned.</p><p>The·Unicode·translation·modifier·works·as·with·<code·class="inline">s</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fread</span><span·class="p"·data-group-id=" | 1439 | characters·are·returned.</p><p>The·Unicode·translation·modifier·works·as·with·<code·class="inline">s</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fread</span><span·class="p"·data-group-id="0248737255-1">(</span><span·class="s">"Prompt>·"</span><span·class="p">,</span><span·class="s">"~c"</span><span·class="p"·data-group-id="0248737255-1">)</span><span·class="p">.</span><span·class="w"> |
| 1440 | </span><span·class="n">Prompt</span><span·class="o">></span><span·class="w">·</span><span·class="o"><</span><span·class="n">Character</span><span·class="w">·</span><span·class="ss">beyond</span><span·class="w">·</span><span·class="ss">latin1</span><span·class="w">·</span><span·class="ss">range</span><span·class="w">·</span><span·class="ow">not</span><span·class="w">·</span><span·class="ss">printable</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">this</span><span·class="w">·</span><span·class="ss">medium</span><span·class="o">></span><span·class="w"> | 1440 | </span><span·class="n">Prompt</span><span·class="o">></span><span·class="w">·</span><span·class="o"><</span><span·class="n">Character</span><span·class="w">·</span><span·class="ss">beyond</span><span·class="w">·</span><span·class="ss">latin1</span><span·class="w">·</span><span·class="ss">range</span><span·class="w">·</span><span·class="ow">not</span><span·class="w">·</span><span·class="ss">printable</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">this</span><span·class="w">·</span><span·class="ss">medium</span><span·class="o">></span><span·class="w"> |
| 1441 | </span><span·class="p"·data-group-id=" | 1441 | </span><span·class="p"·data-group-id="0248737255-2">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="p"·data-group-id="0248737255-3">{</span><span·class="ss">fread</span><span·class="p">,</span><span·class="ss">string</span><span·class="p"·data-group-id="0248737255-3">[·...·truncated·by·diffoscope;·len:·49,·SHA:·8be84874d2a73b0e675e7448dfedce2c3491eba912cebe3c93a038cff919a987·...·]-2">}</span><span·class="gp·unselectable"> |
| 1442 | 2>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fread</span><span·class="p"·data-group-id=" | 1442 | 2>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fread</span><span·class="p"·data-group-id="0248737255-4">(</span><span·class="s">"Prompt>·"</span><span·class="p">,</span><span·class="s">"~tc"</span><span·class="p"·data-group-id="0248737255-4">)</span><span·class="p">.</span><span·class="w"> |
| 1443 | </span><span·class="n">Prompt</span><span·class="o">></span><span·class="w">·</span><span·class="o"><</span><span·class="n">Character</span><span·class="w">·</span><span·class="ss">beyond</span><span·class="w">·</span><span·class="ss">latin1</span><span·class="w">·</span><span·class="ss">range</span><span·class="w">·</span><span·class="ow">not</span><span·class="w">·</span><span·class="ss">printable</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">this</span><span·class="w">·</span><span·class="ss">medium</span><span·class="o">></span><span·class="w"> | 1443 | </span><span·class="n">Prompt</span><span·class="o">></span><span·class="w">·</span><span·class="o"><</span><span·class="n">Character</span><span·class="w">·</span><span·class="ss">beyond</span><span·class="w">·</span><span·class="ss">latin1</span><span·class="w">·</span><span·class="ss">range</span><span·class="w">·</span><span·class="ow">not</span><span·class="w">·</span><span·class="ss">printable</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">this</span><span·class="w">·</span><span·class="ss">medium</span><span·class="o">></span><span·class="w"> |
| 1444 | </span><span·class="p"·data-group-id=" | 1444 | </span><span·class="p"·data-group-id="0248737255-5">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="0248737255-6">[</span><span·class="p"·data-group-id="0248737255-7">[</span><span·class="mi">1091</span><span·class="p"·data-group-id="0248737255-7">]</sp[·...·truncated·by·diffoscope;·len:·97,·SHA:·4a2ee2587f61b0143f78cdbdc831845e34b5fa050c1b910ac963fb29a37fded9·...·]-5">}</span></code></pre></li><li><p><strong><code·class="inline">l</code></strong>·-·Returns·the·number·of·characters·that·have·been·scanned·up·to·that |
| 1445 | point,·including·whitespace·characters.</p></li></ul>The·function·returns:<ul><li><p><strong><code·class="inline">{ok,·Terms}</code></strong>·-·The·read·was·successful·and·<code·class="inline">Terms</code>·is·the·list·of | 1445 | point,·including·whitespace·characters.</p></li></ul>The·function·returns:<ul><li><p><strong><code·class="inline">{ok,·Terms}</code></strong>·-·The·read·was·successful·and·<code·class="inline">Terms</code>·is·the·list·of |
| 1446 | successfully·matched·and·read·items.</p></li><li><p><strong><code·class="inline">eof</code></strong>·-·End·of·file·was·encountered.</p></li><li><p><strong><code·class="inline">{error,·FreadError}</code></strong>·-·The·reading·failed·and·<code·class="inline">FreadError</code>·gives·a·hint | 1446 | successfully·matched·and·read·items.</p></li><li><p><strong><code·class="inline">eof</code></strong>·-·End·of·file·was·encountered.</p></li><li><p><strong><code·class="inline">{error,·FreadError}</code></strong>·-·The·reading·failed·and·<code·class="inline">FreadError</code>·gives·a·hint |
| 1447 | about·the·error.</p></li><li><p><strong><code·class="inline">{error,·ErrorDescription}</code></strong>·-·The·read·operation·failed·and·parameter | 1447 | about·the·error.</p></li><li><p><strong><code·class="inline">{error,·ErrorDescription}</code></strong>·-·The·read·operation·failed·and·parameter |
| 1448 | <code·class="inline">ErrorDescription</code>·gives·a·hint·about·the·error.</p></li></ul></li></ul><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">20>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fread</span><span·class="p"·data-group-id=" | 1448 | <code·class="inline">ErrorDescription</code>·gives·a·hint·about·the·error.</p></li></ul></li></ul><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">20>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fread</span><span·class="p"·data-group-id="5449138122-1">(</span><span·class="ss">'enter>'</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"~f~f~f"</span><span·class="p"·data-group-id="5449138122-1">)</span><span·class="p">.</span><span·class="w"> |
| 1449 | </span><span·class="ss">enter</span><span·class="o">></span><span·class="mf">1.9</span><span·class="w">·</span><span·class="mf">35.5e3</span><span·class="w">·</span><span·class="mf">15.0</span><span·class="w"> | 1449 | </span><span·class="ss">enter</span><span·class="o">></span><span·class="mf">1.9</span><span·class="w">·</span><span·class="mf">35.5e3</span><span·class="w">·</span><span·class="mf">15.0</span><span·class="w"> |
| 1450 | </span><span·class="p"·data-group-id=" | 1450 | </span><span·class="p"·data-group-id="5449138122-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="5449138122-3">[</span><span·class="mf">1.9</span><span·class="p">,</span><span·class="mf">3.55e4</span><span·class="p">,</span><span·class="mf">15.0</spa[·...·truncated·by·diffoscope;·len:·96,·SHA:·8c236ef7616021566870fc4091890c8865f3241bf031b2d2d07fc01b3ba5f368·...·]-2">}</span><span·class="gp·unselectable"> |
| 1451 | 21>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fread</span><span·class="p"·data-group-id=" | 1451 | 21>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fread</span><span·class="p"·data-group-id="5449138122-4">(</span><span·class="ss">'enter>'</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"~10f~d"</span><span·class="p"·data-group-id="5449138122-4">)</span><span·class="p">.</span><span·class="w"> |
| 1452 | </span><span·class="ss">enter</span><span·class="o">></span><span·class="w">·····</span><span·class="mf">5.67899</span><span·class="w"> | 1452 | </span><span·class="ss">enter</span><span·class="o">></span><span·class="w">·····</span><span·class="mf">5.67899</span><span·class="w"> |
| 1453 | </span><span·class="p"·data-group-id=" | 1453 | </span><span·class="p"·data-group-id="5449138122-5">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="5449138122-6">[</span><span·class="mf">5.678</span><span·class="p">,</span><span·class="mi">99</span><span·class="p"·data-group-id="5449138122-6">]</span[·...·truncated·by·diffoscope;·len:·42,·SHA:·fdf1e4e82e856fd61979dd21b16d7288162dba5d261fb462664de74d84e45c17·...·]-5">}</span><span·class="gp·unselectable"> |
| 1454 | 22>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fread</span><span·class="p"·data-group-id=" | 1454 | 22>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fread</span><span·class="p"·data-group-id="5449138122-7">(</span><span·class="ss">'enter>'</span><span·class="p">,</span><span·class="w">·</span><span·class="s">":</span><span·class="si">~10s</span><span·class="s">:~10c:"</span><span·class="p"·data-group-id="5449138122-7">)</span><span·class="p">.</span><span·class="w"> |
| 1455 | </span><span·class="ss">enter</span><span·class="o">></span><span·class="p">:</span><span·class="w">···</span><span·class="ss">alan</span><span·class="w">···</span><span·class="p">:</span><span·class="w">···</span><span·class="ss">joe</span><span·class="w">····</span><span·class="p">:</span><span·class="w"> | 1455 | </span><span·class="ss">enter</span><span·class="o">></span><span·class="p">:</span><span·class="w">···</span><span·class="ss">alan</span><span·class="w">···</span><span·class="p">:</span><span·class="w">···</span><span·class="ss">joe</span><span·class="w">····</span><span·class="p">:</span><span·class="w"> |
| 1456 | </span><span·class="p"·data-group-id=" | 1456 | </span><span·class="p"·data-group-id="5449138122-8">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5449138122-9">[</span><span·class="s">"alan"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">&quo[·...·truncated·by·diffoscope;·len:·119,·SHA:·7bc1dd7722f0832b032c7386c1674470535a53b5e625d47e0fc14dbd049d79a7·...·]-8">}</span></code></pre> |
| 1457 | ··</section> | 1457 | ··</section> |
| 1458 | </section> | 1458 | </section> |
| 1459 | <section·class="detail"·id="fwrite/1"> | 1459 | <section·class="detail"·id="fwrite/1"> |
| 1460 | ··<div·class="detail-header"> | 1460 | ··<div·class="detail-header"> |
| 1461 | ····<a·href="#fwrite/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1461 | ····<a·href="#fwrite/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1462 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1462 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 1532, 15 lines modified | Offset 1532, 15 lines modified | ||
| 1532 | ······</div> | 1532 | ······</div> |
| 1533 | <p>Writes·the·items·in·<code·class="inline">Data</code>·on·the·<a·href="#t:device/0"><code·class="inline">IoDevice</code></a>·in·accordance·with·<code·class="inline">Format</code>.</p><p><code·class="inline">Format</code>·contains·plain·characters·that·are·copied·to | 1533 | <p>Writes·the·items·in·<code·class="inline">Data</code>·on·the·<a·href="#t:device/0"><code·class="inline">IoDevice</code></a>·in·accordance·with·<code·class="inline">Format</code>.</p><p><code·class="inline">Format</code>·contains·plain·characters·that·are·copied·to |
| 1534 | the·output·device,·and·control·sequences·for·formatting,·see·below.·If·<code·class="inline">Format</code> | 1534 | the·output·device,·and·control·sequences·for·formatting,·see·below.·If·<code·class="inline">Format</code> |
| 1535 | is·an·atom·or·a·binary,·it·is·first·converted·to·a·list·with·the·aid·of | 1535 | is·an·atom·or·a·binary,·it·is·first·converted·to·a·list·with·the·aid·of |
| 1536 | <a·href="../../../../erts-15.2.3/doc/html/erlang.html#atom_to_list/1"><code·class="inline">atom_to_list/1</code></a>·or | 1536 | <a·href="../../../../erts-15.2.3/doc/html/erlang.html#atom_to_list/1"><code·class="inline">atom_to_list/1</code></a>·or |
| 1537 | <a·href="../../../../erts-15.2.3/doc/html/erlang.html#binary_to_list/1"><code·class="inline">binary_to_list/1</code></a>.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fwrite</span><span·class="p"·data-group-id=" | 1537 | <a·href="../../../../erts-15.2.3/doc/html/erlang.html#binary_to_list/1"><code·class="inline">binary_to_list/1</code></a>.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fwrite</span><span·class="p"·data-group-id="4434727660-1">(</span><span·class="s">"Hello·world!</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4434727660-2">[</span><span·class="p"·data-group-id="443472[·...·truncated·by·diffoscope;·len:·57,·SHA:·107a428202c45f5f12c5061bb7378577bc17caff8a04878945d405bd7d2df532·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 1538 | </span><span·class="n">Hello</span><span·class="w">·</span><span·class="ss">world</span><span·class="o">!</span><span·class="w"> | 1538 | </span><span·class="n">Hello</span><span·class="w">·</span><span·class="ss">world</span><span·class="o">!</span><span·class="w"> |
| 1539 | </span><span·class="ss">ok</span></code></pre><p>The·general·format·of·a·control·sequence·is·<code·class="inline">~F.P.PadModC</code>.</p><p>The·character·<code·class="inline">C</code>·determines·the·type·of·control·sequence·to·be·used.·It·is·the | 1539 | </span><span·class="ss">ok</span></code></pre><p>The·general·format·of·a·control·sequence·is·<code·class="inline">~F.P.PadModC</code>.</p><p>The·character·<code·class="inline">C</code>·determines·the·type·of·control·sequence·to·be·used.·It·is·the |
| 1540 | only·required·field.·All·of·<code·class="inline">F</code>,·<code·class="inline">P</code>,·<code·class="inline">Pad</code>,·and·<code·class="inline">Mod</code>·are·optional.·For | 1540 | only·required·field.·All·of·<code·class="inline">F</code>,·<code·class="inline">P</code>,·<code·class="inline">Pad</code>,·and·<code·class="inline">Mod</code>·are·optional.·For |
| 1541 | example,·to·use·a·<code·class="inline">#</code>·for·<code·class="inline">Pad</code>·but·use·the·default·values·for·<code·class="inline">F</code>·and·<code·class="inline">P</code>,·you | 1541 | example,·to·use·a·<code·class="inline">#</code>·for·<code·class="inline">Pad</code>·but·use·the·default·values·for·<code·class="inline">F</code>·and·<code·class="inline">P</code>,·you |
| 1542 | can·write·<code·class="inline">~..#C</code>.</p><ul><li><p><code·class="inline">F</code>·is·the·<code·class="inline">field·width</code>·of·the·printed·argument.·A·negative·value·means·that | 1542 | can·write·<code·class="inline">~..#C</code>.</p><ul><li><p><code·class="inline">F</code>·is·the·<code·class="inline">field·width</code>·of·the·printed·argument.·A·negative·value·means·that |
| 1543 | the·argument·is·left-justified·within·the·field,·otherwise·right-justified.·If | 1543 | the·argument·is·left-justified·within·the·field,·otherwise·right-justified.·If |
| 1544 | no·field·width·is·specified,·the·required·print·width·is·used.·If·the·field | 1544 | no·field·width·is·specified,·the·required·print·width·is·used.·If·the·field |
| Offset 1550, 33 lines modified | Offset 1550, 33 lines modified | ||
| 1550 | print·width.</p></li><li><p><code·class="inline">Pad</code>·is·the·padding·character.·This·is·the·character·used·to·pad·the·printed | 1550 | print·width.</p></li><li><p><code·class="inline">Pad</code>·is·the·padding·character.·This·is·the·character·used·to·pad·the·printed |
| 1551 | representation·of·the·argument·so·that·it·conforms·to·the·specified·field | 1551 | representation·of·the·argument·so·that·it·conforms·to·the·specified·field |
| 1552 | width·and·precision.·Only·one·padding·character·can·be·specified·and,·whenever | 1552 | width·and·precision.·Only·one·padding·character·can·be·specified·and,·whenever |
| 1553 | applicable,·it·is·used·for·both·the·field·width·and·precision.·The·default | 1553 | applicable,·it·is·used·for·both·the·field·width·and·precision.·The·default |
| 1554 | padding·character·is·<code·class="inline">'·'</code>·(space).</p></li><li><p><code·class="inline">Mod</code>·is·the·control·sequence·modifier.·This·is·one·or·more·characters·that | 1554 | padding·character·is·<code·class="inline">'·'</code>·(space).</p></li><li><p><code·class="inline">Mod</code>·is·the·control·sequence·modifier.·This·is·one·or·more·characters·that |
| 1555 | change·the·interpretation·of·<code·class="inline">Data</code>.</p><p>The·current·modifiers·are:</p><ul><li><p><strong><code·class="inline">t</code></strong>·-·For·Unicode·translation.</p></li><li><p><strong><code·class="inline">l</code></strong>·-·For·stopping·<code·class="inline">p</code>·and·<code·class="inline">P</code>·from·detecting·printable·characters.</p></li><li><p><strong><code·class="inline">k</code></strong>·-·For·use·with·<code·class="inline">p</code>,·<code·class="inline">P</code>,·<code·class="inline">w</code>,·and·<code·class="inline">W</code>·to·format·maps·in·map-key | 1555 | change·the·interpretation·of·<code·class="inline">Data</code>.</p><p>The·current·modifiers·are:</p><ul><li><p><strong><code·class="inline">t</code></strong>·-·For·Unicode·translation.</p></li><li><p><strong><code·class="inline">l</code></strong>·-·For·stopping·<code·class="inline">p</code>·and·<code·class="inline">P</code>·from·detecting·printable·characters.</p></li><li><p><strong><code·class="inline">k</code></strong>·-·For·use·with·<code·class="inline">p</code>,·<code·class="inline">P</code>,·<code·class="inline">w</code>,·and·<code·class="inline">W</code>·to·format·maps·in·map-key |
| 1556 | <code·class="inline">ordered</code>·order·(see·<a·href="maps.html#t:iterator_order/0"><code·class="inline">maps:iterator_order/0</code></a>).</p></li><li><p><strong><code·class="inline">K</code></strong>·-·Similar·to·<code·class="inline">k</code>,·for·formatting·maps·in·map-key·order,·but·takes·an | 1556 | <code·class="inline">ordered</code>·order·(see·<a·href="maps.html#t:iterator_order/0"><code·class="inline">maps:iterator_order/0</code></a>).</p></li><li><p><strong><code·class="inline">K</code></strong>·-·Similar·to·<code·class="inline">k</code>,·for·formatting·maps·in·map-key·order,·but·takes·an |
| 1557 | extra·argument·that·specifies·the·<a·href="maps.html#t:iterator_order/0"><code·class="inline">maps:iterator_order/0</code></a>.</p><p>For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">M</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 1557 | extra·argument·that·specifies·the·<a·href="maps.html#t:iterator_order/0"><code·class="inline">maps:iterator_order/0</code></a>.</p><p>For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">M</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="1308600170-1">#{</span><span·class="w">·</span><span·class="ss">a</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">b</span><span·clas[·...·truncated·by·diffoscope;·len:·156,·SHA:·6299be36ab14a592c6b2beb9e4d5c1bce23a6895b986e6802a7307b18762c91e·...·]-1">}</span><span·class="p">.</span><span·class="w"> |
| 1558 | </span><span·class="p"·data-group-id=" | 1558 | </span><span·class="p"·data-group-id="1308600170-2">#{</span><span·class="ss">a</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="ss">b</span><span·class="w">·</span><span·class="p">=></span><span·[·...·truncated·by·diffoscope;·len:·84,·SHA:·c0b93b853e40d76f3f1c520316c935724d5608647279d649e64a24d7e2badc4a·...·]-2">}</span><span·class="gp·unselectable"> |
| 1559 | >·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 1559 | >·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="1308600170-3">(</span><span·class="s">"~Kp</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1308600170-4">[</span><span·class="ss">reversed</span><span·class="p[·...·truncated·by·diffoscope;·len:·152,·SHA:·1a0e603ff713f7183068e9e43ce96a363d86a35a2167a3fc195f25178044cab2·...·]-3">)</span><span·class="p">.</span><span·class="w"> |
| 1560 | </span><span·class="p"·data-group-id=" | 1560 | </span><span·class="p"·data-group-id="1308600170-5">#{</span><span·class="ss">b</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">2</span><span·class="p">,</span><span·class="ss">a</span><span·class="w">·</span><span·class="p">=></span><span·[·...·truncated·by·diffoscope;·len:·84,·SHA:·fb1cf14825a5e7c8f46b74e73bddf53a6df0c1c1b9abbb11a77dff5caac78774·...·]-5">}</span><span·class="w"> |
| 1561 | </span><span·class="ss">ok</span></code></pre></li></ul></li></ul><p>If·<code·class="inline">F</code>,·<code·class="inline">P</code>,·or·<code·class="inline">Pad</code>·is·a·<code·class="inline">*</code>·character,·the·next·argument·in·<code·class="inline">Data</code>·is·used·as | 1561 | </span><span·class="ss">ok</span></code></pre></li></ul></li></ul><p>If·<code·class="inline">F</code>,·<code·class="inline">P</code>,·or·<code·class="inline">Pad</code>·is·a·<code·class="inline">*</code>·character,·the·next·argument·in·<code·class="inline">Data</code>·is·used·as |
| 1562 | the·value.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fwrite</span><span·class="p"·data-group-id=" | 1562 | the·value.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fwrite</span><span·class="p"·data-group-id="7348377774-1">(</span><span·class="s">"~*.*.0f</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="p"·data-group-id="7348377774-2">[</span><span·class="mi">9</span><span·class="p">,</span><span·class="w">·[·...·truncated·by·diffoscope;·len:·208,·SHA:·6a41e75aad1a068f79c68e65dada25585b53517e4a60f7059acb823d721e3229·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 1563 | </span><span·class="mf">003.14159</span><span·class="w"> | 1563 | </span><span·class="mf">003.14159</span><span·class="w"> |
| 1564 | </span><span·class="ss">ok</span></code></pre><p>To·use·a·literal·<code·class="inline">*</code>·character·as·<code·class="inline">Pad</code>,·it·must·be·passed·as·an·argument:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fwrite</span><span·class="p"·data-group-id="4 | 1564 | </span><span·class="ss">ok</span></code></pre><p>To·use·a·literal·<code·class="inline">*</code>·character·as·<code·class="inline">Pad</code>,·it·must·be·passed·as·an·argument:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fwrite</span><span·class="p"·data-group-id="0462724731-1">(</span><span·class="s">"~*.*.*f</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="p"·data-group-id="0462724731-2">[</span><span·class="mi">9</span><span·class="p">,</span><span·class="w">·[·...·truncated·by·diffoscope;·len:·282,·SHA:·a014a8a5e9d3b445a7846ec1dfb672e334d86166145a61944ada1d4feb87695c·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 1565 | </span><span·class="o">*</span><span·class="o">*</span><span·class="mf">3.14159</span><span·class="w"> | 1565 | </span><span·class="o">*</span><span·class="o">*</span><span·class="mf">3.14159</span><span·class="w"> |
| 1566 | </span><span·class="ss">ok</span></code></pre><p><em>Available·control·sequences:</em></p><ul><li><p><strong><code·class="inline">~</code></strong>·-·Character·<code·class="inline">~</code>·is·written.</p></li><li><p><strong><code·class="inline">c</code></strong>·-·The·argument·is·a·number·that·is·interpreted·as·an·ASCII·code.·The | 1566 | </span><span·class="ss">ok</span></code></pre><p><em>Available·control·sequences:</em></p><ul><li><p><strong><code·class="inline">~</code></strong>·-·Character·<code·class="inline">~</code>·is·written.</p></li><li><p><strong><code·class="inline">c</code></strong>·-·The·argument·is·a·number·that·is·interpreted·as·an·ASCII·code.·The |
| 1567 | precision·is·the·number·of·times·the·character·is·printed·and·defaults·to·the | 1567 | precision·is·the·number·of·times·the·character·is·printed·and·defaults·to·the |
| 1568 | field·width,·which·in·turn·defaults·to·1.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fwrite</span><span·class="p"·data-group-id="1 | 1568 | field·width,·which·in·turn·defaults·to·1.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fwrite</span><span·class="p"·data-group-id="1858129905-1">(</span><span·class="s">"|~10.5c|</span><span·class="si">~-</span><span·class="s">10.5c|~5c|</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="18581[·...·truncated·by·diffoscope;·len:·285,·SHA:·a553692725f235d56a9d4ff6a36f7cbfa5616510f8134c7bd254e26317da58db·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 1569 | </span><span·class="p">|</span><span·class="w">·····</span><span·class="ss">aaaaa</span><span·class="p">|</span><span·class="ss">bbbbb</span><span·class="w">·····</span><span·class="p">|</span><span·class="ss">ccccc</span><span·class="p">|</span><span·class="w"> | 1569 | </span><span·class="p">|</span><span·class="w">·····</span><span·class="ss">aaaaa</span><span·class="p">|</span><span·class="ss">bbbbb</span><span·class="w">·····</span><span·class="p">|</span><span·class="ss">ccccc</span><span·class="p">|</span><span·class="w"> |
| 1570 | </span><span·class="ss">ok</span></code></pre><p>If·the·Unicode·translation·modifier·(<code·class="inline">t</code>)·is·in·effect,·the·integer·argument | 1570 | </span><span·class="ss">ok</span></code></pre><p>If·the·Unicode·translation·modifier·(<code·class="inline">t</code>)·is·in·effect,·the·integer·argument |
| 1571 | can·be·any·number·representing·a·valid·Unicode·codepoint,·otherwise·it·is·to | 1571 | can·be·any·number·representing·a·valid·Unicode·codepoint,·otherwise·it·is·to |
| 1572 | be·an·integer·less·than·or·equal·to·255,·otherwise·it·is·masked·with·16#FF:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fwrite</span><span·class="p"·data-group-id=" | 1572 | be·an·integer·less·than·or·equal·to·255,·otherwise·it·is·masked·with·16#FF:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fwrite</span><span·class="p"·data-group-id="5015950053-1">(</span><span·class="s">"~tc</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="p"·data-group-id="5015950053-2">[</span><span·class="mi">1024</span><span·class="p"·data-group-id="5015950053-[·...·truncated·by·diffoscope;·len:·52,·SHA:·5f6ea05701df6bc9f95797eea55e7df4480eada280bdc623f2ec8097b3b31dbf·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 1573 | </span><span·class="err">\</span><span·class="ss">x</span><span·class="p"·data-group-id=" | 1573 | </span><span·class="err">\</span><span·class="ss">x</span><span·class="p"·data-group-id="5015950053-3">{</span><span·class="mi">400</span><span·class="p"·data-group-id="5015950053-3">}</span><span·class="w"> |
| 1574 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 1574 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 1575 | 3>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fwrite</span><span·class="p"·data-group-id=" | 1575 | 3>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">fwrite</span><span·class="p"·data-group-id="5015950053-4">(</span><span·class="s">"~c</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="p"·data-group-id="5015950053-5">[</span><span·class="mi">1024</span><span·class="p"·data-group-id="5015950053-5[·...·truncated·by·diffoscope;·len:·51,·SHA:·253edcce438b0b32ae05529f4a928881b0195479d25ce1c6a7c610cba90923d9·...·]-4">)</span><span·class="p">.</span><span·class="w"> |
| 1576 | </span><span·class="err">^</span><span·class="p">@</span><span·class="w"> | 1576 | </span><span·class="err">^</span><span·class="p">@</span><span·class="w"> |
| 1577 | </span><span·class="ss">ok</span></code></pre></li><li><p><strong><code·class="inline">f</code></strong>·-·The·argument·is·a·float·that·is·written·as·<code·class="inline">[-]ddd.ddd</code>,·where·the | 1577 | </span><span·class="ss">ok</span></code></pre></li><li><p><strong><code·class="inline">f</code></strong>·-·The·argument·is·a·float·that·is·written·as·<code·class="inline">[-]ddd.ddd</code>,·where·the |
| 1578 | precision·is·the·number·of·digits·after·the·decimal·point.·The·default | 1578 | precision·is·the·number·of·digits·after·the·decimal·point.·The·default |
| 1579 | precision·is·6·and·it·cannot·be·<·1.</p></li><li><p><strong><code·class="inline">e</code></strong>·-·The·argument·is·a·float·that·is·written·as·<code·class="inline">[-]d.ddde+-ddd</code>,·where | 1579 | precision·is·6·and·it·cannot·be·<·1.</p></li><li><p><strong><code·class="inline">e</code></strong>·-·The·argument·is·a·float·that·is·written·as·<code·class="inline">[-]d.ddde+-ddd</code>,·where |
| 1580 | the·precision·is·the·number·of·digits·written.·The·default·precision·is·6·and | 1580 | the·precision·is·the·number·of·digits·written.·The·default·precision·is·6·and |
| 1581 | it·cannot·be·<·2.</p></li><li><p><strong><code·class="inline">g</code></strong>·-·The·argument·is·a·float·that·is·written·as·<code·class="inline">f</code>,·if·it·is·>=·0.1·and | 1581 | it·cannot·be·<·2.</p></li><li><p><strong><code·class="inline">g</code></strong>·-·The·argument·is·a·float·that·is·written·as·<code·class="inline">f</code>,·if·it·is·>=·0.1·and |
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| Offset 998, 16 lines modified | Offset 998, 16 lines modified | ||
| 998 | <p>Tries·to·read·<code·class="inline">String</code>·in·accordance·with·the·control·sequences·in·<code·class="inline">Format</code>.</p><p>For·a·detailed·description·of·the·available·formatting·options,·see·<a·href="io.html#fread/3"><code·class="inline">io:fread/3</code></a>. | 998 | <p>Tries·to·read·<code·class="inline">String</code>·in·accordance·with·the·control·sequences·in·<code·class="inline">Format</code>.</p><p>For·a·detailed·description·of·the·available·formatting·options,·see·<a·href="io.html#fread/3"><code·class="inline">io:fread/3</code></a>. |
| 999 | It·is·assumed·that·<code·class="inline">String</code>·contains·whole·lines.</p><p>The·function·returns:</p><ul><li><p><strong><code·class="inline">{ok,·InputList,·LeftOverChars}</code></strong>·-·The·string·was·read.·<code·class="inline">InputList</code>·is·the | 999 | It·is·assumed·that·<code·class="inline">String</code>·contains·whole·lines.</p><p>The·function·returns:</p><ul><li><p><strong><code·class="inline">{ok,·InputList,·LeftOverChars}</code></strong>·-·The·string·was·read.·<code·class="inline">InputList</code>·is·the |
| 1000 | list·of·successfully·matched·and·read·items,·and·<code·class="inline">LeftOverChars</code>·are·the·input | 1000 | list·of·successfully·matched·and·read·items,·and·<code·class="inline">LeftOverChars</code>·are·the·input |
| 1001 | characters·not·used.</p></li><li><p><strong><code·class="inline">{more,·RestFormat,·Nchars,·InputStack}</code></strong>·-·The·string·was·read,·but·more | 1001 | characters·not·used.</p></li><li><p><strong><code·class="inline">{more,·RestFormat,·Nchars,·InputStack}</code></strong>·-·The·string·was·read,·but·more |
| 1002 | input·is·needed·to·complete·the·original·format·string.·<code·class="inline">RestFormat</code>·is·the | 1002 | input·is·needed·to·complete·the·original·format·string.·<code·class="inline">RestFormat</code>·is·the |
| 1003 | remaining·format·string,·<code·class="inline">Nchars</code>·is·the·number·of·characters·scanned,·and | 1003 | remaining·format·string,·<code·class="inline">Nchars</code>·is·the·number·of·characters·scanned,·and |
| 1004 | <code·class="inline">InputStack</code>·is·the·reversed·list·of·inputs·matched·up·to·that·point.</p></li><li><p><strong><code·class="inline">{error,·What}</code></strong>·-·The·read·operation·failed·and·parameter·<code·class="inline">What</code>·gives·a | 1004 | <code·class="inline">InputStack</code>·is·the·reversed·list·of·inputs·matched·up·to·that·point.</p></li><li><p><strong><code·class="inline">{error,·What}</code></strong>·-·The·read·operation·failed·and·parameter·<code·class="inline">What</code>·gives·a |
| 1005 | hint·about·the·error.</p></li></ul><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="nc">io_lib</span><span·class="p">:</span><span·class="nf">fread</span><span·class="p"·data-group-id=" | 1005 | hint·about·the·error.</p></li></ul><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="nc">io_lib</span><span·class="p">:</span><span·class="nf">fread</span><span·class="p"·data-group-id="4732334525-1">(</span><span·class="s">"~f~f~f"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"15.6·17.3e-6·24.5"</span><span·class="p"·data-group-id="4732334525-1">)</span><span·class="p">.</span><span·class="w"> |
| 1006 | </span><span·class="p"·data-group-id=" | 1006 | </span><span·class="p"·data-group-id="4732334525-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="4732334525-3">[</span><span·class="mf">15.6</span><span·class="p">,</span><span·class="mf">1.73e-5</span><span·class="p">,</span><span·class="mf">24.5</s[·...·truncated·by·diffoscope;·len:·228,·SHA:·2e0b8b61421fa743b08c7059e49af2ba6258a97830bdfe7dbf7124adf6d020cf·...·]-2">}</span></code></pre> |
| 1007 | ··</section> | 1007 | ··</section> |
| 1008 | </section> | 1008 | </section> |
| 1009 | <section·class="detail"·id="fread/3"> | 1009 | <section·class="detail"·id="fread/3"> |
| 1010 | ··<div·class="detail-header"> | 1010 | ··<div·class="detail-header"> |
| 1011 | ····<a·href="#fread/3"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1011 | ····<a·href="#fread/3"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1012 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1012 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 1474, 19 lines modified | Offset 1474, 19 lines modified | ||
| 1474 | ······</div> | 1474 | ······</div> |
| 1475 | <p>Returns·a·character·list·that·represents·<code·class="inline">Term</code>.·Option·<code·class="inline">Depth</code>·controls·the | 1475 | <p>Returns·a·character·list·that·represents·<code·class="inline">Term</code>.·Option·<code·class="inline">Depth</code>·controls·the |
| 1476 | depth·of·the·structures·written.</p><p>When·the·specified·depth·is·reached,·everything·below·this·level·is·replaced·by | 1476 | depth·of·the·structures·written.</p><p>When·the·specified·depth·is·reached,·everything·below·this·level·is·replaced·by |
| 1477 | "<code·class="inline">...</code>".</p><p><code·class="inline">Depth</code>·defaults·to·-1,·which·means·no·limitation.·Option·<code·class="inline">CharsLimit</code>·puts·a | 1477 | "<code·class="inline">...</code>".</p><p><code·class="inline">Depth</code>·defaults·to·-1,·which·means·no·limitation.·Option·<code·class="inline">CharsLimit</code>·puts·a |
| 1478 | soft·limit·on·the·number·of·characters·returned.·When·the·number·of·characters·is | 1478 | soft·limit·on·the·number·of·characters·returned.·When·the·number·of·characters·is |
| 1479 | reached,·remaining·structures·are·replaced·by·"<code·class="inline">...</code>".·<code·class="inline">CharsLimit</code>·defaults·to·-1, | 1479 | reached,·remaining·structures·are·replaced·by·"<code·class="inline">...</code>".·<code·class="inline">CharsLimit</code>·defaults·to·-1, |
| 1480 | which·means·no·limit·on·the·number·of·characters·returned.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">flatten</span><span·class="p"·data-group-id=" | 1480 | which·means·no·limit·on·the·number·of·characters·returned.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">flatten</span><span·class="p"·data-group-id="4517000961-1">(</span><span·class="nc">io_lib</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id="4517000961-2">(</span><span·class="p"·data-group-id="4517000961-3">{</span><span·class="mi">1</span><span·class="p">,</s[·...·truncated·by·diffoscope;·len:·837,·SHA:·433a40b010ecb43f3fa7e922050ec51d4e81c910d554a4457ab389258acf78b5·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 1481 | </span><span·class="s">"{1,[2],[3],[4,5],6,7,8,9}"</span><span·class="gp·unselectable"> | 1481 | </span><span·class="s">"{1,[2],[3],[4,5],6,7,8,9}"</span><span·class="gp·unselectable"> |
| 1482 | 2>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">flatten</span><span·class="p"·data-group-id=" | 1482 | 2>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">flatten</span><span·class="p"·data-group-id="4517000961-7">(</span><span·class="nc">io_lib</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id="4517000961-8">(</span><span·class="p"·data-group-id="4517000961-9">{</span><span·class="mi">1</span><span·class="p">,</s[·...·truncated·by·diffoscope;·len:·916,·SHA:·3aee6ad8e1da78f419dd62d1d8784495e4cd9a2edd5f8ccebcbadb55bbd92483·...·]-7">)</span><span·class="p">.</span><span·class="w"> |
| 1483 | </span><span·class="s">"{1,[2],[3],[...],...}"</span><span·class="gp·unselectable"> | 1483 | </span><span·class="s">"{1,[2],[3],[...],...}"</span><span·class="gp·unselectable"> |
| 1484 | 3>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">flatten</span><span·class="p"·data-group-id=" | 1484 | 3>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">flatten</span><span·class="p"·data-group-id="4517000961-13">(</span><span·class="nc">io_lib</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id="4517000961-14">(</span><span·class="p"·data-group-id="4517000961-15">{</span><span·class="p"·data-group-id="4517000961-[·...·truncated·by·diffoscope;·len:·1089,·SHA:·59ce0a3f8cd6f6dbffb95817ffd67cfd33ef3df1073fbd80c0ee1d76b537373f·...·]-13">)</span><span·class="p">.</span><span·class="w"> |
| 1485 | </span><span·class="s">"{[1,2|...],[4|...],...}"</span></code></pre> | 1485 | </span><span·class="s">"{[1,2|...],[4|...],...}"</span></code></pre> |
| 1486 | ··</section> | 1486 | ··</section> |
| 1487 | </section> | 1487 | </section> |
| 1488 | <section·class="detail"·id="write_atom/1"> | 1488 | <section·class="detail"·id="write_atom/1"> |
| 1489 | ··<div·class="detail-header"> | 1489 | ··<div·class="detail-header"> |
| 1490 | ····<a·href="#write_atom/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1490 | ····<a·href="#write_atom/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 142, 16 lines modified | Offset 142, 16 lines modified | ||
| 142 | I/O·server·communicates·with.</p><h2·id="protocol-basics"·class="section-heading"> | 142 | I/O·server·communicates·with.</p><h2·id="protocol-basics"·class="section-heading"> |
| 143 | ··<a·href="#protocol-basics"·class="hover-link"> | 143 | ··<a·href="#protocol-basics"·class="hover-link"> |
| 144 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 144 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 145 | ··</a> | 145 | ··</a> |
| 146 | ··<span·class="text">Protocol·Basics</span> | 146 | ··<span·class="text">Protocol·Basics</span> |
| 147 | </h2> | 147 | </h2> |
| 148 | <p>As·described·in·Robert's·paper,·I/O·servers·and·clients·communicate·using | 148 | <p>As·described·in·Robert's·paper,·I/O·servers·and·clients·communicate·using |
| 149 | <code·class="inline">io_request</code>/<code·class="inline">io_reply</code>·tuples·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 149 | <code·class="inline">io_request</code>/<code·class="inline">io_reply</code>·tuples·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="9788208961-1">{</span><span·class="ss">io_request</span><span·class="p">,</span><span·class="w">·</span><span·class="n">From</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ReplyAs</span><span·class="p">,</span><span·class="w">·</span[·...·truncated·by·diffoscope;·len:·72,·SHA:·47f11d271c5c57b9663740edebea69167546340319bd37692f183a20723b9103·...·]-1">}</span><span·class="w"> |
| 150 | </span><span·class="p"·data-group-id=" | 150 | </span><span·class="p"·data-group-id="9788208961-2">{</span><span·class="ss">io_reply</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ReplyAs</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reply</span><span·class="p"·data-group-id="9788208961-2">}</span></code></pre><p>The·client·sends·an·<code·class="inline">io_request</code>·tuple·to·the·I/O·server·and·the·server |
| 151 | eventually·sends·a·corresponding·<code·class="inline">io_reply</code>·tuple.</p><ul><li><p><code·class="inline">From</code>·is·the·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:pid/0"><code·class="inline">pid/0</code></a>·of·the·client,·the·process·which·the·I/O·server·sends | 151 | eventually·sends·a·corresponding·<code·class="inline">io_reply</code>·tuple.</p><ul><li><p><code·class="inline">From</code>·is·the·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:pid/0"><code·class="inline">pid/0</code></a>·of·the·client,·the·process·which·the·I/O·server·sends |
| 152 | the·I/O·reply·to.</p></li><li><p><code·class="inline">ReplyAs</code>·can·be·any·datum·and·is·returned·in·the·corresponding·<code·class="inline">io_reply</code>. | 152 | the·I/O·reply·to.</p></li><li><p><code·class="inline">ReplyAs</code>·can·be·any·datum·and·is·returned·in·the·corresponding·<code·class="inline">io_reply</code>. |
| 153 | The·<a·href="io.html"><code·class="inline">io</code></a>·module·monitors·the·I/O·server·and·uses·the·monitor·reference·as | 153 | The·<a·href="io.html"><code·class="inline">io</code></a>·module·monitors·the·I/O·server·and·uses·the·monitor·reference·as |
| 154 | the·<code·class="inline">ReplyAs</code>·datum.·A·more·complicated·client·can·have·many·outstanding·I/O | 154 | the·<code·class="inline">ReplyAs</code>·datum.·A·more·complicated·client·can·have·many·outstanding·I/O |
| 155 | requests·to·the·same·I/O·server·and·can·use·different·references·(or·something | 155 | requests·to·the·same·I/O·server·and·can·use·different·references·(or·something |
| 156 | else)·to·differentiate·among·the·incoming·I/O·replies.·Element·<code·class="inline">ReplyAs</code>·is·to | 156 | else)·to·differentiate·among·the·incoming·I/O·replies.·Element·<code·class="inline">ReplyAs</code>·is·to |
| 157 | be·considered·opaque·by·the·I/O·server.</p><p>Notice·that·the·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:pid/0"><code·class="inline">pid/0</code></a>·of·the·I/O·server·is·not·explicitly·present·in·tuple | 157 | be·considered·opaque·by·the·I/O·server.</p><p>Notice·that·the·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:pid/0"><code·class="inline">pid/0</code></a>·of·the·I/O·server·is·not·explicitly·present·in·tuple |
| Offset 160, 16 lines modified | Offset 160, 16 lines modified | ||
| 160 | part·and·eventually·sends·an·<code·class="inline">io_reply</code>·tuple·with·the·corresponding·<code·class="inline">Reply</code> | 160 | part·and·eventually·sends·an·<code·class="inline">io_reply</code>·tuple·with·the·corresponding·<code·class="inline">Reply</code> |
| 161 | part.</p><h2·id="output-requests"·class="section-heading"> | 161 | part.</p><h2·id="output-requests"·class="section-heading"> |
| 162 | ··<a·href="#output-requests"·class="hover-link"> | 162 | ··<a·href="#output-requests"·class="hover-link"> |
| 163 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 163 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 164 | ··</a> | 164 | ··</a> |
| 165 | ··<span·class="text">Output·Requests</span> | 165 | ··<span·class="text">Output·Requests</span> |
| 166 | </h2> | 166 | </h2> |
| 167 | <p>To·output·characters·on·an·I/O·device,·the·following·<code·class="inline">Request</code>s·exist:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 167 | <p>To·output·characters·on·an·I/O·device,·the·following·<code·class="inline">Request</code>s·exist:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="0505147271-1">{</span><span·class="ss">put_chars</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Encoding</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Characters</span><span·class="p"·data-group-id="0505147271-1">}</span><span·class="w"> |
| 168 | </span><span·class="p"·data-group-id=" | 168 | </span><span·class="p"·data-group-id="0505147271-2">{</span><span·class="ss">put_chars</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Encoding</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Module</span><span·class="p">,</span><span·class="w">·</sp[·...·truncated·by·diffoscope;·len:·150,·SHA:·39fe1ca9e7f699c6bfc030c7d8bf321fdfb0e8fb7ce38d055b3f8d63599a0830·...·]-2">}</span></code></pre><ul><li><p><code·class="inline">Encoding</code>·is·<code·class="inline">unicode</code>·or·<code·class="inline">latin1</code>,·meaning·that·the·characters·are·(in·case |
| 169 | of·binaries)·encoded·as·UTF-8·or·ISO·Latin-1·(pure·bytes).·A·well-behaved·I/O | 169 | of·binaries)·encoded·as·UTF-8·or·ISO·Latin-1·(pure·bytes).·A·well-behaved·I/O |
| 170 | server·is·also·to·return·an·error·indication·if·list·elements·contain | 170 | server·is·also·to·return·an·error·indication·if·list·elements·contain |
| 171 | integers·>·255·when·<code·class="inline">Encoding</code>·is·set·to·<code·class="inline">latin1</code>.</p><p>Notice·that·this·does·not·in·any·way·tell·how·characters·are·to·be·put·on·the | 171 | integers·>·255·when·<code·class="inline">Encoding</code>·is·set·to·<code·class="inline">latin1</code>.</p><p>Notice·that·this·does·not·in·any·way·tell·how·characters·are·to·be·put·on·the |
| 172 | I/O·device·or·handled·by·the·I/O·server.·Different·I/O·servers·can·handle·the | 172 | I/O·device·or·handled·by·the·I/O·server.·Different·I/O·servers·can·handle·the |
| 173 | characters·however·they·want,·this·only·tells·the·I/O·server·which·format·the | 173 | characters·however·they·want,·this·only·tells·the·I/O·server·which·format·the |
| 174 | data·is·expected·to·have.·In·the·<code·class="inline">Module</code>/<code·class="inline">Function</code>/<code·class="inline">Args</code>·case,·<code·class="inline">Encoding</code> | 174 | data·is·expected·to·have.·In·the·<code·class="inline">Module</code>/<code·class="inline">Function</code>/<code·class="inline">Args</code>·case,·<code·class="inline">Encoding</code> |
| 175 | tells·which·format·the·designated·function·produces.</p><p>Notice·also·that·byte-oriented·data·is·simplest·sent·using·the·ISO·Latin-1 | 175 | tells·which·format·the·designated·function·produces.</p><p>Notice·also·that·byte-oriented·data·is·simplest·sent·using·the·ISO·Latin-1 |
| Offset 187, 15 lines modified | Offset 187, 15 lines modified | ||
| 187 | {error,·Error}</code></pre><ul><li><code·class="inline">Error</code>·describes·the·error·to·the·client,·which·can·do·whatever·it·wants·with | 187 | {error,·Error}</code></pre><ul><li><code·class="inline">Error</code>·describes·the·error·to·the·client,·which·can·do·whatever·it·wants·with |
| 188 | it.·The·<a·href="io.html"><code·class="inline">io</code></a>·module·typically·returns·it·"as·is".</li></ul><h2·id="input-requests"·class="section-heading"> | 188 | it.·The·<a·href="io.html"><code·class="inline">io</code></a>·module·typically·returns·it·"as·is".</li></ul><h2·id="input-requests"·class="section-heading"> |
| 189 | ··<a·href="#input-requests"·class="hover-link"> | 189 | ··<a·href="#input-requests"·class="hover-link"> |
| 190 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 190 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 191 | ··</a> | 191 | ··</a> |
| 192 | ··<span·class="text">Input·Requests</span> | 192 | ··<span·class="text">Input·Requests</span> |
| 193 | </h2> | 193 | </h2> |
| 194 | <p>To·read·characters·from·an·I/O·device,·the·following·<code·class="inline">Request</code>s·exist:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 194 | <p>To·read·characters·from·an·I/O·device,·the·following·<code·class="inline">Request</code>s·exist:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8164355036-1">{</span><span·class="ss">get_until</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Encoding</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Prompt</span><span·class="p">,</span><span·class="w">·</sp[·...·truncated·by·diffoscope;·len:·232,·SHA:·d172e76693acfdde69e1678b75529df066f1d2da0df0e9c6dfb8a6fb12704abb·...·]-1">}</span></code></pre><ul><li><p><code·class="inline">Encoding</code>·denotes·how·data·is·to·be·sent·back·to·the·client·and·what·data·is |
| 195 | sent·to·the·function·denoted·by·<code·class="inline">Module</code>/<code·class="inline">Function</code>/<code·class="inline">ExtraArgs</code>.·If·the | 195 | sent·to·the·function·denoted·by·<code·class="inline">Module</code>/<code·class="inline">Function</code>/<code·class="inline">ExtraArgs</code>.·If·the |
| 196 | function·supplied·returns·data·as·a·list,·the·data·is·converted·to·this | 196 | function·supplied·returns·data·as·a·list,·the·data·is·converted·to·this |
| 197 | encoding.·If·the·function·supplied·returns·data·in·some·other·format,·no | 197 | encoding.·If·the·function·supplied·returns·data·in·some·other·format,·no |
| 198 | conversion·can·be·done,·and·it·is·up·to·the·client-supplied·function·to·return | 198 | conversion·can·be·done,·and·it·is·up·to·the·client-supplied·function·to·return |
| 199 | data·in·a·proper·way.</p><p>If·<code·class="inline">Encoding</code>·is·<code·class="inline">latin1</code>,·lists·of·integers·<code·class="inline">0..255</code>·or·binaries·containing | 199 | data·in·a·proper·way.</p><p>If·<code·class="inline">Encoding</code>·is·<code·class="inline">latin1</code>,·lists·of·integers·<code·class="inline">0..255</code>·or·binaries·containing |
| 200 | plain·bytes·are·sent·back·to·the·client·when·possible.·If·<code·class="inline">Encoding</code>·is | 200 | plain·bytes·are·sent·back·to·the·client·when·possible.·If·<code·class="inline">Encoding</code>·is |
| 201 | <code·class="inline">unicode</code>,·lists·with·integers·in·the·whole·Unicode·range·or·binaries·encoded | 201 | <code·class="inline">unicode</code>,·lists·with·integers·in·the·whole·Unicode·range·or·binaries·encoded |
| Offset 203, 47 lines modified | Offset 203, 47 lines modified | ||
| 203 | of·integers,·never·binaries,·but·the·list·can·contain·numbers·>·255·if | 203 | of·integers,·never·binaries,·but·the·list·can·contain·numbers·>·255·if |
| 204 | <code·class="inline">Encoding</code>·is·<code·class="inline">unicode</code>.</p></li><li><p><code·class="inline">Prompt</code>·is·a·list·of·characters·(not·mixed,·no·binaries)·or·an·atom·to·be | 204 | <code·class="inline">Encoding</code>·is·<code·class="inline">unicode</code>.</p></li><li><p><code·class="inline">Prompt</code>·is·a·list·of·characters·(not·mixed,·no·binaries)·or·an·atom·to·be |
| 205 | output·as·a·prompt·for·input·on·the·I/O·device.·<code·class="inline">Prompt</code>·is·often·ignored·by | 205 | output·as·a·prompt·for·input·on·the·I/O·device.·<code·class="inline">Prompt</code>·is·often·ignored·by |
| 206 | the·I/O·server;·if·set·to·<code·class="inline">''</code>,·it·is·always·to·be·ignored·(and·results·in | 206 | the·I/O·server;·if·set·to·<code·class="inline">''</code>,·it·is·always·to·be·ignored·(and·results·in |
| 207 | nothing·being·written·to·the·I/O·device).</p></li><li><p><code·class="inline">Module</code>,·<code·class="inline">Function</code>,·and·<code·class="inline">ExtraArgs</code>·denote·a·function·and·arguments·to | 207 | nothing·being·written·to·the·I/O·device).</p></li><li><p><code·class="inline">Module</code>,·<code·class="inline">Function</code>,·and·<code·class="inline">ExtraArgs</code>·denote·a·function·and·arguments·to |
| 208 | determine·when·enough·data·is·written.·The·function·is·to·take·two·more | 208 | determine·when·enough·data·is·written.·The·function·is·to·take·two·more |
| 209 | arguments,·the·last·state,·and·a·list·of·characters.·The·function·is·to·return | 209 | arguments,·the·last·state,·and·a·list·of·characters.·The·function·is·to·return |
| 210 | one·of:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 210 | one·of:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8566388521-1">{</span><span·class="ss">done</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Result</span><span·class="p">,</span><span·class="w">·</span><span·class="n">RestChars</span><span·class="p"·data-group-id="8566388521-1">}</span><span·class="w"> |
| 211 | </span><span·class="p"·data-group-id=" | 211 | </span><span·class="p"·data-group-id="8566388521-2">{</span><span·class="ss">more</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Continuation</span><span·class="p"·data-group-id="8566388521-2">}</span></code></pre><p><code·class="inline">Result</code>·can·be·any·Erlang·term,·but·if·it·is·a·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:list/0"><code·class="inline">list/0</code></a>,·the·I/O·server·can |
| 212 | convert·it·to·a·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0"><code·class="inline">binary/0</code></a>·of·appropriate·format·before·returning·it·to·the | 212 | convert·it·to·a·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0"><code·class="inline">binary/0</code></a>·of·appropriate·format·before·returning·it·to·the |
| 213 | client,·if·the·I/O·server·is·set·in·binary·mode·(see·below).</p><p>The·function·is·called·with·the·data·the·I/O·server·finds·on·its·I/O·device, | 213 | client,·if·the·I/O·server·is·set·in·binary·mode·(see·below).</p><p>The·function·is·called·with·the·data·the·I/O·server·finds·on·its·I/O·device, |
| 214 | returning·one·of:</p><ul><li><code·class="inline">{done,·Result,·RestChars}</code>·when·enough·data·is·read.·In·this·case·<code·class="inline">Result</code> | 214 | returning·one·of:</p><ul><li><code·class="inline">{done,·Result,·RestChars}</code>·when·enough·data·is·read.·In·this·case·<code·class="inline">Result</code> |
| 215 | is·sent·to·the·client·and·<code·class="inline">RestChars</code>·is·kept·in·the·I/O·server·as·a·buffer | 215 | is·sent·to·the·client·and·<code·class="inline">RestChars</code>·is·kept·in·the·I/O·server·as·a·buffer |
| 216 | for·later·input.</li><li><code·class="inline">{more,·Continuation}</code>,·which·indicates·that·more·characters·are·needed·to | 216 | for·later·input.</li><li><code·class="inline">{more,·Continuation}</code>,·which·indicates·that·more·characters·are·needed·to |
| 217 | complete·the·request.</li></ul><p><code·class="inline">Continuation</code>·is·sent·as·the·state·in·later·calls·to·the·function·when·more | 217 | complete·the·request.</li></ul><p><code·class="inline">Continuation</code>·is·sent·as·the·state·in·later·calls·to·the·function·when·more |
| 218 | characters·are·available.·When·no·more·characters·are·available,·the·function | 218 | characters·are·available.·When·no·more·characters·are·available,·the·function |
| 219 | must·return·<code·class="inline">{done,·eof,·Rest}</code>.·The·initial·state·is·the·empty·list.·The·data | 219 | must·return·<code·class="inline">{done,·eof,·Rest}</code>.·The·initial·state·is·the·empty·list.·The·data |
| 220 | when·an·end·of·file·is·reached·on·the·IO·device·is·the·atom·<code·class="inline">eof</code>.</p><p>An·emulation·of·the·<code·class="inline">get_line</code>·request·can·be·(inefficiently)·implemented | 220 | when·an·end·of·file·is·reached·on·the·IO·device·is·the·atom·<code·class="inline">eof</code>.</p><p>An·emulation·of·the·<code·class="inline">get_line</code>·request·can·be·(inefficiently)·implemented |
| 221 | using·the·following·functions:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 221 | using·the·following·functions:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="0895303048-1">(</span><span·class="ss">demo</span><span·class="p"·data-group-id="0895303048-1">)</span><span·class="p">.</span><span·class="w"> |
| 222 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 222 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="0895303048-2">(</span><span·class="p"·data-group-id="0895303048-3">[</span><span·class="ss">until_newline</span><span·class="p">/</span><span·class="mi">3</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">get_line</span><span·class="p"[·...·truncated·by·diffoscope;·len:·128,·SHA:·46cbe60db265c1533396949afdb681ef13cfa5771cd07cacd607fb37f5855192·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 223 | </span><span·class="nf">until_newline</span><span·class="p"·data-group-id=" | 223 | </span><span·class="nf">until_newline</span><span·class="p"·data-group-id="0895303048-4">(</span><span·class="p">_</span><span·class="n">ThisFar</span><span·class="p">,</span><span·class="ss">eof</span><span·class="p">,</span><span·class="p">_</span><span·class="n">MyStopCharacter</span><span·class="p"·data-group-id="0895303048-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 224 | ····</span><span·class="p"·data-group-id=" | 224 | ····</span><span·class="p"·data-group-id="0895303048-5">{</span><span·class="ss">done</span><span·class="p">,</span><span·class="ss">eof</span><span·class="p">,</span><span·class="p"·data-group-id="0895303048-6">[</span><span·class="p"·data-group-id="0895303048-6">]</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·16,·SHA:·08fed52cdea58a95e308acedef550d4f5b0c82c0bbea9c057f97eb56a7a451e6·...·]-5">}</span><span·class="p">;</span><span·class="w"> |
| 225 | </span><span·class="nf">until_newline</span><span·class="p"·data-group-id=" | 225 | </span><span·class="nf">until_newline</span><span·class="p"·data-group-id="0895303048-7">(</span><span·class="n">ThisFar</span><span·class="p">,</span><span·class="n">CharList</span><span·class="p">,</span><span·class="n">MyStopCharacter</span><span·class="p"·data-group-id="0895303048-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 226 | ····</span><span·class="k">case</span><span·class="w"> | 226 | ····</span><span·class="k">case</span><span·class="w"> |
| 227 | ········</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">splitwith</span><span·class="p"·data-group-id=" | 227 | ········</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">splitwith</span><span·class="p"·data-group-id="0895303048-8">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="0895303048-9">(</span><span·class="n">X</span><span·class="p"·data-group-id="0895303048-9">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·306,·SHA:·8b2fa2cd9efc7eb040281a398076eb87f3007ceaa2eed9846deeedf0e6420b27·...·]-8">)</span><span·class="w"> |
| 228 | ····</span><span·class="k">of</span><span·class="w"> | 228 | ····</span><span·class="k">of</span><span·class="w"> |
| 229 | ··</span><span·class="p"·data-group-id=" | 229 | ··</span><span·class="p"·data-group-id="0895303048-10">{</span><span·class="n">L</span><span·class="p">,</span><span·class="p"·data-group-id="0895303048-11">[</span><span·class="p"·data-group-id="0895303048-11">]</span><span·class="p"·data-group-id="0895303048-10">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 230 | ············</span><span·class="p"·data-group-id=" | 230 | ············</span><span·class="p"·data-group-id="0895303048-12">{</span><span·class="ss">more</span><span·class="p">,</span><span·class="n">ThisFar</span><span·class="o">++</span><span·class="n">L</span><span·class="p"·data-group-id="0895303048-12">}</span><span·class="p">;</span><span·class="w"> |
| 231 | ··</span><span·class="p"·data-group-id=" | 231 | ··</span><span·class="p"·data-group-id="0895303048-13">{</span><span·class="n">L2</span><span·class="p">,</span><span·class="p"·data-group-id="0895303048-14">[</span><span·class="n">MyStopCharacter</span><span·class="p">|</span><span·class="n">Rest</span><span·class="p"·data-group-id="0895303048[·...·truncated·by·diffoscope;·len:·54,·SHA:·106cce0781c32674c724f5710596282ea88a018f373ff8447419fc9bdb06ba23·...·]-13">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 232 | ······</span><span·class="p"·data-group-id=" | 232 | ······</span><span·class="p"·data-group-id="0895303048-15">{</span><span·class="ss">done</span><span·class="p">,</span><span·class="n">ThisFar</span><span·class="o">++</span><span·class="n">L2</span><span·class="o">++</span><span·class="p"·data-group-id="0895303048-16">[</span><span·class="n">MyStop[·...·truncated·by·diffoscope;·len:·162,·SHA:·262ae12bacd9e9fc8d5857111b4fe9286da7ceb0a46c7622fd5df7099acd0313·...·]-15">}</span><span·class="w"> |
| 233 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 233 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 234 | </span><span·class="nf">get_line</span><span·class="p"·data-group-id=" | 234 | </span><span·class="nf">get_line</span><span·class="p"·data-group-id="0895303048-17">(</span><span·class="n">IoServer</span><span·class="p"·data-group-id="0895303048-17">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 235 | ····</span><span·class="n">IoServer</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 235 | ····</span><span·class="n">IoServer</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="0895303048-18">{</span><span·class="ss">io_request</span><span·class="p">,</span><span·class="w"> |
| 236 | ················</span><span·class="nf">self</span><span·class="p"·data-group-id=" | 236 | ················</span><span·class="nf">self</span><span·class="p"·data-group-id="0895303048-19">(</span><span·class="p"·data-group-id="0895303048-19">)</span><span·class="p">,</span><span·class="w"> |
| 237 | ················</span><span·class="n">IoServer</span><span·class="p">,</span><span·class="w"> | 237 | ················</span><span·class="n">IoServer</span><span·class="p">,</span><span·class="w"> |
| 238 | ················</span><span·class="p"·data-group-id=" | 238 | ················</span><span·class="p"·data-group-id="0895303048-20">{</span><span·class="ss">get_until</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">unicode</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">''</span><span·class="p">,</span><span·class="w"[·...·truncated·by·diffoscope;·len:·425,·SHA:·c1f1bb30dae2ad7df700a2ce9958dadb3da929fa865068714429ae8ed67b4daa·...·]-18">}</span><span·class="p">,</span><span·class="w"> |
| 239 | ····</span><span·class="k">receive</span><span·class="w"> | 239 | ····</span><span·class="k">receive</span><span·class="w"> |
| 240 | ········</span><span·class="p"·data-group-id=" | 240 | ········</span><span·class="p"·data-group-id="0895303048-22">{</span><span·class="ss">io_reply</span><span·class="p">,</span><span·class="w">·</span><span·class="n">IoServer</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="0895303048-22">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 241 | ······</span><span·class="n">Data</span><span·class="w"> | 241 | ······</span><span·class="n">Data</span><span·class="w"> |
| 242 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>Notice·that·the·last·element·in·the·<code·class="inline">Request</code>·tuple·(<code·class="inline">[$\n]</code>)·is·appended·to | 242 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>Notice·that·the·last·element·in·the·<code·class="inline">Request</code>·tuple·(<code·class="inline">[$\n]</code>)·is·appended·to |
| 243 | the·argument·list·when·the·function·is·called.·The·function·is·to·be·called | 243 | the·argument·list·when·the·function·is·called.·The·function·is·to·be·called |
| 244 | like·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#apply/3"><code·class="inline">apply(Module,·Function,·[·State,·Data·|·ExtraArgs·])</code></a>·by | 244 | like·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#apply/3"><code·class="inline">apply(Module,·Function,·[·State,·Data·|·ExtraArgs·])</code></a>·by |
| 245 | the·I/O·server.</p></li></ul><p>A·fixed·number·of·characters·is·requested·using·the·following·<code·class="inline">Request</code>:</p><pre><code·class="text">{get_chars,·Encoding,·Prompt,·N}</code></pre><ul><li><code·class="inline">Encoding</code>·and·<code·class="inline">Prompt</code>·as·for·<code·class="inline">get_until</code>.</li><li><code·class="inline">N</code>·is·the·number·of·characters·to·be·read·from·the·I/O·device.</li></ul><p>A·single·line·(as·in·former·example)·is·requested·with·the·following·<code·class="inline">Request</code>:</p><pre><code·class="text">{get_line,·Encoding,·Prompt}</code></pre><ul><li><code·class="inline">Encoding</code>·and·<code·class="inline">Prompt</code>·as·for·<code·class="inline">get_until</code>.</li></ul><p>Clearly,·<code·class="inline">get_chars</code>·and·<code·class="inline">get_line</code>·could·be·implemented·with·the·<code·class="inline">get_until</code> | 245 | the·I/O·server.</p></li></ul><p>A·fixed·number·of·characters·is·requested·using·the·following·<code·class="inline">Request</code>:</p><pre><code·class="text">{get_chars,·Encoding,·Prompt,·N}</code></pre><ul><li><code·class="inline">Encoding</code>·and·<code·class="inline">Prompt</code>·as·for·<code·class="inline">get_until</code>.</li><li><code·class="inline">N</code>·is·the·number·of·characters·to·be·read·from·the·I/O·device.</li></ul><p>A·single·line·(as·in·former·example)·is·requested·with·the·following·<code·class="inline">Request</code>:</p><pre><code·class="text">{get_line,·Encoding,·Prompt}</code></pre><ul><li><code·class="inline">Encoding</code>·and·<code·class="inline">Prompt</code>·as·for·<code·class="inline">get_until</code>.</li></ul><p>Clearly,·<code·class="inline">get_chars</code>·and·<code·class="inline">get_line</code>·could·be·implemented·with·the·<code·class="inline">get_until</code> |
| 246 | request·(and·indeed·they·were·originally),·but·demands·for·efficiency·have·made | 246 | request·(and·indeed·they·were·originally),·but·demands·for·efficiency·have·made |
| 247 | these·additions·necessary.</p><p>The·I/O·server·replies·to·the·client·with·an·<code·class="inline">io_reply</code>·tuple,·where·element | 247 | these·additions·necessary.</p><p>The·I/O·server·replies·to·the·client·with·an·<code·class="inline">io_reply</code>·tuple,·where·element |
| Offset 273, 18 lines modified | Offset 273, 18 lines modified | ||
| 273 | forms.·However,·the·I/O·server·is·to·convert·the·results·to·binaries·whenever | 273 | forms.·However,·the·I/O·server·is·to·convert·the·results·to·binaries·whenever |
| 274 | possible·(that·is,·when·the·function·supplied·to·<code·class="inline">get_until</code>·returns·a·list). | 274 | possible·(that·is,·when·the·function·supplied·to·<code·class="inline">get_until</code>·returns·a·list). |
| 275 | This·is·done·in·the·example·in·section | 275 | This·is·done·in·the·example·in·section |
| 276 | <a·href="io_protocol.html#example_io_server">An·Annotated·and·Working·Example·I/O·Server</a>.</p><p>An·I/O·server·in·binary·mode·affects·the·data·sent·to·the·client,·so·that·it | 276 | <a·href="io_protocol.html#example_io_server">An·Annotated·and·Working·Example·I/O·Server</a>.</p><p>An·I/O·server·in·binary·mode·affects·the·data·sent·to·the·client,·so·that·it |
| 277 | must·be·able·to·handle·binary·data.·For·convenience,·the·modes·of·an·I/O·server | 277 | must·be·able·to·handle·binary·data.·For·convenience,·the·modes·of·an·I/O·server |
| 278 | can·be·set·and·retrieved·using·the·following·I/O·requests:</p><pre><code·class="text">{setopts,·Opts}</code></pre><ul><li><code·class="inline">Opts</code>·is·a·list·of·options·in·the·format·recognized·by·the·<a·href="proplists.html"><code·class="inline">proplists</code></a> | 278 | can·be·set·and·retrieved·using·the·following·I/O·requests:</p><pre><code·class="text">{setopts,·Opts}</code></pre><ul><li><code·class="inline">Opts</code>·is·a·list·of·options·in·the·format·recognized·by·the·<a·href="proplists.html"><code·class="inline">proplists</code></a> |
| 279 | module·(and·by·the·I/O·server).</li></ul><p>As·an·example,·the·I/O·server·for·the·interactive·shell·(in·<code·class="inline">group.erl</code>) | 279 | module·(and·by·the·I/O·server).</li></ul><p>As·an·example,·the·I/O·server·for·the·interactive·shell·(in·<code·class="inline">group.erl</code>) |
| 280 | understands·the·following·options:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="4 | 280 | understands·the·following·options:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="4411091264-1">{</span><span·class="ss">binary</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">boolean</span><span·class="p"·data-group-id="4411091264-2">(</span><span·class="p"·data-group-id="4411091264-2">)</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·283,·SHA:·318587b7a0f06bbfe089dd36b07b16f71f581d112a122623b7ef6a1250dadb52·...·]-3">)</span><span·class="w"> |
| 281 | </span><span·class="p"·data-group-id="4 | 281 | </span><span·class="p"·data-group-id="4411091264-4">{</span><span·class="ss">echo</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">boolean</span><span·class="p"·data-group-id="4411091264-5">(</span><span·class="p"·data-group-id="4411091264-5">)</span><span·class="p"·data-g[·...·truncated·by·diffoscope;·len:·19,·SHA:·bafbdcf5725d171a5fd33c7f26d7996a8f3c5dfd800fbdbc07c5d01c67683090·...·]-4">}</span><span·class="w"> |
| 282 | </span><span·class="p"·data-group-id="4 | 282 | </span><span·class="p"·data-group-id="4411091264-6">{</span><span·class="ss">expand_fun</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="4411091264-7">(</span><span·class="p"·data-group-id="4411091264-7">)</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·21,·SHA:·fb2ea8f91114d1009ac82e61784619b27373039045d5e0fb10cf78c3ab44ae9d·...·]-6">}</span><span·class="w"> |
| 283 | </span><span·class="p"·data-group-id="4 | 283 | </span><span·class="p"·data-group-id="4411091264-8">{</span><span·class="ss">encoding</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">unicode</span><span·class="o">/</span><span·class="ss">latin1</span><span·class="p"·data-group-id="4411091264-8">}</span><span·class="w">·[·...·truncated·by·diffoscope;·len:·236,·SHA:·c60bb6470dc523d7ffcc3bb8c6ad83f91fea8a5136dde63fad7bc5226c1e3ab4·...·]-9">)</span></code></pre><p>Options·<code·class="inline">binary</code>·and·<code·class="inline">encoding</code>·are·common·for·all·I/O·servers·in·OTP,·while |
| 284 | <code·class="inline">echo</code>·and·<code·class="inline">expand</code>·are·valid·only·for·this·I/O·server.·Option·<code·class="inline">unicode</code> | 284 | <code·class="inline">echo</code>·and·<code·class="inline">expand</code>·are·valid·only·for·this·I/O·server.·Option·<code·class="inline">unicode</code> |
| 285 | notifies·how·characters·are·put·on·the·physical·I/O·device,·that·is,·if·the | 285 | notifies·how·characters·are·put·on·the·physical·I/O·device,·that·is,·if·the |
| 286 | terminal·itself·is·Unicode-aware.·It·does·not·affect·how·characters·are·sent·in | 286 | terminal·itself·is·Unicode-aware.·It·does·not·affect·how·characters·are·sent·in |
| 287 | the·I/O·protocol,·where·each·request·contains·encoding·information·for·the | 287 | the·I/O·protocol,·where·each·request·contains·encoding·information·for·the |
| 288 | provided·or·returned·data.</p><p>The·I/O·server·is·to·send·one·of·the·following·as·<code·class="inline">Reply</code>:</p><pre><code·class="text">ok | 288 | provided·or·returned·data.</p><p>The·I/O·server·is·to·send·one·of·the·following·as·<code·class="inline">Reply</code>:</p><pre><code·class="text">ok |
| 289 | {error,·Error}</code></pre><p>An·error·(preferably·<code·class="inline">enotsup</code>)·is·to·be·expected·if·the·option·is·not·supported | 289 | {error,·Error}</code></pre><p>An·error·(preferably·<code·class="inline">enotsup</code>)·is·to·be·expected·if·the·option·is·not·supported |
| 290 | by·the·I/O·server·(like·if·an·<code·class="inline">echo</code>·option·is·sent·in·a·<code·class="inline">setopts</code>·request·to·a | 290 | by·the·I/O·server·(like·if·an·<code·class="inline">echo</code>·option·is·sent·in·a·<code·class="inline">setopts</code>·request·to·a |
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| 299 | </h2> | 299 | </h2> |
| 300 | <p>The·<code·class="inline">Request</code>·element·can·in·itself·contain·many·<code·class="inline">Request</code>s·by·using·the | 300 | <p>The·<code·class="inline">Request</code>·element·can·in·itself·contain·many·<code·class="inline">Request</code>s·by·using·the |
| 301 | following·format:</p><pre><code·class="text">{requests,·Requests}</code></pre><ul><li><code·class="inline">Requests</code>·is·a·list·of·valid·<code·class="inline">io_request</code>·tuples·for·the·protocol.·They·must | 301 | following·format:</p><pre><code·class="text">{requests,·Requests}</code></pre><ul><li><code·class="inline">Requests</code>·is·a·list·of·valid·<code·class="inline">io_request</code>·tuples·for·the·protocol.·They·must |
| 302 | be·executed·in·the·order·that·they·appear·in·the·list.·The·execution·is·to | 302 | be·executed·in·the·order·that·they·appear·in·the·list.·The·execution·is·to |
| 303 | continue·until·one·of·the·requests·results·in·an·error·or·the·list·is | 303 | continue·until·one·of·the·requests·results·in·an·error·or·the·list·is |
| 304 | consumed.·The·result·of·the·last·request·is·sent·back·to·the·client.</li></ul><p>The·I/O·server·can,·for·a·list·of·requests,·send·any·of·the·following·valid | 304 | consumed.·The·result·of·the·last·request·is·sent·back·to·the·client.</li></ul><p>The·I/O·server·can,·for·a·list·of·requests,·send·any·of·the·following·valid |
| 305 | results·in·the·reply,·depending·on·the·requests·in·the·list:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">ok</span><span·class="w"> | 305 | results·in·the·reply,·depending·on·the·requests·in·the·list:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">ok</span><span·class="w"> |
| 306 | </span><span·class="p"·data-group-id=" | 306 | </span><span·class="p"·data-group-id="3178473290-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Data</span><span·class="p"·data-group-id="3178473290-1">}</span><span·class="w"> |
| 307 | </span><span·class="p"·data-group-id=" | 307 | </span><span·class="p"·data-group-id="3178473290-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Options</span><span·class="p"·data-group-id="3178473290-2">}</span><span·class="w"> |
| 308 | </span><span·class="p"·data-group-id=" | 308 | </span><span·class="p"·data-group-id="3178473290-3">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Error</span><span·class="p"·data-group-id="3178473290-3">}</span></code></pre><h2·id="optional-i-o-request"·class="section-heading"> |
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| 977 | </h2> | 977 | </h2> |
| 978 | <ul><li><code·class="inline">error(unexpected_end)</code>·if·<code·class="inline">Binary</code>·contains·incomplete·JSON·value</li><li><code·class="inline">error({invalid_byte,·Byte})</code>·if·<code·class="inline">Binary</code>·contains·unexpected·byte·or·invalid·UTF-8·byte</li><li><code·class="inline">error({unexpected_sequence,·Bytes})</code>·if·<code·class="inline">Binary</code>·contains·invalid·UTF-8·escape</li></ul><h2·id="decode/1-example"·class="section-heading"> | 978 | <ul><li><code·class="inline">error(unexpected_end)</code>·if·<code·class="inline">Binary</code>·contains·incomplete·JSON·value</li><li><code·class="inline">error({invalid_byte,·Byte})</code>·if·<code·class="inline">Binary</code>·contains·unexpected·byte·or·invalid·UTF-8·byte</li><li><code·class="inline">error({unexpected_sequence,·Bytes})</code>·if·<code·class="inline">Binary</code>·contains·invalid·UTF-8·escape</li></ul><h2·id="decode/1-example"·class="section-heading"> |
| 979 | ··<a·href="#decode/1-example"·class="hover-link"> | 979 | ··<a·href="#decode/1-example"·class="hover-link"> |
| 980 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 980 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 981 | ··</a> | 981 | ··</a> |
| 982 | ··<span·class="text">Example</span> | 982 | ··<span·class="text">Example</span> |
| 983 | </h2> | 983 | </h2> |
| 984 | <pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">json</span><span·class="p">:</span><span·class="nf">decode</span><span·class="p"·data-group-id=" | 984 | <pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">json</span><span·class="p">:</span><span·class="nf">decode</span><span·class="p"·data-group-id="0627816000-1">(</span><span·class="p"·data-group-id="0627816000-2"><<</span><span·class="s">"{\"foo\":·1}"</span><span·class="p"·data-group-id="0627816000-2">>></span><span·class="p"·data-group-id="0627816000-1">)</span><span·class="p">.</span><span·class="w"> |
| 985 | </span><span·class="p"·data-group-id=" | 985 | </span><span·class="p"·data-group-id="0627816000-3">#{</span><span·class="p"·data-group-id="0627816000-4"><<</span><span·class="s">"foo"</span><span·class="p"·data-group-id="0627816000-4">>></span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span[·...·truncated·by·diffoscope;·len:·63,·SHA:·d48ec4cd677ca00c87495d3e119be9c420c82d89f1ec19aea266b3f6388af9c6·...·]6000-3">}</span></code></pre> |
| 986 | ··</section> | 986 | ··</section> |
| 987 | </section> | 987 | </section> |
| 988 | <section·class="detail"·id="decode/3"> | 988 | <section·class="detail"·id="decode/3"> |
| 989 | ··<div·class="detail-header"> | 989 | ··<div·class="detail-header"> |
| 990 | ····<a·href="#decode/3"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 990 | ····<a·href="#decode/3"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 991 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 991 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 1028 | </h2> | 1028 | </h2> |
| 1029 | <ul><li><code·class="inline">error({invalid_byte,·Byte})</code>·if·<code·class="inline">Binary</code>·contains·unexpected·byte·or·invalid·UTF-8·byte</li><li><code·class="inline">error({unexpected_sequence,·Bytes})</code>·if·<code·class="inline">Binary</code>·contains·invalid·UTF-8·escape</li><li><code·class="inline">error(unexpected_end)</code>·if·<code·class="inline">Binary</code>·contains·incomplete·JSON·value</li></ul><h2·id="decode/3-example"·class="section-heading"> | 1029 | <ul><li><code·class="inline">error({invalid_byte,·Byte})</code>·if·<code·class="inline">Binary</code>·contains·unexpected·byte·or·invalid·UTF-8·byte</li><li><code·class="inline">error({unexpected_sequence,·Bytes})</code>·if·<code·class="inline">Binary</code>·contains·invalid·UTF-8·escape</li><li><code·class="inline">error(unexpected_end)</code>·if·<code·class="inline">Binary</code>·contains·incomplete·JSON·value</li></ul><h2·id="decode/3-example"·class="section-heading"> |
| 1030 | ··<a·href="#decode/3-example"·class="hover-link"> | 1030 | ··<a·href="#decode/3-example"·class="hover-link"> |
| 1031 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 1031 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 1032 | ··</a> | 1032 | ··</a> |
| 1033 | ··<span·class="text">Example</span> | 1033 | ··<span·class="text">Example</span> |
| 1034 | </h2> | 1034 | </h2> |
| 1035 | <p>Decoding·object·keys·as·atoms:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">Push</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="6797422744-1">(</span><span·class="n">Key</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Value</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Acc</span><span·class="p"·data-group-id="6797422744-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="6797422744-2">[</span><span·class="p"·data-group-id="6797422744-3">{</span><span·class="nf">binary_to_existing_atom</span><span·class="p"·data-group-id="6797422744-4">(</span><span·class="n">Key</span><span·class="p"·data-group-id="6797422744-4">)</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Value</span><span·class="p"·data-group-id="6797422744-3">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="n">Acc</span><span·class="p"·data-group-id="6797422744-2">]</span><span·class="w">·</span><span·class="k">end</span><span·class="p">.</span><span·class="gp·unselectable"> | ||
| 1036 | >·</span><span·class="nc">json</span><span·class="p">:</span><span·class="nf">decode</span><span·class="p"·data-group-id="6797422744-5">(</span><span·class="p"·data-group-id="6797422744-6"><<</span><span·class="s">"{\"foo\":·1}"</span><span·class="p"·data-group-id="6797422744-6">>></span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6797422744-7">#{</span><span·class="ss">object_push</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="n">Push</span><span·class="p"·data-group-id="6797422744-7">}</span><span·class="p"·data-group-id="6797422744-5">)</span><span·class="p">.</span><span·class="w"> | ||
| 1037 | < | 1035 | <p>Decoding·object·keys·as·atoms:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">Push</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><spa[·...·truncated·by·diffoscope;·len:·1022,·SHA:·cb3b51f6673cb2a48bbab1d2f0924e42c08e27334a7c747ec08a13565257b2c8·...·]> |
| 1036 | >·</span><span·class="nc">json</span><span·class="p">:</span><span·class="nf">decode</span><span·class="p"·data-group-id="0205655889-5">(</span><span·class="p"·data-group-id="0205655889-6"><<</span><span·class="s">"{\"foo\":·1}"</span><span·class="p"·data-group-id="0205655889-6">>></span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0205655889-7">#{</span><span·class="ss">object_push</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="n">Push</span><span·class="p"·data-group-id="0205655889-7">}</span><span·class="p"·data-group-id="0205655889-5">)</span><span·class="p">.</span><span·class="w"> | ||
| 1037 | </span><span·class="p"·data-group-id="0205655889-8">{</span><span·class="p"·data-group-id="0205655889-9">#{</span><span·class="ss">foo</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="0205655889-9">}</span><span·class="p">,</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="0205655889-10"><<</span><span·class="p"·data-group-id="0205655889-10">>></span><span·class="p"·data-group-id="0205655889-8">}</span></code></pre> | ||
| 1038 | ··</section> | 1038 | ··</section> |
| 1039 | </section> | 1039 | </section> |
| 1040 | <section·class="detail"·id="decode_continue/2"> | 1040 | <section·class="detail"·id="decode_continue/2"> |
| 1041 | ··<div·class="detail-header"> | 1041 | ··<div·class="detail-header"> |
| 1042 | ····<a·href="#decode_continue/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1042 | ····<a·href="#decode_continue/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1043 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1043 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 1061, 19 lines modified | Offset 1061, 19 lines modified | ||
| 1061 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·decode_continue(<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>()·|·end_of_input,·Opaque·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>())·-> | 1061 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·decode_continue(<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>()·|·end_of_input,·Opaque·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>())·-> |
| 1062 | ·························{Result·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:dynamic/0">dynamic</a>(),·Acc·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:dynamic/0">dynamic</a>(),·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>()}·| | 1062 | ·························{Result·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:dynamic/0">dynamic</a>(),·Acc·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:dynamic/0">dynamic</a>(),·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>()}·| |
| 1063 | ·························{continue,·<a·href="#t:continuation_state/0">continuation_state</a>()}.</pre> | 1063 | ·························{continue,·<a·href="#t:continuation_state/0">continuation_state</a>()}.</pre> |
| 1064 | ······</div> | 1064 | ······</div> |
| 1065 | <p>Continue·parsing·a·stream·of·bytes·of·a·JSON·value.</p><p>Similar·to·<a·href="#decode_start/3"><code·class="inline">decode_start/3</code></a>,·if·the·function·returns·<code·class="inline">{continue,·State}</code>·and | 1065 | <p>Continue·parsing·a·stream·of·bytes·of·a·JSON·value.</p><p>Similar·to·<a·href="#decode_start/3"><code·class="inline">decode_start/3</code></a>,·if·the·function·returns·<code·class="inline">{continue,·State}</code>·and |
| 1066 | there·is·no·more·data,·use·<code·class="inline">end_of_input</code>·instead·of·a·binary.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="p"·data-group-id=" | 1066 | there·is·no·more·data,·use·<code·class="inline">end_of_input</code>·instead·of·a·binary.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="p"·data-group-id="7184509675-1">{</span><span·class="ss">continue</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="p"·data-group-id="7184509675-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·584,·SHA:·b639740064563dc47df4218749547cf2d6a960fd7a79bd1e3017590ea078695d·...·]-2">)</span><span·class="p">.</span><span·class="gp·unselectable"> |
| 1067 | >·</span><span·class="nc">json</span><span·class="p">:</span><span·class="nf">decode_continue</span><span·class="p"·data-group-id=" | 1067 | >·</span><span·class="nc">json</span><span·class="p">:</span><span·class="nf">decode_continue</span><span·class="p"·data-group-id="7184509675-5">(</span><span·class="p"·data-group-id="7184509675-6"><<</span><span·class="s">"1}"</span><span·class="p"·data-group-id="7184509675-6">>></span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><[·...·truncated·by·diffoscope;·len:·40,·SHA:·da0787547554052fc618a428bec8df4cbb46d54259ef775cd3793e32f8edbf70·...·]-5">)</span><span·class="p">.</span><span·class="w"> |
| 1068 | </span><span·class="p"·data-group-id=" | 1068 | </span><span·class="p"·data-group-id="7184509675-7">{</span><span·class="p"·data-group-id="7184509675-8">#{</span><span·class="ss">foo</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id="7184509675-8">}</span[·...·truncated·by·diffoscope;·len:·1206,·SHA:·65214de059138abfb678db9d9634150248284d2933eae5c7c8b748426f0cfa14·...·]-2">)</span><span·class="p">.</span><span·class="gp·unselectable"> |
| 1069 | >·</span><span·class="nc">json</span><span·class="p">:</span><span·class="nf">decode_continue</span><span·class="p"·data-group-id=" | 1069 | >·</span><span·class="nc">json</span><span·class="p">:</span><span·class="nf">decode_continue</span><span·class="p"·data-group-id="2122334312-5">(</span><span·class="ss">end_of_input</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="p"·data-group-id="2122334312-5">)</span><span·class="p">.</span><span·class="w"> |
| 1070 | </span><span·class="p"·data-group-id=" | 1070 | </span><span·class="p"·data-group-id="2122334312-6">{</span><span·class="mi">123</span><span·class="p">,</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="2122334312-7"><<</span><span·class="p"·data-group-id="2122334312-7">>></span><span·class="[·...·truncated·by·diffoscope;·len:·28,·SHA:·93c94885274d27851eca5fc6b7b4cefdb37123117c644740d51752e5379bf249·...·]-6">}</span></code></pre> |
| 1071 | ··</section> | 1071 | ··</section> |
| 1072 | </section> | 1072 | </section> |
| 1073 | <section·class="detail"·id="decode_start/3"> | 1073 | <section·class="detail"·id="decode_start/3"> |
| 1074 | ··<div·class="detail-header"> | 1074 | ··<div·class="detail-header"> |
| 1075 | ····<a·href="#decode_start/3"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1075 | ····<a·href="#decode_start/3"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1076 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1076 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 1131, 16 lines modified | Offset 1131, 16 lines modified | ||
| 1131 | <p>Generates·JSON·corresponding·to·<code·class="inline">Term</code>.</p><p>Supports·basic·data·mapping:</p><table><thead><tr><th·style="text-align:·left;"><strong>Erlang</strong></th><th·style="text-align:·left;"><strong>JSON</strong></th></tr></thead><tbody><tr><td·style="text-align:·left;"><code·class="inline">integer()·|·float()</code></td><td·style="text-align:·left;">Number</td></tr><tr><td·style="text-align:·left;"><code·class="inline">true·|·false</code></td><td·style="text-align:·left;">Boolean</td></tr><tr><td·style="text-align:·left;"><code·class="inline">null</code></td><td·style="text-align:·left;">Null</td></tr><tr><td·style="text-align:·left;"><code·class="inline">binary()</code></td><td·style="text-align:·left;">String</td></tr><tr><td·style="text-align:·left;"><code·class="inline">atom()</code></td><td·style="text-align:·left;">String</td></tr><tr><td·style="text-align:·left;"><code·class="inline">list()</code></td><td·style="text-align:·left;">Array</td></tr><tr><td·style="text-align:·left;"><code·class="inline">#{binary()·=>·_}</code></td><td·style="text-align:·left;">Object</td></tr><tr><td·style="text-align:·left;"><code·class="inline">#{atom()·=>·_}</code></td><td·style="text-align:·left;">Object</td></tr><tr><td·style="text-align:·left;"><code·class="inline">#{integer()·=>·_}</code></td><td·style="text-align:·left;">Object</td></tr></tbody></table><p>This·is·equivalent·to·<code·class="inline">encode(Term,·fun·json:encode_value/2)</code>.</p><h2·id="encode/1-examples"·class="section-heading"> | 1131 | <p>Generates·JSON·corresponding·to·<code·class="inline">Term</code>.</p><p>Supports·basic·data·mapping:</p><table><thead><tr><th·style="text-align:·left;"><strong>Erlang</strong></th><th·style="text-align:·left;"><strong>JSON</strong></th></tr></thead><tbody><tr><td·style="text-align:·left;"><code·class="inline">integer()·|·float()</code></td><td·style="text-align:·left;">Number</td></tr><tr><td·style="text-align:·left;"><code·class="inline">true·|·false</code></td><td·style="text-align:·left;">Boolean</td></tr><tr><td·style="text-align:·left;"><code·class="inline">null</code></td><td·style="text-align:·left;">Null</td></tr><tr><td·style="text-align:·left;"><code·class="inline">binary()</code></td><td·style="text-align:·left;">String</td></tr><tr><td·style="text-align:·left;"><code·class="inline">atom()</code></td><td·style="text-align:·left;">String</td></tr><tr><td·style="text-align:·left;"><code·class="inline">list()</code></td><td·style="text-align:·left;">Array</td></tr><tr><td·style="text-align:·left;"><code·class="inline">#{binary()·=>·_}</code></td><td·style="text-align:·left;">Object</td></tr><tr><td·style="text-align:·left;"><code·class="inline">#{atom()·=>·_}</code></td><td·style="text-align:·left;">Object</td></tr><tr><td·style="text-align:·left;"><code·class="inline">#{integer()·=>·_}</code></td><td·style="text-align:·left;">Object</td></tr></tbody></table><p>This·is·equivalent·to·<code·class="inline">encode(Term,·fun·json:encode_value/2)</code>.</p><h2·id="encode/1-examples"·class="section-heading"> |
| 1132 | ··<a·href="#encode/1-examples"·class="hover-link"> | 1132 | ··<a·href="#encode/1-examples"·class="hover-link"> |
| 1133 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 1133 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 1134 | ··</a> | 1134 | ··</a> |
| 1135 | ··<span·class="text">Examples</span> | 1135 | ··<span·class="text">Examples</span> |
| 1136 | </h2> | 1136 | </h2> |
| 1137 | <pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nf">iolist_to_binary</span><span·class="p"·data-group-id="3329332467-1">(</span><span·class="nc">json</span><span·class="p">:</span><span·class="nf">encode</span><span·class="p"·data-group-id="3329332467-2">(</span><span·class="p"·data-group-id="3329332467-3">#{</span><span·class="ss">foo</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="3329332467-4"><<</span><span·class="s">"bar"</span><span·class="p"·data-group-id="3329332467-4">>></span><span·class="p"·data-group-id="3329332467-3">}</span><span·class="p"·data-group-id="3329332467-2">)</span><span·class="p"·data-group-id="3329332467-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 1138 | < | 1137 | <pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nf">iolist_to_binary</span><span·class="p"·data-group-id="1569717334-1">(</span><span·class="nc">json</span><span·class="p">:</span><span·class="nf">encod[·...·truncated·by·diffoscope;·len:·574,·SHA:·db3d5aa705f57f439e4f24c77ea864cfa8ee74645f480b1b6e885895ade39fec·...·]> |
| 1138 | </span><span·class="p"·data-group-id="1569717334-5"><<</span><span·class="s">"{\"foo\":\"bar\"}"</span><span·class="p"·data-group-id="1569717334-5">>></span></code></pre> | ||
| 1139 | ··</section> | 1139 | ··</section> |
| 1140 | </section> | 1140 | </section> |
| 1141 | <section·class="detail"·id="encode/2"> | 1141 | <section·class="detail"·id="encode/2"> |
| 1142 | ··<div·class="detail-header"> | 1142 | ··<div·class="detail-header"> |
| 1143 | ····<a·href="#encode/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1143 | ····<a·href="#encode/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1144 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1144 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 1171 | to·help·in·constructing·such·callbacks.</p><h2·id="encode/2-examples"·class="section-heading"> | 1171 | to·help·in·constructing·such·callbacks.</p><h2·id="encode/2-examples"·class="section-heading"> |
| 1172 | ··<a·href="#encode/2-examples"·class="hover-link"> | 1172 | ··<a·href="#encode/2-examples"·class="hover-link"> |
| 1173 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 1173 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 1174 | ··</a> | 1174 | ··</a> |
| 1175 | ··<span·class="text">Examples</span> | 1175 | ··<span·class="text">Examples</span> |
| 1176 | </h2> | 1176 | </h2> |
| 1177 | <p>An·encoder·that·uses·a·heuristic·to·differentiate·object-like | 1177 | <p>An·encoder·that·uses·a·heuristic·to·differentiate·object-like |
| 1178 | lists·of·key-value·pairs·from·plain·lists:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nf">encoder</span><span·class="p"·data-group-id=" | 1178 | lists·of·key-value·pairs·from·plain·lists:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nf">encoder</span><span·class="p"·data-group-id="9363672620-1">(</span><span·class="p"·data-group-id="9363672620-2">[</span><span·class="p"·data-group-id="9363672620-3">{</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="p"·data-group-id="9[·...·truncated·by·diffoscope;·len:·772,·SHA:·1c5556d4000d960443e2e0cc962526c2a983b509f9566fba39ea7aa80c320b78·...·]-4">)</span><span·class="p">;</span><span·class="gp·unselectable"> |
| 1179 | >·</span><span·class="nf">encoder</span><span·class="p"·data-group-id=" | 1179 | >·</span><span·class="nf">encoder</span><span·class="p"·data-group-id="9363672620-5">(</span><span·class="n">Other</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Encode</span><span·class="p"·data-group-id="9363672620-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span>[·...·truncated·by·diffoscope;·len:·287,·SHA:·3e36a468e48fb158b00a770237949be77bb935c29c002a41b4a31a06cf6a0ec9·...·]-6">)</span><span·class="p">.</span><span·class="gp·unselectable"> |
| 1180 | >·</span><span·class="nf">custom_encode</span><span·class="p"·data-group-id=" | 1180 | >·</span><span·class="nf">custom_encode</span><span·class="p"·data-group-id="9363672620-7">(</span><span·class="n">Value</span><span·class="p"·data-group-id="9363672620-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nc">json</span><span·class="p">:</span><span·class="nf">encode</[·...·truncated·by·diffoscope;·len:·783,·SHA:·cce9d1b655194a157d9cd7faf131a0d62f878e70d6e63f7e1892c8a7b3392479·...·]-8">)</span><span·class="p">.</span><span·class="gp·unselectable"> |
| 1181 | >·</span><span·class="nf">iolist_to_binary</span><span·class="p"·data-group-id=" | 1181 | >·</span><span·class="nf">iolist_to_binary</span><span·class="p"·data-group-id="9363672620-11">(</span><span·class="nf">custom_encode</span><span·class="p"·data-group-id="9363672620-12">(</span><span·class="p"·data-group-id="9363672620-13">[</span><span·class="p"·data-group-id="9363672620-14">{</span><span·class="ss">a</span><span·cla[·...·truncated·by·diffoscope;·len:·604,·SHA:·60702027f1ff402900724299840db35e611a65919faf9397112329176f8be6e3·...·]-11">)</span><span·class="p">.</span><span·class="w"> |
| 1182 | </span><span·class="p"·data-group-id=" | 1182 | </span><span·class="p"·data-group-id="9363672620-17"><<</span><span·class="s">"{\"a\":[],\"b\":1}"</span><span·class="p"·data-group-id="9363672620-17">>></span></code></pre> |
| 1183 | ··</section> | 1183 | ··</section> |
| 1184 | </section> | 1184 | </section> |
| 1185 | <section·class="detail"·id="encode_atom/2"> | 1185 | <section·class="detail"·id="encode_atom/2"> |
| 1186 | ··<div·class="detail-header"> | 1186 | ··<div·class="detail-header"> |
| 1187 | ····<a·href="#encode_atom/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1187 | ····<a·href="#encode_atom/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1188 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1188 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 1542, 19 lines modified | Offset 1542, 19 lines modified | ||
| 1542 | ······<div·class="specs"> | 1542 | ······<div·class="specs"> |
| 1543 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·format(Term·::·<a·href="#t:encode_value/0">encode_value</a>())·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:iodata/0">iodata</a>().</pre> | 1543 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·format(Term·::·<a·href="#t:encode_value/0">encode_value</a>())·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:iodata/0">iodata</a>().</pre> |
| 1544 | ······</div> | 1544 | ······</div> |
| 1545 | <p>Generates·formatted·JSON·corresponding·to·<code·class="inline">Term</code>.</p><p>Similiar·to·<a·href="#encode/1"><code·class="inline">encode/1</code></a>·but·with·added·whitespaces·for·formatting.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">put_chars</span><span·class="p"·data-group-id=" | 1545 | <p>Generates·formatted·JSON·corresponding·to·<code·class="inline">Term</code>.</p><p>Similiar·to·<a·href="#encode/1"><code·class="inline">encode/1</code></a>·but·with·added·whitespaces·for·formatting.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">put_chars</span><span·class="p"·data-group-id="5400469490-1">(</span><span·class="nc">json</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="5400469490-2">(</span><span·class="p"·data-group-id="5400469490-3">#{</span><span·class="ss">foo</span><span·class="w">·<[·...·truncated·by·diffoscope;·len:·540,·SHA:·06ec2a7719c0cfd755956cf0e4b023a37314b3a8f599d3dacf3f7d0a63993ebd·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 1546 | </span><span·class="p"·data-group-id=" | 1546 | </span><span·class="p"·data-group-id="5400469490-5">{</span><span·class="w"> |
| 1547 | ··</span><span·class="s">"baz"</span><span·class="p">:</span><span·class="w">·</span><span·class="mi">52</span><span·class="p">,</span><span·class="w"> | 1547 | ··</span><span·class="s">"baz"</span><span·class="p">:</span><span·class="w">·</span><span·class="mi">52</span><span·class="p">,</span><span·class="w"> |
| 1548 | ··</span><span·class="s">"foo"</span><span·class="p">:</span><span·class="w">·</span><span·class="s">"bar"</span><span·class="w"> | 1548 | ··</span><span·class="s">"foo"</span><span·class="p">:</span><span·class="w">·</span><span·class="s">"bar"</span><span·class="w"> |
| 1549 | </span><span·class="p"·data-group-id=" | 1549 | </span><span·class="p"·data-group-id="5400469490-5">}</span><span·class="w"> |
| 1550 | </span><span·class="ss">ok</span></code></pre> | 1550 | </span><span·class="ss">ok</span></code></pre> |
| 1551 | ··</section> | 1551 | ··</section> |
| 1552 | </section> | 1552 | </section> |
| 1553 | <section·class="detail"·id="format/2"> | 1553 | <section·class="detail"·id="format/2"> |
| 1554 | ··<div·class="detail-header"> | 1554 | ··<div·class="detail-header"> |
| 1555 | ····<a·href="#format/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1555 | ····<a·href="#format/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 1607, 28 lines modified | Offset 1607, 28 lines modified | ||
| 1607 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·format(Term·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:dynamic/0">dynamic</a>(),·Encoder·::·<a·href="#t:formatter/0">formatter</a>(),·Options·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:map/0">map</a>())·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:iodata/0">iodata</a>().</pre> | 1607 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·format(Term·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:dynamic/0">dynamic</a>(),·Encoder·::·<a·href="#t:formatter/0">formatter</a>(),·Options·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:map/0">map</a>())·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:iodata/0">iodata</a>().</pre> |
| 1608 | ······</div> | 1608 | ······</div> |
| 1609 | <p>Generates·formatted·JSON·corresponding·to·<code·class="inline">Term</code>.</p><p>Similar·to·<a·href="#encode/2"><code·class="inline">encode/2</code></a>,·can·be·customised·with·the·<code·class="inline">Encoder</code>·callback·and·<code·class="inline">Options</code>.</p><p><code·class="inline">Options</code>·can·include·'indent'·to·specify·number·of·spaces·per·level·and·'max'·which·loosely·limits | 1609 | <p>Generates·formatted·JSON·corresponding·to·<code·class="inline">Term</code>.</p><p>Similar·to·<a·href="#encode/2"><code·class="inline">encode/2</code></a>,·can·be·customised·with·the·<code·class="inline">Encoder</code>·callback·and·<code·class="inline">Options</code>.</p><p><code·class="inline">Options</code>·can·include·'indent'·to·specify·number·of·spaces·per·level·and·'max'·which·loosely·limits |
| 1610 | the·width·of·lists.</p><p>The·<code·class="inline">Encoder</code>·will·get·a·'State'·argument·which·contains·the·'Options'·maps·merged·with·other·data | 1610 | the·width·of·lists.</p><p>The·<code·class="inline">Encoder</code>·will·get·a·'State'·argument·which·contains·the·'Options'·maps·merged·with·other·data |
| 1611 | when·recursing·through·'Term'.</p><p><a·href="#format_value/3"><code·class="inline">format_value/3</code></a>·or·various·<code·class="inline">encode_*</code>·functions·in·this·module·can·be·used | 1611 | when·recursing·through·'Term'.</p><p><a·href="#format_value/3"><code·class="inline">format_value/3</code></a>·or·various·<code·class="inline">encode_*</code>·functions·in·this·module·can·be·used |
| 1612 | to·help·in·constructing·such·callbacks.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nf">formatter</span><span·class="p"·data-group-id=" | 1612 | to·help·in·constructing·such·callbacks.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nf">formatter</span><span·class="p"·data-group-id="8989097572-1">(</span><span·class="p"·data-group-id="8989097572-2">{</span><span·class="ss">posix_time</span><span·class="p">,</span><span·class="w">·</span><span·class="n">SysTimeSecs</span><span·class="p"·data-group-id="8989097572-2">}</span><span·class=[·...·truncated·by·diffoscope;·len:·182,·SHA:·5d631a210b00166b756c5f29999ce167995535e0a11bc872494cee1c0edab6f7·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1613 | ····</span><span·class="n">TimeStr</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">calendar</span><span·class="p">:</span><span·class="nf">system_time_to_rfc3339</span><span·class="p"·data-group-id=" | 1613 | ····</span><span·class="n">TimeStr</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">calendar</span><span·class="p">:</span><span·class="nf">system_time_to_rfc3339</span><span·class="p"·data-group-id="8989097572-3">(</span><span·class="n">SysTimeSecs</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8989097572-4">[</span><span·class="p"·data-group-id="8989097572-5">{</span><span·class="ss">offset</span><span·class="p">[·...·truncated·by·diffoscope;·len:·215,·SHA:·25d34330d6fc3aff3a591444fce83d053cd264c3d01e8e0c38f98ad8c8b81cc6·...·]-3">)</span><span·class="p">,</span><span·class="w"> |
| 1614 | ····</span><span·class="nc">json</span><span·class="p">:</span><span·class="nf">format_value</span><span·class="p"·data-group-id=" | 1614 | ····</span><span·class="nc">json</span><span·class="p">:</span><span·class="nf">format_value</span><span·class="p"·data-group-id="8989097572-6">(</span><span·class="nc">unicode</span><span·class="p">:</span><span·class="nf">characters_to_binary</span><span·class="p"·data-group-id="8989097572-7">(</span><span·class="n">TimeStr</span><span·class="p"·data-group-id="8989097572-7">)</span[·...·truncated·by·diffoscope;·len:·195,·SHA:·c4a62dbfc617ace87ff131d39e83129357b4dbb559584c601e8e45f89f9c744e·...·]-6">)</span><span·class="p">;</span><span·class="gp·unselectable"> |
| 1615 | >·</span><span·class="nf">formatter</span><span·class="p"·data-group-id=" | 1615 | >·</span><span·class="nf">formatter</span><span·class="p"·data-group-id="8989097572-8">(</span><span·class="n">Other</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Encode</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="p"·data-group-id="8989097572-8">)</span>[·...·truncated·by·diffoscope;·len:·439,·SHA:·75f03eb1fa36aa775412de42318fe1564f67ba2026108adad0101b6eed2cfe77·...·]-9">)</span><span·class="p">.</span><span·class="w"> |
| 1616 | </span><span·class="o">></span><span·class="gp·unselectable"> | 1616 | </span><span·class="o">></span><span·class="gp·unselectable"> |
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| 1157 | ······<div·class="specs"> | 1157 | ······<div·class="specs"> |
| 1158 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·append(ListOfLists)·->·List1·when·ListOfLists·::·[List],·List·::·[T],·List1·::·[T],·T·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> | 1158 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·append(ListOfLists)·->·List1·when·ListOfLists·::·[List],·List·::·[T],·List1·::·[T],·T·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 1159 | ······</div> | 1159 | ······</div> |
| 1160 | <p>Returns·a·list·in·which·all·the·sublists·of·<code·class="inline">ListOfLists</code>·have·been·appended.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id=" | 1160 | <p>Returns·a·list·in·which·all·the·sublists·of·<code·class="inline">ListOfLists</code>·have·been·appended.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id="0557290483-1">(</span><span·class="p"·data-group-id="0557290483-2">[</span><span·class="p"·data-group-id="0557290483-3">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">2</span><span·class="p">,</span><span·[·...·truncated·by·diffoscope;·len:·767,·SHA:·f9763514e6b7517bd58dd4f6498fcd83a1c8d3edb38894c6c1793743a0ad9236·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 1161 | </span><span·class="p"·data-group-id=" | 1161 | </span><span·class="p"·data-group-id="0557290483-6">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="ss">a</span><span·class="p">,</span><span·class="ss">b</span><span·class="[·...·truncated·by·diffoscope;·len:·175,·SHA:·412670a24bf1d4631237a33187d4bc8c63ed6bb9f469538f057e13317f3aee9b·...·]-6">]</span></code></pre> |
| 1162 | ··</section> | 1162 | ··</section> |
| 1163 | </section> | 1163 | </section> |
| 1164 | <section·class="detail"·id="append/2"> | 1164 | <section·class="detail"·id="append/2"> |
| 1165 | ··<div·class="detail-header"> | 1165 | ··<div·class="detail-header"> |
| 1166 | ····<a·href="#append/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1166 | ····<a·href="#append/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1167 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1167 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 1185, 15 lines modified | Offset 1185, 15 lines modified | ||
| 1185 | ······<div·class="specs"> | 1185 | ······<div·class="specs"> |
| 1186 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·append(List1,·List2)·->·List3·when·List1·::·[T],·List2·::·[T],·List3·::·[T],·T·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> | 1186 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·append(List1,·List2)·->·List3·when·List1·::·[T],·List2·::·[T],·List3·::·[T],·T·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 1187 | ······</div> | 1187 | ······</div> |
| 1188 | <p>Returns·a·new·list·<code·class="inline">List3</code>,·which·is·made·from·the·elements·of·<code·class="inline">List1</code>·followed | 1188 | <p>Returns·a·new·list·<code·class="inline">List3</code>,·which·is·made·from·the·elements·of·<code·class="inline">List1</code>·followed |
| 1189 | by·the·elements·of·<code·class="inline">List2</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id=" | 1189 | by·the·elements·of·<code·class="inline">List2</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id="5113789063-1">(</span><span·class="s">"abc"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"def"</span><span·class="p"·data-group-id="5113789063-1">)</span><span·class="p">.</span><span·class="w"> |
| 1190 | </span><span·class="s">"abcdef"</span></code></pre><p><code·class="inline">lists:append(A,·B)</code>·is·equivalent·to·<code·class="inline">A·++·B</code>.</p> | 1190 | </span><span·class="s">"abcdef"</span></code></pre><p><code·class="inline">lists:append(A,·B)</code>·is·equivalent·to·<code·class="inline">A·++·B</code>.</p> |
| 1191 | ··</section> | 1191 | ··</section> |
| 1192 | </section> | 1192 | </section> |
| 1193 | <section·class="detail"·id="concat/1"> | 1193 | <section·class="detail"·id="concat/1"> |
| 1194 | ··<div·class="detail-header"> | 1194 | ··<div·class="detail-header"> |
| 1195 | ····<a·href="#concat/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1195 | ····<a·href="#concat/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 1214, 15 lines modified | Offset 1214, 15 lines modified | ||
| 1214 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·concat(Things)·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>() | 1214 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·concat(Things)·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>() |
| 1215 | ················when·Things·::·[Thing],·Thing·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:atom/0">atom</a>()·|·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:integer/0">integer</a>()·|·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:float/0">float</a>()·|·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>().</pre> | 1215 | ················when·Things·::·[Thing],·Thing·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:atom/0">atom</a>()·|·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:integer/0">integer</a>()·|·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:float/0">float</a>()·|·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:string/0">string</a>().</pre> |
| 1216 | ······</div> | 1216 | ······</div> |
| 1217 | <p>Concatenates·the·text·representation·of·the·elements·of·<code·class="inline">Things</code>.·The·elements | 1217 | <p>Concatenates·the·text·representation·of·the·elements·of·<code·class="inline">Things</code>.·The·elements |
| 1218 | of·<code·class="inline">Things</code>·can·be·atoms,·integers,·floats,·or·strings.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">concat</span><span·class="p"·data-group-id=" | 1218 | of·<code·class="inline">Things</code>·can·be·atoms,·integers,·floats,·or·strings.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">concat</span><span·class="p"·data-group-id="2095283575-1">(</span><span·class="p"·data-group-id="2095283575-2">[</span><span·class="ss">doc</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'/'</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">file</[·...·truncated·by·diffoscope;·len:·255,·SHA:·c4540ce85cd30e327be0bcbf887e961569597246dd86a3d95876f25d6ce77adc·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 1219 | </span><span·class="s">"doc/file.3"</span></code></pre> | 1219 | </span><span·class="s">"doc/file.3"</span></code></pre> |
| 1220 | ··</section> | 1220 | ··</section> |
| 1221 | </section> | 1221 | </section> |
| 1222 | <section·class="detail"·id="delete/2"> | 1222 | <section·class="detail"·id="delete/2"> |
| 1223 | ··<div·class="detail-header"> | 1223 | ··<div·class="detail-header"> |
| 1224 | ····<a·href="#delete/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1224 | ····<a·href="#delete/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 1325, 16 lines modified | Offset 1325, 16 lines modified | ||
| 1325 | ······<div·class="specs"> | 1325 | ······<div·class="specs"> |
| 1326 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·duplicate(N,·Elem)·->·List·when·N·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0">non_neg_integer</a>(),·Elem·::·T,·List·::·[T],·T·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> | 1326 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·duplicate(N,·Elem)·->·List·when·N·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0">non_neg_integer</a>(),·Elem·::·T,·List·::·[T],·T·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 1327 | ······</div> | 1327 | ······</div> |
| 1328 | <p>Returns·a·list·containing·<code·class="inline">N</code>·copies·of·term·<code·class="inline">Elem</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">duplicate</span><span·class="p"·data-group-id=" | 1328 | <p>Returns·a·list·containing·<code·class="inline">N</code>·copies·of·term·<code·class="inline">Elem</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">duplicate</span><span·class="p"·data-group-id="3021932477-1">(</span><span·class="mi">5</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">xx</span><span·class="p"·data-group-id="3021932477-1">)</span><span·class="p">.</span><span·class="w"> |
| 1329 | </span><span·class="p"·data-group-id=" | 1329 | </span><span·class="p"·data-group-id="3021932477-2">[</span><span·class="ss">xx</span><span·class="p">,</span><span·class="ss">xx</span><span·class="p">,</span><span·class="ss">xx</span><span·class="p">,</span><span·class="ss">xx</span><span·class="p">,</span><span·class="ss">xx</span><span·cl[·...·truncated·by·diffoscope;·len:·33,·SHA:·0454de45743bb8811bae152c605d9a29d02a8aaee808e9fc981140975577404f·...·]-2">]</span></code></pre> |
| 1330 | ··</section> | 1330 | ··</section> |
| 1331 | </section> | 1331 | </section> |
| 1332 | <section·class="detail"·id="enumerate/1"> | 1332 | <section·class="detail"·id="enumerate/1"> |
| 1333 | ··<div·class="detail-header"> | 1333 | ··<div·class="detail-header"> |
| 1334 | ····<a·href="#enumerate/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1334 | ····<a·href="#enumerate/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1335 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1335 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 1421, 20 lines modified | Offset 1421, 20 lines modified | ||
| 1421 | ·······················T·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> | 1421 | ·······················T·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 1422 | ······</div> | 1422 | ······</div> |
| 1423 | <p>Returns·<code·class="inline">List1</code>·with·each·element·<code·class="inline">H</code>·replaced·by·a·tuple·of·form·<code·class="inline">{I,·H}</code>·where | 1423 | <p>Returns·<code·class="inline">List1</code>·with·each·element·<code·class="inline">H</code>·replaced·by·a·tuple·of·form·<code·class="inline">{I,·H}</code>·where |
| 1424 | <code·class="inline">I</code>·is·the·position·of·<code·class="inline">H</code>·in·<code·class="inline">List1</code>.·The·enumeration·starts·with·<code·class="inline">Index</code>·and | 1424 | <code·class="inline">I</code>·is·the·position·of·<code·class="inline">H</code>·in·<code·class="inline">List1</code>.·The·enumeration·starts·with·<code·class="inline">Index</code>·and |
| 1425 | increases·by·<code·class="inline">Step</code>·in·each·step.</p><p>That·is,·<a·href="#enumerate/3"><code·class="inline">enumerate/3</code></a>·behaves·as·if·it·had·been·defined·as | 1425 | increases·by·<code·class="inline">Step</code>·in·each·step.</p><p>That·is,·<a·href="#enumerate/3"><code·class="inline">enumerate/3</code></a>·behaves·as·if·it·had·been·defined·as |
| 1426 | follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">enumerate</span><span·class="p"·data-group-id="8 | 1426 | follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">enumerate</span><span·class="p"·data-group-id="6848936299-1">(</span><span·class="n">I</span><span·class="p">,</span><span·class="w">·</span><span·class="n">S</span><span·class="p">,</span><span·class="w">·</span><span·class="n">List</span><span·class="p"·data-group-id="6848936299-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1427 | ··</span><span·class="p"·data-group-id="8 | 1427 | ··</span><span·class="p"·data-group-id="6848936299-2">{</span><span·class="n">List1</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="w">·</span><span·class="p"·data-group-id="6848936299-2">}</span><span·class="w">·</span><span·class="o">=</span><span·cla[·...·truncated·by·diffoscope;·len:·1129,·SHA:·d044d0082124f48113e146bbbe2609d0c38696f861b0c3b80b46e57ecc737e75·...·]9-3">)</span><span·class="p">,</span><span·class="w"> |
| 1428 | ··</span><span·class="n">List1</span><span·class="p">.</span></code></pre><p>The·default·values·for·<code·class="inline">Index</code>·and·<code·class="inline">Step</code>·are·both·<code·class="inline">1</code>.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">enumerate</span><span·class="p"·data-group-id="38 | 1428 | ··</span><span·class="n">List1</span><span·class="p">.</span></code></pre><p>The·default·values·for·<code·class="inline">Index</code>·and·<code·class="inline">Step</code>·are·both·<code·class="inline">1</code>.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">enumerate</span><span·class="p"·data-group-id="8387854753-1">(</span><span·class="p"·data-group-id="8387854753-2">[</span><span·class="ss">a</span><span·class="p">,</span><span·class="ss">b</span><span·class="p">,</span><span·class="ss">c</span><span·class="p"·data-group-id="8387854753-2">]</span><span[·...·truncated·by·diffoscope;·len:·34,·SHA:·eaa1960bb7385166fee261ca304a08e225197c75766257ff0a56ce6ba5a5d0b7·...·]53-1">)</span><span·class="p">.</span><span·class="w"> |
| 1429 | </span><span·class="p"·data-group-id="3811427353-3">[</span><span·class="p"·data-group-id="3811427353-4">{</span><span·class="mi">1</span><span·class="p">,</span><span·class="ss">a</span><span·class="p"·data-group-id="3811427353-4">}</span><span·class="p">,</span><span·class="p"·data-group-id="3811427353-5">{</span><span·class="mi">2</span><span·class="p">,</span><span·class="ss">b</span><span·class="p"·data-group-id="3811427353-5">}</span><span·class="p">,</span><span·class="p"·data-group-id="3811427353-6">{</span><span·class="mi">3</span><span·class="p">,</span><span·class="ss">c</span><span·class="p"·data-group-id="3811427353-6">}</span><span·class="p"·data-group-id="3811427353-3">]</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">enumerate</span><span·class="p"·data-group-id="1758125992-1">(</span><span·class="mi">10</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1758125992-2">[</span><span·class="ss">a</span><span·class="p">,</span><span·class="ss">b</span><span·class="p">,</span><span·class="ss">c</span><span·class="p"·data-group-id="1758125992-2">]</span><span·class="p"·data-group-id="1758125992-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 1430 | </span><span·class="p"·data-group-id="1758125992-3">[</span><span·class="p"·data-group-id="1758125992-4">{</span><span·class="mi">10</span><span·class="p">,</span><span·class="ss">a</span><span·class="p"·data-group-id="1758125992-4">}</span><span·class="p">,</span><span·class="p"·data-group-id="1758125992-5">{</span><span·class="mi">11</span><span·class="p">,</span><span·class="ss">b</span><span·class="p"·data-group-id="1758125992-5">}</span><span·class="p">,</span><span·class="p"·data-group-id="1758125992-6">{</span><span·class="mi">12</span><span·class="p">,</span><span·class="ss">c</span><span·class="p"·data-group-id="1758125992-6">}</span><span·class="p"·data-group-id="1758125992-3">]</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">enumerate</span><span·class="p"·data-group-id="9290030833-1">(</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="o">-</span><span·class="mi">2</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9290030833-2">[</span><span·class="ss">a</span><span·class="p">,</span><span·class="ss">b</span><span·class="p">,</span><span·class="ss">c</span><span·class="p"·data-group-id="9290030833-2">]</span><span·class="p"·data-group-id="9290030833-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 1431 | </span><span·class="p"·data-group-id=" | 1429 | </span><span·class="p"·data-group-id="8387854753-3">[</span><span·class="p"·data-group-id="8387854753-4">{</span><span·class="mi">1</span><span·class="p">,</span><span·class="ss">a</span><span·class="p"·data-group-id="8387854753-4">}</span><span·class="p">,</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·1044,·SHA:·61dbac97078c4423013f70ed506b901b606fa6d6b303534484dfaacb96f27985·...·]> |
| 1430 | </span><span·class="p"·data-group-id="8719023813-3">[</span><span·class="p"·data-group-id="8719023813-4">{</span><span·class="mi">10</span><span·class="p">,</span><span·class="ss">a</span><span·class="p"·data-group-id="8719023813-4">}</span><span·class="p">,</span><span·class="p"·data-group-id="8719023813-5">{</span><span·class="mi">11</span><span·class="p">,</span><span·class="ss">b</span><span·class="p"·data-group-id="8719023813-5">}</span><span·class="p">,</span><span·class="p"·data-group-id="8719023813-6">{</span><span·class="mi">12</span><span·class="p">,</span><span·class="ss">c</span><span·class="p"·data-group-id="8719023813-6">}</span><span·class="p"·data-group-id="8719023813-3">]</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">enumerate</span><span·class="p"·data-group-id="7923454167-1">(</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="o">-</span><span·class="mi">2</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7923454167-2">[</span><span·class="ss">a</span><span·class="p">,</span><span·class="ss">b</span><span·class="p">,</span><span·class="ss">c</span><span·class="p"·data-group-id="7923454167-2">]</span><span·class="p"·data-group-id="7923454167-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 1431 | </span><span·class="p"·data-group-id="7923454167-3">[</span><span·class="p"·data-group-id="7923454167-4">{</span><span·class="mi">0</span><span·class="p">,</span><span·class="ss">a</span><span·class="p"·data-group-id="7923454167-4">}</span><span·class="p">,</span><span·class="p"·data-group-id="7923454167-5">{</span><span·class="o">-</span><span·class="mi">2</span><span·class="p">,</span><span·class="ss">b</span><span·class="p"·data-group-id="7923454167-5">}</span><span·class="p">,</span><span·class="p"·data-group-id="7923454167-6">{</span><span·class="o">-</span><span·class="mi">4</span><span·class="p">,</span><span·class="ss">c</span><span·class="p"·data-group-id="7923454167-6">}</span><span·class="p"·data-group-id="7923454167-3">]</span></code></pre> | ||
| 1432 | ··</section> | 1432 | ··</section> |
| 1433 | </section> | 1433 | </section> |
| 1434 | <section·class="detail"·id="filter/2"> | 1434 | <section·class="detail"·id="filter/2"> |
| 1435 | ··<div·class="detail-header"> | 1435 | ··<div·class="detail-header"> |
| 1436 | ····<a·href="#filter/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1436 | ····<a·href="#filter/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1437 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1437 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 1491, 23 lines modified | Offset 1491, 23 lines modified | ||
| 1491 | ·······················Value·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> | 1491 | ·······················Value·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 1492 | ······</div> | 1492 | ······</div> |
| 1493 | <p>Calls·<code·class="inline">Fun(Elem)</code>·on·successive·elements·<code·class="inline">Elem</code>·of·<code·class="inline">List1</code>·in·order·to·update·or | 1493 | <p>Calls·<code·class="inline">Fun(Elem)</code>·on·successive·elements·<code·class="inline">Elem</code>·of·<code·class="inline">List1</code>·in·order·to·update·or |
| 1494 | remove·elements·from·<code·class="inline">List1</code>.</p><p><code·class="inline">Fun/1</code>·must·return·either·a·Boolean·or·a·tuple·<code·class="inline">{true,·Value}</code>.·The·function | 1494 | remove·elements·from·<code·class="inline">List1</code>.</p><p><code·class="inline">Fun/1</code>·must·return·either·a·Boolean·or·a·tuple·<code·class="inline">{true,·Value}</code>.·The·function |
| 1495 | returns·the·list·of·elements·for·which·<code·class="inline">Fun</code>·returns·a·new·value,·where·a·value | 1495 | returns·the·list·of·elements·for·which·<code·class="inline">Fun</code>·returns·a·new·value,·where·a·value |
| 1496 | of·<code·class="inline">true</code>·is·synonymous·with·<code·class="inline">{true,·Elem}</code>.</p><p>That·is,·<code·class="inline">filtermap</code>·behaves·as·if·it·had·been·defined·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">filtermap</span><span·class="p"·data-group-id=" | 1496 | of·<code·class="inline">true</code>·is·synonymous·with·<code·class="inline">{true,·Elem}</code>.</p><p>That·is,·<code·class="inline">filtermap</code>·behaves·as·if·it·had·been·defined·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">filtermap</span><span·class="p"·data-group-id="9614191374-1">(</span><span·class="n">Fun</span><span·class="p">,</span><span·class="w">·</span><span·class="n">List1</span><span·class="p"·data-group-id="9614191374-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1497 | ····</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">foldr</span><span·class="p"·data-group-id=" | 1497 | ····</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">foldr</span><span·class="p"·data-group-id="9614191374-2">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="9614191374-3">(</span><span·class="n">Elem</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Acc</span><span·class="p"·data-group-id="9614191374-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1498 | ·······················</span><span·class="k">case</span><span·class="w">·</span><span·class="n">Fun</span><span·class="p"·data-group-id=" | 1498 | ·······················</span><span·class="k">case</span><span·class="w">·</span><span·class="n">Fun</span><span·class="p"·data-group-id="9614191374-4">(</span><span·class="n">Elem</span><span·class="p"·data-group-id="9614191374-4">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 1499 | ···························</span><span·class="ss">false</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Acc</span><span·class="p">;</span><span·class="w"> | 1499 | ···························</span><span·class="ss">false</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Acc</span><span·class="p">;</span><span·class="w"> |
| 1500 | ···························</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id=" | 1500 | ···························</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="9614191374-5">[</span><span·class="n">Elem</span><span·class="p">|</span><span·class="n">Acc</span><span·class="p"·data-group-id="9614191374-5">]</span><span·class="p">;</span><span·class="w"> |
| 1501 | ···························</span><span·class="p"·data-group-id=" | 1501 | ···························</span><span·class="p"·data-group-id="9614191374-6">{</span><span·class="ss">true</span><span·class="p">,</span><span·class="n">Value</span><span·class="p"·data-group-id="9614191374-6">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·147,·SHA:·bff0791471a70dd32d2729f59b1eea97814958e76f9c30958d9e97c43f1b5122·...·]-7">]</span><span·class="w"> |
| 1502 | ·······················</span><span·class="k">end</span><span·class="w"> | 1502 | ·······················</span><span·class="k">end</span><span·class="w"> |
| 1503 | ················</span><span·class="k">end</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id=" | 1503 | ················</span><span·class="k">end</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9614191374-8">[</span><span·class="p"·data-group-id="9614191374-8">]</span><span·class="p">,</span><span·class="w">·</span><span·class="n">List1</span><span·class="p"·data-group-id="9614191374-2">)</span><span·class="p">.</span></code></pre><p><em>Example:[·...·truncated·by·diffoscope;·len:·1819,·SHA:·063ab2c61ab81fed4e4838c4d07cf9632c68f90ea5ca3a49139f3f429ab2af30·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 1504 | </span><span·class="p"·data-group-id=" | 1504 | </span><span·class="p"·data-group-id="3120208087-5">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="3120208087-5">]</span></code></pre> |
| 1505 | ··</section> | 1505 | ··</section> |
| 1506 | </section> | 1506 | </section> |
| 1507 | <section·class="detail"·id="flatlength/1"> | 1507 | <section·class="detail"·id="flatlength/1"> |
| 1508 | ··<div·class="detail-header"> | 1508 | ··<div·class="detail-header"> |
| 1509 | ····<a·href="#flatlength/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1509 | ····<a·href="#flatlength/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1510 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1510 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 1554, 17 lines modified | Offset 1554, 17 lines modified | ||
| 1554 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·flatmap(Fun,·List1)·->·List2 | 1554 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·flatmap(Fun,·List1)·->·List2 |
| 1555 | ·················when·Fun·::·fun((A)·->·[B]),·List1·::·[A],·List2·::·[B],·A·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>(),·B·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> | 1555 | ·················when·Fun·::·fun((A)·->·[B]),·List1·::·[A],·List2·::·[B],·A·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>(),·B·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 1556 | ······</div> | 1556 | ······</div> |
| 1557 | <p>Takes·a·function·from·<code·class="inline">A</code>s·to·lists·of·<code·class="inline">B</code>s,·and·a·list·of·<code·class="inline">A</code>s·(<code·class="inline">List1</code>)·and | 1557 | <p>Takes·a·function·from·<code·class="inline">A</code>s·to·lists·of·<code·class="inline">B</code>s,·and·a·list·of·<code·class="inline">A</code>s·(<code·class="inline">List1</code>)·and |
| 1558 | produces·a·list·of·<code·class="inline">B</code>s·by·applying·the·function·to·every·element·in·<code·class="inline">List1</code>·and | 1558 | produces·a·list·of·<code·class="inline">B</code>s·by·applying·the·function·to·every·element·in·<code·class="inline">List1</code>·and |
| 1559 | appending·the·resulting·lists.</p><p>That·is,·<code·class="inline">flatmap</code>·behaves·as·if·it·had·been·defined·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">flatmap</span><span·class="p"·data-group-id=" | 1559 | appending·the·resulting·lists.</p><p>That·is,·<code·class="inline">flatmap</code>·behaves·as·if·it·had·been·defined·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">flatmap</span><span·class="p"·data-group-id="7159189651-1">(</span><span·class="n">Fun</span><span·class="p">,</span><span·class="w">·</span><span·class="n">List1</span><span·class="p"·data-group-id="7159189651-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1560 | ····</span><span·class="nf">append</span><span·class="p"·data-group-id=" | 1560 | ····</span><span·class="nf">append</span><span·class="p"·data-group-id="7159189651-2">(</span><span·class="nf">map</span><span·class="p"·data-group-id="7159189651-3">(</span><span·class="n">Fun</span><span·class="p">,</span><span·class="w">·</span><span·class="n">List1</span><span·class="p"·data-group-id="7159189651-3">)</span[·...·truncated·by·diffoscope;·len:·1073,·SHA:·e08e0cb8a35b141dc1bc38064e23bd83ab6d2cb1aef65aa3f6392e178ec7a481·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 1561 | </span><span·class="p"·data-group-id=" | 1561 | </span><span·class="p"·data-group-id="2983891368-5">[</span><span·class="ss">a</span><span·class="p">,</span><span·class="ss">a</span><span·class="p">,</span><span·class="ss">b</span><span·class="p">,</span><span·class="ss">b</span><span·class="p">,</span><span·class="ss">c</span><span·class="[·...·truncated·by·diffoscope;·len:·77,·SHA:·28502b33ee51625fd8777fc212919bd5ea008f10192e38b8b72b9919df8606b8·...·]-5">]</span></code></pre> |
| 1562 | ··</section> | 1562 | ··</section> |
| 1563 | </section> | 1563 | </section> |
| 1564 | <section·class="detail"·id="flatten/1"> | 1564 | <section·class="detail"·id="flatten/1"> |
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| Offset 731, 18 lines modified | Offset 731, 18 lines modified | ||
| 731 | ····················Pred·::·fun((Key,·Value)·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:boolean/0">boolean</a>()), | 731 | ····················Pred·::·fun((Key,·Value)·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:boolean/0">boolean</a>()), |
| 732 | ····················MapOrIter·::·#{Key·=>·Value}·|·<a·href="#t:iterator/2">iterator</a>(Key,·Value), | 732 | ····················MapOrIter·::·#{Key·=>·Value}·|·<a·href="#t:iterator/2">iterator</a>(Key,·Value), |
| 733 | ····················Map·::·#{Key·=>·Value}.</pre> | 733 | ····················Map·::·#{Key·=>·Value}.</pre> |
| 734 | ······</div> | 734 | ······</div> |
| 735 | <p>Returns·a·map·<code·class="inline">Map</code>·for·which·predicate·<code·class="inline">Pred</code>·holds·true·in·<code·class="inline">MapOrIter</code>.</p><p>The·call·fails·with·a·<code·class="inline">{badmap,Map}</code>·exception·if·<code·class="inline">MapOrIter</code>·is·not·a·map·or | 735 | <p>Returns·a·map·<code·class="inline">Map</code>·for·which·predicate·<code·class="inline">Pred</code>·holds·true·in·<code·class="inline">MapOrIter</code>.</p><p>The·call·fails·with·a·<code·class="inline">{badmap,Map}</code>·exception·if·<code·class="inline">MapOrIter</code>·is·not·a·map·or |
| 736 | valid·iterator,·or·with·<code·class="inline">badarg</code>·if·<code·class="inline">Pred</code>·is·not·a·function·of·arity·2.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">M</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6 | 736 | valid·iterator,·or·with·<code·class="inline">badarg</code>·if·<code·class="inline">Pred</code>·is·not·a·function·of·arity·2.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">M</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4265712456-1">#{</span><span·class="ss">a</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">2</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">b</span><span·class="w">·</span><span·clas[·...·truncated·by·diffoscope;·len:·812,·SHA:·be776c5b48e42dd9338450ccb39334f55d4ffd4935b2fae74f794ae6e26ec1c8·...·]6-1">}</span><span·class="p">,</span><span·class="w"> |
| 737 | ··</span><span·class="n">Pred</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="6 | 737 | ··</span><span·class="n">Pred</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="4265712456-2">(</span><span·class="n">K</span><span·class="p">,</span><span·class="n">V</span><span·class="p"·data-group-id="4265712456-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">is_atom</span><s[·...·truncated·by·diffoscope;·len:·424,·SHA:·9372439e1895e3ca391f63d73994032e0dda5af5990bcddacb06cefd7135fce6·...·]6-4">)</span><span·class="w">·</span><span·class="o">=:=</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 738 | ··</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">filter</span><span·class="p"·data-group-id="6 | 738 | ··</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">filter</span><span·class="p"·data-group-id="4265712456-5">(</span><span·class="n">Pred</span><span·class="p">,</span><span·class="n">M</span><span·class="p"·data-group-id="4265712456-5">)</span><span·class="p">.</span><span·class="w"> |
| 739 | </span><span·class="p"·data-group-id="6 | 739 | </span><span·class="p"·data-group-id="4265712456-6">#{</span><span·class="ss">a</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">2</span><span·class="p">,</span><span·class="ss">c</span><span·class="w">·</span><span·class="p">=></span><span·[·...·truncated·by·diffoscope;·len:·83,·SHA:·9146d0fe7f1c71a0318df8bf167f5b0460464149e8a396de6561b78c937604d7·...·]6-6">}</span></code></pre> |
| 740 | ··</section> | 740 | ··</section> |
| 741 | </section> | 741 | </section> |
| 742 | <section·class="detail"·id="filtermap/2"> | 742 | <section·class="detail"·id="filtermap/2"> |
| 743 | ··<div·class="detail-header"> | 743 | ··<div·class="detail-header"> |
| 744 | ····<a·href="#filtermap/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 744 | ····<a·href="#filtermap/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 745 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 745 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 771, 18 lines modified | Offset 771, 18 lines modified | ||
| 771 | ······</div> | 771 | ······</div> |
| 772 | <p>Returns·a·map·<code·class="inline">Map</code>·that·is·the·result·of·calling·<code·class="inline">Fun(Key,·Value1)</code>·for·every | 772 | <p>Returns·a·map·<code·class="inline">Map</code>·that·is·the·result·of·calling·<code·class="inline">Fun(Key,·Value1)</code>·for·every |
| 773 | <code·class="inline">Key</code>·to·value·<code·class="inline">Value1</code>·association·in·<code·class="inline">MapOrIter</code>·in·any·order.</p><p>If·<code·class="inline">Fun(Key,·Value1)</code>·returns·<code·class="inline">true</code>,·the·association·is·copied·to·the·result | 773 | <code·class="inline">Key</code>·to·value·<code·class="inline">Value1</code>·association·in·<code·class="inline">MapOrIter</code>·in·any·order.</p><p>If·<code·class="inline">Fun(Key,·Value1)</code>·returns·<code·class="inline">true</code>,·the·association·is·copied·to·the·result |
| 774 | map.·If·it·returns·<code·class="inline">false</code>,·the·association·is·not·copied.·If·it·returns | 774 | map.·If·it·returns·<code·class="inline">false</code>,·the·association·is·not·copied.·If·it·returns |
| 775 | <code·class="inline">{true,·NewValue}</code>,·the·value·for·<code·class="inline">Key</code>·is·replaced·with·<code·class="inline">NewValue</code>·in·the | 775 | <code·class="inline">{true,·NewValue}</code>,·the·value·for·<code·class="inline">Key</code>·is·replaced·with·<code·class="inline">NewValue</code>·in·the |
| 776 | result·map.</p><p>The·call·fails·with·a·<code·class="inline">{badmap,Map}</code>·exception·if·<code·class="inline">MapOrIter</code>·is·not·a·map·or | 776 | result·map.</p><p>The·call·fails·with·a·<code·class="inline">{badmap,Map}</code>·exception·if·<code·class="inline">MapOrIter</code>·is·not·a·map·or |
| 777 | valid·iterator,·or·with·<code·class="inline">badarg</code>·if·<code·class="inline">Fun</code>·is·not·a·function·of·arity·2.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">Fun</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="81 | 777 | valid·iterator,·or·with·<code·class="inline">badarg</code>·if·<code·class="inline">Fun</code>·is·not·a·function·of·arity·2.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">Fun</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="6813283885-1">(</span><span·class="n">K</span><span·class="p">,</span><span·class="n">V</span><span·class="p"·data-group-id="6813283885-1">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_atom</span><sp[·...·truncated·by·diffoscope;·len:·978,·SHA:·636c96c2a2e433db6c3d690a7ebdf3196be70aeec866f7b91bed74f169ce0088·...·]-5">)</span><span·class="w">·</span><span·class="o">=:=</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 778 | ··</span><span·class="n">Map</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="81 | 778 | ··</span><span·class="n">Map</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6813283885-6">#{</span><span·class="ss">k1</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"k2"</span><span·class="w">·</sp[·...·truncated·by·diffoscope;·len:·307,·SHA:·14b202161ca0c8474580356a6db0a32a6e230ab78fa273b82a526a3a65ec183c·...·]-6">}</span><span·class="p">,</span><span·class="w"> |
| 779 | ··</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">filtermap</span><span·class="p"·data-group-id="81 | 779 | ··</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">filtermap</span><span·class="p"·data-group-id="6813283885-7">(</span><span·class="n">Fun</span><span·class="p">,</span><span·class="n">Map</span><span·class="p"·data-group-id="6813283885-7">)</span><span·class="p">.</span><span·class="w"> |
| 780 | </span><span·class="p"·data-group-id="81 | 780 | </span><span·class="p"·data-group-id="6813283885-8">#{</span><span·class="ss">k1</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">2</span><span·class="p">,</span><span·class="s">"k2"</span><span·class="w">·</span><span·class="p">=>[·...·truncated·by·diffoscope;·len:·97,·SHA:·fb4a75f9e86bf9fcfce185efb9f84333aa9659792b40f21ee50b0ccdb5223d05·...·]-8">}</span></code></pre> |
| 781 | ··</section> | 781 | ··</section> |
| 782 | </section> | 782 | </section> |
| 783 | <section·class="detail"·id="find/2"> | 783 | <section·class="detail"·id="find/2"> |
| 784 | ··<div·class="detail-header"> | 784 | ··<div·class="detail-header"> |
| 785 | ····<a·href="#find/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 785 | ····<a·href="#find/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 786 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 786 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 803, 18 lines modified | Offset 803, 18 lines modified | ||
| 803 | ······<div·class="specs"> | 803 | ······<div·class="specs"> |
| 804 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·find(Key,·Map)·->·{ok,·Value}·|·error·when·Map·::·#{Key·=>·Value,·_·=>·_}.</pre> | 804 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·find(Key,·Map)·->·{ok,·Value}·|·error·when·Map·::·#{Key·=>·Value,·_·=>·_}.</pre> |
| 805 | ······</div> | 805 | ······</div> |
| 806 | <p>Returns·a·tuple·<code·class="inline">{ok,·Value}</code>,·where·<code·class="inline">Value</code>·is·the·value·associated·with·<code·class="inline">Key</code>, | 806 | <p>Returns·a·tuple·<code·class="inline">{ok,·Value}</code>,·where·<code·class="inline">Value</code>·is·the·value·associated·with·<code·class="inline">Key</code>, |
| 807 | or·<code·class="inline">error</code>·if·no·value·is·associated·with·<code·class="inline">Key</code>·in·<code·class="inline">Map</code>.</p><p>The·call·fails·with·a·<code·class="inline">{badmap,Map}</code>·exception·if·<code·class="inline">Map</code>·is·not·a·map.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">Map</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 807 | or·<code·class="inline">error</code>·if·no·value·is·associated·with·<code·class="inline">Key</code>·in·<code·class="inline">Map</code>.</p><p>The·call·fails·with·a·<code·class="inline">{badmap,Map}</code>·exception·if·<code·class="inline">Map</code>·is·not·a·map.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">Map</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="7768532252-1">#{</span><span·class="s">"hi"</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">42</span><span·class="p"·data-group-id="7768532252-1">}</span><span·class="p">,</span><span·class="w"> |
| 808 | ··</span><span·class="n">Key</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"hi"</span><span·class="p">,</span><span·class="w"> | 808 | ··</span><span·class="n">Key</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"hi"</span><span·class="p">,</span><span·class="w"> |
| 809 | ··</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">find</span><span·class="p"·data-group-id=" | 809 | ··</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">find</span><span·class="p"·data-group-id="7768532252-2">(</span><span·class="n">Key</span><span·class="p">,</span><span·class="n">Map</span><span·class="p"·data-group-id="7768532252-2">)</span><span·class="p">.</span><span·class="w"> |
| 810 | </span><span·class="p"·data-group-id=" | 810 | </span><span·class="p"·data-group-id="7768532252-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="mi">42</span><span·class="p"·data-group-id="7768532252-3">}</span></code></pre> |
| 811 | ··</section> | 811 | ··</section> |
| 812 | </section> | 812 | </section> |
| 813 | <section·class="detail"·id="fold/3"> | 813 | <section·class="detail"·id="fold/3"> |
| 814 | ··<div·class="detail-header"> | 814 | ··<div·class="detail-header"> |
| 815 | ····<a·href="#fold/3"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 815 | ····<a·href="#fold/3"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 816 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 816 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 845, 17 lines modified | Offset 845, 17 lines modified | ||
| 845 | ······</div> | 845 | ······</div> |
| 846 | <p>Calls·<code·class="inline">F(Key,·Value,·AccIn)</code>·for·every·<code·class="inline">Key</code>·to·value·<code·class="inline">Value</code>·association·in | 846 | <p>Calls·<code·class="inline">F(Key,·Value,·AccIn)</code>·for·every·<code·class="inline">Key</code>·to·value·<code·class="inline">Value</code>·association·in |
| 847 | <code·class="inline">MapOrIter</code>·in·any·order.·Function·<code·class="inline">fun·F/3</code>·must·return·a·new·accumulator, | 847 | <code·class="inline">MapOrIter</code>·in·any·order.·Function·<code·class="inline">fun·F/3</code>·must·return·a·new·accumulator, |
| 848 | which·is·passed·to·the·next·successive·call.·This·function·returns·the·final | 848 | which·is·passed·to·the·next·successive·call.·This·function·returns·the·final |
| 849 | value·of·the·accumulator.·The·initial·accumulator·value·<code·class="inline">Init</code>·is·returned·if | 849 | value·of·the·accumulator.·The·initial·accumulator·value·<code·class="inline">Init</code>·is·returned·if |
| 850 | the·map·is·empty.</p><p>The·call·fails·with·a·<code·class="inline">{badmap,Map}</code>·exception·if·<code·class="inline">MapOrIter</code>·is·not·a·map·or | 850 | the·map·is·empty.</p><p>The·call·fails·with·a·<code·class="inline">{badmap,Map}</code>·exception·if·<code·class="inline">MapOrIter</code>·is·not·a·map·or |
| 851 | valid·iterator,·or·with·<code·class="inline">badarg</code>·if·<code·class="inline">Fun</code>·is·not·a·function·of·arity·3.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">Fun</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 851 | valid·iterator,·or·with·<code·class="inline">badarg</code>·if·<code·class="inline">Fun</code>·is·not·a·function·of·arity·3.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">Fun</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="8036596178-1">(</span><span·class="n">K</span><span·class="p">,</span><span·class="n">V</span><span·class="p">,</span><span·class="n">AccIn</span><span·class="p"·data-group-id="8036596178-1">)</span><span·class="w">·</span><span·class="k">when</span><span·[·...·truncated·by·diffoscope;·len:·167,·SHA:·d70e648b895e2bfa998477cbb73019a295c60b6298770da253693af84dd44f51·...·]-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">AccIn</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="n">V</span><span·class="w">·</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 852 | ··</span><span·class="n">Map</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 852 | ··</span><span·class="n">Map</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="8036596178-3">#{</span><span·class="s">"k1"</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"k2"</span><span·clas[·...·truncated·by·diffoscope;·len:·318,·SHA:·95c05ad968591dd2836149e4ab6f50c76a7349f793782c747ce1d24b5e8ae914·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 853 | ··</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">fold</span><span·class="p"·data-group-id=" | 853 | ··</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">fold</span><span·class="p"·data-group-id="8036596178-4">(</span><span·class="n">Fun</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="n">Map</span><span·class="p"·data-group-id="8036596178-4">)</span><span·class="p">.</span><span·class="w"> |
| 854 | </span><span·class="mi">6</span></code></pre> | 854 | </span><span·class="mi">6</span></code></pre> |
| 855 | ··</section> | 855 | ··</section> |
| 856 | </section> | 856 | </section> |
| 857 | <section·class="detail"·id="foreach/2"> | 857 | <section·class="detail"·id="foreach/2"> |
| 858 | ··<div·class="detail-header"> | 858 | ··<div·class="detail-header"> |
| 859 | ····<a·href="#foreach/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 859 | ····<a·href="#foreach/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 910, 16 lines modified | Offset 910, 16 lines modified | ||
| 910 | ······<div·class="specs"> | 910 | ······<div·class="specs"> |
| 911 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·from_keys(Keys,·Value)·->·Map·when·Keys·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:list/0">list</a>(),·Value·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>(),·Map·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:map/0">map</a>().</pre> | 911 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·from_keys(Keys,·Value)·->·Map·when·Keys·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:list/0">list</a>(),·Value·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>(),·Map·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:map/0">map</a>().</pre> |
| 912 | ······</div> | 912 | ······</div> |
| 913 | <p>Takes·a·list·of·keys·and·a·value·and·builds·a·map·where·all·keys·point·to·the | 913 | <p>Takes·a·list·of·keys·and·a·value·and·builds·a·map·where·all·keys·point·to·the |
| 914 | same·value.·The·key·can·be·in·any·order,·and·keys·and·value·can·be·of·any·term.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">Keys</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 914 | same·value.·The·key·can·be·in·any·order,·and·keys·and·value·can·be·of·any·term.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">Keys</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="9930521252-1">[</span><span·class="s">"a"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"b"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"c"</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·351,·SHA:·b22ceda2ce85bee28c4a49707c4ce36a4e785444eb4fffe77a5be61c0bfadaf5·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 915 | </span><span·class="p"·data-group-id=" | 915 | </span><span·class="p"·data-group-id="9930521252-3">#{</span><span·class="s">"a"</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">ok</span><span·class="p">,</span><span·class="s">"b"</span><span·class="w">·</span><span·class[·...·truncated·by·diffoscope;·len:·270,·SHA:·21856f894d17d20d7cafbc308134cabc623a6a77e254a09ce20cae8aa9186bbe·...·]-3">}</span></code></pre> |
| 916 | ··</section> | 916 | ··</section> |
| 917 | </section> | 917 | </section> |
| 918 | <section·class="detail"·id="from_list/1"> | 918 | <section·class="detail"·id="from_list/1"> |
| 919 | ··<div·class="detail-header"> | 919 | ··<div·class="detail-header"> |
| 920 | ····<a·href="#from_list/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 920 | ····<a·href="#from_list/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 921 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 921 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 941 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·from_list(List)·->·Map·when·List·::·[{Key,·Value}],·Key·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>(),·Value·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>(),·Map·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:map/0">map</a>().</pre> | 941 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·from_list(List)·->·Map·when·List·::·[{Key,·Value}],·Key·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>(),·Value·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>(),·Map·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:map/0">map</a>().</pre> |
| 942 | ······</div> | 942 | ······</div> |
| 943 | <p>Takes·a·list·of·key-value·tuples·elements·and·builds·a·map.·The·associations·can | 943 | <p>Takes·a·list·of·key-value·tuples·elements·and·builds·a·map.·The·associations·can |
| 944 | be·in·any·order,·and·both·keys·and·values·in·the·association·can·be·of·any·term.</p><p>If·the·same·key·appears·more·than·once,·the·latter·(right-most)·value·is·used | 944 | be·in·any·order,·and·both·keys·and·values·in·the·association·can·be·of·any·term.</p><p>If·the·same·key·appears·more·than·once,·the·latter·(right-most)·value·is·used |
| 945 | and·the·previous·values·are·ignored.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">List</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 945 | and·the·previous·values·are·ignored.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">List</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="0612039945-1">[</span><span·class="p"·data-group-id="0612039945-2">{</span><span·class="s">"a"</span><span·class="p">,</span><span·class="ss">ignored</span><span·class="p"·data-group-id="0612039945-2">}</span><span·class="p">,</span><span·class="[·...·truncated·by·diffoscope;·len:·660,·SHA:·aed2753585ae6f15d6b0a36ff4d97055cabd99467e994ee89f701a17ed9ab4cf·...·]-1">]</span><span·class="p">,</span><span·class="w"> |
| 946 | ··</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">from_list</span><span·class="p"·data-group-id=" | 946 | ··</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">from_list</span><span·class="p"·data-group-id="0612039945-6">(</span><span·class="n">List</span><span·class="p"·data-group-id="0612039945-6">)</span><span·class="p">.</span><span·class="w"> |
| 947 | </span><span·class="p"·data-group-id=" | 947 | </span><span·class="p"·data-group-id="0612039945-7">#{</span><span·class="mi">42</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">value_three</span><span·class="p">,</span><span·class="mi">1337</span><span·class="w">·</span><span·class="p">=>[·...·truncated·by·diffoscope;·len:·278,·SHA:·ac39b1b978db78160d3be8f48322f08300dd5af7b47a1355ac036a2456e83504·...·]-7">}</span></code></pre> |
| 948 | ··</section> | 948 | ··</section> |
| 949 | </section> | 949 | </section> |
| 950 | <section·class="detail"·id="get/2"> | 950 | <section·class="detail"·id="get/2"> |
| 951 | ··<div·class="detail-header"> | 951 | ··<div·class="detail-header"> |
| 952 | ····<a·href="#get/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 952 | ····<a·href="#get/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 953 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 953 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 973 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·get(Key,·Map)·->·Value·when·Key·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>(),·Map·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:map/0">map</a>(),·Value·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> | 973 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·get(Key,·Map)·->·Value·when·Key·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>(),·Map·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:map/0">map</a>(),·Value·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 974 | ······</div> | 974 | ······</div> |
| 975 | <p>Returns·value·<code·class="inline">Value</code>·associated·with·<code·class="inline">Key</code>·if·<code·class="inline">Map</code>·contains·<code·class="inline">Key</code>.</p><p>The·call·fails·with·a·<code·class="inline">{badmap,Map}</code>·exception·if·<code·class="inline">Map</code>·is·not·a·map,·or·with·a | 975 | <p>Returns·value·<code·class="inline">Value</code>·associated·with·<code·class="inline">Key</code>·if·<code·class="inline">Map</code>·contains·<code·class="inline">Key</code>.</p><p>The·call·fails·with·a·<code·class="inline">{badmap,Map}</code>·exception·if·<code·class="inline">Map</code>·is·not·a·map,·or·with·a |
| 976 | <code·class="inline">{badkey,Key}</code>·exception·if·no·value·is·associated·with·<code·class="inline">Key</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">Key</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">1337</span><span·class="p">,</span><span·class="w"> | 976 | <code·class="inline">{badkey,Key}</code>·exception·if·no·value·is·associated·with·<code·class="inline">Key</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">Key</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">1337</span><span·class="p">,</span><span·class="w"> |
| 977 | ··</span><span·class="n">Map</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 977 | ··</span><span·class="n">Map</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="8710259306-1">#{</span><span·class="mi">42</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">value_two</span><span·class="p">,</span><span·class="mi">1337</span><span·class="w">·</span><span·class="p">=><[·...·truncated·by·diffoscope;·len:·274,·SHA:·a97a21801b34a690ff162cf26805e8728ae223a16482b147420c0919be25c7ee·...·]06-1">}</span><span·class="p">,</span><span·class="w"> |
| 978 | ··</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">get</span><span·class="p"·data-group-id=" | 978 | ··</span><span·class="nc">maps</span><span·class="p">:</span><span·class="nf">get</span><span·class="p"·data-group-id="8710259306-2">(</span><span·class="n">Key</span><span·class="p">,</span><span·class="n">Map</span><span·class="p"·data-group-id="8710259306-2">)</span><span·class="p">.</span><span·class="w"> |
| 979 | </span><span·class="s">"value·one"</span></code></pre> | 979 | </span><span·class="s">"value·one"</span></code></pre> |
| 980 | ··</section> | 980 | ··</section> |
| 981 | </section> | 981 | </section> |
| 982 | <section·class="detail"·id="get/3"> | 982 | <section·class="detail"·id="get/3"> |
| 983 | ··<div·class="detail-header"> | 983 | ··<div·class="detail-header"> |
| 984 | ····<a·href="#get/3"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 984 | ····<a·href="#get/3"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
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| 150 | ··</a> | 150 | ··</a> |
| 151 | ··<span·class="text">Example·1</span> | 151 | ··<span·class="text">Example·1</span> |
| 152 | </h2> | 152 | </h2> |
| 153 | <p>Using·<a·href="ets.html#select/2"><code·class="inline">ets:select/2</code></a>·and·a·match·specification,·one·can·filter·out·rows·of·a | 153 | <p>Using·<a·href="ets.html#select/2"><code·class="inline">ets:select/2</code></a>·and·a·match·specification,·one·can·filter·out·rows·of·a |
| 154 | table·and·construct·a·list·of·tuples·containing·relevant·parts·of·the·data·in | 154 | table·and·construct·a·list·of·tuples·containing·relevant·parts·of·the·data·in |
| 155 | these·rows.·One·can·use·<a·href="ets.html#foldl/3"><code·class="inline">ets:foldl/3</code></a>·instead,·but·the·<a·href="ets.html#select/2"><code·class="inline">ets:select/2</code></a>·call·is | 155 | these·rows.·One·can·use·<a·href="ets.html#foldl/3"><code·class="inline">ets:foldl/3</code></a>·instead,·but·the·<a·href="ets.html#select/2"><code·class="inline">ets:select/2</code></a>·call·is |
| 156 | far·more·efficient.·Without·the·translation·provided·by·<code·class="inline">ms_transform</code>,·one·must | 156 | far·more·efficient.·Without·the·translation·provided·by·<code·class="inline">ms_transform</code>,·one·must |
| 157 | struggle·with·writing·match·specifications·terms·to·accommodate·this.</p><p>Consider·a·simple·table·of·employees:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 157 | struggle·with·writing·match·specifications·terms·to·accommodate·this.</p><p>Consider·a·simple·table·of·employees:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="9574336266-1">(</span><span·class="ss">emp</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9574336266-2">{</span><span·class="ss">empno</span><span·class="p">,</span><span·class="w">·····</span><span·class="c1">%Employee·number·as·a·string,·the·key</span><span·class="w"> |
| 158 | ··············</span><span·class="ss">surname</span><span·class="p">,</span><span·class="w">···</span><span·class="c1">%Surname·of·the·employee</span><span·class="w"> | 158 | ··············</span><span·class="ss">surname</span><span·class="p">,</span><span·class="w">···</span><span·class="c1">%Surname·of·the·employee</span><span·class="w"> |
| 159 | ··············</span><span·class="ss">givenname</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%Given·name·of·employee</span><span·class="w"> | 159 | ··············</span><span·class="ss">givenname</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%Given·name·of·employee</span><span·class="w"> |
| 160 | ··············</span><span·class="ss">dept</span><span·class="p">,</span><span·class="w">······</span><span·class="c1">%Department,·one·of·{dev,sales,prod,adm}</span><span·class="w"> | 160 | ··············</span><span·class="ss">dept</span><span·class="p">,</span><span·class="w">······</span><span·class="c1">%Department,·one·of·{dev,sales,prod,adm}</span><span·class="w"> |
| 161 | ··············</span><span·class="ss">empyear</span><span·class="p"·data-group-id=" | 161 | ··············</span><span·class="ss">empyear</span><span·class="p"·data-group-id="9574336266-2">}</span><span·class="p"·data-group-id="9574336266-1">)</span><span·class="p">.</span><span·class="w">·</span><span·class="c1">%Year·the·employee·was·employed</span></code></pre><p>We·create·the·table·using:</p><pre><code·class="text">ets:new([·...·truncated·by·diffoscope;·len:·641,·SHA:·4d7bd0b269419c73bfbbfa6c2969d5ee7693c55154cf7c6b374196e7255c5974·...·]-2">}</span><span·class="p">,</span><span·class="w"> |
| 162 | ·</span><span·class="p"·data-group-id=" | 162 | ·</span><span·class="p"·data-group-id="2722800171-3">{</span><span·class="ss">emp</span><span·class="p">,</span><span·class="s">"041231"</span><span·class="p">,</span><span·class="s">"Doe"</span><span·class="p">,</span><span·class="s">"John"</span><span·class="p">,[·...·truncated·by·diffoscope;·len:·128,·SHA:·af9f9f5f00fac8d82d49f1be5815cb77951ff8eec74ee813d1fd84906085861b·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 163 | ·</span><span·class="p"·data-group-id=" | 163 | ·</span><span·class="p"·data-group-id="2722800171-4">{</span><span·class="ss">emp</span><span·class="p">,</span><span·class="s">"052341"</span><span·class="p">,</span><span·class="s">"Smith"</span><span·class="p">,</span><span·class="s">"John"</span><span·class="p"[·...·truncated·by·diffoscope;·len:·129,·SHA:·1f81ac7f2e38260deaff3fabc305cdd4bd46e7f45aaa7a8d7e48196927479a3c·...·]-4">}</span><span·class="p">,</span><span·class="w"> |
| 164 | ·</span><span·class="p"·data-group-id=" | 164 | ·</span><span·class="p"·data-group-id="2722800171-5">{</span><span·class="ss">emp</span><span·class="p">,</span><span·class="s">"076324"</span><span·class="p">,</span><span·class="s">"Smith"</span><span·class="p">,</span><span·class="s">"Ella"</span><span·class="p"[·...·truncated·by·diffoscope;·len:·131,·SHA:·23299785bb7aa77da8820d9c22e5db2128d0f075937984045bf6402b7ea9b379·...·]-5">}</span><span·class="p">,</span><span·class="w"> |
| 165 | ·</span><span·class="p"·data-group-id=" | 165 | ·</span><span·class="p"·data-group-id="2722800171-6">{</span><span·class="ss">emp</span><span·class="p">,</span><span·class="s">"122334"</span><span·class="p">,</span><span·class="s">"Weston"</span><span·class="p">,</span><span·class="s">"Anna"</span><span·class="p[·...·truncated·by·diffoscope;·len:·131,·SHA:·236b37fe23a447f7024fc59b9c97a63f615db75db0336fdfbca7f70ca4d125da·...·]-6">}</span><span·class="p">,</span><span·class="w"> |
| 166 | ·</span><span·class="p"·data-group-id=" | 166 | ·</span><span·class="p"·data-group-id="2722800171-7">{</span><span·class="ss">emp</span><span·class="p">,</span><span·class="s">"535216"</span><span·class="p">,</span><span·class="s">"Chalker"</span><span·class="p">,</span><span·class="s">"Samuel"</span><span·class[·...·truncated·by·diffoscope;·len:·133,·SHA:·864c650a5673301ecee221f41970cea308745c567ff696c4f127b8aeddd6d9b4·...·]-7">}</span><span·class="p">,</span><span·class="w"> |
| 167 | ·</span><span·class="p"·data-group-id=" | 167 | ·</span><span·class="p"·data-group-id="2722800171-8">{</span><span·class="ss">emp</span><span·class="p">,</span><span·class="s">"789789"</span><span·class="p">,</span><span·class="s">"Harrysson"</span><span·class="p">,</span><span·class="s">"Joe"</span><span·class=[·...·truncated·by·diffoscope;·len:·132,·SHA:·f0a2e3c34a88a209f27d885e005142fa5843adbdc61dba6b5c74baeb0d41c56d·...·]-8">}</span><span·class="p">,</span><span·class="w"> |
| 168 | ·</span><span·class="p"·data-group-id=" | 168 | ·</span><span·class="p"·data-group-id="2722800171-9">{</span><span·class="ss">emp</span><span·class="p">,</span><span·class="s">"963721"</span><span·class="p">,</span><span·class="s">"Scott"</span><span·class="p">,</span><span·class="s">"Juliana"</span><span·class=[·...·truncated·by·diffoscope;·len:·132,·SHA:·2deff01ab0a4638c2de8997e969b7d592a4298304b9fcee940f9bb3ae986f343·...·]-9">}</span><span·class="p">,</span><span·class="w"> |
| 169 | ·</span><span·class="p"·data-group-id=" | 169 | ·</span><span·class="p"·data-group-id="2722800171-10">{</span><span·class="ss">emp</span><span·class="p">,</span><span·class="s">"989891"</span><span·class="p">,</span><span·class="s">"Brown"</span><span·class="p">,</span><span·class="s">"Gabriel"</span><span·class[·...·truncated·by·diffoscope;·len:·188,·SHA:·51b3bfdfe4f65b49daf44ab50de831c73cf2e10adcfcaaba41fc61724e7b013f·...·]-1">]</span></code></pre><p>Assuming·that·we·want·the·employee·numbers·of·everyone·in·the·sales·department, |
| 170 | there·are·several·ways.</p><p><a·href="ets.html#match/2"><code·class="inline">ets:match/2</code></a>·can·be·used:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">match</span><span·class="p"·data-group-id=" | 170 | there·are·several·ways.</p><p><a·href="ets.html#match/2"><code·class="inline">ets:match/2</code></a>·can·be·used:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">match</span><span·class="p"·data-group-id="7187052439-1">(</span><span·class="ss">emp_tab</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7187052439-2">{</span><span·class="ss">'_'</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">&#[·...·truncated·by·diffoscope;·len:·437,·SHA:·b93597f26a6e07d0f2f281fd5c026c39f81d120c2ed3a459dd1875ebdef56a60·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 171 | </span><span·class="p"·data-group-id=" | 171 | </span><span·class="p"·data-group-id="7187052439-3">[</span><span·class="p"·data-group-id="7187052439-4">[</span><span·class="s">"011103"</span><span·class="p"·data-group-id="7187052439-4">]</span><span·class="p">,</span><span·class="p"·data-group-id="7187052439-5">[</span><span·clas[·...·truncated·by·diffoscope;·len:·125,·SHA:·b79b3a22f6aad964e0f3967c0b725b5cd502706154b4010eec49f348c5ab7cd1·...·]-3">]</span></code></pre><p><a·href="ets.html#match/2"><code·class="inline">ets:match/2</code></a>·uses·a·simpler·type·of·match·specification,·but·it·is·still |
| 172 | unreadable,·and·one·has·little·control·over·the·returned·result.·It·is·always·a | 172 | unreadable,·and·one·has·little·control·over·the·returned·result.·It·is·always·a |
| 173 | list·of·lists.</p><p><a·href="ets.html#foldl/3"><code·class="inline">ets:foldl/3</code></a>·or·<a·href="ets.html#foldr/3"><code·class="inline">ets:foldr/3</code></a>·can·be·used·to·avoid·the·nested·lists:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">foldr</span><span·class="p"·data-group-id=" | 173 | list·of·lists.</p><p><a·href="ets.html#foldl/3"><code·class="inline">ets:foldl/3</code></a>·or·<a·href="ets.html#foldr/3"><code·class="inline">ets:foldr/3</code></a>·can·be·used·to·avoid·the·nested·lists:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">foldr</span><span·class="p"·data-group-id="3480328494-1">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="3480328494-2">(</span><span·class="o">#</span><span·class="ss">emp</span><span·class="p"·data-group-id="3480328494-3">{</span><span·class="ss">empno</span><span·class="w">·</sp[·...·truncated·by·diffoscope;·len:·700,·SHA:·492de0d2ecdceafe8a56f837388faed18863b426f9d048216f33a10db0db7082·...·]-4">]</span><span·class="p">;</span><span·class="w"> |
| 174 | ·············</span><span·class="p"·data-group-id=" | 174 | ·············</span><span·class="p"·data-group-id="3480328494-5">(</span><span·class="p">_</span><span·class="p">,</span><span·class="n">Acc</span><span·class="p"·data-group-id="3480328494-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Acc</span><span·class="w"> |
| 175 | ··········</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 175 | ··········</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 176 | ··········</span><span·class="p"·data-group-id=" | 176 | ··········</span><span·class="p"·data-group-id="3480328494-6">[</span><span·class="p"·data-group-id="3480328494-6">]</span><span·class="p">,</span><span·class="w"> |
| 177 | ··········</span><span·class="ss">emp_tab</span><span·class="p"·data-group-id=" | 177 | ··········</span><span·class="ss">emp_tab</span><span·class="p"·data-group-id="3480328494-1">)</span><span·class="p">.</span></code></pre><p>The·result·is·<code·class="inline">["011103","076324"]</code>.·The·fun·is·straightforward,·so·the·only |
| 178 | problem·is·that·all·the·data·from·the·table·must·be·transferred·from·the·table | 178 | problem·is·that·all·the·data·from·the·table·must·be·transferred·from·the·table |
| 179 | to·the·calling·process·for·filtering.·That·is·inefficient·compared·to·the | 179 | to·the·calling·process·for·filtering.·That·is·inefficient·compared·to·the |
| 180 | <a·href="ets.html#match/2"><code·class="inline">ets:match/2</code></a>·call·where·the·filtering·can·be·done·"inside"·the·emulator·and | 180 | <a·href="ets.html#match/2"><code·class="inline">ets:match/2</code></a>·call·where·the·filtering·can·be·done·"inside"·the·emulator·and |
| 181 | only·the·result·is·transferred·to·the·process.</p><p>Consider·a·"pure"·<a·href="ets.html#select/2"><code·class="inline">ets:select/2</code></a>·call·that·does·what·<code·class="inline">ets:foldr</code>·does:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id="2 | 181 | only·the·result·is·transferred·to·the·process.</p><p>Consider·a·"pure"·<a·href="ets.html#select/2"><code·class="inline">ets:select/2</code></a>·call·that·does·what·<code·class="inline">ets:foldr</code>·does:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id="2555949836-1">(</span><span·class="ss">emp_tab</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2555949836-2">[</span><span·class="p"·data-group-id="2555949836-3">{</span><span·class="o">#</span><span·class="ss">emp</span[·...·truncated·by·diffoscope;·len:·995,·SHA:·01427ac7ee3b57661069e801f72394acd754d2fac89cfdcb34c8e20a1965a33b·...·]-1">)</span><span·class="p">.</span></code></pre><p>Although·the·record·syntax·is·used,·it·is·still·hard·to·read·and·even·harder·to |
| 182 | write.·The·first·element·of·the·tuple, | 182 | write.·The·first·element·of·the·tuple, |
| 183 | <code·class="inline">#emp{empno·=·'$1',·dept·=·sales,·_='_'}</code>,·tells·what·to·match.·Elements·not | 183 | <code·class="inline">#emp{empno·=·'$1',·dept·=·sales,·_='_'}</code>,·tells·what·to·match.·Elements·not |
| 184 | matching·this·are·not·returned,·as·in·the·<a·href="ets.html#match/2"><code·class="inline">ets:match/2</code></a>·example.·The·second | 184 | matching·this·are·not·returned,·as·in·the·<a·href="ets.html#match/2"><code·class="inline">ets:match/2</code></a>·example.·The·second |
| 185 | element,·the·empty·list,·is·a·list·of·guard·expressions,·which·we·do·not·need. | 185 | element,·the·empty·list,·is·a·list·of·guard·expressions,·which·we·do·not·need. |
| 186 | The·third·element·is·the·list·of·expressions·constructing·the·return·value·(in | 186 | The·third·element·is·the·list·of·expressions·constructing·the·return·value·(in |
| 187 | ETS·this·is·almost·always·a·list·containing·one·single·term).·In·our·case·<code·class="inline">'$1'</code> | 187 | ETS·this·is·almost·always·a·list·containing·one·single·term).·In·our·case·<code·class="inline">'$1'</code> |
| 188 | is·bound·to·the·employee·number·in·the·head·(first·element·of·the·tuple),·and | 188 | is·bound·to·the·employee·number·in·the·head·(first·element·of·the·tuple),·and |
| 189 | hence·the·employee·number·is·returned.·The·result·is·<code·class="inline">["011103","076324"]</code>,·as | 189 | hence·the·employee·number·is·returned.·The·result·is·<code·class="inline">["011103","076324"]</code>,·as |
| 190 | in·the·<a·href="ets.html#foldr/3"><code·class="inline">ets:foldr/3</code></a>·example,·but·the·result·is·retrieved·much·more·efficiently | 190 | in·the·<a·href="ets.html#foldr/3"><code·class="inline">ets:foldr/3</code></a>·example,·but·the·result·is·retrieved·much·more·efficiently |
| 191 | in·terms·of·execution·speed·and·memory·consumption.</p><p>Using·<a·href="ets.html#fun2ms/1"><code·class="inline">ets:fun2ms/1</code></a>,·we·can·combine·the·ease·of·use·of·the·<a·href="ets.html#foldr/3"><code·class="inline">ets:foldr/3</code></a>·and | 191 | in·terms·of·execution·speed·and·memory·consumption.</p><p>Using·<a·href="ets.html#fun2ms/1"><code·class="inline">ets:fun2ms/1</code></a>,·we·can·combine·the·ease·of·use·of·the·<a·href="ets.html#foldr/3"><code·class="inline">ets:foldr/3</code></a>·and |
| 192 | the·efficiency·of·the·pure·<a·href="ets.html#select/2"><code·class="inline">ets:select/2</code></a>·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id=" | 192 | the·efficiency·of·the·pure·<a·href="ets.html#select/2"><code·class="inline">ets:select/2</code></a>·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="1706294245-1">(</span><span·class="s">"stdlib/include/ms_transform.hrl"</span><span·class="p"·data-group-id="1706294245-1">)</span><span·class="p">.</span><span·class="w"> |
| 193 | </span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id=" | 193 | </span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id="1706294245-2">(</span><span·class="ss">emp_tab</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">fun2ms</span><span·class="p"·data-group-id="1706294245-3">(</span><span·class="w"> |
| 194 | ······················</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 194 | ······················</span><span·class="nf">fun</span><span·class="p"·data-group-id="1706294245-4">(</span><span·class="o">#</span><span·class="ss">emp</span><span·class="p"·data-group-id="1706294245-5">{</span><span·class="ss">empno</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">E</span><span[·...·truncated·by·diffoscope;·len:·266,·SHA:·32d9be621c024e3ae35bcdb7c3b0d25ff11a028d2d9f3dbfc33ae4f533356adb·...·]-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 195 | ······························</span><span·class="n">E</span><span·class="w"> | 195 | ······························</span><span·class="n">E</span><span·class="w"> |
| 196 | ······················</span><span·class="k">end</span><span·class="p"·data-group-id=" | 196 | ······················</span><span·class="k">end</span><span·class="p"·data-group-id="1706294245-3">)</span><span·class="p"·data-group-id="1706294245-2">)</span><span·class="p">.</span></code></pre><p>This·example·requires·no·special·knowledge·of·match·specifications·to |
| 197 | understand.·The·head·of·the·fun·matches·what·you·want·to·filter·out·and·the·body | 197 | understand.·The·head·of·the·fun·matches·what·you·want·to·filter·out·and·the·body |
| 198 | returns·what·you·want·returned.·As·long·as·the·fun·can·be·kept·within·the·limits | 198 | returns·what·you·want·returned.·As·long·as·the·fun·can·be·kept·within·the·limits |
| 199 | of·the·match·specifications,·there·is·no·need·to·transfer·all·table·data·to·the | 199 | of·the·match·specifications,·there·is·no·need·to·transfer·all·table·data·to·the |
| 200 | process·for·filtering·as·in·the·<a·href="ets.html#foldr/3"><code·class="inline">ets:foldr/3</code></a>·example.·It·is·easier·to·read·than | 200 | process·for·filtering·as·in·the·<a·href="ets.html#foldr/3"><code·class="inline">ets:foldr/3</code></a>·example.·It·is·easier·to·read·than |
| 201 | the·<a·href="ets.html#foldr/3"><code·class="inline">ets:foldr/3</code></a>·example,·as·the·select·call·in·itself·discards·anything·that | 201 | the·<a·href="ets.html#foldr/3"><code·class="inline">ets:foldr/3</code></a>·example,·as·the·select·call·in·itself·discards·anything·that |
| 202 | does·not·match,·while·the·fun·of·the·<a·href="ets.html#foldr/3"><code·class="inline">ets:foldr/3</code></a>·call·needs·to·handle·both·the | 202 | does·not·match,·while·the·fun·of·the·<a·href="ets.html#foldr/3"><code·class="inline">ets:foldr/3</code></a>·call·needs·to·handle·both·the |
| 203 | elements·matching·and·the·ones·not·matching.</p><p>In·the·<a·href="ets.html#fun2ms/1"><code·class="inline">ets:fun2ms/1</code></a>·example·above,·it·is·needed·to·include·<code·class="inline">ms_transform.hrl</code> | 203 | elements·matching·and·the·ones·not·matching.</p><p>In·the·<a·href="ets.html#fun2ms/1"><code·class="inline">ets:fun2ms/1</code></a>·example·above,·it·is·needed·to·include·<code·class="inline">ms_transform.hrl</code> |
| Offset 212, 90 lines modified | Offset 212, 90 lines modified | ||
| 212 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 212 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 213 | ··</a> | 213 | ··</a> |
| 214 | ··<span·class="text">Example·2</span> | 214 | ··<span·class="text">Example·2</span> |
| 215 | </h2> | 215 | </h2> |
| 216 | <p>Assume·that·we·want·to·get·all·the·employee·numbers·of·employees·hired·before | 216 | <p>Assume·that·we·want·to·get·all·the·employee·numbers·of·employees·hired·before |
| 217 | year·2000.·Using·<a·href="ets.html#match/2"><code·class="inline">ets:match/2</code></a>·is·not·an·alternative·here,·as·relational | 217 | year·2000.·Using·<a·href="ets.html#match/2"><code·class="inline">ets:match/2</code></a>·is·not·an·alternative·here,·as·relational |
| 218 | operators·cannot·be·expressed·there.·Once·again,·<a·href="ets.html#foldr/3"><code·class="inline">ets:foldr/3</code></a>·can·do·it | 218 | operators·cannot·be·expressed·there.·Once·again,·<a·href="ets.html#foldr/3"><code·class="inline">ets:foldr/3</code></a>·can·do·it |
| 219 | (slowly,·but·correct):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">foldr</span><span·class="p"·data-group-id=" | 219 | (slowly,·but·correct):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">foldr</span><span·class="p"·data-group-id="4551978369-1">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="4551978369-2">(</span><span·class="o">#</span><span·class="ss">emp</span><span·class="p"·data-group-id="4551978369-3">{</span><span·class="ss">empno</span><span·class="w">·</sp[·...·truncated·by·diffoscope;·len:·900,·SHA:·b2dbbee4f72be13a8428777c4a774feeb7a89a2cf92fb7e51d1c4d1250f8ef1f·...·]-4">]</span><span·class="p">;</span><span·class="w"> |
| 220 | ··················</span><span·class="p"·data-group-id=" | 220 | ··················</span><span·class="p"·data-group-id="4551978369-5">(</span><span·class="p">_</span><span·class="p">,</span><span·class="n">Acc</span><span·class="p"·data-group-id="4551978369-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Acc</span><span·class="w"> |
| 221 | ··········</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 221 | ··········</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 222 | ··········</span><span·class="p"·data-group-id=" | 222 | ··········</span><span·class="p"·data-group-id="4551978369-6">[</span><span·class="p"·data-group-id="4551978369-6">]</span><span·class="p">,</span><span·class="w"> |
| 223 | ··········</span><span·class="ss">emp_tab</span><span·class="p"·data-group-id=" | 223 | ··········</span><span·class="ss">emp_tab</span><span·class="p"·data-group-id="4551978369-1">)</span><span·class="p">.</span></code></pre><p>The·result·is·<code·class="inline">["052341","076324","535216","789789","989891"]</code>,·as·expected.·The |
| 224 | equivalent·expression·using·a·handwritten·match·specification·would·look·like | 224 | equivalent·expression·using·a·handwritten·match·specification·would·look·like |
| 225 | this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id=" | 225 | this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id="8311973820-1">(</span><span·class="ss">emp_tab</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8311973820-2">[</span><span·class="p"·data-group-id="8311973820-3">{</span><span·class="o">#</span><span·class="ss">emp</spa[·...·truncated·by·diffoscope;·len:·551,·SHA:·a5c6e357ed72c5a174c2e35dfe07c0aa297d89ca1bee05274aa79e78d1aed3ff·...·]-4">}</span><span·class="p">,</span><span·class="w"> |
| 226 | ·····················</span><span·class="p"·data-group-id=" | 226 | ·····················</span><span·class="p"·data-group-id="8311973820-5">[</span><span·class="p"·data-group-id="8311973820-6">{</span><span·class="ss">'<'</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'$2'</span><span·class="p">,</span><span·class="w">·</span><span·class[·...·truncated·by·diffoscope;·len:·111,·SHA:·7d6e8438d9a6863e1e901c1e577763a4958decaba5520663b611530ed8378fd9·...·]-5">]</span><span·class="p">,</span><span·class="w"> |
| 227 | ·····················</span><span·class="p"·data-group-id=" | 227 | ·····················</span><span·class="p"·data-group-id="8311973820-7">[</span><span·class="ss">'$1'</span><span·class="p"·data-group-id="8311973820-7">]</span><span·class="p"·data-group-id="8311973820-3">}</span><span·class="p"·data-group-id="8311973820-2">]</span><span·class="p"·data-group-id="83119738[·...·truncated·by·diffoscope;·len:·2,·SHA:·f5ca38f748a1d6eaf726b8a42fb575c3c71f1864a8143301782de13da2d9202b·...·]-1">)</span><span·class="p">.</span></code></pre><p>This·gives·the·same·result.·<code·class="inline">[{'<',·'$2',·2000}]</code>·is·in·the·guard·part·and |
| 228 | therefore·discards·anything·that·does·not·have·an·<code·class="inline">empyear</code>·(bound·to·<code·class="inline">'$2'</code>·in | 228 | therefore·discards·anything·that·does·not·have·an·<code·class="inline">empyear</code>·(bound·to·<code·class="inline">'$2'</code>·in |
| 229 | the·head)·less·than·2000,·as·the·guard·in·the·<code·class="inline">foldr/3</code>·example.</p><p>We·write·it·using·<a·href="ets.html#fun2ms/1"><code·class="inline">ets:fun2ms/1</code></a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id=" | 229 | the·head)·less·than·2000,·as·the·guard·in·the·<code·class="inline">foldr/3</code>·example.</p><p>We·write·it·using·<a·href="ets.html#fun2ms/1"><code·class="inline">ets:fun2ms/1</code></a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="6059277897-1">(</span><span·class="s">"stdlib/include/ms_transform.hrl"</span><span·class="p"·data-group-id="6059277897-1">)</span><span·class="p">.</span><span·class="w"> |
| 230 | </span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id=" | 230 | </span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id="6059277897-2">(</span><span·class="ss">emp_tab</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">fun2ms</span><span·class="p"·data-group-id="6059277897-3">(</span><span·class="w"> |
| 231 | ······················</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 231 | ······················</span><span·class="nf">fun</span><span·class="p"·data-group-id="6059277897-4">(</span><span·class="o">#</span><span·class="ss">emp</span><span·class="p"·data-group-id="6059277897-5">{</span><span·class="ss">empno</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">E</span><span[·...·truncated·by·diffoscope;·len:·264,·SHA:·41b9e8e2f3966961b03aa6067d76ea03fb83201758ba4d5926091acf8eedfb35·...·]-4">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="n">Y</span><span·class="w">·</span><span·class="o"><</span><span·class="w">·</span><span·class="mi">2000</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 232 | ···························</span><span·class="n">E</span><span·class="w"> | 232 | ···························</span><span·class="n">E</span><span·class="w"> |
| 233 | ······················</span><span·class="k">end</span><span·class="p"·data-group-id=" | 233 | ······················</span><span·class="k">end</span><span·class="p"·data-group-id="6059277897-3">)</span><span·class="p"·data-group-id="6059277897-2">)</span><span·class="p">.</span></code></pre><h2·id="module-example-3"·class="section-heading"> |
| 234 | ··<a·href="#module-example-3"·class="hover-link"> | 234 | ··<a·href="#module-example-3"·class="hover-link"> |
| 235 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 235 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 236 | ··</a> | 236 | ··</a> |
| 237 | ··<span·class="text">Example·3</span> | 237 | ··<span·class="text">Example·3</span> |
| 238 | </h2> | 238 | </h2> |
| 239 | <p>Assume·that·we·want·the·whole·object·matching·instead·of·only·one·element.·One | 239 | <p>Assume·that·we·want·the·whole·object·matching·instead·of·only·one·element.·One |
| 240 | alternative·is·to·assign·a·variable·to·every·part·of·the·record·and·build·it·up | 240 | alternative·is·to·assign·a·variable·to·every·part·of·the·record·and·build·it·up |
| 241 | once·again·in·the·body·of·the·fun,·but·the·following·is·easier:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id=" | 241 | once·again·in·the·body·of·the·fun,·but·the·following·is·easier:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id="7455671384-1">(</span><span·class="ss">emp_tab</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">fun2ms</span><span·class="p"·data-group-id="7455671384-2">(</span><span·class="w"> |
| 242 | ······················</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 242 | ······················</span><span·class="nf">fun</span><span·class="p"·data-group-id="7455671384-3">(</span><span·class="n">Obj</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">emp</span><span·class="p"·data-group-id="7455671384-4">{</span><span·class="ss">empno</span><sp[·...·truncated·by·diffoscope;·len:·362,·SHA:·c6501fed5514a23f56700110a7db2178305db126910dddfe7b2ebc448d5eb87b·...·]-3">)</span><span·class="w"> |
| 243 | ·························</span><span·class="k">when</span><span·class="w">·</span><span·class="n">Y</span><span·class="w">·</span><span·class="o"><</span><span·class="w">·</span><span·class="mi">2000</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 243 | ·························</span><span·class="k">when</span><span·class="w">·</span><span·class="n">Y</span><span·class="w">·</span><span·class="o"><</span><span·class="w">·</span><span·class="mi">2000</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 244 | ······························</span><span·class="n">Obj</span><span·class="w"> | 244 | ······························</span><span·class="n">Obj</span><span·class="w"> |
| 245 | ······················</span><span·class="k">end</span><span·class="p"·data-group-id=" | 245 | ······················</span><span·class="k">end</span><span·class="p"·data-group-id="7455671384-2">)</span><span·class="p"·data-group-id="7455671384-1">)</span><span·class="p">.</span></code></pre><p>As·in·ordinary·Erlang·matching,·you·can·bind·a·variable·to·the·whole·matched |
| 246 | object·using·a·"match·inside·the·match",·that·is,·a·<code·class="inline">=</code>.·Unfortunately·in·funs | 246 | object·using·a·"match·inside·the·match",·that·is,·a·<code·class="inline">=</code>.·Unfortunately·in·funs |
| 247 | translated·to·match·specifications,·it·is·allowed·only·at·the·"top-level",·that | 247 | translated·to·match·specifications,·it·is·allowed·only·at·the·"top-level",·that |
| 248 | is,·matching·the·<em>whole</em>·object·arriving·to·be·matched·into·a·separate·variable. | 248 | is,·matching·the·<em>whole</em>·object·arriving·to·be·matched·into·a·separate·variable. |
| 249 | If·you·are·used·to·writing·match·specifications·by·hand,·we·mention·that | 249 | If·you·are·used·to·writing·match·specifications·by·hand,·we·mention·that |
| 250 | variable·A·is·simply·translated·into·'$_'.·Alternatively,·pseudo·function | 250 | variable·A·is·simply·translated·into·'$_'.·Alternatively,·pseudo·function |
| 251 | <code·class="inline">object/0</code>·also·returns·the·whole·matched·object,·see·section | 251 | <code·class="inline">object/0</code>·also·returns·the·whole·matched·object,·see·section |
| 252 | <a·href="ms_transform.html#warnings_and_restrictions">Warnings·and·Restrictions</a>.</p><h2·id="module-example-4"·class="section-heading"> | 252 | <a·href="ms_transform.html#warnings_and_restrictions">Warnings·and·Restrictions</a>.</p><h2·id="module-example-4"·class="section-heading"> |
| 253 | ··<a·href="#module-example-4"·class="hover-link"> | 253 | ··<a·href="#module-example-4"·class="hover-link"> |
| 254 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 254 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 255 | ··</a> | 255 | ··</a> |
| 256 | ··<span·class="text">Example·4</span> | 256 | ··<span·class="text">Example·4</span> |
| 257 | </h2> | 257 | </h2> |
| 258 | <p>This·example·concerns·the·body·of·the·fun.·Assume·that·all·employee·numbers | 258 | <p>This·example·concerns·the·body·of·the·fun.·Assume·that·all·employee·numbers |
| 259 | beginning·with·zero·(<code·class="inline">0</code>)·must·be·changed·to·begin·with·one·(<code·class="inline">1</code>)·instead,·and | 259 | beginning·with·zero·(<code·class="inline">0</code>)·must·be·changed·to·begin·with·one·(<code·class="inline">1</code>)·instead,·and |
| 260 | that·we·want·to·create·the·list·<code·class="inline">[{<Old·empno>,<New·empno>}]</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id=" | 260 | that·we·want·to·create·the·list·<code·class="inline">[{<Old·empno>,<New·empno>}]</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id="0264542377-1">(</span><span·class="ss">emp_tab</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">fun2ms</span><span·class="p"·data-group-id="0264542377-2">(</span><span·class="w"> |
| 261 | ······················</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 261 | ······················</span><span·class="nf">fun</span><span·class="p"·data-group-id="0264542377-3">(</span><span·class="o">#</span><span·class="ss">emp</span><span·class="p"·data-group-id="0264542377-4">{</span><span·class="ss">empno</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·320,·SHA:·93418970c6589e92d540707ac1b058e98efbda0bf0e9bd8bcc2e10a8261f6ac1·...·]-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 262 | ······························</span><span·class="p"·data-group-id=" | 262 | ······························</span><span·class="p"·data-group-id="0264542377-6">{</span><span·class="p"·data-group-id="0264542377-7">[</span><span·class="sc">$0</span><span·class="p">|</span><span·class="n">Rest</span><span·class="p"·data-group-id="0264542377-7">]</span><span·class="p">,</span><span·class="p"·data-group-[·...·truncated·by·diffoscope;·len:·197,·SHA:·6ba4f8753f2a3894dd4f1bd659f09791060c47e4b68c8013e3900cc494c8ccc1·...·]-6">}</span><span·class="w"> |
| 263 | ······················</span><span·class="k">end</span><span·class="p"·data-group-id=" | 263 | ······················</span><span·class="k">end</span><span·class="p"·data-group-id="0264542377-2">)</span><span·class="p"·data-group-id="0264542377-1">)</span><span·class="p">.</span></code></pre><p>This·query·hits·the·feature·of·partially·bound·keys·in·table·type·<code·class="inline">ordered_set</code>, |
| 264 | so·that·not·the·whole·table·needs·to·be·searched,·only·the·part·containing·keys | 264 | so·that·not·the·whole·table·needs·to·be·searched,·only·the·part·containing·keys |
| 265 | beginning·with·<code·class="inline">0</code>·is·looked·into.</p><h2·id="module-example-5"·class="section-heading"> | 265 | beginning·with·<code·class="inline">0</code>·is·looked·into.</p><h2·id="module-example-5"·class="section-heading"> |
| 266 | ··<a·href="#module-example-5"·class="hover-link"> | 266 | ··<a·href="#module-example-5"·class="hover-link"> |
| 267 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 267 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 268 | ··</a> | 268 | ··</a> |
| 269 | ··<span·class="text">Example·5</span> | 269 | ··<span·class="text">Example·5</span> |
| 270 | </h2> | 270 | </h2> |
| 271 | <p>The·fun·can·have·many·clauses.·Assume·that·we·want·to·do·the·following:</p><ul><li>If·an·employee·started·before·1997,·return·the·tuple | 271 | <p>The·fun·can·have·many·clauses.·Assume·that·we·want·to·do·the·following:</p><ul><li>If·an·employee·started·before·1997,·return·the·tuple |
| 272 | <code·class="inline">{inventory,·<employee·number>}</code>.</li><li>If·an·employee·started·1997·or·later,·but·before·2001,·return | 272 | <code·class="inline">{inventory,·<employee·number>}</code>.</li><li>If·an·employee·started·1997·or·later,·but·before·2001,·return |
| 273 | <code·class="inline">{rookie,·<employee·number>}</code>.</li><li>For·all·other·employees,·return·<code·class="inline">{newbie,·<employee·number>}</code>,·except·for | 273 | <code·class="inline">{rookie,·<employee·number>}</code>.</li><li>For·all·other·employees,·return·<code·class="inline">{newbie,·<employee·number>}</code>,·except·for |
| 274 | those·named·<code·class="inline">Smith</code>·as·they·would·be·affronted·by·anything·other·than·the·tag | 274 | those·named·<code·class="inline">Smith</code>·as·they·would·be·affronted·by·anything·other·than·the·tag |
| 275 | <code·class="inline">guru</code>·and·that·is·also·what·is·returned·for·their·numbers: | 275 | <code·class="inline">guru</code>·and·that·is·also·what·is·returned·for·their·numbers: |
| 276 | <code·class="inline">{guru,·<employee·number>}</code>.</li></ul><p>This·is·accomplished·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id=" | 276 | <code·class="inline">{guru,·<employee·number>}</code>.</li></ul><p>This·is·accomplished·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">select</span><span·class="p"·data-group-id="4582462754-1">(</span><span·class="ss">emp_tab</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">ets</span><span·class="p">:</span><span·class="nf">fun2ms</span><span·class="p"·data-group-id="4582462754-2">(</span><span·class="w"> |
| 277 | ······················</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 277 | ······················</span><span·class="nf">fun</span><span·class="p"·data-group-id="4582462754-3">(</span><span·class="o">#</span><span·class="ss">emp</span><span·class="p"·data-group-id="4582462754-4">{</span><span·class="ss">empno</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">E</span><span[·...·truncated·by·diffoscope;·len:·304,·SHA:·819ba2c91f2a608ded58276e3a304974731d53bfbe3f02a465e28e3bf9b7aa1c·...·]-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 278 | ······························</span><span·class="p"·data-group-id=" | 278 | ······························</span><span·class="p"·data-group-id="4582462754-5">{</span><span·class="ss">guru</span><span·class="p">,</span><span·class="n">E</span><span·class="p"·data-group-id="4582462754-5">}</span><span·class="p">;</span><span·class="w"> |
| 279 | ·························</span><span·class="p"·data-group-id=" | 279 | ·························</span><span·class="p"·data-group-id="4582462754-6">(</span><span·class="o">#</span><span·class="ss">emp</span><span·class="p"·data-group-id="4582462754-7">{</span><span·class="ss">empno</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">E</span><span[·...·truncated·by·diffoscope;·len:·264,·SHA:·77413237e00bd0899910e48262d8498cadf852b53136de21568c3b7c5054141d·...·]-6">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="n">Y</span><span·class="w">·</span><span·class="o"><</span><span·class="w">·</span><span·class="mi">1997</span><span·class="w">··</span><span·class="p">-></span><span·class="w"> |
| 280 | ······························</span><span·class="p"·data-group-id=" | 280 | ······························</span><span·class="p"·data-group-id="4582462754-8">{</span><span·class="ss">inventory</span><span·class="p">,</span><span·class="w">·</span><span·class="n">E</span><span·class="p"·data-group-id="4582462754-8">}</span><span·class="p">;</span><span·class="w"> |
| 281 | ·························</span><span·class="p"·data-group-id=" | 281 | ·························</span><span·class="p"·data-group-id="4582462754-9">(</span><span·class="o">#</span><span·class="ss">emp</span><span·class="p"·data-group-id="4582462754-10">{</span><span·class="ss">empno</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">E</span><spa[·...·truncated·by·diffoscope;·len:·266,·SHA:·d93e29ceb39347439a4e733a56e0e6d4867903a26778d4a2ecb37148ec376b19·...·]-9">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="n">Y</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="mi">2001</span><span·class="w">··</span><span·class="p">-></span><span·class="w"> |
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| 147 | ··<a·href="#fixed-bugs-and-malfunctions-1"·class="hover-link"> | 147 | ··<a·href="#fixed-bugs-and-malfunctions-1"·class="hover-link"> |
| 148 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 148 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 149 | ··</a> | 149 | ··</a> |
| 150 | ··<span·class="text">Fixed·Bugs·and·Malfunctions</span> | 150 | ··<span·class="text">Fixed·Bugs·and·Malfunctions</span> |
| 151 | </h3> | 151 | </h3> |
| 152 | <ul><li><p>Made·it·possible·to·expand·help·text·displayed·by·pressing·^[h·by·pressing·^[h·again.</p><p>Own·Id:·OTP-19260·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8884"·title="">PR-8884</a></p></li><li><p>Defining·a·fun·in·the·shell·using·the·syntax·<code·class="inline">fun·Name/Arity</code>·would·fail.·This·has·been·corrected·so·that·the·following·now·works:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="nb">is_atom</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">.</span><span·class="w"> | 152 | <ul><li><p>Made·it·possible·to·expand·help·text·displayed·by·pressing·^[h·by·pressing·^[h·again.</p><p>Own·Id:·OTP-19260·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8884"·title="">PR-8884</a></p></li><li><p>Defining·a·fun·in·the·shell·using·the·syntax·<code·class="inline">fun·Name/Arity</code>·would·fail.·This·has·been·corrected·so·that·the·following·now·works:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="nb">is_atom</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">.</span><span·class="w"> |
| 153 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="p">.</span><span·class="ss">erl</span><span·class="p">.</span><span·class="mf">42.18682967</span><span·class="o">></span><span·class="gp·unselectable"> | 153 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="p">.</span><span·class="ss">erl</span><span·class="p">.</span><span·class="mf">42.18682967</span><span·class="o">></span><span·class="gp·unselectable"> |
| 154 | >·</span><span·class="n">F</span><span·class="p"·data-group-id=" | 154 | >·</span><span·class="n">F</span><span·class="p"·data-group-id="9046906066-1">(</span><span·class="ss">a</span><span·class="p"·data-group-id="9046906066-1">)</span><span·class="p">.</span><span·class="w"> |
| 155 | </span><span·class="ss">true</span><span·class="gp·unselectable"> | 155 | </span><span·class="ss">true</span><span·class="gp·unselectable"> |
| 156 | 3>·</span><span·class="n">Id</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">id</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">.</span><span·class="w"> | 156 | 3>·</span><span·class="n">Id</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">id</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">.</span><span·class="w"> |
| 157 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="p">.</span><span·class="ss">erl</span><span·class="p">.</span><span·class="mf">42.18682967</span><span·class="o">></span><span·class="gp·unselectable"> | 157 | </span><span·class="p">#</span><span·class="n">Fun</span><span·class="p">.</span><span·class="ss">erl</span><span·class="p">.</span><span·class="mf">42.18682967</span><span·class="o">></span><span·class="gp·unselectable"> |
| 158 | 4>·</span><span·class="n">Id</span><span·class="p"·data-group-id=" | 158 | 4>·</span><span·class="n">Id</span><span·class="p"·data-group-id="9046906066-2">(</span><span·class="mi">42</span><span·class="p"·data-group-id="9046906066-2">)</span><span·class="p">.</span><span·class="w"> |
| 159 | </span><span·class="gt">**·exception·error:·undefined·shell·command·id/1</span><span·class="gp·unselectable"> | 159 | </span><span·class="gt">**·exception·error:·undefined·shell·command·id/1</span><span·class="gp·unselectable"> |
| 160 | 5>·</span><span·class="nf">id</span><span·class="p"·data-group-id=" | 160 | 5>·</span><span·class="nf">id</span><span·class="p"·data-group-id="9046906066-3">(</span><span·class="n">I</span><span·class="p"·data-group-id="9046906066-3">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">I</span><span·class="p">.</span><span·class="w"> |
| 161 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 161 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 162 | 6>·</span><span·class="n">Id</span><span·class="p"·data-group-id=" | 162 | 6>·</span><span·class="n">Id</span><span·class="p"·data-group-id="9046906066-4">(</span><span·class="mi">42</span><span·class="p"·data-group-id="9046906066-4">)</span><span·class="p">.</span><span·class="w"> |
| 163 | </span><span·class="mi">42</span></code></pre><p>The·Debugger·has·also·been·corrected·to·correctly·handle·this·syntax·for·a·BIF.</p><p>Own·Id:·OTP-19322·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8963"·title="">GH-8963</a>,·<a·href="https://github.com/erlang/otp/pull/8987"·title="">PR-8987</a></p></li><li><p>Fixed·a·bug·where·completion·of·'fun('·would·cause·the·shell·to·crash.</p><p>Own·Id:·OTP-19351·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/9043"·title="">PR-9043</a></p></li><li><p>Fixed·a·bug·causing·the·shell·to·crash·while·trying·to·complete·an·expression·starting·with·a·'/'·or·a·variable·followed·by·'('·or·'/'.·E.g.·Foo/·and·Foo(.</p><p>Own·Id:·OTP-19361·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/9078"·title="">PR-9078</a></p></li><li><p><a·href="zip.html#extract/2"><code·class="inline">zip:extract/2</code></a>·with·<code·class="inline">keep_old_files</code>·now·respects·the·<code·class="inline">cwd</code>·option.</p><p>Own·Id:·OTP-19370·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/9097"·title="">PR-9097</a>,·<a·href="https://github.com/erlang/otp/issues/9087"·title="">GH-9087</a></p></li><li><p>Fixed·an·error·in·uri_string:percent_decode·spec</p><p>Own·Id:·OTP-19380·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8755"·title="">GH-8755</a></p></li></ul><h3·id="improvements-and-new-features"·class="section-heading"> | 163 | </span><span·class="mi">42</span></code></pre><p>The·Debugger·has·also·been·corrected·to·correctly·handle·this·syntax·for·a·BIF.</p><p>Own·Id:·OTP-19322·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8963"·title="">GH-8963</a>,·<a·href="https://github.com/erlang/otp/pull/8987"·title="">PR-8987</a></p></li><li><p>Fixed·a·bug·where·completion·of·'fun('·would·cause·the·shell·to·crash.</p><p>Own·Id:·OTP-19351·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/9043"·title="">PR-9043</a></p></li><li><p>Fixed·a·bug·causing·the·shell·to·crash·while·trying·to·complete·an·expression·starting·with·a·'/'·or·a·variable·followed·by·'('·or·'/'.·E.g.·Foo/·and·Foo(.</p><p>Own·Id:·OTP-19361·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/9078"·title="">PR-9078</a></p></li><li><p><a·href="zip.html#extract/2"><code·class="inline">zip:extract/2</code></a>·with·<code·class="inline">keep_old_files</code>·now·respects·the·<code·class="inline">cwd</code>·option.</p><p>Own·Id:·OTP-19370·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/9097"·title="">PR-9097</a>,·<a·href="https://github.com/erlang/otp/issues/9087"·title="">GH-9087</a></p></li><li><p>Fixed·an·error·in·uri_string:percent_decode·spec</p><p>Own·Id:·OTP-19380·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8755"·title="">GH-8755</a></p></li></ul><h3·id="improvements-and-new-features"·class="section-heading"> |
| 164 | ··<a·href="#improvements-and-new-features"·class="hover-link"> | 164 | ··<a·href="#improvements-and-new-features"·class="hover-link"> |
| 165 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 165 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 166 | ··</a> | 166 | ··</a> |
| 167 | ··<span·class="text">Improvements·and·New·Features</span> | 167 | ··<span·class="text">Improvements·and·New·Features</span> |
| 168 | </h3> | 168 | </h3> |
| 169 | <ul><li><p>Updated·shell·docs·to·display·the·type·spec,·that·is,·<code·class="inline">h(erlang,·min,·2)</code>)·now·prints·the·type·spec·and·documentation·in·the·shell.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nf">h</span><span·class="p"·data-group-id="6 | 169 | <ul><li><p>Updated·shell·docs·to·display·the·type·spec,·that·is,·<code·class="inline">h(erlang,·min,·2)</code>)·now·prints·the·type·spec·and·documentation·in·the·shell.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="nf">h</span><span·class="p"·data-group-id="6638065391-1">(</span><span·class="ss">erlang</span><span·class="p">,</span><span·class="ss">min</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="6638065391-1">)</span><span·class="p">.</span><span·class="w"> |
| 170 | </span><span·class="w"> | 170 | </span><span·class="w"> |
| 171 | ··</span><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">min</span><span·class="p"·data-group-id="6 | 171 | ··</span><span·class="p">-</span><span·class="na">spec</span><span·class="w">·</span><span·class="nf">min</span><span·class="p"·data-group-id="6638065391-2">(</span><span·class="n">Term1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Term2</span><span·class="p"·data-group-id="6638065391-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Minimum</span><span·class="w"> |
| 172 | ···············</span><span·class="k">when</span><span·class="w">·</span><span·class="n">Term1</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id="6 | 172 | ···············</span><span·class="k">when</span><span·class="w">·</span><span·class="n">Term1</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">term</span><span·class="p"·data-group-id="6638065391-3">(</span><span·class="p"·data-group-id="6638065391-3">)</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Term2</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·clas[·...·truncated·by·diffoscope;·len:·420,·SHA:·d1ddb5afa8a9dcfd7ff4d5b035443336001c18a6781a2b9f64d0640c72d455c7·...·]-5">)</span><span·class="p">.</span><span·class="w"> |
| 173 | ··</span><span·class="n">Returns</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="ss">smallest</span><span·class="w">·</span><span·class="k">of</span><span·class="w">·</span><span·class="n">Term1</span><span·class="w">·</span><span·class="ow">and</span><span·class="w">·</span><span·class="n">Term2</span><span·class="p">.</span><span·class="w">·</span><span·class="n">If</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="ss">terms</span><span·class="w">·</span><span·class="ss">compare</span><span·class="w">·</span><span·class="ss">equal</span><span·class="w">·</span><span·class="ss">with</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="ss">operator</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Term1</span><span·class="w">·</span><span·class="ss">is</span><span·class="w">·</span><span·class="ss">returned</span><span·class="p">.</span></code></pre><p>Own·Id:·OTP-19234·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8544"·title="">GH-8544</a>,·<a·href="https://github.com/erlang/otp/pull/8833"·title="">PR-8833</a></p></li><li><p>The·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#t:io_device/0"><code·class="inline">file:io_device/0</code></a>·type·has·been·updated·to·clearly·show·the·difference·between·a·<code·class="inline">raw</code>·and·<code·class="inline">cooked</code>·IoDevice.</p><p>Own·Id:·OTP-19301·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8956"·title="">PR-8956</a></p></li><li><p>Added·<a·href="json.html#format_key_value_list/3"><code·class="inline">json:format_key_value_list/3</code></a>·and | 173 | ··</span><span·class="n">Returns</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="ss">smallest</span><span·class="w">·</span><span·class="k">of</span><span·class="w">·</span><span·class="n">Term1</span><span·class="w">·</span><span·class="ow">and</span><span·class="w">·</span><span·class="n">Term2</span><span·class="p">.</span><span·class="w">·</span><span·class="n">If</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="ss">terms</span><span·class="w">·</span><span·class="ss">compare</span><span·class="w">·</span><span·class="ss">equal</span><span·class="w">·</span><span·class="ss">with</span><span·class="w">·</span><span·class="ss">the</span><span·class="w">·</span><span·class="o">==</span><span·class="w">·</span><span·class="ss">operator</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Term1</span><span·class="w">·</span><span·class="ss">is</span><span·class="w">·</span><span·class="ss">returned</span><span·class="p">.</span></code></pre><p>Own·Id:·OTP-19234·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8544"·title="">GH-8544</a>,·<a·href="https://github.com/erlang/otp/pull/8833"·title="">PR-8833</a></p></li><li><p>The·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#t:io_device/0"><code·class="inline">file:io_device/0</code></a>·type·has·been·updated·to·clearly·show·the·difference·between·a·<code·class="inline">raw</code>·and·<code·class="inline">cooked</code>·IoDevice.</p><p>Own·Id:·OTP-19301·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8956"·title="">PR-8956</a></p></li><li><p>Added·<a·href="json.html#format_key_value_list/3"><code·class="inline">json:format_key_value_list/3</code></a>·and |
| 174 | <a·href="json.html#format_key_value_list_checked/3"><code·class="inline">json:format_key_value_list_checked/3</code></a>.</p><p>Own·Id:·OTP-19320·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8889"·title="">PR-8889</a></p></li><li><p>Improved·documentation·of·<a·href="../../../../erts-15.2.3/doc/html/time_correction.html#timers">timers</a>.</p><p>Own·Id:·OTP-19360·Aux·Id:·ERIERL-1149,·<a·href="https://github.com/erlang/otp/pull/9062"·title="">PR-9062</a></p></li><li><p>Added·logging·support·to·<a·href="io.html#t:user/0"><code·class="inline">io:user/0</code></a>,·<a·href="io.html#t:standard_io/0"><code·class="inline">io:standard_io/0</code></a>·and·<a·href="io.html#t:standard_error/0"><code·class="inline">io:standard_error/0</code></a>.·See·<a·href="io.html#setopts/2"><code·class="inline">io:setopts/2</code></a>·for·more·details.</p><p>Own·Id:·OTP-19372·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8947"·title="">PR-8947</a></p></li></ul><h2·id="stdlib-6-1-2"·class="section-heading"> | 174 | <a·href="json.html#format_key_value_list_checked/3"><code·class="inline">json:format_key_value_list_checked/3</code></a>.</p><p>Own·Id:·OTP-19320·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8889"·title="">PR-8889</a></p></li><li><p>Improved·documentation·of·<a·href="../../../../erts-15.2.3/doc/html/time_correction.html#timers">timers</a>.</p><p>Own·Id:·OTP-19360·Aux·Id:·ERIERL-1149,·<a·href="https://github.com/erlang/otp/pull/9062"·title="">PR-9062</a></p></li><li><p>Added·logging·support·to·<a·href="io.html#t:user/0"><code·class="inline">io:user/0</code></a>,·<a·href="io.html#t:standard_io/0"><code·class="inline">io:standard_io/0</code></a>·and·<a·href="io.html#t:standard_error/0"><code·class="inline">io:standard_error/0</code></a>.·See·<a·href="io.html#setopts/2"><code·class="inline">io:setopts/2</code></a>·for·more·details.</p><p>Own·Id:·OTP-19372·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8947"·title="">PR-8947</a></p></li></ul><h2·id="stdlib-6-1-2"·class="section-heading"> |
| 175 | ··<a·href="#stdlib-6-1-2"·class="hover-link"> | 175 | ··<a·href="#stdlib-6-1-2"·class="hover-link"> |
| 176 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 176 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 177 | ··</a> | 177 | ··</a> |
| 178 | ··<span·class="text">STDLIB·6.1.2</span> | 178 | ··<span·class="text">STDLIB·6.1.2</span> |
| Offset 245, 16 lines modified | Offset 245, 16 lines modified | ||
| 245 | <a·href="binary.html#split/2"><code·class="inline">binary:split/2,3</code></a></p><p>The·call·<code·class="inline">binary:copy(<<1:1>>,·0)</code>·would·return·an·empty·binary·instead·of·raising·an·exception.·Similarly,·calls·to·<a·href="binary.html#part/2"><code·class="inline">binary:part/2,3</code></a>·attempting·to·extract·0·bytes·at·position·0·of·a·bitstring·would·return·an·empty·binary·instead·of·raising·an·exception.</p><p>Own·Id:·OTP-18743·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7607"·title="">PR-7607</a>,·<a·href="https://github.com/erlang/otp/pull/7628"·title="">PR-7628</a></p></li><li><p>The·documentation·for·the·preprocessor·now·mentions·that·<code·class="inline">defined(Name)</code>·can·be·called·in·the·condition·for·an·<code·class="inline">-if</code>·or·<code·class="inline">-elif</code>·directive·to·test·whether·<code·class="inline">Name</code>·is·the·name·of·a·defined·macro.·(This·feature·was·implemented·in·OTP·21.)</p><p>If·a·function·call·in·an·<code·class="inline">-if</code>·or·<code·class="inline">-elif</code>·with·a·name·that·is·not·the·name·of·a·guard·BIF,·there·would·not·be·a·compilation·error,·but·would·instead·cause·the·lines·following·the·directive·to·be·skipped.·This·has·now·been·changed·to·be·a·compilation·error.</p><p><strong><em>·POTENTIAL·INCOMPATIBILITY·</em></strong></p><p>Own·Id:·OTP-18784·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/7706"·title="">GH-7706</a>,·<a·href="https://github.com/erlang/otp/pull/7726"·title="">PR-7726</a></p></li><li><p><code·class="inline">get_until</code>·requests·using·the·I/O·protocol·now·correctly·return·a·binary·or·list·when·<code·class="inline">eof</code>·is·the·last·item·returned·by·the·callback.</p><p>Own·Id:·OTP-18930·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7993"·title="">PR-7993</a>,·<a·href="https://github.com/erlang/otp/issues/4992"·title="">GH-4992</a></p></li><li><p>The·error·handling·the·<code·class="inline">simple_one_for_one</code>·supervisor·has·been·enhanced.·A·transient·child·returning·<code·class="inline">ignore</code>·will·no·longer·cause·a·crash.</p><p>Also,·automatic·shutdown·has·been·disabled·because·it·does·not·make·sense·for·this·supervisor·type.·That·is·was·allowed·is·considered·a·bug.·Therefore,·we·don't·consider·this·an·incompatible·change.</p><p><strong><em>·POTENTIAL·INCOMPATIBILITY·</em></strong></p><p>Own·Id:·OTP-19029·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8230"·title="">PR-8230</a></p></li><li><p>Fix·shell·expansion·to·not·crash·when·expanding·a·map·with·non-atom·keys·and·to·not·list·zero·arity·functions·when·an·argument·has·been·given.</p><p>Own·Id:·OTP-19073·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8375"·title="">PR-8375</a>,·<a·href="https://github.com/erlang/otp/issues/8366"·title="">GH-8366</a>,·<a·href="https://github.com/erlang/otp/issues/8365"·title="">GH-8365</a>,·<a·href="https://github.com/erlang/otp/issues/8364"·title="">GH-8364</a></p></li></ul><h3·id="improvements-and-new-features-2"·class="section-heading"> | 245 | <a·href="binary.html#split/2"><code·class="inline">binary:split/2,3</code></a></p><p>The·call·<code·class="inline">binary:copy(<<1:1>>,·0)</code>·would·return·an·empty·binary·instead·of·raising·an·exception.·Similarly,·calls·to·<a·href="binary.html#part/2"><code·class="inline">binary:part/2,3</code></a>·attempting·to·extract·0·bytes·at·position·0·of·a·bitstring·would·return·an·empty·binary·instead·of·raising·an·exception.</p><p>Own·Id:·OTP-18743·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7607"·title="">PR-7607</a>,·<a·href="https://github.com/erlang/otp/pull/7628"·title="">PR-7628</a></p></li><li><p>The·documentation·for·the·preprocessor·now·mentions·that·<code·class="inline">defined(Name)</code>·can·be·called·in·the·condition·for·an·<code·class="inline">-if</code>·or·<code·class="inline">-elif</code>·directive·to·test·whether·<code·class="inline">Name</code>·is·the·name·of·a·defined·macro.·(This·feature·was·implemented·in·OTP·21.)</p><p>If·a·function·call·in·an·<code·class="inline">-if</code>·or·<code·class="inline">-elif</code>·with·a·name·that·is·not·the·name·of·a·guard·BIF,·there·would·not·be·a·compilation·error,·but·would·instead·cause·the·lines·following·the·directive·to·be·skipped.·This·has·now·been·changed·to·be·a·compilation·error.</p><p><strong><em>·POTENTIAL·INCOMPATIBILITY·</em></strong></p><p>Own·Id:·OTP-18784·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/7706"·title="">GH-7706</a>,·<a·href="https://github.com/erlang/otp/pull/7726"·title="">PR-7726</a></p></li><li><p><code·class="inline">get_until</code>·requests·using·the·I/O·protocol·now·correctly·return·a·binary·or·list·when·<code·class="inline">eof</code>·is·the·last·item·returned·by·the·callback.</p><p>Own·Id:·OTP-18930·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7993"·title="">PR-7993</a>,·<a·href="https://github.com/erlang/otp/issues/4992"·title="">GH-4992</a></p></li><li><p>The·error·handling·the·<code·class="inline">simple_one_for_one</code>·supervisor·has·been·enhanced.·A·transient·child·returning·<code·class="inline">ignore</code>·will·no·longer·cause·a·crash.</p><p>Also,·automatic·shutdown·has·been·disabled·because·it·does·not·make·sense·for·this·supervisor·type.·That·is·was·allowed·is·considered·a·bug.·Therefore,·we·don't·consider·this·an·incompatible·change.</p><p><strong><em>·POTENTIAL·INCOMPATIBILITY·</em></strong></p><p>Own·Id:·OTP-19029·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8230"·title="">PR-8230</a></p></li><li><p>Fix·shell·expansion·to·not·crash·when·expanding·a·map·with·non-atom·keys·and·to·not·list·zero·arity·functions·when·an·argument·has·been·given.</p><p>Own·Id:·OTP-19073·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8375"·title="">PR-8375</a>,·<a·href="https://github.com/erlang/otp/issues/8366"·title="">GH-8366</a>,·<a·href="https://github.com/erlang/otp/issues/8365"·title="">GH-8365</a>,·<a·href="https://github.com/erlang/otp/issues/8364"·title="">GH-8364</a></p></li></ul><h3·id="improvements-and-new-features-2"·class="section-heading"> |
| 246 | ··<a·href="#improvements-and-new-features-2"·class="hover-link"> | 246 | ··<a·href="#improvements-and-new-features-2"·class="hover-link"> |
| 247 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 247 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 248 | ··</a> | 248 | ··</a> |
| 249 | ··<span·class="text">Improvements·and·New·Features</span> | 249 | ··<span·class="text">Improvements·and·New·Features</span> |
| 250 | </h3> | 250 | </h3> |
| 251 | <ul><li><p>The·functions·<a·href="sets.html#is_equal/2"><code·class="inline">is_equal/2</code></a>,·<a·href="sets.html#map/2"><code·class="inline">map/2</code></a>,·and·<a·href="sets.html#filtermap/2"><code·class="inline">filtermap/2</code></a>·have·been·added·to·the·modules·<a·href="sets.html"><code·class="inline">sets</code></a>,·<a·href="ordsets.html"><code·class="inline">ordsets</code></a>,·and·<a·href="gb_sets.html"><code·class="inline">gb_sets</code></a>.</p><p>Own·Id:·OTP-18622·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7183"·title="">PR-7183</a>,·<a·href="https://github.com/erlang/otp/pull/7232"·title="">PR-7232</a></p></li><li><p>The·compiler·now·emits·nicer·error·message·for·function·head·mismatches. | 251 | <ul><li><p>The·functions·<a·href="sets.html#is_equal/2"><code·class="inline">is_equal/2</code></a>,·<a·href="sets.html#map/2"><code·class="inline">map/2</code></a>,·and·<a·href="sets.html#filtermap/2"><code·class="inline">filtermap/2</code></a>·have·been·added·to·the·modules·<a·href="sets.html"><code·class="inline">sets</code></a>,·<a·href="ordsets.html"><code·class="inline">ordsets</code></a>,·and·<a·href="gb_sets.html"><code·class="inline">gb_sets</code></a>.</p><p>Own·Id:·OTP-18622·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7183"·title="">PR-7183</a>,·<a·href="https://github.com/erlang/otp/pull/7232"·title="">PR-7232</a></p></li><li><p>The·compiler·now·emits·nicer·error·message·for·function·head·mismatches. |
| 252 | For·example,·given:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">a</span><span·class="p"·data-group-id="07 | 252 | For·example,·given:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">a</span><span·class="p"·data-group-id="9607161999-1">(</span><span·class="p"·data-group-id="9607161999-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> |
| 253 | </span><span·class="nf">a</span><span·class="p"·data-group-id="07 | 253 | </span><span·class="nf">a</span><span·class="p"·data-group-id="9607161999-2">(</span><span·class="p">_</span><span·class="p"·data-group-id="9607161999-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">error</span><span·class="p">.</span></code></pre><p>Erlang/OTP·26·and·earlier·would·emit·a·diagnostic·similar·to:</p><pre><code·class="text">t.erl:6:1:·head·mismatch |
| 254 | %····6|·a(_)·->·error. | 254 | %····6|·a(_)·->·error. |
| 255 | %·····|·^</code></pre><p>while·in·Erlang/OTP·27·the·diagnostic·is·similar·to:</p><pre><code·class="text">t.erl:6:1:·head·mismatch:·function·a·with·arities·0·and·1·is·regarded·as·two·distinct·functions.·Is·the·number·of·arguments·incorrect·or·is·the·semicolon·in·a/0·unwanted? | 255 | %·····|·^</code></pre><p>while·in·Erlang/OTP·27·the·diagnostic·is·similar·to:</p><pre><code·class="text">t.erl:6:1:·head·mismatch:·function·a·with·arities·0·and·1·is·regarded·as·two·distinct·functions.·Is·the·number·of·arguments·incorrect·or·is·the·semicolon·in·a/0·unwanted? |
| 256 | %····6|·a(_)·->·error. | 256 | %····6|·a(_)·->·error. |
| 257 | %·····|·^</code></pre><p>Own·Id:·OTP-18648·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7383"·title="">PR-7383</a></p></li><li><p><a·href="zip.html#create/2"><code·class="inline">zip:create/2,3</code></a>·will·now·tolerate·POSIX·timestamps·in·the·provided·<code·class="inline">file_info</code>·records.</p><p>Own·Id:·OTP-18668</p></li><li><p>The·callback·function·<a·href="gen_statem.html#c:handle_event/4"><code·class="inline">gen_statem:handle_event/4</code></a>·has·been·cached·in·the·<code·class="inline">gen_statem</code>·engine·to·optimize·callback·call·speed.</p><p>Own·Id:·OTP-18671·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7419"·title="">PR-7419</a></p></li><li><p>The·type·<code·class="inline">beam_lib:beam/0</code>·is·now·exported.</p><p>Own·Id:·OTP-18716·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7534"·title="">PR-7534</a></p></li><li><p>The·documentation·for·the·<a·href="binary.html"><code·class="inline">binary</code></a>·module·has·been·improved.</p><p>Own·Id:·OTP-18741·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7585"·title="">PR-7585</a></p></li><li><p><a·href="binary.html#replace/3"><code·class="inline">binary:replace/3,4</code></a>·now·supports·using·a·fun·for·supplying·the·replacement·binary.</p><p>Own·Id:·OTP-18742·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7590"·title="">PR-7590</a></p></li><li><p>Triple-Quoted·Strings·has·been·implemented·as·per·<a·href="https://www.erlang.org/eeps/eep-0064">EEP·64</a>.·See·<a·href="../../../../doc/system/data_types.html#string">String</a>·in·the·Reference·Manual.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="s">""</span><span·class="s">" | 257 | %·····|·^</code></pre><p>Own·Id:·OTP-18648·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7383"·title="">PR-7383</a></p></li><li><p><a·href="zip.html#create/2"><code·class="inline">zip:create/2,3</code></a>·will·now·tolerate·POSIX·timestamps·in·the·provided·<code·class="inline">file_info</code>·records.</p><p>Own·Id:·OTP-18668</p></li><li><p>The·callback·function·<a·href="gen_statem.html#c:handle_event/4"><code·class="inline">gen_statem:handle_event/4</code></a>·has·been·cached·in·the·<code·class="inline">gen_statem</code>·engine·to·optimize·callback·call·speed.</p><p>Own·Id:·OTP-18671·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7419"·title="">PR-7419</a></p></li><li><p>The·type·<code·class="inline">beam_lib:beam/0</code>·is·now·exported.</p><p>Own·Id:·OTP-18716·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7534"·title="">PR-7534</a></p></li><li><p>The·documentation·for·the·<a·href="binary.html"><code·class="inline">binary</code></a>·module·has·been·improved.</p><p>Own·Id:·OTP-18741·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7585"·title="">PR-7585</a></p></li><li><p><a·href="binary.html#replace/3"><code·class="inline">binary:replace/3,4</code></a>·now·supports·using·a·fun·for·supplying·the·replacement·binary.</p><p>Own·Id:·OTP-18742·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7590"·title="">PR-7590</a></p></li><li><p>Triple-Quoted·Strings·has·been·implemented·as·per·<a·href="https://www.erlang.org/eeps/eep-0064">EEP·64</a>.·See·<a·href="../../../../doc/system/data_types.html#string">String</a>·in·the·Reference·Manual.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="s">""</span><span·class="s">" |
| 258 | ···a | 258 | ···a |
| 259 | ···b | 259 | ···b |
| 260 | ···c | 260 | ···c |
| Offset 269, 30 lines modified | Offset 269, 30 lines modified | ||
| 269 | ····. | 269 | ····. |
| 270 | ····. | 270 | ····. |
| 271 | ····. | 271 | ····. |
| 272 | <0.90.0>··············erlang:apply/2························2586····75011····0 | 272 | <0.90.0>··············erlang:apply/2························2586····75011····0 |
| 273 | my_label··············c:pinfo/2·······························51 | 273 | my_label··············c:pinfo/2·······························51 |
| 274 | 4>·proc_lib:get_label(self()). | 274 | 4>·proc_lib:get_label(self()). |
| 275 | my_label</code></pre><p>Own·Id:·OTP-18789·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7720"·title="">PR-7720</a>,·<a·href="https://github.com/erlang/otp/pull/8003"·title="">PR-8003</a></p></li><li><p><code·class="inline">-callback</code>·attributes·has·been·added·to·modules·<a·href="sys.html"><code·class="inline">sys</code></a>·and·<a·href="erl_error.html"><code·class="inline">erl_error</code></a>.</p><p>Own·Id:·OTP-18793·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7703"·title="">PR-7703</a></p></li><li><p>Several·new·functions·that·accept·funs·have·been·added·to·module·<a·href="timer.html"><code·class="inline">timer</code></a>.</p><p>Functions·<a·href="timer.html#apply_after/2"><code·class="inline">apply_after/2</code></a>,·<a·href="timer.html#apply_interval/2"><code·class="inline">apply_interval/2</code></a>,·and·<code·class="inline">apply_repeatedly/2</code>·accept·a·nullary·fun·as·the·second·argument,·while··functions·<a·href="timer.html#apply_after/3"><code·class="inline">apply_after/3</code></a>,·<a·href="timer.html#apply_interval/3"><code·class="inline">apply_interval/3</code></a>,·and·<code·class="inline">apply_repeatedly/3</code>·accept·an·n-ary·fun·as·the·second·and·a·list·of·n·arguments·for·the·fun·as·the·third·argument.</p><p>Own·Id:·OTP-18808·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7649"·title="">PR-7649</a></p></li><li><p>Sigils·on·string·literals·have·been·implemented·as·per·<a·href="https://www.erlang.org/eeps/eep-0066">EEP·66</a>,·that·is:·binary·and·string·sigils·in·verbatim·and·escape·characters·variants,·as·well·as·a·default·(vanilla)·Sigil.··All·for·ordinary·strings·and·for·triple-quoted·strings·(EEP·64).·See·<a·href="../../../../doc/system/data_types.html#sigil">Sigils·in·the·Reference·Manual</a>.</p><p>Examples:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="s">~"Björn"</span><span·class="p">.</span><span·class="w"> | 275 | my_label</code></pre><p>Own·Id:·OTP-18789·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7720"·title="">PR-7720</a>,·<a·href="https://github.com/erlang/otp/pull/8003"·title="">PR-8003</a></p></li><li><p><code·class="inline">-callback</code>·attributes·has·been·added·to·modules·<a·href="sys.html"><code·class="inline">sys</code></a>·and·<a·href="erl_error.html"><code·class="inline">erl_error</code></a>.</p><p>Own·Id:·OTP-18793·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7703"·title="">PR-7703</a></p></li><li><p>Several·new·functions·that·accept·funs·have·been·added·to·module·<a·href="timer.html"><code·class="inline">timer</code></a>.</p><p>Functions·<a·href="timer.html#apply_after/2"><code·class="inline">apply_after/2</code></a>,·<a·href="timer.html#apply_interval/2"><code·class="inline">apply_interval/2</code></a>,·and·<code·class="inline">apply_repeatedly/2</code>·accept·a·nullary·fun·as·the·second·argument,·while··functions·<a·href="timer.html#apply_after/3"><code·class="inline">apply_after/3</code></a>,·<a·href="timer.html#apply_interval/3"><code·class="inline">apply_interval/3</code></a>,·and·<code·class="inline">apply_repeatedly/3</code>·accept·an·n-ary·fun·as·the·second·and·a·list·of·n·arguments·for·the·fun·as·the·third·argument.</p><p>Own·Id:·OTP-18808·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7649"·title="">PR-7649</a></p></li><li><p>Sigils·on·string·literals·have·been·implemented·as·per·<a·href="https://www.erlang.org/eeps/eep-0066">EEP·66</a>,·that·is:·binary·and·string·sigils·in·verbatim·and·escape·characters·variants,·as·well·as·a·default·(vanilla)·Sigil.··All·for·ordinary·strings·and·for·triple-quoted·strings·(EEP·64).·See·<a·href="../../../../doc/system/data_types.html#sigil">Sigils·in·the·Reference·Manual</a>.</p><p>Examples:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="s">~"Björn"</span><span·class="p">.</span><span·class="w"> |
| 276 | </span><span·class="p"·data-group-id=" | 276 | </span><span·class="p"·data-group-id="8144695385-1"><<</span><span·class="s">"Björn"</span><span·class="o">/</span><span·class="ss">utf8</span><span·class="p"·data-group-id="8144695385-1">>></span><span·class="gp·unselectable"> |
| 277 | 2>·</span><span·class="s">~b"Björn"</span><span·class="p">.</span><span·class="w"> | 277 | 2>·</span><span·class="s">~b"Björn"</span><span·class="p">.</span><span·class="w"> |
| 278 | </span><span·class="p"·data-group-id=" | 278 | </span><span·class="p"·data-group-id="8144695385-2"><<</span><span·class="s">"Björn"</span><span·class="o">/</span><span·class="ss">utf8</span><span·class="p"·data-group-id="8144695385-2">>></span><span·class="gp·unselectable"> |
| 279 | 3>·</span><span·class="s">~S"\s*(\w+)"</span><span·class="p">.</span><span·class="w"> | 279 | 3>·</span><span·class="s">~S"\s*(\w+)"</span><span·class="p">.</span><span·class="w"> |
| 280 | </span><span·class="s">"\\s*(\\w+)"</span><span·class="gp·unselectable"> | 280 | </span><span·class="s">"\\s*(\\w+)"</span><span·class="gp·unselectable"> |
| 281 | 4>·</span><span·class="s">~B"\s*(\w+)"</span><span·class="p">.</span><span·class="w"> | 281 | 4>·</span><span·class="s">~B"\s*(\w+)"</span><span·class="p">.</span><span·class="w"> |
| 282 | </span><span·class="p"·data-group-id=" | 282 | </span><span·class="p"·data-group-id="8144695385-3"><<</span><span·class="s">"\\s*(\\w+)"</span><span·class="p"·data-group-id="8144695385-3">>></span></code></pre><p>Own·Id:·OTP-18825·Aux·Id:·OTP-18750,·<a·href="https://github.com/erlang/otp/pull/7684"·title="">PR-7684</a></p></li><li><p>Functions·<a·href="shell.html#default_multiline_prompt/1"><code·class="inline">shell:default_multiline_prompt/1</code></a>,·<a·href="shell.html#inverted_space_prompt/1"><code·class="inline">shell:inverted_space_prompt/1</code></a>,·and· |
| 283 | <a·href="shell.html#prompt_width/1"><code·class="inline">shell:prompt_width/1</code></a>·have·been·exported·to·help·with·custom·prompt·implementations.</p><p>Own·Id:·OTP-18834·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7675"·title="">PR-7675</a>,·<a·href="https://github.com/erlang/otp/pull/7816"·title="">PR-7816</a></p></li><li><p>The·shell·now·pages·long·output·from·the·documentation·help·command·(<code·class="inline">h(Module)</code>),·auto·completions·and·the·search·command.</p><p>Own·Id:·OTP-18846·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7845"·title="">PR-7845</a></p></li><li><p>The·<code·class="inline">M-h</code>·hotkey·(Alt/Option-h)·now·outputs·help·for·the·module·or·function·directly·before·the·cursor.</p><p>Own·Id:·OTP-18847·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7846"·title="">PR-7846</a></p></li><li><p>Added·support·for·adding·a·custom·code·formatter·that·formats·your·multi-line·shell·commands·in·your·preferred·formatting·on·submission.·See·<code·class="inline">shell:format_shell_func/</code>·and·<a·href="shell.html#erl_pp_format_func/1"><code·class="inline">shell:erl_pp_format_func/1</code></a>.</p><p>Own·Id:·OTP-18848·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7847"·title="">PR-7847</a></p></li><li><p>Added·shell·functions·for·viewing,·forgetting·and·saving·locally·defined·functions,·types·and·records.</p><p>Own·Id:·OTP-18852·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7844"·title="">PR-7844</a></p></li><li><p>Added·<a·href="string.html#jaro_similarity/2"><code·class="inline">string:jaro_similarity/2</code></a>,·which·can·be·used·to·calculate·the·similarity·between·two·strings.</p><p>Own·Id:·OTP-18865·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7879"·title="">PR-7879</a></p></li><li><p>The·new·function·<a·href="ets.html#update_element/4"><code·class="inline">ets:update_element/4</code></a>·is·similar·to·<a·href="ets.html#update_element/3"><code·class="inline">ets:update_element/3</code></a>,·but·takes·a·default·tuple·as·the·fourth·argument,·which·will·be·inserted·if·no·previous·record·with·that·key·exists.</p><p>Own·Id:·OTP-18870·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7857"·title="">PR-7857</a></p></li><li><p>Added·functions·to·retrieve·the·next·higher·or·lower·key/element·from·<a·href="gb_trees.html"><code·class="inline">gb_trees</code></a>·and·<a·href="gb_sets.html"><code·class="inline">gb_sets</code></a>,·as·well·as·returning·iterators·that·start·at·given·keys/elements.</p><p>Own·Id:·OTP-18874·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7745"·title="">PR-7745</a></p></li><li><p>When·the·shell·built-in·function·<a·href="c.html#c/1"·title=""><code·class="inline">c/1,2</code></a>·is·used·to·re-compile·a·module,·the·current·working·directory·of·the·original·compilation·is·now·added·to·the·include·path.</p><p>Own·Id:·OTP-18908·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7957"·title="">PR-7957</a></p></li><li><p>The·<code·class="inline">timer</code>·module·now·uses·a·private·table·for·its·internal·state,·slightly·improving·its·performance.</p><p>Own·Id:·OTP-18914·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7973"·title="">PR-7973</a></p></li><li><p><a·href="https://www.erlang.org/eeps/eep-0059">EEP-59·-·Documentation·Attributes</a>·has·been·implemented.</p><p>Documentation·attributes·can·be·used·to·document·functions,·types,·callbacks,·and·modules. | 283 | <a·href="shell.html#prompt_width/1"><code·class="inline">shell:prompt_width/1</code></a>·have·been·exported·to·help·with·custom·prompt·implementations.</p><p>Own·Id:·OTP-18834·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7675"·title="">PR-7675</a>,·<a·href="https://github.com/erlang/otp/pull/7816"·title="">PR-7816</a></p></li><li><p>The·shell·now·pages·long·output·from·the·documentation·help·command·(<code·class="inline">h(Module)</code>),·auto·completions·and·the·search·command.</p><p>Own·Id:·OTP-18846·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7845"·title="">PR-7845</a></p></li><li><p>The·<code·class="inline">M-h</code>·hotkey·(Alt/Option-h)·now·outputs·help·for·the·module·or·function·directly·before·the·cursor.</p><p>Own·Id:·OTP-18847·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7846"·title="">PR-7846</a></p></li><li><p>Added·support·for·adding·a·custom·code·formatter·that·formats·your·multi-line·shell·commands·in·your·preferred·formatting·on·submission.·See·<code·class="inline">shell:format_shell_func/</code>·and·<a·href="shell.html#erl_pp_format_func/1"><code·class="inline">shell:erl_pp_format_func/1</code></a>.</p><p>Own·Id:·OTP-18848·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7847"·title="">PR-7847</a></p></li><li><p>Added·shell·functions·for·viewing,·forgetting·and·saving·locally·defined·functions,·types·and·records.</p><p>Own·Id:·OTP-18852·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7844"·title="">PR-7844</a></p></li><li><p>Added·<a·href="string.html#jaro_similarity/2"><code·class="inline">string:jaro_similarity/2</code></a>,·which·can·be·used·to·calculate·the·similarity·between·two·strings.</p><p>Own·Id:·OTP-18865·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7879"·title="">PR-7879</a></p></li><li><p>The·new·function·<a·href="ets.html#update_element/4"><code·class="inline">ets:update_element/4</code></a>·is·similar·to·<a·href="ets.html#update_element/3"><code·class="inline">ets:update_element/3</code></a>,·but·takes·a·default·tuple·as·the·fourth·argument,·which·will·be·inserted·if·no·previous·record·with·that·key·exists.</p><p>Own·Id:·OTP-18870·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7857"·title="">PR-7857</a></p></li><li><p>Added·functions·to·retrieve·the·next·higher·or·lower·key/element·from·<a·href="gb_trees.html"><code·class="inline">gb_trees</code></a>·and·<a·href="gb_sets.html"><code·class="inline">gb_sets</code></a>,·as·well·as·returning·iterators·that·start·at·given·keys/elements.</p><p>Own·Id:·OTP-18874·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7745"·title="">PR-7745</a></p></li><li><p>When·the·shell·built-in·function·<a·href="c.html#c/1"·title=""><code·class="inline">c/1,2</code></a>·is·used·to·re-compile·a·module,·the·current·working·directory·of·the·original·compilation·is·now·added·to·the·include·path.</p><p>Own·Id:·OTP-18908·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7957"·title="">PR-7957</a></p></li><li><p>The·<code·class="inline">timer</code>·module·now·uses·a·private·table·for·its·internal·state,·slightly·improving·its·performance.</p><p>Own·Id:·OTP-18914·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7973"·title="">PR-7973</a></p></li><li><p><a·href="https://www.erlang.org/eeps/eep-0059">EEP-59·-·Documentation·Attributes</a>·has·been·implemented.</p><p>Documentation·attributes·can·be·used·to·document·functions,·types,·callbacks,·and·modules. |
| 284 | The·keyword·<code·class="inline">-moduledoc·"Documentation·here".</code>·is·used·to·document·modules,·while·<code·class="inline">-doc·"Documentation·here".</code>·can·be·used·on·top·of·functions,·types,·and·callbacks·to·document·them,·respectively.</p><ul><li><p>Types,·callbacks,·and·function·documentation·can·be·set·to·<code·class="inline">hidden</code>·either·via·<code·class="inline">-doc·false</code>·or·<code·class="inline">-doc·hidden</code>.·When·documentation·attributes·mark·a·type·as·hidden,·they·will·not·be·part·of·the·documentation.</p></li><li><p>The·documentation·from·<code·class="inline">moduledoc</code>·and·<code·class="inline">doc</code>·gets·added·by·default·to·the·binary·beam·file,·following·the·format·of·<a·href="https://www.erlang.org/eeps/eep-0048">EEP-48</a>.</p></li><li><p>Using·the·compiler·flag·<code·class="inline">warn_missing_doc</code>·will·raise·a·warning·when | 284 | The·keyword·<code·class="inline">-moduledoc·"Documentation·here".</code>·is·used·to·document·modules,·while·<code·class="inline">-doc·"Documentation·here".</code>·can·be·used·on·top·of·functions,·types,·and·callbacks·to·document·them,·respectively.</p><ul><li><p>Types,·callbacks,·and·function·documentation·can·be·set·to·<code·class="inline">hidden</code>·either·via·<code·class="inline">-doc·false</code>·or·<code·class="inline">-doc·hidden</code>.·When·documentation·attributes·mark·a·type·as·hidden,·they·will·not·be·part·of·the·documentation.</p></li><li><p>The·documentation·from·<code·class="inline">moduledoc</code>·and·<code·class="inline">doc</code>·gets·added·by·default·to·the·binary·beam·file,·following·the·format·of·<a·href="https://www.erlang.org/eeps/eep-0048">EEP-48</a>.</p></li><li><p>Using·the·compiler·flag·<code·class="inline">warn_missing_doc</code>·will·raise·a·warning·when |
| 285 | <code·class="inline">-doc</code>·attributes·are·missing·in·exported·functions,·types,·and·callbacks.</p></li><li><p>Using·the·compiler·flag·<code·class="inline">warn_missing_spec_documented</code>·will·raise·a·warning·when | 285 | <code·class="inline">-doc</code>·attributes·are·missing·in·exported·functions,·types,·and·callbacks.</p></li><li><p>Using·the·compiler·flag·<code·class="inline">warn_missing_spec_documented</code>·will·raise·a·warning·when |
| 286 | spec·attributes·are·missing·in·documented·functions,·types,·and·callbacks.</p></li><li><p><code·class="inline">moduledoc</code>s·and·<code·class="inline">doc</code>s·may·refer·to·external·files·to·be·embedded,·such·as·<code·class="inline">-doc·{file,·"README.md"}.</code>,·which·refers·to·the·file·<code·class="inline">README.md</code>·found·in·the·current·working·directory.</p></li><li><p>The·compiler·warns·about·exported·functions·whose·specs·refer·to·hidden·types.·Thus,·there·will·be·warnings·when·a·hidden·type·(meaning,·the·type·is·not·part·of·the·documentation)·gets·used·in·an·exported·function.</p></li></ul><p>Own·Id:·OTP-18916·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7936"·title="">PR-7936</a></p></li><li><p>New·<a·href="ets.html"><code·class="inline">ets</code></a>·functions·<a·href="ets.html#first_lookup/1"><code·class="inline">ets:first_lookup/1</code></a>,·<a·href="ets.html#next_lookup/2"><code·class="inline">ets:next_lookup/2</code></a>,·<a·href="ets.html#prev_lookup/2"><code·class="inline">ets:prev_lookup/2</code></a>·and·<a·href="ets.html#last_lookup/1"><code·class="inline">ets:last_lookup/1</code></a>.·Example:·<code·class="inline">ets:next_lookup/1</code>·is·equivalent·to·<a·href="ets.html#next/2"><code·class="inline">ets:next/2</code></a>·followed·by·<a·href="ets.html#lookup/2"><code·class="inline">ets:lookup/2</code></a>·with·the·next·key.·The·new·combined·functions·are·more·efficient·and·with·guaranteed·atomicity.</p><p>Own·Id:·OTP-18923·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/6791"·title="">PR-6791</a></p></li><li><p>The·<code·class="inline">maybe</code>·expression·is·now·enabled·by·default.</p><p>To·use·<code·class="inline">maybe</code>·as·an·atom,·it·needs·to·be·single-quoted.·Alternatively,·the·<code·class="inline">maybe</code>·expression·can·be·disabled·by·disabling·the·<code·class="inline">maybe_expr</code>·feature.·That·can·be·done·by·placing·the·following·the·line·at·the·beginning·of·an·Erlang·source·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">feature</span><span·class="p"·data-group-id=" | 286 | spec·attributes·are·missing·in·documented·functions,·types,·and·callbacks.</p></li><li><p><code·class="inline">moduledoc</code>s·and·<code·class="inline">doc</code>s·may·refer·to·external·files·to·be·embedded,·such·as·<code·class="inline">-doc·{file,·"README.md"}.</code>,·which·refers·to·the·file·<code·class="inline">README.md</code>·found·in·the·current·working·directory.</p></li><li><p>The·compiler·warns·about·exported·functions·whose·specs·refer·to·hidden·types.·Thus,·there·will·be·warnings·when·a·hidden·type·(meaning,·the·type·is·not·part·of·the·documentation)·gets·used·in·an·exported·function.</p></li></ul><p>Own·Id:·OTP-18916·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7936"·title="">PR-7936</a></p></li><li><p>New·<a·href="ets.html"><code·class="inline">ets</code></a>·functions·<a·href="ets.html#first_lookup/1"><code·class="inline">ets:first_lookup/1</code></a>,·<a·href="ets.html#next_lookup/2"><code·class="inline">ets:next_lookup/2</code></a>,·<a·href="ets.html#prev_lookup/2"><code·class="inline">ets:prev_lookup/2</code></a>·and·<a·href="ets.html#last_lookup/1"><code·class="inline">ets:last_lookup/1</code></a>.·Example:·<code·class="inline">ets:next_lookup/1</code>·is·equivalent·to·<a·href="ets.html#next/2"><code·class="inline">ets:next/2</code></a>·followed·by·<a·href="ets.html#lookup/2"><code·class="inline">ets:lookup/2</code></a>·with·the·next·key.·The·new·combined·functions·are·more·efficient·and·with·guaranteed·atomicity.</p><p>Own·Id:·OTP-18923·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/6791"·title="">PR-6791</a></p></li><li><p>The·<code·class="inline">maybe</code>·expression·is·now·enabled·by·default.</p><p>To·use·<code·class="inline">maybe</code>·as·an·atom,·it·needs·to·be·single-quoted.·Alternatively,·the·<code·class="inline">maybe</code>·expression·can·be·disabled·by·disabling·the·<code·class="inline">maybe_expr</code>·feature.·That·can·be·done·by·placing·the·following·the·line·at·the·beginning·of·an·Erlang·source·file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">feature</span><span·class="p"·data-group-id="7983487778-1">(</span><span·class="ss">maybe_expr</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">disable</span><span·class="p"·data-group-id="7983487778-1">)</span><span·class="p">.</span></code></pre><p>Another·way·to·disable·the·<[·...·truncated·by·diffoscope;·len:·688,·SHA:·0d494a32a42e977774e129559e7c1b04e8952db88956b6cac7f26700d2dc149d·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 287 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="7 | 287 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="7850421347-2">(</span><span·class="p"·data-group-id="7850421347-3">[</span><span·class="ss">f</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data-group-id="7850421347-3">]</span><span·class="p"·data-group-id="7850421347-2">)</span><span·class="p">.</span><span·class="w"> |
| 288 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="7 | 288 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="7850421347-4">(</span><span·class="ss">r</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7850421347-5">{</span><span·class="ss">a</span><span·class="p">,</span><span·class="ss">b</span><span·class="p">,</span><span·class[·...·truncated·by·diffoscope;·len:·108,·SHA:·a4040fa8f017f42ddbf9de0e9cc246a95e914a9ade20ed0a0cc0673b2b35c7ce·...·]-4">)</span><span·class="p">.</span><span·class="w"> |
| 289 | </span><span·class="nf">f</span><span·class="p"·data-group-id="7 | 289 | </span><span·class="nf">f</span><span·class="p"·data-group-id="7850421347-6">(</span><span·class="p"·data-group-id="7850421347-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 290 | ····</span><span·class="o">#</span><span·class="ss">r</span><span·class="p"·data-group-id="7 | 290 | ····</span><span·class="o">#</span><span·class="ss">r</span><span·class="p"·data-group-id="7850421347-7">{</span><span·class="ss">a</span><span·class="o">=</span><span·class="mi">1</span><span·class="p"·data-group-id="7850421347-7">}</span><span·class="o">#</span><span·class="ss">r</span><span·class="p"·data-group-id="7850421347-8">{</span><span·[·...·truncated·by·diffoscope;·len:·109,·SHA:·f3f8e72dadadc1fd111dfc3b8acd1719c2e8ac303b425a91893f49be8cfaa9c4·...·]-8">}</span><span·class="p">.</span></code></pre><p>The·compiler·raises·the·following·warning:</p><pre><code·class="text">1>·c(t). |
| 291 | t.erl:6:12:·Warning:·expression·updates·a·literal | 291 | t.erl:6:12:·Warning:·expression·updates·a·literal |
| 292 | %····6|·····#r{a=1}#r{b=2}. | 292 | %····6|·····#r{a=1}#r{b=2}. |
| 293 | %·····|············^</code></pre><p>Own·Id:·OTP-18951·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8069"·title="">PR-8069</a></p></li><li><p>The·documentation·has·been·migrated·to·use·Markdown·and·ExDoc.</p><p>Own·Id:·OTP-18955·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8026"·title="">PR-8026</a></p></li><li><p>Optimized·<code·class="inline">ets:foldl</code>·and·<code·class="inline">ets:foldr</code>·to·use·new·<code·class="inline">ets:next_lookup</code>.·Also·made·them·immune·against·table·renaming.</p><p>Own·Id:·OTP-18993·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8048"·title="">PR-8048</a></p></li><li><p>Windows·now·supports·all·functions·in·<a·href="math.html"><code·class="inline">math</code></a>.</p><p>Own·Id:·OTP-19001·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8164"·title="">PR-8164</a></p></li><li><p><a·href="erl_lint.html"><code·class="inline">erl_lint</code></a>·(and·by·extension·the·<a·href="../../../../lib/compiler-8.6/doc/html/compile.html"><code·class="inline">compiler</code></a>)·will·now·warn·for·code·using·deprecated·callbacks.</p><p>The·only·callback·currenly·deprecated·is·<code·class="inline">format_status/2</code>·in·<a·href="gen_server.html#c:format_status/2"><code·class="inline">gen_server</code></a>,·<a·href="gen_event.html#c:format_status/2"><code·class="inline">gen_event</code></a>·and·<a·href="gen_server.html#c:format_status/2"><code·class="inline">gen_statem</code></a>.</p><p>You·can·use·<code·class="inline">nowarn_deprecated_callback</code>·to·silence·the·warning.</p><p>Own·Id:·OTP-19010·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8205"·title="">PR-8205</a></p></li><li><p>There·is·a·new·module·<a·href="json.html"><code·class="inline">json</code></a>·for·encoding·and·decoding·<a·href="https://en.wikipedia.org/wiki/JSON">JSON</a>.</p><p>Both·encoding·and·decoding·can·be·customized.·Decoding·can·be·done·in·a·SAX-like·fashion·and·handle·multiple·documents·and·streams·of·data.</p><p>Own·Id:·OTP-19020·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8111"·title="">PR-8111</a></p></li></ul><h2·id="stdlib-5-2-3-3"·class="section-heading"> | 293 | %·····|············^</code></pre><p>Own·Id:·OTP-18951·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8069"·title="">PR-8069</a></p></li><li><p>The·documentation·has·been·migrated·to·use·Markdown·and·ExDoc.</p><p>Own·Id:·OTP-18955·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8026"·title="">PR-8026</a></p></li><li><p>Optimized·<code·class="inline">ets:foldl</code>·and·<code·class="inline">ets:foldr</code>·to·use·new·<code·class="inline">ets:next_lookup</code>.·Also·made·them·immune·against·table·renaming.</p><p>Own·Id:·OTP-18993·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8048"·title="">PR-8048</a></p></li><li><p>Windows·now·supports·all·functions·in·<a·href="math.html"><code·class="inline">math</code></a>.</p><p>Own·Id:·OTP-19001·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8164"·title="">PR-8164</a></p></li><li><p><a·href="erl_lint.html"><code·class="inline">erl_lint</code></a>·(and·by·extension·the·<a·href="../../../../lib/compiler-8.6/doc/html/compile.html"><code·class="inline">compiler</code></a>)·will·now·warn·for·code·using·deprecated·callbacks.</p><p>The·only·callback·currenly·deprecated·is·<code·class="inline">format_status/2</code>·in·<a·href="gen_server.html#c:format_status/2"><code·class="inline">gen_server</code></a>,·<a·href="gen_event.html#c:format_status/2"><code·class="inline">gen_event</code></a>·and·<a·href="gen_server.html#c:format_status/2"><code·class="inline">gen_statem</code></a>.</p><p>You·can·use·<code·class="inline">nowarn_deprecated_callback</code>·to·silence·the·warning.</p><p>Own·Id:·OTP-19010·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8205"·title="">PR-8205</a></p></li><li><p>There·is·a·new·module·<a·href="json.html"><code·class="inline">json</code></a>·for·encoding·and·decoding·<a·href="https://en.wikipedia.org/wiki/JSON">JSON</a>.</p><p>Both·encoding·and·decoding·can·be·customized.·Decoding·can·be·done·in·a·SAX-like·fashion·and·handle·multiple·documents·and·streams·of·data.</p><p>Own·Id:·OTP-19020·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8111"·title="">PR-8111</a></p></li></ul><h2·id="stdlib-5-2-3-3"·class="section-heading"> |
| 294 | ··<a·href="#stdlib-5-2-3-3"·class="hover-link"> | 294 | ··<a·href="#stdlib-5-2-3-3"·class="hover-link"> |
| 295 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 295 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 296 | ··</a> | 296 | ··</a> |
| 297 | ··<span·class="text">STDLIB·5.2.3.3</span> | 297 | ··<span·class="text">STDLIB·5.2.3.3</span> |
| Offset 138, 21 lines modified | Offset 138, 21 lines modified | ||
| 138 | ··<a·href="#module-notes"·class="hover-link"> | 138 | ··<a·href="#module-notes"·class="hover-link"> |
| 139 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 139 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 140 | ··</a> | 140 | ··</a> |
| 141 | ··<span·class="text">Notes</span> | 141 | ··<span·class="text">Notes</span> |
| 142 | </h2> | 142 | </h2> |
| 143 | <p><a·href=""·id="notes"></a></p><p>Functions·<a·href="#append/3"><code·class="inline">append/3</code></a>·and·<a·href="#append_list/3"><code·class="inline">append_list/3</code></a>·are | 143 | <p><a·href=""·id="notes"></a></p><p>Functions·<a·href="#append/3"><code·class="inline">append/3</code></a>·and·<a·href="#append_list/3"><code·class="inline">append_list/3</code></a>·are |
| 144 | included·so·that·keyed·values·can·be·stored·in·a·list·<em>accumulator</em>,·for | 144 | included·so·that·keyed·values·can·be·stored·in·a·list·<em>accumulator</em>,·for |
| 145 | example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">D0</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id=" | 145 | example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">D0</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id="5467105444-1">(</span><span·class="p"·data-group-id="5467105444-1">)</span><span·class="p">,</span><span·class="w"> |
| 146 | ··</span><span·class="n">D1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">store</span><span·class="p"·data-group-id=" | 146 | ··</span><span·class="n">D1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">store</span><span·class="p"·data-group-id="5467105444-2">(</span><span·class="ss">files</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5467105444-3">[</span><span·class="p"·data-group-id="5467105444-3">]</span><span·class="p">,</span><span·class="w">·</span><sp[·...·truncated·by·diffoscope;·len:·62,·SHA:·289e08e75e5cc5b0440e361d4e78833bcd9a2ba14b698072805a3816b22c51c9·...·]4-2">)</span><span·class="p">,</span><span·class="w"> |
| 147 | ··</span><span·class="n">D2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id=" | 147 | ··</span><span·class="n">D2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id="5467105444-4">(</span><span·class="ss">files</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">f1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">D1</span><span·class="p"·data-group-id="5467105444-4">)</span><span·class="p">,</span><span·class="w"> |
| 148 | ··</span><span·class="n">D3</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id=" | 148 | ··</span><span·class="n">D3</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id="5467105444-5">(</span><span·class="ss">files</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">f2</span><span·class="p">,</span><span·class="w">·</span><span·class="n">D2</span><span·class="p"·data-group-id="5467105444-5">)</span><span·class="p">,</span><span·class="w"> |
| 149 | ··</span><span·class="n">D4</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id=" | 149 | ··</span><span·class="n">D4</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id="5467105444-6">(</span><span·class="ss">files</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">f3</span><span·class="p">,</span><span·class="w">·</span><span·class="n">D3</span><span·class="p"·data-group-id="5467105444-6">)</span><span·class="p">,</span><span·class="w"> |
| 150 | ··</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">fetch</span><span·class="p"·data-group-id=" | 150 | ··</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">fetch</span><span·class="p"·data-group-id="5467105444-7">(</span><span·class="ss">files</span><span·class="p">,</span><span·class="w">·</span><span·class="n">D4</span><span·class="p"·data-group-id="5467105444-7">)</span><span·class="p">.</span><span·class="w"> |
| 151 | </span><span·class="p"·data-group-id=" | 151 | </span><span·class="p"·data-group-id="5467105444-8">[</span><span·class="ss">f1</span><span·class="p">,</span><span·class="ss">f2</span><span·class="p">,</span><span·class="ss">f3</span><span·class="p"·data-group-id="5467105444-8">]</span></code></pre><p>This·saves·the·trouble·of·first·fetching·a·keyed·value,·appending·a·new·value·to |
| 152 | the·list·of·stored·values,·and·storing·the·result.</p><p>Function·<a·href="#fetch/2"><code·class="inline">fetch/2</code></a>·is·to·be·used·if·the·key·is·known·to·be·in·the | 152 | the·list·of·stored·values,·and·storing·the·result.</p><p>Function·<a·href="#fetch/2"><code·class="inline">fetch/2</code></a>·is·to·be·used·if·the·key·is·known·to·be·in·the |
| 153 | dictionary,·otherwise·function·<a·href="#find/2"><code·class="inline">find/2</code></a>.</p><h2·id="module-see-also"·class="section-heading"> | 153 | dictionary,·otherwise·function·<a·href="#find/2"><code·class="inline">find/2</code></a>.</p><h2·id="module-see-also"·class="section-heading"> |
| 154 | ··<a·href="#module-see-also"·class="hover-link"> | 154 | ··<a·href="#module-see-also"·class="hover-link"> |
| 155 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 155 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 156 | ··</a> | 156 | ··</a> |
| 157 | ··<span·class="text">See·Also</span> | 157 | ··<span·class="text">See·Also</span> |
| 158 | </h2> | 158 | </h2> |
| Offset 527, 24 lines modified | Offset 527, 24 lines modified | ||
| 527 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·append(Key,·Value,·Orddict1)·->·Orddict2 | 527 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·append(Key,·Value,·Orddict1)·->·Orddict2 |
| 528 | ················when·Orddict1·::·<a·href="#t:orddict/2">orddict</a>(Key,·Value),·Orddict2·::·<a·href="#t:orddict/2">orddict</a>(Key,·Value).</pre> | 528 | ················when·Orddict1·::·<a·href="#t:orddict/2">orddict</a>(Key,·Value),·Orddict2·::·<a·href="#t:orddict/2">orddict</a>(Key,·Value).</pre> |
| 529 | ······</div> | 529 | ······</div> |
| 530 | <p>Appends·a·new·<code·class="inline">Value</code>·to·the·current·list·of·values·associated·with·<code·class="inline">Key</code>.·An | 530 | <p>Appends·a·new·<code·class="inline">Value</code>·to·the·current·list·of·values·associated·with·<code·class="inline">Key</code>.·An |
| 531 | exception·is·generated·if·the·initial·value·associated·with·<code·class="inline">Key</code>·is·not·a·list | 531 | exception·is·generated·if·the·initial·value·associated·with·<code·class="inline">Key</code>·is·not·a·list |
| 532 | of·values.</p><p>See·also·section·<a·href="orddict.html#module-notes">Notes</a>.</p><p><em>Example·1:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">OrdDict1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">from_list</span><span·class="p"·data-group-id=" | 532 | of·values.</p><p>See·also·section·<a·href="orddict.html#module-notes">Notes</a>.</p><p><em>Example·1:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">OrdDict1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">from_list</span><span·class="p"·data-group-id="5979163192-1">(</span><span·class="p"·data-group-id="5979163192-2">[</span><span·class="p"·data-group-id="5979163192-3">{</span><span·class="ss">x</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5979163192-4">[</span><s[·...·truncated·by·diffoscope;·len:·198,·SHA:·dab29a6d915f3d28ed5bfa1a0f995ed5c4f6292f79df9ae77e34d20acef70a7b·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 533 | </span><span·class="p"·data-group-id=" | 533 | </span><span·class="p"·data-group-id="5979163192-5">[</span><span·class="p"·data-group-id="5979163192-6">{</span><span·class="ss">x</span><span·class="p">,</span><span·class="p"·data-group-id="5979163192-7">[</span><span·class="p"·data-group-id="5979163192-7">]</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·68,·SHA:·9ee526e9b515dfe0d0c654b7d4241e3a0180606a8fa2159e488bed3e72b5edea·...·]-5">]</span><span·class="gp·unselectable"> |
| 534 | 2>·</span><span·class="n">OrdDict2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id=" | 534 | 2>·</span><span·class="n">OrdDict2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id="5979163192-8">(</span><span·class="ss">x</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">OrdDict1</span><span·class="p"·data-group-id="5979163192-8">)</span><span·class="p">.</span><span·class="w"> |
| 535 | </span><span·class="p"·data-group-id=" | 535 | </span><span·class="p"·data-group-id="5979163192-9">[</span><span·class="p"·data-group-id="5979163192-10">{</span><span·class="ss">x</span><span·class="p">,</span><span·class="p"·data-group-id="5979163192-11">[</span><span·class="mi">1</span><span·class="p"·data-group-id="5979163192-11">]</spa[·...·truncated·by·diffoscope;·len:·97,·SHA:·056f1924d3afbdfb76fd47eef4f7e375c28274aa92432032405ff1757e6d118a·...·]-9">]</span><span·class="gp·unselectable"> |
| 536 | 3>·</span><span·class="n">OrdDict3</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id=" | 536 | 3>·</span><span·class="n">OrdDict3</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id="5979163192-12">(</span><span·class="ss">x</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">2</span><span·class="p">,</span><span·class="w">·</span><span·class="n">OrdDict2</span><span·class="p"·data-group-id="5979163192-12">)</span><span·class="p">.</span><span·class="w"> |
| 537 | </span><span·class="p"·data-group-id=" | 537 | </span><span·class="p"·data-group-id="5979163192-13">[</span><span·class="p"·data-group-id="5979163192-14">{</span><span·class="ss">x</span><span·class="p">,</span><span·class="p"·data-group-id="5979163192-15">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><s[·...·truncated·by·diffoscope;·len:·147,·SHA:·de7cc191ae1d651141facfe812a9bd3adabc04ba1f7c0cee68e4afa0dc18ba8e·...·]-13">]</span><span·class="gp·unselectable"> |
| 538 | 4>·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id=" | 538 | 4>·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id="5979163192-16">(</span><span·class="ss">y</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">3</span><span·class="p">,</span><span·class="w">·</span><span·class="n">OrdDict3</span><span·class="p"·data-group-id="5979163192-16">)</span><span·class="p">.</span><span·class="w"> |
| 539 | </span><span·class="p"·data-group-id="7876153796-17">[</span><span·class="p"·data-group-id="7876153796-18">{</span><span·class="ss">x</span><span·class="p">,</span><span·class="p"·data-group-id="7876153796-19">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="7876153796-19">]</span><span·class="p"·data-group-id="7876153796-18">}</span><span·class="p">,</span><span·class="p"·data-group-id="7876153796-20">{</span><span·class="ss">y</span><span·class="p">,</span><span·class="p"·data-group-id="7876153796-21">[</span><span·class="mi">3</span><span·class="p"·data-group-id="7876153796-21">]</span><span·class="p"·data-group-id="7876153796-20">}</span><span·class="p"·data-group-id="7876153796-17">]</span></code></pre><p><em>Example·2:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">OrdDict1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">from_list</span><span·class="p"·data-group-id="2864344096-1">(</span><span·class="p"·data-group-id="2864344096-2">[</span><span·class="p"·data-group-id="2864344096-3">{</span><span·class="ss">a</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">no_list</span><span·class="p"·data-group-id="2864344096-3">}</span><span·class="p"·data-group-id="2864344096-2">]</span><span·class="p"·data-group-id="2864344096-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 540 | </span><span·class="p"·data-group-id=" | 539 | </span><span·class="p"·data-group-id="5979163192-17">[</span><span·class="p"·data-group-id="5979163192-18">{</span><span·class="ss">x</span><span·class="p">,</span><span·class="p"·data-group-id="5979163192-19">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><s[·...·truncated·by·diffoscope;·len:·1255,·SHA:·674569130bd40ce953e1736756294f1282e42d9ad1c0b1dea71cab28404f83f8·...·]"> |
| 540 | </span><span·class="p"·data-group-id="1018943007-4">[</span><span·class="p"·data-group-id="1018943007-5">{</span><span·class="ss">a</span><span·class="p">,</span><span·class="ss">no_list</span><span·class="p"·data-group-id="1018943007-5">}</span><span·class="p"·data-group-id="1018943007-4">]</span><span·class="gp·unselectable"> | ||
| 541 | 2>·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id=" | 541 | 2>·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">append</span><span·class="p"·data-group-id="1018943007-6">(</span><span·class="ss">a</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">OrdDict1</span><span·class="p"·data-group-id="1018943007-6">)</span><span·class="p">.</span><span·class="w"> |
| 542 | </span><span·class="gt">**·exception·error:·bad·argument | 542 | </span><span·class="gt">**·exception·error:·bad·argument |
| 543 | ·····in·operator··++/2 | 543 | ·····in·operator··++/2 |
| 544 | ········called·as·no_list·++·[1]</span></code></pre> | 544 | ········called·as·no_list·++·[1]</span></code></pre> |
| 545 | ··</section> | 545 | ··</section> |
| 546 | </section> | 546 | </section> |
| 547 | <section·class="detail"·id="append_list/3"> | 547 | <section·class="detail"·id="append_list/3"> |
| Offset 571, 20 lines modified | Offset 571, 20 lines modified | ||
| 571 | ·························Orddict1·::·<a·href="#t:orddict/2">orddict</a>(Key,·Value), | 571 | ·························Orddict1·::·<a·href="#t:orddict/2">orddict</a>(Key,·Value), |
| 572 | ·························Orddict2·::·<a·href="#t:orddict/2">orddict</a>(Key,·Value).</pre> | 572 | ·························Orddict2·::·<a·href="#t:orddict/2">orddict</a>(Key,·Value).</pre> |
| 573 | ······</div> | 573 | ······</div> |
| 574 | <p>Appends·a·list·of·values·<code·class="inline">ValList</code>·to·the·current·list·of·values·associated·with | 574 | <p>Appends·a·list·of·values·<code·class="inline">ValList</code>·to·the·current·list·of·values·associated·with |
| 575 | <code·class="inline">Key</code>.·An·exception·is·generated·if·the·initial·value·associated·with·<code·class="inline">Key</code>·is | 575 | <code·class="inline">Key</code>.·An·exception·is·generated·if·the·initial·value·associated·with·<code·class="inline">Key</code>·is |
| 576 | not·a·list·of·values.</p><p>See·also·section·<a·href="orddict.html#module-notes">Notes</a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">OrdDict1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">from_list</span><span·class="p"·data-group-id="9480087832-1">(</span><span·class="p"·data-group-id="9480087832-2">[</span><span·class="p"·data-group-id="9480087832-3">{</span><span·class="ss">x</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9480087832-4">[</span><span·class="p"·data-group-id="9480087832-4">]</span><span·class="p"·data-group-id="9480087832-3">}</span><span·class="p"·data-group-id="9480087832-2">]</span><span·class="p"·data-group-id="9480087832-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 577 | 576 | not·a·list·of·values.</p><p>See·also·section·<a·href="orddict.html#module-notes">Notes</a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">OrdDict1</span><span·class="w"[·...·truncated·by·diffoscope;·len:·680,·SHA:·6c27d0e779c436b4118fbdd137e6e7fdafda296069ce828b96c532407c8b1d34·...·]"> | |
| 577 | </span><span·class="p"·data-group-id="6189044389-5">[</span><span·class="p"·data-group-id="6189044389-6">{</span><span·class="ss">x</span><span·class="p">,</span><span·class="p"·data-group-id="6189044389-7">[</span><span·class="p"·data-group-id="6189044389-7">]</span><span·class="p"·data-group-id="6189044389-6">}</span><span·class="p"·data-group-id="6189044389-5">]</span><span·class="gp·unselectable"> | ||
| 578 | 2>·</span><span·class="n">OrdDict2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">append_list</span><span·class="p"·data-group-id=" | 578 | 2>·</span><span·class="n">OrdDict2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">append_list</span><span·class="p"·data-group-id="6189044389-8">(</span><span·class="ss">x</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6189044389-9">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="618[·...·truncated·by·diffoscope;·len:·139,·SHA:·51dace101b025301840134c23809b89a34d95a45a32c1d6240bb598105ed34b3·...·]-8">)</span><span·class="p">.</span><span·class="w"> |
| 579 | </span><span·class="p"·data-group-id=" | 579 | </span><span·class="p"·data-group-id="6189044389-10">[</span><span·class="p"·data-group-id="6189044389-11">{</span><span·class="ss">x</span><span·class="p">,</span><span·class="p"·data-group-id="6189044389-12">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><s[·...·truncated·by·diffoscope;·len:·147,·SHA:·93623b28b83e57f4fe5ef57fdc29c172e29237e7e404b304ae02b104653cb287·...·]-10">]</span><span·class="gp·unselectable"> |
| 580 | 3>·</span><span·class="n">OrdDict3</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">append_list</span><span·class="p"·data-group-id=" | 580 | 3>·</span><span·class="n">OrdDict3</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">append_list</span><span·class="p"·data-group-id="6189044389-13">(</span><span·class="ss">y</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6189044389-14">[</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">4</span><span·class="p"·data-group-id="6[·...·truncated·by·diffoscope;·len:·142,·SHA:·face841e3aed36e4d3990da9a130c346224f2df18843d26af27ce673fe50f0cb·...·]-13">)</span><span·class="p">.</span><span·class="w"> |
| 581 | </span><span·class="p"·data-group-id=" | 581 | </span><span·class="p"·data-group-id="6189044389-15">[</span><span·class="p"·data-group-id="6189044389-16">{</span><span·class="ss">x</span><span·class="p">,</span><span·class="p"·data-group-id="6189044389-17">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><s[·...·truncated·by·diffoscope;·len:·510,·SHA:·ed4e913309a8fb4ad990dd2c4636b0be5d13dfc92cebb5cd41a4713f1bbba15f·...·]-15">]</span></code></pre> |
| 582 | ··</section> | 582 | ··</section> |
| 583 | </section> | 583 | </section> |
| 584 | <section·class="detail"·id="erase/2"> | 584 | <section·class="detail"·id="erase/2"> |
| 585 | ··<div·class="detail-header"> | 585 | ··<div·class="detail-header"> |
| 586 | ····<a·href="#erase/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 586 | ····<a·href="#erase/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 587 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 587 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 603, 18 lines modified | Offset 603, 18 lines modified | ||
| 603 | ······<div·class="specs"> | 603 | ······<div·class="specs"> |
| 604 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·erase(Key,·Orddict1)·->·Orddict2 | 604 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·erase(Key,·Orddict1)·->·Orddict2 |
| 605 | ···············when·Orddict1·::·<a·href="#t:orddict/2">orddict</a>(Key,·Value),·Orddict2·::·<a·href="#t:orddict/2">orddict</a>(Key,·Value).</pre> | 605 | ···············when·Orddict1·::·<a·href="#t:orddict/2">orddict</a>(Key,·Value),·Orddict2·::·<a·href="#t:orddict/2">orddict</a>(Key,·Value).</pre> |
| 606 | ······</div> | 606 | ······</div> |
| 607 | <p>Erases·all·items·with·a·specified·key·from·a·dictionary.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">OrdDict1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">from_list</span><span·class="p"·data-group-id=" | 607 | <p>Erases·all·items·with·a·specified·key·from·a·dictionary.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">OrdDict1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">from_list</span><span·class="p"·data-group-id="7791299351-1">(</span><span·class="p"·data-group-id="7791299351-2">[</span><span·class="p"·data-group-id="7791299351-3">{</span><span·class="ss">a</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·368,·SHA:·11d54a857f81025c9e3a55f4e4f6606fdb408ad0faf540124069c370c65dd8ca·...·]1-1">)</span><span·class="p">.</span><span·class="w"> |
| 608 | </span><span·class="p"·data-group-id=" | 608 | </span><span·class="p"·data-group-id="7791299351-5">[</span><span·class="p"·data-group-id="7791299351-6">{</span><span·class="ss">a</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="7791299351-6">}</span><span·class="p">,</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·190,·SHA:·595b7bb38b0200912cd2d89862d47747848e66f5543954d5c04efb121a6ce0ce·...·]1-5">]</span><span·class="gp·unselectable"> |
| 609 | 2>·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">erase</span><span·class="p"·data-group-id=" | 609 | 2>·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">erase</span><span·class="p"·data-group-id="7791299351-8">(</span><span·class="ss">a</span><span·class="p">,</span><span·class="w">·</span><span·class="n">OrdDict1</span><span·class="p"·data-group-id="7791299351-8">)</span><span·class="p">.</span><span·class="w"> |
| 610 | </span><span·class="p"·data-group-id=" | 610 | </span><span·class="p"·data-group-id="7791299351-9">[</span><span·class="p"·data-group-id="7791299351-10">{</span><span·class="ss">b</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="7791299351-10">}</span><span·class="p"·data-group-id="7791299351-9">]</span></code></pre> |
| 611 | ··</section> | 611 | ··</section> |
| 612 | </section> | 612 | </section> |
| 613 | <section·class="detail"·id="fetch/2"> | 613 | <section·class="detail"·id="fetch/2"> |
| 614 | ··<div·class="detail-header"> | 614 | ··<div·class="detail-header"> |
| 615 | ····<a·href="#fetch/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 615 | ····<a·href="#fetch/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 616 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 616 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 634, 19 lines modified | Offset 634, 19 lines modified | ||
| 634 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·fetch(Key,·Orddict)·->·Value·when·Orddict·::·<a·href="#t:orddict/2">orddict</a>(Key,·Value).</pre> | 634 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·fetch(Key,·Orddict)·->·Value·when·Orddict·::·<a·href="#t:orddict/2">orddict</a>(Key,·Value).</pre> |
| 635 | ······</div> | 635 | ······</div> |
| 636 | <p>Returns·the·value·associated·with·<code·class="inline">Key</code>·in·dictionary·<code·class="inline">Orddict</code>.·This·function | 636 | <p>Returns·the·value·associated·with·<code·class="inline">Key</code>·in·dictionary·<code·class="inline">Orddict</code>.·This·function |
| 637 | assumes·that·the·<code·class="inline">Key</code>·is·present·in·the·dictionary.·An·exception·is·generated | 637 | assumes·that·the·<code·class="inline">Key</code>·is·present·in·the·dictionary.·An·exception·is·generated |
| 638 | if·<code·class="inline">Key</code>·is·not·in·the·dictionary.</p><p>See·also·section·<a·href="orddict.html#module-notes">Notes</a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">OrdDict1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">from_list</span><span·class="p"·data-group-id=" | 638 | if·<code·class="inline">Key</code>·is·not·in·the·dictionary.</p><p>See·also·section·<a·href="orddict.html#module-notes">Notes</a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">OrdDict1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">from_list</span><span·class="p"·data-group-id="5200414873-1">(</span><span·class="p"·data-group-id="5200414873-2">[</span><span·class="p"·data-group-id="5200414873-3">{</span><span·class="ss">a</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·369,·SHA:·f9617f0f163d95bc5c25c32e0b335f48b4d9c3af1d1a4e428c0422b6ca28e8c4·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 639 | </span><span·class="p"·data-group-id=" | 639 | </span><span·class="p"·data-group-id="5200414873-5">[</span><span·class="p"·data-group-id="5200414873-6">{</span><span·class="ss">a</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="5200414873-6">}</span><span·class="p">,</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·191,·SHA:·f5161d06aeba9f963bd65872da70b8cb3363d3494e155428692f4792d58b08d5·...·]-5">]</span><span·class="gp·unselectable"> |
| 640 | 2>·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">fetch</span><span·class="p"·data-group-id=" | 640 | 2>·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">fetch</span><span·class="p"·data-group-id="5200414873-8">(</span><span·class="ss">a</span><span·class="p">,</span><span·class="w">·</span><span·class="n">OrdDict1</span><span·class="p"·data-group-id="5200414873-8">)</span><span·class="p">.</span><span·class="w"> |
| 641 | </span><span·class="mi">1</span><span·class="gp·unselectable"> | 641 | </span><span·class="mi">1</span><span·class="gp·unselectable"> |
| 642 | 3>·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">fetch</span><span·class="p"·data-group-id=" | 642 | 3>·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">fetch</span><span·class="p"·data-group-id="5200414873-9">(</span><span·class="ss">missing</span><span·class="p">,</span><span·class="w">·</span><span·class="n">OrdDict1</span><span·class="p"·data-group-id="5200414873-9">)</span><span·class="p">.</span><span·class="w"> |
| 643 | </span><span·class="gt">**·exception·error:·no·function·clause·matching·orddict:fetch(missing,[])</span></code></pre> | 643 | </span><span·class="gt">**·exception·error:·no·function·clause·matching·orddict:fetch(missing,[])</span></code></pre> |
| 644 | ··</section> | 644 | ··</section> |
| 645 | </section> | 645 | </section> |
| 646 | <section·class="detail"·id="fetch_keys/1"> | 646 | <section·class="detail"·id="fetch_keys/1"> |
| 647 | ··<div·class="detail-header"> | 647 | ··<div·class="detail-header"> |
| 648 | ····<a·href="#fetch_keys/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 648 | ····<a·href="#fetch_keys/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 665, 18 lines modified | Offset 665, 18 lines modified | ||
| 665 | ······<div·class="specs"> | 665 | ······<div·class="specs"> |
| 666 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·fetch_keys(Orddict)·->·Keys·when·Orddict·::·<a·href="#t:orddict/2">orddict</a>(Key,·Value·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>()),·Keys·::·[Key].</pre> | 666 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·fetch_keys(Orddict)·->·Keys·when·Orddict·::·<a·href="#t:orddict/2">orddict</a>(Key,·Value·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>()),·Keys·::·[Key].</pre> |
| 667 | ······</div> | 667 | ······</div> |
| 668 | <p>Returns·a·list·of·all·keys·in·a·dictionary.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">OrdDict1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">from_list</span><span·class="p"·data-group-id=" | 668 | <p>Returns·a·list·of·all·keys·in·a·dictionary.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">OrdDict1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">from_list</span><span·class="p"·data-group-id="7998152256-1">(</span><span·class="p"·data-group-id="7998152256-2">[</span><span·class="p"·data-group-id="7998152256-3">{</span><span·class="ss">a</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·368,·SHA:·fc2e7730fe2ef69e90bf99eec78f43720ee830e73e7ecf3a026b7c394b53dcd8·...·]6-1">)</span><span·class="p">.</span><span·class="w"> |
| 669 | </span><span·class="p"·data-group-id=" | 669 | </span><span·class="p"·data-group-id="7998152256-5">[</span><span·class="p"·data-group-id="7998152256-6">{</span><span·class="ss">a</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="7998152256-6">}</span><span·class="p">,</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·190,·SHA:·c1bf2ad83fe3b0fb598e99b26cb699a37b6e77052ba8d13107d3575ae66d27d3·...·]6-5">]</span><span·class="gp·unselectable"> |
| 670 | 2>·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">fetch_keys</span><span·class="p"·data-group-id=" | 670 | 2>·</span><span·class="nc">orddict</span><span·class="p">:</span><span·class="nf">fetch_keys</span><span·class="p"·data-group-id="7998152256-8">(</span><span·class="n">OrdDict1</span><span·class="p"·data-group-id="7998152256-8">)</span><span·class="p">.</span><span·class="w"> |
| 671 | </span><span·class="p"·data-group-id=" | 671 | </span><span·class="p"·data-group-id="7998152256-9">[</span><span·class="ss">a</span><span·class="p">,</span><span·class="ss">b</span><span·class="p"·data-group-id="7998152256-9">]</span></code></pre> |
| 672 | ··</section> | 672 | ··</section> |
| 673 | </section> | 673 | </section> |
| 674 | <section·class="detail"·id="filter/2"> | 674 | <section·class="detail"·id="filter/2"> |
| 675 | ··<div·class="detail-header"> | 675 | ··<div·class="detail-header"> |
| 676 | ····<a·href="#filter/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 676 | ····<a·href="#filter/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 677 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 677 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 157 | employs·a·number·of·techniques·to·speed·up·testing·and·reliably·shut·down·peer | 157 | employs·a·number·of·techniques·to·speed·up·testing·and·reliably·shut·down·peer |
| 158 | nodes:</p><ul><li>peers·start·linked·to·test·runner·process.·If·the·test·case·fails,·the·peer | 158 | nodes:</p><ul><li>peers·start·linked·to·test·runner·process.·If·the·test·case·fails,·the·peer |
| 159 | node·is·stopped·automatically,·leaving·no·rogue·nodes·running·in·the | 159 | node·is·stopped·automatically,·leaving·no·rogue·nodes·running·in·the |
| 160 | background</li><li>arguments·used·to·start·the·peer·are·saved·in·the·control·process·state·for | 160 | background</li><li>arguments·used·to·start·the·peer·are·saved·in·the·control·process·state·for |
| 161 | manual·analysis.·If·the·test·case·fails,·the·CRASH·REPORT·contains·these | 161 | manual·analysis.·If·the·test·case·fails,·the·CRASH·REPORT·contains·these |
| 162 | arguments</li><li>multiple·test·cases·can·run·concurrently·speeding·up·overall·testing·process, | 162 | arguments</li><li>multiple·test·cases·can·run·concurrently·speeding·up·overall·testing·process, |
| 163 | peer·node·names·are·unique·even·when·there·are·multiple·instances·of·the·same | 163 | peer·node·names·are·unique·even·when·there·are·multiple·instances·of·the·same |
| 164 | test·suite·running·in·parallel</li></ul><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 164 | test·suite·running·in·parallel</li></ul><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="0166294005-1">(</span><span·class="ss">my_SUITE</span><span·class="p"·data-group-id="0166294005-1">)</span><span·class="p">.</span><span·class="w"> |
| 165 | </span><span·class="p">-</span><span·class="na">behaviour</span><span·class="p"·data-group-id=" | 165 | </span><span·class="p">-</span><span·class="na">behaviour</span><span·class="p"·data-group-id="0166294005-2">(</span><span·class="ss">ct_suite</span><span·class="p"·data-group-id="0166294005-2">)</span><span·class="p">.</span><span·class="w"> |
| 166 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 166 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="0166294005-3">(</span><span·class="p"·data-group-id="0166294005-4">[</span><span·class="ss">all</span><span·class="p">/</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">groups</span><span·class="p">/</span><sp[·...·truncated·by·diffoscope;·len:·116,·SHA:·35cae7755e7b4e65597420a8ad37482d441fed62467cf54fc0ed4d220fa62d39·...·]-3">)</span><span·class="p">.</span><span·class="w"> |
| 167 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 167 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="0166294005-5">(</span><span·class="p"·data-group-id="0166294005-6">[</span><span·class="ss">basic</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">args</span><span·class="p">/</span><sp[·...·truncated·by·diffoscope;·len:·506,·SHA:·c4d56997f382278c8d6175c956a5982ef0a60ab7523db039cf6e83035c8fb4e2·...·]-5">)</span><span·class="p">.</span><span·class="w"> |
| 168 | </span><span·class="w"> | 168 | </span><span·class="w"> |
| 169 | </span><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id=" | 169 | </span><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="0166294005-7">(</span><span·class="s">"common_test/include/ct.hrl"</span><span·class="p"·data-group-id="0166294005-7">)</span><span·class="p">.</span><span·class="w"> |
| 170 | </span><span·class="nf">groups</span><span·class="p"·data-group-id=" | 170 | </span><span·class="nf">groups</span><span·class="p"·data-group-id="0166294005-8">(</span><span·class="p"·data-group-id="0166294005-8">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 171 | ····</span><span·class="p"·data-group-id=" | 171 | ····</span><span·class="p"·data-group-id="0166294005-9">[</span><span·class="p"·data-group-id="0166294005-10">{</span><span·class="ss">quick</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0166294005-11">[</span><span·class="ss">parallel</span><span·class="p"·d[·...·truncated·by·diffoscope;·len:·24,·SHA:·78859ac1dd39585753f27751625752a83ae78c0ff68c5aa9b5925e07d3c5fd89·...·]-11">]</span><span·class="p">,</span><span·class="w"> |
| 172 | ········</span><span·class="p"·data-group-id=" | 172 | ········</span><span·class="p"·data-group-id="0166294005-12">[</span><span·class="ss">basic</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">args</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">named</span><span·class="p">,</span><span·class="w">·</span><sp[·...·truncated·by·diffoscope;·len:·264,·SHA:·b39bd29843ede6e0b1aedd45ad1a50f223c7d34625dbc9609a572e8045fc70b3·...·]-9">]</span><span·class="p">.</span><span·class="w"> |
| 173 | </span><span·class="nf">all</span><span·class="p"·data-group-id=" | 173 | </span><span·class="nf">all</span><span·class="p"·data-group-id="0166294005-13">(</span><span·class="p"·data-group-id="0166294005-13">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 174 | ····</span><span·class="p"·data-group-id=" | 174 | ····</span><span·class="p"·data-group-id="0166294005-14">[</span><span·class="p"·data-group-id="0166294005-15">{</span><span·class="ss">group</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">quick</span><span·class="p"·data-group-id="0166294005-15">}</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·22,·SHA:·7e9767282dde45407281dade30a399432488b2b2d4993d24431367d103756385·...·]-14">]</span><span·class="p">.</span><span·class="w"> |
| 175 | </span><span·class="nf">basic</span><span·class="p"·data-group-id=" | 175 | </span><span·class="nf">basic</span><span·class="p"·data-group-id="0166294005-16">(</span><span·class="n">Config</span><span·class="p"·data-group-id="0166294005-16">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_list</span><span·class="p"·data-group-id="0166294005-17[·...·truncated·by·diffoscope;·len:·80,·SHA:·c5973663ecf4f63e35c2f6cadbba3e23dd2fd73dd45095fc925a00a844ddb6c7·...·]-17">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 176 | ····</span><span·class="p"·data-group-id=" | 176 | ····</span><span·class="p"·data-group-id="0166294005-18">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Peer</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">Node</span><span·class="p"·data-group-id="01[·...·truncated·by·diffoscope;·len:·242,·SHA:·b884b10c31204caf76436f713304d078fc7233c0c957d8ab8d9e3ad5d8b28a35·...·]-19">)</span><span·class="p">,</span><span·class="w"> |
| 177 | ····</span><span·class="nc">peer</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id=" | 177 | ····</span><span·class="nc">peer</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id="0166294005-20">(</span><span·class="n">Peer</span><span·class="p"·data-group-id="0166294005-20">)</span><span·class="p">.</span><span·class="w"> |
| 178 | </span><span·class="nf">args</span><span·class="p"·data-group-id=" | 178 | </span><span·class="nf">args</span><span·class="p"·data-group-id="0166294005-21">(</span><span·class="n">Config</span><span·class="p"·data-group-id="0166294005-21">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_list</span><span·class="p"·data-group-id="0166294005-22[·...·truncated·by·diffoscope;·len:·80,·SHA:·c5973663ecf4f63e35c2f6cadbba3e23dd2fd73dd45095fc925a00a844ddb6c7·...·]-22">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 179 | ····</span><span·class="c1">%%·specify·additional·arguments·to·the·new·node</span><span·class="w"> | 179 | ····</span><span·class="c1">%%·specify·additional·arguments·to·the·new·node</span><span·class="w"> |
| 180 | ····</span><span·class="p"·data-group-id=" | 180 | ····</span><span·class="p"·data-group-id="0166294005-23">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Peer</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">Node</span><span·class="p"·data-group-id="01[·...·truncated·by·diffoscope;·len:·482,·SHA:·eebaac76e914a7efc58939906a3183bf49f37b84e42771c3e086895276268681·...·]-24">)</span><span·class="p">,</span><span·class="w"> |
| 181 | ····</span><span·class="nc">peer</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id=" | 181 | ····</span><span·class="nc">peer</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id="0166294005-26">(</span><span·class="n">Peer</span><span·class="p"·data-group-id="0166294005-26">)</span><span·class="p">.</span><span·class="w"> |
| 182 | </span><span·class="nf">named</span><span·class="p"·data-group-id=" | 182 | </span><span·class="nf">named</span><span·class="p"·data-group-id="0166294005-27">(</span><span·class="n">Config</span><span·class="p"·data-group-id="0166294005-27">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_list</span><span·class="p"·data-group-id="0166294005-28[·...·truncated·by·diffoscope;·len:·80,·SHA:·c5973663ecf4f63e35c2f6cadbba3e23dd2fd73dd45095fc925a00a844ddb6c7·...·]-28">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 183 | ····</span><span·class="c1">%%·pass·test·case·name·down·to·function·starting·nodes</span><span·class="w"> | 183 | ····</span><span·class="c1">%%·pass·test·case·name·down·to·function·starting·nodes</span><span·class="w"> |
| 184 | ····</span><span·class="n">Peer</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">start_node_impl</span><span·class="p"·data-group-id=" | 184 | ····</span><span·class="n">Peer</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">start_node_impl</span><span·class="p"·data-group-id="0166294005-29">(</span><span·class="ss">named_test</span><span·class="p"·data-group-id="0166294005-29">)</span><span·class="p">,</span><span·class="w"> |
| 185 | ····</span><span·class="nc">peer</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id=" | 185 | ····</span><span·class="nc">peer</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id="0166294005-30">(</span><span·class="n">Peer</span><span·class="p"·data-group-id="0166294005-30">)</span><span·class="p">.</span><span·class="w"> |
| 186 | </span><span·class="nf">start_node_impl</span><span·class="p"·data-group-id=" | 186 | </span><span·class="nf">start_node_impl</span><span·class="p"·data-group-id="0166294005-31">(</span><span·class="n">ActualTestCase</span><span·class="p"·data-group-id="0166294005-31">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 187 | ····</span><span·class="p"·data-group-id=" | 187 | ····</span><span·class="p"·data-group-id="0166294005-32">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Peer</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Node</span><span·class="p"·data-group-id="0166294005-32">}</span><sp[·...·truncated·by·diffoscope;·len:·635,·SHA:·5dd5066bfd119f35cf027e53e81ddfb8df1c299ab14e817fed80fe9f60095736·...·]-33">)</span><span·class="p">,</span><span·class="w"> |
| 188 | ····</span><span·class="c1">%%·extra·setup·needed·for·multiple·test·cases</span><span·class="w"> | 188 | ····</span><span·class="c1">%%·extra·setup·needed·for·multiple·test·cases</span><span·class="w"> |
| 189 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">rpc</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id=" | 189 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">rpc</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id="0166294005-36">(</span><span·class="n">Node</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">application</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">set_env</span><span·class="p">,</span><span·class="w">·</s[·...·truncated·by·diffoscope;·len:·335,·SHA:·764ac2aaa838c1251004d10ffab6d7adb0377cc7b27beb8f5ff8b99e4fc41682·...·]-36">)</span><span·class="p">,</span><span·class="w"> |
| 190 | ····</span><span·class="n">Peer</span><span·class="p">.</span><span·class="w"> | 190 | ····</span><span·class="n">Peer</span><span·class="p">.</span><span·class="w"> |
| 191 | </span><span·class="nf">restart_node</span><span·class="p"·data-group-id=" | 191 | </span><span·class="nf">restart_node</span><span·class="p"·data-group-id="0166294005-38">(</span><span·class="n">Config</span><span·class="p"·data-group-id="0166294005-38">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_list</span><span·class="p"·data-group-id="0166294005-39[·...·truncated·by·diffoscope;·len:·80,·SHA:·c5973663ecf4f63e35c2f6cadbba3e23dd2fd73dd45095fc925a00a844ddb6c7·...·]-39">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 192 | ····</span><span·class="n">Name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">?</span><span·class="n">CT_PEER_NAME</span><span·class="p"·data-group-id=" | 192 | ····</span><span·class="n">Name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">?</span><span·class="n">CT_PEER_NAME</span><span·class="p"·data-group-id="0166294005-40">(</span><span·class="p"·data-group-id="0166294005-40">)</span><span·class="p">,</span><span·class="w"> |
| 193 | ····</span><span·class="p"·data-group-id=" | 193 | ····</span><span·class="p"·data-group-id="0166294005-41">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Peer</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Node</span><span·class="p"·data-group-id="0166294005-41">}</span><sp[·...·truncated·by·diffoscope;·len:·458,·SHA:·6377a934b96cddfadae5d2a469d6f5a772358f260d6e4d9b88cf1faa142d2437·...·]-42">)</span><span·class="p">,</span><span·class="w"> |
| 194 | ····</span><span·class="nc">peer</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id=" | 194 | ····</span><span·class="nc">peer</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id="0166294005-44">(</span><span·class="n">Peer</span><span·class="p"·data-group-id="0166294005-44">)</span><span·class="p">,</span><span·class="w"> |
| 195 | ····</span><span·class="c1">%%·restart·the·node·with·the·same·name·as·before</span><span·class="w"> | 195 | ····</span><span·class="c1">%%·restart·the·node·with·the·same·name·as·before</span><span·class="w"> |
| 196 | ····</span><span·class="p"·data-group-id=" | 196 | ····</span><span·class="p"·data-group-id="0166294005-45">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Peer2</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Node</span><span·class="p"·data-group-id="0166294005-45">}</span><s[·...·truncated·by·diffoscope;·len:·758,·SHA:·92c937d79de0bd82f566eaf059130c3464b5543684b9a7631e741677099c6124·...·]-46">)</span><span·class="p">,</span><span·class="w"> |
| 197 | ····</span><span·class="nc">peer</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id="8932222463-49">(</span><span·class="n">Peer2</span><span·class="p"·data-group-id="8932222463-49">)</span><span·class="p">.</span></code></pre><p>The·next·example·demonstrates·how·to·start·multiple·nodes·concurrently:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">multi_node</span><span·class="p"·data-group-id="1277728651-1">(</span><span·class="n">Config</span><span·class="p"·data-group-id="1277728651-1">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_list</span><span·class="p"·data-group-id="1277728651-2">(</span><span·class="n">Config</span><span·class="p"·data-group-id="1277728651-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | ||
| 198 | ····</span><span·class="n"> | 197 | ····</span><span·class="nc">peer</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id="0166294005-49">(</span><span·class="n">Peer2</span><span·class="p"·data-group-id="0166294005-49">)</span><span·class="p">.</span></code></pre><p>The·next·examp[·...·truncated·by·diffoscope;·len:·564,·SHA:·babb8ab54c13d2fe64f47fab40e43d53a27e404a64f1d080fb880d38a5519cd1·...·]</span><span·class="w"> |
| 198 | ····</span><span·class="n">Peers</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6391572784-3">[</span><span·class="o">?</span><span·class="n">CT_PEER</span><span·class="p"·data-group-id="6391572784-4">(</span><span·class="p"·data-group-id="6391572784-5">#{</span><span·class="ss">wait_boot</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="6391572784-6">{</span><span·class="nf">self</span><span·class="p"·data-group-id="6391572784-7">(</span><span·class="p"·data-group-id="6391572784-7">)</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">tag</span><span·class="p"·data-group-id="6391572784-6">}</span><span·class="p"·data-group-id="6391572784-5">}</span><span·class="p"·data-group-id="6391572784-4">)</span><span·class="w"> | ||
| 199 | ········</span><span·class="p">||</span><span·class="w">·</span><span·class="p">_</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">seq</span><span·class="p"·data-group-id=" | 199 | ········</span><span·class="p">||</span><span·class="w">·</span><span·class="p">_</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">seq</span><span·class="p"·data-group-id="6391572784-8">(</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">4</span><span·class="p"·data-group-id="6391572784-8">)</span><span·class="p"·data-group-id="6391572784-3">]</span><span·class="p">,</span><span·class="w"> |
| 200 | ····</span><span·class="c1">%%·wait·for·all·nodes·to·complete·boot·process,·get·their·names:</span><span·class="w"> | 200 | ····</span><span·class="c1">%%·wait·for·all·nodes·to·complete·boot·process,·get·their·names:</span><span·class="w"> |
| 201 | ····</span><span·class="p">_</span><span·class="n">Nodes</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 201 | ····</span><span·class="p">_</span><span·class="n">Nodes</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="6391572784-9">[</span><span·class="k">receive</span><span·class="w">·</span><span·class="p"·data-group-id="6391572784-10">{</span><span·class="ss">tag</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6391572784-11">{</sp[·...·truncated·by·diffoscope;·len:·279,·SHA:·827e7cdda66f2baa7d0e4f59ce0ec87726253e06ac3136fc6796725d360a5c5d·...·]-10">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Node</span><span·class="w">·</span><span·class="k">end</span><span·class="w"> |
| 202 | ········</span><span·class="p">||</span><span·class="w">·</span><span·class="p"·data-group-id=" | 202 | ········</span><span·class="p">||</span><span·class="w">·</span><span·class="p"·data-group-id="6391572784-12">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Peer</span><span·class="p"·data-group-id="6391572784-12">}</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><s[·...·truncated·by·diffoscope;·len:·67,·SHA:·6a770945ddfb8b7933e40a49dfb4a54e93f91629a07656e287f6ceb05d9dbf48·...·]-9">]</span><span·class="p">,</span><span·class="w"> |
| 203 | ····</span><span·class="p"·data-group-id=" | 203 | ····</span><span·class="p"·data-group-id="6391572784-13">[</span><span·class="nc">peer</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id="6391572784-14">(</span><span·class="n">Peer</span><span·class="p"·data-group-id="6391572784-14">)</span><span·class="w">·<[·...·truncated·by·diffoscope;·len:·409,·SHA:·c89edd790b6dc0a9272fdf41e53143df1c34dc356ada882c088acaba094c9179·...·]-13">]</span><span·class="p">.</span></code></pre><p>Start·a·peer·on·a·different·host.·Requires·<code·class="inline">ssh</code>·key-based·authentication·set |
| 204 | up,·allowing·"another_host"·connection·without·password·prompt.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Ssh</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">os</span><span·class="p">:</span><span·class="nf">find_executable</span><span·class="p"·data-group-id=" | 204 | up,·allowing·"another_host"·connection·without·password·prompt.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Ssh</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">os</span><span·class="p">:</span><span·class="nf">find_executable</span><span·class="p"·data-group-id="6058354819-1">(</span><span·class="s">"ssh"</span><span·class="p"·data-group-id="6058354819-1">)</span><span·class="p">,</span><span·class="w"> |
| 205 | </span><span·class="nc">peer</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 205 | </span><span·class="nc">peer</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id="6058354819-2">(</span><span·class="p"·data-group-id="6058354819-3">#{</span><span·class="ss">exec</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="6058354819-4">{</span><span·class="n">Ssh</sp[·...·truncated·by·diffoscope;·len:·331,·SHA:·e0b34fd09d8b0a090632359cb59079f44507f4b7b73aa13cc9bc201277054b89·...·]-4">}</span><span·class="p">,</span><span·class="w"> |
| 206 | ····</span><span·class="ss">connection</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">standard_io</span><span·class="p"·data-group-id=" | 206 | ····</span><span·class="ss">connection</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">standard_io</span><span·class="p"·data-group-id="6058354819-3">}</span><span·class="p"·data-group-id="6058354819-2">)</span><span·class="p">,</span></code></pre><p>The·following·Common·Test·case·demonstrates·Docker·integration,·starting·two |
| 207 | containers·with·hostnames·"one"·and·"two".·In·this·example·Erlang·nodes·running | 207 | containers·with·hostnames·"one"·and·"two".·In·this·example·Erlang·nodes·running |
| 208 | inside·containers·form·an·Erlang·cluster.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">docker</span><span·class="p"·data-group-id=" | 208 | inside·containers·form·an·Erlang·cluster.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">docker</span><span·class="p"·data-group-id="2990695799-1">(</span><span·class="n">Config</span><span·class="p"·data-group-id="2990695799-1">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">is_list</span><span·class="p"·data-group-id="2990695799-2">([·...·truncated·by·diffoscope;·len:·77,·SHA:·f78976047c917429a1cbc4c63956ed9c865336ccafdefefb20d4a3c2d6594cb4·...·]-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 209 | ····</span><span·class="n">Docker</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">os</span><span·class="p">:</span><span·class="nf">find_executable</span><span·class="p"·data-group-id=" | 209 | ····</span><span·class="n">Docker</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">os</span><span·class="p">:</span><span·class="nf">find_executable</span><span·class="p"·data-group-id="2990695799-3">(</span><span·class="s">"docker"</span><span·class="p"·data-group-id="2990695799-3">)</span><span·class="p">,</span><span·class="w"> |
| 210 | ····</span><span·class="n">PrivDir</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id=" | 210 | ····</span><span·class="n">PrivDir</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">proplists</span><span·class="p">:</span><span·class="nf">get_value</span><span·class="p"·data-group-id="2990695799-4">(</span><span·class="ss">priv_dir</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Config</span><span·class="p"·data-group-id="2990695799-4">)</span><span·class="p">,</span><span·class="w"> |
| 211 | ····</span><span·class="nf">build_release</span><span·class="p"·data-group-id=" | 211 | ····</span><span·class="nf">build_release</span><span·class="p"·data-group-id="2990695799-5">(</span><span·class="n">PrivDir</span><span·class="p"·data-group-id="2990695799-5">)</span><span·class="p">,</span><span·class="w"> |
| 212 | ····</span><span·class="nf">build_image</span><span·class="p"·data-group-id=" | 212 | ····</span><span·class="nf">build_image</span><span·class="p"·data-group-id="2990695799-6">(</span><span·class="n">PrivDir</span><span·class="p"·data-group-id="2990695799-6">)</span><span·class="p">,</span><span·class="w"> |
| 213 | ····</span><span·class="c1">%%·start·two·Docker·containers</span><span·class="w"> | 213 | ····</span><span·class="c1">%%·start·two·Docker·containers</span><span·class="w"> |
| 214 | ····</span><span·class="p"·data-group-id=" | 214 | ····</span><span·class="p"·data-group-id="2990695799-7">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Peer</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Node</span><span·class="p"·data-group-id="2990695799-7">}</span><span[·...·truncated·by·diffoscope;·len:·247,·SHA:·9b6f9542f3fb24a6ced112bf5a2528bd23cfaf781a807720dfee95783d3e2669·...·]-9">#{</span><span·class="ss">name</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">lambda</span><span·class="p">,</span><span·class="w"> |
| 215 | ········</span><span·class="ss">connection</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">standard_io</span><span·class="p">,</span><span·class="w"> | 215 | ········</span><span·class="ss">connection</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">standard_io</span><span·class="p">,</span><span·class="w"> |
| 216 | ········</span><span·class="ss">exec</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 216 | ········</span><span·class="ss">exec</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="2990695799-10">{</span><span·class="n">Docker</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2990695799-11">[</span><span·class="s">"run"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">[·...·truncated·by·diffoscope;·len:·483,·SHA:·5f94211591fea62ff2d22cb4a65ba930aa03eb724c89532d0b9fe18717921aeb·...·]-8">)</span><span·class="p">,</span><span·class="w"> |
| 217 | ····</span><span·class="p"·data-group-id=" | 217 | ····</span><span·class="p"·data-group-id="2990695799-12">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Peer2</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Node2</span><span·class="p"·data-group-id="2990695799-12">}</span><[·...·truncated·by·diffoscope;·len:·252,·SHA:·528d5dca1927fac3132e8dc5803a7395070877e29539e61cee9bb81eb6b288de·...·]-14">#{</span><span·class="ss">name</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">lambda</span><span·class="p">,</span><span·class="w"> |
| 218 | ········</span><span·class="ss">connection</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">standard_io</span><span·class="p">,</span><span·class="w"> | 218 | ········</span><span·class="ss">connection</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">standard_io</span><span·class="p">,</span><span·class="w"> |
| 219 | ········</span><span·class="ss">exec</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 219 | ········</span><span·class="ss">exec</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="2990695799-15">{</span><span·class="n">Docker</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2990695799-16">[</span><span·class="s">"run"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">[·...·truncated·by·diffoscope;·len:·484,·SHA:·a8f46609c3472002892df6f119bbd1efc89f328c534df2015cbfcdf474ce0535·...·]-13">)</span><span·class="p">,</span><span·class="w"> |
| 220 | ····</span><span·class="c1">%%·find·IP·address·of·the·second·node·using·alternative·connection·RPC</span><span·class="w"> | 220 | ····</span><span·class="c1">%%·find·IP·address·of·the·second·node·using·alternative·connection·RPC</span><span·class="w"> |
| 221 | ····</span><span·class="p"·data-group-id=" | 221 | ····</span><span·class="p"·data-group-id="2990695799-17">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ips</span><span·class="p"·data-group-id="2990695799-17">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·c[·...·truncated·by·diffoscope;·len:·510,·SHA:·2f7b3953bad82537303ff9cfbfda30ed48993ac80286fb56b58c72d86d59c5df·...·]-18">)</span><span·class="p">,</span><span·class="w"> |
| 222 | ····</span><span·class="p"·data-group-id=" | 222 | ····</span><span·class="p"·data-group-id="2990695799-20">{</span><span·class="s">"eth0"</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Eth0</span><span·class="p"·data-group-id="2990695799-20">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·[·...·truncated·by·diffoscope;·len:·372,·SHA:·44d667d7cdd7ef4d88c46fd79c424cdd4275e663164935c3f9b0264657bfae77·...·]-21">)</span><span·class="p">,</span><span·class="w"> |
| 223 | ····</span><span·class="p"·data-group-id=" | 223 | ····</span><span·class="p"·data-group-id="2990695799-22">{</span><span·class="ss">addr</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ip</span><span·class="p"·data-group-id="2990695799-22">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·[·...·truncated·by·diffoscope;·len:·349,·SHA:·3c02d36a9007764a2079c2b67ac90e58bb61c8d193d2f185ce3fccf0ba4ee1f4·...·]-23">)</span><span·class="p">,</span><span·class="w"> |
| 224 | ····</span><span·class="c1">%%·make·first·node·to·discover·second·one</span><span·class="w"> | 224 | ····</span><span·class="c1">%%·make·first·node·to·discover·second·one</span><span·class="w"> |
| 225 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">peer</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id=" | 225 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">peer</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id="2990695799-24">(</span><span·class="n">Peer</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">inet_db</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">set_lookup</span><span·class="p">,</span><span·class="w">·</sp[·...·truncated·by·diffoscope;·len:·288,·SHA:·dd28744c8dce60d2daf2fb95143e1a58565f50fd247493bea709e097790f68d4·...·]-24">)</span><span·class="p">,</span><span·class="w"> |
| 226 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">peer</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id=" | 226 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">peer</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id="2990695799-27">(</span><span·class="n">Peer</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">inet_db</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">add_host</span><span·class="p">,</span><span·class="w">·</span[·...·truncated·by·diffoscope;·len:·369,·SHA:·45bfeb3da9827cbf139f599b1f16dbbb73aa6705ee180d57a9660807bc71fadb·...·]-27">)</span><span·class="p">,</span><span·class="w"> |
| 227 | ····</span><span·class="c1">%%·join·a·cluster</span><span·class="w"> | 227 | ····</span><span·class="c1">%%·join·a·cluster</span><span·class="w"> |
| 228 | ····</span><span·class="ss">true</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">peer</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id=" | 228 | ····</span><span·class="ss">true</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">peer</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id="2990695799-30">(</span><span·class="n">Peer</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">net_kernel</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">connect_node</span><span·class="p">,</span><span·class="w">[·...·truncated·by·diffoscope;·len:·185,·SHA:·a06e3f63eb776f0f79595cd21277f81bb3da962a0243707895f679b27933d8b3·...·]-30">)</span><span·class="p">,</span><span·class="w"> |
| 229 | ····</span><span·class="c1">%%·verify·that·second·peer·node·has·only·the·first·node·visible</span><span·class="w"> | 229 | ····</span><span·class="c1">%%·verify·that·second·peer·node·has·only·the·first·node·visible</span><span·class="w"> |
| 230 | ····</span><span·class="p"·data-group-id=" | 230 | ····</span><span·class="p"·data-group-id="2990695799-32">[</span><span·class="n">Node</span><span·class="p"·data-group-id="2990695799-32">]</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">peer</span><span·class="p">:</span><span·class="nf">call</span>[·...·truncated·by·diffoscope;·len:·434,·SHA:·2f2757b04e6674352e0ba6ec44a6ca93eb1032f45fa6d28b4012b8a002812cd8·...·]-33">)</span><span·class="p">,</span><span·class="w"> |
| 231 | ····</span><span·class="c1">%%·stop·peers,·causing·containers·to·also·stop</span><span·class="w"> | 231 | ····</span><span·class="c1">%%·stop·peers,·causing·containers·to·also·stop</span><span·class="w"> |
| 232 | ····</span><span·class="nc">peer</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id=" | 232 | ····</span><span·class="nc">peer</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id="2990695799-35">(</span><span·class="n">Peer2</span><span·class="p"·data-group-id="2990695799-35">)</span><span·class="p">,</span><span·class="w"> |
| 233 | ····</span><span·class="nc">peer</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id=" | 233 | ····</span><span·class="nc">peer</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id="2990695799-36">(</span><span·class="n">Peer</span><span·class="p"·data-group-id="2990695799-36">)</span><span·class="p">.</span><span·class="w"> |
| 234 | </span><span·class="nf">build_release</span><span·class="p"·data-group-id=" | 234 | </span><span·class="nf">build_release</span><span·class="p"·data-group-id="2990695799-37">(</span><span·class="n">Dir</span><span·class="p"·data-group-id="2990695799-37">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 235 | ····</span><span·class="c1">%%·load·sasl.app·file,·otherwise·application:get_key·will·fail</span><span·class="w"> | 235 | ····</span><span·class="c1">%%·load·sasl.app·file,·otherwise·application:get_key·will·fail</span><span·class="w"> |
| 236 | ····</span><span·class="nc">application</span><span·class="p">:</span><span·class="nf">load</span><span·class="p"·data-group-id=" | 236 | ····</span><span·class="nc">application</span><span·class="p">:</span><span·class="nf">load</span><span·class="p"·data-group-id="2990695799-38">(</span><span·class="ss">sasl</span><span·class="p"·data-group-id="2990695799-38">)</span><span·class="p">,</span><span·class="w"> |
| 237 | ····</span><span·class="c1">%%·create·*.rel·-·release·file</span><span·class="w"> | 237 | ····</span><span·class="c1">%%·create·*.rel·-·release·file</span><span·class="w"> |
| 238 | ····</span><span·class="n">RelFile</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">join</span><span·class="p"·data-group-id=" | 238 | ····</span><span·class="n">RelFile</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">join</span><span·class="p"·data-group-id="2990695799-39">(</span><span·class="n">Dir</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"lambda.rel"</span><span·class="p"·data-group-id="2990695799-39">)</span><span·class="p">,</span><span·class="w"> |
| 239 | ····</span><span·class="n">Release</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 239 | ····</span><span·class="n">Release</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="2990695799-40">{</span><span·class="ss">release</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2990695799-41">{</span><span·class="s">"lambda"</span><span·class="p">,</span><span·class="w">·</span><span·class[·...·truncated·by·diffoscope;·len:·70,·SHA:·1107d2ba5398172e2d4655c0736882d2fbd005f76fcb5bd763f4e7ac1223eea4·...·]-41">}</span><span·class="p">,</span><span·class="w"> |
| 240 | ········</span><span·class="p"·data-group-id=" | 240 | ········</span><span·class="p"·data-group-id="2990695799-42">{</span><span·class="ss">erts</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">system_info</span><span·class="p"·data-group-id="2990695799-43">(</span><span·class="s[·...·truncated·by·diffoscope;·len:·112,·SHA:·0c6681762131a36df41234bbd1d1f81a489d7c0a5a49d5dce039aecba80b938a·...·]-42">}</span><span·class="p">,</span><span·class="w"> |
| 241 | ········</span><span·class="p"·data-group-id=" | 241 | ········</span><span·class="p"·data-group-id="2990695799-44">[</span><span·class="p"·data-group-id="2990695799-45">{</span><span·class="n">App</span><span·class="p">,</span><span·class="w">·</span><span·class="k">begin</span><span·class="w">·</span><span·class="p"·data-group-id="2990695799-46">{</span[·...·truncated·by·diffoscope;·len:·691,·SHA:·f273e4405fc35db65e012a689e8f3afaa061cb1ba73cb40ed6d7be8e595a3b40·...·]-45">}</span><span·class="w"> |
| 242 | ············</span><span·class="p">||</span><span·class="w">·</span><span·class="n">App</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="p"·data-group-id=" | 242 | ············</span><span·class="p">||</span><span·class="w">·</span><span·class="n">App</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="p"·data-group-id="2990695799-48">[</span><span·class="ss">kernel</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">stdlib</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">sasl</span><span·class="p"·data-group-id="2990695799-48">]</[·...·truncated·by·diffoscope;·len:·100,·SHA:·87def3bb54869a4b9e8a0442ce65c613211a51c450dd20bc0c6ecbb508bce3f1·...·]-40">}</span><span·class="p">,</span><span·class="w"> |
| 243 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">write_file</span><span·class="p"·data-group-id=" | 243 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">write_file</span><span·class="p"·data-group-id="2990695799-49">(</span><span·class="n">RelFile</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">list_to_binary</span><span·class="p"·data-group-id="2990695799-50">(</span><span·class="nc">lists</span><span·class="p">:</span><span·clas[·...·truncated·by·diffoscope;·len:·62,·SHA:·584ba2e3a0b4a13e89a91fe737d7231f23b102deb59850fa0f5e8cb2ae3a7283·...·]-51">(</span><span·class="w"> |
| 244 | ········</span><span·class="nc">io_lib</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 244 | ········</span><span·class="nc">io_lib</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="2990695799-52">(</span><span·class="s">"~tp."</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2990695799-53">[</span><span·class="n">Release</span><span·class="p"·data-group-id="2990695799-53">]</span><span·cl[·...·truncated·by·diffoscope;·len:·195,·SHA:·9d0376e069dbd7fcb135f9becfe95e7a9e79d839dc6d2016ba5ac6743e0f8b65·...·]-49">)</span><span·class="p">,</span><span·class="w"> |
| 245 | ····</span><span·class="n">RelFileNoExt</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">join</span><span·class="p"·data-group-id=" | 245 | ····</span><span·class="n">RelFileNoExt</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">join</span><span·class="p"·data-group-id="2990695799-54">(</span><span·class="n">Dir</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"lambda"</span><span·class="p"·data-group-id="2990695799-54">)</span><span·class="p">,</span><span·class="w"> |
| 246 | ····</span><span·class="c1">%%·create·boot·script</span><span·class="w"> | 246 | ····</span><span·class="c1">%%·create·boot·script</span><span·class="w"> |
| 247 | ····</span><span·class="p"·data-group-id=" | 247 | ····</span><span·class="p"·data-group-id="2990695799-55">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">systools_make</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2990695799-56">[</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·292,·SHA:·0f872e33bb79cd6082b2b69e4877be3240640f2ddcd972a8ca98d6cabeca052d·...·]-57">(</span><span·class="n">RelFileNoExt</span><span·class="p">,</span><span·class="w"> |
| 248 | ········</span><span·class="p"·data-group-id=" | 248 | ········</span><span·class="p"·data-group-id="2990695799-58">[</span><span·class="ss">silent</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2990695799-59">{</span><span·class="ss">outdir</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Dir</sp[·...·truncated·by·diffoscope;·len:·152,·SHA:·243fea7339582e28b4fbc25def1b48e9bc2943449e19bbb5a1c8b651b5b5239a·...·]-57">)</span><span·class="p">,</span><span·class="w"> |
| 249 | ····</span><span·class="c1">%%·package·release·into·*.tar.gz</span><span·class="w"> | 249 | ····</span><span·class="c1">%%·package·release·into·*.tar.gz</span><span·class="w"> |
| 250 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">systools</span><span·class="p">:</span><span·class="nf">make_tar</span><span·class="p"·data-group-id=" | 250 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">systools</span><span·class="p">:</span><span·class="nf">make_tar</span><span·class="p"·data-group-id="2990695799-60">(</span><span·class="n">RelFileNoExt</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="2990695799-61">[</span><span·class="p"·data-group-id="2990695799-62">{</span><span·class="ss">erts</span><span·class="p[·...·truncated·by·diffoscope;·len:·375,·SHA:·9531c8f68b3ed7f58be79543b1990ff9490aae6bec0d4e83375f222f84aec785·...·]-60">)</span><span·class="p">.</span><span·class="w"> |
| 251 | </span><span·class="nf">build_image</span><span·class="p"·data-group-id=" | 251 | </span><span·class="nf">build_image</span><span·class="p"·data-group-id="2990695799-64">(</span><span·class="n">Dir</span><span·class="p"·data-group-id="2990695799-64">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 252 | ····</span><span·class="c1">%%·Create·Dockerfile·example,·working·only·for·Ubuntu·20.04</span><span·class="w"> | 252 | ····</span><span·class="c1">%%·Create·Dockerfile·example,·working·only·for·Ubuntu·20.04</span><span·class="w"> |
| 253 | ····</span><span·class="c1">%%·Expose·port·4445,·and·make·Erlang·distribution·to·listen</span><span·class="w"> | 253 | ····</span><span·class="c1">%%·Expose·port·4445,·and·make·Erlang·distribution·to·listen</span><span·class="w"> |
| 254 | ····</span><span·class="c1">%%··on·this·port,·and·connect·to·it·without·EPMD</span><span·class="w"> | 254 | ····</span><span·class="c1">%%··on·this·port,·and·connect·to·it·without·EPMD</span><span·class="w"> |
| 255 | ····</span><span·class="c1">%%·Set·cookie·on·both·nodes·to·be·the·same.</span><span·class="w"> | 255 | ····</span><span·class="c1">%%·Set·cookie·on·both·nodes·to·be·the·same.</span><span·class="w"> |
| 256 | ····</span><span·class="n">BuildScript</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">join</span><span·class="p"·data-group-id=" | 256 | ····</span><span·class="n">BuildScript</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">filename</span><span·class="p">:</span><span·class="nf">join</span><span·class="p"·data-group-id="2990695799-65">(</span><span·class="n">Dir</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"Dockerfile"</span><span·class="p"·data-group-id="2990695799-65">)</span><span·class="p">,</span><span·class="w"> |
| 257 | ····</span><span·class="n">Dockerfile</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 257 | ····</span><span·class="n">Dockerfile</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 258 | ······</span><span·class="s">"FROM·ubuntu:20.04·as·runner\n"</span><span·class="w"> | 258 | ······</span><span·class="s">"FROM·ubuntu:20.04·as·runner\n"</span><span·class="w"> |
| 259 | ······</span><span·class="s">"EXPOSE·4445\n"</span><span·class="w"> | 259 | ······</span><span·class="s">"EXPOSE·4445\n"</span><span·class="w"> |
| 260 | ······</span><span·class="s">"WORKDIR·/opt/lambda\n"</span><span·class="w"> | 260 | ······</span><span·class="s">"WORKDIR·/opt/lambda\n"</span><span·class="w"> |
| 261 | ······</span><span·class="s">"COPY·lambda.tar.gz·/tmp\n"</span><span·class="w"> | 261 | ······</span><span·class="s">"COPY·lambda.tar.gz·/tmp\n"</span><span·class="w"> |
| 262 | ······</span><span·class="s">"RUN·tar·-zxvf·/tmp/lambda.tar.gz·-C·/opt/lambda\n"</span><span·class="w"> | 262 | ······</span><span·class="s">"RUN·tar·-zxvf·/tmp/lambda.tar.gz·-C·/opt/lambda\n"</span><span·class="w"> |
| 263 | ······</span><span·class="s">"ENTRYPOINT·[\"/opt/lambda/erts-"</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">system_info</span><span·class="p"·data-group-id=" | 263 | ······</span><span·class="s">"ENTRYPOINT·[\"/opt/lambda/erts-"</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">system_info</span><span·class="p"·data-group-id="2990695799-66">(</span><span·class="ss">version</span><span·class="p"·data-group-id="2990695799-66">)</span><span·class="w">·</span><span·class="o">++</span><span·class="w"> |
| 264 | ······</span><span·class="s">"/bin/dyn_erl\",·\"-boot\",·\"/opt/lambda/releases/1.0.0/start\","</span><span·class="w"> | 264 | ······</span><span·class="s">"/bin/dyn_erl\",·\"-boot\",·\"/opt/lambda/releases/1.0.0/start\","</span><span·class="w"> |
| 265 | ······</span><span·class="s">"·\"-kernel\",·\"inet_dist_listen_min\",·\"4445\","</span><span·class="w"> | 265 | ······</span><span·class="s">"·\"-kernel\",·\"inet_dist_listen_min\",·\"4445\","</span><span·class="w"> |
| 266 | ······</span><span·class="s">"·\"-erl_epmd_port\",·\"4445\","</span><span·class="w"> | 266 | ······</span><span·class="s">"·\"-erl_epmd_port\",·\"4445\","</span><span·class="w"> |
| 267 | ······</span><span·class="s">"·\"-setcookie\",·\"secret\"]\n"</span><span·class="p">,</span><span·class="w"> | 267 | ······</span><span·class="s">"·\"-setcookie\",·\"secret\"]\n"</span><span·class="p">,</span><span·class="w"> |
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| Offset 969, 29 lines modified | Offset 969, 29 lines modified | ||
| 969 | the·start·function·used.</p><p>If·neither·this·function·nor·<a·href="#init_fail/3"><code·class="inline">init_fail/2,3</code></a>·is·called·by·the | 969 | the·start·function·used.</p><p>If·neither·this·function·nor·<a·href="#init_fail/3"><code·class="inline">init_fail/2,3</code></a>·is·called·by·the |
| 970 | started·process,·the·start·function·returns·an·error·tuple·when·the·started | 970 | started·process,·the·start·function·returns·an·error·tuple·when·the·started |
| 971 | process·exits,·or·when·the·start·function·time-out·(if·used)·has·passed,·see | 971 | process·exits,·or·when·the·start·function·time-out·(if·used)·has·passed,·see |
| 972 | <a·href="#start/5"><code·class="inline">start/3,4,5</code></a>.</p><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>Do·not·use·this·function·to·return·an·error·indicating·that·the·process·start | 972 | <a·href="#start/5"><code·class="inline">start/3,4,5</code></a>.</p><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>Do·not·use·this·function·to·return·an·error·indicating·that·the·process·start |
| 973 | failed.·When·doing·so·the·start·function·can·return·before·the·failing·process | 973 | failed.·When·doing·so·the·start·function·can·return·before·the·failing·process |
| 974 | has·exited,·which·may·block·VM·resources·required·for·a·new·start·attempt·to | 974 | has·exited,·which·may·block·VM·resources·required·for·a·new·start·attempt·to |
| 975 | succeed.·Use·<a·href="#init_fail/3"><code·class="inline">init_fail/2,3</code></a>·for·that·purpose.</p></section><p>The·following·example·illustrates·how·this·function·and·<a·href="#start_link/3"><code·class="inline">proc_lib:start_link/3</code></a> | 975 | succeed.·Use·<a·href="#init_fail/3"><code·class="inline">init_fail/2,3</code></a>·for·that·purpose.</p></section><p>The·following·example·illustrates·how·this·function·and·<a·href="#start_link/3"><code·class="inline">proc_lib:start_link/3</code></a> |
| 976 | are·used:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 976 | are·used:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="8905677768-1">(</span><span·class="ss">my_proc</span><span·class="p"·data-group-id="8905677768-1">)</span><span·class="p">.</span><span·class="w"> |
| 977 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="9999374243-2">(</span><span·class="p"·data-group-id="9999374243-3">[</span><span·class="ss">start_link</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data-group-id="9999374243-3">]</span><span·class="p"·data-group-id="9999374243-2">)</span><span·class="p">.</span><span·class="w"> | ||
| 978 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 977 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="8905677768-2">(</span><span·class="p"·data-group-id="8905677768-3">[</span><span·class="ss">start_link</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data-group-id="8905677768-3">]</span><span·class="p"·data-group-id="8905677768-2">)</span><span·class="p">.</span><span·class="w"> |
| 978 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="8905677768-4">(</span><span·class="p"·data-group-id="8905677768-5">[</span><span·class="ss">init</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id="8905677768-5">]</span><span·class="p"·data-group-id="8905677768-4">)</span><span·class="p">.</span><span·class="w"> | ||
| 979 | </span><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 979 | </span><span·class="nf">start_link</span><span·class="p"·data-group-id="8905677768-6">(</span><span·class="p"·data-group-id="8905677768-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 980 | ····</span><span·class="nc">proc_lib</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 980 | ····</span><span·class="nc">proc_lib</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id="8905677768-7">(</span><span·class="ss">my_proc</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">init</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8905677768-8">[</span><span·class="nf">self</spa[·...·truncated·by·diffoscope;·len:·202,·SHA:·69762684719b3ba23e2ff02cef3fb3525f833ff2393d3b33410f5541443d89ff·...·]-7">)</span><span·class="p">.</span><span·class="w"> |
| 981 | </span><span·class="nf">init</span><span·class="p"·data-group-id=" | 981 | </span><span·class="nf">init</span><span·class="p"·data-group-id="8905677768-10">(</span><span·class="n">Parent</span><span·class="p"·data-group-id="8905677768-10">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 982 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">do_initialization</span><span·class="p"·data-group-id=" | 982 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">do_initialization</span><span·class="p"·data-group-id="8905677768-11">(</span><span·class="p"·data-group-id="8905677768-11">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 983 | ········</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 983 | ········</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 984 | ············</span><span·class="nc">proc_lib</span><span·class="p">:</span><span·class="nf">init_ack</span><span·class="p"·data-group-id=" | 984 | ············</span><span·class="nc">proc_lib</span><span·class="p">:</span><span·class="nf">init_ack</span><span·class="p"·data-group-id="8905677768-12">(</span><span·class="n">Parent</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8905677768-13">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">self</span>[·...·truncated·by·diffoscope;·len:·203,·SHA:·d7642dfa6992948431aae6acef5ff6e9c33a38ec4d4eb5a485efe5c552b4a770·...·]-12">)</span><span·class="p">;</span><span·class="w"> |
| 985 | ········</span><span·class="p"·data-group-id=" | 985 | ········</span><span·class="p"·data-group-id="8905677768-15">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="p"·data-group-id="8905677768-15">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 986 | ············</span><span·class="nf">exit</span><span·class="p"·data-group-id=" | 986 | ············</span><span·class="nf">exit</span><span·class="p"·data-group-id="8905677768-16">(</span><span·class="n">Reason</span><span·class="p"·data-group-id="8905677768-16">)</span><span·class="w"> |
| 987 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 987 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 988 | ····</span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 988 | ····</span><span·class="nf">loop</span><span·class="p"·data-group-id="8905677768-17">(</span><span·class="p"·data-group-id="8905677768-17">)</span><span·class="p">.</span><span·class="w"> |
| 989 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre> | 989 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre> |
| 990 | ··</section> | 990 | ··</section> |
| 991 | </section> | 991 | </section> |
| 992 | <section·class="detail"·id="init_fail/2"> | 992 | <section·class="detail"·id="init_fail/2"> |
| 993 | ··<div·class="detail-header"> | 993 | ··<div·class="detail-header"> |
| Offset 1052, 29 lines modified | Offset 1052, 29 lines modified | ||
| 1052 | to·<code·class="inline">Exception</code>.·The·start·function·then·returns·<code·class="inline">Ret</code>.</p><p>See·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#raise/3"><code·class="inline">erlang:raise/3</code></a>·for·a·description·of·<code·class="inline">Class</code>,·<code·class="inline">Reason</code>·and·<code·class="inline">Stacktrace</code>.</p><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>Do·not·consider·catching·the·exception·from·this·function.·That·would·defeat | 1052 | to·<code·class="inline">Exception</code>.·The·start·function·then·returns·<code·class="inline">Ret</code>.</p><p>See·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#raise/3"><code·class="inline">erlang:raise/3</code></a>·for·a·description·of·<code·class="inline">Class</code>,·<code·class="inline">Reason</code>·and·<code·class="inline">Stacktrace</code>.</p><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>Do·not·consider·catching·the·exception·from·this·function.·That·would·defeat |
| 1053 | its·purpose.·A·process·started·by·a·<a·href="#start/3"><code·class="inline">start[_link|_monitor]/3,4,5</code></a> | 1053 | its·purpose.·A·process·started·by·a·<a·href="#start/3"><code·class="inline">start[_link|_monitor]/3,4,5</code></a> |
| 1054 | function·should·end·in·a·value·(that·will·be·ignored)·or·an·exception·that | 1054 | function·should·end·in·a·value·(that·will·be·ignored)·or·an·exception·that |
| 1055 | will·be·handled·by·this·module.·See·<a·href="proc_lib.html">Description</a>.</p></section><p>If·neither·this·function·nor·<a·href="#init_ack/1"><code·class="inline">init_ack/1,2</code></a>·is·called·by·the | 1055 | will·be·handled·by·this·module.·See·<a·href="proc_lib.html">Description</a>.</p></section><p>If·neither·this·function·nor·<a·href="#init_ack/1"><code·class="inline">init_ack/1,2</code></a>·is·called·by·the |
| 1056 | started·process,·the·start·function·returns·an·error·tuple·when·the·started | 1056 | started·process,·the·start·function·returns·an·error·tuple·when·the·started |
| 1057 | process·exits,·or·when·the·start·function·time-out·(if·used)·has·passed,·see | 1057 | process·exits,·or·when·the·start·function·time-out·(if·used)·has·passed,·see |
| 1058 | <a·href="#start/3"><code·class="inline">start/3,4,5</code></a>.</p><p>The·following·example·illustrates·how·this·function·and·<a·href="#start_link/3"><code·class="inline">proc_lib:start_link/3</code></a> | 1058 | <a·href="#start/3"><code·class="inline">start/3,4,5</code></a>.</p><p>The·following·example·illustrates·how·this·function·and·<a·href="#start_link/3"><code·class="inline">proc_lib:start_link/3</code></a> |
| 1059 | can·be·used:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 1059 | can·be·used:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="4126961926-1">(</span><span·class="ss">my_proc</span><span·class="p"·data-group-id="4126961926-1">)</span><span·class="p">.</span><span·class="w"> |
| 1060 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 1060 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="4126961926-2">(</span><span·class="p"·data-group-id="4126961926-3">[</span><span·class="ss">start_link</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data-group-id="4126961926-3">]</span><span·class="p"·data-group-id="4126961926-2">)</span><span·class="p">.</span><span·class="w"> |
| 1061 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 1061 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="4126961926-4">(</span><span·class="p"·data-group-id="4126961926-5">[</span><span·class="ss">init</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id="4126961926-5">]</span><span·class="p"·data-group-id="4126961926-4">)</span><span·class="p">.</span><span·class="w"> |
| 1062 | </span><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 1062 | </span><span·class="nf">start_link</span><span·class="p"·data-group-id="4126961926-6">(</span><span·class="p"·data-group-id="4126961926-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1063 | ····</span><span·class="nc">proc_lib</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 1063 | ····</span><span·class="nc">proc_lib</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id="4126961926-7">(</span><span·class="ss">my_proc</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">init</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4126961926-8">[</span><span·class="nf">self</spa[·...·truncated·by·diffoscope;·len:·202,·SHA:·48f739726fa87a679cee8f79afee610e7971ab3695d72894b287a1c5eb0fa9c5·...·]-7">)</span><span·class="p">.</span><span·class="w"> |
| 1064 | </span><span·class="nf">init</span><span·class="p"·data-group-id=" | 1064 | </span><span·class="nf">init</span><span·class="p"·data-group-id="4126961926-10">(</span><span·class="n">Parent</span><span·class="p"·data-group-id="4126961926-10">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1065 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">do_initialization</span><span·class="p"·data-group-id=" | 1065 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nf">do_initialization</span><span·class="p"·data-group-id="4126961926-11">(</span><span·class="p"·data-group-id="4126961926-11">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 1066 | ········</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 1066 | ········</span><span·class="ss">ok</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1067 | ············</span><span·class="nc">proc_lib</span><span·class="p">:</span><span·class="nf">init_ack</span><span·class="p"·data-group-id=" | 1067 | ············</span><span·class="nc">proc_lib</span><span·class="p">:</span><span·class="nf">init_ack</span><span·class="p"·data-group-id="4126961926-12">(</span><span·class="n">Parent</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4126961926-13">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">self</span>[·...·truncated·by·diffoscope;·len:·203,·SHA:·d8b941b321fa4c5d7f0446435defa9ffecaaa3062e358615568858d01f8661ff·...·]-12">)</span><span·class="p">;</span><span·class="w"> |
| 1068 | ········</span><span·class="p"·data-group-id=" | 1068 | ········</span><span·class="p"·data-group-id="4126961926-15">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Reason</span><span·class="p"·data-group-id="4126961926-15">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Error</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1069 | ············</span><span·class="nc">proc_lib</span><span·class="p">:</span><span·class="nf">init_fail</span><span·class="p"·data-group-id=" | 1069 | ············</span><span·class="nc">proc_lib</span><span·class="p">:</span><span·class="nf">init_fail</span><span·class="p"·data-group-id="4126961926-16">(</span><span·class="n">Parent</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Error</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4126961926-17">{</span><span·class="nb">exit</spa[·...·truncated·by·diffoscope;·len:·175,·SHA:·3733fb1a89746c17de99776ddddf2894d20bcf8f9bfaca585f4dc0c627e1dbcc·...·]-16">)</span><span·class="w"> |
| 1070 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 1070 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 1071 | ····</span><span·class="nf">loop</span><span·class="p"·data-group-id=" | 1071 | ····</span><span·class="nf">loop</span><span·class="p"·data-group-id="4126961926-18">(</span><span·class="p"·data-group-id="4126961926-18">)</span><span·class="p">.</span><span·class="w"> |
| 1072 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre> | 1072 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre> |
| 1073 | ··</section> | 1073 | ··</section> |
| 1074 | </section> | 1074 | </section> |
| 1075 | <section·class="detail"·id="initial_call/1"> | 1075 | <section·class="detail"·id="initial_call/1"> |
| 1076 | ··<div·class="detail-header"> | 1076 | ··<div·class="detail-header"> |
| Offset 522, 15 lines modified | Offset 522, 15 lines modified | ||
| 522 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·append_values(Key,·ListIn)·->·ListOut·when·Key·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>(),·ListIn·::·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>()],·ListOut·::·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>()].</pre> | 522 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·append_values(Key,·ListIn)·->·ListOut·when·Key·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>(),·ListIn·::·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>()],·ListOut·::·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>()].</pre> |
| 523 | ······</div> | 523 | ······</div> |
| 524 | <p>Similar·to·<a·href="#get_all_values/2"><code·class="inline">get_all_values/2</code></a>,·but·each·value·is·wrapped·in·a·list·unless·it·is | 524 | <p>Similar·to·<a·href="#get_all_values/2"><code·class="inline">get_all_values/2</code></a>,·but·each·value·is·wrapped·in·a·list·unless·it·is |
| 525 | already·itself·a·list.·The·resulting·list·of·lists·is·concatenated.·This·is | 525 | already·itself·a·list.·The·resulting·list·of·lists·is·concatenated.·This·is |
| 526 | often·useful·for·"incremental"·options.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">append_values</span><span·class="p"·data-group-id="6 | 526 | often·useful·for·"incremental"·options.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">append_values</span><span·class="p"·data-group-id="6839099577-1">(</span><span·class="ss">a</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6839099577-2">[</span><span·class="p"·data-group-id="6839099577-3">{</span><span·class="ss">a</span><span·class="p">,</span><span·c[·...·truncated·by·diffoscope;·len:·1836,·SHA:·3c94ecce5f35cec3f0a6d3961091feac6fcc372ed798048cf632cd14c5077666·...·]-1">]</span></code></pre> |
| 527 | ··</section> | 527 | ··</section> |
| 528 | </section> | 528 | </section> |
| 529 | <section·class="detail"·id="compact/1"> | 529 | <section·class="detail"·id="compact/1"> |
| 530 | ··<div·class="detail-header"> | 530 | ··<div·class="detail-header"> |
| 531 | ····<a·href="#compact/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 531 | ····<a·href="#compact/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 532 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 532 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 610, 18 lines modified | Offset 610, 18 lines modified | ||
| 610 | ······</div> | 610 | ······</div> |
| 611 | <p>Expands·particular·properties·to·corresponding·sets·of·properties·(or·other | 611 | <p>Expands·particular·properties·to·corresponding·sets·of·properties·(or·other |
| 612 | terms).</p><p>For·each·pair·<code·class="inline">{Property,·Expansion}</code>·in·<code·class="inline">Expansions</code>:·if·<code·class="inline">E</code>·is·the | 612 | terms).</p><p>For·each·pair·<code·class="inline">{Property,·Expansion}</code>·in·<code·class="inline">Expansions</code>:·if·<code·class="inline">E</code>·is·the |
| 613 | first·entry·in·<code·class="inline">ListIn</code>·with·the·same·key·as·<code·class="inline">Property</code>,·and·<code·class="inline">E</code>·and·<code·class="inline">Property</code> | 613 | first·entry·in·<code·class="inline">ListIn</code>·with·the·same·key·as·<code·class="inline">Property</code>,·and·<code·class="inline">E</code>·and·<code·class="inline">Property</code> |
| 614 | have·equivalent·normal·forms,·then·<code·class="inline">E</code>·is·replaced·with·the·terms·in | 614 | have·equivalent·normal·forms,·then·<code·class="inline">E</code>·is·replaced·with·the·terms·in |
| 615 | <code·class="inline">Expansion</code>,·and·any·following·entries·with·the·same·key·are·deleted·from | 615 | <code·class="inline">Expansion</code>,·and·any·following·entries·with·the·same·key·are·deleted·from |
| 616 | <code·class="inline">ListIn</code>.</p><p>For·example,·the·following·expressions·all·return·<code·class="inline">[fie,·bar,·baz,·fum]</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">expand</span><span·class="p"·data-group-id="4154405300-1">(</span><span·class="p"·data-group-id="4154405300-2">[</span><span·class="p"·data-group-id="4154405300-3">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4154405300-4">[</span><span·class="ss">bar</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">baz</span><span·class="p"·data-group-id="4154405300-4">]</span><span·class="p"·data-group-id="4154405300-3">}</span><span·class="p"·data-group-id="4154405300-2">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4154405300-5">[</span><span·class="ss">fie</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">fum</span><span·class="p"·data-group-id="4154405300-5">]</span><span·class="p"·data-group-id="4154405300-1">)</span><span·class="w"> | ||
| 617 | </span><span·class="nf">expand</span><span·class="p"·data-group-id="4154405300-6">(</span><span·class="p"·data-group-id="4154405300-7">[</span><span·class="p"·data-group-id="4154405300-8">{</span><span·class="p"·data-group-id="4154405300-9">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">true</span><span·class="p"·data-group-id="4154405300-9">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4154405300-10">[</span><span·class="ss">bar</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">baz</span><span·class="p"·data-group-id="4154405300-10">]</span><span·class="p"·data-group-id="4154405300-8">}</span><span·class="p"·data-group-id="4154405300-7">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4154405300-11">[</span><span·class="ss">fie</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">fum</span><span·class="p"·data-group-id="4154405300-11">]</span><span·class="p"·data-group-id="4154405300-6">)</span><span·class="w"> | ||
| 618 | </span><span·class="nf">expand</span><span·class="p"·data-group-id="4154405300-12">(</span><span·class="p"·data-group-id="4154405300-13">[</span><span·class="p"·data-group-id="4154405300-14">{</span><span·class="p"·data-group-id="4154405300-15">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">false</span><span·class="p"·data-group-id="4154405300-15">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4154405300-16">[</span><span·class="ss">bar</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">baz</span><span·class="p"·data-group-id="4154405300-16">]</span><span·class="p"·data-group-id="4154405300-14">}</span><span·class="p"·data-group-id="4154405300-13">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4154405300-17">[</span><span·class="ss">fie</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4154405300-18">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">false</span><span·class="p"·data-group-id="4154405300-18">}</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">fum</span><span·class="p"·data-group-id="4154405300-17">]</span><span·class="p"·data-group-id="4154405300-12">)</span></code></pre><p>However,·no·expansion·is·done·in·the·following·call·because·<code·class="inline">{foo,·false}</code> | ||
| 619 | 616 | <code·class="inline">ListIn</code>.</p><p>For·example,·the·following·expressions·all·return·<code·class="inline">[fie,·bar,·baz,·fum]</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">expand</span><span·class="p"·data-group-id="61[·...·truncated·by·diffoscope;·len:·915,·SHA:·052825bb94405f18155e99fd07835c018f22e07b3a1178c80b4de5da419edae5·...·] | |
| 617 | </span><span·class="nf">expand</span><span·class="p"·data-group-id="6145335083-6">(</span><span·class="p"·data-group-id="6145335083-7">[</span><span·class="p"·data-group-id="6145335083-8">{</span><span·class="p"·data-group-id="6145335083-9">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">true</span><span·class="p"·data-group-id="6145335083-9">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6145335083-10">[</span><span·class="ss">bar</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">baz</span><span·class="p"·data-group-id="6145335083-10">]</span><span·class="p"·data-group-id="6145335083-8">}</span><span·class="p"·data-group-id="6145335083-7">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6145335083-11">[</span><span·class="ss">fie</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">fum</span><span·class="p"·data-group-id="6145335083-11">]</span><span·class="p"·data-group-id="6145335083-6">)</span><span·class="w"> | ||
| 618 | </span><span·class="nf">expand</span><span·class="p"·data-group-id="6145335083-12">(</span><span·class="p"·data-group-id="6145335083-13">[</span><span·class="p"·data-group-id="6145335083-14">{</span><span·class="p"·data-group-id="6145335083-15">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">false</span><span·class="p"·data-group-id="6145335083-15">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6145335083-16">[</span><span·class="ss">bar</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">baz</span><span·class="p"·data-group-id="6145335083-16">]</span><span·class="p"·data-group-id="6145335083-14">}</span><span·class="p"·data-group-id="6145335083-13">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6145335083-17">[</span><span·class="ss">fie</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6145335083-18">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">false</span><span·class="p"·data-group-id="6145335083-18">}</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">fum</span><span·class="p"·data-group-id="6145335083-17">]</span><span·class="p"·data-group-id="6145335083-12">)</span></code></pre><p>However,·no·expansion·is·done·in·the·following·call·because·<code·class="inline">{foo,·false}</code> | ||
| 619 | shadows·<code·class="inline">foo</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">expand</span><span·class="p"·data-group-id="4391175117-1">(</span><span·class="p"·data-group-id="4391175117-2">[</span><span·class="p"·data-group-id="4391175117-3">{</span><span·class="p"·data-group-id="4391175117-4">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">true</span><span·class="p"·data-group-id="4391175117-4">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4391175117-5">[</span><span·class="ss">bar</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">baz</span><span·class="p"·data-group-id="4391175117-5">]</span><span·class="p"·data-group-id="4391175117-3">}</span><span·class="p"·data-group-id="4391175117-2">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4391175117-6">[</span><span·class="p"·data-group-id="4391175117-7">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">false</span><span·class="p"·data-group-id="4391175117-7">}</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">fie</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">fum</span><span·class="p"·data-group-id="4391175117-6">]</span><span·class="p"·data-group-id="4391175117-1">)</span></code></pre><p>Notice·that·if·the·original·property·term·is·to·be·preserved·in·the·result·when | ||
| 620 | expanded,·it·must·be·included·in·the·expansion·list.·The·inserted·terms·are·not | 620 | expanded,·it·must·be·included·in·the·expansion·list.·The·inserted·terms·are·not |
| 621 | expanded·recursively.·If·<code·class="inline">Expansions</code>·contains·more·than·one·property·with·the | 621 | expanded·recursively.·If·<code·class="inline">Expansions</code>·contains·more·than·one·property·with·the |
| 622 | same·key,·only·the·first·occurrence·is·used.</p><p>See·also·<a·href="#normalize/2"><code·class="inline">normalize/2</code></a>.</p> | 622 | same·key,·only·the·first·occurrence·is·used.</p><p>See·also·<a·href="#normalize/2"><code·class="inline">normalize/2</code></a>.</p> |
| 623 | ··</section> | 623 | ··</section> |
| 624 | </section> | 624 | </section> |
| 625 | <section·class="detail"·id="from_map/1"> | 625 | <section·class="detail"·id="from_map/1"> |
| Offset 992, 15 lines modified | Offset 992, 15 lines modified | ||
| 992 | ···············when·List·::·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>()],·Keys·::·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>()],·Lists·::·[[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>()]],·Rest·::·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>()].</pre> | 992 | ···············when·List·::·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>()],·Keys·::·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>()],·Lists·::·[[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>()]],·Rest·::·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>()].</pre> |
| 993 | ······</div> | 993 | ······</div> |
| 994 | <p>Partitions·<code·class="inline">List</code>·into·a·list·of·sublists·and·a·remainder.</p><p><code·class="inline">Lists</code>·contains·one·sublist·for·each·key·in·<code·class="inline">Keys</code>,·in·the·corresponding·order. | 994 | <p>Partitions·<code·class="inline">List</code>·into·a·list·of·sublists·and·a·remainder.</p><p><code·class="inline">Lists</code>·contains·one·sublist·for·each·key·in·<code·class="inline">Keys</code>,·in·the·corresponding·order. |
| 995 | The·relative·order·of·the·elements·in·each·sublist·is·preserved·from·the·original·<code·class="inline">List</code>. | 995 | The·relative·order·of·the·elements·in·each·sublist·is·preserved·from·the·original·<code·class="inline">List</code>. |
| 996 | <code·class="inline">Rest</code>·contains·the·elements·in·<code·class="inline">List</code>·that·are·not·associated·with·any·of·the | 996 | <code·class="inline">Rest</code>·contains·the·elements·in·<code·class="inline">List</code>·that·are·not·associated·with·any·of·the |
| 997 | specified·keys,·also·with·their·original·relative·order·preserved.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">split</span><span·class="p"·data-group-id=" | 997 | specified·keys,·also·with·their·original·relative·order·preserved.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">split</span><span·class="p"·data-group-id="9868730985-1">(</span><span·class="p"·data-group-id="9868730985-2">[</span><span·class="p"·data-group-id="9868730985-3">{</span><span·class="ss">c</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">2</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·3432,·SHA:·76784ab9f1d3f5ddd048b4e8111a61e73f8a74a72ddb763c26ed139cb1cc9b34·...·]-1">}</span></code></pre> |
| 998 | ··</section> | 998 | ··</section> |
| 999 | </section> | 999 | </section> |
| 1000 | <section·class="detail"·id="substitute_aliases/2"> | 1000 | <section·class="detail"·id="substitute_aliases/2"> |
| 1001 | ··<div·class="detail-header"> | 1001 | ··<div·class="detail-header"> |
| 1002 | ····<a·href="#substitute_aliases/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1002 | ····<a·href="#substitute_aliases/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1003 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1003 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 1109 | ······</div> | 1109 | ······</div> |
| 1110 | <p>Converts·the·property·list·<code·class="inline">List</code>·to·a·map.</p><p>Shorthand·atom·values·in·<code·class="inline">List</code>·will·be·expanded·to·an·association·of·the·form | 1110 | <p>Converts·the·property·list·<code·class="inline">List</code>·to·a·map.</p><p>Shorthand·atom·values·in·<code·class="inline">List</code>·will·be·expanded·to·an·association·of·the·form |
| 1111 | <code·class="inline">Atom·=>·true</code>.·Tuples·of·the·form·<code·class="inline">{Key,·Value}</code>·in·<code·class="inline">List</code>·will·be·converted·to | 1111 | <code·class="inline">Atom·=>·true</code>.·Tuples·of·the·form·<code·class="inline">{Key,·Value}</code>·in·<code·class="inline">List</code>·will·be·converted·to |
| 1112 | an·association·of·the·form·<code·class="inline">Key·=>·Value</code>.·Anything·else·will·be·silently | 1112 | an·association·of·the·form·<code·class="inline">Key·=>·Value</code>.·Anything·else·will·be·silently |
| 1113 | ignored.</p><p>If·the·same·key·appears·in·<code·class="inline">List</code>·multiple·times,·the·value·of·the·one·appearing | 1113 | ignored.</p><p>If·the·same·key·appears·in·<code·class="inline">List</code>·multiple·times,·the·value·of·the·one·appearing |
| 1114 | nearest·to·the·head·of·<code·class="inline">List</code>·will·be·in·the·result·map,·that·is·the·value·that | 1114 | nearest·to·the·head·of·<code·class="inline">List</code>·will·be·in·the·result·map,·that·is·the·value·that |
| 1115 | would·be·returned·by·a·call·to·<a·href="#get_value/2"><code·class="inline">get_value(Key,·List)</code></a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">to_map</span><span·class="p"·data-group-id=" | 1115 | would·be·returned·by·a·call·to·<a·href="#get_value/2"><code·class="inline">get_value(Key,·List)</code></a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">to_map</span><span·class="p"·data-group-id="0591662611-1">(</span><span·class="p"·data-group-id="0591662611-2">[</span><span·class="ss">a</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0591662611-3">{</span><span·class="ss">b</span><span·class="p">,</span><span·[·...·truncated·by·diffoscope;·len:·1354,·SHA:·cc2e8e435d25a667d42aad5e2e7a71f81a876706e8776c284fb8acf1521cbe94·...·]-1">}</span></code></pre> |
| 1116 | ··</section> | 1116 | ··</section> |
| 1117 | </section> | 1117 | </section> |
| 1118 | <section·class="detail"·id="to_map/2"> | 1118 | <section·class="detail"·id="to_map/2"> |
| 1119 | ··<div·class="detail-header"> | 1119 | ··<div·class="detail-header"> |
| 1120 | ····<a·href="#to_map/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1120 | ····<a·href="#to_map/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1121 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1121 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 281 | traverses·objects·from·many·tables·or·lists·after·each·other.·If,·for·example, | 281 | traverses·objects·from·many·tables·or·lists·after·each·other.·If,·for·example, |
| 282 | you·want·to·traverse·all·answers·to·a·query·<code·class="inline">QH</code>·and·then·finish·off·by·a·term | 282 | you·want·to·traverse·all·answers·to·a·query·<code·class="inline">QH</code>·and·then·finish·off·by·a·term |
| 283 | <code·class="inline">{finished}</code>,·you·can·do·that·by·calling·<code·class="inline">qlc:append(QH,·[{finished}])</code>. | 283 | <code·class="inline">{finished}</code>,·you·can·do·that·by·calling·<code·class="inline">qlc:append(QH,·[{finished}])</code>. |
| 284 | <a·href="#append/2"><code·class="inline">append/2</code></a>·first·returns·all·objects·of·<code·class="inline">QH</code>,·then·<code·class="inline">{finished}</code>. | 284 | <a·href="#append/2"><code·class="inline">append/2</code></a>·first·returns·all·objects·of·<code·class="inline">QH</code>,·then·<code·class="inline">{finished}</code>. |
| 285 | If·a·tuple·<code·class="inline">{finished}</code>·exists·among·the·answers·to·<code·class="inline">QH</code>,·it·is·returned·twice | 285 | If·a·tuple·<code·class="inline">{finished}</code>·exists·among·the·answers·to·<code·class="inline">QH</code>,·it·is·returned·twice |
| 286 | from·<a·href="#append/2"><code·class="inline">append/2</code></a>.</p><p>As·another·example,·consider·concatenating·the·answers·to·two·queries·<code·class="inline">QH1</code>·and | 286 | from·<a·href="#append/2"><code·class="inline">append/2</code></a>.</p><p>As·another·example,·consider·concatenating·the·answers·to·two·queries·<code·class="inline">QH1</code>·and |
| 287 | <code·class="inline">QH2</code>·while·removing·all·duplicates.·This·is·accomplished·by·using·option | 287 | <code·class="inline">QH2</code>·while·removing·all·duplicates.·This·is·accomplished·by·using·option |
| 288 | <code·class="inline">unique</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">qlc</span><span·class="p">:</span><span·class="nf">q</span><span·class="p"·data-group-id=" | 288 | <code·class="inline">unique</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">qlc</span><span·class="p">:</span><span·class="nf">q</span><span·class="p"·data-group-id="8529385244-1">(</span><span·class="p"·data-group-id="8529385244-2">[</span><span·class="n">X</span><span·class="w">·</span><span·class="p">||</span><span·class="w">·</span><span·class="n">X</span><span·class="w">·</span><span·class="o"><-</span><span·cl[·...·truncated·by·diffoscope;·len:·657,·SHA:·4ed4c9e41f1abf79e9eb07110a34e9ecf0fdc10ed513244bd37a9696d7767188·...·]-1">)</span></code></pre><p>The·cost·is·substantial:·every·returned·answer·is·stored·in·an·ETS·table.·Before |
| 289 | returning·an·answer,·it·is·looked·up·in·the·ETS·table·to·check·if·it·has·already | 289 | returning·an·answer,·it·is·looked·up·in·the·ETS·table·to·check·if·it·has·already |
| 290 | been·returned.·Without·the·<code·class="inline">unique</code>·option,·all·answers·to·<code·class="inline">QH1</code>·would·be | 290 | been·returned.·Without·the·<code·class="inline">unique</code>·option,·all·answers·to·<code·class="inline">QH1</code>·would·be |
| 291 | returned·followed·by·all·answers·to·<code·class="inline">QH2</code>.·The·<code·class="inline">unique</code>·option·keeps·the·order | 291 | returned·followed·by·all·answers·to·<code·class="inline">QH2</code>.·The·<code·class="inline">unique</code>·option·keeps·the·order |
| 292 | between·the·remaining·answers.</p><p>If·the·order·of·the·answers·is·not·important,·there·is·an·alternative·to·the | 292 | between·the·remaining·answers.</p><p>If·the·order·of·the·answers·is·not·important,·there·is·an·alternative·to·the |
| 293 | <code·class="inline">unique</code>·option,·namely·to·sort·the·answers·uniquely:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">qlc</span><span·class="p">:</span><span·class="nf">sort</span><span·class="p"·data-group-id=" | 293 | <code·class="inline">unique</code>·option,·namely·to·sort·the·answers·uniquely:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">qlc</span><span·class="p">:</span><span·class="nf">sort</span><span·class="p"·data-group-id="0420045097-1">(</span><span·class="nc">qlc</span><span·class="p">:</span><span·class="nf">q</span><span·class="p"·data-group-id="0420045097-2">(</span><span·class="p"·data-group-id="0420045097-3">[</span><span·class="n">X</span><span·class="w">·</span><spa[·...·truncated·by·diffoscope;·len:·839,·SHA:·258607f947bc854eae7029f8b321970d39f9d6b45f8a73b6abad589ce6120424·...·]-1">)</span><span·class="p">.</span></code></pre><p>This·query·also·removes·duplicates·but·the·answers·are·sorted.·If·there·are·many |
| 294 | answers,·temporary·files·are·used.·Notice·that·to·get·the·first·unique·answer, | 294 | answers,·temporary·files·are·used.·Notice·that·to·get·the·first·unique·answer, |
| 295 | all·answers·must·be·found·and·sorted.·Both·alternatives·find·duplicates·by | 295 | all·answers·must·be·found·and·sorted.·Both·alternatives·find·duplicates·by |
| 296 | comparing·answers,·that·is,·if·<code·class="inline">A1</code>·and·<code·class="inline">A2</code>·are·answers·found·in·that·order, | 296 | comparing·answers,·that·is,·if·<code·class="inline">A1</code>·and·<code·class="inline">A2</code>·are·answers·found·in·that·order, |
| 297 | then·<code·class="inline">A2</code>·is·a·removed·if·<code·class="inline">A1·==·A2</code>.</p><p>To·return·only·a·few·answers,·cursors·can·be·used.·The·following·code·returns·no | 297 | then·<code·class="inline">A2</code>·is·a·removed·if·<code·class="inline">A1·==·A2</code>.</p><p>To·return·only·a·few·answers,·cursors·can·be·used.·The·following·code·returns·no |
| 298 | more·than·five·answers·using·an·ETS·table·for·storing·the·unique·answers:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">C</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">qlc</span><span·class="p">:</span><span·class="nf">cursor</span><span·class="p"·data-group-id=" | 298 | more·than·five·answers·using·an·ETS·table·for·storing·the·unique·answers:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">C</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">qlc</span><span·class="p">:</span><span·class="nf">cursor</span><span·class="p"·data-group-id="6845226977-1">(</span><span·class="nc">qlc</span><span·class="p">:</span><span·class="nf">q</span><span·class="p"·data-group-id="6845226977-2">(</span><span·class="p"·data-group-id="6845226977-3">[</span><span·class="n">X</span><span·class="w">·</span><spa[·...·truncated·by·diffoscope;·len:·791,·SHA:·957925bb7ed69892d44449404419df99459c9ac958a4bb41e8ca1c87e2fef604·...·]-1">)</span><span·class="p">,</span><span·class="w"> |
| 299 | </span><span·class="n">R</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">qlc</span><span·class="p">:</span><span·class="nf">next_answers</span><span·class="p"·data-group-id=" | 299 | </span><span·class="n">R</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">qlc</span><span·class="p">:</span><span·class="nf">next_answers</span><span·class="p"·data-group-id="6845226977-6">(</span><span·class="n">C</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">5</span><span·class="p"·data-group-id="6845226977-6">)</span><span·class="p">,</span><span·class="w"> |
| 300 | </span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">qlc</span><span·class="p">:</span><span·class="nf">delete_cursor</span><span·class="p"·data-group-id=" | 300 | </span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">qlc</span><span·class="p">:</span><span·class="nf">delete_cursor</span><span·class="p"·data-group-id="6845226977-7">(</span><span·class="n">C</span><span·class="p"·data-group-id="6845226977-7">)</span><span·class="p">,</span><span·class="w"> |
| 301 | </span><span·class="n">R</span><span·class="p">.</span></code></pre><p>QLCs·are·convenient·for·stating·constraints·on·data·from·two·or·more·tables.·The | 301 | </span><span·class="n">R</span><span·class="p">.</span></code></pre><p>QLCs·are·convenient·for·stating·constraints·on·data·from·two·or·more·tables.·The |
| 302 | following·example·does·a·natural·join·on·two·query·handles·on·position·2:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">qlc</span><span·class="p">:</span><span·class="nf">q</span><span·class="p"·data-group-id=" | 302 | following·example·does·a·natural·join·on·two·query·handles·on·position·2:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">qlc</span><span·class="p">:</span><span·class="nf">q</span><span·class="p"·data-group-id="0491939960-1">(</span><span·class="p"·data-group-id="0491939960-2">[</span><span·class="p"·data-group-id="0491939960-3">{</span><span·class="n">X1</span><span·class="p">,</span><span·class="n">X2</span><span·class="p">,</span><span·class="n">X3</span><span[·...·truncated·by·diffoscope;·len:·85,·SHA:·aa54e26918d762a71895a3a2933877a3a3eb2344b74125e9d76f81bbfe9ac563·...·]-3">}</span><span·class="w">·</span><span·class="p">||</span><span·class="w"> |
| 303 | ··········</span><span·class="p"·data-group-id=" | 303 | ··········</span><span·class="p"·data-group-id="0491939960-4">{</span><span·class="n">X1</span><span·class="p">,</span><span·class="n">X2</span><span·class="p">,</span><span·class="n">X3</span><span·class="p"·data-group-id="0491939960-4">}</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="n">QH1</span><span·class="p">,</span><span·class="w"> |
| 304 | ··········</span><span·class="p"·data-group-id=" | 304 | ··········</span><span·class="p"·data-group-id="0491939960-5">{</span><span·class="n">Y1</span><span·class="p">,</span><span·class="n">Y2</span><span·class="p"·data-group-id="0491939960-5">}</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="n">QH2</span><span·class="p">,</span><span·class="w"> |
| 305 | ··········</span><span·class="n">X2</span><span·class="w">·</span><span·class="o">=:=</span><span·class="w">·</span><span·class="n">Y2</span><span·class="p"·data-group-id=" | 305 | ··········</span><span·class="n">X2</span><span·class="w">·</span><span·class="o">=:=</span><span·class="w">·</span><span·class="n">Y2</span><span·class="p"·data-group-id="0491939960-2">]</span><span·class="p"·data-group-id="0491939960-1">)</span></code></pre><p>The·<code·class="inline">qlc</code>·module·evaluates·this·differently·depending·on·the·query·handles·<code·class="inline">QH1</code> |
| 306 | and·<code·class="inline">QH2</code>.·If,·for·example,·<code·class="inline">X2</code>·is·matched·against·the·key·of·a·QLC·table,·the | 306 | and·<code·class="inline">QH2</code>.·If,·for·example,·<code·class="inline">X2</code>·is·matched·against·the·key·of·a·QLC·table,·the |
| 307 | lookup·join·method·traverses·the·objects·of·<code·class="inline">QH2</code>·while·looking·up·key·values·in | 307 | lookup·join·method·traverses·the·objects·of·<code·class="inline">QH2</code>·while·looking·up·key·values·in |
| 308 | the·table.·However,·if·not·<code·class="inline">X2</code>·or·<code·class="inline">Y2</code>·is·matched·against·the·key·or·an·indexed | 308 | the·table.·However,·if·not·<code·class="inline">X2</code>·or·<code·class="inline">Y2</code>·is·matched·against·the·key·or·an·indexed |
| 309 | position·of·a·QLC·table,·the·merge·join·method·ensures·that·<code·class="inline">QH1</code>·and·<code·class="inline">QH2</code>·are | 309 | position·of·a·QLC·table,·the·merge·join·method·ensures·that·<code·class="inline">QH1</code>·and·<code·class="inline">QH2</code>·are |
| 310 | both·sorted·on·position·2·and·next·do·the·join·by·traversing·the·objects·one·by | 310 | both·sorted·on·position·2·and·next·do·the·join·by·traversing·the·objects·one·by |
| 311 | one.</p><p>Option·<code·class="inline">join</code>·can·be·used·to·force·the·<code·class="inline">qlc</code>·module·to·use·a·certain·join | 311 | one.</p><p>Option·<code·class="inline">join</code>·can·be·used·to·force·the·<code·class="inline">qlc</code>·module·to·use·a·certain·join |
| 312 | method.·For·the·rest·of·this·section·it·is·assumed·that·the·excessively·slow | 312 | method.·For·the·rest·of·this·section·it·is·assumed·that·the·excessively·slow |
| 313 | join·method·called·"nested·loop"·has·been·chosen:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">qlc</span><span·class="p">:</span><span·class="nf">q</span><span·class="p"·data-group-id=" | 313 | join·method·called·"nested·loop"·has·been·chosen:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">qlc</span><span·class="p">:</span><span·class="nf">q</span><span·class="p"·data-group-id="3550498803-1">(</span><span·class="p"·data-group-id="3550498803-2">[</span><span·class="p"·data-group-id="3550498803-3">{</span><span·class="n">X1</span><span·class="p">,</span><span·class="n">X2</span><span·class="p">,</span><span·class="n">X3</span><span[·...·truncated·by·diffoscope;·len:·85,·SHA:·4f8e119759008ce8d5c7942ed0a0272bc0b4a130fb2846b9602b95d89eea8f40·...·]-3">}</span><span·class="w">·</span><span·class="p">||</span><span·class="w"> |
| 314 | ··········</span><span·class="p"·data-group-id=" | 314 | ··········</span><span·class="p"·data-group-id="3550498803-4">{</span><span·class="n">X1</span><span·class="p">,</span><span·class="n">X2</span><span·class="p">,</span><span·class="n">X3</span><span·class="p"·data-group-id="3550498803-4">}</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="n">QH1</span><span·class="p">,</span><span·class="w"> |
| 315 | ··········</span><span·class="p"·data-group-id=" | 315 | ··········</span><span·class="p"·data-group-id="3550498803-5">{</span><span·class="n">Y1</span><span·class="p">,</span><span·class="n">Y2</span><span·class="p"·data-group-id="3550498803-5">}</span><span·class="w">·</span><span·class="o"><-</span><span·class="w">·</span><span·class="n">QH2</span><span·class="p">,</span><span·class="w"> |
| 316 | ··········</span><span·class="n">X2</span><span·class="w">·</span><span·class="o">=:=</span><span·class="w">·</span><span·class="n">Y2</span><span·class="p"·data-group-id=" | 316 | ··········</span><span·class="n">X2</span><span·class="w">·</span><span·class="o">=:=</span><span·class="w">·</span><span·class="n">Y2</span><span·class="p"·data-group-id="3550498803-2">]</span><span·class="p">,</span><span·class="w"> |
| 317 | ······</span><span·class="p"·data-group-id=" | 317 | ······</span><span·class="p"·data-group-id="3550498803-6">{</span><span·class="ss">join</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">nested_loop</span><span·class="p"·data-group-id="3550498803-6">}</span><span·class="p"·data-group-id="3550498803-1">)</span></code></pre><p>In·this·case·the·filter·is·applied·to·every·possible·pair·of·answers·to·<code·class="inline">QH1</code> |
| 318 | and·<code·class="inline">QH2</code>,·one·at·a·time.·If·there·are·M·answers·to·<code·class="inline">QH1</code>·and·N·answers·to | 318 | and·<code·class="inline">QH2</code>,·one·at·a·time.·If·there·are·M·answers·to·<code·class="inline">QH1</code>·and·N·answers·to |
| 319 | <code·class="inline">QH2</code>,·the·filter·is·run·M*N·times.</p><p>If·<code·class="inline">QH2</code>·is·a·call·to·the·function·for·<a·href="gb_trees.html"><code·class="inline">gb_trees</code></a>,·as·defined·in·section | 319 | <code·class="inline">QH2</code>,·the·filter·is·run·M*N·times.</p><p>If·<code·class="inline">QH2</code>·is·a·call·to·the·function·for·<a·href="gb_trees.html"><code·class="inline">gb_trees</code></a>,·as·defined·in·section |
| 320 | <a·href="qlc.html#implementing_a_qlc_table">Implementing·a·QLC·Table</a>,·then | 320 | <a·href="qlc.html#implementing_a_qlc_table">Implementing·a·QLC·Table</a>,·then |
| 321 | <a·href="qlc.html#gb_table"><code·class="inline">gb_table:table/1</code>·</a>,·the·iterator·for·the·gb-tree·is | 321 | <a·href="qlc.html#gb_table"><code·class="inline">gb_table:table/1</code>·</a>,·the·iterator·for·the·gb-tree·is |
| 322 | initiated·for·each·answer·to·<code·class="inline">QH1</code>.·The·objects·of·the·gb-tree·are·then·returned | 322 | initiated·for·each·answer·to·<code·class="inline">QH1</code>.·The·objects·of·the·gb-tree·are·then·returned |
| 323 | one·by·one.·This·is·probably·the·most·efficient·way·of·traversing·the·table·in | 323 | one·by·one.·This·is·probably·the·most·efficient·way·of·traversing·the·table·in |
| 324 | that·case,·as·it·takes·minimal·computational·power·to·get·the·following·object. | 324 | that·case,·as·it·takes·minimal·computational·power·to·get·the·following·object. |
| 325 | But·if·<code·class="inline">QH2</code>·is·not·a·table·but·a·more·complicated·QLC,·it·can·be·more·efficient | 325 | But·if·<code·class="inline">QH2</code>·is·not·a·table·but·a·more·complicated·QLC,·it·can·be·more·efficient |
| 326 | to·use·some·RAM·memory·for·collecting·the·answers·in·a·cache,·particularly·if | 326 | to·use·some·RAM·memory·for·collecting·the·answers·in·a·cache,·particularly·if |
| 327 | there·are·only·a·few·answers.·It·must·then·be·assumed·that·evaluating·<code·class="inline">QH2</code>·has | 327 | there·are·only·a·few·answers.·It·must·then·be·assumed·that·evaluating·<code·class="inline">QH2</code>·has |
| 328 | no·side·effects·so·that·the·meaning·of·the·query·does·not·change·if·<code·class="inline">QH2</code>·is | 328 | no·side·effects·so·that·the·meaning·of·the·query·does·not·change·if·<code·class="inline">QH2</code>·is |
| 329 | evaluated·only·once.·One·way·of·caching·the·answers·is·to·evaluate·<code·class="inline">QH2</code>·first | 329 | evaluated·only·once.·One·way·of·caching·the·answers·is·to·evaluate·<code·class="inline">QH2</code>·first |
| 330 | of·all·and·substitute·the·list·of·answers·for·<code·class="inline">QH2</code>·in·the·query.·Another·way·is | 330 | of·all·and·substitute·the·list·of·answers·for·<code·class="inline">QH2</code>·in·the·query.·Another·way·is |
| 331 | to·use·option·<code·class="inline">cache</code>.·It·is·expressed·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">QH2</span><span·class="err">'</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">qlc</span><span·class="p">:</span><span·class="nf">q</span><span·class="p"·data-group-id="42 | 331 | to·use·option·<code·class="inline">cache</code>.·It·is·expressed·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">QH2</span><span·class="err">'</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">qlc</span><span·class="p">:</span><span·class="nf">q</span><span·class="p"·data-group-id="5424841942-1">(</span><span·class="p"·data-group-id="5424841942-2">[</span><span·class="n">X</span><span·class="w">·</span><span·class="p">||</span><span·class="w">·</span><span·class="n">X</span><span·class="w">·</span><span·class="o"><-</span><span·cl[·...·truncated·by·diffoscope;·len:·394,·SHA:·a352f5666d735d9135a5022c852b63634a1e9db0cf8566959c09ca45fb4e5b24·...·]-1">)</span></code></pre><p>or·only</p><pre><code·class="text">QH2'·=·qlc:q([X·||·X·<-·QH2],·cache)</code></pre><p>The·effect·of·option·<code·class="inline">cache</code>·is·that·when·generator·<code·class="inline">QH2'</code>·is·run·the·first |
| 332 | time,·every·answer·is·stored·in·an·ETS·table.·When·the·next·answer·of·<code·class="inline">QH1</code>·is | 332 | time,·every·answer·is·stored·in·an·ETS·table.·When·the·next·answer·of·<code·class="inline">QH1</code>·is |
| 333 | tried,·answers·to·<code·class="inline">QH2'</code>·are·copied·from·the·ETS·table,·which·is·very·fast.·As | 333 | tried,·answers·to·<code·class="inline">QH2'</code>·are·copied·from·the·ETS·table,·which·is·very·fast.·As |
| 334 | for·option·<code·class="inline">unique</code>·the·cost·is·a·possibly·substantial·amount·of·RAM·memory.</p><p>Option·<code·class="inline">{cache, list}</code>·offers·the·possibility·to·store·the·answers·in·a·list·on | 334 | for·option·<code·class="inline">unique</code>·the·cost·is·a·possibly·substantial·amount·of·RAM·memory.</p><p>Option·<code·class="inline">{cache, list}</code>·offers·the·possibility·to·store·the·answers·in·a·list·on |
| 335 | the·process·heap.·This·has·the·potential·of·being·faster·than·ETS·tables,·as | 335 | the·process·heap.·This·has·the·potential·of·being·faster·than·ETS·tables,·as |
| 336 | there·is·no·need·to·copy·answers·from·the·table.·However,·it·can·often·result·in | 336 | there·is·no·need·to·copy·answers·from·the·table.·However,·it·can·often·result·in |
| 337 | slower·evaluation·because·of·more·garbage·collections·of·the·process·heap·and | 337 | slower·evaluation·because·of·more·garbage·collections·of·the·process·heap·and |
| 338 | increased·RAM·memory·consumption·because·of·larger·heaps.·Another·drawback·with | 338 | increased·RAM·memory·consumption·because·of·larger·heaps.·Another·drawback·with |
| Offset 346, 70 lines modified | Offset 346, 70 lines modified | ||
| 346 | is·needed·to·pinpoint·the·generators·that·are·to·be·cached.</p><p><a·href=""·id="implementing_a_qlc_table"></a></p><h2·id="module-implementing-a-qlc-table"·class="section-heading"> | 346 | is·needed·to·pinpoint·the·generators·that·are·to·be·cached.</p><p><a·href=""·id="implementing_a_qlc_table"></a></p><h2·id="module-implementing-a-qlc-table"·class="section-heading"> |
| 347 | ··<a·href="#module-implementing-a-qlc-table"·class="hover-link"> | 347 | ··<a·href="#module-implementing-a-qlc-table"·class="hover-link"> |
| 348 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 348 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 349 | ··</a> | 349 | ··</a> |
| 350 | ··<span·class="text">Implementing·a·QLC·Table</span> | 350 | ··<span·class="text">Implementing·a·QLC·Table</span> |
| 351 | </h2> | 351 | </h2> |
| 352 | <p>As·an·example·of·how·to·use·function·<a·href="#table/2"><code·class="inline">table/2</code></a>,·the·implementation·of·a·QLC | 352 | <p>As·an·example·of·how·to·use·function·<a·href="#table/2"><code·class="inline">table/2</code></a>,·the·implementation·of·a·QLC |
| 353 | table·for·the·<a·href="gb_trees.html"><code·class="inline">gb_trees</code></a>·module·is·given:</p><p><a·href=""·id="gb_table"></a></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 353 | table·for·the·<a·href="gb_trees.html"><code·class="inline">gb_trees</code></a>·module·is·given:</p><p><a·href=""·id="gb_table"></a></p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="5890342218-1">(</span><span·class="ss">gb_table</span><span·class="p"·data-group-id="5890342218-1">)</span><span·class="p">.</span><span·class="w"> |
| 354 | </span><span·class="w"> | 354 | </span><span·class="w"> |
| 355 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 355 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="5890342218-2">(</span><span·class="p"·data-group-id="5890342218-3">[</span><span·class="ss">table</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id="5890342218-3">]</span><span·class="p"·data-group-id="5890342218-2">)</span><span·class="p">.</span><span·class="w"> |
| 356 | </span><span·class="nf">table</span><span·class="p"·data-group-id=" | 356 | </span><span·class="nf">table</span><span·class="p"·data-group-id="5890342218-4">(</span><span·class="n">T</span><span·class="p"·data-group-id="5890342218-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 357 | ····</span><span·class="n">TF</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 357 | ····</span><span·class="n">TF</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="5890342218-5">(</span><span·class="p"·data-group-id="5890342218-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">qlc_next</span><span·class="p"·data-group-id="5890342218-6">(</span><span·class="nc">gb_[·...·truncated·by·diffoscope;·len:·429,·SHA:·0a16e9ec035dc8bfe865c6aac0136d316910a6362f6b5c77c580fc8aca852013·...·]-6">)</span><span·class="w">·</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 358 | ····</span><span·class="n">InfoFun</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 358 | ····</span><span·class="n">InfoFun</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="5890342218-9">(</span><span·class="ss">num_of_objects</span><span·class="p"·data-group-id="5890342218-9">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nc">gb_trees</span><span·class="p">:</span><span·class[·...·truncated·by·diffoscope;·len:·136,·SHA:·95b6361c27da441990636e1cf6f54338f01882e19babe0aef5da60dcd2206fdf·...·]-10">)</span><span·class="p">;</span><span·class="w"> |
| 359 | ·················</span><span·class="p"·data-group-id=" | 359 | ·················</span><span·class="p"·data-group-id="5890342218-11">(</span><span·class="ss">keypos</span><span·class="p"·data-group-id="5890342218-11">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="mi">1</span><span·class="p">;</span><span·class="w"> |
| 360 | ·················</span><span·class="p"·data-group-id=" | 360 | ·················</span><span·class="p"·data-group-id="5890342218-12">(</span><span·class="ss">is_sorted_key</span><span·class="p"·data-group-id="5890342218-12">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> |
| 361 | ·················</span><span·class="p"·data-group-id=" | 361 | ·················</span><span·class="p"·data-group-id="5890342218-13">(</span><span·class="ss">is_unique_objects</span><span·class="p"·data-group-id="5890342218-13">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">true</span><span·class="p">;</span><span·class="w"> |
| 362 | ·················</span><span·class="p"·data-group-id=" | 362 | ·················</span><span·class="p"·data-group-id="5890342218-14">(</span><span·class="p">_</span><span·class="p"·data-group-id="5890342218-14">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">undefined</span><span·class="w"> |
| 363 | ··············</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 363 | ··············</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 364 | ····</span><span·class="n">LookupFun</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 364 | ····</span><span·class="n">LookupFun</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 365 | ········</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 365 | ········</span><span·class="nf">fun</span><span·class="p"·data-group-id="5890342218-15">(</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ks</span><span·class="p"·data-group-id="5890342218-15">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 366 | ················</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">flatmap</span><span·class="p"·data-group-id=" | 366 | ················</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">flatmap</span><span·class="p"·data-group-id="5890342218-16">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="5890342218-17">(</span><span·class="n">K</span><span·class="p"·data-group-id="5890342218-17">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 367 | ······································</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">gb_trees</span><span·class="p">:</span><span·class="nf">lookup</span><span·class="p"·data-group-id=" | 367 | ······································</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">gb_trees</span><span·class="p">:</span><span·class="nf">lookup</span><span·class="p"·data-group-id="5890342218-18">(</span><span·class="n">K</span><span·class="p">,</span><span·class="w">·</span><span·class="n">T</span><span·class="p"·data-group-id="5890342218-18">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 368 | ··········································</span><span·class="p"·data-group-id=" | 368 | ··········································</span><span·class="p"·data-group-id="5890342218-19">{</span><span·class="ss">value</span><span·class="p">,</span><span·class="w">·</span><span·class="n">V</span><span·class="p"·data-group-id="5890342218-19">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><s[·...·truncated·by·diffoscope;·len:·273,·SHA:·c5031cd8fc2b0b27f288876fb899745fdd1f4c7497c9f5f7c38e72a01d5633d9·...·]-20">]</span><span·class="p">;</span><span·class="w"> |
| 369 | ··········································</span><span·class="ss">none</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id=" | 369 | ··········································</span><span·class="ss">none</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="5890342218-22">[</span><span·class="p"·data-group-id="5890342218-22">]</span><span·class="w"> |
| 370 | ······································</span><span·class="k">end</span><span·class="w"> | 370 | ······································</span><span·class="k">end</span><span·class="w"> |
| 371 | ······························</span><span·class="k">end</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ks</span><span·class="p"·data-group-id=" | 371 | ······························</span><span·class="k">end</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ks</span><span·class="p"·data-group-id="5890342218-16">)</span><span·class="w"> |
| 372 | ········</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 372 | ········</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 373 | ····</span><span·class="n">FormatFun</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 373 | ····</span><span·class="n">FormatFun</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 374 | ········</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 374 | ········</span><span·class="nf">fun</span><span·class="p"·data-group-id="5890342218-23">(</span><span·class="p"·data-group-id="5890342218-24">{</span><span·class="ss">all</span><span·class="p">,</span><span·class="w">·</span><span·class="n">NElements</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ElementF[·...·truncated·by·diffoscope;·len:·104,·SHA:·bb91acaa4f0e02faa5a040eeb67da611bba32599245b4a895f652db704a277a2·...·]-23">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 375 | ················</span><span·class="n">ValsS</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">io_lib</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 375 | ················</span><span·class="n">ValsS</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">io_lib</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="5890342218-25">(</span><span·class="s">"gb_trees:from_orddict(</span><span·class="si">~w</span><span·class="s">)"</span><span·class="p">,</span><span·class="w"> |
| 376 | ······································</span><span·class="p"·data-group-id=" | 376 | ······································</span><span·class="p"·data-group-id="5890342218-26">[</span><span·class="nf">gb_nodes</span><span·class="p"·data-group-id="5890342218-27">(</span><span·class="n">T</span><span·class="p">,</span><span·class="w">·</span><span·class="n">NElements</span><span·class="p">,</span><span·class="w">·</[·...·truncated·by·diffoscope;·len:·187,·SHA:·9ec238302a09e37c21e07bacb43af278bff606a3b0a368824e123358571d0a9e·...·]-25">)</span><span·class="p">,</span><span·class="w"> |
| 377 | ················</span><span·class="nc">io_lib</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 377 | ················</span><span·class="nc">io_lib</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="5890342218-28">(</span><span·class="s">"gb_table:table(</span><span·class="si">~s</span><span·class="s">)"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5890342218-29">[</span><span·class="n">ValsS</span><sp[·...·truncated·by·diffoscope;·len:·92,·SHA:·89b74093338c143efefabecc3f31a8dd80f273acb9b095ee634fc7b7d07ce712·...·]-28">)</span><span·class="p">;</span><span·class="w"> |
| 378 | ···········</span><span·class="p"·data-group-id=" | 378 | ···········</span><span·class="p"·data-group-id="5890342218-30">(</span><span·class="p"·data-group-id="5890342218-31">{</span><span·class="ss">lookup</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">KeyValues</s[·...·truncated·by·diffoscope;·len:·284,·SHA:·dc4190a681c8637897ea9454996b3adebedf37f7682ee174db7e8b06ba698b38·...·]-30">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 379 | ················</span><span·class="n">ValsS</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">io_lib</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 379 | ················</span><span·class="n">ValsS</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">io_lib</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="5890342218-32">(</span><span·class="s">"gb_trees:from_orddict(</span><span·class="si">~w</span><span·class="s">)"</span><span·class="p">,</span><span·class="w"> |
| 380 | ······································</span><span·class="p"·data-group-id=" | 380 | ······································</span><span·class="p"·data-group-id="5890342218-33">[</span><span·class="nf">gb_nodes</span><span·class="p"·data-group-id="5890342218-34">(</span><span·class="n">T</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">infinity</span><span·class="p">,</span><span·class="w">·</[·...·truncated·by·diffoscope;·len:·187,·SHA:·c56dd6b9e55deaae429a153dfc53ccf2c58d8e7083c8c8ee5215c9154ed91276·...·]-32">)</span><span·class="p">,</span><span·class="w"> |
| 381 | ················</span><span·class="nc">io_lib</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 381 | ················</span><span·class="nc">io_lib</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="5890342218-35">(</span><span·class="s">"lists:flatmap(fun(K)·->·"</span><span·class="w"> |
| 382 | ······························</span><span·class="s">"case·gb_trees:lookup(K,·</span><span·class="si">~s</span><span·class="s">)·of·"</span><span·class="w"> | 382 | ······························</span><span·class="s">"case·gb_trees:lookup(K,·</span><span·class="si">~s</span><span·class="s">)·of·"</span><span·class="w"> |
| 383 | ······························</span><span·class="s">"{value,·V}·->·[{K,V}];none·->·[]·end·"</span><span·class="w"> | 383 | ······························</span><span·class="s">"{value,·V}·->·[{K,V}];none·->·[]·end·"</span><span·class="w"> |
| 384 | ······························</span><span·class="s">"end,·</span><span·class="si">~w</span><span·class="s">)"</span><span·class="p">,</span><span·class="w"> | 384 | ······························</span><span·class="s">"end,·</span><span·class="si">~w</span><span·class="s">)"</span><span·class="p">,</span><span·class="w"> |
| 385 | ······························</span><span·class="p"·data-group-id=" | 385 | ······························</span><span·class="p"·data-group-id="5890342218-36">[</span><span·class="n">ValsS</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5890342218-37">[</span><span·class="n">ElementFun</span><span·class="p"·data-group-id="5890342218-38">(</span><span·class="n">[·...·truncated·by·diffoscope;·len:·418,·SHA:·165173965fbd94829a602401fd2e68a78fd905e66da61804bca8124ce5a009a6·...·]-35">)</span><span·class="w"> |
| 386 | ········</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 386 | ········</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 387 | ····</span><span·class="nc">qlc</span><span·class="p">:</span><span·class="nf">table</span><span·class="p"·data-group-id=" | 387 | ····</span><span·class="nc">qlc</span><span·class="p">:</span><span·class="nf">table</span><span·class="p"·data-group-id="5890342218-39">(</span><span·class="n">TF</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5890342218-40">[</span><span·class="p"·data-group-id="5890342218-41">{</span><span·class="ss">info_fun</span><span·class="p">,</s[·...·truncated·by·diffoscope;·len:·369,·SHA:·12883d41d31a62e831063892906919658dbc53d6b3d42a301c593378adf9f3a2·...·]-42">}</span><span·class="p">,</span><span·class="w"> |
| 388 | ···················</span><span·class="p"·data-group-id=" | 388 | ···················</span><span·class="p"·data-group-id="5890342218-43">{</span><span·class="ss">lookup_fun</span><span·class="p">,</span><span·class="w">·</span><span·class="n">LookupFun</span><span·class="p"·data-group-id="5890342218-43">}</span><span·class="p">,</span><span·class="p"·data-group-id="5890342218[·...·truncated·by·diffoscope;·len:·258,·SHA:·801b8babe7076d0c645359c3aa7ac68060fad085cd35468e30e5a1b83b20eb10·...·]-39">)</span><span·class="p">.</span><span·class="w"> |
| 389 | </span><span·class="nf">qlc_next</span><span·class="p"·data-group-id=" | 389 | </span><span·class="nf">qlc_next</span><span·class="p"·data-group-id="5890342218-45">(</span><span·class="p"·data-group-id="5890342218-46">{</span><span·class="n">X</span><span·class="p">,</span><span·class="w">·</span><span·class="n">V</span><span·class="p">,</span><span·class="w">·</span><span·class="n">S</span><span·class[·...·truncated·by·diffoscope;·len:·84,·SHA:·56c4a982d0f38ad03250773a3fcdcb9e6db08f6c2076a12f4141443fc34c1f6c·...·]-45">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 390 | ····</span><span·class="p"·data-group-id=" | 390 | ····</span><span·class="p"·data-group-id="5890342218-47">[</span><span·class="p"·data-group-id="5890342218-48">{</span><span·class="n">X</span><span·class="p">,</span><span·class="n">V</span><span·class="p"·data-group-id="5890342218-48">}</span><span·class="w">·</span><span·class="p">|</span><span[·...·truncated·by·diffoscope;·len:·677,·SHA:·8f3ff0921a55d6eeaa618926a335d2297fcfe251a3499e7b8fd5b09c644493fe·...·]-47">]</span><span·class="p">;</span><span·class="w"> |
| 391 | </span><span·class="nf">qlc_next</span><span·class="p"·data-group-id=" | 391 | </span><span·class="nf">qlc_next</span><span·class="p"·data-group-id="5890342218-52">(</span><span·class="ss">none</span><span·class="p"·data-group-id="5890342218-52">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 392 | ····</span><span·class="p"·data-group-id=" | 392 | ····</span><span·class="p"·data-group-id="5890342218-53">[</span><span·class="p"·data-group-id="5890342218-53">]</span><span·class="p">.</span><span·class="w"> |
| 393 | </span><span·class="nf">gb_nodes</span><span·class="p"·data-group-id=" | 393 | </span><span·class="nf">gb_nodes</span><span·class="p"·data-group-id="5890342218-54">(</span><span·class="n">T</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">infinity</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ElementFun</span><span·class="p"·data-group-id="5890342218-54">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 394 | ····</span><span·class="nf">gb_nodes</span><span·class="p"·data-group-id=" | 394 | ····</span><span·class="nf">gb_nodes</span><span·class="p"·data-group-id="5890342218-55">(</span><span·class="n">T</span><span·class="p">,</span><span·class="w">·</span><span·class="o">-</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ElementFun</span><span·class="p"·data-group-id="[·...·truncated·by·diffoscope;·len:·10,·SHA:·43e83f4684a74ff0f71970d8cadaa8d49119d2b67e72e1bb7160dd008eabe6f7·...·]-55">)</span><span·class="p">;</span><span·class="w"> |
| 395 | </span><span·class="nf">gb_nodes</span><span·class="p"·data-group-id=" | 395 | </span><span·class="nf">gb_nodes</span><span·class="p"·data-group-id="5890342218-56">(</span><span·class="n">T</span><span·class="p">,</span><span·class="w">·</span><span·class="n">NElements</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ElementFun</span><span·class="p"·data-group-id="5890342218-56">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 396 | ····</span><span·class="nf">gb_iter</span><span·class="p"·data-group-id=" | 396 | ····</span><span·class="nf">gb_iter</span><span·class="p"·data-group-id="5890342218-57">(</span><span·class="nc">gb_trees</span><span·class="p">:</span><span·class="nf">iterator</span><span·class="p"·data-group-id="5890342218-58">(</span><span·class="n">T</span><span·class="p"·data-group-id="5890342218-58">)</span><span·class="[·...·truncated·by·diffoscope;·len:·189,·SHA:·de25961d25dbf63a236baee317dc109b5980f96db48199c1548451f57690b47d·...·]-57">)</span><span·class="p">.</span><span·class="w"> |
| 397 | </span><span·class="nf">gb_iter</span><span·class="p"·data-group-id=" | 397 | </span><span·class="nf">gb_iter</span><span·class="p"·data-group-id="5890342218-59">(</span><span·class="p">_</span><span·class="n">I</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">EFun</span><span·class="[·...·truncated·by·diffoscope;·len:·28,·SHA:·1be2a8a359fd5c00875b75c7ebdadd58c538813a11681b120c6f9bf2fb9cafd3·...·]-59">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 398 | ····</span><span·class="ss">'...'</span><span·class="p">;</span><span·class="w"> | 398 | ····</span><span·class="ss">'...'</span><span·class="p">;</span><span·class="w"> |
| 399 | </span><span·class="nf">gb_iter</span><span·class="p"·data-group-id=" | 399 | </span><span·class="nf">gb_iter</span><span·class="p"·data-group-id="5890342218-60">(</span><span·class="n">I0</span><span·class="p">,</span><span·class="w">·</span><span·class="n">N</span><span·class="p">,</span><span·class="w">·</span><span·class="n">EFun</span><span·class="p"·data-group-id="5890342218-60">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 400 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">gb_trees</span><span·class="p">:</span><span·class="nf">next</span><span·class="p"·data-group-id=" | 400 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">gb_trees</span><span·class="p">:</span><span·class="nf">next</span><span·class="p"·data-group-id="5890342218-61">(</span><span·class="n">I0</span><span·class="p"·data-group-id="5890342218-61">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 401 | ········</span><span·class="p"·data-group-id=" | 401 | ········</span><span·class="p"·data-group-id="5890342218-62">{</span><span·class="n">X</span><span·class="p">,</span><span·class="w">·</span><span·class="n">V</span><span·class="p">,</span><span·class="w">·</span><span·class="n">I</span><span·class="p"·data-group-id="5890342218-62">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 402 | ············</span><span·class="p"·data-group-id=" | 402 | ············</span><span·class="p"·data-group-id="5890342218-63">[</span><span·class="n">EFun</span><span·class="p"·data-group-id="5890342218-64">(</span><span·class="p"·data-group-id="5890342218-65">{</span><span·class="n">X</span><span·class="p">,</span><span·class="n">V</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·554,·SHA:·7e2431aefabed8b3848cb50c5f74561d0051c6b815c0b2a5cf38eaa974c0df02·...·]-63">]</span><span·class="p">;</span><span·class="w"> |
| 403 | ········</span><span·class="ss">none</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 403 | ········</span><span·class="ss">none</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 404 | ············</span><span·class="p"·data-group-id=" | 404 | ············</span><span·class="p"·data-group-id="5890342218-67">[</span><span·class="p"·data-group-id="5890342218-67">]</span><span·class="w"> |
| 405 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p><code·class="inline">TF</code>·is·the·traversal·function.·The·<code·class="inline">qlc</code>·module·requires·that·there·is·a·way·of | 405 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p><code·class="inline">TF</code>·is·the·traversal·function.·The·<code·class="inline">qlc</code>·module·requires·that·there·is·a·way·of |
| 406 | traversing·all·objects·of·the·data·structure.·<code·class="inline">gb_trees</code>·has·an·iterator | 406 | traversing·all·objects·of·the·data·structure.·<code·class="inline">gb_trees</code>·has·an·iterator |
| 407 | function·suitable·for·that·purpose.·Notice·that·for·each·object·returned,·a·new | 407 | function·suitable·for·that·purpose.·Notice·that·for·each·object·returned,·a·new |
| 408 | fun·is·created.·As·long·as·the·list·is·not·terminated·by·<code·class="inline">[]</code>,·it·is·assumed | 408 | fun·is·created.·As·long·as·the·list·is·not·terminated·by·<code·class="inline">[]</code>,·it·is·assumed |
| 409 | that·the·tail·of·the·list·is·a·nullary·function·and·that·calling·the·function | 409 | that·the·tail·of·the·list·is·a·nullary·function·and·that·calling·the·function |
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| Offset 713, 18 lines modified | Offset 713, 18 lines modified | ||
| 713 | ······<div·class="specs"> | 713 | ······<div·class="specs"> |
| 714 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·all(Pred,·Q·::·<a·href="#t:queue/1">queue</a>(Item))·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:boolean/0">boolean</a>()·when·Pred·::·fun((Item)·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:boolean/0">boolean</a>()).</pre> | 714 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·all(Pred,·Q·::·<a·href="#t:queue/1">queue</a>(Item))·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:boolean/0">boolean</a>()·when·Pred·::·fun((Item)·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:boolean/0">boolean</a>()).</pre> |
| 715 | ······</div> | 715 | ······</div> |
| 716 | <p>Returns·<code·class="inline">true</code>·if·<code·class="inline">Pred(Item)</code>·returns·<code·class="inline">true</code>·for·all·items·<code·class="inline">Item</code>·in·<code·class="inline">Q</code>, | 716 | <p>Returns·<code·class="inline">true</code>·if·<code·class="inline">Pred(Item)</code>·returns·<code·class="inline">true</code>·for·all·items·<code·class="inline">Item</code>·in·<code·class="inline">Q</code>, |
| 717 | otherwise·<code·class="inline">false</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">Queue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">from_list</span><span·class="p"·data-group-id="1 | 717 | otherwise·<code·class="inline">false</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">Queue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">from_list</span><span·class="p"·data-group-id="1550300440-1">(</span><span·class="p"·data-group-id="1550300440-2">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">4</span><span·clas[·...·truncated·by·diffoscope;·len:·133,·SHA:·71482172b35c0c468b9621385e867802c1a172b6cf0002ff9732ada179c4ea55·...·]-1">)</span><span·class="p">.</span><span·class="gp·unselectable"> |
| 718 | 2>·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">all</span><span·class="p"·data-group-id="1 | 718 | 2>·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">all</span><span·class="p"·data-group-id="1550300440-3">(</span><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="1550300440-4">(</span><span·class="n">E</span><span·class="p"·data-group-id="1550300440-4">)</span><span·class="w">·</span><span·class="p">-></span><s[·...·truncated·by·diffoscope;·len:·313,·SHA:·416634d17306d7a9493684fe53d5562686b1c52a992ab64f0547718e7d8442b7·...·]-3">)</span><span·class="p">.</span><span·class="w"> |
| 719 | </span><span·class="ss">false</span><span·class="gp·unselectable"> | 719 | </span><span·class="ss">false</span><span·class="gp·unselectable"> |
| 720 | 3>·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">all</span><span·class="p"·data-group-id="1 | 720 | 3>·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">all</span><span·class="p"·data-group-id="1550300440-5">(</span><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="1550300440-6">(</span><span·class="n">E</span><span·class="p"·data-group-id="1550300440-6">)</span><span·class="w">·</span><span·class="p">-></span><s[·...·truncated·by·diffoscope;·len:·313,·SHA:·d42a3705042ce185018177b23a30c75bc52f2aded4dd032cfda1454d68612022·...·]-5">)</span><span·class="p">.</span><span·class="w"> |
| 721 | </span><span·class="ss">true</span></code></pre> | 721 | </span><span·class="ss">true</span></code></pre> |
| 722 | ··</section> | 722 | ··</section> |
| 723 | </section> | 723 | </section> |
| 724 | <section·class="detail"·id="any/2"> | 724 | <section·class="detail"·id="any/2"> |
| 725 | ··<div·class="detail-header"> | 725 | ··<div·class="detail-header"> |
| 726 | ····<a·href="#any/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 726 | ····<a·href="#any/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 746, 18 lines modified | Offset 746, 18 lines modified | ||
| 746 | ······<div·class="specs"> | 746 | ······<div·class="specs"> |
| 747 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·any(Pred,·Q·::·<a·href="#t:queue/1">queue</a>(Item))·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:boolean/0">boolean</a>()·when·Pred·::·fun((Item)·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:boolean/0">boolean</a>()).</pre> | 747 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·any(Pred,·Q·::·<a·href="#t:queue/1">queue</a>(Item))·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:boolean/0">boolean</a>()·when·Pred·::·fun((Item)·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:boolean/0">boolean</a>()).</pre> |
| 748 | ······</div> | 748 | ······</div> |
| 749 | <p>Returns·<code·class="inline">true</code>·if·<code·class="inline">Pred(Item)</code>·returns·<code·class="inline">true</code>·for·at·least·one·item·<code·class="inline">Item</code>·in | 749 | <p>Returns·<code·class="inline">true</code>·if·<code·class="inline">Pred(Item)</code>·returns·<code·class="inline">true</code>·for·at·least·one·item·<code·class="inline">Item</code>·in |
| 750 | <code·class="inline">Q</code>,·otherwise·<code·class="inline">false</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">Queue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">from_list</span><span·class="p"·data-group-id=" | 750 | <code·class="inline">Q</code>,·otherwise·<code·class="inline">false</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">Queue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">from_list</span><span·class="p"·data-group-id="3711174456-1">(</span><span·class="p"·data-group-id="3711174456-2">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">4</span><span·cla[·...·truncated·by·diffoscope;·len:·134,·SHA:·a1c4e4acfe757ab68396df1c14412a3b8d4713e2554e0a39f95d7fcea24b6f37·...·]-1">)</span><span·class="p">.</span><span·class="gp·unselectable"> |
| 751 | 2>·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">any</span><span·class="p"·data-group-id=" | 751 | 2>·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">any</span><span·class="p"·data-group-id="3711174456-3">(</span><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="3711174456-4">(</span><span·class="n">E</span><span·class="p"·data-group-id="3711174456-4">)</span><span·class="w">·</span><span·class="p">-></span><[·...·truncated·by·diffoscope;·len:·315,·SHA:·bc03c02787fd56da4b7889f85f18ff41b1a9235db96b768143d310eab50baf47·...·]-3">)</span><span·class="p">.</span><span·class="w"> |
| 752 | </span><span·class="ss">false</span><span·class="gp·unselectable"> | 752 | </span><span·class="ss">false</span><span·class="gp·unselectable"> |
| 753 | 3>·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">any</span><span·class="p"·data-group-id=" | 753 | 3>·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">any</span><span·class="p"·data-group-id="3711174456-5">(</span><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="3711174456-6">(</span><span·class="n">E</span><span·class="p"·data-group-id="3711174456-6">)</span><span·class="w">·</span><span·class="p">-></span><[·...·truncated·by·diffoscope;·len:·314,·SHA:·1f6d94c5e3e7aea78498cfa3f4fb31730748f98a3513cdd51a60af1ad16007da·...·]-5">)</span><span·class="p">.</span><span·class="w"> |
| 754 | </span><span·class="ss">true</span></code></pre> | 754 | </span><span·class="ss">true</span></code></pre> |
| 755 | ··</section> | 755 | ··</section> |
| 756 | </section> | 756 | </section> |
| 757 | <section·class="detail"·id="delete/2"> | 757 | <section·class="detail"·id="delete/2"> |
| 758 | ··<div·class="detail-header"> | 758 | ··<div·class="detail-header"> |
| 759 | ····<a·href="#delete/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 759 | ····<a·href="#delete/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 779, 17 lines modified | Offset 779, 17 lines modified | ||
| 779 | ······<div·class="specs"> | 779 | ······<div·class="specs"> |
| 780 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·delete(Item,·Q1)·->·Q2·when·Item·::·T,·Q1·::·<a·href="#t:queue/1">queue</a>(T),·Q2·::·<a·href="#t:queue/1">queue</a>(T),·T·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> | 780 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·delete(Item,·Q1)·->·Q2·when·Item·::·T,·Q1·::·<a·href="#t:queue/1">queue</a>(T),·Q2·::·<a·href="#t:queue/1">queue</a>(T),·T·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 781 | ······</div> | 781 | ······</div> |
| 782 | <p>Returns·a·copy·of·<code·class="inline">Q1</code>·where·the·first·item·matching·<code·class="inline">Item</code>·is·deleted,·if·there | 782 | <p>Returns·a·copy·of·<code·class="inline">Q1</code>·where·the·first·item·matching·<code·class="inline">Item</code>·is·deleted,·if·there |
| 783 | is·such·an·item.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">Queue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">from_list</span><span·class="p"·data-group-id=" | 783 | is·such·an·item.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">Queue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">from_list</span><span·class="p"·data-group-id="3277786939-1">(</span><span·class="p"·data-group-id="3277786939-2">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">4</span><span·cla[·...·truncated·by·diffoscope;·len:·134,·SHA:·e3cd23679427a4cb99241386e5561d89234ac4cecd34a3ae69d6ed53b5c49deb·...·]-1">)</span><span·class="p">.</span><span·class="gp·unselectable"> |
| 784 | 2>·</span><span·class="n">Queue1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">delete</span><span·class="p"·data-group-id=" | 784 | 2>·</span><span·class="n">Queue1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">delete</span><span·class="p"·data-group-id="3277786939-3">(</span><span·class="mi">3</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Queue</span><span·class="p"·data-group-id="3277786939-3">)</span><span·class="p">.</span><span·class="gp·unselectable"> |
| 785 | 3>·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">member</span><span·class="p"·data-group-id=" | 785 | 3>·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">member</span><span·class="p"·data-group-id="3277786939-4">(</span><span·class="mi">3</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Queue1</span><span·class="p"·data-group-id="3277786939-4">)</span><span·class="p">.</span><span·class="w"> |
| 786 | </span><span·class="ss">false</span></code></pre> | 786 | </span><span·class="ss">false</span></code></pre> |
| 787 | ··</section> | 787 | ··</section> |
| 788 | </section> | 788 | </section> |
| 789 | <section·class="detail"·id="delete_r/2"> | 789 | <section·class="detail"·id="delete_r/2"> |
| 790 | ··<div·class="detail-header"> | 790 | ··<div·class="detail-header"> |
| 791 | ····<a·href="#delete_r/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 791 | ····<a·href="#delete_r/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 811, 18 lines modified | Offset 811, 18 lines modified | ||
| 811 | ······<div·class="specs"> | 811 | ······<div·class="specs"> |
| 812 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·delete_r(Item,·Q1)·->·Q2·when·Item·::·T,·Q1·::·<a·href="#t:queue/1">queue</a>(T),·Q2·::·<a·href="#t:queue/1">queue</a>(T),·T·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> | 812 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·delete_r(Item,·Q1)·->·Q2·when·Item·::·T,·Q1·::·<a·href="#t:queue/1">queue</a>(T),·Q2·::·<a·href="#t:queue/1">queue</a>(T),·T·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 813 | ······</div> | 813 | ······</div> |
| 814 | <p>Returns·a·copy·of·<code·class="inline">Q1</code>·where·the·last·item·matching·<code·class="inline">Item</code>·is·deleted,·if·there | 814 | <p>Returns·a·copy·of·<code·class="inline">Q1</code>·where·the·last·item·matching·<code·class="inline">Item</code>·is·deleted,·if·there |
| 815 | is·such·an·item.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">Queue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">from_list</span><span·class="p"·data-group-id=" | 815 | is·such·an·item.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">Queue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">from_list</span><span·class="p"·data-group-id="8403209008-1">(</span><span·class="p"·data-group-id="8403209008-2">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">4</span><span·cla[·...·truncated·by·diffoscope;·len:·183,·SHA:·9f2583d718b766d8c79a49bb4cf6f9909b943c6506d3115fef4811a93f5bd5be·...·]-1">)</span><span·class="p">.</span><span·class="gp·unselectable"> |
| 816 | 2>·</span><span·class="n">Queue1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">delete_r</span><span·class="p"·data-group-id=" | 816 | 2>·</span><span·class="n">Queue1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">delete_r</span><span·class="p"·data-group-id="8403209008-3">(</span><span·class="mi">3</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Queue</span><span·class="p"·data-group-id="8403209008-3">)</span><span·class="p">.</span><span·class="gp·unselectable"> |
| 817 | 3>·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">to_list</span><span·class="p"·data-group-id=" | 817 | 3>·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">to_list</span><span·class="p"·data-group-id="8403209008-4">(</span><span·class="n">Queue1</span><span·class="p"·data-group-id="8403209008-4">)</span><span·class="p">.</span><span·class="w"> |
| 818 | </span><span·class="p"·data-group-id=" | 818 | </span><span·class="p"·data-group-id="8403209008-5">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">5</span><span·class="[·...·truncated·by·diffoscope;·len:·28,·SHA:·95f23b1da6dd91b2a3d58211fed4e5ea7324fcc1ba9a1695f9ab83f6ce100f7c·...·]-5">]</span></code></pre> |
| 819 | ··</section> | 819 | ··</section> |
| 820 | </section> | 820 | </section> |
| 821 | <section·class="detail"·id="delete_with/2"> | 821 | <section·class="detail"·id="delete_with/2"> |
| 822 | ··<div·class="detail-header"> | 822 | ··<div·class="detail-header"> |
| 823 | ····<a·href="#delete_with/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 823 | ····<a·href="#delete_with/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 824 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 824 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 848, 18 lines modified | Offset 848, 18 lines modified | ||
| 848 | ·························Q1·::·<a·href="#t:queue/1">queue</a>(Item), | 848 | ·························Q1·::·<a·href="#t:queue/1">queue</a>(Item), |
| 849 | ·························Q2·::·<a·href="#t:queue/1">queue</a>(Item), | 849 | ·························Q2·::·<a·href="#t:queue/1">queue</a>(Item), |
| 850 | ·························Item·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> | 850 | ·························Item·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 851 | ······</div> | 851 | ······</div> |
| 852 | <p>Returns·a·copy·of·<code·class="inline">Q1</code>·where·the·first·item·for·which·<code·class="inline">Pred</code>·returns·<code·class="inline">true</code>·is | 852 | <p>Returns·a·copy·of·<code·class="inline">Q1</code>·where·the·first·item·for·which·<code·class="inline">Pred</code>·returns·<code·class="inline">true</code>·is |
| 853 | deleted,·if·there·is·such·an·item.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">Queue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">from_list</span><span·class="p"·data-group-id=" | 853 | deleted,·if·there·is·such·an·item.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">Queue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">from_list</span><span·class="p"·data-group-id="3583383060-1">(</span><span·class="p"·data-group-id="3583383060-2">[</span><span·class="mi">100</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·c[·...·truncated·by·diffoscope;·len:·185,·SHA:·ce51d021ffd9ed6cb3ae71548cdf99072c1ea7529866d2fafc9491c285c69149·...·]-1">)</span><span·class="p">.</span><span·class="gp·unselectable"> |
| 854 | 2>·</span><span·class="n">Queue1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">delete_with</span><span·class="p"·data-group-id=" | 854 | 2>·</span><span·class="n">Queue1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">delete_with</span><span·class="p"·data-group-id="3583383060-3">(</span><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="3583383060-4">(</span><span·class="n">E</span><span·class="p"·data-group-id="3583383060-4">)</span><span·class="w">·</span><span·class="p">-></span><[·...·truncated·by·diffoscope;·len:·264,·SHA:·d6c133b650d3ca5492b072b854ee2370120de27a1b1d662f1230bf8d3ae73adf·...·]-3">)</span><span·class="p">.</span><span·class="gp·unselectable"> |
| 855 | 3>·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">to_list</span><span·class="p"·data-group-id=" | 855 | 3>·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">to_list</span><span·class="p"·data-group-id="3583383060-5">(</span><span·class="n">Queue1</span><span·class="p"·data-group-id="3583383060-5">)</span><span·class="p">.</span><span·class="w"> |
| 856 | </span><span·class="p"·data-group-id=" | 856 | </span><span·class="p"·data-group-id="3583383060-6">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">5</span><span·class="[·...·truncated·by·diffoscope;·len:·28,·SHA:·b1f570b5ff1e663729d1a561655e27af92a9690f6d89d2d0c107d535f7af277b·...·]-6">]</span></code></pre> |
| 857 | ··</section> | 857 | ··</section> |
| 858 | </section> | 858 | </section> |
| 859 | <section·class="detail"·id="delete_with_r/2"> | 859 | <section·class="detail"·id="delete_with_r/2"> |
| 860 | ··<div·class="detail-header"> | 860 | ··<div·class="detail-header"> |
| 861 | ····<a·href="#delete_with_r/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 861 | ····<a·href="#delete_with_r/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 862 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 862 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 885, 18 lines modified | Offset 885, 18 lines modified | ||
| 885 | ···························Q1·::·<a·href="#t:queue/1">queue</a>(Item), | 885 | ···························Q1·::·<a·href="#t:queue/1">queue</a>(Item), |
| 886 | ···························Q2·::·<a·href="#t:queue/1">queue</a>(Item), | 886 | ···························Q2·::·<a·href="#t:queue/1">queue</a>(Item), |
| 887 | ···························Item·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> | 887 | ···························Item·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:term/0">term</a>().</pre> |
| 888 | ······</div> | 888 | ······</div> |
| 889 | <p>Returns·a·copy·of·<code·class="inline">Q1</code>·where·the·last·item·for·which·<code·class="inline">Pred</code>·returns·<code·class="inline">true</code>·is | 889 | <p>Returns·a·copy·of·<code·class="inline">Q1</code>·where·the·last·item·for·which·<code·class="inline">Pred</code>·returns·<code·class="inline">true</code>·is |
| 890 | deleted,·if·there·is·such·an·item.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">Queue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">from_list</span><span·class="p"·data-group-id=" | 890 | deleted,·if·there·is·such·an·item.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">Queue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">from_list</span><span·class="p"·data-group-id="8962042112-1">(</span><span·class="p"·data-group-id="8962042112-2">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">4</span><span·cla[·...·truncated·by·diffoscope;·len:·185,·SHA:·8c2f5528d87bea52e5316b07c7f92f26242a656946c3c84ce4cebf41d8f528c3·...·]-1">)</span><span·class="p">.</span><span·class="gp·unselectable"> |
| 891 | 2>·</span><span·class="n">Queue1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">delete_with</span><span·class="p"·data-group-id=" | 891 | 2>·</span><span·class="n">Queue1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">delete_with</span><span·class="p"·data-group-id="8962042112-3">(</span><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="8962042112-4">(</span><span·class="n">E</span><span·class="p"·data-group-id="8962042112-4">)</span><span·class="w">·</span><span·class="p">-></span><[·...·truncated·by·diffoscope;·len:·265,·SHA:·e8dee7973d98e6c44797f9463a015e3796547b4bec6554148c2c8056c291c63e·...·]-3">)</span><span·class="p">.</span><span·class="gp·unselectable"> |
| 892 | 3>·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">to_list</span><span·class="p"·data-group-id=" | 892 | 3>·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">to_list</span><span·class="p"·data-group-id="8962042112-5">(</span><span·class="n">Queue1</span><span·class="p"·data-group-id="8962042112-5">)</span><span·class="p">.</span><span·class="w"> |
| 893 | </span><span·class="p"·data-group-id=" | 893 | </span><span·class="p"·data-group-id="8962042112-6">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">5</span><span·class="[·...·truncated·by·diffoscope;·len:·28,·SHA:·9c88afeb7327e79ead7a3bd4717def6ad2a50e93d8c2b33eba0a8832144faf07·...·]-6">]</span></code></pre> |
| 894 | ··</section> | 894 | ··</section> |
| 895 | </section> | 895 | </section> |
| 896 | <section·class="detail"·id="filter/2"> | 896 | <section·class="detail"·id="filter/2"> |
| 897 | ··<div·class="detail-header"> | 897 | ··<div·class="detail-header"> |
| 898 | ····<a·href="#filter/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 898 | ····<a·href="#filter/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 899 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 899 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 917, 27 lines modified | Offset 917, 27 lines modified | ||
| 917 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·filter(Fun,·Q1·::·<a·href="#t:queue/1">queue</a>(Item))·->·Q2·::·<a·href="#t:queue/1">queue</a>(Item)·when·Fun·::·fun((Item)·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:boolean/0">boolean</a>()·|·[Item]).</pre> | 917 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·filter(Fun,·Q1·::·<a·href="#t:queue/1">queue</a>(Item))·->·Q2·::·<a·href="#t:queue/1">queue</a>(Item)·when·Fun·::·fun((Item)·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:boolean/0">boolean</a>()·|·[Item]).</pre> |
| 918 | ······</div> | 918 | ······</div> |
| 919 | <p>Returns·a·queue·<code·class="inline">Q2</code>·that·is·the·result·of·calling·<code·class="inline">Fun(Item)</code>·on·all·items·in | 919 | <p>Returns·a·queue·<code·class="inline">Q2</code>·that·is·the·result·of·calling·<code·class="inline">Fun(Item)</code>·on·all·items·in |
| 920 | <code·class="inline">Q1</code>.</p><p>If·<code·class="inline">Fun(Item)</code>·returns·<code·class="inline">true</code>,·<code·class="inline">Item</code>·is·copied·to·the·result·queue.·If·it | 920 | <code·class="inline">Q1</code>.</p><p>If·<code·class="inline">Fun(Item)</code>·returns·<code·class="inline">true</code>,·<code·class="inline">Item</code>·is·copied·to·the·result·queue.·If·it |
| 921 | returns·<code·class="inline">false</code>,·<code·class="inline">Item</code>·is·not·copied.·If·it·returns·a·list,·the·list·elements | 921 | returns·<code·class="inline">false</code>,·<code·class="inline">Item</code>·is·not·copied.·If·it·returns·a·list,·the·list·elements |
| 922 | are·inserted·instead·of·<code·class="inline">Item</code>·in·the·result·queue.</p><p><em>Example·1:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">Queue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">from_list</span><span·class="p"·data-group-id=" | 922 | are·inserted·instead·of·<code·class="inline">Item</code>·in·the·result·queue.</p><p><em>Example·1:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">Queue</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">from_list</span><span·class="p"·data-group-id="7513497919-1">(</span><span·class="p"·data-group-id="7513497919-2">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">4</span><span·cla[·...·truncated·by·diffoscope;·len:·134,·SHA:·f9b4c3dee3122f99d103d0fdbefff8bfdba731b9f3ea22c97c3ba3ef148980d8·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 923 | </span><span·class="p"·data-group-id=" | 923 | </span><span·class="p"·data-group-id="7513497919-3">{</span><span·class="p"·data-group-id="7513497919-4">[</span><span·class="mi">5</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="7513497919-4">]</span><span[·...·truncated·by·diffoscope;·len:·240,·SHA:·d20ff16b8dfd1b8fda7dd0e5794f6a981237f1aef742913095f9f1d2ff7d8e97·...·]-3">}</span><span·class="gp·unselectable"> |
| 924 | 2>·</span><span·class="n">Queue1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">filter</span><span·class="p"·data-group-id=" | 924 | 2>·</span><span·class="n">Queue1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">filter</span><span·class="p"·data-group-id="7513497919-6">(</span><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="7513497919-7">(</span><span·class="n">E</span><span·class="p"·data-group-id="7513497919-7">)</span><span·class="w">·</span><span·class="p">-></span><[·...·truncated·by·diffoscope;·len:·314,·SHA:·e0c2f703d88ad78a46173ab5ca31b16dcba5ae0f50f3aead0848c229c687c94f·...·]-6">)</span><span·class="p">.</span><span·class="w"> |
| 925 | </span><span·class="p"·data-group-id=" | 925 | </span><span·class="p"·data-group-id="7513497919-8">{</span><span·class="p"·data-group-id="7513497919-9">[</span><span·class="mi">5</span><span·class="p"·data-group-id="7513497919-9">]</span><span·class="p">,</span><span·class="p"·data-group-id="7513497919-10">[</span><span·class="mi">3</span>[·...·truncated·by·diffoscope;·len:·144,·SHA:·5821667456a81ec75c67ba50b4cd9092c167f257d3b8ef3a38bada963752bb42·...·]-8">}</span><span·class="gp·unselectable"> |
| 926 | 3>·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">to_list</span><span·class="p"·data-group-id=" | 926 | 3>·</span><span·class="nc">queue</span><span·class="p">:</span><span·class="nf">to_list</span><span·class="p"·data-group-id="7513497919-11">(</span><span·class="n">Queue1</span><span·class="p"·data-group-id="7513497919-11">)</span><span·class="p">.</span><span·class="w"> |
| 927 | </span><span·class="p"·data-group-id=" | 927 | </span><span·class="p"·data-group-id="7513497919-12">[</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">5</span><span·class="p"·data-group-id="7513497919-12">]</span></code></pre><p>So,·<code·class="inline">Fun(Item)</code>·returning·<code·class="inline">[Item]</code>·is·thereby·semantically·equivalent·to |
| 928 | returning·<code·class="inline">true</code>,·just·as·returning·<code·class="inline">[]</code>·is·semantically·equivalent·to·returning | 928 | returning·<code·class="inline">true</code>,·just·as·returning·<code·class="inline">[]</code>·is·semantically·equivalent·to·returning |
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| 197 | or·be·an·explicit·argument·and·return·value.</p><p>The·functions·with·implicit·state·operates·on·a·state·stored | 197 | or·be·an·explicit·argument·and·return·value.</p><p>The·functions·with·implicit·state·operates·on·a·state·stored |
| 198 | in·the·process·dictionary·under·the·key·<code·class="inline">rand_seed</code>.··If·that·key | 198 | in·the·process·dictionary·under·the·key·<code·class="inline">rand_seed</code>.··If·that·key |
| 199 | doesn't·exist·when·the·function·is·called,·<a·href="#seed/1"><code·class="inline">seed/1</code></a>·is·called·automatically | 199 | doesn't·exist·when·the·function·is·called,·<a·href="#seed/1"><code·class="inline">seed/1</code></a>·is·called·automatically |
| 200 | with·the·<a·href="#default-algorithm"><em>default·algorithm</em></a>·and·creates | 200 | with·the·<a·href="#default-algorithm"><em>default·algorithm</em></a>·and·creates |
| 201 | a·reasonably·unpredictable·seed.</p><p>The·functions·with·explicit·state·don't·use·the·process·dictionary.</p><h4><em>Examples</em></h4><p>Simple·use;·create·and·seed·the | 201 | a·reasonably·unpredictable·seed.</p><p>The·functions·with·explicit·state·don't·use·the·process·dictionary.</p><h4><em>Examples</em></h4><p>Simple·use;·create·and·seed·the |
| 202 | <a·href="#default-algorithm"><em>default·algorithm</em></a>·with·a·non-fixed·seed, | 202 | <a·href="#default-algorithm"><em>default·algorithm</em></a>·with·a·non-fixed·seed, |
| 203 | if·not·already·done,·and·generate·two·uniformly·distibuted | 203 | if·not·already·done,·and·generate·two·uniformly·distibuted |
| 204 | floating·point·numbers.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">R0</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">uniform</span><span·class="p"·data-group-id="9 | 204 | floating·point·numbers.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">R0</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">uniform</span><span·class="p"·data-group-id="9056702698-1">(</span><span·class="p"·data-group-id="9056702698-1">)</span><span·class="p">,</span><span·class="w"> |
| 205 | </span><span·class="n">R1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">uniform</span><span·class="p"·data-group-id="9 | 205 | </span><span·class="n">R1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">uniform</span><span·class="p"·data-group-id="9056702698-2">(</span><span·class="p"·data-group-id="9056702698-2">)</span><span·class="p">,</span></code></pre><p>Use·a·specified·algorithm:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">_</span><span·class="w">·</span><span·class="o">[·...·truncated·by·diffoscope;·len:·239,·SHA:·e49c2989cc693dc40a468e9facd5ebda17a2c1def102a8649762572b4bf2c923·...·]-1">)</span><span·class="p">,</span><span·class="w"> |
| 206 | </span><span·class="n">R2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">uniform</span><span·class="p"·data-group-id=" | 206 | </span><span·class="n">R2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">uniform</span><span·class="p"·data-group-id="5446767718-2">(</span><span·class="p"·data-group-id="5446767718-2">)</span><span·class="p">,</span></code></pre><p>Use·a·specified·algorithm·with·a·fixed·seed:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">_</span><span·class="w">·</sp[·...·truncated·by·diffoscope;·len:·595,·SHA:·ee24dfe13d1a549de090e5fb926af492ea4b1616931565b954a7b0e22427110a·...·]-1">)</span><span·class="p">,</span><span·class="w"> |
| 207 | </span><span·class="n">R3</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">uniform</span><span·class="p"·data-group-id=" | 207 | </span><span·class="n">R3</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">uniform</span><span·class="p"·data-group-id="0318343674-3">(</span><span·class="p"·data-group-id="0318343674-3">)</span><span·class="p">,</span></code></pre><p>Use·the·functional·API·with·a·non-fixed·seed:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">S0</span><span·class="w">·</[·...·truncated·by·diffoscope;·len:·258,·SHA:·be7f4c2080b7ee7602fd7ff547b9fc690c238c2bf5c57754034021aeace8f34a·...·]-1">)</span><span·class="p">,</span><span·class="w"> |
| 208 | </span><span·class="p"·data-group-id=" | 208 | </span><span·class="p"·data-group-id="2626459692-2">{</span><span·class="n">R4</span><span·class="p">,</span><span·class="w">·</span><span·class="n">S1</span><span·class="p"·data-group-id="2626459692-2">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class[·...·truncated·by·diffoscope;·len:·654,·SHA:·4fd141fa892b609625793eef3394ade2fd81d5f8b1511092d0228c831b899c15·...·]-1">)</span><span·class="p">,</span><span·class="w"> |
| 209 | </span><span·class="n">R6</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">uniform</span><span·class="p"·data-group-id=" | 209 | </span><span·class="n">R6</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">uniform</span><span·class="p"·data-group-id="0572224305-2">(</span><span·class="p"·data-group-id="0572224305-2">)</span><span·class="p">,</span><span·class="w"> |
| 210 | </span><span·class="n">SND0</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">math</span><span·class="p">:</span><span·class="nf">sqrt</span><span·class="p"·data-group-id=" | 210 | </span><span·class="n">SND0</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">math</span><span·class="p">:</span><span·class="nf">sqrt</span><span·class="p"·data-group-id="0572224305-3">(</span><span·class="o">-</span><span·class="mi">2</span><span·class="w">·</span><span·class="o">*</span><span·class="w">·</span><span·class="nc">math</span><span·class="p">:</span><span·class="nf">log</span><span·class="p"·data-group-id="057[·...·truncated·by·diffoscope;·len:·2113,·SHA:·27ab42d0a356af4b66faa0abaad72d6336ab49a43df4043172904975de8d9bd6·...·]-2">)</span><span·class="p">,</span></code></pre><h4>Quality·of·the·Generated·Numbers</h4><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>The·builtin·random·number·generator·algorithms·are·not·cryptographically |
| 211 | strong.·If·a·cryptographically·strong·random·number·generator·is·needed, | 211 | strong.·If·a·cryptographically·strong·random·number·generator·is·needed, |
| 212 | use·something·like·<a·href="../../../../lib/crypto-5.5.3/doc/html/crypto.html#rand_seed/0"><code·class="inline">crypto:rand_seed/0</code></a>.</p></section><p>For·all·these·generators·except·<code·class="inline">exro928ss</code>·and·<code·class="inline">exsss</code>·the·lowest·bit(s) | 212 | use·something·like·<a·href="../../../../lib/crypto-5.5.3/doc/html/crypto.html#rand_seed/0"><code·class="inline">crypto:rand_seed/0</code></a>.</p></section><p>For·all·these·generators·except·<code·class="inline">exro928ss</code>·and·<code·class="inline">exsss</code>·the·lowest·bit(s) |
| 213 | have·got·a·slightly·less·random·behaviour·than·all·other·bits. | 213 | have·got·a·slightly·less·random·behaviour·than·all·other·bits. |
| 214 | 1·bit·for·<code·class="inline">exrop</code>·(and·<code·class="inline">exsp</code>),·and·3·bits·for·<code·class="inline">exs1024s</code>.·See·for·example | 214 | 1·bit·for·<code·class="inline">exrop</code>·(and·<code·class="inline">exsp</code>),·and·3·bits·for·<code·class="inline">exs1024s</code>.·See·for·example |
| 215 | this·explanation·in·the | 215 | this·explanation·in·the |
| 216 | <a·href="http://xoroshiro.di.unimi.it/xoroshiro128plus.c">Xoroshiro128+</a> | 216 | <a·href="http://xoroshiro.di.unimi.it/xoroshiro128plus.c">Xoroshiro128+</a> |
| 217 | generator·source·code:</p><blockquote><p>Beside·passing·BigCrush,·this·generator·passes·the·PractRand·test·suite | 217 | generator·source·code:</p><blockquote><p>Beside·passing·BigCrush,·this·generator·passes·the·PractRand·test·suite |
| 218 | up·to·(and·included)·16TB,·with·the·exception·of·binary·rank·tests, | 218 | up·to·(and·included)·16TB,·with·the·exception·of·binary·rank·tests, |
| 219 | which·fail·due·to·the·lowest·bit·being·an·LFSR;·all·other·bits·pass·all | 219 | which·fail·due·to·the·lowest·bit·being·an·LFSR;·all·other·bits·pass·all |
| 220 | tests.·We·suggest·to·use·a·sign·test·to·extract·a·random·Boolean·value.</p></blockquote><p>If·this·is·a·problem;·to·generate·a·boolean·with·these·algorithms, | 220 | tests.·We·suggest·to·use·a·sign·test·to·extract·a·random·Boolean·value.</p></blockquote><p>If·this·is·a·problem;·to·generate·a·boolean·with·these·algorithms, |
| 221 | use·something·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="3 | 221 | use·something·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="3654377430-1">(</span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">uniform</span><span·class="p"·data-group-id="3654377430-2">(</span><span·class="mi">256</span><span·class="p"·data-group-id="3654377430-2">)</span><span·class="w">·</[·...·truncated·by·diffoscope;·len:·2109,·SHA:·0a61120d0d57ba4d1de08d42bde48ad7ab8e3295f30c6e56451601596336f63e·...·]-1">)</span></code></pre><p>The·floating·point·generating·functions·in·this·module·waste·the·lowest·bits |
| 222 | when·converting·from·an·integer·so·they·avoid·this·snag.</p><h2·id="module-niche-algorithms"·class="section-heading"> | 222 | when·converting·from·an·integer·so·they·avoid·this·snag.</p><h2·id="module-niche-algorithms"·class="section-heading"> |
| 223 | ··<a·href="#module-niche-algorithms"·class="hover-link"> | 223 | ··<a·href="#module-niche-algorithms"·class="hover-link"> |
| 224 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 224 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 225 | ··</a> | 225 | ··</a> |
| 226 | ··<span·class="text"><a·href=""·id="niche-algorithms"></a>·Niche·algorithms</span> | 226 | ··<span·class="text"><a·href=""·id="niche-algorithms"></a>·Niche·algorithms</span> |
| 227 | </h2> | 227 | </h2> |
| 228 | <p>The·<a·href="#niche-algorithms-api">niche·algorithms·API</a>·contains | 228 | <p>The·<a·href="#niche-algorithms-api">niche·algorithms·API</a>·contains |
| Offset 1871, 18 lines modified | Offset 1871, 18 lines modified | ||
| 1871 | <p>Generate·a·uniformly·distributed·random·number·<code·class="inline">0.0 =< X < 1.0</code>.</p><p>From·the·specified·<code·class="inline">State</code>,·generates·a·random·number·<code·class="inline">X ::</code> <a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:float/0"><code·class="inline">float/0</code></a>, | 1871 | <p>Generate·a·uniformly·distributed·random·number·<code·class="inline">0.0 =< X < 1.0</code>.</p><p>From·the·specified·<code·class="inline">State</code>,·generates·a·random·number·<code·class="inline">X ::</code> <a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:float/0"><code·class="inline">float/0</code></a>, |
| 1872 | uniformly·distributed·in·the·value·range·<code·class="inline">0.0·=<·X·<·1.0</code>. | 1872 | uniformly·distributed·in·the·value·range·<code·class="inline">0.0·=<·X·<·1.0</code>. |
| 1873 | Returns·the·number·<code·class="inline">X</code>·and·the·updated·<code·class="inline">NewState</code>.</p><p>The·generated·numbers·are·on·the·form·<code·class="inline">N * 2.0^(-53)</code>,·that·is; | 1873 | Returns·the·number·<code·class="inline">X</code>·and·the·updated·<code·class="inline">NewState</code>.</p><p>The·generated·numbers·are·on·the·form·<code·class="inline">N * 2.0^(-53)</code>,·that·is; |
| 1874 | equally·spaced·in·the·interval.</p><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>This·function·may·return·exactly·<code·class="inline">0.0</code>·which·can·be·fatal·for·certain | 1874 | equally·spaced·in·the·interval.</p><section·role="note"·class="admonition·warning"><h4·class="admonition-title·warning">Warning</h4><p>This·function·may·return·exactly·<code·class="inline">0.0</code>·which·can·be·fatal·for·certain |
| 1875 | applications.·If·that·is·undesired·you·can·use·<code·class="inline">(1.0 - rand:uniform())</code> | 1875 | applications.·If·that·is·undesired·you·can·use·<code·class="inline">(1.0 - rand:uniform())</code> |
| 1876 | to·get·the·interval·<code·class="inline">0.0 < X =< 1.0</code>,·or·instead·use·<a·href="#uniform_real/0"><code·class="inline">uniform_real/0</code></a>.</p><p>If·neither·endpoint·is·desired·you·can·achieve·the·range | 1876 | to·get·the·interval·<code·class="inline">0.0 < X =< 1.0</code>,·or·instead·use·<a·href="#uniform_real/0"><code·class="inline">uniform_real/0</code></a>.</p><p>If·neither·endpoint·is·desired·you·can·achieve·the·range |
| 1877 | <code·class="inline">0.0 < X < 1.0</code>·using·test·and·re-try·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">my_uniform</span><span·class="p"·data-group-id=" | 1877 | <code·class="inline">0.0 < X < 1.0</code>·using·test·and·re-try·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">my_uniform</span><span·class="p"·data-group-id="9550056528-1">(</span><span·class="p"·data-group-id="9550056528-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1878 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">uniform</span><span·class="p"·data-group-id=" | 1878 | ····</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">uniform</span><span·class="p"·data-group-id="9550056528-2">(</span><span·class="p"·data-group-id="9550056528-2">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 1879 | ········</span><span·class="n">X</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="mf">0.0</span><span·class="w">·</span><span·class="o"><</span><span·class="w">·</span><span·class="n">X</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">X</span><span·class="p">;</span><span·class="w"> | 1879 | ········</span><span·class="n">X</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="mf">0.0</span><span·class="w">·</span><span·class="o"><</span><span·class="w">·</span><span·class="n">X</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">X</span><span·class="p">;</span><span·class="w"> |
| 1880 | ········</span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">my_uniform</span><span·class="p"·data-group-id=" | 1880 | ········</span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">my_uniform</span><span·class="p"·data-group-id="9550056528-3">(</span><span·class="p"·data-group-id="9550056528-3">)</span><span·class="w"> |
| 1881 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre></section> | 1881 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre></section> |
| 1882 | ··</section> | 1882 | ··</section> |
| 1883 | </section> | 1883 | </section> |
| 1884 | <section·class="detail"·id="uniform_s/2"> | 1884 | <section·class="detail"·id="uniform_s/2"> |
| 1885 | ··<div·class="detail-header"> | 1885 | ··<div·class="detail-header"> |
| 1886 | ····<a·href="#uniform_s/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1886 | ····<a·href="#uniform_s/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 2027, 15 lines modified | Offset 2027, 15 lines modified | ||
| 2027 | a·new·state·<a·href="#t:mwc59_state/0"><code·class="inline">CX1</code></a>,·according·to·a·Multiply·With·Carry | 2027 | a·new·state·<a·href="#t:mwc59_state/0"><code·class="inline">CX1</code></a>,·according·to·a·Multiply·With·Carry |
| 2028 | generator,·which·is·an·efficient·implementation·of | 2028 | generator,·which·is·an·efficient·implementation·of |
| 2029 | a·Multiplicative·Congruential·Generator·with·a·power·of·2·multiplier | 2029 | a·Multiplicative·Congruential·Generator·with·a·power·of·2·multiplier |
| 2030 | and·a·prime·modulus.</p><p>This·generator·uses·the·multiplier·<code·class="inline">2^32</code>·and·the·modulus | 2030 | and·a·prime·modulus.</p><p>This·generator·uses·the·multiplier·<code·class="inline">2^32</code>·and·the·modulus |
| 2031 | <code·class="inline">16#7fa6502 * 2^32 - 1</code>,·which·have·been·selected,·in·collaboration·with | 2031 | <code·class="inline">16#7fa6502 * 2^32 - 1</code>,·which·have·been·selected,·in·collaboration·with |
| 2032 | Sebastiano·Vigna,·to·avoid·bignum·operations·and·still·get | 2032 | Sebastiano·Vigna,·to·avoid·bignum·operations·and·still·get |
| 2033 | good·statistical·quality.·It·has·been·named·"MWC59"·and·can·be·written·as:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">C</span><span·class="err"> </span><span·class="o">=</span><span·class="err"> </span><span·class="n">CX0</span><span·class="err"> </span><span·class="ow">bsr</span><span·class="err"> </span><span·class="mi">32</span><span·class="w"> | 2033 | good·statistical·quality.·It·has·been·named·"MWC59"·and·can·be·written·as:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">C</span><span·class="err"> </span><span·class="o">=</span><span·class="err"> </span><span·class="n">CX0</span><span·class="err"> </span><span·class="ow">bsr</span><span·class="err"> </span><span·class="mi">32</span><span·class="w"> |
| 2034 | </span><span·class="n">X</span><span·class="err"> </span><span·class="o">=</span><span·class="err"> </span><span·class="n">CX0</span><span·class="err"> </span><span·class="ow">band</span><span·class="err"> </span><span·class="p"·data-group-id=" | 2034 | </span><span·class="n">X</span><span·class="err"> </span><span·class="o">=</span><span·class="err"> </span><span·class="n">CX0</span><span·class="err"> </span><span·class="ow">band</span><span·class="err"> </span><span·class="p"·data-group-id="0211412948-1">(</span><span·class="p"·data-group-id="0211412948-2">(</span><span·class="mi">1</span><span·class="err"> </span><span·class="ow">bsl</span><span·class="err"> </span><span·class="mi">32</span><span·class="p"·data-group-id="0211412948-2">)</spa[·...·truncated·by·diffoscope;·len:·92,·SHA:·40535a6c1e2a95c953bf0fc21bf612f864ffa248695212d585fde095f6838095·...·]-1">)</span><span·class="p">)</span><span·class="w"> |
| 2035 | </span><span·class="n">CX1</span><span·class="err"> </span><span·class="o">=</span><span·class="err"> </span><span·class="mi">16#7fa6502</span><span·class="err"> </span><span·class="o">*</span><span·class="err"> </span><span·class="n">X</span><span·class="err"> </span><span·class="o">+</span><span·class="err"> </span><span·class="n">C</span></code></pre><p>Because·the·generator·uses·a·multiplier·that·is·a·power·of·2·it·gets | 2035 | </span><span·class="n">CX1</span><span·class="err"> </span><span·class="o">=</span><span·class="err"> </span><span·class="mi">16#7fa6502</span><span·class="err"> </span><span·class="o">*</span><span·class="err"> </span><span·class="n">X</span><span·class="err"> </span><span·class="o">+</span><span·class="err"> </span><span·class="n">C</span></code></pre><p>Because·the·generator·uses·a·multiplier·that·is·a·power·of·2·it·gets |
| 2036 | statistical·flaws·for·collision·tests·and·birthday·spacings·tests | 2036 | statistical·flaws·for·collision·tests·and·birthday·spacings·tests |
| 2037 | in·2·and·3·dimensions,·and·these·caveats·apply·even·when·looking | 2037 | in·2·and·3·dimensions,·and·these·caveats·apply·even·when·looking |
| 2038 | only·at·the·MWC·"digit",·that·is·the·low·32·bits·(the·multiplier) | 2038 | only·at·the·MWC·"digit",·that·is·the·low·32·bits·(the·multiplier) |
| 2039 | of·the·generator·state.··The·higher·bits·of·the·state·are·worse.</p><p>The·quality·of·the·output·value·improves·much·by·using·a·scrambler, | 2039 | of·the·generator·state.··The·higher·bits·of·the·state·are·worse.</p><p>The·quality·of·the·output·value·improves·much·by·using·a·scrambler, |
| 2040 | instead·of·just·taking·the·low·bits. | 2040 | instead·of·just·taking·the·low·bits. |
| 2041 | Function·<a·href="#mwc59_value32/1"><code·class="inline">mwc59_value32</code></a>·is·a·fast·scrambler | 2041 | Function·<a·href="#mwc59_value32/1"><code·class="inline">mwc59_value32</code></a>·is·a·fast·scrambler |
| Offset 458, 17 lines modified | Offset 458, 17 lines modified | ||
| 458 | ······<div·class="specs"> | 458 | ······<div·class="specs"> |
| 459 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·seed(A1,·A2,·A3)·->·undefined·|·<a·href="#t:ran/0">ran</a>()·when·A1·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:integer/0">integer</a>(),·A2·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:integer/0">integer</a>(),·A3·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:integer/0">integer</a>().</pre> | 459 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·seed(A1,·A2,·A3)·->·undefined·|·<a·href="#t:ran/0">ran</a>()·when·A1·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:integer/0">integer</a>(),·A2·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:integer/0">integer</a>(),·A3·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:integer/0">integer</a>().</pre> |
| 460 | ······</div> | 460 | ······</div> |
| 461 | <p>Seeds·random·number·generation·with·integer·values·in·the·process·dictionary·and | 461 | <p>Seeds·random·number·generation·with·integer·values·in·the·process·dictionary·and |
| 462 | returns·the·old·state.</p><p>The·following·is·an·easy·way·of·obtaining·a·unique·value·to·seed·with:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">random</span><span·class="p">:</span><span·class="nf">seed</span><span·class="p"·data-group-id=" | 462 | returns·the·old·state.</p><p>The·following·is·an·easy·way·of·obtaining·a·unique·value·to·seed·with:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">random</span><span·class="p">:</span><span·class="nf">seed</span><span·class="p"·data-group-id="7051218721-1">(</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">phash2</span><span·class="p"·data-group-id="7051218721-2">(</span><span·class="p"·data-group-id="7051218721-3">[</span><span·class="nf">node</span><span·class="p"·[·...·truncated·by·diffoscope;·len:·184,·SHA:·f46868bbcb9c4cf969583c90b8f4ca2f60eb44381096eec3ad0f1c142f7c03a4·...·]-2">)</span><span·class="p">,</span><span·class="w"> |
| 463 | ············</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">monotonic_time</span><span·class="p"·data-group-id=" | 463 | ············</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">monotonic_time</span><span·class="p"·data-group-id="7051218721-5">(</span><span·class="p"·data-group-id="7051218721-5">)</span><span·class="p">,</span><span·class="w"> |
| 464 | ············</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">unique_integer</span><span·class="p"·data-group-id=" | 464 | ············</span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nf">unique_integer</span><span·class="p"·data-group-id="7051218721-6">(</span><span·class="p"·data-group-id="7051218721-6">)</span><span·class="p"·data-group-id="7051218721-1">)</span></code></pre><p>For·details,·see·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#phash2/1"><code·class="inline">erlang:phash2/1</code></a>,·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#node/0"><code·class="inline">erlang:node/0</code></a>,·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#monotonic_time/0"><code·class="inline">erlang:monotonic_time/0</code></a>, |
| 465 | and·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#unique_integer/0"><code·class="inline">erlang:unique_integer/0</code></a>.</p> | 465 | and·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#unique_integer/0"><code·class="inline">erlang:unique_integer/0</code></a>.</p> |
| 466 | ··</section> | 466 | ··</section> |
| 467 | </section> | 467 | </section> |
| 468 | <section·class="detail"·id="uniform/0"> | 468 | <section·class="detail"·id="uniform/0"> |
| 469 | ··<div·class="detail-header"> | 469 | ··<div·class="detail-header"> |
| 470 | ····<a·href="#uniform/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 470 | ····<a·href="#uniform/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 1371, 17 lines modified | Offset 1371, 17 lines modified | ||
| 1371 | been·passed,·<a·href="#run/2"><code·class="inline">run/2,3</code></a>·is·committed·to·find·a·match·at·the·current | 1371 | been·passed,·<a·href="#run/2"><code·class="inline">run/2,3</code></a>·is·committed·to·find·a·match·at·the·current |
| 1372 | starting·point,·or·not·at·all,·for·example:</p><pre><code·class="text">a+(*COMMIT)b</code></pre><p>This·matches·"xxaab"·but·not·"aacaab".·It·can·be·thought·of·as·a·kind·of·dynamic | 1372 | starting·point,·or·not·at·all,·for·example:</p><pre><code·class="text">a+(*COMMIT)b</code></pre><p>This·matches·"xxaab"·but·not·"aacaab".·It·can·be·thought·of·as·a·kind·of·dynamic |
| 1373 | anchor,·or·"I've·started,·so·I·must·finish".·The·name·of·the·most·recently | 1373 | anchor,·or·"I've·started,·so·I·must·finish".·The·name·of·the·most·recently |
| 1374 | passed·(<em>MARK)·in·the·path·is·passed·back·when·(</em>COMMIT)·forces·a·match·failure.</p><p>If·more·than·one·backtracking·verb·exists·in·a·pattern,·a·different·one·that | 1374 | passed·(<em>MARK)·in·the·path·is·passed·back·when·(</em>COMMIT)·forces·a·match·failure.</p><p>If·more·than·one·backtracking·verb·exists·in·a·pattern,·a·different·one·that |
| 1375 | follows·(<em>COMMIT)·can·be·triggered·first,·so·merely·passing·(</em>COMMIT)·during·a | 1375 | follows·(<em>COMMIT)·can·be·triggered·first,·so·merely·passing·(</em>COMMIT)·during·a |
| 1376 | match·does·not·always·guarantee·that·a·match·must·be·at·this·starting·point.</p><p>Notice·that·(*COMMIT)·at·the·start·of·a·pattern·is·not·the·same·as·an·anchor, | 1376 | match·does·not·always·guarantee·that·a·match·must·be·at·this·starting·point.</p><p>Notice·that·(*COMMIT)·at·the·start·of·a·pattern·is·not·the·same·as·an·anchor, |
| 1377 | unless·the·PCRE·start-of-match·optimizations·are·turned·off,·as·shown·in·the | 1377 | unless·the·PCRE·start-of-match·optimizations·are·turned·off,·as·shown·in·the |
| 1378 | following·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">re</span><span·class="p">:</span><span·class="nf">run</span><span·class="p"·data-group-id="9624829707-1">(</span><span·class="s">"xyzabc"</span><span·class="p">,</span><span·class="s">"(*COMMIT)abc"</span><span·class="p">,</span><span·class="p"·data-group-id="9624829707-2">[</span><span·class="p"·data-group-id="9624829707-3">{</span><span·class="ss">capture</span><span·class="p">,</span><span·class="ss">all</span><span·class="p">,</span><span·class="ss">list</span><span·class="p"·data-group-id="9624829707-3">}</span><span·class="p"·data-group-id="9624829707-2">]</span><span·class="p"·data-group-id="9624829707-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 1379 | </span><span·class="p"·data-group-id="9624829707-4">{</span><span·class="ss">match</span><span·class="p">,</span><span·class="p"·data-group-id="9624829707-5">[</span><span·class="s">"abc"</span><span·class="p"·data-group-id="9624829707-5">]</span><span·class="p"·data-group-id="9624829707-4">}</span><span·class="gp·unselectable"> | ||
| 1380 | 1378 | following·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">re</span><span·class="p">:</span><span·class="nf">run</span><span·class="p"·data-group-id="1617871302-1">(</span><span·class="[·...·truncated·by·diffoscope;·len:·512,·SHA:·5975bec8de20fc95cb74ad1a01cc35bfc15e29348cb95dffb35f87686436e828·...·]">)</span><span·class="p">.</span><span·class="w"> | |
| 1379 | </span><span·class="p"·data-group-id="1617871302-4">{</span><span·class="ss">match</span><span·class="p">,</span><span·class="p"·data-group-id="1617871302-5">[</span><span·class="s">"abc"</span><span·class="p"·data-group-id="1617871302-5">]</span><span·class="p"·data-group-id="1617871302-4">}</span><span·class="gp·unselectable"> | ||
| 1380 | 2>·</span><span·class="nc">re</span><span·class="p">:</span><span·class="nf">run</span><span·class="p"·data-group-id="1617871302-6">(</span><span·class="s">"xyzabc"</span><span·class="p">,</span><span·class="s">"(*COMMIT)abc"</span><span·class="p">,</span><span·class="p"·data-group-id="1617871302-7">[</span><span·class="p"·data-group-id="1617871302-8">{</span><span·class="ss">capture</span><span·class="p">,</span><span·class="ss">all</span><span·class="p">,</span><span·class="ss">list</span><span·class="p"·data-group-id="1617871302-8">}</span><span·class="p">,</span><span·class="ss">no_start_optimize</span><span·class="p"·data-group-id="1617871302-7">]</span><span·class="p"·data-group-id="1617871302-6">)</span><span·class="p">.</span><span·class="w"> | ||
| 1381 | </span><span·class="ss">nomatch</span></code></pre><p>For·this·pattern,·PCRE·knows·that·any·match·must·start·with·"a",·so·the | 1381 | </span><span·class="ss">nomatch</span></code></pre><p>For·this·pattern,·PCRE·knows·that·any·match·must·start·with·"a",·so·the |
| 1382 | optimization·skips·along·the·subject·to·"a"·before·applying·the·pattern·to·the | 1382 | optimization·skips·along·the·subject·to·"a"·before·applying·the·pattern·to·the |
| 1383 | first·set·of·data.·The·match·attempt·then·succeeds.·In·the·second·call·the | 1383 | first·set·of·data.·The·match·attempt·then·succeeds.·In·the·second·call·the |
| 1384 | <code·class="inline">no_start_optimize</code>·disables·the·optimization·that·skips·along·to·the·first | 1384 | <code·class="inline">no_start_optimize</code>·disables·the·optimization·that·skips·along·to·the·first |
| 1385 | character.·The·pattern·is·now·applied·starting·at·"x",·and·so·the·(*COMMIT) | 1385 | character.·The·pattern·is·now·applied·starting·at·"x",·and·so·the·(*COMMIT) |
| 1386 | causes·the·match·to·fail·without·trying·any·other·starting·points.</p><p>The·following·verb·causes·the·match·to·fail·at·the·current·starting·position·in | 1386 | causes·the·match·to·fail·without·trying·any·other·starting·points.</p><p>The·following·verb·causes·the·match·to·fail·at·the·current·starting·position·in |
| 1387 | the·subject·if·there·is·a·later·matching·failure·that·causes·backtracking·to | 1387 | the·subject·if·there·is·a·later·matching·failure·that·causes·backtracking·to |
| Offset 2084, 40 lines modified | Offset 2084, 40 lines modified | ||
| 2084 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·inspect(MP,·Item)·->·{namelist,·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>()]}·when·MP·::·<a·href="#t:mp/0">mp</a>(),·Item·::·namelist.</pre> | 2084 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·inspect(MP,·Item)·->·{namelist,·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:binary/0">binary</a>()]}·when·MP·::·<a·href="#t:mp/0">mp</a>(),·Item·::·namelist.</pre> |
| 2085 | ······</div> | 2085 | ······</div> |
| 2086 | <p>Takes·a·compiled·regular·expression·and·an·item,·and·returns·the·relevant·data | 2086 | <p>Takes·a·compiled·regular·expression·and·an·item,·and·returns·the·relevant·data |
| 2087 | from·the·regular·expression.</p><p>The·only·supported·item·is·<code·class="inline">namelist</code>,·which·returns·the·tuple·<code·class="inline">{namelist,·[binary()]}</code>, | 2087 | from·the·regular·expression.</p><p>The·only·supported·item·is·<code·class="inline">namelist</code>,·which·returns·the·tuple·<code·class="inline">{namelist,·[binary()]}</code>, |
| 2088 | containing·the·names·of·all·(unique)·named·subpatterns·in·the·regular·expression.</p><p>For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="p"·data-group-id=" | 2088 | containing·the·names·of·all·(unique)·named·subpatterns·in·the·regular·expression.</p><p>For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="p"·data-group-id="8299288988-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">MP</span><span·class="p"·data-group-id="8299288988-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">re</span><span·cl[·...·truncated·by·diffoscope;·len:·217,·SHA:·d7f680e4e995d2814c17eb8db876a86672cfa7d4af9149228569624173309418·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 2089 | </span><span·class="p"·data-group-id=" | 2089 | </span><span·class="p"·data-group-id="8299288988-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="8299288988-4">{</span><span·class="ss">re_pattern</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="w"> |
| 2090 | ················</span><span·class="p"·data-group-id=" | 2090 | ················</span><span·class="p"·data-group-id="8299288988-5"><<</span><span·class="mi">69</span><span·class="p">,</span><span·class="mi">82</span><span·class="p">,</span><span·class="mi">67</span><span·class="p">,</span><span·class="mi">80</span><span·class="p">,</span><span·class="mi">119</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">255</span><span·class="p">,</span><span·class="mi">255</span><span·class="p">,</span><span·class="mi">255</span><span·class="p">,</span><span·class="mi">255</span><span·class="p">,</span><span·class="w"> |
| 2091 | ··················</span><span·class="mi">255</span><span·class="p">,</span><span·class="mi">255</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id=" | 2091 | ··················</span><span·class="mi">255</span><span·class="p">,</span><span·class="mi">255</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="8299288988-5">>></span><span·class="p"·data-group-id="8299288988-4">}</span><span·class="p"·data-group-id="8299288988-3">}</span><span·class="gp·unselectable"> |
| 2092 | 2>·</span><span·class="nc">re</span><span·class="p">:</span><span·class="nf">inspect</span><span·class="p"·data-group-id=" | 2092 | 2>·</span><span·class="nc">re</span><span·class="p">:</span><span·class="nf">inspect</span><span·class="p"·data-group-id="8299288988-6">(</span><span·class="n">MP</span><span·class="p">,</span><span·class="ss">namelist</span><span·class="p"·data-group-id="8299288988-6">)</span><span·class="p">.</span><span·class="w"> |
| 2093 | </span><span·class="p"·data-group-id=" | 2093 | </span><span·class="p"·data-group-id="8299288988-7">{</span><span·class="ss">namelist</span><span·class="p">,</span><span·class="p"·data-group-id="8299288988-8">[</span><span·class="p"·data-group-id="8299288988-9"><<</span><span·class="s">"A"</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·489,·SHA:·67814359f19896bf43bce1c66be936891d13fa58c0d6d7bd2dff52d0d20126d3·...·]-7">}</span><span·class="gp·unselectable"> |
| 2094 | 3>·</span><span·class="p"·data-group-id=" | 2094 | 3>·</span><span·class="p"·data-group-id="8299288988-12">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">MPD</span><span·class="p"·data-group-id="8299288988-12">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">re</span><span[·...·truncated·by·diffoscope;·len:·385,·SHA:·dca9295a14a47cd503f3df1e1e93c8a53f7c0d9c0a394880eea6049ffb41c104·...·]-13">)</span><span·class="p">.</span><span·class="w"> |
| 2095 | </span><span·class="p"·data-group-id=" | 2095 | </span><span·class="p"·data-group-id="8299288988-15">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="8299288988-16">{</span><span·class="ss">re_pattern</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="w"> |
| 2096 | ················</span><span·class="p"·data-group-id=" | 2096 | ················</span><span·class="p"·data-group-id="8299288988-17"><<</span><span·class="mi">69</span><span·class="p">,</span><span·class="mi">82</span><span·class="p">,</span><span·class="mi">67</span><span·class="p">,</span><span·class="mi">80</span><span·class="p">,</span><span·class="mi">119</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">8</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">255</span><span·class="p">,</span><span·class="mi">255</span><span·class="p">,</span><span·class="mi">255</span><span·class="p">,</span><span·class="mi">255</span><span·class="p">,</span><span·class="w"> |
| 2097 | ··················</span><span·class="mi">255</span><span·class="p">,</span><span·class="mi">255</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id=" | 2097 | ··················</span><span·class="mi">255</span><span·class="p">,</span><span·class="mi">255</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="8299288988-17">>></span><span·class="p"·data-group-id="8299288988-16">}</span><span·class="p"·data-group-id="8299288988-15">}</span><span·class="gp·unselectable"> |
| 2098 | 4>·</span><span·class="nc">re</span><span·class="p">:</span><span·class="nf">inspect</span><span·class="p"·data-group-id=" | 2098 | 4>·</span><span·class="nc">re</span><span·class="p">:</span><span·class="nf">inspect</span><span·class="p"·data-group-id="8299288988-18">(</span><span·class="n">MPD</span><span·class="p">,</span><span·class="ss">namelist</span><span·class="p"·data-group-id="8299288988-18">)</span><span·class="p">.</span><span·class="w"> |
| 2099 | </span><span·class="p"·data-group-id=" | 2099 | </span><span·class="p"·data-group-id="8299288988-19">{</span><span·class="ss">namelist</span><span·class="p">,</span><span·class="p"·data-group-id="8299288988-20">[</span><span·class="p"·data-group-id="8299288988-21"><<</span><span·class="s">"B"</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·312,·SHA:·95c88e487c1b0dd1d36a359c71e56336001498d69cacc2a8704c342fec35d1ec·...·]-19">}</span></code></pre><p>Notice·in·the·second·example·that·the·duplicate·name·only·occurs·once·in·the |
| 2100 | returned·list,·and·that·the·list·is·in·alphabetical·order·regardless·of·where | 2100 | returned·list,·and·that·the·list·is·in·alphabetical·order·regardless·of·where |
| 2101 | the·names·are·positioned·in·the·regular·expression.·The·order·of·the·names·is | 2101 | the·names·are·positioned·in·the·regular·expression.·The·order·of·the·names·is |
| 2102 | the·same·as·the·order·of·captured·subexpressions·if·<code·class="inline">{capture,·all_names}</code>·is | 2102 | the·same·as·the·order·of·captured·subexpressions·if·<code·class="inline">{capture,·all_names}</code>·is |
| 2103 | specified·as·an·option·to·<a·href="#run/3"><code·class="inline">run/3</code></a>.·You·can·therefore·create·a·name-to-value | 2103 | specified·as·an·option·to·<a·href="#run/3"><code·class="inline">run/3</code></a>.·You·can·therefore·create·a·name-to-value |
| 2104 | mapping·from·the·result·of·<a·href="#run/3"><code·class="inline">run/3</code></a>·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="p"·data-group-id=" | 2104 | mapping·from·the·result·of·<a·href="#run/3"><code·class="inline">run/3</code></a>·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="p"·data-group-id="0067296593-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">MP</span><span·class="p"·data-group-id="0067296593-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">re</span><span·cl[·...·truncated·by·diffoscope;·len:·217,·SHA:·d1411c1a8c4b3d349782bd3863cd3b8880c5eef1ae5b4ed7020fa688cf4b931e·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 2105 | </span><span·class="p"·data-group-id=" | 2105 | </span><span·class="p"·data-group-id="0067296593-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="0067296593-4">{</span><span·class="ss">re_pattern</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="w"> |
| 2106 | ················</span><span·class="p"·data-group-id=" | 2106 | ················</span><span·class="p"·data-group-id="0067296593-5"><<</span><span·class="mi">69</span><span·class="p">,</span><span·class="mi">82</span><span·class="p">,</span><span·class="mi">67</span><span·class="p">,</span><span·class="mi">80</span><span·class="p">,</span><span·class="mi">119</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">255</span><span·class="p">,</span><span·class="mi">255</span><span·class="p">,</span><span·class="mi">255</span><span·class="p">,</span><span·class="mi">255</span><span·class="p">,</span><span·class="w"> |
| 2107 | ··················</span><span·class="mi">255</span><span·class="p">,</span><span·class="mi">255</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id=" | 2107 | ··················</span><span·class="mi">255</span><span·class="p">,</span><span·class="mi">255</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="0067296593-5">>></span><span·class="p"·data-group-id="0067296593-4">}</span><span·class="p"·data-group-id="0067296593-3">}</span><span·class="gp·unselectable"> |
| 2108 | 2>·</span><span·class="p"·data-group-id=" | 2108 | 2>·</span><span·class="p"·data-group-id="0067296593-6">{</span><span·class="ss">namelist</span><span·class="p">,</span><span·class="w">·</span><span·class="n">N</span><span·class="p"·data-group-id="0067296593-6">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span[·...·truncated·by·diffoscope;·len:·251,·SHA:·85df69dba68eec482e335177e88afecc4dc244e8e7eba1617ba41448e7509005·...·]-7">)</span><span·class="p">.</span><span·class="w"> |
| 2109 | </span><span·class="p"·data-group-id="7641631819-8">{</span><span·class="ss">namelist</span><span·class="p">,</span><span·class="p"·data-group-id="7641631819-9">[</span><span·class="p"·data-group-id="7641631819-10"><<</span><span·class="s">"A"</span><span·class="p"·data-group-id="7641631819-10">>></span><span·class="p">,</span><span·class="p"·data-group-id="7641631819-11"><<</span><span·class="s">"B"</span><span·class="p"·data-group-id="7641631819-11">>></span><span·class="p">,</span><span·class="p"·data-group-id="7641631819-12"><<</span><span·class="s">"C"</span><span·class="p"·data-group-id="7641631819-12">>></span><span·class="p"·data-group-id="7641631819-9">]</span><span·class="p"·data-group-id="7641631819-8">}</span><span·class="gp·unselectable"> | ||
| 2110 | 3>·</span><span·class="p"·data-group-id="7641631819-13">{</span><span·class="ss">match</span><span·class="p">,</span><span·class="n">L</span><span·class="p"·data-group-id="7641631819-13">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">re</span><span·class="p">:</span><span·class="nf">run</span><span·class="p"·data-group-id="7641631819-14">(</span><span·class="s">"AA"</span><span·class="p">,</span><span·class="n">MP</span><span·class="p">,</span><span·class="p"·data-group-id="7641631819-15">[</span><span·class="p"·data-group-id="7641631819-16">{</span><span·class="ss">capture</span><span·class="p">,</span><span·class="ss">all_names</span><span·class="p">,</span><span·class="ss">binary</span><span·class="p"·data-group-id="7641631819-16">}</span><span·class="p"·data-group-id="7641631819-15">]</span><span·class="p"·data-group-id="7641631819-14">)</span><span·class="p">.</span><span·class="w"> | ||
| 2111 | </span><span·class="p"·data-group-id=" | 2109 | </span><span·class="p"·data-group-id="0067296593-8">{</span><span·class="ss">namelist</span><span·class="p">,</span><span·class="p"·data-group-id="0067296593-9">[</span><span·class="p"·data-group-id="0067296593-10"><<</span><span·class="s">"A"</span><span·class="p"·data-group-i[·...·truncated·by·diffoscope;·len:·493,·SHA:·b7f668b02117cd92c6d756337f14e9956124eb67c8b012ebc59627f4f88e5f60·...·]">}</span><span·class="gp·unselectable"> |
| 2110 | 3>·</span><span·class="p"·data-group-id="0067296593-13">{</span><span·class="ss">match</span><span·class="p">,</span><span·class="n">L</span><span·class="p"·data-group-id="0067296593-13">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">re</span><span·class="p">:</span><span·class="nf">run</span><span·class="p"·data-group-id="0067296593-14">(</span><span·class="s">"AA"</span><span·class="p">,</span><span·class="n">MP</span><span·class="p">,</span><span·class="p"·data-group-id="0067296593-15">[</span><span·class="p"·data-group-id="0067296593-16">{</span><span·class="ss">capture</span><span·class="p">,</span><span·class="ss">all_names</span><span·class="p">,</span><span·class="ss">binary</span><span·class="p"·data-group-id="0067296593-16">}</span><span·class="p"·data-group-id="0067296593-15">]</span><span·class="p"·data-group-id="0067296593-14">)</span><span·class="p">.</span><span·class="w"> | ||
| 2111 | </span><span·class="p"·data-group-id="0067296593-17">{</span><span·class="ss">match</span><span·class="p">,</span><span·class="p"·data-group-id="0067296593-18">[</span><span·class="p"·data-group-id="0067296593-19"><<</span><span·class="s">"A"</span><span·class="p"·data-group-id="0067296593-19">>></span><span·class="p">,</span><span·class="p"·data-group-id="0067296593-20"><<</span><span·class="p"·data-group-id="0067296593-20">>></span><span·class="p">,</span><span·class="p"·data-group-id="0067296593-21"><<</span><span·class="p"·data-group-id="0067296593-21">>></span><span·class="p"·data-group-id="0067296593-18">]</span><span·class="p"·data-group-id="0067296593-17">}</span><span·class="gp·unselectable"> | ||
| 2112 | 4>·</span><span·class="n">NameMap</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">zip</span><span·class="p"·data-group-id=" | 2112 | 4>·</span><span·class="n">NameMap</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">zip</span><span·class="p"·data-group-id="0067296593-22">(</span><span·class="n">N</span><span·class="p">,</span><span·class="n">L</span><span·class="p"·data-group-id="0067296593-22">)</span><span·class="p">.</span><span·class="w"> |
| 2113 | </span><span·class="p"·data-group-id=" | 2113 | </span><span·class="p"·data-group-id="0067296593-23">[</span><span·class="p"·data-group-id="0067296593-24">{</span><span·class="p"·data-group-id="0067296593-25"><<</span><span·class="s">"A"</span><span·class="p"·data-group-id="0067296593-25">>></span><span·class="p">,</sp[·...·truncated·by·diffoscope;·len:·1128,·SHA:·701fdbd52f14cf36eb9cb31521705146ef62026124cc7a994b2c1079e39e1860·...·]-23">]</span></code></pre> |
| 2114 | ··</section> | 2114 | ··</section> |
| 2115 | </section> | 2115 | </section> |
| 2116 | <section·class="detail"·id="replace/3"> | 2116 | <section·class="detail"·id="replace/3"> |
| 2117 | ··<div·class="detail-header"> | 2117 | ··<div·class="detail-header"> |
| 2118 | ····<a·href="#replace/3"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 2118 | ····<a·href="#replace/3"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 2119 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 2119 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 2198, 24 lines modified | Offset 2198, 24 lines modified | ||
| 2198 | both·the·regular·expression·and·<code·class="inline">Subject</code>·are·to·specified·as·valid·Unicode | 2198 | both·the·regular·expression·and·<code·class="inline">Subject</code>·are·to·specified·as·valid·Unicode |
| 2199 | <code·class="inline">charlist()</code>s.</p><p>If·the·replacement·is·given·as·a·string,·it·can·contain·the·special·character | 2199 | <code·class="inline">charlist()</code>s.</p><p>If·the·replacement·is·given·as·a·string,·it·can·contain·the·special·character |
| 2200 | <code·class="inline">&</code>,·which·inserts·the·whole·matching·expression·in·the·result,·and·the·special | 2200 | <code·class="inline">&</code>,·which·inserts·the·whole·matching·expression·in·the·result,·and·the·special |
| 2201 | sequence·<code·class="inline">\</code>N·(where·N·is·an·integer·>·0),·<code·class="inline">\g</code>N,·or·<code·class="inline">\g{</code>N<code·class="inline">}</code>,·resulting·in·the | 2201 | sequence·<code·class="inline">\</code>N·(where·N·is·an·integer·>·0),·<code·class="inline">\g</code>N,·or·<code·class="inline">\g{</code>N<code·class="inline">}</code>,·resulting·in·the |
| 2202 | subexpression·number·N,·is·inserted·in·the·result.·If·no·subexpression·with·that | 2202 | subexpression·number·N,·is·inserted·in·the·result.·If·no·subexpression·with·that |
| 2203 | number·is·generated·by·the·regular·expression,·nothing·is·inserted.</p><p>To·insert·an·&·or·a·\·in·the·result,·precede·it·with·a·\.·Notice·that·Erlang | 2203 | number·is·generated·by·the·regular·expression,·nothing·is·inserted.</p><p>To·insert·an·&·or·a·\·in·the·result,·precede·it·with·a·\.·Notice·that·Erlang |
| 2204 | already·gives·a·special·meaning·to·\·in·literal·strings,·so·a·single·\·must·be | 2204 | already·gives·a·special·meaning·to·\·in·literal·strings,·so·a·single·\·must·be |
| 2205 | written·as·<code·class="inline">"\\"</code>·and·therefore·a·double·\·as·<code·class="inline">"\\\\"</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">re</span><span·class="p">:</span><span·class="nf">replace</span><span·class="p"·data-group-id=" | 2205 | written·as·<code·class="inline">"\\"</code>·and·therefore·a·double·\·as·<code·class="inline">"\\\\"</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">re</span><span·class="p">:</span><span·class="nf">replace</span><span·class="p"·data-group-id="0008027328-1">(</span><span·class="s">"abcd"</span><span·class="p">,</span><span·class="s">"c"</span><span·class="p">,</span><span·class="s">"[&]"</span><span·class="p">,</span><span·class="p"·data-group-id="0008027328-2">[·...·truncated·by·diffoscope;·len:·289,·SHA:·afbe8dc1106dd10995a484729c817c2e35bbcdc85a599dc9dd42e3f08064aaa0·...·]8-1">)</span><span·class="p">.</span><span·class="w"> |
| 2206 | </span><span·class="s">"ab[c]d"</span></code></pre><p>while</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">re</span><span·class="p">:</span><span·class="nf">replace</span><span·class="p"·data-group-id=" | 2206 | </span><span·class="s">"ab[c]d"</span></code></pre><p>while</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">re</span><span·class="p">:</span><span·class="nf">replace</span><span·class="p"·data-group-id="5597022840-1">(</span><span·class="s">"abcd"</span><span·class="p">,</span><span·class="s">"c"</span><span·class="p">,</span><span·class="s">"[\\&]"</span><span·class="p">,</span><span·class="p"·data-group-id="5597022840-2[·...·truncated·by·diffoscope;·len:·292,·SHA:·dae17e2d5ac0a368f564b0ac419924954cdb44b5505751394d5d53d973059707·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 2207 | </span><span·class="s">"ab[&]d"</span></code></pre><p>If·the·replacement·is·given·as·a·fun,·it·will·be·called·with·the·whole·matching | 2207 | </span><span·class="s">"ab[&]d"</span></code></pre><p>If·the·replacement·is·given·as·a·fun,·it·will·be·called·with·the·whole·matching |
| 2208 | expression·as·the·first·argument·and·a·list·of·subexpression·matches·in·the | 2208 | expression·as·the·first·argument·and·a·list·of·subexpression·matches·in·the |
| 2209 | order·in·which·they·appear·in·the·regular·expression.·The·returned·value·will·be | 2209 | order·in·which·they·appear·in·the·regular·expression.·The·returned·value·will·be |
| 2210 | inserted·in·the·result.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="nc">re</span><span·class="p">:</span><span·class="nf">replace</span><span·class="p"·data-group-id=" | 2210 | inserted·in·the·result.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="nc">re</span><span·class="p">:</span><span·class="nf">replace</span><span·class="p"·data-group-id="0000951703-1">(</span><span·class="s">"abcd"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">".(.)"</span><span·class="p">,</span><span·class="w"> |
| 2211 | ····</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 2211 | ····</span><span·class="nf">fun</span><span·class="p"·data-group-id="0000951703-2">(</span><span·class="n">Whole</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0000951703-3">[</span><span·class="p"·data-group-id="0000951703-4"><<</span><span·class="n">C</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·133,·SHA:·258fcbe9f624c0267d23ee514b06b5e0438ad733dc8af7b760ec31374e230276·...·]-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 2212 | ·········</span><span·class="p"·data-group-id=" | 2212 | ·········</span><span·class="p"·data-group-id="0000951703-5"><<</span><span·class="sc">$#</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Whole</span><span·class="o">/</span><span·class="ss">binary</span><span·class="p">,</span><span·class="w">·</span><span·class="sc">$-</sp[·...·truncated·by·diffoscope;·len:·492,·SHA:·083b34262231fa388fd94c9a7e36b8d635e773870a86efe84ce1b329aed17d7c·...·]-5">>></span><span·class="w"> |
| 2213 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 2213 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 2214 | ····</span><span·class="p"·data-group-id=" | 2214 | ····</span><span·class="p"·data-group-id="0000951703-7">[</span><span·class="p"·data-group-id="0000951703-8">{</span><span·class="ss">return</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">list</span><span·class="p"·data-group-id="0000951703-8">}</span><span·class="p"·data-g[·...·truncated·by·diffoscope;·len:·72,·SHA:·0fcb00cb3141344d73d2c84a01895b40179f09ac1ef48b56bc0e6164ec69cafa·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 2215 | </span><span·class="s">"#ab-B#cd"</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Non-matching·optional·subexpressions·will·not·be·included·in·the·list·of | 2215 | </span><span·class="s">"#ab-B#cd"</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Non-matching·optional·subexpressions·will·not·be·included·in·the·list·of |
| 2216 | subexpression·matches·if·they·are·the·last·subexpressions·in·the·regular | 2216 | subexpression·matches·if·they·are·the·last·subexpressions·in·the·regular |
| 2217 | expression.</p><p><em>Example:</em></p><p>The·regular·expression·<code·class="inline">"(a)(b)?(c)?"</code>·("a",·optionally·followed·by·"b", | 2217 | expression.</p><p><em>Example:</em></p><p>The·regular·expression·<code·class="inline">"(a)(b)?(c)?"</code>·("a",·optionally·followed·by·"b", |
| 2218 | optionally·followed·by·"c")·will·create·the·following·subexpression·lists:</p><ul><li><code·class="inline">[<<"a">>,·<<"b">>,·<<"c">>]</code>·when·applied·to·the·string·<code·class="inline">"abc"</code></li><li><code·class="inline">[<<"a">>,·<<>>,·<<"c">>]</code>·when·applied·to·the·string·<code·class="inline">"acx"</code></li><li><code·class="inline">[<<"a">>,·<<"b">>]</code>·when·applied·to·the·string·<code·class="inline">"abx"</code></li><li><code·class="inline">[<<"a">>]</code>·when·applied·to·the·string·<code·class="inline">"axx"</code></li></ul></section><p>As·with·<a·href="#run/3"><code·class="inline">run/3</code></a>,·compilation·errors·raise·the·<code·class="inline">badarg</code>·exception. | 2218 | optionally·followed·by·"c")·will·create·the·following·subexpression·lists:</p><ul><li><code·class="inline">[<<"a">>,·<<"b">>,·<<"c">>]</code>·when·applied·to·the·string·<code·class="inline">"abc"</code></li><li><code·class="inline">[<<"a">>,·<<>>,·<<"c">>]</code>·when·applied·to·the·string·<code·class="inline">"acx"</code></li><li><code·class="inline">[<<"a">>,·<<"b">>]</code>·when·applied·to·the·string·<code·class="inline">"abx"</code></li><li><code·class="inline">[<<"a">>]</code>·when·applied·to·the·string·<code·class="inline">"axx"</code></li></ul></section><p>As·with·<a·href="#run/3"><code·class="inline">run/3</code></a>,·compilation·errors·raise·the·<code·class="inline">badarg</code>·exception. |
| 2219 | <a·href="#compile/2"><code·class="inline">compile/2</code></a>·can·be·used·to·get·more·information·about·the·error.</p> | 2219 | <a·href="#compile/2"><code·class="inline">compile/2</code></a>·can·be·used·to·get·more·information·about·the·error.</p> |
| 2220 | ··</section> | 2220 | ··</section> |
| 2221 | </section> | 2221 | </section> |
| Offset 2320, 27 lines modified | Offset 2320, 27 lines modified | ||
| 2320 | any·matching·subexpressions·(or·as·specified·by·option·<code·class="inline">capture</code>.·The | 2320 | any·matching·subexpressions·(or·as·specified·by·option·<code·class="inline">capture</code>.·The |
| 2321 | <code·class="inline">Captured</code>·part·of·the·return·value·is·hence·a·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:list/0"><code·class="inline">list/0</code></a>·of·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:list/0"><code·class="inline">list/0</code></a>s·when | 2321 | <code·class="inline">Captured</code>·part·of·the·return·value·is·hence·a·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:list/0"><code·class="inline">list/0</code></a>·of·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:list/0"><code·class="inline">list/0</code></a>s·when |
| 2322 | this·option·is·specified.</p><p>The·interaction·of·option·<code·class="inline">global</code>·with·a·regular·expression·that·matches·an | 2322 | this·option·is·specified.</p><p>The·interaction·of·option·<code·class="inline">global</code>·with·a·regular·expression·that·matches·an |
| 2323 | empty·string·surprises·some·users.·When·option·<code·class="inline">global</code>·is·specified, | 2323 | empty·string·surprises·some·users.·When·option·<code·class="inline">global</code>·is·specified, |
| 2324 | <a·href="#run/3"><code·class="inline">run/3</code></a>·handles·empty·matches·in·the·same·way·as·Perl:·a | 2324 | <a·href="#run/3"><code·class="inline">run/3</code></a>·handles·empty·matches·in·the·same·way·as·Perl:·a |
| 2325 | zero-length·match·at·any·point·is·also·retried·with·options | 2325 | zero-length·match·at·any·point·is·also·retried·with·options |
| 2326 | <code·class="inline">[anchored,·notempty_atstart]</code>.·If·that·search·gives·a·result·of·length·>·0, | 2326 | <code·class="inline">[anchored,·notempty_atstart]</code>.·If·that·search·gives·a·result·of·length·>·0, |
| 2327 | the·result·is·included.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">re</span><span·class="p">:</span><span·class="nf">run</span><span·class="p"·data-group-id=" | 2327 | the·result·is·included.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">re</span><span·class="p">:</span><span·class="nf">run</span><span·class="p"·data-group-id="8887811130-1">(</span><span·class="s">"cat"</span><span·class="p">,</span><span·class="s">"(|at)"</span><span·class="p">,</span><span·class="p"·data-group-id="8887811130-2">[</span><span·class="ss">global</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·69,·SHA:·015c351708f878730182423dc47a20022d4e632346e2fa9460a98bdf5c9d1b4c·...·]-1">)</span><span·class="p">.</span></code></pre><p>The·following·matchings·are·performed:</p><ul><li><p><strong>At·offset·<code·class="inline">0</code></strong>·-·The·regular·expression·<code·class="inline">(|at)</code>·first·match·at·the |
| 2328 | initial·position·of·string·<code·class="inline">cat</code>,·giving·the·result·set·<code·class="inline">[{0,0},{0,0}]</code>·(the | 2328 | initial·position·of·string·<code·class="inline">cat</code>,·giving·the·result·set·<code·class="inline">[{0,0},{0,0}]</code>·(the |
| 2329 | second·<code·class="inline">{0,0}</code>·is·because·of·the·subexpression·marked·by·the·parentheses). | 2329 | second·<code·class="inline">{0,0}</code>·is·because·of·the·subexpression·marked·by·the·parentheses). |
| 2330 | As·the·length·of·the·match·is·0,·we·do·not·advance·to·the·next·position·yet.</p></li><li><p><strong>At·offset·<code·class="inline">0</code>·with·<code·class="inline">[anchored,·notempty_atstart]</code></strong>·-·The·search·is | 2330 | As·the·length·of·the·match·is·0,·we·do·not·advance·to·the·next·position·yet.</p></li><li><p><strong>At·offset·<code·class="inline">0</code>·with·<code·class="inline">[anchored,·notempty_atstart]</code></strong>·-·The·search·is |
| 2331 | retried·with·options·<code·class="inline">[anchored,·notempty_atstart]</code>·at·the·same·position, | 2331 | retried·with·options·<code·class="inline">[anchored,·notempty_atstart]</code>·at·the·same·position, |
| 2332 | which·does·not·give·any·interesting·result·of·longer·length,·so·the·search | 2332 | which·does·not·give·any·interesting·result·of·longer·length,·so·the·search |
| 2333 | position·is·advanced·to·the·next·character·(<code·class="inline">a</code>).</p></li><li><p><strong>At·offset·<code·class="inline">1</code></strong>·-·The·search·results·in·<code·class="inline">[{1,0},{1,0}]</code>,·so·this·search·is | 2333 | position·is·advanced·to·the·next·character·(<code·class="inline">a</code>).</p></li><li><p><strong>At·offset·<code·class="inline">1</code></strong>·-·The·search·results·in·<code·class="inline">[{1,0},{1,0}]</code>,·so·this·search·is |
| 2334 | also·repeated·with·the·extra·options.</p></li><li><p><strong>At·offset·<code·class="inline">1</code>·with·<code·class="inline">[anchored,·notempty_atstart]</code></strong>·-·Alternative·<code·class="inline">ab</code>·is | 2334 | also·repeated·with·the·extra·options.</p></li><li><p><strong>At·offset·<code·class="inline">1</code>·with·<code·class="inline">[anchored,·notempty_atstart]</code></strong>·-·Alternative·<code·class="inline">ab</code>·is |
| 2335 | found·and·the·result·is·[{1,2},{1,2}].·The·result·is·added·to·the·list | 2335 | found·and·the·result·is·[{1,2},{1,2}].·The·result·is·added·to·the·list |
| 2336 | of·results·and·the·position·in·the·search·string·is·advanced·two·steps.</p></li><li><p><strong>At·offset·<code·class="inline">3</code></strong>·-·The·search·once·again·matches·the·empty·string,·giving | 2336 | of·results·and·the·position·in·the·search·string·is·advanced·two·steps.</p></li><li><p><strong>At·offset·<code·class="inline">3</code></strong>·-·The·search·once·again·matches·the·empty·string,·giving |
| 2337 | <code·class="inline">[{3,0},{3,0}]</code>.</p></li><li><p><strong>At·offset·<code·class="inline">1</code>·with·<code·class="inline">[anchored,·notempty_atstart]</code></strong>·-·This·gives·no·result | 2337 | <code·class="inline">[{3,0},{3,0}]</code>.</p></li><li><p><strong>At·offset·<code·class="inline">1</code>·with·<code·class="inline">[anchored,·notempty_atstart]</code></strong>·-·This·gives·no·result |
| 2338 | of·length·>·0·and·we·are·at·the·last·position,·so·the·global·search·is | 2338 | of·length·>·0·and·we·are·at·the·last·position,·so·the·global·search·is |
| 2339 | complete.</p></li></ul><p>The·result·of·the·call·is:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 2339 | complete.</p></li></ul><p>The·result·of·the·call·is:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="1500209060-1">{</span><span·class="ss">match</span><span·class="p">,</span><span·class="p"·data-group-id="1500209060-2">[</span><span·class="p"·data-group-id="1500209060-3">[</span><span·class="p"·data-group-id="1500209060-4">{</span><span·class="mi">0</sp[·...·truncated·by·diffoscope;·len:·2008,·SHA:·c79dfb25e6bdf40d141d7587c174f3c21f081ddbc35972de4fbf6d65695ac29e·...·]-1">}</span></code></pre></li><li><p><strong><code·class="inline">notempty</code></strong>·-·An·empty·string·is·not·considered·to·be·a·valid·match·if·this |
| 2340 | option·is·specified.·If·alternatives·in·the·pattern·exist,·they·are·tried.·If | 2340 | option·is·specified.·If·alternatives·in·the·pattern·exist,·they·are·tried.·If |
| 2341 | all·the·alternatives·match·the·empty·string,·the·entire·match·fails.</p><p><em>Example:</em></p><p>If·the·following·pattern·is·applied·to·a·string·not·beginning·with·"a"·or·"b", | 2341 | all·the·alternatives·match·the·empty·string,·the·entire·match·fails.</p><p><em>Example:</em></p><p>If·the·following·pattern·is·applied·to·a·string·not·beginning·with·"a"·or·"b", |
| 2342 | it·would·normally·match·the·empty·string·at·the·start·of·the·subject:</p><pre><code·class="text">a?b?</code></pre><p>With·option·<code·class="inline">notempty</code>,·this·match·is·invalid,·so·<a·href="#run/3"><code·class="inline">run/3</code></a>·searches | 2342 | it·would·normally·match·the·empty·string·at·the·start·of·the·subject:</p><pre><code·class="text">a?b?</code></pre><p>With·option·<code·class="inline">notempty</code>,·this·match·is·invalid,·so·<a·href="#run/3"><code·class="inline">run/3</code></a>·searches |
| 2343 | further·into·the·string·for·occurrences·of·"a"·or·"b".</p></li><li><p><strong><code·class="inline">notempty_atstart</code></strong>·-·Like·<code·class="inline">notempty</code>,·except·that·an·empty·string·match | 2343 | further·into·the·string·for·occurrences·of·"a"·or·"b".</p></li><li><p><strong><code·class="inline">notempty_atstart</code></strong>·-·Like·<code·class="inline">notempty</code>,·except·that·an·empty·string·match |
| 2344 | that·is·not·at·the·start·of·the·subject·is·permitted.·If·the·pattern·is | 2344 | that·is·not·at·the·start·of·the·subject·is·permitted.·If·the·pattern·is |
| 2345 | anchored,·such·a·match·can·occur·only·if·the·pattern·contains·\K.</p><p>Perl·has·no·direct·equivalent·of·<code·class="inline">notempty</code>·or·<code·class="inline">notempty_atstart</code>,·but·it·does | 2345 | anchored,·such·a·match·can·occur·only·if·the·pattern·contains·\K.</p><p>Perl·has·no·direct·equivalent·of·<code·class="inline">notempty</code>·or·<code·class="inline">notempty_atstart</code>,·but·it·does |
| 2346 | make·a·special·case·of·a·pattern·match·of·the·empty·string·within·its·split() | 2346 | make·a·special·case·of·a·pattern·match·of·the·empty·string·within·its·split() |
| Offset 2403, 20 lines modified | Offset 2403, 20 lines modified | ||
| 2403 | than·the·total·number·of·calls,·because·not·all·calls·to·match()·are | 2403 | than·the·total·number·of·calls,·because·not·all·calls·to·match()·are |
| 2404 | recursive.·This·limit·is·of·use·only·if·it·is·set·smaller·than | 2404 | recursive.·This·limit·is·of·use·only·if·it·is·set·smaller·than |
| 2405 | match_limit.</p><p>Limiting·the·recursion·depth·limits·the·amount·of·machine·stack·that | 2405 | match_limit.</p><p>Limiting·the·recursion·depth·limits·the·amount·of·machine·stack·that |
| 2406 | can·be·used,·or,·when·PCRE·has·been·compiled·to·use·memory·on·the·heap | 2406 | can·be·used,·or,·when·PCRE·has·been·compiled·to·use·memory·on·the·heap |
| 2407 | instead·of·the·stack,·the·amount·of·heap·memory·that·can·be·used.</p></blockquote><p>The·Erlang·VM·uses·a·PCRE·library·where·heap·memory·is·used·when·regular | 2407 | instead·of·the·stack,·the·amount·of·heap·memory·that·can·be·used.</p></blockquote><p>The·Erlang·VM·uses·a·PCRE·library·where·heap·memory·is·used·when·regular |
| 2408 | expression·match·recursion·occurs.·This·therefore·limits·the·use·of·machine | 2408 | expression·match·recursion·occurs.·This·therefore·limits·the·use·of·machine |
| 2409 | heap,·not·C·stack.</p><p>Specifying·a·lower·value·can·result·in·matches·with·deep·recursion·failing, | 2409 | heap,·not·C·stack.</p><p>Specifying·a·lower·value·can·result·in·matches·with·deep·recursion·failing, |
| 2410 | when·they·should·have·matched:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">re</span><span·class="p">:</span><span·class="nf">run</span><span·class="p"·data-group-id=" | 2410 | when·they·should·have·matched:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">re</span><span·class="p">:</span><span·class="nf">run</span><span·class="p"·data-group-id="9922774293-1">(</span><span·class="s">"aaaaaaaaaaaaaz"</span><span·class="p">,</span><span·class="s">"(a+)*z"</span><span·class="p"·data-group-id="9922774293-1">)</span><span·class="p">.</span><span·class="w"> |
| 2411 | </span><span·class="p"·data-group-id="0391831376-2">{</span><span·class="ss">match</span><span·class="p">,</span><span·class="p"·data-group-id="0391831376-3">[</span><span·class="p"·data-group-id="0391831376-4">{</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">14</span><span·class="p"·data-group-id="0391831376-4">}</span><span·class="p">,</span><span·class="p"·data-group-id="0391831376-5">{</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">13</span><span·class="p"·data-group-id="0391831376-5">}</span><span·class="p"·data-group-id="0391831376-3">]</span><span·class="p"·data-group-id="0391831376-2">}</span><span·class="gp·unselectable"> | ||
| 2412 | 2411 | </span><span·class="p"·data-group-id="9922774293-2">{</span><span·class="ss">match</span><span·class="p">,</span><span·class="p"·data-group-id="9922774293-3">[</span><span·class="p"·data-group-id="9922774293-4">{</span><span·class="mi">0</span><span·class=[·...·truncated·by·diffoscope;·len:·430,·SHA:·a915bf6b54ae537b85e022ff9def836702664298c629794acfb79b4daa69ee33·...·]"> | |
| 2412 | 2>·</span><span·class="nc">re</span><span·class="p">:</span><span·class="nf">run</span><span·class="p"·data-group-id="9922774293-6">(</span><span·class="s">"aaaaaaaaaaaaaz"</span><span·class="p">,</span><span·class="s">"(a+)*z"</span><span·class="p">,</span><span·class="p"·data-group-id="9922774293-7">[</span><span·class="p"·data-group-id="9922774293-8">{</span><span·class="ss">match_limit_recursion</span><span·class="p">,</span><span·class="mi">5</span><span·class="p"·data-group-id="9922774293-8">}</span><span·class="p"·data-group-id="9922774293-7">]</span><span·class="p"·data-group-id="9922774293-6">)</span><span·class="p">.</span><span·class="w"> | ||
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| 118 | <div·id="search"> | 118 | <div·id="search"> |
| 119 | ··<h1> | 119 | ··<h1> |
| 120 | ····<span></span> | 120 | ····<span></span> |
| 121 | ··</h1> | 121 | ··</h1> |
| 122 | ··<div·class="loading"><div></div><div></div><div></div><div></div></div> | 122 | ··<div·class="loading"><div></div><div></div><div></div><div></div></div> |
| 123 | </div> | 123 | </div> |
| 124 | <script·src="dist/search_data- | 124 | <script·src="dist/search_data-A1A25C0C.js"></script> |
| 125 | ····<footer·class="footer"> | 125 | ····<footer·class="footer"> |
| 126 | ······<p> | 126 | ······<p> |
| 127 | ········<span·class="line"> | 127 | ········<span·class="line"> |
| 128 | ··········<button·class="a-main·footer-button·display-quick-switch"·title="Search·HexDocs·packages"> | 128 | ··········<button·class="a-main·footer-button·display-quick-switch"·title="Search·HexDocs·packages"> |
| 129 | ············Search·HexDocs | 129 | ············Search·HexDocs |
| 130 | ··········</button> | 130 | ··········</button> |
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| 152 | <p>The·following·functions·in·this·module·also·exist·and·provide·the·same | 152 | <p>The·following·functions·in·this·module·also·exist·and·provide·the·same |
| 153 | functionality·in·the·<a·href="gb_sets.html"><code·class="inline">gb_sets</code></a>·and·<a·href="ordsets.html"><code·class="inline">ordsets</code></a>·modules.·That·is,·by·only | 153 | functionality·in·the·<a·href="gb_sets.html"><code·class="inline">gb_sets</code></a>·and·<a·href="ordsets.html"><code·class="inline">ordsets</code></a>·modules.·That·is,·by·only |
| 154 | changing·the·module·name·for·each·call,·you·can·try·out·different·set | 154 | changing·the·module·name·for·each·call,·you·can·try·out·different·set |
| 155 | representations.</p><ul><li><a·href="#add_element/2"><code·class="inline">add_element/2</code></a></li><li><a·href="#del_element/2"><code·class="inline">del_element/2</code></a></li><li><a·href="#filter/2"><code·class="inline">filter/2</code></a></li><li><a·href="#filtermap/2"><code·class="inline">filtermap/2</code></a></li><li><a·href="#fold/3"><code·class="inline">fold/3</code></a></li><li><a·href="#from_list/1"><code·class="inline">from_list/1</code></a></li><li><a·href="#intersection/1"><code·class="inline">intersection/1</code></a></li><li><a·href="#intersection/2"><code·class="inline">intersection/2</code></a></li><li><a·href="#is_element/2"><code·class="inline">is_element/2</code></a></li><li><a·href="#is_empty/1"><code·class="inline">is_empty/1</code></a></li><li><a·href="#is_equal/2"><code·class="inline">is_equal/2</code></a></li><li><a·href="#is_set/1"><code·class="inline">is_set/1</code></a></li><li><a·href="#is_subset/2"><code·class="inline">is_subset/2</code></a></li><li><a·href="#map/2"><code·class="inline">map/2</code></a></li><li><a·href="#new/0"><code·class="inline">new/0</code></a></li><li><a·href="#size/1"><code·class="inline">size/1</code></a></li><li><a·href="#subtract/2"><code·class="inline">subtract/2</code></a></li><li><a·href="#to_list/1"><code·class="inline">to_list/1</code></a></li><li><a·href="#union/1"><code·class="inline">union/1</code></a></li><li><a·href="#union/2"><code·class="inline">union/2</code></a></li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>While·the·three·set·implementations·offer·the·same·<em>functionality</em>·with | 155 | representations.</p><ul><li><a·href="#add_element/2"><code·class="inline">add_element/2</code></a></li><li><a·href="#del_element/2"><code·class="inline">del_element/2</code></a></li><li><a·href="#filter/2"><code·class="inline">filter/2</code></a></li><li><a·href="#filtermap/2"><code·class="inline">filtermap/2</code></a></li><li><a·href="#fold/3"><code·class="inline">fold/3</code></a></li><li><a·href="#from_list/1"><code·class="inline">from_list/1</code></a></li><li><a·href="#intersection/1"><code·class="inline">intersection/1</code></a></li><li><a·href="#intersection/2"><code·class="inline">intersection/2</code></a></li><li><a·href="#is_element/2"><code·class="inline">is_element/2</code></a></li><li><a·href="#is_empty/1"><code·class="inline">is_empty/1</code></a></li><li><a·href="#is_equal/2"><code·class="inline">is_equal/2</code></a></li><li><a·href="#is_set/1"><code·class="inline">is_set/1</code></a></li><li><a·href="#is_subset/2"><code·class="inline">is_subset/2</code></a></li><li><a·href="#map/2"><code·class="inline">map/2</code></a></li><li><a·href="#new/0"><code·class="inline">new/0</code></a></li><li><a·href="#size/1"><code·class="inline">size/1</code></a></li><li><a·href="#subtract/2"><code·class="inline">subtract/2</code></a></li><li><a·href="#to_list/1"><code·class="inline">to_list/1</code></a></li><li><a·href="#union/1"><code·class="inline">union/1</code></a></li><li><a·href="#union/2"><code·class="inline">union/2</code></a></li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>While·the·three·set·implementations·offer·the·same·<em>functionality</em>·with |
| 156 | respect·to·the·aforementioned·functions,·their·overall·<em>behavior</em>·may·differ. | 156 | respect·to·the·aforementioned·functions,·their·overall·<em>behavior</em>·may·differ. |
| 157 | As·mentioned,·this·module·considers·elements·as·different·if·and·only·if·they | 157 | As·mentioned,·this·module·considers·elements·as·different·if·and·only·if·they |
| 158 | do·not·match·(<code·class="inline">=:=</code>),·while·both·<a·href="ordsets.html"><code·class="inline">ordsets</code></a>·and·<a·href="gb_sets.html"><code·class="inline">gb_sets</code></a>·consider·elements | 158 | do·not·match·(<code·class="inline">=:=</code>),·while·both·<a·href="ordsets.html"><code·class="inline">ordsets</code></a>·and·<a·href="gb_sets.html"><code·class="inline">gb_sets</code></a>·consider·elements |
| 159 | as·different·if·and·only·if·they·do·not·compare·equal·(<code·class="inline">==</code>).</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">sets</span><span·class="p">:</span><span·class="nf">is_element</span><span·class="p"·data-group-id=" | 159 | as·different·if·and·only·if·they·do·not·compare·equal·(<code·class="inline">==</code>).</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">sets</span><span·class="p">:</span><span·class="nf">is_element</span><span·class="p"·data-group-id="4159664427-1">(</span><span·class="mf">1.0</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">sets</span><span·class="p">:</span><span·class="nf">from_list</span><span·class="p"·data-group-id="4159664427-2">(</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·204,·SHA:·bd544064dcf7fd8657d1e2326f3de7637d87e81c505114867ad6a1745a170835·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 160 | </span><span·class="ss">false</span><span·class="gp·unselectable"> | 160 | </span><span·class="ss">false</span><span·class="gp·unselectable"> |
| 161 | 2>·</span><span·class="nc">ordsets</span><span·class="p">:</span><span·class="nf">is_element</span><span·class="p"·data-group-id=" | 161 | 2>·</span><span·class="nc">ordsets</span><span·class="p">:</span><span·class="nf">is_element</span><span·class="p"·data-group-id="4159664427-4">(</span><span·class="mf">1.0</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">ordsets</span><span·class="p">:</span><span·class="nf">from_list</span><span·class="p"·data-group-id="4159664427-5">(</span><span·class="p"·da[·...·truncated·by·diffoscope;·len:·207,·SHA:·cf461b0ab86e77a4cd0bae25bffdfcebce3212e1cf1049d1eadcd5ec86417d75·...·]-4">)</span><span·class="p">.</span><span·class="w"> |
| 162 | </span><span·class="ss">true</span><span·class="gp·unselectable"> | 162 | </span><span·class="ss">true</span><span·class="gp·unselectable"> |
| 163 | 2>·</span><span·class="nc">gb_sets</span><span·class="p">:</span><span·class="nf">is_element</span><span·class="p"·data-group-id=" | 163 | 2>·</span><span·class="nc">gb_sets</span><span·class="p">:</span><span·class="nf">is_element</span><span·class="p"·data-group-id="4159664427-7">(</span><span·class="mf">1.0</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">gb_sets</span><span·class="p">:</span><span·class="nf">from_list</span><span·class="p"·data-group-id="4159664427-8">(</span><span·class="p"·da[·...·truncated·by·diffoscope;·len:·207,·SHA:·e612f9033abf4c3743a1ab25c4872a15b49b45e3abd477bc9f14a0113687ab53·...·]-7">)</span><span·class="p">.</span><span·class="w"> |
| 164 | </span><span·class="ss">true</span></code></pre></section><h2·id="module-see-also"·class="section-heading"> | 164 | </span><span·class="ss">true</span></code></pre></section><h2·id="module-see-also"·class="section-heading"> |
| 165 | ··<a·href="#module-see-also"·class="hover-link"> | 165 | ··<a·href="#module-see-also"·class="hover-link"> |
| 166 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 166 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 167 | ··</a> | 167 | ··</a> |
| 168 | ··<span·class="text">See·Also</span> | 168 | ··<span·class="text">See·Also</span> |
| 169 | </h2> | 169 | </h2> |
| 170 | <p><a·href="gb_sets.html"><code·class="inline">gb_sets</code></a>,·<a·href="ordsets.html"><code·class="inline">ordsets</code></a></p> | 170 | <p><a·href="gb_sets.html"><code·class="inline">gb_sets</code></a>,·<a·href="ordsets.html"><code·class="inline">ordsets</code></a></p> |
| Offset 162, 15 lines modified | Offset 162, 15 lines modified | ||
| 162 | used·by·the·compiler·are·unavailable·at·runtime.·So,·to·read·the·record·syntax | 162 | used·by·the·compiler·are·unavailable·at·runtime.·So,·to·read·the·record·syntax |
| 163 | and·print·tuples·as·records·when·possible,·record·definitions·must·be·maintained | 163 | and·print·tuples·as·records·when·possible,·record·definitions·must·be·maintained |
| 164 | by·the·shell·itself.</p><p>The·shell·commands·for·reading,·defining,·forgetting,·listing,·and·printing | 164 | by·the·shell·itself.</p><p>The·shell·commands·for·reading,·defining,·forgetting,·listing,·and·printing |
| 165 | records·are·described·below.·Notice·that·each·job·has·its·own·set·of·record | 165 | records·are·described·below.·Notice·that·each·job·has·its·own·set·of·record |
| 166 | definitions.·To·facilitate·matters,·record·definitions·in·modules | 166 | definitions.·To·facilitate·matters,·record·definitions·in·modules |
| 167 | <code·class="inline">shell_default</code>·and·<code·class="inline">user_default</code>·(if·loaded)·are·read·each·time·a·new·job·is | 167 | <code·class="inline">shell_default</code>·and·<code·class="inline">user_default</code>·(if·loaded)·are·read·each·time·a·new·job·is |
| 168 | started.·For·example,·adding·the·following·line·to·<code·class="inline">user_default</code>·makes·the | 168 | started.·For·example,·adding·the·following·line·to·<code·class="inline">user_default</code>·makes·the |
| 169 | definition·of·<code·class="inline">file_info</code>·readily·available·in·the·shell:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="8 | 169 | definition·of·<code·class="inline">file_info</code>·readily·available·in·the·shell:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="8219603492-1">(</span><span·class="s">"kernel/include/file.hrl"</span><span·class="p"·data-group-id="8219603492-1">)</span><span·class="p">.</span></code></pre><p>The·shell·runs·in·two·modes:</p><ul><li><code·class="inline">Normal·(possibly·restricted)</code>·mode,·in·which·commands·can·be·edited·and |
| 170 | expressions·evaluated</li><li>Job·Control·Mode,·<code·class="inline">JCL</code>,·in·which·jobs·can·be·started,·killed,·detached,·and | 170 | expressions·evaluated</li><li>Job·Control·Mode,·<code·class="inline">JCL</code>,·in·which·jobs·can·be·started,·killed,·detached,·and |
| 171 | connected</li></ul><p>Only·the·currently·connected·job·can·'talk'·to·the·shell.</p><h2·id="module-shell-commands"·class="section-heading"> | 171 | connected</li></ul><p>Only·the·currently·connected·job·can·'talk'·to·the·shell.</p><h2·id="module-shell-commands"·class="section-heading"> |
| 172 | ··<a·href="#module-shell-commands"·class="hover-link"> | 172 | ··<a·href="#module-shell-commands"·class="hover-link"> |
| 173 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 173 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 174 | ··</a> | 174 | ··</a> |
| 175 | ··<span·class="text">Shell·Commands</span> | 175 | ··<span·class="text">Shell·Commands</span> |
| 176 | </h2> | 176 | </h2> |
| Offset 230, 114 lines modified | Offset 230, 114 lines modified | ||
| 230 | ··<a·href="#module-example"·class="hover-link"> | 230 | ··<a·href="#module-example"·class="hover-link"> |
| 231 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 231 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 232 | ··</a> | 232 | ··</a> |
| 233 | ··<span·class="text">Example</span> | 233 | ··<span·class="text">Example</span> |
| 234 | </h2> | 234 | </h2> |
| 235 | <p>The·following·example·is·a·long·dialog·with·the·shell.·Commands·starting·with | 235 | <p>The·following·example·is·a·long·dialog·with·the·shell.·Commands·starting·with |
| 236 | <code·class="inline">></code>·are·inputs·to·the·shell.·All·other·lines·are·output·from·the·shell.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">strider</span><span·class="w">·</span><span·class="mi">1</span><span·class="o">></span><span·class="w">·</span><span·class="ss">erl</span><span·class="w"> | 236 | <code·class="inline">></code>·are·inputs·to·the·shell.·All·other·lines·are·output·from·the·shell.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="ss">strider</span><span·class="w">·</span><span·class="mi">1</span><span·class="o">></span><span·class="w">·</span><span·class="ss">erl</span><span·class="w"> |
| 237 | </span><span·class="n">Erlang</span><span·class="w">·</span><span·class="p"·data-group-id="9 | 237 | </span><span·class="n">Erlang</span><span·class="w">·</span><span·class="p"·data-group-id="9939536049-1">(</span><span·class="n">BEAM</span><span·class="p"·data-group-id="9939536049-1">)</span><span·class="w">·</span><span·class="ss">emulator</span><span·class="w">·</span><span·class="ss">version</span><span·class="w">·</span><span·class="mf">5.3[·...·truncated·by·diffoscope;·len:·362,·SHA:·0985acc129bb3b4f00e6730b6861bdf1ff20f1985798edf788382da4f8531aab·...·]9-3">]</span><span·class="w"> |
| 238 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V5</span><span·class="p">.</span><span·class="mi">3</span><span·class="w">··</span><span·class="p"·data-group-id="9 | 238 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V5</span><span·class="p">.</span><span·class="mi">3</span><span·class="w">··</span><span·class="p"·data-group-id="9939536049-4">(</span><span·class="ss">abort</span><span·class="w">·</span><span·class="ss">with</span><span·class="w">·</span><span·class="err">^</span><span·class="n">G</span><span·class="p"·data-group-id="9939536049-4">)</span><span·class="gp·unselectable"> |
| 239 | 1>·</span><span·class="n">Str</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"abcd"</span><span·class="p">.</span><span·class="w"> | 239 | 1>·</span><span·class="n">Str</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"abcd"</span><span·class="p">.</span><span·class="w"> |
| 240 | </span><span·class="s">"abcd"</span></code></pre><p>Command·1·sets·variable·<code·class="inline">Str</code>·to·string·<code·class="inline">"abcd"</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="n">L</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">length</span><span·class="p"·data-group-id="20 | 240 | </span><span·class="s">"abcd"</span></code></pre><p>Command·1·sets·variable·<code·class="inline">Str</code>·to·string·<code·class="inline">"abcd"</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="n">L</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">length</span><span·class="p"·data-group-id="2048988616-1">(</span><span·class="n">Str</span><span·class="p"·data-group-id="2048988616-1">)</span><span·class="p">.</span><span·class="w"> |
| 241 | </span><span·class="mi">4</span></code></pre><p>Command·2·sets·<code·class="inline">L</code>·to·the·length·of·string·<code·class="inline">Str</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="n">Descriptor</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4856751699-1">{</span><span·class="n">L</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">list_to_atom</span><span·class="p"·data-group-id="4856751699-2">(</span><span·class="n">Str</span><span·class="p"·data-group-id="4856751699-2">)</span><span·class="p"·data-group-id="4856751699-1">}</span><span·class="p">.</span><span·class="w"> | ||
| 242 | </span><span·class=" | 241 | </span><span·class="mi">4</span></code></pre><p>Command·2·sets·<code·class="inline">L</code>·to·the·length·of·string·<code·class="inline">Str</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="n">Descriptor</span[·...·truncated·by·diffoscope;·len:·459,·SHA:·480185373638e569c3b64043133fd86057fb59bc239c31d4d0b1574c1701c983·...·] |
| 242 | </span><span·class="p"·data-group-id="8049616641-3">{</span><span·class="mi">4</span><span·class="p">,</span><span·class="ss">abcd</span><span·class="p"·data-group-id="8049616641-3">}</span></code></pre><p>Command·3·builds·the·tuple·<code·class="inline">Descriptor</code>,·evaluating·the·BIF | ||
| 243 | <a·href="../../../../erts-15.2.3/doc/html/erlang.html#list_to_atom/1"><code·class="inline">list_to_atom/1</code>·</a>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">4>·</span><span·class="n">L</span><span·class="p">.</span><span·class="w"> | 243 | <a·href="../../../../erts-15.2.3/doc/html/erlang.html#list_to_atom/1"><code·class="inline">list_to_atom/1</code>·</a>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">4>·</span><span·class="n">L</span><span·class="p">.</span><span·class="w"> |
| 244 | </span><span·class="mi">4</span></code></pre><p>Command·4·prints·the·value·of·variable·<code·class="inline">L</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">5>·</span><span·class="nf">b</span><span·class="p"·data-group-id=" | 244 | </span><span·class="mi">4</span></code></pre><p>Command·4·prints·the·value·of·variable·<code·class="inline">L</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">5>·</span><span·class="nf">b</span><span·class="p"·data-group-id="8051266200-1">(</span><span·class="p"·data-group-id="8051266200-1">)</span><span·class="p">.</span><span·class="w"> |
| 245 | </span><span·class="n">Descriptor</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 245 | </span><span·class="n">Descriptor</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="8051266200-2">{</span><span·class="mi">4</span><span·class="p">,</span><span·class="ss">abcd</span><span·class="p"·data-group-id="8051266200-2">}</span><span·class="w"> |
| 246 | </span><span·class="n">L</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">4</span><span·class="w"> | 246 | </span><span·class="n">L</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">4</span><span·class="w"> |
| 247 | </span><span·class="n">Str</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"abcd"</span><span·class="w"> | 247 | </span><span·class="n">Str</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"abcd"</span><span·class="w"> |
| 248 | </span><span·class="ss">ok</span></code></pre><p>Command·5·evaluates·the·internal·shell·command·<code·class="inline">b()</code>,·which·is·an·abbreviation | 248 | </span><span·class="ss">ok</span></code></pre><p>Command·5·evaluates·the·internal·shell·command·<code·class="inline">b()</code>,·which·is·an·abbreviation |
| 249 | of·"bindings".·This·prints·the·current·shell·variables·and·their·bindings.·<code·class="inline">ok</code> | 249 | of·"bindings".·This·prints·the·current·shell·variables·and·their·bindings.·<code·class="inline">ok</code> |
| 250 | at·the·end·is·the·return·value·of·function·<code·class="inline">b()</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">6>·</span><span·class="nf">f</span><span·class="p"·data-group-id=" | 250 | at·the·end·is·the·return·value·of·function·<code·class="inline">b()</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">6>·</span><span·class="nf">f</span><span·class="p"·data-group-id="6006507292-1">(</span><span·class="n">L</span><span·class="p"·data-group-id="6006507292-1">)</span><span·class="p">.</span><span·class="w"> |
| 251 | </span><span·class="ss">ok</span></code></pre><p>Command·6·evaluates·the·internal·shell·command·<code·class="inline">f(L)</code>·(abbreviation·of | 251 | </span><span·class="ss">ok</span></code></pre><p>Command·6·evaluates·the·internal·shell·command·<code·class="inline">f(L)</code>·(abbreviation·of |
| 252 | "forget").·The·value·of·variable·<code·class="inline">L</code>·is·removed.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">7>·</span><span·class="nf">b</span><span·class="p"·data-group-id=" | 252 | "forget").·The·value·of·variable·<code·class="inline">L</code>·is·removed.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">7>·</span><span·class="nf">b</span><span·class="p"·data-group-id="1450763018-1">(</span><span·class="p"·data-group-id="1450763018-1">)</span><span·class="p">.</span><span·class="w"> |
| 253 | </span><span·class="n">Descriptor</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 253 | </span><span·class="n">Descriptor</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="1450763018-2">{</span><span·class="mi">4</span><span·class="p">,</span><span·class="ss">abcd</span><span·class="p"·data-group-id="1450763018-2">}</span><span·class="w"> |
| 254 | </span><span·class="n">Str</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"abcd"</span><span·class="w"> | 254 | </span><span·class="n">Str</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"abcd"</span><span·class="w"> |
| 255 | </span><span·class="ss">ok</span></code></pre><p>Command·7·prints·the·new·bindings.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">8>·</span><span·class="nf">f</span><span·class="p"·data-group-id=" | 255 | </span><span·class="ss">ok</span></code></pre><p>Command·7·prints·the·new·bindings.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">8>·</span><span·class="nf">f</span><span·class="p"·data-group-id="7736396686-1">(</span><span·class="n">L</span><span·class="p"·data-group-id="7736396686-1">)</span><span·class="p">.</span><span·class="w"> |
| 256 | </span><span·class="ss">ok</span></code></pre><p>Command·8·has·no·effect,·as·<code·class="inline">L</code>·has·no·value.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">9>·</span><span·class="p"·data-group-id=" | 256 | </span><span·class="ss">ok</span></code></pre><p>Command·8·has·no·effect,·as·<code·class="inline">L</code>·has·no·value.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">9>·</span><span·class="p"·data-group-id="8630717244-1">{</span><span·class="n">L</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="p"·data-group-id="8630717244-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Descriptor</span><span·class="p">.</span><span·class="w"> |
| 257 | </span><span·class="p"·data-group-id=" | 257 | </span><span·class="p"·data-group-id="8630717244-2">{</span><span·class="mi">4</span><span·class="p">,</span><span·class="ss">abcd</span><span·class="p"·data-group-id="8630717244-2">}</span></code></pre><p>Command·9·performs·a·pattern·matching·operation·on·<code·class="inline">Descriptor</code>,·binding·a·new |
| 258 | value·to·<code·class="inline">L</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">10>·</span><span·class="n">L</span><span·class="p">.</span><span·class="w"> | 258 | value·to·<code·class="inline">L</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">10>·</span><span·class="n">L</span><span·class="p">.</span><span·class="w"> |
| 259 | </span><span·class="mi">4</span></code></pre><p>Command·10·prints·the·current·value·of·<code·class="inline">L</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">11>·</span><span·class="p"·data-group-id=" | 259 | </span><span·class="mi">4</span></code></pre><p>Command·10·prints·the·current·value·of·<code·class="inline">L</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">11>·</span><span·class="p"·data-group-id="3808662736-1">{</span><span·class="n">P</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Q</span><span·class="p">,</span><span·class="w">·</span><span·class="n">R</span><span·class="p"·data-group-id="3808662736-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Descriptor</span><span·class="p">.</span><span·class="w"> |
| 260 | </span><span·class="gt">**·exception·error:·no·match·of·right·hand·side·value·{4,abcd}</span></code></pre><p>Command·11·tries·to·match·<code·class="inline">{P,·Q,·R}</code>·against·<code·class="inline">Descriptor</code>,·which·is·<code·class="inline">{4,·abc}</code>. | 260 | </span><span·class="gt">**·exception·error:·no·match·of·right·hand·side·value·{4,abcd}</span></code></pre><p>Command·11·tries·to·match·<code·class="inline">{P,·Q,·R}</code>·against·<code·class="inline">Descriptor</code>,·which·is·<code·class="inline">{4,·abc}</code>. |
| 261 | The·match·fails·and·none·of·the·new·variables·become·bound.·The·printout | 261 | The·match·fails·and·none·of·the·new·variables·become·bound.·The·printout |
| 262 | starting·with·"<code·class="inline">**·exception·error:</code>"·is·not·the·value·of·the·expression·(the | 262 | starting·with·"<code·class="inline">**·exception·error:</code>"·is·not·the·value·of·the·expression·(the |
| 263 | expression·had·no·value·because·its·evaluation·failed),·but·a·warning·printed·by | 263 | expression·had·no·value·because·its·evaluation·failed),·but·a·warning·printed·by |
| 264 | the·system·to·inform·the·user·that·an·error·has·occurred.·The·values·of·the | 264 | the·system·to·inform·the·user·that·an·error·has·occurred.·The·values·of·the |
| 265 | other·variables·(<code·class="inline">L</code>,·<code·class="inline">Str</code>,·and·so·on)·are·unchanged.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">12>·</span><span·class="n">P</span><span·class="p">.</span><span·class="w"> | 265 | other·variables·(<code·class="inline">L</code>,·<code·class="inline">Str</code>,·and·so·on)·are·unchanged.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">12>·</span><span·class="n">P</span><span·class="p">.</span><span·class="w"> |
| 266 | </span><span·class="gt">*·1:1:·variable·'P'·is·unbound</span><span·class="gp·unselectable"> | 266 | </span><span·class="gt">*·1:1:·variable·'P'·is·unbound</span><span·class="gp·unselectable"> |
| 267 | 13>·</span><span·class="n">Descriptor</span><span·class="p">.</span><span·class="w"> | 267 | 13>·</span><span·class="n">Descriptor</span><span·class="p">.</span><span·class="w"> |
| 268 | </span><span·class="p"·data-group-id=" | 268 | </span><span·class="p"·data-group-id="1347932726-1">{</span><span·class="mi">4</span><span·class="p">,</span><span·class="ss">abcd</span><span·class="p"·data-group-id="1347932726-1">}</span></code></pre><p>Commands·12·and·13·show·that·<code·class="inline">P</code>·is·unbound·because·the·previous·command·failed, |
| 269 | and·that·<code·class="inline">Descriptor</code>·has·not·changed.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">14</span><span·class="o">></span><span·class="p"·data-group-id=" | 269 | and·that·<code·class="inline">Descriptor</code>·has·not·changed.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">14</span><span·class="o">></span><span·class="p"·data-group-id="2330970288-1">{</span><span·class="n">P</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Q</span><span·class="p"·data-group-id="2330970288-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Descriptor</span><span·class="p">.</span><span·class="w"> |
| 270 | </span><span·class="p"·data-group-id=" | 270 | </span><span·class="p"·data-group-id="2330970288-2">{</span><span·class="mi">4</span><span·class="p">,</span><span·class="ss">abcd</span><span·class="p"·data-group-id="2330970288-2">}</span><span·class="gp·unselectable"> |
| 271 | 15>·</span><span·class="n">P</span><span·class="p">.</span><span·class="w"> | 271 | 15>·</span><span·class="n">P</span><span·class="p">.</span><span·class="w"> |
| 272 | </span><span·class="mi">4</span></code></pre><p>Commands·14·and·15·show·a·correct·match·where·<code·class="inline">P</code>·and·<code·class="inline">Q</code>·are·bound.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">16>·</span><span·class="nf">f</span><span·class="p"·data-group-id=" | 272 | </span><span·class="mi">4</span></code></pre><p>Commands·14·and·15·show·a·correct·match·where·<code·class="inline">P</code>·and·<code·class="inline">Q</code>·are·bound.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">16>·</span><span·class="nf">f</span><span·class="p"·data-group-id="1438882049-1">(</span><span·class="p"·data-group-id="1438882049-1">)</span><span·class="p">.</span><span·class="w"> |
| 273 | </span><span·class="ss">ok</span></code></pre><p>Command·16·clears·all·bindings.</p><p>The·next·few·commands·assume·that·<code·class="inline">test1:demo(X)</code>·is·defined·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">demo</span><span·class="p"·data-group-id=" | 273 | </span><span·class="ss">ok</span></code></pre><p>Command·16·clears·all·bindings.</p><p>The·next·few·commands·assume·that·<code·class="inline">test1:demo(X)</code>·is·defined·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">demo</span><span·class="p"·data-group-id="5582238415-1">(</span><span·class="n">X</span><span·class="p"·data-group-id="5582238415-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 274 | </span><span·class="err"> </span><span·class="err"> </span><span·class="err"> </span><span·class="err"> </span><span·class="nf">put</span><span·class="p"·data-group-id=" | 274 | </span><span·class="err"> </span><span·class="err"> </span><span·class="err"> </span><span·class="err"> </span><span·class="nf">put</span><span·class="p"·data-group-id="5582238415-2">(</span><span·class="ss">aa</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">worked</span><span·class="p"·data-group-id="5582238415-2">)</span><span·class="p">,</span><span·class="w"> |
| 275 | </span><span·class="err"> </span><span·class="err"> </span><span·class="err"> </span><span·class="err"> </span><span·class="n">X</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> | 275 | </span><span·class="err"> </span><span·class="err"> </span><span·class="err"> </span><span·class="err"> </span><span·class="n">X</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> |
| 276 | </span><span·class="err"> </span><span·class="err"> </span><span·class="err"> </span><span·class="err"> </span><span·class="n">X</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="mi">10</span><span·class="p">.</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">17>·</span><span·class="nf">put</span><span·class="p"·data-group-id=" | 276 | </span><span·class="err"> </span><span·class="err"> </span><span·class="err"> </span><span·class="err"> </span><span·class="n">X</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="mi">10</span><span·class="p">.</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">17>·</span><span·class="nf">put</span><span·class="p"·data-group-id="7659804359-1">(</span><span·class="ss">aa</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">hello</span><span·class="p"·data-group-id="7659804359-1">)</span><span·class="p">.</span><span·class="w"> |
| 277 | </span><span·class="ss">undefined</span><span·class="gp·unselectable"> | 277 | </span><span·class="ss">undefined</span><span·class="gp·unselectable"> |
| 278 | 18>·</span><span·class="nf">get</span><span·class="p"·data-group-id=" | 278 | 18>·</span><span·class="nf">get</span><span·class="p"·data-group-id="7659804359-2">(</span><span·class="ss">aa</span><span·class="p"·data-group-id="7659804359-2">)</span><span·class="p">.</span><span·class="w"> |
| 279 | </span><span·class="ss">hello</span></code></pre><p>Commands·17·and·18·set·and·inspect·the·value·of·item·<code·class="inline">aa</code>·in·the·process | 279 | </span><span·class="ss">hello</span></code></pre><p>Commands·17·and·18·set·and·inspect·the·value·of·item·<code·class="inline">aa</code>·in·the·process |
| 280 | dictionary.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">19>·</span><span·class="n">Y</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">test1</span><span·class="p">:</span><span·class="nf">demo</span><span·class="p"·data-group-id=" | 280 | dictionary.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">19>·</span><span·class="n">Y</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">test1</span><span·class="p">:</span><span·class="nf">demo</span><span·class="p"·data-group-id="9114281197-1">(</span><span·class="mi">1</span><span·class="p"·data-group-id="9114281197-1">)</span><span·class="p">.</span><span·class="w"> |
| 281 | </span><span·class="mi">11</span></code></pre><p>Command·19·evaluates·<code·class="inline">test1:demo(1)</code>.·The·evaluation·succeeds·and·the·changes | 281 | </span><span·class="mi">11</span></code></pre><p>Command·19·evaluates·<code·class="inline">test1:demo(1)</code>.·The·evaluation·succeeds·and·the·changes |
| 282 | made·in·the·process·dictionary·become·visible·to·the·shell.·The·new·value·of | 282 | made·in·the·process·dictionary·become·visible·to·the·shell.·The·new·value·of |
| 283 | dictionary·item·<code·class="inline">aa</code>·can·be·seen·in·command·20.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">20>·</span><span·class="nf">get</span><span·class="p"·data-group-id=" | 283 | dictionary·item·<code·class="inline">aa</code>·can·be·seen·in·command·20.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">20>·</span><span·class="nf">get</span><span·class="p"·data-group-id="1010237785-1">(</span><span·class="p"·data-group-id="1010237785-1">)</span><span·class="p">.</span><span·class="w"> |
| 284 | </span><span·class="p"·data-group-id=" | 284 | </span><span·class="p"·data-group-id="1010237785-2">[</span><span·class="p"·data-group-id="1010237785-3">{</span><span·class="ss">aa</span><span·class="p">,</span><span·class="ss">worked</span><span·class="p"·data-group-id="1010237785-3">}</span><span·class="p"·data-group-id="1010237785-2">]</span><span·class="gp·unselectable"> |
| 285 | 21>·</span><span·class="nf">put</span><span·class="p"·data-group-id=" | 285 | 21>·</span><span·class="nf">put</span><span·class="p"·data-group-id="1010237785-4">(</span><span·class="ss">aa</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">hello</span><span·class="p"·data-group-id="1010237785-4">)</span><span·class="p">.</span><span·class="w"> |
| 286 | </span><span·class="ss">worked</span><span·class="gp·unselectable"> | 286 | </span><span·class="ss">worked</span><span·class="gp·unselectable"> |
| 287 | 22>·</span><span·class="n">Z</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">test1</span><span·class="p">:</span><span·class="nf">demo</span><span·class="p"·data-group-id=" | 287 | 22>·</span><span·class="n">Z</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">test1</span><span·class="p">:</span><span·class="nf">demo</span><span·class="p"·data-group-id="1010237785-5">(</span><span·class="mi">2</span><span·class="p"·data-group-id="1010237785-5">)</span><span·class="p">.</span><span·class="w"> |
| 288 | </span><span·class="gt">**·exception·error:·no·match·of·right·hand·side·value·1 | 288 | </span><span·class="gt">**·exception·error:·no·match·of·right·hand·side·value·1 |
| 289 | ·····in·function··test1:demo/1</span></code></pre><p>Commands·21·and·22·change·the·value·of·dictionary·item·<code·class="inline">aa</code>·to·<code·class="inline">hello</code>·and·call | 289 | ·····in·function··test1:demo/1</span></code></pre><p>Commands·21·and·22·change·the·value·of·dictionary·item·<code·class="inline">aa</code>·to·<code·class="inline">hello</code>·and·call |
| 290 | <code·class="inline">test1:demo(2)</code>.·Evaluation·fails·and·the·changes·made·to·the·dictionary·in | 290 | <code·class="inline">test1:demo(2)</code>.·Evaluation·fails·and·the·changes·made·to·the·dictionary·in |
| 291 | <code·class="inline">test1:demo(2)</code>,·before·the·error·occurred,·are·discarded.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">23>·</span><span·class="n">Z</span><span·class="p">.</span><span·class="w"> | 291 | <code·class="inline">test1:demo(2)</code>,·before·the·error·occurred,·are·discarded.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">23>·</span><span·class="n">Z</span><span·class="p">.</span><span·class="w"> |
| 292 | </span><span·class="gt">*·1:1:·variable·'Z'·is·unbound</span><span·class="gp·unselectable"> | 292 | </span><span·class="gt">*·1:1:·variable·'Z'·is·unbound</span><span·class="gp·unselectable"> |
| 293 | 24>·</span><span·class="nf">get</span><span·class="p"·data-group-id="9 | 293 | 24>·</span><span·class="nf">get</span><span·class="p"·data-group-id="9675221732-1">(</span><span·class="ss">aa</span><span·class="p"·data-group-id="9675221732-1">)</span><span·class="p">.</span><span·class="w"> |
| 294 | </span><span·class="ss">hello</span></code></pre><p>Commands·23·and·24·show·that·<code·class="inline">Z</code>·was·not·bound·and·that·dictionary·item·<code·class="inline">aa</code>·has | 294 | </span><span·class="ss">hello</span></code></pre><p>Commands·23·and·24·show·that·<code·class="inline">Z</code>·was·not·bound·and·that·dictionary·item·<code·class="inline">aa</code>·has |
| 295 | retained·its·original·value.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">25>·</span><span·class="nf">erase</span><span·class="p"·data-group-id=" | 295 | retained·its·original·value.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">25>·</span><span·class="nf">erase</span><span·class="p"·data-group-id="6415287723-1">(</span><span·class="p"·data-group-id="6415287723-1">)</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">put</span><span·class="p"·data-group-id="6415287723-2">(</span><span·class="ss">aa</span><span·class="p">,</span><sp[·...·truncated·by·diffoscope;·len:·91,·SHA:·886016f2896e238b3f0f04411a985b2d28080455fbac1922a073aa7bbafd7cb8·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 296 | </span><span·class="ss">undefined</span><span·class="gp·unselectable"> | 296 | </span><span·class="ss">undefined</span><span·class="gp·unselectable"> |
| 297 | 26>·</span><span·class="nf">spawn</span><span·class="p"·data-group-id=" | 297 | 26>·</span><span·class="nf">spawn</span><span·class="p"·data-group-id="6415287723-3">(</span><span·class="ss">test1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">demo</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6415287723-4">[</span><span·class="mi">1</span><sp[·...·truncated·by·diffoscope;·len:·91,·SHA:·103bc60ba0afb8ab9697a3106a8e311aa1f71b279a98d3585dadf161c4f0e866·...·]-3">)</span><span·class="p">.</span><span·class="w"> |
| 298 | </span><span·class="o"><</span><span·class="mf">0.57</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="gp·unselectable"> | 298 | </span><span·class="o"><</span><span·class="mf">0.57</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="gp·unselectable"> |
| 299 | 27>·</span><span·class="nf">get</span><span·class="p"·data-group-id=" | 299 | 27>·</span><span·class="nf">get</span><span·class="p"·data-group-id="6415287723-5">(</span><span·class="ss">aa</span><span·class="p"·data-group-id="6415287723-5">)</span><span·class="p">.</span><span·class="w"> |
| 300 | </span><span·class="ss">hello</span></code></pre><p>Commands·25,·26,·and·27·show·the·effect·of·evaluating·<code·class="inline">test1:demo(1)</code>·in·the | 300 | </span><span·class="ss">hello</span></code></pre><p>Commands·25,·26,·and·27·show·the·effect·of·evaluating·<code·class="inline">test1:demo(1)</code>·in·the |
| 301 | background.·In·this·case,·the·expression·is·evaluated·in·a·newly·spawned | 301 | background.·In·this·case,·the·expression·is·evaluated·in·a·newly·spawned |
| 302 | process.·Any·changes·made·in·the·process·dictionary·are·local·to·the·newly | 302 | process.·Any·changes·made·in·the·process·dictionary·are·local·to·the·newly |
| 303 | spawned·process·and·therefore·not·visible·to·the·shell.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">28>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 303 | spawned·process·and·therefore·not·visible·to·the·shell.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">28>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="9185701393-1">(</span><span·class="s">"hello·hello\n"</span><span·class="p"·data-group-id="9185701393-1">)</span><span·class="p">.</span><span·class="w"> |
| 304 | </span><span·class="ss">hello</span><span·class="w">·</span><span·class="ss">hello</span><span·class="w"> | 304 | </span><span·class="ss">hello</span><span·class="w">·</span><span·class="ss">hello</span><span·class="w"> |
| 305 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 305 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 306 | 29>·</span><span·class="nf">e</span><span·class="p"·data-group-id=" | 306 | 29>·</span><span·class="nf">e</span><span·class="p"·data-group-id="9185701393-2">(</span><span·class="mi">28</span><span·class="p"·data-group-id="9185701393-2">)</span><span·class="p">.</span><span·class="w"> |
| 307 | </span><span·class="ss">hello</span><span·class="w">·</span><span·class="ss">hello</span><span·class="w"> | 307 | </span><span·class="ss">hello</span><span·class="w">·</span><span·class="ss">hello</span><span·class="w"> |
| 308 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 308 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 309 | 30>·</span><span·class="nf">v</span><span·class="p"·data-group-id=" | 309 | 30>·</span><span·class="nf">v</span><span·class="p"·data-group-id="9185701393-3">(</span><span·class="mi">28</span><span·class="p"·data-group-id="9185701393-3">)</span><span·class="p">.</span><span·class="w"> |
| 310 | </span><span·class="ss">ok</span></code></pre><p>Commands·28,·29·and·30·use·the·history·facilities·of·the·shell.·Command·29 | 310 | </span><span·class="ss">ok</span></code></pre><p>Commands·28,·29·and·30·use·the·history·facilities·of·the·shell.·Command·29 |
| 311 | re-evaluates·command·28.·Command·30·uses·the·value·(result)·of·command·28.·In | 311 | re-evaluates·command·28.·Command·30·uses·the·value·(result)·of·command·28.·In |
| 312 | the·cases·of·a·pure·function·(a·function·with·no·side·effects),·the·result·is | 312 | the·cases·of·a·pure·function·(a·function·with·no·side·effects),·the·result·is |
| 313 | the·same.·For·a·function·with·side·effects,·the·result·can·be·different.</p><p>The·next·few·commands·show·some·record·manipulation.·It·is·assumed·that·<code·class="inline">ex.erl</code> | 313 | the·same.·For·a·function·with·side·effects,·the·result·can·be·different.</p><p>The·next·few·commands·show·some·record·manipulation.·It·is·assumed·that·<code·class="inline">ex.erl</code> |
| 314 | defines·a·record·as·follows:</p><p><code·class="inline">-record(rec,·{a,·b·=·val()}).</code></p><p><code·class="inline">val()·-></code><br/> <code·class="inline">3.</code></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">31>·</span><span·class="nf">c</span><span·class="p"·data-group-id=" | 314 | defines·a·record·as·follows:</p><p><code·class="inline">-record(rec,·{a,·b·=·val()}).</code></p><p><code·class="inline">val()·-></code><br/> <code·class="inline">3.</code></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">31>·</span><span·class="nf">c</span><span·class="p"·data-group-id="1106745168-1">(</span><span·class="ss">ex</span><span·class="p"·data-group-id="1106745168-1">)</span><span·class="p">.</span><span·class="w"> |
| 315 | </span><span·class="p"·data-group-id=" | 315 | </span><span·class="p"·data-group-id="1106745168-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="ss">ex</span><span·class="p"·data-group-id="1106745168-2">}</span><span·class="gp·unselectable"> |
| 316 | 32>·</span><span·class="nf">rr</span><span·class="p"·data-group-id=" | 316 | 32>·</span><span·class="nf">rr</span><span·class="p"·data-group-id="1106745168-3">(</span><span·class="ss">ex</span><span·class="p"·data-group-id="1106745168-3">)</span><span·class="p">.</span><span·class="w"> |
| 317 | </span><span·class="p"·data-group-id=" | 317 | </span><span·class="p"·data-group-id="1106745168-4">[</span><span·class="ss">rec</span><span·class="p"·data-group-id="1106745168-4">]</span></code></pre><p>Commands·31·and·32·compile·file·<code·class="inline">ex.erl</code>·and·read·the·record·definitions·in |
| 318 | <code·class="inline">ex.beam</code>.·If·the·compiler·did·not·output·any·record·definitions·on·the·BEAM | 318 | <code·class="inline">ex.beam</code>.·If·the·compiler·did·not·output·any·record·definitions·on·the·BEAM |
| 319 | file,·<code·class="inline">rr(ex)</code>·tries·to·read·record·definitions·from·the·source·file·instead.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">33>·</span><span·class="nf">rl</span><span·class="p"·data-group-id=" | 319 | file,·<code·class="inline">rr(ex)</code>·tries·to·read·record·definitions·from·the·source·file·instead.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">33>·</span><span·class="nf">rl</span><span·class="p"·data-group-id="9641446610-1">(</span><span·class="ss">rec</span><span·class="p"·data-group-id="9641446610-1">)</span><span·class="p">.</span><span·class="w"> |
| 320 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id=" | 320 | </span><span·class="p">-</span><span·class="na">record</span><span·class="p"·data-group-id="9641446610-2">(</span><span·class="ss">rec</span><span·class="p">,</span><span·class="p"·data-group-id="9641446610-3">{</span><span·class="ss">a</span><span·class="p">,</span><span·class="ss">b</span><span·class="w">·</span><span·class="o">=</span><span·cl[·...·truncated·by·diffoscope;·len:·243,·SHA:·bbe61cde81ba49fbaaf2cfd9b61b6aaa56dd40c7385688f88b9fc1653fd626a9·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 321 | </span><span·class="ss">ok</span></code></pre><p>Command·33·prints·the·definition·of·the·record·named·<code·class="inline">rec</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">34>·</span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id=" | 321 | </span><span·class="ss">ok</span></code></pre><p>Command·33·prints·the·definition·of·the·record·named·<code·class="inline">rec</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">34>·</span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id="0774456071-1">{</span><span·class="p"·data-group-id="0774456071-1">}</span><span·class="p">.</span><span·class="w"> |
| 322 | </span><span·class="gt">**·exception·error:·undefined·shell·command·val/0</span></code></pre><p>Command·34·tries·to·create·a·<code·class="inline">rec</code>·record,·but·fails·as·function·<code·class="inline">val/0</code>·is | 322 | </span><span·class="gt">**·exception·error:·undefined·shell·command·val/0</span></code></pre><p>Command·34·tries·to·create·a·<code·class="inline">rec</code>·record,·but·fails·as·function·<code·class="inline">val/0</code>·is |
| 323 | undefined.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">35>·</span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id=" | 323 | undefined.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">35>·</span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id="1272015525-1">{</span><span·class="ss">b</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">3</span><span·class="p"·data-group-id="1272015525-1">}</span><span·class="p">.</span><span·class="w"> |
| 324 | </span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id=" | 324 | </span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id="1272015525-2">{</span><span·class="ss">a</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">undefined</span><span·class="p">,</span><span·class="ss">b</span><span·class="w">·</span><span·class="o">=</span><span·c[·...·truncated·by·diffoscope;·len:·83,·SHA:·2889d05895521829a3b6d85648d7eb4ea5fbcd4ceee7e58a117ff3ff9c1d96b9·...·]-2">}</span></code></pre><p>Command·35·shows·the·workaround:·explicitly·assign·values·to·record·fields·that |
| 325 | cannot·otherwise·be·initialized.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">36>·</span><span·class="nf">rp</span><span·class="p"·data-group-id="79 | 325 | cannot·otherwise·be·initialized.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">36>·</span><span·class="nf">rp</span><span·class="p"·data-group-id="7399625364-1">(</span><span·class="nf">v</span><span·class="p"·data-group-id="7399625364-2">(</span><span·class="o">-</span><span·class="mi">1</span><span·class="p"·data-group-id="7399625364-2">)</span><span·class="p"·data-group-id="7399625364-1">)</span><span·class="p">.</span><span·class="w"> |
| 326 | </span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id="79 | 326 | </span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id="7399625364-3">{</span><span·class="ss">a</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">undefined</span><span·class="p">,</span><span·class="ss">b</span><span·class="w">·</span><span·class="o">=</span><span·cl[·...·truncated·by·diffoscope;·len:·82,·SHA:·32b5237662d7e1d19beb78ea4f605e4c6d1a1c4de3d6c50450587577f73e5bd0·...·]-3">}</span><span·class="w"> |
| 327 | </span><span·class="ss">ok</span></code></pre><p>Command·36·prints·the·newly·created·record·using·record·definitions·maintained | 327 | </span><span·class="ss">ok</span></code></pre><p>Command·36·prints·the·newly·created·record·using·record·definitions·maintained |
| 328 | by·the·shell.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">37>·</span><span·class="nf">rd</span><span·class="p"·data-group-id="3 | 328 | by·the·shell.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">37>·</span><span·class="nf">rd</span><span·class="p"·data-group-id="7396046031-1">(</span><span·class="ss">rec</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7396046031-2">{</span><span·class="ss">f</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·cla[·...·truncated·by·diffoscope;·len:·273,·SHA:·12c7ac861e95939214d3daa3c98b97e326376cf51442bfd29bfb0e16c4beb011·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 329 | </span><span·class="ss">rec</span></code></pre><p>Command·37·defines·a·record·directly·in·the·shell.·The·definition·replaces·the | 329 | </span><span·class="ss">rec</span></code></pre><p>Command·37·defines·a·record·directly·in·the·shell.·The·definition·replaces·the |
| 330 | one·read·from·file·<code·class="inline">ex.beam</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">38>·</span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id=" | 330 | one·read·from·file·<code·class="inline">ex.beam</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">38>·</span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id="9656172417-1">{</span><span·class="p"·data-group-id="9656172417-1">}</span><span·class="p">.</span><span·class="w"> |
| 331 | </span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id=" | 331 | </span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id="9656172417-2">{</span><span·class="ss">f</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="9656172417-3">[</span><span·class="p"·data-group-id="9656172417-3">]</span><span·class="p"·data-group-id="[·...·truncated·by·diffoscope;·len:·10,·SHA:·4ebc7da8be15a5c96814aa7f18940daf22dbc6499d391a925c0d773a3867c04e·...·]-2">}</span><span·class="w"> |
| 332 | </span><span·class="ss">ok</span></code></pre><p>Command·38·creates·a·record·using·the·new·definition,·and·prints·the·result.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">39>·</span><span·class="nf">rd</span><span·class="p"·data-group-id=" | 332 | </span><span·class="ss">ok</span></code></pre><p>Command·38·creates·a·record·using·the·new·definition,·and·prints·the·result.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">39>·</span><span·class="nf">rd</span><span·class="p"·data-group-id="7841717509-1">(</span><span·class="ss">rec</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="7841717509-2">{</span><span·class="ss">c</span><span·class="p"·data-group-id="7841717509-2">}</span><span·class="p"·data-group-i[·...·truncated·by·diffoscope;·len:·13,·SHA:·393ff59c388f58dde468ab5fc29d198726ede3dc97e5015b7e13cd12cfa7387e·...·]-1">)</span><span·class="p">,</span><span·class="w">·</span><span·class="n">A</span><span·class="p">.</span><span·class="w"> |
| 333 | </span><span·class="gt">*·1:15:·variable·'A'·is·unbound</span><span·class="gp·unselectable"> | 333 | </span><span·class="gt">*·1:15:·variable·'A'·is·unbound</span><span·class="gp·unselectable"> |
| 334 | 40>·</span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id=" | 334 | 40>·</span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id="7841717509-3">{</span><span·class="p"·data-group-id="7841717509-3">}</span><span·class="p">.</span><span·class="w"> |
| 335 | </span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id=" | 335 | </span><span·class="o">#</span><span·class="ss">rec</span><span·class="p"·data-group-id="7841717509-4">{</span><span·class="ss">c</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">undefined</span><span·class="p"·data-group-id="7841717509-4">}</span><span·class="w"> |
| 336 | </span><span·class="ss">ok</span></code></pre><p>Command·39·and·40·show·that·record·definitions·are·updated·as·side·effects.·The | 336 | </span><span·class="ss">ok</span></code></pre><p>Command·39·and·40·show·that·record·definitions·are·updated·as·side·effects.·The |
| 337 | evaluation·of·the·command·fails,·but·the·definition·of·<code·class="inline">rec</code>·has·been·carried | 337 | evaluation·of·the·command·fails,·but·the·definition·of·<code·class="inline">rec</code>·has·been·carried |
| 338 | out.</p><p>For·the·next·command,·it·is·assumed·that·<code·class="inline">test1:loop(N)</code>·is·defined·as·follows:</p><p><code·class="inline">loop(N)·-></code><br/> <code·class="inline">io:format("Hello·Number:·~w~n",·[N]),</code><br/> <code·class="inline">loop(N+1).</code></p><pre><code·class="text">41>·test1:loop(0). | 338 | out.</p><p>For·the·next·command,·it·is·assumed·that·<code·class="inline">test1:loop(N)</code>·is·defined·as·follows:</p><p><code·class="inline">loop(N)·-></code><br/> <code·class="inline">io:format("Hello·Number:·~w~n",·[N]),</code><br/> <code·class="inline">loop(N+1).</code></p><pre><code·class="text">41>·test1:loop(0). |
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| 125 | ····<small·class="app-vsn"·translate="no">(stdlib·v6.2.1)</small> | 125 | ····<small·class="app-vsn"·translate="no">(stdlib·v6.2.1)</small> |
| 126 | ··</h1> | 126 | ··</h1> |
| 127 | ····<section·id="moduledoc"> | 127 | ····<section·id="moduledoc"> |
| 128 | <p>Customizing·the·Erlang·environment.</p><p>The·functions·in·this·module·are·called·when·no·module·name·is·specified·in·a | 128 | <p>Customizing·the·Erlang·environment.</p><p>The·functions·in·this·module·are·called·when·no·module·name·is·specified·in·a |
| 129 | shell·command.</p><p>Consider·the·following·shell·dialog:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">reverse</span><span·class="p"·data-group-id=" | 129 | shell·command.</p><p>Consider·the·following·shell·dialog:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">reverse</span><span·class="p"·data-group-id="9644580471-1">(</span><span·class="s">"abc"</span><span·class="p"·data-group-id="9644580471-1">)</span><span·class="p">.</span><span·class="w"> |
| 130 | </span><span·class="s">"cba"</span><span·class="gp·unselectable"> | 130 | </span><span·class="s">"cba"</span><span·class="gp·unselectable"> |
| 131 | 2>·</span><span·class="nf">c</span><span·class="p"·data-group-id=" | 131 | 2>·</span><span·class="nf">c</span><span·class="p"·data-group-id="9644580471-2">(</span><span·class="ss">foo</span><span·class="p"·data-group-id="9644580471-2">)</span><span·class="p">.</span><span·class="w"> |
| 132 | </span><span·class="p"·data-group-id=" | 132 | </span><span·class="p"·data-group-id="9644580471-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">foo</span><span·class="p"·data-group-id="9644580471-3">}</span></code></pre><p>In·command·one,·module·<a·href="lists.html"><code·class="inline">lists</code></a>·is·called.·In·command·two,·no·module·name·is |
| 133 | specified.·The·shell·searches·module·<code·class="inline">user_default</code>·followed·by·module | 133 | specified.·The·shell·searches·module·<code·class="inline">user_default</code>·followed·by·module |
| 134 | <code·class="inline">shell_default</code>·for·function·<code·class="inline">c/1</code>.</p><p><code·class="inline">shell_default</code>·is·intended·for·"system·wide"·customizations·to·the·shell. | 134 | <code·class="inline">shell_default</code>·for·function·<code·class="inline">c/1</code>.</p><p><code·class="inline">shell_default</code>·is·intended·for·"system·wide"·customizations·to·the·shell. |
| 135 | <code·class="inline">user_default</code>·is·intended·for·"local"·or·individual·user·customizations.</p><h2·id="module-hint"·class="section-heading"> | 135 | <code·class="inline">user_default</code>·is·intended·for·"local"·or·individual·user·customizations.</p><h2·id="module-hint"·class="section-heading"> |
| 136 | ··<a·href="#module-hint"·class="hover-link"> | 136 | ··<a·href="#module-hint"·class="hover-link"> |
| 137 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 137 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 138 | ··</a> | 138 | ··</a> |
| 139 | ··<span·class="text">Hint</span> | 139 | ··<span·class="text">Hint</span> |
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| 367 | ······</div> | 367 | ······</div> |
| 368 | <p>Starts·a·number·of·pseudo·servers.·A·pseudo·server·is·a·server·with·a·registered | 368 | <p>Starts·a·number·of·pseudo·servers.·A·pseudo·server·is·a·server·with·a·registered |
| 369 | name·that·does·nothing·but·pass·on·all·message·to·the·real·server·that·executes | 369 | name·that·does·nothing·but·pass·on·all·message·to·the·real·server·that·executes |
| 370 | at·a·master·node.·A·pseudo·server·is·an·intermediary·that·only·has·the·same | 370 | at·a·master·node.·A·pseudo·server·is·an·intermediary·that·only·has·the·same |
| 371 | registered·name·as·the·real·server.</p><p>For·example,·if·you·have·started·a·slave·node·<code·class="inline">N</code>·and·want·to·execute·<code·class="inline">pxw</code> | 371 | registered·name·as·the·real·server.</p><p>For·example,·if·you·have·started·a·slave·node·<code·class="inline">N</code>·and·want·to·execute·<code·class="inline">pxw</code> |
| 372 | graphics·code·on·this·node,·you·can·start·server·<code·class="inline">pxw_server</code>·as·a·pseudo·server | 372 | graphics·code·on·this·node,·you·can·start·server·<code·class="inline">pxw_server</code>·as·a·pseudo·server |
| 373 | at·the·slave·node.·This·is·illustrated·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">rpc</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id=" | 373 | at·the·slave·node.·This·is·illustrated·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">rpc</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id="6929017024-1">(</span><span·class="n">N</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">slave</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">pseudo</span><span·class="p">,</span><span·class="w">·</span><span·c[·...·truncated·by·diffoscope;·len:·462,·SHA:·83ad5e9bb89b63f22b403182d847068741a9084b736d5288c1a6030f7b554c90·...·]-1">)</span><span·class="p">.</span></code></pre> |
| 374 | ··</section> | 374 | ··</section> |
| 375 | </section> | 375 | </section> |
| 376 | <section·class="detail"·id="relay/1"> | 376 | <section·class="detail"·id="relay/1"> |
| 377 | ··<div·class="detail-header"> | 377 | ··<div·class="detail-header"> |
| 378 | ····<a·href="#relay/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 378 | ····<a·href="#relay/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 379 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 379 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 513 | as·fully·qualified·names;·short·names·can·also·be·used.·This·is·the·same | 513 | as·fully·qualified·names;·short·names·can·also·be·used.·This·is·the·same |
| 514 | condition·that·applies·to·names·of·distributed·Erlang·nodes.</p><p>The·name·of·the·started·node·becomes·<code·class="inline">Name@Host</code>.</p><p>The·slave·node·resets·its·<a·href="io.html#t:user/0"><code·class="inline">io:user/0</code></a>·process·so·that·all·terminal·I/O·that·is | 514 | condition·that·applies·to·names·of·distributed·Erlang·nodes.</p><p>The·name·of·the·started·node·becomes·<code·class="inline">Name@Host</code>.</p><p>The·slave·node·resets·its·<a·href="io.html#t:user/0"><code·class="inline">io:user/0</code></a>·process·so·that·all·terminal·I/O·that·is |
| 515 | produced·at·the·slave·is·automatically·relayed·to·the·master.·Also,·the·file | 515 | produced·at·the·slave·is·automatically·relayed·to·the·master.·Also,·the·file |
| 516 | server·is·relayed·to·the·master.</p><p>Argument·<code·class="inline">Args</code>·is·used·to·set·<code·class="inline">erl</code>·command-line·arguments.·It·is | 516 | server·is·relayed·to·the·master.</p><p>Argument·<code·class="inline">Args</code>·is·used·to·set·<code·class="inline">erl</code>·command-line·arguments.·It·is |
| 517 | passed·to·the·new·node·and·can·be·used·for·a·variety·of·purposes;·see | 517 | passed·to·the·new·node·and·can·be·used·for·a·variety·of·purposes;·see |
| 518 | <a·href="../../../../erts-15.2.3/doc/html/erl_cmd.html"><code·class="inline">erl(1)</code></a>.</p><p>As·an·example,·suppose·that·you·want·to·start·a·slave·node·at·host·<code·class="inline">H</code>·with·node | 518 | <a·href="../../../../erts-15.2.3/doc/html/erl_cmd.html"><code·class="inline">erl(1)</code></a>.</p><p>As·an·example,·suppose·that·you·want·to·start·a·slave·node·at·host·<code·class="inline">H</code>·with·node |
| 519 | name·<code·class="inline">Name@H</code>·and·want·the·slave·node·to·have·the·following·properties:</p><ul><li>Directory·<code·class="inline">Dir</code>·is·to·be·added·to·the·code·path.</li><li>The·Mnesia·directory·is·to·be·set·to·<code·class="inline">M</code>.</li><li>The·Unix·<code·class="inline">DISPLAY</code>·environment·variable·is·to·be·set·to·the·display·of·the | 519 | name·<code·class="inline">Name@H</code>·and·want·the·slave·node·to·have·the·following·properties:</p><ul><li>Directory·<code·class="inline">Dir</code>·is·to·be·added·to·the·code·path.</li><li>The·Mnesia·directory·is·to·be·set·to·<code·class="inline">M</code>.</li><li>The·Unix·<code·class="inline">DISPLAY</code>·environment·variable·is·to·be·set·to·the·display·of·the |
| 520 | master·node.</li></ul><p>The·following·code·is·executed·to·achieve·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">E</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"·-env·DISPLAY·"</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="nc">net_adm</span><span·class="p">:</span><span·class="nf">localhost</span><span·class="p"·data-group-id=" | 520 | master·node.</li></ul><p>The·following·code·is·executed·to·achieve·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">E</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"·-env·DISPLAY·"</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="nc">net_adm</span><span·class="p">:</span><span·class="nf">localhost</span><span·class="p"·data-group-id="3810260626-1">(</span><span·class="p"·data-group-id="3810260626-1">)</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="s">":0·"</span><span·class="p">,</span><span·class="w"> |
| 521 | </span><span·class="n">Arg</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"-mnesia_dir·"</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="n">M</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="s">"·-pa·"</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="n">Dir</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="n">E</span><span·class="p">,</span><span·class="w"> | 521 | </span><span·class="n">Arg</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"-mnesia_dir·"</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="n">M</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="s">"·-pa·"</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="n">Dir</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="n">E</span><span·class="p">,</span><span·class="w"> |
| 522 | </span><span·class="nc">slave</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 522 | </span><span·class="nc">slave</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="3810260626-2">(</span><span·class="n">H</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Arg</span><span·class="p"·data-group-id="3810260626-2">)</span><span·class="p">.</span></code></pre><p>The·function·returns·<code·class="inline">{ok,·Node}</code>,·where·<code·class="inline">Node</code>·is·the·name·of·the·new·node, |
| 523 | otherwise·<code·class="inline">{error,·Reason}</code>,·where·<code·class="inline">Reason</code>·can·be·one·of:</p><ul><li><p><strong><code·class="inline">timeout</code></strong>·-·The·master·node·failed·to·get·in·contact·with·the·slave·node. | 523 | otherwise·<code·class="inline">{error,·Reason}</code>,·where·<code·class="inline">Reason</code>·can·be·one·of:</p><ul><li><p><strong><code·class="inline">timeout</code></strong>·-·The·master·node·failed·to·get·in·contact·with·the·slave·node. |
| 524 | This·can·occur·in·a·number·of·circumstances:</p><ul><li>Erlang/OTP·is·not·installed·on·the·remote·host.</li><li>The·file·system·on·the·other·host·has·a·different·structure·to·the·the | 524 | This·can·occur·in·a·number·of·circumstances:</p><ul><li>Erlang/OTP·is·not·installed·on·the·remote·host.</li><li>The·file·system·on·the·other·host·has·a·different·structure·to·the·the |
| 525 | master.</li><li>The·Erlang·nodes·have·different·cookies.</li></ul></li><li><p><strong><code·class="inline">no_rsh</code></strong>·-·No·remote·shell·program·was·found·on·the·computer.·Note·that | 525 | master.</li><li>The·Erlang·nodes·have·different·cookies.</li></ul></li><li><p><strong><code·class="inline">no_rsh</code></strong>·-·No·remote·shell·program·was·found·on·the·computer.·Note·that |
| 526 | <code·class="inline">ssh</code>·is·used·by·default,·but·this·can·be·overridden·with·the·<code·class="inline">-rsh</code>·flag.</p></li><li><p><strong><code·class="inline">{already_running,·Node}</code></strong>·-·A·node·with·name·<code·class="inline">Name@Host</code>·already·exists.</p></li></ul> | 526 | <code·class="inline">ssh</code>·is·used·by·default,·but·this·can·be·overridden·with·the·<code·class="inline">-rsh</code>·flag.</p></li><li><p><strong><code·class="inline">{already_running,·Node}</code></strong>·-·A·node·with·name·<code·class="inline">Name@Host</code>·already·exists.</p></li></ul> |
| 527 | ··</section> | 527 | ··</section> |
| 528 | </section> | 528 | </section> |
| 529 | <section·class="detail"·id="start_link/1"> | 529 | <section·class="detail"·id="start_link/1"> |
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| 258 | However,·this·optimization·can·only·be·used·when·the·elements·of·the·unordered | 258 | However,·this·optimization·can·only·be·used·when·the·elements·of·the·unordered |
| 259 | set·are·atomic·or·ordered·sets.·It·must·also·be·the·case·that·the·type·of·the | 259 | set·are·atomic·or·ordered·sets.·It·must·also·be·the·case·that·the·type·of·the |
| 260 | elements·matches·some·clause·of·Fun·(the·type·of·the·created·set·is·the·result | 260 | elements·matches·some·clause·of·Fun·(the·type·of·the·created·set·is·the·result |
| 261 | of·applying·Fun·to·the·type·of·the·given·set),·and·that·Fun·does·nothing·but | 261 | of·applying·Fun·to·the·type·of·the·given·set),·and·that·Fun·does·nothing·but |
| 262 | selecting,·duplicating,·or·rearranging·parts·of·the·elements.</li><li>Specifying·a·SetFun·as·an·integer·I·is·equivalent·to·specifying | 262 | selecting,·duplicating,·or·rearranging·parts·of·the·elements.</li><li>Specifying·a·SetFun·as·an·integer·I·is·equivalent·to·specifying |
| 263 | <code·class="inline">{external,·fun(X) ->·element(I, X) end}</code>,·but·is·to·be·preferred,·as·it·makes | 263 | <code·class="inline">{external,·fun(X) ->·element(I, X) end}</code>,·but·is·to·be·preferred,·as·it·makes |
| 264 | it·possible·to·handle·this·case·even·more·efficiently.</li></ul><p>Examples·of·SetFuns:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">fun</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="ss">union</span><span·class="p">/</span><span·class="mi">1</span><span·class="w"> | 264 | it·possible·to·handle·this·case·even·more·efficiently.</li></ul><p>Examples·of·SetFuns:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">fun</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="ss">union</span><span·class="p">/</span><span·class="mi">1</span><span·class="w"> |
| 265 | </span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 265 | </span><span·class="nf">fun</span><span·class="p"·data-group-id="6779442262-1">(</span><span·class="n">S</span><span·class="p"·data-group-id="6779442262-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">partition</s[·...·truncated·by·diffoscope;·len:·195,·SHA:·25e552740d893a8908b431ee88828a24ee90e0630a0f21f03f24e2b7febc1e21·...·]-2">)</span><span·class="w">·</span><span·class="k">end</span><span·class="w"> |
| 266 | </span><span·class="p"·data-group-id=" | 266 | </span><span·class="p"·data-group-id="6779442262-3">{</span><span·class="ss">external</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="6779442262-4">(</span><span·class="n">A</span><span·class="p"·data-group-id="6779442262-4">)</sp[·...·truncated·by·diffoscope;·len:·194,·SHA:·620c2516ba52b8c77703e505ec0f1093a3269a4af1c26ac77e4bee72886d3382·...·]-3">}</span><span·class="w"> |
| 267 | </span><span·class="p"·data-group-id=" | 267 | </span><span·class="p"·data-group-id="6779442262-5">{</span><span·class="ss">external</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="6779442262-6">(</span><span·class="p"·data-group-id="6779442262-7">{</span><span·class="n">A</sp[·...·truncated·by·diffoscope;·len:·550,·SHA:·8bd5c2e63e60977728521c85971a64254d3ae1315eb0e14bf50379ff52d29244·...·]-5">}</span><span·class="w"> |
| 268 | </span><span·class="p"·data-group-id=" | 268 | </span><span·class="p"·data-group-id="6779442262-9">{</span><span·class="ss">external</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="6779442262-10">(</span><span·class="p"·data-group-id="6779442262-11">{</span><span·class="p">_</[·...·truncated·by·diffoscope;·len:·508,·SHA:·97aca68c614fc85eca2bf2955ea7c9d0374f289286fe2a66bfd40ddb156dea49·...·]-9">}</span><span·class="w"> |
| 269 | </span><span·class="p"·data-group-id=" | 269 | </span><span·class="p"·data-group-id="6779442262-13">{</span><span·class="ss">external</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="6779442262-14">(</span><span·class="p"·data-group-id="6779442262-15">{</span><span·class="p">_<[·...·truncated·by·diffoscope;·len:·1025,·SHA:·7121527dc65775dd7a360fb763689032652062b13d5153a95c241024cb8f08b7·...·]-13">}</span><span·class="w"> |
| 270 | </span><span·class="mi">2</span></code></pre><p>The·order·in·which·a·SetFun·is·applied·to·the·elements·of·an·unordered·set·is | 270 | </span><span·class="mi">2</span></code></pre><p>The·order·in·which·a·SetFun·is·applied·to·the·elements·of·an·unordered·set·is |
| 271 | not·specified,·and·can·change·in·future·versions·of·this·module.</p><p>The·execution·time·of·the·functions·of·this·module·is·dominated·by·the·time·it | 271 | not·specified,·and·can·change·in·future·versions·of·this·module.</p><p>The·execution·time·of·the·functions·of·this·module·is·dominated·by·the·time·it |
| 272 | takes·to·sort·lists.·When·no·sorting·is·needed,·the·execution·time·is·in·the | 272 | takes·to·sort·lists.·When·no·sorting·is·needed,·the·execution·time·is·in·the |
| 273 | worst·case·proportional·to·the·sum·of·the·sizes·of·the·input·arguments·and·the | 273 | worst·case·proportional·to·the·sum·of·the·sizes·of·the·input·arguments·and·the |
| 274 | returned·value.·A·few·functions·execute·in·constant·time:·<a·href="#from_external/2"><code·class="inline">from_external/2</code></a>, | 274 | returned·value.·A·few·functions·execute·in·constant·time:·<a·href="#from_external/2"><code·class="inline">from_external/2</code></a>, |
| 275 | <a·href="#is_empty_set/1"><code·class="inline">is_empty_set/1</code></a>,·<a·href="#is_set/1"><code·class="inline">is_set/1</code></a>,·<a·href="#is_sofs_set/1"><code·class="inline">is_sofs_set/1</code></a>,·<a·href="#to_external/1"><code·class="inline">to_external/1</code></a>·<a·href="#type/1"><code·class="inline">type/1</code></a>.</p><p>The·functions·of·this·module·exit·the·process·with·a·<code·class="inline">badarg</code>,·<code·class="inline">bad_function</code>, | 275 | <a·href="#is_empty_set/1"><code·class="inline">is_empty_set/1</code></a>,·<a·href="#is_set/1"><code·class="inline">is_set/1</code></a>,·<a·href="#is_sofs_set/1"><code·class="inline">is_sofs_set/1</code></a>,·<a·href="#to_external/1"><code·class="inline">to_external/1</code></a>·<a·href="#type/1"><code·class="inline">type/1</code></a>.</p><p>The·functions·of·this·module·exit·the·process·with·a·<code·class="inline">badarg</code>,·<code·class="inline">bad_function</code>, |
| 276 | or·<code·class="inline">type_mismatch</code>·message·when·given·badly·formed·arguments·or·sets·the·types | 276 | or·<code·class="inline">type_mismatch</code>·message·when·given·badly·formed·arguments·or·sets·the·types |
| Offset 1796, 18 lines modified | Offset 1796, 18 lines modified | ||
| 1796 | ······</div> | 1796 | ······</div> |
| 1797 | <p>Returns·the·binary·relation·containing·the·elements·(E, Set)·such·that·Set | 1797 | <p>Returns·the·binary·relation·containing·the·elements·(E, Set)·such·that·Set |
| 1798 | belongs·to·<code·class="inline">SetOfSets</code>·and·E·belongs·to·Set.</p><p>If·<code·class="inline">SetOfSets</code>·is·a·<a·href="sofs.html#partition">partition</a>·of·a·set·X·and·R·is·the | 1798 | belongs·to·<code·class="inline">SetOfSets</code>·and·E·belongs·to·Set.</p><p>If·<code·class="inline">SetOfSets</code>·is·a·<a·href="sofs.html#partition">partition</a>·of·a·set·X·and·R·is·the |
| 1799 | equivalence·relation·in·X·induced·by·<code·class="inline">SetOfSets</code>,·then·the·returned·relation·is·the | 1799 | equivalence·relation·in·X·induced·by·<code·class="inline">SetOfSets</code>,·then·the·returned·relation·is·the |
| 1800 | <a·href="sofs.html#canonical_map">canonical·map</a>·from·X·onto·the·equivalence·classes·with | 1800 | <a·href="sofs.html#canonical_map">canonical·map</a>·from·X·onto·the·equivalence·classes·with |
| 1801 | respect·to·R.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">Ss</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">from_term</span><span·class="p"·data-group-id=" | 1801 | respect·to·R.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">Ss</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">from_term</span><span·class="p"·data-group-id="8603315306-1">(</span><span·class="p"·data-group-id="8603315306-2">[</span><span·class="p"·data-group-id="8603315306-3">[</span><span·class="ss">a</span><span·class="p">,</span><span·class="ss">b</span><span·class="p"·data-group-id="8603315306-3">]</span><[·...·truncated·by·diffoscope;·len:·297,·SHA:·9389aeb2bddc86cfc2391774be1ede2224125e2603431f079b7e16f4b1f7265b·...·]-1">)</span><span·class="p">,</span><span·class="w"> |
| 1802 | </span><span·class="n">CR</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">canonical_relation</span><span·class="p"·data-group-id=" | 1802 | </span><span·class="n">CR</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">canonical_relation</span><span·class="p"·data-group-id="8603315306-5">(</span><span·class="n">Ss</span><span·class="p"·data-group-id="8603315306-5">)</span><span·class="p">,</span><span·class="w"> |
| 1803 | </span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">to_external</span><span·class="p"·data-group-id=" | 1803 | </span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">to_external</span><span·class="p"·data-group-id="8603315306-6">(</span><span·class="n">CR</span><span·class="p"·data-group-id="8603315306-6">)</span><span·class="p">.</span><span·class="w"> |
| 1804 | </span><span·class="p"·data-group-id=" | 1804 | </span><span·class="p"·data-group-id="8603315306-7">[</span><span·class="p"·data-group-id="8603315306-8">{</span><span·class="ss">a</span><span·class="p">,</span><span·class="p"·data-group-id="8603315306-9">[</span><span·class="ss">a</span><span·class="p">,</span><span·class="ss">b</span><span[·...·truncated·by·diffoscope;·len:·1231,·SHA:·2981f57bf3ccf8b180b7a86b0a8d5e9a24b3f084a0027b1b1b50afb4ac297f7b·...·]-7">]</span></code></pre> |
| 1805 | ··</section> | 1805 | ··</section> |
| 1806 | </section> | 1806 | </section> |
| 1807 | <section·class="detail"·id="composite/2"> | 1807 | <section·class="detail"·id="composite/2"> |
| 1808 | ··<div·class="detail-header"> | 1808 | ··<div·class="detail-header"> |
| 1809 | ····<a·href="#composite/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1809 | ····<a·href="#composite/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1810 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1810 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 1827, 19 lines modified | Offset 1827, 19 lines modified | ||
| 1827 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·composite(Function1,·Function2)·->·Function3 | 1827 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·composite(Function1,·Function2)·->·Function3 |
| 1828 | ···················when·Function1·::·<a·href="#t:a_function/0">a_function</a>(),·Function2·::·<a·href="#t:a_function/0">a_function</a>(),·Function3·::·<a·href="#t:a_function/0">a_function</a>().</pre> | 1828 | ···················when·Function1·::·<a·href="#t:a_function/0">a_function</a>(),·Function2·::·<a·href="#t:a_function/0">a_function</a>(),·Function3·::·<a·href="#t:a_function/0">a_function</a>().</pre> |
| 1829 | ······</div> | 1829 | ······</div> |
| 1830 | <p>Returns·the·<a·href="sofs.html#composite">composite</a>·of·the·functions·<code·class="inline">Function1</code>·and | 1830 | <p>Returns·the·<a·href="sofs.html#composite">composite</a>·of·the·functions·<code·class="inline">Function1</code>·and |
| 1831 | <code·class="inline">Function2</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">F1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">a_function</span><span·class="p"·data-group-id=" | 1831 | <code·class="inline">Function2</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">F1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">a_function</span><span·class="p"·data-group-id="8591393276-1">(</span><span·class="p"·data-group-id="8591393276-2">[</span><span·class="p"·data-group-id="8591393276-3">{</span><span·class="ss">a</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="8591393276-3">}</span><[·...·truncated·by·diffoscope;·len:·501,·SHA:·8c0f8da2c006fff07030173f324e75ee5d7a98b438142bc2883034931567ecbd·...·]-1">)</span><span·class="p">,</span><span·class="w"> |
| 1832 | </span><span·class="n">F2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">a_function</span><span·class="p"·data-group-id=" | 1832 | </span><span·class="n">F2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">a_function</span><span·class="p"·data-group-id="8591393276-6">(</span><span·class="p"·data-group-id="8591393276-7">[</span><span·class="p"·data-group-id="8591393276-8">{</span><span·class="mi">1</span><span·class="p">,</span><span·class="ss">x</span><span·class="p"·data-group-id="8591393276-8">}</span><[·...·truncated·by·diffoscope;·len:·503,·SHA:·1178688e27a30086c525b2d667912a6d6475586a5e5ef4d1f859d0ea702a513b·...·]-6">)</span><span·class="p">,</span><span·class="w"> |
| 1833 | </span><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">composite</span><span·class="p"·data-group-id=" | 1833 | </span><span·class="n">F</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">composite</span><span·class="p"·data-group-id="8591393276-11">(</span><span·class="n">F1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">F2</span><span·class="p"·data-group-id="8591393276-11">)</span><span·class="p">,</span><span·class="w"> |
| 1834 | </span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">to_external</span><span·class="p"·data-group-id=" | 1834 | </span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">to_external</span><span·class="p"·data-group-id="8591393276-12">(</span><span·class="n">F</span><span·class="p"·data-group-id="8591393276-12">)</span><span·class="p">.</span><span·class="w"> |
| 1835 | </span><span·class="p"·data-group-id=" | 1835 | </span><span·class="p"·data-group-id="8591393276-13">[</span><span·class="p"·data-group-id="8591393276-14">{</span><span·class="ss">a</span><span·class="p">,</span><span·class="ss">x</span><span·class="p"·data-group-id="8591393276-14">}</span><span·class="p">,</span><span·class="p"·data-group-[·...·truncated·by·diffoscope;·len:·402,·SHA:·2a1fd40fb6999059682915949eecaba6f17769bb984779e5abd2730526c33e55·...·]-13">]</span></code></pre> |
| 1836 | ··</section> | 1836 | ··</section> |
| 1837 | </section> | 1837 | </section> |
| 1838 | <section·class="detail"·id="constant_function/2"> | 1838 | <section·class="detail"·id="constant_function/2"> |
| 1839 | ··<div·class="detail-header"> | 1839 | ··<div·class="detail-header"> |
| 1840 | ····<a·href="#constant_function/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1840 | ····<a·href="#constant_function/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1841 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1841 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 1859, 19 lines modified | Offset 1859, 19 lines modified | ||
| 1859 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·constant_function(Set,·AnySet)·->·Function | 1859 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·constant_function(Set,·AnySet)·->·Function |
| 1860 | ···························when·AnySet·::·<a·href="#t:anyset/0">anyset</a>(),·Function·::·<a·href="#t:a_function/0">a_function</a>(),·Set·::·<a·href="#t:a_set/0">a_set</a>().</pre> | 1860 | ···························when·AnySet·::·<a·href="#t:anyset/0">anyset</a>(),·Function·::·<a·href="#t:a_function/0">a_function</a>(),·Set·::·<a·href="#t:a_set/0">a_set</a>().</pre> |
| 1861 | ······</div> | 1861 | ······</div> |
| 1862 | <p>Creates·the·<a·href="sofs.html#function">function</a>·that·maps·each·element·of·set·<code·class="inline">Set</code> | 1862 | <p>Creates·the·<a·href="sofs.html#function">function</a>·that·maps·each·element·of·set·<code·class="inline">Set</code> |
| 1863 | onto·<code·class="inline">AnySet</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">S</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">set</span><span·class="p"·data-group-id=" | 1863 | onto·<code·class="inline">AnySet</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">S</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">set</span><span·class="p"·data-group-id="8445907672-1">(</span><span·class="p"·data-group-id="8445907672-2">[</span><span·class="ss">a</span><span·class="p">,</span><span·class="ss">b</span><span·class="p"·data-group-id="8445907672-2">]</span><span·class="p"·data-group-id="8445907672-1">)</span><span·class="p">,</span><span·class="w"> |
| 1864 | </span><span·class="n">E</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">from_term</span><span·class="p"·data-group-id=" | 1864 | </span><span·class="n">E</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">from_term</span><span·class="p"·data-group-id="8445907672-3">(</span><span·class="mi">1</span><span·class="p"·data-group-id="8445907672-3">)</span><span·class="p">,</span><span·class="w"> |
| 1865 | </span><span·class="n">R</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">constant_function</span><span·class="p"·data-group-id=" | 1865 | </span><span·class="n">R</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">constant_function</span><span·class="p"·data-group-id="8445907672-4">(</span><span·class="n">S</span><span·class="p">,</span><span·class="w">·</span><span·class="n">E</span><span·class="p"·data-group-id="8445907672-4">)</span><span·class="p">,</span><span·class="w"> |
| 1866 | </span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">to_external</span><span·class="p"·data-group-id=" | 1866 | </span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">to_external</span><span·class="p"·data-group-id="8445907672-5">(</span><span·class="n">R</span><span·class="p"·data-group-id="8445907672-5">)</span><span·class="p">.</span><span·class="w"> |
| 1867 | </span><span·class="p"·data-group-id=" | 1867 | </span><span·class="p"·data-group-id="8445907672-6">[</span><span·class="p"·data-group-id="8445907672-7">{</span><span·class="ss">a</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="8445907672-7">}</span><span·class="p">,</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·191,·SHA:·4e5658176250c844699a83fbc38c960e58b9bcec46f202428af83286b669a7aa·...·]-6">]</span></code></pre> |
| 1868 | ··</section> | 1868 | ··</section> |
| 1869 | </section> | 1869 | </section> |
| 1870 | <section·class="detail"·id="converse/1"> | 1870 | <section·class="detail"·id="converse/1"> |
| 1871 | ··<div·class="detail-header"> | 1871 | ··<div·class="detail-header"> |
| 1872 | ····<a·href="#converse/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1872 | ····<a·href="#converse/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1873 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1873 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 1889, 18 lines modified | Offset 1889, 18 lines modified | ||
| 1889 | ······<div·class="specs"> | 1889 | ······<div·class="specs"> |
| 1890 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·converse(BinRel1)·->·BinRel2·when·BinRel1·::·<a·href="#t:binary_relation/0">binary_relation</a>(),·BinRel2·::·<a·href="#t:binary_relation/0">binary_relation</a>().</pre> | 1890 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·converse(BinRel1)·->·BinRel2·when·BinRel1·::·<a·href="#t:binary_relation/0">binary_relation</a>(),·BinRel2·::·<a·href="#t:binary_relation/0">binary_relation</a>().</pre> |
| 1891 | ······</div> | 1891 | ······</div> |
| 1892 | <p>Returns·the·<a·href="sofs.html#converse">converse</a>·of·the·binary·relation·<code·class="inline">BinRel1</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">R1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">relation</span><span·class="p"·data-group-id=" | 1892 | <p>Returns·the·<a·href="sofs.html#converse">converse</a>·of·the·binary·relation·<code·class="inline">BinRel1</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">R1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">relation</span><span·class="p"·data-group-id="4315455929-1">(</span><span·class="p"·data-group-id="4315455929-2">[</span><span·class="p"·data-group-id="4315455929-3">{</span><span·class="mi">1</span><span·class="p">,</span><span·class="ss">a</span><span·class="p"·data-group-id="4315455929-3">}</span><[·...·truncated·by·diffoscope;·len:·500,·SHA:·682cedcae248273b2d7a112d6286513a0cc09cda3f1b0e569a15844a353512b6·...·]9-1">)</span><span·class="p">,</span><span·class="w"> |
| 1893 | </span><span·class="n">R2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">converse</span><span·class="p"·data-group-id=" | 1893 | </span><span·class="n">R2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">converse</span><span·class="p"·data-group-id="4315455929-6">(</span><span·class="n">R1</span><span·class="p"·data-group-id="4315455929-6">)</span><span·class="p">,</span><span·class="w"> |
| 1894 | </span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">to_external</span><span·class="p"·data-group-id=" | 1894 | </span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">to_external</span><span·class="p"·data-group-id="4315455929-7">(</span><span·class="n">R2</span><span·class="p"·data-group-id="4315455929-7">)</span><span·class="p">.</span><span·class="w"> |
| 1895 | </span><span·class="p"·data-group-id=" | 1895 | </span><span·class="p"·data-group-id="4315455929-8">[</span><span·class="p"·data-group-id="4315455929-9">{</span><span·class="ss">a</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="4315455929-9">}</span><span·class="p">,</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·398,·SHA:·a940ea3cc9604f6779c09b124430b4aa4393c051363303d4edd53d6b2fc06f3c·...·]9-8">]</span></code></pre> |
| 1896 | ··</section> | 1896 | ··</section> |
| 1897 | </section> | 1897 | </section> |
| 1898 | <section·class="detail"·id="difference/2"> | 1898 | <section·class="detail"·id="difference/2"> |
| 1899 | ··<div·class="detail-header"> | 1899 | ··<div·class="detail-header"> |
| 1900 | ····<a·href="#difference/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1900 | ····<a·href="#difference/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1901 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1901 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 2002, 18 lines modified | Offset 2002, 18 lines modified | ||
| 2002 | ······<div·class="specs"> | 2002 | ······<div·class="specs"> |
| 2003 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·domain(BinRel)·->·Set·when·BinRel·::·<a·href="#t:binary_relation/0">binary_relation</a>(),·Set·::·<a·href="#t:a_set/0">a_set</a>().</pre> | 2003 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·domain(BinRel)·->·Set·when·BinRel·::·<a·href="#t:binary_relation/0">binary_relation</a>(),·Set·::·<a·href="#t:a_set/0">a_set</a>().</pre> |
| 2004 | ······</div> | 2004 | ······</div> |
| 2005 | <p>Returns·the·<a·href="sofs.html#domain">domain</a>·of·the·binary·relation·<code·class="inline">BinRel</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">R</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">relation</span><span·class="p"·data-group-id="3 | 2005 | <p>Returns·the·<a·href="sofs.html#domain">domain</a>·of·the·binary·relation·<code·class="inline">BinRel</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">R</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">relation</span><span·class="p"·data-group-id="2389873397-1">(</span><span·class="p"·data-group-id="2389873397-2">[</span><span·class="p"·data-group-id="2389873397-3">{</span><span·class="mi">1</span><span·class="p">,</span><span·class="ss">a</span><span·class="p"·data-group-id="2389873397-3">}</span><[·...·truncated·by·diffoscope;·len:·705,·SHA:·1ea3974d69df67153e597bd7ac333a30ebad48f09e1d25e75ff82578cb3cf44e·...·]-1">)</span><span·class="p">,</span><span·class="w"> |
| 2006 | </span><span·class="n">S</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">domain</span><span·class="p"·data-group-id="3 | 2006 | </span><span·class="n">S</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">domain</span><span·class="p"·data-group-id="2389873397-7">(</span><span·class="n">R</span><span·class="p"·data-group-id="2389873397-7">)</span><span·class="p">,</span><span·class="w"> |
| 2007 | </span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">to_external</span><span·class="p"·data-group-id="3 | 2007 | </span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">to_external</span><span·class="p"·data-group-id="2389873397-8">(</span><span·class="n">S</span><span·class="p"·data-group-id="2389873397-8">)</span><span·class="p">.</span><span·class="w"> |
| 2008 | </span><span·class="p"·data-group-id="3 | 2008 | </span><span·class="p"·data-group-id="2389873397-9">[</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="2389873397-9">]</span></code></pre> |
| 2009 | ··</section> | 2009 | ··</section> |
| 2010 | </section> | 2010 | </section> |
| 2011 | <section·class="detail"·id="drestriction/2"> | 2011 | <section·class="detail"·id="drestriction/2"> |
| 2012 | ··<div·class="detail-header"> | 2012 | ··<div·class="detail-header"> |
| 2013 | ····<a·href="#drestriction/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 2013 | ····<a·href="#drestriction/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 2014 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 2014 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 2033, 19 lines modified | Offset 2033, 19 lines modified | ||
| 2033 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·drestriction(BinRel1,·Set)·->·BinRel2 | 2033 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·drestriction(BinRel1,·Set)·->·BinRel2 |
| 2034 | ······················when·BinRel1·::·<a·href="#t:binary_relation/0">binary_relation</a>(),·BinRel2·::·<a·href="#t:binary_relation/0">binary_relation</a>(),·Set·::·<a·href="#t:a_set/0">a_set</a>().</pre> | 2034 | ······················when·BinRel1·::·<a·href="#t:binary_relation/0">binary_relation</a>(),·BinRel2·::·<a·href="#t:binary_relation/0">binary_relation</a>(),·Set·::·<a·href="#t:a_set/0">a_set</a>().</pre> |
| 2035 | ······</div> | 2035 | ······</div> |
| 2036 | <p>Returns·the·difference·between·the·binary·relation·<code·class="inline">BinRel1</code>·and·the | 2036 | <p>Returns·the·difference·between·the·binary·relation·<code·class="inline">BinRel1</code>·and·the |
| 2037 | <a·href="sofs.html#restriction">restriction</a>·of·<code·class="inline">BinRel1</code>·to·<code·class="inline">Set</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">R1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">relation</span><span·class="p"·data-group-id=" | 2037 | <a·href="sofs.html#restriction">restriction</a>·of·<code·class="inline">BinRel1</code>·to·<code·class="inline">Set</code>.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">R1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">relation</span><span·class="p"·data-group-id="2402889171-1">(</span><span·class="p"·data-group-id="2402889171-2">[</span><span·class="p"·data-group-id="2402889171-3">{</span><span·class="mi">1</span><span·class="p">,</span><span·class="ss">a</span><span·class="p"·data-group-id="2402889171-3">}</span><[·...·truncated·by·diffoscope;·len:·501,·SHA:·46e9585d405dede87d82adc3b939e8d9bdd35f0f99932463d7694ee3a24dc553·...·]-1">)</span><span·class="p">,</span><span·class="w"> |
| 2038 | </span><span·class="n">S</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">set</span><span·class="p"·data-group-id=" | 2038 | </span><span·class="n">S</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">set</span><span·class="p"·data-group-id="2402889171-6">(</span><span·class="p"·data-group-id="2402889171-7">[</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">6</span><span·class="p"·data-group-id="2402889171-7">]</span><span[·...·truncated·by·diffoscope;·len:·36,·SHA:·953d9ff9fa09169531c789c2be34bdc6e288392b2a2843b0f94410a152b08152·...·]-6">)</span><span·class="p">,</span><span·class="w"> |
| 2039 | </span><span·class="n">R2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">drestriction</span><span·class="p"·data-group-id=" | 2039 | </span><span·class="n">R2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">sofs</span><span·class="p">:</span><span·class="nf">drestriction</span><span·class="p"·data-group-id="2402889171-8">(</span><span·class="n">R1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">S</span><span·class="p"·data-group-id="2402889171-8">)</span><span·class="p">,</span><span·class="w"> |
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| 1 | Zip·archive·data,·made·by·v6.1·UNIX,·extract·using·at·least·v1.0,·last·modified,·last·modified·Sun,·Mar·18·2025·0 | 1 | Zip·archive·data,·made·by·v6.1·UNIX,·extract·using·at·least·v1.0,·last·modified,·last·modified·Sun,·Mar·18·2025·08:44:12,·uncompressed·size·20,·method=store |
| Offset 52, 21 lines modified | Offset 52, 21 lines modified | ||
| 52 | string·and·returns·a·formatted·expressions·as·a·string.·See | 52 | string·and·returns·a·formatted·expressions·as·a·string.·See |
| 53 | <a·href="shell.xhtml#format_shell_func/1"><code·class="inline">shell:format_shell_func/1</code></a>·for·how·to·set·it·from·inside·the·shell.</p><p>If·instead·a·string·is·provided,·it·will·be·used·as·a·shell·command.·Your | 53 | <a·href="shell.xhtml#format_shell_func/1"><code·class="inline">shell:format_shell_func/1</code></a>·for·how·to·set·it·from·inside·the·shell.</p><p>If·instead·a·string·is·provided,·it·will·be·used·as·a·shell·command.·Your |
| 54 | command·must·include·<code·class="inline">${file}</code>·somewhere·in·the·string,·for·the·shell·to·know | 54 | command·must·include·<code·class="inline">${file}</code>·somewhere·in·the·string,·for·the·shell·to·know |
| 55 | where·the·file·goes·in·the·command.</p><pre><code·class="text">-stdlib·format_shell_func·"\"emacs·-batch·\${file}·-l·~/erlang-format/emacs-format-file·-f·emacs-format-function\""</code></pre><pre><code·class="text">-stdlib·format_shell_func·"{shell,·erl_pp_format_func}"</code></pre></li><li><p><strong><code·class="inline"·id="shell_prompt_func">shell_prompt_func·=·{Mod,·Func}·|·default</code></strong>·-·where</p><ul><li><code·class="inline">Mod·=·atom()</code></li><li><code·class="inline">Func·=·atom()</code></li></ul><p>Can·be·used·to·set·a·customized·Erlang·shell·prompt·function.</p></li><li><p><strong><code·class="inline"·id="shell_multiline_prompt">shell_multiline_prompt·=·{Mod,·Func}·|·string()·|·default</code></strong>·-·where</p><ul><li><code·class="inline">Mod·=·atom()</code></li><li><code·class="inline">Func·=·atom()</code></li></ul><p>Can·be·used·to·set·a·customized·multiline·shell·prompt·function.·The·multiline | 55 | where·the·file·goes·in·the·command.</p><pre><code·class="text">-stdlib·format_shell_func·"\"emacs·-batch·\${file}·-l·~/erlang-format/emacs-format-file·-f·emacs-format-function\""</code></pre><pre><code·class="text">-stdlib·format_shell_func·"{shell,·erl_pp_format_func}"</code></pre></li><li><p><strong><code·class="inline"·id="shell_prompt_func">shell_prompt_func·=·{Mod,·Func}·|·default</code></strong>·-·where</p><ul><li><code·class="inline">Mod·=·atom()</code></li><li><code·class="inline">Func·=·atom()</code></li></ul><p>Can·be·used·to·set·a·customized·Erlang·shell·prompt·function.</p></li><li><p><strong><code·class="inline"·id="shell_multiline_prompt">shell_multiline_prompt·=·{Mod,·Func}·|·string()·|·default</code></strong>·-·where</p><ul><li><code·class="inline">Mod·=·atom()</code></li><li><code·class="inline">Func·=·atom()</code></li></ul><p>Can·be·used·to·set·a·customized·multiline·shell·prompt·function.·The·multiline |
| 56 | prompt·function·takes·the·main·prompt·as·its·only·parameter.</p></li><li><p><strong><code·class="inline"·id="shell_saved_results">shell_saved_results·=·integer()·>=·0</code></strong>·-·Can·be | 56 | prompt·function·takes·the·main·prompt·as·its·only·parameter.</p></li><li><p><strong><code·class="inline"·id="shell_saved_results">shell_saved_results·=·integer()·>=·0</code></strong>·-·Can·be |
| 57 | used·to·determine·how·many·results·are·saved·by·the·Erlang·shell.</p></li><li><p><strong><code·class="inline"·id="shell_session_slogan">shell_session_slogan·=·string()·|·fun()·->·string())</code></strong>·-·The·slogan·printed·when·starting·an·Erlang·shell. | 57 | used·to·determine·how·many·results·are·saved·by·the·Erlang·shell.</p></li><li><p><strong><code·class="inline"·id="shell_session_slogan">shell_session_slogan·=·string()·|·fun()·->·string())</code></strong>·-·The·slogan·printed·when·starting·an·Erlang·shell. |
| 58 | Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="ss">erl</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">stdlib</span><span·class="w">·</span><span·class="ss">shell_session_slogan</span><span·class="w">·</span><span·class="ss">'"Test·slogan"'</span><span·class="w"> | 58 | Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="ss">erl</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">stdlib</span><span·class="w">·</span><span·class="ss">shell_session_slogan</span><span·class="w">·</span><span·class="ss">'"Test·slogan"'</span><span·class="w"> |
| 59 | </span><span·class="n">Erlang</span><span·class="o">/</span><span·class="n">OTP</span><span·class="w">·</span><span·class="mi">26</span><span·class="w">·</span><span·class="p"·data-group-id=" | 59 | </span><span·class="n">Erlang</span><span·class="o">/</span><span·class="n">OTP</span><span·class="w">·</span><span·class="mi">26</span><span·class="w">·</span><span·class="p"·data-group-id="8468785451-1">[</span><span·class="n">DEVELOPMENT</span><span·class="p"·data-group-id="8468785451-1">]</span><span·class="w">·</span><span·class="p"·data-group-id="8468785451-2">[</span><span·class="ss">erts</span><span·class="o">-</span><span·class="mf">1[·...·truncated·by·diffoscope;·len:·1496,·SHA:·b92ffae940443ad0b7411e6996cfd5b0fa551f44277ab342f7d6789d49af2709·...·]-8">]</span><span·class="w"> |
| 60 | </span><span·class="n">Test</span><span·class="w">·</span><span·class="ss">slogan</span><span·class="w"> | 60 | </span><span·class="n">Test</span><span·class="w">·</span><span·class="ss">slogan</span><span·class="w"> |
| 61 | </span><span·class="mi">1</span><span·class="o">></span></code></pre></li><li><p><strong><code·class="inline"·id="shell_slogan">shell_slogan·=·string()·|·fun(()·->·string())</code></strong>·-·The | 61 | </span><span·class="mi">1</span><span·class="o">></span></code></pre></li><li><p><strong><code·class="inline"·id="shell_slogan">shell_slogan·=·string()·|·fun(()·->·string())</code></strong>·-·The |
| 62 | slogan·printed·when·starting·the·Erlang·shell·subsystem.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="ss">erl</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">stdlib</span><span·class="w">·</span><span·class="ss">shell_slogan</span><span·class="w">·</span><span·class="ss">'"Test·slogan"'</span><span·class="w"> | 62 | slogan·printed·when·starting·the·Erlang·shell·subsystem.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="ss">erl</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">stdlib</span><span·class="w">·</span><span·class="ss">shell_slogan</span><span·class="w">·</span><span·class="ss">'"Test·slogan"'</span><span·class="w"> |
| 63 | </span><span·class="n">Test</span><span·class="w">·</span><span·class="ss">slogan</span><span·class="w"> | 63 | </span><span·class="n">Test</span><span·class="w">·</span><span·class="ss">slogan</span><span·class="w"> |
| 64 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V13</span><span·class="p">.</span><span·class="mf">0.2</span><span·class="w">··</span><span·class="p"·data-group-id=" | 64 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V13</span><span·class="p">.</span><span·class="mf">0.2</span><span·class="w">··</span><span·class="p"·data-group-id="6663204518-1">(</span><span·class="ss">abort</span><span·class="w">·</span><span·class="ss">with</span><span·class="w">·</span><span·class="err">^</span><span·class="n">G</span><span·class="p"·data-group-id="6663204518-1">)</span><span·class="w"> |
| 65 | </span><span·class="mi">1</span><span·class="o">></span></code></pre><p>The·default·is·the·return·value·of | 65 | </span><span·class="mi">1</span><span·class="o">></span></code></pre><p>The·default·is·the·return·value·of |
| 66 | <a·href="../../../../lib/../erts/doc/html/erlang.html#system_info_system_version"><code·class="inline">erlang:system_info(system_version)</code></a>.</p></li><li><p><strong><code·class="inline"·id="shell_strings">shell_strings·=·boolean()</code></strong>·-·Can·be·used·to·determine | 66 | <a·href="../../../../lib/../erts/doc/html/erlang.html#system_info_system_version"><code·class="inline">erlang:system_info(system_version)</code></a>.</p></li><li><p><strong><code·class="inline"·id="shell_strings">shell_strings·=·boolean()</code></strong>·-·Can·be·used·to·determine |
| 67 | how·the·Erlang·shell·outputs·lists·of·integers.</p></li></ul><h2·id="see-also"·class="section-heading"> | 67 | how·the·Erlang·shell·outputs·lists·of·integers.</p></li></ul><h2·id="see-also"·class="section-heading"> |
| 68 | ··<a·href="#see-also"·class="hover-link"> | 68 | ··<a·href="#see-also"·class="hover-link"> |
| 69 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 69 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 70 | ··</a> | 70 | ··</a> |
| 71 | ··<span·class="text">See·Also</span> | 71 | ··<span·class="text">See·Also</span> |
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| 251 | ······</div> | 251 | ······</div> |
| 252 | <p>Starts·a·number·of·pseudo·servers.·A·pseudo·server·is·a·server·with·a·registered | 252 | <p>Starts·a·number·of·pseudo·servers.·A·pseudo·server·is·a·server·with·a·registered |
| 253 | name·that·does·nothing·but·pass·on·all·message·to·the·real·server·that·executes | 253 | name·that·does·nothing·but·pass·on·all·message·to·the·real·server·that·executes |
| 254 | at·a·master·node.·A·pseudo·server·is·an·intermediary·that·only·has·the·same | 254 | at·a·master·node.·A·pseudo·server·is·an·intermediary·that·only·has·the·same |
| 255 | registered·name·as·the·real·server.</p><p>For·example,·if·you·have·started·a·slave·node·<code·class="inline">N</code>·and·want·to·execute·<code·class="inline">pxw</code> | 255 | registered·name·as·the·real·server.</p><p>For·example,·if·you·have·started·a·slave·node·<code·class="inline">N</code>·and·want·to·execute·<code·class="inline">pxw</code> |
| 256 | graphics·code·on·this·node,·you·can·start·server·<code·class="inline">pxw_server</code>·as·a·pseudo·server | 256 | graphics·code·on·this·node,·you·can·start·server·<code·class="inline">pxw_server</code>·as·a·pseudo·server |
| 257 | at·the·slave·node.·This·is·illustrated·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nc">rpc</samp><samp·class="p">:</samp><samp·class="nf">call</samp><samp·class="p"·data-group-id=" | 257 | at·the·slave·node.·This·is·illustrated·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nc">rpc</samp><samp·class="p">:</samp><samp·class="nf">call</samp><samp·class="p"·data-group-id="6612780441-1">(</samp><samp·class="n">N</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="ss">slave</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="ss">pseudo</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·c[·...·truncated·by·diffoscope;·len:·462,·SHA:·e75cf84e116fe39131ed7c56abbb2e83e031ceeb821c3f5cf5162cb6e18a3cde·...·]-1">)</samp><samp·class="p">.</samp></code></pre> |
| 258 | ··</section> | 258 | ··</section> |
| 259 | </section> | 259 | </section> |
| 260 | <section·class="detail"·id="relay/1"> | 260 | <section·class="detail"·id="relay/1"> |
| 261 | ··<div·class="detail-header"> | 261 | ··<div·class="detail-header"> |
| 262 | ····<a·href="#relay/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 262 | ····<a·href="#relay/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 263 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 263 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 397 | as·fully·qualified·names;·short·names·can·also·be·used.·This·is·the·same | 397 | as·fully·qualified·names;·short·names·can·also·be·used.·This·is·the·same |
| 398 | condition·that·applies·to·names·of·distributed·Erlang·nodes.</p><p>The·name·of·the·started·node·becomes·<code·class="inline">Name@Host</code>.</p><p>The·slave·node·resets·its·<a·href="io.xhtml#t:user/0"><code·class="inline">io:user/0</code></a>·process·so·that·all·terminal·I/O·that·is | 398 | condition·that·applies·to·names·of·distributed·Erlang·nodes.</p><p>The·name·of·the·started·node·becomes·<code·class="inline">Name@Host</code>.</p><p>The·slave·node·resets·its·<a·href="io.xhtml#t:user/0"><code·class="inline">io:user/0</code></a>·process·so·that·all·terminal·I/O·that·is |
| 399 | produced·at·the·slave·is·automatically·relayed·to·the·master.·Also,·the·file | 399 | produced·at·the·slave·is·automatically·relayed·to·the·master.·Also,·the·file |
| 400 | server·is·relayed·to·the·master.</p><p>Argument·<code·class="inline">Args</code>·is·used·to·set·<code·class="inline">erl</code>·command-line·arguments.·It·is | 400 | server·is·relayed·to·the·master.</p><p>Argument·<code·class="inline">Args</code>·is·used·to·set·<code·class="inline">erl</code>·command-line·arguments.·It·is |
| 401 | passed·to·the·new·node·and·can·be·used·for·a·variety·of·purposes;·see | 401 | passed·to·the·new·node·and·can·be·used·for·a·variety·of·purposes;·see |
| 402 | <a·href="../../../../lib/../erts/doc/html/erl_cmd.xhtml"><code·class="inline">erl(1)</code></a>.</p><p>As·an·example,·suppose·that·you·want·to·start·a·slave·node·at·host·<code·class="inline">H</code>·with·node | 402 | <a·href="../../../../lib/../erts/doc/html/erl_cmd.xhtml"><code·class="inline">erl(1)</code></a>.</p><p>As·an·example,·suppose·that·you·want·to·start·a·slave·node·at·host·<code·class="inline">H</code>·with·node |
| 403 | name·<code·class="inline">Name@H</code>·and·want·the·slave·node·to·have·the·following·properties:</p><ul><li>Directory·<code·class="inline">Dir</code>·is·to·be·added·to·the·code·path.</li><li>The·Mnesia·directory·is·to·be·set·to·<code·class="inline">M</code>.</li><li>The·Unix·<code·class="inline">DISPLAY</code>·environment·variable·is·to·be·set·to·the·display·of·the | 403 | name·<code·class="inline">Name@H</code>·and·want·the·slave·node·to·have·the·following·properties:</p><ul><li>Directory·<code·class="inline">Dir</code>·is·to·be·added·to·the·code·path.</li><li>The·Mnesia·directory·is·to·be·set·to·<code·class="inline">M</code>.</li><li>The·Unix·<code·class="inline">DISPLAY</code>·environment·variable·is·to·be·set·to·the·display·of·the |
| 404 | master·node.</li></ul><p>The·following·code·is·executed·to·achieve·this:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="n">E</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="s">"·-env·DISPLAY·"</samp><samp·class="w">·</samp><samp·class="o">++</samp><samp·class="w">·</samp><samp·class="nc">net_adm</samp><samp·class="p">:</samp><samp·class="nf">localhost</samp><samp·class="p"·data-group-id=" | 404 | master·node.</li></ul><p>The·following·code·is·executed·to·achieve·this:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="n">E</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="s">"·-env·DISPLAY·"</samp><samp·class="w">·</samp><samp·class="o">++</samp><samp·class="w">·</samp><samp·class="nc">net_adm</samp><samp·class="p">:</samp><samp·class="nf">localhost</samp><samp·class="p"·data-group-id="1785411932-1">(</samp><samp·class="p"·data-group-id="1785411932-1">)</samp><samp·class="w">·</samp><samp·class="o">++</samp><samp·class="w">·</samp><samp·class="s">":0·"</samp><samp·class="p">,</samp><samp·class="w"> |
| 405 | </samp><samp·class="n">Arg</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="s">"-mnesia_dir·"</samp><samp·class="w">·</samp><samp·class="o">++</samp><samp·class="w">·</samp><samp·class="n">M</samp><samp·class="w">·</samp><samp·class="o">++</samp><samp·class="w">·</samp><samp·class="s">"·-pa·"</samp><samp·class="w">·</samp><samp·class="o">++</samp><samp·class="w">·</samp><samp·class="n">Dir</samp><samp·class="w">·</samp><samp·class="o">++</samp><samp·class="w">·</samp><samp·class="n">E</samp><samp·class="p">,</samp><samp·class="w"> | 405 | </samp><samp·class="n">Arg</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·class="s">"-mnesia_dir·"</samp><samp·class="w">·</samp><samp·class="o">++</samp><samp·class="w">·</samp><samp·class="n">M</samp><samp·class="w">·</samp><samp·class="o">++</samp><samp·class="w">·</samp><samp·class="s">"·-pa·"</samp><samp·class="w">·</samp><samp·class="o">++</samp><samp·class="w">·</samp><samp·class="n">Dir</samp><samp·class="w">·</samp><samp·class="o">++</samp><samp·class="w">·</samp><samp·class="n">E</samp><samp·class="p">,</samp><samp·class="w"> |
| 406 | </samp><samp·class="nc">slave</samp><samp·class="p">:</samp><samp·class="nf">start</samp><samp·class="p"·data-group-id=" | 406 | </samp><samp·class="nc">slave</samp><samp·class="p">:</samp><samp·class="nf">start</samp><samp·class="p"·data-group-id="1785411932-2">(</samp><samp·class="n">H</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Name</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Arg</samp><samp·class="p"·data-group-id="1785411932-2">)</samp><samp·class="p">.</samp></code></pre><p>The·function·returns·<code·class="inline">{ok,·Node}</code>,·where·<code·class="inline">Node</code>·is·the·name·of·the·new·node, |
| 407 | otherwise·<code·class="inline">{error,·Reason}</code>,·where·<code·class="inline">Reason</code>·can·be·one·of:</p><ul><li><p><strong><code·class="inline">timeout</code></strong>·-·The·master·node·failed·to·get·in·contact·with·the·slave·node. | 407 | otherwise·<code·class="inline">{error,·Reason}</code>,·where·<code·class="inline">Reason</code>·can·be·one·of:</p><ul><li><p><strong><code·class="inline">timeout</code></strong>·-·The·master·node·failed·to·get·in·contact·with·the·slave·node. |
| 408 | This·can·occur·in·a·number·of·circumstances:</p><ul><li>Erlang/OTP·is·not·installed·on·the·remote·host.</li><li>The·file·system·on·the·other·host·has·a·different·structure·to·the·the | 408 | This·can·occur·in·a·number·of·circumstances:</p><ul><li>Erlang/OTP·is·not·installed·on·the·remote·host.</li><li>The·file·system·on·the·other·host·has·a·different·structure·to·the·the |
| 409 | master.</li><li>The·Erlang·nodes·have·different·cookies.</li></ul></li><li><p><strong><code·class="inline">no_rsh</code></strong>·-·No·remote·shell·program·was·found·on·the·computer.·Note·that | 409 | master.</li><li>The·Erlang·nodes·have·different·cookies.</li></ul></li><li><p><strong><code·class="inline">no_rsh</code></strong>·-·No·remote·shell·program·was·found·on·the·computer.·Note·that |
| 410 | <code·class="inline">ssh</code>·is·used·by·default,·but·this·can·be·overridden·with·the·<code·class="inline">-rsh</code>·flag.</p></li><li><p><strong><code·class="inline">{already_running,·Node}</code></strong>·-·A·node·with·name·<code·class="inline">Name@Host</code>·already·exists.</p></li></ul> | 410 | <code·class="inline">ssh</code>·is·used·by·default,·but·this·can·be·overridden·with·the·<code·class="inline">-rsh</code>·flag.</p></li><li><p><strong><code·class="inline">{already_running,·Node}</code></strong>·-·A·node·with·name·<code·class="inline">Name@Host</code>·already·exists.</p></li></ul> |
| 411 | ··</section> | 411 | ··</section> |
| 412 | </section> | 412 | </section> |
| 413 | <section·class="detail"·id="start_link/1"> | 413 | <section·class="detail"·id="start_link/1"> |
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| 20 | ····<h1·id="content"> | 20 | ····<h1·id="content"> |
| 21 | shell_default· | 21 | shell_default· |
| 22 | ····</h1> | 22 | ····</h1> |
| 23 | ······<section·id="moduledoc"·class="docstring"> | 23 | ······<section·id="moduledoc"·class="docstring"> |
| 24 | <p>Customizing·the·Erlang·environment.</p><p>The·functions·in·this·module·are·called·when·no·module·name·is·specified·in·a | 24 | <p>Customizing·the·Erlang·environment.</p><p>The·functions·in·this·module·are·called·when·no·module·name·is·specified·in·a |
| 25 | shell·command.</p><p>Consider·the·following·shell·dialog:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="gp·unselectable">1>·</samp><samp·class="nc">lists</samp><samp·class="p">:</samp><samp·class="nf">reverse</samp><samp·class="p"·data-group-id=" | 25 | shell·command.</p><p>Consider·the·following·shell·dialog:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="gp·unselectable">1>·</samp><samp·class="nc">lists</samp><samp·class="p">:</samp><samp·class="nf">reverse</samp><samp·class="p"·data-group-id="7120272379-1">(</samp><samp·class="s">"abc"</samp><samp·class="p"·data-group-id="7120272379-1">)</samp><samp·class="p">.</samp><samp·class="w"> |
| 26 | </samp><samp·class="s">"cba"</samp><samp·class="gp·unselectable"> | 26 | </samp><samp·class="s">"cba"</samp><samp·class="gp·unselectable"> |
| 27 | 2>·</samp><samp·class="nf">c</samp><samp·class="p"·data-group-id=" | 27 | 2>·</samp><samp·class="nf">c</samp><samp·class="p"·data-group-id="7120272379-2">(</samp><samp·class="ss">foo</samp><samp·class="p"·data-group-id="7120272379-2">)</samp><samp·class="p">.</samp><samp·class="w"> |
| 28 | </samp><samp·class="p"·data-group-id=" | 28 | </samp><samp·class="p"·data-group-id="7120272379-3">{</samp><samp·class="ss">ok</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="ss">foo</samp><samp·class="p"·data-group-id="7120272379-3">}</samp></code></pre><p>In·command·one,·module·<a·href="lists.xhtml"><code·class="inline">lists</code></a>·is·called.·In·command·two,·no·module·name·is |
| 29 | specified.·The·shell·searches·module·<code·class="inline">user_default</code>·followed·by·module | 29 | specified.·The·shell·searches·module·<code·class="inline">user_default</code>·followed·by·module |
| 30 | <code·class="inline">shell_default</code>·for·function·<code·class="inline">c/1</code>.</p><p><code·class="inline">shell_default</code>·is·intended·for·"system·wide"·customizations·to·the·shell. | 30 | <code·class="inline">shell_default</code>·for·function·<code·class="inline">c/1</code>.</p><p><code·class="inline">shell_default</code>·is·intended·for·"system·wide"·customizations·to·the·shell. |
| 31 | <code·class="inline">user_default</code>·is·intended·for·"local"·or·individual·user·customizations.</p><h2·id="module-hint"·class="section-heading"> | 31 | <code·class="inline">user_default</code>·is·intended·for·"local"·or·individual·user·customizations.</p><h2·id="module-hint"·class="section-heading"> |
| 32 | ··<a·href="#module-hint"·class="hover-link"> | 32 | ··<a·href="#module-hint"·class="hover-link"> |
| 33 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 33 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 34 | ··</a> | 34 | ··</a> |
| 35 | ··<span·class="text">Hint</span> | 35 | ··<span·class="text">Hint</span> |
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| 47 | <p>The·following·functions·in·this·module·also·exist·and·provide·the·same | 47 | <p>The·following·functions·in·this·module·also·exist·and·provide·the·same |
| 48 | functionality·in·the·<a·href="gb_sets.xhtml"><code·class="inline">gb_sets</code></a>·and·<a·href="ordsets.xhtml"><code·class="inline">ordsets</code></a>·modules.·That·is,·by·only | 48 | functionality·in·the·<a·href="gb_sets.xhtml"><code·class="inline">gb_sets</code></a>·and·<a·href="ordsets.xhtml"><code·class="inline">ordsets</code></a>·modules.·That·is,·by·only |
| 49 | changing·the·module·name·for·each·call,·you·can·try·out·different·set | 49 | changing·the·module·name·for·each·call,·you·can·try·out·different·set |
| 50 | representations.</p><ul><li><a·href="#add_element/2"><code·class="inline">add_element/2</code></a></li><li><a·href="#del_element/2"><code·class="inline">del_element/2</code></a></li><li><a·href="#filter/2"><code·class="inline">filter/2</code></a></li><li><a·href="#filtermap/2"><code·class="inline">filtermap/2</code></a></li><li><a·href="#fold/3"><code·class="inline">fold/3</code></a></li><li><a·href="#from_list/1"><code·class="inline">from_list/1</code></a></li><li><a·href="#intersection/1"><code·class="inline">intersection/1</code></a></li><li><a·href="#intersection/2"><code·class="inline">intersection/2</code></a></li><li><a·href="#is_element/2"><code·class="inline">is_element/2</code></a></li><li><a·href="#is_empty/1"><code·class="inline">is_empty/1</code></a></li><li><a·href="#is_equal/2"><code·class="inline">is_equal/2</code></a></li><li><a·href="#is_set/1"><code·class="inline">is_set/1</code></a></li><li><a·href="#is_subset/2"><code·class="inline">is_subset/2</code></a></li><li><a·href="#map/2"><code·class="inline">map/2</code></a></li><li><a·href="#new/0"><code·class="inline">new/0</code></a></li><li><a·href="#size/1"><code·class="inline">size/1</code></a></li><li><a·href="#subtract/2"><code·class="inline">subtract/2</code></a></li><li><a·href="#to_list/1"><code·class="inline">to_list/1</code></a></li><li><a·href="#union/1"><code·class="inline">union/1</code></a></li><li><a·href="#union/2"><code·class="inline">union/2</code></a></li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>While·the·three·set·implementations·offer·the·same·<em>functionality</em>·with | 50 | representations.</p><ul><li><a·href="#add_element/2"><code·class="inline">add_element/2</code></a></li><li><a·href="#del_element/2"><code·class="inline">del_element/2</code></a></li><li><a·href="#filter/2"><code·class="inline">filter/2</code></a></li><li><a·href="#filtermap/2"><code·class="inline">filtermap/2</code></a></li><li><a·href="#fold/3"><code·class="inline">fold/3</code></a></li><li><a·href="#from_list/1"><code·class="inline">from_list/1</code></a></li><li><a·href="#intersection/1"><code·class="inline">intersection/1</code></a></li><li><a·href="#intersection/2"><code·class="inline">intersection/2</code></a></li><li><a·href="#is_element/2"><code·class="inline">is_element/2</code></a></li><li><a·href="#is_empty/1"><code·class="inline">is_empty/1</code></a></li><li><a·href="#is_equal/2"><code·class="inline">is_equal/2</code></a></li><li><a·href="#is_set/1"><code·class="inline">is_set/1</code></a></li><li><a·href="#is_subset/2"><code·class="inline">is_subset/2</code></a></li><li><a·href="#map/2"><code·class="inline">map/2</code></a></li><li><a·href="#new/0"><code·class="inline">new/0</code></a></li><li><a·href="#size/1"><code·class="inline">size/1</code></a></li><li><a·href="#subtract/2"><code·class="inline">subtract/2</code></a></li><li><a·href="#to_list/1"><code·class="inline">to_list/1</code></a></li><li><a·href="#union/1"><code·class="inline">union/1</code></a></li><li><a·href="#union/2"><code·class="inline">union/2</code></a></li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>While·the·three·set·implementations·offer·the·same·<em>functionality</em>·with |
| 51 | respect·to·the·aforementioned·functions,·their·overall·<em>behavior</em>·may·differ. | 51 | respect·to·the·aforementioned·functions,·their·overall·<em>behavior</em>·may·differ. |
| 52 | As·mentioned,·this·module·considers·elements·as·different·if·and·only·if·they | 52 | As·mentioned,·this·module·considers·elements·as·different·if·and·only·if·they |
| 53 | do·not·match·(<code·class="inline">=:=</code>),·while·both·<a·href="ordsets.xhtml"><code·class="inline">ordsets</code></a>·and·<a·href="gb_sets.xhtml"><code·class="inline">gb_sets</code></a>·consider·elements | 53 | do·not·match·(<code·class="inline">=:=</code>),·while·both·<a·href="ordsets.xhtml"><code·class="inline">ordsets</code></a>·and·<a·href="gb_sets.xhtml"><code·class="inline">gb_sets</code></a>·consider·elements |
| 54 | as·different·if·and·only·if·they·do·not·compare·equal·(<code·class="inline">==</code>).</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><samp·class="gp·unselectable">1>·</samp><samp·class="nc">sets</samp><samp·class="p">:</samp><samp·class="nf">is_element</samp><samp·class="p"·data-group-id="3 | 54 | as·different·if·and·only·if·they·do·not·compare·equal·(<code·class="inline">==</code>).</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><samp·class="gp·unselectable">1>·</samp><samp·class="nc">sets</samp><samp·class="p">:</samp><samp·class="nf">is_element</samp><samp·class="p"·data-group-id="3035144023-1">(</samp><samp·class="mf">1.0</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="nc">sets</samp><samp·class="p">:</samp><samp·class="nf">from_list</samp><samp·class="p"·data-group-id="3035144023-2">(</samp><samp·class="p"·data-g[·...·truncated·by·diffoscope;·len:·203,·SHA:·93ebcf979ac068e65f22118d15cfdf17b135597b6e39d57580b5f963763e584b·...·]-1">)</samp><samp·class="p">.</samp><samp·class="w"> |
| 55 | </samp><samp·class="ss">false</samp><samp·class="gp·unselectable"> | 55 | </samp><samp·class="ss">false</samp><samp·class="gp·unselectable"> |
| 56 | 2>·</samp><samp·class="nc">ordsets</samp><samp·class="p">:</samp><samp·class="nf">is_element</samp><samp·class="p"·data-group-id="3 | 56 | 2>·</samp><samp·class="nc">ordsets</samp><samp·class="p">:</samp><samp·class="nf">is_element</samp><samp·class="p"·data-group-id="3035144023-4">(</samp><samp·class="mf">1.0</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="nc">ordsets</samp><samp·class="p">:</samp><samp·class="nf">from_list</samp><samp·class="p"·data-group-id="3035144023-5">(</samp><samp·class="p"·dat[·...·truncated·by·diffoscope;·len:·206,·SHA:·410917141581396579007fd598a880da9cbe95446d9d5aa325bb74f95515e2a2·...·]-4">)</samp><samp·class="p">.</samp><samp·class="w"> |
| 57 | </samp><samp·class="ss">true</samp><samp·class="gp·unselectable"> | 57 | </samp><samp·class="ss">true</samp><samp·class="gp·unselectable"> |
| 58 | 2>·</samp><samp·class="nc">gb_sets</samp><samp·class="p">:</samp><samp·class="nf">is_element</samp><samp·class="p"·data-group-id="3 | 58 | 2>·</samp><samp·class="nc">gb_sets</samp><samp·class="p">:</samp><samp·class="nf">is_element</samp><samp·class="p"·data-group-id="3035144023-7">(</samp><samp·class="mf">1.0</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="nc">gb_sets</samp><samp·class="p">:</samp><samp·class="nf">from_list</samp><samp·class="p"·data-group-id="3035144023-8">(</samp><samp·class="p"·dat[·...·truncated·by·diffoscope;·len:·206,·SHA:·e47d2c5c3a077346535e46cda4bcd34efe389436f5da464d395a2218d404330b·...·]-7">)</samp><samp·class="p">.</samp><samp·class="w"> |
| 59 | </samp><samp·class="ss">true</samp></code></pre></section><h2·id="module-see-also"·class="section-heading"> | 59 | </samp><samp·class="ss">true</samp></code></pre></section><h2·id="module-see-also"·class="section-heading"> |
| 60 | ··<a·href="#module-see-also"·class="hover-link"> | 60 | ··<a·href="#module-see-also"·class="hover-link"> |
| 61 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 61 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 62 | ··</a> | 62 | ··</a> |
| 63 | ··<span·class="text">See·Also</span> | 63 | ··<span·class="text">See·Also</span> |
| 64 | </h2> | 64 | </h2> |
| 65 | <p><a·href="gb_sets.xhtml"><code·class="inline">gb_sets</code></a>,·<a·href="ordsets.xhtml"><code·class="inline">ordsets</code></a></p> | 65 | <p><a·href="gb_sets.xhtml"><code·class="inline">gb_sets</code></a>,·<a·href="ordsets.xhtml"><code·class="inline">ordsets</code></a></p> |
| Offset 337, 17 lines modified | Offset 337, 17 lines modified | ||
| 337 | ······<div·class="specs"> | 337 | ······<div·class="specs"> |
| 338 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·seed(A1,·A2,·A3)·->·undefined·|·<a·href="#t:ran/0">ran</a>()·when·A1·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:integer/0">integer</a>(),·A2·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:integer/0">integer</a>(),·A3·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:integer/0">integer</a>().</pre> | 338 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·seed(A1,·A2,·A3)·->·undefined·|·<a·href="#t:ran/0">ran</a>()·when·A1·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:integer/0">integer</a>(),·A2·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:integer/0">integer</a>(),·A3·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:integer/0">integer</a>().</pre> |
| 339 | ······</div> | 339 | ······</div> |
| 340 | <p>Seeds·random·number·generation·with·integer·values·in·the·process·dictionary·and | 340 | <p>Seeds·random·number·generation·with·integer·values·in·the·process·dictionary·and |
| 341 | returns·the·old·state.</p><p>The·following·is·an·easy·way·of·obtaining·a·unique·value·to·seed·with:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nc">random</samp><samp·class="p">:</samp><samp·class="nf">seed</samp><samp·class="p"·data-group-id=" | 341 | returns·the·old·state.</p><p>The·following·is·an·easy·way·of·obtaining·a·unique·value·to·seed·with:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nc">random</samp><samp·class="p">:</samp><samp·class="nf">seed</samp><samp·class="p"·data-group-id="6859787589-1">(</samp><samp·class="nc">erlang</samp><samp·class="p">:</samp><samp·class="nf">phash2</samp><samp·class="p"·data-group-id="6859787589-2">(</samp><samp·class="p"·data-group-id="6859787589-3">[</samp><samp·class="nf">node</samp><samp·class="p"·[·...·truncated·by·diffoscope;·len:·184,·SHA:·2b4499177fbe38410ad1f359a60de0e00d92e51abf66594eec4b8c8cb669e79f·...·]-2">)</samp><samp·class="p">,</samp><samp·class="w"> |
| 342 | ············</samp><samp·class="nc">erlang</samp><samp·class="p">:</samp><samp·class="nf">monotonic_time</samp><samp·class="p"·data-group-id=" | 342 | ············</samp><samp·class="nc">erlang</samp><samp·class="p">:</samp><samp·class="nf">monotonic_time</samp><samp·class="p"·data-group-id="6859787589-5">(</samp><samp·class="p"·data-group-id="6859787589-5">)</samp><samp·class="p">,</samp><samp·class="w"> |
| 343 | ············</samp><samp·class="nc">erlang</samp><samp·class="p">:</samp><samp·class="nf">unique_integer</samp><samp·class="p"·data-group-id=" | 343 | ············</samp><samp·class="nc">erlang</samp><samp·class="p">:</samp><samp·class="nf">unique_integer</samp><samp·class="p"·data-group-id="6859787589-6">(</samp><samp·class="p"·data-group-id="6859787589-6">)</samp><samp·class="p"·data-group-id="6859787589-1">)</samp></code></pre><p>For·details,·see·<a·href="../../../../lib/../erts/doc/html/erlang.html#phash2/1"><code·class="inline">erlang:phash2/1</code></a>,·<a·href="../../../../lib/../erts/doc/html/erlang.html#node/0"><code·class="inline">erlang:node/0</code></a>,·<a·href="../../../../lib/../erts/doc/html/erlang.html#monotonic_time/0"><code·class="inline">erlang:monotonic_time/0</code></a>, |
| 344 | and·<a·href="../../../../lib/../erts/doc/html/erlang.html#unique_integer/0"><code·class="inline">erlang:unique_integer/0</code></a>.</p> | 344 | and·<a·href="../../../../lib/../erts/doc/html/erlang.html#unique_integer/0"><code·class="inline">erlang:unique_integer/0</code></a>.</p> |
| 345 | ··</section> | 345 | ··</section> |
| 346 | </section> | 346 | </section> |
| 347 | <section·class="detail"·id="uniform/0"> | 347 | <section·class="detail"·id="uniform/0"> |
| 348 | ··<div·class="detail-header"> | 348 | ··<div·class="detail-header"> |
| 349 | ····<a·href="#uniform/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 349 | ····<a·href="#uniform/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 1126, 23 lines modified | Offset 1126, 23 lines modified | ||
| 1126 | format/limit·the·server·state·for·debugging·and·logging·purposes.</p><p>It·is·called·in·the·following·situations:</p><ul><li><a·href="sys.xhtml#get_status/1"><code·class="inline">sys:get_status/1,2</code></a>·is·invoked | 1126 | format/limit·the·server·state·for·debugging·and·logging·purposes.</p><p>It·is·called·in·the·following·situations:</p><ul><li><a·href="sys.xhtml#get_status/1"><code·class="inline">sys:get_status/1,2</code></a>·is·invoked |
| 1127 | to·get·the·<code·class="inline">gen_server</code>·status.</li><li>The·<code·class="inline">gen_server</code>·process·terminates·abnormally·and·logs·an·error.</li></ul><p>This·callback·is·used·to·limit·the·status·of·the·process·returned·by | 1127 | to·get·the·<code·class="inline">gen_server</code>·status.</li><li>The·<code·class="inline">gen_server</code>·process·terminates·abnormally·and·logs·an·error.</li></ul><p>This·callback·is·used·to·limit·the·status·of·the·process·returned·by |
| 1128 | <a·href="sys.xhtml#get_status/1"><code·class="inline">sys:get_status/1,2</code></a>·or·sent·to·<a·href="../../../../lib/kernel/doc/html/logger.html"><code·class="inline">logger</code></a>.</p><p>The·callback·gets·a·map·<code·class="inline">Status</code>·describing·the·current·status | 1128 | <a·href="sys.xhtml#get_status/1"><code·class="inline">sys:get_status/1,2</code></a>·or·sent·to·<a·href="../../../../lib/kernel/doc/html/logger.html"><code·class="inline">logger</code></a>.</p><p>The·callback·gets·a·map·<code·class="inline">Status</code>·describing·the·current·status |
| 1129 | and·shall·return·a·map·<code·class="inline">NewStatus</code>·with·the·same·keys, | 1129 | and·shall·return·a·map·<code·class="inline">NewStatus</code>·with·the·same·keys, |
| 1130 | but·it·may·transform·some·values.</p><p>Two·possible·use·cases·for·this·callback·is·to·remove | 1130 | but·it·may·transform·some·values.</p><p>Two·possible·use·cases·for·this·callback·is·to·remove |
| 1131 | sensitive·information·from·the·state·to·prevent·it·from·being·printed | 1131 | sensitive·information·from·the·state·to·prevent·it·from·being·printed |
| 1132 | in·log·files,·or·to·compact·large·irrelevant·status·items | 1132 | in·log·files,·or·to·compact·large·irrelevant·status·items |
| 1133 | that·would·only·clutter·the·logs.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nf">format_status</samp><samp·class="p"·data-group-id=" | 1133 | that·would·only·clutter·the·logs.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nf">format_status</samp><samp·class="p"·data-group-id="3464679516-1">(</samp><samp·class="n">Status</samp><samp·class="p"·data-group-id="3464679516-1">)</samp><samp·class="w">·</samp><samp·class="p">-></samp><samp·class="w"> |
| 1134 | ··</samp><samp·class="nc">maps</samp><samp·class="p">:</samp><samp·class="nf">map</samp><samp·class="p"·data-group-id=" | 1134 | ··</samp><samp·class="nc">maps</samp><samp·class="p">:</samp><samp·class="nf">map</samp><samp·class="p"·data-group-id="3464679516-2">(</samp><samp·class="w"> |
| 1135 | ····</samp><samp·class="nf">fun</samp><samp·class="p"·data-group-id=" | 1135 | ····</samp><samp·class="nf">fun</samp><samp·class="p"·data-group-id="3464679516-3">(</samp><samp·class="ss">state</samp><samp·class="p">,</samp><samp·class="n">State</samp><samp·class="p"·data-group-id="3464679516-3">)</samp><samp·class="w">·</samp><samp·class="p">-></samp><samp·class="w"> |
| 1136 | ············</samp><samp·class="nc">maps</samp><samp·class="p">:</samp><samp·class="nf">remove</samp><samp·class="p"·data-group-id=" | 1136 | ············</samp><samp·class="nc">maps</samp><samp·class="p">:</samp><samp·class="nf">remove</samp><samp·class="p"·data-group-id="3464679516-4">(</samp><samp·class="ss">private_key</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">State</samp><samp·class="p"·data-group-id="3464679516-4">)</samp><samp·class="p">;</samp><samp·class="w"> |
| 1137 | ·······</samp><samp·class="p"·data-group-id=" | 1137 | ·······</samp><samp·class="p"·data-group-id="3464679516-5">(</samp><samp·class="ss">message</samp><samp·class="p">,</samp><samp·class="p"·data-group-id="3464679516-6">{</samp><samp·class="ss">password</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="p">_</samp><samp·class="n">Pass</[·...·truncated·by·diffoscope;·len:·99,·SHA:·3f31d1177bb27f33c462ef52e3d756b1e3f7e7037d9704605be9a5816235b812·...·]-5">)</samp><samp·class="w">·</samp><samp·class="p">-></samp><samp·class="w"> |
| 1138 | ············</samp><samp·class="p"·data-group-id=" | 1138 | ············</samp><samp·class="p"·data-group-id="3464679516-7">{</samp><samp·class="ss">password</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="ss">removed</samp><samp·class="p"·data-group-id="3464679516-7">}</samp><samp·class="p">;</samp><samp·class="w"> |
| 1139 | ·······</samp><samp·class="p"·data-group-id=" | 1139 | ·······</samp><samp·class="p"·data-group-id="3464679516-8">(</samp><samp·class="p">_</samp><samp·class="p">,</samp><samp·class="n">Value</samp><samp·class="p"·data-group-id="3464679516-8">)</samp><samp·class="w">·</samp><samp·class="p">-></samp><samp·class="w"> |
| 1140 | ············</samp><samp·class="n">Value</samp><samp·class="w"> | 1140 | ············</samp><samp·class="n">Value</samp><samp·class="w"> |
| 1141 | ····</samp><samp·class="k">end</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Status</samp><samp·class="p"·data-group-id=" | 1141 | ····</samp><samp·class="k">end</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Status</samp><samp·class="p"·data-group-id="3464679516-2">)</samp><samp·class="p">.</samp></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>This·callback·is·optional,·so·callback·modules·need·not·export·it.·The |
| 1142 | <code·class="inline">gen_server</code>·module·provides·a·default·implementation | 1142 | <code·class="inline">gen_server</code>·module·provides·a·default·implementation |
| 1143 | of·this·function·that·returns·the·callback·module·state.</p><p>If·this·callback·is·exported·but·fails, | 1143 | of·this·function·that·returns·the·callback·module·state.</p><p>If·this·callback·is·exported·but·fails, |
| 1144 | to·hide·possibly·sensitive·data, | 1144 | to·hide·possibly·sensitive·data, |
| 1145 | the·default·function·will·instead·return·the·fact·that | 1145 | the·default·function·will·instead·return·the·fact·that |
| 1146 | <a·href="#c:format_status/1"><code·class="inline">Module:format_status/1</code></a>·has·crashed.</p></section> | 1146 | <a·href="#c:format_status/1"><code·class="inline">Module:format_status/1</code></a>·has·crashed.</p></section> |
| 1147 | ··</section> | 1147 | ··</section> |
| 1148 | </section> | 1148 | </section> |
| Offset 1146, 23 lines modified | Offset 1146, 23 lines modified | ||
| 1146 | format/limit·the·server·state·for·debugging·and·logging·purposes.</p><p>It·is·called·in·the·following·situations:</p><ul><li><p>One·of·<a·href="sys.xhtml#get_status/1"><code·class="inline">sys:get_status/1,2</code></a>·is·invoked | 1146 | format/limit·the·server·state·for·debugging·and·logging·purposes.</p><p>It·is·called·in·the·following·situations:</p><ul><li><p>One·of·<a·href="sys.xhtml#get_status/1"><code·class="inline">sys:get_status/1,2</code></a>·is·invoked |
| 1147 | to·get·the·<code·class="inline">gen_event</code>·status.</p></li><li><p>The·event·handler·terminates·abnormally·and·<code·class="inline">gen_event</code>·logs·an·error.</p></li></ul><p>This·callback·is·used·to·limit·the·status·of·the·event·handler·returned·by | 1147 | to·get·the·<code·class="inline">gen_event</code>·status.</p></li><li><p>The·event·handler·terminates·abnormally·and·<code·class="inline">gen_event</code>·logs·an·error.</p></li></ul><p>This·callback·is·used·to·limit·the·status·of·the·event·handler·returned·by |
| 1148 | <a·href="sys.xhtml#get_status/1"><code·class="inline">sys:get_status/1,2</code></a>·or·sent·to·<a·href="../../../../lib/kernel/doc/html/logger.html"><code·class="inline">logger</code></a>.</p><p>The·callback·gets·a·map·<code·class="inline">Status</code>·describing·the·current·status | 1148 | <a·href="sys.xhtml#get_status/1"><code·class="inline">sys:get_status/1,2</code></a>·or·sent·to·<a·href="../../../../lib/kernel/doc/html/logger.html"><code·class="inline">logger</code></a>.</p><p>The·callback·gets·a·map·<code·class="inline">Status</code>·describing·the·current·status |
| 1149 | and·shall·return·a·map·<code·class="inline">NewStatus</code>·with·the·same·keys, | 1149 | and·shall·return·a·map·<code·class="inline">NewStatus</code>·with·the·same·keys, |
| 1150 | but·it·may·transform·some·values.</p><p>Two·possible·use·cases·for·this·callback·is·to·remove | 1150 | but·it·may·transform·some·values.</p><p>Two·possible·use·cases·for·this·callback·is·to·remove |
| 1151 | sensitive·information·from·the·state·to·prevent·it·from·being·printed | 1151 | sensitive·information·from·the·state·to·prevent·it·from·being·printed |
| 1152 | in·log·files,·or·to·compact·large·irrelevant·status·items | 1152 | in·log·files,·or·to·compact·large·irrelevant·status·items |
| 1153 | that·would·only·clutter·the·logs.</p><p><em>Example</em>:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nf">format_status</samp><samp·class="p"·data-group-id="7 | 1153 | that·would·only·clutter·the·logs.</p><p><em>Example</em>:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nf">format_status</samp><samp·class="p"·data-group-id="7840128663-1">(</samp><samp·class="n">Status</samp><samp·class="p"·data-group-id="7840128663-1">)</samp><samp·class="w">·</samp><samp·class="p">-></samp><samp·class="w"> |
| 1154 | ··</samp><samp·class="nc">maps</samp><samp·class="p">:</samp><samp·class="nf">map</samp><samp·class="p"·data-group-id="7 | 1154 | ··</samp><samp·class="nc">maps</samp><samp·class="p">:</samp><samp·class="nf">map</samp><samp·class="p"·data-group-id="7840128663-2">(</samp><samp·class="w"> |
| 1155 | ····</samp><samp·class="nf">fun</samp><samp·class="p"·data-group-id="7 | 1155 | ····</samp><samp·class="nf">fun</samp><samp·class="p"·data-group-id="7840128663-3">(</samp><samp·class="ss">state</samp><samp·class="p">,</samp><samp·class="n">State</samp><samp·class="p"·data-group-id="7840128663-3">)</samp><samp·class="w">·</samp><samp·class="p">-></samp><samp·class="w"> |
| 1156 | ············</samp><samp·class="nc">maps</samp><samp·class="p">:</samp><samp·class="nf">remove</samp><samp·class="p"·data-group-id="7 | 1156 | ············</samp><samp·class="nc">maps</samp><samp·class="p">:</samp><samp·class="nf">remove</samp><samp·class="p"·data-group-id="7840128663-4">(</samp><samp·class="ss">private_key</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">State</samp><samp·class="p"·data-group-id="7840128663-4">)</samp><samp·class="p">;</samp><samp·class="w"> |
| 1157 | ·······</samp><samp·class="p"·data-group-id="7 | 1157 | ·······</samp><samp·class="p"·data-group-id="7840128663-5">(</samp><samp·class="ss">message</samp><samp·class="p">,</samp><samp·class="p"·data-group-id="7840128663-6">{</samp><samp·class="ss">password</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="p">_</samp><samp·class="n">Pass</s[·...·truncated·by·diffoscope;·len:·98,·SHA:·bc1d7ab1c7db25d0ead2cbe51037bbf9ef459a7a7bd48debe6bae052365692f0·...·]-5">)</samp><samp·class="w">·</samp><samp·class="p">-></samp><samp·class="w"> |
| 1158 | ············</samp><samp·class="p"·data-group-id="7 | 1158 | ············</samp><samp·class="p"·data-group-id="7840128663-7">{</samp><samp·class="ss">password</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="ss">removed</samp><samp·class="p"·data-group-id="7840128663-7">}</samp><samp·class="p">;</samp><samp·class="w"> |
| 1159 | ·······</samp><samp·class="p"·data-group-id="7 | 1159 | ·······</samp><samp·class="p"·data-group-id="7840128663-8">(</samp><samp·class="p">_</samp><samp·class="p">,</samp><samp·class="n">Value</samp><samp·class="p"·data-group-id="7840128663-8">)</samp><samp·class="w">·</samp><samp·class="p">-></samp><samp·class="w"> |
| 1160 | ············</samp><samp·class="n">Value</samp><samp·class="w"> | 1160 | ············</samp><samp·class="n">Value</samp><samp·class="w"> |
| 1161 | ····</samp><samp·class="k">end</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Status</samp><samp·class="p"·data-group-id="7 | 1161 | ····</samp><samp·class="k">end</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Status</samp><samp·class="p"·data-group-id="7840128663-2">)</samp><samp·class="p">.</samp></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>This·callback·is·optional,·so·event·handler·modules·need·not·export·it. |
| 1162 | If·a·handler·does·not·export·this·function,·the·<code·class="inline">gen_event</code>·module | 1162 | If·a·handler·does·not·export·this·function,·the·<code·class="inline">gen_event</code>·module |
| 1163 | uses·the·handler·state·directly·for·the·purposes·described·below.</p><p>If·this·callback·is·exported·but·fails,·to·hide·possibly·sensitive·data, | 1163 | uses·the·handler·state·directly·for·the·purposes·described·below.</p><p>If·this·callback·is·exported·but·fails,·to·hide·possibly·sensitive·data, |
| 1164 | the·default·function·will·instead·return·the·fact·that | 1164 | the·default·function·will·instead·return·the·fact·that |
| 1165 | <a·href="#c:format_status/1"><code·class="inline">format_status/1</code></a>·has·crashed.</p></section> | 1165 | <a·href="#c:format_status/1"><code·class="inline">format_status/1</code></a>·has·crashed.</p></section> |
| 1166 | ··</section> | 1166 | ··</section> |
| 1167 | </section> | 1167 | </section> |
| 1168 | <section·class="detail"·id="c:format_status/2"> | 1168 | <section·class="detail"·id="c:format_status/2"> |
| Offset 865, 23 lines modified | Offset 865, 23 lines modified | ||
| 865 | ································Cwd·::·<a·href="#t:filename_all/0">filename_all</a>(), | 865 | ································Cwd·::·<a·href="#t:filename_all/0">filename_all</a>(), |
| 866 | ································SafeFilename·::·<a·href="#t:filename_all/0">filename_all</a>().</pre> | 866 | ································SafeFilename·::·<a·href="#t:filename_all/0">filename_all</a>().</pre> |
| 867 | ······</div> | 867 | ······</div> |
| 868 | <p>Sanitizes·the·relative·path·by·eliminating·".."·and·"."·components·to·protect | 868 | <p>Sanitizes·the·relative·path·by·eliminating·".."·and·"."·components·to·protect |
| 869 | against·directory·traversal·attacks.</p><p>Either·returns·the·sanitized·path·name,·or·the·atom·<code·class="inline">unsafe</code>·if·the·path·is·unsafe. | 869 | against·directory·traversal·attacks.</p><p>Either·returns·the·sanitized·path·name,·or·the·atom·<code·class="inline">unsafe</code>·if·the·path·is·unsafe. |
| 870 | The·path·is·considered·unsafe·in·the·following·circumstances:</p><ul><li>The·path·is·not·relative.</li><li>A·".."·component·would·climb·up·above·the·root·of·the·relative·path.</li><li>A·symbolic·link·in·the·path·points·above·the·root·of·the·relative·path.</li></ul><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><samp·class="gp·unselectable">1>·</samp><samp·class="p"·data-group-id=" | 870 | The·path·is·considered·unsafe·in·the·following·circumstances:</p><ul><li>The·path·is·not·relative.</li><li>A·".."·component·would·climb·up·above·the·root·of·the·relative·path.</li><li>A·symbolic·link·in·the·path·points·above·the·root·of·the·relative·path.</li></ul><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><samp·class="gp·unselectable">1>·</samp><samp·class="p"·data-group-id="9058579584-1">{</samp><samp·class="ss">ok</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Cwd</samp><samp·class="p"·data-group-id="9058579584-1">}</samp><samp·class="w">·</samp><samp·class="o">=</samp><samp·class="w">·</samp><samp·cla[·...·truncated·by·diffoscope;·len:·168,·SHA:·c97bd2a0b6b21da4327bc0d30442b71cc11aacdb4eda41ebd3b3a1f70f54f7ca·...·]-2">)</samp><samp·class="p">.</samp><samp·class="w"> |
| 871 | </samp><samp·class="p">.</samp><samp·class="p">.</samp><samp·class="p">.</samp><samp·class="gp·unselectable"> | 871 | </samp><samp·class="p">.</samp><samp·class="p">.</samp><samp·class="p">.</samp><samp·class="gp·unselectable"> |
| 872 | 2>·</samp><samp·class="nc">filelib</samp><samp·class="p">:</samp><samp·class="nf">safe_relative_path</samp><samp·class="p"·data-group-id=" | 872 | 2>·</samp><samp·class="nc">filelib</samp><samp·class="p">:</samp><samp·class="nf">safe_relative_path</samp><samp·class="p"·data-group-id="9058579584-3">(</samp><samp·class="s">"dir/sub_dir/.."</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Cwd</samp><samp·class="p"·data-group-id="9058579584-3">)</samp><samp·class="p">.</samp><samp·class="w"> |
| 873 | </samp><samp·class="s">"dir"</samp><samp·class="gp·unselectable"> | 873 | </samp><samp·class="s">"dir"</samp><samp·class="gp·unselectable"> |
| 874 | 3>·</samp><samp·class="nc">filelib</samp><samp·class="p">:</samp><samp·class="nf">safe_relative_path</samp><samp·class="p"·data-group-id=" | 874 | 3>·</samp><samp·class="nc">filelib</samp><samp·class="p">:</samp><samp·class="nf">safe_relative_path</samp><samp·class="p"·data-group-id="9058579584-4">(</samp><samp·class="s">"dir/.."</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Cwd</samp><samp·class="p"·data-group-id="9058579584-4">)</samp><samp·class="p">.</samp><samp·class="w"> |
| 875 | </samp><samp·class="p"·data-group-id=" | 875 | </samp><samp·class="p"·data-group-id="9058579584-5">[</samp><samp·class="p"·data-group-id="9058579584-5">]</samp><samp·class="gp·unselectable"> |
| 876 | 4>·</samp><samp·class="nc">filelib</samp><samp·class="p">:</samp><samp·class="nf">safe_relative_path</samp><samp·class="p"·data-group-id=" | 876 | 4>·</samp><samp·class="nc">filelib</samp><samp·class="p">:</samp><samp·class="nf">safe_relative_path</samp><samp·class="p"·data-group-id="9058579584-6">(</samp><samp·class="s">"dir/../.."</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Cwd</samp><samp·class="p"·data-group-id="9058579584-6">)</samp><samp·class="p">.</samp><samp·class="w"> |
| 877 | </samp><samp·class="ss">unsafe</samp><samp·class="gp·unselectable"> | 877 | </samp><samp·class="ss">unsafe</samp><samp·class="gp·unselectable"> |
| 878 | 5>·</samp><samp·class="nc">filelib</samp><samp·class="p">:</samp><samp·class="nf">safe_relative_path</samp><samp·class="p"·data-group-id=" | 878 | 5>·</samp><samp·class="nc">filelib</samp><samp·class="p">:</samp><samp·class="nf">safe_relative_path</samp><samp·class="p"·data-group-id="9058579584-7">(</samp><samp·class="s">"/abs/path"</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Cwd</samp><samp·class="p"·data-group-id="9058579584-7">)</samp><samp·class="p">.</samp><samp·class="w"> |
| 879 | </samp><samp·class="ss">unsafe</samp></code></pre> | 879 | </samp><samp·class="ss">unsafe</samp></code></pre> |
| 880 | ··</section> | 880 | ··</section> |
| 881 | </section> | 881 | </section> |
| 882 | <section·class="detail"·id="wildcard/1"> | 882 | <section·class="detail"·id="wildcard/1"> |
| 883 | ··<div·class="detail-header"> | 883 | ··<div·class="detail-header"> |
| 884 | ····<a·href="#wildcard/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 884 | ····<a·href="#wildcard/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 27, 15 lines modified | Offset 27, 15 lines modified | ||
| 27 | tokens.</p><h2·id="module-error-information"·class="section-heading"> | 27 | tokens.</p><h2·id="module-error-information"·class="section-heading"> |
| 28 | ··<a·href="#module-error-information"·class="hover-link"> | 28 | ··<a·href="#module-error-information"·class="hover-link"> |
| 29 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 29 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 30 | ··</a> | 30 | ··</a> |
| 31 | ··<span·class="text">Error·Information</span> | 31 | ··<span·class="text">Error·Information</span> |
| 32 | </h2> | 32 | </h2> |
| 33 | <p><code·class="inline">ErrorInfo</code>·is·the·standard·<code·class="inline">ErrorInfo</code>·structure·that·is·returned·from·all·I/O | 33 | <p><code·class="inline">ErrorInfo</code>·is·the·standard·<code·class="inline">ErrorInfo</code>·structure·that·is·returned·from·all·I/O |
| 34 | modules.·The·format·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id=" | 34 | modules.·The·format·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id="3343623689-1">{</samp><samp·class="n">ErrorLocation</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Module</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">ErrorDescriptor</samp><samp·class="p"·data-group-id="3343[·...·truncated·by·diffoscope;·len:·373,·SHA:·b2ce47316948cd6336c2aae08774cbb844109ab52c9c400ede4ae76c03138018·...·]-1">)</samp></code></pre><h2·id="module-notes"·class="section-heading"> |
| 35 | ··<a·href="#module-notes"·class="hover-link"> | 35 | ··<a·href="#module-notes"·class="hover-link"> |
| 36 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 36 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 37 | ··</a> | 37 | ··</a> |
| 38 | ··<span·class="text">Notes</span> | 38 | ··<span·class="text">Notes</span> |
| 39 | </h2> | 39 | </h2> |
| 40 | <p>The·continuation·of·the·first·call·to·the·re-entrant·input·functions·must·be | 40 | <p>The·continuation·of·the·first·call·to·the·re-entrant·input·functions·must·be |
| 41 | <code·class="inline">[]</code>.·For·a·complete·description·of·how·the·re-entrant·input·scheme·works,·see | 41 | <code·class="inline">[]</code>.·For·a·complete·description·of·how·the·re-entrant·input·scheme·works,·see |
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| 29 | (see·the·<a·href="erl_scan.xhtml"><code·class="inline">erl_scan</code></a>)·module.</p><h2·id="module-error-information"·class="section-heading"> | 29 | (see·the·<a·href="erl_scan.xhtml"><code·class="inline">erl_scan</code></a>)·module.</p><h2·id="module-error-information"·class="section-heading"> |
| 30 | ··<a·href="#module-error-information"·class="hover-link"> | 30 | ··<a·href="#module-error-information"·class="hover-link"> |
| 31 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 31 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 32 | ··</a> | 32 | ··</a> |
| 33 | ··<span·class="text">Error·Information</span> | 33 | ··<span·class="text">Error·Information</span> |
| 34 | </h2> | 34 | </h2> |
| 35 | <p>ErrorInfo·is·the·standard·ErrorInfo·structure·that·is·returned·from·all·I/O·modules. | 35 | <p>ErrorInfo·is·the·standard·ErrorInfo·structure·that·is·returned·from·all·I/O·modules. |
| 36 | The·format·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id=" | 36 | The·format·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id="0447984409-1">{</samp><samp·class="n">ErrorLine</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Module</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">ErrorDescriptor</samp><samp·class="p"·data-group-id="04479844[·...·truncated·by·diffoscope;·len:·369,·SHA:·4729ae9d97c077e481fcb527072ce16bb41605a252a71fffea2679f2fcc3c11b·...·]-1">)</samp></code></pre><h2·id="module-see-also"·class="section-heading"> |
| 37 | ··<a·href="#module-see-also"·class="hover-link"> | 37 | ··<a·href="#module-see-also"·class="hover-link"> |
| 38 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 38 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 39 | ··</a> | 39 | ··</a> |
| 40 | ··<span·class="text">See·Also</span> | 40 | ··<span·class="text">See·Also</span> |
| 41 | </h2> | 41 | </h2> |
| 42 | <p><a·href="erl_anno.xhtml"><code·class="inline">erl_anno</code></a>,·<a·href="erl_scan.xhtml"><code·class="inline">erl_scan</code></a>,·<a·href="io.xhtml"><code·class="inline">io</code></a>,·section·<a·href="../../../../lib/../erts/doc/html/absform.xhtml">The·Abstract·Format</a> | 42 | <p><a·href="erl_anno.xhtml"><code·class="inline">erl_anno</code></a>,·<a·href="erl_scan.xhtml"><code·class="inline">erl_scan</code></a>,·<a·href="io.xhtml"><code·class="inline">io</code></a>,·section·<a·href="../../../../lib/../erts/doc/html/absform.xhtml">The·Abstract·Format</a> |
| 43 | in·the·ERTS·User's·Guide.</p> | 43 | in·the·ERTS·User's·Guide.</p> |
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| 30 | your·own·Erlang·compiler.</p><h2·id="module-error-information"·class="section-heading"> | 30 | your·own·Erlang·compiler.</p><h2·id="module-error-information"·class="section-heading"> |
| 31 | ··<a·href="#module-error-information"·class="hover-link"> | 31 | ··<a·href="#module-error-information"·class="hover-link"> |
| 32 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 32 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 33 | ··</a> | 33 | ··</a> |
| 34 | ··<span·class="text">Error·Information</span> | 34 | ··<span·class="text">Error·Information</span> |
| 35 | </h2> | 35 | </h2> |
| 36 | <p><code·class="inline">ErrorInfo</code>·is·the·standard·<code·class="inline">ErrorInfo</code>·structure·that·is·returned·from·all·I/O | 36 | <p><code·class="inline">ErrorInfo</code>·is·the·standard·<code·class="inline">ErrorInfo</code>·structure·that·is·returned·from·all·I/O |
| 37 | modules.·The·format·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id=" | 37 | modules.·The·format·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id="1017291945-1">{</samp><samp·class="n">ErrorLine</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Module</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">ErrorDescriptor</samp><samp·class="p"·data-group-id="10172919[·...·truncated·by·diffoscope;·len:·369,·SHA:·1e1ee3afc018f8202c1041b8712faff912dc8757fd8c4e23a7ea1b86eda46067·...·]-1">)</samp></code></pre><h2·id="module-see-also"·class="section-heading"> |
| 38 | ··<a·href="#module-see-also"·class="hover-link"> | 38 | ··<a·href="#module-see-also"·class="hover-link"> |
| 39 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 39 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 40 | ··</a> | 40 | ··</a> |
| 41 | ··<span·class="text">See·Also</span> | 41 | ··<span·class="text">See·Also</span> |
| 42 | </h2> | 42 | </h2> |
| 43 | <p><a·href="epp.xhtml"><code·class="inline">epp</code></a>,·<a·href="erl_parse.xhtml"><code·class="inline">erl_parse</code></a></p> | 43 | <p><a·href="epp.xhtml"><code·class="inline">epp</code></a>,·<a·href="erl_parse.xhtml"><code·class="inline">erl_parse</code></a></p> |
| 44 | ······</section> | 44 | ······</section> |
| Offset 32, 35 lines modified | Offset 32, 35 lines modified | ||
| 32 | ··<span·class="text">Local·Function·Handler</span> | 32 | ··<span·class="text">Local·Function·Handler</span> |
| 33 | </h2> | 33 | </h2> |
| 34 | <p>During·evaluation·of·a·function,·no·calls·can·be·made·to·local·functions.·An | 34 | <p>During·evaluation·of·a·function,·no·calls·can·be·made·to·local·functions.·An |
| 35 | undefined·function·error·would·be·generated.·However,·the·optional·argument | 35 | undefined·function·error·would·be·generated.·However,·the·optional·argument |
| 36 | <code·class="inline">LocalFunctionHandler</code>·can·be·used·to·define·a·function·that·is·called·when | 36 | <code·class="inline">LocalFunctionHandler</code>·can·be·used·to·define·a·function·that·is·called·when |
| 37 | there·is·a·call·to·a·local·function.·The·argument·can·have·the·following | 37 | there·is·a·call·to·a·local·function.·The·argument·can·have·the·following |
| 38 | formats:</p><ul><li><p><strong><code·class="inline">{value,Func}</code></strong>·-·This·defines·a·local·function·handler·that·is·called | 38 | formats:</p><ul><li><p><strong><code·class="inline">{value,Func}</code></strong>·-·This·defines·a·local·function·handler·that·is·called |
| 39 | with:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="n">Func</samp><samp·class="p"·data-group-id="3 | 39 | with:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="n">Func</samp><samp·class="p"·data-group-id="3417015930-1">(</samp><samp·class="n">Name</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Arguments</samp><samp·class="p"·data-group-id="3417015930-1">)</samp></code></pre><p><code·class="inline">Name</code>·is·the·name·of·the·local·function·(an·atom)·and·<code·class="inline">Arguments</code>·is·a·list |
| 40 | of·the·<em>evaluated</em>·arguments.·The·function·handler·returns·the·value·of·the | 40 | of·the·<em>evaluated</em>·arguments.·The·function·handler·returns·the·value·of·the |
| 41 | local·function.·In·this·case,·the·current·bindings·cannot·be·accessed.·To | 41 | local·function.·In·this·case,·the·current·bindings·cannot·be·accessed.·To |
| 42 | signal·an·error,·the·function·handler·calls·<a·href="../../../../lib/../erts/doc/html/erlang.html#exit/1"><code·class="inline">exit/1</code></a>·with·a | 42 | signal·an·error,·the·function·handler·calls·<a·href="../../../../lib/../erts/doc/html/erlang.html#exit/1"><code·class="inline">exit/1</code></a>·with·a |
| 43 | suitable·exit·value.</p></li><li><p><strong><code·class="inline">{eval,Func}</code></strong>·-·This·defines·a·local·function·handler·that·is·called·with:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="n">Func</samp><samp·class="p"·data-group-id="8 | 43 | suitable·exit·value.</p></li><li><p><strong><code·class="inline">{eval,Func}</code></strong>·-·This·defines·a·local·function·handler·that·is·called·with:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="n">Func</samp><samp·class="p"·data-group-id="8704560807-1">(</samp><samp·class="n">Name</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Arguments</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Bindings</samp><samp·class="p"·data-group-id="8704560807-1">)</samp></code></pre><p><code·class="inline">Name</code>·is·the·name·of·the·local·function·(an·atom),·<code·class="inline">Arguments</code>·is·a·list·of |
| 44 | the·<em>unevaluated</em>·arguments,·and·<code·class="inline">Bindings</code>·are·the·current·variable·bindings. | 44 | the·<em>unevaluated</em>·arguments,·and·<code·class="inline">Bindings</code>·are·the·current·variable·bindings. |
| 45 | The·function·handler·returns:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id="15 | 45 | The·function·handler·returns:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id="3145682008-1">{</samp><samp·class="ss">value</samp><samp·class="p">,</samp><samp·class="n">Value</samp><samp·class="p">,</samp><samp·class="n">NewBindings</samp><samp·class="p"·data-group-id="3145682008-1">}</samp></code></pre><p><code·class="inline">Value</code>·is·the·value·of·the·local·function·and·<code·class="inline">NewBindings</code>·are·the·updated |
| 46 | variable·bindings.·In·this·case,·the·function·handler·must·itself·evaluate·all | 46 | variable·bindings.·In·this·case,·the·function·handler·must·itself·evaluate·all |
| 47 | the·function·arguments·and·manage·the·bindings.·To·signal·an·error,·the | 47 | the·function·arguments·and·manage·the·bindings.·To·signal·an·error,·the |
| 48 | function·handler·calls·<a·href="../../../../lib/../erts/doc/html/erlang.html#exit/1"><code·class="inline">exit/1</code></a>·with·a·suitable·exit·value.</p></li><li><p><strong><code·class="inline">none</code></strong>·-·There·is·no·local·function·handler.</p></li></ul><h2·id="module-non-local-function-handler"·class="section-heading"> | 48 | function·handler·calls·<a·href="../../../../lib/../erts/doc/html/erlang.html#exit/1"><code·class="inline">exit/1</code></a>·with·a·suitable·exit·value.</p></li><li><p><strong><code·class="inline">none</code></strong>·-·There·is·no·local·function·handler.</p></li></ul><h2·id="module-non-local-function-handler"·class="section-heading"> |
| 49 | ··<a·href="#module-non-local-function-handler"·class="hover-link"> | 49 | ··<a·href="#module-non-local-function-handler"·class="hover-link"> |
| 50 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 50 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 51 | ··</a> | 51 | ··</a> |
| 52 | ··<span·class="text">Non-Local·Function·Handler</span> | 52 | ··<span·class="text">Non-Local·Function·Handler</span> |
| 53 | </h2> | 53 | </h2> |
| 54 | <p>The·optional·argument·<code·class="inline">NonLocalFunctionHandler</code>·can·be·used·to·define·a·function | 54 | <p>The·optional·argument·<code·class="inline">NonLocalFunctionHandler</code>·can·be·used·to·define·a·function |
| 55 | that·is·called·in·the·following·cases:</p><ul><li>A·functional·object·(fun)·is·called.</li><li>A·built-in·function·is·called.</li><li>A·function·is·called·using·the·<code·class="inline">M:F</code>·syntax,·where·<code·class="inline">M</code>·and·<code·class="inline">F</code>·are·atoms·or | 55 | that·is·called·in·the·following·cases:</p><ul><li>A·functional·object·(fun)·is·called.</li><li>A·built-in·function·is·called.</li><li>A·function·is·called·using·the·<code·class="inline">M:F</code>·syntax,·where·<code·class="inline">M</code>·and·<code·class="inline">F</code>·are·atoms·or |
| 56 | expressions.</li><li>An·operator·<code·class="inline">Op/A</code>·is·called·(this·is·handled·as·a·call·to·function | 56 | expressions.</li><li>An·operator·<code·class="inline">Op/A</code>·is·called·(this·is·handled·as·a·call·to·function |
| 57 | <code·class="inline">erlang:Op/A</code>).</li></ul><p>Exceptions·are·calls·to·<code·class="inline">erlang:apply/2,3</code>;·neither·of·the·function·handlers·are | 57 | <code·class="inline">erlang:Op/A</code>).</li></ul><p>Exceptions·are·calls·to·<code·class="inline">erlang:apply/2,3</code>;·neither·of·the·function·handlers·are |
| 58 | called·for·such·calls.·The·argument·can·have·the·following·formats:</p><ul><li><p><strong><code·class="inline">{value,Func}</code></strong>·-·This·defines·a·non-local·function·handler.·The·function | 58 | called·for·such·calls.·The·argument·can·have·the·following·formats:</p><ul><li><p><strong><code·class="inline">{value,Func}</code></strong>·-·This·defines·a·non-local·function·handler.·The·function |
| 59 | may·be·called·with·two·arguments:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="n">Func</samp><samp·class="p"·data-group-id=" | 59 | may·be·called·with·two·arguments:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="n">Func</samp><samp·class="p"·data-group-id="0954988437-1">(</samp><samp·class="n">FuncSpec</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Arguments</samp><samp·class="p"·data-group-id="0954988437-1">)</samp></code></pre><p>or·three·arguments:</p><pre><code·class="makeup·erlang[·...·truncated·by·diffoscope;·len:·324,·SHA:·f9eac7e36d37124627e02806c73f9762f837660b2a8787014973877cfbe2d5c1·...·]-1">)</samp></code></pre><p><code·class="inline">Anno</code>·is·the·<a·href="erl_anno.xhtml#t:anno/0"><code·class="inline">erl_anno:anno()</code></a>·of·the·node,·<code·class="inline">FuncSpec</code> |
| 60 | is·the·name·of·the·function·on·the·form·<code·class="inline">{Module,Function}</code>·or·a·fun,·and | 60 | is·the·name·of·the·function·on·the·form·<code·class="inline">{Module,Function}</code>·or·a·fun,·and |
| 61 | <code·class="inline">Arguments</code>·is·a·list·of·the·<em>evaluated</em>·arguments.·The·function·handler | 61 | <code·class="inline">Arguments</code>·is·a·list·of·the·<em>evaluated</em>·arguments.·The·function·handler |
| 62 | returns·the·value·of·the·function.·To·signal·an·error,·the·function·handler | 62 | returns·the·value·of·the·function.·To·signal·an·error,·the·function·handler |
| 63 | calls·<a·href="../../../../lib/../erts/doc/html/erlang.html#exit/1"><code·class="inline">exit/1</code></a>·with·a·suitable·exit·value.</p></li><li><p><strong><code·class="inline">none</code></strong>·-·There·is·no·non-local·function·handler.</p></li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>For·calls·such·as·<code·class="inline">erlang:apply(Fun,·Args)</code>·or | 63 | calls·<a·href="../../../../lib/../erts/doc/html/erlang.html#exit/1"><code·class="inline">exit/1</code></a>·with·a·suitable·exit·value.</p></li><li><p><strong><code·class="inline">none</code></strong>·-·There·is·no·non-local·function·handler.</p></li></ul><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>For·calls·such·as·<code·class="inline">erlang:apply(Fun,·Args)</code>·or |
| 64 | <code·class="inline">erlang:apply(Module,·Function,·Args)</code>,·the·call·of·the·non-local·function | 64 | <code·class="inline">erlang:apply(Module,·Function,·Args)</code>,·the·call·of·the·non-local·function |
| 65 | handler·corresponding·to·the·call·to·<code·class="inline">erlang:apply/2,3</code>·itself | 65 | handler·corresponding·to·the·call·to·<code·class="inline">erlang:apply/2,3</code>·itself |
| 66 | (<code·class="inline">Func({erlang,·apply},·[Fun,·Args])</code>·or | 66 | (<code·class="inline">Func({erlang,·apply},·[Fun,·Args])</code>·or |
| Offset 31, 15 lines modified | Offset 31, 15 lines modified | ||
| 31 | <code·class="inline">Latin-1</code>·and·<code·class="inline">UTF-8</code>,·where·the·case·of·the·characters·can·be·chosen·freely.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><samp·class="c1">%%·coding:·utf-8</samp></code></pre><pre><code·class="makeup·erlang"·translate="no"><samp·class="c1">%%·For·this·file·we·have·chosen·encoding·=·Latin-1</samp></code></pre><pre><code·class="makeup·erlang"·translate="no"><samp·class="c1">%%·-*-·coding:·latin-1·-*-</samp></code></pre><h2·id="module-error-information"·class="section-heading"> | 31 | <code·class="inline">Latin-1</code>·and·<code·class="inline">UTF-8</code>,·where·the·case·of·the·characters·can·be·chosen·freely.</p><p><em>Examples:</em></p><pre><code·class="makeup·erlang"·translate="no"><samp·class="c1">%%·coding:·utf-8</samp></code></pre><pre><code·class="makeup·erlang"·translate="no"><samp·class="c1">%%·For·this·file·we·have·chosen·encoding·=·Latin-1</samp></code></pre><pre><code·class="makeup·erlang"·translate="no"><samp·class="c1">%%·-*-·coding:·latin-1·-*-</samp></code></pre><h2·id="module-error-information"·class="section-heading"> |
| 32 | ··<a·href="#module-error-information"·class="hover-link"> | 32 | ··<a·href="#module-error-information"·class="hover-link"> |
| 33 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 33 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 34 | ··</a> | 34 | ··</a> |
| 35 | ··<span·class="text">Error·Information</span> | 35 | ··<span·class="text">Error·Information</span> |
| 36 | </h2> | 36 | </h2> |
| 37 | <p><code·class="inline">ErrorInfo</code>·is·the·standard·<code·class="inline">ErrorInfo</code>·structure·that·is·returned·from·all·I/O | 37 | <p><code·class="inline">ErrorInfo</code>·is·the·standard·<code·class="inline">ErrorInfo</code>·structure·that·is·returned·from·all·I/O |
| 38 | modules.·The·format·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id=" | 38 | modules.·The·format·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id="9125521397-1">{</samp><samp·class="n">ErrorLine</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Module</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">ErrorDescriptor</samp><samp·class="p"·data-group-id="91255213[·...·truncated·by·diffoscope;·len:·369,·SHA:·2c64d80c24f051564e7e4345f619792f5658ea28a815ed1e3b91c158fcf2f53f·...·]-1">)</samp></code></pre><h2·id="module-see-also"·class="section-heading"> |
| 39 | ··<a·href="#module-see-also"·class="hover-link"> | 39 | ··<a·href="#module-see-also"·class="hover-link"> |
| 40 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 40 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 41 | ··</a> | 41 | ··</a> |
| 42 | ··<span·class="text">See·Also</span> | 42 | ··<span·class="text">See·Also</span> |
| 43 | </h2> | 43 | </h2> |
| 44 | <p><a·href="erl_parse.xhtml"><code·class="inline">erl_parse</code></a></p> | 44 | <p><a·href="erl_parse.xhtml"><code·class="inline">erl_parse</code></a></p> |
| 45 | ······</section> | 45 | ······</section> |
| Offset 1561, 15 lines modified | Offset 1561, 15 lines modified | ||
| 1561 | ················Options·::·[Option]·|·Option, | 1561 | ················Options·::·[Option]·|·Option, |
| 1562 | ················Option·::·<a·href="../../../../lib/compiler/doc/html/compile.html#t:option/0">compile:option</a>(), | 1562 | ················Option·::·<a·href="../../../../lib/compiler/doc/html/compile.html#t:option/0">compile:option</a>(), |
| 1563 | ················Module·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:module/0">module</a>().</pre> | 1563 | ················Module·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:module/0">module</a>().</pre> |
| 1564 | ······</div> | 1564 | ······</div> |
| 1565 | <p>Compiles·and·then·loads·the·code·for·a·file·on·all·nodes.·<code·class="inline">Options</code>·defaults·to | 1565 | <p>Compiles·and·then·loads·the·code·for·a·file·on·all·nodes.·<code·class="inline">Options</code>·defaults·to |
| 1566 | <code·class="inline">[]</code>.·Compilation·is·equivalent·to:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nc">compile</samp><samp·class="p">:</samp><samp·class="nf">file</samp><samp·class="p"·data-group-id=" | 1566 | <code·class="inline">[]</code>.·Compilation·is·equivalent·to:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nc">compile</samp><samp·class="p">:</samp><samp·class="nf">file</samp><samp·class="p"·data-group-id="4203838260-1">(</samp><samp·class="n">File</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">Options</samp><samp·class="w">·</samp><samp·class="o">++</samp><samp·class="w">·</samp><samp·class="p"·data-group-id="4203838260-2">[</samp><sa[·...·truncated·by·diffoscope;·len:·215,·SHA:·50341f1d0711803a38fb1396a090bd1360940255147094c8bd1d302a0969c4eb·...·]-1">)</samp></code></pre> |
| 1567 | ··</section> | 1567 | ··</section> |
| 1568 | </section> | 1568 | </section> |
| 1569 | <section·class="detail"·id="ni/0"> | 1569 | <section·class="detail"·id="ni/0"> |
| 1570 | ··<div·class="detail-header"> | 1570 | ··<div·class="detail-header"> |
| 1571 | ····<a·href="#ni/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1571 | ····<a·href="#ni/0"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1572 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1572 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 23, 15 lines modified | Offset 23, 15 lines modified | ||
| 23 | <p>Assert·macros.</p><h2·id="description"·class="section-heading"> | 23 | <p>Assert·macros.</p><h2·id="description"·class="section-heading"> |
| 24 | ··<a·href="#description"·class="hover-link"> | 24 | ··<a·href="#description"·class="hover-link"> |
| 25 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 25 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 26 | ··</a> | 26 | ··</a> |
| 27 | ··<span·class="text">Description</span> | 27 | ··<span·class="text">Description</span> |
| 28 | </h2> | 28 | </h2> |
| 29 | <p>The·include·file·<code·class="inline">assert.hrl</code>·provides·macros·for·inserting·assertions·in·your | 29 | <p>The·include·file·<code·class="inline">assert.hrl</code>·provides·macros·for·inserting·assertions·in·your |
| 30 | program·code.</p><p>Include·the·following·directive·in·the·module·from·which·the·function·is·called:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="86 | 30 | program·code.</p><p>Include·the·following·directive·in·the·module·from·which·the·function·is·called:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="8632466349-1">(</span><span·class="s">"stdlib/include/assert.hrl"</span><span·class="p"·data-group-id="8632466349-1">)</span><span·class="p">.</span></code></pre><p>When·an·assertion·succeeds,·the·assert·macro·yields·the·atom·<code·class="inline">ok</code>.·When·an |
| 31 | assertion·fails,·an·exception·of·type·<code·class="inline">error</code>·is·generated.·The·associated·error | 31 | assertion·fails,·an·exception·of·type·<code·class="inline">error</code>·is·generated.·The·associated·error |
| 32 | term·has·the·form·<code·class="inline">{Macro,·Info}</code>.·<code·class="inline">Macro</code>·is·the·macro·name,·for·example, | 32 | term·has·the·form·<code·class="inline">{Macro,·Info}</code>.·<code·class="inline">Macro</code>·is·the·macro·name,·for·example, |
| 33 | <code·class="inline">assertEqual</code>.·<code·class="inline">Info</code>·is·a·list·of·tagged·values,·such·as | 33 | <code·class="inline">assertEqual</code>.·<code·class="inline">Info</code>·is·a·list·of·tagged·values,·such·as |
| 34 | <code·class="inline">[{module,·M},·{line,·L},·...]</code>,·which·gives·more·information·about·the·location | 34 | <code·class="inline">[{module,·M},·{line,·L},·...]</code>,·which·gives·more·information·about·the·location |
| 35 | and·cause·of·the·exception.·All·entries·in·the·<code·class="inline">Info</code>·list·are·optional;·do·not | 35 | and·cause·of·the·exception.·All·entries·in·the·<code·class="inline">Info</code>·list·are·optional;·do·not |
| 36 | rely·programmatically·on·any·of·them·being·present.</p><p>Each·assert·macro·has·a·corresponding·version·with·an·extra·argument,·for·adding | 36 | rely·programmatically·on·any·of·them·being·present.</p><p>Each·assert·macro·has·a·corresponding·version·with·an·extra·argument,·for·adding |
| 37 | comments·to·assertions.·These·can·for·example·be·printed·as·part·of·error | 37 | comments·to·assertions.·These·can·for·example·be·printed·as·part·of·error |
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| 51 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 51 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 52 | ··</a> | 52 | ··</a> |
| 53 | ··<span·class="text">Macros</span> | 53 | ··<span·class="text">Macros</span> |
| 54 | </h2> | 54 | </h2> |
| 55 | <ul><li><p><strong><code·class="inline">assert(BoolExpr)</code></strong></p></li><li><p><strong><code·class="inline">assert(BoolExpr,·Comment)</code></strong>·-·Tests·that·<code·class="inline">BoolExpr</code>·completes·normally | 55 | <ul><li><p><strong><code·class="inline">assert(BoolExpr)</code></strong></p></li><li><p><strong><code·class="inline">assert(BoolExpr,·Comment)</code></strong>·-·Tests·that·<code·class="inline">BoolExpr</code>·completes·normally |
| 56 | returning·<code·class="inline">true</code>.</p></li><li><p><strong><code·class="inline">assertNot(BoolExpr)</code></strong></p></li><li><p><strong><code·class="inline">assertNot(BoolExpr,·Comment)</code></strong>·-·Tests·that·<code·class="inline">BoolExpr</code>·completes·normally | 56 | returning·<code·class="inline">true</code>.</p></li><li><p><strong><code·class="inline">assertNot(BoolExpr)</code></strong></p></li><li><p><strong><code·class="inline">assertNot(BoolExpr,·Comment)</code></strong>·-·Tests·that·<code·class="inline">BoolExpr</code>·completes·normally |
| 57 | returning·<code·class="inline">false</code>.</p></li><li><p><strong><code·class="inline">assertMatch(GuardedPattern,·Expr)</code></strong></p></li><li><p><strong><code·class="inline">assertMatch(GuardedPattern,·Expr,·Comment)</code></strong>·-·Tests·that·<code·class="inline">Expr</code>·completes | 57 | returning·<code·class="inline">false</code>.</p></li><li><p><strong><code·class="inline">assertMatch(GuardedPattern,·Expr)</code></strong></p></li><li><p><strong><code·class="inline">assertMatch(GuardedPattern,·Expr,·Comment)</code></strong>·-·Tests·that·<code·class="inline">Expr</code>·completes |
| 58 | normally·yielding·a·value·that·matches·<code·class="inline">GuardedPattern</code>,·for·example:</p><pre><code·class="text">?assertMatch({bork,·_},·f())</code></pre><p>Notice·that·a·guard·<code·class="inline">when·...</code>·can·be·included:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">?</span><span·class="nf">assertMatch</span><span·class="p"·data-group-id=" | 58 | normally·yielding·a·value·that·matches·<code·class="inline">GuardedPattern</code>,·for·example:</p><pre><code·class="text">?assertMatch({bork,·_},·f())</code></pre><p>Notice·that·a·guard·<code·class="inline">when·...</code>·can·be·included:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">?</span><span·class="nf">assertMatch</span><span·class="p"·data-group-id="5762312413-1">(</span><span·class="p"·data-group-id="5762312413-2">{</span><span·class="ss">bork</span><span·class="p">,</span><span·class="w">·</span><span·class="n">X</span><span·class="p"·data-group-id="5762312413-2">}</span><span·class="w">·</span><spa[·...·truncated·by·diffoscope;·len:·391,·SHA:·4cf179ef69e8b3b60f35d6db62008899fc4659c9d9fcaa8f9036bd76d680861f·...·]-1">)</span></code></pre></li><li><p><strong><code·class="inline">assertNotMatch(GuardedPattern,·Expr)</code></strong></p></li><li><p><strong><code·class="inline">assertNotMatch(GuardedPattern,·Expr,·Comment)</code></strong>·-·Tests·that·<code·class="inline">Expr</code> |
| 59 | completes·normally·yielding·a·value·that·does·not·match·<code·class="inline">GuardedPattern</code>.</p><p>As·in·<code·class="inline">assertMatch</code>,·<code·class="inline">GuardedPattern</code>·can·have·a·<code·class="inline">when</code>·part.</p></li><li><p><strong><code·class="inline">assertEqual(ExpectedValue,·Expr)</code></strong></p></li><li><p><strong><code·class="inline">assertEqual(ExpectedValue,·Expr,·Comment)</code></strong>·-·Tests·that·<code·class="inline">Expr</code>·completes | 59 | completes·normally·yielding·a·value·that·does·not·match·<code·class="inline">GuardedPattern</code>.</p><p>As·in·<code·class="inline">assertMatch</code>,·<code·class="inline">GuardedPattern</code>·can·have·a·<code·class="inline">when</code>·part.</p></li><li><p><strong><code·class="inline">assertEqual(ExpectedValue,·Expr)</code></strong></p></li><li><p><strong><code·class="inline">assertEqual(ExpectedValue,·Expr,·Comment)</code></strong>·-·Tests·that·<code·class="inline">Expr</code>·completes |
| 60 | normally·yielding·a·value·that·is·exactly·equal·to·<code·class="inline">ExpectedValue</code>.</p></li><li><p><strong><code·class="inline">assertNotEqual(ExpectedValue,·Expr)</code></strong></p></li><li><p><strong><code·class="inline">assertNotEqual(ExpectedValue,·Expr,·Comment)</code></strong>·-·Tests·that·<code·class="inline">Expr</code> | 60 | normally·yielding·a·value·that·is·exactly·equal·to·<code·class="inline">ExpectedValue</code>.</p></li><li><p><strong><code·class="inline">assertNotEqual(ExpectedValue,·Expr)</code></strong></p></li><li><p><strong><code·class="inline">assertNotEqual(ExpectedValue,·Expr,·Comment)</code></strong>·-·Tests·that·<code·class="inline">Expr</code> |
| 61 | completes·normally·yielding·a·value·that·is·not·exactly·equal·to | 61 | completes·normally·yielding·a·value·that·is·not·exactly·equal·to |
| 62 | <code·class="inline">ExpectedValue</code>.</p></li><li><p><strong><code·class="inline">assertException(Class,·Term,·Expr)</code></strong></p></li><li><p><strong><code·class="inline">assertException(Class,·Term,·Expr,·Comment)</code></strong>·-·Tests·that·<code·class="inline">Expr</code> | 62 | <code·class="inline">ExpectedValue</code>.</p></li><li><p><strong><code·class="inline">assertException(Class,·Term,·Expr)</code></strong></p></li><li><p><strong><code·class="inline">assertException(Class,·Term,·Expr,·Comment)</code></strong>·-·Tests·that·<code·class="inline">Expr</code> |
| 63 | completes·abnormally·with·an·exception·of·type·<code·class="inline">Class</code>·and·with·the·associated | 63 | completes·abnormally·with·an·exception·of·type·<code·class="inline">Class</code>·and·with·the·associated |
| 64 | <code·class="inline">Term</code>.·The·assertion·fails·if·<code·class="inline">Expr</code>·raises·a·different·exception·or·if·it | 64 | <code·class="inline">Term</code>.·The·assertion·fails·if·<code·class="inline">Expr</code>·raises·a·different·exception·or·if·it |
| 65 | completes·normally·returning·any·value.</p><p>Notice·that·both·<code·class="inline">Class</code>·and·<code·class="inline">Term</code>·can·be·guarded·patterns,·as·in | 65 | completes·normally·returning·any·value.</p><p>Notice·that·both·<code·class="inline">Class</code>·and·<code·class="inline">Term</code>·can·be·guarded·patterns,·as·in |
| Offset 157, 21 lines modified | Offset 157, 21 lines modified | ||
| 157 | string·and·returns·a·formatted·expressions·as·a·string.·See | 157 | string·and·returns·a·formatted·expressions·as·a·string.·See |
| 158 | <a·href="shell.html#format_shell_func/1"><code·class="inline">shell:format_shell_func/1</code></a>·for·how·to·set·it·from·inside·the·shell.</p><p>If·instead·a·string·is·provided,·it·will·be·used·as·a·shell·command.·Your | 158 | <a·href="shell.html#format_shell_func/1"><code·class="inline">shell:format_shell_func/1</code></a>·for·how·to·set·it·from·inside·the·shell.</p><p>If·instead·a·string·is·provided,·it·will·be·used·as·a·shell·command.·Your |
| 159 | command·must·include·<code·class="inline">${file}</code>·somewhere·in·the·string,·for·the·shell·to·know | 159 | command·must·include·<code·class="inline">${file}</code>·somewhere·in·the·string,·for·the·shell·to·know |
| 160 | where·the·file·goes·in·the·command.</p><pre><code·class="text">-stdlib·format_shell_func·"\"emacs·-batch·\${file}·-l·~/erlang-format/emacs-format-file·-f·emacs-format-function\""</code></pre><pre><code·class="text">-stdlib·format_shell_func·"{shell,·erl_pp_format_func}"</code></pre></li><li><p><strong><code·class="inline"·id="shell_prompt_func">shell_prompt_func·=·{Mod,·Func}·|·default</code></strong>·-·where</p><ul><li><code·class="inline">Mod·=·atom()</code></li><li><code·class="inline">Func·=·atom()</code></li></ul><p>Can·be·used·to·set·a·customized·Erlang·shell·prompt·function.</p></li><li><p><strong><code·class="inline"·id="shell_multiline_prompt">shell_multiline_prompt·=·{Mod,·Func}·|·string()·|·default</code></strong>·-·where</p><ul><li><code·class="inline">Mod·=·atom()</code></li><li><code·class="inline">Func·=·atom()</code></li></ul><p>Can·be·used·to·set·a·customized·multiline·shell·prompt·function.·The·multiline | 160 | where·the·file·goes·in·the·command.</p><pre><code·class="text">-stdlib·format_shell_func·"\"emacs·-batch·\${file}·-l·~/erlang-format/emacs-format-file·-f·emacs-format-function\""</code></pre><pre><code·class="text">-stdlib·format_shell_func·"{shell,·erl_pp_format_func}"</code></pre></li><li><p><strong><code·class="inline"·id="shell_prompt_func">shell_prompt_func·=·{Mod,·Func}·|·default</code></strong>·-·where</p><ul><li><code·class="inline">Mod·=·atom()</code></li><li><code·class="inline">Func·=·atom()</code></li></ul><p>Can·be·used·to·set·a·customized·Erlang·shell·prompt·function.</p></li><li><p><strong><code·class="inline"·id="shell_multiline_prompt">shell_multiline_prompt·=·{Mod,·Func}·|·string()·|·default</code></strong>·-·where</p><ul><li><code·class="inline">Mod·=·atom()</code></li><li><code·class="inline">Func·=·atom()</code></li></ul><p>Can·be·used·to·set·a·customized·multiline·shell·prompt·function.·The·multiline |
| 161 | prompt·function·takes·the·main·prompt·as·its·only·parameter.</p></li><li><p><strong><code·class="inline"·id="shell_saved_results">shell_saved_results·=·integer()·>=·0</code></strong>·-·Can·be | 161 | prompt·function·takes·the·main·prompt·as·its·only·parameter.</p></li><li><p><strong><code·class="inline"·id="shell_saved_results">shell_saved_results·=·integer()·>=·0</code></strong>·-·Can·be |
| 162 | used·to·determine·how·many·results·are·saved·by·the·Erlang·shell.</p></li><li><p><strong><code·class="inline"·id="shell_session_slogan">shell_session_slogan·=·string()·|·fun()·->·string())</code></strong>·-·The·slogan·printed·when·starting·an·Erlang·shell. | 162 | used·to·determine·how·many·results·are·saved·by·the·Erlang·shell.</p></li><li><p><strong><code·class="inline"·id="shell_session_slogan">shell_session_slogan·=·string()·|·fun()·->·string())</code></strong>·-·The·slogan·printed·when·starting·an·Erlang·shell. |
| 163 | Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="ss">erl</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">stdlib</span><span·class="w">·</span><span·class="ss">shell_session_slogan</span><span·class="w">·</span><span·class="ss">'"Test·slogan"'</span><span·class="w"> | 163 | Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="ss">erl</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">stdlib</span><span·class="w">·</span><span·class="ss">shell_session_slogan</span><span·class="w">·</span><span·class="ss">'"Test·slogan"'</span><span·class="w"> |
| 164 | </span><span·class="n">Erlang</span><span·class="o">/</span><span·class="n">OTP</span><span·class="w">·</span><span·class="mi">26</span><span·class="w">·</span><span·class="p"·data-group-id=" | 164 | </span><span·class="n">Erlang</span><span·class="o">/</span><span·class="n">OTP</span><span·class="w">·</span><span·class="mi">26</span><span·class="w">·</span><span·class="p"·data-group-id="3297136069-1">[</span><span·class="n">DEVELOPMENT</span><span·class="p"·data-group-id="3297136069-1">]</span><span·class="w">·</span><span·class="p"·data-group-id="3297136069-2">[</span><span·class="ss">erts</span><span·class="o">-</span><span·class="mf">1[·...·truncated·by·diffoscope;·len:·1496,·SHA:·bb5b80d647e48869fe54f4631d8cf43183f3e2047065ad427a890a8229f03397·...·]-8">]</span><span·class="w"> |
| 165 | </span><span·class="n">Test</span><span·class="w">·</span><span·class="ss">slogan</span><span·class="w"> | 165 | </span><span·class="n">Test</span><span·class="w">·</span><span·class="ss">slogan</span><span·class="w"> |
| 166 | </span><span·class="mi">1</span><span·class="o">></span></code></pre></li><li><p><strong><code·class="inline"·id="shell_slogan">shell_slogan·=·string()·|·fun(()·->·string())</code></strong>·-·The | 166 | </span><span·class="mi">1</span><span·class="o">></span></code></pre></li><li><p><strong><code·class="inline"·id="shell_slogan">shell_slogan·=·string()·|·fun(()·->·string())</code></strong>·-·The |
| 167 | slogan·printed·when·starting·the·Erlang·shell·subsystem.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="ss">erl</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">stdlib</span><span·class="w">·</span><span·class="ss">shell_slogan</span><span·class="w">·</span><span·class="ss">'"Test·slogan"'</span><span·class="w"> | 167 | slogan·printed·when·starting·the·Erlang·shell·subsystem.·Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="ss">erl</span><span·class="w">·</span><span·class="o">-</span><span·class="ss">stdlib</span><span·class="w">·</span><span·class="ss">shell_slogan</span><span·class="w">·</span><span·class="ss">'"Test·slogan"'</span><span·class="w"> |
| 168 | </span><span·class="n">Test</span><span·class="w">·</span><span·class="ss">slogan</span><span·class="w"> | 168 | </span><span·class="n">Test</span><span·class="w">·</span><span·class="ss">slogan</span><span·class="w"> |
| 169 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V13</span><span·class="p">.</span><span·class="mf">0.2</span><span·class="w">··</span><span·class="p"·data-group-id=" | 169 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V13</span><span·class="p">.</span><span·class="mf">0.2</span><span·class="w">··</span><span·class="p"·data-group-id="9201422415-1">(</span><span·class="ss">abort</span><span·class="w">·</span><span·class="ss">with</span><span·class="w">·</span><span·class="err">^</span><span·class="n">G</span><span·class="p"·data-group-id="9201422415-1">)</span><span·class="w"> |
| 170 | </span><span·class="mi">1</span><span·class="o">></span></code></pre><p>The·default·is·the·return·value·of | 170 | </span><span·class="mi">1</span><span·class="o">></span></code></pre><p>The·default·is·the·return·value·of |
| 171 | <a·href="../../../../erts-15.2.3/doc/html/erlang.html#system_info_system_version"><code·class="inline">erlang:system_info(system_version)</code></a>.</p></li><li><p><strong><code·class="inline"·id="shell_strings">shell_strings·=·boolean()</code></strong>·-·Can·be·used·to·determine | 171 | <a·href="../../../../erts-15.2.3/doc/html/erlang.html#system_info_system_version"><code·class="inline">erlang:system_info(system_version)</code></a>.</p></li><li><p><strong><code·class="inline"·id="shell_strings">shell_strings·=·boolean()</code></strong>·-·Can·be·used·to·determine |
| 172 | how·the·Erlang·shell·outputs·lists·of·integers.</p></li></ul><h2·id="see-also"·class="section-heading"> | 172 | how·the·Erlang·shell·outputs·lists·of·integers.</p></li></ul><h2·id="see-also"·class="section-heading"> |
| 173 | ··<a·href="#see-also"·class="hover-link"> | 173 | ··<a·href="#see-also"·class="hover-link"> |
| 174 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 174 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 175 | ··</a> | 175 | ··</a> |
| 176 | ··<span·class="text">See·Also</span> | 176 | ··<span·class="text">See·Also</span> |
| Offset 145, 22 lines modified | Offset 145, 22 lines modified | ||
| 145 | <a·href="#replace/3"><code·class="inline">replace/3</code></a>,·<a·href="#split/2"><code·class="inline">split/2</code></a>,·<a·href="#split/3"><code·class="inline">split/3</code></a>·and·<a·href="#trim/3"><code·class="inline">trim/3</code></a>.</p><p>Splitting·and·appending·strings·is·to·be·done·on·grapheme·clusters·borders. | 145 | <a·href="#replace/3"><code·class="inline">replace/3</code></a>,·<a·href="#split/2"><code·class="inline">split/2</code></a>,·<a·href="#split/3"><code·class="inline">split/3</code></a>·and·<a·href="#trim/3"><code·class="inline">trim/3</code></a>.</p><p>Splitting·and·appending·strings·is·to·be·done·on·grapheme·clusters·borders. |
| 146 | There·is·no·verification·that·the·results·of·appending·strings·are·valid·or | 146 | There·is·no·verification·that·the·results·of·appending·strings·are·valid·or |
| 147 | normalized.</p><p>Most·of·the·functions·expect·all·input·to·be·normalized·to·one·form,·see·for | 147 | normalized.</p><p>Most·of·the·functions·expect·all·input·to·be·normalized·to·one·form,·see·for |
| 148 | example·<a·href="unicode.html#characters_to_nfc_list/1"><code·class="inline">unicode:characters_to_nfc_list/1</code></a>.</p><p>Language·or·locale·specific·handling·of·input·is·not·considered·in·any·function.</p><p>The·functions·can·crash·for·non-valid·input·strings.·For·example,·the·functions | 148 | example·<a·href="unicode.html#characters_to_nfc_list/1"><code·class="inline">unicode:characters_to_nfc_list/1</code></a>.</p><p>Language·or·locale·specific·handling·of·input·is·not·considered·in·any·function.</p><p>The·functions·can·crash·for·non-valid·input·strings.·For·example,·the·functions |
| 149 | expect·UTF-8·binaries·but·not·all·functions·verify·that·all·binaries·are·encoded | 149 | expect·UTF-8·binaries·but·not·all·functions·verify·that·all·binaries·are·encoded |
| 150 | correctly.</p><p>Unless·otherwise·specified·the·return·value·type·is·the·same·as·the·input·type. | 150 | correctly.</p><p>Unless·otherwise·specified·the·return·value·type·is·the·same·as·the·input·type. |
| 151 | That·is,·binary·input·returns·binary·output,·list·input·returns·a·list·output, | 151 | That·is,·binary·input·returns·binary·output,·list·input·returns·a·list·output, |
| 152 | and·mixed·input·can·return·a·mixed·output.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">trim</span><span·class="p"·data-group-id=" | 152 | and·mixed·input·can·return·a·mixed·output.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">trim</span><span·class="p"·data-group-id="0708257723-1">(</span><span·class="s">"··sarah··"</span><span·class="p"·data-group-id="0708257723-1">)</span><span·class="p">.</span><span·class="w"> |
| 153 | </span><span·class="s">"sarah"</span><span·class="gp·unselectable"> | 153 | </span><span·class="s">"sarah"</span><span·class="gp·unselectable"> |
| 154 | 2>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">trim</span><span·class="p"·data-group-id=" | 154 | 2>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">trim</span><span·class="p"·data-group-id="0708257723-2">(</span><span·class="p"·data-group-id="0708257723-3"><<</span><span·class="s">"··sarah··"</span><span·class="p"·data-group-id="0708257723-3">>></span><span·class="p"·data-group-id="0708257723-2">)</span><span·class="p">.</span><span·class="w"> |
| 155 | </span><span·class="p"·data-group-id=" | 155 | </span><span·class="p"·data-group-id="0708257723-4"><<</span><span·class="s">"sarah"</span><span·class="p"·data-group-id="0708257723-4">>></span><span·class="gp·unselectable"> |
| 156 | 3>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">lexemes</span><span·class="p"·data-group-id=" | 156 | 3>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">lexemes</span><span·class="p"·data-group-id="0708257723-5">(</span><span·class="s">"foo·bar"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"·"</span><span·class="p"·data-group-id="0708257723-5">)</span><span·class="p">.</span><span·class="w"> |
| 157 | </span><span·class="p"·data-group-id=" | 157 | </span><span·class="p"·data-group-id="0708257723-6">[</span><span·class="s">"foo"</span><span·class="p">,</span><span·class="s">"bar"</span><span·class="p"·data-group-id="0708257723-6">]</span><span·class="gp·unselectable"> |
| 158 | 4>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">lexemes</span><span·class="p"·data-group-id=" | 158 | 4>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">lexemes</span><span·class="p"·data-group-id="0708257723-7">(</span><span·class="p"·data-group-id="0708257723-8"><<</span><span·class="s">"foo·bar"</span><span·class="p"·data-group-id="0708257723-8">>></span><span·class="p">,</span><span·class="w">·</span><span·class="s">"·&[·...·truncated·by·diffoscope;·len:·53,·SHA:·f881a0b192b9ce77c8a0027b8c8ae59b6b2c4242a1f6cec0776591c3c7145dd9·...·]-7">)</span><span·class="p">.</span><span·class="w"> |
| 159 | </span><span·class="p"·data-group-id=" | 159 | </span><span·class="p"·data-group-id="0708257723-9">[</span><span·class="p"·data-group-id="0708257723-10"><<</span><span·class="s">"foo"</span><span·class="p"·data-group-id="0708257723-10">>></span><span·class="p">,</span><span·class="p"·data-group-id="0708257723-11"><[·...·truncated·by·diffoscope;·len:·151,·SHA:·acd4e67ca2a3f4f0e49e5b92495059ee24a75fff8fef89e3d6001cc384490882·...·]-9">]</span></code></pre><p>This·module·has·been·reworked·in·Erlang/OTP·20·to·handle·<a·href="unicode.html#t:chardata/0"><code·class="inline">unicode:chardata/0</code></a> |
| 160 | and·operate·on·grapheme·clusters.·The | 160 | and·operate·on·grapheme·clusters.·The |
| 161 | <a·href="string.html#obsolete-api-functions"><code·class="inline">old·functions</code></a>·that·only·work·on·Latin-1 | 161 | <a·href="string.html#obsolete-api-functions"><code·class="inline">old·functions</code></a>·that·only·work·on·Latin-1 |
| 162 | lists·as·input·are·still·available·but·should·not·be·used,·they·will·be | 162 | lists·as·input·are·still·available·but·should·not·be·used,·they·will·be |
| 163 | deprecated·in·a·future·release.</p><h2·id="module-notes"·class="section-heading"> | 163 | deprecated·in·a·future·release.</p><h2·id="module-notes"·class="section-heading"> |
| 164 | ··<a·href="#module-notes"·class="hover-link"> | 164 | ··<a·href="#module-notes"·class="hover-link"> |
| 165 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 165 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 166 | ··</a> | 166 | ··</a> |
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| 1062 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·casefold(String·::·<a·href="unicode.html#t:chardata/0">unicode:chardata</a>())·->·<a·href="unicode.html#t:chardata/0">unicode:chardata</a>().</pre> | 1062 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·casefold(String·::·<a·href="unicode.html#t:chardata/0">unicode:chardata</a>())·->·<a·href="unicode.html#t:chardata/0">unicode:chardata</a>().</pre> |
| 1063 | ······</div> | 1063 | ······</div> |
| 1064 | <p>Converts·<code·class="inline">String</code>·to·a·case-agnostic·comparable·string.·Function | 1064 | <p>Converts·<code·class="inline">String</code>·to·a·case-agnostic·comparable·string.·Function |
| 1065 | <a·href="#casefold/1"><code·class="inline">casefold/1</code></a>·is·preferred·over·<a·href="#lowercase/1"><code·class="inline">lowercase/1</code></a> | 1065 | <a·href="#casefold/1"><code·class="inline">casefold/1</code></a>·is·preferred·over·<a·href="#lowercase/1"><code·class="inline">lowercase/1</code></a> |
| 1066 | when·two·strings·are·to·be·compared·for·equality.·See·also·<a·href="#equal/4"><code·class="inline">equal/4</code></a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">casefold</span><span·class="p"·data-group-id=" | 1066 | when·two·strings·are·to·be·compared·for·equality.·See·also·<a·href="#equal/4"><code·class="inline">equal/4</code></a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">casefold</span><span·class="p"·data-group-id="3149281966-1">(</span><span·class="s">"Ω·and·ẞ·SHARP·S"</span><span·class="p"·data-group-id="3149281966-1">)</span><span·class="p">.</span><span·class="w"> |
| 1067 | </span><span·class="s">"ω·and·ss·sharp·s"</span></code></pre> | 1067 | </span><span·class="s">"ω·and·ss·sharp·s"</span></code></pre> |
| 1068 | ··</section> | 1068 | ··</section> |
| 1069 | </section> | 1069 | </section> |
| 1070 | <section·class="detail"·id="chomp/1"> | 1070 | <section·class="detail"·id="chomp/1"> |
| 1071 | ··<div·class="detail-header"> | 1071 | ··<div·class="detail-header"> |
| 1072 | ····<a·href="#chomp/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1072 | ····<a·href="#chomp/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 1092, 17 lines modified | Offset 1092, 17 lines modified | ||
| 1092 | ······<div·class="specs"> | 1092 | ······<div·class="specs"> |
| 1093 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·chomp(String·::·<a·href="unicode.html#t:chardata/0">unicode:chardata</a>())·->·<a·href="unicode.html#t:chardata/0">unicode:chardata</a>().</pre> | 1093 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·chomp(String·::·<a·href="unicode.html#t:chardata/0">unicode:chardata</a>())·->·<a·href="unicode.html#t:chardata/0">unicode:chardata</a>().</pre> |
| 1094 | ······</div> | 1094 | ······</div> |
| 1095 | <p>Returns·a·string·where·any·trailing·<code·class="inline">\n</code>·or·<code·class="inline">\r\n</code>·have·been·removed·from | 1095 | <p>Returns·a·string·where·any·trailing·<code·class="inline">\n</code>·or·<code·class="inline">\r\n</code>·have·been·removed·from |
| 1096 | <code·class="inline">String</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">182>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">chomp</span><span·class="p"·data-group-id=" | 1096 | <code·class="inline">String</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">182>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">chomp</span><span·class="p"·data-group-id="3028487329-1">(</span><span·class="p"·data-group-id="3028487329-2"><<</span><span·class="s">"\nHello\n\n"</span><span·class="p"·data-group-id="3028487329-2">>></span><span·class="p"·data-group-id="3028487329-1">)</span><span·class="p">.</span><span·class="w"> |
| 1097 | </span><span·class="p"·data-group-id=" | 1097 | </span><span·class="p"·data-group-id="3028487329-3"><<</span><span·class="s">"\nHello"</span><span·class="p"·data-group-id="3028487329-3">>></span><span·class="gp·unselectable"> |
| 1098 | 183>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">chomp</span><span·class="p"·data-group-id=" | 1098 | 183>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">chomp</span><span·class="p"·data-group-id="3028487329-4">(</span><span·class="s">"\nHello\r\r\n"</span><span·class="p"·data-group-id="3028487329-4">)</span><span·class="p">.</span><span·class="w"> |
| 1099 | </span><span·class="s">"\nHello\r"</span></code></pre> | 1099 | </span><span·class="s">"\nHello\r"</span></code></pre> |
| 1100 | ··</section> | 1100 | ··</section> |
| 1101 | </section> | 1101 | </section> |
| 1102 | <section·class="detail"·id="equal/2"> | 1102 | <section·class="detail"·id="equal/2"> |
| 1103 | ··<div·class="detail-header"> | 1103 | ··<div·class="detail-header"> |
| 1104 | ····<a·href="#equal/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1104 | ····<a·href="#equal/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 1189, 19 lines modified | Offset 1189, 19 lines modified | ||
| 1189 | <p>Returns·<code·class="inline">true</code>·if·<code·class="inline">A</code>·and·<code·class="inline">B</code>·are·equal,·otherwise·<code·class="inline">false</code>.</p><p>If·<code·class="inline">IgnoreCase</code>·is·<code·class="inline">true</code>·the·function·does·<a·href="#casefold/1"><code·class="inline">casefold</code>ing</a>·on·the | 1189 | <p>Returns·<code·class="inline">true</code>·if·<code·class="inline">A</code>·and·<code·class="inline">B</code>·are·equal,·otherwise·<code·class="inline">false</code>.</p><p>If·<code·class="inline">IgnoreCase</code>·is·<code·class="inline">true</code>·the·function·does·<a·href="#casefold/1"><code·class="inline">casefold</code>ing</a>·on·the |
| 1190 | fly·before·the·equality·test.</p><p>If·<code·class="inline">Norm</code>·is·not·<code·class="inline">none</code>·the·function·applies·normalization·on·the·fly·before·the | 1190 | fly·before·the·equality·test.</p><p>If·<code·class="inline">Norm</code>·is·not·<code·class="inline">none</code>·the·function·applies·normalization·on·the·fly·before·the |
| 1191 | equality·test.·There·are·four·available·normalization·forms: | 1191 | equality·test.·There·are·four·available·normalization·forms: |
| 1192 | <a·href="unicode.html#characters_to_nfc_list/1"><code·class="inline">nfc</code></a>, | 1192 | <a·href="unicode.html#characters_to_nfc_list/1"><code·class="inline">nfc</code></a>, |
| 1193 | <a·href="unicode.html#characters_to_nfd_list/1"><code·class="inline">nfd</code></a>, | 1193 | <a·href="unicode.html#characters_to_nfd_list/1"><code·class="inline">nfd</code></a>, |
| 1194 | <a·href="unicode.html#characters_to_nfkc_list/1"><code·class="inline">nfkc</code></a>,·and | 1194 | <a·href="unicode.html#characters_to_nfkc_list/1"><code·class="inline">nfkc</code></a>,·and |
| 1195 | <a·href="unicode.html#characters_to_nfkd_list/1"><code·class="inline">nfkd</code></a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">equal</span><span·class="p"·data-group-id=" | 1195 | <a·href="unicode.html#characters_to_nfkd_list/1"><code·class="inline">nfkd</code></a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">equal</span><span·class="p"·data-group-id="5035514289-1">(</span><span·class="s">"åäö"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5035514289-2"><<</span><span·class="s">"åäö"</span><span·class="o">/</span><span·class="ss">utf8</spa[·...·truncated·by·diffoscope;·len:·103,·SHA:·33ffbea7c42ae85f1b254c97dfa68b684c1b089170e2e6203ce9b489256a862d·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 1196 | </span><span·class="ss">true</span><span·class="gp·unselectable"> | 1196 | </span><span·class="ss">true</span><span·class="gp·unselectable"> |
| 1197 | 2>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">equal</span><span·class="p"·data-group-id=" | 1197 | 2>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">equal</span><span·class="p"·data-group-id="5035514289-3">(</span><span·class="s">"åäö"</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">unicode</span><span·class="p">:</span><span·class="nf">characters_to_nfd_binary</span><span·class="p"·data-group-id="5035514289-4">[·...·truncated·by·diffoscope;·len:·140,·SHA:·09c1c973ea5f8d6a2358d1caf9c2eb6bfb226f867e4b3445849b20e7b0ea21b1·...·]-3">)</span><span·class="p">.</span><span·class="w"> |
| 1198 | </span><span·class="ss">false</span><span·class="gp·unselectable"> | 1198 | </span><span·class="ss">false</span><span·class="gp·unselectable"> |
| 1199 | 3>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">equal</span><span·class="p"·data-group-id=" | 1199 | 3>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">equal</span><span·class="p"·data-group-id="5035514289-5">(</span><span·class="s">"åäö"</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">unicode</span><span·class="p">:</span><span·class="nf">characters_to_nfd_binary</span><span·class="p"·data-group-id="5035514289-6">[·...·truncated·by·diffoscope;·len:·291,·SHA:·f647ae64ce41cb86cb418e1863ab052869862f66af860530c1f27a305087415b·...·]-5">)</span><span·class="p">.</span><span·class="w"> |
| 1200 | </span><span·class="ss">true</span></code></pre> | 1200 | </span><span·class="ss">true</span></code></pre> |
| 1201 | ··</section> | 1201 | ··</section> |
| 1202 | </section> | 1202 | </section> |
| 1203 | <section·class="detail"·id="find/2"> | 1203 | <section·class="detail"·id="find/2"> |
| 1204 | ··<div·class="detail-header"> | 1204 | ··<div·class="detail-header"> |
| 1205 | ····<a·href="#find/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1205 | ····<a·href="#find/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 1255, 21 lines modified | Offset 1255, 21 lines modified | ||
| 1255 | ··············when·String·::·<a·href="unicode.html#t:chardata/0">unicode:chardata</a>(),·SearchPattern·::·<a·href="unicode.html#t:chardata/0">unicode:chardata</a>(),·Dir·::·<a·href="#t:direction/0">direction</a>().</pre> | 1255 | ··············when·String·::·<a·href="unicode.html#t:chardata/0">unicode:chardata</a>(),·SearchPattern·::·<a·href="unicode.html#t:chardata/0">unicode:chardata</a>(),·Dir·::·<a·href="#t:direction/0">direction</a>().</pre> |
| 1256 | ······</div> | 1256 | ······</div> |
| 1257 | <p>Removes·anything·before·<code·class="inline">SearchPattern</code>·in·<code·class="inline">String</code>·and·returns·the·remainder·of | 1257 | <p>Removes·anything·before·<code·class="inline">SearchPattern</code>·in·<code·class="inline">String</code>·and·returns·the·remainder·of |
| 1258 | the·string·or·<code·class="inline">nomatch</code>·if·<code·class="inline">SearchPattern</code>·is·not·found.·<code·class="inline">Dir</code>,·which·can·be | 1258 | the·string·or·<code·class="inline">nomatch</code>·if·<code·class="inline">SearchPattern</code>·is·not·found.·<code·class="inline">Dir</code>,·which·can·be |
| 1259 | <code·class="inline">leading</code>·or·<code·class="inline">trailing</code>,·indicates·from·which·direction·characters·are·to·be | 1259 | <code·class="inline">leading</code>·or·<code·class="inline">trailing</code>,·indicates·from·which·direction·characters·are·to·be |
| 1260 | searched.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">find</span><span·class="p"·data-group-id="7 | 1260 | searched.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">find</span><span·class="p"·data-group-id="9272725195-1">(</span><span·class="s">"ab..cd..ef"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"."</span><span·class="p"·data-group-id="9272725195-1">)</span><span·class="p">.</span><span·class="w"> |
| 1261 | </span><span·class="s">"..cd..ef"</span><span·class="gp·unselectable"> | 1261 | </span><span·class="s">"..cd..ef"</span><span·class="gp·unselectable"> |
| 1262 | 2>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">find</span><span·class="p"·data-group-id="7 | 1262 | 2>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">find</span><span·class="p"·data-group-id="9272725195-2">(</span><span·class="p"·data-group-id="9272725195-3"><<</span><span·class="s">"ab..cd..ef"</span><span·class="p"·data-group-id="9272725195-3">>></span><span·class="p">,</span><span·class="w">·</span><span·class="s">"[·...·truncated·by·diffoscope;·len:·137,·SHA:·7bc3dbee3e7729aeeb3b48f5c4bcb8d2bb5fca0868781e7d45defa1fda8806b3·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 1263 | </span><span·class="p"·data-group-id="7 | 1263 | </span><span·class="p"·data-group-id="9272725195-4"><<</span><span·class="s">"..ef"</span><span·class="p"·data-group-id="9272725195-4">>></span><span·class="gp·unselectable"> |
| 1264 | 3>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">find</span><span·class="p"·data-group-id="7 | 1264 | 3>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">find</span><span·class="p"·data-group-id="9272725195-5">(</span><span·class="p"·data-group-id="9272725195-6"><<</span><span·class="s">"ab..cd..ef"</span><span·class="p"·data-group-id="9272725195-6">>></span><span·class="p">,</span><span·class="w">·</span><span·class="s">"[·...·truncated·by·diffoscope;·len:·135,·SHA:·7e58adbe64ec7c6fa7414a250222bbfa1d8fa289c592192bc0aa88305d1bed94·...·]-5">)</span><span·class="p">.</span><span·class="w"> |
| 1265 | </span><span·class="ss">nomatch</span><span·class="gp·unselectable"> | 1265 | </span><span·class="ss">nomatch</span><span·class="gp·unselectable"> |
| 1266 | 4>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">find</span><span·class="p"·data-group-id="7 | 1266 | 4>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">find</span><span·class="p"·data-group-id="9272725195-7">(</span><span·class="s">"ab..cd..ef"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"x"</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">trailing</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·16,·SHA:·af37b939dd6440ebf71ac289c7564c8780701a4ce94053764c68f2bdfd1cfe56·...·]-7">)</span><span·class="p">.</span><span·class="w"> |
| 1267 | </span><span·class="ss">nomatch</span></code></pre> | 1267 | </span><span·class="ss">nomatch</span></code></pre> |
| 1268 | ··</section> | 1268 | ··</section> |
| 1269 | </section> | 1269 | </section> |
| 1270 | <section·class="detail"·id="is_empty/1"> | 1270 | <section·class="detail"·id="is_empty/1"> |
| 1271 | ··<div·class="detail-header"> | 1271 | ··<div·class="detail-header"> |
| 1272 | ····<a·href="#is_empty/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1272 | ····<a·href="#is_empty/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
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| 1290 | ······<div·class="specs"> | 1290 | ······<div·class="specs"> |
| 1291 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·is_empty(String·::·<a·href="unicode.html#t:chardata/0">unicode:chardata</a>())·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:boolean/0">boolean</a>().</pre> | 1291 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·is_empty(String·::·<a·href="unicode.html#t:chardata/0">unicode:chardata</a>())·->·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:boolean/0">boolean</a>().</pre> |
| 1292 | ······</div> | 1292 | ······</div> |
| 1293 | <p>Returns·<code·class="inline">true</code>·if·<code·class="inline">String</code>·is·the·empty·string,·otherwise·<code·class="inline">false</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">is_empty</span><span·class="p"·data-group-id=" | 1293 | <p>Returns·<code·class="inline">true</code>·if·<code·class="inline">String</code>·is·the·empty·string,·otherwise·<code·class="inline">false</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">is_empty</span><span·class="p"·data-group-id="9529616899-1">(</span><span·class="s">"foo"</span><span·class="p"·data-group-id="9529616899-1">)</span><span·class="p">.</span><span·class="w"> |
| 1294 | </span><span·class="ss">false</span><span·class="gp·unselectable"> | 1294 | </span><span·class="ss">false</span><span·class="gp·unselectable"> |
| 1295 | 2>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">is_empty</span><span·class="p"·data-group-id=" | 1295 | 2>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">is_empty</span><span·class="p"·data-group-id="9529616899-2">(</span><span·class="p"·data-group-id="9529616899-3">[</span><span·class="s">""</span><span·class="p">,</span><span·class="p"·data-group-id="9529616899-4"><<</span><span·class="p"·data-group-id="9529616899-4">>></span><s[·...·truncated·by·diffoscope;·len:·92,·SHA:·304c8893c68391e5f9c6e7c7212af76600311c6add1fa59dfe72d73861277796·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 1296 | </span><span·class="ss">true</span></code></pre> | 1296 | </span><span·class="ss">true</span></code></pre> |
| 1297 | ··</section> | 1297 | ··</section> |
| 1298 | </section> | 1298 | </section> |
| 1299 | <section·class="detail"·id="jaro_similarity/2"> | 1299 | <section·class="detail"·id="jaro_similarity/2"> |
| 1300 | ··<div·class="detail-header"> | 1300 | ··<div·class="detail-header"> |
| 1301 | ····<a·href="#jaro_similarity/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1301 | ····<a·href="#jaro_similarity/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
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| 1328 | ·····························Similarity·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:float/0">float</a>().</pre> | 1328 | ·····························Similarity·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:float/0">float</a>().</pre> |
| 1329 | ······</div> | 1329 | ······</div> |
| 1330 | <p>Returns·a·float·between·<code·class="inline">+0.0</code>·and·<code·class="inline">1.0</code>·representing·the | 1330 | <p>Returns·a·float·between·<code·class="inline">+0.0</code>·and·<code·class="inline">1.0</code>·representing·the |
| 1331 | <a·href="https://en.wikipedia.org/wiki/Jaro%E2%80%93Winkler_distance">Jaro·similarity</a> | 1331 | <a·href="https://en.wikipedia.org/wiki/Jaro%E2%80%93Winkler_distance">Jaro·similarity</a> |
| 1332 | between·the·given·strings.·Strings·with·a·higher·similarity·will·score·closer | 1332 | between·the·given·strings.·Strings·with·a·higher·similarity·will·score·closer |
| 1333 | to·<code·class="inline">1.0</code>,·with·<code·class="inline">+0.0</code>·meaning·no·similarity·and·<code·class="inline">1.0</code>·meaning·an·exact·match.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">jaro_similarity</span><span·class="p"·data-group-id="4 | 1333 | to·<code·class="inline">1.0</code>,·with·<code·class="inline">+0.0</code>·meaning·no·similarity·and·<code·class="inline">1.0</code>·meaning·an·exact·match.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">jaro_similarity</span><span·class="p"·data-group-id="4336389297-1">(</span><span·class="s">"ditto"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"ditto"</span><span·class="p"·data-group-id="4336389297-1">)</span><span·class="p">.</span><span·class="w"> |
| 1334 | </span><span·class="mf">1.0</span><span·class="gp·unselectable"> | 1334 | </span><span·class="mf">1.0</span><span·class="gp·unselectable"> |
| 1335 | 2>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">jaro_similarity</span><span·class="p"·data-group-id="4 | 1335 | 2>·</span><span·class="nc">string</span><span·class="p">:</span><span·class="nf">jaro_similarity</span><span·class="p"·data-group-id="4336389297-2">(</span><span·class="s">"foo"</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"bar"</span><span·class="p"·data-group-id="4336389297-2">)</span><span·class="p">.</span><span·class="w"> |
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| 154 | left.</p><p><a·href=""·id="sup_flags"></a></p><h3·id="module-supervisor-flags"·class="section-heading"> | 154 | left.</p><p><a·href=""·id="sup_flags"></a></p><h3·id="module-supervisor-flags"·class="section-heading"> |
| 155 | ··<a·href="#module-supervisor-flags"·class="hover-link"> | 155 | ··<a·href="#module-supervisor-flags"·class="hover-link"> |
| 156 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 156 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 157 | ··</a> | 157 | ··</a> |
| 158 | ··<span·class="text">Supervisor·flags</span> | 158 | ··<span·class="text">Supervisor·flags</span> |
| 159 | </h3> | 159 | </h3> |
| 160 | <p>The·supervisor·properties·are·defined·by·the·supervisor·flags.·The·type | 160 | <p>The·supervisor·properties·are·defined·by·the·supervisor·flags.·The·type |
| 161 | definition·for·the·supervisor·flags·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">sup_flags</span><span·class="p"·data-group-id=" | 161 | definition·for·the·supervisor·flags·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">sup_flags</span><span·class="p"·data-group-id="8963079844-1">(</span><span·class="p"·data-group-id="8963079844-1">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="8963079844-2">#{</span><span·class="ss">strategy</span><span·class="w">·</span[·...·truncated·by·diffoscope;·len:·179,·SHA:·47083996cf818414b0c5d08bcfd5bb9c31296a522b77512a9c6e80ab851640a6·...·]-3">)</span><span·class="p">,</span><span·class="w">···········</span><span·class="c1">%·optional</span><span·class="w"> |
| 162 | ················</span><span·class="ss">intensity</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">non_neg_integer</span><span·class="p"·data-group-id=" | 162 | ················</span><span·class="ss">intensity</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">non_neg_integer</span><span·class="p"·data-group-id="8963079844-4">(</span><span·class="p"·data-group-id="8963079844-4">)</span><span·class="p">,</span><span·class="w">···</span><span·class="c1">%·optional</span><span·class="w"> |
| 163 | ················</span><span·class="ss">period</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">pos_integer</span><span·class="p"·data-group-id=" | 163 | ················</span><span·class="ss">period</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">pos_integer</span><span·class="p"·data-group-id="8963079844-5">(</span><span·class="p"·data-group-id="8963079844-5">)</span><span·class="p">,</span><span·class="w">··········</span><span·class="c1">%·optional</span><span·class="w"> |
| 164 | ················</span><span·class="ss">auto_shutdown</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">auto_shutdown</span><span·class="p"·data-group-id=" | 164 | ················</span><span·class="ss">auto_shutdown</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">auto_shutdown</span><span·class="p"·data-group-id="8963079844-6">(</span><span·class="p"·data-group-id="8963079844-6">)</span><span·class="p"·data-group-id="8963079844-2">}</span><span·class="w">·</span><span·class="c1">%·optional</span></code></pre><h4>Restart·Strategies</h4><p>A·supervisor·can·have·one·of·the·following·<em>restart·strategies</em>·specified·with |
| 165 | the·<code·class="inline">strategy</code>·key·in·the·above·map:</p><ul><li><p><code·class="inline">one_for_one</code>·-·If·one·child·process·terminates·and·is·to·be·restarted,·only | 165 | the·<code·class="inline">strategy</code>·key·in·the·above·map:</p><ul><li><p><code·class="inline">one_for_one</code>·-·If·one·child·process·terminates·and·is·to·be·restarted,·only |
| 166 | that·child·process·is·affected.·This·is·the·default·restart·strategy.</p></li><li><p><code·class="inline">one_for_all</code>·-·If·one·child·process·terminates·and·is·to·be·restarted,·all | 166 | that·child·process·is·affected.·This·is·the·default·restart·strategy.</p></li><li><p><code·class="inline">one_for_all</code>·-·If·one·child·process·terminates·and·is·to·be·restarted,·all |
| 167 | other·child·processes·are·terminated·and·then·all·child·processes·are | 167 | other·child·processes·are·terminated·and·then·all·child·processes·are |
| 168 | restarted.</p></li><li><p><code·class="inline">rest_for_one</code>·-·If·one·child·process·terminates·and·is·to·be·restarted,·the | 168 | restarted.</p></li><li><p><code·class="inline">rest_for_one</code>·-·If·one·child·process·terminates·and·is·to·be·restarted,·the |
| 169 | 'rest'·of·the·child·processes·(that·is,·the·child·processes·after·the | 169 | 'rest'·of·the·child·processes·(that·is,·the·child·processes·after·the |
| 170 | terminated·child·process·in·the·start·order)·are·terminated.·Then·the | 170 | terminated·child·process·in·the·start·order)·are·terminated.·Then·the |
| 171 | terminated·child·process·and·all·child·processes·after·it·are·restarted.</p></li><li><p><code·class="inline">simple_one_for_one</code>·-·A·simplified·<code·class="inline">one_for_one</code>·supervisor,·where·all·child | 171 | terminated·child·process·and·all·child·processes·after·it·are·restarted.</p></li><li><p><code·class="inline">simple_one_for_one</code>·-·A·simplified·<code·class="inline">one_for_one</code>·supervisor,·where·all·child |
| Offset 201, 21 lines modified | Offset 201, 21 lines modified | ||
| 201 | the·automatic·shutdowns·they·rely·on·will·not·happen.</p><p>It·is·up·to·implementors·to·take·proper·precautions·if·they·expect·that·their | 201 | the·automatic·shutdowns·they·rely·on·will·not·happen.</p><p>It·is·up·to·implementors·to·take·proper·precautions·if·they·expect·that·their |
| 202 | applications·may·be·compiled·with·older·OTP·versions.</p></section><p><a·href=""·id="child_spec"></a></p><h3·id="module-child-specification"·class="section-heading"> | 202 | applications·may·be·compiled·with·older·OTP·versions.</p></section><p><a·href=""·id="child_spec"></a></p><h3·id="module-child-specification"·class="section-heading"> |
| 203 | ··<a·href="#module-child-specification"·class="hover-link"> | 203 | ··<a·href="#module-child-specification"·class="hover-link"> |
| 204 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 204 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 205 | ··</a> | 205 | ··</a> |
| 206 | ··<span·class="text">Child·specification</span> | 206 | ··<span·class="text">Child·specification</span> |
| 207 | </h3> | 207 | </h3> |
| 208 | <p>The·type·definition·of·a·child·specification·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">child_spec</span><span·class="p"·data-group-id=" | 208 | <p>The·type·definition·of·a·child·specification·is·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">child_spec</span><span·class="p"·data-group-id="3836457119-1">(</span><span·class="p"·data-group-id="3836457119-1">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="3836457119-2">#{</span><span·class="ss">id</span><span·class="w">·</span><span[·...·truncated·by·diffoscope;·len:·173,·SHA:·a25065253774f4e2e9ad7f4cea11149f3f329ca1e0f90324552bc546b7dd9a37·...·]-3">)</span><span·class="p">,</span><span·class="w">·············</span><span·class="c1">%·mandatory</span><span·class="w"> |
| 209 | ·················</span><span·class="ss">start</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">mfargs</span><span·class="p"·data-group-id=" | 209 | ·················</span><span·class="ss">start</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">mfargs</span><span·class="p"·data-group-id="3836457119-4">(</span><span·class="p"·data-group-id="3836457119-4">)</span><span·class="p">,</span><span·class="w">············</span><span·class="c1">%·mandatory</span><span·class="w"> |
| 210 | ·················</span><span·class="ss">restart</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">restart</span><span·class="p"·data-group-id=" | 210 | ·················</span><span·class="ss">restart</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">restart</span><span·class="p"·data-group-id="3836457119-5">(</span><span·class="p"·data-group-id="3836457119-5">)</span><span·class="p">,</span><span·class="w">·········</span><span·class="c1">%·optional</span><span·class="w"> |
| 211 | ·················</span><span·class="ss">significant</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">significant</span><span·class="p"·data-group-id=" | 211 | ·················</span><span·class="ss">significant</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">significant</span><span·class="p"·data-group-id="3836457119-6">(</span><span·class="p"·data-group-id="3836457119-6">)</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%·optional</span><span·class="w"> |
| 212 | ·················</span><span·class="ss">shutdown</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">shutdown</span><span·class="p"·data-group-id=" | 212 | ·················</span><span·class="ss">shutdown</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">shutdown</span><span·class="p"·data-group-id="3836457119-7">(</span><span·class="p"·data-group-id="3836457119-7">)</span><span·class="p">,</span><span·class="w">·······</span><span·class="c1">%·optional</span><span·class="w"> |
| 213 | ·················</span><span·class="ss">type</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">worker</span><span·class="p"·data-group-id=" | 213 | ·················</span><span·class="ss">type</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">worker</span><span·class="p"·data-group-id="3836457119-8">(</span><span·class="p"·data-group-id="3836457119-8">)</span><span·class="p">,</span><span·class="w">·············</span><span·class="c1">%·optional</span><span·class="w"> |
| 214 | ·················</span><span·class="ss">modules</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">modules</span><span·class="p"·data-group-id=" | 214 | ·················</span><span·class="ss">modules</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="nf">modules</span><span·class="p"·data-group-id="3836457119-9">(</span><span·class="p"·data-group-id="3836457119-9">)</span><span·class="p"·data-group-id="3836457119-2">}</span><span·class="w">·········</span><span·class="c1">%·optional</span></code></pre><p>The·old·tuple·format·is·kept·for·backwards·compatibility,·see·<a·href="#t:child_spec/0"><code·class="inline">child_spec/0</code></a>, |
| 215 | but·the·map·is·preferred.</p><ul><li><p><code·class="inline">id</code>·is·used·to·identify·the·child·specification·internally·by·the·supervisor.</p><p>The·<code·class="inline">id</code>·key·is·mandatory.</p><p>Notice·that·this·identifier·on·occations·has·been·called·"name".·As·far·as | 215 | but·the·map·is·preferred.</p><ul><li><p><code·class="inline">id</code>·is·used·to·identify·the·child·specification·internally·by·the·supervisor.</p><p>The·<code·class="inline">id</code>·key·is·mandatory.</p><p>Notice·that·this·identifier·on·occations·has·been·called·"name".·As·far·as |
| 216 | possible,·the·terms·"identifier"·or·"id"·are·now·used·but·to·keep·backward | 216 | possible,·the·terms·"identifier"·or·"id"·are·now·used·but·to·keep·backward |
| 217 | compatibility,·some·occurences·of·"name"·can·still·be·found,·for·example·in | 217 | compatibility,·some·occurences·of·"name"·can·still·be·found,·for·example·in |
| 218 | error·messages.</p></li><li><p><code·class="inline">start</code>·defines·the·function·call·used·to·start·the·child·process.·It·must·be | 218 | error·messages.</p></li><li><p><code·class="inline">start</code>·defines·the·function·call·used·to·start·the·child·process.·It·must·be |
| 219 | a·module-function-arguments·tuple·<code·class="inline">{M,F,A}</code>·used·as | 219 | a·module-function-arguments·tuple·<code·class="inline">{M,F,A}</code>·used·as |
| 220 | <a·href="../../../../erts-15.2.3/doc/html/erlang.html#apply/3"><code·class="inline">apply(M,F,A)</code></a>.</p><p>The·start·function·<em>must·create·and·link·to</em>·the·child·process,·and·must | 220 | <a·href="../../../../erts-15.2.3/doc/html/erlang.html#apply/3"><code·class="inline">apply(M,F,A)</code></a>.</p><p>The·start·function·<em>must·create·and·link·to</em>·the·child·process,·and·must |
| 221 | return·<code·class="inline">{ok,Child}</code>·or·<code·class="inline">{ok,Child,Info}</code>,·where·<code·class="inline">Child</code>·is·the·pid·of·the | 221 | return·<code·class="inline">{ok,Child}</code>·or·<code·class="inline">{ok,Child,Info}</code>,·where·<code·class="inline">Child</code>·is·the·pid·of·the |
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| 142 | <a·href="../../../../erts-15.2.3/doc/html/time_correction.html"><em>Time·and·Time·Correction·in·Erlang</em></a> | 142 | <a·href="../../../../erts-15.2.3/doc/html/time_correction.html"><em>Time·and·Time·Correction·in·Erlang</em></a> |
| 143 | ERTS·User's·guide.</p><h2·id="module-examples"·class="section-heading"> | 143 | ERTS·User's·guide.</p><h2·id="module-examples"·class="section-heading"> |
| 144 | ··<a·href="#module-examples"·class="hover-link"> | 144 | ··<a·href="#module-examples"·class="hover-link"> |
| 145 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 145 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 146 | ··</a> | 146 | ··</a> |
| 147 | ··<span·class="text">Examples</span> | 147 | ··<span·class="text">Examples</span> |
| 148 | </h2> | 148 | </h2> |
| 149 | <p><em>Example·1</em></p><p>The·following·example·shows·how·to·print·"Hello·World!"·in·5·seconds:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">timer</span><span·class="p">:</span><span·class="nf">apply_after</span><span·class="p"·data-group-id=" | 149 | <p><em>Example·1</em></p><p>The·following·example·shows·how·to·print·"Hello·World!"·in·5·seconds:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">timer</span><span·class="p">:</span><span·class="nf">apply_after</span><span·class="p"·data-group-id="3262645747-1">(</span><span·class="mi">5000</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">io</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">format</span><span·class="p">,</span><span·class="w">·</span><span·[·...·truncated·by·diffoscope;·len:·440,·SHA:·927bde3a3852e506a14c57dbfd842cc08167f8f3ea933b672cd4f1c6efd1c987·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 150 | </span><span·class="p"·data-group-id=" | 150 | </span><span·class="p"·data-group-id="3262645747-4">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">TRef</span><span·class="p"·data-group-id="3262645747-4">}</span><span·class="w"> |
| 151 | </span><span·class="n">Hello</span><span·class="w">·</span><span·class="n">World</span><span·class="o">!</span></code></pre><p><em>Example·2</em></p><p>The·following·example·shows·a·process·performing·a·certain·action,·and·if·this | 151 | </span><span·class="n">Hello</span><span·class="w">·</span><span·class="n">World</span><span·class="o">!</span></code></pre><p><em>Example·2</em></p><p>The·following·example·shows·a·process·performing·a·certain·action,·and·if·this |
| 152 | action·is·not·completed·within·a·certain·limit,·the·process·is·killed:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Pid</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">spawn</span><span·class="p"·data-group-id=" | 152 | action·is·not·completed·within·a·certain·limit,·the·process·is·killed:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Pid</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">spawn</span><span·class="p"·data-group-id="6009266307-1">(</span><span·class="ss">mod</span><span·class="p">,</span><span·class="w">·</span><span·class="k">fun</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6009266307-2">[</span><span·class="ss">foo</span><span[·...·truncated·by·diffoscope;·len:·163,·SHA:·e8f9272e8db7efd102640382422a3875eaab309f1b4b033f424aad0063bca76e·...·]7-1">)</span><span·class="p">,</span><span·class="w"> |
| 153 | </span><span·class="c1">%%·If·pid·is·not·finished·in·10·seconds,·kill·him</span><span·class="w"> | 153 | </span><span·class="c1">%%·If·pid·is·not·finished·in·10·seconds,·kill·him</span><span·class="w"> |
| 154 | </span><span·class="p"·data-group-id=" | 154 | </span><span·class="p"·data-group-id="6009266307-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">R</span><span·class="p"·data-group-id="6009266307-3">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class[·...·truncated·by·diffoscope;·len:·459,·SHA:·218b073e6ea9dda505d47162ae6999893dbe03225a4922ef3252b5eb1504ffee·...·]7-4">)</span><span·class="p">,</span><span·class="w"> |
| 155 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 155 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 156 | </span><span·class="c1">%%·We·change·our·mind...</span><span·class="w"> | 156 | </span><span·class="c1">%%·We·change·our·mind...</span><span·class="w"> |
| 157 | </span><span·class="nc">timer</span><span·class="p">:</span><span·class="nf">cancel</span><span·class="p"·data-group-id=" | 157 | </span><span·class="nc">timer</span><span·class="p">:</span><span·class="nf">cancel</span><span·class="p"·data-group-id="6009266307-6">(</span><span·class="n">R</span><span·class="p"·data-group-id="6009266307-6">)</span><span·class="p">,</span><span·class="w"> |
| 158 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><h2·id="module-notes"·class="section-heading"> | 158 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><h2·id="module-notes"·class="section-heading"> |
| 159 | ··<a·href="#module-notes"·class="hover-link"> | 159 | ··<a·href="#module-notes"·class="hover-link"> |
| 160 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 160 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 161 | ··</a> | 161 | ··</a> |
| 162 | ··<span·class="text">Notes</span> | 162 | ··<span·class="text">Notes</span> |
| 163 | </h2> | 163 | </h2> |
| 164 | <p>A·timer·can·always·be·removed·by·calling·<a·href="#cancel/1"><code·class="inline">cancel/1</code></a>.</p><p>An·interval·timer,·that·is,·a·timer·created·by·evaluating·any·of·the·functions | 164 | <p>A·timer·can·always·be·removed·by·calling·<a·href="#cancel/1"><code·class="inline">cancel/1</code></a>.</p><p>An·interval·timer,·that·is,·a·timer·created·by·evaluating·any·of·the·functions |
| Offset 177, 28 lines modified | Offset 177, 28 lines modified | ||
| 177 | process,·and·therefore·calls·to·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#self/0"><code·class="inline">self/0</code></a>·in·those·functions·will·return·the·Pid | 177 | process,·and·therefore·calls·to·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#self/0"><code·class="inline">self/0</code></a>·in·those·functions·will·return·the·Pid |
| 178 | of·this·process,·which·is·different·from·the·process·that·called | 178 | of·this·process,·which·is·different·from·the·process·that·called |
| 179 | <code·class="inline">timer:apply_*</code>.</p><p><em>Example</em></p><p>In·the·following·example,·the·intention·is·to·set·a·timer·to·execute·a·function | 179 | <code·class="inline">timer:apply_*</code>.</p><p><em>Example</em></p><p>In·the·following·example,·the·intention·is·to·set·a·timer·to·execute·a·function |
| 180 | after·1·second,·which·performs·a·fictional·task,·and·then·wants·to·inform·the | 180 | after·1·second,·which·performs·a·fictional·task,·and·then·wants·to·inform·the |
| 181 | process·which·set·the·timer·about·its·completion,·by·sending·it·a·<code·class="inline">done</code> | 181 | process·which·set·the·timer·about·its·completion,·by·sending·it·a·<code·class="inline">done</code> |
| 182 | message.</p><p>Using·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#self/0"><code·class="inline">self/0</code></a>·<em>inside</em>·the·timed·function,·the·code·below·does·not·work·as | 182 | message.</p><p>Using·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#self/0"><code·class="inline">self/0</code></a>·<em>inside</em>·the·timed·function,·the·code·below·does·not·work·as |
| 183 | intended.·The·task·gets·done,·but·the·<code·class="inline">done</code>·message·gets·sent·to·the·wrong | 183 | intended.·The·task·gets·done,·but·the·<code·class="inline">done</code>·message·gets·sent·to·the·wrong |
| 184 | process·and·is·lost.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">timer</span><span·class="p">:</span><span·class="nf">apply_after</span><span·class="p"·data-group-id=" | 184 | process·and·is·lost.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">timer</span><span·class="p">:</span><span·class="nf">apply_after</span><span·class="p"·data-group-id="6210234590-1">(</span><span·class="mi">1000</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="6210234590-2">(</span><span·class="p"·data-group-id="6210234590-2">)</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·566,·SHA:·5f5f609c5a813cdc1acf9eba52b38fd9cb2af87da93ea62aa27083f4d4a1ed77·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 185 | </span><span·class="p"·data-group-id=" | 185 | </span><span·class="p"·data-group-id="6210234590-5">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">TRef</span><span·class="p"·data-group-id="6210234590-5">}</span><span·class="gp·unselectable"> |
| 186 | 2>·</span><span·class="k">receive</span><span·class="w">·</span><span·class="ss">done</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">done</span><span·class="w">·</span><span·class="k">after</span><span·class="w">·</span><span·class="mi">5000</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">timeout</span><span·class="w">·</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 186 | 2>·</span><span·class="k">receive</span><span·class="w">·</span><span·class="ss">done</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">done</span><span·class="w">·</span><span·class="k">after</span><span·class="w">·</span><span·class="mi">5000</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">timeout</span><span·class="w">·</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 187 | </span><span·class="c1">%%·...·5s·pass...</span><span·class="w"> | 187 | </span><span·class="c1">%%·...·5s·pass...</span><span·class="w"> |
| 188 | </span><span·class="ss">timeout</span></code></pre><p>The·code·below·calls·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#self/0"><code·class="inline">self/0</code></a>·in·the·process·which·sets·the·timer·and·assigns·it | 188 | </span><span·class="ss">timeout</span></code></pre><p>The·code·below·calls·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#self/0"><code·class="inline">self/0</code></a>·in·the·process·which·sets·the·timer·and·assigns·it |
| 189 | to·a·variable,·which·is·then·used·in·the·function·to·send·the·<code·class="inline">done</code>·message·to, | 189 | to·a·variable,·which·is·then·used·in·the·function·to·send·the·<code·class="inline">done</code>·message·to, |
| 190 | and·so·works·as·intended.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">Target</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id=" | 190 | and·so·works·as·intended.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="n">Target</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="3622445844-1">(</span><span·class="p"·data-group-id="3622445844-1">)</span><span·class="w"> |
| 191 | </span><span·class="o"><</span><span·class="mf">0.82</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="gp·unselectable"> | 191 | </span><span·class="o"><</span><span·class="mf">0.82</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="gp·unselectable"> |
| 192 | 2>·</span><span·class="nc">timer</span><span·class="p">:</span><span·class="nf">apply_after</span><span·class="p"·data-group-id=" | 192 | 2>·</span><span·class="nc">timer</span><span·class="p">:</span><span·class="nf">apply_after</span><span·class="p"·data-group-id="3622445844-2">(</span><span·class="mi">1000</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="3622445844-3">(</span><span·class="p"·data-group-id="3622445844-3">)</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·461,·SHA:·a56dc0cc8bb72d1231975bdc8dd9d166fd4df18bd9f61f3b405895997e19bb75·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 193 | </span><span·class="p"·data-group-id=" | 193 | </span><span·class="p"·data-group-id="3622445844-5">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">TRef</span><span·class="p"·data-group-id="3622445844-5">}</span><span·class="gp·unselectable"> |
| 194 | 3>·</span><span·class="k">receive</span><span·class="w">·</span><span·class="ss">done</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">done</span><span·class="w">·</span><span·class="k">after</span><span·class="w">·</span><span·class="mi">5000</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">timeout</span><span·class="w">·</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 194 | 3>·</span><span·class="k">receive</span><span·class="w">·</span><span·class="ss">done</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">done</span><span·class="w">·</span><span·class="k">after</span><span·class="w">·</span><span·class="mi">5000</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">timeout</span><span·class="w">·</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 195 | </span><span·class="c1">%%·...·1s·passes...</span><span·class="w"> | 195 | </span><span·class="c1">%%·...·1s·passes...</span><span·class="w"> |
| 196 | </span><span·class="ss">done</span></code></pre><p>Another·option·is·to·pass·the·message·target·as·a·parameter·to·the·function.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">timer</span><span·class="p">:</span><span·class="nf">apply_after</span><span·class="p"·data-group-id=" | 196 | </span><span·class="ss">done</span></code></pre><p>Another·option·is·to·pass·the·message·target·as·a·parameter·to·the·function.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">timer</span><span·class="p">:</span><span·class="nf">apply_after</span><span·class="p"·data-group-id="1617772171-1">(</span><span·class="mi">1000</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="1617772171-2">(</span><span·class="n">Target</span><span·class="p"·data-group-id="1617772171-2">)</s[·...·truncated·by·diffoscope;·len:·778,·SHA:·f43fd89b394287cec35746c561199d8229ced89844d0dd8fde20bd23f29db7b5·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 197 | </span><span·class="p"·data-group-id=" | 197 | </span><span·class="p"·data-group-id="1617772171-6">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">TRef</span><span·class="p"·data-group-id="1617772171-6">}</span><span·class="gp·unselectable"> |
| 198 | 2>·</span><span·class="k">receive</span><span·class="w">·</span><span·class="ss">done</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">done</span><span·class="w">·</span><span·class="k">after</span><span·class="w">·</span><span·class="mi">5000</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">timeout</span><span·class="w">·</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 198 | 2>·</span><span·class="k">receive</span><span·class="w">·</span><span·class="ss">done</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">done</span><span·class="w">·</span><span·class="k">after</span><span·class="w">·</span><span·class="mi">5000</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">timeout</span><span·class="w">·</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 199 | </span><span·class="c1">%%·...·1s·passes...</span><span·class="w"> | 199 | </span><span·class="c1">%%·...·1s·passes...</span><span·class="w"> |
| 200 | </span><span·class="ss">done</span></code></pre> | 200 | </span><span·class="ss">done</span></code></pre> |
| 201 | ····</section> | 201 | ····</section> |
| 202 | </div> | 202 | </div> |
| Offset 1031, 21 lines modified | Offset 1031, 21 lines modified | ||
| 1031 | binaries·in·other·ways·are·split·on·non-UTF·character·boundaries.·An | 1031 | binaries·in·other·ways·are·split·on·non-UTF·character·boundaries.·An |
| 1032 | <code·class="inline">incomplete</code>·tuple·is·then·returned·instead·of·the·<code·class="inline">error</code>·tuple.·It·consists·of | 1032 | <code·class="inline">incomplete</code>·tuple·is·then·returned·instead·of·the·<code·class="inline">error</code>·tuple.·It·consists·of |
| 1033 | the·same·parts·as·the·<code·class="inline">error</code>·tuple,·but·the·tag·is·<code·class="inline">incomplete</code>·instead·of | 1033 | the·same·parts·as·the·<code·class="inline">error</code>·tuple,·but·the·tag·is·<code·class="inline">incomplete</code>·instead·of |
| 1034 | <code·class="inline">error</code>·and·the·last·element·is·always·guaranteed·to·be·a·binary·consisting·of | 1034 | <code·class="inline">error</code>·and·the·last·element·is·always·guaranteed·to·be·a·binary·consisting·of |
| 1035 | the·first·part·of·a·(so·far)·valid·UTF·character.</p><p>If·one·UTF·character·is·split·over·two·consecutive·binaries·in·the·<code·class="inline">Data</code>,·the | 1035 | the·first·part·of·a·(so·far)·valid·UTF·character.</p><p>If·one·UTF·character·is·split·over·two·consecutive·binaries·in·the·<code·class="inline">Data</code>,·the |
| 1036 | conversion·succeeds.·This·means·that·a·character·can·be·decoded·from·a·range·of | 1036 | conversion·succeeds.·This·means·that·a·character·can·be·decoded·from·a·range·of |
| 1037 | binaries·as·long·as·the·whole·range·is·specified·as·input·without·errors | 1037 | binaries·as·long·as·the·whole·range·is·specified·as·input·without·errors |
| 1038 | occurring.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">decode_data</span><span·class="p"·data-group-id="9 | 1038 | occurring.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">decode_data</span><span·class="p"·data-group-id="9324323298-1">(</span><span·class="n">Data</span><span·class="p"·data-group-id="9324323298-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1039 | ···</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">unicode</span><span·class="p">:</span><span·class="nf">characters_to_list</span><span·class="p"·data-group-id="9 | 1039 | ···</span><span·class="k">case</span><span·class="w">·</span><span·class="nc">unicode</span><span·class="p">:</span><span·class="nf">characters_to_list</span><span·class="p"·data-group-id="9324323298-2">(</span><span·class="n">Data</span><span·class="p">,</span><span·class="ss">unicode</span><span·class="p"·data-group-id="9324323298-2">)</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 1040 | ······</span><span·class="p"·data-group-id="9 | 1040 | ······</span><span·class="p"·data-group-id="9324323298-3">{</span><span·class="ss">incomplete</span><span·class="p">,</span><span·class="n">Encoded</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Rest</span><span·class="p"·data-group-id="9324323298-3">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1041 | ············</span><span·class="n">More</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">get_some_more_data</span><span·class="p"·data-group-id="9 | 1041 | ············</span><span·class="n">More</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">get_some_more_data</span><span·class="p"·data-group-id="9324323298-4">(</span><span·class="p"·data-group-id="9324323298-4">)</span><span·class="p">,</span><span·class="w"> |
| 1042 | ············</span><span·class="n">Encoded</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="nf">decode_data</span><span·class="p"·data-group-id="9 | 1042 | ············</span><span·class="n">Encoded</span><span·class="w">·</span><span·class="o">++</span><span·class="w">·</span><span·class="nf">decode_data</span><span·class="p"·data-group-id="9324323298-5">(</span><span·class="p"·data-group-id="9324323298-6">[</span><span·class="n">Rest</span><span·class="p">,</span><span·class="w">·</span><span·class="n">More</span><span·class="p"·data-group-id="9324323298-6">]</span><span·class="p"·data-group-[·...·truncated·by·diffoscope;·len:·14,·SHA:·0ad4cdff637383bfe983ef8ea9037467afbbbfa439eedccf4ad8f588a79b9c4d·...·]-5">)</span><span·class="p">;</span><span·class="w"> |
| 1043 | ······</span><span·class="p"·data-group-id="9 | 1043 | ······</span><span·class="p"·data-group-id="9324323298-7">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="n">Encoded</span><span·class="p">,</span><span·class="n">Rest</span><span·class="p"·data-group-id="9324323298-7">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1044 | ············</span><span·class="nf">handle_error</span><span·class="p"·data-group-id="9 | 1044 | ············</span><span·class="nf">handle_error</span><span·class="p"·data-group-id="9324323298-8">(</span><span·class="n">Encoded</span><span·class="p">,</span><span·class="n">Rest</span><span·class="p"·data-group-id="9324323298-8">)</span><span·class="p">;</span><span·class="w"> |
| 1045 | ······</span><span·class="n">List</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 1045 | ······</span><span·class="n">List</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 1046 | ············</span><span·class="n">List</span><span·class="w"> | 1046 | ············</span><span·class="n">List</span><span·class="w"> |
| 1047 | ···</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>However,·bit·strings·that·are·not·whole·bytes·are·not·allowed,·so·a·UTF | 1047 | ···</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>However,·bit·strings·that·are·not·whole·bytes·are·not·allowed,·so·a·UTF |
| 1048 | character·must·be·split·along·8-bit·boundaries·to·ever·be·decoded.</p><p>A·<code·class="inline">badarg</code>·exception·is·thrown·for·the·following·cases:</p><ul><li>Any·parameters·are·of·the·wrong·type.</li><li>The·list·structure·is·invalid·(a·number·as·tail).</li><li>The·binaries·do·not·contain·whole·bytes·(bit·strings).</li></ul> | 1048 | character·must·be·split·along·8-bit·boundaries·to·ever·be·decoded.</p><p>A·<code·class="inline">badarg</code>·exception·is·thrown·for·the·following·cases:</p><ul><li>Any·parameters·are·of·the·wrong·type.</li><li>The·list·structure·is·invalid·(a·number·as·tail).</li><li>The·binaries·do·not·contain·whole·bytes·(bit·strings).</li></ul> |
| 1049 | ··</section> | 1049 | ··</section> |
| 1050 | </section> | 1050 | </section> |
| 1051 | <section·class="detail"·id="characters_to_nfc_binary/1"> | 1051 | <section·class="detail"·id="characters_to_nfc_binary/1"> |
| Offset 1070, 16 lines modified | Offset 1070, 16 lines modified | ||
| 1070 | ······<div·class="specs"> | 1070 | ······<div·class="specs"> |
| 1071 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·characters_to_nfc_binary(<a·href="#t:chardata/0">chardata</a>())·->·<a·href="#t:unicode_binary/0">unicode_binary</a>()·|·{error,·<a·href="#t:unicode_binary/0">unicode_binary</a>(),·<a·href="#t:chardata/0">chardata</a>()}.</pre> | 1071 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·characters_to_nfc_binary(<a·href="#t:chardata/0">chardata</a>())·->·<a·href="#t:unicode_binary/0">unicode_binary</a>()·|·{error,·<a·href="#t:unicode_binary/0">unicode_binary</a>(),·<a·href="#t:chardata/0">chardata</a>()}.</pre> |
| 1072 | ······</div> | 1072 | ······</div> |
| 1073 | <p>Converts·a·possibly·deep·list·of·characters·and·binaries·into·a·Normalized·Form | 1073 | <p>Converts·a·possibly·deep·list·of·characters·and·binaries·into·a·Normalized·Form |
| 1074 | of·canonical·equivalent·Composed·characters·according·to·the·Unicode·standard.</p><p>Any·binaries·in·the·input·must·be·encoded·with·utf8·encoding.</p><p>The·result·is·an·utf8·encoded·binary.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">4>·</span><span·class="nc">unicode</span><span·class="p">:</span><span·class="nf">characters_to_nfc_binary</span><span·class="p"·data-group-id=" | 1074 | of·canonical·equivalent·Composed·characters·according·to·the·Unicode·standard.</p><p>Any·binaries·in·the·input·must·be·encoded·with·utf8·encoding.</p><p>The·result·is·an·utf8·encoded·binary.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">4>·</span><span·class="nc">unicode</span><span·class="p">:</span><span·class="nf">characters_to_nfc_binary</span><span·class="p"·data-group-id="0659277100-1">(</span><span·class="p"·data-group-id="0659277100-2">[</span><span·class="p"·data-group-id="0659277100-3"><<</span><span·class="s">"abc..a"</span><span·class="p"·data-group-id="0659277100-3">>></span><span·class="p">,</s[·...·truncated·by·diffoscope;·len:·645,·SHA:·1f60bcffa7ccd0984dd04ef51cb8cb5ef47600fec18332f6510554521f3303aa·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 1075 | </span><span·class="p"·data-group-id=" | 1075 | </span><span·class="p"·data-group-id="0659277100-7"><<</span><span·class="s">"abc..åäö"</span><span·class="o">/</span><span·class="ss">utf8</span><span·class="p"·data-group-id="0659277100-7">>></span></code></pre> |
| 1076 | ··</section> | 1076 | ··</section> |
| 1077 | </section> | 1077 | </section> |
| 1078 | <section·class="detail"·id="characters_to_nfc_list/1"> | 1078 | <section·class="detail"·id="characters_to_nfc_list/1"> |
| 1079 | ··<div·class="detail-header"> | 1079 | ··<div·class="detail-header"> |
| 1080 | ····<a·href="#characters_to_nfc_list/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1080 | ····<a·href="#characters_to_nfc_list/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1081 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1081 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 1100, 15 lines modified | Offset 1100, 15 lines modified | ||
| 1100 | ······<div·class="specs"> | 1100 | ······<div·class="specs"> |
| 1101 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·characters_to_nfc_list(<a·href="#t:chardata/0">chardata</a>())·->·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:char/0">char</a>()]·|·{error,·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:char/0">char</a>()],·<a·href="#t:chardata/0">chardata</a>()}.</pre> | 1101 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·characters_to_nfc_list(<a·href="#t:chardata/0">chardata</a>())·->·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:char/0">char</a>()]·|·{error,·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:char/0">char</a>()],·<a·href="#t:chardata/0">chardata</a>()}.</pre> |
| 1102 | ······</div> | 1102 | ······</div> |
| 1103 | <p>Converts·a·possibly·deep·list·of·characters·and·binaries·into·a·Normalized·Form | 1103 | <p>Converts·a·possibly·deep·list·of·characters·and·binaries·into·a·Normalized·Form |
| 1104 | of·canonical·equivalent·Composed·characters·according·to·the·Unicode·standard.</p><p>Any·binaries·in·the·input·must·be·encoded·with·utf8·encoding.</p><p>The·result·is·a·list·of·characters.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="nc">unicode</span><span·class="p">:</span><span·class="nf">characters_to_nfc_list</span><span·class="p"·data-group-id=" | 1104 | of·canonical·equivalent·Composed·characters·according·to·the·Unicode·standard.</p><p>Any·binaries·in·the·input·must·be·encoded·with·utf8·encoding.</p><p>The·result·is·a·list·of·characters.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="nc">unicode</span><span·class="p">:</span><span·class="nf">characters_to_nfc_list</span><span·class="p"·data-group-id="4669144268-1">(</span><span·class="p"·data-group-id="4669144268-2">[</span><span·class="p"·data-group-id="4669144268-3"><<</span><span·class="s">"abc..a"</span><span·class="p"·data-group-id="4669144268-3">>></span><span·class="p">,</s[·...·truncated·by·diffoscope;·len:·645,·SHA:·35a1ae2677209cd7b19dfaedcbf86d540c8636c27a99a654d6c2122d7c4225a5·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 1105 | </span><span·class="s">"abc..åäö"</span></code></pre> | 1105 | </span><span·class="s">"abc..åäö"</span></code></pre> |
| 1106 | ··</section> | 1106 | ··</section> |
| 1107 | </section> | 1107 | </section> |
| 1108 | <section·class="detail"·id="characters_to_nfd_binary/1"> | 1108 | <section·class="detail"·id="characters_to_nfd_binary/1"> |
| 1109 | ··<div·class="detail-header"> | 1109 | ··<div·class="detail-header"> |
| 1110 | ····<a·href="#characters_to_nfd_binary/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1110 | ····<a·href="#characters_to_nfd_binary/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 1130, 16 lines modified | Offset 1130, 16 lines modified | ||
| 1130 | ······<div·class="specs"> | 1130 | ······<div·class="specs"> |
| 1131 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·characters_to_nfd_binary(<a·href="#t:chardata/0">chardata</a>())·->·<a·href="#t:unicode_binary/0">unicode_binary</a>()·|·{error,·<a·href="#t:unicode_binary/0">unicode_binary</a>(),·<a·href="#t:chardata/0">chardata</a>()}.</pre> | 1131 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·characters_to_nfd_binary(<a·href="#t:chardata/0">chardata</a>())·->·<a·href="#t:unicode_binary/0">unicode_binary</a>()·|·{error,·<a·href="#t:unicode_binary/0">unicode_binary</a>(),·<a·href="#t:chardata/0">chardata</a>()}.</pre> |
| 1132 | ······</div> | 1132 | ······</div> |
| 1133 | <p>Converts·a·possibly·deep·list·of·characters·and·binaries·into·a·Normalized·Form | 1133 | <p>Converts·a·possibly·deep·list·of·characters·and·binaries·into·a·Normalized·Form |
| 1134 | of·canonical·equivalent·Decomposed·characters·according·to·the·Unicode·standard.</p><p>Any·binaries·in·the·input·must·be·encoded·with·utf8·encoding.</p><p>The·result·is·an·utf8·encoded·binary.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">unicode</span><span·class="p">:</span><span·class="nf">characters_to_nfd_binary</span><span·class="p"·data-group-id=" | 1134 | of·canonical·equivalent·Decomposed·characters·according·to·the·Unicode·standard.</p><p>Any·binaries·in·the·input·must·be·encoded·with·utf8·encoding.</p><p>The·result·is·an·utf8·encoded·binary.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">unicode</span><span·class="p">:</span><span·class="nf">characters_to_nfd_binary</span><span·class="p"·data-group-id="6365304061-1">(</span><span·class="s">"abc..åäö"</span><span·class="p"·data-group-id="6365304061-1">)</span><span·class="p">.</span><span·class="w"> |
| 1135 | </span><span·class="p"·data-group-id=" | 1135 | </span><span·class="p"·data-group-id="6365304061-2"><<</span><span·class="mi">97</span><span·class="p">,</span><span·class="mi">98</span><span·class="p">,</span><span·class="mi">99</span><span·class="p">,</span><span·class="mi">46</span><span·class="p">,</span><span·class="mi">46</span><[·...·truncated·by·diffoscope;·len:·496,·SHA:·df11f3a62d407848db3bf4a6ce3cac8dd112469317f03886adaf4a6b4c40e4e4·...·]1-2">>></span></code></pre> |
| 1136 | ··</section> | 1136 | ··</section> |
| 1137 | </section> | 1137 | </section> |
| 1138 | <section·class="detail"·id="characters_to_nfd_list/1"> | 1138 | <section·class="detail"·id="characters_to_nfd_list/1"> |
| 1139 | ··<div·class="detail-header"> | 1139 | ··<div·class="detail-header"> |
| 1140 | ····<a·href="#characters_to_nfd_list/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1140 | ····<a·href="#characters_to_nfd_list/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1141 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1141 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 1160, 16 lines modified | Offset 1160, 16 lines modified | ||
| 1160 | ······<div·class="specs"> | 1160 | ······<div·class="specs"> |
| 1161 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·characters_to_nfd_list(<a·href="#t:chardata/0">chardata</a>())·->·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:char/0">char</a>()]·|·{error,·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:char/0">char</a>()],·<a·href="#t:chardata/0">chardata</a>()}.</pre> | 1161 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·characters_to_nfd_list(<a·href="#t:chardata/0">chardata</a>())·->·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:char/0">char</a>()]·|·{error,·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:char/0">char</a>()],·<a·href="#t:chardata/0">chardata</a>()}.</pre> |
| 1162 | ······</div> | 1162 | ······</div> |
| 1163 | <p>Converts·a·possibly·deep·list·of·characters·and·binaries·into·a·Normalized·Form | 1163 | <p>Converts·a·possibly·deep·list·of·characters·and·binaries·into·a·Normalized·Form |
| 1164 | of·canonical·equivalent·Decomposed·characters·according·to·the·Unicode·standard.</p><p>Any·binaries·in·the·input·must·be·encoded·with·utf8·encoding.</p><p>The·result·is·a·list·of·characters.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">unicode</span><span·class="p">:</span><span·class="nf">characters_to_nfd_list</span><span·class="p"·data-group-id=" | 1164 | of·canonical·equivalent·Decomposed·characters·according·to·the·Unicode·standard.</p><p>Any·binaries·in·the·input·must·be·encoded·with·utf8·encoding.</p><p>The·result·is·a·list·of·characters.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">unicode</span><span·class="p">:</span><span·class="nf">characters_to_nfd_list</span><span·class="p"·data-group-id="3602537862-1">(</span><span·class="s">"abc..åäö"</span><span·class="p"·data-group-id="3602537862-1">)</span><span·class="p">.</span><span·class="w"> |
| 1165 | </span><span·class="p"·data-group-id=" | 1165 | </span><span·class="p"·data-group-id="3602537862-2">[</span><span·class="mi">97</span><span·class="p">,</span><span·class="mi">98</span><span·class="p">,</span><span·class="mi">99</span><span·class="p">,</span><span·class="mi">46</span><span·class="p">,</span><span·class="mi">46</span><span·cl[·...·truncated·by·diffoscope;·len:·337,·SHA:·332448aa00eb7ff81428696ccc826c63bd5860f7ac2b2c5a4455ecda72ddc1bf·...·]-2">]</span></code></pre> |
| 1166 | ··</section> | 1166 | ··</section> |
| 1167 | </section> | 1167 | </section> |
| 1168 | <section·class="detail"·id="characters_to_nfkc_binary/1"> | 1168 | <section·class="detail"·id="characters_to_nfkc_binary/1"> |
| 1169 | ··<div·class="detail-header"> | 1169 | ··<div·class="detail-header"> |
| 1170 | ····<a·href="#characters_to_nfkc_binary/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1170 | ····<a·href="#characters_to_nfkc_binary/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1171 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1171 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 1190, 16 lines modified | Offset 1190, 16 lines modified | ||
| 1190 | ······<div·class="specs"> | 1190 | ······<div·class="specs"> |
| 1191 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·characters_to_nfkc_binary(<a·href="#t:chardata/0">chardata</a>())·->·<a·href="#t:unicode_binary/0">unicode_binary</a>()·|·{error,·<a·href="#t:unicode_binary/0">unicode_binary</a>(),·<a·href="#t:chardata/0">chardata</a>()}.</pre> | 1191 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·characters_to_nfkc_binary(<a·href="#t:chardata/0">chardata</a>())·->·<a·href="#t:unicode_binary/0">unicode_binary</a>()·|·{error,·<a·href="#t:unicode_binary/0">unicode_binary</a>(),·<a·href="#t:chardata/0">chardata</a>()}.</pre> |
| 1192 | ······</div> | 1192 | ······</div> |
| 1193 | <p>Converts·a·possibly·deep·list·of·characters·and·binaries·into·a·Normalized·Form | 1193 | <p>Converts·a·possibly·deep·list·of·characters·and·binaries·into·a·Normalized·Form |
| 1194 | of·compatibly·equivalent·Composed·characters·according·to·the·Unicode·standard.</p><p>Any·binaries·in·the·input·must·be·encoded·with·utf8·encoding.</p><p>The·result·is·an·utf8·encoded·binary.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">4>·</span><span·class="nc">unicode</span><span·class="p">:</span><span·class="nf">characters_to_nfkc_binary</span><span·class="p"·data-group-id=" | 1194 | of·compatibly·equivalent·Composed·characters·according·to·the·Unicode·standard.</p><p>Any·binaries·in·the·input·must·be·encoded·with·utf8·encoding.</p><p>The·result·is·an·utf8·encoded·binary.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">4>·</span><span·class="nc">unicode</span><span·class="p">:</span><span·class="nf">characters_to_nfkc_binary</span><span·class="p"·data-group-id="5985796124-1">(</span><span·class="p"·data-group-id="5985796124-2">[</span><span·class="p"·data-group-id="5985796124-3"><<</span><span·class="s">"abc..a"</span><span·class="p"·data-group-id="5985796124-3">>></span><span·class="p">,</s[·...·truncated·by·diffoscope;·len:·857,·SHA:·e051e3932b11853dd114a19972261574145d63c73c946df73ca19139f7bfb3bf·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 1195 | </span><span·class="p"·data-group-id=" | 1195 | </span><span·class="p"·data-group-id="5985796124-8"><<</span><span·class="s">"abc..åäö32"</span><span·class="o">/</span><span·class="ss">utf8</span><span·class="p"·data-group-id="5985796124-8">>></span></code></pre> |
| 1196 | ··</section> | 1196 | ··</section> |
| 1197 | </section> | 1197 | </section> |
| 1198 | <section·class="detail"·id="characters_to_nfkc_list/1"> | 1198 | <section·class="detail"·id="characters_to_nfkc_list/1"> |
| 1199 | ··<div·class="detail-header"> | 1199 | ··<div·class="detail-header"> |
| 1200 | ····<a·href="#characters_to_nfkc_list/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1200 | ····<a·href="#characters_to_nfkc_list/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1201 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1201 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 1220, 15 lines modified | Offset 1220, 15 lines modified | ||
| 1220 | ······<div·class="specs"> | 1220 | ······<div·class="specs"> |
| 1221 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·characters_to_nfkc_list(<a·href="#t:chardata/0">chardata</a>())·->·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:char/0">char</a>()]·|·{error,·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:char/0">char</a>()],·<a·href="#t:chardata/0">chardata</a>()}.</pre> | 1221 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·characters_to_nfkc_list(<a·href="#t:chardata/0">chardata</a>())·->·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:char/0">char</a>()]·|·{error,·[<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:char/0">char</a>()],·<a·href="#t:chardata/0">chardata</a>()}.</pre> |
| 1222 | ······</div> | 1222 | ······</div> |
| 1223 | <p>Converts·a·possibly·deep·list·of·characters·and·binaries·into·a·Normalized·Form | 1223 | <p>Converts·a·possibly·deep·list·of·characters·and·binaries·into·a·Normalized·Form |
| 1224 | of·compatibly·equivalent·Composed·characters·according·to·the·Unicode·standard.</p><p>Any·binaries·in·the·input·must·be·encoded·with·utf8·encoding.</p><p>The·result·is·a·list·of·characters.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="nc">unicode</span><span·class="p">:</span><span·class="nf">characters_to_nfkc_list</span><span·class="p"·data-group-id="9 | 1224 | of·compatibly·equivalent·Composed·characters·according·to·the·Unicode·standard.</p><p>Any·binaries·in·the·input·must·be·encoded·with·utf8·encoding.</p><p>The·result·is·a·list·of·characters.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="nc">unicode</span><span·class="p">:</span><span·class="nf">characters_to_nfkc_list</span><span·class="p"·data-group-id="2934539090-1">(</span><span·class="p"·data-group-id="2934539090-2">[</span><span·class="p"·data-group-id="2934539090-3"><<</span><span·class="s">"abc..a"</span><span·class="p"·data-group-id="2934539090-3">>></span><span·class="p">,</s[·...·truncated·by·diffoscope;·len:·857,·SHA:·619fab2419e005614076c5546e0dc153f3d6cb3f5aabc369f1d4cb8ebdfca717·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 1225 | </span><span·class="s">"abc..åäö32"</span></code></pre> | 1225 | </span><span·class="s">"abc..åäö32"</span></code></pre> |
| 1226 | ··</section> | 1226 | ··</section> |
| 1227 | </section> | 1227 | </section> |
| 1228 | <section·class="detail"·id="characters_to_nfkd_binary/1"> | 1228 | <section·class="detail"·id="characters_to_nfkd_binary/1"> |
| 1229 | ··<div·class="detail-header"> | 1229 | ··<div·class="detail-header"> |
| 1230 | ····<a·href="#characters_to_nfkd_binary/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1230 | ····<a·href="#characters_to_nfkd_binary/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 1251, 16 lines modified | Offset 1251, 16 lines modified | ||
| 1251 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·characters_to_nfkd_binary(<a·href="#t:chardata/0">chardata</a>())·->·<a·href="#t:unicode_binary/0">unicode_binary</a>()·|·{error,·<a·href="#t:unicode_binary/0">unicode_binary</a>(),·<a·href="#t:chardata/0">chardata</a>()}.</pre> | 1251 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·characters_to_nfkd_binary(<a·href="#t:chardata/0">chardata</a>())·->·<a·href="#t:unicode_binary/0">unicode_binary</a>()·|·{error,·<a·href="#t:unicode_binary/0">unicode_binary</a>(),·<a·href="#t:chardata/0">chardata</a>()}.</pre> |
| 1252 | ······</div> | 1252 | ······</div> |
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| Offset 335, 28 lines modified | Offset 335, 28 lines modified | ||
| 335 | communicating·externally.·Functions·and·bit·syntax·exist·to·encode·and·decode | 335 | communicating·externally.·Functions·and·bit·syntax·exist·to·encode·and·decode |
| 336 | both·UTF-8,·UTF-16,·and·UTF-32·in·binaries.·However,·library·functions·dealing | 336 | both·UTF-8,·UTF-16,·and·UTF-32·in·binaries.·However,·library·functions·dealing |
| 337 | with·binaries·and·Unicode·in·general·only·deal·with·the·default·encoding.</p><p>Character·data·can·be·combined·from·many·sources,·sometimes·available·in·a·mix | 337 | with·binaries·and·Unicode·in·general·only·deal·with·the·default·encoding.</p><p>Character·data·can·be·combined·from·many·sources,·sometimes·available·in·a·mix |
| 338 | of·strings·and·binaries.·Erlang·has·for·long·had·the·concept·of·<code·class="inline">iodata</code>·or | 338 | of·strings·and·binaries.·Erlang·has·for·long·had·the·concept·of·<code·class="inline">iodata</code>·or |
| 339 | <code·class="inline">iolist</code>s,·where·binaries·and·lists·can·be·combined·to·represent·a·sequence·of | 339 | <code·class="inline">iolist</code>s,·where·binaries·and·lists·can·be·combined·to·represent·a·sequence·of |
| 340 | bytes.·In·the·same·way,·the·Unicode-aware·modules·often·allow·for·combinations | 340 | bytes.·In·the·same·way,·the·Unicode-aware·modules·often·allow·for·combinations |
| 341 | of·binaries·and·lists,·where·the·binaries·have·characters·encoded·in·UTF-8·and | 341 | of·binaries·and·lists,·where·the·binaries·have·characters·encoded·in·UTF-8·and |
| 342 | the·lists·contain·such·binaries·or·numbers·representing·Unicode·code·points:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">unicode_binary</span><span·class="p"·data-group-id=" | 342 | the·lists·contain·such·binaries·or·numbers·representing·Unicode·code·points:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">unicode_binary</span><span·class="p"·data-group-id="7638075136-1">(</span><span·class="p"·data-group-id="7638075136-1">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">binary</span><span·class="p"·data-group-id="7638075136-2">(</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·15,·SHA:·8d7976129821845c80ad7a8db636aeb1643f2f26f8dfffca8990c1afd227602b·...·]-2">)</span><span·class="w">·</span><span·class="ss">with</span><span·class="w">·</span><span·class="ss">characters</span><span·class="w">·</span><span·class="ss">encoded</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="n">UTF</span><span·class="o">-</span><span·class="mi">8</span><span·class="w">·</span><span·class="ss">coding</span><span·class="w">·</span><span·class="ss">standard</span><span·class="w"> |
| 343 | </span><span·class="nf">chardata</span><span·class="p"·data-group-id=" | 343 | </span><span·class="nf">chardata</span><span·class="p"·data-group-id="7638075136-3">(</span><span·class="p"·data-group-id="7638075136-3">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">charlist</span><span·class="p"·data-group-id="7638075136-4">(</span><span·class="p"·data-gro[·...·truncated·by·diffoscope;·len:·233,·SHA:·2da42ea5590b42270c813e71809fa7106e53b2dbf70cb080b8be8416674b29bd·...·]-5">)</span><span·class="w"> |
| 344 | </span><span·class="nf">charlist</span><span·class="p"·data-group-id="5282825239-6">(</span><span·class="p"·data-group-id="5282825239-6">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">maybe_improper_list</span><span·class="p"·data-group-id="5282825239-7">(</span><span·class="nf">char</span><span·class="p"·data-group-id="5282825239-8">(</span><span·class="p"·data-group-id="5282825239-8">)</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="nf">unicode_binary</span><span·class="p"·data-group-id="5282825239-9">(</span><span·class="p"·data-group-id="5282825239-9">)</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="nf">charlist</span><span·class="p"·data-group-id="5282825239-10">(</span><span·class="p"·data-group-id="5282825239-10">)</span><span·class="p">,</span><span·class="w"> | ||
| 345 | 344 | </span><span·class="nf">charlist</span><span·class="p"·data-group-id="7638075136-6">(</span><span·class="p"·data-group-id="7638075136-6">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">maybe_improper_list</s[·...·truncated·by·diffoscope;·len:·659,·SHA:·21bb840fa8cf131e75063542b63afe13ff73a5bf4980f96d378273f7e404f08b·...·] | |
| 345 | ··</span><span·class="nf">unicode_binary</span><span·class="p"·data-group-id="7638075136-11">(</span><span·class="p"·data-group-id="7638075136-11">)</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="nf">nil</span><span·class="p"·data-group-id="7638075136-12">(</span><span·class="p"·data-group-id="7638075136-12">)</span><span·class="p"·data-group-id="7638075136-7">)</span></code></pre><p>The·module·<a·href="unicode.html"><code·class="inline">unicode</code></a>·even·supports·similar·mixes·with·binaries·containing | ||
| 346 | other·encodings·than·UTF-8,·but·that·is·a·special·case·to·allow·for·conversions | 346 | other·encodings·than·UTF-8,·but·that·is·a·special·case·to·allow·for·conversions |
| 347 | to·and·from·external·data:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">external_unicode_binary</span><span·class="p"·data-group-id=" | 347 | to·and·from·external·data:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">external_unicode_binary</span><span·class="p"·data-group-id="5621969586-1">(</span><span·class="p"·data-group-id="5621969586-1">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">binary</span><span·class="p"·data-group-id="5621969586-2">(</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·15,·SHA:·41daf236fe8a2a94fdc08e4bbb6659d6bf2be1496a4f55cc982fa382a6e90cdf·...·]-2">)</span><span·class="w">·</span><span·class="ss">with</span><span·class="w">·</span><span·class="ss">characters</span><span·class="w">·</span><span·class="ss">coded</span><span·class="w">·</span><span·class="ss">in</span><span·class="w">·</span><span·class="ss">a</span><span·class="w">·</span><span·class="ss">user</span><span·class="o">-</span><span·class="ss">specified</span><span·class="w"> |
| 348 | ··</span><span·class="n">Unicode</span><span·class="w">·</span><span·class="ss">encoding</span><span·class="w">·</span><span·class="ss">other</span><span·class="w">·</span><span·class="ss">than</span><span·class="w">·</span><span·class="n">UTF</span><span·class="o">-</span><span·class="mi">8</span><span·class="w">·</span><span·class="p"·data-group-id=" | 348 | ··</span><span·class="n">Unicode</span><span·class="w">·</span><span·class="ss">encoding</span><span·class="w">·</span><span·class="ss">other</span><span·class="w">·</span><span·class="ss">than</span><span·class="w">·</span><span·class="n">UTF</span><span·class="o">-</span><span·class="mi">8</span><span·class="w">·</span><span·class="p"·data-group-id="5621969586-3">(</span><span·class="n">UTF</span><span·class="o">-</span><span·class="mi">16</span><span·class="w">·</span><span·class="ow">or</span><span·class="w">·</span><span·class="n">UTF</span><span·class="o">-</span><span·class="mi">32</span><span·cl[·...·truncated·by·diffoscope;·len:·33,·SHA:·3c775facf800cf35d5aec7ecc79dfc923c08d067a589d0bb339dd1fa45fa1d8d·...·]-3">)</span><span·class="w"> |
| 349 | </span><span·class="nf">external_chardata</span><span·class="p"·data-group-id=" | 349 | </span><span·class="nf">external_chardata</span><span·class="p"·data-group-id="5621969586-4">(</span><span·class="p"·data-group-id="5621969586-4">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">external_charlist</span><span·class="p"·data-group-id="5621969586-5">(</span><span·class="p"[·...·truncated·by·diffoscope;·len:·251,·SHA:·794c948a7944dbfe9d8f2d1883e420506982728ea2499146720ed84f6b5bc842·...·]-6">)</span><span·class="w"> |
| 350 | </span><span·class="nf">external_charlist</span><span·class="p"·data-group-id=" | 350 | </span><span·class="nf">external_charlist</span><span·class="p"·data-group-id="5621969586-7">(</span><span·class="p"·data-group-id="5621969586-7">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">maybe_improper_list</span><span·class="p"·data-group-id="5621969586-8">(</span><span·class="[·...·truncated·by·diffoscope;·len:·335,·SHA:·5063540444c51d267d9dcdee1a898da99f8cdcb966933121e9a62b6d7bfd2a03·...·]-10">)</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 351 | ··</span><span·class="nf">external_charlist</span><span·class="p"·data-group-id=" | 351 | ··</span><span·class="nf">external_charlist</span><span·class="p"·data-group-id="5621969586-11">(</span><span·class="p"·data-group-id="5621969586-11">)</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">external_unicode_binary</span><span·class="p"·data-group-id="5621969586-12">(</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·272,·SHA:·6e2cd6d1faaa3d2b362e5f386356aba503eb330aed6dd35e9af6d3686efc703b·...·]-8">)</span></code></pre><h2·id="basic-language-support"·class="section-heading"> |
| 352 | ··<a·href="#basic-language-support"·class="hover-link"> | 352 | ··<a·href="#basic-language-support"·class="hover-link"> |
| 353 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 353 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 354 | ··</a> | 354 | ··</a> |
| 355 | ··<span·class="text">Basic·Language·Support</span> | 355 | ··<span·class="text">Basic·Language·Support</span> |
| 356 | </h2> | 356 | </h2> |
| 357 | <p><a·href=""·id="unicode_in_erlang"></a>·As·from·Erlang/OTP·R16,·Erlang·source·files·can·be | 357 | <p><a·href=""·id="unicode_in_erlang"></a>·As·from·Erlang/OTP·R16,·Erlang·source·files·can·be |
| 358 | written·in·UTF-8·or·bytewise·(<code·class="inline">latin1</code>)·encoding.·For·information·about·how·to | 358 | written·in·UTF-8·or·bytewise·(<code·class="inline">latin1</code>)·encoding.·For·information·about·how·to |
| Offset 396, 78 lines modified | Offset 396, 78 lines modified | ||
| 396 | ··<a·href="#heuristic-string-detection"·class="hover-link"> | 396 | ··<a·href="#heuristic-string-detection"·class="hover-link"> |
| 397 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 397 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 398 | ··</a> | 398 | ··</a> |
| 399 | ··<span·class="text">Heuristic·String·Detection</span> | 399 | ··<span·class="text">Heuristic·String·Detection</span> |
| 400 | </h3> | 400 | </h3> |
| 401 | <p>In·certain·output·functions·and·in·the·output·of·return·values·in·the·shell, | 401 | <p>In·certain·output·functions·and·in·the·output·of·return·values·in·the·shell, |
| 402 | Erlang·tries·to·detect·string·data·in·lists·and·binaries·heuristically. | 402 | Erlang·tries·to·detect·string·data·in·lists·and·binaries·heuristically. |
| 403 | Typically·you·will·see·heuristic·detection·in·a·situation·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="p"·data-group-id=" | 403 | Typically·you·will·see·heuristic·detection·in·a·situation·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="p"·data-group-id="7615877719-1">[</span><span·class="mi">97</span><span·class="p">,</span><span·class="mi">98</span><span·class="p">,</span><span·class="mi">99</span><span·class="p"·data-group-id="7615877719-1">]</span><span·class="p">.</span><span·class="w"> |
| 404 | </span><span·class="s">"abc"</span><span·class="gp·unselectable"> | 404 | </span><span·class="s">"abc"</span><span·class="gp·unselectable"> |
| 405 | 2>·</span><span·class="p"·data-group-id=" | 405 | 2>·</span><span·class="p"·data-group-id="7615877719-2"><<</span><span·class="mi">97</span><span·class="p">,</span><span·class="mi">98</span><span·class="p">,</span><span·class="mi">99</span><span·class="p"·data-group-id="7615877719-2">>></span><span·class="p">.</span><span·class="w"> |
| 406 | </span><span·class="p"·data-group-id=" | 406 | </span><span·class="p"·data-group-id="7615877719-3"><<</span><span·class="s">"abc"</span><span·class="p"·data-group-id="7615877719-3">>></span><span·class="gp·unselectable"> |
| 407 | 3>·</span><span·class="p"·data-group-id=" | 407 | 3>·</span><span·class="p"·data-group-id="7615877719-4"><<</span><span·class="mi">195</span><span·class="p">,</span><span·class="mi">165</span><span·class="p">,</span><span·class="mi">195</span><span·class="p">,</span><span·class="mi">164</span><span·class="p">,</span><span·class="mi">195</s[·...·truncated·by·diffoscope;·len:·96,·SHA:·ef1d52058ce41126c62200e380e3e85c20405f976dd20831d4b6b0d436df2fc9·...·]-4">>></span><span·class="p">.</span><span·class="w"> |
| 408 | </span><span·class="p"·data-group-id=" | 408 | </span><span·class="p"·data-group-id="7615877719-5"><<</span><span·class="s">"åäö"</span><span·class="o">/</span><span·class="ss">utf8</span><span·class="p"·data-group-id="7615877719-5">>></span></code></pre><p>Here·the·shell·detects·lists·containing·printable·characters·or·binaries |
| 409 | containing·printable·characters·in·bytewise·or·UTF-8·encoding.·But·what·is·a | 409 | containing·printable·characters·in·bytewise·or·UTF-8·encoding.·But·what·is·a |
| 410 | printable·character?·One·view·is·that·anything·the·Unicode·standard·thinks·is | 410 | printable·character?·One·view·is·that·anything·the·Unicode·standard·thinks·is |
| 411 | printable,·is·also·printable·according·to·the·heuristic·detection.·The·result·is | 411 | printable,·is·also·printable·according·to·the·heuristic·detection.·The·result·is |
| 412 | then·that·almost·any·list·of·integers·are·deemed·a·string,·and·all·sorts·of | 412 | then·that·almost·any·list·of·integers·are·deemed·a·string,·and·all·sorts·of |
| 413 | characters·are·printed,·maybe·also·characters·that·your·terminal·lacks·in·its | 413 | characters·are·printed,·maybe·also·characters·that·your·terminal·lacks·in·its |
| 414 | font·set·(resulting·in·some·unappreciated·generic·output).·Another·way·is·to | 414 | font·set·(resulting·in·some·unappreciated·generic·output).·Another·way·is·to |
| 415 | keep·it·backward·compatible·so·that·only·the·ISO·Latin-1·character·set·is·used | 415 | keep·it·backward·compatible·so·that·only·the·ISO·Latin-1·character·set·is·used |
| 416 | to·detect·a·string.·A·third·way·is·to·let·the·user·decide·exactly·what·Unicode | 416 | to·detect·a·string.·A·third·way·is·to·let·the·user·decide·exactly·what·Unicode |
| 417 | ranges·that·are·to·be·viewed·as·characters.</p><p>As·from·Erlang/OTP·R16B·you·can·select·the·ISO·Latin-1·range·or·the·whole | 417 | ranges·that·are·to·be·viewed·as·characters.</p><p>As·from·Erlang/OTP·R16B·you·can·select·the·ISO·Latin-1·range·or·the·whole |
| 418 | Unicode·range·by·supplying·startup·flag·<code·class="inline">+pc·latin1</code>·or·<code·class="inline">+pc·unicode</code>, | 418 | Unicode·range·by·supplying·startup·flag·<code·class="inline">+pc·latin1</code>·or·<code·class="inline">+pc·unicode</code>, |
| 419 | respectively.·For·backward·compatibility,·<code·class="inline">latin1</code>·is·default.·This·only | 419 | respectively.·For·backward·compatibility,·<code·class="inline">latin1</code>·is·default.·This·only |
| 420 | controls·how·heuristic·string·detection·is·done.·More·ranges·are·expected·to·be | 420 | controls·how·heuristic·string·detection·is·done.·More·ranges·are·expected·to·be |
| 421 | added·in·the·future,·enabling·tailoring·of·the·heuristics·to·the·language·and | 421 | added·in·the·future,·enabling·tailoring·of·the·heuristics·to·the·language·and |
| 422 | region·relevant·to·the·user.</p><p>The·following·examples·show·the·two·startup·options:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="ss">erl</span><span·class="w">·</span><span·class="o">+</span><span·class="ss">pc</span><span·class="w">·</span><span·class="ss">latin1</span><span·class="w"> | 422 | region·relevant·to·the·user.</p><p>The·following·examples·show·the·two·startup·options:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="ss">erl</span><span·class="w">·</span><span·class="o">+</span><span·class="ss">pc</span><span·class="w">·</span><span·class="ss">latin1</span><span·class="w"> |
| 423 | </span><span·class="n">Erlang</span><span·class="w">·</span><span·class="n">R16B</span><span·class="w">·</span><span·class="p"·data-group-id=" | 423 | </span><span·class="n">Erlang</span><span·class="w">·</span><span·class="n">R16B</span><span·class="w">·</span><span·class="p"·data-group-id="1301346162-1">(</span><span·class="ss">erts</span><span·class="o">-</span><span·class="mf">5.10</span><span·class="p">.</span><span·class="mi">1</span><span·class="p"·data-group-id="1301346162-1">)</span><span·class="w">·</span><span·class="p"·data-group-i[·...·truncated·by·diffoscope;·len:·782,·SHA:·7366def855d59c62bea74fb3ae404d9e02c32dd13c76a4677d089b0ca31eaad8·...·]-5">]</span><span·class="w"> |
| 424 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V5</span><span·class="p">.</span><span·class="mf">10.1</span><span·class="w">··</span><span·class="p"·data-group-id=" | 424 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V5</span><span·class="p">.</span><span·class="mf">10.1</span><span·class="w">··</span><span·class="p"·data-group-id="1301346162-6">(</span><span·class="ss">abort</span><span·class="w">·</span><span·class="ss">with</span><span·class="w">·</span><span·class="err">^</span><span·class="n">G</span><span·class="p"·data-group-id="1301346162-6">)</span><span·class="gp·unselectable"> |
| 425 | 1>·</span><span·class="p"·data-group-id=" | 425 | 1>·</span><span·class="p"·data-group-id="1301346162-7">[</span><span·class="mi">1024</span><span·class="p"·data-group-id="1301346162-7">]</span><span·class="p">.</span><span·class="w"> |
| 426 | </span><span·class="p"·data-group-id=" | 426 | </span><span·class="p"·data-group-id="1301346162-8">[</span><span·class="mi">1024</span><span·class="p"·data-group-id="1301346162-8">]</span><span·class="gp·unselectable"> |
| 427 | 2>·</span><span·class="p"·data-group-id=" | 427 | 2>·</span><span·class="p"·data-group-id="1301346162-9">[</span><span·class="mi">1070</span><span·class="p">,</span><span·class="mi">1085</span><span·class="p">,</span><span·class="mi">1080</span><span·class="p">,</span><span·class="mi">1082</span><span·class="p">,</span><span·class="mi">1086</spa[·...·truncated·by·diffoscope;·len:·95,·SHA:·81f8948fac099491225faacb82f3070538da6318df6bbe3f3d56c9f605e6b56b·...·]-9">]</span><span·class="p">.</span><span·class="w"> |
| 428 | </span><span·class="p"·data-group-id=" | 428 | </span><span·class="p"·data-group-id="1301346162-10">[</span><span·class="mi">1070</span><span·class="p">,</span><span·class="mi">1085</span><span·class="p">,</span><span·class="mi">1080</span><span·class="p">,</span><span·class="mi">1082</span><span·class="p">,</span><span·class="mi">1086</sp[·...·truncated·by·diffoscope;·len:·96,·SHA:·b3b6d9c99a1c61c3ccb7bfa8eea6ee533cda2732e386ee6a3b5cc027cff3cebf·...·]-10">]</span><span·class="gp·unselectable"> |
| 429 | 3>·</span><span·class="p"·data-group-id=" | 429 | 3>·</span><span·class="p"·data-group-id="1301346162-11">[</span><span·class="mi">229</span><span·class="p">,</span><span·class="mi">228</span><span·class="p">,</span><span·class="mi">246</span><span·class="p"·data-group-id="1301346162-11">]</span><span·class="p">.</span><span·class="w"> |
| 430 | </span><span·class="s">"åäö"</span><span·class="gp·unselectable"> | 430 | </span><span·class="s">"åäö"</span><span·class="gp·unselectable"> |
| 431 | 4>·</span><span·class="p"·data-group-id=" | 431 | 4>·</span><span·class="p"·data-group-id="1301346162-12"><<</span><span·class="mi">208</span><span·class="p">,</span><span·class="mi">174</span><span·class="p">,</span><span·class="mi">208</span><span·class="p">,</span><span·class="mi">189</span><span·class="p">,</span><span·class="mi">208</[·...·truncated·by·diffoscope;·len:·403,·SHA:·52771e60de64f86f0395047fbebeb6051c2f5800898f2e10a1d7f3f76b4f7687·...·]-12">>></span><span·class="p">.</span><span·class="w"> |
| 432 | </span><span·class="p"·data-group-id=" | 432 | </span><span·class="p"·data-group-id="1301346162-13"><<</span><span·class="mi">208</span><span·class="p">,</span><span·class="mi">174</span><span·class="p">,</span><span·class="mi">208</span><span·class="p">,</span><span·class="mi">189</span><span·class="p">,</span><span·class="mi">208</[·...·truncated·by·diffoscope;·len:·403,·SHA:·52771e60de64f86f0395047fbebeb6051c2f5800898f2e10a1d7f3f76b4f7687·...·]-13">>></span><span·class="gp·unselectable"> |
| 433 | 5>·</span><span·class="p"·data-group-id=" | 433 | 5>·</span><span·class="p"·data-group-id="1301346162-14"><<</span><span·class="mi">229</span><span·class="o">/</span><span·class="ss">utf8</span><span·class="p">,</span><span·class="mi">228</span><span·class="o">/</span><span·class="ss">utf8</span><span·class="p">,</span><span·class="mi">246[·...·truncated·by·diffoscope;·len:·100,·SHA:·bff551605a2a125b78a27f6b36e96d8e85ea1e55b25d00a5d84930a6847ce5bb·...·]-14">>></span><span·class="p">.</span><span·class="w"> |
| 434 | </span><span·class="p"·data-group-id=" | 434 | </span><span·class="p"·data-group-id="1301346162-15"><<</span><span·class="s">"åäö"</span><span·class="o">/</span><span·class="ss">utf8</span><span·class="p"·data-group-id="1301346162-15">>></span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="ss">erl</span><span·class="w">·</span><span·class="o">+</span><span·class="ss">pc</span><span·class="w">·</span><span·class="ss">unicode</span><span·class="w"> |
| 435 | </span><span·class="n">Erlang</span><span·class="w">·</span><span·class="n">R16B</span><span·class="w">·</span><span·class="p"·data-group-id=" | 435 | </span><span·class="n">Erlang</span><span·class="w">·</span><span·class="n">R16B</span><span·class="w">·</span><span·class="p"·data-group-id="3509835116-1">(</span><span·class="ss">erts</span><span·class="o">-</span><span·class="mf">5.10</span><span·class="p">.</span><span·class="mi">1</span><span·class="p"·data-group-id="3509835116-1">)</span><span·class="w">·</span><span·class="p"·data-group-i[·...·truncated·by·diffoscope;·len:·782,·SHA:·af5950293d0ac81e0b358a87ad0695fc208d074845b821a5f10cf0e596a37030·...·]-5">]</span><span·class="w"> |
| 436 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V5</span><span·class="p">.</span><span·class="mf">10.1</span><span·class="w">··</span><span·class="p"·data-group-id=" | 436 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V5</span><span·class="p">.</span><span·class="mf">10.1</span><span·class="w">··</span><span·class="p"·data-group-id="3509835116-6">(</span><span·class="ss">abort</span><span·class="w">·</span><span·class="ss">with</span><span·class="w">·</span><span·class="err">^</span><span·class="n">G</span><span·class="p"·data-group-id="3509835116-6">)</span><span·class="gp·unselectable"> |
| 437 | 1>·</span><span·class="p"·data-group-id=" | 437 | 1>·</span><span·class="p"·data-group-id="3509835116-7">[</span><span·class="mi">1024</span><span·class="p"·data-group-id="3509835116-7">]</span><span·class="p">.</span><span·class="w"> |
| 438 | </span><span·class="s">"Ѐ"</span><span·class="gp·unselectable"> | 438 | </span><span·class="s">"Ѐ"</span><span·class="gp·unselectable"> |
| 439 | 2>·</span><span·class="p"·data-group-id=" | 439 | 2>·</span><span·class="p"·data-group-id="3509835116-8">[</span><span·class="mi">1070</span><span·class="p">,</span><span·class="mi">1085</span><span·class="p">,</span><span·class="mi">1080</span><span·class="p">,</span><span·class="mi">1082</span><span·class="p">,</span><span·class="mi">1086</spa[·...·truncated·by·diffoscope;·len:·95,·SHA:·06b40cb76fdcf0a73d7923aa1e46bde30a870cc5cdf0f38aa9253bd382af82a7·...·]-8">]</span><span·class="p">.</span><span·class="w"> |
| 440 | </span><span·class="s">"Юникод"</span><span·class="gp·unselectable"> | 440 | </span><span·class="s">"Юникод"</span><span·class="gp·unselectable"> |
| 441 | 3>·</span><span·class="p"·data-group-id=" | 441 | 3>·</span><span·class="p"·data-group-id="3509835116-9">[</span><span·class="mi">229</span><span·class="p">,</span><span·class="mi">228</span><span·class="p">,</span><span·class="mi">246</span><span·class="p"·data-group-id="3509835116-9">]</span><span·class="p">.</span><span·class="w"> |
| 442 | </span><span·class="s">"åäö"</span><span·class="gp·unselectable"> | 442 | </span><span·class="s">"åäö"</span><span·class="gp·unselectable"> |
| 443 | 4>·</span><span·class="p"·data-group-id=" | 443 | 4>·</span><span·class="p"·data-group-id="3509835116-10"><<</span><span·class="mi">208</span><span·class="p">,</span><span·class="mi">174</span><span·class="p">,</span><span·class="mi">208</span><span·class="p">,</span><span·class="mi">189</span><span·class="p">,</span><span·class="mi">208</[·...·truncated·by·diffoscope;·len:·403,·SHA:·8cca67da29d90455051a8bf879ccd0b89a0ce6e2e00650cf3a95ad55bbf5c623·...·]-10">>></span><span·class="p">.</span><span·class="w"> |
| 444 | </span><span·class="p"·data-group-id=" | 444 | </span><span·class="p"·data-group-id="3509835116-11"><<</span><span·class="s">"Юникод"</span><span·class="o">/</span><span·class="ss">utf8</span><span·class="p"·data-group-id="3509835116-11">>></span><span·class="gp·unselectable"> |
| 445 | 5>·</span><span·class="p"·data-group-id=" | 445 | 5>·</span><span·class="p"·data-group-id="3509835116-12"><<</span><span·class="mi">229</span><span·class="o">/</span><span·class="ss">utf8</span><span·class="p">,</span><span·class="mi">228</span><span·class="o">/</span><span·class="ss">utf8</span><span·class="p">,</span><span·class="mi">246[·...·truncated·by·diffoscope;·len:·100,·SHA:·79cb5299f8ebc818a293af1c6d22555c6f419f8cd6813b73735540f3e0774515·...·]-12">>></span><span·class="p">.</span><span·class="w"> |
| 446 | </span><span·class="p"·data-group-id=" | 446 | </span><span·class="p"·data-group-id="3509835116-13"><<</span><span·class="s">"åäö"</span><span·class="o">/</span><span·class="ss">utf8</span><span·class="p"·data-group-id="3509835116-13">>></span></code></pre><p>In·the·examples,·you·can·see·that·the·default·Erlang·shell·interprets·only |
| 447 | characters·from·the·ISO·Latin1·range·as·printable·and·only·detects·lists·or | 447 | characters·from·the·ISO·Latin1·range·as·printable·and·only·detects·lists·or |
| 448 | binaries·with·those·"printable"·characters·as·containing·string·data.·The·valid | 448 | binaries·with·those·"printable"·characters·as·containing·string·data.·The·valid |
| 449 | UTF-8·binary·containing·the·Russian·word·"Юникод",·is·not·printed·as·a·string. | 449 | UTF-8·binary·containing·the·Russian·word·"Юникод",·is·not·printed·as·a·string. |
| 450 | When·started·with·all·Unicode·characters·printable·(<code·class="inline">+pc·unicode</code>),·the·shell | 450 | When·started·with·all·Unicode·characters·printable·(<code·class="inline">+pc·unicode</code>),·the·shell |
| 451 | outputs·anything·containing·printable·Unicode·data·(in·binaries,·either·UTF-8·or | 451 | outputs·anything·containing·printable·Unicode·data·(in·binaries,·either·UTF-8·or |
| 452 | bytewise·encoded)·as·string·data.</p><p>These·heuristics·are·also·used·by·<a·href="io.html#format/2"><code·class="inline">io:format/2</code></a>,·<a·href="io_lib.html#format/2"><code·class="inline">io_lib:format/2</code></a>,·and·friends | 452 | bytewise·encoded)·as·string·data.</p><p>These·heuristics·are·also·used·by·<a·href="io.html#format/2"><code·class="inline">io:format/2</code></a>,·<a·href="io_lib.html#format/2"><code·class="inline">io_lib:format/2</code></a>,·and·friends |
| 453 | when·modifier·<code·class="inline">t</code>·is·used·with·<code·class="inline">~p</code>·or·<code·class="inline">~P</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="ss">erl</span><span·class="w">·</span><span·class="o">+</span><span·class="ss">pc</span><span·class="w">·</span><span·class="ss">latin1</span><span·class="w"> | 453 | when·modifier·<code·class="inline">t</code>·is·used·with·<code·class="inline">~p</code>·or·<code·class="inline">~P</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="ss">erl</span><span·class="w">·</span><span·class="o">+</span><span·class="ss">pc</span><span·class="w">·</span><span·class="ss">latin1</span><span·class="w"> |
| 454 | </span><span·class="n">Erlang</span><span·class="w">·</span><span·class="n">R16B</span><span·class="w">·</span><span·class="p"·data-group-id=" | 454 | </span><span·class="n">Erlang</span><span·class="w">·</span><span·class="n">R16B</span><span·class="w">·</span><span·class="p"·data-group-id="6476170228-1">(</span><span·class="ss">erts</span><span·class="o">-</span><span·class="mf">5.10</span><span·class="p">.</span><span·class="mi">1</span><span·class="p"·data-group-id="6476170228-1">)</span><span·class="w">·</span><span·class="p"·data-group-i[·...·truncated·by·diffoscope;·len:·782,·SHA:·8dff2b72e015aeb96a9db4fd707b2f65a488161f2ef401f61b542a2484f4ff6e·...·]-5">]</span><span·class="w"> |
| 455 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V5</span><span·class="p">.</span><span·class="mf">10.1</span><span·class="w">··</span><span·class="p"·data-group-id=" | 455 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V5</span><span·class="p">.</span><span·class="mf">10.1</span><span·class="w">··</span><span·class="p"·data-group-id="6476170228-6">(</span><span·class="ss">abort</span><span·class="w">·</span><span·class="ss">with</span><span·class="w">·</span><span·class="err">^</span><span·class="n">G</span><span·class="p"·data-group-id="6476170228-6">)</span><span·class="gp·unselectable"> |
| 456 | 1>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 456 | 1>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="6476170228-7">(</span><span·class="s">"~tp</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="p"·data-group-id="6476170228-8">[</span><span·class="p"·data-group-id="6476170228-9">{</span><span·class="p"·d[·...·truncated·by·diffoscope;·len:·1308,·SHA:·b21aa3b0d533173a74dd7b5c81805be37ec6b94f0fe4932eb012935fe133af5b·...·]-7">)</span><span·class="p">.</span><span·class="w"> |
| 457 | </span><span·class="p"·data-group-id=" | 457 | </span><span·class="p"·data-group-id="6476170228-13">{</span><span·class="p"·data-group-id="6476170228-14"><<</span><span·class="s">"åäö"</span><span·class="p"·data-group-id="6476170228-14">>></span><span·class="p">,</span><span·class="p"·data-group-id="6476170228-15"><[·...·truncated·by·diffoscope;·len:·938,·SHA:·059330aef419335264a7f90798f6628d6fbb8dc8662eddeccbd3bfa99ce4fae0·...·]-13">}</span><span·class="w"> |
| 458 | </span><span·class="ss">ok</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="ss">erl</span><span·class="w">·</span><span·class="o">+</span><span·class="ss">pc</span><span·class="w">·</span><span·class="ss">unicode</span><span·class="w"> | 458 | </span><span·class="ss">ok</span></code></pre><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="ss">erl</span><span·class="w">·</span><span·class="o">+</span><span·class="ss">pc</span><span·class="w">·</span><span·class="ss">unicode</span><span·class="w"> |
| 459 | </span><span·class="n">Erlang</span><span·class="w">·</span><span·class="n">R16B</span><span·class="w">·</span><span·class="p"·data-group-id=" | 459 | </span><span·class="n">Erlang</span><span·class="w">·</span><span·class="n">R16B</span><span·class="w">·</span><span·class="p"·data-group-id="8649211010-1">(</span><span·class="ss">erts</span><span·class="o">-</span><span·class="mf">5.10</span><span·class="p">.</span><span·class="mi">1</span><span·class="p"·data-group-id="8649211010-1">)</span><span·class="w">·</span><span·class="p"·data-group-i[·...·truncated·by·diffoscope;·len:·782,·SHA:·42b7b2933df05a1a09f178882012a979bda1538b96761a5e3dbc61e376ec05c5·...·]-5">]</span><span·class="w"> |
| 460 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V5</span><span·class="p">.</span><span·class="mf">10.1</span><span·class="w">··</span><span·class="p"·data-group-id=" | 460 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V5</span><span·class="p">.</span><span·class="mf">10.1</span><span·class="w">··</span><span·class="p"·data-group-id="8649211010-6">(</span><span·class="ss">abort</span><span·class="w">·</span><span·class="ss">with</span><span·class="w">·</span><span·class="err">^</span><span·class="n">G</span><span·class="p"·data-group-id="8649211010-6">)</span><span·class="gp·unselectable"> |
| 461 | 1>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 461 | 1>·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="8649211010-7">(</span><span·class="s">"~tp</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="p"·data-group-id="8649211010-8">[</span><span·class="p"·data-group-id="8649211010-9">{</span><span·class="p"·d[·...·truncated·by·diffoscope;·len:·1308,·SHA:·4be7df2058b5633909dceb7539cece2cac139535059d44061af9931a7b8a66ef·...·]-7">)</span><span·class="p">.</span><span·class="w"> |
| 462 | </span><span·class="p"·data-group-id=" | 462 | </span><span·class="p"·data-group-id="8649211010-13">{</span><span·class="p"·data-group-id="8649211010-14"><<</span><span·class="s">"åäö"</span><span·class="p"·data-group-id="8649211010-14">>></span><span·class="p">,</span><span·class="p"·data-group-id="8649211010-15"><[·...·truncated·by·diffoscope;·len:·443,·SHA:·312766e6edca9dea84b4bffe70d6c62c981ca9395ef8a8703d0ba275826a2ce8·...·]-13">}</span><span·class="w"> |
| 463 | </span><span·class="ss">ok</span></code></pre><p>Notice·that·this·only·affects·<em>heuristic</em>·interpretation·of·lists·and·binaries | 463 | </span><span·class="ss">ok</span></code></pre><p>Notice·that·this·only·affects·<em>heuristic</em>·interpretation·of·lists·and·binaries |
| 464 | on·output.·For·example,·the·<code·class="inline">~ts</code>·format·sequence·always·outputs·a·valid·list·of | 464 | on·output.·For·example,·the·<code·class="inline">~ts</code>·format·sequence·always·outputs·a·valid·list·of |
| 465 | characters,·regardless·of·the·<code·class="inline">+pc</code>·setting,·as·the·programmer·has·explicitly | 465 | characters,·regardless·of·the·<code·class="inline">+pc</code>·setting,·as·the·programmer·has·explicitly |
| 466 | requested·string·output.</p><h2·id="the-interactive-shell"·class="section-heading"> | 466 | requested·string·output.</p><h2·id="the-interactive-shell"·class="section-heading"> |
| 467 | ··<a·href="#the-interactive-shell"·class="hover-link"> | 467 | ··<a·href="#the-interactive-shell"·class="hover-link"> |
| 468 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 468 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 469 | ··</a> | 469 | ··</a> |
| Offset 482, 47 lines modified | Offset 482, 47 lines modified | ||
| 482 | example,·a·<code·class="inline">LANG</code>·environment·variable·can·be·set·as·follows:</p><pre><code·class="text">$·echo·$LANG | 482 | example,·a·<code·class="inline">LANG</code>·environment·variable·can·be·set·as·follows:</p><pre><code·class="text">$·echo·$LANG |
| 483 | en_US.UTF-8</code></pre><p>Most·systems·handle·variable·<code·class="inline">LC_CTYPE</code>·before·<code·class="inline">LANG</code>,·so·if·that·is·set,·it | 483 | en_US.UTF-8</code></pre><p>Most·systems·handle·variable·<code·class="inline">LC_CTYPE</code>·before·<code·class="inline">LANG</code>,·so·if·that·is·set,·it |
| 484 | must·be·set·to·<code·class="inline">UTF-8</code>:</p><pre><code·class="text">$·echo·$LC_CTYPE | 484 | must·be·set·to·<code·class="inline">UTF-8</code>:</p><pre><code·class="text">$·echo·$LC_CTYPE |
| 485 | en_US.UTF-8</code></pre><p>The·<code·class="inline">LANG</code>·or·<code·class="inline">LC_CTYPE</code>·setting·are·to·be·consistent·with·what·the·terminal·is | 485 | en_US.UTF-8</code></pre><p>The·<code·class="inline">LANG</code>·or·<code·class="inline">LC_CTYPE</code>·setting·are·to·be·consistent·with·what·the·terminal·is |
| 486 | capable·of.·There·is·no·portable·way·for·Erlang·to·ask·the·terminal·about·its | 486 | capable·of.·There·is·no·portable·way·for·Erlang·to·ask·the·terminal·about·its |
| 487 | UTF-8·capacity,·we·have·to·rely·on·the·language·and·character·type·settings.</p><p>To·investigate·what·Erlang·thinks·about·the·terminal,·the·call | 487 | UTF-8·capacity,·we·have·to·rely·on·the·language·and·character·type·settings.</p><p>To·investigate·what·Erlang·thinks·about·the·terminal,·the·call |
| 488 | <a·href="io.html#getopts/1"><code·class="inline">io:getopts()</code></a>·can·be·used·when·the·shell·is·started:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="n">LC_CTYPE</span><span·class="o">=</span><span·class="ss">en_US</span><span·class="p">.</span><span·class="n">ISO</span><span·class="o">-</span><span·class="mi">8859</span><span·class="o">-</span><span·class="mi">1</span><span·class="w">·</span><span·class="ss">erl</span><span·class="w"> | 488 | <a·href="io.html#getopts/1"><code·class="inline">io:getopts()</code></a>·can·be·used·when·the·shell·is·started:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="sc">$·</span><span·class="n">LC_CTYPE</span><span·class="o">=</span><span·class="ss">en_US</span><span·class="p">.</span><span·class="n">ISO</span><span·class="o">-</span><span·class="mi">8859</span><span·class="o">-</span><span·class="mi">1</span><span·class="w">·</span><span·class="ss">erl</span><span·class="w"> |
| 489 | </span><span·class="n">Erlang</span><span·class="w">·</span><span·class="n">R16B</span><span·class="w">·</span><span·class="p"·data-group-id=" | 489 | </span><span·class="n">Erlang</span><span·class="w">·</span><span·class="n">R16B</span><span·class="w">·</span><span·class="p"·data-group-id="2142883809-1">(</span><span·class="ss">erts</span><span·class="o">-</span><span·class="mf">5.10</span><span·class="p">.</span><span·class="mi">1</span><span·class="p"·data-group-id="2142883809-1">)</span><span·class="w">·</span><span·class="p"·data-group-i[·...·truncated·by·diffoscope;·len:·782,·SHA:·cdd977f952ae7e7b2ea538a4268acfdd8c809c18a6069cc9095aae800d94f90a·...·]-5">]</span><span·class="w"> |
| 490 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V5</span><span·class="p">.</span><span·class="mf">10.1</span><span·class="w">··</span><span·class="p"·data-group-id=" | 490 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V5</span><span·class="p">.</span><span·class="mf">10.1</span><span·class="w">··</span><span·class="p"·data-group-id="2142883809-6">(</span><span·class="ss">abort</span><span·class="w">·</span><span·class="ss">with</span><span·class="w">·</span><span·class="err">^</span><span·class="n">G</span><span·class="p"·data-group-id="2142883809-6">)</span><span·class="gp·unselectable"> |
| 491 | 1>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">keyfind</span><span·class="p"·data-group-id=" | 491 | 1>·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">keyfind</span><span·class="p"·data-group-id="2142883809-7">(</span><span·class="ss">encoding</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">getopts</span>[·...·truncated·by·diffoscope;·len:·147,·SHA:·216db81e0dd9701d6e51ff9cc9237183005276f230d3932340b9fbfc618c1815·...·]-7">)</span><span·class="p">.</span><span·class="w"> |
| 492 | </span><span·class="p"·data-group-id=" | 492 | </span><span·class="p"·data-group-id="2142883809-9">{</span><span·class="ss">encoding</span><span·class="p">,</span><span·class="ss">latin1</span><span·class="p"·data-group-id="2142883809-9">}</span><span·class="gp·unselectable"> |
| 493 | 2>·</span><span·class="nf">q</span><span·class="p"·data-group-id=" | 493 | 2>·</span><span·class="nf">q</span><span·class="p"·data-group-id="2142883809-10">(</span><span·class="p"·data-group-id="2142883809-10">)</span><span·class="p">.</span><span·class="w"> |
| 494 | </span><span·class="ss">ok</span><span·class="w"> | 494 | </span><span·class="ss">ok</span><span·class="w"> |
| 495 | </span><span·class="sc">$·</span><span·class="n">LC_CTYPE</span><span·class="o">=</span><span·class="ss">en_US</span><span·class="p">.</span><span·class="n">UTF</span><span·class="o">-</span><span·class="mi">8</span><span·class="w">·</span><span·class="ss">erl</span><span·class="w"> | 495 | </span><span·class="sc">$·</span><span·class="n">LC_CTYPE</span><span·class="o">=</span><span·class="ss">en_US</span><span·class="p">.</span><span·class="n">UTF</span><span·class="o">-</span><span·class="mi">8</span><span·class="w">·</span><span·class="ss">erl</span><span·class="w"> |
| 496 | </span><span·class="n">Erlang</span><span·class="w">·</span><span·class="n">R16B</span><span·class="w">·</span><span·class="p"·data-group-id=" | 496 | </span><span·class="n">Erlang</span><span·class="w">·</span><span·class="n">R16B</span><span·class="w">·</span><span·class="p"·data-group-id="2142883809-11">(</span><span·class="ss">erts</span><span·class="o">-</span><span·class="mf">5.10</span><span·class="p">.</span><span·class="mi">1</span><span·class="p"·data-group-id="2142883809-11">)</span><span·class="w">·</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·791,·SHA:·fef48eac59e39cd25f608e0bba117af9d277da80705cf4b53a92a7a1a45d9c0a·...·]-15">]</span><span·class="w"> |
| 497 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V5</span><span·class="p">.</span><span·class="mf">10.1</span><span·class="w">··</span><span·class="p"·data-group-id=" | 497 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V5</span><span·class="p">.</span><span·class="mf">10.1</span><span·class="w">··</span><span·class="p"·data-group-id="2142883809-16">(</span><span·class="ss">abort</span><span·class="w">·</span><span·class="ss">with</span><span·class="w">·</span><span·class="err">^</span><span·class="n">G</span><span·class="p"·data-group-id="2142883809-16">)</span><span·class="gp·unselectable"> |
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| 587 | ···························QueryString·::·<a·href="#t:uri_string/0">uri_string</a>()·|·<a·href="#t:error/0">error</a>().</pre> | 587 | ···························QueryString·::·<a·href="#t:uri_string/0">uri_string</a>()·|·<a·href="#t:error/0">error</a>().</pre> |
| 588 | ······</div> | 588 | ······</div> |
| 589 | <p>Composes·a·form-urlencoded·<code·class="inline">QueryString</code>·based·on·a·<code·class="inline">QueryList</code>,·a·list·of | 589 | <p>Composes·a·form-urlencoded·<code·class="inline">QueryString</code>·based·on·a·<code·class="inline">QueryList</code>,·a·list·of |
| 590 | non-percent-encoded·key-value·pairs.</p><p>Form-urlencoding·is·defined·in·section·4.10.21.6·of·the·<a·href="https://www.w3.org/TR/html52/">HTML·5.2</a> | 590 | non-percent-encoded·key-value·pairs.</p><p>Form-urlencoding·is·defined·in·section·4.10.21.6·of·the·<a·href="https://www.w3.org/TR/html52/">HTML·5.2</a> |
| 591 | specification·and·in·section·4.10.22.6·of·the·<a·href="https://www.w3.org/TR/html50/">HTML·5.0</a> | 591 | specification·and·in·section·4.10.22.6·of·the·<a·href="https://www.w3.org/TR/html50/">HTML·5.0</a> |
| 592 | specification·for·non-UTF-8·encodings.</p><p>See·also·the·opposite·operation·<a·href="#dissect_query/1"><code·class="inline">dissect_query/1</code></a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">compose_query</span><span·class="p"·data-group-id=" | 592 | specification·for·non-UTF-8·encodings.</p><p>See·also·the·opposite·operation·<a·href="#dissect_query/1"><code·class="inline">dissect_query/1</code></a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">compose_query</span><span·class="p"·data-group-id="2674791068-1">(</span><span·class="p"·data-group-id="2674791068-2">[</span><span·class="p"·data-group-id="2674791068-3">{</span><span·class="s">"foo·bar"</span><span·class="p">,</span><span·class="s">"1"</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·355,·SHA:·2725a9cb2c17e26acd4479dde577757a1cdd0392d9768bb28ad9bf0f4d17bba9·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 593 | </span><span·class="s">"foo+bar=1&city=%C3%B6rebro"</span><span·class="gp·unselectable"> | 593 | </span><span·class="s">"foo+bar=1&city=%C3%B6rebro"</span><span·class="gp·unselectable"> |
| 594 | 2>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">compose_query</span><span·class="p"·data-group-id="0161355400-5">(</span><span·class="p"·data-group-id="0161355400-6">[</span><span·class="p"·data-group-id="0161355400-7">{</span><span·class="p"·data-group-id="0161355400-8"><<</span><span·class="s">"foo·bar"</span><span·class="p"·data-group-id="0161355400-8">>></span><span·class="p">,</span><span·class="p"·data-group-id="0161355400-9"><<</span><span·class="s">"1"</span><span·class="p"·data-group-id="0161355400-9">>></span><span·class="p"·data-group-id="0161355400-7">}</span><span·class="p">,</span><span·class="gp·unselectable"> | ||
| 595 | 2>·</span><span·class=" | 594 | 2>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">compose_query</span><span·class="p"·data-group-id="2674791068-5">(</span><span·class="p"·data-group-id="2674791068-6">[</span><span·class="p"·data-group-id="2674791068-7">{</span><span·class="p"[·...·truncated·by·diffoscope;·len:·432,·SHA:·6f2cee7500cfa05bf1c0772e5c5e7fa62335e1f241353ea4a91a22e73feaa17f·...·]"> |
| 595 | 2>·</span><span·class="p"·data-group-id="2674791068-10">{</span><span·class="p"·data-group-id="2674791068-11"><<</span><span·class="s">"city"</span><span·class="p"·data-group-id="2674791068-11">>></span><span·class="p">,</span><span·class="p"·data-group-id="2674791068-12"><<</span><span·class="s">"örebro"</span><span·class="o">/</span><span·class="ss">utf8</span><span·class="p"·data-group-id="2674791068-12">>></span><span·class="p"·data-group-id="2674791068-10">}</span><span·class="p"·data-group-id="2674791068-6">]</span><span·class="p"·data-group-id="2674791068-5">)</span><span·class="p">.</span><span·class="w"> | ||
| 596 | </span><span·class="p"·data-group-id=" | 596 | </span><span·class="p"·data-group-id="2674791068-13"><<</span><span·class="s">"foo+bar=1&city=%C3%B6rebro"</span><span·class="p"·data-group-id="2674791068-13">>></span></code></pre> |
| 597 | ··</section> | 597 | ··</section> |
| 598 | </section> | 598 | </section> |
| 599 | <section·class="detail"·id="compose_query/2"> | 599 | <section·class="detail"·id="compose_query/2"> |
| 600 | ··<div·class="detail-header"> | 600 | ··<div·class="detail-header"> |
| 601 | ····<a·href="#compose_query/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 601 | ····<a·href="#compose_query/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 602 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 602 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 632, 20 lines modified | Offset 632, 20 lines modified | ||
| 632 | algorithm.</p><p>There·are·two·supported·encodings:·<code·class="inline">utf8</code>·(or·<code·class="inline">unicode</code>)·and·<code·class="inline">latin1</code>.</p><p>Each·character·in·the·entry's·name·and·value·that·cannot·be·expressed·using·the | 632 | algorithm.</p><p>There·are·two·supported·encodings:·<code·class="inline">utf8</code>·(or·<code·class="inline">unicode</code>)·and·<code·class="inline">latin1</code>.</p><p>Each·character·in·the·entry's·name·and·value·that·cannot·be·expressed·using·the |
| 633 | selected·character·encoding,·is·replaced·by·a·string·consisting·of·a·U+0026 | 633 | selected·character·encoding,·is·replaced·by·a·string·consisting·of·a·U+0026 |
| 634 | AMPERSAND·character·(&),·a·"#"·(U+0023)·character,·one·or·more·ASCII·digits | 634 | AMPERSAND·character·(&),·a·"#"·(U+0023)·character,·one·or·more·ASCII·digits |
| 635 | representing·the·Unicode·code·point·of·the·character·in·base·ten,·and·finally·a | 635 | representing·the·Unicode·code·point·of·the·character·in·base·ten,·and·finally·a |
| 636 | ";"·(U+003B)·character.</p><p>Bytes·that·are·out·of·the·range·0x2A,·0x2D,·0x2E,·0x30·to·0x39,·0x41·to·0x5A, | 636 | ";"·(U+003B)·character.</p><p>Bytes·that·are·out·of·the·range·0x2A,·0x2D,·0x2E,·0x30·to·0x39,·0x41·to·0x5A, |
| 637 | 0x5F,·0x61·to·0x7A,·are·percent-encoded·(U+0025·PERCENT·SIGN·character·(%) | 637 | 0x5F,·0x61·to·0x7A,·are·percent-encoded·(U+0025·PERCENT·SIGN·character·(%) |
| 638 | followed·by·uppercase·ASCII·hex·digits·representing·the·hexadecimal·value·of·the | 638 | followed·by·uppercase·ASCII·hex·digits·representing·the·hexadecimal·value·of·the |
| 639 | byte).</p><p>See·also·the·opposite·operation·<a·href="#dissect_query/1"><code·class="inline">dissect_query/1</code></a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">compose_query</span><span·class="p"·data-group-id=" | 639 | byte).</p><p>See·also·the·opposite·operation·<a·href="#dissect_query/1"><code·class="inline">dissect_query/1</code></a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">compose_query</span><span·class="p"·data-group-id="5569892715-1">(</span><span·class="p"·data-group-id="5569892715-2">[</span><span·class="p"·data-group-id="5569892715-3">{</span><span·class="s">"foo·bar"</span><span·class="p">,</span><span·class="s">"1"</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·301,·SHA:·aab9319ef484ca57ea188c624d4e725e7d2915d4bfa6355380fce192af8f1898·...·]5-2">]</span><span·class="p">,</span><span·class="gp·unselectable"> |
| 640 | 1>·</span><span·class="p"·data-group-id=" | 640 | 1>·</span><span·class="p"·data-group-id="5569892715-5">[</span><span·class="p"·data-group-id="5569892715-6">{</span><span·class="ss">encoding</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">latin1</span><span·class="p"·data-group-id="5569892715-6">}</span><span·class="p"·da[·...·truncated·by·diffoscope;·len:·75,·SHA:·968e8d8b28dc27e9569f6a5c4c2e6acd474201c80bba36222a082de947eb96d1·...·]5-1">)</span><span·class="p">.</span><span·class="w"> |
| 641 | </span><span·class="s">"foo+bar=1&city=%F6rebro"</span><span·class="gp·unselectable"> | 641 | </span><span·class="s">"foo+bar=1&city=%F6rebro"</span><span·class="gp·unselectable"> |
| 642 | 2>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">compose_query</span><span·class="p"·data-group-id=" | 642 | 2>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">compose_query</span><span·class="p"·data-group-id="5569892715-7">(</span><span·class="p"·data-group-id="5569892715-8">[</span><span·class="p"·data-group-id="5569892715-9">{</span><span·class="p"·data-group-id="5569892715-10"><<</span><span·class="s">"foo·bar"</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·258,·SHA:·827dff85acdb32334522fa14db707e8dddf479bcf03d17469e3427cf4aa4903e·...·]5-9">}</span><span·class="p">,</span><span·class="gp·unselectable"> |
| 643 | 2>·</span><span·class="p"·data-group-id=" | 643 | 2>·</span><span·class="p"·data-group-id="5569892715-12">{</span><span·class="p"·data-group-id="5569892715-13"><<</span><span·class="s">"city"</span><span·class="p"·data-group-id="5569892715-13">>></span><span·class="p">,</span><span·class="p"·data-group-id="5569892715-14">&l[·...·truncated·by·diffoscope;·len:·684,·SHA:·7539b06664f6430ca8f711038846294470c5af0c1146b82fb2b6813bb7219ce3·...·]5-7">)</span><span·class="p">.</span><span·class="w"> |
| 644 | </span><span·class="p"·data-group-id=" | 644 | </span><span·class="p"·data-group-id="5569892715-17"><<</span><span·class="s">"foo+bar=1&city=%26%2326481%3B%26%2320140%3B"</span><span·class="p"·data-group-id="5569892715-17">>></span></code></pre> |
| 645 | ··</section> | 645 | ··</section> |
| 646 | </section> | 646 | </section> |
| 647 | <section·class="detail"·id="dissect_query/1"> | 647 | <section·class="detail"·id="dissect_query/1"> |
| 648 | ··<div·class="detail-header"> | 648 | ··<div·class="detail-header"> |
| 649 | ····<a·href="#dissect_query/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 649 | ····<a·href="#dissect_query/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 650 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 650 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 671, 19 lines modified | Offset 671, 19 lines modified | ||
| 671 | ···························QueryList·::·[{<a·href="unicode.html#t:chardata/0">unicode:chardata</a>(),·<a·href="unicode.html#t:chardata/0">unicode:chardata</a>()·|·true}]·|·<a·href="#t:error/0">error</a>().</pre> | 671 | ···························QueryList·::·[{<a·href="unicode.html#t:chardata/0">unicode:chardata</a>(),·<a·href="unicode.html#t:chardata/0">unicode:chardata</a>()·|·true}]·|·<a·href="#t:error/0">error</a>().</pre> |
| 672 | ······</div> | 672 | ······</div> |
| 673 | <p>Dissects·an·urlencoded·<code·class="inline">QueryString</code>·and·returns·a·<code·class="inline">QueryList</code>,·a·list·of | 673 | <p>Dissects·an·urlencoded·<code·class="inline">QueryString</code>·and·returns·a·<code·class="inline">QueryList</code>,·a·list·of |
| 674 | non-percent-encoded·key-value·pairs.</p><p>Form-urlencoding·is·defined·in·section·4.10.21.6·of·the·<a·href="https://www.w3.org/TR/html52/">HTML·5.2</a> | 674 | non-percent-encoded·key-value·pairs.</p><p>Form-urlencoding·is·defined·in·section·4.10.21.6·of·the·<a·href="https://www.w3.org/TR/html52/">HTML·5.2</a> |
| 675 | specification·and·in·section·4.10.22.6·of·the·<a·href="https://www.w3.org/TR/html50/">HTML·5.0</a> | 675 | specification·and·in·section·4.10.22.6·of·the·<a·href="https://www.w3.org/TR/html50/">HTML·5.0</a> |
| 676 | specification·for·non-UTF-8·encodings.</p><p>See·also·the·opposite·operation·<a·href="#compose_query/1"><code·class="inline">compose_query/1</code></a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">dissect_query</span><span·class="p"·data-group-id=" | 676 | specification·for·non-UTF-8·encodings.</p><p>See·also·the·opposite·operation·<a·href="#compose_query/1"><code·class="inline">compose_query/1</code></a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">dissect_query</span><span·class="p"·data-group-id="9557164555-1">(</span><span·class="s">"foo+bar=1&city=%C3%B6rebro"</span><span·class="p"·data-group-id="9557164555-1">)</span><span·class="p">.</span><span·class="w"> |
| 677 | </span><span·class="p"·data-group-id=" | 677 | </span><span·class="p"·data-group-id="9557164555-2">[</span><span·class="p"·data-group-id="9557164555-3">{</span><span·class="s">"foo·bar"</span><span·class="p">,</span><span·class="s">"1"</span><span·class="p"·data-group-id="9557164555-3">}</span><span·class="p">,</span><s[·...·truncated·by·diffoscope;·len:·249,·SHA:·d541988eb2abd9b3633b9f37997da696b8e9047569a312b2218f3a4dc56307e0·...·]-2">]</span><span·class="gp·unselectable"> |
| 678 | 2>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">dissect_query</span><span·class="p"·data-group-id=" | 678 | 2>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">dissect_query</span><span·class="p"·data-group-id="9557164555-5">(</span><span·class="p"·data-group-id="9557164555-6"><<</span><span·class="s">"foo+bar=1&city=%26%2326481%3B%26%2320140%3B"</span><span·class="p"·data-group-id="9557164555-6">>></span><span·class="p"·data-group-id="9[·...·truncated·by·diffoscope;·len:·9,·SHA:·d691b1fea432c69d5aa89678641d32ee8e351c0f15a86458d15bdb5f7cea4395·...·]-5">)</span><span·class="p">.</span><span·class="w"> |
| 679 | </span><span·class="p"·data-group-id="8886350856-7">[</span><span·class="p"·data-group-id="8886350856-8">{</span><span·class="p"·data-group-id="8886350856-9"><<</span><span·class="s">"foo·bar"</span><span·class="p"·data-group-id="8886350856-9">>></span><span·class="p">,</span><span·class="p"·data-group-id="8886350856-10"><<</span><span·class="s">"1"</span><span·class="p"·data-group-id="8886350856-10">>></span><span·class="p"·data-group-id="8886350856-8">}</span><span·class="p">,</span><span·class="w"> | ||
| 680 | 679 | </span><span·class="p"·data-group-id="9557164555-7">[</span><span·class="p"·data-group-id="9557164555-8">{</span><span·class="p"·data-group-id="9557164555-9"><<</span><span·class="s">"foo·bar"</span><span·class="p"·data-group-id="9557164555[·...·truncated·by·diffoscope;·len:·293,·SHA:·b837424ac50cd0b32ad9f29c07832fcd820d4250c1cd92799de579dbd6420cdc·...·]> | |
| 680 | ·</span><span·class="p"·data-group-id="9557164555-11">{</span><span·class="p"·data-group-id="9557164555-12"><<</span><span·class="s">"city"</span><span·class="p"·data-group-id="9557164555-12">>></span><span·class="p">,</span><span·class="p"·data-group-id="9557164555-13"><<</span><span·class="mi">230</span><span·class="p">,</span><span·class="mi">157</span><span·class="p">,</span><span·class="mi">177</span><span·class="p">,</span><span·class="mi">228</span><span·class="p">,</span><span·class="mi">186</span><span·class="p">,</span><span·class="mi">172</span><span·class="p"·data-group-id="9557164555-13">>></span><span·class="p"·data-group-id="9557164555-11">}</span><span·class="p"·data-group-id="9557164555-7">]</span></code></pre> | ||
| 681 | ··</section> | 681 | ··</section> |
| 682 | </section> | 682 | </section> |
| 683 | <section·class="detail"·id="normalize/1"> | 683 | <section·class="detail"·id="normalize/1"> |
| 684 | ··<div·class="detail-header"> | 684 | ··<div·class="detail-header"> |
| 685 | ····<a·href="#normalize/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 685 | ····<a·href="#normalize/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 686 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 686 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 707, 22 lines modified | Offset 707, 22 lines modified | ||
| 707 | ···················when·URI·::·<a·href="#t:uri_string/0">uri_string</a>()·|·<a·href="#t:uri_map/0">uri_map</a>(),·NormalizedURI·::·<a·href="#t:uri_string/0">uri_string</a>()·|·<a·href="#t:error/0">error</a>().</pre> | 707 | ···················when·URI·::·<a·href="#t:uri_string/0">uri_string</a>()·|·<a·href="#t:uri_map/0">uri_map</a>(),·NormalizedURI·::·<a·href="#t:uri_string/0">uri_string</a>()·|·<a·href="#t:error/0">error</a>().</pre> |
| 708 | ······</div> | 708 | ······</div> |
| 709 | <p>Transforms·an·<code·class="inline">URI</code>·into·a·normalized·form·using·Syntax-Based·Normalization·as | 709 | <p>Transforms·an·<code·class="inline">URI</code>·into·a·normalized·form·using·Syntax-Based·Normalization·as |
| 710 | defined·by·<a·href="https://www.ietf.org/rfc/rfc3986.txt">RFC·3986</a>.</p><p>This·function·implements·case·normalization,·percent-encoding·normalization, | 710 | defined·by·<a·href="https://www.ietf.org/rfc/rfc3986.txt">RFC·3986</a>.</p><p>This·function·implements·case·normalization,·percent-encoding·normalization, |
| 711 | path·segment·normalization·and·scheme·based·normalization·for·HTTP(S)·with·basic | 711 | path·segment·normalization·and·scheme·based·normalization·for·HTTP(S)·with·basic |
| 712 | support·for·FTP,·SSH,·SFTP·and·TFTP.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">normalize</span><span·class="p"·data-group-id=" | 712 | support·for·FTP,·SSH,·SFTP·and·TFTP.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">normalize</span><span·class="p"·data-group-id="1459387178-1">(</span><span·class="s">"/a/b/c/./../../g"</span><span·class="p"·data-group-id="1459387178-1">)</span><span·class="p">.</span><span·class="w"> |
| 713 | </span><span·class="s">"/a/g"</span><span·class="gp·unselectable"> | 713 | </span><span·class="s">"/a/g"</span><span·class="gp·unselectable"> |
| 714 | 2>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">normalize</span><span·class="p"·data-group-id=" | 714 | 2>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">normalize</span><span·class="p"·data-group-id="1459387178-2">(</span><span·class="p"·data-group-id="1459387178-3"><<</span><span·class="s">"mid/content=5/../6"</span><span·class="p"·data-group-id="1459387178-3">>></span><span·class="p"·data-group-id="1459387178-2">)</span><span·class="p">.</span><span·class="w"> |
| 715 | </span><span·class="p"·data-group-id=" | 715 | </span><span·class="p"·data-group-id="1459387178-4"><<</span><span·class="s">"mid/6"</span><span·class="p"·data-group-id="1459387178-4">>></span><span·class="gp·unselectable"> |
| 716 | 3>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">normalize</span><span·class="p"·data-group-id=" | 716 | 3>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">normalize</span><span·class="p"·data-group-id="1459387178-5">(</span><span·class="s">"http://localhost:80"</span><span·class="p"·data-group-id="1459387178-5">)</span><span·class="p">.</span><span·class="w"> |
| 717 | </span><span·class="s">"http://localhost/"</span><span·class="gp·unselectable"> | 717 | </span><span·class="s">"http://localhost/"</span><span·class="gp·unselectable"> |
| 718 | 4>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">normalize</span><span·class="p"·data-group-id=" | 718 | 4>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">normalize</span><span·class="p"·data-group-id="1459387178-6">(</span><span·class="p"·data-group-id="1459387178-7">#{</span><span·class="ss">scheme</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"http"</span><span·class="p">,</span><span·class="ss">port</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">80</span><span·class="p">,</span><span·class="ss">path</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"/a/b/c/./../../g"</span><span·class="p">,</span><span·class="gp·unselectable"> |
| 719 | 4>·</span><span·class="ss">host</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"localhost-örebro"</span><span·class="p"·data-group-id=" | 719 | 4>·</span><span·class="ss">host</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"localhost-örebro"</span><span·class="p"·data-group-id="1459387178-7">}</span><span·class="p"·data-group-id="1459387178-6">)</span><span·class="p">.</span><span·class="w"> |
| 720 | </span><span·class="s">"http://localhost-%C3%B6rebro/a/g"</span></code></pre> | 720 | </span><span·class="s">"http://localhost-%C3%B6rebro/a/g"</span></code></pre> |
| 721 | ··</section> | 721 | ··</section> |
| 722 | </section> | 722 | </section> |
| 723 | <section·class="detail"·id="normalize/2"> | 723 | <section·class="detail"·id="normalize/2"> |
| 724 | ··<div·class="detail-header"> | 724 | ··<div·class="detail-header"> |
| 725 | ····<a·href="#normalize/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 725 | ····<a·href="#normalize/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| Offset 749, 23 lines modified | Offset 749, 23 lines modified | ||
| 749 | ·······················Options·::·[return_map], | 749 | ·······················Options·::·[return_map], |
| 750 | ·······················NormalizedURI·::·<a·href="#t:uri_string/0">uri_string</a>()·|·<a·href="#t:uri_map/0">uri_map</a>()·|·<a·href="#t:error/0">error</a>().</pre> | 750 | ·······················NormalizedURI·::·<a·href="#t:uri_string/0">uri_string</a>()·|·<a·href="#t:uri_map/0">uri_map</a>()·|·<a·href="#t:error/0">error</a>().</pre> |
| 751 | ······</div> | 751 | ······</div> |
| 752 | <p>Same·as·<a·href="#normalize/1"><code·class="inline">normalize/1</code></a>·but·with·an·additional·<code·class="inline">Options</code> | 752 | <p>Same·as·<a·href="#normalize/1"><code·class="inline">normalize/1</code></a>·but·with·an·additional·<code·class="inline">Options</code> |
| 753 | parameter,·that·controls·whether·the·normalized·URI·shall·be·returned·as·an | 753 | parameter,·that·controls·whether·the·normalized·URI·shall·be·returned·as·an |
| 754 | uri_map().</p><p>There·is·one·supported·option:·<code·class="inline">return_map</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">normalize</span><span·class="p"·data-group-id=" | 754 | uri_map().</p><p>There·is·one·supported·option:·<code·class="inline">return_map</code>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">normalize</span><span·class="p"·data-group-id="4405979326-1">(</span><span·class="s">"/a/b/c/./../../g"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4405979326-2">[</span><span·class="ss">return_map</span><span·class="p"·data-group-id="4405979326-2">]</[·...·truncated·by·diffoscope;·len:·46,·SHA:·f4a73e5330fad5df251fb8c74ac9e4ad03d61d2549366feafa20d22b6d3487f7·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 755 | </span><span·class="p"·data-group-id=" | 755 | </span><span·class="p"·data-group-id="4405979326-3">#{</span><span·class="ss">path</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"/a/g"</span><span·class="p"·data-group-id="4405979326-3">}</span><span·class="gp·unselectable"> |
| 756 | 2>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">normalize</span><span·class="p"·data-group-id=" | 756 | 2>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">normalize</span><span·class="p"·data-group-id="4405979326-4">(</span><span·class="p"·data-group-id="4405979326-5"><<</span><span·class="s">"mid/content=5/../6"</span><span·class="p"·data-group-id="4405979326-5">>></span><span·class="p">,</span><span·class="w">·</span><span·class="[·...·truncated·by·diffoscope;·len:·168,·SHA:·5764f35107f62a1ad858f27007c601e58c20490c1c11e2cc1c96fcc96f5b7c1d·...·]-4">)</span><span·class="p">.</span><span·class="w"> |
| 757 | </span><span·class="p"·data-group-id=" | 757 | </span><span·class="p"·data-group-id="4405979326-7">#{</span><span·class="ss">path</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="4405979326-8"><<</span><span·class="s">"mid/6"</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·72,·SHA:·80cb9eea0ce858aaf75b9584a08cb5036b0d7a304e071621aa55900fadfb5da4·...·]-7">}</span><span·class="gp·unselectable"> |
| 758 | 3>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">normalize</span><span·class="p"·data-group-id=" | 758 | 3>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">normalize</span><span·class="p"·data-group-id="4405979326-9">(</span><span·class="s">"http://localhost:80"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4405979326-10">[</span><span·class="ss">return_map</span><span·class="p"·data-group-id="4405979326-10[·...·truncated·by·diffoscope;·len:·51,·SHA:·ac747d4d48b966780e4267bfcc436c342b4ab841bcf199df5df2ac7f0d297410·...·]-9">)</span><span·class="p">.</span><span·class="w"> |
| 759 | </span><span·class="p"·data-group-id=" | 759 | </span><span·class="p"·data-group-id="4405979326-11">#{</span><span·class="ss">scheme</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"http"</span><span·class="p">,</span><span·class="ss">path</span><span·class="w">·</span><span·class[·...·truncated·by·diffoscope;·len:·290,·SHA:·6dc7c77e93a635d56bad9b4c0d3a5da68ebefc8033ab036f28a76f970e819276·...·]-11">}</span><span·class="gp·unselectable"> |
| 760 | 4>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">normalize</span><span·class="p"·data-group-id=" | 760 | 4>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">normalize</span><span·class="p"·data-group-id="4405979326-12">(</span><span·class="p"·data-group-id="4405979326-13">#{</span><span·class="ss">scheme</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"http"</span><span·class="p">,</span><span·class="ss">port</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">80</span><span·class="p">,</span><span·class="ss">path</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"/a/b/c/./../../g"</span><span·class="p">,</span><span·class="gp·unselectable"> |
| 761 | 4>·</span><span·class="ss">host</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"localhost-örebro"</span><span·class="p"·data-group-id=" | 761 | 4>·</span><span·class="ss">host</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"localhost-örebro"</span><span·class="p"·data-group-id="4405979326-13">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4405979326-14">[</span><span·class="ss">return_map</span><span·class="p"·data-group-id="4405979326-14">]</span><span·class="p"·data-group-id="4405979326-12">)</span><span·class="p">.</span><span·class="w"> |
| 762 | </span><span·class="p"·data-group-id=" | 762 | </span><span·class="p"·data-group-id="4405979326-15">#{</span><span·class="ss">scheme</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"http"</span><span·class="p">,</span><span·class="ss">path</span><span·class="w">·</span><span·class[·...·truncated·by·diffoscope;·len:·300,·SHA:·a91823e899203f72c8bb1c8e8aafa638bcd70f402a1b5d81b740dc9224e989a4·...·]-15">}</span></code></pre> |
| 763 | ··</section> | 763 | ··</section> |
| 764 | </section> | 764 | </section> |
| 765 | <section·class="detail"·id="parse/1"> | 765 | <section·class="detail"·id="parse/1"> |
| 766 | ··<div·class="detail-header"> | 766 | ··<div·class="detail-header"> |
| 767 | ····<a·href="#parse/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 767 | ····<a·href="#parse/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 768 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 768 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 787, 22 lines modified | Offset 787, 22 lines modified | ||
| 787 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·parse(URIString)·->·URIMap·when·URIString·::·<a·href="#t:uri_string/0">uri_string</a>(),·URIMap·::·<a·href="#t:uri_map/0">uri_map</a>()·|·<a·href="#t:error/0">error</a>().</pre> | 787 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·parse(URIString)·->·URIMap·when·URIString·::·<a·href="#t:uri_string/0">uri_string</a>(),·URIMap·::·<a·href="#t:uri_map/0">uri_map</a>()·|·<a·href="#t:error/0">error</a>().</pre> |
| 788 | ······</div> | 788 | ······</div> |
| 789 | <p>Parses·an·<a·href="https://www.ietf.org/rfc/rfc3986.txt">RFC·3986</a>·compliant | 789 | <p>Parses·an·<a·href="https://www.ietf.org/rfc/rfc3986.txt">RFC·3986</a>·compliant |
| 790 | <a·href="#t:uri_string/0"><code·class="inline">uri_string/0</code></a>·into·a·<a·href="#t:uri_map/0"><code·class="inline">uri_map/0</code></a>,·that·holds·the·parsed·components·of·the | 790 | <a·href="#t:uri_string/0"><code·class="inline">uri_string/0</code></a>·into·a·<a·href="#t:uri_map/0"><code·class="inline">uri_map/0</code></a>,·that·holds·the·parsed·components·of·the |
| 791 | <code·class="inline">URI</code>.·If·parsing·fails,·an·error·tuple·is·returned.</p><p>See·also·the·opposite·operation·<a·href="#recompose/1"><code·class="inline">recompose/1</code></a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">parse</span><span·class="p"·data-group-id=" | 791 | <code·class="inline">URI</code>.·If·parsing·fails,·an·error·tuple·is·returned.</p><p>See·also·the·opposite·operation·<a·href="#recompose/1"><code·class="inline">recompose/1</code></a>.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">parse</span><span·class="p"·data-group-id="6920796814-1">(</span><span·class="s">"foo://user@example.com:8042/over/there?name=ferret#nose"</span><span·class="p"·data-group-id="6920796814-1">)</span><span·class="p">.</span><span·class="w"> |
| 792 | </span><span·class="p"·data-group-id=" | 792 | </span><span·class="p"·data-group-id="6920796814-2">#{</span><span·class="ss">fragment</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"nose"</span><span·class="p">,</span><span·class="ss">host</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"example.com"</span><span·class="p">,</span><span·class="w"> |
| 793 | ··</span><span·class="ss">path</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"/over/there"</span><span·class="p">,</span><span·class="ss">port</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">8042</span><span·class="p">,</span><span·class="k">query</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"name=ferret"</span><span·class="p">,</span><span·class="w"> | 793 | ··</span><span·class="ss">path</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"/over/there"</span><span·class="p">,</span><span·class="ss">port</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">8042</span><span·class="p">,</span><span·class="k">query</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"name=ferret"</span><span·class="p">,</span><span·class="w"> |
| 794 | ··</span><span·class="ss">scheme</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">foo</span><span·class="p">,</span><span·class="ss">userinfo</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"user"</span><span·class="p"·data-group-id=" | 794 | ··</span><span·class="ss">scheme</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">foo</span><span·class="p">,</span><span·class="ss">userinfo</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"user"</span><span·class="p"·data-group-id="6920796814-2">}</span><span·class="gp·unselectable"> |
| 795 | 2>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">parse</span><span·class="p"·data-group-id="7132460337-3">(</span><span·class="p"·data-group-id="7132460337-4"><<</span><span·class="s">"foo://user@example.com:8042/over/there?name=ferret"</span><span·class="p"·data-group-id="7132460337-4">>></span><span·class="p"·data-group-id="7132460337-3">)</span><span·class="p">.</span><span·class="w"> | ||
| 796 | </span><span·class= | 795 | 2>·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">parse</span><span·class="p"·data-group-id="6920796814-3">(</span><span·class="p"·data-group-id="6920796814-4"><<</span><span·class="s">"foo://user@example.co[·...·truncated·by·diffoscope;·len:·172,·SHA:·ba835cd9abab423e8573a948bc8c0fcc0a21f1ef20c0481557de72499d73d4d8·...·]</span><span·class="w"> |
| 796 | </span><span·class="p"·data-group-id="6920796814-5">#{</span><span·class="ss">host</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="6920796814-6"><<</span><span·class="s">"example.com"</span><span·class="p"·data-group-id="6920796814-6">>></span><span·class="p">,</span><span·class="ss">path</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="6920796814-7"><<</span><span·class="s">"/over/there"</span><span·class="p"·data-group-id="6920796814-7">>></span><span·class="p">,</span><span·class="w"> | ||
| 797 | ··</span><span·class="ss">port</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">8042</span><span·class="p">,</span><span·class="k">query</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 797 | ··</span><span·class="ss">port</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="mi">8042</span><span·class="p">,</span><span·class="k">query</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="6920796814-8"><<</span><span·class="s">"name=ferret"</span><span·class="p"·data-group-id="6920796814-8">>></span><span·class="p">,</span><span·class="ss">scheme</span><span·class="w">·</span><span·class="p">=></span><span·class="w"[·...·truncated·by·diffoscope;·len:·148,·SHA:·60376c93a3e90c6e12dcf8d3488c8157f2d214f5ff8a7119461b73ec0bfe3ee9·...·]-9">>></span><span·class="p">,</span><span·class="w"> |
| 798 | ··</span><span·class="ss">userinfo</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id=" | 798 | ··</span><span·class="ss">userinfo</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="6920796814-10"><<</span><span·class="s">"user"</span><span·class="p"·data-group-id="6920796814-10">>></span><span·class="p"·data-group-id="6920796814-5">}</span></code></pre> |
| 799 | ··</section> | 799 | ··</section> |
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| 190 | URI·components·using·<a·href="unicode_usage.html#what-unicode-is">Unicode</a>·characters. | 190 | URI·components·using·<a·href="unicode_usage.html#what-unicode-is">Unicode</a>·characters. |
| 191 | <a·href="uri_string.html#t:uri_map/0"><code·class="inline">uri_map()</code></a>·is·a·convenient·choice·for·enabling | 191 | <a·href="uri_string.html#t:uri_map/0"><code·class="inline">uri_map()</code></a>·is·a·convenient·choice·for·enabling |
| 192 | operations·such·as·producing·standard·compliant·URIs·out·of·components·that·have | 192 | operations·such·as·producing·standard·compliant·URIs·out·of·components·that·have |
| 193 | special·or·<a·href="unicode_usage.html#what-unicode-is">Unicode</a>·characters.·It·is·easier | 193 | special·or·<a·href="unicode_usage.html#what-unicode-is">Unicode</a>·characters.·It·is·easier |
| 194 | to·explain·this·by·an·example.</p><p>Let's·say·that·we·would·like·to·create·the·following·URI·and·send·it·over·the | 194 | to·explain·this·by·an·example.</p><p>Let's·say·that·we·would·like·to·create·the·following·URI·and·send·it·over·the |
| 195 | network:·<code·class="inline">http://cities/örebro?foo·bar</code>.·This·is·not·a·valid·URI·as·it·contains | 195 | network:·<code·class="inline">http://cities/örebro?foo·bar</code>.·This·is·not·a·valid·URI·as·it·contains |
| 196 | characters·that·are·not·allowed·in·a·URI·such·as·"ö"·and·the·space.·We·can | 196 | characters·that·are·not·allowed·in·a·URI·such·as·"ö"·and·the·space.·We·can |
| 197 | verify·this·by·parsing·the·URI:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··</span><span·class="mi">1</span><span·class="o">></span><span·class="w">·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">parse</span><span·class="p"·data-group-id=" | 197 | verify·this·by·parsing·the·URI:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··</span><span·class="mi">1</span><span·class="o">></span><span·class="w">·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">parse</span><span·class="p"·data-group-id="2253400698-1">(</span><span·class="s">"http://cities/örebro?foo·bar"</span><span·class="p"·data-group-id="2253400698-1">)</span><span·class="p">.</span><span·class="w"> |
| 198 | ··</span><span·class="p"·data-group-id=" | 198 | ··</span><span·class="p"·data-group-id="2253400698-2">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="ss">invalid_uri</span><span·class="p">,</span><span·class="s">":"</span><span·class="p"·data-group-id="2253400698-2">}</span></code></pre><p>The·URI·parser·tries·all·possible·combinations·to·interpret·the·input·and·fails |
| 199 | at·the·last·attempt·when·it·encounters·the·colon·character·<code·class="inline">":"</code>.·Note,·that·the | 199 | at·the·last·attempt·when·it·encounters·the·colon·character·<code·class="inline">":"</code>.·Note,·that·the |
| 200 | inital·fault·occurs·when·the·parser·attempts·to·interpret·the·character·<code·class="inline">"ö"</code> | 200 | inital·fault·occurs·when·the·parser·attempts·to·interpret·the·character·<code·class="inline">"ö"</code> |
| 201 | and·after·a·failure·back-tracks·to·the·point·where·it·has·another·possible | 201 | and·after·a·failure·back-tracks·to·the·point·where·it·has·another·possible |
| 202 | parsing·alternative.</p><p>The·proper·way·to·solve·this·problem·is·to·use·<a·href="uri_string.html#recompose/1"><code·class="inline">uri_string:recompose/1</code></a>·with·a | 202 | parsing·alternative.</p><p>The·proper·way·to·solve·this·problem·is·to·use·<a·href="uri_string.html#recompose/1"><code·class="inline">uri_string:recompose/1</code></a>·with·a |
| 203 | <a·href="uri_string.html#t:uri_map/0"><code·class="inline">uri_map()</code></a>·as·input:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··</span><span·class="mi">2</span><span·class="o">></span><span·class="w">·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">recompose</span><span·class="p"·data-group-id=" | 203 | <a·href="uri_string.html#t:uri_map/0"><code·class="inline">uri_map()</code></a>·as·input:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··</span><span·class="mi">2</span><span·class="o">></span><span·class="w">·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">recompose</span><span·class="p"·data-group-id="8227595836-1">(</span><span·class="p"·data-group-id="8227595836-2">#{</span><span·class="ss">scheme</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"http"</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">host</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"cities"</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">path</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"/örebro"</span><span·class="p">,</span><span·class="w"> |
| 204 | ··</span><span·class="k">query</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"foo·bar"</span><span·class="p"·data-group-id=" | 204 | ··</span><span·class="k">query</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"foo·bar"</span><span·class="p"·data-group-id="8227595836-2">}</span><span·class="p"·data-group-id="8227595836-1">)</span><span·class="p">.</span><span·class="w"> |
| 205 | ··</span><span·class="s">"http://cities/%C3%B6rebro?foo%20bar"</span></code></pre><p>The·result·is·a·valid·URI·where·all·the·special·characters·are·encoded·as | 205 | ··</span><span·class="s">"http://cities/%C3%B6rebro?foo%20bar"</span></code></pre><p>The·result·is·a·valid·URI·where·all·the·special·characters·are·encoded·as |
| 206 | defined·by·the·standard.·Applying·<a·href="uri_string.html#parse/1"><code·class="inline">uri_string:parse/1</code></a>·and | 206 | defined·by·the·standard.·Applying·<a·href="uri_string.html#parse/1"><code·class="inline">uri_string:parse/1</code></a>·and |
| 207 | <a·href="uri_string.html#percent_decode/1"><code·class="inline">uri_string:percent_decode/1</code></a>·on·the·URI·returns·the·original·input:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··</span><span·class="mi">3</span><span·class="o">></span><span·class="w">·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">percent_decode</span><span·class="p"·data-group-id=" | 207 | <a·href="uri_string.html#percent_decode/1"><code·class="inline">uri_string:percent_decode/1</code></a>·on·the·URI·returns·the·original·input:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··</span><span·class="mi">3</span><span·class="o">></span><span·class="w">·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">percent_decode</span><span·class="p"·data-group-id="7630916085-1">(</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">parse</span><span·class="p"·data-group-id="7630916085-2">(</span><span·class="s">"http://cities/%C3%B6rebro?foo%20bar"</span><span·class="p"·data-gro[·...·truncated·by·diffoscope;·len:·70,·SHA:·18f7ce25fb71be2c1b4f0bc5581536e8c0b6107300762bce20629408e17cbb59·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 208 | ··</span><span·class="p"·data-group-id=" | 208 | ··</span><span·class="p"·data-group-id="7630916085-3">#{</span><span·class="ss">host</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"cities"</span><span·class="p">,</span><span·class="ss">path</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"/örebro"</span><span·class="p">,</span><span·class="k">query</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"foo·bar"</span><span·class="p">,</span><span·class="w"> |
| 209 | ··</span><span·class="ss">scheme</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"http"</span><span·class="p"·data-group-id=" | 209 | ··</span><span·class="ss">scheme</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"http"</span><span·class="p"·data-group-id="7630916085-3">}</span></code></pre><p>This·symmetric·property·is·heavily·used·in·our·property·test·suite.</p><h2·id="percent-encoding"·class="section-heading"> |
| 210 | ··<a·href="#percent-encoding"·class="hover-link"> | 210 | ··<a·href="#percent-encoding"·class="hover-link"> |
| 211 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 211 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 212 | ··</a> | 212 | ··</a> |
| 213 | ··<span·class="text">Percent-encoding</span> | 213 | ··<span·class="text">Percent-encoding</span> |
| 214 | </h2> | 214 | </h2> |
| 215 | <p>As·you·have·seen·in·the·previous·chapter,·a·standard·URI·can·only·contain·a | 215 | <p>As·you·have·seen·in·the·previous·chapter,·a·standard·URI·can·only·contain·a |
| 216 | strict·subset·of·the·US·ASCII·character·set,·moreover·the·allowed·set·of | 216 | strict·subset·of·the·US·ASCII·character·set,·moreover·the·allowed·set·of |
| Offset 225, 72 lines modified | Offset 225, 72 lines modified | ||
| 225 | <a·href="unicode_usage.html#what-unicode-is">Unicode</a>·and·it·is·encoded·using·a·single | 225 | <a·href="unicode_usage.html#what-unicode-is">Unicode</a>·and·it·is·encoded·using·a·single |
| 226 | octet·<code·class="inline">0x20</code>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p><a·href="unicode_usage.html#what-unicode-is">Unicode</a>·is·backward·compatible·with·ASCII, | 226 | octet·<code·class="inline">0x20</code>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p><a·href="unicode_usage.html#what-unicode-is">Unicode</a>·is·backward·compatible·with·ASCII, |
| 227 | the·encoding·of·the·first·128·characters·is·the·same·binary·value·as·in·ASCII.</p></section><p><a·href=""·id="percent_encoding"></a>·It·is·a·major·source·of·confusion·exactly·which | 227 | the·encoding·of·the·first·128·characters·is·the·same·binary·value·as·in·ASCII.</p></section><p><a·href=""·id="percent_encoding"></a>·It·is·a·major·source·of·confusion·exactly·which |
| 228 | characters·will·be·percent-encoded.·In·order·to·make·it·easier·to·answer·this | 228 | characters·will·be·percent-encoded.·In·order·to·make·it·easier·to·answer·this |
| 229 | question·the·library·provides·a·utility·function, | 229 | question·the·library·provides·a·utility·function, |
| 230 | <a·href="uri_string.html#allowed_characters/0"><code·class="inline">uri_string:allowed_characters/0</code></a>,·that | 230 | <a·href="uri_string.html#allowed_characters/0"><code·class="inline">uri_string:allowed_characters/0</code></a>,·that |
| 231 | lists·the·allowed·set·of·characters·in·each·major·URI·component,·and·also·in·the | 231 | lists·the·allowed·set·of·characters·in·each·major·URI·component,·and·also·in·the |
| 232 | most·important·standard·character·sets.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">····</span><span·class="mi">1</span><span·class="o">></span><span·class="w">·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">allowed_characters</span><span·class="p"·data-group-id=" | 232 | most·important·standard·character·sets.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">····</span><span·class="mi">1</span><span·class="o">></span><span·class="w">·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">allowed_characters</span><span·class="p"·data-group-id="5918341858-1">(</span><span·class="p"·data-group-id="5918341858-1">)</span><span·class="p">.</span><span·class="w"> |
| 233 | ····</span><span·class="p"·data-group-id=" | 233 | ····</span><span·class="p"·data-group-id="5918341858-2">[</span><span·class="p"·data-group-id="5918341858-3">{</span><span·class="ss">scheme</span><span·class="p">,</span><span·class="w"> |
| 234 | ·····</span><span·class="s">"+-.0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"</span><span·class="p"·data-group-id=" | 234 | ·····</span><span·class="s">"+-.0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"</span><span·class="p"·data-group-id="5918341858-3">}</span><span·class="p">,</span><span·class="w"> |
| 235 | ····</span><span·class="p"·data-group-id=" | 235 | ····</span><span·class="p"·data-group-id="5918341858-4">{</span><span·class="ss">userinfo</span><span·class="p">,</span><span·class="w"> |
| 236 | ·····</span><span·class="s">"!$%&'()*+,-.0123456789:;=ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz~"</span><span·class="p"·data-group-id=" | 236 | ·····</span><span·class="s">"!$%&'()*+,-.0123456789:;=ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz~"</span><span·class="p"·data-group-id="5918341858-4">}</span><span·class="p">,</span><span·class="w"> |
| 237 | ····</span><span·class="p"·data-group-id=" | 237 | ····</span><span·class="p"·data-group-id="5918341858-5">{</span><span·class="ss">host</span><span·class="p">,</span><span·class="w"> |
| 238 | ·····</span><span·class="s">"!$&'()*+,-.0123456789:;=ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz~"</span><span·class="p"·data-group-id=" | 238 | ·····</span><span·class="s">"!$&'()*+,-.0123456789:;=ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz~"</span><span·class="p"·data-group-id="5918341858-5">}</span><span·class="p">,</span><span·class="w"> |
| 239 | ····</span><span·class="p"·data-group-id=" | 239 | ····</span><span·class="p"·data-group-id="5918341858-6">{</span><span·class="ss">ipv4</span><span·class="p">,</span><span·class="s">".0123456789"</span><span·class="p"·data-group-id="5918341858-6">}</span><span·class="p">,</span><span·class="w"> |
| 240 | ····</span><span·class="p"·data-group-id=" | 240 | ····</span><span·class="p"·data-group-id="5918341858-7">{</span><span·class="ss">ipv6</span><span·class="p">,</span><span·class="s">".0123456789:ABCDEFabcdef"</span><span·class="p"·data-group-id="5918341858-7">}</span><span·class="p">,</span><span·class="w"> |
| 241 | ····</span><span·class="p"·data-group-id=" | 241 | ····</span><span·class="p"·data-group-id="5918341858-8">{</span><span·class="ss">regname</span><span·class="p">,</span><span·class="w"> |
| 242 | ·····</span><span·class="s">"!$%&'()*+,-.0123456789;=ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz~"</span><span·class="p"·data-group-id=" | 242 | ·····</span><span·class="s">"!$%&'()*+,-.0123456789;=ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz~"</span><span·class="p"·data-group-id="5918341858-8">}</span><span·class="p">,</span><span·class="w"> |
| 243 | ····</span><span·class="p"·data-group-id=" | 243 | ····</span><span·class="p"·data-group-id="5918341858-9">{</span><span·class="ss">path</span><span·class="p">,</span><span·class="w"> |
| 244 | ·····</span><span·class="s">"!$%&'()*+,-./0123456789:;=@ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz~"</span><span·class="p"·data-group-id=" | 244 | ·····</span><span·class="s">"!$%&'()*+,-./0123456789:;=@ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz~"</span><span·class="p"·data-group-id="5918341858-9">}</span><span·class="p">,</span><span·class="w"> |
| 245 | ····</span><span·class="p"·data-group-id=" | 245 | ····</span><span·class="p"·data-group-id="5918341858-10">{</span><span·class="k">query</span><span·class="p">,</span><span·class="w"> |
| 246 | ·····</span><span·class="s">"!$%&'()*+,-./0123456789:;=?@ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz~"</span><span·class="p"·data-group-id=" | 246 | ·····</span><span·class="s">"!$%&'()*+,-./0123456789:;=?@ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz~"</span><span·class="p"·data-group-id="5918341858-10">}</span><span·class="p">,</span><span·class="w"> |
| 247 | ····</span><span·class="p"·data-group-id=" | 247 | ····</span><span·class="p"·data-group-id="5918341858-11">{</span><span·class="ss">fragment</span><span·class="p">,</span><span·class="w"> |
| 248 | ·····</span><span·class="s">"!$%&'()*+,-./0123456789:;=?@ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz~"</span><span·class="p"·data-group-id=" | 248 | ·····</span><span·class="s">"!$%&'()*+,-./0123456789:;=?@ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz~"</span><span·class="p"·data-group-id="5918341858-11">}</span><span·class="p">,</span><span·class="w"> |
| 249 | ····</span><span·class="p"·data-group-id=" | 249 | ····</span><span·class="p"·data-group-id="5918341858-12">{</span><span·class="ss">reserved</span><span·class="p">,</span><span·class="s">"!#$&'()*+,/:;=?@[]"</span><span·class="p"·data-group-id="5918341858-12">}</span><span·class="p">,</span><span·class="w"> |
| 250 | ····</span><span·class="p"·data-group-id=" | 250 | ····</span><span·class="p"·data-group-id="5918341858-13">{</span><span·class="ss">unreserved</span><span·class="p">,</span><span·class="w"> |
| 251 | ·····</span><span·class="s">"-.0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz~"</span><span·class="p"·data-group-id=" | 251 | ·····</span><span·class="s">"-.0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz~"</span><span·class="p"·data-group-id="5918341858-13">}</span><span·class="p"·data-group-id="5918341858-2">]</span></code></pre><p>If·a·URI·component·has·a·character·that·is·not·allowed,·it·will·be |
| 252 | percent-encoded·when·the·URI·is·produced:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">····</span><span·class="mi">2</span><span·class="o">></span><span·class="w">·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">recompose</span><span·class="p"·data-group-id=" | 252 | percent-encoded·when·the·URI·is·produced:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">····</span><span·class="mi">2</span><span·class="o">></span><span·class="w">·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">recompose</span><span·class="p"·data-group-id="4562777455-1">(</span><span·class="p"·data-group-id="4562777455-2">#{</span><span·class="ss">scheme</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"https"</span><span·class="p">,</span><span·clas[·...·truncated·by·diffoscope;·len:·444,·SHA:·654c21c1bd18d3c876a9ff5927dfc7b037934922c864529dc2aac071bcb9819e·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 253 | ····</span><span·class="s">"https://local%23host"</span></code></pre><p>Consuming·a·URI·containing·percent-encoded·triplets·can·take·many·steps.·The | 253 | ····</span><span·class="s">"https://local%23host"</span></code></pre><p>Consuming·a·URI·containing·percent-encoded·triplets·can·take·many·steps.·The |
| 254 | following·example·shows·how·to·handle·an·input·URI·that·is·not·normalized·and | 254 | following·example·shows·how·to·handle·an·input·URI·that·is·not·normalized·and |
| 255 | contains·multiple·percent-encoded·triplets.·First,·the·input | 255 | contains·multiple·percent-encoded·triplets.·First,·the·input |
| 256 | <a·href="uri_string.html#t:uri_string/0"><code·class="inline">uri_string()</code></a>·is·to·be·parsed·into·a | 256 | <a·href="uri_string.html#t:uri_string/0"><code·class="inline">uri_string()</code></a>·is·to·be·parsed·into·a |
| 257 | <a·href="uri_string.html#t:uri_map/0"><code·class="inline">uri_map()</code></a>.·The·parsing·only·splits·the·URI·into | 257 | <a·href="uri_string.html#t:uri_map/0"><code·class="inline">uri_map()</code></a>.·The·parsing·only·splits·the·URI·into |
| 258 | its·components·without·doing·any·decoding:</p><pre><code·class="text">····3>·uri_string:parse("http://%6C%6Fcal%23host/%F6re%26bro%20"). | 258 | its·components·without·doing·any·decoding:</p><pre><code·class="text">····3>·uri_string:parse("http://%6C%6Fcal%23host/%F6re%26bro%20"). |
| 259 | ····#{host·=>·"%6C%6Fcal%23host",path·=>·"/%F6re%26bro%20", | 259 | ····#{host·=>·"%6C%6Fcal%23host",path·=>·"/%F6re%26bro%20", |
| 260 | ······scheme·=>·"http"}}</code></pre><p>The·input·is·a·valid·URI·but·how·can·you·decode·those·percent-encoded·octets? | 260 | ······scheme·=>·"http"}}</code></pre><p>The·input·is·a·valid·URI·but·how·can·you·decode·those·percent-encoded·octets? |
| 261 | You·can·try·to·normalize·the·input·with·<a·href="uri_string.html#normalize/1"><code·class="inline">uri_string:normalize/1</code></a>.·The·normalize | 261 | You·can·try·to·normalize·the·input·with·<a·href="uri_string.html#normalize/1"><code·class="inline">uri_string:normalize/1</code></a>.·The·normalize |
| 262 | operation·decodes·those·percent-encoded·triplets·that·correspond·to·a·character | 262 | operation·decodes·those·percent-encoded·triplets·that·correspond·to·a·character |
| 263 | in·the·unreserved·set.·Normalization·is·a·safe,·idempotent·operation·that | 263 | in·the·unreserved·set.·Normalization·is·a·safe,·idempotent·operation·that |
| 264 | converts·a·URI·into·its·canonical·form:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">····</span><span·class="mi">4</span><span·class="o">></span><span·class="w">·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">normalize</span><span·class="p"·data-group-id=" | 264 | converts·a·URI·into·its·canonical·form:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">····</span><span·class="mi">4</span><span·class="o">></span><span·class="w">·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">normalize</span><span·class="p"·data-group-id="4861441037-1">(</span><span·class="s">"http://%6C%6Fcal%23host/%F6re%26bro%20"</span><span·class="p"·data-group-id="4861441037-1">)</span><span·class="p">.</span><span·class="w"> |
| 265 | ····</span><span·class="s">"http://local%23host/%F6re%26bro%20"</span><span·class="w"> | 265 | ····</span><span·class="s">"http://local%23host/%F6re%26bro%20"</span><span·class="w"> |
| 266 | ····</span><span·class="mi">5</span><span·class="o">></span><span·class="w">·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">normalize</span><span·class="p"·data-group-id=" | 266 | ····</span><span·class="mi">5</span><span·class="o">></span><span·class="w">·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">normalize</span><span·class="p"·data-group-id="4861441037-2">(</span><span·class="s">"http://%6C%6Fcal%23host/%F6re%26bro%20"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4861441037-3">[</span><span·class="ss">return_map</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·68,·SHA:·0d592d859ac1f63c9ded04d2a4083539a1b324fe28c0e89a69d883a11317b8db·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 267 | ····</span><span·class="p"·data-group-id=" | 267 | ····</span><span·class="p"·data-group-id="4861441037-4">#{</span><span·class="ss">host</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"local%23host"</span><span·class="p">,</span><span·class="ss">path</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"/%F6re%26bro%20"</span><span·class="p">,</span><span·class="w"> |
| 268 | ······</span><span·class="ss">scheme</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"http"</span><span·class="p"·data-group-id=" | 268 | ······</span><span·class="ss">scheme</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"http"</span><span·class="p"·data-group-id="4861441037-4">}</span></code></pre><p>There·are·still·a·few·percent-encoded·triplets·left·in·the·output.·At·this |
| 269 | point,·when·the·URI·is·already·parsed,·it·is·safe·to·apply·application·specific | 269 | point,·when·the·URI·is·already·parsed,·it·is·safe·to·apply·application·specific |
| 270 | decoding·on·the·remaining·character·triplets.·Erlang/OTP·provides·a·function, | 270 | decoding·on·the·remaining·character·triplets.·Erlang/OTP·provides·a·function, |
| 271 | <a·href="uri_string.html#percent_decode/1"><code·class="inline">uri_string:percent_decode/1</code></a>·for·raw·percent·decoding·that·you·can·use·on·the | 271 | <a·href="uri_string.html#percent_decode/1"><code·class="inline">uri_string:percent_decode/1</code></a>·for·raw·percent·decoding·that·you·can·use·on·the |
| 272 | host·and·path·components,·or·on·the·whole·map:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">····</span><span·class="mi">6</span><span·class="o">></span><span·class="w">·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">percent_decode</span><span·class="p"·data-group-id=" | 272 | host·and·path·components,·or·on·the·whole·map:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">····</span><span·class="mi">6</span><span·class="o">></span><span·class="w">·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">percent_decode</span><span·class="p"·data-group-id="0432158017-1">(</span><span·class="s">"local%23host"</span><span·class="p"·data-group-id="0432158017-1">)</span><span·class="p">.</span><span·class="w"> |
| 273 | ····</span><span·class="s">"local#host"</span><span·class="w"> | 273 | ····</span><span·class="s">"local#host"</span><span·class="w"> |
| 274 | ····</span><span·class="mi">7</span><span·class="o">></span><span·class="w">·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">percent_decode</span><span·class="p"·data-group-id=" | 274 | ····</span><span·class="mi">7</span><span·class="o">></span><span·class="w">·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">percent_decode</span><span·class="p"·data-group-id="0432158017-2">(</span><span·class="s">"/%F6re%26bro%20"</span><span·class="p"·data-group-id="0432158017-2">)</span><span·class="p">.</span><span·class="w"> |
| 275 | ····</span><span·class="p"·data-group-id=" | 275 | ····</span><span·class="p"·data-group-id="0432158017-3">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="ss">invalid_utf8</span><span·class="p">,</span><span·class="p"·data-group-id="0432158017-4"><<</span><span·class="s">"/öre&bro·"</span><span·class="[·...·truncated·by·diffoscope;·len:·88,·SHA:·bd51a1ba0b12b15764e90e22004641d3f30390918f201aca62b9b085b3873e53·...·]-3">}</span><span·class="w"> |
| 276 | ····</span><span·class="mi">8</span><span·class="o">></span><span·class="w">·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">percent_decode</span><span·class="p"·data-group-id=" | 276 | ····</span><span·class="mi">8</span><span·class="o">></span><span·class="w">·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">percent_decode</span><span·class="p"·data-group-id="0432158017-5">(</span><span·class="p"·data-group-id="0432158017-6">#{</span><span·class="ss">host</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"local%23host"</span><span·class="p">,</span><span·class="ss">path</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"/%F6re%26bro%20"</span><span·class="p">,</span><span·class="w"> |
| 277 | ····</span><span·class="ss">scheme</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"http"</span><span·class="p"·data-group-id=" | 277 | ····</span><span·class="ss">scheme</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="s">"http"</span><span·class="p"·data-group-id="0432158017-6">}</span><span·class="p"·data-group-id="0432158017-5">)</span><span·class="p">.</span><span·class="w"> |
| 278 | ····</span><span·class="p"·data-group-id=" | 278 | ····</span><span·class="p"·data-group-id="0432158017-7">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="p"·data-group-id="0432158017-8">{</span><span·class="ss">invalid</span><span·class="p">,</span><span·class="p"·data-group-id="0432158017-9">{</span><span·class="ss">pat[·...·truncated·by·diffoscope;·len:·517,·SHA:·f4a479694d85c13c4d0a854ab1ee5eb802f641d9b334d7ba670fad4e81044c64·...·]-7">}</span></code></pre><p>The·<code·class="inline">host</code>·was·successfully·decoded·but·the·path·contains·at·least·one·character |
| 279 | with·non-UTF-8·encoding.·In·order·to·be·able·to·decode·this,·you·have·to·make | 279 | with·non-UTF-8·encoding.·In·order·to·be·able·to·decode·this,·you·have·to·make |
| 280 | assumptions·about·the·encoding·used·in·these·triplets.·The·most·obvious·choice | 280 | assumptions·about·the·encoding·used·in·these·triplets.·The·most·obvious·choice |
| 281 | is·<em>latin-1</em>,·so·you·can·try·<a·href="uri_string.html#transcode/2"><code·class="inline">uri_string:transcode/2</code></a>,·to·transcode·the·path·to | 281 | is·<em>latin-1</em>,·so·you·can·try·<a·href="uri_string.html#transcode/2"><code·class="inline">uri_string:transcode/2</code></a>,·to·transcode·the·path·to |
| 282 | UTF-8·and·run·the·percent-decode·operation·on·the·transcoded·string:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">····</span><span·class="mi">9</span><span·class="o">></span><span·class="w">·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">transcode</span><span·class="p"·data-group-id=" | 282 | UTF-8·and·run·the·percent-decode·operation·on·the·transcoded·string:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">····</span><span·class="mi">9</span><span·class="o">></span><span·class="w">·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">transcode</span><span·class="p"·data-group-id="9195524679-1">(</span><span·class="s">"/%F6re%26bro%20"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9195524679-2">[</span><span·class="p"·data-group-id="9195524679-3">{</span><span·class="ss">in_encoding</[·...·truncated·by·diffoscope;·len:·230,·SHA:·d6029cc0170d3556156265f6e9e3e309476cf4097a2fb39d67ecf7c85c603ff0·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 283 | ····</span><span·class="s">"/%C3%B6re%26bro%20"</span><span·class="w"> | 283 | ····</span><span·class="s">"/%C3%B6re%26bro%20"</span><span·class="w"> |
| 284 | ····</span><span·class="mi">10</span><span·class="o">></span><span·class="w">·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">percent_decode</span><span·class="p"·data-group-id=" | 284 | ····</span><span·class="mi">10</span><span·class="o">></span><span·class="w">·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">percent_decode</span><span·class="p"·data-group-id="9195524679-4">(</span><span·class="s">"/%C3%B6re%26bro%20"</span><span·class="p"·data-group-id="9195524679-4">)</span><span·class="p">.</span><span·class="w"> |
| 285 | ····</span><span·class="s">"/öre&bro·"</span></code></pre><p>It·is·important·to·emphasize·that·it·is·not·safe·to·apply | 285 | ····</span><span·class="s">"/öre&bro·"</span></code></pre><p>It·is·important·to·emphasize·that·it·is·not·safe·to·apply |
| 286 | <a·href="uri_string.html#percent_decode/1"><code·class="inline">uri_string:percent_decode/1</code></a>·directly·on·an·input·URI:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">····</span><span·class="mi">11</span><span·class="o">></span><span·class="w">·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">percent_decode</span><span·class="p"·data-group-id=" | 286 | <a·href="uri_string.html#percent_decode/1"><code·class="inline">uri_string:percent_decode/1</code></a>·directly·on·an·input·URI:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">····</span><span·class="mi">11</span><span·class="o">></span><span·class="w">·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">percent_decode</span><span·class="p"·data-group-id="9629726998-1">(</span><span·class="s">"http://%6C%6Fcal%23host/%C3%B6re%26bro%20"</span><span·class="p"·data-group-id="9629726998-1">)</span><span·class="p">.</span><span·class="w"> |
| 287 | ····</span><span·class="s">"http://local#host/öre&bro·"</span><span·class="w"> | 287 | ····</span><span·class="s">"http://local#host/öre&bro·"</span><span·class="w"> |
| 288 | ····</span><span·class="mi">12</span><span·class="o">></span><span·class="w">·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">parse</span><span·class="p"·data-group-id=" | 288 | ····</span><span·class="mi">12</span><span·class="o">></span><span·class="w">·</span><span·class="nc">uri_string</span><span·class="p">:</span><span·class="nf">parse</span><span·class="p"·data-group-id="9629726998-2">(</span><span·class="s">"http://local#host/öre&bro·"</span><span·class="p"·data-group-id="9629726998-2">)</span><span·class="p">.</span><span·class="w"> |
| 289 | ····</span><span·class="p"·data-group-id=" | 289 | ····</span><span·class="p"·data-group-id="9629726998-3">{</span><span·class="ss">error</span><span·class="p">,</span><span·class="ss">invalid_uri</span><span·class="p">,</span><span·class="s">":"</span><span·class="p"·data-group-id="9629726998-3">}</span></code></pre><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>Percent-encoding·is·implemented·in·<a·href="uri_string.html#recompose/1"><code·class="inline">uri_string:recompose/1</code></a>·and·it·happens |
| 290 | when·converting·a·<a·href="uri_string.html#t:uri_map/0"><code·class="inline">uri_map()</code></a>·into·a | 290 | when·converting·a·<a·href="uri_string.html#t:uri_map/0"><code·class="inline">uri_map()</code></a>·into·a |
| 291 | <a·href="uri_string.html#t:uri_string/0"><code·class="inline">uri_string()</code></a>.·Applying·any·percent-encoding | 291 | <a·href="uri_string.html#t:uri_string/0"><code·class="inline">uri_string()</code></a>.·Applying·any·percent-encoding |
| 292 | directly·on·an·input·URI·would·not·be·safe·just·as·in·the·case·of | 292 | directly·on·an·input·URI·would·not·be·safe·just·as·in·the·case·of |
| 293 | <a·href="uri_string.html#percent_decode/1"><code·class="inline">uri_string:percent_decode/1</code></a>,·the·output·could·be·an·invalid·URI.·Quoting | 293 | <a·href="uri_string.html#percent_decode/1"><code·class="inline">uri_string:percent_decode/1</code></a>,·the·output·could·be·an·invalid·URI.·Quoting |
| 294 | functions·allow·users·to·perform·raw·percent·encoding·and·decoding·on | 294 | functions·allow·users·to·perform·raw·percent·encoding·and·decoding·on |
| 295 | application·data·which·cannot·be·handled·automatically·by | 295 | application·data·which·cannot·be·handled·automatically·by |
| 296 | <a·href="uri_string.html#recompose/1"><code·class="inline">uri_string:recompose/1</code></a>.·For·example·in·scenario·when·user·would·need·to·use | 296 | <a·href="uri_string.html#recompose/1"><code·class="inline">uri_string:recompose/1</code></a>.·For·example·in·scenario·when·user·would·need·to·use |
| Offset 1020, 37 lines modified | Offset 1020, 37 lines modified | ||
| 1020 | <code·class="inline">Archive</code>,·starting·with·<code·class="inline">AccIn·==·Acc0</code>.</p><p><code·class="inline">FileInArchive</code>·is·the·name·that·the·file·has·in·the·archive.</p><p><code·class="inline">GetInfo</code>·is·a·fun·that·returns·information·about·the·file.</p><p><code·class="inline">GetBin</code>·returns·the·file·contents.</p><p>Both·<code·class="inline">GetInfo</code>·and·<code·class="inline">GetBin</code>·must·be·called·within·the·<code·class="inline">Fun</code>.·Their·behavior·is | 1020 | <code·class="inline">Archive</code>,·starting·with·<code·class="inline">AccIn·==·Acc0</code>.</p><p><code·class="inline">FileInArchive</code>·is·the·name·that·the·file·has·in·the·archive.</p><p><code·class="inline">GetInfo</code>·is·a·fun·that·returns·information·about·the·file.</p><p><code·class="inline">GetBin</code>·returns·the·file·contents.</p><p>Both·<code·class="inline">GetInfo</code>·and·<code·class="inline">GetBin</code>·must·be·called·within·the·<code·class="inline">Fun</code>.·Their·behavior·is |
| 1021 | undefined·if·they·are·called·outside·the·context·of·<code·class="inline">Fun</code>.</p><p>The·<code·class="inline">Fun</code>·must·return·a·new·accumulator,·which·is·passed·to·the·next·call. | 1021 | undefined·if·they·are·called·outside·the·context·of·<code·class="inline">Fun</code>.</p><p>The·<code·class="inline">Fun</code>·must·return·a·new·accumulator,·which·is·passed·to·the·next·call. |
| 1022 | <a·href="#foldl/3"><code·class="inline">foldl/3</code></a>·returns·the·final·accumulator·value.·<code·class="inline">Acc0</code>·is·returned | 1022 | <a·href="#foldl/3"><code·class="inline">foldl/3</code></a>·returns·the·final·accumulator·value.·<code·class="inline">Acc0</code>·is·returned |
| 1023 | if·the·archive·is·empty.·It·is·not·necessary·to·iterate·over·all·files·in·the | 1023 | if·the·archive·is·empty.·It·is·not·necessary·to·iterate·over·all·files·in·the |
| 1024 | archive.·The·iteration·can·be·ended·prematurely·in·a·controlled·manner·by | 1024 | archive.·The·iteration·can·be·ended·prematurely·in·a·controlled·manner·by |
| 1025 | throwing·an·exception.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">Name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"dummy.zip"</span><span·class="p">.</span><span·class="w"> | 1025 | throwing·an·exception.</p><p><em>Example:</em></p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">>·</span><span·class="n">Name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="s">"dummy.zip"</span><span·class="p">.</span><span·class="w"> |
| 1026 | </span><span·class="s">"dummy.zip"</span><span·class="gp·unselectable"> | 1026 | </span><span·class="s">"dummy.zip"</span><span·class="gp·unselectable"> |
| 1027 | >·</span><span·class="p"·data-group-id=" | 1027 | >·</span><span·class="p"·data-group-id="8030138402-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8030138402-2">{</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Bin</span><span·[·...·truncated·by·diffoscope;·len:·1460,·SHA:·1dd9e5a9ae477c24dbe0b3abd4f2e1a6c60bff3e17025b8aeee8ca02e3f1165f·...·]-3">)</span><span·class="p">.</span><span·class="w"> |
| 1028 | </span><span·class="p"·data-group-id=" | 1028 | </span><span·class="p"·data-group-id="8030138402-10">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="8030138402-11">{</span><span·class="s">"dummy.zip"</span><span·class="p">,</span><span·class="w"> |
| 1029 | ·····</span><span·class="p"·data-group-id=" | 1029 | ·····</span><span·class="p"·data-group-id="8030138402-12"><<</span><span·class="mi">80</span><span·class="p">,</span><span·class="mi">75</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">20</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">74</span><span·class="p">,</span><span·class="mi">152</span><span·class="p">,</span><span·class="mi">97</span><span·class="p">,</span><span·class="mi">60</span><span·class="p">,</span><span·class="mi">171</span><span·class="p">,</span><span·class="mi">39</span><span·class="p">,</span><span·class="mi">212</span><span·class="p">,</span><span·class="mi">26</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="w"> |
| 1030 | ·······</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id=" | 1030 | ·······</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="8030138402-12">>></span><span·class="p"·data-group-id="8030138402-11">}</span><span·class="p"·data-group-id="8030138402-10">}</span><span·class="gp·unselectable"> |
| 1031 | >·</span><span·class="p"·data-group-id=" | 1031 | >·</span><span·class="p"·data-group-id="8030138402-13">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">FileSpec</span><span·class="p"·data-group-id="8030138402-13">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><s[·...·truncated·by·diffoscope;·len:·1787,·SHA:·82f5a9c22ea7c5a6743216d8e71f489bdd4df0453a55c0f98e1386cb8b9fd134·...·]-14">)</span><span·class="p">.</span><span·class="w"> |
| 1032 | </span><span·class="p"·data-group-id=" | 1032 | </span><span·class="p"·data-group-id="8030138402-22">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="8030138402-23">[</span><span·class="p"·data-group-id="8030138402-24">{</span><span·class="s">"bar"</span><span·class="p">,</span><span·class="[·...·truncated·by·diffoscope;·len:·127,·SHA:·1e354050420f0eefbc98ed0e8ad4c539b91276d27024fc1eaae5065a7cdbf453·...·]-25">>></span><span·class="p">,</span><span·class="w"> |
| 1033 | ······</span><span·class="p"·data-group-id=" | 1033 | ······</span><span·class="p"·data-group-id="8030138402-26">{</span><span·class="ss">file_info</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="ss">regular</span><span·class="p">,</span><span·class="ss">read_write</span><span·class="p">,</span><span·class="w"> |
| 1034 | ·················</span><span·class="p"·data-group-id=" | 1034 | ·················</span><span·class="p"·data-group-id="8030138402-27">{</span><span·class="p"·data-group-id="8030138402-28">{</span><span·class="mi">2010</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="8030138402-28">}</span[·...·truncated·by·diffoscope;·len:·299,·SHA:·159ce0116b850e4ec95a11e6c70502e850e6de0c64e4d3d05197785ae1ed0a7a·...·]-27">}</span><span·class="p">,</span><span·class="w"> |
| 1035 | ·················</span><span·class="p"·data-group-id=" | 1035 | ·················</span><span·class="p"·data-group-id="8030138402-30">{</span><span·class="p"·data-group-id="8030138402-31">{</span><span·class="mi">2010</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="8030138402-31">}</span[·...·truncated·by·diffoscope;·len:·299,·SHA:·9375e679532af2e3b400619d4533b503c35f5b1b3600da0c90a44120f012b896·...·]-30">}</span><span·class="p">,</span><span·class="w"> |
| 1036 | ·················</span><span·class="p"·data-group-id=" | 1036 | ·················</span><span·class="p"·data-group-id="8030138402-33">{</span><span·class="p"·data-group-id="8030138402-34">{</span><span·class="mi">2010</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="8030138402-34">}</span[·...·truncated·by·diffoscope;·len:·299,·SHA:·5e73020dc7db59ce315f4cad21974484c475cf35356f1820483edfaaaf20bc90·...·]-33">}</span><span·class="p">,</span><span·class="w"> |
| 1037 | ·················</span><span·class="mi">54</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p"·data-group-id=" | 1037 | ·················</span><span·class="mi">54</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p"·data-group-id="8030138402-26">}</span><span·class="p"·data-group-id="8030138402-24">}</span><span·class="p">,</span><span·class="w"> |
| 1038 | ·····</span><span·class="p"·data-group-id=" | 1038 | ·····</span><span·class="p"·data-group-id="8030138402-36">{</span><span·class="s">"foo"</span><span·class="p">,</span><span·class="p"·data-group-id="8030138402-37"><<</span><span·class="s">"FOO"</span><span·class="p"·data-group-id="8030138402-37">>></span><span·class="p">,</span><span·class="w"> |
| 1039 | ······</span><span·class="p"·data-group-id=" | 1039 | ······</span><span·class="p"·data-group-id="8030138402-38">{</span><span·class="ss">file_info</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="ss">regular</span><span·class="p">,</span><span·class="ss">read_write</span><span·class="p">,</span><span·class="w"> |
| 1040 | ·················</span><span·class="p"·data-group-id=" | 1040 | ·················</span><span·class="p"·data-group-id="8030138402-39">{</span><span·class="p"·data-group-id="8030138402-40">{</span><span·class="mi">2010</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="8030138402-40">}</span[·...·truncated·by·diffoscope;·len:·299,·SHA:·e7e34991e4acd293b315488dc93c0064f2576327a962352f2318adc8f5f2a39c·...·]-39">}</span><span·class="p">,</span><span·class="w"> |
| 1041 | ·················</span><span·class="p"·data-group-id=" | 1041 | ·················</span><span·class="p"·data-group-id="8030138402-42">{</span><span·class="p"·data-group-id="8030138402-43">{</span><span·class="mi">2010</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="8030138402-43">}</span[·...·truncated·by·diffoscope;·len:·299,·SHA:·343cd66015cea95d5c481511f5384ba8ac06e6aa0b9b0c4705a6dcb89604f7f3·...·]-42">}</span><span·class="p">,</span><span·class="w"> |
| 1042 | ·················</span><span·class="p"·data-group-id=" | 1042 | ·················</span><span·class="p"·data-group-id="8030138402-45">{</span><span·class="p"·data-group-id="8030138402-46">{</span><span·class="mi">2010</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="8030138402-46">}</span[·...·truncated·by·diffoscope;·len:·299,·SHA:·bfbb9c6f43cafb7cf4cda0f33bc97a80bb56dae4be2354771937a40c5684b137·...·]-45">}</span><span·class="p">,</span><span·class="w"> |
| 1043 | ·················</span><span·class="mi">54</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p"·data-group-id=" | 1043 | ·················</span><span·class="mi">54</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p"·data-group-id="8030138402-38">}</span><span·class="p"·data-group-id="8030138402-36">}</span><span·class="p"·data-group-id="8030138402-23">]</span><span·class="p"·data-group-id="8030138402-22">}</span><span·class="gp·unselectable"> |
| 1044 | >·</span><span·class="p"·data-group-id=" | 1044 | >·</span><span·class="p"·data-group-id="8030138402-48">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8030138402-49">{</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Bin</span><spa[·...·truncated·by·diffoscope;·len:·836,·SHA:·70f5e114f3454e57bc3be71fbaafe72a5667df962e999bd715df9dbd3307d9d1·...·]-50">)</span><span·class="p">.</span><span·class="w"> |
| 1045 | </span><span·class="p"·data-group-id=" | 1045 | </span><span·class="p"·data-group-id="8030138402-53">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="8030138402-54">{</span><span·class="s">"dummy.zip"</span><span·class="p">,</span><span·class="w"> |
| 1046 | ·····</span><span·class="p"·data-group-id=" | 1046 | ·····</span><span·class="p"·data-group-id="8030138402-55"><<</span><span·class="mi">80</span><span·class="p">,</span><span·class="mi">75</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">4</span><span·class="p">,</span><span·class="mi">20</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">74</span><span·class="p">,</span><span·class="mi">152</span><span·class="p">,</span><span·class="mi">97</span><span·class="p">,</span><span·class="mi">60</span><span·class="p">,</span><span·class="mi">171</span><span·class="p">,</span><span·class="mi">39</span><span·class="p">,</span><span·class="mi">212</span><span·class="p">,</span><span·class="mi">26</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="w"> |
| 1047 | ·······</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id=" | 1047 | ·······</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="8030138402-55">>></span><span·class="p"·data-group-id="8030138402-54">}</span><span·class="p"·data-group-id="8030138402-53">}</span><span·class="gp·unselectable"> |
| 1048 | >·</span><span·class="k">catch</span><span·class="w">·</span><span·class="nc">zip</span><span·class="p">:</span><span·class="nf">foldl</span><span·class="p"·data-group-id=" | 1048 | >·</span><span·class="k">catch</span><span·class="w">·</span><span·class="nc">zip</span><span·class="p">:</span><span·class="nf">foldl</span><span·class="p"·data-group-id="8030138402-56">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="8030138402-57">(</span><span·class="s">"foo"</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="p">,</span><span·class="w">·<[·...·truncated·by·diffoscope;·len:·1433,·SHA:·833691d218f8c1f62ca2cf19784e7158bb10e1bc524bfb3adb88910e1c51be18·...·]-56">)</span><span·class="p">.</span><span·class="w"> |
| 1049 | </span><span·class="p"·data-group-id=" | 1049 | </span><span·class="p"·data-group-id="8030138402-63"><<</span><span·class="s">"FOO"</span><span·class="p"·data-group-id="8030138402-63">>></span></code></pre> |
| 1050 | ··</section> | 1050 | ··</section> |
| 1051 | </section> | 1051 | </section> |
| 1052 | <section·class="detail"·id="list_dir/1"> | 1052 | <section·class="detail"·id="list_dir/1"> |
| 1053 | ··<div·class="detail-header"> | 1053 | ··<div·class="detail-header"> |
| 1054 | ····<a·href="#list_dir/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1054 | ····<a·href="#list_dir/1"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1055 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1055 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 6602, 18 lines modified | Offset 6602, 18 lines modified | ||
| 6602 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·get_postcomments(<a·href="#t:syntaxTree/0">syntaxTree</a>())·->·[<a·href="#t:syntaxTree/0">syntaxTree</a>()].</pre> | 6602 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·get_postcomments(<a·href="#t:syntaxTree/0">syntaxTree</a>())·->·[<a·href="#t:syntaxTree/0">syntaxTree</a>()].</pre> |
| 6603 | ······</div> | 6603 | ······</div> |
| 6604 | <p>Returns·the·associated·post-comments·of·a·node.</p><p>This·is·a·possibly·empty·list·of·abstract·comments,·in·top-down | 6604 | <p>Returns·the·associated·post-comments·of·a·node.</p><p>This·is·a·possibly·empty·list·of·abstract·comments,·in·top-down |
| 6605 | textual·order.·When·the·code·is·formatted,·post-comments·are·typically | 6605 | textual·order.·When·the·code·is·formatted,·post-comments·are·typically |
| 6606 | displayed·to·the·right·of·and/or·below·the·node.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 6606 | displayed·to·the·right·of·and/or·below·the·node.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="6033684824-1">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="n">X</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Y</span><span·class="p"·data-group-id="6033684824-1">}</span><span·class="w">·····</span><span·class="c1">%·Post-comment·of·tuple</span></code></pre><p>If·possible,·the·comment·should·be·moved·past·any·following·separator·characters |
| 6607 | on·the·same·line,·rather·than·placing·the·separators·on·the·following·line. | 6607 | on·the·same·line,·rather·than·placing·the·separators·on·the·following·line. |
| 6608 | For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">foo</span><span·class="p"·data-group-id=" | 6608 | For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">foo</span><span·class="p"·data-group-id="1108790378-1">(</span><span·class="p"·data-group-id="1108790378-2">[</span><span·class="n">X</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="n">Xs</span><span·class="p"·data-group-id="1108790378-2">]</span><span·c[·...·truncated·by·diffoscope;·len:·106,·SHA:·54db2b08ccc2f1632befcfb145fbe9ed10a5336880264bc6e7c1a1c6002cac16·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 6609 | ····</span><span·class="nf">foo</span><span·class="p"·data-group-id=" | 6609 | ····</span><span·class="nf">foo</span><span·class="p"·data-group-id="1108790378-3">(</span><span·class="n">Xs</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">bar</span><span·class="p"·data-group-id="1108790378-4">(</span><span·class="n">X</span><span·class="p"·data-group-id="1108790378-4">)</span><spa[·...·truncated·by·diffoscope;·len:·37,·SHA:·b88bde40fb56351c25366e8754d67b5c126c96bc3af57e0516cc7c7eb69c0faf·...·]-3">)</span><span·class="p">;</span><span·class="w">·····</span><span·class="c1">%·Post-comment·of·'bar(X)'·node</span><span·class="w"> |
| 6610 | ·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>(where·the·comment·is·moved·past·the·rightmost·"<code·class="inline">)</code>"·and·the·"<code·class="inline">;</code>").</p><p><em>See·also:·</em><a·href="#comment/2"><code·class="inline">comment/2</code></a>,·<a·href="#get_attrs/1"><code·class="inline">get_attrs/1</code></a>,·<a·href="#get_precomments/1"><code·class="inline">get_precomments/1</code></a>, | 6610 | ·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>(where·the·comment·is·moved·past·the·rightmost·"<code·class="inline">)</code>"·and·the·"<code·class="inline">;</code>").</p><p><em>See·also:·</em><a·href="#comment/2"><code·class="inline">comment/2</code></a>,·<a·href="#get_attrs/1"><code·class="inline">get_attrs/1</code></a>,·<a·href="#get_precomments/1"><code·class="inline">get_precomments/1</code></a>, |
| 6611 | <a·href="#set_postcomments/2"><code·class="inline">set_postcomments/2</code></a>.</p> | 6611 | <a·href="#set_postcomments/2"><code·class="inline">set_postcomments/2</code></a>.</p> |
| 6612 | ··</section> | 6612 | ··</section> |
| 6613 | </section> | 6613 | </section> |
| 6614 | <section·class="detail"·id="get_precomments/1"> | 6614 | <section·class="detail"·id="get_precomments/1"> |
| 6615 | ··<div·class="detail-header"> | 6615 | ··<div·class="detail-header"> |
| Offset 6636, 18 lines modified | Offset 6636, 18 lines modified | ||
| 6636 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·get_precomments(<a·href="#t:syntaxTree/0">syntaxTree</a>())·->·[<a·href="#t:syntaxTree/0">syntaxTree</a>()].</pre> | 6636 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·get_precomments(<a·href="#t:syntaxTree/0">syntaxTree</a>())·->·[<a·href="#t:syntaxTree/0">syntaxTree</a>()].</pre> |
| 6637 | ······</div> | 6637 | ······</div> |
| 6638 | <p>Returns·the·associated·pre-comments·of·a·node.</p><p>This·is·a·possibly·empty·list·of·abstract·comments,·in·top-down | 6638 | <p>Returns·the·associated·pre-comments·of·a·node.</p><p>This·is·a·possibly·empty·list·of·abstract·comments,·in·top-down |
| 6639 | textual·order.·When·the·code·is·formatted,·pre-comments·are·typically | 6639 | textual·order.·When·the·code·is·formatted,·pre-comments·are·typically |
| 6640 | displayed·directly·above·the·node.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·Pre-comment·of·function</span><span·class="w"> | 6640 | displayed·directly·above·the·node.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·Pre-comment·of·function</span><span·class="w"> |
| 6641 | </span><span·class="nf">foo</span><span·class="p"·data-group-id=" | 6641 | </span><span·class="nf">foo</span><span·class="p"·data-group-id="8772384359-1">(</span><span·class="n">X</span><span·class="p"·data-group-id="8772384359-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-group-id="8772384359-2">{</span><span·class="ss">bar</span><[·...·truncated·by·diffoscope;·len:·112,·SHA:·9f316a19b68cddc774554557c4ff585f1b7721da92e180cbe08e0c4360a0c9bb·...·]-2">}</span><span·class="p">.</span></code></pre><p>If·possible,·the·comment·should·be·moved·before·any·preceding·separator |
| 6642 | characters·on·the·same·line.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">foo</span><span·class="p"·data-group-id="4 | 6642 | characters·on·the·same·line.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">foo</span><span·class="p"·data-group-id="2457633372-1">(</span><span·class="p"·data-group-id="2457633372-2">[</span><span·class="n">X</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="n">Xs</span><span·class="p"·data-group-id="2457633372-2">]</span><span·c[·...·truncated·by·diffoscope;·len:·34,·SHA:·d57f789c75be6a37edff2f477bd6a993bf53f414557d0d81fbd54118aaa9d074·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 6643 | ····</span><span·class="c1">%·Pre-comment·of·'bar(X)'·node</span><span·class="w"> | 6643 | ····</span><span·class="c1">%·Pre-comment·of·'bar(X)'·node</span><span·class="w"> |
| 6644 | ····</span><span·class="p"·data-group-id="4 | 6644 | ····</span><span·class="p"·data-group-id="2457633372-3">[</span><span·class="nf">bar</span><span·class="p"·data-group-id="2457633372-4">(</span><span·class="n">X</span><span·class="p"·data-group-id="2457633372-4">)</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span[·...·truncated·by·diffoscope;·len:·194,·SHA:·d70d1cf9a591af8ea82723634ef8bb43de116290615dd06a6088431a56896467·...·]-3">]</span><span·class="p">;</span><span·class="w"> |
| 6645 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>(where·the·comment·is·moved·before·the·"<code·class="inline">[</code>").</p><p><em>See·also:·</em><a·href="#comment/2"><code·class="inline">comment/2</code></a>,·<a·href="#get_attrs/1"><code·class="inline">get_attrs/1</code></a>,·<a·href="#get_postcomments/1"><code·class="inline">get_postcomments/1</code></a>, | 6645 | </span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>(where·the·comment·is·moved·before·the·"<code·class="inline">[</code>").</p><p><em>See·also:·</em><a·href="#comment/2"><code·class="inline">comment/2</code></a>,·<a·href="#get_attrs/1"><code·class="inline">get_attrs/1</code></a>,·<a·href="#get_postcomments/1"><code·class="inline">get_postcomments/1</code></a>, |
| 6646 | <a·href="#set_precomments/2"><code·class="inline">set_precomments/2</code></a>.</p> | 6646 | <a·href="#set_precomments/2"><code·class="inline">set_precomments/2</code></a>.</p> |
| 6647 | ··</section> | 6647 | ··</section> |
| 6648 | </section> | 6648 | </section> |
| 6649 | <section·class="detail"·id="has_comments/1"> | 6649 | <section·class="detail"·id="has_comments/1"> |
| 6650 | ··<div·class="detail-header"> | 6650 | ··<div·class="detail-header"> |
| Offset 134, 38 lines modified | Offset 134, 38 lines modified | ||
| 134 | Merl·itself,·see·the·documentation·of·<a·href="erl_syntax.html"><code·class="inline">erl_syntax</code></a>.</p><h3·id="module-quick-start"·class="section-heading"> | 134 | Merl·itself,·see·the·documentation·of·<a·href="erl_syntax.html"><code·class="inline">erl_syntax</code></a>.</p><h3·id="module-quick-start"·class="section-heading"> |
| 135 | ··<a·href="#module-quick-start"·class="hover-link"> | 135 | ··<a·href="#module-quick-start"·class="hover-link"> |
| 136 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 136 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 137 | ··</a> | 137 | ··</a> |
| 138 | ··<span·class="text">Quick·start</span> | 138 | ··<span·class="text">Quick·start</span> |
| 139 | </h3> | 139 | </h3> |
| 140 | <p>To·enable·the·full·power·of·Merl,·your·module·needs·to·include·the·Merl·header | 140 | <p>To·enable·the·full·power·of·Merl,·your·module·needs·to·include·the·Merl·header |
| 141 | file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id=" | 141 | file:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include_lib</span><span·class="p"·data-group-id="8672669803-1">(</span><span·class="s">"syntax_tools/include/merl.hrl"</span><span·class="p"·data-group-id="8672669803-1">)</span><span·class="p">.</span></code></pre><p>Then,·you·can·use·the·<code·class="inline">?Q(Text)</code>·macros·in·your·code·to·create·ASTs·or·match·on |
| 142 | existing·ASTs.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Tuple</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id=" | 142 | existing·ASTs.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Tuple</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id="6168164786-1">(</span><span·class="s">"{foo,·42}"</span><span·class="p"·data-group-id="6168164786-1">)</span><span·class="p">,</span><span·class="w"> |
| 143 | </span><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id=" | 143 | </span><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id="6168164786-2">(</span><span·class="s">"{foo,·_@Number}"</span><span·class="p"·data-group-id="6168164786-2">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Tuple</span><span·class="p">,</span><span·class="w"> |
| 144 | </span><span·class="n">Call</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id=" | 144 | </span><span·class="n">Call</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id="6168164786-3">(</span><span·class="s">"foo:bar(_@Number)"</span><span·class="p"·data-group-id="6168164786-3">)</span></code></pre><p>Calling·<code·class="inline">merl:print(Call)</code>·will·then·print·the·following·code:</p><pre><code·class="mak[·...·truncated·by·diffoscope;·len:·225,·SHA:·7cef937fc1933de4a6ba7b3f34ed5cd4ede2e556a01ce929e7811be1880211b0·...·]-1">)</span></code></pre><p>The·<code·class="inline">?Q</code>·macros·turn·the·quoted·code·fragments·into·ASTs,·and·lifts |
| 145 | metavariables·such·as·<code·class="inline">_@Tuple</code>·and·<code·class="inline">_@Number</code>·to·the·level·of·your·Erlang·code, | 145 | metavariables·such·as·<code·class="inline">_@Tuple</code>·and·<code·class="inline">_@Number</code>·to·the·level·of·your·Erlang·code, |
| 146 | so·you·can·use·the·corresponding·Erlang·variables·<code·class="inline">Tuple</code>·and·<code·class="inline">Number</code>·directly. | 146 | so·you·can·use·the·corresponding·Erlang·variables·<code·class="inline">Tuple</code>·and·<code·class="inline">Number</code>·directly. |
| 147 | This·is·the·most·straightforward·way·to·use·Merl,·and·in·many·cases·it's·all·you | 147 | This·is·the·most·straightforward·way·to·use·Merl,·and·in·many·cases·it's·all·you |
| 148 | need.</p><p>You·can·even·write·case·switches·using·<code·class="inline">?Q</code>·macros·as·patterns.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">case</span><span·class="w">·</span><span·class="n">AST</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> | 148 | need.</p><p>You·can·even·write·case·switches·using·<code·class="inline">?Q</code>·macros·as·patterns.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">case</span><span·class="w">·</span><span·class="n">AST</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 149 | ····</span><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id=" | 149 | ····</span><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id="3774649004-1">(</span><span·class="s">"{foo,·_@Foo}"</span><span·class="p"·data-group-id="3774649004-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">handle</span><span·class="p"·data-group-i[·...·truncated·by·diffoscope;·len:·92,·SHA:·4d0c8f247c108f72b574d208dfb69563d1f64b0e42e32ebcc41de29ad0353f0c·...·]-2">)</span><span·class="p">;</span><span·class="w"> |
| 150 | ····</span><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id=" | 150 | ····</span><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id="3774649004-3">(</span><span·class="s">"{bar,·_@Bar}"</span><span·class="p"·data-group-id="3774649004-3">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nc">erl_syntax</span><span·class="p">:</span><[·...·truncated·by·diffoscope;·len:·391,·SHA:·11bafa56b3b1d40f01f497c33654c85270955289c2fc78a7c248228976a6ec7b·...·]-5">)</span><span·class="p">;</span><span·class="w"> |
| 151 | ····</span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">handle_default</span><span·class="p"·data-group-id=" | 151 | ····</span><span·class="p">_</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">handle_default</span><span·class="p"·data-group-id="3774649004-6">(</span><span·class="p"·data-group-id="3774649004-6">)</span><span·class="w"> |
| 152 | </span><span·class="k">end</span></code></pre><p>These·case·switches·only·allow·<code·class="inline">?Q(...)</code>·or·<code·class="inline">_</code>·as·clause·patterns,·and·the | 152 | </span><span·class="k">end</span></code></pre><p>These·case·switches·only·allow·<code·class="inline">?Q(...)</code>·or·<code·class="inline">_</code>·as·clause·patterns,·and·the |
| 153 | guards·may·contain·any·expressions,·not·just·Erlang·guard·expressions.</p><p>If·the·macro·<code·class="inline">MERL_NO_TRANSFORM</code>·is·defined·before·the·<code·class="inline">merl.hrl</code>·header·file·is | 153 | guards·may·contain·any·expressions,·not·just·Erlang·guard·expressions.</p><p>If·the·macro·<code·class="inline">MERL_NO_TRANSFORM</code>·is·defined·before·the·<code·class="inline">merl.hrl</code>·header·file·is |
| 154 | included,·the·parse·transform·used·by·Merl·will·be·disabled,·and·in·that·case, | 154 | included,·the·parse·transform·used·by·Merl·will·be·disabled,·and·in·that·case, |
| 155 | the·match·expressions·<code·class="inline">?Q(...)·=·...</code>,·case·switches·using·<code·class="inline">?Q(...)</code>·patterns, | 155 | the·match·expressions·<code·class="inline">?Q(...)·=·...</code>,·case·switches·using·<code·class="inline">?Q(...)</code>·patterns, |
| 156 | and·automatic·metavariables·like·<code·class="inline">_@Tuple</code>·cannot·be·used·in·your·code,·but·the | 156 | and·automatic·metavariables·like·<code·class="inline">_@Tuple</code>·cannot·be·used·in·your·code,·but·the |
| 157 | Merl·macros·and·functions·still·work.·To·do·metavariable·substitution,·you·need | 157 | Merl·macros·and·functions·still·work.·To·do·metavariable·substitution,·you·need |
| 158 | to·use·the·<code·class="inline">?Q(Text,·Map)</code>·macro.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Tuple</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id="83 | 158 | to·use·the·<code·class="inline">?Q(Text,·Map)</code>·macro.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Tuple</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id="4836460370-1">(</span><span·class="s">"{foo,·_@bar,·_@baz}"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4836460370-2">[</span><span·class="p"·data-group-id="4836460370-3">{</span><span·class="ss">bar</span[·...·truncated·by·diffoscope;·len:·452,·SHA:·db2dec4007e6472ded4e0c08172da0c457f7b452feb53149ef6fc1201f646874·...·]0-1">)</span></code></pre><p>The·text·given·to·a·<code·class="inline">?Q(Text)</code>·macro·can·be·either·a·single·string·or·a·list·of |
| 159 | strings.·The·latter·is·useful·when·you·need·to·split·a·long·expression·over | 159 | strings.·The·latter·is·useful·when·you·need·to·split·a·long·expression·over |
| 160 | multiple·lines.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id=" | 160 | multiple·lines.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id="9138816309-1">(</span><span·class="p"·data-group-id="9138816309-2">[</span><span·class="s">"case·_@Expr·of"</span><span·class="p">,</span><span·class="w"> |
| 161 | ····</span><span·class="s">"··{foo,·X}·->·f(X);"</span><span·class="p">,</span><span·class="w"> | 161 | ····</span><span·class="s">"··{foo,·X}·->·f(X);"</span><span·class="p">,</span><span·class="w"> |
| 162 | ····</span><span·class="s">"··{bar,·X}·->·g(X)"</span><span·class="p">,</span><span·class="w"> | 162 | ····</span><span·class="s">"··{bar,·X}·->·g(X)"</span><span·class="p">,</span><span·class="w"> |
| 163 | ····</span><span·class="s">"··_·->·h(X)"</span><span·class="w"> | 163 | ····</span><span·class="s">"··_·->·h(X)"</span><span·class="w"> |
| 164 | </span><span·class="s">"end"</span><span·class="p"·data-group-id=" | 164 | </span><span·class="s">"end"</span><span·class="p"·data-group-id="9138816309-2">]</span><span·class="p"·data-group-id="9138816309-1">)</span></code></pre><p>If·there·is·a·syntax·error·somewhere·in·the·text·(like·the·missing·semicolon·in |
| 165 | the·second·clause·above)·this·allows·Merl·to·generate·an·error·message·pointing | 165 | the·second·clause·above)·this·allows·Merl·to·generate·an·error·message·pointing |
| 166 | to·the·exact·line·in·your·source·code.·(Just·remember·to·comma-separate·the | 166 | to·the·exact·line·in·your·source·code.·(Just·remember·to·comma-separate·the |
| 167 | strings·in·the·list,·otherwise·Erlang·will·concatenate·the·string·fragments·as | 167 | strings·in·the·list,·otherwise·Erlang·will·concatenate·the·string·fragments·as |
| 168 | if·they·were·a·single·string.)</p><h3·id="module-metavariable-syntax"·class="section-heading"> | 168 | if·they·were·a·single·string.)</p><h3·id="module-metavariable-syntax"·class="section-heading"> |
| 169 | ··<a·href="#module-metavariable-syntax"·class="hover-link"> | 169 | ··<a·href="#module-metavariable-syntax"·class="hover-link"> |
| 170 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 170 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 171 | ··</a> | 171 | ··</a> |
| Offset 180, 73 lines modified | Offset 180, 73 lines modified | ||
| 180 | note·that·globs·only·matter·for·matching;·when·doing·substitutions,·a·non-glob | 180 | note·that·globs·only·matter·for·matching;·when·doing·substitutions,·a·non-glob |
| 181 | variable·can·be·used·to·inject·a·sequence·of·elements,·and·vice·versa.)</p><p>If·the·name·after·the·prefix·and·any·lift·and·glob·markers·is·<code·class="inline">_</code>·or·<code·class="inline">0</code>,·the | 181 | variable·can·be·used·to·inject·a·sequence·of·elements,·and·vice·versa.)</p><p>If·the·name·after·the·prefix·and·any·lift·and·glob·markers·is·<code·class="inline">_</code>·or·<code·class="inline">0</code>,·the |
| 182 | variable·is·treated·as·an·anonymous·catch-all·pattern·in·matches.·For·example, | 182 | variable·is·treated·as·an·anonymous·catch-all·pattern·in·matches.·For·example, |
| 183 | <code·class="inline">_@_</code>,·<code·class="inline">_@@_</code>,·<code·class="inline">_@__</code>,·or·even·<code·class="inline">_@__@_</code>.</p><p>Finally,·if·the·name·without·any·prefixes·or·lift/glob·markers·begins·with·an | 183 | <code·class="inline">_@_</code>,·<code·class="inline">_@@_</code>,·<code·class="inline">_@__</code>,·or·even·<code·class="inline">_@__@_</code>.</p><p>Finally,·if·the·name·without·any·prefixes·or·lift/glob·markers·begins·with·an |
| 184 | uppercase·character,·as·in·<code·class="inline">_@Foo</code>·or·<code·class="inline">_@_@Foo</code>,·it·will·become·a·variable·on | 184 | uppercase·character,·as·in·<code·class="inline">_@Foo</code>·or·<code·class="inline">_@_@Foo</code>,·it·will·become·a·variable·on |
| 185 | the·Erlang·level,·and·can·be·used·to·easily·deconstruct·and·construct·syntax | 185 | the·Erlang·level,·and·can·be·used·to·easily·deconstruct·and·construct·syntax |
| 186 | trees:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">case</span><span·class="w">·</span><span·class="n">Input</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> | 186 | trees:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">case</span><span·class="w">·</span><span·class="n">Input</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 187 | ····</span><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id=" | 187 | ····</span><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id="7623907412-1">(</span><span·class="s">"{foo,·_@Number}"</span><span·class="p"·data-group-id="7623907412-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="o">?</span><span·class="n">Q</span><span·c[·...·truncated·by·diffoscope;·len:·139,·SHA:·d07f5858c7232f102ec7eeafa07f554498321e7ef2a636a42ad8386592082627·...·]-2">)</span><span·class="p">;</span><span·class="w"> |
| 188 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>We·refer·to·these·as·"automatic·metavariables".·If·in·addition·the·name·ends | 188 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>We·refer·to·these·as·"automatic·metavariables".·If·in·addition·the·name·ends |
| 189 | with·<code·class="inline">@</code>,·as·in·<code·class="inline">_@Foo@</code>,·the·value·of·the·variable·as·an·Erlang·term·will·be | 189 | with·<code·class="inline">@</code>,·as·in·<code·class="inline">_@Foo@</code>,·the·value·of·the·variable·as·an·Erlang·term·will·be |
| 190 | automatically·converted·to·the·corresponding·abstract·syntax·tree·when·used·to | 190 | automatically·converted·to·the·corresponding·abstract·syntax·tree·when·used·to |
| 191 | construct·a·larger·tree.·For·example,·in:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Bar</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4 | 191 | construct·a·larger·tree.·For·example,·in:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Bar</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="1414352635-1">{</span><span·class="ss">bar</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">42</span><span·class="p"·data-group-id="1414352635-1">}</span><span·class="p">,</span><span·class="w"> |
| 192 | </span><span·class="n">Foo</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id="4 | 192 | </span><span·class="n">Foo</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id="1414352635-2">(</span><span·class="s">"{foo,·_@Bar@}"</span><span·class="p"·data-group-id="1414352635-2">)</span></code></pre><p>(where·Bar·is·just·some·term,·not·a·syntax·tree)·the·result·<code·class="inline">Foo</code>·will·be·a |
| 193 | syntax·tree·representing·<code·class="inline">{foo,·{bar,·42}}</code>.·This·avoids·the·need·for·temporary | 193 | syntax·tree·representing·<code·class="inline">{foo,·{bar,·42}}</code>.·This·avoids·the·need·for·temporary |
| 194 | variables·in·order·to·inject·data,·as·in</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">TmpBar</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erl_syntax</span><span·class="p">:</span><span·class="nf">abstract</span><span·class="p"·data-group-id=" | 194 | variables·in·order·to·inject·data,·as·in</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">TmpBar</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erl_syntax</span><span·class="p">:</span><span·class="nf">abstract</span><span·class="p"·data-group-id="5188767760-1">(</span><span·class="n">Bar</span><span·class="p"·data-group-id="5188767760-1">)</span><span·class="p">,</span><span·class="w"> |
| 195 | </span><span·class="n">Foo</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id=" | 195 | </span><span·class="n">Foo</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id="5188767760-2">(</span><span·class="s">"{foo,·_@TmpBar}"</span><span·class="p"·data-group-id="5188767760-2">)</span></code></pre><p>If·the·context·requires·an·integer·rather·than·a·variable,·an·atom,·or·a·string, |
| 196 | you·cannot·use·the·uppercase·convention·to·mark·an·automatic·metavariable. | 196 | you·cannot·use·the·uppercase·convention·to·mark·an·automatic·metavariable. |
| 197 | Instead,·if·the·integer·(without·the·<code·class="inline">909</code>-prefix·and·lift/glob·markers)·ends | 197 | Instead,·if·the·integer·(without·the·<code·class="inline">909</code>-prefix·and·lift/glob·markers)·ends |
| 198 | in·a·<code·class="inline">9</code>,·the·integer·will·become·an·Erlang-level·variable·prefixed·with·<code·class="inline">Q</code>, | 198 | in·a·<code·class="inline">9</code>,·the·integer·will·become·an·Erlang-level·variable·prefixed·with·<code·class="inline">Q</code>, |
| 199 | and·if·it·ends·with·<code·class="inline">99</code>·it·will·also·be·automatically·abstracted.·For·example, | 199 | and·if·it·ends·with·<code·class="inline">99</code>·it·will·also·be·automatically·abstracted.·For·example, |
| 200 | the·following·will·increment·the·arity·of·the·exported·function·f:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">case</span><span·class="w">·</span><span·class="n">Form</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> | 200 | the·following·will·increment·the·arity·of·the·exported·function·f:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="k">case</span><span·class="w">·</span><span·class="n">Form</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 201 | ····</span><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id=" | 201 | ····</span><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id="5511853232-1">(</span><span·class="s">"-export([f/90919])."</span><span·class="p"·data-group-id="5511853232-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 202 | ········</span><span·class="n">Q2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erl_syntax</span><span·class="p">:</span><span·class="nf">concrete</span><span·class="p"·data-group-id=" | 202 | ········</span><span·class="n">Q2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">erl_syntax</span><span·class="p">:</span><span·class="nf">concrete</span><span·class="p"·data-group-id="5511853232-2">(</span><span·class="n">Q1</span><span·class="p"·data-group-id="5511853232-2">)</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> |
| 203 | ········</span><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id=" | 203 | ········</span><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id="5511853232-3">(</span><span·class="s">"-export([f/909299])."</span><span·class="p"·data-group-id="5511853232-3">)</span><span·class="p">;</span><span·class="w"> |
| 204 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><h3·id="module-when-to-use-the-various-forms-of-metavariables"·class="section-heading"> | 204 | ····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><h3·id="module-when-to-use-the-various-forms-of-metavariables"·class="section-heading"> |
| 205 | ··<a·href="#module-when-to-use-the-various-forms-of-metavariables"·class="hover-link"> | 205 | ··<a·href="#module-when-to-use-the-various-forms-of-metavariables"·class="hover-link"> |
| 206 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 206 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 207 | ··</a> | 207 | ··</a> |
| 208 | ··<span·class="text">When·to·use·the·various·forms·of·metavariables</span> | 208 | ··<span·class="text">When·to·use·the·various·forms·of·metavariables</span> |
| 209 | </h3> | 209 | </h3> |
| 210 | <p>Merl·can·only·parse·a·fragment·of·text·if·it·follows·the·basic·syntactical·rules | 210 | <p>Merl·can·only·parse·a·fragment·of·text·if·it·follows·the·basic·syntactical·rules |
| 211 | of·Erlang.·In·most·places,·a·normal·Erlang·variable·can·be·used·as·metavariable, | 211 | of·Erlang.·In·most·places,·a·normal·Erlang·variable·can·be·used·as·metavariable, |
| 212 | for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id=" | 212 | for·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id="7355286456-1">(</span><span·class="s">"f(_@Arg)"</span><span·class="p"·data-group-id="7355286456-1">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Expr</span></code></pre><p>but·if·you·want·to·match·on·something·like·the·name·of·a·function,·you·have·to |
| 213 | use·an·atom·as·metavariable:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id=" | 213 | use·an·atom·as·metavariable:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id="3435465962-1">(</span><span·class="s">"'@Name'()·->·_@@_."</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">Function</span></code></pre><p>(note·the·anonymous·glob·variable·<code·class="inline">_@@_</code>·to·ignore·the·function·body).</p><p>In·some·contexts,·only·a·string·or·an·integer·is·allowed.·For·example,·the |
| 214 | directive·<code·class="inline">-file(Name,·Line)</code>·requires·that·<code·class="inline">Name</code>·is·a·string·literal·and | 214 | directive·<code·class="inline">-file(Name,·Line)</code>·requires·that·<code·class="inline">Name</code>·is·a·string·literal·and |
| 215 | <code·class="inline">Line</code>·an·integer·literal:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id=" | 215 | <code·class="inline">Line</code>·an·integer·literal:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id="1430206672-1">(</span><span·class="s">"-file(\"'@File\",·9090)."</span><span·class="p"·data-group-id="1430206672-1">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">?</span><span·class=[·...·truncated·by·diffoscope;·len:·174,·SHA:·c9f63a24fcdbbb622e3064041830a56ade8b2605ab211569da4bec929f029f2a·...·]-2">)</span><span·class="p">)</span><span·class="p">.</span></code></pre><p>This·will·extract·the·string·literal·<code·class="inline">"foo.erl"</code>·into·the·variable·<code·class="inline">Foo</code>.·Note |
| 216 | the·use·of·the·anonymous·variable·<code·class="inline">9090</code>·to·ignore·the·line·number.·To·match·and | 216 | the·use·of·the·anonymous·variable·<code·class="inline">9090</code>·to·ignore·the·line·number.·To·match·and |
| 217 | also·bind·a·metavariable·that·must·be·an·integer·literal,·we·can·use·the | 217 | also·bind·a·metavariable·that·must·be·an·integer·literal,·we·can·use·the |
| 218 | convention·of·ending·the·integer·with·a·9,·turning·it·into·a·Q-prefixed·variable | 218 | convention·of·ending·the·integer·with·a·9,·turning·it·into·a·Q-prefixed·variable |
| 219 | on·the·Erlang·level·(see·the·previous·section).</p><h4>Globs</h4><p>Whenever·you·want·to·match·out·a·number·of·elements·in·a·sequence·(zero·or·more) | 219 | on·the·Erlang·level·(see·the·previous·section).</p><h4>Globs</h4><p>Whenever·you·want·to·match·out·a·number·of·elements·in·a·sequence·(zero·or·more) |
| 220 | rather·than·a·fixed·set·of·elements,·you·need·to·use·a·glob.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id="2 | 220 | rather·than·a·fixed·set·of·elements,·you·need·to·use·a·glob.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id="1251620930-1">(</span><span·class="s">"{_@@Elements}"</span><span·class="p"·data-group-id="1251620930-1">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">?</span><span·class="n">Q</span><span·class="[·...·truncated·by·diffoscope;·len:·358,·SHA:·18aa120bd739dff877a7187ea15dcfde1af7d490cdf34338f8a35235177318c0·...·]-2">)</span></code></pre><p>will·bind·Elements·to·the·list·of·individual·syntax·trees·representing·the·atoms |
| 221 | <code·class="inline">a</code>,·<code·class="inline">b</code>,·and·<code·class="inline">c</code>.·This·can·also·be·used·with·static·prefix·and·suffix·elements | 221 | <code·class="inline">a</code>,·<code·class="inline">b</code>,·and·<code·class="inline">c</code>.·This·can·also·be·used·with·static·prefix·and·suffix·elements |
| 222 | in·the·sequence.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id="8231850727-1">(</span><span·class="s">"{a,·b,·_@@Elements}"</span><span·class="p"·data-group-id="8231850727-1">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id="8231850727-2">(</span><span·class="p"·data-group-id="8231850727-3">{</span><span·class="ss">a</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">b</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">c</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">d</span><span·class="p"·data-group-id="8231850727-3">}</span><span·class="p"·data-group-id="8231850727-2">)</span></code></pre><p>will·bind·Elements·to·the·list·of·the·<code·class="inline">c</code>·and·<code·class="inline">d</code>·subtrees,·and</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id="5853036062-1">(</span><span·class="s">"{_@@Elements,·c,·d}"</span><span·class="p"·data-group-id="5853036062-1">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id="5853036062-2">(</span><span·class="p"·data-group-id="5853036062-3">{</span><span·class="ss">a</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">b</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">c</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">d</span><span·class="p"·data-group-id="5853036062-3">}</span><span·class="p"·data-group-id="5853036062-2">)</span></code></pre><p>will·bind·Elements·to·the·list·of·the·<code·class="inline">a</code>·and·<code·class="inline">b</code>·subtrees.·You·can·even·use | ||
| 223 | 222 | in·the·sequence.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id="9778008165-1">(</span><span·class="s">"{a,·b,·_@@Elements}"</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·1720,·SHA:·cce2a1b9c76ed071fd46d9955a2524db2ab1db290a6428ccbed0affe260e47d4·...·] | |
| 223 | plain·metavariables·in·the·prefix·or·suffix:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id="2524625960-1">(</span><span·class="s">"{_@First,·_@@Rest}"</span><span·class="p"·data-group-id="2524625960-1">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id="2524625960-2">(</span><span·class="p"·data-group-id="2524625960-3">{</span><span·class="ss">a</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">b</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">c</span><span·class="p"·data-group-id="2524625960-3">}</span><span·class="p"·data-group-id="2524625960-2">)</span></code></pre><p>or</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id="9269902311-1">(</span><span·class="s">"{_@@_,·_@Last}"</span><span·class="p"·data-group-id="9269902311-1">)</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id="9269902311-2">(</span><span·class="p"·data-group-id="9269902311-3">{</span><span·class="ss">a</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">b</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">c</span><span·class="p"·data-group-id="9269902311-3">}</span><span·class="p"·data-group-id="9269902311-2">)</span></code></pre><p>(ignoring·all·but·the·last·element).·However,·you·cannot·have·two·globs·as·part | ||
| 224 | of·the·same·sequence.</p><h4>Lifted·metavariables</h4><p>In·some·cases,·the·Erlang·syntax·rules·make·it·impossible·to·place·a | 224 | of·the·same·sequence.</p><h4>Lifted·metavariables</h4><p>In·some·cases,·the·Erlang·syntax·rules·make·it·impossible·to·place·a |
| 225 | metavariable·directly·where·you·would·like·it.·For·example,·you·cannot·write:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id=" | 225 | metavariable·directly·where·you·would·like·it.·For·example,·you·cannot·write:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id="5511944764-1">(</span><span·class="s">"-export([_@@Name])."</span><span·class="p"·data-group-id="5511944764-1">)</span></code></pre><p>to·match·out·all·name/arity·pairs·in·the·export·list,·or·to·insert·a·list·of |
| 226 | exports·in·a·declaration,·because·the·Erlang·parser·only·allows·elements·on·the | 226 | exports·in·a·declaration,·because·the·Erlang·parser·only·allows·elements·on·the |
| 227 | form·<code·class="inline">A/I</code>·(where·<code·class="inline">A</code>·is·an·atom·and·<code·class="inline">I</code>·an·integer)·in·the·export·list.·A | 227 | form·<code·class="inline">A/I</code>·(where·<code·class="inline">A</code>·is·an·atom·and·<code·class="inline">I</code>·an·integer)·in·the·export·list.·A |
| 228 | variable·like·the·above·is·not·allowed,·but·neither·is·a·single·atom·or·integer, | 228 | variable·like·the·above·is·not·allowed,·but·neither·is·a·single·atom·or·integer, |
| 229 | so·<code·class="inline">'@@Name'</code>·or·<code·class="inline">909919</code>·would·not·work·either.</p><p>What·you·have·to·do·in·such·cases·is·to·write·your·metavariable·in·a | 229 | so·<code·class="inline">'@@Name'</code>·or·<code·class="inline">909919</code>·would·not·work·either.</p><p>What·you·have·to·do·in·such·cases·is·to·write·your·metavariable·in·a |
| 230 | syntactically·valid·position,·and·use·lifting·markers·to·denote·where·it·should | 230 | syntactically·valid·position,·and·use·lifting·markers·to·denote·where·it·should |
| 231 | really·apply,·as·in:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id=" | 231 | really·apply,·as·in:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id="3027811218-1">(</span><span·class="s">"-export(['@_@Name'/0])."</span><span·class="p"·data-group-id="3027811218-1">)</span></code></pre><p>This·causes·the·variable·to·be·lifted·(after·parsing)·to·the·next·higher·level |
| 232 | in·the·syntax·tree,·replacing·that·entire·subtree.·In·this·case,·the | 232 | in·the·syntax·tree,·replacing·that·entire·subtree.·In·this·case,·the |
| 233 | <code·class="inline">'@_@Name'/0</code>·will·be·replaced·with·<code·class="inline">'@@Name'</code>,·and·the·<code·class="inline">/0</code>·part·was·just·used | 233 | <code·class="inline">'@_@Name'/0</code>·will·be·replaced·with·<code·class="inline">'@@Name'</code>,·and·the·<code·class="inline">/0</code>·part·was·just·used |
| 234 | as·dummy·notation·and·will·be·discarded.</p><p>You·may·even·need·to·apply·lifting·more·than·once.·To·match·the·entire·export | 234 | as·dummy·notation·and·will·be·discarded.</p><p>You·may·even·need·to·apply·lifting·more·than·once.·To·match·the·entire·export |
| 235 | list·as·a·single·syntax·tree,·you·can·write:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id=" | 235 | list·as·a·single·syntax·tree,·you·can·write:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">?</span><span·class="n">Q</span><span·class="p"·data-group-id="8781288529-1">(</span><span·class="s">"-export(['@__Name'/0])."</span><span·class="p"·data-group-id="8781288529-1">)</span></code></pre><p>using·two·underscores,·but·with·no·glob·marker·this·time.·This·will·make·the |
| 236 | entire·<code·class="inline">['@__Name'/0]</code>·part·be·replaced·with·<code·class="inline">'@Name'</code>.</p><p>Sometimes,·the·tree·structure·of·a·code·fragment·is·not·very·obvious,·and·parts | 236 | entire·<code·class="inline">['@__Name'/0]</code>·part·be·replaced·with·<code·class="inline">'@Name'</code>.</p><p>Sometimes,·the·tree·structure·of·a·code·fragment·is·not·very·obvious,·and·parts |
| 237 | of·the·structure·may·be·invisible·when·printed·as·source·code.·For·instance,·a | 237 | of·the·structure·may·be·invisible·when·printed·as·source·code.·For·instance,·a |
| 238 | simple·function·definition·like·the·following:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">zero</span><span·class="p"·data-group-id="6 | 238 | simple·function·definition·like·the·following:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">zero</span><span·class="p"·data-group-id="6969635418-1">(</span><span·class="p"·data-group-id="6969635418-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="mi">0</span><span·class="p">.</span></code></pre><p>consists·of·the·name·(the·atom·<code·class="inline">zero</code>),·and·a·list·of·clauses·containing·the |
| 239 | single·clause·<code·class="inline">()·->·0</code>.·The·clause·consists·of·an·argument·list·(empty),·a | 239 | single·clause·<code·class="inline">()·->·0</code>.·The·clause·consists·of·an·argument·list·(empty),·a |
| 240 | guard·(empty),·and·a·body·(which·is·always·a·list·of·expressions)·containing·the | 240 | guard·(empty),·and·a·body·(which·is·always·a·list·of·expressions)·containing·the |
| 241 | single·expression·<code·class="inline">0</code>.·This·means·that·to·match·out·the·name·and·the·list·of | 241 | single·expression·<code·class="inline">0</code>.·This·means·that·to·match·out·the·name·and·the·list·of |
| 242 | clauses·of·any·function,·you'll·need·to·use·a·pattern·like | 242 | clauses·of·any·function,·you'll·need·to·use·a·pattern·like |
| 243 | <code·class="inline">?Q("'@Name'()·->·_@_@Body.")</code>,·using·a·dummy·clause·whose·body·is·a·glob·lifted | 243 | <code·class="inline">?Q("'@Name'()·->·_@_@Body.")</code>,·using·a·dummy·clause·whose·body·is·a·glob·lifted |
| 244 | one·level.</p><p>To·visualize·the·structure·of·a·syntax·tree,·you·can·use·the·function | 244 | one·level.</p><p>To·visualize·the·structure·of·a·syntax·tree,·you·can·use·the·function |
| 245 | <code·class="inline">merl:show(T)</code>,·which·prints·a·summary.·For·example,·entering</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">merl</span><span·class="p">:</span><span·class="nf">show</span><span·class="p"·data-group-id="6 | 245 | <code·class="inline">merl:show(T)</code>,·which·prints·a·summary.·For·example,·entering</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">merl</span><span·class="p">:</span><span·class="nf">show</span><span·class="p"·data-group-id="6277015490-1">(</span><span·class="nc">merl</span><span·class="p">:</span><span·class="nf">quote</span><span·class="p"·data-group-id="6277015490-2">(</span><span·class="s">"inc(X,·Y)·when·Y·>·0·->·X·+·Y."</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·64,·SHA:·fee7b4224f2530bb7d5f53587e378b24f195c4d6aa098041fdce47812163a5de·...·]-1">)</span></code></pre><p>in·the·Erlang·shell·will·print·the·following·(where·the·<code·class="inline">+</code>·signs·separate |
| 246 | groups·of·subtrees·on·the·same·level):</p><pre><code·class="text">function:·inc(X,·Y)·when·...·->·X·+·Y. | 246 | groups·of·subtrees·on·the·same·level):</p><pre><code·class="text">function:·inc(X,·Y)·when·...·->·X·+·Y. |
| 247 | ··atom:·inc | 247 | ··atom:·inc |
| 248 | ··+ | 248 | ··+ |
| 249 | ··clause:·(X,·Y)·when·...·->·X·+·Y | 249 | ··clause:·(X,·Y)·when·...·->·X·+·Y |
| 250 | ····variable:·X | 250 | ····variable:·X |
| 251 | ····variable:·Y | 251 | ····variable:·Y |
| 252 | ····+ | 252 | ····+ |
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| 14 | dist/lato-latin-300-normal-YUMVEFOL.woff2 | 14 | dist/lato-latin-300-normal-YUMVEFOL.woff2 |
| 15 | dist/lato-latin-400-normal-W7754I4D.woff2 | 15 | dist/lato-latin-400-normal-W7754I4D.woff2 |
| 16 | dist/lato-latin-700-normal-2XVSBPG4.woff2 | 16 | dist/lato-latin-700-normal-2XVSBPG4.woff2 |
| 17 | dist/lato-latin-ext-300-normal-VPGGJKJL.woff2 | 17 | dist/lato-latin-ext-300-normal-VPGGJKJL.woff2 |
| 18 | dist/lato-latin-ext-400-normal-N27NCBWW.woff2 | 18 | dist/lato-latin-ext-400-normal-N27NCBWW.woff2 |
| 19 | dist/lato-latin-ext-700-normal-Q2L5DVMW.woff2 | 19 | dist/lato-latin-ext-700-normal-Q2L5DVMW.woff2 |
| 20 | dist/remixicon-NKANDIL5.woff2 | 20 | dist/remixicon-NKANDIL5.woff2 |
| 21 | dist/search_data- | 21 | dist/search_data-7B342769.js |
| 22 | dist/sidebar_items-3CBBBF05.js | 22 | dist/sidebar_items-3CBBBF05.js |
| 23 | getting_started.html | 23 | getting_started.html |
| 24 | index.html | 24 | index.html |
| 25 | introduction.html | 25 | introduction.html |
| 26 | notes.html | 26 | notes.html |
| 27 | search.html | 27 | search.html |
| 28 | tftp.html | 28 | tftp.html |
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| 124 | ····<span>Examples</span> | 124 | ····<span>Examples</span> |
| 125 | ··</h1> | 125 | ··</h1> |
| 126 | <p>The·<a·href="tftp.html#start/1">start/1</a>·function·starts·a·daemon·process·listening·for·UDP | 126 | <p>The·<a·href="tftp.html#start/1">start/1</a>·function·starts·a·daemon·process·listening·for·UDP |
| 127 | packets·on·a·port.·When·it·receives·a·request·for·read·or·write,·it·spawns·a | 127 | packets·on·a·port.·When·it·receives·a·request·for·read·or·write,·it·spawns·a |
| 128 | temporary·server·process·handling·the·transfer.</p><p>This·is·a·simple·example·of·starting·the·TFTP·server·and·reading·the·content·of | 128 | temporary·server·process·handling·the·transfer.</p><p>This·is·a·simple·example·of·starting·the·TFTP·server·and·reading·the·content·of |
| 129 | a·sample·file·using·the·TFTP·client.</p><p><em>Step·1.</em>·Create·a·sample·file·to·be·used·for·the·transfer:</p><pre><code·class="text">······$·echo·"Erlang/OTP·21"·>·file.txt</code></pre><p><em>Step·2.</em>·Start·the·TFTP·server:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">······</span><span·class="mi">1</span><span·class="o">></span><span·class="w">·</span><span·class="p"·data-group-id=" | 129 | a·sample·file·using·the·TFTP·client.</p><p><em>Step·1.</em>·Create·a·sample·file·to·be·used·for·the·transfer:</p><pre><code·class="text">······$·echo·"Erlang/OTP·21"·>·file.txt</code></pre><p><em>Step·2.</em>·Start·the·TFTP·server:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">······</span><span·class="mi">1</span><span·class="o">></span><span·class="w">·</span><span·class="p"·data-group-id="8735003917-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pid</span><span·class="p"·data-group-id="8735003917-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·cla[·...·truncated·by·diffoscope;·len:·483,·SHA:·fd2eab54434db1fcc4c45de3da67f244a100ede089e6900ccf69e9a88b1e60a2·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 130 | ······</span><span·class="p"·data-group-id=" | 130 | ······</span><span·class="p"·data-group-id="8735003917-5">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.65</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="8735003917-5">}</span>[·...·truncated·by·diffoscope;·len:·896,·SHA:·90e52cde33b703ff1f3965d577c08a2826ec1aa50c0b47aca2a03af1202e0468·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 131 | ······</span><span·class="p"·data-group-id=" | 131 | ······</span><span·class="p"·data-group-id="1178834019-4">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="1178834019-5"><<</span><span·class="s">"Erlang/OTP·21\n"</span><span·class="p"·data-group-id="1178834019-5">>></span><span·class="p[·...·truncated·by·diffoscope;·len:·27,·SHA:·e49e8071b9d5746a44f53599b8a8a4aedc87b1d6b743d4769ad711ad5e31e383·...·]-4">}</span></code></pre> |
| 132 | </div> | 132 | </div> |
| 133 | <div·class="bottom-actions"·id="bottom-actions"> | 133 | <div·class="bottom-actions"·id="bottom-actions"> |
| 134 | ··<div·class="bottom-actions-item"> | 134 | ··<div·class="bottom-actions-item"> |
| 135 | ······<a·href="introduction.html"·class="bottom-actions-button"·rel="prev"> | 135 | ······<a·href="introduction.html"·class="bottom-actions-button"·rel="prev"> |
| 136 | ········<span·class="subheader"> | 136 | ········<span·class="subheader"> |
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| 118 | <div·id="search"> | 118 | <div·id="search"> |
| 119 | ··<h1> | 119 | ··<h1> |
| 120 | ····<span></span> | 120 | ····<span></span> |
| 121 | ··</h1> | 121 | ··</h1> |
| 122 | ··<div·class="loading"><div></div><div></div><div></div><div></div></div> | 122 | ··<div·class="loading"><div></div><div></div><div></div><div></div></div> |
| 123 | </div> | 123 | </div> |
| 124 | <script·src="dist/search_data- | 124 | <script·src="dist/search_data-7B342769.js"></script> |
| 125 | ····<footer·class="footer"> | 125 | ····<footer·class="footer"> |
| 126 | ······<p> | 126 | ······<p> |
| 127 | ········<span·class="line"> | 127 | ········<span·class="line"> |
| 128 | ··········<button·class="a-main·footer-button·display-quick-switch"·title="Search·HexDocs·packages"> | 128 | ··········<button·class="a-main·footer-button·display-quick-switch"·title="Search·HexDocs·packages"> |
| 129 | ············Search·HexDocs | 129 | ············Search·HexDocs |
| 130 | ··········</button> | 130 | ··········</button> |
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| 1 | Zip·file·size:·2882 | 1 | Zip·file·size:·28827·bytes,·number·of·entries:·14 |
| 2 | ?rw-r--r--··6.1·unx·······20·bx·stor·25-Mar-18·0 | 2 | ?rw-r--r--··6.1·unx·······20·bx·stor·25-Mar-18·08:52·mimetype |
| 3 | ?rw-r--r--··6.1·unx······712·bx·defN·25-Mar-18·0 | 3 | ?rw-r--r--··6.1·unx······712·bx·defN·25-Mar-18·08:52·OEBPS/title.xhtml |
| 4 | ?rw-r--r--··6.1·unx·····5937·bx·defN·25-Mar-18·0 | 4 | ?rw-r--r--··6.1·unx·····5937·bx·defN·25-Mar-18·08:52·OEBPS/tftp_logger.xhtml |
| 5 | ?rw-r--r--··6.1·unx····38407·bx·defN·25-Mar-18·0 | 5 | ?rw-r--r--··6.1·unx····38407·bx·defN·25-Mar-18·08:52·OEBPS/tftp.xhtml |
| 6 | ?rw-r--r--··6.1·unx·····8733·bx·defN·25-Mar-18·0 | 6 | ?rw-r--r--··6.1·unx·····8733·bx·defN·25-Mar-18·08:52·OEBPS/notes.xhtml |
| 7 | ?rw-r--r--··6.1·unx·····1184·bx·defN·25-Mar-18·0 | 7 | ?rw-r--r--··6.1·unx·····1184·bx·defN·25-Mar-18·08:52·OEBPS/nav.xhtml |
| 8 | ?rw-r--r--··6.1·unx·····1908·bx·defN·25-Mar-18·0 | 8 | ?rw-r--r--··6.1·unx·····1908·bx·defN·25-Mar-18·08:52·OEBPS/introduction.xhtml |
| 9 | ?rw-r--r--··6.1·unx·····3736·bx·defN·25-Mar-18·0 | 9 | ?rw-r--r--··6.1·unx·····3736·bx·defN·25-Mar-18·08:52·OEBPS/getting_started.xhtml |
| 10 | ?rw-r--r--··6.1·unx····14562·bx·defN·25-Mar-18·0 | 10 | ?rw-r--r--··6.1·unx····14562·bx·defN·25-Mar-18·08:52·OEBPS/dist/epub-erlang-ESPT6BQV.css |
| 11 | ?rw-r--r--··6.1·unx······499·bx·defN·25-Mar-18·0 | 11 | ?rw-r--r--··6.1·unx······499·bx·defN·25-Mar-18·08:52·OEBPS/dist/epub-LSJCIYTM.js |
| 12 | ?rw-r--r--··6.1·unx·····1787·bx·defN·25-Mar-18·0 | 12 | ?rw-r--r--··6.1·unx·····1787·bx·defN·25-Mar-18·08:52·OEBPS/content.opf |
| 13 | ?rw-r--r--··6.1·unx·····5837·bx·defN·25-Mar-18·0 | 13 | ?rw-r--r--··6.1·unx·····5837·bx·defN·25-Mar-18·08:52·OEBPS/assets/logo.png |
| 14 | ?rw-r--r--··6.1·unx······252·bx·defN·25-Mar-18·0 | 14 | ?rw-r--r--··6.1·unx······252·bx·defN·25-Mar-18·08:52·META-INF/container.xml |
| 15 | ?rw-r--r--··6.1·unx······162·bx·defN·25-Mar-18·0 | 15 | ?rw-r--r--··6.1·unx······162·bx·defN·25-Mar-18·08:52·META-INF/com.apple.ibooks.display-options.xml |
| 16 | 14·files,·83736·bytes·uncompressed,·2638 | 16 | 14·files,·83736·bytes·uncompressed,·26385·bytes·compressed:··68.5% |
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| 1 | Zip·archive·data,·made·by·v6.1·UNIX,·extract·using·at·least·v1.0,·last·modified,·last·modified·Sun,·Mar·18·2025·0 | 1 | Zip·archive·data,·made·by·v6.1·UNIX,·extract·using·at·least·v1.0,·last·modified,·last·modified·Sun,·Mar·18·2025·08:52:04,·uncompressed·size·20,·method=store |
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| 25 | ······<section·id="moduledoc"·class="docstring"> | 25 | ······<section·id="moduledoc"·class="docstring"> |
| 26 | <p>Trivial·FTP.</p><p>Interface·module·for·the·<code·class="inline">tftp</code>·application.</p><h2·id="module-overwiew"·class="section-heading"> | 26 | <p>Trivial·FTP.</p><p>Interface·module·for·the·<code·class="inline">tftp</code>·application.</p><h2·id="module-overwiew"·class="section-heading"> |
| 27 | ··<a·href="#module-overwiew"·class="hover-link"> | 27 | ··<a·href="#module-overwiew"·class="hover-link"> |
| 28 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 28 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 29 | ··</a> | 29 | ··</a> |
| 30 | ··<span·class="text">Overwiew</span> | 30 | ··<span·class="text">Overwiew</span> |
| 31 | </h2> | 31 | </h2> |
| 32 | <p>This·is·a·complete·implementation·of·the·following·IETF·standards:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="n">RFC</samp><samp·class="w">·</samp><samp·class="mi">1350</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">The</samp><samp·class="w">·</samp><samp·class="n">TFTP</samp><samp·class="w">·</samp><samp·class="n">Protocol</samp><samp·class="w">·</samp><samp·class="p"·data-group-id=" | 32 | <p>This·is·a·complete·implementation·of·the·following·IETF·standards:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="n">RFC</samp><samp·class="w">·</samp><samp·class="mi">1350</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">The</samp><samp·class="w">·</samp><samp·class="n">TFTP</samp><samp·class="w">·</samp><samp·class="n">Protocol</samp><samp·class="w">·</samp><samp·class="p"·data-group-id="0540152678-1">(</samp><samp·class="ss">revision</samp><samp·class="w">·</samp><samp·class="mi">2</samp><samp·class="p"·data-group-id="0540152678-1">)</samp><samp·class="p">.</samp><samp·class="w"> |
| 33 | </samp><samp·class="n">RFC</samp><samp·class="w">·</samp><samp·class="mi">2347</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">TFTP</samp><samp·class="w">·</samp><samp·class="n">Option</samp><samp·class="w">·</samp><samp·class="n">Extension</samp><samp·class="p">.</samp><samp·class="w"> | 33 | </samp><samp·class="n">RFC</samp><samp·class="w">·</samp><samp·class="mi">2347</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">TFTP</samp><samp·class="w">·</samp><samp·class="n">Option</samp><samp·class="w">·</samp><samp·class="n">Extension</samp><samp·class="p">.</samp><samp·class="w"> |
| 34 | </samp><samp·class="n">RFC</samp><samp·class="w">·</samp><samp·class="mi">2348</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">TFTP</samp><samp·class="w">·</samp><samp·class="n">Blocksize</samp><samp·class="w">·</samp><samp·class="n">Option</samp><samp·class="p">.</samp><samp·class="w"> | 34 | </samp><samp·class="n">RFC</samp><samp·class="w">·</samp><samp·class="mi">2348</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">TFTP</samp><samp·class="w">·</samp><samp·class="n">Blocksize</samp><samp·class="w">·</samp><samp·class="n">Option</samp><samp·class="p">.</samp><samp·class="w"> |
| 35 | </samp><samp·class="n">RFC</samp><samp·class="w">·</samp><samp·class="mi">2349</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">TFTP</samp><samp·class="w">·</samp><samp·class="n">Timeout</samp><samp·class="w">·</samp><samp·class="n">Interval</samp><samp·class="w">·</samp><samp·class="ow">and</samp><samp·class="w">·</samp><samp·class="n">Transfer</samp><samp·class="w">·</samp><samp·class="n">Size</samp><samp·class="w">·</samp><samp·class="n">Options</samp><samp·class="p">.</samp></code></pre><p>The·only·feature·that·not·is·implemented·in·this·release·is | 35 | </samp><samp·class="n">RFC</samp><samp·class="w">·</samp><samp·class="mi">2349</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">TFTP</samp><samp·class="w">·</samp><samp·class="n">Timeout</samp><samp·class="w">·</samp><samp·class="n">Interval</samp><samp·class="w">·</samp><samp·class="ow">and</samp><samp·class="w">·</samp><samp·class="n">Transfer</samp><samp·class="w">·</samp><samp·class="n">Size</samp><samp·class="w">·</samp><samp·class="n">Options</samp><samp·class="p">.</samp></code></pre><p>The·only·feature·that·not·is·implemented·in·this·release·is |
| 36 | the·"netascii"·transfer·mode.</p><p>The·<a·href="#start/1">start</a>·function·starts·a·daemon·process·which,·listens | 36 | the·"netascii"·transfer·mode.</p><p>The·<a·href="#start/1">start</a>·function·starts·a·daemon·process·which,·listens |
| 37 | for·UDP·packets·on·a·port.·When·it·receives·a·request·for·read·or | 37 | for·UDP·packets·on·a·port.·When·it·receives·a·request·for·read·or |
| 38 | write·it·spawns·a·temporary·server·process·which·handles·the·actual | 38 | write·it·spawns·a·temporary·server·process·which·handles·the·actual |
| 39 | transfer·of·the·file.·On·the·client·side·the | 39 | transfer·of·the·file.·On·the·client·side·the |
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| 19 | ····<h1·id="content"> | 19 | ····<h1·id="content"> |
| 20 | Examples | 20 | Examples |
| 21 | ····</h1> | 21 | ····</h1> |
| 22 | <p>The·<a·href="tftp.xhtml#start/1">start/1</a>·function·starts·a·daemon·process·listening·for·UDP | 22 | <p>The·<a·href="tftp.xhtml#start/1">start/1</a>·function·starts·a·daemon·process·listening·for·UDP |
| 23 | packets·on·a·port.·When·it·receives·a·request·for·read·or·write,·it·spawns·a | 23 | packets·on·a·port.·When·it·receives·a·request·for·read·or·write,·it·spawns·a |
| 24 | temporary·server·process·handling·the·transfer.</p><p>This·is·a·simple·example·of·starting·the·TFTP·server·and·reading·the·content·of | 24 | temporary·server·process·handling·the·transfer.</p><p>This·is·a·simple·example·of·starting·the·TFTP·server·and·reading·the·content·of |
| 25 | a·sample·file·using·the·TFTP·client.</p><p><em>Step·1.</em>·Create·a·sample·file·to·be·used·for·the·transfer:</p><pre><code·class="text">······$·echo·"Erlang/OTP·21"·>·file.txt</code></pre><p><em>Step·2.</em>·Start·the·TFTP·server:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">······</span><span·class="mi">1</span><span·class="o">></span><span·class="w">·</span><span·class="p"·data-group-id="3883461604-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pid</span><span·class="p"·data-group-id="3883461604-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">tftp</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="3883461604-2">(</span><span·class="p"·data-group-id="3883461604-3">[</span><span·class="p"·data-group-id="3883461604-4">{</span><span·class="ss">port</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">19999</span><span·class="p"·data-group-id="3883461604-4">}</span><span·class="p"·data-group-id="3883461604-3">]</span><span·class="p"·data-group-id="3883461604-2">)</span><span·class="p">.</span><span·class="w"> | ||
| 26 | 25 | a·sample·file·using·the·TFTP·client.</p><p><em>Step·1.</em>·Create·a·sample·file·to·be·used·for·the·transfer:</p><pre><code·class="text">······$·echo·"Erlang/OTP·21"·>·file.txt</code></pre><p><em>Step·2.</em>·Start·the·TFTP·server:</p><pre><co[·...·truncated·by·diffoscope;·len:·917,·SHA:·d4864db2451384d3560be32389c69076430b963e65299f015fc2783a40ce1c67·...·]">)</span><span·class="p">.</span><span·class="w"> | |
| 26 | ······</span><span·class="p"·data-group-id="0399839655-5">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.65</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="0399839655-5">}</span></code></pre><p><em>Step·3.</em>·Start·the·TFTP·client·(in·another·shell):</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">······</span><span·class="mi">1</span><span·class="o">></span><span·class="w">·</span><span·class="nc">tftp</span><span·class="p">:</span><span·class="nf">read_file</span><span·class="p"·data-group-id="1208889497-1">(</span><span·class="s">"file.txt"</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">binary</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="1208889497-2">[</span><span·class="p"·data-group-id="1208889497-3">{</span><span·class="ss">port</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">19999</span><span·class="p"·data-group-id="1208889497-3">}</span><span·class="p"·data-group-id="1208889497-2">]</span><span·class="p"·data-group-id="1208889497-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 27 | ······</span><span·class="p"·data-group-id="1 | 27 | ······</span><span·class="p"·data-group-id="1208889497-4">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="1208889497-5"><<</span><span·class="s">"Erlang/OTP·21\n"</span><span·class="p"·data-group-id="1208889497-5">>></span><span·class="p"[·...·truncated·by·diffoscope;·len:·26,·SHA:·96dc9848ed88c4904c430f4c8dfd8eeba0dc13258405eb6b9739ef696f9bccc1·...·]-4">}</span></code></pre> |
| 28 | ··</body> | 28 | ··</body> |
| 29 | </html> | 29 | </html> |
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| 130 | ····<section·id="moduledoc"> | 130 | ····<section·id="moduledoc"> |
| 131 | <p>Trivial·FTP.</p><p>Interface·module·for·the·<code·class="inline">tftp</code>·application.</p><h2·id="module-overwiew"·class="section-heading"> | 131 | <p>Trivial·FTP.</p><p>Interface·module·for·the·<code·class="inline">tftp</code>·application.</p><h2·id="module-overwiew"·class="section-heading"> |
| 132 | ··<a·href="#module-overwiew"·class="hover-link"> | 132 | ··<a·href="#module-overwiew"·class="hover-link"> |
| 133 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 133 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 134 | ··</a> | 134 | ··</a> |
| 135 | ··<span·class="text">Overwiew</span> | 135 | ··<span·class="text">Overwiew</span> |
| 136 | </h2> | 136 | </h2> |
| 137 | <p>This·is·a·complete·implementation·of·the·following·IETF·standards:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">RFC</span><span·class="w">·</span><span·class="mi">1350</span><span·class="p">,</span><span·class="w">·</span><span·class="n">The</span><span·class="w">·</span><span·class="n">TFTP</span><span·class="w">·</span><span·class="n">Protocol</span><span·class="w">·</span><span·class="p"·data-group-id=" | 137 | <p>This·is·a·complete·implementation·of·the·following·IETF·standards:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">RFC</span><span·class="w">·</span><span·class="mi">1350</span><span·class="p">,</span><span·class="w">·</span><span·class="n">The</span><span·class="w">·</span><span·class="n">TFTP</span><span·class="w">·</span><span·class="n">Protocol</span><span·class="w">·</span><span·class="p"·data-group-id="4324309440-1">(</span><span·class="ss">revision</span><span·class="w">·</span><span·class="mi">2</span><span·class="p"·data-group-id="4324309440-1">)</span><span·class="p">.</span><span·class="w"> |
| 138 | </span><span·class="n">RFC</span><span·class="w">·</span><span·class="mi">2347</span><span·class="p">,</span><span·class="w">·</span><span·class="n">TFTP</span><span·class="w">·</span><span·class="n">Option</span><span·class="w">·</span><span·class="n">Extension</span><span·class="p">.</span><span·class="w"> | 138 | </span><span·class="n">RFC</span><span·class="w">·</span><span·class="mi">2347</span><span·class="p">,</span><span·class="w">·</span><span·class="n">TFTP</span><span·class="w">·</span><span·class="n">Option</span><span·class="w">·</span><span·class="n">Extension</span><span·class="p">.</span><span·class="w"> |
| 139 | </span><span·class="n">RFC</span><span·class="w">·</span><span·class="mi">2348</span><span·class="p">,</span><span·class="w">·</span><span·class="n">TFTP</span><span·class="w">·</span><span·class="n">Blocksize</span><span·class="w">·</span><span·class="n">Option</span><span·class="p">.</span><span·class="w"> | 139 | </span><span·class="n">RFC</span><span·class="w">·</span><span·class="mi">2348</span><span·class="p">,</span><span·class="w">·</span><span·class="n">TFTP</span><span·class="w">·</span><span·class="n">Blocksize</span><span·class="w">·</span><span·class="n">Option</span><span·class="p">.</span><span·class="w"> |
| 140 | </span><span·class="n">RFC</span><span·class="w">·</span><span·class="mi">2349</span><span·class="p">,</span><span·class="w">·</span><span·class="n">TFTP</span><span·class="w">·</span><span·class="n">Timeout</span><span·class="w">·</span><span·class="n">Interval</span><span·class="w">·</span><span·class="ow">and</span><span·class="w">·</span><span·class="n">Transfer</span><span·class="w">·</span><span·class="n">Size</span><span·class="w">·</span><span·class="n">Options</span><span·class="p">.</span></code></pre><p>The·only·feature·that·not·is·implemented·in·this·release·is | 140 | </span><span·class="n">RFC</span><span·class="w">·</span><span·class="mi">2349</span><span·class="p">,</span><span·class="w">·</span><span·class="n">TFTP</span><span·class="w">·</span><span·class="n">Timeout</span><span·class="w">·</span><span·class="n">Interval</span><span·class="w">·</span><span·class="ow">and</span><span·class="w">·</span><span·class="n">Transfer</span><span·class="w">·</span><span·class="n">Size</span><span·class="w">·</span><span·class="n">Options</span><span·class="p">.</span></code></pre><p>The·only·feature·that·not·is·implemented·in·this·release·is |
| 141 | the·"netascii"·transfer·mode.</p><p>The·<a·href="#start/1">start</a>·function·starts·a·daemon·process·which,·listens | 141 | the·"netascii"·transfer·mode.</p><p>The·<a·href="#start/1">start</a>·function·starts·a·daemon·process·which,·listens |
| 142 | for·UDP·packets·on·a·port.·When·it·receives·a·request·for·read·or | 142 | for·UDP·packets·on·a·port.·When·it·receives·a·request·for·read·or |
| 143 | write·it·spawns·a·temporary·server·process·which·handles·the·actual | 143 | write·it·spawns·a·temporary·server·process·which·handles·the·actual |
| 144 | transfer·of·the·file.·On·the·client·side·the | 144 | transfer·of·the·file.·On·the·client·side·the |
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| 1507 | ······</div> | 1507 | ······</div> |
| 1508 | <p>Analyzes·one·or·more·modules·as·specified·by·<code·class="inline">Arg</code>.</p><p>If·<code·class="inline">Arg</code>·is·one·of·the·values·in·<a·href="#t:analysis/0"><code·class="inline">analysis()</code></a>,·this | 1508 | <p>Analyzes·one·or·more·modules·as·specified·by·<code·class="inline">Arg</code>.</p><p>If·<code·class="inline">Arg</code>·is·one·of·the·values·in·<a·href="#t:analysis/0"><code·class="inline">analysis()</code></a>,·this |
| 1509 | call·is·equivalent·to·<a·href="#analyse/3"><code·class="inline">analyse('_',·Arg,·function)</code></a>.</p><p>If·<code·class="inline">Arg</code>·is·one·of·the·values·in·<a·href="#t:level/0"><code·class="inline">level()</code></a>,·this | 1509 | call·is·equivalent·to·<a·href="#analyse/3"><code·class="inline">analyse('_',·Arg,·function)</code></a>.</p><p>If·<code·class="inline">Arg</code>·is·one·of·the·values·in·<a·href="#t:level/0"><code·class="inline">level()</code></a>,·this |
| 1510 | call·is·equivalent·to·<a·href="#analyse/3"><code·class="inline">analyse('_',·coverage,·Arg)</code></a>.</p><p>Otherwise·<code·class="inline">Arg</code>·is·assumed·to·be·a·module·name,·and·this·call·is·equivalent | 1510 | call·is·equivalent·to·<a·href="#analyse/3"><code·class="inline">analyse('_',·coverage,·Arg)</code></a>.</p><p>Otherwise·<code·class="inline">Arg</code>·is·assumed·to·be·a·module·name,·and·this·call·is·equivalent |
| 1511 | to·<a·href="#analyse/3"><code·class="inline">analyse(Arg,·coverage,·function)</code></a>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>To·analyze·a·module·whose·name·overlaps·with·one·the·values·in | 1511 | to·<a·href="#analyse/3"><code·class="inline">analyse(Arg,·coverage,·function)</code></a>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>To·analyze·a·module·whose·name·overlaps·with·one·the·values·in |
| 1512 | <a·href="#t:analysis/0"><code·class="inline">analysis()</code></a>·or·<a·href="#t:level/0"><code·class="inline">level()</code></a>,·the·module | 1512 | <a·href="#t:analysis/0"><code·class="inline">analysis()</code></a>·or·<a·href="#t:level/0"><code·class="inline">level()</code></a>,·the·module |
| 1513 | name·has·to·be·in·a·list.·For·example,·to·analyze·a·module·named·<code·class="inline">calls</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">cover</span><span·class="p">:</span><span·class="nf">analyse</span><span·class="p"·data-group-id="4 | 1513 | name·has·to·be·in·a·list.·For·example,·to·analyze·a·module·named·<code·class="inline">calls</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">cover</span><span·class="p">:</span><span·class="nf">analyse</span><span·class="p"·data-group-id="2864572960-1">(</span><span·class="p"·data-group-id="2864572960-2">[</span><span·class="ss">calls</span><span·class="p"·data-group-id="2864572960-2">]</span><span·class="p"·data-group-id="2864572960-1">)</span><span·class="p">.</span></code></pre></section> |
| 1514 | ··</section> | 1514 | ··</section> |
| 1515 | </section> | 1515 | </section> |
| 1516 | <section·class="detail"·id="analyse/2"> | 1516 | <section·class="detail"·id="analyse/2"> |
| 1517 | ··<div·class="detail-header"> | 1517 | ··<div·class="detail-header"> |
| 1518 | ····<a·href="#analyse/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1518 | ····<a·href="#analyse/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1519 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1519 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 1547 | <p>Analyzes·one·or·more·modules·as·specified·by·<code·class="inline">Arg1</code>·and·<code·class="inline">Arg2</code>.</p><p>If·<code·class="inline">Arg1</code>·is·one·of·the·values·in·<a·href="#t:analysis/0"><code·class="inline">analysis()</code></a>·and | 1547 | <p>Analyzes·one·or·more·modules·as·specified·by·<code·class="inline">Arg1</code>·and·<code·class="inline">Arg2</code>.</p><p>If·<code·class="inline">Arg1</code>·is·one·of·the·values·in·<a·href="#t:analysis/0"><code·class="inline">analysis()</code></a>·and |
| 1548 | <code·class="inline">Arg2</code>·is·one·of·the·values·in·<a·href="#t:level/0"><code·class="inline">level()</code></a>,·this | 1548 | <code·class="inline">Arg2</code>·is·one·of·the·values·in·<a·href="#t:level/0"><code·class="inline">level()</code></a>,·this |
| 1549 | call·is·equivalent·to·<a·href="#analyse/3"><code·class="inline">analyse('_',·Arg1,·Arg2)</code></a>.</p><p>If·<code·class="inline">Arg2</code>·is·one·of·the·values·in·<a·href="#t:analysis/0"><code·class="inline">analysis()</code></a>, | 1549 | call·is·equivalent·to·<a·href="#analyse/3"><code·class="inline">analyse('_',·Arg1,·Arg2)</code></a>.</p><p>If·<code·class="inline">Arg2</code>·is·one·of·the·values·in·<a·href="#t:analysis/0"><code·class="inline">analysis()</code></a>, |
| 1550 | <code·class="inline">Arg1</code>·is·assumed·to·be·a·module·and·this·call·is·equivalent·to | 1550 | <code·class="inline">Arg1</code>·is·assumed·to·be·a·module·and·this·call·is·equivalent·to |
| 1551 | <a·href="#analyse/3"><code·class="inline">analyse(Arg1,·Arg2,·function)</code></a>.</p><p>If·<code·class="inline">Arg2</code>·is·one·of·the·values·in·<a·href="#t:level/0"><code·class="inline">level()</code></a>,·<code·class="inline">Arg1</code>·is | 1551 | <a·href="#analyse/3"><code·class="inline">analyse(Arg1,·Arg2,·function)</code></a>.</p><p>If·<code·class="inline">Arg2</code>·is·one·of·the·values·in·<a·href="#t:level/0"><code·class="inline">level()</code></a>,·<code·class="inline">Arg1</code>·is |
| 1552 | assumed·to·be·a·module·and·this·call·is·equivalent·to·<a·href="#analyse/3"><code·class="inline">analyse(Arg1,·coverage,·Arg2)</code></a>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>To·analyze·a·module·whose·name·overlaps·with·one·of·the·values·in | 1552 | assumed·to·be·a·module·and·this·call·is·equivalent·to·<a·href="#analyse/3"><code·class="inline">analyse(Arg1,·coverage,·Arg2)</code></a>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>To·analyze·a·module·whose·name·overlaps·with·one·of·the·values·in |
| 1553 | <a·href="#t:analysis/0"><code·class="inline">analysis()</code></a>,·the·module·name·needs·to·be·in·a | 1553 | <a·href="#t:analysis/0"><code·class="inline">analysis()</code></a>,·the·module·name·needs·to·be·in·a |
| 1554 | list.·For·example,·to·analyze·a·module·named·<code·class="inline">calls</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">cover</span><span·class="p">:</span><span·class="nf">analyse</span><span·class="p"·data-group-id=" | 1554 | list.·For·example,·to·analyze·a·module·named·<code·class="inline">calls</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">cover</span><span·class="p">:</span><span·class="nf">analyse</span><span·class="p"·data-group-id="4935620874-1">(</span><span·class="p"·data-group-id="4935620874-2">[</span><span·class="ss">calls</span><span·class="p"·data-group-id="4935620874-2">]</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">function</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·22,·SHA:·d3aa9c9af2b0dbf9825e1df1a1624b50ca4a4863ba6ad4f3b9ab0efc6da04dd2·...·]-1">)</span><span·class="p">.</span></code></pre></section> |
| 1555 | ··</section> | 1555 | ··</section> |
| 1556 | </section> | 1556 | </section> |
| 1557 | <section·class="detail"·id="analyse/3"> | 1557 | <section·class="detail"·id="analyse/3"> |
| 1558 | ··<div·class="detail-header"> | 1558 | ··<div·class="detail-header"> |
| 1559 | ····<a·href="#analyse/3"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1559 | ····<a·href="#analyse/3"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1560 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1560 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 1650, 15 lines modified | Offset 1650, 15 lines modified | ||
| 1650 | ······</div> | 1650 | ······</div> |
| 1651 | <p>If·<code·class="inline">Arg</code>·is·a·list·of·<a·href="#t:analyse_option/0"><code·class="inline">analyse_option()</code></a> | 1651 | <p>If·<code·class="inline">Arg</code>·is·a·list·of·<a·href="#t:analyse_option/0"><code·class="inline">analyse_option()</code></a> |
| 1652 | options,·this·call·is·equivalent·to·<a·href="#analyse_to_file/2"><code·class="inline">analyse_to_file('_',·Arg)</code></a>.</p><p>Otherwise·<code·class="inline">Arg</code>·is·assumed·to·be·a·module,·and·this·call·is·equivalent·to | 1652 | options,·this·call·is·equivalent·to·<a·href="#analyse_to_file/2"><code·class="inline">analyse_to_file('_',·Arg)</code></a>.</p><p>Otherwise·<code·class="inline">Arg</code>·is·assumed·to·be·a·module,·and·this·call·is·equivalent·to |
| 1653 | <a·href="#analyse_to_file/2"><code·class="inline">analyse_to_file(Arg,·[])</code></a>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>To·analyze·a·module·of·the·name·<code·class="inline">html</code>·(which·overlaps·with·an·option | 1653 | <a·href="#analyse_to_file/2"><code·class="inline">analyse_to_file(Arg,·[])</code></a>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>To·analyze·a·module·of·the·name·<code·class="inline">html</code>·(which·overlaps·with·an·option |
| 1654 | in·<a·href="#t:analyse_option/0"><code·class="inline">analyse_option()</code></a>),·it·is·necessary·to | 1654 | in·<a·href="#t:analyse_option/0"><code·class="inline">analyse_option()</code></a>),·it·is·necessary·to |
| 1655 | use·<a·href="#analyse_to_file/2"><code·class="inline">cover:analyse_to_file/2</code></a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">cover</span><span·class="p">:</span><span·class="nf">analyse_to_file</span><span·class="p"·data-group-id=" | 1655 | use·<a·href="#analyse_to_file/2"><code·class="inline">cover:analyse_to_file/2</code></a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">cover</span><span·class="p">:</span><span·class="nf">analyse_to_file</span><span·class="p"·data-group-id="3336931734-1">(</span><span·class="p"·data-group-id="3336931734-2">[</span><span·class="ss">html</span><span·class="p"·data-group-id="3336931734-2">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3336931734-3">[</span[·...·truncated·by·diffoscope;·len:·95,·SHA:·6fb3dcdc1463e2c0c316e7e344c14a95293ccdda6883493c6970735dbb2b8c4b·...·]-1">)</span><span·class="p">.</span></code></pre></section> |
| 1656 | ··</section> | 1656 | ··</section> |
| 1657 | </section> | 1657 | </section> |
| 1658 | <section·class="detail"·id="analyse_to_file/2"> | 1658 | <section·class="detail"·id="analyse_to_file/2"> |
| 1659 | ··<div·class="detail-header"> | 1659 | ··<div·class="detail-header"> |
| 1660 | ····<a·href="#analyse_to_file/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1660 | ····<a·href="#analyse_to_file/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1661 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1661 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 142, 89 lines modified | Offset 142, 89 lines modified | ||
| 142 | </h2> | 142 | </h2> |
| 143 | <h3·id="example"·class="section-heading"> | 143 | <h3·id="example"·class="section-heading"> |
| 144 | ··<a·href="#example"·class="hover-link"> | 144 | ··<a·href="#example"·class="hover-link"> |
| 145 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 145 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 146 | ··</a> | 146 | ··</a> |
| 147 | ··<span·class="text">Example</span> | 147 | ··<span·class="text">Example</span> |
| 148 | </h3> | 148 | </h3> |
| 149 | <p>Assume·that·a·test·case·for·the·following·program·should·be·verified:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 149 | <p>Assume·that·a·test·case·for·the·following·program·should·be·verified:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="5150645520-1">(</span><span·class="ss">channel</span><span·class="p"·data-group-id="5150645520-1">)</span><span·class="p">.</span><span·class="w"> |
| 150 | </span><span·class="p">-</span><span·class="na">behaviour</span><span·class="p"·data-group-id=" | 150 | </span><span·class="p">-</span><span·class="na">behaviour</span><span·class="p"·data-group-id="5150645520-2">(</span><span·class="ss">gen_server</span><span·class="p"·data-group-id="5150645520-2">)</span><span·class="p">.</span><span·class="w"> |
| 151 | </span><span·class="w"> | 151 | </span><span·class="w"> |
| 152 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 152 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="5150645520-3">(</span><span·class="p"·data-group-id="5150645520-4">[</span><span·class="ss">start_link</span><span·class="p">/</span><span·class="mi">0</span><span·class="p">,</span><span·class="ss">stop</span><span·class="p">/</span><span·class="mi">0</sp[·...·truncated·by·diffoscope;·len:·95,·SHA:·8931edab7b5c1eb62935ecc30153f6cb4092674eebd408ec4dc29bde1b80c29f·...·]20-3">)</span><span·class="p">.</span><span·class="w"> |
| 153 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 153 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="5150645520-5">(</span><span·class="p"·data-group-id="5150645520-6">[</span><span·class="ss">alloc</span><span·class="p">/</span><span·class="mi">0</span><span·class="p">,</span><span·class="ss">free</span><span·class="p">/</span><span·class="mi">1</span><s[·...·truncated·by·diffoscope;·len:·90,·SHA:·977b27bca329e0240debb47f5407eeb9d13271e87fd8c88dca4b4b9982967e5b·...·]20-5">)</span><span·class="p">.</span><span·class="w">·</span><span·class="c1">%·client·interface</span><span·class="w"> |
| 154 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 154 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="5150645520-7">(</span><span·class="p"·data-group-id="5150645520-8">[</span><span·class="ss">init</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="ss">handle_call</span><span·class="p">/</span><span·class="mi">3</s[·...·truncated·by·diffoscope;·len:·202,·SHA:·754e7e1c632bb1da6468c4d583b250ddba5f1afecafd1698fe65127e3a01594a·...·]20-7">)</span><span·class="p">.</span><span·class="w">·</span><span·class="c1">%·callback·functions</span><span·class="w"> |
| 155 | </span><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 155 | </span><span·class="nf">start_link</span><span·class="p"·data-group-id="5150645520-9">(</span><span·class="p"·data-group-id="5150645520-9">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 156 | ····</span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 156 | ····</span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id="5150645520-10">(</span><span·class="p"·data-group-id="5150645520-11">{</span><span·class="ss">local</span><span·class="p">,</span><span·class="ss">channel</span><span·class="p"·data-group-id="5150645520-11">}</span><span·class="p">,</span><span·class="w">·[·...·truncated·by·diffoscope;·len:·389,·SHA:·bf27503f8020caa3cc22f66f727c8b64a5c4bf09be4f274edf7f46c600595c79·...·]20-10">)</span><span·class="p">.</span><span·class="w"> |
| 157 | </span><span·class="nf">stop</span><span·class="p"·data-group-id=" | 157 | </span><span·class="nf">stop</span><span·class="p"·data-group-id="5150645520-14">(</span><span·class="p"·data-group-id="5150645520-14">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 158 | ····</span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id=" | 158 | ····</span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id="5150645520-15">(</span><span·class="ss">channel</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">stop</span><span·class="p"·data-group-id="5150645520-15">)</span><span·class="p">.</span><span·class="w"> |
| 159 | </span><span·class="c1">%%%-Client·interface·functions-------------------------------------------</span><span·class="w"> | 159 | </span><span·class="c1">%%%-Client·interface·functions-------------------------------------------</span><span·class="w"> |
| 160 | </span><span·class="nf">alloc</span><span·class="p"·data-group-id=" | 160 | </span><span·class="nf">alloc</span><span·class="p"·data-group-id="5150645520-16">(</span><span·class="p"·data-group-id="5150645520-16">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 161 | ····</span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id=" | 161 | ····</span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id="5150645520-17">(</span><span·class="ss">channel</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">alloc</span><span·class="p"·data-group-id="5150645520-17">)</span><span·class="p">.</span><span·class="w"> |
| 162 | </span><span·class="nf">free</span><span·class="p"·data-group-id=" | 162 | </span><span·class="nf">free</span><span·class="p"·data-group-id="5150645520-18">(</span><span·class="n">Channel</span><span·class="p"·data-group-id="5150645520-18">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 163 | ····</span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id=" | 163 | ····</span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id="5150645520-19">(</span><span·class="ss">channel</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5150645520-20">{</span><span·class="ss">free</span><span·class="p">,</span><span·class="n">Channel</span><span·class="p"·da[·...·truncated·by·diffoscope;·len:·75,·SHA:·2a3b177c700430c6b60646dae16dc313b89d0b1a605faeab61a4bd024c79b5ef·...·]20-19">)</span><span·class="p">.</span><span·class="w"> |
| 164 | </span><span·class="c1">%%%-gen_server·callback·functions----------------------------------------</span><span·class="w"> | 164 | </span><span·class="c1">%%%-gen_server·callback·functions----------------------------------------</span><span·class="w"> |
| 165 | </span><span·class="nf">init</span><span·class="p"·data-group-id=" | 165 | </span><span·class="nf">init</span><span·class="p"·data-group-id="5150645520-21">(</span><span·class="p">_</span><span·class="n">Arg</span><span·class="p"·data-group-id="5150645520-21">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 166 | ····</span><span·class="p"·data-group-id=" | 166 | ····</span><span·class="p"·data-group-id="5150645520-22">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="nf">channels</span><span·class="p"·data-group-id="5150645520-23">(</span><span·class="p"·data-group-id="5150645520-23">)</span><span·class="p"·data-group-id="5150645520-22">}</span><span·class="p">.</span><span·class="w"> |
| 167 | </span><span·class="nf">handle_call</span><span·class="p"·data-group-id=" | 167 | </span><span·class="nf">handle_call</span><span·class="p"·data-group-id="5150645520-24">(</span><span·class="ss">stop</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">Client</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Channels</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·14,·SHA:·22bae865671ddcfb882913f1dc1707c5e840e31e9326c0b22b024f5505f76961·...·]20-24">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 168 | ····</span><span·class="p"·data-group-id=" | 168 | ····</span><span·class="p"·data-group-id="5150645520-25">{</span><span·class="ss">stop</span><span·class="p">,</span><span·class="ss">normal</span><span·class="p">,</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">Channels</span><span·class="p"·data-group-id="5150645520-25">}</span><span·class="p">;</span><span·class="w"> |
| 169 | </span><span·class="nf">handle_call</span><span·class="p"·data-group-id=" | 169 | </span><span·class="nf">handle_call</span><span·class="p"·data-group-id="5150645520-26">(</span><span·class="ss">alloc</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">Client</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Channels</span><span·class="p"·data-gro[·...·truncated·by·diffoscope;·len:·15,·SHA:·70bad1399def6c54f714818c8fff21b2b559880d4d1bea81a73d1d14b6da67cd·...·]20-26">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 170 | ····</span><span·class="p"·data-group-id=" | 170 | ····</span><span·class="p"·data-group-id="5150645520-27">{</span><span·class="n">Ch</span><span·class="p">,</span><span·class="n">Channels2</span><span·class="p"·data-group-id="5150645520-27">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">alloc</sp[·...·truncated·by·diffoscope;·len:·127,·SHA:·8faf742435814742c43d8b0c512fe6bb7075a1dcfbc8d899ef0e5a68d1ff2d0a·...·]20-28">)</span><span·class="p">,</span><span·class="w"> |
| 171 | ····</span><span·class="p"·data-group-id=" | 171 | ····</span><span·class="p"·data-group-id="5150645520-29">{</span><span·class="ss">reply</span><span·class="p">,</span><span·class="p"·data-group-id="5150645520-30">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">Ch</span><span·class="p"·data-group-id="5150645520-30">}</sp[·...·truncated·by·diffoscope;·len:·98,·SHA:·4a8e8ca987501a6898e72712b0fab6ad8b360e5d291a413e1b4ec296e885da9d·...·]20-29">}</span><span·class="p">;</span><span·class="w"> |
| 172 | </span><span·class="nf">handle_call</span><span·class="p"·data-group-id=" | 172 | </span><span·class="nf">handle_call</span><span·class="p"·data-group-id="5150645520-31">(</span><span·class="p"·data-group-id="5150645520-32">{</span><span·class="ss">free</span><span·class="p">,</span><span·class="n">Channel</span><span·class="p"·data-group-id="5150645520-32">}</span><span·class="p">,</span><span·class="w">·</[·...·truncated·by·diffoscope;·len:·176,·SHA:·e6a228d0708e71854591fc664b72cd11a8320bd07db0f1a06a7663dfed113deb·...·]20-31">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 173 | ····</span><span·class="n">Channels2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">free</span><span·class="p"·data-group-id=" | 173 | ····</span><span·class="n">Channels2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">free</span><span·class="p"·data-group-id="5150645520-33">(</span><span·class="n">Channel</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Channels</span><span·class="p"·data-group-id="5150645520-33">)</span><span·class="p">,</span><span·class="w"> |
| 174 | ····</span><span·class="p"·data-group-id=" | 174 | ····</span><span·class="p"·data-group-id="5150645520-34">{</span><span·class="ss">reply</span><span·class="p">,</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">Channels2</span><span·class="p"·data-group-id="5150645520-34">}</span><span·class="p">.</span><span·class="w"> |
| 175 | </span><span·class="nf">terminate</span><span·class="p"·data-group-id=" | 175 | </span><span·class="nf">terminate</span><span·class="p"·data-group-id="5150645520-35">(</span><span·class="p">_</span><span·class="n">Reason</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">Channels</span><span·class="p"·data-group-id="5150645520-35">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 176 | ····</span><span·class="ss">ok</span><span·class="p">.</span><span·class="w"> | 176 | ····</span><span·class="ss">ok</span><span·class="p">.</span><span·class="w"> |
| 177 | </span><span·class="c1">%%%-Internal·functions---------------------------------------------------</span><span·class="w"> | 177 | </span><span·class="c1">%%%-Internal·functions---------------------------------------------------</span><span·class="w"> |
| 178 | </span><span·class="nf">channels</span><span·class="p"·data-group-id=" | 178 | </span><span·class="nf">channels</span><span·class="p"·data-group-id="5150645520-36">(</span><span·class="p"·data-group-id="5150645520-36">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 179 | ····</span><span·class="p"·data-group-id=" | 179 | ····</span><span·class="p"·data-group-id="5150645520-37">[</span><span·class="ss">ch1</span><span·class="p">,</span><span·class="ss">ch2</span><span·class="p">,</span><span·class="ss">ch3</span><span·class="p"·data-group-id="5150645520-37">]</span><span·class="p">.</span><span·class="w"> |
| 180 | </span><span·class="nf">alloc</span><span·class="p"·data-group-id=" | 180 | </span><span·class="nf">alloc</span><span·class="p"·data-group-id="5150645520-38">(</span><span·class="p"·data-group-id="5150645520-39">[</span><span·class="n">Channel</span><span·class="p">|</span><span·class="n">Channels</span><span·class="p"·data-group-id="5150645520-39">]</span><span·class="p"·data-group-id="5150645520-38">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 181 | ····</span><span·class="p"·data-group-id=" | 181 | ····</span><span·class="p"·data-group-id="5150645520-40">{</span><span·class="n">Channel</span><span·class="p">,</span><span·class="n">Channels</span><span·class="p"·data-group-id="5150645520-40">}</span><span·class="p">;</span><span·class="w"> |
| 182 | </span><span·class="nf">alloc</span><span·class="p"·data-group-id=" | 182 | </span><span·class="nf">alloc</span><span·class="p"·data-group-id="5150645520-41">(</span><span·class="p"·data-group-id="5150645520-42">[</span><span·class="p"·data-group-id="5150645520-42">]</span><span·class="p"·data-group-id="5150645520-41">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 183 | ····</span><span·class="ss">false</span><span·class="p">.</span><span·class="w"> | 183 | ····</span><span·class="ss">false</span><span·class="p">.</span><span·class="w"> |
| 184 | </span><span·class="nf">free</span><span·class="p"·data-group-id=" | 184 | </span><span·class="nf">free</span><span·class="p"·data-group-id="5150645520-43">(</span><span·class="n">Channel</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Channels</span><span·class="p"·data-group-id="5150645520-43">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 185 | ····</span><span·class="p"·data-group-id=" | 185 | ····</span><span·class="p"·data-group-id="5150645520-44">[</span><span·class="n">Channel</span><span·class="p">|</span><span·class="n">Channels</span><span·class="p"·data-group-id="5150645520-44">]</span><span·class="p">.</span></code></pre><p>The·test·case·is·implemented·as·follows:</p><pre><code[·...·truncated·by·diffoscope;·len:·213,·SHA:·843a683ce3dab53541ec1454fd49f59d549618ab0816adeb00fb3b1d4ffe9595·...·]2-1">)</span><span·class="p">.</span><span·class="w"> |
| 186 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 186 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="9220162802-2">(</span><span·class="p"·data-group-id="9220162802-3">[</span><span·class="ss">s</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data-group-id="9220162802-3">]</span><span·class="p"·data-group-id="9220162802-2">)</span><span·class="p">.</span><span·class="w"> |
| 187 | </span><span·class="nf">s</span><span·class="p"·data-group-id=" | 187 | </span><span·class="nf">s</span><span·class="p"·data-group-id="9220162802-4">(</span><span·class="p"·data-group-id="9220162802-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 188 | ····</span><span·class="p"·data-group-id=" | 188 | ····</span><span·class="p"·data-group-id="9220162802-5">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">Pid</span><span·class="p"·data-group-id="9220162802-5">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">channel</span><s[·...·truncated·by·diffoscope;·len:·149,·SHA:·b32329a6bc298388c2975aeea63f8ff8167810eb4baeb10ac744fe6757ebb33a·...·]2-6">)</span><span·class="p">,</span><span·class="w"> |
| 189 | ····</span><span·class="p"·data-group-id=" | 189 | ····</span><span·class="p"·data-group-id="9220162802-7">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">Ch1</span><span·class="p"·data-group-id="9220162802-7">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">channel</span><s[·...·truncated·by·diffoscope;·len:·144,·SHA:·24ce71d59fcda45b42748221f2f4ef60003a806b1ec5f73807cff21d03f4f803·...·]2-8">)</span><span·class="p">,</span><span·class="w"> |
| 190 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">channel</span><span·class="p">:</span><span·class="nf">free</span><span·class="p"·data-group-id=" | 190 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">channel</span><span·class="p">:</span><span·class="nf">free</span><span·class="p"·data-group-id="9220162802-9">(</span><span·class="n">Ch1</span><span·class="p"·data-group-id="9220162802-9">)</span><span·class="p">,</span><span·class="w"> |
| 191 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">channel</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id=" | 191 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">channel</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id="9220162802-10">(</span><span·class="p"·data-group-id="9220162802-10">)</span><span·class="p">.</span></code></pre><h3·id="preparation"·class="section-heading"> |
| 192 | ··<a·href="#preparation"·class="hover-link"> | 192 | ··<a·href="#preparation"·class="hover-link"> |
| 193 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 193 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 194 | ··</a> | 194 | ··</a> |
| 195 | ··<span·class="text">Preparation</span> | 195 | ··<span·class="text">Preparation</span> |
| 196 | </h3> | 196 | </h3> |
| 197 | <p>First·of·all,·Cover·must·be·started.·This·spawns·a·process·which·owns·the·Cover | 197 | <p>First·of·all,·Cover·must·be·started.·This·spawns·a·process·which·owns·the·Cover |
| 198 | database·where·all·coverage·data·will·be·stored.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">cover</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 198 | database·where·all·coverage·data·will·be·stored.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">cover</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="0918016853-1">(</span><span·class="p"·data-group-id="0918016853-1">)</span><span·class="p">.</span><span·class="w"> |
| 199 | </span><span·class="p"·data-group-id=" | 199 | </span><span·class="p"·data-group-id="0918016853-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.90</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="0918016853-2">}</span></code></pre><p>To·include·other·nodes·in·the·coverage·analysis,·use |
| 200 | <a·href="cover.html#start/1"><code·class="inline">cover:start/1</code></a>.·All·cover-compiled·modules·will·then·be·loaded·on·all | 200 | <a·href="cover.html#start/1"><code·class="inline">cover:start/1</code></a>.·All·cover-compiled·modules·will·then·be·loaded·on·all |
| 201 | nodes,·and·data·from·all·nodes·will·be·summed·up·when·analysing.·For | 201 | nodes,·and·data·from·all·nodes·will·be·summed·up·when·analysing.·For |
| 202 | simplicity·this·example·only·involves·the·current·node.</p><p>Before·any·analysis·can·take·place,·the·involved·modules·must·be | 202 | simplicity·this·example·only·involves·the·current·node.</p><p>Before·any·analysis·can·take·place,·the·involved·modules·must·be |
| 203 | <em>cover-compiled</em>.·This·means·that·some·extra·information·is·added·to | 203 | <em>cover-compiled</em>.·This·means·that·some·extra·information·is·added·to |
| 204 | the·module·before·beging·compiled·into·a·binary·and | 204 | the·module·before·beging·compiled·into·a·binary·and |
| 205 | <a·href="cover_chapter.html#loading">loaded</a>.··The·source·file·of·the·module·is | 205 | <a·href="cover_chapter.html#loading">loaded</a>.··The·source·file·of·the·module·is |
| 206 | not·affected·and·no·<code·class="inline">.beam</code>·file·is·created.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">cover</span><span·class="p">:</span><span·class="nf">compile_module</span><span·class="p"·data-group-id=" | 206 | not·affected·and·no·<code·class="inline">.beam</code>·file·is·created.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">cover</span><span·class="p">:</span><span·class="nf">compile_module</span><span·class="p"·data-group-id="9002814307-1">(</span><span·class="ss">channel</span><span·class="p"·data-group-id="9002814307-1">)</span><span·class="p">.</span><span·class="w"> |
| 207 | </span><span·class="p"·data-group-id=" | 207 | </span><span·class="p"·data-group-id="9002814307-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="ss">channel</span><span·class="p"·data-group-id="9002814307-2">}</span></code></pre><p>Each·time·a·function·in·the·cover-compiled·module·<code·class="inline">channel</code>·is·called, |
| 208 | information·about·the·call·will·be·added·to·the·Cover·database.·Run·the·test | 208 | information·about·the·call·will·be·added·to·the·Cover·database.·Run·the·test |
| 209 | case:</p><pre><code·class="text">3>·test:s(). | 209 | case:</p><pre><code·class="text">3>·test:s(). |
| 210 | ok</code></pre><p>Cover·analysis·is·performed·by·examining·the·contents·of·the·Cover·database.·The | 210 | ok</code></pre><p>Cover·analysis·is·performed·by·examining·the·contents·of·the·Cover·database.·The |
| 211 | output·is·determined·by·two·parameters,·<code·class="inline">Level</code>·and·<code·class="inline">Analysis</code>.·<code·class="inline">Analysis</code>·is | 211 | output·is·determined·by·two·parameters,·<code·class="inline">Level</code>·and·<code·class="inline">Analysis</code>.·<code·class="inline">Analysis</code>·is |
| 212 | either·<code·class="inline">coverage</code>·or·<code·class="inline">calls</code>·and·determines·the·type·of·the·analysis.·<code·class="inline">Level</code>·is | 212 | either·<code·class="inline">coverage</code>·or·<code·class="inline">calls</code>·and·determines·the·type·of·the·analysis.·<code·class="inline">Level</code>·is |
| 213 | either·<code·class="inline">module</code>,·<code·class="inline">function</code>,·<code·class="inline">clause</code>,·or·<code·class="inline">line</code>·and·determines·the·level·of·the | 213 | either·<code·class="inline">module</code>,·<code·class="inline">function</code>,·<code·class="inline">clause</code>,·or·<code·class="inline">line</code>·and·determines·the·level·of·the |
| 214 | analysis.</p><h3·id="coverage-analysis"·class="section-heading"> | 214 | analysis.</p><h3·id="coverage-analysis"·class="section-heading"> |
| Offset 234, 200 lines modified | Offset 234, 200 lines modified | ||
| 234 | ··<span·class="text">Coverage·Analysis</span> | 234 | ··<span·class="text">Coverage·Analysis</span> |
| 235 | </h3> | 235 | </h3> |
| 236 | <p>Analysis·of·type·<code·class="inline">coverage</code>·is·used·to·find·out·how·much·of·the·code·has·been | 236 | <p>Analysis·of·type·<code·class="inline">coverage</code>·is·used·to·find·out·how·much·of·the·code·has·been |
| 237 | executed·and·how·much·has·not·been·executed.·Coverage·is·represented·by·a·tuple | 237 | executed·and·how·much·has·not·been·executed.·Coverage·is·represented·by·a·tuple |
| 238 | <code·class="inline">{Cov,NotCov}</code>,·where·<code·class="inline">Cov</code>·is·the·number·of·executable·lines·that·have·been | 238 | <code·class="inline">{Cov,NotCov}</code>,·where·<code·class="inline">Cov</code>·is·the·number·of·executable·lines·that·have·been |
| 239 | executed·at·least·once·and·<code·class="inline">NotCov</code>·is·the·number·of·executable·lines·that·have | 239 | executed·at·least·once·and·<code·class="inline">NotCov</code>·is·the·number·of·executable·lines·that·have |
| 240 | not·been·executed.</p><p>If·the·analysis·is·made·on·module·level,·the·result·is·given·for·the·entire | 240 | not·been·executed.</p><p>If·the·analysis·is·made·on·module·level,·the·result·is·given·for·the·entire |
| 241 | module·as·a·tuple·<code·class="inline">{Module,{Cov,NotCov}}</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">4>·</span><span·class="nc">cover</span><span·class="p">:</span><span·class="nf">analyse</span><span·class="p"·data-group-id=" | 241 | module·as·a·tuple·<code·class="inline">{Module,{Cov,NotCov}}</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">4>·</span><span·class="nc">cover</span><span·class="p">:</span><span·class="nf">analyse</span><span·class="p"·data-group-id="1158606116-1">(</span><span·class="ss">channel</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">coverage</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">module</span><span·class="p"·data-group-id="1158606116-1">)</span><span·class="p">.</span><span·class="w"> |
| 242 | </span><span·class="p"·data-group-id=" | 242 | </span><span·class="p"·data-group-id="1158606116-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="1158606116-3">{</span><span·class="ss">channel</span><span·class="p">,</span><span·class="p"·data-group-id="1158606116-4">{</span><span·class="mi">14</sp[·...·truncated·by·diffoscope;·len:·199,·SHA:·01b1d002704b2db64212b4e468f71886880b7ca39478561acbd06809b9397ad2·...·]-2">}</span></code></pre><p>For·<code·class="inline">channel</code>,·the·result·shows·that·14·lines·in·the·module·are·covered·but·one |
| 243 | line·is·not·covered.</p><p>If·the·analysis·is·made·on·function·level,·the·result·is·given·as·a·list·of | 243 | line·is·not·covered.</p><p>If·the·analysis·is·made·on·function·level,·the·result·is·given·as·a·list·of |
| 244 | tuples·<code·class="inline">{Function,{Cov,NotCov}}</code>,·one·for·each·function·in·the·module.·A | 244 | tuples·<code·class="inline">{Function,{Cov,NotCov}}</code>,·one·for·each·function·in·the·module.·A |
| 245 | function·is·specified·by·its·module·name,·function·name·and·arity:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">5>·</span><span·class="nc">cover</span><span·class="p">:</span><span·class="nf">analyse</span><span·class="p"·data-group-id=" | 245 | function·is·specified·by·its·module·name,·function·name·and·arity:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">5>·</span><span·class="nc">cover</span><span·class="p">:</span><span·class="nf">analyse</span><span·class="p"·data-group-id="6545550406-1">(</span><span·class="ss">channel</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">coverage</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">function</span><span·class="p"·data-group-id="6545550406-1">)</span><span·class="p">.</span><span·class="w"> |
| 246 | </span><span·class="p"·data-group-id=" | 246 | </span><span·class="p"·data-group-id="6545550406-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="6545550406-3">[</span><span·class="p"·data-group-id="6545550406-4">{</span><span·class="p"·data-group-id="6545550406-5">{</span><span·class="ss">channel<[·...·truncated·by·diffoscope;·len:·411,·SHA:·25e6dab1490f90de866fc85e1547836717e32e9334c5840ab2a2e5c848c2ef26·...·]-4">}</span><span·class="p">,</span><span·class="w"> |
| 247 | ·····</span><span·class="p"·data-group-id=" | 247 | ·····</span><span·class="p"·data-group-id="6545550406-7">{</span><span·class="p"·data-group-id="6545550406-8">{</span><span·class="ss">channel</span><span·class="p">,</span><span·class="ss">stop</span><span·class="p">,</span><span·class="mi">0</span><span·class="p"·data-group-id="6545550406-8">}</s[·...·truncated·by·diffoscope;·len:·249,·SHA:·c7af460dd358c22baeb32926511cb6909d597707b2ba321b872ee4e566d72da5·...·]-7">}</span><span·class="p">,</span><span·class="w"> |
| 248 | ·····</span><span·class="p"·data-group-id=" | 248 | ·····</span><span·class="p"·data-group-id="6545550406-10">{</span><span·class="p"·data-group-id="6545550406-11">{</span><span·class="ss">channel</span><span·class="p">,</span><span·class="ss">alloc</span><span·class="p">,</span><span·class="mi">0</span><span·class="p"·data-group-id="6545550406-11">[·...·truncated·by·diffoscope;·len:·255,·SHA:·4f1a919925d6c58bc74b87e1beecc8581c1e6944110506408474130ce4946f2d·...·]-10">}</span><span·class="p">,</span><span·class="w"> |
| 249 | ·····</span><span·class="p"·data-group-id=" | 249 | ·····</span><span·class="p"·data-group-id="6545550406-13">{</span><span·class="p"·data-group-id="6545550406-14">{</span><span·class="ss">channel</span><span·class="p">,</span><span·class="ss">free</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="6545550406-14">}[·...·truncated·by·diffoscope;·len:·254,·SHA:·2a0111c923330a8ae720d83f7d6c2349c0642aafcdb789335d1572f130fda9d5·...·]-13">}</span><span·class="p">,</span><span·class="w"> |
| 250 | ·····</span><span·class="p"·data-group-id=" | 250 | ·····</span><span·class="p"·data-group-id="6545550406-16">{</span><span·class="p"·data-group-id="6545550406-17">{</span><span·class="ss">channel</span><span·class="p">,</span><span·class="ss">init</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="6545550406-17">}[·...·truncated·by·diffoscope;·len:·254,·SHA:·b0d1095bc117717a6355ae2854ecb48ad77a71d35cf5aa9e8d0b534e0c1d8f52·...·]-16">}</span><span·class="p">,</span><span·class="w"> |
| 251 | ·····</span><span·class="p"·data-group-id=" | 251 | ·····</span><span·class="p"·data-group-id="6545550406-19">{</span><span·class="p"·data-group-id="6545550406-20">{</span><span·class="ss">channel</span><span·class="p">,</span><span·class="ss">handle_call</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="654555040[·...·truncated·by·diffoscope;·len:·261,·SHA:·3a3daeb0ff3675641d058aa615eb82b6eefec7bf50205fde0cf4cfe9aa3b69d8·...·]-19">}</span><span·class="p">,</span><span·class="w"> |
| 252 | ·····</span><span·class="p"·data-group-id=" | 252 | ·····</span><span·class="p"·data-group-id="6545550406-22">{</span><span·class="p"·data-group-id="6545550406-23">{</span><span·class="ss">channel</span><span·class="p">,</span><span·class="ss">terminate</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="6545550406-[·...·truncated·by·diffoscope;·len:·259,·SHA:·3822fe37926ffb0231d7dc4e5b23e2c9e708f8edff8e028f94be2fbb50393a7b·...·]-22">}</span><span·class="p">,</span><span·class="w"> |
| 253 | ·····</span><span·class="p"·data-group-id=" | 253 | ·····</span><span·class="p"·data-group-id="6545550406-25">{</span><span·class="p"·data-group-id="6545550406-26">{</span><span·class="ss">channel</span><span·class="p">,</span><span·class="ss">channels</span><span·class="p">,</span><span·class="mi">0</span><span·class="p"·data-group-id="6545550406-2[·...·truncated·by·diffoscope;·len:·258,·SHA:·435e1db3c93cd86be857e7720eb7b0310b0e2fd355fe4be599afa479ffea6dc9·...·]-25">}</span><span·class="p">,</span><span·class="w"> |
| 254 | ·····</span><span·class="p"·data-group-id=" | 254 | ·····</span><span·class="p"·data-group-id="6545550406-28">{</span><span·class="p"·data-group-id="6545550406-29">{</span><span·class="ss">channel</span><span·class="p">,</span><span·class="ss">alloc</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="6545550406-29">[·...·truncated·by·diffoscope;·len:·255,·SHA:·50791726ec143123399a391e3b569fb09c592a16be57e4b1a620e6387eface0b·...·]-28">}</span><span·class="p">,</span><span·class="w"> |
| 255 | ·····</span><span·class="p"·data-group-id=" | 255 | ·····</span><span·class="p"·data-group-id="6545550406-31">{</span><span·class="p"·data-group-id="6545550406-32">{</span><span·class="ss">channel</span><span·class="p">,</span><span·class="ss">free</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="6545550406-32">}[·...·truncated·by·diffoscope;·len:·361,·SHA:·7964ba22f2519765167d260efe24ba4c4d31a9b906c25b083d878433a563a5bd·...·]-2">}</span></code></pre><p>For·<code·class="inline">channel</code>,·the·result·shows·that·the·uncovered·line·is·in·the·function |
| 256 | <code·class="inline">channel:alloc/1</code>.</p><p>If·the·analysis·is·made·on·clause·level,·the·result·is·given·as·a·list·of·tuples | 256 | <code·class="inline">channel:alloc/1</code>.</p><p>If·the·analysis·is·made·on·clause·level,·the·result·is·given·as·a·list·of·tuples |
| 257 | <code·class="inline">{Clause,{Cov,NotCov}}</code>,·one·for·each·function·clause·in·the·module.·A·clause·is | 257 | <code·class="inline">{Clause,{Cov,NotCov}}</code>,·one·for·each·function·clause·in·the·module.·A·clause·is |
| 258 | specified·by·its·module·name,·function·name,·arity·and·position·within·the | 258 | specified·by·its·module·name,·function·name,·arity·and·position·within·the |
| 259 | function·definition:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">6>·</span><span·class="nc">cover</span><span·class="p">:</span><span·class="nf">analyse</span><span·class="p"·data-group-id=" | 259 | function·definition:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">6>·</span><span·class="nc">cover</span><span·class="p">:</span><span·class="nf">analyse</span><span·class="p"·data-group-id="6023928451-1">(</span><span·class="ss">channel</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">coverage</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">clause</span><span·class="p"·data-group-id="6023928451-1">)</span><span·class="p">.</span><span·class="w"> |
| 260 | </span><span·class="p"·data-group-id=" | 260 | </span><span·class="p"·data-group-id="6023928451-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="6023928451-3">[</span><span·class="p"·data-group-id="6023928451-4">{</span><span·class="p"·data-group-id="6023928451-5">{</span><span·class="ss">channel<[·...·truncated·by·diffoscope;·len:·460,·SHA:·b4d3f43b5cb4e29ea7198106c451c16a03417da6331b3bf710660cb19cac1819·...·]-4">}</span><span·class="p">,</span><span·class="w"> |
| 261 | ·····</span><span·class="p"·data-group-id=" | 261 | ·····</span><span·class="p"·data-group-id="6023928451-7">{</span><span·class="p"·data-group-id="6023928451-8">{</span><span·class="ss">channel</span><span·class="p">,</span><span·class="ss">stop</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">1</span>[·...·truncated·by·diffoscope;·len:·298,·SHA:·0d60b2c7be63e74dc05b5dd6f7051a374183bf9d46d13a2b03d80eadea1e5ba3·...·]-7">}</span><span·class="p">,</span><span·class="w"> |
| 262 | ·····</span><span·class="p"·data-group-id=" | 262 | ·····</span><span·class="p"·data-group-id="6023928451-10">{</span><span·class="p"·data-group-id="6023928451-11">{</span><span·class="ss">channel</span><span·class="p">,</span><span·class="ss">alloc</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">1</sp[·...·truncated·by·diffoscope;·len:·304,·SHA:·ea9307c952eb1246666388155b907e86ded033faa4324434ddc42d520bf4a873·...·]-10">}</span><span·class="p">,</span><span·class="w"> |
| 263 | ·····</span><span·class="p"·data-group-id=" | 263 | ·····</span><span·class="p"·data-group-id="6023928451-13">{</span><span·class="p"·data-group-id="6023928451-14">{</span><span·class="ss">channel</span><span·class="p">,</span><span·class="ss">free</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">1</spa[·...·truncated·by·diffoscope;·len:·303,·SHA:·6254c388cebbd13c12c3b6611c8c24099c2908dbb825f771d5f2a5acbd73cb5d·...·]-13">}</span><span·class="p">,</span><span·class="w"> |
| 264 | ·····</span><span·class="p"·data-group-id=" | 264 | ·····</span><span·class="p"·data-group-id="6023928451-16">{</span><span·class="p"·data-group-id="6023928451-17">{</span><span·class="ss">channel</span><span·class="p">,</span><span·class="ss">init</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">1</spa[·...·truncated·by·diffoscope;·len:·303,·SHA:·6dba4d1ae9201937763222c9d960d33513098eb3ccb9123d3b3935652589f858·...·]-16">}</span><span·class="p">,</span><span·class="w"> |
| 265 | ·····</span><span·class="p"·data-group-id=" | 265 | ·····</span><span·class="p"·data-group-id="6023928451-19">{</span><span·class="p"·data-group-id="6023928451-20">{</span><span·class="ss">channel</span><span·class="p">,</span><span·class="ss">handle_call</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi"[·...·truncated·by·diffoscope;·len:·310,·SHA:·2febd0b5cc4ba1c8efe7632ac494b7d6e0608aae4beb470df629201ab68c3e2d·...·]-19">}</span><span·class="p">,</span><span·class="w"> |
| 266 | ·····</span><span·class="p"·data-group-id=" | 266 | ·····</span><span·class="p"·data-group-id="6023928451-22">{</span><span·class="p"·data-group-id="6023928451-23">{</span><span·class="ss">channel</span><span·class="p">,</span><span·class="ss">handle_call</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi"[·...·truncated·by·diffoscope;·len:·310,·SHA:·a51835170e26661d889f6a71269330c2bdbb59942a27191f6db2920dfaa6d9e1·...·]-22">}</span><span·class="p">,</span><span·class="w"> |
| 267 | ·····</span><span·class="p"·data-group-id=" | 267 | ·····</span><span·class="p"·data-group-id="6023928451-25">{</span><span·class="p"·data-group-id="6023928451-26">{</span><span·class="ss">channel</span><span·class="p">,</span><span·class="ss">handle_call</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="mi"[·...·truncated·by·diffoscope;·len:·310,·SHA:·76d7b84125d0e5f38cf48d16c7e32ec58da1c037bcb77730cb9770f562020802·...·]-25">}</span><span·class="p">,</span><span·class="w"> |
| 268 | ·····</span><span·class="p"·data-group-id=" | 268 | ·····</span><span·class="p"·data-group-id="6023928451-28">{</span><span·class="p"·data-group-id="6023928451-29">{</span><span·class="ss">channel</span><span·class="p">,</span><span·class="ss">terminate</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="mi">1[·...·truncated·by·diffoscope;·len:·308,·SHA:·2902ce3fd84f9c0ed27064e46f27d5a79b80d38486632ff48f02414de0c4d8fb·...·]-28">}</span><span·class="p">,</span><span·class="w"> |
| 269 | ·····</span><span·class="p"·data-group-id=" | 269 | ·····</span><span·class="p"·data-group-id="6023928451-31">{</span><span·class="p"·data-group-id="6023928451-32">{</span><span·class="ss">channel</span><span·class="p">,</span><span·class="ss">channels</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">1<[·...·truncated·by·diffoscope;·len:·307,·SHA:·77192ec911097ba4b164a1977fd031da70bffda205173a0a37cef3dfdb696337·...·]-31">}</span><span·class="p">,</span><span·class="w"> |
| 270 | ·····</span><span·class="p"·data-group-id=" | 270 | ·····</span><span·class="p"·data-group-id="6023928451-34">{</span><span·class="p"·data-group-id="6023928451-35">{</span><span·class="ss">channel</span><span·class="p">,</span><span·class="ss">alloc</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">1</sp[·...·truncated·by·diffoscope;·len:·304,·SHA:·278cfd357402c2d2154f6e325f0a8dc9272110c5c5605fadfa9df74d3ba8e67d·...·]-34">}</span><span·class="p">,</span><span·class="w"> |
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| Offset 574, 15 lines modified | Offset 574, 15 lines modified | ||
| 574 | ······<div·class="specs"> | 574 | ······<div·class="specs"> |
| 575 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·analyse(Mod,·Limit)·->·ModAnalysis·::·<a·href="#t:mod_analysis/0">mod_analysis</a>() | 575 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·analyse(Mod,·Limit)·->·ModAnalysis·::·<a·href="#t:mod_analysis/0">mod_analysis</a>() |
| 576 | ·················when·Mod·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:module/0">module</a>(),·Limit·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0">non_neg_integer</a>().</pre> | 576 | ·················when·Mod·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:module/0">module</a>(),·Limit·::·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#t:non_neg_integer/0">non_neg_integer</a>().</pre> |
| 577 | ······</div> | 577 | ······</div> |
| 578 | <p>Collects·and·analyses·all·call·counters·for·module·<code·class="inline">Module</code>.</p><p>This·function·returns:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 578 | <p>Collects·and·analyses·all·call·counters·for·module·<code·class="inline">Module</code>.</p><p>This·function·returns:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="7875693665-1">{</span><span·class="n">Module</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ModuleCount</span><span·class="p">,</span><span·class="w">·</span><span·class="n">FuncAnalysisList</span><span·class="p"·data-group-id="78756[·...·truncated·by·diffoscope;·len:·651,·SHA:·1c7da2bc54dcb1da096f480c7d4d7ada534fa578ad62407c39aff890c8d443e4·...·]-1">}</span></code></pre><p>If·call·counters·are·still·running·while·<code·class="inline">analyse/0,1,2</code>·is·executing,·the·result |
| 579 | could·be·inconsistent.·This·happens·if·the·process·executing·<code·class="inline">analyse/0,1,2</code> | 579 | could·be·inconsistent.·This·happens·if·the·process·executing·<code·class="inline">analyse/0,1,2</code> |
| 580 | is·scheduled·out·so·some·other·process·can·increment·the·counters·that·are | 580 | is·scheduled·out·so·some·other·process·can·increment·the·counters·that·are |
| 581 | being·analysed.·Calling·<a·href="#pause/0"><code·class="inline">pause()</code></a>·before·analysing·takes·care·of | 581 | being·analysed.·Calling·<a·href="#pause/0"><code·class="inline">pause()</code></a>·before·analysing·takes·care·of |
| 582 | that·problem.</p><p>All·functions·with·a·<code·class="inline">FuncCallCount</code>·lower·than·<code·class="inline">Limit</code>·are·excluded·from | 582 | that·problem.</p><p>All·functions·with·a·<code·class="inline">FuncCallCount</code>·lower·than·<code·class="inline">Limit</code>·are·excluded·from |
| 583 | <code·class="inline">FuncAnalysisList</code>.·They·are·still·included·in·<code·class="inline">ModCallCount</code>,·though.</p> | 583 | <code·class="inline">FuncAnalysisList</code>.·They·are·still·included·in·<code·class="inline">ModCallCount</code>,·though.</p> |
| 584 | ··</section> | 584 | ··</section> |
| 585 | </section> | 585 | </section> |
| Offset 152, 130 lines modified | Offset 152, 130 lines modified | ||
| 152 | no·trace·message·has·to·be·generated.·Some·measurements·indicates·performance | 152 | no·trace·message·has·to·be·generated.·Some·measurements·indicates·performance |
| 153 | degradations·in·the·vicinity·of·10·percent.</p><p>The·following·sections·show·some·examples·of·profiling·with·<a·href="cprof.html"><code·class="inline">cprof</code></a>.</p><h2·id="example-background-work"·class="section-heading"> | 153 | degradations·in·the·vicinity·of·10·percent.</p><p>The·following·sections·show·some·examples·of·profiling·with·<a·href="cprof.html"><code·class="inline">cprof</code></a>.</p><h2·id="example-background-work"·class="section-heading"> |
| 154 | ··<a·href="#example-background-work"·class="hover-link"> | 154 | ··<a·href="#example-background-work"·class="hover-link"> |
| 155 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 155 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 156 | ··</a> | 156 | ··</a> |
| 157 | ··<span·class="text">Example:·Background·work</span> | 157 | ··<span·class="text">Example:·Background·work</span> |
| 158 | </h2> | 158 | </h2> |
| 159 | <p>From·the·Erlang·shell:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">cprof</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 159 | <p>From·the·Erlang·shell:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">cprof</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="4647298686-1">(</span><span·class="p"·data-group-id="4647298686-1">)</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">cprof</span><span·class="p">:</span><span·class="nf">pause</span><span·class="p"·data-group-id="4647298686-2">(</spa[·...·truncated·by·diffoscope;·len:·43,·SHA:·a090307072a1a3f05d6bf3131d87e9e2b5e9e7b2d1e76bda32c742d73cf3dca0·...·]-2">)</span><span·class="p">.</span><span·class="w">·</span><span·class="c1">%·Stop·counters·just·after·start</span><span·class="w"> |
| 160 | </span><span·class="mi">8492</span><span·class="gp·unselectable"> | 160 | </span><span·class="mi">8492</span><span·class="gp·unselectable"> |
| 161 | 2>·</span><span·class="nc">cprof</span><span·class="p">:</span><span·class="nf">analyse</span><span·class="p"·data-group-id=" | 161 | 2>·</span><span·class="nc">cprof</span><span·class="p">:</span><span·class="nf">analyse</span><span·class="p"·data-group-id="4647298686-3">(</span><span·class="p"·data-group-id="4647298686-3">)</span><span·class="p">.</span><span·class="w"> |
| 162 | </span><span·class="p"·data-group-id=" | 162 | </span><span·class="p"·data-group-id="4647298686-4">{</span><span·class="mi">539</span><span·class="p">,</span><span·class="w"> |
| 163 | ·</span><span·class="p"·data-group-id=" | 163 | ·</span><span·class="p"·data-group-id="4647298686-5">[</span><span·class="p"·data-group-id="4647298686-6">{</span><span·class="ss">shell</span><span·class="p">,</span><span·class="mi">155</span><span·class="p">,</span><span·class="w"> |
| 164 | ·········</span><span·class="p"·data-group-id=" | 164 | ·········</span><span·class="p"·data-group-id="4647298686-7">[</span><span·class="p"·data-group-id="4647298686-8">{</span><span·class="p"·data-group-id="4647298686-9">{</span><span·class="ss">shell</span><span·class="p">,</span><span·class="ss">prep_check</span><span·class="p">,</span><span·class="mi">[·...·truncated·by·diffoscope;·len:·152,·SHA:·4c8daa8995cd84d6776694ce8d760bb6da683e17796da500d8a1180b1c15b7d3·...·]-8">}</span><span·class="p">,</span><span·class="w"> |
| 165 | ··········</span><span·class="p"·data-group-id=" | 165 | ··········</span><span·class="p"·data-group-id="4647298686-10">{</span><span·class="p"·data-group-id="4647298686-11">{</span><span·class="ss">shell</span><span·class="p">,</span><span·class="ss">used_records</span><span·class="p">,</span><span·class="mi">4</span><span·class="p"·data-group-id="4647298686[·...·truncated·by·diffoscope;·len:·104,·SHA:·5daaad8c3275ce991c3de3d9f260806bf757e0140bb49fdb7effdb832c607394·...·]-10">}</span><span·class="p">,</span><span·class="w"> |
| 166 | ··········</span><span·class="p"·data-group-id=" | 166 | ··········</span><span·class="p"·data-group-id="4647298686-12">{</span><span·class="p"·data-group-id="4647298686-13">{</span><span·class="ss">shell</span><span·class="p">,</span><span·class="ss">used_records</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="4647298686[·...·truncated·by·diffoscope;·len:·104,·SHA:·a69fda6676e450aecbc137765ab75a065d13d559fd63337b756b5404bd023d1f·...·]-12">}</span><span·class="p">,</span><span·class="w"> |
| 167 | ··········</span><span·class="p"·data-group-id=" | 167 | ··········</span><span·class="p"·data-group-id="4647298686-14">{</span><span·class="p"·data-group-id="4647298686-15">{</span><span·class="ss">shell</span><span·class="p">,</span><span·class="ss">used_record_defs</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="464729[·...·truncated·by·diffoscope;·len:·107,·SHA:·29753349295bf6c2c4998224736858c98e838da2636ac47556e4351dbdd64a44·...·]-14">}</span><span·class="p">,</span><span·class="w"> |
| 168 | ··········</span><span·class="p"·data-group-id=" | 168 | ··········</span><span·class="p"·data-group-id="4647298686-16">{</span><span·class="p"·data-group-id="4647298686-17">{</span><span·class="ss">shell</span><span·class="p">,</span><span·class="ss">record_defs</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="4647298686-[·...·truncated·by·diffoscope;·len:·102,·SHA:·6a0d7077e1b1a18f347e794572771dc7482baa27f59d4beec15a688299b170ca·...·]-16">}</span><span·class="p">,</span><span·class="w"> |
| 169 | ··········</span><span·class="p"·data-group-id=" | 169 | ··········</span><span·class="p"·data-group-id="4647298686-18">{</span><span·class="p"·data-group-id="4647298686-19">{</span><span·class="ss">shell</span><span·class="p">,</span><span·class="ss">record_bindings</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="4647298[·...·truncated·by·diffoscope;·len:·106,·SHA:·006000ff6e00276b37ca85406fcaa48b798cd84c28d0574d079f7b5e10a8865e·...·]-18">}</span><span·class="p">,</span><span·class="w"> |
| 170 | ··········</span><span·class="p"·data-group-id=" | 170 | ··········</span><span·class="p"·data-group-id="4647298686-20">{</span><span·class="p"·data-group-id="4647298686-21">{</span><span·class="ss">shell</span><span·class="p">,</span><span·class="ss">exprs</span><span·class="p">,</span><span·class="mi">7</span><span·class="p"·data-group-id="4647298686-21">}<[·...·truncated·by·diffoscope;·len:·96,·SHA:·0d7c910ccd8f05ec642a50c6bde51923bf9e44f35ee64afd71c6b7cdb4c61d17·...·]-20">}</span><span·class="p">,</span><span·class="w"> |
| 171 | ··········</span><span·class="p"·data-group-id=" | 171 | ··········</span><span·class="p"·data-group-id="4647298686-22">{</span><span·class="p"·data-group-id="4647298686-23">{</span><span·class="ss">shell</span><span·class="p">,</span><span·class="ss">expr</span><span·class="p">,</span><span·class="mi">4</span><span·class="p"·data-group-id="4647298686-23">}</[·...·truncated·by·diffoscope;·len:·95,·SHA:·f814b039719f3f42fd449f7c5e21d9c58000961de04f591964ebf74049437aa0·...·]-22">}</span><span·class="p">,</span><span·class="w"> |
| 172 | ··········</span><span·class="p"·data-group-id=" | 172 | ··········</span><span·class="p"·data-group-id="4647298686-24">{</span><span·class="p"·data-group-id="4647298686-25">{</span><span·class="ss">shell</span><span·class="p">,</span><span·class="ss">expand_records</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="46472986[·...·truncated·by·diffoscope;·len:·105,·SHA:·058310c94a083a14778f6cbff51850d0c0183e7f2717af12d931f389e36466dd·...·]-24">}</span><span·class="p">,</span><span·class="w"> |
| 173 | ··········</span><span·class="p"·data-group-id=" | 173 | ··········</span><span·class="p"·data-group-id="4647298686-26">{</span><span·class="p"·data-group-id="4647298686-27">{</span><span·class="ss">shell</span><span·class="p">,</span><span·class="ss">check_command</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="464729868[·...·truncated·by·diffoscope;·len:·104,·SHA:·7d3fd9ee22e034356e00024ec8288eca3fded6e0add7cd3833645669a09ad04d·...·]-26">}</span><span·class="p">,</span><span·class="w"> |
| 174 | ··········</span><span·class="p"·data-group-id=" | 174 | ··········</span><span·class="p"·data-group-id="4647298686-28">{</span><span·class="p"·data-group-id="4647298686-29">{</span><span·class="ss">shell</span><span·class="p">,</span><span·class="ss">apply_fun</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="4647298686-29[·...·truncated·by·diffoscope;·len:·100,·SHA:·45ff34cbf2e166aa6752c2c22e179ab181403aeeedf511be24a83f42c89fe6ae·...·]-28">}</span><span·class="p">,</span><span·class="w"> |
| 175 | ··········</span><span·class="p"·data-group-id=" | 175 | ··········</span><span·class="p"·data-group-id="4647298686-30">{</span><span·class="p"·data-group-id="4647298686-31">{</span><span·class="ss">shell</span><span·class="p">,</span><span·class="ss">'-exprs/7-lc$^0/1-0-'</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-gro[·...·truncated·by·diffoscope;·len:·120,·SHA:·a06a7c5a01f2cc0695ef58d36c440643705557a68e3cfd7a6529dd1b415ee183·...·]-30">}</span><span·class="p">,</span><span·class="w"> |
| 176 | ··········</span><span·class="p"·data-group-id=" | 176 | ··········</span><span·class="p"·data-group-id="4647298686-32">{</span><span·class="p"·data-group-id="4647298686-33">{</span><span·class="ss">shell</span><span·class="p">,</span><span·class="ss">'-eval_loop/3-fun-0-'</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-gro[·...·truncated·by·diffoscope;·len:·227,·SHA:·993ea01ecab4aa084bfc2136cb3906799d52f047cad7106cd44f129ea337c598·...·]-6">}</span><span·class="p">,</span><span·class="w"> |
| 177 | ··</span><span·class="c1">%%·Information·about·many·modules·omitted.</span><span·class="w"> | 177 | ··</span><span·class="c1">%%·Information·about·many·modules·omitted.</span><span·class="w"> |
| 178 | ·····················</span><span·class="p">.</span><span·class="w"> | 178 | ·····················</span><span·class="p">.</span><span·class="w"> |
| 179 | ·····················</span><span·class="p">.</span><span·class="w"> | 179 | ·····················</span><span·class="p">.</span><span·class="w"> |
| 180 | ·····················</span><span·class="p">.</span><span·class="w"> | 180 | ·····················</span><span·class="p">.</span><span·class="w"> |
| 181 | ··</span><span·class="c1">%%·Here·is·the·last·part.</span><span·class="w"> | 181 | ··</span><span·class="c1">%%·Here·is·the·last·part.</span><span·class="w"> |
| 182 | ··</span><span·class="p"·data-group-id=" | 182 | ··</span><span·class="p"·data-group-id="4647298686-34">{</span><span·class="ss">erts_internal</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="p"·data-group-id="4647298686-35">[</span><span·class="p"·data-group-id="4647298686-36">{</span><span·class="p"[·...·truncated·by·diffoscope;·len:·438,·SHA:·c794341a42c94141a4510b72eac284ac70a8f10f3390d05ff2d83f2a4903d7f7·...·]-34">}</span><span·class="p">,</span><span·class="w"> |
| 183 | ··</span><span·class="p"·data-group-id="1293065162-38">{</span><span·class="ss">otp_internal</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="p"·data-group-id="1293065162-39">[</span><span·class="p"·data-group-id="1293065162-40">{</span><span·class="p"·data-group-id="1293065162-41">{</span><span·class="ss">otp_internal</span><span·class="p">,</span><span·class="ss">obsolete</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="1293065162-41">}</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="1293065162-40">}</span><span·class="p"·data-group-id="1293065162-39">]</span><span·class="p"·data-group-id="1293065162-38">}</span><span·class="p">,</span><span·class="w"> | ||
| 184 | ··</span><span·class="p"·data-group-id="1293065162-42">{</span><span·class="ss">maps</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="p"·data-group-id="1293065162-43">[</span><span·class="p"·data-group-id="1293065162-44">{</span><span·class="p"·data-group-id="1293065162-45">{</span><span·class="ss">maps</span><span·class="p">,</span><span·class="ss">from_list</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="1293065162-45">}</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="1293065162-44">}</span><span·class="p"·data-group-id="1293065162-43">]</span><span·class="p"·data-group-id="1293065162-42">}</span><span·class="p">,</span><span·class="w"> | ||
| 185 | ··</span><span·class="p"·data-group-id=" | 183 | ··</span><span·class="p"·data-group-id="4647298686-38">{</span><span·class="ss">otp_internal</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="p"·data-group-id="4647298686-39">[</span><span·class="p"·data-group-id="4647298686-40">{</span><span·class="p"·[·...·truncated·by·diffoscope;·len:·482,·SHA:·4cad304c25a0a49a694d68ade80b496efe35ddf1ad19e6baea535730355691b7·...·]"> |
| 184 | ··</span><span·class="p"·data-group-id="4647298686-42">{</span><span·class="ss">maps</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="p"·data-group-id="4647298686-43">[</span><span·class="p"·data-group-id="4647298686-44">{</span><span·class="p"·data-group-id="4647298686-45">{</span><span·class="ss">maps</span><span·class="p">,</span><span·class="ss">from_list</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="4647298686-45">}</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="4647298686-44">}</span><span·class="p"·data-group-id="4647298686-43">]</span><span·class="p"·data-group-id="4647298686-42">}</span><span·class="p">,</span><span·class="w"> | ||
| 185 | ··</span><span·class="p"·data-group-id="4647298686-46">{</span><span·class="ss">erl_internal</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="p"·data-group-id="4647298686-47">[</span><span·class="p"·data-group-id="4647298686-48">{</span><span·class="p"·data-group-id="4647298686-49">{</span><span·class="ss">erl_internal</span><span·class="p">,</span><span·class="ss">bif</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="4647298686-49">}</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="4647298686-48">}</span><span·class="p"·data-group-id="4647298686-47">]</span><span·class="p"·data-group-id="4647298686-46">}</span><span·class="p"·data-group-id="4647298686-5">]</span><span·class="p"·data-group-id="4647298686-4">}</span><span·class="gp·unselectable"> | ||
| 186 | 3>·</span><span·class="nc">cprof</span><span·class="p">:</span><span·class="nf">analyse</span><span·class="p"·data-group-id=" | 186 | 3>·</span><span·class="nc">cprof</span><span·class="p">:</span><span·class="nf">analyse</span><span·class="p"·data-group-id="4647298686-50">(</span><span·class="ss">cprof</span><span·class="p"·data-group-id="4647298686-50">)</span><span·class="p">.</span><span·class="w"> |
| 187 | </span><span·class="p"·data-group-id=" | 187 | </span><span·class="p"·data-group-id="4647298686-51">{</span><span·class="ss">cprof</span><span·class="p">,</span><span·class="mi">3</span><span·class="p">,</span><span·class="p"·data-group-id="4647298686-52">[</span><span·class="p"·data-group-id="4647298686-53">{</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·831,·SHA:·d66cc02e907b8435b2f13c01c6a6fe6e6ecd310288dfb8616854620e54f50df1·...·]-51">}</span><span·class="gp·unselectable"> |
| 188 | 4>·</span><span·class="nc">cprof</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id=" | 188 | 4>·</span><span·class="nc">cprof</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id="4647298686-57">(</span><span·class="p"·data-group-id="4647298686-57">)</span><span·class="p">.</span><span·class="w"> |
| 189 | </span><span·class="mi">8586</span></code></pre><p>The·example·showed·some·of·the·background·work·that·the·shell·performs·just·to | 189 | </span><span·class="mi">8586</span></code></pre><p>The·example·showed·some·of·the·background·work·that·the·shell·performs·just·to |
| 190 | interpret·the·first·command·line.</p><p>What·is·captured·in·this·example·is·the·part·of·the·work·the·shell·does·while | 190 | interpret·the·first·command·line.</p><p>What·is·captured·in·this·example·is·the·part·of·the·work·the·shell·does·while |
| 191 | interpreting·the·command·line·that·occurs·between·the·actual·calls·to | 191 | interpreting·the·command·line·that·occurs·between·the·actual·calls·to |
| 192 | <a·href="cprof.html#start/0"><code·class="inline">cprof:start()</code></a>·and·<a·href="cprof.html#analyse/1"><code·class="inline">cprof:analyse()</code></a>.</p><h2·id="example-one-module"·class="section-heading"> | 192 | <a·href="cprof.html#start/0"><code·class="inline">cprof:start()</code></a>·and·<a·href="cprof.html#analyse/1"><code·class="inline">cprof:analyse()</code></a>.</p><h2·id="example-one-module"·class="section-heading"> |
| 193 | ··<a·href="#example-one-module"·class="hover-link"> | 193 | ··<a·href="#example-one-module"·class="hover-link"> |
| 194 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 194 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 195 | ··</a> | 195 | ··</a> |
| 196 | ··<span·class="text">Example:·One·module</span> | 196 | ··<span·class="text">Example:·One·module</span> |
| 197 | </h2> | 197 | </h2> |
| 198 | <p>From·the·Erlang·shell:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">cprof</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 198 | <p>From·the·Erlang·shell:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">cprof</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="6849720630-1">(</span><span·class="p"·data-group-id="6849720630-1">)</span><span·class="p">,</span><span·class="n">R</span><span·class="o">=</span><span·class="nc">calendar</span><span·class="p">:</span><span·class="nf">day_of_the_week</span><span·class="p[·...·truncated·by·diffoscope;·len:·419,·SHA:·0a5fa379393f32af9b76bb434da62bd484f4de6a9611f86b665e43a774528fd7·...·]-3">)</span><span·class="p">,</span><span·class="n">R</span><span·class="p">.</span><span·class="w"> |
| 199 | </span><span·class="mi">1</span><span·class="gp·unselectable"> | 199 | </span><span·class="mi">1</span><span·class="gp·unselectable"> |
| 200 | 2>·</span><span·class="nc">cprof</span><span·class="p">:</span><span·class="nf">analyse</span><span·class="p"·data-group-id=" | 200 | 2>·</span><span·class="nc">cprof</span><span·class="p">:</span><span·class="nf">analyse</span><span·class="p"·data-group-id="6849720630-4">(</span><span·class="ss">calendar</span><span·class="p"·data-group-id="6849720630-4">)</span><span·class="p">.</span><span·class="w"> |
| 201 | </span><span·class="p"·data-group-id=" | 201 | </span><span·class="p"·data-group-id="6849720630-5">{</span><span·class="ss">calendar</span><span·class="p">,</span><span·class="mi">9</span><span·class="p">,</span><span·class="w"> |
| 202 | ··········</span><span·class="p"·data-group-id=" | 202 | ··········</span><span·class="p"·data-group-id="6849720630-6">[</span><span·class="p"·data-group-id="6849720630-7">{</span><span·class="p"·data-group-id="6849720630-8">{</span><span·class="ss">calendar</span><span·class="p">,</span><span·class="ss">last_day_of_the_month1</span><span·class="p">,</span><s[·...·truncated·by·diffoscope;·len:·166,·SHA:·45f3c75252bb63ee84eaaf2093663097e402328a25a3edcbcb9d45a6e7184551·...·]-7">}</span><span·class="p">,</span><span·class="w"> |
| 203 | ···········</span><span·class="p"·data-group-id=" | 203 | ···········</span><span·class="p"·data-group-id="6849720630-9">{</span><span·class="p"·data-group-id="6849720630-10">{</span><span·class="ss">calendar</span><span·class="p">,</span><span·class="ss">last_day_of_the_month</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·114,·SHA:·5311e07e8b7ba06f2fb60d61bb3aa2351319dc5f720fafeb4a0660565a9ac7d7·...·]-9">}</span><span·class="p">,</span><span·class="w"> |
| 204 | ···········</span><span·class="p"·data-group-id=" | 204 | ···········</span><span·class="p"·data-group-id="6849720630-11">{</span><span·class="p"·data-group-id="6849720630-12">{</span><span·class="ss">calendar</span><span·class="p">,</span><span·class="ss">is_leap_year1</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="684972[·...·truncated·by·diffoscope;·len:·107,·SHA:·5d7ce43dcf76fc1b8d1ad255996eca9079b1ad6968bf6b86feb8b50713fdca5d·...·]-11">}</span><span·class="p">,</span><span·class="w"> |
| 205 | ···········</span><span·class="p"·data-group-id=" | 205 | ···········</span><span·class="p"·data-group-id="6849720630-13">{</span><span·class="p"·data-group-id="6849720630-14">{</span><span·class="ss">calendar</span><span·class="p">,</span><span·class="ss">is_leap_year</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="6849720[·...·truncated·by·diffoscope;·len:·106,·SHA:·013dce1c62d5ddd55c202fc18e9bdcd7f06b569056725357ab115ba3a1ec835b·...·]-13">}</span><span·class="p">,</span><span·class="w"> |
| 206 | ···········</span><span·class="p"·data-group-id=" | 206 | ···········</span><span·class="p"·data-group-id="6849720630-15">{</span><span·class="p"·data-group-id="6849720630-16">{</span><span·class="ss">calendar</span><span·class="p">,</span><span·class="ss">dy</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="6849720630-16">}<[·...·truncated·by·diffoscope;·len:·96,·SHA:·d5e4cf2e9261fda8a2eac95bb4e886f26f4cf1c264a602efa3b1aa8360e74e38·...·]-15">}</span><span·class="p">,</span><span·class="w"> |
| 207 | ···········</span><span·class="p"·data-group-id=" | 207 | ···········</span><span·class="p"·data-group-id="6849720630-17">{</span><span·class="p"·data-group-id="6849720630-18">{</span><span·class="ss">calendar</span><span·class="p">,</span><span·class="ss">dm</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="6849720630-18">}<[·...·truncated·by·diffoscope;·len:·96,·SHA:·d5e4cf2e9261fda8a2eac95bb4e886f26f4cf1c264a602efa3b1aa8360e74e38·...·]-17">}</span><span·class="p">,</span><span·class="w"> |
| 208 | ···········</span><span·class="p"·data-group-id=" | 208 | ···········</span><span·class="p"·data-group-id="6849720630-19">{</span><span·class="p"·data-group-id="6849720630-20">{</span><span·class="ss">calendar</span><span·class="p">,</span><span·class="ss">df</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="6849720630-20">}<[·...·truncated·by·diffoscope;·len:·96,·SHA:·d5e4cf2e9261fda8a2eac95bb4e886f26f4cf1c264a602efa3b1aa8360e74e38·...·]-19">}</span><span·class="p">,</span><span·class="w"> |
| 209 | ···········</span><span·class="p"·data-group-id=" | 209 | ···········</span><span·class="p"·data-group-id="6849720630-21">{</span><span·class="p"·data-group-id="6849720630-22">{</span><span·class="ss">calendar</span><span·class="p">,</span><span·class="ss">day_of_the_week</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="6849[·...·truncated·by·diffoscope;·len:·109,·SHA:·81d03ec78c4e6f524c32138b1d5ac3d91e0b3ecf4ffc45c635999401d4d91e75·...·]-21">}</span><span·class="p">,</span><span·class="w"> |
| 210 | ···········</span><span·class="p"·data-group-id=" | 210 | ···········</span><span·class="p"·data-group-id="6849720630-23">{</span><span·class="p"·data-group-id="6849720630-24">{</span><span·class="ss">calendar</span><span·class="p">,</span><span·class="ss">date_to_gregorian_days</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-i[·...·truncated·by·diffoscope;·len:·223,·SHA:·f5ea7ab450bb0d2eba21ad698e084a33e43f921f15d49eb590ed51a8ef9163a5·...·]-5">}</span><span·class="gp·unselectable"> |
| 211 | 3>·</span><span·class="nc">cprof</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id=" | 211 | 3>·</span><span·class="nc">cprof</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id="6849720630-25">(</span><span·class="p"·data-group-id="6849720630-25">)</span><span·class="p">.</span><span·class="w"> |
| 212 | </span><span·class="mi">8648</span></code></pre><p>The·example·tells·us·that·"Aktiebolaget·LM·Ericsson·&·Co"·was·registered·on·a | 212 | </span><span·class="mi">8648</span></code></pre><p>The·example·tells·us·that·"Aktiebolaget·LM·Ericsson·&·Co"·was·registered·on·a |
| 213 | Monday·(since·the·return·value·of·the·first·command·is·1),·and·that·the | 213 | Monday·(since·the·return·value·of·the·first·command·is·1),·and·that·the |
| 214 | <code·class="inline">calendar</code>·module·needed·9·function·calls·to·calculate·that.</p><p>Using·<code·class="inline">cprof:analyse()</code>·in·this·example·also·shows·approximately·the·same | 214 | <code·class="inline">calendar</code>·module·needed·9·function·calls·to·calculate·that.</p><p>Using·<code·class="inline">cprof:analyse()</code>·in·this·example·also·shows·approximately·the·same |
| 215 | background·work·as·in·the·first·example.</p><h2·id="example-in-the-code"·class="section-heading"> | 215 | background·work·as·in·the·first·example.</p><h2·id="example-in-the-code"·class="section-heading"> |
| 216 | ··<a·href="#example-in-the-code"·class="hover-link"> | 216 | ··<a·href="#example-in-the-code"·class="hover-link"> |
| 217 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 217 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 218 | ··</a> | 218 | ··</a> |
| 219 | ··<span·class="text">Example:·In·the·code</span> | 219 | ··<span·class="text">Example:·In·the·code</span> |
| 220 | </h2> | 220 | </h2> |
| 221 | <p>Write·a·module:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="5267250625-1">(</span><span·class="ss">sort</span><span·class="p"·data-group-id="5267250625-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 222 | < | 221 | <p>Write·a·module:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="9600750736-1">(</span><span·class="ss">sort</span><span·class="p"·data-group-id="9600750736-1">)</span><span·class="p">.</span><span·class="w"> |
| 222 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="9600750736-2">(</span><span·class="p"·data-group-id="9600750736-3">[</span><span·class="ss">do</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id="9600750736-3">]</span><span·class="p"·data-group-id="9600750736-2">)</span><span·class="p">.</span><span·class="w"> | ||
| 223 | </span><span·class="nf">do</span><span·class="p"·data-group-id=" | 223 | </span><span·class="nf">do</span><span·class="p"·data-group-id="9600750736-4">(</span><span·class="n">N</span><span·class="p"·data-group-id="9600750736-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 224 | ····</span><span·class="nc">cprof</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id=" | 224 | ····</span><span·class="nc">cprof</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id="9600750736-5">(</span><span·class="p"·data-group-id="9600750736-5">)</span><span·class="p">,</span><span·class="w"> |
| 225 | ····</span><span·class="nc">cprof</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 225 | ····</span><span·class="nc">cprof</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="9600750736-6">(</span><span·class="p"·data-group-id="9600750736-6">)</span><span·class="p">,</span><span·class="w"> |
| 226 | ····</span><span·class="nf">do</span><span·class="p"·data-group-id=" | 226 | ····</span><span·class="nf">do</span><span·class="p"·data-group-id="9600750736-7">(</span><span·class="n">N</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9600750736-8">[</span><span·class="p"·data-group-id="9600750736-8">]</span><span·class="p"·data-group-id="9600750736-7">)</span><span·class="p">.</span><span·class="w"> |
| 227 | </span><span·class="nf">do</span><span·class="p"·data-group-id=" | 227 | </span><span·class="nf">do</span><span·class="p"·data-group-id="9600750736-9">(</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="n">L</span><span·class="p"·data-group-id="9600750736-9">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 228 | ····</span><span·class="n">R</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">sort</span><span·class="p"·data-group-id=" | 228 | ····</span><span·class="n">R</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">sort</span><span·class="p"·data-group-id="9600750736-10">(</span><span·class="n">L</span><span·class="p"·data-group-id="9600750736-10">)</span><span·class="p">,</span><span·class="w"> |
| 229 | ····</span><span·class="nc">cprof</span><span·class="p">:</span><span·class="nf">pause</span><span·class="p"·data-group-id=" | 229 | ····</span><span·class="nc">cprof</span><span·class="p">:</span><span·class="nf">pause</span><span·class="p"·data-group-id="9600750736-11">(</span><span·class="p"·data-group-id="9600750736-11">)</span><span·class="p">,</span><span·class="w"> |
| 230 | ····</span><span·class="n">R</span><span·class="p">;</span><span·class="w"> | 230 | ····</span><span·class="n">R</span><span·class="p">;</span><span·class="w"> |
| 231 | </span><span·class="nf">do</span><span·class="p"·data-group-id=" | 231 | </span><span·class="nf">do</span><span·class="p"·data-group-id="9600750736-12">(</span><span·class="n">N</span><span·class="p">,</span><span·class="w">·</span><span·class="n">L</span><span·class="p"·data-group-id="9600750736-12">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 232 | ····</span><span·class="nf">do</span><span·class="p"·data-group-id=" | 232 | ····</span><span·class="nf">do</span><span·class="p"·data-group-id="9600750736-13">(</span><span·class="n">N</span><span·class="o">-</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9600750736-14">[</span><span·class="nc">rand</span><span·class="p">:</span><span·[·...·truncated·by·diffoscope;·len:·717,·SHA:·fc611f54b6ce7327d1191403c1b726356a806eb237226dcf4e6d10086b5ca486·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 233 | </span><span·class="p"·data-group-id=" | 233 | </span><span·class="p"·data-group-id="0355572813-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="ss">sort</span><span·class="p"·data-group-id="0355572813-2">}</span><span·class="gp·unselectable"> |
| 234 | 2>·</span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">seed</span><span·class="p"·data-group-id=" | 234 | 2>·</span><span·class="nc">rand</span><span·class="p">:</span><span·class="nf">seed</span><span·class="p"·data-group-id="0355572813-3">(</span><span·class="ss">default</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">42</span><span·class="p"·data-group-id="0355572813-3">)</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ok</span><span·class="p">.</span><span·class="w"> |
| 235 | </span><span·class="ss">ok</span><span·class="p">.</span><span·class="gp·unselectable"> | 235 | </span><span·class="ss">ok</span><span·class="p">.</span><span·class="gp·unselectable"> |
| 236 | 3>·</span><span·class="nc">sort</span><span·class="p">:</span><span·class="nf">do</span><span·class="p"·data-group-id=" | 236 | 3>·</span><span·class="nc">sort</span><span·class="p">:</span><span·class="nf">do</span><span·class="p"·data-group-id="0355572813-4">(</span><span·class="mi">1000</span><span·class="p"·data-group-id="0355572813-4">)</span><span·class="p">.</span><span·class="w"> |
| 237 | </span><span·class="p"·data-group-id=" | 237 | </span><span·class="p"·data-group-id="0355572813-5">[</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">0</span><span·class="p">,</span><span·class="mi">1</span><span·class="p">,</span><span·class="mi">1</span><span·class="[·...·truncated·by·diffoscope;·len:·1300,·SHA:·6cf36eb1e380c61c570361a0a672634ef6ff48bcc0927857626b6e1af6ca3723·...·]-5">]</span><span·class="gp·unselectable"> |
| 238 | 4>·</span><span·class="nc">cprof</span><span·class="p">:</span><span·class="nf">analyse</span><span·class="p"·data-group-id=" | 238 | 4>·</span><span·class="nc">cprof</span><span·class="p">:</span><span·class="nf">analyse</span><span·class="p"·data-group-id="0355572813-6">(</span><span·class="p"·data-group-id="0355572813-6">)</span><span·class="p">.</span><span·class="w"> |
| 239 | </span><span·class="p"·data-group-id=" | 239 | </span><span·class="p"·data-group-id="0355572813-7">{</span><span·class="mi">13180</span><span·class="p">,</span><span·class="w"> |
| 240 | ·</span><span·class="p"·data-group-id=" | 240 | ·</span><span·class="p"·data-group-id="0355572813-8">[</span><span·class="p"·data-group-id="0355572813-9">{</span><span·class="ss">lists</span><span·class="p">,</span><span·class="mi">6173</span><span·class="p">,</span><span·class="w"> |
| 241 | ·········</span><span·class="p"·data-group-id=" | 241 | ·········</span><span·class="p"·data-group-id="0355572813-10">[</span><span·class="p"·data-group-id="0355572813-11">{</span><span·class="p"·data-group-id="0355572813-12">{</span><span·class="ss">lists</span><span·class="p">,</span><span·class="ss">rmerge3_1</span><span·class="p">,</span><span·class="mi[·...·truncated·by·diffoscope;·len:·157,·SHA:·b59ce9511b4a20c4ec0707952dc3a8ff25d3c8710d12e429732e7b876b68f594·...·]-11">}</span><span·class="p">,</span><span·class="w"> |
| 242 | ··········</span><span·class="p"·data-group-id=" | 242 | ··········</span><span·class="p"·data-group-id="0355572813-13">{</span><span·class="p"·data-group-id="0355572813-14">{</span><span·class="ss">lists</span><span·class="p">,</span><span·class="ss">rmerge3_2</span><span·class="p">,</span><span·class="mi">6</span><span·class="p"·data-group-id="0355572813-14[·...·truncated·by·diffoscope;·len:·102,·SHA:·1f304f306767417ba7cf4d871a50d202db4c3f36d307e8d8cf2391d8536baf92·...·]-13">}</span><span·class="p">,</span><span·class="w"> |
| 243 | ··········</span><span·class="p"·data-group-id=" | 243 | ··········</span><span·class="p"·data-group-id="0355572813-15">{</span><span·class="p"·data-group-id="0355572813-16">{</span><span·class="ss">lists</span><span·class="p">,</span><span·class="ss">split_1</span><span·class="p">,</span><span·class="mi">5</span><span·class="p"·data-group-id="0355572813-16">[·...·truncated·by·diffoscope;·len:·100,·SHA:·e66f150122e34ed12c453e0a1c6efe9e195f30d38e1847008d061b368ace53d9·...·]-15">}</span><span·class="p">,</span><span·class="w"> |
| 244 | ··········</span><span·class="p"·data-group-id=" | 244 | ··········</span><span·class="p"·data-group-id="0355572813-17">{</span><span·class="p"·data-group-id="0355572813-18">{</span><span·class="ss">lists</span><span·class="p">,</span><span·class="ss">merge3_1</span><span·class="p">,</span><span·class="mi">6</span><span·class="p"·data-group-id="0355572813-18"[·...·truncated·by·diffoscope;·len:·101,·SHA:·c90a5f7cfadf8a185a0c20f3e531be0269faf5fbc0541bcdcaeb5c793d7ca509·...·]-17">}</span><span·class="p">,</span><span·class="w"> |
| 245 | ··········</span><span·class="p"·data-group-id=" | 245 | ··········</span><span·class="p"·data-group-id="0355572813-19">{</span><span·class="p"·data-group-id="0355572813-20">{</span><span·class="ss">lists</span><span·class="p">,</span><span·class="ss">merge3_2</span><span·class="p">,</span><span·class="mi">6</span><span·class="p"·data-group-id="0355572813-20"[·...·truncated·by·diffoscope;·len:·101,·SHA:·33e3de563cf62585b6f55c1453ff5d79b56747761e8d0c0bebd6600719f66257·...·]-19">}</span><span·class="p">,</span><span·class="w"> |
| 246 | ··········</span><span·class="p"·data-group-id=" | 246 | ··········</span><span·class="p"·data-group-id="0355572813-21">{</span><span·class="p"·data-group-id="0355572813-22">{</span><span·class="ss">lists</span><span·class="p">,</span><span·class="ss">rmerge3_12_3</span><span·class="p">,</span><span·class="mi">6</span><span·class="p"·data-group-id="0355572813[·...·truncated·by·diffoscope;·len:·105,·SHA:·b1686d2664aaf63113a782a1a12bdfe1305121ca160a1d6f8f9ef9b27184e1cf·...·]-21">}</span><span·class="p">,</span><span·class="w"> |
| 247 | ··········</span><span·class="p"·data-group-id=" | 247 | ··········</span><span·class="p"·data-group-id="0355572813-23">{</span><span·class="p"·data-group-id="0355572813-24">{</span><span·class="ss">lists</span><span·class="p">,</span><span·class="ss">split_1_1</span><span·class="p">,</span><span·class="mi">6</span><span·class="p"·data-group-id="0355572813-24[·...·truncated·by·diffoscope;·len:·102,·SHA:·7a1afff8c55284940d76f6c00873b6e246e89944c225ad63d0660bf282609716·...·]-23">}</span><span·class="p">,</span><span·class="w"> |
| 248 | ··········</span><span·class="p"·data-group-id=" | 248 | ··········</span><span·class="p"·data-group-id="0355572813-25">{</span><span·class="p"·data-group-id="0355572813-26">{</span><span·class="ss">lists</span><span·class="p">,</span><span·class="ss">merge3_12_3</span><span·class="p">,</span><span·class="mi">6</span><span·class="p"·data-group-id="0355572813-[·...·truncated·by·diffoscope;·len:·104,·SHA:·ca41cea535e9c50ff382009e45bde2999af646f7e0fe02af07f61d5f3caf4d77·...·]-25">}</span><span·class="p">,</span><span·class="w"> |
| 249 | ··········</span><span·class="p"·data-group-id=" | 249 | ··········</span><span·class="p"·data-group-id="0355572813-27">{</span><span·class="p"·data-group-id="0355572813-28">{</span><span·class="ss">lists</span><span·class="p">,</span><span·class="ss">rmerge3_21_3</span><span·class="p">,</span><span·class="mi">6</span><span·class="p"·data-group-id="0355572813[·...·truncated·by·diffoscope;·len:·105,·SHA:·71647039f1c3256bd883882c4b47ba7195b23b7b88a2833e77d0be8d960e48c6·...·]-27">}</span><span·class="p">,</span><span·class="w"> |
| 250 | ··········</span><span·class="p"·data-group-id=" | 250 | ··········</span><span·class="p"·data-group-id="0355572813-29">{</span><span·class="p"·data-group-id="0355572813-30">{</span><span·class="ss">lists</span><span·class="p">,</span><span·class="ss">merge3_21_3</span><span·class="p">,</span><span·class="mi">6</span><span·class="p"·data-group-id="0355572813-[·...·truncated·by·diffoscope;·len:·104,·SHA:·067636ac98ec9c9d2527aa3564162d87d84b7322e2677979b7c49a5a0261b345·...·]-29">}</span><span·class="p">,</span><span·class="w"> |
| 251 | ··········</span><span·class="p"·data-group-id=" | 251 | ··········</span><span·class="p"·data-group-id="0355572813-31">{</span><span·class="p"·data-group-id="0355572813-32">{</span><span·class="ss">lists</span><span·class="p">,</span><span·class="ss">merge2_1</span><span·class="p">,</span><span·class="mi">4</span><span·class="p"·data-group-id="0355572813-32"[·...·truncated·by·diffoscope;·len:·101,·SHA:·10e910774fc860172cc82d67a31f50954a4f6c669a312148af30a66dd63b69e7·...·]-31">}</span><span·class="p">,</span><span·class="w"> |
| 252 | ··········</span><span·class="p"·data-group-id=" | 252 | ··········</span><span·class="p"·data-group-id="0355572813-33">{</span><span·class="p"·data-group-id="0355572813-34">{</span><span·class="ss">lists</span><span·class="p">,</span><span·class="ss">merge2_2</span><span·class="p">,</span><span·class="mi">5</span><span·class="p"·data-group-id="0355572813-34"[·...·truncated·by·diffoscope;·len:·101,·SHA:·965889a61a3190e194a393938a9d834d5267e163473ce607b84689f8dff4e1e8·...·]-33">}</span><span·class="p">,</span><span·class="w"> |
| 253 | ··········</span><span·class="p"·data-group-id=" | 253 | ··········</span><span·class="p"·data-group-id="0355572813-35">{</span><span·class="p"·data-group-id="0355572813-36">{</span><span·class="ss">lists</span><span·class="p">,</span><span·class="ss">reverse</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="0355572813-36">[·...·truncated·by·diffoscope;·len:·100,·SHA:·e9b517045d4eaa0858151d0e131cfa72bf36237efe9af35e6e4ff73224c17af1·...·]-35">}</span><span·class="p">,</span><span·class="w"> |
| 254 | ··········</span><span·class="p"·data-group-id=" | 254 | ··········</span><span·class="p"·data-group-id="0355572813-37">{</span><span·class="p"·data-group-id="0355572813-38">{</span><span·class="ss">lists</span><span·class="p">,</span><span·class="ss">rmerge2_2</span><span·class="p">,</span><span·class="mi">5</span><span·class="p"·data-group-id="0355572813-38[·...·truncated·by·diffoscope;·len:·101,·SHA:·2a3e7bb848d5bac0864e51aac462e7bc034c59c46a16a88327477c92432fa9a3·...·]-37">}</span><span·class="p">,</span><span·class="w"> |
| 255 | ··········</span><span·class="p"·data-group-id=" | 255 | ··········</span><span·class="p"·data-group-id="0355572813-39">{</span><span·class="p"·data-group-id="0355572813-40">{</span><span·class="ss">lists</span><span·class="p">,</span><span·class="ss">rmergel</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="0355572813-40">[·...·truncated·by·diffoscope;·len:·99,·SHA:·5a9574ab606680387977d7af10aa58282a2f5ab174a2d3e35c7298558826f9f0·...·]-39">}</span><span·class="p">,</span><span·class="w"> |
| 256 | ··········</span><span·class="p"·data-group-id=" | 256 | ··········</span><span·class="p"·data-group-id="0355572813-41">{</span><span·class="p"·data-group-id="0355572813-42">{</span><span·class="ss">lists</span><span·class="p">,</span><span·class="ss">rmerge2_1</span><span·class="p">,</span><span·class="mi">4</span><span·class="p"·data-group-id="0355572813-42[·...·truncated·by·diffoscope;·len:·101,·SHA:·c9ae6ff8ba920251ec877a58f8721d5f074a816a3d3f80140ddf5b7af2c50785·...·]-41">}</span><span·class="p">,</span><span·class="w"> |
| 257 | ··········</span><span·class="p"·data-group-id=" | 257 | ··········</span><span·class="p"·data-group-id="0355572813-43">{</span><span·class="p"·data-group-id="0355572813-44">{</span><span·class="ss">lists</span><span·class="p">,</span><span·class="ss">mergel</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="0355572813-44">}[·...·truncated·by·diffoscope;·len:·98,·SHA:·57dedc7a0dfc0d6b82933ad3b56e5089d2622e42c8569c25e68d739b3564c4d0·...·]-43">}</span><span·class="p">,</span><span·class="w"> |
| 258 | ··········</span><span·class="p"·data-group-id=" | 258 | ··········</span><span·class="p"·data-group-id="0355572813-45">{</span><span·class="p"·data-group-id="0355572813-46">{</span><span·class="ss">lists</span><span·class="p">,</span><span·class="ss">keyfind</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="0355572813-46">[·...·truncated·by·diffoscope;·len:·98,·SHA:·bb21905debcfacb214522f7de0312d9677c6f6285b8a551acb63f8e202a2b996·...·]-45">}</span><span·class="p">,</span><span·class="w"> |
| 259 | ··········</span><span·class="p"·data-group-id=" | 259 | ··········</span><span·class="p"·data-group-id="0355572813-47">{</span><span·class="p"·data-group-id="0355572813-48">{</span><span·class="ss">lists</span><span·class="p">,</span><span·class="ss">sort</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="0355572813-48">}</[·...·truncated·by·diffoscope;·len:·203,·SHA:·459b8e2da81dca64719dafbec38dcd493252f5604709bf9ca273c74ae3200bc1·...·]-9">}</span><span·class="p">,</span><span·class="w"> |
| 260 | ··</span><span·class="p"·data-group-id=" | 260 | ··</span><span·class="p"·data-group-id="0355572813-49">{</span><span·class="ss">rand</span><span·class="p">,</span><span·class="mi">5000</span><span·class="p">,</span><span·class="w"> |
| 261 | ········</span><span·class="p"·data-group-id=" | 261 | ········</span><span·class="p"·data-group-id="0355572813-50">[</span><span·class="p"·data-group-id="0355572813-51">{</span><span·class="p"·data-group-id="0355572813-52">{</span><span·class="ss">rand</span><span·class="p">,</span><span·class="ss">uniform_s</span><span·class="p">,</span><span·class="mi"[·...·truncated·by·diffoscope;·len:·156,·SHA:·f91d137b80f859ab75cbaff95089df39781167e3d0ce79dbd244378aafb1d828·...·]-51">}</span><span·class="p">,</span><span·class="w"> |
| 262 | ·········</span><span·class="p"·data-group-id=" | 262 | ·········</span><span·class="p"·data-group-id="0355572813-53">{</span><span·class="p"·data-group-id="0355572813-54">{</span><span·class="ss">rand</span><span·class="p">,</span><span·class="ss">uniform</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="0355572813-54">}[·...·truncated·by·diffoscope;·len:·100,·SHA:·f7563c8e47a97a27327d1f4da45b65c297627e9ebba8a2758f656f7cb5f9e0f5·...·]-53">}</span><span·class="p">,</span><span·class="w"> |
| 263 | ·········</span><span·class="p"·data-group-id=" | 263 | ·········</span><span·class="p"·data-group-id="0355572813-55">{</span><span·class="p"·data-group-id="0355572813-56">{</span><span·class="ss">rand</span><span·class="p">,</span><span·class="ss">seed_put</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="0355572813-56">[·...·truncated·by·diffoscope;·len:·101,·SHA:·ae36a0b370f5973f04e1865568be575c3160fec0e2fadfe9ddea373111243561·...·]-55">}</span><span·class="p">,</span><span·class="w"> |
| 264 | ·········</span><span·class="p"·data-group-id=" | 264 | ·········</span><span·class="p"·data-group-id="0355572813-57">{</span><span·class="p"·data-group-id="0355572813-58">{</span><span·class="ss">rand</span><span·class="p">,</span><span·class="ss">seed_get</span><span·class="p">,</span><span·class="mi">0</span><span·class="p"·data-group-id="0355572813-58">[·...·truncated·by·diffoscope;·len:·101,·SHA:·ae36a0b370f5973f04e1865568be575c3160fec0e2fadfe9ddea373111243561·...·]-57">}</span><span·class="p">,</span><span·class="w"> |
| 265 | ·········</span><span·class="p"·data-group-id=" | 265 | ·········</span><span·class="p"·data-group-id="0355572813-59">{</span><span·class="p"·data-group-id="0355572813-60">{</span><span·class="ss">rand</span><span·class="p">,</span><span·class="ss">exsss_uniform</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="0355572813[·...·truncated·by·diffoscope;·len:·214,·SHA:·9b4d499c1f05a96e3b44752da6703752ea91aa3cf00a9c0d7a950020c2cf552f·...·]-49">}</span><span·class="p">,</span><span·class="w"> |
| 266 | ··</span><span·class="p"·data-group-id=" | 266 | ··</span><span·class="p"·data-group-id="0355572813-61">{</span><span·class="ss">erlang</span><span·class="p">,</span><span·class="mi">1004</span><span·class="p">,</span><span·class="w"> |
| 267 | ··········</span><span·class="p"·data-group-id=" | 267 | ··········</span><span·class="p"·data-group-id="0355572813-62">[</span><span·class="p"·data-group-id="0355572813-63">{</span><span·class="p"·data-group-id="0355572813-64">{</span><span·class="ss">erlang</span><span·class="p">,</span><span·class="nb">put</span><span·class="p">,</span><span·class="mi">2</[·...·truncated·by·diffoscope;·len:·152,·SHA:·55d1f918612bc1ef79559a4e0df87978733dccbf61bac721821b5bdf03d6887b·...·]-63">}</span><span·class="p">,</span><span·class="w"> |
| 268 | ···········</span><span·class="p"·data-group-id=" | 268 | ···········</span><span·class="p"·data-group-id="0355572813-65">{</span><span·class="p"·data-group-id="0355572813-66">{</span><span·class="ss">erlang</span><span·class="p">,</span><span·class="nb">trace_pattern</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="03555728[·...·truncated·by·diffoscope;·len:·105,·SHA:·933fdfc857fabaeab30bf5c5c3d206258ebf299ce94bfe1f88e2a5f7c145875e·...·]-65">}</span><span·class="p">,</span><span·class="w"> |
| 269 | ···········</span><span·class="p"·data-group-id=" | 269 | ···········</span><span·class="p"·data-group-id="0355572813-67">{</span><span·class="p"·data-group-id="0355572813-68">{</span><span·class="ss">erlang</span><span·class="p">,</span><span·class="ss">ensure_tracer_module_loaded</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·227,·SHA:·48a89019b8e53f0408c5ec760ed411338e16287da964532e1bb3db1a40292b49·...·]-61">}</span><span·class="p">,</span><span·class="w"> |
| 270 | ··</span><span·class="p"·data-group-id=" | 270 | ··</span><span·class="p"·data-group-id="0355572813-69">{</span><span·class="ss">sort</span><span·class="p">,</span><span·class="mi">1001</span><span·class="p">,</span><span·class="p"·data-group-id="0355572813-70">[</span><span·class="p"·data-group-id="0355572813-71">{</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·415,·SHA:·74be7e3bddfdfaa1a2d9ed0a038d153c002643a37ed847c7510fb55994676d9b·...·]-69">}</span><span·class="p">,</span><span·class="w"> |
| 271 | ··</span><span·class="p"·data-group-id=" | 271 | ··</span><span·class="p"·data-group-id="0355572813-73">{</span><span·class="ss">erts_internal</span><span·class="p">,</span><span·class="mi">2</span><span·class="p">,</span><span·class="p"·data-group-id="0355572813-74">[</span><span·class="p"·data-group-id="0355572813-75">{</span><span·class="p"[·...·truncated·by·diffoscope;·len:·545,·SHA:·265442512eb96cbb7385881e010356cdbe0264309bd2ed280d6e8bc4206eb47c·...·]-7">}</span><span·class="gp·unselectable"> |
| 272 | 5>·</span><span·class="nc">cprof</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id=" | 272 | 5>·</span><span·class="nc">cprof</span><span·class="p">:</span><span·class="nf">stop</span><span·class="p"·data-group-id="0355572813-77">(</span><span·class="p"·data-group-id="0355572813-77">)</span><span·class="p">.</span><span·class="w"> |
| 273 | </span><span·class="mi">12625</span></code></pre><p>The·example·shows·some·details·of·how·<a·href="../../../../lib/stdlib-6.2.1/doc/html/lists.html#sort/1"><code·class="inline">lists:sort/1</code></a>·works.·It·used·6173 | 273 | </span><span·class="mi">12625</span></code></pre><p>The·example·shows·some·details·of·how·<a·href="../../../../lib/stdlib-6.2.1/doc/html/lists.html#sort/1"><code·class="inline">lists:sort/1</code></a>·works.·It·used·6173 |
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| 207 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 207 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 208 | ··</a> | 208 | ··</a> |
| 209 | ··<span·class="text">Edit·-·Alignment</span> | 209 | ··<span·class="text">Edit·-·Alignment</span> |
| 210 | </h2> | 210 | </h2> |
| 211 | <ul><li>··<em><code·class="inline">C-c·C-a</code></em>·(<code·class="inline">align-current</code>)·-·aligns·comments,·arrows,·assignments, | 211 | <ul><li>··<em><code·class="inline">C-c·C-a</code></em>·(<code·class="inline">align-current</code>)·-·aligns·comments,·arrows,·assignments, |
| 212 | and·type·annotations·around·the·cursor.</li></ul><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Example</span><span·class="p">:</span><span·class="w"> | 212 | and·type·annotations·around·the·cursor.</li></ul><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Example</span><span·class="p">:</span><span·class="w"> |
| 213 | </span><span·class="nf">sum</span><span·class="p"·data-group-id=" | 213 | </span><span·class="nf">sum</span><span·class="p"·data-group-id="8038312027-1">(</span><span·class="n">L</span><span·class="p"·data-group-id="8038312027-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">sum</span><span·class="p"·data-group-id="8038312027-2">(</span><[·...·truncated·by·diffoscope;·len:·137,·SHA:·76f6173a329c7cf1d432372a07386275d63a71263ff9936391ab196c89729a47·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 214 | </span><span·class="nf">sum</span><span·class="p"·data-group-id=" | 214 | </span><span·class="nf">sum</span><span·class="p"·data-group-id="8038312027-3">(</span><span·class="p"·data-group-id="8038312027-4">[</span><span·class="n">H</span><span·class="p">|</span><span·class="n">T</span><span·class="p"·data-group-id="8038312027-4">]</span><span·class="p">,</span><span·class="w">·</span><span·cl[·...·truncated·by·diffoscope;·len:·462,·SHA:·612c15241aeb5ec8d6d5c5cb7e36120dc9b108f2ed216552bc260c70564b875b·...·]-5">)</span><span·class="p">;</span><span·class="w">··</span><span·class="c1">%·recurse</span><span·class="w"> |
| 215 | </span><span·class="nf">sum</span><span·class="p"·data-group-id=" | 215 | </span><span·class="nf">sum</span><span·class="p"·data-group-id="8038312027-6">(</span><span·class="p"·data-group-id="8038312027-7">[</span><span·class="p"·data-group-id="8038312027-7">]</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Sum</span><span·class="p"·data-group-id="8038312027-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Sum</span><span·class="p">.</span><span·class="w">···</span><span·class="c1">%·base·case</span><span·class="w"> |
| 216 | </span><span·class="w"> | 216 | </span><span·class="w"> |
| 217 | </span><span·class="p">-</span><span·class="na">record</span><span·class="w">·</span><span·class="p"·data-group-id=" | 217 | </span><span·class="p">-</span><span·class="na">record</span><span·class="w">·</span><span·class="p"·data-group-id="8038312027-8">{</span><span·class="w">·</span><span·class="ss">two</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">int</span><span·class="p"·data-group-id="8038312027-9">(</span><span·c[·...·truncated·by·diffoscope;·len:·34,·SHA:·179c0e6cbcca03dead013f01faad3c14c2e992ab1d7dbfb54d908865a4ad6912·...·]-9">)</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%·hello</span><span·class="w"> |
| 218 | ··········</span><span·class="ss">three</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">hello</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">string</span><span·class="p"·data-group-id=" | 218 | ··········</span><span·class="ss">three</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">hello</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">string</span><span·class="p"·data-group-id="8038312027-10">(</span><span·class="p"·data-group-id="8038312027-10">)</span><span·class="p">,</span><span·class="w">····</span><span·class="c1">%·there</span><span·class="w"> |
| 219 | ··········</span><span·class="ss">four</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">42</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">int</span><span·class="p"·data-group-id=" | 219 | ··········</span><span·class="ss">four</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">42</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">int</span><span·class="p"·data-group-id="8038312027-11">(</span><span·class="p"·data-group-id="8038312027-11">)</span><span·class="w">·</span><span·class="p"·data-group-id="8038312027-8">}</span><span·class="p">.</span><span·class="w"> |
| 220 | </span><span·class="nc">becomes</span><span·class="p">:</span><span·class="w"> | 220 | </span><span·class="nc">becomes</span><span·class="p">:</span><span·class="w"> |
| 221 | </span><span·class="nf">sum</span><span·class="p"·data-group-id=" | 221 | </span><span·class="nf">sum</span><span·class="p"·data-group-id="8038312027-12">(</span><span·class="n">L</span><span·class="p"·data-group-id="8038312027-12">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nf">sum</span><span·class="p"·data-group-id="8038312027-13">(</spa[·...·truncated·by·diffoscope;·len:·140,·SHA:·6a54dd12c18e59e933acb0f928e5f6c2c670f8f16c32cf692846383b4f304074·...·]-13">)</span><span·class="p">.</span><span·class="w"> |
| 222 | </span><span·class="nf">sum</span><span·class="p"·data-group-id=" | 222 | </span><span·class="nf">sum</span><span·class="p"·data-group-id="8038312027-14">(</span><span·class="p"·data-group-id="8038312027-15">[</span><span·class="n">H</span><span·class="p">|</span><span·class="n">T</span><span·class="p"·data-group-id="8038312027-15">]</span><span·class="p">,</span><span·class="w">·</span><span[·...·truncated·by·diffoscope;·len:·467,·SHA:·cfc4ead4bce7d88de637f29835cce66aa7ae6b09af825379969a192f19713c3b·...·]-16">)</span><span·class="p">;</span><span·class="w">·</span><span·class="c1">%·recurse</span><span·class="w"> |
| 223 | </span><span·class="nf">sum</span><span·class="p"·data-group-id=" | 223 | </span><span·class="nf">sum</span><span·class="p"·data-group-id="8038312027-17">(</span><span·class="p"·data-group-id="8038312027-18">[</span><span·class="p"·data-group-id="8038312027-18">]</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Sum</span><span·class="p"·data-group-id="8038312027-17">)</span><span·class="w">····</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Sum</span><span·class="p">.</span><span·class="w">·············</span><span·class="c1">%·base·case</span><span·class="w"> |
| 224 | </span><span·class="w"> | 224 | </span><span·class="w"> |
| 225 | </span><span·class="p">-</span><span·class="na">record</span><span·class="w">·</span><span·class="p"·data-group-id=" | 225 | </span><span·class="p">-</span><span·class="na">record</span><span·class="w">·</span><span·class="p"·data-group-id="8038312027-19">{</span><span·class="w">·</span><span·class="ss">two</span><span·class="w">···········</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">int</span><span·class="p"·data-group-id="8038312027-20">(</[·...·truncated·by·diffoscope;·len:·46,·SHA:·a7df3ae93c4bd2cb030b4eec779ee575227a7f25b030222ef1c0f9d2b58dec93·...·]-20">)</span><span·class="p">,</span><span·class="w">····</span><span·class="c1">%·hello</span><span·class="w"> |
| 226 | ··········</span><span·class="ss">three</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">hello</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">string</span><span·class="p"·data-group-id=" | 226 | ··········</span><span·class="ss">three</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">hello</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">string</span><span·class="p"·data-group-id="8038312027-21">(</span><span·class="p"·data-group-id="8038312027-21">)</span><span·class="p">,</span><span·class="w">·</span><span·class="c1">%·there</span><span·class="w"> |
| 227 | ··········</span><span·class="ss">four</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">42</span><span·class="w">····</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">int</span><span·class="p"·data-group-id=" | 227 | ··········</span><span·class="ss">four</span><span·class="w">··</span><span·class="o">=</span><span·class="w">·</span><span·class="mi">42</span><span·class="w">····</span><span·class="p">:</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">int</span><span·class="p"·data-group-id="8038312027-22">(</span><span·class="p"·data-group-id="8038312027-22">)</span><span·class="w">·</span><span·class="p"·data-group-id="8038312027-19">}</span><span·class="p">.</span></code></pre><h2·id="syntax-highlighting"·class="section-heading"> |
| 228 | ··<a·href="#syntax-highlighting"·class="hover-link"> | 228 | ··<a·href="#syntax-highlighting"·class="hover-link"> |
| 229 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 229 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 230 | ··</a> | 230 | ··</a> |
| 231 | ··<span·class="text">Syntax·highlighting</span> | 231 | ··<span·class="text">Syntax·highlighting</span> |
| 232 | </h2> | 232 | </h2> |
| 233 | <p>The·syntax·highlighting·can·be·activated·from·the·Erlang·menu.·There·are·four | 233 | <p>The·syntax·highlighting·can·be·activated·from·the·Erlang·menu.·There·are·four |
| 234 | different·alternatives:</p><ul><li>··Off:·Normal·black·and·white·display.</li><li>··Level·1:·Function·headers,·reserved·words,·comments,·strings,·quoted·atoms, | 234 | different·alternatives:</p><ul><li>··Off:·Normal·black·and·white·display.</li><li>··Level·1:·Function·headers,·reserved·words,·comments,·strings,·quoted·atoms, |
| Offset 171, 69 lines modified | Offset 171, 69 lines modified | ||
| 171 | </h2> | 171 | </h2> |
| 172 | <p>This·section·describes·the·output·format·of·the·<a·href="#analyse/1"><code·class="inline">analyse/1</code></a>·function.</p><p>The·format·is·parsable·with·the·standard·Erlang·parsing·tools | 172 | <p>This·section·describes·the·output·format·of·the·<a·href="#analyse/1"><code·class="inline">analyse/1</code></a>·function.</p><p>The·format·is·parsable·with·the·standard·Erlang·parsing·tools |
| 173 | <a·href="../../../../lib/stdlib-6.2.1/doc/html/erl_scan.html"><code·class="inline">erl_scan</code></a>·and·<a·href="../../../../lib/stdlib-6.2.1/doc/html/erl_parse.html"><code·class="inline">erl_parse</code></a>,·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#consult/1"><code·class="inline">file:consult/1</code></a>,·or·<a·href="../../../../lib/stdlib-6.2.1/doc/html/io.html#read/2"><code·class="inline">io:read/2</code></a>.·The | 173 | <a·href="../../../../lib/stdlib-6.2.1/doc/html/erl_scan.html"><code·class="inline">erl_scan</code></a>·and·<a·href="../../../../lib/stdlib-6.2.1/doc/html/erl_parse.html"><code·class="inline">erl_parse</code></a>,·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#consult/1"><code·class="inline">file:consult/1</code></a>,·or·<a·href="../../../../lib/stdlib-6.2.1/doc/html/io.html#read/2"><code·class="inline">io:read/2</code></a>.·The |
| 174 | parse·format·is·not·described·here·—·it·should·be·easy·enough·for·the | 174 | parse·format·is·not·described·here·—·it·should·be·easy·enough·for·the |
| 175 | interested·reader·to·try·it·out.·Note·that·some·flags·to | 175 | interested·reader·to·try·it·out.·Note·that·some·flags·to |
| 176 | <a·href="#analyse/1"><code·class="inline">analyse/1</code></a>·will·affect·the·format.</p><p>The·following·example·was·run·on·Erlang/OTP·R8·on·Solaris·8;·all·OTP | 176 | <a·href="#analyse/1"><code·class="inline">analyse/1</code></a>·will·affect·the·format.</p><p>The·following·example·was·run·on·Erlang/OTP·R8·on·Solaris·8;·all·OTP |
| 177 | internals·in·this·example·are·version·dependent.</p><p>As·an·example,·we·will·use·the·following·function,·which·is·a | 177 | internals·in·this·example·are·version·dependent.</p><p>As·an·example,·we·will·use·the·following·function,·which·is·a |
| 178 | slightly·modified·benchmark·function·from·module·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html"><code·class="inline">file</code></a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 178 | slightly·modified·benchmark·function·from·module·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html"><code·class="inline">file</code></a>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="9051771355-1">(</span><span·class="ss">foo</span><span·class="p"·data-group-id="9051771355-1">)</span><span·class="p">.</span><span·class="w"> |
| 179 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 179 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="9051771355-2">(</span><span·class="p"·data-group-id="9051771355-3">[</span><span·class="ss">create_file_slow</span><span·class="p">/</span><span·class="mi">2</span><span·class="p"·data-group-id="9051771355-3">]</span><span·class="p"·data-group-id="90517713[·...·truncated·by·diffoscope;·len:·2,·SHA:·02d20bbd7e394ad5999a4cebabac9619732c343a4cac99470c03e23ba2bdc2bc·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 180 | </span><span·class="nf">create_file_slow</span><span·class="p"·data-group-id=" | 180 | </span><span·class="nf">create_file_slow</span><span·class="p"·data-group-id="9051771355-4">(</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="n">N</span><span·class="p"·data-group-id="9051771355-4">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·c[·...·truncated·by·diffoscope;·len:·145,·SHA:·344e91e58ff59aab1a9b929d0e95698a748103c2b9d97dc1e56643da71966f1a·...·]-5">)</span><span·class="p">,</span><span·class="w">·</span><span·class="n">N</span><span·class="w">·</span><span·class="o">>=</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 181 | ····</span><span·class="p"·data-group-id=" | 181 | ····</span><span·class="p"·data-group-id="9051771355-6">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">FD</span><span·class="p"·data-group-id="9051771355-6">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 182 | ········</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">open</span><span·class="p"·data-group-id=" | 182 | ········</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">open</span><span·class="p"·data-group-id="9051771355-7">(</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9051771355-8">[</span><span·class="ss">raw</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">write</span><s[·...·truncated·by·diffoscope;·len:·255,·SHA:·34d4d0eb6e94faa58942676883b829e3e7ac7cbfbb4fae281084d2abff9abf8e·...·]-7">)</span><span·class="p">,</span><span·class="w"> |
| 183 | ····</span><span·class="k">if</span><span·class="w">·</span><span·class="n">N</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="mi">256</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 183 | ····</span><span·class="k">if</span><span·class="w">·</span><span·class="n">N</span><span·class="w">·</span><span·class="o">></span><span·class="w">·</span><span·class="mi">256</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 184 | ············</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id=" | 184 | ············</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id="9051771355-9">(</span><span·class="n">FD</span><span·class="p">,</span><span·class="w"> |
| 185 | ····························</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">map</span><span·class="p"·data-group-id=" | 185 | ····························</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">map</span><span·class="p"·data-group-id="9051771355-10">(</span><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="9051771355-11">(</span><span·class="n">X</span><span·class="p"·data-group-id="9051771355-11">)</span><span·class="w">·</span><span·class="p">-></spa[·...·truncated·by·diffoscope;·len:·258,·SHA:·90fef643c243cc14480806e9088eab460c202fa6754ffb66dccc6c339dc31c23·...·]-12">>></span><span·class="w">·</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 186 | ····························</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">seq</span><span·class="p"·data-group-id=" | 186 | ····························</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">seq</span><span·class="p"·data-group-id="9051771355-13">(</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">255</span><span·class="p"·data-group-id="9051771355-13">)</span><span·class="p"·data-group-id="9051771355-10">)</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·16,·SHA:·eb7d905b863b6f2d438dc06fafa4dc80b6b7e1e77a5636b3dc0a48200e7e3ec9·...·]-9">)</span><span·class="p">,</span><span·class="w"> |
| 187 | ············</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">create_file_slow</span><span·class="p"·data-group-id=" | 187 | ············</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">create_file_slow</span><span·class="p"·data-group-id="9051771355-14">(</span><span·class="n">FD</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">256</span><span·class="p">,</span><span·class="w">·</span><span·class="n">N</span><span·class="p"·data-group-id="9051771355-14">)</span><span·class="p">;</span><span·class="w"> |
| 188 | ·······</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 188 | ·······</span><span·class="ss">true</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 189 | ············</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">create_file_slow</span><span·class="p"·data-group-id=" | 189 | ············</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">create_file_slow</span><span·class="p"·data-group-id="9051771355-15">(</span><span·class="n">FD</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="n">N</span><span·class="p"·data-group-id="9051771355-15">)</span><span·class="w"> |
| 190 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 190 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 191 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id=" | 191 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">close</span><span·class="p"·data-group-id="9051771355-16">(</span><span·class="n">FD</span><span·class="p"·data-group-id="9051771355-16">)</span><span·class="p">.</span><span·class="w"> |
| 192 | </span><span·class="nf">create_file_slow</span><span·class="p"·data-group-id=" | 192 | </span><span·class="nf">create_file_slow</span><span·class="p"·data-group-id="9051771355-17">(</span><span·class="n">FD</span><span·class="p">,</span><span·class="w">·</span><span·class="n">M</span><span·class="p">,</span><span·class="w">·</span><span·class="n">M</span><span·class="p"·data-group-id="9051771355-17">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 193 | ····</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> | 193 | ····</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> |
| 194 | </span><span·class="nf">create_file_slow</span><span·class="p"·data-group-id=" | 194 | </span><span·class="nf">create_file_slow</span><span·class="p"·data-group-id="9051771355-18">(</span><span·class="n">FD</span><span·class="p">,</span><span·class="w">·</span><span·class="n">M</span><span·class="p">,</span><span·class="w">·</span><span·class="n">N</span><span·class="p"·data-group-id="9051771355-18">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 195 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id=" | 195 | ····</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">file</span><span·class="p">:</span><span·class="nf">write</span><span·class="p"·data-group-id="9051771355-19">(</span><span·class="n">FD</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9051771355-20"><<</span><span·class="n">M</span><span·class="p">:</span><span·class="mi">32</span><span·class="o">/</span><[·...·truncated·by·diffoscope;·len:·133,·SHA:·ab61d535b1849a21a04bd55b0d46a498696acc846aeb9452d3e170abfde67215·...·]-19">)</span><span·class="p">,</span><span·class="w"> |
| 196 | ····</span><span·class="nf">create_file_slow</span><span·class="p"·data-group-id=" | 196 | ····</span><span·class="nf">create_file_slow</span><span·class="p"·data-group-id="9051771355-21">(</span><span·class="n">FD</span><span·class="p">,</span><span·class="w">·</span><span·class="n">M</span><span·class="o">+</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">N</span><span·class="p"[·...·truncated·by·diffoscope;·len:·772,·SHA:·2899fbbeb79d477a3df30a84ed6ab1229bb6175b546d2e5313a124153adac2c3·...·]-1">)</span><span·class="p">.</span><span·class="gp·unselectable"> |
| 197 | 2>·</span><span·class="nc">fprof</span><span·class="p">:</span><span·class="nf">profile</span><span·class="p"·data-group-id=" | 197 | 2>·</span><span·class="nc">fprof</span><span·class="p">:</span><span·class="nf">profile</span><span·class="p"·data-group-id="2484812892-3">(</span><span·class="p"·data-group-id="2484812892-3">)</span><span·class="p">.</span><span·class="gp·unselectable"> |
| 198 | 3>·</span><span·class="nc">fprof</span><span·class="p">:</span><span·class="nf">analyse</span><span·class="p"·data-group-id=" | 198 | 3>·</span><span·class="nc">fprof</span><span·class="p">:</span><span·class="nf">analyse</span><span·class="p"·data-group-id="2484812892-4">(</span><span·class="p"·data-group-id="2484812892-4">)</span><span·class="p">.</span></code></pre><p>The·printout·starts·with:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·Analysis·results:</span><span·class="w"> |
| 199 | </span><span·class="p"·data-group-id=" | 199 | </span><span·class="p"·data-group-id="1845020978-1">{</span><span·class="w">··</span><span·class="ss">analysis_options</span><span·class="p">,</span><span·class="w"> |
| 200 | ·</span><span·class="p"·data-group-id=" | 200 | ·</span><span·class="p"·data-group-id="1845020978-2">[</span><span·class="p"·data-group-id="1845020978-3">{</span><span·class="ss">callers</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">true</span><span·class="p"·data-group-id="1845020978-3">}</span><span·class="p">,</span><span·class="w"> |
| 201 | ··</span><span·class="p"·data-group-id=" | 201 | ··</span><span·class="p"·data-group-id="1845020978-4">{</span><span·class="ss">sort</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">acc</span><span·class="p"·data-group-id="1845020978-4">}</span><span·class="p">,</span><span·class="w"> |
| 202 | ··</span><span·class="p"·data-group-id=" | 202 | ··</span><span·class="p"·data-group-id="1845020978-5">{</span><span·class="ss">totals</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">false</span><span·class="p"·data-group-id="1845020978-5">}</span><span·class="p">,</span><span·class="w"> |
| 203 | ··</span><span·class="p"·data-group-id=" | 203 | ··</span><span·class="p"·data-group-id="1845020978-6">{</span><span·class="ss">details</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">true</span><span·class="p"·data-group-id="1845020978-6">}</span><span·class="p"·data-group-id="1845020978-2">]</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·20,·SHA:·13a658e44291abb8540903d6fa05b771c013f1ac61d4b001a3d091cd8285d2c4·...·]-1">}</span><span·class="p">.</span><span·class="w"> |
| 204 | </span><span·class="c1">%·······································CNT·······ACC·······OWN</span><span·class="w"> | 204 | </span><span·class="c1">%·······································CNT·······ACC·······OWN</span><span·class="w"> |
| 205 | </span><span·class="p"·data-group-id=" | 205 | </span><span·class="p"·data-group-id="1845020978-7">[</span><span·class="p"·data-group-id="1845020978-8">{</span><span·class="w">·</span><span·class="ss">totals</span><span·class="p">,</span><span·class="w">·····························</span><span·class="mi">9627</span><span·class="p">,</span[·...·truncated·by·diffoscope;·len:·231,·SHA:·c147e4f8e8c633d1f1f8adc6f8fc888a9fe8cccf1218d40e7a437844b8dbac05·...·]-7">]</span><span·class="p">.</span><span·class="w">··</span><span·class="c1">%%%</span></code></pre><p>The·<code·class="inline">CNT</code>·column·shows·the·total·number·of·function·calls·that·was·found·in·the |
| 206 | trace.·In·the·<code·class="inline">ACC</code>·column·is·the·total·time·of·the·trace·from·first·timestamp·to | 206 | trace.·In·the·<code·class="inline">ACC</code>·column·is·the·total·time·of·the·trace·from·first·timestamp·to |
| 207 | last.·And·in·the·<code·class="inline">OWN</code>·column·is·the·sum·of·the·execution·time·in·functions·found | 207 | last.·And·in·the·<code·class="inline">OWN</code>·column·is·the·sum·of·the·execution·time·in·functions·found |
| 208 | in·the·trace,·not·including·called·functions.·In·this·case·it·is·very·close·to | 208 | in·the·trace,·not·including·called·functions.·In·this·case·it·is·very·close·to |
| 209 | the·<code·class="inline">ACC</code>·time·since·the·emulator·had·practically·nothing·to·do·except | 209 | the·<code·class="inline">ACC</code>·time·since·the·emulator·had·practically·nothing·to·do·except |
| 210 | executing·our·test·program.</p><p>All·time·values·in·the·printout·are·in·milliseconds.</p><p>The·printout·continues:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·······································CNT·······ACC·······OWN</span><span·class="w"> | 210 | executing·our·test·program.</p><p>All·time·values·in·the·printout·are·in·milliseconds.</p><p>The·printout·continues:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%·······································CNT·······ACC·······OWN</span><span·class="w"> |
| 211 | </span><span·class="p"·data-group-id=" | 211 | </span><span·class="p"·data-group-id="6383639326-1">[</span><span·class="p"·data-group-id="6383639326-2">{</span><span·class="w">·</span><span·class="s">"<0.28.0>"</span><span·class="p">,</span><span·class="w">·························</span><span·class="mi">9627</span><span·cl[·...·truncated·by·diffoscope;·len:·223,·SHA:·a1570c0c6f72df1f222a267cc807eae45e5c0e8c4795d2dd68a78238dedac198·...·]-1">]</span><span·class="p">.</span><span·class="w">···</span><span·class="c1">%%</span></code></pre><p>This·is·the·printout·header·of·one·process.·The·printout·contains·only·this·one |
| 212 | process·since·we·called·<a·href="#apply/3"><code·class="inline">fprof:apply/3</code></a>·that·traces·only·the·current·process. | 212 | process·since·we·called·<a·href="#apply/3"><code·class="inline">fprof:apply/3</code></a>·that·traces·only·the·current·process. |
| 213 | Therefore·the·<code·class="inline">CNT</code>·and·<code·class="inline">OWN</code>·columns·perfectly·matches·the·totals·above.·The·<code·class="inline">ACC</code> | 213 | Therefore·the·<code·class="inline">CNT</code>·and·<code·class="inline">OWN</code>·columns·perfectly·matches·the·totals·above.·The·<code·class="inline">ACC</code> |
| 214 | column·is·undefined·since·summing·the·<code·class="inline">ACC</code>·times·of·all·calls·in·the·process | 214 | column·is·undefined·since·summing·the·<code·class="inline">ACC</code>·times·of·all·calls·in·the·process |
| 215 | makes·no·sense·—·one·would·get·something·like·the·<code·class="inline">ACC</code>·value·from·totals·above | 215 | makes·no·sense·—·one·would·get·something·like·the·<code·class="inline">ACC</code>·value·from·totals·above |
| 216 | multiplied·by·the·average·depth·of·the·call·stack.</p><p>All·paragraphs·up·to·the·next·process·header·only·concerns·function·calls·within | 216 | multiplied·by·the·average·depth·of·the·call·stack.</p><p>All·paragraphs·up·to·the·next·process·header·only·concerns·function·calls·within |
| 217 | this·process.</p><p>Now·we·come·to·something·more·interesting:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="2 | 217 | this·process.</p><p>Now·we·come·to·something·more·interesting:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="2651903550-1">{</span><span·class="p"·data-group-id="2651903550-2">[</span><span·class="p"·data-group-id="2651903550-3">{</span><span·class="ss">undefined</span><span·class="p">,</span><span·class="w">·····························</span><span·class="mi">0</[·...·truncated·by·diffoscope;·len:·259,·SHA:·d3e55fb9d9698849f561c2244c54e5ce190f5b17c5e1e966116688ead94cb2bf·...·]-2">]</span><span·class="p">,</span><span·class="w"> |
| 218 | ·</span><span·class="p"·data-group-id="2 | 218 | ·</span><span·class="p"·data-group-id="2651903550-4">{</span><span·class="w">·</span><span·class="p"·data-group-id="2651903550-5">{</span><span·class="ss">fprof</span><span·class="p">,</span><span·class="ss">apply_start_stop</span><span·class="p">,</span><span·class="mi">4</span><span·class="p"·[·...·truncated·by·diffoscope;·len:·322,·SHA:·1bcbc83a0e602376c08a3f80edf4120a30ef3e42a4a0f675505cad8730e81bfe·...·]-4">}</span><span·class="p">,</span><span·class="w">·····</span><span·class="c1">%</span><span·class="w"> |
| 219 | ·</span><span·class="p"·data-group-id="2 | 219 | ·</span><span·class="p"·data-group-id="2651903550-6">[</span><span·class="p"·data-group-id="2651903550-7">{</span><span·class="p"·data-group-id="2651903550-8">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="ss">create_file_slow</span><span·class="p">,</span><span·class="m[·...·truncated·by·diffoscope;·len:·351,·SHA:·2e64562c6801922275c44dd8b8d84f500c06774d172b7e1c8eb0c66b63f6e865·...·]-7">}</span><span·class="p">,</span><span·class="w"> |
| 220 | ··</span><span·class="p"·data-group-id="2 | 220 | ··</span><span·class="p"·data-group-id="2651903550-9">{</span><span·class="ss">suspend</span><span·class="p">,</span><span·class="w">·······························</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">····</span><span·class="mf">0.000</span><span·class="p">,</sp[·...·truncated·by·diffoscope;·len:·206,·SHA:·996f7757c1c458d501b29ba975b9b4deeb6ce8c0fe33a60a02672f8478ea9ab7·...·]-1">}</span><span·class="p">.</span><span·class="w"> |
| 221 | </span><span·class="p"·data-group-id="2 | 221 | </span><span·class="p"·data-group-id="2651903550-10">{</span><span·class="p"·data-group-id="2651903550-11">[</span><span·class="p"·data-group-id="2651903550-12">{</span><span·class="p"·data-group-id="2651903550-13">{</span><span·class="ss">fprof</span><span·class="p">,</span><span·class="ss">ap[·...·truncated·by·diffoscope;·len:·463,·SHA:·62275a4d997f21421d0758cebc196f5195734e22a69965afa0adc7370b5f7f17·...·]-11">]</span><span·class="p">,</span><span·class="w"> |
| 222 | ·</span><span·class="p"·data-group-id="2 | 222 | ·</span><span·class="p"·data-group-id="2651903550-14">{</span><span·class="w">·</span><span·class="p"·data-group-id="2651903550-15">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="ss">create_file_slow</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·[·...·truncated·by·diffoscope;·len:·325,·SHA:·b7f2262fa42595c9e924a464053399ad149bb4cb9431d4c36861fdc42cf68eb9·...·]-14">}</span><span·class="p">,</span><span·class="w">·····</span><span·class="c1">%</span><span·class="w"> |
| 223 | ·</span><span·class="p"·data-group-id="2 | 223 | ·</span><span·class="p"·data-group-id="2651903550-16">[</span><span·class="p"·data-group-id="2651903550-17">{</span><span·class="p"·data-group-id="2651903550-18">{</span><span·class="ss">file</span><span·class="p">,</span><span·class="ss">close</span><span·class="p">,</span><span·class="mi">1</s[·...·truncated·by·diffoscope;·len:·355,·SHA:·bbdeb82bd1def48c5e3669fe6540cd9e7e7c1cd7a1a049962433cd4e2b45c226·...·]-17">}</span><span·class="p">,</span><span·class="w"> |
| 224 | ··</span><span·class="p"·data-group-id="2 | 224 | ··</span><span·class="p"·data-group-id="2651903550-19">{</span><span·class="p"·data-group-id="2651903550-20">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="ss">create_file_slow</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="265190355[·...·truncated·by·diffoscope;·len:·301,·SHA:·b4d58b0a7c7a7c8abd34a9ba6b54c51813fe13b3cc16e364183bd2d678ee0936·...·]-19">}</span><span·class="p">,</span><span·class="w"> |
| 225 | ··</span><span·class="p"·data-group-id="2 | 225 | ··</span><span·class="p"·data-group-id="2651903550-21">{</span><span·class="p"·data-group-id="2651903550-22">{</span><span·class="ss">file</span><span·class="p">,</span><span·class="ss">open</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="2651903550-22">}</sp[·...·truncated·by·diffoscope;·len:·301,·SHA:·e3ce6492f9cdb65381f0c1b3cad9fa88dd5a1967969bc351dc9c20fb18fdaf9b·...·]-21">}</span><span·class="p">,</span><span·class="w"> |
| 226 | ··</span><span·class="p"·data-group-id="2 | 226 | ··</span><span·class="p"·data-group-id="2651903550-23">{</span><span·class="p"·data-group-id="2651903550-24">{</span><span·class="ss">lists</span><span·class="p">,</span><span·class="ss">map</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="2651903550-24">}</sp[·...·truncated·by·diffoscope;·len:·301,·SHA:·e0813cae3354a9224364cb78edeed9689bc8d4578f8559bfbf9ebb5f0fb32114·...·]-23">}</span><span·class="p">,</span><span·class="w"> |
| 227 | ··</span><span·class="p"·data-group-id="2 | 227 | ··</span><span·class="p"·data-group-id="2651903550-25">{</span><span·class="p"·data-group-id="2651903550-26">{</span><span·class="ss">lists</span><span·class="p">,</span><span·class="ss">seq</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="2651903550-26">}</sp[·...·truncated·by·diffoscope;·len:·301,·SHA:·3b32e359a5be83900047725e20d7338433823949c0f03824dcb27be346203795·...·]-25">}</span><span·class="p">,</span><span·class="w"> |
| 228 | ··</span><span·class="p"·data-group-id="2 | 228 | ··</span><span·class="p"·data-group-id="2651903550-27">{</span><span·class="p"·data-group-id="2651903550-28">{</span><span·class="ss">file</span><span·class="p">,</span><span·class="ss">write</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="2651903550-28">}</s[·...·truncated·by·diffoscope;·len:·409,·SHA:·ab55812289181553de5df800c2f0671d01069c6661fc656f14dd4438fc14bbe4·...·]-10">}</span><span·class="p">.</span></code></pre><p>The·printout·consists·of·one·paragraph·per·called·function.·The·function |
| 229 | <em>marked</em>·with·<code·class="inline">%</code>·is·the·one·the·paragraph·concerns·—·<code·class="inline">foo:create_file_slow/2</code>. | 229 | <em>marked</em>·with·<code·class="inline">%</code>·is·the·one·the·paragraph·concerns·—·<code·class="inline">foo:create_file_slow/2</code>. |
| 230 | Above·the·marked·function·are·the·<em>calling</em>·functions·—·those·that·has·called | 230 | Above·the·marked·function·are·the·<em>calling</em>·functions·—·those·that·has·called |
| 231 | the·marked,·and·below·are·those·<em>called</em>·by·the·marked·function.</p><p>The·paragraphs·are·per·default·sorted·in·descending·order·of·the·<code·class="inline">ACC</code>·column·for | 231 | the·marked,·and·below·are·those·<em>called</em>·by·the·marked·function.</p><p>The·paragraphs·are·per·default·sorted·in·descending·order·of·the·<code·class="inline">ACC</code>·column·for |
| 232 | the·marked·function.·The·calling·list·and·called·list·within·one·paragraph·are | 232 | the·marked·function.·The·calling·list·and·called·list·within·one·paragraph·are |
| 233 | also·per·default·sorted·in·descending·order·of·their·<code·class="inline">ACC</code>·column.</p><p>The·columns·are:</p><ul><li><code·class="inline">CNT</code>·-·the·number·of·times·the·function·has·been·called</li><li><code·class="inline">ACC</code>·-·the·time·spent·in·the·function·including·called·functions</li><li><code·class="inline">OWN</code>·-·the·time·spent·in·the·function·not·including·called·functions</li></ul><p>The·rows·for·the·<em>calling</em>·functions·contain·statistics·for·the·<em>marked</em> | 233 | also·per·default·sorted·in·descending·order·of·their·<code·class="inline">ACC</code>·column.</p><p>The·columns·are:</p><ul><li><code·class="inline">CNT</code>·-·the·number·of·times·the·function·has·been·called</li><li><code·class="inline">ACC</code>·-·the·time·spent·in·the·function·including·called·functions</li><li><code·class="inline">OWN</code>·-·the·time·spent·in·the·function·not·including·called·functions</li></ul><p>The·rows·for·the·<em>calling</em>·functions·contain·statistics·for·the·<em>marked</em> |
| 234 | function·with·the·constraint·that·only·the·occasions·when·a·call·was·made·from | 234 | function·with·the·constraint·that·only·the·occasions·when·a·call·was·made·from |
| 235 | the·<em>row's</em>·function·to·the·<em>marked</em>·function·are·accounted·for.</p><p>The·row·for·the·<em>marked</em>·function·simply·contains·the·sum·of·all·<em>calling</em>·rows.</p><p>The·rows·for·the·<em>called</em>·functions·contains·statistics·for·the·<em>row's</em>·function | 235 | the·<em>row's</em>·function·to·the·<em>marked</em>·function·are·accounted·for.</p><p>The·row·for·the·<em>marked</em>·function·simply·contains·the·sum·of·all·<em>calling</em>·rows.</p><p>The·rows·for·the·<em>called</em>·functions·contains·statistics·for·the·<em>row's</em>·function |
| Offset 242, 109 lines modified | Offset 242, 109 lines modified | ||
| 242 | execution.·It·spent·most·of·its·time·in·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#close/1"><code·class="inline">file:close/1</code></a>.·The·function | 242 | execution.·It·spent·most·of·its·time·in·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#close/1"><code·class="inline">file:close/1</code></a>.·The·function |
| 243 | <code·class="inline">foo:create_file_slow/3</code>·that·writes·3/4·of·the·file·contents·is·the·second | 243 | <code·class="inline">foo:create_file_slow/3</code>·that·writes·3/4·of·the·file·contents·is·the·second |
| 244 | biggest·time·thief.</p><p>We·also·see·that·the·call·to·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#write/2"><code·class="inline">file:write/2</code></a>·that·writes·1/4·of·the·file·contents | 244 | biggest·time·thief.</p><p>We·also·see·that·the·call·to·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#write/2"><code·class="inline">file:write/2</code></a>·that·writes·1/4·of·the·file·contents |
| 245 | takes·very·little·time·in·itself.·What·takes·time·is·to·build·the·data | 245 | takes·very·little·time·in·itself.·What·takes·time·is·to·build·the·data |
| 246 | (<a·href="../../../../lib/stdlib-6.2.1/doc/html/lists.html#seq/2"><code·class="inline">lists:seq/2</code></a>·and·<a·href="../../../../lib/stdlib-6.2.1/doc/html/lists.html#map/2"><code·class="inline">lists:map/2</code></a>).</p><p>The·function·<code·class="inline">undefined</code>·that·has·called·<code·class="inline">fprof:apply_start_stop/4</code>·is·an | 246 | (<a·href="../../../../lib/stdlib-6.2.1/doc/html/lists.html#seq/2"><code·class="inline">lists:seq/2</code></a>·and·<a·href="../../../../lib/stdlib-6.2.1/doc/html/lists.html#map/2"><code·class="inline">lists:map/2</code></a>).</p><p>The·function·<code·class="inline">undefined</code>·that·has·called·<code·class="inline">fprof:apply_start_stop/4</code>·is·an |
| 247 | unknown·function·because·that·call·was·not·recorded·in·the·trace.·It·was·only | 247 | unknown·function·because·that·call·was·not·recorded·in·the·trace.·It·was·only |
| 248 | recorded·that·the·execution·returned·from·<code·class="inline">fprof:apply_start_stop/4</code>·to·some | 248 | recorded·that·the·execution·returned·from·<code·class="inline">fprof:apply_start_stop/4</code>·to·some |
| 249 | other·function·above·in·the·call·stack,·or·that·the·process·exited·from·there.</p><p>Let·us·continue·down·the·printout·to·find:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 249 | other·function·above·in·the·call·stack,·or·that·the·process·exited·from·there.</p><p>Let·us·continue·down·the·printout·to·find:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8988217727-1">{</span><span·class="p"·data-group-id="8988217727-2">[</span><span·class="p"·data-group-id="8988217727-3">{</span><span·class="p"·data-group-id="8988217727-4">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="ss">create_[·...·truncated·by·diffoscope;·len:·405,·SHA:·726880c47d03963dff3de1aa6431c41e8024a8f0ff8c18e880d64e5aa598a2e7·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 250 | ··</span><span·class="p"·data-group-id=" | 250 | ··</span><span·class="p"·data-group-id="8988217727-5">{</span><span·class="p"·data-group-id="8988217727-6">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="ss">create_file_slow</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="8988217727[·...·truncated·by·diffoscope;·len:·352,·SHA:·3e12416e68f7b5ab48f77356cd7cc53d1f024e62fb5960a69858ba9ce25f3a1b·...·]-2">]</span><span·class="p">,</span><span·class="w"> |
| 251 | ·</span><span·class="p"·data-group-id=" | 251 | ·</span><span·class="p"·data-group-id="8988217727-7">{</span><span·class="w">·</span><span·class="p"·data-group-id="8988217727-8">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="ss">create_file_slow</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·d[·...·truncated·by·diffoscope;·len:·323,·SHA:·324fa4ee92246e312eaf871b7cbbefbafa2b602d552cab38b555e567551bc793·...·]-7">}</span><span·class="p">,</span><span·class="w">·····</span><span·class="c1">%</span><span·class="w"> |
| 252 | ·</span><span·class="p"·data-group-id=" | 252 | ·</span><span·class="p"·data-group-id="8988217727-9">[</span><span·class="p"·data-group-id="8988217727-10">{</span><span·class="p"·data-group-id="8988217727-11">{</span><span·class="ss">file</span><span·class="p">,</span><span·class="ss">write</span><span·class="p">,</span><span·class="mi">2</s[·...·truncated·by·diffoscope;·len:·355,·SHA:·74bc423ffbbbea93c6ceb20ff8ed53365632c490b1effbbd0d349a1797b5fb37·...·]-10">}</span><span·class="p">,</span><span·class="w"> |
| 253 | ··</span><span·class="p"·data-group-id=" | 253 | ··</span><span·class="p"·data-group-id="8988217727-12">{</span><span·class="ss">suspend</span><span·class="p">,</span><span·class="w">······························</span><span·class="mi">57</span><span·class="p">,</span><span·class="w">····</span><span·class="mf">6.041</span><span·class="p">,</[·...·truncated·by·diffoscope;·len:·102,·SHA:·330b69caa93dfcdcec55d049164c1e0f9cc99b7d7ac1a5e2d5115575268a7c17·...·]-12">}</span><span·class="p">,</span><span·class="w"> |
| 254 | ··</span><span·class="p"·data-group-id=" | 254 | ··</span><span·class="p"·data-group-id="8988217727-13">{</span><span·class="p"·data-group-id="8988217727-14">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="ss">create_file_slow</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="89882177[·...·truncated·by·diffoscope;·len:·409,·SHA:·e7ca3751c0ca405632faa893947a7c914a76ab1a063d4905d5ec48c93139b90e·...·]-1">}</span><span·class="p">.</span></code></pre><p>If·you·compare·with·the·code·you·will·see·there·also·that |
| 255 | <code·class="inline">foo:create_file_slow/3</code>·was·called·only·from·<code·class="inline">foo:create_file_slow/2</code>·and | 255 | <code·class="inline">foo:create_file_slow/3</code>·was·called·only·from·<code·class="inline">foo:create_file_slow/2</code>·and |
| 256 | itself,·and·called·only·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#write/2"><code·class="inline">file:write/2</code></a>,·note·the·number·of·calls·to | 256 | itself,·and·called·only·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#write/2"><code·class="inline">file:write/2</code></a>,·note·the·number·of·calls·to |
| 257 | <a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#write/2"><code·class="inline">file:write/2</code></a>.·But·here·we·see·that·<code·class="inline">suspend</code>·was·called·a·few·times.·This·is·a | 257 | <a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#write/2"><code·class="inline">file:write/2</code></a>.·But·here·we·see·that·<code·class="inline">suspend</code>·was·called·a·few·times.·This·is·a |
| 258 | pseudo·function·that·indicates·that·the·process·was·suspended·while·executing·in | 258 | pseudo·function·that·indicates·that·the·process·was·suspended·while·executing·in |
| 259 | <code·class="inline">foo:create_file_slow/3</code>,·and·since·there·is·no·<code·class="inline">receive</code>·or·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#yield/0"><code·class="inline">erlang:yield/0</code></a>·in | 259 | <code·class="inline">foo:create_file_slow/3</code>,·and·since·there·is·no·<code·class="inline">receive</code>·or·<a·href="../../../../erts-15.2.3/doc/html/erlang.html#yield/0"><code·class="inline">erlang:yield/0</code></a>·in |
| 260 | the·code,·it·must·be·Erlang·scheduling·suspensions,·or·the·trace·file·driver | 260 | the·code,·it·must·be·Erlang·scheduling·suspensions,·or·the·trace·file·driver |
| 261 | compensating·for·large·file·write·operations·(these·are·regarded·as·a·schedule | 261 | compensating·for·large·file·write·operations·(these·are·regarded·as·a·schedule |
| 262 | out·followed·by·a·schedule·in·to·the·same·process).</p><p>Let·us·find·the·<code·class="inline">suspend</code>·entry:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 262 | out·followed·by·a·schedule·in·to·the·same·process).</p><p>Let·us·find·the·<code·class="inline">suspend</code>·entry:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="2947236222-1">{</span><span·class="p"·data-group-id="2947236222-2">[</span><span·class="p"·data-group-id="2947236222-3">{</span><span·class="p"·data-group-id="2947236222-4">{</span><span·class="ss">file</span><span·class="p">,</span><span·class="ss">write<[·...·truncated·by·diffoscope;·len:·405,·SHA:·e366a8c4b2d720067dfa231f8cdd8acb221eadebf8bc2fcb9ea223d2626252e4·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 263 | ··</span><span·class="p"·data-group-id=" | 263 | ··</span><span·class="p"·data-group-id="2947236222-5">{</span><span·class="p"·data-group-id="2947236222-6">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="ss">create_file_slow</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="2947236222[·...·truncated·by·diffoscope;·len:·299,·SHA:·7cb61c3c96c73a0758a090145b11ca74d3124aaab714cd0fe40dc86b484763bd·...·]-5">}</span><span·class="p">,</span><span·class="w"> |
| 264 | ··</span><span·class="p"·data-group-id=" | 264 | ··</span><span·class="p"·data-group-id="2947236222-7">{</span><span·class="p"·data-group-id="2947236222-8">{</span><span·class="ss">prim_file</span><span·class="p">,</span><span·class="ss">drv_command</span><span·class="p">,</span><span·class="mi">4</span><span·class="p"·data-group-id="294723622[·...·truncated·by·diffoscope;·len:·299,·SHA:·ec197604739f699a210910b2c4a56323510bc4974aad9815123107e2ee9e2fed·...·]-7">}</span><span·class="p">,</span><span·class="w"> |
| 265 | ··</span><span·class="p"·data-group-id=" | 265 | ··</span><span·class="p"·data-group-id="2947236222-9">{</span><span·class="p"·data-group-id="2947236222-10">{</span><span·class="ss">prim_file</span><span·class="p">,</span><span·class="ss">drv_get_response</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="294[·...·truncated·by·diffoscope;·len:·301,·SHA:·caf9dbefb43fb22c3c0ef633c08e5e2cc2fb068252e1670c9f013d71c26f7f5b·...·]-9">}</span><span·class="p">,</span><span·class="w"> |
| 266 | ··</span><span·class="p"·data-group-id=" | 266 | ··</span><span·class="p"·data-group-id="2947236222-11">{</span><span·class="p"·data-group-id="2947236222-12">{</span><span·class="ss">lists</span><span·class="p">,</span><span·class="ss">map</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="2947236222-12">}</s[·...·truncated·by·diffoscope;·len:·302,·SHA:·33998d2aecb3c3d4dbd156f0facf266272237ce5464b43e1df74c2081598c918·...·]-11">}</span><span·class="p">,</span><span·class="w"> |
| 267 | ··</span><span·class="p"·data-group-id=" | 267 | ··</span><span·class="p"·data-group-id="2947236222-13">{</span><span·class="p"·data-group-id="2947236222-14">{</span><span·class="ss">prim_file</span><span·class="p">,</span><span·class="ss">write</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="2947236222-14[·...·truncated·by·diffoscope;·len:·302,·SHA:·3ac4954ca2f10c9c515f75da55881dfe87bbb37c50e558a41953aa9c5096c6b7·...·]-13">}</span><span·class="p">,</span><span·class="w"> |
| 268 | ··</span><span·class="p"·data-group-id=" | 268 | ··</span><span·class="p"·data-group-id="2947236222-15">{</span><span·class="p"·data-group-id="2947236222-16">{</span><span·class="ss">erlang</span><span·class="p">,</span><span·class="nb">port_command</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="294723622[·...·truncated·by·diffoscope;·len:·302,·SHA:·99c1910e00c04f1a9052130bc3c969598edee71a54da4381a06d102a7fdc2af7·...·]-15">}</span><span·class="p">,</span><span·class="w"> |
| 269 | ··</span><span·class="p"·data-group-id=" | 269 | ··</span><span·class="p"·data-group-id="2947236222-17">{</span><span·class="p"·data-group-id="2947236222-18">{</span><span·class="ss">prim_file</span><span·class="p">,</span><span·class="ss">drv_command</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="2947236[·...·truncated·by·diffoscope;·len:·302,·SHA:·eb2cac73c4d656910a9f49051308ac5eff2f3f4e777088924a96449e78ca4396·...·]-17">}</span><span·class="p">,</span><span·class="w"> |
| 270 | ··</span><span·class="p"·data-group-id=" | 270 | ··</span><span·class="p"·data-group-id="2947236222-19">{</span><span·class="p"·data-group-id="2947236222-20">{</span><span·class="ss">prim_file</span><span·class="p">,</span><span·class="ss">translate_response</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="[·...·truncated·by·diffoscope;·len:·302,·SHA:·380cef01f6aa4d1b1a710547766b18e78c0ab23fd6fe2612c9a7e673cb464606·...·]-19">}</span><span·class="p">,</span><span·class="w"> |
| 271 | ··</span><span·class="p"·data-group-id=" | 271 | ··</span><span·class="p"·data-group-id="2947236222-21">{</span><span·class="p"·data-group-id="2947236222-22">{</span><span·class="ss">prim_file</span><span·class="p">,</span><span·class="ss">'-drv_command/2-fun-0-'</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·da[·...·truncated·by·diffoscope;·len:·312,·SHA:·b01514a007a3b29a03ab39be8b5cbea2b60150dac928fe1f74b64b9c1f9a7cc3·...·]-21">}</span><span·class="p">,</span><span·class="w"> |
| 272 | ··</span><span·class="p"·data-group-id=" | 272 | ··</span><span·class="p"·data-group-id="2947236222-23">{</span><span·class="p"·data-group-id="2947236222-24">{</span><span·class="ss">lists</span><span·class="p">,</span><span·class="ss">seq</span><span·class="p">,</span><span·class="mi">4</span><span·class="p"·data-group-id="2947236222-24">}</s[·...·truncated·by·diffoscope;·len:·302,·SHA:·72d21fde164613beec31b241ce605f4cd3cac833fbb8658afc1077b039cad513·...·]-23">}</span><span·class="p">,</span><span·class="w"> |
| 273 | ··</span><span·class="p"·data-group-id=" | 273 | ··</span><span·class="p"·data-group-id="2947236222-25">{</span><span·class="p"·data-group-id="2947236222-26">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="ss">'-create_file_slow/2-fun-0-'</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·311,·SHA:·4c12ce5ac3d0198a32a6eedcdd3ea5a4966af9a1c840969b1fca3d9ebfe62f2a·...·]-25">}</span><span·class="p">,</span><span·class="w"> |
| 274 | ··</span><span·class="p"·data-group-id=" | 274 | ··</span><span·class="p"·data-group-id="2947236222-27">{</span><span·class="p"·data-group-id="2947236222-28">{</span><span·class="ss">erlang</span><span·class="p">,</span><span·class="nb">bump_reductions</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="294723[·...·truncated·by·diffoscope;·len:·302,·SHA:·b69270e9f7a5ecfa948084fa5f0097710b016a005fc3701ab6f7c87b6d33b8c3·...·]-27">}</span><span·class="p">,</span><span·class="w"> |
| 275 | ··</span><span·class="p"·data-group-id=" | 275 | ··</span><span·class="p"·data-group-id="2947236222-29">{</span><span·class="p"·data-group-id="2947236222-30">{</span><span·class="ss">prim_file</span><span·class="p">,</span><span·class="ss">open_int_setopts</span><span·class="p">,</span><span·class="mi">3</span><span·class="p"·data-group-id="29[·...·truncated·by·diffoscope;·len:·302,·SHA:·575ac2f7a8a7d837452ec573a57a1839696df3c558cf4836c48dbb3536c4a5db·...·]-29">}</span><span·class="p">,</span><span·class="w"> |
| 276 | ··</span><span·class="p"·data-group-id=" | 276 | ··</span><span·class="p"·data-group-id="2947236222-31">{</span><span·class="p"·data-group-id="2947236222-32">{</span><span·class="ss">prim_file</span><span·class="p">,</span><span·class="ss">i32</span><span·class="p">,</span><span·class="mi">4</span><span·class="p"·data-group-id="2947236222-32">[·...·truncated·by·diffoscope;·len:·302,·SHA:·8a7991e05ad42f0fe161ef36c658fd32a9e0c0318874a85b517335c68c4a866e·...·]-31">}</span><span·class="p">,</span><span·class="w"> |
| 277 | ··</span><span·class="p"·data-group-id=" | 277 | ··</span><span·class="p"·data-group-id="2947236222-33">{</span><span·class="p"·data-group-id="2947236222-34">{</span><span·class="ss">fprof</span><span·class="p">,</span><span·class="ss">apply_start_stop</span><span·class="p">,</span><span·class="mi">4</span><span·class="p"·data-group-id="294723[·...·truncated·by·diffoscope;·len:·356,·SHA:·a7fdb73e9987b25ac0ce74f13cdad8e34e3208722703f34fef5012669a9567e7·...·]-2">]</span><span·class="p">,</span><span·class="w"> |
| 278 | ·</span><span·class="p"·data-group-id=" | 278 | ·</span><span·class="p"·data-group-id="2947236222-35">{</span><span·class="w">·</span><span·class="ss">suspend</span><span·class="p">,</span><span·class="w">·····························</span><span·class="mi">299</span><span·class="p">,</span><span·class="w">···</span><span·class="mf">32.002</[·...·truncated·by·diffoscope;·len:·126,·SHA:·4da8fbe08bbfbd16d215f3f1511b4a885a90b56c0d98999754bfbfccd8c56295·...·]-35">}</span><span·class="p">,</span><span·class="w">·····</span><span·class="c1">%</span><span·class="w"> |
| 279 | ·</span><span·class="p"·data-group-id=" | 279 | ·</span><span·class="p"·data-group-id="2947236222-36">[</span><span·class="w">·</span><span·class="p"·data-group-id="2947236222-36">]</span><span·class="p"·data-group-id="2947236222-1">}</span><span·class="p">.</span></code></pre><p>We·find·no·particularly·long·suspend·times,·so·no·function·seems·to·have·waited |
| 280 | in·a·receive·statement.·Actually,·<code·class="inline">prim_file:drv_command/4</code>·contains·a·receive | 280 | in·a·receive·statement.·Actually,·<code·class="inline">prim_file:drv_command/4</code>·contains·a·receive |
| 281 | statement,·but·in·this·test·program,·the·message·lies·in·the·process·receive | 281 | statement,·but·in·this·test·program,·the·message·lies·in·the·process·receive |
| 282 | buffer·when·the·receive·statement·is·entered.·We·also·see·that·the·total·suspend | 282 | buffer·when·the·receive·statement·is·entered.·We·also·see·that·the·total·suspend |
| 283 | time·for·the·test·run·is·small.</p><p>The·<code·class="inline">suspend</code>·pseudo·function·has·an·<code·class="inline">OWN</code>·time·of·zero.·This·is·to·prevent | 283 | time·for·the·test·run·is·small.</p><p>The·<code·class="inline">suspend</code>·pseudo·function·has·an·<code·class="inline">OWN</code>·time·of·zero.·This·is·to·prevent |
| 284 | the·process·total·<code·class="inline">OWN</code>·time·from·including·time·in·suspension.·Whether·suspend | 284 | the·process·total·<code·class="inline">OWN</code>·time·from·including·time·in·suspension.·Whether·suspend |
| 285 | time·is·really·<code·class="inline">ACC</code>·or·<code·class="inline">OWN</code>·time·is·more·of·a·philosophical·question.</p><p>Now·we·look·at·another·interesting·pseudo·function,·<code·class="inline">garbage_collect</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="94 | 285 | time·is·really·<code·class="inline">ACC</code>·or·<code·class="inline">OWN</code>·time·is·more·of·a·philosophical·question.</p><p>Now·we·look·at·another·interesting·pseudo·function,·<code·class="inline">garbage_collect</code>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="9459485459-1">{</span><span·class="p"·data-group-id="9459485459-2">[</span><span·class="p"·data-group-id="9459485459-3">{</span><span·class="p"·data-group-id="9459485459-4">{</span><span·class="ss">prim_file</span><span·class="p">,</span><span·class="ss">drv[·...·truncated·by·diffoscope;·len:·403,·SHA:·5d9437cf44c259624423ffdf7dc62b512832e2971d065e21cea2895e6a9304a8·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 286 | ··</span><span·class="p"·data-group-id="94 | 286 | ··</span><span·class="p"·data-group-id="9459485459-5">{</span><span·class="p"·data-group-id="9459485459-6">{</span><span·class="ss">prim_file</span><span·class="p">,</span><span·class="ss">write</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="9459485459-6">}</[·...·truncated·by·diffoscope;·len:·297,·SHA:·e566386bfbeb87871033de661f8b90e5463e2957982fc6bbb6614ec181529604·...·]-5">}</span><span·class="p">,</span><span·class="w"> |
| 287 | ··</span><span·class="p"·data-group-id="94 | 287 | ··</span><span·class="p"·data-group-id="9459485459-7">{</span><span·class="p"·data-group-id="9459485459-8">{</span><span·class="ss">lists</span><span·class="p">,</span><span·class="ss">map</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="9459485459-8">}</span><[·...·truncated·by·diffoscope;·len:·350,·SHA:·358e129f6e2d8e3ecc97207854386c24586c0d660ff96bc52b75624f7da0dccd·...·]-2">]</span><span·class="p">,</span><span·class="w"> |
| 288 | ·</span><span·class="p"·data-group-id="94 | 288 | ·</span><span·class="p"·data-group-id="9459485459-9">{</span><span·class="w">·</span><span·class="nb">garbage_collect</span><span·class="p">,</span><span·class="w">······················</span><span·class="mi">43</span><span·class="p">,</span><span·class="w">····</span><span·class="mf">1.760</spa[·...·truncated·by·diffoscope;·len:·123,·SHA:·74ed3a4f1dca48257124bf213e2fcd4f61919044b4ac210e067343469ca971a5·...·]-9">}</span><span·class="p">,</span><span·class="w">·····</span><span·class="c1">%</span><span·class="w"> |
| 289 | ·</span><span·class="p"·data-group-id="94 | 289 | ·</span><span·class="p"·data-group-id="9459485459-10">[</span><span·class="w">·</span><span·class="p"·data-group-id="9459485459-10">]</span><span·class="p"·data-group-id="9459485459-1">}</span><span·class="p">.</span></code></pre><p>Here·we·see·that·no·function·stands·out,·which·is·very·normal.</p><p>The·<code·class="inline">garbage_collect</code>·pseudo·function·has·not·an·<code·class="inline">OWN</code>·time·of·zero·like |
| 290 | <code·class="inline">suspend</code>,·instead·it·is·equal·to·the·<code·class="inline">ACC</code>·time.</p><p>Garbage·collection·often·occurs·while·a·process·is·suspended,·but·<code·class="inline">fprof</code>·hides | 290 | <code·class="inline">suspend</code>,·instead·it·is·equal·to·the·<code·class="inline">ACC</code>·time.</p><p>Garbage·collection·often·occurs·while·a·process·is·suspended,·but·<code·class="inline">fprof</code>·hides |
| 291 | this·fact·by·pretending·that·the·suspended·function·was·first·unsuspended·and | 291 | this·fact·by·pretending·that·the·suspended·function·was·first·unsuspended·and |
| 292 | then·garbage·collected.·Otherwise·the·printout·would·show·<code·class="inline">garbage_collect</code> | 292 | then·garbage·collected.·Otherwise·the·printout·would·show·<code·class="inline">garbage_collect</code> |
| 293 | being·called·from·<code·class="inline">suspend</code>,·but·not·which·function·that·might·have·caused·the | 293 | being·called·from·<code·class="inline">suspend</code>,·but·not·which·function·that·might·have·caused·the |
| 294 | garbage·collection.</p><p>Let·us·now·get·back·to·the·test·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 294 | garbage·collection.</p><p>Let·us·now·get·back·to·the·test·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="2995538952-1">{</span><span·class="p"·data-group-id="2995538952-2">[</span><span·class="p"·data-group-id="2995538952-3">{</span><span·class="p"·data-group-id="2995538952-4">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="ss">create_[·...·truncated·by·diffoscope;·len:·405,·SHA:·954d32aa3907289dee670dc39f0e98b965c57ec7f1f5b4d20f58a43cb9e7e305·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 295 | ··</span><span·class="p"·data-group-id=" | 295 | ··</span><span·class="p"·data-group-id="2995538952-5">{</span><span·class="p"·data-group-id="2995538952-6">{</span><span·class="ss">foo</span><span·class="p">,</span><span·class="ss">create_file_slow</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-id="2995538952[·...·truncated·by·diffoscope;·len:·352,·SHA:·fd698e7255651616ccc55783694683345095bbfb884d7edbb9550d42cffba2b6·...·]-2">]</span><span·class="p">,</span><span·class="w"> |
| 296 | ·</span><span·class="p"·data-group-id=" | 296 | ·</span><span·class="p"·data-group-id="2995538952-7">{</span><span·class="w">·</span><span·class="p"·data-group-id="2995538952-8">{</span><span·class="ss">file</span><span·class="p">,</span><span·class="ss">write</span><span·class="p">,</span><span·class="mi">2</span><span·class="p"·data-group-[·...·truncated·by·diffoscope;·len:·323,·SHA:·92b9902ed2149a1c1e9f940518b8240216ba4d1fc548245da8e31c5bb7f70c62·...·]-7">}</span><span·class="p">,</span><span·class="w">·····</span><span·class="c1">%</span><span·class="w"> |
| 297 | ·</span><span·class="p"·data-group-id=" | 297 | ·</span><span·class="p"·data-group-id="2995538952-9">[</span><span·class="p"·data-group-id="2995538952-10">{</span><span·class="p"·data-group-id="2995538952-11">{</span><span·class="ss">prim_file</span><span·class="p">,</span><span·class="ss">write</span><span·class="p">,</span><span·class="mi"[·...·truncated·by·diffoscope;·len:·355,·SHA:·553b87abc920b96ef3fa3dcdf9fa30477bebacf568d02580111a41a87c631b81·...·]-10">}</span><span·class="p">,</span><span·class="w"> |
| 298 | ··</span><span·class="p"·data-group-id=" | 298 | ··</span><span·class="p"·data-group-id="2995538952-12">{</span><span·class="ss">suspend</span><span·class="p">,</span><span·class="w">······························</span><span·class="mi">53</span><span·class="p">,</span><span·class="w">····</span><span·class="mf">6.281</span><span·class="p">,</[·...·truncated·by·diffoscope;·len:·209,·SHA:·f08d93cf9807eab86819647bf1593447a68337bd6179868cf964439f5d199c10·...·]-1">}</span><span·class="p">.</span></code></pre><p>Not·unexpectedly,·we·see·that·<a·href="../../../../lib/kernel-10.2.3/doc/html/file.html#write/2"><code·class="inline">file:write/2</code></a>·was·called·from |
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| 172 | ··<a·href="#immediate-profiling"·class="hover-link"> | 172 | ··<a·href="#immediate-profiling"·class="hover-link"> |
| 173 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 173 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 174 | ··</a> | 174 | ··</a> |
| 175 | ··<span·class="text">Immediate·profiling</span> | 175 | ··<span·class="text">Immediate·profiling</span> |
| 176 | </h2> | 176 | </h2> |
| 177 | <p>It·is·also·possible·to·trace·immediately·into·the·profiling·process·that·creates | 177 | <p>It·is·also·possible·to·trace·immediately·into·the·profiling·process·that·creates |
| 178 | the·raw·profile·data,·that·is·to·short·circuit·the·tracing·and·profiling·steps | 178 | the·raw·profile·data,·that·is·to·short·circuit·the·tracing·and·profiling·steps |
| 179 | so·that·the·filesystem·is·not·used·for·tracing.</p><p>Do·something·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="4 | 179 | so·that·the·filesystem·is·not·used·for·tracing.</p><p>Do·something·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="4395200879-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tracer</span><span·class="p"·data-group-id="4395200879-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·c[·...·truncated·by·diffoscope;·len:·200,·SHA:·60feac42293a2fcb36fb6fcf550908fddf049582345f0068b35686ce53fe1bcd·...·]-2">)</span><span·class="p">,</span><span·class="w"> |
| 180 | </span><span·class="nc">fprof</span><span·class="p">:</span><span·class="nf">trace</span><span·class="p"·data-group-id="4 | 180 | </span><span·class="nc">fprof</span><span·class="p">:</span><span·class="nf">trace</span><span·class="p"·data-group-id="4395200879-3">(</span><span·class="p"·data-group-id="4395200879-4">[</span><span·class="ss">start</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4395200879-5">{</span><span·class="ss">tracer</span><span·class="p">,</spa[·...·truncated·by·diffoscope;·len:·202,·SHA:·cc8da825c6152790ec6266104b4888dcf10eebcdd61ec8d4b303df03a4e5e423·...·]-3">)</span><span·class="p">,</span><span·class="w"> |
| 181 | </span><span·class="c1">%%·Run·code·to·profile</span><span·class="w"> | 181 | </span><span·class="c1">%%·Run·code·to·profile</span><span·class="w"> |
| 182 | </span><span·class="nc">fprof</span><span·class="p">:</span><span·class="nf">trace</span><span·class="p"·data-group-id="4 | 182 | </span><span·class="nc">fprof</span><span·class="p">:</span><span·class="nf">trace</span><span·class="p"·data-group-id="4395200879-6">(</span><span·class="ss">stop</span><span·class="p"·data-group-id="4395200879-6">)</span><span·class="p">;</span></code></pre><p>This·puts·less·load·on·the·filesystem,·but·much·more·load·on·the·Erlang·runtime |
| 183 | system.</p> | 183 | system.</p> |
| 184 | </div> | 184 | </div> |
| 185 | <div·class="bottom-actions"·id="bottom-actions"> | 185 | <div·class="bottom-actions"·id="bottom-actions"> |
| 186 | ··<div·class="bottom-actions-item"> | 186 | ··<div·class="bottom-actions-item"> |
| 187 | ······<a·href="erlang_mode_chapter.html"·class="bottom-actions-button"·rel="prev"> | 187 | ······<a·href="erlang_mode_chapter.html"·class="bottom-actions-button"·rel="prev"> |
| Offset 229, 28 lines modified | Offset 229, 28 lines modified | ||
| 229 | ··<nonode@nohost.104.0>····5140··········0.7782········108 | 229 | ··<nonode@nohost.104.0>····5140··········0.7782········108 |
| 230 | ok</code></pre><h2·id="example-with-mnesia-transaction-benchmark"·class="section-heading"> | 230 | ok</code></pre><h2·id="example-with-mnesia-transaction-benchmark"·class="section-heading"> |
| 231 | ··<a·href="#example-with-mnesia-transaction-benchmark"·class="hover-link"> | 231 | ··<a·href="#example-with-mnesia-transaction-benchmark"·class="hover-link"> |
| 232 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 232 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 233 | ··</a> | 233 | ··</a> |
| 234 | ··<span·class="text">Example·with·Mnesia·Transaction·Benchmark</span> | 234 | ··<span·class="text">Example·with·Mnesia·Transaction·Benchmark</span> |
| 235 | </h2> | 235 | </h2> |
| 236 | <p>From·the·Erlang·shell:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Erlang</span><span·class="o">/</span><span·class="n">OTP</span><span·class="w">·</span><span·class="mi">27</span><span·class="w">·</span><span·class="p"·data-group-id=" | 236 | <p>From·the·Erlang·shell:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Erlang</span><span·class="o">/</span><span·class="n">OTP</span><span·class="w">·</span><span·class="mi">27</span><span·class="w">·</span><span·class="p"·data-group-id="5438848543-1">[</span><span·class="ss">erts</span><span·class="o">-</span><span·class="mf">15.0</span><span·class="p"·data-group-id="5438848543-1">]</span><span·class="w">·</span><span·class="p"·data-group-id="5438848543-2">[</span><span·class="mi">64</spa[·...·truncated·by·diffoscope;·len:·1287,·SHA:·917a4b53028009aaf01bfdc816446c8c76ee99ae3e5e7365eaa84fcf0c6f8504·...·]-7">]</span><span·class="w"> |
| 237 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V15</span><span·class="p">.</span><span·class="mi">0</span><span·class="w">·</span><span·class="p"·data-group-id=" | 237 | </span><span·class="n">Eshell</span><span·class="w">·</span><span·class="n">V15</span><span·class="p">.</span><span·class="mi">0</span><span·class="w">·</span><span·class="p"·data-group-id="5438848543-8">(</span><span·class="ss">press</span><span·class="w">·</span><span·class="n">Ctrl</span><span·class="o">+</span><span·class="n">G</span><span·class="w">·</span><span·class="ss">to</span><span·class="w">·</span><span·class="ss">abort</span><sp[·...·truncated·by·diffoscope;·len:·399,·SHA:·7dc1d299178d5e9365292c23a0e75e0d0abd671634bb98206b2ec1ba3b3c1016·...·]-8">)</span><span·class="gp·unselectable"> |
| 238 | 1>·</span><span·class="n">Conf</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id=" | 238 | 1>·</span><span·class="n">Conf</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="5438848543-10">[</span><span·class="p"·data-group-id="5438848543-11">{</span><span·class="ss">db_nodes</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="5438848543-12">[</span><span·class="nf">node</span><span·class="p"·d[·...·truncated·by·diffoscope;·len:·1155,·SHA:·0d80cad389c3d30b39cc1a7f1c93020124c8945f31454f5ab58d9bee63eb34b8·...·]-17">}</span><span·class="p">,</span><span·class="w"> |
| 239 | ····</span><span·class="p"·data-group-id=" | 239 | ····</span><span·class="p"·data-group-id="5438848543-20">{</span><span·class="ss">n_drivers_per_node</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">10</span><span·class="p"·data-group-id="5438848543-20">}</span><span·class="p">,</span><span·class="w">·</span><span·class="p"[·...·truncated·by·diffoscope;·len:·465,·SHA:·c07029b858a66c6d2fdd8f876daaa9e28d64e1f1bb75b72f0ee7ec094d43bd33·...·]-22">}</span><span·class="p">,</span><span·class="w"> |
| 240 | ····</span><span·class="p"·data-group-id=" | 240 | ····</span><span·class="p"·data-group-id="5438848543-23">{</span><span·class="ss">replica_type</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ram_copies</span><span·class="p"·data-group-id="5438848543-23">}</span><span·class="p">,</span><span·class="w">·</span><span·class="[·...·truncated·by·diffoscope;·len:·519,·SHA:·864cc42395c01bcf683ab620c2a234a689781a96f363dae2c820eeed855caf4b·...·]-10">]</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ok</span><span·class="p">.</span><span·class="w"> |
| 241 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 241 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 242 | 2>·</span><span·class="nc">mnesia_tpcb</span><span·class="p">:</span><span·class="nf">init</span><span·class="p"·data-group-id=" | 242 | 2>·</span><span·class="nc">mnesia_tpcb</span><span·class="p">:</span><span·class="nf">init</span><span·class="p"·data-group-id="5438848543-26">(</span><span·class="p"·data-group-id="5438848543-27">[</span><span·class="p"·data-group-id="5438848543-28">{</span><span·class="ss">use_running_mnesia</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">false</span><span·[·...·truncated·by·diffoscope;·len:·194,·SHA:·491945d80a7eb89f31f758584b081dd1889e03bb4ec427f3c9875717a58eb312·...·]-26">)</span><span·class="p">.</span><span·class="w"> |
| 243 | ····</span><span·class="p">.</span><span·class="w"> | 243 | ····</span><span·class="p">.</span><span·class="w"> |
| 244 | ····</span><span·class="p">.</span><span·class="w"> | 244 | ····</span><span·class="p">.</span><span·class="w"> |
| 245 | ····</span><span·class="p">.</span><span·class="w"> | 245 | ····</span><span·class="p">.</span><span·class="w"> |
| 246 | </span><span·class="ss">ignore</span></code></pre><p>Initial·configuring·of·the·benchmark·is·done.·It·is·time·to·profile·the·actual | 246 | </span><span·class="ss">ignore</span></code></pre><p>Initial·configuring·of·the·benchmark·is·done.·It·is·time·to·profile·the·actual |
| 247 | Mnesia·benchmark:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="nc">lcnt</span><span·class="p">:</span><span·class="nf">apply</span><span·class="p"·data-group-id=" | 247 | Mnesia·benchmark:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="nc">lcnt</span><span·class="p">:</span><span·class="nf">apply</span><span·class="p"·data-group-id="2023792581-1">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="2023792581-2">(</span><span·class="p"·data-group-id="2023792581-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·835,·SHA:·2a80da1243b45ef1cb8cc21999188ecc7c881dc403c22841631318593d5aa166·...·]1-7">{</span><span·class="ss">use_running_mnesia</span><span·class="p">,</span><span·class="w"> |
| 248 | ····</span><span·class="ss">true</span><span·class="p"·data-group-id=" | 248 | ····</span><span·class="ss">true</span><span·class="p"·data-group-id="2023792581-7">}</span><span·class="p">|</span><span·class="n">Conf</span><span·class="p"·data-group-id="2023792581-6">]</span><span·class="p"·data-group-id="2023792581-5">)</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tps</span><sp[·...·truncated·by·diffoscope;·len:·137,·SHA:·e8d5f5f8524f90a6f8a257b04bf526f71be80fca8ebc1fc52fe340c3fd9ec0d6·...·]1-1">)</span><span·class="p">.</span><span·class="w"> |
| 249 | ······</span><span·class="p">.</span><span·class="w"> | 249 | ······</span><span·class="p">.</span><span·class="w"> |
| 250 | ······</span><span·class="p">.</span><span·class="w"> | 250 | ······</span><span·class="p">.</span><span·class="w"> |
| 251 | ······</span><span·class="p">.</span><span·class="w"> | 251 | ······</span><span·class="p">.</span><span·class="w"> |
| 252 | </span><span·class="mf">50204.666666666664</span></code></pre><p>The·benchmark·runs·for·60·seconds·(followed·by·verification·and | 252 | </span><span·class="mf">50204.666666666664</span></code></pre><p>The·benchmark·runs·for·60·seconds·(followed·by·verification·and |
| 253 | analysis),·and·then·returns·the·number·of·transactions·per·seconds.</p><pre><code·class="text">4>·lcnt:swap_pid_keys(). | 253 | analysis),·and·then·returns·the·number·of·transactions·per·seconds.</p><pre><code·class="text">4>·lcnt:swap_pid_keys(). |
| 254 | ok | 254 | ok |
| 255 | 5>·lcnt:conflicts(). | 255 | 5>·lcnt:conflicts(). |
| Offset 346, 71 lines modified | Offset 346, 71 lines modified | ||
| 346 | problematic·if·they·begin·to·have·conflicts·even·if·it·is·not·shown·in·a | 346 | problematic·if·they·begin·to·have·conflicts·even·if·it·is·not·shown·in·a |
| 347 | particular·test.</p><h2·id="the-big-bang-benchmark"·class="section-heading"> | 347 | particular·test.</p><h2·id="the-big-bang-benchmark"·class="section-heading"> |
| 348 | ··<a·href="#the-big-bang-benchmark"·class="hover-link"> | 348 | ··<a·href="#the-big-bang-benchmark"·class="hover-link"> |
| 349 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 349 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 350 | ··</a> | 350 | ··</a> |
| 351 | ··<span·class="text">The·Big·Bang·Benchmark</span> | 351 | ··<span·class="text">The·Big·Bang·Benchmark</span> |
| 352 | </h2> | 352 | </h2> |
| 353 | <pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 353 | <pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="9398123172-1">(</span><span·class="ss">big</span><span·class="p"·data-group-id="9398123172-1">)</span><span·class="p">.</span><span·class="w"> |
| 354 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 354 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="9398123172-2">(</span><span·class="p"·data-group-id="9398123172-3">[</span><span·class="ss">bang</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id="9398123172-3">]</span><span·class="p"·data-group-id="9398123172-2">)</span><span·class="p">.</span><span·class="w"> |
| 355 | </span><span·class="nf">pinger</span><span·class="p"·data-group-id=" | 355 | </span><span·class="nf">pinger</span><span·class="p"·data-group-id="9398123172-4">(</span><span·class="p"·data-group-id="9398123172-5">[</span><span·class="p"·data-group-id="9398123172-5">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9398123172-6">[</span><span·class="p"·data-group-[·...·truncated·by·diffoscope;·len:·143,·SHA:·4a25654285a9fdb4ec5ade26be2057b82d69b1f4506b429cdf79b7bdd90bea1b·...·]-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 356 | ····</span><span·class="k">receive</span><span·class="w"> | 356 | ····</span><span·class="k">receive</span><span·class="w"> |
| 357 | » </span><span·class="p"·data-group-id=" | 357 | » </span><span·class="p"·data-group-id="9398123172-7">{</span><span·class="ss">procs</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Procs</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ReportTo</span><span·class="p"·data-group-id="9398123172-7">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 358 | » ····</span><span·class="nf">pinger</span><span·class="p"·data-group-id=" | 358 | » ····</span><span·class="nf">pinger</span><span·class="p"·data-group-id="9398123172-8">(</span><span·class="n">Procs</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9398123172-9">[</span><span·class="p"·data-group-id="9398123172-9">]</span><span·class="p">,</span><span·class="w">·</span><spa[·...·truncated·by·diffoscope;·len:·68,·SHA:·347fffab9baad33064be2b58163506ef572392091fdb38ee64e1609f55730947·...·]-8">)</span><span·class="w"> |
| 359 | ····</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> | 359 | ····</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> |
| 360 | </span><span·class="nf">pinger</span><span·class="p"·data-group-id=" | 360 | </span><span·class="nf">pinger</span><span·class="p"·data-group-id="9398123172-10">(</span><span·class="p"·data-group-id="9398123172-11">[</span><span·class="p"·data-group-id="9398123172-11">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9398123172-12">[</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·149,·SHA:·2c4ba9e61b1dfb4c811add8ed22f7c01112783b55b753e818f419bb64c6c33e7·...·]-10">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 361 | ····</span><span·class="k">receive</span><span·class="w">·</span><span·class="p"·data-group-id=" | 361 | ····</span><span·class="k">receive</span><span·class="w">·</span><span·class="p"·data-group-id="9398123172-13">{</span><span·class="ss">ping</span><span·class="p">,</span><span·class="w">·</span><span·class="n">From</span><span·class="p"·data-group-id="9398123172-13">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span>[·...·truncated·by·diffoscope;·len:·406,·SHA:·8caa64af155fe2d279ac8de8ee522b57334c245254b6fa8d337f89441841662a·...·]-14">}</span><span·class="w">·</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 362 | ····</span><span·class="nf">pinger</span><span·class="p"·data-group-id=" | 362 | ····</span><span·class="nf">pinger</span><span·class="p"·data-group-id="9398123172-16">(</span><span·class="p"·data-group-id="9398123172-17">[</span><span·class="p"·data-group-id="9398123172-17">]</span><span·class="p">,</span><span·class="p"·data-group-id="9398123172-18">[</span><span·class="p"·data-group-id="9398123172-18">][·...·truncated·by·diffoscope;·len:·101,·SHA:·1031201ca749de0a858567972d0f69713c9b28b548ca3d117a814cdbef6a8251·...·]-16">)</span><span·class="p">;</span><span·class="w"> |
| 363 | </span><span·class="nf">pinger</span><span·class="p"·data-group-id=" | 363 | </span><span·class="nf">pinger</span><span·class="p"·data-group-id="9398123172-19">(</span><span·class="p"·data-group-id="9398123172-20">[</span><span·class="p"·data-group-id="9398123172-20">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9398123172-21">[</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·151,·SHA:·e958bb52c05b9976133bd53f96a217000ba00e40981d6dc8bf90691bccf06757·...·]-19">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 364 | ····</span><span·class="n">ReportTo</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 364 | ····</span><span·class="n">ReportTo</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="9398123172-22">{</span><span·class="ss">done</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="9398123172-23">(</span><span·class="p"·data-group-id="9398123172-23">)</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·20,·SHA:·f9ffedae1ed95392e42baa6010c644549cd6cf27c571d2a20389ab124b7057dc·...·]-22">}</span><span·class="p">,</span><span·class="w"> |
| 365 | ····</span><span·class="nf">pinger</span><span·class="p"·data-group-id=" | 365 | ····</span><span·class="nf">pinger</span><span·class="p"·data-group-id="9398123172-24">(</span><span·class="p"·data-group-id="9398123172-25">[</span><span·class="p"·data-group-id="9398123172-25">]</span><span·class="p">,</span><span·class="p"·data-group-id="9398123172-26">[</span><span·class="p"·data-group-id="9398123172-26">][·...·truncated·by·diffoscope;·len:·101,·SHA:·1031201ca749de0a858567972d0f69713c9b28b548ca3d117a814cdbef6a8251·...·]-24">)</span><span·class="p">;</span><span·class="w"> |
| 366 | </span><span·class="nf">pinger</span><span·class="p"·data-group-id=" | 366 | </span><span·class="nf">pinger</span><span·class="p"·data-group-id="9398123172-27">(</span><span·class="p"·data-group-id="9398123172-28">[</span><span·class="p"·data-group-id="9398123172-28">]</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9398123172-29">[</span><span·class="n">Po</spa[·...·truncated·by·diffoscope;·len:·328,·SHA:·d47b5e852549e5d8175e5b1c3763b0c55c3b2dc93567f16bb16613888a5fb174·...·]-27">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 367 | ····</span><span·class="k">receive</span><span·class="w"> | 367 | ····</span><span·class="k">receive</span><span·class="w"> |
| 368 | » </span><span·class="p"·data-group-id=" | 368 | » </span><span·class="p"·data-group-id="9398123172-30">{</span><span·class="ss">ping</span><span·class="p">,</span><span·class="w">·</span><span·class="n">From</span><span·class="p"·data-group-id="9398123172-30">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 369 | » ····</span><span·class="n">From</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 369 | » ····</span><span·class="n">From</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="9398123172-31">{</span><span·class="ss">pong</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="9398123172-32">(</span><span·class="p"·data-group-id="9398123172-32">)</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·20,·SHA:·f9ffedae1ed95392e42baa6010c644549cd6cf27c571d2a20389ab124b7057dc·...·]-31">}</span><span·class="p">,</span><span·class="w"> |
| 370 | » ····</span><span·class="nf">pinger</span><span·class="p"·data-group-id="5432483576-33">(</span><span·class="p"·data-group-id="5432483576-34">[</span><span·class="p"·data-group-id="5432483576-34">]</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pongers</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ReportTo</span><span·class="p"·data-group-id="5432483576-33">)</span><span·class="p">;</span><span·class="w"> | ||
| 371 | » </span><span·class= | 370 | » ····</span><span·class="nf">pinger</span><span·class="p"·data-group-id="9398123172-33">(</span><span·class="p"·data-group-id="9398123172-34">[</span><span·class="p"·data-group-id="9398123172-34">]</span><span·class="p">,</span><span·class="w">·</span><span[·...·truncated·by·diffoscope;·len:·174,·SHA:·1e885a5ba55af1f021d84679f9c4d02bc5f7712a2fc56cff315358475b5a32c5·...·];</span><span·class="w"> |
| 371 | » </span><span·class="p"·data-group-id="9398123172-35">{</span><span·class="ss">pong</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Po</span><span·class="p"·data-group-id="9398123172-35">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | ||
| 372 | » ····</span><span·class="nf">pinger</span><span·class="p"·data-group-id=" | 372 | » ····</span><span·class="nf">pinger</span><span·class="p"·data-group-id="9398123172-36">(</span><span·class="p"·data-group-id="9398123172-37">[</span><span·class="p"·data-group-id="9398123172-37">]</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Pos</span><span·class="p">,</span><span·class="w">·</span><sp[·...·truncated·by·diffoscope;·len:·69,·SHA:·21dcc97187629ccfd798f883d85b2c231fbcd401b3812a914cd3c2b9b97315b7·...·]-36">)</span><span·class="w"> |
| 373 | ····</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> | 373 | ····</span><span·class="k">end</span><span·class="p">;</span><span·class="w"> |
| 374 | </span><span·class="nf">pinger</span><span·class="p"·data-group-id=" | 374 | </span><span·class="nf">pinger</span><span·class="p"·data-group-id="9398123172-38">(</span><span·class="p"·data-group-id="9398123172-39">[</span><span·class="n">Pi</span><span·class="p">|</span><span·class="n">Pis</span><span·class="p"·data-group-id="9398123172-39">]</span><span·class="p">,</span><span·class="w">·</span><s[·...·truncated·by·diffoscope;·len:·148,·SHA:·95990211ac374a8d00b73ebac8f5a639f79286894144670d0c74c02942ed98af·...·]-38">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 375 | ····</span><span·class="k">receive</span><span·class="w">·</span><span·class="p"·data-group-id=" | 375 | ····</span><span·class="k">receive</span><span·class="w">·</span><span·class="p"·data-group-id="9398123172-40">{</span><span·class="ss">ping</span><span·class="p">,</span><span·class="w">·</span><span·class="n">From</span><span·class="p"·data-group-id="9398123172-40">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span>[·...·truncated·by·diffoscope;·len:·406,·SHA:·b8640108ef7fdb5c0502e2dc8df91d5e5e40ff95d1872f55753d97600c9255b9·...·]-41">}</span><span·class="w"> |
| 376 | ····</span><span·class="k">after</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="w"> | 376 | ····</span><span·class="k">after</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="w"> |
| 377 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 377 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 378 | ····</span><span·class="n">Pi</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id=" | 378 | ····</span><span·class="n">Pi</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="p"·data-group-id="9398123172-43">{</span><span·class="ss">ping</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="9398123172-44">(</span><span·class="p"·data-group-id="9398123172-44">)</span><span·class="p"·data-[·...·truncated·by·diffoscope;·len:·20,·SHA:·f9ffedae1ed95392e42baa6010c644549cd6cf27c571d2a20389ab124b7057dc·...·]-43">}</span><span·class="p">,</span><span·class="w"> |
| 379 | ····</span><span·class="nf">pinger</span><span·class="p"·data-group-id=" | 379 | ····</span><span·class="nf">pinger</span><span·class="p"·data-group-id="9398123172-45">(</span><span·class="n">Pis</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9398123172-46">[</span><span·class="n">Pi</span><span·class="p">|</span><span·class="n">Pongers</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·148,·SHA:·bde1aff1e10a1a2cfd70a870b1e231fbae7e1ae9a08a0eec28dc2cab7b389af5·...·]-45">)</span><span·class="p">.</span><span·class="w"> |
| 380 | </span><span·class="nf">spawn_procs</span><span·class="p"·data-group-id=" | 380 | </span><span·class="nf">spawn_procs</span><span·class="p"·data-group-id="9398123172-47">(</span><span·class="n">N</span><span·class="p"·data-group-id="9398123172-47">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="n">N</span><span·class="w">·</span><span·class="o">=<</span><span·class="w">·</span><span·class="mi">0</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 381 | ····</span><span·class="p"·data-group-id=" | 381 | ····</span><span·class="p"·data-group-id="9398123172-48">[</span><span·class="p"·data-group-id="9398123172-48">]</span><span·class="p">;</span><span·class="w"> |
| 382 | </span><span·class="nf">spawn_procs</span><span·class="p"·data-group-id=" | 382 | </span><span·class="nf">spawn_procs</span><span·class="p"·data-group-id="9398123172-49">(</span><span·class="n">N</span><span·class="p"·data-group-id="9398123172-49">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 383 | ····</span><span·class="p"·data-group-id=" | 383 | ····</span><span·class="p"·data-group-id="9398123172-50">[</span><span·class="nf">spawn_link</span><span·class="p"·data-group-id="9398123172-51">(</span><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="9398123172-52">(</span><span·class="p"·data-group-id="939812317[·...·truncated·by·diffoscope;·len:·953,·SHA:·a451f15244007aff8c06fd0635b1158494e8280fa85ef99e71419ffdf5b2a6a0·...·]-50">]</span><span·class="p">.</span><span·class="w"> |
| 384 | </span><span·class="nf">send_procs</span><span·class="p"·data-group-id=" | 384 | </span><span·class="nf">send_procs</span><span·class="p"·data-group-id="9398123172-57">(</span><span·class="p"·data-group-id="9398123172-58">[</span><span·class="p"·data-group-id="9398123172-58">]</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p"·data-group-id="9398123172-57">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 385 | ····</span><span·class="n">Msg</span><span·class="p">;</span><span·class="w"> | 385 | ····</span><span·class="n">Msg</span><span·class="p">;</span><span·class="w"> |
| 386 | </span><span·class="nf">send_procs</span><span·class="p"·data-group-id=" | 386 | </span><span·class="nf">send_procs</span><span·class="p"·data-group-id="9398123172-59">(</span><span·class="p"·data-group-id="9398123172-60">[</span><span·class="n">P</span><span·class="p">|</span><span·class="n">Ps</span><span·class="p"·data-group-id="9398123172-60">]</span><span·class="p">,</span><span·class="w">·</span><spa[·...·truncated·by·diffoscope;·len:·63,·SHA:·924137a65347e42b838ad7448a457ced3e71776111534826f5c3b00a510885e0·...·]-59">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 387 | ····</span><span·class="n">P</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p">,</span><span·class="w"> | 387 | ····</span><span·class="n">P</span><span·class="w">·</span><span·class="o">!</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p">,</span><span·class="w"> |
| 388 | ····</span><span·class="nf">send_procs</span><span·class="p"·data-group-id=" | 388 | ····</span><span·class="nf">send_procs</span><span·class="p"·data-group-id="9398123172-61">(</span><span·class="n">Ps</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p"·data-group-id="9398123172-61">)</span><span·class="p">.</span><span·class="w"> |
| 389 | </span><span·class="nf">receive_msgs</span><span·class="p"·data-group-id=" | 389 | </span><span·class="nf">receive_msgs</span><span·class="p"·data-group-id="9398123172-62">(</span><span·class="p"·data-group-id="9398123172-63">[</span><span·class="p"·data-group-id="9398123172-63">]</span><span·class="p"·data-group-id="9398123172-62">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 390 | ····</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> | 390 | ····</span><span·class="ss">ok</span><span·class="p">;</span><span·class="w"> |
| 391 | </span><span·class="nf">receive_msgs</span><span·class="p"·data-group-id=" | 391 | </span><span·class="nf">receive_msgs</span><span·class="p"·data-group-id="9398123172-64">(</span><span·class="p"·data-group-id="9398123172-65">[</span><span·class="n">M</span><span·class="p">|</span><span·class="n">Ms</span><span·class="p"·data-group-id="9398123172-65">]</span><span·class="p"·data-group-id="9398123172-64">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 392 | ····</span><span·class="k">receive</span><span·class="w"> | 392 | ····</span><span·class="k">receive</span><span·class="w"> |
| 393 | » </span><span·class="n">M</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 393 | » </span><span·class="n">M</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 394 | » ····</span><span·class="nf">receive_msgs</span><span·class="p"·data-group-id=" | 394 | » ····</span><span·class="nf">receive_msgs</span><span·class="p"·data-group-id="9398123172-66">(</span><span·class="n">Ms</span><span·class="p"·data-group-id="9398123172-66">)</span><span·class="w"> |
| 395 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> | 395 | ····</span><span·class="k">end</span><span·class="p">.</span><span·class="w"> |
| 396 | </span><span·class="nf">bang</span><span·class="p"·data-group-id=" | 396 | </span><span·class="nf">bang</span><span·class="p"·data-group-id="9398123172-67">(</span><span·class="n">N</span><span·class="p"·data-group-id="9398123172-67">)</span><span·class="w">·</span><span·class="k">when</span><span·class="w">·</span><span·class="nf">integer</span><span·class="p"·data-group-id="9398123172-68">(</[·...·truncated·by·diffoscope;·len:·70,·SHA:·8bee65beb33d9da6e92b0685b51e3647cea208315b694861f03ad52b9b2ac599·...·]-68">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 397 | ····</span><span·class="n">Procs</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">spawn_procs</span><span·class="p"·data-group-id=" | 397 | ····</span><span·class="n">Procs</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">spawn_procs</span><span·class="p"·data-group-id="9398123172-69">(</span><span·class="n">N</span><span·class="p"·data-group-id="9398123172-69">)</span><span·class="p">,</span><span·class="w"> |
| 398 | ····</span><span·class="n">RMsgs</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">map</span><span·class="p"·data-group-id=" | 398 | ····</span><span·class="n">RMsgs</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">map</span><span·class="p"·data-group-id="9398123172-70">(</span><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="9398123172-71">(</span><span·class="n">P</span><span·class="p"·data-group-id="9398123172-71">)</span><span·class="w">·</span><span·class="p">-></spa[·...·truncated·by·diffoscope;·len:·401,·SHA:·a5b8bcc41ebca8840395dc03c909696fda4c8312e83e600e886fc90f3605855e·...·]-70">)</span><span·class="p">,</span><span·class="w"> |
| 399 | ····</span><span·class="n">Start</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">now</span><span·class="p"·data-group-id=" | 399 | ····</span><span·class="n">Start</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">now</span><span·class="p"·data-group-id="9398123172-73">(</span><span·class="p"·data-group-id="9398123172-73">)</span><span·class="p">,</span><span·class="w"> |
| 400 | ····</span><span·class="nf">send_procs</span><span·class="p"·data-group-id=" | 400 | ····</span><span·class="nf">send_procs</span><span·class="p"·data-group-id="9398123172-74">(</span><span·class="n">Procs</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9398123172-75">{</span><span·class="ss">procs</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Procs</spa[·...·truncated·by·diffoscope;·len:·281,·SHA:·605ea338cb7269b807d572faf40e51d90134a5f7f677e40cd2bd7e947c493c65·...·]-74">)</span><span·class="p">,</span><span·class="w"> |
| 401 | ····</span><span·class="nf">receive_msgs</span><span·class="p"·data-group-id=" | 401 | ····</span><span·class="nf">receive_msgs</span><span·class="p"·data-group-id="9398123172-77">(</span><span·class="n">RMsgs</span><span·class="p"·data-group-id="9398123172-77">)</span><span·class="p">,</span><span·class="w"> |
| 402 | ····</span><span·class="n">Stop</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">now</span><span·class="p"·data-group-id=" | 402 | ····</span><span·class="n">Stop</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">now</span><span·class="p"·data-group-id="9398123172-78">(</span><span·class="p"·data-group-id="9398123172-78">)</span><span·class="p">,</span><span·class="w"> |
| 403 | ····</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">foreach</span><span·class="p"·data-group-id=" | 403 | ····</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">foreach</span><span·class="p"·data-group-id="9398123172-79">(</span><span·class="nf">fun</span><span·class="w">·</span><span·class="p"·data-group-id="9398123172-80">(</span><span·class="n">P</span><span·class="p"·data-group-id="9398123172-80">)</span><span·class="w">·</span><span·class="p">-></spa[·...·truncated·by·diffoscope;·len:·431,·SHA:·642806948553948e2d5d39242969e012ffa91827c90e3c8d87555e1b5d56c53f·...·]-79">)</span><span·class="p">,</span><span·class="w"> |
| 404 | ····</span><span·class="nc">timer</span><span·class="p">:</span><span·class="nf">now_diff</span><span·class="p"·data-group-id=" | 404 | ····</span><span·class="nc">timer</span><span·class="p">:</span><span·class="nf">now_diff</span><span·class="p"·data-group-id="9398123172-82">(</span><span·class="n">Stop</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Start</span><span·class="p"·data-group-id="9398123172-82">)</span><span·class="p">.</span></code></pre><h2·id="see-also"·class="section-heading"> |
| 405 | ··<a·href="#see-also"·class="hover-link"> | 405 | ··<a·href="#see-also"·class="hover-link"> |
| 406 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 406 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 407 | ··</a> | 407 | ··</a> |
| 408 | ··<span·class="text">See·Also</span> | 408 | ··<span·class="text">See·Also</span> |
| 409 | </h2> | 409 | </h2> |
| 410 | <p><a·href="lcnt.html">LCNT·Reference·Manual</a></p> | 410 | <p><a·href="lcnt.html">LCNT·Reference·Manual</a></p> |
| 411 | </div> | 411 | </div> |
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| 138 | <p><a·href="#all/1"><code·class="inline">make:all/0,1</code></a>·and·<a·href="#files/2"><code·class="inline">make:files/1,2</code></a>·first·looks·for | 138 | <p><a·href="#all/1"><code·class="inline">make:all/0,1</code></a>·and·<a·href="#files/2"><code·class="inline">make:files/1,2</code></a>·first·looks·for |
| 139 | <code·class="inline">{emake,·Emake}</code>·in·options,·then·in·the·current·working·directory·for·a·file | 139 | <code·class="inline">{emake,·Emake}</code>·in·options,·then·in·the·current·working·directory·for·a·file |
| 140 | named·<code·class="inline">Emakefile</code>.·If·present·<code·class="inline">Emake</code>·should·contain·elements·like·this:</p><pre><code·class="text">Modules. | 140 | named·<code·class="inline">Emakefile</code>.·If·present·<code·class="inline">Emake</code>·should·contain·elements·like·this:</p><pre><code·class="text">Modules. |
| 141 | {Modules,Options}.</code></pre><p><code·class="inline">Modules</code>·is·an·atom·or·a·list·of·atoms.·It·can·be</p><ul><li>a·module·name,·for·exmaple,··<code·class="inline">file1</code></li><li>a·module·name·in·another·directory,·for·exmaple,·<code·class="inline">'../foo/file3'</code></li><li>a·set·of·modules·specified·with·a·wildcards,·for·exmaple,·<code·class="inline">'file*'</code></li><li>a·wildcard·indicating·all·modules·in·current·directory,·that·is:·<code·class="inline">'*'</code></li><li>a·list·of·any·of·the·above,·for·exmaple,·<code·class="inline">['file*','../foo/file3','File4']</code></li></ul><p><code·class="inline">Options</code>·is·a·list·of·compiler·options.</p><p><code·class="inline">Emakefile</code>·is·read·from·top·to·bottom.·If·a·module·matches·more·than·one·entry, | 141 | {Modules,Options}.</code></pre><p><code·class="inline">Modules</code>·is·an·atom·or·a·list·of·atoms.·It·can·be</p><ul><li>a·module·name,·for·exmaple,··<code·class="inline">file1</code></li><li>a·module·name·in·another·directory,·for·exmaple,·<code·class="inline">'../foo/file3'</code></li><li>a·set·of·modules·specified·with·a·wildcards,·for·exmaple,·<code·class="inline">'file*'</code></li><li>a·wildcard·indicating·all·modules·in·current·directory,·that·is:·<code·class="inline">'*'</code></li><li>a·list·of·any·of·the·above,·for·exmaple,·<code·class="inline">['file*','../foo/file3','File4']</code></li></ul><p><code·class="inline">Options</code>·is·a·list·of·compiler·options.</p><p><code·class="inline">Emakefile</code>·is·read·from·top·to·bottom.·If·a·module·matches·more·than·one·entry, |
| 142 | the·first·match·is·used.·For·example,·the·following·<code·class="inline">Emakefile</code>·means·that | 142 | the·first·match·is·used.·For·example,·the·following·<code·class="inline">Emakefile</code>·means·that |
| 143 | <code·class="inline">file1</code>·should·be·compiled·with·the·options·<code·class="inline">[debug_info,{i,"../foo"}]</code>,·while | 143 | <code·class="inline">file1</code>·should·be·compiled·with·the·options·<code·class="inline">[debug_info,{i,"../foo"}]</code>,·while |
| 144 | all·other·files·in·the·current·directory·should·be·compiled·with·only·the | 144 | all·other·files·in·the·current·directory·should·be·compiled·with·only·the |
| 145 | <code·class="inline">debug_info</code>·flag.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 145 | <code·class="inline">debug_info</code>·flag.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="6181771055-1">{</span><span·class="ss">'file1'</span><span·class="p">,</span><span·class="p"·data-group-id="6181771055-2">[</span><span·class="ss">debug_info</span><span·class="p">,</span><span·class="p"·data-group-id="6181771055-3">{</span><span·c[·...·truncated·by·diffoscope;·len:·230,·SHA:·7116ef572992e7d53df70a029ad7a6d9b3dbbcea6b6642537c73ab300be8e7b0·...·]-1">}</span><span·class="p">.</span><span·class="w"> |
| 146 | </span><span·class="p"·data-group-id=" | 146 | </span><span·class="p"·data-group-id="6181771055-4">{</span><span·class="ss">'*'</span><span·class="p">,</span><span·class="p"·data-group-id="6181771055-5">[</span><span·class="ss">debug_info</span><span·class="p"·data-group-id="6181771055-5">]</span><span·class="p"·data-group-id="6181[·...·truncated·by·diffoscope;·len:·6,·SHA:·7142029b91e633c8d17e77a0eb90e7db1c566fcb7a4fa87bd3a46e35886b71b4·...·]-4">}</span><span·class="p">.</span></code></pre><h2·id="module-see-also"·class="section-heading"> |
| 147 | ··<a·href="#module-see-also"·class="hover-link"> | 147 | ··<a·href="#module-see-also"·class="hover-link"> |
| 148 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 148 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 149 | ··</a> | 149 | ··</a> |
| 150 | ··<span·class="text">See·Also</span> | 150 | ··<span·class="text">See·Also</span> |
| 151 | </h2> | 151 | </h2> |
| 152 | <p><a·href="../../../../lib/compiler-8.6/doc/html/compile.html">The·Compiler·Application</a></p> | 152 | <p><a·href="../../../../lib/compiler-8.6/doc/html/compile.html">The·Compiler·Application</a></p> |
| 153 | ····</section> | 153 | ····</section> |
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| 163 | </h2> | 163 | </h2> |
| 164 | <h3·id="fixed-bugs-and-malfunctions-2"·class="section-heading"> | 164 | <h3·id="fixed-bugs-and-malfunctions-2"·class="section-heading"> |
| 165 | ··<a·href="#fixed-bugs-and-malfunctions-2"·class="hover-link"> | 165 | ··<a·href="#fixed-bugs-and-malfunctions-2"·class="hover-link"> |
| 166 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 166 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 167 | ··</a> | 167 | ··</a> |
| 168 | ··<span·class="text">Fixed·Bugs·and·Malfunctions</span> | 168 | ··<span·class="text">Fixed·Bugs·and·Malfunctions</span> |
| 169 | </h3> | 169 | </h3> |
| 170 | <ul><li><p>Dialyzer·warnings·due·to·type·specs·added·in·<a·href="../../../../lib/runtime_tools-2.1.1/doc/html/dbg.html"><code·class="inline">dbg</code></a>·have·been·eliminated.</p><p>Own·Id:·OTP-18860</p></li><li><p>In·Erlang/OTP·26,·doing·a·<a·href="cover.html"><code·class="inline">cover</code></a>·analysis·on·the·<code·class="inline">line</code>·level·would·return·multiple·entries·for·lines·on·which·multiple·functions·were·defined.</p><p>For·example,·consider·this·module:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 170 | <ul><li><p>Dialyzer·warnings·due·to·type·specs·added·in·<a·href="../../../../lib/runtime_tools-2.1.1/doc/html/dbg.html"><code·class="inline">dbg</code></a>·have·been·eliminated.</p><p>Own·Id:·OTP-18860</p></li><li><p>In·Erlang/OTP·26,·doing·a·<a·href="cover.html"><code·class="inline">cover</code></a>·analysis·on·the·<code·class="inline">line</code>·level·would·return·multiple·entries·for·lines·on·which·multiple·functions·were·defined.</p><p>For·example,·consider·this·module:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="1688865133-1">(</span><span·class="ss">foo</span><span·class="p"·data-group-id="1688865133-1">)</span><span·class="p">.</span><span·class="w"> |
| 171 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 171 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="1688865133-2">(</span><span·class="p"·data-group-id="1688865133-3">[</span><span·class="ss">bar</span><span·class="p">/</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">baz</span><span·class="p">/</span><span·[·...·truncated·by·diffoscope;·len:·113,·SHA:·ee9e0dc64eb56947e97771ac89f7879d22dd653879e763e714b44cd28bfa57c3·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 172 | </span><span·class="nf">bar</span><span·class="p"·data-group-id=" | 172 | </span><span·class="nf">bar</span><span·class="p"·data-group-id="1688865133-4">(</span><span·class="p"·data-group-id="1688865133-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">ok</span><span·class="p">.</span><span·class="w">·</span><span·class="nf">baz</span><spa[·...·truncated·by·diffoscope;·len:·90,·SHA:·80def4370532238be5df9ce85200ed9481eaec48d643b5226456070f5e6373af·...·]-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="ss">not_ok</span><span·class="p">.</span></code></pre><p>In·Erlang/OTP·26,·analysing·on·the·<code·class="inline">line</code>·level·would·return·two·entries |
| 173 | for·line·4:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">cover</span><span·class="p">:</span><span·class="nf">compile_module</span><span·class="p"·data-group-id=" | 173 | for·line·4:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">cover</span><span·class="p">:</span><span·class="nf">compile_module</span><span·class="p"·data-group-id="8972659658-1">(</span><span·class="ss">foo</span><span·class="p"·data-group-id="8972659658-1">)</span><span·class="p">.</span><span·class="w"> |
| 174 | </span><span·class="p"·data-group-id=" | 174 | </span><span·class="p"·data-group-id="8972659658-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="ss">foo</span><span·class="p"·data-group-id="8972659658-2">}</span><span·class="gp·unselectable"> |
| 175 | 2>·</span><span·class="nc">foo</span><span·class="p">:</span><span·class="nf">bar</span><span·class="p"·data-group-id=" | 175 | 2>·</span><span·class="nc">foo</span><span·class="p">:</span><span·class="nf">bar</span><span·class="p"·data-group-id="8972659658-3">(</span><span·class="p"·data-group-id="8972659658-3">)</span><span·class="p">.</span><span·class="w"> |
| 176 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 176 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 177 | 3>·</span><span·class="nc">cover</span><span·class="p">:</span><span·class="nf">analyse</span><span·class="p"·data-group-id=" | 177 | 3>·</span><span·class="nc">cover</span><span·class="p">:</span><span·class="nf">analyse</span><span·class="p"·data-group-id="8972659658-4">(</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">coverage</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">line</span><span·class="p"·data-group-id="8972659658-4">)</span><span·class="p">.</span><span·class="w"> |
| 178 | </span><span·class="p"·data-group-id=" | 178 | </span><span·class="p"·data-group-id="8972659658-5">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="8972659658-6">[</span><span·class="p"·data-group-id="8972659658-7">{</span><span·class="p"·data-group-id="8972659658-8">{</span><span·class="ss">foo</spa[·...·truncated·by·diffoscope;·len:·977,·SHA:·b2f26e6c28c6ef6c7dbc44b9846a96f36793ad8a3693bf20a1e466062740f7f8·...·]-5">}</span><span·class="gp·unselectable"> |
| 179 | 4>·</span><span·class="nc">cover</span><span·class="p">:</span><span·class="nf">analyse</span><span·class="p"·data-group-id=" | 179 | 4>·</span><span·class="nc">cover</span><span·class="p">:</span><span·class="nf">analyse</span><span·class="p"·data-group-id="8972659658-13">(</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">calls</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">line</span><span·class="p"·data-group-id="8972659658-13">)</span><span·class="p">.</span><span·class="w"> |
| 180 | </span><span·class="p"·data-group-id=" | 180 | </span><span·class="p"·data-group-id="8972659658-14">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="8972659658-15">[</span><span·class="p"·data-group-id="8972659658-16">{</span><span·class="p"·data-group-id="8972659658-17">{</span><span·class="ss">foo<[·...·truncated·by·diffoscope;·len:·1071,·SHA:·2d7fa91a23ba1021cef0d377371f9142c83bdbe1dba38e0ab47320b1701edb0c·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 181 | </span><span·class="p"·data-group-id="0 | 181 | </span><span·class="p"·data-group-id="2075159628-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="ss">foo</span><span·class="p"·data-group-id="2075159628-2">}</span><span·class="gp·unselectable"> |
| 182 | 2>·</span><span·class="nc">foo</span><span·class="p">:</span><span·class="nf">bar</span><span·class="p"·data-group-id="0 | 182 | 2>·</span><span·class="nc">foo</span><span·class="p">:</span><span·class="nf">bar</span><span·class="p"·data-group-id="2075159628-3">(</span><span·class="p"·data-group-id="2075159628-3">)</span><span·class="p">.</span><span·class="w"> |
| 183 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 183 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 184 | 3>·</span><span·class="nc">cover</span><span·class="p">:</span><span·class="nf">analyse</span><span·class="p"·data-group-id="0 | 184 | 3>·</span><span·class="nc">cover</span><span·class="p">:</span><span·class="nf">analyse</span><span·class="p"·data-group-id="2075159628-4">(</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">coverage</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">line</span><span·class="p"·data-group-id="2075159628-4">)</span><span·class="p">.</span><span·class="w"> |
| 185 | </span><span·class="p"·data-group-id="0 | 185 | </span><span·class="p"·data-group-id="2075159628-5">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="2075159628-6">[</span><span·class="p"·data-group-id="2075159628-7">{</span><span·class="p"·data-group-id="2075159628-8">{</span><span·class="ss">foo</spa[·...·truncated·by·diffoscope;·len:·455,·SHA:·fcd48ffc76eb1e93a1502177fd66e680a094899aa57ea3944ef269de99e0f56b·...·]-5">}</span><span·class="gp·unselectable"> |
| 186 | 4>·</span><span·class="nc">cover</span><span·class="p">:</span><span·class="nf">analyse</span><span·class="p"·data-group-id="0 | 186 | 4>·</span><span·class="nc">cover</span><span·class="p">:</span><span·class="nf">analyse</span><span·class="p"·data-group-id="2075159628-10">(</span><span·class="ss">foo</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">calls</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">line</span><span·class="p"·data-group-id="2075159628-10">)</span><span·class="p">.</span><span·class="w"> |
| 187 | </span><span·class="p"·data-group-id="0 | 187 | </span><span·class="p"·data-group-id="2075159628-11">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="2075159628-12">[</span><span·class="p"·data-group-id="2075159628-13">{</span><span·class="p"·data-group-id="2075159628-14">{</span><span·class="ss">foo<[·...·truncated·by·diffoscope;·len:·307,·SHA:·96eec5078cb675f41c3806c6f707abd8e8301191e819eee1910071a32b312908·...·]-11">}</span></code></pre><p>Own·Id:·OTP-18998·Aux·Id:·<a·href="https://github.com/erlang/otp/issues/8159"·title="">GH-8159</a>,·<a·href="https://github.com/erlang/otp/pull/8182"·title="">PR-8182</a></p></li><li><p>Fixed·align·command·in·emacs·mode.</p><p>Own·Id:·OTP-19026·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8155"·title="">PR-8155</a></p></li></ul><h3·id="improvements-and-new-features-1"·class="section-heading"> |
| 188 | ··<a·href="#improvements-and-new-features-1"·class="hover-link"> | 188 | ··<a·href="#improvements-and-new-features-1"·class="hover-link"> |
| 189 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 189 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 190 | ··</a> | 190 | ··</a> |
| 191 | ··<span·class="text">Improvements·and·New·Features</span> | 191 | ··<span·class="text">Improvements·and·New·Features</span> |
| 192 | </h3> | 192 | </h3> |
| 193 | <ul><li><p>Triple-Quoted·Strings·has·been·implemented·as·per·<a·href="https://www.erlang.org/eeps/eep-0064">EEP·64</a>.·See·<a·href="../../../../doc/system/data_types.html#string">String</a>·in·the·Reference·Manual.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="s">""</span><span·class="s">" | 193 | <ul><li><p>Triple-Quoted·Strings·has·been·implemented·as·per·<a·href="https://www.erlang.org/eeps/eep-0064">EEP·64</a>.·See·<a·href="../../../../doc/system/data_types.html#string">String</a>·in·the·Reference·Manual.</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="s">""</span><span·class="s">" |
| 194 | ···a | 194 | ···a |
| 195 | ···b | 195 | ···b |
| 196 | ···c | 196 | ···c |
| 197 | ···"</span><span·class="s">""</span><span·class="p">.</span><span·class="w"> | 197 | ···"</span><span·class="s">""</span><span·class="p">.</span><span·class="w"> |
| 198 | </span><span·class="s">"a\nb\nc"</span></code></pre><p>Adjacent·string·literals·without·intervening·white·space·is·now·a·syntax·error,·to·avoid·possible·confusion·with·triple-quoted·strings.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="s">"abc"</span><span·class="s">"xyz"</span><span·class="p">.</span><span·class="w"> | 198 | </span><span·class="s">"a\nb\nc"</span></code></pre><p>Adjacent·string·literals·without·intervening·white·space·is·now·a·syntax·error,·to·avoid·possible·confusion·with·triple-quoted·strings.·For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="s">"abc"</span><span·class="s">"xyz"</span><span·class="p">.</span><span·class="w"> |
| 199 | </span><span·class="s">"xyz"</span><span·class="p">.</span><span·class="w"> | 199 | </span><span·class="s">"xyz"</span><span·class="p">.</span><span·class="w"> |
| 200 | </span><span·class="gt">*·1:6:·adjacent·string·literals·without·intervening·white·space</span></code></pre><p><strong><em>·POTENTIAL·INCOMPATIBILITY·</em></strong></p><p>Own·Id:·OTP-18750·Aux·Id:·OTP-18746,·<a·href="https://github.com/erlang/otp/pull/7313"·title="">PR-7313</a>,·<a·href="https://github.com/erlang/otp/pull/7451"·title="">PR-7451</a></p></li><li><p>There·is·a·new·tool·<a·href="tprof.html"><code·class="inline">tprof</code></a>,·which·combines·the·functionality·of·<a·href="eprof.html"><code·class="inline">eprof</code></a>·and·<a·href="cprof.html"><code·class="inline">cprof</code></a>·under·one·interface·and·adds·heap·profiling.·It·also·has·functionality·to·help·with·profiling·process·hierarchies.</p><p><em>Example</em>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">tprof</span><span·class="p">:</span><span·class="nf">profile</span><span·class="p"·data-group-id=" | 200 | </span><span·class="gt">*·1:6:·adjacent·string·literals·without·intervening·white·space</span></code></pre><p><strong><em>·POTENTIAL·INCOMPATIBILITY·</em></strong></p><p>Own·Id:·OTP-18750·Aux·Id:·OTP-18746,·<a·href="https://github.com/erlang/otp/pull/7313"·title="">PR-7313</a>,·<a·href="https://github.com/erlang/otp/pull/7451"·title="">PR-7451</a></p></li><li><p>There·is·a·new·tool·<a·href="tprof.html"><code·class="inline">tprof</code></a>,·which·combines·the·functionality·of·<a·href="eprof.html"><code·class="inline">eprof</code></a>·and·<a·href="cprof.html"><code·class="inline">cprof</code></a>·under·one·interface·and·adds·heap·profiling.·It·also·has·functionality·to·help·with·profiling·process·hierarchies.</p><p><em>Example</em>:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">tprof</span><span·class="p">:</span><span·class="nf">profile</span><span·class="p"·data-group-id="0748792784-1">(</span><span·class="ss">lists</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">seq</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0748792784-2">[</span><span·class="mi">1</span><spa[·...·truncated·by·diffoscope;·len:·458,·SHA:·d0c5e4967c31f53848bb552932cbae6041dbdd9db3ccb8e453bc27e9254fcca6·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 201 | </span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Process</span><span·class="w">·</span><span·class="o"><</span><span·class="mf">0.92</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">··</span><span·class="o">--</span><span·class="w">··</span><span·class="mf">100.00</span><span·class="c1">%·of·total·***·</span><span·class="w"> | 201 | </span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Process</span><span·class="w">·</span><span·class="o"><</span><span·class="mf">0.92</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">··</span><span·class="o">--</span><span·class="w">··</span><span·class="mf">100.00</span><span·class="c1">%·of·total·***·</span><span·class="w"> |
| 202 | </span><span·class="n">FUNCTION</span><span·class="w">··········</span><span·class="n">CALLS</span><span·class="w">··</span><span·class="n">WORDS</span><span·class="w">··</span><span·class="n">PER</span><span·class="w">·</span><span·class="n">CALL</span><span·class="w">··</span><span·class="p"·data-group-id=" | 202 | </span><span·class="n">FUNCTION</span><span·class="w">··········</span><span·class="n">CALLS</span><span·class="w">··</span><span·class="n">WORDS</span><span·class="w">··</span><span·class="n">PER</span><span·class="w">·</span><span·class="n">CALL</span><span·class="w">··</span><span·class="p"·data-group-id="0748792784-4">[</span><span·class="w">·····</span><span·class="c1">%]</span><span·class="w"> |
| 203 | </span><span·class="nc">lists</span><span·class="p">:</span><span·class="ss">seq_loop</span><span·class="p">/</span><span·class="mi">3</span><span·class="w">······</span><span·class="mi">5</span><span·class="w">·····</span><span·class="mi">32</span><span·class="w">······</span><span·class="mf">6.40</span><span·class="w">··</span><span·class="p"·data-group-id=" | 203 | </span><span·class="nc">lists</span><span·class="p">:</span><span·class="ss">seq_loop</span><span·class="p">/</span><span·class="mi">3</span><span·class="w">······</span><span·class="mi">5</span><span·class="w">·····</span><span·class="mi">32</span><span·class="w">······</span><span·class="mf">6.40</span><span·class="w">··</span><span·class="p"·data-group-id="0748792784-5">[</span><span·class="mf">100.00</span><span·class="p"·data-group-id="0748792784-5">]</span><span·class="w"> |
| 204 | ····························</span><span·class="mi">32</span><span·class="w">············</span><span·class="p"·data-group-id=" | 204 | ····························</span><span·class="mi">32</span><span·class="w">············</span><span·class="p"·data-group-id="0748792784-6">[</span><span·class="w">·</span><span·class="mf">100.0</span><span·class="p"·data-group-id="0748792784-6">]</span><span·class="w"> |
| 205 | </span><span·class="ss">ok</span></code></pre><p>Own·Id:·OTP-18756·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/6639"·title="">PR-6639</a></p></li><li><p>Native·coverage·support·has·been·implemented·in·the·JIT.·It·will··automatically·be·used·by·the·<a·href="cover.html"><code·class="inline">cover</code></a>·tool·to·reduce·the·execution·overhead·when·running·cover-compiled·code.</p><p>There·are·also·new·APIs·to·support·native·coverage·without·using·the·<code·class="inline">cover</code>·tool.</p><p>To·instrument·code·for·native·coverage·it·must·be·compiled·with·the·<a·href="../../../../lib/compiler-8.6/doc/html/compile.html#line_coverage"><code·class="inline">line_coverage</code></a>·option.</p><p>To·enable·native·coverage·in·the·runtime·system,·start·it·like·so:</p><pre><code·class="text">$·erl·+JPcover·true</code></pre><p>There·are·also·the·following·new·functions·for·supporting·native·coverage:</p><ul><li><a·href="../../../../lib/kernel-10.2.3/doc/html/code.html#coverage_support/0"><code·class="inline">code:coverage_support/0</code></a></li><li><a·href="../../../../lib/kernel-10.2.3/doc/html/code.html#get_coverage/2"><code·class="inline">code:get_coverage/2</code></a></li><li><a·href="../../../../lib/kernel-10.2.3/doc/html/code.html#reset_coverage/1"><code·class="inline">code:reset_coverage/1</code></a></li><li><a·href="../../../../lib/kernel-10.2.3/doc/html/code.html#get_coverage_mode/0"><code·class="inline">code:get_coverage_mode/0</code></a></li><li><a·href="../../../../lib/kernel-10.2.3/doc/html/code.html#get_coverage_mode/1"><code·class="inline">code:get_coverage_mode/1</code></a></li><li><a·href="../../../../lib/kernel-10.2.3/doc/html/code.html#set_coverage_mode/1"><code·class="inline">code:set_coverage_mode/1</code></a></li></ul><p>Own·Id:·OTP-18856·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7856"·title="">PR-7856</a></p></li><li><p>The·documentation·has·been·migrated·to·use·Markdown·and·ExDoc.</p><p>Own·Id:·OTP-18955·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8026"·title="">PR-8026</a></p></li><li><p>Improved·the·align·command·in·emacs·mode.</p><p>Own·Id:·OTP-19080·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8288"·title="">PR-8288</a></p></li></ul><h2·id="tools-3-6"·class="section-heading"> | 205 | </span><span·class="ss">ok</span></code></pre><p>Own·Id:·OTP-18756·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/6639"·title="">PR-6639</a></p></li><li><p>Native·coverage·support·has·been·implemented·in·the·JIT.·It·will··automatically·be·used·by·the·<a·href="cover.html"><code·class="inline">cover</code></a>·tool·to·reduce·the·execution·overhead·when·running·cover-compiled·code.</p><p>There·are·also·new·APIs·to·support·native·coverage·without·using·the·<code·class="inline">cover</code>·tool.</p><p>To·instrument·code·for·native·coverage·it·must·be·compiled·with·the·<a·href="../../../../lib/compiler-8.6/doc/html/compile.html#line_coverage"><code·class="inline">line_coverage</code></a>·option.</p><p>To·enable·native·coverage·in·the·runtime·system,·start·it·like·so:</p><pre><code·class="text">$·erl·+JPcover·true</code></pre><p>There·are·also·the·following·new·functions·for·supporting·native·coverage:</p><ul><li><a·href="../../../../lib/kernel-10.2.3/doc/html/code.html#coverage_support/0"><code·class="inline">code:coverage_support/0</code></a></li><li><a·href="../../../../lib/kernel-10.2.3/doc/html/code.html#get_coverage/2"><code·class="inline">code:get_coverage/2</code></a></li><li><a·href="../../../../lib/kernel-10.2.3/doc/html/code.html#reset_coverage/1"><code·class="inline">code:reset_coverage/1</code></a></li><li><a·href="../../../../lib/kernel-10.2.3/doc/html/code.html#get_coverage_mode/0"><code·class="inline">code:get_coverage_mode/0</code></a></li><li><a·href="../../../../lib/kernel-10.2.3/doc/html/code.html#get_coverage_mode/1"><code·class="inline">code:get_coverage_mode/1</code></a></li><li><a·href="../../../../lib/kernel-10.2.3/doc/html/code.html#set_coverage_mode/1"><code·class="inline">code:set_coverage_mode/1</code></a></li></ul><p>Own·Id:·OTP-18856·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/7856"·title="">PR-7856</a></p></li><li><p>The·documentation·has·been·migrated·to·use·Markdown·and·ExDoc.</p><p>Own·Id:·OTP-18955·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8026"·title="">PR-8026</a></p></li><li><p>Improved·the·align·command·in·emacs·mode.</p><p>Own·Id:·OTP-19080·Aux·Id:·<a·href="https://github.com/erlang/otp/pull/8288"·title="">PR-8288</a></p></li></ul><h2·id="tools-3-6"·class="section-heading"> |
| 206 | ··<a·href="#tools-3-6"·class="hover-link"> | 206 | ··<a·href="#tools-3-6"·class="hover-link"> |
| 207 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 207 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 208 | ··</a> | 208 | ··</a> |
| 209 | ··<span·class="text">Tools·3.6</span> | 209 | ··<span·class="text">Tools·3.6</span> |
| 210 | </h2> | 210 | </h2> |
| 211 | <h3·id="improvements-and-new-features-2"·class="section-heading"> | 211 | <h3·id="improvements-and-new-features-2"·class="section-heading"> |
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| 33 | <p><a·href="#all/1"><code·class="inline">make:all/0,1</code></a>·and·<a·href="#files/2"><code·class="inline">make:files/1,2</code></a>·first·looks·for | 33 | <p><a·href="#all/1"><code·class="inline">make:all/0,1</code></a>·and·<a·href="#files/2"><code·class="inline">make:files/1,2</code></a>·first·looks·for |
| 34 | <code·class="inline">{emake,·Emake}</code>·in·options,·then·in·the·current·working·directory·for·a·file | 34 | <code·class="inline">{emake,·Emake}</code>·in·options,·then·in·the·current·working·directory·for·a·file |
| 35 | named·<code·class="inline">Emakefile</code>.·If·present·<code·class="inline">Emake</code>·should·contain·elements·like·this:</p><pre><code·class="text">Modules. | 35 | named·<code·class="inline">Emakefile</code>.·If·present·<code·class="inline">Emake</code>·should·contain·elements·like·this:</p><pre><code·class="text">Modules. |
| 36 | {Modules,Options}.</code></pre><p><code·class="inline">Modules</code>·is·an·atom·or·a·list·of·atoms.·It·can·be</p><ul><li>a·module·name,·for·exmaple,··<code·class="inline">file1</code></li><li>a·module·name·in·another·directory,·for·exmaple,·<code·class="inline">'../foo/file3'</code></li><li>a·set·of·modules·specified·with·a·wildcards,·for·exmaple,·<code·class="inline">'file*'</code></li><li>a·wildcard·indicating·all·modules·in·current·directory,·that·is:·<code·class="inline">'*'</code></li><li>a·list·of·any·of·the·above,·for·exmaple,·<code·class="inline">['file*','../foo/file3','File4']</code></li></ul><p><code·class="inline">Options</code>·is·a·list·of·compiler·options.</p><p><code·class="inline">Emakefile</code>·is·read·from·top·to·bottom.·If·a·module·matches·more·than·one·entry, | 36 | {Modules,Options}.</code></pre><p><code·class="inline">Modules</code>·is·an·atom·or·a·list·of·atoms.·It·can·be</p><ul><li>a·module·name,·for·exmaple,··<code·class="inline">file1</code></li><li>a·module·name·in·another·directory,·for·exmaple,·<code·class="inline">'../foo/file3'</code></li><li>a·set·of·modules·specified·with·a·wildcards,·for·exmaple,·<code·class="inline">'file*'</code></li><li>a·wildcard·indicating·all·modules·in·current·directory,·that·is:·<code·class="inline">'*'</code></li><li>a·list·of·any·of·the·above,·for·exmaple,·<code·class="inline">['file*','../foo/file3','File4']</code></li></ul><p><code·class="inline">Options</code>·is·a·list·of·compiler·options.</p><p><code·class="inline">Emakefile</code>·is·read·from·top·to·bottom.·If·a·module·matches·more·than·one·entry, |
| 37 | the·first·match·is·used.·For·example,·the·following·<code·class="inline">Emakefile</code>·means·that | 37 | the·first·match·is·used.·For·example,·the·following·<code·class="inline">Emakefile</code>·means·that |
| 38 | <code·class="inline">file1</code>·should·be·compiled·with·the·options·<code·class="inline">[debug_info,{i,"../foo"}]</code>,·while | 38 | <code·class="inline">file1</code>·should·be·compiled·with·the·options·<code·class="inline">[debug_info,{i,"../foo"}]</code>,·while |
| 39 | all·other·files·in·the·current·directory·should·be·compiled·with·only·the | 39 | all·other·files·in·the·current·directory·should·be·compiled·with·only·the |
| 40 | <code·class="inline">debug_info</code>·flag.</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id=" | 40 | <code·class="inline">debug_info</code>·flag.</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id="9620335182-1">{</samp><samp·class="ss">'file1'</samp><samp·class="p">,</samp><samp·class="p"·data-group-id="9620335182-2">[</samp><samp·class="ss">debug_info</samp><samp·class="p">,</samp><samp·class="p"·data-group-id="9620335182-3">{</samp><samp·c[·...·truncated·by·diffoscope;·len:·230,·SHA:·0570b03358f1b127f68e24d275658b011e3cada7cd8ce8e92b58b8697a27d0aa·...·]-1">}</samp><samp·class="p">.</samp><samp·class="w"> |
| 41 | </samp><samp·class="p"·data-group-id=" | 41 | </samp><samp·class="p"·data-group-id="9620335182-4">{</samp><samp·class="ss">'*'</samp><samp·class="p">,</samp><samp·class="p"·data-group-id="9620335182-5">[</samp><samp·class="ss">debug_info</samp><samp·class="p"·data-group-id="9620335182-5">]</samp><samp·class="p"·data-group-id="9620[·...·truncated·by·diffoscope;·len:·6,·SHA:·24839c75edf6d68022641c7d6eefc73bfb39e96e4f19151188a1a7413743b01b·...·]-4">}</samp><samp·class="p">.</samp></code></pre><h2·id="module-see-also"·class="section-heading"> |
| 42 | ··<a·href="#module-see-also"·class="hover-link"> | 42 | ··<a·href="#module-see-also"·class="hover-link"> |
| 43 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 43 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 44 | ··</a> | 44 | ··</a> |
| 45 | ··<span·class="text">See·Also</span> | 45 | ··<span·class="text">See·Also</span> |
| 46 | </h2> | 46 | </h2> |
| 47 | <p><a·href="../../../../lib/compiler/doc/html/compile.html">The·Compiler·Application</a></p> | 47 | <p><a·href="../../../../lib/compiler/doc/html/compile.html">The·Compiler·Application</a></p> |
| 48 | ······</section> | 48 | ······</section> |
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| 67 | ··<a·href="#immediate-profiling"·class="hover-link"> | 67 | ··<a·href="#immediate-profiling"·class="hover-link"> |
| 68 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 68 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 69 | ··</a> | 69 | ··</a> |
| 70 | ··<span·class="text">Immediate·profiling</span> | 70 | ··<span·class="text">Immediate·profiling</span> |
| 71 | </h2> | 71 | </h2> |
| 72 | <p>It·is·also·possible·to·trace·immediately·into·the·profiling·process·that·creates | 72 | <p>It·is·also·possible·to·trace·immediately·into·the·profiling·process·that·creates |
| 73 | the·raw·profile·data,·that·is·to·short·circuit·the·tracing·and·profiling·steps | 73 | the·raw·profile·data,·that·is·to·short·circuit·the·tracing·and·profiling·steps |
| 74 | so·that·the·filesystem·is·not·used·for·tracing.</p><p>Do·something·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 74 | so·that·the·filesystem·is·not·used·for·tracing.</p><p>Do·something·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="3890260745-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tracer</span><span·class="p"·data-group-id="3890260745-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·[·...·truncated·by·diffoscope;·len:·201,·SHA:·6727bab903426e51c74ab97e26f76e9cb1d58feb3103b095cfc69d012191bafb·...·]-2">)</span><span·class="p">,</span><span·class="w"> |
| 75 | </span><span·class="nc">fprof</span><span·class="p">:</span><span·class="nf">trace</span><span·class="p"·data-group-id=" | 75 | </span><span·class="nc">fprof</span><span·class="p">:</span><span·class="nf">trace</span><span·class="p"·data-group-id="3890260745-3">(</span><span·class="p"·data-group-id="3890260745-4">[</span><span·class="ss">start</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3890260745-5">{</span><span·class="ss">tracer</span><span·class="p">,</sp[·...·truncated·by·diffoscope;·len:·203,·SHA:·165b251c138f8ae71a8d0985e4ce52da2eea1a8afa158d94c2a0ba7d8a3d1b3e·...·]-3">)</span><span·class="p">,</span><span·class="w"> |
| 76 | </span><span·class="c1">%%·Run·code·to·profile</span><span·class="w"> | 76 | </span><span·class="c1">%%·Run·code·to·profile</span><span·class="w"> |
| 77 | </span><span·class="nc">fprof</span><span·class="p">:</span><span·class="nf">trace</span><span·class="p"·data-group-id=" | 77 | </span><span·class="nc">fprof</span><span·class="p">:</span><span·class="nf">trace</span><span·class="p"·data-group-id="3890260745-6">(</span><span·class="ss">stop</span><span·class="p"·data-group-id="3890260745-6">)</span><span·class="p">;</span></code></pre><p>This·puts·less·load·on·the·filesystem,·but·much·more·load·on·the·Erlang·runtime |
| 78 | system.</p> | 78 | system.</p> |
| 79 | ··</body> | 79 | ··</body> |
| 80 | </html> | 80 | </html> |
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| 453 | ······<div·class="specs"> | 453 | ······<div·class="specs"> |
| 454 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·analyse(Mod,·Limit)·->·ModAnalysis·::·<a·href="#t:mod_analysis/0">mod_analysis</a>() | 454 | ··········<pre·translate="no"><span·class="attribute">-spec</span>·analyse(Mod,·Limit)·->·ModAnalysis·::·<a·href="#t:mod_analysis/0">mod_analysis</a>() |
| 455 | ·················when·Mod·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:module/0">module</a>(),·Limit·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:non_neg_integer/0">non_neg_integer</a>().</pre> | 455 | ·················when·Mod·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:module/0">module</a>(),·Limit·::·<a·href="../../../../lib/../erts/doc/html/erlang.html#t:non_neg_integer/0">non_neg_integer</a>().</pre> |
| 456 | ······</div> | 456 | ······</div> |
| 457 | <p>Collects·and·analyses·all·call·counters·for·module·<code·class="inline">Module</code>.</p><p>This·function·returns:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id="0 | 457 | <p>Collects·and·analyses·all·call·counters·for·module·<code·class="inline">Module</code>.</p><p>This·function·returns:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="p"·data-group-id="0231613670-1">{</samp><samp·class="n">Module</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">ModuleCount</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="n">FuncAnalysisList</samp><samp·class="p"·data-group-id="023161[·...·truncated·by·diffoscope;·len:·650,·SHA:·308f03562c350d6c86efc4991e20d8d8ff8b31f56bdf6d4faa9c173d574249b2·...·]-1">}</samp></code></pre><p>If·call·counters·are·still·running·while·<code·class="inline">analyse/0,1,2</code>·is·executing,·the·result |
| 458 | could·be·inconsistent.·This·happens·if·the·process·executing·<code·class="inline">analyse/0,1,2</code> | 458 | could·be·inconsistent.·This·happens·if·the·process·executing·<code·class="inline">analyse/0,1,2</code> |
| 459 | is·scheduled·out·so·some·other·process·can·increment·the·counters·that·are | 459 | is·scheduled·out·so·some·other·process·can·increment·the·counters·that·are |
| 460 | being·analysed.·Calling·<a·href="#pause/0"><code·class="inline">pause()</code></a>·before·analysing·takes·care·of | 460 | being·analysed.·Calling·<a·href="#pause/0"><code·class="inline">pause()</code></a>·before·analysing·takes·care·of |
| 461 | that·problem.</p><p>All·functions·with·a·<code·class="inline">FuncCallCount</code>·lower·than·<code·class="inline">Limit</code>·are·excluded·from | 461 | that·problem.</p><p>All·functions·with·a·<code·class="inline">FuncCallCount</code>·lower·than·<code·class="inline">Limit</code>·are·excluded·from |
| 462 | <code·class="inline">FuncAnalysisList</code>.·They·are·still·included·in·<code·class="inline">ModCallCount</code>,·though.</p> | 462 | <code·class="inline">FuncAnalysisList</code>.·They·are·still·included·in·<code·class="inline">ModCallCount</code>,·though.</p> |
| 463 | ··</section> | 463 | ··</section> |
| 464 | </section> | 464 | </section> |
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| 1386 | ······</div> | 1386 | ······</div> |
| 1387 | <p>Analyzes·one·or·more·modules·as·specified·by·<code·class="inline">Arg</code>.</p><p>If·<code·class="inline">Arg</code>·is·one·of·the·values·in·<a·href="#t:analysis/0"><code·class="inline">analysis()</code></a>,·this | 1387 | <p>Analyzes·one·or·more·modules·as·specified·by·<code·class="inline">Arg</code>.</p><p>If·<code·class="inline">Arg</code>·is·one·of·the·values·in·<a·href="#t:analysis/0"><code·class="inline">analysis()</code></a>,·this |
| 1388 | call·is·equivalent·to·<a·href="#analyse/3"><code·class="inline">analyse('_',·Arg,·function)</code></a>.</p><p>If·<code·class="inline">Arg</code>·is·one·of·the·values·in·<a·href="#t:level/0"><code·class="inline">level()</code></a>,·this | 1388 | call·is·equivalent·to·<a·href="#analyse/3"><code·class="inline">analyse('_',·Arg,·function)</code></a>.</p><p>If·<code·class="inline">Arg</code>·is·one·of·the·values·in·<a·href="#t:level/0"><code·class="inline">level()</code></a>,·this |
| 1389 | call·is·equivalent·to·<a·href="#analyse/3"><code·class="inline">analyse('_',·coverage,·Arg)</code></a>.</p><p>Otherwise·<code·class="inline">Arg</code>·is·assumed·to·be·a·module·name,·and·this·call·is·equivalent | 1389 | call·is·equivalent·to·<a·href="#analyse/3"><code·class="inline">analyse('_',·coverage,·Arg)</code></a>.</p><p>Otherwise·<code·class="inline">Arg</code>·is·assumed·to·be·a·module·name,·and·this·call·is·equivalent |
| 1390 | to·<a·href="#analyse/3"><code·class="inline">analyse(Arg,·coverage,·function)</code></a>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>To·analyze·a·module·whose·name·overlaps·with·one·the·values·in | 1390 | to·<a·href="#analyse/3"><code·class="inline">analyse(Arg,·coverage,·function)</code></a>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>To·analyze·a·module·whose·name·overlaps·with·one·the·values·in |
| 1391 | <a·href="#t:analysis/0"><code·class="inline">analysis()</code></a>·or·<a·href="#t:level/0"><code·class="inline">level()</code></a>,·the·module | 1391 | <a·href="#t:analysis/0"><code·class="inline">analysis()</code></a>·or·<a·href="#t:level/0"><code·class="inline">level()</code></a>,·the·module |
| 1392 | name·has·to·be·in·a·list.·For·example,·to·analyze·a·module·named·<code·class="inline">calls</code>:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nc">cover</samp><samp·class="p">:</samp><samp·class="nf">analyse</samp><samp·class="p"·data-group-id=" | 1392 | name·has·to·be·in·a·list.·For·example,·to·analyze·a·module·named·<code·class="inline">calls</code>:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nc">cover</samp><samp·class="p">:</samp><samp·class="nf">analyse</samp><samp·class="p"·data-group-id="1864539373-1">(</samp><samp·class="p"·data-group-id="1864539373-2">[</samp><samp·class="ss">calls</samp><samp·class="p"·data-group-id="1864539373-2">]</samp><samp·class="p"·data-group-id="1864539373-1">)</samp><samp·class="p">.</samp></code></pre></section> |
| 1393 | ··</section> | 1393 | ··</section> |
| 1394 | </section> | 1394 | </section> |
| 1395 | <section·class="detail"·id="analyse/2"> | 1395 | <section·class="detail"·id="analyse/2"> |
| 1396 | ··<div·class="detail-header"> | 1396 | ··<div·class="detail-header"> |
| 1397 | ····<a·href="#analyse/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1397 | ····<a·href="#analyse/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1398 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1398 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 1426 | <p>Analyzes·one·or·more·modules·as·specified·by·<code·class="inline">Arg1</code>·and·<code·class="inline">Arg2</code>.</p><p>If·<code·class="inline">Arg1</code>·is·one·of·the·values·in·<a·href="#t:analysis/0"><code·class="inline">analysis()</code></a>·and | 1426 | <p>Analyzes·one·or·more·modules·as·specified·by·<code·class="inline">Arg1</code>·and·<code·class="inline">Arg2</code>.</p><p>If·<code·class="inline">Arg1</code>·is·one·of·the·values·in·<a·href="#t:analysis/0"><code·class="inline">analysis()</code></a>·and |
| 1427 | <code·class="inline">Arg2</code>·is·one·of·the·values·in·<a·href="#t:level/0"><code·class="inline">level()</code></a>,·this | 1427 | <code·class="inline">Arg2</code>·is·one·of·the·values·in·<a·href="#t:level/0"><code·class="inline">level()</code></a>,·this |
| 1428 | call·is·equivalent·to·<a·href="#analyse/3"><code·class="inline">analyse('_',·Arg1,·Arg2)</code></a>.</p><p>If·<code·class="inline">Arg2</code>·is·one·of·the·values·in·<a·href="#t:analysis/0"><code·class="inline">analysis()</code></a>, | 1428 | call·is·equivalent·to·<a·href="#analyse/3"><code·class="inline">analyse('_',·Arg1,·Arg2)</code></a>.</p><p>If·<code·class="inline">Arg2</code>·is·one·of·the·values·in·<a·href="#t:analysis/0"><code·class="inline">analysis()</code></a>, |
| 1429 | <code·class="inline">Arg1</code>·is·assumed·to·be·a·module·and·this·call·is·equivalent·to | 1429 | <code·class="inline">Arg1</code>·is·assumed·to·be·a·module·and·this·call·is·equivalent·to |
| 1430 | <a·href="#analyse/3"><code·class="inline">analyse(Arg1,·Arg2,·function)</code></a>.</p><p>If·<code·class="inline">Arg2</code>·is·one·of·the·values·in·<a·href="#t:level/0"><code·class="inline">level()</code></a>,·<code·class="inline">Arg1</code>·is | 1430 | <a·href="#analyse/3"><code·class="inline">analyse(Arg1,·Arg2,·function)</code></a>.</p><p>If·<code·class="inline">Arg2</code>·is·one·of·the·values·in·<a·href="#t:level/0"><code·class="inline">level()</code></a>,·<code·class="inline">Arg1</code>·is |
| 1431 | assumed·to·be·a·module·and·this·call·is·equivalent·to·<a·href="#analyse/3"><code·class="inline">analyse(Arg1,·coverage,·Arg2)</code></a>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>To·analyze·a·module·whose·name·overlaps·with·one·of·the·values·in | 1431 | assumed·to·be·a·module·and·this·call·is·equivalent·to·<a·href="#analyse/3"><code·class="inline">analyse(Arg1,·coverage,·Arg2)</code></a>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>To·analyze·a·module·whose·name·overlaps·with·one·of·the·values·in |
| 1432 | <a·href="#t:analysis/0"><code·class="inline">analysis()</code></a>,·the·module·name·needs·to·be·in·a | 1432 | <a·href="#t:analysis/0"><code·class="inline">analysis()</code></a>,·the·module·name·needs·to·be·in·a |
| 1433 | list.·For·example,·to·analyze·a·module·named·<code·class="inline">calls</code>:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nc">cover</samp><samp·class="p">:</samp><samp·class="nf">analyse</samp><samp·class="p"·data-group-id=" | 1433 | list.·For·example,·to·analyze·a·module·named·<code·class="inline">calls</code>:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nc">cover</samp><samp·class="p">:</samp><samp·class="nf">analyse</samp><samp·class="p"·data-group-id="0925359795-1">(</samp><samp·class="p"·data-group-id="0925359795-2">[</samp><samp·class="ss">calls</samp><samp·class="p"·data-group-id="0925359795-2">]</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="ss">function</samp><samp·class="p"·dat[·...·truncated·by·diffoscope;·len:·21,·SHA:·d1bfb761ec866526a922da26d4bbb33a1b75b1ad261b67e38cc3ecb19b301f59·...·]5-1">)</samp><samp·class="p">.</samp></code></pre></section> |
| 1434 | ··</section> | 1434 | ··</section> |
| 1435 | </section> | 1435 | </section> |
| 1436 | <section·class="detail"·id="analyse/3"> | 1436 | <section·class="detail"·id="analyse/3"> |
| 1437 | ··<div·class="detail-header"> | 1437 | ··<div·class="detail-header"> |
| 1438 | ····<a·href="#analyse/3"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1438 | ····<a·href="#analyse/3"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1439 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1439 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
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| 1529 | ······</div> | 1529 | ······</div> |
| 1530 | <p>If·<code·class="inline">Arg</code>·is·a·list·of·<a·href="#t:analyse_option/0"><code·class="inline">analyse_option()</code></a> | 1530 | <p>If·<code·class="inline">Arg</code>·is·a·list·of·<a·href="#t:analyse_option/0"><code·class="inline">analyse_option()</code></a> |
| 1531 | options,·this·call·is·equivalent·to·<a·href="#analyse_to_file/2"><code·class="inline">analyse_to_file('_',·Arg)</code></a>.</p><p>Otherwise·<code·class="inline">Arg</code>·is·assumed·to·be·a·module,·and·this·call·is·equivalent·to | 1531 | options,·this·call·is·equivalent·to·<a·href="#analyse_to_file/2"><code·class="inline">analyse_to_file('_',·Arg)</code></a>.</p><p>Otherwise·<code·class="inline">Arg</code>·is·assumed·to·be·a·module,·and·this·call·is·equivalent·to |
| 1532 | <a·href="#analyse_to_file/2"><code·class="inline">analyse_to_file(Arg,·[])</code></a>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>To·analyze·a·module·of·the·name·<code·class="inline">html</code>·(which·overlaps·with·an·option | 1532 | <a·href="#analyse_to_file/2"><code·class="inline">analyse_to_file(Arg,·[])</code></a>.</p><section·role="note"·class="admonition·info"><h4·class="admonition-title·info">Note</h4><p>To·analyze·a·module·of·the·name·<code·class="inline">html</code>·(which·overlaps·with·an·option |
| 1533 | in·<a·href="#t:analyse_option/0"><code·class="inline">analyse_option()</code></a>),·it·is·necessary·to | 1533 | in·<a·href="#t:analyse_option/0"><code·class="inline">analyse_option()</code></a>),·it·is·necessary·to |
| 1534 | use·<a·href="#analyse_to_file/2"><code·class="inline">cover:analyse_to_file/2</code></a>:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nc">cover</samp><samp·class="p">:</samp><samp·class="nf">analyse_to_file</samp><samp·class="p"·data-group-id=" | 1534 | use·<a·href="#analyse_to_file/2"><code·class="inline">cover:analyse_to_file/2</code></a>:</p><pre><code·class="makeup·erlang"·translate="no"><samp·class="nc">cover</samp><samp·class="p">:</samp><samp·class="nf">analyse_to_file</samp><samp·class="p"·data-group-id="8679695936-1">(</samp><samp·class="p"·data-group-id="8679695936-2">[</samp><samp·class="ss">html</samp><samp·class="p"·data-group-id="8679695936-2">]</samp><samp·class="p">,</samp><samp·class="w">·</samp><samp·class="p"·data-group-id="8679695936-3">[</samp[·...·truncated·by·diffoscope;·len:·95,·SHA:·c3f92dbef48af0328fecd13f197f34865591e1fcd6f7755b90be487f1fbaed21·...·]-1">)</samp><samp·class="p">.</samp></code></pre></section> |
| 1535 | ··</section> | 1535 | ··</section> |
| 1536 | </section> | 1536 | </section> |
| 1537 | <section·class="detail"·id="analyse_to_file/2"> | 1537 | <section·class="detail"·id="analyse_to_file/2"> |
| 1538 | ··<div·class="detail-header"> | 1538 | ··<div·class="detail-header"> |
| 1539 | ····<a·href="#analyse_to_file/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> | 1539 | ····<a·href="#analyse_to_file/2"·class="detail-link"·data-no-tooltip·aria-label="Link·to·this·function"> |
| 1540 | ······<i·class="ri-link-m"·aria-hidden="true"></i> | 1540 | ······<i·class="ri-link-m"·aria-hidden="true"></i> |
| Offset 156, 199 lines modified | Offset 156, 199 lines modified | ||
| 156 | The·<code·class="inline">tprof</code>·results·will·probably·be·incorrect·when·the·profiled·code·was | 156 | The·<code·class="inline">tprof</code>·results·will·probably·be·incorrect·when·the·profiled·code·was |
| 157 | reloading·during·a·profiling·session.</p></section><h2·id="module-ad-hoc-profiling"·class="section-heading"> | 157 | reloading·during·a·profiling·session.</p></section><h2·id="module-ad-hoc-profiling"·class="section-heading"> |
| 158 | ··<a·href="#module-ad-hoc-profiling"·class="hover-link"> | 158 | ··<a·href="#module-ad-hoc-profiling"·class="hover-link"> |
| 159 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 159 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 160 | ··</a> | 160 | ··</a> |
| 161 | ··<span·class="text">Ad-hoc·profiling</span> | 161 | ··<span·class="text">Ad-hoc·profiling</span> |
| 162 | </h2> | 162 | </h2> |
| 163 | <p>Ad-hoc·profiling·is·convenient·for·profiling·a·single·function·call.</p><p>For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">tprof</span><span·class="p">:</span><span·class="nf">profile</span><span·class="p"·data-group-id=" | 163 | <p>Ad-hoc·profiling·is·convenient·for·profiling·a·single·function·call.</p><p>For·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">tprof</span><span·class="p">:</span><span·class="nf">profile</span><span·class="p"·data-group-id="9659236265-1">(</span><span·class="ss">lists</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">seq</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="9659236265-2">[</span><span·class="mi">1</span><spa[·...·truncated·by·diffoscope;·len:·458,·SHA:·ab4c64d6185c6edb499b274d7c65817015eb71a2aa66ca0059422222976e6454·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 164 | </span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Process</span><span·class="w">·</span><span·class="o"><</span><span·class="mf">0.92</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">··</span><span·class="o">--</span><span·class="w">··</span><span·class="mf">100.00</span><span·class="c1">%·of·total·***·</span><span·class="w"> | 164 | </span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Process</span><span·class="w">·</span><span·class="o"><</span><span·class="mf">0.92</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">··</span><span·class="o">--</span><span·class="w">··</span><span·class="mf">100.00</span><span·class="c1">%·of·total·***·</span><span·class="w"> |
| 165 | </span><span·class="n">FUNCTION</span><span·class="w">··········</span><span·class="n">CALLS</span><span·class="w">··</span><span·class="n">WORDS</span><span·class="w">··</span><span·class="n">PER</span><span·class="w">·</span><span·class="n">CALL</span><span·class="w">··</span><span·class="p"·data-group-id=" | 165 | </span><span·class="n">FUNCTION</span><span·class="w">··········</span><span·class="n">CALLS</span><span·class="w">··</span><span·class="n">WORDS</span><span·class="w">··</span><span·class="n">PER</span><span·class="w">·</span><span·class="n">CALL</span><span·class="w">··</span><span·class="p"·data-group-id="9659236265-4">[</span><span·class="w">·····</span><span·class="c1">%]</span><span·class="w"> |
| 166 | </span><span·class="nc">lists</span><span·class="p">:</span><span·class="ss">seq_loop</span><span·class="p">/</span><span·class="mi">3</span><span·class="w">······</span><span·class="mi">5</span><span·class="w">·····</span><span·class="mi">32</span><span·class="w">······</span><span·class="mf">6.40</span><span·class="w">··</span><span·class="p"·data-group-id=" | 166 | </span><span·class="nc">lists</span><span·class="p">:</span><span·class="ss">seq_loop</span><span·class="p">/</span><span·class="mi">3</span><span·class="w">······</span><span·class="mi">5</span><span·class="w">·····</span><span·class="mi">32</span><span·class="w">······</span><span·class="mf">6.40</span><span·class="w">··</span><span·class="p"·data-group-id="9659236265-5">[</span><span·class="mf">100.00</span><span·class="p"·data-group-id="9659236265-5">]</span><span·class="w"> |
| 167 | ····························</span><span·class="mi">32</span><span·class="w">············</span><span·class="p"·data-group-id=" | 167 | ····························</span><span·class="mi">32</span><span·class="w">············</span><span·class="p"·data-group-id="9659236265-6">[</span><span·class="w">·</span><span·class="mf">100.0</span><span·class="p"·data-group-id="9659236265-6">]</span><span·class="w"> |
| 168 | </span><span·class="ss">ok</span></code></pre><p>By·default·tracing·is·enabled·for·all·functions·in·all·modules.·When·funs | 168 | </span><span·class="ss">ok</span></code></pre><p>By·default·tracing·is·enabled·for·all·functions·in·all·modules.·When·funs |
| 169 | are·created·in·the·interactive·shell,·parts·of·shell·code·are·also·traced:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">tprof</span><span·class="p">:</span><span·class="nf">profile</span><span·class="p"·data-group-id=" | 169 | are·created·in·the·interactive·shell,·parts·of·shell·code·are·also·traced:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">tprof</span><span·class="p">:</span><span·class="nf">profile</span><span·class="p"·data-group-id="9432468939-1">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="9432468939-2">(</span><span·class="p"·data-group-id="9432468939-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nc">lists</s[·...·truncated·by·diffoscope;·len:·645,·SHA:·e75f629a86c13354dc6bc1789785d32c5ae88a6072d6d36d69b4d6e524f768fc·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 170 | </span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Process</span><span·class="w">·</span><span·class="o"><</span><span·class="mf">0.95</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">··</span><span·class="o">--</span><span·class="w">··</span><span·class="mf">100.00</span><span·class="c1">%·of·total·***·</span><span·class="w"> | 170 | </span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Process</span><span·class="w">·</span><span·class="o"><</span><span·class="mf">0.95</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">··</span><span·class="o">--</span><span·class="w">··</span><span·class="mf">100.00</span><span·class="c1">%·of·total·***·</span><span·class="w"> |
| 171 | </span><span·class="n">FUNCTION</span><span·class="w">···················</span><span·class="n">CALLS</span><span·class="w">··</span><span·class="n">WORDS</span><span·class="w">··</span><span·class="n">PER</span><span·class="w">·</span><span·class="n">CALL</span><span·class="w">··</span><span·class="p"·data-group-id=" | 171 | </span><span·class="n">FUNCTION</span><span·class="w">···················</span><span·class="n">CALLS</span><span·class="w">··</span><span·class="n">WORDS</span><span·class="w">··</span><span·class="n">PER</span><span·class="w">·</span><span·class="n">CALL</span><span·class="w">··</span><span·class="p"·data-group-id="9432468939-5">[</span><span·class="w">····</span><span·class="c1">%]</span><span·class="w"> |
| 172 | </span><span·class="nc">erl_eval</span><span·class="p">:</span><span·class="ss">do_apply</span><span·class="p">/</span><span·class="mi">7</span><span·class="w">············</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">3</span><span·class="w">······</span><span·class="mf">3.00</span><span·class="w">··</span><span·class="p"·data-group-id=" | 172 | </span><span·class="nc">erl_eval</span><span·class="p">:</span><span·class="ss">do_apply</span><span·class="p">/</span><span·class="mi">7</span><span·class="w">············</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">3</span><span·class="w">······</span><span·class="mf">3.00</span><span·class="w">··</span><span·class="p"·data-group-id="9432468939-6">[</span><span·class="w">·</span><span·class="mf">3.61</span><span·class="p"·data-group-id="9432468939-6">]</span><span·class="w"> |
| 173 | </span><span·class="nc">erl_eval</span><span·class="p">:</span><span·class="ss">match_list</span><span·class="p">/</span><span·class="mi">6</span><span·class="w">··········</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">3</span><span·class="w">······</span><span·class="mf">3.00</span><span·class="w">··</span><span·class="p"·data-group-id=" | 173 | </span><span·class="nc">erl_eval</span><span·class="p">:</span><span·class="ss">match_list</span><span·class="p">/</span><span·class="mi">6</span><span·class="w">··········</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">3</span><span·class="w">······</span><span·class="mf">3.00</span><span·class="w">··</span><span·class="p"·data-group-id="9432468939-7">[</span><span·class="w">·</span><span·class="mf">3.61</span><span·class="p"·data-group-id="9432468939-7">]</span><span·class="w"> |
| 174 | </span><span·class="nc">lists</span><span·class="p">:</span><span·class="ss">reverse</span><span·class="p">/</span><span·class="mi">1</span><span·class="w">················</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">4</span><span·class="w">······</span><span·class="mf">4.00</span><span·class="w">··</span><span·class="p"·data-group-id=" | 174 | </span><span·class="nc">lists</span><span·class="p">:</span><span·class="ss">reverse</span><span·class="p">/</span><span·class="mi">1</span><span·class="w">················</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">4</span><span·class="w">······</span><span·class="mf">4.00</span><span·class="w">··</span><span·class="p"·data-group-id="9432468939-8">[</span><span·class="w">·</span><span·class="mf">4.82</span><span·class="p"·data-group-id="9432468939-8">]</span><span·class="w"> |
| 175 | </span><span·class="nc">erl_eval</span><span·class="p">:</span><span·class="ss">expr_list</span><span·class="p">/</span><span·class="mi">7</span><span·class="w">···········</span><span·class="mi">3</span><span·class="w">······</span><span·class="mi">7</span><span·class="w">······</span><span·class="mf">2.33</span><span·class="w">··</span><span·class="p"·data-group-id=" | 175 | </span><span·class="nc">erl_eval</span><span·class="p">:</span><span·class="ss">expr_list</span><span·class="p">/</span><span·class="mi">7</span><span·class="w">···········</span><span·class="mi">3</span><span·class="w">······</span><span·class="mi">7</span><span·class="w">······</span><span·class="mf">2.33</span><span·class="w">··</span><span·class="p"·data-group-id="9432468939-9">[</span><span·class="w">·</span><span·class="mf">8.43</span><span·class="p"·data-group-id="9432468939-9">]</span><span·class="w"> |
| 176 | </span><span·class="nc">erl_eval</span><span·class="p">:</span><span·class="ss">ret_expr</span><span·class="p">/</span><span·class="mi">3</span><span·class="w">············</span><span·class="mi">4</span><span·class="w">·····</span><span·class="mi">16</span><span·class="w">······</span><span·class="mf">4.00</span><span·class="w">··</span><span·class="p"·data-group-id=" | 176 | </span><span·class="nc">erl_eval</span><span·class="p">:</span><span·class="ss">ret_expr</span><span·class="p">/</span><span·class="mi">3</span><span·class="w">············</span><span·class="mi">4</span><span·class="w">·····</span><span·class="mi">16</span><span·class="w">······</span><span·class="mf">4.00</span><span·class="w">··</span><span·class="p"·data-group-id="9432468939-10">[</span><span·class="mf">19.28</span><span·class="p"·data-group-id="9432468939-10">]</span><span·class="w"> |
| 177 | </span><span·class="nc">erl_eval</span><span·class="p">:</span><span·class="ss">merge_bindings</span><span·class="p">/</span><span·class="mi">4</span><span·class="w">······</span><span·class="mi">3</span><span·class="w">·····</span><span·class="mi">18</span><span·class="w">······</span><span·class="mf">6.00</span><span·class="w">··</span><span·class="p"·data-group-id=" | 177 | </span><span·class="nc">erl_eval</span><span·class="p">:</span><span·class="ss">merge_bindings</span><span·class="p">/</span><span·class="mi">4</span><span·class="w">······</span><span·class="mi">3</span><span·class="w">·····</span><span·class="mi">18</span><span·class="w">······</span><span·class="mf">6.00</span><span·class="w">··</span><span·class="p"·data-group-id="9432468939-11">[</span><span·class="mf">21.69</span><span·class="p"·data-group-id="9432468939-11">]</span><span·class="w"> |
| 178 | </span><span·class="nc">lists</span><span·class="p">:</span><span·class="ss">seq_loop</span><span·class="p">/</span><span·class="mi">3</span><span·class="w">···············</span><span·class="mi">5</span><span·class="w">·····</span><span·class="mi">32</span><span·class="w">······</span><span·class="mf">6.40</span><span·class="w">··</span><span·class="p"·data-group-id=" | 178 | </span><span·class="nc">lists</span><span·class="p">:</span><span·class="ss">seq_loop</span><span·class="p">/</span><span·class="mi">3</span><span·class="w">···············</span><span·class="mi">5</span><span·class="w">·····</span><span·class="mi">32</span><span·class="w">······</span><span·class="mf">6.40</span><span·class="w">··</span><span·class="p"·data-group-id="9432468939-12">[</span><span·class="mf">38.55</span><span·class="p"·data-group-id="9432468939-12">]</span><span·class="w"> |
| 179 | ·····································</span><span·class="mi">83</span><span·class="w">············</span><span·class="p"·data-group-id=" | 179 | ·····································</span><span·class="mi">83</span><span·class="w">············</span><span·class="p"·data-group-id="9432468939-13">[</span><span·class="mf">100.0</span><span·class="p"·data-group-id="9432468939-13">]</span><span·class="w"> |
| 180 | </span><span·class="ss">ok</span></code></pre><p>However,·it·is·possible·to·limit·the·trace·to·specific·functions·or·modules:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">tprof</span><span·class="p">:</span><span·class="nf">profile</span><span·class="p"·data-group-id="8 | 180 | </span><span·class="ss">ok</span></code></pre><p>However,·it·is·possible·to·limit·the·trace·to·specific·functions·or·modules:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">tprof</span><span·class="p">:</span><span·class="nf">profile</span><span·class="p"·data-group-id="8916256451-1">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="8916256451-2">(</span><span·class="p"·data-group-id="8916256451-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nc">lists</sp[·...·truncated·by·diffoscope;·len:·247,·SHA:·51d0bea58c7878fa7dd69529d29fbbb24f91a4eb0a623c1f4c82a97a83c1f2a8·...·]-3">)</span><span·class="w">·</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 181 | ·················</span><span·class="p"·data-group-id="8 | 181 | ·················</span><span·class="p"·data-group-id="8916256451-4">#{</span><span·class="ss">type</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">call_memory</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">pattern</span><span·class="w">[·...·truncated·by·diffoscope;·len:·558,·SHA:·1ea75da18b23c4d9d8ce2c025c2c383dc200398bf97d5b6c50fbf9d5b0cdc8e7·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 182 | </span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Process</span><span·class="w">·</span><span·class="o"><</span><span·class="mf">0.98</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">··</span><span·class="o">--</span><span·class="w">··</span><span·class="mf">100.00</span><span·class="c1">%·of·total·***·</span><span·class="w"> | 182 | </span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Process</span><span·class="w">·</span><span·class="o"><</span><span·class="mf">0.98</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">··</span><span·class="o">--</span><span·class="w">··</span><span·class="mf">100.00</span><span·class="c1">%·of·total·***·</span><span·class="w"> |
| 183 | </span><span·class="n">FUNCTION</span><span·class="w">··········</span><span·class="n">CALLS</span><span·class="w">··</span><span·class="n">WORDS</span><span·class="w">··</span><span·class="n">PER</span><span·class="w">·</span><span·class="n">CALL</span><span·class="w">··</span><span·class="p"·data-group-id="8 | 183 | </span><span·class="n">FUNCTION</span><span·class="w">··········</span><span·class="n">CALLS</span><span·class="w">··</span><span·class="n">WORDS</span><span·class="w">··</span><span·class="n">PER</span><span·class="w">·</span><span·class="n">CALL</span><span·class="w">··</span><span·class="p"·data-group-id="8916256451-7">[</span><span·class="w">·····</span><span·class="c1">%]</span><span·class="w"> |
| 184 | </span><span·class="nc">lists</span><span·class="p">:</span><span·class="ss">seq_loop</span><span·class="p">/</span><span·class="mi">3</span><span·class="w">······</span><span·class="mi">5</span><span·class="w">·····</span><span·class="mi">32</span><span·class="w">······</span><span·class="mf">6.40</span><span·class="w">··</span><span·class="p"·data-group-id="8 | 184 | </span><span·class="nc">lists</span><span·class="p">:</span><span·class="ss">seq_loop</span><span·class="p">/</span><span·class="mi">3</span><span·class="w">······</span><span·class="mi">5</span><span·class="w">·····</span><span·class="mi">32</span><span·class="w">······</span><span·class="mf">6.40</span><span·class="w">··</span><span·class="p"·data-group-id="8916256451-8">[</span><span·class="mf">100.00</span><span·class="p"·data-group-id="8916256451-8">]</span><span·class="w"> |
| 185 | ····························</span><span·class="mi">32</span><span·class="w">············</span><span·class="p"·data-group-id="8 | 185 | ····························</span><span·class="mi">32</span><span·class="w">············</span><span·class="p"·data-group-id="8916256451-9">[</span><span·class="w">·</span><span·class="mf">100.0</span><span·class="p"·data-group-id="8916256451-9">]</span><span·class="w"> |
| 186 | </span><span·class="ss">ok</span></code></pre><p>Ad-hoc·profiling·results·can·be·printed·in·a·few·different·ways.·The·following | 186 | </span><span·class="ss">ok</span></code></pre><p>Ad-hoc·profiling·results·can·be·printed·in·a·few·different·ways.·The·following |
| 187 | examples·use·the·<code·class="inline">test</code>·module·defined·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="4832256069-1">(</span><span·class="ss">test</span><span·class="p"·data-group-id="4832256069-1">)</span><span·class="p">.</span><span·class="w"> | ||
| 188 | 187 | examples·use·the·<code·class="inline">test</code>·module·defined·like·this:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="9099001552-1">(</span><span·class="ss">test<[·...·truncated·by·diffoscope;·len:·49,·SHA:·e003d905fd73d99c6372f159a316c9743bd801246a1c56dd4c114941f424b4d8·...·]">)</span><span·class="p">.</span><span·class="w"> | |
| 188 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="9099001552-2">(</span><span·class="p"·data-group-id="9099001552-3">[</span><span·class="ss">test_spawn</span><span·class="p">/</span><span·class="mi">0</span><span·class="p"·data-group-id="9099001552-3">]</span><span·class="p"·data-group-id="9099001552-2">)</span><span·class="p">.</span><span·class="w"> | ||
| 189 | </span><span·class="nf">test_spawn</span><span·class="p"·data-group-id=" | 189 | </span><span·class="nf">test_spawn</span><span·class="p"·data-group-id="9099001552-4">(</span><span·class="p"·data-group-id="9099001552-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 190 | ····</span><span·class="p"·data-group-id=" | 190 | ····</span><span·class="p"·data-group-id="9099001552-5">{</span><span·class="n">Pid</span><span·class="p">,</span><span·class="w">·</span><span·class="n">MRef</span><span·class="p"·data-group-id="9099001552-5">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·cl[·...·truncated·by·diffoscope;·len:·691,·SHA:·ad5c9fbf1dab817fed9824c34b0d29dc0bdef431a7bbadef9119bb8a5c0c83d3·...·]-6">)</span><span·class="p">,</span><span·class="w"> |
| 191 | ····</span><span·class="k">receive</span><span·class="w"> | 191 | ····</span><span·class="k">receive</span><span·class="w"> |
| 192 | ········</span><span·class="p"·data-group-id=" | 192 | ········</span><span·class="p"·data-group-id="9099001552-9">{</span><span·class="ss">'DOWN'</span><span·class="p">,</span><span·class="w">·</span><span·class="n">MRef</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">process</span><span·class="p">,</span><span·class="w">·<[·...·truncated·by·diffoscope;·len:·151,·SHA:·409a93e827242b5e9dafb898563380833d25b0ddd0beae975780c5b3d6cfd20b·...·]-9">}</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 193 | ············</span><span·class="ss">done</span><span·class="w"> | 193 | ············</span><span·class="ss">done</span><span·class="w"> |
| 194 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>By·default·per-process·statistics·is·shown:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">tprof</span><span·class="p">:</span><span·class="nf">profile</span><span·class="p"·data-group-id=" | 194 | ····</span><span·class="k">end</span><span·class="p">.</span></code></pre><p>By·default·per-process·statistics·is·shown:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">tprof</span><span·class="p">:</span><span·class="nf">profile</span><span·class="p"·data-group-id="6936152297-1">(</span><span·class="ss">test</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">test_spawn</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6936152297-2">[</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·365,·SHA:·7ff3573c6bd7ad72a507e3cebc70992221c22c397a06db59595b26ff24c7821b·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 195 | </span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Process</span><span·class="w">·</span><span·class="o"><</span><span·class="mf">0.176</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">····</span><span·class="o">--</span><span·class="w">·</span><span·class="mf">23.66</span><span·class="w">·</span><span·class="c1">%·of·total·allocations·***</span><span·class="w"> | 195 | </span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Process</span><span·class="w">·</span><span·class="o"><</span><span·class="mf">0.176</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">····</span><span·class="o">--</span><span·class="w">·</span><span·class="mf">23.66</span><span·class="w">·</span><span·class="c1">%·of·total·allocations·***</span><span·class="w"> |
| 196 | </span><span·class="n">FUNCTION</span><span·class="w">················</span><span·class="n">CALLS</span><span·class="w">··</span><span·class="n">WORDS</span><span·class="w">··</span><span·class="n">PER</span><span·class="w">·</span><span·class="n">CALL</span><span·class="w">··</span><span·class="p"·data-group-id=" | 196 | </span><span·class="n">FUNCTION</span><span·class="w">················</span><span·class="n">CALLS</span><span·class="w">··</span><span·class="n">WORDS</span><span·class="w">··</span><span·class="n">PER</span><span·class="w">·</span><span·class="n">CALL</span><span·class="w">··</span><span·class="p"·data-group-id="6936152297-4">[</span><span·class="w">····</span><span·class="c1">%]</span><span·class="w"> |
| 197 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nb">spawn_monitor</span><span·class="p">/</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">2</span><span·class="w">·········</span><span·class="mi">2</span><span·class="w">··</span><span·class="p"·data-group-id=" | 197 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nb">spawn_monitor</span><span·class="p">/</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">2</span><span·class="w">·········</span><span·class="mi">2</span><span·class="w">··</span><span·class="p"·data-group-id="6936152297-5">[</span><span·class="w">·</span><span·class="mf">9.09</span><span·class="p"·data-group-id="6936152297-5">]</span><span·class="w"> |
| 198 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nb">spawn_opt</span><span·class="p">/</span><span·class="mi">4</span><span·class="w">··········</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">6</span><span·class="w">·········</span><span·class="mi">6</span><span·class="w">··</span><span·class="p"·data-group-id=" | 198 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nb">spawn_opt</span><span·class="p">/</span><span·class="mi">4</span><span·class="w">··········</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">6</span><span·class="w">·········</span><span·class="mi">6</span><span·class="w">··</span><span·class="p"·data-group-id="6936152297-6">[</span><span·class="mf">27.27</span><span·class="p"·data-group-id="6936152297-6">]</span><span·class="w"> |
| 199 | </span><span·class="nc">test</span><span·class="p">:</span><span·class="ss">test_spawn</span><span·class="p">/</span><span·class="mi">0</span><span·class="w">···········</span><span·class="mi">1</span><span·class="w">·····</span><span·class="mi">14</span><span·class="w">········</span><span·class="mi">14</span><span·class="w">··</span><span·class="p"·data-group-id=" | 199 | </span><span·class="nc">test</span><span·class="p">:</span><span·class="ss">test_spawn</span><span·class="p">/</span><span·class="mi">0</span><span·class="w">···········</span><span·class="mi">1</span><span·class="w">·····</span><span·class="mi">14</span><span·class="w">········</span><span·class="mi">14</span><span·class="w">··</span><span·class="p"·data-group-id="6936152297-7">[</span><span·class="mf">63.64</span><span·class="p"·data-group-id="6936152297-7">]</span><span·class="w"> |
| 200 | ··································</span><span·class="mi">22</span><span·class="w">············</span><span·class="p"·data-group-id=" | 200 | ··································</span><span·class="mi">22</span><span·class="w">············</span><span·class="p"·data-group-id="6936152297-8">[</span><span·class="mf">100.0</span><span·class="p"·data-group-id="6936152297-8">]</span><span·class="w"> |
| 201 | </span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Process</span><span·class="w">·</span><span·class="o"><</span><span·class="mf">0.177</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">····</span><span·class="o">--</span><span·class="w">·</span><span·class="mf">76.34</span><span·class="w">·</span><span·class="c1">%·of·total·allocations·***</span><span·class="w"> | 201 | </span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Process</span><span·class="w">·</span><span·class="o"><</span><span·class="mf">0.177</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">····</span><span·class="o">--</span><span·class="w">·</span><span·class="mf">76.34</span><span·class="w">·</span><span·class="c1">%·of·total·allocations·***</span><span·class="w"> |
| 202 | </span><span·class="n">FUNCTION</span><span·class="w">···········</span><span·class="n">CALLS</span><span·class="w">··</span><span·class="n">WORDS</span><span·class="w">··</span><span·class="n">PER</span><span·class="w">·</span><span·class="n">CALL</span><span·class="w">··</span><span·class="p"·data-group-id=" | 202 | </span><span·class="n">FUNCTION</span><span·class="w">···········</span><span·class="n">CALLS</span><span·class="w">··</span><span·class="n">WORDS</span><span·class="w">··</span><span·class="n">PER</span><span·class="w">·</span><span·class="n">CALL</span><span·class="w">··</span><span·class="p"·data-group-id="6936152297-9">[</span><span·class="w">····</span><span·class="c1">%]</span><span·class="w"> |
| 203 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nb">apply</span><span·class="p">/</span><span·class="mi">2</span><span·class="w">·········</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">7</span><span·class="w">·········</span><span·class="mi">7</span><span·class="w">··</span><span·class="p"·data-group-id=" | 203 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nb">apply</span><span·class="p">/</span><span·class="mi">2</span><span·class="w">·········</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">7</span><span·class="w">·········</span><span·class="mi">7</span><span·class="w">··</span><span·class="p"·data-group-id="6936152297-10">[</span><span·class="w">·</span><span·class="mf">9.86</span><span·class="p"·data-group-id="6936152297-10">]</span><span·class="w"> |
| 204 | </span><span·class="nc">lists</span><span·class="p">:</span><span·class="ss">seq_loop</span><span·class="p">/</span><span·class="mi">3</span><span·class="w">·······</span><span·class="mi">9</span><span·class="w">·····</span><span·class="mi">64</span><span·class="w">·········</span><span·class="mi">7</span><span·class="w">··</span><span·class="p"·data-group-id=" | 204 | </span><span·class="nc">lists</span><span·class="p">:</span><span·class="ss">seq_loop</span><span·class="p">/</span><span·class="mi">3</span><span·class="w">·······</span><span·class="mi">9</span><span·class="w">·····</span><span·class="mi">64</span><span·class="w">·········</span><span·class="mi">7</span><span·class="w">··</span><span·class="p"·data-group-id="6936152297-11">[</span><span·class="mf">90.14</span><span·class="p"·data-group-id="6936152297-11">]</span><span·class="w"> |
| 205 | ·····························</span><span·class="mi">71</span><span·class="w">············</span><span·class="p"·data-group-id=" | 205 | ·····························</span><span·class="mi">71</span><span·class="w">············</span><span·class="p"·data-group-id="6936152297-12">[</span><span·class="mf">100.0</span><span·class="p"·data-group-id="6936152297-12">]</span></code></pre><p>The·following·example·prints·the·combined·memory·allocation·of·all |
| 206 | processes,·sorted·by·the·total·number·of·allocated·words·in·descending | 206 | processes,·sorted·by·the·total·number·of·allocated·words·in·descending |
| 207 | order:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">tprof</span><span·class="p">:</span><span·class="nf">profile</span><span·class="p"·data-group-id=" | 207 | order:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">tprof</span><span·class="p">:</span><span·class="nf">profile</span><span·class="p"·data-group-id="6855683292-1">(</span><span·class="ss">test</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">test_spawn</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6855683292-2">[</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·18,·SHA:·d394ea97c3bce00259120b08e8d348af8d54e47cc3427c9b68d9e4f7b3f59617·...·]-2">]</span><span·class="p">,</span><span·class="w"> |
| 208 | ·················</span><span·class="p"·data-group-id=" | 208 | ·················</span><span·class="p"·data-group-id="6855683292-3">#{</span><span·class="ss">type</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">call_memory</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">report</span><span·class="w">[·...·truncated·by·diffoscope;·len:·560,·SHA:·285fb9a0cc0398502dedbeb1adea526fa8dc0bbe13412134a5cc4ba267254377·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 209 | </span><span·class="n">FUNCTION</span><span·class="w">················</span><span·class="n">CALLS</span><span·class="w">··</span><span·class="n">WORDS</span><span·class="w">··</span><span·class="n">PER</span><span·class="w">·</span><span·class="n">CALL</span><span·class="w">··</span><span·class="p"·data-group-id=" | 209 | </span><span·class="n">FUNCTION</span><span·class="w">················</span><span·class="n">CALLS</span><span·class="w">··</span><span·class="n">WORDS</span><span·class="w">··</span><span·class="n">PER</span><span·class="w">·</span><span·class="n">CALL</span><span·class="w">··</span><span·class="p"·data-group-id="6855683292-6">[</span><span·class="w">····</span><span·class="c1">%]</span><span·class="w"> |
| 210 | </span><span·class="nc">lists</span><span·class="p">:</span><span·class="ss">seq_loop</span><span·class="p">/</span><span·class="mi">3</span><span·class="w">············</span><span·class="mi">9</span><span·class="w">·····</span><span·class="mi">64</span><span·class="w">·········</span><span·class="mi">7</span><span·class="w">··</span><span·class="p"·data-group-id=" | 210 | </span><span·class="nc">lists</span><span·class="p">:</span><span·class="ss">seq_loop</span><span·class="p">/</span><span·class="mi">3</span><span·class="w">············</span><span·class="mi">9</span><span·class="w">·····</span><span·class="mi">64</span><span·class="w">·········</span><span·class="mi">7</span><span·class="w">··</span><span·class="p"·data-group-id="6855683292-7">[</span><span·class="mf">68.82</span><span·class="p"·data-group-id="6855683292-7">]</span><span·class="w"> |
| 211 | </span><span·class="nc">test</span><span·class="p">:</span><span·class="ss">test_spawn</span><span·class="p">/</span><span·class="mi">0</span><span·class="w">···········</span><span·class="mi">1</span><span·class="w">·····</span><span·class="mi">14</span><span·class="w">········</span><span·class="mi">14</span><span·class="w">··</span><span·class="p"·data-group-id=" | 211 | </span><span·class="nc">test</span><span·class="p">:</span><span·class="ss">test_spawn</span><span·class="p">/</span><span·class="mi">0</span><span·class="w">···········</span><span·class="mi">1</span><span·class="w">·····</span><span·class="mi">14</span><span·class="w">········</span><span·class="mi">14</span><span·class="w">··</span><span·class="p"·data-group-id="6855683292-8">[</span><span·class="mf">15.05</span><span·class="p"·data-group-id="6855683292-8">]</span><span·class="w"> |
| 212 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nb">apply</span><span·class="p">/</span><span·class="mi">2</span><span·class="w">··············</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">7</span><span·class="w">·········</span><span·class="mi">7</span><span·class="w">··</span><span·class="p"·data-group-id=" | 212 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nb">apply</span><span·class="p">/</span><span·class="mi">2</span><span·class="w">··············</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">7</span><span·class="w">·········</span><span·class="mi">7</span><span·class="w">··</span><span·class="p"·data-group-id="6855683292-9">[</span><span·class="w">·</span><span·class="mf">7.53</span><span·class="p"·data-group-id="6855683292-9">]</span><span·class="w"> |
| 213 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nb">spawn_opt</span><span·class="p">/</span><span·class="mi">4</span><span·class="w">··········</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">6</span><span·class="w">·········</span><span·class="mi">6</span><span·class="w">··</span><span·class="p"·data-group-id=" | 213 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nb">spawn_opt</span><span·class="p">/</span><span·class="mi">4</span><span·class="w">··········</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">6</span><span·class="w">·········</span><span·class="mi">6</span><span·class="w">··</span><span·class="p"·data-group-id="6855683292-10">[</span><span·class="w">·</span><span·class="mf">6.45</span><span·class="p"·data-group-id="6855683292-10">]</span><span·class="w"> |
| 214 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nb">spawn_monitor</span><span·class="p">/</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">2</span><span·class="w">·········</span><span·class="mi">2</span><span·class="w">··</span><span·class="p"·data-group-id=" | 214 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nb">spawn_monitor</span><span·class="p">/</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">2</span><span·class="w">·········</span><span·class="mi">2</span><span·class="w">··</span><span·class="p"·data-group-id="6855683292-11">[</span><span·class="w">·</span><span·class="mf">2.15</span><span·class="p"·data-group-id="6855683292-11">]</span><span·class="w"> |
| 215 | ··································</span><span·class="mi">93</span><span·class="w">············</span><span·class="p"·data-group-id=" | 215 | ··································</span><span·class="mi">93</span><span·class="w">············</span><span·class="p"·data-group-id="6855683292-12">[</span><span·class="mf">100.0</span><span·class="p"·data-group-id="6855683292-12">]</span></code></pre><p>The·profiling·data·can·also·be·collected·for·further·inspection:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·un[·...·truncated·by·diffoscope;·len:·437,·SHA:·785b5af905bd35f6079ed1a17e9612db053275da430117a8c097359f7acc0e1a·...·]6-2">(</span><span·class="k">fun</span><span·class="w">·</span><span·class="nc">test</span><span·class="p">:</span><span·class="ss">test_spawn</span><span·class="p">/</span><span·class="mi">0</span><span·class="p">,</span><span·class="w"> |
| 216 | ·······································</span><span·class="p"·data-group-id=" | 216 | ·······································</span><span·class="p"·data-group-id="3448332716-3">#{</span><span·class="ss">type</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">call_memory</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">report</span><span·class="w">[·...·truncated·by·diffoscope;·len:·183,·SHA:·a4a88b6d2ea10d59db0caa1287b49cbf4286eb6c533beb48f4cba6956f47f000·...·]6-2">)</span><span·class="p">.</span><span·class="w"> |
| 217 | </span><span·class="o"><</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="o">></span><span·class="gp·unselectable"> | 217 | </span><span·class="o"><</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="o">></span><span·class="gp·unselectable"> |
| 218 | 4>·</span><span·class="nc">tprof</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 218 | 4>·</span><span·class="nc">tprof</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="3448332716-4">(</span><span·class="nc">tprof</span><span·class="p">:</span><span·class="nf">inspect</span><span·class="p"·data-group-id="3448332716-5">(</span><span·class="n">ProfileData</span><span·class="p">,</span><span·class="w">·</span><span·class="ss[·...·truncated·by·diffoscope;·len:·376,·SHA:·03123607243d6ca05795c634c21a81aff287390620c91a1f6fc88bbdfdfbc89c·...·]6-4">)</span><span·class="p">.</span><span·class="w"> |
| 219 | </span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Process</span><span·class="w">·</span><span·class="o"><</span><span·class="mf">0.223</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">····</span><span·class="o">--</span><span·class="w">·</span><span·class="mf">23.66</span><span·class="w">·</span><span·class="c1">%·of·total·allocations·***</span><span·class="w"> | 219 | </span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Process</span><span·class="w">·</span><span·class="o"><</span><span·class="mf">0.223</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">····</span><span·class="o">--</span><span·class="w">·</span><span·class="mf">23.66</span><span·class="w">·</span><span·class="c1">%·of·total·allocations·***</span><span·class="w"> |
| 220 | </span><span·class="n">FUNCTION</span><span·class="w">················</span><span·class="n">CALLS</span><span·class="w">··</span><span·class="n">WORDS</span><span·class="w">··</span><span·class="n">PER</span><span·class="w">·</span><span·class="n">CALL</span><span·class="w">··</span><span·class="p"·data-group-id=" | 220 | </span><span·class="n">FUNCTION</span><span·class="w">················</span><span·class="n">CALLS</span><span·class="w">··</span><span·class="n">WORDS</span><span·class="w">··</span><span·class="n">PER</span><span·class="w">·</span><span·class="n">CALL</span><span·class="w">··</span><span·class="p"·data-group-id="3448332716-7">[</span><span·class="w">····</span><span·class="c1">%]</span><span·class="w"> |
| 221 | </span><span·class="nc">test</span><span·class="p">:</span><span·class="ss">test_spawn</span><span·class="p">/</span><span·class="mi">0</span><span·class="w">···········</span><span·class="mi">1</span><span·class="w">·····</span><span·class="mi">14</span><span·class="w">········</span><span·class="mi">14</span><span·class="w">··</span><span·class="p"·data-group-id=" | 221 | </span><span·class="nc">test</span><span·class="p">:</span><span·class="ss">test_spawn</span><span·class="p">/</span><span·class="mi">0</span><span·class="w">···········</span><span·class="mi">1</span><span·class="w">·····</span><span·class="mi">14</span><span·class="w">········</span><span·class="mi">14</span><span·class="w">··</span><span·class="p"·data-group-id="3448332716-8">[</span><span·class="mf">63.64</span><span·class="p"·data-group-id="3448332716-8">]</span><span·class="w"> |
| 222 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nb">spawn_opt</span><span·class="p">/</span><span·class="mi">4</span><span·class="w">··········</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">6</span><span·class="w">·········</span><span·class="mi">6</span><span·class="w">··</span><span·class="p"·data-group-id=" | 222 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nb">spawn_opt</span><span·class="p">/</span><span·class="mi">4</span><span·class="w">··········</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">6</span><span·class="w">·········</span><span·class="mi">6</span><span·class="w">··</span><span·class="p"·data-group-id="3448332716-9">[</span><span·class="mf">27.27</span><span·class="p"·data-group-id="3448332716-9">]</span><span·class="w"> |
| 223 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nb">spawn_monitor</span><span·class="p">/</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">2</span><span·class="w">·········</span><span·class="mi">2</span><span·class="w">··</span><span·class="p"·data-group-id=" | 223 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nb">spawn_monitor</span><span·class="p">/</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">2</span><span·class="w">·········</span><span·class="mi">2</span><span·class="w">··</span><span·class="p"·data-group-id="3448332716-10">[</span><span·class="w">·</span><span·class="mf">9.09</span><span·class="p"·data-group-id="3448332716-10">]</span><span·class="w"> |
| 224 | ··································</span><span·class="mi">22</span><span·class="w">············</span><span·class="p"·data-group-id=" | 224 | ··································</span><span·class="mi">22</span><span·class="w">············</span><span·class="p"·data-group-id="3448332716-11">[</span><span·class="mf">100.0</span><span·class="p"·data-group-id="3448332716-11">]</span><span·class="w"> |
| 225 | </span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Process</span><span·class="w">·</span><span·class="o"><</span><span·class="mf">0.224</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">····</span><span·class="o">--</span><span·class="w">·</span><span·class="mf">76.34</span><span·class="w">·</span><span·class="c1">%·of·total·allocations·***</span><span·class="w"> | 225 | </span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Process</span><span·class="w">·</span><span·class="o"><</span><span·class="mf">0.224</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">····</span><span·class="o">--</span><span·class="w">·</span><span·class="mf">76.34</span><span·class="w">·</span><span·class="c1">%·of·total·allocations·***</span><span·class="w"> |
| 226 | </span><span·class="n">FUNCTION</span><span·class="w">···········</span><span·class="n">CALLS</span><span·class="w">··</span><span·class="n">WORDS</span><span·class="w">··</span><span·class="n">PER</span><span·class="w">·</span><span·class="n">CALL</span><span·class="w">··</span><span·class="p"·data-group-id=" | 226 | </span><span·class="n">FUNCTION</span><span·class="w">···········</span><span·class="n">CALLS</span><span·class="w">··</span><span·class="n">WORDS</span><span·class="w">··</span><span·class="n">PER</span><span·class="w">·</span><span·class="n">CALL</span><span·class="w">··</span><span·class="p"·data-group-id="3448332716-12">[</span><span·class="w">····</span><span·class="c1">%]</span><span·class="w"> |
| 227 | </span><span·class="nc">lists</span><span·class="p">:</span><span·class="ss">seq_loop</span><span·class="p">/</span><span·class="mi">3</span><span·class="w">·······</span><span·class="mi">9</span><span·class="w">·····</span><span·class="mi">64</span><span·class="w">·········</span><span·class="mi">7</span><span·class="w">··</span><span·class="p"·data-group-id=" | 227 | </span><span·class="nc">lists</span><span·class="p">:</span><span·class="ss">seq_loop</span><span·class="p">/</span><span·class="mi">3</span><span·class="w">·······</span><span·class="mi">9</span><span·class="w">·····</span><span·class="mi">64</span><span·class="w">·········</span><span·class="mi">7</span><span·class="w">··</span><span·class="p"·data-group-id="3448332716-13">[</span><span·class="mf">90.14</span><span·class="p"·data-group-id="3448332716-13">]</span><span·class="w"> |
| 228 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nb">apply</span><span·class="p">/</span><span·class="mi">2</span><span·class="w">·········</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">7</span><span·class="w">·········</span><span·class="mi">7</span><span·class="w">··</span><span·class="p"·data-group-id=" | 228 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nb">apply</span><span·class="p">/</span><span·class="mi">2</span><span·class="w">·········</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">7</span><span·class="w">·········</span><span·class="mi">7</span><span·class="w">··</span><span·class="p"·data-group-id="3448332716-14">[</span><span·class="w">·</span><span·class="mf">9.86</span><span·class="p"·data-group-id="3448332716-14">]</span><span·class="w"> |
| 229 | ·····························</span><span·class="mi">71</span><span·class="w">············</span><span·class="p"·data-group-id=" | 229 | ·····························</span><span·class="mi">71</span><span·class="w">············</span><span·class="p"·data-group-id="3448332716-15">[</span><span·class="mf">100.0</span><span·class="p"·data-group-id="3448332716-15">]</span></code></pre><p>Which·processes·that·are·profiled·depends·on·the·profiling·type.</p><ul><li><p><code·class="inline">call_count</code>·(default)·counts·calls·in·all·processes.</p></li><li><p><code·class="inline">call_time</code>·and·<code·class="inline">call_memory</code>·limits·the·profiling·to·the·processes |
| 230 | spawned·from·the·user-provided·function·(using·the·<code·class="inline">set_on_spawn</code> | 230 | spawned·from·the·user-provided·function·(using·the·<code·class="inline">set_on_spawn</code> |
| 231 | option·for·<a·href="../../../../lib/kernel-10.2.3/doc/html/trace.html#process/4"><code·class="inline">trace:process/4</code></a>).</p></li></ul><p><code·class="inline">call_time</code>·and·<code·class="inline">call_memory</code>·can·be·restricted·to·profile·a·single·process:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">tprof</span><span·class="p">:</span><span·class="nf">profile</span><span·class="p"·data-group-id=" | 231 | option·for·<a·href="../../../../lib/kernel-10.2.3/doc/html/trace.html#process/4"><code·class="inline">trace:process/4</code></a>).</p></li></ul><p><code·class="inline">call_time</code>·and·<code·class="inline">call_memory</code>·can·be·restricted·to·profile·a·single·process:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">tprof</span><span·class="p">:</span><span·class="nf">profile</span><span·class="p"·data-group-id="8844826843-1">(</span><span·class="ss">test</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">test_spawn</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8844826843-2">[</span><span·class="p"·data-gr[·...·truncated·by·diffoscope;·len:·18,·SHA:·22e290546b98042939cd36fbb64f89c3fca87b9844f86eec47259ab48f10642c·...·]-2">]</span><span·class="p">,</span><span·class="w"> |
| 232 | ·················</span><span·class="p"·data-group-id=" | 232 | ·················</span><span·class="p"·data-group-id="8844826843-3">#{</span><span·class="ss">type</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">call_memory</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">set_on_spawn</span><span·clas[·...·truncated·by·diffoscope;·len:·189,·SHA:·2e44a4f2034f9918861cecba9d689749878abe2f1b51e76b8bfd0b43b6abbfa5·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 233 | </span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Process</span><span·class="w">·</span><span·class="o"><</span><span·class="mf">0.183</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">····</span><span·class="o">--</span><span·class="w">·</span><span·class="mf">100.00</span><span·class="w">·</span><span·class="c1">%·of·total·allocations·***</span><span·class="w"> | 233 | </span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Process</span><span·class="w">·</span><span·class="o"><</span><span·class="mf">0.183</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">····</span><span·class="o">--</span><span·class="w">·</span><span·class="mf">100.00</span><span·class="w">·</span><span·class="c1">%·of·total·allocations·***</span><span·class="w"> |
| 234 | </span><span·class="n">FUNCTION</span><span·class="w">················</span><span·class="n">CALLS</span><span·class="w">··</span><span·class="n">WORDS</span><span·class="w">··</span><span·class="n">PER</span><span·class="w">·</span><span·class="n">CALL</span><span·class="w">··</span><span·class="p"·data-group-id=" | 234 | </span><span·class="n">FUNCTION</span><span·class="w">················</span><span·class="n">CALLS</span><span·class="w">··</span><span·class="n">WORDS</span><span·class="w">··</span><span·class="n">PER</span><span·class="w">·</span><span·class="n">CALL</span><span·class="w">··</span><span·class="p"·data-group-id="8844826843-4">[</span><span·class="w">····</span><span·class="c1">%]</span><span·class="w"> |
| 235 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nb">spawn_monitor</span><span·class="p">/</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">2</span><span·class="w">·········</span><span·class="mi">2</span><span·class="w">··</span><span·class="p"·data-group-id=" | 235 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nb">spawn_monitor</span><span·class="p">/</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">2</span><span·class="w">·········</span><span·class="mi">2</span><span·class="w">··</span><span·class="p"·data-group-id="8844826843-5">[</span><span·class="w">·</span><span·class="mf">9.09</span><span·class="p"·data-group-id="8844826843-5">]</span><span·class="w"> |
| 236 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nb">spawn_opt</span><span·class="p">/</span><span·class="mi">4</span><span·class="w">··········</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">6</span><span·class="w">·········</span><span·class="mi">6</span><span·class="w">··</span><span·class="p"·data-group-id=" | 236 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nb">spawn_opt</span><span·class="p">/</span><span·class="mi">4</span><span·class="w">··········</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">6</span><span·class="w">·········</span><span·class="mi">6</span><span·class="w">··</span><span·class="p"·data-group-id="8844826843-6">[</span><span·class="mf">27.27</span><span·class="p"·data-group-id="8844826843-6">]</span><span·class="w"> |
| 237 | </span><span·class="nc">test</span><span·class="p">:</span><span·class="ss">test_spawn</span><span·class="p">/</span><span·class="mi">0</span><span·class="w">···········</span><span·class="mi">1</span><span·class="w">·····</span><span·class="mi">14</span><span·class="w">········</span><span·class="mi">14</span><span·class="w">··</span><span·class="p"·data-group-id=" | 237 | </span><span·class="nc">test</span><span·class="p">:</span><span·class="ss">test_spawn</span><span·class="p">/</span><span·class="mi">0</span><span·class="w">···········</span><span·class="mi">1</span><span·class="w">·····</span><span·class="mi">14</span><span·class="w">········</span><span·class="mi">14</span><span·class="w">··</span><span·class="p"·data-group-id="8844826843-7">[</span><span·class="mf">63.64</span><span·class="p"·data-group-id="8844826843-7">]</span></code></pre><p><a·href=""·id="pg_example"></a></p><p>Erlang·programs·can·perform·expensive·operations·in·other·processes |
| 238 | than·the·original·one.·You·can·include·multiple,·new,·or·even·all | 238 | than·the·original·one.·You·can·include·multiple,·new,·or·even·all |
| 239 | processes·in·the·trace·when·measuring·time·or·memory:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">7>·</span><span·class="nc">pg</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id=" | 239 | processes·in·the·trace·when·measuring·time·or·memory:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">7>·</span><span·class="nc">pg</span><span·class="p">:</span><span·class="nf">start_link</span><span·class="p"·data-group-id="5960234504-1">(</span><span·class="p"·data-group-id="5960234504-1">)</span><span·class="p">.</span><span·class="w"> |
| 240 | </span><span·class="p"·data-group-id=" | 240 | </span><span·class="p"·data-group-id="5960234504-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.252</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="5960234504-2">}</span><span·class="gp·unselectable"> |
| 241 | 8>·</span><span·class="nc">tprof</span><span·class="p">:</span><span·class="nf">profile</span><span·class="p"·data-group-id="7926591445-3">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="7926591445-4">(</span><span·class="p"·data-group-id="7926591445-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nc">pg</span><span·class="p">:</span><span·class="nf">join</span><span·class="p"·data-group-id="7926591445-5">(</span><span·class="ss">group</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">self</span><span·class="p"·data-group-id="7926591445-6">(</span><span·class="p"·data-group-id="7926591445-6">)</span><span·class="p"·data-group-id="7926591445-5">)</span><span·class="w">·</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | ||
| 242 | 241 | 8>·</span><span·class="nc">tprof</span><span·class="p">:</span><span·class="nf">profile</span><span·class="p"·data-group-id="5960234504-3">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="5960234504-4">(</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·565,·SHA:·56eb7f0b8195717058ec21b2b5b5eb489fb3f0c15a95853dd37ba6bfebdf0d34·...·]</span><span·class="w"> | |
| 242 | ·················</span><span·class="p"·data-group-id="5960234504-7">#{</span><span·class="ss">type</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="ss">call_memory</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">rootset</span><span·class="w">·</span><span·class="p">=></span><span·class="w">·</span><span·class="p"·data-group-id="5960234504-8">[</span><span·class="ss">pg</span><span·class="p"·data-group-id="5960234504-8">]</span><span·class="p"·data-group-id="5960234504-7">}</span><span·class="p"·data-group-id="5960234504-3">)</span><span·class="p">.</span><span·class="w"> | ||
| 243 | </span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Process</span><span·class="w">·</span><span·class="o"><</span><span·class="mf">0.252</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">····</span><span·class="o">--</span><span·class="w">·</span><span·class="mf">52.86</span><span·class="w">·</span><span·class="c1">%·of·total·allocations·***</span><span·class="w"> | 243 | </span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Process</span><span·class="w">·</span><span·class="o"><</span><span·class="mf">0.252</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">····</span><span·class="o">--</span><span·class="w">·</span><span·class="mf">52.86</span><span·class="w">·</span><span·class="c1">%·of·total·allocations·***</span><span·class="w"> |
| 244 | </span><span·class="n">FUNCTION</span><span·class="w">······················</span><span·class="n">CALLS</span><span·class="w">··</span><span·class="n">WORDS</span><span·class="w">··</span><span·class="n">PER</span><span·class="w">·</span><span·class="n">CALL</span><span·class="w">··</span><span·class="p"·data-group-id=" | 244 | </span><span·class="n">FUNCTION</span><span·class="w">······················</span><span·class="n">CALLS</span><span·class="w">··</span><span·class="n">WORDS</span><span·class="w">··</span><span·class="n">PER</span><span·class="w">·</span><span·class="n">CALL</span><span·class="w">··</span><span·class="p"·data-group-id="5960234504-9">[</span><span·class="w">····</span><span·class="c1">%]</span><span·class="w"> |
| 245 | </span><span·class="nc">pg</span><span·class="p">:</span><span·class="ss">leave_local_update_ets</span><span·class="p">/</span><span·class="mi">5</span><span·class="w">·······</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">2</span><span·class="w">·········</span><span·class="mi">2</span><span·class="w">··</span><span·class="p"·data-group-id=" | 245 | </span><span·class="nc">pg</span><span·class="p">:</span><span·class="ss">leave_local_update_ets</span><span·class="p">/</span><span·class="mi">5</span><span·class="w">·······</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">2</span><span·class="w">·········</span><span·class="mi">2</span><span·class="w">··</span><span·class="p"·data-group-id="5960234504-10">[</span><span·class="w">·</span><span·class="mf">1.80</span><span·class="p"·data-group-id="5960234504-10">]</span><span·class="w"> |
| 246 | </span><span·class="nc">gen</span><span·class="p">:</span><span·class="ss">reply</span><span·class="p">/</span><span·class="mi">2</span><span·class="w">·······················</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">3</span><span·class="w">·········</span><span·class="mi">3</span><span·class="w">··</span><span·class="p"·data-group-id=" | 246 | </span><span·class="nc">gen</span><span·class="p">:</span><span·class="ss">reply</span><span·class="p">/</span><span·class="mi">2</span><span·class="w">·······················</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">3</span><span·class="w">·········</span><span·class="mi">3</span><span·class="w">··</span><span·class="p"·data-group-id="5960234504-11">[</span><span·class="w">·</span><span·class="mf">2.70</span><span·class="p"·data-group-id="5960234504-11">]</span><span·class="w"> |
| 247 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nb">monitor</span><span·class="p">/</span><span·class="mi">2</span><span·class="w">··················</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">3</span><span·class="w">·········</span><span·class="mi">3</span><span·class="w">··</span><span·class="p"·data-group-id=" | 247 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nb">monitor</span><span·class="p">/</span><span·class="mi">2</span><span·class="w">··················</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">3</span><span·class="w">·········</span><span·class="mi">3</span><span·class="w">··</span><span·class="p"·data-group-id="5960234504-12">[</span><span·class="w">·</span><span·class="mf">2.70</span><span·class="p"·data-group-id="5960234504-12">]</span><span·class="w"> |
| 248 | </span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="ss">try_handle_call</span><span·class="p">/</span><span·class="mi">4</span><span·class="w">······</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">3</span><span·class="w">·········</span><span·class="mi">3</span><span·class="w">··</span><span·class="p"·data-group-id=" | 248 | </span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="ss">try_handle_call</span><span·class="p">/</span><span·class="mi">4</span><span·class="w">······</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">3</span><span·class="w">·········</span><span·class="mi">3</span><span·class="w">··</span><span·class="p"·data-group-id="5960234504-13">[</span><span·class="w">·</span><span·class="mf">2.70</span><span·class="p"·data-group-id="5960234504-13">]</span><span·class="w"> |
| 249 | </span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="ss">try_dispatch</span><span·class="p">/</span><span·class="mi">4</span><span·class="w">·········</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">3</span><span·class="w">·········</span><span·class="mi">3</span><span·class="w">··</span><span·class="p"·data-group-id=" | 249 | </span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="ss">try_dispatch</span><span·class="p">/</span><span·class="mi">4</span><span·class="w">·········</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">3</span><span·class="w">·········</span><span·class="mi">3</span><span·class="w">··</span><span·class="p"·data-group-id="5960234504-14">[</span><span·class="w">·</span><span·class="mf">2.70</span><span·class="p"·data-group-id="5960234504-14">]</span><span·class="w"> |
| 250 | </span><span·class="nc">maps</span><span·class="p">:</span><span·class="ss">iterator</span><span·class="p">/</span><span·class="mi">1</span><span·class="w">···················</span><span·class="mi">2</span><span·class="w">······</span><span·class="mi">4</span><span·class="w">·········</span><span·class="mi">2</span><span·class="w">··</span><span·class="p"·data-group-id=" | 250 | </span><span·class="nc">maps</span><span·class="p">:</span><span·class="ss">iterator</span><span·class="p">/</span><span·class="mi">1</span><span·class="w">···················</span><span·class="mi">2</span><span·class="w">······</span><span·class="mi">4</span><span·class="w">·········</span><span·class="mi">2</span><span·class="w">··</span><span·class="p"·data-group-id="5960234504-15">[</span><span·class="w">·</span><span·class="mf">3.60</span><span·class="p"·data-group-id="5960234504-15">]</span><span·class="w"> |
| 251 | </span><span·class="nc">maps</span><span·class="p">:</span><span·class="ss">take</span><span·class="p">/</span><span·class="mi">2</span><span·class="w">·······················</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">6</span><span·class="w">·········</span><span·class="mi">6</span><span·class="w">··</span><span·class="p"·data-group-id=" | 251 | </span><span·class="nc">maps</span><span·class="p">:</span><span·class="ss">take</span><span·class="p">/</span><span·class="mi">2</span><span·class="w">·······················</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">6</span><span·class="w">·········</span><span·class="mi">6</span><span·class="w">··</span><span·class="p"·data-group-id="5960234504-16">[</span><span·class="w">·</span><span·class="mf">5.41</span><span·class="p"·data-group-id="5960234504-16">]</span><span·class="w"> |
| 252 | </span><span·class="nc">pg</span><span·class="p">:</span><span·class="ss">join_local_update_ets</span><span·class="p">/</span><span·class="mi">5</span><span·class="w">········</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">8</span><span·class="w">·········</span><span·class="mi">8</span><span·class="w">··</span><span·class="p"·data-group-id=" | 252 | </span><span·class="nc">pg</span><span·class="p">:</span><span·class="ss">join_local_update_ets</span><span·class="p">/</span><span·class="mi">5</span><span·class="w">········</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">8</span><span·class="w">·········</span><span·class="mi">8</span><span·class="w">··</span><span·class="p"·data-group-id="5960234504-17">[</span><span·class="w">·</span><span·class="mf">7.21</span><span·class="p"·data-group-id="5960234504-17">]</span><span·class="w"> |
| 253 | </span><span·class="nc">pg</span><span·class="p">:</span><span·class="ss">handle_info</span><span·class="p">/</span><span·class="mi">2</span><span·class="w">··················</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">8</span><span·class="w">·········</span><span·class="mi">8</span><span·class="w">··</span><span·class="p"·data-group-id=" | 253 | </span><span·class="nc">pg</span><span·class="p">:</span><span·class="ss">handle_info</span><span·class="p">/</span><span·class="mi">2</span><span·class="w">··················</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">8</span><span·class="w">·········</span><span·class="mi">8</span><span·class="w">··</span><span·class="p"·data-group-id="5960234504-18">[</span><span·class="w">·</span><span·class="mf">7.21</span><span·class="p"·data-group-id="5960234504-18">]</span><span·class="w"> |
| 254 | </span><span·class="nc">pg</span><span·class="p">:</span><span·class="ss">handle_call</span><span·class="p">/</span><span·class="mi">3</span><span·class="w">··················</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">9</span><span·class="w">·········</span><span·class="mi">9</span><span·class="w">··</span><span·class="p"·data-group-id=" | 254 | </span><span·class="nc">pg</span><span·class="p">:</span><span·class="ss">handle_call</span><span·class="p">/</span><span·class="mi">3</span><span·class="w">··················</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">9</span><span·class="w">·········</span><span·class="mi">9</span><span·class="w">··</span><span·class="p"·data-group-id="5960234504-19">[</span><span·class="w">·</span><span·class="mf">8.11</span><span·class="p"·data-group-id="5960234504-19">]</span><span·class="w"> |
| 255 | </span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="ss">loop</span><span·class="p">/</span><span·class="mi">7</span><span·class="w">·················</span><span·class="mi">2</span><span·class="w">······</span><span·class="mi">9</span><span·class="w">·········</span><span·class="mi">4</span><span·class="w">··</span><span·class="p"·data-group-id=" | 255 | </span><span·class="nc">gen_server</span><span·class="p">:</span><span·class="ss">loop</span><span·class="p">/</span><span·class="mi">7</span><span·class="w">·················</span><span·class="mi">2</span><span·class="w">······</span><span·class="mi">9</span><span·class="w">·········</span><span·class="mi">4</span><span·class="w">··</span><span·class="p"·data-group-id="5960234504-20">[</span><span·class="w">·</span><span·class="mf">8.11</span><span·class="p"·data-group-id="5960234504-20">]</span><span·class="w"> |
| 256 | </span><span·class="nc">ets</span><span·class="p">:</span><span·class="ss">lookup</span><span·class="p">/</span><span·class="mi">2</span><span·class="w">······················</span><span·class="mi">2</span><span·class="w">·····</span><span·class="mi">10</span><span·class="w">·········</span><span·class="mi">5</span><span·class="w">··</span><span·class="p"·data-group-id=" | 256 | </span><span·class="nc">ets</span><span·class="p">:</span><span·class="ss">lookup</span><span·class="p">/</span><span·class="mi">2</span><span·class="w">······················</span><span·class="mi">2</span><span·class="w">·····</span><span·class="mi">10</span><span·class="w">·········</span><span·class="mi">5</span><span·class="w">··</span><span·class="p"·data-group-id="5960234504-21">[</span><span·class="w">·</span><span·class="mf">9.01</span><span·class="p"·data-group-id="5960234504-21">]</span><span·class="w"> |
| 257 | </span><span·class="nc">pg</span><span·class="p">:</span><span·class="ss">join_local</span><span·class="p">/</span><span·class="mi">3</span><span·class="w">···················</span><span·class="mi">1</span><span·class="w">·····</span><span·class="mi">11</span><span·class="w">········</span><span·class="mi">11</span><span·class="w">··</span><span·class="p"·data-group-id=" | 257 | </span><span·class="nc">pg</span><span·class="p">:</span><span·class="ss">join_local</span><span·class="p">/</span><span·class="mi">3</span><span·class="w">···················</span><span·class="mi">1</span><span·class="w">·····</span><span·class="mi">11</span><span·class="w">········</span><span·class="mi">11</span><span·class="w">··</span><span·class="p"·data-group-id="5960234504-22">[</span><span·class="w">·</span><span·class="mf">9.91</span><span·class="p"·data-group-id="5960234504-22">]</span><span·class="w"> |
| 258 | </span><span·class="nc">pg</span><span·class="p">:</span><span·class="ss">notify_group</span><span·class="p">/</span><span·class="mi">5</span><span·class="w">·················</span><span·class="mi">2</span><span·class="w">·····</span><span·class="mi">16</span><span·class="w">·········</span><span·class="mi">8</span><span·class="w">··</span><span·class="p"·data-group-id=" | 258 | </span><span·class="nc">pg</span><span·class="p">:</span><span·class="ss">notify_group</span><span·class="p">/</span><span·class="mi">5</span><span·class="w">·················</span><span·class="mi">2</span><span·class="w">·····</span><span·class="mi">16</span><span·class="w">·········</span><span·class="mi">8</span><span·class="w">··</span><span·class="p"·data-group-id="5960234504-23">[</span><span·class="mf">14.41</span><span·class="p"·data-group-id="5960234504-23">]</span><span·class="w"> |
| 259 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nb">setelement</span><span·class="p">/</span><span·class="mi">3</span><span·class="w">···············</span><span·class="mi">2</span><span·class="w">·····</span><span·class="mi">16</span><span·class="w">·········</span><span·class="mi">8</span><span·class="w">··</span><span·class="p"·data-group-id=" | 259 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nb">setelement</span><span·class="p">/</span><span·class="mi">3</span><span·class="w">···············</span><span·class="mi">2</span><span·class="w">·····</span><span·class="mi">16</span><span·class="w">·········</span><span·class="mi">8</span><span·class="w">··</span><span·class="p"·data-group-id="5960234504-24">[</span><span·class="mf">14.41</span><span·class="p"·data-group-id="5960234504-24">]</span><span·class="w"> |
| 260 | ·······································</span><span·class="mi">111</span><span·class="w">············</span><span·class="p"·data-group-id=" | 260 | ·······································</span><span·class="mi">111</span><span·class="w">············</span><span·class="p"·data-group-id="5960234504-25">[</span><span·class="mf">100.0</span><span·class="p"·data-group-id="5960234504-25">]</span><span·class="w"> |
| 261 | </span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Process</span><span·class="w">·</span><span·class="o"><</span><span·class="mf">0.255</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">····</span><span·class="o">--</span><span·class="w">·</span><span·class="mf">47.14</span><span·class="w">·</span><span·class="c1">%·of·total·allocations·***</span><span·class="w"> | 261 | </span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="o">*</span><span·class="w">·</span><span·class="n">Process</span><span·class="w">·</span><span·class="o"><</span><span·class="mf">0.255</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="w">····</span><span·class="o">--</span><span·class="w">·</span><span·class="mf">47.14</span><span·class="w">·</span><span·class="c1">%·of·total·allocations·***</span><span·class="w"> |
| 262 | </span><span·class="n">FUNCTION</span><span·class="w">···················</span><span·class="n">CALLS</span><span·class="w">··</span><span·class="n">WORDS</span><span·class="w">··</span><span·class="n">PER</span><span·class="w">·</span><span·class="n">CALL</span><span·class="w">··</span><span·class="p"·data-group-id=" | 262 | </span><span·class="n">FUNCTION</span><span·class="w">···················</span><span·class="n">CALLS</span><span·class="w">··</span><span·class="n">WORDS</span><span·class="w">··</span><span·class="n">PER</span><span·class="w">·</span><span·class="n">CALL</span><span·class="w">··</span><span·class="p"·data-group-id="5960234504-26">[</span><span·class="w">····</span><span·class="c1">%]</span><span·class="w"> |
| 263 | </span><span·class="nc">erl_eval</span><span·class="p">:</span><span·class="ss">match_list</span><span·class="p">/</span><span·class="mi">6</span><span·class="w">··········</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">3</span><span·class="w">·········</span><span·class="mi">3</span><span·class="w">··</span><span·class="p"·data-group-id=" | 263 | </span><span·class="nc">erl_eval</span><span·class="p">:</span><span·class="ss">match_list</span><span·class="p">/</span><span·class="mi">6</span><span·class="w">··········</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">3</span><span·class="w">·········</span><span·class="mi">3</span><span·class="w">··</span><span·class="p"·data-group-id="5960234504-27">[</span><span·class="w">·</span><span·class="mf">3.03</span><span·class="p"·data-group-id="5960234504-27">]</span><span·class="w"> |
| 264 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nb">monitor</span><span·class="p">/</span><span·class="mi">2</span><span·class="w">···············</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">3</span><span·class="w">·········</span><span·class="mi">3</span><span·class="w">··</span><span·class="p"·data-group-id=" | 264 | </span><span·class="nc">erlang</span><span·class="p">:</span><span·class="nb">monitor</span><span·class="p">/</span><span·class="mi">2</span><span·class="w">···············</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">3</span><span·class="w">·········</span><span·class="mi">3</span><span·class="w">··</span><span·class="p"·data-group-id="5960234504-28">[</span><span·class="w">·</span><span·class="mf">3.03</span><span·class="p"·data-group-id="5960234504-28">]</span><span·class="w"> |
| 265 | </span><span·class="nc">lists</span><span·class="p">:</span><span·class="ss">reverse</span><span·class="p">/</span><span·class="mi">1</span><span·class="w">················</span><span·class="mi">2</span><span·class="w">······</span><span·class="mi">4</span><span·class="w">·········</span><span·class="mi">2</span><span·class="w">··</span><span·class="p"·data-group-id=" | 265 | </span><span·class="nc">lists</span><span·class="p">:</span><span·class="ss">reverse</span><span·class="p">/</span><span·class="mi">1</span><span·class="w">················</span><span·class="mi">2</span><span·class="w">······</span><span·class="mi">4</span><span·class="w">·········</span><span·class="mi">2</span><span·class="w">··</span><span·class="p"·data-group-id="5960234504-29">[</span><span·class="w">·</span><span·class="mf">4.04</span><span·class="p"·data-group-id="5960234504-29">]</span><span·class="w"> |
| 266 | </span><span·class="nc">pg</span><span·class="p">:</span><span·class="ss">join</span><span·class="p">/</span><span·class="mi">3</span><span·class="w">······················</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">4</span><span·class="w">·········</span><span·class="mi">4</span><span·class="w">··</span><span·class="p"·data-group-id=" | 266 | </span><span·class="nc">pg</span><span·class="p">:</span><span·class="ss">join</span><span·class="p">/</span><span·class="mi">3</span><span·class="w">······················</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">4</span><span·class="w">·········</span><span·class="mi">4</span><span·class="w">··</span><span·class="p"·data-group-id="5960234504-30">[</span><span·class="w">·</span><span·class="mf">4.04</span><span·class="p"·data-group-id="5960234504-30">]</span><span·class="w"> |
| 267 | </span><span·class="nc">erl_eval</span><span·class="p">:</span><span·class="ss">add_bindings</span><span·class="p">/</span><span·class="mi">2</span><span·class="w">········</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">5</span><span·class="w">·········</span><span·class="mi">5</span><span·class="w">··</span><span·class="p"·data-group-id=" | 267 | </span><span·class="nc">erl_eval</span><span·class="p">:</span><span·class="ss">add_bindings</span><span·class="p">/</span><span·class="mi">2</span><span·class="w">········</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">5</span><span·class="w">·········</span><span·class="mi">5</span><span·class="w">··</span><span·class="p"·data-group-id="5960234504-31">[</span><span·class="w">·</span><span·class="mf">5.05</span><span·class="p"·data-group-id="5960234504-31">]</span><span·class="w"> |
| 268 | </span><span·class="nc">erl_eval</span><span·class="p">:</span><span·class="ss">do_apply</span><span·class="p">/</span><span·class="mi">7</span><span·class="w">············</span><span·class="mi">2</span><span·class="w">······</span><span·class="mi">6</span><span·class="w">·········</span><span·class="mi">3</span><span·class="w">··</span><span·class="p"·data-group-id=" | 268 | </span><span·class="nc">erl_eval</span><span·class="p">:</span><span·class="ss">do_apply</span><span·class="p">/</span><span·class="mi">7</span><span·class="w">············</span><span·class="mi">2</span><span·class="w">······</span><span·class="mi">6</span><span·class="w">·········</span><span·class="mi">3</span><span·class="w">··</span><span·class="p"·data-group-id="5960234504-32">[</span><span·class="w">·</span><span·class="mf">6.06</span><span·class="p"·data-group-id="5960234504-32">]</span><span·class="w"> |
| 269 | </span><span·class="nc">gen</span><span·class="p">:</span><span·class="ss">call</span><span·class="p">/</span><span·class="mi">4</span><span·class="w">·····················</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">8</span><span·class="w">·········</span><span·class="mi">8</span><span·class="w">··</span><span·class="p"·data-group-id=" | 269 | </span><span·class="nc">gen</span><span·class="p">:</span><span·class="ss">call</span><span·class="p">/</span><span·class="mi">4</span><span·class="w">·····················</span><span·class="mi">1</span><span·class="w">······</span><span·class="mi">8</span><span·class="w">·········</span><span·class="mi">8</span><span·class="w">··</span><span·class="p"·data-group-id="5960234504-33">[</span><span·class="w">·</span><span·class="mf">8.08</span><span·class="p"·data-group-id="5960234504-33">]</span><span·class="w"> |
| 270 | </span><span·class="nc">erl_eval</span><span·class="p">:</span><span·class="ss">expr_list</span><span·class="p">/</span><span·class="mi">7</span><span·class="w">···········</span><span·class="mi">4</span><span·class="w">·····</span><span·class="mi">10</span><span·class="w">·········</span><span·class="mi">2</span><span·class="w">··</span><span·class="p"·data-group-id=" | 270 | </span><span·class="nc">erl_eval</span><span·class="p">:</span><span·class="ss">expr_list</span><span·class="p">/</span><span·class="mi">7</span><span·class="w">···········</span><span·class="mi">4</span><span·class="w">·····</span><span·class="mi">10</span><span·class="w">·········</span><span·class="mi">2</span><span·class="w">··</span><span·class="p"·data-group-id="5960234504-34">[</span><span·class="mf">10.10</span><span·class="p"·data-group-id="5960234504-34">]</span><span·class="w"> |
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| 136 | reading;·not·all·of·the·concepts·used·are·explained,·and·it·is·assumed·that·the | 136 | reading;·not·all·of·the·concepts·used·are·explained,·and·it·is·assumed·that·the |
| 137 | <a·href="xref.html">reference·manual</a>·has·been·at·least·skimmed.</p><h2·id="module-check"·class="section-heading"> | 137 | <a·href="xref.html">reference·manual</a>·has·been·at·least·skimmed.</p><h2·id="module-check"·class="section-heading"> |
| 138 | ··<a·href="#module-check"·class="hover-link"> | 138 | ··<a·href="#module-check"·class="hover-link"> |
| 139 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 139 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 140 | ··</a> | 140 | ··</a> |
| 141 | ··<span·class="text">Module·Check</span> | 141 | ··<span·class="text">Module·Check</span> |
| 142 | </h2> | 142 | </h2> |
| 143 | <p>Assume·we·want·to·check·the·following·module:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 143 | <p>Assume·we·want·to·check·the·following·module:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="9059274946-1">(</span><span·class="ss">my_module</span><span·class="p"·data-group-id="9059274946-1">)</span><span·class="p">.</span><span·class="w"> |
| 144 | </span><span·class="w"> | 144 | </span><span·class="w"> |
| 145 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 145 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="9059274946-2">(</span><span·class="p"·data-group-id="9059274946-3">[</span><span·class="ss">t</span><span·class="p">/</span><span·class="mi">1</span><span·class="p"·data-group-id="9059274946-3">]</span><span·class="p"·data-group-id="9059274946-2">)</span><span·class="p">.</span><span·class="w"> |
| 146 | </span><span·class="nf">t</span><span·class="p"·data-group-id=" | 146 | </span><span·class="nf">t</span><span·class="p"·data-group-id="9059274946-4">(</span><span·class="n">A</span><span·class="p"·data-group-id="9059274946-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 147 | ··</span><span·class="nc">my_module</span><span·class="p">:</span><span·class="nf">t2</span><span·class="p"·data-group-id=" | 147 | ··</span><span·class="nc">my_module</span><span·class="p">:</span><span·class="nf">t2</span><span·class="p"·data-group-id="9059274946-5">(</span><span·class="n">A</span><span·class="p"·data-group-id="9059274946-5">)</span><span·class="p">.</span><span·class="w"> |
| 148 | </span><span·class="nf">t2</span><span·class="p"·data-group-id=" | 148 | </span><span·class="nf">t2</span><span·class="p"·data-group-id="9059274946-6">(</span><span·class="p">_</span><span·class="p"·data-group-id="9059274946-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 149 | ··</span><span·class="ss">true</span><span·class="p">.</span></code></pre><p>Cross·reference·data·are·read·from·BEAM·files,·so·the·first·step·when·checking | 149 | ··</span><span·class="ss">true</span><span·class="p">.</span></code></pre><p>Cross·reference·data·are·read·from·BEAM·files,·so·the·first·step·when·checking |
| 150 | an·edited·module·is·to·compile·it:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nf">c</span><span·class="p"·data-group-id=" | 150 | an·edited·module·is·to·compile·it:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nf">c</span><span·class="p"·data-group-id="6051454666-1">(</span><span·class="ss">my_module</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">debug_info</span><span·class="p"·data-group-id="6051454666-1">)</span><span·class="p">.</span><span·class="w"> |
| 151 | </span><span·class="p">.</span><span·class="o">/</span><span·class="ss">my_module</span><span·class="p">.</span><span·class="nc">erl</span><span·class="p">:</span><span·class="mi">10</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Warning</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">function</span><span·class="w">·</span><span·class="ss">t2</span><span·class="p">/</span><span·class="mi">1</span><span·class="w">·</span><span·class="ss">is</span><span·class="w">·</span><span·class="ss">unused</span><span·class="w"> | 151 | </span><span·class="p">.</span><span·class="o">/</span><span·class="ss">my_module</span><span·class="p">.</span><span·class="nc">erl</span><span·class="p">:</span><span·class="mi">10</span><span·class="p">:</span><span·class="w">·</span><span·class="n">Warning</span><span·class="p">:</span><span·class="w">·</span><span·class="ss">function</span><span·class="w">·</span><span·class="ss">t2</span><span·class="p">/</span><span·class="mi">1</span><span·class="w">·</span><span·class="ss">is</span><span·class="w">·</span><span·class="ss">unused</span><span·class="w"> |
| 152 | </span><span·class="p"·data-group-id=" | 152 | </span><span·class="p"·data-group-id="6051454666-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">my_module</span><span·class="p"·data-group-id="6051454666-2">}</span></code></pre><p>The·<code·class="inline">debug_info</code>·option·ensures·that·the·BEAM·file·contains·debug·information, |
| 153 | which·makes·it·possible·to·find·unused·local·functions.</p><p>The·module·can·now·be·checked·for·calls·to | 153 | which·makes·it·possible·to·find·unused·local·functions.</p><p>The·module·can·now·be·checked·for·calls·to |
| 154 | <a·href="xref.html#deprecated_function">deprecated·functions</a>,·calls·to | 154 | <a·href="xref.html#deprecated_function">deprecated·functions</a>,·calls·to |
| 155 | <a·href="xref.html#undefined_function">undefined·functions</a>,·and·for·unused·local | 155 | <a·href="xref.html#undefined_function">undefined·functions</a>,·and·for·unused·local |
| 156 | functions:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">xref</span><span·class="p">:</span><span·class="nf">m</span><span·class="p"·data-group-id=" | 156 | functions:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">xref</span><span·class="p">:</span><span·class="nf">m</span><span·class="p"·data-group-id="4171621075-1">(</span><span·class="ss">my_module</span><span·class="p"·data-group-id="4171621075-1">)</span><span·class="w"> |
| 157 | </span><span·class="p"·data-group-id=" | 157 | </span><span·class="p"·data-group-id="4171621075-2">[</span><span·class="p"·data-group-id="4171621075-3">{</span><span·class="ss">deprecated</span><span·class="p">,</span><span·class="p"·data-group-id="4171621075-4">[</span><span·class="p"·data-group-id="4171621075-4">]</span><span·class="p"·d[·...·truncated·by·diffoscope;·len:·24,·SHA:·951ca126693fbe05db990fc201397e4389fd33f2a355f351aabfd542e24628d1·...·]-3">}</span><span·class="p">,</span><span·class="w"> |
| 158 | ·</span><span·class="p"·data-group-id=" | 158 | ·</span><span·class="p"·data-group-id="4171621075-5">{</span><span·class="ss">undefined</span><span·class="p">,</span><span·class="p"·data-group-id="4171621075-6">[</span><span·class="p"·data-group-id="4171621075-7">{</span><span·class="p"·data-group-id="4171621075-8">{</span><span·class="ss">m[·...·truncated·by·diffoscope;·len:·575,·SHA:·7566de7aaca15a267c00785ee2d0a7d7144cdf2cbb49e725bb68aec362ec6eb6·...·]-5">}</span><span·class="p">,</span><span·class="w"> |
| 159 | ·</span><span·class="p"·data-group-id=" | 159 | ·</span><span·class="p"·data-group-id="4171621075-10">{</span><span·class="ss">unused</span><span·class="p">,</span><span·class="p"·data-group-id="4171621075-11">[</span><span·class="p"·data-group-id="4171621075-12">{</span><span·class="ss">my_module</span><span·class="p">,</span><span·class="s[·...·truncated·by·diffoscope;·len:·264,·SHA:·daab52249e907b0afe72aa52d850ed485b537bb8b8ec516d93098aeece28d5cb·...·]-2">]</span></code></pre><p><code·class="inline">m/1</code>·is·also·suitable·for·checking·that·the·BEAM·file·of·a·module·that·is·about |
| 160 | to·be·loaded·into·a·running·a·system·does·not·call·any·undefined·functions.·In | 160 | to·be·loaded·into·a·running·a·system·does·not·call·any·undefined·functions.·In |
| 161 | either·case,·the·code·path·of·the·code·server·(see·the·module·<code·class="inline">code</code>)·is·used | 161 | either·case,·the·code·path·of·the·code·server·(see·the·module·<code·class="inline">code</code>)·is·used |
| 162 | for·finding·modules·that·export·externally·called·functions·not·exported·by·the | 162 | for·finding·modules·that·export·externally·called·functions·not·exported·by·the |
| 163 | checked·module·itself,·so·called·<a·href="xref.html#library_module">library·modules</a>.</p><h2·id="predefined-analysis"·class="section-heading"> | 163 | checked·module·itself,·so·called·<a·href="xref.html#library_module">library·modules</a>.</p><h2·id="predefined-analysis"·class="section-heading"> |
| 164 | ··<a·href="#predefined-analysis"·class="hover-link"> | 164 | ··<a·href="#predefined-analysis"·class="hover-link"> |
| 165 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 165 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 166 | ··</a> | 166 | ··</a> |
| 167 | ··<span·class="text">Predefined·Analysis</span> | 167 | ··<span·class="text">Predefined·Analysis</span> |
| 168 | </h2> | 168 | </h2> |
| 169 | <p>In·the·last·example·the·module·to·analyze·was·given·as·an·argument·to·<code·class="inline">m/1</code>,·and | 169 | <p>In·the·last·example·the·module·to·analyze·was·given·as·an·argument·to·<code·class="inline">m/1</code>,·and |
| 170 | the·code·path·was·(implicitly)·used·as·<a·href="xref.html#library_path">library·path</a>.·In | 170 | the·code·path·was·(implicitly)·used·as·<a·href="xref.html#library_path">library·path</a>.·In |
| 171 | this·example·an·<a·href="xref.html#xref_server">xref·server</a>·will·be·used,·which·makes·it | 171 | this·example·an·<a·href="xref.html#xref_server">xref·server</a>·will·be·used,·which·makes·it |
| 172 | possible·to·analyze·applications·and·releases,·and·also·to·select·the·library | 172 | possible·to·analyze·applications·and·releases,·and·also·to·select·the·library |
| 173 | path·explicitly.</p><p>Each·Xref·server·is·referred·to·by·a·unique·name.·The·name·is·given·when | 173 | path·explicitly.</p><p>Each·Xref·server·is·referred·to·by·a·unique·name.·The·name·is·given·when |
| 174 | creating·the·server:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">xref</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 174 | creating·the·server:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">1>·</span><span·class="nc">xref</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="2632784635-1">(</span><span·class="ss">s</span><span·class="p"·data-group-id="2632784635-1">)</span><span·class="p">.</span><span·class="w"> |
| 175 | </span><span·class="p"·data-group-id=" | 175 | </span><span·class="p"·data-group-id="2632784635-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="o"><</span><span·class="mf">0.27</span><span·class="p">.</span><span·class="mi">0</span><span·class="o">></span><span·class="p"·data-group-id="2632784635-2">}</span></code></pre><p>Next·the·system·to·be·analyzed·is·added·to·the·Xref·server.·Here·the·system·will |
| 176 | be·OTP,·so·no·library·path·will·be·needed.·Otherwise,·when·analyzing·a·system | 176 | be·OTP,·so·no·library·path·will·be·needed.·Otherwise,·when·analyzing·a·system |
| 177 | that·uses·OTP,·the·OTP·modules·are·typically·made·library·modules·by·setting·the | 177 | that·uses·OTP,·the·OTP·modules·are·typically·made·library·modules·by·setting·the |
| 178 | library·path·to·the·default·OTP·code·path·(or·to·<code·class="inline">code_path</code>,·see·the | 178 | library·path·to·the·default·OTP·code·path·(or·to·<code·class="inline">code_path</code>,·see·the |
| 179 | <a·href="xref.html#code_path">reference·manual</a>).·By·default,·the·names·of·read·BEAM | 179 | <a·href="xref.html#code_path">reference·manual</a>).·By·default,·the·names·of·read·BEAM |
| 180 | files·and·warnings·are·output·when·adding·analyzed·modules,·but·these·messages | 180 | files·and·warnings·are·output·when·adding·analyzed·modules,·but·these·messages |
| 181 | can·be·avoided·by·setting·default·values·of·some·options:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">xref</span><span·class="p">:</span><span·class="nf">set_default</span><span·class="p"·data-group-id=" | 181 | can·be·avoided·by·setting·default·values·of·some·options:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">2>·</span><span·class="nc">xref</span><span·class="p">:</span><span·class="nf">set_default</span><span·class="p"·data-group-id="8140276985-1">(</span><span·class="ss">s</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="8140276985-2">[</span><span·class="p"·data-group-id="8140276985-3">{</span><span·class="ss">verbose</span><span·class="p">,</span>[·...·truncated·by·diffoscope;·len:·415,·SHA:·0ac6c38bc297d7891aa2b0e7f20d505bfb073fa4ba588e02e899290a53770f69·...·]-1">)</span><span·class="p">.</span><span·class="w"> |
| 182 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> | 182 | </span><span·class="ss">ok</span><span·class="gp·unselectable"> |
| 183 | 3>·</span><span·class="nc">xref</span><span·class="p">:</span><span·class="nf">add_release</span><span·class="p"·data-group-id=" | 183 | 3>·</span><span·class="nc">xref</span><span·class="p">:</span><span·class="nf">add_release</span><span·class="p"·data-group-id="8140276985-5">(</span><span·class="ss">s</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">code</span><span·class="p">:</span><span·class="nf">lib_dir</span><span·class="p"·data-group-id="8140276985-6">(</span><span·class="p"·data-grou[·...·truncated·by·diffoscope;·len:·326,·SHA:·f5f3d05f5f72115e34f5f1285a811fba6ec70dce3a1ef79c541d6ca829407c2a·...·]-5">)</span><span·class="p">.</span><span·class="w"> |
| 184 | </span><span·class="p"·data-group-id=" | 184 | </span><span·class="p"·data-group-id="8140276985-8">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="ss">otp</span><span·class="p"·data-group-id="8140276985-8">}</span></code></pre><p><code·class="inline">add_release/3</code>·assumes·that·all·subdirectories·of·the·library·directory |
| 185 | returned·by·<a·href="../../../../lib/kernel-10.2.3/doc/html/code.html#lib_dir/0"><code·class="inline">code:lib_dir()</code></a>·contain·applications; | 185 | returned·by·<a·href="../../../../lib/kernel-10.2.3/doc/html/code.html#lib_dir/0"><code·class="inline">code:lib_dir()</code></a>·contain·applications; |
| 186 | the·effect·is·that·of·reading·all·BEAM·files·for·the·application.</p><p>It·is·now·easy·to·check·the·release·for·calls·to·undefined·functions:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">4>·</span><span·class="nc">xref</span><span·class="p">:</span><span·class="nf">analyze</span><span·class="p"·data-group-id="87 | 186 | the·effect·is·that·of·reading·all·BEAM·files·for·the·application.</p><p>It·is·now·easy·to·check·the·release·for·calls·to·undefined·functions:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">4>·</span><span·class="nc">xref</span><span·class="p">:</span><span·class="nf">analyze</span><span·class="p"·data-group-id="0874977363-1">(</span><span·class="ss">s</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">undefined_function_calls</span><span·class="p"·data-group-id="0874977363-1">)</span><span·class="p">.</span><span·class="w"> |
| 187 | </span><span·class="p"·data-group-id="87 | 187 | </span><span·class="p"·data-group-id="0874977363-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0874977363-3">[</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="0874[·...·truncated·by·diffoscope;·len:·457,·SHA:·6d18ea2f6de416ab7093f3079af1e83157497ab642ff54bccb05e098de105245·...·]-1">)</span><span·class="p">.</span></code></pre><p>The·check·for·calls·to·undefined·functions·is·an·example·of·a·predefined |
| 188 | analysis,·probably·the·most·useful·one.·Other·examples·are·the·analyses·that | 188 | analysis,·probably·the·most·useful·one.·Other·examples·are·the·analyses·that |
| 189 | find·unused·local·functions,·or·functions·that·call·some·given·functions.·See | 189 | find·unused·local·functions,·or·functions·that·call·some·given·functions.·See |
| 190 | the·<a·href="xref.html#analyze">analyze/2,3</a>·functions·for·a·complete·list·of·predefined | 190 | the·<a·href="xref.html#analyze">analyze/2,3</a>·functions·for·a·complete·list·of·predefined |
| 191 | analyses.</p><p>Each·predefined·analysis·is·a·shorthand·for·a·<a·href="xref.html#query">query</a>,·a | 191 | analyses.</p><p>Each·predefined·analysis·is·a·shorthand·for·a·<a·href="xref.html#query">query</a>,·a |
| 192 | sentence·of·a·tiny·language·providing·cross·reference·data·as·values·of | 192 | sentence·of·a·tiny·language·providing·cross·reference·data·as·values·of |
| 193 | <a·href="xref.html#predefined_variable">predefined·variables</a>.·The·check·for·calls·to | 193 | <a·href="xref.html#predefined_variable">predefined·variables</a>.·The·check·for·calls·to |
| 194 | undefined·functions·can·thus·be·stated·as·a·query:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">4>·</span><span·class="nc">xref</span><span·class="p">:</span><span·class="nf">q</span><span·class="p"·data-group-id=" | 194 | undefined·functions·can·thus·be·stated·as·a·query:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">4>·</span><span·class="nc">xref</span><span·class="p">:</span><span·class="nf">q</span><span·class="p"·data-group-id="9120049935-1">(</span><span·class="ss">s</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"(XC·-·UC)·||·(XU·-·X·-·B)"</span><span·class="p"·data-group-id="9120049935-1">)</span><span·class="p">.</span><span·class="w"> |
| 195 | </span><span·class="p"·data-group-id=" | 195 | </span><span·class="p"·data-group-id="9120049935-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="p"·data-group-id="9120049935-3">[</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="9120049935-3">]</span><span·[·...·truncated·by·diffoscope;·len:·35,·SHA:·f5e3e80a23cb510b62177d6c364782c644d2078b5c0a0303b1ad414e8940d285·...·]-2">}</span></code></pre><p>The·query·asks·for·the·restriction·of·external·calls·except·the·unresolved·calls |
| 196 | to·calls·to·functions·that·are·externally·used·but·neither·exported·nor·built-in | 196 | to·calls·to·functions·that·are·externally·used·but·neither·exported·nor·built-in |
| 197 | functions·(the·<code·class="inline">||</code>·operator·restricts·the·used·functions·while·the·<code·class="inline">|</code>·operator | 197 | functions·(the·<code·class="inline">||</code>·operator·restricts·the·used·functions·while·the·<code·class="inline">|</code>·operator |
| 198 | restricts·the·calling·functions).·The·<code·class="inline">-</code>·operator·returns·the·difference·of·two | 198 | restricts·the·calling·functions).·The·<code·class="inline">-</code>·operator·returns·the·difference·of·two |
| 199 | sets,·and·the·<code·class="inline">+</code>·operator·to·be·used·below·returns·the·union·of·two·sets.</p><p>The·relationships·between·the·predefined·variables·<code·class="inline">XU</code>,·<code·class="inline">X</code>,·<code·class="inline">B</code>·and·a·few | 199 | sets,·and·the·<code·class="inline">+</code>·operator·to·be·used·below·returns·the·union·of·two·sets.</p><p>The·relationships·between·the·predefined·variables·<code·class="inline">XU</code>,·<code·class="inline">X</code>,·<code·class="inline">B</code>·and·a·few |
| 200 | others·are·worth·elaborating·upon.·The·reference·manual·mentions·two·ways·of | 200 | others·are·worth·elaborating·upon.·The·reference·manual·mentions·two·ways·of |
| 201 | expressing·the·set·of·all·functions,·one·that·focuses·on·how·they·are·defined: | 201 | expressing·the·set·of·all·functions,·one·that·focuses·on·how·they·are·defined: |
| 202 | <code·class="inline">X + L + B + U</code>,·and·one·that·focuses·on·how·they·are·used:·<code·class="inline">UU + LU + XU</code>.·The | 202 | <code·class="inline">X + L + B + U</code>,·and·one·that·focuses·on·how·they·are·used:·<code·class="inline">UU + LU + XU</code>.·The |
| Offset 220, 16 lines modified | Offset 220, 16 lines modified | ||
| 220 | </h2> | 220 | </h2> |
| 221 | <p>The·module·check·and·the·predefined·analyses·are·useful,·but·limited.·Sometimes | 221 | <p>The·module·check·and·the·predefined·analyses·are·useful,·but·limited.·Sometimes |
| 222 | more·flexibility·is·needed,·for·instance·one·might·not·need·to·apply·a·graph | 222 | more·flexibility·is·needed,·for·instance·one·might·not·need·to·apply·a·graph |
| 223 | analysis·on·all·calls,·but·some·subset·will·do·equally·well.·That·flexibility·is | 223 | analysis·on·all·calls,·but·some·subset·will·do·equally·well.·That·flexibility·is |
| 224 | provided·with·a·simple·language.·Below·are·some·expressions·of·the·language·with | 224 | provided·with·a·simple·language.·Below·are·some·expressions·of·the·language·with |
| 225 | comments,·focusing·on·elements·of·the·language·rather·than·providing·useful | 225 | comments,·focusing·on·elements·of·the·language·rather·than·providing·useful |
| 226 | examples.·The·analyzed·system·is·assumed·to·be·OTP,·so·in·order·to·run·the | 226 | examples.·The·analyzed·system·is·assumed·to·be·OTP,·so·in·order·to·run·the |
| 227 | queries,·first·evaluate·these·calls:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">xref</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 227 | queries,·first·evaluate·these·calls:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nc">xref</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="1413630971-1">(</span><span·class="ss">s</span><span·class="p"·data-group-id="1413630971-1">)</span><span·class="p">.</span><span·class="w"> |
| 228 | </span><span·class="nc">xref</span><span·class="p">:</span><span·class="nf">add_release</span><span·class="p"·data-group-id=" | 228 | </span><span·class="nc">xref</span><span·class="p">:</span><span·class="nf">add_release</span><span·class="p"·data-group-id="1413630971-2">(</span><span·class="ss">s</span><span·class="p">,</span><span·class="w">·</span><span·class="nc">code</span><span·class="p">:</span><span·class="nf">root_dir</span><span·class="p"·data-group-id="1413630971-3">(</span><span·class="p"·data-gro[·...·truncated·by·diffoscope;·len:·70,·SHA:·635412084af02885a1c42aa5613b5bad900b48e15ff3cfb87d1fa103eaeb15c5·...·]-2">)</span><span·class="p">.</span></code></pre><ul><li><p><strong><code·class="inline">xref:q(s,·"(Fun)·xref·:·Mod").</code></strong>·-·All·functions·of·the·<code·class="inline">xref</code>·module.</p></li><li><p><strong><code·class="inline">xref:q(s,·"xref·:·Mod·*·X").</code></strong>·-·All·exported·functions·of·the·<code·class="inline">xref</code> |
| 229 | module.·The·first·operand·of·the·intersection·operator·<code·class="inline">*</code>·is·implicitly | 229 | module.·The·first·operand·of·the·intersection·operator·<code·class="inline">*</code>·is·implicitly |
| 230 | converted·to·the·more·special·type·of·the·second·operand.</p></li><li><p><strong><code·class="inline">xref:q(s,·"(Mod)·tools").</code></strong>·-·All·modules·of·the·Tools·application.</p></li><li><p><strong><code·class="inline">xref:q(s,·'"xref_.*"·:·Mod').</code></strong>·-·All·modules·with·a·name·beginning·with | 230 | converted·to·the·more·special·type·of·the·second·operand.</p></li><li><p><strong><code·class="inline">xref:q(s,·"(Mod)·tools").</code></strong>·-·All·modules·of·the·Tools·application.</p></li><li><p><strong><code·class="inline">xref:q(s,·'"xref_.*"·:·Mod').</code></strong>·-·All·modules·with·a·name·beginning·with |
| 231 | <code·class="inline">xref_</code>.</p></li><li><p><strong><code·class="inline">xref:q(s,·"#·E | X ").</code></strong>·-·Number·of·calls·from·exported·functions.</p></li><li><p><strong><code·class="inline">xref:q(s,·"XC || L ").</code></strong>·-·All·external·calls·to·local·functions.</p></li><li><p><strong><code·class="inline">xref:q(s,·"XC * LC").</code></strong>·-·All·calls·that·have·both·an·external·and·a·local | 231 | <code·class="inline">xref_</code>.</p></li><li><p><strong><code·class="inline">xref:q(s,·"#·E | X ").</code></strong>·-·Number·of·calls·from·exported·functions.</p></li><li><p><strong><code·class="inline">xref:q(s,·"XC || L ").</code></strong>·-·All·external·calls·to·local·functions.</p></li><li><p><strong><code·class="inline">xref:q(s,·"XC * LC").</code></strong>·-·All·calls·that·have·both·an·external·and·a·local |
| 232 | version.</p></li><li><p><strong><code·class="inline">xref:q(s,·"(LLin)·(LC·*·XC)").</code></strong>·-·The·lines·where·the·local·calls·of·the | 232 | version.</p></li><li><p><strong><code·class="inline">xref:q(s,·"(LLin)·(LC·*·XC)").</code></strong>·-·The·lines·where·the·local·calls·of·the |
| 233 | last·example·are·made.</p></li><li><p><strong><code·class="inline">xref:q(s,·"(XLin)·(LC·*·XC)").</code></strong>·-·The·lines·where·the·external·calls·of | 233 | last·example·are·made.</p></li><li><p><strong><code·class="inline">xref:q(s,·"(XLin)·(LC·*·XC)").</code></strong>·-·The·lines·where·the·external·calls·of |
| 234 | the·example·before·last·are·made.</p></li><li><p><strong><code·class="inline">xref:q(s,·"XC·*·(ME·-·strict·ME)").</code></strong>·-·External·calls·within·some·module.</p></li><li><p><strong><code·class="inline">xref:q(s,·"E ||| kernel").</code></strong>·-·All·calls·within·the·Kernel·application.</p></li><li><p><strong><code·class="inline">xref:q(s,·"closure E | kernel || kernel").</code></strong>·-·All·direct·and·indirect | 234 | the·example·before·last·are·made.</p></li><li><p><strong><code·class="inline">xref:q(s,·"XC·*·(ME·-·strict·ME)").</code></strong>·-·External·calls·within·some·module.</p></li><li><p><strong><code·class="inline">xref:q(s,·"E ||| kernel").</code></strong>·-·All·calls·within·the·Kernel·application.</p></li><li><p><strong><code·class="inline">xref:q(s,·"closure E | kernel || kernel").</code></strong>·-·All·direct·and·indirect |
| 235 | calls·within·the·Kernel·application.·Both·the·calling·and·the·used·functions | 235 | calls·within·the·Kernel·application.·Both·the·calling·and·the·used·functions |
| Offset 264, 26 lines modified | Offset 264, 26 lines modified | ||
| 264 | <code·class="inline">digraph</code>·representation·of·graphs)·has·to·be·explicitly·applied.</p><p>As·an·example·of·analyzing·indirect·calls,·the·following·Erlang·function·tries | 264 | <code·class="inline">digraph</code>·representation·of·graphs)·has·to·be·explicitly·applied.</p><p>As·an·example·of·analyzing·indirect·calls,·the·following·Erlang·function·tries |
| 265 | to·answer·the·question:·if·we·want·to·know·which·modules·are·used·indirectly·by | 265 | to·answer·the·question:·if·we·want·to·know·which·modules·are·used·indirectly·by |
| 266 | some·module(s),·is·it·worth·while·using·the | 266 | some·module(s),·is·it·worth·while·using·the |
| 267 | <a·href="xref.html#call_graph">function·graph</a>·rather·than·the·module·graph?·Recall·that | 267 | <a·href="xref.html#call_graph">function·graph</a>·rather·than·the·module·graph?·Recall·that |
| 268 | a·module·M1·is·said·to·call·a·module·M2·if·there·is·some·function·in·M1·that | 268 | a·module·M1·is·said·to·call·a·module·M2·if·there·is·some·function·in·M1·that |
| 269 | calls·some·function·in·M2.·It·would·be·nice·if·we·could·use·the·much·smaller | 269 | calls·some·function·in·M2.·It·would·be·nice·if·we·could·use·the·much·smaller |
| 270 | module·graph,·since·it·is·available·also·in·the·light·weight | 270 | module·graph,·since·it·is·available·also·in·the·light·weight |
| 271 | <code·class="inline">modules</code><a·href="xref.html#mode">mode</a>·of·Xref·servers.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">t</span><span·class="p"·data-group-id=" | 271 | <code·class="inline">modules</code><a·href="xref.html#mode">mode</a>·of·Xref·servers.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">t</span><span·class="p"·data-group-id="0609307125-1">(</span><span·class="n">S</span><span·class="p"·data-group-id="0609307125-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 272 | ··</span><span·class="p"·data-group-id=" | 272 | ··</span><span·class="p"·data-group-id="0609307125-2">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="p"·data-group-id="0609307125-2">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class[·...·truncated·by·diffoscope;·len:·285,·SHA:·9c4618ec8ebc58186cb0d5f501b627b61632c2ec0bfee65b098a733d1d8c4796·...·]-3">)</span><span·class="p">,</span><span·class="w"> |
| 273 | ··</span><span·class="p"·data-group-id=" | 273 | ··</span><span·class="p"·data-group-id="0609307125-4">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ms</span><span·class="p"·data-group-id="0609307125-4">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·clas[·...·truncated·by·diffoscope;·len:·270,·SHA:·346ead110b64f6f3371ba22dfdc6ae8f42a869fd6064f948ae3d56cf805dfa41·...·]-5">)</span><span·class="p">,</span><span·class="w"> |
| 274 | ··</span><span·class="n">Fun</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 274 | ··</span><span·class="n">Fun</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="0609307125-6">(</span><span·class="n">M</span><span·class="p">,</span><span·class="w">·</span><span·class="n">N</span><span·class="p"·data-group-id="0609307125-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 275 | ······</span><span·class="n">Q</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">io_lib</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 275 | ······</span><span·class="n">Q</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">io_lib</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="0609307125-7">(</span><span·class="s">"#·(Mod)·(Eplus·|·</span><span·class="si">~p</span><span·class="s">·:·Mod)"</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="0609307125-8">[</span><span·class="n">M</span><[·...·truncated·by·diffoscope;·len:·93,·SHA:·64593abad5a5216fa70e9b402573d2e71de2d97e32a210a3c009139e025fec7a·...·]-7">)</span><span·class="p">,</span><span·class="w"> |
| 276 | ······</span><span·class="p"·data-group-id=" | 276 | ······</span><span·class="p"·data-group-id="0609307125-9">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">N0</span><span·class="p"·data-group-id="0609307125-9">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·clas[·...·truncated·by·diffoscope;·len:·450,·SHA:·d3971e378f2aa0ee615af15cf070493ac59bd9c0fb7ccb1136f0ff2cbd3080aa·...·]-10">)</span><span·class="p">,</span><span·class="w"> |
| 277 | ······</span><span·class="n">N</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="n">N0</span><span·class="w"> | 277 | ······</span><span·class="n">N</span><span·class="w">·</span><span·class="o">+</span><span·class="w">·</span><span·class="n">N0</span><span·class="w"> |
| 278 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> | 278 | ····</span><span·class="k">end</span><span·class="p">,</span><span·class="w"> |
| 279 | ··</span><span·class="n">Sum</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">foldl</span><span·class="p"·data-group-id=" | 279 | ··</span><span·class="n">Sum</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">foldl</span><span·class="p"·data-group-id="0609307125-12">(</span><span·class="n">Fun</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">0</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Ms</span><span·class="p"·data-group-id="0609307125-12">)</span><span·class="p">,</span><span·class="w"> |
| 280 | ··</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">xref</span><span·class="p">:</span><span·class="nf">forget</span><span·class="p"·data-group-id=" | 280 | ··</span><span·class="ss">ok</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">xref</span><span·class="p">:</span><span·class="nf">forget</span><span·class="p"·data-group-id="0609307125-13">(</span><span·class="n">S</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">'Eplus'</span><span·class="p"·data-group-id="0609307125-13">)</span><span·class="p">,</span><span·class="w"> |
| 281 | ··</span><span·class="p"·data-group-id=" | 281 | ··</span><span·class="p"·data-group-id="0609307125-14">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Tot</span><span·class="p"·data-group-id="0609307125-14">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·c[·...·truncated·by·diffoscope;·len:·291,·SHA:·8a7b810fcd7f4d36240876a674d782957e779089945ceb2f1966bdc91f1d8850·...·]-15">)</span><span·class="p">,</span><span·class="w"> |
| 282 | ··</span><span·class="mi">100</span><span·class="w">·</span><span·class="o">*</span><span·class="w">·</span><span·class="p"·data-group-id=" | 282 | ··</span><span·class="mi">100</span><span·class="w">·</span><span·class="o">*</span><span·class="w">·</span><span·class="p"·data-group-id="0609307125-16">(</span><span·class="p"·data-group-id="0609307125-17">(</span><span·class="n">Tot</span><span·class="w">·</span><span·class="o">-</span><span·class="w">·</span><span·class="n">Sum</span><span·class="p"·data-group-id="0609307125-17">)</span><[·...·truncated·by·diffoscope;·len:·138,·SHA:·b88e875a2276d6b1a7ed7dc4e42ff5e96e46296d857e394cd1a3da4416bc9adc·...·]-16">)</span><span·class="p">.</span></code></pre><p>Comments·on·the·code:</p><ul><li>We·want·to·find·the·reduction·of·the·closure·of·the·function·graph·to·modules. |
| 283 | The·direct·expression·for·doing·that·would·be·<code·class="inline">(Mod) (closure E | AM)</code>,·but | 283 | The·direct·expression·for·doing·that·would·be·<code·class="inline">(Mod) (closure E | AM)</code>,·but |
| 284 | then·we·would·have·to·represent·all·of·the·transitive·closure·of·E·in·memory. | 284 | then·we·would·have·to·represent·all·of·the·transitive·closure·of·E·in·memory. |
| 285 | Instead·the·number·of·indirectly·used·modules·is·found·for·each·analyzed | 285 | Instead·the·number·of·indirectly·used·modules·is·found·for·each·analyzed |
| 286 | module,·and·the·sum·over·all·modules·is·calculated.</li><li>A·user·variable·is·employed·for·holding·the·<code·class="inline">digraph</code>·representation·of·the | 286 | module,·and·the·sum·over·all·modules·is·calculated.</li><li>A·user·variable·is·employed·for·holding·the·<code·class="inline">digraph</code>·representation·of·the |
| 287 | function·graph·for·use·in·many·queries.·The·reason·is·efficiency.·As·opposed | 287 | function·graph·for·use·in·many·queries.·The·reason·is·efficiency.·As·opposed |
| 288 | to·the·<code·class="inline">=</code>·operator,·the·<code·class="inline">:=</code>·operator·saves·a·value·for·subsequent·analyses. | 288 | to·the·<code·class="inline">=</code>·operator,·the·<code·class="inline">:=</code>·operator·saves·a·value·for·subsequent·analyses. |
| 289 | Here·might·be·the·place·to·note·that·equal·subexpressions·within·a·query·are | 289 | Here·might·be·the·place·to·note·that·equal·subexpressions·within·a·query·are |
| Offset 157, 21 lines modified | Offset 157, 21 lines modified | ||
| 157 | that·object.·Type·checking·is·done·so·that·a·module·only·operates·on·it's | 157 | that·object.·Type·checking·is·done·so·that·a·module·only·operates·on·it's |
| 158 | objects·or·inherited·classes.</p><p>An·object·is·created·with·<em>new</em>·and·destroyed·with·<em>destroy</em>.·Most·functions·in | 158 | objects·or·inherited·classes.</p><p>An·object·is·created·with·<em>new</em>·and·destroyed·with·<em>destroy</em>.·Most·functions·in |
| 159 | the·classes·are·named·the·same·as·their·C++·counterpart,·except·that·for | 159 | the·classes·are·named·the·same·as·their·C++·counterpart,·except·that·for |
| 160 | convenience,·in·erlang·they·start·with·a·lowercase·letter·and·the·first·argument | 160 | convenience,·in·erlang·they·start·with·a·lowercase·letter·and·the·first·argument |
| 161 | is·the·object·reference.·Optional·arguments·are·last·and·expressed·as·tagged | 161 | is·the·object·reference.·Optional·arguments·are·last·and·expressed·as·tagged |
| 162 | tuples·in·any·order.</p><p>For·example·the·<em>wxWindow</em>·C++·class·is·implemented·in·the·<em>wxWindow</em>·erlang | 162 | tuples·in·any·order.</p><p>For·example·the·<em>wxWindow</em>·C++·class·is·implemented·in·the·<em>wxWindow</em>·erlang |
| 163 | module·and·the·member·<em>wxWindow::CenterOnParent</em>·is·thus | 163 | module·and·the·member·<em>wxWindow::CenterOnParent</em>·is·thus |
| 164 | <em>wxWindow:centerOnParent</em>.·The·following·C++·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··</span><span·class="ss">wxWindow</span><span·class="w">·</span><span·class="n">MyWin</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">new</span><span·class="w">·</span><span·class="nf">wxWindow</span><span·class="p"·data-group-id=" | 164 | <em>wxWindow:centerOnParent</em>.·The·following·C++·code:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··</span><span·class="ss">wxWindow</span><span·class="w">·</span><span·class="n">MyWin</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">new</span><span·class="w">·</span><span·class="nf">wxWindow</span><span·class="p"·data-group-id="2630628359-1">(</span><span·class="p"·data-group-id="2630628359-1">)</span><span·class="p">;</span><span·class="w"> |
| 165 | ··</span><span·class="n">MyWin</span><span·class="p">.</span><span·class="n">CenterOnParent</span><span·class="p"·data-group-id=" | 165 | ··</span><span·class="n">MyWin</span><span·class="p">.</span><span·class="n">CenterOnParent</span><span·class="p"·data-group-id="2630628359-2">(</span><span·class="ss">wxVERTICAL</span><span·class="p"·data-group-id="2630628359-2">)</span><span·class="p">;</span><span·class="w"> |
| 166 | ··</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 166 | ··</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 167 | ··</span><span·class="ss">delete</span><span·class="w">·</span><span·class="n">MyWin</span><span·class="p">;</span></code></pre><p>would·in·erlang·look·like:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··</span><span·class="n">MyWin</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">wxWindow</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id=" | 167 | ··</span><span·class="ss">delete</span><span·class="w">·</span><span·class="n">MyWin</span><span·class="p">;</span></code></pre><p>would·in·erlang·look·like:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··</span><span·class="n">MyWin</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">wxWindow</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id="6514079284-1">(</span><span·class="p"·data-group-id="6514079284-1">)</span><span·class="p">,</span><span·class="w"> |
| 168 | ··</span><span·class="nc">wxWindow</span><span·class="p">:</span><span·class="nf">centerOnParent</span><span·class="p"·data-group-id=" | 168 | ··</span><span·class="nc">wxWindow</span><span·class="p">:</span><span·class="nf">centerOnParent</span><span·class="p"·data-group-id="6514079284-2">(</span><span·class="n">MyWin</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="6514079284-3">[</span><span·class="p"·data-group-id="6514079284-4">{</span><span·class="ss">dir</span><span·class="p">,</span><[·...·truncated·by·diffoscope;·len:·204,·SHA:·70255bbf9c32d22ce860ebf51e97a138b5009f403a65b6d1e380670fcf786e26·...·]-2">)</span><span·class="p">,</span><span·class="w"> |
| 169 | ··</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 169 | ··</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 170 | ··</span><span·class="nc">wxWindow</span><span·class="p">:</span><span·class="nf">destroy</span><span·class="p"·data-group-id=" | 170 | ··</span><span·class="nc">wxWindow</span><span·class="p">:</span><span·class="nf">destroy</span><span·class="p"·data-group-id="6514079284-5">(</span><span·class="n">MyWin</span><span·class="p"·data-group-id="6514079284-5">)</span><span·class="p">,</span></code></pre><p>When·you·are·reading·wxWidgets·documentation·or·the·examples,·you·will·notice |
| 171 | that·some·of·the·most·basic·classes·are·missing·in·<em>wx</em>,·they·are·directly | 171 | that·some·of·the·most·basic·classes·are·missing·in·<em>wx</em>,·they·are·directly |
| 172 | mapped·to·corresponding·erlang·terms:</p><ul><li><p><strong><em>wxPoint</em>·is·represented·by·{Xcoord,Ycoord}</strong></p></li><li><p><strong><em>wxSize</em>·is·represented·by·{Width,Height}</strong></p></li><li><p><strong><em>wxRect</em>·is·represented·by·{Xcoord,Ycoord,Width,Height}</strong></p></li><li><p><strong><em>wxColour</em>·is·represented·by·{Red,Green,Blue[,Alpha]}</strong></p></li><li><p><strong><em>wxString</em>·is·represented·by | 172 | mapped·to·corresponding·erlang·terms:</p><ul><li><p><strong><em>wxPoint</em>·is·represented·by·{Xcoord,Ycoord}</strong></p></li><li><p><strong><em>wxSize</em>·is·represented·by·{Width,Height}</strong></p></li><li><p><strong><em>wxRect</em>·is·represented·by·{Xcoord,Ycoord,Width,Height}</strong></p></li><li><p><strong><em>wxColour</em>·is·represented·by·{Red,Green,Blue[,Alpha]}</strong></p></li><li><p><strong><em>wxString</em>·is·represented·by |
| 173 | <a·href="../../../../lib/stdlib-6.2.1/doc/html/unicode.html#t:charlist/0">unicode:charlist()</a></strong></p></li><li><p><strong><em>wxGBPosition</em>·is·represented·by·{Row,Column}</strong></p></li><li><p><strong><em>wxGBSpan</em>·is·represented·by·{RowSpan,ColumnSPan}</strong></p></li><li><p><strong><em>wxGridCellCoords</em>·is·represented·by·{Row,Column}</strong></p></li></ul><p>In·the·places·where·the·erlang·API·differs·from·the·original·one·it·should·be | 173 | <a·href="../../../../lib/stdlib-6.2.1/doc/html/unicode.html#t:charlist/0">unicode:charlist()</a></strong></p></li><li><p><strong><em>wxGBPosition</em>·is·represented·by·{Row,Column}</strong></p></li><li><p><strong><em>wxGBSpan</em>·is·represented·by·{RowSpan,ColumnSPan}</strong></p></li><li><p><strong><em>wxGridCellCoords</em>·is·represented·by·{Row,Column}</strong></p></li></ul><p>In·the·places·where·the·erlang·API·differs·from·the·original·one·it·should·be |
| 174 | obvious·from·the·erlang·documentation·which·representation·has·been·used.·E.g. | 174 | obvious·from·the·erlang·documentation·which·representation·has·been·used.·E.g. |
| 175 | the·C++·arrays·and/or·lists·are·sometimes·represented·as·erlang·lists·and | 175 | the·C++·arrays·and/or·lists·are·sometimes·represented·as·erlang·lists·and |
| 176 | sometimes·as·tuples.</p><p>Colours·are·represented·with·{Red,Green,Blue[,Alpha]},·the·Alpha·value·is | 176 | sometimes·as·tuples.</p><p>Colours·are·represented·with·{Red,Green,Blue[,Alpha]},·the·Alpha·value·is |
| 177 | optional·when·used·as·an·argument·to·functions,·but·it·will·always·be·returned | 177 | optional·when·used·as·an·argument·to·functions,·but·it·will·always·be·returned |
| Offset 191, 22 lines modified | Offset 191, 22 lines modified | ||
| 191 | ··<span·class="text">Multiple·processes·and·memory·handling</span> | 191 | ··<span·class="text">Multiple·processes·and·memory·handling</span> |
| 192 | </h2> | 192 | </h2> |
| 193 | <p>The·intention·is·that·each·erlang·application·calls·wx:new()·once·to·setup·it's | 193 | <p>The·intention·is·that·each·erlang·application·calls·wx:new()·once·to·setup·it's |
| 194 | GUI·which·creates·an·environment·and·a·memory·mapping.·To·be·able·to·use·<em>wx</em> | 194 | GUI·which·creates·an·environment·and·a·memory·mapping.·To·be·able·to·use·<em>wx</em> |
| 195 | from·several·processes·in·your·application,·you·must·share·the·environment.·You | 195 | from·several·processes·in·your·application,·you·must·share·the·environment.·You |
| 196 | can·get·the·active·environment·with·<a·href="wx.html#get_env/0"><code·class="inline">wx:get_env/0</code></a>·and·set·it·in·the·new | 196 | can·get·the·active·environment·with·<a·href="wx.html#get_env/0"><code·class="inline">wx:get_env/0</code></a>·and·set·it·in·the·new |
| 197 | processes·with·<a·href="wx.html#set_env/1"><code·class="inline">wx:set_env/1</code></a>.·Two·processes·or·applications·which·have·both | 197 | processes·with·<a·href="wx.html#set_env/1"><code·class="inline">wx:set_env/1</code></a>.·Two·processes·or·applications·which·have·both |
| 198 | called·wx:new()·will·not·be·able·use·each·others·objects.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··</span><span·class="nc">wx</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id=" | 198 | called·wx:new()·will·not·be·able·use·each·others·objects.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··</span><span·class="nc">wx</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id="4147909419-1">(</span><span·class="p"·data-group-id="4147909419-1">)</span><span·class="p">,</span><span·class="w"> |
| 199 | ··</span><span·class="n">MyWin</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">wxFrame</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id=" | 199 | ··</span><span·class="n">MyWin</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">wxFrame</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id="4147909419-2">(</span><span·class="nc">wx</span><span·class="p">:</span><span·class="nf">null</span><span·class="p"·data-group-id="4147909419-3">(</span><span·class="p"·data-group-id="4147909419-3">)</span><span·class="p">,</span><span·class="w">·</span><s[·...·truncated·by·diffoscope;·len:·309,·SHA:·9a13eb36f26b3e78b6d70d6c0251aac4b9d417fee3f1d06511069fd84b8c630f·...·]-2">)</span><span·class="p">,</span><span·class="w"> |
| 200 | ··</span><span·class="n">Env</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">wx</span><span·class="p">:</span><span·class="nf">get_env</span><span·class="p"·data-group-id=" | 200 | ··</span><span·class="n">Env</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">wx</span><span·class="p">:</span><span·class="nf">get_env</span><span·class="p"·data-group-id="4147909419-5">(</span><span·class="p"·data-group-id="4147909419-5">)</span><span·class="p">,</span><span·class="w"> |
| 201 | ··</span><span·class="nf">spawn</span><span·class="p"·data-group-id=" | 201 | ··</span><span·class="nf">spawn</span><span·class="p"·data-group-id="4147909419-6">(</span><span·class="nf">fun</span><span·class="p"·data-group-id="4147909419-7">(</span><span·class="p"·data-group-id="4147909419-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 202 | ···········</span><span·class="nc">wx</span><span·class="p">:</span><span·class="nf">set_env</span><span·class="p"·data-group-id=" | 202 | ···········</span><span·class="nc">wx</span><span·class="p">:</span><span·class="nf">set_env</span><span·class="p"·data-group-id="4147909419-8">(</span><span·class="n">Env</span><span·class="p"·data-group-id="4147909419-8">)</span><span·class="p">,</span><span·class="w"> |
| 203 | ···········</span><span·class="c1">%%·Here·you·can·do·wx·calls·from·your·helper·process.</span><span·class="w"> | 203 | ···········</span><span·class="c1">%%·Here·you·can·do·wx·calls·from·your·helper·process.</span><span·class="w"> |
| 204 | ···········</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 204 | ···········</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 205 | ········</span><span·class="k">end</span><span·class="p"·data-group-id=" | 205 | ········</span><span·class="k">end</span><span·class="p"·data-group-id="4147909419-6">)</span><span·class="p">,</span><span·class="w"> |
| 206 | ··</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>When·<a·href="wx.html#destroy/0"><code·class="inline">wx:destroy/0</code></a>·is·invoked·or·when·all·processes·in·the·application·have | 206 | ··</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><p>When·<a·href="wx.html#destroy/0"><code·class="inline">wx:destroy/0</code></a>·is·invoked·or·when·all·processes·in·the·application·have |
| 207 | died,·the·memory·is·deleted·and·all·windows·created·by·that·application·are | 207 | died,·the·memory·is·deleted·and·all·windows·created·by·that·application·are |
| 208 | closed.</p><p>The·<em>wx</em>·application·never·cleans·or·garbage·collects·memory·as·long·as·the·user | 208 | closed.</p><p>The·<em>wx</em>·application·never·cleans·or·garbage·collects·memory·as·long·as·the·user |
| 209 | application·is·alive.·Most·of·the·objects·are·deleted·when·a·window·is·closed, | 209 | application·is·alive.·Most·of·the·objects·are·deleted·when·a·window·is·closed, |
| 210 | or·at·least·all·the·objects·which·have·a·parent·argument·that·is·non·null.·By | 210 | or·at·least·all·the·objects·which·have·a·parent·argument·that·is·non·null.·By |
| 211 | using·<code·class="inline">wxCLASS:destroy/1</code>·when·possible·you·can·avoid·an·increasing·memory | 211 | using·<code·class="inline">wxCLASS:destroy/1</code>·when·possible·you·can·avoid·an·increasing·memory |
| 212 | usage.·This·is·especially·important·when·<em>wxWidgets</em>·assumes·or·recommends·that | 212 | usage.·This·is·especially·important·when·<em>wxWidgets</em>·assumes·or·recommends·that |
| Offset 1, 1 lines modified | Offset 1, 1 lines modified | ||
| 1 | Zip·archive·data,·made·by·v6.1·UNIX,·extract·using·at·least·v1.0,·last·modified,·last·modified·Sun,·Mar·18·2025·0 | 1 | Zip·archive·data,·made·by·v6.1·UNIX,·extract·using·at·least·v1.0,·last·modified,·last·modified·Sun,·Mar·18·2025·08:49:50,·uncompressed·size·20,·method=store |
| Offset 1, 14 lines modified | Offset 1, 14 lines modified | ||
| 1 | <?xml·version="1.0"·encoding="utf-8"?> | 1 | <?xml·version="1.0"·encoding="utf-8"?> |
| 2 | <package·xmlns="http://www.idpf.org/2007/opf"·unique-identifier="project-wx"·version="3.0"> | 2 | <package·xmlns="http://www.idpf.org/2007/opf"·unique-identifier="project-wx"·version="3.0"> |
| 3 | ··<metadata·xmlns:dc="http://purl.org/dc/elements/1.1/"> | 3 | ··<metadata·xmlns:dc="http://purl.org/dc/elements/1.1/"> |
| 4 | ····<dc:title>wx·-·2.4.3</dc:title> | 4 | ····<dc:title>wx·-·2.4.3</dc:title> |
| 5 | ····<dc:identifier·id="project-wx">urn:uuid: | 5 | ····<dc:identifier·id="project-wx">urn:uuid:2a21d146-9c0d-e98e-2554-fc7eb28071c0</dc:identifier> |
| 6 | ····<dc:language>en</dc:language> | 6 | ····<dc:language>en</dc:language> |
| 7 | ····<meta·property="dcterms:modified">2025-03-18T0 | 7 | ····<meta·property="dcterms:modified">2025-03-18T08:49:50Z</meta> |
| 8 | ··</metadata> | 8 | ··</metadata> |
| 9 | ··<manifest> | 9 | ··<manifest> |
| 10 | ····<item·id="nav"·href="nav.xhtml"·media-type="application/xhtml+xml"·properties="nav·scripted"/> | 10 | ····<item·id="nav"·href="nav.xhtml"·media-type="application/xhtml+xml"·properties="nav·scripted"/> |
| 11 | ····<item·id="cover"·href="title.xhtml"·media-type="application/xhtml+xml"·properties="scripted"/> | 11 | ····<item·id="cover"·href="title.xhtml"·media-type="application/xhtml+xml"·properties="scripted"/> |
| 12 | ····<item·id="notes"·href="notes.xhtml"·media-type="application/xhtml+xml"·properties="scripted"/> | 12 | ····<item·id="notes"·href="notes.xhtml"·media-type="application/xhtml+xml"·properties="scripted"/> |
| 13 | ····<item·id="chapter"·href="chapter.xhtml"·media-type="application/xhtml+xml"·properties="scripted"/> | 13 | ····<item·id="chapter"·href="chapter.xhtml"·media-type="application/xhtml+xml"·properties="scripted"/> |
| 14 | ····<item·id="gl"·href="gl.xhtml"·media-type="application/xhtml+xml"·properties="scripted"/> | 14 | ····<item·id="gl"·href="gl.xhtml"·media-type="application/xhtml+xml"·properties="scripted"/> |
| Offset 132, 44 lines modified | Offset 132, 44 lines modified | ||
| 132 | works·like·a·regular·gen_server·module·and·creates·a·server·per·object.</p><p>NOTE:·Currently·no·form·of·inheritance·is·implemented.</p><p>The·user·module·should·export:</p><p>init(Args)·should·return<br/>{wxWindow,·State}·|·{wxWindow,·State,·Timeout}·|·ignore·|·{stop,·Reason}</p><p>Asynchronous·window·event·handling:<br/>handle_event(#wx{},·State)·should·return<br/>{noreply,·State}·|·{noreply,·State,·Timeout}·|·{stop,·Reason,·State}</p><p>The·user·module·can·export·the·following·callback·functions:</p><p>handle_call(Msg,·{From,·Tag},·State)·should·return<br/>{reply,·Reply,·State}·|·{reply,·Reply,·State,·Timeout}·|·{noreply,·State} | 132 | works·like·a·regular·gen_server·module·and·creates·a·server·per·object.</p><p>NOTE:·Currently·no·form·of·inheritance·is·implemented.</p><p>The·user·module·should·export:</p><p>init(Args)·should·return<br/>{wxWindow,·State}·|·{wxWindow,·State,·Timeout}·|·ignore·|·{stop,·Reason}</p><p>Asynchronous·window·event·handling:<br/>handle_event(#wx{},·State)·should·return<br/>{noreply,·State}·|·{noreply,·State,·Timeout}·|·{stop,·Reason,·State}</p><p>The·user·module·can·export·the·following·callback·functions:</p><p>handle_call(Msg,·{From,·Tag},·State)·should·return<br/>{reply,·Reply,·State}·|·{reply,·Reply,·State,·Timeout}·|·{noreply,·State} |
| 133 | |·{noreply,·State,·Timeout}·|·{stop,·Reason,·Reply,·State}</p><p>handle_cast(Msg,·State)·should·return<br/>{noreply,·State}·|·{noreply,·State,·Timeout}·|·{stop,·Reason,·State}</p><p>If·the·above·are·not·exported·but·called,·the·wx_object·process·will·crash.·The | 133 | |·{noreply,·State,·Timeout}·|·{stop,·Reason,·Reply,·State}</p><p>handle_cast(Msg,·State)·should·return<br/>{noreply,·State}·|·{noreply,·State,·Timeout}·|·{stop,·Reason,·State}</p><p>If·the·above·are·not·exported·but·called,·the·wx_object·process·will·crash.·The |
| 134 | user·module·can·also·export:</p><p>Info·is·message·e.g.·{'EXIT',·P,·R},·{nodedown,·N},·...<br/>handle_info(Info,·State)·should·return·,·...<br/>{noreply,·State}·|·{noreply,·State,·Timeout}·|·{stop,·Reason,·State}</p><p>If·a·message·is·sent·to·the·wx_object·process·when·handle_info·is·not·exported, | 134 | user·module·can·also·export:</p><p>Info·is·message·e.g.·{'EXIT',·P,·R},·{nodedown,·N},·...<br/>handle_info(Info,·State)·should·return·,·...<br/>{noreply,·State}·|·{noreply,·State,·Timeout}·|·{stop,·Reason,·State}</p><p>If·a·message·is·sent·to·the·wx_object·process·when·handle_info·is·not·exported, |
| 135 | the·message·will·be·dropped·and·ignored.</p><p>When·stop·is·returned·in·one·of·the·functions·above·with·Reason·=·normal·| | 135 | the·message·will·be·dropped·and·ignored.</p><p>When·stop·is·returned·in·one·of·the·functions·above·with·Reason·=·normal·| |
| 136 | shutdown·|·Term,·terminate(State)·is·called.·It·lets·the·user·module·clean·up, | 136 | shutdown·|·Term,·terminate(State)·is·called.·It·lets·the·user·module·clean·up, |
| 137 | it·is·always·called·when·server·terminates·or·when·wx_object()·in·the·driver·is | 137 | it·is·always·called·when·server·terminates·or·when·wx_object()·in·the·driver·is |
| 138 | deleted.·If·the·Parent·process·terminates·the·Module:terminate/2·function·is | 138 | deleted.·If·the·Parent·process·terminates·the·Module:terminate/2·function·is |
| 139 | called.<br/>terminate(Reason,·State)</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··</span><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 139 | called.<br/>terminate(Reason,·State)</p><p>Example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">··</span><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="3429412045-1">(</span><span·class="ss">myDialog</span><span·class="p"·data-group-id="3429412045-1">)</span><span·class="p">.</span><span·class="w"> |
| 140 | </span><span·class="w">··</span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 140 | </span><span·class="w">··</span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="3429412045-2">(</span><span·class="p"·data-group-id="3429412045-3">[</span><span·class="ss">new</span><span·class="p">/</span><span·class="mi">2</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">show</span><span·class="p">/</span><span[·...·truncated·by·diffoscope;·len:·242,·SHA:·d79445f67747e65a7361af2ea25d4dc399fc58ddf42f0d32bb1900f46997d987·...·]-2">)</span><span·class="p">.</span><span·class="w">··</span><span·class="c1">%%·API</span><span·class="w"> |
| 141 | </span><span·class="w">··</span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 141 | </span><span·class="w">··</span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="3429412045-4">(</span><span·class="p"·data-group-id="3429412045-5">[</span><span·class="ss">init</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">handle_call</span><span·class="p">/</span><span·class="mi">3</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">handle_event</span><span·class="p">/</span><span·class="mi">2</span><span·class="p">,</span><span·class="w"> |
| 142 | ···········</span><span·class="ss">handle_info</span><span·class="p">/</span><span·class="mi">2</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">code_change</span><span·class="p">/</span><span·class="mi">3</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">terminate</span><span·class="p">/</span><span·class="mi">2</span><span·class="p"·data-group-id=" | 142 | ···········</span><span·class="ss">handle_info</span><span·class="p">/</span><span·class="mi">2</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">code_change</span><span·class="p">/</span><span·class="mi">3</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">terminate</span><span·class="p">/</span><span·class="mi">2</span><span·class="p"·data-group-id="3429412045-5">]</span><span·class="p"·data-group-id="3429412045-4">)</span><span·class="p">.</span><span·class="w"> |
| 143 | ···········</span><span·class="ss">new</span><span·class="p">/</span><span·class="mi">2</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">showModal</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">destroy</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">]</span><span·class="p">)</span><span·class="p">.</span><span·class="w">··</span><span·class="c1">%%·Callbacks</span><span·class="w"> | 143 | ···········</span><span·class="ss">new</span><span·class="p">/</span><span·class="mi">2</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">showModal</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">destroy</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">]</span><span·class="p">)</span><span·class="p">.</span><span·class="w">··</span><span·class="c1">%%·Callbacks</span><span·class="w"> |
| 144 | ··</span><span·class="c1">%%·Client·API</span><span·class="w"> | 144 | ··</span><span·class="c1">%%·Client·API</span><span·class="w"> |
| 145 | ··</span><span·class="nf">new</span><span·class="p"·data-group-id=" | 145 | ··</span><span·class="nf">new</span><span·class="p"·data-group-id="3429412045-6">(</span><span·class="n">Parent</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Msg</span><span·class="p"·data-group-id="3429412045-6">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 146 | ·····</span><span·class="nc">wx_object</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id=" | 146 | ·····</span><span·class="nc">wx_object</span><span·class="p">:</span><span·class="nf">start</span><span·class="p"·data-group-id="3429412045-7">(</span><span·class="o">?</span><span·class="n">MODULE</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="3429412045-8">[</span><span·class="n">Parent</span><span·class="p">,</span><span·class="n">Id</span><s[·...·truncated·by·diffoscope;·len:·246,·SHA:·fee89503a31487b27a10141c63bfcf45c809e970b6465a702f82640447c1488a·...·]-7">)</span><span·class="p">.</span><span·class="w"> |
| 147 | ··</span><span·class="nf">show</span><span·class="p"·data-group-id=" | 147 | ··</span><span·class="nf">show</span><span·class="p"·data-group-id="3429412045-10">(</span><span·class="n">Dialog</span><span·class="p"·data-group-id="3429412045-10">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 148 | ·····</span><span·class="nc">wx_object</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id=" | 148 | ·····</span><span·class="nc">wx_object</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id="3429412045-11">(</span><span·class="n">Dialog</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">show_modal</span><span·class="p"·data-group-id="3429412045-11">)</span><span·class="p">.</span><span·class="w"> |
| 149 | ··</span><span·class="nf">destroy</span><span·class="p"·data-group-id=" | 149 | ··</span><span·class="nf">destroy</span><span·class="p"·data-group-id="3429412045-12">(</span><span·class="n">Dialog</span><span·class="p"·data-group-id="3429412045-12">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 150 | ·····</span><span·class="nc">wx_object</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id=" | 150 | ·····</span><span·class="nc">wx_object</span><span·class="p">:</span><span·class="nf">call</span><span·class="p"·data-group-id="3429412045-13">(</span><span·class="n">Dialog</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">destroy</span><span·class="p"·data-group-id="3429412045-13">)</span><span·class="p">.</span><span·class="w"> |
| 151 | ··</span><span·class="c1">%%·Server·Implementation·ala·gen_server</span><span·class="w"> | 151 | ··</span><span·class="c1">%%·Server·Implementation·ala·gen_server</span><span·class="w"> |
| 152 | ··</span><span·class="nf">init</span><span·class="p"·data-group-id=" | 152 | ··</span><span·class="nf">init</span><span·class="p"·data-group-id="3429412045-14">(</span><span·class="p"·data-group-id="3429412045-15">[</span><span·class="n">Parent</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Str</span><span·class="p"·data-group-id="3429412045-15">]</span><span·class="p"·data-g[·...·truncated·by·diffoscope;·len:·19,·SHA:·43028ae0534d74b8e220dd9e2690a65ef6177781642a39df6a386dd820e1e704·...·]-14">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 153 | ·····</span><span·class="n">Dialog</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">wxDialog</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id=" | 153 | ·····</span><span·class="n">Dialog</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">wxDialog</span><span·class="p">:</span><span·class="nf">new</span><span·class="p"·data-group-id="3429412045-16">(</span><span·class="n">Parent</span><span·class="p">,</span><span·class="w">·</span><span·class="mi">42</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"Testing"</span><span·class="p">,</span><span·class="w">[·...·truncated·by·diffoscope;·len:·157,·SHA:·eff350999be5349e09cb3a6e3e44bbd6f27dbf66ca334becffdcaf6760722614·...·]-16">)</span><span·class="p">,</span><span·class="w"> |
| 154 | ·····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 154 | ·····</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 155 | ·····</span><span·class="nc">wxDialog</span><span·class="p">:</span><span·class="nf">connect</span><span·class="p"·data-group-id=" | 155 | ·····</span><span·class="nc">wxDialog</span><span·class="p">:</span><span·class="nf">connect</span><span·class="p"·data-group-id="3429412045-18">(</span><span·class="n">Dialog</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">command_button_clicked</span><span·class="p"·data-group-id="3429412045-18">)</span><span·class="p">,</span><span·class="w"> |
| 156 | ·····</span><span·class="p"·data-group-id=" | 156 | ·····</span><span·class="p"·data-group-id="3429412045-19">{</span><span·class="n">Dialog</span><span·class="p">,</span><span·class="w">·</span><span·class="n">MyState</span><span·class="p"·data-group-id="3429412045-19">}</span><span·class="p">.</span><span·class="w"> |
| 157 | ··</span><span·class="nf">handle_call</span><span·class="p"·data-group-id=" | 157 | ··</span><span·class="nf">handle_call</span><span·class="p"·data-group-id="3429412045-20">(</span><span·class="ss">show</span><span·class="p">,</span><span·class="w">·</span><span·class="p">_</span><span·class="n">From</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·11,·SHA:·4b987371b4b73ffc467e6d39cdeeba18882e3fa51d969523ca212c3f159c0964·...·]-20">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 158 | ·····</span><span·class="nc">wxDialog</span><span·class="p">:</span><span·class="nf">show</span><span·class="p"·data-group-id=" | 158 | ·····</span><span·class="nc">wxDialog</span><span·class="p">:</span><span·class="nf">show</span><span·class="p"·data-group-id="3429412045-21">(</span><span·class="n">State</span><span·class="o">#</span><span·class="ss">state</span><span·class="p">.</span><span·class="ss">win</span><span·class="p"·data-group-id="3429412045-21">)</span><span·class="p">,</span><span·class="w"> |
| 159 | ·····</span><span·class="p"·data-group-id=" | 159 | ·····</span><span·class="p"·data-group-id="3429412045-22">{</span><span·class="ss">reply</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="p"·data-group-id="3429412045-22">}</span><span·class="p">;</span><span·class="w"> |
| 160 | ··</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 160 | ··</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 161 | ··</span><span·class="nf">handle_event</span><span·class="p"·data-group-id=" | 161 | ··</span><span·class="nf">handle_event</span><span·class="p"·data-group-id="3429412045-23">(</span><span·class="o">#</span><span·class="ss">wx</span><span·class="p"·data-group-id="3429412045-24">{</span><span·class="p"·data-group-id="3429412045-24">}</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span[·...·truncated·by·diffoscope;·len:·42,·SHA:·39590a2a4af5966c1a619f51c15ca03182edb934a46d5a5f3f224eb246ca6747·...·]-23">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 162 | ·····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 162 | ·····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="3429412045-25">(</span><span·class="s">"Users·clicked·button</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="p"·data-group-id="3429412045-26">[</span><span·class="p"·data-group-id="3429412045-26">]</sp[·...·truncated·by·diffoscope;·len:·44,·SHA:·75ffcb2ff4d5afda88c66cf8588c255368527998ab062d76c535b5016f94bd19·...·]-25">)</span><span·class="p">,</span><span·class="w"> |
| 163 | ·····</span><span·class="p"·data-group-id=" | 163 | ·····</span><span·class="p"·data-group-id="3429412045-27">{</span><span·class="ss">noreply</span><span·class="p">,</span><span·class="w">·</span><span·class="n">State</span><span·class="p"·data-group-id="3429412045-27">}</span><span·class="p">;</span><span·class="w"> |
| 164 | ··</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><h2·id="module-data-types"·class="section-heading"> | 164 | ··</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span></code></pre><h2·id="module-data-types"·class="section-heading"> |
| 165 | ··<a·href="#module-data-types"·class="hover-link"> | 165 | ··<a·href="#module-data-types"·class="hover-link"> |
| 166 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 166 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 167 | ··</a> | 167 | ··</a> |
| 168 | ··<span·class="text">DATA·TYPES</span> | 168 | ··<span·class="text">DATA·TYPES</span> |
| 169 | </h2> | 169 | </h2> |
| 170 | <ul><li><p><strong><a·href=""·id="type-request_id"></a>·request_id()·=·term()</strong></p></li><li><p><strong><a·href=""·id="type-server_ref"></a>·server_ref()·= | 170 | <ul><li><p><strong><a·href=""·id="type-request_id"></a>·request_id()·=·term()</strong></p></li><li><p><strong><a·href=""·id="type-server_ref"></a>·server_ref()·= |
| Offset 142, 100 lines modified | Offset 142, 100 lines modified | ||
| 142 | forms·are·<code·class="inline">{Tag, Fun}</code>,·or·<code·class="inline">{Tag, Fun, LocalState}</code>.·The·second·form·can·be·used | 142 | forms·are·<code·class="inline">{Tag, Fun}</code>,·or·<code·class="inline">{Tag, Fun, LocalState}</code>.·The·second·form·can·be·used |
| 143 | to·initialize·the·state·variable·in·question.</p><h4>1.1·User·State</h4><p>All·customization·functions·are·free·to·access·a·"User·state"·variable.·Care | 143 | to·initialize·the·state·variable·in·question.</p><h4>1.1·User·State</h4><p>All·customization·functions·are·free·to·access·a·"User·state"·variable.·Care |
| 144 | must·of·course·be·taken·to·coordinate·the·use·of·this·state.·It·is·recommended | 144 | must·of·course·be·taken·to·coordinate·the·use·of·this·state.·It·is·recommended |
| 145 | that·functions,·which·do·not·really·have·anything·to·contribute·to·the·"global" | 145 | that·functions,·which·do·not·really·have·anything·to·contribute·to·the·"global" |
| 146 | user·state,·use·their·own·state·variable·instead.·Another·option·(used·in·e.g. | 146 | user·state,·use·their·own·state·variable·instead.·Another·option·(used·in·e.g. |
| 147 | <code·class="inline">xmerl_eventp.erl</code>)·is·for·customization·functions·to·share·one·of·the·local | 147 | <code·class="inline">xmerl_eventp.erl</code>)·is·for·customization·functions·to·share·one·of·the·local |
| 148 | states·(in·<code·class="inline">xmerl_eventp.erl</code>,·the·continuation·function·and·the·fetch·function | 148 | states·(in·<code·class="inline">xmerl_eventp.erl</code>,·the·continuation·function·and·the·fetch·function |
| 149 | both·access·the·cont_state.)</p><p>Functions·to·access·user·state:</p><ul><li>··<code·class="inline">xmerl_scan:user_state(GlobalState)</code></li><li>··<code·class="inline">xmerl_scan:user_state(UserState,·GlobalState)</code></li></ul><h4>1.2·Event·Function</h4><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 149 | both·access·the·cont_state.)</p><p>Functions·to·access·user·state:</p><ul><li>··<code·class="inline">xmerl_scan:user_state(GlobalState)</code></li><li>··<code·class="inline">xmerl_scan:user_state(UserState,·GlobalState)</code></li></ul><h4>1.2·Event·Function</h4><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="1796399864-1">{</span><span·class="ss">event_fun</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="1796399864-2">(</span><span·class="p"·data-group-id="1796399864-2">)</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·494,·SHA:·f2e371d2f991049a2d36392cd30e037242f549250b0e008aecb3387dfcec5e79·...·]-3">}</span></code></pre><p>The·event·function·is·called·at·the·beginning·and·at·the·end·of·a·parsed·entity. |
| 150 | It·has·the·following·format·and·semantics:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="p"·data-group-id="9 | 150 | It·has·the·following·format·and·semantics:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="p"·data-group-id="9840827064-1">(</span><span·class="n">Event</span><span·class="p">,</span><span·class="w">·</span><span·class="n">GlobalState</span><span·class="p"·data-group-id="9840827064-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 151 | ···</span><span·class="n">EventState</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">xmerl_scan</span><span·class="p">:</span><span·class="nf">event_state</span><span·class="p"·data-group-id="9 | 151 | ···</span><span·class="n">EventState</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">xmerl_scan</span><span·class="p">:</span><span·class="nf">event_state</span><span·class="p"·data-group-id="9840827064-2">(</span><span·class="n">GlobalState</span><span·class="p"·data-group-id="9840827064-2">)</span><span·class="p">,</span><span·class="w"> |
| 152 | ···</span><span·class="n">EventState2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">foo</span><span·class="p"·data-group-id="9 | 152 | ···</span><span·class="n">EventState2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">foo</span><span·class="p"·data-group-id="9840827064-3">(</span><span·class="n">Event</span><span·class="p">,</span><span·class="w">·</span><span·class="n">EventState</span><span·class="p"·data-group-id="9840827064-3">)</span><span·class="p">,</span><span·class="w"> |
| 153 | ···</span><span·class="n">GlobalState2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">xmerl_scan</span><span·class="p">:</span><span·class="nf">event_state</span><span·class="p"·data-group-id="9 | 153 | ···</span><span·class="n">GlobalState2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">xmerl_scan</span><span·class="p">:</span><span·class="nf">event_state</span><span·class="p"·data-group-id="9840827064-4">(</span><span·class="n">EventState2</span><span·class="p">,</span><span·class="w">·</span><span·class="n">GlobalState</span><span·class="p"·data-group-id="9840827064-4">)</span><span·class="w"> |
| 154 | </span><span·class="k">end</span><span·class="p">.</span></code></pre><h4>1.3·Hook·Function</h4><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8 | 154 | </span><span·class="k">end</span><span·class="p">.</span></code></pre><h4>1.3·Hook·Function</h4><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8100369302-1">{</span><span·class="ss">hook_fun</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="8100369302-2">(</span><span·class="p"·data-group-id="8100369302-2">)</span><span·class="p"·data-g[·...·truncated·by·diffoscope;·len:·490,·SHA:·2bde06b8d451377a311fa063e957e44de25b37580e61ac34ba0c2f30033bdc6f·...·]-3">}</span></code></pre><p>The·hook·function·is·called·when·the·processor·has·parsed·a·complete·entity. |
| 155 | Format·and·semantics:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="p"·data-group-id=" | 155 | Format·and·semantics:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="p"·data-group-id="2629400171-1">(</span><span·class="n">Entity</span><span·class="p">,</span><span·class="w">·</span><span·class="n">GlobalState</span><span·class="p"·data-group-id="2629400171-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 156 | ···</span><span·class="n">HookState</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">xmerl_scan</span><span·class="p">:</span><span·class="nf">hook_state</span><span·class="p"·data-group-id=" | 156 | ···</span><span·class="n">HookState</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">xmerl_scan</span><span·class="p">:</span><span·class="nf">hook_state</span><span·class="p"·data-group-id="2629400171-2">(</span><span·class="n">GlobalState</span><span·class="p"·data-group-id="2629400171-2">)</span><span·class="p">,</span><span·class="w"> |
| 157 | ···</span><span·class="p"·data-group-id=" | 157 | ···</span><span·class="p"·data-group-id="2629400171-3">{</span><span·class="n">TransformedEntity</span><span·class="p">,</span><span·class="w">·</span><span·class="n">HookState2</span><span·class="p"·data-group-id="2629400171-3">}</span><span·class="w">·</span><span·class="o">=</span><span·class=[·...·truncated·by·diffoscope;·len:·241,·SHA:·b613f1c910779eb3394d63b4f941d7e041686ccfb0d3d05863822ee125d33311·...·]1-4">)</span><span·class="p">,</span><span·class="w"> |
| 158 | ···</span><span·class="n">GlobalState2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">xmerl_scan</span><span·class="p">:</span><span·class="nf">hook_state</span><span·class="p"·data-group-id=" | 158 | ···</span><span·class="n">GlobalState2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">xmerl_scan</span><span·class="p">:</span><span·class="nf">hook_state</span><span·class="p"·data-group-id="2629400171-5">(</span><span·class="n">HookState2</span><span·class="p">,</span><span·class="w">·</span><span·class="n">GlobalState</span><span·class="p"·data-group-id="2629400171-5">)</span><span·class="p">,</span><span·class="w"> |
| 159 | ···</span><span·class="p"·data-group-id=" | 159 | ···</span><span·class="p"·data-group-id="2629400171-6">{</span><span·class="n">TransformedEntity</span><span·class="p">,</span><span·class="w">·</span><span·class="n">GlobalState2</span><span·class="p"·data-group-id="2629400171-6">}</span><span·class="w"> |
| 160 | </span><span·class="k">end</span><span·class="p">.</span></code></pre><p>The·relationship·between·the·event·function,·the·hook·function·and·the | 160 | </span><span·class="k">end</span><span·class="p">.</span></code></pre><p>The·relationship·between·the·event·function,·the·hook·function·and·the |
| 161 | accumulator·function·is·as·follows:</p><ol><li>·The·event·function·is·first·called·with·an·'ended'·event·for·the·parsed | 161 | accumulator·function·is·as·follows:</p><ol><li>·The·event·function·is·first·called·with·an·'ended'·event·for·the·parsed |
| 162 | entity.</li><li>·The·hook·function·is·called,·possibly·re-formatting·the·entity.</li><li>·The·acc·function·is·called·in·order·to·(optionally)·add·the·re-formatted | 162 | entity.</li><li>·The·hook·function·is·called,·possibly·re-formatting·the·entity.</li><li>·The·acc·function·is·called·in·order·to·(optionally)·add·the·re-formatted |
| 163 | entity·to·the·contents·of·its·parent·element.</li></ol><h4>1.4·Fetch·Function</h4><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 163 | entity·to·the·contents·of·its·parent·element.</li></ol><h4>1.4·Fetch·Function</h4><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="8464481587-1">{</span><span·class="ss">fetch_fun</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="8464481587-2">(</span><span·class="p"·data-group-id="8464481587-2">)</span><span·class="p"·data[·...·truncated·by·diffoscope;·len:·494,·SHA:·b76364026c0b32a9c2dadaf4d8387a139b5384dd2ddf6b1ddae715c6ddc51a7c·...·]-3">}</span></code></pre><p>The·fetch·function·is·called·in·order·to·fetch·an·external·resource·(e.g.·a |
| 164 | DTD).</p><p>The·fetch·function·can·respond·with·three·different·return·values:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Result</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w"> | 164 | DTD).</p><p>The·fetch·function·can·respond·with·three·different·return·values:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Result</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w"> |
| 165 | ···</span><span·class="p"·data-group-id=" | 165 | ···</span><span·class="p"·data-group-id="4729514640-1">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4729514640-2">{</span><span·class="ss">file</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Filename</span>[·...·truncated·by·diffoscope;·len:·179,·SHA:·10dd7ecee2bbabfc1404ce88822ac4caa4171751a79dcfb4e3ebba1c07b6273a·...·]-1">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 166 | ···</span><span·class="p"·data-group-id=" | 166 | ···</span><span·class="p"·data-group-id="4729514640-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="p"·data-group-id="4729514640-4">{</span><span·class="ss">string</span><span·class="p">,</span><span·class="w">·</span><span·class="n">String</span>[·...·truncated·by·diffoscope;·len:·179,·SHA:·6e55a8af3c17e3b77ce50580caf08b88671dc12fe6f3bc2d9c74a4c64dac8dba·...·]-3">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 167 | ···</span><span·class="p"·data-group-id=" | 167 | ···</span><span·class="p"·data-group-id="4729514640-5">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">not_fetched</span><span·class="p">,</span><span·class="w">·</span><span·class="n">NewGlobalState</span><span·class="p"·data-group-id="472951464[·...·truncated·by·diffoscope;·len:·330,·SHA:·bb9051b009ab74fac6ee5b8be4b0b95b4498cf565b5fd8eed4c449238d92b57d·...·]0-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 168 | ···</span><span·class="n">FetchState</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">xmerl_scan</span><span·class="p">:</span><span·class="nf">fetch_state</span><span·class="p"·data-group-id="8 | 168 | ···</span><span·class="n">FetchState</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">xmerl_scan</span><span·class="p">:</span><span·class="nf">fetch_state</span><span·class="p"·data-group-id="4856976960-2">(</span><span·class="n">GlobalState</span><span·class="p"·data-group-id="4856976960-2">)</span><span·class="p">,</span><span·class="w"> |
| 169 | ···</span><span·class="n">Result</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">foo</span><span·class="p"·data-group-id="8 | 169 | ···</span><span·class="n">Result</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">foo</span><span·class="p"·data-group-id="4856976960-3">(</span><span·class="n">URI</span><span·class="p">,</span><span·class="w">·</span><span·class="n">FetchState</span><span·class="p"·data-group-id="4856976960-3">)</span><span·class="p">.</span><span·class="w">··</span><span·class="c1">%·Result·being·one·of·the·above</span><span·class="w"> |
| 170 | </span><span·class="k">end</span><span·class="p">.</span></code></pre><h4>1.5·Continuation·Function</h4><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 170 | </span><span·class="k">end</span><span·class="p">.</span></code></pre><h4>1.5·Continuation·Function</h4><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="3984989015-1">{</span><span·class="ss">continuation_fun</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="3984989015-2">(</span><span·class="p"·data-group-id="3984989015-2">)</span><span·class="[·...·truncated·by·diffoscope;·len:·515,·SHA:·701061181cb855e5d068bde89817eab6e98822b905052972e3269242a36becae·...·]-3">}</span></code></pre><p>The·continuation·function·is·called·when·the·parser·encounters·the·end·of·the |
| 171 | byte·stream.·Format·and·semantics:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="p"·data-group-id=" | 171 | byte·stream.·Format·and·semantics:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="p"·data-group-id="1968970473-1">(</span><span·class="n">Continue</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Exception</span><span·class="p">,</span><span·class="w">·</span><span·class="n">GlobalState</span><span·class="p"·data-group-id="1968970473-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 172 | ···</span><span·class="n">ContState</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">xmerl_scan</span><span·class="p">:</span><span·class="nf">cont_state</span><span·class="p"·data-group-id=" | 172 | ···</span><span·class="n">ContState</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">xmerl_scan</span><span·class="p">:</span><span·class="nf">cont_state</span><span·class="p"·data-group-id="1968970473-2">(</span><span·class="n">GlobalState</span><span·class="p"·data-group-id="1968970473-2">)</span><span·class="p">,</span><span·class="w"> |
| 173 | ···</span><span·class="p"·data-group-id=" | 173 | ···</span><span·class="p"·data-group-id="1968970473-3">{</span><span·class="n">Result</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ContState2</span><span·class="p"·data-group-id="1968970473-3">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span[·...·truncated·by·diffoscope;·len:·165,·SHA:·c2d13275c534b6487e3259f2cfef54169c3b62348f1de5079427be9acdf0041e·...·]-4">)</span><span·class="p">,</span><span·class="w"> |
| 174 | ···</span><span·class="k">case</span><span·class="w">·</span><span·class="n">Result</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> | 174 | ···</span><span·class="k">case</span><span·class="w">·</span><span·class="n">Result</span><span·class="w">·</span><span·class="k">of</span><span·class="w"> |
| 175 | ······</span><span·class="p"·data-group-id=" | 175 | ······</span><span·class="p"·data-group-id="1968970473-5">[</span><span·class="p"·data-group-id="1968970473-5">]</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 176 | ·········</span><span·class="n">GlobalState2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">xmerl_scan</span><span·class="p">:</span><span·class="nf">cont_state</span><span·class="p"·data-group-id=" | 176 | ·········</span><span·class="n">GlobalState2</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">xmerl_scan</span><span·class="p">:</span><span·class="nf">cont_state</span><span·class="p"·data-group-id="1968970473-6">(</span><span·class="n">ContState2</span><span·class="p">,</span><span·class="w">·</span><span·class="n">GlobalState</span><span·class="p"·data-group-id="1968970473-6">)</span><span·class="p">,</span><span·class="w"> |
| 177 | ·········</span><span·class="n">Exception</span><span·class="p"·data-group-id=" | 177 | ·········</span><span·class="n">Exception</span><span·class="p"·data-group-id="1968970473-7">(</span><span·class="n">GlobalState2</span><span·class="p"·data-group-id="1968970473-7">)</span><span·class="p">;</span><span·class="w"> |
| 178 | ······</span><span·class="n">MoreBytes</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> | 178 | ······</span><span·class="n">MoreBytes</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 179 | ·········</span><span·class="p"·data-group-id=" | 179 | ·········</span><span·class="p"·data-group-id="1968970473-8">{</span><span·class="n">MoreBytes2</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Rest</span><span·class="p"·data-group-id="1968970473-8">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·171,·SHA:·6b54a722d7f94ae75d8362282f3d8910c226f9d0da442b3b87691f45addbf9b7·...·]-9">)</span><span·class="p">,</span><span·class="w"> |
| 180 | ·········</span><span·class="n">ContState3</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">update_cont_state</span><span·class="p"·data-group-id=" | 180 | ·········</span><span·class="n">ContState3</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nf">update_cont_state</span><span·class="p"·data-group-id="1968970473-10">(</span><span·class="n">Rest</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ContState2</span><span·class="p"·data-group-id="1968970473-10">)</span><span·class="p">,</span><span·class="w"> |
| 181 | ·········</span><span·class="n">GlobalState3</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">xmerl_scan</span><span·class="p">:</span><span·class="nf">cont_state</span><span·class="p"·data-group-id=" | 181 | ·········</span><span·class="n">GlobalState3</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">xmerl_scan</span><span·class="p">:</span><span·class="nf">cont_state</span><span·class="p"·data-group-id="1968970473-11">(</span><span·class="n">ContState3</span><span·class="p">,</span><span·class="w">·</span><span·class="n">GlobalState</span><span·class="p"·data-group-id="1968970473-11">)</span><span·class="p">,</span><span·class="w"> |
| 182 | ·········</span><span·class="n">Continue</span><span·class="p"·data-group-id=" | 182 | ·········</span><span·class="n">Continue</span><span·class="p"·data-group-id="1968970473-12">(</span><span·class="n">MoreBytes2</span><span·class="p">,</span><span·class="w">·</span><span·class="n">GlobalState3</span><span·class="p"·data-group-id="1968970473-12">)</span><span·class="w"> |
| 183 | ···</span><span·class="k">end</span><span·class="w"> | 183 | ···</span><span·class="k">end</span><span·class="w"> |
| 184 | </span><span·class="k">end</span><span·class="p">.</span></code></pre><h4>1.6·Rules·Functions</h4><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 184 | </span><span·class="k">end</span><span·class="p">.</span></code></pre><h4>1.6·Rules·Functions</h4><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="4131814707-1">{</span><span·class="ss">rules</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ReadFun</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-i[·...·truncated·by·diffoscope;·len:·483,·SHA:·b574f873318e605c4f51de69ee33b48bad9cb2c89d253984e037b4360d6aeed7·...·]7-1">}</span><span·class="w">·</span><span·class="p">|</span><span·class="w"> |
| 185 | </span><span·class="p"·data-group-id=" | 185 | </span><span·class="p"·data-group-id="4131814707-4">{</span><span·class="ss">rules</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Table</span><span·class="w">·</span><span·class="p">:</span><span·class="w">·</span><span·class="nf">ets</span><span·class="p"·data-group-id=[·...·truncated·by·diffoscope;·len:·116,·SHA:·1dd64108adca0a1cc7d91011f1375488a8a2b204e94279d69efa4e1607e9f6ca·...·]7-4">}</span></code></pre><p>The·rules·functions·take·care·of·storing·scanner·information·in·a·rules |
| 186 | database.·User-provided·rules·functions·may·opt·to·store·the·information·in | 186 | database.·User-provided·rules·functions·may·opt·to·store·the·information·in |
| 187 | mnesia,·or·perhaps·in·the·user_state(RulesState).</p><p>The·following·modes·exist:</p><ul><li>··If·the·user·doesn't·specify·an·option,·the·scanner·creates·an·ets·table,·and | 187 | mnesia,·or·perhaps·in·the·user_state(RulesState).</p><p>The·following·modes·exist:</p><ul><li>··If·the·user·doesn't·specify·an·option,·the·scanner·creates·an·ets·table,·and |
| 188 | uses·built-in·functions·to·read·and·write·data·to·it.·When·the·scanner·is | 188 | uses·built-in·functions·to·read·and·write·data·to·it.·When·the·scanner·is |
| 189 | done,·the·ets·table·is·deleted.</li><li>··If·the·user·specifies·an·ets·table·via·the·<code·class="inline">{rules, Table}</code>·option,·the | 189 | done,·the·ets·table·is·deleted.</li><li>··If·the·user·specifies·an·ets·table·via·the·<code·class="inline">{rules, Table}</code>·option,·the |
| 190 | scanner·uses·this·table.·When·the·scanner·is·done,·it·does·<em>not</em>·delete·the | 190 | scanner·uses·this·table.·When·the·scanner·is·done,·it·does·<em>not</em>·delete·the |
| 191 | table.</li><li>··If·the·user·specifies·read·and·write·functions,·the·scanner·will·use·them | 191 | table.</li><li>··If·the·user·specifies·read·and·write·functions,·the·scanner·will·use·them |
| 192 | instead.</li></ul><p>The·format·for·the·read·and·write·functions·are·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="n">WriteFun</span><span·class="p"·data-group-id="9 | 192 | instead.</li></ul><p>The·format·for·the·read·and·write·functions·are·as·follows:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">·</span><span·class="n">WriteFun</span><span·class="p"·data-group-id="9824709354-1">(</span><span·class="n">Context</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Definition</span><span·class="p">,</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·74,·SHA:·32d5a89eed1e4c4d38cd55d2e69e9d012359b81e8819af23580ac53b9ef6e997·...·]4-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">NewScannerState</span><span·class="p">.</span><span·class="w"> |
| 193 | ·</span><span·class="n">ReadFun</span><span·class="p"·data-group-id="9 | 193 | ·</span><span·class="n">ReadFun</span><span·class="p"·data-group-id="9824709354-2">(</span><span·class="n">Context</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Name</span><span·class="p">,</span><span·class="w">·</span><span·class="n">ScannerState</span><span·class="p"·data-group-id="9824709354-2">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Definition</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">undefined</span><span·class="p">.</span></code></pre><p>Here·is·a·summary·of·the·data·objects·currently·being·written·by·the·scanner:</p><table><thead><tr><th·style="text-align:·left;">Context</th><th·style="text-align:·left;">Key·Value</th><th·style="text-align:·left;">Definition</th></tr></thead><tbody><tr><td·style="text-align:·left;">notation</td><td·style="text-align:·left;">NotationName</td><td·style="text-align:·left;"><code·class="inline">{system, SL}·|·{public, PIDL, SL}</code></td></tr><tr><td·style="text-align:·left;">elem_def</td><td·style="text-align:·left;">ElementName</td><td·style="text-align:·left;"><code·class="inline">#xmlElement{content·=·ContentSpec}</code></td></tr><tr><td·style="text-align:·left;">parameter_entity</td><td·style="text-align:·left;">PEName</td><td·style="text-align:·left;"><code·class="inline">PEDef</code></td></tr><tr><td·style="text-align:·left;">entity</td><td·style="text-align:·left;">EntityName</td><td·style="text-align:·left;"><code·class="inline">EntityDef</code></td></tr></tbody></table><p><strong>·Table·1:</strong>·Scanner·data·objects</p><p>where</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">ContentSpec</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="ss">empty</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">any</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="n">ElemContent</span><span·class="w"> |
| 194 | </span><span·class="n">ElemContent</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="p"·data-group-id="0 | 194 | </span><span·class="n">ElemContent</span><span·class="w">·</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="p"·data-group-id="5084419723-1">{</span><span·class="n">Mode</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Elems</span><span·class="p"·data-group-id="5084419723-1">}</span><span·class="w"> |
| 195 | </span><span·class="n">Mode</span><span·class="w">········</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="ss">seq</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">choice</span><span·class="w"> | 195 | </span><span·class="n">Mode</span><span·class="w">········</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="ss">seq</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">choice</span><span·class="w"> |
| 196 | </span><span·class="n">Elems</span><span·class="w">·······</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="p"·data-group-id="0 | 196 | </span><span·class="n">Elems</span><span·class="w">·······</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="p"·data-group-id="5084419723-2">[</span><span·class="n">Elem</span><span·class="p"·data-group-id="5084419723-2">]</span><span·class="w"> |
| 197 | </span><span·class="n">Elem</span><span·class="w">········</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="ss">'#PCDATA'</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="n">Name</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="n">ElemContent</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="0 | 197 | </span><span·class="n">Elem</span><span·class="w">········</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="ss">'#PCDATA'</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="n">Name</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="n">ElemContent</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="p"·data-group-id="5084419723-3">{</span><span·class="n">Occurrence</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Elems</span><span·class="p"·data-group-id="5084419723-3">}</span><span·class="w"> |
| 198 | </span><span·class="n">Occurrence</span><span·class="w">··</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="ss">'*'</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">'?'</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">'+'</span></code></pre><p>NOTE:·<em>When·<Elem>·is·not·wrapped·with·<Occurrence>,·(Occurrence·=·once)·is | 198 | </span><span·class="n">Occurrence</span><span·class="w">··</span><span·class="p">:</span><span·class="p">:=</span><span·class="w">·</span><span·class="ss">'*'</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">'?'</span><span·class="w">·</span><span·class="p">|</span><span·class="w">·</span><span·class="ss">'+'</span></code></pre><p>NOTE:·<em>When·<Elem>·is·not·wrapped·with·<Occurrence>,·(Occurrence·=·once)·is |
| 199 | implied.</em></p><h4>1.7·Accumulator·Function</h4><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id=" | 199 | implied.</em></p><h4>1.7·Accumulator·Function</h4><pre><code·class="makeup·erlang"·translate="no"><span·class="p"·data-group-id="2103929885-1">{</span><span·class="ss">acc_fun</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="2103929885-2">(</span><span·class="p"·data-group-id="2103929885-2">)</span><span·class="p"·data-g[·...·truncated·by·diffoscope;·len:·19,·SHA:·b80f98f959362947ef9ffe732ccecc26dd307d229a4ec7dcae331a5dc247377c·...·]-1">}</span></code></pre><p>The·accumulator·function·is·called·to·accumulate·the·contents·of·an·entity.When |
| 200 | parsing·very·large·files,·it·may·not·be·desirable·to·do·so.In·this·case,·an·acc | 200 | parsing·very·large·files,·it·may·not·be·desirable·to·do·so.In·this·case,·an·acc |
| 201 | function·can·be·provided·that·simply·doesn't·accumulate.</p><p>Note·that·it·is·possible·to·even·modify·the·parsed·entity·before·accumulating | 201 | function·can·be·provided·that·simply·doesn't·accumulate.</p><p>Note·that·it·is·possible·to·even·modify·the·parsed·entity·before·accumulating |
| 202 | it,·but·this·must·be·done·with·care.·xmerl_scan·performs·post-processing·of·the | 202 | it,·but·this·must·be·done·with·care.·xmerl_scan·performs·post-processing·of·the |
| 203 | element·for·namespace·management.·Thus,·the·element·must·keep·its·original | 203 | element·for·namespace·management.·Thus,·the·element·must·keep·its·original |
| 204 | structure·for·this·to·work.</p><p>The·acc·function·has·the·following·format·and·semantics:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·default·accumulating·acc·fun</span><span·class="w"> | 204 | structure·for·this·to·work.</p><p>The·acc·function·has·the·following·format·and·semantics:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="c1">%%·default·accumulating·acc·fun</span><span·class="w"> |
| 205 | </span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 205 | </span><span·class="nf">fun</span><span·class="p"·data-group-id="9438116001-1">(</span><span·class="n">ParsedEntity</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Acc</span><span·class="p">,</span><span·class="w">·</span><span·class="n">GlobalState</span><span·class="p"·data-group-id="9438116001-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 206 | ···</span><span·class="p"·data-group-id=" | 206 | ···</span><span·class="p"·data-group-id="9438116001-2">{</span><span·class="p"·data-group-id="9438116001-3">[</span><span·class="n">ParsedEntity</span><span·class="p">|</span><span·class="n">Acc</span><span·class="p"·data-group-id="9438116001-3">]</span><span·class="p">,</span><span·class="w">·</[·...·truncated·by·diffoscope;·len:·80,·SHA:·8a9cc902f1b902754986e99eca6636f9ad61ddd2df3aeae4d271b8502e9413d5·...·]-2">}</span><span·class="p">.</span><span·class="w"> |
| 207 | </span><span·class="c1">%%·non-accumulating·acc·fun</span><span·class="w"> | 207 | </span><span·class="c1">%%·non-accumulating·acc·fun</span><span·class="w"> |
| 208 | </span><span·class="nf">fun</span><span·class="p"·data-group-id=" | 208 | </span><span·class="nf">fun</span><span·class="p"·data-group-id="9438116001-4">(</span><span·class="n">ParsedEntity</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Acc</span><span·class="p">,</span><span·class="w">·</span><span·class="n">GlobalState</span><span·class="p"·data-group-id="9438116001-4">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 209 | ···</span><span·class="p"·data-group-id=" | 209 | ···</span><span·class="p"·data-group-id="9438116001-5">{</span><span·class="n">Acc</span><span·class="p">,</span><span·class="w">·</span><span·class="n">GlobalState</span><span·class="p"·data-group-id="9438116001-5">}</span><span·class="p">.</span></code></pre><h4>1.8·Close·Function</h4><p>The·close·function·is·called·when·a·document·(either·the·main·document·or·an |
| 210 | external·DTD)·has·been·completely·parsed.·When·xmerl_scan·was·started·using | 210 | external·DTD)·has·been·completely·parsed.·When·xmerl_scan·was·started·using |
| 211 | <code·class="inline">xmerl_scan:file/[1,2]</code>,·the·file·will·be·read·in·full,·and·closed·immediately, | 211 | <code·class="inline">xmerl_scan:file/[1,2]</code>,·the·file·will·be·read·in·full,·and·closed·immediately, |
| 212 | before·the·parsing·starts,·so·when·the·close·function·is·called,·it·will·not | 212 | before·the·parsing·starts,·so·when·the·close·function·is·called,·it·will·not |
| 213 | need·to·actually·close·the·file.·In·this·case,·the·close·function·will·be·a·good | 213 | need·to·actually·close·the·file.·In·this·case,·the·close·function·will·be·a·good |
| 214 | place·to·modify·the·state·variables.</p><p>Format·and·semantics:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="p"·data-group-id=" | 214 | place·to·modify·the·state·variables.</p><p>Format·and·semantics:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">fun</span><span·class="p"·data-group-id="9789860500-1">(</span><span·class="n">GlobalState</span><span·class="p"·data-group-id="9789860500-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 215 | ···</span><span·class="n">GlobalState1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w">··</span><span·class="c1">%·state·variables·may·be·altered</span></code></pre><h3·id="2-examples"·class="section-heading"> | 215 | ···</span><span·class="n">GlobalState1</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w">··</span><span·class="c1">%·state·variables·may·be·altered</span></code></pre><h3·id="2-examples"·class="section-heading"> |
| 216 | ··<a·href="#2-examples"·class="hover-link"> | 216 | ··<a·href="#2-examples"·class="hover-link"> |
| 217 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 217 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 218 | ··</a> | 218 | ··</a> |
| 219 | ··<span·class="text">2·Examples</span> | 219 | ··<span·class="text">2·Examples</span> |
| 220 | </h3> | 220 | </h3> |
| 221 | <p>See·<code·class="inline">xmerl_test.erl</code>·for·more·examples.</p><h4>2.1·Handling·spaces</h4><p>The·following·sample·program·illustrates·three·ways·of·scanning·a·document:</p><ol><li>·the·default·scan,·which·leaves·whitespace·untouched</li><li>·normalizing·spaces</li><li>·normalizing·spaces,·then·removing·text·elements·that·only·contain·one·space.</li></ol><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id=" | 221 | <p>See·<code·class="inline">xmerl_test.erl</code>·for·more·examples.</p><h4>2.1·Handling·spaces</h4><p>The·following·sample·program·illustrates·three·ways·of·scanning·a·document:</p><ol><li>·the·default·scan,·which·leaves·whitespace·untouched</li><li>·normalizing·spaces</li><li>·normalizing·spaces,·then·removing·text·elements·that·only·contain·one·space.</li></ol><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">module</span><span·class="p"·data-group-id="3948794058-1">(</span><span·class="ss">tmp</span><span·class="p"·data-group-id="3948794058-1">)</span><span·class="p">.</span><span·class="w"> |
| 222 | </span><span·class="w"> | 222 | </span><span·class="w"> |
| 223 | </span><span·class="p">-</span><span·class="na">include</span><span·class="p"·data-group-id=" | 223 | </span><span·class="p">-</span><span·class="na">include</span><span·class="p"·data-group-id="3948794058-2">(</span><span·class="s">"xmerl.hrl"</span><span·class="p"·data-group-id="3948794058-2">)</span><span·class="p">.</span><span·class="w"> |
| 224 | </span><span·class="w"> | 224 | </span><span·class="w"> |
| 225 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id=" | 225 | </span><span·class="p">-</span><span·class="na">export</span><span·class="p"·data-group-id="3948794058-3">(</span><span·class="p"·data-group-id="3948794058-4">[</span><span·class="ss">file1</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">file2</span><span·class="p">/</span><s[·...·truncated·by·diffoscope;·len:·243,·SHA:·c5edea18ace1c1240bcbd22cee62df615f3f4a8ea4d6f67a73084023a8ac7e38·...·]-3">)</span><span·class="p">.</span><span·class="w"> |
| 226 | </span><span·class="nf">file1</span><span·class="p"·data-group-id=" | 226 | </span><span·class="nf">file1</span><span·class="p"·data-group-id="3948794058-5">(</span><span·class="n">F</span><span·class="p"·data-group-id="3948794058-5">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nc">xmerl_scan</span><span·class="p">:</span><span·class="nf">file</[·...·truncated·by·diffoscope;·len:·123,·SHA:·cfdaa2792c0cffff10f4729f66bed021a86750898a5b95b46a114343354b0a56·...·]-6">)</span><span·class="p">.</span><span·class="w"> |
| 227 | </span><span·class="nf">file2</span><span·class="p"·data-group-id=" | 227 | </span><span·class="nf">file2</span><span·class="p"·data-group-id="3948794058-7">(</span><span·class="n">F</span><span·class="p"·data-group-id="3948794058-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="nc">xmerl_scan</span><span·class="p">:</span><span·class="nf">file</[·...·truncated·by·diffoscope;·len:·471,·SHA:·252ee99c0c57407a0490c19c7c236a0a595d3dc767088429882ec45778ec0cad·...·]-8">)</span><span·class="p">.</span><span·class="w"> |
| 228 | </span><span·class="nf">file3</span><span·class="p"·data-group-id=" | 228 | </span><span·class="nf">file3</span><span·class="p"·data-group-id="3948794058-11">(</span><span·class="n">F</span><span·class="p"·data-group-id="3948794058-11">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w">·</span><span·class="n">Acc</span><span·class="w">·</span><span·class="o">=</span><span[·...·truncated·by·diffoscope;·len:·888,·SHA:·10c61ce0931076b835a5b8d9fcea88b6d9a3453d7d8bdfd54dabfff4f4daf514·...·]-14">{</span><span·class="n">Acc</span><span·class="p">,</span><span·class="w">·</span><span·class="n">P</span><span·class="p">,</span><span·class="w"> |
| 229 | </span><span·class="n">S</span><span·class="p"·data-group-id=" | 229 | </span><span·class="n">S</span><span·class="p"·data-group-id="3948794058-14">}</span><span·class="p">;</span><span·class="w">·</span><span·class="c1">%·new·return·format·(X,·Acc,·S)·->·{[X|Acc],·S}·end,·xmerl_scan:file(F,</span><span·class="w"> |
| 230 | </span><span·class="p"·data-group-id=" | 230 | </span><span·class="p"·data-group-id="3948794058-15">[</span><span·class="p"·data-group-id="3948794058-16">{</span><span·class="ss">space</span><span·class="p">,</span><span·class="ss">normalize</span><span·class="p"·data-group-id="3948794058-16">}</span><span·class="p">,</span><span·class="w"[·...·truncated·by·diffoscope;·len:·263,·SHA:·f1bbaa0b5d24d6d6c9d387a6ea0323b9d8ef6e60d38070df7f8758db5f19248c·...·]-15">]</span><span·class="p">)</span><span·class="p">.</span></code></pre> |
| 231 | </div> | 231 | </div> |
| 232 | <div·class="bottom-actions"·id="bottom-actions"> | 232 | <div·class="bottom-actions"·id="bottom-actions"> |
| 233 | ··<div·class="bottom-actions-item"> | 233 | ··<div·class="bottom-actions-item"> |
| 234 | ······<a·href="xmerl_ug.html"·class="bottom-actions-button"·rel="prev"> | 234 | ······<a·href="xmerl_ug.html"·class="bottom-actions-button"·rel="prev"> |
| 235 | ········<span·class="subheader"> | 235 | ········<span·class="subheader"> |
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| 189 | first·element·in·each·tuple·is·the·name·of·the·parent·element.·The·list·is·in | 189 | first·element·in·each·tuple·is·the·name·of·the·parent·element.·The·list·is·in |
| 190 | reverse·order.</p><p>The·record·<code·class="inline">#xmlAttribute{}</code>·holds·the·name·and·value·of·an·attribute | 190 | reverse·order.</p><p>The·record·<code·class="inline">#xmlAttribute{}</code>·holds·the·name·and·value·of·an·attribute |
| 191 | in·the·fields·<code·class="inline">name</code>·and·<code·class="inline">value</code>.·All·attributes·of·an·element·is·a·list·of | 191 | in·the·fields·<code·class="inline">name</code>·and·<code·class="inline">value</code>.·All·attributes·of·an·element·is·a·list·of |
| 192 | <code·class="inline">#xmlAttribute{}</code>·in·the·field·<code·class="inline">attributes</code>·of·the·<code·class="inline">#xmlElement{}</code>·record.</p><p>The·<code·class="inline">content</code>·field·of·the·top·element·is·a·list·of·records·that·shows·the | 192 | <code·class="inline">#xmlAttribute{}</code>·in·the·field·<code·class="inline">attributes</code>·of·the·<code·class="inline">#xmlElement{}</code>·record.</p><p>The·<code·class="inline">content</code>·field·of·the·top·element·is·a·list·of·records·that·shows·the |
| 193 | structure·and·data·of·the·document.·If·it·is·a·simple·document·like:</p><pre><code·class="text"><?xml·version="1.0"?> | 193 | structure·and·data·of·the·document.·If·it·is·a·simple·document·like:</p><pre><code·class="text"><?xml·version="1.0"?> |
| 194 | <dog> | 194 | <dog> |
| 195 | Grand·Danois | 195 | Grand·Danois |
| 196 | </dog></code></pre><p>The·parse·result·will·be:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">#</span><span·class="ss">xmlElement</span><span·class="p"·data-group-id="4 | 196 | </dog></code></pre><p>The·parse·result·will·be:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o">#</span><span·class="ss">xmlElement</span><span·class="p"·data-group-id="4504181050-1">{</span><span·class="ss">name</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="ss">dog</span><span·class="p">,</span><span·class="w"> |
| 197 | ············</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 197 | ············</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 198 | ············</span><span·class="ss">parents</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4 | 198 | ············</span><span·class="ss">parents</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4504181050-2">[</span><span·class="p"·data-group-id="4504181050-2">]</span><span·class="p">,</span><span·class="w"> |
| 199 | ············</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 199 | ············</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 200 | ············</span><span·class="ss">attributes</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4 | 200 | ············</span><span·class="ss">attributes</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4504181050-3">[</span><span·class="p"·data-group-id="4504181050-3">]</span><span·class="p">,</span><span·class="w"> |
| 201 | ············</span><span·class="ss">content</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4 | 201 | ············</span><span·class="ss">content</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="p"·data-group-id="4504181050-4">[</span><span·class="p"·data-group-id="4504181050-5">{</span><span·class="ss">xmlText</span><span·class="p">,</span><span·class="p"·data-group-id="4504181050-6">[</span><span·class="p"·data-group-id="4504181050-7">{</span><span·class="ss">dog<[·...·truncated·by·diffoscope;·len:·328,·SHA:·9efb2181639e75ca816e50488927cc02452609d766fb09ce865f962615f0c08f·...·]-8">]</span><span·class="p">,</span><span·class="s">"\ |
| 202 | Grand·Danois\ | 202 | Grand·Danois\ |
| 203 | "</span><span·class="p">,</span><span·class="ss">text</span><span·class="p"·data-group-id="4 | 203 | "</span><span·class="p">,</span><span·class="ss">text</span><span·class="p"·data-group-id="4504181050-5">}</span><span·class="p"·data-group-id="4504181050-4">]</span><span·class="p">,</span><span·class="w"> |
| 204 | ············</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 204 | ············</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 205 | ············</span><span·class="p"·data-group-id="4 | 205 | ············</span><span·class="p"·data-group-id="4504181050-1">}</span></code></pre><p>Where·the·content·of·the·top·element·is: |
| 206 | <code·class="inline">[{xmlText,[{dog,1}],1,[],"\·Grand·Danois\·",text}]</code>.·Text·will·be·returned·in | 206 | <code·class="inline">[{xmlText,[{dog,1}],1,[],"\·Grand·Danois\·",text}]</code>.·Text·will·be·returned·in |
| 207 | <code·class="inline">xmlText</code>·records.·Though,·usually·documents·are·more·complex,·and·the·content | 207 | <code·class="inline">xmlText</code>·records.·Though,·usually·documents·are·more·complex,·and·the·content |
| 208 | of·the·top·element·will·in·that·case·be·a·nested·structure·with·<code·class="inline">#xmlElement{}</code> | 208 | of·the·top·element·will·in·that·case·be·a·nested·structure·with·<code·class="inline">#xmlElement{}</code> |
| 209 | records·that·in·turn·may·have·complex·content.·All·of·this·reflects·the | 209 | records·that·in·turn·may·have·complex·content.·All·of·this·reflects·the |
| 210 | structure·of·the·XML·document.</p><p>Space·characters·between·mark-up·as·<code·class="inline">space</code>,·<code·class="inline">tab</code>·and·<code·class="inline">line·feed</code>·are | 210 | structure·of·the·XML·document.</p><p>Space·characters·between·mark-up·as·<code·class="inline">space</code>,·<code·class="inline">tab</code>·and·<code·class="inline">line·feed</code>·are |
| 211 | normalized·and·returned·as·xmlText·records.</p><h3·id="errors"·class="section-heading"> | 211 | normalized·and·returned·as·xmlText·records.</p><h3·id="errors"·class="section-heading"> |
| 212 | ··<a·href="#errors"·class="hover-link"> | 212 | ··<a·href="#errors"·class="hover-link"> |
| Offset 267, 49 lines modified | Offset 267, 49 lines modified | ||
| 267 | <!--·Date·of·the·format·yyyy.mm.dd·--> | 267 | <!--·Date·of·the·format·yyyy.mm.dd·--> |
| 268 | <!ELEMENT·date··············(#PCDATA)> | 268 | <!ELEMENT·date··············(#PCDATA)> |
| 269 | <!ATTLIST··bike·year·NMTOKEN·#REQUIRED | 269 | <!ATTLIST··bike·year·NMTOKEN·#REQUIRED |
| 270 | ················color·NMTOKENS·#REQUIRED | 270 | ················color·NMTOKENS·#REQUIRED |
| 271 | ················condition·(useless·|·bad·|·serviceable·|·moderate·|·good·| | 271 | ················condition·(useless·|·bad·|·serviceable·|·moderate·|·good·| |
| 272 | ···························excellent·|·new·|·outstanding)·"excellent"·></code></pre><p>If·you·want·to·parse·the·XML·file·motorcycles.xml·you·run·it·in·the·Erlang·shell | 272 | ···························excellent·|·new·|·outstanding)·"excellent"·></code></pre><p>If·you·want·to·parse·the·XML·file·motorcycles.xml·you·run·it·in·the·Erlang·shell |
| 273 | like:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="p"·data-group-id=" | 273 | like:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="gp·unselectable">3>·</span><span·class="p"·data-group-id="6839912979-1">{</span><span·class="n">ParseResult</span><span·class="p">,</span><span·class="n">Misc</span><span·class="p"·data-group-id="6839912979-1">}</span><span·class="o">=</span><span·class="nc">xmerl_scan</span><span·class="p">:</span><span·class="n[·...·truncated·by·diffoscope;·len:·158,·SHA:·5c1d80f770447d6f13acbc5d7feffd4ce51b1d562bf12633c1871608ec20357c·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 274 | </span><span·class="p"·data-group-id=" | 274 | </span><span·class="p"·data-group-id="6839912979-3">{</span><span·class="p"·data-group-id="6839912979-4">{</span><span·class="ss">xmlElement</span><span·class="p">,</span><span·class="ss">motorcycles</span><span·class="p">,</span><span·class="w"> |
| 275 | ·············</span><span·class="ss">motorcycles</span><span·class="p">,</span><span·class="w"> | 275 | ·············</span><span·class="ss">motorcycles</span><span·class="p">,</span><span·class="w"> |
| 276 | ·············</span><span·class="p"·data-group-id=" | 276 | ·············</span><span·class="p"·data-group-id="6839912979-5">[</span><span·class="p"·data-group-id="6839912979-5">]</span><span·class="p">,</span><span·class="w"> |
| 277 | ·············</span><span·class="p"·data-group-id=" | 277 | ·············</span><span·class="p"·data-group-id="6839912979-6">{</span><span·class="ss">xmlNamespace</span><span·class="p">,</span><span·class="p"·data-group-id="6839912979-7">[</span><span·class="p"·data-group-id="6839912979-7">]</span><span·class="p">,</span><span·class="p"·data-group-id="6839912979-8"[·...·truncated·by·diffoscope;·len:·103,·SHA:·46ad1571540448343cf77217b7c3f9843b387af5b0ddc9c2bc7247801e45b7bb·...·]-6">}</span><span·class="p">,</span><span·class="w"> |
| 278 | ·············</span><span·class="p"·data-group-id=" | 278 | ·············</span><span·class="p"·data-group-id="6839912979-9">[</span><span·class="p"·data-group-id="6839912979-9">]</span><span·class="p">,</span><span·class="w"> |
| 279 | ·············</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> | 279 | ·············</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> |
| 280 | ·············</span><span·class="p"·data-group-id=" | 280 | ·············</span><span·class="p"·data-group-id="6839912979-10">[</span><span·class="p"·data-group-id="6839912979-10">]</span><span·class="p">,</span><span·class="w"> |
| 281 | ·············</span><span·class="p"·data-group-id=" | 281 | ·············</span><span·class="p"·data-group-id="6839912979-11">[</span><span·class="p"·data-group-id="6839912979-12">{</span><span·class="ss">xmlText</span><span·class="p">,</span><span·class="p"·data-group-id="6839912979-13">[</span><span·class="p"·data-group-id="6839912979-14">{</span><span·class="ss"[·...·truncated·by·diffoscope;·len:·344,·SHA:·ee91beb5d2df67a699c89bd25a7a352d93ac8b3b1f623cfe6d7ff8670b8c4937·...·]-15">]</span><span·class="p">,</span><span·class="s">"\ |
| 282 | ··"</span><span·class="p">,</span><span·class="ss">text</span><span·class="p"·data-group-id=" | 282 | ··"</span><span·class="p">,</span><span·class="ss">text</span><span·class="p"·data-group-id="6839912979-12">}</span><span·class="p">,</span><span·class="w"> |
| 283 | ··············</span><span·class="p"·data-group-id=" | 283 | ··············</span><span·class="p"·data-group-id="6839912979-16">{</span><span·class="ss">xmlElement</span><span·class="p">,</span><span·class="ss">bike</span><span·class="p">,</span><span·class="w"> |
| 284 | ··························</span><span·class="ss">bike</span><span·class="p">,</span><span·class="w"> | 284 | ··························</span><span·class="ss">bike</span><span·class="p">,</span><span·class="w"> |
| 285 | ··························</span><span·class="p"·data-group-id=" | 285 | ··························</span><span·class="p"·data-group-id="6839912979-17">[</span><span·class="p"·data-group-id="6839912979-17">]</span><span·class="p">,</span><span·class="w"> |
| 286 | ··························</span><span·class="p"·data-group-id="1620677624-18">{</span><span·class="ss">xmlNamespace</span><span·class="p">,</span><span·class="p"·data-group-id="1620677624-19">[</span><span·class="p"·data-group-id="1620677624-19">]</span><span·class="p">,</span><span·class="p"·data-group-id="1620677624-20">[</span><span·class="p"·data-group-id="1620677624-20">]</span><span·class="p"·data-group-id="1620677624-18">}</span><span·class="p">,</span><span·class="w"> | ||
| 287 | ··························</span><span·class="p"·data-group-id=" | 286 | ··························</span><span·class="p"·data-group-id="6839912979-18">{</span><span·class="ss">xmlNamespace</span><span·class="p">,</span><span·class="p"·data-group-id="6839912979-19">[</span><span·class="p"·data-group-id="6839912979-19">]</span><span·class="p">,</span><span·class="p"·data-group-id="6839912979[·...·truncated·by·diffoscope;·len:·114,·SHA:·2f11ad6f0d76f411c690c345e1cbf84d3b727812e038b9a7a46cb8ef6509df3b·...·]</span><span·class="p">,</span><span·class="w"> |
| 287 | ··························</span><span·class="p"·data-group-id="6839912979-21">[</span><span·class="p"·data-group-id="6839912979-22">{</span><span·class="ss">motorcycles</span><span·class="p">,</span><span·class="mi">1</span><span·class="p"·data-group-id="6839912979-22">}</span><span·class="p"·data-group-id="6839912979-21">]</span><span·class="p">,</span><span·class="w"> | ||
| 288 | ··························</span><span·class="mi">2</span><span·class="p">,</span><span·class="w"> | 288 | ··························</span><span·class="mi">2</span><span·class="p">,</span><span·class="w"> |
| 289 | ··························</span><span·class="p"·data-group-id="1620677624-23">[</span><span·class="p"·data-group-id="1620677624-24">{</span><span·class="ss">xmlAttribute</span><span·class="p">,</span><span·class="ss">year</span><span·class="p">,</span><span·class="p"·data-group-id="1620677624-25">[</span><span·class="p"·data-group-id="1620677624-25">]</span><span·class="p">,</span><span·class="p"·data-group-id="1620677624-26">[</span><span·class="p"·data-group-id="1620677624-26">]</span><span·class="p">,</span><span·class="p"·data-group-id="1620677624-27">[</span><span·class="p"·data-group-id="1620677624-27">]</span><span·class="p">,</span><span·class="p"·data-group-id="1620677624-28">[</span><span·class="p"·data-group-id="1620677624-28">]</span><span·class="p">|</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="1620677624-24">}</span><span·class="p">,</span><span·class="w"> | ||
| 290 | ·························· | 289 | ··························</span><span·class="p"·data-group-id="6839912979-23">[</span><span·class="p"·data-group-id="6839912979-24">{</span><span·class="ss">xmlAttribute</span><span·class="p">,</span><span·class="ss">year</span><span·class="p">,</span><span·class="p"·data-group-id[·...·truncated·by·diffoscope;·len:·618,·SHA:·2132b8dc3f24115114a3ce8c5a306a1874a9f7d7e13f85aa1069c82314d44340·...·]</span><span·class="p">,</span><span·class="w"> |
| 290 | ···························</span><span·class="p"·data-group-id="6839912979-29">{</span><span·class="ss">xmlAttribute</span><span·class="p">,</span><span·class="ss">color</span><span·class="p">,</span><span·class="p"·data-group-id="6839912979-30">[</span><span·class="p"·data-group-id="6839912979-30">]</span><span·class="p">,</span><span·class="p"·data-group-id="6839912979-31">[</span><span·class="p"·data-group-id="6839912979-31">]</span><span·class="p">,</span><span·class="p"·data-group-id="6839912979-32">[</span><span·class="p"·data-group-id="6839912979-32">]</span><span·class="p">|</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="6839912979-29">}</span><span·class="p"·data-group-id="6839912979-23">]</span><span·class="p">,</span><span·class="w"> | ||
| 291 | ··························</span><span·class="p"·data-group-id=" | 291 | ··························</span><span·class="p"·data-group-id="6839912979-33">[</span><span·class="p"·data-group-id="6839912979-34">{</span><span·class="ss">xmlText</span><span·class="p">,</span><span·class="p"·data-group-id="6839912979-35">[</span><span·class="p"·data-group-id="6839912979-36">{</span><span·class="ss"[·...·truncated·by·diffoscope;·len:·419,·SHA:·702b3ef0f6ba99789e780e2b1fb312dbe4b3b69d9e7fcceaa73e3afae1ae87c1·...·]-35">]</span><span·class="p">,</span><span·class="w"> |
| 292 | ····································</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> | 292 | ····································</span><span·class="mi">1</span><span·class="p">,</span><span·class="w"> |
| 293 | ····································</span><span·class="p"·data-group-id=" | 293 | ····································</span><span·class="p"·data-group-id="6839912979-38">[</span><span·class="p"·data-group-id="6839912979-38">]</span><span·class="p">|</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="6839912979-34">}</span><span·class="p">,</span><span·class="w"> |
| 294 | ···························</span><span·class="p"·data-group-id=" | 294 | ···························</span><span·class="p"·data-group-id="6839912979-39">{</span><span·class="ss">xmlElement</span><span·class="p">,</span><span·class="ss">name</span><span·class="p">,</span><span·class="ss">name</span><span·class="p">,</span><span·class="p"·data-group-id="6839912979-40">[</span><span·class="p"·d[·...·truncated·by·diffoscope;·len:·174,·SHA:·b02ebc70cef1f2286a9523436576f7fb2dea12a773c9645e7d66e53fe9e05c1c·...·]-39">}</span><span·class="p">,</span><span·class="w"> |
| 295 | ···························</span><span·class="p"·data-group-id=" | 295 | ···························</span><span·class="p"·data-group-id="6839912979-41">{</span><span·class="ss">xmlText</span><span·class="p">,</span><span·class="p"·data-group-id="6839912979-42">[</span><span·class="p"·data-group-id="6839912979-43">{</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</spa[·...·truncated·by·diffoscope;·len:·392,·SHA:·a74d150841f4381b19875b0f22ba4928e5a0db6abfd0baf0e0ae620714440caf·...·]-41">}</span><span·class="p">,</span><span·class="w"> |
| 296 | ···························</span><span·class="p"·data-group-id=" | 296 | ···························</span><span·class="p"·data-group-id="6839912979-44">{</span><span·class="ss">xmlElement</span><span·class="p">,</span><span·class="ss">engine</span><span·class="p">|</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="6839912979-44">}</span><span·class="p">,</span><span·class="w"> |
| 297 | ···························</span><span·class="p"·data-group-id=" | 297 | ···························</span><span·class="p"·data-group-id="6839912979-45">{</span><span·class="ss">xmlText</span><span·class="p">|</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="6839912979-45">}</span><span·class="p">,</span><span·class="w"> |
| 298 | ···························</span><span·class="p"·data-group-id=" | 298 | ···························</span><span·class="p"·data-group-id="6839912979-46">{</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="p"·data-group-id="6839912979-46">}</span><span·class="p">|</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class[·...·truncated·by·diffoscope;·len:·30,·SHA:·80d5d7320745a7561c87af5fba55678c4d6c47eee128f46615e04a27a14c3dfe·...·]-33">]</span><span·class="p">,</span><span·class="w"> |
| 299 | ··························</span><span·class="p"·data-group-id=" | 299 | ··························</span><span·class="p"·data-group-id="6839912979-47">[</span><span·class="p"·data-group-id="6839912979-47">]</span><span·class="p">,</span><span·class="w"> |
| 300 | ··························</span><span·class="s">"."</span><span·class="p">,</span><span·class="w"> | 300 | ··························</span><span·class="s">"."</span><span·class="p">,</span><span·class="w"> |
| 301 | ··························</span><span·class="ss">undeclared</span><span·class="p"·data-group-id=" | 301 | ··························</span><span·class="ss">undeclared</span><span·class="p"·data-group-id="6839912979-16">}</span><span·class="p">,</span><span·class="w"> |
| 302 | ··············</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> | 302 | ··············</span><span·class="p">.</span><span·class="p">.</span><span·class="p">.</span><span·class="w"> |
| 303 | ··············</span><span·class="p"·data-group-id=" | 303 | ··············</span><span·class="p"·data-group-id="6839912979-11">]</span><span·class="p">,</span><span·class="w"> |
| 304 | ·············</span><span·class="p"·data-group-id=" | 304 | ·············</span><span·class="p"·data-group-id="6839912979-48">[</span><span·class="p"·data-group-id="6839912979-48">]</span><span·class="p">,</span><span·class="w"> |
| 305 | ·············</span><span·class="s">"."</span><span·class="p">,</span><span·class="w"> | 305 | ·············</span><span·class="s">"."</span><span·class="p">,</span><span·class="w"> |
| 306 | ·············</span><span·class="ss">undeclared</span><span·class="p"·data-group-id=" | 306 | ·············</span><span·class="ss">undeclared</span><span·class="p"·data-group-id="6839912979-4">}</span><span·class="p">,</span><span·class="w"> |
| 307 | ·</span><span·class="p"·data-group-id=" | 307 | ·</span><span·class="p"·data-group-id="6839912979-49">[</span><span·class="p"·data-group-id="6839912979-49">]</span><span·class="p"·data-group-id="6839912979-3">}</span><span·class="w"> |
| 308 | </span><span·class="mi">4</span><span·class="o">></span></code></pre><p>If·you·instead·receives·the·XML·doc·as·a·string·you·can·parse·it·by | 308 | </span><span·class="mi">4</span><span·class="o">></span></code></pre><p>If·you·instead·receives·the·XML·doc·as·a·string·you·can·parse·it·by |
| 309 | <a·href="xmerl_scan.html#string/1"><code·class="inline">xmerl_scan:string/1</code></a>.·Both·file/2·and·string/2·exists·where·the·second·argument | 309 | <a·href="xmerl_scan.html#string/1"><code·class="inline">xmerl_scan:string/1</code></a>.·Both·file/2·and·string/2·exists·where·the·second·argument |
| 310 | is·a·list·of·options·to·the·parser,·see·the·<a·href="xmerl_scan.html">reference·manual</a>.</p><h2·id="example-extracting-data-from-xml-content"·class="section-heading"> | 310 | is·a·list·of·options·to·the·parser,·see·the·<a·href="xmerl_scan.html">reference·manual</a>.</p><h2·id="example-extracting-data-from-xml-content"·class="section-heading"> |
| 311 | ··<a·href="#example-extracting-data-from-xml-content"·class="hover-link"> | 311 | ··<a·href="#example-extracting-data-from-xml-content"·class="hover-link"> |
| 312 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 312 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 313 | ··</a> | 313 | ··</a> |
| 314 | ··<span·class="text">Example:·Extracting·Data·From·XML·Content</span> | 314 | ··<span·class="text">Example:·Extracting·Data·From·XML·Content</span> |
| Offset 338, 30 lines modified | Offset 338, 30 lines modified | ||
| 338 | fields·of·the·appropriate·element.</p><p>There·is·support·for·this·in·Xmerl·by·the·"simple-form"·format.·You·can·put·your | 338 | fields·of·the·appropriate·element.</p><p>There·is·support·for·this·in·Xmerl·by·the·"simple-form"·format.·You·can·put·your |
| 339 | data·in·a·simple-form·data·structure·and·feed·it·into | 339 | data·in·a·simple-form·data·structure·and·feed·it·into |
| 340 | <code·class="inline">xmerl:export_simple(Content,Callback,RootAttributes)</code>.·Content·may·be·a·mixture | 340 | <code·class="inline">xmerl:export_simple(Content,Callback,RootAttributes)</code>.·Content·may·be·a·mixture |
| 341 | of·simple-form·and·Xmerl·records·as·<code·class="inline">#xmlElement{}</code>·and·<code·class="inline">#xmlText{}</code>.</p><p>The·Types·are:</p><ul><li>Content·=·[Element]</li><li>Callback·=·atom()</li><li>RootAttributes·=·[Attributes]</li></ul><p>Element·is·any·of:</p><ul><li>{Tag,·Attributes,·Content}</li><li>{Tag,·Content}</li><li>Tag</li><li>IOString</li><li>#xmlText{}</li><li>#xmlElement{}</li><li>#xmlPI{}</li><li>#xmlComment{}</li><li>#xmlDecl{}</li></ul><p>The·simple-form·structure·is·any·of·<code·class="inline">{Tag,·Attributes,·Content}</code>, | 341 | of·simple-form·and·Xmerl·records·as·<code·class="inline">#xmlElement{}</code>·and·<code·class="inline">#xmlText{}</code>.</p><p>The·Types·are:</p><ul><li>Content·=·[Element]</li><li>Callback·=·atom()</li><li>RootAttributes·=·[Attributes]</li></ul><p>Element·is·any·of:</p><ul><li>{Tag,·Attributes,·Content}</li><li>{Tag,·Content}</li><li>Tag</li><li>IOString</li><li>#xmlText{}</li><li>#xmlElement{}</li><li>#xmlPI{}</li><li>#xmlComment{}</li><li>#xmlDecl{}</li></ul><p>The·simple-form·structure·is·any·of·<code·class="inline">{Tag,·Attributes,·Content}</code>, |
| 342 | <code·class="inline">{Tag,·Content}</code>·or·<code·class="inline">Tag</code>·where:</p><ul><li>Tag·=·atom()</li><li>Attributes·=·[{Name,·Value}|·#xmlAttribute{}]</li><li>Name·=·atom()</li><li><p>Value·=·IOString·|·atom()·|·integer()</p></li></ul><p>See·also·reference·manual·for·<a·href="xmerl.html#export_simple/3">xmerl</a></p><p>If·you·want·to·add·the·information·about·a·black·Harley·Davidsson·1200·cc | 342 | <code·class="inline">{Tag,·Content}</code>·or·<code·class="inline">Tag</code>·where:</p><ul><li>Tag·=·atom()</li><li>Attributes·=·[{Name,·Value}|·#xmlAttribute{}]</li><li>Name·=·atom()</li><li><p>Value·=·IOString·|·atom()·|·integer()</p></li></ul><p>See·also·reference·manual·for·<a·href="xmerl.html#export_simple/3">xmerl</a></p><p>If·you·want·to·add·the·information·about·a·black·Harley·Davidsson·1200·cc |
| 343 | Sportster·motorcycle·from·2003·that·is·in·shape·as·new·in·the·motorcycles.xml | 343 | Sportster·motorcycle·from·2003·that·is·in·shape·as·new·in·the·motorcycles.xml |
| 344 | document·you·can·put·the·data·in·a·simple-form·data·structure·like:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Data</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 344 | document·you·can·put·the·data·in·a·simple-form·data·structure·like:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="n">Data</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 345 | ··</span><span·class="p"·data-group-id=" | 345 | ··</span><span·class="p"·data-group-id="4825879388-1">{</span><span·class="ss">bike</span><span·class="p">,</span><span·class="w"> |
| 346 | ·····</span><span·class="p"·data-group-id=" | 346 | ·····</span><span·class="p"·data-group-id="4825879388-2">[</span><span·class="p"·data-group-id="4825879388-3">{</span><span·class="ss">year</span><span·class="p">,</span><span·class="s">"2003"</span><span·class="p"·data-group-id="4825879388-3">}</span><span·class="p">,</span><span·class="[·...·truncated·by·diffoscope;·len:·452,·SHA:·1d11937bc0458c578e3023e23ab54be6e868e3e075559ee456e9e4674a00ef98·...·]-2">]</span><span·class="p">,</span><span·class="w"> |
| 347 | ·····</span><span·class="p"·data-group-id=" | 347 | ·····</span><span·class="p"·data-group-id="4825879388-6">[</span><span·class="p"·data-group-id="4825879388-7">{</span><span·class="ss">name</span><span·class="p">,</span><span·class="w"> |
| 348 | ·········</span><span·class="p"·data-group-id=" | 348 | ·········</span><span·class="p"·data-group-id="4825879388-8">[</span><span·class="p"·data-group-id="4825879388-9">{</span><span·class="ss">manufacturer</span><span·class="p">,</span><span·class="p"·data-group-id="4825879388-10">[</span><span·class="s">"Harley·Davidsson"</span><span·class="p"·[·...·truncated·by·diffoscope;·len:·79,·SHA:·b0fbd7ee9767cbf481a8c6847bce1918fd77c02d1bd057427c5752d7948c904e·...·]-9">}</span><span·class="p">,</span><span·class="w"> |
| 349 | ··········</span><span·class="p"·data-group-id=" | 349 | ··········</span><span·class="p"·data-group-id="4825879388-11">{</span><span·class="ss">brandName</span><span·class="p">,</span><span·class="p"·data-group-id="4825879388-12">[</span><span·class="s">"XL1200C"</span><span·class="p"·data-group-id="4825879388-12">]</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·15,·SHA:·805109e592fcc6e698cd44111fdb409b0bf178d96cb90b764bdd41d0b1e3d6a9·...·]-11">}</span><span·class="p">,</span><span·class="w"> |
| 350 | ··········</span><span·class="p"·data-group-id=" | 350 | ··········</span><span·class="p"·data-group-id="4825879388-13">{</span><span·class="ss">additionalName</span><span·class="p">,</span><span·class="p"·data-group-id="4825879388-14">[</span><span·class="s">"Sportster"</span><span·class="p"·data-group-id="4825879388-14">]</span><span·class="p"·dat[·...·truncated·by·diffoscope;·len:·129,·SHA:·48af458791dc9781ee2160d89281c1855d22b99f824dbb5cabc19279daa04a2a·...·]-7">}</span><span·class="p">,</span><span·class="w"> |
| 351 | ······</span><span·class="p"·data-group-id=" | 351 | ······</span><span·class="p"·data-group-id="4825879388-15">{</span><span·class="ss">engine</span><span·class="p">,</span><span·class="w"> |
| 352 | ·········</span><span·class="p"·data-group-id=" | 352 | ·········</span><span·class="p"·data-group-id="4825879388-16">[</span><span·class="s">"V-engine,·2-cylinders,·1200·cc"</span><span·class="p"·data-group-id="4825879388-16">]</span><span·class="p"·data-group-id="4825879388-15">}</span><span·class="p">,</span><span·class="w"> |
| 353 | ······</span><span·class="p"·data-group-id=" | 353 | ······</span><span·class="p"·data-group-id="4825879388-17">{</span><span·class="ss">kind</span><span·class="p">,</span><span·class="p"·data-group-id="4825879388-18">[</span><span·class="s">"custom"</span><span·class="p"·data-group-id="4825879388-18">]</span><span·class="p"·data-group-id="4[·...·truncated·by·diffoscope;·len:·9,·SHA:·646330a5a76062488504fb5635a96d5bc5512eb407511a5ac2ee49f2da0b0c2d·...·]-17">}</span><span·class="p">,</span><span·class="w"> |
| 354 | ······</span><span·class="p"·data-group-id=" | 354 | ······</span><span·class="p"·data-group-id="4825879388-19">{</span><span·class="ss">drive</span><span·class="p">,</span><span·class="p"·data-group-id="4825879388-20">[</span><span·class="s">"belt"</span><span·class="p"·data-group-id="4825879388-20">]</span><span·class="p"·data-group-id="48[·...·truncated·by·diffoscope;·len:·115,·SHA:·ca7e226303b0947389d4529ecffae2199c241329ef99bbc474881cbc239df006·...·]-1">}</span></code></pre><p>In·order·to·append·this·data·to·the·end·of·the·motorcycles.xml·document·you·have |
| 355 | to·parse·the·file·and·add·Data·to·the·end·of·the·root·element·content.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">····</span><span·class="p"·data-group-id=" | 355 | to·parse·the·file·and·add·Data·to·the·end·of·the·root·element·content.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">····</span><span·class="p"·data-group-id="7777312314-1">{</span><span·class="n">RootEl</span><span·class="p">,</span><span·class="n">Misc</span><span·class="p"·data-group-id="7777312314-1">}</span><span·class="o">=</span><span·class="nc">xmerl_scan</span><span·class="p">:</span><span·class="nf">fi[·...·truncated·by·diffoscope;·len:·152,·SHA:·223593992dd4aa82256f56e0ba95c3334e83c4b0e722a2a9878931ddacdc5cb7·...·]-2">)</span><span·class="p">,</span><span·class="w"> |
| 356 | ····</span><span·class="o">#</span><span·class="ss">xmlElement</span><span·class="p"·data-group-id=" | 356 | ····</span><span·class="o">#</span><span·class="ss">xmlElement</span><span·class="p"·data-group-id="7777312314-3">{</span><span·class="ss">content</span><span·class="o">=</span><span·class="n">Content</span><span·class="p"·data-group-id="7777312314-3">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="n">RootEl</span><span·class="p">,</span><span·class="w"> |
| 357 | ····</span><span·class="n">NewContent</span><span·class="o">=</span><span·class="n">Content</span><span·class="o">++</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">flatten</span><span·class="p"·data-group-id=" | 357 | ····</span><span·class="n">NewContent</span><span·class="o">=</span><span·class="n">Content</span><span·class="o">++</span><span·class="nc">lists</span><span·class="p">:</span><span·class="nf">flatten</span><span·class="p"·data-group-id="7777312314-4">(</span><span·class="p"·data-group-id="7777312314-5">[</span><span·class="n">Data</span><span·class="p"·data-group-id="7777312314-5">]</span><span·class="p"·data-group-id="7777312314-4">)</span><span·class="p">,</span><span·class="w"> |
| 358 | ····</span><span·class="n">NewRootEl</span><span·class="o">=</span><span·class="n">RootEl</span><span·class="o">#</span><span·class="ss">xmlElement</span><span·class="p"·data-group-id=" | 358 | ····</span><span·class="n">NewRootEl</span><span·class="o">=</span><span·class="n">RootEl</span><span·class="o">#</span><span·class="ss">xmlElement</span><span·class="p"·data-group-id="7777312314-6">{</span><span·class="ss">content</span><span·class="o">=</span><span·class="n">NewContent</span><span·class="p"·data-group-id="7777312314-6">}</span><span·class="p">,</span></code></pre><p>Then·you·can·run·it·through·the·export_simple/2·funct[·...·truncated·by·diffoscope;·len:·675,·SHA:·10a433afc14d86138afdb3bfcb967c0aa881cb188c6d60efa2b155ba07bb554f·...·]-2">)</span><span·class="p">,</span><span·class="w"> |
| 359 | ····</span><span·class="n">Export</span><span·class="o">=</span><span·class="nc">xmerl</span><span·class="p">:</span><span·class="nf">export_simple</span><span·class="p"·data-group-id=" | 359 | ····</span><span·class="n">Export</span><span·class="o">=</span><span·class="nc">xmerl</span><span·class="p">:</span><span·class="nf">export_simple</span><span·class="p"·data-group-id="4987540347-4">(</span><span·class="p"·data-group-id="4987540347-5">[</span><span·class="n">NewRootEl</span><span·class="p"·data-group-id="4987540347-5">]</span><span·class="p">,</span><span·class="ss">xmerl_xml</span><span·class="p"·data-group-id="49875403[·...·truncated·by·diffoscope;·len:·2,·SHA:·31489056e0916d59fe3add79e63f095af3ffb81604691f21cad442a85c7be617·...·]-4">)</span><span·class="p">,</span><span·class="w"> |
| 360 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id=" | 360 | ····</span><span·class="nc">io</span><span·class="p">:</span><span·class="nf">format</span><span·class="p"·data-group-id="4987540347-6">(</span><span·class="n">IOF</span><span·class="p">,</span><span·class="s">"</span><span·class="si">~s</span><span·class="si">~n</span><span·class="s">"</span><span·class="p">,</span><span·class="p"·data-group-id="4987540347-7">[</sp[·...·truncated·by·diffoscope;·len:·316,·SHA:·522722f4481f34e8941d0db25e9af5a1644e559a51a248611853fd23fd2a9712·...·]-6">)</span><span·class="p">,</span></code></pre><p><a·href=""·id="new_motorcyclesxml"></a></p><p>The·result·would·be:</p><pre><code·class="text"> |
| 361 | <?xml·version="1.0"?><motorcycles> | 361 | <?xml·version="1.0"?><motorcycles> |
| 362 | ··<bike·year="2000"·color="black"> | 362 | ··<bike·year="2000"·color="black"> |
| 363 | ····<name> | 363 | ····<name> |
| 364 | ······<manufacturer>Suzuki</manufacturer> | 364 | ······<manufacturer>Suzuki</manufacturer> |
| 365 | ······<brandName>Suzuki·VL·1500</brandName> | 365 | ······<brandName>Suzuki·VL·1500</brandName> |
| 366 | ······<additionalName>Intruder</additionalName> | 366 | ······<additionalName>Intruder</additionalName> |
| 367 | ····</name> | 367 | ····</name> |
| Offset 383, 48 lines modified | Offset 383, 48 lines modified | ||
| 383 | ··</bike> | 383 | ··</bike> |
| 384 | <bike·year="2003"·color="black"·condition="new"><name><manufacturer>Harley·Davidsson</manufacturer><brandName>XL1200C</brandName><additionalName>Sportster</additionalName></name><engine>V-engine,·2-cylinders,·1200·cc</engine><kind>custom</kind><drive>belt</drive></bike></motorcycles></code></pre><p>If·it·is·important·to·get·similar·indentation·and·newlines·as·in·the·original | 384 | <bike·year="2003"·color="black"·condition="new"><name><manufacturer>Harley·Davidsson</manufacturer><brandName>XL1200C</brandName><additionalName>Sportster</additionalName></name><engine>V-engine,·2-cylinders,·1200·cc</engine><kind>custom</kind><drive>belt</drive></bike></motorcycles></code></pre><p>If·it·is·important·to·get·similar·indentation·and·newlines·as·in·the·original |
| 385 | document·you·have·to·add·<code·class="inline">#xmlText{}</code>·records·with·space·and·newline·values·in | 385 | document·you·have·to·add·<code·class="inline">#xmlText{}</code>·records·with·space·and·newline·values·in |
| 386 | appropriate·places.·It·may·also·be·necessary·to·keep·the·original·prolog·where | 386 | appropriate·places.·It·may·also·be·necessary·to·keep·the·original·prolog·where |
| 387 | the·DTD·is·referenced.·If·so,·it·is·possible·to·pass·a·RootAttribute | 387 | the·DTD·is·referenced.·If·so,·it·is·possible·to·pass·a·RootAttribute |
| 388 | <code·class="inline">{prolog,Value}</code>·to·<code·class="inline">export_simple/3</code>.·The·following·example·code·fixes·those | 388 | <code·class="inline">{prolog,Value}</code>·to·<code·class="inline">export_simple/3</code>.·The·following·example·code·fixes·those |
| 389 | changes·in·the·previous·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">····</span><span·class="n">Data</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> | 389 | changes·in·the·previous·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="w">····</span><span·class="n">Data</span><span·class="w">·</span><span·class="o">=</span><span·class="w"> |
| 390 | ······</span><span·class="p"·data-group-id=" | 390 | ······</span><span·class="p"·data-group-id="1021871873-1">[</span><span·class="o">#</span><span·class="ss">xmlText</span><span·class="p"·data-group-id="1021871873-2">{</span><span·class="ss">value</span><span·class="o">=</span><span·class="s">"··"</span><span·class="p"·data-group-id="10218[·...·truncated·by·diffoscope;·len:·5,·SHA:·53bf89e4bbd9245c1b79840e9653894ac8341443cfe4b4c9ee88e53575e6cdeb·...·]-2">}</span><span·class="p">,</span><span·class="w"> |
| 391 | ·······</span><span·class="p"·data-group-id=" | 391 | ·······</span><span·class="p"·data-group-id="1021871873-3">{</span><span·class="ss">bike</span><span·class="p">,</span><span·class="p"·data-group-id="1021871873-4">[</span><span·class="p"·data-group-id="1021871873-5">{</span><span·class="ss">year</span><span·class="p">,</span><span·class="s">"20[·...·truncated·by·diffoscope;·len:·557,·SHA:·9e94858c59f3c737c7282a8593a2b76abc67ad0af87200263092305ff0685b40·...·]-4">]</span><span·class="p">,</span><span·class="w"> |
| 392 | ·············</span><span·class="p"·data-group-id=" | 392 | ·············</span><span·class="p"·data-group-id="1021871873-8">[</span><span·class="o">#</span><span·class="ss">xmlText</span><span·class="p"·data-group-id="1021871873-9">{</span><span·class="ss">value</span><span·class="o">=</span><span·class="s">"\ |
| 393 | ····"</span><span·class="p"·data-group-id=" | 393 | ····"</span><span·class="p"·data-group-id="1021871873-9">}</span><span·class="p">,</span><span·class="w"> |
| 394 | ··············</span><span·class="p"·data-group-id=" | 394 | ··············</span><span·class="p"·data-group-id="1021871873-10">{</span><span·class="ss">name</span><span·class="p">,</span><span·class="p"·data-group-id="1021871873-11">[</span><span·class="o">#</span><span·class="ss">xmlText</span><span·class="p"·data-group-id="1021871873-12">{</span><span·class="ss">value</span><span·class="o">=</span><span·class="s">"\ |
| 395 | ······"</span><span·class="p"·data-group-id=" | 395 | ······"</span><span·class="p"·data-group-id="1021871873-12">}</span><span·class="p">,</span><span·class="w"> |
| 396 | ·····················</span><span·class="p"·data-group-id=" | 396 | ·····················</span><span·class="p"·data-group-id="1021871873-13">{</span><span·class="ss">manufacturer</span><span·class="p">,</span><span·class="p"·data-group-id="1021871873-14">[</span><span·class="s">"Harley·Davidsson"</span><span·class="p"·data-group-id="1021871873-14">]</span><span·class="p[·...·truncated·by·diffoscope;·len:·27,·SHA:·f035e3bd68470171134e1b5850d4f27ffdf7328defb1753e3f3fe59bfad179c0·...·]-13">}</span><span·class="p">,</span><span·class="w"> |
| 397 | ·····················</span><span·class="o">#</span><span·class="ss">xmlText</span><span·class="p"·data-group-id=" | 397 | ·····················</span><span·class="o">#</span><span·class="ss">xmlText</span><span·class="p"·data-group-id="1021871873-15">{</span><span·class="ss">value</span><span·class="o">=</span><span·class="s">"\ |
| 398 | ······"</span><span·class="p"·data-group-id=" | 398 | ······"</span><span·class="p"·data-group-id="1021871873-15">}</span><span·class="p">,</span><span·class="w"> |
| 399 | ·····················</span><span·class="p"·data-group-id=" | 399 | ·····················</span><span·class="p"·data-group-id="1021871873-16">{</span><span·class="ss">brandName</span><span·class="p">,</span><span·class="p"·data-group-id="1021871873-17">[</span><span·class="s">"XL1200C"</span><span·class="p"·data-group-id="1021871873-17">]</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·15,·SHA:·d2a79e74b112cbb11420811a3e8b9d294d5e31c3b222bf813f416fb956b229df·...·]-16">}</span><span·class="p">,</span><span·class="w"> |
| 400 | ·····················</span><span·class="o">#</span><span·class="ss">xmlText</span><span·class="p"·data-group-id=" | 400 | ·····················</span><span·class="o">#</span><span·class="ss">xmlText</span><span·class="p"·data-group-id="1021871873-18">{</span><span·class="ss">value</span><span·class="o">=</span><span·class="s">"\ |
| 401 | ······"</span><span·class="p"·data-group-id=" | 401 | ······"</span><span·class="p"·data-group-id="1021871873-18">}</span><span·class="p">,</span><span·class="w"> |
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| 131 | ··</a> | 131 | ··</a> |
| 132 | ··<span·class="text">Examples</span> | 132 | ··<span·class="text">Examples</span> |
| 133 | </h3> | 133 | </h3> |
| 134 | <hr·class="thin"/><h4>Example·1·Using·xslapply</h4><p>original·XSLT:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o"><</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="ss">template</span><span·class="w">·</span><span·class="ss">match</span><span·class="o">=</span><span·class="s">"doc/title"</span><span·class="o">></span><span·class="w"> | 134 | <hr·class="thin"/><h4>Example·1·Using·xslapply</h4><p>original·XSLT:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o"><</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="ss">template</span><span·class="w">·</span><span·class="ss">match</span><span·class="o">=</span><span·class="s">"doc/title"</span><span·class="o">></span><span·class="w"> |
| 135 | ····</span><span·class="o"><</span><span·class="ss">h1</span><span·class="o">></span><span·class="w"> | 135 | ····</span><span·class="o"><</span><span·class="ss">h1</span><span·class="o">></span><span·class="w"> |
| 136 | ······</span><span·class="o"><</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="nb">apply</span><span·class="o">-</span><span·class="ss">templates</span><span·class="o">/</span><span·class="o">></span><span·class="w"> | 136 | ······</span><span·class="o"><</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="nb">apply</span><span·class="o">-</span><span·class="ss">templates</span><span·class="o">/</span><span·class="o">></span><span·class="w"> |
| 137 | ····</span><span·class="o"><</span><span·class="o">/</span><span·class="ss">h1</span><span·class="o">></span><span·class="w"> | 137 | ····</span><span·class="o"><</span><span·class="o">/</span><span·class="ss">h1</span><span·class="o">></span><span·class="w"> |
| 138 | </span><span·class="o"><</span><span·class="o">/</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="ss">template</span><span·class="o">></span></code></pre><p>becomes·in·Erlang:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">template</span><span·class="p"·data-group-id=" | 138 | </span><span·class="o"><</span><span·class="o">/</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="ss">template</span><span·class="o">></span></code></pre><p>becomes·in·Erlang:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">template</span><span·class="p"·data-group-id="6213480189-1">(</span><span·class="n">E</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">xmlElement</span><span·class="p"·data-group-id="6213480189-2">{</span><span·class="w">·</span><sp[·...·truncated·by·diffoscope;·len:·630,·SHA:·d3cd8f9357b42f8b34cd98bd5d579584676e122a79c748e9088cafaa1790aedc·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 139 | ····</span><span·class="p"·data-group-id=" | 139 | ····</span><span·class="p"·data-group-id="6213480189-5">[</span><span·class="s">"<h1>"</span><span·class="p">,</span><span·class="w"> |
| 140 | ·········</span><span·class="nf">xslapply</span><span·class="p"·data-group-id=" | 140 | ·········</span><span·class="nf">xslapply</span><span·class="p"·data-group-id="6213480189-6">(</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">template</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">E</span><span·class="p"·data-group-id="[·...·truncated·by·diffoscope;·len:·10,·SHA:·9c7d0d81f92f4de2181f818233dc333ba7338f849bec93e5a3041e81be788f97·...·]-6">)</span><span·class="p">,</span><span·class="w"> |
| 141 | ·····</span><span·class="s">"</h1>"</span><span·class="p"·data-group-id=" | 141 | ·····</span><span·class="s">"</h1>"</span><span·class="p"·data-group-id="6213480189-5">]</span><span·class="p">;</span></code></pre><hr·class="thin"/><hr·class="thin"/><h4>Example·2·Using·value_of·and·select</h4><pre><code·class="makeup·erlang"·translate="no"><span·class="o"><</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="ss">template</span><span·class="w">·</span><span·class="ss">match</span><span·class="o">=</span><span·class="s">"title"</span><span·class="o">></span><span·class="w"> |
| 142 | ··</span><span·class="o"><</span><span·class="ow">div</span><span·class="w">·</span><span·class="ss">align</span><span·class="o">=</span><span·class="s">"center"</span><span·class="o">></span><span·class="o"><</span><span·class="ss">h1</span><span·class="o">></span><span·class="o"><</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="ss">value</span><span·class="o">-</span><span·class="k">of</span><span·class="w">·</span><span·class="ss">select</span><span·class="o">=</span><span·class="s">"."</span><span·class="w">·</span><span·class="o">/</span><span·class="o">></span><span·class="o"><</span><span·class="o">/</span><span·class="ss">h1</span><span·class="o">></span><span·class="o"><</span><span·class="o">/</span><span·class="ow">div</span><span·class="o">></span><span·class="w"> | 142 | ··</span><span·class="o"><</span><span·class="ow">div</span><span·class="w">·</span><span·class="ss">align</span><span·class="o">=</span><span·class="s">"center"</span><span·class="o">></span><span·class="o"><</span><span·class="ss">h1</span><span·class="o">></span><span·class="o"><</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="ss">value</span><span·class="o">-</span><span·class="k">of</span><span·class="w">·</span><span·class="ss">select</span><span·class="o">=</span><span·class="s">"."</span><span·class="w">·</span><span·class="o">/</span><span·class="o">></span><span·class="o"><</span><span·class="o">/</span><span·class="ss">h1</span><span·class="o">></span><span·class="o"><</span><span·class="o">/</span><span·class="ow">div</span><span·class="o">></span><span·class="w"> |
| 143 | </span><span·class="o"><</span><span·class="o">/</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="ss">template</span><span·class="o">></span></code></pre><p>becomes:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">template</span><span·class="p"·data-group-id=" | 143 | </span><span·class="o"><</span><span·class="o">/</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="ss">template</span><span·class="o">></span></code></pre><p>becomes:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">template</span><span·class="p"·data-group-id="0371839918-1">(</span><span·class="n">E</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">xmlElement</span><span·class="p"·data-group-id="0371839918-2">{</span><span·class="ss">name</span[·...·truncated·by·diffoscope;·len:·158,·SHA:·d8db3a6fcc2e6953cc522a155fc19a73e464e95c765531fc96a13a73a722ae1a·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 144 | ····</span><span·class="p"·data-group-id=" | 144 | ····</span><span·class="p"·data-group-id="0371839918-3">[</span><span·class="s">"<div·align=\"center\"><h1>"</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">value_of</span><span·class="p"·data-group-id="0371839918-4">(</span><span·class="nf">s[·...·truncated·by·diffoscope;·len:·426,·SHA:·91e086df2311f79a0a453e9eaed1918e221416bb3c5af3b402b0659e43cb4f2c·...·]-3">]</span><span·class="p">;</span></code></pre><hr·class="thin"/><hr·class="thin"/><h4>Example·3·Simple·xsl·stylesheet</h4><p>A·complete·example·with·the·XSLT·sheet·in·the·xmerl·distribution.</p><pre><code·class="makeup·erlang"·translate="no"><span·class="o"><</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="ss">stylesheet</span><span·class="w">·</span><span·class="ss">version</span><span·class="o">=</span><span·class="s">"1.0"</span><span·class="w"> |
| 145 | ········</span><span·class="nc">xmlns</span><span·class="p">:</span><span·class="ss">xsl</span><span·class="o">=</span><span·class="s">"http://www.w3.org/1999/XSL/Transform"</span><span·class="w"> | 145 | ········</span><span·class="nc">xmlns</span><span·class="p">:</span><span·class="ss">xsl</span><span·class="o">=</span><span·class="s">"http://www.w3.org/1999/XSL/Transform"</span><span·class="w"> |
| 146 | ········</span><span·class="ss">xmlns</span><span·class="o">=</span><span·class="s">"http://www.w3.org/TR/xhtml1/strict"</span><span·class="o">></span><span·class="w"> | 146 | ········</span><span·class="ss">xmlns</span><span·class="o">=</span><span·class="s">"http://www.w3.org/TR/xhtml1/strict"</span><span·class="o">></span><span·class="w"> |
| 147 | ··</span><span·class="o"><</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="ss">strip</span><span·class="o">-</span><span·class="ss">space</span><span·class="w">·</span><span·class="ss">elements</span><span·class="o">=</span><span·class="s">"doc·chapter·section"</span><span·class="o">/</span><span·class="o">></span><span·class="w"> | 147 | ··</span><span·class="o"><</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="ss">strip</span><span·class="o">-</span><span·class="ss">space</span><span·class="w">·</span><span·class="ss">elements</span><span·class="o">=</span><span·class="s">"doc·chapter·section"</span><span·class="o">/</span><span·class="o">></span><span·class="w"> |
| 148 | ··</span><span·class="o"><</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="ss">output</span><span·class="w"> | 148 | ··</span><span·class="o"><</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="ss">output</span><span·class="w"> |
| 149 | ····</span><span·class="ss">method</span><span·class="o">=</span><span·class="s">"xml"</span><span·class="w"> | 149 | ····</span><span·class="ss">method</span><span·class="o">=</span><span·class="s">"xml"</span><span·class="w"> |
| 150 | ····</span><span·class="ss">indent</span><span·class="o">=</span><span·class="s">"yes"</span><span·class="w"> | 150 | ····</span><span·class="ss">indent</span><span·class="o">=</span><span·class="s">"yes"</span><span·class="w"> |
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| 198 | ··</span><span·class="o"><</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="ss">template</span><span·class="w">·</span><span·class="ss">match</span><span·class="o">=</span><span·class="s">"emph"</span><span·class="o">></span><span·class="w"> | 198 | ··</span><span·class="o"><</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="ss">template</span><span·class="w">·</span><span·class="ss">match</span><span·class="o">=</span><span·class="s">"emph"</span><span·class="o">></span><span·class="w"> |
| 199 | ····</span><span·class="o"><</span><span·class="ss">em</span><span·class="o">></span><span·class="w"> | 199 | ····</span><span·class="o"><</span><span·class="ss">em</span><span·class="o">></span><span·class="w"> |
| 200 | ······</span><span·class="o"><</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="nb">apply</span><span·class="o">-</span><span·class="ss">templates</span><span·class="o">/</span><span·class="o">></span><span·class="w"> | 200 | ······</span><span·class="o"><</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="nb">apply</span><span·class="o">-</span><span·class="ss">templates</span><span·class="o">/</span><span·class="o">></span><span·class="w"> |
| 201 | ····</span><span·class="o"><</span><span·class="o">/</span><span·class="ss">em</span><span·class="o">></span><span·class="w"> | 201 | ····</span><span·class="o"><</span><span·class="o">/</span><span·class="ss">em</span><span·class="o">></span><span·class="w"> |
| 202 | ··</span><span·class="o"><</span><span·class="o">/</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="ss">template</span><span·class="o">></span><span·class="w"> | 202 | ··</span><span·class="o"><</span><span·class="o">/</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="ss">template</span><span·class="o">></span><span·class="w"> |
| 203 | </span><span·class="o"><</span><span·class="o">/</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="ss">stylesheet</span><span·class="o">></span></code></pre><hr·class="thin"/><hr·class="thin"/><h4>Example·4·Erlang·version</h4><p>Erlang·transformation·of·previous·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include</span><span·class="p"·data-group-id=" | 203 | </span><span·class="o"><</span><span·class="o">/</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="ss">stylesheet</span><span·class="o">></span></code></pre><hr·class="thin"/><hr·class="thin"/><h4>Example·4·Erlang·version</h4><p>Erlang·transformation·of·previous·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="p">-</span><span·class="na">include</span><span·class="p"·data-group-id="0974255801-1">(</span><span·class="s">"xmerl.hrl"</span><span·class="p"·data-group-id="0974255801-1">)</span><span·class="p">.</span><span·class="w"> |
| 204 | </span><span·class="w"> | 204 | </span><span·class="w"> |
| 205 | </span><span·class="p">-</span><span·class="na">import</span><span·class="p"·data-group-id=" | 205 | </span><span·class="p">-</span><span·class="na">import</span><span·class="p"·data-group-id="0974255801-2">(</span><span·class="ss">xmerl_xs</span><span·class="p">,</span><span·class="w"> |
| 206 | ····</span><span·class="p"·data-group-id=" | 206 | ····</span><span·class="p"·data-group-id="0974255801-3">[</span><span·class="w">·</span><span·class="ss">xslapply</span><span·class="p">/</span><span·class="mi">2</span><span·class="p">,</span><span·class="w">·</span><span·class="ss">value_of</span><span·class="p">/</span><span·class="mi">1</span>[·...·truncated·by·diffoscope;·len:·380,·SHA:·43f748ea403c3b1d59d68838804b16c28ee53a6d77598bdaf6f6a6977bdb9622·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 207 | </span><span·class="nf">doctype</span><span·class="p"·data-group-id=" | 207 | </span><span·class="nf">doctype</span><span·class="p"·data-group-id="0974255801-4">(</span><span·class="p"·data-group-id="0974255801-4">)</span><span·class="p">-></span><span·class="w"> |
| 208 | ····</span><span·class="s">"<!DOCTYPE·html·PUBLIC·\"-//W3C//DTD·XHTML·1.0·Transitional//EN\"\ | 208 | ····</span><span·class="s">"<!DOCTYPE·html·PUBLIC·\"-//W3C//DTD·XHTML·1.0·Transitional//EN\"\ |
| 209 | ·\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd·\">"</span><span·class="p">.</span><span·class="w"> | 209 | ·\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd·\">"</span><span·class="p">.</span><span·class="w"> |
| 210 | </span><span·class="nf">process_xml</span><span·class="p"·data-group-id=" | 210 | </span><span·class="nf">process_xml</span><span·class="p"·data-group-id="0974255801-5">(</span><span·class="n">Doc</span><span·class="p"·data-group-id="0974255801-5">)</span><span·class="p">-></span><span·class="w"> |
| 211 | ····</span><span·class="nf">template</span><span·class="p"·data-group-id=" | 211 | ····</span><span·class="nf">template</span><span·class="p"·data-group-id="0974255801-6">(</span><span·class="n">Doc</span><span·class="p"·data-group-id="0974255801-6">)</span><span·class="p">.</span><span·class="w"> |
| 212 | </span><span·class="nf">template</span><span·class="p"·data-group-id=" | 212 | </span><span·class="nf">template</span><span·class="p"·data-group-id="0974255801-7">(</span><span·class="n">E</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">xmlElement</span><span·class="p"·data-group-id="0974255801-8">{</span><span·class="ss">name</span[·...·truncated·by·diffoscope;·len:·156,·SHA:·8fe1f9bb69cc43fc72f1c9aae67801c938352ac8d49b4d47516bbe16ade4d532·...·]-7">)</span><span·class="p">-></span><span·class="w"> |
| 213 | ····</span><span·class="p"·data-group-id=" | 213 | ····</span><span·class="p"·data-group-id="0974255801-9">[</span><span·class="w">·</span><span·class="s">"<\?xml·version=\"1.0\"·encoding=\"iso-8859-1\"\?>"</span><span·class="p">,</span><span·class="w"> |
| 214 | ······</span><span·class="nf">doctype</span><span·class="p"·data-group-id=" | 214 | ······</span><span·class="nf">doctype</span><span·class="p"·data-group-id="0974255801-10">(</span><span·class="p"·data-group-id="0974255801-10">)</span><span·class="p">,</span><span·class="w"> |
| 215 | ······</span><span·class="s">"<html·xmlns=\"http://www.w3.org/1999/xhtml\"·>"</span><span·class="w"> | 215 | ······</span><span·class="s">"<html·xmlns=\"http://www.w3.org/1999/xhtml\"·>"</span><span·class="w"> |
| 216 | ······</span><span·class="s">"<head>"</span><span·class="w"> | 216 | ······</span><span·class="s">"<head>"</span><span·class="w"> |
| 217 | ······</span><span·class="s">"<title>"</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">value_of</span><span·class="p"·data-group-id=" | 217 | ······</span><span·class="s">"<title>"</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">value_of</span><span·class="p"·data-group-id="0974255801-11">(</span><span·class="nf">select</span><span·class="p"·data-group-id="0974255801-12">(</span><span·class="s">"title"</span><span·class="p">,</span><span·class="n">E</span><span·class="p"·data-group-id="0974255801-12">)</span><span·c[·...·truncated·by·diffoscope;·len:·34,·SHA:·0f457b8f83ba9067e477cc906a479198ac60edb98e3c4a725f794d59cd4d7b13·...·]-11">)</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"</title>"</span><span·class="w"> |
| 218 | ······</span><span·class="s">"</head>"</span><span·class="w"> | 218 | ······</span><span·class="s">"</head>"</span><span·class="w"> |
| 219 | ······</span><span·class="s">"<body>"</span><span·class="p">,</span><span·class="w"> | 219 | ······</span><span·class="s">"<body>"</span><span·class="p">,</span><span·class="w"> |
| 220 | ······</span><span·class="nf">xslapply</span><span·class="p"·data-group-id=" | 220 | ······</span><span·class="nf">xslapply</span><span·class="p"·data-group-id="0974255801-13">(</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">template</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">E</span><span·[·...·truncated·by·diffoscope;·len:·35,·SHA:·5106c9da909d33a9d63989048414e3f01efa2a4f3b1369942f834d99eb235996·...·]-13">)</span><span·class="p">,</span><span·class="w"> |
| 221 | ······</span><span·class="s">"</body>"</span><span·class="w"> | 221 | ······</span><span·class="s">"</body>"</span><span·class="w"> |
| 222 | ······</span><span·class="s">"</html>"</span><span·class="w">·</span><span·class="p"·data-group-id=" | 222 | ······</span><span·class="s">"</html>"</span><span·class="w">·</span><span·class="p"·data-group-id="0974255801-9">]</span><span·class="p">;</span><span·class="w"> |
| 223 | </span><span·class="nf">template</span><span·class="p"·data-group-id=" | 223 | </span><span·class="nf">template</span><span·class="p"·data-group-id="0974255801-14">(</span><span·class="n">E</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">xmlElement</span><span·class="p"·data-group-id="0974255801-15">{</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·637,·SHA:·7137b57c11e0f80308a8adb235e764221f22d6c817f6d95778a3b4846572c3d7·...·]-14">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 224 | ····</span><span·class="p"·data-group-id=" | 224 | ····</span><span·class="p"·data-group-id="0974255801-18">[</span><span·class="s">"<h1>"</span><span·class="p">,</span><span·class="w"> |
| 225 | ·····</span><span·class="nf">xslapply</span><span·class="p"·data-group-id=" | 225 | ·····</span><span·class="nf">xslapply</span><span·class="p"·data-group-id="0974255801-19">(</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">template</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">E</span><span·[·...·truncated·by·diffoscope;·len:·35,·SHA:·5106c9da909d33a9d63989048414e3f01efa2a4f3b1369942f834d99eb235996·...·]-19">)</span><span·class="p">,</span><span·class="w"> |
| 226 | ·····</span><span·class="s">"</h1>"</span><span·class="p"·data-group-id=" | 226 | ·····</span><span·class="s">"</h1>"</span><span·class="p"·data-group-id="0974255801-18">]</span><span·class="p">;</span><span·class="w"> |
| 227 | </span><span·class="nf">template</span><span·class="p"·data-group-id=" | 227 | </span><span·class="nf">template</span><span·class="p"·data-group-id="0974255801-20">(</span><span·class="n">E</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">xmlElement</span><span·class="p"·data-group-id="0974255801-21">{</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·641,·SHA:·d9d471468cc1fc4b404ccabfffd6bae41540a2cba0fb55d071102f203d53a287·...·]-20">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 228 | ····</span><span·class="p"·data-group-id=" | 228 | ····</span><span·class="p"·data-group-id="0974255801-24">[</span><span·class="s">"<h2>"</span><span·class="p">,</span><span·class="w"> |
| 229 | ·····</span><span·class="nf">xslapply</span><span·class="p"·data-group-id=" | 229 | ·····</span><span·class="nf">xslapply</span><span·class="p"·data-group-id="0974255801-25">(</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">template</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">E</span><span·[·...·truncated·by·diffoscope;·len:·35,·SHA:·5106c9da909d33a9d63989048414e3f01efa2a4f3b1369942f834d99eb235996·...·]-25">)</span><span·class="p">,</span><span·class="w"> |
| 230 | ·····</span><span·class="s">"</h2>"</span><span·class="p"·data-group-id=" | 230 | ·····</span><span·class="s">"</h2>"</span><span·class="p"·data-group-id="0974255801-24">]</span><span·class="p">;</span><span·class="w"> |
| 231 | </span><span·class="nf">template</span><span·class="p"·data-group-id=" | 231 | </span><span·class="nf">template</span><span·class="p"·data-group-id="0974255801-26">(</span><span·class="n">E</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">xmlElement</span><span·class="p"·data-group-id="0974255801-27">{</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·641,·SHA:·bb87316aa3c995b02781f05b2d6fa0d20887986f703841650418a58940aed001·...·]-26">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 232 | ····</span><span·class="p"·data-group-id=" | 232 | ····</span><span·class="p"·data-group-id="0974255801-30">[</span><span·class="s">"<h3>"</span><span·class="p">,</span><span·class="w"> |
| 233 | ·····</span><span·class="nf">xslapply</span><span·class="p"·data-group-id=" | 233 | ·····</span><span·class="nf">xslapply</span><span·class="p"·data-group-id="0974255801-31">(</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">template</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">E</span><span·[·...·truncated·by·diffoscope;·len:·35,·SHA:·5106c9da909d33a9d63989048414e3f01efa2a4f3b1369942f834d99eb235996·...·]-31">)</span><span·class="p">,</span><span·class="w"> |
| 234 | ·····</span><span·class="s">"</h3>"</span><span·class="p"·data-group-id=" | 234 | ·····</span><span·class="s">"</h3>"</span><span·class="p"·data-group-id="0974255801-30">]</span><span·class="p">;</span><span·class="w"> |
| 235 | </span><span·class="nf">template</span><span·class="p"·data-group-id=" | 235 | </span><span·class="nf">template</span><span·class="p"·data-group-id="0974255801-32">(</span><span·class="n">E</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">xmlElement</span><span·class="p"·data-group-id="0974255801-33">{</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·184,·SHA:·3bdf7d61f17a39cc08ad94bff5e4c19df221dfd447d16705f028c19d27c6b704·...·]-32">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 236 | ····</span><span·class="p"·data-group-id=" | 236 | ····</span><span·class="p"·data-group-id="0974255801-34">[</span><span·class="s">"<p>"</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">xslapply</span><span·class="p"·data-group-id="0974255801-35">(</span><span·class="w">·</span><span·class="k">fun</span><span[·...·truncated·by·diffoscope;·len:·360,·SHA:·0f3acd4444c936e2f29cc91f4a9c42f77bd68b0c348547c742908a174b1aa871·...·]-34">]</span><span·class="p">;</span><span·class="w"> |
| 237 | </span><span·class="nf">template</span><span·class="p"·data-group-id=" | 237 | </span><span·class="nf">template</span><span·class="p"·data-group-id="0974255801-36">(</span><span·class="n">E</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">xmlElement</span><span·class="p"·data-group-id="0974255801-37">{</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·184,·SHA:·db1362ba448b5fe55c39817b604e3a5078035a26fcb71cd6145872c22769e357·...·]-36">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 238 | ····</span><span·class="p"·data-group-id=" | 238 | ····</span><span·class="p"·data-group-id="0974255801-38">[</span><span·class="s">"<p·class=\"note\">"</span><span·class="w"> |
| 239 | ·····</span><span·class="s">"<b>NOTE:·</b>"</span><span·class="p">,</span><span·class="w"> | 239 | ·····</span><span·class="s">"<b>NOTE:·</b>"</span><span·class="p">,</span><span·class="w"> |
| 240 | ·····</span><span·class="nf">xslapply</span><span·class="p"·data-group-id=" | 240 | ·····</span><span·class="nf">xslapply</span><span·class="p"·data-group-id="0974255801-39">(</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">template</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">E</span><span·[·...·truncated·by·diffoscope;·len:·35,·SHA:·5106c9da909d33a9d63989048414e3f01efa2a4f3b1369942f834d99eb235996·...·]-39">)</span><span·class="p">,</span><span·class="w"> |
| 241 | ·····</span><span·class="s">"</p>"</span><span·class="p"·data-group-id=" | 241 | ·····</span><span·class="s">"</p>"</span><span·class="p"·data-group-id="0974255801-38">]</span><span·class="p">;</span><span·class="w"> |
| 242 | </span><span·class="nf">template</span><span·class="p"·data-group-id=" | 242 | </span><span·class="nf">template</span><span·class="p"·data-group-id="0974255801-40">(</span><span·class="n">E</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">xmlElement</span><span·class="p"·data-group-id="0974255801-41">{</span><span·class="w">·</span><[·...·truncated·by·diffoscope;·len:·184,·SHA:·070f8945feeb73dd713f92795e13f0e45543bf83da78634b772785983d3c5435·...·]-40">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 243 | ····</span><span·class="p"·data-group-id=" | 243 | ····</span><span·class="p"·data-group-id="0974255801-42">[</span><span·class="s">"<em>"</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">xslapply</span><span·class="p"·data-group-id="0974255801-43">(</span><span·class="w">·</span><span·class="k">fun</span><spa[·...·truncated·by·diffoscope;·len:·362,·SHA:·9d88793516e73fffe21845f8772a6b3764a5dc3a411d28ac73ad2b9eae5660d1·...·]-42">]</span><span·class="p">;</span><span·class="w"> |
| 244 | </span><span·class="nf">template</span><span·class="p"·data-group-id=" | 244 | </span><span·class="nf">template</span><span·class="p"·data-group-id="0974255801-44">(</span><span·class="n">E</span><span·class="p"·data-group-id="0974255801-44">)</span><span·class="p">-></span><span·class="w"> |
| 245 | ····</span><span·class="nf">built_in_rules</span><span·class="p"·data-group-id=" | 245 | ····</span><span·class="nf">built_in_rules</span><span·class="p"·data-group-id="0974255801-45">(</span><span·class="w">·</span><span·class="k">fun</span><span·class="w">·</span><span·class="ss">template</span><span·class="p">/</span><span·class="mi">1</span><span·class="p">,</span><span·class="w">·</span><span·class="n">E</span><span·[·...·truncated·by·diffoscope;·len:·35,·SHA:·5106c9da909d33a9d63989048414e3f01efa2a4f3b1369942f834d99eb235996·...·]-45">)</span><span·class="p">.</span></code></pre><p>It·is·important·to·end·with·a·call·to·<a·href="xmerl_xs.html#built_in_rules/2"><code·class="inline">xmerl_xs:built_in_rules/2</code></a>·if·you·want·any |
| 246 | text·to·be·written·in·"push"·transforms.·That·are·the·ones·using·a·lot·<code·class="inline">xslapply(·fun·template/1,·E·)</code>·instead·of·<code·class="inline">value_of(select("xpath",E))</code>,·which·is·pull...</p><hr·class="thin"/><p>The·largest·example·is·the·stylesheet·to·transform·this·document·from·the | 246 | text·to·be·written·in·"push"·transforms.·That·are·the·ones·using·a·lot·<code·class="inline">xslapply(·fun·template/1,·E·)</code>·instead·of·<code·class="inline">value_of(select("xpath",E))</code>,·which·is·pull...</p><hr·class="thin"/><p>The·largest·example·is·the·stylesheet·to·transform·this·document·from·the |
| 247 | Simplified·Docbook·XML·format·to·xhtml.·The·source·file·is·sdocbook2xhtml.erl.</p><h3·id="tips-and-tricks"·class="section-heading"> | 247 | Simplified·Docbook·XML·format·to·xhtml.·The·source·file·is·sdocbook2xhtml.erl.</p><h3·id="tips-and-tricks"·class="section-heading"> |
| 248 | ··<a·href="#tips-and-tricks"·class="hover-link"> | 248 | ··<a·href="#tips-and-tricks"·class="hover-link"> |
| 249 | ····<i·class="ri-link-m"·aria-hidden="true"></i> | 249 | ····<i·class="ri-link-m"·aria-hidden="true"></i> |
| 250 | ··</a> | 250 | ··</a> |
| 251 | ··<span·class="text">Tips·and·tricks</span> | 251 | ··<span·class="text">Tips·and·tricks</span> |
| 252 | </h3> | 252 | </h3> |
| Offset 270, 29 lines modified | Offset 270, 29 lines modified | ||
| 270 | position·in·Erlang.</p><hr·class="thin"/><h4>Example·5·Counting·positions</h4><pre><code·class="makeup·erlang"·translate="no"><span·class="o"><</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="ss">template</span><span·class="w">·</span><span·class="ss">match</span><span·class="o">=</span><span·class="s">"stanza"</span><span·class="o">></span><span·class="w"> | 270 | position·in·Erlang.</p><hr·class="thin"/><h4>Example·5·Counting·positions</h4><pre><code·class="makeup·erlang"·translate="no"><span·class="o"><</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="ss">template</span><span·class="w">·</span><span·class="ss">match</span><span·class="o">=</span><span·class="s">"stanza"</span><span·class="o">></span><span·class="w"> |
| 271 | ··</span><span·class="o"><</span><span·class="ss">p</span><span·class="o">></span><span·class="o"><</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="nb">apply</span><span·class="o">-</span><span·class="ss">templates</span><span·class="w">·</span><span·class="ss">select</span><span·class="o">=</span><span·class="s">"line"</span><span·class="w">·</span><span·class="o">/</span><span·class="o">></span><span·class="o"><</span><span·class="o">/</span><span·class="ss">p</span><span·class="o">></span><span·class="w"> | 271 | ··</span><span·class="o"><</span><span·class="ss">p</span><span·class="o">></span><span·class="o"><</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="nb">apply</span><span·class="o">-</span><span·class="ss">templates</span><span·class="w">·</span><span·class="ss">select</span><span·class="o">=</span><span·class="s">"line"</span><span·class="w">·</span><span·class="o">/</span><span·class="o">></span><span·class="o"><</span><span·class="o">/</span><span·class="ss">p</span><span·class="o">></span><span·class="w"> |
| 272 | </span><span·class="o"><</span><span·class="o">/</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="ss">template</span><span·class="o">></span><span·class="w"> | 272 | </span><span·class="o"><</span><span·class="o">/</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="ss">template</span><span·class="o">></span><span·class="w"> |
| 273 | </span><span·class="o"><</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="ss">template</span><span·class="w">·</span><span·class="ss">match</span><span·class="o">=</span><span·class="s">"line"</span><span·class="o">></span><span·class="w"> | 273 | </span><span·class="o"><</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="ss">template</span><span·class="w">·</span><span·class="ss">match</span><span·class="o">=</span><span·class="s">"line"</span><span·class="o">></span><span·class="w"> |
| 274 | ··</span><span·class="o"><</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="k">if</span><span·class="w">·</span><span·class="ss">test</span><span·class="o">=</span><span·class="s">"position()·mod·2·=·0"</span><span·class="o">></span><span·class="err">&</span><span·class="p">#</span><span·class="mi">160</span><span·class="p">;</span><span·class="err">&</span><span·class="p">#</span><span·class="mi">160</span><span·class="p">;</span><span·class="o"><</span><span·class="o">/</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="k">if</span><span·class="o">></span><span·class="w"> | 274 | ··</span><span·class="o"><</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="k">if</span><span·class="w">·</span><span·class="ss">test</span><span·class="o">=</span><span·class="s">"position()·mod·2·=·0"</span><span·class="o">></span><span·class="err">&</span><span·class="p">#</span><span·class="mi">160</span><span·class="p">;</span><span·class="err">&</span><span·class="p">#</span><span·class="mi">160</span><span·class="p">;</span><span·class="o"><</span><span·class="o">/</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="k">if</span><span·class="o">></span><span·class="w"> |
| 275 | ··</span><span·class="o"><</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="ss">value</span><span·class="o">-</span><span·class="k">of</span><span·class="w">·</span><span·class="ss">select</span><span·class="o">=</span><span·class="s">"."</span><span·class="w">·</span><span·class="o">/</span><span·class="o">></span><span·class="o"><</span><span·class="ss">br</span><span·class="w">·</span><span·class="o">/</span><span·class="o">></span><span·class="w"> | 275 | ··</span><span·class="o"><</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="ss">value</span><span·class="o">-</span><span·class="k">of</span><span·class="w">·</span><span·class="ss">select</span><span·class="o">=</span><span·class="s">"."</span><span·class="w">·</span><span·class="o">/</span><span·class="o">></span><span·class="o"><</span><span·class="ss">br</span><span·class="w">·</span><span·class="o">/</span><span·class="o">></span><span·class="w"> |
| 276 | </span><span·class="o"><</span><span·class="o">/</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="ss">template</span><span·class="o">></span></code></pre><p>Can·be·written·as</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">template</span><span·class="p"·data-group-id="3 | 276 | </span><span·class="o"><</span><span·class="o">/</span><span·class="nc">xsl</span><span·class="p">:</span><span·class="ss">template</span><span·class="o">></span></code></pre><p>Can·be·written·as</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">template</span><span·class="p"·data-group-id="3481377012-1">(</span><span·class="n">E</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">xmlElement</span><span·class="p"·data-group-id="3481377012-2">{</span><span·class="ss">name</span>[·...·truncated·by·diffoscope;·len:·158,·SHA:·e100fe2fd925fb370f3d40d0d921279be98e352de61fd15652f4840f5580eb68·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 277 | ····</span><span·class="p"·data-group-id="3 | 277 | ····</span><span·class="p"·data-group-id="3481377012-3">{</span><span·class="n">Lines</span><span·class="p">,</span><span·class="n">LineNo</span><span·class="p"·data-group-id="3481377012-3">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">lists</span>[·...·truncated·by·diffoscope;·len:·653,·SHA:·cd6e9d99e973507012288eefa4d762b46ec628a9babe2e6238a2d5c040097e8d·...·]-4">)</span><span·class="p">,</span><span·class="w"> |
| 278 | ····</span><span·class="p"·data-group-id="3 | 278 | ····</span><span·class="p"·data-group-id="3481377012-6">[</span><span·class="s">"<p>"</span><span·class="p">,</span><span·class="w">·</span><span·class="n">Lines</span><span·class="p">,</span><span·class="w">·</span><span·class="s">"</p>"</span><span·class="p"·data-g[·...·truncated·by·diffoscope;·len:·19,·SHA:·f5eaed2ade064672a9db1b39ac9e0bc1330a428d8ce80035d8e4084f445f69d1·...·]-6">]</span><span·class="p">.</span><span·class="w"> |
| 279 | </span><span·class="nf">template_pos</span><span·class="p"·data-group-id="3 | 279 | </span><span·class="nf">template_pos</span><span·class="p"·data-group-id="3481377012-7">(</span><span·class="n">E</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">xmlElement</span><span·class="p"·data-group-id="3481377012-8">{</span><span·class="ss">name</span>[·...·truncated·by·diffoscope;·len:·228,·SHA:·4e135f7255f9b78a16246cdf40a784daa10f3958b84ec924f5b59b34e82682b4·...·]-7">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 280 | ····</span><span·class="p"·data-group-id="3 | 280 | ····</span><span·class="p"·data-group-id="3481377012-9">{</span><span·class="p"·data-group-id="3481377012-10">[</span><span·class="nf">indent_line</span><span·class="p"·data-group-id="3481377012-11">(</span><span·class="n">P</span><span·class="w">·</span><span·class="ow">rem</span><span·class="w">·[·...·truncated·by·diffoscope;·len:·794,·SHA:·905f3b76693ab9b0e26326468e10062272b84ffbc93c2fd4da7a6bf6301fbc47·...·]-9">}</span><span·class="p">.</span><span·class="w"> |
| 281 | </span><span·class="nf">indent_line</span><span·class="p"·data-group-id="3 | 281 | </span><span·class="nf">indent_line</span><span·class="p"·data-group-id="3481377012-13">(</span><span·class="mi">0</span><span·class="p"·data-group-id="3481377012-13">)</span><span·class="p">-></span><span·class="s">"&#160;&#160;"</span><span·class="p">;</span><span·class="w"> |
| 282 | </span><span·class="nf">indent_line</span><span·class="p"·data-group-id="3 | 282 | </span><span·class="nf">indent_line</span><span·class="p"·data-group-id="3481377012-14">(</span><span·class="p">_</span><span·class="p"·data-group-id="3481377012-14">)</span><span·class="p">-></span><span·class="s">""</span><span·class="p">.</span></code></pre><hr·class="thin"/><h4>Global·tree·awareness</h4><p>In·XSLT·you·have·"root"·access·to·the·top·of·the·tree·with·XPath,·even·though |
| 283 | you·are·somewhere·deep·in·your·tree.</p><p>The·xslapply/2·function·only·carries·back·the·child·part·of·the·tree·to·the | 283 | you·are·somewhere·deep·in·your·tree.</p><p>The·xslapply/2·function·only·carries·back·the·child·part·of·the·tree·to·the |
| 284 | template·fun.·But·it·is·quite·easy·to·write·template·funs·that·handles·both·the | 284 | template·fun.·But·it·is·quite·easy·to·write·template·funs·that·handles·both·the |
| 285 | child·and·top·tree.</p><hr·class="thin"/><h4>Example·6·Passing·the·root·tree</h4><p>The·following·example·piece·will·prepend·the·article·title·to·any·section·title</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">template</span><span·class="p"·data-group-id=" | 285 | child·and·top·tree.</p><hr·class="thin"/><h4>Example·6·Passing·the·root·tree</h4><p>The·following·example·piece·will·prepend·the·article·title·to·any·section·title</p><pre><code·class="makeup·erlang"·translate="no"><span·class="nf">template</span><span·class="p"·data-group-id="8145415986-1">(</span><span·class="n">E</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="o">#</span><span·class="ss">xmlElement</span><span·class="p"·data-group-id="8145415986-2">{</span><span·class="ss">name</span[·...·truncated·by·diffoscope;·len:·257,·SHA:·69a744b956c74a50d160c673eda656c0873a02d1e76bd6fe8bc4768f24bef2f7·...·]-1">)</span><span·class="w">·</span><span·class="p">-></span><span·class="w"> |
| 286 | ····</span><span·class="p"·data-group-id=" | 286 | ····</span><span·class="p"·data-group-id="8145415986-3">[</span><span·class="s">"<h3>"</span><span·class="p">,</span><span·class="w">·</span><span·class="nf">value_of</span><span·class="p"·data-group-id="8145415986-4">(</span><span·class="nf">select</span><span·class="p"·data-group[·...·truncated·by·diffoscope;·len:·236,·SHA:·189692925567381edb0e060a3d6ded3bf7d4dc49cd4c08cb2f6bdc6923e73826·...·]-4">)</span><span·class="p">,</span><span·class="s">"·-·"</span><span·class="p">,</span><span·class="w"> |
| 287 | ·····</span><span·class="nf">xslapply</span><span·class="p"·data-group-id=" | 287 | ·····</span><span·class="nf">xslapply</span><span·class="p"·data-group-id="8145415986-6">(</span><span·class="w">·</span><span·class="nf">fun</span><span·class="p"·data-group-id="8145415986-7">(</span><span·class="n">A</span><span·class="p"·data-group-id="8145415986-7">)</span><span·class="w">·</span><span·class="p">-></span><[·...·truncated·by·diffoscope;·len:·423,·SHA:·b54f28d330f51f774212bd1c10bb97b419833e69dc98b66d1a7f80c35321adbd·...·]-6">)</span><span·class="p">,</span><span·class="w"> |
| 288 | ·····</span><span·class="s">"</h3>"</span><span·class="p"·data-group-id=" | 288 | ·····</span><span·class="s">"</h3>"</span><span·class="p"·data-group-id="8145415986-3">]</span><span·class="p">;</span></code></pre><hr·class="thin"/> |
| 289 | </div> | 289 | </div> |
| 290 | <div·class="bottom-actions"·id="bottom-actions"> | 290 | <div·class="bottom-actions"·id="bottom-actions"> |
| 291 | ··<div·class="bottom-actions-item"> | 291 | ··<div·class="bottom-actions-item"> |
| 292 | ······<a·href="xmerl_examples.html"·class="bottom-actions-button"·rel="prev"> | 292 | ······<a·href="xmerl_examples.html"·class="bottom-actions-button"·rel="prev"> |
| 293 | ········<span·class="subheader"> | 293 | ········<span·class="subheader"> |
| Offset 772, 17 lines modified | Offset 772, 17 lines modified | ||
| 772 | parsed·XML·<a·href="xmerl.html#t:xmlElement/0"><code·class="inline">Element :: #xmlElement{}</code></a> | 772 | parsed·XML·<a·href="xmerl.html#t:xmlElement/0"><code·class="inline">Element :: #xmlElement{}</code></a> |
| 773 | and·a·State,·<a·href="#t:global_state/0"><code·class="inline">global_state/0</code></a>,·which·holds·necessary·information | 773 | and·a·State,·<a·href="#t:global_state/0"><code·class="inline">global_state/0</code></a>,·which·holds·necessary·information |
| 774 | from·an·already·processed·schema.··Thus·validate·enables·reuse | 774 | from·an·already·processed·schema.··Thus·validate·enables·reuse |
| 775 | of·the·schema·information·and·therefore·if·one·shall·validate | 775 | of·the·schema·information·and·therefore·if·one·shall·validate |
| 776 | several·times·towards·the·same·schema·it·reduces·time·consumption.</p><p>The·result,·<code·class="inline">ValidElement</code>,·is·the·valid·element·that·conforms·to·the | 776 | several·times·towards·the·same·schema·it·reduces·time·consumption.</p><p>The·result,·<code·class="inline">ValidElement</code>,·is·the·valid·element·that·conforms·to·the |
| 777 | post-schema-validation·infoset.·When·the·validator·finds·an·error·it·tries·to | 777 | post-schema-validation·infoset.·When·the·validator·finds·an·error·it·tries·to |
| 778 | continue·and·reports·a·list·of·all·errors·found.·In·those·cases·an·unexpected | 778 | continue·and·reports·a·list·of·all·errors·found.·In·those·cases·an·unexpected |
| 779 | error·is·found·it·may·cause·a·single·error·reason.</p><p>Usage·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">1</span><span·class="o">></span><span·class="p"·data-group-id=" | 779 | error·is·found·it·may·cause·a·single·error·reason.</p><p>Usage·example:</p><pre><code·class="makeup·erlang"·translate="no"><span·class="mi">1</span><span·class="o">></span><span·class="p"·data-group-id="4118638048-1">{</span><span·class="n">E</span><span·class="p">,</span><span·class="p">_</span><span·class="p"·data-group-id="4118638048-1">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">xmerl_scan</span><sp[·...·truncated·by·diffoscope;·len:·197,·SHA:·c779e6fe76497e502c89d987ff0829a37459c03ccf7551b45ecb8f205b975d67·...·]-2">)</span><span·class="p">.</span><span·class="w"> |
| 780 | </span><span·class="mi">2</span><span·class="o">></span><span·class="p"·data-group-id=" | 780 | </span><span·class="mi">2</span><span·class="o">></span><span·class="p"·data-group-id="4118638048-3">{</span><span·class="ss">ok</span><span·class="p">,</span><span·class="n">S</span><span·class="p"·data-group-id="4118638048-3">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">xmerl_xsd</span><s[·...·truncated·by·diffoscope;·len:·206,·SHA:·2585ab0485c3c35eee1c254eb51a0437708b163f701288e0667ed955da5c1d57·...·]-4">)</span><span·class="p">.</span><span·class="w"> |
| 781 | </span><span·class="mi">3</span><span·class="o">></span><span·class="p"·data-group-id=" | 781 | </span><span·class="mi">3</span><span·class="o">></span><span·class="p"·data-group-id="4118638048-5">{</span><span·class="n">E2</span><span·class="p">,</span><span·class="p">_</span><span·class="p"·data-group-id="4118638048-5">}</span><span·class="w">·</span><span·class="o">=</span><span·class="w">·</span><span·class="nc">xmerl_xsd</span><sp[·...·truncated·by·diffoscope;·len:·219,·SHA:·608dca9f3e843849c1a8241477df239be76a7b1db032dd4f0c2163bb8315b99d·...·]-6">)</span><span·class="p">.</span></code></pre><p>Observe·that·E2·may·differ·from·E·if·for·instance·there·are·default·values |
| 782 | defined·in·<code·class="inline">my_XML_Schema.xsd</code>.</p> | 782 | defined·in·<code·class="inline">my_XML_Schema.xsd</code>.</p> |
| 783 | ··</section> | 783 | ··</section> |
| 784 | </section> | 784 | </section> |
| 785 | ····</div> | 785 | ····</div> |
| 786 | ··</section> | 786 | ··</section> |
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| 1 | -rw-r--r--···0········0········0········4·2025-03-11·08:30:48.000000·debian-binary | 1 | -rw-r--r--···0········0········0········4·2025-03-11·08:30:48.000000·debian-binary |
| 2 | -rw-r--r--···0········0········0······832·2025-03-11·08:30:48.000000·control.tar.xz | 2 | -rw-r--r--···0········0········0······832·2025-03-11·08:30:48.000000·control.tar.xz |
| 3 | -rw-r--r--···0········0········0···112 | 3 | -rw-r--r--···0········0········0···112496·2025-03-11·08:30:48.000000·data.tar.xz |
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| 1 | -rw-r--r--···0········0········0········4·2025-03-11·08:30:48.000000·debian-binary | 1 | -rw-r--r--···0········0········0········4·2025-03-11·08:30:48.000000·debian-binary |
| 2 | -rw-r--r--···0········0········0·····1932·2025-03-11·08:30:48.000000·control.tar.xz | 2 | -rw-r--r--···0········0········0·····1932·2025-03-11·08:30:48.000000·control.tar.xz |
| 3 | -rw-r--r--···0········0········0··10067 | 3 | -rw-r--r--···0········0········0··1006704·2025-03-11·08:30:48.000000·data.tar.xz |
| Offset 1111, 47 lines modified | Offset 1111, 47 lines modified | ||
| 00004560:·756c·6520·7768·6963·6820·7468·6520·6061··ule·which·the·`a | 00004560:·756c·6520·7768·6963·6820·7468·6520·6061··ule·which·the·`a | ||
| 00004570:·6464·5f68·6f73·745f·6b65·7960·2061·6e64··dd_host_key`·and | 00004570:·6464·5f68·6f73·745f·6b65·7960·2061·6e64··dd_host_key`·and | ||
| 00004580:·2060·6973·5f68·6f73·745f·6b65·7960·2063···`is_host_key`·c | 00004580:·2060·6973·5f68·6f73·745f·6b65·7960·2063···`is_host_key`·c | ||
| 00004590:·616c·6c62·6163·6b73·2061·7265·2064·656c··allbacks·are·del | 00004590:·616c·6c62·6163·6b73·2061·7265·2064·656c··allbacks·are·del | ||
| 000045a0:·6567·6174·6564·0a74·6f2e·2044·6566·6175··egated.to.·Defau | 000045a0:·6567·6174·6564·0a74·6f2e·2044·6566·6175··egated.to.·Defau | ||
| 000045b0:·6c74·7320·746f·2074·6865·2060·6d3a·7373··lts·to·the·`m:ss | 000045b0:·6c74·7320·746f·2074·6865·2060·6d3a·7373··lts·to·the·`m:ss | ||
| 000045c0:·685f·6669·6c65·6020·6d6f·6475·6c65·2e74··h_file`·module.t | 000045c0:·685f·6669·6c65·6020·6d6f·6475·6c65·2e74··h_file`·module.t | ||
| 000045d0:·0000·0003·7705·7469·746c·656d·0000·0007··....w.titlem.... | |||
| 000045 | 000045d0:·0000·0003·7708·6578·706f·7274·6564·7705··....w.exportedw. | ||
| 000045e0:·6661·6c73·6577·0574·6974·6c65·6d00·0000··falsew.titlem... | |||
| 000045f0:· | 000045f0:·074f·7074·696f·6e73·7705·7369·6e63·656b··.Optionsw.sincek | ||
| 00004600:·0008·4f54·5020·3233·2e30·6805·6803·7704··..OTP·23.0h.h.w. | 00004600:·0008·4f54·5020·3233·2e30·6805·6803·7704··..OTP·23.0h.h.w. | ||
| 00004610:·7479·7065·770e·7469·6d65·6f75·745f·6f70··typew.timeout_op | 00004610:·7479·7065·770e·7469·6d65·6f75·745f·6f70··typew.timeout_op | ||
| 00004620:·7469·6f6e·6100·6802·614d·6102·6c00·0000··tiona.h.aMa.l... | 00004620:·7469·6f6e·6100·6802·614d·6102·6c00·0000··tiona.h.aMa.l... | ||
| 00004630:·016d·0000·0010·7469·6d65·6f75·745f·6f70··.m....timeout_op | 00004630:·016d·0000·0010·7469·6d65·6f75·745f·6f70··.m....timeout_op | ||
| 00004640:·7469·6f6e·2829·6a74·0000·0001·6d00·0000··tion()jt....m... | 00004640:·7469·6f6e·2829·6a74·0000·0001·6d00·0000··tion()jt....m... | ||
| 00004650:·0265·6e6d·0000·0070·5365·7473·2074·6865··.enm...pSets·the | 00004650:·0265·6e6d·0000·0070·5365·7473·2074·6865··.enm...pSets·the | ||
| 00004660:·2074·696d·652d·6f75·7420·696e·206d·696c···time-out·in·mil | 00004660:·2074·696d·652d·6f75·7420·696e·206d·696c···time-out·in·mil | ||
| 00004670:·6c69·7365·636f·6e64·7320·7768·656e·2063··liseconds·when·c | 00004670:·6c69·7365·636f·6e64·7320·7768·656e·2063··liseconds·when·c | ||
| 00004680:·6f6d·6d75·6e69·6361·7469·6e67·2077·6974··ommunicating·wit | 00004680:·6f6d·6d75·6e69·6361·7469·6e67·2077·6974··ommunicating·wit | ||
| 00004690:·6820·7468·6520·6167·656e·7420·7669·6120··h·the·agent·via· | 00004690:·6820·7468·6520·6167·656e·7420·7669·6120··h·the·agent·via· | ||
| 000046a0:·7468·650a·736f·636b·6574·2e20·5468·6520··the.socket.·The· | 000046a0:·7468·650a·736f·636b·6574·2e20·5468·6520··the.socket.·The· | ||
| 000046b0:·6465·6661·756c·7420·7661·6c75·6520·6973··default·value·is | 000046b0:·6465·6661·756c·7420·7661·6c75·6520·6973··default·value·is | ||
| 000046c0:·2060·3130·3030·602e·7400·0000·0377·0 | 000046c0:·2060·3130·3030·602e·7400·0000·0377·0865···`1000`.t....w.e | ||
| 000046d0:·6974·6c65·6d00·0000·074f·7074·696f·6e73··itlem....Options | |||
| 000046 | 000046d0:·7870·6f72·7465·6477·0566·616c·7365·7705··xportedw.falsew. | ||
| 000046e0:·7469·746c·656d·0000·0007·4f70·7469·6f6e··titlem....Option | |||
| 000046f0:· | 000046f0:·7377·0573·696e·6365·6b00·084f·5450·2032··sw.sincek..OTP·2 | ||
| 00004700:·332e·3068·0568·0377·0474·7970·6577·1273··3.0h.h.w.typew.s | 00004700:·332e·3068·0568·0377·0474·7970·6577·1273··3.0h.h.w.typew.s | ||
| 00004710:·6f63·6b65·745f·7061·7468·5f6f·7074·696f··ocket_path_optio | 00004710:·6f63·6b65·745f·7061·7468·5f6f·7074·696f··ocket_path_optio | ||
| 00004720:·6e61·0068·0261·4761·026c·0000·0001·6d00··na.h.aGa.l....m. | 00004720:·6e61·0068·0261·4761·026c·0000·0001·6d00··na.h.aGa.l....m. | ||
| 00004730:·0000·1473·6f63·6b65·745f·7061·7468·5f6f··...socket_path_o | 00004730:·0000·1473·6f63·6b65·745f·7061·7468·5f6f··...socket_path_o | ||
| 00004740:·7074·696f·6e28·296a·7400·0000·016d·0000··ption()jt....m.. | 00004740:·7074·696f·6e28·296a·7400·0000·016d·0000··ption()jt....m.. | ||
| 00004750:·0002·656e·6d00·0000·5753·6574·7320·7468··..enm...WSets·th | 00004750:·0002·656e·6d00·0000·5753·6574·7320·7468··..enm...WSets·th | ||
| 00004760:·6520·5b73·6f63·6b65·7420·7061·7468·5d28··e·[socket·path]( | 00004760:·6520·5b73·6f63·6b65·7420·7061·7468·5d28··e·[socket·path]( | ||
| 00004770:·606d·3a73·7368·5f61·6765·6e74·2353·4f43··`m:ssh_agent#SOC | 00004770:·606d·3a73·7368·5f61·6765·6e74·2353·4f43··`m:ssh_agent#SOC | ||
| 00004780:·4b45·545f·5041·5448·6029·2066·6f72·2074··KET_PATH`)·for·t | 00004780:·4b45·545f·5041·5448·6029·2066·6f72·2074··KET_PATH`)·for·t | ||
| 00004790:·6865·2063·6f6d·6d75·6e69·6361·7469·6f6e··he·communication | 00004790:·6865·2063·6f6d·6d75·6e69·6361·7469·6f6e··he·communication | ||
| 000047a0:·2077·6974·6820·7468·650a·6167·656e·742e···with·the.agent. | 000047a0:·2077·6974·6820·7468·650a·6167·656e·742e···with·the.agent. | ||
| 000047b0:·7400·0000·0377·0574·6974·6c65·6d00·0000··t....w.titlem... | |||
| 000047c0:·074f·7074·696f·6e73·7708·6578·706f·7274··.Optionsw.export | |||
| 000047 | 000047b0:·7400·0000·0377·0865·7870·6f72·7465·6477··t....w.exportedw | ||
| 000047c0:·0566·616c·7365·7705·7469·746c·656d·0000··.falsew.titlem.. | |||
| 000047d0:·0007·4f70·7469·6f6e·7377·0573·696e·6365··..Optionsw.since | |||
| 000047e0:·6b00·084f·5450·2032·332e·3068·0568·0377··k..OTP·23.0h.h.w | 000047e0:·6b00·084f·5450·2032·332e·3068·0568·0377··k..OTP·23.0h.h.w | ||
| 000047f0:·0866·756e·6374·696f·6e77·0473·656e·6461··.functionw.senda | 000047f0:·0866·756e·6374·696f·6e77·0473·656e·6461··.functionw.senda | ||
| 00004800:·0268·0261·df61·026c·0000·0001·6d00·0000··.h.a.a.l....m... | 00004800:·0268·0261·df61·026c·0000·0001·6d00·0000··.h.a.a.l....m... | ||
| 00004810:·1373·656e·6428·5265·7175·6573·742c·204f··.send(Request,·O | 00004810:·1373·656e·6428·5265·7175·6573·742c·204f··.send(Request,·O | ||
| 00004820:·7074·7329·6a77·0668·6964·6465·6e74·0000··pts)jw.hiddent.. | 00004820:·7074·7329·6a77·0668·6964·6465·6e74·0000··pts)jw.hiddent.. | ||
| 00004830:·0001·7705·7369·6e63·656b·0008·4f54·5020··..w.sincek..OTP· | 00004830:·0001·7705·7369·6e63·656b·0008·4f54·5020··..w.sincek..OTP· | ||
| 00004840:·3233·2e30·6805·6803·7708·6675·6e63·7469··23.0h.h.w.functi | 00004840:·3233·2e30·6805·6803·7708·6675·6e63·7469··23.0h.h.w.functi |